Painting by Immersion and by Compressed Air: A Practical Handbook

CHAPTER XVI.

Chapter 325,975 wordsPublic domain

METAL SPRAYING.

Although the spraying of metal does not really come within the scope of this book, the process is so closely allied to paint spraying that it is considered advisable to devote a chapter to the subject, particularly as the perfected process is of very recent date, and bids fair to be used successfully in many industries. It should be stated at once that a metallic coating may be applied to practically any surface, and that almost any metal or alloy may be employed.

Stated briefly, the process consists in melting metal in the form of a rod or wire, by means of oxygen and coal gas, or other gas, depending upon the metal used. The molten metal is sprayed at a high pressure, and a surface may be quickly covered with the metal of any desired thickness. A remarkable fact concerning the process is that the metal is cooled to an extent that renders it possible to hold the hand in the jet so as to receive a coat of metal without inconvenience, and samples of wood and fabrics may be coated with metal without injury.

A moment of consideration will render it clear that there is an immense field for this process; for example, as aluminium can be sprayed, a lining of that metal might be given to brewers' and cooking utensils, etc., while tanks, barrels, reservoirs, intended to contain acids and oils, can also be treated. In the production of blocks for printing, in decorative work and mural decoration, there is an immense field, while ships' bottoms, instead of being painted with composition, can be copper-plated or sprayed with any other suitable metal, in order to prevent incrustation. No doubt some very beautiful effects can be produced by means of the process.

It will be convenient now to describe the machine used for the application of the metals. It consists of a pistol rather bulkier, but not unlike in form, the usual spraying apparatus, see Fig. 142.

In Fig. 143 is shown very clearly the construction of the sprayer, which it will be understood comprises a combined melting and spraying jet and a feed mechanism. The metal, in the form of rod or wire, is fed to the melting flame. This, as already stated, is formed by coal gas burned in the air, or oxygen, water gas, acetylene, hydrogen, etc., may be employed instead of the coal gas. The gases are supplied at such a pressure as to prevent blowing out and to ensure a highly deoxidizing flame. The spraying jet can be of carbon dioxide, nitrogen, air, steam, etc., and it must be fed at such a pressure as to produce a sufficiently high velocity for successful coating. The usual gauges and reducing valves will, of course, be employed. The feeding of the wire is accomplished by a small pneumatic motor, driven by the spraying medium, either in series or parallel with the main jet. The dimensions of the wire nozzle, and feed mechanism vary with the different metals. To obtain a good adhesion between the metals being sprayed and the surface to which it is to be applied, the latter must be thoroughly clean and of an open nature, to give a key for the deposit. Sandblasting is sometimes employed to effect this.

Fig. 145 shows an enlargement of the nozzle with the different parts marked. The cost of the process is not prohibitive; the cost of the metal only on one square foot of a thickness of 0·001 inch is quite small with the cheaper metals. The process is put on the market by the British Metal Spray Co., Ltd., Queen Anne's Chambers, Tothill Street, Westminster, London, S.W.

In a paper read by Mr. R. K. Morcom before the Institute of Metals, the following interesting information was given:--

With a given design of jet there is only a certain volume left by the air-jet which can be filled with flame, and this flame has a limiting temperature which cannot be exceeded. The wire, passing through this cone of flame receives heat, partly by radiation, but chiefly by conduction, and becomes melted; but there is a definite limit to the amount of heat which can be picked up by the wire passing through the flame, and a definite limit to the rate at which it can be melted. This cannot be increased by forcing more gas into the flame, as the extra gas is merely blown away by the air-jet. It is possible to increase the rate of melting by shaping the nozzles so as to leave room for a larger cone of flame, and experiments are in progress on this point. There is, therefore, a most definite economical quantity of gas which should be used in the pistol, this quantity being about 1·5 cubic foot of hydrogen per minute, and 0·5 cubic foot of oxygen; or about 0·8 cubic foot of coal-gas to 0·65 cubic foot of oxygen for the present standard designs.

In refractory metals these quantities may be increased slightly, as a slightly higher temperature can be obtained if the burning gases are under a pressure greater than atmospheric, and this occurs if the gas quantities are increased, the inner surface of the air-jet acting to some extent as an enclosing wall to the flame. On the other hand, for the more easily fusible and oxidizable metals, such as tin, lead, and zinc, it is advisable to keep the gas quantities rather below the figure given, so as to avoid any possibility of overheating and burning any portion of the wire.

The outer jet performs a threefold purpose: it keeps the nozzles and wire cool, it cools the object, and it produces the requisite velocity.

The velocity of the air leaving the jet will be independent of the volume discharged, and depends only upon the pressure at the jet, so long as there is no disturbance due to the entraining of air from the surrounding atmosphere. This, of course, will actually occur in practice, and the layer of air must have a certain thickness in order to prevent its being broken up, and its velocity destroyed by mixing with the surrounding atmosphere.

As at present constructed the standard pistol uses about 0·55 to 0·6 cubic foot per minute for every 1 lb. per square inch air pressure, so that with an air supply at 80 lb. per square inch, which is a very suitable figure for ordinary spraying, the air consumption will be from 45 to 50 cubic feet per minute.

