Improvements in Wrenches.
Year: 1897

page_text: Date of Application, 8th Apr.,
1897
Complete Specification Left, 8th Jan., 1898-Accepted, 12th Feb., 1898
PROVISIONAL SPECIFICATION.
Improvements in Wrenches.
We, HARRY LUCAS, of the Firm of Joseph Lucas & Son, Manufacturer, and
WALTER AUGUSTUS WILLIAM FEY, Toolmaker, both of the Tom Bowling Lamp
Works, Little King Street, in the City of Birmingham, do hereby declare the nature
of this invention to be as follows:-
This invention consists of improvements in wrenches for cyclists, and for other
services, our object being to construct a wrench of few and simple parts that can
be very readily adjusted to suit the size of nut or the like, to be operated upon,
and be very rigid between the jaws at any position within the range of adjustment.
We construct a wrench in accordance with our invention from three parts, con-
sisting of a handle having the lower jaw formed therewith, an adjustable stem
with the head or upper jaw at one end and a screw thread at the opposite end,
and a nut suitable for the screwed end of the stem.
The handle part is of H section, and the stem is split or divided to form two legs
which are disposed one on each side of the central web of the handle part. The
upper part of the legs or the divided stem are made a sliding fit within the flanges
of the handle part, but the lower part of the legs are of a semi-circular configuration
and have a screw thread to suit the nut placed in an aperture formed in the web
of the handle part. On turning the nut by the fingers the stem is caused to move
upon the handle part and thus the distance between the jaws is readily adjusted to
the required dimensions. As each leg of the divided stem fits between the guides
or flanges of the handle part and also against the web, the top or movable jaw will
be rigid in whatever position it may be adjusted in relation to the bottom or fixed
jaw.
We preferably form the stem, in the first instance, of a solid rectangular config-
uration at its upper part adjacent to the head, and of a solid circular configuration
at its lower part. We then machine it accurately to the required dimensions, cut
the screw thread along the circular portion, and subsequently divide it by a milling
cutter or in any other convenient manner.
1
1007

page_text: Works, Little King Street, in the City of Birmingham, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement; —
This invention consists of improvements in wrenches for cyclists, and for other
services, our object being to construct a wrench of few and simple parts that can
be very readily adjusted to suit the size of nut or the like, to be operated upon,
and be very rigid between the jaws at any position within the range of adjustment.
In the accompanying sheet of explanatory drawings to be hereinafter referred
to:―
Figure 1 is a side elevation and Figure 2 an end elevation of a wrench constructed
in accordance with our invention.
Figure 3 is a sectional plan on the line a b (Figure 1), and Figure 4 a sectional
plan on the line cd (Figure 1).
The same reference letters in the different views indicate the same parts.
We construct a wrench in accordance with our invention from three parts, con-
sisting of a handle A having the lower jaw A¹ formed therewith, an adjustable
stem B with the head or upper jaw B₁ at one end and a screw thread at the opposite
end, and a nut suitable for the screwed end of the stem.
The handle part A is of H or girder section, as shown at Figures 3 and 4, and
the stem is split or divided to form two legs which are disposed one on each side
of the central web of the handle part A. At the upper part the legs formed by the
divided stem B are made a sliding fit between the flanges of the handle part, but
at their lower part the legs are of a semi-circular configuration and have a screw
thread to suit the nut C placed in an aperture formed in the web of the handle
part. On turning the nut C by the fingers the stem B is caused to move upon
the handle part A and thus the distance between the jaws A¹ and B¹ is readily
adjusted to the required dimensions. As each leg of the divided stem B fits between
the guides or flanges of the handle part A and also against the web, the top or
movable jaw B will be rigid in whatever position it may be adjusted in relation to
the bottom or fixed jaw A¹.
We preferably form the stem B, in the first instance, of a solid rectangular con-
figuration at its upper part adjacent to the head, and of a solid circular configuration
at its lower part. We then machine it accurately to the required dimensions, cut
the screw thread along the circular portion, and subsequently divide it by a milling
cutter or in any other convenient manner.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
An adjustable wrench consisting of the parts A, B, and C in combination,
substantially as described and as illustrated.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents for the Applicants.