US759715A - Wrench. - Google Patents

Description

No. 759,715. PATENTBD MAY 10, 1904.

Gr. W. JESSUP, JR.

WRENCH.

APPLIATION FILED NOV. 1l, 1903.

N0 MODEL.

mmmml l UNITED STATES Patented May 10, 1904.

PATENT GEEICE.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 759,715, dated May l0, 1904. Application filed November ll, 1903. Serial No. 180,657. (No model.)

T0 all whom, zit may concern:

Beitknown thatI, GEORGE W. JEssUr, J r., a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful lmprovem ents in Wrenches, of which the following is a specification.

This invention relates to wrenches, and has for its object to provide a simple and eflicient construction whereof the jaws may be readily adjusted toward or from each other, and after being adjusted to engage two opposite sides of a nut or other object the movement of the handle in one direction will cause the jaws to be held rigidly with relation to each other for the purpose of turning the nut, and the movement of the handle in the reverse direction will cause the jaws to beheld yieldingly withrelation to each other, thereby permitting one jaw to move away from the other for the purpose of passing the jaws around the corners of the nut for their engagement with two of its other sides.

The invention consists in the novel construction and combination of parts, which will be hereinafter fully described and claimed.

In the drawings, Figure 1 is a side elevation of my improved wrench. Fig. 2 is a view as seen at right angles to Fig. 1. Fig. 3 is a view similar to Fig. 1, showing the parts in a different position. Fig. 4 is a longitudinal section, as on the line 4 4 of Fig. 2. Fig. 5 is a transverse section, as on the line 5 5 of Fig. 1. Fig. 6 is a transverse section, as on the line 6 6 of Fig. 1.

1 designates the stock, having formed on one end thereof the handle 2. Pivoted to the other end of the stock, as at 3, is a jaw 4, provided with a shank 7, which embraces the stock 1 and extends toward the handle 2. '.lhe free end of the shank has a slight movement toward and from the stock 1 when rocked upon the pivot 3.

Surrounding the shank 7 and stock 1 is a member 8, one end of which is provided with a jaw 9. The member 8 is 'slidingly iitted to the shank 7 and is longitudinally adjustable thereon. The other end of the member is provided with a projection 10, between which and the jaw is mounted a rotatable adj ustingscrew 11, provided with a knnrled head 12, by means of which the screw 11 may be turned. Fitted to the threads of the screw 11 is an adjustingnut 13, provided with a projection 14, which extends between the sides of the member 8, and thereby prevents rotation of the nut whilethe screw is being turned.

The handle 2 is provided with a centrallyarranged longitudinal opening 15, having therein a spring 16, one end of which bears against a transverse block 17, which extends through a slot 18 in the stock and takes against one end of the mem ber 8. The pressure of the spring 16 tends normally to act upon thc member 8 and force the'projection 14 of the adjusting-nut 13 into engagement with a notch 19 in the shank 7. Thus it will be seen that the normal position of the nut 13 is in engagement with the shank 7 and that by turning the screw 11, the member 8, and perforce the jaw 9, may be moved toward or from the jaw 4, as desired.

The stock 1 is provided with a notch 20, which is arranged to Abe moved into or out of engagement with the projection 14 by moving the stock on the pivot 3 when the projection 14 is in engagement with the notch 19 of the shank. The purpose of the notch 19 is to prevent the movement of the jaw 9 toward the jaw 4, and the purpose of the notch 2O is to prevent the movement of the jaw 9 away from the jaw 4. It will therefore be seen that by moving the stock to disengage the notch 2() from the projection 14 the jaw 9 may be moved away from the jaw 4 against the action of the spring 16, as shown in Fig. 3, and that by moving the stock to engage the notch 2O with the projection 14 after the spring 16 has returned the jaw 9 to its normal position the jaws 4 and 9 will be held rigidly with relation to each other, as shown in Fig. 1.

The operation of the wrench may be briefly described as follows: The thumb-nut 11 is first turned to adjust the jaws 4 and 9 to [it two sides of the nut. The handle 2 is then moved in the direction indicated by the arrow in Fig. 1, thereby engaging the notch 2O with the projection 14, and during the continued movement of the handle the jaws are held rig- IOO idly together and the nut is turned with the wrench. After the nut has been given a partial turn the movement of the handle 2 is reversed. This operation moves the stock 1 on the pivot 3 to disengage the notch 2O from the projection 14, and continuing the movement of the handle 2 to turn the jaws around the corners of the nut the jaw 9 is thereby forced away from the jaw 4 against the action of the spring 16, as shown in Fig. 3. As the opposing faces of the jaws 4 and 9 are brought parallel to two other sides of the nut, the spring 16 gradually returns the jaw 9 to its original position. After the jaw 9 reaches its normal position the movement of the handle 2 may be again reversed to engage the notch 2() with the projection 14 for a succeeding operation, and so on until the nut has been given the desired number of turns.

I claim- 1. In a wrench, the combination of the stock, a jaw pivoted thereto and provided with a shank, a second jaw slidingly tted to said shank, means for engaging the second jaw with the stock and means for adjusting said means with respect to the second jaw, substantially as described.

2. In a wrench, the combination oi' the stock, a jaw pivoted thereto and provided with a shank, a second jaw slidingly fitted to said shank, means for engaging the second jaw with the stock, and a screw for adjusting said means with respect to the second jaw, substantially as described.

3. In a wrench, the combination of the stock, a jaw pivoted thereto and provided with a shank, a second jaw slidingly fitted to said shank, means for engaging the second jaw with the stock, a screw for adjusting said means with respect to the second jaw, and a spring tending to force said jaws toward each other, substantially as described.

4. In a wrench, the combination of the stock, a jaw pivoted thereto and provided with a shank, a second jaw slidingly fitted to said shank, means for engaging the second jaw with the stock, a spring tending to force the second jaw toward the lirst jaw, means 'for limiting the movement of the jaws toward each other, and means for adjusting said means, substantially as described.

5. In a wrench, the combination of the stock provided with a notch, a jaw pivoted to the stock and provided with a shank, a second jaw slidingly fitted to the shank, a projection carried by the second jaw and adapted to engage the notch, and means for adjusting the projection, substantially as described.

6. In a wrench, the combination of the stock provided with a notch, a jaw pivoted to the stock and provided with a shank, a second jaw slidingly itted to the shank, a projection carried by the second jaw and adapted to engage the notch, means for adjusting the projection, and a spring tending to force said jaws together, substantially as described.

7. In a wrench, the combination of the stock provided with a notch, a jaw pivoted to the stock and provided with a shank, a second jaw slidingly fitted to the shank, means carried by the second jaw for engaging the notch and shank, and a spring tending to force said jaws together, substantially as described.

8. In a wrench, the combination of the stock provided with a notch, a jaw pivoted to the stock and provided with a shank, a second jaw slidingly fitted to the shank, a screw connected to the second jaw, and a nut carried by the screw and adapted to engage said notch, substantially as described.

9. In a wrench, the combination of the stock provided with a notch, a jaw pivoted to the stock and provided with a shank, a second jaw slidingly tted to the shank, a screw connected to the second jaw, a nut carried by the screw and adapted to engage said notch and shank, and a spring tending to force the second jaw toward the rst jaw, substantially as described. In testimony whereof I ailix my signature in presence of two witnesses.

GEORGE W. JESSUP, JR. Witnesses:

ANDREW V. GROUPE, RALPH H. GAMBLF..

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