US2538851A - Latch means for jaw wrenches - Google Patents

Description

Jan. 23, 1951 w. sNlEzYK LATCH MEANS FOR JAW WRENCHES 2 Sheets-Shee l Filed Sept. 25, 1948 INVENTOR:

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Jan. 23, 1951 w. sNlEzYK 2,538,851

LATCH MEANS FOR JAW WRENCHES v Filed Sept. 25, 1948 2 Sheets-Sheet 2 7 6' T JJ /z /4 /f Z n. 7 57 E. [EL BY Wa/er Sniezyk,

AT TOR EY.

Patented Jan. 23, 1951 STATES PATENTy QFFICE LATCH MEANS FOR JAW WRENCHES Walter Sniezyk, Detroit, Mich.

Application September 23, 1948, 'Serial No. 50,810

' (Cl. SIL- 129) 2 Claims.

My improvement pertains to a wrench which `byy reason of a movab'e member may be effectively' applied to nuts of varying sizes Within the limitsfof the capacity of the wrench.

The wrench is of a type having a stationary surface for application to the head of a nut from one side, and a sliding member by means of which the head may be clamped from vthe opposite side. Once this is done, the sliding member may be locked against displacement. The advantages of this particular type of Wrench will become obvious in the course of the description of my wrench with reference to the accompanying drawings in which:

Fig. 1, is a perspectivefview of the wrench;

Fig. 2, is a plan elevational View of said Wrench;

Fig. 3, is a bottom view of the wrench with parts shown in section;

Fig. 4, is a longitudinal sectional view of line `4 1! of Fig. 2; Y

Fig. 5, is a perspective view of a sliding member of my wrench;

Fig. 6, is a sectional View on line B-I of Fig. 4;

Fig. 7, is a sectional View on line 'l-l of Fig. 4;

Fig. 8, is a sectional view on line 8 8 of Fig. 4;

Fig. 9, is a fragment of my wrench in section, showing a detail of construction therein:

Fig. l0, is a sectional vieW on line I8`III of Fig. 9;

Similar numerals refer to similar parts throughout the several views.

The wrench includes a solid oblong member II] ofy uniform thickness and gradually tapering sides from head I i towards the handle portion I2. The mid-portion of said member is open as shown at I3 from a line adjoining the tapered end to a line adjoining the head, said opening being of uniform width throughout. In other words. the member may be described as an oblong frame with side rails thickening from the handle por tion gradually toward the head II. The inner ,surfaces I4 of the opening are set at right angles to the top surface of the wrench as best shown in Fig. l, each of the side surfaces i4 being grooved longitudinally as shown at I5. A portion of each side rail in the handle part of the wrench is cut out on the underside of the Wrench as shown at I5. This is done for the purpose of inserting into the frame ,a sliding member which will be described presently. v

Each side surface I4 is provided with av plurality of aligned apertures, some of which, marked II, are located above the level of the groove I5, and someof which, marked Ila, are located below the level of said groove. The apertures at each level, are spaced from each other and marked as shown at 32v by numerals arranged in sequence, increasing in value in the direction of the handle.

Disposed within the opening I 3 is a sliding member generally indicated by numeral I8. The member best illustrated in Fig. 5, includes a thick body I9 having at each side a horizontal iin or tongue ZES fitting into a respective groove I5 for a sliding movement therein. Set in a transverse slot 2i, is a bolt 22 provided with a radial handle bar 23 extending outwardly throughout the open top of the slot and permitting the bolt to be shifted manually into one of the apertures I'I above the level of groove I5.

Notches 24 and 25 cut transversely into the side of slot 2i serve to retain the handle bar in place to prevent longitudinal shifting ofY the bolt into or out of aperture II as the case may be. Similar bolt 29 provided with a handle bar 2l, is slidingly disposed in a slot 28 extending transversely in the body of the sliding member I8 below the level of' groove I5. The bolt is adapted to be shifted into a selected aperture I'Ia below the level of tongue 2d. Notches 28 and 33 permit the handle bar to be thrust into one of them, to prevent longitudinal movement of the bolt when it is desired to keep an end of the bolt in an aperture Ila or out of it as the case may be.

