Improvements in Machines for Mangling or Finishing Woven Fabrics.
Year: 1895

page_text: Date of Application, 18th Nov., 1895
Complete Specification Left, 12th Aug., 1896-Accepted, 10th Oct., 1896
PROVISIONAL SPECIFICATION.
Improvements in Machines for Mangling or Finishing Woven
Fabrics.
We, JAMES GORDON, and ROBERT ALLAN, of 2, India Buildings, Dundee, in
the County of Forfar, North Britain, Engineers, do hereby declare the nature of
this invention to be as follows, that is to say:-
Our said invention has for its object to lessen the time occupied in changing the
cloth beams or rollers in mangling or like machines, and to reapply pressure after
a change more expeditiously than is done in existing machines having hydraulio
pressure apparatus. We also apply means to impart elasticity to the action of the
hydraulic pressure whereby the effect is rendered more uniform.
In a machine to which our invention is applicable, there are as usual two circular
beam plates mounted at the inner sides of the two housings or frame gables of the
machine, for carrying the cloth beams or rollers, these plates being as usual
provided with bearing recesses for three beams. When the machine is operating
a pair of locking plates fitted to slide vertically at the upper parts of the inner
sides of the housings, fit in the recesses in the beam plates and hold the plates so as
to keep the beam which is being operated upon firmly in position. Each locking
plate is movable by a lever centered upon the bearing block of the upper mangling
roller; and each lever is acted on by a crosshead lying across the top of the
bearing block and jointed to the upper ends of vertical tension rods by which the
pressure applied by means of an hydraulic cylinder below the bottom of the housing
is transmitted to the bearing block of the top roller. The crossheads at the tops of
the tension rods act between the centres of the upper levers and the locking plates
so that the plates are moved further and more quickly than the crossheads, when
the pressure is taken off and the tension rods are raised as hereinafter explained.
The beam plates are consequently speedily released and can be expeditiously
turned for changing the beam with cloth just operated on for a beam with fresh
cloth. A small cross bar is fixed to each top bearing block the lever for acting on
the locking plate passing under it; and the bearing blocks with the top roller are
raised by the levers on these reaching the cross bars.
The two tension rods at each housing or frame gable are at their lower ends fixed
to an hydraulic cylinder which is movable upon a ram fixed to the base of the
housing; and to the underside of this cylinder there is fixed a ram working in a
lower smaller hydraulic cylinder which is stationary being suitably fixed to the
housing. The lower hydraulic cylinders are used for raising the top roller with its
bearing blocks and the levers acting on the locking plates; and it is worked by
means of a special accumulator which is preferably of a size just sufficient for the
purpose and is loaded with suitable weights provision being made for varying the
weights if found desirable. The accumulator is charged by pumps so as to be
ready to act quickly when changes of the cloth beam or roller take place and when
applying downward pressure to the upper ruller. A helical spring is applied on
the accumulator ram and between it and the load of weights, so as to impart
elasticity to the action and moderate strains due to inertia of the parts; and the
weights are arranged so that only a portion of them sufficient for raising the top
roller are operative for that purpose.
Dated this Sixteenth day of November 1895.
EDMUND HUNT,
Applicants' Agent.

page_text: Improvements in Machines for Mangling or Finishing Woven
Fabrics.
We, JAMES GORDON, and ROBERT ALLAN, of 2 India Buildings, Dundee, in
the County of Forfar, North Britain, Engineers, 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: -
Our said invention has for its object to lessen the time occupied in changing the
cloth beams or rollers in mangling or like machines, and to reapply pressure after
a change more expeditiously than is done in existing machines having hydraulic
pressure apparatus. We also apply means to impart elasticity to the action of the
hydraulic pressure whereby the effect is rendered more uniform.
Machinery as made according to our invention is shown on two accompanying
sheets of explanatory drawings
Figure, 1, on Sheet, 1, thereof being a longitudinal vertical section of part of
our improved machinery.
Figure, 2, is a transverse vertical section of part of the improved machinery.
Figures, 3, and 4, on Sheet, 2, are sectional elevations, as at right angles to each
cther of a special accumulator forming part of our improved machinery. Figure, 5,
is a horizontal section of. the same;
Figure, 6,,is a vertical section of a detail.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated.
In a machine to which part of our invention is applicable, and such as is shown
in Figures, 1, and 2, of the drawings, there are as usual two circular beam plates, A,
(one only being shown) mounted at the inner sides of the two housings or frame.
gables, B,f the machine, for carrying the cloth beams or rollers, C, these plates
being as usual provided with bearing recesses for three beams. When the machine
is operating a pair of locking plates, D, (one only being shown) fitted to slide
vertically in guides at the upper parts of the inner sides of the housings, B, fit in
the recesses in the beam plates, A, aud hold the plates so as to keep the beam (C)
which is being operated upon firmly in position. Each locking plate, D; is movable
by a lever, G, centered upon the bearing block, H, of the upper mangling roller, J
at its outer side, and projecting inwards through a slot in the plate. Each lever, G,
is acted upon by a crosshead or round bar, K, fitting in a notch in the lever, and
lying across the top of the bearing block; H, and jointed to the upper ends of
vertical tension rode, K 1; by which the pressure applied by means of an hydraulie
cylinder, K.2, below the bottom of the housing B, is transmitted to the bearing
block of the top roller, J. The crossheads, K, at the tops of the tension rods, KI,
act between the centres of the upper levers, G, and the locking plates, D, so that
the plates are moved further and more quickly than the crossheads when the
pressure is taken off, and the tension rods are raised, The bean plates; A,, are
consequently speedily released and can be expeditiously turned for changing the
beam (C) with cloth just operated on for a beam with fresh cloth. A small cross
bar, H 1, is fixed to each top bearing block, H, the lever, G, for acting on the
locking plate, D, passing under it; and the bearing blocks, H, with the top roller, J,
are raised by the levers, G.,on these reaching the cross bars; HI,
The two tension rods, K 1, at each housing or frame gable, B; are at their lower
ends fixed to the hydraulic cylinder, K.2,, which is movable upon a ram,, K. 34 fixed
to the base of the housing; and to the underside of this cylinder, K2, there is fixed
a ram, I, working in a lower smaller hydraulic cylinder, L 1, which is stationary,
being fixed by rods, L 2, to the housing. The lower bydraulic cylinders, Lt, are

