baber/WOPTO huggingface dataset:
Patent GB-1087379-A (GB)
Title: Improved peripheral skirt for air cushion vehicles
IPC: B60V1/16
Filed: 1966-04-21
Abstract: 1,087,379. Air cushion vehicles. D. M. DEVENISH. April 21, 1966 [April 22, 1965], No. 17406/66. Heading B7K. A flexible skirt for an air cushion vehicle has an upper portion 11 attached at its upper edge A to the periphery of the vehicle 12, and a lower portion arranged to move upwardly and downwardly as the clearance under the skirt decreases and increases respectively. In one embodiment the lower portion has a series of downwardly opening pockets 13 defined by outer and inner walls 14, 15 of the skirt, and outwardly extending partitions 16. As the clearance C increases, the pressure in the adjacent pockets increases and causes the skirt to rise. The outer wall is fluted and the pockets may be of semicircular section, or alternatively the pockets may be triangular in section or the walls may be joined by straps to prevent undue bulging. Part of the open ends of the pockets may be covered to prevent snagging on obstacles. In another embodiment (Figs. 3 and 4, not shown). The lower edge of the lower portion is attached to a closure member (21) extending almost to the vehicle periphery, leaving a gap (22) for the cushion airflow (or alternatively apertures could be provided in the closure member). The closure member and the upper edge of the upper portion (20) are attached to reels (23, 24) to enable different parts of the skirt to be selectively raised and lowered for control purposes.
Patent GB-624322-A (GB)
Title: Improvements relating to electrical supply installations, particularly for the lighting of railway vehicles
IPC: B60R16/02
Filed: 1947-07-02
Abstract: 624,322. Self-contained supply systems. STONE & CO., Ltd., J., and NIXON, L. R. July 2, 1947, No. 17412. [Class 38 (iv)] Variable-speed generators, with.-A variablespeed motor-alternator has the output voltage controlled in dependency on its frequency, the motor being unregulated. The system is particularly applicable for fluorescent lighting of railway vehicles and may furnish substantially constant current to the lamps. The motor may be supplied from a generator-battery train equipment or from a D.C. traction supply. The Figure shows a carbon pile regulator 9 in the field circuit of the alternator 7 with a control winding 10 fed from the lamp circuit through a choke 12 and variable resistance 13. Preferably, the reactance and resistance of the control circuit correspond to those of the lamp circuit, whereby the alternator voltage may vary with the .75 power of the frequency. Specification 533,716 is referred to.
Patent GB-1397244-A (GB)
Title: Hose swaging machines
IPC: B21J7/14
Filed: 1971-05-27
Abstract: 1397244 Jointing by stamping EUROPOWER HYDRAULICS Ltd 30 May 1972 [27 May 1971] 17430/71 Heading B3Q An end plate 1 for a hose swaging machine comprises a lip 13 for preventing escape of the dies 4 when the bevel-closing ring (not shown) is removed, at least one spring-loaded bolt 7 being provided for attaching the plate to the end of the swaging head so that the dies may be released by displacing the plate 1 against the clamping pressure of the spring 11. The plate 1 may be in two sections particularly if the swaging head is divided for easy removal of work.
Patent GB-713508-A (GB)
Title: Improvements in preparation of polychlorophenoxyacetic acids
IPC: C07C59/68
Filed: 1952-07-11
Abstract: Polychlorophenoxyacetic acids are made by mixing a polychlorophenol with monochloroacetic acid, adding an aqueous alkali metal hydroxide solution to the mixture while agitating and keeping the temperature of the mixture from rising above 60 DEG  C., heating the resulting mixture and recovering the polychlorophenoxyacetic acid from the reaction mixture.  The products are stated to be plant growth regulators.  An organic carrier liquid may be used as a solvent for the polychlorophenol and the monochloroacetic acid or water may be added to the mixture to provide the necessary fluidity.  Preferably a substantial molar excess of the polychlorophenol is used and the amount of alkali metal hydroxide used should preferably be enough to neutralize all acidic materials present.  Suitable carrier liquids are hydrocarbons and halogenated hydrocarbons.  In the examples: (a) monochloroacetic acid and 2,4-dichlorophenol are mixed with a carrier liquid, the mixture is cooled to 15 DEG  C. and caustic soda solution is added while the temperature is maintained between 15 DEG  and 20 DEG  C.; the mixture is heated and sulphuric acid added; 2,4-dichlorophenoxyacetic acid crystallizes out; (b) 2,4-dichlorophenol and monochloroacetic acid are mixed and cooled to 30 DEG  C.; sodium hydroxide dissolved in a larger amount of water than in (a) is added; the mixture is heated, an organic solvent and hydrochloric acid are added and 2,4-dichlorophenoxyacetic acid crystallizes out; (c) the process of (a) is repeated using 2,4,5-trichlorophenol instead of 2,4-dichlorophenol; 2,4,5-trichlorophenoxy acetic acid is obtained.
