baber/WOPTO huggingface dataset:
Patent GB-732841-A (GB)
Title: Improvements relating to electric induction apparatus
Inventor: MELVILLE WILLIAM SIMM
IPC: H01F27/08
Filed: 1952-08-22
Abstract: 732,841. Transformers and inductors. BRITISH THOMSON-HOUSTON CO., Ltd. July 30, 1953 [Aug. 22, 1952], No. 2II37/52. Class 38 (2). Electromagnetic induction apparatus having a laminated magnetic core 1-which may be in three sections 2, 3, 4-is provided with heatabsorbing non-magnetic members 7, 8, 9 in heatexchanging relation with the laminations thereof whereby to remove the heat generated in the laminations. The core sections 2, 3, 4 are constructed of wound magnetic strip having rectangular magnetic characteristics, the members 7, 8, 9 being of copper and placed in contact with the edges of the laminations. Heat is conducted to the member 13 also of copper and is dissipated therefrom by means of a coolant flowing in the troughs in members 18, 19 which are affixed to the member 13. This method of removing heat from the core is necessitated by the fact that the most efficient use of magnetic material having rectangular magnetic characteristics is made by arranging the windings 5 to surround the core. The core sections are clamped between members 15, 16 by means of bolts 17. In another embodiment the coolant is circulated through troughs in the members 7, 8, 9 ; in yet a further embodiment the core is surrounded by a heat-absorbing member, the heat absorbed being removed by means of lugs which project through the surrounding winding.
Patent GB-667042-A (GB)
Title: Improved engine corrosion preventive
Inventor: ADAMS WILLIAM HENRY
IPC: C09D5/08
Filed: 1949-08-15
Abstract: A corrosion-inhibiting composition comprises a wax-based corrosion preventative having incorporated therein minor proportions of a pour-point depressor of the type conventionally used with lubricating oils, preferably a Friedel-Crafts condensation product of a chlorinated paraffin wax and naphthalene, and a polyisoolefin, preferably polyisobutylene, of molecular weight between 20,000 and 200,000.  The wax component of the composition is preferably a microcrystalline wax melting in the range 135-210 DEG  F. and the composition may also comprise a volatile solvent, preferably a hydrocarbon solvent, in which the wax is sparingly soluble at room temperature and readily soluble when hot, which boils in the range 40-190 DEG  C., a lubricating oil and minor quantities of corrosion inhibitors, such as alkali metal and alkaline earth metal oil-soluble petroleum sulphonates, lanoline and wool-grease.
Patent GB-1432920-A (GB)
Title: Flash discharge lamps
IPC: H05B41/34
Filed: 1974-05-14
Abstract: 1432920 Laser RAYTHEON CO 14 May 1974 [14 May 1973] 21190/74 Heading H1C [Also in Division H2] A laser apparatus comprises one or more flash lamps 605 for stimulating the laser device 606 which may comprise a ruby rod, a glass rod doped with neodymium or yttrium-aluminiumgarnet, the flash lamp and the laser device being housed in an elliptical envelope 604 at the two foci thereof. The internal surface of the envelope is mirrored and the envelope may form the discharge initiating electrode of the flash lamp. The pulsed laser beam 612 is focused through a lens 613 on to a workpiece 614. Alternatively the flash tube may be in the form of a helix around the laser rod. The apparatus may be used for welding or drilling purposes.
