baber/WOPTO huggingface dataset:
Patent GB-1216871-A (GB)
Title: Bisected diode loaded line phase shifter
Inventor: HYLTIN TOM MARTIN
IPC: H01P1/185
Filed: 1968-02-01
Abstract: 1,216,871. Phase-shifters. TEXAS INSTRUMENTS Inc. 1 Feb., 1968 [2 May, 1967], No. 5155/68. Heading H1W. A diode-controlled phase-shift network comprises a transmission line having an input/output end and a reflective end, the network being loaded by shunt circuits including diodes which determine the reactances of the shunt circuits. Fig. 2 shows a three-bit network suitable for binary control comprising a quarter-wave line 32 and an eighth-wave line 34 connected in tandem, the free end of line 34 being (normally) open-circuited and the free end of line 32 affording an input/output terminal 31. Line 32 is shunted at either end by circuits 47, 53 which comprise diodes 48, 54 and inductors 50, 56, these networks having a capacitive reactance when the diodes are biased "off" and an inductive reactance when the diodes are "on". The difference in phase-shift between the two conditions is arranged to be 90, i.e. 45 for the forward-going wave and 45 for the reflected wave. A diode control circuit comprises R.F. by-pass capacitors 52, 58 and an input terminal #2 connected to a binary digital logic circuit. Thus, raising input #2 from logic level "0" to level "1" increases the phase-shift of the network by 90. The "open" end of line 34 is shunted by circuit 59 comprising diode 60 and inductance 64, these being so selected that, when the diode is biased "off", network 59 appears as an open circuit, and when the diode is "on", the circuit appears as a short-circuit. Thus, circuit 59, controlled by logic input #1, provides a phaseshift of 180. Eighth-wave line 34 and shunt circuit 38 are the equivalent of half of the circuit comprising quarter-wave line 32 and shunt circuits 47, 53. Diode 42 and inductance 44 are selected such that logic input #3 controls a phase-shift of 45. By operating inputs #1, #2, #3 in a binary fashion the phase-shift of the network may be increased from 0 (nominal) to 360 in steps of 45. The circuit is formed on a substrate 80 of P-type silicon or GaS having a resistivity greater than 1500 ohm.-cm. Upon this substrate are deposited in turn: a metal layer 82, then an overlapping dielectric layer 84 of, e.g., silicon dioxide or tantalum oxide, and finally a patterned electrical layer comprising lines 32a, 34a, inductors 50a, 56a, 44a, 64a and the electrodes of capacitors 52a, 58a, 46a, 66a, 62a. Planar PIN diodes 48a, 54a, 42a, 60a are formed in the surface of the semi-conductor substrate by diffusion. The back of the substrate is coated with an insulating layer and a metal ground plane which is conductively connected to exposed areas 82a, 82b, 82c of the metal layer 82
Patent GB-548810-A (GB)
Title: Improvements in electric circuit-breakers having arc-extinguishing arrangements
IPC: H01H9/46
Filed: 1941-04-22
Abstract: 548,810. Arc-rupturing in switches. REYROLLE & CO., Ltd., A., COATES, F., and TIPLADY, J. April 22, 1941, No. 5172. [Class 38 (v)] In an air-break circuit-breaker of the kind in which an arc is driven along arc horns in an arc chute and inserts resistance into the circuit the horn D is itself a strip of resistance material bent to provide arcing points D<SP>1</SP> separated by gaps F, the points being preferably reinforced by additional arc-resistant material D<SP>2</SP>. The chute may be of rectangular cross-section with the sides either parallel, Figs. 1 and 2 (not shown), or converging towards the upper end, Figs. 3 and 4 (not shown). The latter arrangement is employed in Fig. 5 in conjunction with divergent end-walls. The arc-movement may be produced by an air-blast or by a magnetic field selfinduced in a magnetic band C.
