Improvements Appertaining to Heald Operating Mechanism for Looms.
Year: 1897

page_text: Date of Application, 10th Feb., 1897
Complete Specification Left, 10th Nov., 1897-Accepted, 18th Dec., 1897
PROVISIONAL SPECIFICATION.
Improvements Appertaining to Heald Operating Mechanism for
Looms.
I, AMOS LOCKWOOD of 38, Willow Bank, King Cross Halifax in the County of
York, Machine Maker, do hereby declare the nature of this invention to be as
follows:-
That is to say It relates to the application of means whereby the controlment of
the pattern surface over the movements of the heald operating levers in machines
known as "Loom dobbies" is greatly extended; or in other words said means enable
the production of woven designs of considerable magnitude by the employment of
comparatively few pattern cards or lags.
In carrying my invention into effect I mount the pattern barrel or cylinder on the
dobby so that it may be rotated in both directions and in either direction be brought
into effective operation with the parts for putting the headle-lifting levers into
action.
I further arrange a supplementary pattern cylinder so that the pattern surface on
the primary cylinder may transmit motion thereto as and when it is desired or
prepared so to do, by these means I am enabled to use a portion of the pattern
surface on the primary cylinder for effecting the working of the healds for a certain
length of time or design and at its completion by each pattern surface on the primary
cylinder having transmitted motion to the supplementary cylinder the pattern
surface on this latter may be prepared to cause a reversal in the direction of motion
of the former and so said controlment will be repeated but in the reverse order.
However instead of repeating the design by the same parts of the pattern surface
being brought to bear on the dobbies operating levers in both directions alike I
preferably arrange the primary cylinder so that it may have a slight lateral motion
(or one in the direction of its axis) by which means and by bringing such lateral actions
into effect during the effecting of the reversal above described I am enabled to
produce one design on the said pattern surface when it is moving in one direction,
and another when it is moving in the other direction, while further by the supple-
mentary cylinder I can continue the motion in either direction to any desired extent
thus one part may be often repeated while another is only seldom produced as the
design of fabric necessitates.
The intermittent rotary motion of the primary cylinder is produced by two
ratchets operating on opposite sides of their ratchet wheel, so that when one is in
contact therewith the outer is out of position for operating same, and these ratchets
are pivotted on bearings so that by lever and rod connections they may be put into
and out of operation by the pattern surface on the supplementary cylinder.
The pattern surface of the primary cylinder is prepared so that when one portion
of the design thereon is completed, it puts a lever in the dobby into action and
thereby causes the supplementary cylinder to be moved through the space of one lag
or card and at such time, should a reversal be about to be carried out (provided the
device for moving the cylinder laterally as above described, is used) other parts by
suitable levers and rods are brought into use to cause the primary cylinder's

page_text: operating ratchets to be entirely clear of saine thus no intermittent rotary motion is
at this time transmitted thereto so that the pattern surface in the opposite direction
begins on the same lag as that being used in the other direction hence the preparing
of such pattern surface is considerable simplified while its magnitude is kept within
the least possible number of lags.
COMPLETE SPECIFICATION.
Improvements appertaining to Heald Operating Mechanism for
Looms.
I, AMOS LOCKWOOD of 38, Willow Bank, King Cross, Halifax in the County of
York, Machine Maker, 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 :-
That is to say It relates to the application of means whereby the controlment of
the pattern surface over the movements of the heald operating levers in machines
known as "loom dobbies" is greatly extended: or in other words said means enable
the production of woven designs of considerable magnitude by the employment of
comparatively few pattern cards or lags.
In order that my said invention may be more readily understood I have hereunto
appended a sheet of drawings illustrative thereof to which by figures and letters
reference is made in the following description.
Fig. 1 is front elevation of a dobby or heddle operating mechanism with my
improved parts applied thereto.
Fig. 2 is a view of parts shown by fig. 1 as seen in the direction indicated by the
arrow x.
Fig. 3 is a drawing in detail showing certain of the parts in relative positions
hereinafter explained.
A indicates the framework of the dobby upon which my improved parts are
mounted, while the parts for transmitting motion to said dobby from the motor parts
of the loom are omitted, since they are or may be of any of the well known class
used for this purpose.
In carrying my invention into effect I mount the parallel barrel or cylinder a on
the dobby so that it may be rotated in both directions and in either direction
be brought into effective operation with the parts for putting the heddle lifting
levers b into action.
I further arrange a supplementary pattern cylinder c so that the pattern surface
on the cylinder a may transmit motion thereto by parts hereinafter explained as and
when it is desired or prepared so to do, by these means I am enabled to use a portion
of the pattern surface on the cylinder a for effecting the working of the healds
through the levers 6 for a certain length of time or design and at its completion by
such pattern surface on the said cylinder a having transmitted motion to the
cylinder c the pattern surface d of which may be prepared to cause a reversal (by
operating parts hereinafter described) in the direction of motion of the former (a)
and so said controlment will be repeated but in the reverse order. However
instead of repeating the production of the design being woven by the same parts of
the pattern surface a being brought to bear on the dobbies levers b in both
directions alike I preferably arrange the cylinder a so that it may have a slight lateral

