Improvements in Brick Making Machinery.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Brick Making Machinery.
JOHN JONES Britannia Works Loughborough Leicestershire Engineer. I do
hereby declare the nature of this invention to be as follows:-
The object of my invention is to produce certain improvements in connection
with what are known as "cutting off tables" or "side delivery tables" for the
production of "wire cut" bricks and the like.
The said improvements are in connection with the mechanism for working the
"pressure board" or "push board" or other device which forces the stream of
clay through the wires, or "fiddle."
In cases where the push board advances towards the wires with the severed
stream of clay, instead of forcing the said push-board forward by means of a hand
lever as is generally done I arrange certain mechanism worked by a belt, or other
conveniant gear, and governed by the foot (or if preffered the hand) of the
attendant.
Beneath the table I place a countershaft similar to that used upon most of the
cutting off tables of the type known as "Murrays."
The said shaft may carry suitable toothed quadrants which gear into racks
connected to the said "push board" as will be well understood by all conversant
with brick making machinery.
Upon the said countershaft I arrange a suitable balance weight or weights and
in some cases, in addition thereto I attach an extra balance weight by means of a
cord or chain passing over suitable guide pullies, to the back of the "push board"
or parts attached thereto. The said balance weight or weights are so arranged
that when the said push board (with the parts attached thereto) is released it will
fall back into its retired or out of work position. In some cases instead of using
balance weights as above described it is sometimes conveniant to use spiral or
other forms of springs.
Upon the said countershaft I fix a suitable friction wheel. Below the said
countershaft or in other conveniant position I arrange a second countershaft, or
driving shaft. Upon the said driving shaft (preferably at, or near the end) I fix
a second friction wheel, or pinion, suitably shaped to gear with or into the first
nanied friction wheel upon the countershaft.
One end of the driving shaft (farthest from the friction pinion) may run in any
conveniant form of ordinary bearing, and to this end of the driving shaft may be
fixed the pulley or gear wheel, through which the power is comunicated for
working the table.
The other end of the driving shaft I arrange to run or work, in an eccentric
bush or "sleeve," which is mounted in, or carried by, a suitable bracket or bearing,
the whole being so adjusted that when the said eccentric bush is turned in its
bracket, or bearing, the end of the driving shaft is brought nearer to the counter-
shaft, and the friction pinion on the driving shaft is thereby brought into contact
with the friction wheel on the countershaft & the push board is brought into
action.
To the said eccentric bush I attach a suitable lever, or pedal, so arranged that
a slight pressure thereon will cause the eccentric bush to turn in its. bearing & so
bring the friction wheel and pinion into gear, as herin before described.

page_text: Thus it will be seen that when the driving shaft is kept constantly running, the
attendant has simply to place his foot upon the pedal when the push board will be
driven forward, and when the attendant releases the pressure upon the pedal the
balance weight or weights, or spring, or springs, will draw the push board back
ready to receive the advancing stream of clay.
The friction pullies, may have wide, flat, or other conveniantly shaped periphery,
which may be coated with, or made of, any suitable material to create the necessary
"friction grip," or the wheel may be grooved peripherically with any conveniant
number of suitably shaped grooves, the pinion gearing therewith may likewise be
grooved so that when the two are brought together they will "fit" or "grip."
This latter arrangment I generally prefer.
In order to prevent any undue strain or wear, upon the friction pullies or other
parts, which would occur if the power was kept on after the push board had
reached its forward position, I arrange a suitable automatic releasing stop so that
when the push board has reached its full forward position the friction pinion is
automatically thrown out of contact with the friction wheel.
This I arrange as follows:-
Upon the side or in other conveniant position upon the friction pulley I attach a
suitable pin, or projection which in some cases may be adjustable.
Upon the herin before described eccentric bush, or sleeve, is a suitable arm or
projection situated & adjusted, in such a position that it lies in the path of the said
pin or projection upon the friction wheel. These said pins or projections being
arranged in such a manner that when the friction wheel has turned far enough to
bring the push board to its extreme forward position the pin or projection upon the
friction wheel will engage with the arm, or projection, upon the eccentric bush or
sleeve, and cause it to turn in its bracket or bearing in such a manner and to such
an extent as to release the "grip" between the friction wheel and pinion. The
forward movement of the push board is thus automatically stopped & the balance
weight, or weights, or spring, or springs then draw the push board back as herin
before described.
Although in the above description I have described my invention as applied to
a cutting off table of the type where the stream of clay is forced through the
wires by means of the push board advancing towards the wires, yet it will be
evident that the same mechanism can be equally well applied to any other type
of cutting off table without departing from the principle thereoff.
Dated this 7th day of July 1896.
Improvements in Brick Making Machinery.
JOHN JONES, Mechanical Engineer, of Britannia House, Meadow Lane
Loughborough, in the County of Leicester 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 :-
The object of my invention is to produce certain improvements in connection
with what are known as "cutting off tables" or "side delivery tables" for the
production of "wire cut" bricks and the like.
The said improvements are in connection with the mechanism for working
the "pressure-board," or "push-board" or other device, which forces the stream
of clay through the wire or fiddle.
