Abstract: A bird perch alarm characterized by a perch assembly responsive to the weight of a bird, the movement thereof completing electrical circuitry and causing an audible signal. Resilient means form a part of the perch assembly, affording critical sensitivity to the bird's weight.

Abstract: An extendible table characterized, in one invention embodiment, by outwardly movable end sections which conceal a center or extension section at a non-extended position and which reveal the center section when at an extended position, the middle section being rotatable to present an upper surface which is coplanar with the upper surfaces of the end sections at the extended position. In another invention embodiment, the center section is vertically movable from the concealed position thereof, when the end sections are non-extended, to a position of use when the end sections are extended.

Abstract: A latching structure characterized as a member having a portion slideable along an edge of a hinged cabinet door, where, when in a fully operative or latching position, another portion thereof engages the frame surrounding the door opening, whereby the door remains in a closed position during transporting and installation to prevent unwanted opening and damage.

Abstract: An arrangement for achieving effective steering and control of any type of vehicle employing hydraulic follow-up, as, for example, the rudder of a vessel, where the components thereof are so related that the rudder will automatically follow the true position of the steering mechanism.

Abstract: An outdoor cooking grill designed specifically for use on porches, apartment balconies or confined outdoor living areas, where people, combustible clothing and furnishings are in close and hazardous proximity to the grill. Means are provided to assure optimum safety during the cooking operation.

Abstract: An automatic material feeding arrangement having particular adaptability for moving, at a programmed rate, successive layers of vertically stacked lumber for further processing by selective indexing, including, in one example, hydraulic operative ejecting mechanisms cooperating with linkage systems.