The Pneumatic Despatch Tube System of the Batcheller Pneumatic Tube Co. Also, Facts and General Information Relating to Pneumatic Despatch Tubes

=General Arrangement and Adaptability of the System.=—The experience gained in the construction and operation of the Philadelphia post-office tubes has naturally suggested impro...

=Organization.=—Early in the year 1892 several Philadelphia gentlemen organized a corporation and obtained a charter in the State of New Jersey to construct, lay, and operate pn...

We will now discuss, in an elementary way, the theory of pneumatic tubes, in order to understand more clearly their _modus operandi_ and the principles upon which they should be...

=Early Records.=—The earliest reference to pneumatic transmission of which we find any record is a paper presented to the Royal Society of London, by Denis Papin, in the year 16...

“Intimately connected with the working of the tubes is the removal of obstructions which occur from time to time, causing not unfrequently serious inconvenience and delay. The m...

I have been prompted to prepare this book by the frequent inquiries made regarding the details of our system of pneumatic tubes. These inquiries have come from people interested...