Apparatus for Producing Adjustable Shaking Motion.
Year: 1899

page_text: . Date of Application, 10th May, 1899-Accepted, 1st July, 1899.
COMPLETE SPECIFICATION,
Apparatus for Producing Adjustable Shaking Motion.
I, MAX HERZ, of 1, Deutschmeisterplatz No. 2 Vienna, Austria, Doctor of
Medicine, 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:.
―
My invention has for its object, the construction of apparatus whereby a shaking
or vibrating motion such as may be used for a variety of purposes, is obtained by
the centrifugal action of bodies revolving round an axis relatively to which
they are unevenly distributed, while the shaking motion is capable of being regu-
lated by varying the positions of the said bodies.
I will describe the said invention with reference to the accompanying drawing,
which shews variously modified arrangements by which it can be carried into
effect.
Fig. 1 shews an elevation of a shaking device in which a standard which is to
receive vibratory motion carries at its upper end an axis on which are revolved
arms carrying balls or other heavy bodies.
Figs. 2 and 3 shews a suspended shaking device the revolving bodies of which
are formed by excentrics.
Figs. 4 and 5 shew a front view and cross section of a shaking device of the
kind shewn at Figs. 2 and 3 mounted on bars that are to be subjected to vibratory
motion.
In the arrangement shewn at Fig. 1 the standard a carries an axis b with which
revolves the two armed bar c, on which are mounted two balls or other shaped
bodies d and e, of which d is fixed on its arm while e is adjustable on the arm c, and
is secured in the adjusted position by a thumb nut f.
If the two balls d and e are situated at equal distances from the axis b,
which is rotated by a belt and pulley, the centrifugal action of the one ball will
balance that of the other, and the standard a will not be subjected to vibrations.
If however the ball e be shifted on its arm so as to be nearer to the axis than d
the greater centrifugal action of d will impart a vibratory motion to the standard
and this motion is then imparted through a rod g to any apparatus that may
require to have a shaking motion, such as a shaking sieve. It will be seen that
the extent of such vibratory motion can be accurately regulated by adjusting the
position of the ball e relatively to the axis.
In the arrangement at Fig. 2 the axis of rotation b is suspended from arms a
and carries two excentrics and k of which the inner one his fixed to the axis,
while the outer one is rotatable upon the periphery of h, so that it can be
adjusted in varying positions thereon and be secured by a setting screw f. In
the relative position of the two excentrics shewn at Fig. 2, the centre of the outer
one coincides with the centre of the axis b, so that as the masses are equally
distributed round the latter, no vibratory motion will be produced in the suspension
arms a on the axis being rotated by a belt and pulley. If on the other hand,
the outer excentric & be turned on the inner one so that its centre is at a greater

page_text: or less distance from the axis b, as shewn at Fig. 3, the centrifugal action of the
excentrics will produce a greater or less vibratory motion in the arms a.
In the modification of this construction shewn at Figs. 4 and 5, the axis b with
the excentrics h, k, is mounted in brackets a fixed to wooden or metal bars m
carried on supports 7, so that the vibratory motion produced by the excentrics as
above described is imparted in a vertical direction to the bar m, to be utilised for
any desired purpose.
In this arrangement the construction shewn at Fig. 1 might of course be sub-
stituted for the excentrics.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what
I claim is:-
1. Apparatus for producing adjustable shaking motion consisting of heavy
bodies mounted upon a revolving axis in such manner that the centrifugal action
of such bodies is made to impart a greater or less shaking motion to the supports.
of the axis by adjusting the position of one or more of such bodies relatively to
the axis, substantially as described.
2. Apparatus for producing adjustable shaking motion combined and operating
substantially as herein described with reference to the drawings.
Dated this 10th day of May. 1899.
ABEL & IMRAY,
Agents for the Applicant.