baber/WOPTO huggingface dataset:
Patent GB-1513785-A (GB)
Title: Electrical focal plane shutters
IPC: G03B9/58
Filed: 1975-05-23
Abstract: 1513785 Camera shutters OLYMPUS OPTICAL CO Ltd 23 May 1975 [6 June 1974 (3)] 22444/75 Heading G2A A focal plane shutter comprises an opening blind gear 2 having a first locking detent 10, and a closing blind gear 3 having second and preferably third locking detents 16 and 27, detent 16 being controllable by an electromagnet 18; the shutter including means for preventing release if the electromagnet's power source fails. Preferably, the shutter also includes (a) means for providing a fixed, mechanical, high speed shutter action to avoid the situation in which at speeds of 1/1000 to 1/2000 seconds almost instantaneous de-energization of the electromagnet 18 causes the second blind to run simultaneously with the first (b) means for providing a fixed mechanically determined speed e.g. 1/30 or 1/60 seconds e.g. for flash synchronization purposes. Normal operation. Operation of a release lever 14 releases detent 10 so that gear 2 operates the opening blind, a cam 29 on gear 2 also shifting a rod 28b to render detent 27 inoperative. After an electronically determined period, electromagnet 16 is de-energized to release detent 16 so that gear 3 operates the closing blind. Towards the end of the movement of gear 2 a projection 8 thereon strikes a brake arm 36b to brake the opening blind drum, and cam 29 moves rod 28b back so that detent 27 stops gear 3. If the electromagnet 18 fails, it releases detent 16 and a rod 35 thereon moves an arm 33 into a position in which it blocks movement of detent 10 and prevents release of the opening blind. If the electronically timed period is excessively short, i.e. if electromagnet 18 releases detent 16 very early, then closing blind gear 3 will still be held by detent 27 until cam 29 on gear 2 shifts rod 28b to release detent 27. This provides a short mechanically determined exposure period. A fixed mechanically determined speed e.g. for flash synch is obtained by rotating a disc 24 so that it moves a lever portion 22b into engagement with a cut-away 24b. This pivots lever 22 whereby a rod 23 thereon holds detent 16 in its locking position. Operation of release 14 releases detent 10 so that gear 2 operates the opening blind and unlocks detent 27 as in "normal operation". When projection 8 of gear 2 strikes brake arm 36b it not only brakes the opening blind drum but also pivots lever 22 which via rod 23 releases detent 16 to close the shutter. Electromagnet 18 is controlled by the circuit shown in Fig. 8. An operational amplifier 45 is connected for automatic operation to a capacitor 59 charged through a photo-cell 58 and for manual operation to a capacitor 61 charged through variable resistors 50, 60. A differential amplifier 46 compares the output of amplifier 45 with a reference potential (b) to control electromagnet 18. A differential amplifier 47 keeps electromagnet 18 de-energized if the supply voltage falls. Resistor 57 is set according to film speed for  automatic operation.
