IMPROVEMENTS IN STONE BREAKING AND CRUSHING MACHINES
Year: 1884

page_text: I WILLIAM HENRY BAXTER, of 12 Albion Street, Leeds, in the County of York,
Engineer, do hereby declare the nature of my said invention for "IMPROVEMENTS
IN STONE BREAKING AND CRUSHING MACHINES" to be as follows:-
This invention consists of an improved construction, combination, and arrange-
ment of apparatus for actuating the crusher or movable jaw, for compensating for
wear and tear, of the crushing surfaces, of the movable, and fixed jaws, an equal
distribution of pressure upon the bearings of the eccentric shaft, and for securing
the receding or return motion of the movable jaw, without the use of springs as
heretofore, to improved reversible parts, of the stationary or the movable crusher
plates, and to improved angled plate, for the upper portion of the fixed jaw, to
secure finer crushing, or granulation, without readjustment of the movement of the
swinging jaw.
The movable jaw, I swing from a fixed axis or centre, the driving shaft I mount
behind the movable jaw, and upon such shaft, is or are one or more rocking double
arms, one arm extends to near the back of the movable jaw, and is a little below
a horizontal line, its other arm being below the driving shaft. and nearly in a
vertical position-The said arms, by means of an eccentric or eccentrics, on the
driving shaft, have a rocking motion imparted thereto, so that the first arm referred
to, by its end, or a short piece projecting therefrom, and extending to the back
of the movable jaw, imparts to the latter, its forward or crushing motion, whilst
the second or vertical arm, when making its return movement operates or pulls at
an adjustable screw rod, connected therewith and with the back of the movable
crusher jaw, whereby the latter is drawn back without the aid of springs-I cut
away the framing or otherwise provide space for the reception, and working of
screw wedges, applied behind, or in connection with the driving shaft, and its
brasses or bearings, so that by the said screw wedges, I can move and adjust the
position of the driving shaft, and the operating arms, above referred to, in relation
to the movable jaw, whereby the motion of the latter, is regulated and compensation,
for wear of the faces and parts, is provided.
The lower portion of the stationary jaw, I construct in such manner, as to have
reverse or double angled surfaces, so that the said portion of the jaw, may be
removed and reversed, whereon its working surface is practically as when new, the
said portion of jaw may be constructed in one, two, or more pieces, so as to be

page_text: used as a double or greater inclined and efficient Cubing appliance, by this
arrangement, of making the jaw in sections, the longer inclines, may be put to the
bottom, and thereby used as a Crushing jaw, this reversible or double or more
inclined jaw, reduces the Crushing surface, and thereby causes less waste, and
produces a better Cubical sample of Macadam, or
The same arrangement may be applied to the movable jaw.
The upper face of the fixed jaw, I form of an angle, or angled plate, or plates, so
that when the latter is applied, there is less movement and space between the
fixed, and swinging or movable jaw, thereby securing finer crushing or granulating
action of the jaws, without necessity of alteration of the adjustment, of the parts
of the machine, whilst the extra incline or inclines (by reason of the angles) given
to a portion of the jaw, causes the material under operation, to rebound and so
changing its position, and surface, exposed to the action of the crushing jaws
producing better (cubical) results, and less waste.

