January 30, 1914.

THE COLLIERY GUARDIAN.

265

top of the shoot S is secured a turned grooved steel ring,
made in two parts, R and R\ the upper part being riveted
to the shoot, and the lower or retaining ring secured by-
screwed rivets or screws to permit of its removal if required.
The action is as follows: With the handles in the locked
positions H, H, a bag is hung by its beckets or handies from
the cranks C, C. Coal or other material is run into it
through the receiver and shoot until the bag is filled. The
handles are then moved into the unlocking position L, L,
when the weight of the bag pulls down the cranks until the
bag slips off, and the released cranks are thrown back into
their former position by the coiled steel springs K, K; the
handles are then moved back into the locking position H, H,
bringing the moving ring over the projections E, E, and
locking the cranks for the next bag. (One claim.)

7427 (1913). Improvements in and relating to the Regula-
tion of Turbines and other Steam Engines from which Steam is
Diverted at an Intermediate Stage. Vereinigte Dampftur-
binen - Gesellschaft m.b.H., 8-12, Rotherstrasse, Berlin,
Germany.—Relates to turbines and other steam engines
from which steam is diverted at an intermediate stage, and
has for its object to provide an improved system of regula-
tion therefor. According to the invention there is

simultaneous adjustment of the low-pressure inlet valve
and the sleeve load of the speed governor, which controls
the high-pressure inlet valve, in accordance with the
pressure prevailing at the point of diversion without
altering the speed of the turbine. The accompanying
drawing illustrates the invention diagrammatically, the
regulating mechanism being designed according to the
invention, without the employment of a servo-motor. (Five
claims )

7913 (1913.) Improvements in Pedestal Bearings for Colliery
Corves or other Vehicles. J. H. Potter, 229, Abbeyfield-road,
Pitsmoor, Sheffield, F. C. Moorwood, 46, Whirlowdale-road,
Millhouses, Sheffield, and J. A. Potter, 7, Chatham-street,
Rotherham.—A pedestal of the self-lubricating detachable
kind of such construction that being made in one piece,
will retain the wheels and axle in position on corve, but
each axle may be taken out by detaching one pedestal
only. Fig. 1 shows front elevation with hollow boss; fig. 2
side elevation; fig. 3 plan showing box section of body and
diagonal slot across across crown of bearing. The body of
pedestal B is of hollow-box section, a slot S being formed
through crown of bearing diagonally to its centre line and
larger than diameter of axle at its terminals, eo that a space

is left between axle and pedestal body through which the
surplus grease is carried by the revolving axle and is taken
up by the fibrous absorbent placed in the hollow body B
and diagonal slot S, and as the fibrous absorbent becomes
saturated and is in contact with axle it keeps same
lubricated for longer periods, so that economy in lubricant
is effected and not so many lubricators are required about
the system. The hollow boss A cast on one side of pedestal
concentric to centre line of bearing and slotted on its
bottom side to just pass over axle, forms a receptable for
boss of wheel or collar on axle, which being larger than
diameter of axle retains it in position when pedestals are
secured to corves by bolts in the ordinary way. (One
claim.)

13463 (1913). Improvements in Hoisting Buckets. E. E.
Brosius, Machesney-buildings, Fourth-avenue, Pittsburgh,
Allegheny County, Pennsylvania, U.S.A. — Relates to
hoisting buckets of the kind comprising a central lifting
shaft from which are swung two bucket sections pivotally
connected to said shaft at their upper inner corners, and
operating link members pivotally connected with the upper
outer corners of the bucket sections. An important feature
is a construction in which the link members on one bucket
section terminate in rigid laterally or horizontally bent
portions to which the upper ends of the link members on
the other section are pivotally connected at one side of the
vertical centre of the bucket. Another advantage of the
bent construction of the operating link members is that the
same leverage is obtained as if the link members were
extended straight upwardly and pivoted at a point where

their converging centre lines would meet. Another feature
is that the link members in question are arranged to form
an open frame at the top of the bucket whereby the entire
movement of the lifting-hook block necessary to operate
the bucket is made very short, allowing the bucket to be
operated under low cranes as in foundries and other low

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buildings. The bucket is simple and durable in its construc-
tion, and it is capable of exerting a powerful digging action
in closing. Fig. 1 is a side elevation of a hoisting bucket
embodying the invention ; fig. 2 is an end view; fig. 3 is a
detail sectional view, showing certain of the parts; figs. 4
and 5 are detail views. (Six claims.)

