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Publication numberUS2719042 A
Publication typeGrant
Publication dateSep 27, 1955
Filing dateJul 15, 1953
Priority dateJul 15, 1953
Publication numberUS 2719042 A, US 2719042A, US-A-2719042, US2719042 A, US2719042A
InventorsRobert Espy James
Original AssigneeRobert Espy James
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2719042 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Sept. 27, 1955 Filed July 15 1953 F/a Z M g 0 m a M 3 m 6 F m a W x m M m Q United States Patent Ofiice 2,719,042 Patented Sept. 27, 1955 TOOLHOLDER James Robert Espy, Minneapolis, Minn.

Application July 15, 1953, Serial No. 368,040

1 Claim. (Cl. 279-9) This invention relates to a toolholder; more specifically to an extension handle and holder for L-shapecl bar wrenches.

The Allen type set-screw is widely employed in assembling mechanical devices. The screw has a hexagonally shaped recess in the head in place of the conventional slot, and an L-shaped bar of corresponding hexagonal cross-section is customarily provided with each box of such screws to serve as a wrench for tightening and loosening the screws. The various sizes of screws require wrenches of corresponding sizes. The wrenches are difficult to use because their small size limits the amount of leverage which may be applied, and the screws frequently must be placed in difiicultly accessible locations which cannot be reached with the wrench when held in the hand or in an improvised holder.

The present invention provides a holder for these L- shaped hexagonal-bar or similar wrenches, which overcomes the difiiculties and disadvantages hitherto encountered in their use. Wrenches of several different sizes may be employed, the change from one to another being easily and rapidly accomplished. The wrench is firmly held in the holder with a positive grip and without play or lost motion. The operating tip of the wrench is axially aligned with the stem of the holder, which may be of any desired length, so that fitting the wrench into the socket of a screw is not difiicult even though the screw may be in a difiicultly accessible location. The handle member of the holder affords ample grip and leverage for imparting any desired degree of torque. The holder is simply and economically constructed with a minimum of parts.

In the drawing, Figure l is a front elevation, and Figure 2 a side elevation partly in section, of a tool-holder made in accordance with the principles of this invention and with an L-shaped Allen bar wrench in place therein. Figures 3 and 4 illustrate modified handle members, Figure 5 a modified socket member, and Figure 6 a modified plug member which may be substituted for corresponding members of the device of Figures 1 and 2.

The tool holder comprises a handle member 10 and a plug member 11. The handle member consists of a stem 12 of any desired length, having at one end a cross-bar or equivalent handle portion 13 and terminating at the other end in an open-ended internally threaded socket 14 slotted along one side, as indicated at 15, from the open end of the socket to substantially the full depth of the hollow interior. The plug member 11 is correspondingly externally threaded at one end and knurled at the other end, so that it may be screwed by hand into the internally threaded socket 14. The threaded portion preferably extends over at least about one-half the length of the plug and the knurled portion over somewhat less than that amount, as shown in the drawing. The plug has a longitudinal axial bore of a diameter just sufficient to permit the shank of an L-shaped Allen wrench 16 to fit therein, the bore being countersunk to provide a beveled or rounded edge at the inner or threaded end of the plug, forming a shoulder 17 having effiectively the same contour as the inner corner 18 of the wrench 16.

Various alternative structures, such as those listed herebelow, are capable of providing equally effective results and will be recognized as being fully equivalent to those thus far disclosed. The cross-bar 13 and stem 12 may be made as separate pieces, for example with the bar 13a slidably fitting through a hole in the thickened stem 12a, here shown as of angular rather than circular cross-section. The cross-bar form of handle may be replaced by a knurled or fluted terminal section 13b of the shank 12 having an increased diameter. The slot 15a is helically rather than paraxially disposed in the wall of the socket 14a. The continuously threaded surfaces of socket and plug may be paraxially channeled or otherwise modified so as to provide a quick-acting screw connection, is illustrated in connection with the plug 11a of Figure 6. The knurled section of the plug 11 is replaced in the plug 11a by a fluted section 19 which is of substantially greater external diameter than the threaded portion of the plug.

As will be apparent from the drawing, in placing an Allen wrench of the desired size in the toolholder, a plug member 11 of the proper diameter of bore is first selected. The plug is placed over the long shank of the wrench and this assembly is then advanced into the socket 14 of the handle member, the shorter shank of the wrench slidably advancing within the slot 15 as the plug is screwed into the socket. The wrench is thereby firmly held in place with the longer shank along the extended axis of the handle member 12.

The width of the slot 15 and the diameter of the bore of the plug 11 determines the maximum size of wrench which can be accommodated, but wrenches of any desired smaller size may also be used in the toolholder simply by selecting a plug of proper bore. In each case the wrench will be firmly held in place, with the shorter shank held in a positive grip between the shoulder 17 of the plug and the body of the socket 14 at the end of the channel 15 and with the adjacent portion of the longer shank fitting snugly within the axial bore of the plug 11.

