baber/WOPTO huggingface dataset:
Patent GB-633000-A (GB)
Title: Improvements in the recording and reproduction of oscillations
IPC: G11B3/00
Filed: 1947-02-10
Abstract: 633,000. Recording and reproducing sound. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 10, 1947, No. 3829. Convention date, Dec. 23, 1943. [Class 40 (ii)] [Also in Group XXXIX] When recording or reproducing sound with a variable width optical sound track, zero-line displacements attributable to variations of the resistance encountered by a V-shaped cutter at different frequencies and amplitudes are compensated by means of a half-wave rectifier 11 connected in parallel with a recording and reproducing device 10, Fig. 6. Filters 12, 13 are so designed as to match the correction with the displacement over a range of frequencies and amplitudes respectively. The required characteristics are determined experimentally. In a modification, Fig. 6, the rectifiers and the filters are included in a feedback circuit coupled with the output of an amplifier 30 through a quadripole 32.
Patent GB-547508-A (GB)
Title: Improvements in or relating to building construction
IPC: E04B7/02
Filed: 1941-03-24
Abstract: 547,508. Building construction. PERRY, S. D. March 24, 1941, No. 3956. [Class 20 (i)] A building comprises an internal upright 1 supporting a roof frame 4, 5 from which depends tension members 3 to the lower ends of which the floor is attached and which is supported wholly from the roof. The tension members 3 may form the supports for the side closure. A crane 7 may be mounted upon the upright 1 to facilitate the raising of the material from which the structure is built. The upright may comprise four spaced members placed at the corners of a square, set in the ground at the base and joined together at the top.
Patent GB-461773-A (GB)
Title: Improvements in and relating to brakes
IPC: F16D51/26
Filed: 1936-02-10
Abstract: 461,773. Internal shoe brakes. BENDIX AVIATION CORPORATION. Feb. 10, 1936, No. 4004. Convention date, Feb. 11, 1935. [Class 103 (i)] In an internal brake comprising two shoes 20, 22 adapted to anchor at either end according to the direction of drum rotation, the shoes are operated by a cable 16 and an equaliizing bar 74 connected at one end to one lever 60 and at the other end to a link 72 connected to the other lever 70. The levers are pivoted at 62 to one shoe and engage adjustable thrust members 34 passing through the anchors 28, 30 and engaging the end of the other shoe. The ends of the levers 60, 70 are guided laterally by a pin 66. In a modification the thrust member embraces the anchor. In a further modification the lever 60 is replaced by two levers engaging one another, one lever being pivoted on the shoe and the other connected to the equalizing bar and pivoted on the anchor. In a further modification the centre of the equalizing bar is connected by a lever to a hydraulic operating cylinder. An adjustable thrust member comprises a threaded stem 534, Fig. 12, engaging the shoe 22 and carrying a toothed nut 546 adapted to be turned by a crown gear 52. The stem 534 has a flange 542 seating on the anchor 30, and engaging a member 544 slotted to receive the shoe 20.
Patent GB-103897-A (GB)
Title: Improvements in Radiant Heat Baths.
Inventor: CHASE FREDERICK
IPC: A61N5/06
Filed: 1916-03-17
Abstract: 103,897. Chase, F. March 17, 1916. Hot-air baths.-A radiant heat bath comprises a light arch-shaped framework of longitudinal metal or wood strips a and transverse steel members b, which carries lamps f. The upper strips a are curved to form concave reflectors c and are made with beaded edges e forming ducts for the wiring of the lamps. The wires at the ends of the members a are led into a tube b' constituting the outer arch of the framework, and pass through a socket k to a plug for connexion to a wall socket. A regulator is mounted on the framework so that the patient can control the temperature of the bath. The bath is placed on the bed over the body of the patient, and the bedclothes are disposed over the framework, leaving only the patient's head exposed.
