Improvements in Stone Breaking Machines.
Year: 1892

page_text: Date of Application, 12th Oct., 1892-Accepted, 17th Dec., 1892
COMPLETE SPECIFICATION.
Improvements in Stone Breaking Machines.
1, GEORGE DALTON of Regent Villas Headingley, Leeds in the County of
York, Mechanical 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 aud by the following statement :-
My improvements relate in the first place to the production of a motion on the
moving jaw or jaws of stone breakers, which shall have double the number of
reciprocations to those which are made by the action of the driving shaft direct ;
secondly, to preventative means against accidental destruction of stone breaker
frames by reason of hard substances or metal getting into the mouths of such
machines; thirdly, they consist of improved lubricating arrangements for the
working ends of toggle motions, for stone breakers, and fourthly, of an improved
method of bedding the jaw faces and toggle blocks or wedges of such machines.
In describing the details of my said improvements I refer to the accompanying
sheets of drawings and to the letters and figures marked thereon, the letters
referring to the same part in the different viewa.
Figures 1. 2 and 3 Sheet 1 represent a vertical section, cross section and plan
of a stone breaking machine in which in addition to the ordinary horizontal
toggles (a. a.) provide a pair of vertical toggles (b. b.) which are connected
to the horizontal toggles by means of side links (c. c.) and an upper and lower
cross bar (d. d). Each reciprocation of the connecting rod (e') and its cross-
head (e) produces 3. rising and falling motion of the horizontal toggle ends and
therefore a corresponding motion of the macliine jaw, thus producing two bitos
of the jaw to every revolution of the driving shaft (f). The vertical toggle
ends are lubricated at the top cross bar by holes drilled through the same, at
the ceutre cross head (e) they are lubricated by standing in a cup or groove
provided with a lubricator on the top side of the same, ou the under side by
the oil running through holes from the upper side, and the bottom end of the
toggle is lubricated by an oil well in the cross-frame of the machine. The
horizontal toggles are lubricated by oil cups which are cast on the toggle pads or
cushions and the cups are filled with absorbent material to prevent the oil running
out too rapidly. These oil cups are shewn full size at (a' a') Figure 4 Sheet 1
and their positions on the vertical section Figure 1 Sheet 1 by (a³ a² a' a² a³).
These improved oil cups are applicable to all stone breaker toggles.
The top ends of the links (cc) are guided by the rocking shaft (g) and the
arms (g'g').
For the prevention of breakages of the machine frames by accidental occurrences
of hard substances such as hammer heads or metal in slag getting into the
machine mouth, I place the fly wheels on the driving shaft without keys as
ordinarily, but key on the. driving pulleys and connect them to the flywheels by
means of lugs and bolts (h. h) which are only sufficiently strong to carry the
flywheels in performing their functious in an ordinary way of work, but which
would be sheared off by any sudden shock on the working parts of the machine,
and the flywheels are thus set free to revolve loose on the shaft, or the fly-
wheels may in some cases be keyed on the driving shaft and the pulleys be
carried only by the lugs and bolts which would shear off from any sudden
stoppage, the driving power being thus taken off the machine parts. Figure 5
Sheet 1, is a detail of the arrangement in which the pulley is not keyed on the
shaft, the flywheel being shewn not keyed in Figure 3, Sheet 1, and in the
same figure the second Hywheel is shewn to be carried by small bolts passed

page_text: through a disc which is keyed on the shaft in the same way as the driving
pulley
Figures 1 and 2 Sheet] 2 are a vertical section and cross section of a
stone breaking machine according to my improvements, in which the action
produced on the jaw is the same as that in Sheet 1, but the arrangement
of the parts is different, the vertical toggle working from a cross frame on
the machine to a cross head (i) which is guided by an arm().and rocking
lever and shaft (j). The connecting rod and crank motion from the driving
shaft to the vertical toggle is the same as in Sheet 1.
Figures 1. 2. and 3. Sheet 3. are a vertical section cross section and plan of
a double acting stone breaker according to my improvements. The arrange-
ment consists of jaws as ordinarily which are actuated by a pushing block (k)
of 'triangular or sector form and which in turn is worked by a double acting
lever () which is pivoted in vee shaped or other bearings (1) carried in the
side frames of the machine and adjusted by wedges and screws (1); and the
lever is worked to and fro to give the double pushing motion on the block (k);
by means of a connecting rod (m) and crank (n) from the driving shaft. The
pushing block (k) is by preference housed in a pocket () in the rocking
lever () the said pocket having by preference a flat bottom which bears on a
curved surface on the block (k), the rocking motion of the lever (1) producing
on the block two motions for the jaw from every revolution of the driving
shaft.
Figures 1. 2 and 3. Sheet 4. represent a vertical section, cross section and
plan respectively of a stone breaking machine in which. the action of the jaw is
produced by the rising and falling of the, connecting block (P): and the horizontal
toggles (0.0.) the motion on the connecting block in turn being produced by the
rocking pieces (PP) which by a connecting rod (9) and crank (g) is worked
from the driving shaft as in Sheets 1. 2 and 3., the motion obtained being the
difference in the height of the chords of the angles made by the connecting
block (P) and rocking pieces (PP) in performing their functions. The rocking
pieces, connecting block and connecting rod are in the example shewn, coupled
together by the pin (P). The rocking pieces stand in pockets (P³) formed in
projections from the machine frame, which pockets also serve as oil cups or wells.
Also for preventing the accidental destruction of the frames of stone breakers
aforesaid, I forn the machine end nearest the mouth of the same of a mass of
metal to form an anvil on which the blows from the jaw may break stone with-
out materially imparting the shocks to the frame sides, and these anvil ends as
shown by dotted and, dashed lines at (r. r. r.) Figures 1 and 2 are attached to
the machine 'sides by comparatively light bolts or heavy springs which in either
case would give way when any substance got into the mouth which the machine
could not break. My improvements in bedding the jaw faces (S) and adjusting
pieces (s) of stone breakers consist in machining the bedding surfaces at (3³).
and () and combinedly jointing or filling the bedding surfaces by asbestos,
wood felt or other suitable material in place of metal as ordinarily used.
r:
.
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.-
First. The arrangement of double acting toggles as shown in Figure 1. Sheet 1.
and as described.
Second. The cast-on lubricating cups on the toggle cushions or pads as shewn
in Sheet Figure 1 and Figure 4. and as described.
Third. The mounting and keying of the fly-wheels and pulley and the lugs and
carrying bolts as shewn in Figures 1 and 2 Sheet 1. and as described.
Fourth. The arrangement of double acting toggle motion as shewn in Sheet 2
and as described.
T
3.

page_text: Fifth. The double acting lever motion and pushing block for the jaw as shown
in Figures 1. 2. and 3. Sheet 3. and as described.
Sixth. The rocking pieces and connecting block in combination as shewn in.
Sheet 4 Figures 1. 2 and 3. and as described.
Seventh. The anvil end of the machine and the connections for the same as
shewn in Sheet 4. Figures 1 and 2. and as described.
Eighth. Planing or machining both ends of the machine frame for bedding the
jaw face and toggle block or wedge as shewn and described.
Ninth. The separate use of my said improvements or of any combination of
the same for the purposes named.
1041
JOHN HANDSLEY DALES,.
Agent for the Applicant.
JOHN HANDSLEY DALES,
Agent for the Applicant.