Patent GB-848758-A (GB)
Title: Rinsing arrangements for the bearing of the vane wheel in a liquid flow meter
IPC: G01F1/06
Filed: 1957-02-15
Abstract: 848,758. Bearings. PRESNA MECHANIKA NARODNY PODNIK, and SALAMON, K. Feb. 15, 1957 [April 9, 1956], No. 5232/57. Class 12 (1). [Also in Group XXVI] A rinsing arrangement for the bearing of a vane wheel 5 of a liquid flow meter, consisting of a thrust bearing 11 and a cylindrical journal bearing 7 mounted on a fixed stub shaft 12, comprises recesses 13 in the top of the bearing 7 providing communication between the bearing surfaces and a space above the wheel. Fluid passes through openings 16 in the wheel 5. An increased rinsing effect is obtained by arranging the recesses 13 tangential to the bearing surface of the bearing 7.
Patent GB-1568543-A (GB)
Title: 2-amino-or acylamino)-1-sulphonyl-benzoimidazole derivativves
IPC: C07D235/30
Filed: 1977-02-09
Abstract: Sulphonylbenzimidazole derivatives of formula <IMAGE>  wherein R2 represents <IMAGE> and the substituents R, R5 and R6 are defined in Claim 1, are prepared by reacting a corresponding sulphonylbenzimidazole which instead of the substituent R2 has a group <IMAGE> with a C1-C7-alkyl-magnesium halide or C1-C7-alkyl-lithium and then performing a hydrolysis. Dehydration of the compounds of formula I gives compounds which contain the group <IMAGE> The compounds prepared may be used for the control of viruses.
Patent GB-208947-A (GB)
Title: Improved construction of snap or catch fastener applicable to jewel cases and the like
IPC: E05C19/06
Filed: 1923-02-23
Abstract: 208,947. Cheney, C. W. Feb. 23, 1923. Catches, spring.-Snap fastenings for jewel-cases and other small boxes, of the type comprising an L-shaped resilent strip of which the vertical limb carries the catch and an operating push - button, are provided with a second spring limb to which the push-button is attached. The L-shaped spring member e has limbs e<2>, e<3>, the limb e<2> having the catch e<4> which co-operates with the member h on the lid, and the limb e<3> lying along the bottom of the case and being attached thereto at e<5>. The second limb f in the example shown is formed by stamping out from the member e and is integral therewith at a point just below the catch e', and its end is free and slides under the raised part e of the member e. The push-button g is attached directly to the limb f, and on pressing the button g for release, the limb f is first moved, causing movement of the limb e<2> to release the catch. This arrangement ensures greater resiliency and easier motion of the button
Patent GB-556820-A (GB)
Title: Improvements in or relating to variable-pitch propellers for aircraft
IPC: B64C11/42
Filed: 1942-04-20
Abstract: 556,820. Centrifugal separators. BRISTOL AEROPLANE CO., Ltd., . and CREIGHTON, C. R. April 20. 1942, No. 5266. [Class 23] [Also in Group XXXIII] In a variable-pitch airscrew in which changes towards coarse pitch are effected by highpressure fluid acting on one side of a piston, and changes towards a low pitch are effected by centrifugal force and low-pressure fluid acting on the other side of the piston, both pressure fluids are subjected to a centrifuging action during rotation to separate out air which is then directed along a common path to a point of discharge. In the form shown, the low pressure fluid is derived from the lubricating system of the engine and flows through a tube 13 to the front of the piston 2. The engine oil also passes through the duct 6 of a constantspeed unit 7 to a booster pump 8 from which it passes as the high pressure fluid to a tube 14 surrounding the tube 13 and leading to the rear of the piston 2. The tube 13 is perforated at 20 and the air is centrifugally separated into an axial stream 21 which is discharged into the crankcase. When all the air has been expelled from the hydraulic system, high pressure fluid will seep through the perforations 20 and the circulation set up is assisted by bleed-holes 22 in fhe piston 2
Patent GB-564755-A (GB)
Title: Improvements in optical comparators or indicating instruments
IPC: G01B11/02
