baber/WOPTO huggingface dataset:
Patent GB-1515606-A (GB)
Title: Electrophotographic apparatus
IPC: B41J2/44
Filed: 1976-10-06
Abstract: 1515606 Automatic control of laser beam intensity INTERNATIONAL BUSINESS MACHINES CORP 6 Oct 1976 [23 Dec 1975] 41545/76 Heading G3R In an electro-photographic apparatus (printer/ copier) with a photo-conductive drum (11), Figs. 1 and 2 (not shown) which is scanned by a light (laser) beam to discharge the drum completely in its non-working border area and selectively in its working area, thus forming a latent image in the latter, the beam intensity is kept constant by a closed-loop system which senses the intensity only when the beam is scanning the border area. The apparatus is generally described and as shown laser beam 18 is passed through an acoustooptical modulator 22 where it is directed into one of two paths 32, 33 of which only the path 33 terminates at the drum (11). The beam is thus directed continuously into the path 33 when scanning the border area and selectively when scanning the working area. The selective modulating signals can be derived from a further optical system which scans an original (copy mode) or from a character generator receiving a digital input from a store (print mode). A fraction of the beam 33 is fed to an intensity sensor 102 the output of which is compared with a reference from source 134. Any resultant error signal is used to drive a D.C. motor 124 and thus adjust a potentiometer 126 which controls a modulator driver 110. The driver adjusts the action of the modulator 22 to bring the intensity of beam 33 to the desired level. Switch 132 in the motor circuit is closed only when a command signal is present on line 136 to permit adjustment, and is open while the beam is scanning the drum's working area. During the latter period, the driver 110 is turned on and off by the selective modulating signals which are applied to line 142. In an alternative embodiment, the intensity sensor 102 controls a digital counter (148), Fig. 7 (not shown) in dependence on whether the intensity is above or below a pre-set level. The counter controls the modulator 22 via a D-A converter and an r.f. oscillator and amplifier.
Patent GB-1379423-A (GB)
Title: Method for manufacturing pitch
IPC: C10C1/16
Filed: 1972-09-08
Abstract: 1379423 Pitch OSAKA GAS CO Ltd 8 Sept 1972 41790/72 Divided out of 1292008 Heading C5E  Pitch is produced by heating to 320‹ to 470‹ C. at a pressure of at least one kg./sq, cm. a starting tar which is (a) coal tar having a flash point of 30 to 140‹ C. and absolute viscosity of 20 to 1000 centipoise at 50‹ C. and containing 5 to 30% by wt. of 0‹ to 270‹ C. fraction, and/or (b) oil gas tar having a flash point of 20‹ to 130‹ C. and absolute viscosity of 10 to 500 centipoise at 50‹ C. and containing 10 to 35% by wt. of 0‹ to 270‹ C. fraction, to produce gas, oil and pitch, and the pitch is separated from the oil by distillation.  Reference has been directed by the Comptroller to Specification 1,292,008.
Patent GB-1015300-A (GB)
Title: Wire coil screw thread insert
Inventor: STEINMEYER GERHARD
IPC: F16B37/12
Filed: 1964-10-14
Abstract: 1,015,300. Screw-sockets; locking nuts. HELI-COIL CORPORATION. Oct. 14, 1964, No. 41823/64. Heading F2H. A screw-thread insert of coiled wire having an angular, e.g. diamond, cross section, has at least a section of a turn twisted about the axis a-a, Fig. 1, of the wire 10. Alternate sections 15, 16 of wire may be twisted in opposite directions, e.g. so that crosssections of the wire are set at 40 to 50 degrees to the untwisted cross-sections, some in one direction as at 17, Fig. 7, and others in the other direction as at 18. The twisted sections 15, 16 may be separated by untwisted sections or there may be merely sections twisted in one direction only and separated similarly. When the wire is coiled for insertion in a tapped bore, some or all of the turns may have twisted sections. When a bolt is screwed in, the twisted sections 17, 18 are moved in the direction of the untwisted positions, as indicated by the arrows in Fig. 7, to lock the insert 11 in the thread groove 13 of the tapped bore 12 and the bolt in the insert.
