Improvements in Apparatus for Automatically Regulating the Density of the Shot in Looms.
Year: 1898

page_text: Improvements in Apparatus for Automatically Regulating the
Density of the Shot in Looms.
I, JOHANN ALBERT SCHAUFELBERGER, of No. 20, Pflanzschulstrasse, Winterthur,
Weaver's 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 for automatically regulating the density of
shoot per unit of shoot in looms. The object of this invention is to change the
tension of the warp or the alternation of the warp according as to whether the
amount of the shot is less or more than the normal number.
In order that this invention may be the better understood I now proceed to describė
the same, reference being had to the accompanying drawings and to the letters and
figures marked thereon.
Figure 1 is a side view of the apparatus.
Figure 2 is a rear view thereof.
Figure 3 is a plan.
Figures 4 and 5 are two sectional views of a detail.
Figures 6, 7, 8 and 9 are a side view a front view, a rear view and a plan
respectively of a modification of the tension mechanism of the warp.
Figures 10 and 11 show a detail of Figure 6 in its position at the commencement
and at the finish of the operation.
Figures 12 and 13 show the apparatus as constructed to effect the alternation of
the warp.
As shown in Figures 1 and 3, a cylinder b, drawn to an enlarged scale in Figures 4
With
and 5, is situated on the counting roller a and is provided with a screw nut c.
the latter engages the pin d of a sleeve f adapted to move over the cylinder. A cog
wheel g is arranged on the sleeve f, with which engages a cog wheel / situated on the
axle of the grooved roller i. The cog wheel engages with the ratchet wheel o by
means of gearing k, l, m, n. A pawl p engages with the ratchet wheel o, and is
situated on a lever d which is pivotted at c³ on the frame of the loom and receives an
oscillating movement from the batten q. By the oscillating movement of the pawl p,
effected thereby, the ratchet wheel o is moved each time a predetermined number of
teeth. This movement is transmitted by the wheels k l m n and h to the wheel g
and by the latter to the sleeve f. The rotation of the counting roller a is effected in
accordance with the fabric made, which coming from the grooved roller i passes over
the counting roller a to the roller r for the fabric. When the number of shot deter-
mined by the change wheel or m is normal, the sleeve and the counting roller a
rotate evenly. However if the number of shot be less than the normal, or greater
than the latter, the slower or quicker rotation of the sleeve f caused thereby will effect

page_text: a side movement of the sleeve f, which by suitable intermediate means acts on the
regulator of the warp in such a manner that the warp tension or warp alternation is
regulated each time automatically in accordance with the amount of the shot.
20
For this purpose the sleeve has a second groove a in which engages the pin u of
a lever w attached to the small upright axle v. The axle has at the top an
indicator which moves over a scale on the breast-beam. The axle v carries below a
lever z, a pin a¹ which engages in a groove b² of the bevel gear c³ ³ adapted to slide
on the axle of the ratchet wheel o. According to the position of the lever s, either
the wheel o¹ or the wheel c² engages with the wheel d' on the axle f¹.
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When the sleeve ƒ makes a movement to the right owing to the wrong amount of
shot, the lever z is also moved to the right by means of the lever wand the upright
axle . This movement of the lever is indicated on the scale by the pointer .
The wheel c¹ engages with the wheel d¹ and causes the axle f¹ to revolve towards the
right. This movement of the axle f¹ is transmitted, by means of the bevel gear g¹gª,
the two chain wheels h¹ and ¹and the chain k¹ to the screw ", by which the nut m
and weights suspended therefrom are moved along the brake lever o¹ in the direc-
tion of the arrow pl. By the arrangement of the sleeve of the breaking of the warp
beam is thus reduced by the aforesaid intermediate means.
On the other hand if the sleeve ƒ moves towards the left, the upright axle with
pointer and the two levers wand z swings also to the left, the lever a effecting the
engagement of the wheel c³ with the wheel d³, whereby the axle f¹, and the screw (1
by the before mentioned gear, are turned in an opposite sense to that before and the
warp tension is increased.
It is not absolutely necessary that the transmission of the movement of the sleeveƒ
be effected by the intermediate means illustrated in Figures 1, 2 and 3; any other 2
arrangement may be designed for the same purpose, for instance such as shown in
Figures 6, 7, 8, 9, 10 and 11 with reference to the warp tension.
As shown in Figure 6, the rotation of the sleeve fis in this case also effected by a
lever pivotted at 3 on the frame of the loom and provided with a pawl p. This
lever de being connected to the batten q moves, during each forward motion of the 3
latter, the ratchet wheel o through the space of a certain number of teeth. This
movement is transmitted to the sleeve by wheels n, m, l, k, h and g.
Each movement of the sleeve f sideways is transmitted to the angle lever to pivotted
at e¹ on the breast beam y, which rests with its pins on the sleeve f in consequence
of the weight of the draw bar suspended from its longer member, and of the lever g¹ 3
pivotted around the boss f¹, see Figures 10 and 11. Thus the lever gl swinging
around the boss f¹ will rise or fall, according to the side movement of the sleeve f.
The position of this lever determines the greater or less backward movement of a
segment pivotted on the axle ¹, which segment is pulled backwards by the
weight k¹, until it is arrested by its projection and the lever g¹. The segment 4
receives a forward movement by means of the percussion rod m³ which is connected
with the lever d², because the pin n¹ engages in a slot of the percussion rod m¹. The
segment carries a number of change catches o¹ by means of which the ratchet
wheel pl, situated on the axle h¹, is rotated. This rotation of the axle h¹ and the
ratchet wheel p¹ is transmitted by the bevel gear 1 to the axle s¹. As the spiral #14
situated on the opposite end of this axle engages in the worm wheel z² fixed to the
warp beam g', the latter is rotated to a small extent and a certain length of warp
thread will be unwound. The amount of this unwinding determines the tension of
the warp. If for a certain amount of shot a large amount of warp is unwound, the
tension of the warp is decreased and if a small length of warp is unwound the warp 5
tension will become greater.
Therefore, when the sleeve moves to the right on account of the wrong amount
of shot, the longer member of the angle lever w swings downwards around e¹ with
the draw bar vand effects an adjusting movement of the lever g¹ around f¹, so that
the segment can be drawn further back by the weight. The position of the 5
pin n in the slot of the percussion rod m¹ has been altered correspondingly, so that
the latter makes less dead throw until it strikes against the pin n¹ and the ratchet

