A New or Improved Device for Obviating the Ejection of the Shuttles in Looms.
Year: 1889

page_text: Date of Application, 26th Apr., 1889
Complete Specification Left, 24th Jan., 1890-Accepted, 1st Mar., 1890
PROVISIONAL SPECIFICATION.
A New or Improved Device for Obviating the Ejection of the
Shuttles in Looms.
I, ERNST WILHELM ALEXANDER BÄR, of Zschopau, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved contrivance for preventing the shuttles of
loons from springing out and has for its purpose to provide an absolutely safe, cheap
and convenient protecting device, at the same time removing the drawbacks inherent
to similar devices hitherto used.
To attain this end, I employ a protective trellis consisting of two or more parallel
rods or tubes laid crosswise over the warp-threads. Said trellis is adapted to be with
facility so returned to the lay cap, also during the movement of the lay, that the
rods or tubes are always lying in the same succession on each other close to the lay-
cap, but on actuating the loom, reassume by cen trifugal force and inertia such a
position as to form a secure protective trellis over the lash.
Supposing two rods or tubes are employed they are guided with their extremities
in kneed grooves provided in two suitable holders, secured to the lay-cap and when
at rest, lie close to the lay-cap on each other. To cause said rods or tubes when
thrust away from the lay-cap to settle each time at certain distances and in a certain
succession, the lower one has thinner pivots than the upper one and lies when at rest
in corresponding cavities pertaining to the grooves. The lower portion of the latter
is narrower, than the upper part, so as to allow the lower rod or tube when thrust
away from the lay-cap to roll down to the bottom of the grooves, while the upper
one is stopped in the knee, owing to the narrowness of the lower portion of the
grooves.
In case of three or more rods or tubes being employed, the grooves are provided
with additional successively narrowed portions for receiving the correspondingly sized
pivots of the rest.
To obviate also a lateral ejection of the shuttles, the holders are provided below
with ribs, to the inside of which are attached pieces of leather or other elastic
material.
The above grooves are provided on both sides of the holders to allow the latter to
be used on either side and as intermediate holders for divided rods or tubes in case of
broad looms.
D
11. 001
COMPLETE SPECIFICATION.
A New or Improved Device for Obviating the Ejection of the
Shuttles in Looms.
I ERNST WILHELM ALEXANDER BÄR of Zschopau Germany Manufacturer do
hereby declare the nature of my invention for "A NEW OR IMPROVED DEVICE FOR
OBVIATING THE EJECTION OF THE SHUTTLES IN LOOMs," and in what manner the
same is to be performed to be particularly described and ascertained in and by
the following statement and accompanying drawings:-
--
My said invention relates to an improved shuttle guard, that is a device to be
applied to the slay of a loom for the purpose of preventing the shuttle from flying

page_text: out when the loom is at work and consists partly of an arrangement of parallel rods
forming a trellis or barrier at right angles to the warp. The said rods are carried in
brackets so formed that the bars may be readily displaced when required. Attached
to ribs or projections on the brackets are flaps preferably of leather reaching down-
wards towards the shuttle. The said flaps are arranged transversely to the aforesaid
trellis or barrier and are intended to prevent the shuttle from flying out from the
sides of the loom. The brackets carrying the rods which form the trellis or barrier
in front of the reed are provided with grooves or slots in which the ends or journals
of the rods can slide and by contracting the width of the said slots in one or more
places and by making the ends of the rods of suitable successively increasing
diameters the rods may be successively arrested at different stages in their descent
and by distributing themselves in this manner they form an open trellis or barrier.
By pushing the bottom rod upwards all the higber ones are lifted with it when it is
desired to have free access to the reed or the warp in front thereof and the rods may.
then be placed in a suitably shaped cavity or resting place in the slot where they
will remain as long as the loom is at rest. The shock consequent on starting
the loom will knock the rods from their resting place and cause them to be
distributed in the protective position in the manner herein before referred to.
Usually I prefer to attach the slotted brackets rigidly to the slay but under some
circumstances it is better to hinge the brackets so that the rods may be lifted either
automatically or by hand so as to clear an obstacle by swinging the brackets in an
upward direction. In order to obtain access to the reed and warp when employing
this method of mounting the brackets it is only necessary to turn the brackets
upwards to their full extent and to give the bottom rod a tap when the rods will
run down the grooves to their resting place where they will lie until the shock of
starting the loom causes the brackets to fall downwards whereupon the rods will
descend and be successively distributed in their proper protective positions
according to the respective diameters of their ends or journals in the manner already
referred to.
In order that my said invention may be more fully understood I will now proceed
to describe the same with reference to the accompanying drawings in all the figures
of which the same letters refer to the same parts.
Figs. 1 and 2 are respectively a front and end view partly in section of a shuttle
guard having the rods mounted in slotted brackets rigidly fixed to the slay.
Figs. 3 and 4 are respectively front and end views partly in section of a shuttle
guard having the rods mounted in slotted brackets hinged to the slay.
Figs. 5 and 6 illustrate the application of a hinged shuttle guard to a loom and
means for actuating same.
In these figures only two transverse protecting rods are shown but it is to be
understood that this number may be varied in order to be adapted to shuttles of
various sizes and in place of rods tubes might be used.
*
In the case of looms so wide that the rods are liable to yield owing to lack of
support in the centre I may divide the rods into two or more shorter lengths and
provide one or more intermediate brackets for their support.
For this reason I find it convenient to provide all the brackets with slots on both
sides or even right through the bracket so that they may be used at either end of the
slay or as intermediate brackets if required.
Referring now to Figures 1 and 2 d is the top of the slay to which are rigidly
secured two brackets a one only of which is shown-provided with slots c¹ c² in
which can slide the journals or ends of the rods 6' 6 which lie at right angles
to the warp. When the loom is at rest and the rods 662 which form the front
.protective trellis or barrier are put back so that the weaver may be able to get at the
reed and warp the rods occupy the positions 61 62 in a suitably shaped resting
place near the top of the slay. The slots c' c³ in the brackets are of different widths.
The slot is sufficiently wide to admit the journal or end of the rod 6² but is too
narrow to admit the end of the rod 61. On the loom being started the shock: will

