Monarch Knitting Machinery Corporation

David Pernick

Koji Tsuchiya

A durable cylinder assembly for a circular knitting machine is described. The cylinder assembly includes a cylinder body having an outer cylindrical face and an upper face including a plurality of spaced-apart substantially radial channels. A shaped circumferential indentation circumscribes an upper end of the outer cylindrical face, and a hardened circular band is matingly engaged with the indentation to define a durable bearing surface for reciprocating elements the knitting machine, e.g. the sinkers and/or needles. The hardened band is preferably formed of heat treated metal and has a discontinuous circumference defined by a single cut, which is preferably single or double biased. The indentation provided in the cylinder body is desirably in the form a right angle, and the band preferably has a rectangular cross-sectional configuration so as to mate securely with the indentation. A method of improving the durability of a knitting machine cylinder by applying such a hardened circular band to the cylinder is also described.

Knitting machine cylinder having a hardened top insert ring and method

A circular knitting machine with needles having operating butts of predetermined height includes a stitch cam unit for raising and lowering the needles by engaging the operating butts. The cam system includes a support body and a needle raising cam block having upper and lower cam members fixed to the support body and having corresponding upwardly inclined lower and upper butt engaging surfaces which are spaced from each other a distance substantially corresponding to the dimensions of the predetermined height of the needle butts. The upper cam member also includes a downwardly inclined lower butt engaging surface extending from the top portion of the upwardly inclined lower butt engaging surface for engagement with the needle butts. A stitch cam member has a downwardly inclined lower butt engaging surface cooperating with the downwardly inclined lower butt engaging surface of the needle raising cam. A lower landing cam member has an upper butt engaging surface spaced from the lower butt engaging surface a distance substantially corresponding to the dimensions of the predetermined height of the needle butts to define a closed track herebetween. The stitch cam member and lower landing cam member are movable along an inclined angle relative to the upper and lower cam members for obliquely moving together the upper stitch cam member and the lower landing cam member to the change the stitch forming level of the needles. The cooperating surfaces of the lower butt engaging surface ensure that the upper and lower butt engaging surfaces forming the downwardly inclined closed track remain substantially parallel when the stitch forming level is changed.

Cam system for circular knitting machine

An attachment for use with multi-feed circular knitting machines of the type having a rotary needle cylinder and having yarn striper boxes at the feeds thereof. The boxes serving to change and to cut and clamp the yarns fed to and knit by the machine during the making thereon of coursewise striped fabric. The yarn changing operation resulting in undesirably long unknit terminal portions of the changed yarns extending inwardly from the inner side of the tubular fabric being made. The terminal portions of the yarns having cut ends. The attachment comprising a device having yarn clipping means disposed within the tubular fabric and rotating in unison with the needle cylinder to cut and to shorten the terminal portions of the changed yarns as the tubular fabric continues to be made, whereby the yarns are cut firstly by the striper boxes and secondly by the yarn clipping means.

Growing community of inventors

Glendale, NY, United States of America

David Pernick