baber/WOPTO huggingface dataset:
Patent GB-123512-A (GB)
Title: Improvements in Electrically Operated Abrading Machine.
Inventor: OLSON NILS GREGOR
IPC: B24B27/00
Filed: 1918-12-16
Abstract: 123,512. Olson, N. G. Dec. 16, 1918. Roller apparatus; driving-devices; tables.-The grinding tool is driven 'directly by an electromotor, and is given an axial traversing motion. The grinding-tool 35 is fitted in an internally screw-threaded holder 23 carried on a sleeve 22 keyed to the shaft of an electric motor 6. A frame 9 surmounts the motor, and carries at one end a countershaft 16 driven through a pulley 26 from the motor shaft. A disk 25, mounted obliquely on the countershaft, engages a level 18, pivoted at one end 50 and engaging at the other end with an annular groove 21 on the sleeve 22, thereby imparting to that sleeve and the tool 35 a longitudinal reciprocating motion. A table 31 is carried by an adjustable link 14 from the other end of the frame 9, and is provided with an adjustable aperture to accommodate various sizes of grinding-tools. An additional rest or support 37 is carried by an adjustable link 40. The apparatus can be used with the grind. ing-tool vertical; or it may be turned so that the grinding-tool is horizontal, the device then resting upon the edges of the frame 9, the table 31, and an extension 7 fitted to the motor base. The sleeve 22 may be temporarilv unkeyed from the motor shaft so as to permit it to be reciprocated thereon, without rotation.
Patent GB-986902-A (GB)
Title: Heat exchangers
Inventor: SMITH JOHN
IPC: F28D7/12
Filed: 1962-05-31
Abstract: 986,902. Heat exchangers. JOSEPH LUCAS (INDUSTRIES) Ltd. July 4, 1963 [May 31, 1962], No. 20979/62. Heading F4S. In a heat exchanger the space between the coaxial, substantially cylindrical inner and outer casings 6, 3 respectively is divided into two series of alternating passages 11, 12 by a sinuously corrugated metal sheet 10. One fluid enters the outer casing through a conical inlet 4 and passes along passages 11 to the radially extending outlet at the opposite end of the casing. The other fluid enters the inner casing through the radially extending inlet 7, passes into the passages 12 through a plurality of angularly spaced ports 9 near the other end of the inner casing and exits through the coaxial outlet tube 8.
Patent GB-802396-A (GB)
Title: Multichannel transducer head assembly for magnetic recording/reproducing apparatus
IPC: G11B5/29
Filed: 1955-07-20
Abstract: 802,396. Magnetic recording heads. CLEVITE CORPORATION. July 20, 1955 [Aug. 13, 1954], No. 20994/55. Class 40 (2). A multichannel magnetic transducing head assembly for magnetic recording/reproducing apparatus comprises two frames 10, 16, each having a plurality of spaced notches 14 of similar size and spacing, each slot having secured therein the back portion of a respective one of a plurality of polepieces 17 all of whose pole faces in each frame are in a plane, means holding the two frames together with the polefaces in alignment to form a plurality of substantially closed magnetic circuit cores each with a transducing gap and a back gap between its poles faces, a respective coil 23 wound about a portion of each core, a plurality of shields 30 one between each two adjacent cores and each comprising a single piece of material of extent at least as large as that of the cores, and means holding the shields in position. As shown, the polepieces 17 of both frames are of the same shape and carry coils 23, and they are secured to their respective brass channel frames 10, 16 by cement 22 after being aligned in a jig (not shown), which subsequently is removed. The shields are housed in notches 15 in the frames 10, 16 and are connected together by a wire 30a leading to ground. A non-magnetic shim 26 is disposed between the pole faces. The Figure 5 assembly is placed in a housing 35, Fig. 8, the wire leads are connected to terminal pins 39 of a board 38, and the housing is filled with a hardenable casting material 40. The assembly is for data recording and computor applications. Specification 721,755 is referred to.
