The service device for a site or part of a site of at least partially circular shape, comprises at least one catwalk connecting a roller track, provided at the inner periphery of said site or of said part of a site, to a pivot in the neighborhood of its roof covering. The end of the catwalk on the side of said roller track is movable along the latter.

An orthopedic traction device which consists of a frame having upstanding arms attached to a base member portion, upon which a patient may recline. The upstanding arm framework has a transverse bar portion connecting two upstanding arms, and a lever arm member pivotally connected at an intermediate point of the transverse bar, the lever arm having calibrated graduations. A calibrated weight is slidably mounted on the graduated lever arm. There is a movable limit collar having a locking screw for...

Apparatus for transferring workpieces delivered at random to a supply conveyor are transferred to a discharge conveyor to be deposited thereon in regular spaced relation by tong-like grippers which are carried by a rotatable turn-table conveyor disposed above the supply and discharge conveyors. The grippers descend to grip a workpiece arrested by a stop at the output end of the supply conveyor and when the workpieces are gripped the grippers and workpieces are raised for movement by the turn-tab...

A latching device particularly suited for use in establishing a substantially motionless connection between a stationary receiver and a movable latching mechanism. The latching mechanism includes a pivotally supported restraining hook continuously urged into a capturing relationship with the receiver, characterized by a spring-biased pawl having a plurality of aligned teeth projected from one surface thereof seated in the surface of the throat of the hook and positionable into restraining engage...

A device for filtering liquids such as blood and other body fluids to separate the fluid and particulate components thereof and to confine the particulate content. An open-ended inner tube is provided at its lower end with an integral flexible lip which slidably and sealingly engages the inside surface of an outer tube containing the liquid to be filtered. Within the inner tube's lower end is a retainer sleeve having a flow passage extending axially therethrough. A filter membrane extends over o...

A fastener device for fastening papers or the like to a backing member including a strip or prong member having a central portion and bendable prong end portions on which papers are to be impaled and an overlay member for fixing the strip member to the backing member. The overlay member has an intermediate portion adapted to overlie the central portion of the strip member and also has end portions having a pair of apertures through which the prong end portions extend. The overlay member has adhe...

A drive-in anchor device for association with preformed holes in a support surface and which includes a plurality of spaced, sharp crested annular rings along the shank of the device. The plurality of rings including alternating large and small diameter rings.

A locking device is provided, which may be of the cylinder-type, and includes a lock body adapted to be mounted on a door or other surface, said body having a plurality of aligned bores or pin chambers therein, a key barrel rotatably carried by said lock body, having a plurality of aligned bores or pin chambers formed therein which are in alignment with respective bores of said lock body. The barrel also includes a key passage for inserting a key therein for rotating the barrel between open and ...

A locking device especially adapted to secure relatively movable concentric members together. The device is particularly useful for locking a bearing on a shaft or within a housing. Broadly, the device includes a locking part disposed between first and second concentric members and biased into a frictional engagement with a first of the members so that when such member moves relative to the second member, the locking part is moved frictionally engaging the second member for locking the members t...

A clamping device is disclosed for the purpose of fastening or attaching conduit to a beam or the like. The device is so cast in a mold that three critical surfaces are drafted parallel to each other whereby proper perpendicular relationship of a clamping bolt with a conduit cradling surface is established.