GB191209543A - Improvements in Adding Machines. - Google Patents

Improvements in Adding Machines.

Info

Publication number
GB191209543A
GB191209543A GB191209543DA GB191209543A GB 191209543 A GB191209543 A GB 191209543A GB 191209543D A GB191209543D A GB 191209543DA GB 191209543 A GB191209543 A GB 191209543A
Authority
GB
United Kingdom
Prior art keywords
shaft
drum
series
frame
levers
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
Application number
Inventor
Szyja Boruch Rykner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191209543A publication Critical patent/GB191209543A/en
Expired legal-status Critical Current

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Abstract

9543. Rykner, S. B. April 22. Adding-apparatus; overthrow-preventing mechanism.-A series of numbers is arranged helically on a drum 1 which has a pinion 6 gearing with a rack 7 pivoted to a lever 8 on a shaft 9 having a series of arms 12 for engagement by the flat ends of a series of key-levers 14. These levers are pivoted at different distances from the shaft 9 so as to give a movement proportional to their value. To prevent overthrow, a second shaft 15 having arms 17 also engaging the keys has a catch lever 18 to engage a ratchet-wheel on the drum spindle. A window frame 22 for exhibiting the result is fitted in front of the drum and slides on a shaft 27 and has a stud 23 to engage a spiral cut in the drum. The frame 22 is set on any number to which digits are to be added and the required keys are struck, the units figure of the result is written down and the figures to be carried-on set in the frame, and so on.
GB191209543D 1912-04-22 1912-04-22 Improvements in Adding Machines. Expired GB191209543A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191209543T 1912-04-22

Publications (1)

Publication Number Publication Date
GB191209543A true GB191209543A (en) 1912-08-29

Family

ID=32368114

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191209543D Expired GB191209543A (en) 1912-04-22 1912-04-22 Improvements in Adding Machines.

Country Status (1)

Country Link
GB (1) GB191209543A (en)

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