IMPROVEMENTS IN TURBINES FOR STEAM AND OTHER MOTIVE POWER
Year: 1883

page_text: LETTERS PATENT to Friedrich Hermann Felix Engel Civil Engineer and
Patent Agent in the city of Hamburg Germany for an Invention of
IMPROVEMENTS IN TURBINES FOR STEAM AND OTHER MOTIVE POWER a com-
munication to him by Gustaf de Laval Doctor of Philosophy of Stockholm in
PROVISIONAL SPECIFICATION left by the said Friedrich Hermann Felix
Engel at the Office of the Commissioners of Patents on the 2nd April 1883.
FRIEDRICH HERMANN FELIX ENGEL Civil Engineer and Patent Agent in the
city of Hamburg Germany IMPROVEMENTS IN TURBINES FOR STEAM AND OTHER
MOTIVE POWER a communication to me by Gustaf de Laval Doctor of Philosophy
of Stockholm in the Kingdom of Sweden.
n.
This invention relates to certain improvements in turbine wheels and especially
to turbine wheels with central supply and direct action in which the shaft or
axle of the turbine wheel is by means of friction bevel-wheels in gear with the
driving shaft of the machine. The turbine wheel consists of one, two or
more curved tubes the inner ends whereof are in direction of the axle of tho
wheel bent further towards the inlet pipe of the driving fluid. The tubes are
mounted between two metal discs one of which is furnished with a boss by
means of which the wheel is fastened to the free end of its shaft or axle. The
driving fluid steam, or water enters the curved tube or tubes in direction of
the axle and exerts to the latter a pressure in its longitudinal direction, in
consequence of which the small friction wheel fastened to this axle is pressed
against the large friction wheel of the shaft to which the motion has to be
transmitted. At same time the driving-fluid passes through the tubes and
turns the turbine wheel by reaction.
In order to prevent the small friction bevel wheel from loosening its hold
on the large one it will be necessary to have the pressure between their surfaces
not less than three times as great as the maximum value of the driving power
of the two wheels. The whole machine may practically be enclosed in a cast
iron casing containing the bearings for both shafts as well as inlet and outlet
openings for the driving fluid.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Friedrich Hermann Felix Engel in the Great Seal Patent Office
on the 2nd October 1883.
FRIEDRICH HERMANN FELIX ENGEL, Civil Engineer and Patent Agent in the
city of Hamburg Germany IMPROVEMENTS IN TURBINES FOR STEAM AND OTHER
MOTIVE POWER a communication to me by Gustaf de Laval Doctor of Philosophy
of Stockholm in the Kingdom of Sweden.
This invention relates to certain improvements in turbine wheels and especially
to turbine wheels with central supply and direct action in which the shaft or
axle of the turbine wheel is by means of friction bevel wheels in gear with the
driving shaft of the machine.
The turbine wheel consists of one, two, or more curved tubes the inner ends
whereof are in direction of the axle of the wheel bent further towards the inlet
pipe of the driving fluid. The tubes are mounted between two metal discs one
of which is furnished with a boss by means of which the wheel is fastened to
the free end of its shaft or axle. The driving fluid steam or water enters the
curved tube or tubes in direction of the axle and exerts to the latter a pres-
sure in its longitudinal direction in consequence of which the small friction
wheel fastened to this axle is pressed against the large friction wheel of the
shaft to which the motion has to be transmitted. At same time the driv-
ing fluid passes through the tubes and turns the turbine wheel by reaction. In
order to prevent the small friction bevel wheel from loosening its hold on the
large one it will be necessary to have the pressure between their surfaces not
Jess than three times as great as the maximum value of the driving power of
the two wheels. The whole machine may practically be enclosed in a cast
iron casing containing the bearings for both shafts as well as inlet and outlet
opening for the driving fluid.
In the accompanying Sheet of drawings is illustrated a construction accord-
ing to this invention,. ii are two discs between which two curved tubes a
and are fastened is the inlet for steam water or other motive fluid, n the
shaft slideable in its bearings in direction of its length and fastened to disc. i.
cd are the bevel friction wheels and m the main shaft driven by the turbine
and furnished with a transmission pulley 0, e is a set screw for the conical
friction gear.
P is a casing for wheel & Ha casing for wheel and R a casing with outlet
opening for the turbine tubes which casings may all or partly be cast to the
foundation or frame of the machine. Having thus described the nature and
particulars of the said Invention I claim
The direct acting turbine-wheel consisting of one or more curved tubes a bin
combination with a shaft or axle and central supply or feed tube f as herein
set forth and shown by the annexed sheet of drawings.
In witness whereof I the said Friedrich Hermann Felix Engel have hereunto
set my hand and seal this twenty-ninth day of September in the year of our
Lord 1883