Patent GB-973158-A (GB)
Title: Controlling device for control and safety rods for nuclear reactors
Inventor: ALFRED MARC
IPC: G21C17/12
Filed: 1961-02-03
Abstract: 973,158. Dashpots. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb. 3, 1961 [Feb. 5, 1960], No. 4114/61. Heading F2S. [Also in Divisions G6 and H2] The control rod 7, Fig. 15, of a nuclear reactor is connected to a cylindrical member 109 integral with the lower end of which is a tubular bush 108 which, at the end of its travel when the member 109 is projected downwards, covers a tubular support 118 and this has the effect of damping the fall of the rod 7, the bush 108 having openings 119 and together with the support 118 constituting a dash-pot. In Fig. 15, the openings 119 are shown as increasing in size towards the lower end of the bush 108.
Patent GB-823293-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J75/00
Filed: 1957-02-06
Abstract: The invention comprises an 11b -hydroxy-21-oxy - 4,6,17(20) - pregnatrien - 3 - one represented by the formula <FORM:0823293/IV (a)/1> wherein R is hydrogen or the acyl radical of a hydrocarbon carboxylic acid containing from 1-12 carbon atoms and a process which comprises the steps of (1) reacting alkyl 3,11-diketo-4,6,17(20)-pregnatrien-21-oate with at least two molar equivalents of pyrrolidine to produce the 3,7-dipyrrolidyl enamine thereof represented by the formula <FORM:0823293/IV (a)/2> (2) reducing the carbonyl group of the thus-produced 3,7-dipyrrolidyl enamine to produce the 3,7-dipyrrolidyl enamine of 11b ,21-dihydroxy - 4,6,17(20) - pregnatrien - 3 - one represented by the formula <FORM:0823293/IV (a)/3> and (3) hydrolysing the thus produced 3,7-dienamine of 11b ,21-dihydroxy-4,6,17(20)-pregnatrien-3-one with an aqueous hydrolysis agent to produce 11b ,21-dihydroxy-4,6,17(20)-pregnatrien-3-one.  Reduction of the 21-carbonyl compound to the corresponding 21-hydroxy compound may be effected with a metal hydride reducing agent such as lithium aluminium hydride, sodium aluminium hydride or sodium borohydride catalysed with AlCl3 or CaCl2.  Removal of the enamine groups may be effected with either aqueous acid or aqueous base, an alkali metal hydroxide preferably in aqueous methanol or ethanol, being preferred. In examples: (1) methyl 3,11-diketo-6-bromo-4, 17(20) - [cis] - pregnadien - 21 - oate obtained by treating methyl - 3 - acetoxy - 11 - keto - 3,5,17 (20) - [cis] - pregnatrien - 21 - oate with N-bromoacetamide, is heated with collidine to obtain methyl 3,11-diketo-4,6,17(20)-[cis]-pregnatrien-21-oate which is converted to the 3,7-dipyrrolidyl enamine with pyrrolidine; the 3,7 - dipyrrolidyl - 3,5,17(20)-[cis]-pregnatrien-21-oate so obtained is then reduced and hydrolysed to obtain 11b ,21-dihydroxy-4,6,17(20)-[cis]-pregnatrien-3-one; (2) the product of (1) is acylated with acetic anhydride to obtain 11b  - hydroxy - 21 - acetoxy - 4,6,17(20) - [cis] - pregnatrien-3-one; other esters are also mentioned; (3) the product of (2) is hydrolysed to obtain 11b ,21 - dihydroxy - 4,6,17(20) - [cis] - pregnatrien-3-one; also described is the production of 11b ,17a -dihydroxy-21-acetoxy-4,6-pregnadiene by oxidatively hydrolysing 11b -hydroxy - 21 - acetoxy - 4,6,17(20) - [cis] - pregnatrien-3-one. Methyl 3 - acetoxy - 11 - keto - 3,5,17(20)-[cis]-pregnatrien-21-oate is obtained by treating methyl 3,11-diketo-4,17(20)-pregnadien-21-oate with acetic anhydride. Reaction with methyl orthoformate instead of acetic anhydride yield the corresponding 3-methoxy compound. Specification 749,201 is referred to.ALSO:An 11b -hydroxy-21-hydroxy- or -acyloxy-4,6, 17(20)-pregnatrien-3 one is employed in ointments and creams for topical application for inflammatory conditions of the eyes, ears and skin due to bacterial infections, contact dermatitis and allergenic reactions.  Specification 749,201, [Group IV (b)], is referred to.