page_text: motion (or one in the direction of its axis) the devices for effecting this being
hereinafter explained, by which means and by bringing such lateral actions into
effect during the effecting of the reversal above described I am enabled to produce
one design on the said pattern surface on the cylinder a when it is moving in one
direction and another when it is moving in the other and opposite direction, while
further by the supplementary cylinder c I can continue the motion in either
direction to any desired extent thus one part may be often repeated while another is
only seldom produced as the design of fabric necessitates.
The cylinder a is mounted on levers e and caused to oscillate in the well known
manner in order to act upon the operating parts in the dobby. The intermittent
rotary motion of this cylinder a is produced by a double ratchet f pivotted upon the
fixed stud f1 so that its claw 2 may cause the cylinder to rotate in the direction
indicated by the arrow fig. 1 through the ratchet wheel g while its claw 3 causes said
cylinder to rotate in the opposite direction by means of the other teeth gl on said
wheel, which has a flange to separate them, since these latter teeth point in the
opposite direction to the former.
When the claw 2 is in contact with its wheel g as shown by fig. 1 the other
claw 3 is out of position for operating its wheel g¹, and these positions are secured by
the spring h, coupling the arm f2 of the ratchet f, to the lever h¹ which through
its antifriction bowl h² is caused to descend by the cam k into the position shown
by fig. 1, while on said cam k being rotated said bowl h² is kept in contact with
it by means of its counterbalancing weight h³, thus the ratchet f will be moved to
enable its claw 3 to descend into its working position whenever desired.
The cam k is secured to the ratchet wheel k¹ which is operated by the ratchet k²
mounted on the lever ³ pivotted at k and moved by the dobby lever b through its
rod 6 as and whenever indicated upon so to do by the primary cylinder a, and this
ratchet 2 is further acted upon by the pattern surface d on the cylinder ċ to the
end that when a peg d¹ comes into contact with said ratchet 2 it is moved to be
clear of the wheel at which time no movement will be transmitted to the cam k,
consequently the claw 2 or the claw 3 (as the case might be) which was transmitting
motion to the cylinder a at this time, is allowed to continue its said actions so that
the design being produced is continued without change from one part to the other as
herein before stated.
The intermittent rotary motion of the cylinder c is also derived from the lever ³
by means of the ratchet m¹, which is mounted upon it, operating the catch wheel c¹
secured to said cylinder c thus the movements of the cylinder c are brought about
in accordance with the pattern surface on the cylinder a.
The actions of the above parts are as follows The pattern surface on cylinder a
is prepared so that when one portion of the design thereon is completed, it puts
one of the levers 6 into action and thereby causes the cylinder c to rotate through
the space
of one lag and at such time should a reversal be about to be carried out
(provided the device for moving the cylinder a laterally as above referred to, used)
the hooked connecting rod n (which is at such time overhanging a pin n¹ projecting
from the lever m) is caused by the rising movement of the said lever m (which is
operated by another of the dobbie's levers 6 through the medium of the connecting
rod 62) to lift the notched lever o, pivotted at o¹, so that the pin o2 secured on the
arm f of the ratchet f is made to follow the notch therein which by its actions
brings the ratchet f into the position shown by fig. 3 (the spring hat this time
yielding to allow this action to take place) in which its claws 2 and 3 are both clear
of their wheels g g¹ thus at this time no intermittent rotary motion is imparted to
the cylinder a so that the pattern surface for the motion in the opposite direction on
said cylinder a begins on the same lag as that being used in the other direction
hence the preparing of such pattern surface is considerably simplified while its
magnitude is kept within the least possible number of said lags. When the ratchet k²
is placed out of gear by the peg d' the projection m² on said ratchet forces the hooked
rod n clear of the pin n¹ so that even should the leverm be raised no motion is transmitted
to the lever o thus there is no reversal of the cylinder a at such times, and this is

page_text: most desirable because it enables the use of the last peg lag of the series for the
finishing indication on the one, series and the beginning indication for the other
series of lags carrying the two parts of the design.
To transmit lateral motion to the cylinder a the lever p pivotted at p1 has an
incline formed at its outer end p² to act upon the projection q fixed to the lever e
(fig. 2) so that when the said lever p is in the position shown by figs. 1 and 2 said
lever e and its cylinder a are forced in the direction indicated by the arrow 4 against
the resilience of the spring r and when placed in this position one series of holes or
pegs in the peg-lags are in position for performing their effective operations while,
when said lever p has its inclined part moved downward to be clear of the
projection q when the spring r is allowed to force it back again in which position the
other series of holes or pegs in the peg-lags are brought into action, and these
movements of the lever p are derived from the lever h' by means of the rod & so that
these movements are always kept in concert with those of the ratchet f since they
are derived from the same source.
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 mechanism of the class described, a primary cylinder, a supplementary
cylinder and means whereby the pattern surface on the one may control the
movements of the other, the same being constructed and arranged in combination
substantially as herein specified.
2. In mechanism of the class described, a primary pattern cylinder, means for
transmitting intermittent rotary and lateral movements thereto, a supplementary
pattern cylinder and means whereby the pattern surface on this latter may control
the several movements of the former, said parts being constructed and arranged in
combination substantially as herein set forth.
3. In dobby mechanism primary and supplementary pattern surfaces arranged
to act in concert with each other substantially as herein set forth and described.
4. The improved pattern surface mechanisins constructed and arranged to operate
substantially as herein specified.
Dated this 9th. day of November 1897