An Improvement in Thimble Pins for Use in Placing Pottery Ware whilst being Fired.
Year: 1895

page_text: Date of Application, 15th Mar.. 1895
Complete Specification Left, 29th Nov., 1895-Accepted, 1st Feb., 1896
PROVISIONAL SPECIFICATION.
An Improvement in Thimble Pins for Use in Placing Pottery Ware
whilst being Fired.
ล
WILLIAM EDWARD MADDOCK 11 Furlong Place Burslem Staffordshire
Potters Manager do hereby declare the nature of this invention to be as
follows:-
This improvement consists in a thimble which will build & work with the
existing or first taper socketed thimble invented, which thimble goes through two
operations in manufacture, whilst this improvement only needs one owing to its
form of construction, which although a taper socketed is paralell part way down
the hole & suddenly contracted to fit at the bottom of the thimble. The hole is
then carried right through making an air point, so that when the mandril "which
makes the hole" is withdrawn, air can pass up into its place and it being paralell
down to where it is socketed, only needs air to follow it from the bottom. But in
the case of a thimble with a taper hole it requires air all over, or it sucks the sides
out of truth causing it to have to pass through the dies a second time to be
straightened out. And further on account of this improvement only touching at
the top and bottom of the socket, the thimbles do not stick together so much
during use in saggars or kilns filled with the fumes of glaze thereby saving a lot
from being broken in parting them for use a second time. And so that the thimble
shall be more readily brought to its bearing, there are guides left "either in the
hole or in any other way "which shall start at a slight taper at the top and
gradually thicken until they get to the shoulder but leaving a distance from the
sides of the thimble when socketed into one another. It is also constructed, that
the arm or pin may have its working edge either way up by reversing the dies.
And on account of this it may be used to greater advantage to suit the different
classes of ware. An instance is a plate which by placing the thimble upside down
you get the taper part at the top: consequently farther away from the edge of the
piece & allowing it to be placed the same distance of hold with a much shorter
armed thimble.
Dated this 14th day of March 1895.
WILLIAM EDWARD MADDOCK.
COMPLETE SPECIFICATION.
An Improvement in Thimble Pins for Use in Placing Pottery Ware
whilst being Fired.
WILLIAM EDWARD MADDOCK 11 Furlong Place Burslem Staffordshire
Potters Manager 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 improvement consists in a thimble or thimble pin which will build & work
with the existing or first taper socketed thimble invented which thimble goes
through 2 operations in manufacture whilst the improvement only needs to go
.

page_text: through one owing to its form of construction which although taper socketed is
(Fig. 2) paralell part way down the hole & suddenly contracted to fit at the
bottom of the thimble and owing to the paralell part, down to where it is socketed
it does not need air at the sides and the strength of the thimble is sufficient to
ensure it from sucking lengthways. But in the case of a thimble with a taper
(see Fig. 1) hole it requires air all over or, it sucks the sides out of truth & causes
it to have to pass through the dies a second time to be straightened out.
further on account of this improvement only touching (see A and B-Fig. 2) at
the top and bottom of the socket they (the thimbles) do not stick together so
much during use in sags filled with the fumes of glaze thereby saving a lot
from being bioken in parting for use again.
And
And so that the thimble shall be more readily brought to its bearing there are
guides see C-Fig. 3 and 4 left either in the hole or in any other way convenient
which shall start at slight taper at the top and gradually thicken down to the
shoulder see D Fig. 3 and 4 but leaving a slight distance from the sides of the
next thimble when socketed into one another.
The thimble has also at the shoulder another see E. Fig. 2 and 4 short paralell
which stops the fitting part (viz.) where the bottom of the next thimble comes)
from sucking in.
And also to enable the thinble to have an easy release from the upper die (in
making) it has a circular ridge see F. Fig. 2 and 3 or a number of circular ridges
or in other way convenient which shall, (in the die) cause a certain amount of
compressed air all over the top & helps it to leave.
It is also constructed that the arm or pin may have its working edge either way
up by reversing the dies see Fig. 5 & on account of this it may be used to greater
advantage see distance between G H Fig. 2 and GI-HI Fig. 5 to suit the
different classes of ware intended for. See W-piece of ware.
This principle is also applicable to either round square paralell socketed or any
other shape thimble or thimble pin.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
⚫claim is
1st. Paralell portion or portions in the thimble which prevent sucking. See I
and E. Fig. 2 and 4.
2nd. Guides left in the hole or in any other way convenient for the socketing
of one into the other. See C. Figs. 3 and 4.
3rd. Circular ridge or a number of circular ridges or ridges in any other form
to cause compressed air & help the thimble to leave the die. See F. Fig. 2
and 3.
4th. Reversed working edge enabling a bung of ware to take up less room see
Fig. 2 and 5 the gain being of an inch at each of the 3 points of support.
Dated this 28th day of November 1895.
WILLIAM EDWARD MADDOCK.