Year: 1888

page_text: Date of Application, 18th May, 1888
Complete Specification Left, 18th Feb., 1889
Complete Specification Accepted, 23rd Mar., 1889

page_text: COMPLETE SPECIFICATION.
Improvements in Selvedge Protectors for Use in Nap Raising and
similar Machines.
I, WILLIAM EDWIN HEYS of 70 Market Street Manchester in the County of
Lancaster, Consulting 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 apparatus or devices for protecting the selvedges of textile
fabrics in nap raising and similar machines.
When the selvedges of a textile fabric are wavy or irregular, they are liable during
their treatment in a raising machine, to be raised more quickly than the middle of the
cloth, and if the raising operation continued until the middle of the cloth is finished,
the selvedges will probably be ruined.
The apparatus constructed according to these Improvements consists of a lever
fulcrumed beneath or on the roller side of the cloth, and arranged so that one part of
the lever may be raised against the. selvedge of the cloth and thus keep it out of
contact with the raising rollers. During the operation of the machine the lever is
held in this position by means of a spring attached to the opposite end of the lever.
At other tinies the lever is held out of contact with the cloth by means of a catch or
detent which engages with the lever when it is pushed down. One such apparatus or
device is employed for each of the selvedges. That part of the lever which comes into
contact with the cloth is rounded on its contact face.
The accompanying drawings represent the selvedge protector in operation upon one
edge only of the cloth.
Fig. 1 represents a side view of the apparatus and Fig. 2 a front view.
The apparatus consists of a standard or a support B terminating at its lower end in
a screwed part which permits it to be attached to a suitable part of the framing of the
machine or to a bracket or fixing attached thereto. As shown in the drawings the
screwed part of B passes through a slot formed in the bar A, below which it is secured
by means of a nut and washer. Such a slot is advantageous as it permits the
apparatus to be fixed nearer to or further from the centre of the nap raising machine
and thus enables it to be readily adjusted for different widths of cloth.
In each of the Figs. the cloth is indicated by the thick line F; in Fig. 1 the upper
thick line represents the limit of the selvedge, and the lower thick line indicates a
longitudinal section of the cloth.
at c.
The upper end of the support B is slotted to receive the lever C which is fulcrumed
The lever is bent and has arms of unequal length. The longer arm L which
raises the selvedge out of contact with the raising rollers, is rounded so as to permit
the free passage of the selvedge. The shorter arm C of the lever is provided with a
number of holes into any one of which the end of a spiral spring R may be hooked.
This spiral spring is preferred to be enclosed in a copper casing S and it is also attached
to an arm or bracket B' on the standard B.

page_text: The form of the lever which it is preferred to employ is represented in Fig. 2. In
the bent portion of the lever a slot or groove E is formed in such a position that it
may be engaged by the end of the spring D. This spring is attached at its opposite or
lower end to the standard B.
As shown in the drawings, the apparatus is lifting the selvedge out of contact with
the raising rollers G G, but if it is not desired that the selvedges should be lifted, it is
necessary only to depress the arm L of the lever until the spring catch D enters the
notch E and holds the arm L out of action. To bring the selvedge lifting device again
into operation the arm L is raised by hand, when the spring R will raise the lever into
action as soon as the spring catch has left the notch E.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, as communicated to me
from abroad, I declare that what I claim is :-
A selvedge protector constructed and arranged substantially as and for the purpose
hereinbefore described and as illustrated by the accompanying drawings.
Dated this 14th day of February A.D. 1889.
WILLIAM E. HEYS.