Year: 1887

page_text: Date of Application, 28th Sept., 1887
Complete Specification Left, 28th June, 1888
Complete Specification Accepted, 3rd Aug., 1888
1, WILLIAM HENRY BAXTER of 88 Chapel Town Road, Leeds in the County of
York, Engineer, do hereby declare the nature of this invention to be as follows:-
.
This invention relates to machines for purpose aforesaid of the class wherein there
is employed a central rocking arm or lever, between two toggles, and the object of
the invention is to relieve the centre or axis on which such lever rocks or moves, in a
great measure from the strain and tendancy to slide or move laterially in its bearings,
and whereby the toggles are kept in position without the aid of spiral, india rubber or
other springs to improved appliances for effecting the automatic lubrication of the
toggles, also to an improved means and appliances for securing the rocking jaw shaft,
so as to dispense with the caps heretofore employed.
According to this my invention I apply the toggles to each end of the rocking
lever but at a point below the axis on which the said lever moves or rocks.
From the back of the crusher jaw extends a rod or link, its other end being
connected to a cross-head carried by a bolt on a wood or other slightly elastic
material, to the other end of the cross-head is secured a second link which connects
the lever with the cross-head at a point above the axis thereof, so that as the toggles
give the forward motion to the jaw, the draw back rods above mentioned, transmit the
return motion of the jaw and so dispense with the use of the spiral or other springs
heretofore necessary.
In place of the connecting rods, a chain or rope could be employed for connecting
the jaw and the lever, a pulley over which the chain would be passed, being employed
in place of the cross-head.
For lubricating the toggles I mount at each end of each toggle or above the toggle
bearing, an oil box having an aperture in its end and through which protrudes a wick
of woven or spun material the end of which extends to near the part of contact

page_text: between toggle and bearing, the oil by capilary attraction passing to the required point
there being a guide or channel plate for supporting the wick and guiding the oil
to the required part.
The means of connecting the jaw with its axis is to cast the framing solid, the eye
for the shaft being formed therein and a bed or cotterhole being also provided a
transverse groove or slit being formed in the shaft so that when in position in the
frame, a cotter and bolt secure the whole in position so dispensing with the cap and
bolts heretofore employed for such purposes.
Datad this 97th dox of Cantomlion 1007

page_text: COMPLETE SPECIFICATION.
Improvements in Stone Breaking and Ore Crushing Machines.
I WILLIAM HENRY BAXTER of 88 Chapel Town Road, Leeds in the County of
York, Engineer 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 machines for purpose aforesaid of the class wherein
there is employed a central rocking arm or lever, between two toggles and the object
of the invention is to relieve the centre or axis on which such lever rocks or moves,
in a great measure from the strain, and tendency to slide or move laterally in its
bearings, and whereby the toggles are kept in position without the aid of spiral india
rubber or other springs, to improved appliances for effecting the automatic lubrication
of the toggles, also to an improved means and appliances for securing the rocking jaw
shaft, so as to dispense with the caps heretofore employed.
According to this my invention I apply the toggles to each side of the rocking
lever but at a point below the axis on which the said lever moves or rocks.
From the back of the crusher jaw extends a rod or link, its other end being
connected to a cross-head carried by a bolt on a wood or other slightly elastic
material to the other end of the cross-head is secured a second link which connects
the lever with the cross-head at a point above the axis thereof so that as the
toggles give the forward motion to the jaw, the draw back rods above mentioned,
transmit the return motion of the jaw and so dispense with the use of the spiral or
other springs, heretofore necessary.
In place of the connecting rods, a chain or rope can be employed for connecting the
jaw and the lever, a pulley over which the chain is to be passed, being employed in
place of the cross head.
For Inbricating. the toggles I mount at each end of each toggle or above the toggle
bearing, an oil box, having an aperture in its end, and through which protrudes a
wick of woven or spun material the end of which extends to near the part of contact
between toggle and bearing, the oil by capilary attraction passing to the required
point there being a guide or channel plate for supporting the wick and guiding the
oil to the required part.
The means of connecting the jaw with its axis is to cast the framing solid, the eye
for the shaft being formed therein and a bed or cotter hole being also provided a
transverse groove or slit being formed in the shaft so that when in position in the
frame, a cotter and bolt receive the whole in position so dispensing with the cap and
bolts heretofore employed for such purposes.
Such being the nature and object of this my said invention the following is a
complete description of same, reference being had to the accompanying drawings.
Figure 1, is a side elevation of a stone breaking, or ore crushing machine having
my improvements applied thereto.
Figures 2, and 3 are details of appliances for securing the jaw on its shaft.

