Abstract: A plane for use with disposable blades (whose longest dimension is parallel to the cutting edge) has a blade-holding part in which the blade can be released by a quick-release lever from being clamped between a rigid member and a spring-biased sheet metal member, the quick-release lever releasably supporting a bar member which engages a clamping bolt. Depth of cut is controlled by a rotary knob engaging an element intermediate the knob and the blade-holding part to move both the intermediate element and the blade-holding part up and down. Slewing of the lever is achieved by a lever which slides the blade-holding part sideways in its rib-and-groove engagement with the intermediate element.

Abstract: A highly ductile cobalt-chromium-nickel dental alloy suited for crown and bridge applications which require deformation by hand burnishing in the mouth of a patient, has a controlled high stacking fault energy and a ductility of about 20 percent elongation or more, a yield strength of about 35,000 psi or less and low work hardening characteristics and is free of hardening precipitates resulting from the inclusion of significant amounts of carbon, boron, molybdenum, titanium, aluminum, and tungsten in the alloy. Preferably, the nickel-cobalt ratio in the alloy base ranges from a low of about 1:3, by weight, to prevent the normal transformation of cobalt from a ductile face centered cubic lattice to a hexagonal close pack structure upon cooling to room temperature to a high of 2:1 since higher concentrations of nickel produce CoNi.sub.3.

Abstract: A motor vehicle passenger safety belt with a pelvic belt with two end parts onnected to the motor vehicle for extension from opposite sides of a passenger, a shoulder belt connected to the motor vehicle and to the pelvic belt and so as to cross in front of the passenger downwardly over one shoulder toward the other side of the passenger, and a back belt connected between the shoulder belt in front of the passenger and to the end part of the pelvic belt extending from said other side of the passenger.

Abstract: A fuel delivery pump having a resettable register for registering the volume and cost amounts of each fuel delivery and employing conventional resettable volume counters and new electromagnetic cost counters composed of banks of decade modules, each having an electromagnetically positioned wheel and an electronic drive circuit for indexing the wheel in stepwise fashion by electromagnetically accelerating and then decelerating the wheel.

Abstract: An electronic multiple level predetermining system having a single level predeterminer adapted to be indexed for accumulating a primary count and for generating a primary predetermining signal when the accumulated count reaches a primary predetermining level and a control system operable by an input pulse to index the predeterminer one count in one direction for accumulating a primary count of the input pulses and through an additional bidirectional counting cycle for generating a secondary predetermined signal at a secondary predetermining level.

Abstract: A clamp assembly for flexible duct of a type having a helically wound strip and a form-sustaining helically wound reinforcing member secured between lapping adjacent wraps of the strip. For reducing an end convolution of the duct, a one-piece spring wire clamp is provided having an operating arm and a lever arm connected in offset angular relation, opposite ends of the operating arm being mounted at opposite ends of an end convolution of the reinforcing member of the duct. The lever arm is movable into a closed clamped position engaging the end of the duct for effecting movement of the operating arm to contract the end convolution of the duct.

Abstract: A sewing machine installation for sewing shirt front box hems and having a first underlying belt conveyor for individually conveying shirt front material blanks longitudinally forwardly along a lower main support table through a shirt front edge folder and a second overlying belt conveyor for individually conveying separate box hem material blanks with a liner tape longitudinally forwardly along an upper auxiliary table section through a box hem edge folder and into superimposed preassembled association with the prefolded shirt front blanks; the overlying and underlying conveyors thereafter cooperating for conveying the preassembled shirt front box hems longitudinally forwardly along the main support table through sewing and shearing stations for sewing the preassembled shirt front box hems and shearing excess material from the leading and trailing edges thereof.

Abstract: An inertia insensitive disconnectable drive linkage connects a power operator to a swinging door and comprises a door bracket fixed to the door and an arm operator pivoted thereto. A latch positively locks the operator arm to the bracket during normal powered swing of the door. A cam on the door frame releases the latch when the door is swung beyond the door closed position in the opposite direction of opening during emergency operation.

Abstract: A hair roller which has a pronged retention member mounted at at least on one end. The retention member is movable axially between one position at which hair can be wound around or unwound from the roller and a further position at which the prongs engage hair wound around the roller to hold same in place. In the latter position the prongs are inclined outwardly away from the roller axis so that they can be pushed through and over the hair on the roller and can penetrate in towards the users scalp.

Abstract: A surface-to-surface missile fire control system employing a pilot projectile fired into a predetermined indirect ballistic trajectory monitored by a fire-control station to determine its actual trajectory and actual coordinates of impact and wherein the pilot projectile has a camera for transmitting a target area picture to the fire-control station during its relatively steep descent.

Abstract: A rotary electromagnetic indicator having a stator with an annular arrangement of five equiangularly spaced radially inwardly extending salient poles, a winding on each stator pole and an indicating rotor having a permanent magnet with diametrically opposed north and south salient poles, each having an angular width equal to the included angle of a pair of adjacent salient poles of the stator.

