GB328281A - Improvements in or relating to card perforating machines or the like - Google Patents

Improvements in or relating to card perforating machines or the like

Info

Publication number
GB328281A
GB328281A GB2089/29A GB208929A GB328281A GB 328281 A GB328281 A GB 328281A GB 2089/29 A GB2089/29 A GB 2089/29A GB 208929 A GB208929 A GB 208929A GB 328281 A GB328281 A GB 328281A
Authority
GB
United Kingdom
Prior art keywords
debit
credit
shutter
complementary
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
Application number
GB2089/29A
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.)
Accounting & Tabulating Corp
Original Assignee
Accounting & Tabulating Corp
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 Accounting & Tabulating Corp filed Critical Accounting & Tabulating Corp
Priority to GB2089/29A priority Critical patent/GB328281A/en
Priority to US419976A priority patent/US1871582A/en
Priority to DE1930544437D priority patent/DE544437C/en
Priority to FR688396D priority patent/FR688396A/en
Publication of GB328281A publication Critical patent/GB328281A/en
Expired legal-status Critical Current

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
    • G06K1/02—Methods or arrangements for marking the record carrier in digital fashion by punching
    • G06K1/06—Manually-controlled devices

Abstract

328,281. Accounting & Tabulating Corporation of Great Britain, Ltd., and Brougham, L. E. Jan. 21, 1929. Statistical machines. -In using perforated cards carrying complementary perforations it is necessary for credit working to eliminate the operation of the debit adding wheels to prevent a false debit appearing. To this end, a shutter 34 is swung each time the subtraction shaft 30 of tabulating machine is rocked to lift the nought stops 36 of the debit operatives and prevent the respective sectors from swinging forward. A shutter may be provided for eliminating the operation of the credit adding wheels when debit working. In a machine dealing with cards with credit and complementary debit and cards with debit and complementary credit perforations a shutter is provided for each of the appropriate nought stops.
GB2089/29A 1929-01-21 1929-01-21 Improvements in or relating to card perforating machines or the like Expired GB328281A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2089/29A GB328281A (en) 1929-01-21 1929-01-21 Improvements in or relating to card perforating machines or the like
US419976A US1871582A (en) 1929-01-21 1930-01-10 Card perforating machine or the like
DE1930544437D DE544437C (en) 1929-01-21 1930-01-17 Card punching machine for punching true values and complementary values
FR688396D FR688396A (en) 1929-01-21 1930-01-17 Improvements to card punching machines or similar machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2089/29A GB328281A (en) 1929-01-21 1929-01-21 Improvements in or relating to card perforating machines or the like

Publications (1)

Publication Number Publication Date
GB328281A true GB328281A (en) 1930-04-22

Family

ID=9733381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2089/29A Expired GB328281A (en) 1929-01-21 1929-01-21 Improvements in or relating to card perforating machines or the like

Country Status (4)

Country Link
US (1) US1871582A (en)
DE (1) DE544437C (en)
FR (1) FR688396A (en)
GB (1) GB328281A (en)

Also Published As

Publication number Publication date
US1871582A (en) 1932-08-16
DE544437C (en) 1932-02-18
FR688396A (en) 1930-08-22

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