Improvements in or relating to Tension-regulating Devices for the Driving-bands of Spindles in Spinning and similar Machines.
Year: 1889

page_text: Date of Application, 30th July, 1889
Complete Specification Left, 20th Nov., 1889-Accepted, 21st Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in or relating to Tension-regulating Devices for the
Driving-bands of Spindles in Spinning and similar Machines.
A communication from abroad by THE RANKEN & MCDONALD SPINNING COMPANY, of,
and having its place of business at, Springfield, County of Hampden, State of
Massachusetts, 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 to be as follows:-
:-
This invention relates to tension regulating devices for the driving bands of spindles
in spinning and similar machines, the object being to provide improved tension
regulating devices to be used for the above named purpose, and the invention consists
in the peculiar construction and arrangement of the said devices, relative to the
spindle driving band for the purpose of maintaining a regular tension thereon, all as
hereinafter fully described.
In the drawing forming part of this specification :
Figure 1 is a plan view of a portion of a spinning machine frame containing the
spindles and driving drum thereof, in which is shown an endless driving band applied
to said drum and spindles, and tension devices arranged to act on said band, embodying
the improvements.
Figure 2 is a perspective view of a portion of the frame of said machine and of
said driving band, and of the said band tension devices.
Figure 3 is a vertical section of a portion of said tension devices, as below
described.
In the drawing, B indicates the portion of the frame of a spinning or twisting
machine in which the driving drum A and the spindles c are supported in operative
positions. The said driving drum is fixed as usual on a supporting shaft d, on one
end of which placed, in a well known manner, a suitable driving pulley. The
spindles c are supported in said frame B in any suitable bolsters or bearings and are
provided with the usual whirrs e on which the driving band, connecting with said
drum, runs.
The driving band 3 is what is known as an endless band, that is to say it is a band
of sufficient length to encircle the drum and all of the spindle whirrs, and the onds
thereof are united in any suitable manner.
To comply with the object of this invention, the said driving band 3 is made long
enough to provide a slack portion which is made to pass from each end spindle of said
machine under that portion of the band which drives the intermediate spindles, as
shown in Figure 1. The object in carrying said slack portion of the band under those
parts thereof which extend between the drum and the spindles is, to provide for a
suitable engagement of the below mentioned tension devices therewith, whereby an
even and regular tension is exerted upon the driving band, and said tension is more
evenly and quickly distributed among the spindles than when the tension pressure is
applied to a short loop of the band leading from the driving drum for obvious reasons,
and the natural elasticity of the band contributes more or less, when said slack portion
thereof extends under the band between the drum and spindles, to an ease of motion
of the tension devices and the durability of the band, and the result thereof is that all
of the spindles with the whirrs of which the said band engages have rotary motions of
a uniform speed, thereby ensuring a uniform degree of twist in the several yarns
which may be operated upon by said spindles.

page_text: The above referred to tension devices to operate upon said driving band for the
purpose aforesaid, are constructed and attached to the frame of the machine as
follows:-
To the lower rail v of the machine, or other convenient place thereon, or in suitable
proximity to the driving band thereof, is fixed a vertical post 4 by its lower end. On
said vertical post 4 is placed a hollow post 5, which is capable of a free reciprocating
rotary movement on the post 4, and to the upper end of said post 5 is rigidly secured
one end of a horizontal arm 6, and to the opposite or free end of said arm is pivoted
a pulley 7 having a groove therein, said pulley being adapted for engagement with
the driving band 3 of the spinning machine in the manner clearly shown in the
drawing. The said hollow post 5 and the said arm 6 are so actuated by a spring as
to cause the said pulley 7 to be swung against the driving band 3 with such force as
to produce in said band a suitable tension, so that its action upon the spindles shall be
that above described, the preferable spring however, in this construction, for swinging
the said arm and pulley as above described, is a coil spring 8 applied to the hollow
post 5, as shown in the drawing, the lower end of said spring having an engage-
ment with a fixed portion of the machine, as the lower rail v, for instance, and having
its upper end suitably extended and engaging with the said arm 6, which carries the
pulley 7 thereon as aforesaid, the action of said spring 8, as will be clearly understood,
being such as to carry the periphery of the pulley 7 with more or less force against
the driving band 3.
In practice, the coiled portion of the spring 8 is made of such internal diameter
that it fits somewhat loosely around the hollow post 5, in order that the tension of
said spring against the arm 6 may be varied by winding the spring around said post
more or less in either direction, thereby varying the tension which is imparted to the
driving band by the pressure of the pulley 7 against it.
The above described band tension devices for use with a single driving band as
described, are of an improved simplified construction, and are adapted to operate
to produce a constant and unvarying tension force upon the driving band of
the spinning machine, whereby the above described result upon the twisted product of
said machine is obtained, and the device is one not likely to become deranged and
inoperative, and hence affords advantages of construction not pertaining to many
of those heretofore devised for maintaining and regulating the tension of spindle
driving bands.
Dated this 20th day of Inly 18000
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Tension-regulating Devices for the
Driving-bands of Spindles in Spinning and similar Machines.
A communication from abroad by THE RANKEN & MCDONALD SPINNING COMPANY, of,
and having its place of business at, Springfield, County of Hampden, State of
Massachusetts, United Sates 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 tension-regulating devices for the driving bands of spindles
in spinning and similar machines, the object being to provide improved tension-
regulating devices to be used for the above named purpose, and the invention consists
in the peculiar construction and arrangement of the said devices, relative to the
spindle driving band for the purpose of maintaining a regular tension thereon, all as
hereinafter fully described, and pointed out in the claim.

