Improvements in Mechanisms for Operating Healds or Heddles and Shuttle-boxes Used in Looms for Weaving.
Year: 1888

page_text: Date of Application, 3rd Sept., 1888
Complete Specification Left, 3rd June, 1889-Accepted, 13th July, 1889
TRUYIDIONAL TUIFICATION.
Improvements in Mechanisms for Operating Healds or Heddles and
Shuttle-boxes Used in Looms for Weaving.
I, JOHN PARK of Skipton in the County of York, Designer do hereby declare the
nature of this invention to be as follows, that is to say :-
It relates to improvements in mechanisms for operating healds or heddles used in
looms for weaving and consists of arranging and constructing the parts forming
said mechanisms in such a manner that the efficiency thereof is greatly enhanced.
Respecting the beald operating mechanism the object of my invention is attained by
mounting suitable rack and pinion mechanisms, preferably, beneath the healds when
placed in the loom, one pinion and two upright racks with their lever connections
being employed for each leaf of said healds, one of said racks being made to receive
or to be connected to the lower shaft of one leaf of said heaks and to operate in con-
nection with one side of said pinion while the other rack is arranged to operate on the
opposite side of said pinion, each of the said racks being operated by separate pattern
mechanisms in such a manner that when the former is operated thereby in one direc-
tion, say upward, the latter will be operated in the other direction which in this case
would be downward, one of said arrangements of pattern mechanisms imparting said
motion at one time while the other does so at the other time.
It will readily he seen that one of the above described upright racks may be
dispensed with by the employment of a supplementary lever in connection with the
remaining rack, however this arrangement would entail the necessity of said healds
occupying considerably more space laterally, which is an object generally wished to be
avoided, and again by the employment of the double racks as above described, by one
of these racks being weighted to counterbalance the other on which the weight of the
heald is placed, said heald is more easily operated.
Instead of making use of the pattern mechanism for the purpose of imparting
motion directly to the upright racks as above described, in which case said pattern
mechanisms have to be constructed of a very strong and substantial nature, I mount
two winged cams or segment wheels in suitable positions the same having motion
imparted them in an appropriate manner and direction so that by suitable hinged-
lever or other connections these cams or segments may be made to raise or depress
said upright racks as indicated by the pattern mechanism (which operates the con-
necting-lever or other part intervening said racks and said cams or segments)
whenever desired.
When the above described arrangement of racks and mechanisms are placed beneath
the healds I preferably form the upper outer ends of said racks of a suitably bifur-
cated form to receive the heald shaft, by which means same may very readily be
detached Again when said arrangements are employed each leaf, forming part of the
set of healds, is mounted in a common well known manner to operate in suitable
guides so that it may be pushed upwards as well as drawn downwards.
It will readily be understood how the above described mechanisms, by the employ-
ment of the well known lever and rod connections, may he placed above the healds,
in which case said healds may be of the most common and well known kind requiring
neither frames nor guides.
Relative to the shuttle-box operating mechanism my invention is applicable for the
class known as revolving or circular boxes, and consists of making use of a similar
arrangement of racks, pinion and pattern mechanisms to the one above described with
the exception that the pinion is mounted upon the outer end of the circular-box-shaft

page_text: and the racks are arranged to suit this position as also are the double arrangement
of pattern mechanisms for operating same.
Dated this 1st day of September 1888,
COMPLETE SPECIFICATION.
Improvements in Mechanisms for Operating Healds or Heddles and
Shuttle-boxes Used in Looms for Weaving.
I, JOHN PARK of Skipton in the County of York, Designer do hereby declare the
nature of this invention and in what manner the same is to be performed, to he
particularly described and ascertained in and by the following statement, that is
to say:
It relates to improvements in mechanisms for operating healds or heddles and
shuttle-boxes used in looms for weaving and consists of arranging and constructing
the parts forming said mechanisms, in such a manner that the efficiency thereof is
greatly enhanced.
Such being the nature and object of my said invention in order that same may be
more readily understood I have hereunto appended sheets of drawings illustrative
thereof, to which, by figures and letters, reference is made in the following
description.
Fig. 1 is front elevation illustrative of parts forming the heald-operating mechanism
Fig. 2 is end view of parts shown by fig. 1 as also of parts forming the box operating
mechanism.
Fig. 3 is front view of said box operating mechanism, and fig. 4 is a similar
view of another arrangement of same. In all the drawings the framework that is not
especially referred to, is omitted for the sake of clearness, with the exception of fig. 2
wherein A indicates the end frame of the loom.
C
Respecting the heald-operating mechanism, the object of my invention is attained
by mounting suitable rack and pinion mechanisms preferably beneath the healds, a
pinion a with its two racks 66 being used in connection with each leaf of said
healds c when these healds are used in connection with a narrow loom, but if they
are large or long enough for a broad loom, then another set of pinion and racks may
be used in connection therewith as shewn in broken lines fig. 1. The racks are
made to extend upwardly and have their outer ends somewhat of bifurcated form
when same are to be used beneath the healds e in order that said healds may be
rigidly held thereby for the purpose of being operated, and as this arrangement
allows the ready application or detachment of the healds c 1 preferably make use
of it.
The racks are employed for counterbalancing the racks 6 and healds c so that the
operations of same may be more easily effected.
The mechanism for imparting motion to the pinion a and racks & consists of the rack d
arranged to operate in connection with the pinion a as shown by fig. 1. This rack dis
operated by the winged cams or segment wheels e e¹ which are mounted upon the rotary
shaftsff respectively. These shafts being driven by any well known mechanism in oppo-
site directions as indicated by the arrows gg. Each of the winged cams e and e¹ consists
of the part e or el and an additional part e or e³ (see fig. 2.), the same being so formed
that the wing h h or might be attached thereto by one or another of its outer
ends entering a slot formed in said part e e¹ or e² e as shewn. In each of these slots
is mounted a spring k which is arranged so as always to tend to press the wing ỗ h
or houtwardly from the centre to the cam e or e¹, by which means when the outer
edges of the parts hh and h' ' come in contact with the under edges of the racks d
which are prevented by the framework or stay pieces from receding therefrom,
they are enabled to yield and so operate to advantage therewith as heroinafter
described.
:

page_text: The rods m m³, m" and m¹¹, which are hinged to the outer ends of the levers n n¹
respectively, are used for coupling the racks d by passing through slots formed therein,
to the operating parts h h, hh, said coupling as also disconnecting being effected by
means of the pattern surface or peg-lags o operating around the pattern cylinder p
in the well-known manner, and the springs r.
The operations of the foregoing parts are as follows;-when the lever n is raised
by the pattern mechanism the rod m is lifted clear of the part hh while the rod m¹ is
lowered into position for being operated by the part which part causes it to move
into the position shewn by fig. 1, and since the lower end of the rod m¹ operates, within
or enters a slot formed in the rack d as above described, the said rack d is brought
with it (said rod m³) into the position shewn and by the operations of the pinion a
and rack the heald c is pulled or brought into its lowest position; while when the
pattern surface does not operate on the lever n the spring k effects a reversion in the
movement of said lever n so that the rod m is placed into position for being operated
by the part which will move it into the position shown by fig. 1 at m" in this way
will the heald c be raised.
Attached to each of the racks d are the springs & or 8,111, which are so formed
as to lay hold of the locking barst when the said racks d are at the extremity of
their movements by which means the healds c are rigidly held up or down as the case
may be until these springs are operated by their respective rods 'm m¹ m" m, which
have small projecting pieces formed in suitable positions on them for this purpose,
and lifted clear of said bars t t as will be well understood.
By arranging the pattern mechanism so that it will cause the rods m m³ ml mlll
to project a greater or loss distance below the racks d the movements of the healds c
may be increased or diminished as may be desired since when said rods project
further through the racks they cover more of the path of motion of the
parts and in order that the desired length of stroke may be imparted to
these parts hhhh they are made moveable or yielding, as herein before described so
as to allow each of the racks d to be placed progressively nearer the centres of motion
of said cams eel as is its position relatively with the back part of the loom or in other
words the axes of the shafts ff" are at an angle to the somewhat horizontal plane in
which the racks d or the bottom outer ends of the rods m m¹ ml ml operate, so that
said racks that are nearer the back part of the loom are moved through a greater
space than those towards the front thereof with the result that the healds c are also
thus moved and a proper passage for the shuttle through the warp being operated by
those healds c, is produced.
Throughout the varied arrangements of mechanisms any of the well known means
or methods of supporting, staying or guiding the various motor parts may be made use
of as will be well understood.
By the employment of the well known lever and rod connections without departing
from the nature of this invention the mechanism hereinafter described may be arranged
to operate above the healds c in which case the bifurcated outer ends of the racks b
might be dispensed with, however I prefer the arrangement as herein described.
C
Relative to the shuttle-box operating mechanism my invention is applicable for the
class known as revolving or circular boxes, and consists of making use of a similar
arrangement of racks, pinion and pattern mechanisms to the one above described with
the exception that the pinion a' is mounted upon the circular box shaft and the
racks and with the pinion a² are arranged to suit this position, the said rack d³
assuming this suitable position by being so placed in the loom relatively with the
positions of the healds c and the pattern mechanism shewn by fig. 1, that its outer end
upon which the teeth are formed, is made to project outwardly from the part t¹
instead of from the part t as does the rack d (fig. 1) for operating the healds c.
The pinion a', rack and pinion a might be dispensed with by employing the
peg-wheel and mounting same upon the shaft wo, the flexible strap being employed
for coupling said wheel to, so that it may be operated by, the peg-and-crown
wheel y. The crown wheel portion of this peg-and-crown wheel y, being operated in
a manner common and well understood by the hookers 2 2¹ which take the place of

page_text: and are operated by the pattern mechanism in the same manner as is the rack d³.
Provided that the position of the pattern mechanism, relatively with that of the
shuttle-box w¹ was undesirable, by reason of the crown-wheel part y of the peg-and-
crown wheel y being required to be at a considerable distance from the peg-wheel
part as is shewn in broken lines fig. 2 (which also shews in broken lines that these
peg-and-crown parts forming the peg-and-crown wheel are joined together by being
mounted on a shaft) the said pattern mechanism may assume the position shewn at pl
fig. 2 in which case the peg-and-crown wheel y may be integral.
Again by arranging the pattern mechanism so that it will cause the projecting rods
to extend a greater distance through the racks d³, the circular box w¹ may be moved
a greater distance than the space of one shuttle-box provided that the hookers z z¹ are
so formed by having additional notches or hooks that they will meet the requirements
of the additional movement in the well known manner.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what 1
claim is:
1. The pinion a rack formed as shewn racks d and cams e, e', constructed as
set forth, rods m m², means for operating these rods springs, stop pieces & tand
stay pieces in combination, all of which are constructed and arranged to operate
substantially as herein specified.
2. The racks and d³, pinions a' and a² box w¹ having a shaft 10, rods mm² means
for controlling the movements of these rods, and the cams e e¹ in combination the
same being constructed and arranged to operate substantially as set forth.
3. The cams e, e', rods mm', means for operating these rods m m', the hookers z z¹
peg-and-crown wheel strap a peg wheel and box w having a shaft in com-
bination the same being constructed and arranged to operate substantially as set
forth.
Dated this 1st day of Juna 1880
JOHN PARK.
Per Samuel Hey, Agent.