baber/WOPTO huggingface dataset:
Patent GB-374695-A (GB)
Title: Improvements in or relating to radio and other high frequency receivers
IPC: H03J3/14
Filed: 1931-08-19
Abstract: 374,695. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Koch, W. R. ; 220, Cooper-Street, Camden, New Jersey, U.S.A.) Aug. 19, 1931, No. 23403. Convention date, Aug. 19, 1930. [Class 40 (v).] In a high frequency receiver having automatic volume control, a relay is provided for operating an indicator when the volume-controlled signal strength reaches a certain level. The Figure shows a superheterodyne receiver comprising a high frequency valve 1, first detector 3, local oscillator 5, intermediate frequency amplifiers 7, 9, second detector 11, in parallel with which is a volume control valve 15, and a push-pull low frequency stage 13 feeding a loud-speaker 43. In the output circuit of the amplifier 9 is connected the operating winding of a relay 35 which in one position short-circuits the coil of the loud-speaker 43 ; and in the other completes the circuit of an indicating lamp 46 fed from the transformer secondary 47. Grid bias and plate potentials for all valves are taken from a potentiometer 19 across the output of a rectifier 17. The control valve 15 is normally biased to the cut-off point when no signal is received and no current flows through resistances 53, 55. The grids of the amplifiers 1, 7, 9 are connected to resistances 53, 55 and are normally biased to give a predetermined anode current with no signal. The plate circuit of the valve 9 comprises two parallel branches, one containing the relay 35 and the other a potentiometer 51 which is adjusted, again with no signal, until the relay armature 37 is held against contact 39 to short-circuit the loud-speaker. When the receiver is tuned to a signal the control valve 15 passes current and the negative bias on the amplifiers 1, 7, 9 increases ; the anode current of 9 decreases and the relay armature falls on to contact 41 opening the loud-speaker circuit and causing the lamp 46 to light.
Patent GB-1012757-A (GB)
Title: A wall, roof, awning, or suchlike construction or a cladding therefor, respectively, and a method for the manufacture thereof
IPC: B65D90/02
Filed: 1963-06-12
Abstract: 1,012,757. Walls and roofs. HUNTER DOUGLAS INTERNATIONAL (QUEBEC) Ltd. June 12, 1963 [June 12, 1962.(2)], No. 23444/63. Heading E1V. In a wall, roof, awning or like construction or a cladding therefor respectively, comprising at least two stringers 1, with projections and recesses on which or in which respectively, lamellae strips or like elements 4 (Fig. 1) with inwardly turned edges 5 are arranged to which the stringers 1 extend transversely the stringers 1 are on either side of the elements 4, the projections 3 and recesses 2 of the or each stringer 1 on one side of the elements 4 being staggered respectively relative to the projections 3 and recesses 2 of the or each stringer 1 on the other side of the elements 4. The stringers 1 may be spaced apart. Every other element may be locked against longitudinal movement in at least one stringer 1 on one side and at least one on the other side of the elements 4. On the projection 3 of at least one stringer 1 there may be at least a short piece 7 (Fig. 6) of an element 4. Two stringers 1 may be located so that one stringer 1 on one side of an element 4 is opposite to the other on the other side thereof. In forming the construction the recesses 2 of the stringer(s) 1 to be on either side of the elements 4 have them inserted therein, the two parts so obtained being then placed on each other and the elements 4 pressed into the projections 3 facing them. When in a construction so obtained opposing stringers are spaced apart, they may be shifted on the elements 4 to face each other.
