GB388053A - - Google Patents
Info
- Publication number
- GB388053A GB388053A GB388053DA GB388053A GB 388053 A GB388053 A GB 388053A GB 388053D A GB388053D A GB 388053DA GB 388053 A GB388053 A GB 388053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- keys
- sleeves
- detroit
- avenue
- michigan
- 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.)
- Active
Links
Landscapes
- Input From Keyboards Or The Like (AREA)
Abstract
388,053. Keyboards. BURROUGHS ADDING MACHINE CO., 2nd Avenue, Detroit, Michigan, U.S.A.-(Assignees of Doughty, A. J. ; c/o Burroughs Adding Machine Co. ; 2nd Avenue, Detroit, Michigan, U.S.A.) Aug. 17, 1931, No. 23144. Convention date, Aug. 18, 1930. [Class 106 (i).] To prevent liquid from entering a calculating- machine &c. through the keyboard the slots in the top plate through which the key stems pass are surrounded by sleeves telescoping into the heads of the keys. As shown in the Figure, a superposed plate 30 has perforations at each key position, the edges of the perforations being undercut to hold the flanges of short sleeves 32 extending upwardly into the slotted heads of the keys. Alternatively the sleeves may be integral with the plate 30. The stems of the keys are slotted to co-operate with the usual detents and are notched at their lower ends to take over a returning coil spring 25.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB388053A true GB388053A (en) |
Family
ID=1745380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB388053D Active GB388053A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB388053A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165996A (en) * | 1984-10-24 | 1986-04-23 | Expo Safety Syst | Operating means for electrical equipment within a sealed enclosure |
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0
- GB GB388053D patent/GB388053A/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2165996A (en) * | 1984-10-24 | 1986-04-23 | Expo Safety Syst | Operating means for electrical equipment within a sealed enclosure |
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