Patent GB-1027297-A (GB)
Title: Colour television receiver
IPC: H04N17/04
Filed: 1964-05-21
Abstract: 1,027,297. Colour television receivers; cathode-ray tube operating circuits. RADIO CORPORATION OF AMERICA. May 21, 1964 [June 4, 1963], No. 21099/64. Headings H4F and H4T. The invention relates to a colour television receiver including a multi-gun colour cathode-ray tube 40 and is concerned with the problem of adjusting the bias applied to the tube grids. The luminance signal is applied from amplifier 25 to the cathodes 41R, 41B, 41G, whilst the colour difference signals are applied to the grids 43R, 43B, 43G from a matrix circuit consisting of triodes 150, 160 and 170. The matrix circuit is of the type which produces colour difference signals in response to X and Z detected signals and receives inputs from synchronous detectors consisting of pentodes 100 and 120. The matrix circuit triodes utilize a common cathode resistor 180 and in accordance with the invention negative-going pulses are applied to this resistor during the horizontal flyback intervals to drive the triodes into gridcathode conduction and to thereby cause bias to be established on the grid coupling capacitors 119, 189, 139. The pulses are derived from a circuit consisting of triode 200 which receives positive-going pulses during the horizontal flyback intervals on its grid and is normally held non-conducting by the charge of grid capacitor 197. During each pulse when the triode conducts the anode goes negative to produce a pulse which is applied through capacitor 208 to the common cathode resistor 108. Control of the amplitude of the pulses is effected by adjusting the value of the anode load. For this purpose the anode load comprises a first resistor 207 and two further resistors 211, 213 which may be switched into circuit by means of a three-position switch assembly comprising switch elements S1 and S2. As the amplitude of the pulses is varied, the biases developed at the grids of the matrix tubes varies correspondingly and likewise the bias applied to the grids of the cathode-ray tube 40. Switch assembly S1 S2 thus comprises a master bias control for the cathode-ray tube grids. The circuit is otherwise generally conventional. Potentiometer C comprises a chrominance signal amplitude control and is connected in the output of the chrominance amplifier 70, whilst potentiometers 33 and 35 comprise luminance amplitude controls for the signals applied to cathodes 41b, 41g.
Patent GB-1313265-A (GB)
Title: Perfluoroalkylalkylmonocarboxylic acid esters their polymerisation
IPC: D06M15/277
Filed: 1971-04-19
Abstract: 1313265 Perfluoroalkylalkylmonocarboxylic acid esters CIBA-GEIGY AG 19 April 1971 [9 Feb 1970 6 Jan 1971] 21171/71 Heading C2C [Also in Divisions C3 and D1] Novel esters which contain (a) at least one C 4-24  perfluoroalkyl radical, bonded via a C 1-10  alkylene or C 5-6  cycloalkylene group in an ester-like manner to (b) a cycloaliphatic radical, substituted in the position adjacent to the ester bridge by an optionally etherified or esterified hydroxyl group, the cycloaliphatic radical being bonded, in turn, via a bridge member to (c) a C 2-3  alkenyl group, which is optionally linked via a bridge member, with a second radical as defined under (b), which is in turn bonded, via an ester bridge to a radical as defined under (a), are prepared by reacting an acid containing a radical as defined under (a) with a cycloaliphatic 1,2-monoepoxide which is bonded via a bridge member to a C 2-3  alkenyl group, which is optionally linked via a bridge member to a second cycloaliphatic 1,2-monoepoxide, the reaction taking place at 20-70‹ C. The esters may be further reacted to form polymers (see Division C3), and may be used (as monomers or polymers) to produce an oleophobic finish on woven fabrics (see Division D1).
Patent GB-1474107-A (GB)
Title: Circuits for supplying current to lighting systems of wheeled vehicles
IPC: B62J6/00
Filed: 1974-05-14
Abstract: 1474107 Supply circuits for bicycle lights NEEDS Inc 14 May 1974 [14 May 1973] 21229/74 Heading H2H A supply circuit for the lights 3, 5 of a bicycle comprises an A.C. generator 1 driven by the motion of the bicycle, a battery 17, rectifiers 40, 41 and a manually operable switch 42. When the switch 42 engages contact 42a, the headlamp 3 and the rear lamp 5 are supplied with the negative half cycles of the generator output by the rectifier 40. The rectifier 41 enables the positive half cycles of the generator output to charge the battery 17. This position of the switch is suitable for day time use of the bicycle since the illumination of the lamps by the generator may be inadequate. When the switch engages contact 42b the lamps are illuminated, even if the bicycle is motionless, by the battery 17. During movement of the bicycle the generator charges the battery and also supplies current to the lamps via the rectifier 41 and the contact 42b.
