A tunable shell-less, rimless drum utilizes a multiplicity of tuning assemblies positioned about the frame of a pretensioned or untensioned standard drum head. Each tuning assembly engages the frame and avoids tone impairing deformation of the drum membrane during tuning so as to preserve the natural tonal quality of the drum. A pivotably mounted lever at the bottom of the tuning assembly bears against a tuning band which engages the drum membrane, and cooperating notches on tuning band and leve...

The present invention deals with a chute for a kiln intake housing of a rotary tubular kiln or the like, the chute having a lining composed of a refractory material and a double-walled, inwardly facing collar disposed at the lower end thereof, the collar functioning to support the lower end of the refractory lining within its metal jacket and the collar being equipped with a special coolant circulating device. The inner end of the collar is composed of support segments which are connected to eac...

A drum hoist or winch in which at least one circular cam lobe mounted eccentrically on an axle overlapping the axle is interconnected with a like circular cam lobe mounted on a second axle by inboard linkage whereby rotation of one axle will rotate the other axle in unison. A hoist drum mounted concentrically with at least one of the axles can thus be rotated in unison with the other axle to wind or unwind one or more cables thereon. A preferred embodiment has three circular cam lobes mounted ec...

The safety system in a hoist having a motor with a motor shaft, a gear reduction unit, a drum, a safety brake drivingly coupled on an operating element on or close to the drum in which a mechanical out-of-sync detector produces a unidirectional brake-setting output from inputs from the drum and the motor shaft, the unidirectional brake-setting rotational output for setting the brake. In a preferred embodiment, an error correction is made into the detector for obtaining a first unidirectional out...

A method of removing ink from an ink drum wherein the plunger remains substantially uncontaminated which comprises positioning an open ended plastic sleeve over the drum of ink, gathering the edges of one end of the sleeve together, inserting the gathered edges of the sleeve through an aperture in a collar having a diameter substantially equal to the inside diameter of the drum, positioning that portion of the sleeve that has been inserted through the collar about the container again and whereby...

A ring is mounted, in horizontally surrounding relation, on a plastic drum adjacent but short of the upper end thereof; the ring being fixed on the drum, and structurally designed to provide an annular lip extending coaxially about the drum in radially outwardly spaced relation to the drum sidewall whereby the lip is exposed for engagement by the gripping device of a lift-type industrial truck employed to lift and transport such plastic drum.

The invention provides a rotary cutter drum for use in apparatus for cutting continuous web material into discrete lengths in which the polar moment of inertia is kept to a minimum. The drum consists of a prefabricated metal load bearing member to which a block, on which a knife blade is mounted, and a balancing member are secured. The load bearing member, the block and the balancing member are then covered in a light-weight material such as an integral skin polyurethane rigid foam material arra...

A portable steel drum assembly for use in a marching band includes a first steel drum having a defined playing surface including a first set of predefined indentations defining a first set of notes and a second steel drum having a defined playing surface including a second set of predefined indentations defining a second set of notes. The first and second steel drums each have a diameter less than twenty-two inches providing the steel drum assembly with sufficient lightweightness and compactness...

This invention relates to an improvement in a shock-proof bearing for a heavy drum which is rotatably supported on roller and is adapted to be driven by a gear drive, the axial spacing between the drum and the roller or the gear drive remaining constant for every spring-support position, the improvement comprising that the roller and a driving pinion are integral, and spring support elements mounted between a casing of the roller and a hub thereof.

Apparatus for conveying cigarettes by means of one or more fluted drums has a frame including spaced front and back walls defining between them a suction manifold; a fluted drum in front of the frame; a tubular drum-carrying member which extends through an opening in the front wall of the frame, engages and seals in or around an aperture in the rear wall of the frame, and has a flange by which it is secured to the front wall of the frame, the drum being rotatable around the tubular member; and a...