baber/WOPTO huggingface dataset:
Patent GB-894471-A (GB)
Title: Self engaging couplings
Inventor: FLETCHER STEPHEN BALDWIN DUNWI
IPC: F16L37/23
Filed: 1959-09-01
Abstract: 894,471. Stud and socket fastenings. NUCLEAR POWER PLANT CO. Ltd., and AGIP NUCLEAR. Aug. 22, 1960 [Sept. 1, 1959], No. 29799/59. Class 44. [Also in Group XL(a)] A self-engaging coupling for joining two bodies which in use are subjected to a force due to fluid pressure tending to separate the bodies consists of members housed in one body which are displaced into recesses in the other body to interlock the bodies, means which, during an initial condition when the force is small displaces at least some of the members into their recesses so as to interlock the bodies, and means which when the force is restored transmit it to the other or to all the members to lock them in their recesses, the first-mentioned means being incapable of releasing the members while the force acts. Fig. 1 shows, at the left, an unlocked plug. While the force is still small springs 15 force down a ring 9 carrying wedges 8 which move outwards balls 5a into recesses in pipe 1; the force is then restored, e.g. by reducing pressure above the plug, and lifts the body 2 of the plug so that locking ring 4 moves the remaining balls and locks all the balls in place, as shown at the right pf Fig. 1. The plug is removed by removing or balancing the pressure in pipe 1 and lifting the rods 12; a lost motion coupling 16 lifts ball ring 7 to unlock the balls.
Patent GB-1504380-A (GB)
Title: Rotary fluid machine
IPC: F01C1/20
Filed: 1975-07-16
Abstract: 1504380 Rotary positive-displacement fluidmachines R D HANSON and J F GORDON [trading as GORDON TORQUER Ltd] 16 July 1975 [1 Aug 1974] 29832/75 Heading F1F A pump or motor of the rotary-gate type has a main rotor comprising a plate 28 with pistons 32, 33, 34 fixed thereto and extending into an annular chamber 19 in a housing block 12, the chamber being intersected by a gate rotor 44 with a recess 50 to allow the pistons to pass and located between inlet and outlet ports 42, 43. To reduce back pressure the outlet port may be extended circumferentially of the chamber 19, Fig. 6 (not shown). The gate and main rotors are inter-connected by e.g. gears 52, 53, so as to rotate synchronously with each other.
Patent GB-1268879-A (GB)
Title: Light sensitive integrated circuits
Inventor: SPENCE HILTON WAYNE
IPC: H01L21/00
Filed: 1969-06-12
Abstract: 1,268,879. Pulse modulation circuits; transistor multivibrators. TEXAS INSTRUMENTS Inc. 12 June, 1969 [5 July, 1968], No. 29850/69. Headings H3T and H4L. [Also in Divisions G1 and H1] A semi-conductor integrated circuit comprises a multivibrator having a pair of switching transistors and a photo-diode connected to one of the transistors to control the on/off cycle, the arrangement being such as to produce an output signal the frequency of which is determined by the intensity of the light impinging on the diode. In the circuit shown when transistor 34 is conducting a capacitor 26 charges rapidly from a 4-diode stabilized source 18-21 through the base-collector path of transistor 28 and the saturated transistor 34. Meanwhile, a photodiode previously charged in like manner, discharges due to the incident light (Figs. 2, 3 and 4, not shown) until its voltage is insufficient to maintain transistors 22-32 non-conductive whereupon the circuit regeneratively changes state and a new half-cycle is timed by the discharge of capacitor 26 through resistor 24. The circuit may be in integrated form (Figs. 6 and 7, not shown).
Patent GB-395915-A (GB)
Title: Improvements in pantographic devices
IPC: B43L13/10
Filed: 1932-10-26
Abstract: 395,915. Pantographic apparatus. FROHNE, G., 2, Asperstrasse, Sch÷tmar, Lippe, Germany. Oct. 26, 1932, No. 30044. Convention date, Oct. 26, 1931. [Class 97 (iii).] An adjustable pantograph for copying small patterns for articles of clothing on variable enlarged scales comprises four arms a, a<1>, journalled together to form a parallelogram and a pair of arms b journalled to two of the arms a<1> to form a smaller parallelogram geometrically similar to and lying within the first parallelogram, one of the parallelograms being adjustable in size and graduated to indicate directly the setting for a required dimension (e.g. the chest width) of the pattern desired. In the form shown the smaller parallelogram is adjustable by means of co-operating sets of holes c in the arms a<1>, b. Alternatively the larger parallelogram may be adjusted by means of sets of holes in the arms a, a<1>, or the arms are formed of flexible but stiff metal strips, which may be wound up in, or unwound from, casings. The joints e, f are provided with pins and the joint g with a vertically slidable pin spring urged away from the drawing surface.
Patent GB-1421416-A (GB)
Title: Candle  holder
IPC: F21V35/00
Filed: 1973-06-25
Abstract: 1421416 Candle holders D L LEADBEATER 25 June 1973 30097/73 Heading F4T A candle C is supported by a carrier 3 in a tubular metal holder 1 wherein a spring 4 urges the candle towards an open upper end of the holder at which end a downturned rim 6, at the inner periphery of an inwardly directed lip 5, defines with an adjacent part of the tube 1 an annular cavity capable of accommodating, and hence preventing loss of, molten wax from within tube 1 should the holder be displaced from its normal vertical position. Spring 4 urges the upper end of the candle against the tapered upper end portion of tube 1 and rim 6 is disposed above the level of molten wax. The outer surface of a tin-plate or aluminium tube 1 may be polished or decorated and its lower end is closed by a removable cap, which may be formed by a standard candle stick.
Patent GB-897463-A (GB)
Title: Electroplating bright gold
Inventor: RINKER EDWIN CORNELL
IPC: C25D3/48
Filed: 1959-09-03
Abstract: 897,463. Gold-plating solutions. SEL-REX CORPORATION. Sept. 3, 1959, No. 30138/59. Addition to 851,973. Class 41. Gold-plating solutions contain a weak stable organic acid partly neutralized to the range pH 3 to 6, and gold cyanide, or a double cyanide with an alkali metal. Aliphatic hydroxy mono-carboxylic, dicarboxylic acids, unsaturated or aromatic acids which are soluble in water may be used, e.g. citric, tartaric, oxalic, fumaric, lactic, hydroxy-propionic, acrylic, crotonic, or resorcyclic acid may be used, and partly neutralized to pH 3 to 6 with alkali bases or ammonia. In examples, the acid content is 10 to 150 g. per litre, and gold cyanide 1 to 30 g. per litre.
Patent GB-683701-A (GB)
Title: An electric smelter for producing porcelain
IPC: C03B5/027
Filed: 1949-11-29
Abstract: 683,701. Electric furnace for porcelain enamel. THORNTON, A A. (Ferro Enamel Corporation). Nov. 29, 1949, No. 30570/49. Class 39(iii) [Also in Group XXIII] A smelter for the continuous production of porcelain enamel comprises separate melting and fining chambers 20, 21 connected by separate passages 29, 23 for the hot gases and molten material arranged respectively above and below the normal bath level, the material being heated by current passed therethrough between horizontal electrodes 24 in both chambers. One electrode is arranged on each of two opposite sides of the fining chamber, and two electrodes on two opposite sides of the melting chamber, the two electrodes on the same side of the melting chamber being of the same polarity. The raw material is pushed by a screw feeder 26 on to the top of material floating in the melting chamber 20 which is wider than the fining chamber and has a flue outlet 28. The electrodes 24 are rectangular plates of molybdenum, tungsten or nickel, are wholly submerged and have horizontal water-cooled supply conductors passing through the furnace wall. Hot gases flow from the fining chamber 21 through the passage 29 in a refractory bridge wall 22 into the melting chamber. The fining chamber is heated sufficiently to retain the enamel molten and has an overflow outlet- 27 and a spout 7 for draining the smelter at the end of an operation. The smelter is flooded with carbon dioxide during emptying to prevent oxidation of the electrodes. The porcelain comprises a sodium borosilicate glass matrix with a uniformly dispersed spacifier e.g. zirconium oxide and contains fluorine, very little of which is lost during smelting (see Group XXIII). Current supply to the melting and refining chambers is from separate power circuits, with transformers having variable voltage control through saturable core reactors comprising a series of A.C. windings on a core with D.C. windings, so that if the small D.C. current is increased the A.C. voltage to the load is increased. The output voltage is controlled by the bath temperature or by power input as indicated by a controlling pyrometer. The current to the fining chamber may be from a single phase transformer with variable voltage taps.