Patent GB-1492830-A (GB)
Title: Production of doped zones of one conductivity type in semiconductor bodies
IPC: H01L27/00
Filed: 1975-04-28
Abstract: 1492830 Semiconductor devices SIEMENS AG 28 April 1975 [21 June 1974] 17502/75 Heading H1K A doped region 15 of a semiconductor body is formed by depositing undoped polycrystalline semiconductor materials 9 at least in a window in a masking layer 8 at the intended location of the region 15 and then diffusing a dopant into the region 15 through the polycrystalline layer 9 from the vapour phase. The presence of the initially undoped polycrystalline layer 9 serves to reduce the "emitter-dip-effect" caused by crystalline fault formative associated with the dopant introduction. Manufacture of the Si transistor illustrated is conventional except for the use of the polycrystalline layer 9, which is locally retained in the finished device to form part of an electrode structure.
Patent GB-1034899-A (GB)
Title: Bicycle propulsion means
IPC: B62M1/24
Filed: 1964-04-28
Abstract: 1,034,899. Cycle driving mechanism; trouser guards on cycles. F. A. PONTIN. April 28, 1964, No. 17526/64. Headings B7E and B7J. A chain wheel pedal crank 16 is connected by channel-section toggle links 20, 21, and pivot-pins 23, 24, 27 to a cross-bar 28 strapped by a U bolt 32 to the steering head 17. A pedal arm 34 pivoted to the toggle joint mounts a pedal 35 which traces an ellipse having a nearly vertical major axis, and a similar toggle linkage and pedal arm is provided on the other side of the cycle, the lowest point reached by the pin 24 being as shown on Fig. 2. A bolt 22 threaded in a block 25 and nut 26 permits adjustment of the linkage, and guards 38 are provided for preventing clothes from being entrapped. Rubbing plates 40, 41 of nylon carried respectively by link 20 and pedal arm 34 oppose inward swinging of the arm 34 when downward pressure is exerted on the pedal 35, and forward limit stops 36 are provided. In operation, movement of the two sets of links from one to the other of the positions shown in Fig. 2 results in rotation of the chain wheel and propulsion.
Patent GB-1033977-A (GB)
Title: Improvements relating to pirns for textile yarns
IPC: B65H75/18
Filed: 1963-05-03
Abstract: 1,033,977. Bobbins. A. LAW. July 31, 1964 [May 3, 1963], No. 17582/63. Heading B8M. A textile pirn has a protective sheath or sleeve of synthetic plastics material around its stem and removable caps of similar material at the ends. The cap at the smaller end holds the sheath in place while the other cap cooperates with the drive means on the winding machine. The pirn ends are reduced in size to accommodate the caps of which various examples are illustrated, and which are secured to the pirn by screws, weak adhesive, cross-pins, or by being internally screw-threaded or by having internal ribs.
Patent GB-1137211-A (GB)
Title: Improvements in change-speed mechanisms
IPC: F16H3/34
Filed: 1967-04-17
Abstract: 1,137,211. Change-speed gear. KALTENBACH & VOIGT. 17 April, 1967 [21 June, 1966], No. 17585/67. Heading F2D. [Also in Division A5] A change-speed gear for a dental handpiece includes three radially movable countershaft gear units 27, 28, 29 of different ratios and selectively engageable with pinion pairs 44, 45 and 47, 48 on the aligned driving and driven shafts 7, 8 by a rotary control ring 50 encircling the units. The ratio units are carried in mounting blocks 33 radially movable against loading springs 49 and the desired ratio is engaged by turning the ring 50 until an internal cam projection 50a engages the appropriate roller 53 to move the associated gear into engagement with the desired pinions on the shafts 7, 8. Suitable indicia are provided on the surface of ring 50 to show the particular ratio engaged and a ball detent 55 engageable with one of three recesses, 56 locks the ring in the selected setting.
