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Six-year-old Robert W. Patch granted a patent for a "toy truck".
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| Number | Title | Issue Date |
| 4325272 | Method of making saw blades A method of manufacturing a circular saw blade comprises advancing through a press tool having multiple blanking stations, a blank, in strip form of thickness required for the blades and of width slightly greater than the diameter required for the blades,... | 04/20/1982 |
| 4319502 | Portable saw chain sharpener A portable saw chain sharpener which permits sharpening of the cutter elements of the saw chain without removal of the saw chain from the saw bar. A frame of the sharpener may be attached to the bar of a chain saw by means of a clamp which is adjustable t... | 03/16/1982 |
| 4301612 | Lobster trap A trap includes an outer shell having an entrance at one end and a removable end plate at the other end. The outer shell has a number of holes for the passage of water inside the outer shell. An inner shell that also has water passage holes and that prefe... | 11/24/1981 |
| 4296572 | Dust removing attachment device for automatic air files A dust removing attachment device for pneumatically driven straight-line power files wherein a continuous current of air is over the filing surface to entrain abraded particles by vacuum for capture in a dust bag is described. A portion of the pressurized... | 10/27/1981 |
| 4282615 | Carpenter's surface protecting tool A device for protecting a surface into which fasteners are driven. The device includes a shield portion and a handle substantially parallel to the shield. An opening is provided in the shield portion large enough to accommodate the head of a nail, and an ... | 08/11/1981 |
| 4281444 | Wire stripper A device and method are described for stripping the outer jacket from the inner core of an electrical cable or the like. The device comprises means for generating a high-pressure jet of fluid, means for directing the jet along the length of the electric c... | 08/04/1981 |
| 4277987 | Chain saw sharpening apparatus A chain saw sharpening apparatus is disclosed including a support member adapted in operation to locate about a chain saw in a predetermined relationship thereto and supporting two guide roller assemblies each including a pair of guide rollers disposed at... | 07/14/1981 |
| 4276788 | Process for the manufacture of a drill head provided with hard, wear-resistant elements The method of manufacturing such drill head by embedding the shank portions of hard, wear-resistant cutting elements in a mold containing metal powder, cold isostatically compacting the powder and shank portions to form the core part of the drill head, an... | 07/07/1981 |
| 4274219 | Automatic power fishing reel A trolling tackle device having a reversible power drive reel for raising and lowering a metal line and a heavy sinker in deep water trolling. A fishing line, bait and hooks are releasably attached adjacent the sinker and are thus to be lowered to the des... | 06/23/1981 |
| 4274309 | Method of manufacture of certain hand wrenches and the like A method of manufacturing hand wrenches having a relatively long handle attached at one end to a yoke pivotally carrying the housing of a ratcheting socket drive mechanism fabricates the yoke, instead of casting or forging it, and employs a separate ferru... | 06/23/1981 |
| 4271729 | Wire stripping device A device for stripping insulation from the end of electrical wiring is disclosed and includes hand-held, elongated strip members that are pivotally movable to and from a wire stripping position, a tubular member extending between the grip members and guid... | 06/09/1981 |
| 4267751 | Saw chain depth-grinding apparatus Apparatus for grinding depth gauges in a saw chain. The chain is composed of plural cutter links, each having a depth gauge and a cutter blade. The apparatus includes a stationary grinding wheel and a platform on which a selected cutter link is mounted, f... | 05/19/1981 |
| 4266361 | Fishing-tackle to be used as a combined jig and spinner A fishing tackle element which serves the dual purpose of a jig and a spinner of a fishing-tackle apparatus. The element comprises a body having a tapered polygonal cross section and a spear-shaped end portion, with the spear wings having twists to impart... | 05/12/1981 |
| 4266448 | Axe sharpening device An axe sharpening device which comprises an adjustable two piece axe-clamping element having on the upper part thereof a file guide including a base oscillatably mounted on the upper part of the axe clamp with an upper part pivoted thereto and fitted with... | 05/12/1981 |
| 4265146 | Device for sharpening lawn mower blades A device for use with a portable electric drill having an abrasive wheel attached thereto for rotation thereby. The device includes a base for holding the drill in a substantially horizontal position and a clamp for holding a lawn mower blade. A rail is a... | 05/05/1981 |
| 4262558 | Apparatus for sharpening circular saw blades The present invention relates to an apparatus that is adapted to be attached adjacent to a conventional grinding machine for sharpening circular saw blades, especially the type having laterally off set teeth. The sharpening attachment of the present inven... | 04/21/1981 |
| 4258592 | Device for sharpening of scissors Device for sharpening of scissors, consisting of a disk-shaped body (1) provided with two lengthy openings (2,3) for the scissor blades (8). The openings are on one long side and on one short side limited by sharpening means (4,5) consisting of round pins... | 03/31/1981 |
| 4257197 | Hub for mounting a rotary tool A hub is disclosed for mounting the spindle of a rotary tool, particularly a grinding or polishing wheel for ophthalmic lenses. The hub comprises a cylindrical bore and a plurality of radial centering arms arranged around the bore with their free ends lyi... | 03/24/1981 |
| 4257287 | Beverage can opener An opener apparatus for beverage cans having an opener tab provided on the top wall includes an elongated tool having a hook portion at the forward end and a handle portion at the rearward end. The hook portion extends forwardly from the handle portion a ... | 03/24/1981 |
| 4255904 | Universal positioning support for grinder wheels An apparatus for universally supporting and positioning a rotating grinder wheel comprising a support base carrying a cage which rotates about a horizontal axis, and with a horizontally reciprocating frame mounted within the cage for rotation with the cag... | 03/17/1981 |