Patent GB-617672-A (GB)
Title: Improvements in mercury switches for impulse generators for electric fences
IPC: H01H29/20
Filed: 1946-10-14
Abstract: 617,672. Mercury switches; electromagnetic interrupters. DANSK ELEKTROHEGN VED MOGENS PLUM OG S. HUSTED-ANDERSEN. Oct. 14, 1946, No. 30600. Convention date, Oct. 8, 1943. [Class 38 (v)] A mercury switch for an impulse generating circuit for electric fences, has two of its contacts 3, 4 spaced so that the distance between them is greater than the length of the mercury drop 2 when at rest, but is shorter than the length of the drop when it is in motion. In the circuit shown, a spring 21 normally depresses the lefthand end of the tube 1, which is pivoted at 14, on to an abutment 22. The mercury then bridges contacts 5 and 6 to complete a driver circuit through a magnet coil 16, which by attracting an armature 15 tilts the tube causing the mercury drop to run to the right-hand end of the tube. As it does so, the drop lengthens and momentarily bridges contacts 3, 4 to energize the primary winding 7 of a transformer 8, so inducing an impulse into the secondary winding 9 which is connected to the fence. The driver circuit is now interrupted, so that the spring returns the tube at a rate controlled initially by an orifice 20 in the cylinder 18 of a dashpot assembly and finally by the slots 19 which are uncovered by the piston 17 on the last part of its travel. Assistance in elongating the mercury drop may be obtained by narrowing the tube to the left of contact 3, or by displacing contact pins 3 and 5 slightly from the vertical plane of the tube.
Patent GB-387773-A (GB)
Title: Improvements relating to stand pipes, hydrants and the like
IPC: F16L37/252
Filed: 1931-11-04
Abstract: 387,773. Pipe couplings. TAYLOR, DUNFORD, & CO., Ltd., J., Dunford House, Dean Street, and KNOWLES, H., 100, Hugh Gardens, Benwell, both in Newcastle-on- Tyne. Nov. 4, 1931, No. 30608. [Class 99 (i).] A coupling for stand pipes, hydrants, &c. comprises a female member a, Fig. 4, having a rotary valve h coacting with a fixed disc e, and a male member r, Fig. 3, secured in position by bayonet joints and provided with a bridge t having an aperture to engage the valve spindle, the arrangement being such that the act of coupling opens the valve to allow passage of water, air, steam, or other fluid. The valve spindle j and the opening through which it passes may be threaded so that the valve has axial movement also.
Patent GB-243904-A (GB)
Title: Detachable lid fitting for pots and jars for table delicacies and the like
IPC: A47J45/07
Filed: 1924-12-22
Abstract: 243,904. Williams, A. H. Dec. 22, 1924. External fittings; handles. -Consists of a detachable lidfitting for application to preserve or condiment jars &c. after removal of the usual paper cover. A flanged rim fits over the end of the jar and is secured thereto by pinching screws 4, which take either into the string groove as shown or engage beneath the mouth flange. The screws work in bosses 6 which serve also as pivots for the bow handle 5. The lid 3 seats on a horizontal part 2 of the rim.
