Improvements in or relating to Lappet Motions of Looms for Weaving.
Year: 1895

page_text: Date of Application, 2nd Oct., 1895
Complete Specification Left, 31st July, 1896-Accepted, 26th Sept., 1896
PROVISIONAL SPECIFICATION.
Improvements in or relating to Lappet Motions of Looms for
Weaving.
I, JAMES WILDING, of Alexandra Mill, Preston, in the County of Lancaster,
Cotton Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention of improvements in or relating to looms for weaving has reference
to apparatus known as a lappet motion by means of which the fabric being woven
is figured or ornamented by the "stitching-in" of certain extraneous warp threads
or ends carried through the eyes of vertical needles which are lifted into the main
warp in the varying positions required to produce the desired pattern or effect.
According to this my said invention the needles are carried on a needle case
capable of sliding vertically and also laterally in the usual way. The required up
and down movement of the needle case is effected by lifting-plates having the usual
horizontal slots within which is a pin or projection fast upon the side of the
needle case but in addition to the said horizontal slots I provide one or more
vertical slots pointing downwardly from either or both ends of each of the hori
zontal slots. Thus when the pin or projection is over either of the vertical slots
the needle case is inoperative during the upward and downward movement of the
lifting plate which takes place at each pick. The said vertical movement is
preferably effected by means of a rocking shaft carried at each end upon the slay
swords (and therefore moving to and fro therewith) and caused to be rotated first
in one direction and then in the other by means of horizontally disposed belts or
straps wound in opposite directions on a boss or pulley on the rocking shaft the
other ends of the straps being fastened to the stationary framing at the front and
back of the loom. Each of the two lifting-plates is connected to the rocking shaft
through the medium of a rod or har attached at its lower end to the depending
extremity of a belt wound upon a boss or pulley fastened to the rocking shaft.
The requisite sidewise movement of the needle case is effected by means of a
vertically disposed centrally pivoted swing lever whose upper end is pivotally and
adjustably connected to a slotted arm projecting downwardly from the needle case
the other or lower end of the swing lever-by the pull of a spring-being caused
to press against the serrated or pattern-formed edge of a circular flange projecting
from the side of a ratchet wheel to which intermittent rotary movement is imparted
by means of a pawl mounted upon a lever jointed to the end framing of the loom.
Around the periphery of the circular flange is preferably arranged a spring brake
strap to prevent the over-running of the ratchet wheel. I also preferably provide-
by means of a cam on the crank shaft of the loom which imparts motion to a pivoted
lever and a cord passing under a pulley-means whereby the swing lever may be
withdrawn from contact with the serrated or pattern edge of the circular flange
during that part of the pick when contact therewith is not required.
Dated this 2nd day of October 1895.

