baber/WOPTO huggingface dataset:
Patent GB-818447-A (GB)
Title: Microwave antenna feed for circular polarization
IPC: H01Q13/02
Filed: 1957-10-25
Abstract: 818,447. Aerials; R.F. couplings. BENDIX AVIATION CORPORATION. Oct. 25, 1957 [Oct. 31, 1956], No. 33418/57. Class 40 (7). [Also in Group XL (b)] The invention relates to an aerial feeder and aerial arrangement for the transmission and reception of circularly polarized waves. The system is such that received waves of one sense of rotation are accepted and those of the opposite sense rejected. As shown, the input is from a rectangular guide 1 carrying energy of TE 01  mode to the system. The guide 1 is coupled by a transition unit of three elliptical sections 3, 4 and 5, which progressively approach circularity, to a circular guide 6. Propagation in guide 6 is in the TE 11  mode with the electric vector vertical. Rods 7 extending diametrically and horizontally across the guide a quarter wavelength apart act as mode aligners and the polarization is such that no energy is fed to shunt arm 10 terminating in a dissipative load 11 placed opposite a capacitive pin 12. The guide 10 and pin 12 are close to the output end of guide 6 which feeds into a further and rotatable circular guide 13 containing a dielectric polarizer 13, having deep V-grooves 15 with bevelled edges in its ends. This guide may be positioned so that its output is either circularly or horizontally polarized. Following the guide 13 is a square guide 16 in the top and bottom walls of which are fixed ridges 17 whose inmost surfaces are arcs of a circle. Where the guide 16 receives circularly polarized energy this is converted into two modes, one vertically and one horizontally polarized and the purpose of the ridges is to compensate for the unequal phase shift caused by the unequal side dimensions of the horn which is designed to have different beam-widths in azimuth and elevation. The ridges are dimensioned to ensure that the transmitted wave is circularly polarized. Reflections in the horn will be elliptically polarized and that component which results in vertically polarized energy will be passed back down waveguide 1 whilst that which results in horizontally polarized energy in guide 6 will be reflected at 7 and absorbed in the shunt arm 11. This enables satisfactory results to be obtained over a broad band of frequencies. The horn 21 has capacitive pins at its end section to match it for horizontal polarization. It is designed to have a pattern which remains the same in both the horizontal and vertical planes regardless of the polarization of the energy fed to it. This is done by the introduction of fins 22 on the sidewalls of the horn which change the aperture as a function of polarization by acting as waveguides beyond cut-off when the electric field is parallel to them.
Patent GB-1381220-A (GB)
Title: Accumulator with measuring probe
IPC: H01M50/569
Filed: 1973-07-13
Abstract: 1381220 Accumulator with measuring probe ROBERT BOSCH GmbH 13 July 1973 [15 July 1972] 33426/73 Heading H1B A probe 20 for measuring charge state or electrolyte level in an accumulator is made of a synthetic plastics material rendered electrically conductive by incorporation of a lead and/or graphite additive. The probe has an electrode portion 23 extending on to the accumulator and a cylindrically-shaped head portion 21 having ribs 25 making a seal with a socket 11 formed on the inside of the accumulator lid 10. An opening 24 in the head portion 21 serves as a socket contact for receiving a plug contact 30 of a cable 31. As shown, the probe 20 is removable from the socket 11, but in modifications (not shown) it is fixed permanently.
Patent GB-843747-A (GB)
Title: Direct acting floating armature, multi-contact, high speed electromagnetic relay
IPC: H01H51/28
Filed: 1958-10-21
Abstract: 843,747. Electromagnetic relays. BONAMINI, N. Oct. 21, 1958, No. 33516/58. Class 38 (5). A high-speed relay has a floating disc armature 5 held between two bellows type springs 11 and having moulded insulation at its edges carrying moving contacts 7. Each contact 7 is connected to a corrugated copper foil strip 4 clamped between insulating rings 3 between mouldings 1, 2. Also clamped between the rings are fixed contact springs above and below the contacts 7 and engaging semicircular rings 8 on annular contact adjustment members 9. The members 9 are adjusted by means of three sets of screws 10 spaced at 120 degrees and engaging slanting surfaces on the members 9. The centre part of the armature is silicon iron with an annular flange 6 perforated to receive the moulded material. The end of each bellows spring remote from the armature rests on a ring 13 which is adjustable by means of three screws 12 also spaced at 120 degrees. A former 16 carrying a coil 17 is screwed into the moulding 2 and is provided with a cylindrical bore and threaded end to adjustably receive a moulding 15 containing a square-section laminated cone 14. Connections from the strips 4 and contact springs 3 are taken from their ends 18 through passages 19, 20 to pins 21, 22, 23 and connections from the coil 17 are taken to pins 25. The armature 5 and cone 14 also act as contacts since they are connected to terminal pins 27 by means including the corrugated strip 26 which is coupled to the armature. The moulding 1 forms a plug base and lines 24 thereon indicate pins for co-operating contacts. Holes are provided in the armature to prevent pressure build-up within the bellows. The complete relay may be plastic impregnated or moulded as at 29 or sealed in a metal or glass container. In place of the rings 9 each fixed contact may have a separate means of adjustment. The relay may be used as a high-speed vibrator.
