baber/WOPTO huggingface dataset:
Patent GB-808702-A (GB)
Title: Production of tertiary-butyl derivatives of anhydrotetracyclines
Filed: 1956-02-02
Abstract: The invention relates to the tertiary butyl derivatives of anhydrotetracycline, anhydrochlortetracycline and anhydrobromtetracycline, particularly the mono- and di-tertiary butyl derivatives, which have antibacterial activity.  The compounds are produced by reacting the nitrile of the appropriate tetracycline with a strong mineral acid especially sulphuric acid. The reaction is carried out by mixing the nitrile with glacial acetic acid or other fatty acid such as formic, propionic, butyric, valeric or caproic, or with an organic solvent such as methoxyethanol or dimethoxyethane, and treating with isobutylene. In the examples, concentrated sulphuric acid is added to a slurry of tetracyclinonitrile or chlortetracyclinonitrile in glacial acetic acid and isobutylene gas is bubbled through the solution for 4 hours at 20 DEG  C.  Both the mono- and di-tertiary butyl derivatives are produced.  In the case of tetracycline, the derivatives are separated by partition chromatography employing methoxyethanol as the stationary phase and petroleum ether as the mobile phase.  In the case of chlortetracycline, the reaction solution is diluted with benzene, extracted with water, the aqueous extract is cooled and allowed to stand.  The crystalline solid produced is dissolved in methanol, adjusted to pH 4.0 by means of sodium acetate and the tertiary butyl anhydrochlortetracycline which crystallizes is treated with carbon and then crystallized from ethanol.  Reference has been directed by the Comptroller to Specification 766,512.
Patent GB-1047671-A (GB)
Title: Improvements in or relating to jewellery pads
IPC: A47F7/02
Filed: 1965-01-27
Abstract: 1,047,671. Jewellery display pads. H. E. BAKER. Oct. 14, 1965 [Jan. 27, 1965], No. 3491/65. Heading A4T. A jewellery display pao is made by applying lines of pressure sensitive adhesive 11 to the face of a cardboard backing plate 10 adjacent its edges, laying a filling pad 12 of foamed rubber or foamed plastic within the confines of the lines of adhesive, placing a cover 13 of velvet over the pad 12 and applying pressure by a suitable press to the cover 13 over areas corresponding to the lines of adhesive to bond the cover to the backing plate.
Patent GB-1496032-A (GB)
Title: Antennae
IPC: H01Q19/17
Filed: 1975-01-28
Abstract: 1496032 Aerials WESTERN ELECTRIC CO Inc 28 Jan 1975 [31 Jan 1974] 3561/75 Heading H4A An antenna comprising a main reflector and smaller subreflector in an offset Cassegrain-type arrangement having a focus on the antenna axis has both reflectors displaced from the antenna axis 50 and disposed on opposite sides of a notional plane 59 and has a plurality of feeds 54, 55, 57, 58 (Fig. 6C) located about and displaced from the focus; the reflectors being arranged so that a point source at the focus would provide a beam whose axis impinges on the centre 60 of the main reflector 52. In the embodiment shown the feeds 54-58 are in an approximately straight line (Fig. 5, not shown) through the feed 56 at the focus, the subreflector 53 being enlarged (Fig. 6C) to compensate for spillover loss that would otherwise result. All the beam axes are directed on to the reflector centre 60. The feeds may be displaced in other directions located approximately in the focal plane. The enlarged subreflector 53 may deviate from a true hyperboloid portion and the main reflector may require reshaping from the true paraboloid portion. The antenna may be mounted on azimuth and elevation controls (Fig. 5, not shown.
Patent GB-111408-A (GB)
Title: Wheels for Toys.
