Improvements in Metallic Squares.
Year: 1896

page_text: Improvements in Metallic Squares.
I, SYDNEY GEORGE EDWARDS of 32 Broomgrove Road, in the City of
Sheffield, Manufacturer, do bereby declare the nature of my invention to be as
follows:-
My invention relates to improvements in the construction and manufacture of
metallic squares, by which I am enabled to produce a more generally useful article,
at a reduced cost.
It is intended more particularly to replace the carpenters square usually made
with a wood block and a steel blade pinned together and which are liable from many
causes to get out of truth.
I propose to make the two L shaped arms (or the foot and blade) of the square
from one piece of sheet steel by cutting or punching it out with suitable cutters, but
in very large sizes I may make the two arms separate and secure them together by
any suitable means.
In the foot part of the square I punch out a narrow longitudinal slot extending
towards each end to receive a strip of metal to form the square face.
This strip is of a thickness corresponding with the narrow slot, and is intended to
project equally from each side of the foot part when in position; it is cut trans-
versley halfway across near each end, and the two short ends are bent down so that
they will lie against the flat side of the foot part where they are secured by screws
or rivets.
I prefer to mark the inside edge of the foot part of the square in inches and parts
of same or like divisions.
I propose when desired to make my improved square in combination with a
bevel blade arranged below the strip or square face and to turn upon an axis
near the corner of the square, and I mark the lines of the most useful angles
upon the flat of the square, so that the bevel may be set to any of those angles with
facility.
CML 1000
1, SYDNEY GEORGE EDWARDS of 32 Broomgrove Road in the City of
Sheffield, Manufacturer, do hereby declare the nature of this invention and in
what manner the same has to be performed, to be particularly described and
ascertained in and by the following statement :-
My invention relates to the construction of metallic squares for the use of
artizans and others, being intended to replace and supersede squares which are made

page_text: with a thin metal blade secured to a wood block and which are very liable to get
-out of truth.
In the annexed drawings I have shown a square made according to my invention
having an adjustable angle piece.
Fig. 1, represents the square with the angle piece closed.
Fig. 2, edge view of same.
Fig. 3, the same square with the angle piece open.
Figs. 4, and 5, two views of the rectangular facing.
I cut out from sheet metal, preferably using steel, the two arms A, and B, in one
continuous piece, but in large sizes I may make them separately and either weld or
-otherwise join them together.
In the part B, I cut out a narrow slot of a size suited to receive a strip of
metal C, shown separately in Figs. 4 and 5, the edges being seen in Figs. 1, 2, 3,
aud which forms a rectangular facing projecting from both sides of the part B.
This strip of metal C, is slit at D, halfway across, and two bits E, are bent down
as seen in Fig. 4, to lie flat against the side of the part B, when the strip is passed
into the slot; they are prepared with holes F, and are permanently fastened to the
part B, by screws or rivets.
To render this instrument still more useful for some purposes I also add thereto
when desired an adjustable blade or angle piece G, which may be fixed at any
desired angle by means of the winged nut H.
I make this blade of such proportions that it will close under an 1 lie against the
part C, as in Fig. 1, and upon its circular end I mark various indications of
useful angles, I may also mark the parts A, and B, with any desired divisions for
measurement.
Having now particularly described and 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 the construction of metallic squares, the transverse facing C, made from a
strip of metal passed through a slot in the part B, and secured thereto, as
hereinbefore described and shown.
2. A square having a transverse facing C, and an angle piece G, constructed as
herein before described and shown.
ROBT. F. DRURY, C.P.A.,
Bank Buildings, George Street, Sheffield, Agent for Applicant.