Abstract: An irrigation system for irrigating an area of a field and which includes a liquid conduit extending over a portion of said area to be irrigated. The conduit is supported by wheels which rotate with rotation of the conduit. The system includes a drive unit which is supported for movement on the ground along a path by wheels which are rotatably mounted thereto. The conduit is rotatably mounted to the drive unit for rotation about a generally horizontal axis generally normal to the defined path of the drive unit. The drive unit supplies liquid to the conduit and includes means for rotatably driving the conduit and for driving the drive unit along the path, and further includes a control system for selectively varying the relative speed of the drive unit and conduit in response to fore and aft displacement of the drive unit relative to the conduit.

Abstract: A towable center-pivot irrigation system having a liquid conduit communicating with a liquid source and extending generally radially from a center-pivot location. The conduit is supported along its length by spaced support towers which move in generally circular paths about the pivot location. Liquid dispensers are spaced along the conduit. At the pivot location, the system has a pivot assembly which structurally supports the end of the conduit near the pivot location above the ground. During operation of the system the structural support turns with the system about the pivot location.

Abstract: An apparatus and method for folding one or more continuous single or multiple ply webs wherein the webs are guided generally downwardly by an oscillating arm that oscillates fore and aft about a horizontal transverse axis relative to the direction the web travels, and directed by the oscillating arm alternately between opposed folding assemblies. The folding assemblies have a plurality of gripper means which travel continuously about a preselected path and receive the web at locations where the folds are to occur, then grip and thus fold the web, and thereafter release the web allowing it to exit downwardly in a folded configuration. The apparatus and method possess high speed capabilities in providing a parallelogram linkage for driving the oscillating arm and by timing the gripper means of the folding assemblies to close more rapidly and grip the web fed thereto by the oscillating arm.

Abstract: A shoe shank support suitable for being molded into a unit sole for a ladies high heel shoe provides increased stability and resistance to flexing and comprises a shank of metal strapping sufficiently long to extend from the heel area to approximately the beginning of the ball of the foot and a heel post which extends the height of the heel. The shank may be generally flattened and include a strengthening rib or it may be oval in shape. The heel post is attached to the heel area of the shank by being inserted through a hole and tightened in position by a reversed wing nut. The threaded end of the heel post extends the length of the heel and protrudes a small distance therefrom to provide a mounting for top lifts on the bottom of the heel. Additional holes may be provided in the shank for positioning the shank in a mold and preventing slippage of the shank during the molding process.

Abstract: A device for testing smoke detector alarms comprises a base housing upon which is mounted an extendable telescopic assembly comprising three tubes, with the top tube having a combustible pellet mounted at its upper end. The pellet is composed of a substance that smolders upon heating rather than flaming or exploding. The housing contains electrical batteries wired in circuit with a heating element mounted adjacent the combustible pellet so that a switch can be operated to heat the heating element and cause the pellet to smolder so that smoke emerges from the pellet. The testing device can be placed in the extended position and the pellet held near a smoke detector and burned to ascertain whether the smoke detector alarm is functioning properly. After use the testing device can be placed in a compact storage position by sliding the extendable telescopic tubes so that they fit within each other.

Abstract: An indicia-supporting clip has a plurality of fingers which directly engage and hold an edge of an indicia, and has a board-indicating portion which engages and is held by a signboard to releasably hold that indicia in engagement with that signboard.

Abstract: A coin separating device has a movable coin director which is mounted intermediate an inlet for coins of different predetermined diameters and a plurality of outlets that are generally in register with each other but that are located in separate planes. That coin director responds to the reception thereby of a coin of one of those predetermined diameters to be in a position to direct that coin to one of those outlets; and that coin director responds to the reception thereby of a further coin of another of those predetermined diameters to be in a different position to direct that further coin to another of those outlets.

Abstract: A cable release and latch for a security guard hinged to a window or the like has a spring loaded plunger swedged into an outer frame thereof. An armored cable with a flexible inner cable is connected to the spring loaded plunger and extends to a foot treadle operator and shield which may be mounted on the floor inside the opening. Sufficient length of cable is provided to allow free movement of the guard about its hinges. The security guard may thereby be quickly and easily opened without a key by stepping on the foot treadle operator. If the armored cable is severed, the spring loaded plunger advances further into the keeper which retracts the flexible cable within the armored housing to prevent the manual operation of the latch without further dismantling of the cable.

Abstract: An automatic hitch with safety lock may be mounted on a tractor or the like and has two laterally opposed jaws and a hook member pivotally connected therebetween and provides completely automatic latching and unlatching to an upstanding pin provided on a wagon or trailer. The latch has a combination release and spring operator for remotely retracting the hook member and unlatching the pin from the hitch. A safety lock has a lock shaft which rides a shoulder on the hook member and prevents the hook member from being retracted to an open position until the lock shaft is retracted from a position adjacent the shoulder. The safety lock may be remotely operated and has a spring biasing it into the locked position. A manual lock pin may be inserted to effectively disable the automatic operation of the hitch. A mounting plate is used to attach the hitch to a tractor or other vehicle and shock absorber springs are provided between the hitch portion and the mounting plate.

Abstract: A security device for a boat propellor that is retained by a releasable lock to a propellor shaft has been developed and is disclosed as including cover means to prevent access to the releasable lock on the propellor shaft, and means for releasably retaining the cover means to the propellor to prevent unauthorized removal thereof.

