baber/WOPTO huggingface dataset:
Patent GB-302338-A (GB)
Title: A process for the production of citric acid by fermentation
IPC: C12P7/48
Filed: 1928-09-07
Abstract: 302,338. Montan und Industrialwerke vorm. J. D., Starck. Dec. 16, 1927, [Convention date]. Citric acid.-In the production of citric acid by the fermentation of carbohydrates by mould fungi such as aspergillus niger the mould stock is cultivated in alternating stages including cultivation in solid media of the gelatine and agar agar type, cultivation in liquid media under the conditions of industrial fermentation and cultivation on vegetable culture media (such as fruit pulps) containing organic acids and vitamins. The wash to be treated for the production of acid is such as would be used in an alcohol fermentation, nutrient substances being added in amount restricted to the minimum for the optimum conversion of sugar into acid, part of the nutritive nitrogen being in the form of organic compounds in particular amino acids. Protective substances which mask the acidity of the citric acid are also added, these including albumens or their degradation products, non-fermentable carbohydrates of high molecular weight &c. forming complexes with the citric acid of high molecular weight which are unable readily to penetrate the cells of the fungi. An example describes the fermentation with aspergillus niger of a mash containing sugar, potassium biphosphate, magnesium sulphate and ammonium nitrate the culture being prepared as set forth. In a further example a mash prepared as in the. foregoing example but without the ammonium nitrate, is heated with a similar culture with the addition of hydrolyzed glue solution. A discussion of the prior art of the production of citric acid by fermentation is contained in the Specification. Specifications 266,414 and 266,415 are referred to.
Patent GB-1432794-A (GB)
Title: Electric circuit breakers
IPC: H01H77/10
Filed: 1973-05-30
Abstract: 1432794 Automatic circuit breakers V Y GUSCHIN 30 May 1973 25764/73 Heading H1N A circuit breaker that opens immediately with a high overload current and also after a time delay with a persistent lesser overload current has: a tripping rod 16 engaged by a latch 14 that, when engaged, prevents a contact opening mechanism 9, 10, 11, 13 from operating; a tripping device 23, 24 (e.g. incorporating a time delay) that can move the tripping rod to release latch 14, which can then rotate and release the contact opening mechanism; electrodynamic means 4, 5, 6, 7 that increases pressure between contacts 2, 3, when closed, in response to current flow through the contacts; the latch 14 being linearly movable against a bias 19 in response to the pressure between the contacts in a direction to release the latch from tripping rod 16, whereby on a current through contacts 2, 3 exceeding a particular value, latch 14 disengages from tripping rod 16 and permits the contact operating mechanism to operate. The contacts may be separated by manual operation of lever 12. Small persistent overload current after a time delay causes device 23 via rod 24 to rotate tripping rod 16 and thus release latch 14 which is then free to rotate under the bias of spring 13 to release lever 11 of the contact opening toggle mechanism 9, 10, 11, 13. Current flowing through contacts 2, 3 also flows through windings 5, 6, so arranged with respect to contact carrying winding 6 pivoted at 7 that an upward force is provided, thus increasing contact pressure. This force is transmitted via linkage 9, 10 and lever 11 to pivot shaft 18 of latch 14. Upward movement of shaft 18 in slots 17 is resisted by spring 19. A particular (high) value of overload current lifts the assembly against the bias of spring 19 such that latch 14 is no longer restrained by tripping rod 16. Latch 14 is thus free to rotate and release the contact opening toggle mechanism. The value of overload current which lifts latch 14 out of engagement with tripping rod 16 is adjustable by means of screw 20 which alters the tension in spring 19. Stop 22 prevents rotation of rod 16 as latch 14 is lifted; this rotation would otherwise prevent release of latch 14.
Patent GB-1246209-A (GB)
Title: Improvements in or relating to high frequency power amplifying arrangements
Inventor: BRADSHAW BERNARD DAVID
IPC: H03F3/21
Filed: 1969-05-21
Abstract: 1,246,209. Amplifiers; automatic phase Control. MARCONI CO. Ltd. 26 Nov., 1969 [21 May, 1969], No. 25826/69. Headings H3A and H3W. Phase distortion in a high frequency power amplifier is reduced by applying signals derived from the input and output to a phase discriminator, the output of which controls a voltage controllable phase shifter connected in the input path of the amplifier. Power amplifier 5 is fed via hybrid power splitter 1, a switched attenuator 2, voltage controllable attenuator 3 and voltage controllable phase-shifter 4. Its output is taken sampling circuit 6, the output of which is taken via attenuator 7 and low-pass filter 8, eliminating harmonics of the signal frequency, to one input of a phase quadrature detector 10. The second input to phase quadrature detector 10 is derived from hybrid power splitter 1 via a delay circuit 11 giving the same delay as that over the path through power amplifier 1: its output controls phase-shifter 4. In addition amplitude distortion is reduced by applying the outputs from low-pass filter 8 and the hybrid power splitter 1 to an envelope detector 9 which detects any difference in amplitude and applies a correcting voltage to voltage controllable attenuator 3. The arrangement is more particularly intended for single and independent side band transmitters.
