Apparatus for Marking or Perforating Documents for the Detection of Forgery.
Year: 1891

page_text: Date of Application, 5th Dec., 1891
Complete Specification Left, 5th Sept., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
Apparatus for Marking or Perforating Documents for the Detection
of Forgery.
I CHARLOTTE HEATH of 3 Canonbury Square, Islington in the County of
London Married Woman do hereby declare the nature of this invention to be as
follows:-
I form a series of concentric rings preferably of metal, moving round a central
point independently of each other and kept in position by a plate on the top edges.
On the upper edges I cut grooves at intervals radiating from the centre each
groove is marked with a letter or figure, on the plate above-mentioned I mount a
pawl like a flute key one end of which engages the grooves in the edges of the
rings, the number of positions thus secured vary with the number of rings and
their combinations. On the under edges of these rings I fix points for perforating
or designs for printing the deeds, the relative positions of these perforations or
designs are governed by the positions of the slots on the upper edges to each other.
December 5th 1891.
CHARLOTTE HEATH.
COMPLETE SPECIFICATION.
Apparatus for Marking or Perforating Documents for the Detection
of Forgery.
I, CHARLOTTE HEATH of 3 Canonbury Square, Islington in the County of
London, Married Woman 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 consists in apparatus for marking or perforating documents for the
detection of forgery and consists of a combination of marking or perforating
devices so combined that their relative positions can be altered to make marks or
perforations in any determined positions relatively to each other so that on the
receipt of a document so marked or perforated the comparison of the relative
positions of the said marks or perforations thereon or therein will enable the
receiver to ascertain whether the document is genuine or not.
I will describe with reference to the accompanying drawings what I consider the
most convenient form of construction of an apparatus according to my invention.
Figure 1 shews in elevation the apparatus and part of a press by which it is
applied in making the marks or perforations.
Figure 2 is a plan of the upper side.
Figure 3 is a plan of the underside.
Figure 4 is a transverse section and
a b and c are concentric
Figure 5 is an enlarged section of a part thereof shewing one of the punches.
I have shewn punches for making perforations but it will be understood that
any other marking device can be used in place thereof.
rings fitted together and upon a central part d so that they can be rotated. They
are kept together by the step like formation shewn in Figure 4 and by a bar
secured to the central piece by the screw g. On the faces of these rings I cut at
intervals notches or grooves radiating from the centre so as to divide the faces of
the rings into divisions each of which is marked with a letter or figure. I also
[Prine Rd 1

page_text: provide catches or retainers by which when the rings are adjusted they are retained
in position. This is conveniently effected by centering on the pin h (carried by the
bar) catches, triggers or pawls i provided at one end with a thumbpiece and at the
other end with a turned down part for engaging in the notches or grooves in the rings.
In the faces of these rings I fix the punches,k for perforating or designs for
printing the documents the relative positions of these perforations or designs being
governed by the relative positions of the letters or figures on the rings to each
other. The punches preferably have each a spring push piece k for dislodging
the piece of the document cut out by the punch.
A great number of different combinations in the relative positions of the punches
can be made by moving the rings round (when they are released, by elevating, the
catches i) they being secured in their adjusted position by causing the said catches
to engage with the notch or groove in each ring which is brought beneath them.
The notches or grooves should of course be so arranged that the several notches
or grooves of each ring only form one radial line or a line corresponding to that in
which the turned down ends of the catches are situated.
In using the apparatus any relative position of the rings being adjusted so that
the catches secure the rings in that position the punches will have taken up
positions relatively to each other which are always the same for the same positions
of the rings as indicated by the letters figures or other indications marked on the
divisions of the rings as shewn in Figure 2 and if the person who is to receive the
document which has been perforated by the punches when so adjusted be advised
of the combinations of letters figures or markings adopted in perforating and he be
provided, with a similarly, perforated paper or if he be provided with a similar
apparatus he by adjusting that apparatus to the code letters advised by post or
telegraph can perforate a piece of paper and by comparing the perforations of this
piece of paper with the perforations on the document received ascertain whether
it is the genuine document, or not. The most convenient way of doing this is to
place the paper which he has perforated over the document on a transparent surface
and to facilitate this there may be a central punch (as at k³) in the apparatus
which punches a central hole which can be placed over a pin on the transparent
surface so that the paper, and the document can be adjusted conveniently by a
movement of rotation.
+
A convenient way of securing the device to the handle or press with which it is
to be used is by means of spring catches / centered to the boss m secured to the
handle or press and engaging with notches or a groove m³ in the said ring a.
There may be any convenient number of rings and punches or the like in the
apparatus the greater number of rings and punches or the like used the greater
will be the variety of combination which can be made:
Although I have described the punches as being carried by rings it will be.
evident that they may be carried by straight or partly circular bars but the rings
are I consider the most convenient form. It will be evident also that any suitable
catches may be employed for instance spring plungers engaging with holes in the
divisions of the rings.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is.―
Ist. An apparatus or device for detecting forgery in documents consisting of a
combination of punches or marking devices which can be relatively adjusted and
secured in their adjusted positions substantially as hereinbefore described.
2nd. An apparatus or device for detecting forgery in documents consisting of a
combination of punches or marking devices carried by rings which can be rotated
and so adjusted that any predetermined relative positions of the punches or marking
devices can be obtained and means for securing the rings in their adjusted positions
substantially as hereinbefore described.

page_text: 3rd. The apparatus for the purpose and constructed substantially as herein before
described and illustrated in the accompanying drawings.
Dated this 5th day of September 1892.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, W.C.