The bulk of this will be from 830 to 920 grammes, and the mass of metal sprayed by this air will be from about 8 grammes in the case of iron to about 200 grammes in the case of lead.

The action of deposition is probably a complex one. The minute particles of solid metal are driven with such force against the object that, in some cases, they fuse, but owing to their small relative size, are promptly chilled by the object to which they adhere. If any of the particles are molten or gaseous they will adhere. In addition, the suddenly chilled particles are possibly, or even probably, in the state of unstable equilibrium found in "Prince Rupert's Drops," and act like so many minute bombs, bursting on impact into almost molecular dimensions, and penetrating the smallest cracks and fissures of the object.

The process requires some care in manipulation, as, by varying the conditions, it is possible to spray porous or non-porous coatings, and, with some metals, anything from a pure metal to a pure oxide. With care, however, non-porous, oxide-free, adherent coatings can be produced, of almost any metal on almost any solid.

In addition to metals, it is possible to spray fusible non-metals, or, by stranded wires, alloys of metals or mixture of metals with non-metals.

The process is so new that its uses are still partly to be developed. But it is easy to see that it may have far-reaching value for protective coatings against weather or fire, for ornament, for electrical resistance and conductors, for the production of special alloys, for joint making, and for many other purposes.

Quite in a different category comes that of very fine casting. The surface of a pattern, polished or slightly greasy, is most minutely copied, and it is possible to produce process blocks very rapidly. It may be useful to line moulds before pouring in a metal. The application of the process to the production of very fine or coarse metallic powders is being investigated.

The bulk of the work has hitherto been carried on in laboratories, but the apparatus is gradually becoming used in the more progressive factories, where extended facilities, and the knowledge of specialised requirements, will ensure a rapid improvement in technique and results.

The research on the lower melting point metals has been greater than on the others, and undoubtedly the economy with them both can be greatly improved. Preheating of gases and air, supplementary flames acting in front of the main jet, and electrical methods of heating, are all still the subject of experiment.

The following metals are among those which have been successfully sprayed by this process:--Aluminium, brass, bronze, copper, cupro-nickel, iron, gold, nickel, silver, tin, zinc, lead.

It will be obvious that this method is a most useful one to employ when it is desired to prevent iron from rusting on machine parts which cannot possibly be treated by chemical or other anti-rust processes, and be rendered immune from rusting by treatment where they stand. To give some idea of the cost, it may be said that if the thickness of 0.001 of one inch of zinc is deposited, the cost of metal for coating 10 square feet would only be a fraction over 4d.; while for lead the cost would be about 2d. The amount of gas used is not a large item, being at the rate per minute of 0.50 cubic foot of oxygen and 0.55 cubic foot of coal gas when spraying zinc, and 0.101 cubic foot less in each case where lead is being used in the pistol. These figures are given on the authority of the "Daily Telegraph."

