Metallizing gun

Claim 2

A metallizing gun employing an electric arc which is produced between and melts ends of two metal wires, said gun comprising means defining a support, two electric power supply conductors combined with said support, a pair of first contact members which are fixed in said support and insulated from each other and electrically connected to said conductors, a feed device having two outlets and fixed with respect to said support, for feeding said two wires through said outlets, means defining a head detachably mountable on said support in a given position, means defining two electrically conductive wire guides having outlet ends and inlet ends and mounted on said head in fixed relation to said head, a blowing nozzle mounted on said head in fixed relation to said head and adapted for connection to a compressed air supply for spraying molten metal from said wires, a pair of second contact members fixed to said head and insulated from each other and electrically connected to said wire guides, said pairs of first and second contact members and said outlets of said feeding Device and said wire guide inlet ends being relatively located in such positions that when said head is mounted in said given position on said support said wire guide inlet ends are aligned with said outlets of the feed device for passage therethrough of said wires and said pair of first contact members are aligned with and in clampable electrical contact with said pair of second contact members, and releasable clamping means for releasably clamping said head in said given position on said support, whereby said wire guides and blowing nozzle can be simultaneously combined with or released from said feed device.

Claim 3

A gun as claimed in claim 1, wherein one of said pairs of contact members is a pair of plugs and the other pair of contact members is a pair of sockets electrically engageable in said plugs, said clamping means acting on said head in a direction for maintaining said sockets on said plugs.

Claim 4

A metallizing gun employing an electric arc which is produced between and melts ends of two metal wires, said gun comprising means defining a support, two electric power supply conductors combined with said support, a pair of first contact members which are fixed in said support and insulated from each other and electrically connected to said conductors, a feed device having two outlets and fixed with respect to said support, for feeding said two wires through said outlets, means defining a head detachably mountable on said support in a given position, means defining two electrically conductive wire guides having outlet ends and inlet ends and mounted on said head in fixed relation to said head, a blowing nozzle mounted on said head in fixed relation to said head and adapted for connection to a compressed air supply for spraying molten metal from said wires, a pair of second contact members fixed to said head and insulated from each other and electrically connected to said wire guides, said pairs of first and second contact members and said outlets of said feeding device and said wire guide inlet ends being relatively located in such positions that when said head is mounted in said given position on said support said wire guide inlet ends are aligned with said outlets of the feed device for passage therethrough of said wires and said pair of first contact members are aligned with and in clampable electrical contact with said pair of second contact members, and releasable clamping means for releasably clamping said head in said given position on said support, whereby said wire guides and blowing nozzle can be simultaneously combined with or released from said feed device, one of said pairs of contact members being a pair of plugs, each plug having a portion having convergent flat faces, and the other of said pairs of contact members being a pair of sockets, each socket having a portion having a shape complementary to the shape of said portions of said plugs, said sockets being adapted to be engaged on said plugs when said head is mounted on said support in said given position.

Claim 5

A metallizing gun employing an electric arc which is produced between and melts ends of two metal wires, said gun comprising means defining a support, two electric power supply conductors combined with said support, a pair of first contact members which are fixed in said support and insulated from each other and electrically connected to said conductors, a feed device having two outlets and fixed with respect to said support, for feeding said two wires through said outlets, means defining a head detachably mountable on said support in a given position, means defining two electrically conductive wire guides having outlet ends and inlet ends and mounted on said head in fixed relation to said head, a blowing nozzle mounted on said head in fixed relation to said head and adapted for connection to a compressed air supply for spraying molten metal from said wires, a pair of second contact members fixed to said head and insulated from each other and electrically connected to said wire guides, said pairs of first and second contact members and said outlets of said feeding device and said wire guide inlet ends being relatively located in such positions that when said head is mounted in said given position on said support said wire guide inlet ends are aligned with said outlets of the feed device for passage therethrough of said wires and said pair of first contact members are aligned with and in clampable electrical contact with said pair of second contact members, and releasable clamping means for releasably clamping said head in said given position on said support, whereby said wire guides and blowing nozzle can be simultaneously combined with or released from said feed device, one of said pairs of contact members being a pair of plugs, each plug having a portion having convergent flat faces, and the other of said pairs of contact members being a pair of sockets, each socket having a portion having a shape complementary to the shape of said portions of said plugs, said sockets being adapted to be engaged on said plugs when said head is mounted on said support in said given position.