Filed: 1943-04-05
Abstract: 564,755. Optical systems aparatus. COOKE, TROUGHTON, & SIMMS, Ltd., and TAYLOR, E. W. April 5, 19@@ No. 5429. [Class 97 (i)] [Also in Group XIX] In an optical comparator, an i@ of a scale or mark is produced' e plane of the scale or mark by @ is of a spherical concave mir@ @ngularly displaceable accordi @ a linear dimension of an obje@ @eing gauged; the scale and its im@ @ay be inspected through an @eye e, or an image thereof may be pro@ d on to a screen. As shown, @auge anvil is secured to the lowe@ of a plunger 5 pressed downwards @ by a spring 8 to the limit permitted by a stop shoulder 9. A hardened tip at the top of the plunger contacts a hardened insert 19 in a mount 16 carrying a spherical concave mirror 23, the mirror mount 16 being carried by crossed blade springs 17 forming a pivot about which the mount may be turned against the pull of a spring 21. A scale on a glass plate 31 in a plane containing the centre of curvature of the mirror 23 is illuminated by an external light source, mirror 27, lens 28, and prism 29, and the scale and its image are projected by a lens 32, prism 33, 34 and concave lens 35, to a projection screen 20 within a viewing hood 20a. The anvil and plunger may be raised by hand through a lever 14, and may be adjusted in position by a screw 30 ; fine adjustments for the positions of the mirror and scale plate are described in detail.
Patent GB-287133-A (GB)
IPC: C01D9/04
Filed: 1928-02-21
Abstract: 287,133. Kali-Industrie Akt.-Ges., Thorssell, T., and Kristensson, A. March 16, 1927, [Convention date]. Nitric acid.-In the production of potassium nitrate from potassium chloride using nitric acid of up to 35 per cent. strength, the mother liquor, after separation of the solid nitrate formed, is treated with ferrous chloride or copper, to reduce its content of nitrogen compounds to nitric oxide, which is driven off and converted to nitric acid for further use. Excess of nitric acid may be used and the mother liquor be cooled intensely, say to -20‹ C., before the reduction step to separate the potassium nitrate as completely as possible. The cooling may be effected first by cold mother liquor from a preceding operation and then by a freezing liquid or by the addition of ice; in the latter case the amount of water present in the decomposition step should be reduced. Potassium chloride may be added during the cooling step, the mixture thereof with potassium nitrate which then separates out being used in the decomposition step of the process. When ferrous chloride is the reducing agent used, the exact quantity required is mixed with the mother liquor preheated, if necessary, to 60-70‹ C., and the mixture boiled by steam in a column or retort: in the latter case the ferrous chloride is added gradually as the reduction proceeds. The solution resulting from the reduction may be treated to distil off hydrochloric acid, and the ferric chloride be reduced to ferrous chloride for re-use by iron turnings, sulphuretted hydrogen, or sulphurous acid; or if it contains little hydrochloric acid, two-thirds of it only may be taken and be reduced directly.
Patent GB-432421-A (GB)
Title: Improvements relating to sporting shirt, day shirt, uniform shirt, or such like article of dress
IPC: A41F5/00
Filed: 1935-02-21
Abstract: 432,421. Shirts. VIERDAG, H., 33, Beltstraat, Enschede, Holland. Feb. 21, 1935, No. 5583. Convention date, Feb. 21, 1934. [Class 141] A shirt of the kind with which braces, concealed inside the shirt, are used for supporting the trousers is provided with non-elastic tabs 2, 3, sewn at their lower ends to the inside of the shirt at the waist, there being buttonholes 8 passing through both the shirt and the lower ends of the tabs for engagement with buttons on the inside of the waistband of the trousers. The upper ends of the tabs are detachably connected to braces, 5, 6, which pass through loops 7 at the shoulders of the shirt and are readily removable therefrom. The straps of the braces are adjustable and may be wholly elastic, or elastic only at their bottom ends with shoulder parts of linen.
