baber/WOPTO huggingface dataset:
Patent GB-882640-A (GB)
Title: Measuring tool
IPC: G01B3/10
Filed: 1960-02-19
Abstract: 882,640. Measures of length. LJUNGBERG, T. A. Feb. 19, 1960 [March 18, 1959], No. 5945/60. Class 106 (2). A slide 16 can be displaced into a channelshaped guide 14 through which runs a steelmeasuring tape 7, so flattening the arcuate cross-section of the tape to force the tape's edges into engagement with the lateral edges of the guide, thereby locating the tape against displacement. The slide is normally positioned by a spring 19, with its downwardly-bent front end 17 in an intermediate position a in which the tape is merely frictionally held; but. by actuation of a lever 21, that end 17 may be moved, either to a position b in which the tape is further flattened and more securely held, or to a position c, in which the tape can slide freely in its guide. One end of the lever is pivoted in a hole 22 in a lug 23 on an extension 15 of the guide; and an aperture 25 between the ends of the lever is engaged by a pin 26 punched out from the slide. Measurements are made between lug 8 on the end of the tape and lug 9 on the case; and the tape may be graduated for the reading of measurements at the point X where the tape emerges from the case. Specification 693,092 is referred to.
Patent GB-1352086-A (GB)
Title: Heart pacers
IPC: A61N1/368
Filed: 1972-02-09
Abstract: 1352086 Heart pacemaker AMERICAN OPTICAL CORP 9 Feb 1972 [9 Feb 1971] 5973/72 Heading A5R A heart pacemaker provides both atrial and ventricular stimulation, and inhibition of only the ventricular stimulation upon detection of a natural heart-beat. The circuit is as shown in Figs. 1, 3 of Specification 1307912 with the exception of the omission of line (82) and components (T6') and (55'), so that the circuit of Fig. 3 forms a relaxation oscillator providing free-running atrial stimulation at a frequency which can be greater than, equal to, or less than, the ventricular demand frequency.
Patent GB-291169-A (GB)
Title: Improvements in thermionic valves
IPC: H01J19/42
Filed: 1927-03-04
Abstract: 291,169. Livermore, H. T., and Richmond, V. M. March 4, 1927. Vacuum tubes.-An anode 1 or grid, formed from a single plate bent oval or other shape, has sockets 2, 3, arranged alternately on the pair of meeting edges so as to enable the anode to be mounted in a single support 4. The support is bent-over at the end 6 and flattened at the part 5 so as to secure the anode. A lug 7 on the anode engages with a support 8. The grid 9 is provided with sockets 10, 11 in a similar manner. According to the Provisional Specification the anode or grid may be formed of two plates.
Patent GB-373289-A (GB)
Title: Improvements in or relating to mills for pulverizing minerals and other substances
IPC: B02C13/28
Filed: 1931-02-26
Abstract: 373,289. Impact pulverizers. ELLIS, M. I. WILLIAMS-, Plas Weunydd, Blaenau Festiniog, and FLEWIN, A. E., Bron-y- Aur, Aberglaslyn, Beddgelert, both in Merionethshire. Feb. 26, 1931, No. 6068. [Class 59.] In a mill of the kind described in Specification 13257/07, [Class 59, Grinding, crushing, &c.], the detachable shoes R at the extremity of the beater arms are inclined backward in relation to the direction of revolution of the arms, the angle of inclination being variable according to the speed at which the mill is to be driven. The chamber is provided with a side inlet or inlets H and with a radial outlet or outlets J controlled by valves K so that the number, size and position of the outlet can be regulated. A casing or lining E is provided with corrugations G which may be inclined to the axis of the mill and the beater arms Q are secured to a boss N which is fixed to a sleeve M on the driving shaft by shear pins P. The mill may be extended by removing a side plate and adding beaters Q and linings E, the beaters and linings being angularly advanced in respect of the existing beaters and linings. In a modification, Fig. 4, a screen T is provided in the side of the mill through which the fines are conveyed to an outlet W. Air is drawn into the mill through orifices S.
Patent GB-295558-A (GB)
Title: Improvements relating to pneumatic tyre valves
IPC: B60C29/06
Filed: 1928-02-27
Abstract: 295,558. Fischer, A., and Koch, F. Oct. 17, 1927, [Convention date]. Dust caps for tyre valves.- A valve cap is secured in position by an interrupted thread mechanism. The segmental nuts are formed on strips d housed in slots formed in spring fingers c held between an enlargement a<1> on the cap a and an encircling sleeve b. Flats l<1> are formed on the valve stem l to permit the cap being placed in position and auxiliary spring fingers e are arranged between the fingers c. The sleeve b is flanged at the top to engage the enlargement a<1> and at the bottom to support a rubber washer f. The fingers c may be dispensed with.
