Abstract: A winding arrangement for a rotor pole in a synchronous machine having edgewise wound conductors forming a coil for the pole, the pole having at each end an end plate to provide curved corner portions for the winding. The conductor has a slot extending through it with the walls of the slot parallel to the edges of the conductor. The slot is provided in the conductor at the corner region where the edgewise wound conductor is to bend around the corner. The slot reduces the upset which occurs at the inner edge of the conductor where it bends, and it also permits the conductor to follow the curved corner portion more closely.

Abstract: A reel bar loading device is provided having sloping storage rails located above the driving roll. The storage rails are pivotally connected at their lower ends to second rails. The second rails have upper end portions, downwardly sloping portions and lower end portions. The second rails in a first position are in alignment with the first rails and provide a continuum of the track permitting the reel to descend the second rails into an awaiting transfer arm mechanism. The second rails are pivotal outwardly precluding movement of a reel from the first rails and allowing the transfer arm mechanism to move into a winding position. A pair of lowering arms engage the reel at the opposite ends of the reels adjacent to and inside of the second rails to control the descent of the reel over the second rails when the second rails are in their first position.

Abstract: A paper slitter machine having a plurality of slitter heads in mutually spaced apart relation located across the width of the machine, each slitter head having a slitter disc operable in cooperating relation with a respective annular disc or slitter band mounted for rotation on a shaft, for the slitting of a paper web into discrete width portions on passage of the web past the slitter heads, is provided with a plurality of slitter indexing means mounted on traverse means for retraction to a position clear of the machine, the slitter indexing means having a slitter stop for each slitter head, the stops being adjustable upon the traverse means to permit pre-indexing of each of the stops to a desired predetermined position along the length of the traverse means such that, with the traverse means repositioned within the slitter machine and having the stops positioned in an operative position, each of the slitter heads may then be brought rapidly into indexed relation with the respective pre-set stop, whereby the

Abstract: The present invention concerns improvements in the use of polyester materials in arc quenching applications, particularly in the cutout fuse tube industry. In one embodiment of the present invention a fuse tube is disclosed as comprising a laminate two-layered structure including as its inner layer, (or liner), a heat-treated polyester filament winding supported in a cured cyclo-aliphatic epoxy resin matrix. The outer layer includes wound glass filaments supported within a cured epoxy resin matrix. The heat treatment of the polyester filament substantially improves the mechanical and electrical character of the fuse tube.

Abstract: The present invention concerns the use of polyester materials in arc quenching applications, particularly in the cutout fuse tube industry. In one embodiment of the present invention a fuse tube is disclosed as comprising a laminate two-layered structure including as its inner layer, (or liner), a polyester filament winding supported in a cured cyclo-aliphatic epoxy resin matrix. The outer layer includes wound glass filaments supported within a cured epoxy resin matrix.

Abstract: In a grinding mill hollow drum structure a novel fastening assembly is provided for securing a discharge lifter between grates and a discharge head portion of the drum structure. The fastening assembly includes a hollow cantilever post having a body and a securing stem portion, being threaded or under tension or conical or the like, that adjoins the body at one end thereof and is accessible from outside the structure to receive a nut for releasably securing and adjusting the post in fixed relation to the discharge head portion. The post, once secured, provides a transverse load bearing capability for supporting the lifter, the wear plates and grates. A retaining structure surrounds the body of the post and cooperates with the discharge lifter to secure the lifter to the body.

Abstract: The self-adjusting limit switch assembly of this invention has two switches mounted on a slide for sliding movement on a bracket. A transverse slot in the slide has two facing surfaces. The switches are mounted on each side of the slot with their operating members extending slightly past the slot. The actuator is positioned to extend into the slot. When the brakes are first moved to the brake released position the actuator engages not only the operating member of the switch on that side, but also a wall of the slot and moves the slide to a brake released position thereby correctly adjusting the position of the switches. When the brakes require adjustment due to wear, the actuator engages the operating member of the second switch, as before, causing an indicator to function.

Abstract: A corona discharge monitor system for a dynamoelectric machine, particularly for large salient pole generators, has an antenna mounted on a rotor pole. The antenna sweeps over the stator slots and picks up radio frequency signals produced by corona activity occurring in the structure of the stator bars. A rotary coupler, having a rotating portion fixed to the shaft of the machine and a fixed portion adjacent to the rotating portion, couples the signal to a signal conditioner. A trigger signal synchronized with the rotor rotation and with a known reference to antenna position and derived from the power system line frequency, is used as one input to a storage device such as a variable persistence oscilloscope. A first output of the signal conditioner represents the peak amplitude of the corona discharge and a second output represents the number of corona occurrences and these are applied to the storage device.

