IMPROVEMENTS IN MAKING MOULDS FOR CASTING RAILWAY CHAIRS AND OTHER ARTICLES
Year: 1856

page_text: LETTERS PATENT to Paul Prince, of Derby, in the County of Derby, for
the Invention of "IMPROVEMENTS IN MAKING MOULDS FOR CASTING RAILWAY
CHAIRS AND OTHER ARTICLES."
Sealed the 3rd October 1856, and dated the 10th July 1856.
PROVISIONAL SPECIFICATION left by the said Paul Prince at the Office
of the Commissioners of Patents, with his Petition, on the 10th July 1856.
I, PAUL PRINCE, of Derby, in the County of Derby, do hereby declare the
nature of the Invention for "IMPROVEMENTS IN MAKING MOULDS FOR CASTING
RAILWAY CHAIRS AND OTHER ARTICLES," to be as follows:-
The Invention consists of attaching any convenient number of patterns of
the articles to be moulded to a cast-iron or other turning-over plate, part or -
parts of which plate may be joined to the other part by hinge joints, or other-
wise, to facilitate certain portions of the patterns leaving the mould. The
turning-over plate with the patterns is attached to one end of a horizontal
lever, having at its fulcrum a universal joint or hinge, which allows the lever
to be moved horizontally, vertically, and about its own axis; on the other end
of the lever is a counterbalance to the weight of the turning-over plate and
patterns, and as much of the moulding box and sand as is desirable. The
moulding bench is arranged round the fulcrum on which the lever acts, its
diameter corresponding to the length of lever.
The operation of moulding is as follows:-The turning-over plate, with
patterns attached, being fixed on the end of the lever, is caused to be sus-
pended over the circular moulding bench by the counterbalance acting at the
other end of the lever. A moulding box is placed on the plate, and fastened

page_text: to it at each end of the box by hooks attached to the lever; the sand is then
filled in about the patterns to form the mould, the box is next raised from the
bench, turned over, and rested again on the bench, the centre of motion being
the fulcrum of the lever. The patterns are withdrawn from the mould by the
operator first unhooking and raising that part of the turning-over plate con-
nected by a joint or otherwise, and to which those portions of the patterns are
attached which require to be withdrawn by that means, and then unhooking
the other part, and carefully guiding the ascent of the other parts of the
patterns from the mould. The plate and patterns are then turned over again
for the next operation. The top box or cover is moulded on a plate, which is
the exact counterpart of the turning-over plate on its general surface, but also
having any projections, indentations, or other formations which may be required
on that side of the mould.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Paul Prince in the Great Seal Patent Office on the
10th January 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PAUL
PRINCE, of Derby, in the County of Derby, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent bearing date the Tenth day of July, in the year of our Lord One
thousand eight hundred and fifty-six, in the twentieth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said Paul
Prince, Her special licence, that I, the said Paul Prince, my executors,
administrators, and assigns, or such others as I, the said Paul Prince, my
executors, administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and Isle
of Man, an Invention for "IMPROVEMENTS IN MAKING MOULDS FOR CASTING
RAILWAY CHAIRS AND OTHER ARTICLES," upon the condition (amongst others)
that I, the said Paul Prince, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed in
the Great Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Paul Prince, do hereby declare the
nature of the said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
thereof, that is to say:--
The Invention consists of attaching any convenient number of patterns of
railway chairs or other articles to a "turn-over plate," part or parts of which
may be connected by hinge joints or slides, to facilitate certain portions of the
patterns leaving the mould. The turn-over plate with the patterns is fixed or
attached by joints on one end of a bar, which bar, at a convenient point in its
length, rests on a bearing joint or hinge, constructed to admit of the bar being
moved about its own axis, vertically and laterally, perpendicular to the centre
of motion. On the other end of the bar is placed a counterpoise or weight,
to balance as much of the patterns and turn-over plate as is required. A
circular moulding bench is recommended, the centre of it to be the point on
which the bar rests, the turn-over plate and patterns extending to and
corresponding with it.
The mode of moulding is as follows:-The turn-over plate and patterns
being rested on the moulding bench, a moulding box is placed thereon and
fastened to it by hooks, which are attached to the bar; the sand is then filled
in and rammed about the patterns to form the mould; the box is next rolled
over, a curved rib being cast on its side for that purpose. The patterns are
withdrawn from the mould by the operator first unhooking and raising that
part of the turn-over plate, connected by joints or otherwise, to the height
required, then unhooking the other part and raising the whole from the mould,
the centre on which the bar rests acting as a steady or guide to the operation.
The top box or cover is moulded on a plate, which is the exact counterpart of
the turning-over plate on its general surface, but also having any projections,
indentations, or other formations, which may be required on that side of the
mould.
DESCRIPTION OF THE DRAWINGS.
Figure 1: A, A, is a circular moulding bench, adapted for fifteen boxes (but
this number may be varied by circumstances).
Figure 2: b, b, is a jointed turn-over plate, on which the patterns C, C, are
fixed; D is a bar, resting on a centre or bearing at E, and on which bar the
turn-over plate and patterns are connected by sliding or hinge joints at F, F;
G, G, shewn in Figure 1 and Figure 2, are joints, to cause the patterns to
collapse, when being raised from the mould to admit of the parts II, H', being
withdrawn in the direction of their respective curves; I is a stud or pin
attached to the moulding box, corresponding to the centre of curve of the

page_text: "
part H; and J is a plate, attached to the turn-over plate at K, and resting on
the stud I; L is a stud, attached to the bar D, on which the part M slides; the
part M is connected by joints to the the links N, N, the patterns are thus kept
in true position during their withdrawal from the mould; O is a counterpoise
to the weight of the patterns, &c.; P, P, are hooks, attached to the bar D,
to hold the moulding box to the bar when being turned over; Q is a piece,
connected by a joint at R, 'to form a projection over the lower table of the rail
when required (and may be connected at its lower end by a joint to a rod,
which connects and actuates the hooks to fasten the moulding box, not shewn
in the Drawing).
Figure 3: S, S', are the two parts of a pattern, connected by a joint at T;
the part S being raised from the mould first by the handle U; the part S is
raised with the bar being fixed to it.
Figure 4 is Figure 2 turned over.
Figure 5 is Figure 3 turned over.
Other forms of chairs and other, articles may require a different arrange-
ment of joints for connecting the different portions, as also a different
arrangement may be given to the forms here shewn; I, however, do not, con-
fine myself to the form or arrangements of the parts shown, but what I claim
as my Invention is,―
First, the attaching of patterns and turn-over plate to a bár, which bar,
resting on a bearing joint or hinge at a convenient point in its length, acts as
a steady or guide to the patterns on their withdrawal from the mould; also
the application of a counterpoise to the weight of the patterns and turn-over
plate.
Second, the arrangement of the moulding table round the centre or
bearing, on which the lever attached to the pattern or turn-over plate rests.
Third, the connecting by hinge joints different portions of turn-over plates,
on which patterns for moulding are fixed.
In witness whereof, I, the said Paul Prince, have hereunto set my
hand and seal, this Ninth day of January, in the year of our Lord
One thousand eight hundred and fifty-seven.
Witness,
S. CARPMAEL.
PAUL PRINCE. (L.S.)