Year: 1899

page_text: A communication by EDGAR WALNUT HUTCHINSON, of 114A, Eleventh Street, San
Francisco, and FRANCIS MICHAEL WRIGHT, of 723, Market Street, San Fran-
cisco, both in the State of California, United States of America, Attorney.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both
in the County of Lancaster118, New Street, Birmingham, in the County of War-
wick, and 323, High Holborn, in the County of Middlesex, Civil Engineer, do
hereby declare the nature of this invention to be as follows:-
This invention relates to a combined separable square, try square and bevel.
The objects of the invention are, first, to provide a carpenter's square which can
be taken apart when not in use, and can then be more conveniently packed away,
secondly, to so construct the separable parts that one of them, in conjunction with
a handle, can be used as a try square, and, thirdly, to so construct said handle
that it may be separately used as a bevel.
For this purpose, one of the arms of the square is formed in two sections, one
of the sections having two prongs, and the other having a tongue sliding between
Baid prongs. The tongue and prongs have their co-engaging edges tongue-and-
grooved. The ends of the tongue and prongs are rounded, and the correlated
parts of the other section are correspondingly concaved. A catch is used to hold
the sections together when in place. The tongue and prongs are each of the full
thickness of the square.
The section which is integral with the other arm may also be used to form a
try square. For this purpose a handle is provided which fits on to said section
in the same way that the other section did.
The handle. also has two pivoted blades which normally are contained in recesses
in the handle but may be drawn out and set at any angle to form bevels.
Dated this 1st day of September 1899.

page_text: A communication by EDGAR WALNUT HUTCHINSON, of 114a, Eleventh Street, San
Franciso, and FRANCIS MICHAEL WRIGHT, of 723, Market Street, San Fran-
cisco, both in the State of California, United States of America, Attorney.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Silicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both
in the County of Lancaster, 118, New Street, Birmingham, in the County of War-
wick, and 322, High Holborn, in the County of Middlesex, Civil Engineer, 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 relates to a combined separable square, try square, and bevel,
and the invention resides in the novel construction, combination, and arrangement
of parts for the above purpose hereinafter fully specified and particularly pointed
out in the claims.
In the accompanying drawing.
Figure 1 is a side elevation of the improved separable square, the ends being
broken away,
Figure 2 is a transverse section on the line 2-2 of Figure 1.
Figure 3 is a side elevation of the try square,
Figure 4 is a side elevation of the bevel.
Figures 5 and 6 are top edge views of the two sections of the bevel, separated.
Figure 7 is a longitudinal section on the line 7-7 of Figure 3.
Figure 8 is an enlarged detail view of the catch, and
Figure 9 is a section on the line 9-9 of Figure 3.
1, 2, represents the arms of a separable square the arm 1 having a right-angled
extension 3. Said extension is forked, as shown, its prongs 4 having rounded
ends with square abutments 5. The inner edges of said prongs, and their ends 6,
have a bevelled edge 7 which fits snugly within a V-shaped groove 8 in the
corresponding tongue 9 of the arm 2. Said arm 2 has concave recesses 10 which
abut against the rounded ends 6 of the prongs 4 and shoulders 11 which abut
against the shoulders 5.
To secure the arm 2 in place, there is provided a catch 12 pivoted at 13 on a
prong
4 of the arm 1, and pressed out by a spring 14 into a notch 15 in the side
of the tongue 9.
By this construction there is provided a separable square of great strength but
which need not be thicker than the ordinary carpenter's square.
20 is a bevel which may also be secured to the extension 3 of the arm 1 to form
a try square, as shown in Figure 3. Said bevel comprises the two parts 21, 22,
secured together by bolts 23 through holes 24, 25, one of said parts carrying on
its inner surface a tongue 26 of similar form to the tongue 9, so that said bevel
may be fitted on the extension 3 of the arm 1 to form a handle for a try square.
The part 21 of the bevel has a circular socket 27 extending to the tongue 26
and the part 22 has a corresponding circular aperture 28, over the catch 12, o
that said catch is accessible from either side of the bevel to release said bevel or
handle from the try square, said catch automatically locking said handle when the
parts are put together Each of the parts 21, 22, contains a bevel plate 30 slotted
at 31 and secured in a slit or groove 32 in the bevel section, a bolt 33 in the
bevel section passing through said slot 31 so that said blade may turn around

page_text: said bolt and at the same time be moved longitudinally, and for the purpose of
securing the blade in any desired position there is provided a thumb screw 34
screwed on to the threaded end of the bolt.
The slit 32 is continued around the bolt 33 to the upper side of the bevel section
to allow the blade to turn freely about said bolt, being terminated in said upper
portion by a bevelled shoulder 35, making an angle of 45° or any other desired
angle with the direction of the bevel.
40 is a small plate sliding in a slit or groove 41 in the end of the bevel handle 20,
which when pushed out supports said end upon the board or other surface that
it is desired to mark.
Having now particularly described & ascertained the nature of the said in-
vention and in what manner the same is to be performed, as communicated to
me by my foreign correspondents, I declare that what I claim is:-
1. The tongue and prongs having sliding engagement with each other and the
ehoulders extending from the base of the tongue around the ends of the prongs.
2. The tongue and grooved edges in the tongue and prongs.
WM. P. THOMPSON & Co.,
Agents.