US1745224A - Pipe wrench - Google Patents

Description

J. E. MAGNER Jan. 28, 1930.

PIPE WRENCH 2 Sheets--Sheeny l Filed Oct. 18, 1929 Jan. 2s, '1930. J, E, MAGNER 1,745,224

PIPE WRENCH Filed Oct. 21.8, 1929 2 Sheets-Sheet 2 s JEMg/ze swam GRM/nego.

Patented Jan. 28, 1930 UNEED STATES JAMES E. MAGNER, OF WATERLOO, IOWA PIPE WRENCH Application led October 18, 1929. Serial N'o. 400,642.

This invention aims to provide a wrench, the movable liaw of which may be shifted quickly with respect to the fixed jaw, so as to adapt the Wrench for articles of diierent 5 sizes and shapes. Another object of the invention is to provide novel means for disengaging the dog from the pinion of the wrench.

It is within the province of the disclosure to improve generally and to enhance the utility ot devices ot that sort to which the present invention appertains.

`With the above and other objects in view,

which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes may be made in the precise embodiment of the 5 invention herein disclosed, withinv the scope of what is claimed, without departing from the spirit ot the invention.

In the accompanying drawings:

Figure 1 shows in side elevation, a wrench constructed in accordance with the invention, parts being broken away;

Figure 2 is a longitudinal section, parts being broken away, and parts remaining in elevation, the view depicting the wrench as it will appear when in position for work;

Figure 3 is a longitudinal section wherein parts are broken away, the parts being in the positions which they will assume when the dog is disengaged from the pinion, to permit 5 a shittinov of the movable 'aw of the wrench' C 7 Figure 4 is an elevation wherein the wrench is viewed at right angles to the showing of Figure 1;

Figure 5 is a transverse section on the line 5 of Figure 3.

The wrench forming the subject matter of this application comprises a trough-shaped body 1 in which a guide block 2 is held by securing elements 3. A detachable aw 4 is .5 iounted on the guide block 2. Although the jaw 4 may be detached for renewal, it may be described properly as the lined jaw ot the wrench. A wear strip 5 extends along the inner surface of the back ot the body 1 of 50 the wrench and has hooks 6 at its ends which engage the ends of the back of the body 1. Some persons may wish to dispense with the wear strip, and this is permissible.

A slide 7, in the form of a bar, is mounted to reciprocate in the body 1, between the wear strip 5 and the guide block 2. The slide 7 carries a rack 8, and the slide, therefore, may be referred to as a rack bar. The slide 7 has an end piece 9 carrying a removable aw 10 cooperating with the jaw 4. Since the. slide 7 can move back and forth, the jaw 1() is the movable jaw of the wrench.

A support 11, preferably in the form ot' a bolt, is mounted in the side walls of the body 1. On the support 11, a pinion 12 is mounted to turn. The pinion 12 meshes with the rack 8 of the slide 7 and is located within the body 1.

The handle of the wrench is marked by the numeral 14, and includes arms 15. The back end of the body 1 is disposed between the arms 15 of the handle 14, the arms 15 being mounted pivotally on the support 11. rIhus, the handle 14 is mounted to swing with respect to the body. carried bythe arms 15 of the handle 14. A dog 17 is mounted to swing on the pivot element 16'. The dog 17 is disposed between the arms 15 of the handle 14 and is so shaped as to engage with the teeth of the pinion 12 and hold the pinion against rotation. The dog 17 has lateral projections 18 adapted to cooperate with cams 19 on the body 1. A spring 2O is engaged around the pivot element 16. The spring 2() is loop-shaped, and its bend bears on the dog 17 and holds the dog yieldably engaged with the pinion 12. The rear arms of the spring 2O are hooked over the parts 15 of the handle 14. Springs 21 are engaged around the securing elements 3. The rear ends ot' the springs 21 bear against the arms 15 of the handle 14 and aid in keeping the handle in approximate parallelism to the slide or rack bar 7 as shown in Figure 1 of the drawings.

lWhcn the parts are arranged as shown in Figure 2, the dog 17 is engaged with the pinion 12, the pinion 12 meshes with the rack 8, the slide 7 is held against reciprocation, and the jaw 10 remains fixed with re- A pivot element 16 is sol spect to the jaw 4. The operator can swing back the handle 14 into the position of F igure 3, the springs 21 being compressed. nder such circumstances, the projections 18 of the dog 17 are caused to cooperate With the cams 19 of the body l, and, thus, the holding dog 17 is lifted clear from the pinion 12. The inion, then, can rotate as the rack bar 7 sli es and the operator can move the rack bar 7 back and forth to position the jaw 10 as desired with res ect to the jaw 4.

After the necessary adiiustment has been made, the handle 14 can be brought up into parallelism with the slide 7, as shown in Figure 2, the dog 17 engaging the pinion 12, to hold the pinion against rotation, and to keep the slide 7 in the position to which it has been adjusted.

What is claimed is:

1. A Wrench comprising a body having a fixed jaw, a rack bar slidable in the body and having a movable jaw, a pinion journaled on the body and meshing with the rack bar, and a. holding dog pivoted to the handle and engaging t e pinion, the dog and the body having coacting parts that operate calnwise to disengage t ie handle 1s swung with respect to the body.

2. A Wrench comprisinor a body having a fixed jaw, a rack bar slidable in the body and having a movable jaw, a pinion journaled on the body and meshing with the rack bar, a holdin dog pivoted to the handle and engaging te pinion, and means for moving the og with respect to the handle, thereby to lift the dog clear of the pinion When the handle is swung with respect to the body.

3. A Wrench comprising a body having a fixed jaw, a rack bar slidable in the body and having a movable jaw, a pinion journaled on the body and meshin with the rack bar, a holding dog carried y the handle and engaging the pinion to hold the pinion against rotation, the dog being disengageable from the pinion when the handle is swung with respect to the body.

In testimony that I claim the foregoing as my own, I have hereto afliXed my signature.

JAMES E. MAGNER.

dog from the pinion when the

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