Having now described my invention in terms of illustrative but non-limitative embodiments, what I claim is as follows:

A toolholder for an L-shaped bar wrench as herein described and consisting of a handle member and an associated plug member; the handle member having a shank portion, a handle portion at one end thereof, and an openended internally-threaded socket portion at the other end thereof, said socket portion having in the side thereof an open channel extending from the open end of the socket to substantially the full depth of the hollow interior, said channel being of a width suflicient to accommodate the largest wrench for which the toolholder is designed; said plug member being correspondingly externally threaded at one end and being externally roughened at the other end so that it may be screwed by hand into said socket member, and having a longitudinal axial bore of a diameter just sufiicient to receive the shank of an L-shaped bar Wrench, said bore being expanded at the end of said plug having the threaded exterior so as to form a shoulder having effectively the contour of the inner corner of the wrench at the juncture between the short and the long shank sections thereof.

References Cited in the file of this patent UNITED STATES PATENTS 1,901,168 Kalben Mar. 14, 1933 1,918,306 Williams July 18, 1933 2,110,202 Crane Mar. 8, 1938 2,346,364 Dowe Apr. 11, 1944 2,409,613 Brooks Oct. 22, 1946 2,465,619 Veit Mar. 29, 1949 2,475,268 Wittle July 5, 1949 2,569,069 Motel Sept. 25, 1951

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1901168 *Dec 16, 1930Mar 14, 1933Max KalbenSectional rod coupling
US1918306 *Jan 28, 1931Jul 18, 1933Williams Samuel FRod coupling
US2110202 *Jan 26, 1937Mar 8, 1938Crane Hubert RRod coupling
US2346364 *May 7, 1943Apr 11, 1944Dowe Leo HTool handle
US2409613 *Jan 15, 1945Oct 22, 1946Brooks Walter CWrench holder
US2465619 *Apr 16, 1946Mar 29, 1949Robert C VeitWrench kit
US2475268 *Jun 11, 1946Jul 5, 1949Wittle Clarence RToolholder
US2569069 *Jul 26, 1949Sep 25, 1951Frank J LawlerToolholder
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2851915 *Apr 6, 1955Sep 16, 1958Martinez Thomas LAuxiliary handle for angular wrenches
US3113479 *Dec 15, 1961Dec 10, 1963Swingle George ET-handle for tools
US3598002 *Jan 8, 1970Aug 10, 1971Us ArmyWrench set
US3850056 *Jan 18, 1974Nov 26, 1974Allen GDriver tool
US4155162 *Sep 19, 1977May 22, 1979Ipco Hospital Supply CorporationDental anchor magazine
US4252036 *Feb 16, 1979Feb 24, 1981Vanderhoof Richard CWrench for 4-wheel drive
US6345557 *Jul 6, 2000Feb 12, 2002Teng-Tang KuoAdjunct to a speed spanner
US6378402 *Aug 1, 2000Apr 30, 2002Black & Decker Inc.Hand tool
US6382057 *Dec 22, 1998May 7, 2002Charles F. KienholzRight angle wrench socket wrench adaptor
US6763744Oct 16, 2002Jul 20, 2004Allen-Pal LlcTool handle for holding multiple tools of different sizes during use
US6941843Apr 16, 2004Sep 13, 2005Allen-Pal LlcTool handle for holding multiple tools of different sizes during use
US7281454Mar 29, 2005Oct 16, 2007Allen-Pal LlcTool handle for holding multiple tools of different sizes during use
US7485132 *Oct 6, 2000Feb 3, 2009Abbott Spine Inc.Transverse connector with cam activated engagers
US7788996Sep 4, 2007Sep 7, 2010Allen-Pal LlcTool handle for holding multiple tools of different sizes during use
US7946203Jan 17, 2008May 24, 2011Wagic, Inc.Tool handle for holding multiple tools of different sizes during use
US8011277May 10, 2007Sep 6, 2011Wagic, Inc.Hand tool with multiple bit storage and a method for using the same
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US8062338Feb 2, 2009Nov 22, 2011Zimmer Spine, Inc.Transverse connector with cam activated engagers
US8336428Sep 8, 2011Dec 25, 2012Wagic, Inc.Universal ratcheting tool
US8359954Sep 25, 2009Jan 29, 2013Wagic, Inc.Radial foldout tool with multiple types of tools and bit storage
US8468916Sep 25, 2009Jun 25, 2013Wagic, Inc.Biaxial foldout tool with multiple tools on a side and a rotational stop
US8499667Jan 17, 2008Aug 6, 2013WAGIC, IncTool holder
US8621963Oct 5, 2009Jan 7, 2014Wagic, Inc.Dual purpose flip-out and T handle
US8640574Dec 20, 2012Feb 4, 2014Wagic, Inc.Radial foldout tool with multiple types of tools and bit storage
US8757033Nov 26, 2012Jun 24, 2014Wagic, Inc.Universal ratcheting tool
US8925429Jan 17, 2008Jan 6, 2015Wagic, Inc.Radial foldout tool
WO2001064401A1 *Feb 28, 2001Sep 7, 2001Black & Decker IncHand tool
U.S. Classification81/177.2, 81/177.5, 81/436
International ClassificationB25G1/00
Cooperative ClassificationB25G1/005
European ClassificationB25G1/00S