Improved Means for Automatically Controlling the Devices for Locking Corves in the Cage.
Year: 1894

page_text: Date of Application, 21st Nov., 1894-Accepted, 22nd June, 1895
COMPLETE SPECIFICATION.
Improved Means for Automatically Controlling the Devices for
Locking Corves in the Cage.
I, FRIEDRICH PELZER, of 18 Holländische Str. Dortmund, in the Empire
of Germany, Engineer and Manufacturer, do hereby declare the nature of my
said invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, that is to say :-
It is customary in mines, where cages having several decks or floors are
employed, to arrange the loaded corves or tubs to be drawn up the shaft on a
suitable staging at the bottom of the shaft during the ascending and descending of
the cage, such staging being provided with decks corresponding to those of the
cage; immediately, therefore, the latter rests on the caps, the full corves are
exactly opposite the respective decks of the cage and, after the bolts or pawls
locking the corves in the cage have been released, the loaded corves are pushed on
to their respective decks either mechanically or by hand, the empties being at the
same time forced out on the opposite side of the cage by the loaded corves. Such
releasing and locking of the bolts or pawls by hand, at each changing of the
corves, however, is exceedingly disadvantageous, necessitates the employment of a
considerably greater number of attendants (banksmen, hangers-on etc.) and requires
more space than is otherwise necessary.
The object of my invention, therefore, is to provide a device by means of which
the bolts or pawls preventing the corves from running out of the cage during the
lowering and raising of the latter can be automatically controlled i.e. released or
brought into the locked position respectively at the proper moment; and in order
that the invention may be thoroughly understood, I will now describe same with
reference to the accompanying drawings, in which :-
Fig. 1 is a side elevation,
Fig. 2 an end elevation, and
Fig. 3 a plan view showing the application and arrangement of locking bolts in
connection with the device.
Figs. 4, 5, 6 are like views of an arrangement in which locking pawls are
employed;
Figs. 7-10 are detail views on a larger scale, of the device shown in
Figs. 1-3.
Figs. 11-13 are detail views on a larger scale of the arrangement shown in
Figs. 4-6, showing the different stages of operation of the device.
K (Figs. 3 & 6) is the piston of a cylinder C, into which steam, water under
pressure or compressed air is admitted by means of a suitable valve (not shown in
the drawings). The rod in connection with the piston K is thus forced outwards,
the shafts K, K' connected by the rod S being thus correspondingly operated; the
levers, linked to K, K' participate in this movement and force back the
bolts b, b (Figs. 10, 13) the bell crank levers ', h', pivoted to such bolts being made
to turn on the pivots o, o and to force the bolts r, or the levers h" operating pawls k
respectively into the released or inoperative position. The empty corves or tubs
may now be run out of the cage on the one side, and the complement of full corves
to be drawn up, and which have meanwhile been arranged on a suitable staging
having as many decks as the cape, take their place.
The action of the levers h', on the pawls k will be understood from Figs. 7, 8, 9
and 10; Fig. 8 (to the left) showing the position when the levers h' commence
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page_text: their movement. These levers ' first exert pressure on the levers ", turning on
pivots v, their movements being transmitted to the shaft by the connecting rod s';
the pawls k secured to said shafts are thus raised above the top of the corve,
which latter can then be removed from the cage.
The action of said levers ', ' on the bolts r, r, which is similar to that on the
levers of pawls k, is shown in Figs. 11, 12 and 13, Fig.. 12 (to the left) showing
the bolt as withdrawn by the levers h¹; ", u are guides for the bolts r, r.
The levers, ', however, not only force the bolts r, r, or the pawls k, k into the
inoperative position, but, at the same time, force the wedges k¹, k¹ under the ratchet
pawls s, s, thus raising the latter above the teeth of the rod r¹, (Figs. 7, 10, 11
and 13). The springs f", " then free to act on the rods r¹, force the bolt-like
ends b', ' of the latter into the holes i of lever or bolt r respectively, so that
when the said steam or other pressure on the piston K, which forced the pawls k, k
or the bolts r. r into the inoperative position is cut off, the latter are held in such
open or inoperative position until the bolts, are withdrawn from the holes i, i,
when the springs f, with connecting rods z, immediately force the bolts r or pawls k
into the locked position.
This withdrawal of the bolts 161 from the holes i in the bolts r or levers ¹¹, is
effected by the wheels of the corres in passing out of the cage, forcing down the
noses of the levers n provided with springs and arranged on the pivots of the
pawls s, which latter then engage with the teeth of the rods and thus withdraw
the bolt-like ends of the latter from the holes i.
Immediately the steam or other fluid, admitted as aforementioned into the
cylinder C, is cut off, the shafts K', K' are returned to their original position by.
means of counterweights, springs or other suitable device (not shown in the
drawing). The pressure of levers on bolts b is thus removed and the bell-crank
levers take up their normal position by virtue of the action of their springs f
and at the same time withdraw their wedges k from underneath the pawls.s, thus
allowing the latter to fall into engagement with the teeth of rod r.
The withdrawal of the bolts from the holes i is effected by a series of
movements corresponding to the number of corve-wheels pressing down the
noses n and thus, as each wheel passes over the latter, the bolts 6 of rods r¹ are
withdrawn to a certain extent from the holes i and the springs f" are put under
tension accordingly. The bolts 6 are retained in the respective positions taken up
in the holes i on each wheel passing over the nose n, by the tension of the springf
exerted on the bolts r and levers respectively.
It will be evident therefore that if each deck of the cage carries one corve only,
the bolts 6 must make two movements corresponding to the two depressions of
the noses n, by the back wheel of the empty corve and the front wheel of the full
corve before they are free of the holes i.
If each deck carries two consecutive corves the bolts must not be withdrawn
until four wheels have passed over the noses n, that is the bolt 6' must be of such
length that it does not leave the holes until it has made four movements
corresponding to the four depressions of the noses n by the corve wheels.
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
clain is:
1. Improved means for automatically controlling the devices for locking corves
or, tubs in the cage during the ascending and descending of same in the shaft,
consisting of pawls or bolts mechanically released and automatically locked or
closed at the proper moment, substantially as described and shown in the
drawings.
2. In a device for locking corves or tubs in the cage, a piston (K) operated by
steam, water under pressure, compressed air or the like, shafts (K) connected by
rod (S) levers (4) forcing back bolts (6) and thus causing levers (¹) to bring the
bolts (r) into the inoperative position and to force wedges (k') underneath ratchet

page_text: pawls (s) the latter being thereby raised above the teeth of bars (¹) which latter
are then forced or shot into holes (i) by the springs (f"), substantially as described
and shown in the drawings.
3. A modification of the device for locking corves or tubs in the cage as
described in the foregoing claims, in which the movements of the levers (h¹)
acting on the pivotally connected levers (1) are transmitted to the bolts (v1)
and pawls (k) by the rods (s'), substantially as described and shown in the
drawings.
4. In combination with a device for locking corves or tubs in the cage, as
described in the foregoing claims, levers having nose like projections n and
pawls (s) both subject to the action of springs, such pawls, on the wheels of the
corves forcing down the noses (n), engaging with teeth of rods (r) having bolts 61
and thus withdrawing the latter from the holes i in bolts or the levers "
actuating pawls (k), when springs bring said bolts r and pawls k into the locking
position substantially as described and shown in the drawings.
Dated this 21st da of N100
F. PELZER,
Per W. H. Beck,
115, Cannon Street, London, Agent.