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Publication numberUS3738768 A
Publication typeGrant
Publication dateJun 12, 1973
Filing dateFeb 9, 1971
Priority dateFeb 9, 1971
Publication numberUS 3738768 A, US 3738768A, US-A-3738768, US3738768 A, US3738768A
InventorsKuhn R
Original AssigneeKuhn R
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tap wrench with swivel drive
US 3738768 A
A drive tap wrench that is manually operable and which includes a removable cross-handle; the device being adaptable to be used as a conventional "T" tap wrench or which can be used with a 1/4 inch drive ratchet wrench.
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Description  (OCR text may contain errors)

United States Patent [1 1 Kuhn 1 1 TAP WRENCH WITH SWIVEL DRIVE [76] Inventor: Russell P. Kuhn, 109 Tesing Circle,

Bridgeport, Conn. 06606 [22] Filed: Feb. 9, 1971 [21] Appl. No.: 113,900

[52] U.S. Cl...... 408/240, 279/42, 145/61 2,

9 81/177 E,8l/177 ST [51] Int. Cl B251 13/10, 1325b 13/44 [58] Field of Search 408/238, 239, 240;

81/177 E, 177 G, 177 D, 177 ST, 177 U], 177.8, 177.9; 279/42; 145/65, 61 L [56] I References Cited UNITED STATES PATENTS 1,301,802 4/1919 Anderson 145/61 L in] 3,738,768 l'June 12, 1973 1,371,350 Campbell 81/177 E 1,506,331 8/1924 Benko 1,498,712 6/1924 York 192,423 6/1877 Elterich 408/240 FOREIGN PATENTS OR APPLICATIONS 257,869 3/1928 Italy ill/177.5 F

Primary Examiner-Francis S. Husar [57] ABSTRACT A drive tap wrench that is manually operable and which includes a removable cross-handle; the device being adaptable to be used as a conventional T tap wrench or which can be used with 3. /1 inch drive ratchet wrench.

1 Claim, 4 Drawing Figures PAIENIED JUN I 21915 //V MFA/roe @055544 P Kay/v TAP WRENCH WITH SWIVEL DRIVE This invention relates generally to wrenches. More specifically it relates to tap wrenches.

A principle object of the present invention is to pro vide a drive tap wrench that is manually operative, and which includes a removable cross-handle.

Another object is to provide a drive tap wrench which is adaptable to be used as a conventional T tap wrench.

Yet another object is to provide a drive tap wrench which can be used as a drive ratchet wrench of A, or k inch size.

Yet another object is to provide a drive tap wrench which can reach into confined areas that are not accessible to conventional wrenches.

Other objects are to provide a drive tap wrench which is simple in design, inexpensive to manufacture, rugged in construction, easy to use.and efficient in operation.

These and other objects will be readily evident upon a study of the following specification and the accompanying drawing wherein:

FIG. I is a perspective view of the invention.

FIG. 2 is a side view thereof shown partly in cross section.

FIG. 3' is a modified design of the invention wherein the tool is pivotable about a center thereof so that when pivoted to 90 the pivoted end forms a lever.

FIG. 4 is another modified design wherein the lever bar is in sections so to pivot out'of the way and clear any side obstructions.

Referring now to the drawing in detail, and more particularly at this time to FIGS. 1 and 2, the reference numeral represents a drive tap wrench according to the present invention wherein there is an elongated shank 11 which at one end 12 forms a component of a chuck 13 to hold a tap; the end being hollowed out to receive the tap end. The end 12 is transversely split with a slot 14 so that the tapered terminal 15 of the end 12 forms jaws 16. The outer side of the shank 11 is threaded as shown at 17 upon which a knurled nut 18 is engaged; the nut serving to compress the jaws l6 and bind against the tap for holding the same.

The opposite end of the shank includes an enlarged head 19 with a square socket opening 20 for removable securement with a socket wrench extension, not shown. A transverse extending removable handle 21 extends through a hole 22 in the head 19 to provide leverage to rotate the tool in a tapping operation.

Inoperative use, it is now evident that the tool is adaptable to be used as a conventional T tap or as a drive ratchet wrench of A, or 1% inch size.

In FIG. 3, a modified form of the invention is shown wherein the drivetap wrench 23 has an upper end thereof pivotable about a transverse pivot pin 24 so that the upper end when tilted 90 forms a leverage arm for rotating the tool during a tapping operation. In this form of the invention, the shank is divided into two components 25 and 26 which are attached pivotally free respective to each other by the pin 24.

In FIG. 4 another modified drive tap wrench 27 has a cross-handle 28 that is segmented into three parts 29, 30 and 31 which are enjoined by transverse pins 32 so that the handle may be retained selectively straight or angled as shown.

It is now evident that the forms of the invention illustrated in FIGS. 3 and 4 are adaptable for operating in close quarters wherein there is insufficient space for fully swinging a one piece cross arm.

