Improvements in Brick Making Machinery.
Year: 1892

page_text: Date of Application, 21st Nov., 1892
Complete Specification Left, 21st Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Brick Making Machinery.
We JAMES WHITTLE and EDWARD WHITTLE Engineers and Machine Makers
Mitchel Street Iron Works, Newton Heath Manchester do hereby declare the
nature of this invention to be as follows:-
All the motions are set on an ordinary cast iron frame consisting of the following
materials-
1st front plate which pushes the clay through ten wires-planed true with slides-
on the under side is a toothed rack for a pinion wheel to work in to draw it back
and forward.
(2nd) is a shaft through the frame-the pinion is keyed on to it, and driven by
friction, on the (2nd) shaft end it has a hollow pulley and a friction roller runs
inside of it driven by another shaft No. (3) friction pulley (4) has an internal boss
turned up true, also the inside of pulley rim is turned true, and a leather covered
roller works on the rim inside between the boss and rim for the purpose of getting
two motions with about of an inch clearence to throw it in gear against the pulley
rim, to push the clay up, the back motion to bring the pusher back is worked an
eccentric bush that the friction roller shaft runs in, by this means the friction roller
runs against the boss to bring the pusher back to be ready for another charge of
clay, the friction roller No. (5) put out of gear to stop the pusher, to give time to
feed another charge of clay, the eccentric bush No. (6) has a lever on its end with
a weight on it, to keep the friction roller in gear when forward and back stroke are
in motion.
Dated this 18th day of November 1892.
JAMES WHITTLE.
EDWARD WHITTLE.
COMPLETE SPECIFICATION.
Improvements in Brick Making Machinery.
We, JAMES WHITTLE and EDWARD WHITTLE, Engineers and Machine
Makers, of Mitchell Street Iron Works, Newton Heath, Manchester, do hereby
declare the nature of this invention and in what manner the same is to he
performed to be particularly described and ascertained in and by the following
statement:-
This invention relates to the clay cutting tables of brick making machines and has
for its object to cause the back or return movement of the push plate to be quicker
than its forward movement and to put the operating mechanism in and out of gear
automatically or by hand when desired. To this end the front or push plate which
pushes the clay through the cutting wires is carried on one end of a horizontal
slide carrying on its under side a toothed rack into which engages a pinion carried
on a cross shaft mounted in fixed or stationary bearings. The cross shaft carries
near each extremity a friction roller one of these rollers constituting the hub or boss
of a rim wheel and a second shaft parallel with the first but mounted eccentrically
in a rotatable bush also carries a pair of friction rollers. The said second shaft is
the driving shaft of the apparatus and may be rotated either by hand or power.
is capable by means of the eccentric bush of being moved towards so as to bring its
pair of friction rollers against those on the first shaft and so cause the quick return
or back movement of the push plate or to be moved in the other direction so that
one of its friction rollers may be brought against the inner side of the pulley rim
D
It

page_text: and thus cause the slow forward movement of the push plate. The eccentric bush
is provided with a lever and weight so arranged as to hold the friction rollers in
gear against each other during either the backward or forward movement of the
push plate.
In the accompanying drawings,
Fig. 1 is a side elevation and
Fig. 2 a plan view (with the rim pulley shewn partly in section) of apparatus
embodying our improvements as herein before described.
Fig. 3 is a sectional view designed to illustrate the arrangement and action of the
eccentric bush.
a is the iron framework of the apparatus & the cutting table c the push plate
carried upon one end of the slides and d the framing carrying the upper ends of
the cutting wires. e is the shaft which carries the pinion engaging with the toothed
rack and g is one of its friction rollers and 9 the other the roller g₁ being the
hub or boss of the pulley h having the rim j. k is the second shaft mounted
eccentrically in the bush to which is affixed by means of a collar m the lower end
of a lever n which carries the weight o. At its upper end the lever n is jointed to
one end of a handle or rod p whereby the eccentric bush may be moved from the
front of the apparatus so as to bring the rollers against the rollers g g' or to
move the roller into frictional contact with the wheel rim ; (see also Fig. 3).
t is a rod jointed to the push plate c having adjustable collars or stops vr so
arranged as to meet an arm w fast upon the other end of the eccentric bush / so
that when the push plate has moved to the required distance in either direction
the rollers may be automatically withdrawn from or pushed out of contact with
each other.
r
is a driving pulley (not shewn in Fig. 1). In Fig. 2 the lever n and the
arm w are shewn in section and the handle p the rod t and the weight o are omitted
for the sake of greater clearness.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
The improved apparatus for imparting a quicker and a slower speed to the
backward and forward movements respectively of the push plate of a brick cutting
table arranged and operating substantially as hereinabove described and shewn in
the drawings.
Dated this
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicants.