Improvements in the Construction of Machinery for Making Flexible Metallic Covering for Belts, Bracelets, Straps, Dog and other Collars, and Harness Ornaments.
Year: 1889

page_text: Date of Application, 25th Jan., 1889
Complete Specification Left, 25th Nov., 1889-Accepted, 4th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Machinery for Making Flexible
Metallic Covering for Belts, Bracelets, Straps, Dog and other
Collars, and Harness Ornaments.
FRANK ERNEST PLUMB, Engineer, Glenera House. Hyde Park Terrace, Leeds, do
hereby declare the nature of this invention to be as follows:
This invention has for its object to provide improved machinery for making
Flexible Metallic Covering for Belts, Bracelets Straps Dog and other Collars and
Harness Ornaments.
In carrying the said Invention into practice I employ on the continuous metal strip
or composition used in the manufacture of Belts &c. :-flat or circular dies driven by
a gut band or gearing from an auxiliary shaft the required amount of corrugation
made by the dies on the continuous metal strip or composition being regulated and
gauged by a spring and screw.
On making the required corrugation similar to S shape the continuous metal strip
or composition is then wound spirally on a moveable or sliding mandril the outer
edge of one channel of the S shape or corrugated strip or composition being laid in
the other channel.
To perform this operation with great accuracy and to guide, finish & close the
continuous band of metal or composition being wound spirally on the moveable or
sliding mandril employ three or more revolving circular dies with suitable
arranged grooves to guide finish and close the metal strip as before mentioned.
These three or more revolving finishing dies are held in guides and motion given
to them by a cord or gearing worked from an auxiliary shaft. The necessary
adjustment required of the dies being regulated by screws and graduated indicator
plates, these plates showing the true and exact position of the finishing dies when in
motion and at work.
The moveable or sliding mandril is worked by hand or steam power in the usual way
as employed in ordinary lathes and the motion given to the auxiliary shaft is trans-
mitted by band or gearing from the moveable or sliding mandril.
The continuous metal strip or composition being wound spirally on mandril in the
form of corrugation similar to a S the outer edge of one channel is laid in the other
channel of these iwo channels facing in opposite directions one channel has its convex
side towards the exterior of mandril and the other has its concave side towards the
exterior of metal covering.
On the continuous metal strip or composition being made in a circular or spiral
form on mandril as described it is then removed and afterwards compressed in dies
by screw air water or steam presses into any shape or form that may be required for
Flexible Metallic Covering for Belts Bracelets Straps Dog and other Collars and
Harness Ornaments.
Dated this 25th day of January 1889.
FRANK ERNEST PLUMB.
COMPLETE SPECIFICATION.
Improvements in the Construction of Machinery for Making Flexible
Metallic Covering for Belts, Bracelets, Straps, Dog and other
Collars and Harness Ornaments.
I, FRANK ERNEST PLUMB, of Glenera House, Hyde Park Terrace, Leeds, in the
County of York. Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
This invention has for its object to provide improved Machinery for Making

