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MARCHING BANDS
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Technical Examples
- An easily removable unit that provides a means of holding the players mallets as well as affording a protective edge for the bass drum rim of a marching bass drum as used in marching bands and drum corps. The device is held in place by a rim claw on the bass drum rim that serves to hold the unit in place while also providing protection of the rim when being struck by the players mallet shaft. The claw slides in a slotted track that also holds a gripper for holding the players mallets. The rim claw is retained in the slot by a tension spring that allows the player to remove the unit by pulling the rim claw away from the rim.
- A power weaving loom includes weft thread insertion and collecting bands (6, 7). Drive units drive the bands and cause leading parts of the bands to move towards and away from one another between sides of the weaving machine and an approximately half-width position (13) of the machine. The bands include grippers (6b, 7b), which allow the weft thread to be drawn from a first side of the machine to the approximately half-width position and then to a second side of the machine. The drive units include servomotors which are coordinated to act upon the bands via motion-transmitting members with a torque that allows inward and return motions of the bands during brief shedding times, thus providing high machine picking speeds even in machines of great width.
- A musical instrument preamplifier system is provided which comprises a filtering means for splitting an input signal into two or more separate frequency bands comprising a similar phase response for each frequency band, two or more non-linear circuits, each of which distorts the input signal component of one of the frequency bands, and a summing network for recombining said frequency bands.
- A lifting apparatus for lifting and lowering a load comprises, in a known manner, a lifting drum and a drive, by which the lifting drum can be set in rotation in both directions. Serving as the pulling mechanisms are bands which are secured by one end to the lifting drum and at the other end carry a holding device for the load. At least two bands can be wound up on the lifting drum, by rotation of the latter, with accurate tracking and so as to lie one above the other, in such a way that all the turns of the bands lie one above the other. This lifting apparatus combines a high carrying capacity, high precision in the guidance of the bands and a high level of operating safety.
- A visor assembly includes a visor portion for blocking sunlight, a front portion coupled to the visor portion, a first elastic band coupled to both sides of the front portion to encircle a head, and second elastic bands coupled to a portion of the first elastic band. The second elastic bands have elasticity different from that of the first elastic band. As the elasticity of the first elastic band is different from that of the second elastic bands, the bands exerts resultant elasticity that allows the band to stretch for various head sizes and the contracting force at the overlapping portions of the first and second elastic bands is enhanced, thereby improving the wearing comfort. Furthermore, the first elastic band may be enclosed by a cover in order to satisfy a variety of consumer desires.
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