INDEX

PAGE

Accessories 121-133

Advantages of Dipping 22

Advantages of Dipping Piano Cases 46

Aerograph 81

Aerograph Air Pump and Tank Combined 118

Aerograph Electric Motor Outfit 83

Aerograph Spraying Cabinet 127

Aerograph Turntable 134

Aeron 85-87

Agitating Apparatus 9-15

Agricultural Implements, Dipping 58

Air Drying Enamels 180

Air-drying coloured Japans 157

Air Heater 137

Air Pump and Tank Combined 118

Air Pump for Large Installation 119

Air Transformer Set 93

Airostyle 97

Airostyle Air Compressor 115

Airostyle Central Draught Fan 125

Airostyle Plant 121

Airostyle Plants for 16 Operators on Small Work 155

Airostyle Plant Showing Ventilator 199

Alabastine 29

Apparatus for Dipping Piano Cases 42

Application of Stoving Enamels 179

Artistic Application of Paint Spraying 201

Artists' Type of Invincible Sprayer 107

Asbestine 73

Auto Electric Air Heater 137, 139

Auto Filter 93

Automatic Control of Drying Room 68

Automatic Electric Controller 111

Automatic Finishing of Pianos 42

Automobiles, Latest Method of Finishing 216

Baird Machine Co. 249

Baking Enamel 63

Baking Heats, Safe for Pigment Colours 187

Baking or Stoving, Hints on 180

Barytes, Precipitated 70

Baskets, Fancy 147

Bean Spray Pump Co. 247

Bearings, Paint Proof 13

Bedsteads 33

Bedsteads, Dipping 58

Bedsteads, White Work 184

Berkel and Parnall's Slicing Machine Co., Ltd. 167

Bin for Spraying Light Articles 148

Birmingham Small Arms Co. 147-164

Black Japan Finishes 183

Blinds for Paint Dipping Tank 10

Block and Tackle 93

Blooming of Varnish 68

Blues 205

Bone Black 70

Bookbinding 146

Brown, E. C. & Co. 246

Brown Sprayer with Extension Rod, The 246

Browns 207

Bronzing 194

Brush Graining 208

Brushing versus Spraying 193

Burnt Sienna 70

Cabinets 127

Cadby, G. & Sons 164

Cans, Painting by Dipping 7

Carriage Department, Woolwich Arsenal 54

Carriages 146

Carriers for Dipping Piano Cases 42

Casements 7, 37

Casements Dipping 60, 61, 65

Casements, Steel 60

Celluloid Buttons 3

Celluloid Varnish, Recipe for 150

Central Draught Fan 125

Chicago White Lead and Oil Co. 188

China Clay 73

China Fruit Dish Decorated with the Airostyle 217

Cleaning Metal Parts 41

Coach Body Painting 55

Coal Box, Metal Decoration done by Airostyle 241

Coats of Paint, number 21

Collapsible Gates 33

Colour Glazing 202

Colour on Bedsteads 33

Colour Specimens, Spraying 153

Colour Varnishes, Transparent 184

Coloured Enamels 59

Compressed Air, Painting by 78

Compressed Air, Supply of 113

Compressor for Airostyle Plant 165

Concentric Form of Spray 79

Construction of Airostyle 98

Cost of Paint Dipping Plant 2

Cover for Tank 11

Crabs 18

Crane Eureka 103

Crane Record 104

Crittall Manufacturing Co. 60

Cycle Frames 197

Cycle Parts 146

Davis Gas Stove Co., Ltd. 161, 165

Decorative Work, an Example of Sprayed 261

Deed Boxes 38

Demar Varnish 75

Designs for Lamp Shades Done by Spraying 203

De Vilbiss Air Compressor 115

De Vilbiss Auto Cool Fan 125

De Vilbiss Fumexer or Spraying Cabinet 131

De Vilbiss Manufacturing Co. 85

Diogrammatic Representation of Melting and Spraying Jets in Action 259

Different Trades in Spraying, Requirements of 33, 141

Dipping and Spraying Compared 197

Dipping and Spraying Paints Compared 188

Dipping Casements 61, 65

Dipping Paints 7, 70, 72

Dipping Process, Advantages of 22

Dipping, Quantity of Paint Required for 77

Dipping Sewing Machine Parts 34

Dipping Tanks 57

Dipping Troughs 238

Dripping Platform 9

Driving Gear for Tank 14

Drying Room, Model 67

Durability of Dipping Paints 1

Dust, Excluding 64

Electric Controller 111

Electric Hoist for Heavy Goods 27

Electric Motor Outfit 83

Electrical Work 147

Elevation of Spraying Plant 199

Enamel, Stoving 63

Enamelling, Slate 152

Enamels 179

Enamels, Air Drying 180

Enamels for Steel Furniture 183

Enamels, Heat Resisting and Slow Drying 180

Enamels, Stoving 178

Eureka Spraying Machine 103

Evaporation of Turpentine 77

Evolution of Spraying Apparatus 78

Exhaust 113

Exhaust Installation 122

Fan, Central Draught 104, 124

Fancy Baskets 147

Files 38

Filler for Iron 26

Filler, Harland's 29

Finishing of Pianos 42, 43

Finishing Room 53

Flash Point of Turpentine 76

Fletcher, Russell & Co., Ltd. 167

Floco Process 223

Flowing-on System 25, 216

Ford Motor Co., Ltd. 54, 59, 216

Four Oaks Spraying Machine Co. 247

Freight Car, Painting 250

Frieze, a Sprayed 267

Furniture, Metal 38

Fumexer 86, 129, 135

Gas Fires 197

Gas Meter Co., Ltd. 172

Gas Meters, Masks for 142

Gas Meters, Spraying 148, 171

Gas Light and Coke Co. 171, 181, 185, 191

Gas Stoves and Ranges 149

Gasometer, Painting 83

Gates, Collapsible 33

