Abstract: A chromatographic column is terminated with a fitting for connecting the column to an end flow tube. The fitting is provided with a column terminator element comprising a solid rim-like housing having a central aperture therein and a duplex porous disc positioned within the aperture and secured to the housing. The porous disc comprises a main body portion providing pores having a first relatively higher micron rating and a thin layer on one surface providing pores having a relatively lower micron rating and a higher pressure drop thereacross. The thin layer is adapted to face toward the chromatographic column and the main body portion has a coarse pimpled surface opposite the planar surface to facilitate lateral fluid flow relative to the main body portion.

Abstract: A ratchet handle for a hand tool employs pairs of opposing pawls which are biased by a spring and selectively engage teeth at the interior of a cylindrical structure to provide for a three direction mode ratchet drive. A shifter engageable at one of three positions has ears which selectively interact with the pawls. In one embodiment three pairs of opposing pawls are biased by a garter spring. Another embodiment employs an integral serpentine spring/pawl assembly.

Abstract: A method and wire drawing apparatus are disclosed in which rapid cooling of the wire is effected by directly contacting the wire with liquid as it leaves the die and ensuring the wire passes through a bath of coolant while on the block. The bath can be formed against the wire-engaging surface of the block by a cowl.

Abstract: A wallcover backing for strippable vinyl wallcovering comprises a dimensionally stable unitary multistratum nonwoven fibrous web material that can be coated with or laminated to a vinyl layer. The backing material has a fibrous top phase adapted for secure nondelaminating engagement with the vinyl layer superimposed thereon and a fibrous base stratum integrated with the top phase and adapted for strippable adhering engagement with a wall or the like. The top phase constitutes at least 5 percent by weight of the web and has a smooth exposed surface for direct adhesion to the vinyl layer. The web includes about 15 to 45 percent by weight of a hydrophobic latex binder and contains an adhesive penetration inhibitor adapted to inhibit the migration of a wallcover adhesive into the fibrous web material and to promote uniform and full strippability of the web from the wall to which it is adhered.

Abstract: A fuel injection pump having a mechanically adjustable servo valve for controlling the timing of the pumping event is disclosed. A pivoted lever has one end which engages the spring seat of a timing control plunger servo valve which is also subjected to a speed related hydraulic signal and another end in the form of a bimetal strip which engages a cam clamped on the throttle shaft to pivot the lever according to the rotational position of the shaft. The profile of the cam is such as to retard the timing of the pumping stroke when the charge delivered by the pump is increased to delay pressure built up in the pump so that injection pressure in the associated nozzle is reached at a scheduled crankshaft angle regardless of variations in speed and load on the engine. A heater for the bimetal strip is provided to shift the servo spring seat to change the timing of injection upon demand or automatically under a prescribed engine operation condition. In one embodiment, the bimetal provides 3.degree.-4.degree.

Abstract: Apparatus is provided for temporarily advancing the timing of a fuel injection pump of the type having timing means responsive to a source of fuel under pressure correlated with the speed of an associated engine and also to the pressure of fuel in the pump housing. Valve means is provided for venting the pump housing which means may be manually or automatically actuated such as by use of a solenoid.

Abstract: A portable lathe for machining the end of a pipe workpiece for butt welding, having a cylindrical shroud with a collar for receiving the workpiece and three equiangularly spaced, hydraulic clamps mounted on the collar for clamping the pipe workpiece therein coaxial with a rotary cutting tool support of the lathe. Three equiangularly spaced, hydraulic actuators provide for axially feeding the tool support during machining and are hydraulically interconnected for damping an unbalanced machining reaction force on the cutting tool support.

Abstract: A luminaire adapted to be mounted at the top of a post and to direct light below a horizontal plane is disclosed. A housing element preferably of a polycarbonate material comprises a housing for an electrical system and a refractor means having an interior and exterior prismatic structure.

Abstract: A convertible camera-supporting belt is disclosed for carrying a camera in either a "belt" mode, a "neck sling" mode, a "shoulder strap" mode, or a "hand-holdable" mode. The belt includes a belt strap having a first set of ends connectable by an adjustable buckle to form a belt to be worn about the waist. The belt also includes a second set of ends remote from the first set which are disconnectable to form a shoulder strap or a neck sling. Support elements for hanging a camera are mounted adjacent the second set of ends and are detachably connected to the camera by releasable straps.

