Improvements in Machinery or Apparatus for Pressing Bricks, Blocks, Tiles, and other like articles.
Year: 1892

page_text: Date of Application, 3rd Oct., 1892
Complete Specification Left, 1st June, 1893-Accepted, 1st July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Pressing Bricks,
Blocks, Tiles, and other like articles.
I JOSEPH HAMBLET, of Piercy Blue Brick, Tile and Pipe Works, West
Bromwich, in the County of Stafford, Brick, Tile and Pipe Manufacturer do
hereby declare the nature of this invention to be as follows:-
My invention has reference to the pressing machinery or apparatus described and
claimed in the Specification of Letters Patent granted to me bearing date June 30th
1879 No. 2636.
The pressing machinery or apparatus described in the Specification of the Patent
referred to consists essentially in giving a rising and falling motion to the screw of
the pressing machinery by means of a large horizontal driving wheel at the head
of the screw driven in opposite directions by vertical friction discs at opposite sides
of the said driving wheel, the rising motion of the screw being automatically
arrested at the proper time by a weighted sliding brake carried upwards by the
rising motion of the said driving wheel.
My present invention consists of the adaptation to or combination with pressing
machinery of the kind described of a spring brake constructed substantially as
hereinafter described to be used in place of the weighted sliding brake referred to
in the said Specification. The improved brake constituting my present invention
is very simple in construction and efficient in use.
My improved spring brake consists of the following combination or arrangement
of parts. On each end of the cross head of the pressing machinery two uprights
are fixed, one upright of each pair being situated at one side of and near the
periphery of the horizontal driving wheel of the screw and the other upright at the
other side of the periphery of the driving wheel. Each pair of uprights carries a
sliding brake block or plate having on its under side a pressing rib, eyes in the
ends of each brake block being capable of sliding on its pair of uprights. These
brake blocks are situated over and cross the face of the periphery at opposite parts
of the said wheel and by their action bring the rising wheel to rest at the proper
time and prevent it descending. Around the upper part of each of the said
uprights is a coiled spring the top of the spring taking a bearing against a fixed
collar on the upright and the bottom of the spring bearing against the sliding brake
block and tending to press it downwards. Adjustable collars on the uprights act as
stops to limit the descending motion of the sliding brake blocks on their pairs of
uprights.
As soon as the screw of the pressing machinery has risen nearly to the required
height, the friction disc, giving the rotatory motion to the driving wheel in the
direction proper to raise the screw, is withdrawn from the said wheel.
The further
upward motion of the driving wheel carries it against the ribs of the sliding brake
blocks and lifts the said brake blocks upon their uprights and compresses the coiled
springs. By the friction of the crossing brake blocks upon the face of the periphery
of the driving wheel its motion is arrested and the screw brought to rest and held
in its raised position.
By throwing that friction disc by which the descending motion of the screw is
effected into contact with the driving wheel the friction of the brake is overcome
and the said driving wheel and screw descend.
Dated this 3rd day of October 1892.
W. T. WHITEMAN,
Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Pressing Bricks,
Blooks, Tiles, and other like articles.
I JOSEPH HAMBLET, of Piercy Blue Brick, Tile and Pipe Works, West
Bromwich in the County of Stafford, Brick, Tile and Pipe Manufacturer 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 :-
My invention has reference to the pressing machinery or apparatus described
and claimed in the Specification of Letters Patent granted to me bearing date
June 30th 1879 No. 2636.
The pressing machinery or apparatus described in the Specification of the Patent
referred to consists essentially in giving a rising and falling motion to the screw of
the pressing machinery by means of a large horizontal driving wheel at the head of
the screw driven in opposite directions by vertical friction discs at opposite sides
of the said driving wheel, the rising motion of the screw being automatically
arrested at the proper time by a weighted sliding brake carried upwards by the
rising motion of the said driving wheel.
My present invention consists of the adaptation to or combination with pressing
machinery of the kind described of a spring brake constructed substantially as
hereinafter described to be used in place of the weighted sliding brake referred to
in the said Specification. The improved brake constituting my present invention
is very simple in construction and efficient in use.
My improved spring brake consists of the following combination or arrangements
of parts. On each end of the cross head of the pressing machinery two uprights
are fixed, one upright of each pair being situated at one side of and near the
periphery of the horizontal driving wheel of the screw and the other upright at the
other side of the periphery of the driving wheel. Each pair of uprights carries a
sliding brake block or plate having on its under side a pressing rib, eyes in the ends
of each brake block being capable of sliding on its pair of uprights. These brake
blocks are situated over and cross the face of the periphery at opposite parts of the
said wheel and by their action bring the rising wheel to rest at the proper time and
prevent it descending. Around the upper part of each of the said uprights is a
coiled spring the top of the spring taking a bearing against an adjustable collar on
the upright and the bottom of the spring bearing against the sliding brake block
and tending to press it downwards. Fixed collars on the uprights act as stops to
limit the descending motion of the sliding brake blocks on their pairs of uprights.
As soon as the screw of the pressing machinery has risen nearly to the required
height the friction disc giving the rotary motion to the driving wheel in the direc-
tion proper to raise the screw, is withdrawn from the said wheel. The further
upward motion of the driving wheel carries it against the ribs of the sliding brake
blocks and lifts the said brake blocks upon their uprights and compresses the coiled
springs. By the friction of the crossing brake blocks upou the face of the periphery
of the driving wheel its motion is arrested and the screw brought to rest and held
in its raised position.
By throwing that friction disc by which the descending motion of the screw is
effected into contact with the driving wheel the friction of the brake is overcome
and the said driving wheel and screw descend.
I will now proceed to describe with reference to the accompanying drawing the
manner in which my invention is to be performed.
Figures 1 and 2 represent. elevations taken at right angles to one another of the
upper part of a machine or apparatus of the kind described for pressing bricks,
blocks and other articles, to which machine or apparatus my improved brake is

