provements in Apparatus for Sifting or Separating Cement or other Materials.
Year: 1894

page_text: Date of Application, 27th Dec., 1894
Complete Specification Left, 25th Sept, 1895-Accepted, 26th Oct., 1895
PROVISIONAL SPECIFICATION
Improvements in Apparatus for Sifting or Separating Cement or
other Materials.
We CHARLTS HUBBACK WATSON of The Mount Greenhithe in the County
of Kent Cement Manufacturer WILLIAM BARTHOLOMEW of Cliffe House
Greenhithe aforesaid Foreman of Works and WILLIAM HOLDEN of How wood
Cottage Greenhithe aforesaid Engineer do hereby declare the nature of this
invention to be as follows:-
Om invention has for its object to provide an economical, and efficient, arrange-
ment whereby cement making materials, or other matters, can be expeditiously
sifted, or separated. According to our invention we arrange beneath the discharge
opening, or openings, of a grinding mill, or any number of such mills, or in
proximity to other place, or places, whereat the matters to be sifted, or separated,
are delivered, a sieve, or sieves, to which reciprocating movement is given in such
manner as to cause the fine particles to pass through the sieve, or sieves into a
receptacle beneath, or they may be conveyed away by an Archimedian screw, or
other conveyor, the coarser matter which does not pass through the slove, 01 sievos,
being, by the motion thereof, caused to travel along to the end of the sieve, or
Sieves, to be there delivered for regrinding, or any other desired purpose. A
convenient arrangement according to our invention consists of a sieve supported by
arms, o levers, from suitable supports after the manner in which the two members
of a parallel rule are connected. Thus sieve has a reciprocating movement
imparted to it by means of any suitable motor and connection or gear such as an
eccentric on a driven shaft, the rod of the eccentric being connected to the sieve so
that in reciprocating the sieve will also have a rising and falling motion imparted
to it. The sieve may be provided with a hammer or hammers which will act as
the sieve moves to give a shaking motion to the sieve.
When the apparatus is used to sift the product from a grinding mill o mills the
sieve may be arranged beneath the outlet or outlets therefrom and as the matter is
received therefrom by the sieve the motion given to the sieve causes the finer parts
to pass therethrough to be carried along and delivered by the lower vessel or
trough or screen or conveyor at the end thereof whilst the coarser matter which
does not pass through the sieve moves along the sieve and 14 eventually discharged
at the end thereof and it may be returned to the null or mills for regrinding.
Dated this 27th day of December 1894.
47 Lincoln's fun Fields, London, W C, Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Sifting or Separating Cement or
other Materials.
We, CHARLES HUBBACK WATSON, of The Mount, Greenhithe, in the County
of Kent, Cement Manufacturer, WILLIAM BARTHOLOMEW, of Cliffe House,
Greenhithe, Foi eman of Works, and WILLIAM HOLDEN, of Howwood Cottage,
PRI

page_text: Greenhithe, Engincer, do heroby declare the naturo of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
iu and by the following statement.—
Our invention has for its object to provide an economical and efficient arrange-
ment whereby cement making materials, or other matters, can be expeditiously
sifted, or separated. According to our invention we ariange beneath the discharge
opening, or openings, of a grinding mill, or any number of such mills, or in
proximity to other place, or places, whereat the matters to be sifted, or separated,
are delivered, a sieve, or sieves, to which reciprocating movement is given in such
manner as to cause the finer particles to pass through the stove, or sieves, into a
receptacle beneath, or they may be conveyed away by an Archimedian screw, oi
other conveyor, the coarser matter which does not pass through the sieve or sieves
being by the motion thereof caused to travel along to the end of the sieve, or steves,
to be there delivered for regrinding or any other desired purpose. A convenient
arrangement according to our invention consists of a sieve supported by arms, or
levers, from suitable supports after the manner in which the two members of a
parallel ruler are connected This sieve has a reciprocating movement imparted to
t by means of any suitable motor and connection or gear such as an eccentric ou
a driven shaft, the iod of the eccentile being connected to the sieve so that in
reciprocating the sieve will also have a rising and falling motion imparted to it.
The sieve may be provided with a haminer or hammers which will act as the sieve
moves to give a shaking motion to the sieve.
When the apparatus is used to sift the product from a grinding mill or mills the
sieve may be arranged beneath the outlet or outlets therefrom and as the matter is
received therefrom by the sieve the motion given to the steve causes the finer parts
to pass therethrough to be cared along and delivered by the lower vessel or
trough or screen or conveyor at the end thereof whilst the coarser matter which
does not pass through the sieve moves along the steve and is eventually discharged
at the end thereof and it may be returned to the mill or mills for re-grinding
On the accompanying drawings is shewn a sifung on separating apparatus
constructed according to our above described invention. Fig. 1 shews a side
elevation Fig. 2 a cross section, Fig. 3 a cross section of a modified arrangement,
and Figs 4 and 5 shew enlarged details of the hammer or tapper device.
A is a sieve, which is suspended by aims or links B from the framing C, and
one end of which is connected by a rod D to an excentric E on a shaft driven by
any convenient motive power.
By this means a very rapid to and fro motion is imparted to the sieve, while at
the same time, owing to the slightly angular position which is given to the arms or
links B as shewn at Fig. 1, the sieve 18 made to rise slightly during its for ward
motion and to fall during its backward motion, whereby the material, which is fed
on to the sieve at L is made to travel slowly forward while at the same time it is
subject to n screening action, the fine material which falls through the sieve being
caught in the receptacle below, whence it is conveyed away by a worm G, while
the conise material 13 dist harged from the sievo at II The arms or links B may
either be of rigid material, as at Fig. 2, or they may be of elastic material, such
as caoutchouc bands, as at Fig. 3, which arrangement is employed by preference,
these bands being secured to sturup shaped bars I extending across the eieve.
For facilitating the sifting action, the sieve is subjected to blows from hammers
or tappers J, which consist of loose pendent bars pivotted at their upper ends to
the framing C and bang with then lower euds in loop-shaped brackets K of greater
width than the bars and fixed to the sides of the sieve as shewn at Figs. 4 and 5,
so that as the sieve moves rapidly to and fro, the lower ends of the bars J strike
alternately against the opposite sides of the loops and thus impart a vibratory
motion to the steve. The sieve 18 provided at L with a table of conise wire
network to receive the material supplied from a shoot.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim 18:
1. Apparatus for sifting or separating cement and other materials consisting of
a horizontal sieve suspended from a support by arms, levers or equivalent appliances
to which sieve a rapid to and fro motion is imparted by means of an excentric or
other mechanical device, while at the same time the sieve is subjected to the
vibratory action of hammers or tappers the suspension devices of the sieve being
so arranged as to give the same a slight upward and downward motion as it moves
to and fro substantially as described.
•
2. The construction of apparatus for sifting cement and other materials,
combined and operating substantially as herein described with reference to the
drawings.
Doch 1.
1005
ABEL & IMRAY,
Agents for the Applicants.