Patent GB-970400-A (GB)
Title: Process for treating solutions and apparatus for use therein
IPC: B01D63/02
Filed: 1961-09-19
Abstract: <PICT:0970400/C1/1> A process for treating solutions, suspensions or slurries by osmosis, reverse osmosis or dialysis employs as semi-permeable membranes hollow fibres. As shown in Fig. 1, a cell 10 has inlet 11 and outlet 12, end plates 17 supporting the terminal portions of bundles 19 of fibres, and outlets 13 for the permeate. The fibres may incorporate ion-exchange constituents. Specific examples disclose the desalification of sea water, the concentration of aqueous solutions of sodium chloride, copper sulphate and ammonium nitrate, and the recovery of sodium hydroxide from viscose press liquor, using in all cases cellulose triacetate fibres.  Numerous other uses are listed, and mention is made of water-softening and the treatment of sewage sludge.ALSO:Glycerine, glycols, lactic acid, glycine, sodium glutamate and alcohol solutions are concentrated and ethanol-isopropanol-water ternary azeotropes separated by passage through a cell containing as semi-permeable membranes hollow fibres.ALSO:A styrene-butadiene latex is concentrated by passage through a cell containing cellulose triacetate fibres, water being removed from the interior of said fibres.ALSO:Fruit and vegetable juices and beverages are concentrated by passage through a cell containing as semipermeable members a multiplicity of hollow fibres.  Mention is made of orange, grapefruit, grape, apple, tomato, carrot, cabbage and celery juices, skimmed milk, and extracts of coffee and tea; specific examples describe the concentration of apple cider, coffee solution and orange juice using cellulose triacetate fibres.
Patent GB-865444-A (GB)
Title: Improvements in or relating to the mounting of panels and other sheet materials
IPC: E04F19/06
Filed: 1958-10-22
Abstract: 865,444. Mounting panelling. BRITISH TRANSPORT COMMISSION, HAVERS, H. C. P., and GAGE, E. J. Sept. 29, 1959 [Oct. 22, 1958], No. 33734/58. Class 20(4) Panels 19 are supported on a frame member 22 or against a wall by mounting a backing strip 11 thereon by bolting or glueing and clamping the panels between surfaces 17, 18 of the strip and of a capping strip 16, arranged to interlock at 15 with the backing strip, one or both of the strips being elastically deformable. The regions A are provided for drainage.
Patent GB-1446531-A (GB)
Title: Electrophotographic copying appliance
IPC: G03G15/09
Filed: 1974-07-31
Abstract: 1446531 Electrographic copying machine DEVELOP KG DR EISBEIN & CO 31 July 1974 [16 Aug 1973] 33736/74 Heading G2H The machine, in which a latent electrostatic image is formed on a copy sheet and which includes a device comprising a magnetic brush developing roller and an adjacent pair of image-fixing presser rollers, the said device is formed as a separate construction unit which is displaceable in the manner of a drawer from the machine housing to facilitate access, e.g. for maintenance or cleaning of the device.