page_text: COMPLETE SPECIFICATION.
Improvements in Stone Breaking and Crushing Machines.
I WILLIAM HENRY BAXTER of 12 Albion Street, Leeds, in the County of York,
Engineer, do hereby declare the nature of my said invention for "IMPROVEMENTS
IN STONE BREAKING AND CRUSHING MACHINES" and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
This invention consists of an improved construction, combination, and arrange-
ment of apparatus for actuating the crusher or movable jaw, for compensating for
wear and tear, of the crushing surfaces, of the movable and fixed jaws, an equal
distribution of pressure upon the bearings of the eccentric shaft and for securing
the receding or return motion of the movable jaw, without the use of springs as
heretofore to improved revesible parts, of the stationary or the movable crusher
plates, and to improved angled plate, for the upper portion of the fixed jaw, to
secure finer crushing, or granulation, without readjustment of the movement of the
swinging jaw.
Such being the nature and object of my said invention, the following is a
complete description of same, reference being had to the accompanying drawings
forming a part of this specification, in which :-
Fig. 1 is a side elevation partly in section of my improved machinery for purpose
aforesaid.
Fig. 2 is a plan view of a part detached.
The several Figs. on Sheet 2 are sections of the double angled crushing and
stationary jaws.
The movable jaw 1, I swing from a fixed axis or centre 2, the driving shaft 3,
I mount behind the movable jaw and upon such shaft, is or are one or more
rocking double arms 4, 5, the arm 4 extends to near the back of the movable jaw 1,
and is a little below the horizontal line, its other arm 5, being below the driving
shaft 3 and nearly in a vertical position-The said arms 4, 5, by means of an
eccentric or eccentrics 6, on the driving shaft, have a rocking motion imparted
thereto so that the first arm 4 referred to, by its end or a short piece projecting
therefrom, and extending to the back of the movable jaw 1, imparts to the latter,
its forward or crushing motion, whilst the second or vertical arm 5 when making
its return movement operates or pulls at an adjustable screw rod 7 connected to a
plate 8 bolted to the back of the movable crusher jaw, see detail Fig. 2, whereby
the latter is drawn back without the aid of strong compressing springs as
heretofore The expansion of the india rubber washer 11 being sufficient for taking
up slack should the bolts 12, 12, become loose-I cut away the framing or other-
wise provide space for the reception and working of screw wedges 9 applied
behind or in connection with the driving shaft, and its brasses or bearings 10, so
that by the said screw wedges 9 I can move and adjust the position of the driving
shaft and the operating arms above referred to, in relation to the movable jaw,
whereby the latter is regulated, and compensation for wear of the faces and parts
is provided.

page_text: The lower portion of the stationary jaw I construct in such manner as to have
reverse or double angled surfaces 11, 12, as shewn by Figs. on sheet 2 of the
drawings so that the said portion of the jaw may be removed and reversed,
whereon its working surface is practically as when new, the said portion of jaw
may be constructed in one, two, or more pieces, so as to be used as a double or
greater inclined and efficient cubing appliance, by this arrangement, of making
the jaw in sections, the longer inclines may be put to the bottom and thereby used
as a crushing jaw, this reversible or double or more inclined jaw reduces the
crushing surface, and thereby causes less waste, and produces a better cubical
sample of macadam, or
The same arrangement may be applied to the movable jaw.
The faces 13 of the fixed jaw 14 and also of the movable jaw 15 I form of
angled plates, so that there is less" movement and space between the fixed jaw 14
and swinging or movable jaw 15, (in such case the lower jaws do not operate),
thereby securing the finer crushing or granulating action of the jaws, without
necessity of alteration of the adjustment of the parts of the machine whilst the
extra incline or inclines (by reason of the angles) given to a portion of the jaw,
causes the material under operation, to rebound and so changing its position, and
surface, exposed to the action of the crushing jaws producing better (cubical)
results, and less waste.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I would have it
understood that I lay no claim to the use of jaws having single inclines, but
I declare that what do claim is
1. In machines for purposes aforesaid wherein the operating eccentric is at the
back of the movable jaw, the arms 4, 5, connecting rod 7, for advancing and
drawing back the jaw all in combination and as herein described and illustrated
by drawings annexed.
2. Jaws for machines for purpose aforesaid having double inclined or double
angled surfaces and reversible as described and as illustrated by drawings annexed.
3. The construction of upper "fixed" reversible inovable jaw as illustrated by
Fig. 2, and for purpose herein fully described.
4. The adjusting wedge 9 in combination with the parts 3, 4, 5, 6, and 10, for
purpose herein fully described.
: