US1186135A - Wrench. - Google Patents

Description

A. L. ROWE.

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APPLICATION FILED DEC 23, 191 5- 7 1 1 86, 1 35. Patented J 11110 6, 1916.

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WITNESSES ciwmifialb.

I. 9 g! I 1 ATTORNEY A. L. ROWE.

WRENCH.

APPLICATION FILED 050.23. 1915'.

1,1 86,1 35. Patented June 6, 1916.

2 SHEETS-SHEET 2- INVENTOR W ITN ESSES v ATTORNEY UMBXA PLANOGRAPH 60., wksmua'rou n C AMAZIAH L. ROWE, OF NEWPORT, MAINE.

WRENCH.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed. December 23, 1915. Serial No. 68,393.

To all whom 2'25 may concern:

Be it known that I, AMAZIAH L. ROWE, a citizen of the United States, residing at Newport, in the county of Penobscot and State of Maine, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

In plumbing, gas fitting, steam heating, and in various other kinds of pipe work, it is often desired to remove or screw up a nipple without injury to the threads thereon so that the same may be used a number of times. The usual manner of accomplishing this result heretofore has been to apply a Stilson or other wrench having teeth upon its jaws for biting engagement with the surface of the nipple to prevent rotation of the wrench with respect to the nipple when pressure is applied thereto to remove the nipple from the pipe or other element with which it is engaged. The use of such a wrench serves to mutilate the threads of the nipple to such an extent that the same may very rarely be used a second time.

It is the principal object of this invention, therefore, to provide a device for removing or tightening nipples or similar elements in a pipe line or the like, without injury thereto.

As a further object, the invention aims to provide a device which may be utilized in the capacity of a die for running over the threads upon a nipple or a piece of pipe that has been damaged in order to smooth the same up.

A further object is to provide a device of this character which is simple in construction, cheap to manufacture, and which is thoroughly reliable and eflicient in operation.

With the foregoing and other objects in View, the invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings, and claimed.

In the drawings :Figure 1 is a central vertical sectional view through the device. Fig. 2 is an end view. Fig. 3 is a perspective view of the housing. Fig. 4 is an inner face view of one of the dies. Fig. 5is a vertical sectional view through the housing with the dies in elevation showing a manner in which the device may be used, varying from the showing in Fig. 1. Fig. 6 is an end view with parts in section of the device as ,illus,

trated in Fig. 5. Fig. 7 is an end view and side elevation, respectively, of the auxiliary clamping bolt.

Referring to the drawings by numerals, wherein is illustrated the preferred embodi ment of my invention, 1 designates a housing of external polygonal shape having extending therethrough. an opening 2 which has opposite walls 3 thereof curved and merging into other oppositely disposed straight walls 4. This housing upon one of its flat external faces and intermediate its ends, is provided with a threaded opening 5 which extends entirely through the wall of the housing and opens into one of the curved walls; 3 of the opening 2. Diametrically opposite the opening 5 and extending through the wall of the housing but arranged adjacent one end thereof, is a second threaded opening 6 which may be of slightly less diameter than the opening 5. Each end of the housing at diametrically opposite points and in close proximity to the curved walls of the opening 2, has formed therein threaded apertures 7 for a purpose which will presently appear.

A pair of semi-circularly shaped dies 8 and 9 of identical construction have their outer faces curved to fit the curved walls of the opening 2 within which they are arranged. Each of these members 8 and 9 has flattened portions for engagement with the straight walls 1 of the housing 1 to prevent rotation of these members within the opening 2, as will be readily understood. One of these members 8 and 9 is arranged in engageme-nt with each of the curved walls 3 of the housing 1 as shown in Fig. 2 of the drawings, and these members are of slightly less length than the distance from the center of the opening 2 to the remotest portion of the curved walls thereof that movement of these members toward or away from each other is permitted. Headed studs 10 are threaded into the openings 7 in the ends of the housing 1 and have their heads overlapping an edge of the opening 2 and abutting against the end faces of the dies 8 and 9 to prevent removal. of the dies from the housing. One side ofthe heads of these studs is cut away, however, so that by alining this cut away portion of the heads with the opening 2, the dies may be readily removed from the housing.

Each of the dies 8 and 9 is provided with a semi-circularly shaped threaded recess 11,

while one of the dies has formed therein an opening 12 which is adapted to be alined with the opening 6 in the housing 1, when the dies are arranged therein. The opening 12 is circular in shape and extends directly into the threaded recess of the die. Upon the outer face of this die and in axial alinement with the opening 12 is a polygonally shaped recess 13 which extends into the die any desired distance.

A handle 11 is provided with a threaded shank 15 for engagement in the opening of the housing 1 and has formed thereon a polygonally shaped boss 16 to which a wrench may be applied for a purpose which will presently appear.