The sliding member I8 may be moved longitudinay within the open portion of member I0 to a desired position with respect to markings 32. To eliminate the possibility of having the sliding member drop out through the open space I3, I have provided a stop block 33, which is secured Ywithin the handle portion of the wrench so as to be in the path of said sliding member, when the latter is shifted in that direction. The block limits the extent of the movement of the sliding member so that fins 20 will not completely slide out of grooves I5. The block itself is retained in place by means of a screw 34, passing through said block into the end portion of the body in of the wrench.

I shall now describe the operation of my Wrench:

Assuming that the Wrench is to be applied to the head of a nut, such as is shown in dotted lines and identied by numeral 35 in Fig. 3, the wrench is first placed over the head of the nut in such a manner that one side of the head will bear against the inner surface 35 of the head portion of the Wrench, whereupon the sliding member is moved manually against the opposite side of the head by Way of a clamp. If the head of the screw is of a st-andard size, one of the sliding bolts 22 or 26 will be opposite an aperture I1 or I'la, as the case may be, and the bolt may be shifted endwise into the respective aperture to lock the sliding member against displacement longitudinally with respect to the body of the wrench.

A provision has been made in my wrench to accommodate heads of nuts when a head has an uneven number of sides such as 3 or 5 or '1. In such a case, the sliding member would abut one side of the head, while the tip oppositely positioned at the juncture of two sides would fit into a V-shaped recess 31 in the head of the Wrench as shown in Fig. 2. Normally the recess is iilled by a plug 38 and retained in place by means of a screw 39 as shown in Fig, 3,

It will be understood that the wrench is not limited for use with conventional nuts but that it may be applied to nuts having heads oblong in shape, when two parallel sides maye be considerably longer than the remaining sides. Having described the wrench, what I wish to claim is as follows:

1. A wrench comprising an oblong flat member of uniform thickness but tapering in one direction to form a broad head at one end and a narrow handle at the other end, the mid portion of the member along its longitudinal axis being open in the form of a slot of uniform width, one side wall of the slot being provided with a plurality of apertures spaced from each other and alined on one level, the other side wall being provided with a plurality of apertures spaced from each other and alined at a different level, a sliding member within the slot adapted to be moved longitudinally therein and having a flat face on the end looking towards the two sliding bolts seated transversely within the sliding member, one of the bolts being adapted to be shifted selectively into one of the apertures in one level, and the other bolt being adapted to be shifted selectively into one of said apertures at the other` level, and handle means on each bolt to operate the same.

2. A wrench comprising an oblong body member of uniform thickness but tapering from one end which forms its head to the other end which forms a handle, the mid portion of the member along its longitudinal axis being open to form a slot of uniform width, one side wall of the slot being provided with a plurality of apertures spaced longitudinally at one level, and the other side wall of the slot being provided with a plurality of apertures spaced from each other at a lower level, calibration marks on the top surface of the body member indicating the location of each aperture, a sliding member within the slot adapted to be moved longitudinally therein and having a face at one end looking towards the head of the body member and adapted to serve as a clamp in opposition to the inner side of the head, two sliding bolts seated transversely in the sliding member, one at the level of apertures in one side Wall of the slot, the other at the level of the apertures in the other side wall of the slot, and means to manually shift each bolt into one of the apertures at its level to prevent longitudinal movement of the sliding member with respect to the slot.

WALTER SNIEZYK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 890,111 Walden June9, 1908 979,348 Smith Dec, 20, 1910 1,195,020 Hughey Aug, 15, 1916 1,466,502 Garbacz Aug. 28, 1923 1,505,896 Kershner Aug. 19, 1924 1,616,612 Dodds Feb, 8, 1927 2,293,866 Talch Aug. 25, 1942 FOREIGN PATENTS Number Country Date 127,938 Great Britain June 19, 1919

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