Patent GB-985204-A (GB)
Title: Improvements in or relating to optical or infrared maser cavities
IPC: H01S3/082
Filed: 1961-09-21
Abstract: 985,204. Masers. WESTERN ELECTRIC CO. Inc. Sept. 21, 1961 [Oct. 7, 1960], No. 33794/61. Heading H3B. The cavity of an optical maser comprises a negative temperature medium between two spaced reflectors, at least one of which is concave. The reflectors are arranged so that stimulated radiation is introduced between the reflectors. As shown in Fig. 2a, two reflectors of the same radius of curvature may have a common focus f1. If the reflectors have different radii r1, r2, they are spaced by a distance L where 2L=r2+r1 - (r2<SP>2</SP>-r1<SP>2</SP>) ¢. A plane reflector may thus be arranged at the focus of a spherical reflector as shown in Fig. 2c. The reflectors may be mirrors of vapour-deposited metallic films or of multiple dielectric layers. The coherent light output is transmitted through the reflectors being about 1% of the incident light. Alternatively, the output may be obtained from the side as diffraction losses. Ruby may be used as the medium. Alkali metal vapours and vapours of rare earth salts such as europium chloride and samarium chloride are also suitable.
Patent GB-1011832-A (GB)
Title: Message exchange system
IPC: H04L12/54
Filed: 1964-08-19
Abstract: 1,011,832. Data transmission. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 19, 1964 [Aug. 20, 1963], No. 33829/64. Heading H4P. An exchange system comprises a queuing buffer to which the out-stations are connected and a central exchange which is connected to the buffer. The buffer receives messages asynchronously, and makes them available to the exchange on a synchronous time-multiplex manner, the characters in the buffer being recirculated until cancelled by the exchange. A character received from the buffer is stored at the exchange until the buffer is connected to the out-station to which the character is directed. The exchange operates on a machine cycle of 1520 character times and accommodates 95 out-stations. Each station is connected to the buffer once during a cycle and for one character time. The 15 character times between the connection of adjacent stations are used for switching operations in the exchange. Each message is preceded by address characters, three for each station to which the message is directed. The exchange determines whether or not the required out-station is free and, if free, the corresponding address characters are deleted from the buffer so that, when the message is recirculated and again presented to the exchange, the message is not repeated. The central exchange comprises delays SCD1-6 of one character delay, a transport delay TD and storage delay SD, each 95 characters long, and a control delay CD 1520 characters long. Address characters are preceded by a character indicating that address characters follow, which is recognized by 110. The following two address characters are stored in SD in the character position allotted to the sending- out station. When the third address character arrives, this is combined with the two already received and the address is stored in one of the delays SCD. During the next 96 character times unit 117 compares the stored address with binary numbers 0-94 generated by counter 119. The counter is synchronized to delay TD so that it indicates the character position currently available to logic 109. Delay SD is also in the same character position, and a bit is read in to reserve the use of the outstation and hence a position in TD. Further addresses reserve other character positions. When a character is received indicating that message characters follow, each message character is passed to the appropriate delay SCD selected during the address set up, and stays there for 96 character times. Control delay CD contains the numbers of the delays SCD in one or more of its character positions, set up during the address reception, and each time a delay number is read from CD the character stored in that delay SCD is read in to transport delay TD. Since each position in TD corresponds to a particular outstation, the character is read out to the buffer when the appropriate line time occurs. When the end of message character is received the reservation bits are cancelled in CD.
Patent GB-174822-A (GB)
Title: An improved cotter pin
IPC: F16B21/14
Filed: 1920-12-03
Abstract: 174,822. Abbott, J. S. Dec. 3, 1920. Pins for cottering.-A self-locking cotter pin of the bifurcated spring type has one tapered leg terminating in a notched head which engages the end of the hole into which the pin is inserted. The adjacent faces of the legs are in sliding contact and the head D springs into engagement when the notch has passed the end of the hole.
Patent GB-642446-A (GB)
Title: Improvements in devices for assembling paper boxes
IPC: B31B50/50
Filed: 1947-12-29
Abstract: 642,446. Box-making. BEMISS-JASON CO. Dec. 29, 1947, No. 34336. Convention date, June 22, 1945. [Class 18] A machine for folding box trays from blanks includes a plunger having portions co-operating with recesses in a die to cause interlocking between tabs on extensions of the box ends and tabs in the box sides. A suitable blank is described in Specification 590,829 and includes tabs 24, formed by cuts 55, 56, the edge formed by the cut 56 on each tab engaging that formed by a cut 26 in each side wall. The plunger 43 has wing portions 44 carrying projections 46 which co-operate with recesses 51 in rollers 31, 32 to open the cuts 26, the rollers 31, 32 folding up the box sides, as the plunger 43 descends. Further rollers 36, 37 fold up the box ends and cause the tabs 24 to enter the cuts 26. Stripping plates 58 remove the formed box on the plunger's return stroke. The plunger is actuated by cranks 74 and connecting rods 73 driven through a variable speed gear 79 by a motor 77. A conveyer 61 for removing formed boxes is chain driven from the crankshaft 76. Blanks are fed to the machine between guide rails 105, 107 and pushed into position against stops 41 by pushers 110. The pushers 110 are carried on arms 112 secured to a shaft 114 which is oscillated against a spring 116 by a crank arm 117 intermittently engaging a lever 123 secured to the shaft 114.
