Improvements in or connected with Machines for Coiling Wire on Flexible Hose and for Making Spiral Springs.
Year: 1891

page_text: Date of Application, 18th Mar., 1891
Complete Specification Left, 18th Dec., 1891-Accepted, 30th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Machines for Coiling Wire on
Flexible Hose and for Making Spiral Springs.
I, CHARLES THOMAS CROWDEN, of 12 Ennersdale Road, Lewisham, Kent,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to certain novel details of construction and in the arrange-
ment of parts of machinery for forcing wire through spiral dies in order that the
wire can be fed to, be curled upon, and be made to encircle flexible hose in
spiral formation, the pitch of which spirals can be increased or decreased at
will, or be adjusted to suit the external diameter of hose to be so armoured
by wire.
For the purpose of my invention, I employ the type of Sphincter Grip Flexible
Hose Armouring Machine, patented by F. M. Hale on the 21st June 1889,
No. 10151.
Instead of taking the coil of wire direct from the drum, as there described,
I take it from a separate reel, and after wrapping it once or twice only on
said drum, I lead it over a guide pulley, and from thence into and between the
feed rolls.
My second improvement has reference to a re-arrangement of the gear by which
the feed of the wire is effected. The feed rollers are driven from the countershaft
by means of a compound gear, which consists of a train of wheels from the first
motion shaft to a wheel and sleeve loose on the hollow mandrel which gears into a
wheel connected to the shaft of the feed rollers. The face plate is also driven from the
first motion shaft by a train of gear to a wheel, which is fixed to the hollow mandrel.
These wheels if in the same proportion both for driving the mandrel and feed
rollers in one or more revolutions of the face plate would not cause the feed rollers
to revolve, consequently no wire would be fed into the die and all would revolve at
the same speed but if the pinion of the wheel on the first motion shaft be reduced
one tooth, the rollers will feed a certain amount of wire into the die and so by
reducing the number of teeth in the first motion wheel driving the roller gear, or
increasing the number of teeth in the first motion wheel driving the mandrel, it will
at once be seen that a great variation can be made in the amount of wire to be
forced into the die to suit the diameter and pitch of the wire armour required to be
gripped on to the hose.
By this arrangement of gear the wire is fed into the die when the face plate
revolves in one direction only, the first motion wheel driving the feed rollers must
be smaller than the first motion wheel driving the mandrel or else the rollers
would revolve in a contrary direction to the face plate and the wire would not be
fed into the die.
The third improvement relates to a differential gear for changing the relative
speed of parts of the machine. For this purpose, I loosely mount a bevil wheel in
or between the spokes of a driving or belt pulley on the countershaft, said bevil
wheel being at right angles to the periphery of the pulley and in gear with two
other bevil wheels mounted also loosely on the same shaft as the pulley itself.
These latter bevil wheels are in a piece with, or are affixed to spur pinions which
are in gear respectively with the roller gear and with the mandrel gear. One or
both of said bevil wheels is provided with a break appliance by which its wheel
can be retarded in speed when desired, or be entirely stopped, the other bevil
wheel and pulley continuing to work but at an increased speed. The breaked wheel
by the gearing of the teeth with the first bevil wheel permits said wheel to travel
round without imparting rotative motion to it, or its speed can, by the break, be

page_text: so adjusted as to vary it in relation to the speed of the free wheel, and so the speeds
of the rollers are governed in proportion to that of the mandrel, or the reverse of
it, as desired.
Dated this 18th day of March 1801
H. GARDNER,
Per R. Core Gardner,
Patent Agent, 166, Fleet Street, London,
Agent for the said Charles Thomas Crowden.
H. GARDNER,
Per R. Core Gardner,
Patent Agent, 166, Fleet Street, London,
Agent for the said Charles Thomas Crowden.
COMPLETE SPECIFICATION.
Improvements in or connected with Machines for Coiling Wire on
Flexible Hose and for Making Spiral Springs.
I, CHARLES THOMAS CROWDEN, of 12 Ennersdale Road, Lewisham, Kent,
Engineer, 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 certain novel details of construction and in the
arrangement of parts of machinery for forcing wire through spiral dies in order
that the wire can be fed to, be curled upon, and be made to encircle flexible
hose in spiral formation, the pitch of which spirals can be increased or decreased
at will, or be adjusted to suit the external diameter of hose to be so armoured
by wire.
For the purpose of my invention I employ the type of Sphincter Grip Flexible
Hose Armouring Machine, patented by F. M. Hale on the 21st June 1889,
No. 10151.
Instead of taking the coil of wire direct from the drum as there described
I take it from a separate reel and after wrapping it once or twice only on
said drum A as indicated at Figures 1, 2 and 3 of the annexed drawings, I
lead it over a guide pulley B and from thence into and between the feed
rolls C, C.
My second improvement which is also shown in the same figures has reference
to a rearrangement of the gear by which the feed of the wire is effected. The
feed rollers C, C, are driven from the countershaft D by means of a compound
gear E, F, which consists of a train of wheels from the first motion shaft to a
wheel G and sleeve H loose on the hollow mandrel I which gears into a wheel J
connected to the shaft K of the feed rollers C, C, the face plate L is also driven
from the first motion shaft D by a train of gear M, N, to a wheel P which is fixed
to the hollow mandrel I; these wheels, if in the same proportion both for driving
the mandrel and feed rollers in one or more revolutions of the face plate would
not cause the feed rollers C, C to revolve, consequently no wire would be fed into
the die and all would revolve at the same speed, but if the pinion F of the
wheel E on the first motion shaft D be reduced one tooth, the rollers C, C, will
feed a certain amount of wire with the die, and so by reducing the number of
teeth in the first motion wheel driving the roller gear, or increasing the number
of teeth in the first motion wheel M driving the mandrel I it will at once be
understood that a great variation can be made in the amount of wire to be forced
into the die to suit the diameter and pitch of the wire armour required to be
gripped on to the hose.
By this arrangement of gear, the wire is fed into the die when the face plate L
revolves in one direction only, the first motion wheel E driving the feed rollers
must be smaller than the first motion wheel M driving the mandrel I or else the
rollers C, C, would revolve in a contrary direction to the face plate L and wire
would not be fed into the die.
The third improvement relates to a differential gear for changing the relative speed
of parts of the machine. For this purpose and as shown at Figure 4 of the annexed

page_text: drawings I loosely mount a bevil wheel Q in or between the spokes of a driving or
belt pulley R on the countershaft D said bevil wheel being at right angles to the
periphery of the pulley and in gear with two other bevil wheels S, T, mounted on
the same shaft as the pulley itself. These latter bevil wheels are in a piece with
or are affixed to spur pinions U, V, which are in gear with the roller gear and
with the mandrel gear. One (or both) of said bevil wheels is provided with a
break appliance W by which its wheel T can be retarded in speed when desired,
or be entirely stopped, the other bevil wheel Q and wheel S and consequently the
pinion U continuing to work but at an increased speed. The break wheel T by
the gearing of the teeth with the first bevil wheel Q permits said wheel to travel
round without imparting rotative motion to it, or its speed can by the break, be
so adjusted as to vary it in relation to the speed of the free wheel, and so the speeds
of the rollers are governed in proportion to that of the mandrel or the reverse of it,
as desired.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The employment of a revolving drum A. between the reel of wire and a guide
roller for a wrapping of the wire thereon prior to being fed to the forcing rolls as
and for the purpose described.
2. The arrangement of double gear for operating the forcing rolls and the mandrel
respectively also the means by which variation of speeds of the forcing rolls and the
mandrel can be obtained as set forth.
3. The arrangement of the differential speed gear on the countershaft for
operating the forcing rolls and the mandrel respectively as described with reference
to Figure 4 when employed for flexible hose armouring purposes.
1001
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said C. T. Crowden.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said C. T. Crowden.