baber/WOPTO huggingface dataset:
Patent GB-213578-A (GB)
Title: Self-indicating targets
IPC: F41J5/20
Filed: 1924-03-25
Abstract: 213,578. Vangen, A. March 26, 1923, [Convention date]. Targets.-Sectional targets with automatic indicating mechanism consist of target sections 1 each movable freely about their centres and connected to sliding rods 2, the rods 2 of each section being connected at their rear ends to spiders 3, the centres of which transmit their movement to the signals. The centres of the spiders contact with arms 5 of cranked levers 4, the other arms 7 of which engage the ends of levers 8, which together with parallel levers 12 form sets of parallel motions for supporting the indicators 10 which are counterbalanced by weights 11 free to swing. The position indicators 14 are also actuated by cranked levers 16 through cam-plates 18 which are adapted to be actuated by the motion of any of the sliding rods situated in the corresponding sectors of all the target sections.
Patent GB-769700-A (GB)
Title: Production of synthetic linear condensation polyesters
IPC: C08G63/82
Filed: 1954-03-16
Abstract: A fibre-forming or rubbery linear polyester is made by heating a dicarboxylic acid with ethylene carbonate, 1:2-propylene carbonate, 1:2-butylene carbonate or ethylene sulphite.  Part of the carbonate or sulphite may be replaced by a polymethylene glycol containing 2-10 carbon atoms.  Reaction i preferably effected in presence of a catalyst, e g. p-toluene sulphonic acid, camphor sulphonic acid or zinc propionate.  Specified acids are those of formula HOOC-(CH2)n-1-COOH where n=1-21, alkyl-substituted derivatives of these acids wherein the alkyl groups contain up to 8 carbon atoms, and o-phthalic, isophthalic, terephthalic, homophthalic, 4.41-diphenyl dicarboxylic, p.p.1-dicarboxydiphenylsulphone, naphthalene-1:5-dicarboxylic and p-carboxyphenoxyacetic acids. When using aromatic acids, the components are normally employed in the ratio 1-4 mols. of aromatic dibasic acid to 6 mols. of alkylene carbonate or sulphite or a mixture of 0.1-5.9 mols. of glycol with 5.9-0.1 mols. of alkylene carbonate or sulphite. When using aliphatic acids, fibre-forming polyesters are made by using a molar ratio of 1 mol. of aliphatic dibasic acid to 1-1.9 mols. of alkylene carbonate or sulphite, higher amounts of carbonate or sulphite result in the formation of rubbery products. In examples polyesters are made from (1)-(3) ethylene carbonate and adipic, sebacic or azelaic acid; (4) ethylene carbonate and 4.41-diphenyldicarboxylic acid; (5) ethylene sulphite and terephthalic acid; (6)-(8) and (11) ethylene carbonate and terephthalic acid; (9) and (10) ethylene carbonate, ethylene glycol and terephthalic acid; (12) ethylene carbonate and iso-phthalic acid; (13) propylene carbonate and terephthalic acid. Reference has been directed by the Comptroller to Specification 707,913.
Patent GB-920820-A (GB)
Title: Improvements in or relating to a swing half-axle suspension system for vehicles
IPC: B60G21/05
Filed: 1961-03-02
Abstract: 920,820. Motor vehicle axle structures. H. L. BROWNBACK. March 2, 1961 [March 11, 1960], No. 7643/61. Class 79(4) [Also in Group XXXII] A device which effectively reduces the roll resistance of a swing axle suspension (see Group XXXII) comprises a rod 27 supported at its ends through elastic elements by brackets 12, 13 fast with the swing axles 4, 5. The device is arranged so that the elastic elements, which may be rubber blocks 25 or helical springs, are just unstressed when the vehicle is unladen and the rod is tangential to circles centred at the pivot points 8, 9 of the swing axles and passing through the centres of the holes 18 (Fig. 2), in the brackets 12, 13 through which the rod passes and of the collars 14, 15 by which the brackets are mounted on the swing axles.
