Improvements in Yarn Warping Machinery or Apparatus.
Year: 1892

page_text: Date of Application, 5th Feb., 1892-Accepted, 19th Mar., 1892
COMPLETE SPECIFICATION.
Improvements in Yarn Warping Machinery or Apparatus.
We MANEKLÁLL MOTILALL PARIKH, General Agent, and DAHYABHAI
MULCHAND, Weaver, both residing at Ahmedabad, Bombay Presidency, India,
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:-
Our said invention relates to improvements in machinery or apparatus for forming
chains or warps for weaving more particularly such as are used in India for weaving
in hand looms.
The principal parts consist of an upright framework on which the warp is laid
and a carriage containing a number of cops or bobbins of yarn to be formed into
chains or warps.
The upright framework hereinafter referred to as the warping frame consists of
a number of perpendicular posts each of which carries a series of pegs projecting
from and at right angles to the post. The posts are preferably arranged in a circle
of any convenient radius. Parallel to the warping frame is a tramway on which
runs a carriage which is propelled by manual labour. On the carriage is mounted
a creel in which are placed the cops or bobbins of yarn. The ends or threads from
each cop or bobbin pass upwards over or through suitable eyes or guides and
downwards to tubes or guides in a vertically reciprocating distributing bar.. The
tubes or guides therein correspond in number and distance apart with the pegs in
the warping frame. The object of the vertically reciprocating motion of the dis-
tributing bar is to guide the threads issuing from the tubes therein alternately over
and under the pegs in the warping frame. By means hereinafter to be described
the reciprocating motion of the distributing bar is reversed at the end of each
journey of the carriage so that at the return journey the threads are carried under
the pegs which they passed over during the forward journey. By this method of
distributing the threads a series of interlaced chains or warps are formed on the
horizontal pegs of the upright warping frame.
In order that our invention may be more clearly understood we will describe the
same with reference to the accompanying two sheets of drawings in which the same
letters refer to the same parts in all the figures.
Fig. 1 is a front elevation of part of the warping frame and of the carriage.
Fig. 2 is a plan showing the disposition of the tramway.
Fig. 3 is a partial plan of the carriage.
Fig. 4 is an end view partly in section of the carriage and warping frame.
In these figures a are the vertical posts of the warping frame, 6 the horizontal
pegs on which the chains or warps are laid and interlaced as shown at c in Fig. 1.
dd are the rails forming a tramway on which runs the carriage e the wheels of
which may be mounted in swivelling or bogie bearings so that they may accommodate
themselves to the curvature of the rails.
The cops or bobbins fare held in a suitable creel or frame mounted on the
carriage. h is the vertically reciprocating distributing bar having a series of
guides or tubes h¹ corresponding in pitch or distance apart to the pegs 6 of the
warping frame.
The threads from the cops or bobbins of pass upwards through or over guides or
hooks and then downwards in a diagonal direction to the guide tubes h¹ by which
they are distributed over and under the pegs b.
To impart to the distributing bar the necessary up and down motion a cam rail
is provided on which runs a roller h² at the foot of the distributing bar, which

page_text: follows the elevations and depressions of the cam rail. A spring /³ may be pro-
vided to bear part of the weight of the distributing bar and thus prevent shock as
the roller comes into contact with the elevations of the cam rail k.
The elevations and depressions in the cam rail are so arranged that the threads
are guided alternately over and under the successive pegs as the carriage
travels along.
The cam rail k is free to move lengthwise between guides k* and has fixed to it
at each end a bracket against which the carriage strikes at the end of its journey.
The bracket ³ is thus driven against a stop block k when the carriage has attained
its extreme position to the right. On the carriage reaching the end of its journey in
the opposite direction it will strike against a corresponding bracket and the cam rail k
will be drawn forward and the bracket 3 will then occupy the position shown in
dotted lines at in Fig. 1. By this reciprocating action of the cam rail the position
of the elevations and depressions thereof is reversed at each journey and a corre-
sponding reversal of the action of the distributing bar h takes place resulting in the
crossing of the threads in the manner shown in the upper part of the warping
frame in Fig. 1.
The length of the warping frame, gauge of the railway, the number of pegs and
of warps to be made may be varied at will without departing from the essential
features of our said invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is-
1. The use combination and arrangement of a vertical warping frame and a
travelling creel bar having a vertically reciprocating distributing bar operated by
a longitudinally shifting cam rail for simultaneously laying and interlacing a
number of threads in the form of chains or warps substantially as hereinbefore
described and shown.
2. In a chain warping machine in which a number of threads are simultaneously
distributed about a series of horizontal pegs the combination of a vertically recipro-
cating distributing bar and a movable cam rail shifted longitudinally by the impact
of the carriage at the end of each journey substantially as and for the purpose
hereinbefore described and shown.
Dated 4th day of February 1892.
EDWARD TURNER WHITELOW,
70, Deansgate, Manchester, Agent for the Applicants.