baber/WOPTO huggingface dataset:
Patent GB-1347308-A (GB)
Title: Capacitive means for controlling threshold voltages  in insulated gate field effect transistor circuits
IPC: H03K19/096
Filed: 1971-10-08
Abstract: 1347308 Semi-conductor data storage TEXAS INSTRUMENTS Inc 8 Oct 1971 [2 Nov 1970] 46891/71 Heading H3T In a multiphase F.E.T. circuit such as a shift register stage, an inverter F.E.T. 19, receiving an input from 20, receives a gate boost to overcome its threshold by way of a capacitor 16 from one phase of the supply. In # 1  time a 0 or 1 is gated by F.E.T. 23 to F.E.T. 19 gate and in # 2  time the sum of the # 2  voltage transmitted by C16 and the "1" voltage turns on F.E.T. 19; but the sum of # 2  and the "0" voltage does not. C17 is a load for the inverter F.E.T. 19. The second half of the stage is similar. In modifications, the load C17 is replaced by one or a pair of F.E.T.'s (48, Fig. 8, 55, 56, Fig. 9, not shown) and these arrangements are further modified by interchanging clock supplies (Figs. 10, 12, 13, not shown). Further capacitors are included and supply voltages replaced entirely by clock voltages in another arrangement (Fig. 11, not shown). A cross-coupled bi-stable (Fig. 14, not shown) has a boost capacitor connected to one of the inverter transistors. A TTL-MOS interface circuit (Fig. 15, not shown) also uses a boost capacitor.
Patent GB-1492058-A (GB)
Title: Gas filter units
IPC: B01D50/00
Filed: 1974-11-04
Abstract: 1492058 Removing particles from gas DOLLINGER CORP 4 Nov 1974 [10 Dec 1973] 47676/74 Headings B1T and B2P In apparatus for removing particles from gas (e.g. smoke obtained in a welding operation) the gas is sucked by impeller 56 driven by electric motor 54, through inlet 24 into a chamber below plate 22 whereby particles are removed by centrifugal action and collect in the bottom of the chamber; the partially purified gas is then drawn through opening 23 and inwardly through pleated filter cartridge 30. The purified gas is discharged via opening 58 and outlet 59. The filter cartridge is releasably held in position by bolts 38 and nuts 39, 43. Pressure indicator 50 indicates when the cartridge is clogged. The casing 10 comprises two sections 11, 12 sealingly and releasably clamped together.
Patent GB-1140319-A (GB)
Title: Production of carbon black oil
Inventor: SMITH JOHN HENRY
IPC: C09C1/48
Filed: 1967-10-24
Abstract: 1,140,319. Making petroleum tar. CONTINENTAL OIL CO. 24 Oct., 1967 [15 March, 1967], No. 48350/67. Heading C5E. A feedstock for making carbon black is produced by thermally cracking a virgin gas oil, separating tar from the cracked products, thermally recracking the tar, and separating a recracked tar from the recracked effluent. The first cracking is conventional, e.g. at 300 to 800 p.s.i.g. and 850 to 1000 F., and the recracking is preferably at a higher temperature and a shorter residence time. A specific example is described with reference to a flow diagram, Fig. 2 (not shown), which includes a flash tower between the cracking furnaces, a high-pressure flash drum after the recracking furnace, recycle lines for gasoline &c., and steam lines to the flash tower, recracking furnace, and flash drum.