18880 (1913). An Improved Rope Haulage Clip. H. S.
Hunter, 1, Morven-place, Ashington, Northumberland, and
W. Bell, Ellington Colliery, Northumberland.—The clip is
intended to attach trams or wagons to a moving haulage
rope, so that they will be pulled along through the medium
of the clip. The invention consists of two parts, a crook
and a Y-piece, made of iron or other metal; these two
parts are hinged together by means of a pin or rivet at the
point R (shown on the accompanying drawing, fig. 3).
Fig. 1 shows an end elevation of the crook; the head is of
such a size as to just fit over and partially around a haulage
rope, the edge of the crook is bevelled and turned slightly
outward for convenience in hanging the crook on to the
rope, the bottom part of the crook is formed into a double
eye. Fig. 2 shows an end elevation of the Y-piece, upon

FIG. 3

which the rope rests when a strain is put upon the chain C.
The top or smaller arms of the Y are curved outward for
instantaneous attachment to the rope, the bottom or long
arm of the Y-piece is curved (shown in fig. 3), and a rivet
hole made in it at about the middle at the point R, another
hole is made near the end of the long arm at the point H
(fig. 3) so that a chain can be attached. The chain C
(fig. 3) is connected to the tub in the ordinary way either
by a hook or double eye. Fig. 3 is a side elevation of the
two pieces connected together and hung on to a haulage
rope; the direction the rope is travelling and hauling a
wagon is shown by arrow 1 (fig. 3). Owing to the chain on
the end of the V -piece being attached .to a load, there is a
pull on the chain in the direction shown by arrow 2 (fig. 3) ;
this causes the Y-piece to press upon the rope in an upward
direction shown by arrow 3, and also the top of the crook
to press upon the rope in a downward direction shown by
arrow 4, thus causing the clip to grip the rope. (One
claim.)

26790 (1913). Improvements in and Connected with Per-
cussive Hammers, Drills and the Like. W. H. Wakfer, of
67, Whitworth-road, South Norwood, Surrey, and S.
Peck, of Calbourne, Wallington, Surrey.—Relates to that
type of percussive tool in which the rod portion of the
piston hammer is suitably formed to co-operate with a nut
device to produce rotation of the tool during the travel of
the piston in one direction, rotation in one direction being
imparted to a tool-holding or chuck sleeve by means of a
suitable engagement between the nut sleeve and chuck
sleeve, and reverse rotation being prevented by means of
a ratchet and pawl mechanism. According to the inven-
tion the piston is double-ended—that is to say, each end of
the piston has its respective rod portion, so that the piston
has a rod portion not only at the front end but also at the
rear end. Therefore when one rod portion becomes worn
by use as a hammer head the piston may be removed and
reversed or turned end for end, so that the opposite rod por-
tion will be brought into use as a hammer head. In connec-
tion with such a piston there is provided a nut sleeve and
reversible ratchet and pawl mechanism which can be readily
applied to either end of the cylinder of the tool; thus not
only can the ratchet and pawl mechanism be reversibly

arranged on the front end of the tool, but when the piston
is reversed end for end the nut sleeve and ratchet and pawl
mechanism can be transferred to the rear end of the cylinder.
Ratchet and pawl mechanisms may be fitted on both ends
of the tool and two interchangeable nut sleeves may be
employed in connection therewith, one being arranged at
the front and one at the rear. If therefore the forwa rd
piston portion be provided with helical devices running in
one direction and the rear piston rod portion be provided
with helical devices running in the opposite direction, the
employment of one nut only at the forward end will give
one speed of rotation, and the employment of both nuts at
respective ends will produce higher speed of rotation of the
drill. One piston rod portion, however, may be helically
formed for co-operating with a rifled nut, while the other
piston rod portion is without helical devices and may be
square or angular in cross section, or fluted or otherwise
suitably formed so that it cannot turn in a sleeve which may
be similar externally to the rifled nut, but which is formed
with a non-helical square or angular or fluted bore to corre-
spond with its respective rod portion. This -sleeve may be

