Abstract: A sealed bimetal snap disc thermostat is disclosed which is suitable for use in environmental locations in which severe thermocycling occurs. The thermostat provides a disc cup having an imperforate end wall which is the only portion of the thermostat per se which is exposed. A non-metallic enclosure cup is formed with an aperture closely encircling the disc cup and which defines a cavity surrounding the remaining portions of the thermostat. A sealing compound, such as epoxy, fills such cavity. The disc cup is crimped onto the thermostat body and provides an extended portion which is spaced from the thermostat body so that the sealing adhesive provides an interface of substantial area with the metal disc cup to assure a continuing seal. Because the sealant and enclosure cup surround the entire thermostat except for the disc cup, the thermostat is thermally insulated from its environment except for the disc cup end face.

Abstract: In dressing a grinding wheel having a non-cylindrical contour, the wheel is moved in a path corresponding substantially to the desired wheel contour by first and second CNC controlled slides while a single point diamond or diamond roll dresser is rotated by a CNC controlled rotary mechanism through selected angles during traversal of the wheel therepast to maintain a vertical reference plane containing the centerline or mid-plane of the diamond dresser point or radius substantially orthogonal to a vertical reference plane containing a tangent to the wheel contour path. Maintenance of the orthogonal relationship between the single point diamond dresser point or radius and wheel contour path during traversal results in the desired wheel contour being accurately dressed.

Abstract: A folding insert for forming a jacket to be used for a device to form a envelope-shape jacket for a magnetic cartridge. The folding insert is provided with protrusions and grooves along both side edges thereof, whereby flaps of the jacket material can be bent more than 180.degree. by a folding bar along the protrusions of the folding insert.

Abstract: A breathing valve having a valve chamber connectable to a gas supply and to a breathing device, a gas flow opening for exit of exhaled gases through which atmospheric air may be inducted into the chamber, a valve member in the chamber, a one-way flow opening in the valve member through which gas may flow from the chamber for breathing, and preventing return flow in the opposite direction, a movable valve closure forming part of the valve member movable into and out of sealing engagement with the exit gas flow opening, and a pressure responsive device in the valve member responsive to obstruction of gas flow into the chamber and further responsive to inspiratory effort by a patient to cause the valve member to move away from the exit gas flow opening for permitting air flow through the exit gas flow opening into the chamber for inhalation.

Abstract: A multiple speed motor includes first and second speed windings connected to first and second power terminals and a start winding connected to a common power terminal. A Triac connects one speed winding to power and has a gate. Either the first or second power terminal is connected to one side of a power supply and the third or common terminal is connected to the second side of the power supply. The gate is connected to the start winding. A speed responsive switch has first and second contacts connected to first and second power terminals and third connected to a common node the connection between the start winding and the gate.

Abstract: A method wherein an article is molded of a heat-fusing material or plastisol, either liquid or dry, in a mold having an array of gas impingement jets disposed adjacent the backside of a mold surface for controlling the temperature over respective first and second areas of the mold surface. There is included first and second gas heating and cooling circuits each including a blower and dampers for supplying gas at the gas impingement jets associated with the mold. All of the gas impingement jets are supplied with heated gas to preheat the mold surface to a non-gelling temperature and a liquid plastisol coating is applied to the mold surface. To obtain the coating, the mold is filled and the excess plastisol is removed from the mold by dumping the plastisol from the mold into a dump tank.

Abstract: A molding machine has a valve assembly that includes means for selectively heating or cooling a mold by controlling flow of gas through an array of gas impingement jets disposed adjacent the backside of a mold surface to regulate the temperature over respective first and second areas of the mold surface. Gas heating and cooling circuits include two drive cylinder regulated plate valves for supplying gas at the gas impingement jet nozzles associated with the mold.

Abstract: An improved serving tray according to the teachings of the present invention is disclosed as including a window abutting element which is laterally positionable allowing a window abutting edge to abut with and fulcrum on the outside surface of the window to compensate for variations of the angle of the window to allow the serving platform of the serving tray to be horizontal. The window abutting element is laterally positionable by slideably mounting it to the bottom surface of the serving platform. In its most preferred form, the window abutting element is slideably mounted by arms extending generally parallel to and spaced from the rear legs of the serving tray. The window abutting element is held in one of multiple positions by teeth formed on the bottom surface of the serving platform and formed on the window abutting element.

Abstract: A pressure-responsive valve exhibiting unusual restoring force includes an elastically deformable diaphragm having a plurality of non-intersecting, non-meeting, separate arcuate slits, each slit having a base which is intersected by at least one other slit, and each slit being out of intersecting relation with its own base.

Abstract: A vacuum extractor for use in childbirth has an evacuable suction cup for engaging the child's scalp, the cup being connected to a source of a pulling force in a manner which ensures that the line of the force passes substantially through the center of the cup's lip, thereby minimizing the production of tilting moments on the cup on application of an oblique pulling force.

