August 6, 1915. THE COLLIERY GUARDIAN. 295 SUTCLIFFE’S COAL CUTTERS, DISC & CHAIN TYPES, light or heavy pattern, for thin or thick seams, with shallow or deep cuts. Compressed Air or Electrical Drive Coal-Face Conveyors, u„,MMIn capacity, constant in work, noiseless in the face and most easily moved forward. Roadway Conveyors, wwoh freely from the face to admit ripping In the gateway. Hauling Gear, to keep a constant supply of tubs between the engine plane and coal face with Instantaneous extension of endless rope. Wire Belting, for conveyors of all kinds. Slower lSTEADILYj 9\ k 8 RAISE^M ^STOP/^I 1 UJo £ a“SUMENB |l|^\ A5 WRAISEi 5 jfySTEMILYj WINDING SIGNALS “NON-CUMULATIVE.” A ELECTRIC. MECHANO-ELECTRIC. MECHANICAL SIMPLE. EFFICIENT. INEXPENSIVE. The “DAVIS-MACDONALD” BALL-RACE CONTACT-MAKING RELEASE Thomson’s Non-Overwind, simplest, safest, surest, and cheapest. Sutcliffes Universal Sounding & Displaying Signalling Apparatus, fully complying with Regula- tion 95 of the MINES ACT. NOTE.—The above machinery is all patented or protected and makers or users of infringing articles will be liable to be prosecuted. FULL PARTICULARS FROM RICHARD SUTCLIFFE, Universal Works, HORBURY, WAKEFIELD, England, is the most efficient Release in connection with Visual Signals. Signals cancelled immediately the engine starts, also stops Emergency Signals shewn during Winding. The contact- making arms are ENTIRELY ENCLOSED from dust, oil, etc. (not shown in the illustration). JI SEND'FOR .’LIST 41 v. JOHN DAVIS &. SON (Derby) Ltd. All Saints Works, DERBY ; & 17, Victoria Street, Westminster, S.W. SELF-CONTAINED MILL Producing BUOYANT, MIXED or COARSE Dust at one Operation, from Run of Mine Shale. 20 MILLS SOLD THIS YEAR. Several Repeat Orders. WM. JOHNSON & SONS (LEEDS) LTD., Armley, Leeds Specialities : CRUSHING, GRINDING and SCREENING, BRIQUETTING, CEMENT and BRICKMAKING MACHINERY. ANTHRACITE COAL PLANT We have Specialised in this class of Machinery, and have designed and made more than all other firms combined. References to Users are Invited. Established 50 Years. fSHEPPMH) LTD., BRIDGEND, 50UTH WALES?