Improvements in Revolving Flat Carding Engines.
Year: 1894

page_text: Date of Application, 16th Jan., 1894
Complete Specification Left. 16th Oct., 1894-Accepted, 17th Nov., 1894
:
PROVISIONAL SPECIFICATION.
Improvements in Revolving Flat Carding Engines.
We, BENJAMIN ALFRED DOBSON, Engineer, of Bolton, in the County of
Lancaster, and WILLIAM DOBSON, Engineer of Treverbyn, Newton Abbot, in
the County of Devon, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the grinding of revolving flats of
carding engines and is principally for the purpose of more accurately grinding the
flats from their working surface.
In carrying out our invention we attach to the card bend or framing on each
side of the carding engine, and preferably above the licker-in, a bracket carrying
the two plain or toothed bowls which support the travelling flats. Upon or attached
to the same bracket there is a projection carrying the grinding roller with suitable
setting arrangements. Between the grinding roller and the flat bowls and attached
to the above bracket is placed a prepared faced slide made with two sliding surfaces
upon which the flats travel between the flat bowls. The flats we employ are made
at the ends with two corresponding sliding surfaces to work in conjunction with
the surfaces on the fixed slide.
When travelling on the fixed slide one working surface of the flat is on the
lowest sliding face of the fixed slide whilst the other working surface of the flat
is on the higher sliding face of the fixed slide.
The difference in height between the two sliding surfaces of the flat and the
elevation of one sliding surface above the other on the fixed slide takes out or
neutralizes the bevel or heel of the flat when passing over the grinding roller.
It is obvious that this apparatus may be placed at any other suitable position on
the card and may be so arranged as to enable the flats to be ground from their
working surface by passing them under the grinding roller instead of passing them
over the grinding roller as described.
Dated this 15th day of January 1894.
COMPLETE SPECIFICATION.
Improvements in Revolving Flat Carding Engines.
We, BENJAMIN ALFRED DOBSON, Engineer, of Bolton, in the County of
Lancaster, and WILLIAM DOBSON, Engineer of Treverbyn, Newton Abbot, in
the County of Devon, 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 :-
This invention relates to improvements in the grinding of revolving flats of
carding engines and is principally for the purpose of more accurately grinding the
flats from their working surface.
And in order that our invention may be fully understood and readily carried
into effect we will describe the accompanying sheet of drawings reference being
had to the figures and letters marked thereon.
Figure 1 is a side elevation of part of a revolving flat carding engine fitted
with our improvements.
T
tional alevation of nart of Fiv. 1.

page_text: Fig. 4 is a detail view of part of the grinding roller, supporting slide, and
three flats thereon.
Fig. 5 is a sectional end view of part of Fig. 4.
Figs. 6 and 7 are transverse vertical sections of one of the flats taken respec-
tively on the lines A A and B B, Fig. 5.
Fig. 8 is a plan view, showing part of the card wire as well as the working
and grinding surfaces at one end of a flat and
Fig. 9 is a transverse section on the line C C, Fig. 8.
In carrying out our invention we attach to the card bend or fraining a on each
side of the carding engine, and preferably above the licker-in b, a bracket c
carrying two plain or as shown toothed bowls d which support the travelling
flats e.
Upon or attached to the bracket c is an adjustable piece or bracket f carrying
the grinding roller g which is furnished as usual with suitable setting arrangements.
Between the grinding roller y and the flat bowls d and attached to the bracket c is
a faced slide made with two prepared surfaces h¹ h* upon which the flats e travel
between the bowls d. The flats e we employ are made at the ends with the
following sliding surfaces namely e' ee which support the flat whilst carding the
surfaces being practically one as they are in the same plane; but whilst
grinding the surfaces e¹³ bear on the prepared surfaces h h of the slide,
the flat being recessed at to compensate for the difference in level of the two
surfaces.
When travelling on the fixed slide h one working surface, namely e¹ of the flat e
is on the lowest prepared face, namely of the slide h whilst the other working
surface of the flat is on the higher prepared face of the slide h. The difference
in height between the two sliding surfaces e¹e of the flat, and the elevation of the
prepared surface h³ above the other surface h¹ on the fixed slide h takes out or
neutralizes the bevel or heel of the flat when passing over the grinding roller g
this being permitted by the recessed portion of the Hat.
After grinding the flats leave the fixed slide h and guided by the second bowl d
come on to the flexible bend i or other plain surface upon which they are
supported on their working surfaces e¹ e² and e³ whilst carding and so regain their
bevel or heel.
Whilst being ground the back of each flat e is pressed downward upon the
slide and toward the grinding roller g by means of a slide k and spring k¹.
It is obvious that this apparatus may be. placed at any other suitable position
on the card and may be so arranged as to enable the flats to be ground froin their
working surface by passing them under the grinding roller instead of passing then
over the grinding roller as described.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The combination with a grinding roller and at each side of the carding engine
a fixed slide having two prepared surfaces at different levels, of flats having at
each end corresponding surfaces which during the grinding operation travel on the
fixed slides and so neutralize the bevel or heel of the card wire whilst it is
being ground substantially as herein described with reference to the accompanying
drawings.
2. The general construction arrangement and combination of parts embodying
our improvements substantially as and for the purposes therein described and as
illustrated.
Dated this 15th day of October 1908.
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicants.