Improvements in Machinery or Apparatus for Armouring India Rubber and other Flexible Hose Tubes and the like.
Year: 1891

page_text: Date of Application, 2nd July, 1891-Accepted, 8th Aug., 1891
COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for Armouring India
Rubber and other Flexible Hose Tubes and the like.
I, JOHN COCKBURN Superintendent to the North British Rubber Company,
Limited, Mechanical Department, Castle Mills, Edinburgh, do hereby declare
the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to machinery or apparatus for armouring with wire india
rubber and other flexible hose tubes and the like and it has for its object to provide
an improved machine by which instead of spirally coiling on the hose one strand of
wire only a number or plurality of strands may be simultaneously coiled, hose or
tubing so armoured being protected from elongation or end pressure which has not
hitherto been effectually the case with any process of armouring with wire and
moreover when armoured by the improved apparatus the hose is much better
protected against bursting or crushing.
The improved armouring apparatus constructed in accordance with my invention
is illustrated in partial front elevation at Figure 1, in vertical section on the line
- at Figure 2 and in detail of certain of the parts at Figures 3 and 4 of the
annexed drawings.
As shewn by these figures the mechanism consists of a standard A. in which is
rigidly carried a frame B having a turned part or neck whereon a bevel wheel C
is placed loosely. The bevel wheel has keyed upon its hub or boss a worm
wheel D driven by a worm screw E, secured or formed on a shaft F which is rotated
by a belt passed round a pulley G or by other convenient means.
The bevel wheel C, is geared with a number of bevel pinions H each keyed
upon a shaft I carried in blocks J bolted or otherwise secured to the inclined outer
part of the frame B. In the example illustrated the wheel C, is shewn as
geared with six several pinions H but the number may be increased or diminished
as desired.
On the lower end of each spindle a cylinder or roller Jis keyed the said
cylinders or rollers having each a circumferential groove a rounded at the bottom
made about the middle of its length and on the spindles I there are also keyed spur
pinions K which are geared with corresponding pinions L keyed on spindles M laid
parallel to the spindles I and also carried by the blocks J. On the lower ends of
the spindles M cylinders or rollers N similar to the rollers J are keyed the
armouring strands of wire b (and which are carried on any suitable bobbins or reels
separate from the machine) being passed between the grooves a in each pair of
cylinders or rollers and by the drawing action caused by the rotation of these
rollers in the direction of the arrows Figure 1 fed down through the tubes O to the
die P. The cylinders or rollers J' N are pressed circumferentially together and
made to grip the wires by hand wheels and screws which latter act against
adjustable bushes d carrying the ends of the spindles I or M as seen
particularly at Figure 3. The tubular guides O which are bolted or otherwise
secured to the under inclined face of the frame B may each be made in one piece in
which case a channel is drilled through its entire length or it may be made in two
pieces longitudinally bolted or butted together with a semicircular groove in each
more

page_text: of the meeting faces. The inner end of each guide O butts against or is contiguous
to the forward end of the die P which latter passes centrally through the neck of
the stationary frame B and is secured to it and at its said front end through which
the hose or tube to be armoured enters the die is for a length inwards chased with
a series of grooves or threads d¹ corresponding in number to the number of sets of
feeding rollers J' N employed in the machine each tube O communicating with a
distinct and separate thread. As the hose or tube feeds or is fed or drawn forward
through the disc P the pushing action of the rollers JN, forcing the wires
forward into the grooves of the die causes the hose or tube to rotate the several
strands of wire being laid and gripped on to the tube as indicated at Figure 2 and
the said action aids the advance of the tube which is otherwise effected by hand, or
the advance supplementary to the rotative and forward feeding action of the wire
may be effected as seen at Figure 4 by floating the unarmoured part of the tube in
a trough of water placed at the entering end of the machine the tube in that case
being plugged or stopped at both ends.
Although the bore through the neck of the frame B is constant dies having
different diameters of bore to fit various diameters of tube or hose to be armoured
may be substituted one for another and each machine may have a series of such dies
and adjunctive apparatus operating at the same or different times to armour at one
and the same or at different operations hose or tubes of the same or of different
diameters and to suit variations in the thicknesses of armouring wire employed the
feeding rollers JN and tubes O are removable and may be substituted by others
having the required diameter of grooves or channels.
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 I am
aware of the Specification of Letters Patent No. 17796 of 1887 granted to
Lewis Roberts George Clinton Scofield and Joseph Allen Coultaus and I make
no claim to the invention described and claimed therein but what I do claim is :-
1. For the armouring of flexible hose tubes and the like with a series of strands
of wire the machine combined and arranged substantially as hereinbefore described
with reference to the accompanying drawings.
2. In a machine for the purpose set forth the combination of a stationary frame
supported on a pillar or standard and carrying a series of adjustable wire feeding
cylinders or rollers arranged in pairs a guide leading from each pair of rollers a die
through which the tube to be armoured passes said die being chased with a series
of separate spiral grooves and means for rotating the said feeding rollers sub-
stantially as described with reference to the drawings annexed.
3. In a machine for the purpose set forth the combination of a stationary
frame supported on a pillar or standard and carrying a series of adjustable wire
feeding cylinders or rollers arranged in pairs, a guide leading from each pair of
rollers to a die through which the tube to be armoured passes said die being
chased with a series of separate spiral grooves, means for rotating the said feeding
rollers and a trough in which the tube or part thereof to be armoured is floated in
front of the feeding end of the apparatus, substantially as described with reference
to the appended drawings.
4. As an adjunct to or in combination with machines for the purpose set forth a
water trough at the feeding end of the machine in which the tube to be armoured
is floated and rotated and from which it feeds to the armouring die substantially as
and for the purpose described with reference to the annexed drawings.
A
31
IM
CL 1001
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.