In cases where the push-board advances towards the wire with the severed
stream of clay, instead of forcing the said push-board forward by means of a hand
lever, as is generally done, I arrange certain mechanism, worked by belt or other

page_text: convenient gear, and governed by the foot (or if preferred the hand) of the
attendant.
Beneath the table I place a counter shaft similar to that used upon most of the
cutting off tables of the type known as "Murrays." The said shaft may carry
suitable toothed quadrants which gear into racks connected to the said push-board,
as will be well understood by all conversant with brick-making machinery.
Upon the said countershaft I arrange a suitable balance weight or weights and
in some cases in addition thereto I attach an extra balance weight by means of a
cord or chain passing over suitable guide pulleys to the back of the "push-board "
or parts attached thereto.
The said balance weight or weights are so arranged that when the said push-
board (with the parts attached thereto) is released it will fall back into its retired
or out of action position.
In some cases instead of using balance weights as above described it is sometimes
convenient to use spiral or other form of springs.
Upon the said countershaft I fix a suitable friction wheel. Below the said
countershaft or in other convenient position I arrange a second countershaft, or
driving shaft. Upon the said driving shaft (preferably at or near the end) I fix a
second friction wheel or pinion, suitably shaped to gear with or into the first nained
friction wheel upon the countershaft. One end of the driving shaft (farthest from
the friction pinion) may run in any convenient form of ordinary bearing, and to
this end of the driving shaft may be fixed the pulley or gear wheel through which
the power is communicated for working the table.
The other end of the driving shaft I arrange to run or work in an eccentric
bush or "sleeve" which is mounted in, or carried by a suitable bracket, or bearing,
the whole being so adjusted that when the said eccentric bush is turned in its
bracket or bearing the end of the countershaft and the friction pinion on the
driving shaft is thereby brought into contact with the friction wheel on the counter-
shaft and the push board is brought into action.
To the said eccentric bush I attach a suitable lever or pedal, so arranged that a
slight pressure thereon will cause the eccentric bush to turn in its bearing and to
bring the friction wheel and pinion into gear as herein before described.
Thus it will be seen that when the driving shaft is kept constantly running the
attendant has simply to place his foot upon the pedal when the push-board will be
driven forward, and when the attendant releases the pressure upon the pedal the
balance weight or weights, or spring or springs will draw the push-board back
ready to receive the advancing stream of clay.
The friction pulleys may have a wide flat or other conveniently shaped periphery
which may be coated with, or made of, any suitable material to create the necessary
"friction grip," or the wheel may be grooved peripherically with any convenient
number of suitably shaped grooves, the pinion gearing therewith may be likewise
grooved so that when the two are brought together they will fit or "grip." This
fatter arrangement I generally prefer.
This arrangement will be understood by referring to the accompanying drawing.
Figs. 1 to 3, Sheets 1 to 3 show three views of a cutting off table arranged as
herein before described. Fig. 1 is a part front elevation. Fig. 2 a part plan, and
Fig. 3 is a part end elevation.
A A A Figs. 1 & 2 are the usual rollers over which the stream of clay advances
to the table. B is the usual sliding frame which carries a wire B 1 (Fig. 3) for
cutting off the necessary length from the stream of clay previous to its being
advanced into position behind the cutting or thicknessing wires A1 (Fig. 1).
A 2 is the push-board (Figs. 1 & 3) which is connected by suitable brackets A 3
to the rack or racks A 4.
C is a countershaft placed beneath the table, to this shaft quadrants C1 are.
attached and these quadrants gear into the racks A 4. Thus by rotating or
rocking the shaft C the push-board A2 is caused to advance or retire to or from
the wires A 1 according to the direction in which the shaft C is rotated or rocked.

page_text: To the shaft C suitable balance weights (not shown) may be attached in any
convenient well understood manner. The said weight or weights may be so
adjusted and may he caused to act in such a manner that when the push-board and
parts attached thereto are released as herein after described the said push-board
will be brought into its backward or out of action position as seen in Fig. 3.
In some cases the said balance weight or weights which are attached to the
countershaft as above described may be so adjusted as to balance the quadrants C1
and other parts upon the shaft C. And to cause the push-board to retire into its
out of action position when released a suitable independent balance weight D,
Fig. 3, may be carried by a cord or chain D1 which passes over a suitable guide
pulley D 2 and is then attached to the push-board A 2 or parts attached thereto.
To the quadrant. C 1 or other convenient part or parts a stop arm or lever C2
may be attached and so arranged as to engage with the buffer stops C 3. C 4 and
thus limit and regulate the distance traversed by the push-board A. 2. All this
part of the arrangement will be at once well understood by all conversant with
brick-making machinery.
Upon the countershaft C I fix a suitable friction wheel or segment E, Figs. 1
and 2. Below the shaft C, or in other convenient position, I arrange another
countershaft or driving shaft F.. Upon this shaft I fix a second friction wheel or
pinion F1. so shaped and arranged as to gear into the friction wheel or segment E.
