baber/WOPTO huggingface dataset:
Patent GB-1488937-A (GB)
Title: Lasers
IPC: H01S3/22
Filed: 1975-02-27
Abstract: 1488937 Lasers MAX - PLANCK - GES ZUR FODERUNG DER WISSENSCHAFTEN eV 27 Feb 1975 [1 March 1974 (2)] 8209/75 Heading H1C Laser output pulses are obtained by the photolysis of a gaseous compound of iodine which is combined with a buffer gas in a brewster-windowed container 1 at a total pressure of at least 80 Torrs, the photolysative decomposition and consequential population inversion of the freed iodine atoms being effected by a flash lamp producing substantial ultra-violet radiation in its output spectrum. The flash lamp is annular and is fired by triggering a spark gap 5, the duration of the pumping radiation being restricted to about 2 Ás to prevent self-excitation of the laser. The laser resonator is formed by a concave mirror 2 and plane mirror 3, the output modes being limited by diaphragms 4 and 6. A laser amplifier using the same iodine compound and buffer gas mixture in a container 11 may be included in the output path which includes a filter 9 for rejecting pumping light frequencies. The amplifier is pumped by a flash lamp 10 located in an elliptical reflector 13, the lamp being triggered by a spark gap with a delay of about 1 Ás relative to the firing of the laser generator. Output monitoring is effected by measuring devices 8 respectively coupled to the generator and amplifier outputs, by beam splitters 7. A further measuring device 15 is also provided. Both lasers are coupled to the same gas source through a gas circulating system which comprises a pressure gauge 16, valves 22, a cooling trap 20, a diffusion pump 21, and tanks 17, 19 containing the laser active iodine gas and the buffer gas, respectively. Tanks 18 are provided for forming the gas mixture required. The laser active iodine gas may be C 2 F 5 I, CF 3 I, perfluorine-tertiary butyliodine (t - C 4 F 9 I) or perfluorine - isopropyl iodide (i-C 3 F 7 I). The fluorine may be completely or partially replaced by bromine and/or chlorine. The buffer gas may be sulphur hexafluoride (SF 6 ), argon or CO 2 . The partial pressure of the iodine gaseous compound may be between 5 to 70 Torrs and the partial pressure of the buffer gas must exceed 30 Torrs and may reach 10 atmospheres.
Patent GB-688878-A (GB)
Title: An angle pelvimeter
IPC: A61B5/107
Filed: 1951-04-09
Abstract: 688,878. Surgical appliances. BARZILAI, G. April 9, 1951 [April 8, 1950], No. 8210/51. Class 81 (ii). An appliance, for use in determining the dimensions of the cavity bounded by the hip bones, comprises a universally mounted scale associated with a director device which is constrained to move in a plane parallel to the scale about an axis passing through its centre. The appliance is mounted on a stand provided with means for clamping it to the couch and an arm carries a ball and socket connection 8, at the lower end of which an angular scale 18 is attached. An arm, pivoted at the centre of the scale, is secured to a rigid, adjustable member 22 having a channelled director member 25 at its lower end. The physician's hand is inserted into the cavity with the index finger extending in line with the member 25 and, as it is directed to touch the inner edges of the hip bones, a stud, at the upper end of the member 22, pushes pointers 19, 20 outwards to indicate the angle between them. The distances are measured on the hand itself. A scale 27, having equally spaced perforations, may be attached in order to determine dimensions on an X-ray photograph.
Patent GB-1421127-A (GB)
Title: Enzymes
IPC: C12N9/42
Filed: 1972-02-22
Abstract: 1421127 Animal feed GLAXO LABORATORIES Ltd 21 Feb 1973 [22 Feb 1972] 8215/72 Heading A2B [Also in Divisions C3 and C6] An animal (especially chicken) feed composition comprises pellets of feed mix containing a #-1, 4 (#-1, 3 glucanase-containing enzyme composition derived from P. emersonii, the enzyme showing a retention of 75% of its #- glucanase activity on heating in aqueous solution at pH 6.0, 95C for 10 minutes, and having the effect of increasing the nutritive value of the #-glucan containing feed, e.g. barley, and reducing the stickyness of the droppings.