page_text: wheel pl will be moved to a larger extent. This movement is transmitted to the
warp beam q¹ by the before described gearing; the warp beam q' now delivers some
more warp, and the tension of the warp is decreased.
On the other hand if the sleeve fis moved to the left, the angle lover w with its
longer member and the draw bar swings upwards and the lever g¹ is adjusted in
+consequence in such a manner that the segment it is drawn back to a less extent, and
the movement of the ratchet wheel p¹ is less. The warp beam will thus deliver less
warp and the tension of the warp will become stronger.
The swinging beam w which receives its movement by means of an eccentric ¹ on
the crank axle is designed to equalize the different tensions of the thread during
opening and closing.
The bevel wheel 2 on the axle s¹ may be disengaged from the bevel wheel rl on
the axle ¹ by means of the angle lever y¹. Warp may then be wound on or unwound
from the warp beam by hand through the rotation of the hand wheel v¹ on the
axle s¹.
Another form of construction relating to the transmission of the movement of the
sleeve to the warp change mechanism, is shown in Figures 12 and 13.
In this case the movement of the sleeve is effected from a ratchet wheel o by
means of wheels n m 1 g.
The grooved roller i in this case is rotated by another ratchet wheel of on the axle
of which is arranged free to turn a segment a with a number of change catches b².
When the batten goes back, a draw hook thereon moves the segment a²
backwards, the ratchet wheel of is therefore partially rotated. The stroke of the
hook is calculated so that the hook makes a short lost movement at first until it
arrives at d³, when it rotates the segment a backwards.
The before mentioned rotation of the ratchet wheel c is transmitted by the bevel
wheels to the worm g²; the latter engages in the wheel mt on the axle of which
is situated which operates a wheel situated on the axle of the grooved
roller.
After the draw hook has drawn back the segment a³, the spring h² causes the back-
ward movement of the latter.
A chain k is attached to the segment a³ by means of an adjusting screw ", and is
wound on the segment. The piece 2 of the chain is connected to the lever m*
which is pivotted at n³ to the frame of the loom. A bar p² slides over this lever; it is
guided at q and bevelled in front. The bevelled part of the bar p determines the
greater or less backward movement of the segment a³.
The bar på is adjusted from the sleeve by a double lever u pivotted at t on a
support A, the pin of the double lever u engaging into the groove & of the sleeve f.
For instance if the sleeve moves to the left, the lever m will be able to rise, in
consequence of the bevel of the bar p², until it is arrested by the latter, and conversely
the segment a can be drawn further back by the spring h³. Consequently the hook
can travel with lost movement to only a smaller extent, until it strikes against ď³ and
the ratchet wheel can be moved a larger distance. This increase of movement is
transmitted by the before mentioned gear to the grooved roller i and the exact density
of shot is thus obtained. When the sleeve b moves to the right, the rod is moved in
opposite direction and a smaller movement of the grooved roller and ratchet wheel is
thus effected.
If no movement of the sleeve takes place and therefore no movement of the rod 14,
the adjustment of the grooved roller will remain the same.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed I declare that what
I claim is:-
Apparatus for the automatic regulation of the density of shot in looms having a
sleeve which is connected to the shot counting device by suitable gearing, and
which, if the amount or number of shot be less or greater than the normal, makes a
side movement on a cylinder b of the counting roller a in order to act through suitable

page_text: intermediate means on the regulator of the tension of the warp or on the regulator of
the warp change, so as to effect an automatic regulation of the corresponding warp
tension or warp change respectively.
FELL & JAMES,
Agents for the Applicant.