Improvements in Apparatus for Imparting the. requisite Tension to an Endless Band or Strap Used for Driving the Spindles of Spinning and other Machinery.
Year: 1884

page_text: Improvements in Apparatus for Imparting the. requisite Tension
to an Endless Band or Strap Used for Driving the Spindles of
Spinning and other Machinery.
COMPLETE SPECIFICATION.
£30
I HENRY BERNOULLI BARLOW, of 17 St Ann's Square, Manchester, in the
County of Lancaster, Consulting Engineer and Patent Agent, do hereby declare
the nature of said Invention for IMPROVEMENTS IN APPARATUS FOR IMPARTING
THE REQUISITE TENSION TO AN ENDLESS BAND OR STRAP USED FOR DRIVING
THE SPINDLES OF SPINNING AND OTHER MACHINERY, 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 the improvements that my foreign correspondent has
made in those spinning frames in which the spindles are driven by an endless band
or strap and for which Letters Patent were granted to me on the Third day of
November 1882 N° 5245, and consists in the construction and arrangement of the
tension apparatus which gives the necessary tension to the endless band or strap
whereby the said tension may be regulated separately for each pair of spindles
without stopping or interfering with the working of the machine.
The adjustable tension apparatus is of simple construction and most efficient, it
may be readily and cheaply applied without adding greatly to the weight of the
carriage and by its use the spindles may be driven at a uniform rate of speed..
And in order that this Invention may be fully understood and readily carried
into effect I will proceed to describe the accompanying Sheet of Drawings, reference
being had to the Figures and letters marked thereon.
Fig. 1 is a side view, partly in section and Fig. 2 a plan of the adjustable tension
apparatus fitted on a mule carriage.
The spindles to be driven are supported in the usual manner in bearings a and b
secured respectively to the two rails B and B¹. Behind the spindles are placed a
row of adjustable tension pulleys (one to each pair of spindles) which give the .
necessary tension to the endless strap (or band) C which is thus caused to impart a
constant and uniform motion to the spindles.

page_text: Each tension pulley is formed of a convex cylinder D when a strap is employed
for driving, and the axis (parallel to that of the spindles) is supported below in a
footstep a' in the sliding plate E and above in an open bearing b¹ secured to the
standard F. The convex pulleys are replaced by grooved pulleys when the driving
is effected by a band or cord.
The sliding plate E and the standard F are fastened together or made in one
piece and are free to slide on the adjustable bedplate e fixed on the frame G by a
screw and the adjustable bracket f secured to the rail B¹ by screws v¹ (see Figs. 1°
and 1b). A metal spring his fitted between the upright e¹ on the bedplate e and
the standard F: the pressure exerted by this spring being regulated by a nut g the
.boss of which bears against the spring and which may be moved from or toward
the upright e¹ on a screw fixed to the latter.
By these means each pulley D may be adjusted and the tension of the strap or
band on the two adjoining spindles regulated.
Having now particularly described and ascertained the nature of this said
Invention and in what manner the same is to be performed I declare that what
I claim is-
The construction and arrangement of parts forming the improved tension
apparatus, substantially as herein shown and described for the purposes specified.
Dated this 26th day of July 1884.