Improved Pressure Regulating Mechanism for the Drawing-off Rollers of Combing Machines.
Year: 1893

page_text: Date of Application, 12th June, 1893
Complete Specification Left, 10th Mar., 1894-Accepted, 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improved Pressure Regulating Mechanism for the Drawing-off
Rollers of Combing Machines.
We, WILLIAM HAGGAS SONS AND COMPANY LIMITED of Oakworth near
Keighley in the County of York, Manufacturers, and ROBERT HEATON of the
same place, Overlooker, do hereby declare the nature of this invention to be as
follows, that is to say :-
It consists of an arrangement and combination of means in connection with the
drawing-off rollers of combing machines whereby the forces which press same into
contact with each other may be easily regulated and adjusted while they (said
compressive forces) are evenly distributed throughout the entire surfaces of the
endless leathers as they pass between these said rollers, with the resultant
advantages well known.
Our said arrangement and combination of means consists of the addition of a
supplementary lever which we couple to a cam-lever that is mounted in bearings
to press centrally against the cross bar extending from contact with the roller
bearings on one end to those on the other end of the said drawing-off rollers,
the coupling of this supplementary lever to the said cam-levers being effected by a
rod upon which is mounted a buffer spring so that the power exercised by the
former lever over the latter lever, is through this rod and spring.
The supplementary lever is mounted in bearings upon the machine's framework
so that it, may extend horizontally to carry an adjustable weight by which the
pressure on the drawing-off rollers is regulated. Suitable attachments being
formed on or carried by said weight whereby its position on said supplementary
lever may be secured.
Dated this 10th day of June 1893.
WM. HAGGAS, SONS & CO., LTD.,
ROBERT HEATON,.
Per Samuel Hey,
COMPLETE SPECIFICATION.
Improved Pressure Regulating Mechanism for the Drawing-off
Rollers of Combing Machines.
We, WILLIAM HAGGAS SONS AND COMPANY LIMITED of Oakworth near
Keighley in the County of York, Manufacturers, and ROBERT HEATON of the
same place, Overlooker, 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, that is to say :—
It consists of an arrangement and combination of means in connection with the
drawing-off rollers of combing machines whereby the forces which press same into
contact with each other may be easily regulated and adjusted while they (said
compressive forces) are evenly distributed throughout the entire surfaces of the
endless leathers as they pass between these said rollers, with the resultant
advantages well known.
In the accompanying sheets of drawings ;-
Fig. 1 is a side elevation of a sufficient portion of a combing machine to
illustrate the application of our invention.
Fig. 2 is a similar view to Fig. 1 but shows a modification hereinbefore
described.

page_text: Fig. 3 is a top view of a portion of a combing machine showing two pairs of
drawing-off rollers with our improved mechanism applied thereto.
Figs. 4 and 5 are drawings in detail herein after referred to.
The drawing-off rollers a and b are mounted in their usual bearings c and d, the
roller a being stationary except its rotary motion, while the roller revolves in
moveable blocks e e so that its position, relatively with the roller a, may vary in
accordance with the quantity of fibre or the thickness of the sliver and the leather f
(which for the sake of clearness is only shown in broken lines), as is well under-
stood; pressure, for forcing the roller against or towards the roller a being
imparted through the blocks e e¹ and the cross-bar g in manner common and
well known.
However, in accordance with our invention the pressure thus imparted to the
bar g is obtained from the weight which is adjustably attached to the lever k
pivotted at m to the bearing n carried by the framework o, this framework o being
that of a well known part of the combing machine.
The lever is coupled to the lever p by means of the rod q and spring said
rod 9 passing loosely through an opening in the end of this lever p so that its
downward force or pull thereon is exercised through the spring r, while an
adjusting nuts mounted upon the screwed end of the rod q is employed for
regulating the resilience of the said spring . This lever P is pivotted at t¹ to the
fixing t carried by the bearings c and d, and is bent at p¹ in order that it may not
interfere with the mounting or any of the movements of the leather f
When the rollers a and b are of small diameter thus requiring them to be placed
closer to the circle, the lever arm p is adjustably secured at p' as shown by
Figs. 4 and 5 so that its position thereon may be altered to meet the altered
position of the rollers a and b.
The arm p of the lever p is arranged to press the adjusting screw v against the
cross-bar g as shown by Fig. 1 although we preferably mount the spring u between
this screw and the bar g as shown by Fig. 2 in which case the moveable nut w is
for adjusting or regulating the spring u.
By the arrangement of levers above described the pressure upon the roller b is
not increased by increase in the thickness of the sliver or fibre passing between it and
the roller a since at all times the pressure of the weight his constant, and as such
pressure is exerted at the central part of the bar g, the roller b does not press one
edge of the leather f more than the other so that instead of one part of said
leathers being more quickly worn out than another, as is the case when the usual
pressure regulating means are employed, all parts of them deteriorate evenly so
that the term of their efficiency is greatly prolonged.
To prevent excessive vibration of the levers p and k which may be caused by
the movements of the roller b, we mount the springs u and r to intercept the joining
of these levers to the bar g so that the resilience of these springs may counteract
said vibratory movements.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is ;-
The combination of weighted lever and adjustable spring-mechanism with the
drawing-off rollers of combing machines the same being formed and arranged
substantially as herein set forth and described.
Dated this 9th day of March 1894.
W. HAGGAS, SONS & CO., LTD.,
ROBERT HEATON,
Per Samuel Hey,
Agent.