Gear Box, Paint Proof 13

Gibbons, James 58

Gittings, Hills and Boothby, Ltd. 168

Glazing Colours 202, 205

Gloss Paint 71

Goodyear Stove, a Typical 237

Golden Ochre 70

Graining and Scumbling 208

Graining Grounds 212

Grays 207

Greens 207

Hanger, Iron 34, 38

Hanging Apparatus 16

Hard Wood, Primers for 74

Hard Wood, White Dip for 75

Harland, Wm. & Sons 29

Harrison, McGregor & Co. 58

Hart Patent Mask 143

Hayward Bros. & Eckstein, Ltd. 60

Heat of Drying Room 69

Heat Resisting and Slow Drying Enamels 180

Heavy Goods, Hoist for 27

Henley's Telegraph Works, Ltd. 147

Hickory Wheels 54

Hints on Stoving or Baking 180

Hoist for Heavy Goods 27

Hoists 18

Holden, Arthur & Co, Ltd. 167

Holes in Woodwork, Stopping 29

Hook for Suspending 17, 64

Hot Air Method 235

Illingworth on White Spirit 76

Imitating Marbles 210

Imitation Wood Effects 183

Immersing Mangle Frames 35

Immersion, Painting by 7, 11

Implement Manufacturers 14

Indian Red 70

Introduction 1

Invincible Sprayer 105

Iron, Filler for 26

Iron Hanger 38

Iron Rods 34

Iron Sashes 7

Iron Window Frames 37

Italian Raw Sienna 70

Joist and Wheels Supplying Hanger 16

Kerosene Oil 75

Kettle Type of Spray 78

Khaki Paint 57

Kingsbury Manufacturing Co, Ltd. 168

Lacquers for Spraying 80

Lacquers, Paints, etc, for Spraying 177

Lamp Shades, Designs done by Spraying 203

Lime and Whitewash Sprayers 241

Limewashing by Machine with 8ft. Bamboo Pole 245

Limewhite Sprayer, Merryweathers 247

Location of Work Cabinets 127

Lockers 38

Lowering Piano Cases into the Varnish Tank 47

Lucas, John & Co. 188

Lucas, Joseph, Ltd. 160, 169, 173, 175, 181

Machine for Metal Spraying 256

Making Stencils 144

Mander Brothers 154

Mangle Frames Immersing 35

Marble Grounds 210

Marshall Sons & Co, Ltd. 59

Mask Hart Patent 143

Masks and Stencils 141

Masks for Gas Meters 142

Masury, John W. & Son 189

McLennan System 9

Melting and Spraying Jets in Action 259

Merryweather Limewhite Sprayer 247

Metal Decoration 241

Metal Furniture 38

Metal Goods 38

Metal Motor Parts 41

Metal, Primers for 74

Metal Sheets, Dipping 58

Metal Sprayer, Details of 257

Metal Spraying 255

Metal Spraying Machine 256

Metal, White Dipping for 75

Midland Sprayer 108

Model Drying Room 67

Moller and Schumann Co. 180

Morris, Herbert, Limited 21

Morris Standard Electric Trolley Hoist 23

Motor Bodies, The Floco System of Painting 224

Motor Car Shops 231

Motor Outfit for Spraying 83

Motor Parts, Metal 41

Motor Wheels 54

Objections sometimes urged against Spraying 194

Ochre 70

Office Partitions 60

Oil and Water Separator 111

Oil in Dipping Paints 72

Oxford Ochre 70

Oven Baking Methods 232

Overhead Rails 57

Paasche Air Brush 109

Paasche Automatic Electric Controller 111

Paasche Motor Driven Fan 124

Paasche Turn-Table 135

Paint Dipping 7

Paint Dipping Plant, Cost of 2

Paint Dipping, Simple Form of 7

Paint Dipping Tank 10

Paint for Casements 37

Paint for Metal Work 41

Paint for Wagons 57

Paint, Number of Coats 21

Paint Proof Bearings 13

Paint Sprayer, Portable 250

Paint Spraying Apparatus Used by the Pennsylvania Railroad 252

Paint Spraying, Artistic Application of 201

Paint, Supply of 113, 122

Paint Tank 8

Painting a Freight Car 250

Painting by Compressed Air 78

Painting by Immersion 7, 11

Painting Gasometer 83

Painting Motor Bodies the Floco System of 224

Painting Motor Wheels 54

Paints Durability of 1

Paint for Dipping 70

Paints, Spreading Capacity of 77

Part End Elevation of Plant for 12 Operators 159

Pennsylvania Railroad Company 250

Perkins System of Heating 235

Phillips & Son 58

Philorite 30

Piano Cases, Lowering into the Varnish Tank 47

Pianos, Finishing of 39

Pickling Metal Parts 41

Picture Frames 149

Picture Mouldings 149

Piece Work 145

Pigment Colours, Safe Baking Heats for 187

Pinchin Johnson's Drying Room 68

Plants, Some Typical 54, 158

Platform, Dipping 9

Portable Paint Sprayer for Railing and other Work 250

Precipitated Barytes 70

Preparing Wood Before Painting 25

Pressure in Spraying 80

Primers and Surfacers 235

Primers for Metal 71

Primers for Soft Wood 74

Protecting Parts not to be Painted 24

Prussian Blue 70

Purifying Air 114

Quantity of Paint Required for Dipping 77

Raido process 232

Rails and Hanging Apparatus 16

Rails for Overhead 57

Railway Work, Portable Paint Sprayer for 250

Raw Sienna 70

Recipe for Celluloid Varnish 150

Record Pistol 97, 99

Reds 205

Reducing Varnish 87

Requirements of Special Trades 33, 141, 145

Rims and Wheels 41

Rods, Iron 34

Rubbing Down 30

Safe Baking Heats of Pigment Colours 187

Scrubbing Air 114

Scumbling and Colour Glazing 202

Scumbling and Graining 208

