Abstract: A trigger for a dual element time delay fuse includes a paper cap and a heater strip having locating ears thereon.

Abstract: A road surface conditioning machine having an adjustable height shearing blade, side delivery blades, and an adjustable height striker blade to spread the material cut by the shearing blade and side delivery blades, the leading end of the shearing blade being adjustable in height with respect to the trailing end.

Abstract: A split pulley made of a resilient material which is held together by a circumferentially extending strap carried wholly within the body of the pulley.

Abstract: The blown fuse indicator is mounted to one of the opposed ferrules of a fuse and ejects a streamer therefrom in response to a blown or open fuse condition. The streamer is a strip of vinyl which is secured at one end to a plunger held within a housing mounted on one of the ferrules, and at its other end to a container which is ejected from the housing by the plunger in response to a fuse opening whereby the streamer unfurls to indicate the fuse is blown and open.

Abstract: A reciprocating pump valve and seat having mating frustoconical seating surfaces in which a resilient sealing insert on the valve is below a rigid disc portion of the valve, with a sealing surface on the insert engageable with the seating surface of the seat radially outwardly from the portion of the seating surface of the seat engageable by the rigid disc portion of the valve.

Abstract: An enclosed protective chamber for a subsea wellhead assembly includes a main body installed on the sea floor. Subsea wellhead apparatus is mounted in the chamber on top of a well. A pressure-containing lid is mounted on and sealed with respect to the main body such that chamber pressure is isolated from the subsea hydrostatic head. An inflatable, elongated, flexible storage tank or dracon is attached to the chamber through a conduit having a pressure-balanced relief valve therewithin. The dracon is attached to the conduit through a quick disconnect coupling and closure valve which permit ready attachment, removal, or replacement of the dracon. Under normal operating conditions the dracon is deflated. The dracon is preferably anchored to the sea floor. When a leak in the subsea wellhead assembly occurs, excess chamber pressure permits surplus fluid to enter and fill the dracon.

Abstract: A portable cook stove and stand includes a ring supported by three legs with braces and struts extending between the legs. A burner plate is supported by bi-level brackets attached to the legs adjacent the ring. The burner plate includes a deflector pan in which is mounted a fuel jet in communication with a fuel tank. The burner plate is supported by the brackets at a predetermined distance below the ring such that the ring acts as a wind break for the flame.

Abstract: The adjustable tape measure clip includes a strip of spring steel folded over to form a primary spring with opposing leaves, the inner leaf being adapted for attachment to the case of the tape measure. The inner leaf includes a secondary spring for adjusting the spring force of the primary spring on the leaves of the clip. A mounting screw, which mounts the spring clip onto the case of the tape measure, also engages the secondary spring on the inner leaf to adjust the secondary spring force on the primary spring. As the screw is rotated, the secondary spring varies the primary spring force and thus adjusts the free clip width between the leaves to either increase or decrease the gripping pressure of the clip on the user's apparel.

Abstract: An improved casing hanger and seal assembly includes a split seal ring disposed between annular plates on a support shoulder in a wellhead. A plurality of floating pedestals are received within the seal ring. A slip and bowl assembly is mounted over the seal ring in the head, and when loaded by the casing weight provides the force to energize the seal ring to seal the casing and head. The floating pedestals provide stops to limit seal energization to a predetermined amount, and are movable with the seal ring to assist in distributing stress equally across the cross-section of the seal ring.

Abstract: An electric arc furnace includes a crucible having a metal shell for recovering precious metals from spent material. The shell includes a metal tap hole and a slag door positioned above and opposite the metal tap hole. A removable swinging roof is provided above the crucible together with a plurality of electodes for heating the spent material. Also, a cooling band circumscribes the crucible for cooling the metal shell. Conveyors are provided for distributing the spent material at a plurality of points located between the electrodes and the wall of the crucible. The crucible is tilted to allow the removal of the slag and metal.

Abstract: A ceramic coating for a subminiature fuse includes sodium silicate and silicon dioxide applied over a subminiature fuse wire in slurry form. The coating gives the fuse arc quenching properties.

Abstract: The invention relates to a method and apparatus suitable for example in enabling the installation of a casing hanger within a bore in an oil-drilling wellhead in a manner so that the installation and the sealing-in of the casing hanger is accomplished in a single operation. The invention thus comprises installing a component (2) within a bore (4) so as to be received therewithin in a fluid-type manner utilizing expandible seals (8) and a shoulder (36) within the bore (4) adapted to be contacted by a leading edge (32) of one of two concentrically arranged sleeve members (12, 14) which are driven downwardly within the bore towards the shoulder, the two sleeve members which encircle the component (2) being secured together by shearable links (25).

Abstract: A permeable breakwater for submerged offshore or seawall retentive installation includes a base and permeable opposed sides terminating at an upwardly projecting permeable wave wall. The breakwater is located offshore to cause moderate to heavy waves to break further offshore thereby dissipating their energy before reaching the beach.

Abstract: A pair of cutting snips includes a pair of handles which are mounted to a pair of blades. Located on one of the blades is a pivotably mounted self-aligning anvil. When the handles are squeezed, the blades come together in such a manner that the workpiece is caught between a blade and the anvil such that the workpiece is cut in a linear fashion.

Abstract: A nose piece for use with an airfeed drill includes a cylindrical portion which has on one end a truncated cone for mounting a drill support bearing and on the other end a flange. Formed within the flange are a plurality of slots. These slots correspond to an array of rotatable fasteners and locking pieces mounted on the front of the housing. Attachment of the nose piece to the housing is accomplished by placing the slots over the fasteners and locking pieces and tightening the fasteners.

Abstract: A method for producing a metallic interface suitable for overlaying consists of exposing the area of an alloy combination to be overlayed to a temperature above its lower critical until an element reduced zone arises. This element reduced zone more easily accepts element diffusion that takes place during overlaying. Accordingly, an improved interface, one that is more ductile and less prone to cracking, is produced.