Abstract: A detachable fuel feeder device for use with wood stoves is disclosed comprising an inclined fuel storage chamber adapted for alignment with the door opening of the wood stove, a dog clamp for detachably mounting the chamber to the wood stove, a door pivotally mounted to the storage chamber, a releasable catch selectively holding the door to close off the storage chamber, and a sensor to sense the amount of combusting wood fuel in the combustion chamber of the wood stove and being operationally connected to the catch to actuate the catch upon sensing a predetermined amount of combusting wood fuel. Alternative sensors are disclosed for sensing the height of combusting fuel, the weight of combusting fuel and a predetermined amount of heat.An alternate embodiment discloses a generally horizontal fuel storage chamber having a spring-loaded pusher element for injecting wood fuel into the combustion chamber.

Abstract: A fuel injection pump having a timing piston shiftable for establishing the fuel injection timing, a servo valve piston for hydraulically positioning the timing piston, biased in the advance direction by a speed correlated fluid pressure, engine load responsive means acting through a compression spring to bias the servo valve piston in the retard direction, a bleed valve for establishing a regulated fuel pressure biasing the servo piston in the retard direction, the bleed valve being biased in its opening direction by the regulated pressure, and bleed valve control means responsive to continuous measurements of one or more operating parameters of an associated engine and acting through a compression spring to variably bias the bleed valve in its closing direction.

Abstract: A roof vent for flat built-up roofs, having a truncated pyramid-shaped air stack with a protective cap and an internal fan for inducing upward air flow through a check valve at the upper end of the stack. A solar panel provides power for operating the fan, a thermal switch is employed for enabling the fan above an ambient temperature of 50.degree. F. (10.degree. C.) and a humidistat may be employed for disabling the fan below 50% relative humidity.

Abstract: An improved counter assembly comprises an electrically operable counter module insert, a transparent viewing crystal, and an outer box-like case which are held together by an improved mechanical arrangement. The outer case is provided with inwardly projecting abutments engageable by the counter module insert for aligning the insert within the case. The counter module insert includes a pair of laterally spaced rearwardly facing shoulders at its front end, and the crystal includes a pair of laterally spaced rearwardly projecting retention fingers engageable with the shoulders of the module insert for retaining the case, crystal and module insert in an assembled relationship. The improved construction provides increased resistance to tampering.

Abstract: A hand tool for applying telephone plugs to a telephone line and having a pair of pivotal handle members and a replaceably jaw module mounted between the handle members with a lower telephone plug support jaw thereof fixed within a transverse slot in the lower handle member and an upper telephone plug setting jaw thereof mounted for linear movement on the lower jaw and to be closed by cam actuation thereof by the upper handle member when the handle members are squeezed.

Abstract: The present invention relates to coilable extensible rules or the like. More specifically, the present invention is concerned with a new and improved optical sensing system for extensible tape rules of the type that provide a visual display of the measurment readings, such as the digital tape rule described in the Hildebrandt et al U.S. Pat. No. 4,161,781, the disclosure of which is incorporated herein by reference.

Abstract: A fuel dispenser cost counter having a plurality of coaxial cost counter wheels with a 100 count first order counter wheel with ten, 36.degree. spaced, two-place identifying numerals of 00, 10, 20 . . . 90 having an angular height of 30.degree., ten-count graduations centered on the identifying numerals and intermediate five-count graduations between the identifying numerals and with both the ten-count and five-count graduations extending at least substantially the full width of the identifying numerals and such that the counter can be read without substantial readout ambiguity during a count transfer from the first order counter wheel to the next higher order counter wheel.

Abstract: An expanded readout system and a method for expanding the readout of a resettable fuel pump register employs a shutter pinion, a shutter having a pawl assembly, and a stop means for each of the counters to be expanded. The pawl assembly may comprise one of two pawl structures depending on the counter. The expanded readout operates in conjunction with the mechanical system of the register to record the expanded readout and to reset the readout by rotation of the shutter.

Abstract: A saw chain sharpening fixture is disclosed featuring an inverted U-shaped frame adapted to be installed on a cutter bar of a chain saw and having a sharpening opening in a frame. A pair of sharpening tool adaptor guides are mounted on sidewalls of the frame and diverge outwardly from the sharpening opening, the adaptor guides each having an elongated bearing surface the lowermost portion of which is adapted to be disposed below the top of the cutter bar for supporting a sharpening tool adaptor on a selected one of the guides.