Patent GB-874218-A (GB)
Title: Improved plane for the production of profiles
IPC: B27G17/02
Filed: 1959-12-09
Abstract: 874,218. Planes. KREBS, T. Dec. 9, 1959 [Dec. 10, 1958], No. 41844/59. Class 61. A plane for cutting profiles into flat sheet members such as boards, panels and the like consists of a sole plate and two parallel fences arranged perpendicularly to the sole plate, at least one of the fences and sole plate being adapted to carry cutting irons adjustably fixed thereto so that for cutting the profile the edge of the sheet-like member is inserted between the fences so that the sole plate bears on the edge. As shown the lower member 2<SP>1</SP> of the first fence carries at each end sterns 4, 5 respectively, projecting perpendicularly from that side of the member which faces the second fence 3. The fence 3 is slidably adjustably mounted by means of nuts 13 and counternuts 14, the sole plate 1 being adjustably mounted by means of a grooved nut 7 on each stem which engages the forked end of the sole plate. The side 1<SP>1</SP> of the sole plate which faces the first fence carries a cutting iron 6 which extends and is adjustably fixed in a plane parallel with the fences. The cutting iron 6, secured to the sole plate 1 by a backing iron and bolts has two cutting edges 6<SP>1</SP>, 6<SP>11</SP> which project above and below the sole plate. The lower member 2<SP>1</SP> of the first fence, which faces the upper member 2, carries at each end a threaded guide pin 11, 12 projecting perpendicularly therefrom. The member 2 and the cutting iron 15 attached thereto are slidably mounted on the guide pins 11, 12 between nuts and counternuts 13, 14. The cutting iron 15 is adjustably clamped to a sloping face of the member 2 and projects into a gap between the fences above the sole plate 1. A second cutting iron 19 is adjustably clamped to a sloping face of the lower member 21 of the first fence and projects into the gap between the fences below the sole plate. To aid adjustment of the two fences, graduated plates 23, 24 are fixed at the centre and one end respectively of the member 2<SP>1</SP>, flush with the upper face 1<SP>11</SP> of the sole plate. Graduated plates 25, 26 fixed respectively at the ends of the lower member 2<SP>1</SP>, flush with the outer surface, facilitate parallel adjustment of the members 2, 2<SP>1</SP> of the first fence. In a modification the cutting iron carried by the lower member of the first fence projects into the gap between the two fences above the sole plate 1. The second fence comprises upper and lower adjustable members the lower member carrying a cutting iron slidably adjustable in relation to the bottom face of the sole plate.
Patent GB-1081973-A (GB)
Title: Improvements in mechanical oscillators
IPC: G01P9/04
Filed: 1964-10-14
Abstract: 1,081,973. Electromechanical resonators. JAZ S.A. Oct. 14, 1964 [Oct. 14, 1963], No. 42014/64. Heading H3U. [Also in Division G5] The Specification describes a piezo-electric driven mechanical oscillator which consists of a flexible member AA<SP>1</SP>, and additional masses BB<SP>1</SP> attached to the ends of the member. In operation, as the ends of the member flex downwardly the masses are deflected upwardly (Fig. 2, not shown) so that the centre of gravity of the arrangement remains substantially in the same plane. To increase the rigidity of the masses the plate may be ribbed at L and additional masses such as the elements of a vibration maintainer may be added. The piezo-electric crystal may be formed of two crystals suitably glued and polarized to the central axis of the mechanical oscillator (Fig. 9, not shown), having electrodes (e 1  and e 2 ) which may act as an exciter or pick-up element. The mechanical oscillator may be driven electromagnetically instead of piezo-electrically.
Patent GB-1183794-A (GB)
Title: Improvements in or relating to Annealing Furnaces.
