Abstract: An expansion joint lock for transmitting forces between structural members that contract as they are cooled down to operating temperatures. A piston member mounted to one structural member is slidingly engaged with a chamber in a reception member which is mounted to a second structural member. The remaining space in the chamber is filled with a liquid which freezes at a temperature somewhat above the operating temperature of the structure, allowing forces to be transmitted between the structural members by the frozen liquid.

Abstract: Ventilating apparatus having an exhaust hood for mounting above a stove, grill, or other apparatus from which fumes arise. Ambient air from outside the room being ventilated is forced into an insulated intake chamber within the exhaust hood through a relatively narrow longitudinal slot at the bottom of the intake chamber, thence directed rearwardly and upwardly across a fume collection chamber, through a grease filter, and into an exhaust chamber from which the fumes are exhausted to the atmosphere by a fan. The outside air is forced through the slot in a fast moving narrow stream to form an air curtain across the fume chamber with minimal mixing of the fume laden air and the air curtain. Tempered air is introduced into the room being ventilated adjacent the exhaust hood to provide a minimum influx of tempered air from the room being ventilated into the hood to prevent dissipation fumes into the room, and to facilitate collection of such fume laden air by the exhaust hood.

Abstract: A method for detecting the presence, location, and concentration of moisture in multiple layer built-up roofs. A plurality of spaced points are first marked and located on the roof to be tested. The relative dielectric constant of the roof at each of the spaced points is then measured, the measurements are recorded, and each measurement is associated with the location of the point at which the measurement was taken. The magnitude of the relative dielectric constant of the roof is proportional to the relative concentration of moisture in the roof covering, thus allowing the points at wet portions of the roof to be distinguished from points at dry portions of the roof. Statistical methods may be employed to better separate the measurements taken at dry points on the roof from measurements close in magnitude which are taken at wet points on the roof.

Abstract: A paperboard carton and blank therefor for displaying a product such as bacon having a top panel with a cut-out viewing area and hinged inspection flap adjacent a reinforced edge portion formed by a glue flap overlapping the edge section of the top panel.

Abstract: Generally, each of my chock embodiments has one or more of the following features: a rigid body having a nonsuperficial recessed surface portion or portions on one or more of its working surfaces for saddling a rock formation; a cap portion along the top edge of each working surface of the rigid body; a runner aperture opening solely on the bottom surface of the rigid body; a separate anchor wedged in the runner aperture for securing the runner and reinforcing the rigid body; a runner anchor recessed from the top and/or bottom surfaces of the rigid body; a double loop cable runner; and in the smallest sizes, a rigid body having one or more hooked portions for setting over a constriction of a crack in a rock formation and a second portion protruding from the crack for securing a runner.

Abstract: A bow string release device having a hand grip member and a rotatable latch mounted thereto which engages a bow string in an open position and rotates to a closed position to securely hold the bow string. A trigger member is slidably moveable in its entirety in a straight line within the hand grip member and slidingly engages the latch member to hold it in its closed position. The trigger member is moved rearwardly in the hand grip member by being squeezed by a finger of an archer until the trigger member clears the latch member, at which point the latch member is free to rotate to its open position and release the bow string. A wrist belt is attached to the hand grip member to aid the archer in drawing back the bow string.

Abstract: A coin-controlled, manually operable golf ball vending machine. The vending machine has a ball hopper and a ramp below the hopper defining a ball dispensing opening between them. A gate rotatably mounted at the opening, extends partially thereacross in its closed position to cause the balls to bridge the opening and is swung into the mass of balls to break up the bridging of balls for releasing them down the ramp when the actuating lever is pulled. The balls on the ramp are received in descending ballways for introduction into ball tubes formed in a rotatable cylinder extending across the bottom of the ballways. The actuating lever is operatively linked to both the gate and the cylindrical ball receiver for simultaneously rotating the gate to release balls down the ramp and the ball receiver for dumping balls therefrom. The actuating lever is maintained inoperative by a coin-releasable locking mechanism.