IMPROVED MACHINE FOR SIFTING VARIOUS MATERIALS
Year: 1882

page_text: LETTERS PATENT to Maurice Shearer senior and Maurice Shearer junior both
of Old Kent Road in the County of Surrey for an invention of "IMPROVED
MACHINE FOR SIFTING VARIOUS MATERIALS
PROVISIONAL SPECIFICATION left by the said Maurice Shearer st &
Maurice Shearer jr. at the Office of the Commissioners of Patents on the
30th May 1882.
MAURICE SHEARER Senior and MAURICE SHEARER Junior both of Old Kent
Road in the County of Surrey "IMPROVED MACHINE FOR SIFTING VARIOUS
MATERIALS"
This invention relates to a Machine for sifting various materials and it is
constructed so that the cylinder in which the material is placed for sifting shall
when rotated have a compound oscillating and eccentric action.
In order to affect the above I fix a shaft diagonally through the sifting cylinder
so that the said shaft may be eccentric to the said cylinder at each end, such
eccentrics being opposed to each other on account of the diagonal position of the
shaft as aforesaid. The said shaft is made to revolve in suitable bearings at a
suitable angle so that when the material to be sifted is fed into the upper end of
said cylinder and this latter is rotated the finer portion of such material will pass
through the perforations or meshes in the said cylinder and the coarser portion or
portions will be carried to the other end and pass out separately This Machine
may be worked by hand or other power.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Maurice Shearer sr. & Maurice Shearer jr. in the Great Seal Patent
Office on the 30th November 1882
86
MAURICE SHEARER Senior and MAURICE SHEARER Junior both of Old Kent
Road in the County of Surrey IMPROVED MACHINE FOR SIFTING VARIOUS
MATERIALS
"
This invention relates to a Machine for sifting various materials and it is
constructed so that the cylinder in which the material is placed for sifting shall
when rotated have a compound oscillating and eccentric action.

page_text: In order to effect the above I fix a shaft diagonally through the sifting cylinder
so that the said shaft may be eccentric to the said cylinder at each end such
eccentrics being opposed to each other on account of the diagonel position of the
shaft as aforesaid the said shaft is made to revolve in suitable bearings at a
suitable angle so that when the material to be sifted is fed into the upper end of
said cylinder and this latter is rotated the finer portion of such material will pass
through the perforations or meshes in the said cylinder and the coarser portion or
portions will be carried to the other end and pass out separately.
may be worked by hand or other power
This machine
And in order to explain our said Invention more fully we will now proceed
to describe the same with reference to the accompanying sheet of drawing in
which the same letters denote the same parts
may be worked by hand or other power
And in order to explain our said Invention more fully we will now proceed
to describe the same with reference to the accompanying sheet of drawing in
which the same letters denote the same parts
DESCRIPTION OF DRAWING
Fig 1 shows side elevation of a machine constructed according to our said
invention.
Fig 2 plan of same.
Figs 3 and 4 end views.
A shews a sifting cylinder (composed of metal or other suitable material) fitted
to shaft B which latter revolves in bearings e cone of these bearings being fitted
at a greater height than the opposite one as shewn in fig 1. The cylinder A is
fixed eccentrically on the shaft B at each end of cylinder the said eccentrics being
opposed to each other as shown at figs 1, 3 and 4 so that the shaft is diagonel to
the cylinder A, D is a hopper into which the material to be sifted is fed
When the cylinder A is rotated the finer portions of the material fed into the
hopper to be sifted will pass through the meshes or perforations in same such
cylinder receiving a compound oscillating and rotatory action and the coarser
portions will pass out at end of cylinder on account of its slanting position. In
the drawing the cylinder is shewn open at both ends but it may of course be closed
at one or both ends if desired to retain the coarser portions in the cylinder.
Having thus described the nature and object of our said invention and the
means whereby the same may be carried into practical effect we would remark in
conclusion that what we claim as our invention and desire to secure by the
hereinbefore in part recited Letters Patent is
A machine for sifting various materials constructed substantially as and for the
purposes set forth.
In Witness whereof We the said Maurice Shearer Senior and Maurice
Shearer Junior have hereunto set our hands and seals this twenty seventh
day of November in the year of our Lord one thousand eight hundred and
eighty two.
MAURICE SHEARER SEN". (L.S.)
MAURICE SHEARER JUB. (L.S.)