Patent GB-1001929-A (GB)
Title: Improvements in and relating to pressure reservoirs
IPC: F15B1/10
Filed: 1964-08-04
Abstract: 1,001,929. Hydraulic accumulators. ROBERT BOSCH G.m.b.H. Aug. 4, 1964 [July 23, 1963], No. 30751/64. Heading F1P. A hydraulic accumulator comprises a twopart casing 1, 2 defining a gas chamber 12 and a pressure liquid chamber 13 separated by a flexible partition 11 adopted to bear progressively against the interior of the casing 2 upon emptying of the chamber 13 to thereby close communication between the chamber 13 and at least two consumer outlet openings 20 one of which is situated so as to remain open until the accumulator is fully discharged. Two openings 20 are shown and contain valve housings 21, 22 each having slidable therein a valve member 24 urged towards an open position by a spring 25. The flexible partition 11 is secured between flanges 6, 7 on the casing 1, 2 by a ring 8 having a left and a right hand thread. The centre of the partition 11 is either supported by a bellows secured to a valved gas inlet fitting 5, or as shown, by integral strips 14.
Patent GB-1462340-A (GB)
Title: Working up synthesis solutions obtained in production of hydra zine
IPC: C01B21/16
Filed: 1975-07-23
Abstract: 1462340 Hydrazine BAYER AG 23 July 1975 [27 July 1974] 30789/75 Heading C1A An aqueous synthesis solution obtained in the production of hydrazine and containing a hydrazone and/or a ketazine, and optionally a ketone and other organic and inorganic compounds arising in its production is worked up by a process comprising extracting the hydrazone and/or ketazine and if present the ketone with a substantially water-immiscible organic solvent; distilling off ammonia together with any other readily volatile compound from the extract; separating the hydrazone and/or ketazine from the organic solvent; and converting the hydrazone and/or ketazine into hydrazine hydrate or a hydrazinium salt and a ketone by treatment with water and/or an acid, optionally under pressure. A synthesis solution containing free hydrazine may be completely converted into one containing hydrazone and/or a ketazine by the addition of a water-soluble ketone. Dimethyl hydrazone, dimethyl ketazine and acetone are the preferred hydrazone, ketazine and ketone respectively, and the preferred organic solvent may be a chlorinated hydrocarbon with 1 to 3 carbon atoms and 1 to 5 chlorine atoms, e.g. trichloromethane, dichloromethane or dichloroethane, benzene, or an amino, halo, cyano, nitro, C 1  to C 4  alkyl, alkoxy or carbalkoxy derivative of benzene, e.g. aniline, 4-benzonitrile, toluene, nitrobenzene, 1,2-dichlorobenzene, 2-nitrotoluene, 2- methoxy aniline, 2-carbomethoxy aniline, 1- chloro-2-methyl-3-aminobenzene or may be 2- chloro aniline or 3-chloro aniline, which are preferred. Alternatively the organic solvent may be a higher alcohol with from 5 to 18 carbon atoms or alcohol mixture, specified alcohols including 3-methyl hexanol, 5-methyl hexanol, 2-ethyl hexanol, n-octanol, 3,5,5-trimethyl hexanol, a dimethyl hexanol, 4-ethyl octanol, tridecanol, an i-tridecanol, i-octadecanol, n-nonanol, ndecanol, and n-dodecanol. Following the removal of ammonia, the hydrazone and/or ketazine may be separated from the organic solvent by re-extraction with water or water containing free hydrazine; alternatively the hydrazone and/or ketazine may be hydrolysed by the addition of water to form hydrazine and/or hydrazone, ketone formed being simultaneously distilled off, and the solution containing free hydrazine and/or hydrazone and organic solvent reextracted with water or the hydrazine and/or hydrazone separated off from this solution by distillation. The extract freed from ammonia may be converted into a salt of hydrazine and a ketone by the addition of an inorganic or organic aqueous acid, e.g. hydrochloric, hydrobromic, sulphuric, acetic or oxalic acid.