Inventor: TURNER MARIE
IPC: A63H17/26
Filed: 1917-03-13
Abstract: 111,408. Turner, M. March 13, 1917. Mechanical toys.-Wheels for toys have the spokes 1 and hub formed of a single piece stamped out of a flat plate or disk of vulcanized fibre or similar material, and the rim 5 formed by two or more convolutions of a strip of vulcanized fibre. The tapered ends of the strip are secured to the adjacent convolution by means of tacks, with or without adhesive material inserted between the layers. The outer ends of the spokes 1 are pierced at 2 to receive tacks &c. for securing to the rim 5, and are scored at 3 to facilitate assemblage. A central hole to receive a brass bush 4 is provided, and the complete wheel may be coated with a material having a decorative effect. Fig. 3 shows a wheel with two sets of dished spokes.
Patent GB-1246131-A (GB)
Title: Improvements in mounts for pictures
IPC: A47G1/14
Filed: 1968-01-24
Abstract: 1,246,131. Picture mounts. DAKOTA Ltd. and R. BENT. Jan.23, 1969 [Jan. 24, 1968], No. 3645/68. Headings A4H and A4X. A picture mount comprises a backing sheet of card or like material which has cuts 3, 4 and 5 defining three sides of a tongue, the fourth side being defined by a score line 7, a score line also being present along 10. The corners of end 6c of the tongue engage with shoulders 8 and 9 formed along the lateral sides 3 and 5 of the tongue. The tongue preferably tapers outwardly and is preferably formed with laterally extending ears for engagement with shoulders 8 and 9.
Patent GB-971541-A (GB)
Title: Improvements in or relating to microphone and earphone sets
IPC: H04M1/05
Filed: 1961-01-31
Abstract: 971,541. Head-sets. L. E. BONNIN. Jan. 31, 1961 [Feb. 24, 1960; Sept. 19, 1960; Dec. 27, 1960], No. 3681/61. Heading H4J. A microphone and earphone set includes at least one earphone mounted in an earpiece disposed to face the auditory duct of one ear, a microphone carried by the or another earpiece and positioned to engage the area of the zygmatic process of the temporal bone or the area of the tip of the mastoid process of the temporal bone at one side of the wearer's head, and supporting means for securing said earpiece or earpieces on the wearer's head. A support 1 (Fig. 1) carries a pair of ear-flaps 2 adjustably mounted by rods 3. Each ear-flap 2 carries an earphone and a contact microphone 6 of dynamic type. An amplifier associated with the microphone 6 is incorporated in the ear-flap 2 (Fig. 2, not shown). The ear-flap is of polyvinyl foam or cellular rubber. Ear-flaps 2 (Fig. 4) are sewn or glued to a head-dress 10 comprising a pleated strip 13, side panels 11, 12, and an elastic head-band 18. The ear-flaps 2 are protected by leather caps 15 having stiff flanges 16 and secured by rivets 19 to head-band 18. Buckles 20a, 21a are provided for adjustment of neck- and chin-straps 20, 21. Alternatively the head-dress is of open-mesh fabric of slightly elastic material (Fig. 5, not shown). The set may have only one earphone 25 (Fig. 8) a ring 28 being applied around the external ear not utilizing the earphone. Two microphones 31, 33 engage the mastoid process of the temporal bone. An amplifier 32 is included. Microphone 33 and earphone 25 may be replaced by an earflap 2 (see Fig. 1) having a microphone and earphone-microphone 33 may be omitted (Fig. 6, not shown) and microphone 31 may engage the zygomatic process of the temporal bone (Fig. 7, not shown). Specification 340,273 is referred to.
