Abstract: A wireless form of humidity control for residential and other uses and comprising; a carrier current type of transmitter and receiver used in combination and within a conventional electrical wiring system for a building, said transmitter including a step-down transformer and a humidity sensing device disposed in compact and close proximity and with the latter provided in the power supply line for said transformer for intermittent actuation of said transformer and consequent minimal heat generation therefrom, said transmitter and receiver having an operating frequency of at least half again that of the carrier wiring and said receiver having capacitance in the signal receptive connections thereto sufficient to provide an impedance low enough to pass a given high frequency signal and high enough to block the line potential frequency and variations incident thereto.

Abstract: Wind and rack resistant cross bracing for wood truss building wall construction and which includes a metal strip or strap formed to include a pair of oppositely disposed lateral flanges having a depending reversely bent or U-shaped leg therebetween with a rolled bead formed in one or both opposite side walls; to extend the full length thereof and provide spring resistant spacing of the side walls of the leg portion for tight fitted engagement in a receptive channel groove or slot in the wall studs with which it is used and added rigidity against compressive loads in use and service.

Abstract: A saw horse for general purpose use and comprising a horizontal member having a pair of supporting legs provided at each end, and is conventionally known, and in which the horizontal member and its legs are made out of sheet metal formed to a general channel shape in cross-section, the legs are pinned to the cross member so that they may be folded up to lay flat against the horizontal member, or erected to extend downward and outwardly below it, and with a spring set locking means to fix and keep the legs erect or allow them to be folded up, as and when desired.

Abstract: A screen door hinged for cooperation with and actuation separate from an outer closure door, and comprising; a peripheral frame including a full length hinge supported side rail, a second laterally spaced and relatively parallel side rail having an interruption between its ends, and cross rails connecting the outer and inner ends of said second side rail to said first mentioned side rail for providing relatively separate upper and lower screen receptive sections; and a member bridging the interruption in said second side rail and offset inwardly between the inner ends thereof for providing, with other spacer and channel grooved members, a recessed and reinforced center section for accomodating the handle and latch mechanism of the outer door member and making them more accessible when used in close association with an outer door closure member.

Abstract: A retractable step for camper-trailers, motor homes and other uses, and comprising; a supporting member which is mounted under a doorway and has a step member connected to it by pivotal linkage which enables the step member to be raised and retracted under the threshold of the doorway for storage or lowered and extended in front of it for use; and with means for biasing the step member into its usable position and other means responsive to vehicle engine vacuum pressure for automatically retracting it into storage.

Abstract: Apparatus for pealing the leading end from sheet steel stock material which is rolled in a coil for easier handling in automated stamping equipment, and for guiding it and the subsequent trailing end of the coil immediately into debending and straightening apparatus which is closely next adjacent thereto. The debender includes fixed and movable dies that are complimentary, are mounted in-line with and immediately between the coil-end pealer and the stock feeding pinch rolls, with the movable die mounted on a channel beam section which also carries the piston cylinders operative thereof. The pealer, debender and pinch rolls all being mounted on and between common side wall supports in sufficiently closely spaced proximity to each other for the greatest proficiency and stock handling ease.

Abstract: Means for providing protective cover walls on carrier racks used by the railroads to carry automotive vehicles, and including panel wall sections made up of lengths of corrugated sheet metal retained in overlapped and interlocked edge relation by channel sectioned members engaged over the ends thereof, and with clamping means for holding the channel sectioned members on the ends of said panel wall sections and the panel wall sections in turn therewith to the vertical frame members of the carrier racks.

Abstract: A steering axle assembly for a motor vehicle, including an axle, at least one king pin mounted at one end of the axle, a pivotal steering knuckle having a bore rotatably receiving the king pin, a closure cap mounted on the steering knuckle for closing the bore, and an annular sealing element disposed between the end cap and the knuckle. The end cap includes an annular recess for receiving a portion of the sealing element, a central, lubricant reservoir in alignment with the bore, and a lubricant check valve which permits lubricant to pass only outwardly from the reservoir.