Patent GB-1071839-A (GB)
Title: New heterocyclic sulphur compounds and methods for their production
IPC: C07D333/24
Filed: 1966-05-12
Abstract: Novel compounds of the formula <FORM:1071839/C2/1> where R is H, a pharmaceutically acceptable cation, a C1- 4 alkyl or a C4- 12 dialkylaminoalkyl radical, R1 is H or C1 alkyl, one of R1 and R2 is hydrogen and the other is a 2- or 3-thienyl substituent which may be substituted by bromine or chlorine in the 5-position, are prepared by hydrolysis of a corresponding thienylnaphthalene having a substituent -CHR1Y in the 1-position where Y is a group hydrolysable to the carboxyl group, followed if required by acidification, esterification or salt formation. Exemplified groups which may be hydrolysed are the cyanide, acetimidic acid amide, hydrazide amidine ester, acid chloride and anhydride groups, preferably under alkaline conditions. The hydrolysable compounds may be prepared as follows:  The cyanide may be formed from the corresponding bromide by reaction with KCN, the bromide being formed by bromination of the unsubstituted compound using N-bromosuccinimide.  The cyanide will then contain a 5-bromothienyl group, which may lose bromine, e.g. by reduction using a palladium catalyst.  The 5-chlorothienyl derivatives are formed by direct chlorination or by using SO2Cl2.  The initial 1-methyl 4- or 5-(2-thienyl)naphthalene may be formed from 1-methyl-4-oxotetrahydronaphthalene using the Grignard reagent of 2-bromothiophene, and the 3-thienyl derivative using the lithium alkyl formed from 3-bromo-thiophene, followed by dehydration and dehydrogenation of the dihydronaphthalene derivative.  The acetimidic acid may be formed from the cyanide using HBr and ethanol in ether. The amide may be formed by heating the acetimidic acid under reduced pressure.  The amidine may be formed from the acetimidic acid with NH4Cl.  The ethyl ester may be formed from the acetimidic acid with Na2CO3 under reduced pressure, and the hydrazide by heating the ester with hydrazine hydride.  The acid chloride may be formed by treating the acid with thionyl chloride, and the anhydride from the acid chloride and its sodium salt in dimethyl sulphoxide.  Exemplified salts are the alkali metal, ammonium, choline and diethylamine salts, and exemplified esters are the methyl, ethyl, n-propyl, dimethylaminoethyl, diethylaminoethyl and diethylaminopropyl esters. Pharmaceutical compositions having anti-inflammatory properties, contain the compounds of Formula I, preferably in a form adapted to oral administration.
Patent GB-808879-A (GB)
Title: Thiophosphoric acid esters
IPC: C07F9/165
Filed: 1957-07-04
Abstract: The invention comprises thiophosphoric esters of the general formula: <FORM:0808879/IV (b)/1> where R, R1, R2 and R3 are C1-4 alky groups and Z is 0, 1 or 2.  They are prepared by reacting (1-alkylmercapto)- or (1-alkylsulphoxyl)- or (1-alkylsulphonyl)-2-halomethyl-4-alkyl benzenes with salts (especially alkali metal or ammonium salts) of o,o-dialkylthioor thionothiolphosphoric acids, preferably at slightly elevated temperatures, e.g. 20-80 DEG  C., and in the presence of an inert solvent such as a lower aliphatic alcohol, lower aliphatic ketone or aromatic hydrocarbon.  The chloromethyl compounds are preferred.  The 1-alkylmercapto - 2 - halomethyl - 4 - alkylbenzenes may be obtained by reaction of 1-alkylmercapto-4-alkylbenzenes with formaldehyde and a hydrohalic acid.  They may be oxidized to the sulphoxides and sulphones by known methods.  Alternatively the oxidation may be effected on the thiophosphoric ester reaction products.  The products are insecticides (see Group VI).  Examples describe the preparation of: O,O-dimethyl-, -diethyl-, and -diisopropyl-S-(2-methylmercapto - 5 - methylbenzyl) phosphorothiolate; O,O-diethyl-S-(2-methylmercapto-5-ethylbenzyl) phosphorothiolate; O,O-diethyl-S - (2 - ethylmercapto - 5 - methylbenzyl) phosphorothiolate; O,O-dimethyl-, -diethyl- and -diisopropyl - S - (2 - methylmercapto - 5 - methyl) phosphorothiolothionate; O,O-diethyl-S - (2 - ethylmercapto - 5 - methylbenzyl) phosphorothiolothionate; O,O-diethyl-S-(2-methylmercapto - 5 - ethylbenzyl) phosphorothiolothionate; O,O-diethyl-S-(2-methylsulphonyl-5-methylbenzyl) phosphorothiolate; and O,O-diethyl - S - (2 - methylsulphoxyl - 5 - methyl) phosphorothiolothionate.  1 - Methylsulphoxyl - and 1 - methylsulphonyl-2-chloromethyl-4-methylbenzene used as starting materials are prepared by the action of H2O2 in glacial acetic acid at 0 DEG  and 50 DEG  C. respectively or 2 - chloromethyl - 4 - methylthioanisole.ALSO:Insecticidal and plant-protecting compositions comprise thiophosphoric esters of the general formula <FORM:0808879/VI/1> where R, R1, R2 and R3 are C1-4 alkyl groups and Z is 0, 1 or 2.  (For preparation see Group IV (b)).  They may be applied in dilution or solution with solid or liquid carriers such as chalk, talc, bentonite, water, alcohols and liquid hydrocarbons, or as aerosols.  They may be combined with other pesticides.  Generally, concentrations of 0.0001 to 1 per cent are used.  In an example, a composition containing 0.01 per cent of O,O-diisopropyl-S-(2-methylmercapto - 5 - methylbenzyl) dithiophosphate, dimethyl formamide, a benzyl hydroxy diphenyl polyglycol ether, and water is prepared.
