An Improvement in connection with the Rakes of Sewage Screening and Raking Machines.
Year: 1895

page_text: Date of Application, 17th Aug., 1895
Complete Specification Left, 9th May 1896-Accepted, 13th June, 1336
PROVISIONAL SPECIFICATION.
An Improvement in connection with the Rakes of Sewage Screening
and Raking Machines.
I, ROBERT BIRTWISTLE, trading as S. S. Stott and Co. of Laneside Foundry,
Haslingden, in the County of Lancaster Engineer, do hereby declare the nature of
this invention to be as follows
My invention relates to sewage screening and raking machines in which travelling
rakes are employed to raise and remove the solid matters caught by the screens
and thereby separated from the liquid sewage before it reaches the precipitating
tanks.
At present the prongs of the rakes are liable to become clogged and choked with
the filth and impurities which adhere to them, and the object of my invention is to
obviate and overcome this defect.
I accomplish this object by the arrangement use and application of a brush, comb
or other suitable stripping appliance, which is placed in any convenient position so
as to act on the prongs of the rakes and so strip and clean them.
The brush, comb or other stripping appliance may either be stationary or movable,
and if movable may either receive a rotating or reciprocating movement by any
suitable meaus either by hand or power.
Dated this 16th day of August 1895
H. B. BARLOW & GILLETT,
Agents for Applicaut.
COMPLETE SPECIFICATION.
An Improvement in connection with the Rakes of Sewage Screening
and Raking Machines.
I, ROBERT BIRTWISTLE, trading as S. S. Stott and Co. of Laneside Foundry,
Haslingden, in the County of Lancaster Engineer, 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:-
My invention relates to sewage screening and raking machines in which travelling
rakes are employed to raise and remove the solid matters caught by the screens
and thereby separated from the liquid sewage before it reaches the precipitating
tanks.
At present the prongs of the rakes are liable to become clogged and choked with
the filth and impurities which adhere to them, and the object of my invention is to
obviate and overcome this defect.
I accomplish this object by the arrangement use and application of a brush,
comb or other suitable stripping appliance, which is placed in any convenient
position so as to act on the prongs of the rakes and so strip and clean them.
The brush, comb, or other stripping appliance may either be stationary or movable,
and if movable may either receive a rotating or reciprocating movement by any
suitable means either by hand or power.

page_text: In the accompanying two sheets of drawings I show two examples of travelling
rakes with stripping appliances to illustrate the mode of applying my invention.
Figures 1 and 2 are front and side elevations respectively of a travelling rake
fitted with a revolving brush and Figures 3 and 4 similar views of a travelling rake
fitted with a revolving comb.
In Figures 1 and 2, the screening and raking machine is constructed and
arranged in the well known manner and is driven from the shaft a which is
actuated either by the handle or by power, as for instance by a chain applied
to the sprocket wheel c fixed on the shaft a. The chains d which carry the
travelling rakes e pass over and round the three pairs of sprocket wheels ƒ, ƒ¹, ƒ³,
in the usual way.
According to my invention I mount a brushi g in bearings on the frame hand
drive this brush in any convenient manner as for instance by means of a chain i and
chain wheel from a chain wheel k fixed on the shaft a. The filth stripped from
the prongs of the rake e by the rotation of the brush g falls on to the inclined
table m which may be cased in if desired.
In Figs. 3 and 4 the only difference is that a revolving comb n is substituted
for the brush g. The teeth of the comb n pass between and strip the prongs of
the rake e.
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 :-
The combination with the travelling rake of a sewage screening and raking
machine, of a brush or comb or other suitable stripping appliance substantially as
herein set forth.
Dated this 8th day of Ma- 1806
H. B. BARLOW & GILLETT,
17 St. Ann's Square, Manchester, Agents for Applicant.