Improved Process and Apparatus for Making Rings and the like of Various Patterns or Sections.
Year: 1899

page_text: Date of Application, 15th Mar., 1899-Accepted, 10th June, 1899
[Communicated from abroad by the Firm of GEORG MÜLLER & Co., of Gmünd, in the
Kingdom of Würtemberg, German Empire, Manufacturers.]
Improved Process and Apparatus for Making Rings and the like
of Various Patterns or Sections.
I, HERBERT SEFTON-JONES, of the Agency for Foreign Patent Solicitors, 322, High
Holborn, in the County of Middlesex, 6, Lord Street, Liverpool, and 6, Bank
Street, Manchester, both in the County of Lancaster, and Lower Temple Street,
Birmingham, in the County of Warwick, Chartered Patent Agent, 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 :—
In the spinning processes hitherto used in the manufacture of patterned rings,
oirclets and the like, there were numerous defects and difficulties, especially through
the manner of forming them which is effected by means of dies under great pressure.
The pieces to be patterned in this manner are straight and must subsequently be
shaped in circular form. The metal has however become very hard by spinning and
before it can be bent it must first be annealed. As it is not possible, moreover, to
shape the ends of such a piece circular these must therefore be cut off which causes
waste of material.
By the present invention, a process is provided in which the rings are spun quickly
and equally, and moreover the part to be patterned immediately takes the form of a
circle and no waste of the material results.
This process which is intended for the manufacture of rings of any desired
pattern for watch cases, serviette rings, cycle wheels and the like, consists in coiling
the material to be employed round a patterned roller and firmly clamping it by means
of projections left on the article in grooves on the roller, whereupon it is drawn
through between the roller and one or more dies. These dies do not operate on a
small surface of the work but are shaped in the form of a part of a circle, that is
their extent amounts to about one-third of the circumference of the roller. In this
manner the work is shaped and patterned by dint of pressure and friction, either over
its whole breadth or at particular places.
In the accompanying drawings an apparatus for carrying out this process is
illustrated :-
Fig. 1 shews a vertical section.
Fig. 2 a side elevation.
Fig. 3 a transverse section through the roller and the die on the line A-A
Fig. 1.
Fig. 4 shews another arrangement of the dies.
Figs. 5 and 6 shew details, Figs. 7 and 8 illustrate respectively the vertical section
and the side elevation of the fixing device for the die.
Fige. 9 and 10 shew in section and side view the method of clamping to the roller
the metal strip to be patterned.
The apparatus consists essentially of a patterned roller a which can be placed
either on one side or on two sides.

