baber/WOPTO huggingface dataset:
Patent GB-773958-A (GB)
Title: Rate of change indicator
IPC: G01P3/62
Filed: 1953-06-11
Abstract: 773,958. Electric indicating systems. BENDIX AVIATION CORPORATION. June 11, 1953 [Aug. 15, 1952], No. 16152/53. Class 40 (1). [Also in Groups XXXV and XXXVII] The rate of change of a condition is translated by a signal generator into an alternating signal of magnitude and phase sense corresponding to the magnitude and sense of the rate of change; the signal varies the differential speed of two constantly running motors to correspond therewith, and the rate of change is indicated by means responsive to the differential speed. As shown, for indicating rate of climb of an aircraft, an aneroid capsule 12 actuates the armature 25 of an inductive pick-off 27, the windings 32 of which are energized from an A.C. source S. When the aircraft is flying level, i.e. at constant height, the opposed series connected pick-off output coils 33, 34 give zero output. Any variation in altitude results in an A.C. output signal of magnitude and phase sense corresponding to the rate of change in altitude due to the follow-up movement of the core 28 effected as described below. This output is amplified in stages 40, 41 and applied over a transformer 43, in anti-phase to the grids of triodes 55, 57 forming part of a phase discriminator. The anodes and cathodes of these triodes are separately fed in like phase from the A.C. source S, so that in the absence of any input signal from the pick-off, they conduct equally during the positive half-cycles of the supply, and through respective transformers 67, 68 energize equally the variable phases 75, 81 of induction motors 76, 82 which thus run at normal constant speeds. The motor shafts drive a differential mechanism 88, the output shaft 90 of which remains stationary when both motors run at their normal speeds. Any input signal affects the triodes differentially to increase the speed of one of the motors, the speed of the other motor remaining constant because the diode rectifiers 50, 51 prevent the grids of the triodes going negative. The differential output shaft 90 is thus rotated in one direction or the other according to the sense of the altitude change and drives the E-type core 28 of the pick-off in the follow-up sense until balance is achieved. The shaft 90 is thus rotated according to rate of change of altitude and operates fine and coarse rate-of-climb indicators 121, 130 through spring-controlled eddy current drag type movements 115-116, 127-128 and appropriate gearing. Indicator construction, Fig. 3. The pointers 121, 130 move concentrically over respective dials 137, 138, the fine pointer 121 being locked as it passes upwardly through its maximum reading (plus or minus) behind a radially disposed strip 141. To render the fine dial 137 more accurate for small rates of climb the scale is made non-linear, a known logarithmic linkage being used in the pointer drive for this purpose. Specification 773,959 is referred to.
Patent GB-1149939-A (GB)
Title: Composition of matter and use thereof in joint sealing
IPC: E01D19/06
Filed: 1968-04-04
Abstract: 1,149,939. Block polymers; reclaims rubber compositions. UNIROYAL Inc. 4 April, 1968 [24 April, 1967], No. 16152/68. Headings C3P and C3Q. [Also in Division El] A weather-proof composition suitable for making into a profiled joint sealer comprises reclaimed rubber in admixture either with a block copolymer A-B-A wherein each A is a polymeric block of alkenyl aromatic hydrocarbon of molecular weight 2,500 to 100,000 and B is a polymer block of a conjugated diene of average molecular weight 25,000 to 500,000, or with a hydrogenated derivative thereof, the material being uncured. The reclaim may be of natural rubber, SBR, butyl or neoprene. The composition may also contain bitumen, polyester plasticizer, and tricresyl phosphate.
