Patent GB-191509777-A (GB)
Title: Improvements in Signalling Apparatus for use in Collieries and other Mines.
Inventor: HOLLAND JOSEPH
IPC: B66B19/06
Filed: 1915-07-05
Granted: 1915-12-09
Abstract: 9777. Holland, J., and Becker, W. H. July 5. Bell and gong signals; mechanical telegraphs. -In signalling-apparatus for use in mines, the various indicators are reset by a nut travelling along a screw-threaded rod rotated by the winding-engine, the nut having wedged surfaces which operate tripping-rods to release the indicator-retaining mechanism. The travel of the nut corresponds to the complete "wind," and the position of the tripper-rods determines at which part of the winding period the various indicators shall be reset. The engineman's instrument has two dials (not shown), over which pointers are moved step by step by mechanically or electrically operated mechanism. When the " onsetter " pulls a wire r<2>, a lever r<1> on a spindle r raises a member r<4> in engagement with one arm of the bell hammer r<7>, which strikes the bell r<10> under action of a spring r<9> when the wire r<2> is released. The spindle r carries a cam s, which oscillates a pivoted arm s<1> carrying a pawl s<5> serving to advance a ratchet-wheel h one step for each pull on the wire r<2>. A pointer (not shown) carried by the spindle h<3> makes corresponding movements over a dial. A detent h retains the ratchet-wheel against the action of a resetting-spring h'. At the third step, a projection h<6> on the ratchetwheel engages a projectien c<2> on a "men" signal c pivoted at c<1>, raising the signal c to exhibit the word " men through an opening a'. The member c is retained in this position by a projection c<3> engaging a recess p<2> in the arm p<1> of a member pivoted at p. The arm p<1> is loosely connected to a member at q pivoted at q<2> and engaged by a slidable member f<2>. A slidable rod f engages at its upper end with a plate g, the upturned end of which is in engagement with the detent h. Secured to the rod f is a member f The upper ratchetwheel j<2>, with its pointer (not shown), is operated by the "banksman" by energizing a solenoid l, the core of which is connected to a pivoted arm k<1> carrying a pawl k<2>, which serves to move the ratchet-wheel. The ratchetwheel is held against the action of a resetting- spring by a detent j. The " men " signal d is raised, when desired, by an independently energized solenoid n, to exhibit the word. " men " through an opening b<1>. The signal d is retained by a detent m<1> resting on the detent j engaging a projection d<2> on the signal d. A rod f<4> resting on the plate g bears at its upper end against a plate i, the upturned end of which engages the pawl k<2> and detent j. A nut e<2>, adapted to travel along a threaded spindle e rotated from the winding-engine, first engages and raises the projecting members f<1> or f, according to the direction of the winding movement, thus raising the detents h, j, m<1> and pawl k<2>, whereupon both pointers and the signal d are reset. The nut e<2> next raises the member f<2>, thus releasing the projection c<3> and allowing the signal c to fall. To allow the signal c to fall when a predetermined number of pulls, for example five, are given on the wire r<2>, a projection h<5> on the wheel h<2> is adapted to engage a pivotally-hung quadrant o, swinging the quadrant to move the arm p' of the member pivoted at p, releasing the projection c<3>. In a modification, Fig. 6, the member f<2> is replaced by a rotatable member t, operated by the nut e<2> and having a projectian t<2> adapted to raise the member q when the projection t<2> passes a projection q<3> on the member q. This allows the " men signal c to be exhibited during more than half the winding period. A modification is also described for use when signals are given from other levels than the top and bottom of the shaft.