Patent GB-1240447-A (GB)
Title: Extraction of alkyl lead compounds with aliphatic hydrocarbons
Inventor: YANG KANG
IPC: C07F7/24
Filed: 1970-01-28
Abstract: 1,240,447. Extracting alkyl-lead compounds. CONTINENTAL OIL CO. 28 Jan., 1970, No. 4140/70. Heading C2J. [Also in Division C7] Organic solutions of lead alkyls are extracted with C 5-18 , preferably C 6 -C 12 , liquid aliphatic hydrocarbons. The solvent may be dimethylformamide or acetonitrile, and the solution may be obtained by electrolytic synthesis, in which case continuous extraction can be used. The lead alkyl may be PbEt 4  and the hydrocarbon may be hexane.
Patent GB-215319-A (GB)
Title: Improvements in and relating to compressors for fluids
IPC: F04B27/06
Filed: 1924-02-18
Abstract: 215.319. Jouanneaux, P. M. May 5, 1923, [Convention date]. Oscillating - cylinder pumps.-The piston rod of a compressor is pivoted on a stationary pin, while the cylinder is given a reciprocatory motion about it; the cylinder is provided with cooling means such as ribs, and the piston is provided with a suction and a delivery orifice. The rod 0 of the piston B oscillates on an axle pin K secured to a stationary base. The cylinder is formed with ribs A<1> and with a rod containing a ball bearing h engaged by a crank-pin G fixed to a disc F rotated bv a shaft E driven by a pulley, and revolves in bearings carried by a standard on the base. The piston is formed with an inlet valve I and a delivery duct J. The apparatus may comprise a series of pistons and cylinders.
Patent GB-345753-A (GB)
Title: Improvements in or relating to machines for threshing maize
IPC: A01F11/06
Filed: 1930-02-07
Abstract: 345,753. Thrashing-machines. SCHATZ, C., HETHEY, A., and MoLELLAN, L. P., 30, Rua Libero Badaro, Sao Paulo, Brazil. Feb. 7, 1930, No. 4208. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 8, 1930.] [Class 58.] To separate the grain from the husk and the cob of maize the ears are introduced singly into a centring device comprising a number of curved flexible steel strips 4 that directs the ears to a husking and shelling device. This device is mounted on a flywheel 7 and comprises a cylindrical box 8 with a conical upper part 9 provided with a central opening 10. Radial blades 11 project inwardly from the part 9 and are shaped at their ends to form knife portions 12 extending in planes parallel to the vertical axis of the machine. The cutting edge of each knife has two sharpened points 13. The blades are secured by screws passing through radial slots in the part 9 to sliding members 14 that are normally pressed inwards by springs 15. The flywheel 7 and its associated parts are rotated by hand or power from a shaft 19. A spiral gear 30 secured to the part 9 engages teeth at the ends of toothed feeding drums 23, 24, mounted in spring pressed bearings and causes these drums, which are carried in a frame supported by a stationary tube 16, to rotate when the flywheel rotates. The ear of maize, centred by the strips 4, is engaged by the knives 12, the husk and the grain being cut from the cob which is gripped and pulled into the tube 16 by the drums 23, 24. The husk and grains are opened and separated by the blades 12 and fall to the bottom of the machine where they are separated by an air current.
Patent GB-834674-A (GB)
Title: Improvements in or relating to gas taps and cocks
IPC: F16K35/14
Filed: 1957-02-07
Abstract: 834,674. Grilling stoves; doors. CANNON INDUSTRIES Ltd., and OATLEY, A. F. May 6, 1958 [Feb. 7, 1957], No. 4230/57. Class 126 [Also in Group XXIX] A gas tap for' controlling a grilling burner mounted at the top of a gas oven has its spindle provided with a semi-circular disc 9 to which is pivoted a latch 18. The end 20 of the latch 18 is provided with a guide in the form of a flanged bobbin-like member 21 engaging the lower edge of the latch, such that when the gas tap is turned to the "on" position, the latch is moved into the path of the oven door 23, preventing the closing of the door. Alternatively, the latch may have a slot which engages a headed or a grooved pin having portions to engage the faces of the latch on both sides of the slot, to guide the latch in a similar manner to the bobbin.
