Improvements in Brick Presses.
Year: 1889

page_text: Date of Application, 12th July, 1889-Accepted, 17th Aug., 1889
COMPLETE SPECIFICATION.
Improvements in Brick Presses.
I RICHARD WOOD DAVIES of Croydon near Sydney in the Colony of New South
Wales Engineer do hereby declare the nature of the said invention and in what manner
the same is to be performed to be particularly described and ascertained in and by
the following statement :-
This invention relates to Brick Presses in which power is applied by mechanical
means such as cams eccentrics and the like actuated by any kind of motor and it
has been devised in order that the bricks may be more equally consolidated, that
there shall be less risk of damage or breakage of the machine and its parts and
that there shall be means of regulating the amount of material supplied for each
brick.
But in order that this invention may be clearly understood reference will now be
made to the drawings in which Figure 1 is a front elevation of a brick press con-
structed according to these improvements-Figure 2 is a side elevation Figure 3'is a
plan Figure 4 is a vertical section of the same on lines a a Figure 1 and Figure 5
is a vertical section on line bb Figure 4-A is the sole plata or base of the press-
B, the mould or compression box having two divisions-Ciop cam shaft-D lower
shaft E top presser head-F bottom presser head-G mould charger-H adjustable
wedge pieces-L driving shaft-J intermediate shaft-A' A' are side cheeks or
vertical frames-A³ charge table or bracket-A³ discharge table or bracket-A* clay-
shoot or hopper-A are slots and A° guides-B² is division piece-C is centre and
Cside cams or eccentrics-03 spur wheel-D is disc-D2 and D³ are cam ribs or
risers D' are disc cams or risers-D pendant rods on pins Do and having rollers D'
-D³ is centre and D' side eccentrics-D is spur wheel-E' is top piston or presser-
E centre piston or frog mould-E³ centre and E' side anti-friction rollers-are
bottom pistons or pressers-F2 bearings-3 antifriction roller-F eccentric straps
and rods F slippers- guide pins-G is extension flange and cover-G² a draw
bar or link-G³ levers-Gfulcrum spindle-G5 bearings- friction roller-G7 stop
-H' is lever-H joint-H fulcrum pin-H* supporting bracket-146 quadrant
piece El holding tongue-H7 handle-H8 grip piece-H spring-H wedge
supports- I fast and loose pulleys-12 pinion-1³ bearings-J is wheel-
Jpinion and J³ bearings.
spur
In operation when motion is imparted to driving shaft I by the belt on the fast
pulley of pulleys 1' the pinion 12 gearing into wheel J causes shaft J to revolve and
this latter by means of pinion J and wheel 10 revolves lower shaft D and by means
of wheel Jpinion J2 wheel D10 and wheel C³ also revolves top shaft and the whole
of the moving parts are thus caused to operate in regular relative sequence and it is
only necessary to keep a supply of clay preferably dry or semi-dry clay in the shoot
or hopper A The mould charger G is filled under this hopper and is caused to move
forward to the mould or compression box B and after the clay has fallen into said box
to move back under the hopper A' by the action of the levers G³moved by the
roller G travelling between the eau ribs or risers on disc D-The mould or
compression box B being filled with the contents of charger G and while said charger
is being refilled under the hopper A the pressing of the clay into a brick takes place
in the following manner-The presser head E is moved downward by the action of
centre cam Cupon rollers E³ the rods D' and rollers D' on cams D allowing of the
movement and this movement more especially protrudes the frog mould E2 to make a
deep impression in the clay-At the same time the eccentrics D' by their rods F
and slippers F lift the lower head F and cause the piston F¹ to pass into the
nould box-A pressure is now given by the action of the eccentrics against
rollers E pressing the head E downwards and the eccentrics D' pressing head F

page_text: .
upwards results in making a true square and sharp cornered brick-The centre
eccentric D pressing upwards against roller F3 in bearings and keeping pistons F
firmly in the mould box B and when the top pressure is relieved causing the
pistons to rise to the top level of the mould box B in order that the brick may
be pushed (by the forward movement of the refilled charger) on to table or
bracket A the cams D and rods D with rollers D2 having just previously lifted
the head with its parts upwards out of the way-To make the second pair of bricks
the same relative movements of the mechanism take place and so on as often as
required The amount of material supplied to cach brick mould is regulated by means
of wedge piece H which is inserted between the bearings and the bracket H
and so regulates the position of the movable bottom of the brick mould-This adjust-
ment is obtained by moving lever H7 which by means of lever H¹ withdraws or
inserts the wedge piece H.
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 :-
First The combination and arrangement with the top presser head of a central
movable frog mould with an independent cam or occentric to impars motion sub-
stantially as herein described and explained.
Second-The combination and arrangement with the bottom presser head of
eccentrics with straps and rods to impart the upwards pressure substantially as herein
described and explained.
Third The combination and arrangement with the bottom presser head of the
bottom die blocks or pistons worked by an independent cam or eccentric for lifting
the die blocks level and flush with working table substantially as herein described and
explained and as illustrated in the drawings.
Fourth-The combination and arrangement with the top presser head of cams on
the bottom shaft with guided rods thereon for lifting and supporting said head after
it has done its work substantially as herein described and explained and as illustrated
in the drawings.
Fifth The combination and arrangement with the bottom presser head of the
wedge piece and means for actuating same for regulating the position of the bottom
die blocks or pistons during the filling of the mould box."
Sixth The combination and arrangement together of the mechanical parts forming
machine for pressing bricks substantially as herein described and explained and
as illustrated in the drawings.
Dated this Twenty-eighth day of May One thousand eight hundred and eighty-
RICHARD W. DAVIES.