Flame cutting tip

Claim 2

In a device of the class described, the combination of: an elongated core means having a cylindrical external wall portion at its inner end and a frustoconical tapering external surface at its forward end with longitudinal channels recessed therein tapering into said cylindrical wall portion, a base member having a central enlarged compartment at its forward end to define a forward-facing internal shoulder element therein and a cylindrical wall receiving said external cylindrical wall portion, one of said cylindrical wall portions having a radially opening annular groove adjacent to its inner end, sealing means carried concentrically in said annular groove to telescope in sliding relationship against the other cylindrical wall portion to hold them in concentricity, a sleeve member having a tapering internal surface corresponding with said external tapering surface at the forward end to engage therewith and a shoulder element at the inner end thereof, a retainer means for supporting said sleeve member and said base member in assembled relationship, and resilient means disposed between one of said members and one of said core and retaining means urging said surfaces into heat transfer contact with each other under pressure at their forward ends to convert said channels into conduits and discrete ports.

Claim 3

The combination called for in claim 1 in which said base member has a central conduit conducting a cutting gas to said compartment, said core means having a central conduit conducting said cutting gas from said compartment to an outlet port on the forward end of said core centrally located with said channel conduits, said means carried in said annular groove sealing the space between said base member and core means at said telescoping relationship whereby the pressure of cutting gas in said compartment comprises said resilient means and is effective over the inner end area of the core means.

Claim 4

The combination called for in claim 1 in which said base member has preheat gas conduits communicating with said channel conduits, said retainer means having an internal cylindrical wall section, said shoulder element having a cylindrical wall section, one of said cylindrical wall section having a radially opening annular groove, and resilient means carried in the last-mentioned annular groove to seal in sliding relationship against the other cylindrical wall section to seal said last sliding relationship against escape therethrough of preheat fuel gas mixtures to atmosphere.

Claim 5

The combination called for in claim 1 in which said resilient means comprises a spring means disposed in said compartment between said shoulder member and core means, and said retainer means includes a releasable member and a fixed member releasably interengaging each other to compress said spring means.

Claim 6

The combination called for in claim 1 in which: said retainer means includes a releasable member having an internal flange thereon, and said resilient means is disposed between said shoulder element on said sleeve and said internal flange.

Claim 7

The combination called for in claim 1 in which said core means has a second annular groove thereon and including, spring means 86 carried in the second annular groove engaging said sleeve member in assembly retaining relationship.

Claim 8

The combination called for in claim 1 in which said retainer means includes a retainer nut for holding said base member, a cup-shaped releasable member rotatively engaging said shoulder element on tHe sleeve member, and finger-manipulating means releasably for compressing said resilient means and securing said retainer nut and cup member in assembled relation under the force of said compression.

Claim 9

The combination called for in claim 7 in which said finger-manipulated means comprises mating threads carried by the wall of the cup member and said retainer nut.

Claim 10

The combination called for in claim 7 in which said finger-manipulated means comprises a bayonet-type joint.

Claim 11

The combination called for in claim 1 in which the means carried in said annular groove comprises a material characterized by its ability to withstand elevated temperatures, chemical inertness, toughness and elasticity.

Claim 12

In a device of the class described the combination of: an elongated core member having a cylindrical external wall portion terminating at its inner end in an end wall and a external surface tapering at approximately 8* at its outer end with longitudinal fuel mixture gas channels recessed therein, a base member having a central gas-conducting conduit enlarged at its forward end to define internally a forward-facing shoulder therein and a cylindrical wall telescopically receiving said external cylindrical wall portion a variable distance between the end wall and shoulder, one of said cylindrical wall portions having a radially opening annular groove, means carried by said annular groove to seal in sliding relationship against the other cylindrical wall portion, means having a resilient body disposed between the inner end wall of said core member and said shoulder to urge said core member in a relative forward direction from said shoulder.

Claim 13

In a device of the class described the combination of: an elongated core member having a cylindrical external wall portion terminating at its inner end in an end wall and a external surface tapering at approximately 8* at its outer end with longitudinal fuel mixture gas channels recessed therein, a base member having a central gas-conducting conduit enlarged at its forward end to define internally a forward-facing shoulder therein and a cylindrical wall telescopically receiving said external cylindrical wall portion a variable distance between the end wall and shoulder, one of said cylindrical wall portions having a radially opening annular groove, means carried by said annular groove to seal in sliding relationship against the other cylindrical wall portion, means having a resilient body disposed between the inner end wall of said core member and said shoulder to urge said core member in a relative forward direction from said shoulder.

