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Publication numberUS2694953 A
Publication typeGrant
Publication dateNov 23, 1954
Filing dateOct 13, 1953
Priority dateOct 13, 1953
Publication numberUS 2694953 A, US 2694953A, US-A-2694953, US2694953 A, US2694953A
InventorsWilliams Duane B
Original AssigneeWilliams Duane B
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Gear-operated wrench structure
US 2694953 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Nov. 23, 1954 D. a. WiLLmMs Zgdm GEAR-OPERATED WRENCH STRUCTURE4 I Filed OCT.. 13. 1953 I4 l y INVENTOR. i "www a j United States Patent Office ,staat Patented Nov.. 23, 11.954

GEAR-OPERATED WRENCH STRUCTURE Duane B. Williams, Boise, Idaho Application October 13, 1953, Serial No. 385,761 1 Claim. (Cl. 81-57) This invention relates to an improved gear operated wrench structure and the primary object of the invention is to provide a more compact, efficient, and more versatile structure of this kind, which is more capable 4of reaching into and being operated in conned and otherwise hard to reach places, and which is designed to be operated like a reducing gear or a step up gear by merely re'- versing the connections to the structure of the driving v and working elements.

Other important objects and advantageous features of the invention will be apparent from the following description and the accompanying drawings, wherein, for purposes of illustration, rather than limitation, a specific form of the invention is set forth in detail.

In the drawings:

Figure l is a central longitudinal section;

Figure 2 is a top plan view of Figure 1;

Figure 3 isa horizontal section taken on the line 3--3 of Figure 1;

Figure 4 is a transverse vertical section taken on the line 4 4 of Figure 1;

Figure 5 is a transverse vertical section taken on the line 5--5 of Figure 1;

Figure 6 is a horizontal section taken on the line 6-6 of Figure 1;

Figure 7 is an end elevation of the removable socket at the left hand side of Figure 1, the driver being removed;

Figure 8 is a longitudinal section taken on the line 8-8 of Figure 7; and

Figure 9 is a view similar to Figure l showing the structure in reversed position and serving as a reducing gear for applying greater power to the working element.

Referring in detail to the drawings, wherein like numerals designate like parts throughout the several views, and first to Figures l to 8, the illustrated device comprises a gear case having a squared end 12 and a semi-circular end 13, and a semi-circular preferably integral right angular flat arm 14 on the squaredend 12. A removable cover 15 of substantially the same horizontal cross section as the base arm 11 and having section and a curved longitudinal cross section, has its lower end 16 engaged around the semi-circular end and the sides of the base arm 11 and removably secured thereto by means of screws 17, and the upper edge 18 is secured to the upper end 19 of the base arm 14 by means of screws 20.

A journal hole 21 is provided centrally in the base arm 11 and a bearing annulus 22 surrounds the hole 21 at the inner side of the arm 11. A bevelled gear 23 has an outer side 24 bearing upon the annulus 22 and a stub shaft or shank 25 journaled in the hole 21 having an outer end 26 Hush with the outer side of the base arm 11. The stub shaft 25 is provided with a square socket 27 provided in one side thereof with a hemispherical detent receiving depression 28.

A wrench head 29 has a square hole 30 in its 'inner end provided with a hemispherical detent receiving depression 31, and a larger diameter hexagonal nut receiving involving an L-shaped base 11 a a semi-circular transverse cross s socket 32 in its outer end. A double ended elongated square connecting lug 32 has end portions at opposlte sides of a fixed collar 33' removably engaging in the hole 30 in the wrench head 29 and in the stub shaft socket 27 and is provided with spring pressed ball detents 34 md 35 engaging the depressions 31 and 28, respective y.