Patent GB-1268731-A (GB)
Title: Combination motor starter for controlling and protecting motor circuits
IPC: H01H71/12
Filed: 1970-05-15
Abstract: 1,268,731. Overload protective systems; fusible cut-outs. WESTINGHOUSE ELECTRIC CORP. 15 May, 1970 [28 May, 1969], No. 23599/70. Headings H2G and H2K. [Also in Division H1] A protective switchgear for controlling an electric motor includes a device 13 for interupting the circuit to the motor; an overload responsive device 15 which operates the device 13 with a time delay if the motor current exceeds a first value below the locked-rotor current of the motor; a fault current responsive device 9 which intercepts the circuit more quickly if the current exceeds a second value greater than the lockedrotor current; and a current limiting device 11 acting rapidly to limit the current to a value which will not damage the overload responsive device 15. As described the devices 9, 13, 15 are respectively an electromagnetically tripped automatic circuit breaker, an electromagnetic contactor, and a thermal relay (see Division H1). The current limiting device 11 is a fuse consisting of a plurality of wires 109 extending between two terminals 101, 103 in a sand filling. When the fuse blows the heat in the sand is sufficient to fuse another unconnected wire 112 allowing an indicator button 113 to be moved upwards by a spring 114.
Patent GB-815471-A (GB)
Title: Improved photosensitized planographic metal plates
IPC: G03F7/021
Filed: 1955-08-16
Abstract: 815,471. Diazo sensitized metal plates. MINNESOTA MINING & MANUFACTURING CO. Aug. 16, 1955 [Aug. 16, 1954; July 25, 1955], No. 23641/55. Addition to 718,525. Class 98(2) A smooth side of a plate as of aluminium, zinc, tinfoil, copper, lead, electrodeposited chromium or copper, lead, magnesium, tantalum or titanium is rendered permanently hydrophilic by treatment with an aqueous solution of a polyacid organic polymer or salt thereof, with formation of a film tightly bonded to the surface of the plate and substantially free of water-soluble material, and this is sensitized with a coating of water soluble diazo material. Exposure under a negative to make the light-affected areas ink-receptive and washing to remove the diazo material from the remaining areas produces a lithographic printing plate. In Example 1 an aluminium sheet or foil is cleaned as with sodium triphosphate solution, immersed in aqueous one per cent polyacrylic acid solution, sprayed with water, dried, sensitized with the diazo resin of the parent Specification and further treated as there described. Polymethylacrylic acid solution may be used as an alternative. Examples 2, 3 indicate the use of the sodium salt carboxymethyl cellulose and of carboxymethyhydroxy-ethyl cellulose respectively in similar procedure. In Example 4 a magnesium foil or sheet is degreased with trichlorethylene, treated with an aqueous solution of a vinyl addition product of methyl vinyl ether and maleic anhydride a copolymer which may be obtained under the trade name "PVM/MA", washed, sensitized and further treated similarly. Other water soluble polymers including sulphomethyl cellulose formed by interaction of chloromethanesulphonic acid and alkali cellulose, lignosulphonic acid and a water soluble styrene/maleic anhydride for treatment of the metal plates are quoted. Specification 670,672 [Group III] is referred to.
Patent GB-1074081-A (GB)
Title: 5,10-epoxy-5-(aminipropyl) dibenzocycloheptenes
IPC: C07D493/08
Filed: 1964-06-08
Abstract: The invention comprises compounds of formulae <FORM:1074081/C2/1> <FORM:1074081/C2/2> wherein R is a hydrogen atom or an hydroxy, oxo, hydroxylimino, amino, mono- or di(C1- 6 alkyl)-amino, C2- 6 alkanoylamino or -S-(CH2)n-S- group where n is 2 or 3, X and X1 are hydrogen or halogen atoms or C1- 6 alkyl, C2- 6 alkenyl, trifluoromethyl, hydroxy, C1- 4 alkoxy, mercapto, C1- 4 alkylthio, C1- 4 alkylsulphonyl, sulphamoyl or mono- or di-(C1- 4 alkyl) sulphamo groups, more than one substituent being optionally present on each benzenoid ring, and the group -NR1R11 is a mono- or di-(C1- 6 alkyl) amino group or a saturated heterocyclic amino group having 5 or 6 ring atoms, which may contain a second, optionally C1- 4 alkylated, nitrogen atom or an oxygen atom, or, in the carbamates of the invention, R1 is a C1- 6 alkyl group and R6 is an alkyl, aralkyl or aryl group, and non-toxic acid addition salts thereof, and their preparation by acid hydrolysis of a compound of formula <FORM:1074081/C2/3> wherein R4 and R5 are hydrogen atoms or alkyl, aralkyl or aryl groups, to form a compound of the invention wherein R is an hydroxy group followed if desired by one or more of (a) O-acylation; (b) oxidation to the corresponding ketone; (c) conversion of a ketone to its oxime, reduction of the oxime to an amine, and N-alkylation or acylation; (d) conversion of a ketone to its thioketal and desulphurizing by catalytic hydrogenation; or (e) dealkylating a dialkylamino group -NR1R11 by reaction with a haloformate to form a carbamate of the invention, followed by hydrolysis. Starting materials are prepared as described in Specification 1,074,086.  The compounds of the invention, other than the carbamates, have anti-depressant activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral or parenteral administration.