Abstract: An electronic antenna adapted for concealment in an automobile or similar vehicle is tuned by the RF tuning circuits of a conventional radio receiver. In the preferred embodiment, the antenna is designed for the AM and FM broadcast bands and includes a concealed metal plate which may be suitably mounted at a convenient location on the vehicle such as being embedded in the crash panel. RF signals are received by the metal plate pick-up which is connected to both low frequency and high frequency RF amplifiers which amplify them and, after suitable filtering, provide a highly selective output to the conventional radio receiver. This is due to the fact that when the conventional radio receiver is tuned to a station, it presents a very high impedance load at that frequency thereby causing the low frequency or high frequency RF amplifier of the electronic antenna to amplify that frequency in preference to all others.

Abstract: The discharge device of this invention serves to receive axially compressed radially self-sustaining tubular duct in a cartridge form substantially shorter than the fully extended length of the duct and has a restraining collar on an exit end of the discharge device which effects a hoop tension on the compressed core during its passage from the exit end of the device to apply a controlled frictional drag ensuring that the core upon discharge is in a fully extended condition.

Abstract: A multiple plunger fuel injection pump includes a pair of axially positionable interconnected control sleeves encircling each plunger for controlling the quantity and timing of fuel delivered by the plunger. Speed and load response actuators are operative to control the axial positioning of each sleeve of each pair of control sleeves. Adjustment means are provided for separately adjusting, during operation of the injection pump, the axial positioning of each sleeve to balance the timing and quantity of fuel delivered by each plunger with respect to the other plungers.

Abstract: A fuel delivery pump with resettable volume and cost counters having counter resetting means with a zero detent mechanism for accurately positioning the lowest order number wheels of the counters at zero.

Abstract: An arbor is provided for use with different size power tool chuck jaws and has a main body section of enlarged cross section relative to a shank of the arbor. The shank and main body section have a plurality of grooves therein with each groove longitudinally extending the length of the shank and into the adjoining main body section to define a continuous chuck jaw engaging surface which in the main body section of the arbor is of enlarged circumferential dimension relative to that of the shank drive surface for engaging different size chuck jaws in non-slipping positive driving relation.

Abstract: Several embodiments of a rotary indexing mechanism having either an angularly reciprocable or rectilinearly reciprocable input, an output rotary friction drum and a one-way drive interconnect system between the input and friction drum comprising a drive line wrapped about the friction drum having one end connected to the reciprocable input and a line tensioning spring connected between the other end of the drive line and the reciprocable input and whereby the input is adapted to be actuated in one direction to draw the drive line from the friction drum and rotate the friction drum in one angular direction and to be actuated in the reverse direction by the tension spring to pay out the drive line to the friction drum and thereby uncouple the drive line from rotating the friction drum in the reverse angular direction.

Abstract: The invention relates to an apparatus for agglomerating and precipitating suspended matter out of a gas using centrifugal acceleration within a treatment chamber distinguished by an inner cylindrical inlet tube through which the contaminated gas is led in a downward path and an outer circumscribing barrel through which the cleansed gas is led in a spiralling upward path. The inlet tube and barrel are mounted over and relative to a lower water filled reservoir or contaminant collection chamber. The gas exits from the inlet tube through an accelerator in the form of an adjustable venturi throat defined by a shroud arrangement vertically aligned with and spaced from the inlet tube and by which the downward flow direction of the gas is reversed as the gas aspirates water and passes upwardly through and out of the venturi throat and into the passageway defined by the inner inlet tube and the outer barrel.

Abstract: This invention relates to sheet metal files of the type having a large number of discrete cutting edges projecting from the surface of an elongated strip of thin sheet metal forming the base of the file. In such a file, the depth of the cut by each individual cutting edge is very small and accordingly, the pressure on each cutting edge is small and the base of the file need only have sufficient strength and rigidity to support the edge and apply the necessary small cutting pressure. The cutting edges are formed by partially shearing tabs or teeth from the solid strip forming the base and bending them out of the plane of the base at an acute angle. The ends of the teeth are sharpened and hardened to form the discrete cutting edges having the desired rake and clearance angle.

Abstract: A millisecond delay surface connector suited for explosive blasting operations is provided in the form of a flexible detonation transmitter tube having a length of about one half foot and more with a delay cap connected to each end of the tube. The tube provides a hollow elongated gas channel having the inside periphery of said tube coated with a layer of explosive for sustaining a percussion wave at high velocity along the length of the tube. Each cap includes an elongated tubular shell of rigid material having a closed terminal end portion, a layer of explosively inert material within the shell at the terminal end portion, a delay element within the shell and a detonating charge intermediate to said delay element and said explosively inert layer. The delay element is in propagative relationship with the tube and the detonating charge.