page_text: Improvements in or relating to Lappet Motions of Looms for
Weaving.
I, JAMES WILDING, of Alexandra Mill, Preston, in the County of Lancaster,
Cotton 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 of improvements in or relating to looms for weaving has reference
to apparatus known as a lappet motion by means of which the fabric being woven
is figured or ornamented by the "stitching-in" of certain extraneous warp threads
or ends carried through the eyes of vertical needles which are lifted into the main
warp in the varying positions required to produce the desired pattern or effect.
According to this my said invention the needles are carried on a needle case
capable of sliding vertically and also laterally in the usual way. The required up
and down movement of the needle case is effected by lifting plates having the usual
horizontal slots within which is a pin or projection fast upon the side of the needle
case but in addition to the said horizontal slots I provide one or more vertical slots
pointing downwardly from either or both ends of each of the horizontal slots.
Thus when the pin or projection is over either of the vertical slots the needle case
is inoperative during the upward and downward movement of the lifting plate
which takes place at each pick. The said vertical movement is preferably effected
by means of a rocking shaft carried at each end upon the slay swords (and therefore
moving to and fro therewith) and caused to be rotated first in one direction and
then in the other by means of horizontally disposed belts or straps wound in
opposite directions on a boss or pulley on the rocking shaft the other ends of the
straps being fastened to the stationary framing at the front and back of the loom.
Each of the two lifting-plates is connected to the rocking shaft through the medium
of a rod or bar attached at its lower end to the depending extremity of a belt
wound upon a boss or pulley fastened to the rocking shaft.
The requisite sidewise movement of the needle case is effected by means of a
vertically disposed centrally pivoted swing lever whose upper end is pivotally and
adjustably connected to a slotted arm projecting downwardly from the needle case
the other or lower end of the swing lever-by the pull of a spring-being caused
to press against the serrated or pattern-formed edge of a circular flange projecting
from the side of a ratchet wheel to which intermittent rotary movement is impartel
by means of a pawl mounted upon a lever jointed to the end framing of the loom.
Around the periphery of the circular flange is preferably arranged a spring brake
strap to prevent the over-running of the ratchet wheel.
In the accompanying drawings Fig. 1 is a front view of the improved lappet
motion hereinabove described.
1, 1 are the needles carried on the needle case 2 mounted in the usual way so as
to be capable of moving vertically and horizontally. 3 is one of the lifting plates-
a second similar lifting-plate being arranged near the other end of the needle case
-and 4 the usual horizontal slot within which works or slides a pin 5 fast to the
needle case 2. 6, 6, are the additional vertical slots. When the pin 5 is brought
over one of the vertical slots 6 (as shown at Figs. 1 and 3 of the drawings) the
lifting-plate 3 will be out of gear with the needle case 2 which will therefore as
regards vertical movement be inoperative. 7 is the rocking shaft which is partially
rotated first in one direction and then in the other by means of the horizontally
disposed belts or straps 8, 8, (see also Fig. 2) carried on the pulley or boss 9 and
fastened to the stationary back and front framing of the loom. The lifting-plate 3
is carried on the upper end of the rod or bar 10 whose lower end is attached to the
depending extremity of a belt 11 wound upon a boss or pulley 12. 13 is the

page_text: vertically disposed swing lever fulcrummed at 14 and 15 the slotted arm projecting
downwardly from the needle case 2 the lower end of the swing lever 13 by means
of a spring 16 pressing against the pattern-formed edge of the "pattern wheel" 17
carried on the side of a ratchet wheel 18 and rotating on a fixed stud 19 projecting
from the slay sword 20. The ratchet wheel receives the required amount of rotary
movement at each pick or beat of the slay sword 20 from the pawl 21 pivoted on a
stud 22 fast to the stationary end framing of the loom. 23 is the spring brake for
preventing over-running of the pattern wheel 17. 24, 24, are the vertical pins
commonly used in lappet motions and constituting what is known as a
"false
reed."
At Fig. 3 is shewn an arrangement of the above described apparatus which
actuates from the same pattern wheel two needle cases so as to produce two
corresponding patterns but reversely to each other. The lifting-plate 3 stands
between the two needle cases 2 2* the front needle case 2 having a pin working
in the left band part of the lifting plate and the back needle case 2ª having a pin 5ª
working in the right hand part of the lifting plate. The back needle case 2ª has a
depending slotted arm 15" to which is jointed (so as to slide up and down)' at 25 the
lower end of a bent arm 26 fast at 27 to the lower part of the swing lever 13.
Thus when the front needle case 2 is moved horizontally to the left the back
needle case 2ª will be simultaneously moved to the right and vice versa.
An alternative method of employing the apparatus in a double form consists in
providing separate pattern wheel mechanism at each end of the loom each pattern
wheel having its own lifting-plate and needle case and working independently of the
other. By this means two lappet patterns entirely different from each other may
be produced alternately side by side.
The improved lappet motion apparatus as above described is readily accessible
for adjustment and alterations and adapted for the production of many varied
figures and combinations of lappet patterns. In the production of certain kinds of
figures it affords by means of the vertical slots in the lifting-plates-a ready and
reliable method of putting the needle case out of gear and so rendering it inoperative
and causing the desired temporary cessation of the lappet pattern.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In lappet motions of looms for weaving the use or employment of a lifting-
plate having in addition to the ordinary horizontal slot one or more vertical slots
by means of which the lifting plate may become disengaged or out of gear with the
needle case substantially as described and shewn in the drawings.
2. The combination of parts constituting the improved lappet motion con-
structed arranged and operating substantially as described and shewn in the
drawings.
Dated this 21st day of July 1896
Dated this 21st day of July 1896
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.