US2285362A - Process for reconditioning perforated record cards - Google Patents

Process for reconditioning perforated record cards Download PDF

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Publication number
US2285362A
US2285362A US215301A US21530138A US2285362A US 2285362 A US2285362 A US 2285362A US 215301 A US215301 A US 215301A US 21530138 A US21530138 A US 21530138A US 2285362 A US2285362 A US 2285362A
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US
United States
Prior art keywords
card
mass
cards
reconditioning
magnet
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
US215301A
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English (en)
Inventor
Hermann A Rottke
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
Application granted granted Critical
Publication of US2285362A publication Critical patent/US2285362A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K21/00—Information retrieval from punched cards designed for manual use or handling by machine; Apparatus for handling such cards, e.g. marking or correcting
    • G06K21/08—Apparatus or tools for correcting punching or slotting errors and regeneration of record carriers

Definitions

  • the cards are scanned by a plurality of contact brushes under an electricpotential. When the brush encounters .a perforation, it contacts a contact-member on the opposite side of the card to cause a current to fiow and effect actuation of the accumulators.
  • the cards are usually laid out in "flelds with vertical lines separating each'eld.
  • the different fields may' represent different types of data, such as customer, date, order number, items of sale, amount, etc. It is frequently the case that a large part of a card may be: perforated to represent data which is fixed or constant, whereas a small part representing one or perhaps two fields may be perforated to represent data which is variable and which, therefore.,V may be changed.
  • Fig. 1 shows a front elevation of a mass applying device and a drying device.
  • Fig. 2 shows a side elevation of the drying device.
  • Fig. 1 the mass applying de'- vice is shown generally at A and the drying device generally at B.
  • the applying device is diagrammatically shown and is mounted on a base I suitably supported by standards 2 and enclosed by means of a housing 3 having an opening 4 normally closed by an air-tight cover 5.
  • a stack of cards 6 may be placed in a hopper I through the opening 4. bottom, one at a time, by means of a picker 8 connected by a. link 9 to pin I0 on the wheel'I I.
  • This type of picker feed is well known in the art and may be any suitable type such as that used in the Hollerith type of machine, such as is shown, for example, in the patent to E. A. Ford, No. 1,684,389, dated September 18, 1928.
  • the wheel II is rotated by drive 'shaft l2 connected thereto by means of beveled gears I3.
  • the drive shaft I2 is connected to one side of a friction clutch Ila which is normally held in closed con- 'at 2I and integral with an. amature 22 which cooperates with a magnet 23.
  • a friction clutch Ila which is normally held in closed con- 'at 2I and integral with an. amature 22 which cooperates with a magnet 23.
  • energization of the magnet 23 causes the clutch member Mb to disengage the member Ila and causes the wheel I I to stop.
  • Wheel I I is connected to a gear 24 which drives gear trains 25, 26, 21, 28, 29, 30, 3
  • the feed rollers may be thin disks which grip the edges of the card or they may be cylindrical rollers having a series of annular grooves which span the index point positions where the perforations lie on the cards.
  • a reservoir I3 for containing a supply of the plastic These cards are fed from the The wick 33 is mounted with one end in the reservoir of the plastic mass and is so adjusted that, when the bracket 34 iseievated bythe high point of the cam, the wick will wipe the card which is under the roller 21 and, when the bracket 34 is at its lowest point-of the cam, the wick will not touch the'card.
  • An opening in the case 43 is provided at 40 and is further provided with a slidable and air-tight gate member which may be raised or lowered by means of a r'od 4I to open or close the opening.
  • a suitable coupling such as a pipe coupling 42 is provided and is mounted to the case 43 of the drier generally shown at B and opens into the drier.
  • Another coupling 44 leading from the interior of the case 43 is provided for the purpose of attaching a vacuum pump to evacuate the air from i within the drier case.
  • a pulley wheel 43 Fixed to the shaft 41 is a pulley wheel 43 around which is wound a cord 49 having a weight 5l attached thereto which tends to rotate the drum in a clockwise direction.
  • the periphery of the drum is provided with ratchet teeth which are engaged by an escapement 52 pivoted at 53 and fixed to an armature 54.
  • the armature is associated with a magnet 55 so that upon the energization and deenergization of the magnet the single oscillation of the escapement 52 causes the drum to rotate an angular distance equivalent to a single tooth on the periphery.
  • There are an equal number of teeth and pockets so that the rotational advance of a single tooth presents a new pocket to receive a card.
  • a normally open contact 53 is mounted on the casing 43 and lies in the orbit of rotation of a pin 51 which extends from the side of the drum 45. When the drum rotates one complete revolution in a clockwise direction, thepin will strike the back of the contact blade 53 to eiect closure of the contacts 56.
  • the contact 55 and the magnet 55 are connected by means of a wire to a terminal board 59, mounted on the outside of the casing and provided with a series of sockets.
  • Movable plug wires are connected from-the terminal board 59 to the terminal board 8l, which terminal board is connected to the magnet 23 and to a pair of contacts 62.
  • the contacts 62 are controlled by a cam 53 which are rotated from the gear 32 so that the contacts open and close once each card feeding cycle.
  • Contacts 52 are connected in circuit with the magnet and contacts 56 are connected in circuit with the magnet 23.
  • the operation of the machine is as follows:
  • the 4drier B is coupled to the mass applying device A and the air exhausted therefrom by suitable means.
  • Cards are fed one by one from the bottom of the stack of cards to the feed rollers and, as the leading edge of each card just passes the wick 39, the cam 31 causes the wick to be raised against the card and the mass applied from the reservoir 33, holding the wick against the card until just prior to the following edge of the card passing the wick, at which time the wick is lowered away from the card.
  • the card continues to be fed through the opening of the gate at 40 and into one of the pockets 46 of the drum 45.
  • the cam 63 which operates once each card cycle causes the contacts 82 to close and open, which energizes and deenergizes the magnet 55 causing the drum to ro Atate one step and presenting an empty card pocket to receive the next card. These pockets merely support the cards along their outer edges.
  • the feeding of the cards continues with each card going into a separate empty pocket and the drum continually feeding in a clockwise direction until it becomes full, at which time the pin 51 strikes the back of the blade 58 to cause contact56 to close.
  • the closure of contact 55 completes a circuit through the magnet 23 to disengage clutchl members i4a and I4b and thereby cause lthe card lfeeding to stop.
  • a process for reconditioning a perforated record card controlling a tabulating machine, without materially altering its original dimensions said process utilizing a filling material comprising cellulose acetate, acetone, and methyl chloride in a plastic form and consisting of the step of applying a thin layer of said material to the surface of said card for injecting said material into said perforations, calendering said card to cause said material to fully occupy said perforations, said application and calendering being effected upon said card in a region of sub-atmospheric air pressure. and then subjecting said card to a region of normal atmospheric pressure, whereby said filling material in said perforations is urged to rapidly dry and harden.
  • a filling material comprising cellulose acetate, acetone, and methyl chloride in a plastic form and consisting of the step of applying a thin layer of said material to the surface of said card for injecting said material into said perforations, calendering said card to cause said material to fully occupy said per

