Device to Prevent the Breaking of the Picking Cord or Strap on Looms.
Year: 1899

page_text: Date of Application, 2nd Dec., 1899-Accepted, 11th Aug., 1900
COMPLETE SPECIFICATION.
Device to Prevent the Breaking of the Picking Cord or Strap on
Looms.
I, WOJCIECH BAUMERT, Weaver Foreman, and a Subject of the Emperor of
Russia, at present residing at Zawiercie, in the Kingdom of Poland, part of the
Russian Empire, 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 has reference to a device by means of which it is possible to
overcome all the various inconveniences accompanying the working of the whip
lever used in power looms for imparting the motion to the picker which in its
turn is used to impell the shuttle and causes it to be violently thrown through
the shed of the warp. In the devices of that kind as used heretofore, the operator
had to struggle against the great liability of the cord or strap as well as the whip
lever to break off altogether under the constant strain put upon them. In such
cases it became necessary to stop the loom for a considerable time until the
camage could be repaired which was always entailing quite a considerable expense
which was greatly interfering with the economical working of power looms of
this kind in view of the great frequency of repairs of this kind being necessary.
All attempts thus far made to remedy this serious defect and to insure a longer.
life of the whip lever and of the picking cord, have as far as I am aware proved
unsuccessful owing to the failure to discern the prime cause of the difficulty it
was intended to overcome.
From my experience I have found that the defect is due to the lack of elasticity
in the movement of the whip lever shaft and of the parts connected or attached
thereto, such as the whip lever proper, the picking cord and the picker, these
parts being rigidly fixed to their respective parts of attachment so as to be exposed
to the entire force of the recoil which was soon wearing off even the very best
and strongest material.
In order therefore to overcome the drawbacks heretofore set forth and which
it was thought impossible to avoid, I break the force of the recoil shock by the
introduction of elastic stops in consequence whereof a greater durability of the
working parts and a smoother travel of the machine is insured.
My invention is illustrated in the accompanying drawings which illustrate the
attachments of the whip used to impel the picker with the device embodying my.
invention:-
In the drawing: Fig. 1 is a vertical section with some parts in elevation, and
Fig. 2 is a top view of a construction to which my invention is applied. Fig. 3:
shows part section, part end view of another form of construction embodying.
my invention; Fig. 4 is a top view of the modified construction shown in Fig. 3.
Fig. 5 is a detail, illustrating the stops for breaking the force of the impact.
Referring particularly to Figs. 1 and 2: a and b represent the usual round
piates of well known construction attached to the shaft in any weil known
manner and to which the whip lever c, may be adjustably attached. The inner
faces of the two plates a and b are fluted so as to allow of adjusting the whip in a

page_text: horizontal plane. d is a stop secured to one of the circular plates bearing the
whip lever, this being the lower plate in the preferred construction shown in the
drawing. A block e is fixed to the frame of the machine in any appropriate
manner by screws, bolts or otherwise, the said block having a slot f the interior
of which is fluted as shown at g. is a block shaped so as to fit with in the slot f
of the block e. Said block h is fluted on its surface as shown at gl so as to register
guide
with the fluted portion g of the block e which as will be seen serves as a
for the block insuring the same against lateral displacement. In the preferred
construction shown in the drawings, the block his bolt shaped and made to taper
Between this nut h
out into a pin to which is attached the head or nut h2.
and the front end of the block e a spring is inserted. The free end of the bolt
shaped block h is slightly curved as illustrated in the drawings. The slot k is
provided in this curved portion and made to receive the bolt adjustably secured
by the nut. At the concave side of the curved portion of the block ha
stop is attached to the bolt The inner concave side of the curved portion
of the block as well as that part of the stop opposite are also preferably
fluted on their respective surfaces.
The device operates as follows. From the description and from an inspection
of the drawing it will be apparent that the stops & and will touch each other
when the plate a has been carried around so as to give a sharp sudden jerk to the
shuttle. It will also be evident that the force of the impact is greatly mitigated
since the pressure exerted upon the stop 3 will cause the block h to move in a
horizontal direction within its guide way g, g¹. The force of the recoil is at
the same time taken up by the spiral spring i which by its elasticity will take up
the shock of the impact and prevent the jerking movement of the paris. Thus
it will be seen that the whip lever as well and the picking cord or strap cannot be
worn away so quickly as will be the case when they are exposed to the whole force
of the sudden violent recoil shock which is on the contrary converted into a smooth
slow movement putting no strain whatever upon the material.
While I have found the construction just described to be preferable for the
ordinary kind of power loom as it can easily be attached to any known form or
system of construction of such looms without the necessity of changing any of
the parts of the machine, I have for some purposes, especially for looms which
are still in the course of construction, found it convenient, to use the modified
construction set forth in Figs. 3 and 4 of the drawings.
Referring to Figs. 3 and 4: is the shaft controlling the movement of the
whip and of the picker. Parts 1, m are respectively attached to the upper and
lower plate a and b or the whip lever may be directly attached to one of the two
parts 1, m of the casing which in this case may replace entirely the ordinary
circular plates a, b. A spiral spring n is placed in the hollow formed by the two
halves l, m, the ends of the said spring n being laterally bent so as to fit into the
notches p and of the said casings 1. m. The rotation of the upper casing m will
therefore cause the spring to follow that movement thus putting tension upon it.
Thus it will be apparent that the spring n in the modified construction represented
in Figs. 3 and 4 is doing the work of the block hand of the spring i as used in
the preferred construction illustrated in Figs. 1 and 2 of the drawing. A stop r
is also fixed to one of the casings 1, m which in the manner already described with
reference to the similar part of the construction Figs. 1 and 2 is used as a stop
in connection with the stop 3. By this means a double spring action of the parts
is ensured so that the shock is balanced twice that is to say first in the interior
of the casing 1, m by means of the spring n and on the outer periphery of the
curve described by the working parts of the whip by the impelling of the stop r
with the stop . which is taken up by the sliding part 7 and the action of the
spring. The blocks serves to attach the device to any suitable part of the
loom. The lower rim of the casing m is provided with notches or indentations m
which register with similar notches or indentations of the upper rim of the lower
casing the length of the said notches in a horizontal direction being however
i