Patent GB-1519513-A (GB)
Title: Dental handpiece
IPC: A61C1/08
Filed: 1975-06-18
Abstract: 1519513 Dental handpieces SIEMENS AG 18 June 1975 [1 July 1974] 26047/75 Heading A5R A dental handpiece 1, Fig. 1, comprises an electric motor 11, Fig. 2 accommodated in a cylindrical housing 2 having a coupling sleeve 13 at one end onto which sleeve fits a part 5 having a head 6 carrying a dental drill 7, and a cable 4 connected to the other end of the housing and supplying the motor with electricity and having lines 15, 16 therein which supply lines 18, 19 in the housing with water and air respectively; lines 18, 19 ending in annular chambers 22, 23 respectively in an outer sleeve 14 surrounding sleeve 13 so that, when part 5 is fitted onto sleeve 13, lines 18, 19 communicate with respective lines (54), (56), Fig. 5 (not shown), of the part 5 leading to a nozzle 8 whence a coolant spray is directed onto the region being operated on during drilling or polishing. A valve 9 is adjustable to control the water supply from the cable to line 18. The lines (54), (56) are arranged in recesses in the outer periphery of part 5. In a modification, the air and water lines (61), (62), Fig: 7, (not shown), from the supply cable lead to a mixing chamber (63) of a valve similar to valve 9 whence a single line (65) extends within the motor housing to communicate with a single line in the tool-holding part. Instead of being arranged in recesses, the lines of the toolholding part may be contained therewithin. These arrangements of the coolant lines allow the tool-holding part to be rotated relative to the motor housing while a continuous coolant line is maintained to the vicinity of the drill.  Reference has been directed by the comptroller to Specification 1424715.
Patent GB-261473-A (GB)
Abstract: 261,473. Hacklõnder & Co., and Hacklõnder, K. H. Aug. 19, 1925. Addition to 237,284. Frictional machines. - In an electroscope as claimed in the parent Specification, the charging- rod n, Fig. 1, is accommodated in a socket having a lining n<1> of fur, cellulose, &c. and backed by a resilient layer of rubber sponge &c. The rod n may be attached to the casing by a silk cord to prevent loss. The frictional electrification of the charging-rod may be effected mechanically as shown in Fig. 8 in which the rod n is provided at its inner end with a square stud whereby it can be coupled to a small spring motor o. A milled head o<1> on the outer end of the rod allows the rod to be turned for winding up the motor, which is retained in wound-up position by means of a ratchet mechanism. On releasing the pawl, which projects through the casing, the rod n is rotated by the motor o and electrified. In a modification, the conductor itself may form the charging-rod, a cellulose-lined sleeve being arranged around it and adapted to be rotated either by hand or by a spring motor.
Patent GB-813136-A (GB)
Title: Improvements in or relating to parallel slide valves
Inventor: MARTIN HUGH ALLAN
IPC: F16K3/16
Filed: 1956-08-28
Abstract: 813,136. Slide valves. ALLEY & MACLELLAN Ltd., and MARTIN, H. A. Aug. 16, 1957 [Aug. 28, 1956], No. 26234/56. Class 135. The two halves 5, 6 of the gate of a parallel slide valve are urged apart by a plurality of disc springs or frusto-conical spring washers 14. As shown, each of a plurality of pairs of registering recesses 16 arranged on a pitch circle near the periphery of the parts 5, 6 houses a pair of opposed washers 14 mounted on a pillar 11, the spring pressure being transmitted to the part 5 by a distance piece 12 between which and the washers 14 adjustment shims 13 are fitted. More than one pair of washers may be arranged together, either with adjacent washers facing opposite ways, or with a plurality of nested washers opposing an equal number of similarly arranged washers. The parts 5, 6 are fitted with seating rings 7, 8 for co-operation with rings 3, 4 in the valve body and are held in register with each other by a sleeve 19 accommodated in circular pockets 15.