Patent GB-1273688-A (GB)
Title: Method of separating carbon dioxide from a gaseous mixture
IPC: C01B32/50
Filed: 1970-05-15
Abstract: 1,273,688. Carbon dioxide separation. FLUOR CORP. 15 May, 1970 [21 May, 1969], No. 23793/70. Heading B1L. A gaseous mixture of CO 2 , H 2  and inert gases derived from an NH 3  plant or H 2  synthesis plant is fed via line 10 into absorber 11 containing a CO 2  selective absorbent, under high pressure e.g. glycerol triacetate, butoxydiethylene glycol acetate, methoxy triethylene glycol acetate, propylene carbonate or n-methylpyrrolidone. On leaving the absorber 11 the carbon dioxide is flashed from the absorbent at three stages 16, 19, 22, which are at progressively lower pressures, and fed respectively to compression stages 26, 25, 24 before being combined, compressed and passed to a urea reactor.
Patent GB-194240-A (GB)
Title: Improvements in and relating to tie wires
IPC: B65D63/12
Filed: 1922-02-06
Abstract: 194,240. Gerrard, A. J., and Wright, P. Feb. 6, 1922. Bale ties.-Wire bale ties which are to be used in straining and twisting machines, such as are described in Specification 197,020, are provided with a deformed end to facilitate engagement by the straining mechanism. The deformation may comprise a flattened portion 15 with shoulders 16, so that upon engagement with the holding members 17, 20 of the straining- machine the end 9 is pulled into a position pointing downwards as shown in Fig. 3, preventing projecting ends in the finished knot. Ties may be deformed at one or both ends and square shoulders 25, Fig. 8, may be provided.
Patent GB-1474086-A (GB)
Title: Coaster brake hub for a bicycle
IPC: F16D41/36
Filed: 1974-05-30
Abstract: 1474086 Coaster brake hubs SHIMANO INDUSTRIAL CO Ltd 30 May 1974 [31 May 1973] 24031/74 Heading B7E A coaster brake hub for a bicycle comprises a hub shell 1, a fixed member consisting of both a shaft 4 passing through the shell and a brake cone 7 fixed to one end of the shaft, a driving means 6 rotatably mounted on the shaft 4 at its end remote from the cone 7, a sprocket 10 fixed to the driving means 6, a clutch cone 11 screwthreadedly engaged with the driving means 6, a plurality of brake shoes 12 each having two tapered internal faces 12a, 12b engageable with outer tapered faces of the cones 11 and 7 respectively, and a helical spring 14 extending in the direction from the cone 11 towards the cone 7 and engaging the cone 11 and the fixed member. In operation rotation of the driving means 6 in the forward direction urges the cone 11 to the right as viewed in Fig. 1 by virtue of the screwthreaded connection between the cone 11 and means 6, thus causing the cone 11 to engage the shell 1 so that torque is transmitted to the shell from the means 6. Forward rotation of the means 6 and hence of the cone 11 also tends to wind up the spring 14 and radially contract it so that the spring does not resist rotation of the cone 11. However on commencement of reverse rotation of the driving means 6 and cone 11 the spring 14 tends to be unwound and hence is radially expanded so preventing further reverse rotation of the cone 11. Thereupon the reverse motion of the means 6 causes the cone 11 to be driven to the left as viewed in Fig. 1 by virtue of the screw-threaded connection, so forcing the brake shoes 12 into engagement with the hub shell 1. In the Fig. 1 embodiment the spring 14 is of opposite hand to the screw-thread on the driving means 6 and is engaged within bores in the cones 7 and 11. This embodiment may be modified (Fig. 3, not shown) by frictionally engaging the end of the spring adjacent the cone 7 around the shaft 4 or a sleeve fixed thereto, such that if reverse torque exceeds a predetermined value the spring is disengaged from the shaft or sleeve to prevent damage thereto. Alternatively, Fig. 4, the spring 14 may be of the same hand as the screw-thread and engage over a cylindrical extension 110 of the cone 11 and in a bore in the cone 7.