Patent GB-868512-A (GB)
Title: Electrical heating apparatus
IPC: F24H7/00
Filed: 1959-02-18
Abstract: 868,512. Electric heating apparatus. CLAMP, J. R. Feb. 17, 1960 [Feb. 18, 1959], No. 5603/59. Class 39(3). Electrical heating apparatus for the heating of rooms, corridors &c. comprises one or more refractory carrier units 1 Fig. 1 having beads or mouldings 3, 4 and troughs 5, 6 and one or more refractory cover units provided with corresponding beads or mouldings 8, 9 and troughs so that electrical heating elements 14 can be located in the troughs of the carrier or carriers and thereafter concealed and retained in position by the cover unit or units whose beads and troughs coact with the beads and troughs of the carrier unit or units. Members 1, 2 may be of fireclay or ceramic and member 1 has a hole 7 for a fixing screw. The units can be laid side by side or back to back in the same room or on opposite sides of a wall or partition. The top cover 2 can be shortened to accommodate a wall or partition, Fig. 2 (not shown). The device may be angled to place it in a corner, or it may be angled or curved in the opposite' direction. The blocks 1, 2 can.be glazed in one or more colours. The current supply is controlled by a time switch or thermostatic apparatus. Block 2 may be cemented to or rest on block 1 and block 1 may be of cement. Blocks 1, 2 may be extended in the horizontal, vertical or in both directions.
Patent GB-1205730-A (GB)
Title: Improved kneading and/or mixing machine
IPC: B29B7/48
Filed: 1967-12-21
Abstract: 1,205,730. Screw and roller mixers. BAKER PERKINS Inc. 21 Dec., 1967 [12 Jan., 1967], No. 5609/70. Divided out of 1,200,919. Heading B1C. A mixing apparatus has two co-rotating shafts 16, 17 on which are mounted lenticular paddle sections 18', 19' having helical crests and angularly offset so that their crests form continuous helices 34. There are advancing screw sections 32, 33 and in a discharge housing 35 there may be discharging screws 36, 37, reverse screw sections 38, 39 and non-pitched lenticular paddle sections 18", 19" immediately opposite a radial discharge opening 40. All the paddle sections are self-cleaning and also wipe the walls of the housing 10..An opening 41 enables water to be removed when kneading filter-cake. The housing 10 may have a temperature control jacket.
Patent GB-1134173-A (GB)
Title: Abnormal pressure indicator for pneumatic tyres
IPC: B60C23/06
Filed: 1966-02-09
Abstract: 1,134,173. Visible signalling circuits. L.B. SAFETY DEVICES Inc. 9 Feb., 1966 [18 Feb., 1965], No. 5613/66. Heading G4F. [Also in Divisions G1 and H3] Low type pressure on a moving vehicle produces unbalance vibrations which are detected by electromagnetic transducers, one for each wheel, mounted on a stationary part of a respective brake housing, Fig. 1 (not shown). Each transducer 10 (Fig. 2) comprises fixed permanent magnets 28, 30 and a movable magnet 34 suspended by mutual repulsion between them. The magnets are within a coil 36 contained in a housing secured to the brake housing plate and axle assembly. Vibration of a wheel produces relative reciprocating movement of the magnet 34 and a voltage output from the coil 36. The output voltage from each transducer is fed to a respective silicon controlled rectifier switch 64 (Fig. 5) whereby if the amplitude of vibration and hence the voltage is sufficient the rectifier will conduct. A pulsed voltage is produced by a conventional multivibrator 71, or by a unijunction transistor oscillator, Fig. 6, not shown, from the vehicle battery, which produces a flashing light from a warning lamp 20 (one lamp for each wheel) when its associated S.C.R. switch conducts, indicating low pressure in a particular wheel. In an alternative arrangement. Fig. 7 (not shown), the transducer voltage when sufficiently high causes a transistor switch (92) to conduct, causing a current of increasing amplitude to flow from the battery through a transformer primary. A resulting secondary voltage is rectified and charges a capacitor (94). When the capacitor voltage is high enough a neon lamp is ignited. When the current stops increasing the lamp is extinguished, and the flashing rate is a function of the vibration frequency of the transducer 10. The sensitivity of the-apparatus is adjustable so that the lamps are extinguished under normal tyre pressure and speed conditions. Since vibrations due to wheel unbalance, and not attributable to tyre pressure abnormalities, are also detectable and will actuate the warning lamps, the sensitivity adjustment is made after the wheel has been balanced.