Patent GB-678508-A (GB)
Title: Preparation of crystalline benzylpenicillinic acid-diisopropyl etherate
IPC: C07D499/22
Filed: 1948-11-26
Abstract: The crystalline complex of benzylpenicillin (free acid) with di-isopropyl ether is prepared by reacting the components to form a solution and then crystallizing out.  Benzylpenicillin may thus be separated from the other penicillins which do not form such a complex.  Preferably the sodium or other alkali metal salt of benzylpenicillin is dissolved in water, a mineral acid added (e.g. hydrochloric) to pH 2-6, di-isopropyl ether added and the layers separated prior to crystallization.  Alternatively the benzylpenicillin may first be extracted into diethyl ether, chloroform or other solvent miscible with di-isopropyl ether. When extracting from aqueous solution, the benzylpenicillin (acid form) may be salted out with sodium chloride.  The crystalline complex may be converted into the alkali or alkaline earth metal salts of benzylpenicillin by treatment with the corresponding hydroxide.  In the examples there are used as starting materials (1) sodium benzylpenicillin, (2) the same with citrate buffer, (3) with ammonium n-heptylpenicillin, (4) with penicillin degradation products, and (5) the N-ethylpiperidine salt of benzylpenicillin containing also the salt of 2-pentenylpenicillin.
Patent GB-306176-A (GB)
Title: Improvements relating to the driving of the drums of sanding machines
IPC: B24B47/10
Filed: 1927-11-16
Abstract: 306,176. White & Sons, Ltd., T., and Lister, S. Nov. 16, 1927. Driving devices; spindle mountings. - The drum of a sanding-machine, which drum is reciprocable axially, is driven by an electric motor contained within the drum. the rotor e of the motor being secured within the drum b, and the stator d being secured on a, non-rotating spindle a upon which the drum is rotatably supported by ball &c. bearings c; the spindle may be bored for the lead-in wires f to the motor. Two or more stators and rotors may be provided within the drum. The drum is reciprocated axially with the spindle a by an eccentric pin g, driven from the drum by gearing h and engaging a slotted lever i pivoted to a fixed part of the machine; the lever is held out of engagement with the pin when reciprocation is not required.
Patent GB-324634-A (GB)
Title: An improved electric switch for controlling signalling apparatus
IPC: B60Q1/42
Filed: 1928-10-24
Abstract: 324,634. Mill, A. P. Oct. 24, 1928. Motor-road-vehicle signals.-An electric switch for a vehicle steering wheel mounted on an inclined axis consists of a switch arm movable manually to close a circuit to operate a turning signal and to displace a ball or weight which, on rotation of the steering wheel, moves away from the switch arm and, on restoration of the wheel, strikes against the arm which is thereby moved to open the signal circuit. In the construction shown a switch arm g, carried by a pivot pin h arranged parallel with a steering post, has two opposed projections j. A contact plate m and a runway c containing a ball d is provided at each side of the arm g, the arrangement being such that on movement of the arm g to engage a contact plate m to close the signal circuit, one ball d is displaced by the corresponding projection j. On rotation of the steering wheel the displaced ball falls into an extension f of the runway c so that on restoration of the steering wheel the ball d falls and strikes the projection j thereby returning the switch arm g to its central position to open the signal circuit. The arm g is held in the circuit closing position and supporting a ball by a clamping washer on the pivot h. A spring plunger or other means may be provided to hold the switch arm in its central position. The balls may be arranged to travel within the hollow rim of a steering wheel the switch arm being carried on one of the spokes of the wheel or between two adjacent spokes. The balls may be made of steel, phosphor bronze or a hard metal shell filled with lead or mercury.