Patent GB-1074099-A (GB)
Title: Improvements in or relating to the production of calcium and magnesium carbonates
Inventor: VLADAR JANOS
IPC: C01B11/18
Filed: 1963-12-09
Abstract: Powdered calcium carbonate and/or a solution of magnesium bicarbonate are prepared from a natural mineral containing calcium or magnesium carbonate or both, by heating the mineral to convert the carbonate to oxide, slaking the oxide with water to give hydroxide, reacting the resulting solution or suspension of hydroxide with carbon dioxide in a reactor in which both the hydroxide solution or suspension and the carbon dioxide are forced to flow continuously upwardly under pressure against gravity, and thereafter recovering the powdered calcium carbonate and/or solution of magnesium bicarbonate.  The hydroxide solution or suspension may be subjected to vibration, preferably ultrasonic vibration, during the reaction with carbon dioxide as may the oxide during slaking.  The carbon dioxide may be derived from the calcination of a naturally occurring carbonate mineral and may be introduced into the reactor through a porous or perforated surface to distribute it in the form of fine bubbles.  The calcium carbonate may be recovered by filtration under pressure.  The reactor may comprise a tubular reaction space, the longitudinal axis of which does not deviate by more than 15 degrees from the vertical, the average cross-sectional area of which is not more than 1200 cm.2 and the length of which is at least 15 times its average diameter. It may be fitted with a vibrator preferably an ultrasonic vibrator, for vibrating the reactants during the carbonation reaction.  The solution of magnesium bicarbonate obtained may be used to prepare magnesium oxide which may be employed to prepare magnesium metal by chlorination and electrolysis of the magnesium chloride so obtained, pure carbon dioxide being a useful by-product.
Patent GB-1104294-A (GB)
Title: Production of lower alkanols and lower alkyl bromides
IPC: C07C17/38
Filed: 1963-12-10
Abstract: A C1-C8 alkyl bromide is produced from the corresponding alkane by reacting an excess of the alkane with bromine at elevated temperature to produce the bromide and hydrogen bromide, separating the hydrogen bromide, recovering the alkyl bromide, oxidizing the hydrogen bromide to produce bromine and recycling the bromine to the bromination step. If desired the alkyl bromide may be hydrolysed with water or steam at elevated temperature to give the corresponding alkanol and hydrogen bromide, and the hydrogen bromide separated and oxidized to bromine which is recycled to the bromination step.  The bromination step is preferably carried out at 80-450 DEG C. and 1-200 atm. absolute and may be carried out in the presence of a catalyst, e.g. tetraethyl lead or other catalyst generating free radicals, ultraviolet light or a silent electric discharge.  The oxidation of the hydrogen bromide may be carried out by molecular oxygen or nitric acid. If oxygen is used, e.g. in the form of air, a catalyst such as nitric acid, nitric oxide, a nitrate or nitrite is preferably also present.
Patent GB-1528329-A (GB)
Title: Framing in data bit transmission
IPC: H04L7/04
Filed: 1975-11-28
Abstract: 1528329 Framing WESTERN ELECTRIC CO Inc 28 Nov 1975 [2 Dec 1974] 48950/75 Heading H4M In a t.d.m. system, channel data 1-7 is assembled into frames, each including a random, or pseudorandom bit R, and a parity bit F, the bits F being used as framing data. Each bit F designates the parity {modulo-2 sum} of all bits (as embodied, 16 bits} of the preceding frame, panty detector 40 of the receiving circuits 60 comparing the modulo-2 sum of the bits of a preceding frame with the parity bit 52 of the current frame and generating an error signal for circuit 39 should there be a parity error, such error in two successive frames causing an out-of frame condition to be indicated, disenabling framing counter 36 controlling converter 34, the reception of four frames without parity violation being necessary, as detected by circuit 39, before an in-frame condition is restored. The insertion of pseudorandom bit R minimizes the probability that a false "in-frame" condition will occur. Transmitter, 10, Fig. 1; Fig. 3 (not shown). Analogue {video, voice} or digital channel data pass to a/d converters, or pulse encoders (CH1-CH7) and hence to concentrator 14 (111) serializing the data under control of counter 16, the serialized data passing via an arrangement 18(113, 114) ensuring that at least one pulse, not in a framing pulse position, per predetermined number of serial bits is transmitted to ensure retention of receiver synchronization. The serial bits are added in modulo-2 counter (145) included in the parity detector 20 and coupled to counter 16, the so calculated parity of frame being passed to the input (0) of the concentrator (111) for inclusion in the succeeding frame. A pseudorandom pulse R for each frame is generated by unit 22, comprising a shift register (150-155) and logic gates (156-159). The data is transmitted in a bipolar format in which successive "1"s in the data have opposed polarities, due to arrangement (117, 170, 171, 120, 121). Receiver 60, Fig. 1; Figs. 4A, 4B (not shown). Distribution is brought about by serial-to-parallel converter 34 controlled by counter 36, detector 40 comparing the parity bit 52 of the current frame with the modulo-2 sum of all bits of the frame, whence that bit was derived, two successive parity violations needing to be detected before an "outof-frame" condition is indicated, blocking counter 36, an "in-frame" condition being re-established only when, due to circuit 39, four successive frames without parity violation are subsequently detected. A bipolar error detection circuit 41 ensures that the parity detection circuit operates only when the incoming data retains the bipolar characteristics as transmitted, the incoming data having been regenerated by analogue comparators (205, 206) for passage to the circuit (41), and for combination to provide the serial pulse train for the converter 34.
