Improved Means for Regulating the Tension of Driving-bands.
Year: 1891

page_text: Date of Application, 14th Sept., 1891
Complete Specification Left, 13th Nov., 1891-Accepted, 19th Dec., 1891
PROVISIONAI. SPECIFICATION.
Improved Means for Regulating the Tension of Driving-bands.
I, WILLIAM DRYLAND, of 18 Avenue de l'Opera, Paris, in the Republic of
France, Gentleman, do hereby declare the nature of this invention to be as
follows:-
My invention is designed to provide in a more simple, economical and efficient
manner than heretofore, for maintaining constant the tension of the spindle-driving
bands of spinning, doubling or twisting machinery, so that a regular or unvarying
rotary motion will be communicated to the said spindles, and a uniform twist
consequently imparted to the fibrous material.
For this purpose I combine, with the spindles and with the cylinder or drum
from which the same are driven by an endless band or cord, a grooved pulley
which is fitted to rotate upon a pin or stud formed on or fixed in a pivoted arm
or lever.
any
Around this pulley is passed a loop or bight of the said driving band or cord.
The said arm or lever is pivoted upon a bracket designed to be secured to any
convenient part of the spinning, doubling or twisting machine; this bracket is
preferably slotted so that it can be adjusted to and secured in desired
position. The said bracket is, moreover, provided with suitable stops for limiting
the movement of the said pivoted arm or lever carrying the pulley; and this
pivoted arm or lever is provided with a spring whereby it will be turned about
its pivot in one direction, or permitted to turn in the reverse direction, to com-
pensate for the expansion and contraction of the driving band or cord and prevent
variation of the tension of such band or cord thereby.
I find it advantageous to employ a coiled spring which surrounds the pivot-pin
of the said arm or lever and one end of which is secured to the said pivot-pin, .
the other end extending outward therefrom and engaging with the said arm or
lever.
I can manufacture the improved device above described, very cheaply, as the arm
or lever for carrying the pulley can be made in one casting, and the slotted bracket
with the stops and the pivot-pin in another casting.
Dated this 14th day of September 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Means for Regulating the Tension of Driving-bands.
I, WILLIAM DRYLAND, of 18 Avenue de l'Opera, Paris, France 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 :-
The object of my invention is to provide in a more simple, cheap and efficient
manner than heretofore, for maintaining a constant and regular tension upon the
spindle-driving bands of spinning, twisting and doubling machines, so that a
regular or unvarying rotary motion will be communicated to the spindles and a
uniform twist will thus be imparted to the fibrous material.
For this purpose, I provide a device consisting of an arm or lever pivoted upon
a pin or stud and carrying a grooved wheel or pulley around which is passed a

page_text: Third. The combination, substantially as above specified, of the spindles of a
spinning, twisting or doubling machine, the driving cylinder or drum, the driving-
band, and the automatic tension-regulators for the said band, arranged one at each
end of the series or group of spindles and constructed substantially as described.
Dated the 18th day of November 1891.
WILLIAM DRYLAND.
D. Young & Co.,
11 & 12, Southampton Buildings, London, W.C., Agents for the Applicant.