Improvements in Brick and Tile Presses.
Year: 1899

page_text: Date of Application, 14th Feb., 1899-Accepted, 8th Apr., 1899
COMPLETE SPECIFICATION.
Improvements in Brick and Tile Presses.
We, ELLIS P. RAYMOND, and CHARLES W. RAYMOND, both of Dayton, in the
County of Montgomery and State of Ohio, United States of America, Manu-
facturers, 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:-
-
Our invention relates to that class of brick presses more properly termed
re-pressers from the fact that the bricks or tiles pressed in them have received
their shape and some degree of pressure and the re-press condenses them and
gives them their final shape in sharp outlines. It has for its object the improved
construction of such machines whereby their durability, efficiency and rapidity
of action are largely increased.
The novelty of our invention will be hereinafter set forth and specifically
pointed out in the claims.
In the accompanying drawings:-
Figure 1, Sheet 1, is a side elevation of a brick press embodying our invention.
Figure 2, Sheet 2, is an end elevation of the machine looking towards the left
of Fig. 1, and with the driving mechanism and endless carrier.
Figure 3, Sheet 2, is a transverse central sectional view in end elevation with
the driving mechanism and operating arms omitted.
Figure 4, Sheet 3, is a sectional side elevation on the dotted line -
of Fig. 2.
The same letters of reference are used to indicate identical parts in all the
figures.
A is any suitable table or frame work in which is journaled transversely a
shaft B having fast at its middle a cam C, Figs. 3 and 4, and fast upon both
its ends outside the table a gear wheel D, Figs. 1, 2, and 3. Meshing with the
gears D are two smaller gears E on a counter shaft F, one of whose projecting
ends has fast upon it a driving pulley G driven by a belt H from any suitable
source of power.
Extending vertically from the table on each side near its middle are two
uprights I connected at their top by a stationary cross-head J, while guided on
and free to reciprocate on said rods I between the top of the table and the cross
head J, is a plunger cross-head. Each end of the plunger cross head K has a
wrist pin a, upon which is pivoted a bearing box b, Figs. 1 and 2, through which
are guided a pair of pitman rods L whose upper extending ends are threaded
and provided with adjusting nuts c between which and the box b, and surround-
ing the rods L are coiled tension springs d. The lower ends of the pitman
rods L are rigidly secured to a box e pivoted to a wrist pin on each of the gears 1),
so that the rotation of the gears D causes the vertical reciprocation of the
plunger cross-head.

