Abstract: A round bale feeder for transporting and unwinding round bales of hay. The feeder includes wheeled frame carried on ground bearing wheels for towing behind vehicle, and tilting frame hinged to wheeled frame for tilting about hinge axis disposed normally to direction of travel. Front, mid and rear rollers journalled on tilting frame for rotation about axes parallel to hinge axis. Front and rear rollers are spaced apart sufficiently to support a complete round bale thereon, and mid-roller is sufficiently close to one of the remaining rollers to support bale when almost completely unwound. Tilting cylinder cooperates with tilting frame so that actuation of tilting cylinder rotates tilting frame to load bale thereon, and to support bale on rollers. Rollers are powered to rotate bale to unwind swath therefrom as feeder traverses distribution area.

Abstract: A chord indicator for keyboard instruments comprises an elongated panel having lights therein which will be aligned with each key when the panel is placed adjacent the keyboard. Two rows of lights are provided, one indicated the white keys and the black keys as sharps and the other indicating the black keys as flats. A chord selector mechanism comprises a base having spaced contacts thereon corresponding to the lights on the panel and a carriage movable along the base having contacts corresponding to the notes of selected chords. Chord selector switches permit selection of the type of chord to be displayed and the location of the carriage on the base permits selection of the root note of the chord. Electrical means permit the chord to be indicated as having either sharps or flats as appropriate for the selected chord. In use a chord type is selected, a root note is selected, and the lights on the panel aligned with the keys corresponding to the notes of the selected chord will be illuminated.

Abstract: A screw and complementary screw driver for use in relatively inaccessible places where, with conventional tools, difficulty would be encountered in locating the screw on end of screw driver in axial alignment therewith. Screw driver has a generally V-shaped screw engaging means having a root portion extending from screw driver stem, and a transverse portion interconnecting root portion with an oblique portion, the oblique portion extending obliquely to transverse portion. Screw has bridge portion with clearance passage extending under bridge portion to accept the V-shaped means, passage having clearance at inner and outer ends for insertion and removal of screw driver. Stop member is threaded onto outer end of oblique portion to draw screw driver into axial alignment with screw and to maintain screw on end of screw driver for all inclinations of screw driver.

Abstract: Fence post assembly including generally Y sectioned post with V sectioned anchor plate secured to post at lower end thereof. When the V sectioned anchor plate is embedded in soil, it provides greater resistance to lateral movement through soil under oblique forces applied to post than prior art flat anchor plates. V-sectioned anchor plate also tends to self-stabilize plate to align it to resist movement under oblique forces. Post has three outwards extending flanges, two of which are inclined to each other to define V therebetween. Anchor plate has two wings inclined to each other at similar V so as to fit in V of post. Post has plate location means which include notches in outer edges of the two flanges. Anchor plate has connecting means for securing anchor plate to fence post, which means include complementary pair of tangs extending from wings, the tangs engaging the notches in the flanges to sandwich the flanges between tangs and wings.

Abstract: A rudder post tube assembly for sailing craft having an inverted frusto-conical shell rotatably fitting in an inverted frusto-conical casing which opens out of the bottom of the craft. A rudder post tube is secured to the wall of the shell for rotatably supporting a rudder post of a rudder assembly so that the rudder post can be canted to port or starboard of the vertical axis of the craft by rotatably adjusting the position of the shell within the casing.

Abstract: Disc brake for heavy-duty application in which peripheral portion of disc has cooling passages to conduct cooling liquid therethrough to remove heat generated by braking. Rotary seal cooperating with disc conducts cool liquid to and if desired can return warmed liquid from the cooling passages. Cooling passages are generally zig-zag shaped and disposed adjacent and extend between braking faces of disc. Passages include plurality of radially and tangentially disposed passages connected by adjacent inner and outer ends. Tangentially disposed passage portions are shorter than radially disposed passage portions. Radially disposed portions are separated by partitions having generally parallel side walls so as to eliminate relatively thick portions of material to reduce formation of hot spots on braking faces.

