Apparatus for Armouring Insulated Electrical Conductors.
Year: 1890

page_text: Date of Application, 24th Dec., 1890-Accepted, 7th Mar., 1891
COMPLETE SPECIFICATION.
Apparatus for Armouring Insulated Electrical Conductors.
I, FREDERICK WALTON, of No. 4, Portugal Street, Lincoln's Inn Fields, in the
County of London, Manufacturer, 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 :-
My invention relates to apparatus whereby an electrical conducting wire or
group of wires, covered with insulating material, has formed upon it armour by
coiling helically on it a continuous strip of metal corrugated in such a manner
that the successive convolutions interlock with each other, thus forming a flexible
tube enclosing the insulated conductor or conductors. 1 shall describe the
apparatus which I employ referring to the accompanying drawings.
Fig. 1 is a side view, partly in section of the operative part of the apparatus.
Fig. 2 is a front view and Fig. 3 is a side view of the coiling chuck.
Fig. 4 is a section and Fig. 5 is a plan, (both these figures drawn to an enlarged
scale) shewing the holder for one of the pressing rollers.
Figs. 6 and 7 illustrate sections of armour.
A is a lathe head having bearings for a revolving tubular mandril B. On this
mandril is fixed a chuck or face plate C having at some distance in front of it a
recl D carried by three studs d, of which two are shewn in Fig. 2. On the
chuck C are also mounted guide rollers cc and two pairs of corrugating rollers E,
one of each pair having its bearings adjustable by a screw. Besides these
rollers E there are mounted on the chuck C three pressing rollers F each of
them held in a stem which can be adjusted in two directions, in distance radially
to or from the centre of the chuck by means of a nut fl and lock nut f, and in
obliquity to the axis of the chuck by means of a wrench lever G fitting on the
stem and adjustable by set screws g. The stem of each of the rollers F is
fitted in a block H which is bolted to the chuck/C. On the reel D is wound a
continuous length of metal strip S which is led by the guide rollers.cc somewhat
obliquely through between the corrugating rollers E and under one of the pressing
rollers F. The insulated conductor W is passed through between grooved
rollers K, through the tubular mandril B, its projecting conical nose and between
the pressing rollers F. The mandril being caused to revolve and with it the
chuck C and all the parts carried thereon, the strip S unwinds from the reel D,
becomes corrugated in passing between the rollers E and then by means of the
pressing rollers F it is helically coiled around the conductor W forming a flexible
tube which encloses it. The three rollers F, besides being adjusted each in respect
of radial distance from the axis and of inclination to it, are fixed-at-such-distances-
from the face of the chuck C as to suit the helical pitch of the strip S as it is
coiled on the conductor, and the convolutions of the strip being pressed forwards
by the action of the rollers F cause the conductor which they enclose to advance
with them. The form in which the strip is corrugated by the rollers E so as to
make the convolutions interlock with each other may be varied. Figs. 6 and. 7
illustrate two such forms.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I claim :-
For armouring on electrical
ganduston
ntal twin
اسانیم
محمسماك

page_text: interlocking convolutions, the mandril B, chuck C, reel D, corrugating rollers E
and pressing rollers F combined and operating substantially as described.
Dated this 2441 1er of Dreambar 1000
ABEL & IMRAY,
Agents for the Applicant.