Patent GB-191144-A (GB)
Title: Improvements in humidifiers for internal combustion motors
IPC: F02M25/022
Filed: 1921-10-04
Abstract: 191,144. Haddan, A. J. H., (Critchlow, W. G., and Valentine, H. M., trading as Vix Motor Accessories Co.). Oct. 4, 1921. Charge, moistening; induction pipes, fittings for.-A charge-moistening device comprises a water trap 29, Fig. 3, attached at 37 to the overflow pipe of the radiator, and connected by a flexible conduit with the inlet 23 of a casing 17, Fig. 4, which is provided with a suction-actuated air-inlet valve 43 and a moisture outlet valve 20, the casing 17 being connected by a pipe 15 to a perforated tube 13 carried by a flange-shaped member 10 adapted to be secured between the carburettor and the induction pipe. The valve 20 may be operated from the dashboard, or may be interconnected with the carburettor throttle valve, and may be replaced by a needle valve. The water trap 29 is closed by a weighted valve 35 which is opened by the accumulated water, the suction-actuated air-inlet valve 43 preventing the vacuum in the system from rising to an extent which interteres with the opening of the valve 35.
Patent GB-1281317-A (GB)
Title: Brake control system
IPC: B60T8/34
Filed: 1971-04-19
Abstract: 1281317 Antiskid brake systems ALFRED TEVES GmbH 19 April 1971 [10 April 1970] 26304/71 Heading F2F  In an antiskid control system for dualcircuit brakes the primary portion 2 of a master cylinder 1 is combined with a pressure regulating valve 3 which operates to throttle the circulation of a pump 5, which pumps hydraulic fluid around a circuit including a reservoir 7, and applies pressure fluid to the rear brake cylinders via valves 11, 12 controlled by wheel sensors 13, the front brakes receiving pressure fluid from a pressure chamber 9 containing a floating piston 8 also operated by the pressure of fluid from pump 5 the valves 11, 12 releasing the brakes, on receipt of a signal from a control unit 14 indicating imminent skid conditions, by interrupting the connection from a pressure chamber 6 to the rear wheel cylinders and after a delay connecting the cylinders to the reservoir 7. Valve 11 is operated at a first deceleration threshold V 1  and at a further threshold V 2  or after the running out of a time delay member t v  which commences at receipt of v 1  valve 12 is operated to connect the cylinders to the reservoir 7. A time delay circuit t h  keeps valve 12 operated until an acceleration signal b is received while valve 11 is released. The cycle may then be repeated. A by-pass 21 connects chambers 6 and 9 and contains a pressure difference indicator 22 which generates an alarm signal upon failure of one of the brake circuits. In a modification, Fig. 3, valves 11<SP>1</SP>, 12<SP>1</SP> control the front brakes in similar manner. In the case of pump failure the secondary piston is moved by an extension 25 contacting the primary piston.
Patent GB-1070302-A (GB)
Title: Process for the purification of biologically active preparations
IPC: A61K35/12
Filed: 1964-06-25
Abstract: Biologically active preparations derived from animal sources, e.g. enzymes, heparin, are purified by treatment with a polyamide in a finely-divided state, the latter acting as an adsorbent for coloured contaminants therein.ALSO:Biologically active preparations derived from animal sources e.g. insulin, heparin, gonadotrophins, adrenocorticotrophins, thyrotrophic hormone preparations, and enzymes, are purified by treatment with a polyamide in a finely divided state, the latter acting as an adsorbent for coloured contaminants therein.
Patent GB-855900-A (GB)
Title: Lanthanum borosilicate glass
IPC: C03C3/068
Filed: 1959-07-31
Abstract: 855,900. Optical glass compositions. ZEISS-STIFTUNG, C., [trading as JENAER GLASWERK SCHOTT & GEN.]. July 31, 1959 [Aug. 7, 1958], No. 26417 /59. Drawings to Specification. Class 56. Optical glass of high nd and U-values comprises in weight percentages, La 2 O 3  45 to 67 ; Al 2 O 3  7 to 21 ; SiO 2  5 to 37 ; and B 2 O 3  6 to 36. Additionally the glass may comprise alkaline earth oxides, alkali metal oxides and/or ZnO, CdO, PbO and /or TiO 2  and up to 5% of ZrO 2 , Ta 2 O 5 , Nb 2 O 5  or WO 3 , total being less than 10% The ingredients in the form of their hydrated or anhydrous oxides or hydroxides or acids are mixed in a platinum crucible at temperature between 1300 and 1500C. and thereafter refining the melt between 1360 and 1550C. A number of examples are given.