page_text: The pattern of the roller a of course corresponds to that of the object to be
manufactured.
The work b consisting of a metal strip or other suitable material is laid round the
roller a which is fixed on the shaft a¹, by hand or by machinery, and fastened thereto
in such a manner that the lugs b¹ provided at both edges of the work b (Fig. 1) fit
into the grooves a³ on the ends of the roller a and are secured by the clamp o. This
is so arranged that on the turning of the screw n³ provided with crank n in the
roller a the conical projection n' is caused to squeeze the clamp o firmly against the
projection a³, whereby the flap 61 between these two parts is firmly clamped.
On the loosening of the screw n³ a spring p effects the easy release of the flaps b¹
from the roller a.
The work b is operated on by one or more dies or implements d, d³, ď³, and
a small wheel d³. The number and arrangement of these implements can be as
preferred.
As already mentioned, the width of these dies is about one third of the circum-
ference of the roller. The spinning process described is attained by means of there
wide dies; if they were narrow or only operated on a portion of the width of the
work fixed on the roller, then it would not be properly spun. Moreover, an exact shape,
conformable to the shape of the roller would not be obtained as the work after passing
through narrower dies would immediately become deformed again.
In the apparatus illustrated in the drawing there are dies or implements d, d², d²,
and the small wheel de which are fixed interchangeably on a roller e arranged above
the roller a.
The roller 6 is rotary so that the pressing devices can be placed radially to the
work; it is besides adjustable in the vertical direction corresponding to the size of
the work, which is effected by means of a spindle g provided with a bandwheel g¹.
Said spindle g engaging with a spindle i by means of a cone wheel shaft h.
In drawing, the roller bearing the dies d, d¹, d³, and the small wheel as must be
firmly fixed or secured against turning. This is effected by means of the apparatus
illustrated in Figs. 7 and 8. On a diso k placed on the axle 1 of the roller &,
notches are provided to correspond with the dies d, d², d² and the small wheel d³.
In one of these notches the projection 12 of the lever fixed in the stand at and
depressed by the spring m engages according as the corresponding tool d is applied
and thus prevents the roller e from turning.
As already observed, the pressing implements are interchangeable, so that very
different patterns can be produced.
By means of the die d, for example, the strip b is drawn throughout the greatest
part of its width, while the die d' is intended for the side depressions 6º, and the die d
for the centre depression 62. The small wheel d³ can be used either for bordering or
cutting off the material.
During the process the roller e does not revolve, but is only moved in a radial
direction against the roller a revolving with the work band then firmly fixed by
means of the above described device. The work is pressed and spun into patterns by
means of the revolving of the roller a and the pressure of the implements d, d², d³,
on the work b, and the friction caused thereby. Instead of the roller e the roller a
might be vertically displaceable and in this case the roller e might be fixed; or both
rollers could be made adjustable with regard to one another.
The process described would also be attained if the roller a were not rotatory but
fixed and the roller & bearing the dies revolved round it.
A further modification of the construction is shown in Fig. 4, in which the dies are
arranged independently of each other around the circumference of the roller a. This
can be done in such a manner that they are movable singly or together against
the work.
In the modification illustrated in Fig. 5 the implements d, d, d², d', are (also
exchangeably) brought upon a base or lever el which is movable in a horizontal
direction. The pressure of the lever ell on the work b, or on the roller a can be
effected by hand or by means of a weight, spring or the like.

page_text: The modification in Fig. 6 shews a two-part cylinder f, f¹ within which the
work 6 and the tools d, d', d³, are arranged so that the work is shaped from
the interior.
It is obvious that in the present process by adapting the form of the roller and
moving the pressing implements to correspond, oval or the like rings can be spun.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, as communicated to me by my
foreign correspondents I declare that what I claim is :-
1) Process for spinning rings and circlets in any desired section or pattern,
characterized by the arrangement that the material to be manipulated is passed over
a patterned roller or within a cylinder patterned internally, and firmly clamped by
means of lugs provided on the work into grooves on the roller or cylinder, whereupon
it is drawn between the roller and one or more dies the width whereof is about one-
third of the circumference of the said roller, in such a manner that the ring is pat-
terned or spun by aid of the friction produced by the wide die either over the whole
width or only a single part thereof, substantially as described.
2) An apparatus for carrying out process characterized under Claim 1, consisting
of a roller (a) shaped according to the pattern desired or of a patterned cylinder
round which is laid the work (6) and a roller (e) furnished with a number of ex-
changeable dies (d) which roller can be placed as near the first roller (a) as the
diameter of the work permits, substantially as described.
3) A modification of the apparatus characterized under Claim 2, characterized
thereby, that the exchangeable dies (d) are arranged independently of each other
round the circumference of the patterned roller (a) and are adjustable singly or
together against the work, substantially as described.
4) A modification of the apparatus claimed in Claim 2, in which the roller (e) is
replaced by an adjustable lever which bears the dies (d, d³, d², d³) and is pressed in
any convenient way against the roller (a) which holds the work.
5) In an apparatus according to Claims 2, 3, and 4, the clamping of the work (b)
by its lugs (6) into the grooves (a²) of the roller (a), by means of a screw (n³)
provided with conical projection (n¹) whereby the pressing device (o) is firmly
pressed against the projection (a³) of the roller (a) and the lugs (61) are
clamped between the pressing device (o) and the projection (a³) substantially as
described.
Lescribed.
Dated the 15th day of March 1899.
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.