page_text: so arranged as to allow of a certain play of the two halves 1, m sufficient to permit.
to put tension upon the spring n.
By the construction as illustrated above and in the accompanying drawings I,
have succeeded in obviating all the difficulties seriously interfering with the
regular and economical working of the shuttle moving parts of the power looms.
as hitherto constructed, the sharp and violent impact of the parts being entirely
done away with which results in a great saving in material and a better yield
of the machine itself.
The importance of the device when applied to looms, will be apparent from
the following figures. The economy effected in working material has been found
to amount to 75% for the picking cord, 50%, in material for the whip, 50% on
pickers, and 50% on spindle heads. It has also been found by practical experience
that by employing my invention inferior grades of picking cords or straps could
be used with advantage, so that a great saving is already effected by the working
material employed. Again a longer life of the parts is ensured, there being.
incomparately less strain put upon them.
In combination with the elastic and spring like movement of the working
parts, I have also provided means to adjust the spring actuated stop in vertical-
as well as in horizontal direction; the vertical adjustment being effected by
the grooves g, 9, as it is only necessary to remove the block from its guideway
and then introduce it again, thereby raising or lowering it within the slot fat
will. The stop is horizontally adjusted by adjusting the stop bearing bolt kl
within the slot k, the grooves formed upon the adjoining surfaces of the parts h
and securing the stop against accidental displacement.
In order to adapt my invention to any size of shuttle driving shaft o, I make
use of a toothed part t (Figs. 1 and 2) which is inserted in a cut out portion of the
lower circular driving plate b, the said part t being interchangeable so as to
agree with the diameter of the shuttle driving shaft (Figs. 3 and 4) or u
(Fig. 1 and 2).
It is obvious that my invention is capable of many modifications in the con-
struction of the various parts without however departing from the spirit of my
invention.
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. In looms of any kind or construction an elastic stop spring actuated in
combination with the whip driving parts, said stop taking up the impact upon
the insertion of the shuttle into the warp substantially as described.
2./ In looms of any kind or construction, an elastic stop spring actuated, being
adjustably attached to the frame of the machine and impelling against a stop
rigidly attached to one of the plates bearing the whip lever, substantially as
described.
3. In looms of any kind and construction an elastic stop spring actuated in
combination with the whip driving parts, means to adjust the said stop in a
vertical and a horizontal direction, substantially as described.
4. In looms of any kind or construction, an elastic stop (³). a block (h),
adjustably attached to the frame of the loom or machine, the said block being
guided horizontally and recoiling against the action of a spring (i) the free end
of the said block being curved, a slot (k) in said curved portion and means to
adjustably fix the stop (3) within the said slot, a stop (d) attached to one of the
plates bearing the whip lever, substantially as described.
5. In looms of any kind and construction, an elastic stop, a block spring
actuated, means for attaching said stop to the free end of said block, grooves upon
the sides of said block and registering with the grooved inner side of an adjust-
able guide way attached to the frame of the machine, substantially as described.
6. In looms of any kind or construction, an elastic stop, a block spring

page_text: actuated, means for attaching said stop, to the free end of the said block, the
inner concave surface of the curved end of the said block being grooved or fluted;
grooves upon the surface of the adjustable stop, the-block carrying the adjustable
stop being horizontally guided in a guideway adjustably secured to the frame of
the loom or machine, a stop fixed to the plates to which the whip lever is attached,
substantially as described.
7. In looms of any kind or construction, an elastic stop spring actuated and
fixed to the plates to which the whip lever is attached, substantially as described.
8. In looms of any kind or construction, a hollow casing, made up of two
lalves and attached to the whip lever driving shaft, a stop on said casing,
notches or indentations in the rim of said casing halves, to register with each
other but made to allow of a certain play of the two halves, a spring contained in
said casing and attached to the wall thereof, substantially as described.
9. In looms of any kind or construction a spring actuated stop attached to the
whip lever carrying plates an adjustable stop attached to the frame of the
machine, substantially as described.
10. In looms of any kind or construction, a hollow casing a spring and
receiving the motion of the shuttle driving shaft a stop attached to said casing,
an adjustable stop, spring actuated and attached to an outwardly curved lever,
the said lever being, adjustably secured to the frame of the machine or loom,
substantially as described.
11: In looms of any kind or construction, in combination a stop spring actuated
the lower whip driving plate attached to the shuttle driving shaft having a central
interchangeable portion and means to securely fix said interchangeable portion in
the said lower driving plate, substantially as described.
1
1000
EUGEN FOLKMAR,
Agent for Applicant.