US2490478A - Wrench socket retainer - Google Patents

Wrench socket retainer Download PDF

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Publication number
US2490478A
US2490478A US642689A US64268946A US2490478A US 2490478 A US2490478 A US 2490478A US 642689 A US642689 A US 642689A US 64268946 A US64268946 A US 64268946A US 2490478 A US2490478 A US 2490478A
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US
United States
Prior art keywords
socket
retainer
tool head
sleeve
wrench
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
US642689A
Inventor
Raymond J Schaedler
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.)
Chicago Pneumatic Tool Co LLC
Original Assignee
Chicago Pneumatic Tool Co LLC
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 Chicago Pneumatic Tool Co LLC filed Critical Chicago Pneumatic Tool Co LLC
Priority to US642689A priority Critical patent/US2490478A/en
Application granted granted Critical
Publication of US2490478A publication Critical patent/US2490478A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • 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
    • Y10T279/00—Chucks or sockets
    • Y10T279/17—Socket type
    • Y10T279/17042—Lost motion
    • Y10T279/17094—Sleeve type retainer

Definitions

  • This invention relates to retainers for secur ing a wrenchnooket .in "operative position on the tool head of apoweroperated Wrench, p articularly a wrench of the impact type.
  • Power operated Wrenches of the impact type comprise atool head,rthe lower-oriorward portion of ,which is provided ⁇ with a polygonal extensionwhich slidably engages a socketaiQrmed to'cooperate With the driven ⁇ pieceusually .-a nut orgbolt.
  • the rotary motion of the toolfhead is.,transmitted through thesncket to thefdr-i-ven piece.
  • Such motion derives from a reversible airmotor, which is controlled to-rotatefclock- Wise to-run in a right threaded-piece or-torun out a.left threaded piece an,d. .eountereli0ckwise torun ina left threaded piece and to-,run-out a right threaded piece.
  • a clutch hammer assembly Arranged between the air motor and the tool head is a clutch hammer assembly.
  • the clutch may impart continuous and substantially uniform rotation to the tool head.
  • the clutch is designed to respond to the torque requirements of the driven piece, and under conditions of excessive tortional resistance, particularly after the seating of the driven piece when there is an abrupt increase of resistance, the clutch operates to effect a series of disengagements and impacts by hammer elements upon the anvil portions of the f tool head.
  • a motor driven wrench provided with such a clutch arrangement is disclosed in Patent No. 2,285,638, granted June 9, 1942 to Lester A. Amtsberg.
  • the socket detachably ts the end of the tool head, and on account of the heavy duty to which the device is subjected, play will develop between the socket and the head. This usually results in a tendency for these elements to disengage.
  • a further object is the provision of a retainer easily and rapidly engageable with, or disengageable from, the socket when the latter is attached to, or detached from, the tool head.
  • a feature of the invention resides in a swivel i connection between the retainer and tool head, or between the retainer and socket, or both.
  • -fFia 2 is longitudinal Sectional View ,of :the retainer; A ⁇ .and
  • Fig,,3 is.abottomfplanwiewrofftne retainer- Figa 2 andfarefdrawnfto.-aclareersoalethan Fia l.
  • Ja tool @head rl 3 is :supported fior rotation intneafrontorflower end Oia wrench housing I4.
  • the tool head has a cylindrical shank I5 which terminates in a square projection I6 to nt and drive a corresponding apertured socket I'I.
  • the socket Il is adapted for engagement with the driven piece (not shown), usually a nut or bolt.
  • the retainer I8 is provided.
  • the retainer is preferably made of steel, although any suitable metallic alloy or plastic compound may be used.
  • the retainer comprises a sleeve I9, the wall of which turns inwardly at its upper portion to form a shoulder 2B and then turns upwardly to form a tubular projection 2I the interior shape and size of which conforms to the shank portion I5 of the tool head so as to eiect a sliding engagement therewith.
  • the periphery of the tool head shank I5 is formed with an annular groove 22 adjacent its lower end.
  • a snap ring 23 is provided for seating in the groove, the ring being of suiiiciently large cross section so that the outside diameter of the ring, in seated position, shall be somewhat greater than the inside diameter of the upward projection of the retainer.
  • the lower portion or sleeve I9 of the retainer is of somewhat larger internal diameter than the outside diameter of the top face of the socket and it is formed with spaced longitudinal slits 24 to provide resiliency.
  • the sleeve is also formed with an inward annular crimp 25, the inside diameter of the sleeve measured at the crest of the crimp being somewhat less than the outside diameter of the top face of the socket.
  • the socket has a peripheral recess 26 adjacent its upper end. Accordingly, as the socket is forced upwardly into position upon the tool head, after the retainer has been mounted as hereinabove described, the sleeve will yield outwardly as the head of the.
  • the socket is moved past the crimp, but will be urged back to normal position by the resiliency of the sleeve, thus providing for retaining the socket against longitudinal movement upon the tool head shank.
  • the peripheral recess 26 will be disposed opposite the crimp, and the sleeve sections will press inwardly against the recess in the socket with suilcient force to prevent longitudinal movement of the socket on the tool head under conditions of ordinary operative usage. Such inward pressure, however, will allow for the manual removal of the socket.
  • the engagement of the retainer with the socket is yieldable only, and the engagement between the retainer and the tool head is likewise yieldable only.
  • the retainer due to its inertia, will continue to rotate with reference to the tool head and socket, acting as a swivel.
  • Such swivelling arrangement avoids torsional strains upon the retainer such as would result if any portionof the sleeve were in xed engagement with the wrench and subject to abrupt action.
  • the socket can be readily attached to or detached from the tool head with a simple push or pull on the socket.
  • the invention is advantageous over the conventional pin retainer ar- 4 rangement which requires a considerable time for the removal of the pin.
  • the tool head of a rotatable power tool having an exterior annular groove, a socket member mounted thereon to rotate ln unison therewith and having an exterior peripheral recess, retainer means for maintaining the socket on the tool head comprising a sleeve, said sleeve being adapted at one end to engage the tool head in swivel relation, and adapted at the other end to engage the socket in swivel relationship by means of an inward annular crimp which engages with the peripheral recess of the socket, said latter end having a plurality of slits to provide yieldability for the insertion of the socket under slight pressure, and a ring means mounted in the tool head groove and arranged to maintain the sleeve on the tool head.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

