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This came up on another board.
I don't know if people are old enough to remember. When I was a child the local coop had this system where money from individual sales was placed in a canister and placed on a zip wire and sent to a central cashier. Any change came back the same way.
This system was superseded by one which used a vacuum. Today that system is used in many superstores. Individual check-out operators have a vacuum tube in their checkout, they can send money to the cash office so they don't have too much in their cash register.
At the turn of the last century, Marshall Field's, a big store in Chicago, which later became Macys, had a vacuum system installed in every department, so no cash registers were in use. Money and change was going back and forth for each sale. It was a very big store, so the other end of these tubes in their cash office, looked like this.
I don't know if people are old enough to remember. When I was a child the local coop had this system where money from individual sales was placed in a canister and placed on a zip wire and sent to a central cashier. Any change came back the same way.
This system was superseded by one which used a vacuum. Today that system is used in many superstores. Individual check-out operators have a vacuum tube in their checkout, they can send money to the cash office so they don't have too much in their cash register.
At the turn of the last century, Marshall Field's, a big store in Chicago, which later became Macys, had a vacuum system installed in every department, so no cash registers were in use. Money and change was going back and forth for each sale. It was a very big store, so the other end of these tubes in their cash office, looked like this.