page_text: According to this my invention I mount the drawing shaft 1, in bearings of the
frame 2, and to which is secured the connecting rod 3, the outer end of which is
connected to the rocking lever 4 which communicates with the toggles 5. 5 placed in
such a position as to concentrate the pressure on the block 6 in a downward direction
instead of the pressure being upward thus preventing any knocking in case of the
block 6 becoming slack by wear of the slide pieces the lever 4 is supported in the
frame 2 by the shaft 7 which is fitted with a moveable slide piece in order to allow of
regulation by wedge 8 and toggles 5. 5 which by the to and fro movement being
imported to the upper end of, the lever, .4. by means of crank 1 and connecting rod 3
gives the required movement to the jaw 9 by means of the Toggle bearings 10-10
being both placed below the shaft 7 the movement in bearings of shaft 7 is thereby
greatly reduced and, the required movement of-the jaw is obtained by means of
longer or shorter toggles 5. 5 back or front as required to give greater movement to
jaw 91 employ a shorter toggle 5 at the back and longer one at front and vice versa
for reducing the movement of the jaw 9-In these machines as heretofore constructed
the movement of the jaw 9 has always increased as the moving parts became worn
but by this arrangement the movement is automatically controlled-When the jaws 9
are new and sharp more movement is required to break the stone than when they
become worn and by raising the wedge 8 to take up the wear on the jaws 9. the
fulcrum of the lever 4 is reduced thereby reducing the movement of the jaw 9 in the
same ratio hence there is less liability to breakage of the machine and the moving
parts. This same arrangement can be worked from the bottom as ordinary, I therefore
do not limit myself to working the lever 4 in the vertical position.
My improved drawback arrangement comprises a rod 11 and chain 12, chain
pulley 13 and connecting and adjusting arrangement 14 one end of the chain 12
being connected to the lever 4 and the other being connected by rod 11 to the jaw.9
and as the lever 4 is pulled towards the outer end of machine which gives the forward
movement to the jaw 9 the lever 4 allows the chain 12 to move on the pulley 13 and
admits of the forward movement of the jaw 9 and when the lever 4 is moved in the
opposite direction the return motion is accomplished by the lever 4 pulling. the
chain 12 as described in the opposite direction.
For lubricating the toggles 5. 5 I employ an oil box attached above the Toggle
bearings 10 10 which toggles are cast with an angle piece or directing channel 10' so
as to convey the oil into the upper end of the toggles 5—5.
•
For securing the jaw 9 upon its axis I cast the frame 2 solid the eye for the shaft 2
being cast therein and a bed or cotter hole is provided and a transverse groove 2b
being formed in the shaft so that when, in position a cotter and bolt 2 hold the same
securely and dispense with the cap and bolts heretofore employed:
I am aware that stone breakers have been worked by a vertical lever and two
Toggles, the latter were arranged in a horizontal position with shaft 7 to give a
double motion to the jaw 9 to one revolution of the crank 1 whereas my invention
gives only one movement to one revolution of the crank 1 and is arranged as
described to prevent the "Knocking" of Block 6 and preventing in a large measure
the to and fro movement of the slide bosses on shaft 7 beside giving means. of
regulation to the jaw 9'as described.
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
1. The improvements as described in machines for purpose aforesaid wherein is
combined lever 4, and toggles 5, 5, the latter being arranged as shown below centre
of the shaft 7 and inclined towards the block 6 whereby the pressure or thrust is
downwards and constant in one direction avoiding the "Knocking" of the said block
consequent on the use of toggles as heretofore applied.
2. In a machine for purpose aforesaid the employment of pulley. 13 mounted and
adjustable by screw 14, chain and rod 12 in combination with the lever 4 and jaw9,
as herein described and illustrated by annexed drawings..

page_text: 3. The oil box, wick, and directing plate or channel plate 10, applied to and in
combination with the toggles of machines for purpose aforesaid, and as such parts are
herein described and illustrated.
4. The improvements for securing the jaw shaft as herein described, wherein is
employed and combined a solid framing having eye, 2" and cotter hole, a transverse
groove 2 being formed in the shaft, and in which groove the lower edge of the
cotton 2 is received and secured by nuts, thus dispensing with the cap or covering
bands heretofore employed.