Dec. 6, 1949 R. J. SCHAEDLER WRENCH SOCKET RETAINER Filed Jan. 22, 1946 WVG H101, @www db2/M5045@ #Wwf/5, Maw
N MAW/1A Patented Dec. 6, 1949 WRENCH S O'CKET RETAI-NEB.
Application January.=22, 19416, SeriaIfNo.2642,689
ALClninrl. .(Cl. 27.9eel9r) This invention relates to retainers for secur ing a wrenchnooket .in "operative position on the tool head of apoweroperated Wrench, p articularly a wrench of the impact type.
Power operated Wrenches of the impact type comprise atool head,rthe lower-oriorward portion of ,which is provided `with a polygonal extensionwhich slidably engages a socketaiQrmed to'cooperate With the driven `pieceusually .-a nut orgbolt. The rotary motion of the toolfhead is.,transmitted through thesncket to thefdr-i-ven piece. Such motion derives from a reversible airmotor, which is controlled to-rotatefclock- Wise to-run in a right threaded-piece or-torun out a.left threaded piece an,d. .eountereli0ckwise torun ina left threaded piece and to-,run-out a right threaded piece.
Arranged between the air motor and the tool head is a clutch hammer assembly. During the free running period when the driven piece oiers relatively light resistance, the clutch may impart continuous and substantially uniform rotation to the tool head. But the clutch is designed to respond to the torque requirements of the driven piece, and under conditions of excessive tortional resistance, particularly after the seating of the driven piece when there is an abrupt increase of resistance, the clutch operates to effect a series of disengagements and impacts by hammer elements upon the anvil portions of the f tool head. A motor driven wrench provided with such a clutch arrangement is disclosed in Patent No. 2,285,638, granted June 9, 1942 to Lester A. Amtsberg.
The socket detachably ts the end of the tool head, and on account of the heavy duty to which the device is subjected, play will develop between the socket and the head. This usually results in a tendency for these elements to disengage.
It is an object of this invention to provide a retainer to prevent longitudinal or axial movement of the socket on the tool head which might result in accidental disengagement therebetween.
A further object is the provision of a retainer easily and rapidly engageable with, or disengageable from, the socket when the latter is attached to, or detached from, the tool head.
A feature of the invention resides in a swivel i connection between the retainer and tool head, or between the retainer and socket, or both.
Other objects and features will appear more clearly from the description of the invention which follows:
v:ln theaccompanying.drawingfwhich-Lillustrates one embodiments@ ethejinvcntion, .andiin which like-.reference @characters .f designate :like fpartsr ig. 1.SfazvieW-:Qftheonwardor lower por- .tionfof'theMembern@ socket,thezretainern .its prcferredorm, andra snanaringzbeng ,in longitudinalzsection. ...and utherorward portion of the tool zhead; and :housingfbeng1in-elevation;
-fFia 2 is longitudinal Sectional View ,of :the retainer; A`.and
.Fig,,3 is.abottomfplanwiewrofftne retainer- Figa 2 andfarefdrawnfto.-aclareersoalethan Fia l.
In `the.:illustrative embodiment -of .the invention ,(Fig- .12., Ja tool @head rl 3 is :supported fior rotation intneafrontorflower end Oia wrench housing I4. The tool head has a cylindrical shank I5 which terminates in a square projection I6 to nt and drive a corresponding apertured socket I'I. The socket Il is adapted for engagement with the driven piece (not shown), usually a nut or bolt.
To retain the socket I1 upon the tool head by preventing it from sliding therefrom, the retainer I8 is provided. The retainer is preferably made of steel, although any suitable metallic alloy or plastic compound may be used. The retainer comprises a sleeve I9, the wall of which turns inwardly at its upper portion to form a shoulder 2B and then turns upwardly to form a tubular projection 2I the interior shape and size of which conforms to the shank portion I5 of the tool head so as to eiect a sliding engagement therewith.