Patent GB-699731-A (GB)
Title: Improvements relating to the removal of lids of containers
IPC: B67B7/14
Filed: 1948-08-12
Abstract: 699,731. Opening paint cans &c. COOKE, N. R. Aug. 9, 1949 [Aug. 12, 1948], No. 21302/48. Class 66 The lid of a paint can &c. is raised by inserting a blade 22 of an opener 16 under its rim 26 and levering it up by depressing the handle 18 of the opener 16 which is pivoted at 34 to a lug 3'2 which is slotted to rest on an ear 12 which receives an end of the handle 14 of the can. The rim 26 rests in a slot between two blades 20 and 22 of the opener thus reducing distortion of the rim and allowing the upper blade 20 to be used to raise the lid higher than is possible with the lower blade. The opener is slotted to allow the lug to slide at the pivot.
Patent GB-188089-A (GB)
Title: Improved gas regulator for incandescent burner
IPC: F23D14/48
Filed: 1921-08-11
Abstract: 188,089. Charles, W. J. Aug. 11, 1921. Incandescent gas burners.-A gas nipple regulator comprises a rotatable shaft d having a screw-threaded end d<2> adapted to engage a screwthreaded aperture h<3> in a member h provided with a pin h<2> engaging an inclined slot g in a web c<3>, provided with guide arms c<4>, c<5> and a peg c<2> so that, on rotating the shaft d, the member h travels across the cylindrical interior a<3> of a nipple body a and moves the peg c<2> up and down relatively to a gas outlet a<2>. The shaft d is fitted in a sleeve e, which screws into the nipple body a, a coiled spring f or a packing gland being provided to prevent the escape of gas. The pin h<2> passes through the branches of a bifurcation h<4> on the member h.
Patent GB-858198-A (GB)
Title: Improvements in or relating to sound reproducing apparatus
IPC: G11B15/34
Filed: 1958-07-03
Abstract: 858,198. Combined magnetic/optical soundon-film apparatus. KODAK Ltd. July 3, 1958 [July 3, 1957], No. 21361/58. Class 40 (2). A kinematograph projector having a sound drum 6 and associated optical apparatus 8, 9 of normal construction has a magnetic transducing head 15 mounted to engage a magnetic stripe on the film, simultaneously or optionally with the optical apparatus. The head is mounted by a stalk 28 in the arrangement of Fig. 4, which provides adjustments to align the head with the film and which includes a spring link 31 to force the head against it. A lever 35 moves the head out of engagement, a mechanically-linked micro-switch 38 revising the circuitry (not described) for use with optical sound-films.
Patent GB-597539-A (GB)
Title: Improvements in or relating to blocking-layer rectifiers
IPC: H01L23/367
Filed: 1945-08-22
Abstract: 597,539. Asymmetrically-conducting resistances. PHILIPS LAMPS, Ltd. Aug. 22, 1945, No. 21462. Convention date, June 12, 1940. [Class 37] A rectifying cell 15, 151, 15", for example with aluminium base, selenium layer, blocking layer and counterelectrode, is wedged into a cavity, with sides preferably coned, in a cooling plate 16, 16<1>, 16". The selenium and other layers have their edges stepped inward from the aluminium to avoid accidental contact. The assembly may be supported on insulating rods 17 passing through apertures in the plates with upstanding rims 7. Each counter-electrode is electrically connected to the cooling plate of the adjacent element.