The right angular base arm 14 has a journal hole 36 therein, extending at right angles to the journal hole 21 in the arm 11, and a bearing annulus 37 surrounds the hole 36 at the inward side of the arm 14. A bevelled pinion 38, smaller in diameter than the bevelled gear 23 is in mesh with the gear 23 and bears against the annulus 37. The pinion 38 has a shank or stub shaft 39 journaled in the hole 36 and has an outer end 40 ush with the outer' side of the base arm 14. The stub shaft 39 has therein a square socket 41 provided in a wall thereof with a detent receiving depression 42.

A driver 43 includes a shaft 44, a fixed collar 45 and a square connecting lug 46 which is removably engaged in the pinion socket 41 and has a spring pressed ball detent 47 engaged in the depression 42, the collar 45 being abutted against the outer end 40 of the stub shaft 39.

With the foregoing arrangement of the parts, rotation of the driver 43 produces rotation of the wrench head 29 with relatively great power but at a slower speed than the rotation of the driver 43.

Referring to Figure 9 of the drawings, when it is desired to drive the wrench head at a higher speed than the rotation of the driver 43, the double ended connecting lug 33 is removed from the gear socket and the driver lug is removed from the pinion socket, the connecting lug 33 engaged in the pinion socket, and the driver lug engaged in the gear socket, the exchange being effected with ease and speed and without any other operations with or adjustments of the parts.

What is claimed is:

In a wrench, a gear case comprising an L-shaped base having a rst arm and a second arm positioned at right angles to each other, said arms having journal holes therethrough and outer and inner sides, a bearing annulus on the inner side of each arm and surrounding the journal holes thereof, a beveled pinion having a reduced stub shaft iournaled in the journal hole of the first arm with the pinion bearing against the bearing annulus of the first arm, a beveled gear having a reduced stub shaft journaled in the journal hole of the second arm with the beveled gear bearing against the bearing annulus of the second arm, the stub shafts having free terminal ends substantially ush with the outer sides of the arms and having polygonal sockets opening through the terminal ends, the pinion and the gear being in mesh with each other and held in place solely by their meshing engagement with each other and their engagement with the related bearing annulus and the engagement of their stub shafts in the sockets, said stub shafts having annular shoulders intermediate their ends rotatably bearing against the outer sides of the first and second base arms.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 542,317 Shea July 9, 1895 1,199,823 Sadtler Oct. 3, 1916 1,420,635 Klopper June 27, 1922 1,659,838 Schoeb Feb. 21, 1928 1,875,529 Vandervoort Sept. 6, 1932 2,620,840 Schafer Dec. 9, 1952 FOREIGN PATENTS Number Country Date 840,340 France Ian. 16, 1939

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US542317 *May 14, 1895Jul 9, 1895 Wrench
US1199823 *Jan 26, 1916Oct 3, 1916Morgan D SadtlerWrench.
US1420635 *Jun 21, 1921Jun 27, 1922Charles Klopper AugustWrench
US1659838 *Dec 1, 1925Feb 21, 1928Schoeb Albert WAdjustable universal wrench for automobiles, tractors, and the like
US1875529 *Jun 15, 1931Sep 6, 1932 vandervoort
US2620840 *Dec 24, 1948Dec 9, 1952Schafer Albert JRight angle drilling fixture
FR840340A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4455896 *Dec 28, 1981Jun 26, 1984Freddy HolmesWrench structure
US4712983 *Nov 8, 1985Dec 15, 1987Moynihan Patrick BAir compressor accessory driven by portable electric drill
US4913007 *Oct 6, 1989Apr 3, 1990Reynolds Randall WRight angle extension tool
US5505562 *Feb 9, 1995Apr 9, 1996Jennmar CorporationMechanical truss wrench
US5887494 *Aug 11, 1997Mar 30, 1999Trw Inc.Multi-gear attachment tool for a steering wheel assembly
US6009776 *Aug 25, 1998Jan 4, 2000Warren; Kenneth R.Right angle ratchet wrench drive unit
U.S. Classification81/57.29
International ClassificationB25B21/00
Cooperative ClassificationB25B21/002
European ClassificationB25B21/00C