Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 4117872 | Binding tool The invention relates to a binding tool for twisting the free ends of a binding wire, particularly for holding together metal reinforcing rods at their crossover points. The tool has a feed device for the binding wire, at least one pair of wire guides whi... | 10/03/1978 |
| 4117873 | Grooved-gear wire puller A grooved-gear wire puller comprising a pair of spur-type gears, one thereof being urged into tooth meshing relationship with the other gear of the pair which latter is positively driven, the teeth of said gear pair being grooved and the grooves thereof b... | 10/03/1978 |
| 4117874 | Portable article carrier A bag, e.g. a shopping bag, which is made of foldable material, is provided with a case, smaller than the bag, secured to the bag adjacent the mouth thereof. The case has two compartments, one of which serves for storage of the bag, when appropriately fol... | 10/03/1978 |
| 4117875 | Containers or carriers for goods A container or carrier for goods of the kind in which the goods are enclosed in a flexible or partly flexible sealed envelope or skin, the container being partially evacuated so that the flexible skin is forced down by atmospheric pressure to embrace and ... | 10/03/1978 |
| 4117876 | Awning for a mobile home An awning assembly includes a pair of collapsible arm assemblies supporting a roller having an awning disposed on the roller and extending to a wall. Each of the arm assemblies includes a telescoping main support arm having a first channel and a second ch... | 10/03/1978 |
| 4117877 | Method of manufacturing large-sized centrifugally cast composite roll and device for disposing lower side pouring sprue runner used in the method The disclosure relates to a method of manufacturing a large-sized centrifugally cast composit roll for use in a rolling mill capable of preventing deterioration of a connecting portion of a lower pouring sprue to a mold assembly of shaft portion lower mol... | 10/03/1978 |
| 4117878 | Unit for centrifugal casting of metals in split moulds Centrifugal casting apparatus comprising a rotatable sleeve supported at a fixed axial location and having a conically tapered internal surface, and a driving sleeve axially spaced with respect to the rotatable sleeve and having a conically tapered intern... | 10/03/1978 |
| 4117879 | Fixture for use in positioning the walls of an adjustable continuous-casting mold A fixture for use in positioning the walls of an adjustable continuous-casting mold. The fixture includes a frame which is inserted in the mold and keys for engaging keyways in the upper and lower edges of the side walls of the mold to center the fixture.... | 10/03/1978 |
| 4117880 | Tensionless metallic band of high thermal conductivity in a continuous casting machine An improvement in casting machines in which the molten metal solidifies inside the groove of a wheel, consisting of replacing the steel band generally used for covering the groove by a double band. A first band of copper or of an alloy which is a good con... | 10/03/1978 |
| 4117881 | System for and method of freezing biological tissue Blood cells, blood marrow, and other similar biological tissue is frozen while in a polyethylene bag placed in abutting relationship against opposed walls of a pair of heaters. The bag and tissue are cooled with refrigerating gas at a time programmed rate... | 10/03/1978 |
| 4117882 | Process and apparatus for heat exchange A process and apparatus is provided for storing thermal energy and subsequently releasing and extracting the stored thermal energy upon demand. At least one sealed container of salt hydrate is agitated continually and is positioned in heat exchange relati... | 10/03/1978 |
| 4117883 | Heat retriever A heat retriever having a shell provided with an inlet and an outlet for permitting a fluid to be circulated through the shell and heated by a retriever assembly including a vent pipe attachable to a flue pipe of a furnace. At least one, and preferably a ... | 10/03/1978 |
| 4117884 | Tubular heat exchanger and process for its manufacture A tubular heat-exchange unit and method for its manufacture comprising a plurality of heat-exchange tubes disposed in the vertical and horizontal direction in a stacked, spaced-apart relationship, the end portions of said tubes being adheringly embedded a... | 10/03/1978 |
| 4117885 | Slab header A heat exchange vessel has a plurality of tubes disposed therein. A tube sheet section in the vessel has a plurality of ports formed therein for receiving one end of each of said tubes, and at least one channel is formed in said first tube sheet section f... | 10/03/1978 |
| 4117886 | Oil shale retorting and off-gas purification Disclosed is a process for removing acidic impurities from off-gases generated in the retorting of oil shale comprising contacting a rubblized mass of oil shale which has been substantially depleted in hydrocarbonaceous materials with water, so as to extr... | 10/03/1978 |
| 4117887 | Sprinkler head flange assembly A fire protection sprinkler head arrangement comprises a flange attached to a bracket on the sprinkler body by boss and shoulder joints, e.g., bayonet joints. The flange serves as a brace preventing sagging of ceiling tile and unwanted retraction of the s... | 10/03/1978 |
| 4117888 | Novel field crop-thinning apparatus and method Relates to a method of accurately and rapidly thinning commercial plantings of field crops by a motor-driven apparatus wherein the r.p.m. of the motor is converted into timing pulses and utilized in maintaining a virtually uniform rate of travel, the puls... | 10/03/1978 |
| 4117889 | Apparatus for guiding row crop processing implements A row crop planter supports at least two vertical guide making blocks to form superficial trenches about four or five inches deep precisely midway between adjacent rows as they are planted. Tires with trench-riding central ridges on front wheels of a trac... | 10/03/1978 |
| 4117890 | Adjustable mounting for subterranean tool An adjustable mounting for a subterranean tool such as one for penetrating the ground and for laying cable or the like. The tool is mounted on a tractor which moves over the ground and forms a cut in the ground, and mounting members support the tool from ... | 10/03/1978 |
| 4117891 | Ground drive for grain drills A drive roller for driving feeding and metering mechanisms for seed and fertilizer of a grain drill which utilizes a drive roller riding against a pair of castering frame support wheels that are independent of the press wheel assemblies for the grain dril... | 10/03/1978 |
