AN IMPROVED CRUSHING MACHINE
Year: 1876

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for the Invention of
AN IMPROVED CRUSHING MACHINE." A communication from abroad by
Fidéle Motte, of Dampremy, Charleroi, Belgium.
Sealed the 4th August 1876, and dated the 7th March 1876.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 7th March 1876.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED CRUSHING MACHINE." A com-
munication.
The said Invention relates to a machine for crushing hard substances, and in
which the crushing action is obtained by giving mechanically an oscillatory and
circular motion to a device called a pear placed in a tub, after the manner of a
laboratory pestle and mortar, in order that the materials introduced into the ring-
shaped space between these two organs may be constantly and progressively crushed
by the successive contact of all the points of the pear surface with all the points of
the tub surface.
The said tub is provided at its lower part with an opening, by which the powdered
materials are carried out from the apparatus uninterruptedly in consequence of a
continual feeding.
The pear and, tub are made of hard cast-iron or steel, or they may be of millstone,
marble, granite, or porcelain for substances which are injured by contact with
metal.
Upon a strong foundation is fixed a cast-iron frame, which bears two dies, wherein
a vertical shaft is arranged; this shaft carries a conical wheel or a pulley, which
pulley by its thickness and weight serves as a fly wheel. The lower part of this
shaft bears an excentric wheel or a short, crank, which is fitted upon the upper end
or the part which forms the stalk of the pear. The lower part of the pear rests
centrally upon a fixed or movable pivot fastened to the frame of the machine. The
tub, which is without a bottom and in which the pear works, is provided in its
inside with several smooth or ribbed pieces, which may be easily renewed when
necessary.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Robert Lake in the Great Seal Patent Office on the 6th
September 1876.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED CRUSHING MACHINE." A com-
munication from abroad by Fidéle Motte, of Dampremy, Charleroi, Belgium.
The said Invention relates to a machine for crushing hard substances, and in
which the crushing action is obtained by giving mechanically an oscillatory and
circular motion to an organ called a pear placed in another organ called a tub, after
the manner of a laboratory pestle and mortar, in order that the materials introduced
into the annular space between these two organs shall be constantly and progressively
crushed by the successive contact of all points of the pear surface with all the points
of the tub surface.
The said tub is provided at its lower part with an opening, by which the powdered
materials are carried out from the apparatus uninterruptedly in consequence of a
continual feeding.
The pear and the tub are made of hard cast-iron or steel, or of millstone, marble,
granite, porcelain, for substances which would be injured by contact with metal.
In the accompanying Drawing I have shewn different types of the oscillatory
crusher.
Figure I. shows the said apparatus specially designed to break up large stones
into very small fragments. Upon a strong foundation A is fixed a cast-iron frame B,
with two bearings C and C, in which a vertical shaft D is held. This shaft, as
shown in Figure II., carries a conical gear wheel E, and in Figures I. and III., a
pulley E, which pulley serves at the same time as a fly wheel. The lowest part of
this shaft D bears an excentric wheel F, Figure I., or a short crank F, Figure III.,
which is fitted upon the upper end of the forming stalk of the pear G, Figures I.,
II., III., which pear, as shewn in Figures II, and III., fills nearly the inside
of the mortar. In Figure I. the lower part of the pear rests by its centre upon
a fixed pivot H, solidly fastened to the frame of the machine. In Figures II. and
III. this pivot H is moveable, and rests upon a lever I, the extremity of which
lever is held by the shaft and the screw J, which permits the raising or lowering of
the pear to regulate the crushing. For this purpose the lower end of the shaft D
is provided with a strong stud, which in Figures I. and II. is fitted but not fixed in
a cavity formed in the centre of the excentric wheel. In Figure III. the entire
weight of the shaft D is borne by the pear, with which it rises and descends, sliding
in the bearings C, C¹. The tub K, Figure I., which has no botton, and in which the
pear works, is provided internally with smooth or ribbed pieces, which may be
easily renewed. In Figures II. and III. this tub K has the appearance of a mortar,
open at its bottom in order to let the crushed materials be carried out.
materials are carried out as soon as prepared by passing down the pipe L, which
traverses in a cage the holder H.
These
Figures II, and III. show a mortar made in several pieces, to be fitted together
easily, and to permit adjustment and renewal of the parts which wear out the
quickest.
Figure II. shows a crusher, which also serves as a breaker.
Figure III. shows a crusher more especially designed for reducing matters into
impalpable powder.
Figure IV. is a sectional view on the line M, N, of Figure I.
Figure V. is an exterior plan of Figure II.
Figure VI. is a sectional view, on the line O, P, of Figure III.
Having thus fully described the said Invention, as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim the machine consisting of the crushing or pulverizing mechanism above
described constructed and combined with the other parts shewn in the accompanying

page_text: Drawing or with other suitably constructed parts, and operating as above set
forth.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Sixth day of September, in the year of our Lord One
thousand eight hundred and seventy-six.
W. KOB. LAKE. (L.S.)