Patent GB-617915-A (GB)
Title: Improvements in or relating to the recording and reproduction of sound on film
IPC: H04N5/84
Filed: 1946-05-28
Abstract: 617,915. Recording and reproducing sound on films. FARNSWORTH TELEVISION & RADIO CORPORATION. May 28, 1946, No. 16153. Convention date, April 30, 1945. [Class 40 (ii)] [Also in Groups XX and XL (b)] In apparatus for recording and reproducing sound on film in which a film of normal width, i.e. 35 mm., is used, the sound track is recorded by means of a sound-modulated cathode-ray beam which performs a zig-zag trace on a luminescent screen 8, Fig. 1, an image of which is projected by optical means on to a slowly moving film 25, whereby a zig-zag track in the form of a rhomboid, Fig. 2, is obtained. By using a light spot approximately 0.002 inch diameter, 333 line scans per width of film may be made. The return trace between scans is made so short in duration that it is beyond the limit of perception of the human ear. The line-scanning generator 16 and frame-scanning generator 17, which produce saw-tooth waveforms for applying to the deflector plates 14 and 15 respectively, are also connected to the same alternating-current source as that supplied to the motor driving the film 25, so that synchronism is thereby obtained. The transverse trace between frames is obliterated by means of a generator 40 which produces short negative blanking pulses, as indicated at 41, which are applied to the grid of the cathode-ray tube. In reproducing, an image-dissector tube 50, Fig. 3, is used in which an optical image of the film-track is projected on to the photo-sensitive cathode 51. As in recording, the line and frame generators 68 and 69 respectively which control an electron beam are synchronized with the film-drive. Variations in the beam current produced by the optical image are used to develope voltage variations across a resistor 71, which are amplified by the amplifier 72, and reproduced by the loud-speaker 73.
Patent GB-468010-A (GB)
Title: Method of producing glassy shapes
IPC: C04B33/32
Filed: 1936-06-10
Abstract: 468,010. Making glass tiles etc.; enamels and glazes. KORACH, M., and DAL BORGO, A. June 10, 1936, Nos. 16204 and 16205. Convention dates, June 12, 1935 and Aug. 23, 1935. [Class 56] Tiles or like articles having a smooth face of vitreous material and a rough back are produced by applying to a ceramic support a layer of refractory material and placing on this layer the batch to form the article. The whole is then heated to fuse the batch which when removed from the support has some or all of the refractory layer adhering. The refractory material may consist of calcium oxide, quartz, sillimanite &c. and the vitreous material may be glass, glaze or enamel. The layer separating the batch from the support may be in the form of a slip or engobe with or without the loose refractory material. The support may be formed of a fired ceramic mass machined to the required shape. Suitable compositions for the separating layer and the batch are given as well as suitable clays and clay mixtures for the support. For example the batch may comprise PbO, BaO, oxides of Ca or Mg and K or Na, Al2O3' SiO2, SnO2 and B2O3. The separating layer may consist of china clay and fused magnesia. The tile may be reinforced subsequently by a layer of cement at the back. Specification 5772/96, [Class 22], is referred to.
Patent GB-517372-A (GB)
Title: Improvements in airscrews
IPC: B64C11/42
Filed: 1938-05-31
Abstract: 517,372. Variable-pitch propellers. CHARLES, H. N., MILNER, H. L., and FAIRHURST, L. G. May 31, 1938, Nos. 16274 and 22653. [Class 114] In a multi-engined aircraft with each propeller of variable pitch hydraulically adjusted the pressure circuits are all connected together to enable any propeller to be adjusted irrespective of a particular engine being stopped The circuits may be connected to an auxiliary source of pressure. As shown a piston 11 on a shaft 12 rotates with the propeller but does not move longitudinally. A spring pressed cylinder 13 moves on the shaft 12 and transmits movement by rods 17 to the root of the propeller blade 10b. The shaft is bored at 21 and plugged at 29 and a stationary coupling member 24 surrounds it and communicates by pipes 32, 33 with a cylinder 36 in which slides a valve 37 having enlarged parts or lands 38, 39, 40, 41. The valve is operated by a rod centrifugally controlled by the speed of the engine and hand controlled through a pivoted lever 60. A pump 44 supplies oil or other liquid to a pressure port 43 and liquid is drained from ports 46, 47 by a pipe 48 leading to the suction side of the pump. A pipe 102 connects with the pressure side of all the other pumps corresponding to the remaining engines. Should one of the engines be stalled pressure may thereby be applied to alter the pitch of the corresponding propeller even though the particular pump is idle.
