Abstract: A combined timer, blow down warning device, chemical pump, and controller for boilers. The circuit comprises an electro-mechanical array of relays, flashing lights and alarms and an electronic tripper which operates from the rate of change in temperature in the blow down tailpipe, to turn off the lights and alarms only after a manual blow down operation has been performed.

Abstract: Dual wheels for campers, autos, and the like light vehicles to be used in place of a single standard wheel are provided. The arrangement includes an inner wheel which has a portion to be attached to the standard studs on the vehicle wheel hub, and another portion carrying a similar set of studs upon which a second wheel can be mounted outboard of the inner wheel.

Abstract: An inexpensive relatively theft-proof hub cap for the center of a vehicle wheel made up of inner and outer caps joined together by a screw thread connection and locking means. Each cup is plastic and molded in one piece. One of various locking arrangements integral with the two cups, with no additionally loose pieces, holds the structure securely on opposite sides of a wheel, while permitting the cups to be readily assembled or disassembled by hand without tools.

Abstract: A fluorescent gas analyzer to detect the concentration of a trace gas in another gas or a mixture of gases. The invention is particularly adapted to measure pollutant gases in the air, and still more particularly to measure SO.sub.2 in air, stack gases, and the like. The invention includes a removable and heated sample cell. The analytical determinations are made digitally by direct photon counting. The digital logic which handles the data produced by the cell includes means for continuous adjustment to accommodate changes in source energy and means to correct for dark current.

Abstract: An adaptor bolt to permit fitting wheels having a given bolt hole circle diameter to wheel studs having a different circle diameter. The kit is made up of a plurality of adaptor bolts each comprising an internally threaded bore located eccentrically in the bolt with respect to its external threads. The internal threads fit on the studs and cap nuts fit on the external threads to mount the wheel on the adaptor bolts. Friction increasing devices are provided on the internal threads to hold the adaptor bolts in various adjusted positions defining different diameter bolt circles.

Abstract: A new and improved wire line operated well tool apparatus and method utilizing a downhole transformer for sensing and testing conditions in a well, such as temperature, incline, and the like.

Abstract: An improved chuck key and spring pocket for holding the key. The key comprises a sliding cross bar having paddle ends, and the spring pocket cooperates with this cross bar. The pocket opening accepts the key in one orientation only, and then the paddles are used to cam the key tightly into the pocket.

Abstract: A new and improved wire line operated well tool for sensing metal in wells and the like, wherein a pair of coils spaced along the tool axis are moved through the well and respond unequally to ferrous material in the well. The coils are activated on alternate cycles of AC energy supplied from the surface, and the AC responses are transmitted back to the surface to indicate the location of the ferrous material. Means are provided to block any DC pulses, as could be caused by galvanic action, from disrupting the meaningful data.

Abstract: An improved automobile wheel with wire spokes and a novel method for making a spoked wheel. A metal spoked automotive wheel for tubeless tires having an outer circular rim with drop center adapted for receiving a tire is attached to a tubular hub assembly having means for receiving wire spokes. Wire spokes extend radially outward from the hub with terminal threads adapted for mounting a felly with threaded spoke nipples. The improved wheel center includes a narrow concentric inner felly of solid cross-section with holes for receiving the spoke nipples and peripheral portions for engaging the tire rim drop center. The felly has spaced-apart radial nipple-receiving holes and is integrally joined to the drop center of the rim at the flange.

Abstract: Apparatus and methods for making displays, printing plates, electrical circuit boards, and generally reproductions of originals in reduced, enlarged or full size comprising generating a collimated beam of interrogating light; optically deviating and raster scanning the beam and a recording beam; and receiving light from the object adjacent the scan line and transmitting said received light to a photodetector to generate an electrical signal representative of the light from the object using a fiber optic line to spot converter. Any photosensitive recording medium; a photocurable composition, a thin metal ablative film, silver halide film, an electrostatically charged photoconductor, thermoplastic deformation material or other physically or chemically alterable media, including ovonic, liquid crystal, photochromic or vesicular films, can be used.

Abstract: Securing means particularly for slide-in type battery pack to be used in cordless electric power tools. An L-shaped latch is pivoted on the tool, and its short leg cooperates with a release mechanism at the remote end of the battery pack. A release member, spring loaded on the battery pack, urges the latch away from the pack during disengagement. A thermostated subassembly of the cells within the battery pack is also disclosed.

Abstract: A new and improved wire line operated well tool apparatus and method for sensing and testing conditions in a well, such as stuck drill pipe, and for performing certain operations in the well, such as backing off, or loosening, the stuck pipe.

Abstract: Automobile wheel with wire spokes accessible through a recess in the outer spoke band adjacent the drop center of the rim, thus permitting use of tubeless tires.

Abstract: A polished steel wheel center with hub, outward-spreading spokes, and rim; the metal having substantially the same thickness throughout; the ratio of the center diameter to the hub height being substantially 5; the center having slots intermediate the outer areas of the spokes; the center having deeply recessed lug pockets intermediate the spokes; the terminus of the rim, the bottom of the lug recesses, and the bottom of the hub being in substantially the same plane; the slots being in a plane intermediate top and bottom of the hub.

Abstract: A front loading caulking gun comprising a tube which is open for 90.degree. of its periphery having a latch pivoted at its front end which swings completely out of the way to allow cartridge insertion and removal. It is latched into holes in the sides of the tube to hold the cartridge against the dispersing pressure. The wavy spring metal latch contacts several points around the metal bead at the front end of the cartridge to prevent cocking and to hold the cartridge snugly in the device until the latch is undone.

Abstract: A throw-out lever assembly for use in a clutch mechanism of a motor vehicle and including a support and a fulcrum assembly mounted on the support. A throw-out lever is operably connected to the fulcrum assembly being adapted at one end for engagement with a clutch actuator and at its opposite end for engagement with a throw-out bearing of the clutch assembly. The fulcrum assembly includes a fulcrum member for pivotally engaging the throw-out lever between its ends. The fulcrum member is adjustably mounted on the support for selectively positioning the throw-out lever in a selected angular orientation with respect to the throw-out bearing for applying an optimum force on the throw-out bearing to disengage the clutch mechanism upon actuation of the clutch actuator.

Abstract: Cordless electric tools or the like comprising a power handle and a plurality of diverse tool heads detachably securable thereto. The power handle includes battery means therein and operator controlled switch means, whereas each of the diverse tool heads may include an electric motor and an output means. The tool heads and power handle include interengageable means constructed for quick mechanical and electrical interconnection therebetween facilitating quick connection and disconnection of the power handle from the various tool heads without requiring any special tools or implements. Electrical interconnection is made automatically upon mechanical interconnection. In addition, a battery charger for the battery means may include similar mechanical and electrical connection means operatively engageable with the power handle to afford ready and easy charging of the battery means between uses of the power handle.

Abstract: The invention relates to a process for making a nickel/chromium plated automobile wheel comprising plated rim and plated center, including special electroplating procedures and apparatus; and the resulting wheel.