Threadwinder.info - Tension Devices (click on pictures for close-ups)

Cro-Knit Tension Device   EZ Knit Tension Device         Evenit Precision Knitting     Slightly different Evenit           Ribbon / Bulky-Yarn Tensioner
  appears most similar to     appears most similar to         Rings appear most simlar     Precision Knitting Rings           Evenit Precision Knitting Ring
      patent 2,142,608                 patent 2,472,702                   to patent 2,434,609

Copy Patent #s to: pat2pdf.org to See or Print Hand Knitting & Crocheting Yarn/Thread Tension Devices & Guides Patents.

 
PATENT DATE	PATENT  #    TITLE [DETAILS],  INVENTOR,  LOCATION
Jul. 18, 1916   1,191,457    Crochet Ring [thread guide, fingers to provide tension],  Sabina Penrod, Nebraska.
Dec. 12, 1916   1,208,085    Thread Guide [and tension device],  Harry Branley, Pennsylvania.
Dec. 26, 1916   1,210,320    Tensioning Device for Crocheting,  Frank S. Hughes, Pennsylvania.
Aug.  7, 1917   1,235,605    Thread-Guiding Device for Crocheting,  Teckla Sauer, Wisconsin.
Oct. 16, 1917   1,243,162    Tension Device for yarn,  Horace F. Gruman, Michigan.
Oct. 29, 1918   1,282,953    Thread Guiding Device [also provides tension],  Teckla Sauer, Wisconsin.
Oct. 25, 1921    D059,449    Tension Device for Knitting,  Santo Abate & John Buonincontri, Italy.
Jul. 29, 1923   1,502,799    Finger Ring for Crocheting [tension device],  Helen R. Rees, Oregon.
Nov. 13, 1923   1,473,953    Thimble [for knitting, crocheting and the like],  Eric Dart, Kelowna, BC, Canada.
Mar. 23, 1926   1,577,658    Finger Ring for Crocheting [tension device],  Helen R. Rees, Oregon.
Jan. 12, 1935   2,021,946    Tension Device for Hand Knitting & Crocheting,  Briscoe Riely, Maryland.
Oct. 11, 1938   2,133,221    Crochet Ring [guide to prevent irritation of flesh],  Robert G. White, Ohio.
Jan.  3, 1939   2,142,608    Tensioning Device,  Walter E. Hockert, Iowa.
Sep.  5, 1939   2,172,074    Knitting Accessory [thread guide with tension clip],  Ivar V. Thulin, Pennsylvania.
Jun. 10, 1941   2,244,903    Manual Knitting Accessory [guide & tension device],  Mimi S. & Robert P. Walk, New York.
Mar.  9, 1943   2,313,684    Knitting Accessory [& tension device, improvement of 2,172.074],  Ivar V. Thulin, Pennsylvania.
Jan. 13, 1948	2,434,609    Hand Knitting or Crocheting Device,  Anne Coffey, New York.
Jun.  7, 1949   2,472,702    Knitting Finger Ring [tension device],  Hyman Greenstein, New York.
Oct.  3, 1950   2,524,157    Knitting Accessory [guide for 2 yarns],  Viktoria Beirer, Austria.
Jan. 30, 1951   2,539,568    Guide & Tensioner for Crocheting Thread,  Homer E. Booth, Washington.
Jun. 22, 1954   2,681,772    Tension Mechanism & Yarn Support for Knitting,  Joseph Charney, Illinois.
Jul. 26, 1977   4,037,433    Hand Knitting Aid, [tensioning device],  Blanche V. Weber, Colorado.
Feb.  1, 1983   4,370,870    Crocheting Aid [for disabled right hand],  Norma J. Krob & George Spector, New York.
Dec. 22, 1987   4,713,947    Comfort Ring [for yarn flow with arthritic fingers],  William K. Collins, New York.
Feb. 12, 1991	4,991,410    Method & Apparatus for Improving Crocheting Procedures,  Jean Donatelli, Sparks, NV
Jun. 30, 1992   5,125,245    Knitting Yarn Guide [for 2 or more yarns],  Junichi Kuwabara, Japan.
Jul. 28, 1998	 D396,344    Crochet Finger Guard,  Julia Wolfert, Middleburg, Florida.