Improvements in and relating to the Oscillating Supports of Shaking Sieves.
Year: 1896

page_text: Date of Application, 21st Nov., 1896.
Improvements in and relating to the Oscillating Supports of Shaking
Sieves.
1, FRIEDRICH HERMANN SCHULE, of GGA Eilbecker Weg, City of Hamburg,
in the Empire of Germany, Engineer, do hereby declare the nature of this inven-
tion to be as follows:-
The segmental supports for shaking-sieves sorting-apparatus and like arrange-
ments such as described in my British Patent Specification No. 14519/1894, are
provided with springs which are guided in brackets arranged normally to the
rims of the segmental supports and which springs are intended to take the effect
of the concussions produced during the forward and backward movements. These
springs are greatly liable to rupture, because it is impracticable to make them
sufficiently long to permanently resist the rapidly repeated extreme contractions
and extensions. For this reason the apparatus above referred to has been modified
in the following manner.
The brackets provided in the apparatus forming the subject of the above patent
are omitted, and in order to prevent the segmental supports from yielding laterally,
the said brackets are replaced by guide walls or cheeks arranged upon the beams
forming the frame of the apparatus. The spiral springs serving to take the effect
of the concussions are arranged upon horizontal rods or tubes, which lie in the
direction in which the sieve is displaced and are mounted at the sides of the
oscillating sieve supports, constructed in the form of wheel segments, in rigid
supporting blocks arranged upon the beams of the frame.
These rods or tubes are passed through sleeves capable of oscillation and each
located in a fork shaped bracket rigidly connected to a segmental support. Between
each sleeve and the central supporting block a comparatively long spiral spring
is placed around the rod. The rods are either arranged rigidly in the supporting
blocks as before mentioned and loosely in the sleeves or rice versa, that is to say,
they are held rigidly in the sleeves and loosely in the blocks. In the former
case the sleeves are displaced upon the rods which remain stationary when the
segmental supports are moved to and fro; whereas in the latter case the sleeves
carry the rods along with them and these latter are displaced in the supporting
blocks. In each case the springs are alternately contracted and extended and
thus take the force of the concussions produced during the forward and back-
ward movements of the sifting apparatus, without showing the tendency to break,
because by this arrangement they may be made sufficiently long.
1000

page_text: Improvements in and relating to the Oscillating Supports of Shaking
Sieves.
I, FRIEDRICH HERMANN SCHULE, of 66A Eilbecker Weg, City of Hamburg,
in the Empire of Gerniany, Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in. and by the following statement:-
The invention' refers to improvements in and relating to oscillating supports
for shaking sieves, sorting machines, stone, extracting machines, separating
machines and the like; the object being to provide the oscillating supports for
such machines with means adapted to absorb or neutralize in a safe and reliable
imanner the effect of the shocks and concussions produced during the forward
and backward movements and resulting from the operation of the machine; and
with this end in view my invention consists in certain novel features of construc-
tion and combinations of parts, as will be hereinafter fully described.
In the accompanying drawings:
Figure 1 is a side elevation of a grain-separating-machine provided with my
improved oscillating supports.
Figure 2 is a detailed view of one of the oscillating supports drawn to au
enlarged scale;
3.
Figure 3 is a vertical section through Figure 2;
Figures 4 and 5 are similar views to Figure 2, showing the oscillating support
swung out in both its extreme positions respectively.
Figures 6-9 illustrate modifications of the oscillating supports.
Similar letters refer to similar parts throughout the several views.
The to and fro motion is imparted to the machine (Figure 1) designed to receive
a shaking motion by means of a suitable crank device D connected with the
machine frame or body through the medium of a connecting rod D¹.
The shaking machine rests upon four sector-shaped supports pivoted by
means of bolts G¹ to suitable lugs G of the machine body. The supports F are
provided with segmental racks F the teeth of which meshing with the teeth of
racks K fixed to the supporting-frame K¹. Suitable guide walls or checks W
arranged upon the beams K' on one side of each support F prevent the latter
and thereby the whole machine from yielding laterally.
The means for absorbing or neutralizing the shocks or concussions resulting
from the operation of the machine consist of coiled springs L2 carried by horizon-
tal rods or tubes L', which are expediently arranged, between the oscillating
supports F, in rigid supporting blocks or brackets V (Figure 1), firmly attached
to the supporting frame K¹.
The rods or tubes L' are passed through sleeves m having trunnions m' journalled
in sliding blocks m² which are carried by suitable fork shaped brackets M rigidly
connected to the sector-shaped supports 1. Between each sleeve m and the central
bracket V, a comparatively long coiled spring L³ is placed around the rod L¹.
The rods L are either arranged rigidly in the supporting brackets V, as before
mentioned, and loosely or movably in the sleeve m or vice versa, that is to say, they
are held rigidly in the sleeves m or as shown in the modifications Figures 6-9,
they are directly pivoted to lugs m³ of the supports and loosely in the supporting
brackets V. In the former case the sleeves m are displaced upon. the rods L'
which remain stationary when the supports F are oscillated; whereas in the latter
case the sleeves m or the lugs m³ carry the rods L' along with them and these
latter are displaced in the supporting brackets V accordingly. In order to allow

page_text: the displacement of the rods L' in the modification shown by Figures 6 and 7
the bores v of the brackets V have a greater diameter than the rods, so that the
latter are free to be moved up and down horizontally in a vertical plane by the
oscillating supports F. In the modification shown by Figures 8 and 9 where
separate rods L¹ are employed for each support 1', the bores v' of the brackets F
are bell-mouthed on each side in order to avoid edging of the said rods during the dis-
placing and oscillating movements imparted to them by, the oscillating supports F.
In each of the described constructions the springs L2 are alternately compressed
and expanded and thus absorb the force of shocks and concussions resulting from
the operation of the machine, without showing any tendency to break, because
by the above described arrangement the springs may be made sufficiently long.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is:-
1. The hereindescribed means for absorbing the shocks resulting from the
operation of shaking machines for separating materials and for similar purposes,
in its entirety as well as in details and any modification thereof, substantially as
set forth.
2. In shaking machines for sorting, separating and similar purposes the com-
bination of the oscillating supports carrying the machine frame with suitable
springs arranged in the direction of the reciprocating motion of the machine
between the said oscillating supports and suitable abutments or brackets, and
carried by rods or tubes, the latter being arranged rigidly in the brackets and
loosely or movably connected with the oscillating supports or vice versa, substan-
tially as and for the purpose specified.
3000
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.