US1514117A - Cotter-pin extractor - Google Patents

Cotter-pin extractor Download PDF

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Publication number
US1514117A
US1514117A US498844A US49884421A US1514117A US 1514117 A US1514117 A US 1514117A US 498844 A US498844 A US 498844A US 49884421 A US49884421 A US 49884421A US 1514117 A US1514117 A US 1514117A
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United States
Prior art keywords
pin
arm
cotter
tool
arms
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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
US498844A
Inventor
Frank W Wilder
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Individual
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Individual
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Priority to US498844A priority Critical patent/US1514117A/en
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Publication of US1514117A publication Critical patent/US1514117A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/08—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing cotter pins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53796—Puller or pusher means, contained force multiplying operator
    • Y10T29/53809—Cotter pin and cooperating member

Definitions

  • This invention relates to a tool which is primarily designed for extracting cotter pins from the holes in which they, are located although it may have characteristics which enable it to be used for driving, clinching and unclinching such pins.
  • the objects of the invention is to provide a simple, cheap, powerful and convenient tool which can be used for withdrawing cotter pins of all sizes not only from easily accessible positions but from localities and situations which are more or less inaccessible to the means commonly employed for the purpose.
  • This object is attained by bending a rod or bar ot suitable metal so as to form two arms, one desirably longer than the other, disposed at an angle with each other, and shaping the ends of the arms so that they may be readily engaged with cotter pins for performing the desired functions of ear- I tracting, or clinching, or unclinching, or
  • Figure 1 shows an edge view of a tool that embodies the invention.
  • Fig. 2 is a side View of the same tool.
  • Fig. 3 is a section on the line on Fig. 2.
  • Fig. 4 shows a side view of a modified form of the tool.
  • Fig. is a section on the line 55 on Fig. 1.
  • Fig. 6 shows a side View of another modification.
  • Fig. 7 is a section on line 7-7 on Fig. 6.
  • Fig. 8 is a section on line 88 on Fig. 6.
  • the tool first illustrated is bent from a rod or bar of steel of suitable size and any desired cross section to form a long arm 1 and a short arm 2 which extend at sub stantially right angles to each other.
  • the angular disposition of these arms may however at the bend 3 be slightly greater or less than a right angle.
  • the arm 2 is shown as oval in cross section and it tapers down to a nxraaoroa.
  • the arm 1 is shown as flattened and as tapering down to a chisel or screw driver end 5.
  • the bend at the junction of the arms is shaped as to form a head 6 opposite the arm 2 which may be struck a blow with a hammer when it is desired to drive the point 4: of the arm2 into the eye of a cotter pin.
  • the head 7 also provides a point that may be struck when necessary to start a pin engaged by the arm 2.
  • the outer corner of the bend at the junction of the arms between the heads is rounded so as to form a fulcrum upon which the tool may be rocked when withdrawing a pin into which an arm is driven.
  • the pointt is forced into the eye of a cotter pin by hand or by the blow of a hammer struck against the head 6 and by the wedging action of the arm 2 the pin started from its position. Owing to the wedge shape of the arm this is ordinarily sutlicient to cause the bent ends of the pin to draw together and the pin to start from its hole. Then the tool is rocked on the fulcrum corner at the bend and the pin completely withdrawn. If the pin sticks in the hole the tool may be hit on the head 7 by a hammer for releasing it.
  • This head' may be hit by a hammer when the chisel end of the long arm is driven between the points of a pin for separating them or when the chisel end is driven under the bent ends of a pin for unclinching them.
  • the head 6 may be used as a hammer the arm 1 being grasped in the hand for driving a pin into its hole or for bending the ends of a driven pm.
  • the arm 2 is an oval pointed wedge and the arm 1 is a chisel ended wedge.
  • the arm may be circular in cross section as is the arm 8 in Fig. 4, and instead of having a chisel end the long arm may be rounded as arms of unequal length extending at substantially right angles to each other, the shorter of said arms tapering to a point and the outer surface of the bar at the bend thereof being rounded and free from projections.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Description

