Abstract: A portable lightweight drill assembly has a cutter mounted against a sheet of flat glass through which a hole is to be drilled; in an alternate embodiment, the drill shaft extends through a hole in the glass and has cutters mounted on both sides of the glass; in each case, the cutters are biased against the glass by a fluid pressure actuated bellows type servo constructed to exert a constant cutting force against the glass surface by means of a self-regulating action of the fluid pressure force.

Abstract: A kit for repairing a hole or providing a more substantial mounting for an anchor device, as in a panel of a hollow construction, such as room partition or a hollow door, includes a thin sheet of perforated material which is cut to form a plate slightly exceeding the size of the hole after it has been squared-up. A suitable adhesive, such as two sided adhesive tape, is applied to a face of the perforate plate along substantially the entire periphery of the plate. An operatively rigid tool having resilient legs with feet at adjacent ends, has its legs slight spread apart and the feet inserted through spaced apart ones of the perforations until the legs seat in these perforations and the tool is generally perpendicular to the plate. A rod is then inserted through a perforation preferably aligned with and equally spaced from the perforations receiving the legs.

Abstract: A plastic repair procedure employing a heat cured patching paste and the application of a controlled quantity of heat avoids the damage frequently caused by excessive application of heat during the requisite heating step. A special tool herein described employs a new heating principle for repairs of this type.

Abstract: A kit for repairing a worn bowling lane following resurfacing of the lane to a predetermined minimum thickness. The kit includes a series of laminated wood panels fabricated from boards having a common width and thickness and used to rebuild a bowling lane when applied to the lane in abutting end-to-end positions. Wooden bolts are adapted to be received in apertures formed about the periphery of each panel to assure adhesive bonding between each panel and the bowling lane without the use of metal fasteners. The method involves the fabrication of the panels to match bowling lane requirements, the arrangement of the panels along the upper surface of the bowling lane, and the bonding of the panels to the lane by use of an adhesive. Temporary pressure is applied between the panels and the bowling lane by use of metal bolts. Permanent bonding is achieved by later substitution of wooden bolts, which are secured by adhesives.

Abstract: A process for refinishing the surface of a body of a thermoplastic resin by subjecting the surface to treatment with a solvent. The surface is cooled, together with at least the material underlying the surface, to a temperature below the temperature at which the solvent can readily dissolve the resin. The surface of the body is then contacted with a solvent for a time sufficient to dissolve the surface but not to warm appreciably the inner layer of the body. The process avoids distortion in the refinished surface.

Abstract: This invention relates to a method for repairing plastic materials, and more specifically, automobile dashboards and the like. The method enables one to provide the repaired item with a texturized finish such that cracks, cuts, and other imperfections in the surface are completely covered in such a manner that the repaired item appears to take on the appearance of being new. The method comprises the steps of filling in cracks and other indentations with a hardenable filler such that a smooth surface is formed. A base coat of an acrylic resin is then applied over the surface followed by a texturized acrylic resin coating which forms a texturized finish on the surface. Depending on the original color of the item to be repaired, a thin colored coating may be applied over the texturized finish so as to form a continuous colored texturized finish over the entire surface of the now-repaired item completely masking the cracks and other imperfections in the surface thereof.

Abstract: A preformed, pre-cured, reenforced plastisol patch is provided for repairing damaged vinyl sheets. The damaged portion of a sheet is removed and a patch, which has an area greater than that of the removed portion of the sheet so as to overlap the undamaged material surrounding the opening left by the removed portion, is placed over the opening and is fused to the surrounding undamaged sheet.

Abstract: Sheet material is moved along its length from a supply to a take-up spool and the material is inspected as it is moved. A garment pattern image is projected on and is moved with the material. The operator determines where the material is to be cut either from the length accumulated on the take-up spool or from the image projected on the material, and if a flaw in the material is detected, the operator determines if the flaw should be removed by identifying the pattern part in the garment from the image projected on the material where the flaw will appear. If the flaw is to be removed, the operator cuts the flaw out and splices the cut ends of material together at splice marks in the image projected on the material. The spools loaded with sheet material with this procedure are loaded in a creel, and the ends of the sheets of material from the spools in the creel are aligned in a vertically stacked arrangement and moved to a cutting apparatus where the garment pattern is cut in the stacked sheets of material.

