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    A holder for a pick, and the combination of a pick and holder
    1.
    发明公开
    A holder for a pick, and the combination of a pick and holder 失效
    Pickenhalter sowie aus Picke und Halter bestehende Einrichtung。

    公开(公告)号：EP0160757A1

    公开(公告)日：1985-11-13

    申请号：EP84303027.1

    申请日：1984-05-04

    申请人： G-D M & C Limited

    发明人： Radford, Leonard

    IPC分类号： E21C35/18 ,  E21C35/22

    CPC分类号： E21C35/187 ,  E21C35/197 ,  E21C2035/1806 ,  E21C2035/1816

    摘要： A holder for a pick and the combination of a pick and holder.
    The pick (1) has a shank (4) received in a socket (6) of a holder (2). The holder (2) carries in its socket (6) a tubular spigot (13) which mates in sealed manner with a coupling socket (15) in the pick shank to provide communication for water flow from a supply passage (16a) through the pick (1) to outlet ports (12). A shoulder (8) on the spigot (13) abuts a sealing ring (18) in the coupling socket (15) to retain the pick in the holder and permit relative longitudinal displacement therebetween.
    Carried by the tubular spigot (13) is a valve having an actuating rod (22) which extends through the bore of the spigot A valve head (24) on the rod (22) is seatable on a shoulder 123a) to close off water flow through the bore of the spigot. The end (26) of the rod (22) abuts the pick and during displacement of the pick into its holder in response to cutting engagement of the pick with the mineral, the valve head (24) is displaced to permit water flow to the ports (12). When the pick disengages from the mineral, water pressure on the pick and valve head (24) closes the valve head to seal against the shoulder (23a).

    摘要翻译： 拾取器（1）具有容纳在保持器（2）的插座（6）中的柄部（4）。 保持器（2）在其插座（6）中承载一个管状插口（13），密封方式与拾取柄中的联接插座（15）配合，以提供从供给通道（16a）通过拾取器 （1）到出口（12）。 接头（13）上的肩部（8）邻接联接插座（15）中的密封环（18），以将拾取器保持在保持器中并允许它们之间的相对纵向位移。 由管状插口（13）承载的是具有延伸穿过插口的孔的致动杆（22）的阀。 杆（22）上的阀头（24）可以在肩部（23a）上座位，以封闭穿过套管的孔的水流。 杆（22）的端部（26）邻接拾取器并且在拾取器与矿物的切割接合之间将拾取头移动到其保持器中时，阀头（24）被移位以允许水流到端口 （12）。 当拾取器与矿物脱离时，拾取阀和阀头（24）上的水压关闭阀头以密封肩部（23a）。

    Mineral cutting tool
    4.
    发明公开
    Mineral cutting tool 失效
    Mineralabbauwerkzeug。

    公开(公告)号：EP0086040A2

    公开(公告)日：1983-08-17

    申请号：EP83300181.1

    申请日：1983-01-14

    申请人： G-D M & C Limited

    发明人： Radford, Leonard ,  Joel, George

    IPC分类号： E21C35/18 ,  E21C35/22

    CPC分类号： E21C35/187

    摘要： Mineral mining apparatus comprisng a pick head 1 mounted on a pick holder 4 for displacement of a cutting part 5 in the direction of arrow A has a none 9 in the head 1 through which nozzle water is sprayed to dust suppression, cooling or flushing purposes. The characteristics of the nozzle 9 provide the spray 22 with a flat einfiguration where the width y of the spray is greater than its depth x. Preferably the width y lies in the cutting plane 20 of the cutting part and the spray follows the cutting part to deviate incendive sparking.
    In a modification the nozzle 9 can be mounted on the holder 4.

    A mineral mining pick and holder assembly
    5.
    发明公开
    A mineral mining pick and holder assembly 失效
    切割位和保持器的阵列。

    公开(公告)号：EP0121020A1

    公开(公告)日：1984-10-10

    申请号：EP83306662.4

    申请日：1983-11-02

    申请人： G-D M & C Limited

    发明人： Thorpe, John Douglas ,  Joel, George

    IPC分类号： E21C35/18 ,  E21C35/22

    CPC分类号： E21C35/187

    摘要： The combination of a mineral mining pick and a pick holder. The pick (1) has a shank (4) by which it is received in a socket (6) of a pick holder (2). Extending within the socket (6) is a spigot (13) which mates with a coupling socket (14) in the shank (4) automatically as the shank is inserted into the pick holder. During insertion of the spigot (13) into the socket (14), a frusto conical head (26) on the spigot passes through a resilient ring (25) mounted in an annular recess (24) of the coupling socket so that abutment of a shoulder (27) on the head (26) against the ring (25) retains the pick in the holder.
    The spigot (13) may be tubular to provide a watercoupl- ing from chamber (23) in the holder to passage (11) and ports (12) in the pick forflushing, cooling or dust suppression water supply. The resilient retaining ring (25) may provide a water seal between the spigot (13) and the socket (14).
    In an alternative arrangementthe spigot can be carried by the shank (4) to engage in a coupling socket in the holder (2).