Improvements in Maohinery for Spinning, and Twisting Fibrous.
Year: 1894

page_text: Date of Application! 3rd Oct., 1894
Complete Specification Left, 3rd Aug., 1895-Accepted, 28th Sept.,
-1895
1
PROVISIONAL SPECIFICATION.
Improvements in Maohinery for Spinning, and Twisting Fibrous
.:Material.
י
We, JOHN DAWSON and ROBERT SOUTHWORTH DAWSON, both of Bower
Green Shed, Leeds Road, Bradford, in the County of York, Spinners, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in that type of spinning and twisting
5 machinery in which tension rollers are employed to regulate the tension of the
bands or tapes driving the tubes or spindles, particularly applicable to machinery
in which one driving band is employed to drive one spindle on each side of the
'machine.
i
These rollers are usually mounted in bearings formed in swing or pendent
Obrackets, and the object of the invention is to provide improved means for
lubricating the bearings of the rollers, and avoid the necessity of threading the
driving tapes or bands through the said brackets thus leaving the tape free to
be passed on or off the roller without removing the latter from its bearings.
For lubricating the bearings we cast or form a cup or recess close to each
5 bearing adapted to receive and retain a supply of tallow or other lubricant.
A duct is provided to connect the bottom of each lubricating cup or recessiwith
the bearing it is intended to lubricate.
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To avoid the necessity of threading the tape through the bracket, we place the
brackets somewhat higher and nearer the centre of the machine and we make the
bracket shorter below the roller and more or less on one side and employ a roller
of sufficiently small diameter to allow the driving band to pass underneath. The
bracket is made open at the top and is supported by one side only but the other
side is preferably continued above the periphery of the roller to forin a guard
to support the tape in case it slips off the roller.
'
_ Improvements in Machinery for; Spinning and Twisting Fibrous.
Material.
We, JOHN DAWSON and ROBERT SOUTHWORTH DAWSON, both of Bower
Green Shed, Leeds Road, Bradford, in the County of York, Spinners, do hereby
declare the nature of this invention aud 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 that typo of spinning, and twisting
machinery in which tension rollers are temployed to regulate the tension of the
bands oritapes driving the tubes or spindles, particularly applicable to machinery
in which one driving band is employed to drive ones spindle on each side of the
machine

page_text: 1
Reference is to be had to the accompanying sheets 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 a cross, section of such parts of a spinning machine as are
necessary to illustrate the application of our improvements. The lifter plates are
represented at their lowest points.
Figure 2, represents a sectional plan view of the same on the broken line y, z
Figure 1.
Figure 3, represents a sectional view on the line a, b Figure 1.
Figures 4, 5 and 6 respectively represent a plan, an end view and a side view of
the form of "bracket
we employ for supporting the tension roller.
Figures 7 and 8 are similar views to Figures 1 and 2 illustrating the application
of our improvements to "ring" spinning, the "brackets" for supporting the tension
rollers are omitted!
!
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The spindles A and A2, the tubes B and B the wharles C and C³, the lifter
plates Daud D, and the cylinder E are of the usual type.
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The tension rollers, Fare preferably, made smaller., in diameter than usual to
allow the driving tape N running, on the cylinder to pass below and they are
mounted in bearings G, G cast in au improved tension bracket H. The brackets. H
are made as short as possible below the roller F and they are each provided with
atwo tallow cups J which supply lubricant to the bearings G,,G by means of the
ducts. The brackets, H are connected by the arm H to the usual pendent
piece L suspended from the rod R and provided with an adjustable tension
weight L. A guard piece. H³ is formed on the side of the bracket opposite the
arm H³ to form a guard on that side to retain the tape N in case it slips off the
wbarle. Instead of, or in addition to, the guard H³ a guard H represented by
the broken lines in Figures 4 and 5 may be, formed on the brackets to project ou
each side of the roller. The top face of the arm H2 bearing against the pendent
piece L is made as usual slightly at an angle to the axis of the, tension roller so, as
to incline, the axis of the.tension roller to that of the cylinder: as shown in
Figure 2.
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The tension bracket is placed substantially vertically over the cylinder E for
the purpose of bringing the tape Nin contact with said cylinder, almost the whole
distance round the cylinder, and the inclination of the axis, of the tension roller, to
that of the cylinder as shown in Figure 2, and also the inclination of the bracket
and roller as shown in Figure 3 enables the tape to be drawn aside as it leaves the
cylinder clear of the tape passing on to the cylinder as shown in Figures 2 and 3.
The arrows indicate the direction in which the tape runs. In Figures 2 and 3 the
tapes passing, directly across the machine from one wharle to the other are shown
below the tensión bracket and are free to pass up between them as the wharles are
raised by the lifter plate.
This position of the tension roller, besides enabling the tape to have an increased
bearing on the cylinder, enables it with comparatively slight pressure upon the tape
to keep the latter at its requisite tension. And the form and position of the
bracket also allows the tape to be readily placed on or taken off the tension roller
without the necessity of removing the latter from its bearings.
In ring spinning machinery the spindles are usually driven by bands instead of
tapes and the wharles are generally a little larger in diameter also as the spindles
are placed nearer together we find it more convenient to pass the band n ruuning
from the driving cylinder E to the tension pulley F up between the band as it runs
from C to C and the band as it runs from C to E, as shown in Figures 7 and 8
consequently the tension pulley is inclined in the opposite direction to the axis of
the cylinder E to that required for cap spinning. As there is not so muchispace
above the cylinder E in ring. spinning and twisting machinery we make the brackets
and pendent pieces considerably shorter when applying them. to ring frames and
the part His proferably raised up to the position shown by the broken lines h
..

page_text: Figures 4 and 5 to still further reduce the length, but it is more difficult to cast in.
this position.
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 improved tension bracket for spinning and twisting machinery, sub-
stantially as herein shown and described.
2. In that class of spinning and twisting machinery in which each driving band
or tape is employed to drive one wharle on each side of the machine, mounting
the tension rollers vertically above the driving cylinder in such a position that.
the bands or tapes as they run from the wharle to the cylinder pass substantially
vertically underneath the rollers, as herein shown and described.
Dated this lot do of Anova 1805
DRACUP & NOWELL,
Bradford, Patent Agents.