Patent GB-608428-A (GB)
Title: Improvements in cinder sifters
IPC: F24B15/00
Filed: 1946-02-23
Abstract: 608,428. Sifting-apparatus. WADE, W. L. Feb. 23, 1946, No. 5664. [Class 117] A cinder - sifting attachment to a bucket comprises an arcuate - shaped wire mesh sifter forming a hood for the bucket and adapted to fit closely a part or the whole of the rim, whereby the contents of' the bucket may be sifted when the bucket is tilted. As shown in Fig. 1, a sifter 1 is provided with hook attachments 3 for engaging in holes 4 in a bucket 5. In a modification, the sifter is permanently and pivotally secured to the bucket so that it may be raised to the operative position above the bucket or lowered to a position substantially beneath the rim of the bucket. In the construction shown in Fig. 5, the sifter 8 is saucer-shaped and is pivoted at one side of the bucket, the opposite side being resiliently engaged by a snap-clip 10.
Patent GB-575585-A (GB)
Title: Gas heater with heating surfaces arranged on the walls of a combustion chamber
IPC: F28D7/06
Filed: 1944-03-28
Abstract: 575,585. Gas-heating furnaces. AKT.-GES. FUR TECHNISCHE STUDIEN. March 28, 1944, Nos. 5700 and 5701. Convention dates, March 29, 1943, and Nov. 26, 1943. [Classes 64 (i) and 64 (iii)] In a gas heater with heater elements arranged close to the internal surface of its combustion chamber, tubes 25, 26, Fig. 7, project into the combustion chamber 20 from at least one distributing header 23 and one collecting header 24 arranged above that chamber, and a plurality of small tubes 27 exposed to the heat from the fire in the heater connects each tube 25 connected to the first header 23 to one of the tubes 26 connected to the second header 24, to form a heater element. The tubes 27 may be omitted near the flue outlet. Those parts of the tubes 25, 26 that are without small tubes may be of smaller diameter than elsewhere. The tubes 25, 26 may decrease in diameter downwardly, either continuously or in steps, and the diameters of the tubes 27 may decrease correspondingly. The lower ends of the tubes 25, 26 may be joined by narrow U-shaped tubes 28 which may be accommodated in recesses 29 in a fireproof wall 22. The two arms of the tubes 28 may be connected by small tubes spaced further apart than on the tubes 25, 26. The tubes 25, 26 may be parallel or, as shown, convergent, and the tubes 26 may be of smaller diameter than the tubes 25. The ends of the small tubes opening into the tubes 26 may be flared. The small tubes are bent and arranged to protect the larger tubes from radiant heat. For example, the tubes connecting the tubes 14, 15, Fig. 5, may be bent as shown at 17<1>-17<4>, the U-bends being supported by the arms 17<1>. The distances between the small tubes may be less where the radiation is high than where it is lower. In the form shown in Fig. 10, the larger tubes 40, 41 are also protected by insulating material 44 inserted in the spaces between the small tubes 42<1>-42<3>, which are bent so that the ends of successive tubes join the tubes 40, 41 at point 120‹ apart in plan.
