AN IMPROVED ROSE-ENGINE
Year: 1885

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I GEORGE FREDERICK REDFERN of the General Patent Office N° 4 South Street,
Finsbury in the county of Middlesex, Patent Agent do hereby declare the nature
of the said invention for AN IMPROVED ROSE-ENGINE a communication from
abroad by Anton Zemann, Lithographer and Wilhelm Putzker, Gentleman both of
Vienna, in the Empire of Austria to be as follows:-
In the rose-engine which forms the subject of this invention, an oscillating burin
traces undulating circles or ellipses upon the fixed even surface to be ornamented
with guilloches. The main driving part of the machine consists of a vertical shaft
provided with a crank and handle; the said shaft passes freely through a sliding
carriage, and to its top portion is either centrally or eccentrically fastened a circular
disc placed between two cheeks, extending perpendicularly to the path of the
aforesaid sliding carriage. To the underside of this carriage are connected a
certain number of patterns consisting of discs having jagged or undulated edges;
these superposed patterns are rigidly connected to each other and combined with
means for effecting their angular adjustment. The vertical shaft passes down
through central holes in the patterns and its bottom end carries by means of a
radial arm a system of levers comprising the burin holder. By a pin which is
moveable end wise and radially arranged outside the patterns and vertically adjust-
able so that it can be caused to touch by one of its ends the circumference of one
or the other of the superposed patterns, an oscillating movement is imparted (while
the vertical shaft revolves) to the lever arrangement, the innermost limb of which
is caused by suitable means to bear on the other end of the said endwise moveable
pin, likewise carried along by the rotating shaft.
It has been stated above that the vertical shaft is either centrally or eccen-
trically connected to a circular disc; to effect this change of positions the said
circular disc is provided with a radial slot in which the vertical shaft can be moved
sidewise without at the same time turning on its axis, and at any given point of
DQ,71

page_text: which it can be fixed. The arm, by which the lever arrangement is connected to
the vertical shaft carries a horizontal slide extending perpendicularly to the direction
of the said slot in the circular disc and to the carriage moveable on the said slide
are jointed two one-armed frame shaped. levers, videlicet, an upright one turning
round a horizontal axis, and a second one turning round a vertical axis. This
latter is caused, by a spring or its equivalent to bear constantly upon the upright
lever, which bears upon the aforesaid end wise moveable pin acted upon by the
pattern. In order to afford means for the adjustment of the length of the lever
arms and hence of the amplitude of the oscillations of the horizontally moveable
lever, the contact between both levers is established by the medium of a pin
inwardly projecting from the horizontally moveable lever and being horizontally
and vertically adjustable upon the same. To the lower edge of the horizontally
moveable frame shaped lever is jointed the burin holder, freely turning round its
horizontal axis and forcing the burin onto the surface to be ornamented by its
gravity which can be increased by additional weights.

page_text: I, GEORGE FREDERICK REDFERN, of the General Patent Office, N° 4, South Street,
Finsbury, in the county of Middlesex, Patent Agent do hereby declare the nature
of this invention (a communication from abroad by Anton Zemann, Lithographer
and Wilhelm Putzker, Gentleman, both of Vienna, in the Empire of Austria) 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 that class of rose-engines by means of which closed
undulating curves can be traced the said curves being generally in the form of.
circles or ellipses. The improved rose-engine consists mainly of a vertical shaft,
provided with an oval chuck, and carrying at its lower end an arrangement. of
levers with which the graving tool is connected, while its centre portion is surrounded
by adjustable patterns.
In order to enable the invention to be fully understood I will describe the same
by reference to the accompanying drawing in which figure 1, is a front elevation
of a rose-engine constructed according to this invention; figure 2 is a sectional side
elevation and figure 3 a plan view of the same; figure 4 is a detached plan view of
part of the machine shewing the arrangement of levers.
The supporting plate a, of the apparatus which is placed upon the even surface,
to be ornamented is provided with an opening a', having marks a², engraved on
its edges and by means of which the article to be ornamented, with guilloches can
be adjusted.
The said supporting plate a, carries curved uprights b, b; the centre portion b¹,
of the cross piece connecting the curved uprights b, b, at their upper ends serves as
a slide for a carriage c; in the said carriage is inserted a tube or socket d, having
its lower end projecting downwards through a longitudinal slot in the slide. In
this socked d, revolves a shaft e, and on the outside of the same patterns f, are
loosely placed; the said patterns f, are connected by means of a pin, with a worm-
wheel, adapted to revolve round the socket d, and gearing with the worm f¹,
serving to adjust the position of the patterns as required. Upon the top end of the
socket d, rests a circular disc g, provided with a radial slot g¹, through which
projects the shaft e. The disc g, carries on small blocks the bearings of an endless
screw g², which works in a female screw g³, rigidly connected to the vertical shaft e.
The disc g, is prevented from moving in a direction parallel to the slide 6', by two
cheeks 6, 62, screwed on the cross piece connecting the curved uprights b, b; by
turning the screw g³, the shaft e, can be caused to move along the slot g', when the
said shaft will carry along the carriage c. It will be obvious that the shaft.e, when
turned by means of a crank handle e¹, will carry along the disc g, and that during
this movement the shaft e, will be caused to move to and fro in the direction of the
slide b¹, when the shaft is eccentric to the disc g, and the latter will in this case
oscillate between the cheeks b³, bª,

