THE COLLIERY GUARDIAN. June 11, 1915. 1242 bucket sections between the points of pivot with co-acting means whereby a movement of one section causes a corre- sponding movement of the other section. It is further proposed to provide means for checking or retarding the opening movement of the sections, and for reducing the shock as the two sections open to discharge the contents of the bucket. According to one example of construction, each bucket section is furnished with a hinge or bracket pro- vided with bosses, in which the outer end of the hinge pin is secured, each hinge being pivoted on a separate pivot pin, mounted in bosses formed on the side of the drum casing or on an extended part thereof, and the inner side faces of the hinges are rounded, the arc being struck from the pivot pin, rack teeth or equivalent engaging or co-acting means being furnished on the ends or rounded portions, the teeth or other means on one hinge engaging or co-acting with those on the other, so that the two bucket sections move in unison. In order to prevent the hinge parts or brackets of the bucket sections coming together with a shock when opened, a buffer comprising or controlled by a spiral or other spring may be provided, and to further check, the opening of the bucket sections a dash-pot may also be provided. Fig. 1 is a side elevation of one embodiment of the inven- tion, showing the buckets in open position; fig. 2 is a similar view, showing the buckets in closed position ; fig. 3 is a plan of part of one end of the grab, as shown in fig. 1; fig. 4 is a similar view, with parts of the mechanism removed; fig. 5 is a plan of the crossbar to which the upper part of th’e bucket arms are connected; figs. 6 and 7 are side elevations in closed and open position respectively of a modified form of means for maintaining the bucket sec- tions in a balanced condition; and figs. 8 and 9 are side elevations in closed and open position respectively of a further modified form of means for maintaining the bucket sections in a balanced condition. (Eighteen claims.) 11599 (1914). Improvements in or relating to Portable Electric Safety Lamps for use in Mines or Other Places. L. Bristol, of 48, Great Smith-street, Westminster, S.W.— Relates to portable electric safety lamps for mining and other purposes of the kind in which the accumulator is arranged in a case having a hinged cover adapted to be locked in position, and provided with additional lock means, which must be operated before the cover can be moved on its hinge. The portable electric safety lamp, in accordance with this invention, comprises a case, an accumulator therein having a strip of acid-proof material between the vent holes and the terminals, and a hinged cover adapted to be locked in position, and provided with additional lock means which must be operated before the cover can be moved on its hinge, and having mounted thereon a gas- Mg.4. y Lv/ W h W~~T h 'O p Lz'jz Xf J tight rotary or partial rotary switch adapted to be operated to complete the circuit between the accumulator and the lamp bulb, said hinged cover having also resting thereon a rim q adapted to maintain the lamp support and guard in position, and being provided with a projecting pin, which coincides with ,a hole in a movable slide, which is locked in position by the closing of the hinged cover. Fig. 1 is an outside elevation of the lamp, fig. 2 is .a sectional elevation of the lamp showing the hinged cover, fig. 3 shows on an enlarged scale the means for locking the cover in position, and fig. 4 shows the rotary switch. Fig. 5 shows a modified construction of the additional lock means, the parts sup- ported by the cover being omitted for the sake of clearness and the handle .attached directly to the cover, and fig. 6 is a side elevation of the lamp shown in fig. 5. (Four claims.) 12052 (1914). Improvements in and relating to Means for Conveying and otherwise Dealing with Materials in Bulk. P. R. Allen, of Ferncliffe, Weston-road, Runcorn, Cheshire. —The object is to provide means for enabling materials, which are to be stocked in bulk and require to be subse- quently moved, to be dealt with in a more advantageous manner than heretofore, the apparatus having an increased range of usefulness compared with known apparatus. For this purpose apparatus according to the invention comprises an elevator and a conveyor, movable in relation one to the other and collectively adapted to be traversed by a carrier over a storage region, the arrangement being such that the material can be transferred by the elevator from any col- lecting region to the conveyor for piling in another region, and thereafter removed from the pile in an analogous way as occasion may demand. In dealing with coal, slack or grain, the arrangement may comprise a carrier in the form of a bridge of any convenient length, supported by a carriage at or near each end, the height of the bridge above the storage floor depending chiefly upon the nature of the material to be dealt with. Each carriage is arranged