page_text: In the drawing accompanying the provisional specification
Figure 1 is a plan view of a portion of a spinning machine frame containing the
spindles and driving drum thereof, in which is shown an endless driving band applied
to said drum and spindles, and tension devices arranged to act on said band, embodying
the improvements.
Figure 2 is a perspective view of a portion of the frame of said machine and of
said driving band and of the said band tension devices.
Figure 3 is a vertical section of a portion of said tension devices, as below
described.
In the drawing B indicates the portion of the frame of a spinning or twisting
machine in which the driving drum A and the spindles c are supported in operative
positions. The said driving drum is fixed as usual on a supporting shaft d, on one
end of which is placed, in a well known manner, a suitable driving pulley. The
spindles c are supported in said frame B in any suitable bolsters or bearings, and are
provided with the usual whirrs e on which the driving band, connecting with said
drum, runs.
The driving band 3 is what is known as an endless band, that is to say, it is a band
of sufficient length to encircle the drum and all of the spindle whirrs, and the ends
thereof are united in any suitable manner.
To comply with the object of this invention, the said driving band 3 is inade long
enough to provide a slack portion which is made to pass from each end spindle of
said machine under that portion of the band which drives the intermediate spindles,
as shown in Figure 1. The object in carrying said slack portion of the band under
those parts thereof which extend between the drum and the spindles is to provide for
a suitable engagement of the below mentioned tension devices therewith, whereby an
even and regular tension is exerted upon the driving band, and said tension is more
evenly and quickly distributed among the spindles than when the tension pressure is
applied to a short loop of the band leading from the driving drum, for obvious reasons,
and the natural elasticity of the band contributes more or less, when said slack
portion thereof extends under the band between the drum and spindles, to an ease of
motion of the tension devices and the durability of the band, and the result thereof
is, that all of the spindles with the whirrs of which the said band engages have rotary
motions of a uniform speed thereby ensuring a uniform degree of twist in the several
yarns which may be operated upon by said spindles.
The above referred to tension devices to operate upon said driving band for the
purpose aforesaid, are constructed and attached to the frame of the machine as
follows:
To the lower rail v of the machine, or other convenient place thereon, or in suitable
proximity to the driving band thereof, is fixed a vertical post 4 by its lower end. On
said vertical post 4 is placed a hollow post 5 which is capable of a free reciprocating
rotary movement on the post 4, and to the upper end of said post 5 is rigidly
secured one end of a horizontal arm 6, and to the opposite or free end of said arm
is pivoted a pulley 7 having a groove therein, said pulley being adapted for engage-
ment with the driving band 3 of the spinning machine, in the manner clearly shown
in the drawing. The said hollow post 5 and the said arm 6 are so actuated by a
spring as to cause the said pulley 7 to be swung against the driving band 3 with such
force as to produce in said band a suitable tension, so that its action upon the spindles
shall be that above described, the preferable spring, however, in this construction,
for swinging the said arm and pulley as above described, is a coil spring 8 applied
to the hollow post 5 as shown in the drawing, the lower end of said spring having
an engagement with a fixed portion of the machine, as the lower rail v for instance,
and having its upper end suitably extended and engaging with the said arm 6 which
carries the pulley 7 thereon as aforesaid, the action of said spring 8, as will be clearly
understood, being such as to carry the periphery of the pulley 7 with more or less
force against the driving band 3.
In practice, the coiled portion of the spring 8 is made of such internal diameter
that it fits somewhat loosely around the hollow post 5, in order that the tension of

page_text: said spring against the arm 6 may be varied by winding the spring around said post
more or less in either direction, thereby varying the tension which is imparted to
the driving band by the pressure of the pulley 7 against it.
The above described band tension devices for use with a single driving band as
described, are of an improved simplified construction, and are adapted to operate to
produce a constant and unvarying tension force upon the driving band of the spinning
machine, whereby the above described result upon the twisted product of said machine
is obtained, and the device is one not likely to become deranged and inoperative,
and hence affords advantages of construction not pertaining to many of those
heretofore devised for maintaining and regulating the tension of spindle driving
bands.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondents, I declare that what I claim is :-
The combination, with the driving drum and the spindles of a spinning and
twisting machine, of an endless driving band engaging with said drum and spindles,
a vertical post supported in bearings in said machine and free to rotate reciprocally
therein, an arm attached to, and extending at right angles from said post, having
a pulley thereon engaging with said band, and a spiral spring surrounding said post
and acting to swing said post and arm and force said pulley against the band,
substantially as set forth.
Dated this 19th day of November 1889.
WM. P. THOMPSON & CO.,
Agents for the Applicant.