Patent GB-1331608-A (GB)
Title: Process and apparatus for isostatic pressure moulding
IPC: B28B3/00
Filed: 1970-10-15
Abstract: 1331608 Isostatic mouldings FRIEDRICH UHDE GmbH 15 Oct 1970 [15 Oct 1969] 49066/70 Heading B5A An isostatic moulding apparatus has an outer casing 1 with a flexible, e.g. rubber, mould 7 therein backed by contouring rings 3 held in place by bars 5 and screws 4 so that they can be fixed during filling but released to accommodate dimensional changes during pressing. In operation, to mould an electrical insulator, screws 6 are tightened to draw the rings 3 to the outer casing, and the mould 7 is inserted with its upper end turned down over the casing top. A ceramic material or powdered metal is then filled into the mould and compacted by vibration, before a plug 8 is inserted. The plug 8 has a lining which is also turned over the casing top and with the mould 7, clamped by a ring 9. Before subjecting the mould to pressure, the screws 6 are slackened to allow the rings 3 to float. The screws 4 are adjustably located in elongated slots in the bars 5.
Patent GB-1395738-A (GB)
Title: Method for producing wear resistant surfaces
IPC: C25D7/00
Filed: 1972-10-25
Abstract: 1395738 Records INTERNATIONAL BUSINESS MACHINES CORP 25 Oct 1972 [30 Dec 1971] 49105/72 Heading G5R [Also in Division C7] A wear resistant surface is provided on a first component, e.g. a magnetic disc or tape of granular material having a predetermined grain size, for sliding mechanical contact by a second component, e.g. a magnetic transducer head movable over the surface, by forming on the first component a layer of granular polycrystalline material, e.g. Au or Ni having a grain size of 10 to 1000, less than that of the first component, to reduce the development of a wear track caused by an asperity of the face of the second component. A polycrystalline Ni layer may-be electroplated from a solution comprising 218 g/l NiCl 2 .6H 2 O, 25 g/l H 3 BO 3 , 1À64 g/l Na saccharin and 10 drops of saturated 2- butyne 1,4 diol.
Patent GB-1367169-A (GB)
Title: Process for the purification of an antibacterial agent
IPC: C07D501/12
Filed: 1971-10-22
Abstract: 1367169 Purifying 7-[α-(4-pyridylthio)acetamido]cephalosporanic acid BRISTOL-MYERS CO 22 Oct 1971 [23 Oct 1970] 49113/71 Heading C2A Novel solvates of 7-[α-(4-pyridylthio)acetamido]cephalosporanic acid and dimethylformamide (DMF), dimethylacetamide (DMAC) or formamide are produced in a process for purifying the said cephalosporanic acid comprising (a) dissolving the impure cephalosporanic acid in DMF, DMAC or formamide containing dissolved ascorbic acid or citric acid, and (b) recovering the spontaneously crystallizing product which is the purified cephalosporanic acid in the form of the aforesaid solvate. The solvate may then be treated to remove the bound solvent, e.g. by dissolving in methylene chloride containing triethylamine (1 mole per mole of cephalosporanic acid) and then titrating with sodium ethylhexanoate to precipitate the solvent-free sodium cephalosporanate. The impure 7-[α-(4-pyridylthio)acetamido]- cephalosporanic acid is preferably dissolved in a proportion by weight of one part to 8 to 12 parts of DMF, DMAC or formamide containing 0À4 to 0À6 part of ascorbic or citric acid. The solution is allowed to stand, when the solvate crystallizes out and is filtered off, washed with acetone and dried. The solvate contains 1 mole DMF or DMAC or 2 moles of formamide per mole of the cephalosporanic acid. The mother liquor from the crystallization may be used again for a further purification, such re-cycling being repeated up to about five times.