Abstract: A magnetically driven and latched actuator includes an armature, at least a part of which is of a ferromagnetic material, mounted for reciprocating travel between two spaced apart limit positions. An electrical coil is operative upon the ferromagnetic material to drive the armature alternately back and forth between the limit positions, and a pair of auxiliary ferromagnetic bodies are fixed, each adjacent to a respective one of the limit positions. The auxiliary bodies and the ferromagnetic portion of the armature are mutually magnetically attracted to each other so that the armature becomes magnetically latched at the limit position to which it is last driven by the coil.

Abstract: A method for the distribution of sheets, especially glued together sheets of paper, cardboard, corrugated cardboard and the like, from individual small sheet stacks. The method provides for alternating ones of small sheet stacks proceeding from a machine to be turned over one hundred and eighty degrees and returned to a conveyor belt. Thereafter, individual sheets of sequentially arriving small sheet stacks are delivered to a final loading station. The installation for performing the method comprises an endless conveyor belt having an endless loop formed in its top portion by three deflection rollers disposed between the front and rear guide rollers of the conveyor belt, one of the deflection rollers protruding upwardly through the feed plane of the conveyor belt. At the end of the conveyor belt a back-up rail is disposed thereabove to form an outlet slot therebetween, the width of which slot is controllable to provide stacking of individual sheets at the final station.

Abstract: An edger for manually refurbishing elastomeric wiper blades has a housing to be grasped by a user, the housing having a groove with rigid, non-abrasive sidewalls spaced substantially the same as the width of the working edge of the blade, and an abrasive member disposed in the housing at the bottom of the groove, the abrasive member aligned transverse to the groove to remove material from the blade transverse and perpendicular to the blade, effectively smoothing the blade as the edger is passed along its edge. The abrasive member may be mounted in the bottom of an inverted T-shaped slot, or the housing may include a slotted external member and an internal member defining a flat surface for supporting the abrasive member behind the slot.

Abstract: The present invention relates to a method of driving a glass tempering system and to a glass tempering system for carrying out the method. The main components of the system are a loading section, a heating furnace, a quench and cooling section and an unloading section. The sections are provided with conveyors, which are made of horizontal rollers and can be driven in unison or separately. The furnace and quench and cooling section conveyors are provided with a common drive mechanism for driving the conveyors either at the same rate of speed or for permitting stoppage of the quench and cooling section conveyor. Instead of stopping the quench and cooling section conveyor, it can be coupled to the common drive mechanism through a reduction gear to effect a very slow movement after the quenching is finished and a glass sheet load is being cooled to a handling temperature.

Abstract: A bearing assembly having bearing surfaces pre-loaded towards each other, the bearing surfaces being originally made in slightly non-conforming geometry and dimensions over the majority of their surface areas in sliding engagement, the areas of the bearing surfaces in engagement being thus less than the total available areas. During use, and through progressive wear-in of the bearing surfaces in engagement, the bearing surface areas in engagement are progressively enlarged with progressive conformity in geometry and dimension, the conforming surface areas being constantly kept in engagement by the elements in the assembly adapted to provide bearing pre-load.

Abstract: In a display sign including a plurality of rotatable display elements to be flipped between opposite extreme display positions, a bidirectional limit stop for stopping the motion of said display elements at said extreme positions is configured in the form of a bidirectional pendulum. The limit stop is preferably formed by an oversize sleeve coaxially disposed with respect to and depending from a smooth-surface horizontally disposed support member. The rotatable display element is preferably generally planar and configured to strike the opposite sides of the outer surface of the pendulum-forming sleeve along a line passing below the point of support thereof. The resulting pivoting and rotating movement of the pendulum serves to absorb a substantial portion of the angular kinetic energy of the rotating display element, thereby suppressing rebound.

Abstract: A fuel flow distribution valve includes a valve body having a bore with a spring biased pressure responsive valve therein. The valve and an associated valve bore wall include first and second sets of slots or holes therein formed simultaneously when the valve is in a fixed position within the bore wall to cause each of said flow metering slots or holes to be located in direct communication with discharge ports thereby to minimize and simplify internal manifolding and passages within said valve body.

Abstract: A workpart fixture for an unbalanced drill bit lug includes a support having a vee-shaped recess with an included angle substantially the same as vee-shaped intersecting surfaces on the drill bit lug to receive same and a fluid actuated clamp assembly carried on an arcuate slide which is movable in a circular arc path laterally relative to the drill bit lug generally about a centerline through the drill bit lug body to accommodate right or left linear or angular offset of the line of intersection of the vee-shaped lug surfaces and to optimize clamping force on the lug in the fixture. The clamp assembly includes a clamp lever which is pivotal toward and away from the drill bit lug by a fluid actuator and which carries swiveling clamp pads that seat against the drill bit lug when the clamp lever is actuated by the cylinder.

Abstract: A reinforcing structure for precast concrete is provided. The reinforcing structure includes a horizontally disposed bearing plate, and a vertically oriented planar reinforcing mesh extending above, below and inboard of the bearing plate. A vertical reaction bar is connected to the vertically oriented reinforcing mesh at a horizontal position inboard of the bearing plate. A horizontal reinforcing bar is oriented parallel to the vertically oriented planar reinforcing mesh.