In use the housing with the dies therein, is slipped upon the end. of the nipple to be removed or screwed up and the shank of fee the handle 14 isthe-n threaded into the opening 5 of the housing 1 until the lower end of the shank engages against the outer face of the die 8. A. wrench is then applied to the boss 16 upon the handle and the handle rotated to force the die 8 into firm clamping engagement with the end of the nipple. The handle is .then gripped at its outer end and the entire device operated as a wrench to either tighten or loosen the nipple.

here a nipple has become rusted or is otherwise hard to remove from the element with which it is engaged and where a sufficient pressure cannot be obtained by means of the threaded shank 15 engaging against the die which prevents rotation. of the device upon the nipple, I provide auxiliary means to eflectively lock the device to the nipple. A bolt 17 having a polygonally shaped head 18 is arranged within the opening 12 with the head 18 in engagement with the recess 13. The head 18 is of less thickness than the depth of the recess 13 so that longitudinal movement of the bolt within the opening 12 is permitted while turning movement of the same is prevented by reason of the polygonally shaped head 18 engaging in the correspondingly shaped recess 18. The inner end of the bolt 17 is threaded in the direction of the threads upon the inner face of the die, as at 19. A set screw 20 has threaded engagement with the opening 6 in the housing 1 and is adapted to operatively engage the head 18 of the nut 17 to force the threads 19 into engagement with the nipple when the set screw is threaded into the open ing 6. By this means a clamping action is obtained upon the nipple independently of the clamping action of the dies 8 and 9 which will serve to effectually lock the nipple against rotation relative to the housing Where a nipple is exceptionally hard to remove the handle 14: in all probability would be too weak to permit of suiiicient pressure being applied thereto to remove the nipple after it has been securely locked with in the housing 1. I, therefore, use a second set screw in conjunction with the device for threaded engagement in the opening 5 for forcing the die 8 inward instead of the handle 14. A Stilson or large monkey wrench may then be applied to the Polygonally shapedexterior face of the housing 1 and sufficient pressure exerted thereon to remove the nipple without liability of breakage of any of the parts of the device.

It is to be understood that any desired number of dies 8 and 9 may be provided which may have various sized threaded recesses formed in their inner faces for engagement with nipples of various diameters. Also, that any variations in the form. or proportion of the invention may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention and therefore, I do not wish to be limited to the particular structure shown except for such limitations as may fall within the scope of the appended claims.

I claim 1. A device of the character described comprising a housing, .a pair of movable dies positioned in said housing, and means for forcing said dies into engagement with a pipe element.

2. A device of the character described comprising a housing, a pair of dies removably positioned in said housing for clamping engagement with a pipe element, and independent pipe-clamping means engaged through said housing and said dies.

3. A device of the character described comprising a housing, clamping elements carried by said housing, and auxiliary clamping means operable independently of the clamping elements.

4:. A device of the character described comprising a housing, a pair of movable clamping members carried by said housing,

and threaded means for forcing said clamping elements toward one another.

5. A device of the character described comprising a housing, clamping members removably positioned in said housing, means to force said clamping elements into clamping relation with a pipe element, and means for preventing longitudinal movement of said clamping elements within said housing.

6. A device of the character described including a relatively fixed clamping element. a movable clamping element, means to force said movable clamping element in one direction relative tosaid fixed clamping element, and auxiliary clamping means operable independently of the said first named clamping elements.

7. A. device of the character described comprising a housing, a pair of dies arranged within said housing for sliding movement toward or. away from each other, said dies being held against turning movement with respect to the housing, said housing being provided with a transverse opening, and means engaged in said transverse opening for forcing one of said dies toward the center of said housing.

8. A device of the character described comprising a housing, relatively movable clamping dies arranged within said housing, an auxiliary clampin element operatively associated with one o said dies, and means carried by the housing for engagement with said auxiliary clamping element to operate said clamping element independently of the dies.

9. In a device of the character described, a housing, clamping dies carried by said housing, one of said dies being provided with an opening and a recess, a headed member arranged in said opening with the head in engagement with the recess, and means carried by the housing for moving the headed member relative to the die.

10. A device of the character described comprising a polygonally shaped housing, said housing being provided with an opening having oppositely arranged curved and straight walls, dies arranged within said opening, said dies being provided with curved walls for engagement with the curved walls of the housing and straight portions for engagement with the straight walls of the housing, means carried by the housing to prevent removal of the dies therefrom, means for moving one die toward the other, and auxiliary clamping means operable independently of the dies.

11. In a device of the character described, a pair of clamping elements, means for forcing said clamping elements into engagement with a pipe element, one of said clamping elements being provided with an opening and a polygonally shaped recess in axial alinement with said opening, a headed member arranged in said opening, the head of said member being of polygonal shape for engagement with the polygonally shaped opening, said head being of less thickness than the depth of the recess, the inner end of the headed member being threaded, and means for moving said headed member relative to said clamping element.

In testimony whereof I aflix my signature in presence of two witnesses.

AMAZIAH L; ROWE.

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

Washington, D. G.

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