Patent GB-727014-A (GB)
Title: Loading machine for minerals and other mined products
IPC: E21D9/12
Filed: 1950-09-12
Abstract: 727,014. Conveyers. DEMAG AKT.-GES. Sept. 12, 1950 [Oct. 1, 1948], No. 22465/50. Class 78(1). A machine for feeding mined material, e.g. to a conveyer, is operable as a separate unit and includes a chassis carried on wheels or endless tracks driven by driving means mounted as a complete unit on the chassis and a series of rake arms carried by a rake-bar at the front of the chassis and driven through gearing to cause each arm to follow a closed circular path while retaining its orientation, so as to move the material laterally in steps. In one form, Fig. 4, a frame 8, supported by wheels (not shown), and a skid 11, is coupled by a bar 55 to a conveyer 3 and carries a second frame 14 which is pivotally mounted on a shaft 13 carried by frame 8 and which in turn carries the rake-bar 17 through the medium of two cranks 16 rotated in unison by a motor 15. The height of the rake arms 18 above the ground is adjusted by a screw (not shown) carrying the skid 11, and by a pair of hand operated screws 20 operating between the frames 14 and 8. The latter adjustment is augmented by a pair of piston and cylinder actuators 21 connected between the frames for rapid movements prior to shifting the apparatus to a new position. Independent motors drive the wheels to obtain power steering. The conveyer 3 can be towed by the apparatus through the connection 55. In a modified form, Fig. 6, the screws 20 are incorporated in the cylinders 21 to restrict their downward movement with respect to their pistons. Also frame 8 is replaced by two laterally-spaced tubes 30 at the rear end of each of which is a motor 31 driving each of the wheels 9 through a cardan shaft 32 within tube 30 and worm gearing 33, 34. In a further modification, Fig. 9, both the rake and the wheels 9 are driven by a single motor 40, steering being obtained by means of a gear-box 43 which splits the drive from a shaft 41 into two drives applied to the shafts 32, each of the latter drives having a reversing device with a neutral position. The gear-box may take two forms. In Fig. 11 the rotary motion of shaft 41 is converted to two intermittent motions through the pawls 45 and reversible ratchet-wheels 46, the pawls 45 being selectively engaged or disengaged by means of suitable hand levers 47 operating cams 48. In another form (not shown) the drive from shaft 41 or from a sprocket-chain is split by bevel gears to drive the shafts 32, the bevel gearing being reversed or disengaged by dog clutches. A guide-plate 60, Fig. 4, pivotally connected to the end of bar 17 adjacent the conveyer and slidable in a boss 61 on the frame, guides the material on to the conveyer. Instead of a sliding plate, two plates having a toggle link connection may be used. Specification 512,628 is referred to.
Patent GB-958143-A (GB)
Title: Improvements in or relating to displacement compressors
IPC: F04C29/00
Filed: 1961-06-21
Abstract: 958,143. Roots' blowers. W. GLAMANN. June 21, 1961 [July 16, 1960], No. 22479/61. Addition to 871,588. Heading F1F. In a Roots'-type rotary compressor according to the parent Specification, the surface portions of the rotors 2, 21 that contact the controlling surfaces of the timing control devices 3, 31 extend from the peak to the driving pitch circle. The non-controlling surface portions of the timing control devices are shaped (Fig. 2 not shown) so that compressed gases in recesses 61 of the casing are not trapped before the beginning of the next compression; alternatively the outlet opening of the casing (Fig. 13 not shown) or the casing cover may be modified for this purpose, or a groove may be formed in the periphery of each device (Figs. 11, 12 not shown), or conduits (Figs. 9, 10 not shown) may be provided from the casing recesses to the outlet side of the casing. Profiles of the rotors and timing control devices are given. Axially acting packing rings for the working chambers of the compressor are incorporated (Fig. 15 not shown). An initial pressure and dirt centrifuge may clean the fluid and impart an initial pressure to it as it enters the casing (Fig. 15 not shown). Counterweights balancing the timing control device 3, 3<SP>1</SP> comprise cylindrical bodies partly of heavy metal e.g. iron, and partly of light metal, e.g. magnesium, so that eddies are not set up during rotation. The apparatus is stated to produce less noise.
Patent GB-1352377-A (GB)
Title: Method of producing citric acid
IPC: C12P7/48
Filed: 1971-04-19
Abstract: 1352377 Citric acid TAKEDA YAKUHIN KOGYO KK 19 April 1971 [24 Feb 1970] 22497/71 Heading C2C Citric acid is prepared by inoculating a citric acid accumulating yeast of genus Candida in a medium containing phosphorus and a hydrocarbon in a weight ratio of 0À1 x 10<SP>-3</SP>/l to 2 x 10<SP>-3</SP>/l. Strains and mutants of genus Candida capable of utilizing hydrocarbon may be Candida tropicalis, lipolytica, albicans, rugosa, guilliermondii, brumptii, chalmersi, guilliermondii var. membranaefaciens, paropsilosis var. tokyoensis and pulcherrima and the hydrocarbons may be n-alkanes or mixtures thereof and heavy gas oil or kerosene. The sources of phosphorus may be inorganic phosphoric compounds, e.g. orthor-, meta, and polyphosphoric acids or anhydrides, and metal or ammonium salts thereof; organic phosphoric compounds such as ribonucleic or phytic acids or alkali metal salts or esters, or an ester of sugar or sugar alcohol; dried yeast, yeast extract, casein, meat extract, fish meal, defatted soyabean meal, corn steep liquor, corn infusion, distillers waste and ribonucleic acid. The incubation temperature is from 20 to 35 C. at a pH from 2 to 7.
