A panel clip for holding the side paneling of a rail car in place having a central channel-shaped portion the side walls of which at their extremities are bent laterally outwardly in opposite directions to provide coplanar flange portions. An integral tab is bent up from each flange portion at a right angle to the plane thereof.

An insulating panel which comprises at least one layer of polystyrene covered on at least one side by a layer of cellulose. Preferably, the cellulose is intermixed with an adhesive and sprayed onto the polystyrene and the adhesive, and upon curing, bonds the cellulose together and to the polystyrene layer; or, alternatively, the cellulose material is molded into a pad or panel which is subsequently bonded to the polystyrene layer. The exposed side of the cellulose layer is in turn covered with a...

A solar panel is shown for use as a double panel window structure. It has an outer frame formed by an H-shaped extrusion that has one of its outermost legs shortened, and a pair of generally parallel legs or flanges that are inwardly directed of the frame. The outer surface of these flanges are furnished with a dual pressure-sensitive adhesive tape having a width between 1/4 inch and 1 inch. A pane of transparent material is sealed around its periphery into engagement with the adhesive tape for ...

A method and apparatus for cutting a hole with at most one line of symmetry in, for example, a sheet metal panel is disclosed wherein a plurality of holes are first drilled in the panel and thereafter a punch is positioned on one side of the panel and a die on the other side which are threadedly coupled together by a plurality of bolts passing through the panel holes so that tightening one or more of the bolts will draw the punch and die toward one another forming the desired hole. Typically, a ...

An improved panel or wallboard fastener for securing a panel to a framing member. The wallboard fastener comprises a substantially planar base having a single impaling flange secured to it at a midpoint. The impaling flange includes a first leg which extends substantially perpendicularly outwardly from the base and a second leg secured to the first leg and which lies in a plane substantially parallel to but spaced from the base. The second leg of the impaling flange forms a point which is insert...

A revetment panel for installation along embankments and other earthen structures, including structures partially or fully covered by water, which utilizes a fabric web having a plurality of compartments separated by selvage. The web is formed of two fabric layers, which are woven separately on the same loom to form the compartments, and interwoven to form the selvage. The fabric layers are separately woven to form slots in the selvage which allow cables to pass through the web, and which allow ...

A display panel, connectors and display panel system are disclosed in which the individual panels are provided with peripheral slots or channels which have resilient or frictional walls which grasp connectors and serve to join two adjacent panels. The connectors are provided with slot penetrating ends and are dimensioned to be gripped within the slots.

A concealed connector for detachably coupling two panels together comprises a keeper entirely recessed within an edge of one panel and a rotatable latch outwardly projecting from a surface of the other panel. The latch includes a cam portion in the form of a partial thread which is inserted within the keeper recess for engagement with a flanged lip on the keeper. A stylus key is passed through a narrow access slot in communication with the recess and is selectively received within circumferentia...

Disclosed is a generally rectangular prefabricated concrete panel having a pair of edge defining members along each lateral edge with a maximum distance at the upper and lower extents of the panel, but with a concrete body portion having substantially parallel lateral edges with a width less than the minimum distance between the edge defining members.

A building panel having inner and outer faces outlined by opposite ends and an upper and lower edges has opposite ends adapted to closely face the end of an adjacent panel in the same course. The outer face of the panel includes a lower segment of substantially greater surface area adapted for exposure and an upper portion of relatively smaller surface area adapted to underlie a lower portion of one or more panels in a next higher course laid in overlapping relation therewith. One of the ends of...