baber/WOPTO huggingface dataset:
Patent GB-753994-A (GB)
Title: Improvements in and relating to printing apparatus
Inventor: EVANS JEAN-PAUL ROBERT MARIX
IPC: B41L19/00
Filed: 1954-02-19
Abstract: 753,994. Printing-machines. ACCOUNTTOKENS, Ltd. Feb. 1, 1955 [Feb. 19, 1954] No. 5029/54. Class 100 (2). In a printing-machine of the kind comprising a base 1, Fig. 1, to support a relief plate 4, and a printing head 5 mounted for pivotal movement towards the base and carrying a roller 13 adapted to co-operate with the relief plate to print on a sheet overlying the relief plate, the roller is mounted on a carriage 12 (see also Fig. 3) movable transversely across the width of the head 5 under the action of a spring, there being provided means whereby the spring is automatically loaded as the printing head is moved into printing position and means for releasing the carriage when the printing head is in this position. The roller 13 may be inkimpregnated or it may act through an inkribbon. A bell-crank lever 15 pivoted to the upper wall 8 of the head 5 has a forked end for engagement with a pin 16 on the carriage and the other arm 17 is connected to a spring 18. A hooked latch 19, connected to a fixed pivot point 20 spaced from the hinge axis 6 of the head, has a slot for engagement with arm 17 so that as the head is moved downwardly towards the base the latch pulls the lever 15 in a clockwise direction, thereby moving the carriage across the head and loading the spring 18. The latch is urged into engagement with arm 17 by a leaf-spring 21 and may be displaced out of engagement by pressure on a button 25 acting through an arm 26. A latch 23 may be provided to hold the head 5 in the operative position. In operation the sheet to be printed is placed over the relief plate 4 and the head 5 closed down so as to load the spring. The button is then pressed to release the carriage which moves the roller over the paper, inking those parts which are supported by the relief plate. At the end of the primary stroke of roller 13 a projection 27 on the carriage 12 is adapted to strike and release the latch and allow the head to rise under spring action. In a modification mechanism is provided to release the latch 19 automatically as soon as the head has arrived in the operative position. The bellcrank lever mechanism may be replaced by a cable connected at one end to the carriage and at the other to a spring-actuated drum.
Patent GB-505132-A (GB)
Title: Improvements in and relating to electromagnetic induction gauges for measuring the thickness or other characteristic of a metallic material by determining its electric conductance
IPC: G01B7/06
Filed: 1938-02-18
Abstract: 505,132. Electromagnetic gauges. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 18, 1938, No. 5218. Convention date, Feb. 19, 1937. [Class 37] A gauge for measuring the thickness or other characteristic, e.g. purity, of metallic material, by determining its electric conductance, comprises an H-shaped magnetic core 15, Fig. 5, provided with a low frequency exciting winding 30, and U-shaped core elements 19, 20, mounted adjacent thereto to form air-gaps 25, 26. A sheet 29 to be gauged is passed through the gap 26 and a sheet of standard thickness may be located in the gap 25. It is preferred, however, to replace the standard sheet by a compensating winding 41 adjustable by means of a variable impedance 42 to produce the same inductive effect. The cores -19, 20, carry similar detecting coils 33, 34, connected in opposition through a rectifier bridge 36 to a D.C. responsive instrument 37 and a relay 38. The instrument 37 may be calibrated to read thickness directly and the relay 38 may adjust through contacts 39, 40 apparatus for controlling the thickness of the sheet 29. Since the operation of the gauge depends upon the eddy currents set up in the sheet 29, the device may be used for determining the conductivity of sheets or wires known to be of standard thickness or diameter. Fig. 1 shows a constructional form of the apparatus; the cores 16, 19, are secured respectively, to non-magnetic cover plates 27, 45, in a protective tube 43 and the core 20 is enclosed in a tube 44 by cover plates 28, 46, the tubes being secured to a fork frame 11, 12. For testing wires, the wire 52, Fig. 0, is fed continuously through the air gap 26, by passing round pulleys 51, 54, the pulley 54 being conducting to form a closed loop of the wire 52 for circulation of the eddy currents.
Patent GB-275503-A (GB)
Title: Improvements in or relating to rat traps
IPC: A01M23/00
Filed: 1927-02-24
Abstract: 275,503. Kavalsky, A. Feb. 24, 1927. Animal traps.-A network cage 2 is divided by a partition 3 into two chambers. A conical entrance 6 leads into the first chamber 4 whence a conical passage extends to the second chamber 5. The passage 7 is closed at its rear end but is provided with a counterweighted floor 8 through which a trapped animal falls into the chamber 5. A door 10 in the back of the trap permits the removal of the captured animals.