The periphery of the tool head shank I5 is formed with an annular groove 22 adjacent its lower end. A snap ring 23 is provided for seating in the groove, the ring being of suiiiciently large cross section so that the outside diameter of the ring, in seated position, shall be somewhat greater than the inside diameter of the upward projection of the retainer. After the retainer has been mounted upon the tool head shank I5, the snap ring is disposed into position in the groove, thereby securing the retainer against axial movement downwardly along the tool head shank I5.
The lower portion or sleeve I9 of the retainer is of somewhat larger internal diameter than the outside diameter of the top face of the socket and it is formed with spaced longitudinal slits 24 to provide resiliency. The sleeve is also formed with an inward annular crimp 25, the inside diameter of the sleeve measured at the crest of the crimp being somewhat less than the outside diameter of the top face of the socket. The socket has a peripheral recess 26 adjacent its upper end. Accordingly, as the socket is forced upwardly into position upon the tool head, after the retainer has been mounted as hereinabove described, the sleeve will yield outwardly as the head of the. socket is moved past the crimp, but will be urged back to normal position by the resiliency of the sleeve, thus providing for retaining the socket against longitudinal movement upon the tool head shank. As the socket reaches seating position upon the tool head, the peripheral recess 26 will be disposed opposite the crimp, and the sleeve sections will press inwardly against the recess in the socket with suilcient force to prevent longitudinal movement of the socket on the tool head under conditions of ordinary operative usage. Such inward pressure, however, will allow for the manual removal of the socket.
In the embodiment shown the engagement of the retainer with the socket is yieldable only, and the engagement between the retainer and the tool head is likewise yieldable only. Upon any stopping or abrupt retardation of rotation of the tool head and socket because of a sudden increase of resistance, as when the driven piece is seated, the retainer, due to its inertia, will continue to rotate with reference to the tool head and socket, acting as a swivel. Such swivelling arrangement avoids torsional strains upon the retainer such as would result if any portionof the sleeve were in xed engagement with the wrench and subject to abrupt action.
The socket can be readily attached to or detached from the tool head with a simple push or pull on the socket. Thus the invention is advantageous over the conventional pin retainer ar- 4 rangement which requires a considerable time for the removal of the pin.
What is claimed is:
In combination, the tool head of a rotatable power tool having an exterior annular groove, a socket member mounted thereon to rotate ln unison therewith and having an exterior peripheral recess, retainer means for maintaining the socket on the tool head comprising a sleeve, said sleeve being adapted at one end to engage the tool head in swivel relation, and adapted at the other end to engage the socket in swivel relationship by means of an inward annular crimp which engages with the peripheral recess of the socket, said latter end having a plurality of slits to provide yieldability for the insertion of the socket under slight pressure, and a ring means mounted in the tool head groove and arranged to maintain the sleeve on the tool head.
RAYMOND J. SCHAEDLER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 952,570 Lamb Mar. 22, 1910 1,220,100 Haeseler Mar. 20, 1917 1,462,293 Mason July 17, 1923 1,801,577 Stevens Apr. 21, 1931 1,847,843 McKeagan Mar. 1, 1932 1,882,520 Pollard Oct. 11, 1932 1,982,278 Allen Nov. 27, 1934 2,154,651 Wodack Apr. 18, 1939 2,410,600 Cowles Nov. 5, 1946
US642689A 1946-01-22 1946-01-22 Wrench socket retainer Expired - Lifetime US2490478A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222959A (en) * 1964-02-06 1965-12-14 Wade Stevenson Magnetic driving tool or implement
US6609281B2 (en) 2001-09-04 2003-08-26 John T. Morrison Hand tool for brake shoe spring-retaining cup
DE10304246B4 (en) * 2001-11-28 2006-03-23 Bobby Hu Wrench adapter
US20070169591A1 (en) * 2006-01-20 2007-07-26 Cal Schincariol Method of securing a connection in a drive assembly and a securely connected drive assembly
DE102004006772B4 (en) * 2003-02-11 2010-12-02 Benedikt Alber Wrench

