Roving frame bolster

Claim 2

A roving frame comprising a spindle assembly for twisting a strand of fibers to be wound on a bobbin, the spindle assembly including a rotatable spindle shaft and a flyer fixed to the shaft, drive means including means for rotating said spindle shaft at a desired speed and means for rotating the bobbin, resilient mounting means on said frame resiliently supporting said spindle shaft relative to the frame, said mounting means including an elongated element axially aligned with said spindle shaft, bearing means fixed to said element and radially supporting said spindle shaft, said resilient mounting means including a resilient member supporting said element at a point axially spaced from said bearing means.

Claim 3

A roving frame as set forth in claim 1 wherein said resilient member supports said element for pivotal movement.

Claim 4

A roving frame as set forth in claim 2 wherein said element is a tube concentric about said spindle shaft.

Claim 5

A roving frame as set forth in claim 3 wherein a tubular bobbin assembly is journaled about said tube element.

Claim 6

A roving frame as set forth in claim 4 wherein said bobbin assembly includes a power driven gear journaled on said tube element, said gear being closely adjacent said resilient member.

Claim 7

A roving frame as set forth in claim 5 wherein said tubular element is axially reciprocal relative to said spindle shaft.

Claim 8

A roving frame as set forth in claim 6 wherein said spindle shaft is radially fixed relative to said frame at an end opposite the end associated with said flyer.

Claim 9

A spindle mounting assembly in a roving frame comprising an elongated rotatable spindle shaft, a flyer fixed at one end of the spindle shaft, mounting means for supporting the spindle shaft on the frame, said mounting means including a support member having a radial bearing fixed adjacent to one end thereof and being pivotally mounted relative to the roving frame adjacent its other end, said spindle shaft being journaled in said radial bearing, and resilient means yieldably resisting pivotal movement of said support member and radial displacement of said shaft.

Claim 10

A spindle mounting assembly in a roving frame comprising an elongated rotatable spindle shaft, a flyer fixed at one end of the spindle shaft, mounting means for supporting the spindle shaft on the frame, said mounting means including a support member having a radial bearing fixed adjacent to one end thereof and being pivotally mounted relative to the roving frame adjacent its other end, said spindle shaft being journaled in said radial bearing, and resilient means yieldably resisting pivotal movement of said support member and radial displacement of said shaft.

Claim 11

A spindle mounting assembly as set forth in claim 8 wherein said resilient means comprises an elastic member which by deformation thereof provides the pivotal mounting of said support member.

Claim 12

A spindle mounting assembly as set forth in claim 9 wherein said support member is a circular tube concentric about said shaft and said elastic member is a cylindrical bushing engaging the outer surface of said tube.

Claim 13

A spindle mounting assembly as set forth in claim 10 wherein said elastic bushing is precompressed in a rigid mounting bracket.

Claim 14

A spindle mounting assembly as set forth in claim 10 wherein said tube is disposed within a rigid bore such that said bore limits pivotal movement of said tube.

Claim 15

A spindle mounting assembly as set forth in claim 8 wherein a friction pad, radially movable with said shaft upon vibration thereof, frictionally engages a stationary friction surface to dampen vibration of said shaft.

Claim 16

In a spindle station of a roving frame including an elongateD spindle shaft, a flyer fixed to one end of the spindle shaft, a first bearing fixed relative to a main frame, a bolster assembly including means to support a bobbin thereon and a bolster tube generally concentric about the axis of rotation of the spindle shaft, a second bearing mounted on the bolster assembly in one end of the bolster tube, means to reciprocate the bolster assembly in a direction along the axis of rotation of the spindle shaft, said spindle shaft being radially supported in said bearings with said one end cantilevered, and drive means for rotating the spindle shaft and flyer, the improvement comprising mounting means for resiliently supporting the bolster tube at an end opposite said one end and permitting the tube to pivot at such opposite end, said mounting means including means determining a predetermined deflection rate of the tube whereby lateral vibration of said spindle shaft is resisted by said mounting means through said tube.

Claim 17

In a spindle station of a roving frame including an elongateD spindle shaft, a flyer fixed to one end of the spindle shaft, a first bearing fixed relative to a main frame, a bolster assembly including means to support a bobbin thereon and a bolster tube generally concentric about the axis of rotation of the spindle shaft, a second bearing mounted on the bolster assembly in one end of the bolster tube, means to reciprocate the bolster assembly in a direction along the axis of rotation of the spindle shaft, said spindle shaft being radially supported in said bearings with said one end cantilevered, and drive means for rotating the spindle shaft and flyer, the improvement comprising mounting means for resiliently supporting the bolster tube at an end opposite said one end and permitting the tube to pivot at such opposite end, said mounting means including means determining a predetermined deflection rate of the tube whereby lateral vibration of said spindle shaft is resisted by said mounting means through said tube.

Claim 18

The combination as set forth in claim 14 wherein said resilient mounting means comprises a circular elastic bushing radially gripping the exterior of said bolster tube and mounted in a bore of a rigid bolster bracket.

Claim 19

The combination as set forth in claim 15 wherein said circular bushing is a tubular generally cylindrical bushing having peripheral relief means therein.

Claim 20

The combination as set forth in claim 16 wherein adjustment means are provided to adjustably compress said bushing in said bore and thereby adjust the deflection rate of said bushing.

Claim 21

The combination set forth in claim 14 including damping means arranged to resist lateral deflection and movement of said spindle shaft with a frictional force.