Abstract: Reciprocating piston machine having a pair of spaced, parallel, double-ended cylinders straddling a crankshaft with a single crankpin. First and second double-ended pistons reciprocate within respective cylinders and are connected to crankshaft by T-shaped connecting member journalled on crosshead. Crosshead reciprocates on the crosshead guides positioned between and parallel to the cylinders. Connecting member has outer ends of piston connecting arms slidably and rotatably connected to pistons to accommodate changes in angle of connecting member, with outer end of crank connecting arm journalled on crankpin. Clearance openings extend between inner side walls of cylinder and crankcase to accept piston connecting arms, outer ends of openings serving as inlet ports. Exhaust ports are provided on generally opposite side of cylinder to inlet ports to permit efficient scavenging of spent charge.

Abstract: Automatic valve assembly connected to outlet from clothes dryer to selectively add heat and humidity to building. Bifurcated exhaust duct assembly has manual valve and filter in first duct to exhaust into building, and automatic valve in second duct to exhaust outside building. Automatic valve is retained closed by releasable latch means which releases valve automatically when filter becomes clogged with lint to such an extent as to generate excessive exhaust pressure on upstream side of valve. Valve plate is journalled on off-centered hinge axis so as to swing to open position when exposed to exhaust flow. Pressure sensing means exposed to exhaust pressure cooperates with latch means to release the latch means when exhaust pressure exceeds pre-determined excess. Steadying means cooperates with opened valve plate to maintain plate in open position which produces negligible restriction of flow past automatic valve.

Abstract: A retractable roller assembly for luggage and the like which has a casing adapted to be secured to the luggage having an elongated opening on a lower edge. The side walls of the casing have a pair of aligned circular sockets which fittedly and rotatably receive circular cheek-plates of a bifurcated yoke. A roller is mounted between the cheek-plates for rotation about an axis eccentric to the axis of rotation of the cheek-plates so that the roller can be moved between a hidden position entirely within the casing and an operative position extending from the casing, by rotatably adjusting the yoke.

Abstract: An air heater for installation in a fireplace located in a room to be heated having a lower metalic portion having a hollow back wall surmounted by a flue portion also having a hollow back wall communicating with the hollow back wall of the lower portion so as to form a common heating chamber. The heating chamber has an opening at its lower end for receiving air to be heated from outside of the room in which the fireplace is located and has a plurality of ducts extending across the flue portion at the upper end of the heating chamber for permitting escape of the heated air into the room to be heated and a vent pipe extending from the upper end of the heating chamber to vent heated air outside of the room in which the fireplace is located. The air ducts and vent pipe are opened and closed by the operation of valves so arranged that when the air ducts are opened to the passage of air the vent pipe is closed and the vent pipe is open when the air ducts are closed.

Abstract: Core sampling drill head having powered drill chuck with jaws to grip drill rod. Head has thrust member movable by chuck actuating means between jaws retracted and jaws extended position, and precompressed chuck springs cooperating with thrust member and drill chuck so as to be movable with thrust member. Thrust member is located by releasable locking means in desired position, which means also relieve drill bearings of reaction from chuck springs. When thrust member is in jaws retracted position, chuck springs are precompressed by tension means and relatively large diameter tools can pass drill chuck. When thrust member is in jaws extended position, chuck springs cooperate with chuck, are further compressed and extend jaws to grip rod, and tension means are relieved of load from chuck springs. By precompressing and moving springs by themselves, worn drill rods can be accommodated in relatively short drill head without loss of grip.

Abstract: Coupling device for coupling releasably electrical fixture to electrical outlet adjacent building surface. Device has female assembly connected to electrical outlet box and power, the assembly having three female supporting lugs with engagement means. Respective electrical contacts are secured adjacent each lug and spaced from lug to provide gap between the lug and contact. Male assembly is connected to fixture and has three complementary male supporting lugs with engagement means complementary to the respective engagement means of female lug. Each male lug has contact extending along upper surface thereof to fit between female lug and respective contact. When male assembly is inserted into the female assembly and rotated relative thereto, engagement means of each lug engage complementary engagement means of opposite lug and respective contacts are forced into and maintain engagement so as to conduct electricity.