While various changes may be made in the detail construction, it is to be understood that such changes will be within the spirit and scope of the present invention.

I claim:

1. ma drive tap wrench, the combination of a shank having a chuck at one end adapted to receive a tap and an opposite end having means for shank rotation wherein said chuck comprises a pair of similar symmetrical oppositely disposed spaced jaws, adapted to receive a tap therebetween, said jaws having an exteriorly threaded surface with an interiorly threaded sleeve mounted thereon, said jaws including tapered end portions extending integrally from an intermediate portion of diameter equal to the shank diameter, said spaced jaws being formed by a slot extending longitudinally along the shank axis coextensions with and through the intermediate'and end portions of the jaws terminating adjacent the termination of the threaded surface, said sleeve including an upper cylindrical segment threaded on the intermediate portion and of similar length including a lower tapered segment in surrounding abuttment with the tapered portions of said jaws, wherein said means for rotating said shank comprise an enlarged head with a terminal square socket for receiving a socket wrench extension, said head being pivotally secured to said shank by means of spaced bifurcations mounted on a tongue extending integrally from the shank, said bifurcations and tongue being axially coextensive, including a pivot pin mounted transversally through said tongue and bifurcations, wherein said bifurcations have outer cylindrical surfaces forming an aligned extension of the shank exterior.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US192423 *Jun 26, 1877 Chaelbs bltbeigh
US1301802 *Feb 1, 1918Apr 29, 1919John Edward AndersonTool-handle.
US1371350 *Oct 9, 1920Mar 15, 1921Sarah W CampbellWrench
US1498712 *Jun 9, 1921Jun 24, 1924Percy YorkUniversal-joint wrench
US1506331 *Jul 19, 1921Aug 26, 1924Benko IvanTool holder
IT257869A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4087195 *Mar 7, 1977May 2, 1978Wood James RTapping accessory
US4095917 *Oct 1, 1976Jun 20, 1978Wesner Arden LDie holder
US4385534 *Aug 27, 1980May 31, 1983Nichols Carl RAdjustable socket
US5052250 *Mar 11, 1988Oct 1, 1991Clarke Walter GStarter plug
US5056387 *Oct 15, 1990Oct 15, 1991Cook Chester LScrew-holding screwdriver
US5144979 *Feb 8, 1991Sep 8, 1992Nitto Kohki Co., Ltd.Tube coupler and a valve for a tube coupler
US5213347 *Apr 29, 1991May 25, 1993Lisle CorporationSocket driveable tap apparatus
US5626063 *Feb 8, 1996May 6, 1997Kosbab; Delbert D.Tool for unlocking a fifth wheel locking handle
US5855150 *Nov 6, 1996Jan 5, 1999Otero; ArmandoTubular tool for removing, installing and storing of auto lug nuts
US6634651 *Nov 7, 2001Oct 21, 2003Meccanica Arnes S.A.S. Di Tralli Domenico & C.Compensated tool holder for tapping spindles
US6698317 *Aug 24, 2000Mar 2, 2004Andrew J. MachovskyMulti-purpose plumbing tool
US7494304Aug 29, 2006Feb 24, 2009Robert Bosch GmbhTool holder with removable handle
US8434390 *Aug 26, 2009May 7, 2013Irwin Industrial Tool CompanyFlexible threading system
US20040206215 *Apr 21, 2003Oct 21, 2004Theodoros AthanasiouScrewdriver for high torque situations
US20040231468 *May 23, 2003Nov 25, 2004Mark OdachowskiHand or automatic driven tool for attaching screwed anchors
US20040255727 *Jun 23, 2003Dec 23, 2004Kovach James A.Tub drain wrench
US20050045000 *Aug 29, 2003Mar 3, 2005Joseph SessaHand operated articulating tools for a flush mounted fire hydrant
US20080056834 *Aug 29, 2006Mar 6, 2008Credo Technology CorporationTool holder with removable handle
US20080088098 *Apr 4, 2007Apr 17, 2008Tien Kuei HsuCombination of driving tool and chuck key
US20090038132 *Aug 8, 2007Feb 12, 2009Garry Wayne ZacharySuspension spring removal and installation tool
US20090272238 *Apr 30, 2008Nov 5, 2009David Harrisscrew driver
US20090289425 *May 20, 2009Nov 26, 2009Chia-Ho LinChuck engagement lock mechanism
US20090308209 *Aug 26, 2009Dec 17, 2009Irwin Industrial Tool CompanyFlexible threading system
U.S. Classification408/240, 81/177.5, 279/42, 81/177.6
International ClassificationB25B13/44, B25B13/00, B25G1/00
Cooperative ClassificationB25B13/44, B25G1/005
European ClassificationB25B13/44, B25G1/00S