page_text: Removably secured upon the top of the table A, are one or more die boxes M,
in this instance two, having within them and fitting snugly therein movable
bottoms or plungers, N carried on rods which pass down through perforations
in the table and have their lower ends adjustably secured to a cross-head P
guided on standards Q at its outer ends and carrying on its lower side a journaled
roller R in constant contact with the cam C.
Straddling the cross-head K is a saddle S made vertically adjustable by a
screw having its bearing through the cross-head and provided on its upper end
with a hand wheel g. The lower end of the saddle S carries a platen h on the
under side of which are male dies i of a size to enter and exactly fill the area
of the die boxes M and the adjustment of the parts and the shape of the cam C
are such that when the plungers N have their upper surfaces flush with the
top of the die boxes as seen in Figs. 2, and 3, the plunger cross-head K is suffi-
ciently elevated to admit the passage under it and onto the plungers N of the
bricks or tiles to be pressed. As seen in Fig. 4, there is a dwell in the cam at
this point and the plungers N remain stationary until the cross-head K has com-
pleted its upper stroke and begins to descend, whereupon the plungers N also
begin to descend and permit the bricks or tiles to settle within the boxes M,
and by the time they have reached the bottom of said boxes, the plungers N
will have descended "and entered the mouths of the boxes M and the pressing
of the bricks or tiles within the boxes will take place as will be readily under-
stood, the springs d acting as safety devices to prevent breakage should the clay
be unusually dense. As the cross-head K ascends the plungers N ascend with
it and force up the pressed bricks or tiles until they are entirely out of the
boxes M and are in a position to be pushed off upon an endless apron or car-
rier which takes them away to a convenient point of delivery.
The mechanism for automatically feeding in bricks or tiles to be pressed and
carrying away those that have been pressed may be described as follows:-
Adjacent to the die-box feeding table is a feeding table S¹, Figs. 1 and 4,
whose top is on a level with the top of the die boxes, and which is provided
with an inclined shelf for the reception of the bricks or tiles to be fed onto
the plungers N. The table S has upon it a reciprocating pusher T, actuated
as will be presently described. The pusher, at its backward movement, recedes
under the edge of the shelf; and the attendant then presses forward the bricks
or tiles, to be fed to the die-boxes, which fall upon the table S in front of the
pusher, and the latter upon its forward stroke forces them under a guide roller
directly upon the plungers N so as the register with the mouths of the boxes M.
The previously pressed and raised bricks or tiles are by the same action pushed
off the plungers N onto an endless apron or carrier U, Fig. 1, supported upon
guide rollers VW journaled in a bracket frame 1, one part of which is secured
to the table A and the other to the floor or base of the machine. The outer
roller W is driven by a sprocket wheel m and chain n from a sprocket wheel o
fast on the shaft F, Figs. 1, and 2.
Loosely journaled on the shaft are two bell-crank arms p, the lower arms
of which are connected by pivoted links q to bracket arms extending from the
saddle S, while the upper arms of said bell cranks are connected by pivoted
links to the pusher bar at each end and on each side of the die boxes M, the
connection being effected by lugs from the pusher bar extending down through
slots, which serve as guides, in the table S¹.
It will be seen from the foregoing description that the unpressed bricks or
tiles are automatically fed in onto the plungers N, displacing previously pressed
bricks or tiles which are pushed onto the endless apron or carrier and are car-
ried off for removal to the burning or drying kiln, and the freshly placed bricks
or tiles are then pressed in the manner before described.
By making the saddle S which carries the male dies adjustable the thickness
and density of the pressed bricks or tiles can be regulated as described.

page_text: Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, we declare that what
we claim is:-
1. In a brick pressing machine, the combination of a stationary table, a die
box or boxes thereon, a vertically reciprocating plunger in each die box, a cam
driven by the machine for actuating said plungers, and a vertically reciprocating
male die for each box driven by the machine and timed in its movements with
relation to the female die or dies, substantially as described.
2. In a brick pressing machine, the combination of a stationary table, a die
box or boxes thereon a vertically reciprocating plunger in each die box, a cam
driven by the machine for actuating said plungers, an adjustable vertically
reciprocating male die for each box driven by the machine, and an automatic
pusher likewise driven by the movement of the machine for feeding in fresh
bricks and expelling pressed bricks substantially as described.
3. In a brick pressing machine, the combination of a stationary table, a die
box or boxes thereon, a vertically reciprocating plunger in each die box, a cam
driven by the machine for actuating said plungers, an adjustable vertically
reciprocating male die for each box driven by the machine, an automatic pusher
likewise driven by the movement of the machine, for feeding in fresh bricks
and expelling pressed bricks, and an endless apron or carrier for taking away
the pressed bricks, substantially as described.
4. In a machine of the character described, the combination of the pitman L
connected to driving wrists at one end and to a cross head plunger at the oppo-
site end by means of spring buffers, substantially as described.
5. In a machine of the character described, the combination with the cross
head of the saddle S adjustable thereon, and the male die or dies i carried by
said saddle, substantially as described.
6. In a machine of the character described, the combination of the shaft B
carrying the cam C, the plunger rod cross head having roller R engaging said
cam, the plunger rods 0, plungers N thereon and the die boxes M in which said
plungers fit, substantially as described.
CHIS
IIVIL
1039.
ELLIS P. RAYMOND,
CHAS. W. RAYMOND,
By Herbert Haddan & Co.,
Agents to Applicants,
18, Buckingham Street, Strand, London, W.C.