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US952570A (en) * 1909-06-10 1910-03-22 Amherst G Lamb Hand-tool.
US1220100A (en) * 1915-03-29 1917-03-20 Charles H Haeseler Fluid-pressure hammer.
US1462293A (en) * 1919-07-12 1923-07-17 Mason John Tool for pneumatic riveters
US1801577A (en) * 1928-09-25 1931-04-21 Chicago Pneumatic Tool Co Rivet-set clip
US1847843A (en) * 1930-07-24 1932-03-01 Norman B Mckeagan Pneumatic tool
US1882520A (en) * 1930-05-19 1932-10-11 Arrow Tools Inc Power operated reciprocating tool device
US1982278A (en) * 1934-07-11 1934-11-27 Ingersoll Rand Co Implement retainer
US2154651A (en) * 1937-03-04 1939-04-18 Wodack Electric Tool Corp Tool retainer for portable power driven tools
US2410600A (en) * 1943-08-12 1946-11-05 Cowles Irving Flexible conduit and coupling for same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US952570A (en) * 1909-06-10 1910-03-22 Amherst G Lamb Hand-tool.
US1220100A (en) * 1915-03-29 1917-03-20 Charles H Haeseler Fluid-pressure hammer.
US1462293A (en) * 1919-07-12 1923-07-17 Mason John Tool for pneumatic riveters
US1801577A (en) * 1928-09-25 1931-04-21 Chicago Pneumatic Tool Co Rivet-set clip
US1882520A (en) * 1930-05-19 1932-10-11 Arrow Tools Inc Power operated reciprocating tool device
US1847843A (en) * 1930-07-24 1932-03-01 Norman B Mckeagan Pneumatic tool
US1982278A (en) * 1934-07-11 1934-11-27 Ingersoll Rand Co Implement retainer
US2154651A (en) * 1937-03-04 1939-04-18 Wodack Electric Tool Corp Tool retainer for portable power driven tools
US2410600A (en) * 1943-08-12 1946-11-05 Cowles Irving Flexible conduit and coupling for same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222959A (en) * 1964-02-06 1965-12-14 Wade Stevenson Magnetic driving tool or implement
US6609281B2 (en) 2001-09-04 2003-08-26 John T. Morrison Hand tool for brake shoe spring-retaining cup
DE10304246B4 (en) * 2001-11-28 2006-03-23 Bobby Hu Wrench adapter
DE102004006772B4 (en) * 2003-02-11 2010-12-02 Benedikt Alber Wrench
US20070169591A1 (en) * 2006-01-20 2007-07-26 Cal Schincariol Method of securing a connection in a drive assembly and a securely connected drive assembly
US7412915B2 (en) * 2006-01-20 2008-08-19 Cal Schincariol Method of securing a connection in a drive assembly and a securely connected drive assembly

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