Improvements in Apparatus for Surfacing Leather Covered Rollers employed in Machines for Preparing and Spinning Cotton and similar Fibres.
Year: 1893

page_text: Date of Application, 1st July, 1883
Complete Specification Left, 16th Jan., 1894--Accepted, 17th Feb., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Surfacing Leather Covered Rollers
employed in Machines for Preparing and Spinning Cotton and
similar Fibres.
I, ALFRED SEYMOUR-JONES, of Cambrian Leather Works, Wrexham, in the
County of Denbigh, Leather Manufacturer, do hereby declare the nature of this
invention to be as follows:-
This invention is designed to provide an improved appliance or apparatus for
surfacing or making true the surfaces of leather covered drawing rollers of
machines for preparing and spinning cotton and similar fibres.
It consists essentially of an apparatus constructed with two hollow or internal
conical centering blocks mounted in suitable headstocks by which the roller is held
and rotated one of which is rotated by means of a pulley and strap or gearing and
the other loose to rotate in its socket being held with sufficient force against the
roller end by a spring or weight suitably placed, and a sharp knife edge carried in
a slide and actuated by a screw by which the leather surface of the roller is pared
and a micrometer screw for adjusting or moving the sharp blade all mounted on a
suitable stand or bed.
In carrying out the invention I provide two stands or headstocks of suitable
construction. In each of these I mount a centering device in the form of a hollow
or internal cone.
That in one headstock driven or rotated by a pulley mounted on
its spindle over which a strap or band passes or by spur or bevel gearing and that
in the other free to rotate in its socket or bearing. Between these hollow cones
the roller is placed one end of the roller or its spindle fitting into each. The
hollow cone takes the ends of rollers of different sizes and accurately centres them.
The loose cone has also a longitudinal movement and is pressed tightly against the
roller by means of a spring or weight and the tension or grip on the roller is
sufficient to hold it whilst being rapidly rotated by the other cone.
The socket or bearing of the movable cone is preferably attached to a handle
or lever by which it can be moved to and fro and to this handle a spiral spring or
weight is attached.
A sharp knife edge or blade is fixed in a slide rest capable of being moved to
and fro preferably by a screw with which it can be easily thrown into and out of
gear. The blade is fixed so as to be easily removed to be sharpened and the blade
is adjusted or set by means of a micrometer screw so that the slightest amount can
be removed from the surface. The blade is preferably set on edge so as to present
only a fine point to act upon or cut the leather and preferably on an angle of from
45° to 60°.
Instead of a stationary knife edge a rapidly rotating cutter or grinding disc
may be mounted to act upon the surface of the leather but for soft leathers 1 prefer
the sharp blade as a grinding disc does not leave so smooth a surface as it is apt to
raise a nap upon it.
Dated this 29th day of June 1902.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Surfacing Leather Covered Rollers
employed in Machines for Preparing and Spinning Cotton and
similar Fibres.
I, ALFRED SEYMOUR-JONES, of Cambrian Leather Works, Wrexham, in the
County of Denbigh, Leather Manufacturer, 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 is designed to provide an improved appliance or apparatus for
surfacing or making true the surfaces of leather covered drawing rollers of machines
for preparing and spinning cotton and similar fibres.
It consists essentially of an apparatus constructed with two hollow or internal
conical centering blocks mounted in suitable head stocks by which the roller is
held and rotated one of which is rotated by means of a pulley and strap or gearing
and the other loose to rotate in its socket being held with sufficient force against
the roller end by a spring or weight suitably placed, and a sharp knife edge carried
in a slide and actuated by a screw by which the leather surface of the roller is
pared and a micrometer screw for adjusting or moving the sharp blade all mounted
on a suitable stand or bed.
The invention will be fully described with reference to the accompanying
drawings in which the apparatus is fully illustrated.
Fig. 1. Front elevation.
Fig. 2. Longitudinal section.
Fig. 3. Plan.
Upon a suitable bed A are placed a fixed headstock B and a movable head-
stock C each provided with a centering device or chuck D E in the form of a
hollow or internal cone. The chuck D of the fixed headstock is driven by the
strap pulleys F on the spindle d which carries it or it may be driven by spur
bevel
or other gearing. The chuck or centre E in the movable headstock C is free to
rotate in its socket or bearing in the spindle G being centred at its inner end.
Between the chucks D and E the roller to be trued is placed one end of the
roller or its spindle fitting into each. The hollow cones take the ends of the
rollers of different sizes and accurately centres them sufficient friction being applied
by the chuck D to rotate the roller with it. For hollow rollers the chucks may
be made with external cones to fit into the ends. The loose centre or cone E has
also a longitudinal movement the spindle G which carries it being free to slide
backwards and forwards in the headstock C. It is pressed forwards by the
spring Hor a weight may be substituted therefor. The loose clutch or cone
centre E is thus pressed tightly against the end of the roller and the friction or
pressure on the roller is sufficient to hold it whilst being rapidly rotated by the
other clutch or cone D.
To the spindle G which carries the socket or bearing of the cone centre E is
attached or connected a handle or lever I by which it can be moved to and fro in
the headstock.
On the bed A is a slide rest L capable of being moved to and fro by the
screw M. The screw is geared with the driving spindle of the fast headstock B
by means of helical gearing N and a worm and worm-wheel n and is connected to
the slide rest L by the worm wheel m mounted in bearings thereon.
The slide rest L carries a sharp circular or other knife O which is fixed in a
socket or holder P so as to be easily removed or adjusted. The socket or holder P
for the knife is mounted on an upright stud or pillar R upon which it can be
clamped in any position by a pinching screw p. The height of the socket P in
the stud R is adjusted by a fine or micrometer screw r chased on the stud and a
nut R¹ thereon marked with a fine scale to indicate a very slight movement.

page_text: The top slide of the slide rest L is moved to and fro by a screw the head or
handle of which is also marked with a fine scale to indicate the movement of
the slide in or out. By this arrangement the knife O can be adjusted to true up
the roller by removing the slightest amount from the surface.
The blade is set so as to present only a small surface or a fine point to come in
contact with and cut the leather and preferably at an angle of from 45° to 60°.
The blade may be oblong instead of circular but I at present prefer a circular
blade.
Where the circular blade O is used it is mounted on a spindle with a toothed
wheel at one end which can be caused to gear with a wheel substituted for the
chuck D and a rotary movement may be thereby given to it which will enable it
to be readily ground and sharpened.
Instead of the stationary blade the circular blade may be caused to rotate
rapidly during the cutting or truing operation but I at present prefer it stationary
the circular blade providing a large cutting edge which can be gradually changed
from place to place as one part becomes dull and also a blade which can be quickly
and easily sharpened.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. A machine for surfacing or truing leather covered rollers constructed with
fast and loose headstocks each carrying conical clutches for holding and centering
the rollers, one of which is held against the end of the roller by a spring or
weight, a slide rest moved backwards and forwards by a screw to carry a knife
blade, and a sharp knife blade carried by a socket or holder mounted upon an
upright stud or pillar on the slide and adjusted by means of a fine micrometer
screw substantially as described.
•
2. A machine for surfacing or truing leather covered rollers having the several
parts constructed and arranged in combination substantially as described and
shown.
Dated this 15th day of January 1994.
DaLed Luis
UL
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.