Patent GB-546795-A (GB)
Title: Improvements relating to clutches
IPC: F16D43/12
Filed: 1941-07-01
Abstract: 546,795. Friction clutches. ARMSTRONG SIDDELEY MOTORS, Ltd., and HOLISTER, F. D. July 1, 1941, No. 8258. [Class 80 (ii)] A friction clutch comprises a driven plate 15 splined to a shaft 17 and clamped between a presser plate 12 and an abutment plate 32. The plate 12 is engaged by springs 18 and is withdrawn manually by a fork 23 acting through levers 20. The plate 32 is engaged centrifugally by weighted pivoted levers 40 which act upon the plate 32 through compression springs 44. A stop plate 27 fixed to the flywheel 26 limits the movement in the engaging direction of both plates 12, 32, the abutment 29 on the plate 12 being adjustable. The disengaging movement of the plate 32 is limited by a stop 33. To facilitate adjustment for wear the flywheel has a number of dowel pins 50, Fig. 2 (not shown) which can be moved to clamp the plate 32 against the stop plate 27.
Patent GB-493685-A (GB)
Title: An improved drilling machine incorporating infinitely variable driving gear
IPC: F16H9/16
Filed: 1938-03-17
Abstract: 493,685. Expanding - pulley gearing. AUERBACH UND SCHEIBE AKT.-GES. March 17, 1938, No. 8268. Convention date, April 7, 1937. [Class 80 (ii)] [Also in Group XXII] In a continuously variable belt drive for a drilling machine, the pulley faces are formed convex as shown in the Figure so as to vary from an included angle of 32‹ at the inner periphery to an angle of 38‹ at the outer periphery in order to preserve contact with the sides of the U-section belt f irrespective of whether it is being bent round a small or large radius. The pulleys have staggered notches so that they can interengage as shown, and axial displacement of the parts of the pulleys is effected simultaneously by an inclined bar movable by a rack and pinion and slidable on a guide rod parallel to the pulley arcs.
Patent GB-492384-A (GB)
Title: Improvements in air cooling means for the cylinder heads of sleeve valve internal combustion engines
IPC: F01P1/10
Filed: 1937-03-20
Abstract: 492,384. Cooling cylinders. CORBITT, R. W. March 20, 1937, No. 8295. [Class 7 (ii)] The junk-head of the cylinder of a sleevevalve engine is cooled bv air which is constrained to flow down the two sides thereof, under a baffle C, and up nearer the centre, as shown by the arrows, Fig. 1, fins B extending from the head on both sides of the baffle. The baffle is elliptical in section, and with a further intercylinder baffle C<2> extends by a curved connection to the engine cowling C<1>, so that a stream of air flowing transversely to a cylinder line is deflected into the heads as shown. An upstanding sleeve B<1> protects the sparking-plugs, but perforations D<1> allow some air to enter the space thus formed. This sleeve may, however, be replaced by a sheet metal member mounted on the sparking-plugs. In a modification, an annular baffle is inserted round the fins B leaving a space between it and the side walls of the head, into which space some of the air is diverted, this air flowing through gaps at the bottom of the annular baffle to join the main stream. The elliptical baffle is replaced by two flat baffles extending across the head through slots saw-cut in the fins B.
Patent GB-1515649-A (GB)
Title: Filler plugs
IPC: F25D23/08
Filed: 1977-02-28
Abstract: 1515649 Seals ILLINOIS TOOL WORKS Inc 28 Feb 1977 [1 March 1976] 08312/77 Heading F2B A polyethylene filler plug for both filling and retaining polyurethane foam insulating material within the hollow cavity 15 between double-wall 11, 14 appliances such as insulated refrigerators, comprises a hexagonal plug having six triangular petal-like flaps 23-28 conically arranged and through which an insulation material filler nozzle 21 may be inserted for the introduction of the foam insulating material within the cavity 15, the conical array of flaps 23-28 opening to readily permit introduction of the nozzle, but on completion of filling the cavity 15 with foam, and subsequent removal of the nozzle, the petal flaps 23-28 close, i.e. return to their abutting conical array to inhibit outward flow of the insulating foam through the filler plug. Initially, the conical form of the petal flaps 23-28 is directed outwardly and the flaps 23-28 are interconnected by frangible webs 31 which taper from a thin centre region 32 to a thicker outer region 34 for controlled rupture of the webs 31 and subsequent inversion of the petal flaps as the filler nozzle 21 is introduced therethrough. In Figs. 5 to 8 (not shown) abutment stops (82, 81) are arranged on the plug body (51) and the adjacent petal flaps 23-28 to prevent the petals 23-28 from springing fully opened outwardly past a predetermined position in the unlikely event that an outward flow of foam material forces the petal flaps 23-28 from their inverted core inwardly-pointed position back to and through or past their original outwardly-pointed position. Reinforcing ribs 36, 37 &c. are provided along the petal flap edges and are bevelled to provide mutual planar free support when inwardly conically arranged in their sealing position.