Patent GB-490373-A (GB)
Title: Improvements in or relating to drying apparatus
IPC: F26B11/04
Filed: 1937-02-12
Abstract: 490,373. Rotary drying-apparatus for grass &c. FORRES, S. K. GUTHRIE, LORD, and LOMONOSSOFF, G. V. Feb. 12, 1937, No. 4242. [Class 34 (ii)] Material, and particularly grass, is fed into a rotary drying - drum by a stream of hot gas which conveys it rapidly away from the entrance to the drum. The drum is supported on rollers 32 and comprises coaxial cylinders 20, 24, 23, the outlet end of the cylinder 20 being connected to a fan 3 and the inlet end of the cylinder 23 to a furnace 1 having adjustable air inlets 10, 15 and from which a stream of air and gas is drawn through the drum by the fan. The grass is fed by a conveyer 53 into a hopper having pivoted discharge flaps 18 operated through linkage by a push-rod 52 and falls into the gas stream by which it is carried in suspension to the end of the cylinder 23. At this point the velocity of the gas falls and the grass drops out of suspension and is carried through the annular spaces between the cylinders partly by longitudinal blades 37,38 on the cylinders and partly by the gas stream. The velocity of the stream is increased towards the end of the cylinder 20, by reducing the sectional area of the annular space between the cylinders 20, 24, sufficiently to entrain the dried grass which is discharged by the fan 3, e.g. into a container.
Patent GB-361734-A (GB)
Title: Improved process for the manufacture of artificial stone and apparatus therefor
IPC: C04B22/12
Filed: 1931-02-11
Abstract: 361,734. Cement. BRIGHENTI, G., 10, Rue Franlin, Lyons, France. Feb. 11, 1931, No. 4330. Convention date, Feb. 12, 1930. [Classes 22 and 70.] Artificial stone with a basis of cement and sand is made very hard by adding to the mixing water a solution of ferric chloride of about 20 per cent strength and slowly drying the product by passing through a series of hot chambers, with a final bath in molten sulphur. An apparatus to carry out the process consists of a series of chambers 1 .. 5, the last containing a bath of molten sulphur 6. Hot air is passed to chamber 4 from a heater 15, and thence to chamber 3 by conduits 18, 19, and finally from chamber 2 to chamber 1 by conduits at the bottom. A cage running on a rail 11 conveys the material through the chambers. In chamber 5 the cage is lowered by chains 28 from a winch into the bath of sulphur 6. Heat insulating doors 9, 10 are at the front and end of the apparatus, partitions 7 and doors 8 are between each chamber. Supports 12 for the rail 11 are of unequal height to allow of an inclination of the rail from the front to the end of the apparatus.
Patent GB-138925-A (GB)
Title: Improved sound record for gramophones and the like
IPC: G11B3/70
Filed: 1920-02-12
Abstract: 138,925. ãolian Co., (Assignees of Young, F. L.). June 28, 1916, [Convention date]. Disk records.-The limits of the playing portion of a disk record are indicated by distinctive coloration or like means, in order that the stylus may be placed in correct position for starting playing or for adjusting an automatic stopping or repeating device. As shown, the playing zone is defined by colouring the first and last playing grooves 3, 5 or the adjacent non-playing grooves. The colouring may be superficial or incorporated in the record, and may underlie a transparent coating; or it may be phosphorescent or selfluminous.
