US1990137A - Wrench - Google Patents

Description

' Feb. 5, 1935. N 1 SCHRUBB 1,990,137

WRENCH Filed April 14, 1934 2 sheets-sheet 1 nvenlor Feb. 5, -1935.L

N. JL SCHRUBB WRENCH Filed April 14, 1934 2 Sheets-Sheet 2 Byw `/qllorney Inventor Patented Feb. 5, l1935 A y Y, i l 1,990,137

i UNITED STATES PATENT OFFICE WRENCHy Norman John sehrubb, Meadville, Pa. Application April 14, 1934, Serial No. 720,630

1 claim. (o1. s1160) This invention appertains to new and useful shank 10, as in the manner clearly shown in Figure improvements in wrenches, and more particu- 2. This lug 18 has a base portion 20 from which larly to a wrench of the slidable outer jaw type. extends the member 21 having Tight-angula'lly The principal object of the present invention disposed pins 22 extending therefrom. The memis to provide a slidable outer jaw type of wrench ber 21 is provided with a pair of side members 23 5 wherein the outer jaw is spring projected and which engage Within the undercut Channel 6 'G0 the adjusting nut therefor is released from conprevent the lug 18 from becoming displaced I'Om nection therewith. the wrench handle. The pins 22 project through Other important objects and advantages of the the end convolutions of a spring 24 located within invention will become apparent to the reader of the channel 6, with one endimpinging against one 1,0 n

the following specification. end of the channel, while the opposite end im- In the drawings: 1 pinges against the member 21 on the lug base 20. Figure 1 represents a side elevational view of Thus it can be seen that when adjustment is the novelfwrench. required, of the outer jaw, the nut.- 12 can be Figure 2 represents a side elevational view of forced inwardly of the transverse channel 14, so 15 the wrench, shown partly in section. that the internal threads thereof will disengage Figure 3 represents a cross sectional view taken from the teeth 11. The spring 24 will now exert substantially on line 3 3 of Figure 2. its tension on the shank'lO and force the same Figure 4 represents a sectional view taken suboutwardly so that the outer jaw lwill automatistantiallyon line 4-4 of Figure 1. cally space itself from the inner jaw 8. Fingers 20 Figure 5 represents a perspective view of the `25 extend laterally from the handle 5 and are in spring connected lug. a position to serve as retainers or guides for the Figure 6 represents a fragmentary top plan rearend of the nut 12, as in the manner subview of the wrench. stantiallyshown in Figure 1.

Referring to the drawings wherein like nu- While the foregoing specification sets forth the 25 merals designate like parts, it can be seen in invention in specific terms, it is to be understood Figure 2, that numeral 5 represents the usual that numerous changes in the shape, size and handle which is provided with an undercut chanmaterials may be resorted t0 Without departing nel 6 therein defining an elongated slot 7 through from the spirit and SCOPE 0f the iIlVention as the top side of the handle. claimed hereinafter. 30

Numeral 8 represents an inner jaw of the What is claimed iszy wrench, while numeral 9 represents the Outer A wrench of the character described comprisjaw provided with the shank 10 having the teeth ing a handle, an-inner Jaw on the handle, an 11 with which the internal threads of the adouter jaw, Said Outer jaw being provided with a justing nut 12 are engageable, this nut circumtoothed shank, a slideway on the handle for the 35 scribing the shank in the manner substantially said shank, an internally threaded nut for the shown in Figure 2, and being operable at the Vshank; and. displaceable relatively thereto where'f rear of the shank slideway 13 and partly within by the said shank can be fed forwardly or rearthe transverse channelway 14 in the handley 5. wardly through the said slideway, said handle n In this channelway 14 are secured two arcuatebeing provided with a bore therein, a spring in 40 shaped spring leaves 15 by a suitable screw 16 the bore, a lug, said handle being provided with and as is clearly shown in Figure 4, the nut 12, an undercut slot opening into the bore of the at its inner side, has a longitudinally extending handle, a projection on the lug slidable in the cut-away portion 1'7. However, the spring l5 said slot, a pin on the projection extending from serves to urge the knurled nut 12 outwardly so the lug for disposition through end convolutions 45 that its internal threads will mesh with the teeth of the said spring, means securing the said lug 11 of the outer jaw shank 10. to the shank and side members on the said pin Numeral 18 represents a lug having an opening disposed in the slot to prevent displacement of therein through which the machine screw 19 is the pin therefrom. f disposed and threaded into the rear end of the NORMAN JOHN SCHRUBB. 50

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