US2201705A - Ratchet wrench - Google Patents

Ratchet wrench Download PDF

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Publication number
US2201705A
US2201705A US220016A US22001638A US2201705A US 2201705 A US2201705 A US 2201705A US 220016 A US220016 A US 220016A US 22001638 A US22001638 A US 22001638A US 2201705 A US2201705 A US 2201705A
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US
United States
Prior art keywords
wrench
pawls
slots
ratchet
shown
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
US220016A
Inventor
Arthur P Stone
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.)
WRIGHT TOOL AND FORGE Co
Original Assignee
WRIGHT TOOL AND FORGE Co
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.)
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Publication date
Application filed by WRIGHT TOOL AND FORGE Co filed Critical WRIGHT TOOL AND FORGE Co
Priority to US220016A priority Critical patent/US2201705A/en
Application granted granted Critical
Publication of US2201705A publication Critical patent/US2201705A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B13/00Spanners; Wrenches
    • B25B13/46Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
    • B25B13/463Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel

Description

A P STONE 2,201,705

RATCHET WRENCH Filed July 19, 1938 lll Patented May 21, 1940 UNITED STATES PATENT OFFICE RATCHET WRENCH Arthur P. Stone, Akron, Ohio, assignor to `The Wright Tool and Forge Company, Barberton, Ohio, a corporation of Ohio Application July 19, 1938, Serial No. 220,016

1 Claim.

The foregoing and other purposes or objects of the invention are attained in the ratchet wrench illustrated in the accompanying drawing and described below.

Of the accompanying drawing:

Figure 1 is a plan view of the head end of a ratchet wrench device embodying the invention for use with a socket type wrench.

Figure 2 is a section on line 2--2 of Figure 1.

Figure is an inverted plan view of the wrench device.

Figure 4 is an enlarged plan view of the wrench head with cover plate removed.

Figure 5 is a section on line 5 5 of Figure 4.

Referring to the drawing, the wrench device may have any suitable handle I on which is a wrench-engaging head II. Rotatably mounted in the head `II is the operative element of the ratcheting device which may, as shown, be designed for use with a socket wrench. It will be understood, however, that the wrench device may be formed lin any other suitable way with male or female engaging members. The male member ofthe particular socket wrench operating device shown is indicated at l2a and `may be square, as shown, or of other polygonal shape and may have a spring-pressed ball I2b therein of a known type for gripping the side of a socket of the wrench with which it is engaged. The rotatable wrench element I2 is formed with teeth I3, I3 about its periphery, which teeth are preferably triangular shaped, as shown, sothat a Alarge number of strong ratchet teeth may be pro vided in adjoining relation about the rotary ratchet member providing eiective ratcheting action when the wrench device is used in closely coniined spaces. Arranged to engage with teeth I3 are pawls I 4, It. which are arranged in slots I5, I in the wrench-engaging head, preferably directed at such angles diverging outwardly toward the ratchet member l2 that the ends of the pawls Irl, which are preferably squared with thev sides of the pawls, as indicated at I5, i6 will snugly nt in the triangular spaces between teeth I3 in the rotary member l2, the slots or grooves I5 being open at the ends thereof adjacent the rotary ratcheting element I2, permitting move- (C1. 1oz-43.2) l,

ment of the pawls I4 through said ends into engagement with the teeth I3 of the rotary member as shown in Figure 4. The rear ends of the pawl members M, as shown at I'I, I'I, may be engaged with compression spring I8, I8 set in the grooves or slots I5 (see Figure 5). The Springs i8 serve normally to urge the pawls I4,v into engagement with the teeth I3 of the rotary ratchet member I2.

