Improvements in Combination Pipe and Nut Wrenches.
Year: 1890

page_text: Date of Application, 24th June, 1890-Accepted, 26th July; 1890
COMPLETE SPECIFICATION.
Improvements in Combination Pipe and Nut Wrenches.
I, ERASTUS EDWIN KING, of Lee's Summit, in the County of Jackson, and
State of Missouri, United States of America, Inventor, do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:
This invention has relation to pipe and nut wrenches and the objects and advantages
of the invention together with the novel features thereof will hereinafter appear
and be particularly pointed out in the appended claims.
Referring to the drawing:
Fig. 1 is a side elevation of a wrench constructed in accordance with my
invention.
Fig. 2 is a similar view partly in vertical section and
Fig. 3 is a detail in front elevation of the locking lever.
Fig. 4 is a detail view to show the claws on the jaws.
Fig. 5 is a detail of that portion of the stock in which
recesses.
are located, the
Like numerals of reference indicate like parts in all the figures of the drawings.
1. represents the stock of the wrench which is rectangular in cross section and
terminates at its upper end in a head 2 projected at one side of the stock to form a
stationary jaw 3 ending in a beveled hammer face and at the opposite side of its stock
in a claw 4 curved to form one member of a pipe-wrench jaw. The stock is reduced
near its lower end, forming a shank threaded at its lower end and mounted upon
the stock at about its juncture with the stock, is a ferrule 5 from which projects
a lug 6.
:
Below, the ferrule there is mounted upon the shank an ordinary wooden handle 7
bound in position upon the shank by a nut 8 taking over the threaded end of the
shank. 9 represents a sliding or movable jaw provided at one end with an opening
of a size and shape adapted to fit the stock 1, the shank 10 of the jaw being.of
rectangular shape in cross section and arranged face to face and parallel with the
stock 1 and upon its inner face provided with a series of teeth 11 and terminating
at its lower end in a reduced depending stud 12.
Having its upper end encircling the stud and its lower end bearing upon the
lug 6 is a coiled spring 13 the tendency of which is to force the movable jaw
upward and in contact with the fixed jaw. In the side face of the stock 1 and
near its lower end there is formed an irregular recess or seat 14, the lower wall
of which is provided with a semicircular bearing 15 and the upper wall cut away
as at 16.
17 represents a locking pawl which is somewhat of an L-shape, the angle of the L
being provided with a bearing rib 18* which rests within the seat 15 and the upper
portion of the L being provided with a widened and toothed. head 18 which
rests within the cut away portion 16 at the upper end of the recess 14 and is
normally forced beyond the edge of the stock 1 so that the toothed head 18 will
intermesh with the teeth of the shank 10. The foot of the L-shaped pawl is pro-
vided near its end and at one side of its bearing with a lug 19. 20 represents a
locking lever mounted in the recess 14 in rear of the locking pawl and the same
comprises a head 21 pressing upon the rear face of the head 18 and a projecting
lever portion 22.
.....

page_text: The parts are so disposed that the head 21 lies within the angle of the L-shaped
locking pawl and said head is provided upon its underside with a lug 23 corre--
sponding with the lug 19 of the pawl and interposed between the head and lever
and having its upper and lower ends encircling the lugs 19 and 23 is a light
coiled spring 24 which, it will be apparent serves to press the head 21 of the locking
lever against the rear face of the toothed head 18 and consequently normally projects
said toothed head into mesh with the teeth 11.
25 represents an encircling band or collar which rests upon. the upper edge of
the ferrule and extends up and incloses the mechanism described, the lower end of
the shank 10 occurring within the upper end of the band or collar. Openings are
formed through the band or collar and the stock at suitable intervals and through the
same are passed bolts 26. The lower rear portion of the band or collar is slotted as
at 27 and through it projects the extremity of the lever portion of the locking lever,
said extremity being outwardly bent as at 28.
The operation of my invention will be readily understood from the foregoing
description but may be briefly stated as follows:-In order to spread the jaws, the
thumb is employed to draw down upon the bent portion 28 of the locking lever
which exerts pressure upon the foot of the L-shaped locking pawl and therefore in
rear of the bearing 18* thus causing said pawl to be withdrawn from mesh with
the teeth 11 of the shank 10 which shank, may now be forced against the tendency
of its spring into the band or collar and after a sufficient spread has been obtained
the locking lever is released and the parts resume their locked position.
To decrease the spread or width between the jaws it is simply necessary to press
the locking lever in the same manner as before described, when the coiled spring 13
serves to force the movable head toward the stationary head and by releasing the
lever the travel of the movable jaw may be stopped at any suitable point.
Opposite the claw portion of the stationary jaw, the sliding jaw is provided with a
series of teeth.9* to coact with the curved jaw in gripping pipes, rods, etc.. -
Having now particularly described an ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. In a wrench, the combination. with the stock 1, terminating at its upper end in
the head 2 and having claw 4 and having the irregular recess 14 terminating at its
lower end in the bearing 15 and at its upper end in the cut away portion 16, of the
L-shaped locking pawl 17 having the transversely toothed head 18, located in the
cutaway portion, the bearing 18* at its angle, the foot provided with the lug 19, the
locking lever 20 terminating at its lower end in the bent handle 22 and at its upper
end in the head 21, having the lug 23, the spring 24 encircling the lugs, the shank 10
toothed as at 11 and provided with the head 9, toothed as at 9* and lug 12, the
collar 5 having the lug 6 the coiled spring 13 and the band or collar encircling
the shank, stock and leaking mechanism, substantially as specified.
2. In a wrench, the ombination with the stock 1, terminating at its upper end in
the stationary head 2, tits lower end in the reduced threaded shank and provided
between its head and shauk with the irregular recess 14, terminating at its lower end
in the bearing 15 and at its upper end in the cut away portion 16, of the L-shaped
locking pawl 17, having the transversely toothed head 18 located in the cut away
portion, the bearing 18* at its angle, the foot provided with the lug 19, the locking
lever 20 terminating at its lower end in the bent handle 22 and at its upper end in
the head 21 having the lug 23, the spring 24 encircling the lugs, the shank 10
toothed as at 11 and provided with the head 9 and lug 12 the collar 5 having
the lug 6, the coiled spring 13 interposed. between the lower end of the shank
and lug, the encircling band, encircling the stock and shank and the locking
mechanism, the handle 7 mounted on the shank of the stock below the collar and
the binding nut 8 threaded on the lower end of said shank, substantially as specified.

page_text: 3. In a wrench, the combination with the stock 1 terminating at its upper end in
the head 2, of the L-shaped locking pawl 17 having the transversely toothed
head 18, the bearing 18* at its angle, the locking lever 20 terminating at its.
lower end in the bent handle 22 and at its upper end in the head 21, the spring 24,
the shank 10 toothed at 11 and provided with the head 9, the collar 5, the
coiled spring 13 and the band or collar encircling the shank, stock and locking.
mechanism, substantially as specified.
Dated.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.