A drive mechanism for driving a plurality of components arranged in a ring shape to move back and forth in a radial direction, the drive mechanism is disposed in an annular disk, each component has a shoulder, the drive mechanism includes: a circular body coaxial disposed on the annular disk; a drive wheel rotatably disposed coaxially with the circular body; a cam ring disposed coaxially with the drive wheel, having a diameter smaller than that of the drive wheel, and including at least one cam; a plurality of pushing elements provided for contacting the shoulder of the respective components and each having a driven portion abutted against the cam ring, so that the pushing elements are moved toward or away from the axis, and the pushing elements contact the shoulders to drive the components to move in the radial direction or in the direction of the axis.

A flexible hose reinforced with at least two superimposed textile layers includes an inner load-bearing tubular layer defining a longitudinal axis and made of a first polymeric or elastomeric material, an outer cover layer made of a second polymeric or elastomeric material, and a first and a second reinforced textile layer mutually superimposed and interposed between the inner and outer layers. The first and the second textile layers are both knitted textile layers with tricot chain stitches having courses of stitches and rows of stitches, the courses of stitches being substantially parallel to each other and to the longitudinal axis, the rows of stitches having opposite inclinations with respect to the longitudinal axis. A production line and a method of manufacturing such hose.

A flexible hose reinforced with at least two superimposed textile layers includes an inner load-bearing tubular layer defining a longitudinal axis and made of a first polymeric or elastomeric material, an outer cover layer made of a second polymeric or elastomeric material, and a first and a second reinforced textile layer mutually superimposed and interposed between the inner and outer layers. The first and the second textile layers are both knitted textile layers with tricot chain stitches having courses of stitches and rows of stitches, the courses of stitches being substantially parallel to each other and to the longitudinal axis, the rows of stitches having opposite inclinations with respect to the longitudinal axis. A production line and a method of manufacturing such hose.

The present device is a circular knitting machine, also known as a circular sock machine, designed to mostly be manufactured from polymers, such as plastics, or other materials that are typically lighter and have other physical properties, such as low hardness and tensile strength, compared to steel, from which such machines have historically been manufactured. The present design allows for the use of modern manufacturing techniques, such as 3-D printing in which a filament is often used comprising various types of polymers. The present device can also comprise a ribber apparatus, which is also designed to allow for most of its parts to be manufactured from polymers. However, in certain embodiments, some of the parts, such as needles, springs, and bolts can still be made from steel.

The machine for making a shoe upper comprises a reel holder rack, a dial and a sinker crown, a needle cylinder with a vertical axis and forward and backward movement having a plurality of grooves, inside of which the needles are slidable, controlled by selection thereof, a cup element, at least four feeders assembled along the circumference of the machine, guide, first brake, first recovery means for recovering each of the threads to be fed to said needles for forming the upper and a suction bell for unloading said upper, said selection of said needles comprising a pre-selection cam defining a working path and a non-working path of the heels of the elastic jacks of the corresponding needles and sub-needles of said cylinder and a lifting cam defining a first path executing working stitches and a second lowered path with respect to the first path executing tuck stitches.

The machine for making a shoe upper comprises a reel holder rack, a dial and a sinker crown, a needle cylinder with a vertical axis and forward and backward movement having a plurality of grooves, inside of which the needles are slidable, controlled by selection thereof, a cup element, at least four feeders assembled along the circumference of the machine, guide, first brake, first recovery means for recovering each of the threads to be fed to said needles for forming the upper and a suction bell for unloading said upper, said selection of said needles comprising a pre-selection cam defining a working path and a non-working path of the heels of the elastic jacks of the corresponding needles and sub-needles of said cylinder and a lifting cam defining a first path executing working stitches and a second lowered path with respect to the first path executing tuck stitches.

A circular machine for knitting, hosiery or the like, with sinker actuation device, comprising a needle cylinder; the needle cylinder has, on its lateral surface, a plurality of axial grooves, each of which accommodates a needle that can move on command along the corresponding axial groove in order to pick up at least one yarn dispensed at at least one feed or drop and form knitting; the machine also comprises needle actuation cams, which face the lateral surface of the needle cylinder and define paths that are extended around the axis of the needle cylinder and can be engaged by at least one heel of the needles, which protrudes from the lateral surface of the needle cylinder, in order to actuate the movement of the needles along the corresponding axial groove with respect to the needle cylinder as a consequence of the rotation of the needle cylinder about its own axis with respect to the needle actuation cams and the at least one feed.

A circular machine for knitting, hosiery or the like, with sinker actuation device, comprising a needle cylinder; the needle cylinder has, on its lateral surface, a plurality of axial grooves, each of which accommodates a needle that can move on command along the corresponding axial groove in order to pick up at least one yarn dispensed at at least one feed or drop and form knitting; the machine also comprises needle actuation cams, which face the lateral surface of the needle cylinder and define paths that are extended around the axis of the needle cylinder and can be engaged by at least one heel of the needles, which protrudes from the lateral surface of the needle cylinder, in order to actuate the movement of the needles along the corresponding axial groove with respect to the needle cylinder as a consequence of the rotation of the needle cylinder about its own axis with respect to the needle actuation cams and the at least one feed.

A cam and a cam structure of a circular knitting machine include a cam body, and the cam body is successively defined with a needle inlet groove, a needle running groove and a needle outlet groove, the needle running groove is in communication with the needle inlet groove and the needle outlet groove, a width of the needle running groove is between 3.1 mm-3.3 mm, and a knitting needle is moved in the needle running groove with a width between 3.1 mm-3.3 mm, so that increased stroke of the knitting needle due to the inertia of upward and downward movements can be reduced. The density is increased by a range of between 5 and 10 mesh per inch.

A cam and a cam structure of a circular knitting machine include a cam body, and the cam body is successively defined with a needle inlet groove, a needle running groove and a needle outlet groove, the needle running groove is in communication with the needle inlet groove and the needle outlet groove, a width of the needle running groove is between 3.1 mm-3.3 mm, and a knitting needle is moved in the needle running groove with a width between 3.1 mm-3.3 mm, so that increased stroke of the knitting needle due to the inertia of upward and downward movements can be reduced. The density is increased by a range of between 5 and 10 mesh per inch.