Patent GB-1162769-A (GB)
Title: Delta<,5>-7alpha-Methyl-Estradienes and their preparation
IPC: C07C/
Filed: 1967-10-30
Abstract: 1,162,769. #<SP>3,5</SP>-7α-Methyl-estradiene compounds. CIBA Ltd. 30 Oct., 1967 [28 Oct., 1966], No. 49202/67. Heading C2U. Novel steroids of the formula (wherein R 1  is a free, esterified or etherified OH group; and R 2  is a C 1-4  aliphatic hydrocarbon radical which may be halogen-substituted or is hydrogen, or R 1  and R 2  together are an oxo group) are prepared (1) by liberation of a protected 17-oxo group e.g. a ketalized oxo group, to form a free 17-oxo group in appropriate 3-unsubstituted - #<SP>3,5</SP> - 7α - methyl starting materials; (2) by splitting off water or acid from corresponding 3 - (free or esterified hydroxy) compounds containing a #<SP>4</SP>, #<SP>5</SP> or #<SP>5(10)</SP> double bond; (3) by treating with Raney nickel in a solvent corresponding compounds containing a 3-benzylthio substituent; (4) by splitting off water or acid from corresponding 4α-(free or esterified hydroxy) compounds containing a #<SP>5</SP> double bond; or (5) by halogenating and dehydrohalogenating corresponding #<SP>4</SP> ring B saturated compounds; followed, when desired, by reduction of the 17-one to a 17#-ol with or without introduction of a 17α-hydrocarbon substituent, by oxidation of the 17#-ol to the 17-one, by esterification or etherification of a free 17#-ol, or by liberation of a free 17#-ol from its ether or ester. In method (2) starting materials may be used which, under the reaction conditions, are converted to the stated starting materials containing a #<SP>4</SP>, #<SP>5</SP> or  # 5(10) double bond e.g. there may be used starting materials containing a 3-(free or esterified OH group) and a 5- or 6-(free or esterified OH group) and being fully saturated in rings A and B; this variant may be carried out stepwise, by first eliminating the 3-substituent and then the 5- or 6-substituent. Esters which may be used in method (2) include not only arylates such as alkanoates but also carbalkoxylated 3- hydroxy compounds and xanthates containing a 3-O.CS.S alkyl group. #<SP>4</SP> - 3,17# - Dihydroxy - 7α- methylestrene is prepared by reduction of 7α-methyl-19-nortestosterone. The #<SP>3</SP>'<SP>5</SP> - 3 - unsubstituted - 7α - methylestradienes of the invention, which are stated to possess estrogenic and antiovulating properties, may be made up into pharmaceutical or veterinary compositions for enteral, parenteral or local administration with suitable carriers.
Patent GB-1473376-A (GB)
Title: Stacking of bales
IPC: B65G47/244
Filed: 1974-11-14
Abstract: 1473376 Bale sledges BRITISH LELY Ltd 11 Nov 1975 [14 Nov 1974] 49406/74 Addition to 1375042 Heading B5F [Also in Division B8] The bale stacking implement of the main patent is provided with a guide fin 100 pivotably supported by a frame beam 101, which fin guides the edge of a first bale A of a pair directed into the implement by the pivotable arm 5. A second bale B contacts an arm 102 fixed to the fin 101, causing the fin 100 to pivot upwardly out of the path of the bales A, B, Fig. 1 (not shown). Further, the frame of the implement is articulated.