Patent GB-1039973-A (GB)
Title: Improvements in and relating to fertilizers containing ammonium phosphate
Inventor: GOW JOHN STOBIE
IPC: C05B19/00
Filed: 1962-07-10
Abstract: A PKN fertilizer containing at least 40 plant food units is prepared by forming at 50-95 DEG  C. a plastic mixture of ammonium nitrate, diammonium phosphate and potassium chloride containing 0.5-4.5% of water, granulating, drying at a temperature not exceeding 105 DEG C., and sieving to obtain a granular product of desired particle size.  1 plant food unit is 1% by weight of N, P2O5 or K2O.  Fines and ground oversize particles may be recycled.  The ammonium nitrate may be added as a hot concentrated aqueous solution of at least 95% concentration. The diammonium phosphate may be added in a mixture containing monammonium phosphate and having a N : P ratio of 1.1-1.8 : 1.  An aqueous mon/diammonium phosphate slurry of 55-90% concentration obtained by ammoniation of commercial wet process phosphoric acid may be added at 60-115 DEG  C. midway along a blunger to partially crystallized ammonium nitrate.  A mon/diammonium phosphate mixture may alternatively be added to a twin bladed paddle mixer as an ammoniated solid produced from a mixture of two ammonium phosphate slurries having N : P ratios of 0.7 : 1 and 1.3-1.5 : 1. In a modification, ammoniation may be effected in the mixer.  The potassium chloride may have a particle size of 5-200 BSS.  The composition may also contain ammonium sulphate.  The granules may have a particle size of 1.5-3.5 mm. They may be coated with lubricating oil, kaolin, talc or kieselguhr.
Patent GB-248283-A (GB)
Title: An improvement in devices for removing capsule stoppers from bottles
IPC: B67B7/16
Filed: 1925-10-23
Abstract: 248,283. Mallinson & Co., Ltd., R., and Mallinson, R. Oct. 23, 1925. Addition to 235,749. Prizing-tools for removing capsules.-A device for removing ' crown corks ' comprises a wire a of T-section bent to form a cross-bar a<2>, adapted to engage the top of the ' crown cork,' and converging portions a<3> in which a flange a constituting the stem of the T is adapted to engage beneath the skirt of the crown cork ' to effect its removal. L-section wire may replace the T-section wire.
Patent GB-968412-A (GB)
Title: Improvements in or relating to theophylline derivatives
Inventor: LAFON VICTOR
IPC: C07D473/04
Filed: 1961-07-21
Abstract: The invention comprises: the 7-theophyllinoacetate of 2-dimethylaminoethoxy-bis-(61-tetralyl)-methane of the formula: <FORM:0968412/C1/1> and pharmaceutical compositions containing it together with a carrier; the preparation of the salt by reacting the acid with the aminoether at an elevated temperature, preferably in butanone; and the combination of this process with the preparation of the aminoether by condensing the sodium derivative of bis-(6-tetralyl)-carbinol with 1-dimethylamino-2-chloroethane.  The pharmaceutical compositions have anti-histaminic and antiemetic properties.
Patent GB-270961-A (GB)
Title: Method of repairing damaged stockings, socks and the like
IPC: A41H27/00
Filed: 1926-10-25
Abstract: 270,961. Liedtke, H. Oct. 25, 1926. Patches.-Damaged stockings, socks, &c. are repaired by means of coated patches of similar material rendered adhesive by heat. The stocking is turned inside out over a hard object covered with flannel and the patch secured by a hot iron, the flannel absorbing the superfluous adhesive. Reference has been directed by the Comptroller to Specification 121,095.
Patent GB-251531-A (GB)
Title: Improvements in or relating to bricks, blocks, or tiles for use as road direction indicators
IPC: E01F9/06
Filed: 1925-10-24
Abstract: 251,531. Barrey, W. H. Oct. 24, 1925. Surface markings. - A roadmarking sign for curves and like places comprises a series of blocks each of which has a surface of transparent or reflecting material. Fig. 2 shows one block of white material having solid or hollow reflecting-devices b of glass, silver steel, or the like embedded therein. Fig. 4 shows a modification in which a capping c of reflecting material is bulged to form knobs d, and is secured to the body of the block by hooked or rag bolts e. The capping may be made in two parts to allow the block to be divided into two parts. Fig. 5 shows a capping packed with wood h to level it, so that it can be screwed to existing wooden road blocks. The blocks may be made with a transparent upper layer to transmit light from a reflecting surface underneath.