page_text: The bottom end of the vertical shaft e, carries by means of a radially projecting
arme, the arrangement of levers, by which an oscillating movement depending on
the shape of the pattern f, is imparted to the burin h. This latter is adjustably
fixed to an arm i, freely suspended on a horizontal axis and the burin is therefore
only pressed onto the surface to be covered with guilloches by the weight of the
arm; by small weights screwed on the said arm, the pressure exerted may be
regulated as required-The arm i, has its axis on a flat frame j, moveable round a
vertical axis formed on one edge of the frame by two points having their bearings
on a carriage k. This carriage k, is moveable on a horizontal slide ³, in a direction
perpendicular to the slide b', and for moving the same, an endless screw k¹, is
provided, passing through a female screw connected to the carriage. To the
carriage k, is jointed a flat frame 1, moveable round a horizontal axis which is
likewise formed by two points; the said frame l, bears at its front or inner surface
upon a sliding pin m², the other end of which pin is in contact with the periphery
of one of the patterns f. The pin m³, rests loosely in a socket m, adapted to be
raised and lowered in the slotted end of an arm e³, screwed to an arm e². The
frame j, is provided at the end opposite to its vertical axis with a pin j, projecting
perpendicularly to its inner surface and adjustable in vertical and horizontal
directions; a flat spring ja, is secured to the carriage k, and serves to constantly
force inwards the frame j; the pin j', bears upon the back surface of the frame 1.
When the shaft e, rotates the projections on the circumference of the pattern f,
cause the pin m³, to slide in its socket m, towards the frame 1, which is consequently
turned round on its horizontal axis and carries along by means of the pin j¹, the
free end of the frame j, and a reverse movement takes place under the action of
the spring, every time the pin m³, enters a sinus on the edge of the pattern. The
arm, and burin h, obviously follow the movements of the frame j, and conse-
quently the burin h, will trace an undulating curve the form of which will depend
on the shape of the pattern f, and on the position given to the adjustable pin 1¹.
It is to be observed that the point of the burin h, will not change its position,
while the shaft e, is centrally connected with the disc g, and while the said point
is exactly in a line with the axis of the shaft e. On the other hand, when the
point of the burin is moved out of a line with the shaft's axis by means of the
screw, it will trace a circle concentric with the shaft e. Finally the shaft e,
having been moved in the slot g³, of the disc g, the point of the burin will trace
straight lines or ellipses, according as it is placed in or out of a line with the axis
of the shaft c.
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. In a rose-engine, the combination with a vertical shaft e, carrying the
arrangement of levers which oscillates the burin, of a sliding carriage c, through
which passes the shaft e, and to the underside of which the patterns f, are
adjustably fastened; a circular disc g, to which the shaft e, can be concentrically
or eccentrically connected and which is free to move between two cheeks b³, b³,
perpendicularly to the path of the sliding carriage substantially as herein before
described and represented in the accompanying drawing.
2. In a rose-engine having a vertical shaft e, sliding carriage c, and circular
disc g, as described, the combination with the arrangement of levers for oscillating
the burin, of a sliding carriage k, supporting the said arrangement of levers and
having the slide 2, rigidly connected to the shaft e, in a perpendicular direction to
the slot g', in the disc g, along which the shaft c, can be moved substantially as set
forth.
3. In a rose-engine having a vertical shaft e, sliding carriage c, circular disc g,
and a sliding carriage k, supporting the lever arrangement of the burin as described
the combination with patterns f, adjustably fastened to the carriage c, of an endwise

page_text: moveable pin m¹, and of two frames or flattened levers and j, jointed to the
carriage k¹, the frame being moveable round a horizontal axis and bearing upon
one end of a pin m', the other end of which touches a pattern f, and frame j,
moveable round a vertical axis carrying the burin h, and being adapted to bear
upon the frame 1, substantially as herein before described and represented in the
accompanying drawing.
4. In a rose-engine having a vertical shaft e, sliding carriage c, circular disc g,
sliding carriage k, patterns f, end wise moveable pin m³, and frames and j, as set
forth, the combination with the frame j, of the freely swinging arm i, to which the
burin h, is adjustably fastened and which can be weighted as required substantially
as and for the purpose herein before described.
5. In a rose-engine having a vertical shaft e, sliding-carriage c, circular disc g,
sliding carriage k, patterns f, frames and j, and an endwise moveable pin m³, as
set forth the combination with the socket m, in which slide pins m³, of means for
raising and lowering the said socket for the purpose of alternately using several
patterns substantially as hereinbefore described and represented in the accom-
panying drawing.
G. In a rose-engine having a vertical shaft c, surrounded by fixed patterns f, an
endwise moveable pin m³, and frames and j, moveably connected to the said shaft
as set forth the combination with the frames or flattened levers and j, of a
vertically and horizontally adjustable pin ¹, projecting from the inner surface of
the frame j and bearing upon the outer surface of the frame l, for the purpose of
varying at will the amplitude of the oscillations of the burin substantially as
hereinbefore described and represented in the accompanying drawing.