IPC: C21D9/00
Filed: 1968-09-04
Abstract: 1,183,794. Furnace for selective annealing. KLOCKNER-WERKE A.G. Sept. 4, 1968 [Nov.28, 1967], No.42100/68. Heading C7N. An annealing furnace for the selective annealing of ground contact plates having one or more ridges is provided with longitudinal hollow rails through which coolant flows, the rails being so formed that the ridges may project into them and be thereby protected from annealing. Preferably the rails are provided with longitudinally extending recesses, the recesses complementing the shape of the ridges. The rails may also have a coating of insulating material such as mineral wool and asbestos. As illustrated, ground contact plate 'b' has a ridge 'a' which is to be protected from annealing; to this end the ridge travels longitudinally through recess 2 of cooled rail 1 as the plate traverses the furnace.
Patent GB-893365-A (GB)
Title: Improvements in or relating to contact electrodes
Inventor: THOMSON ALAN
IPC: H01H1/021
Filed: 1958-12-31
Abstract: 893,365. Switch contacts. ERICSSON TELEPHONES Ltd. March 31, 1960 [Dec. 31, 1958], No. 42125/58. Class 38 (5). A contact has a generally cylindrical body 7 of a malleableconductive material such as mild steel with a flange 5 and skirt 6. After insertion in a hole in a mounting blade 1, the skirt is swaged over. Each face 8, 9 has a contact surface fixed thereto, e.g. by brazing, soldering, cold-pressing or electrodeposition. The contact surfaces may be discs or domes and made of silver, gold, platinum, palladium or an alloy of two or more of these, or an alloy of any of these metals together with iridium or ruthenium or both. Alternatively, the contact surfaces may be made of tungsten or of any contactsurfacing material made by sintering.
Patent GB-1518059-A (GB)
Title: Aircraft propulsion blade crack indicator
IPC: B64D45/00
Filed: 1976-10-12
Abstract: 1518059 Pressure sensor TYCO LABORATORIES Inc 12 Oct 1976 [14 Nov 1975] 42298/76 Heading G1A [Also in Division B7] A system for detecting cracks in an aircraft propulsion blade comprises a pressure sensor 11  mounted on the blade and in communication with the interior thereof, the sensor having a movable member carrying a normally-shielded isotopic radiation source 25, Fig. 3, and a radiation detector 12 mounted on the aircraft fuselage and connected to a warning indicator 14 in the cockpit. Pressure drop in the interior of the blade causes movement of the source to an unshielded position at which it can irradiate the detector. The source may be beta-emitting, Strontium 90 or Americium 241. The source may be a geiger counter. Analog meter indication is also provided.
Patent GB-1279149-A (GB)
Title: Boilers
Inventor: BERGER OTTO
IPC: F22B7/12
Filed: 1969-08-25
Abstract: 1279149 Water boiler O BERGER 25 Aug 1969 42313/69 Heading F4A A water boiler comprises a fire-box 3, smoke tubes 6 fixed in a tube plate 5, and a water inlet 11 opening from above into a chamber 20 adjacent the point at which the heating gases enter the smoke tubes. The boiler is heated by an oil or gas burner 2, and combustion gases flow back from the rear wall (not shown) of the firebox to a deflection chamber 15 and through smoke tubes 6 to a flue-gas opening and chimney stack. The chamber 20 is divided from the main water-space of the boiler by a partition 19 and communicates with the main water-space through an opening 21 and through clearances between the partition and smoke tubes. In another embodiment (Fig. 2, not shown) the smoke tubes are provided through part of the cross-section of the water-space only.
Patent GB-906419-A (GB)
Title: A process for the continuous substitutionary chlorination of mono-olefines
Inventor: ENGELBACH HEINZ
IPC: C07C17/10
Filed: 1960-12-09
Abstract: Mono-olefines containing 2-5 carbon atoms are chlorinated by substitution by reaction with chlorine in the gas phase at 250-600 DEG C. in the presence of a moving solid inert heat carrier, the chlorine and olefine being premixed and the mixture reacting in an upwardly moving stream in the presence of the heat carrier which also moves upwardly and which enters the reaction zone at 250-600 DEG C., the residence time of the reactants in the reaction zone being 0.05-5 seconds; separating the heat carrier and recovering the chlorination products.  Preferred sets of conditions are the use of ethylene or propylene at 450-550 DEG C. and an olefine: chlorine ratio of 2-5:1; and the use of butene-2 at 350-550 DEG C. and a butene:chlorine ratio of 1-3:1.  Other specified starting materials are butene-1, isobutene and pentene-2.  In examples (1) ethylene gives vinyl chloride, vinylidene chloride and dichloroethylenes; (2) propylene gives allyl chloride, 1-chloropropene and 1,2-dichloropropane; and butene-2 gives 1,4-dichlorobutene-2, 1-chlorobutene-2 and 2,3-dichlorobutene.