Claim 14

In a device of the class described the combination of: an elongated core member having a conduit centrally therethrough and having a cylindrical external wall portion with a wall at its inner end and a tapering external surface at its outer end over a minor portion of its length with longitudinal fuel mixture gas channels recessed therein and extending into the cylindrical wall portion, a sleeve member having a tapering internal surface corresponding with said external tapering surface extending a distance greater than said minor portion to provide gradually converging circular walls defining a tapering distribution space leading to said gas channels, a base member having conduits in communication with said tapering space and a central gas-conducting conduit enlarged at its forward end to define internally a forward facing shoulder therein and a cylindrical wall telescopically receiving said external cylindrical wall portion a variable distance between the wall and shoulder and in communication with said conduit in said core member, one of said cylindrical wall portions having a radially opening annular groove, means carried by said annular groove to seal in sliding relationship against the other cylindrical all portion, spring means disposed between said core member wall and said shoulder urging said core means in a relative forward direction from said shoulder, and means releasably interengaging said base member and said sleeve member to compress said spring means and hold said sleeve member into pressure contact with said core member.

Claim 15

In a device of the class described the combination of: an elongated core member having a conduit centrally therethrough and having a cylindrical external wall portion with a wall at its inner end and a tapering external surface at its outer end over a minor portion of its length with longitudinal fuel mixture gas channels recessed therein and extending into the cylindrical wall portion, a sleeve member having a tapering internal surface corresponding with said external tapering surface extending a distance greater than said minor portion to provide gradually converging circular walls defining a tapering distribution space leading to said gas channels, a base member having conduits in communication with said tapering space and a central gas-conducting conduit enlarged at its forward end to define internally a forward facing shoulder therein and a cylindrical wall telescopically receiving said external cylindrical wall portion a variable distance between the wall and shoulder and in communication with said conduit in said core member, one of said cylindrical wall portions having a radially opening annular groove, means carried by said annular groove to seal in sliding relationship against the other cylindrical all portion, spring means disposed between said core member wall and said shoulder urging said core means in a relative forward direction from said shoulder, and means releasably interengaging said base member and said sleeve member to compress said spring means and hold said sleeve member into pressure contact with said core member.

Claim 16

In a device of the class described the combination of: an elongated core member having a cylindrical external wall portion with a wall at its inner end and a tapering external surface at its forward end with circumferentially spaced longitudinal channels recessed therein, means for supporting said core member having a central enlarged compartment at its forward end to define an internal cylindrical wall receiving said external cylindrical wall portion and a forward-facing shoulder therein, one of said cylindrical wall portions having a radially opening annular groove, resilient means carried by said annular groove to seal in sliding relationship against the other cylindrical wall portion, spring means disposed between said core member wall and shoulder urging said core member in a relative forward direction from said shoulder, and sleeve means carried by said supporting means and having a circular surface internally engaging said core member at the tip thereof to oppose said forward action of the spring under radially directed pressure contact and convert said channels into conduits having discrete ports outwardly bordered by said circular surface.

Claim 17

In a device of the class described the combination of: an elongated core member having a cylindrical external wall portion with a wall at its inner end and a tapering external surface at its forward end with circumferentially spaced longitudinal channels recessed therein, means for supporting said core member having a central enlarged compartment at its forward end to define an internal cylindrical wall receiving said external cylindrical wall portion and a forward-facing shoulder therein, one of said cylindrical wall portions having a radially opening annular groove, resilient means carried by said annular groove to seal in sliding relationship against the other cylindrical wall portion, spring means disposed between said core member wall and shoulder urging said core member in a relative forward direction from said shoulder, and sleeve means carried by said supporting means and having a circular surface internally engaging said core member at the tip thereof to oppose said forward action of the spring under radially directed pressure contact and convert said channels into conduits having discrete ports outwardly bordered by said circular surface.

Claim 18

In a flame cutting torch of the class described a head member with a plurality of gas passages opening in radially spaced relationship disposed between frustoconical surfaces and a conduit centrally therethrough, the combination of a base member having radially opened mating frustoconical surfaces defining a central gas-conducting conduit through the center one thereof enlarged at its forward end to internally define a forward-facing shoulder element therein and a cylindrical wall defining a compartment receiving oxygen centrally from one of said gas passages, retainer nut means secured to said head member to clamp said frustoconical surfaces in sealing relationship against each other and having a cylindrical surface beyond said base member, an elongated core means having a conduit centrally therethrough and a cylindrical external wall portion with a wall at its inner end received in said compartment and a tapering external surface of approximately 8* at its forward end with longitudinal channels recessed therein, one of said cylindrical wall portions having a radially extending annular groove, resilient means of heat-resistant material carried by said annular groove to seal in sliding relationship against the other cylindrical wall portion under constant sealing pressure, a sleeve member having a tapering internal surface corresponding with and extending a greater distance than said external tapering surfaces at the forward end and a shoulder member at the inner end thereof defining a cylindrical surface received in the other cylindrical surface, one of said cylindrical surfaces having a radially extending annular groove, resilient means of heat resistant material carried by the last-mentioned annular groove to engage and seal the space between said cylindrical surfaces, retainer means interconnecting said sleeve member shoulder element and said retainer nut to draw said sleeve member and core member towards the head, and compression spring means in said compartment between said shoulder element and said core wall compressed by said core movement to bring said tapering surfaces into heat transfer contact with each other under pressure to convert said channels into preheat conduits with discrete ports and provide a tapering annular passage opening into said preheat conduits, and said base member having conduits interconnecting other of said gas passages to said annular passage.