Patent GB-331355-A (GB)
Title: Improvements relating to coal, mineral and rock-cutting tool-arms, for use in combination with electric, compressed-air and like power-motors
IPC: E21C25/30
Filed: 1929-06-08
Abstract: 331,355. Jones, G. T., and Kemp, W. June 8, 1929. Coal-cutting machines ; endless-chain machines. - In a chain-type machine for cutting coal, rock, &c., the chain-jib is formed of regularly-increasing width from its free end to its fixed end. The jib is formed of upper and lower plates 6 each with bars 12 riveted thereto, the two parts so formed being then connected by bolts 14. Bushings 16 are provided to support the idler sprocket. The jib is adjustably secured to a carrier 5 by bolts 11 passing through slots 10, the adjustment being effected by a screw 9 supported in a sleeve 8 on the carrier and engaging a nut 7 on the jib; the adjusting - means may be arranged within the thickness of the jib. The carrier is rotatably secured below the motor casing M by a ring 3 and has teeth 19 engaged by a bevel or spur pinion, or by a worm, for adjustment; the teeth 19 may be shrouded. The cutter-chain 15 may have opposed sets of cutting- teeth to permit cutting in either direction of movement and is driven by a sprocket 1 with slots for Engagement with projections on the end of its driving shaft 2 which may be driven directly by the motor; the shaft 2 is hollow to form an oil reservoir, and the sprocket 1 is held thereon by a tapered screw R. An opening may be provided in one of the plates 6 to permit removal of dust &c.
Patent GB-1308351-A (GB)
Title: Tuyere feed lines in blast furnaces
IPC: C21B7/16
Filed: 1970-04-14
Abstract: 1308351 Pipe joints DES ANCIENS ETABS PAUL WORTH SA 14 April 1970 [21 April 1969 13 Feb 1970] 17680/70 Heading F2G [Also in Division F4] A tuyere stock for shaft furnaces comprises at least three serially coupled conduit means 17, 19, 22 lined with refractory material, the intermediate conduit means 19 being connected to conduit means 17, 22 by means of two compen- SECTION A-A sators 14 and 15 which comprise universal couplings and flexible hermetic coupling means, which take up the horizontal and vertical expansions occurring during operation and also correct the constructional inaccuracies during assemblage. The conduit 22 is welded at one of its ends to a horizontal collar 11<SP>1</SP> co-operating in the collar 11 of a bend portion 4 and at its other end to one side of the bellows unit which constitutes the flexible hermetic coupling means of compensator 14. The opposite side of the bellows units is provided with an intermediate collar 23 to which the central conduit 19 of rectilinear portion 29 is detachably affixed by means of a flange 18 and bolts. The universal coupling of compensator 14 between the tubes 22 and 19 is performed by means of an articulated mechanical connection comprising arms 21 and 25 connected rigidly to the flange 18 and the collar 11<SP>1</SP> respectively and rotatably to a first pair of attachments 41 and 41<SP>1</SP> and a second pair 42 and 42<SP>1</SP> respectively, which are arranged on a connecting ring 24 in mutually perpendicular axes. A steel sleeve 39 extends over the major part of the bellows units of compensator 14. At the place where the compensator 14 is mounted, internal linings 37 and 40 form a cascade joint 43, the interior of the joint being filled with a highly refractory and compressible fibre.
Patent GB-726035-A (GB)
Title: Improvements relating to spring balances
Inventor: ASTON HORACE
IPC: G01G3/08
Filed: 1953-06-26
Abstract: 726,035. Weighing apparatus. SALTER & CO., Ltd., G. Feb. 23, 1954 [June 26, 1953], No. 17729/53. Class 143. Relates to spring-balances in which the loadsupporting part is connected to a fixed part by a parallel-motion system, and consists in actuating the indicator by a member attached to or controlled by a member of the parallel-motion system, the member tilting. As shown in Fig. 3, the goods pan 13 is supported on a column 39 coupled by leaf springs 7, 8 to a fixed column 3; attached'to spring 7 is a curved lever 23 so that as spring 7 flexes, lever 23 tilts and its tip 23a, Fig. 7, moves, the engaging pointer 30 following it under the constraining action of a light spring 36. For taring, screw 20 may be used to set the pointer to zero when an empty container is on the pan, so that a loaded container will cause the pointer to register the tare weight. Range may be adjusted by screw 32, Fig. 7, by which the point of engagement between member 25a and lever tip 23a is moved nearer to or further from the point about which pointer 30 pivots so that pointer 30 makes a smaller or greater movement for a given deflection of lever 23. In a modification, Figs. 8 and 9, the tilting lever 47 is engaged by a bell crank lever 54, 53 urged against lever 47 by a light spring 56; taring is produced by moving the base 52, on which lever 54, 53 is pivoted, by screw 57.