page_text: applied; Figure 3 represents a plan of underside of the same with parts of the
horizontal driving wheel broken away, and Figure 4 represents a side elevation and
end elevation of one of the brake blocks and appliances connected therewith drawn
to a larger scale than the other figures.
The same letters of reference indicate the same parts in the several figures of the
drawing.
с
a is the screw of the press or machine to which a rising and falling motion is
given by means of the large horizontal driving wheel b at the head of the screw,
the said driving wheel b being driven in opposite directions by the vertical friction
wheels c and d at opposite sides of the said driving wheel. These friction wheels
are fixed on the horizontal driving shaft e to which a sliding to and fro motion is
given by means of a hand lever (a part only of which is shown) working in the
grooved collar 9. By sliding the shaft e in one direction, the friction wheel is
brought into contact with the periphery of the driving wheel b and rotation in
the direction proper to raise the screw a given to the said wheel b. By sliding the
shaft e in the other direction, the friction wheel c is removed from the periphery of
the driving wheel and the other friction wheel d at the opposite side brought into
contact with and the said wheel rotated in the direction proper to cause the
screw a to descend as particularly described in the Specification of the Patent
before referred to.
I will now describe my improved brake for automatically arresting the rising
motion of the screw a and for preventing its descent.
h is the cross head of the pressing machinery on each end of which are two
uprights, the pair of uprights at one end being marked i, i and the pair of uprights
at the other end of the cross head being marked k, k (see Figure 3). One upright
of each pair is situated at one side of and near the periphery of the horizontal
driving wheel and the other upright of each pair is situated at the opposite side
of the periphery of the driving wheel. Each pair of uprights is connected
together at top by the cross stay n. The pair of uprights i, i carries the sliding
brake block or plate and the other pair of uprights k, k carries a similar sliding
brake block or plate m, each block or plate having on its underside a pressing rib
marked respectively and m². The ends of each brake block have eyes which
permit of the said block sliding vertically on its pair of uprights. It will be
seen by an examination of the drawing that the brake blocks 7 and m are situated
over and cross the face of the periphery of the driving wheel b at opposite parts
and by their frictional action bring the rising driving wheel b to rest at the proper
time and prevent it descending. Around the upper part of each upright i and k of
the brake mechanism is a coiled spring p the top of each spring taking a bearing
against the adjustable collar g on the upright and the bottom of the spring bearing
against the sliding brake block and tending to press it downwards as best seen in
Figures 2 and 4. Fixed collars r,r on the uprights act as stops to limit the
descending motion of the sliding brake blocks on their pairs of uprights i, i
and k, k.
When the plunger of the press is required to be raised after the brick or article
has been pressed the vertical friction wheel c is brought into contact with the
periphery of the driving wheel as represented and the said driving wheel and the
screw carried by it are raised. As soon as the screw of the pressing machinery
has risen nearly to the required height the friction disc c is withdrawn from the
driving wheel b. The further upward motion of the driving wheel 6 carries it
against the ribs l', m³ of the vertically sliding brake blocks l, m and lifts the said
blocks upon their uprights i, i and k, k and compresses the coiled springs p, p. By
the pressure of the crossing brake blocks l, m upon the face of the periphery of
the driving wheel its motion is arrested and the screw a and wheel 6 brought to
rest and held in their raised positions. After the die has been charged and it is
wished to press the article in it by the descending motion of the plunger on the
screw a, the friction disc d is put into contact with the driving wheel b, when the
friction of the brake is overcome and the driving wheel and screw descend.

page_text: Having now particularly described and ascertained the nature of my inven-
tion and the manner in which the same is to be performed I declare that I claim
as my invention of "Improvements in machinery or apparatus for pressing bricks
blocks tiles and other like articles ";-
The adaptation to or combination with pressing machinery or apparatus of the
kind described, of a spring brake for automatically arresting the rising motion of
the driving wheel carrying the screw of the press or apparatus, the said spring
brake consisting essentially of two brake blocks or plates sliding vertically upon
pairs of uprights and pressed down by coiled springs, the said vertically sliding
brake blocks being situated over and crossing at opposite parts the face of the
periphery of the driving wheel of the screw and acting substantially as herein before
described and illustrated in the accompanying drawing.
Dated the Twenty-fifth day of May 1893.