baber/WOPTO huggingface dataset:
Patent GB-632942-A (GB)
Title: Improvements in rectifiers and methods of making them
IPC: C22B41/00
Filed: 1946-12-23
Abstract: 632,942. Alloys; annealing. WESTERN ELECTRIC CO., Inc. Dec. 23, 1946, No. 37770. Convention date. Dec. 29, 1945. '[Classes 72 and 82(i)] [Also in Groups XXXVI, XL(b) and XL(c)] Germanium material suitable for asymmetric conductors is prepared by producing in an oxygen-free atmosphere a melt of germanium to which has been added a trace of one or more of the elements. antimony, arsenic, bismuth and phosphorus. The dioxide may be heated to 650C in a previously flushed furnace through which 'hydrogen is passed, then to 1000C to complete its reduction while molten. The material after cooling may then be heated with an addition of .1 per cent tin in a helium atmosphere or in vacuo in an induction furnace, Fig. 2, (not shown), having an induction heater 30, slowly raised outside the furnace wall so that the charge is first melted then solidified from the bottom upwards, the charge being held in a porcelain crucible 35 surrounded by an inductively heated graphite crucible 36, or in a graphite crucible, tin then not being necessary. Alternatively both the processes could be effected in the furnace of Fig. 2. The melt may contain .00005 to .001 per cent arsenic or .001 to .01 per cent antimony. The resulting ingots contain both P-type and N-type germanium in layers, the bottom layer and part of the sides which solidify first being of P-type, and the N-type is divided into high back voltage and low back voltage layers, (P and N types are those giving greater current when the crystal is positive or negative repectively to a point contact). The N-type material adjacent the sharply divided P-type layer may, if prepared in the graphite crucible, have a back voltage up to 475 volts. If the ingot is heated to 800C or 900C and rapidly cooled. the N-type material is mostly changed to P-type. Between 400C. and 700C. the P-type is however wholly converted slowly to N-type of high back voltage and remains of this type independent of the cooling rate. Further, by heating to 800-900C and cooling slowly high back N-type germanium again is produced. An N-type layer having an adjacent P-type layer may be used, Fig. 8, (not shown), for producing area contact rectifiers or photocells. Fig. 9 shows a detector crystal and whisker mounted on metal studs 53, 54 adjustably secured by set screws within metal sleeves 51, 52 screwed into opposite ends of a ceramic housing. Frictional grip connector caps 60 connected to leads fit on outer terminals of the sleeves. Alternatively, Fig. 10, (not shown), the sleeves may be moulded into a plastic housing and the studs secured in the sleeves after adjustment by soldering. The crystal surface may be prepared by lapping with fine abrasive, then chemical or electrolytical etching. Specification 632,980 is referred to.
Patent GB-912020-A (GB)
Title: Rotary synchronous clutches
Inventor: BASEBE ARTHUR CECIL
IPC: F16D23/10
Filed: 1959-11-07
Abstract: 912,020. Ratchet clutches. S.S.S. GEARS Ltd. Nov. 1, 1960 [Nov. 7, 1959], No. 37834/59. Class 80 (2). In a synchro-self-shifting clutch, movement of an intermediate member 5 along helical splines 4 on a shaft 3 to engage clutch teeth 8 on the intermediate member with teeth 2 on a clutch member 1 is initiated by two pawl-andratchet mechanisms. Primary pawls 9 are carried by the clutch member 1 and are spring- biased into engagement with the teeth 8, and are centrifugally disengaged at a predetermined speed. Secondary pawls 14 are carried by the intermediate member 5 and are centrifugally engageable with ratchet teeth 15 carried by the clutch member 1. The speed at which the pawls 14 engage may be below that at which pawls 9 disengage. The pawls 9, 14 are oppositely directed so that the clutch is engaged by either set for the same direction of relative rotation between the clutch parts. The primary pawls 9 are slightly longer than the secondary pawls 14 so that if both sets are engaged the primary pawls initiate the clutch engagement. The pawls 14 may be held out of engagement below the desired speed by springs, and a lip member 18 may be associated with the ratchet teeth 15 and contain an annulus of oil which moves over the backs of the pawls and holds their noses clear of the teeth 15 when they are not engaged centrifugally. In a modification the pawls of both sets are tail heavy instead of nose heavy, and in this case the primary pawls are carried by the intermediate member and the secondary pawls by the clutch member 1.