Patent GB-968288-A (GB)
Title: Improvements in or relating to signs
IPC: G09F19/12
Filed: 1962-02-16
Abstract: 968, 288. Temperature sensitive signs. J. E. DOOLEY. Feb. 1,1963 [Feb. 16,1962], No. 6099/62. Heading G5C.  A sign comprises a liquid whose light transmitting properties are temperature sensitive so that the sign is visible at one temperature and not at another. A front plate 10, intermediate plate 11, rear plate 12 and reflector 13 shown in Fig. 1 are secured together in a fluid tight manner to form a traffic warning sign. The legend I C E is cut through or into the plate 11, and when the plates are secured forms hollow cavities, which are filled with a liquid such as camphorated oil or ethyl salicylate which becomes cloudy at a low temperature, so that the word ICE stands out dark against a background illuminated naturally or by car headlights. Fig. 4, shows an embodiment in which the legend'is an embossing 10a on the front plate surrounded by the liquid. The liquid may become more transparent with fall in temperature, or alternatively one of its constituents or phases may crystalise, precipitate or change colour with fall in temperature. The sign may be artificially lit from behind, may be coloured, and may be applied to aircraft, refrigerators or advertising.
Patent GB-513159-A (GB)
Title: Improvements in and relating to the control of synchronous machines
IPC: H02J3/42
Filed: 1938-02-26
Abstract: 513,159. Electricity supply. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 26, 1938, No. 6144. Convention date, Feb. 27, 1937. [Class 38 (iv)] Synchronizing.-In an arrangement of the kind described in Specification 482,463, where the machine is run up to a suitable speed as an induction motor with the field short-circuited and then the resistance increased in order to reduce the time constant of the field discharge circuit, there is provided an improvement whereby the time constant is then changed in cyclic relation to the slip so as to produce an accelerating torque during a large portion of each half cycle of slip and so increase the speed of the motor to a higher degree in order to enable the motor to pull into step upon the application of excitation to the field circuit. In the construction of Fig. 1, the cyclic attraction of the field circuit time constant is obtained by the closure of contacts 30 by the double cam 29 carried on a shaft rotating at a speed of one revolution for each slip cycle of the motor 1 relative to the speed of an unloaded synchronous motor 26 run from the main supply; the closure of the contacts 3, closes a high-speed switch 13 for short-circuiting the field winding 3. After the switch 13 has been operated sufficiently often to bring up the speed of the motor to the required value a time relay 33, set into operation by a relay 14 responding to the motor reaching a predetermined subsynchronous speed, closes contacts 40 in the circuit operating a switch 7 for applying excitation to the field winding, the instant of complete closure of the operating-circuit of switch 7 being determined by the closure of contacts 34 by a cam 35 on the shaft 28. In another arrangement the cyclic alteration in the time constant is obtained by the cyclic application of excitation currents of opposite polarities, the machine being pulled into step by the attainment of a sufficient speed under the cyclically applied acceleration. Specifications 292,110, [Class 38 (ii)], and 384,567 also are referred to.
Patent GB-416026-A (GB)
Title: Improvements in photographic enlarging apparatus
IPC: G03B27/72
Filed: 1933-03-01
Abstract: 416,026. Exposure meters for enlarging-apparatus. WEISSE, E., 1, Ludwig- Hupfeldstrasse, Leipsic, Germany. March 1, 1933, No. 6214. [Class 98 (i).] In enlarging-apparatus having an observation screen on which the image can be seen there is provided light-diffusing means capable of temporary interposition in the path of the imageforming light, and superimposed on the observation screen is optical measuring means for indicating the length of exposure required with reference to the average luminous intensity of the diffused image. In the construction shown in Fig. 1 the light - diffusing means is a pane 30 of ground glass mounted in a slide 28, which also has in it a window 29, the slide being movably arranged between the negative carrier 26 and the objective 25. The measuring-device 31 is placed on the observation screen 271 and consists of a sheet 36 bearing graduated marks 32, near to which are windows 33 for enabling numbers 34 on a sheet 35 below. The sheets 35 and 36 are connected by pins and slots so as to provide for alternative sets of numbers to be associated with the graduated marks 35. The number associated with the last distinguishable mark is taken as the exposure time in seconds.