Patent GB-1099069-A (GB)
Title: Device for transferring flat or sheet products
IPC: B65H5/22
Filed: 1966-09-23
Abstract: 1,099,069. Endless conveyers. MARIUS MARTIN. Sept. 23, 1966 [Nov. 17, 1965], No. 42433/66. Heading B8A. Corrugated cardboard sheets (not shown) are held on a conveyer belt 2 for a predetermined limited degree of its travel by the action of vacuum applied from a cavity 8 to ports defined by a portion cut-away in a side frame member 15 at each side of the belt. The vacuum is thus established in flutes 14 formed in the conveyer belt. The belt may also be fluted on its under side (Figs. 3 and 4, not shown). The vacuum may be applied intermittently under the control of a programming device (not shown).
Patent GB-1027004-A (GB)
Title: Means for guiding cable onto a winding drum
IPC: B66D1/36
Filed: 1962-11-09
Abstract: 1,027,004. Guiding cables on to winding drums. F. L. LEBUS, and F. L. LEBUS JUN., [trading as LEBUS ROYALTY COMPANY]. Nov. 9, 1962 [Dec. 8, 1961], No. 42468/62. Heading B8B. Apparatus for guiding a cable 12, Fig. 2, on to a winding drum 10 comprises a pulley 56 rotatable about and axially displaceable along a shaft 24 which is itself mounted for rotation about a skew axis as in Specification 940,047, which is referred to. The present invention is characterized by the provision of means for adjusting the relative orientation of the geometric and rotational axes of the shaft. The shaft bearings 48, 50 (Fig. 3) incorporate seatings for part-spherical bearing elements 38, 44 which are fixedly mounted eccentrically on respective collars 30, 32 secured to the shaft ends. The collars are secured to the shaft by screws (not shown) fitted in bores 36 in the collars and tightened, in any desired position of adjustment, into grooves 34 in the shaft ends. The inner faces of the collars may be marked with graduations which are read against fixed reference marks on the surface of the shaft to facilitate accurate setting.
Patent GB-1510279-A (GB)
Title: Fluorination of trichloromethyl substituted benzenes
IPC: C07C25/02
Filed: 1976-10-13
Abstract: 1510279 Fluorination of bis(trichloromethyl)- benzenes BAYER AG 13 Oct 1976 [17 Oct 1975 31 March 1976] 42545/76 Heading C2C The invention comprises a process for the preparation of a compound of the Formula I wherein R<SP>1</SP> and R<SP>2</SP> are independently H, F, Cl or Br by reaction of a compound of Formula II with less than 6 moles of anhydrous HF per mole of bistrichloromethylbenzene in the presence of a halogen transfer catalyst, e.g. SbCl 5 , FeCl 3  and AlCl 3 . Minor quantities of by-products having either a CCl 3  or CF 3  group or a mixed group i.e. CFCl 2  or CF 2 Cl are also formed during the reaction in amounts usually less than 10%. 1,3- difluoro - 4,6 - dimethylbenzene is prepared by diazotization of 2,4-dimethyl-5-fluoroaniline in the presence of HF followed by thermal splitting of the diazonium fluoride, and is chlorinated with chlorine gas whilst irradiating with UV light to obtain 1,3-difluoro-4,6-bis(trichloromethyl)benzene.
