Improvements in Crushing Machines.
Year: 1891

page_text: Date of Application, 20th Jan., 1891
Complete Specification Left, 1st Sept., 1891-Accepted, 3rd Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Crushing Machines.
I, EUGEN VILLEROY of Schramberg in the Kingdom of Württemburg,
Germany Manufacturer do hereby declare the nature of this invention to be as
follows:-
This invention consists in improvements in crushing machines.
In the improved machine a movable crushing block pivoted at its upper end is
caused to oscillate at its lower end and is located between two stationary crushing
walls so that the spaces left on each side of the crushing block are of decreasing
width towards the bottom this being preferably attained by making the crushing
block of increasing thickness and arranging the crushing walls closer together
below than above.
The block is caused to oscillate by an excentric wrist or crank on the main
shaft.
To prevent specially hard material not intended to be crushed, from injuring
expensive parts of the machine, the excentric aforesaid works between faces con-
nected to the main body of the crushing block by steel or other plates suitably
inserted so that the advent of any specially hard material into the crusher will
cause the said plates to bend and enable the shaft to continue its movement
without action on the crushing block. By making the aforesaid plates of suitable
strength therefore the remainder of the apparatus may be saved from damage.
Dated this 20th day of January 1891.
TIM
A
HERBERT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements in Crushing Machines.
I, EUGEN VILLEROY, of Schramberg in the Kingdom of Württemburg,
Germany, Manufacturer, 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 :-
The object of this invention is to increase the output and bring about a better
balancing of the pressure in the action of crushing machines; a further object is
to construct the machine so that the advent of any especially hard body into the
machine beyond the crushing capacity of the latter may not result in the breaking
of any expensive part of such machine.
Between two opposed parallel or inclined crushing walls is pivoted a rocking
block or pair of blocks whose opposite faces are thus opposed to the two crushing
walls respectively. The inclination of the walls and of the faces of the block or
pair of blocks is such that the space between each wall and the crushing face
opposed to it is narrower at the bottom than at the top.
The block or pair of blocks is caused to oscillate by an excentric wrist or crank
on the main shaft revolving between faces thereon.
To prevent specially hard material not intended to be crushed from injuring
expensive parts of the machine, the excentric aforesaid works between faces con-
nected to the main body of the crushing block by steel or other plates suitably
inserted so that the advent of any specially hard material into the crusher will
D11]

page_text: cause the said plates-to bend and enable the shaft to continue its rotary movement
without action on the crushing block. By making the aforesaid plates of suitable
strength therefore the remainder of the apparatus may be saved from damage.
In the drawings
Fig. 1 is a vertical section through the crushing block and
Fig. 2 is a horizontal section thereof showing the inserted steel plates.
Fig. 3 is a vertical section without these safety plates.
Fig. 4 is an enlarged view of the construction for adjustment of the bearings of
the crushing block.
Fig. 5 is a vertical section of the whole machine.
Fig. 6 is a similar view of a modified construction.
Fig. 7 is a half elevation, half longitudinal section through the centre plane of
this machine.
Fig. 8 is a sectional plan thereof.
Referring to Fig. 5 it will be seen that the crushing-block B swings between
inclined walls w located opposite to one another, the crushing-block being suspended
to swing on the shaft a. It operates during its swinging action to press and crush
the material to be broken alternately against the one or other wall.
The to-and-fro motion of the crushing-block is caused by the rotation of the
shaft c which is journalled in two bearings below the axis x. Said shaft has at
each end an excentric c¹ which are covered with the steel-rings d to rotate thereon
in order to minimise the friction as much as possible.
The crushing-block has in its lower part a recess e within which is fastened on
each side a steel facing and f¹ corresponding to the steel-rings d d. The distance
between the steel-facings corresponds to the outer diameter of the steel-rings d d
arranged on the shaft c. During the rotation of the shaft c an oscillating motion
is given to the crushing-block by the action of the excentrics.
The steel-facings f and f' are not in close contact with, the inner walls of the
crushing-block (Fig. 2) between the one and the other are the safety-plates g which
rest edgeways, inserted in slot-holes in the crushing-block and are of the corre⚫
sponding strength to withstand the pressure of the material to be crushed. If any
extra hard body, which might be detrimental to the machine, enters the latter the
safety-plates g will bend; so that the excentric can continue to rotate without
moving the crushing-block. To put the machine again into proper working order
the safety-plate is bent straight again or replaced by a new one.
The machine can be adjusted to be narrower or wider at option to produce more
or less fine products. For this purpose the bearing-blocks are guided in vertical
ways in the supports h on each side each having three adjusting screws, the outer
screws sands of which engage in female-screws in the bearings l, whilst the
central screw moves in female threads s in the support and rests against the upper
face of the bearing-block. The crushing-block may thus be raised or lowered,
consequently the interval between the faces of said block and the stationary walls
may be diminished or increased.
By grooving the faces of the
The crushing-block may be easily removed.
crushing-walls and block the working may be improved.
In the construction shown in Figs. 6 to 8 the cross-beam l¹ may be moved up
and down in guide-ways in the standards and fixed by nuts and screws ss in the
desired position. On the beam are the two bearers m carrying the shafts xx in
which the two crushers B B' are respectively suspended. The excentrics c¹ with
their rings d work between the steel-facings ff on the back of the lower part of
each crusher, the shaft c lying in the space between the crushers equivalent to the
recess e in the single undivided crushing-block. The two crushers are connected
below by rods n so as to move together.
The adjustment for different grades of crushing may here be made either by
lifting the beam or by changing the excentrics or steel-rings on the shaft cand
adjusting the rods n.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. In a crushing machine the combination with a pair of opposed stationary
crushing walls of an oscillating double faced or pair of crushing-head crushers
pivoted above and oscillated between the walls by rotary excentrics engaging in a
slot or space e in the block or between the faces of said crushers.
2. In a crushing machine the insertion between the crushing block and its
operating excentric of safety-plates 9 set edgeways to transmit the power to the
crushing-block, the said safety-plates g being adapted to bend or give away upon
excessive resistance arising between the crushing faces, so that the excentrics may
continue to revolve without action on the crushing-block.
Dated this 1st day of September 1891
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents for the Applicant.