Patent GB-662788-A (GB)
Title: Improvements in or relating to calliper brakes for cycles
IPC: B62L1/10
Filed: 1949-03-08
Abstract: 662,788. Cycle brakes. MONITOR BRAKE CO., Ltd. March 8, 1950 [March 8, 1949], No. 6232/49. Class 136(i) In a calliper brake of the kind comprising a pair of spring - loaded levers pivoted about a common axis and operable by means of a cable and cable sheath abutment for urging brake blocks on the levers into contact with a cycle wheel rim the levers 1, 2 have slotted lugs 8 for the reception of brake-block holders 11, the lugs forming coplanar continuations of the levers. The lugs 8 are raised from a sheet metal blank, Fig. 6, into an approximately U-shape. One end of the blank is raised into a channel section comprising a web 13 and flanges 14 which enclose the end of the lever, the other end 15 of the blank being extended and received between the flanges. The parts are riveted together at 16. An ear 17 on the end 15 forms an anchorage for a limb 18 of a torsion spring. A threaded shank of the brake holder 11 is received in the slot 9 of the lug 8 and clamped by means of a nut 12 and clamping plate 12a.
Patent GB-580261-A (GB)
Title: Improvements in or relating to photographic materials
IPC: G03C1/76
Filed: 1944-04-04
Abstract: 580,261. Photographic materials. DIMSDALE, W. H., and CHALLIS, K. J. April 4, 1944, No. 6244. [Class 98 (ii)] To minimise scratching, photographic material comprising a support carrying a light-sensitive emulsion or a processed emulsion has an outer layer containing a higher fatty alcohol which is solid at ordinary room temperatures. Suitable alcohols include dodecyl, cetyl, ceryl, myricyl and stearyl alcohols ; the alcohol may be contained in the emulsion layer or other outer colloid layer, or applied thereto. The alcohol may be added to the emulsion or to the colloid used in making the emulsion either as a solution, e.g. in ethyl alcohol,'or in the molten state, with a suitable dispersing agent such as the soluble salts of the long-chain alkyl carboxylic acids, sulphuric acids, of sulphated long-chain secondary alcohols or of alkylated aromatic sulphonic acid, the salts being those of alkalic metals or ammonia and amines, e.g. triethanolamine and cyclohexylamines. Alternatively, an aqueous dispersion of the alcohol may be formed and added to the emulsion or the colloid. The alcohol may be coated directly on the emulsion either as an aqueous dispersion, in solution in a lower alcohol, or in the molten state,.or alternatively it may be coated as a dispersion in a colloid, e.g. gelatine. Specification 468,678 is referred to in the Provisional Specification.
Patent GB-678137-A (GB)
Title: Improvements in or relating to photo-radioscopy
IPC: G03B42/04
Filed: 1951-03-15
Abstract: 678,137. X-ray apparatus. SOMOVILLA, A. U. March 15, 1951, No. 6305/51. Class 98 (i). Photo-radioscopic apparatus comprises a first lens for obtaining an X-ray photograph of a patient and a second lens for photographing the face of patient with or without a data card, the lenses being so disposed relatively to each other and to a plate holder that the photographs obtained are disposed in spaced relationship on a single photographic plate. As shown, an X-ray tube A produces images on a fluorescent screen B, which is photographed on a photographic plate C by a lens D. A lens E forms an image of the face of the patient, together with a data card if desired, on a portion of the plate C not covered by the image formed by lens D. The two parts of the plate may be separated by a light-tight partition. At the end of an X-ray exposure, a clockwork mechanism H operates to switch on a lamp G to illuminate the face of the patient and the data card (if any), and to open a shutter F simultaneously.
Patent GB-600756-A (GB)
Title: Improvements in and relating to flexible pocket receptacle
IPC: A45C1/06
Filed: 1945-03-14
Abstract: 600,756. Card &c. cases. BUXTON, Inc. March 14, 1945, No. 6425. Convention date, March 14, 1944. [Classes 18 and 133] [Also 'in Group XV] A pocket receptacle comprising a flexible member 10 foldable about a transverse line 19 has a transparent card-displaying envelope 11 pivoted for swinging movement thereon, the envelope being pivoted at one corner to a corner of the member 10 remote from the fold line 19 so that when the member 10 is folded the envelope is held within it. Two envelopes 11 may be provided in the receptacle, one on each side of the fold line, and one end of the receptacle may be extended to form a closure flap 21. The receptacle may be removably or otherwise arranged in a holder 50 for currency notes, the member 10 normally engaging beneath tongues 47 engaging in slots 49 in the holder 50. The pivots for the envelopes may comprise rivets 17, or, where the envelopes are to be detachable, the pivots may be in the form of internally screwed posts receiving studs or posts secured in position by hook hasps.
