Abstract: A folding gear is comprised of a cylinder that is mounted to a frame for rotation. At least one clamp is arranged on the outer surface of the cylinder. The at least one clamp can be positioned by an actuator which includes a flexible toothed shell that is shaped by a non-circular section of a shaft. A hollow gear engages this flexible shell and cooperates with it to form a harmonic drive gear.

Abstract: Command path and command speed within a predetermined range are read. The predetermined range is time required for the object to move between two points on the command path. Speed command for each time is temporarily generated based on the read command path and the command speed. Frequency component that corresponds to mechanical vibration due to movement of the object and that is included in a speed command for the each time is calculated. Speed at which the frequency component becomes equal to or smaller than a preset reference value is determined as the permissible speed. Moving speed of the object is controlled so as not to exceed the calculated permissible speed.

Abstract: Improved method and apparatus for cutting or severing thin webs, especially adhesive transfer tapes, and other relatively thin materials which prevents or minimizes tearing.

Abstract: The machine cuts a roll or log (L) of web material into a plurality of small rolls (R). It includes a unit (17) rotating about an axis (A--A) parallel to the axis of the log (L) to be cut. The unit carries a cutting blade (19) rotating about an axis (B--B) parallel to the axis (A--A) of the unit (17). A driving device (61, 63) moves the cutting tool (19) into a reciprocating forward and backward motion parallel to the axis of the log (L) to be cut. At least at the time when the blade cuts the log, the blade moves parallel to the moving log at a translation speed substantially equal to the feeding speed of the log (L), so as to allow the cutting of small rolls (R) without stopping the log (L).

Abstract: The machine cuts a roll or log (L) of web material into a plurality of small rolls (R). It includes a unit (17) rotating about an axis (A--A) parallel to the axis of the log (L) to be cut. The unit carries a cutting blade (19) rotating about an axis (B--B) parallel to the axis (A--A) of the unit (17). A driving device (61, 63) moves the cutting tool (19) into a reciprocating forward and backward motion parallel to the axis of the log (L) to be cut. At least at the time when the blade cuts the log, the blade moves parallel to the moving log at a translation speed substantially equal to the feeding speed of the log (L), so as to allow the cutting of small rolls (R) without stopping the log (L).

Abstract: A web of coherent labels or coherent blanks of wrapping material is advanced along an elongated path toward a severing station where the web is cut at selected intervals by an orbiting knife in cooperation with a stationary or moving knife to yield a succession of sections of desired length. If the web is to be arrested for a shorter or longer period, it is first accelerated above its standard speed and is thereupon decelerated to zero speed during the last interval of advancement so that the length of the leader of the web extending beyond the severing station matches the desired length. Analogously, when the web is restarted, it is accelerated above the standard speed and is thereupon decelerated to such standard speed during the first interval of advancement so that the knives sever a section whose length again matches the desired length.

Abstract: The machine cuts a roll or log (L) of web material into a plurality of small rolls (R). It includes a unit (17) rotating about an axis (A--A) parallel to the axis of the log (L) to be cut. The unit carries a cutting blade (19) rotating about an axis (B--B) parallel to the axis (A--A) of the unit (17). A driving device (61, 63) moves the cutting tool (19) into a reciprocating forward and backward motion parallel to the axis of the log (L) to be cut. At least at the time when the blade cuts the log, the blade moves parallel to the moving log at a translation speed substantially equal to the feeding speed of the log (L), so as to allow the cutting of small rolls (R) without stopping the log (L).

Abstract: A method and apparatus for the operation of a skewed orbiting saw which is employed for transversely cutting continuously advancing elongated lengths of multi-ply material into shorter lengths, the means for varying the speed of advance of the lengths of material.

Abstract: Stringed instruments such as a guitar or the like that includes a head, a neck extending between the head and a body, tremolo apparatus having a base mounted on the body, a string mount pivotally mounted on the base, a handle assembly for selectively pivoting the string mount in a first direction from a datum position to increase the tension in the strings and alternately in a second direction from the datum position to decrease the tension in the strings, a stop member to limit the pivotal movement of the string mount in the second direction to the datum position when no manual force is being applied to the handle assembly while permitting the handle assembly being manually pivoted in the second direction from the datum position, spring mechanism constantly resiliently urging the stop member into abutting relationship with the base, skate mechanism mounted on the base for selectively adjusting the height of the strings, and truss mechanism mounted by the neck to counterbalance the pull of the strings that in

Abstract: In a multi-slide wire and strip forming machine, an improvement that enhances the flexibility of the machine primarily from the standpoint of providing increased forming time relative to feeding time. The machine includes a wire forming means operable at the work station in response to the machine camshaft and operable over a predetermined forming. Wire feeding means is also included operable in response to the camshaft over a predetermined feeding period. An improved gearing arrangement is provided intercoupling the camshaft and the wire feeding means and configured to provide during a full camshaft rotation, different intervals of the predetermined forming and feeding periods, respectively.

