baber/WOPTO huggingface dataset:
Patent GB-1481764-A (GB)
Title: Resin composition
IPC: C08L63/00
Filed: 1975-06-23
Abstract: 1481764 Epoxy resin composition SUMITOMO CHEMICAL CO Ltd 23 June 1975 [22 June 1974] 26581/75 Heading C3B A curable composition comprises (I) at least one copolymer of ethylene with an epoxy group containing unsaturated monomer; (II) at least one epoxy resin; and (III) at least one epoxy resin curing agent. Examples of I are (by wt.) 88 : 12 ethylene/glycidyl methacrylate; 90 : 10 ethylene/allyl glycidyl ether; 82 : 12 : 6 ethylene/glycidyl methacrylate/vinyl acetate and 95 : 5 ethylene/3,4-epoxy-3-methyl-1-butene copolymer. II may be a diglycidyl ether of bisphenol A or an epoxy novolac resin. III may be a polyamine, a polycarboxylic acid anhydride or dicyandiamide. A curing accelerator, e.g. dicyandiamide may additionally be present.
Patent GB-856910-A (GB)
Title: Oxygen producing canister
Inventor: BOVARD ROBERT MAURICE
IPC: A62B21/00
Filed: 1959-08-04
Abstract: 856,910. Respiratory appliances. MINE SAFETY APPLIANCES CO. Aug. 4, 1959, No. 26586/59. Class 81(2) An oxygen-producing canister for breathing apparatus comprises a housing 1 having an inlet 2 for respiration products, an outlet 3, and a solid bed 6 of coarse and dense granules adjacent the inlet 2 is characterised by a second bed 8 of smaller and less dense granules between the first bed 6 and the outlet 3, the granules comprising a chemical composition, preferably KO2, that will generate oxygen upon reaction with moisture in exhaled breath. The bed 8 has a bottom layer 9 of coarser, denser granules and a third or further beds, such as 13, similar to the bed 8 may be located between it and the outlet 3. The beds 6, 8 and 13 are spaced from each other and the openings 2, 3 by screens 7, 10, 11, 15, 16 and 17. Preferably, the densityof the smaller granules in beds 8, 13 is approximately of the density of the granules in the bed 6, the chemical material from which the smaler granules are formed having been compacked at 1300 Ibs. p.s.i. and that of the coarser granules at 1750 lbs. p.s.i. The preferred maximum dimension for each granule is between 3/8 and 5/8 inches in bed 6 and between 1/5 and 3/8 inches in beds 8 and 13.
Patent GB-1040795-A (GB)
Title: Improvements relating to ticket holders for storage or display shelving
IPC: G09F3/20
Filed: 1964-06-26
Abstract: 1,040,795. Shelving. D. M. JAMES. May 19, 1965 [June 26, 1964], No. 26671/64. Heading A4B. [Also in Division B8] A ticket holder comprising a strip 1 with rims 2 and an intermediate supporting rib 5 for a ticket 4 is attached to a shelf bracket B or other structural frame members C, D by clip members 17-19 at each end of the strip 1. The clips may be modified to very the angle of the strip 1 relative to shelves at different heights.
Patent GB-453467-A (GB)
Title: Electro bus-bar device for the ignition systems of internal combustion engines
IPC: F02P7/00
Filed: 1935-09-27
Abstract: 453,467. Couplings; conductors. WEIR, Ltd., G. & J., Holm Foundry, Cathcart, and PULLIN, C. G., 104, Queen's Drive, both in Glasgow. Sept. 27, 1935, No. 26720. [Classes 36 and 38 (i)] High tension leads and terminal elements therefor of an internal-combustion engine are embedded in a carrier of insulating material, which is made in two or more parts. As shown, the carrier 1 carries input and output terminal elements 2, 3 which are connected by the embedded wires 4. The shape of the carrier varies for different engines and circular carriers for radial type aero-engines are disclosed in the Specification. The carrier may be sheathed with screening metal and the output terminals, instead of being washers as shown in Fig. 3, may incorporate adjustable means permitting limited shift to suit staggered or non-uniform pitching of the sparking plugs.