to run on suitable tracks on the ground level or thereabouts, and propelling gear is employed .adapted to impart a uniform travelling motion to each carriage. The bridge proper carries a mechanical conveyor, extending from one end t’o the other. This conveyor is reversible, so that any material fed'on to it can be conveyed from either end of the bridge to the other, and by means of suitable slides or shutes in the bottoms of the troughs, or by means of deflector ploughs, if a band conveyor is used, the material can be deposited at any intermediate point between the two ends of the bridge, or discharged at either end of the bridge itself. The travelling bridge also carries a headstock or truck, which runs the full length of the bridge parallel to the conveyor. This headstock carries the upper journal of a swinging arm or other elevator member, which can be raised and lowered like the jib of an ordinary bucket dredger, so that it can be altered in position to raise the material from the ground level, or any point above the ground level, and discharge it so as to come under the operation of the horizontal con- veyor. As the headstock can be moved to any position along the bridge, it can raise the material from any point between the two end carriages; and as the bridge itself is capable of an indefinite longitudinal movement, limited only by the length of the track on which it runs, the area to be dealt with is bounded by the effective length of the bridge and the z ■ ■' ■ ' ' ly : J. xW / \L \ \ | W' -----rfe GtL .‘'O “HW ‘J4/' ‘ MJ ' nL ■ area of the ground set apart as a storage area. The lower end of the swing elevator is, or may be, provided with an adjustable boot, the position of which can be altered to suit the angles at which the elevator is for the moment operating. For certain classes of material, such as grain and fine slack, a pneumatic elevator may be used. Figs. 1 and 2 are similar elevations of apparatus intended for dealing with coal and the like by means of a mechanical elevator, fig. 1 showing the apparatus as used when removing material from a railway truck to a stock heap, and fig. 2 showing the apparatus as used for transferring material from the stock heap to a truck. Fig. 3 is a plan corresponding to fig. 2, and figs. 4 and 5 are end elevations corresponding respectively to the left and right hand sides of fig. 1. (Three claims.) 11780 (1914). Improvements in Signalling Apparatus such as is Employed in Collieries. John Davis and Son (Derby) Limited and W. H. Davis, both of All Saints Works, Derby.—Relates to the type of signalling apparatus such as is employed in collieries, in which both audible and visible indications of the signal transmitted are given, the visible signal to remain until it has been restored to normal position by hand, electrically or automatically; as, for example, by the movement of the engine starting or indicating gear, or by a mechanical pull or electric push. Fig. 1 18996. Telphers, cranes, and the like adapted to carry tripping skips or receptacles. Robert Dempster and Sons Limited, and Rowlands. 20138. Welding furnaces. Twigg. 20621. Process of and mixture for use in preparing steel for painting. Feidt. 21339. Clamping devices for securing together angularly arranged wires, ropes, rods, or the like, at their place of juncture. Bullivant and Bullivant. 21349. Brakes for railway wagons and the like. Mclnally. 1915. 864. Ratchet braces and the like. Hardy Patent Pick Company, and Bartholomew. 1757. Steam and gas turbines. Akt.-Ges. der Maschinen- fabriken Escher, Wyss et Cie. Complete Specifications Open to Public Inspection Before Acceptance. 1915. 1883. Device for automatically disconnecting water pump- ing engines and the like. Allgemeine Elektri- citats Ges. 7338. Injectors for ventilating purposes. Reinhard. 7675. Manufacture of electric cables. Smith. 7839. Device for changing regenerating cartridges of breath- ing apparatus. Hanseatische Apparatebau Ges. vorm. L. Bremen and Company. 7875. Cradles or stages for use in the sinking or construc- tion of shafts. Bade. 7935. Breathing devices for diving equipments and the like. Hanseatische Apparatebau Ges. vorm. L. von Bremen and Company. THE ACQUISITION OF ENEMY PATENT RIGHTS. The following list of British Patents, which have been granted in favour of residents of Germany, Austria, or Hungary, is furnished in view of the new Patents Acts, which empower the Board of Trade to confer upon British subjects, the right to manufacture under enemy patents, which right, when acquired, can be retained after the war, and is specially compiled for the Colliery Guardian by Lewis Wm. Goold, chartered patent agent, 5, Corporation-street, Birmingham. It is desirable in the first instance to obtain the latest particulars upon the Patents Register. If any patent listed has been assigned to a non-enemy proprietor, the law does not apply. 3518/13. Pumps; diaphragm and flexible chamber pumps. Pumps in which the piston is connected to the cylinder wall by a tubular bag, containing air