A lifting beam comprising an elongate member carrying one or more pivotally mounted hooks for engagement of a load to be lifted, there being a balance weight pivotably mounted on the or each hook to lie on either side of the pivotal axis thereof so as to cause the hook to be biased into or from engagement with the load such that selection of the position of the balance weight enables the beam automatically to pick up or release the load when the beam is lowered on to same.

In a textile beam consisting of a pair of heads threaded onto the ends of a cylindrical barrel, relative rotation between a head and the barrel is restrained by providing on the head a plurality of screws which extend parallel to the axis of the barrel and engage threads on the head, and which are turnable into abutment with a thrust ring carried by the barrel, thereby creating an axial separating force between the head and the barrel which increases the friction in the threads connecting these ...

A beam creel with a movable support which can be automatically moved from a loading position to a yarn pay-off position and incorporates a tension control which automatically maintains the tension in a plurality of yarn sheets from a plurality of beams mounted on the creel.

An apparatus for spinning melt-spun filament yarns including a spin beam is disclosed. A polymer melt fed to a spin beam is distributed within the spin beam to a plurality of spinning cans mounted on the spin beam. To reduce costs to the manufacturer for ensuring ease of disassembly of the spin beam, as well as to avoid the need for disassembling the spin beam and having a furnace on hand, the spin beam is provided with an integrated or removably attachable regenerative heater by which the melt-...

A composite beam is disclosed. The component has spaced pairs of elongate wood members, the members of each pair being in face to face mating orientation. A generally sinuous shaped spacer rod sub assembly having spacer portions connected at junctures is provided. The elongate member pairs each having mating faces including recesses contoured to receive one of the junctures and parts of connected spacer portions. The connected spacer portions each project angularly in opposed directions from the...

A clip for attachment to the end of a main beam for a grid in a suspended ceiling. The beam has an inverted T cross section. The clip engages an identical clip on the end of another main beam to form an end to end connection. The clip has a tongue and channel that engages with a tongue and channel in the other clip of the connection.

An accelerometer includes a bottom leg, two side legs, a beam, two support strips, a mass, a loading column, and at least one resistor mounted on the beam. The two side legs extend upwardly from the bottom leg, and a lower end of each side leg is connected to the bottom leg. The beam is fixed above the bottom leg and between the side legs, and is connected to each of the side legs. The two support strips extend from the side legs toward each other, and the mass is mounted above the beam and conn...

A beam homogenizer that minimizes undesired intensity variations at the output plane caused by sharp breaks between facets in previous embodiments. The homogenizer includes a hologram made up of irregularly patterned diffractive fringes. An input beam illuminates at least part of the hologram. The hologram transmits a portion of the input beam onto an output plane. In doing so, the energy of the input beam is spatially redistributed at the output plane into a homogenized output beam having a pre...

A beam clamp having a C-shaped clamp body, which has a threaded through hole on the top side and two parallel vertical cuts on the middle, and a hanging plate, which extends downwardly from the clamp body and suspending between the two parallel cuts and has a hanging hole and a plurality of forwardly and backwardly curved and threaded semicircular flanges alternatively disposed at different elevations for the hanging of a heavy object.

An extensible beam (1) comprising: a first, elongate element (10), a second element (50) adapted to move relative to the first elongate element in order to vary the amount of overlap between the first and second elements and thereby vary the length of the beam. Wherein the first element includes first (18) and second (20) support portions and the second element includes first (52) and second (54) spaced apart strut members for engagement with the first and second support portions respectively.