baber/WOPTO huggingface dataset:
Patent GB-564030-A (GB)
Title: Improvements in or relating to reels, spools or the like
IPC: B65H54/42
Filed: 1942-12-22
Abstract: 564,030. Feeding webs. KINGSBURY, A. W. G. Dec. 22, 1942, No. 18216. [Class 100 (i)] [Also in Group XXV] A reeling device, for use in recovering a length of material wound upon a cable is provided with frictional means for restraining slip between a driving member and the reel, and the amount of slip permitted is determined by the movement of a cam under control of a roller engaging the strip running on to the reel. The reel 15 is mounted upon the driving member 10 and a nut 28 and spring washer 29 hold the reel against a bearing 23. The strip or other material 19 passes over the roller 21 carried by an arm 20 having a boss forming a cam member 24 engaging a second cam member 25 on a fixed sleeve. A spring 26 serves to hold the arm 20 in its normal position, and the tension in the material 19 acts against the spring to rotate the cam to release the side pressure on the reel. The device may be arranged for winding a length of material on to a cable.
Patent GB-671461-A (GB)
Title: Improvements in or relating to radar systems
Inventor: BRANDON PERCY SAMUEL
IPC: G01S13/536
Filed: 1948-07-07
Abstract: 671,461. Radiolocation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 22, 1949 [July 7, 1948], No. 18300/48. Class 40 (vii). In a frequency-modulated radar system in which the direct and reflected signals are heterodyned to give a beat frequency indicative of the target distance, means are provided for indicating the distance of targets having a relative radial velocity within a predetermined range of velocities or for indicating the relative radial velocity. The invention utilizes the fact that the beat frequency produced by a stationary target comprises a group of components, Fig. 1 (not shown), which are harmonics of the modulating frequency whereas a moving target produces corresponding components, Figs. 2 and 34 (not shown), which are displaced by the Doppler shift frequency and according to the invention the Doppler shift frequency is extracted by heterodyning the beat frequency with harmonics, Fig. 3 (not shown), of the modulating frequency; alternatively both the beat frequency and the harmonics may be frequency-changed by a common local oscillator before being combined. The invention is described as applied to a known system in which the beat frequency output from 5 produced by heterodyning the direct output from transmitter 2 and the reflected signal received at 5 is analysed by heterodyning it at 6 with a cyclically varying frequency from oscillator 7 and applying the resultant sum or difference signal to a band-pass I.F. amplifier 8 whose output comprises short trains of oscillations occurring at a time relative to the variation period of oscillator 7 which is dependent on the beat-frequency and hence on the target distance. Harmonics of the transmitter modulating frequency produced at 16 are applied to mixer 17 and amplifier 18 which are similar to mixer 6 and amplifier 8 and the outputs from amplifiers 8 and 18 are heterodyned at 9 to give short trains of oscillations of Doppler frequency which are applied through a filter 13 passing the desired range of Doppler frequencies to an amplifier 15 and indicator 14, e.g. frequency meter or loud-speaker. In order to avoid ambiguities from targets having different velocities within the predetermined range, the modulation frequency should be at least twice the upper limit of filter 13; saw-tooth or triangular modulation may be employed. The output from filter 13 may also be applied to produce a P.P.L. or type-A display of all targets within the predetermined range of speeds. Since the distance search by oscillator 7 is comparatively slow, a long time is required to complete a P.P.I. display and this may be reduced by combining the outputs from several systems searching different limits of distance.
Patent GB-877092-A (GB)
Title: Improvements in and relating to closed packages
IPC: B65D75/50
Filed: 1959-05-29
Abstract: 877,092. Packages. HERMORION Ltd May 29, 1959 [June 3, 1958], No. 18363/59. Class 94(1). A container, formed from a paper web which is coated on one side with a plastic and having the shape shown in the Figure, has a blister-like cavity 11 at one end of one seating fin and a tear slit 12 leading to the cavity. On tearing open the package a pouring spout is obtained.