Patent GB-848749-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C12P33/00
Filed: 1958-11-25
Abstract: The invention comprises 17-acylates of 1-dehydro-17a -hydroxyprogesterone in which the acyl group is that of a hydrocarbon carboxylic acid containing from 1-12 carbon atoms and a process for the production thereof which comprises dehydrogenating 17a -hydroxyprogesterone-17-acylate to obtain the 1-dehydro-17a -hydroxyprogesterone-17-acylate.  Dehydrogenation may be effected by means of a microorganism, e.g. Septomyxa or Fusarium, or by means of selenium dioxide.  Illustrative products of the invention are the 17-acetate, 17-docenoate, 17-benzoate and the 17 - cyclohexylacetate of 1 - dehydro - 17a  - hydroxy-progesterone.ALSO:17-Acylates of 1-dehydro-17a -hydroxyprogesterone in which the acyl group is that of a hydrocarbon carboxylic acid containing 1-12 carbon atoms are employed in pills, tablets, capsules, solutions, syrups or elixirs for oral use, or in liquid forms which are adaptable to the natural and synthetic cortical steroid hormones for injectable products.  The compounds may be used in conjunction with coacting antibiotics, germicides or with other hormones.
Patent GB-958147-A (GB)
Title: Improvements in or relating to revolving sprinkler apparatus for dealing with sewage
IPC: C02F3/04
Filed: 1961-10-24
Abstract: 958,147. Friction gearing. AMES CROSTA MILLS & CO. Ltd., and J. F. BOLTON. Jan. 3, 1963 [Oct. 24, 1961], No. 37991/61. Heading F2Q. [Also in Division B2] Power driving means for revolving sprinkler apparatus comprises a cylindrical track 11 detachably mounted upon and beneath radial distributing arms 5 and gripped between an idler wheel 25 and a friction wheel 22 driven by an electric motor 18 which is mounted on a fixed concrete support 14 within the inner periphery of the filter bed 7. A double reduction worm gear-box 17, driven by the motor 18, is mounted upon a baseplate 19 having dependent flanges 20 pivoted upon opposite ends of a shaft 16. An inverted U-shaped frame 23 carrying the idler wheel 25 is also pivotally mounted on the shaft 16 and connected to the gear-box 17 by a bowspring 27 and an adjustable bolt 28. The track 11 may be formed of rolled angle bar or by bracketing a cylindrical track to a flat annular attachment plate. Alternatively, a dependent flexible track of rubber or plastic material, with or without a fabric reinforcement, may be attached to a relatively narrow vertical flange of an angle-section ring. The surface of the friction wheel may be crowned.
Patent GB-1374904-A (GB)
Title: Chain link assembly for grate conveyor
IPC: F27B21/06
Filed: 1972-08-15
Abstract: 1374904 Travelling grates ALLIS-OHALMERS CORP 15 Aug 1972 [1 Sept 1971] 38018/72 Heading F4B A chain-link assembly forming part of a grate conveyer comprises a chain link 36 pivotally connectable to other links in the conveyer, and a separate, non-integral cover member 50 mounted in overlying relationship to the link 36. The link 36 comprises two side members 38 forming a yoke 40, and the members 38 converging at the other end to form a neck portion 42, with a bearing passage 46, the neck portion 42<SP>1</SP> of one link being received in the yoke portion 40 of another link. The cover member 50 is formed with a plurality of slotted passageways 54 which permit the passage of gases therethrough. The chain-link assembly forms part of a conveyer 10, the two assemblies 14A, 14B conveying the grate formed by grate members 12A, 12B, 12C.
