Year: 1888

page_text: Date of Application, 2nd Feb., 1888.
Complete Specification Left, 31st Oct., 1888
Complete Specification Accepted, 7th Dec., 1888
We, WILLIAM ROBERTSON, and JAMES GUTHRIE ORCHAR, of Wallace Foundry,
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 relates principally to finishing machines for imparting the
mangle finish to woven fabrics by means of rollers driven alternately in opposite
directions, and one of our objects is to impart the necessary motions to the main
roller of the machine by improved apparatus to be substituted for toothed gearing
which, especially in large or heavy machines, has been found extremely liable to
injury from the concussion and shocks caused by the frequent and sudden reversals
of motion which take place. Our Invention also comprises an improvement in
applying pressure to the rollers.
In carrying out our Invention we fix a pulley or drum on the shaft or journal of
the main roller, and we impart the required reciprocating rotations or partial
rotations to this pulley or drum by means of one or more ropes, chains, or bands
which pass round suitably placed guide pulleys and are drawn alternately in opposite
directions by any suitable apparatus.
In one modification of such apparatus a cylinder arranged to be actuated by
compressed air or by steam or by water under pressure, is placed horizontally under
the pulley or drum, and its piston rod extends through stuffing boxes at both ends.
At each end of the cylinder there is a set of tackle pulleys by means of which the
piston rod acts on the ropes, chains, or bands, the tackle pulleys increasing the extent
of movement due to the piston so as to give the necessary, extent of movement to the
drum or pulley. Separate ropes, chains, or bands may proceed from the cylinder on
each side to the pulley or drum and may have their ends fixed thereto; or a single
rope, clain, or band may proceed from one end of the cylinder round a guide pulley
to the pulley or drum, then round or partly round the pulley or drum and next

page_text: .
round a guide pulley to the other end of the cylinder, the rope, chain, or band being
fixed to the pulley or drum at one point. Or a pitch chain may be used, such chain
engaging with sprocket teeth on the pulley or drum.
Two separate cylinders may be used instead of a single one, and the cylinder or
cylinders may be placed in any convenient position. Or the rope, chain, or band
may be worked by a small steain or hydraulic winch arranged to wind and unwind
the two ends alternately. In all cases, the cylinder or cylinders acting directly or
with tackle pulleys or the cylinder or cylinders of the winch are controlled by distribution
valves which can be manipulated so as to vary the length of stroke of the cylinder or
cylinders, and consequent extent of rotation imparted to the mangling rollers.
We apply pressure to the rollers by means of levers arranged as described in our
Patent Specification No. 8158 of 1884, or as described in our Provisional Specification
No. 17977 of 1887 but instead of combining an hydraulic cylinder with such levers
we use one or more cylinders worked with compressed air or steam.
1 :1-
17-
1
EDMUND HUNT,
Applicants' Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Mangling or Finishing Woven
Fabrics.
We, WILLIAM ROBERTSON, and JAMES GUTHRIE ORCHAR, of Wallace Foundry,
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 relates principally to finishing machines for imparting the
mangle finish to woven fabrics by means of rollers driven alternately in opposite
directions, and one of our objects is to impart the necessary motions to the
main roller of the machine by improved apparatus to be substituted for toothed
gearing which, especially in large or heavy machines, has been found extremely liable
to injury from the concussion and shocks caused by the frequent and sudden reversals
of motion which take place. Our Invention also comprises an improvement in
applying pressure to the rollers.
In carrying out our Invention we fix one or more pulleys or a drum on the shaft
or journal of the main roller, and we impart the required reciprocating rotations or
partial rotations to the pulley or pulleys or drum by means of one or more ropes,
chains, or bands, which pass round suitably placed guide pulleys and are drawn
alternately in opposite directions by any suitable apparatus.
One modification of our improved apparatus is shown upon an accompanying sheet
of explanatory drawings, figure, 1, being a plan of the driving details of a mangle
finishing machine, and figure, 2, a sectional elevation showing a part of one of the
gables or end frame standards of the machine.
In the modification delineated, two single-acting hydraulic cylinders, 3, 4, operating
in opposite directions are employed, these cylinders being placed below the shaft, 5,
of the main mangle, roller, 6, at one end of the machine, and being, for protection,
by preference enclosed in a box, 7, provided with a cover or covers, 8. The bottoni
of the box, 7, and its sides or some of them form part of the bed frame on which the
gable or end frame is fixed. In figure, 1, the shaft, 5, is delineated as with a part
broken out of it. The rams, 10, 11, of the hydraulic cylinders, 3, 4, have fitted to
cross heads on them sets, 12, 13, of tackle pulleys, and similar sets of tackle
pulleys, 14, 15, are fitted on stationary spindles at the back ends of the cylinders. In
the case of each hydraulic cylinder, 3, 4, a rope 16, 17, having one end secured to a
fixed point on the cylinder is passed, in a well known way, round the tackle pulleys, 12,
13, 14, 15. One rope, 16, is led from the tackle pulleys, 12, 13, in one direction
round or partly round a large pulley, 18, fixed on the roller shaft, 5, and has its end
fixed to that pulley; and the other rope, 17, is similarly, but in the opposite direction
led and fixed to another large pulley, 19, also fixed on the roller shaft, 5. Or the
ropes, 16, 17, may be led to a single broad pulley, or drum made with separate grooves
for each rope, and substituted for the two pulleys, 18, 19. The crossheads of the
rams, 10, 11, are made with palms, 20, 21, to rest and move on guides, 22, 23, cast

