Improvements in Inking Pads for Hand Stamps.
Year: 1889

page_text: Date of Application, 31st May, 1889
Complete Specification Left, 28th Feb., 1890-Accepted, 3rd May, 1890.
PROVISIONAL SPECIFICATION.
Improvements in Inking Pads for Hand Stamps.
We, HENRY BAUMGARTEN and GERTRUDE BAUMGARTEN both of 41 Everton Road,
Liverpool in the County of Lancaster, Stamp Manufacturers, do hereby declare the
nature of this invention to be as follows:-
This invention has for its object an inking pad for rubber, metal or other hand
stamps, which will continue to give an equal and proper amount of ink during
continuous or intermittent use for long intervals.
In place of simply saturating a cushion or anointing a cloth or band with the ink
we form a reservoir of ink below a pad and separate it from the pad by a perforated
metallic partition arranged so as to equally distribute the ink over the under surface
of the pad when required.
In carrying out our invention various modifications can be used. The form we
at present prefer when metallic stamps are used is to form a reservoir weighted or
otherwise of varnished wood, metal, or other material consisting of a box having a
'stoppered feed orifice below and open at top. This box is either provided or
stoppered with one or more strong springs to hold the perforated metal up, or one
or more annular or other shoulders forming abutments for the perforated metal to
rest upon. These shoulders can be a series of rings broken through. at intervals in
order that the ink may find its own level or they can be of other shapes or forms or
even simple projections arranged over the surface. If however springs be used a
single large volute spring or several small springs placed at intervals can be used.
Upon these springs or shoulders a perforated plate of some material not acted upon by
the ink is placed. With many kinds of ink iron or zinc is the best. This iron or
zinc is perforated with a large number of small holes preferably slightly conical
Fupwards to allow the ink to rise up. Above this plate we place a coarse felt or other
layer of fibrous material and above this preferably a few layers of finer woollen or
other cloth. Over them all we place another layer or layers of cloth extending over
the circular rim of the reservoir and over this press down a ring preferably of brass
either a simple ring cut from a large tube or brazed together, or a ring with an
internal shoulder extending over the cloth a little and formed by casting or otherwise.
This ring holds the cloth down tight on to the reservoir and forms a nice finish.
An orifice in the lower part of the reservoir admits of the ink being poured into the
latter whenever required, and a screw-stopper, cork, or other stopper fills the hole
hermetically at other times.
The mode of action is as follows. The various felts and cloths are well saturated
with the ink before being put into position. The ink is then filled into the reservoir
and the stopper inserted. It is now used as a stamping pad until such times as the ink
appears to be getting dry on the pad. The position of the pad is then momentarily
reversed, the ink runs through the numerous holes in the metal plate and again
saturates or partially saturates the felt and cloths. Where, however, springs are used
instead of shoulders in the box the pressing of the stamps hard down on to the pad
forces the ink up through the fine perforations against the pad and thus automatically
renews the supply of ink in the pad.
These pads are applicable for oleaginous as well as for aqueous inks. The reservoir
can be made of wood coated with a varnish insoluble in the ink or of metal or other
material impermeable to the ink. The stopper at the bottom can be provided with an
india-rubber or other washer to still further prevent all chance of the ink escaping.'
1... Dated this 30th day of May 1889.