Patent GB-960742-A (GB)
Title: Olefinically unsaturated acid amides
IPC: C07D207/27
Filed: 1962-06-22
Abstract: Substituted lactams of formula: <FORM:0960742/C1/1> where n is 3-5 and R is an a , b -olefinically unsaturated radical derived from an a , b -olefinically unsaturated monocarboxylic acid, are obtained by reacting RCONH2 with a compound of formula <FORM:0960742/C1/2> , where R1 is C 1- 6 alkyl, in the presence of a catalytic amount of a strong acid at elevated temperature; the resulting products in which R is CH2=CH-and CH2=C(CH3)- are claimed as novel. Preferably R1 is methyl, the reaction is conducted at 100-150 DEG C., and a polymerization inhibitor is present.  Amide reactants specified are acrylamide, methacrylamide and sorbic acid amide. Specified catalysts are p-toluenesulphonic, phosphoric, hydrochloric and sulphuric acids; these may be used in amounts of 0.05-1% by weight based on the amide.
Patent GB-775120-A (GB)
Title: Improvements in direct coupled amplifiers
Inventor: JOHNSON ANTHONY BEVIS
IPC: H03F3/36
Filed: 1954-08-19
Abstract: 775,120. Valve amplifying circuits. SAUNDERS-ROE, Ltd. Sept. 30, 1955 [Aug. 19, 1954], No. 24158/54. Class 40(6) The first and second stages of a directcoupled valve amplifier, Fig. 1 (not shown) are compensated for variations in heater supply voltage. In the second stage, the valve heater is fed with unstabilized A.C. from transformer winding 11, while in the first stage the heater is fed with (1) an unstabilized A.C. voltage VH/A from winding 12, in series with (2) a stabilized A.C. volt- I age VH (1- -) from a constant voltage A transformer 13. In these expressions VH is the rated heater voltage and A the nominal gain of the first stage.
Patent GB-701520-A (GB)
Title: Improvements in tensioning means for shearing clippers
IPC: B26B19/24
Filed: 1948-11-04
Abstract: 701,520. Sheep shears. DEHN, S. G. (Sunbeam Corporation). Nov. 4, 1948, No. 24180/50. Divided out of 701,501. Class 131 A sheep-clipper head comprising a comb and cutter mechanism includes a sleeve spaced from the cutter and through which a tension pin, one end of which engages a fork driving the cutter, extends, a tension pin cup supported by'the sleeve and having a bearing recess for the other end of the pin, abutment means engageable with the cup for adjusting the tension between the cutter and the comb, and means forming a flexible seal between the tension pin and the walls of the cup to provide a chamber for lubricant for the bearing of the pin in the cup and allowing oscillation of the tension pin. As shown the tension pin 101 bears in a socket 103 in the fork 27 and has a bearing surface 104 seated'in the tension pin cup 106 which is telescoped into a bushing 107 threaded into a sleeve 108. A cap 109 threaded on the upper end of the bushing 107 is provided with a pin 111, the surface 112 abutting the cup 106 so that adjustment of the cap 109 relatively to the bushing 107 varies the tension. The tension means are retained in any desired position by the one-way clutch action of an expansion ring 121<SP>1</SP> A flexible diaphragm 113 engages the inner wall of the cup 106 by the action of an expansion ring 118 and engages a groove 117 in the tension pin to provide a chamber 119 for lubricant which flows through the passage 121 to the bearing surface 10 and to prevent the entry of dirt. As disclosed in Specification 701,521, the sleeve 108 and tension pin 101 are inclined at a smaller angle than is usual to the central line of the clipper so that less pressure exists between the bearing surface 104 and the cap 106 to effect a given tension resulting in a longer life for the pivot of the oscillating fork and for the bearing surface 104. There is also less interference between the head 12 and the shorn fleece.