Patent GB-725095-A (GB)
Title: An improved hair waving comb
IPC: A45D20/52
Filed: 1953-08-17
Abstract: 725,095. Hair waving appliances; combs. MICHELE, F. Aug. 17, 1953 [June 19, 1953], No. 22566/53. Class 131. A hair waving comb having heated teeth comprises a tubular back member connectable at one end to a source of hot air and having at least one vent hole at the other end, the bases of the teeth being mounted within the tubular back. As shown, the tubular back 1. has a vent hole 2 at the forward end and a longitudinal slot 3 through which teeth 4 protrude, the bases of the teeth being welded to the inner wall of the tubular back. A hand grip 9 of wood &c. is secured round a tubular member 6 connectable to a supply of hot air such as the supply tube of an electric hair dryer and apertured at 8 for the escape of excess hot air which is deflected from the scalp by a disc 5 and a collar 14 of heat-insulating material. A shroud 11 of heat insulating material having a vent hole 12 and slot 13, registering with the vent hole 2 and slot 3 respectively, confines the heating to the comb teeth.
Patent GB-789756-A (GB)
Title: Improvements in driving arrangements for continuous rod cigarette-making machines
IPC: A24C5/31
Filed: 1955-08-05
Abstract: 789,756. Cigarette-making machines. MOLINS MACHINE CO., Ltd., and MOLINS, D. W. July 31, 1956 [Aug. 5, 1955], No. 22628/55. Class 130. A two-speed gear 9 between an electric motor 4 and a gear-box 12 distributing drive to the various parts of a continuous-rod machine has a high speed corresponding to normal machine speed and a low speed of between 30 and 40 per cent of the high speed to allow checking of machine operation at starting. The gear 9, which is of epicyclic type using oil-operated clutches, is mounted to the rear of the machine and is operated by a starting handle 3 at the machine front via linkage 16, 20. Specification 539,446 is referred to.
Patent GB-245187-A (GB)
Title: Means for securing propellers or wheels on their shafts
IPC: B60B27/00
Filed: 1924-09-25
Abstract: 245,187. Rupp, A. Sept. 25, 1924. Compression-spoke wheels; hubs. - Means for securing propellers or wheels to the axles comprise a tubular hub with stepped inner bore which is keyed to the shaft and also locked endwise by a nut on the shaft engaging the step. The hub has an integral flange having radiating ribs adapted to sink into the wooden boss of the propeller or wheel and the flange carries conical driving nuts whilst the boss is finally secured by an end disc and nut on the hub. A tubular hub e is secured to the shaft a by a key and also by the nut b and a disc bearing on an internal shoulder. The nut b is locked by a set-screw r. An integral flange o on the hub e has radial ribs n which bite into the wooden boss of the wheel p and it also carries conical studs m which register with conical holes in the boss. The boss is secured by an end-plate i, cap k, and nut h. The latter is screwed on to the hub e and is locked by a cotter t passing through it and castellations on the hub. When the assembly is complete, the plate i acts as a lock for the screw r. The plate i is keyed to the hub.