Patent GB-871267-A (GB)
Title: Helicopter rotor correction mechanism
Inventor: EMMERSON JOHN OUTRAM
IPC: B64C27/615
Filed: 1959-06-19
Abstract: 871,267. Helicopters. KAMAN AIRCRAFT CORPORATION. June 19, 1959, No. 21198/59. Class 4. A helicopter comprises at least two blades each connected to a rotor drive shaft for movement about a substantially horizontal transverse axis, means for controlling the pitch of all the blades during flight, means carried by the rotor for adjusting the lift of a selected blade relatively to that of the other blade(s), and means in the fuselage for controlling the adjusting means in flight. Fig. 12 shows part of a three bladed rotor hub 152, each blade such as 160 being mounted through a pitch change bearing on a fork 166 pivoted on a flapping axis to a gimball member 164 pivoted on a drag axis 162 to an arm 158 of the hub. A pitch change arm 172 extends from the blade root, and has a cranked portion 174 which is forked at its free end, and a cylindrical member 180 extends across and is journalled in the fork. The member is recessed at 182, Fig. 14, and a rod 178 has one end pivoted within the recess on a pin 184 eccentric to the cylindrical member 180, and has the other end pivoted to a conventional swash plate 176. A crank arm 186 on member 180 is operable through link 188 by the output arm 190 of an electrical repeater unit 86 mounted on arm 172. This unit is controlled through slip rings on the rotor drive shaft, by an electrical transmitter unit under the control of the pilot. Conventional cyclic and collective pitch changes are applied to the blade through the swash plate 176, rod 178, and arm 172, pin 184 being held stationary relative to crank 174 by the output arm 190 of unit 86. If the pilot detects mismatching of the blades, by the resultant vibration or by observing the tip paths of the blades, which may have their tips painted different colours, the pilot may rotate a wheel on the transmitter unit corresponding to the mis-matched blade, producing a proportional rotation of arm 190. This sets pin 184 in a different position relative to crank 174, and thus alters the pitch of the blade for a given position of the swash plate, to correct the mis-matching. A limit switch operates a warning light visible to the pilot. All, or all but one of the blades, have such individual lift correcting means. An application is also described to a two bladed rotor as in Specification 676,398, in which the blades are connected to a hub through drag pivots associated with frictional damping means, the hub being pivoted to the drive shaft about a horizontal axis transverse but not perpendicular to the longitudinal axis of the blades. All pitch changes are effected by servo tabs on the blades causing torsional twisting of the blades about their longitudinal axes. A pair of intermeshing counter-rotating rotors is employed.
Patent GB-134111-A (GB)
Title: Clothes Airer.
Inventor: WALL HENRY PERCY
IPC: D06F57/12
Filed: 1918-12-19
Abstract: 134,111. Wall, H. P. Dec. 19, 1918. Clothes - frames. - A frame for drying clothes, constructed for attach.- ment to a wall or other support, consists of wooden arms A removably held between upper and lower wooden frame-pieces D, E by handtight dowels C passed through holes in the piece B and into recesses in the piece E. A back-piece F supports the pieces D, E and is drilled at G to receive nails or screws. Pieces H, I act to strengthen the frame. Metal hooks J are fixed to the underside of the piece E for suspending small articles.
Patent GB-1384163-A (GB)
Title: Method of preparing trans-1,4-polydienes
IPC: C08F136/06
Filed: 1972-05-06
Abstract: 1384163 Trans-14-polydienes VORONEZHSKY FILIAL VSESOJUZNOGO NAUCHNOISSLEDOVATELSKOGO INSTITUTA SINTETICHESKOGO KAUCHUKA IMENI AKADEMIKA S V LEBEDEVA 6 May 1972 21243/72 Heading C3P  Conjugated dienes are polymerized to give polymers containing predominately a trans 14 configuration using a catalyst comprising VCl 4 , T 1 Cl 4 , an organo Li compound and an alkyl aluminium compound and optionally an ether. The polymerization is preferably effected in a hydrocarbon solvent at 0 to 100‹C. In the examples butadiene and isoprene are homopolymerized in toluene, cyclohexane or isopentane using VCl 4 , TiCl 4 , one of n or sec butyl Li, tri Li polyisoprene, di Li polyisoprene, lithium polyisoprene or dilithium polybutadiene, one of triisobutyl Al or triethyl Al and in example (5) diisopropyl ether, (10) ligroine, (11) diphenyl oxide and (12) anisole.
Patent GB-182024-A (GB)
Title: Improvements relating to railway and like controlling apparatus
IPC: B61L23/24
Filed: 1921-08-11
Abstract: 182,024. Leake, F. W., and Tyer & Co., Ltd. Aug. 11, 1921. Staff, tablet, and ticket systems; signals for line. -In token systems for single-track railways, a suitably-mounted appliance indicates to the driver a diagrammatic representation of the correct token for the section. The signal post a. that carries the arm b also supports a frame d with a circular aperture containing a glass or other transparent disc f bearing a representation g of the token and a representation h of the mark on the token which is distinctive for the section. The disc may be illuminated for night working.