Nov. 4 1924. 1,514.11?
F. W. WIL-DER COTTER PIN EXTRACTOR Filed Sept. 6 1921 Patented Nov. t, 1924 FRANK W. ELDER, OF VJATERTOXVN, CONNECTICUT.
COT'lEfi-PIN Application filed September To all whom it may concern:
Be it known that I, FRANK W. VViLDER,
I a citizen of the United States, residing at lVatertown, in the county of Litchfield and State of Connecticut, have invented a new and useful Improvement in Cotter-Pin EX- tractors, of which the following is a specification.
This invention relates to a tool which is primarily designed for extracting cotter pins from the holes in which they, are located although it may have characteristics which enable it to be used for driving, clinching and unclinching such pins.
The objects of the invention is to provide a simple, cheap, powerful and convenient tool which can be used for withdrawing cotter pins of all sizes not only from easily accessible positions but from localities and situations which are more or less inaccessible to the means commonly employed for the purpose.
This object is attained by bending a rod or bar ot suitable metal so as to form two arms, one desirably longer than the other, disposed at an angle with each other, and shaping the ends of the arms so that they may be readily engaged with cotter pins for performing the desired functions of ear- I tracting, or clinching, or unclinching, or
driving, as the condition requires.
In the accompanying drawings Figure 1 shows an edge view of a tool that embodies the invention. Fig. 2 is a side View of the same tool. Fig. 3 is a section on the line on Fig. 2. Fig. 4 shows a side view of a modified form of the tool. Fig. is a section on the line 55 on Fig. 1. Fig. 6 shows a side View of another modification. Fig. 7 is a section on line 7-7 on Fig. 6. Fig. 8 is a section on line 88 on Fig. 6.
The tool first illustrated is bent from a rod or bar of steel of suitable size and any desired cross section to form a long arm 1 and a short arm 2 which extend at sub stantially right angles to each other. The angular disposition of these arms may however at the bend 3 be slightly greater or less than a right angle. The arm 2 is shown as oval in cross section and it tapers down to a nxraaoroa.
e, 1921. Serial in. 498,844.
point s so as to form an oval pointed wedge. The arm 1 is shown as flattened and as tapering down to a chisel or screw driver end 5. The bend at the junction of the arms is shaped as to form a head 6 opposite the arm 2 which may be struck a blow with a hammer when it is desired to drive the point 4: of the arm2 into the eye of a cotter pin. There is also a head 7 opposite the arm 1 which may be struck a blow with a hammer when it is desired to drive the chisel end 5 of the arm 1 between the ends of a pin for separating them or beneath the pin ends for unclinching them. The head 7 also provides a point that may be struck when necessary to start a pin engaged by the arm 2. The outer corner of the bend at the junction of the arms between the heads is rounded so as to form a fulcrum upon which the tool may be rocked when withdrawing a pin into which an arm is driven.
The pointt is forced into the eye of a cotter pin by hand or by the blow of a hammer struck against the head 6 and by the wedging action of the arm 2 the pin started from its position. Owing to the wedge shape of the arm this is ordinarily sutlicient to cause the bent ends of the pin to draw together and the pin to start from its hole. Then the tool is rocked on the fulcrum corner at the bend and the pin completely withdrawn. If the pin sticks in the hole the tool may be hit on the head 7 by a hammer for releasing it. This head'may be hit by a hammer when the chisel end of the long arm is driven between the points of a pin for separating them or when the chisel end is driven under the bent ends of a pin for unclinching them. The head 6 may be used as a hammer the arm 1 being grasped in the hand for driving a pin into its hole or for bending the ends of a driven pm.
In the form described the arm 2 is an oval pointed wedge and the arm 1 is a chisel ended wedge. Instead of being oval the arm may be circular in cross section as is the arm 8 in Fig. 4, and instead of having a chisel end the long arm may be rounded as arms of unequal length extending at substantially right angles to each other, the shorter of said arms tapering to a point and the outer surface of the bar at the bend thereof being rounded and free from projections. 1
FRANK W; W'ILDER.
US498844A 1921-09-06 1921-09-06 Cotter-pin extractor Expired - Lifetime US1514117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US498844A US1514117A (en) 1921-09-06 1921-09-06 Cotter-pin extractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US498844A US1514117A (en) 1921-09-06 1921-09-06 Cotter-pin extractor

Publications (1)

Publication Number Publication Date
US1514117A true US1514117A (en) 1924-11-04

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US498844A Expired - Lifetime US1514117A (en) 1921-09-06 1921-09-06 Cotter-pin extractor

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693726A (en) * 1951-03-14 1954-11-09 Warren E Coonan Cotter pin spreading pliers
FR2546100A1 (en) * 1983-05-17 1984-11-23 Racodon Sa Expl Pin punch (drift) with interchangeable blades, which can be used especially for unlocking car doors and boots
US4722129A (en) * 1986-12-22 1988-02-02 Gte Government Systems Corporation Tool for extracting insulated wires from a shielded cable
DE4424417C1 (en) * 1994-07-12 1995-11-09 Peter Zierfus Split pin extractor
EP1097784A1 (en) * 1999-11-03 2001-05-09 TELEFONAKTIEBOLAGET L M ERICSSON (publ) A tool mounting cage nuts and a method for utilising the same
US20190099867A1 (en) * 2017-10-04 2019-04-04 Jonathan Whitmore Method and Tool for Engaging and Disengaging Insulator Cotter Keys

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693726A (en) * 1951-03-14 1954-11-09 Warren E Coonan Cotter pin spreading pliers
FR2546100A1 (en) * 1983-05-17 1984-11-23 Racodon Sa Expl Pin punch (drift) with interchangeable blades, which can be used especially for unlocking car doors and boots
US4722129A (en) * 1986-12-22 1988-02-02 Gte Government Systems Corporation Tool for extracting insulated wires from a shielded cable
DE4424417C1 (en) * 1994-07-12 1995-11-09 Peter Zierfus Split pin extractor
EP1097784A1 (en) * 1999-11-03 2001-05-09 TELEFONAKTIEBOLAGET L M ERICSSON (publ) A tool mounting cage nuts and a method for utilising the same
US20190099867A1 (en) * 2017-10-04 2019-04-04 Jonathan Whitmore Method and Tool for Engaging and Disengaging Insulator Cotter Keys
US10875164B2 (en) * 2017-10-04 2020-12-29 Jonathan Whitmore Method and tool for engaging and disengaging insulator cotter keys

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