Improvements in and connected with Sieves.
Year: 1893

page_text: Date of Application, 14th July, 1893-Accented. 26th Aug., 1893
COMPLETE SPECIFICATION.
Improvements in and connected with Sieves.
I, JOHANNES HEYN, of 6B, Grabowerstrasse, Stettin, in the German Empire,
Civil 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 improvements in sieves and means for cleaning the same,
and consist in mounting such means movably on the frame of the oscillating sieve
and actuating the said means by a driving gear which oscillates with the frame of
the oscillating sieve.
The whole of the mechanism being arranged on the oscillating sieve great
simplicity and reliability in the working of the same is attained.
And in order that my invention may be more fully understood I have caused to
be appended hereunto two sheets of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. 1 is a front view, Fig. 2 a cross section through line A-B of Fig. 1, and
Fig. 3 a longitudinal section through line D-E of Fig. 2.
The sieves s, s, are arranged above each other and surrounded by the casing 9, on
the sides of which are mounted, movably on ribs g', the brush backs e' e'. The
latter are furnished with bristles e, see Figs. 2 & 3, and employed underneath the
sieves 3, side by side on the ribs g' and connected together by means of longitudinal
rods o, which extend through the casing and the rods with the vertical rods t
by means of the horizontal rods t2, as shown in section, in Fig. 3.
2"
The vertical rods are connected with the horizontal rods t³ which are guided
in the bearings, t. On the rods 3 are arranged the rods to connected to the
crank lever of the crank wheel . The latter and the crank lever are mounted
at the bottom of the sieve, as shown in the drawings, the crank wheel, being set
in rotation by means of a strap from the shaft 2. It will thus be seen that the
crank wheel and crank lever oscillate simultaneously with the sieve.
The sieve itself is actuated in the customary manner from the driving shaft a
receiving motion from the counter shaft v. The driving shaft at carries the crank
fly wheel a which engages the crank pin a fixed onto the bottom g² of the sieve
and sets the sieve in motion, the latter being retained in a horizontal or slightly
inclined position, as is well known, by the suspension rods h. n, is the inlet and
n', n, n³, are the outlets for the material.
These well known means can be modified as may be required and not being
claimable need no further explanation.
The features considered as novel are: mounting the means for cleaning the
sieves movable towards and with the oscillating sieve itself and actuating such
means by a driving gear mounted on the frame of the sieve and oscillating with
the same, it being immaterial whether the driving gear, which imparts motion to
the means which effect the cleaning of the sieve, is reciprocatory, intermittent,
rotary, or one-sided.
The drawing annexed represents this invention in its simplest form, a rotary
shaft being mounted on the oscillating sieve frame.
Another important feature of this invention is the employment of the means
which effect the cleaning of the sieve, respectively below each sieve, which does
not impede the travel of the material to be sieved in any way whatever and thereby
renders the constant cleaning of the sieve on one side during the working of the
same possible.
It is evident that the means for cleaning the sieve may be also applied above the
sieve.

page_text: Figs. 4 & 5 show details of a preferable from of brush e which permits of readily
exchanging the same after having become worn, arranged as follows:-
el, Figs. 4 & 5, is the brush back which is fixed to the longitudinal rod o and is
dovetailed in section and adapted to receive the rod e³, also dovetailed in section,
covered with plush and retained therein by frictional contact without special
fastenings.
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-
1st. An oscillating sieve, in which means for cleaning the said sieve are provided
which are mounted movably in the casing of the sieve and are actuated by means
of a driving gear oscillating with the said sieve, substantially as and for the purpose
set forth.
2nd. An oscillating sieve, in which means for cleaning the same are provided
which move towards and are arranged below the sieve to be cleaned and are
mounted movably in the sieve casing and actuated towards the sieve by a driving
gear employed on the oscillating sieve, substantially as and for the purpose set
forth.
Dated this 13th day of July 1893:
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.