Claim 19

In a flame cutting torch of the class described a head member with a plurality of gas passages opening in radially spaced relationship disposed between frustoconical surfaces and a conduit centrally therethrough, the combination of a base member having radially opened mating frustoconical surfaces defining a central gas-conducting conduit through the center one thereof enlarged at its forward end to internally define a forward-facing shoulder element therein and a cylindrical wall defining a compartment receiving oxygen centrally from one of said gas passages, retainer nut means secured to said head member to clamp said frustoconical surfaces in sealing relationship against each other and having a cylindrical surface beyond said base member, an elongated core means having a conduit centrally therethrough and a cylindrical external wall portion with a wall at its inner end received in said compartment and a tapering external surface of approximately 8* at its forward end with longitudinal channels recessed therein, one of said cylindrical wall portions having a radially extending annular groove, resilient means of heat-resistant material carried by said annular groove to seal in sliding relationship against the other cylindrical wall portion under constant sealing pressure, a sleeve member having a tapering internal surface corresponding with and extending a greater distance than said external tapering surfaces at the forward end and a shoulder member at the inner end thereof defining a cylindrical surface received in the other cylindrical surface, one of said cylindrical surfaces having a radially extending annular groove, resilient means of heat resistant material carried by the last-mentioned annular groove to engage and seal the space between said cylindrical surfaces, retainer means interconnecting said sleeve member shoulder element and said retainer nut to draw said sleeve member and core member towards the head, and compression spring means in said compartment between said shoulder element and said core wall compressed by said core movement to bring said tapering surfaces into heat transfer contact with each other under pressure to convert said channels into preheat conduits with discrete ports and provide a tapering annular passage opening into said preheat conduits, and said base member having conduits interconnecting other of said gas passages to said annular passage.

Claim 20

In a device of the class described the combination of: an elongated core means having a cylindrical external wall portion with a wall at its inner end and a tapering external surface at its forward end with longitudinal channels recessed therein, a base member having a central gas-conducting conduit enlarged at its forward end to define internally a forward-facing wall element therein and a cylindrical wall receiving said external cylindrical wall portion, one of said cylindrical wall portions having a radially opening annular groove, means carried by said annular groove to seal in sliding relationship against the other cylindrical wall portion, a sleeve member having a tapering internal surface corresponding with said external tapering surfaces at the forward end and a shoulder element at the inner end thereof, a retainer means for interengaging said sleeve member and said base member to support them in rigid relationship, and compressed resilient means disposed between one of said means and one of said elements bringing saiD surfaces into heat transfer contact with each other under pressure to convert said channels into conduits converging at approximately 8*0 to the axis of said tapering internal surfaces and terminating with discrete ports.

Claim 21

In a device of the class described the combination of: an elongated core means having a cylindrical external wall portion with a wall at its inner end and a tapering external surface at its forward end with longitudinal channels recessed therein, a base member having a central gas-conducting conduit enlarged at its forward end to define internally a forward-facing wall element therein and a cylindrical wall receiving said external cylindrical wall portion, one of said cylindrical wall portions having a radially opening annular groove, means carried by said annular groove to seal in sliding relationship against the other cylindrical wall portion, a sleeve member having a tapering internal surface corresponding with said external tapering surfaces at the forward end and a shoulder element at the inner end thereof, a retainer means for interengaging said sleeve member and said base member to support them in rigid relationship, and compressed resilient means disposed between one of said means and one of said elements bringing saiD surfaces into heat transfer contact with each other under pressure to convert said channels into conduits converging at approximately 8*0 to the axis of said tapering internal surfaces and terminating with discrete ports.

Claim 22

The combination called for in claim 15 in which said resilient means includes a compression spring urging said sleeve and core into telescoping relationship.

Claim 23

The combination called for in claim 15 in which said core means has a gas conduit axially through it of a reduced size at its forward end and in communication with said central enlarged compartment, a central conduit in said base member of a size greater than said reduced size for supplying gas under pressure to said central enlarged compartment, said resilient means including a body of said gas supplied to said central enlarged compartment under pressure to urge said core means into said sleeve member.

Claim 24

The combination called for in claim 17 in which said resilient means includes a spring interengaging one of said means and one of said members to urge said sleeve member over the core means.

Claim 25

The combination called for in claim 15 in which said resilient means includes a compression spring and a body of gas under pressure in said compartment.