Second Coat Dipping Paints 74

Sectional Drawing of Metal Spraying Machine 258

Sewing Machine Parts, Dipping 34

Shaded Effects produced by Spraying 213

Shaded Work by the Aerograph 263

Shafting for Tank 14

Sheets Metal Dipping 38, 58

Shellac Spraying 87

Ships' Hulls Spraying 151

Spraying Plant, Elevation of 199

Spraying, Quantity of Paint Required 77

Spraying Requirement of Different Trades 121

Spraying Ships' Hulls 151

Spraying versus Brushing 193

Staircases 7

Standard Hydraulic Immersion System 42

Standard Varnish Co 42

Steel Casements 60

Steel Furniture Enamels 183

Steel Implements 197

Steel Office Partitions 60

Steel Plate Fan 125

Steel Sheets 1, 12

Steel Wheels 41

Steel Wool for Rubbing Down 30

Stencils and Masks 141

Stencils, Making 144

Stirrers and Blinds for Paint Dipping Tank 10

Stopping Holes in Woodwork 29

Stove, a Typical Goodyear 237

Stoving Blacks 179

Show Card Done by Spraying 69, 209, 225, 239

Shop Fronts 60

Side Elevation of Plant for 12 Operators 158

Skylights 60

Slate Enamelling 152

Sliding Doors 60

Soft Wood, White Dip for 75

Soft Woods, Primers for 74

Spray, Concentric Form of 79

Sprayed Decorative Work, An Example 261

Spraying and Dipping Compared 197

Spraying and Dipping Paints Compared 188

Spraying Apparatus for Painting Freight Cars 252

Spraying Apparatus, Types of 81

Spraying Cabinets 127

Spreading Capacity of Paints 77

Spraying Colour Specimens 153

Spraying Metal 255

Spraying, Objections Sometimes Urged Against 194

Spraying Plant, Cost of 2

Stoving Enamel 63, 178

Stoving or Baking, Hints on 180

Stoving Temperatures 187

Stoves, Notes on the Construction of 235

Sub Frame for Tank 14

Supply of Compressed Air 113

Supply of Paint 122

Suspending Hook 64

Table Cover Decorated with the Airostyle 219

Tank and Air Pump Combined 118

Tanks for Dipping 57

Tank for Dipping Metal Windows 63

Tank for Painting Steel Sheets 12

Tank Paint 8

Tank, Special Form of 9

Tank Used in Flowing on Paint 222

Tapered Cans 7

Temperatures for Stoving 187

Test for White Spirit 76

Three Tank Plant 15

Thornley and Knight, Ltd. 157

Time Saving 1

Toys 1

Trade, Requirements of Different 33

Tramcars 154

Transparent Colour Varnishes 184

Trolley Hoist 19

Troughs 41

Tumbling Barrel Process 248, 249

Turkey Umber 70

Turn-Tables 129, 130, 134

Turpentine, Flash Point of 76

Type G Aeron 68

Types of Spraying Apparatus 81

Typical Hoist 19

Typical Plants, Some 54, 158

Ultra Airostyle 101

Umber 70

Varnish, Quantity Required for Piano Cases 46

Varnishes for Spraying 80, 177

Varnishes, Transparent Colour 184

Venetian Red 70

Ventilation of Paint Shop 67

Ventilator for Plant 123

Volume of Air in Spraying 80

Wagons, Painting 54

Wagons, Store Room 61

Wells, A. C. & Co. 244

Wheels, Rims of 41

White Dipping for Meta 75

White Paint for Dipping 71

White Paste Primer 75

"White Paints and Painting Materials" 72

White Spirit 76

White Work Bedsteads, etc. 33, 184

Whitewash Sprayers 241

Whitewashing Machines 78

Whiting 73

Wilkinson, Heywood and Clark 11

Willys-Overland Automobile Factory 228

Winch 18

Window Frames, Iron 37

Wood Effects, Imitation 183

Woodwork Preparing before Painting 25

Woodwork, Stopping Holes in 29

Woolwich Arsenal, Carriage Department 54

Woolwich Arsenal Store Room 61

Work Cabinets 127

Yellows 206

Zinc Oxide 73

Zinc Stencils 145

_ADVERTISEMENTS._

STANDARD VARNISH WORKS.

Consulting Specialists respecting, and Manufacturers of every class of Varnish for all Industrial purposes INSULATING VARNISHES, CARRIAGE, AUTOMOBILE, MARINE & DECORATORS' VARNISHES, etc.

Patentees of the new STANDARD HYDRAULIC IMMERSION SYSTEM described on pages 42-53 of this publication.

Correspondence invited from responsible houses:

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THE AIROSTYLE

THE ONE COMPLETE & EFFICIENT SYSTEM OF COMPRESSED AIR PAINTING, JAPANNING, VARNISHING, Etc.

Manufactured throughout by

The AIROSTYLE & LITHOS, Ltd.,

35, St. Bride Street, Ludgate Circus,

TELE PHONE: 12025 CENTRAL. GRAMS: STAINLESS, LONDON. London, E.C.

THE

AIROSTYLE

COMPRESSED AIR

PAINTING PLANTS

ARE IN DAILY USE

at the Leading Works for

Motor Cars, Side Cars, etc. Gas Meters Gas Fires, Radiators, etc. Kitchen Ranges, Grates, etc. Cycles and Motor Cycles Cycle and Motor Accessories Carriage Lamps Leather Manufactures Buttons Toys Baby Carriages Sewing Machines China and Glass Electrical Apparatus Scientific Instruments Constructional Work Horticultural Buildings, etc. Tinplate Work Munitions General Japanned Goods Porcelain Enamelled Goods Advertising Signs Textile Productions Rubber Goods Typewriters Tiles

etc., etc., etc., etc.

