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Publication numberUS1452753 A
Publication typeGrant
Publication dateApr 24, 1923
Filing dateMar 9, 1922
Priority dateMar 9, 1922
Publication numberUS 1452753 A, US 1452753A, US-A-1452753, US1452753 A, US1452753A
InventorsOtto William H, William Ulrich
Original AssigneeOtto William H, William Ulrich
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Clamp
US 1452753 A
Images(1)
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Description  (OCR text may contain errors)

W. H. OTTO ET AL I CLAMP- Original Filed March 9, 1922 gviiwiwa 6 Wm: 121 I 173916 Q 14- u if Q18 MDQ) To all whom it may concern.

ities.

Patented 24, 19 23.

lathe CLAMP."

. Application filed March 9,;1922, Serial No. siaaaaa ne ea rem-nar 24, 1923.

Be it known that we, WILLIAM Hf OTTO and WILLIAM ULRICH, citizens ofthe United States, residing at Cincinnati, in the county of Hamilton and State ofChio, have invented certaininew and useful Improvements in Clamps, ofwhich the following is a specification. I

This invention'relates to improvements in clamps of thequick-action typeand hasfor one'of its particular objects to provide means whereby the movable aw can be shifted from one position to another on the shank,

and be retained inythe adjusted positions while the clamp is not engaged with the work; also to provide a clamp which will automatically lock when the jaws are bound to the work, one that is simple in construction, and efficient as to the clamping qual- These and other. objects hereinafter set forth are attained by the means illustrated in the accompanying drawing in which Fig. 1 is a perspective view of the improved clamp. o

Fig. 2, is a side elevation of the clamp showing part of the shank and the movable jaw in section and in an unlocked position, and I Fig. 3 is a sectional view showing the movable jaw in a locked position.

Similar reference numerals in all of the figures of the drawing designate like parts.

To enable other skilled in the art to make and use this improvement, we will proceed to describe the construction and operation of the same, with reference to the accompanying drawing, in which 6 designates the shank provided at one end with a jaw 7 that is preferably formed integrally therewith, and said shank on its front edge is formed with a groove 8 which extends the entire length of the shank, and in the bottom of said groove is formed a series of depressibns 9 for the purpose hereinafter described.

Constructed to slide on theshank is a mov- I able jaw 10, the same beingprovided at its free end with a clamping screw 11 which is provided with a swivel-toe at its lower end, and a head 12v at its upper end which is provided with a handle 13 for turning the clamping screw.

I Movable jaw 10 is preferably formed with a through slot 14 which is formed to permit .the shank to move freely therethrough and large enough to allow tilting of the movable jaw when the work is clamped, and formed 1 in the body-portion of the movable jaw and opening into the slot l is a cavity 15 in which are positionedthelock-balls 16, said cavity being formed with an extension l'i for a spring 18=that isengaged between the end of the cavity extension 17 and theadjacent ball. The cavity extension 17 is formed smaller in diameter than the, ball cavity to form a shoulder 19 to limit themovement of-the balls-backwardly, and the spring con ,stantlyexerts pressure ln aidirection lto push I the balls forward so that when the clamp is I not -engagedwith the work, a clearance will be had between the shoulder 19 and tneb alls to permltthem to recede slightly when passing from one lock-depression 9 to another 1 in the shank.

Cavity l5 and its extension '17 are preferably formed through a hole 20 at the rear.

of the movable arm, and after the spring and balls are placed in the cavity, the hole 20 is closed with a screw 21. I The shank and groove 8 at itsupper end, areslightly .curved backwardly as shown at 2-2, to permit entrance of the exposed lockball when the movable jaw is being first inserted upon the shank, and the shank is also provided at its upper end with a removablestop-pin 23 which will prevent the movable jaw from running oifthe shank.

In operation, the work to be clamped is placed between the jaws and the movable jaw is initially slid close to the work or in a position where the front lock-ball will engage in the depression 9 closest to the work.

Then the clamping screw is operated to force against the rear-ball 16 and thus lock the balls against backward movement and preventing their disengagement from the lock depression and thus positively lock the movable jaw against movement longitudinally of the shank. When the work is unclamped the locking parts are released and the mov ablejaw can slide freely on the shank, the shoulder 19 then having receded sufiiciently to permit the balls to recede to a distance equal at least to the cavities 9, so that the balls can run along the groove 8 and snap,

into the cavities one after another.

Having thus fully described the invention, what is claimed is 1. A clamp comprising a shank having a i fixed jaw at one end, and a series of depressions formed in the edge of shank, a movable jaw mounted to slide on the shank, provided with a clamping screw at its outer end, and

formed With a cavity opening into the shank r.

