IMPROVEMENTS IN AUTOGRAPHIC
Year: 1876

page_text: LETTERS PATENT to Thomas Deykin Clare, of Birmingham, in the County
of Warwick, Merchant, for the Invention of "IMPROVEMENTS IN AUTOGRAPHIC
"
Sooled the 20th February 1877, and dated the 24th August 1876.
PROVISIONAL SPECIFICATION left by the said Thomas Deykin Clare at the
Office of the Commissioners of Patents on the 24th August 1876.
THOMAS DEYKIN CLARE, of Birmingham, in the County of Warwick, Merchant.
IMPROVEMENTS IN AUTOGRAPHIC PRINTING."
This Invention refers to apparatus in which a stylus or holder contains a point
or needle for the purpose of perforating paper or other surface, and thus producing
a stencil plate from which prints may be multiplied The form of stylus hitherto
used has merely pierced the paper without leaving any mark to denote the line of
the device, and this Invention consists in so forming the stylus that the piercing
may be indicated by a line of colour or mark. With this view I form the stylus
grooved to receive the needle, and to the lower end of the stylus I attach a metal
point, which marks the paper in the direction in which the needle punctures, it
acting simultaneously with the needle.
For some descriptions of metal points I use a metallic or prepared paper, whilst
for lead or other soft metal points ordinary paper will suffice; or by another plan I
form a stylus similar to an ever pointed pencil, but with a chamber near the point,
which chamber is to contain graphite in a finely powdered state, or plastic colouring
matter of any suitable nature, either of which will coat the needle in its passage up
and down, and thus convey sufficient colour to the perforation made by the needle
to indicate the line of drawing or writing produced.
The motive power employed to work the needle may be electrical, atmospheric,
mechanical, or any other driving power capable of being adapted to the purpose
The stylus may if preferred be made of solid metal instead of being tipped with
metal for the purpose of marking, or in cases in which only a support or protector
for the needle is all that is wanted, a plain pointed stylus at one side the needle
in a groove may be employed, so as to form a guide or support to the hand of
the operator and preventing the needle from piercing the paper too far. Or I can
employ another mode of enabling the operator to observe the effect produced by
171

page_text: the perforations, by employing a sheet of carbon paper or other coloured surface
beneath the surface to be perforated, so that the colour of the under surface will be
seen through the upper one, and thus indicate the course of the perforations.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
tho said Thomas Deykin Clare in the Great Seal Patent Office on the 23rd
February 1877.
THOMAS DEYKIN CLARE, of Birmingham, in the County of Warwick, Merchant.
." IMPROVEMENTS IN AUTOGRAPHIC PRINTING
"
This Invention refers to apparatus in which a stylus or holder contains a point or
needle, for the purpose of perforating paper or other surface, and thus producing a
stencil plate from which prints may be multiplied.
.
The motive power employed to work the needle may be clectrical, atmospheric,
mechanical, or any other driving power capable of being adapted to the purpose. I
form the stylus or holder (a) Figure 1, with a groove or channel (b) to receive the
needle (c), and to the lower end of the stylus or holder (a) I attach a metal point (a)
which marks the paper in the direction in which the needle punctures, it acting
simultaneously with the needle.
For some descriptions of metal point I use a metallic or prepared paper, whilst
for lead or other soft metal points ordinary paper will suffice
The stylus may if preferred be made of solid metal, instead of being tipped with
metal for the purpose of marking.
In cases in which only a support or protector for the needle is wanted, a plain
pointed stylus holding at one side the needle as at (e) Figure 2, may be used. The
stylus forming a guide or support to the hand of the operator and preventing the
needle from piercing the paper too far. Or I form the stylus so that the piercing
may be indicated by a line of colour or mark, which may be produced by forming
a stylus similar to an ever pointed pencil, but with a chamber near the point, which
chamber is to contain graphite in a finely powdered state, or plastic colouring
matter of any suitable nature either of which will coat the needle in its passage up
and down, and thus convey sufficient colour to the perforation made by the needle
to indicate the line of drawing or writing produced. Or I can employ another mode
of enabling the operator to observe the effect produced by the perforations, by
employing a sheet of carbon paper or other coloured surface beneath the surface to
be perforated, so that the colour of the under surface will be seen through the
perforations in the upper one, and thus indicate the course of the perforations
Having thus described the object and nature of my said Invention, and the
manner in which the same is to be carried into effect, I claim without limiting
myself to these precise details the several improvements in apparatus for perforating
papers or other surfaces, substantially in manner as herein more fully set forth and
specified.
In witness whereof, I, the said Thomas Deykin Clare have hereunto set my
hand and seal, this Twenty-second day of February, in the year of our Lord
One thousand eight hundred and comand