Patent GB-1272905-A (GB)
Title: Improvements in or relating to water gates
IPC: E02B7/42
Filed: 1970-07-15
Abstract: 1,272,905. Sluice gates. SOC GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES (ALSTHOM). 15 July, 1970 [13 Jan., 1970], No. 34385/70. Heading E1H. An automatic gate rendering the downstream level N substantially constant has a part-cylindrical apron 1 and a float 4 interconnected by arms 3 resting on a knife edge 2, which is provided by the upstream lip of a fixed tank 5. A slit 6 damps oscillations of the float. The effective breadth of the slit can be adjusted by shifting a plate 9, which is secured by screws 11 in slots 12. The plate 9 can be reversed so that a part 14 can retain a sealing member in the slit, Fig. 3 (not shown), while a counterweight 7 is adjusted.
Patent GB-806344-A (GB)
Title: Fabricating method
Inventor: JONES EDWARD RICHARD STANLEY
IPC: B29C70/68
Filed: 1955-12-02
Abstract: Reinforced articles comprising polythene are produced by coating a metal reinforcement with a thin layer of polythene, oxidizing this layer by baking it at a temperature above its melting-point, locating the coated metal reinforcement in a mould by means of pieces of polythene, and injecting molten polythene into the mould to surround the reinforcement and fuse with the pieces of polythene.  The initial coating is applied as described in the parent Specification, or by spreading on, or dipping the metal in, a polythene gel.  The process may be applied to a steel wire gauze.ALSO:Reinforced articles comprising polythene are produced by coating a metal reinforcement with a thin layer of polythene, oxidizing this layer by baking it at a temperature above its melting point, locating the coated metal reinforcement in a mould by means of pieces of polythene, and injecting molten polythene into the mould to surround the reinforcement and fuse with the pieces of polythene.  The initial coating is applied as described in the parent Specification, or by spreading on, or dipping the metal in, a polythene gel.  The process may be applied to a steel wire gauze.
Patent GB-343438-A (GB)
Title: Improvements in vertical boilers
IPC: F22B13/10
Filed: 1929-11-12
Abstract: 343,438. Vertical steam boilers. SPENCER, A. L. HITCHCOCK-, Odsey Corner, Ashwell, near Baldock, Hertfordshire. Nov. 12, 1929, No. 34539. [Class 123 (ii).] In boilers of Spencer- Hopwood type the watertubes a are arranged in one or more nests and a single row of manholes is disposed on opposite sides of the boiler for each nest so that two or more manholes b on one side expose tubes at the ends of the nest and one or more manholes c on the other side expose the remaining or central tubes. The manholes on one side may be arranged with their major axis at right angles to that of the manhole or manholes or the opposite side and in the case of several vertically spaced nests of tubes the arrangement may be the same for two or more nests or the direction of the manhole axes may be different for adjacent nests. Single manholes may also be located all on one side or alternated on each side for successive nests.
Patent GB-378747-A (GB)
Title: Improvements in cooking ovens
IPC: F24B1/00
Filed: 1931-12-14
Abstract: 378,747. Cooking ovens. LANDI, T., 38, Boulevard Henri IV, Paris. Dec. 14, 1931, No. 34592. Convention date, May 8. [Class 126.] A cooking device or oven for placing over a gas or other heater comprises a baseplate 1 with a large central aperture 6 above which is a platform 2 for supporting food utensils and having a baffleplate 3 below it, together with a bell-form cover 7 having divergent sides which encloses the cooking-space. The cover is provided with escape apertures 9 and eyelets 8 for the hooks of a lifting handle. In the apparatus shown the cover is elliptical in plan.
