Improvements in Bolting Engines.
Year: 1899

page_text: Date of Application, 14th Aug., 1899-Accepted, 14th Oct., 1899
COMPLETE SPECIFICATION.
Improvements in Bolting Engines.
I, OSWALD MERBETII, of Wünschendorf, Kingdom of Saxony, Empire of
Germany, Manufacturer, do hereby declare the nature of my said invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The present invention relates to bolting engines and consists of the means
herein after described for keeping the sieves clean and preventing the same from
getting stopped up or clogged by the fine flour or meal."
In order to render the present specification more easily intelligible reference
is had to the accompanying drawing in which similar letters of reference denote
similar parts throughout the several views:-
Fig. 1 is a sectional elevation of the device and Fig. 2 a sectional plan of
the same.
The material under treatment enters the casing a at the top and falls on to
the upper sieve b, where it is freed from the husks which pass off at e.
The part
of the material which passes through the sieve b falls on to the baffle or guide
plate d, whence it is fed to the outer edge of the sieve 61 arranged there under
which separates out the grit, the latter being taken off at e¹. Underneath the
sieve a further baffle or guide plate d is mounted which feeds the material to
the opposite end of the silk sieve 62. Another baffle plate is arranged under
this sieve and then another sieve 3 underneath which yet another guide or baffle
plate dis mounted. The materials separated out are guided off at e¹ e² and e³ for
the corresponding sieves.
The object of the present invention is to provide a series of rotary brushes to
keep the sieves 63 and 63 clean and also to transport the flour or meal towards one
or other side of the sieve. These rotary brushes are also moved across the sieves.
The brushes are mounted worm-like on the rolls c c¹, so as to brush the face or
upper surface of the sieves 62 and 63. Transversely of the machine is mounted a
roll f having an endless spiral groove thereon, said roll being rotated by suitable
means from the pulley . The shafts of the upper and lower brush rolls are
coupled by means of gears or chain gearing as at and, as the said rolls are moved
to and fro in the apparatus the same are rotated by means of the sprocket wheels c³
which engage in stationary racks c. The lower of the roll shafts is provided with
a nonrotary pin g which engages in the spiral groove of the roll f and as the
latter is turned the brush rolls will be moved from one side of the sieves to the
other being simultaneously rotated by the engagement of the sprocket wheels in
the racks.
Thus the sieves will be continually cleaned and at the same time the material
being treated will be operated by the slantingly arranged brushes to move from
one side to the other of the sieve as will be evident.
The groove of the roll f is crossed, so that, when the pin g has reached the
end of the roll it will be returned by the form of the groove.
The particular class of gearing employed is immaterial since any sort of gear
wheels may be used to produce the desired result.

page_text: 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: In a bolting engine the combination of brush rolls mounted above the sieves
and means for simultaneously rotating the same and moving them across the said
sieve substantially as described.
2: In a bolting machine the combination of a series of brush rolls having the
brushes mounted slantingly thereon, said brushes being adapted to contact with
the sieves and means for rotating the same and simultaneously moving them
across the sieves substantially as described.
3: In a bolting machine the combination of brush rolls having brushes as
specified said rolls being mounted one above the other, a transverse roll having
a spirally wound returning groove crossed as specified, a non-rotary pin on the
shaft of one of the rolls to engage said groove and gearing to couple the superposed
rolls and impart rotary motion to the same in the manner and for the purpose
substantially as described.
Dated the 14th day of August 1899
MARKS & CLERK,
18, Southampton Buildings, London, W.C., Agents.