Year: 1889

page_text: Date of Application, 11th Feb., 1889
Specification Accepted, 23rd Mar., 1889
WO, HERMAN POLTER, blacksmith and fitter, and ERNST ASSMANN, merchant, both
of Leipzigerstrasse 90, Torgau in Prussia do hereby declare the nature of this inven-
tion and in what manner the saine is to be performed, to be particularly described and
ascertained in and by the following statement :-
Our improvements on clay cutters for Brick making machines hereinafter described,
consist principally-contrary to the usual custom-in effecting the motion of the tray,
the cutting and lifting the piece just cut, automatically from the main driving shaft.
The motion of the tray together with that of the piece of clay cut off, is not produced
by the pushing forward of the advancing column of clay, as has been the case up to the
present, but by the automatically running horizontal motion of the tray itself, whereby
the jogging which is very disadvantageous especially in the manufacture of roofing
tiles, hollow bricks and fashioned pieces is avoided.
In studying this object riz. the avoidance of everything that could hinder the con-
tinual advance of the Clay column we have constructed the machine shown in the
drawings figs. 1-6 and hereinafter described.
In order to make our invention more clear, we refer to the accompanying sheet of
drawings, in which similar letters denote the similar parts throughout the different
figures. Fig. 1 shows a side-elevation, fig. 2 a front-elevation of the whole machine
with the cutter at its highest point; fig. 3a side-elevation and fig. 4 a front-elevation
of the machine with the cutter down. Fig. 5 shows the coupling box and fig. 6 the
cooperating coupling disc H.
The clay cutting table is constructed in the usual manner, riz. a fixed table frame A
carrying the rollers and the movable tray B. This tray is however not pushed by
the advancing column of clay, but is set in motion by the Parallelogram CCCC
oscillating on the pivots a abb; on this parallelogram rests the tray B supported by
the feet B¹ B' attached to its sides. By means of this parallelograin which is worked by
an arrangement on the shaft-hereinafter described-a horizontal backward and forward
motion is given to the tray. In order to prevent any vertical motion taking place
the upper surfaces of the plates ( C are curved with radii struck from the centres a a

page_text: Bibl
Further is the possibility of the plate C³ (slipping under the feet B' B' pre-
vented, since the connecting rods (forming together with the frame CC the
parallelogram have a slot in the middle guided by a pin fixed in the side of the tray
frame.
The backward and forward motion of the frame C is caused, as already mon-
tioned, by an arrangement on the shaft . This arrangement con-ists of two blades rel
similar to the blades of the serow in screw steainers, fitted on to the shaft in
opposite directions, so that in turning the shaft, one blade describes the course of
the thread of a right hand screw whilst the other describes that of a left hand
screw. These blades with each revolutions of the shaft pass hy touching the rollers & s'
pushing thereby the parallelogram CCC and with it the tray B alternately
backwards and forwards. These blades will be known in the future in this Specifica-
tion as Motion-blades.
The crankshaft ie on which these motion blades are fitted, is set in motion automa-
tically, causing the cutter to move in an upward—and at the same time the tray B in
a horizontal direction.
The column of clay which is continually coming from the mouth of the brick machine
is carried at first by the rollers rr, further by the rollers until at last it strikes
against the end plate k.
In consequence of the further motion of this clay mass the tray B will be pushed
further to the right (fig. 1) and at the same time the hook i which is fitted on to the
end of the tray. This hook catches on the upper arm of the angle lever 12, the
lower arm of course rises and with it the connecting rod, the lower end of which is
joined on to the block : This block presses on one side against the rod y which is
fastened above to the frame A and at the other end is hell continually against
the block by the spring r and on the other side, in its lowest position, against the
projection on the coupling dise H. The coupling dise H has. hesides this projection
one or several teeth (fig. 6), which on being coupled gear into the teeth of the
coupling box J. The clutch or coupling box (fig. 5) which is fitted en to the
main driving shaft to owing to the pressure of the spring a has a tendency to slip
towards the right. This it does as soon as the block; has been drawn upwards by
the lever 12 and gears into the coupling disc H on the crankshaft te causing it to
revolve with the main driving shaft 10'.
In order that the coupling clutch J may more easily slip along the driving shaft w³,
it is fitted loose on the same and receives its motion from the coupling cross which
is firmly fixed to the shaft (fig. 5) by means of the four pins .r. These pins have
a ball joint on each end. Each pin is jointed on the one hand into one end of the
coupling cross r on the other, info the projection m on the coupling disc J.
When the clutch is geared into the coupling disc by the pressure of the spring a
the pins will be inclined a little towards the shaft axle and for this reason the ball
and socket joints are used.
The crank is connected with the cutter D E by means of the connecting rod G
and an universal joint.
The motion of the cutter D E is governed by the two guides B* B³, which are
elongations of the frame of the tray B. The construction of the cutter will be
more clearly seen in figs. 2 and 4. D is the upper cutter frume containing on the
top corners the arrangements oo which stretch the wire of tight. To its under
side are fitted the spring catches p which on the upward motion of the frame E
snap under the projections e e' of the same, coupling the two frames D and E
together whereby the cutter D is of course driven upwards by the connecting rod G.
On the guides B B are two projections n n (one on each guide) with their
upper sides sloping-which arrest the spring catches on the downward motion of the
coupled frames when they have reached a certain point. As soon as the spring catches pp
come in contact with the sloping surface of the projections an² on the guides they
are pressed outwards and let the frame 1 loose which remains resting on the
notelics of the guide B B (Fig. 4) while the under frame E in consequence of
the further revolving of the crank sinks still lower.

