IMPROVEMENTS IN MACHINES FOR CRUSHING BREAKING OR GRINDING STONE AND OTHER MATERIALS
Year: 1883

page_text: LETTERS PATENT to Samuel Mason of Leicester in the county of Leicester
"
for an Invention of IMPROVEMENTS IN MACHINES FOR CRUSHING BREAKING
OR GRINDING STONE AND OTHER MATERIALS
"
PROVISIONAL SPECIFICATION left by the said Samuel Mason at the Office
of the Commissioners of Patents on the 10th May 1883.
SAMUEL MASON of Leicester in the county of Leicester
IN MACHINES FOR CRUSHING, BREAKING OR
MATERIALS"
"IMPROVEMENTS
GRINDING STONES AND OTHER
Upon a shaft preferably vertical is a conical crusher head surrounded by a
cylindrical Jam which may however be tapered if required; both head and Jam are
fluted in any required manner or direction. The shaft is journalled eccentrically
which gives a gyrating motion to the crusher head; or the hole in the head may
be out of the centre so as to produce the same effect-the eccentric motion may
be produced either at top or bottom. The lower end of the shaft rests in a
footstep and a pan and edge runners may be so placed as to take the rough
material from the crusher and reduce it to powder Either the pan or the runners
are driven from the shaft which is itself driven from either top or bottom by
bevel gearing or in other suitable manner. Suitable frame, bearings and hopper
are provided. The form of the head and outer Jam may be varied and the head
need not always revolve with its shaft though generally this is preferable. For
example if the head and Jam be made square in cross section it would. not do
for the head to revolve, but it would require to be loose upon the shaft the
crushing force being obtained only by the eccentric motion above described.
In a modified form a suitable framework supports the cylindrical Jam within
which upon an approximately vertical shaft is the crushing head preferably tapered
towards its upper end and circular or of other suitable form in cross section. The
shaft is supported in a bearing at its upper end consisting of a tapered hole in a
cross frame or support and having a cap on top to keep out the dirt &*.
times I form the hole in the bearing block with a double taper the narrowest
portion being at or near the centre. Near the bottom of the machine is a bevel or
Some-

page_text: mitre wheel with a downwardly extending boss terminating in an ordinary
footstep adjustable by set screws if desired.
In the body of the wheel on its upper side is a recess in which a second footstep
which carries the lower end of the crusher shaft; this footstep is adjustable within
the recess and revolves with the wheel so that when set out of the centre it gives
the eccentric motion to the crusher shaft. Both the cylindrical and conical crusher
Jaws are fluted and stones &° are crushed by the eccentric motion imparted to the
crusher shaft as above described. Suitable shoots carry off the stones & when
crushed-The machine may be driven by a bevel pinion upon a horizontal shaft,
gearing with the bevel wheel before mentioned, the horizontal shaft carries a fly
wheel and is driven by belting in the ordinary manner.
The cylindrical jaw may be formed in segments or in one piece, where required
set screws can be provided for raising or lowering the cone.
For driving by horse or similar power a shaft or arm. may be attached to or
connected with the wheel or to the top of the shaft in any convenient manner.
The lower portion of the cylindrical Jam may be spread out and notched and the
cone formed to fit and a spring applied if needed for pulverizing and the like.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Samuel Mason in the Great, Seal Patent Office on the
8th November 1883.
SAMUEL MASON, of Leicester in the County of Leicester
"IMPROVEMENTS
IN MACHINERY FOR CRUSHING, BREAKING OR GRINDING STONES AND OTHER
MATERIALS
"
Upon a shaft, preferably vertical, is a conical crusher-head surrounded by a
cylindrical jaw, which may however be tapered if required, both head and jaw are
fluted in any required manner or direction. The shaft is journalled eccentrically
which gives a gyrating motion to the crusher-head, or the hole in the head may be
out of the centre, so as to produce the same effect, the eccentric motion may be
produced either at top or bottom. The lower end of the shaft rests in a footstep
and a pan and edge-runners may be so placed as to take the rough material from
the crusher and reduce it to powder. Either the pan or the runners are driven
from the shaft which is itself driven from either top or bottom by bevel gearing or
in any other suitable manner. Suitable frame, bearings and hopper are provided.
The form of the head and outer jaw may be varied and the head need not always
revolve with its shaft, though generally this is preferable.. For example if the
head and jaw be made square in cross section it would not do for the head to
revolve, but it would require to be loose upon the shaft, the crushing force being
obtained only by the eccentric motion above described.
In a modified form a suitable frame work supports the cylindrical jaw, within
which upon an approximately vertical shaft is the crusher head, preferably tapered
towards its upper end and circular or of other suitable form in cross section. The
shaft is supported in a bearing at its upper end, consisting of a tapered hole in a
cross frame or support and having a cap on top to keep out the dirt etcetera.
Sometimes I form the hole in the bearing block with a double taper, the narrowest
portion being at or near the centre. Near the bottom of the machine is a bevel or
mitre wheel with a downwardly extending boss terminating in an ordinary
footstep adjustable by set screws if desired.
In the body of the wheel on its upper side, is a recess in which a second footstep,
which carries the lower end of the crusher shaft, this footstep is adjustable within
the recess and revolves with the wheel, so that when set out of the centre it gives
the eccentric motion to the crusher shaft. Both the cylindrical and conical jaws
are fluted and stones etcetera are crushed by the eccentric' motion imparted to the
crusher shaft as above described. Suitable shoots carry off the stones etcetera
when crushed. The machine may be driven by a bevel pinion upon a horizontal
shaft, gearing with the bevel wheel before mentioned, the horizontal shaft carries a
fly wheel and is driven by belting in the ordinary manner.
The cylindrical jaw may be formed in segments or in one piece, where required
set screws can be provided for raising or lowering the cone.
For driving by horse or similar power a shaft or arm may be attached to or
connected with the wheel or to the top of the shaft in any convenient manner.
The lower portion of the cylindrical jaw may be spread out and notched and the
cone formed to fit, and a spring applied if needed for pulverizing and the like...
In the accompanying drawings, in which like letters of reference represent like
parts Fig 1 is an elevation of the complete machine. Fig 2 is a vertical section of
the same, Fig 3 a detail plan of the footstep and Fig 4 a half sectional plan of
the crusher head and jaws,
A is the crusher head, B the cylindrical crusher jaws, and C the upright. shaft
which carries the crusher head. A portion of this shaft within the head is