Patent GB-1440176-A (GB)
Title: Process for preparing carboxylic esters
IPC: C07C67/035
Filed: 1975-02-07
Abstract: 1440176 Preparation of carboxylic acid esters MITSUBISHI CHEMICAL INDUSTRIES Ltd 7 Feb 1975 [12 Feb 1974] 5365/75 Heading C2C [Also in Division B1] The invention comprises a process for preparing an ester having a moiety derived from an aliphatic carboxylic acid and a moiety derived from a carbocyclic aromatic compound having a hydroxymethyl group attached to the aromatic nucleus which comprises reacting said aliphatic carboxylic acid (e.g. acetic acid) with a compound having a methyl group attached to an aromatic ring (e.g. toluene or xylene) and molecular oxygen in the presence of a catalyst comprising (i) palladium metal (ii) an antimony component and (iii) one or more carboxylic acid salts of an alkali metal, an alkaline earth metal, zinc, cadmium or lead, supported on a carrier.
Patent GB-449344-A (GB)
Title: Improvements in and relating to ventilators
IPC: F24F13/12
Filed: 1935-02-20
Abstract: 449,344. Ventilators. HUGHES, B. D., and GREENWOOD'S VENTILATING CO., Ltd., 22, Newman Street, Oxford Street, London. Feb. 20, 1935, No. 5492. [Class 137] A ventilating grille comprises a metal plate 1 having rectangular apertures 2 which are screened by air deflecting strips 4 secured at 6, for example by rivets, to the rear face of a plate 8, with corresponding apertures 9, so that a deflecting strip is located immediately behind each pair of apertures. The plate 8 slides in channels 11 on strips 12 secured to the plate 1, and is operated by a knob 14 the shank of which passes through a slot 13 in the plate 1, and is secured to the plate 8. Movement of the plate 8 causes the openings 2 and 9 to register, or alternatively the openings 2 to be covered by the parts of the plate 8 intermediate the apertures 9. In modifications, the strips 4 are attached directly to the plate 1, the " hit-and-miss '' device being dispensed with, or the strips may be formed as a single unit, or made by cutting the plate and bending out the strip portions.
Patent GB-937819-A (GB)
Title: Catamenial appliances
Inventor: OTTO FREDERICK LEWIS
IPC: A61F13/64
Filed: 1961-02-14
Abstract: 937,819. Catamenial appliances. SOUTHALLS (BIRMINGHAM) Ltd. Feb. 5, 1962 [Feb. 14, 1961], No. 5532/61. Class 81 (2). A sanitary towel holder has at each end a slit 11 which extends through the thickness of the holder and an apertured tab 12 disposed on the side of the holder which is outermost in use and inwardly of the adjacent end of the holder, so that each end of a towel 16 disposed on the inner side of the holder may be passed through a slit and retentively engaged by an aperture in a tab. The holder is made of synthetic resin, e.g. polyvinyl chloride, and may comprise two layers secured by seam welding and enclosing padding. The tabs which are also made of a synthetic resin are secured to the holder by nylon tapes 13 which also form loops 14 for securing the holder to a belt. Flaps 17 overlie the tabs.
Patent GB-1398921-A (GB)
Title: Platinum group metal catalysts and heir use
IPC: B01J23/656
Filed: 1972-02-07
Abstract: 1398921 Reforming gasoline BRITISH PETROLEUM CO Ltd 17 Jan 1973 5548/73 Heading C5E [Also in Division B1] Gasoline (desulphurized naphtha) is reformed at 300-600 C., 1-70 bars, 0À1 to 10 vol./vol./ hr. and 0À1 : 1 to 20 : 1 hydrogen/hydrocarbon ratio over a catalyst comprising platinum, uranium and chlorine on silica-free alumina, optionally also containing rhenium.
