Improvements in Shaft Governors for Steam Engines.
Year: 1893

page_text: Date of Application, 30th Dec., 1893
Complete Specification Left, 27th Sept., 1994-Accepted, 22nd Dec., 1894
PROVISIONAL SPECIFICATION.
Improvements in Shaft Governors for Steam Engines.
I, FERDINAND BOSSHARDT, of the Firm of F. Bosshardt & Co., of
4, Corporation Street, Manchester, in the County of Lancaster, Patent Agent, do
hereby declare the nature of this invention which has been communicated to me
by Johann Rudolf Frikart, of 24, Karlstrasse, München, in the German Empire,
Engineer, to be as follows:-
-
This invention relates to improvements in shaft governors for steam engines such
as described in my Provisional Specification No. 16041, dated August, 25th 1893,
and has for its object to provide means which will prevent the weight and centri-
fugal force of the eccentric which moves the valves influencing injuriously the
adjustment of the said eccentric.
To this end I employ upon the arm of the said eccentric a balance weight in
such a manner that the total centre of gravity of the same will be as near as
possible to the point of its suspension in order that the moment of adjusting the
weight of the eccentric and that of its centrifugal force will be nil or near thereto
in relation to the point of suspension of the said weight.
Dated this 29th day of December 1893.
F. BOSSHARDT & CO.,
Agents to Applicant.
COMPLETE SPECIFICATION.
:
Improvements in Shaft Governors for Steam Engines.
I, FERDINAND BOSSHARDT, of the Firm of F. Bosshardt & Co., of
4, Corporation Street, Manchester, in the County of Lancaster, Patent Agent, do
hereby declare the nature of this invention which has been communicated to me
by Johann Rudolf Frikart, of 24, Karlstrasse, München, in the German Empire,
Engineer, 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 improvements in shaft governors for steam engines such as
described in my Specification of Letters Patent No. 16041, dated August, 25th 1893,
and has for its object to provide means which will prevent the weight and centri-
fugal force of the eccentric strap which moves the valves influencing injuriously
the adjustment of the respective eccentric.
And in order that my invention may be more fully understood I have caused
to be appended hereunto one sheet of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. 1 is a sectional end view and Fig. 2 a longitudinal section of my improved
shaft governor.
In carrying out my invention and referring to the figures generally I employ
upon the arm of the eccentric strap S a balance weight P in such a manner that
the centre of gravity and centrifugal force of the strap S will be as near as
possible to the suspension point Y of the weight P in order that the centre of

page_text: gravity and centrifugal force of the strap S will vary little or none in relation to
the fulcrum Y.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, declare that what I
claim, is-
In shaft governors for steam engines, the employment of a balance weight P on
the eccentric strap S for the purpose of bringing the centre of gravity completely
or nearly to the point of suspension Y of the weight P, all substantially as set
forth.
Dated this 26th day of Sentember 1894.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.