Wrench Page: 4 of 5
[2], 3 p. : ill. ; 23 cm.View a full description of this patent.
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818,371
direction indicated by the small arrow. By other horizontal support, as indicated in Fig.
reason of the bend in the handle it is obvious 8, the wrench may be engaged with the work
it may be disconnected from the head and in such a position as to permit of the free end
again connected in the position shown in of the handle resting upon the ground, an-
y outline. other wrench being employed to unscrew a 70
From the foregoing it will be obvious that coupling or other pipe-section, the first-men-
the work may be engaged by either set of tioned wrench being held against turning
teeth and to rotate the work in either direc- with the work by reason of the free end of its
tion without disengaging the wrench there- handle lying upon the ground.
xo from. Another very important feature of the in- 75
Upon reference to Fig. 7 of the drawings, vention resides in the disposition of the han-
wherein the initial application of the wrench dle-receiving seat or socket at an angle .of
to the work has been shown in full lines, it about forty-five degrees to the working face
will be seen that the work is received in the of the wrench-head, together with the dispo-
15 work-receiving recess 18, and the distance be- sition of the inner terminal of the handle at 8o
tween successive engagements of the chain an angle of about forty- five degrees to the
with the shoulders 23 is proportioned with re- longitudinal axis of the handle, whereby the
spect to the depth of the work-receiving re- handle may be shifted to assume positions at
cess as to produce sufficient slack in the chain right angles to one another, which materially
20 to enable the convenient engagement of cer- facilitates the handling of the wrench, and it 85
tain of the projections 22 with said shoulders. enables the application of the latter in two
After the free end of the chain has thus been different relations with the work. This fea-
connected to the wrench-head the wrench is ture will be appreciated by reference to Fig.
moved upon the work to the position indi- 8, wherein it will be noted that the weight of
25 cated by dotted lines, whereupon the work the wrench tends to clutch the same upon the 90
will be wedged between the chain and one of work, and the engagement of its handle with
the toothed jaw portions of the head in a the ground prevents turning of the wrench
manner to prevent slipping of the wrench with the work. If the handle were in the
upon the work. When it is desired to re- position indicated by dotted lines, it could
30 move the wrench, is it moved backwardly not be engaged with the ground, and there- 95
across the work to the full-line position, with fore it would not have the advantage of the
the work situated in the work-receiving re- use as indicated in Fig. 8.
cess 18, whereupon there will be sufficient Having thus described the invention, what
slack in the chain to enable the convenient is claimed is-
35 disengagement thereof from the shoulders 23. 1. A wrench comprising a head having its joo
From the foregoing explanation it will be working face provided with spaced jaw por-
understood that the provision of the work- tions, a flexible work - embracing element
receiving seat or recess between the jaw por- loosely carried by one end of the head and
tions of the head, together with the fact that capable of being drawn around the work,
40 the chain has spaced successive connections said work-embracing element having a series 1o5
with the wrench-head, is a very important of detachable connections with the other end
feature of this invention, in that it enables of the head, there being a work-receiving re-
the convenient engagement and disengage- cess formed in the work-engaging face of the
ment of the wrench with respect to the work head between the jaw portions thereof, the
;5 and also insures an effective gripping of the successive engagements of the work-embrac- f lo
work by the wrench. ing element with the head being spaced rela-
By applying the wrench to an upright pipe, tively to the depth of the work-receiving re-
particularly in connection with oil and Ar- cess to produce slack in the work-embracing
tesian wells, with the pipe received within the element sufficient to permit of the wrench-
5o seat or recess 18, as illustrated in Fig. 7, there head moving across the work until the latter 115
is sufficient looseness to permit of the handle becomes wedged between one of the jaw por-
of the wrench being tilted or inclined up- tions and the work-embracing element.
wardly, so as to bite the upper edge of the 2. A wrench comprising a head having its
wrench-head into the pipe so as to grip the working face provided with spaced jaw por-
55 tool upon the pipe after the manner of a tions, a chain loosely connected to one end 120
clutch, whereby the pipe may be worked up- of the head and provided upon opposite
wardly by manipulating the tool. After the sides with series of lateral projections, the
pipe has beenworked upwardlyfor asuitable other end portion of the head being provided
distance it may be held by another tool of the with spaced seats for detachable engagement
6o same character until a new grip can be ob- by the projections of the chain, there being 125
tained by the first - mentioned tool, or by a work-receiving recess formed in the work-
depressing the handle until the tool is loose engaging face of the head between the jaw
upon the pipe the latter may be permitted to portions thereof, the projections of the chain
drop through the tool. being successively spaced relatively with re-
65 When the work is lying upon the ground or I spect to the depth of the work-receiving re- 1300
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Hall, Samuel N. & Lawlor, James. Wrench, patent, April 17, 1906; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth512310/m1/4/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.