Patent GB-162828-A (GB)
Title: Improvements in or relating to protective arrangements for electric distribution and transmission systems
IPC: H02H7/26
Filed: 1920-02-13
Abstract: 162,828. Callender's Cable & Construction Co., Ltd., and Hunter, P. V. Feb. 13, 1920. Protective arrangements for three-phase distribution lines in which one phase is split into two parallel conductors. The split conductors B, C thread through balancing transformers T', T<2> at both ends of the line, and additional balancing- transformers T' - - T<6> threaded by split in conjunction with unsplit conductors are arranged to disturb the normal balance of T<1> or T<2> in case of a fault between phases or a fault to earth. Instead of four additional transformers, only two may be employed, and are then threaded by two split conductors in conjunction with one or two unsplit conductors.
Patent GB-766963-A (GB)
Title: Improvements in or relating to automatic platen printing presses with rotating paper grippers
IPC: B41F1/60
Filed: 1955-02-15
Abstract: 766,963. Platen printing machines. SCHNELLPRESSENFABRIK AKT.-GES. HEIDELBERG. Feb. 15, 1955 [April 12, 1954], No. 4418/55. Class 100(2) [Also in Group XXIV] In an automatic platen printing machine having rotating grippers 1 for feeding copy sheets, a displaceable guard 2, disposed in front of the grippers, is mounted on a rotatable shaft 4 which is connected by a Bowden cable 7 to interrupt the drive to the machine when the guard is lifted, and further operating handles 12, 14 are provided to permit the shaft 4 to be rotated to stop the machine, the further handles being accessible from the rear and side of the machine. The cable 7 is connected to a short arm fixed to shaft 4 and the handle 12 is mounted on the rear end of the shaft. The handle 14 is mounted on a slidable rod 15 connected by a pin and slot connection to an arm 16 on rod 4. The Bowden cable 7 is connected to a pawl 8, Fig. 5. Inits normal running position the end 8a of the pawl is engaged by the end of a stud 10, Fig. 4, on the control lever 9 and this holds the control lever in operative position against the tension of a spring 21. When the shaft 4 is rotated the cable 7 swings the pawl 8 into the broken line position so as to free the control lever and disengage the drive to the machine. A hooked projection 24 on lever 9 is engaged by the pawl in tripped position to prevent the lever being used to re-engage the drive until the guard has been replaced.
Patent GB-241782-A (GB)
Title: Improvements in vaporizers for use on internal combustion engines
IPC: F02M1/00
Filed: 1925-02-17
Abstract: 241,782. Welch, G. R. Feb. 17, 1925. Vaporizers, external. - A vaporizer through which is passed a rich mixture of air and fuel which is subsequently diluted with cool air, comprises two spaced sheets of thin metal readily removable, located over an opening in the exhaust manifold and forming a passage for the mixture. The plates 9, 10, of which 9 is corrugated, are located over an opening in the exhaust manifold 7 and are secured against the inner part 13 of said manifold by a nut 12 and against the outer part at 15, at which a gasket may be used, by the cover 6 and a nut 14. An air space 16 between the cover and the plate 10 prevents cooling. An elbow 19 is connected at one end with a mixture pipe 4 from a carburettor and at the other end delivers the mixture into the space between the plates, a water nozzle 22 being located at the point of entry of the mixture. The.mixture outlet 17 is formed in the cover 6 and the exhaust cutlet is shown at 8. In a modified construction, Fig. 4, air enters at 36 and the float chamber 23 is mounted on the cover 24 and is connected through a three-way cock with a light and heavy fuel supply. A gasket 30 reduces heat transmission to the float chamber, asbestos may fill the space 35 and the inside of the cover and outside of the plata 34 may be coated with a heat resisting paint such as that disclosed in Specification 202,273, [Class 83 (i), Casting &c. metals]. The vaporizer plates 33, 34 are clamped in position by screwed bushes 31, 32 and the cover is secured by four studs. The plates are about one-fortieth of an inch thick and may be of brass, steel, iron, or aluminium alloy, or calorized steel plates may be employed. In either construction an additional float chamber for water may be provided.
