A New or Improved Portable Brick Making Machine.
Year: 1894

page_text: COMPLETE SPECIFICATION.
A New or Improved Portable Brick Making Machine.
I WALTER JOHN NEWTON TOMLINSON of 11 Buckingham Street Strand in
the County of London Architect 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 a new or improved portable brick making machine for
compressing dry and semi-dry clay and making bricks of suitable consistance in
order to produce after suitable treatment in a kiln a brick having sharp edges and
smooth surfaces.
The characteristic features of this machine are its portability and its simplicity
notwithstanding which a tremendous pressure is simultaneously exerted on the top
and on the bottom of the clay at one stroke of a lever hereinafter called the
operating lever.
In carrying my invention into practice I provide a frame consisting of two
uprights or standards bolted to any suitable wooden beam set in the ground.
Between the two frames and bolted thereto is arranged a mould table containing
two or more brick moulds and upon which can move to and fro a charger containing
the clay and fed from a hopper or shoot above required to fill the moulds, this
charger being actuated by a lever carrying a roller against which bears the outer
periphery of a cam mounted on the main shaft.
Within planed guides forming part of the frame slide up and down the two
blocks carrying the rams which enter the moulds simultaneously one set at the top
and the other set at the bottom thus compressing the clay between them to form
the brick.
The upper block or carrier is connected to a set of two levers or toggle jointed
to the operating lever pivotted to the top of the frame and actuated by a connecting
rod fixed at the bottom to the pin of a crank disc mounted on the main shaft aud
provided with a cam path bearing against the roller of a lever fulcrumed to an axis
carried by an extension of the frame and entering the lower block or carrier
whereby the lower rams are driven upwards through the moulds table after
compression to discharge the bricks thereonto.
A toothed wheel acting as a fly wheel is keyed on the main shaft & gears with a
pinion mounted on the driving shaft.
The charger is filled with clay from an overhead shoot and slides on the mould
table whereby it pushes forward the bricks raised by the lower rams and drops the
clay required in the moulds levelling such clay as it is withdrawn.
The accompanying drawing shows a side view of my improved brick press.
My improved machine consists of two frames H connected together by the axis e
and the mould table 1 bolted thereto and wherein operate four rams: two upper
rams B and two lower rams C furnished with pressure plates n whereby the brick
clay is compressed in the mould m being fed therein by the charger K which
receives the same from the hopper J above and is moved to and fro by the
levers P&Q and the cam O bearing against the roller r of the latter lever while
the lever Q is pivotted to the bracket f
The rams are carried by two blocks D and D' which slide up and down within
planed guides g formed in the frames H; the lower rams C that is to say their
carrier D' is compressed by the block D' connected by pins el to the two upright
connecting rods E which are pivotted at e to the operating lever A. The latter is
fulcrumed on the rod e carried by the frames H and is jointed at one end at e¹
to the upper end of the toggle T, the lower extremity of which is connected to

page_text: the upper rams B so that the lever A actuates the upper rams B by means of
the toggle T and the lower rams C through the vertical connecting rods or
levers E with the aid of the block D. The outer end of the lever A is
connected at f to a pitman or connecting rod F pivotted upon the crank pin
(not shown in the drawings) of the disc M which is mounted on the shaft V.
A toothed wheel W keyed on the main shaft is set in motion by a pinion
mounted on the motor shaft (not shown). Upon the rearside of the disc M is
formed or fixed a cam path S bearing against the loose roller s which is carried
by the lever p pivotted on the axis h on an extension of the frame H, the other
end of this lever p entering at z the lower ram block or carrier D'.
The cam O is formed on the front side of the disc M.
The drawing shows in full lines the rams in compression and partly shows in dot
and dash lines the other position i.e. when the upper rams are raised.
After the compression of the lower rams is effected by the block D2, the latter
recedes and, the cam path S acting now on the roller s, the rams C are pushed up
into the moulds and the plates n raise the bricks to the level of the mould table I
when the charger pushes them to the left hand side in order to fill the moulds m
afresh, the lower rams returning subsequently to their original position.
•
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 :
1. In brick making machines applying the compression simultaneously on the top
and on the bottom of the clay used to form the bricks, at one stroke of a single
operating lever actuated through a connecting rod by a crank disc keyed on the
main shaft, by means of upper rams connected to a toggle joint pivotted to the
operating lever and of lower rams actuated by a block connected by a compression
rod to the same lever substantially as herein described and shown.
2. In brick making machines the combination of the frame the mould table, the
upper and lower rams and compressive block actuated by the operating lever with
a crank disc formed with a cam path on one side and a cam on the other and a
toothed driving wheel both being mounted on the main shaft of the machine,
substantially as herein described and shown.
3. The improved brick press arranged, constructed, and operating substantially
as herein described and set forth.
Dated this 8th day of September 1894.
WALTER JOHN NEWTON TOMLINSON.