Abstract: A locking device for male electrical plugs and which includes a body member with slots receptive of the contact making terminals of the electrical plug, first means in the body member projecting into the slots to engage and hold the body member to the contact terminals, and a second means insertable into the slots to hold the first means retracted and allow disassociation of the electrical plug from the body member.

Abstract: Cover wall construction particularly suited for shipboard modernization and including a supporting wall structure installed in front of a wall to be covered, vinyl clad flat surfaced aluminum wall panels, and wall panel retaining members formed for like use at baseboard levels, ceiling height and between next adjacent wall panels to retain the wall panels in fastenerless engagement with the supporting structure provided therebehind.

Abstract: A holder for a retractable cutting tool holder and which includes a housing having a bore within which is provided the retractable tool holder with its operative end extending therebeyond, a piston member in the bore operatively engaged with the retractable holder, adjustable means for setting the stroke of the piston and thereby the cutting depth of the work tool, and air pressure passageways in communication with opposite sides of said piston for selectively advancing and providing support for the work tool and subsequently simultaneously removing said support and retracting said tool without leaving tool witness marks on a work piece.

Abstract: A bearing unit including a sleeve internally mounting a spiral bushing which journals a bearing pin. At least one annular sealing ring is internally carried by the sleeve which rotatably receives and is sealed to the pin. A retaining ring, which is axially retained by the sleeve, axially retains the sealing ring.

Abstract: An enclosed passageway which provides a housing that is open at one end and has a back closure wall on which is mounted a trap mechanism that is capable of being both set and baited from outside the enclosed housing without handling the trap mechanism itself, and which is disposable or capable of having the entrapped and killed animal displaced therefrom without personal contact.

Abstract: An all purpose wagon vehicle for general farm use, including an undercarriage frame on which is provided a dump box having a floor and fixed front and side walls standing thereover, with the dump box being tiltable on the undercarriage frame to discharge whatever it carries rearwardly, and a rear wall closure door which is hinged to the side walls forwardly of the normal upper back edge corners to open only upon the appreciable tilting of the dump box and without ground interference. And, a special latching mechanism operative in the course of tilting the dump box on the frame, to automatically allow the closure door to open or be held closed.

Abstract: A U-shaped strap providing a frame with upturned ends and having an annular ring pivotally engaged at diametrically opposite sides to the upturned ends, one of which also serves as a handle loop, and with the annular ring disposed transversely to receive a cup therewithin or disposed in relative alignment with the frame strap for non-use and storage. And with further improvements allowing more compact folding and a smaller collapsed size thereof.

Abstract: A bi-fold door assembly including a pair of bi-fold door panels hinged together and having means for fixed pivotal location provided at the upper and lower disposed corners of the first door panel and means for guided pivotal retention provided at the upper and lower disposed corners of the second door panel, on respective guide tracks. The pivotal location means including pivot brackets of a new and different design formed from a single stamping and the other means including slide blocks having snap lock engagement with guide pins used therewith and which are of a particular design to best serve their intended purpose.

Abstract: A device for locating mass centers, checking rotational axes and correcting for imbalance in work pieces, which includes a first and a second set of knife edge supports transversely disposed with respect to each other and having a first member received and balanced on one set of knife edge supports, for establishing a first coordinate axis, a second member received and balanced on the second set of knife edge supports, which are provided between the two members, and establish a second coordinate axis, and means for separately sensing and relaying imbalance data with respect to the two coordinate axes and as regards a workpiece received and supported on the two members in combination.

Abstract: An operative mechanism for use in combination with a rear view mirror assembly and which comprises: sealing housing parts forming an enclosure for component parts that are preassembled and include, a small reversible electric motor, screw threaded shaft and travel nut arrangement, together with a follower arm and pivot pin assembly received in operative engagement with each other within receptive and functional housing walls to provide a small, compact device for pivotal control and viewing adjustment of the rear view mirror.