Improvements in Apparatus for Breaking Stone or other Mineral Substances.
Year: 1895

page_text: Date of Application, 26th Oct., 1895
Complete Specification Left, 25th July, 1896-Accepted, 29th Aug. 1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Breaking Stone or other Mineral
Substances.
I, THOMAS WHITAKER, of Horsforth, near Leeds, in the County of York,
Contractor, do hereby declare the nature of this invention to be as follows:-
The invention is primarily designed to provide a positive return movement to
the movable or oscillating jaw instead of the buffers at present used and to
provide for the adjustment of the jaw to break different sizes whilst the machine
is in motion.
On the cam shaft in addition to the cam which actuates the vibrating jaw I place
an additional cam either double or single acting which engages with a friction
runner or its equivalent carried by a bracket behind the cam shaft.
The main cam may act either direct upon the oscillating jaw or through a
vibrating lever connected therewith by a toggle or other suitable joint.
A bracket is attached either to the back of the oscillating jaw or lever carrying
an anti-friction roller with which the additional cam engages. The position of this
roller is adjustable and it is provided with a buffer of rubber or other material behind
to prevent any jar or sticking when working and to maintain the two cams always
touching so that a positive forward and backward motion ensues.
When the intermediate vibrating lever is employed it is provided with a toggle
joint which can be adjusted by altering the position of the toggle plate to increase
or reduce leverage and to break stones into larger or smaller sizes.
Ι
To adjust the machine (within certain limits) to break different sizes whilst it is
running I provide movable bearings for the vibrating lever controlled by wedges or
inclined planes the connecting rods of which are connected at the back to a right
and left hand nut by turning which the wedges can be simultaneously moved either
inwards or outwards. A set screw or its equivalent may also be applied to each
bearing to secure it firmly when set.
Dated this 25th day of October 1895.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
Improvements in Apparatus for Breaking Stone or other Mineral
Substances.
I, THOMAS WHITAKER, of Horsforth, near Leeds, in the County of York,
Contractor, 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 invention is primarily designed to provide a positive return movement to the
movable or oscillating jaw instead of the buffers at present used and to provide
for the adjustment of the jaw to break different sizes whilst the machine is in
motion

page_text: It will be fully described with reference to the accompanying drawings.
Fig. 1. Side elevation of stone breaking machine.
Fig. 2. Elevation from the back.
Fig. 3. Plan.
Fig. 4. Sectional elevation of parts of the machine.
Fig. 5. Detail (section on line x-y Fig. 1).
On the cam shaft A in addition to the cams B which actuate the oscillating
jaw C I place an additional cam D either double or single acting which
engages with a friction runner E or its equivalent carried by a bracket F behind
the cam shaft.
The invention may be applied to a machine of the type in which the main
cams B act direct upon the oscillating jaw or as shown in the drawings through a
vibrating lever G connected to the oscillating jaw C by a toggle or other suitable
joint H.
A bracket F is attached to the back of the vibrating lever G which carries the
anti-friction rollers E with which the additional cam D engages. This roller E is
mounted in adjustable bearings e which are provided with buffers L of rubber or
other material behind to prevent any jar or sticking when working and to maintain
both sets of cams B and D always in contact so that a positive forward and backward
motion ensues.
In the type of machine in which the cams act direct upon the oscillating jaw C
a bracket similar to F is attached to the back of the jaw to carry the anti-friction
roller E.
When the intermediate vibrating lever G is employed it is provided with a toggle
joint H which can be adjusted by altering the position of the toggle plate to increase
or reduce leverage and to break stones into larger or smaller sizes.
To adjust the machine (within certain limits) to break stones to different sizes
whilst it is running 1 provide movable bearings for the vibrating lever G
controlled by wedges or inclined planes M the connecting rods m of which are
connected at the back to a right and left hand nut m¹ by turning which the wedges
can be simultaneously moved either inwards or outwards. A set screw N or its
equivalent may also be applied to each bearing to secure it firmly when set.
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 stone breaking machine the combination with the oscillating jaw-either
with or without a vibrating lever-of an additional cam such as D and an anti-
friction roller such as E carried by a bracket attached thereto to give a positive
return movement to the jaw substantially as described.
2. In a stone breaking machine the combination with the vibrating lover connected
to the oscillating jaw, of adjustable bearings which can be set or adjusted within
certain limits whilst the machine is running to break stones to different sizes
substantially as described and shown.
3. A stone breaking machine having the different parts constructed and arranged
in combination substantially as described and shown.
Dated this 15th day of July 1896
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.