Patent GB-975987-A (GB)
Title: A process for use in the production of a semi-conductor device
IPC: H01L21/60
Filed: 1962-07-11
Abstract: 975,987. Semi-conductor devices. SIEMENSSCHUCKERTWERKE A.G. July 11, 1962 [July 14, 1961], No. 26729/62. Heading H1K. In a process for producing a semi-conductor device a carrier plate is connected to one flat face of a monocrystalline semi-conductor wafer, e.g. of silicon or germanium, and a gold foil is alloyed to the other flat face of the wafer forming an electrode of the gold-semi-conductor eutectic after which a second carrier plate with a silver coating thereon is applied to the electrode and the assembly is subjected to heat and pressure at a temperature below the melting point of the gold semi-conductor eutectic to unite the carrier plates together. In the embodiment the carrier plate 2 which may be of molybdenum, or tungsten is joined to a P-type silicon wafer by a layer of aluminium 4 and a gold antimony foil 5 is then applied to the other flat face of the wafer. The exposed surfaces of the wafer 4 may be etched and then coated with a protective lacquer, e.g. silicon lacquer having an addition of alifarin prior to the uniting of the carrier plates. Further, before uniting the surfaces of silver and gold-semi-conductor eutectic, they may be surface lapped. A silver coating may be applied to the outer surfaces of the carrier plates for soldering to external cooling members. The surface of the silver layer to be united with the eutectic electrode may be formed with protuberances which are lapped so that they all lie in a plane forming a system of channels which become filled with a cast resin 8 once the parts 5 and 7 are united.
Patent GB-1005034-A (GB)
Title: Improvements in and relating to plastic fasteners
Inventor: FERNBERG ERIC BERGER
IPC: F16B19/10
Filed: 1961-08-22
Abstract: 1,005,034. Stud fastenings; clip fastenings. F. T. PRODUCTS Ltd. Aug. 10, 1962 [Aug. 22, 1961], No. 26781/63. Divided out of 1,005,033. Drawings to Specification. Heading E2B. [Also in Division F2] The subject matter of this Specification is substantially the same as that described in the original Specification with respect to Figs. 1-5, but Claim 1 is directed to the features that the bore 19 in the rivet head forms a passage extending into the shank, that the pin is hollow and joined only to the head (where the pin is open) and that the thickness of the pin wall increases smoothly from the open end of the pin over at least one half of the length of the pin bore.
Patent GB-1302815-A (GB)
IPC: G03B15/05
Filed: 1971-04-19
Abstract: 1302815 Discharge flash apparatus FRANKE & HEIDECKE GmbH [trading as ROLLEIWERKE FRANKS & HEIDECKE] 19 April 1971 [7 March 1970] 26891/71 Heading H2H In a discharge flash apparatus comprising means for short circuiting the flash tube being means to control the light output, a plurality of thyratons or thyristors 3, 4 are connected in parallel between leads 1, 2 across which is connected the flash tube (not shown), the current supply leads 5, 6 of the thyratrons being wound on an inductive core 7 to provide firm inductive coupling to prevent excessive current flowing through one of the thyratrons, and therefore damage resulting. In operation, the thyratrons are gated at a desired time in the flash interval and the currents U 1 , U 2  in the supply leads cause oppositely directed circulations in the core 7 producing a net circulation acting on the large current so as to reduce it and render the currents equal. The number of thyratrons used may be more than two and a plurality of cores may be used, see Figs. 2, 3 (not shown).
Patent GB-912320-A (GB)
Title: Improvements in continuous fasteners
IPC: B29D5/00
Filed: 1958-08-21
Abstract: 912,320. Sliding clasp fasteners. DOELTER, G. Aug. 20, 1959 [Aug. 21, 1958], No. 26958/58. Class 44. [Also in Group XXII] A continuous fastener for joining the edges of two parts of flexible material comprises a row of fastener elements along each elge, each fastener element being of U-shape with the limbs of the U facing the opposite row of elements and gripping an edge of one part. The enlarged heads 16 of the elements interengage, with parts 24 of the heads overlying the lower limbs 18 of opposite elements so that pivotal motion about an axis along the rows of elements is prevented as well as separation of the elements. The elements are formed from a strip of material, and after separation from the strip are formed with a neck 17, then pressed by a former into a mould to give a U-shape, and finally closed on to a tape 10. Specifications 723,998, 769,535, 769,536 and 769,537 are referred to.
Patent GB-244245-A (GB)
Title: Improvements in foot pumps
IPC: F04B33/00
Filed: 1924-11-12
Abstract: 244,245. Clark, A. L. Nov. 12, 1924. Actuating pumps by foot power; oscillating - cylinder pumps. - A foot pump for tyre inflation &c. comprises a base. with the cylinder pivoted to one end and a lever carrying a foot plate pivoted at the other, the piston rod being fixed to a bar pivoted on the foot lever and a volute spring surrounding the piston rod between this bar and the cylinder end. The cylinder 2 is carried from the base member by lugs 4 on its cap 3, so that it pivots about an axis below its axis of symmetry. The piston rod is connected to a bar 9 pivoted between the strips 7 which constitute the foot lever, and is surrounded by a volute spring 10 fixed to the cap 6 and bearing on the bar 9. For packing purposes, a link 11 on the cap 3 engages a hook 12 on the foot plate.
