Improvements in Monkey Wrenches.
Year: 1892

page_text: Date of Application, 21st Mar., 1892-Accepted, 23rd Apr., 1892
COMPLETE SPECIFICATION.
Improvements in Monkey Wrenches.
A communication from ALEXANDER EDWARD GUNDLACK, of 96, Elliott Street,.
Toronto, and WILLIAM B. POULTON, of West Avenue, Toronto, in the
Dominion of Canada.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Member of the Institution of Mechanical Engineers, 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 :-
The object of the invention is to design a monkey wrench which may be quickly
adjusted and which is adapted to be used either as a plain nut wrench or as a
pipe wrench, and it consists essentially of a head centrally fixed to the end of a
spindle, a portion of the head projecting on one side of the spindle being plain
while the portion of the head on the opposite side of the spindle is notched in the
shape of a pipe wrench and adjustably held and fitted upon a spindle on which
ratchet teeth are formed, the said head being provided with one or two ratchet
pawls and with a grooved block adjustably held to the adjustable head opposite to
the pipe end of the fixed head, substantially as hereinafter more particularly
explained.
Fig. 1 is a perspective view of the improved monkey wrench.
In the drawing, A represents the spindle or shank of the wrench on one end of
which is arranged a handle B, the other end having formed upon or secured to it a
head C. The portion a of the head is perfectly plain to act as one-half of the
head of the monkey wrench. The opposite side is grooved and shaped to act as.
a portion of a pipe wrench.
D is a head adjustably fitted upon the shank or spindle A on which spindle
When the
ratchet teeth d are made preferably on both sides of the said shank.
ratchet teeth d are made on both sides of the shank A, two spring pawls E are
provided as indicated in the drawing. The adjustable head D projects on both
sides of the shank or spindle A and one of the projecting sides corresponds with
and is opposite to the plain side a of the head C while on the opposite side of the
head D a block F is provided, which comes opposite to the grooved portion of
the head C. The block F may be fitted into a recess made in the head D as
indicated, the said block having a projection which fits into the recess made in the
head C, and it may be held there by an adjusting screw G, by which screw the
block F may be readily adjusted nearer to the grooved portion of the head C,.
should the head D not be adjusted close enough to the head C to cause the grooved
block F to grasp the pipe. My correspondents do not however confine themselves
to the use of the screw G as it may be dispensed with.
From this description it will be seen that an extremely simple monkey wrench is
obtained capable of quick adjustment so as to fit any desired size of nut and at the
same time capable of being used as a pipe wrench.
In addition to being a wrench for either a nut or pipe a wrench H is made in one
end of the head C, so that it may be used for the purpose of extracting nails, and
the said head is also shaped so that it may be used as a hammer.
Having now particularly described and ascertained the nature of the said
invention as communicated to me by my foreign correspondents, and in what
manner the same is to be performed I declare that what I claim is,-
As an improved monkey wrench a spindle or shank having ratchet teeth cut on
it and a head fixed on its end and projecting on either side of the shank and
shaped substantially as described in combination with a head adjustably fitted upon

page_text: the shank and provided with a ratchet pawl and a block F movably connected to
the adjustable head substantially as and for the purpose specified.
Dated this 19th day of March 1892.
ALFRED J. BOULT.
Chartered Patent Agent.