Patent GB-915454-A (GB)
Title: Nitrogen mustards
Inventor: OWEN LEONARD NEWTON
IPC: A61K31/13
Filed: 1960-06-28
Abstract: The invention comprises compounds of formula R1.Q.CO.Q1.R in which R1 represents a group (X.CH2CH2)2N-Ar-, X representing a chlorine or bromine atom and Ar representing a p-phenylene group, Q and Q1 each represent an oxygen atom, a sulphur atom or an -NH- group and may be the same or different, and R represents a sugar residue, an aryl group different from R1 or a lower (i.e. 1-4 carbon atom) alkyl group, said aryl or lower alkyl group being substituted by a saltforming group; and their derivatives in which the salt-forming group is converted into a salt or ester. In examples, the sugar residue is D-galactose and 1,2:3,4-di-O-isopropylidene-D-galactose, and the salt forming group carboxyl, phenolic hydroxy, amino and dialkylamino; derivatives obtained are alkyl esters, and salts, for example methiodide, S-benzylthiouronium and picrate salts.  Methods of preparation referred to are the reaction of compounds R1.QH and OCN.R (Q1=NH); of compounds R1.Q.CO.halogen and H2N.R (Q1=NH); of compounds R1.QH and halogen.COOR (Q1=O); of compounds R1.QH and Cl.CO.S.R (Q1=S); and of compounds R.SH and R1.NCO, R1.O.CO.Cl or R1.S.CO.Cl (Q1=S).  p - N,N - Diethylaminophenyl isocyanate hydrochloride is prepared by the action of phosgene on the corresponding aniline.  In the Provisional Specification X represents any halogen atom.  Pharmaceutical compositions comprise one or more of the compounds of the invention dissolved in a compatible fluid carrier, for injection.  Intramuscular and interperitoneal administration are mentioned.  The compounds have anti-tumour activity.
Patent GB-676276-A (GB)
Title: An arrangement for determining the amplitude of an electric wave selected from a complex wave
IPC: G10L19/02
Filed: 1950-09-15
Abstract: 676,276. Telephone transmission systems. STANDARD TELEPHONES & CABLES Ltd. Sept. 15, 1950 [Jan. 21, 1950], No. 22726/50. Class 40 (iv). [Also in Group XXXVI] In an arrangement for determining the amplitude of the harmonics of a variable fundamental # 0  in a complex signal, a signal representing the fundamental frequency controls a series of constant-amplitude sources of oscillations to cause them to produce frequencies F 1 +# 0 , F 2 +2# 0 , ... F n +nf n , where F 1  ... Fn are fixed frequencies. These frequencies are then mixed with the complex signal to produce frequencies F 1  ... F n  having amplitudes proportional to those of the respective harmonics. The arrangement is suitable for use in a system such as that described in Specification 667,196 in which a voice signal is represented in transmission by signals representing the amplitude and frequency of the fundamental, and the amplitudes of the harmonics. As shown, Fig. 1, the fundamental frequency selector 2 feeds a circuit 3 whose output consists of a D.C. voltage proportional to the frequency of the fundamental. This voltage is fed to thermionic reactances 7, 8 ... 9 forming parts of the tuned circuits of the oscillators 11, 12 ... 13 which are thereby caused to emit constant amplitude signals of frequencies F 1 +# 0 , F 2 +2# 0 , ... F n +n# 0 . The signals are mixed with the complex wave in mixers 14, 15 ... 16, the respective harmonics beating with these frequencies to produce frequencies F 1  ... F n  of amplitudes proportional to those of the harmonics. These may be converted to D.C. potentials by detectors 18, 20 ... 22 for feeding to the utilization apparatus 6 which is also fed with the fundamental frequency from the circuit 2. In a modification, Fig. 2 (not shown), the circuit 3 feeds only one thermionic reactance circuit to produce a frequency F+# 0  from which frequencies 2F+2# 0 , ... nF+n# 0  are produced by frequency multiplication for beating with the complex signal. In a further modification, Fig. 3 (not shown), even this thermionic reactance is eliminated by passing the fundamental through a limiter whose output is mixed with an oscillation F to produce the frequency F+f n .
