Abstract: A method of improving the airflow through a low to medium speed salient pole dynamoelectric machine DEM is disclosed. The rotor rim on which the salient poles are mounted is shortened in comparison to prior art structures so that the ends of the salient poles (and the rotor windings) protrude a substantial distance beyond the edge of the rim. A stationary or rotating shield is placed in juxtaposed relationship with the rotating ends of the salient poles to provide an enclosure so that the protruding ends of the salient poles can function as a crude radial fan.

Abstract: A flexible coining die for producing elongated bearing pads of a predetermined radius for use in nuclear reactors. The die is provided with a longitudinal groove having predetermined shape extending across the die. The die is supported by a block which will allow the die to bend at the groove so that the groove effectively "pinches" a bearing pad placed in the groove to be shaped during a coining operation. When the punch is withdrawn, the die returns to its undeflected shape and no longer "pinches" the bearing pad. The pad may be easily removed from the die.

Abstract: A metal anchor bracket which is embedded into the surface of a semi-solid concrete wall before the concrete has set. The bracket has a reference surface which when flush with the surface of the concrete wall produces a vertical surface which is perpendicular to the surface of the wall. The vertically extending surface provides an anchor for steel super structural members which are attached thereto. A second vertically extending leg is immersed into the soft concrete to anchor the bracket in the concrete.

Abstract: Stator bars and stator coils (winding elements) for a large dynamoelectric machine which are to be permanently placed in the slots of the magnetic core of the machine are wrapped so as to be surrounded on three sides with an elongated sheet of an elastomeric substance. A stretching device is attached to the two overlapping edges of the elastomeric sheet in such a manner as to be able to stretch the sheet around the winding element and thus reduce the thickness of the elastomer. The winding element surrounded by the stretched layer of the elastomeric substance is placed in a selected stator slot and the stretching device is detached from the elastomeric material. The elastomeric material attempts to regain its former thickness but is confined to the remaining space between the winding element and the sides of the slot. The offal is trimmed from the elastomeric substance and the winding element remains lodged in the slot.

Abstract: Apparatus for mounting a mill roll on a mill drive shaft in which mounting concentricity is produced by the internal expansion of the drive shaft to engage the bore of the mill roll. A secondary clamping device provides additional lateral binding force on the mill roll necessary for the production of the required frictional forces for the transmission of driving torque from the shaft to the mill roll.

Abstract: A device that stores and sanitizes toothbrushes in individual storage pockets in a vessel containing a sanitizing solution. Each storage pocket is formed in the top surface of the vessel in such a manner that the storage pocket is partially filled with sanitizing solution and in normal use, the pocket is sealed from the sanitizing fluid contained in the main vessel. When the sanitizing solution has served its useful life in the pockets of the vessel, the vessel is overturned, the used sanitizing liquid in each of the pockets is dumped out by over-turning the vessel. The vessel is then returned to its normal orientation, and the top of the vessel is raised slightly to allow the top of each pocket to slightly separate from the lower portion of each pocket to allow the sanitizing liquid in the vessel to flow into each pocket to replenish the sanitizing fluid in each pocket.

Abstract: A pouch useful for storage of valuables usually carried by a traveller. The pouch is designed for insertion into a suitable pocket of the traveller and an extending flap of said pouch overlaps the folded pouch and folds down over the exterior surface of the pocket to be secured to the surface by a button.

Abstract: This invention relates to the improvement in an erectable tray which is formed from a single blank of material. Co-operating flaps and tabs at the corners of the erected sidewalls provide positive latching to complete the assembly of the tray. The blank may comprise, paperboard, corrugated cardboard, or a cor plast material.

Abstract: This invention relates to a workshop mandrel which is suitable for mounting work pieces on its cylindraceous outer surface. A cavity beneath the surface is filled with hydraulic fluid which causes the outer surface to expand when the fluid is pressurized to lock a work piece on the mandrel.

Abstract: A method for manipulating motion ghosts is disclosed. The method includes acquiring two image data sets, each including a time averaged image component and a ghost component and processing these components to separate the ghosts from the desired image and further using the ghost information to produce a dynamic image. Motion monitoring systems are not required. Improved scan times and noise control are allowed over previous methods.

Abstract: There is disclosed a direct current motor drive system comprising a direct current motor operable in a forward motoring mode receiving current from a power source and in a reverse inversion mode providing inversion current to the power source. The drive system includes a converter for controlling motor operation. The converter converts alternating current, received from the power source, to direct current. The converter supplies direct current across terminals of the motor when operating in the forward motoring mode. The system includes an inversion fault current limiter for limiting inversion fault currents associated with motor operation in the reverse inversion mode without effecting the supply of current to the motor in the forward motoring mode. The inversion fault current limiter is electrically connected in series between the converter and one armature terminal of the motor. The inversion fault limiter includes a diode switch connected in parallel with a resistor.

Abstract: A commutator type, prior art dynamoelectric machine normally has an inlet for cooling air at the end of the machine remote from the commutator. The air flows from the inlet through axially extending passages in the rotor, outwardly through spaced radial ducts in the rotor, and into the air gap. Part of the air flows through the air gap to a collecting chamber at the commutator end of the machine to be discharged or exhausted. Part of the air flows radially outwards through interpolar spaces in the stator, through cooling ducts in the magnet frame to a peripheral passage which is connected to the collecting chamber at the commutator end. This invention provides a second collecting chamber at the drive end of the machine opposite the commutator end, communicating with the air gap and also with the peripheral passage at the drive end. Thus the air flow is divided after passing through the rotor and flows to the nearer collecting chamber providing a shorter flow path.

Abstract: In an optical pattern tracer which uses sample and hold circuits for signal processing filtering of the signal to reduce undershoot can be attained by manipulation of the sample and hold processing circuits. The present application varies the holding capacitor to produce a varied low pass filter effect.

Abstract: In an optical line tracer sudden changes of velocity can cause instability and vibration. Means are provided to limit acceleration or deceleration to a specific rate of change. Speed change signals are processed through a ramp circuit which converts the step function signal to a ramp function before application.

Abstract: In a busbar arrangement for a switchgear assembly where the load buses pass through apertures in riser supply buses the load buses are supported by the supply buses by insulating grommet blocks occupying the space between the load buses and the inner edges of the apertures. The grommet blocks are held in place by sleeves on the load buses.

Abstract: A cast iron or steel heat transfer member is used in network protectors to provide optimum cooling while avoiding prior corrosion problems.

Abstract: In a circular scanning pattern tracing system, a dual scanning pattern is provided to detect pattern changes in advance of the system steering axis. Pattern detection pulses from both the scanning patterns are adjustable in length and the overlap of the pulses is used to determine whether the system should slow down.

Abstract: In a circular scanning pattern tracing system having a sample and hold circuit, the width of the sample pulse is made adjustable. This variable width is equivalent to a variable low pass filter in the system. The effective cut off frequency of the filter is made dependent on the system tangential tracing velocity.

Abstract: The present invention applies to a circular scanning optical pattern tracer of the non-steering type. The scanner includes the normal circular scanning mirror and sensor and in addition a further circular scanning mirror and sensor to produce a scan of greater diameter than the normal scan. The signal from the second scan is used to indicate rapid changes of direction of the pattern by gating the produced signal through a gate produced from the normal scan.

Abstract: An optical pattern follower uses a photo matrix to scan a pattern. The scan pattern is determined by generating a series of point addresses storing such addresses and interrogating the matrix only when the point address in the matrix being scanned corresponds to an address in the store. The resulting signals are processed to produce direction velocity signals which cause the follower to follow the pattern at a predetermined tangential velocity.