Cover for yarn twisting machine

Claim 1

A cover enclosing an overall multiple twisting machine including at least one rotary disc, said cover comprising a balloon cover having an upper section and a cover lid covering the upper section thereof, said balloon cover including an internal curved surface, the lower edge section of which curved surface is positioned lower than the lower edge section of the rotary disc of the multiple twisting machine, a cylindrical surface having a cross section which is concentric with the one rotary disc of the multiple twisting machine and which merges into the curved surface and diverges upwardly, an air exhaust port in the upper section of the balloon cover, said upper section of the balloon cover including a slanted truncated open surface lower at the front than at the rear of the balloon cover, said slanted truncated open surface being covered by said cover lid, hinge means securing the cover lid to the balloon cover at the rear of the slanted truncated open surface including a pair of lugs secured to the upper portion of the balloon cover at the opposite sides thereof and a covering plate secured to the upper portion of the balloon cover at the top thereof between the lugs including a portion in spaced relation to the uppermost portion of the cover lid in a closed position, support sections at each side of the cover lid secured to the uppermost portion of the cover lid at the rear thereof in the closed position of the cover lid whereby a portion of the support sections is adjacent the lugs on the balloon cover, pin means extending between the lugs and support sections for pivotally securing the lugs and support sections together, stopper means secured to the covering plate for limiting opening pivotal movement of the cover lid, an opening in the covering plate at the rear of the balloon cover, a rod, means pivotally securing the rod to the upper portion of one of the support sections, the other end of which rod extends through the opening in the covering plate, and a compression spring sleeved over the rod between the support section and covering plate whereby the compression spring urges the cover lid in a closed position when the cover lid is closed and urges the cover lid in an open position when the cover lid is open, and a yarn guide cylinder carried by the cover lid which is adjustable axially with respect to the cover lid.