Abstract: Apparatus for conducting arm wrestling (wrist pulling) contests between a pair of opposed contestants comprising a playing surface in which a lever arm is adapted for pivotal side-to-side motion. The opposed contestants each grip a laterally spaced portion of the lever arm in an attempt to force such to one side of its travel limit and against the opponent's urging. The ends of the lever arm are adapted to contact signal means extending above the playing surface at the opposite ends of the travel limit of such lever arm which are in turn activated upon contacting the lever arm so as to signal a contest winner.

Abstract: A device for signaling the presence or absence of mail in mailboxes and the like. The device may be either furnished as a kit for retrofit of present mailboxes or in combination with a new mailbox. A signal member generally comprising a plate having reflector buttons mounted on opposite sides thereof is pivotally supported from a bracket in turn adapted for mounting upon the upper surface of the mailbox. The upper portion of the plate includes a forwardly downwardly extending arm terminating in a finger adapted for frictional engagement with a finger which forms the terminal portion of an arm rearwardly extending from the front door of the mailbox. When the fingers are in frictional engagement with each other, the plate is maintained in a generally horizontal attitude parallel to the top of the mailbox such that the reflectors are not generally visible.

Abstract: Apparatus for conducting arm wrestling (wrist pulling) contests between a pair of opposed contestants comprising a frame generally of semi-circular configuration and defining an upright plane in which a lever arm is adapted for pivotal side-to-side motion. The opposed contestants each grip a portion of the lever arm in an attempt to force such to one side of its travel limit defined by the frame and against the opponent's urging. The upper end or ends of the lever arm are positioned within an arcuately-shaped track defined by the frame and signal devices are provided which are in turn activated upon the contacting limit switches positioned at opposed sides of the frame.

Abstract: A construction such as a building or the like in which banking transactions can be conducted in a more secure and businesslike manner. In essence, the structure is divided into a banking area and a teller's area by a security wall against which a plurality of individual booths are constructed in the banking area. Various communication and security means are provided in the booth such that the booth is locked from the teller's area such that robberies are initially discouraged and, if attempted, successfully foiled by the locking of the attempted robber in the booth to await security forces such as the police. In addition, the booths are each provided with a transaction opening in the security wall such that money, checks, etc. may pass between the teller's area and the booth. This transaction opening is adapted to be closed by a slidable door in the event that the opening is utilized to stage an attempted robbery.

Abstract: A plow attachment for a roto-tiller wherein the roto-tiller includes a frame, a gear housing downwardly extending from the frame, means for driving a front axle shaft on each side of the gear housing, rear guide wheels, and means for driving said front wheels including a gear housing downwardly extending from the frame between said front wheels. The attachment includes a blade suspended from the forward end of a yoke which in turn includes a pair of parallel rearwardly extending members positioned so as to straddle the gear housing and a pair of front driving wheels. The yoke is pivotally mounted at the rear ends thereof to a pair of legs downwardly extending from the frame. A lift lever is pivotally mounted to the frame at an intermediate portion and connected at its forward end to the blade.