Patent GB-1375745-A (GB)
IPC: B60S1/60
Filed: 1973-10-25
Abstract: 1375745 Cleaning vehicle lamp glasses GENERAL MOTORS Ltd 25 Oct 1973 [26 Oct 1972] 49468/72 Heading A4F A motor vehicle head-lamp washing system comprises a pump 12 for pumping washing liquid from a reservoir 10 through a pipe 16 which extends from the top of the reservoir 10 and is connected to piping 20 attached to washer jets 22, 24 and a portion of the pipe 16 or piping 20 which is elevated with respect to the base of the reservoir 10 is provided with a pressure responsive valve 18 adapted to bleed air into said portion when the pressure of liquid therein adjacent the valve 18 falls below atmospheric pressure. Siphoning of liquid from the reservoir 10, through the jets 22, 24, or stopping of the pump 12, is thereby prevented.
Patent GB-1398065-A (GB)
Title: Twisting frame
IPC: D01H11/00
Filed: 1973-10-24
Abstract: 1398065 Cleaning spinning frames MURATA KIKAI KK 24 Oct 1973 [25 Oct 1972 16 Feb 1973 22 Feb 1973] 49504/73 Headings DID and D1F A twisting frame having yarn-twisting spindles has a main fly extraction duct connected to an air duct enclosing a spindle and to an air duct enclosing a tangential spindle drive belt. In a two-for-one twister, Fig. 1, main duct 14 is connected by pipes 24 to separate ducts 13 each enclosing one spindle and via gaps 28 to ducts 11 enclosing belt 9. Duct 14 is made of two U-shaped metal or plastics channels, and may be provided with two longitudinal baffles to reduce turbulence. Each duct 13 comprises the top wall of spindle rail 18, a square member 22 having a central cavity for a spindle, and a cover 23. Ducts 13, Fig. 6, may be connected by projections 14 in slots 40, and may have a lower transparent window. Cover 23 may be hinged to body 22, or may be located under projections 45 of plates 46 secured to the wall, e.g. by springs 48. Alternatively, Fig. 9, each duct 13 may have curved surface 31 and a frusto-conical surface 32 to assist air flow, a hinged cover 23 and a lowerable yarn outlet pipe 26. Ducts 11, Fig. 1, comprises rail 18 closed by a flexible cover 19 or by a transparent, hinged cover 19 held closed by a magnet. The ends of ducts 11 may also be connected to the main duct. Suction apparatus, including an air filter and an air guide covered with sound absorbing material, may be arranged at the end of the main duct. Rod 71, Fig. 1, drops upon yarn breakage to limit yarn ballooning.
