Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 4048164 | N'-substituted derivatives of 4'-(N-piperazinylmethyl)spiro dibenzocycloheptadi- (or tri-) ene-5,2'-dioxolane(1',3') Compounds of the formula ##STR1## wherein Z is --CH2 CH2 -- or --CH=CH--, and R is methyl, ethoxycarbonylmethyl or ##STR2## wherein ##STR3## is methylamino, n-propylamino, isopropylamino, dimethylamino, di(n-... | 09/13/1977 |
| 4045265 | Combined application process of thermal insulation and built-up roofing or waterproofing A novel combined application process of thermal insulation and built-up roofing or waterproofing is provided. In this application process, a foamed thermo-plastic thermal insulating material is bonded with a membrane having a tacky compound layer on one s... | 08/30/1977 |
| 4033212 | Method of and device for severing a veneer sheet A method of severing a veneer sheet comprising feeding a veneer sheet, sensing an irregularity or a predetermined length of said veneer sheet and actuating, in accordance with the sensing of the irregularity or the predetermined length of the veneer sheet... | 07/05/1977 |
| 4033517 | Device for granulating thin-walled plastic wastes into plastic granulated material A device for granulating thin-walled plastic material into plastic granulated material. The device is composed of a rotating tool which is arranged closely above the bottom of a container. The tool produces frictional heat when moved relative to the mater... | 07/05/1977 |
| 4032713 | Recording tape control arrangement for telephone answering apparatus A circuit arrangement for a telephone answering apparatus having an announcement text recorded on a magnetic tape which is moved from a starting position in a forward direction under the action of a driving motor and after a predetermined lapse of time fr... | 06/28/1977 |
| 4031159 | Method for preparation of polyolefin oil A method of preparing a polyolefin oil in the present invention comprises polymerizing an olefin having 6 or more carbon atoms in the presence of a catalyst mixture consisting of a polyester of polycarboxylic acid and an aluminum halide. The thus prepared... | 06/21/1977 |
| 4031158 | Method for preparation of polyolefin oil A method of preparing a polyolefin oil in the present invention comprises polymerizing an olefin having 6 or more carbon atoms in the presence of a mixture of a polyhydric alcohol derivative and an aluminum halide, said derivative being obtained by replac... | 06/21/1977 |
| 4031089 | Furo (2,3d) pyrimidines Compounds of the formula ##STR1## wherein R is alkyl of 1-4 carbon atoms, phenyl, or phenyl substituted by one or more halogen or trifluoromethyl, and Z is ##STR2## wherein R1 is hydrogen, alkyl of 1-4C, 2,2-dimethyldioxolan-4-yl ... | 06/21/1977 |
| 4031480 | Circuit arrangement for the ungrounded transmission of signals through testing points in communication systems A circuit arrangement for the ungrounded transmission of signals through testing points in communication systems with the aid of high-frequency oscillations. The high-frequency oscillations are controlled on the one side of the testing point and are recti... | 06/21/1977 |
| 4029564 | High speed plating device for rectangular sheets A plating device suitable for performing high speed, gold-, nickel-, rhodium- platings on a rectangular sheet such as a printed circuit board is provided with a mechanical masking means and a plating solution jetting means.... | 06/14/1977 |
| 4029555 | High-speed continuous plating method and apparatus therefor A high-speed continuous plating method and apparatus wherein a plating solution is sprayed from an anode and spray nozzle against a plating solution spraying opening formed in an object feeding guide tunnel of the shape corresponding to the cross-sectiona... | 06/14/1977 |
| 4029402 | Optical aid for use in the selection of spectacle frames An optical aid for use in the selection of spectacle frames is in the form of a trial lens mount having a lens holder with a plurality of resilient arms extending outwardly therefrom which carry at their extremities members which engage a lens-retaining g... | 06/14/1977 |
| 4029328 | Auxiliary transporting device A device for moving objects that are normally temporarily used, such objects being, for example, furniture or the like used on beaches. The device is composed of an elongated shaft having a pair of wheels mounted on opposite ends thereof. A pair of blocks... | 06/14/1977 |
