Improvements in and relating to Drawing Pins.
Year: 1896

page_text: Date of Application, 17th July, 1896-Accepted, 22nd Aug., 1896
COMPLETE SPECIFICATION.
Improvements in and relating to Drawing Pins.
I, AUBERON PENRY REES WILLIS of High Elms, Leatherhead, in the County of
Surrey, Clerk, 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 :-
The improvments constituting my invention consists of the application and
fixation to the under surface of a drawing pin of a disc of rubber, rubber composition
or other resilient material, or of a recess formed in the under surface of such a pin
for the reception, and fixation of such a disc, and the employment of rubber solution
or other suitable cement to effect the said fixation, the object of my invention being
to affect a more rigid fixation of the drawing or tracing of the drawings, upon the
board, and preventing this from slipping from under the heads of the pins as obtains
more or less with the use of all drawings pins when the under metallic surface of
the head is in direct contact with the surface of the drawing paper or tracing as
hitherto.
In order that my said improvments may be fully understood I have hereunto
appended a sheet of drawings of which
Fig. 1 is an enlarged sectional elevation of that type of drawing pin in which the
stem or pin is punched from the substance of the head, and to which my said
improvement has been applied, Fig. 2 being an under plan view of the same.
Fig. 3 is a section (similar to Fig. 1) of a drawing pin having a solid head, and to
which my said improvement has been applied. Fig. 4 being an under plan view of
Fig. 3.
In so far as relates to the type of drawing or tracing pin in which the pin or
stem A is punched or pressed from the substance of the head B, as illustrated by
Fig. 1 and 2, and in which the substance of the said head is too shallow to admit
of a recess being formed therein, I fix upon the under surface of B, by the aid of solution
or other suitable cement, a thin disc C, of rubber, rubber composition or other
resilent substance, capable of having a bite upon the surface of a drawing or tracing
the said disc C being preferably circular, and of a diameter slightly less than that
of the head B, in order that the bifurcated instrument ordinarily used for withdrawing
such pins from the board may be employed effectively without injury to the edge
of the disc C.
In Figs. 3 and 4 I illustrate the manner in which I prefer to construct drawing
or tracing pins having heads with a convex upper surface, irrespective of whether
or not these may be provided with an attached handle for withdrawing them from the
board without the use of the usual fork like instrument. For the purposes of my
invention I form in the substance of the under surface of the head B₁ of such a pin,
(having a rigid attached pin or stem A') a preferably circular recess D, and in this
I place and fix by the means of like cement, a preferably circular disc (, of rubber,
rubber composition or other resilient substance, capable of having a bite upon the
surface of the drawing or tracing, such disc C being preferably of greater thickness
than the depth of the recess D, in order that the said disc may stand out beyond the
under face of B', (as shewn at Fig. 3) that C and not B' may be in contact with
the drawing or tracing, the said disc C being also preferably of less diameter than
the head B' for the same purpose as that stated when describing Fig. 1.
From the forgoing it will be understood that, by reason of the resilient disc (or Ct
being the surface that always makes contact with the drawing or tracing, that such

page_text: drawing or tracing would thereby be firmly held and prevented from stretching or
tearing as frequently obtains when the paper-drawing is being cleaned with rubber,
and held by drawing pins in direct contact therewith.
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. The application and fixation to the under surface of a drawing pin, of a resilent
surface of lesser diameter than that of the head of the said pin, substantially as
herein described and shewn.
2nd. In combination with a drawing or tracing pin such as B A, the application
and fixation thereto, by the use of any suitable cement, of a resilient disc such as C,
substantially as and for the purposes herein described and shewn by Figs. 1 and 2
of the drawings.
3rd. In a drawing or tracing pin the combination with such a pin of a recess D,
formed in the under surface of same, and the employment of a resilient disc
such as C', fixed therein by the use of any suitable cement, substantially as and
for the purposes herein described and shewn by Figs. 3 and 4 of the accompaning
drawings.
Dated this 17th day of July 1896..
GEO. THOS. HYDE,
1 Broad Street Buildings, Liverpool Street, London, E.C.,
Agent for Applicant.