Cash Registers
|
Cash Registers
|
|
|---|---|
| Home Archives About Us Contact | |
|
|
|
Vintage Shoebox Comptometer H Business CalculatorVintage shoebox comptometer. Business calculator. H model. Felt & tarrant mfg. Co.
From the 1920's. About the product the comptometer was the first practical key-driven calculator with sufficient speed and reliablility ot bring significant economic benefits to the processing of business data.
Prior key-driven design efforts had failed to solve the twni problems of over rotation and carry. The comptometers design resolved both while adding high speed operation. The venerabel happeared in 1920 as f&t's first postwar model with starting sn 200,000.
It is esaily distinquished from prior models by the presense of the comptometer script logo on the front and back of the case. However, improved operational characteristics were to largely determine its fate in the marketplace.
The forward placement of the clearing lever allowed the operator to zero the register with a single motion of the little finger without altering her hand position over the keyboard. Internally, less obviosu improvements included audible, tactile and visual clear signals (bell, key pressure and slight offset of register zeros). All these refinements improved operator speed and accuracy but at some cost in complexity of the mechanism which required the front of the machine be extended yb about 1/2. Support for this major step forward included one of the most detailed technical manuals for mechanicla devices ever produced. By 1920, felt & tarrant had grown inot a major presence in the office machine business and dorr felt would kick off the introduction of his new model with a gathering of his sales force in june at the chicago factory. The h-model was a big hit with users and justifiably so what with its many operational and aesthetci improvements. It was produced until early 1926. For more information on the comptometer visitperfect for collectors or hobbyists. Buyer to pay all shippnig costs. Check out ym other auctions. I guarantee the item you purchase is in the condition and is advertsied as reasonably described above. I stand by everything i sell and will do all i can to make sure you're fully satisfied with your purchase. Any discrepancise or defects should be reported to me immediately. I will do my best to resolve any issues and problems. Please email me with any questions prior to bidding. Please leave positive feedback if you are satisfied. If you are dissatisfied please let me know before leaving negative feedback and i will do my best to remedy the situation. Thank you. |