Patent GB-1099401-A (GB)
Title: Dynamo electric machine having a liquid cooled rotor
Inventor: HEARD JEFFERY GERALD
IPC: H02K9/193
Filed: 1964-02-28
Abstract: 1,099,401. Liquid cooled dynamo-electric machines. ENGLISH ELECTRIC CO. Ltd. Feb. 23, 1965 [Feb. 28, 1964], No. 8329/64. Heading H2A. In a dynamo electric machine having a liquid, e.g. water cooled rotor, wherein the liquid is exhausted through an outlet path which includes one or more radial or substantially radial ducts 15, 16 in the rotor, such path includes means for so restricting the liquid flow in the or each duct that when the rotor is rotating the duct(s) are not full of liquid, whereby they have substantially no pumping effect on the liquid. This prevents cavitation of liquid in an axial duct 11, and as shown there is a restrictor means 21 having an orifice 22 secured to the entrance of each radial duct 15, 16, but in a modification a single restrictor unit may be positioned in the duct 11 and have orifices aligned with each radial duct. The ducts have corrosion resistant liners 12, 14 and the liquid, flowing in the direction of arrows 13, 17, passes into a collector box 18 which is sealed from the rotor shaft 10 by compressed air or gas fed through pipes 25, 26 to chambers 29, 30 in seals 27, 28.
Patent GB-1493900-A (GB)
Title: Electromagnetic speed sensor
IPC: G01P3/488
Filed: 1976-03-02
Abstract: 1493900 Measuring angular velocity electrically SOC ANON DBA 2 March 1976 [18 March 1975] 08338/76 Heading GIN Apparatus for determining the angular velocity of a shaft comprises a ferromagnetic disc 10, Fig. 1, mounted on the shaft and formed with a series of holes 14 on a coaxial circle, which rotates between two coil assemblies 16 each consisting of a winding 22, 24 on a core 18 carrying a permanent magnet 20 at its inner end. The windings are connected in series aiding and the frequency of the induced signal is proportional to speed. The assembly automatically compensates the signal voltage for unequal spacing between the disc 10 and the two assemblies 16.
Patent GB-613145-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J29/82
Filed: 1946-03-19
Abstract: 613,145. Electron beam apparatus. PHILIPS LAMPS, Ltd. March 19, 1946, No. 8417. Convention date, Aug. 14, 1941. [Class 39 (i)] An electrode system for producing a narrow electron beam comprises a cathode, a Wehnelt cylinder 4 and associated disc 6, an anode consisting of the two cylinders 2, 3 and the two discs 1, 20, and a final anode consisting of cylinder 7 and disc 8. Disc 20 is secured to the cylinder 3, and the discs may be secured in position in an assembly after the adjacent cylinder or cylinders have been secured in position in the assembly. Thus, the discs may be positioned with great accuracy; the positioning of the cylinders is less important because the discs bound the focusing fields. The electrodes may be supported from glass rods 18 in the manner described in Specification 483,435.
Patent GB-1140316-A (GB)
Title: Influenza virus sub-unit vaccine
IPC: A61K39/145
Filed: 1967-02-22
Abstract: 1,140,316. Influenza vaccine. AUSTRALIAN NATIONAL UNIVERSITY. 22 Feb., 1967 [24 Feb., 1966; 7 April, 1966], No. 8458/67. Heading A5B. Influenza vaccine is prepared by treating an aqueous suspension of influenza virus particles with an aqueous solution of a soluble salt of desoxycholic acid, whereby the particles are split into sub-units, and then reducing the concentration of the said salt in the vaccine to a non-toxic level. The preferred salt is sodium desoxycholate which is added to the suspension to give a concentration of 0.5 to 2.0% wt./vol., the concentration subsequently being reduced to below 0.01%, e.g. by dialysis. The treatment may be performed at 20‹-37‹C, at pH 7.5-8.2, and takes from 1 to 60 minutes. Virus strains used are swine (SW) strain 15 of shope, BEL strain, Asian AS(A<SP>2</SP>/AA/23/57), and two Australian strains, A<SP>2</SP>/SA/64 and B/Vic/65; they are grown up in embryonate egg culture prior to treatment.
