Improvements in the Driving Gear of Roller Mills.
Year: 1899

page_text: Date of Application, 11th Aug., 1899-Accepted, 16th Sept., 1899
66
COMPLETE SPECIFICATION.
Improvements in the Driving Gear of Roller Mills.
I, HERMANN KIBBEL, of Kibbel's House, Syromjetniki, Moscow, Russia, Mer-
chant, 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:-
In the case of all rollers in use in flour and other mills, chocolate, soap and
other factories, the motive power is transmitted to the rollers by means of cog-
wheels. But this arrangement is subject to a number of disadvantages.
In consequence of the constantly varying distances of the rollers from each
other, more especially in all branches of manufacture dealing with coarse and
unequally sized grains, the gearing into each other of the cog wheels, which are
constructed for a fixed diameter of pitch-circle, is in most cases irregular and
gives rise to rapid wear of the teeth even if the latter are constructed so as to
permit a slight displacement of their axis of revolution. Moreover, after the
rollers have been turned down repeatedly it will become necessary to exchange
the old cogwheels for new ones of a lesser diameter; this may possibly require
to be done more than once, and is both tedious and expensive. All these dis-
advantages are obviated by the present invention. In place of gearings, a chain-
driving arrangement, no matter on what system, applied.
By way of an example, this system of driving is illustrated, in the case of a
three-roller machine, in the annexed drawing, where
Fig. 1 is a side elevation.
Fig. 2 is a front elevation.
"
The motive power is communicated to the shaft or spindle a by the pulley b,
and is transmitted thence, by means of a
"Gall's endless chain g, to the
pressure roller (which can be adjusted) and further, with the interposition
of a guide-spindle d to the "grinding" roller e (also capable of being adjusted)
by chain-wheels fixed on the spindles and which are dimensioned in accordance
with the intended speed of revolution, while the motion of the pressure-roller f
(which revolves in the opposite direction and runs in fixed bearings) is likewise
imparted by a similar chain h from the guide-spindle d. The three rollers are
in this instance driven, irrespectively of the variable distances of their spindles,
so as to maintain a normal gearing into each other, of the chain-wheels and
chain, and the diameter r of the rollers may be reduced until the two central
lengths of chain passing over the spindle d almost touch each other.
In the case of machines with a larger or lesser number of rollers, or a different
arrangement and position of the roller bearings the arrangement of the chains
may of course be suitably modified, but it is always arranged so as to permit
any rollers to be shifted if required, without interfering with their free rotation,
that is to say, so that the chains may always cover about one half, or more,
of the periphery of the respective chain-wheels of the parts of machinery to be
driven.

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:-
"
"
وو
In roller-frames with adjustable pressure' or "grinding rollers, an
arrangement for driving these, or all the existing rollers, by means of endless
chains of any system, carried over chain-wheels on the shafts or spindles, if
necessary with the interposition of guide-spindles, so that the chains may always
cover about one-half or more of the peripheries of the chain-wheels of the
adjustable rollers, and permit an adjustment of the position of the rollers thus
driven, without impairing their free rotation.
Dated this 10th day of August 1899.
J. E. EVANS-JACKSON & Co.,
Agents for the Applicant.