An Improved Bevelling Square.
Year: 1890

page_text: Date of Application, 25th Mar., 1890
Complete Specification Left, 17th Dec., 1890-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
An Improved Bevelling Square.
I, JOHN PITT BAYLY, of 18, Fulham Place, Paddington, in the County of
London, Patent Agent, (a communication to me from abroad by James Delancett,
and Addison Child, both of Childwold, in the State of New York, U.S.A.,
Gentlemen,) do hereby declare the nature of this invention to be as follows:-
This invention has reference to an improved bevelling square, and the invention
has for its object, to provide an instrument which will enable angular measurements
to be made at both sides, and at both ends thereof.
The parts of the instrument made in accordance with this invention consist of,
and are arranged in combination as follows.
A longitudinally slotted plate of convenient length is provided, to which is
attached at both ends, two squares consisting of two arms at right angles. One
arm of each square is bevelled and the other arm of each square is provided with a
threaded stem or stud which is arranged to be adjusted in the slot of the plate at
any desired position by suitable thumb-nuts upon the stems and by which nuts the
squares are clamped to the slotted plate.
Dated this 96th day of March 1890
J. P. BAYLY,
Applicant.
COMPLETE SPECIFICATION.
An Improved Bevelling Square.
I, JOHN PITT BAYLY, of 18, Fulham Place, Paddington, in the County of
London, Patent Agent, do hereby declare the nature of this invention (a com-
munication to me from abroad by James Delancett, and Addison Child, both of
Childwold, in the County of St. Laurence, New York, U.S.A., Inventors,) to be
as follows:-
This invention relates to bevelling-squares.
The object of the present invention is to provide a measuring-instrument
adapted to be adjusted for making angular measurements in both ends of a board
at the same time, and for simultaneously marking both sides of an angular recess,
and kindred uses where accurate angular measurements are necessary.
The invention consists in the construction and novel combination and arrange-
ment of parts hereinafter fully described and illustrated in the accompanying
drawings, and pointed out in the claim hereto appended.
In the drawings,
Figure is a perspective view of a measuring instrument constructed in
accordance with this invention. Fig. 2 is a reverse plan view. Fig. 3 is a
transverse sectional view.
Referring to the accompanying drawings by letter, A designates a plate, which is
constructed of suitable material, preferably steel, and is provided with a longi-
tudinal slot a, which extends throughout its entire length to within a short distance
of the ends, to permit squares 13 to be adjusted thereon. The squares Bare
adjusted along the longitudinally-slotted plate A, and retained in any desired
position against accidental slipping by set-screws C, which consists of a threaded
stem, that is secured rigidly to the end of the arm of the square B, and is
arranged in the slot and projecting beyond the plate, and a thumb-t C, engaging
the threaded stem and clamping the side of the plate.
By this construction the
squares B may be adjusted at any desired angle to the longitudinally-slotted
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page_text: plate A, which enables both ends of a board to be accurately marked at the same
time for cutting, and also enables accurate measurements of angles to be rapidly
taken without any tedious calculations.
The uses to which the measuring-instrument may be put are numerous, and
will readily suggest themselves. The ends of the long arm 2 of the square B
are beveled, and the surface of the measuring-instrument is provided with suitable
graduations.
From the foregoing description and the accompanying drawings, the construction,
operation, and advantages of the invention will be readily understood.
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 :-
A measuring-instrument comprising the longitudinally-slotted plate, the squares
having their arms provided with integral threaded stems arranged in the slot of
the plate, and the thumb-nuts engaging the stems and clamping the squares to the
plate, said squares being adapted to be adjusted along and arranged at any desired
angle to the plate, substantially as described.
Dated this 17th day of December 1890.
J. P. BAYLY,
Applicant.