Patent GB-431586-A (GB)
Title: Improvements in or relating to electricity meter boxes
IPC: G01R11/04
Filed: 1934-02-05
Abstract: 431,586. Plug boards. SOC. GENERALE ITALIANA EDISON DI ELETTRICITA, 31, Foro Bonaparte, Milan, Italy. Feb. 5, 1934, No. 3722. Convention date, July 12, 1933. [Classes 38 (v)] [See also Group XXXVI] A meter 9 is enclosed in a box 2 which is in sliding engagement with a member 1 fixed to the wall. The fixed member 1 is in the shape of a rectangular box of metal or insulating material and has a top wall 3 which slides in horizontal guides and is secured in place by a lead seal 16. The box 2 is formed of insulating material or stamped metal and has a glass front portion 10. Attached to the lower part of the box 2 is an insulating block 14 carrying four plug terminals 15 which engage corresponding socket terminals 5 mounted on an insulating block 4 secured to the fixed member 1. The plugs 15 and sockets 5 are not rigidly fixed to their blocks, but are free to adjust themselves. The plugs are not split, the sockets being double. The box 2 containing the meter 9 slides in vertical grooves in the fixed part 1 and may be removed, after sliding out the top 3, for substitution by a similar box carrying a different meter. For cutting-off a consumer, the meter-carrying box 2 may be reversed so that the terminals 15 are uppermost, or it may be replaced by a flat diaphragm, the top 3 then being replaced and sealed. For testing or calibrating the meter the box 2 is raised and a pair of insulating blocks carrying plugs and sockets is inserted between the blocks 14, 4 so as to engage the sockets 5 and plugs 15. Connections are made from the plugs and sockets on these auxiliary blocks to the standard meter or other testing apparatus.
Patent GB-431360-A (GB)
Title: Improved compositions containing collagen products and applications thereof
IPC: C09J189/00
Filed: 1934-02-05
Abstract: Glue or gelatin is treated with a mineral, animal or vegetable oil at 130 DEG  C., until a mass of fibres separates, the fibres are separated and then dispersed in an aqueous medium.  The aqueous dispersion may be mixed as a stabilizer with emulsions, e.g. oil-in-water emulsions containing pigments, or with the water used in wet grinding, e.g. of graphite to be used in the impregnation of fibres to be used as electrical resistances, or of sulphur for vulcanization.  Specification 425,049 is referred to.ALSO:Glue or gelatin is treated with a mineral, animal, or vegetable oil at 130 DEG  C. until a mass of fibres separates, the fibres are separated and then dispersed in an aqueous medium.  The aqueous dispersion may be mixed with glue as a size or to increase its setting time, with icecream to control the formation of ice crystals, as a protective colloid with latex to check coagulation, e.g. on concentration, or on addition of asbestos fibre, as a stabiliser with emulsions, e.g. oil-in-water emulsions containing pigments, with cream for whipping or with preserves, jams, or meat extracts, with the fillers or colloidal sulphur in rubber, or with the water used in wet grinding, e.g. of graphite to be used in the impregnation of fibres to be used as electrical resistances, or of sulphur for vulcanization. Specification 425,049, [Group VI], is referred to.ALSO:Glue or gelatin is treated with a mineral, animal or vegetable oil at 130 DEG C. until a mass of fibres separates, the fibres are separated and then dispersed in an aqueous medium.  The aqueous dispersion may be mixed with ice-cream to control the formation of ice crystals, with cream for whipping or with preserves, jams or meat extracts. Specification 425,049 is referred to.ALSO:Glue or gelatin is treated with a mineral, animal or vegetable oil at 130 DEG  C. until a mass of fibres separates, the fibres are separated and then dispersed in an aqueous medium.  The aqueous dispersion may be mixed with the water used in wet grinding, e.g. of graphite to be used in the impregnation of fibres to be used as electrical resistances, or of sulphur for vulcanization. Specification 425,049, [Group VI], is referred to.
Patent GB-746621-A (GB)
Title: An improved screw chaser for threading work pieces
IPC: B23G5/00
Filed: 1954-02-09
Abstract: 746,621. Making screw-thread chasers. ARGUIARRO, A. M. Feb. 9, 1954 [Feb. 9, 1953], No. 3813/54. Classes 83 (2) and 83 (3). Curved screw-thread chasers are made by cutting rings from a bar formed exteriorly with grooves c, which may be inclined at the pitch angle of the thread, dividing each ring into four sections, and then forming a cutting edge b and a rounded tail d on each section. Parallel lands e and an entrance angle a are also provided. Because of their curved shape, the chasers will burnish the threads after cutting them.