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)
US215301A 1937-07-08 1938-06-22 Process for reconditioning perforated record cards Expired - Lifetime US2285362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE206855X 1937-07-08

Publications (1)

Publication Number Publication Date
US2285362A true US2285362A (en) 1942-06-02

Family

ID=5793385

Family Applications (1)

Application Number Title Priority Date Filing Date
US215301A Expired - Lifetime US2285362A (en) 1937-07-08 1938-06-22 Process for reconditioning perforated record cards

Country Status (6)

Country Link
US (1) US2285362A (enrdf_load_stackoverflow)
BE (1) BE428988A (enrdf_load_stackoverflow)
CH (1) CH206855A (enrdf_load_stackoverflow)
FR (1) FR840122A (enrdf_load_stackoverflow)
GB (1) GB516747A (enrdf_load_stackoverflow)
NL (1) NL51595C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265515A (en) * 1962-03-19 1966-08-09 Paul C Wilhelmsen Method for restoring punched cards

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265515A (en) * 1962-03-19 1966-08-09 Paul C Wilhelmsen Method for restoring punched cards

Also Published As

Publication number Publication date
NL51595C (enrdf_load_stackoverflow)
FR840122A (fr) 1939-04-19
BE428988A (enrdf_load_stackoverflow)
CH206855A (fr) 1939-08-31
GB516747A (en) 1940-01-10

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