As shown in Figure 4, the pawls are so set that `the ratcheting action is in the direction of the arrow. Means are provided for holding one pawl Ill or the other out of engagement with ratchet wheel or rotary ratchet member I2 in the manner shown whereby a reversible ratcheting action can be secured. For this purpose the pawls I4 are formed with shoulders at I9, I9 with which engages a cam 2li formed or secured on shaft 2l journalled in the head II and to which is secured an operating handle 22 at the back of the wrench operating device. One end of cam 253 is designed to engage with one shoulder I9 of one pawl It and the other end of cam 20 is designed to engage with the corresponding shoulder E9 of the other pawl I4, as clearly appears in Figure 4. When the handle 22 is set to one side of the center of the device, as shown in Figures 3 and 4, one pawl It, as shown, is held out of engagement with the ratchet wheel, the other being permitted to engage. The handle 22 is designed to be swung to an opposite angular position away from the center line of the device at which it will be obvious that the cam 20 is designed to depress the other pawl I4 and to permit the rst pawl M to move into engagement with the ratchet member I2, thereby reversing. the ratcheting action.

Arranged centrally of the device is suitable means for holding the handle 22 in an intermediate position in which both pawls I4 are permitted to contact with the ratch teeth I3. To this end the device is provided at 23 with aspringpressed ball centrally arranged to engage the under side of lever 22 to hold the lever 22 in a central position in which the ratchet mechanism will be locked so that the wrench-engaging element l 2 will in effect be in fixed relation with the head permitting use of the wrench in the usual manner of a non-ratcheting wrench.

The pawls I4 and associated parts may be retained in slots I5 by acover-plate Iia secured on the head as shown. The construction provides a reversible ratcheting wrench adapted for eiective use under modern conditionsl and where the wrench is frequently used in small and conning places where the ratcheting action is necessarily limited in amplitude. The construction permits the use of a large number of comparatively small but strong teeth which give eiective ratcheting action without slippage or breakage. Also the wrench may be effectively locked for use as a non-ratcheting wrench in the usual way. The provision of the outwardly diverging pawls I4 to cooperate with the triangular teeth I3 makes possible the use of a relatively large ratchet wheel with closely spaced strong triangular teeth.

Modications of the invention may be resorted to without departing from the spirit thereof or the scope of the appended claim. It will be understood the invention may be embodied in a Wrench-operating device or handle, as shown, or directly in a Wrench structure,

What is claimed is:

A Wrench of the character described comprising a Wrench-operating head housing therein a rotatable ratchet wheel, said wheel being provided with a plurality of closely spaced triangular teeth, said head having therein slots extending toward said wheel in outwardly diverging direction, the inner ends of said slots being closed and the outer ends thereof opening into the housing for said wheel, pawls slidably fitted into said slots whereby the outer ends thereof may move through the open ends of said slots into engagement with said ratchet Wheel, the ends of said pawls being squared to provide triangular portions projecting into said housing to engage the teeth of said ratchet Wheel, said slots and said pawls being of polygonal or non-circular crosssection whereby the pawls slide without rotation in said slots, yielding means between the closed ends of said slots and said pawls for normally urging said pawls into engagement with said ratchet Wheel and means for controlling engagement of said pawls with said ratchet wheel, said controlling means comprising a single cam rotatably mounted on said head in a position between said slots intermediate the ends thereof and having portions overlying said pawls above said slots, said pawls having shoulders thereon arranged to be engaged by the overlying portions of said cam whereby either paWl may be urged and locked out of engagement with said ratchet wheel or both may be released by the cam for simultaneous engagement of the ratchet wheel, the outer Walls of said slots supporting the pawls throughout their entire lengths when subjected to pressure of the ratchet Wheel on the projecting triangular portions of the pawls.

ARTHUR P. STONE.

US220016A 1938-07-19 1938-07-19 Ratchet wrench Expired - Lifetime US2201705A (en)

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Applications Claiming Priority (1)

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US220016A US2201705A (en) 1938-07-19 1938-07-19 Ratchet wrench

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US2201705A true US2201705A (en) 1940-05-21