Claim 6

A gun as claimed in claim 3, wherein said clamping means comprise a single screw having an enlarged head and adjustably screw-threadedly engaged in said support, and means defining an aperture extending through said head and having the shape of a keyhole having a narrow part having a width slightly smaller than the head of said screw and greater than the diameter of said screw, and a wide part having a width exceeding the diameter of a head of said screw, said screw head acting on said head in a direction to clamp said portions of said first and second contact members together.

Claim 7

A gun as claimed in claim 3, wherein said flat faces are parallel to a plane so that said plugs and sockets are relatively slidable in directions parallel to said plane and allow said head to be slide to said given position, said clamping means acting in a direction perpendicular to said directions of sliding.

Claim 8

A metallizing gun employing an electric arc which is produced between and melts ends of two metal wIres, said gun comprising means defining a support, two electric power supply conductors combined with said support, a pair of first contact members which are fixed in said support and insulated from each other and electrically connected to said conductors, a feed device having two outlets and fixed with respect to said support, for feeding said two wires through said outlets, means defining a head detachably mountable on said support in a given position, means defining two electrically conductive wire guides having outlet ends and inlet ends and mounted on said head in fixed relation to said head, a blowing nozzle mounted on said head in fixed relation to said head and adapted for connection to a compressed air supply for spraying molten metal from said wires, a pair of second contact members fixed to said head and insulated from each other and electrically connected to said wire guides, said pairs of first and second contact members and said outlets of said feeding device and said wire guide inlet ends being relatively located in such positions that when said head is mounted in said given position on said support said wire guide inlet ends are aligned with said outlets of the feed device for passage therethrough of said wires and said pair of first contact members are aligned with and in clampable electrical contact with said pair of second contact members, and releasable clamping means for releasably clamping said head in said given position on said support, whereby said wire guides and blowing nozzle can be simultaneously combined with or released from said feed device, said clamping means comprising a screw having an enlarged screw head and screw-threadedly adjustably engaged in said support, means defining a keyhole shaped aperture extending through said head and having a wide part for allowing said screwhead to pass therethrough and an elongated narrow part which is contained in a plane and allows said screw but not said screw head to pass therethrough, whereby said head can be initially mounted on said support by passing said screw through said wide part of said aperture and thereafter shifted in a given direction parallel to said plane to said given position so that said screw is engaged in said narrow part of said aperture, said wire guide inlet ends and said outlets being adapted and arranged to telescopically interengage in directions parallel to said plane.

Claim 9

A metallizing gun employing an electric arc which is produced between and melts ends of two metal wIres, said gun comprising means defining a support, two electric power supply conductors combined with said support, a pair of first contact members which are fixed in said support and insulated from each other and electrically connected to said conductors, a feed device having two outlets and fixed with respect to said support, for feeding said two wires through said outlets, means defining a head detachably mountable on said support in a given position, means defining two electrically conductive wire guides having outlet ends and inlet ends and mounted on said head in fixed relation to said head, a blowing nozzle mounted on said head in fixed relation to said head and adapted for connection to a compressed air supply for spraying molten metal from said wires, a pair of second contact members fixed to said head and insulated from each other and electrically connected to said wire guides, said pairs of first and second contact members and said outlets of said feeding device and said wire guide inlet ends being relatively located in such positions that when said head is mounted in said given position on said support said wire guide inlet ends are aligned with said outlets of the feed device for passage therethrough of said wires and said pair of first contact members are aligned with and in clampable electrical contact with said pair of second contact members, and releasable clamping means for releasably clamping said head in said given position on said support, whereby said wire guides and blowing nozzle can be simultaneously combined with or released from said feed device, said clamping means comprising a screw having an enlarged screw head and screw-threadedly adjustably engaged in said support, means defining a keyhole shaped aperture extending through said head and having a wide part for allowing said screwhead to pass therethrough and an elongated narrow part which is contained in a plane and allows said screw but not said screw head to pass therethrough, whereby said head can be initially mounted on said support by passing said screw through said wide part of said aperture and thereafter shifted in a given direction parallel to said plane to said given position so that said screw is engaged in said narrow part of said aperture, said wire guide inlet ends and said outlets being adapted and arranged to telescopically interengage in directions parallel to said plane.