Patent GB-798939-A (GB)
Title: Improvements relating to the cooling of dynamo electric machines
IPC: H02K3/22
Filed: 1956-05-25
Abstract: 798,939. Cooling dynamo-electric machines. SOC. GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECANIQUES, ALSTHOM. May 25, 1956 [May 25, 1955], No. 16276/56. Class 35. A machine has axial ducts through the rotor conductors divided into axially displaced sections along the rotor, the sections having independent cooling circuits terminated by radial inlet and outlet ducts connecting the axial ducts with the air gap. In all the forms described, there are axially extending ducts through all the conductors with interconnecting radial ducts to supply fluid from the airgap to all or selected axial ducts. In Fig. 4, fluid reaches the axial duct 3 in the outermost conductor from inlet 23 and flows to outlet 24 while fluid flows similarly through sections of all the other conductors in the slot. The flow of fluid from one inlet could be in two opposite directions in all or some conductors only the fluid from one inlet all flowing the same way applying to the others. There may be a separate radial passage for each conductor level, or each radial passage may feed all axial ducts, i.e. at all levels, or may feed groups only of such ducts. In Fig. 7, the conductors in the upper half of the slot provide two axial ducts 3 in each layer and these are fed in parallel by radial passage 70 from the air gap, the fluid then flowing axially part way along the rotor and returning to the air gap by another radial passage similar to 70. In the lower half of the slot, there is one duct 3 per layer, these ducts being fed in parallel by another radial passage, deeper but otherwise similar to 70, but axially displaced therefrom, but the two ducts 3 per layer could be used for all layers. In all cases the coolant path described relates to part only of the rotor length, similar coolant paths being provided all along the rotor. The end windings are cooled by fluid passing from inlets in the end portions, along axial ducts in the conductors and flowing to the air gap by radial passages just inside the slotted portion of the rotor. Specification 746,168 is referred to.
Patent GB-1359168-A (GB)
Title: Panels incorporating a glass sheet and the manufacture thereof
IPC: C03C21/00
Filed: 1971-05-21
Abstract: 1359168 Glass laminates GLAVERBEL 21 May 1971 16286/71 Heading B5N [Also in Division C1] A panel incorporates a plurality of sheets 5, 6; 11, 12, 13 or 26, 27, 28, at least one of which is of glass or glass-ceramic, secured together, as by a frame and/or a sheet of organic material, and the one sheet of glass or glassceramic is held in the panel in a state of elastic flexure with the side 2 in which compressive stresses exist as a result of the flexure being located internally of the panel. In each embodiment the sides of the one sheet are numbered 1, 2 and of a second main sheet 3, 4. As shown in Figs. 1 and 2, a glass sheet 5 and acrylic sheet 6, initially flat are flexed when mounted in a frame 7 so that side 2 faces inwardly. Alternatively, the sheets may be curved in opposite directions (outwardly) (as sheets 26, 28) and held in a frame so as to be flat. In either case, the sheets may be glued to an intervening sheet polyvinylbutyral. As shown in Figs. 5 and 6, two glass sheets 11, 13 are curved, in the same direction with one 13 (outwardly) at a greater curvature, and are secured by gluing to an intervening polyvinylbutyral sheet 12 so that the final curvature lies between the two. As shown in Figs. 14, 15, sheets 26 and 28 of glass-ceramic curved in opposite directions are secured either side of a sheet 27 of polyvinylchloride and secured in a frame 29 in a flat condition. A number of other constructions are shown, including the securing of further layers of organic material on the outer faces of the main panel. When two sheets of glass or glass-ceramic are used, the second sheet may be thicker than the first sheet. Two glass or glass-ceramic sheets may be secured together also by sheets of a high molecular weight polycarbonate of a bis-phenol using a polyacrylate or polyvinyl chloride adhesive. Preferably the sheets before assembly are given either a thermal or a chemical tempering to produce inherent compressive stresses in the faces of the sheets. Ion exchange is the preferred method and, for sodium including glass, may either be by substitution of K, Rb or Cs ions or by Li ions. In examples, sheets of soda-lime glass were immersed in a bath of KNO 3  + KCl + NaNO 3 ; KNO 3  or LiNO 3  + NaCl, and sheets of glass-ceramic in a bath of KNO 3 . Specification 1,359,170 is referred to.