Patent GB-470437-A (GB)
Title: Improvements in or relating to collapsible chocks and the like for use in mines
IPC: E21D15/60
Filed: 1936-08-05
Abstract: 470,437. Mine - roof supports. LINSINGEN, M. VON, (trading as BOCHUMER EISENHUTTE HEINTZMANN & CO.), and TOUSSAINT, H. Aug. 5, 1936, No. 21542. [Class 20 (ii)] [Also in Group XXV] The double wedge members 11, 12 for mounting between the beams 10 or chock units of collapsable supports, are locked by a sliding key 13, the upper part of which is guided by means such as ribs 18 on the upper wedge 12. The lower part 15 of the key is preferably tapered while the upper part is of prismatic form and a step 16 is provided to limit its downward movement. Lifting of the key to release the parts is effected bv a lever which is inserted through front or side apertures in the upper wedge and which engages either under a nose 14, or with the bounding surfaces of longitudinal and transverse apertures 17, 17a formed in the key ; the aperture 17a is shown by a chain dotted line in Fig. 1. The two wedges may be guided in relation to one another by means of ribs and grooves formed on their contacting surfaces. The lower tapered part of the key may project only a short distance into the lower wedge or, alternatively, it may project a sufficient distance to enable the key to be lifted without completely releasing the two wedge members. Thus, by raising the key slightly, the wedge members will move relatively over a short distance and the behaviour of the gangue can be noted.
Patent GB-249401-A (GB)
Title: Improvements in or relating to fire alarm devices
IPC: G08B25/12
Filed: 1925-08-28
Abstract: 249,401. Western Electric Co., Ltd., Buer, S. T., and McWhirter, E. M. S. Aug. 28, 1925, Fire-alarm systems and apparatus. - In fire-alarm street box apparatus, the horizontal force applied to the pull handle is converted into a vertical force for .operating the tripping lever of the transmitting apparatus. As shown, the pull handle P has a shaft which projects through a slot C in the door of the street box, and is attached to a vertical lever V pivoted at B. The lever V carries a roller R which bears on a crank K mounted at one end of a shaft F, which is supported on the door. The other end of the shaft F carries an operating lever O which, when the door is closed, is disposed over the starting lever J of a transmitting apparatus. When the handle P is pulled, the rotary motion of the lever V is transmitted to the crank K, and the lever 0 exerts a vertically downward force on the lever J to trip the transmitter. When the handle is released, the levers 0, V are restored by springs N, Q respectively. A glass panel G passes through a slot in the pull handle so that, when the handle is operated, the panel is broken. The panel is inserted through a slot in the shroud SH, and is supported by thumb screws T. Spare panels are stored in a pocket A on the door. A stop L is provided for the lever J, to prevent damage to the lever when great force is applied to the pull handle. In a modification, the roller R, crank K, and operating lever 0 are situated at a point intermediate of the ends of the lever V.
Patent GB-1187573-A (GB)
Title: Hydraulic Systems for Reciprocating Rams
IPC: B30B15/20
Filed: 1968-05-07
Abstract: 1,187,573. Shearing. PACIFIC PRESS & SHEAR CORP. 7 May, 1968 [4 Aug., 1967], No. 21597/68. Heading B3W. [Also in Division F1] An hydraulic machine for shearing metalplate comprises a blade 1 actuated by pistons 9, 11 that are hydraulically in series and dimensioned to operate in unison when pressure is applied thereto by a pump 21 through a valve having a spool with three sections 45, 47, 49 and controlled by solenoids 53, 55. The machine is contrived such that the speed at which the blade descends is reduced automatically when the load becomes excessive. Manual operation of an electric switch 71 joins contacts 75 to actuate a solenoid 65 for a pilot valve 61, which effects closure of a valve 61, so as to disconnect the output side of the pump from a tank 25. The pump then subjects the pistons to pressure by way of section 45 of the spool and thus drives the blade downwardly at high-speed. If the load on the blade becomes excessive, a pressure-operated switch 83 associated with a cylinder 3 for the piston 9 closes to operate a relay 87, which closes contacts 91, 93 to bring section 47 of the spool into use, thereby connecting the lower end of a cylinder 5 for the piston 11 to the tank 25 and so reducing the speed of the blade. At the end of its downward stroke, the blade operates a switch 37 and thereby renders the system such that the pump raises the pistons and returns the blade to its original position. Operation of the blade at reduced speed can be obtained when desired by closure of a manually-operated switch 111. A non-return valve 20 prevents the blade descending unintentionally when lodged at its highest position. A levelling and rake-angle control-system may be connected at 31.
Patent GB-651929-A (GB)
Title: A process for producing alcohols and catalyst therefor
IPC: C07C29/04
Filed: 1948-08-16
Abstract: The direct hydration of olefines to alcohols, particularly of ethylene to ethanol, is effected with a catalyst comprising activated montmorillonite which has been impregnated with hydrofluoric acid and calcined.  Hydration is preferably effected at 250-350 DEG  C. and under a pressure exceeding 500 lbs. per square inch.ALSO:A catalyst for the direct hydration of olefines (see Group IV (b)) is prepared by impregnating activated montmorillonite with hydrofluoric acid and calcining the product at a temperature of at least 200 DEG  C., preferably 400-600 DEG  C.