Patent GB-966399-A (GB)
Title: Improvements in or relating to electromagnetic relays and contact assemblies therefor
Inventor: RATHBONE FREDERICK WILLIAM
IPC: H01H51/28
Filed: 1962-02-14
Abstract: 966,399. Electromagnetic relays. POSTMASTER GENERAL. Feb. 14, 1963 [Feb. 14, 1962], No. 5704/62. Heading H2B. A sealed magnetic change-over contact device comprises a magnetic reed tensioned into engagement with a non-magnetic reed extending from the same end of the tube and a magnetic reed extending from the other end. In Fig. 1, non-magnetic reed 5 carries a cylindrical insulating spacer 6. On energization of a coil 7 reeds 4 and 5 disengage prior to reeds 4 and 2 engaging. In an alternative arrangement the cylindrical spacer is replaced by an insulating member joining reeds 2 and 5 together. In the make-before-break device of Fig. 3 a magnetic reed 14 is tensioned into engagement with a non-magnetic reed 15 carrying an insulating spacer 16 and a magnetic reed 12 and non- magnetic reed 18 having a stepped portion 19 extend from the opposite end of a glass tube. In Fig. 4 magnetic reeds 22, 24 extend from opposite ends of a tube, reed 24 being tensioned into engagement with a non-magnetic reed 26 carrying a spacer 26. A further non-magnetic reed 28 extends beneath magnetic reed 24 such that when the device is energized reeds 22, 24 engage via reed 28. In an alternative arrangement the device is similar to that shown in Fig. 1, but the magnetic reeds do not overlap and the non-magnetic reed carries no insulating spaces. On energization the magnetic reeds tend to align axially allowing the non-magnetic reed to change over. The magnetic reeds are made of nickel iron and non-magnetic reeds of nickel silver. The magnetic and non-magnetic reeds may be pretensioned together by inserting them into a jig and then either sliding a glass tube over them and sealing them to the tube or securing them into a plug which is subsequently sealed into a tube.
Patent GB-122966-A (GB)
Title: Improvements in Gas Governors or Regulators.
Inventor: WEYMAN JAMES EDWARDS
IPC: G05D16/12
Filed: 1918-04-04
Abstract: 122,966. Weyman, J. E. April 4, 1918. Fluid - actuating mechanism. - The actuating bell of a fluid - regulator is fitted with a depending tube so that, as the bell is raised, a column of water is carried up by suction to balance the pressure in the bell and thus cause the movements of the bell to synchronize with the gas pressure. The bell Q, counterbalanced by weights P, works in a water seal M and has fluid under pressure admitted to it by a pipe Z. The depending tube R is shown to be of cylindrical form, but it may taper either upwards or downward or it may be of irregular form. An air cock K is fitted for initially setting the apparatus, and where several tubes arranged concentrically or otherwise are fitted to a single bell one or more of the tubes may be rendered inoperative by leaving the corresponding cock K open.
Patent GB-1244143-A (GB)
Title: Trialkyl-silyloxy-steroids
Inventor: BARNIKOL-OETTLER KURT
IPC: C07J1/00
Filed: 1970-02-06
Abstract: 1,244,143. Trimethylsiloxy steroids. JENAPHARM VEB. 6 Feb., 1970, No. 5755/70. Addition to 1,196,215. Heading C3S. [Also in Division C2] The invention comprises: 17# - trimethylsiloxyestra - 1,3,5(10) - trien - 3 - ol (I); 3 - methoxy - 17# - trimethylsiloxyestra - 1,3,5(10),8,14- pentene (II); 3 - methoxy - 17# - trimethylsiloxy - 8,14 - secoestra - 1,3,5(10),9(11)- tetraen - 14 - one (III); 3 - methoxy - 17#- trimethylsiloxyestra - 1,3,5(10),8(14) - tetraene (IV); dl - 17# - ethynyl - 3,17α - bis(trimethylsiloxy) - 14# - estra - 1,3,5(10),8 - tetraene (V); dl - 17# - ethynyl - 17α - trimethylsiloxy - 14#- estra - 1,3,5(10),8 - tetraen - 3 - ol (VI); 17α- vinyl - 3 - methoxy - 17# - trimethylsiloxyestra - 1,3,5(10) - triene (VII); dl - 17#- ethynyl - 3 - trimethylsiloxy - 14# - estra - 1,3,5- (10),8 - tetraen - 17α - ol (VIII); and 3#,17#- bis(trimethylsiloxy) - B - homo - 5α - androstane (IX). Compound I is prepared by alcoholysis of the corresponding 3,17 - bis(trimethylsiloxy) compound. Compounds II, III, IV, V, VII, VIII and IX are prepared by silylation of the corresponding 3- and/or 17-(free hydroxy) compounds. Compound VI is prepared by alcoholysis of compound V.