Patent GB-1339944-A (GB)
Title: Impulse machine for high-speed working of metals
Inventor: KONONENKO V G
IPC: B30B1/00
Filed: 1971-05-21
Abstract: 1339944 Nipping cutters; forging hammers; stamping KHARKOVSKY AVIATSIONNY INSTITUT 21 May 1971 [26 May 1970] 16290/71 Headings B3W B3H and B3Q A machine, particularly for shearing ingots 3, has a casing 7 including a sleeve section 6 within which a plunger 5 carrying a blade 2 is slidable. The casing is rigidly coupled at 11 to the other blade carrier 4. Between the sleeve section 6 and a combustion chamber 8 is a partition 15 with a central opening 9, normally closed by a valve 10. The plunger 5 seats centrally on the partition. In use, hydraulic fluid is fed through non-return valves 14 and inlets 13 to a space 12 below the plunger to fill the clearance 6a and overflow the seeve section 6. A combustible mixture in chamber 8 is ignited, high pressure combustion products opening the valve 10 and raising the blade 2 and lowering the blade 1 to shear the ingot 3 simultaneously from both sides. The fluid in clearance 6a prevents the combustion products from escaping over the sleeve section 6 until the cutting stroke is complete. As the plunger 5, blade carrier 4 and casing 7 return to their original positions shown, the valves 14 are opened to admit fluid again to the space 12, the fluid damping the return stroke of the plunger 5 and, as it is forced out through the clearance 6a, flushing away swarf and solid combustion products. The basic apparatus can be used with forging or stamping tools.
Patent GB-542856-A (GB)
Title: Improvements in or relating to rug-making needles
IPC: F16L33/207
Filed: 1940-11-13
Abstract: 542,856. Rug-making needles. ELGIE, F. Nov. 13, 1940, No. 16430. Drawings to Specification. [Class 112] The handle of a hooked tufting needle is of uniform diameter and furnished with a longitudinal groove, loops are pulled through a ground fabric by the hook and then passed on to the handle. The loops are cut by scissors the points of which are guided by the groove. Detachable, handles of different diameters may be provided and a set of different sized handles may nest one over the other.
Patent GB-1427518-A (GB)
Title: Apparatus for use in constructing buildings
IPC: E04G11/48
Filed: 1972-04-10
Abstract: 1427518 Formwork props ACROW (ENGS) Ltd 20 Feb 1973 [10 April 1972 20 July 1972] 16480/72 and 34064/72 Heading E1S A prop head for supporting ceiling, floor or like shuttering on a prop comprises a stem which carries a top transverse support plate 24 at one end and is screw-threaded along at least part of its length at 22 and is mounted in use on the upper end of a prop 4, and intermediate and lower transverse support plates 54 and 28 which are slidably mounted on the stem and are adjustably positionable thereon by a nut 34 engaged with the screwthread 22. The plates 28 of an array of props in use carry cross-beams 36 which in turn carry shutters 40, and further narrower shutters 56 are carried by the plates 54, whereby when the cast concrete has partially set, the nuts 34 may be screwed downwardly thus lowering the plates 28 and 54 and the beams 36 and shutters 40 and 56, which may be removed and re-used, leaving the ceiling or the like supported by the props through the plates 24 until fully set. The plates 28, 54 are fixedly connected by a sleeve 30 slidable on the stem, and their uppermost position is determined by a stop collar 52 on the stem. The heights of the support plates and beams such that the shuttering members, when raised, are flush with the top plates 24. The stem may have a flange 48 at its lower end for bolting to a flange 46 on the prop 4, or may be slidably received in the prop and supported by a further nut on the screwthread 22.
Patent GB-832002-A (GB)
Title: Improvements in the manufacture of mercaptans
Inventor: BENZIE ROBERT JOHN
Filed: 1957-05-24
Abstract: Aliphatic or cycloaliphatic mercaptans are prepared by reacting aliphatic or cycloaliphatic olefines with hydrogen sulphide in the presence of a catalyst comprising a complex derivative of boron-trifluoride with a saturated aliphatic or cycloaliphatic carboxylic acid.  The catalyst is generally prepared by mixing equimolar amounts of the two components but, if desired, an excess of the acid may be used.  The preferred acids contain up to 9 carbon atoms, such as formic, acetic, propionic, butyric and hexahydrobenzoic acids.  The catalyst may be used in amounts of from 1-30% by weight of the olefine.  Reaction is suitably effected at or slightly below atmospheric temperature and, if desired, under elevated pressure.  The reagents are preferably anhydrous.  The process may be effected continuously.  In an example di- or tri-isobutene or propylene tetramer is reacted with H2S at 0-5 DEG C., using an acetic acid-BF3 complex as catalyst.  Other specified olefines are ethylene, propylene, isobutene, cyclohexene and octenes, and dodecenes generally.
