Improvements in Brick Pressing Machines.
Year: 1891

page_text: Date of Application, 28th July, 1891
Complete Specification Left, 21st Dec., 1891-Accepted, 6th Feb., 1892
PROVISIONAL SPECIFICATION.
Improvements in Brick Pressing Machines.
We, JOHN SAMUEL PULLAN, WILLIAM HUTCHINSON MANN, and JOHN
GILL, all of Elland Road, Leeds, Engineers, do hereby declare the nature of this
invention to be as follows
The object of our invention is to provide an automatic stop motion on brick
pressing machines, by which after the brick is pressed and the plunger is raised to
the top, the machine automatically stops for the removal and insertion of the bricks,
also to make the bricks of one uniform thickness outwardly.
We employ a catch or projection preferably operated by and connected to the
crosshead of the machine, this catch comes in contact with the handle of the clutch
lever and automatically stops the machine at the top after the plunger is raised, a
following up spring returns the handle.
The clutch consists of a pin passing through the clutch boss and having an
angular projecting head in the groove of the boss of the clutch, a similar angular
projection is formed on the clutch lever.
The action is as follows:-
To start the machine the handle of the clutch lever is pulled down or moved so
that the other end which is in the groove of the clutch is lifted clear of the angular
projection of the pin, the said pin is pushed into a hole or recess in the fly or driving
wheel so operating the machine, after the plunger has come down and pressed the
brick it returns, and by means of the catch raises the clutch lever handle, and the
other end of the lever drops into the clutch groove and its angular incline draws
out the pin from the recess in the fly or driving wheel, so stopping the machine
automatically.
In the plunger for forming the recess or panel in the brick, we employ a loose
plate within the plunger, behind the loose plate panel is a spring or other spring
medium, by this means the bricks are of one uniform thickness outwardly.
Dated this 27th day of July 1891.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Brick Pressing Machines.
We JOHN SAMUEL PULLAN, WILLIAM HUTCHINSON MANN, and JOHN
GILL, all of Elland Road, Leeds, Engineers, 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 :-
The object of our invention is to provide an automatic stop motion on brick
pressing machines, by which, after the brick is pressed, and the plunger is raised to
the top, the machine automatically stops for the removal and insertion of the bricks,
also to make the bricks of one uniform thickness outwardly.

page_text: Fig. 4 is detail showing rubber cushion under bottom plate, with steel cover for
same.
Fig. 5 shows enlarged elevation of clutch lever and clutch wheel.
Fig. 6 is a plan of Fig. 5.
A is the frame of machine, B is the crosshead or plunger, to which is attached a
catch or projection C, which is operated by the said crosshead B.
This catch C comes in contact with the handle D, of the clutch lever E, and
automatically stops the machine at the top of its stroke; when the plunger is raised,
a following up spring F, returns the handle.
The clutch consists of a pin G, passing through the clutch boss H, and having an
angular projecting head J, in the groove K, of the boss of the clutch wheel; a
similar angular projection L, is formed on the clutch lever E.
The action is as follows:-
To start the machine the handle of the clutch lever is pulled down or moved, so
that the other end, which is in the groove of the clutch, is lifted clear of the angular
projection of the pin; the said pin is pushed, or pulled by springs M, into a hole
or recess N', in the boss of the fly or driving wheel N, so operating the machine,
after the plunger has come down, and pressed the brick, it returns, and by means
of the catch, raises the clutch lever handle, then the other end of the lever drops
into the clutch groove, and its angular incline draws out the pin from the recess in
the fly or driving wheel N, which is loose upon the shaft, so stopping the machine
automatically, the driving wheel runs loose on the shaft, and still revolves when
the shaft is standing, but the clutch box is keyed on to the shaft, and revolves with
it when the machine is in operation.
In the plunger B, for forming the top recess or panel in the brick, we employ
a loose plate P within the plunger, behind the loose plate or panel P are
springs R.
By means of the plate P, and springs R. behind it, when too much clay is in the
mould, the plate recedes and makes its indent in the brick more shallow, still leaving
the brick one uniform thickness outside.
To hold the plate up after its receding, in order that the inside plate P, and the
outside skeleton plate P' ascend together, thereby avoiding undue pressure on the
centre of the brick, which would cause the outside to swell up and crack; there is
a spring cotter U, in a suitable recess V, a bracket S, is placed upon the frame A,
having an incline S¹, which comes in contact with an incline T, upon the spring
pin or cotter U, this draws back the spring cotter U, and releases the spring plate,
so that it is again ready for action at its usual depth.
W is an indiarubber cushion on the table W', (between it and the mould W³,
and the bottom press plate W³,) with metal shield X, to protect it from oil, the
shield at Y forms a stop and after the rubber is compressed to that point and
the brick faced up, the top plunger still descends and measures the thickness
of the brick, the pressure from the whole surface of the brick is removed
simultaneously.
The use of the rubber gives a better face to the brick, as well as lessening the
shock of the plunger.
The arrangement of spring top plate for ensuring equal sizes of bricks, can be
used to any class of machine.
Having now particularly described, and ascertained the nature of this inven
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In brick and tile pressing machines, automatically stopping the machine for
the removal of the bricks, for the purposes substantially such as described.
2. The employment of the clutch lever E, clutch G, and catch C, operated by
the crosshead, or plunger, as and for the purposes, such as shown and described.
=
3. The spring top plate panel P, and the outside skeleton plate Pl, with spring

page_text: cotter U, incline S¹, and bracket S. (or their equivalents) for allowing the receding,
holding, and releasing of such plates as and for the purposes described.
4. The indiarubber cushion or spring W, shield X, and stop Y between the
table W', and the mould W2, as and for the purposes shown and described.
5. The arrangement of spring top plate P, and skeleton plate P', so that after
operating upon the brick they ascend together as and for the purposes shown and
described.
Dated this biftaanth dow of December 1891
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds, Agent for the Applicants.