Year: 1891

page_text: Date of Application, 23rd Mar., 1891-Accepted, 9th May, 1891
embodying my invention.
Figure 2 is a vertical transverse section taken on the line x, x, of Fig. 1.
Figure 3 is a side view of the separator.
Figure 4 is a front view of the same.
Figures 5 to 11 are detail views of various parts.
The pug-mill proper is divided by a partition into two separate compartments A, B,
through each of which passes a square shaft C, C1, carrying rotary knives D, and
wings or feeders E, and in front of the mill is mounted what I term a "separator" F,
for removing stones and other foreign substances.
The separator consists of preferably three hexagon plates f, having a boss in the
centre, and which are keyed or otherwise secured to a shaft G. To each side of
these plates are secured by screws or otherwise bars e, formed with a groove e¹,
throughout their length. (See Figs. 2 and 9.) Over these plates and bars are
passed rings d, having a flange d', and a small projection d', that fits the groove e',
in the bars e. The projections d², are inserted into the grooves of the bars e,
alternately, so that the strain is distributed equally on each side of the plates f,
and the rings are placed upon said bars so that the flange of one ring comes into
contact with the next adjacent plate. The separator has the appearance of a drum
having a series of projecting flanges, the space between the rings when in operation
taking up the clay from the mill (free from stones) and carrying it to be fed to the
brick or other machine.
A series of fingers or scrapers H, are arranged upon a square shaft h, and are
capable of being adjusted so as to scrape out all the clay taken up by the separator
or only a portion thereof, according to the quantity it is desired to be delivered to
the brick-machine.
In the drawings I have shown the square shaft h, as being carried by a saddle I,
having a boss in its centre through which passes a screw J, provided at its upper
end with a hand-wheel j, and at its lower end held by collars k, to a cross-bar K,
that extends from one side to the other of the separators and bolted thereto, so that
by turning the hand-wheel j, the fingers can be adjusted so as to regulate the
amount of clay fed to the brick-machine; or the fingers might be operated by a
lever, as shown in dotted lines in Fig. 3, in which case they would be swung to or
from the rings to regulate the amount of clay scraped out.
Under the rear portion of the separator, I form a box-like receptacle L, the
lower portion of which is closed by a Hap or gate 1, which when the mill is in use is
supported by a prop M, and on each side is an opening m, closed by a plate. The
stones and other foreign matter are collected in this receptacle, and when full or
when desired is emptied by removing the prop M, thus allowing the flap l, to fall,
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page_text: Ine plates are then removed from the openings m, and pars inserted to 100
clay, which then falls down.
The knives D, are set on an angle and are formed rounding at the point 1, which
cuts the clay, and they are also provided on one side with small projecting cutters 2,
which very materially assist in mixing the clay and rendering it plastic. The
inner end of each knife is formed with a divided box 3, by means of which it can
be readily placed upon the shaft or removed therefrom.
The wings or feeders E, are curved pieces of metal adapted to force the clay
forward, and they are also provided with a divided box for securing them to the
shaft.
On each shaft C, C¹, is secured a collar c, next to the frame, so as to prevent the
clay from working out.
Upon one end of each of the shafts C, C', G, is secured a cog-wheel N, and
connected by pinions, so that when motion is imparted to the mill all the shafts are
rotated in the same direction.
Motion is imparted from any suitable source to the drum P, secured upon a
shaft Q, carried by suitable bearings. Upon this shaft is also mounted a pinion R,
in gear with a cog-wheel S, on a shaft T, that also carries a pinion U, in gear with
a cog-wheel N, on the shaft C. The pinion V, communicates motion to the
cog-wheel N, on the shaft C', and the pinion W, communicates motion to the
cog-wheel N, on the shaft G.
The operation is as follows:- -The mill being put into motion, clay is fed into the
rear compartment at the end A', and is by the knives D, on the shaft C, carried
forward to the end A2, where it is forced by the wings or feeders E, through the
opening A³, into the front compartment. It is then by knives D, on shaft C¹,
carried to the end A, and is forced by the wings or feeders E, towards the
separator F, and taken up between the rings d, and carried round to the scrapers H,
and being removed falls into the brick-machine, the stones and other foreign matters
being retained in the box L.
It will be seen that by the construction of the knives, the clay is well mixed
and will be rendered very plastic, and the stones being removed by the separator a
better quality of brick is obtained and the moulds cannot be broken, as is often
the case with mills of the ordinary construction, and by having the bearings of
the shafts arranged at a short distance from the sides of the mill, the clay cannot
work into them, thus preserving the bearings.
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 combination with a pug-mill, a separator consisting of a series of flanged
rings mounted upon a shaft, the clay being taken up in the spaces between said
rings and removed by scrapers, substantially as set forth.
2. A separator consisting of hexagon plates f, mounted upon a shaft, cross-bars e,
each having a groove e¹, rings d, having a flange d³, and a small projection d³,
arranged substantially as shown and described.
3. In combination with a separator having a series of flanged rings mounted
substantially as described, a series of scrapers H, mounted upon a square bar h, and
capable of adjustment, substantially as shown and described.
4. The scrapers H, mounted upon a square bar h, the saddle-shaped frame I,
screw J, wheel ;, and cross-bar K, in combination with a separator consisting of a
series of flanged rings, substantially as set forth.
5. In combination with a pug-mill and separator, a stone-receptacle L, the
bottom of which is closed by a flap 1, and side openings m, covered by plates,
substantially as and for the purposes set forth.
6. A pug-mill divided into two longitudinal compartments, each having a shaft
passing through it, upon which are mounted knives and feeders, and a separator in

page_text: front of said mill, the shafts of which are driven by a train of gear N, U, V, W,
cog-wheel S, pinion R, and pulley P, substantially as set forth.
7. A pug-mill consisting of a rectangular receptacle divided into two longitudinal
compartments A, B, by a partition that extends nearly the whole length of said
receptacle, each compartment having a shaft passing through it, upon which shafts
are mounted knives and feeders arranged so that the clay being fed at one end of
the rear compartment A, is forced to the other end of said compartment, and thence
by the feeders E, through the opening A³, into the compartment B, and then by
the knives forced to the other end of said compartment and out of the mill by the
feeders E, on the end of said shaft, substantially as shown and described.
Dated this 28th day of February 1891.
WILLIAM AGUSTUS PARRY.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.