An Improved Hot Plate for Cooking Ranges.
Year: 1899

page_text: Date of Application, 18th May, 1899-Accepted, 22nd July, 1899
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COMPLETE SPECIFICATION.
An Improved Hot Plate for Cooking Ranges.
I, FEDOR WENDEL, of Poststrasse, 18c, Jlversgehofen, near Eufurt, Germany,
Teacher of Music, 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:-
The subject matter of the invention is a cooking range plate in which the rings
and covers which serve to close the holes in the plate or to regulate their
diameter to the size of the various cooking vessels, are not loosely inserted but,
being jointly pivoted may be raised from, or let down into their seat, singly
or in groups, by an oscillating motion. They are moved either direct by hand,
by means of bridges or eyes arranged on the surface of the rings, or else by the
aid of tappet pins arranged on the pivot pin, or bolt of the rings, and by which
when inserted in longitudinal slots, the rings may be raised by a partial revolu-
tion of the pin or bolt controlled mechanically from a common centre.
In the annexed drawing a range-plate, with one hole only, is shown by way
of illustration.
Fig. 1, is a plan, showing the arrangement for shifting the rings mechanically
from a common centre.
Fig. 2, is a plan, showing the pivot pin or bolt of the rings, with the revolving
eyes, arranged for being moved by hand, by means of bridges or eyes.
Fig. 3, is a cross section through the plate, in a line at right angles to the
centre-line of the pivot pin or bolt of the rings.
Fig. 4, is a side elevation of the plate, parallel to the aforesaid cross-section.
Fig. 5, is a sectional elevation.
Fig. 6, a front elevation.
Fig. 7, a plan of a suspension eye of the rings, on an enlarged scale.
Fig. 8, is a plan showing the eye for raising the rings, by means of a hook
arranged on the surface of the plate.
Fig. 9, is a section of the same, with hooks inserted on the lower side for
turning down the ring.
Referring to the drawings g is the plate for closing the opening a and f
The rings
the rings for varying the size of the said opening and of which there may be
any desired number, three however being shown in the present case.
are provided with a circumferential horizontal flange and are recessed upon their
upper surface, the size of such recess being sufficient to accommodate the next
35 ring of diminishing diameter, or the top plate g. The rings f are each secured
to or cast integral with the side pieces or arms h and the plate g is provided
with a plate i. The arms in each case are recessed to allow of the arms of the
superposed rings to fit therein and lie flush with the surface of the ring. The
arms and the plate i have formed respectively at their outer ends eyes de
40, by which they are loosely mounted upon a pin or bolt b, the ends of which are
supported by suitable brackets or supports m cast or otherwise secured to the
top plate of the range, Fig. 2. The oscillating motion of the various parts
used either directly by hand or by means of a suitable hook, by the aid o