Patent GB-312521-A (GB)
Title: Improvements in and relating to plate clamping and supporting means for printing cylinders
IPC: B41F27/10
Filed: 1928-06-25
Abstract: 312,521. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). June 25, 1928. Printing-surfaces.- For printing continuous patterns on webs the printing-cylinders are fitted with plates which are readily changeable, and which are so constructed that the, printing-surfaces abut without margin spaces, and either half of a cylinder may be fitted with two wide plates or four plates of half width. As shown, a plate cylinder 1 is fitted with two wide semi-cylindrical plates 4, 5, and four plates 6 - - 9 of half the width. The upper plates are formed with bevelled recesses 10, 11 which receive the bevelled sides 14, 15 of a clamp ring 16 arranged centrally of the cylinder 1, and the projecting ledges 12, 13 of the plates are trimmed to abut closely so that there are no margins between the surfaces 4, 5. The outer bevelled edges 17 of the plates 4, 5 are engaged by screw-operated clips 18 which clamp the plates against the ring 16. The lower plates 6 - - 9 are constructed similarly to the plates 4, 5, but additional sliding clamps 23 similar to the ring 16 are provided, and the four plates are finally secured by screwing up the outer clips. Circumferential movements of the plates are prevented by bars 27 which engage shoulders 28 on the plates, which are also formed with overlapping projections 29 abutting closely to one another to secure continuity in the design.
Patent GB-1381551-A (GB)
Title: Rotary change-over selectors for tapchangers
Inventor: VAN RIEMSDIJK G A
IPC: H01H9/00
Filed: 1972-04-20
Abstract: 1381551 Regulating switches SMIT NIJMEGEN ELECTROTECHNISCHE FABRIEKEN NV 20 April 1972 [20 April 1971] 18442/72 Heading H1N A rotary change-over selector switch for use in an on-load tap-changer to select coarse voltage steps under no-load conditions only comprises a plurality of fixed main contacts 6, 7, 8 arranged in the surface of a ring, and two mechanically rigidly interconnected, but mutu - ally insulated, switching contact arms 28 rotatable about the axis of the main contact ring for co-operating with the main contacts each arm 28 being electrically connected and rigidly attached to a respective conductive ring-segment 29 lying concentrically within the main contact ring and permanently engaged by a respective one of two fixed auxiliary contact arms 30; the arrangement being such that all the fixed and rotatable contacts lie substantially in the same plane transverse to the axis of rotation, and such that in each selected position of the switch the two rotatable contact arms 28 are in contact with one and the same main contact, but in transition one arm engages the next adjacent main contact before the other arm leaves the said one main contact For heavier currents each of the arms 28 and 30 may consist of two parallel arms (28<SP>1</SP>, 28<SP>11</SP>, 30<SP>1</SP> and 20<SP>11</SP>, Fig. 3, not shown), respectively.
Patent GB-857936-A (GB)
Title: A process for the production of high molecular weight polyethylene terephthalate
IPC: C08G63/78
Filed: 1959-05-29
Abstract: In a process for the production of high molecular weight polyethylene terephthalate by trans-esterifying dimethyl terephthalate with ethylene glycol and subjecting the diethylene glycol terephthalate thus produced to condensation polymerization in the presence of a catalyst, the condensation polymerization catalyst is intimately mixed with a small quantity of the reaction mixture resulting from the transesterification reaction and the resulting mixture is added in a solid and compact form to the batch which is to be subjected to condensation. polymerization. The catalyst may be dispersed in a small quantity of molten reaction mixture from the trans-esterification reaction, the resulting dispersion is solidified, broken up or pulverized and then pressed to form tablets which are added to the batch to be subjected to condensation polymerization.  Alternatively tablets are formed from mixtures of catalyst and solid reaction mixture. Preferably the catalyst is added when the batch has a relative viscosity of from 1,08 to 1,2 and is under a vacuum of lower than 15mm. Hg.  Examples are given employed tablets prepared from pulverised trans-esterification reaction product, zinc acetate and antimony trioxide.
Patent GB-755369-A (GB)
Title: Light-sensitive silver halide emulsions containing fog inhibiting agents
IPC: G03C1/34
Filed: 1954-06-24
Abstract: Polyethylene oxide phenyl ether is prepared by introducing ethylene oxide (approximately 28.3 mols.) slowly into a mixture of phenol (1 mol.) and benzene containing boron trifluoride-ethyl ether complex at 50-60 DEG  C.  A polyethylene oxide-glycine compound is prepared by heating together glycine (1 mol.), ethylene oxide (20 mols.) and sodium acetate in a sealed tube.  A polyethylene oxide-lauramide compound is prepared by heating together lauramide (1 mol.), ethylene oxide (20 mols.) and sodium carbonate in a sealed tube.  A polyethylene oxide-glucose monolaurate compound is similarly prepared.