Patent GB-987735-A (GB)
Title: Aircraft weight system
IPC: G01L1/12
Filed: 1963-02-26
Abstract: 987,735. Measuring weight electrically. CLEVELAND PNEUMATIC INDUSTRIES Inc. Feb. 26, 1963 [June 8, 1962], No. 7668/63. Heading G1N. The weight of an aircraft is determined by magnetostrictive transducers in the wheels, the readings being offset to provide pay-load weight, and combined to give total weight and centre of gravity information. As shown (Figs. 1, 2), each landing wheel strut 11 is formed into two arms 10 carrying a hollow hinge pin 8 incorporating weight transducers 13a, 13b, a similar transducer being incorporated in the nose wheel assembly 3. Each transducer comprises a laminated core 30 (Fig. 7) with four symmetrically located holes 37 through which are wound coils 38, 39 with perpendicular axes. The core is supported in a non-magnetic sleeve 41 by a potting compound 42. Each transducer unit is mounted inside the hollow hinge pin 8 by a horseshoe-shaped mount having spring arms 24 (Fig. 4) and a central opening 29 carrying the transducer unit 31 by arms 32 and an expansion device 34, 35. The position of the weight transmitted via the strut and hinge pin to the transducer stresses the core 36, and varies the coupling between the windings 38, 39. The core 36 is prestressed by an eccentric adjusting screw 28 and the expansion device 34, 35, to allow for the aircraft tare weight, so that when the windings 38 are energized with A.C. the outputs from the windings 39 represent the additional pay-load. These output signals are rectified and added (Fig. 8, not shown) to give the total pay-load of the aircraft. The displacement of the centre of gravity from the main aerodynamic chord represented by the landing wheel axis is determined by the ratio of the weight measured at the nose wheel 3 to the total weight.
Patent GB-699078-A (GB)
Title: New or improved mechanism for use in emptying liquid containing vessels
IPC: B65G65/23
Filed: 1950-03-28
Abstract: 699,078. Tipping milk churns and the like; endless conveyers and elevators. BOOTH, S. R. June 4, 1951. [March 28, 1950] No. 7687/50. Addition to 652,829. Classes 78 (i) and 78 (iv). [Also in Group XVII] The Specification describes modifications to the tipping elevator, the feed conveyer, the tipping cradle which feeds the drainage conveyer, the drainage conveyer and the receiving tank of the parent Specification. Tipping elevator. At the upper end of the elevator are disposed two pairs 66 and 70 (Fig. 4) of guide rollers about which the cans tip and over which they pass to the tipping cradle. The rollers are preferably surfaced with rubber. Where the height of the rollers is less than that of a can the guide 69 may be omitted. The cans are carried on the elevator with their axes slightly tilted as shown. Feed conveyer. A pair of inclined guides 63 lifts the cans from the feed conveyer as they approach the elevator. Tipping cradle. Feeding the drainage conveyer. The modified tipping cradle comprises a pair of bars 72 (Fig. 4) which support the can and are formed with forked ends 73, cranked inwardly in plan view and carried by trunnions 74 on shaft 90 in a readily removable manner. A removable cross-bar 76 joining the arms 72 is connected at each end to a cranked lever 78 carrying a balance weight 80 and oscillated about the shaft 90 by rod 81 from a lever 82 fast on a shaft 83 which is oscillated in synchronism with the movement of the elevator by a crank which carries a roller 86 engaged by a cam 87. As in the parent Specification the can slides down the cradle to the position shown at 14 in Fig. 4 in which it abuts against the side of the draining rack 91 and is then inverted and lifted onto the rack by the tipping motion of the cradle. To restrain the latter movement the lever 78 is arranged, towards the end of its movement, to strike a lever 94 pivoted on the frame of the machine and biassed by a spring 95. Drainage conveyer. In the drainage conveyer shown in Fig. 4 pawls 93 carried on a reciprocating member 92 are adapted to engage inside the neck of the cans to drive them along the rack 91 on the forward stroke and are arranged to retract and pass beneath the cans on the rearward stroke. In the alternative construction shown in Fig. 3 the cans are driven along the rack 91 by pushers 97 carried on an endless chain 96 ; in order to reduce the space occupied by the return run the sprockets carrying the chain are inclined at 45 degrees to the horizontal and the pushers 97 are arranged to be horizontal on the working run and vertical on the return run. Receiving tank. The shape of the receiving tank 75 is modified as shown. This tank is readily removable to enable the main tank 100 below to be cleaned.