Patent GB-1011142-A (GB)
Title: Improvements in and relating to analogue function generators
Inventor: SUTTON ALAN JOHN
IPC: G06G7/28
Filed: 1963-08-06
Abstract: 1,011,142. Electric analogue calculating. SOLARTON ELECTRONIC GROUP Ltd. Aug. 4, 1964 [Aug. 6, 1963], No. 31042/63. Heading G4G. [Also in Division H3] A circuit for use in generating analogue function comprises two input terminals 10, 11 (Fig. 1) connected through associated input resistors 14, 15 to a junction point 16. The point is connected to a source of reference potential, e.g. earth 22, through a first pair of semi-conductor diodes 17, 18 connected in series with their cathodes together, the cathodes being connected to a first output terminal 12, and through a third resistor 20 to a source of negative potential 28. The junction point 16 is also connected to the reference potential 22 through a second pair of diodes 23, 24 connected in series with their anodes together, these anodes being connected to a second output terminal 13 and through a fourth resistor 26 to a source of positive potential 29. The circuit is used to provide one linear part in a function generator providing a non-linear function by broken linear synthesis. Signals x and y are supplied to the input terminals 10 and 11 so that their sum appears at the point 16. The anode of the diode 17 is normally biased negative, but the diode will conduct when x/R 2  + y/R 3  exceeds V/R 1 , where R 1 , R 2 , R 3  are the resistances 20, 14, 15 respectively and V is the negative bias obtained from the potential divider 21. This condition determines a break point and the output at 12, after the break point has been reached, will follow the potential x + y. For negative values of x + y, an output will be obtained at 13 after the corresponding negative break point has been reached. To establish a broken linear function, several similar circuits are used, connected so that all the terminals 12 and 13 are respectively connected to the summing junctions of two operational amplifiers, and all other corresponding terminals are connected in parallel. The broken linear outputs are derived from the operational amplifiers. The respective break points for a given linear section are determined by the values of the resistors 14, 15, 20 and the voltage set by the potential divider 21, while the slope of the section is determined by the resistors 14, 15 and the shunt resistance of the first operational amplifier. A quarter square multiplier employing function generators of this type for generating square functions may be as shown in Fig. 3. Two generators 37, 38 each comprising a plurality of circuits as described with respect to Fig. 1 are used, one being fed with signals x and y, the other x and - y. The outputs are so connected to the operational amplifiers 39, 41, which have their gains appropriately adjusted, as to provide full four quadrant operation. The final output is “(x + y)<SP>2</SP> - “(xy)<SP>2</SP> = xy-
Patent GB-1472425-A (GB)
Title: Device for musicians
IPC: G10G1/02
Filed: 1975-07-03
Abstract: 1472425 Note and chord indicator STAYLOR 3 July 1975 [12 July 1974] 31043/74 Heading G5X A casing 13, Fig. 1 is provided with an external scale of musical notations (shown in phantom) and contains a drum 17 which is rotatable and axially movable to position a scale of musical notations carried on the surface of the drum relative to the external scale. A selected part of the scale on the drum may be viewed through a window 22 in the casing adjacent two external scales on the casing, Fig. 2 (not shown) which represent (24) a keyboard with indications of the notes, and (25) a scale of chords in the usual progression. The scale on the drum surface Fig. 3, may be divided into longitudinal sections having an indicator 30 at one end which is positioned by axial movement of the drum to align with a note on the external scale (24) appropriate to the required chord, e.g. C for chord C7. The drum is also rotated by knob 21 to position numeral "7" in the window, and the remaining indicators 30 then visible indicate the notes comprising that chord. The indicator can also be used for transposing from one key to another. For transposing notes the scale 29 on the drum is axially moved so that the original key on scale 29 is aligned with the transposed key on the external scale (24) so that corresponding notes can be read off. Chords may also be transposed using scales 28 and (25) in a similar manner.