Abstract: A method of securing a nail end-driven into a sheet of particle board in which a staple is driven through the particle board and ends of the legs clenched inwardly against side surface of the particle board in a direction normal to the side surfaces of the board so as to increase purchase of the end-driven nail driven between the staple legs.

Abstract: Fire escape apparatus having a flight of stairs formed of a smooth material having treads and risers and which is mounted beneath a balcony for swinging movement between a horizontal position and a downwardly inclined position, the treads and risers being so shaped that when the flight of stairs is in the inclined position, the treads slope inwardly and downwardly and the risers curve outwardly and downwardly to the treads so as to facilitate descent in a sitting position and to enable the stairs to be climbed in a normal manner.

Abstract: Applicator for applying transverse traction sections to an automobile tire having a toothed cog mounted on the outer surface of the hub at each of the openings between the hub and rim, which are connected in driving engagement with a manually operated worm-gear drive unit, the lead of the worm being such as to lock the cog against rotation of its own accord. A perforated steel ribbon slidably extends out of one end of a sheath secured diametrically across the wheel hub, and passes over and in meshing engagement with the cog and extends through a channel secured to the rim at the opening. The steel ribbon is so arranged so that when the cog is operated to extend the steel ribbon out of the sheath, the lead end of the ribbon will curl around the tire from the inside to the outside so as to enable one end of a traction section to be secured thereto and then drawn over the tire by retracting the ribbon into the sheath.

Abstract: A synergistic compound containing liquor picis carbonis, resorcin, menthol, pure water and isopropanol.

Abstract: Fire escape for use in multi-storied building having floors spaced generally equally from adjacent floors at floor spacing. Fire escape has fire resistant, vertical, hollow outer column and similar inner column positioned generally centrally within outer column. Outer and inner columns have generally oval-sectioned inner and outer wall respectively spaced apart to provide columnar space therebetween. Chute within columnar space follows generally helical path of essentially constant pitch of twice floor spacing so that one complete circuit of chute passes two floors. In one embodiment for wide floor spacing, inner column is hollow and has column floors disposed therein level with floors outside outer column and spiral stairway spaced above chute to follow chute with sufficient head room for persons on the chute or stairway. Person escaping enters outer column through door opening, and can descend stairs directly; or through openings in inner column can descend by chute.

Abstract: A door stop assembly having a wedge-shaped stop member formed of a resilient material and having a pair of cylindrical projections extending in spaced longitudinal alignment from the undersurface thereof and a stop plate having two pairs of spaced longitudinally disposed openings adapted to receive projections of the stop member. The plate is positioned adjacent the door so that the stop member can be disposed in a jamming position to hold the door closed and a stop position in which the door can be opened slightly.

Abstract: Tilting ramp assembly for fitting to fishing vessel for assisting in raising fishing nets, and launching and recovery of small boats. Assembly has fixed portion secured adjacent the stern of the vessel and moving portion hinged thereto with roller journalled at outer end. Hydraulic cylinder extends between fixed and moving portions for swinging the portions between raised and lowered positions. Spooling gear mounted on ramp assembly feeds rope smoothly onto winch and has spool guides which are removeable when the net is drawn up the ramp, and also serve as skiff guides when hauling skiff up ramp. When raising the net, ramp moves simultaneously from lowered position to raised positon as net swings upwards, reducing crushing of fish.

Abstract: A multi-rotor electric motor having a wound main rotor mounted on a drive shaft which is rotatable within a cup-shaped stator, which is so wound, that when connected to a source of polyphase power, as to provide a rotating magnetic field. A second rotor equipped with permanent magnets is mounted for rotation about and exteriorly of the stator and which are effected by the rotating magnetic field so as to tend to rotate the second rotor at synchronous speeds in the same direction as the main rotor. The two rotors are normally connected for mutual rotation between starting speed and pre-determined speed less than synchronous speed by a spring-closed centrifugally-opened clutch assembly which disengages when the main rotor reaches said pre-determined speed so as to enable both rotors to rotate independently of each other and which re-engages both rotors for mutual rotation when the speed of the main rotor falls below said pre-determined speed.