Patent GB-1488026-A (GB)
Title: Time switches
IPC: H01H43/04
Filed: 1974-11-15
Abstract: 1488026 Time switches GENERAL ELECTRIC CO 15 Nov 1974 [16 Oct 1974] 49548/74 Heading H1N A time switch which opens and closes contacts at times which automatically differ on consecutive days, comprises a time of day member 10 continuously rotated adjacent a switch actuator 20 and carrying selectively positionable ON and OFF members 12 and 14 for operating said actuator 20 to close and open the contacts respectively; said actuator 20 including a cam 44 for actuating said contacts at predetermined but different times than those set by members 12 and 14, which cam 44 has irregularly disposed surfaces such that the switching times also differ during consecutive complete rotations of the time of day member 10. Preferably said actuator 20 also includes a cam 34 for actuating contacts at the times set by members 12 and 14, and selector means 58 to 66 are provided for manually selecting alternative operation of said contacts by said cam 34 or by said cam 44. As shown the ON and OFF members 12 and 14 have locating teeth 79 co-operating with teeth 77 around the 24-hour dial 10 driven by a synchronous motor 4 via bearing 6. Teeth 82, 84 on respective arms of members 12 and 14 engage teeth 124 on actuator 20 to rotate integral cams 34, 44 by 60 degrees for each passage of a member 12 or 14, the rotation through 60 degrees taking about one and a half hours. An input prong 22 which projects at the rear of the time switch is connected to an output socket 26 at the front, while a second input prong 24 is connected to two contact blades 46 and 50 in parallel and arranged to co-operate respectively with contact blades 48 and 52 connected in parallel to the second output socket 28. Cam 34 has two regular tracks acting on blades 46 and 48 in Arzberger fashion to snap them closed and open at times set by the members 12 and 14 respectively, while cam 44 has two tracks with irregular lobes displaced so as to open and close respective blades 50 and 52 at times which differ from the set times by amounts which are different for consecutive 120 degree angular movements (i.e. consecutive days) but of course lie within the 1¢-hour range of each 60 degree step. A manually operable knob 58 is located by arm 70 in one of four angular positions wherein (a) projection 62 holds contact blade 48 in closed position, (b) projections 64 and 66 hold blades 46 and 50 in open positions, (c) projection 66 holds blade 50 open, or (d) projection 64 holds blade 46 open. Since the two pairs of contacts are electrically in parallel (Figs. 12 and 15, not shown), this provides (a) manual ON, (b) manual OFF, (c) automatic operation at the set times, or (d) operation at automatically variable times.
Patent GB-1097121-A (GB)
Title: Improvements relating to electronic amplifiers
Inventor: DREW ANTHONY JOHN
IPC: H03F1/34
Filed: 1963-12-17
Abstract: 1,097,121. Valve and transistor amplifiers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 17, 1964 [Dec. 17, 1963; Jan. 23, 1964], Nos. 49766/63 and 2985/64. Headings H3T and H3W. An amplifier having feedback and a relatively high output impedance includes in its feedback circuit a three-terminal unit comprising a resistor connected between two of the terminal points B, E, a valve or transistor having its grid or base connected to one of these two points B or E and a second resistor connected between the other of these points E or B and the cathode or emitter with the anode or collector connected to the third terminal point C, the first resistor being connected in series with any load connected to the amplifier (at point O), and the feedback being taken from the third terminal point to an earlier point in the amplifier. As shown in Fig. 6 the base of the transistor is connected to B and the emitter resistor to E. A constant current bias feed is supplied to the unit by transistor Tb. In Fig. 7 (not shown) the transistor T1 has its base connected to E and the emitter resistor connected to B with the bias feed transistor arranged such that its collector is connected to the base of transistor T1. The bias may also be provided by a Zener diode connected between B and the base or emitter resistor. The single transistor may be replaced by two having the emitter of one connected to the base of the other and the collectors coupled together (Fig. 1a, not shown).
Patent GB-1318780-A (GB)
Title: Differential pressure transducer
IPC: G01L9/00
Filed: 1970-10-20
Abstract: 1318780 Pressure transducers ROSEMOUNT ENG CO 20 Oct 1970 [27 Oct 1969] 49768/70 Heading G1N A differential pressure transducer comprises a movable metal diaphragm 28 which forms with metallic layers 39, 40 the electrodes of a differential capacitor, the diaphragm communicating with first and second isolation diaphragms 44, 45 by way of oil-filled chambers and passageways 31, 32, and the glass insulation filling the cavities 29, and on concave surfaces of which the metallic layers are deposited, serving as a mechanical stop for deflection of the metal diaphragm before an isolation diaphragm can be engaged by an adjacent surface 31. Metal tubes 34 are electrically connected with the layers 39, 40 and serve as leads to the capacitor, the movable electrode of which is connected to the metal housing 27. The tubes also provide for filling the transducer with oil. Ceramic tubes 33 having axially extending openings are provided in the passageways 32 and fused into the glass during manufacture. The isolation diaphragms are corrugated and of stainless steel whilst layers 39, 40 are nickel.