page_text: used for raising the top roller, J, with its bearing blocks, H, and the levers, G,
acting on the locking plates, D; and it is worked by means of a special accumulator
(shown on Sheet, 2) which is preferably of a size just sufficient for the purpose, and
is loaded with suitable weights, provision being made for varying the weights if
found desirable.
The accumulator is charged' by pumps (not shown) so as to be ready to act
quickly when changes of the cloth beam or roller, C, take place, and when
applying downward pressure to the upper roller, J. The ram, M, which is made
of a length and cross-sectional area to displace water sufficient to fill both
cylinders, L1, is near its top made with a shoulder, M1, on which sits a helical
spring, M 2, encircling the ram. A cylindrical cover, N, encircling the ram, M,
and spring, M 2, is made with an inwardly-projecting shoulder at its upper part
by means of which it rests on the spring, and with an outwardly-projecting
shoulder, N 1, at its lower part on which are carried weights, N 2, just sufficient
to overcome the weight of the roller, J, and its connections.. The introduction of
the helical spring, M2, between the ram, M, and the load of weights, N 2, imparts
elasticity to the action and moderates strains due to inertia of the parts. The
descent of the ram, M, raises the roller, J, and its connections to the required
height quickly without using the charging pumps as has been the custom hitherto;
and as the lifting action is accomplished with a smaller movement of the cylinder, K 2,
and consequently less displacement of water thau has hitherto been usual the
pressure can be raised more expeditiously again.
Additional weights, Q, are provided to give adequate pressure for mangling and
are arranged to be operative for that purpose only. To effect this object a
bridge, R, slides vertically within limits in guide slots, R1, formed in the
accumulator columns, R 2, and rests except when supported by the bottoms of the
guide slots, on a conical projection, N 3, on the cover, N. The bridge, R, has an
arm, R 3, projecting normally from the middle of each side, and through each arm
there passes a vertical rod, Q1, by which the additional weights, Q, are suspended
from the bridge. Each rod, Q1, is encircled at its upper part by a sleeve, Q2,
which is held between collars on the rod and has one side formed with rack teeth, Q3,
and the other side with ratchet teeth, Q4. The rack teeth, Q 3, are engaged by
pinions, S, on a horizontal shaft, Si, carried in bearings on the bridge, R, and
worked by a bandwheel, S.2. The ratchet teeth, Q4, are engaged by pawls, T,
on a horizontal shaft, T 1, carried in bearings on the bridge, R, and turned by a
hand lever T2. It is by these pawls, T, that the rods, Q1, carrying the weights, Q,
are upheld. The number of weights, Q, suspended may be varied. For this
purpose the rods, Q1, are formed with T-heads, Q5, and are passed through
openings in the weights, Q, and the weights rest on the T-heads of the rods.
When it is desired to add or drop one or more weights, Q, the rods, Q1, are quarter
turned by means of levers, Q6, (one being fitted with a spring lock-fast catch, Q7)
on them connected by a link, Q8, and worked by a handle, Q9. After being
quarter turned the rods, Q1, are lowered or raised through the openings in the
weights, Q, to be added or dropped by means of the racks, 3, and pinions, S, and
are afterwards quarter turned to their original positions so that their heads may
take hold of the lowermost weight on which the others rest. The bridge, R, is as
shown in the drawings in its lowermost position resting on the bottom of the guide
slots, R1, consequently on the further descent of the ram, M, the additional
weiglite, Q, which are suspended from the bridge are not operative for the purpose
of raising the roller, J, and its connections.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
:-
1. The construction, arrangement, and combination of parts constituting the
improved machinery for mangling or finishing woven fabrics, substantially as
herein before described and as shown in the accompanying drawings.

page_text: 2. In machinery for mangling or finishing woven fabrics, locking plates movable
in guides in the housings in connection with the beam plates by crossheads connected
to rods operated by hydraulic apparatus substantially as and for the purposes
hereinbefore described with reference to Figures 1, and 2, of the accompanying
drawings.
3. In machinery for mangling or finishing woven fabrics the combination and
-arrangement of parts constituting the improved hydraulic accumulator apparatus
substantially as herein before described with reference to Figures, 3, 4, 5, and 6, of
the accompanying drawings.
4. Applying to hydraulic accumulator apparatus, used in connection with
machinery for mangling or finishing woven fabrics, a spring between the accumulator
ram and the load of weights in a manner to impart elasticity to the action of the
apparatus substantially as herein before described and as shown in Figure, 4, of the
accompanying drawings..
Dated this Eleventh day of August 1896
EDMUND HUNT,
Applicants' Agent.