Needle motion

Abstract

The invention is a new container for food and for cooking food, entirely or partially made from a plastic film, provided with one opening (B) suited to be closed and hermetically sealed after the introduction of the food to be cooked and comprising at least one valve (L) made from a material having a lower melting point than said plastic film, so that the increase in temperature and pressure inside the container during the cooking of the food causes said valve (L) to open and part of the steam generated inside the container to be discharged.

1 . A needle motion, especially for production of a links-links or a reversible knitted fabric on a knitting machine including at least two needle beds, such as a flat two-bed or four-bed knitting machine or a double-cylinder knitting machine, the needle motion comprising:
 a plurality of knitting needles, each needle having a stem and two knitting needle heads arranged at opposed ends of said stem; and   for each needle, a pair of actuation sliders, each slider being provided with a projection for engaging the corresponding needle, each needle head comprising a spring hook terminating at a tip, the stem of said needles being provided with a pair of curved stem portions, each curved portion being arranged in the vicinity of a corresponding one of said tips, said curved stem portions having a convexity facing towards the respective tip, each curved stem portion being provided with a first recess for the respective tip and with a second recess for engagement by the projection of the corresponding sliders.   
     
     
         2 . A needle motion according to  claim 1 , wherein each actuation slider includes at least a bearing surface for the hook of the knitting needle, a bevel for causing a spontaneous oscillatory deviation of the actuation slider and pivot point around which said slider oscillates during said spontaneous oscillatory deviation. 
     
     
         3 . A needle motion according to  claim 2 , wherein each actuation slider further includes at least one rigid butt for controlling an axial translation. 
     
     
         4 . A needle motion according to  claim 2 , wherein each actuation slider is provided with a further butt for controlling an oscillatory deviation. 
     
     
         5 . A needle motion according to  claim 1 , wherein to at least some of said actuation sliders a selector is combined, for selectively activating or de-activating the corresponding actuator slider. 
     
     
         6 . A needle motion according to  claim 5 , wherein said selector is swingingly connected to the corresponding actuation slider. 
     
     
         7 . A needle motion according to  claim 6 , wherein said selector includes a swinging auxiliary actuation slider pivotally connected by means of a joint to its corresponding actuator slider, the swinging auxiliary actuation slider being provided with at least one butt designed for application of an axial translation, and a butt for controlling an oscillatory deviation of the actuation slider. 
     
     
         8 . A needle motion according to  claim 1 , wherein each needle is combined with two actuation sliders of the same type. 
     
     
         9 . A needle motion according to  claim 1 , wherein each needle is combined with two actuation sliders of different type. 
     
     
         10 . A needle motion according to  claim 1 , wherein a patterning device is combined with at least one actuation slider of said needles. 
     
     
         11 . A knitting machine comprising:
 at least two needle beds;   a plurality of knitting needles and corresponding actuating sliders in each needle bed, for controlling knitting movements and transfer movements of said needles from one needle bed to the other, wherein each needle includes a stem and two knitting needle heads arranged at opposed ends of said stem, each needle head including a spring hook terminating at a tip, the stem of said needles being provided with a pair of curved stem portions, each curved portion being arranged in the vicinity of a corresponding one of said tips, said curved stem portions having a convexity facing towards the respective tip, each curved stem portion being provided with a first recess for the respective tip and with a second recess for engagement by a projection of said actuating sliders.   
     
     
         12 . A knitting machine according to  claim 11 , wherein for each needle a pair of actuating sliders is provided, each arranged in one of said needle beds. 
     
     
         13 . A knitting machine according to  claim 11 , selected from the group including: flat knitting machines with two or four-needle beds, double-cylinder knitting machines. 
     
     
         14 . A knitting needle comprising:
 a stem; and   two knitting needle heads arranged at opposed ends of said stem, each needle head including a spring hook terminating at a tip, the stem of said needle being provided with a pair of curved stem portions, each curved portion being arranged in the vicinity of a corresponding one of said tips, said curved stem portions having a convexity facing towards the respective tip, each curved stem portion being provided with a first recess for the respective tip and with a second recess for engagement by an actuation slider.   
     
     
         15 . A needle motion according to  claim 3 , wherein each actuation slider is provided with a further butt for controlling an oscillatory deviation. 
     
     
         16 . A needle motion according to  claim 2 , wherein to at least some of said actuation sliders a selector is combined, for selectively activating or de-activating the corresponding actuator slider. 
     
     
         17 . A needle motion according to  claim 3 , wherein to at least some of said actuation sliders a selector is combined, for selectively activating or de-activating the corresponding actuator slider. 
     
     
         18 . A needle motion according to  claim 4 , wherein to at least some of said actuation sliders a selector is combined, for selectively activating or de-activating the corresponding actuator slider. 
     
     
         19 . A needle motion according to  claim 5 , wherein to at least some of said actuation sliders a selector is combined, for selectively activating or de-activating the corresponding actuator slider. 
     
     
         20 . A needle motion according to  claim 19 , wherein said selector is swingingly connected to the corresponding actuation slider. 
     
     
         21 . A needle motion according to  claim 20 , wherein said selector includes a swinging auxiliary actuation slider pivotally connected by means of a joint to its corresponding actuator slider, the swinging auxiliary actuation slider being provided with at least one butt designed for application of an axial translation, and a butt for controlling an oscillatory deviation of the actuation slider. 
     
     
         22 . A knitting machine according to  claim 12 , selected from the group including: flat knitting machines with two or four-needle beds, double-cylinder knitting machines.