Patent GB-639249-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G21/22
Filed: 1948-07-10
Abstract: 639,249. Endless-chain conveyers. FISHER & LUDLOW, Ltd., and ORWIN, O. J. B. July 10, 1948, No. 18591. [Class 78 (i)] In a conveyer of the kind in which the chain runs on a track and has two sets of rollers, one set of which is mounted for rotation about a vertical axis to form guide rollers and the other set of which is mounted for rotation about a horizontal axis to form load bearing rollers, adjacent sections of track are connected by a member which provides a continuous support for the load bearing rollers and is adjustable longitudinally within predetermined limits relatively to one section to permit of adjustments in the length of the track and tension of the chain being made. The connecting member 9 is shown applied to a conveyer constructed as described in Specification 639,244. The sections 10, 11, Fig. 2, of the track are connected to the member 9 by plates 26, Fig. 3, which differ from the plates 22, Fig. 4, used for spacing apart and supporting the track since their bottom lugs 27 are at a lower level than the flanges 20 of the track. The plates 26 are secured by bolts 29 to square metal plates 28 which are welded into the spaces below the flanges 21 of the track. The upper part of the track of section 11 extends to the right of plate 26, but the guide flanges 14, 16 are cut away to leave a space for the reception of two sets of extensible rails 31 for supporting the load bearing rollers 15 of the conveyer chain. Each set of rails consists of a number of angle bars of which the alternate bars 32 are connected to the plate 26 of section 10 and the alternate bars 33 are secured to the plate 26 of section 11. An intermediate plate 35 similar to the plate 26 is secured to the bars 33 and also to the track. The plate 35 is connected to the plate 26 of section 10 by a pair of longitudinal threaded members 36 which pass freely through holes in the plate 35 and carry adjusting nuts 37 by turning which section 11 can be displaced in either direction relatively to the section 10. A channel member 38 attached to one plate 26 is slidably mounted in a similarly shaped member 39 secured to the other plate 26 and to the plate 35. Specification 655,886 is referred to in the Provisional Specification.
Patent GB-997259-A (GB)
Title: Improvements in shipping containers
IPC: B65D88/12
Filed: 1964-05-05
Abstract: 997,259. Boxes. FRUEHAUF CORPORATION. May 5, 1964 [June 21, 1963], No. 18668/64. Heading B8P. A shipping container with vertical side and end walls has comer posts to each end of which, i.e. at each comer of the container, is fixed a steel corner casting such that the comer posts overlie the outer vertical faces of the comer castings. Stainless steel corner posts 12, 14, 16 18 are welded to the steel corner castings 20, 22, 24, 26 and to four similar castings at the bottom of the case as shown so that loads applied to the castings are transmitted in shear to the attached posts which also serve to protect the castings from abrasion during handling. The castings are provided with an aperture 32 to accommodate a lug on a spreader bar (not shown) for lifting purposes.
Patent GB-182812-A (GB)
Title: Improvements in quick-running internal combustion engines
IPC: F02M31/18
Filed: 1922-07-08
Abstract: 182,812. La Corsa, L. U. July 9, 1921, [Convention date]. Vaporizers, external.-A rich mixture heated in a vaporizer traversing or projecting into the combustion chamber is drawn into the cylinder during the first part of the suction stroke, and air is admitted during the remainder of the suetion stroke. The air is drawn through a petrol carburettor which is used at starting, the petrol being cut off when the rich mixture is used. In one form the vaporizer 4, Fig. 1, traverses the combustion chamber and consists of perforated diaphragms in a tube; the end 8 of the tube is turned up to prevent any liquid fuel from flowing to the inlet valve. In another form the vaporizer 4, Fig. 5, projects into the chamber, the fuel having to pass through a tortuous path and perforated baffles.