page_text: 4
COMPLETE SPECIFICATION.
Improvements in Inking Pads for Hand Stamps.
We, HENRY BAUMGARTEN and GERTRUDE BAUMGARTEN, both of 41, Everton Road,
Liverpool, in the County of Lancaster, Stamp Manufacturers, do hereby declare the
nature of this invention and in what manner the same is to he performed, to be
particularly described and ascertained in and by the following statement :-
In ink pads for stamps, as hitherto commonly constructed, a cloth, band, or cushion
has been used, which was saturated or moistened with ink from time to time. This
arrangement was unsatisfactory, in that the pad supplied ink for comparatively few
impressions, and the supply was of a varying quantity or quality.
Now our invention has for its object an inking pad for rubber, metal, or other hand
stamps, which will continue to give an equal and proper amount of ink during con-
tinuous or intermittent use for long intervals.
In place of simply saturating a cushion or anointing a cloth or band with the ink,
we form a reservoir of ink below a pad, and separate it from the pad by a perforated
metallic partition, arranged so as to equally distribute the ink over the under surface
of the pad when required.
Referring to the drawings:-
:-
Figure 1 is a vertical section through the centre of a pad constructed according to
this invention.
Figure 2 is a plan of the base or stand, the metal plate and absorbent materials
being removed.
Figures 3 and 4 are corresponding views of a modification hereinafter described.
Referring first to Figures 1 and 2:-
A is a reservoir or box of varnished wood, metal, or other suitable material
formed in or attached to the base A' of the pad, which may be suitably weighted,
if desired, to give stability to the same. The bottom of the box, A, is furnished
with a threaded. feed orifice, in which is placed the screw stopper a, provided with
a suitable washer a¹, if necessary. A perforated metal plate B rests inside the box
above the surface of the ink on a suitable projection or projections, such as an annular
shoulder a² and rings a³, which are all preferably formed in one with the box. The
plate B is formed of some metal which is not corroded by the ink. Iron or zinc may
be used for many inks. The rings a³ are cut or broken away at places, as shown
at a', in such a manner that the ink which is fed through the feed hole has a free
passage to different parts of the metal plate B. The boss A2, which surround the
screw stopper a and which also serves to support the plate B, is likewise cut away,
as shown at one or more points for the same purpose.
The perforations 6 in the plate B are preferably of conical form as shown, being of
. less diameter at the bottom side of the plate, than they are at the top side. This con-
struction assists the ink to rise up through the plate B and spread itself over the
surface of the cushion above the said plate.
} .
Surmounting the plate B and resting thereon, is a cushion C of felt or other
spongy material, and above that are one or more layers of cloth C, which are of
finer and more impervious texture than the cushion C. The metal plate, and the
materials above described are prevented from slipping off the box by reason of lying
within its side walls. On top of all there is placed a piece of close grained felt
or fine cloth D, which is held upon the box by means of a preferably metal ring E.
The latter is placed over the outer rim of the box A, and grips the border of the
felt D between itself and the said rim. This ring may be of any suitable form in
. cross section, and it may be brazed or formed of a continuous piece. The ring holds
the cloth down tight on to the reservoir or box, and forms a nice finish.
In some cases we prefer to support the metal plate B.on one or more spiral, volute
or other springs instead of on solid projections. This construction is shown in
Figures 3 and 4. The spiral springs F preferably rest in holes F¹ formed in the

page_text: bottom of the box A. Three springs are employed in the pad shown in the drawing,
as being a convenient number.
The mode of action is as follows
The various felts and cloths are well saturated with the ink before being put into
position. The ink is then filled into the reservoir A and the stopper a inserted. The
pad may now be used as a stamping pad until such time as the ink appears to be
getting dry on the pad. The position of the pad is then momentarily reversed, the
ink runs through the numerous holes in the metal plate and again saturates or
partially saturates the felt and cloths. Where, however, springs are used instead of
shoulders in the box, the pressing of the stamps hard down on to the pad forces the
ink up through the fine perforations against the pad, and thus automatically renews
the supply of ink in the pad.
As an additional precaution, in order to prevent the ink from the reservoir leaking
past the edges of the plate B and the layers of material C C¹, we may sometimes
insert an elastic ring G of india rubber, leather or other suitable material below the
border of the plate B, as shown in Figures 1 and 3. The whole of the wooden
portion of the base with which the ink comes in contact may be treated with a
solution of shellac so as to prevent the ink from penetrating the wood.
These pads are applicable for oleaginous as well as for aqueous inks.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. A reservoir inking pad for hand stamps, consisting of a hollow stoppered base
serving as a reservoir for ink, a perforated plate supported upon suitable abutments
within the reservoir above the ink, one or more layers of fibrous pervious material
resting upon said plate, and a device such as a ring E, for holding the layers securely
in place, substantially as described.
2. In a reservoir inking pad for hand stamps, the combination of an ink reservoir,
a fibrous pervious pad, and a perforated plate supporting same, and itself supported
above the surface of the ink in the reservoir and so arranged that, by its own
elasticity or the elasticity of its supports, it shall be capable of yielding to heavy
pressure and thus forcing the ink through´ its pores into the pad above, substantially
as described.
Dated in 97th day of linhoun-- 1900
: 074
th day of February 1900.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.