Abstract
In an improved system for the control of reserved Pullman accommodations, the car diagram has been replaced by a set of coupons, each representing a unit of space in the car. Breaking up the car diagram into its component parts represented by separate coupons eliminated a bottleneck impeding the operations of determining space availability and effecting its sale. Data on a space coupon are rapidly reproduced by facsimile and without handwriting onto a preprinted Pullman ticket form, either locally or over some distance, thereby greatly reducing the time required to effect the sale of space to a waiting customer. Ticketfax transmitters and recorders were specially designed by Western Union to meet the unique requirements of this phase of the improved system.
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More From: Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics
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