Patent GB-1154403-A (GB)
Title: Image comparison tube and method of comparing optical images
IPC: H01J31/18
Filed: 1966-06-17
Abstract: 1,154,403. Cathode ray storage display tubes. INTERNATIONAL STANDARD ELECTRIC CORP. 17 June, 1966 [22 June, 1965], No. 27104/66: Heading H1D. In a method of comparing a reference image and an optical image, a high velocity electron beam from photocathode 16 in a pattern corresponding to either one of the images, generates a charge pattern on storage screen 21 comprising wire mesh covered with Mg F or ZnS for instance. Subsequently a low velocity beam of electrons emitted from the same photocathode in a pattern corresponding to the other image passes through the storage electrode only in areas of overlap of the two images and forms the display on phosphor screen 28, or alternatively electron multiplier 39 (Fig. 2, not shown) may be included with split anode collector 40 (e.g. semicircular segments as in Fig. 7 (not shown) or quadrants) for relative rotation measurements for example. In Fig. 2 (not shown), disc electrode 35 with a pin hole aperture may be used to modulate a writing beam from a small uniformly illuminated portion of the photocathode or for comparing an image represented by the electrical input signals to electrode 35 with an image already on the storage electrode. The pencil beam may scan in a raster as in a commercial TV system. Fig. 4 (not shown) includes second storage electrode 21a associated with elements analogous to the first stage cylindrical anode 26 (the second stage anode preferably being twice as long as the first stage anode), focusing solenoid 32 and horizontal and vertical deflection coils 33 and 34 and collector grid 20. A flood beam of low velocity electrons, accelerated to a high velocity on emergence from storage electrode 21, transfers a charge pattern from storage electrode 21 to storage electrode 21a. A second image then stored on the former electrode may be compared by a further flood beam. The image size may be adjusted by electrostatic or magnetic optics. Electrostatic and/or magnetic focusing and deflection may be used.
Patent GB-1092324-A (GB)
Title: Improvements in forage harvesters
Inventor: WEZEL ALFRED JOHANNES
IPC: A01D90/06
Filed: 1964-07-01
Abstract: A forage-harvester which delivers cut crop into windrows comprises a flail-assembly 13 which cuts the crop and conveys it to a driven horizontal auger 20 running in a trough 17 from the outer end of which the crop is dropped gently to the ground.  The forage-harvester may have the conventional delivery-shoot 14 which can be blanked-off by a plate 16 so that the crop is delivered to a hood 25 overlying the auger 20, which is supported in bearings at one end only.  The trough 17 is of stressed-skin construction to reduce flexure, since it is also unsupported at its open end. In a modification, the delivery shoot is replaced by a hemi-toroidal shoot extending between the flail-cylinder and auger.  The forage-harvester is mounted on links so as to be alongside the tractor rear-wheels and to deliver the windrow behind the nearside wheel so that on subsequent traverses the tractor wheels never run over the discharged crop.
Patent GB-323190-A (GB)
Title: Electric imitation fires
IPC: F24C7/00
Filed: 1928-09-21
Abstract: 323,190. Berry, H. H. Sept. 21, 1928. Electric stores.- An imitation electric fire employing "fuel" of log form is provided with a reflector 15 behind the canopy which throws the light and heat from a heating- element 10 on to a rear reflector 11. In Another form the heating-element is arranged immediately in front of a reflector in the rear upper portion of the stove. Specifications 210,968 and 225,081 are referred to.
