CERTAIN IMPROVEMENTS IN THE MANUFACTURE OF POTTERY
Year: 1853

page_text: LETTERS PATENT to Henri Joseph D'Huart, of Longwy, in the
Empire of France, and of 16, Castle Street, Holborn, (City),
London, for the Invention of "CERTAIN IMPROVEMENTS IN THE
MANUFACTURE OF POTTERY."
Sealed the 14th January 1854, and dated the 15th July 1858.
PROVISIONAL SPECIFICATION left by the said Henri Joseph
D'Huart at the Office of the Commissioners of Patents, 'with
his Petition, on the 15th July 1853..
I, HENRI JOSEPH D'HUART, of Longwy, in the Empire of France,
and of 16, Castle Street, Holborn (City), London, do hereby declare
the nature of the said Invention for "CERTAIN IMPROVEMENTS IN THE
MANUFACTURE OF POTTERY" to be as follows, viz. :—
No 1, shows a plate of wood serving for the base of the machine.
No 2, shows a plate of sheet iron, in which are placed openings
furnished with steel journals.
No 3, represents a support of iron connecting the cross piece N° 4,
with the plate N° 2.

page_text: No 4, shows a cross piece, at one extremity of which the axle B,
works.
No 5, represents a support, at the extremity of which the pistons are
fixed; the employment of these pistons forms the chief part of my
Invention. The piston is of just the capacity inside of the piece to be
moulded; it is fixed upon a steel or copper plate projecting about
half an inch, and regulating exactly the interior dimension of the
article. These pistons are opened with hinges to afford means for
placing and removing the articles..
N° 6,. is the axle fixed to a wheel serving to give the axle shaft
bearing the moulds a to and fro movement.
No 7, is the crank, and N° 8, the rod, by which the movement is
communicated.
No 9, shows the inode by which the shaft N° 10, is connected to the
rod No 8, it being allowed to turn in a journal likewise.
No 10, is the axle shaft; and,
No 11, is a piece which communicates to the axle and the mould
which it supports a rotatory movement.
No 12, indicates an iron support with an opening in the centre, &
bearing the driving wheel N° 13, put in motion by any suitable means,
& communicating its motion of rotation to the axle shaft Nº 10.
No 14, is a receptacle in the moulds are successively placed.
No 15, is the piston; this piston is penetrated by a. small tube by
which a mixture of water & slip flows for facilitating the moulding.
No 16, represents the funnel containing water placed over the tube.
No 17, is a small spring which steadies the driving shaft, &c.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henri Joseph D'Huart in the Great Seal Patent
Office, on the 14th January 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, 3
HENRI JOSEPH D'HUART, of Longwy, in the Empire of France, and of
No. 16, Castle Street, Holborn, City, London, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of July, in the year of
our Lord One thousand eight hundred and fifty-three, in the seven-
teenth
year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Henri Joseph D'Huart, Her special licence
that I, the said Henri Joseph D'Huart, my executors, administrators,
and assigns, or such others as I, the said Henri Joseph D'Huart, 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
"CERTAIN IMPROVEMENTS IN THE MANUFACTURE OF POTTERY," upon the
condition (amongst others) that I, the said Henri Joseph D'Huart,
by an instrument in writing under my hand and seal, should parti-
cularly 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.
NOW KNOW YE, that I, the said Henri Joseph D'Huart, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement (that is to say):
The improvements I have introduced in the manufacture of earthen-
ware and pottery ware, china, porcelain, &, consist in the applica-
tion of a new machine of my invention for moulding the said articles.
This machine is made to do the work which is at present performed
by a class of working potters called moulders or turners. On the
annexed Drawing 1, represents a table of wood which firmly unites all
the pieces of the machine; 2, is a cast iron table with openings for
steel bearings. This table has to keep all the vertical shafts of the
machine that pass through it in a vertical position. 3, is a cast iron
upright which joins the cross-shaped piece 4, with the table 2. 4,
denotes a piece in the shape of a cross, through one extremity of which
passes the turning shaft B, which runs in steel collars, and is thus kept

page_text: A
in a vertical position. 5, represents an upright, at whose extremity the
movements, callipers, or sweeps are fastened. The principal part of
my Invention consists in the application of these callipers or sweeps.
The sweep has the exact contour of the interior of the piece that has to
be moulded; this contour is formed by the edge of a steel or copper
sheet fastened to and projecting over the body part of the sweep by
about inch. These sweeps vary according to the shape of the
articles to be moulded, and they are in parts hinged together at con-
venient points, so that they may be lifted out of the piece by means of
à lever and rod. In cases where the interior of the piece is bulging
this sweep may be adjusted as required by means of a set screw.
small pipe descends in the centre line of the sweep, carrying at its
upper end a funnel which contains a liquid for moistening the paste.
In the manufacture of all those small picces whose insides form regular
curves I let the sweep turn, instead of the shaft which carries the
moulds; for this purpose I fix upon the axle of the sweep a pulley,
which is driven by a strap from the large drum of the machine. The
shaft carrying the moulds continues its up and down motion in order to
bring the mould up to the sweep. 6, shews the shaft, which is driven
by a wheel, and serves to give to the shaft carrying the moulds a
reciprocating motion. This motion may also, if preferred, be, given
by any other means. 7, represents the crank, and 8, the connecting
rod, by means of which the reciprocating motion is imparted to the
wheel of the lathe. 9, shews the manner in which the ends of the
connecting rod and the lathe shaft are joined. This connexion is made,
as is seen, by means of a swivel fork that allows the connecting rod to
assume its different positions, and the lathe shaft to turn independently
of the swivel. 10, is the lathe shaft. 11, is a collar by which the
driving pulley 18, which slides on the shaft 10, is thrown into gear.
This takes place when the collar is at C, when the driving pulley takes
hold of two pins D, E, on the turning plate 14, which turns loose.on
the shaft 10. At the same time the sweep presses on the paste, and
the rotation of the mould produces the exact shape of the article.* 12,
is an iron bracket with an opening in the middle for supporting the
strain of the driving pulley on the shaft. 13, is the driving pulley,

page_text: which may be driven in any way. This driving pulley turns the lathe
shaft. 14, is a plate or box in which the moulds are placed succes-
sively. 15, are the callipers or sweeps which carry, as I have stated
above, a small tube for the passage of a mixture of water and paste
which facilitates the moulding operation. 16, represents the funnel at
the top of the tube just named. 17, is a little helical spring, which has
to facilitate the throwing in gear of the pulley, and to prevent it from
shaking. This machine is worked as follows:-An apprentice brings
the paste or clay into the shop and cuts off the lumps required for
forming the article; a second apprentice polishes these pieces and puts
them near the moulds of the first, for which purpose all the old moulds
may be used; a third apprentice has nothing to do but to take the
moulds thus prepared and to place them upon the plate B. At the
same time the crank brings up the mould under the sweep, the pulley
is thrown into gear, the shaft turns, and the piece is swept over by the
Sweep.
A fourth apprentice seizes the mould when it comes down and
puts it on the plate A. Before the plate A, is a workman who polishes
the pieces with horn or slate, takes them off, and puts them upon a
board. When this board is covered with pieces a fifth apprentice
carries it away. The machine is driven by any motive power, and by
means of straps.
I claim as my Invention the application of callipers or sweeps in the
manufacture of any kind of article in ceramic clay, such callipers or
sweeps, as I have described above, being fixed or having a rotatory
motion, and the combined application of these sweeps with the up and
down and intermitting rotatory motion of the moulds, or with rotatory
motion only.
In witness whereof, I, the said Henri Joseph D'Huart, have here-
unto set my hand and seal, this Twelfth day of January, in the
year of our Lord One thousand eight hundred and fifty-four.
LI
T D'UTILADI
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(1.5.)