Patent GB-461912-A (GB)
Title: Improvements in and relating to electric lamp sockets
IPC: H01R33/06
Filed: 1935-09-27
Abstract: 461,912. Two-part couplings. GENERAL ELECTRIC CO., Ltd., and QUANCE, F. G. Sept. 27, 1935, No. 26770. [Class 38 (i)] A holder for a tubular lamp is rendered weatherproof by means of a rubber gasket 4 shaped at the top to fit against the lamp and having walls 6, 7 around its periphery that engage outside and inside the side and end walls of the holder 1. The lateral contact of the lamp extends through a hole 5 in the gasket and slightly compresses the gasket between it and the holder. The contacts are carried on the base of the holder 1 and the latter may be mounted in a second gasket 8 having a peripheral wall 9, a cable inlet 10, and holes 11 for the fixing screws.
Patent GB-1173436-A (GB)
Title: Character Generator
Inventor: BOUCHARD RICHARD
IPC: G09G1/18
Filed: 1966-10-18
Abstract: 1,173,436. Cathode-ray tube displays. SANDERS ASSOCIATES Inc. 18 Oct., 1966, No. 26910/69. Divided out of 1,173,435. Heading H4T. The description is identical to that in Specification 1,173,435, but the claims are directed to character display apparatus in which the characters are produced by selecting appropriate parts of a composite display matrix common to all characters, the matrix comprising a pattern of line segments, the whole or fractional portions of which are utilized, under the control of timing means, to form the characters.
Patent GB-841713-A (GB)
Title: Electrostatic transducers
IPC: G08C19/06
Filed: 1957-08-27
Abstract: 841,713. Electric measuring systems. HERVE, M. Aug. 27, 1957 [Aug. 30, 1956], No. 26989/57. Class 40 (1). An electrostatic transducer for producing an electrical representation of a mechanical movement comprises four variable condensers connected to form a bridge-circuit which is normally balanced, the movable plates of the condensers moving together so that the capacities of two of the condensers increase as those of the other two decrease, and means for deriving an output voltage from the bridge circuit which is proportional to the movement of the plates from the balanced or null position. Fig. 1 shows the arrangement in diagrammatic form, the output voltage being developed across S, T. Fig. 2 shows an embodiment in which the movement of the plates takes the form of an angular displacement. In Fig. 3, the condensers are plane parallel plate condensers, the movable plates being shown at a displacement x from the balanced position. Fig. 4 is a further embodiment in which the variable parameter takes the form of a central cylinder sliding within an outer cylinder. Fig. 6a shows the arrangement embodied in a microphone, the central flexible vibrating membrane B carrying the movable plates which co-operate with the fixed plates P 1 . Fig. 9a shows a gramophone pick-up, in which the stylus N causes rotation of a cylinder B carrying the movable plates.
Patent GB-241726-A (GB)
Title: Improvements in or relating to valves or cocks and to locking devices therefor
IPC: F16K35/02
Filed: 1924-11-12
Abstract: 241,726. Bennion, C. F. Nov. 12, 1924. Locking-catches.- A gas valve for gas cookers &c. is locked in different positions by a catch released by a push-button, which is housed wholly in a recess so as to be protected against accidental actuation. The pushbutton 11, Fig. 3, is housed in a recess 10 in the valve head 2. The locking-bolt 12 is keyed at 18 to the rotary valve plug 1 and engages a ring of serrations 14 on the fixed valve body 4. To release the valve the bolt is depressed against the action of a spring 16. The plug 1 is formed with a peripheral recess 20 of varying depth to register with the ports 21, 22. The head 2 is provided with radial fins 3 and with stops 7, 8 and graduation marks. Fig. 6 shows a modification in which a locking-bolt 32 pivoted in a fixed yoke 28 engages radial notches 24 in the valve head 23, and is released by pressing on a button 31 housed in a recess 38 in the yoke 28.
Patent GB-279821-A (GB)
Title: Improvements in or relating to the generation of ultra short electric waves
IPC: H03B11/02
Filed: 1927-10-12
Abstract: 279,821. Esau, A. Oct. 29, 1926, [Convention date]. Spark-gap oscillation generators; modulating systems.-Short waves having a wavelength substantially less than 100 metres, are generated by supplying a circuit including a spark-gap F with alternating current of a frequency above audition whereby the wave trains generated and following each other, although individually damped, produce a substantially undamped oscillation. The alternating current may be generated by a dynamo-electric machine, or by an arc or valve generator. Modulation is effected by means of a modulating device M in the circuit of the highfrequency current supplying the spark gap.