Abstract: A self-restoring torque-limiting torque-transmitting linkage, for the rudder arm and rudder which drive the pin-moving paddle of an automatic pin setting machine for a lane of a bowling alley, will yield to permit that paddle to be moved if it is engaged by a bowling ball which is exiting from the area at the rear of that lane. That linkage has a first rotatable member and a second rotatable member which normally are held for conjoint rotation by a spring. The first rotatable member is rotated by an eccentric pin on a pulley of the automatic pin setting machine, the second rotatable member is secured to the rudder arm of that automatic pin setting machine to effect rotation of that rudder arm, and the spring normally forces the second rotatable member, and hence the rudder arm and rudder and paddle, to rotate with the first rotatable member.

Abstract: A shoe having a partial liner is disclosed. The shoe is unlined single thickness leather having a partial leather girdle in the interior. The girdle is of reduced thickness and extends transversely across the foot from sole edge to sole edge and from a point just behind the box toe or toe stiffening area of the shoe to a point slightly behind the bunion joint portion of the foot, that is, to the longitudinal arch area. The girdle is skived at the periphery to prevent its being visible from outside the shoe. The girdle may be perforated on all or a portion of its surface to facilitate cooling of the foot. The perforations may extend entirely through the shoe for additional cooling. The girdle is placed with the grain side of the leather next to the foot and is oriented so that the stretch of the girdle is transverse to the stretch of the vamp of the shoe. Normally the maximum stretch of the girdle is longitudinal to the shoe and the maximum stretch of the vamp is transverse of the shoe.

Abstract: A dental handpiece having a cross head with one end capped and the other end open, a driven gear in the capped end having a thrust bearing against the cap, and a fixed bearing extending from the gear to the open end with a driven shaft rotatably mounted in the bearing; a threaded socket in the driven shaft to receive the complementary attaching means on a dental tool, a cylindrical recess in the open end to receive a flange on the tool and grooves in the driven shaft to restrain travel of abrasive from the open end toward the closed end thereof, the bearing being long enough to give complete bearing support for the rotating mechanism.

Abstract: An animal feed bunk has a base of arcuate cross section which in the upright feeding position supports above it a trough of arcuate cross section. The base can be detached from the trough, and inverted relative to the trough and reattached to the trough so that the bunk in the inverted position occupies much less space than in the upright position, and has its parts firmly secured to one another to prevent them from being misplaced or lost. In the inverted position, a plurality of bunks may be stacked sturdily upon one another, so that a bottom bunk in the stack has a substantial part of its base and trough fitted snugly within the trough of the bunk above it.

Abstract: A center pivot irrigation system having an elongated concuit assembly with an inner end pivotally connected to a water source at a center pivot and having a plurality of discharge nozzles at spaced intervals along its length has one or more short range and a long range end gun mounted near the outer end of the conduit for irrigating the corner areas of a rectangular or square field. The long range end gun is adjusted to have a spray pattern which extends inwardly to provide water to that area normally irrigated by the sprinklers along the outer section of conduit in addition to an area extending beyond the outer edge of the arc farther than that covered by the short range guns. By turning off sprinklers along a section of conduit, water is diverted to help provide a sufficient pressure and flow rate as is necessary for efficient operation of the long range end gun.

Abstract: A welding machine can form continuous welds of three hundred and sixty degrees on workpieces which are rotated through angles of less than three hundred and sixty degrees by moving the welding torch of that welding machine in one direction circumferentially of those workpieces while those workpieces are being rotated in the opposite direction.

Abstract: A wheelchair is constructed so as to be able to mount curbs, and overcome similar obstacles. In front and above each main wheel of the wheelchair, an auxiliary wheel or wheels are mounted, so that the auxiliary wheels will contact the obstacle at a point on their circumference below their center in such a way that they are able to ride up over the obstacle and lift the main wheels to a position where they can do likewise.

Abstract: A movable platform supports a bottle for liquefied petroleum gas, a pointer is connected to that platform to move when that platform moves, and adjustable spring means urge that platform to move in a direction which will move that pointer toward an "empty" position but that adjustable spring means will permit a "full" bottle to hold that platform in a position wherein that pointer is spaced away from that empty position.

Abstract: A mouthpiece practice holder has a base which approximates the envelope of that portion of a brass instrument normally held by the left hand and supports a mouthpiece from a brass instrument for practice playing or buzzing. A mouthpiece rod is adjustably supported from the base by a guide and tightener assembly and a mouthpiece receiver attached to the end of the mouthpiece rod has a taper to slidably receive and retain the mouthpiece. Practice valves may be provided in the base so that the right hand may "finger" the note being played or buzzed as the left hand holds the base. A rimpiece holder supports only a rim from a mouthpiece and may be inserted into the mouthpiece receiver as a substitute for the mouthpiece to permit closer observation of the lips, etc. in relation to the mouthpiece rim as the rim is "buzzed". The guide and tightener assembly may be slightly modified and used to control the tuning of an instrument which is tuned from the mouthpipe or bell.

Abstract: A hammer has a head having a recessed face. The recess in one modification is formed by having four isosceles triangular slanted sections extending inward from the outer edge of the face. In another modification the face has a curved recess. The hammer head has flat exterior side surfaces and the head is positional close to the center line of the handle. The hammer claw has a rectangular notch between the two claw fingers, making the claw especially adaptable for disengaging tie-wire loops or bolt ends with slots in their outer ends. The hammer is useful for driving objects such as nails, pins, and wedges, and is especially useful in work involving concrete forms.