Improvements in Machines applicable for Ornamenting Hollow Metallic Articles or Dish or Similarly Shaped Metallic Plates.
Year: 1892

page_text: Date of Application, 17th Sept., 1892-Accepted, 7th Jan., 1893
COMPLETE SPECIFICATION.
Improvements in Machines applicable for Ornamenting Hollow
Metallic Articles or Dish or Similarly Shaped Metallic Plates.
A communication by GUSTAV KLUMPP, of Esslingen, in the Empire of Germany,
Engraver.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, and 6 Bank Street, Man-
chester, both in the County of Lancaster and 323 High Holborn, in the County
of Middlesex, Civil 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 has for its object to impress thin shaped plates (such as dishes,
baskets, etcetera) or conical hollow articles, with deeply moulded or deeply
projecting figures, such as has not hitherto been produced by any apparatus but
could only be effected by chiselling or chasing out the ornamentations.
It is not now a question of producing turned in annular ornamentations such as
edgings, etcetera, or ornamentations of small depth, such as are produced by the
usual milling machines, or flat ornamentations such, for instance, as are produced
by inserting a wire sheeting between the stamp and matrix, but of producing by
means of stamp and counter stamp deep ornamentations, for instance on hollow
articles, winding spirally round these latter, one of which stamps is generally
conical in form or forms a part of a cone or other body, whilst the counter stamp
contains, on an annular disc, or on a segment of one, the exact counterpart of the
profile of the former.
All attempts to impress dished plates or hollow articles with strongly projecting
ornaments, or figures, have not succeeded beyond the above mentioned slight
ornamentations, or borders, and the like, for instance, when two ornamented
conical rollers were employed, driving by means of friction or tooth gearing was
not suitable, as, in the case of deep ornamentation, the articles must pass under the
rollers several times. The ornamentation is thus gradually produced until it
attains its full depth, that is, both rollers are gradually approached. The position
of one roller to the other as regards the fit of the ornamented portions must, how-
ever, always remain exactly the same. This is impossible when the rollers are
driven by gearing, as, when these stand at greater or less distances apart, the play
between the teeth becomes a greater or less one.
The transfer of the ornamenta-
tion from one conical roller to the corresponding counter roller is also impossible
on account of the difference in the speed of rotation at the various parts of the
same.
Both these drawbacks are removed by this invention, which will be best under-
stood by aid of the accompanying sheet of illustrative drawings, on which :-
Figures 1, 2 and 3 are a side view an end view aud a plan respectively of a press
fitted with these improvements.
Figures 4 and 5 are a partial side view and plan of a modified form of press.
Instead of two rollers, one roller is employed and an exactly corresponding
superficial counterpart of the same on an annular disc or segment of a disc, whilst
the point of intersection of the axis and the edge line of the disc falls in the axis
of the roller, as will be clearly seen in Figure 1.
This annular disc or segment is
so attached to a flat disc that its centre coincides with the centre of rotation of the
same. This flat disc B is driven by means of a conical pair of wheels C c, whilst
the roller spindle a and the spindle a' carrying the conical gearing c are driven by
equal sized worm wheels g and g' placed on these spindles, which, in turn, are
operated by equal sized worms d and d' arranged on a common spindle e, these