Abstract: A rotary die cutter system minimizes the amount of scrap between successive blanks cut from web material by holding the web against backward movement at a position spaced upstream from the nip defined by the die and anvil cylinders, retracting the cut leading end of the web through a predetermined distance by means of a fluid pressure cylinder in response to release of the web by the cut-off knife at the trailing edge of the die on the die cylinder such that on the next cycle, the leading edge of the die will engage the web at a position spaced so close to the retracted leading end of the web that contiguous portions of a single blank can be cut from the web during successive revolutions of the die cylinder.

Abstract: A rotary die cutter system the amount of scrap between successive blanks cut from web material by holding the web against backward movement at a position spaced upstream from the nip defined by the die and anvil cylinders, retracting the cut leading end of the web through a predetermined distance in response to release of the web by the cut-off knife at the trailing edge of the die on the die cylinder such that on the next cycle, the leading edge of the die will engage the web at a position spaced close to the leading end of the web.

Abstract: A cutting device for a belt-like object is characterized by a pair of feed rollers and another pair of feed rollers which hold from both sides an object being supplied to be cut in succession. The rollers rotate at the same speed and are mounted in a horizontal direction respectively above and below the cutting position. The rotation of a main shaft driven by a motor is transmitted to a driving shaft of the pair of feed rollers placed above the cutting position through the main driving wheel of a one-way clutch. The rotation of the main shaft is also transmitted to a driving shaft of another pair of feed rollers placed below the cutting position through a subordinate driving wheel of said one-way clutch.

Abstract: Die cutter and process for die cutting blanks by a blade unit and an anvil opposed to each other are proposed in which either the blank feed speed or the horizontal component of speed of the blade and the anvil is controlled mechanically or electronically to make them equal to each other during the cutting operation.

Abstract: An improved die cutter is proposed in which the blanks are supported for a certain amount of movement with respect to the blank gripper so as to be fed not clamped by the gripper but by engagement with the blade and the anvil during the die-cutting. This eliminates the problem resulting from the difference between the blank feed speed and the horizontal component of speed of the blade and the anvil.

Abstract: A safety system for the drive of a cross cutter for a web of material, having an electrical or mechanical synchronizing system between the drives of the feed and cutting mechanism which is adjustable for the size of the piece to be cut and which consists of an adjustable asymmetrical mechanism and has speed control associated with the drive of the feed mechanism to limit the speed of the feed means on the basis of a signal corresponding to the setting of the asymmetrical mechanism. A function generator generates a signal to be applied to the speed control which is directly dependent thereon to define the speed value for the drive of the feed mechanism and wherein the function generator is responsive to the asymmetrical mechanism for size-related, maximum permissible web velocity.

Abstract: A tool assembly includes first and second means which define between them a work station at which they periodically engage and release a moving web of material to perform a work operation, such as die cutting, on the web. A reciprocating shuttle has a pair of guide rollers on it which respectively engage the web before and after the tool means to alternately increase and decrease the work station velocity of the web by alternately decreasing and increasing the web path distance between the shuttle and the work station. The frequency of tool means movement is adjustable to adjust the repeat between work operations on the web. The shuttle means are synchronized with the tool means so that the work station web velocity at the time the tool means contact the web is substantially equal to the tangential velocity of the tool means.

Abstract: A web is reciprocated through a treatment roll pair so that a succession of treated areas is formed on the web, one of said areas being formed on each forward movement, and the reverse movements serving to enable re-positioning of the web and avoiding waste between each two said areas. Two pairs of feed rolls are provided, one pair for forward feed and one pair for reverse feed. Each feed roll pair is engageable with and releasable from the web by having separable rolls. The feed rolls are all driven from a common camshaft.

Abstract: Apparatus for die-cutting preprinted web has an adjustable web feed mechanism which is controlled by circuitry for detecting mis-registration between die-cutting and the preprinted portions of the web, of which the following is a specification.