An Improved Method of Preparing Die Blocks of Needles, Points, Stamps, or Cutters for Marking of Soap Tablets and other Substances.
Year: 1893

page_text: Date of Application, 26th Jan., 1893
Complete Specification Left, 26th Oct., 1893-Accepted, 2nd Dec., 1893
PROVISIONAL SPECIFICATION.
An Improved Method of Preparing Die Blocks of Needles, Points,
Stamps, or Cutters for Marking of Soap Tablets and other
Substances.
We, GEORGE DUNCAN MACDOUGALD, of 3 Youngsdale Place, Analytical
Chemist, and JAMES STURROCK, of Seacraig, Cashier Dundee Advertiser Office,
both of Newport, in the County of Fife, N.B. do hereby declare the nature of this
invention to be as follows:-
This invention relates to an improved method of preparing die blocks of needles
points stamps or cutters for marking of soap tablets, and other substances.
For the purpose of our invention, we make a kind of box with a perfectly level
bottom preferably of glass. In this box, we arrange two cards at a distance apart,
said cards having been previously pricked or perforated to the required outline of
the device or mark required.
The needles or cutters to be used are passed through these prickings or
perforations to which they become bound, and are all knocked up to the level of
the glass bottom.
We have another box in which we have molten metal, or a compound, or alloy
of metal, or other suitable material, and we take the first named box and turn it
over, so that the heads of the needles or cutters i.e. the butt ends, can enter the
molten metal and so become cast in the metal as it cools.
The first named box is then taken away, and the cold metal with the needles or
cutters is removed from the metal box, or in some cases the metal box may be left
to strengthen the block this forms the die or matrix by which the soap or other
substance has to be pricked or punctured, and the needles or cutters so used we
purpose making with undulating, or with other shaped stems, from the point to
where they are inserted into the metal block, such undulations may be produced by
rubbing down, grinding, etching or otherwise, so as to form interstices, or reduced
surfaces, into which a lubricant for assisting the needles or cutters in and out of the
soap or other substance, can lodge.
ليمن
'
1000
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said George Duncan Macdougald and James Sturrock.
COMPLETE SPECIFICATION.
An Improved Method of Preparing Die Blocks of Needles, Points,
Stamps, or Cutters for Marking of Soap Tablets and other
Substances.
We, GEORGE DUNCAN MACDOUGALD, of 3 Youngsdale Place, Analytical
Chemist, and JAMES STURROCK, of Seacraig, Cashier Dundee Advertiser Office,
both of Newport, in the County of Fife, N.B. 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 :-
This invention relates to an improved method of preparing die blocks of needles
or points, stamps, or cutters for marking of soap tablets, and other substances.
For the purpose of our invention, we make a kind of box with a perfectly level
bottom preferably of glass. In this box, we arrange two cards at a distance apart,

page_text: said cards having been previously pricked or perforated to the required outline of
the device or mark desired.
The needles or cutters to be used are passed through these prickings or
perforations to which they become bound, and are all knocked up to the level of
the glass bottom.
We have another box in which we have molten metal, or a compound, or alloy
of metal, or other suitable material, and we take the first named box and turn it
over, so that the heads of the needles or cutters, i.e. the butt ends, can enter the
molten metal, and so become cast in the metal as it cools.
The first named box is then taken away, and the cold metal with the needles or
cutters is removed from the metal box, or in some cases the metal box may be left
to strengthen the block, this forms the. die or matrix by which the soap or other
substance has to be pricked, or punctured, and the needles or cutters so used we
purpose making with undulating or with other shaped stems from the point to where
they are inserted into the the metal block, such undulations may be produced by
rubbing-down, grinding, etching, or otherwise, so as to form interstices or reduced
surfaces, into which a lubricant for assisting the needles or cutters in and out of the
soap, or other substance, can lodge.
Our invention will be clearly understood by reference to the annexed drawings.
Figure 1 is a plan view of a box or frame, of which Figure 2 is an elevation.
It is composed of a bottom plate A four built up posts B, B, in fixed lengths, and
having a glass base. C. D, D, are cards perforated, as seen at Figure 1, with a
word, symbol, or device as desired. These cards are placed in position and held
rigidly by the screw nuts E, E.
Needles F, F, are passed into the perforations of the cards D, D, with their
points resting on the glass base C, and with the eye ends or shanks standing up
clear of the card. The nip of the needles in the perforations of the cards enable
the box to be turned upside down, and placed upon a ladle G, as at the sectional
view, Figure 3, in which ladle a quantity of soft metal is prepared in a fluid
I condition by gas flame, or otherwise to constitute a backing or block when cold, as
would be the case by extinguishing the flame, or by the removal of a flexible gas
tube from, the nozzle H. The block can then be shot out of the ladle or cup G,
and the needles withdrawn from the cards for use in a stamping press or machine
for piercing soap with a word, device, or mark corresponding to that to which the
needles were arranged.
The needles may be plain, smooth, or be irregularly surfaced, as at Figure 4, or
otherwise, the hollows or recesses serving to hold a lubricant which may be a soap
for easing the entry and withdrawal of the needles, and so prevent the soap
operated upon from cracking.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
The method of preparing pattern moulds or dies of needles, as herein described
and substantially as indicated in or by the annexed drawings for piercing purposes,
as set forth.
H. GARDNER,
*. Patent Agent, 166, Fleet Street, London,
Agent for the said George Duncan Macdougald and James Sturrock.