Chucks or sockets – Radially reciprocating jaws
Patent
1974-07-12
1976-03-02
Spar, Robert J.
Chucks or sockets
Radially reciprocating jaws
29 37R, 82 27, 279 41A, 279 75, B65H 5126
Patent
active
039412563
ABSTRACT:
A bar holder and feeder for an automatic machine tool comprising an elongated bar holder aligned with the machine tool, which bar holder can be opened to allow bar to be loaded thereinto; loading means to load bar into a loaded position in the bar holder; and a bar feeder positioned between the elongated bar holder and the machine tool, through an open collet of which machine tool bar is to be fed from the bar holder, the bar feeder comprising a sleeve engageable over a bar to be fed at a position externally of the machine tool and feed means to cause axial movement of the sleeve, the sleeve having internal biased gripping means which permit the sleeve to be moved by the feed means over the bar in a direction away from the machine tool but prevent the sleeve being moved by the feed means over the bar in a direction towards the machine tool, whereby a reciprocation of the sleeve by the feed means causes the bar to be fed to the machine tool, and means to prevent movement of the bar from the loaded position in a direction away from the machine tool to enable the sleeve initially to be pressed over the end of the bar nearer the machine tool or means to move the bar towards the machine tool initially to engage the end of the bar nearer the machine tool in the sleeve.
The loading means may include a pair of jaws which can grip the bar in the loaded position and prevent movement of the bar away from the machine tool. The feed means may comprise a slide, with which the sleeve can be entrained, movable towards and away from the machine tool by a suspended weight and/or piston/cylinder arrangement.
REFERENCES:
patent: 1516146 (1924-11-01), Buckingham
patent: 3019027 (1962-01-01), Klein
patent: 3262583 (1966-07-01), Thevenet
patent: 3827581 (1974-08-01), Inui
Doe Ewart H.
Linforth William J.
Abraham George
Markva Neil F.
Spar Robert J.
Twyford Moors (Aircraft & Engineering Limited)
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