| 4255856 | Utility knife attachment An attachment for a utility knife is disclosed which allows the knife to be used in association with a measuring tape for cutting sheets of plasterboard and the like into uniform widths. In one embodiment, the attachment is in the form of a relatively thi... | 03/17/1981 |
| 4254673 | Saw mounted saw chain sharpener A mount is provided and includes structure for supporting a saw chain with a tooth thereof in predetermined position relative to the mount. A support is also provided and a rotary grinding wheel is journaled from the support. Parallelogram linkage structu... | 03/10/1981 |
| 4253352 | Tool for opening cans A tool for opening cans in the form of a sleeve sized to receive a lever fixed to a can and operable to bend a weakened portion of a can top into the can in a hinged swinging action, the tool having a mouth and longitudinally extending slit at one end siz... | 03/03/1981 |
| 4251955 | Hub assembly A hub assembly 30 for releasably mounting a circular grinding wheel 18 on a rotatable shaft 14 is disclosed. The assembly 30 includes a hub 36 having a radially extending face 42 to engage one major side surface of the grinding wheel. A central axially ex... | 02/24/1981 |
| 4250620 | Plastic scissors with metallic cutting inserts Safety scissors wherein the scissor members are composed of a metal member partially embedded in plastic in such a way that a part of the exposed metal serves as a cutting edge and the remaining exposed portion of the metal member bears the sliding fricti... | 02/17/1981 |
| 4249346 | Mobile rail grinding machine and method A mobile rail grinding machine comprises a machine frame mounted on the rails of a track for continuously moving in the direction of, and along, the track, a tool carrier frame vertically adjustably mounted on the machine frame, a rail grinding tool or a ... | 02/10/1981 |
| 4249307 | Hair clipper Disclosed herein is a hair clipper including a housing, a motor located in the housing and including a shaft having a drive member thereon, and a blade set connected to the housing. The blade set includes a lower blade connected to the housing, and a mova... | 02/10/1981 |
| 4249432 | Ruled scoring die A die having a scoring rule and an accommodating counter plate for use in paper or similar soft materials scoring operations in which alignment between the scoring rule and the score in the counter plate is accommodated by adjustably positioning a scored ... | 02/10/1981 |
| 4249748 | One-piece collet and process for making same A one-piece collet for use in machine tools, which collet comprises a rear portion which is cold worked to provide a bore of smaller diameter than the bore of the central portion of the collet, which reduced bore is threaded. The cold working of the rear ... | 02/10/1981 |
| 4246728 | Conduit end treating tool A tool for cleaning, deburring, burnishing, or otherwise treating an end of a tubular conduit comprises a rotatable body coupled to a carrier provided with an abrading substance. In one form the carrier may be accommodated within the conduit, whereas in a... | 01/27/1981 |
| 4246729 | Sharpener for self-sharpening feed chopping knives An improved sharpener for self-sharpening feed chopping knives used in cutting crops, forage, ensilage and the like. The sharpener may be lowered on top of the chopping knives so that the knives are continuously sharpened during the cutting operation. The... | 01/27/1981 |
| 4245437 | Rotary tool suction housing A vacuum housing for a rotary tool, particularly a hand-held tool such as a grinder, consists of a tubular casing concentrically positioned around the tool. The casing features a telescopic nose portion.... | 01/20/1981 |
| 4242780 | Hammer with chipping blade A chipping hammer for cleaning welds or deburring the oxidized metal about the cut from a cutting torch which comprises a handle and a head of unique configuration secured to an end of the handle. The head is secured at right angles to the axis of the han... | 01/06/1981 |
| 4242839 | High-speed power tool A high-speed power tool has a housing for an electromotor, and a tool casing mounted on the motor housing. A finishing plate is mounted on the tool casing for movement relative thereto. The motor drives a transmission which includes a crank member having ... | 01/06/1981 |
| 4242928 | Filing aid An elongated rigid tool having a handle at one end and a file contactor at the opposite end, having a total length greater than the width of the files to be manipulated and thickness permitting easy entry between tightly bunched files and manipulation of ... | 01/06/1981 |
| 4242841 | Apparatus for preparing and feeding an abrasive-containing suspension into the zone of action of work tools of polishing and finishing lathes An apparatus for preparing and feeding an abrasive-containing suspension into the zone of action of work tools of polishing and finishing lathes consisting of units series-connected by pipes and forming a closed circuit, comprising a unit for preparing a ... | 01/06/1981 |
| 4242926 | Device for sharpening saw chains A portable electric grinding tool for use in sharpening saw chains by means of a guide attachment attachably mounted at the sharpening end of the tool. The guide attachment consists of a detachable housing axially mounted on the tool having a separately d... | 01/06/1981 |
| 4242927 | Method of making a cutting tool An improved cutting tool has general utility, but is particularly adapted for use as a profile-style cutter, or as a form-relieved cutter. The cutting tool includes a body provided with a plurality of slots spaced circumferentially thereabout, a blade arr... | 01/06/1981 |
| 4241625 | Method of making a wire drawing die A metal casing is provided having flat, parallel front and back sides. A first cylindrical cavity having a bottom wall is formed in the front casing side. A cylindrical metal plug having top and bottom ends is secured by heat shrinking in the first casing... | 12/30/1980 |
| 4240230 | Throw-away adaptors for grinding wheels An improved throw-away, or single use, adaptor particularly useful with depressed center grinding wheels is described. The adaptor comprises a hollow mandrel having an internal threaded portion for attaching the adaptor to the shaft of a grinding machine.... | 12/23/1980 |