page_text: As soon as the under frame E rises high enough again the spring catchos p p¹ snap
into the projections e e¹ and the upper frame is of course again coupled.
In order to place the piece of clay cut off by the cutter at a convenient distance
that through
from the same, the end plate k is fitted on to the tray B in such a manner,
the motion of the same it is laid back in a horizontal position. In order to effect this.
two long narrow iron plates ff are affixed to the tray one on each side. These are
fastened at one end to the table frame A by means of the pin moving in the slit g
and at the other are connected together by the rod d which moves in the horizontal
slots made in the tray frame B. In the standing position of the end plate k the small
foot k', which is firmly fixed to the same, is pressed down on to the bar d by means of
the spring . Now when the tray is moved to the right as far as the length of the slit g
will allow it, the left end of the slit will strike the pin h, and in consequence of the
further advance of the tray B the bar d will be pushed under the foot of the end-
plate k which immediately falls backwards owing to the pressure of the spring 1.
By this means the piece of clay cut off becomes free and can be conveniently taken
away from the tray.
It only remains now to describe the so called mouse-teeth arrangement for rounding
or finishing off the rough edges of the newly cut off piece. This consists of the levers 33
fixed to the sides of the tray and working under the influence of the spring; of
the arms 66 carrying the bars 7 7 7 7 and of the angle lever 45 which turns on a
pivot fixed into the frame of the tray B B and has a nose shaped projection on its
upper end.
In consequence of the pressure of the spring; the nose 8 is held against the sides of the
frame which is moving up and down and at the same time the bars 7777 are held against
the under side of the clay column which is about to be cut, so that the wire o, o cuts
through the clay direct on to the bar and in this manner is hindered the formation of
so called mouse teeth or in other words a clean cut is produced. When however the
cutter has reached its highest point, the projections 9 on the frame D come under the
nose 8 and push the lever 5 towards the left; in consequence of this the spring will he
stretched and the bars 7 777 held away from the clay mass.
As seen from this description of the different arrangements the machine will work
in the following manner :
At the beginning of the work the machine stands in the position shown in fig. 1.
The column of clay comes continuously from the month of the brick machine and
passes next over the rollers of the fixed frame A. It then comes on to the rollers
of the movable tray B. When it has got as far as the end plato k, which is
held upright by the side iron plates/" and the cross bar d, it will push the tray B in
a horizontal direction. The movement of the tray causes the coupling clutch J to gear
into the disc H in the previously described manner.
The crank shaft w is then of course driven round by the main driving shaft and the
cutter is drawn down by the motion of the crank. As soon as the piece is cut off the
tray B is moved towards the right by means of the motion blade c¹ acting on the rollers ⟫
of the parallelogram CCCC. In this manner sufficient room is left to be con-
veniently enabled to take up and remove the pieces or bricks just cut off. As the
cutter is decending the thumb or projection 9 of the upper frame D is removed from
under the nose 8 of the angle lever 45, and the spring pulls the lever together
In con-
with the cross-bars 7 7 7 7 against the under surface of the clay mass.
sequence of this the cutter wires o o descend cutting through the clay directly on
to the bars d d which are pressed against the under silo of the clay making of
course a clean cut.
As soon as the piece is cut off, the upper frame D will be uncoupled from the
under frame E by means of the projections n n pressing the spring catches p and pl
apart in the manner already described. The upper frame D then remains resting
on the projections 7 7 of the guides B B whilst the under frame E is drawn
down by the motion of the crank. This causes the cutter D to remain still for a
little time during which pause the workman has time to remove the cut off bricks.

page_text: At a certain point of the ascension of the under frame it becomes of course again
coupled with the upper frame.
During this time the tray B has moved forwards and with it the side iron platesƒƒ^
which are held fast at last by the pins in the fixed frame A causing the bar d
to be pushed from under the projection on the end plate . This end plate & will
then be passed down into a horizontal position through the pressure of the spring
on the foot k¹.
Here upon the other motion-blade c¹ drives the parallelogram 0 C C C and with
it the tray B back.
The coupling has now made one revolution, the projection n on the same has
again come round and presses against the block driving the clutch J backwards
and uncoupling the crank shaft in from the main driving shaft w
When the pieces ent off have been taken away and the clay column hus again
reached the endplate & the operation just described takes place again.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare tit
what we claim is :
1.) In Clay cutting machines driven from the main driving shaft: the combination
of a moveable tray "driven backwards and forwards by a swinging frame which
receives its motion from the blades ce fixel on to the crank shaft, with the antomatio
coupling and uncoupling of the crank shaft with the main driving shaft by means
of the motion of the said tray, substantially and for the purpose as described.
2.) The working of the ond plate & also caused by the motion of the tray, sub-
stantially and for the purpose as described.
3.) The working of the cross-hars 7777 for the purpose of transmitting the necessary
motions to the tray and cutter, substantially and for the purpose as described.
Dated Berlin. this 8th day of kobewarv 1889
By A. KUHNT & R. DEISSLER,
38, Alexander Strusse, Berlin C., Germany,
Agents for Applicants.