Improvements in Loom Let-off Motions.
Year: 1892

page_text: Date of Application, 7th Mar., 1892
Complete Specification Left, 7th July, 1892-Accepted, 3rd Sept., 1892
PROVISIONAL SPECIFICATION.
Improvements in Loom Let-off Motions.
I, WILLIAM Low, of 11 Stirling Street, Dundee, in the County of Forfar,
Factory Manager, do hereby declare the nature of this invention to be as
follows:-
This invention relates to looms for weaving textile fabrics, its object being to
uniformly retard the forward rotation of the yarn beam, by means of a friction
strap.
In carrying out my invention I place a friction strap partially round the drag-
head, the one end being attached to an adjustable spring hook, that is to say, to a
hook passing through a bracket fixed on the gable or frame of the loom, the tail of
the said hook being screwed. Upon the screwed portion of the hook is a nut-
preferably in the shape of a hand wheel, the wheel being placed in any convenient
position said nut working against a spring, the tension induced by it being
sufficient to give the necessary friction between the strap and the draghead, the
friction being varied by means of the nut and screw. The other end of the strap
is attached to a stud or bracket on the gable of the loom.
If desired the end of the strap may terminate in a chain or a series of links, in
order that the length of same may be made to suit different sizes of dragheads.
Dated this 5th day of March 1892.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Loom Let-off Motions.
I, WILLIAM Low, of 11 Stirling Street, Dundee, in the County of Forfar,
Factory Manager, 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 looms for weaving textile fabrics, its object being to
uniformly retard the forward rotation of the yarn beam, by means of a friction
strap.
The accompanying sheet of explanatory drawings illustrates the method of
carrying out my invention according to one modification.
Figure 1. represents a side elevation, and Figure 2. a plan of my improved loom
let-off motion.
In these drawings the same reference numerals are used to mark the same or like
parts wherever they are repeated.
In carrying out my invention I place a friction strap 3.-preferably consisting of
a steel band covered with leather on its internal, or rubbing face-partially round
the draghead 4, of the yarn beam 5. the one end 6. being attached to an adjustable
spring hcok 7. that is to say, to a hook passing through a bracket 8, fixed on the
gable or frame 9. of the loom, the tail 10. of the said hook being screwed. Upon
the screwed portion of the hook is a nut 11.-preferably in the shape of a hand
wheel, the wheel being placed in any convenient position-said nut working against
a spring 12, the tension induced by it being sufficient to give the necessary friction
between the strap 3. and the draghead 4, the friction being varied by means of the
nut 11, and screw 10. The other end of the strap 13. is attached to a stud or
bracket 14. on the gable 9. of the loom.

page_text: If desired the end of the strap 13, may terminate in a chain or a series of
links, in order that the length of same may be made to suit different sizes of
dragheads.
In using my apparatus, the yarn beam filled with yarn is placed in position, and
actuated in the ordinary way, the friction strap 3. is then adjusted until there is
sufficient friction between it and the draghead to give the required tension to the
yarn, that tension being maintained during the time the yarn beam is being emptied
by adjusting the nut 11.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is-
(1) In loom let-off motions, the combination of parts for adjusting the tension
of the yarn, substantially as herein before described.
(2) In loom let-off motions of the type hereinbefore described, the covering of
the internal or rubbing surface of the friction strap, with leather as described.
Dated this 22nd day of June 1892.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicant.