Abstract: The folding knife has a handle provided with a blade support the intermediate part thereof being of less width than the first and second end. A lengthwise slot in the front edge extends through the first end to provide a fork and the bottom of the slot is so spaced from the back edge of the handle to provide a section having a chamber opening through the sides of the section when one of the side covers of the handle is removed. A passageway from the chamber opens through the second end of the blade support and is closed by a lens. A battery and a switch assembly fit in the chamber with the switch assembly provided with a tubular lamp socket which, when the battery and assembly are held by a grounding spring in an operative position extends through the socket. The assembly includes a two part circuit closing push button with one part extending through and held by the back edge of the handle and the other part incorporated in the assembly. The blade is pivotally connected to the fork.

Abstract: A through hull assembly to be incorporated in a marine drive has a housing secured to the hull. The housing consists of a rearward tubular section and a forward section. The tubular section is of a length to extend through the hull and is connected and sealed thereto in a manner preventing leakage through the passageway through which the tubular section extends. A shaft extends through both housing sections and is sealed to opposite ends thereof and is supported by bearings in each section with the ends of the shaft exposed. The bearings in the forward section are accommodative of forward and rearward thrusts. A lubricant reservoir maintains the housing full with the lubricant level in the reservoir giving information if there is any housing leakage.

Abstract: A carousel for installation in an under-the-counter cabinet has a post to be rotatably supported by the base of the cabinet and the undersurface of the counter rearwardly of a door. An assembly of radial arms is secured to the upper part of the post. Each two adjacent arms are for use in holding the upper end of an appropriately dimensioned open container against lateral movement with the bottoms of the containers seated on supporting structure. Covers for the containers are pivotally connected to the assembly and each is dimensioned and disposed to close the open end of a subjacent container. The bottom ends of the containers are held by the structure against movements other than tilting movements. When the upper end of one of them is tilted forwardly towards the doorway to the extent permitted by a releasable connection between the cover and the container. The cover and the container are then so separated that the container is now open to receive designated waste material.

Abstract: Valves and a common control therefor are disclosed in connection with an installation in a boat for use in hauling and servicing traps such as lobster traps. Such a boat has a line hauler and a davit provided with a snatch block and the davit is mounted to swing between positions in which the snatch block is located inboard above a washboard or with the snatch block outboard with the line to the trap trained over the snatch block and about the hauler. There are two valve controlled hydraulic circuits of which one controls the hauler and the other the davit. The control consists of a mount provided with a rotatable support which has a fixed fulcrum and slidably supports a shaft to which an operating handle is pivotally connected to the shaft so that by raising and lowering the handle the shaft is similarly moved and the shaft may be turned by swinging the handle relative to the support.

Abstract: Valves of the diverter and isolating types have their ports which are to be opened and closed surrounded by seats each of which is inclined inwardly towards the surrounded port. The hinged blades are surrounded by tips in support of seals of which there are two for each port to be closed. The seals are metallic and resiliently flexible and the seals of each pair are disposed to engage spaced apart, transverse zones of a seat when a blade is operatively positioned to close the surrounded port. As a diverter valve has two ports to be closed by opposite sides of its blade, there are two like but oppositely disposed pairs of seals, one pair for each port. With both types of valves, the seals of a blade are in substantially linear engagement with a seat when the blade is positioned to close the associated port and are in scraping engagement with the seat as the blade moves into and out of that position.

Abstract: A drop leg has a housing provided with top and bottom ends. The top end has an inlet and an outlet and the bottom end has a drain. An impingement plate supported within the housing is spaced from the top end to establish a separating chamber and to be directly contacted by the air stream through the inlet. The upper surface of the impingement plate is downwardly and inwardly inclined and has a central drain. The air stream striking the inclined surfaces rebounds towards the outlet. When vapors are also present, the drop leg is provided with a bulkhead which is sealed to the housing and establishes with the impingement plate an upper chamber and with the bottom end a settling chamber for contaminants separated from the air stream.

Abstract: A cutter head for a wood chipper has a circular disc and is mounted on a spindle by which the cutter head is rapidly rotated. The disc has at least one knife detachably connected thereto with its cutting edge exposed on the face of the disc engaged by the lengths of wood to be chipped. The connecting means comprise an actuating member releaseably seated against the rear face of the disc in a manner such that it may be moved parallel to the slot through which the knife extends. The knife is releaseably connected to the disc to enable its cutting edge to be advanced or retracted relative to the face of the disc engaged by lengths of wood and is also connected to the actuating member in a manner such that movements of the actuating member in either direction parallel to the knife receiving slot are attended by corresponding movements of the knife in directions normal to movements of the actuating member.

Abstract: An automatic stoker boiler has a heat transfer compartment above a combustion chamber which is divided by a horizontal partition inclined upwardly from the rear end of the boiler towards but terminating short of the front end thereof to provide a restricted port between the thus established upper and lower portions. An endless link belt establishes the lower portion of the combustion chamber and hot gas conduits extend from the upper portion through the heat transfer compartment to the exhaust and which is provided with a draft inducing fan and adjustable damper. Underfire air under the control of an adjustable damper is introduced into the lower portion of the combustion chamber upwardly through the belt and air jets are delivered into the combustion chamber through the front end both above and below the port. A standby fluid fuel burner is located in the rear end of the upper chamber portion.

Abstract: A heating unit preheats and stabilizes No. 2 fuel oil delivered through a conduit to the nozzle of an oil burner for optimizing efficiency of combustion. The heating unit is generally formed around a section of oil conduit or other elongate tubular metal core (18) at least equal to the inside diameter of the oil delivery conduit in which it is to be incorporated. At least one coat or layer (20) of heat conducting electrically insulating porcelain-like cement is formed on the core. A helical heating element or coil (21) of high temperature alloy wire surrounds the layer (20) and core (18). The outside of the coil is covered by an electrical and thermal insulating second layer (22) of refractory-type cement of lower thermal conductivity than the porcelain-like cement. The entire unit may be housed in an elongate box (16) packed with high temperature insulation (27) and with high temperature double insulated lead wires (24, 25, 26) extending into the box from the secondary of a 12-14 volt, 4-7 amp transformer.

Abstract: A light-projection device for digital instrumentation consists of a one-piece body including reflective and diffusive surfaces and a chamber to locate a plurality of sources of varicolored light. Light from the sources is diffused to fill an entire line segment of the seven in a typical digit, with varicolored sources of light affording the potential for polychromatic display, thus enhancing the data with color to signify danger, normality, negative values, et cetera.