Patent GB-939151-A (GB)
Title: Process for the production of concentrated and low-viscosity synthetic rubber dispersions
IPC: C08C1/07
Filed: 1962-02-15
Abstract: A synthetic rubber dispersion of low viscosity and high solids content is obtained by concentrating a conjugated diene polymer or copolymer synthetic rubber dispersion in the presence of 0,01 to 2% of a polyalkylene oxide of molecular weight between 3,000 and 30,000. Preferably the polyalkylene oxide is a polymer of ethylene oxide or of propylene oxide or its a copolymer of ethylene oxide with propylene oxide.  Specified rubbers are the polymers of butadiene, isoprene and chloroprene and their copolymers with styrene, acrylonitrile, acrylamide and vinyl pyridine.  There may also be present electrolytes and organic solvents; specified are the alkali and ammonium salts of carbonic, formic, acetic, sulphonic, nitric, phosphoric and hydrochloric acid, hydrocarbons and chlorhydrocarbons. A condensation product of formaldehyde and naphthalene sulphonic acid may also be present.
Patent GB-680657-A (GB)
Title: Adhesive tapes
IPC: C09J7/29
Filed: 1950-03-07
Abstract: 680,657. Coated sheet materials. JOHNSON & JOHNSON (GT. BRITAIN), Ltd. March 7, 1950. [March 16, 1949] No. 5791/50. Drawings to Specification. Class 140. A normally tacky and pressure sensitive adhesive tape or sheet comprises a backing and a plurality of spaced apart reinforcing strands of high tenacity material bonded between the backing and the adhesive layer. The strands may be wholly or partially embedded in a bonding layer over which the adhesive layer is applied. The bonding layer and the adhesive layer may be of the same material. The backing may be flexible film or metal foil or may be of fibrous woven or non- woven material. The term strand is said to include 'monofilaments', 'polyfilaments' or yarns such as may be made by twisting, braiding or roping filaments or staple fibres or fibres of shorter lengths. The strands may be of one material or of several materials compounded together, and several types of strands may be used in one product. The strands may be precoated to enhance their adhesion to the bonding and/or adhesive layers. The bonding layer may be an elastomeric adhesive activated by heat, pressure or solvent, or may be a plasticised resin. The backing material, strands and bonding and adhesive layers may be made of natural or synthetic materials and numerous examples are given for each. U.S.A. Specifications 2,340,298 and 2,424,996 are referred to.
Patent GB-628015-A (GB)
Title: Improvements in or relating to television modulation systems
IPC: H04N7/084
Filed: 1947-02-28
Abstract: 628,015. Pulse mediation ; multiplex pulse signalling. STANDARD TELEPHONES & CABLES, Ltd. Feb. 28, 1947, No. 5836. Convention date, March 30, 1946. [Class 40 (v)] In a television transmission system sound is conveyed by producing a pair of pulses, variably spaced in accordance with an audio sound signal, which occur during the blanking periods. An oscillator 1, Fig. 1, produces a waveform as shown at 3, Fig. 2, which is fed to a multivibrator 2 producing a wave 5. This output is applied to a horizontal synchronizing pulse shaper 7, producing a series of short pulses 8 and to a horizontal blanking pulse shaper 9, producing a series of pulses 10 which are of appropriate duration for the horizontal blanking periods. The oscillator output is also phase modulated in a phase modulator 11 by a signal source 12 and the phase modulated output 3a, Fig. 2, is rectified in a full wave rectifier 13 producing the output shown at e, Fig. 2. In a pulse shaper and blocked amplifier 15 the cusps of this wave are clipped along a level 16 to derive a series of time modulated pulses 17 and the normally-blocked amplifier section of 15 is excited by pulses 18 from shaper 9 which allow the amplifier to pass only those pulses 19 of the series 17 occuringsimultaneously with the pulses 18. The outputs of the pulse shaper and blocked amplifier 15, the horizontal blanking pulse shaper 9 and the horizontal synchronizing pulse shaper 7 are fed to a mixer 20, the output of which appears as composite pulses 21. This signal is combined with vidio signal 23 before transmission. In a modification (Fig. 4, not shown), the blocked amplifier may be omitted and the selection of pulses 17 effected by dividing the oscillator frequency by four before modulation by means of a frequency divider inserted between oscillator 1 and pulse modulator 11. Specification 596,011 is referred to.