Patent GB-808706-A (GB)
Title: Improvements in or relating to activation of aluminium
IPC: C07F5/06
Filed: 1956-06-18
Abstract: Aluminium to be used in the preparation of organic or organometallic compounds is activated by heating in the presence of a compound RnM where R is an alkyl or aryl radical, M is a metal other than aluminium and n is a whole number to a temperature of at least 150 DEG  C. and below the ultimate decomposition temperature of said compound.  Preferably the activation may take place in the presence of hydrogen.  An inert solvent may also be used such as pentane, cyclopentane, hexane, cyclohexane, heptane, cycloheptane, octane, nonane, decane or decahydronaphthalene.  It is also preferred that the metal is above hydrogen in the electrochemical series.  Specified activators include pentamethyl-, triethyl- and trimethyl-antimony; di-n-butyl-, diethyl-, dimethyl- and dipropyl-beryllium; methyl-, tri-ethyl-, tri-methyl- and triphenyl-bismuthine; di-isoamyl-, dibutyl-, di-isobutyl-, di-ethyl- and dimethylcadmium; triethyl- and trimethyl-gallium; tetra-methyl-, tetra-ethyl-, tetra-phenyl- and tri-ethyl-lead; diethyl zinc; tetra phenyl germanium; and di-ethyl-di-iso-amyl-, diethyl-di-isobutyl-, diethyl-, dimethyl-di-isobutyl-, dimethyl-diethyl-, di-p-tolyl-, di-p-xylyl-, ethyl-n - propyl - di - isoamyl -, tetra - isoamyl-, tetrabenzyl -, tetra - isobutyl -, tetracyclohexyl -, tetraethyl -, tetramethyl -, tetrapropyl -, tetra - o - tolyl -, tetra - m - tolyl -, tetrap - tolyl -, tetra - p - xylyl -, tetra - m - xylyl-, tri - isobutyl - iso - amyl -, tri - isobutyl - ethyl-, triethyl - isoamyl -, triethyl - isobutyl -, triethyl - phenyl -, triethyl - n - propyl -, triethyl-, trimethyl - ethyl -, trimethyl -, triphenylbenzyl -, triphenylethyl - and triphenyl methyltin.  The aluminium is preferably comminuted by grinding, milling, drilling or other operation.  The heating is preferably for a period of at least 1/2 hour, using a minimum of 5-10 per cent of activator based on the aluminium.  The activated aluminium may be isolated and stored in nitrogen or oxygen-free hexane, or more conveniently it may be reacted without being isolated with an olefin and hydrogen to give an aluminium alkyl or an alkyl aluminium hydride.  It may also be reacted with carbon tetrachloride to give hexachlorethane.  In an example aluminium chips are heated with di-n-butylberyllium in the presence of hydrogen for 3 hours at 190 DEG  C.  After activation, isobutylene and hydrogen are added to produce tri-isobutylaluminium.
Patent GB-851219-A (GB)
Title: Improvements in or relating to printing coloured photographic positives
IPC: G03B27/73
Filed: 1957-06-14
Abstract: 851,219. Colour photography. PHILIPS GLOEILAMPENFABRIEKEN N. V. June 14, 1957 [June 19, 1956], No. 18844/57. Class 98(2) A test positive print is made from a coloured negative and is viewed by light having passed through and/or been reflected from colour selection interference filters with adjustment of the spectral composition thereof as by adjustment of the intensity of the light source or sources to give a desired colour effect, and then a final print is made from the negative using light reflected from and/or passed through the colour selection interference filters and having a spectral composition complementary to that of the light used in viewing the test print. The method is explained with reference to diagrammatic drawings, thus in Fig. 2 three light sources 21, 22, 23, stated as a rule to be arranged on a circle but here for simplicity shown in the plane of the drawing, co-operate with interference filters B121, G122, R123 to reflect light as 21b, 22g, 23r onto a previously made test print 26 in accordance with the chosen intensity of sources 21, 22, 23 to give the desired effect and pass light 21g,r, 22b,r and 23b,g onto the coloured negative 24 and thence printing paper 25, which is processed to form the final print. The test print may be made by light of the same spectral composition as that by which the final print is to be viewed. Fig. 3, not shown, indicates operation by use of two interference filters only but two light sources for each of them.
Patent GB-708747-A (GB)
Title: Improvements in or relating to welding control arrangements
Inventor: SLEE KENNETH VICTOR
IPC: B23K11/24
Filed: 1951-08-10
Abstract: 708,747. Control systems for resistance welding. STANDARD TELEPHONES & CABLES, Ltd. Aug. 8, 1952 [Aug. 10, 1951], No. 18859/51. Class 38(4) A control system for a plurality of welding machines comprises a control relay CR for each machine and one or more insulating rotors 1 which are driven at uniform speed (preferably synchronously with the A.C. supplying the machines) and are provided on their surface with conducting areas 2-13 co-operating with a number of sets of brushes equal to the number of machines to be controlled by each rotor. Each set of brushes comprises brushes 14-16, Fig. 2, which co-operate with conducting areas 4-6, respectively, to control the relay CR, and brushes 17, 18 which co-operate with conductive areas 2, 9 (or 12) to control the primary circuit of the welding transformer WT. To reduce sparking at the power supply circuit brush 18 as it engages and leaves the conductive areas 9, 12, these are connected to the auxiliary areas 8, 10 and 11, 13 (each of half a cycle length) by resistors, so that the main current is established and interrupted in two steps. To effect a weld, the operator changes over switch FS so that the relay-picks up by the charging current of condenser C1 when conductive area 4 engages brush 14 and is subsequently held in by current through resistor R1, conductive area 5 and brush 16, the relay falling out when area 5 leaves brush 16. The welding transformer is energized over relay contacts CR<SP>1</SP> and brushes 17, 18 during the period that the relay is energized. To allow adjustment of the welding period, the main conductive areas 9, 12 may comprise a number of smaller sections, any number of which may be connected in series. Resistor R<SP>2</SP> ensures discharge of condenser C<SP>1</SP> when switch FS is released.