Patent GB-614800-A (GB)
Title: Improvements in or relating to extrusion apparatus
IPC: B29C48/06
Filed: 1946-07-30
Abstract: 614,800. Extrusion apparatus. B. X. PLASTICS, Ltd., and NICHOLAS, D. C. July 30, 1946. No. 22727. [Class 87 (ii)] Extrusion apparatus for making rods, strips, threads, &c., of thermoplastic material, e.g. plasticised polyvinyl chloride, rubber and rubber-like materials, comprises a rotatable feed screw 8 and an extrusion die 11 or 17 integral with or rigidly attached to the feed screw and extending through a cap 4 fitted to the end of a cylinder 2. In Fig. 1 the cap 4 has a conical bore 6 and the shaft of the feed screw is extended to form a conical portion 9, the material passing through the annular space 10 between the portions 9, 6 and through conduits 13 into the bore 14 of the die. The rods, &c., will be twisted as they are drawn out of the die. In a further embodiment, Fig. 2, a central bore 16 is provided through the shaft 8 and die member 17 for the passage of a core or mandrel such as a cable 18 therethrough ; eccentrically of the bore 16 there is an extrusion orifice 19 and thus an extruded thread or strip 20 will. be wound helically upon the cable, the pitch of the winding being adjustable by variation in the speed of either the cable or the die. Any number of extrusion orifices may be provided in the die member so as to produce a number of rods, &c., intertwined togther, and the apparatus may be adapted to provide further extrusions, which may be of different colours, through the stationary cap 4 so as to bond onto the rotating extrusion produced by the die member.
Patent GB-1570581-A (GB)
Title: Preparation of silver halide emulsions
IPC: G03C1/015
Filed: 1978-05-25
Abstract: Process for producing photographic silver halide emulsions which contain silver halide crystals of the twinned type, by stepwise (a) forming silver halide crystals containing at least 90 mol % of iodide in a colloid-dispersing medium, these crystals having predominantly the hexagonal lattice structure, and then chemically sensitising these silver halide crystals containing at least 90 mol % of iodide, (b) mixing an aqueous silver salt solution and an aqueous solution of alkali metal bromide or chloride or ammonium bromide or chloride or mixtures thereof into the dispersing medium containing these silver halide crystals, so that twinned silver halide crystals are formed which contain iodide and the added halide or halides, and (c) adding a silver halide solvent to the dispersing medium and thus initiating a growth of the twinned crystals by Ostwald ripening.
Patent GB-501024-A (GB)
Title: Light weight structural materials and method of manufacturing same
IPC: C04B28/18
Filed: 1937-08-19
Abstract: 501,024. Lime silica compositions. GYPSUM, LIME, and ALABASTINE, CANADA, Ltd. Aug. 19, 1937, No. 22738. Convention date, Aug. 22, 1936. [Classes 22 and 70] [Also in Group III] Porous light-weight structural material consisting of silica particles bonded with calcium silicate is made by a process comprising a crystal-generating stage in which a suspension of silica particles in saturated lime water is heated under steam pressure and an indurating stage in which after removal of the lime water the residue is heated under steam pressure. During the first stage, crystals of Hillebrandite 2CaO.SiO2.H2O are formed and during the indurating stage these are converted into Gyrolite 2CaO.3SiO2.2H2O. The crystalgenerator shown, comprises a cylindrical pressure tank 1 having a conical end provided with a detachable cover for charging and discharging. The other end is fitted with a steam pipe 3. The tank is fitted internally with blades 8 and is adapted to be rotated to keep the silica particles in suspension. After the first stage heating the material is tipped into a mould having a perforated bottom 13 and a detachable liner 14 capable of acting as a filter to release the lime solution. The moulded blocks are then placed in an indurating autoclave, where they are heated for instance at 120 lb. steam pressure for about 8 hours.
