Improvements in and relating to Tension Regulating Mechanism for Machines used in Winding Thread, Yarn, and the like.
Year: 1897

page_text: Date of Application, 29th May, 1897-Accepted, 11th Dec., 1897
66
Improvements in and relating to Tension Regulating Mechanism
for Machines used in Winding Thread, Yarn, and the like.
I, BRYCE MUIR KNOX, of the firm of W. & J. Knox, Linen thread manufacturers,
Kilbirnie, Ayrshire, do hereby declare the nature of my Invention, and in what
manner the same is to be performed to be particularly described in and by the
following statement, that
to say :-
This Invention has reference to improvements in and relating to tension
regulating mechanism for machines used in winding thread, yarn, and the like.
And in order that my said Invention and the manner of carrying same into
practice may be properly understood I have hereunto appended a sheet of explanatory
Drawings in which figure 1 is an end elevation, figure 2 a plan view and figure 3 a
front elevation illustrating my improved arrangement of mechanism for automatically
regulating the tension on the thread, while figure 4 is a detached sectional view.
Referring to these Drawings:
:-
The tension on the thread is regulated by automatically moving the longitudinal
tension rods so that the outer rod shall pass through a semicircle or segment of
a circle from the time the winding of the pirn is started until fully wound, and the
thread in passing round these rods to the plate k¹ carrying the tension pins k has its
tension automatically regulated.
ι
The inner longitudinal rod is free to move in bearings in end brackets, and has
connected to it by cross bars the outer longitudinal parallel rod l. As shown in
figures 1 to 3 a worm wheel m is mounted by a boss loose on the inner longitudinal
rod and a hand lever m² is secured by its boss on this rod 1 adjacent to the wheel m.
The outer longitudinal rod passes through an eye m³ on this hand lever m² so that
when the latter is moved round the rod oscillates round with it. A series of
holes m¹ are formed round the flat surface of the worm wheel m and a portable
pin m' is passed through an eye hole in the hand lever m² and through one of the
holes m in worm wheel, so that the hand lever m² shall move with the wheel m
through a semicircle or segment of a circle at each action of winding a pirn, the hand
lever m² being freed and the pin m* shifted back again after the operation has been
completed.
By this means as the rod moves slowly round from the lower to the upper position
the tension on the thread becomes automatically decreased in being wound on the
cop, the speed of winding the thread becoming increased by the increased thickness
of thread on cop. The course of the thread is indicated by the line T.
The worm wheel m is slowly actuated by a screw worin n formned on a spindle n'
carried in bearings in a bracket n² projecting from machine frame.
A ratchet wheel n³ is fitted on the worin spindle n' and receives its motion from a
pawl o. This pawl o is mounted on a pin o¹ carried on a lever o² suspended from and
free to move on a pin at the upper end of a bracket 03. The reverse end of a similar
lever p is mounted on a pin p' at the lower part of bracket o³ and both of these levers
are formed with slots of pt.
A nut p³ formed with cylindrical internal screw threaded surface of a rectangular
outer surface is fitted in the slot p* of the lower link p with a plane surfaced head

page_text: bearing up against bracket, and a pin p² with screw threaded surface is fitted through
loose bearings in slot of of upper suspended link 02 and screws into the internal screw
threaded nut p³ so as to fix same in any adjusted position in the slots to give the
pawl o a regulated motion to move over say one, two or three teeth of the ratchet
wheel n³ at each action. The crosshead end g¹ of a connecting rod q is attached to
the upper end of the lower slotted link and the other end of the connecting rod is
attached to a projecting stud q² secured to the longitudinal shaft f¹ which receives a
to and fro motion from a cam or other ordinary mechanism.
A series of ratchet wheels would be kept in stock with different numbers of teeth
on them to suit the class of work to be done.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed I declare that what
I claim is —
First. In machinery for winding thread, yarn, and the like, the method of auto-
matically regulating the tension on the thread, consisting in moving the rod
by automatic mechanism so that it shall travel through a segment of a circle from
the time the winding of the cop is started until fully wound, substantially as set
forth.
Second. In machinery for winding thread, yarn, and the like the arrangement of
mechanism for automatically regulating the tension on thread, substantially as herein
described in reference to and shown in the accompanying drawings.
Dated the 28th day of May 1897.
W. R. M. THOMSON & Co.
96 Buchanan Street, Glasgow, Agents.