Manufactured throughout by

The AIROSTYLE & LITHOS, Ltd.,

35, St. Bride Street, Ludgate Circus,

TELE PHONE: 12025 CENTRAL. London, E.C. GRAMS: STAINLESS, LONDON.

PECORA

FIRST COATERS, FINISHING COATS & THINNERS FOR USE BY THE IMMERSION (DIPPING) PROCESS OR APPLICATION BY COMPRESSED AIR (SPRAY) ARE THE RESULT OF

1st.--Theoretical Combinations of pigments and vehicles.

2nd.--Careful _practical_ test of these combinations and changes to meet given requirements.

3rd.--Close study of the finished article to determine durability.

4th.--Twenty-five years experience in the production of special finishes, which must meet unusually severe conditions.

Our Experimental Laboratory is equipped with a complete dipping, spraying and baking plant, and is at the service of any interested person.

We would be glad to finish samples of your product along any desired lines, or to follow out our own ideas as to the most desirable method.

PECORA PAINT COMPANY.

4th & Erie Ave. Philadelphia, Pa., U.S.A.

Est. 1862 by Smith Bowen. Incorporated 1911.

ARE YOU USING

"AEROGRAPH" SPRAYS

_FOR_

Plain Painting, Decorating, Japanning, Enamelling, Varnishing and Lacquering. Also for Distempers of all kinds. Five times Faster than any other Method.

Stationary and Portable Painting Outfits

_PERFECT CONTROL. SUPERIOR RESULTS._

THE AEROGRAPH CO., LTD.

43, HOLBORN VIADUCT, LONDON, E.C.

BRITISH AND FOREIGN GOVERNMENT CONTRACTORS.

_CRANE'S SPRAYERS_

For ENAMELS, PAINTS, LACQUERS, VARNISHES, ETC., ARE

--THE GREATEST ECONOMISERS OF TIME-- MATERIAL & LABOUR EXTANT--The Handiest and most Efficient yet Devised and further

They ENSURE the Best Results.

Write for details:

FREDK. CRANE CHEMICAL Co.,

Bordesley Green, B'HAM.

W. GOODYEAR & Sons,

SPECIALISTS IN:

_Enamelling Stoves_

_for_

WRITE FOR CATALOGUE.

If you will come to Homerton to see a practical demonstration of the finishing of your own products by the economical Spraying process, our facilities are at your service without charge or obligation. Those facilities are: a fully equipped spraying plant--probably the first spraying expert in the Kingdom--and a range of spray paints covering the entire process from Filler to Varnish coat, perfected by experience. We specialise too in paints for Dipping and shall be glad to demonstrate to you the economy of either or both.

Berger's Spray Paints & Dipping Paints.

Lewis Berger & Sons, Ltd.

Makers of Paints, Colours & Varnishes,

HOMERTON, LONDON, N.E.

Branches--Paris, Copenhagen, Sydney, Wellington, Bombay, New York.

PNEUMATIC SPRAYING

OF PAINTS, ENAMELS, LACQUERS, VARNISHES, RUBBER SOLUTION, &c.

If you use any of the above in quantities you cannot afford to be without a

PNEUMATIC SPRAYING PLANT.

BETTER FINISH, SMALLER BILLS for material, much cheaper production.

The Midland Pneumatic Spraying Plant is the product of practical Engineers and is ALL BRITISH.

LET US DEMONSTRATE ITS POSSIBILITIES AND ADVISE YOU.

Wire--Blast, Birmingham; 'Phone--Central 5463; or write--

The MIDLAND FAN Co., Ltd., 46, Aston Road, BIRMINGHAM.

SPECIALISTS FOR

SPRAYING, DIPPING & STOVING VARNISHES & PAINTS.

G. H. & B., Ltd., will be pleased to show their Spraying Installation to any firm desirous of seeing and testing same--customers' own material sprayed.

DIPPING TANKS loaned to customers to enable adequate tests to be made.

DO YOU WANT TO

SAVE MONEY ?

Then take up the most economical methods of painting, viz.,

DIPPING AND SPRAYING.

Gittings, Hills & Boothby, Ltd.,

Varnish and Paint Manufacturers,

LONG ACRE, BIRMINGHAM.

And at 82, TURNMILL STREET, LONDON. E. C.

_One Man with the Aeron is worth 2 to 10 without_

There is not only this 50 to 90% saving in time and labour, because of the speed that is possible with the AERON SYSTEM of spraying, but there is also produced a better quality of finish than is obtainable with any other method. The surface is absolutely uniform, smooth and even of thickness. It is free from all sags, runs, thin spots or fatty edges.

The AERON SYSTEM is simple and easy to operate. Ordinarily inaccessible places, and carved and irregular surfaces, are quickly and uniformly finished.

The AERON SYSTEM installed in your finishing room will produce the utmost in results at the lowest possible cost.

Address:

The DeVilbiss Manufacturing Co.

71 Newman St., Oxford St., London, W., Eng.: Toledo, Ohio, U.S.A.

Finish Your Products, Large or Small, Wood or Metal, with the

The AERON SYSTEM of applying varnishes, enamels, shellacs, lacquers, japans, bronzes, and practically every kind of finishing material, on wood and metal products with compressed air, is the result of extensive painting and mechanical experience, and a comprehensive study of finishing problems.

