Abstract: Transparencies for overhead projection are formed in which the information to be displayed is in the form of transparent lines, or other geometric patterns, on an opaque background. The transparent lines are formed on an opaque layer of a recording material formed from a clear or colored transparency on which the opaque layer is firmly adhered. The opaque layer is formed from finely divided organic styrene resin pigment uniformly distributed in a film-forming binder resin. The writing liquid is formed from a solvent for the organic styrene resin pigment. When the writing liquid is applied to the opaque layer using a suitable writing instrument, such as a pen, the opaque layer immediately becomes transparent where it is contacted with the solvent. The potential toxicity of the solvent (or solvent vapors) is eliminated and writing speeds may be increased by mixing a chlorofluoroalkane of from 1 to 3 carbon atoms with the solvent.

Abstract: A portable desk top tray for organizing and arranging desk implements such as a tape dispenser, stapler, calendar and the like, includes a top surface supported above a desk top by at least a front wall. The top surface has several depressions. Each depression is adapted to receive a respective desk implement and is of a size and shape to laterally confine the respective implement against substantial horizontal movement. Several elongated sockets open through the front wall and extend rearwardly therefrom at positions laterally spaced from the depressions. The top surface may also be provided with an upright wall structure shaped to conform to another respective one of the desk implements for receiving the same. One of the sockets may be positioned below and laterally between the upright wall structure.

Abstract: A color marker container has a wall with holes separated by twice the marker diameter, into which the markers may be inserted, the wall around each hole being colored the same as one of the markers, the names of the colors being imprinted on the wall near the openings.

Abstract: An upwardly open box is provided with an inset cover of substantial thickness perforated by a plurality of orifices adapted in size and spacing to the reception and retention of artist's crayons. The peripheral wall of the box, generally rectangular in plan, extends above the upper surface of the inset cover and protects the protruding ends of the crayons against breakage. The vertical location of the cover within the box is variable to accommodate to the changing length of the crayons with wear, by manually adjustable means including projections and recesses for removably securing the inset cover or holder plate in selected vertical positions relative to the box.

Abstract: A container for drills comprises spaced side members interconnected by means of a base and a top and bottom rack, each rack having a plurality of holes, the holes in the top rack being aligned over the holes in the bottom rack, the racks extending between the side members, a swing-away cover is connected to the top of one side piece by means of a pivot screw and extends across the container to the top of the other side piece where it is fastened by means of a removable fastener such that when unfastened the cover can be swung-away and the drills removed from the container.

Abstract: A combination two-compartment clip board for containing report forms and reports and providing a writing surface for preparing reports is disclosed.