Patent GB-946025-A (GB)
Title: Apparatus for dispensing elongated articles, packets or the like of cylindrical or substantially cylindrical form
Inventor: BUNZL THOMAS FELIX
IPC: A47F3/026
Filed: 1961-02-22
Abstract: 946,025. Shoots. ROTAX Ltd. Feb. 20, 1962 [Feb. 22, 1961], No. 6437/61. Heading B8S. [Also in Division G4] Cylindrical articles 4 stacked vertically between channel members 3a, 3b (Fig. 1, not shown) are released singly under gravity when a solenoid 11 is energized by a pulse, a relay (not shown) being connected in series with the solenoid 11 to break the solenoid circuit when a limb 8a has been released until the end of the operating pulse. Baffle 6 is so counterweighted that it only tilts to allow an article from a shoot 5 to enter the channel members 3a, 3b when the article is correctly aligned with its full weight on the baffle. The articles dispensed may be counted (see Division C4). Specification 920,933 is referred to.
Patent GB-1254164-A (GB)
Title: Improvements in or relating to fuel injection systems
IPC: F02D35/00
Filed: 1969-02-06
Abstract: 1,254,164. I.C. engine fuel injection systems. ROBERT BOSCH G.m.b.H. Feb. 6, 1969 [Feb. 13, 1968; Sept.30, 1968J, No.6492/69. Heading G1N. [Also in Division F1 In an I.C. engine fuel injection control system, the duration of solenoid operable injection valve opening pulses, from a multi-vibrator 28, Fig. 1, is determined as a function of the absolute pressure in the intake manifold 12 and the difference between the intake manifold pressure and the environmental barometric pressure, the construction of the pressure transducer being such that the valve opening period is controlled to provide maximum engine performance at all speeds and at all altitudes, less fuel being required at higher altitudes. The transducer 37, Fig. 4, includes a housing divided by a diaphragm 86 into two chambers 104, 105, chamber 104 being connected to atmosphere via passage 106, and chamber 105 being connected to the intake manifold via passage 38. The diaphragm is movable between two steps 87, 102. At low speeds i.e. low intake manifold pressure, diaphragm 86 abuts step 87 and a core 129 is positioned relative to two coils 118, 119 which control the multi-vibrator 28. As the engine speed increases, the intake manifold pressure increases thus causing pressure in chamber 105 to compress vacuum-diaphragm box 138 to move core 129 downwardly and thus increase the inductance of coils 118, 119 to increase the pulse duration. At a predetermined pressure, diaphragm 86 moves away from step 87 to further increase the inductance of coils 118, 119 and thus the pulse duration, the movement being limited by step 102. At the maximum speed the intake manifold pressure equals the atmospheric pressure. In Figs. 7 and 8 (not shown), the difference between the graphs of intake manifold pressure v pulse duration at sea level and at high altitude is illustrated. The shape of these graphs are also dependent upon the shape of core 129, the characteristics of diaphragm boxes 138, 140 and the spring rate of spring 146, leaf-springs 123, 124, which centre the core 129, and diaphragm 86. For altitude compensation at low engine speeds, the step 87 may be replaced by a resilient disc (160) having holes therethrough so that the pressure in chamber 105 acts on diaphragm 86, and the step 102 may be omitted, Figs. 9 to 12 (not shown). Further the diaphragm 86 may be omitted, Fig. 3 (not shown). The pulse duration may be additionally dependent upon engine speed and temperature.
Patent GB-557244-A (GB)
Title: A new or improved method and apparatus for the determination of speed
IPC: G01S15/58
Filed: 1942-05-13
Abstract: 557,244. Echo sounding speedometers. GUEST, J. J. May 13, 1942, No. 6493. [Class 118 (ii)] [Also in Groups XIX and XL] A method of determining the rate of change of distance between two objects consists in projecting a beam of radiation, either acoustic or electrical, from one object, receiving the beam after reflection from the second object and observing the reflected beam by means of an oscillograph. Since the distance between the two objects is changing, the curve on the screen of the oscillograph moves across the screen owing to the Doppler effect. The rate at which the curve moves is proportional to the speed at which the distance between the two objects alters, and enables the speed to be determined. Alternatively, the time base of the oscillograph may be adjustable, and this adjustment can be used to keep the curve on the screen stationary. The position of the adjusting member can be calibrated to indicate speeds.
