Year: 1886

page_text: Date of Application, 10th Apr., 1886.
Complete Left, 13th Dec., 1886.
Complete Accepted, 18th Jan., 1887.
We, ISHMAEL BUTLER WARWOOD, of Gillingham, in the County of Kent, Cement
Maker, and JAMES WALLIS, of the same place, Cement Miller, do hereby declare the
nature of our said invention to be as follows:-
The object of our invention is to manufacture an improved form and arrangement
of apparatus, for sifting cement and other analogous materials.
At or
In carrying out our invention we erect suitable framing to carry the sifters.
near one end of the framing we fit a horizontal crank shaft, such shaft being caused
to rotate by steam or other motive power. A horizontal rod or shaft is fitted longi-
tudinally in the frame, at right angles to the crank shaft, and the crank is connected
therewith by a connecting rod, which imparts to the horizontal rod a reciprocating
motion, longitudinally.
The sifters consist of frames, fitted with any suitable perforated material, or wire
work, and covered over to confine the materials, an opening being made in the cover
for the insertion of the materials to be sifted. These sifters are placed in a slanting
direction so that the materials may be caused to travel downwards. Any number of
these sieves may be mounted in one frame, according to the length of the frame and
the horizontal rod. Each of the sifters is suspended by four rods, chains, links or
ropes, to the upper part of the frame, and is placed, transversely, above the horizontal
rod. Each of the sifters is also connected, transversely, to the horizontal rod by
means of bolts, pins, or otherwise, and any one or more of the sieves may be discon-
nected from the horizontal rod by any ordinary means; such disconnected sieves being
thereby put out of action.
When the crank shaft is caused to rotate, the crank drives the horizontal rod to and
fro' longitudinally. The rod, being connected to the sieves, causes the sieves to
receive a reciprocating motion, at a suitable speed, whereby the materials contained in
the sieves are shaken, and become sifted; the fine materials passing through the
meshes of the sieves, and the coarser portions being retained in the sieves, or allowed
to pass outwards at the ends, or otherwise disposed of.
Buffers are provided to or against which the sifters may strike, without causing
damage or noise; such buffers being made of india-rubber, springs, or other suitable
materials or combination of materials.
ABO DOWNING
GEO. DOWNING,
Agent for Applicants.

page_text: Improvements in Apparatus for Sifting Cement and other
Analogous Materials.
We ISHMAEL BUTLER WARWOOD, of Gillingham, in the County of Kent, Cement.
Maker, and JAMES WALLIS, of the same place, Cement Miller, do hereby declare the
nature of our said invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
The object of our invention is to manufacture an improved form and arrangement
of apparatus, for sifting cement and other analogous materials.
In carrying out our invention we erect suitable framing to carry the sifters. At or
near one end of the framing we fit a horizontal crank shaft, such shaft being caused
to rotate by steam or other motive power. A horizontal rod or shaft is fitted longi-
tudinally in the frame, at right angles to the crank shaft, and the crank is connected
therowith by a connecting rod, which imparts to the horizontal rod, a reciprocating
motion, longitudinally.
The sifters consist of frames, fitted with any suitable perforated material, or wire
work, and covered over to confine the materials, an opening being made in the cover
for the insertion of the materials to be sifted. These sifters are placed in a slanting
direction so that the materials may be caused to travel downwards. Any number of
these sieves may be mounted in one frame, according to the length of the frame, and
that of the horizontal rod. Each of the sifters is suspended by four rods, chains,
links, ropes, wire, india-rubber, or equivalent means to the upper part of the frame,
and is placed, transversely, above the horizontal rod. Each of the sifters is also
connected, transversely, to the horizontal rod by means of bolts, pins, or otherwise,
and any one or more of the sieves may be disconnected from the horizontal rod by
any ordinary means; such disconnected sieves being thereby put out of action.
When the crank shaft is caused to rotate, the crank drives the horizontal rod to and
fro' longitudinally. The rod being connected to the sieves, causes the sieves to receive
a reciprocating motion, at a suitable speed, whereby the materials contained in the
sieves are shaken, and become sifted; the fine materials passing through the meshes of
the sieves, and the coarser portions being retained in the sieves, or allowed to pass
outwards at the ends, or otherwise disposed of.
Buffers are provided to or against which the sifters may strike, without causing
damage or noise, such buffers being made of india rubber, springs, or other suitable
materials or combination of materials.
And in order that our said invention may be more particularly described and
ascertained, reference is hereby made to the accompanying drawings, in which similar
letters of reference indicate corresponding parts.
Fig. 1 is a side elevation of the invention. Fig. 2 is an end view, Fig. 3 a plan
view (partly in section) and Fig. 4 is a longitudinal sectional elevation of the sifter i.
a a is the frame-work. is a horizontal rod for communicating a reciprocating
motion to the sifter. c is a crank fitted to the axle d, which may be driven by any

page_text: suitable motive power, as by a strap from a steam engine. ff are bearings in which
the horizontal rod b works. 9 is a connecting rod, which connects the crank to the
rod b. hh are the bearings for the crank shaft. is the sifter. The lower frame {¹ is
fitted with wire gauze, or equivalent material for sifting, stretched upon the frame, as
shewn. is a curved cover or covers for 'confining the material and preventing its
dissipation. is a spout for receiving the materials to be sifted. I are wires or other
suitable means for suspending the sifter to the frame, as shewn. mm are buffers to
or against which the sifter may strike, as it reciprocates. The motion of the rod 6 may
be communicated to the sifter i by a block n (Fig. 4) or by any other suitable means.
When the crank shaft is. caused to rotate, the rod b receives a reciprocating motion;
the sifter i is thereby caused to oscillate upon the points of suspension furnished by
the rods or wires or other suitable means 11. The sifter with its contents, is thus
shaken; the finer material passing through the meshes of the sieve, and the coarser
particles descending to, and passing out from, the lower end.
The inclination of the sieve may be varied to suit the materials to be sifted, and
any number of sieves may be fitted in one frame side by side by a simple elongation
of the latter.
Two or more cranks, connecting rods, and reciprocating rods may be used, if
preferred; also the connecting rod or rods may be attached directly to the sifters, thus
dispensing with the horizontal reciprocating rod b, and other obvious modifications
may be made in carrying out our invention.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed, we declare that what we claim is :-
1. The manufacture and use of apparatus for sifting cement and other analogous
materials, substantially as herein before described and shewn on the drawings.
2. In apparatus as aforesaid the method of supporting the sifter i by rods or other
suitable means 11, and causing the same to oscillate or vibrate by the rod b, or by
equivalent appliances, substantially as herein before described and shewn on the
drawings.
3. In apparatus as aforesaid the application and use of the curved covers 3 and
spout k, substantially as and for the purposes herein before described and shewn on
the drawings.
4. The general construction, combination, and arrangement of the several and
respective parts, together forming our improvements in apparatus for sifting cement
and other analogous materials, substantially as herein before described and shewn on
the drawings.
GEO. DOWNING,
Agent for Applicants.