Patent GB-1275284-A (GB)
Title: Machine bearing
IPC: F16C29/02
Filed: 1969-05-13
Abstract: 1275284 Machine tool sliding tables HEALD MACHINE CO 13 May 1969 [16 May 1968] 24373/69 Heading B3B [Also in Division F2] A machine tool table 12 is supported on a base 13 by fluid bearings 10, 14 in which the flow of pressure fluid is automatically adjusted to maintain a constant bearing clearance (see Division F2). The table is moved on the base by an hydraulic cylinder 15. The bearings are provided in an inverted T-shaped member secured to the bottom of the table and fluid bearing pads are provided in both upper and lower and end surfaces of the member.
Patent GB-282907-A (GB)
Title: Improved manufacture of ortho-anisidine and similar aminophenol ethers
Filed: 1926-10-02
Abstract: 282,907. Tcherniac, J. Oct. 2, 1926. o-Aminophenol ethers are produced by acting on an alkyloxyarylcarboxylic acid amide with a hypochlorite and an alkali and then heating, a mono-chloramide being formed as an intermediate product before heating takes place. In an example o-anisidine is obtained by stirring methylsalicylamide with an aqueous solution of sodium hypochlorite and caustic soda, and heating to boiling.
Patent GB-321991-A (GB)
Title: Improvements in and relating to furnace grates
IPC: F23H11/18
Filed: 1928-08-25
Abstract: 321,991. Babcock & Wilcox, Ltd., (Deutsche Babcock-und-Wilcox Dampfkessel- Werke Akt.-Ges.). Aug. 25, 1928. Grates, cleaning.- A roller 3 provided with ribs or projections 4 is freely cupported at the front end of a travelling grate on a lever pivoted at 2 and adapted to bear against the bars 1 of a travelling grate for the removal of clinker &c.
Patent GB-1334929-A (GB)
Title: Process for the manufacutre of adducts of maleic anhydride and liquid low molecular butadiene polymers
IPC: C08C19/28
Filed: 1971-04-19
Abstract: 1334929 Maleic anhydride-polymer adducts CHEMISCHE WERKE HULS AG 19 April 1971 [19 March 1970] 24492/71 Heading C3P Adducts of maleic anhydride with a liquid polybutadiene or liquid butadiene copolymer, said polymer or copolymer having a viscosity of 100-500,000 cP. at 20 C., are prepared by warming the reactants together in the presence of a complex-forming agent, e.g. EDTA or its disodium salt, nitrilotriacetic acid, diacetyl dioxime or acetylacetone. A copper compound may also be present, e.g. copper naphthenate.
Patent GB-409976-A (GB)
Title: Improvements in liquid elevators for gas meters of the constant level type
IPC: G01F3/30
Filed: 1933-09-04
Abstract: 409,976. Gas meters. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. Sept. 4, 1933, Nos. 24502, 24503, and 24504. Convention dates, Sept. 7, 1932, Oct. 29, 1932, and Feb. 18, 1933. [Class 54.] In a wet gas meter of the type in which a drum 7, Fig. 3, revolves in a reservoir 9 containing liquid maintained at a constant level by means of a bucket wheel 1 dipping into a reserve well 8, the bucket wheel is driven by the engagement of pins, teeth, or apertures 4 at its periphery with an equal number of apertures, teeth, or pins 6 on the drum. The shaft on which the bucket-wheel is mounted may have its axis inclined or parallel to that of the meter drum. These axes if inclined need not intersect and either or neither axis may be horizontal. The bucket wheel may carry a finger or fork 14 driving through worm gearing 11, 12 the recording mechanism 10<a> which is arranged in or on a casing 11<a> forming on the front of the meter. Fig. 8 shows a modified construction in which a shaft 3 secured to the front wall of the liquid reservoir carries a bucket-wheel 1 formed at its rim with notches 24 engaging cogs 23 on an annular wall 22 rigid with the drum.