Patent GB-1465864-A (GB)
Title: Process for producing pentaerythritol
IPC: C07C27/00
Filed: 1975-06-26
Abstract: 1465864 Pentaerythritol MITSUI TOATSU CHEMICALS Inc 26 June 1975 [5 July 1974] 27152/75 Heading C2C In a process for producing pentaerythritol by reacting formaldehyde and acetaldehyde in aqueous solution in the presence of sodium hydroxide, which includes the steps of adding sodium hydroxide to an aqueous solution containing pentaerythritol and sodium formate to allow the sodium formate to crystallize for separation from the aqueous solution and circulating the formate-separated solution for use as part of a starting reaction solution for producing pentaerythritol, at least part of a reaction solution containing pentaerythritol formals is thermally treated in a pH range of 4À5-5À5 at a temperature of 120-170‹C. for 20-120 minutes to decompose the pentaerythritol formals, the resultant pentaerythritol is crystallized and separated from the solution, sodium hydroxide is added to the residual solution which contains pentaerythritol and sodium formate to crystallize the sodium formate and the crystallized sodium formate is separated from the solution. The reaction of formaldehyde and acetaldehyde occurs under known conditions, e.g. at 35‹ C. The extent of decomposition of the formals in the thermal treatment is preferably such that, in the solution after separation of pentaerythritol crystals, the concentration of pentaerythritol formals, expressed as combined formaldehyde, is not more than 3% by weight. All or part of the circulating reaction solution may be thermally treated to decompose formals before separation of pentaerythritol; some pentaerythritol may be separated from the solution before the thermal treatment. The reaction product may be fed for example to a distillation column where excess formaldehyde is removed, and the decomposition of formals may take place in the bottom of that column.
Patent GB-672742-A (GB)
Title: Improvements in machines for moulding and wrapping plastic material, for example-butter
IPC: B65B25/06
Filed: 1949-10-22
Abstract: 672,742. Wrapping butter. BRECKNELL, MUNRO & ROGERS, Ltd., and LAWSON, C. W. Oct. 23, 1950 [Oct. 22, 1949], No. 27163/49. Class 94(i) [Also in Group V] Butter is fed into a chamber 5 in an intermittently rotating moulding cylinder 1 by a screw 10. The cylinder is rotated through 90 degrees and the moulded block of butter is expelled from the chamber by a piston 6 into a wrapping pocket 30, the side walls 34, 36 of which temporarily open out by means of a cam 41 to receive the block. The pocket 30 is held stationary while the cylinder is rotated to move the piston 6, which has a cylindrical end surface, past the wall 34 of the pocket with a continuous wiping action. After the cylinder has moved through about 30 degrees, the wrapping element 3 then rotates through 90 degrees at a faster rate than the cylinder so that they travel through a quarter revolution in the same time. Prior to the butter being expelled into a pocket, a wrapper is lifted from a magazine 18 by a suction roller 16 and placed on guide rails 17. The lefthand end of the wrapper is then seized by a gripper 19 which moves it across the mouth of the wrapping pocket, and then releases it. As the piston 6 moves across the front wall 34, a spring-mounted blade 35 moves across to fold the left-hand side of the wrapper over the block. The righthand side of the wrapper is folded over the block by a member 45 pivoted about an axis 4. This member starts to move under the block, just before the wrapping element 3 begins its quarter revolution, in order that may help the blade 35 to support the block. The wrapping of the ends is completed, the block, compressed and the fully wrapped blocks delivered to a conveyer. The piston rods 58, Fig. 6, of the pistons 6 have slidable end members 61, to enable the length of each piston rod to be varied and thus individually adjust the amount of butter each chamber receives. The innermost positions of all the pistons, and thus the depth of the chambers, are simultaneously adjusted by a wheel 71 which effects longitudinal movement of a member 69, Fig. 6, having four wedge surfaces. The pistons are moved inwardly and outwardly at their charging and discharging positions by fixed and movable cams 88, 95, 79 and 85 which engage rollers 63 on the piston rods. The mechanism for intermittently rotating the moulding cylinder 1 is described with reference to Figs 12, 12a (not shown). Lubricating oil may be contained in a sealed casing 97.
Patent GB-757299-A (GB)
Title: Improvements in or relating to false-twisting devices for filaments or yarns
IPC: D02G1/06
Filed: 1954-02-02
Abstract: 757,299. Twist tubes. HEBERLEIN & CO., AKT.-GES. Feb. 2,1954 [June 23, 1953], No. 27185/55. Divided out of 757,242. Class 120 (2). A twister attached to one end of a spindle of a false-twisting device consists of a unitary member of hair-pin shape having a central thread-engaging portion and two limbs extending from it in the plane of the tube axis. Embodiments of twisters are illustrated in Figs. 1, 2, 4 and 5.
