US2203013A - Perforated record sensing device - Google Patents

Perforated record sensing device Download PDF

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Publication number
US2203013A
US2203013A US138764A US13876437A US2203013A US 2203013 A US2203013 A US 2203013A US 138764 A US138764 A US 138764A US 13876437 A US13876437 A US 13876437A US 2203013 A US2203013 A US 2203013A
Authority
US
United States
Prior art keywords
roller
card
contact
sensing device
speed
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 - Lifetime
Application number
US138764A
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English (en)
Inventor
Eugene A Ford
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 Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Priority to US138764A priority Critical patent/US2203013A/en
Priority to FR836654D priority patent/FR836654A/fr
Priority to GB12164/38A priority patent/GB513883A/en
Priority to DEI61139D priority patent/DE676536C/de
Application granted granted Critical
Publication of US2203013A publication Critical patent/US2203013A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06K13/08—Feeding or discharging cards

Definitions

  • the present invention relates to record controlled accounting machines and more particularly to the sensing devices of such machines which sense perforations in record cards to control the 5 operation of the machine.
  • the invention relates to electrical contact sensing devices in which a. stranded contact brush makes electrical contact with a roller through a perforation in a record card.
  • Feeding means is .0 usually provided to feed cards, one by one, to pass between the brush and roller. As the brush wipes over the imperforate portion of the card it gathers small particles of lint or card dust,
  • the roller is geared to move with the card so that different sections make contact with the variously located perforations and the positions at which spotting occurs are thus distributed around the circumference of the roller.
  • the principal object of the present invention is to provide an improved brush and contact roller construction in which the action of spotting or burning is greatly minimized.
  • a polished, hardened steel roller harder than the contacting brush, is employed which is mounted to be driven through a light frictional arrangement. Pressure of the card against the roller J will cause a slight retardation of the roller which retardation is progressive and varying so that as successive cards are sensed a constantly varying point of contact is presented to the brush.
  • Fig. 1 is a section of the card feeding and sensing section of asorting machine to which the present invention has been applied.
  • Fig. 2 is a section on line 22 of Fig. 1 showing the arrangement and construction of my improved contact roller.
  • the sorting machine to which the present improvements are applied may be that shown in my Patent No. 1,969,362, granted August 7, 1934.
  • record cards are advanced singly from the bottom of a stack I 0 (Fig. 1) by a picker I I which is reeiprocated under control of cam i2 and springs I 3.
  • Cam i2 is driven from main drive shaft M which is in constant rotation.
  • worms l5 which mesh with worm wheels I6 on cross shafts I1 to which are secured feeding rollers l8.
  • Picker ll advances a card to the first pair of 6 rollers l8 which advance it to the next pair and so on to its ultimate distination.
  • the sensing station comprising brush l9 and contact roller 20, which, upon sensing a perforation, complete an electrical 10 circuit as explained in my patent mentioned above, to select a sorting pocket to receive the card.
  • the perforations in the card are located in so-called index point positions distributed along the width of the card which is its direction of feeding.
  • Roller is mounted and driven as follows: On shaft I 4 is a worm-2
  • the opposite end of shaft 23 is sup- 25 ported in a bearing 26 fixed in frame 21.
  • the opposite end of roller 20 has an insulating bushing 28 secured thereto by a tight fit. Fitting tightly within bushing 28 is a metallic bushing 29 which is reamed to provide a free running fit 30 on shaft 23.
  • roller 20 Adjacent to bushing 29.is a freely mounted washer 30 between which and frame 21- is a coil spring 3
  • roller 20 is driven only through contact of its right hand end with surface 25 of member 24, the force of contact being provided by spring 3
  • Roller 20 is slightly greater in diameter than feed rollers! 1 so that its surface speed is slightly 40 greater and it rotates together with the feed rollers.
  • roller 20 will pick up again. The next card will again cause a slight retardation and so on, each succeeding card in turn causing a slight diiferential rotation with respect to the constantly driven feed rollers l1.
  • a record card feeding and sensing device comprising a pair of feed rollers for advancing a record card in a straight line with a constant rate of motion, a contact roller having its surface tangent to the line of travel of the card, frictional means for constantly driving said contact rollerat a peripheral speed greater than the speed of the advancing card, a contacting element engaging said roller, said feed rollers being arranged to feed the card between said element and said contact roller, at said constant rate of 2,208,018 t a l,” "-i ijfi motion, whereby said card, upon entering between the-eiement and contact roller, causes retardation of the roller against its frictional driving means.
  • a record card feeding and sensing device comprising a pair of feed rollers, means for driving said rollers to cause the surface thereof to travel at a predetermined linear speed, a contact roller positioned adjacent to said feed rollers, means" for frictionally driving said contact roller so that its surface speed is greater than the surface speed of the feed rollers, said feed rollers being arranged to feed a record card into engagement with the surface of said contact roller, and
  • sensing means for sensing successive cards, one card'at a time, while the card is in motion including a pair of cooperating elements between, which the card moves at a fixed rate of speed, one of said elements being ,a
  • roller means for impositively rotatingthe roller

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Conveying Record Carriers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US138764A 1937-04-24 1937-04-24 Perforated record sensing device Expired - Lifetime US2203013A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US138764A US2203013A (en) 1937-04-24 1937-04-24 Perforated record sensing device
FR836654D FR836654A (fr) 1937-04-24 1938-04-15 Dispositif explorateur pour machines comptables
GB12164/38A GB513883A (en) 1937-04-24 1938-04-22 Improvements in or relating to record-card controlled machines
DEI61139D DE676536C (de) 1937-04-24 1938-04-23 Vorrichtung zum Transport und zur Abfuehlung von Steuerkarten fuer Lochkartenmaschinen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US138764A US2203013A (en) 1937-04-24 1937-04-24 Perforated record sensing device

Publications (1)

Publication Number Publication Date
US2203013A true US2203013A (en) 1940-06-04

Family

ID=22483537

Family Applications (1)

Application Number Title Priority Date Filing Date
US138764A Expired - Lifetime US2203013A (en) 1937-04-24 1937-04-24 Perforated record sensing device

Country Status (4)

Country Link
US (1) US2203013A (fr)
DE (1) DE676536C (fr)
FR (1) FR836654A (fr)
GB (1) GB513883A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543906A (en) * 1947-02-07 1951-03-06 Ibm Perforated record analyzing means with removable brush holder
US2720360A (en) * 1950-03-31 1955-10-11 Ibm Card scanning mechanism
US3525855A (en) * 1965-02-08 1970-08-25 Kokusai Denshin Denwa Co Ltd Apparatus for reading out information punched into tapes or cards
US3562495A (en) * 1967-11-22 1971-02-09 Rollin J Lobaugh Inc Punchcard read-feed mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543906A (en) * 1947-02-07 1951-03-06 Ibm Perforated record analyzing means with removable brush holder
US2720360A (en) * 1950-03-31 1955-10-11 Ibm Card scanning mechanism
US3525855A (en) * 1965-02-08 1970-08-25 Kokusai Denshin Denwa Co Ltd Apparatus for reading out information punched into tapes or cards
US3562495A (en) * 1967-11-22 1971-02-09 Rollin J Lobaugh Inc Punchcard read-feed mechanism

Also Published As

Publication number Publication date
DE676536C (de) 1939-06-06
GB513883A (en) 1939-10-24
FR836654A (fr) 1939-01-24

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