Improvements in Shuttle Guard Apparatus for Use in Looms for Weaving.
Year: 1889

page_text: Date of Application, 13th May, 1889-Accepted, 15th June, 189
COMPLETE SPECIFICATION.
Improvements in Shuttle Guard Apparatus for Use in Looms for
Weaving.
I, ROGER CHARNLEY, of 2 Havelock Street, Preston, in the County of Lancaster,
weaving 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 :-
As ordinarily applied to looms for weaving a shuttle guard consists essentially of a
rod or bar jointed or hinged or otherwise mounted upon the front part of the slay cap
and is so arranged that when the loom is in motion the rod or bar is in such a position
over the shuttle race that the shuttle cannot fly out of the "shed." To permit of
access to the interior of the shed when the loom is stopped the rod or bar is in some
cases arranged to be moved out of the way by hand and in others by apparatus
operated by the "knocking-off" mechanism whereby the rod or bar is moved out of
the way when the loom is stopped and returns to its former position when the loom is
re-started.
In the several arrangements of such apparatus heretofore known to me the
stationary position of the rod or bar is found in practice to be objectionable inasmuch
as the rod or bar projects so much in front of the reed that the area of the weaver's
operations on the face of the woven cloth is interfered with and curtailed.
My invention is designed to remedy this defect by causing the rod or bar
(hereinafter termed the "guard rod") to rise or recede towards the face of the slay
cap so as to be out of the weaver's way when the loom is in motion and the reed
beating up" and my improvements also provide means whereby this rising or
receding effect on the shuttle guard may be temporarily performed whilst the loom is
in motion so that the course of the shuttle as it passes through the shed may be
observed.
In the accompanying drawings
Figs. 1 and 2 are respectively front and end elevations shewing so much of a loom
as is necessary to illustrate the nature and application of my said invention and
Figs. 3 and 4 are end views shewing portions of the apparatus relating to my said
invention drawn to a larger scale.
The guard rod a (which may be of any suitable cross section) preferably consists of
a metal tube having a flat underside wing of sheet metal-(see sectional view at
Fig. 5) and is according to my invention carried at each end upon the extremities of
arms one near each end of the reed c and fastened at their other ends to plates d
secured to or forming one piece with the ends of the pivots or axes e which are
mounted in bearings f on the outer extremities of adjustable projecting brackets or
arms g secured to the front of the slay or lathe h. The arms are capable of radial
movement with the pivots e as centres and the arrangement is such that when the slay
or lathe moves towards the front of the loom the guard rod a will be turned or
moved upwards so as to occupy a position in front of the slay cap i (see Fig. 4 and
dotted lines Fig. 3). A helical or spiral spring j coiled round a continuation of the
pivot e is so arranged as to exercise a twisting pull upon the guard rod a so that if left
free the guard rod would move or turn up radially towards the slay cap i.
side of the loom (preferably at the driving side although by means of a cross shaft
the mechanism might be operated from the opposite side of the loom) the end of the
pivot e has fastened to it the upper extremity of a depending arm or swing lever k
having at its lower end a bent or projecting part and an intermediate arm or
horizontal finger m.
An arm n on the end of a pivot o carries at its outer extremity
a horizontal finger p (indicated by a circle in dotted lines at Figs. 3 and 4) which is
pushed or held against the back of the depending arm k by means of a band or belt y
At one

page_text: (passing partially round and secured to a boss or enlarged part fast on the pivot o)
whose other end is fastened to the lower end of a helical springs (indicated in
Figs. 3 and 4 in broken outlines so that the parts behind the said spring may be more
clearly seen). The upper end of the springs is suitably connected to the top of a vertcal
rod t rising from a boss fast upon the upper part of the ordinary brake lever rod u
in the
such rod supporting at its lower end the outer extremity of the brake lever
usual manner Another band or belt w passing partially round the boss is fastened
at its other or lower end to a boss fast upon the lower part of the brake lever rod u.
ay are stops or projections fastened to the framing B of the loom.
As the slay moves towards the front of the loom the horizontal finger m in due
time meets the vertical face of the stop a the arm being thereupon gradually
pressed against and pushing back the horizontal finger p the arm & and the guard
rod a meanwhile changing their position from that shewn (in solid lines) in Fig. 3 to
that shewn in Fig. 4 when the finger m will have passed under and along the diagonal
underside of the stop until the finger p has met the stop y whereupon the reed
"beats up" and the slay then returning on its backward journey the parts resume
their former positions the shuttle being again "picked" through the shed 20 with
the guard rod a in the required position over and adjoining the shed.-
Crepresents the ordinary "knocking-off" or "spring bandle" arranged so that
when the loom is to be stopped the handle is moved sidewise and thereby lowers
the brake lever rod u and the brake lever (all in the usual manner) thus imparting
a downward pull on the band or belt w which thereby pulls or brings round the
arm n and finger p to the position shewn in dotted lines 21 in Fig. 3. The pressure
of the finger p on the back of the arm k being thus withdrawn the arm k aided by
the recoil of the spring moves along with the guard rod a into the position shewn
in dotted lines in Fig. 3. When the loom is re-started by the handle being moved
in the opposite direction the movement of the parts as just described is reversed and
they resume their former relative positions the apparatus being again in readiness for
operating as before described.
A third belt shewn in dotted lines 22 is also connected at one end to the boss r
and whilst the loom is in motion the pressure of the finger p may be withdrawn
from the back of the arm k by pulling at the belt 22 until the finger n is brought
round to the position shewn at 21 the arm & and, guard rod a being then at liberty to
recede to the position shewn in dotted lines in Fig. 3 and the guard rod a having
been moved out of the way the course of the shuttle as it passes through the shed
may be readily observed.
The finger projecting from the bottom of the arm k is designed to prevent the
finger p from getting in front of the arm k when the downward pull upon, either of
the belts 21 or 22 has been withdrawn.
1 cause the underside of the arm (at 23) in its downward radial movement to
meet and to rest upon a stop (not shewn in the drawings) to prevent the guard rod a
from going beyond its required position over the shed during the pick of the shuttle
and I preferably utilize the upper side of the ordinary metal block known as the
spindle stud and make it answer as the stop referred to. Any other suitable
arrangement may be employed whereby such stop and facilities for its adjustment
may be provided.
*
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. In looms for weaving the use or employment of a guard rod which is moved
from its lowest position over the shed in the direction of the slay cap by the move-
ment of the slay or lathe towards the front of the loom and is returned to its lowest
position by the return or backward movement of the slay or lathe substantially as
described and shewn in the drawings for the purpose specified.
2. The combination or arrangement of parts whereby the movement of the "spring
handle" of a loom for the purpose of stopping or starting such loom causes the

page_text: guard rod to assume its highest and lowest positions respectively in manner sub-
stantially as described and shewn in the drawings.
3. In combination with an arrangement of shuttle guard apparatus'such as is herein-
above described the use or employment of a belt such as 22 or its equivalent
arranged and operated substantially as described and shewn in the drawings for the
purpose specified.
101 JMT 1000
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.