IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MOULDING BLUES AND BLACK LEADS INTO CAKES OR BLOCKS
Year: 1878

page_text: LETTERS PATENT to Robert Moss Collingham, of Kingston-on-Hull, in the
County of York, Mechanical Engineer, for the Invention of "IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR MOULDING BLUES AND BLACK LEADS INTO
CAKES OR BLOCKS."
Sealed the 21st March 1879, and dated the 10th October 1878.
PROVISIONAL SPECIFICATION left by the said Robert Moss Collingham
at the Office of the Commissioners of Patents on the 10th October 1878.
ROBERT Moss COLLINGHAM, of Kingston-on-Hull, in the County of York,
Mechanical Engineer. "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR
MOULDING BLUES AND BLACK LEADS INTO CAKES OR BLOCKS."
This Invention has for its object improvements in machinery or apparatus for
moulding blues and black leads into cakes or blocks.
For this purpose I provide a vertical vessel with suitable agitators. The material
to be operated upon is placed in this vessel and kept stirred by the agitators. The
lower part of the vessel is open and secured to a slide having an opening through it.
This slide is caused to move backwards and forwards on a suitable bed or moulding
table by cam mechanism which operates a bell-crank lever, one arm of which is
connected to the slide.
The bed or moulding table on which the slide travels is supported by springs,
and contains moulds or dies in which the material is moulded. A part of the
reciprocating slide acts as the top plate, and there are bottom plates or plungers
having an upward and downward movement imparted to them intermittently from
a suitable cam on the same shaft as the cam which operates the slide. The cam
which operates the bottom plates or plungers of the moulds may be a compound
cam made with removeable parts to be changed according to the size of cakes or
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page_text: blocks to be moulded. The slide is caused at the proper times to assume a position
in which its opening is over the moulds or dies when material to be moulded is
caused to pass out of the vessel carried by the slide into the moulds or dies wherein
it is compressed by the upward movement of the lower pressing plates or plungers.
When the moulding has been effected, the slide is caused to assume a position in
which the moulds are uncovered, and the lower pressing plates or plungers by a
further upward movement raise the moulded cakes or blocks out of the moulds or
dies into a position in which, on the return stroke of the slide, it will push them
over the surface of the mould table on to a suitable receptacle for removal as
required.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Robert Moss Collingham in the Great Seal Patent Office on the 8th
April 1879.
ROBERT Moss COLLINGHAM, of Kingston-on-Hull, in the County of York,
Mechanical Engineer. "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR
MOULDING BLUES AND BLACK LEADS INTO CAKES OR BLOCKS."
This Invention has for its object improvements in machinery or apparatus for
moulding blues and black leads into cakes or blocks.
For this purpose I provide a vertical vessel with suitable agitators. The material
to be operated upon is placed in this vessel and kept stirred by the agitators. The
lower part of the vessel is open and secured to a slide having an opening through it.
This slide is caused to move backwards and forwards on a suitable bed or moulding
table by cam mechanism which operates a bell-crank lever, one arm of which is
connected to the slide.
The bed or moulding table on which the slide travels is supported by springs, and
contains moulds or dies in which the material is moulded. A part of the recipro-
cating slide acts as the top plate, and there are bottom plates or plungers having an
upward and downward movement imparted to them intermittently from a suitable
cam on the same shaft as the cam which operates the slide. The cam which
operates the bottom plates or plungers of the moulds may be a compound cam
made with removeable parts to be changed according to the size of cakes or blocks
to be moulded. The slide is caused at the proper times to assume a position in
which its opening is over the moulds or dies when material to be moulded is caused
to pass out of the vessel, carried by the slide into the moulds or dies wherein it is
compressed by the upward movement of the lower pressing plates or plungers.
When the moulding has been effected, the slide is caused to assume a position in
which the moulds are uncovered, and the lower pressing plates or plungers by a
further upward movement raise the moulded cakes or blocks out of the moulds or
dies into a position in which, on the return stroke of the slide, it will push them
over the surface of the mould table on to a suitable receptacle for removal as
required.
The accompanying Sheet of Drawings shews a machine embodying my improve-
ments.
