Improvements in Means for Producing Imitation Lappet Weaving in Looms.
Year: 1899

page_text: Date of Application, 24th-Apr., 1899
Complete Specification Left, 24th Jan., 1900-Accepted, 10th Mar., 1900
PROVISIONAL SPECIFICATION.
Improvements in Means for Producing Imitation Lappet Weaving
in Looms.
I, JAMES WILDING, of the Firm of Wilding Brothers, Limited, Alexandra Mill,
Preston, Lancashire, Cotton Manufacturer, do hereby declare the nature of this inven-
tion to be as follows:-
The improvements relate to means for accomplishing in the loom what is known
as imitation lappet weaving, and have for object to enable this to be done in a
simple and effective manner, and as hereinafter described.
In carrying out my invention I provide a suitably formed reed in combination with
a comb capable of lateral movement for the guidance of the special warp threads for
producing the lappet effect, as heretofore; but, in addition, I make such comb
capable of following the motion of the slay carrying the reed, in order to keep the
comb constantly in close proximity to such reed.
To effect this, and when the lappet threads are arranged to be upon the upper side
of the fabric, I prefer to mount the comb either in front of or behind the reed and
upon the slay cap, with the teeth of such comb projecting downwards and their ends
opposite a part of the reed through the dents of which the ordinary warps pass. The
comb bar may have slots therein to enable it to slide laterally upon pins or studs on
the slay cap, and may be actuated by a cord passing over pulleys also mounted on
the slay cap. This cord may pass round and be attached to a drum or attached to a
lever mounted upon and moving with a shaft capable of turning in bearings on the
slay swords, and the shaft may be in connection with a treadle actuated by a tappet
upon the ordinary tappet shaft of the loom, by which means the comb can be moved
laterally to the right at one pick of the loom and to the left at the next pick, and so
on. Or the lateral motion may be obtained with the use of a dobby or jacquard as
will be readily understood.
The reed used is one adapted for the purpose of keeping the special warps apart
from the ordinary warps without interfering with their joint action, and may be
formed of groups of short dents for the ordinary warps, enclosed by long dents for
the special warps, the two being separated by a bridge of wire forming part of the
reed; or otherwise.
;
I am well aware that a comb capable of lateral movement in combination with a
specially formed reed has already been used, but my improvements consist in
providing such a comb always in close proximity to the reed, and capable of both
lateral and to and fro motion with the motion of the slay, whereby such comb is able
to make a lateral movement for each pick of the loom, when desired.
The comb-bar may be attached to a supplementary slay instead of to the ordinary
slay of the loom, or may otherwise be actuated to give the comb its to and fro
motion coincident with the forward and backward movement of the slay carrying the
reed, and other variations in detail may be made without departing from the peculiar
character of the invention.
1 1000
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.

page_text: Improvements in Means for Producing Imitation Lappet Weaving
in Looms.
I, JAMES WILDING, of the Firm of Wilding Brothers, Limited, Alexandra Mill, Preston,
Lancashire, 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 :-
The improvements relate to ineans for accomplishing in the loom what is known as
imitation lappet weaving, and have for object to enable this to be done in a simple
and effective manner, and as hereinafter described.
In carrying out my invention I provide a suitably formed reed in combination with
a comb capable of lateral movement for the guidance of the special warp threads for
producing the lappet effect, as heretofore; but, in addition, I make such comb capable
of following the motion of the slay carrying the reed, in order to keep the comb
constantly in close proximity to such reed.
To effect this, and when the lappet threads are arranged to be upon the upper side
of the fabric, I prefer to mount the comb either in front of or behind the reed and
upon the slay cap, with the teeth of such comb projecting downwards and their
ends opposite a part of the reed through the dents of which the ordinary warps
pass. The comb bar may have slots therein to enable it to slide laterally upon
pins or studs on the slay cap, and may be actuated by a cord passing over pulleys
also mounted on the slay cap. This cord may pass round and be attached to a
drum, or attached to a lever, mounted upon and moving with a shaft capable of
turning in bearings on the slay swords, and the shaft may be in connection with
a treadle actuated by a tappet upon the ordinary tappet shaft of the loom, by which
means the comb can be moved laterally to the right at one pick of the loom and
to the left at the next pick, and so on. Or the lateral motion may be obtained with
the use of a dobby or jacquard as will be readily understood. The reed used is one
adapted for the purpose of keeping the special warps apart from the ordinary warps
without interfering with their joint action, and may be formed of groups of short
dents for the ordinary warps, enclosed by long dents for the special warps, the two
being separated by a bridge of wire forming part of the reed; or otherwise.
I am well aware that a comb capable of lateral or transverse movement in combina-
tion with a specially formed reed has already been used, but my improvements
consist in providing such a comb always in close proximity to or at a constant distance
from the reed, and capable of both lateral and to and fro motion with the motion of
the slay, whereby such comb is able to make a lateral movement for each pick of the
loom, when desired, and, in addition, the relative positions, in a plane parallel to the
reed, of the ends of the comb and the top of the reed, may be constant during
the operation of weaving.
But that the improvements may be better understood I will, with the aid
of the accompanying drawings, proceed more fully to describe means employed
by me.
DESCRIPTION OF DRAWINGS.
Fig. 1 represents a back view in elevation of the slay cap and slay swords of a
loom with one form of my improvements applied thereto, and Fig. 2 represents a side
elevation thereof, partly in section, but in which the slay swords are omitted.
a¹ are the slay swords carrying the slay cap a. b is the comb bar mounted behind
the reed r and upon the slay cap, with the teeth 61 of the comb projecting down-
wards with their ends low enough to be opposite a part 1 of the reed through the

page_text: dents of which the ordinary warps pass. The comb-bar is provided with slots b² to
enable it to slide laterally upon pins or studs 2 on the slay cap, and it is arranged to
be actuated by cords c passing over pulleys cl also mounted on the slay cap a. The
cords are shown connected to straps 2 passing round and connected at their other
extremities to drums or pulleys d which are attached to or form part of a shaft ď
capable of turning in bearings d in the slay swords a¹. The straps c² pass round the
drums in opposite directions.
The shaft d¹ is shown attached to a lever g which is connected by link g¹ to a
treadle pivotted at h¹ on some stationary part of the loom. The treadle h may be
operated in the ordinary way through a bowl 2 in contact with a tappet k on the
tappet shaft k².
The reed used is one adapted for the purpose of keeping the special warps apart
from the ordinary warps without interfering with their joint action, and is shown
formed of groups of short dents r¹ for the ordinary warps, enclosed by long dents r²
for the special or lappet warps, the two being separated by a bridge of wire forming
part of the reed. The lappet warps also pass between the teeth b¹ of the comb, and
it will be seen that by reason of the constant proximity of these teeth 61 to the reed,
the ends of such teeth are always below the tops of the reeds r¹, and thus each lappet
warp thread is effectually prevented from passing from between one pair of teeth to
another pair during the weaving operation.
The comb-bar may be attached to a supplementary slay instead of to the ordinary
slay of the loom, or may otherwise be actuated to give the comb its to and fro motion
coincident with the forward and backward movement of the slay carrying the reed,
and other variations in detail may be made without departing from the peculiar
character of the invention.
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 I claim
is :-
In looms for accomplishing what is known as imitation lappet weaving, a comb
which is capable of a to and fro motion coincident with the movement of the slay of
the loom in addition to a lateral movement of such comb, for the purpose and in
manner substantially as herein set forth.
Dated this 23rd day of January 1900.
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.