Patent GB-608765-A (GB)
Title: Improvements in or relating to gas-heated water heaters
IPC: F24H1/16
Filed: 1945-10-18
Abstract: 608,765. Making heat-exchangers. MAIN WATER HEATERS, Ltd., and CHAPMAN, F. W. Oct. 18, 1945, No. 27419. [Classes 83 (ii) and 83 (iv)] [Also in Group XIII] Soldering.-In a gas-heated water heater comprising a skirt 10 formed by two nested metal walls 12, 13 soldered together and abutting over substantially their whole area except opposite an embracing helical cold water supply pipe 11 (see Group XIII), one of the walls has apertures 14, which may be circular or rectangular and narrow, for the flow of molten solder. The solder may be applied in measured quantities to each hole as a paste comprising an aqueous suspension of finelyground tin and lead with a flux, and may then .be melted by a soldering bit.
Patent GB-598493-A (GB)
Title: High-frequency electromagnetic-wave translating arrangement
IPC: H01P3/00
Filed: 1945-10-18
Abstract: 598,493. Modifying line circuits to improve transmission. HAZELTINE CORPORATION. Oct. 18, 1945, No. 27436. Convention date, Nov. 16, 1944. [Class 40 (iv)] [Also in Groups XXXVI and XL] A high-frequency propagating path has interposed in it an element for modifying the velocity of wave signal propagation in the path, the element being composed of dielectric and magnetic materials combined in such proportions that the ratio of effective dielectric constant to effective magnetic permeability for the element is equal to that for the propagating path. Thus, the characteristic impedance is not altered by the presence of the element, and no reflection results. Fig. 1 shows the invention applied to a two-conductor balanced transmission line 11, 12 held in spaced relation by spacers such as 10 and otherwise using an air dielectric. The spacer 10 comprises layers 13 of dielectric such as polystyrene and layers 14 made of comminuted iron dispersed in a dielectric material. The relative thicknesses of layers 13, 14 are chosen having regard to the dielectric constants and magnetic permeabilities from a formula given in the Specification. such that the ratio of effective dielectric constant to effective magnetic permeability is unity as for the remaining air dielectric. Although reflection is avoided, the velocity of propagation is reduced, thus, where it is desired to increase the effective electrical length of a transmission line, values are chosen which give a high value both to the dielectric constant and to the magnetic permeability. In some cases, the layers of magnetic material may be spaced by small insulating spacers, being thus mainly separated by air dielectric. Fig. 2 shows a coaxial line 11<1>, 12<1> with three forms of spacer 10<11>, 10<111>, 10<1111>. Spacer 10<11> comprises layers 13<1> of dielectric and layers 14<1> of magnetic material proportioned according to the invention to give the desired characteristic impedance, and extends for the whole length of the line. This gives a flexible line when the outer conductor 11<1> is braided and the inner conductor 12<1> is stranded. Spacer 10<1111> is similar, but extends only a short length and is used in a rigid line. In spacer 10<1111> the magnetic material 14<11> is in one central core surrounded by a dielectric layer 13<11>. In this case, allowance has to be made for the fact that the potential gradient between the inner and outer conductors varies exponentially. Instead of separating the magnetic material by a solid dielectric, air gaps may be used to give the desired ratio. Figs. 3a, 3d show two forms of spacer made of magnetic material 20, 20<111> in which air gaps are used. Other forms are described, Figs. 3b, 3c (not shown). Any desired length of such spacers may be inserted in a line to increase its electrical length without causing reflections. Specification 598,494 is referred to.
Patent GB-260772-A (GB)
Title: Improvements in or relating to cigarette papers
IPC: A24D1/02
Filed: 1925-11-02
Abstract: 260,772. Dell, B. E. Nov. 2, 1925. Cigarettes. - A cigarette paper is formed at one or both ends with a tab b having a perforated portion adapted to cover the end of the cigar. ette and a relatively small extension or tongue c by which it may be secured in position. The perforations may represent a design, trade mark, or the like.
Patent GB-1536594-A (GB)
Title: Mechanism and a method for the support and stepwise rotation of a member
IPC: F16H27/02
Filed: 1977-06-30
Abstract: 1536594 Friction ratchet gearing ASSOCIATED ELECTRICAL INDUSTRIES Ltd 30 June 1977 [1 July 1976] 27451/76 Heading F2Q A roller or shaft 7 is lifted off a base 1 on which it rests by a lever 3 pivoted by a jack 4, a beam member 5, on which the shaft 7 now rests, being moved linearly by a ram 6 to cause the shaft 7 to rotate, the jack 4 then being lowered. As the beam 5 moves the shaft 7 bears against a stop 8 in the form of a roller. Two stops 8 are shown but there may be one only with the base 1 tilted. Shaft 7 may comprise a turbine rotor or generator armature, in the process of manufacture.