BOOBS тот weaving Double Cloth and in Apparatus Connected therewith for Cutting Pile.
Year: 1885

page_text: BOOBS тот
weaving Double Cloth and in
Apparatus Connected therewith for Cutting Pile.
We, THOMAS HOLLINGS of 28 Temple Street, Weaver, and WILKINSON HALL of
72 Beamsley Street, Weaver, both of Manningham Bradford, in the County of
York, do hereby declare the nature of our said invention for "IMPROVEMENTS IN
LOOMS FOR WEAVING DOUBLE CLOTH AND IN APPARATUS CONNECTED THEREWITH
FOR CUTTING PILE to be as follows:-
"
Our invention relates to improvements in that class of looms in which two
fabrics are woven at the same time, and in which a knife is caused to pass from
side to side of the loom, whereby the pile between the two fabrics is divided.
To carry out our invention, we place the rack for actuating the gearing
connected with the pile knife, within the frames of the loom, and we drive such
rack by means of gearing which receives motion from the bottom shaft of the
loom, instead of from the top shaft as heretofore.
The rack works in a horizontal position and is actuated by a lever jointed to it,
which lever receives a rocking motion from a cam worked from the bottom shaft.
This rack communicates motion to a pinion which is fixed upon the same shaft as
a grooved wheel, and in the groove of this wheel is placed the cord which works
the pile cutting knife.
The pile cutting knife travels upon a slide and is caused to travel from side to
side of the loom, by the reciprocating motion, communicated by means of the cord,
from the grooved wheel herein before mentioned.
We use by preference a double edged knife, which cuts in both directions, and
which is maintained in a sharp condition by means of revolving emery rollers in
the usual manner.
We place an extra tappet upon the tappet shaft which tappet is worked in the
ordinary manner, and by means of which we are enabled to produce a perfect
selvedge upon both fabrics being woven.

page_text: Apparatus Connected therewith for Cutting Pile.
We THOMAS HOLLINGS, of 28 Temple Street, Weaver, and WILKINSON HALL, of
72 Beamsley Street, Weaver, both of Manningham, Bradford, in the county of
York 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 invention relates to improvements in that class of looms in which two
fabrics are woven at the same time, and in which a knife is caused to pass from side
to side of the loom, whereby the pile threads between the two fabrics are divided.
To carry out our invention we place the rack for actuating the gearing, connected
with the pile knife, within the frames of the loom, and we drive such rack by
means of gearing, which receives motion from the bottom shaft of the loom,
instead of from the top shaft, as heretofore. The rack works in a horizontal
position, and is actuated by a lever or rod jointed to it, which lever receives a
rocking motion from a cam worked from the bottom shaft. This rack communi-
cates motion to a pinion, which is fixed upon the same shaft, or actuates a shaft
upon which is fixed a grooved wheel, and in the groove of this wheel is placed the
cord which works the pile cutting knife.
The pile cutting knife travels upon a slide, and is caused to pass from side to
side of the loom by the reciprocating, motion communicated by means of the cord,
from the grooved wheel hereinbefore mentioned.
We use by preference a double edged knife, which cuts in both directions, and
which is maintained in a sharp condition by means of revolving emery rollers in
the usual manner.
We place an extra tappet upon the tappet shaft, which tappet is worked in the
ordinary manner, and by means of which we are enabled to produce a perfect
selvedge upon both fabrics being woven.
In order to enable our invention to be fully understood, we will proceed to
describe the same with reference to the accompanying drawing in which Figure 1
represents a side. elevation of a loom to which our said improvements are applied.
Figure 2 is a plan and figure 3 a side elevation of the same partly in section.
Figure 4 an elevation of the side opposite to that represented in figure 1. Figure 5
is an elevation on a larger scale of one of the knife sharpening rollers and figure 6
a sectional elevation of the same.
Similar letters refer to similar parts in all the figures of the drawing.
Upon the bottom shaft A, of the loom is fixed a pinion F, which is geared into
the toothed wheel G, which toothed wheel is fixed upon the same shaft as the cam
and tappet D and E, which cam and tappet give a horizontal reciprocating motion