The AERON SYSTEM is complete in every detail. Every angle and problem of the application of finishing materials is successfully met with a thoroughness and positiveness--with a certainty of greater quality, speed, economy and efficiency--by this SYSTEM. There is a wide variety of "best type" Aerons and Accessory Equipment, meeting all requirements and enabling the operator to obtain striking results.

Let us send you full and interesting particulars, --and a booklet of equipment facts.--

Address:

The DeVilbiss Manufacturing Co.

71 Newman St., Oxford St., London, W., Eng.: Toledo, Ohio, U.S.A.

Telegrams--Varnish, Birmingham.

ARTHUR HOLDEN & SONS, Ld.

(Established nearly a Century)

Bradford Street, BIRMINGHAM.

Specialists in Spraying Finishes for every Trade.

Spraying Paints, Enamels, Japans, Varnishes, Varnish Paints, etc.,

FOR STOVING OR SELF-DRYING IN ALL COLOURS AND QUALITIES.

TRADES ALREADY SUPPLIED:--

Photographic, Optical, Electrical & Surgical Apparatus Manufacturers. Bicycles, Motor Bodies, Motor and Cycle accessories. Steel Toys, Wood Toys, Lamps, Iron Fittings. Mail Carts, Radiators, Trunks, Weighing Machines, Scales, etc., etc.

The DeVilbiss Aeron

The most Efficient and Flexible :: Spraying Machine. ::

Sold by

LLEWELLYN RYLAND, LTD.,

BIRMINGHAM.

Manufacturers of

LACQUERS, PAINTS, JAPANS AND VARNISHES,

Suitable for Spraying.

Wells' "Lightning" Lime & Colour Washer.

A Great SAVING of TIME, LABOUR AND MONEY.

NO OUTSIDE POWER REQUIRED. OVER 5,000 SOLD.

SAVES its Cost in a Few Days

LIME, WHITING, or COLD WATER PAINTS

applied at a speed of from 10 to 20 square yards per minute, in a manner superior to brushwork. One coat with the machine on rough surfaces is equal to two applied with brushes.

ENLARGED PATTERNS.

REDUCED PRICES.

No. 6a--Small Size, fed from pail, 5 gallons £5 5 0 " 4--8 gallons £8 5 0 " 4a On Wheels, same capacity £9 0 0 " 5a--On Wheels, 12 gallons £11 5 0

A. C. WELLS & CO., MIDLAND ROAD, ST. PANCRAS, LONDON.

Works--Carnarvon Street, MANCHESTER.

THE

PERKINS CLOSED SYSTEM

OF

HEATING BY HOT WATER

FOR

ENAMELLING, JAPANNING, DRYING, etc.

_Schemes & Estimates Submitted Free of Charge._

PERKINS, ENGINEERS, LTD.,

KINGSWAY HOUSE, KINGSWAY, W.C.

_Telephone No._ _Telegraphic Address--_ _482 Gerrard._ _"Arktos" Westcent, London._

"PAINT & COLOUR MIXING."

By ARTHUR SEYMOUR JENNINGS.

5th EDITION, REVISED & ENLARGED.

A Practical Handbook for Painters, Decorators, Artists, and all who have to mix colours.

Containing 300 samples of actual oil and water paints and water colours of various colours, including the principal graining grounds and upwards of 600 different colour mixtures, with instructions on colour and paint mixing generally, testing colours, &c., &c.

With fourteen coloured plates.

Contents.--Paints and Colour Mixing, Colours or Stainers, How to learn to mix and match colours, Reds and how to mix them, Blues and how to mix them, Yellows and how to mix them, Greens and how to mix them, Browns and how to mix them, Greys and Greys, White and Blacks, Black Japan in colour mixing, Glazing, Graining grounds and Graining colours, Mixing paints and colours on the manufacturing scale, Water paints, Distempers, Artists' water colours and how to mix them, testing colours, notes on harmony, The proportions of materials, Notes, &c.

POST FREE 5/4.

E. & F. N. SPON, Ltd., 57, Haymarket, S.W.

THE PAINTERS' POCKET BOOK.

By ARTHUR SEYMOUR JENNINGS.

Many thousands of copies of this exceedingly useful book have been sold.

3s. 3d. Post Free.

_SYNOPSIS OF CONTENTS._

Simple methods for Painters' materials.

Behaviour of different pigments.

How to measure Painters' work.

Painters' Prices for all kinds of Paint work, Sign Writing, Varnishing, Gilding, Enamelling, Marbling, Graining, Paperhanging, etc., etc.

Many Miniature Stencils which can be submitted to clients for their selection and afterwards be increased in size.

Ribbons for Church Decoration.

Defects in Painting and how to remedy them.

Colours and how to mix them.

Hints on Practical Geometry and setting out of work.

Symbols and Emblems in Church Decoration, on Flags, in Heraldry, etc.

Poisoning and remedies.

Concise Dictionary of terms used in Painting, Building, Architecture, Art, Applied Chemistry, etc., etc., with many illustrations.

