An Improved Brick Pressing Machine.
Year: 1892

page_text: Date of Application, 15th June, 1892-Accepted, 16th July, 1892
COMPLETE SPECIFICATION.
An Improved Brick Pressing Machine.
I, CHARLES W. RAYMOND, of Dayton, Ohio, United States of America,
Manufacturer, 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 brick pressing machines and has for its object the
improved construction and mode of operation of presses of this character whereby
their capacity is increased. The novelty of my invention will be herein set forth
and specifically pointed out in the claims.
In the accompanying drawings:-
Fig. 1, Sheet 1, is a side elevation of a press embodying my invention.
Fig. 2, Sheet 2, is a central sectional end elevation of the same.
Fig. 24, Sheet 3, is a sectional plan view through the dotted line of
Fig. 1.
Fig. 3, Sheet 4, is an enlarged sectional detail in elevation, through the compress
box and its carrier, showing the automatic mechanism for partially dropping the
movable bottom of the box.
Fig. 4, Sheet 4, is a detail of the bottom of the rod and its lifting and releasing
plate looking from the left of Fig. 3.
Fig. 5, Sheet 4, is a side elevation of one of the carrier actuating gears and
cams.
Fig. 6, Sheet 2, is a sectional elevation of a modification in the brick feeding
mechanism.
Fig. 7, Sheet 2, is a plan view of Fig. 6.
The same letters of reference are used to indicate identical parts in all the
figures.
The main frame is composed of the arch A and base B, Fig. 1, in one strong
integral casting. Pivoted as at a on the upper side of the base are two levers C to
the upper ends of which are pivoted two similar levers D, said levers being
connected at their central pivots by a link E, to one end of which is pivoted the
inner end of a horizontal pitman F. The upper ends of the levers D are pivoted
as at b to the underside of the horizontal carrier G provided at its ends with
guide to
ways engaging planed ribs c upon the inner sides of the arch A, as shown. Upon
the carrier is removably secured the mold or compress box H open at its top, of
the usual or any suitable construction, and in which the bricks are pressed against
the usual or any suitable stationary platen I carried by and vertically adjustable
on the arch A.
While in operation the carrier and compress box are given a constant vertically
reciprocating motion through the medium of the toggle levers CD, link E and
pitman F by the following means, referring to Figs. 1, 24, and 5. In a supple-
mental frame J secured to the arch A, at one side, are journaled two horizontal
shafts K, L, the former having fast thereon the driving pulley M, and two small
pinions N meshing with two larger gears O fast upon the shaft L. Upon the
inner side of each of the gears O is formed a cam groove d, Fig. 5, the one being
the counterpart of and coincident with the other. In these cam grooves are
confined friction rollers e journaled upon a transverse pin or studs projecting from
the outer end of the pitman F. or, as shown in the present instance, from a head
piece upon the outer end of the pitman. To support the outer end of the pitman
and to maintain it in a substantially horizontal position at all times, I employ a
link P, Fig. 1, pivoted at its lower end as at 9 upon the base B and pivoted at its
upper end to a pendent arm of the head-piece f. As the gears are rotated by
ID 077

page_text: the pinions N the cam grooves d cause the reciprocation of the pitman F and
the raising and lowering of the carrier G and box H, as will be readily
understood.
To prevent jar on the down stroke of the carrier, G. I provide the rods Q, Fig. 1,
which are secured to the carrier at their lower ends and extend up into tubes R
upon the arch A. Springs surround the rods Q within the tubes and are put
under tension and act as buffers upon the down stroke by means of collars or nuts i
upon the upper ends of the rods engaging the springs, as shown by the broken away
portion of one of the tubes in Fig. 1.
Journaled in brackets S, Fig. 2. secured to the arch A is a horizontal shaft T
in the same plane with but at right angles to the shaft L by which it is driven by
means of the intermeshing bevel gears j.
Driven by this shaft T through the medium of the drive chain k is an endless
apron U whose inner end is carried upon and vibrates with the carrier G, or in any
other suitable manner for carrying off the bricks after they have been pressed in
the box H.
Rigidly secured to the arch A, opposite to the apron U is a horizontal feeding
table V Figs. 1, 2 and 2. This table is supported at its outer edges by legs W
extending to the base B, and it is so located as to have its upper surface exactly
flush with the top edge of the compress box H when the latter is at its lowermost
limit of stroke, as seen in Fig. 2, the compress box having a flange on that side at
its upper edge as shown at /.
Formerly the feeding table was secured to and vibrated by the carrier, thereby
imposing the weight of the feeding table and its associated parts upon the driving
power of the machine.
The present construction avoids this objection as the feeding table is stationary
and carried by the frame of the machine.
The feeding pusher is a plate m, Figs. 2 and 24, set vertically upon the table V
and supported upon the inner end of a rod n whose outer end passes through a
guide box upon the rear edge of the table. Pivoted between pendent hangers-p
upon the under side of the table V is a lever q whose upper end is connected by a
pivoted link to a pendent lug upon a collar adjustably clamped upon the rod n.
The Ing extends down through the slot in the table V. Fast upon the shaft, T
is a wheel or disc A', Figs. 2 and 2 having formed upon one side a cam groove u
in which is confined a friction roller upon a lever B₁ pivoted as at w upon the
base B. A link or pitman C pivotally connects the upper end of the lever q so
that the rotation of the disc A' causes the reciprocation of the rod n and pusher m
upon the table V, as will be readily understood.
Transversely of the arch A and beneath the same and the carrier G is a supple-
mental arch D' secured to the base B, Figs. 1, 2 and 3. Guided through a
perforated lug a' in the top of the arch D is the rod or leg E' extending up
through an opening in the carrier G and carrying the movable bottom F¹ suitably
constructed and snugly fitting within the compress box H.
During the upward stroke of the carrier and compress box, the bottom F1 forms
the bottom of the compress box and is carried up during the act of pressing the
brick, but during the down stroke of the compress box the leg E' is arrested, as
presently explained, and. the bottom F expels the pressed brick from the compress
box.
Supported and guided in boxes & Fig. 3 upon and near the top of the arch D' is
a horizontal rod having secured upon its end next to the lever 9 a pendent toe-
piece d' with which at the proper time a pendent luge upon the pitman C¹ engages
to slide the rod e' in one direction and to put a coiled spring upon its opposite
end, under tension. The spring f surrounds the rod, and is confined between the
box and a nut upon the adjacent end of the rod. Fast upon the rod c¹ between
the boxes is a plate y Fig. 4 resting upon a cross piece of the arch D' and
having its edge adjacent to legs E bevelled, the lower end of the leg being also
bevelled. The cam groove u is so laid out and the parts for operating the pusher