| 4117892 | Agricultural folding tool bar with rigid cross frame A folding tool bar system for agricultural use includes a cross frame rigidly secured to a main frame at a position forward of the support wheels and rear-folding wings. Ground implements are mounted on the wings and cross frame at equal lateral spacing a... | 10/03/1978 |
| 4117893 | Agricultural tool bar An agricultural tool bar includes a main frame adapted to be drawn by a traction vehicle. First and second tool support beams are pivotally mounted to the main frame. The tool support beams are adapted for movement between a use position and a road travel... | 10/03/1978 |
| 4117894 | Drill steel guide for a mine drilling machine A drill pot for rotating a drill steel is supported at the front end portion of a drill boom that extends forwardly from a self-propelled frame. The drill boom raises the drill pot in a straight line to advance the rotating drill steel into the mine roof ... | 10/03/1978 |
| 4117895 | Apparatus and method for enlarging underground arcuate bore holes A hole-opener and a hole-opener apparatus is provided for enlarging a pilot hole of the inverted arcuate type which bypasses an obstacle, the pilot hole having an entrance and terminal end, both ends usually being accessible to surface drilling equipment.... | 10/03/1978 |
| 4117896 | Soil sampler In abstract, a preferred embodiment of this invention is a soil sampler having a specially designed tip for easy penetration, a movable slot cleaner for cutting away surface soil that clings as the sample is taken, and depth markings for allowing accurate... | 10/03/1978 |
| 4117897 | Drill bit A drill bit comprising a body suspended in a well bore by an electrical cable which transmits power to a motor secured to the body and eccentric cam member rotated by the drive shaft of the motor and engagable with a plurality of reciprocal drill pins whe... | 10/03/1978 |
| 4117898 | Electronic tare system for electrical balance An electronic tare system used in an electrical balance of the type which generates an electrical signal representing a mass being weighed for application to a digital read out or other display is capable of bipolar operation over a range much greater tha... | 10/03/1978 |
| 4117899 | Hydraulic system for a skid-steer loader Provided in the hydraulic system for a skid-steer loader is a porting block controlling flow of hydraulic fluid to the driving portion of the hydraulic system. The porting block directs fluid flow to the hydrostatic pumps actuating hydrostatic drivng moto... | 10/03/1978 |
| 4117900 | Wind-powered car A passenger car deriving all or a part of its motive power from the wind through a system of one or more rigid vertical airfoils symmetrically aligned with respect to the fore-and-aft axis of the car. The relative wind velocity acting on the airfoil syste... | 10/03/1978 |
| 4117901 | Self-propelled articulated vehicle A self-propelled articulated vehicle having two vehicle modules pivotally attached at their ends. Steering of the vehicle is obtained through hydraulic steering components attached between the first and second vehicle modules and pivotally attached at a c... | 10/03/1978 |
| 4117902 | Engine cooling system for a skid-steer loader The cooling system of a skid-steer loader provides a high mount radiator and employs negative pressure to cool the engine. Circulating air is drawn into the engine compartment at the rear thereof, is carried over the engine and is blown out through the ra... | 10/03/1978 |
| 4117903 | Vehicle speed control system To decrease the number of switches and their connections to a speed control system, only two manually operated switches are provided to, respectively, allow for "engage", "disable" and "resume" operations, the system further including a bistable circuit w... | 10/03/1978 |
| 4117904 | Vehicle speed control system A diaphragm assembly is linked to an engine throttle valve to control vehicle speed in accordance with applied fluid pressure. A speed sensor angularly positions a shaft in accordance with vehicle speed. Fluid pressure is modulated in accordance with the ... | 10/03/1978 |
| 4117905 | Steering system for articulated vehicles A steering system for articulated vehicles having two or more pivotally connected vehicle modules. The invention provides for such a vehicle a dual hydraulic power steering system cooperating with a plurality of telescoping hydraulic cylinders to initiate... | 10/03/1978 |
| 4117906 | Linear travel device for self-propelled articulated vehicle A self-propelled articulated vehicle having two vehicle modules pivotally attached at their ends. Steering of the vehicle is obtained through hydraulic steering components attached between the first and second vehicle modules and pivotally attached at a c... | 10/03/1978 |
| 4117907 | Device for aspiration of lubricating oil from the supply of a combustion engine A device for aspiration of lubricating oil from the supply of a combustion engine that may at times be moved out of a normal position into a different position, in particular an upside-down position, by means of a lubricant pump delivering the oil to the ... | 10/03/1978 |
| 4117908 | Elevator having rope guide means An elevator including a rope vibration suppressing device provided on the floor of a machinery room, on the top of a elevator cage or on the top portion of balancing weight means to prevent lateral vibration of ropes which may otherwise be produced when a... | 10/03/1978 |
| 4117909 | Wheel torque feedback controlled front brake A torque controlled brake of the disc type has a caliper which is free to rotate about the axis of the wheel shaft. The caliper contains a rotatably mounted lever having disc pads which press upon the disc to provide the frictional braking force. The pads... | 10/03/1978 |
| 4117910 | Disc brake and mounting therefor A disc brake includes a frame which carries a pair of friction elements on opposite sides of a rotor. A support fixedly secured to an axle housing cooperates with the frame to permit sliding axial movement and pivoting of the frame relative to the support... | 10/03/1978 |
| 4117911 | Torque bars for sliding caliper disc brake Disc brake sliding caliper retention is provided by a pair of torque bars fixedly mounted to a non-rotating member adjacent a rotating disc member. The torque bar pair constrains at least one sliding caliper from rotation with the disc when the caliper cl... | 10/03/1978 |
