Improvements in Tension Devices for Driving Bands of Spinning Machinery.
Year: 1890

page_text: Date of Application, 6th May, 1890-Accepted 7th June, 1890
COMPLETE SPECIFICATION.
Improvements in Tension Devices for Driving Bands of Spinning
Machinery.
A communication from abroad by CHARLES WILLIAM JONES, of Philadelphia, State
of Pennsylvania, United States of America.
I, William PHILLIPS THOMPSON, F.C.S. M.I.M.E. of the Agency for Foreign
Patent Solicitors 6, Lord Street, Liverpool and 6, Bank Street, Manchester, both
in the County of Lancaster and 323 High Holborn in the County of Middlesex,
Civil Engineer, 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 spinning machinery, and consists in a novel device for
taking up the slack and maintaining a uniform tension on the band or bands. Those
bands vary in length according to the hygrometric condition of the atmosphere, and
cause the bobbins to wind unevenly, but this is overcome by the hereindescribed
device, which maintains the required tension on the hand, and causes the spindles to
rotate uniformly, and the yarn to twist evenly.
In the drawings,
Figure 1 is a sectional view of a portion of a spinning machine with the improved
tension device applied thereto;
Figure 2, a sectional view of a slightly different form of device;
Figure 3 a perspective view of the preferred form of tension device;
Figures 4, 5 and 6, detail views hereinafter described.
In the construction shown in Figure 1, the supporting bar A, upon which the
tension pulley b slides, is arranged vertically, while in Figure 2 it is shown as being
in an inclined position. The supporting bar A, shown in Figure 1, is made in the
form of a Y-shaped casting and is provided at the outer ends of its arms A' A' with
wheels a, over which the driving band B passes. C indicates a block which is adapted
to slide upon the upright portion of the bar or standard A, the said block being pro-
vided with a wheel b around which a loop formed in the driving band B passos.
D indicates a spring-drum which is shown in detail in Figure 6, the drum being
secured to the floor at the base of the standard or bracket A. E indicates a cord or
connection secured at one end to the slide block C, and at the opposite end to the
drum D, upon which it is designed to wind.
In the construction shown in Figure 2, the inner ends of the supporting bar A are
supported by an upright F, and the spring drum D, instead of being secured to the
floor as in Figure 1, is secured to the underside of the supporting bar, the cord or
connection E, under such arrangement, passing to an idle pulley c, as shown in
Figures 2 and 3. The wheel or pulley 6, carried by the slide C, will advisably be
made of wood, and will also be provided with a hub or bushing d of vulcanized fibre,
as shown in Figure 4, thereby obviating the necessity of frequent oiling, and lessening
the danger of fire.
The shaft of the drum is provided with a ratchet wheel with which it is adapted to
engage a spring pawl, which latter is designed to hold the shaft against turning after
the required tension has been given to the spring. In machines in which only one
row of spindles is employed, the lower end of the supporting bar will be secured to
the floor, or to a portion of the framework of the machine, and to assist in holding
the bar in its proper position it will be provided with a block G which in turn is
provided with a point or spur e, shown in Figure 3, designed to be driven into
the woodwork-the said block being held in position upon the bar by means of a set
screw f.
The supporting bar, shown in Figure 3, may, if desired, be arranged in an

page_text: upright position, as shown in Figure 5, in which case it will be provided with
two guide wheels at its upper end, and at the lower end with a suitable base
or foot piece.
Having now particularly described and ascertained the nature of tho said inven-
tion and in what manner the same is to be performed, as cominunicated to me by my
foreign correspondent, 1 declaro that what f'claim is :-
1. In combination with a bar, a slide mounted thereon and carrying a tension
pulley to receive the driving band, a spring-drum, and a connection between the
drum and the slide.
2. In combination with the bar and slide and its tension pulley, a spring-drum,
an idle pulley and a connection between the drum and slide passing about the idle
pulley.
3. In a tension device, such as shown, means for 、
the spring, substantially as described.
ing the force or tension of
4. In a tension device, the tension pulley having a hub of vulcanized fibre.
5. In combination with an inclined bar or support, a tension pulley mounted thereon
and adapted to receive the driving band.
6. The construction and arrangement of tension apparatus, substantially as shown
in Figure 1.
7. The construction and arrangement of tension apparatus substantially as shown
in Figure 2.
8. The construction and arrangement of tension apparatus substantially as shown
in Figure 5.
Dated this 5th day of May 1800
WM. P. THOMPSON & Co.,
Agents for the Applicant.