Improvements. in. Machinery for Moulding Bricks.
Year: 1893

page_text: Date of Application, 9th Nov., 1893
Complete Specification Left, 3rd Aug., 1894-Accepted; 8th Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements. in. Machinery for Moulding Bricks.
I, EBENEZER BREETHING, Manager of Dunton Green Brick and Tile Works,
Sevenoaks, in the County of Kent, 'do hereby declare the nature of this invention
to be as follows-:-
In the Specification of a former Patent No. 7432 in the year 1891 granted to me
I described a machine having a pressing box from which the clay was forced into
the moulds.
This invention relates to machinery of this class and has for its object to allow
the free ingress and egress of air from the pressing box so as to prevent its getting
mixed with the clay and being forced by the plunger into the moulds thereby
spoiling the bricks.
For this purpose I make an opening or openings in the front of the pressing box
each opening being provided with a slide working in it. The slide is slotted to
receive a pin upon the plunger working in the box. During the first portion of the
descent of the plunger the air in front of it can freely escape through. the opening
and slot until the plunger reaches the solid portion of the slide. At this, time the
pin upon the plunger, comes to the end of the slot so that during the remainder of
the motion of the plunger the slide is carried with it. Immediately therefore the
plunger begins to rise again the air can enter the box beneath. it through the slot
and opening. After a time the plunger in rising comes to the end of the slot and
afterwards carries the slide up with it. A screw is preferably provided for
adjusting the length of the slot.
Dated this 8th day of November 1893.
COMPLETE SPECIFICATION.
Improvements in Machinery for Moulding Bricks.
I, EBENEZER BREETHING, Manager, of Dunton Green Brick and Tile Works,
Sevenoaks, in the County of Kent, 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 :-
In the Specification of a former Patent No. 7432 in the year 1891 granted to me
I described a machine having a pressing box from which the clay was forced into
the moulds.
This invention relates to machinery of this class and has for its object to allow
the free ingress and egress of air from the pressing box so as to prevent its getting
mixed with the clay and being forced by the plunger into the moulds thereby
spoiling the bricks.
For this purpose I make an opening or openings in the front of the pressing box
each opening being provided with a slide working in it. The slide is slotted to
receive a pin upon the plunger working in the box. A screw is preferably provided
for adjusting the length of the slot.
Figure 1 is a front view of the pressing box and Figure 2 is a section on the
line Figure 1.
a is the front of the pressing box and a' a' are the openings in it. b b are plates
carrying the slide 6* and working in the guides 'b' and c c are adjusting screws

page_text: carried by them. d is the plunger in the box and d¹ is a block working in the
opening a² and secured to the plunger by the pin d. e is a metal plate fixed in the
box and covering the lower part of the opening a
In order to make the construction clearer the left hand slide (Figure 1) is shewn
in its highest position and the right hand slide in its lowest position but it is
to be observed that when at work the slides are always at the same, height
moving together.
During the first portion of the descent of the plunger d the air in front of it can
freely escape through the opening a' and slot in the plate b until the plunger
reaches the slide 6*. At this time the block d' upon the plunger d comes to the
end of the slot so that during the remainder of the motion of the plunger d the
slide b is carried with it. Immediately therefore the plunger begins to rise again
the air can enter the box beneath it through the slot in the plate 6 and opening a'.
After a time the plunger d in rising comes to the screw c at the end of the slot and
afterwards carries the plate b and slide 6* up with it.
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 :-
.
1. In pressing boxes of the class referred to the means for allowing the air to
escape substantially as described.
2. Pressing boxes substantially as described and shown in the drawings.
E. BREETHING.