GB347231A - Improvements in or relating to punching machines for perforating statistical record-cards - Google Patents
Improvements in or relating to punching machines for perforating statistical record-cardsInfo
- Publication number
- GB347231A GB347231A GB2605/30A GB260530A GB347231A GB 347231 A GB347231 A GB 347231A GB 2605/30 A GB2605/30 A GB 2605/30A GB 260530 A GB260530 A GB 260530A GB 347231 A GB347231 A GB 347231A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- punches
- jan
- spools
- cards
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/246—Selection of punches
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
347,231. Feeding webs. BRITISH TABULATING MACHINE CO., Ltd., Victoria House, Vernon Place, Southampton Row, London.-(Assignees of Ford, E. A. ; Scarsdale, New York, U.S.A.) Jan. 24, 1930, No. 2605. Convention date, Jan. 25, 1929. [Class 100 (i).] A punched record strip 27 is duplicated on a series of separate cards 57 for more convenient statistical purposes by feeding the strip intermittently over a perforated plate so that the uncovered perforations allow compressed air to pass down the tube, to operate plungers coupled to punches which punch separate cards fed in synchronism by rollers 54 under the punches. The strip is fed and drawn through the machine on spools driven by gearing from the main motor driven shaft 21, slip clutches 26, 40 being located in the drive so that the actual feed may slip intermittently whenever the control cam 46 trips a pawl lever 48 into the feed gear of the spools to hold them stationary.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US334882A US1902064A (en) | 1929-01-25 | 1929-01-25 | Perforating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB347231A true GB347231A (en) | 1931-04-24 |
Family
ID=23309274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2605/30A Expired GB347231A (en) | 1929-01-25 | 1930-01-24 | Improvements in or relating to punching machines for perforating statistical record-cards |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1902064A (en) |
| GB (1) | GB347231A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3124042A (en) * | 1964-03-10 | Multiple sequence valve | ||
| US2911045A (en) * | 1955-03-10 | 1959-11-03 | Rca Corp | Automatic punching machine |
| US2855999A (en) * | 1956-04-10 | 1958-10-14 | Gen Precision Lab Inc | Punch press |
| US3143141A (en) * | 1961-10-30 | 1964-08-04 | Robertshaw Controls Co | Pneumatic control device |
| US3509323A (en) * | 1962-05-17 | 1970-04-28 | Houdaille Industries Inc | Tape control device |
| US3706873A (en) * | 1969-07-31 | 1972-12-19 | John H Nodine | Digital data entry device |
-
1929
- 1929-01-25 US US334882A patent/US1902064A/en not_active Expired - Lifetime
-
1930
- 1930-01-24 GB GB2605/30A patent/GB347231A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1902064A (en) | 1933-03-21 |
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