Patent GB-887563-A (GB)
Title: Assemblies for semi-conductor devices
IPC: H01L23/473
Filed: 1957-03-08
Abstract: 887,563. Rectifier assemblies. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd., and STEVENS, S. A. March 7, 1958 [March 8, 1957], No. 7739/57. Class 37. A rectifier assembly comprises a plurality of semiconductor rectifiers, the base-plate of each being in contact with a bus-bar, the opposite face of which lies adjacent but insulated from a cooling unit having conduits for fluid. Fig. 2. shows the semi-conductor units 1 with baseplates 10 in contact with bus-bar 4. An insulating layer 8 separates bar 4 from cooling unit 5 with U-tube shaped flattend conduits 12 fixed between copper laminµ 11, and a second insulating layer separates the unit from a second bus-bar 7. Bus-bars 4 and 7 are held together by insulating clamps 14. The other terminals of the rectifier elements are connected to a third bus-bar 6 via fuse links 16. Alternatively, cooling fins may be provided on the opposite side of the cooling unit. Fig. 5 shows an arrangement in which the second bus-bar is divided, each of the halves 7a and 7b being connected to the other terminals of the rectifier elements via fuse links 116. The arrangement may be adapted for use with three or six-phase supply.
Patent GB-298461-A (GB)
IPC: B01J19/00
Filed: 1928-03-13
Abstract: 298,461. Siemens & Halske Akt.-Ges. Oct. 8, 1927, [Convention date]. Oxidizing; effecting chemical reactions by immersion of solids in liquids.-The oxidation and reduction of liquids Intended for use as electrolytes are effected by the introduction into the liquid of a reactive substance in powder form enclosed in a perforated container. A perforated box 1 of sheet iron, lined with a fine meshed network 2 and having a cover secured by locking devices 4 may be used to contain the material. The box must be made heavy in order that gases generated by the reaction may not lift it above the surface of the liquid. Examples of the employment of the method are the oxidation of sodium stannite to stannate prior to electrolysis, sodium peroxide being the reagent enclosed in the box, and the oxidation of zinc lyes in preparation for subsequent electrolysis.
Patent GB-899895-A (GB)
Title: Improvements in or relating to pyrometers
IPC: G01K17/00
Filed: 1960-03-04
Abstract: 899,895. Radiation pyrometers. FOSTER INSTRUMENT CO. Ltd., and OUGHTON, H. G. March 6, 1961 [March 4, 1960], No. 7745/60. Class 40(3). In a radiation pyrometer thermal energy from a source is concentrated (by means such as a lens 3) on the first junction 5 of a thermocouple and the temperature of the second junction 6 is at the ambient temperature within the pyrometer, means being provided to adjust this ambient temperature to that of the first junction, the ambient temperature being measured (by means such as a second thermocouple 16 and an indicator or recorder 17) as an indication of the source temperature. The pyrometer may comprise a tube 2 in which a coil 13 for cooling water and an electric heating winding are interleaved and encompass the chamber containing the "hot" junction 5 and the "cold" junction 6. The e.m.f. between these two is sensed by a null detector and used to control a switch 12 which either opens a valve 14 to admit coolant to the coil 13 or passes current to the heating winding.
Patent GB-1302068-A (GB)
IPC: G01N21/41
Filed: 1970-02-18
Abstract: 1302068 Measuring refractive index photoelectrically AGA AB 18 Feb 1970 [28 March 1969] 7745/70 Heading G1A In a device for measuring refractive index along a predetermined path a light beam having a first component # 1  and a second component # 2  is modulated, e.g. by a Kerr or Pockels cell M1, before transmission along the path and after transmission is again modulated by a similar modulator M2, after which the beam is divided into its two components which are received by photo-detectors R1, R2, the output from each detector being supplied to a phase responsive device N. By adjusting the path length of one of the components # 2  in the delay device DP the components are arranged to leave the instrument in phase. After being received back at the device after reflection from a mirror a known distance away, the two components will be out of phase, as indicated by the null meter N. The amount of adjustment of the delay device DP required to give a zero reading on the meter N is indicative of the average refractive index along the path. Dichroic mirrors D1, D2 are provided for beam splitting and combining, and a polariser PO and analysers AN1 and AN2 are also placed in the beam path. After splitting by the prism PR the beams are further refined by filters F1, F2. Modulators M1, M2 introduce a modulation frequencies f 1 , f 2  respectively. The detectors R1 and R2 are photo-tubes, whose non-linearity means that each detector output contains a component of frequency f 1 -f 2 , and the phase sensitive instrument N responds to this signal.
