Improvements in Riddles or Sieves.
Year: 1889

page_text: Date of Application, 5th July, 1889
Complete Specification Left, 5th Apr., 1890-Accepted, 2nd Aug., 1890
PROVISIONAL SPECIFICATION.
Improvements in Riddles or Sieves.
I, JAMES MAYS of Rawson Buildings, Dykes Hall Road, Hillsbro, Sheffield in the
County of York, Asphalter, do hereby declare the nature of my said invention for
IMPROVEMENTS IN RIDDLES OR SIEVES to be as follows:-
This Invention relates to an improved Riddle or Sieve for riddling lime, ashes,
coal, ganister and the like, required to be assorted in sizes to suit the different
purposes for which the above materials are applicable. By this riddle the material
has only to be handled once, as it sorts itself into the sizes required, thus saving great
labour and expense.
In the construction of this Invention I form a square or other shaped box without
a bottom, made of wood or other suitable material which is placed in a frame on
which it stands. The said box works on centres for the purpose of giving a rocking
motion.
Placed inside the box are frames having different sized meshes which assort the
material thrown into it, the coarsest being placed at the top and so on in different
sizes to the finest at the bottom. These meshes are placed in different positions to
allow the material to drop from the one on to the other.
Fixed under certain meshes is a piece of zinc or its equivalent for the purpose of
guiding the material through its proper course and giving the desired result.
In feeding the riddle it rocks, and in doing so bumps first at one side and then
at the other, by means of two pieces of wood fastened on to the outside of the box
which catch on the top of the frame. The action of rocking and bumping shakes the
meshes thus causing them to clear themselves.
Or it may be made to rock by the frame being put upon rockers.
GARLICK & MCGOWAN,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Riddles or Sieves.
I, JAMES MAYS of Rawson Buildings Dykes Hall Road Hillsborough Sheffield in
the County of York Asphalter do hereby declare the nature of my said invention
for "IMPROVEMENTS IN RIDDLES OR SIEVES" and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:-
This invention relates to an improved riddle or sieve for riddling lime ashes coal,
coke, ganister or any material that requires to be passed through sieves and consists
of a square or other conveniently shaped box without a bottom made of wood or
other suitable material placed in a frame and working on a centre for the purpose of
obtaining a rocking motion.
Inside the box and at certain distances from each other are placed a number of
riddles or sieves each having different sized meshes the largest mesh being at the
top and the smallest furthest underneath. These riddles or sieves are placed in
different positions and angles as shewn in drawings for the purpose of separating the
material into different sizes, if loose they must rest upon supports secured to the inside
of the box, by these sieves being loose, meshes of various sizes may be employed to
suit the work required; fixed under certain of these riddles or sieves are pieces of
zinc or its equivalent for the purpose of guiding the material through its proper
course.

page_text: The material is thrown in at the top which allows all but the largest to pass
through the under sieves, which falls down the top sieve D onto portion of
sieve M into the course between the front of the apparatus and the wood division N,
and lastly out at H. The medium falls through sieves D. E. and F. having inch
meshes, past the separator G and onto sieves L and M having half inch meshes,
forward through outlet I which outlet is on the same side of the box as outlet H.
This size falls down the same sieve M as the largest, but is divided by the wood
division N as above mentioned.
The smallest size passes naturally from the top through sieves D. E and F,
passes G
onto and through M and L and onto the backs of sieves M and L, the portion from
back P, mostly passing through sieve M, onto the lower part of sieve L, whilst some
may go down with the inch and out at I, The portion falling into back Q. through M.
falls onto the lower sieve L and out at J.
The dust passes through sieves D. E. and F. past G. the seperator, through M.
and L. and out at K. onto the ground.
The drawings illustrate the meshes of sieves as follows. D. E. and F. are inch,
the top portion of M and L are half inch, the bottom portion of L. is quarter inch,
and the bottom portion of M. is three-eighths.
On the outside of the box are fastened pieces of wood which catch against the frame
and act as bumpers for the purpose of shaking the riddles or sieves and so clearing
them. Or the frame may be fitted with rockers to serve the same purpose.
The box being placed on a centre the act of feeding is alone sufficient to cause the
rocking motion required and the bumpers coming in contact with the frame shake the
sieves and cause the desired result.
This invention may also be used as a coke sifter and washer by attaching to
the bottom riddles or sieves L and M (shewn in Figure 4.) other riddles working in a
water tank which the rocking action will move as required.
The following is a description of the invention with reference to the drawings
the same letters of reference applying to the several parts throughout the different
views.
A is the frame, B. the wood bumpers which strike against the frame A for the
purpose of cleaning the riddles or sieves, C is the centre or axle upon which the box
is supported and rocks, D. E and F. are the top riddles, G is the separator on which
the material drops after passing through the sieves above it. H. I. J and K are the
outlets for the various sized refuse, H. being the outlet for the largest size I, the
medium J. the small and K. the dust; L and M are the bottom sieves on which
the material falls after passing the separator, L sloping to the left and M to the right,
the lower part of sieve L is pivoted at O. These riddles have backs under one half
at P. and Q. to guide the material onto its proper sieve the refuse falling off them
through the outlets above mentioned.
By this invention various sized materials may be obtained at the one and the same
time.
The accompanying drawings illustrate my invention.
Fig. 1. is a front view in elevation.
Fig. 2. is a side view in elevation.
Fig. 3. is a side view in section shewing the position of the topmost riddles or
sieves.
Figure 4. is a front view in sectional elevation showing position of the undermost
riddles or sieves.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
Firstly. Improvements in the construction of a riddle or sieve having various sized
meshes through which the material passes working on a centre and being self rocking
and capable of fining several sizes of material at one and the same time and also of
sorting the same as required.

page_text: Secondly. In the construction of a box placed in a frame and containing riddles or
sieves with various sized meshes in certain positions for the purpose of obtaining a
desired result as herein before specified and described and as illustrated by the accom-
panying drawings.
Dated this Third day of Anvil 1800
GARLICK & MCGOWAN,
Agents for the Applicant.