Abstract: A manually operated carpet repair tool cuts a circular plug in a carpet to remove a damaged area. The carpet repair tool has two cutting blades which are equally spaced circumferentially on the lower periphery of the tool for balanced tracking of the blades in the cut.Circumferential grooves on a centering pin grip the carpet plug as the cut is being made so that the operator can test to see if the plug is free during the cutting operation and still continue the cut in exactly the same location as before if the cut has not been completed.A carpet repair disk is positioned beneath the opening cut in the carpet to retain a matching carpet repair patch in the opening cut by the carpet repair tool. The carpet repair disk includes a strand reinforced paper backing with an adhesive on the upper surface.The carpet repair disk is of larger diameter than the diameter of the opening cut in the carpet.

Abstract: Apparatus for repairing portions of damaged material such as clothing fabric is described. A piece of mending cloth identical to the damaged material is placed over the damaged area of a fabric to be repaired, aligned and further placed upon a flat cutting die of metal having several different sized round holes therein. The proper hole is selected, the top edge about the parimeter acting as the cutting die. A cooperating punch assembly containing a cylindrical holder which can contain one metal sphere or two such spheres. If the punch assembly contains two such spheres, one may be swiveled or turned end for end so as to cut with the desired sphere. The spherical ball partically protrudes from the one end of a holder through a hole about which surrounds a shoulder area for cooperating with the die plate. The spherical ball is held loosely within the holder by retaining means opposite to the shoulder region.

Abstract: An improved process for mending clothes with a unique means for applying a thermoplastic synthetic resin to form a strong border between a basic cloth and a mending cloth. The resin is applied to both the mending cloth and the basic cloth before fastening them together. The cloths are then temporarily fastened together. The mending cloth is placed over the torn portion of the basic cloth and a hole is stamped through the two cloths. Additional resin is applied to the circumference of the hole and the piece of mending cloth which has just been cut out is manually pressed into the hole. A reinforcing cloth is placed on the back of the mended area and an iron is used to heat the resin and cause the various pieces of cloth to adhere. The mended area is difficult to distinguish and resists tearing or fraying.

Abstract: A repair tool for performing quick, inexpensive and almost invisible repairs on fabrics which have been subjected to local damage. The tool comprises a base plate having core pins and ring pins projecting upwardly therefrom. An annular holding ring overfits the base plate and sandwiches the fabric to be repaired therebetween. A rotary knob including a circular razor turns within the holding ring central opening to cut a perfect circular hole in the fabric to remove the damaged area. The tool is utilized to cut a similar circular patch from an undamaged portion of the fabric. The patch is then applied to the circular hole in the damaged fabric and is secured thereto by rearwardly positioned adhesive faced material to provide an almost invisible repair.

Abstract: Base vinyl material is readied for repair by preparing the edges of a hole to get a clean sharp periphery, and by cleaning the base material. A substantially non-heat shrinkable, precured, vinyl-welding compound having high tensile strength and low fusion point is laid in the hole so that it abuts against the periphery of the hole and then is fused to the base material by heat. The upper exposed surface of the repair is smoothed to present a continuous, uninterrupted surface with the base material. A hard and flexible graining tool is obtained from an impression of the base material. The graining tool is applied to the upper surface of the welding compound after it and the surrounding base material have been heated sufficiently to receive a grain impression.

Abstract: The edge of a hole in base vinyl material is cut clean and sharp and the material bounding the hole cleaned. A liquid vinyl compound is layered into the hole with each layer cured after it is applied. Only the last layer is pigmented to match the color of the base material. The exposed surface of the final layer is blended with the base material to present a continuous, uninterrupted surface. A hard, flexible and clear graining tool obtained from an impression of the base material is applied to the upper surface of the welding compound and indexed with the grained pattern of the vinyl base material after the cured welding compound and surrounding base material have been heated sufficiently to receive the grain impression.

Abstract: Immersion of semiconductor devices, particularly diodes, having a defective tin plating thereon in a solution of 5 - 20 percent by weight trichloroacetic acid, 0.1 to 5 percent by weight of a compound selected from the group consisting of cationic, anionic, and nonionic surfactants and the balance water effectively removes the tin therefrom. The process is effective at room temperature but preferably is performed at approximately 100.degree. C.

Abstract: A method for repairing a roof comprising the steps of: spreading a porous conformable membrane over the existing roofing materials, moistening the membrane to cause it to conform to the roofing surface, tacking the membrane through the existing roofing materials and into the roofing substrate, applying a sealing adhesive to the membrane, and covering the membrane with a waterproof roof coating.

Abstract: The invention provides for repairing a crack in a pane of plate glass caused by the impact of a hard object without removing the glass from its location by cutting out a section from the glass surrounding the crack and replacing it with a disc of a similar sheet of glass.