, opening thereof, a lock-ball in said cavity,

ball in the depression.

a spring in said cavity for forcing said ball into engagement with the depression in the edge of the shank, said cavity being formed with a shoulder to engage the lock-ball when the movable jaw is tilted and thereby lock the A clamp comprising a shank having a fixed jaw at one end, said shank being grooved on one of its edges and provided with a series of depressions in the bottom or said groove, a movableja-w on the shank having a clamping screw. atits outer end and provided with a cavity opening into the shank opening thereof, locking balls in the cavity, a spring in the cavity for forcing one of the balls into engagement with one of the depressions in the bottom of the groove of the shank, said cavity being formed With a shoulder to engage the lock-balls when the movable j aW is tilted and thereby lock one of the balls in its depression.

3. A clamp comprising a shank having a fi-Xed jaw at one end, said shank being grooved on one of its edges and provided with a series of depressions in the bottom of said groove, a movable jaw on the shank having a clamping screw at its outer end, a cavity in said jaw, a locking means in the cavity, a

spring for forcing the locking means into one of said depressions, the Walls of the cavity forming a shoulder for engaging behind the locking means when the movable arm is tilted, the groove at the top end of the shank being curved backwardly to permit the entrance of said locking means.

In testimony whereof We aflix our signatures.

WILLIAM I-I. OTTO. WILLIAM ULRICH.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2675839 *Mar 26, 1952Apr 20, 1954Beasley Arthur MStraight beam adjustable jaw clamp
US3159394 *Feb 9, 1962Dec 1, 1964Burns Robert WPositioning and holding device
US3245676 *Jan 17, 1963Apr 12, 1966Mueller CoQuick acting plastic service t clamp
US3630512 *Sep 18, 1969Dec 28, 1971Paret PaulClamping device, particularly for a machine tool
US3914830 *Feb 8, 1974Oct 28, 1975Bolton Robert BenjaminTools having locking adjustments
US4381105 *May 8, 1980Apr 26, 1983Gordon W. HueschenClamp
US4946176 *Oct 14, 1988Aug 7, 1990Hillenburg Mark WChuck with movable jaw halves
US5692734 *Nov 25, 1994Dec 2, 1997American Tool Companies, Inc.Clamp structure
US6367787Mar 1, 2000Apr 9, 2002American Tool Companies, Inc.Hand clamp
US6412767Mar 6, 1998Jul 2, 2002American Tool Companies, Inc.Clamping jaw
US7159859Oct 3, 2003Jan 9, 2007Irwin Industrial Tool CompanyPipe clamp with releasable clamp body
US7699297Jul 25, 2002Apr 20, 2010Irwin Industrial Tool CompanyIncreased and variable force and multi-speed clamps
US7735813Nov 7, 2007Jun 15, 2010Irwin Industrial Tools GmbhClamping or spreading tool
US7815175Oct 30, 2007Oct 19, 2010Irwin Industrial Tool CompanyIncreased and variable force and multi-speed clamps
US8025279 *Jul 10, 2008Sep 27, 2011Seber Design Group, Inc.Ratcheting C-clamp
US8074340Mar 1, 2010Dec 13, 2011Irwin Industrial Tool CompanyIncreased and variable force and multi-speed clamps
US8240647May 5, 2010Aug 14, 2012Irwin Industrial Tools GmbhClamping or spreading tool
US8267389 *Feb 27, 2008Sep 18, 2012Bessey Tool Gmbh & Co. KgDevice for applying pressure to a workpiece
US8313095 *Aug 6, 2008Nov 20, 2012Bessey Tool Gmbh & Co. KgDevice for applying pressure to a workpiece and clamping tool
US8590871Dec 7, 2009Nov 26, 2013Irwin Industrial Tool CompanyClamping and or spreading tool
US8702076Sep 12, 2011Apr 22, 2014Irwin Industrial Tool Company, Inc.Increased and variable force and multi-speed clamps
US20080217830 *Feb 27, 2008Sep 11, 2008Bessey Tool Gmbh & Co. KgDevice for applying pressure to a workpiece
US20090026681 *Aug 6, 2008Jan 29, 2009Bessey Tool Gmbh & Co. KgDevice for applying pressure to a workpiece and clamping tool
DE102006011280B4 *Mar 10, 2006Aug 18, 2011IRWIN Industrial Tools GmbH, 85399Spann- und/oder Spreizwerkzeug, insbesondere Schraubzwinge, mit einer Wegrutschsperre
EP0894575A2 *May 7, 1998Feb 3, 1999Kleinbongartz & KaiserClamp
EP1584413A1 *Oct 7, 2004Oct 12, 2005Industrias Piqueras, S.A.Retaining device for movable heads of pressure jacks, clamping screws, carpenter's clamps or the like
EP1813390A2 *Oct 31, 2006Aug 1, 2007Irwin Industrial Tools GmbHClamping tool or spreader, expecially screw clamp
WO2005011920A1 *Jul 28, 2004Feb 10, 2005Geier ManfredVice
Classifications
U.S. Classification269/189, 269/166, 269/207
International ClassificationB25B5/00, B25B5/16, B25B5/10
Cooperative ClassificationB25B5/102, B25B5/166
European ClassificationB25B5/10C, B25B5/16D