Improvements in Apparatus for Breaking Stone and other Mineral Substances.
Year: 1897

page_text: Date of Application, 21st Jan., 1897
Complete Specification Left, 20th Oct., 1837-Accepted, 4th Dec.,
1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Breaking Stone and other Mineral
Substances.
I, THOMAS WHItaker of Horsforth near Leeds in the County of York, Con-
tractor, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved construction or arrangement of the parts
of the machine by which movement is imparted to the crushing jaw in a forward
direction and a positive return movement imparted to it in the opposite direction.
On the fly wheel shaft which is situated in any convenient position behind the
jaws I mount one or two cranks with a connecting arm or rod depending therefrom.
To the lower part or end of this connecting arm I pivot two toggles or links, one
at either side. The front, one of the toggles or links is pivoted to the oscillating jaw
and the other is pivoted to a fixed bracket at the back. This pivot is adjustable to
regulate the length of stroke. The rise and fall of the crank on the fly wheel shaft
lifts and lowers the toggles and causes the jaw to oscillate with a positive back-
wards or return movement giving two strokes of the jaw for each revolution of the
fly wheel. The position of the pin or shaft in the back bracket to which the back
toggle or link is pivoted is adjustable by means of a sliding wedge or its equivalent
working either vertically or horizontally.
In another arrangement where a single stroke only is desirable the fly wheel
may be placed at the bottom to work direct with the crank but I prefer the first
arrangement.
The adjusting motion may be at either end of the machine but at present I
prefer to place it at the back.
The advantages gained by the machine are a double stroke, no springs and a
positive return movement and the breaking action on the material occupies less
time than in the ordinary class of machines.
DL: 10th dow of Ton 1907
WM. P. THOMPSON & Co.
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Breaking Stone and other Mineral
Substances.
I, THOMAS WHITAKER of Horsforth near Leeds, in the County of York, Con-
tractor, do hereby declare the nature of this invention and in what manner the
FD 871
COALF LEID DIET
Improvements in Apparatus for Breaking Stone and other Mineral
Substances.
I, THOMAS WHITAKER of Horsforth near Leeds, in the County of York, Con-
tractor, do hereby declare the nature of this invention and in what manner the
Die R71

page_text: performed, to be particularly described and ascertained in and by the
following statement:-
This invention relates to an improved construction or arrangement of the parts
of a stone breaking or crushing machine, by which movement is imparted to the
crushing jaw in a forward direction, and a positive return movement imparted to
it in the opposite direction.
It will be fully described with reference to the accompanying drawings.
Fig 1 Side elevation, partly in section.
Fig 2 Plan.
Fig 3 Sectional elevation showing a modified construction.
Fig 4 Plan of same.
The framing A, the oscillating or crushing jaw B, and the fast jaw C are of the
ordinary or usual construction.
The shaft D which carries the fly wheel E is situated in any convenient position
behind the oscillating jaw B. I form a crank F at or near the centre of the
shaft D and upon the crank F I place a connecting arm or rod G depending there-
from, and reciprocated at each revolution of the crank.
To the lower end of the arm or rod G I pivot two toggles or links H and K,
extending one towards the back, and the other towards the front of the machine.
The front toggle or link His pivoted to the oscillating jaw B, and the other one K
is pivoted to the framing on a spindle or pivot k. The spindle or pivot k is capable
of adjustment either backwards or forwards to regulate the position of the jaw.
It is moved forward by the inclined wedges L placed behind the bearings M, and
is moved backwards by the screws m. The wedges L are moved backwards and
forwards as required, by the right and left hand screws and nut L¹. The rise
and fall of the crank F on the fly wheel shaft D lifts and lowers the toggles H
and K, and causes the jaw B to oscillate with a positive backwards or return
movement, giving two strokes of the jaw for each revolution of the fly wheel.
In Figs. 3 and 4 an arrangement is shown, when a single stroke only is desired
for each revolution of the fly wheel. The fly wheel E and fly wheel shaft D are
placed at the bottom of the machine, and the crank eccentric F, on the fly wheel
shaft works direct by the link or connecting rod H¹ to oscillate the jaw B to and
fro. The position of the jaw B is adjusted by raising or lowering the wedge L¹,
which is suspended by a screw 7, and by adjusting the spindle or pivot N of the
connecting link H' in its bearings at the back of the jaw by the screws n.
sliding piece h which is inserted in the end of the connecting link H¹ bears at one
end against the wedge L', and at the other end against the spindle or pivot N.
The adjusting motion may be at either end of the machine, but at present I
prefer to arrange it as shown.
The
The advantages gained by the improvements are a double stroke, no springs,
and a positive return movement, and the breaking action on the material occupies
less time than in the ordinary class of machines.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is.
1
1. Apparatus for breaking stone and mineral substances constructed with a
crank or eccentric on the fly wheel shaft, connected by a connecting rod with two
toggles or links, one pivoted to the movable jaw, and the other to a fixed spindle
capable of adjustment, whereby a double stroke and a positive return movement
may be imparted to the oscillating jaw, substantially as described.
2. Apparatus for breaking stones and other mineral substances constructed with
an eccentric or crank on the fly wheel shaft, connected to the oscillating jaw by
an adjustable connecting rod pivoted thereto, whereby a positive return motion is
imparted to the oscillating jaw, substantially as described.
3. Apparatus for breaking stones and other mineral substances having the

page_text: several parts constructed and arranged in combination, substantially as described
and shown either in Figs 1 and 2, or in Figs 3 and 4 of the drawings.
Dated this 14th day of October, 1897.
WM. P. THOMPSON & Co.,
Manchester, Liverpool & London, Patent Agents.