IMPROVEMENTS IN BRICK PRESSES
Year: 1884

page_text: I, EMIL KRETZNER Brick Kiln Owner in Kunzendorf near Sorau (Germany)
do hereby declare the nature of my said invention for IMPROVEMENTS IN BRICK
PRESSES and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
The mouth piece for making rebate-bricks in clay-cord presses consists of an iron
plate a (Fig. 2) which is fitted into the press opening of a box c made of wood and
fastened by means of screws b, of a steel plate d; which is fastened on to the
wooden box and of a metal plate revolving or movable in the point e and which is
shaped to answer the purpose it is intended for. The dotted lines (fig. 1) represent
the back part of the mouth-piece. By means of the strongly conical openings made
to the right and to the left at the back of the mouth-piece, a greater quantity of
clay is conducted to these two sides on which the greatest friction takes place, and
hereby is the friction overcome, so that the clay-cord without breaking always
comes uniformly and neatly out of the mouth-piece. The most important part of
the mouth piece is the metal-plate f shown in design.
This metal-plate has on the lower half of its inner side a semicircular elevation g,
which is intended to form the flute in the rebate-brick and the straight surface h of
the upper half of the metal-plate is for the purpose of pressing down the vaulted
and covering middle part d of the rebate-brick and to shape it straight and flat as
soon as the middle part has reached the length required. The screw i serves to
guide the metal-plate in the slit-shaped opening k, and has at the same time to
prevent that the metal-plate is pressed off the mouth-piece by the outcoming
clay-cord. The adjoint-piece of the metal-plate with the two openings m is
intended for fixing on a handle of any length as may be required.
The making of rebate-bricks by this mechanism is done in the following manner:
The metal-plate fis raised so bigh by the handle fixed on to the adjoint-piece l,
that the outside of the metal plate knocks against the screw n provided with a
square head and projecting in the thickness of the metal-plate, and likewise the slit
opening against the lower side of the screw i. Owing to this position the semi-
circular elevation g covers the opening for the nose and forms at the same time the
flute e of the vaulted middle part on the rebate-brick.

page_text: As soon as the outcoming clay-cord with the vaulted middle part has reached the
requisite length, the metal-plate is pressed down by means of the handle till the
under outside of the metal-plate has touched the square head of the screw o or till
it rests on the latter.
By means of this motion, which is shown by the dotted lines, the surface h
presses down the vaulted middle-piece d on the rebate-brick and forms the brick in
the middle straight and flat, the nose-cord coming out at the same time.
The rebate-brick that has left the mouth-piece in this manner comes on to one of
the common tile-cutting apparatuses and is cut on it rectangularly by the wires
stretched parallel at proper length spaces, and by the aid of a correspondingly
hollowed out frame lifted off from the cutting apparatus, which is in hinges, then
the brick-board is laid on the under side of the rebate-brick and the latter is turned
in the hand upwards.
The nose-cord is cut off in the required length, by a wire fixed in the place best
adapted whilst the brick is being moved away and falls off and under the cutting
apparatus the moment the rebate-brick is lifted off.
In the meantime the same manipulation recommences.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is,
On the die of a brick or tile machine the plate f, by the turning or sliding of
which the opening of the mouth-piece is altered as herein set forth and shewn in
the drawing whilst the clay-cord is coming out, and the middle flute on the
(parallel rebate-brick is pressed down, so that the rebate-brick has a flat upper
surface, and a nose is formed below.
Dated this 8th day of December 1884.