US2566920A - Skip bar for punching machines - Google Patents

Skip bar for punching machines Download PDF

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Publication number
US2566920A
US2566920A US656045A US65604546A US2566920A US 2566920 A US2566920 A US 2566920A US 656045 A US656045 A US 656045A US 65604546 A US65604546 A US 65604546A US 2566920 A US2566920 A US 2566920A
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United States
Prior art keywords
rack
skip
bar
escapement
dog
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
US656045A
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English (en)
Inventor
Brand Samuel
Cuningham James Mason
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
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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 US656045A priority Critical patent/US2566920A/en
Priority to FR941294D priority patent/FR941294A/fr
Application granted granted Critical
Publication of US2566920A publication Critical patent/US2566920A/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
    • 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
    • G06K13/04—Details, e.g. flaps in card-sorting apparatus

Definitions

  • This invention concerns punching machines and more particularly record card punching
  • the principal object of the invention is to prov vide an improved carriage escapement mechanism for controlling the advance and escapement of a record card carriage such as the card carriage o f a tabulating card punching or like machine, wherein there is a shiftable carriage requiring a device to control the escapement movement of the carriage across the machine.
  • a well known form of tabulating card has a series of evenly spaced columns to be provided with data by a punching machine, such as is disclosed in the Brand and Cunningham Patent 2,333,461, granted November 2, 1943.
  • a punching machine such as is disclosed in the Brand and Cunningham Patent 2,333,461, granted November 2, 1943.
  • Such machine has a carriage for advancing a card to position the individual card columns opposite the machine punching dies, the card carriage being advanced under control of an escapement device.
  • the escapement device has comprised an escapement rack and a so-called skip bar.
  • the skip bar was carried by the escapement rack, and it so controlled the carriage operation that certain card fields or columns would skip the punching dies and, therefore, would not be punched.
  • This skip bar heretofore has been provided in the form of a solid bar having notches in its lower edge for temporary mounting on headed pins projecting from the escapement rack and the upper edge has been configured to provide depressed portions opposite the escapement teeth of the rack for the card fields to be punched and raised portions opposite the escapement teeth for card elds to be skipped.
  • this universal skip bar is arranged for ready removal so that another similar bar with a different adjustment may be quickly substituted therefor.
  • the arrangement has the advantage of requiring only a single skip bar whose escapement pattern may be readily modified in cases where such pattern is utilized for a brief period, and it has the further advantage in that as for the prior skip bars, when an escapement pattern is frequently employed, such pattern may' be retained on a bar and the entire bar placed on the rack when needed.
  • Fig. 1 is a view showing the escapement dogs and rack of a well known card punching machine, with the universal skip bar mounted thereon.
  • Fig. 2 is a plan section taken on lines 2--2 of Fig. l showing the relative locations of the punches, card carriage and escapement devices.
  • Fig. 3 is a sectional elevation taken on lines 3-3 of Fig. 2.
  • Fig. 4 is a perspective view of one of the insertible "skip stop pins.
  • Fig. 5 is a detail showing the escapement mechanism in position to release the rack for skipping.
  • Fig. 6 is a detail showing the action of a skip stop pin to interrupt the skipping operation.
  • the punching machine which is of the type shown in Patent 2,333,461 referred to has a stationary framework identied generally at I0, upon which a rack I I is mounted for horizontal reciprocation in suitable supports.
  • rollers I2 carried by the rack ride along a guide rail I3 and are biased toward the right by a gear I4 in mesh with teeth I5 on the under edge of the rack.
  • Gear I4 is connected in the usual manner to a suitable spring drum, not shown.
  • the rack II has secured thereto a cardl pusher I6 and a card guide I1 between which a card C is placed and supported on a ilat portion of the framework I0.
  • the card C and the rack Il then move together relative to a xed column of punches indicated at I8.
  • rack II The upper edge of rack II is formed with the usual escapement teeth I9 spaced to correspond to the columnar spacing of the data columns of the card.
  • a handle or finger piece 20 connected to the rack Il enables the operator to manually slide the rack and supported card C to the left as seen in Fig. 1 to prepare the machine for a card punching operation by presenting a selected card column to the row of punches.
  • a lever 31 pivoted at 38 to the fixed framework and biased clockwise as viewed in Fig. 1 by a spring pressed plunger 39.
  • An opening in the lever cooperates with a xed pin 40 to serve as a limit stop for the lever.
  • the left hand end of lever 31 is notched as at 4
  • This free end of the skip lifter 35 has the usual incline 42 and passes beneath dog 2
  • Fig. shows the relative positions of the parts with the skip lifter 35 in its outer position.
  • the devices for rocking lever 31 comprise a bar 45 having recesses 46 and 41 at opposite ends and a handle 48.
  • This bar is removably mounted between a spring remove the bar' 45, handle 48 is gripped and the bar shifted to the left to slide detent 49 sidewise. This frees recess 41 from lug 50 and the bar is then tilted counterclockwise and lifted out. To insert, the procedure of removal is reversed.
  • may be inserted into any one of the slots 52 and U-shaped spring blades 53 serve to retain the pin in inserted position. Pins 5
  • a carriage escapement device for a record punching machine comprising an escapement rack, a skip bar detachably secured to said rack, a dog normally engaging said rack to hold it against movement, a lever having a camming edge, a skip lifter cooperable with said camming edge to raise and hold the dog out of engagement with the rack to free the rack for a skipping movement, and an element carried bythe skip bar for moving the said lever away from the skip lifter whereby the skip lifter will be released to enable the dog to drop back into vengagement with the rack.
  • a carriage escapement device for a record punching machine comprising an escapement rack, a dog normallyengaging said rack to hold it against movement, a spring holding the dog in rack-engaging position, a lever adjacent to said dog, .a spring normally holding the lever against movement, a skip lifter having a camming surface operable to cam against the lever and raise the dog out of the rack to free the rack for a skipping movement, an element carried by the rack for rocking the lever against its spring and moving it away from the skip lifter whereby the spring on the dog will cause the dog to reengage the rack.
  • a carriage escapement'device comprising an escapement rack, a bar, a'spring latching device for detachably mounting said bar on the rack, said bar having a row of transverse open-sided 5 6 slots therein, a. skip-stop pin having a. cam head UNITED STATES PATENTS and a shouldered shank insertible in'any of said Number Name Date slots. and a leaf spring ensaseable with the 1,954,232 weimich Apr, 10, 1934 shoulderedY notch through said open side of the 3 013,543 Page sept 3 1935 seat to yieldably hold the pin within the slot.
  • i 21064.34() Davis-: Dec. 15: 1936 SAMUEL BRAND- G 2,191,134 Wannen Feb. 1.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US656045A 1946-03-21 1946-03-21 Skip bar for punching machines Expired - Lifetime US2566920A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US656045A US2566920A (en) 1946-03-21 1946-03-21 Skip bar for punching machines
FR941294D FR941294A (fr) 1946-03-21 1947-03-20 Barre de saut pour machines à perforer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US656045A US2566920A (en) 1946-03-21 1946-03-21 Skip bar for punching machines

