Abstract: A mounting for a heavy signboard which must be held in each of a generally vertical display position and a generally horizontal travel position, including support means which are laterally spaced and which are rotatably connected to the signboard at a position in which the signboard is substantially balanced when in positions other than vertical, and a control rod supportingly connected to the signboard by which the signboard can be manually controlled from a location spaced from the signboard for controlled movement into and between those held positions, and support means latchingly and releasably retainingly engageable with the control rod when the signboard is in each of those positions for holding those positions, the control rod thus serving as both a manually controlled control handle for the signboard and a latch member for releasably holding the signboard in both its vertical and horizontal positions.

Abstract: A display apparatus for use with a vehicle-mounted display board includes a flat plate made up of a plurality of plate pieces which surround and offset the display board during exhibition. For transport, the plate pieces are disposed around members associated with the display apparatus, to protect these members and the board from damage.

Abstract: A display panel structure includes a pair of longitudinally spaced vertically adjustable posts provided at their bottoms with mounting clamps and at their tops with transverse support rods terminating in short upright legs which engage apertures in coupling lugs projecting inwardly from rectangularly arranged corner members and tie rods extend between and separably engage diagonally spaced corner members. Fascia panels extend between each pair of corner members and have in their rear faces keyhole slots which releasably engage enlarged head coupling elements projecting outwardly from the corner members. A bracket is vertically adjustably mounted on each post and carries for transverse adjustment an arm terminating in a coupling element carrying plate and a fascia panel extends between the plates and has keyhole slots engaging the coupling elements.

Abstract: A display having mechanically changeable characters and a support for the display are disclosed. The display comprises an array of mechanical flip-flop elements which can each be rotated between two orientations exposing one of two visually different sides. The flip-flop elements are bars secured resiliently by springs to a frame in such a manner that each flip-flop element can be manually pulled away from the frame, rotated to change its orientation, and released to snap back against the frame. The flip-flop elements are arranged in groups of seven, each group having its seven flip-flop elements arranged into two adjacent quadrilaterals of equal size, one flip-flop element being common to both quadrilaterals. Channels are provided on the rear side of the frame to receive the springs. Various lengths for the flip-flop elements are disclosed. The support maintains the display in an elevated position and draws up the display by means of a retractable cable. A securement device holds the display up.

Abstract: Disclosed herein is an indicator system and linkage for a fireplace damper whereby the open and closed modes of a fireplace damper are readily indicated without the necessity of inspecting the damper itself. The apparatus includes a series of links which alternatively expose a pair of indicators which reveal the mode that the damper door is currently in.

Abstract: A display device is mounted to bridge at least one bowling lane, with the support braces of a support for a frame of a panel masking unit being affixed on either side of the lane or lanes. In one embodiment, at least two panel masking units are mounted to bridge adjacent lanes, with one support brace serving as a common support for the two adjacent panel masking units. The frames are mounted on the supports for pivotal movement between a vertical and a horizontal position, with the center of gravity for each frame being close to, above and forward of the pivot mounting so as to provide easy pivoting with two stable positions, against the vertical or horizontal stops. The panels are removable, reversible and easily changed to change the design or message intended to be conveyed by the display device.

Abstract: A generally rectangular framework is constructed to hold a plurality of individual advertizing panels. The bottom and two sides of the frame are formed from channel members connected at their corners and designed to snugly but freely receive the plurality of panels. A pair of panel support members which are formed as parallel spaced walls extend between the tops of the side channel members and form the top of the framework. Each wall is connected to the ends of the legs of an angle iron member, the apexes of which are facing and spaced horizontally by approximately the width of the panels. The apexes are spaced vertically by an amount to allow the panels to be slid between them at an angular orientation so that the panels can be lifted in an angled position, pulled between the angle iron members, and rotated to a vertical position to be dropped between the sides of the channel member on the bottom of the framework.

Abstract: A retractable roof top sign for automotive vehicles including a generally rectangular low profile frame for attachment to the roof of the vehicle and a sign structure transversely spanning the frame in pivotal attachment at a lower end between a pair of longitudinal side rails of the frame, a small gear motor being provided in driving connection to the sign in a manner so as to permit the sign to be selectively moved between a retracted position within the confines of the frame and a vertically erect position by operation of appropriate electric control switches mounted in the operator's compartment of the vehicle. For use in police cruisers or the like, an attention getting light flasher bar extends across the top width of the sign, and front an rear lights mounted within the confines of the frame are directed respectively on front and back messages displayed on the sign.

Abstract: A sign opening, closing and locking device for use on a conventional rectangular, box-like sign having one or more advertising panels hingably attached to the frame. The device comprises gear racks and pinion, a raceway for containing the racks, linkage from the racks to the front panel, and a crank for rotating the pinion. In operation the crank is mated with a shaft to rotate the pinion. Rotation of the crank and the engaged pinion cause linear movement of the racks and the attached linkage resulting in an initial disengagement of the linkage from a stationary lock pin. Further rotation results in an outward movement of the front panel as it is rotated on its hinges. Opposite rotation of the pinion results in closure and locking of the sign.

Abstract: A truck bumper attachment for use with wideload signs, having spring urged telescoping C-clamps for fastening onto the truck bumper and also telescoping supports for the sign so as to be useful with a plurality of sign sizes.