Improvements in Machinery for Pressing Bricks.
Year: 1897

page_text: Date of Application. 14th July, 1897
Complete Specification Left, 23rd Mar., 1898-Accepted, 7th May, 1898
Improvements in Machinery for Pressing Bricks.
MARK GENTRY, Brick Manufacturer and Merchant, of Sible Hedingham, in the
County of Essex, and HARTLEY GRUNWELL, Civil and Mechanical Engineer, of
Gladstone Avenue, Wood Green, London, N., do hereby declare the nature of this
invention to be as follows:-
An improved brick press having two sets of dies A & B with movable &
collapsible inner linings d, e, and so arranged that the power and motion obtained
by a toggle F, G, H, actuated by a wheel and crank I, J, (or other motion) may be
applied alternately to each set of dies, thereby increasing the rate of production by
allowing a second brick to be pressed while the previous one is being taken off and
replaced. The improved form of die making the press more efficient and reducing
wear and tear.
All the motions aro automatic and by moving the wheel and crank I J, through
less than half a circle and back again the brick in the first die (say A, Fig. 1) is
pressed, and the lineing d, e, of the die lifted (and held by a catch K L) in such a
position (Fig. 3), that the sides and ends d, d, d, are laid flat, and the base, e,
projected some distance above them carrying the brick ready for stripping; the
pressing rods M, and top of die N, at the same time being thrown over clear,
either making a halt at the centre as in Fig. 3, or going direct into position over
the second die B, Fig. 4, proceeding at once to press another brick if required.
While pressing is going on in one die the other is at rest, clear of all obstruction,
and in the most convenient position for taking off and replacing the bricks and
cleaning the die; the maximum available time being allowed for this by the lifting
crescent P, bringing the catch K L, into gear before the pressing rods M, arrive at
the centre and remaining in gear until relieved by the crescent P on returning.
In the movable dies, d, e, parts subject to rapid wear as hinges joints &c. have
been dispensed with, the lineing of the dies being mostly composed of plain plates
easily repaired or renewed.
Instead of being brought together by pressure from the top of die, they are
made to sink into fixed casings A, B, of the dies by knuckles R R, (in the bottom
of which a roller can be inserted if necessary) working between the base, e, and
the lifting ribs S; a slight taper and adjusting rollers T, T, bring on the pressure
gradually, and allow for taking up the wear; pins V V keep the collapsing motion
regular.
The machine can be either hand or power driven and is so designed that a simple
arrangement can be applied for pressing the brick from top and bottom at the
same time if required.
MARK GENTRY,
H. GRUNWELL,
Applicants.

page_text: MARK GENTRY, Brick Manufacturer and Merchant, of Sible Hedingham, in the
County of Essex, and HARTLEY GRUNWELL, Civil and Mechanical Engineer, Wood
Green, London, N., 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 & drawings left with the Provisional Specifica-
tion :-
:―
An improved brick press having two sets of dies A & B with movable and
collapsible inner linings d e and so arranged that the power and motion obtained
by a toggle F, G, H actuated by a hand wheel and crank I J (or other motion)
may be applied alternately to each set of dies, thereby increasing the rate of
production by allowing a second brick to be pressed while the previous one is being
taken off and replaced; the improved form of die making the press more efficient
and reducing wear & tear.
All the motions are automatic and by moving the hand wheel & crank I, J,
through less than half a circle and back again the brick in the first die (say A) is
pressed and the lining de of the die lifted (& held by a catch K L) in such a
position that the sides and ends d d are laid flat, and the base e projected some
distance above them carrying the brick ready for stripping; the pressing rods M
and top of die N at the same time being thrown over clear, either making a halt at
the centre or going direct into position over the second die B, proceeding at once
to press another brick if required.
While pressing is going on in one die the other is at rest, clear of all obstruction
and in the most convenient position for taking off and replacing the bricks and
cleaning the die; the maximum available time being allowed for this by the lifting
crescent P bringing the catch K L into gear before the pressing rods M. arrive
at the centre and remaining in gear until relieved by the return of the
crescent P.
In the movable dies d, e, parts subject to rapid wear as hinges & joints &c. have
been dispensed with, the lining to dies being mostly composed of plain plates easily
repaired or renewed; in lieu of being brought together by a nip at the top they
are made to sink into fixed casings A, B, of the dies by knuckles R (in the bottom
of which a roller can be inserted if necessary) working between the base e and the
lifting ribs S; a slight taper and adjusting rollers T bring on the pressure top &
bottom gradually and allow for taking up the wear, pins V V keep the collapsing
motion regular.
The machine can be either hand or power driven, and is so designed that a simple
arrangement can be applied for pressing the bricks from top & bottom at same
time if required.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we wish it understood we
do not propose confining ourselves to all the exact details herein described and
exhibited, but what we claim and wish to protect is :-
A press for bricks, tiles & the like, having two (or more) sets of dies with
movable & collapsible inner linings lifted and lowered automatically and so
arranged that while a brick is being pressed in one die the movable parts of the
other are at rest and in a convenient position for taking off and replacing the bricks

page_text: and cleaning the dies; substantially as herein described and shewn on drawings
left with Provisional Specification.
Dated this 19th dor of March 1808
MARK GENTRY,
H. GRUNWELL,
Applicants.