Patent GB-1200995-A (GB)
Title: Composite fastener
Inventor: TINNERMAN GEORGE AUGUST
IPC: F16B39/28
Filed: 1968-05-22
Abstract: 1,200,995. Two-part nuts. G. E. TINNERMAN. 22 May, 1968, No. 24504/68. Heading F2H. A composite nut comprises upper and lower portions 3, 4 formed of synthetic resinous plastics material having a stud engaging opening 2 and a separate sheet metal nut element 7 which is adapted to be disposed in a cavity 6 formed between the upper and lower portions and closed on at least two opposite sides, the nut element also having a stud engaging opening 8 which when in position aligns with the opening 2. The nut element has edges which engage the sides 9 of the cavity to prevent relative rotation. The threads 5 of the nut portions 3, 4 are of reduced depth to ensure a tight and secure engagement of the nut on a stud.
Patent GB-247526-A (GB)
Abstract: 247,526. Roth, E. Feb. 16, 1925, [Convention date]. Addition to 242,312. Mills and apparatus.-In a modification of the disintegrating-apparatus described in the parent Specification, the oppositely-rotating hollow cones are provided on their inner surfaces with annular or circular ribs in addition to the radial ribs. The Specification as open to inspection under Sect. 91 (3) (a) states that the circular ribs are considerablv flatter than the radial ribs. This subject-matter does not appear in the Specification as accepted.
Patent GB-1065625-A (GB)
Title: Electrodeposition of nickel
Inventor: WATSON SYDNEY ALEC
IPC: C25D5/18
Filed: 1965-06-11
Abstract: Nickel is electrodeposited from an all-chloride plating solution using an alternating current at a frequency of at least 100 cycles/sec e.g. a frequency of 400-500 cycles/sec, the deplating part of the cycle being a fraction of the plating part of the cycle, e.g. the deplating part of the cycle may be 10-60% of the plating part of the cycle.  The current may have a square waveform.
Patent GB-617123-A (GB)
Title: Improvements relating to sharpening devices for safety razor blades
IPC: B24D15/08
Filed: 1946-08-20
Abstract: 617,123. Razor blade sharpeners. VISSER, H. Aug. 20, 1946, No. 24848. Convention date, Dec. 17, 1945. [Class 60] A sharpening device for a safety razor blade 9 comprising a member 4 slidable along a guideway-the central raised portion of a hone holder 3-this member 4 being provided with a handle 6 and with pins 5 or similar means for placing a blade 9 on the said member, and two grinding surfaces 8 arranged on either side of and parallel to the guideway, is characterised by two parallel fixed pressure members 11 adapted uniformly to press the edges of a blade 9 placed on the slidable member 4 against the grinding surfaces 8 over the entire length of the blade. A box-shaped holder 1 holds the grinding surfaces 8 and the pressure members 11 are arranged in a slotted cover 2 fitting over the holder 1.
Patent GB-1161362-A (GB)
Title: Carpet Construction
Inventor: KRUCE BENJAMIN ANTHONY
IPC: A47L23/24
Filed: 1966-09-20
Abstract: 1,161,362. Laminates. B. A. KRUCE. 20 Sept., 1966 [29 Sept., 1965], No. 24873/68. Divided out of 1,161,361. Heading B5N. The description is substantially identical with that of the Specification 1,161,361, but the claims are directed to a carpet tile 75 comprising an upper layer of elongate elements of rubbery base material laid side by side and having filamentary cords embedded therein, the upper end portions of the cords projecting upwardly from the base material to form a pile, and the bottom surfaces of the elements being secured by an adhesive to a woven backing sheet.