Improvements in or relating to Apparatus for Crushing Granite, Quartz, Stones, and the like.
Year: 1898

page_text: Date of Application, 17th Oct., 1898
Complete Specification Left. 12th Nov., 1898-Accepted, 17th Dec., 1898
Improvements in or relating to Apparatus for Crushing Granite,
Quartz, Stones, and the like.
We, JAMES EDWARD BROADBENT and JOSEPH BROADBENT, both of Phoenix
Iron Works, Stalybridge, in the County of Chester, Engineers, do hereby declare
the nature of this invention to be as follows:-
This invention relates to the rollers used in apparatus for crushing granite,
quartz, stones, and similar minerals, and to the shafts or axles of such rollers,
the object of the invention being to simplify the construction of such apparatus,
and dispense with large and costly shaft forgings.
The invention consists in providing or forming a shaft square triangular
octagonal or otherwise flat sided at that part of the same which carries the roller,
the said shaft being largest at the centre and tapering towards each end, and
in providing a suitable wedge piece at each end and on each of the sides of
such shaft, the wedges being so inclined as to correspond with the incline on
the side of the shaft and with the surface of a tubular cylinder which forms
the working part of the roller, and made with longitudinal ribs forming recesses
in which the wedges work.
This cylinder is secured in place by a series of bolts each passing through
and connecting the two opposite wedges working on each inclined side on the shaft
or axle.
Further, in order to prevent the possibility of the tubular cylinder sliding
endwise on the wedges, we propose to provide the same with an internal flange
or web or a series of internal projections which will fit between the inner ends
of the opposite wedges, leaving of course sufficient room for the tightening of
the wedges.
The cylinder forming the roll may be in one piece or two or more rings set
side by side.
This arrangement will provide a very inexpensive and efficient means of fitting
the roll on its axle or shaft so that it will not easily wear loose and can be easily
tightened up again if it does wear loose; and as there will be no necessity for
bushes or bosses fitted and cottered on the shafts at the ends of the rolls the
said shafts may be shorter between their bearings and stronger than those now
generally in use.
The axle or shaft may also be made from a square, triangular or other flat
sided bar planed and turned at the required parts and is therefore not expensive
to make.
TELL 1
1000

page_text: Improvements in or relating to Apparatus for Crushing Granite,
Quartz, Stones, and the like.
We, JAMES EDWARD BROADBENT and JOSEPH BROADBENT, both of Phoenix
Iron Works, Stalybridge, in the County of Chester, Engineers, 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 the rollers used in apparatus for crushing granite,
quartz, stones, and similar minerals, and to the shafts or axles of such rollers,
the object of the invention being to simplify the construction of such apparatus,
and dispense with large and costly shaft forgings.
The invention consists in providing or forming a shaft square, triangular,
octagonal or otherwise flat sided at that part of the same which carries the roller,
the said shaft being largest at the centre and tapering towards each end, and
in providing a suitable wedge piece at each end and on each of the sides of
such shaft, the wedges being so inclined as to correspond with the incline on
the side of the shaft and with the surface of a tubular cylinder which forms
the working part of the roller, and is made with longitudinal ribs forming recesses
in which the wedges work.
This cylinder is secured in place by a series of bolts each passing through
and connecting the two opposite wedges working on each inclined side on the shaft
or axle.
Further, in order to prevent the possibility of the tubular cylinder sliding
endwise on the wedges, we propose to provide the same with an internal flange
or web, or a series of internal projections, which will fit between the inner ends
of the opposite wedges, leaving of course sufficient room for the tightening of
the wedges. In some cases the interior of the tubular cylinder may be inclined
and the wedges shaped accordingly on their outer surfaces.
The cylinder forming the roll may be in one piece or two or more rings set
side by side.
The annexed drawings illustrate one way in which our invention may be
carried into practical effect.
Fig. 1 is an end view of a roll for crushing stones made according to this
invention.
Fig. 2 is a longitudinal vertical section through the tubular cylinder and the
wedges. Fig. 3 is a transverse section through about the line A A. on Fig. 2,
two of the wedges being removed, and Fig. 4 is a longitudinal section of a
tubular cylinder detached.
On the drawings a is the axle shown square at a* and tapering from the centre
outwards. On the flat sides a move the wedges b which fit in recesses formed
by ribs in the tubular cylinder_c.
The wedges are drawn together inside the cylinder c by the bolts 6 and
wedge tightly between. the latter and the axle at a³.
If preferred the inner surface of the cylinder c may be slightly tapered from
the centre as well as the axle at a but in the reverse directions the wedges being
formed accordingly as will be readily understood without illustration.
The interior of the cylinder c may be provided between the inner ends of the
wedges with transverse lugs or projections c¹ or their equivalent to prevent the
possibility of the said cylinder slipping or sliding endwise on the wedges.
This arrangement will provide a very inexpensive and efficient means of fitting

page_text: the roll on its axle or shaft so that it will not easily wear loose and can be easily
tightened up again if it does wear loose; and as there will be no necessity for
bushes or bosses fitted and cottered on the shafts at the ends of the rolls the
said shafts may be shorter between their bearings and stronger than those now
generally in use.
The axle or shaft may also be made from a square, triangular or other flat
sided bar planed and turned at the required parts and is therefore not expensive
to make.
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:-
-
1. The combination of an axle made square or otherwise flat sided, the said
axle or shaft being largest in the centre and tapering towards each end at that
part which is to carry the roll, with wedges corresponding with the flat sides,
fitting in the interior of a tubular cylinder forming the crushing roll proper
and tightened inside the latter to fit it on the axle and cause it to revolve there-
with, substantially as hereinbefore described.
2. The combination of an axle made square or otherwise flat sided the said
axle or shaft being largest in the centre tapering towards each end at that part
which is to carry the roll, with wedges corresponding with the flat sides, fitting
in the interior of a tubular cylinder forming the crushing roll proper and
tightened inside the latter to fit it on the axle and cause it to revolve therewith,
the said tubular cylinder being provided with internal transverse lugs or pro-
jections fitting between the opposed wedges or being otherwise equivalently
formed to prevent the same from sliding or slipping endwise on the said wedges,
substantially as hereinbefore described.
Dated this 11th day of Novembar 1908
GEO. DAVIES & SON,
Agents for the Applicants, 4, St. Ann's Square, Manchester.