Patent GB-1171261-A (GB)
Title: Improved Ultra-Sonic Delay Line
Inventor: GIBSON RODNEY WILLIAM
IPC: H03H9/36
Filed: 1968-02-16
Abstract: 1,171,261. Ultrasonic delay lines. MULLARD Ltd. 24 Oct., 1968 [16 Feb., 1968], No. 7759/68. Heading H3U. A solid body forming a multi path acoustic delay line is characterized by at least one internal reflecting surface for the acoustic wave formed by the wall of a slit extending inwards from an edge face of the body. In the embodiment of Fig. 2, there are two slits 2, 4 in the solid body 1, the input and output piezo-electric transducers being denoted by A and B, the wave path between the transducers being denoted by the broken lines. The number of reflecting legs between the two side walls of slit 2 or 4 is an odd number whereby the accuracy of angles 5 and 6 is not critical due to the cancelling-out effect. In other embodiments (Figs. 1, 3 and 5, not shown) there is a single reflecting slit. In another embodiment (Fig. 4, not shown) there are four slits and only one side wall of each slit serves as a reflecting surface.
Patent GB-758956-A (GB)
Title: A continuous process for the production of sulphur, or sulphur and sulphur dioxide, from pyrites ores
IPC: C01B17/06
Filed: 1954-03-17
Abstract: <PICT:0758956/III/1> A continuous process for roasting pyrites ores wherein the sulphur dioxide gases from the roasting stage pass through a solid reducing agent to reduce some or all of the sulphur dioxide contained therein to sulphur, the resulting reduced gases being contacted with fresh pyrites ore to distill the labile sulphur therefrom, the ore being then passed to the roasting stage, all said stages being accomplished in a single vessel in which the gas-solid contacts are effected by the fluidization technique. Ore is fed from 5 to the upper distillation bed 2 of vessel 1 and the resulting Fe7S8 passes through 10 to roasting bed 4.  Air or oxygen-enriched air enters bed 4 at 15 to provide a stoichiometric excess of oxygen for roasting at above 1000 DEG C.  The sulphur dioxide gases pass from bed 4 through bed 3 at 800-1000 DEG C., fed with carbonaceous reducing agent from 6, to reduce some or all the sulphur dioxide to sulphur.  The reduced gases pass through the distillation bed 2 at 700-800 DEG C. to distil off labile sulphur from the ore.  The gases leave at 16 and sulphur is condensed in cooling device 17.  A portion of the sulphur dioxide gases formed may be recycled through 20 to the roasting bed for temperature control and ore may also be fed direct to bed 4 from 5.  Specification 463,439 is referred to.
Patent GB-1537285-A (GB)
Title: Fractionation of air by adsorption
IPC: B01D53/04
Filed: 1976-02-27
Abstract: 1537285 Fractionation of air by adsorption AIR PRODUCTS & CHEMICALS INC 27 Feb 1976 [4 June 1975] 07823/76 Heading B1C Nitrogen-rich and oxygen-rich gases are produced from ambient air containing water vapour and carbon dioxide by an adsorptiondesorption process wherein (1) the air is passed sequentially through a bed of absorbent for H 2 O, CO 2  removal and a bed of absorbent selective for N 2  retention as opposed to O 2  retention, the unadsorbed gas which is the oxygen-rich product being collected in an expandable receiver; (2) after discontinuation of air inflow, the two beds are firstly rinsed with nitrogen-rich gas obtained as product in an earlier cycle to remove void air but without breakthrough of adsorbed water, the rinse gas product being collected in a separate container. Then, the pressure is reduced at the inlet end of the first bed to desorb gases from the two beds, the desorbed gas which is the nitrogen-rich product being collected in a second expandable container. After a period the first bed is isolated and desorption of that bed is continued at a lower pressure, whilst the second bed is brought back up to working pressure by admission thereto of some of the oxygen-rich product. Finally, communication between the two beds is restored to allow the oxygen-rich gas to repressurise the first bed. The cyclic operation is suitably effected using two parallel series of such beds, one series undergoing the repressurisation, air adsorption and rinsing steps whilst the other series is being evacuated. The first bed adsorbent may be silica gel, alumina, activated carbon or a zeolite, e.g. mordenite or zeolites SA or 13X. The second bed adsorbent may be a zeolite, e.g. calcium zeolite SA or a synthetic mordenite of pore size 5-10A‹.
