Improvements in Cloth Tentering Machines.
Year: 1899

page_text: Date of Application, 16th Mar., 1899-Accepted, 20th May, 1899
COMPLETE SPECIFICATION.
Improvements in Cloth Tentering Machines.
We, JAMES ANDERSON, of 62, Simpson Street, Tong Road, Leeds, in the
County of York, Engineer, and CHARLES ROBINSON, of 74, Simpson Street,
Leeds aforesaid, Cloth Finisher, 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 relates to improvements in cloth tentering machines, and
has for object the substitution of more durable and economical apparatus in place
of the expensive circular brushes which are at present employed in attaching
textile material to the tentering pins of such machines.
For this purpose there is substituted for the ordinary circular brush, a seg-
mental brush or equivalent device, such as a spiral spring, carried by a holder
turning on a stud fixed to a vertically movable slide, which, by its descent
causes the brush to oscillate in the same direction as the tentering chain, and
to apply to the tentering pins the material upon which it operates, the ascent
of the said slide lifting the brush from the pins and material and at the same
timo causing it to oscillate in a contrary direction and resume its former position
ready to repeat the entire operation on the next descent of the slide. The stud
on which the brush holder oscillates is preferably fixed to a vertically adjustable
portion of the aforesaid slide, thus avoiding the necessity for using different
brushes to operate on textile fabrics of various thicknesses.
Any suitable means may be employed to impart a reciprocating motion to the
aforesaid slide; it is preferred however to use an arrangement such as herein-
after described, in which the downward motion of the slide is produced by
means of cams, arranged on the periphery of a wheel that is mounted on a shaft
driven from the main driving shaft of the machine by means of belt or spur
gear, the upward motion of the slide being produced by means of coiled springs
which maintain a runner on the upper portion of the slide in contact with the
periphery of the cam wheel.
Rotary motion may be transmitted from the main driving shaft to the cam-
wheel shaft through a suitable belt and pulley, or spur gearing, so
arranged that the cam shaft can be quickly disengaged and the operation of the
A metallic spiral spring
brushing apparatus thus arrested, when desired.
encased in a suitable holder may be in some cases substituted for the aforesaid
segmental brush; the holder being so constructed that the pins can enter and
leave the same without coming in contact with the ends thereof.
In order that our invention may be more clearly understood, we will now
proceed to describe the same by the aid of the accompanying illustrative draw-
ings, in which :-
Figs. 1 and 2 are elevations at right angles to one another, showing one con-
struction of apparatus according to this invention, the front cover plate of the
apparatus being removed in Fig. 1.
In the body of the apparatus are formed parallel guides 2, and 2 in which
reciprocates a slide 3 furnished on its upper end 4 with lugs 5 that carry a stud
on which revolves a runner 7. This runner receives vertical downward move-

page_text: ment from cams 8 on a wheel 9 secured to a driving shaft 10 which is mounted
in a bearing 11 and is rotated by means of a pulley 12 which receives motion
from another pulley on the main driving shaft of the machine through a belt
not shown.
The pulley 12 may conveniently be mounted on a sleeve 13 secured to the
driving shaft 10 by a set screw 14, the sleeve being furnished with a conical
part 15 on which the reverse cone 16 formed in the boss 17 of the wheel 12 is
forced by means of a nut 18 on the screw threaded part 19 of the sleeve 13. By
this means the pulley 12 can be quickly secured to the sleeve 13 or released
therefrom at will. The shaft 10 may however, if desired, be driven by toothed
gearing the toothed wheel on the shaft being adapted to be engaged and disen-
gaged therefrom, through a suitable clutch. The slide 3 is kept up to the cams S
by means of spiral springs 20 and 20, the lower ends 21 of the two springs
bearing against the fixed parts 22 and 22 of the body 1 and their upper ends 23
acting against the undersides 24 and 24 of the projections 25 on the slide 8,
the whole being kept in position by a removable cap or cover plate 26. Through
the slide is preferably formed a rectangular orifice or guide 27 in which is
inserted an adjustable slide block 28, which is securely held in any desired
position on the slide 3 by a set screw 29 which works, through a boss 30 on the
slide, the cap 26 having an orifice 31 provided in it for the boss to pass through.
The lower end of the adjustable block 28 is furnished with lugs 32 which
support a stud 33 on which oscillates a brush holder or carrier 34 formed with
jaws 35 and 35 between which a segmental brush 36 is secured by a set
screw 37.
On a stud 38 fixed to the standard 11* in a convenient position below the
parallel guides 2 and 2 is mounted a bell crank lever 39-40. One arm 40 of this
lever is formed with a parallel slot 41 into which takes a stud 42, secured on a
boss 43 on the lower end of the slide 3. The other arm 39 of the bell crank
lever, which may be of any convenient length, governs the return of the brush
holder 34 to its original position by means of a runner 45 which is mounted on
a stud 46 secured in or to the brush holder 34 and against which the lever arm 39
acts.
Fig. 3 shows in front elevation and Fig. 4 in part end elevation, a modified
arrangement wherein there is used in lieu of a brush, a coiled spring 374
arranged within a hollow segmental holder 34 of circular section and the lower
part 47 of which is open. The spiral spring 37 is securely held endwise in its
holder by a fixed end 50 and movable cap 51 the latter being held in place by a
screw 52, the ends 50 and cap 51 having formed in them V-shaped openings 53
for the pins of the tentering chain to travel through.
The operation of the apparatus is such that as the shaft 10 revolves and each
cam in turn on the cam wheel 9 comes in contact with the runner 7 on the upper
end of the movable slide 3, the latter is thereby moved downward and causes
the brush 37 (or coiled spring 374) to place the material on the pins of the ten-
tering chain; the brush (or coiled spring) with its holder, at the same time
turning on its stud 33 and travelling for a short distance with the material and
tentering pins. As each cam leaves the runner 7, the upward movement of the
slide is effected by means of the two springs 20 and 20%, the stud 42 on the
lower end of the slide operating the bell crank lever in such a manner as to
cause its arm 39 to act against the runner 45 on the brush or spring holder, and
release the brush or spring from the pins and material and move it back again
into the starting position ready for the next movement.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1. In a cloth tentering machine, a segmental device such as a brush or spiral 5
spring mounted in an oscillating holder and operated by a reciprocating slide

page_text: substantially as herein before described with reference to the drawings annexed
for the purpose specified.
2. Apparatus of the kind referred to in the preceding claim wherein the oscil-
lating holder carrying the segmental brush or spring is carried by a block
capable of being adjusted on the reciprocating slide, substantially as described.
8. For placing textile material on the pins of a cloth tentering machine, appa-
ratus constructed arranged and operating substantially as herein before described
with reference to and shown in Figs. I and 2 and in Figs. 3 and 4 of the
drawings annexed.
11
1
1 1000.
R. E. P. CRAVEN,
Chartered Patent Agent,
King Street Chambers, 52, Wellington Street, Leeds,
Agent for the Applicants.