Improvements relating to Dynamo Electric Machines, with Motors for Driving the same.
Year: 1896

page_text: Date of Application, 9th Dec., 1896-Accepted, 13th Feb., 1897
COMPLETE SPECIFICATION.
Improvements relating to Dynamo Electric Machines, with Motors
for Driving the same.
We, ARTHUR FISCHER, of Blutenburgstrasse 137, Electric Engineer and
ADOLF HELD, Maximilianstrasse 30, Electric Engineer, both of Munich, in the
Empire of Germany 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 consists of a combined dynamo electric machine with a pallet-
wheel or turbine serving as a motor for driving the same operated by water,
compressed air, or steam. This driving wheel and the armature of the dynamo-
machine are situated on a common axle and form together a machine, which can
be connected to a pipe for supplying water under pressure, compressed air, or
steam and used for producing an electric current for illuminating purposes, for
galvanoplastic-work for operating sewing machines or other uses. This system is
therefore especially useful for the quick and temporary production of small motive-
power to be used for domestic purposes, or in small industrial workshops.
In the annexed drawing,
Fig. 1 shows the machine in longitudinal section.
Fig. 2 is a cross-section through the fly-wheel motor,
Fig. 3 is a view showing the fixed magnets.
Fig. 4 shows the ring armature.
Fig. 5 is a detail view.
In the casing A is keyed upon the horizontal axle B the pallet-wheel C which
lies closely with its circumference to the inside face of the peripheral flange of the
upper part of the casing, and with its side faces to the casing and the cover C
respectively, the casing forms below with the base plate D a space E, which
continues under the cross piece F and is connected by the opening f with the
laterally arranged jet-pump G. The latter consists of several hollow truncated
cones 9 put into one another, and arranged at the end of the tube H, which
latter admits the driving medium (water or compressed air, or steam). The
spindle serves for closing the hindermost cone. The under part of the casing is
filled with water, the height of which is determined by the outflow tube I
provided with a regulating closing plate i. When therefore the pressure medium
enters through the tube H into the cones g, it draws like an injector, water through
the opening, so that especially when using steam or air, the pallet wheel cells
are completely filled with water, whereby a much better effect is obtained.
The water leaves again at E, the superfluous quantity leaves through the tube I
and the quantity remaining on the bottom repeats the circuit.
The shaft B goes through the very strongly built back wall of the casing and is
carried at.the other end by the bearing K, the supporting arm of which is fixed
to the under part of the casing A. On the back-wall of the casing A is fixed
the cross L, which forms the poles of the magnet, and on the arms of which
are slid the wire bobbins L'; the poles are formed of the soft-iron blocks L
screwed upon the arms, the outer faces of which iron blocks are formed to accord
with the ring armature. This ring armature is fixed on the spider M keyed
upon the shaft B, the arms of this spider carrying at the ends wrought iron
bolts m, upon which are slid the flat wrought iron rings N N'. These are insulated

page_text: from one another and from the bolts m by means of asbestos and are also separated
from one another by the intervals 1, which are produced by rings, consisting of
insulating material slid between each two rings N N upon the bolts m. The
exterior, stronger built rings N2 keep the whole lamellar rings together, when
the screw nuts are screwed on the ends of the bolts m. The rings N N are
provided with holes o near the exterior and interior edges and pass through the
whole armature as channels, through these channels are guided the covered
wires w in the manner shown in Fig. 4 and thus a continuous binding is obtained:
the connection of the spools to one another and the connection to line as in the
"Gramme" machine being effected in the known manner on the commutator.
In this construction therefore the coils are completely enclosed in the ring N so
that displacement of the windings by means of the centrifugal force is completely
avoided. The current is taken from a commutator Z fixed upon the axle by means
of the brushes in the known manner the bracket K serves as a bearing for the
brush holder. Wires pass from the brushes to the two insulated terminals Q
fixed upon the casing.
Having now particularly described and ascertained the nature and in what
manner the same is to be performed we declare that what we claim is :-
1. A dynamo electric machine, on the rotary axle of which is a motor within
a shell or casing and consisting of a pallet or turbine wheel, which is driven by
compressed air, water or steam, and is strengthened in its effect by the arrange-
ment in the admission pipe of a jet-pump or injector the suction tube of which
draws water from a vessel forming the underpart of the motor casing, which water
flows afterwards back again into this vessel.
2. In the dynamo electric machine described in Claim 1 the formation of the
casing wall as pole core by the formation of a cross or starlike arms, standing
freely on the cast iron-wall, carrying the magnet spools, the pole ends being
surrounded by a ring armature on the driving axle.
3. In a dynamo electric machine as in Claims 1 and 2, a ring armature con-
sisting of several rings of flat-iron, slid on horizontal bolts carried by the arms
of a spider on the driving axle which rings are insulated from one another and
from said bolts and are kept separated from one another by interposed rings slid
upon these bolts, which lamellar ring armature thus formed is provided near the
borders with holes, through which the induction wires are guided in such a
manner that the induction spools do not surround the ring armature exteriorly.
Dated this 9th day of December 1896.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C., Agents to Applicants.