Mechanism for driving a spinning rotor of the open-end spinning apparatus

Claim 2

In a mechanism for driving the spinning rotor of each spinning unit of an open-end spinning apparatus wherein a shaft of said rotor is rotatably supported by a pneumatic bearing mounted in a rotor holder of said spinning unit, the improvement comprising a cylindrical bearing member mounted to project inwardly in said pneumatic bearing whereby said rotor shaft is rotatably pneumatically supported by means of said cylindrical bearing member, a pair of cylindrical chambers formed in said pneumatic bearing at positions axially beyond opposite ends of said cylindrical member, a pair of flanges rigidly secured to said rotor shaft in the proximity of and beyond the axial ends of said cylindrical bearing member whereby said flanges are positioned in separate said cylindrical chambers, means for supplying pressurized air into a space between said rotor shaft and said cylindrical bearing member and also into spaces between said flanges and said cylindrical bearing member in uniform condition, means for discharging said supplied air from said spaces to the outside of said pneumatic bearing, and means for sealing a clearance between said rotor shaft and said pneumatic bearing at both ends of said pneumatic bearing.

Claim 3

An improvement of the mechanism for driving a spinning rotor of the open-end spinning apparatus according to claim 1, further comprising a pneumatic turbine coaxially connected to said rotor shaft, said pneumatic turbine being provided with an inlet conduit for receiving said pressurized air from a supply source and an outlet aperture for discharging said pressurized air therefrom, wherein said means for supplying pressurized air into said space between said rotor shaft and said cylindrical bearing member is connected to said discharging aperture of said turbine.

Claim 4

An improvement of the mechanism for driving a spinning rotor of the open-end spinning apparatus according to claim 2, wherein said supplying means comprises a plurality of connecting passages connected to said outlet aperture of said pneumatic turbine, each of said connecting passages being connected to aN inlet passage which is connected to said space between said rotor shaft and said cylindrical bearing member.

Claim 5

In a mechanism for driving the spinning rotor of each spinning unit of an open-end spinning apparatus wherein air is supplied into said spinning rotor via an inlet conduit mounted on said spinning unit and a shaft of said rotor is rotatably supported by a pneumatic bearing mounted in a rotor holder of said spinning unit, the improvement comprising a cylindrical bearing member mounted to project inwardly in said pneumatic bearing whereby said rotor shaft is rotatably pneumatically supported by means of said cylindrical bearing member, a pair of cylindrical chambers formed in said pneumatic bearing at positions axially beyond opposite ends of said cylindrical member, a pair of flanges rigidly secured to said rotor shaft in proximity to and beyond separate opposite axial ends of said cylindrical bearing member whereby said flanges are positioned in separate said cylindrical chambers, means for supplying pressurized air into a space between said rotor shaft and said cylindrical bearing member and also into spaces between said flanges and said cylindrical bearing member in uniform condition, means for discharging said supplied air from said spaces to the outside of said pneumatic bearing, means for sealing a clearance between said rotor shaft and said pneumatic bearing at both ends of said pneumatic bearing, said discharging means being connected to said inlet conduit so that the discharged air from said pneumatic bearing is fed into said spinning rotor.

Claim 6

In a mechanism for driving the spinning rotor of each spinning unit of an open-end spinning apparatus wherein air is supplied into said spinning rotor via an inlet conduit mounted on said spinning unit and a shaft of said rotor is rotatably supported by a pneumatic bearing mounted in a rotor holder of said spinning unit, the improvement comprising a cylindrical bearing member mounted to project inwardly in said pneumatic bearing whereby said rotor shaft is rotatably pneumatically supported by means of said cylindrical bearing member, a pair of cylindrical chambers formed in said pneumatic bearing at positions axially beyond opposite ends of said cylindrical member, a pair of flanges rigidly secured to said rotor shaft in proximity to and beyond separate opposite axial ends of said cylindrical bearing member whereby said flanges are positioned in separate said cylindrical chambers, means for supplying pressurized air into a space between said rotor shaft and said cylindrical bearing member and also into spaces between said flanges and said cylindrical bearing member in uniform condition, means for discharging said supplied air from said spaces to the outside of said pneumatic bearing, means for sealing a clearance between said rotor shaft and said pneumatic bearing at both ends of said pneumatic bearing, said discharging means being connected to said inlet conduit so that the discharged air from said pneumatic bearing is fed into said spinning rotor.

Claim 7

An improvement of the mechanism for driving a spinning rotor of the open-end spinning apparatus according to claim 4, further comprising a pneumatic turbine coaxially connected to said rotor shaft, said pneumatic turbine being provided with an inlet conduit for receiving said pressurized air from a supply source and an outlet aperture for discharging said pressurized air therefrom, wherein said means for supplying pressurized air into said space and said rotor shaft and said cylindrical bearing member is connected to said discharging aperture of said turbine.