AN IMPROVED INKING PAD FOR RUBBER STAMPS AND TYPE
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
HAROLD SAVAGE of the firm known as The London Rubber Printing Company
of 33, Cheapside, London, Rubber Stamp Manufacturers &c. do hereby declare the
nature of his Invention for AN IMPROVED INKING PAD FOR RUBBER STAMPS
AND TYPE, to be as follows:-
This Invention relates to an improvement in the making of inking pads for
rubber and other stamps, differing from the kinds of pads now in usc, by not
becoming sticky. or soft, and by permanently giving off color, without the need of
supplying color or moisture whilst in use. This pad will give off color for
12 months or more in any temperature and does not deteriorate by keeping.
The pad consists of a solid block of felt (or other similar material,) saturated with
aniline (or other color), thoroughly dried and covered with smooth cloth.
A mixture consisting of 1 part water 1 part aniline (or other color,) 3 parts
chemically pure glycerine and part glue or gelatine, is run into a box or other
suitable recepticle, and the prepared felt block is placed on the top of this mixture
before it has set, when set, the felt block is slightly moistened with: puro glycerine,
this softens the color in the block, and it will now "give off." The supply of color
and moisture is maintained in the felt from the mixturo at the bottom.
The felt block and glycerine absorbing a sufficient amount of moisture from the
air to enable all the color in the pad to be used up.
:

page_text: HAROLD SAVAGE, of The London Rubber Printing Co., Rubber Stamp Manu-
facturers 33 Cheapside, London, E.C. I do hereby declare the nature of my
Invention for AN IMPROVED INKING PAD FOR RUBBER STAMPS AND TYPE and in
what manner the same is to be performed, to be particularly described and
. ascertained in and by the following statement :-
This Invention relates to improvements in the manufacture of inking pads for
rubber stamps, type &c.
For the purpose of my Invention, I take felt, or similar porous material of a
suitable thickness, and cut it into pieces of a size to suit the boxes it is intended to
be used in.
These pieces are steeped in a mixture of one part aniline of the required color,
disolved in 2 parts of boiling water, when saturated the pieces are removed from
the mixture, and allowed to become quite dry, after which they may be covered
with fine cloth, so as to present a smooth surface. Disolve 2 parts aniline, in
3 parts water at a gentle heat, when disolved add 4 parts glycerine and 1 part
gelatine, the whole must be well stired, care being taken that the mixture does not
boil temperature should not exceed 200. F. continue stiring untill the gelatine is
disolved, the mixture may then be run into the boxes. Before the mixture is quite
cold, place the prepared felt block-before described, on top, pressing it down
slightly into the mixture, so as to ensure a firm bed, when cold the surface of the
prepared block must be slightly moistned with glycerine, or glycerine and color
the pad will then give off color: if the pads are required for export, or stock, it will
be found better not to moisten the surface untill the pad is required for use.
Any color may be made from aniline as described. Black may be mado as
follows:-
The felt is saturated in a solution of negrosin 1 part, disolved in water 2 parts,
dried and covered as before described.
Into suitable boxes place a mixture consisting of:-8 parts gas or lamp black,
ground in glycerine: 2 parts negrosin disolved in 2 parts water. Add part
glycerine and 1 part gelatine disolved at a gentle heat, and mixed as before
described place the block on top, and moisten with negrosin 1 part, disolved in
glycerine 2 parts.
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 :-
The improved inking pad, consisting of a pad of felt or porus material charged
with color and moistned with glycerine, and resting on a mixture of glycerine and
color substantially as above described.
Dated this Sixteenth day of August 1884.