One end of the shaft F (farthest from the friction pinion) may be carried by or
run in any convenient form of ordinary bearing such as F 2, Fig. 1, and to this
end of the driving shaft F (preferably near the bearing F 2) the pulley or gear
wheel F 3 (Fig. 2) through which the power is transmitted may be attached. The
other end of the driving shaft F I arrange to run in an eccentric bush or sleeve F4,
Fig. 3 which is carried by and is free to turn in the bracket or bearing F 5.
To the eccentric bush a foot lever or pedal F 6 is attached in such a position
and in such a manner that when the attendant places his foot upon the pedal F6
the eccentric.bearing F 4 is turned in its bracket and the end of the driving shaft F
running therein is raised so as to bring the friction pinion F1 into gear with the
friction wheel or segment E. and when the foot is raised from the pedal F 6.
a suitable balance weight F 7 causes the eccentric bearing F 4 to turn back again
so as to throw the friction wheels out of gear.
The rod or arm which carries the balance weight F7 may be prolonged forwards
as shown at F 8, or an independent arm may be so arranged and adjusted as to
come into contact with any convenient part of the framing and thus form a stop
for the eccentric bush or bearing and parts attached thereto when the friction
pinion is out of gear or action.
Now it will be seen that if the shaft F' is kept constantly running in the direction
of the arrow Fig. 3, when the attendant places his foct upon the pedal F6 the
friction pinion 1 is thrown into gear with the friction wheel or segment E and
the push-board A 2 is thereby driven forward and the section of clay is forced
through the wires A 1, and directly the foot is removed from the pedal F6 the
balance weight F7 causes the eccentric bearing F 4 to turn back and consequently
the friction pinion F1 to move out of gear, and balance weight D (Fig. 3) at once
causes the push-board A 2 to retire ready for the next advancing section of clay as
herein before described.
It will be evident that, if desired, instead of the pedal F 6 or in addition thereto
a hand lever may be attached to the eccentric bearing F 4 so that the attendant
might use his hand instead of his foot.
In order to prevent any undue strain or wear upon the friction pulleys or other
parts, which would occur if the power was kept on after the push-board had reached
its forward position, I arrange a suitable automatic releasing stop, so that when
the push-board has reached its full forward position the friction pinion is auto-
matically thrown out of contact with the friction wheel.
This arrange as follows:-Upon the side of, or in other convenient position
upon the friction pulley (or independent of the pulley but attached to the same

page_text: shaft) I attach a suitable pin or projection or bracket, which in some cases may be
adjustable.
Upon the herein before described eccentric bush or sleeve is a suitable arm or
projection situated and adjusted in such a position that it lies in the path of the
said pin or projection or bracket upon the friction wheel or shaft. The said pins,
projections, or brackets being arranged in such a manner that when the friction
wheel has turned enough to bring the push-board to its extreme forward position
the pin, projection or bracket upon the friction wheel or its shaft will engage with
the arm or projection upon the eccentric bush or sleeve and cause it to turn in its
bracket or bearing in such a manner and to such an extent as to release the "grip
between the friction wheel and pinion.
"
The forward movement of the push-board is thus automatically stopped and the
balance weight or weights or spring or springs then draws the push-board back as
herein before described.
This will be understood by referring to Figs. 3 and 4 Sheet 3. Fig. 4 is a
separate view of the eccentric bush F 4 and some adjaceut parts, which are shown
in their relative positions at the moment the automatic releasing motion comes into
action. Upon the shaft C an arm or bracket G is fixed, and upon the eccentric
bush F 4 another arm or bracket G 1 is fixed, both being adjusted in such a manner
that as the shaft C turns in the direction of the arrow G 2 Fig. 4 to advance the
push-board as herein before described, the bracket G will come into contact with
the bracket G 1 the eccentric bush F 4 will be turned in its bracket and the shaft F
will be thereby lowered and consequently the pinion F 1 is thrown out of gear, the
forward movement of the push-board is thus automatically stopped and the said
push-board is then free to be drawn back by the weight or weights or spring or
springs to make way for the next advancing section of clay as herein before
described.
Although in the above description I have described my invention as applied to a
cutting off table of the type where the stream of clay is forced through the wires
by means of the push-board advancing towards the wires, yet it will be evident
that the same mechanism can be equally well applied to any other type of cutting
off table without departing from the principle thereof.
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 is
claimed is:-
First. In a "cutting off table," or "side delivery table" for the production of
wire-cut bricks and the like, balancing the countershaft which carries the quadrants
and other moving parts, by suitable counter balance weights substantially as herein
before described.
Second. In a "cutting off table" or "side delivery table" for the production of
wire-cut bricks and the like the method of advancing the push-board by power, by
means of friction gear substantially as herein before described.
Third. In a "cutting off table or "side delivery table" for the production of
wire-cut bricks und the like the arrangement of eccentric bush or bearing for
carrying the end of the driving shaft by means of which the driving pinion is
thrown in and out of action substantially as herein before described.
Fourth. In a "cutting off table" or "side delivery table," for the production of
wire-cut bricks and the like, automatically stopping the advance of the push-board
substantially as herein before described.
Fifth. In a "cutting off table" or "side delivery table" for the production of
wire-cut bricks and the like the arrangement of mechanism substantially as herein
before described.
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