| 4029218 | Two-storied parking apparatus for automobiles A two-storied parking apparatus for automobiles, including a pair of arcuate guide rails having lower ends fixed on the ground and upper ends fixed to the associating upper end portions of a pair of vertical frames which are fixed on the ground at an appr... | 06/14/1977 |
| 4029741 | Recovery of antimony sulfides A process is disclosed for separating antimony sulfides from solutions comprising anitmony sulfides and arsenic sulfides by subjecting the solution to partial oxidation within prescribed pH limits in order to oxidize and precipitate a substantial portion ... | 06/14/1977 |
| 4029789 | 1-[2'-(-Furoyl or -thienoyl)eth-1'-yl]-2-(4"-cinnamyl piperazin-1"-yl methyl)benzimidazoles and method of using same Compounds of the formula ##STR1## in which Ar is -furyl or -thienyl and pharmacologically acceptable salts thereof are provided as novel therapeutic agents which have inter alia utility in treating asthma, respiratory deficiency, v... | 06/14/1977 |
| 4029650 | Novel derivatives of N-(3,4,5-trimethoxy cinnamoyl)piperazine and the process for preparing them Compounds having the formula ##STR1## in which R1 is alkyl having no more than 4 carbon atoms and R2 is dimethoxyphenylethyl or ##STR2## is piperidino, heptamethyleneimino or 1,2,3,4-tetrahydroisoquinolino. The compoun... | 06/14/1977 |
| 4029608 | Granular or powdery detergent composition A granular or powdery detergent composition comprising a surface active agent having a tendency to cake, and containing as an anti-caking agent from 0.2 to 20 % by weight of a polyoxyethylene alkyl or alkenyl ether which is solid at room temperature and h... | 06/14/1977 |
| 4029606 | Non-liquid detergent composition A non-liquid detergent composition prepared by shaping a detergent composition comprising an acyl-poly-hydroxy carboxylate having the formula ##STR1## (wherein R represents a saturated or unsaturated straight-chain or branched-chain hydrocarbon group... | 06/14/1977 |
| 4029591 | Liquid detersive bleaching composition A liquid detersive bleaching composition which comprises 3 to 10 wt.% of sodium hypochlorite (in terms of the amount of available chlorine), 0.5 to 3 wt.% of caustic alkali, 0.3 to 7 wt.% of polyoxyethylene alkylphenyl ether sulfate (a) having the formula... | 06/14/1977 |
| 4029582 | Poly(arylether-sulfone) semipermeable membrane comprising substituted halomethyl and/or quaternary nitrogen groups A semipermeable polymeric membrane which essentially consists of modified poly (arylether-sulfone) having halomethyl groups and/or quaternized nitrogen atom-bearing groups. The membrane can be prepared by casting the polymer solution in a selected solvent... | 06/14/1977 |
| 4027553 | Angle gear drive arrangement An angle gear drive arrangement for a steerable propeller on a watercraft or other type of vehicle in which a driven shaft is supported in a gear housing and is driven by a pair of bevel gears. The driven bevel gear of the pair of bevel gears is mounted o... | 06/07/1977 |
| 4028280 | Non-phosphate or reduced phosphate detergent compositions containing mixtures of alkyl ether sulfates A detergent composition comprising as all or a part of the active detergent component (A) a mixture of up to 70% by weight of unbranched-alkyl ether sulfate, or mixtures thereof, having the formula (I): wherein R1 is unbranched alkyl (CH3... | 06/07/1977 |
| 4028164 | Process and apparatus for the continuous obtainment by displacement of cylindrical or prismatic hollow bodies produced with fibre-reinforced synthetic resins An improved process, and the apparatus for carrying out the process, of forming an elongated hollow body from fibre-reinforced synthetic resins. A plurality of resin impregnated support fibres are positioned over and extend longitudinally along a rotating... | 06/07/1977 |
| 4027684 | Permanent-wave or water-wave curler A permanent-wave or water-wave curler having an elongated cylindrical curler body with at least one holding body arranged at one end coaxially of the curler body axis. The holding body is greater in diameter than the curler body and has two axially spaced... | 06/07/1977 |
| 4028000 | Blade connection for helicopter rotor blades Resilient drive means for a helicopter rotor blade. The rotor blade is pivotally supported on a stub shaft which is in turn supported on the rotor hub. First means are fixed to the rotor blade and second means fixed to the stub shaft with resilient and ad... | 06/07/1977 |
