Improvements in Compasses.
Year: 1894

page_text: The decision of the Comptroller-General, of the 10th day of July 1895, allowed,
under Section 18 of the Patents, &c. Act, 1883, an Amendment of this
Specification.
Date of Application, 8th Feb., 1894
Complete Specification Left. 2nd Nov., 1894-Accepted, 8th Feb., 1895
Improvements in Compasses.
I FRANK HENRY SHAW of 51 and 52 Newhall Hill Birmingham Manufacturer
do hereby declare the nature of this invention.to be as follows:-
My invention has for its object improvements in compasses and has particular
reference to the holding or gripping parts of the same in which a pencil, pen,
crayon or any other such articles are held; hitherto compasses have been so made
that it has been necessary to have several sized compasses to hold various sized pencils
& such like for each different kind of work but by my invention the one compass. will
hold any size pencil or such like.
Upon a short leg of an ordinary compass a slit tube is formed through which the
pencil is inserted & the tube is tightened by means of a screw thus holding the
pencil in place of this tube I form a round projection through which I drill a
hcle of sufficient size to allow an ordinary pencil to pass, around the outside of this
projection I form a screw thread over which a collar works which has an internal
screw thread so that when the pencil of any size is inserted the collar is screwed
up close to it & so holds the pencil.
It will be seen that à pencil smaller than the size of the hole can be used.
In cases of very large compasses such as beam compasses it will be readily
understood that I can make them of either wood or metal.
A modification of this form of holder is that instead of a simple screw I make a
ring which is internally screwed & somewhat broader than the before mentioned
collar & is cut away in a screw fashion so that when the collar is turned the screw
on the collar tightens the pencil.
Dated the 7th day of February 1894
-
mprovements in Compasses.
I FRANK HENRY SHAW of 51 and 52 Newhall Hill Birmingham in the County of
Warwick Manufacturer, 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 :-
My invention bas for its object improvements in compasses and has particular
reference to the holding or gripping parts of the same in which a pencil, pen
crayon or any such article are is held. Hitherto compasses have been so made that
it has been necessary to have several sized compasses to hold various sized pencils
-

page_text: Ce for each umerent kind of work but by my invention the one compass
will hold any sized pencil crayon or such like.
Upon the short leg of the ordinary metal compass a slit tube is formed through
which the pencil is inserted & the tube is tightened by means of a small screw thus
holding the pencil.
Instead of this tube and screw I form upon the end of the short leg of the compass a
round projection through which I drill a hole of sufficient size to allow an ordinary
pencil to pass. around Around the outside of this projection I cut a screw thread
over which works a an inside-screwed clamping collar so that when the pencil of
whatever size is inserted through the hole in the said projection, the collar is screwed
up close to it and so holds it tight. it It will be seen that a pencil smaller than the
hole can be used.
In order that my invention may be clearly understood and carried into practice 1
have appended hereunto a sheet of drawings upon which I have fully illustrated the
nature of my said invention.
Figure 1 is a front view of a compass made according to my invention.
Figure 2 is a side view of the same.
Figure 3 is a part sectional plan through the one leg of the compass at line 1. 2
but without the pencil.
Figure 4 is a broken off view of the one leg of a compass showing a small round
pencil clamped thereto.
Figure 5 is a similar view, but with a steel point shown. substituted for a pencil.
Figure 6 is a broken off plan of the end of a beam compass showing a modification
of my invention.
Figure 7 is a side elevation of the same.
Figure 8 is a view of part of this modification separate from compass.
In carrying my invention into effect I form upon the short leg A of a compass
such as B or such similar compass a round projection C having a hole D drilled
through for the purpose of holding any sized or any shaped pencil, pen, crayon or
such like, this hole-D. This projection C has a screw thread cut around its circum-
ference upon which a an inside screwed collar E screws, so that when the pencil or
such like is inserted through the hole D the collar is screwed over the projection C
until it binds the pencil tightly against the back part of the hole D. As will be
seen in Figures 1 and 4 any shaped pencil may be used or when a pencil is not
required a simple steel point may be inserted as seen at. Figure 5 so as to use the
compass as dividers just as effectively. It will be seen that the invention may be
used for those large compasses known as beam compasses and two collars E & E'
as seen in Figure 4 may in some cases be used.
Figure Figures 6, 7 & 8 show a modification in the form of the collar portion of
my invention, and in Figures 6 and 7 1 have shown it applied to a beam compass
but it will be understood that it can be applied to such compasses as those already
described. In this case I use a broader internally wormed collar F than those shown
in Figures 1, 3, 4 and 5. I cut a portion of the metal away as seen more clearly
in Figure 8 so as to leave the inclined cuts e¹ and e² and instead of the collar F
being on the outside of the pencil it will be noticed that it is on the intside in this
case the. The action is as follows;-When the pencil is inserted through the hole D
a twist of the collar causes the inclined cuts e¹ at the top and eat the bottom to
bind against the pencil and so force it against the front part of the hole D no
matter however large or small the pencil may be and so tightly clip it all round.
It will be seen that compasses made according to my invention can be produced
very cheaply whilst at the same time will be very effective in their purpose and they
can be made in wood as well as metal.
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
1st. Improvements in compasses having a projection-such as C-and-a-collar-or

page_text: collars such as E substantially as and for the purpose herein set forth and
described.
2nd. Improvements in compasses having a collar such as Feither with or without
a projection such as C as and for the purpose as herein set forth and described.
First: A compass, having at the end of its short leg, an outside screwed and cross-
pierced projection C, upon which an internally screwed collar or collars E, takes or take,
substantially as and for the purpose described and set forth.
Secondly: A compass, having an incline faced and inside screwed collar F, for taking
upon an outside screwed cross-pierced projection or beam end, as and for the purpose
described and set forth in Figures 6, 7 and 8.
זוני.
1001
FRANK HENRY SHAW.