Patent GB-371097-A (GB)
Title: Improved means for cutting and breaking-down coal and the like
IPC: E21C27/12
Filed: 1931-02-25
Abstract: 371,097. Endless chain conveyers. BARKER, E., East Cottage, Benton, and FEATONBY, J., Bernicia, High View, Wallsend, both in Northumberland. Feb. 25, 1931, No. 5873. [Class 78 (i).] A machine for cutting, breaking-down and conveying from the working face, coal or like material comprises an endless conveyor supported in a framework and provided with means for moving the material on to and off the conveyer, cutting tools and breaking-down devices operated from the conveyer and means for feeding the whole towards the working face. A flexible frame-work is formed in suitable lengths connected by knuckle joints, and supports a conveyer chain &c. Z passing at one end over a tumbler V<1> driven by a rope or directly or through gearing from a motor ; the other end of the chain passes over a tumbler V supported by a frame Y adjustable for tensioning purposes. The upper part X of the frame is adjustable by screws H and is braced by pivoted stays G, Fig. 5, fixed in adjusted position by bolts. The chain &c. Z carries arms U with cutters T which simultaneously overcut and undercut the coal. The framework is advanced towards the coal &c. by supporting wheels or by means of screws P1 arranged at intervals and engaging divided nuts Q<1> in split pedestals T<1> normally held by jacks &c. ; each screw is reversibly driven by either of two meshing pinions D\ N<1> in a pivoted frame K<1>, the pinion D<1> being driven by a sprocket Q rotated by projections R on the chain Z. The various frames K<1> are connected by rods Q<2>, Fig. 5, to ensure simultaneous reverse of the drives for the feed screws. Scoops E, F, are attached to the edge of the conveyer chain &c. to lift the coal &c. on to the chain ; a plate N, Fig. 1 supported with vertical play, removes the coal at the end of the framework, a plate M being pressed by a spring Wl into each link of the chain as it approaches the plate N to assist in the removal of the coal. Specification 363,085 is referred to.
Patent GB-810267-A (GB)
Title: Focusing magnet for long electron beams
IPC: C08G81/02
Filed: 1956-02-24
Abstract: 810,267. Magnets. STANDARD TELEPHONES & CABLES Ltd. Feb. 24, 1956 [Feb. 26, 1955], No. 5891/56. Addition to 742,070. Class 35. [Also in Group XL (a)] In a magnetic cell stack according to the parent Specification the plates Bh, Figs. 5, 6, of a high Á and low reluctance bounding individual cells are separated from the magnets by a transverse non-magnetic gap which absorbs most of the transverse magneto-motive force and so eliminates undesired transverse magnetic field components due for example to the use of bar magnets of unequal strength. In a modification there may be a single magnet common to two or more (even all) of the cells; as shown in Fig. 5 pairs of adjacent cells are energized by common permanent magnets. These modifications are achieved by eliminating some or all of the outer plate parts Ba which are not essential parts of the cells. The gaps can be filled with non-magnetic material. The plates Bh are separated by aluminium spacers strung on a non-ferro-magnetic support and their diameter is not greater than the distance between two adjacent magnetic discs. The short magnets shown are bar magnets T, T<SP>1</SP>, Fig. 6, spaced by further bar magnets E magnetized along the tube axis; or axially magnetized ring magnets can be used. The discs Bh can be of rectangular or circular cross-section.
Patent GB-287161-A (GB)
Title: Improvements in remote control arrangements for electric alternating current distribution systems
IPC: H02J13/00
Filed: 1928-02-25
Abstract: 287,161. Lorenz Akt.-Ges., C., (Assignees of Schmidt, K.). March 18, 1927, [Convention date Exciting. - Alternating currents of medium frequency for the distant control of relays &c. are superposed upon a low frequency single or polyphase system by interposing a generator of the required frequency in the exciting circuit of any synchronous machine running on or connected to the system e.g. a generator or phase compensator. Fig. 1 shows a booster with its winding ZM in a low tension line and its exciting circuit, containing a. medium-frequency generator MG. the frequency of which is superposed upon the lowtension line by transformer action in the booster, and thence to the high tension line through the transformer T1. According to the Specification as open to inspection under Sect. 91 (3) (a) the continuous current source B may be dispensed with. This subject-matter does not appear in the Specifica.- tion as accepted.
Patent GB-1038647-A (GB)
Title: Machine for charging scrap to converters or crucibles
IPC: C21C5/46
Filed: 1965-02-11
Abstract: 1,038,647. Charging metallurgical converters. VEREINIGTE OSTERREICHISCHE EISENUND STAHLWERKE A.G. Feb. 11, 1965 [Feb. 13, 1964], No. 6016/65. Heading F4B. A machine for charging a converter 3 with scrap comprises a oar 1 movable on rails 2 at right angles to the tilting plane of the converter and a long bar 6 and a short bar 7 pivoted to the car at 5, 4 respectively and to a support platform 8 for the charging box 10, the whole linkage forming an articulated quadrangle operated by a hydraulic ram pivoted at 11 to the long bar 6, to effect the loading operation. Movement of the linkage causes the charging bore to perform a combined forward and tilting movement to the dumping position shown in dot-dash lines. Two charging boxes 10 are mounted on the car.