GB818986A - Improvements in or relating to sheet feed detecting devices - Google Patents

Improvements in or relating to sheet feed detecting devices

Info

Publication number
GB818986A
GB818986A GB28914/55A GB2891455A GB818986A GB 818986 A GB818986 A GB 818986A GB 28914/55 A GB28914/55 A GB 28914/55A GB 2891455 A GB2891455 A GB 2891455A GB 818986 A GB818986 A GB 818986A
Authority
GB
United Kingdom
Prior art keywords
photo
sheets
cell
light
conveyer
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
GB28914/55A
Inventor
Daniel Broido
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.)
International Computers and Tabulators Ltd
Original Assignee
International Computers and Tabulators Ltd
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 International Computers and Tabulators Ltd filed Critical International Computers and Tabulators Ltd
Priority to GB28914/55A priority Critical patent/GB818986A/en
Priority to US601190A priority patent/US2946992A/en
Priority to FR1155369D priority patent/FR1155369A/en
Priority to DEB42038A priority patent/DE1171657B/en
Publication of GB818986A publication Critical patent/GB818986A/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
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
    • G06K13/06—Guiding cards; Checking correct operation of card-conveying mechanisms
    • G06K13/067—Checking presence, absence, correct position, or moving status of cards

Abstract

818,986. Photo-electric control of conveyers. INTERNATIONAL COMPUTERS & TABULATORS Ltd., [formerly BRITISH TABULATING MACHINE CO. Ltd.]. Oct. 11, 1955, No. 28914/55. Class 40 (3). The regular positioning of sheets 10 moving along a conveyer 9 is checked photo-electrically and alarm and/or control action initiated when incorrect positioning occurs. In one embodiment the upper surface of the conveyer 9 is highly polished and a mirror 7 is placed parallel to, and above, a length thereof. Light beams from sources 5a, 5b and 5c are reflected back and forth and strike the conveyer 9 at points spaced by the correct spacing of the sheets before reaching photo-cell 8 via mirrors 6a, 6b and 6c. Thus when the sheets 10 are correctly spaced there are regularly spaced intervals when the light beams are all reflected from the surface 9 and the light directed on the cell 8 is of maximum intensity. A cam synchronized with the conveyer drive is arranged to feed the potential developed by the current through the cell at such times to a comparison device similar to that described below and an erroroperated device. If one or more of the sheets are displaced the peak light intensity reaching the cell is diminished and the error device operated. In a modification, light sources 5d, 5e, 5f and 5g spaced apart a multiple of the sheet spacing direct beams of light downwards through apertures 17d, 17e, 17f, and 17g to photo-cells 18d, 18e, 18f and 18g. With correct spacing of the sheets and cam switch 23 closed in synchronism with the presentation of a clear light path from each source to its respective cell the potential applied to condenser 22 from the switch is almost the same as that continuously applied through resistor 20 from constantly illuminated balancing photo-cell 18x. There is thus no output over line 25 to actuate the error device. If, however, one or more of the sheets are displaced then, when the cam switch closes, at least one of the photo-cells will be obscured and a positive pulse will be fed out over line 25 to operate the the error device. Specification 751,931, [Group XIX], is referred to.
GB28914/55A 1955-10-11 1955-10-11 Improvements in or relating to sheet feed detecting devices Expired GB818986A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB28914/55A GB818986A (en) 1955-10-11 1955-10-11 Improvements in or relating to sheet feed detecting devices
US601190A US2946992A (en) 1955-10-11 1956-07-31 Sheet feed detecting devices
FR1155369D FR1155369A (en) 1955-10-11 1956-08-03 Device for detecting incorrect sheet feed
DEB42038A DE1171657B (en) 1955-10-11 1956-10-08 Device for determining the incorrect position of documents moving at intervals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28914/55A GB818986A (en) 1955-10-11 1955-10-11 Improvements in or relating to sheet feed detecting devices

Publications (1)

Publication Number Publication Date
GB818986A true GB818986A (en) 1959-08-26

Family

ID=10283229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28914/55A Expired GB818986A (en) 1955-10-11 1955-10-11 Improvements in or relating to sheet feed detecting devices

Country Status (4)

Country Link
US (1) US2946992A (en)
DE (1) DE1171657B (en)
FR (1) FR1155369A (en)
GB (1) GB818986A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154556A (en) * 1984-02-20 1985-09-11 De La Rue Syst Sheet feeding apparatus

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3026419A (en) * 1959-05-11 1962-03-20 Ibm Overlap detector
US3219992A (en) * 1959-07-20 1965-11-23 Continental Can Co Monitoring apparatus
US3071711A (en) * 1960-03-14 1963-01-01 Meredith Publishing Company Photoelectric article detector apparatus
US3927878A (en) * 1974-04-03 1975-12-23 Apeco Corp Collator
US4123158A (en) * 1975-05-09 1978-10-31 Reytblatt Zinovy V Photoelastic strain gauge
US5331173A (en) * 1992-12-24 1994-07-19 Pitney Bowes Inc. System and method for indicating the location of a benchmark
US5345089A (en) * 1992-12-24 1994-09-06 Pitney Bowes Inc. System and method for optical scanner sensitivity adjustment

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183606A (en) * 1939-12-19 High speed differentially function
DE586698C (en) * 1930-07-30 1933-10-25 Westinghouse Electric & Mfg Co Procedure for checking and sorting objects
DE705290C (en) * 1938-05-06 1941-04-23 Westinghouse Electric & Mfg Co Photoelectric control device for regulating the supply of cardboard or cardboard boxes
US2171362A (en) * 1938-05-06 1939-08-29 Westinghouse Electric & Mfg Co Photocell system to control spacing of traveling articles
US2289737A (en) * 1938-11-17 1942-07-14 Interchem Corp Registration indicator for web treating apparatus
DE894172C (en) * 1940-10-24 1953-10-22 Siemens Ag Mail sorting conveyor belt with post material being conveyed between channels
US2451816A (en) * 1946-08-31 1948-10-19 Gen Electric Web break detector
DE882012C (en) * 1946-12-31 1953-07-23 James Frederick Doust Method and device for sorting mail items
US2696608A (en) * 1950-08-08 1954-12-07 Hangartner Erwin Thread guard device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154556A (en) * 1984-02-20 1985-09-11 De La Rue Syst Sheet feeding apparatus

Also Published As

Publication number Publication date
US2946992A (en) 1960-07-26
DE1171657B (en) 1964-06-04
FR1155369A (en) 1958-04-25

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