page_text: -
on the bottom of the box, 7. With the arrangement described it follows that as
the hydraulic rams, 10, 11, each move outwards and return inwards the ropes, 16, 17,
will act on the pulleys, 18, 19, on the roller shaft, 5, so as to turn that shaft alternately
in opposite directions.
The action, of the hydraulic cylinders, 3, 4, may be controlled by any suitable
arrangement of valves and valve gear. The arrangement shown in the drawings
comprises a simple four-way cock, 24, placed between and connected to the cylinders,
and having connected to it a pipe, 25, for the supply of water or other fluid under
pressure, and an exhaust pipe, 26. The cock, 24, is operated by means of a lever, 27,
connected by a rod, 28, to a lever, 29, fast on a tubular shaft, 30, turning on a stud
fixed to a bracket, 31, and having also fast on it a double lever, 32, connected to the
rams of two small hydraulic cylinders, 33. These cylinders, 33, by means of which
the main cock 24, is worked, are themselves controlled by a small four-way cock
the lever, 34, of which is connected by a link, 35, to a lever, 36, having on it a pin
or antifriction rollér, 37, arranged to be acted on by a cam slot in a sliding piece, 38.
This cam-slot piece, 38, is fixed to a horizontal bar, 39, arranged to slide endways
in guides and having fixed to it two adjustable stops, 40, which are acted on when
the hydraulic ram, 10, approaches each end of its stroke--so as to cause a movement
of the bar, 39, and through it and the valve mechanism the reversal of the main
cock, 24. The part which acts on the stops, 40, is an inclined rib on a boss, 41, on
a short spindle carried by the crosshead of the ram, 10, and geared by bevil wheels
to the spindle of a star wheel, 42, also carried by the ram crosshead. Whenever the
ram, moves to the right it carries the star wheel, 42, in contact with a catch
lever, 43, centered on a pin fixed in the side of the box, 7, the star wheel and catch
lever being shaped so as not to cause the turning of the starwheel when it is carried
to the left. The turning of the star wheel, 42, causes the ribbed boss, 41, to turn
step by step so that at each successive movement of the hydraulic rams their motion
is reversed at slightly different parts of their strokes; and the reversals of the
motion of the main mangle roller, 6, consequently take place at continually changing
positions. The precise changes thus made in the reversals depend on the shape
given to the rib of the boss, 41, and this shape may be varied to suit different
requirements.
The cylinders, 3, 4, are shown as suitable for being worked by water or other
liquid under pressure, but compressed air or steam may be employed, the cylinders
and accessory details being suitably modified.
One double-acting cylinder may be substituted for the two single-acting cylinders,
such double-acting cylinder having a piston rod extending through stuffing boxes at
both ends. Tackle pulleys are employed to increase the extent of movement due to
the piston; and separate ropes, chains, or bands may proceed from the cylinder at
each end to the pulley or pulleys or drum on the roller shaft and may have their
ends fixed thereto; or a single rope, chain, or band may proceed from one end of the
cylinder round a guide pulley to the pulley or drum on the roller shaft, then round
or partly round the pulley or drum and next round a guide pulley to the other end
of the cylinder, the rope, chain, or band being fixed to the pulley or drum at one point.
Or a pitch chain may be used, such chain engaging with sprocket teeth on the pulley
or drum.
The cylinder or cylinders employed may be placed horizontally as shown or in
any other convenient position. Or the rope, chain, or band may be worked by a
small steam or hydraulic winch arranged to wind and unwind the two ends
alternately. In all cases the cylinder or cylinders acting directly or through tackle
pulleys, or the cylinder or cylinders of the winch are controlled by: distribution
valves which can be manipulated so as to vary the length of stroke of the cylinder or
cylinders and consequent extent of rotation imparted to the mangling rollers.
We apply pressure to the rollers by means of levers arranged as described in our
Patent Specification No. 8158 of 1884, or as described in our Patent Specification
No. 17977 of 1887, but instead of combining an hydraulic cylinder with such levers
we sometimes use one or more cylinders worked with compressed air or steam.

page_text: 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-Constructing and combining the driving parts of machines for mangling or
finishing woven fabrics in the improved manner substantially as hereinbefore
described and as shown in the accompanying drawings.
2-Communicating motion to the rollers of mangling or finishing machines by
means of ropes, chains, or bands, arranged and actuated substantially as hereinbefore
described.
3-Applying pressure to the rollers of a mangling or finishing machine by means
of levers acted on by one or more cylinders worked by comprassed air or steam
substantially as hereinbefore described."
EDMUND HUNT,
Applicants Agent.