Improvements in Cyclostyle" Pens for Producing Stencils to be Employed in the Reproduction of Writings, Drawings, and other Delineations.
Year: 1888

page_text: Date of Application, 16th Aug., 1888
Specification Accepted, 28th Sept., 1888
RESH
66
Improvements in Cyclostyle" Pens for Producing Stencils to be
Employed in the Reproduction of Writings, Drawings, and other
Delineations.
I, DAVID GESTETNER of 70 and 71 Chiswell Street in the City of London, Manu-
facturer, 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 invention has for its object improvements upon an invention for which I obtained
Letters Patent dated June 3, 1881, No. 2450.
Heretofore the perforating wheels of "cyclostyle" pens have been mounted on an
axis projecting from the side of the stem or holder, by which construction it was
requisite that the pen, when in use, should be held in such manner that the perforating
wheel should be to the right of the stem or holder and with its periphery moving in
planes running more or less nearly from top to bottom of the paper. When such a
pen is otherwise held the writing is liable to be faulty and the stencil paper to be torn,
in addition to which, the use of such pen is somewhat restricted, as few but accustomed
hands can use it successfully.
Now I have discovered that if the "cyclostyle" wheel is mounted on the stem or
holder in such a position that the periphery thereof shall, when the pen is in use,
move in planes running more or less nearly in line with the lines of writing, and more
or less nearly vertically of the paper, much greater freedom is obtained in the use of
the "cyclostyle" pen, and better results are consequently obtained.
In the accompanying drawings I have illustrated two forms in which I carry my
present invention into effect.
The form I prefer to employ is represented at Figures 1 and 2, which are two views
of a "cyclostyle" pen, drawn to the natural size, and Figure 3, which is a view of
part thereof drawn to an enlarged scale.
Figure 4 is a view of a modified form of "cyclostyle" pen drawn to the natural
size and Figure 5 is a view of part thereof drawn to an enlarged scale.
In all the Figures like parts are indicated by similar letters of reference.
a represents the "cyclostyle" wheel and 6 the stem or holder.

page_text: In the form shown at Figures 1, 2, 3 the wheel a is carried by a fitting c, which is
shaped to imitate an ordinary barrel pen; this fitting has its point e bent at an
angle somewhat downwards, and the wheel a is mounted on a stud or axis fixed in
such bent point c¹ and standing upwards therefrom. By this construction of pen
the right position in which to use the same is indicated by the shape of the
fitting c.
In the form shown at Figures 4 and 5 the "cyclostyle" wheel a is mounted on a
stud or pin c² fixed centrally in the end of the holder b, so that the axis of the wheel a
is coincident with the longitudinal axis of the stem or holder b. By this construction
the pen can be held in any position in the hand but the angle in which it is held in
relation to the paper, when in use, requires to be more acute than when employing
the form of pen shown at Figures 1. 2. 3. The dotted lines D indicate the
stencil paper, the pen being used at about the angle shown in relation to the
paper.
I would here remark that the forms of holder and fitting may be varied without
departing from the peculiar character of my invention.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is :-
In "cyclostyle" pens, mounting the perforating wheel in such relation to its stem
or holder that the said wheel, when the pen is in use, shall be caused to work in planes
extending across the paper and more or less nearly in line with the lines of writing
substantially as herein shown and described.
DAVID GESTETNER.
By Harris & Mills,
23, Southampton Buildings,
Agents.