Patent GB-909437-A (GB)
Title: Rotary machine for use as a pump, compressor or motor
IPC: F01B13/06
Filed: 1961-02-01
Abstract: 909,437. Reciprocating pumps; compressors. BJORKLUND, G. E. Feb. 1, 1961 [Feb. 8, 1960], No. 3888/61. Classes 8(1) and 102(1). [Also in Group XXIX] A machine for use as a pump, motor or compressor comprises a plurality of rotatable cylinder blocks supported by stationary cylindrical valves eccentrically mounted on a stationary valve shaft, said cylinder blocks housing " radial " pistons which drivingly engage a common rotatable ring surrounding the cylinder blocks, and the parts of the suction and pressure ducts serving the cylinder blocks being relatively angularly displaced so that the pressures acting on the common ring are partly or entirely balanced. In the embodiment shown, three cylinder block assemblies are mounted on eccentrics 46, 48 and 50 of a valve shaft 38, the cross-sectional area of the pistons in the central block 54 being double that of the pistons in the outer blocks 52, 56. The pistons are locked in engagement with the ring 32, a drive shaft being connected to the ring through an end plate 36. The ducts 68, 72 within the valve shaft communicate with ports 66 and 70 respectively in the valves. The suction and pressure parts in the central valve 48 face in the opposite direction to the corresponding ports in the valves 46, 50. In a valve shaft construction, Figs. 7, 8 and 9 (not shown), for three units, the eccentric valve portions are formed on a sleeve surrounding a central shaft. In a construction, Figs. 10, 11 and 12 (not shown), for four units the two inner units are mounted on a common eccentric and act in the opposite sense to the outer units, the individual eccentrics being removably located on a shaft and linked together by interlocking means.
Patent GB-658673-A (GB)
Title: Improvements in gas heated water boilers
IPC: F24H1/18
Filed: 1949-02-12
Abstract: 658,673. Hot-water boilers. LOMAX, W. Feb. 12, 1949, No. 3901. [Class 64(i)] The outer wall of the annular water chamber A of a gas-heated water heater with a central flue C is formed in twc parts A<SP>1</SP>, A<SP>2</SP>, an upper and a lower respectively, formed integrally with the top a<SP>1</SP> and bottom a<SP>2</SP> of the chamber, and the two parts are secured together edge to edge by soldering, brazing or the like to an interior ring or band B the outer diameter of which is the same as the inner diameter of of the outer wall. The band B may have a stiffening flange b or flanges.
Patent GB-729445-A (GB)
Title: Improvements in and relating to metal door, window and like sub-frames
Inventor: CROSS GEORGE
IPC: E06B3/988
Filed: 1952-02-14
Abstract: 729,445. Door and window frames. SOMMERFELDS, Ltd. May 14, 1953 [Feb. 14, 1952], No. 3942/52. Classes 20 (3) and 20 ( 4). Metal door, window and like frames comprise jambs and a head sill of profile section, the head sill a having welded at its ends spigots b which fit tightly into jambs c, and ties g of channel section, with tags g<SP>1</SP> which fit into slots in the base of the jambs c and are turned down.
Patent GB-524813-A (GB)
Title: Improvements in or relating to brackets and like supporting devices
IPC: A47H1/102
Filed: 1939-02-07
Abstract: 524,813. Brackets &c. HARDY, A. G. Feb. 7, 1939, No. 3943. [Class 52(v)] A bracket-like device comprises a deformable wire enclosed in a rubber tube a attached at its ends to suction cups d, e. The wire may be a stranded electric cable or a galvanized wire, and the rubber tube may be fitted over bosses on the cups or be connected thereto by separate tubular pieces. The device may be deformed before or after attachment to a surface to the shape of a hat-peg, Fig. 6, or a plain towel rail, or a soap or brush holder.