Publications (1)

Publication Number Publication Date
US2566920A true US2566920A (en) 1951-09-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
US656045A Expired - Lifetime US2566920A (en) 1946-03-21 1946-03-21 Skip bar for punching machines

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US (1) US2566920A (fr)
FR (1) FR941294A (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB294527A (fr) * 1927-07-25 1928-12-20 Ste Anonyme Andre Citroen
US1954232A (en) * 1931-02-14 1934-04-10 Ibm Card punch feed mechanism
US2013543A (en) * 1934-07-05 1935-09-03 Ibm Perforating machine
US2064340A (en) * 1927-07-08 1936-12-15 Underwood Elliott Fisher Co Combined typewriting, bookkeeping, and card-perforating machine
US2107134A (en) * 1931-02-14 1938-02-01 Ibm Card punch feed mechanism
US2365189A (en) * 1943-12-14 1944-12-19 Grady Benjamin Carriage escapement device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2064340A (en) * 1927-07-08 1936-12-15 Underwood Elliott Fisher Co Combined typewriting, bookkeeping, and card-perforating machine
GB294527A (fr) * 1927-07-25 1928-12-20 Ste Anonyme Andre Citroen
US1954232A (en) * 1931-02-14 1934-04-10 Ibm Card punch feed mechanism
US2107134A (en) * 1931-02-14 1938-02-01 Ibm Card punch feed mechanism
US2013543A (en) * 1934-07-05 1935-09-03 Ibm Perforating machine
US2365189A (en) * 1943-12-14 1944-12-19 Grady Benjamin Carriage escapement device

Also Published As

Publication number Publication date
FR941294A (fr) 1949-01-06

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