Patent GB-1123185-A (GB)
Title: Process for the manufacture of textured yarn and apparatus therefor
Inventor: YAMAMOTO MAKOTO
IPC: D02G1/16
Filed: 1965-09-07
Abstract: A fluid nozzle for entangling the filaments of a multifilament yarn and forming loops in the filaments comprises a chamber having a yarn inlet, a fluid inlet, a yarn exit through which most of the fluid leaves the chamber, and a further separate fluid exit.  The chamber is formed by grooves in two nozzle members, one member being fixed and containing the fluid inlet which extends at an angle to the chamber, and the other member being hinged to the fixed member and being pivotable by an electromagnet against a spring bias to open the nozzle.  The yarn inlet is situated at one end of the chamber and is formed in one embodiment by grooves in parts screwed respectively to each member there being two separate fluid exits formed by grooves between each member and the part secured thereto, and in a second embodiment by a guide pipe screwed to the fixed member with the separate fluid exit formed by a gap between the pipe and the pivotable member.  A baffle plate may be mounted opposite the yarn exit.  Movement of the electromagnetic armature to close the nozzle also causes a fluid cock to open to supply fluid - e.g. compressed air - to the nozzle.
Patent GB-331801-A (GB)
Title: Improvements in or relating to the arrangement and disposition of motors on aircraft
IPC: B64D27/00
Filed: 1929-12-12
Abstract: 331,801. Renault, L. Feb. 7, 1929, [Convention date]. Propelling; planes, construction of.-A radial cylinder engine is arranged horizontally within the leading edge of a wing and its vertical shaft drives a horizontal propeller shaft 5 through gearing 4. A casing 7 with openings 8. 9 directs air from the propeller over the cylinders, and the carburettors 10 are supplied with air heated by its passage over the cylinders.
Patent GB-1112721-A (GB)
Title: 3-aminopyrazinoic acid n-oxide compounds and their derivatives
IPC: C07D241/30
Filed: 1965-09-07
Abstract: <FORM:1112721/C2/1> The invention comprises compounds of the Formula (I) in which X is hydrogen, chlorine, bromine, C1- 5 alkyl, trifluoromethyl, C3- 6 cycloalkyl, mononuclear aryl, C1- 5 alkoxy, C1- 5 alkylthio, phenyl-substituted C1- 5 alkylthio, C1- 5 alkylsulphonyl, phenyl-substituted C1- 5 alkylsulphonyl or di-(C1- 5 alkyl) amino and Z is hydroxy, C1- 5 alkoxy, amino, C1- 5 alkylamino or hydrazino.  The alkyl esters (Z = C1- 5 alkoxy) are prepared by reacting a 2-R5-6-X-4H - pyrazino - [2,3 - d][1,3] oxazin - 4 - one 8-oxide, in which R5 is hydrogen, alkyl or phenyl-substituted C1- 5 alkyl, with a C1- 5 alkanol or, when X = X11 = hydrogen, chlorine, bromine, trifluoromethyl, C1- 5 alkyl, mononuclear aryl, C1- 5 alkylsulphonyl or phenyl-substituted C1- 5 alkylsulphonyl, by direct oxidation of the corresponding alkyl 3-aminopyrazinoate esters. The acids (Z = OH) are prepared by treating a 3-R6-6-X-4(3H) pteridinone 8-oxide, in which R6 is C1- 5 alkyl, with a dilute alkali, followed by acidification or, when X = X11, by hydrolysis of the corresponding esters or, when X is C1- 5 alkylsulphonyl or phenyl-substituted C1- 5 alkylsulphonyl, by oxidizing a corresponding compound in which X is C1- 5 alkylthio or phenyl-substituted C1- 5 alkylthio.  The amides (Z = amino or alkylamino) are prepared by reacting a corresponding alkyl 3-amino-pyrazinoate ester 4-oxide with ammonia or an alkylamine or, when X = X11, by oxidizing a 3-amino-6-X11-pyrazinamide. The hydrazines (Z = hydrazino) are prepared by heating a corresponding alkyl 3-aminopyrazinoate ester 4-oxide with hydrazine.  3 - Amino - 6 - X11 - pyrazinamides of Formula (II), in which R6 is H or C1- 5 alkyl are prepared by reacting a corresponding alkyl ester with ammonia or a C1- 5 alkylamine.
