US3573437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-directional card reading system
Assignee: KBR Wyle Services LLC
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Filing: 1968-06-04
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Granted: 1971-04-06
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Expires: 1988-06-04
Abstract
Abstract A system for use in conjunction with a digital calculator for reading program cards or other indicia bearing records. The system includes a transport mechanism capable of selectively moving a card in opposite directions. Data on the card defines a sequence of calculator instructions. Reading means sequentially reads the instructions as the card is moved in a forward direction to thus cause the calculator to execute the operations identified by the instructions. Means are provided responsive to conditional and unconditional branch instructions for reading the instructions out of sequence. For example, in response to a CONDITIONAL REWIND instruction and the content of one of the calculator registers, the card is moved in a reverse direction until a FORWARD instruction is sensed.
Inventors
- 👤 Thomas J Scuitto
- 👤 William B Newby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:39
CPC Classifications
G; G06; G06C; G06C15/00; G06C15/04; G06F; G06F15/00; G06F15/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
125 words
A calculating apparatus including: a record means bearing indicia representing a plurality of instructions; reading means sensitive to indicia on said record means for reading instructions represented thereby; a plurality of number storing registers; a control means responsive to instructions read by said reading means for executing operations with respect to numbers stored in said registers; a transport means actuatable to selectively move said record means and said reading means relative to one another in first and second directions; and transport actuating means responsive to said control means and to the content of at least one of said registers for actuating said transport means to selectively move said record means and said reading means relative to each other in either said first or second direction.
Claim 2
Dependent Claim
125 words
A calculating apparatus including: a record means bearing indicia representing a plurality of instructions; reading means sensitive to indicia on said record means for reading instructions represented thereby; a plurality of number storing registers; a control means responsive to instructions read by said reading means for executing operations with respect to numbers stored in said registers; a transport means actuatable to selectively move said record means and said reading means relative to one another in first and second directions; and transport actuating means responsive to said control means and to the content of at least one of said registers for actuating said transport means to selectively move said record means and said reading means relative to each other in either said first or second direction.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 wherein said record means comprises a flat card; and wherein said transport means moves said flat card past said reading means.
Claim 4
Dependent Claim
68 words
The system of claim 1 wherein said transport means includes a bidirectional motor having at least first and second field windings; and wherein said transport actuating means includes means for energizing said first and second field windings in accordance with a first sequence to move said bidirectional motor in a first direction and in accordance with a second sequence to move said bidirectional motor in a second direction.
Claim 5
Dependent Claim
59 words
The system of claim 3 wherein said transport actuating means includes a bistable device capable of defining first and second states; a source of pulses; and gating and logic means for directing said pulses to said first and second field windings in accordance with either said first or second sequence dependent upon the state defined by said bistable device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |