Improvements in Machinery or Apparatus for the Manufacture of Potters' Seggars, Crucibles, and the like.
Year: 1885

page_text: Improvements in Machinery or Apparatus for the Manufacture
of Potters' Seggars, Crucibles, and the like.
I, JOHN GILL, of 5, St Michael's Square, Chapeltown Road, Leeds, in the County
of York, Engineer, do hereby declare the nature of said invention for "IMPROVE-
MENTS IN MACHINERY OR APPARATUS FOR THE MANUFACTURE OF POTTERS'
SEGGARS, CRUCIBLES, AND THE LIKE" to be as follows:-
My invention relates to machinery or apparatus for the manufacture of Potters'
Seggars for containing pottery while being baked; Crucibles and the like, and
consists: Firstly-of an annular part of a mould mounted on trunnions, and
carried by suitable frame-work. The interior of said annular part represents the
external configuration of, but somewhat deeper than the Seggar or other article
required to be made. Secondly: within the said annular part, I place a male part
which represents the interior figure of the seggar or other article required. This
male part is provided with a facing of india-rubber for preventing adhesion thereto
of the material under treatment, and also with a projecting part or flange which
forms the bottom of the mould. A portion of said projection is recessed into the
annular part in suchwise that together they form a matrix for the required seggar
or other article, which in process of formation is bottom upwards.
The mould is mounted in framework having a horizontal sliding movement on a
table provided therefor, and is capable, after receiving in a plastic state, the
necessary quantity of material for the formation of a Seggar or other article, of
being moved by suitable mechanism, such as a rack and gearing, so as to place the
mould in position for the action of a screw, hydraulic or other press upon the
plastic material, the head of the press being provided with a "form" corresponding
to the interior of the said annular part of the mould, and thus force the material
into the matrix, vents being provided for the escape of any surplus material. The
pressure being removed the mould is caused to slide backward to its former
position; the uppermost part of the newly formed Seggar or other article, being
sprinkled with dry sand or other similar material for preventing its adhesion to
a metallic or wooden receiving part which is next placed upon and secured to the
annular part of the mould, and the whole caused to make half a revolution on its.
trunnions.

page_text: The male part of the mould is then removed, the receiving part above referred
to is released from the mould, and it, together with the newly formed Seggar or
other article glides downwards from the mould and are received by a somewhat
over counterbalanced table, their weight causing the said table to descend clear of
the mould.
The receiving part together with the seggar or other article upon it, are next
removed to a convenient place for drying the latter.
The male part of the mould being now replaced, the whole turned back, and the
above operations repeated, the next Seggar or article required is produced.
W. LLOYD WISE,
Per F. J. Brougham,
Applicants Agent.
Improvements in Machinery or Apparatus for the Manufacture 1
of Potters' Seggars, Crucibles, and the like.
I, JOHN GILL, of 5 St Michael's Square, Chapeltown Road, Leeds, in the County
of York Engineer, 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:—
My invention relates to machinery or apparatus for the manufacture of Potters'
seggars for containing pottery while being baked, crucibles and the like, and
consists of a mould, the outer part of which is annular and mounted on trunnions
in suitable framework. The interior of the said annular part represents the
external configuration of, but is somewhat deeper than the seggar or article
required to be made, the said configuration may be circular, oval, rectangular or
otherwise. Within the said annular part is placed a male part or block which
represents the interior of the seggar or other article required. This male part or
block is faced with india-rubber or its equivalent for preventing adhesion thereto
of the material under treatment, and has a projecting part or flange which forms
the bottom of the mould. A portion of this flange is recessed into the annular
part, so that, combined they form a matrix for the required seggar or article, which
during its formation is bottom upwards.
The mould is so mounted in the framework above referred to, that it is capable
of a horizontal sliding movement upon a table provided therefor, and is first placed
in a suitable position thereon that plastic or other material may be placed therein,
after which it is moved by hand or otherwise to a position that pressure may be
applied thereto, by screw, hydraulic, or other means to force the material into the
matrix, vents being provided for the escape of surplus material and air.

page_text: "
The head of the press is provided with a "form" to suit the interior of the
annular part of the mould and for pressing upon the material under treatment.
On the pressure being removed, the mould is slid back to a position over a rising
and falling table. The uppermost part of the newly formed seggar or other article
is next sprinkled with dry sand or other similar material for preventing its
adhesion to a metallic or other kind of receiver, which is placed upon and secured
to the annular part of the mould, which is then caused to make half a revolution
on its trunnions, in other words, is turned "upside down." The male part of the
mould is then removed, and the metallic or other receiver released from the mould,
and rests upon the rising and falling table abovementioned, and the newly formed
seggar or other article glides or is caused to glide downwards, from the mould
upon the aforesaid receiver; their combined weight causes the rising and falling
table to descend until the seggar or other article is clear of the mould, after which
the receiver and the seggar thereon are removed to a convenient place for drying
the latter.
The annular part of the mould is next turned the contrary way up, the male
part or block replaced, and the above described operations repeated for the
manufacture of the next seggar or other article.
The accompanying drawings will more fully explain the process of manufacture.
Fig. 1, is a front elevation partly in section Fig. 2, is a side elevation, and
Fig. 3; a plan of a machine or apparatus comprising my invention,-a, is the
framework upon which is mounted (by preference) a screw press b, but a hydraulic
or other kind of press may be used. The base c of this press forms a table, and
has sliding parts c 1, c1, for the forked ends of the frame d, to slide upon, these
ends have bearings formed at d 1, d 1, for the reception of trunnions g 1, g 1, of
the annular part g, of the mould. At the other end of the frame d, is a rack d 2.-
e₁ is a pinion taking into the said rack.-e 1, the rack pinion shaft, and f, a handle,
also on the shaft e 1, by means of which the frame d, and the mould may be moved
to any required position.-h, is the male part or block representing the interior
figure of the article to be produced. This fits into the recess g 2, of the annular
part g, and is secured therein; the annular space between the said parts g, and h,
forms the matrix previously referred to;-i, is another part of the mould, its
periphery corresponding with the interior of the annular part g, and is fixed to the
head j, of the press.
The mould is first placed in the position indicated by the dotted lines g 3, Fig. 2,
plastic or other material is placed therein, the mould is then by means of the
handle f, placed under the centre of the press as shewn in Fig. 2, the head of which
is caused to descend by means of the hand or tiller wheel k, (or other motive power
may be used,) gearing l, m, and the screw n, and to force the said material into the
matrix, and thus form a seggar or 'other article as the case may be, after which,
upon the pressure being removed, the mould and the newly formed article are
moved into a position over the centre of the rising and falling table o, as shewn in
Fig. 4. This figure is partly in section and shews the mould in a contrary position
to that shewn in Fig. 2.
P, p, are counterweights for maintaining the table o, in its uppermost position;
this table may be easily moved a short distance downward to allow of the mould
being turned over, previous to which, dry sand or other non-adhesive material is
sprinkled over the newly formed article, and a cover q, is placed upon and secured
to the mould, when turning over takes place. The male or central block h, is
lifted from the other part g, by means of a windlass r, provided for the purpose.
The cover q, being now on the underside of the mould is released and allowed to
rest upon the table o, and receives the newly formed seggar or other object as it
glides from the mould, the preponderating weight now upon the table o, causes it
to descend and the newly formed object being clear of the mould is removed for
drying as herein before referred to.
The male part h, is then replaced and secured as before, the mould returned to
its former position, ready for the above described operations being repeated.

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim in machinery or apparatus for the manufacture of Potters' seggars crucibles
and the like is
1. The use of a mould consisting of an outer annular portion and an interior or
male die fitting together in the manner specified substantially as described and
shewn on the drawings.
2. Mounting a mould of the kind referred to in the previous claim, upon
trunnions substantially as and for the purpose herein set forth.
3. Receiving the newly formed object upon a balanced or counterweighted table
which descends gently as the object leaves the mould, and receives it without
shock substantially as described.
4. The improved machine or apparatus for the manufacture of Potters' seggars,
crucibles and the like, constructed, arranged and operating substantially as
described with reference to the drawings.
:
Dated this 28th day of September 1885.
Witness,
T. E. CRAVEN, C.E.,
Fellow Inst. Patent Agents,
24, Victoria Chambers,
South Parade, Leeds.
JOHN GILL.