Roving feed stop device

Claim 2

In combination with a textile yarn spinning machine having a plurality of drafting systems arranged in a series for normally receiving a corresponding series of roving strands and delivering a corresponding series of attenuated strands, apparatus for stopping feeding of a roving strand to a drafting system in the event of breakage of the attenuated strand issuing therefrom, the apparatus comprising: a plurality of roving feed stop members corresponding in number to the number of said drafting systems, each of said stop members being mounted on said spinning machine adjacent a corresponding drafting system for independent movement between a first position withdrawn from engagement with the corresponding roving strand and a second position intersecting and engaging said corresponding roving strand and further having roving engaging surfaces converging to define a cusp into which said corresponding roving strand enters on movement of said stop member to said second position, and means operatively connected with each of said roving feed stop members and responsive to actuation thereof for identifiably accumulating occurrences of supply strand interruption over an interval of time and for thereby facilitating identification of portions of the yarn forming machine requiring corrective maintenance.

Claim 3

Apparatus according to claim 1 wherein said means responsive to actuation of said stop members comprises a plurality of individually actuable counter means corresponding in number to the number of said stop members, each of said counter means being mounted adjacent a corresponding one of said stop members and being responsive to movement thereof for indentifying an occurrence of roving strand interruption by said one stop member.

Claim 4

Apparatus according to claim 2 wherein each of said counter means comprises a counter wheel member mounted for rotation and ratchet means for rotating said counter wheel member through a predetermined arc of rotation upon each occurrence of roving strand interruption by said one stop member.

Claim 5

Apparatus according to claim 2 wherein each of said counter means comprises signaling means for indicating to an operator the relative number of occurrences of roving strand interruption accumulated over said interval of time.

Claim 6

In a combination with a textile yarn spinning machine having a pluraltiy of roving strand packages, a plurality of drafting systems arranged in a series for normally receiving a corresponding series of roving strands and delivering a corresponding series of attenuated strands, and a plurality of roving guides each mounted adjacent a corresponding one drafting system for receiving and guiding a corresponding one roving strand, said guides being the only guides penetrated by said roving strands between said packages and said drafting systems, apparatus for stopping feeding of a roving strand to a drafting system in the event of breakage of the attenuated strand issuing therefrom, the apparatus comprising: a plurality of roving feed stop memBers corresponding in number to the number of said drafting systems, each of said stop members being mounted on said spinning machine adjacent a corresponding drafting system for independent movement between a first position withdrawn from engagement with the corresponding roving strand and a second position intersecting and engaging said corresponding roving strand at a point between the corresponding guide and the corresponding package and more closely adjacent said corresponding guide than said corresponding package and further having roving engaging surfaces converging to define a cusp into which said corresponding roving strand enters on movement of said stop member to said second position.

Claim 7

In a combination with a textile yarn spinning machine having a pluraltiy of roving strand packages, a plurality of drafting systems arranged in a series for normally receiving a corresponding series of roving strands and delivering a corresponding series of attenuated strands, and a plurality of roving guides each mounted adjacent a corresponding one drafting system for receiving and guiding a corresponding one roving strand, said guides being the only guides penetrated by said roving strands between said packages and said drafting systems, apparatus for stopping feeding of a roving strand to a drafting system in the event of breakage of the attenuated strand issuing therefrom, the apparatus comprising: a plurality of roving feed stop memBers corresponding in number to the number of said drafting systems, each of said stop members being mounted on said spinning machine adjacent a corresponding drafting system for independent movement between a first position withdrawn from engagement with the corresponding roving strand and a second position intersecting and engaging said corresponding roving strand at a point between the corresponding guide and the corresponding package and more closely adjacent said corresponding guide than said corresponding package and further having roving engaging surfaces converging to define a cusp into which said corresponding roving strand enters on movement of said stop member to said second position.