page_text: are so adjusted that, as the carrier and compress box descend to the position shown
in Fig. 2, the plate g' is directly under the leg E¹ while the pusher m. begins its
inward or feeding stroke. The bottom F1 has ejected the already pressed brick
and is, with the top of the compress box, flush with the top of the table V. At
this point the rollers e of the pitman F are in the dwell of the cam grooved and
remain so until the pusher m has brought the unpressed brick into contact with the
pressed brick and has forced the latter far enough on to the apron U, or in any
other transporting mechanism, for the latter to complete its removal. Just as or
slightly before the unpressed brick entirely registers with the mouth of the
compress box the pitman C' draws the plate g' from under the leg E' and permits
it and the bottom F¹ to drop to the position shown in Fig. 3, thereby forming a
slight cavity in the top of the compress box into which the unpressed brick falle
and is arrested. The purpose of the partial dropping of the bottom F is to
prevent the overshooting of the unpressed brick under the momentum of the
pusher and to insure its properly registering with the mouth of the compress box.
As the pusher m recedes the lug e' releases the toe d' and the spring f¹ draws back
the rod c so that the plate gl passes under the leg E¹ as in Fig. 2. Just as the
leg E is dropped as above described the rollers e leave the dwell of the cam
grooves d and the carrier (and the box H. begin to ascend to press the brick just
deposited.
H', Figs. 1 and 2, is simply a guide guage, for the impressed bricks, made
adjustable upon the table V.
The modification represented in Figs. 6 and 7 consists in providing a rectangular
upright support secured upon the table V and serving to hold a column of
unpressed bricks.
The pusher in this instance, is a slide J¹ passing under the support I' and as
wide and as thick as the brick. Its upper side is ribbed so that there is but slight
frictional contact between it and the brick resting upon it. At the extreme back-
ward throw it passes from under the column of bricks which then drops upon the
table. Upon the forward movement of the slide it engages with the lowermost
brick and carries it forward, from under the others, which again rest upon the slide,
and deposits it in the mouth of the compress box as before described.
While I have shown the parts so adjusted as to only partially drop the bottom F',
just as the unpressed brick registers with the mouth of the compress box, it will of
course be understood that my invention, in this particular, is not to be limited to
the degree of dropping the bottom, as the parts may be so adjusted as to drop the
bottom entirely until it rests upon its fixed support.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is.
1. In a brick pressing machine, the combination with the carrier having vertical
reciprocating motion, and a compress box carried thereon and provided with a
movable bottom for expelling à pressed brick, of a stationary feeding table
arranged to be flush with the top of the compress box at its lowest limit of stroke,
and a feeding pusher upon said table and actuated automatically by the press,
substantially as described.
2. In a brick pressing machine, the combination with the carrier having vertical
reciprocating motion, and a compress box carried thereon and provided with a
movable bottom having a pendent leg, of an automatic feeding pusher, a releasing
block for the leg, and connecting mechanism so adjusted that when the feeding
pusher carries an unpressed brick over the mouth of the compress box the block is
withdrawn and the leg and bottom permitted to drop, substantially as described.
3. In a brick pressing machine, the combination with the leg E' and pusher
pitman C having the lug e¹, of the rod e' carrying the toe d¹ and plate g', and the
retracting spring f¹ substantially as and for the purpose specified.
4. In a brick pressing machine, the combination with the carrier G of the

page_text: rods Q, arch A, tubes R, and springs h substantially in the manner and for the
purpose specified.
Dated this 15th day of June 1892.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.