page_text: preferably squared and the head fitted upon it so as to revolve with the shaft, a
portion of which may be made eccentric as at C¹ so as to give a gyrating
movement to the head A to assist in crushing the stones etcetera, or the shaft C
may be parallel and the hole in the head be formed out of the centre.
The flutings A¹ of the head may be made parallel to the shaft C, as shewn in
Fig 2 or otherwise as desired.
The jaws B may be made in one or more pieces, and fluted as required, they are
secured in any suitable manner to the frame work D.
A collar E upon shaft C carries the bolts F which are screwed through it,
'secured by lock nuts F as shewn. These bolts can be used to raise or lower the
crusher head as may be found desirable, so as to regulate the size of the broken
stones.
The shaft C is driven in any convenient manner as by the bevel gearing G G and
shaft H and its lower end is supported in a footstep I in the bottom of the
framing D. Fig 3 is a plan of this footstep and it will be seen that the step I is
movable in the recess K of the framing D and its position can be varied and it can
also be fixed in any required position by the set screws L which are locked by the
lock-nuts-L. By this means the lower end of shaft C can be thrown out of the
plumb line thereby, throwing the crusher head out of truth and altering the size
of the broken stones.
When it is desired to reduce the stones or other material to a powder the
following arrangement is adopted.
Upon shaft Chelow the crusher head is secured the cross-head M having two or
more arms or shafts N which carry the edge-runners O which revolve in the pan P.
An opening Q is left for the revolving sieve or screen R secured to the top of
shaft S and revolved by the gear wheel T which receives its motion from the large
bevel wheel G as shewn in Fig 2.
The edge runners revolve with the shaft C and reduce the material dropping
from the crusher head to a powder, which is further sifted by the revolving
screen R which rejects the pieces which are too large to pass through its mesh
and casts them back to be re-ground.
The upper bearing is shewn in section at C2 (Fig 2) the lower portion being
tapered to allow for the movement consequent upon the lower end being out of
truth as previously described This bearing can be made with a double cone (as
shewu by the dotted lines) if required.
In operation the stones or other material to be crushed are placed in the
hopper V whence they pass to the space between the crusher-head and crusher
jaws assuming the position shewn in Fig 2. They are then broken up by the
action of the crusher and jaws and drop down to a shoot and carried off in the
usual manner.
When the stones are to be ground as well as broken as in breaking up old
building materials the edge-runners and pan are used and the broken pieces fall
direct from the crusher into the pan where they are ground up, carried by the
scrapers W over the revolving screen R and pass to the shoot X and are carried
away as required.
Having now described my invention and the method of performing the same, I
wish it to be understood that I am aware of the Letters Patent No 1995 dated
7th May 1881 granted to W. R. Lake, and that I do not claim the invention as set
forth in the specification thereto, but what I do claim and desire to protect under
the hereinbefore in part recited Letters Patent is.
-
1. The combination with the revolving crusher head
crushing jaws B substantially as set forth
of the cylindrical
こ
2. The revolving crusher head A to which is imparted an eccentric or gyrating
motion substantially as described.
t
3. The combination with the crusher head A and shaft of the adjustable step I
whereby the position of the crusher head is altered within the jaws B
substantially as set forth. . :
فاداه ..
97

page_text: 4. The combination with the crusher head A and shaft O of the collar E and
adjusting screws F whereby the position of the head upon the shaft may be
altered substantially as set forth.
5. The combination with the shaft C of
(a) the crusher head and jaws A and B and
(b) the edge runners or rolls and pan O and P
whereby a crushing or breaking and a grinding or pulverizing action are
obtained simultaneously in the one machine and large stones or similar articles
placed in the top of the machine pass out at the bottom in the form of powder,
substantially as described and illustrated in the accompanying drawings
6 As a new subordinate part of this invention as described and illustrated, the
revolving screen R substantially as set forth.
In witness whereof I the said Samuel Mason have hereunto set my hand
and seal this second day of November in the year of our Lord, one thousand
eight hundred and eighty three.
SAMUEL MASON, (L.S.)