Patent GB-888036-A (GB)
Title: Improvements in and relating to a control mechanism
IPC: F15B11/12
Filed: 1959-11-11
Abstract: 888,036. Change-speed gears. TATRA, NARODNI PODNIK. Nov. 11, 1959 [Nov. 13, 1958], No. 38313/59. Class 80 (2). A pneumatic actuator for a change-speed gear comprises a main piston 4 and rod 10 working in a cylinder 5, and an auxiliary piston 1 provided with a throttle passage 2 and slidable on rod 10, the main piston 4 carrying a sealing washer 3. In the end position shown in Fig. 1 passage 2 is closed by seal 3 and on admitting air through inlet 7 both pistons move to the right until, in the neutral position, a flange on auxiliary piston 1 engages the end of a liner 6. The air is then admitted to main piston 4 through passage 2, the transition period while the air pressure rises in a chamber 14 between the pistons enabling synchronizing to be effected, after which piston 4 moves more slowly to the right to effect gear shift. Return movement is effected by admitting air through a second inlet 8, there being no rest in the neutral position.
Patent GB-1016847-A (GB)
Title: Improvements in regulating systems for generators
IPC: H02J7/16
Filed: 1962-10-10
Abstract: 1,016,847. Automatic voltage control. ROBERT BOSCH G.m.b.H. Oct. 10, 1962 [Oct. 21, 1961], No. 38353/62. Heading G3R. In a generating system for a motor vehicle a direct currant generator comprises a threephase alternator having windings star-connected stator 11-13 and a field winding 14 on a rotor, not shown; the output of the stator windings is rectified by a full-wave rectifier 16, 17 and fed to an accumulator 18. The field winding 14 is connected in series with the emitter-collector circuit of a power transistor 23 controlled by a transistor 24 responsive to the difference between a reference voltage across a Zener-diode 25 and a voltage at a tapping 26 on a potentiometer 27 connected across the generator output. The output voltage of the generator is maintained constant by the transistor 24 being alternately rendered highly conductive and non-conductive by the transistor 24, the transition from a conductive to a non-conductive state being accelerated by the charging of a condenser 34 through a resistor 33. To protect the transistor 23 against partial or complete short-circuit of the field-winding 14 a protective circuit comprises a transistor 40, connected as shown, which becomes conductive when there is a high negative potential at the collector of transistor 24 and at the collector of transistor 23. This condition is only satisfied when the transistor 24 is blocked, due to low generator voltage, and the resistance of field winding 14 is shunted by a short-circuit, when transistor 40 is conductive, the voltage drop across an emitter resistor 43 causes transistor 24 to become partially conductive and reduce to base current of the transistor 23 to reduce the collector current under the short-circuit conditions.
Patent GB-1470588-A (GB)
Title: Windscreen wiper device for automobile vehicles
IPC: B60S1/08
Filed: 1974-09-03
Abstract: 1470588 Windscreen wipers DUCELLIER & CIE 3 Sept 1974 [20 Sept 1973] 38373/74 Heading A4F A vehicle windscreen wiper system comprises a reduction gear 1 driven by means, e.g. an electric motor, energized by two electrical circuits controlled by switches 20, 21a Fig. 4, (not shown), respectively, one actuated by the vehicle user and the other by a rotary crank 7 rotated by the reduction gear 1, and which via a linkage oscillates a wiper arm. A peripherally grooved rotor 4 is rotated with the reduction gear 1 and surrounded by a member 8, 9, which, to park the wiper, is pivoted about an axis 15 eccentric to the rotor 4 to displace a rod 5 slidably mounted in the rotor 4 and secured to the shaft 6 carrying the crank 7, the effective crank radius being thereby altered. The member 8, 9, is pivoted by a cable 11 actuated by the vehicle user, the actuation opening one of the switches (21a) so that when the crank 7 opens the other switch (20) the wiper motor is de-energized with the wiper in parked position.