Patent GB-226748-A (GB)
Title: Improvements in or relating to heat-insulating bottles
IPC: A47J41/00
Filed: 1924-07-24
Abstract: 226,748. Walther, E. R. July 24, 1924. Bottles fitted with drinking-cups. -Relates to insulated bottles of the type fitted with porcelain drinking-cups covered with metal caps and adapted to be removably secured to cover the opening of the bottle. According to the invention, the rim of the cup bears on a yielding packing-ring on the envelope of the bottle and is held by the metal cap through the medium of an elastic layer. The outer casing 1 of the bottle carries an elastic ring 4 which is engaged by the rim 5 of the porcelain cup 6. The cup is covered with a metal cap 7 and contacts with the bottom 10 of the cup through the medium of an elastic layer 9. Toggle levers 11 . . 13 secure the cap to a projection 14 on the casing. Handles 16 are pivoted at 15 so as to be capable of being laid against the cap 7. A wood or other screw bolt 18 in the cork stopper 17 of the bottle is adjusted by a nut 19 so that the application of the cup presses the stopper tightly into the neck. Specification 239,287 is referred to.
Patent GB-1438730-A (GB)
Title: Method and means for compensating for blink occuring during examination of an eye
IPC: A61B3/10
Filed: 1974-04-23
Abstract: 1438730 Blink detector TROPEL Inc 23 April 1974 [23 April 1973] 17798/74 Heading G1A In a device for mitigating the effects of a "blink" on an apparatus measuring the refractive error of the eye the electrical output of a detector 10 (photo-multiplier) receiving focused light reflected off the eye is processed via a preamplifier 11, an amplifier 12 a 500H 3  Œ50H 3  filter 13, a demodulator 14 and a non-linear amplifier 15 to produce a D.C. signal 16 whose magnitude is proportional to a function of the focus of light patterns reflected from the eye. This signal is fed to a digital computer 25 via a delay circuit 22 and an A/D converter 23 to a differentiator 26 and threshold circuit 28 which senses the "blink" by virtue of the "spike" 17 from the differentiating signal 16. The differentiator 26's output activates the threshold unit 28 whose pulse 29 starts a trigger timer 30 providing a further pulse 31 whose duration is slightly larger than the expected duration of the "blink". This pulse 31 is then sent to the computer 25 to stop the signal 16 from the detector 10 being processed till the "blink" is over. The computer 25's output is fed to a printer 24. The small delay imposed by the delay adjustment 22 is to enable the pulse from the triggered timer 30 to reach the computer 25 before the signals 16 containing components produced by the "blink" reach the computer.
Patent GB-989313-A (GB)
Title: A process for the production of perchlorinated aryl isocyanates
IPC: C07C263/16
Filed: 1963-05-06
Abstract: Perchlorinated aryl isocyanates are prepared by chlorinating an oryl isocyanate in a first stage in the absence of a metal catalyst at a temperature of - 20 to + 150 DEG  C., and then chlorinating the product in a second stage at a temperature of 210-250 DEG  C. in the presence of 0.1 to 10% by weight of an inorganic metal salt which is a halogen carrier.  The first stage may be conducted in the presence of an organic solvent. Several catalysts for the second stage are specified. The isocyanates specified as starting materials include unsubstituted and substituted compounds, specified substituents present being chlorine or fluorine atoms, and ketonic, ether or sulphone groups. Examples are given.
Patent GB-253731-A (GB)
Title: Improvements in steam boilers
IPC: F22B9/12
Filed: 1925-07-13
Abstract: 253,731. Webster, H. J. July 13, 1925. Multitubular and return-tube boilers having horizontal and vertical rows of firetubes, the vertical rows being formed of tubes arranged in alternate horizontal rows and the adjacent tubes of the horizontal rows being equally spaced have the top horizontal row 17 spaced from the - third horizontal row 15 a greater distance than the space between horizontal rows below the third row. In this way an increased steam disengagement space is provided between the sides of the two uppermost rows of tubes. In modifications the fire-tubes are arranged in two or more groups separated by vertical passageways.
Patent GB-607294-A (GB)
Title: Improvements in or relating to wireless aerial systems
IPC: H01Q3/18
Filed: 1945-07-14
Abstract: 607,294. Aerials. HORSEMAN, A., ATKINSON, J. R., SKINNER, H. WB., and WARD, A. G. July 14, 1945, No. 18069. [Class 40 (vii)] A microwave aerial system for the production of conical scanning comprises a mirror and waveguide feed in which the end section of guide is rotatable and has its aperture displaced with respect to the axis of rotation. The mirror 10, which may be mounted for movement about one or more axes, is fed by a nozzle 12 coupled to a rectangular waveguide 11. The nozzle 12 comprises a main body member 16 forming a circular waveguide 18 and an Eo-Ho transformer 17 of the kind described in Specification 597,240. Rotatably mounted by ball-races 21 is the end section forming the circular guide 20, the axis of which is angularly desplaced with respect to the axis of rotation. The outer surface is provided with a substantially conical reflecting surface 19. The junction between the rotating and relatively fixed portions is formed as a choke joint, and a gear ring 22 mounted on the rotatable portion enables continuous rotation of the end section to be obtained from motor 13 via the driving pinion 24 and idler pinion 23. Reference has been directed by the ComptroLler to Specification 586,689.