page_text: and 9
small bridges or eyes arranged on their upper surfaces shown in Figs.
or else from a common centre, arranged either on the plate or outside, by means
n of the lower
of the arrangement shown in Figs. 1 and 4. Those parts
part of rings f," which are situated between the parallel limbs of the upper
part h, h, (and when the cover g is closed, underneath its upper part i,) adjoin
each other with their narrow sides, butt-joint fashion"; in order to prevent
the escape of smoke through the crevices which may be formed between them
if they are not fitted quite accurately, these parts are arranged so as to overlap
each other and thus guaranteeing a smoke-tight joint even when the cover
is turned up.
The horizontal pin or spindle b around which the vertical oscillation of the
rings and the cover y takes place, is provided with a number of short, round
or polygonal pins r of equal diameter, being so-called tappets. These are
arranged as shown with regard to the rings, and can be shifted to and fro
by a longitudinal displacement of the spindle b and engage with
longitudinal slots of the suspension eyes c and d of the cover and rings.
By this arrangement, turning the spindle b would at the same time cause all
rings, including the cover, to be raised, but as this shifting is desired to effect
those rings only which cover the part of the cooking hole which is to be
exposed in each case, it is necessary to make an arrangement by which the
rings beyond the desired opening would be retained in position. This condition
is ensured by axial segmental recesses s (reaching in depth to the lower edge
of the spindle b and arranged on the suspension eyes d of the rings. The width
of these recesses differs in the various rings, equalling, in the case of the ring
next to the lid, the diameter of the tappet pin, in the case of the next larger
one, twice this diameter, in the case of the next one three times this diameter,
and so on, as shown Fig. 1. By this arrangement, by shifting the axis of the
revolution b, the pins for each ring can be shifted separately, as required,
from the segmental recesses into the longitudinal slots t.
Under normal conditions the pins controlling the smallest ring, are situated
in the segmental recesses of its suspension eyes so that on turning spindle b
the central cover only, which is not recessed, will be raised, while all other rings
will remain in their former position, this being due to the liberty of motion
afforded to their tappet pins in the segmental recesses s.
If, however, the spindle b is shifted lengthways, to an extent equalling the
diameter of the pins r, the pins of the smallest ring will be shifted from the
segmental recesses into the longitudinal slots of its suspension eyes so that this
ring will now have to turn with the spindle b, while all the larger-sized rings
will still remain in their former position as their pins are still free to move in
their wider segmental recesses. But on shifting the spindle further inwards,
the next ring will also be engaged so as to be compelled to follow the motion of
the spindle. Every further longitudinal displacement of the spindle to the
abovementioned extent will cause the next following ring to be caught by its
tappet pins, so that in this way, finally, the whole system of rings can be
turned by suitable displacement of the axis of revolution. This displacement is
effected by means of a handle z arranged at one end of the spindle, while a
scale is arranged on the part of the spindle immediately behind this handle.
The knife-edge of a slide y can be inserted into the notches of this scale so as
to mark, and set the spindle each time for raising, the desired number of rings.
This raising itself is effected in a known manner by an arrangement acting
direct upon the spindle or by the transmission to the axis of revolution, by
means of the levers u attached respectively to the spindle and the spindle o,
of motion imparted to the latter spindle by the crank w and transmitted from
one to the other of the levers by means of the rod v. The spindles and o
are supported by the flange to which is also attached the slide У aforesaid.
For practical reasons, in order to bring the spindle into the desired position,
together with its pins r, without any detachment of the latter, the longitudinal

page_text: st may be extended beyond their requisite measu
ole length of the suspension eyes d and e, and the bearings of the spindle may
o be suitably slotted.
Having now particularly described and ascertained the nature of my said
vention, and in what manner the same is to be performed, I declare that what
claim is:-
1. A cooking range having a hot plate, characterised by the circumstance
hat its rings f and cover g fitted into each other with overlapping joints, are
ointly suspended by means of eye bearings de which are arranged on the free
ends of their inside extensions (which, in the case of the rings, are in the form
of parallel limbs h and in the case of the covers, in the form of a plate i,) on a
bolt or spindle b which is borne at its ends in bracket-like projections m of the
range plate and which rings can be made to revolve singly or in groups round
the spindle, for the purpose of opening or closing the cooking hole.
2. In the cooking range or hot plate, characterised under Claim 1, the arrange-
ment of bridges or eyes on the front or back part of the rings and covers, by
means of which they can be raised or replaced, singly or in groups, either direct
by hand or with the aid of a hook.
3. In the cooking range or hot plate, characterised under Claim 1, an arrange-
ment for raising the rings in any desired succession from one common centre,
such arrangement being formed by two tappet pins adjusted, for each
individual ring, on the spindle 6 and which are parallel and of equal dimensions
to each other, and which on their spindle b being axially displaced, will be
shifted out of segmental recesses s, allowing them full liberty of motion in the
25 suspension eyes de, into longitudinal slots t of the latter, and when inserted into
these will compel the ring in question, together with the smaller rings resting
on it, as well as the cover, to follow the motion of the suspension spindle 6 when
this is turned, either direct or by means of levers u and connecting rod v from
anarate axis of revolutions o.
1809
carsON &
Co.,