Patent GB-826642-A (GB)
Title: Improvements in lathes and like machine-tools having copying mechanisms
IPC: B23Q35/18
Filed: 1956-12-18
Abstract: 826,642. Copying-lathes. WARNER & SWASEY CO. Dec. 18, 1956 [March 13, 1956], No. 38534/56. Class 83 (3). Lathe or like machine-tool comprises relatively movable support members for the tool and work, a pattern-slide and stylus, a pair of locking devices operatively associated with the pattern-slide and adapted for automatic releasable connection with one of said support members, after predetermined relative movement of the support members, for causing relative movement between the stylus and a pattern device. The tool (in the particular example a boring tool), is held in a member 15 carried by an inclined slide 13 supported on a bracket 14, secured in one of the tool-holder sockets of a turret C. The slide 13 carries a stylus 21 which controls an hydraulic copying arrangement, (not described) for feeding the slide. The follower cooperates with a pattern 18, Fig. 2, adjustably secured to a slide 25 which is slidably guided on a base 26 fixed to the rear of the bracket 14. The slide 25 has an upwardly projecting housing 35, Fig. 8, which contains thrust bearings 42, 43 and a spring-pressed ball 45, which anchors a shaft 36 axially, but permits limited rotation relative to the housing, between the dimples 47, 48 on the shaft. The ends of the shaft 36 are provided with earn members 37, 38, which engage pins in recessed bushes 55, 50, Figs. 1 and 2, respectively, the first bush being adjustably mounted on the pilot bar 56 carried by the headstock, and the second bush being mounted on the base 26. Operation.-On forward feed movement of the saddle carrying the turret C, the bracket 14, base 26, and slide 25 move along, together with the shaft 36. When the forward cam member 37 of the latter engages pins in the sleeve 55, the shaft 36 is rotated to free its rear end from the bush 50. The slide 25 is thus halted, and the copying action commences with continued movement of the tool and stylus, with the pattern on the slide 25 held stationary. On return movement of the turret, the slide 25 remains anchored to the bush 55 until the rear bush 50, moving back with the base 26 and turret, engages the rear cam member 38 of shaft 36. The latter is thus rotated and disengages the forward cam member 37 from bush 55, so that the slide 25 is then moved back, with the turret and tool. A bracket 85 is provided to support the flexible fluid lines to the copying device. Specification 826,643 is referred to.
Patent GB-345656-A (GB)
Title: Improvements in quilling machines
IPC: B65H54/14
Filed: 1929-12-17
Abstract: 345,656. Lubricating. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany.) Dec. 17, 1929, No. 38628. [Class 12 (iii).] The mechanism of a yarn-winding machine is lubricated by oil thrown up by the driving wheels which dip into an oil trough, the latter being kept filled from a well by means of a wheel and scraper. The gears 40 dip into oil contained in the trough 6, which extends longitudinally of the machine. The trough is kept filled from the well 8 by the gear wheel 24 which dips into the well, oil being scraped off the wheel and led into the trough through a shoot 58. Excess oil drains back into the well.
Patent GB-1193512-A (GB)
Title: Sheet Separator
IPC: G06K13/103
Filed: 1967-08-23
Abstract: 1,193,512. Feeding sheets. RANK XEROX Ltd. 23 Aug., 1967 [23 Aug., 1966], No. 38854/67. Heading B8R. The lowest sheet of a stack is fed to a machine 50 through driven feed roller pairs 46 and 48 by an automatically cycled mechanism which bends the sheet at the leading edge before pushing it at the trailing edge. The bending operation is effected by a reciprocable member 34 having a sheet engaging pad 56 of resilient material which is operated by a rotatable disc 58 driven in timed relation to a picker knife 24 which thrusts the bent sheet into the bite of the feed roller pair 46. After processing in the machine 50 the cards are successively returned to a lower magazine 15 through rollers 48 and 62, the sheet supporting surface 66 of the magazine being upwardly biased by a spring 70. In a second embodiment of the invention the automatic cycled mechanism comprises a timer belt linking eccentrically mounted cams operating on pusher rods.
