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Publication numberUS1003997 A
Publication typeGrant
Publication dateSep 26, 1911
Filing dateApr 4, 1911
Priority dateApr 4, 1911
Publication numberUS 1003997 A, US 1003997A, US-A-1003997, US1003997 A, US1003997A
InventorsAlbert Dudly Sr
Original AssigneeAlbert Dudly Sr
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1003997 A
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Description  (OCR text may contain errors)



1,003,997.- Patented sept` 26,1911.



Specification of Letters Patent.

Application filed April 4, 1911.

Patented Sept. 26, 1911.

Serial No. 618,924.

.To all whom 'it may concern:

Be it known that I, ALBERT DUDLY, Sr., a citizen of the United States, and resident of Menominee,'in the county'of Menominee and State of Michigan, have invented certain new and useful Improvements in Wrenches;

i and I do hereby declare that the following is a full, clear, and exactdescription thereof.

My invention consists in what is herein particularly set forth with reference to the accompanying drawings and pointed out in the claim of this specification, its object being to provide simple, economical, light, strong and durable laterally folding tools of the wrench type especially designed for the use of operators of motor vehicles, the weight and compactness of the folded tools being such that they may be readily carried, singly or in sets, in a pocket of a. garment, and when extended eachhas the strength and durability of a single bar wrench, although it is made up of a pair of members in pivotal and sliding connection, the outer end of each member being provided with a nut or bolt-head recess of different size from that of the other.

Figure 1 of the drawings represents a side view of one of my laterally folding wrench-type tools extended; Fig. 2, a sectional view of the extended tool on the plane indicated by line 2 2 in Fig. l, and Fig. 3, a side View of said tool having the members thereof folded.

Referring by numerals to the drawings, 4 indicates one and 5 the other of a pair of members that go to make up a laterally folding wrench in accordance with my invention. The outer free end of each of the wrench members is provided with a gripping recess for a nut or bolt-head of predetermined size, the recess in the member 4 being of a size different from that of the recess in member 5, and the recesses herein shown are designed for the engagement of corresponding sizes of hexagon nuts or boltheads, that in said member 4 being larger than the one in said member 5.

The wrench-member 4 is provided with a headed pivot-stud 6 that engages a straight central slot 7 in the wrench member 5 longitudinally of the same. A headed stud 8 of the .wrench member 5 engages a partly straight and partly semi-circular slot 9 in the wrench member 4 also longitudinally of the same, the semi-circular portion of the compound slot being concentric with the stud 6 when at one extreme end of the slot 7.

The wrench being folded, its members are parallel, and if their outer end recesses be uppermost, the studs 6 and 8 are at the lowermost extremities of the slots With which they engage, as shown in Fig. 3, whereby said wrench is longitudinally contracted. The folded wrench may be utilized upon a nut or bolthead that corresponds with its end recess of least size, but with less leverage than when the tool is extended to provide for the employment of the same on nuts or boltheads of different sizes.

To extend the wrench, the member' 5 thereof is swung laterally on the pivot 6 extending from the member 4, whereby the stud 8 extending from said member 5 is caused to move in the semi-circular portion of the slot 9 in said member 4 until both studs are alined longitudinally of the tool, then by a sliding movement of either or both wrench members, said stud 8 of one is caught full up in the straight portion of said slot 9 of the other, there being corresponding movement of said stud 6 in the slot 7 of said wrench member 5 with which it engages. The wrench is now straightened out so that either end of the same may be utilized and its members are firmly interlocked. To fold the wrench, operations reverse to those aforesaid are performed.

It is intended to provide the wrenches in sets, each designed for two sizes of nuts or boltheads, and a convenient holder may be provided for each set. A set of four Wrenches can be made to serve for eight different predetermined sizes of nuts or boltheads, say from up to 25/32 of an inch, and when folded they occupy but little space and are light enough to be carried about in a garment pocket of the person requiring the same.

I claim:

A wrench comprising a pair of members one of which is provided with a compound straight and semi-circular slot and the other with a straight slot, and e headed stud eX- have hereunto set my hand at Menominee tending from each member in engagementin the county of Menominee and State of with the slot of the companion member, each member being provided at its free outei1 end With a gripping recess that differs in size from the one in the other member.

In testimony that I claim the foregoing I ALBERT DUDLY, SR. Vitnesses A. W. BLOM, GEO. W. I-IAGGERSON.

Michigan in the presence of two Witnesses. 10

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C.l


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5456278 *May 2, 1994Oct 10, 1995Morris; Jeffrey B.Utility shutoff key
US5983759 *Apr 13, 1998Nov 16, 1999Turner; Paul E.Folding wrench cluster
US7204176 *Jul 8, 2005Apr 17, 2007Yu Feng Industrial Co., Ltd.Wrench with two pivotable sections
US7316172 *Nov 27, 2006Jan 8, 2008Chen, Sue FenHandheld tool
US7472630 *May 21, 2007Jan 6, 2009Richard VelluzziHand tool with extensible handle
CN100540234CNov 7, 2006Sep 16, 2009陈素芬Handhold type tool
U.S. Classification81/125.1, 7/138, 81/177.6
Cooperative ClassificationB25B13/08