Improvements in Ice-crushing Apparatus.
Year: 1899

page_text: Improvements in Ice-crushing Apparatus.
We, EDWARD SIDNEY PYCRAFT and EDMUND ALFRED DURRANT, both of Great
Yarmouth, in the County of Suffolk, Merchants, do hereby declare the nature
of this invention to be as follows:-
-
This invention relates to improvements in ice-crushing apparatus, and consists
in so fashioning the teeth of ice-crushing machines, that the ice passing through
the rollers of the machine will be crushed with much greater ease than heretofore,
while at the same time, the teeth will be possessed of considerably greater
strength than the teeth at present in use and will be prevented from becoming
loose or displaced during wear.
In carrying our invention into practical effect, we fashion the steel teeth of
an ice-crushing machine of straight form, and screw or otherwise fix such teeth
upon the crushing rollers diagonally, so that such teeth radiate from the rollers
in an oblique direction.
By this means we dispense with the necessity of curving the teeth, as hereto-
fore was the practice, and thereby obtain far superior results than could be
obtained from such curved teeth.
In practice, it has been found that the employment of curved teeth possessed
many disadvantages, chief among which was the liability of the points of the teeth
to break off, owing to the weakening of the steel at the points of curvature.
We arrange our teeth upon the crushing rollers at any suitable angle to the
surface of such rollers, so long as one side of each tooth forms an acute angle
with the periphery of the roller, while the opposite side constitutes an obtuse
angle therewith.
Dated this 24th day of August 1899
HUGHES & YOUNG,
55 & 56, Chancery Lane, London, W.C.,
Agents for Applicants.
We, EDWARD SIDNEY PYCRAFT and EDMUND ALFRED DURRANT, both of Great
Yarmouth, in the County of Suffolk, Merchants, do hereby declare the nature
of this invention and in what manner the same is to be performed to be particu-
larly described and ascertained in and by the following statement:-
-
This invention relates to improvements in ice-crushing apparatus and has for
object to so fashion the teeth of ice-crushing machines that the ice passing
ID 077

page_text: through rollers of the machine will be crushed with much greater ease than
heretofore, while at the same time the teeth will be possessed of considerably
greater strength than the teeth at present in use and will be prevented from
becoming loose or displaced during wear.
In carrying our invention into practical effect, we fashion the steel teeth of
an ice-crushing machine, of straight form, and screw or otherwise fix such teeth
upon the crushing rollers diagonally, so that such teeth, radiate from the rollers
in an oblique direction.
By this means we dispense with the necessity of curving the teeth, as hereto-
fore was the practice, and thereby obtain far superior results than could be
btained from such curved teeth.
In practice, it has been found that the employment of curved teeth possessed
many disadvantages, chief among which was the liability of the points of the teeth
to break off, owing to the weakening of the steel at the point of curvature.
We arrange our teeth upon the crushing rollers at any suitable angle to the
surface of such rollers, so long as one side of each tooth forms an acute angle
with the periphery of the roller while the opposite side constitutes an obtuse
angle therewith.
In order that this our said invention may be the more readily understood
and carried into practical effect, reference is hereby made to the accompanying
sheet of illustrative drawings, wherein:-
Fig. 1 is a side view of a tooth of an ice-crushing machine, made in accordance
with this invention, and
Fig. 2 a view, partly in section of a crushing roller provided with our improved
form of teeth.
In the drawings, wherein like letters of reference indicate corresponding parts
throughout both figures, a represents one of the usual rollers employed in ice-
crushing machines, such roller being provided with a number of the teeth b
particularly illustrated by Fig. 1.
Each of said teeth is given a straight instead of a curved form as formerly
was the case, the forward end of the tooth being reduced to a point, as at 6' while
the rear end or butt, which is of greater width and depth than the other part of
the tooth, is preferably screw-threaded as at 62
The teeth, constructed in the foregoing manner are screwed or otherwise fixed
into the periphery of the crushing rollers in a diagonal manner, whereby they
project from such rollers in an oblique direction therefrom the one side of each
tooth forming an acute angle with the periphery of the roller, while the opposite
side constitutes an obtuse angle therewith.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:
-
The improvements in ice-crushing apparatus consisting in forming the teeth
of the crushing-rollers of straight form and fixing such teeth in the said crushing-
rollers in a diagonal manner, whereby one side of each tooth forms an acute
angle with the periphery of the roller while the opposite side forms an obtuse
angle with the periphery of said roller, substantially as and for the purpose
herein before described and as illustrated by the drawings.
Dated this 24th day of May 1900.
HUGHES & YOUNG,
55 & 56, Chancery Lane, London, W.C.,
Agents.