Machine for knitting cord-like structures
AssigneeLawson-Hemphill, Inc.
InventorsJohn B. Lawson, Stephen C. Dangel
Life of this patent
Estimating the term…
Abstract
A knitting machine is provided having one or more needles for knitting from one or more strands a variety of cord-like structures formed of one or more wales of knitted stitches. The machine is particularly useful for the manufacture of knitted yarns, either from strands of continuous or spun filaments or from a roving or sliver of staple fibers.
Claims32
A machine for knitting cord-like structures having
- a. at least one needle,
- b. at least one movable guide for delivering a strand to the needle,
- c. a crank for imparting reciprocatory movement to the needle,
- d. a timing pulley connective operatively to the crank to drive the crank,
- e. a shaft for imparting strand delivery movement to the guide,
- f. the crank and the shaft having axes disposed in directions transverse to each other,
- g. a timing pulley connected to the shaft and
- h. an endless twisted timing belt connecting the shaft pulley to the crank pulley for driving the needle crank to cause the needle to reciprocate in timed relation to the strand delivery movement of the guide.
A machine for knitting cord-like structures having
- a. a pair of needles,
- b. a pair of movable guides for delivering strands to the needles,
- c. a pair of co-axial horizontal axis cranks for imparting reciprocatory movement to the needles,
- d. a timing pulley connected operatively to each crank to drive the cranks,
- e. a pair of spaced vertical axis shafts for imparting strand delivery movements to the guides,
- f. a timing pulley connected to each shaft and
- g. an endless twisted timing belt entrained about all the timing pulleys to cause the needles to reciprocate in timed relation to the strand delivery movements of the guides.
A machine for knitting cord-like structures from at least one strand comprising:
- a. a support frame for the machine,
- b. a drive unit mounted on the frame,
- c. at least one needle having capacity for reciprocatory movement,
- d. first drive means connecting said drive unit and said needle for imparting reciprocatory movement to the needle,
- e. said first drive means including a rotating crank connected to the needle for imparting movement to the needle,
- f. at least one strand guide for wrapping a strand about the needle during its reciprocatory movement, to form a chain of knitted stitches from the strand, and
- g. second drive means connecting said drive unit and said strand guide for imparting simultaneously reciprocatory and oscillatory strand delivery movements to the guide,
- h. said second drive means including a rotating crank connected to the strand guide for imparting movement to the strand guide.
A machine for knitting cord-like structures directly from a roving of staple fibers comprising
- a. at least one needle,
- b. drafting means for the roving,
- c. a rotary yarn guide disposed between the drafting means and the needle for delivering drafted roving to the needle,
- d. a rotatable drive shaft,
- e. first drive means connecting the shaft to the needle for imparting reciprocatory movement to the needle and
- f. second drive means connecting the shaft to the rotary guide for imparting rotary motion to the guide in timed relation to the reciprocatory movement of the needle,
- g. said two drive means being driven in timed relation to each other.
Dependencies are inferred from the claim text.