Improved Driving Mechanism for Centrifugal Apparatus.
Year: 1893

page_text: Date of Application, 24th Nov., 1893-Accepted, 7th Apr., 1894
COMPLETE SPECIFICATION.
Improved Driving Mechanism for Centrifugal Apparatus.
1, ERIK GUSTAF BESKOW, of 16-18 Folkungagatan, Stockholm, in the Kingdom
of Sweden, Engineer, 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 relates to driving mechanism for centrifugal apparatus adapted to
be operated by hand-power, which mechanism whilst being simple and solid has a
very light and steady motion.
In the accompanying drawing,
Figure 1 is a sectional elevation of a centrifugal machine having my improved
driving mechanism applied thereto, and,
Figure 2 is an elevation at right angles to Figure 1.
My improved apparatus is characterized by the employment of a screw or worm
wheel A mounted on a shaft A¹ journalled in the framing of the machine and
engaging with a worm on the centrifugal shaft B, the said wheel baving an inclined
position relatively to the said shaft, and having its teeth placed either right across
or obliquely to the edge of the wheel according as the inclination of the shaft A' of
the wheel coincides or nearly coincides with the pitch of the screw or worm on the
centrifugal shaft. By means of conical gear wheels C, D the worm wheel A
is connected with a shaft E, journalled in the framing and provided with a crank F.
The oblique position of the worm wheel A with relation to the centrifugal shaft
is very important, as thereby the driving power actuating the centrifugal shaft is
greater than would otherwise be the case and the end pressure on the shaft is
smaller than if the worm wheel A were in the same plane with the centrifugal shaft
and furthermore, contrary to what is the case with a cylindrical gearing, an end
pressure is obtained sufficient to prevent jerks caused by the longitudinal
displacement of the centrifugal shaft.
According to the drawing the inclination of the worm wheel A with relation to
the centrifugal shaft is about 45°, but this inclination can be varied. A cylindrical
gearing may be added to the gearing of the shaft of the screw wheel if desired.
For example if it should be desired either to augment the rotary speed of the
shaft B or to reduce the number of revolutions of the crank F for a given speed of
the said shaft, the gear can be supplemented by cylindrical gearing placed between
the shaft, on which the crank F must then be applied and the shaft E on which the
conical toothed wheel is placed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. Driving gear for centrifugal apparatus consisting of a screw or worm wheel
engaging in a screw or worm on the centrifugal shaft and located in a plane
cutting the centrifugal shaft obliquely and operated through the medium of
suitable gearing whereby the force acting upon the centrifugal shaft may be
comparatively great and a certain amount of end pressure obtained to ensure a
uniform working, substantially as described.

page_text: 2. The improved driving. mechanism for centrifugal machines constructed and
arranged, substantially as hereinbefore described and illustrated in the accom-
panying drawing.
Dated the 24th day of November 1893.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.