SCREENING CLEANING AND DIVIDING PURPOSES
Year: 1885

page_text: JAMES GREGORY, Portland Works, St. Rumbold St. Lincoln, Lime Screen
Manufacturer and I do hereby declare the nature of my invention for SCREENING
CLEANING AND DIVIDING PURPOSES to be as follows:-
This rotary screen is square barrelled, with slides fixed therein. The slides at
the feed end rise about 6 inches and diminish to the level of exit end of screen.
The rise and fall of slides are regulated according to the various requirements of
screen to suit many classes of materials. Any reasonable number of meshes can be
brought into use and these meshes may be formed of steel, iron, wire, metal,
wood &c and shaped either round, square, triangular, segmental or oval, any
reasonable number of divisions of longitudinal space of screen may be subdivided
and the meshes therein fixed obliquely to guide the materials onward to the exit
end of screen.
JAMES GREGORY Screen Manufacturer Portland Works St. Rumbolds St. Lincoln
I James Gregory do hereby declare the nature of my invention for CLEANING,
SIFTING, SCREENING AND DIVIDING PURPOSES and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement: —
The barrel of the screen is sectionally square, but longitudinally is governed in
length by requirements, this barrel has the principles of a screw applied to it by
rotation, in the following manner :-The wires are fixed on the screw principal to
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the barrel by boring holes into the frame work and fixing the same into those
holes, in any divisional part of barrel, the wires may be fixed vertical and square
meshes formed thereat. This arrangement gives either a slow, or fast movement
of material, see Figs 1 and 2. The carriers are made of wood or iron and fixed
into the screen by slipping them on the axle, see, longitudinal elevation and
Longitudinal Section" Fig 3, 4, 5, 6 and on special drawing of carriers, with
explanatory references thereon The wires are fixed into the framework of barrel
longitudinally oblique, see Figs 7 and 8," so that every revolution of the barrel of
screen causes the material to fall and move towards the end of barrel,-see A. A. A.
The material is put into the hopper, Fig. 9, and as the handle is turned, Fig. 10,
the material falls down and into the bottom of barrel, It will be seen therefore
that the carriers, 3. 4. 5 being obliquely fixed across the barrel catch the material,
and when the barrel is square with its axis, the material is caught on the inclined
plane of carrier, see Fig. 11,-and then falls down, the "Small Screen" or, " Carrier,"
to Fig. 12, this operation is repeated many times, the material is turned over and
over, and by friction and concussion the congealed portions are broken up, and in
the case of some discriptions of material,-The Dirt" or, "The finer portions"-8
the case may be, is separated by friction and concussion and the larger portions
carried on to their appointed destinations, the largest of all leaving the barrel at
Fig. 13. The inverted segmental parts of screws are formed in the inner portions
of framework of barrel see Fig. 14, this arrangement pushes the material forward
four times every revolution of barrel.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1st A screen rotating with square formations as regards the structure of barrel.
2nd The screw principle applied to these square formations.
3rd Divisional parts of barrel, vertical and square meshes may be used.
4th The improved transit of material, and the following operations performed by
the revolutions of barrel of screen namely, sifting, screening, carrying, cleaning
and dividing.
5th The breaking up of the material by friction and concussion, and the increase
of superficial sifting and screening surface.
Dated this 20th day of November 1885