Patent GB-862132-A (GB)
Title: Frequency discrimination system of voice formant
IPC: G10L25/00
Filed: 1959-12-15
Abstract: 862,132. Frequency discriminators. NIPPON ELECTRIC CO. Ltd. Dec. 15, 1959 [Dec. 17, 1958], No. 42575/59. Class 40(5) A frequency discriminator for providing a voltage characteristic of the amplitude and frequency shift of a voice formant comprises a variable frequency oscillator 7 the output of which is modulated by the formant signal, a single sideband load pass filter 2, the frequencies of the selected sideband then being passed through networks 3, 4 having reversed attenuation/frequency characteristics with respect to one another, the two outputs from 3, 4 being compared in a comparator 5 which will give an output if the formant is shifted in frequency, said output voltage later giving an indication of said frequency shift and being supplied to a controller 6 to feed back a voltage to the oscillator 7 so to vary the frequency thereof that the centre frequency of the selected sideband is maintained at the centre of the passband of filter 2.
Patent GB-909550-A (GB)
Title: Improvements in or relating to glandless centrifugal pumps with built in electric motor
IPC: F04D29/04
Filed: 1960-12-12
Abstract: 909,550. Mounting rotors in dynamo-electric machines. MOSER, H. Dec. 12, 1960 [Dec. 14, 1959], No. 42652/60. Class 35. [Also in Group XXVI] Forced lubrication to reduce wear on the journal and thrust bearing surfaces 11, 12 and 15, 16 of a glandless, centrifugal pump is ensured by connecting the high to the low pressure side of the pump through the pairs of bearing surfaces arranged in series. Any tendency for axial movement of the hollow shaft 6a caused by gravitational or electrical forces is compensated by preselection of suitable bearing diameters D 1 , D 2 . The fixed and rotatable parts of the bearings may be either inside or outside each other (Figs. 3-6, not shown). As shown in Fig. 7, the journal bearings may have an annular groove 22 and hole 23 to relieve pressure on the bearing surfaces. The invention may be applied to pumps having a multi-stage, seriesflow impeller (Figs. 8, 9, not shown). The bearing surfaces may be of carbon and nickel steel respectively.
Patent GB-1520310-A (GB)
Title: Closure device for a container for molten metal
IPC: B22D41/28
Filed: 1975-10-17
Abstract: 1520310 Gate valves for metallurgical ladles METACON AG 17 Oct 1975 [24 Oct 1974] 42800/75 Heading F4B In a sliding gate valve for a metallurgical vessel having a nozzle block 11, fixed plate 10 held against the exterior of the nozzle, a sliding gate 12 and a discharge nozzle 13 secured to the sliding gate, an annular head 17, 17<SP>1</SP> of trapezoidal cross-section is formed on the outer surface of each valve plate 10, 12 surrounding the apertures 16, 16<SP>1</SP> to form a key with the corresponding nozzle block. The inner diameter of the heads is greater than the diameter of the nozzle bars, which correspond to the diameter of the apertures in the valve plates. In a slide valve having two fixed valve plates, with a sliding gate between them, each fixed valve plate has a trapezoidal section head of greater diameter than the aperture in the fixed valve plate, although the aperture of the discharge nozzle may correspond to the inner diameter of the head, the wall of the discharge nozzle extending beyond the outer face of the head (Fig. 2).
Patent GB-1362003-A (GB)
Title: Process and apparatus for measuring radioactivity
IPC: G01T7/02
Filed: 1971-09-14
Abstract: 1362003 Analysis of samples containing radio-active isotopes GYOGYSZERKUTATO INTEZET and KOZPONTI KEMIAI KUTATO INTEZET 14 Sept 1971 [14 Sept 1970] 42809/71 Heading G1B The radio-activity of <SP>14</SP>C labelled substances is measured by combusting the sample in chamber 2 in an atmosphere of oxygen which has been provided from e.g. electrolysis of water in cell 7. Excess oxygen is converted into water vapour in a metal-metal oxide catalyst reactor 3 by reduction with hydrogen also produced from cell 7. The water vapour is condensed at 4 and the <SP>14</SP>C containing gases e.g. Co 2  are flushed with a hydrocarbon carrier gas e.g. propane-butane, to radio-activity detector unit 5 and recorder 6. The catalyst may be copper, iron, nickel, cobalt, manganese chromium and/or vanadium with the appropriate oxides. The operation may be automatically programmed Fig. 2 (not shown).