page_text: Flexible Metallic Covering for Belts, Bracelets. Straps, Dog and other Collars and
Harness Ornaments.
For this purpose I construct machinery as hereinafter described capable of pro-
ducing from a continuous metal or composition strip spirally wound tubular casing
to be subsequently flattened by means of suitable dies employed with a screw or
hydraulic press so as to produce a more or less flattened ornamental covering for such
articles as belts bracelets dog and other collars and harness ornaments.
In the accompanying drawings Figure is a side elevation of the complete
machine Figure 2 is an end elevation and Figure 3 is a plan of the same.
Figures 4, 7, 8, 9 and 10 are enlarged detail views of parts of the machine. Figure 5
is a plan of Figure 9, and Figure 6 is a plan of Figure 10. In all the figures like
letters of reference indicate the same parts. Upon the framework of the machine A
mount a standard B carrying a reel C having wound thereon the metal or com-
position strip from which the spirally wound tubular casing is to be formed. This
metal or composition strip is passed through a guide D, enlarged views of which are
represented by Figures 10 and 6, having a small wheel a the position of which is
regulated by the screw b so as to turn up more or less of one edge of the metal or
composition strip according to the diameter of the spirally wound tubular casing to be
produced. Having passed through this guide D the metal or composition strip with
one edge partly turned up enters between a pair of molletts or dies E F mounted
in a frame so as to be capable of being brought into rolling contact by means of the
screw operated by the hand wheel G. The molletts or dies E F are removable, a
suitable size with suitably shaped grooves therein being employed to receive the
metal or composition strip with its one edge partly turned up and to further shape it
to approximate the final shape (somewhat S shape in cross section as shown by the
enlarged detail view at Figures 7 and 9) for spirally winding in a manner to inter-
lock the edges of the metal or composition strip and so form the spirally wound
tubular casing. The lower mollett or die F is driven by means of the grooved cone
pulley H driven from the grooved cone pulley J at a speed dependent upon the
diameter of the spirally wound tubular casing to be formed.
Instead of providing this movement by means of a band or cord engaging the
two grooved cone pulleys Hand J the required proportionate speed may be attained
by tooth gearing employing change wheels in the usual manner adopted for screw
cutting lathes.
Having passed through between the mollets or dies E F the metal or composition
strip thus shaped approximately to the final shape required is carried between another
pair of dies (omitted to be represented in Figures 1, 2, and 3. to simplify the
drawings but marked c d in the detail view Figure 4) a set screw e being provided
for regulating the position of the die d to obtain the final shape required for the
metal or composition strip before subjecting it to the spiral winding operation
hereinafter described.
To provide for the spiral winding operation employ a mandret fitted in a
rotating hollow mandrel K having a longitudinal slot through which a screw g
projects being screwed laterally into the mandrel f. By this means a collar h, fitted
loosely over the rotating hollow mandrel K and having a cavity formed therein and
an opening for admitting and removing the screw g. serves to draw back the
mandrel by means of the windlass L when, by the operation of forming the spirally
wound tubular casing thereon, it has been extended outward to the limit of its length.
At the same time the rotation of the hollow mandrel K is communicated to the
mandrel by means of the screw g acting as a carrier. The front end of the
mandrel is formed with a cut or slot to seize the metal or composition strip and
so commence the spiral winding operation. As the metal or composition strip is
thus wound upon the mandrel f its spiral direction, its interlocking and finally its
closing. is performed by means of three regulating dies M. N. P. each being regulated
to its proper position and inclined to the required angle according to the diameter
and consequently according to the pitch required for the spirally wound tubular
casing to be produced. The means of regulation are provided for by the hand

page_text: wheels Q. R. S with their respective screws controlling the slides constructed in the
same manner as ordinary slide rests for lathes and carrying the dies M. N. P. secured
at the desired inclination by the set bolts 1 m.
The dies M. N. P are removable being made of a suitable size and with suitable
grooves for varying sizes of spirally wound tubular casing to be produced. A view
of the general outline is shown in the enlarged detail view at Figure 7.
The hollow mandrel K together with the mandrel ƒ are rotated by means of the fly
wheel T either by hand, by means of the handle p, or from any convenient source
of motive power; one straight and one crossed band and respectively being then
employed to produce motion as required in either direction.
The rotation of the dies M. N. P. may be assisted by means of a friction wheel s
shown in Figure 8 one such friction wheel being connected with each of the
dies M. N. P and arranged as shown to rotate therewith bearing in frictional contact
with the mandrel behind the point whereon the spiral winding operation is per-
formed. By this means the metal or composition strip is relieved to some extent
from tensile strain during the winding operation.
In Figure 9 of which Figure 5 is a plan view the segmental collar attached to a
removable bush is represented having internal projections thereon arranged
according to the required pitch to act as a guide nut keeping the metal or composi-
tion strip in position beneath the dies M. N. P. during the finishing operation of
finally closing the spirally wound tubular casing upon the mandrel. The removable
bush corresponds in purpose with a removable bush the two being selected of
an internal bore corresponding with various size mandrels / employed for the varying
sizes of spirally wound tubular casing to be produced.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what [
claim is:
1. In apparatus for producing spirally wound tubular casing the means of
regulating and setting the finishing dies M. N. P. substantially as described.
2. In apparatus for producing spirally wound tubular casing, the employment of
friction wheels s for the purpose of minimising the tensile strain upon the metal or
composition strip during the finishing operation of spirally winding and closing
substantially as described.
3. Flattening between suitable dies in a screw or hydraulic press spirally wound
tubular casing to form a covering for belts, bracelets, dog and other collars and
harness ornaments substantially as described.
4. In apparatus for producing spirally wound tubular casing, the employment of
the segmental collar with internal projections to perform the office of a guiding nut
substantially as described.
5. In apparatus for producing spirally wound tubular casing, the employment of
the set screw for regulating the position of the primary shaping wheel a as shown
at Figures 10 and 16 substantially as described.
6. In apparatus for producing spirally wound tubular casing, placing the final
shaping dies c d upon a bed to support the metal or composition strip and confine it
within these dies which determine its final shape according to the relative position of
the dies governed by the set screw e substantially as described.
Dated this 25th day of November 1889.
AYRTON & THOMAS,
Agents for the Applicant.