Hints on Paperhanging.

Tables for Wallpapers, English, French, and American.

Table for ceiling papers.

Table of superficial yards.

Table of materials required according to the surface to be painted.

Roman Numerals.

Table for calculating the price of Linseed Oil and Turpentine.

Wages Table.

The Orders, Greek and Roman.

Table of Prices.

Table of discounts and percentages.

Colours and Pigments, permanent and otherwise.

Linseed Oil--percentage required for grinding dry Pigments.

How oils are sold.

How far paints will spread.

Mensuration.

English and American gallons.

Specific gravity.

Table of Thermometrical degrees.

Superficial contents of squares of glass.

Ready reckoner.

Notes of Insurance.

Table of Pigments, etc., etc.

THE TRADE PAPERS PUBLISHING CO., LTD., 365, Birkbeck Bank Chambers, HIGH HOLBORN, W.C.

PRACTICAL BOOKS FOR PAINTERS.

Post Free.

PAINT AND COLOUR MIXING. A Practical Handbook for Painters, Decorators, Artists, and all who have to mix colours. Containing 300 samples of actual oil and water colours. By Arthur Seymour Jennings 5/4

HOUSE PAINTING AND DECORATION. A popular guide, by Arthur Seymour Jennings 2/3

PRACTICAL CHURCH DECORATION. A guide to the Design and Execution of Decoration of Churches, Chapels and Ecclesiastical Structures. By Arthur Louis Duthie 3/3

SCUMBLING AND COLOUR GLAZING, illustrated with 48 examples of glazed work. By Andrew Millar 3/3

ZINC OXIDE AND ITS USES. By J. Cruickshank Smith 2/3

PRACTICAL GILDING, BRONZING, LACQUERING AND GLASS EMBOSSING. Illustrated by actual examples of Gilded and Lacquered Relief and other Decorations. By F. Scott-Mitchell 3/3

THE PAINTERS' AND BUILDERS' POCKET BOOK. By Arthur Seymour Jennings. Consists of 252 pages, containing a large amount of information of the greatest use to Painters and Builders 3/3

DECORATORS' SYMBOLS, EMBLEMS AND DEVICES. By G. C. Rothery 3/3

GRAINING AND MARBLING, THE PRACTICAL ARTS OF. By James Petrie. Each plate measures 17-1/2 × 11-1/2 and gives the different stages of the work. Published in 14 parts at 2/6 each, or bound volume 25/-

Office of "THE DECORATOR," 365, Birkbeck Bank Chambers, High Holborn, London, W.C.

PRACTICAL BOOKS FOR PAINTERS.

Post Free.

STENCILS AND STENCILLING. For all purposes, Artistic and Decorative. 154 pages of designs. By Arthur Louis Duthie 3/3

PAINT AND PAINTING DEFECTS, their Detection, Cause and Cure. By J. Cruickshank Smith 3/3

PAINTERS' BUSINESS BOOK. A manual of up-to-date methods of obtaining business, submitting Estimates, Book-keeping, Buying and Testing materials, etc., with many tables. By C. E. Oliver 3/3

CLARK'S BOOK OF ALPHABETS, two parts. For Signwriters, Designers, Decorators, and Draughtsmen, each 1/2

HEWETT'S DISTINCTIVE LETTERING AND DESIGNS 1/2

KAEMMERER'S LETTER BOOK. Containing several hundred alphabets in 140 plates, together with descriptive text 18/6

THE ART OF SHOW CARD WRITING. By C. J. Strong. Contains many beautiful Designs 10/-

STRONG'S BOOK OF DESIGNS. Invaluable to the Signpainter, Show Card Writer, etc. Containing, in addition to Posters, Show Cards, Ribbons, etc., 33 pages of ornamental work in Colour 20/-

ATKINSON'S SIGN PAINTING, replete with original Designs, Colour Combinations, etc. 12/7

GRAINING, ANCIENT AND MODERN. By Wm. E. Wall 12/4

Office of "THE DECORATOR," 365, Birkbeck Bank Chambers, High Holborn, London, W.C.

THE OFFICIAL ORGAN OF

The London Association of Foremen Engineers. The Leeds Association of Engineers. The Stoke-on-Trent Engineers' Association.

Sixpence a Copy.

_THE_

_"Managing Engineer."_

Five Shillings a Year.

PUBLISHED BY

THOMAS TOFTS, 93 & 94, Chancery Lane, London, W.C.

Transcribers Notes:

Punctuation and spelling inaccuracies were silently corrected.

Archaic and variable spelling has been preserved.

Variations in hyphenation and compound words have been preserved.

Fig 125. Design for Show Card is wrongly shown to be on page 223 in the list of illustrations. This has been corrected to page 233.

In the index 'Sheets Metal Dipping 40, 58', has been altered to 38, 58. Page 40 was a blank page and page 38 is near and in context but maybe an inaccurate alteration.

Both middle and modern decimal points are used.

Italics are shown thus: _sloping_.

Bold type is shown thus: =shout=.

Small capitals have been capitalised.

The caret character (^) has been used to denote superscript.