Patent GB-534394-A (GB)
Title: Improvements in and relating to door operated electrical switches
IPC: H01H13/18
Filed: 1939-10-18
Abstract: 534,394. Retractive switches. MEADE, T., and CAMPBELL & ISHERWOOD, Ltd. Oct. 18, 1939, No. 34686/38. [Class 38 (v)] A switch operated on opening a door to switch out lights in a room comprises a switch 8, actuated. by a pivoted or other member 9 spring-biassed to the " off " position, the switch mechanism being mounted on the detachable cover of a casing 3, attached to a door jamb &c. so that a plunger 6, bearing on the arm 9 is depressed when the door is shut. In a modification the inner switch is push-button operated.
Patent GB-1386885-A (GB)
Title: Semiconductor laser device
IPC: H01S5/20
Filed: 1972-07-25
Abstract: 1386885 Electroluminescence NIPPON ELECTRIC CO Ltd 25 July 1972 [30 July 1971] 34811/72 Heading C4S [Also in Division H1] In a double heterostructure semiconductor laser in which a P-type GaAs active region 12 is located between N- and P-type layers 11 and 13, respectively, an N-type GaAs layer 14 is superimposed on the P-type layer 13, and a narrow stripe P-type region 18 formed by Zener diffusion extends through layer 14 into layer 13, the laser excitation current between the region 18 and an N-type GaAs substrate 10 being confined to the active region area immediately adjacent the stripe region 18 by reason of the reverse bias between the N-type layer 14 and its P-type region 18. An electrode 19 extends over the surface of stripe 18, an insulating layer 15 of SiO 2  being optionally included between the exposed areas of N-type layer 14 and the electrode. A further electrode 21 is carried by the substrate 10. Preferably the layers 11 and 13 comprise Ga 0 . 7 Al 0 . 3 As, and the respective thickness of the layers 11, 12, 13 and 14 is 3Á, 0À5Á, 1Á and 2Á. The narrow stripe region 18 has a preferred depth of 2À2Á and a width of 5Á.
Patent GB-426389-A (GB)
Title: Improvements in or relating to photo-electric cells
IPC: H01J40/16
Filed: 1934-12-04
Abstract: 426,389. Photo-electric cells. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Dec.' 4, 1934, No. 34871. Convention date, March 14. [Class 39 (i)] In a photo-electric cell having an anode, a cathode, and an auxiliary electrode for producing secondary electrons, the auxiliary elec. trode and the cathode are connected by a high resistance. As shown, the cathode 2 and the auxiliary electrode 3 consist of a layer of caesium or other alkali metal on oxidized silver mirrors, and the auxiliary electrode is formed with a window 4 or is transparent. The anode 5 consists of metal gauze. The resistance 9, of the order of 5 to 100, and preferably 53 megohms, may be mounted in the envelope or cap, two contact pins only being required.
Patent GB-450808-A (GB)
Title: Improvements in or relating to plain bearings
IPC: F16C17/10
Filed: 1935-12-16
Abstract: 450,808. Bearings. AKTIEBOLAGET SVENSKA KULLAGERFABRIKEN, 17, Artillerigatan, Gothenburg, Sweden. Dec. 16, 1935, No. 34907. Convention date, Dec. 18, 1934. [Class 12 (i)] A combined radial and axial thrust bearing has inner and outer rings 1, 18, the bearing surface 2 on the ring 1 being narrower than the width of the ring. Thrust rings 14, 15, co-operate with the side faces of the flanges 3 on the ring 1 and are supported by oil circulating plates 12, 13, or like members. Oil passes to the bearing surfaces through passages 8, 16, and is circulated through clearance spaces 17 between the rings 14, 15 and the ring 18, and through holes 20 in the plates 12, 13. One of the rings 14, 15, may be omitted. The bearing dimensions correspond to the dimensions of standard ball bearings. The Specification, as open to inspection under Sect. 91 comprises also constructions shown in Figs. 1 and 5 (both Cancelled). In Fig. 1, a thrust plate 6 with holes 7 is fixed on one side of the outer ring 5 and an oil circulating plate 10 is fixed on the other side of the ring 5. In Fig. 5, thrust rings 26, 27, are secured to opposite sides of the inner ring 25, and the outer ring 20 has an oil reservoir 24 filled with wicking. This subjectmatter does not appear in the Specification as accepted.