Improvements in Distributing, Feeding, and Sorting or Grading Apparatus.
Year: 1897

page_text: Date of Application, 19th July, 1897
Complete Specification Left, 14th Apr., 1898-Accepted, 19th July, 1898
PROVISIONAL SPECIFICATION.
Improvements in Distributing, Feeding, and Sorting or Grading
Apparatus.
I, GEORGE FREDERICK REDFERN, of the Firm of G. F. Redfern & Co., The
General Patent Office, No. 4, South Street, Finsbury, in the County of London,
Patent Agents, do hereby declare the nature of this invention (a com-
munication to me by Jean Goebel, of Darmstadt, in the German Empire, Engineer,)
to be as follows:. _
This invention relates to improvements in distributing feeding and sorting or
grading apparatus.
When it is required to gradually and regularly distribute or feed substances
(such as grain, corn, coal, stones, ores, powdered or ground material, paper articles
and the like) from a receptacle in any apparatus for instance a sieve, crushing
machine cleaning machine or the like, through an outlet of suitable width the
known shaking arrangements are not satisfactory, because the said arrangements
besides making 'considerable noise feed the material irregularly and are liable to
become choked up.
;
Now it is the object of this invention to obviate these disadvantages and to
this end I employ an arrangement which consists of a receptacle one part of
which, for instance the bottom, is formed of a feed apron which is of suitable
material, is mechanically operated in the direction of the outlet from the receptacle
and feeds the material contained in the receptacle continuously towards the said
outlet and of a drum which rotates against the feed apron and is provided on its
periphery with scrapers which push back any substances projecting above the feed
apron beyond a predetermined distance so that only that material which lies directly
upon the feed apron passes through the outlet. The scrapers which are arranged upon
the periphery of the drum for sweeping off the material are rigidly secured to the said
drum or are at each revolution of the drum, so moved radially by means of cams,
eccentrics, etc., that when opposite the outlet they project beyond the periphery so
as to push or scrape back the material which projects to too great an extent and
when opposite another fixed point they are flush with the periphery of the drum.so.
that anything adhering thereto can be scraped off.
The width of the outlet from the receptacle and the extent to which the scrapers
project beyond the drum at the said outlet, can be adjusted or varied as desired.
The described arrangement is, therefore, suitable for employment in cases where
it is required to sort out, grade or push back all articles or lumps of material beyond
a certain size, that is to say, it can be employed as a sieve, grader or sorting
apparatus. In lieu of the feed apron I may employ chains with strips of metal
forming a feed table or other means for. transporting or the feed apron can be.
formed as a sieve like chain made of a large number of links.

page_text: The invention besides being applicable as a feed device for machines, can be
employed in conjunction with furnaces, steam boilers etc.
Dated this 19th day of July 1897.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.
Improvements in Distributing, Feeding, and Sorting or Grading
Apparatus.
I, GEORGE FREDERICK REDFERN, of the Firm of G. F. Redfern & Co., The
General Patent Office, No. 4, South Street, Finsbury, in the County of London,
Patent Agents, do hereby declare the nature of this invention (a com-
munication to me by Jean Goebel, of Darmstadt, in the German Empire, Engineer,)
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 improvements in distributing feeding and sorting or
grading apparatus.
When it is required to gradually and regularly distribute or feed substances
(such as grain, corn, coal, stones, ores, powdered or ground material pieces of paste-
board and the like) from a receptacle in any apparatus, for instance a sieve, crush-
ing machine, cleaning machine or the like, through an outlet of suitable width,
the known shaking arrangements are not satisfactory, because the said arrange-
ments, besides making considerable noise, feed the material irregularly and are
liable to become choked up.
Now, it is the object of this invention to obviate these disadvantages and to this
end I employ the arrangement hereinafter described and illustrated in the
accompanying drawing, in which :-
:―
Figure 1 is a longitudinal section of the apparatus; and
Figure 2 is a transverse section thereof.
The apparatus consists of a receptacle a one part of which, as here shewn the
bottom, is formed of a feed apron 6 which is of suitable material, is mechanically
operated in the direction of the arrows and feeds the material contained in the
receptacle a continuously towards the outlet from the receptacle, and of a
drum d which rotates against the feed apron and is provided on its periphery with
scrapers e which push back any substances projecting above the feed apron beyond
a predetermined distance so that only that material which lies directly upon the
feed apron b passes through the outlet. The scrapers e which are arranged upon
the periphery of the drum d for sweeping off the material, are rigidly secured to
the said drum d or (as shewn) they are at each revolution of the drum, so moved
radially by means of cams f (or eccentrics, etc.,) that when opposite the outlet c
they project beyond the periphery so as to push or scrape back the material
which projects to too great an extent and when opposite the fixed scraper 9 they
are flush with the periphery of the drum d so that anything adhering thereto can be
scraped off.
The width of the outlet c from the receptacle and the extent to which the scrapers e
project beyond the drum at the said outlet, can be adjusted or varied as desired.
The described arrangement is; therefore, suitable for employment in cases where
it is required to sort out, grade or push back all articles or lumps of material
beyond a certain size, that is to say, it can be employed as a sieve, grader or sorting
apparatus. In lieu of the feed apron I may employ chains with strips of metal
forming a feed table or other means for transporting or the feed apron can be

page_text: formed as a sieve-like chain made of a large number of links. Or in cases where
the material under treatment exerts too great a pressure upon the apron I
advantageously support the apron by intermediate rollers or I can employ a drum
in lieu of the said apron, the said drum being made to suit the material to be
treated..
The invention besides being applicable as a feed device for machines, can be
employed in conjunction with furnaces, steam boilers etc.
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:-
1. In apparatus for distributing, feeding and sorting or grading having a feed
apron, the employment of a drum arranged above the apron and rotating in a
direction against the direction of movement of the apron, the said drum having
scrapers which pass over the apron at a predetermined distance therefrom, sub-
stantially as and for the purpose hereinbefore described.
2. In apparatus of the kind described in Claim 1 and where a fixed scraper is
employed for cleaning the drum, arranging the scrapers so that they can move
radially in the drum and be withdrawn into the said drum when passing the fixed
scraper, substantially as herein before described.
3. The improved distributing, feeding, and sorting or grading apparatus herein-
before described and illustrated in the accompanying drawing.
1000
FUCCE
Ty
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.