Patent GB-1507501-A (GB)
Title: Analogues of prostanoic acids and process for preparing them
IPC: C07C67/00
Filed: 1975-02-17
Abstract: Novel analogues of prostanoic acids, which have the accompanying formula I, in which the symbols R1 to R3 have the meaning given in Patent Claim 1, are prepared by removing the tetrahydropyranyl ether protective group and the ketal grouping simultaneously or successively from an appropriately substituted 3-tetrahydropyranyloxy- 1,5-dioxaspiro compound. The corresponding compounds in which, instead of the keto group in the cyclopentyl radical, hydrogen and a hydroxy group are present, are obtained by reduction with a complex metal hydride. The compounds can then be converted into their physiologically tolerable salts or esters. The compounds are distinguished, even in the form of their epimer mixtures, by a good general spasmolytic, in particular bronchodilatory, action. They additionally have a hypotensive action and can also be employed in some cases in gastrointestinal disorders. <IMAGE>
Patent GB-812382-A (GB)
Title: Supported catalysts
Inventor: COOPER LESLIE ERNEST
IPC: B01J23/58
Filed: 1956-03-02
Abstract: Supported catalysts suitable for the selective hydrogenation of unsaturated aldehydes are prepared by treating solid, mildly alkaline, supporting material with a solution of a compound of a platinum group metal in an organic solvent, thereby depositing the oxide and/or hydroxide of the metal on the supporting material and thereafter reducing the oxide to the metal.  Supporting materials mentioned are solid and substantially water-insoluble metal oxides, hydroxides, basic oxides, carbonates and basic carbonates, e.g. alumina, magnesia, titania and chromia; charcoal; silica gel; and pumice.  If the support is not intrinsically alkaline (e.g. magnesia) it is rendered mildly alkaline, e.g. by impregnating with an aqueous solution of an hydroxide, carbonate or bicarbonate of an alkali metal (e.g. Na or K) and drying.  The platinum group metals are ruthenium, rhodium, palladium, osmium, iridium and platinum.  The compounds must be hydrolysable and soluble in the organic solvent.  Exemplary compounds are palladous chloride and sodium chloropalladite.  Organic solvents mentioned are C1-4 primary and secondary aliphatic alcohols, e.g. methanol to the butanols; C2-5 ketones, e.g. acetone and methyl ethyl and diethyl; C2-4 esters, e.g. methyl and ethyl formate and acetate; glycol ethers e.g. 2-ethoxy or 2-butoxy ethanol; water-soluble ethers, e.g. dioxan and dihydropyran; esters of sufficiently high molecular weight to offset the hydrophilic character of the glycol group, e.g. hexylene glycol and 2-ethyl-hexan-1 : 3-diol.  The solvents preferably contain from 1 to 15 vol. per cent of water.  The reduction of the oxide to the metal may be a separate process or it may take place in the reaction vessel immediately prior to an hydrogenation reaction. In an example 1000 parts by volume of magnesia is added to 1000 parts by volume of a 5 wt. per cent aqueous sodium carbonate solution, the mixture is kept at 100 DEG  C. for 10 minutes and the magnesia is then removed and dried.  3.34 parts of palladous chloride and 2.24 parts of sodium chloride are dissolved in 7.98 parts of water (all by weight), the solution diluted with 200 parts by volume of acetone, the precipitated NaCl removed by filtration, and the solution further diluted to 400 parts by volume with acetone.  This solution, together with 200 parts of acetone and 30 parts of water (both by volume) is gently refluxed with the magnesia for 4 hours, the liquid phase removed and the coated material is washed with 25 times its volume of water for 4 hours.  The palladium oxide is reduced with hydrogen (diluted with 95 per cent nitrogen initially and slowly increased to neat H2 over 3 hours) in a reactor wherein it is then used to hydrogenate crotonaldehyde.  According to the Provisional Specification compounds of other elements, e.g. auric chloride, mercuric chloride, uranyl chloride and the trichlorides of the rare earth elements may be used in a similar way instead of the platinum group metal compounds and water-soluble acetals may be used as solvents.
Patent GB-575810-A (GB)
Title: Improvements in means for the suspension of pendant electric light fittings
IPC: F21V21/02
Filed: 1944-04-07
Abstract: 575,810. Lamp supports. WILDBORE, J. E. April 7, 1944, No. 6545. [Class 75 (iii)] An antivibration support for electric light fittings consists of a tubular stem 1 threaded at its upper end into a flanged collar 4 which is supported by a helical spring 11 in an internally circular socket 7 formed with holes 9 for screws securing it to a ceiling junction box. The flange on the collar 4 is formed with lugs 13 loosely engaging vertical guide channels 12 in the socket 7. A slack earth ing wire connects a screw 15 on the collar 4 to a screw 14 on the socket. The socket 7 may be of moulded plastic, cast metal or alloy or of sheet metal. When the light fitting is supported by two or more tubular stems, the bottoms of the stems and lugs on the fitting may be oppositely threaded to engage threaded connecting sleeves.