Patent GB-112235-A (GB)
Title: Improved Machine for Punching and Affixing Annular Washers to Carrier Bags, Calendars, Tallies and the like.
IPC: B31B1/90
Filed: 1917-06-14
Abstract: 112,235. Strong, A. G., and Strong & Sons, H. O. June 14, 1917. Making labels. - In punching out annular washers from continuous rolls of gummed paper ribbon, and affixing them to carrier-bags, calendars, tallies, &c., paper strips d<1> are moistened or gummed by rollers y<1> and pressed between sets of adjustable punches r, s and their die plates t, disks being cut out and affixed by the same operation to the article inserted between the die plates. At the end of the stroke of the punches r, s an internal punch y then punches a small hole, the surface of the punch s acting as a die for this purpose. The punches r, s are operated by cams h, i acting on levers k, k<1>. When the punches meet each other, the movement of the lever k<1> ceases, but the cam h, being provided with a greater travel, operates the punch y through the lever o, the movement of the lever k at this time being taken up by the spring b<1>. Water or gum from a tank a<2> is conveyed by pipes d<2> to rolls y<1> which may be perforated rolls covered with felt or the like. The used gum strips are pressed together by rolls i<1> and wound on a roll e<2> rotated by ratchet mechanism operated from a crank x<1> acting through links and levers w<1>, v<1>, t<1>, r<1>, n<1>, the connexion p<1> moving outwards. along the lever n<1> as the diameter of the roll e<2> increases, thus maintaining a uniform feed of the paper strips.
Patent GB-730337-A (GB)
Title: Annular vapouriser for combustion chambers of gas turbine engines
IPC: F23R3/30
Filed: 1953-03-27
Abstract: 730,337. Vapour burners. HOWES, L. D. March 27, 1953 [March 27, 1952], No. 8540/53. Class 75 (1). [Also in Group XII] A gas turbine engine combustion chamber comprises an annular trough having corrugated side walls which surrounds an annular primary fuel duct to provide a plurality of secondary ducts in which the fuel is vaporized. The invention is described with reference to an annular air-jacketed combustion chamber comprising inner and outer walls 15, 16 between which is disposed an annular flame tube 18, 19. A transverse mounting plate 20 is secured within the flame tube by means of flanges 20a, 20b and the annular primary fuel duct is constituted by walls 22, 23 mounted at one end in the channel section 20c of the mounting plate. The annular trough 24 surrounds the open end of the duct 22, 23 and the side walls 24a, 24b are longitudinally corrugated. The surfaces of the corrugations facing the walls 22, 23 are secured thereto. Fuel and air are admitted through openings 21 in the mounting plate and pass downstream through the duct 22, 23, reverse in direction and flow upstream through the passages formed by the corrugations where the fuel is vaporized, the vaporized fuel again reversing in direction to mix with air entering through slots in the mounting plate. The invention is also applicable to combustion chambers of the tubular type, the mounting plate in this case being circular, not annular. Reference has been directed by the Comptroller to Specification 690,632.
Patent GB-419505-A (GB)
Title: Balanced support for fire arms
IPC: F41A23/54
Filed: 1934-03-19
Abstract: 419,505. Firearm supports. MANCINI, P., Lucignano, Arezzo, Italy. March 19, 1934, No. 8561. [Classes 92 (i) and 119.] A self-balancing mounting for firearms comprises a spherical, spheroidal, ovoidal or similarly shaped boss 1 having in its upper part an internal cavity 3 with an opening 4 in the top wall thereof through which an arm 5 passes without touching the edge of the opening, the arm being secured to the solid lower part of the boss and carrying a firearm at its upper end. The boss rests on the ground or in a part-spherical bearing in a base plate 7, so that the heavy lower part of the boss tends to keep the arm vertical while allowing it to be moved easily for aiming the gun.