Abstract: A two wire switching system is intended for use in a hostile environment such as a nuclear reactor where temperatures are in excess of 250.degree. or 300.degree. C. and where the use of a switch with a permanent magnet component or a component intended to have remanence is not desirable. The system uses eight reed switches each having three similar windings. No magnetized components are used. The switches are normally closed in the absence of a magnetic field and are opened when a net magnetic field results from current flowing through at least one winding. A pair of conductors interconnects the windings so that each conductor connects certain windings in a series arrangement to ground, giving a unique interconnection for each switch. A control current may be caused to flow in either conductor arrangement at a value of zero or plus or minus A or 2A amperes where A amperes is at least sufficient to cause actuation of a switch when it flows through one winding.

Abstract: Pencil type nuclear fuel elements having a metallic, locally flexible cladding containing discrete fuel pellets in end-to-end packed relation to form a stack of fuel pellets, wherein the pellets are provided with individual expansion provision, to substantially preclude longitudinal expansive movement, are provided with a boundary coat of non-bonding lining material interposed between the pellets and the cladding, to promote peripheral creep of the cladding, relative to the pellets, to reduce the incidence of rupture failure extending longitudinally of the cladding or sheath, due to zero gauge lengths expansion stresses.

Abstract: Hydraulic turbo machines are provided with air admitting and inducing arrangements in the draft tube, below the runner. This permits the admission of air in flow stabilizing relation, particularly at partial loads so as to diminish noise, vibration and cavitation, and to stabilize machine operation.

Abstract: A hydraulic turbo-machine such as a Francis turbine has a draft tube with air admission provision, to stabilize flow. A plurality of air boxes are provided having a long upstream surface and a short downstream surface to provide an inductive effect with the flow of water downwardly thereover. A non-return valve at the box downstream face substantially precludes the ingress of water within the box during conditions of disturbed flow, so that the breathing capability of the box is optimized.

Abstract: An arrangement for introducing air into the draft tube of turbo-hydraulic machines, in order to promote smooth running at part-load and to facilitate the achievement of full load, relies upon the use of a protective plate in covering relation with the air admission opening and cooperating with the structure located within the draft tube to act as an air eductor, in the manner of a venturi.

Abstract: The bearings for a rolling mill capable of carrying very large ore loads for grinding reduction therein are provided with an arrangement of a plurality of magnetic flux proximitors mounted in the bearing pads, to provide a readout of oil film thickness between the pads and the journal surface supported thereby. The arrangement permits achieving accurate alignment of the mill bearings in operation, and the control of operating conditions by maintaining the load bearing capacity within pre-set acceptable limits for the respective bearing.

Abstract: Apparatus for controlling the starting of a three-phase, salient pole, synchronous motor employs a signal representing slip frequency obtained from a power sensor connected to the motor supply. It requires no connection to the field coil or to other motor component. Since the signal can be obtained from a power sensor, the starting can be controlled from a location remote from the motor, for example at the motor control switchgear. A detector determines when the signal has decreased in frequency to a point representing a rotor speed where field excitation should be applied and it provides an output control signal. This control signal causes field excitation to be applied. In its broadest sense the apparatus may be used to indicate slip frequency remotely.

Abstract: A draping system, for use in clothing a pulp forming section with an endless belt, has a rigid top frame to receive a plurality of substantially rigid poles in mutually parallel, loop supporting relation thereon, and a lightweight lower frame having semi-rigid poles for insertion within the loop of the belt and detachable spacers for holding the semi-rigid poles in spaced apart relation, the lower frame being sufficiently light to be readily supported within the belt in loop extending relation by the belt, for transverse insertion into a forming section.

Abstract: In a portable domestic air humidifier of the rotating drum type, the improvement wherein a fill funnel occupies a portion of the periphery of the drum.

Abstract: A grass collector for a rotary lawn mower comprises a base and a pair of generally solid and concentric annular walls. A grass inlet is provided in the base preferably of volute form adapted to connect with an outlet in the mower deck. The collector is positioned on the deck of the mower substantially within the wheelbase thereof, contributing to increased stability of the mower, a baffle situated to the rear of the inlet wall interconnects the base and annular walls, a lid for the collector permits the egress of air therefrom.

Abstract: An axial gap, disc type, dynamoelectric machine has a stator housing, field pole structures located inside the housing at angularly spaced intervals, and a discoidal rotor. The field pole structures alternate with interpolar spaces. Fluid directing means are provided for inducing vortical fluid flow enhances heat transfer from the rotor to the housing.This invention relates to means for improving the cooling of axial gap, disc-type dynamoelectric machines, and in particular to means for inducing vortical flow of the cooling fluid in the interpolar spaces.Dynamoelectric machines of the general character suitable for embodiment of this invention are of the axial gap, disc-type such as, for example, the machine described in the applicant's United States application Ser. No. 534,058 filed Dec. 26, 1974, Eric Whiteley.

Abstract: A reactor fuel system has fuel pins secured to respective carrier rings as an inner sub-assembly and an outer sub-assembly for mutual telescoping relation, with radial spacing thimbles interconnecting the two assemblies and also permitting interconnection to adjacent assemblies to ensure axial coincidence of cooling flow paths. In the case of booster fuel of annular section, which may be rod-mounted for ready insertion into and withdrawal from the reactor core, the center passages of respective pins are brought into axial alignment to foster effective coolant circulation therethrough.