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430480A (en) * 1944-02-26 1947-11-11 Honore C Hubbard Ratchet wrench
US2463220A (en) * 1944-09-19 1949-03-01 William E Van Hoose Ratchet wrench
WO1984000199A1 (en) * 1982-06-28 1984-01-19 Peter Norton Coupling for drive shaft and servo-motor driven shaft
US5404773A (en) * 1992-08-10 1995-04-11 Norville; Burl O. Cam-action ratchet-type wrench
US20020023520A1 (en) * 2000-02-03 2002-02-28 Bobby Hu Biasing arrangement for a pawl of a reversible ratchet-type wrench
US20020026858A1 (en) * 2000-09-01 2002-03-07 Bobby Hu Switching arrangement for a reversible ratchet type wrench
US6520051B1 (en) 2001-12-27 2003-02-18 Bobby Hu Head of a wrench handle
US6539825B1 (en) 2001-09-20 2003-04-01 Yen-Wen Lin Single direction ratcheting wrench with stuck prevention and ratcheting direction indication
US6644148B2 (en) 2002-02-08 2003-11-11 Bobby Hu Reversible ratchet-type wrench
US6647832B2 (en) 2001-07-27 2003-11-18 Bobby Hu Wrench having two rigid supporting areas for a pawl
US6666117B2 (en) 2001-07-13 2003-12-23 Bobby Hu Wrench with a fixed maximum operational torque
US20040016322A1 (en) * 2000-01-11 2004-01-29 Bobby Hu Reversible ratcheting tool with a smaller head and improved driving torque
US20040055422A1 (en) * 2002-08-05 2004-03-25 Yen-Wen Lin Easy-to-assemble ratcheting tool
US20040093995A1 (en) * 2002-07-22 2004-05-20 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US6758641B2 (en) 2001-07-13 2004-07-06 Bobby Hu Method for manufacturing a ratchet type ring spanner having a larger cavity for receiving a larger pawl
EP1445068A2 (en) * 2003-02-07 2004-08-11 Hand Tool Design Corporation Ratcheting tool driver
US6807882B2 (en) 2001-05-07 2004-10-26 Bobby Hu Wrench with a simplified structure
US20040237727A1 (en) * 2003-05-29 2004-12-02 Hsiu-Ching Huang Robust wrench
US20040261584A1 (en) * 2003-06-27 2004-12-30 Hsiu-Ching Huang Anti-gridlock wrench
US6945141B2 (en) 2002-04-22 2005-09-20 Bobby Hu Reversible ratchet type wrench
US6955104B2 (en) 2000-03-13 2005-10-18 Bobby Hu Reversible ratcheting tool with a smaller head
US7017453B2 (en) 2001-10-17 2006-03-28 Bobby Hu Reversible ratchet-type wrench
EP2329919A1 (en) * 2010-06-10 2011-06-08 New Way Tools Co., Ltd. Ratchet wrench
US20110162489A1 (en) * 2010-01-05 2011-07-07 Ping-Wen Huang Ratchet Wrench
US20110296959A1 (en) * 2010-06-03 2011-12-08 Kibby Ivan Enhanced ratchet
USRE43286E1 (en) 1999-08-03 2012-04-03 Bobby Hu Ratchet wheel with asymmetric arcuate concave teeth or non-arcuate concave teeth ratcheting tools with such ratchet wheel and combination of such ratchet wheel and a pawl