1G

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conveniently referred to as a nut sleeve, although it does
not produce rotation after the manner of a nut proper.
With this arrangement a positive drive or turning moment
is produced, because the piston when urged in one direction
is positively held against rotation by the square, angular,
or fluted rod moving in the appropriate so-called nut, which
latter in turn is held against rotation in one direction by
its appropriate ratchet and pawl mechanism. Consequently
the rifled nut is positively forced to turn and imparts its
turning movement to the chuck sleeve and the tool steel
in the latter. By simply removing the pawls of the ratchet
and pawl mechanism belonging to the square or non-
. helical nut, the turning effort is no longer positive, the
rotation being then due to the reluctance of the heavy
piston to turn under the action of the rifling, the nut
sleeve and chuck being consequently given what is termed
a slip drive or rotation. Fig. 1 is a longitudinal section of
a percussive drill in which a double ended piston is
employed in accordance with the invention. Fig. 2 is
partly a plan of fig. 1 and partly a section on the line VI—
VI, fig. 1. (Eight claims.)

26791 (1913). Improvements in and connected with Per-
cussive Hammers,- Drills, and the like. W. H. Wakfer, of
67, Whitworth-road, South Norwood, Surrey, and S. Peck,
of Calbourne, Wallington, Surrey.—Relates to improve-
ments in that type of percussive tool in which the rod
portion of the piston hammer is suitably formed to co-operate
with a nut device to produce rotation of the tool during
the travel of the piston in one direction, rotation in one
direction being imparted to a tool-holding or chuck sleeve
by means of a suitable engagement between the nut sleeve
and chuck sleeve, or between the piston and chuck sleeve,
and reverse rotation of the nut being prevented by means
of a ratchet and pawl mechanism. The principal object is
to provide a simple and efficient combined valve and cylinder
for percussive tools of the type referred to, the cylinder and
valve having their passages, ports and working parts so
designed and arranged that the cylinder and valve can be
mounted in the tool with either end to the front, the main
exhaust and auxiliary exhaust being emitted through the
same exhaust connection so that the working may be con-
trolled by throttling the exhaust. Other objects are to
provide facilities for valvular adjustments and for lubrica-
tion. According to the invention, the symmetrical exhaust
and auxiliary exhaust passages and ports are so constructed
and controlled by a self-acting piston valve that they both
admit the exhaust to a single exhaust connection, the
passage of the auxiliary exhaust to the connection aforesaid
being controlled by a cavity in the self-acting piston valve,
and a throttle being applied to the exhaust connection for
controlling the working of the tool by varying the back
pressure. The valve chest can be made either in one with
the cylinder, or so that it may be applied to the latter with
either end towards the front in known manner. The piston
valve may have the known cup-like recesses in its ends
which are adapted to abut or seat against respective hollow
end plugs. The valve preferably moves within a ported
liner disposed between screw-threaded adjusting plugs in
known manner, but the plugs are so constructed that, not
only do they act as adjustments for the liner, but they also
act as seats for the cupped ends of the piston valve. For
reference, see drawings to No. 26790. (Five claims.)

27232 (1912). Improvements in and connected with Percus-
sive Hammers, Drills and the like. W. H. Wakfer, 67,
Whitworth-road, South Norwood, Surrey, and S. Peck, of
Calbourne, Wallington, Surrey.—Relates to improvements
in that type of percussive tool in which the rod portion of
the piston hammer is suitably formed to co-operate with a
nut device to produce rotation of the tool during the travel
of the piston in one direction, rotation in one direction
being imparted to a tool-holding or chuck sleeve by means
of a suitable engagement between the nut sleeve and chuck
sleeve, or between the piston and chuck sleeve. The
principal objects are to produce a simple and cheap construc-
tion of tool of the type aforesaid, which shall possess a high
dOgrpO of pfficiercv, and be capable nf simple adjustments

Continued on page 268,