Fig. 1 being a plan, Fig. 2 an end elevation, and Figs. 3 and 4, two longitudinal
sections. The sectional view, Fig. 3, shows the machine at the time the material
to be moulded is being admitted into the dies, and Fig. 4 shews the positions of the
parts of the machine when the blocks or cakes are about to be delivered on to the
bed or table, the operation of moulding having been concluded.
The material to be moulded is placed in the hopper A from which it passes into
the cylindrical vessel B, the lower end of which is open and secured to the slide C,
which has an opening through it, forming a continuation of the said cylindrical
vessel. In this vessel B is revolving agitating apparatus D, having motion imparted
to it by a series of mitre wheels driven by a pulley from the main shaft of the
machine. One of the mitre wheels (E) is loose on the shaft F, which has a groove
cut in it, so that at any position on the shaft F, the mitre wheel E can be driven by
a sliding feather or key working in the said groove. The agitator goes to the
bottom of the vessel as shewn. The slide C rests on the bed or moulding table H
which is supported on the springs I. These springs keep the slide forced up against
the inverted slides J, attached to the main framing of the machine. The bed or
moulding table carries the moulds or dies N, in which work the bottom plates or
plungers N* which enter the moulds or dies from the bottom side. These plungers
form bottoms to the moulds, and have an upward and downward motion imparted
to them by the cam L, which acts on the ram M. The said ram and plungers fall
by their own weight, and the depth to which the plungers fall in the moulds is

page_text: regulated by moveable stops or distance pieces O. The cam L may be a compound
cam with moveable parts to be changed according to the size of the cakes or blocks
to be moulded. Upon the same shaft that carries the compound cam is another
cam P which works the bell-crank lever R, one end of which is connected by links
with the slide C, and gives to it and the vertical vessel B and mitre wheel E a
backward and forward motion upon the bed or moulding table H. The bed or
moulding table is kept from lateral movement by pins K passing into it and affixed
to the main frame. The holes into which the pins enter are sufficiently slack not
to interfere with the vertical action of the springs in keeping the bed or moulding
table pressed against the slide and V grooves. The power applied to the cam shaft
is from a series of spur wheels.
The operation of the machine is as follows:-
In Fig. 3, the cylindrical vessel is shewn over the moulds or dios, and the
material is being shaken into the moulds or dies by the action of the revolving
agitator. The filling of the moulds having been accomplished, the cam P then acts
on the bell-crank lever R, and moves the slide until its solid part C¹ is brought
over the tops of the moulds or dies. In this position the slide forms a lid or top to
the moulds or dies, and it remains in this position whilst the compound cam L
raises the plungers in the moulds or dies, and presses the material to the required
shape. This being donc, the plungers are slightly slacked back by the compound
cam. The other cam now moves the slide still further back until it entirely
uncovers the tops of the moulds or dies as shewn in Fig. 4, and whilst in this
position, the compound cam raises the plungers until level with the tops of the
moulds or dies. Along with the plungers the cakes or blocks are raised entirely out
of the moulds, and this being done, the cam P acting on the slide brings it forward
to the position shewn in Fig. 3, pushing with it the cakes or blocks on to the
platform S. The plungers are supported in the position level with the bed or
moulding table top, until the cakes or blocks have been pushed off them, when
they fall to the position for refilling the moulds.
Having described the nature of my said Invention, and explained in what manner
the same is to be or may be performed or carried into practical effect, I would have
it understood that I do not claim as of my Invention or the exclusive use of the
several mechanical parts hercin-before described or referred to when taken separately
and apart from the combination or application thereof, in manner and for tho
purposes hercin-above set forth, but what I consider to be novel and original, and
therefore claim as secured to me under the Letters Patent herein-before in part
recited, is the contracting and arranging machinery or apparatus for moulding
blues and black leads into cakes or blocks, substantially as herein-before described,
and shewn in the accompanying Drawings; and I also claim the combination in
such machinery of a vessel with open bottom and agitators, a slide having an
opening through it, and a bed or moulding table supported by springs and con-
taining moulds or dies, the whole arranged and operating, substantially as and for
the purpose specified.
In witness whereof, I, the said Robert Moss Collingham, have hereunto set
my hand and seal, this Seventh day of April, in the year of our Lord
11
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