Patent GB-921380-A (GB)
Title: Fluid bearings
Inventor: ANDERSON HAROLD HENRY
IPC: F16C32/06
Filed: 1960-12-14
Abstract: 921,380. Bearings. HARLAND ENGINEERING CO. Ltd. Jan. 1, 1962 [Dec. 14, 1960], No. 43076/60. Class 12 (1). In a fluid-pressure device having regions of high and low pressure which are divided by a pressure wall, the wall has a bore through which a rotatable shaft passes and has pressurechambers circumferentially-spaced around the shaft which communicate with said bore and with the high-pressure region. In an embodiment, the pressure wall 1 divides the high-pressure region 2 from the low-pressure region 3 and the pressure-chambers 7, 8 and 9 are connected to the region 2 by passages 10, 11.
Patent GB-1587821-A (GB)
Title: Open-end spinning machines
IPC: D01G19/10
Filed: 1976-10-19
Abstract: The roller (1) has a bush part (9), through the casing of which there is a plurality of pins (10). Each of the pins (10) consists of a cylindrical main part (13) and of a narrowing tooth part (14) which projects from the bush casing and which terminates in a tip. The toothed parts (14) are provided with a hard covering (15) made of abrasion-resistant material, for example ceramic or hard metal, especially chromium carbide. The toothed parts grasping the fibres are thus abrasion-resistant in respect of wear caused by the fibres. <IMAGE>
Patent GB-1224577-A (GB)
Title: Light metal piston
IPC: F16J1/06
Filed: 1969-09-02
Abstract: 1,224,577. Pistons. MAHLE K.G. 2 Sept., 1969 [18 Oct., 1968], No. 43407/69. Heading F2T. In a light metal trunk piston in which the gudgeon-pin bosses 4 are connected to the skirt 3 and also by ribs 5 to the piston crown 1 and in which expansion-regulating inserts 6 of a material having a coefficient of thermal expansion lower than that of the light metal, e.g. steel, are embedded in the skirt so that they are substantially parallel with the skirt contour and extend to the bottom flank of the lowest piston ring groove 7, the inserts 6 extend peripherally from the gudgeon-pin bosses to beyond the region in which the ribs are disposed and a radially inner skirt part 32 of closed annular cross-section and directly connected with the ring zone 2 is separated at the thrust face regions from a radially outer skirt part 31 by axial recesses 8 which extend to the lowest ring groove 7 and have a peripheral width equal to the distance a between the opposed ends of the inserts 6. The radially outer part 31 is separated from the piston head by the ring groove 7.
Patent GB-958701-A (GB)
Title: Improvements relating to scraper chain conveyors
Inventor: PAUL THOMAS CAMPBELL
IPC: B65G45/00
Filed: 1961-12-05
Abstract: 958,701. Endless scraper conveyers combined with screw conveyers. MINING ENGINEERING CO. Ltd. Nov. 29, 1962 [Dec. 5, 1961], No. 43418/61. Heading B8A. Coal which spills from the junction of a scraper conveyer 33 feeding another conveyer (not shown) is fed away by a pair of screw conveyers 35, 36 disposed beneath the conveyer 33. The screw conveyers terminate in a housing 38 which is shaped and apertured so as to discharge the coal in a direction perpendicular to the axis of the screws. In a modification (Figs. 1-4, not shown), the screw conveyers may be disposed with their screw axes parallel with the feed direction of the conveyer 33.
Patent GB-1328733-A (GB)
Title: Method of riveting an electric connecting pin to a connector
Inventor: SCAILLET CLAUDE
IPC: H01R9/20
Filed: 1971-09-20
Abstract: 1328733 Riveting ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI 20 Sept 1971 [24 Sept 1970] 43645/71 Heading B3U [Also in Division H2] An electric connecting pin 3 having a shoulder 2 is riveted to a connector 5 by compressing an end part 1 of the pin so that a sleeve 6, having a length greater than the thickness of an insulating wall 4, is upset between the shoulder and the connector. The upsetting forms a bulge 7 within the hole of the wall 4.