GB515759A - Improvements in or relating to machines for perforating records - Google Patents
Improvements in or relating to machines for perforating recordsInfo
- Publication number
- GB515759A GB515759A GB1740738A GB1740738A GB515759A GB 515759 A GB515759 A GB 515759A GB 1740738 A GB1740738 A GB 1740738A GB 1740738 A GB1740738 A GB 1740738A GB 515759 A GB515759 A GB 515759A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strips
- card
- contacts
- sparks
- closes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
- G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
- G06K1/128—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by electric registration, e.g. electrolytic, spark erosion
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Cartons (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
515,759. Perforating jacquard cards. BRITISH TABULATING MACHINE CO., Ltd. (International Business Machines Corporation). June 11, 1938, No. 17407. [Class 142 (i)] [Also in Group VIII] Statistical record or jacguard cards are perforated by sparks passed between pairs of electrodes located on opposite sides of the card. A card is fed by rolls between insulating plates 18, 19 having embedded therein conducting strips 20, 22 provided with discharge points or electrodes 23; the strips 20 are parallel with the card columns and the strips 22 are at right angles thereto. The strips 20 are connected through a connection box 26 as described in Specification 346,413, [Group XIX], bars 31, a spring brush 33 on a carriage 15, the secondary 35 of a spark coil 36 and contacts 38, 39 to the strips 22. Depression of a key 16 first closes contacts 46, 47 to complete a circuit through the primary 51 of the spark coil 36 and then closes the contacts 38, 39 to cause perforation of the card by sparks. British Specification 364,715 and U.S.A. Specification 1,305,557 also are referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1740738A GB515759A (en) | 1938-06-11 | 1938-06-11 | Improvements in or relating to machines for perforating records |
| DEI61641D DE719085C (en) | 1938-06-11 | 1938-06-16 | Machine for marking payment cards through point-like carbonization of the card material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1740738A GB515759A (en) | 1938-06-11 | 1938-06-11 | Improvements in or relating to machines for perforating records |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB515759A true GB515759A (en) | 1939-12-13 |
Family
ID=10094646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1740738A Expired GB515759A (en) | 1938-06-11 | 1938-06-11 | Improvements in or relating to machines for perforating records |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB515759A (en) |
-
1938
- 1938-06-11 GB GB1740738A patent/GB515759A/en not_active Expired
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