Process of and Apparatus for Depositing Colours for the Patterns of Cement and other Slabs.
Year: 1898

page_text: Date of Application, 7th May, 1898-Accepted, 27th Aug., 1898
COMPLETE SPECIFICATION.
Process of and Apparatus for Depositing Colours for the Patterns of
Cement and other Slabs.
I, PAUL WERNICKE, of 9, Augenstrasse, Eilenberg, in the Empire of Germany,
Merchant, do hereby declare the nature of my invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement;-
The present invention consists of a process for depositing the colours, which
are to form the pattern of the cement or other slab to be moulded, evenly on
the mass. According to the invention the colours are gently loosened at a point
immediately above or at the plane in which the said colours leave the pattern
box.
And in order to carry the process into practice, a colour box is employed which
is provided with partition walls corresponding to the pattern to be formed in
the well known manner, said box being however deeper than usual and of the
construction hereinafter described.
These boxes are made with a series of partition walls and an opening at the
bottom, the said partition walls forming the means for restricting each colour
to its respective area, and thus forming the pattern on the slab which is afterwards
finished in the well known manner. In working boxes of this kind difficulty has
hitherto been experienced in getting the layer of colour properly out at the bottom
of the box, so as to form an even layer, of the various colours, each space and all
interstices being properly filled out by the proper colour. If the colour were
pressed out from above, it got caked or clogged in the smaller interstices of the
pattern box and thus the pattern produced was incomplete, in any case only
quite dry colours could be employed with any chance of success.
According to the present invention the colours are caused to fall evenly in a
layer of the desired thickness by gently agitating them at the place at which
they leave the box, by means of moveable gratings or sieves as herein after particu-
larly described and pointed out in the claims.
And in order to render the present specification more easily intelligible reference
is had to the accompanying drawings in which similar letters of reference denote
similar parts throughout the several views:-
Fig. 1 plan of the box with the gratings removed, Fig. 2 is a plan of the
gratings for the various parts of the pattern, Fig. 3 a plan of the box with the
gratings therein, Fig. 4 is a vertical section through the box with the gratings
raised, Fig. 5 a sectional elevation of the box with the grating down in its lowest
position, Fig. 6 a sectional elevation of a box having a modified form of grating
said grating being in its raised position, Fig. 7 similar view to that of Figure 6
with the grating lowered and Fig. 8 two part sectional elevations showing a
modified form of grating in its raised and lowered positions respectively.
As will be seen from Figures 1 to 5, the box is divided into a series of compart-
ments by means of walls s, the horizontal cross sectional area of which forms

page_text: the pattern. In the open bottom of the box a series of wires or bars d d arc fixed
a short distance from the lower edge of the same. In each compartment thus
formed a frame c (Fig. 2) fits consisting of a light flat metal rim having bars
stretched thereon as at said bars running parallel to those of the box and
arranged to lie between the same and in a plane therewith, when the said frames e
are in position in the box. Between the wires, the lower edges of the frames
are provided with a series of grooves 11, which engage over the wires or bars of
the box and permit the bars and wires of the frames to pass down into the
plane of the said box bars as seen at Figure 5. Each frame e is connected by
arms b to a vertical rod t extending upwardly and passing through the cover m
fixed at the upper part of the box, and then through a moveable plate n in which
all the said rods are fixed by means of nuts. The plates m and n are both pro-
vided with air-holes o and the upper plate n has a handle g by means of which
it, and with it the frames e may be raised and lowered. The box has handles h
and a flange z on which it may rest on suitable bearings, when not in use so as
to prevent the sharp lower edges of the box from getting blunt, owing to the
weight of the box continually resting on them.
In operation the compartments are filled with their respective colours, the
pattern box is then placed on the mould and the frames moved gently up and down,
by which means the colours in the compartments will be loosened and fall through
the gratings in an even layer and at all parts of the pattern.
The gratings are advantageously so dimensioned that when the gratings of
the frames are in their lower positions and between the grating bars of the bottom.
of the box, no colour will come through, so that in this position they form a
bottom to the box, which may be moved from place to place without losing the
colour. As soon as the frames are raised the colour will be loosened and will
fall through between the grating bars of the bottom of the box. Stops are
formed inside the box at the upper parts to prevent the plate n from being raised
too high, and the air holes o prevent the agitation of the colours within the box,
on the movement of the frames.
In the modification shown at Figures 6 and 7, the frames e are provided with
a double row of wires or bars the second row d² being above the first row d¹ and
the depressions in the lower edges of the frames being deeper so as to allow
the lower row of bars to pass between and below the bars of the box and extend
almost to the level of the lower edge of the box when the frames are depressed
as shown at Figure 7. By this means the colour ejected from the box will be
pressed down by the lower row of bars and to a certain extent fixed in position.
In the modification shown at Figure 8 the same effect is attained by means of
flat bars u on the frames, which pass down in a similar manner between the round
bars of the bottom of the box. Obviously flat bars might also be employed at
the bottom of the box. Then again instead of a series of bars, sieves might be
substituted, the degree of coarseness or fineness of said sieves being so chosen
that when the sieves are down one on the other a bottom would be formed to the
box similar to that at present formed by the bars. Instead.of placing the wires
or bars as described with reference to Figures 1 to 5 the same might be crossed,
without departing from the nature of my invention.
I wish it to be understood that I do not confine my invention to the particular
construction shown as I believe it is broadly new to provide means in connection
with pattern boxes for colours, for agitating the contents of the same at or about
the plane at which the said colours leave the box.
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: A process for evenly depositing the colours to form the pattern on cement
and other slabs, which consists in gently loosening or agitating the same at or
about the plane at which they leave the pattern box and at will closing the bottom

page_text: of the pattern box to prevent the colour from passing out at the bottom substan-
tially as described.
2: In a pattern box for use in connection with the manufacture of cement
and other slabs, the combination of a series of compartments for the various colours
and means at or near the bottom of the said box for agitating the said colours
approximately at the plane in which the same leave the box substantially as
described.
3: In a pattern box the combination of a series of bars stretched across the
same near the bottom, and a series of moveable bars in each compartment, to
move vertically between said box bars and means for effecting such movement
substantially as described.
4: In a pattern box having a series of colour compartments, the combination
of a series of bars stretched across the bottom of said box, a series of frames in
said compartments having their lower edges cut out to pass over said box bars
and having bars to pass between said box bars and means for vertically moving
said frames substantially as described.
5: In a pattern box, the combination of a series of bars stretched across the
same approximately at the bottom thereof, a series of frames in each compart-
ment cut out as specified, and having each a series of bars to pass between said
box bars, a cover fixed in the upper part of said box, a series of vertical rods
attached to said frames and passing through said cover, means for connecting
said rods outside said cover and for moving the same up and down substantially
as described.
6: The combination of a pattern box having colour compartments, a series
of bars stretched across the same approximately at the bottom, a series of vertically
moveable frames in said compartments, having the lower edges recessed as speci-
fied and having bars to fit between said box bars, said bars being of such thickness
as to prevent the colour from falling through, when they are lying between the
bars of the box substantially as described.
7: In a pattern box, the combination of a series of bars. across the same
approximately at the bottom, a series of frames mounted in the compartments
and having recessed lower edges as specified, and having each two rows of super-
posed bars to fit between the box bars and means for vertically moving said frames
in the manner and for the purpose substantially as described.
Dated this 7th day of May 1800.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.