Patent GB-1000696-A (GB)
Title: Improvements in or relating to cutting apparatus
IPC: B26D1/40
Filed: 1962-10-15
Abstract: 1,000,696. Cutting webs. MOLINS ORGANISATION Ltd., and E. S. DOERMAN. Oct. 14, 1963 [Oct. 15, 1962], No. 38924/62. Heading B4B. [Also in Division A2] A rotatable cutting device comprises a cutting member having cutting edges, a rotatable drum 6 in which the cutting member is rigidly mounted, a counter surface against which the cutting member cuts, a shaft 5 about which the drum rotates and a diaphragm 7 connecting the drum 6 to the shaft 5, the diaphragm being capable of flexing so as to permit the drum to rotate about an axis transverse to that of the shaft whereby the cutting edge is aligned with the counter surface. The shaft 5 has a flange 8 and stepped portions 9, the side of the flange 8 adjacent the portion 9 being slightly relieved on its face 10. Spacing rings 11 and 12 fit over the portion 9 and hold the diaphragm 7, the assembly being secured by a locking sleeve 13. The face of the sleeve 13 adjacent the diaphragm 7 is also relieved at 10a. Further spacing rings 14 and 15 hold the periphery of the diaphragm, the rings being held together by abutment against a locking nut 17, secured to the drum 6 by screws 18, and an internal face 16 of the carrier 6 respectively. The diaphragm 7 allows flexing of the carrier 6 within the limits set by the relieved faces 10 and 10a. The shaft 5, which is capable of bending slightly, is mounted in eccentric bearings 24 and 25.
Patent GB-1198627-A (GB)
Title: Improvements relating to the Control of Burners.
Inventor: HODGKISS SAMUEL JOHN
IPC: F23N5/08
Filed: 1966-09-01
Abstract: 1,198,627. Controlling burners. EVERED & CO. Ltd. 25 Oct., 1967 [1 Sept., 1966], No. 38971/66. Heading F4T. A burner control system has a main switch S1 a switch S2 controlled by a clock or a thermostat and a cut-out switch 12 having normally closed contacts S3 which are opened by a device such as a bi-metal strip after an electrical heating element R4 has been operating for a predetermined time unless a photo-resistor R1 sensing the pilot burner flame allows current to pass to the electrode of a controlled rectifier or thyristor CR and allow the solenoid L2 of the main burner fuel valve to be energized, and a reed switch S4 energized by the field of the solenoid L2 then opens to de-energize the heater R4 and the igniter 14. Switch 12 locks out when opened and must be manually re-set. In alternative circuits transistors are used instead of a controlled rectifier.
Patent GB-1274764-A (GB)
Title: Polyester resins
IPC: C09D167/08
Filed: 1969-08-05
Abstract: 1,274,764. Coated substrates. BALM PAINTS Ltd. 5 Aug., 1969 [8 Aug., 1968], No. 39078/69. Heading B2E. [Also in Division C3] Substrates are coated with an unsaturated polyester resin composition comprises a condensation polymer of a polybasic carboxylic acid and a polyhydric alcohol which polymer also contains an antioxidative polyunsaturated hydrocarbon moiety (i.e. a hydrocarbon chain which contains at least two carbon-carbon double bonds and which in the presence of oxygen spontaneously forms hydroperoxides, and from 10 to 80% by weight based on the polymer of α, #-ethylenically unsaturated monomer in which the polymer is soluble, the polybasic carboxylic acid comprising at least 15 mole % of pumaric acid and being essentially free of α, #-ethylenic unsaturated other than that provided by the fumaric acid, and the condensation polymer comprising from 15 to 65% by weight based on the polymer of antioxidative polyunsaturated hydrocarbon moieties of at least 18 covalently linked carbon atoms chain length. In the Examples steel panels are coated.