Patent GB-737914-A (GB)
Title: Improvements in or relating to luminescent materials
IPC: C09K11/77
Filed: 1951-07-31
Abstract: 737,914. Luminescent materials. GENERAL ELECTRIC CO., Ltd., GOODING, P. E., and McKEAG, A. H. July 15, 1952 [July 31, 1951], No. 18095/51. Class 39 (1). A luminescent material consists of a silicate material composed of the oxides of lithium, silicon and barium and/or strontium, activated by cerium so as to be excited to luminescence by ultra-violet radiation of wave-length 3650  or 2537 A in high or low pressure mercury vapour discharge lamps or by cathode-rays. The proportion of cerium is in the range of 1 per cent to 20 per cent, preferably 5 per cent to 10 per cent, by weight of the silicate material. The material may contain manganese as an additional activator in a proportion not greater than 5 per cent, preferably 0.5 to 2 per cent, by weight of the silicate material. The material is prepared by heating in a reducing atmosphere, preferably hydrogen, a mixture of compounds of barium and/or strontium, lithium and silicon, together with a compound of cerium with or without a compound of manganese. The compounds can be oxides or compounds from which the oxides are formed during the heating. The molar ratio BaO+SrO: Li 2 0 present in the starting material is in the range of 5: 1 to 1: 5, preferably 3: 1 to 1: 3, and the molar ratio BaO+SrO+Li 2 O: Si0 2  present in the starting material is in the range of 3: 1 to 1 : 1, preferably 3: 1.7 to 3: 2.3. A typical luminescent material described has the composition represented by the molar ratio 1BaO:1SrO: 1Li 2 O: 2.2SiO 2 , activated by 10 per cent cerium and 1 per cent manganese, by weight of the silicate material. Several specific examples are described. The starting materials may consist of barium carbonate and/or strontium carbonate, lithium nitrate or lithium carbonate, silica, and an oxide or nitrate of cerium, with or without a chloride or carbonate of manganese, and can be heated for a total time of from 1-5 hours in hydrogen at a temperature of from 700 C. to 1000 C. The heating may be carried out in two or more steps, the material being ground between the steps; for example first the compounds of barium and/or strontium, lithium and silicon, are fired together in air at a temperature of 700 to 800 C. and then heated with the compound of cerium with or without a compound of manganese. The silica used is that known under the Trade Name Mallinckrodt, which according to the Provisional Specification contains 86.8 per cent Si0 2 . The Provisional Specification also describes materials approximating to the formula xBaO.ySrO.zLi 2 O.2SiO 2 , where (x+y+z)=3 and x or y, but not both, may be zero, preferably where (x+y) lies between 2 and 1¢ and z lies between 1 and 1¢ and where an excess of SiO 2  of the order of 10 per cent by weight is used.
Patent GB-237264-A (GB)
Title: A machine for, and method of preparing quartz rods or canes
IPC: C03B21/02
Filed: 1925-07-15
Abstract: 237,264. British Thomson-Houston Co., Ltd., (Assignees of Miller, L. B.). July 18, 1924, [Convention date]. Forming silica-glass articles; forming rods.-A method of forming fused quartz into rods of suitable length consists in extruding plastic quartz through an aperture to form a long rod or rope of the material, and then cutting the rod into sections which are held at one end and allowed to hang while cooling. The plastic quartz 3, contained in a furnace A, is extruded through an aperture in a nozzle 2 by means of a piston 4 to form a long rod or rope Q which passes between the blades 5, 6 of shears C. A gripping device, situated below the shears, consists of a horizontal disc 7 on the edge of which jaws or tongs E are pivoted. The jaws are closed by the blade 6 of the shears, and a spring on each jaw keeps it closed. The disc is rotated from a shaft 22 through a slipping clutch, a pawl, operated by a cord x attached to the shears, normally preventing the disc from rotating. In use, the rope Q of quartz passes between the shear blades which are closed at intervals to sever it. The blade 6 causes a jaw E to close and grip the severed length of quartz, and the disc 7 is allowed to rotate until the shears are opened. The movement of the disc carries the severed rod away from the shears and brings an open jaw into the severing position. The rods hang from the jaws and are removed when cool.