Patent GB-204269-A (GB)
Title: Improvements in and relating to portable buildings
IPC: E04B1/24
Filed: 1923-02-27
Abstract: 204,269. Ross, W. L. Feb. 27, 1923. Portable buildings; garages; summer-houses. -A portable building suitable for use as a summer-house or garage consists of angle-iron stringers and sills 10 with their upstanding flanges cut away at the corners and overlapping each other, and adapted to receive the angle-iron upright 12 which have one flange cut away at the ends and the other flange turned inwards to form a means of securing the whole together by a bolt. The tops of the uprights are adapted in a similar manner to receive top stringers and sills 16, 16<1> which bear the roof structure 17, 18, also formed of angle-irons. The panels are secured in place by inside angles 24, which, for strong structures, have longer flanges than the main angles and are adapted to be secured to strengthening bands 30 placed around the uprights, Fig. 3. The floor structure rest on the flanges of the bottom stringers and sills.
Patent GB-452446-A (GB)
Title: Improvements in or relating to telegraph transmitting apparatus
IPC: H04L12/06
Filed: 1935-02-22
Abstract: 452,446. Telegraph exchange systems. CREED & CO., Ltd., SALMON, R. D., and THOMAS, F. R., Telegraph House, Croydon. Feb. 22, 1935, No. 5729. [Class 40 (iii)] An " answer-back " device, which in a typeprinting telegraph system is provided to send out predetermined signals from a called station on receipt of a special signal from the calling station, comprises a motor driven shaft 36 which is released for rotation by the special signal and drives the shaft 25 through gearing 22, 23, 24, 27 at one sixth of the speed. A cam sleeve 33 co-operates with selector levers for setting the transmitter selector bars 3 said levers being lowered on to the cams before the transmission of each character by a further lever controlled by the cam 21. The transmitter releasing bar 17 is operated by a cam 18, the selector levers are returned to normal by cam 20, while cam 28 removes a lever from the path of the detent 10 on the lower shaft until the upper shaft has completed one revolution. The last mentioned lever is operated initially by the special signal and inter alia locks the transmitter keys. Cams 29, 30 afford an auxiliary control of the selector levers. The character cams 32 are accommodated in radial slots in the sleeve 33 and are individually removable by rotating a holding flange 34 provided with a single slot registering with any of those in the sleeve 33. Specification 351,018 is referred to.
Patent GB-248400-A (GB)
IPC: G03B33/08
Filed: 1926-03-01
Abstract: 248,400. Soc. Franþaise des Films HÚrault, Bombars, A., and Henry, F. Feb. 28, 1925, [Convention date]. Kinematograph apparatus; optical-projection apparatus.- Projectors for stationary or kinematographic images in natural colours are provided with shutters having arcuate slits to break up the projection period for each image. The shutter may comprise three slots 12, 13, 14 of equal length, exposing successively images 10<A>, 10<B>, 10<c>, or two sets of such slots. The slots may overlap and may be of unequal length. They may be of such width that two or more images or exposed wholly or in part simultaneously, and the shutter may be formed with a portion serving as a masking blade during the film shift and with portions serving as compensating blades. Several forms of shutter are described and illustrated in the Specification. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of the shutters in projectors for stereoscopic images. This subject-matter does not appear in the Specification as accepted.
Patent GB-1129465-A (GB)
Title: Method for oxidizing silicon
IPC: C01B33/113
Filed: 1966-02-09
Abstract: 1,129,465. Anodising silicon. CSF - COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Feb. 9, 1966 [Feb. 11, 1965], No. 5753/66. Heading C7B. Silicon is oxidised electrolytically using a bath comprising a neutral salt, such as potassium of sodium nitrate, and a non-aqueous solvent, such as N methylacetamide, to which water has been added in amount lower than 0À4% by weight of the solution. Preferably the solvent is dried before addition of water, e. g. by passing through a drying medium such as calcium hydride. The silicon piece may be held in the bath by a tantalum clip connected to the positive terminal of a D. C. source, the negative terminal being connected to a cathode e. g. of platinum.