IMPROVEMENTS IN CLAY, MORTAR, AND OTHER MILLS FOR CRUSHING, GRINDING, PULVERIZING, AND BLENDING DRY OR PLASTIC MATERIALS
Year: 1878

page_text: LETTERS PATENT to Richard Cosslett, the younger, of Elgin Park, Redland,
Bristol, for the Invention of "IMPROVEMENTS IN CLAY, MORTAR, AND OTHER
MILLS FOR CRUSHING, GRINDING, PULVERIZING, AND BLENDING DRY OR
PLASTIC MATERIALS.”
Sealed the 16th July 1878, and dated the 6th April 1878.
PROVISIONAL SPECIFICATION left by the said Richard Cosslett at the Office
of the Commissioners of Patents on the 6th April 1878.
RICHARD COSSLETT, the younger, of Elgin Park, Redland, Bristol. "IMPROVE-
MENTS IN CLAY, MORTAR, AND OTHER MILLS FOR CRUSHING, GRINDING, PULVERIZING,
AND BLENDING DRY OR PLASTIC MATERIALS."
My Invention relates to machinery or apparatus for grinding, pulverizing, or
mixing either dry or moist clay, materials for mortar, flints, and other substances,
and for separating the fine particles from the coarser.
In carrying out my Invention I proceed mainly as follows:- -I employ a circular
pan with a flange for very soft materials, but for stiff plastic substances and dry
materials the flange may be removed and a level plate used. Two stationary rollers
of suitable weight are placed some distance apart in the said pan or on the plate,
which is made to revolvo by a circular rack and pinion, to which motion is imparted
by a pulley, strap, and countershaft. The pan is supported by a number of travelling
friction rollers, which roll upon a circular rail provided with flanges resting on the
ground. The friction rollers are placed and roll between a projecting ring or rail
underneath the pan, and a circular ring or rail with flanges resting on the ground.
The friction rollers are guided and kept in their proper places by radiating arms.
One end of each arm passes through each friction roller and forms the axle thereof,
the other end being fastened to a plate which revolves around a vertical centre
shaft held in a fixed position by brackets which extend and are bolted to a supporting
rail with flanges underneath the friction rollers. A vertical centre shaft is used to
retain the revolving pan or plate in position. To reduce the friction a number of
0ll....מ

page_text: travelling friction rollers are placed between the socket of the pan or plate and the
centre shaft. Upon the top of the vertical centro shaft a cross bar is placed with
guides at each end to retain and guide a spindle of stationary rollers, allowing such
rollers to revolve on their spindles, and to rise and fall as required.
The separating or screening is accomplished by placing on the revolving plate or
pan a perforated scraper or screen at a suitable distance in front of a plain scraper,
the perforated and plain scrapers being at suitable angles, so that on the materials
being brought against them by the revolving pan or plate the fine particles pass
through the openings of the perforated scraper or screen, then against the plain
scraper, and are expelled by it off the plate or out of the pan. The coarser particles
are retained in front of the perforated scraper or screen, and directed into the centre
of the pan to be further operated upon.
Other scrapers may be used to act in connection with or independently of the
separating scraper or screen, and more or less in number, as may be required.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Richard Cosslett in the Great Seal Patent Office on the 5th October
1878.
RICHARD COSSLETT, the younger, of Elgin Park, Redland, Bristol. "IMPROVE-
MENTS IN CLAY, MORTAR, AND OTHER MILLS FOR CRUSHING, GRINDING, PULVERIZING,
AND BLENDING DRY OR PLASTIC MATERIALS."
My Invention relates to machinery or apparatus for grinding, pulverizing, or
mixing either dry or moist clay, materials for mortar, flints, and other substances,
and for separating the fine particles from the coarser.
Fig. 1 represents a plan of friction or live rollers and other parts underneath the
pan or plate.
Fig. 2 represents a pan or plate with scrapers and perforated scraper or screen,
and other parts.
Fig. 3 represents a section of the pan with the other parts.
In carrying out my Invention I employ a circular pan A with a flange B for soft
materials, but for stiff plastic substances and dry inaterials the flange may be
removed and the level plate C used. Two stationary rollers D of suitable weight
are placed some distance apart in the pan A or on the plate C, which is made to
revolve by a circular rack E and pinion Fx, to which notion is imparted by
pulley F and strap and countershaft G. The pan is supported by a number of
travelling friction or live rollers H, which roll upon circular rail I provided with
flanges J resting on the ground K. The friction or live rollers H are guided and
kept in their proper places by radiating arms M. One end of each arm passes
through each roller Hand forms the axle N. The other ends are fastened to a
plate which revolves around a vertical centre post P held in a fixed position by
brackets Q, which extend and are bolted to the supporting rail I with flanges.J
-

page_text: underneath the friction or live rollers H. The vertical centre shaft P is used to
retain the revolving pan A or plate C in position. To reduce the friction a number
of friction or live rollers R are placed between the socket of the pan A or plate C
and the centre shaft P. Upon the top of the vertical centre shaft Pa cross bar S is
placed with guides T at each end to retain and guide the spindle U of stationary
rollers D, allowing the rollers D to revolve on the spindle U, and to rise and fall as
required.
The separating or screening is accomplished by placing on the revolving plate C
or pan A the perforated scraper or screen V at a suitable distance in front of a plain
scraper W. The perforated scraper V and plain scraper W are set at suitable angles,
so that on the materials being brought against them by the revolving pan A or
plate C the fine particles pass through the openings of perforated scraper or screen V,
then against the plain scraper W, and are expelled by it off the plate or out of the
pan. The coarse particles are retained in front of the perforated scraper or screen V
and directed into the centre of the pan A to be further operated upon.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed or carried out in practice, I
would have it understood that I do not restrict myself to the adoption of the exact
limits, details, or configuration of the parts I have herein-before described and shewn
in the accompanying Drawings, as the same may of course be varied or modified
without in any way departing from the essential character of my Invention; what
I do claim as secured to me by the said Letters Patent being as follows:
1st. The general arrangement, substantially as herein shown and described.
2nd. The adoption of the friction or live rollers H under the pan or plate,
substantially as herein shewn and described.
3rd. The central arrangement P, S, T, substantially as herein shown and
described.
4th. The use or adoption of friction or live rollers R around the centre post P,
substantially as shown and described.
5th. The adoption or use of the perforated scraper or scrapers, or screen or screens,
substantially as shown and described.
6th. The adoption and use of the level plate C, substantially as herein shown
and described.
In witness whereof, I, the said Richard Cosslett, the younger, have hereunto
set my hand and seal, this First day of October, in the year of our Lord
One thousand eight hundred and seventy-eight.
Witness,
JAMES GRIFFITHS,
Stokes Croft,
Bristol.
RICHARD COSSLETT, JUN". (L.S.)