Improvements in Stone Breakers and Ore Orushers.
Year: 1892

page_text: Date of Application, 8th Jan., 1892
Complete Specification Left, 26th Sept., 1892-Accepted. 29th Oct. 1892
PROVISIONAL SPECIFICATION.
Improvements in Stone Breakers and Ore Orushers.
I ROBERT BROADBENT of Phoenix Iron Works Stalybridge in the County of
Chester Machine Maker, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to that class of stone breakers and ore crushers known as
"Blake's" the working part of which consists principally of a swing jaw moved to
and fro by an excentric acting on a "pitman" and "toggles."
In consequence of the extreme pressure to which the upper step in the head of
the pitman and the lower steps in the frame in which the excentric shaft works, in
these machines the steps are liable to excessive wear and also to breakage, and it is
usual to renew the white metal or gun-metal of which these steps are made, by
running the molten metal direct into the recesses formed in the "pitman" head and
in the main frame for that purpose, which is a long and inconvenient process, and is
avoided by the use of my invention.
According to my invention I form a box or casing of steel and into this box or
casing 1 run or cast the molten metal so as to form therein a thick lining or step of
the white or gun metal and I make the recess in the "pitman" head and also the
recesses in the main frame of such a form and size as will just receive the box or
casing of steel with its lining of white or gun metal forming the step.
By making removable steps in this way with a steel casing and keeping a few of
these in reserve, the steps can be renewed at any time without having to stop the
machine for a long time and to run or cast thein in situ as hitherto practised, and
thus time and trouble will be economized, and the old steel casings can be at any
time renewed by melting out or otherwise removing the old worn or broken metal
and running in or casting a fresh lining of the white or gun metal into the steel
boxes or casings.
Dated this 7th day of January 1892
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Stone Breakers and Ore Crushers.
I ROBERT BROADBENT of Phoenix Iron Works Stalybridge in the County of
Chester Machine Maker, 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 that class of stone breakers and ore-crushers known as
"Blakes" the working parts of which consist principally of a swing-jaw moved to
and fro by an excentric acting on a "pitman" and "toggles."
In consequence of the extreme pressure to which the upper step in the head of
the "pitman" and the lower steps in the frame in which the excentric shaft works
are subjected in these machines, the steps are liable to excessive wear and to
breakage and it is usual to renew the white metal or gun metal, of which these
steps are made, by running the molten metal direct into the recesses formed in the
" pitman "head and in the main frame for that purpose, which is a long and
inconvenient process and is avoided by the use of my invention.
The nature of my said invention and the manner in which the same is to be
Price Rd l

page_text: performed or carried into practical effect will be readily understood on reference to
the sheet of drawings hereunto annexed and the following explanation thereof.
"
Fig. 1 is a side elevation of part of the main framing of a " Blakes stone
crusher and Fig. 2 is a similar view of the "pitman" head of the same, showing
the application of my invention thereto.
"
According to my invention I form a removable box or casing a of steel (which is
also shown, detached in end view at Fig. 3 and side elevation at Fig. 4) and into
this box or casing a I run or cast the molten metal so as to form therein a thick
lining or step 6 of the white or gun metal and I make the recess c in the "pitman
head (see Fig. 2) and also the recesses d in the main frame (see Fig. 1) of such a
form and size as will just receive the box or casing a of steel with its lining b of
white or gun metal forming the step.
Fig. 5 is a section (on a smaller scale) of a Blake stone breaker with my invention
shown as applied thereto.
By making removable steps in this way with a steel casing and keeping a few of
these in reserve, the steps can be renewed at any time without having to stop the
machine for a long time and to run or cast them in situ as hitherto practised, and
thus time and trouble will be economized, and the old steel casings can at any time
be renewed by melting out or otherwise removing the old worn or broken metal
and running in or casting a fresh lining of the white or gun metal into the steel
boxes or casings, which can be done at the foundry at any distance from the machine.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The improvements in stone-breakers and ore-crushers consisting in providing the
main frame and pitman head with removable steel boxes or casings into which is
cast a lining of white or gun metal to form the steps in which the excentric shaft
works, substantially as hereinbefore described and illustrated by the drawings
annexed.
Dated this 24th day of September 1200
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.