Patent GB-591958-A (GB)
Title: Improvements in valve controlled spouts, faucets and the like for filling containerswith liquid
IPC: F16K21/18
Filed: 1945-02-16
Abstract: 591,958. Filling containers with liquids. HISCOCK, J. A. H., and H. & A. ENGINEERING (LONDON), Ltd. Feb. 16, 1945, No. 3959. [Classes 21 and 125 (ii)] [Also in Group XXIX] A device for delivering liquid into containers comprises a nozzle 1 associated with a spring- loaded electrically-operated valve 4 and carrying an adjustable contact 21 whereby, at a predetermined level of liquid in the container, an electrical circuit is completed through the contact and the liquid to cause the valve to close The valve is opened by the plunger 12 of a solenoid 11, acting through a lever 13, when a switch 19 is closed to energize the solenoid. When the liquid in the container reaches the contact 21, a relay 23 is energized thus operating a switch 24 to de-energize the solenoid and allow the valve to close. In a modification, a spring- loaded ball valve opened directly by an electromagnet is employed.
Patent GB-266700-A (GB)
Title: Improvements in or relating to oven shelf handling devices
IPC: A47J45/10
Filed: 1927-02-12
Abstract: 266,700. Parke Inc., W., (Assignees of Parke, TV.). Feb. 25, 1926, [Convention date]. Holding and picking-up tools.-A device for lifting an oven shelf formed of longitudinal bars 15 extending between the transverse portions 11, 12 of a frame or rim comprises a pair of arms 16 resiliently connected at 18 and terminating in jaws formed with laterally projecting prongs 22 to engage under the bars 15 and with right-angled bends 19 to engage the transverse bar 11. Specifications 8583/10, and 265,615, [Class 126, Stoves &c.], are referred to.
Patent GB-438024-A (GB)
Title: Improvements relating to plug valves
IPC: F16K5/22
Filed: 1934-02-07
Abstract: 438,024. Valves. WOLSTENHOLME, R. A., 57, Lincoln's Inn Fields, London.- (Merco Nordstrom Valve Co. ; 400, Lexington Avenue, Homewood, Pittsburg, U.S.A.) Feb. 7, 1934, No. 4008. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 26, 1935.] [Class 135] [See also Groups XXVI and XXXIV] A valve comprises a plug 13 mounted in a casing 10 which has a chamber 16 in which lubricant can be compressed by the fitting 40 to jack the plug and lubricate and form a seal between the surfaces of the plug and the casing. Grooves 36 in the casing register in the open and closed positions of the plug with grooves 37, 371 connected with grooves 38, 381 which in turn are connected to a helical groove 39 leading to the chamber 17. The plug 13 is connected to a segmental worm wheel 21 provided with abutments 41, 411 which engage the stop 42 to determine the open and closed positions. The plug is pressed on its seat by the resiliency of the cover 18, the thrust being transmitted through the thrust race 35 and is adjustable by the screw 33. The worm wheel 21 is engaged by a worm 22 mounted on a shaft 26 carried by bearings 54, 64 and connected by a coupling 67, 68, including a spring 76, to a shaft 27. The shaft 27 is tapered and fits in a tapered housing having recesses 77, 78 which can be supplied with lubricant under pressure through the fittings 82. This pressure is used to jack the shaft if necessary and to provide a seal. In a modification instead of the sealing surfaces of the shaft 27 being tapered they may comprise a collar upon the shaft. Fig. 6 shows a modification wherein the plug valve 213 and the operating spindle 233 are in line. A device 243 is employed for increasing the pressure of the lubricant in the space 245 for jacking the spindle 233 and supplying lubricant to the contacting surfaces. Grooves are formed in the surface of the spindle 233 and its housing and a lost motion connection is provided between the spindle 233 and the plug 213 so that during rotation of the spindle 233 lubricant under pressure is supplied to the chamber 224 to jack the plug 213 before rotation of the plug takes place.