Patent GB-792864-A (GB)
Title: Installations for parking vehicles particularly motor vehicles
IPC: E04H6/24
Filed: 1954-08-05
Abstract: 792,864. Mechanical garages. KRANICH, F. Aug. 5, 1954 [Feb. 25, 1954], No. 22758/54. Class 78 (4). Vehicles to be garaged in compartments 207, 207<SP>1</SP> (Fig. 2) disposed on several floors of a building are first carried by a lift 204 or 204<SP>1</SP> to the proper floor and then delivered to a wheeled conveying device such as a carriage 210 or 2101 which carries them to a position adjacent an empty compartment. As illustrated the vehicles are carried by wheeled platforms which are stored, when empty, in the compartments 207 and each carriage 210 comprises two portions 208 (Fig. 5) of which one serves to remove a loaded or unloaded platform from a compartment while the other subsequently delivers an unloaded or loaded platform to the same compartment. Further lifts 205, 2051 serve to remove the vehicles from store. The vehicles may be driven directly on to wheeled platforms in the lifts or the platforms may be removed from the lifts to be loaded. The wheeled platforms are transferred to and from the carriages 210 either by rams 222, 223 (Fig. 5) mounted beneath the carriages or by tilting the floors of the carriage, of the compartments, and of the lifts. The two portions of each wheeled carriage may be separated by a central bogie 215 from which the carriage can be controlled. Alternatively the system may be remotely controlled.
Patent GB-1344383-A (GB)
Title: Monomethyl and dimethyl terephthalate
IPC: C07C69/82
Filed: 1971-04-19
Abstract: 1344383 Preparation of mono- and dimethylterephthalate DYNAMIT NOBEL AG 19 April 1971 [4 March 1970] 22835/71 Heading C2C Dimethyl terephthalate is obtained by air oxidation of substantially methanol-free pxylene/methyl p-toluate mixtures, esterification of the acids formed and return of the methyl p-toluate for oxidation, wherein a combination of cobalt and manganese compounds is used as oxidation catalyst. The invention also provides a method for producing p-toluic acid and monomethyl terephthalate which comprises subjecting to aerial oxidation, in the liquid phase, a substantially methanol free mixture containing p-xylene and methyl p-toluate at an elevated temperature in the presence of an oxidation catalyst which comprises a manganese compound and a cobalt compound which are soluble in the reaction system.
Patent GB-391004-A (GB)
Title: Elastic shaft couplings
IPC: F16D3/56
Filed: 1932-08-15
Abstract: 391,004. Universal couplings. FROST, O., 181, Sch³tzenstrasse, Solingen, Germany. Aug. 15, 1932, No. 22860. Convention date, Aug. 14, 1931. [Class 80 (ii).] In flexible shaft shaft couplings of the type comprising two disc members a with multiple concentric rows of axially - directed flaring bores c containing resilient connecting-pins e, the pins, which preferably have a polished surface, extend at each end for approximately half their length into the bores, are freely revoluble therein to avoid bending at the same places, and are retained by plates d. The Specification as open to inspection under Sect. 91 states that the coupling is suitable for use in rolling-mill roller drives, motor-vehicle and Diesel locomotive transmissions, and in reversing drives such as in travelling cranes and live-roller beds and ingot-pushing devices of rolling-mills driven by reversible electromotors. This subject-matter does not appear in the Specification as accepted.
Patent GB-816404-A (GB)
Title: Improvements in or relating to self-winding watches
IPC: G04B5/02
Filed: 1956-07-24
Abstract: 816,404. Watches. KIENZLE UHRENFABRIKEN A.G. July 24, 1956 [Aug. 19, 1955], No, 22868/56. Class 139 In a self-winding watch the rotor 1 carries a pinion 2, Fig. 1, which meshes with a change pinion 3 which, in accordance with the direction of movement of the rotor 1 meshes with one or other of two intermeshing gears 8, 9 in the winding train. The pivots 4 of the domed change pinion 3, Fig. 6, may be located in apertures 10 in plates 11, 12. The ends 5 and 6, Fig. 1 of the apertures form stationary stops which limit the movement of the change pinion 3, which is of a light metal or of a synthetic plastic. An arcuate or toothed member 7 or 7<11>, Figs. 1 and 5, guides the pinion 3 in its change over movement.