page_text: latter worms being made movable on this spindle and adjusting themselves with
the bearings or supports f and f' of the axles a and a'. The worm axis e is driven
by any suitable arrangement.
In the drawing, belt gearing with mitre wheels is shown. The worms d and d¹,
one of which has a left and the other a right hand thread, fit entirely fully into
their respective worm wheels g and g¹ and an equal speed of rotation of the two
axles a and a' is thereby produced, even when the distance of these axles to one
another is altered, without any play being caused between the teeth of the driving
wheels. The conical roller stamp H is easily interchangeable and is so arranged
on the projecting end of the shaft a that its larger base lies in a vertical plane with
the larger pitch line of the conical gearing C. The diameter of this base is of
exactly equal dimensions with this pitch line. Its circumferential speed is thereby
exactly the same as that at the corresponding part of the flat disc B, or of the
shaping ring H¹ fixed thereon. The circumferential speed of all parts of the
surface of the roller also exactly corresponds with the corresponding parts of
the shaping ring.
So long as one part of the line m m³ of the triangle m m² m² forms the contact
line between stamp roller H and shaping stamp H', both stamps may be made of
any suitable size within m m², that is to say, ornamentations may be produced with
the same apparatus on dished or basket shaped plates of various sizes by altering
the form of the stamp. If the sectional form of the vessel at the spot where the
ornamentation is to be imprinted be not straight, as shown, but curved or otherwise
formed, one or more packing pieces ("vermittelnde gerade") is or are chosen
therefor which coincides with the line mm². The differences, which are hereby
caused by unequal speed of both stamps at the points more or less distant from this
packing piece or pieces, are, of course, not compensated for by a suitable choice of
ornaments, but still are so far counteracted that, in stamps and counter stamps of
different form, they do not influence the correct impression of the ornamentations
which appear somewhat pressed down from the normal form in one stamp, and, in
another, somewhat extended longitudinally.
If the angle of the vessel, at the point where the latter is impressed, differs too
much from the angle of the conical pair of wheels C c, that is to say, if ornaments
are to be impressed in more or less conical hollow articles, or larger or smaller dish
or basket shaped plates, a smaller or larger flat disc B is employed with a suitable
conical pair of wheels C c, and the interchangeable support J for this purpose is
replaced by another more suitable one, and the bottom bearing 6' of the axis b of
the flat disc suitably adjusted.
The front bush support h of the roller shaft a is made adjustable so that the
latter is better protected against bending in case smaller dish shaped bodies are to
be ornamented.
In order to resist the pressure exerted on the disc B by the stamp H during the
impressing of the ornamentation, one (or even more) adjustable pressure roller r is
arranged underneath the disc.
If deeper ornaments are to be impressed in cylindrical hollow thin articles, the
stamp H and counter stamp H¹ are also made cylindrical in form.
By a suitable selection of the form of the stamp H, the original form of the
surface of the hollow article (that of a revolving body) may be completely altered
during the impressing in such a way that it appears prismatic or alternately
prismatic and circular, whilst, at the same time, an ornamentation of the surface
thus altered may also take place.
In order that the same machine may also be employed for producing similar
impressions in straight, flat or shaped sheet metallic strips, the flat disc B is removed
together with the counter stamp H' also the conical wheels C and c, axle b and
support J as well as the pressure roller r. The stamp H2, which has the original form
of the section of the strip of metal, is then placed on the lower axis a', and the straight
counter stamp H³, the section of which coincides with that of the strip of metal, is
fastened on a support L which is movably inserted in the slide K. This arrangement

page_text: is shown in Figures 4 and 5. The turning of the stamp H³, or the pushing forward
of the counter stamp H is effected by means of a spur wheel c and ratchet bar C',
whilst the pitch line of the spur wheel c¹ has the same size as the round stamp H²,
or, when this latter has a shaped section, as the central diameter of the stamp.
The ratchet bar C¹ is like the counter stamp H³ arranged on the support I,
Figures 4 and 5.
The rest of the mechanical arrangement is that of an ordinary strong roller
press.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. The improvements in machines applicable for ornamenting hollow metallic
articles or dish or similarly shaped metallic plates substantially as hereinbefore
described and consisting more particularly in a machine in which one of the
stamping rollers hitherto employed is replaced by a flat disc on which, as counter
stamp, the exact counterpart of the roller stamp is attached, the roller stamp and
counter stamp being operated by means of conical gearing, worm gearing, and
movably arranged worms in such a way that it is possible to gradually impress the
ornamentation in the sheet metallic articles by gradually approaching the two
stamps, substantially as herein before described.
Dated this 16th day of September 1892
WM. P. THOMPSON & Co.,
Agents for the Applicant.