Improvements in Dies for Making Thimble Pins.
Year: 1889

page_text: Date of Application, 16th Aug., 1889
Complete Specification Left. 16th Nov., 1889-Accepted, 11th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Dies for Making Thimble Pins.
JOSEPH GIMSON and CHARLES CHALLINOR, Fenton, Stoke-on-Trent, in the County
of Stafford, Manufacturers, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to dies for making thimble pins; and our said invention has
for its object an improved method of heating same.
Thimble pins for supporting pottery ware whilst being fired, are usually made in a
number of dies, each die bringing up the blank nearer to the correct form. In making
the blanks, it is necessary to heat the die to prevent the clay from adhering to it. The
present method of heating said dies, is by placing them over a fire until they are as
hot as it is practicable to use them, so that the greatest number of blanks may be
made out of them before they are cold.
The principal disadvantages of this method, are the loss of time through having to
change the dies so often, and their liability to fracture through being overheated, and
through unequal expansion.
My invention consists in constructing the dies with suitable spaces in or through
the block, and heating them with steam.
+1
1
L 1000
BILLINGTON & NEWTON,
Potteries Patent Agency, Longport, Staffordshire.
COMPLETE SPECIFICATION.
Improvements in Dies for Making Thimble Pins.
JOSEPH GIMSON and CHARLES CHALLINOR both of Fenton, Stoke on Trent, County
of Staffordshire Manufacturers, 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:-—
Our Invention consists in constructing dies for making thimble pins in such a
manner that by their use a great deal of time is saved, and a much better "pin blank
formed.
It is well known in the pottery districts that "thimble pins" used for supporting
pottery ware whilst being fired are usually made in "die blocks attached to a press.
Before commencing to use the "die blocks which are made of cast metal or the like,
for stamping the "thimble pin blanks, it was found necessary to heat the same in an
oven or fire to prevent the clay or composition from which the "thimble pins" are
stamped from adhering to the die block. It will be understood that after removing
the die block from the fire or other heating agent and while in use, the said die blocks
gradually become cold, so that only a limited number of "thimble pin blanks could be
made with each, thus necessitating the frequent substitution of a "hot die" for the
cool one, the time thus occupied in changing the "die blocks" is wasted, more than
that, the "die blocks" are liable to fracture by overheating and unequal expansion.
The serious defects above enumerated are entirely obviated by this "improved die
block," being made of cast iron or other suitable material in such a manner that steam
or other beating agents are continuously conveyed through a pipe or pipes into the
said "die blocks while at work, which circulates through passages, channels or
apertures formed in or through the said "die blocks," a pipe or pipes being also con-
nected to some convenient part of the "die block" to carry off the exhaust steam, the
number of "thimble pin blanks" formed by each "die block "being regulated by the
size of such block.

page_text: In order that our Invention may be more readily understood and explained in
detail we have hereunto annexed a sheet of drawings on which letters of reference are
marked on corresponding parts on all the Figs. alike.
DESCRIPTION OF DRAWINGS.
Fig. 1. is a side elevation of the ordinary "thimble pin die block," made of cast
metal or like material shewing in dotted lines the configuration of the "thimble pin
dies," all of which are similar in form.
"
Fig. 2 is a plan of our "improved die block' as made in cast metal with nozzles
for connecting steam supply and exhaust pipes, the steam passages being shewn in
dotted lines.
Fig. 3 is a side elevation.
Fig. 4 is a view of that end of the "die block" to which the nozzles are attached.
Fig. 5 is a view of the back end, on which the steam passages or channels are
marked in dotted lines.
Fig. 6 is an end view of the body of the "die block" shewing the steam passages,
and the shape of the dies, which is the same as shewn at Fig. 1.
Fig. 7 is a plan view of the face of the "die block."
Fig. 8 is a side elevation of a "thimble pin blank
Fig. 9 is a plan view, and
Fig. 10 an inverted plan view of same.
"
"
as stamped.
In these views a is the body of the "die block" in which the forms 6 of the
"thimble pins
are formed, the die block as shewn at Fig. 1 is first made sufficiently.
hot by a fire or other heating agent, and is then taken to the press to which it is con-
nected by the stalk c in any suitable way, but after being used a few times becomes
cool, and another "warm die" has to be substituted, the frequent changing of the
dies causing a waste of time, besides which each "die block is liable to be fractured
by overheating or unequal expansion as herein before mentioned.
وو
"
In our "improved die block," which is fitted to the press in the ordinary way we
form passages d of any convenient shape and size, through which steam or other
heating agent is caused to flow or pass, the supply being attached to one nozzle e and
the exhaust pipe to the other nozzlo e², covers f and 2 are attached to the "die
block"
as shewn at Figs. 2 and 3 by bolts and nuts, or by other suitable means.
When the parts a, fand f2 composing the "die block are attached to the press,
the steam and exhaust pipes connected to the nozzles e and e² respectively, steam or
other heating agent is then caused to travel or pass through the nozzle e and channels d,
and the press set in motion to stamp the "thimble pins" of the form shewn at Fig. 8,
the steam after passing through the various passages d returns to the front end f2 and
out through the nozzle e² into the exhaust pipe, thus it will be seen that as long as
the steam is permitted to flow into and through the passages in the "die block," the
said "die block can be used for stamping out the "thimble pins."
"
Having now particulary described and ascertained the nature of
Invention, and in what manner the same is to be performed, we declare that what
our said
we claim is;—
The principle of constructing a "die block" of cast metal or other suitable materials
to be used for stamping out of clay, composition or the like "thimble pins" or
"thimble pin blanks" somewhat of the form shewn at Fig. 8 of the drawings
annexed, and in, or through which said "die blocks" one or more channels or passages
of any convenient shape and size are formed, for the purpose of steam or other heating
agent to flow or pass through whilst in use, so as to keep the said "thimble pin die
block," sufficiently heated, for the purpose and in the manner herein substantially
described, set forth and illustrated on the accompanying drawings.
Dated this 15th day of November 1889
BILLINGTON & NEWTON,
Agents for the Applicants.