Improvements in Apparatus for Bolting and Sifting Flour and other Materials.
Year: 1889

page_text: Date of Application, 20th May, 1889
Complete Specification Left, 20th Feb., 1890-Accepted, 12th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Bolting and Sifting Flour and other
Materials.
I JOHN MURRAY CASE of 1112 Long Street Columbus Ohio in the United States
of America Manufacturer do hereby declare the nature of this invention to be as
follows:
The object of my invention is to construct an apparatus or reel for bolting and
sifting all classes of material but more especially intended for the bolting of wheaten
flour which apparatus or reel shall have a very large capacity and a gentle action on
the material operated upon and also be simple in construction and durable and not
expensive.
According to my invention I provide a series of elevating pockets or buckets
arranged upon suitable supports connected with the bolt shaft. I prefer to do this as
follows:-I first construct a spider or support for the buckets. This spider I place one at
each end of the reel shaft and such number between as shall give suitable support to the
buckets I then construct the buckets preferably of two pieces of wood arranged at or
about a right angle with each other. Upon these buckets I arrange a series of blocks or
supports which are fastened to the buckets in such a manner as to form a support for
hoops or rings. I place the buckets on the supporting spiders to which I bolt them.
The rings are preferably made of metal covered with some kind of cloth or felt leaving
a space between the bucket and the ring of about from one to two inches corresponding
with the size of the reel. Round this ring I stretch the bolting cloth.
The material may be fed to the reel in the usual manner and as the reel revolves a
portion of the material upon the elevating side is caught by the buckets and carried
over and delivered upon the opposite side of the reel where by gravitation it falls
faster than the downward movement of the reel cloth and therefore produces a sliding
action upon the cloth on the opposite side from that at which it was elevated. By
this operation the reel is caused to bolt on both sides of the machine whereby the
capacity is greatly increased. The material on the elevating side constantly slides
back in a thin sheet whereby there is no great pressure on the cloth and consequently
a better class of bolt is produced and there is much less wear on the silk or other
material used for making the separations than with ordinary machines.
Upon the downward side the material is delivered in what may be called a thin spray
and gently slides down the descending side of the bolting cloth in such a manner as
to produce no pressure upon the cloth consequently there is a gentle bolting action on
all parts whereby the most perfect separation is made with but a minimum of wear
and tear upon the bolting cloth.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Bolting and Sifting Flour and other
Materials.
I JOHN MURRAY CASE of 1112 Long Street Columbus Ohio in the United States
of America Manufacturer do hereby declare the nature of this 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 my Invention is to construct an apparatus or reel for bolting and
sifting all classes of material but more especially intended for the bolting of wheaten

page_text: flour which apparatus or reel shall have a very large capacity and a gentle action o
the material operated upon and also be simple in construction durable and no
expensive.
"
:
I will describe my Invention with reference to the accompanying drawing
Figure 1'of which is a transverse section and Figure 2 a longitudinal section of a
bolting apparatus constructed according to my Invention.
According to my Invention I provide a series of elevating pockets or buckets A.
carried upon supports B fast on the bolt shaft A which is mounted in bearings Con
the frame of the apparatus. Any desired number of supports B may be provided
according to the length of the reel or size of the machine.
The buckets A may be made of metal or other suitable material but I preferably
construct each bucket of two pieces of wood ab arranged at or about a right angle
with each other and to the piece 6 of each bucket I fix a series of blocks c to which T
attach rings or hoops d of metal or other suitable material to support the silk, cloth,
gauze or other seiving material forming the periphery of the reel. The buckets A
which may be fixed by screws or otherwise to their supports B are arranged at such a
distance apart as to leave a space U³ of say about 3 inches between each two contiguous
buckets. The blocks c which support the rings or hoops d should project above the
top of the buckets to such a distance as to leave a space of from one to two inches
according to the size of the reel between the top of the buckets and the bolting silk or
the like carried by the rings or hoops d.
The flour or other material to be bolted may be fed into the reel in the usual
manner by the hopper D and the reel may be rotated from any suitable prime mover
by a strap passing round the pulley H on the shaft A. When the apparatus is at
work the buckets A. raise the material at one side of the reel and carry it over and
deliver it at the opposite, or downward side the material in descending by gravity in
a thin stream which gently slides down the descending side of the bolting cloth or
silk, in such a manner as to produce no injurious pressure upon it. As the material (
is being elevated a portion thereof falls from the buckets and slides over the bolting
silk or the like to the bottom of the reel in a thin sheet whereby there is no pressure
on the bolting silk or the like and consequently a better class of bolt is produced
whilst any excess of material in the buckets while being elevated will pass to the
bottom of the reel through the spaces and thus prevent the choking of the passage
or injury to the bolting cloth or silk.
By this arrangement there is a gentle bolting action on all parts of the reel whereby a
a very perfect separation is effected more rapidly and with less wear of the bolting
cloth or silk than is the case with ordinary bolting machines.
The bolted or separated material which passes through the bolting cloth or silk falls &
into a trough e below and may be conducted therefrom by a screw or creeper f' in the
ordinary manner.
'
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 :-
:-
4
1st. The combination and arrangement of parts constituting a machine for bolting
and sifting flour and other materials substantially as hereinbefore described and 4
illustrated by the accompanying drawings.
2nd. In machines for bolting or sifting flour or other materials the combination
with the reel or drum of a series of buckets or lifters with spaces between adjacent
buckets or lifters and with spaces between the buckets or lifters and the bolting silk or C
the like substantially as herein before described and illustrated by, the accompanying 50
drawings.
Dated this 20th do CTL