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430480A (en) * 1944-02-26 1947-11-11 Honore C Hubbard Ratchet wrench
US2463220A (en) * 1944-09-19 1949-03-01 William E Van Hoose Ratchet wrench
WO1984000199A1 (en) * 1982-06-28 1984-01-19 Peter Norton Coupling for drive shaft and servo-motor driven shaft
US4458795A (en) * 1982-06-28 1984-07-10 Peter Norton Coupling for drive shaft and servo-motor driven shaft
US5404773A (en) * 1992-08-10 1995-04-11 Norville; Burl O. Cam-action ratchet-type wrench
USRE43286E1 (en) 1999-08-03 2012-04-03 Bobby Hu Ratchet wheel with asymmetric arcuate concave teeth or non-arcuate concave teeth ratcheting tools with such ratchet wheel and combination of such ratchet wheel and a pawl
US7234372B2 (en) 2000-01-11 2007-06-26 Bobby Hu Reversible ratcheting tool with a smaller head and improved driving torque
US20040016322A1 (en) * 2000-01-11 2004-01-29 Bobby Hu Reversible ratcheting tool with a smaller head and improved driving torque
US20040055423A1 (en) * 2000-01-11 2004-03-25 Bobby Hu Reversible ratcheting tool with a smaller head and improved driving torque
US7237460B2 (en) 2000-02-03 2007-07-03 Bobby Hu Biasing arrangement for a pawl of a reversible ratchet-type wrench
US20020023520A1 (en) * 2000-02-03 2002-02-28 Bobby Hu Biasing arrangement for a pawl of a reversible ratchet-type wrench
US20040139823A1 (en) * 2000-02-03 2004-07-22 Bobby Hu Biasing arrangement for a pawl of a reversible ratchet-type wrench
US6955104B2 (en) 2000-03-13 2005-10-18 Bobby Hu Reversible ratcheting tool with a smaller head
US6666112B2 (en) * 2000-09-01 2003-12-23 Bobby Hu Switching arrangement for a reversible ratchet type wrench
US20020026858A1 (en) * 2000-09-01 2002-03-07 Bobby Hu Switching arrangement for a reversible ratchet type wrench
US6807882B2 (en) 2001-05-07 2004-10-26 Bobby Hu Wrench with a simplified structure
US6758641B2 (en) 2001-07-13 2004-07-06 Bobby Hu Method for manufacturing a ratchet type ring spanner having a larger cavity for receiving a larger pawl
US6666117B2 (en) 2001-07-13 2003-12-23 Bobby Hu Wrench with a fixed maximum operational torque
US6647832B2 (en) 2001-07-27 2003-11-18 Bobby Hu Wrench having two rigid supporting areas for a pawl
US6539825B1 (en) 2001-09-20 2003-04-01 Yen-Wen Lin Single direction ratcheting wrench with stuck prevention and ratcheting direction indication
US7017453B2 (en) 2001-10-17 2006-03-28 Bobby Hu Reversible ratchet-type wrench
US6520051B1 (en) 2001-12-27 2003-02-18 Bobby Hu Head of a wrench handle
US6644148B2 (en) 2002-02-08 2003-11-11 Bobby Hu Reversible ratchet-type wrench
US6945141B2 (en) 2002-04-22 2005-09-20 Bobby Hu Reversible ratchet type wrench
US7032478B2 (en) 2002-07-22 2006-04-25 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US20050229751A1 (en) * 2002-07-22 2005-10-20 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US6971286B2 (en) 2002-07-22 2005-12-06 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US20040093995A1 (en) * 2002-07-22 2004-05-20 Bobby Hu Ratcheting wrench with quick tightening/loosening functions and fine adjusting functions
US20040055422A1 (en) * 2002-08-05 2004-03-25 Yen-Wen Lin Easy-to-assemble ratcheting tool
US7178429B2 (en) 2002-08-05 2007-02-20 Yen-Wen Lin Easy-to-assemble ratcheting tool
EP1445068A3 (en) * 2003-02-07 2006-12-06 Hand Tool Design Corporation Ratcheting tool driver
EP1445068A2 (en) * 2003-02-07 2004-08-11 Hand Tool Design Corporation Ratcheting tool driver
USRE42768E1 (en) * 2003-05-29 2011-10-04 Infar Industrial Co., Ltd. Robust wrench
US20040237727A1 (en) * 2003-05-29 2004-12-02 Hsiu-Ching Huang Robust wrench
US7082859B2 (en) * 2003-05-29 2006-08-01 Hsiu-Ching Huang Robust wrench
US20040261584A1 (en) * 2003-06-27 2004-12-30 Hsiu-Ching Huang Anti-gridlock wrench
US20110162489A1 (en) * 2010-01-05 2011-07-07 Ping-Wen Huang Ratchet Wrench
US8215207B2 (en) * 2010-01-05 2012-07-10 New Way Tools Co., Ltd. Ratchet wrench
US20110296959A1 (en) * 2010-06-03 2011-12-08 Kibby Ivan Enhanced ratchet
US8893589B2 (en) * 2010-06-03 2014-11-25 Ivan KIBBY Enhanced ratchet
EP2329919A1 (en) * 2010-06-10 2011-06-08 New Way Tools Co., Ltd. Ratchet wrench

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