page_text: cause the rods b¹ 62 to fall forwards and downwards. The width of the slot c¹ is not
sufficient to allow the rod 6' to pass the rod b² therefore the latter will descend first
until it is arrested at the end of the slot c². The rod 6' having thicker ends will be
arrested at the entrance to the slot c² and will be retained there. The rods will then
have assumed the positions indicated by dotted lines at B' B2. The curves of the
slots at the places where the rods rest are so arranged as to present an obstacle to the
position of the rods being disturbed by the shocks incidental to the process of
weaving.
To ribs or projections on the brackets I attach flaps or end shields preferably of
leather for preventing the shuttle from leaving the loom at the sides.
Referring to Figs. 3 and 4 c is one of a pair of bracko's having slots of a
successively decreasing width for the purpose already fully described and d' d² are
rods sliding therein. The bottom of the lower groove is in this case shaped so as to
prevent the rod d² from being accidentally displaced. One or more stirrups or
binders E of metal or other suitable material embrace the rods d¹ and being
secured to the upper rod d¹ the latter is prevented from yielding in the event of
being struck by the shuttle.
The brackets c are secured to the rod D which latter is free to turn in bearings c¹.
A crank or handle D' may be formed at the end of the rod D for the purpose of
swinging the brackets o either by hand or automatically by the movement of some
other part of the loom for instance by the movement of the starting rod in such a
mauner as to lift up the brackets c when the loom stops or by the movement of the
slay itself. This latter mode of applying my said invention is necessary when there
are high temples or other obstacles near the front of the loom over which the rods
must rise when they approach thereto at each movement of the slay. The method of
effecting this automatic lifting is shown in Figs. and 6 to which I will now refer.
Fig. 5 shows the slay in its back position with the shuttle guard down in its
protective position. Fig. 6 shows the slay in its forward position and in this figure the
position of the shuttle guard indicated by dotted lines is that which it assumes when
automatically lifted to clear an obstacle. The position shown in full lines in Fig. 6 is
that assumed when the brackets C are turned quite up by the movement of the rod
which starts and stops the loom. In this position the rods d¹ d² may be easily
caused to fall to the end of the slot nearest the slay cap by a smart tap on
the rod d².
L is a bearing secured to a convenient part of the loom. H₁ is a lever having its
fulcrum therein. A weight G is connected by ineans of a cord to the lever H' so as
to pull it continually backwards or a spring may be used in lieu thereof. H' is
connected to the starting handle by means of a cord V in such a manner that when
the loom is started the lever H' is drawn forward and that on stopping the loom the
weight G or its substitute in the shape of a spring draws the lever H' backwards.
To the upper end of H' the crank or handle D₁ (see Fig. 3) is connected by means
of a cord V. The action is then as follows. Supposing the loom to be at work the
lever H' occupies its extreme forward position. The length of the cord V2 will then
allow the brackets c to descend when the slay is in the back position as in Fig. 5 but
as the slay moves forward the cord will pull at the end of the crank or handle D¹ and
raise the brackets c at each movement of the slay. On the loom being stopped the
lever H¹ will assume its extreme back position and the pull of the cord V* will raise
the brackets c so that the shuttle guard will be in the position shown in full lines
in Fig. 6 and will remain in that position until the shock of starting the loom causes
it to fall forward and downwards. The extent of movement of the shuttle guard is
determined by the lengths or points of connection of the lever H₁ and the crank or
handle D¹. A connecting link may be used instead of the cord V.
The means for rocking the shuttle guard by the motion of the slay in the manner
above described may be quite independent of the starting handle in which case the
lever H may be dispensed with and the crank or handle D' then be connected to
some fixed part of the loom.
may

page_text: 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―
1. The use combination and arrangement of the parts constituting a shuttle guard
attached to the slay of a loom capable of having the rods displaced and brought
automatically into the protective position by the shock produced when the loom
commences working substantially as hereinbefore described and shown.
2. In a shuttle guard the use of brackets having slots of successively decreasing
width in combination with transverse rods the ends of which successively increase in
diameter substantially as and for the purpose hereinbefore described and shown.
3. The mode of attaching the shuttle guard to the slay and of actuating the former
by the means described and shown with reference to Figures 3, 4, 5 and 6 substantially
as and for the purpose herein before set forth.
4. In combination with a shuttle guard having brackets and movable transverse
rods carried therein as herein before described the use of the flaps attached to ribs
on the said brackets substantially as and for the purpose hereinbefore set forth.
Dated this Twenty third day of January 1890.
JULIUS ALLMANN & Co.,
70, Deansgate, Manchester, Agents for Applicant.