Patent GB-460339-A (GB)
Title: Improvements in and relating to water heaters
IPC: F24H1/20
Filed: 1936-02-10
Abstract: 460,339. Heating water. GENERAL ELECTRIC CO., Ltd., and PEARSON, E. J. B. Feb. 10, 1936, No. 4019. [Class 64 (i)] In a water heater supplied from a feed cistern, the tank 1 is filled first to a low level for the quick heating of a small quantity of water, i.e. to the bottom of a vent pipe 4 with its top end 6 above the level of a feed cistern 5, and on operation of a valve 11 in a second vent pipe 10 at the top of the tank, the latter is entirely filled. Water enters slowly through a throttle 9 in a feed pipe 8 at a speed less than that at which it is withdrawn through an outlet pipe 12 with a valve 16. The tank has a thermostat 3 and preferably - an electric heater 2, both below the top of the outlet pipe 12.
Patent GB-1410231-A (GB)
Title: Bearings
IPC: F16C33/04
Filed: 1972-01-28
Abstract: 1410231 Bearings LUCAS INDUSTRIES Ltd 25 Jan 1973 [28 Jan 1972] 4087/72 Heading F2A A bearing having a liner 12 received within a housing 11, the liner having a bore for receiving a movable member 9, has projections on the liner which are located in recesses in the housing, the arrangement being such that in use differential thermal expansion of the housing and liner causes movement of the liner relative to the housing so as to control the clearance between the liner and movable member. Preferably the liner comprises a plurality of segments each having projections with mutually inclined surfaces which engage the surfaces of recesses in the housing. The liner may be of silicon nitride. The segments may be held against the housing by a spring loaded bolt 19.
Patent GB-734539-A (GB)
Title: Improved means for interrupting d.c. electric circuits
IPC: H01H33/59
Filed: 1953-02-13
Abstract: 734,539. Arc-rupturing in switches. ETABLISSEMENTS MERLIN & GERIN SOC. ANON. Feb. 13, 1953 [Feb. 22, 1952], No. 4142/53. Class 38 (5). The energy stored when opening a highlyinductive D.C. circuit is discharged across an auxiliary circuit by ionization of a gap between contacts b, c, by the main arc between contacts a, b, an insulating barrier 12 serving to keep the auxiliary arc away from the main arc. A resistor 6 reduces the current in the auxiliary arc and blow-out coils 8, 10 are provided for the respective arcs.
Patent GB-755101-A (GB)
Title: Flanged tubular structures and process for making them
IPC: B21D39/06
Filed: 1951-02-20
Abstract: 755,101. Composite casting. BLISS, J. J. Feb. 20, 1951, No. 4158/54. Class 83 (1). In order to connect a flange such as B to a tubular member such as A, an annular groove 7 is formed in one face of the flange to receive the end of the tube, and opposing circumferential grooves 10, 11 are formed in the mating surfaces of the tube and flange, a hot molten material being forced into the grooves to form a locking key on cooling. The base of groove 11 is preferably roughened and the cross-section of groove 10 may be rounded as shown to assist flow of the molten material. Diametrically-opposed holes 12 connect the groove 10, 11 to the outside of the flange. In making a spool, a tube A with a flange B on each end is placed on a bed 13, Fig. 7, having nozzles 14, 15 engaging the holes 12 and is clamped by a hydraulic jack 17. The parts to be joined are not pre-heated. Molten metal, fed to a pot 20 from a crucible 18 in which it is melted, is then forced by air pressure, controlled by a valve 25, through nozzle 14 to fill the grooves, air escaping from nozzle 15 until the second hole 12 is filled. The melting- point of the metal, its injection temperature and pressure, and the size of the grooves are adjusted so that the metal sets as soon as the grooves are quite filled. Alloy containing 84 per cent tin, 13 per cent copper and 3 per cent antimony, melting at 800‹ F., may be injected at 900‹ F. and sizes of grooves for different sizes of spools are given. For spools of aluminium or alloy thereof, an aluminium alloy may be used, and for spools of other metals, synthetic resin may be used. In. a modification the inner face of the tube may be machined at its ends to engage corresponding surfaces of the flanges. In another modification a number of injections are made simultaneously or successively through holes into the mating grooves.