| 4028283 | Granular or powdery detergent composition A granular or powdery detergent composition comprising (I) as an active detergent component a surface active agent having a tendency to cake, and (II) as an anti-caking agent, from 0.2 to 20% by weight, based on the total weight of the detergent compositi... | 06/07/1977 |
| 4028282 | Method of manufacturing granular detergents The present invention relates to a method of manufacturing granular detergents having good biodegradability, mildness to the skin, an appropriate breaking strength of the granules, a desired bulk density and a satisfactory free-flowability, by heating a d... | 06/07/1977 |
| 4027236 | Voltage and continuity checker A portable test instrument for testing electrical continuity, and diode polarity, AC and DC voltage amplitudes and DC voltage polarity. An electronic switch device has main electrodes connected in an indicating circuit with an electrical supply, a light-e... | 05/31/1977 |
| 4026720 | Coating composition for acrylics A coating composition comprises (1) a partially hydrolyzed siloxane compound, (2) one or more of alkali metal and zinc salts of naphthenic acid, (3) acetic acid, and (4) other organic solvents. This composition contains these components in appropriate pro... | 05/31/1977 |
| 4026533 | Shock absorber with conical control elements An adjustable energy absorber including a housing having a ram slidably extending therefrom. A first control sleeve divides the housing into a pair of fluid chambers, which sleeve has an axially extending row of openings to provide communication between t... | 05/31/1977 |
| 4026408 | Chip conveyor An elongated conveyor for effecting unidirectional movementof materials lengthwise thereof, said conveyor having an upwardly opening trough and structure therein for advancing the materials unidirectionally, which advancing structure is reciprocable below... | 05/31/1977 |
| 4026396 | Control device for forward-reverse transmission gears Pressure fluid control for a transmission. There is provided a pressure fluid control device for a transmission, particularly applicable to use in fork lift trucks, wherein a suitable hydraulic selector receives pressure medium from a pressure creating de... | 05/31/1977 |
| 4026325 | Miniature four-way valve A miniature four-way valve, particularly for the control of a pressurized gas, such as air, constructed and arranged so that it can be made in small sizes without excessive expense while being reliable, sturdy and resistive to damage. The valve includes a... | 05/31/1977 |
| 4026093 | Hay-raking machine Hay-raking machine having a plurality of raking means rotatable on vertical axes. The invention relates to the type of hay rake having a plurality, as four, vertically rotatable raking devices supported by ground wheels and connectible to a tractor, as by... | 05/31/1977 |
| 4025794 | Ionization detectors with iron-55 as a radioactive source Ionization detector capable of operation at elevated temperatures and utilizing iron-55 as a radioactive source within the ionization chamber.... | 05/24/1977 |
| 4025568 | 4-Homoisotwistyl bromide 4-HOMOISOTWISTYL BROMIDE HAS BIOLOGICAL ACTIVITIES TO PLANTS. It is useful as an intermediate to produce 3-acetylamino-4-homoisotwistane which has an antiviral effect and a biological activity to plants. 4-homoisotwistyl bromide is obtained by reacting 4-... | 05/24/1977 |
| 4025525 | Allantoin compound with a metal salt of 2-pyrrolidone-5-carboxylic acid Allantoin compound with a metal salt of 2-pyrrolidone-5-carboxylic acid has a solubility which is from 2.5 to 4 times greater than that of pure allantoin. The compound has almost the same pharmacological effect as allantoin itself and is harmless, and the... | 05/24/1977 |
| 4025514 | Arylamino pyrimidinic derivatives Compounds of the formula ##STR1## wherein Ar is phenyl or phenyl substituted by one or more halogens, a trifluoromethyl, a methylenedioxy, one or more methoxy, an alkyl having one to 4 carbon atoms or a dimethylamino, And R is ##STR2## and... | 05/24/1977 |
| 4025457 | Process for manufacturing gaseous mixtures rich in hydrogen A hydrogen manufacturing process is carried out by catalytic steam reforming of normally gaseous or liquid hydrocarbons using a catalyst comprising substantially silica-free aluminum oxide at temperatures above 850° C., the catalyst optionally also compr... | 05/24/1977 |
