US 4,735,039 A · Ring rail suspension assembly

Abstract

A suspension assembly (A) for raising and lowering the ring rails (14, 14') of a textile yarn processing machine is disclosed. Vertical guide posts (18, 18') are disposed adjacent to each of the ring rails for guiding the ring rails as they reciprocate vertically. The opposed ring rails are connected by the suspension assembly which includes a parallelogram linkage comprised of a tension rod (24) pivotally connected to opposing bearing brackets (B, C) and a compression rod (26) which is pivotally connected to the opposing bearing brackets. Slide bearings (20, 20' and 22, 22') are carried by the bearing brackets (B, C) for bearing against the guide posts (18, 18'). The lengths of the compression rod and the tension rod are adjusted to bring the spaced slide bearings into light contact with an associated guide post so that the ring rails may be lifted by a lifter mechanism in unison without causing loads on the guide posts. If loads (D, E) on the ring rails are generally equal, the parallelogram suspension assembly will cancel any loads on the guide posts. Only the difference between the loads will be exerted on the guide posts.

Claims18

Dependent claims

In a textile yarn processing machine having an elongated frame with a row of spindles extending along opposed sides of said frame, front and rear vertically reciprocating ring rails extending along said rows of spindles, each said ring rail carrying a plurality of rings associated with said spindles, vertical guide posts disposed adjacent said ring rails for guiding said ring rails reciprocating vertical movements, and a ring rail lifter mechanism adapted to raise and lower said ring rails in unison, a suspension assembly for raising and lowering said ring rails, comprising:

(a) front and rear bearing brackets adapted for attachment to respective front and rear ring rails;
(b) bearings carried by said bearing brackets for contacting said guide posts;
(c) a tension rod pivotally connected between upper portions of said front and rear bearing brackets acting in tension between said bearing brackets when loaded;
(d) a compression rod pivotally connected between lower portions of said front and rear bearing brackets acting in compression between said bearing brackets when loaded;
and
(e) said tension and compression rods being generally parallel and pivotally connected to said bearing brackets in a manner that loads on said front and rear ring rails produce counterbalanced forces between said bearings and said guide posts reducing wear on said guide posts.

3 more elements

In a textile yarn twister having an elongated frame with a row of spindles extending along opposing sides of said frame and vertically reciprocating ring rails extending along said rows of spindles carrying a plurality of rings associated with spindles for guiding yarn, a plurality of opposing guide posts disposed adjacent said ring rails for guiding said ring rails as they reciprocate vertically, a ring rail lifter mechanism adapted to raise and lower said ring rails in unison, wherein the improvement comprises a suspension assembly for raising and lowering said ring rails which include:

(a) bracket means carried by opposing ring rails having bearings for contacting opposing guide posts;
and
(b) parallel linkage means interconnecting said bracket means for producing generally opposite but equal reaction forces to loads placed on said opposing ring rails effectively reducing bearing loads on said guide posts when said ring rail loads are equal and applying the differences between said loads when said ring rail loads are different so that uneven loading and wear of said guide posts is reduced.

Dependencies are inferred from the claim text.

Ring rail suspension assembly

Life of this patent

Ring rail suspension assembly

Life of this patent

Abstract

Claims18