Abstract: A heat transfer pad molded over elongated projections, such as bolts, to conduct heat to the pad interior, and securely maintain the pad on a support. A heater assembly slideably retains the pad and support, and includes replaceable heating elements, which are insulated from a mounting assembly.

Abstract: An assay employing two antibodies. A microporous carrier supports a plurality of layers, in which conjugates form between test antigens and antibodies. Quantitative results are obtained from an immobilized antibody within an indicating substrate.

Abstract: An adjustable folder is disclosed with an overlap to accomodate variable contents. As the quantity of filed paper exceeds the current size of the folder, the overlap is moved to provide additional capacity.

Abstract: A fastener comprises a filament having two opposing heads. The heads have two ends defining non-parallel planes, forming acute angles which share a common ray. The fastener is installed by being driven through two needles having slotted bores.

Abstract: A conveyor for conveying and grouping stringed tags. The conveyor carries stringed tags away from a production unit. A counter monitors the number of stringed tags delivered to the conveyor. After a predetermined number of strings have been delivered, the counter sends a signal to the conveyor drive assembly. The conveyor speed is briefly increased to separate the stringed tags into discrete groups. A second conveyor is provided moving in synchrony with the first conveyor for collecting the groups in containers.

Abstract: Variable pitch feed of fasteners by a unitary, single toothed feed member. Back-up of the fasteners from the feed position is prevented and the individual fasteners are securely positioned for ejection.

Abstract: A conveyor has a pivotable upper support which slideably houses two rake assemblies. Stringed tags are collected on the conveyor, then gathered into a bundle by the rake tines. The bundle is presented to a tying appratus, then dropped as the rakes part.

Abstract: A fastener formed by an elongated member with an apertured tip, such as a filamentary string, that is attached to a bi-directional locking head with longitudinally opposed openings. The elongated member is inserted into either of the opposed openings of the head, where it is engaged and locked in place by an internal, at least partially circumferential ring. Once the apertured tip is inserted into the locking head it remains in its locking position even if the filamentary string becomes separated from it as a result, for example, of pilferage.