Improvements in Means for Changing Shuttles in Looms on Failure of Weft.
Year: 1898

page_text: Date of Application, 31st May, 1898-Accepted, 13th Aug., 1898
COMPLETE SPECIFICATION.
Improvements in Means for Changing Shuttles in Looms on Failure
of Weft.
I, FRIEDRICH WILHELM ROHRIG, partner of the Firm of C. F. Klein-Schlatter,
Barmen, Brucherschulstrasse No. 11, Rhenish Prussia, Germany, Manufacturer,
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 improvements in looms and it has for its objects to
allow automatic change of the shuttles when a weft thread is broken or when a
bobbin has been run empty and this without requiring the stopping of the
machine.
I attain this by combining with the revolving box a feeding receptacle or
hopper reciprocating with the batten, which allows always a full bobbin to drop
into the box of the revolver following immediately the one in working position
and which is turned in working position as soon as the weft thread breaks or as
soon as the bobbin has been emptied, so that a new bobbin will take the place of
the preceding one, which was thrown out of the box and that consequently no
stoppage will have to take place. The devices which have been in use hitherto
with the same object in view are most of a complicated nature and they can not be
applied to ordinary looms without requiring great changes in the same and there-
fore causing great expenses.
My new arrangement very simple and can be applied with any loom having
a revolving box and allowing the addition of the few new details, as will be seen
from the following description and the accompanying drawing, in which:
Fig. 1 is a vertical longitudinal section of the loom showing only so much of
it as is necessary for the understanding of the new arrangement;
Fig. 2 is an outside view of the same;
Fig. 3 is a view in plan;
Fig. 4 is a section of the revolving box and the feeding receptacle in an enlarged
scale;
Fig. 5 is a view in plan of the revolving box in an enlarged scale.
Fig. 6 is a sectional front view of Fig. 5 along line I-I
A is the main shaft of the loom which drives by means of gear wheels indicated
in dotted lines the excentric shaft B, which makes half the number of revolutions
of the shaft A; the batten C, made to oscillate in known manner by the shaft A
carries at its top end a revolving box D, which is journalled in brackets of a
frame E. At the front side of the frame is fixed to a standard G the receptacle
or magazine F, which moves to and fro with the batten and is of a shape corre-
sponding to that of the shuttles; it closely touches the revolver without hindering
its turning at such a position that the box in the revolver standing just opposite
to it forms, as it were, the lowest compartment of the magazine F. Therefore
the lowest shuttle stored in the magazine lies always in the respective box of the
revolver and when this is turned that fractional part of a whole revolution as
there are boxes in the revolver, said shuttle will be brought into the working
position and it can at once be set in action. The preceding shuttle is thereby
brought out of the working position, but it is still held in the revolver by a cover-

page_text: fore end is pulled down and with it the bar L, which takes hold of a tooth of the
wheel J and so causes this to be turned in proper ratio.
It will thus be seen that when a weft thread breaks, or when a weft bobbin has
been totally emptied, the fork a looses its support at the forked end; its rear end
falls down and is thereby caught by the arm e, which pulls it towards the breast
beam and with it the fork carrier h; this strikes against the lever Y, which turns
the shaft W and by this the rear end of lever V is raised and pushed against the
lever Q, which in consequence of this movement is brought in contact with the
lever S and is thereby raised thereby actuating the lever N so that the foreend of this
pulls the bar L downwards, the hooked upper end of which turns the revolver box
so much, as to bring a new shuttle box with a full bobbin in it in working
position; the new bobbin having taken its place in the box automatically in falling
into it by its own weight from the magazine F.
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 the arrangement for automatically exchanging the shuttles con-
sisting of a magazine F for full shuttles, which is connected with the revolver
box D and oscillates to and fro with it, without turning with the same nor
hindering its turning, but allowing always the lowest shuttle to enter freely and
automatically into the box, so that when the revolver is turned part of a revolu-
tion in consequence of the breakage of a weft thread or of a bobbin having been
emptied, a new shuttle will be brought automatically in working position whilst
the preceding one will be taken out of the revolver also automatically, the whole
as described and illustrated and for the purpose set forth.
2.) In a loom in combination with a revolver box 1) a magazine F for full
shuttles so fixed to the revolver frame that its lower end fits exactly to that shuttle
box in the revolver, following the one in working position that the lowest shuttle
in the magazine falls automatically into the box, a guard plate g, a channel h¹
taking up free shuttles, a ratchet wheel T on the shaft of the revolver, a hooked
bar L turning the revolver when moved up and down by a lever N in consequence
of the breakage of the weft thread or the working bobbin having been emptied,
the whole as described and illustrated.
3.) In a loom in combination with the shaft B a crank f carrying a roller fl
setting in oscillations a lever e, which by its upper end takes hold of the fork a
when the latter is allowed to fall in consequence of the breakage of a weft thread,
a fork carrier h combined with the fork a and abutting against the free end of
a bent lever Y keyed to a shaft W; a lever V fixed at the outer end of said shaft
and abutting with its free end against a bar Q at the end of a lever N, said bar
being pulled out of contact with an oscillating lever S by a spring U and caused
to be connected with said lever S by raising the lever V; an excentric B on shaft B
causing the lever S to be moved up and down; the whole as described and illus-
trated and for the purpose set forth.
4.) In combination with the revolver box of a loom a bar Z suspended on a
bolt and reaching with its free hooked end between the frame E of the revolver
and its inner end, so as to strike against the projecting ends of the shuttles and
cause the latter to be pulled out of the shuttle box when the latter is moved to
and fro, as described and illustrated and for the purpose set forth.
T
1 13
Aut
1000
FRIEDRICH WILHELM RÖHRIG,
Partner of the Firm of C. F. Klein-Schlatter.
Per Karl J. Mayer, Agent.