Patent GB-698859-A (GB)
Title: Improvements in or relating to straw-cutters
IPC: A01F29/09
Filed: 1952-03-27
Abstract: 698,859. Straw cutters. CLAAS, T. March 27. 1952 [July 4, 1951], No. 7852/52. Class 5(i) Straw which is fed in at varying angles between rollers 6 and 7 is cut between the saw teeth of a fixed bar 5 and bent over teeth 3 on rotated discs 4, the teeth 3 being bent over, alternatively to right and left of each disc. The discs are star shaped with bent over projections 4 to which the teeth 3 are replaceably attached. Straw from a straw press may be fed directly to the cooperating blades.
Patent GB-526283-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B15/88
Filed: 1939-03-11
Abstract: 526,283. Knitting-machines. STIBBE & CO., Ltd., G., STIBBE, E. V., and BARSBY, E. S. March 11, 1939, No. 7929. [Class 74 (ii)] In the production of strings of ribbed or partly ribbed articles with pouches, where difficulty is found in providing an equal pull of the take-up all round, a presser foot 1 or like fabric engaging member, mounted for radial movement inside the needle cylinder, is used. The invention is described as applied to machines of the double axially opposed needle cylinder type. The foot 1 is housed in a diametral groove 6 of a block 3 mounted in the lower cylinder on the end of a rod 7. The foot 1 is moved outwards by a spring 9 and inwards by a push rod 11 the end of which is bevelled and engages an incline 2a on the foot. The rod 7 passes through and rotates with the rib cylinder 13 and can slide in a verge sleeve 14 and coaxial sleeve 15 to the lower end of which is attached by grub screw 18, a verge holder 16. The sleeve 14 is mounted within a bush 19 which forms the axle for the gear 20 by which the cylinder 13 is driven. The bush 19 is screwed at 20a and supported by a knurled nut 21 resting on a cover plate 22. At:its lower end the sleeve 14 rests on a cap 23 supported by sleeve 15. A spring 25 interposed between cap 23 and an abutment plate 26 controls the movement of parts 15, 16. Limited downward movement of the parts 15, 16 against the spring action is obtained by pressing on the upper end of sleeve 14. A relatively stationary element 27, engaged by an operating lever (not shown) transmits pressure to sleeve 14. The presser foot 1 when out of action rests in position a'. After a pouch has been knitted the foot is released, by pattern mechanism, to engage the pouch and the rod 7 is gradually pressed downwards, by spring action, to maintain tension on the fabric between the pouch and the needles. After a sufficient number of courses have been knitted, the rods 7, 11 are freed, so that the foot 1 is first disengaged from the fabric and then raised to normal inoperative position.
Patent GB-1410713-A (GB)
Title: Footwear in particular a boot and method for the manufacture  thereof
IPC: A43B3/02
Filed: 1973-02-17
Abstract: 1410713 Boots etc RUBBERFABRIEK VREDESTEIN NV 17 Feb 1973 7932/73 Heading A3B [Also in Division B5] An article of footwear, e.g. a boot, comprises an inner layer 3 of synthetic plastics material or rubber, an intermediate layer 4 of textile material and an outer layer 5 of polyurethane foam. The boot is made by assembling a stocking from material cut from sheets of plastics coated textile material, placing the stocking on a last 1 with the plastics layer 3 against the last, placing the last 1 and stocking 3, 4 in a mould 6 and introducing a polyurethane foam forming mixture into the mould. The pressure generated during the foaming of the polyurethane causes it to penetrate the fabric layer 4 and to bond itself to the plastics layer 3. The plastics layer 3 may be polyvinyl chloride or polyurethane and its inner surface may have a leathery appearance, may be flock coated or may be roughened.
Patent GB-478294-A (GB)
Title: Improvements in washing devices
IPC: A47L13/18
Filed: 1937-03-18
Abstract: 478,294. Reservoir pads. JOHNSON, A. A. March 18, 1937, No. 7984. [Class 19] A car-washing device comprising a flexible cellular pad 7, a band-receiving element 9 and a hose 11, is characterized in that the hose extends directly into the pad and terminates therein. The pad consists preferably of sponge rubber with a backing 8 to prevent escape of water therethrough. Upon the backing 8 is the glove member 9 with at least two finger pockets 10. The glove member has an integral flange 9a extending over the backing. Between the pockets 10 is a hose 11 terminating in a cavity 12 extending through the backing into the pad 7. In a, modification, a strap is substituted for the glove member. In another modification, the hand receiving member is not subdivided, and the hose is introduced into the side of the pad.