Patent GB-695711-A (GB)
Title: Improvements in or relating to agricultural implements
IPC: A01G23/06
Filed: 1950-02-21
Abstract: 695,711. Agricultural implements. SALMON, N., and OVERSEAS FOOD CORPORATION. April 5, 1951 [Feb. 21, 1950], No. 4462/50. Class 6(i) Tines 20 are connected to a tool-carrying frame by a transverse torsion bar or bars 22 to which the upper ends of the. tines are secured, the bar or bars being anchored to the frame at some distance from the blade or blades and being stiff enough to transmit normal forces due to draft without appreciable deflection of the tines, but capable of yielding under frontal shock on the tools, as when meeting an obstruction in the earth, sufficiently to minimize damage to the tools. In the machine shown, two members 11, of which only one is shown in Fig. 1, constitute the sides of the machine frame and each has welded to it a channel 15 which carries, by bolts 16, a bearing 17 for a square-section torsion bar 22. A plate 18 is mounted at each end of the bar and each plate carries bladed tines 20. The centre of the bar 22 passes through square holes in a pair of levers 31 which are welded to a sleeve 30 journalled in a bearing 29, the bearing being suspended from a central frame member 14. A shear pin 35 connects the levers to a link 33 pivoted to the frame. In use, the bar 22 twists when the tines meet an obstruction, thus absorbing the blow, and the pin 35 breaks to allow the tines. to swing freely if the obstruction cannot be cut through. The machine is generally of the construction described in Specification 695,707 and may have its tines each associated with a rotary cutter as in Specification 695,709. Specification 695,710 also is referred to.
Patent GB-1061101-A (GB)
Title: Heat-sealing sheets of heat-sealable materials
Inventor: SAMWAYS BRUCE
IPC: B29C65/00
Filed: 1965-02-02
Abstract: 1,061,101. Seaming non-metallic sheet material. COLODENSE Ltd. Jan. 26, 1966 [Feb. 2, 1965], No. 4508/65. Heading B5K. At least two sheets 3 of flexible heat-sealable material are heat-sealed between a pair of heated jaws 1, 2 and, after heat sealing, are removed from the jaws 1, 2 by directing jets of air from the heat sealing surfaces 8 of the jaws against the sheets 3. The material of the sheets 3 may be a heat sealable film, e.g. polyethylene or polypropylene, a non-heat-sealable base coated on one or both sides with a heat-sealable coating, e.g. cellulose film coated with a nitrocellulose or a vinylidene chloride copolymer coating, aluminium foil coated with polyvinyl acetate, or paper or a woven or non-woven fabric coated with a heatsealable composition. Preferably, the temperature of the air forming the jets is such that the jaws are not appreciably cooled, e.g. the temperature of the jaws may be 120-140‹ C. and that of the air at least 100‹ C. In one embodiment, Fig. 2, the steel jaws 1, 2 each contain electrical heating elements 4 and a piston 9 slidably mounted in a chamber 5. In operation, the jaws 1, 2 grip the sheets under pressure whilst heat sealing them together. During heat sealing, air in the chambers 5 is heated by the jaws 1, 2 up to a temperature approaching that of the jaws. After heat sealing, the jaws 1, 2 begin to move apart and, simultaneously, each piston 9 moves to the dotted line position to force heated air out of passageways 6 as air jets to separate the sheets 3 from the jaws 1, 2. As the piston 9 returns to its original position, air from the atmosphere is drawn into the chamber 5 through a port 10 having a one-way valve 11. The movement of the pistons 9 may be controlled by a cam mechanism working in conjunction with the opening and closing mechanism for the jaws 1, 2. In an alternative embodiment, Figs. 3 and 4 (both not shown), jaws 12, 13 have gripping faces 8<SP>1</SP> which are serrated in a meshing relationship. Extra heaters 4<SP>1</SP> are provided around the chamber 5. During sealing, the sheets 3 are lightly gripped by the points 14 of the serrations and the pistons 9 are actuated immediately, or slightly before, the jaws 12, 13 contact the sheets 3 so that the heated air jets assist in heat sealing. The apparatus may be manually operated or may form one stage of a packaging machine.