page_text: to the rod B, which motion is communicated from the cam and tappet by means of
friction rollers working in a slot in the rod B. At one end of the rod B is the
rack H which rack actuates the pinion J and with it the intermediate toothed
wheel L, which is fixed upon the same shaft as the pinion J. The intermediate
wheel L communicates motion to the pinion K fixed upon the shaft M which shaft
carries the two grooved wheels N, in the grooves of which are placed the cords for
working the pile knife O, which is fixed by means of screws to a carriage connected
to the cords, and which carriage is caused to travel from side to side of the loom.
The cords are placed upon the grooved wheels in opposite directions at opposite
sides of the loom, in order to give the required reversing or reciprocating motion to
the pile knife O. The reciprocating motion of the rack H upon the end of the
rod B is communicated to the grooved wheels N and thereby causes the grooved
wheels to make part of a revolution in one direction and then to reverse and rotate
the same distance in the opposite direction; this motion is communicated to the
pile knife by means of cords which are actuated by the grooved wheels N.
The bottom fabric is drawn over and rests upon the piece-rail Q, and the pile
knife when dividing the pile threads passes from side to side of the loom at a
regulated distance above the piece rail. The top fabric passes to a taking off roller
mounted in bearings above the knife rail. The rod B works freely in a horizontal
position between two friction rollers R, one of which is placed above and the other
below the rod.
Upon the main shaft S is fixed a toothed wheel S¹, which actuates a second
toothed wheel T fixed upon the shaft, which carries a grooved wheel T¹; this
grooved wheel drives the cords Y, which actuate the sharpening rollers X.
The cords which drive these rollers are constantly maintained at the required
tension by means of the pulleys U over which the cords pass, and which pulleys
are mounted in bearings upon the movable arm V, which is supported at a
regulated tension by means of the spiral spring W.
The sharpening rollers X are mounted in bearings upon the upright standard Z,
which standard rises and falls either to bring up the rollers into position for
sharpening the pile knife after every alternate pick of the loom, or to bring down
the rollers out of the way of the knife after the sharpening has been accomplished.
The upright standard Z upon which the sharpening rollers are mounted, is fixed
upon the top of the vertical rod A¹, which passes through guides B¹, and is raised
or lower by means of the lever C, to one end of which lever the vertical rod A¹,
is jointed at C. The lever C works with a rocking motion upon a stud at D!,
fixed to the side frame of the loom and receives the required motion at the end of
every alternate pick from the cam E, which cam is fixed upon the same shaft as a
toothed wheel which is geared into and driven by a pinion fixed upon the bottom
shaft of the loon. The lever C when not raising or lowering the sharpening
rollers is brought back into its original position by means of the spring F¹.
The bodies of the rollers for sharpening the pile knife are formed recessed at
the sides and over the recess J', is stretched a hollow cylinder of sheet india
rubber H¹, dressed with emery powder.
The recess J¹, in the side of the sharpening roller allows the india rubber
covering H¹, to give way when it receives the pressure of the pile knife, and the
depression thereby formed in the elastic material adapts itself to the curved
surface of the knife O which is being sharpened, and operates only upon that
portion of the knife blade which requires grinding.
To prevent the sharpening rollers from being driven in a reverse direction and
being thereby cut or damaged, a ratchet wheel and ratchet are fixed upon the
shaft which drives the grooved wheel T¹, which ratchet wheel and ratchet will
cause the grooved wheel to revolve when the loom is working in the usual manner,
but if from any cause the loom is worked backwards, then the shaft will revolve
without causing the grooved wheel T¹ to revolve with it.

page_text: 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
The improved method of and apparatus for actuating the pile knife used in
severing the pile threads of fabrics woven in double looms, substantially in the
manner described and represented in the drawings.
Dated the 0th do. of Navamhan 100%