Improvements in the Drawing-off Rollers of Noble's and similar Combing Machines.
Year: 1891

page_text: Date of Application, 27th Aug., 1891
Complete Specification Left, 27th May, 1892-Accepted, 2nd July, 1892
PROVISIONAL SPECIFICATION.
Improvements in the Drawing-off Rollers of Noble's and similar
Combing Machines.
I, THOMAS HENRY SHAW, of the firm of Shaw & Mitton, Harris Street,
Bradford in the County of York, Wool Combers, do hereby declare the nature of
this invention to be as follows:-
This invention relates to improvements in the drawing-off rollers of Noble's and
other similar combing machines, and its object is to facilitate the adjustment of
said rollers as well as cause them to bear with an uniform pressure across the whole
breadth of the endless leathers or aprons passing between them.
The said improvements consist of the arrangements hereinafter described 'by
which means the pressure on both ends of the rollers is adjusted by one screw.
For this purpose I dispense with one of the adjusting screws of said rollers,
preferably the screw fitted in the bottom carrier in which the rollers are mounted
and I provide a loose cross-piece approximately parallel with the rollers and having
its ends fitted in the slots of said carriers and bearing against the bearings of the
adjustable roller. Said cross-piece is provided with a projection at the middle of
the opposite side to the rollers, and a lever hinged or loosely connected to the lower
carrier bears against said projection and its free end extends into the slot of the
upper carrier. The tension spring of the rollers is arranged to bear against the
free end of said lever and said spring is adjusted by the screw of the top carrier.
Or instead of the ordinary spiral spring said cross piece may be made into a
spring. Or a spiral or other spring may be applied opposite said projection.
By this arrangement the pressure on the whole width of the face of the rollers
is uniform and the pressure may be very readily adjusted with far greater accuracy
than heretofore. I find in practice that amongst other advantages the above
improvements greatly reduce the wear and tear on the leathers, as considerably
less pressure is required and the sliver is more evenly and perfectly drawn from
the circles.
Dated this 26th day of August 1891.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in the Drawing-off Rollers of Noble's and similar
Combing Machines.
I, THOMAS HENRY SHAW, of the firm of Shaw & Mitton, Harris Street,
Bradford in the County of York, Wool Combers, 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 drawing-off rollers of Noble's and
other similar combing machines. The pressure between these drawing-off rollers
has hitherto been regulated by two screws constructed to adjust the pressure of two
springs upon the bearings at each end of the movable roller. This arrangement is
exceedingly liable to allow an unequal pressure to be put upon the endless leathers
passing between the rollers (particularly as the rollers proper or parts on which the
feathers are mounted are not midway between the journals of the rollers) thus
interfering with their efficiency as well as exposing such leathers to excessive wear.

page_text: and tear.
Moreover the screw for adjusting the pressure of the spring on the
bottom bearing of the adjustable roller is owing to its position, most inconvenient
to get at.
The said improvements consist of the arrangements hereinafter described by
which means the pressure on both ends of the rollers is adjusted by one screw.
To fully describo my invention reference is made to the accompanying sheet of
drawings forming a part of this Specification in which similar letters of reference
indicate corresponding parts in each of the figures.
Figure 1, represents an elevation of a pair of drawing off rollers fitted with my
improved arrangement for adjusting the pressure between them.
Figure 2, is a side view of the same looking towards the head of the adjusting.
screw and
Figure 3, is a plan view.
Figures 4, and 6, are views of modifications hereinafter referred to.
-
The rollers A, A are'mounted in the top and bottom'carriers B, and B in the
usual manner, and the bottom carrier B is arranged to be connected to the
bracket C adapted to be fixed to the frame of the comb in the ordinary way but
such carrier is without provision for the spring commonly used and simply receives
the lower end of the beam D and the lower end of the lever E. The upper ends
of such beam and lover'pass through the slot a in the top carrier and the end of
the screw F'bears against the top of the lever with a pressure regulated by the
position of the nut upon such screw which confines the spring d against the
cap G of B.
The beam D has a projection e, e at each end fitting against
the bearings i, i of the roller and has a projection at the opposite side opposite ·
the middle of the fluted portion of the rollers.
From the foregoing description 'it will be readily understood that owing to the
position of the projections e, e in relation to the projections situated opposite the
middle of the fluted portion of the rollers the lever E bearing upon will cause an
uniform pressure to be applied between the rollers.
In Figure 4, the spiral spring is dispensed with and the lever E is made into a
spring.
In Figure 6, an arrangement is shown which illustrates 'one of the many ways in
which my invention may be modified.
In this case a bell crank lever Eis employed instead of E. The lever Ehas
its fulcrum on B and one arm bears upon the projection; whilst pressure is applied
to the other arm by the wing nut d' regulating the tension of the spiral springid'
attached to the rigid ármid projecting from B.
A cam or other means may be used for adjusting the pressure of the spring instead
- of the screw F.
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 improved arrangement or method of adjusting the pressure between the
drawing off rollers of Noble's and similar combing machines by means of one screw,'
cam or the like adapted to regulate the pressure of a spring or springs arranged to
bear either directly or indirectly upon the bearings of the adjustablo roller in such
a manner that an approximately uniform pressure is applied to the leathers passing
between the fluted portions of the rollers notwithstanding that the said fluted
portions are not midway between such bearings, substantially as herein shown and
described.
2. The combination with the drawing off rollers of a Noble's or similar: combing.
machine, of a beam extending across the bearings of the adjustable roller, and
means for applying 'pressure to such beam approximately opposite the middle of the
fluted portion of the rollers, substantially as herein shown and described and for..
the purpose specified."

page_text: 3. The improved construction and arrangement of the parts for uniformly
adjusting the pressure between the drawing off rollers, substantially as 'herein
shown and described and illustrated in the accompanying drawings.
Dated this 25th day of May 1892.
DRACUP & NOWELL,
Bradford, Agents.