Patent GB-189215-A (GB)
Abstract: 189,215. Goold, L. W., (Kimball, E. B.). Aug. 24, 1921. Lighting burners by electric devices.-An electric igniter 16 for igniting a pilot burner 9 initially heating a vapour generator 1, is arranged with a heating element 22 in an auxiliary circuit 21 extending from the fuel pump motor circuit 19. The circuit is completed when the fuel pump is started by the pressure of the fuel acting through a diaphragm 30 in a chamber 32 on a lever 25 fulcrumed in a casing 27, the lever 25 being moved against the resistance of a spring 34 to cause an adjustable contact 24 on the lever to engage with a stationary contact 23. When the main burner is started, the pressure in the generator 1 is communicated through a pipe 35 to a diaphragm 30 in a chamber 32<1>, and the lever 25 is moved to break the auxiliary circuit 21. The flame from the pilot burner ignites the main burner.
Patent GB-851686-A (GB)
Title: Polyethylene compositions
IPC: C08L23/04
Filed: 1959-06-03
Abstract: A composition comprises a solid polyethylene and a copolymer of ethylene and a C1 to C4 alkyl acrylate, the copolymer being present in from 20 to 80% by weight.  More than one of each polymeric component may be present e.g. low and high density polyethylenes, and conventional plasticizing, stabilizing, lubricating, colouring and anti-oxidant additives may be present. Applications specified are containers, film, conduits, houseware articles, machine guards, records and coatings.
Patent GB-1223256-A (GB)
Title: Improvements relating to electroplating
Inventor: RAMSDEN PETER JOHN
IPC: C25D5/14
Filed: 1967-04-26
Abstract: 1,223,256. Articles with successive different metal electro-deposits. ELECTRO CHEMICAL ENG. CO. Ltd. April 24, 1968 [April 26, 1967], No.19173/67. Heading C7B. A substrate is plated with at least two layers of nickel or nickel alloy, a layer of copper or copper alloy between the uppermost and lowermost of said nickel or nickel alloy layers, and atop the uppermost of these layers either a nickel seal layer i.e. a thin layer of nickel containing finely divided inert insoluble particles of average size not exceeding 5Á obtained by electrodeposition from an acid nickel bath containing the particles in suspension and a bright or semi bright nickel addition agent, followed by a chromium layer, or a microcracked chromium layer i.e. an electro-deposited layer of chromium having 400 to 2000 fine cracks per linear inch produced from a chromic acid bath e.g. as in U.S.A. Specification 3,157,585. The substrate may be of zinc, aluminium, copper, brass or a synthetic resin pre-treated to render it electroconductive plated with a layer of copper or copper alloy or of ferrous metal with or without such a coating. Preferably the copper or copper alloy layers are 0.25 to 10Á thick, the nickel or nickel alloy layers other than the nickel seal layer are of the bright or semi-bright type and are 0À25 to 25Á thick, the nickel seal layer is 0.25 to 5Á thick and the overlying chromium layer is about 0.2 to 0À3Á thick or the microcracked chromium layer is at least 0À75Á thick. Typically all the layers are electro-deposited and where two identical copper or copper alloys are deposited the substrate is passed a second time through the same bath. As described the substrate is electrocleaned and given an acid dip before plating. In examples a steel article is electro-plated to give a Cu/Ni/Cu/Ni/Ni seal/Cr sandwich, the copper bath being of the sodium-based alkaline Rochelle salt cyanide type; and a zinc-base diecasting is similarly treated to give a Cu/Ni/ brass/Ni/Ni seal/Cr sandwich, the brass bath being a sodium-based alkaline cyanide solution. The treated substrate is rinsed between each treatment step except between the nickel and nickel seal deposits.