Improvements in Purifiers for Middlings and the like.
Year: 1892

page_text: Date of Application, 26th Feb., 1892
Complete Specification Left, 24th Nov., 1892-Accepted. 25th Feb. 1893
PROVISIONAL SPECIFICATION.
Improvements in Purifiers for Middlings and the like.
I, PEIRSON TURNER, of 82 Mark Lane, in the City of London, Engineer, do
hereby declare the nature of this invention to be as follows:-
:―
It has before been proposed to make purifiers with troughs over the sieves, such
troughs being fixed a short distance apart so that the current of air passing through
the sieve carries the dust up between the troughs and deposits it in them. A brush
has also been provided to sweep out the troughs.
According to this invention I divide the space above the sieve into a number
(say four) compartments and in place of using a single brush common to all the
troughs I employ a separate brush for each set of troughs in each compartment.
In place also of fixing the troughs to the shaking sieve I fix them to the frame
of the machine so that they are stationary.
I have also found that the usual V shaped troughs tend to disperse the dust and
now make them of a curved shape with one side higher than the other so that the
high side of one trough rises above the low side of the trough next to it.
By this arrangement I am enabled to place the troughs further apart than is
usual say an inch and a half and upwards and this permits the silk to be seen
between them which cannot usually be done and also causes the air to pass much
more evenly through the silk.
Dated this 26th day of February 1892.
CARPMAEL & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Puriflers for Middlings and the like.
I PEIRSON TURNER, of 82 Mark Lane in the City of London, 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:-
It has before been proposed to make purifiers with troughs over the sieves, such
troughs being fixed a short distance apart so that the current of air passing through
the sieve carries the dust up between the troughs and deposits it in them.
A brush has also been provided to sweep out the troughs.
According to this invention I divide the space above the sieve into a number
(say four) of compartments and in place of using a single brush common to all the
troughs, I employ a separate brush for each set of troughs in each compartment.
In place also of fixing the troughs to the shaking sieve I fix them to the frame
of the machine so that they are stationary.
I have also found that the usual V shaped troughs tend to disperse the dust and
I now make them of a curved shape with one side higher than the other so that the
high side of one trough rises above the low side of the trough next to it.
By this arrangement I am enabled to place the troughs further apart than is
usual, say an inch and a half and upwards and this permits the silk to be seen
between them which cannot usually be done, and also causes the air to pass much
nore evenly through the silk.

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 is a transverse section, and Figure 2 a longitudinal section of so much
of a purifier as is required to illustrate my invention.
a are troughs of the form shown in Figure 2, having their ends fixed to
longitudinal bars b, supported by the plates or brackets e fixed to the frame of the
machine. Above these troughs are four brushes d, each in a separate compartment
formed by partitions e, and carried by chains f passing over chain wheels upon the
shafts g g the former being driven by a worm and worm wheel h. jis the sieve
supported on spring standards k, and driven by mechanism of ordinary construction
not shown in the drawings.
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 :-
1. The combination of a sieve, troughs above the sieve and two or more brushes
each in a separate compartment and moving along the troughs substantially as
described.
2. The combination of a sieve stationary troughs above the sieve and a brush or
brushes moving along the troughs, substantially as described.
3. Purifiers substantially as described and shown in the drawings.
Dated this 16th da
if Navamo 1902
PEIRSON TURNER.