Patent GB-185536-A (GB)
Title: Improved construction of oil burner
IPC: F23D11/10
Filed: 1921-06-16
Abstract: 185,536. Chisholm, A. H. June 16. 1921. Air and steam pressure sprayers.-In a liquidfuel burner, a nipple B delivers steam or air into the bulbous end C of a pipe D to atomize oil supplied through a pipe F at an angle to the steam or air current. The atomized mixture issues into the furnace through a nozzle G. A tube H surrounding the pipe D is provided with branched air inlets I, through one of which hot furnace gases may be drawn. The bulbous end C may have perforations E to allow air and furnace gases to be drawn into the pipe D. The pipe D and tube H may have extension tubes L, M, the tube M screwing into the furnace plate or door N. The pipe D is supported centrally in the tube H by the nipple B at one end and by setscrews R at the other.
Patent GB-819816-A (GB)
Title: Improvements in and relating to apparatus for operating on brush stocks
IPC: A46D3/08
Filed: 1956-05-29
Abstract: 819,816. Brush-stock drilling-machines. EVANS & SON (PORTSMOUTH) Ltd., and MORRISON, D. H. May 29, 1957 [May 29, 1956], No. 16643/56. Class 83 (3). [Also in Group XXIII] In a brush-drilling-machine, or filling and drilling-machine, stocks are delivered automatically from a vertical stack 24 to the top recess A1, Fig. 4, of a turret work-holder 1. Each recess contains adjustable but fixed workjaws 4, Fig. 1, and movable jaws 7, moved to closing position by springs. After loading, the turret is indexed by a pawl 12, Fig. 5, and locking bolt 21, both actuated by fluid cylinders 16, 18. After each indexing action, a dog 8 is operated by a cam-controlled Bowden wire 9 to open the jaws 7 at stations A1, A5, allowing a new stock to be inserted at A1 and a finished stock to drop out from A5, and while this is taking place, with the turret stationary, stocks are being operated upon at stations A2, A3, &c.
Patent GB-1374832-A (GB)
Title: Sintered zirconia bodies
IPC: C04B35/486
Filed: 1972-04-11
Abstract: 1374832 Sintered zirconia MAGNESIUM ELEKTRON Ltd 11 April 1973 [11 April 1972] 16651/72 Heading C1A A sintered zirconia body is made by sintering a compacted composition consisting of from 10 to 100% by wt. of baddelxyite the remainder being pure zirconia, at least 10% of the composition having an average grain size not greater than 5 microns. The composition, which preferably has an average grain size of less than 2 microns is preferably sintered for from 2 to 3 hours at a temperature from 1550‹ to 1650‹ C. and may also contain up to 2 mole per cent of yttria or up to 15 mole per cent of calcia or magnesia.
Patent GB-501631-A (GB)
Title: Improvements in indexing devices for chucks and other work holders
IPC: B23Q16/04
Filed: 1938-06-03
Abstract: 501,631. Indexing. DEHN, F. B. (Hartford Special Machinery Co:) June 3, 1938, No. 16720. [Class 83 (iii)] A work holder 31 is secured to a member 27 for rotation in abase 11 located in a machine by keys 18. An indexing disc 45, with evenly spaced peripheral slots, is secured to the member 27 by studs 44 and is locked by a slide 50 mounted in the base and engaging the slots A masking disc 73 with peripheral slots arranged for a particular sequence of operations is secured to the disc 45 by a pin 74 and cover plate 80 with slots of both discs in register. The slide 50 co-operates with both discs and locks the work holder' when the slots of disc 45 are unmasked by the slots of disc 73. The work holder is locked by a two-part brake 91.