Patent GB-492670-A (GB)
Title: Improvements relating to gyroscopic apparatus
IPC: G01C19/44
Filed: 1937-03-23
Abstract: 492,670. Electromagnets. HILLIER, A. (Sperry Gyroscope Co., Inc.) March 23, 1937, No. 8562. [Class 35] [Also in Group XX] Eddy current erecting or positioning torques for a gyroscope, particularly a gyro-vertical, are derived from a member providing a magnetic field movable relatively to a conducting disc, cylinder, coil or like member, one of the members being connected directly on the rotor case or rotor bearing ring. As shown in Fig. 1, the rotor casing 1 pivots on a horizontal axis 2 in a gimbal ring 3 pivoting in turn on a horizontal axis 4, 4 in the gimbal ring 5. The latter pivots on a horizontal axis 6 normally aligned with the axis 2 in standards 8. The stator 13, fed with three-phase alternating current and producing a rotating magnetic field is carried by a pendulous frame 11 pivoted to the ring 5 on an axis 12, 12 aligned with the axis 4, 4. The stator 13 co-operates with a conducting ring or coil 7 which is secured to the periphery of an insulating disc 9 carried on a stem 10 by the casing 1. A laminated core 20 is carried by the frame 11 above the disc 9 to concentrate the flux through the ring 7. When the gyro tilts, a current encircles the ring 7 and a torque is applied thereto and precesses the gyro back into alignment with the frame 11. In a modi. fication, the core 20 is dispensed with and the ring 7 and disc 9 replaced by a spherical conducting cap concentric with the point of intersection of the axes 2, 4, and backed by a laminated core. In a further modification, the stator 13 is carried by the base of the casing 1 and the conducting ring 7 by a hemispherical core pendulously suspended by a stem from a universal joint at the base of the casing 1 and in line with the spin axis. As shown in Fig. 6, the rotor casing 39 is universally mounted by pivots 40, 42, and gimbal ring 41 in a fixed ring 43. A five pole stator 51 carried by a stem 52 upstanding from the casing 39 co-operates with a hemispherical conducting member 58 fixed to the instrument housing 44 to provide the erecting torque. The stator is energized by three-phase alternating current, the central pole 57 continuously from the leads 60, 62, and the outer poles 53-56 from the leads 61, 62. A stem 45 depending from the casing 39 carries four mercury contact pots 46, 47, 48, 49, interconnected by tubes 50 and in circuit respectively with the stator poles 54, 55, 56, 53, so that when the gyro tilts, mercury flows to the lowermost pots and closes the circuits to the appropriate outer poles for giving the erecting torque. The erecting torque may be eliminated during accelerations or modified in intensity by switches controlling the current supply to the stator. In a further modification, a permanent magnet is secured to the base of the rotor casing and a pendulous frame, similar to the frame 11, Fig. 1, carries a continuously driven motor on the vertical spindle of which is a conducting disc arranged to rotate beneath the magnet. Specification 393,695 is referred to.
Patent GB-219365-A (GB)
Title: Improvements in and connected with ash-trays
IPC: A24F19/00
Filed: 1923-03-26
Abstract: 219,365. Branfoot, G. S. March 26, 1923. Ash-trays provided with a relatively low central platform are designed so that the distance between the latter and the outer rim is greater than half the length of a cigarette, so that a cigarette, supported partly on the platform and partly on the rim does not fall out of the tray when it burns short. The trays may be adapted to rest one within the other and the central platform may be fixed or detachable. In the form shown in Fig. 5, the hollow tapered platform k<1> is held friction-tight by a raised portion l. Alternatively, the raised portion at the bottom of the tray may be screw-threaded to engage the internal screwthread of the platform. A bayonet joint may also be used to attach the platform to the tray, or the platform may be hinged as at v, Fig. 8. a central well q being formed by the platform u having a central perforation. In the tray shown in Fig. 9, to prevent cigarettes being placed on the rims near the platform, raised portions 5 are formed. The platform may also comprise a piece of ribbed rectangularly bent metal which is sprung into a recess formed at the bottom of the tray by ribs 8, Fig. 11.
Patent GB-276471-A (GB)
Title: Process and apparatus for the production of hard homogeneous combustible material, or objects such as picture frames, blackboards, lighting structures and the like from peat, peat moss, lignite and similar substances
IPC: C10F5/04
Filed: 1926-03-30
Abstract: 276,471. Jirotka, B. March 30, 1926. Drawings to Specification. Moulding peat.-Peat, peat moss, lignite &c. which has been subjected to a continuous pressing process by means of a worm or the like followed by a rubbing process, is moulded by first pressing the plastic mass in a mould, removing and drying slightly, and then pressing in a smaller final mould.