Patent GB-683760-A (GB)
Title: Improvements relating to metal faced rubber frames for framing and fixing a window pane in the opening therefor in the structure to be fitted with the window, and to methods of producing such frames
IPC: B60J10/02
Filed: 1951-09-11
Abstract: 683,760. Window frames; packing strips. PIRELLI SOC. PER AZIONI. Sept. 11, 1951 [Sept. 18, 1950], No. 21413/51. Class 20(iii) [Also in Group V] A rubber frame 1 for framing and securing a pane in a window opening, especially of a motor vehicle, has secured to its surface a metal facing strip 4, the strip being vulcanized on to the rubber during the operation of moulding and vulcanizing the frame in the mould (see Group V). In the form shown the frame 1 is made of oval cross-section, a groove 2 being provided for the glass and a groove 3 for engagement with the edge of the aperture to be glazed.
Patent GB-1374573-A (GB)
Title: Process for the improvement of cement
IPC: C04B28/02
Filed: 1973-05-07
Abstract: 1374573 Cement production SUDDEUTSCHE KALKSTICKSTOFF - WERKE AG 7 May 1973 [8 Nov 1972] 21548/73 Heading C1H An improved cement is produced by spraying continuously and substantially uniformly over the whole production period into the final fine grinding stage of a multistage grinding in a cement mill an aqueous solution of a melamineformaldehyde condensation product in an amount of 0À1 to 2 wt. per cent of the cement calculated as the dry condensate. The condensation product may be sulphite modified.
Patent GB-384696-A (GB)
Title: Improvements in or relating to rotary drums, for instance for rotary cooking boilers,
IPC: A47J37/04
Filed: 1931-07-28
Abstract: <PICT:0384696/III/1> A rotatable drum in cooking boilers &c. is coupled with its journals or trunnions by a universal joint to permit the respective axes to run a little out of line.  A rotary cooking drum 1 supplied with material for treatment in bulk and mounted within an outer boiler casing 2 carries disc mounts 13, 14 having central holes through which pass sleeves 9, 10 provided with ball-shaped or arched bearings 11, 12 for the drum and keyed respectively to a driving shaft 3 and journal 4 extending into the boiler.  A flange 15 integral with sleeve 9 and a flange 16 keyed thereto carry two driving rollers 17 which fit loosely into holes in the drum supporting disc 13 so that a small angular movement may take place between the rollers and drum.  Flanges 19, 20 on the journal 4 similarly carry rollers 18 fitting into holes in the disc 14. Rotation of the drum may be effected through a spur-wheel 22 keyed to the shaft 3.
Patent GB-1426421-A (GB)
Title: Apparatus for extracting the square root of a binary number
IPC: G06F7/552
Filed: 1974-05-16
Abstract: 1426421 Square rooting OFFICE DE RADIODIFFUSION-TELEVISION FRANCAISE 16 May 1974 [1 June 1973] 21752/74 Heading G4A The square root of a number in input register 1 (Fig. 1) is calculated in successive cycles by feeding the number two bits at a time to the inputs 62 1 , 62 0  of an adder 6 (initially set to zero) input 62 2 -62 n+2  receiving output signals 23 0 -23 n  from shift register 2 (initially set to all 1s), the other input 61 0 -61 n+2  to the adder being (1) 1, 1 for inputs 61 0 , 61 1  and (2) either the output of the adders 63 0 -63 n+2  of the previous cycle i shifted up by two places if the adder overflowed to feed a value r n-1  = 0 to shift register 2 or, if r n-1  = 0 the output of the adder at the cycle i - 1. A selector circuit 3 is controlled by the value of the adder overflow at output terminal 64 to connect to its outputs 33 0 -33 n+1  either its inputs 32 0 -32 n+1  from the adder or its input 31 0 -31 n+1  from (1) the two bits of the input signal (held in memory 4, 5) and (2) its outputs 33 0 -33 n-1 . To compute for example the square root of 36, i.e. 100100, input 61 0 -61 n+2  are initially all 1s and input 62 n+2  ... 62 0  are all zero except for 62 1 , receiving the 1 bit in memory 5. The adder overflows (i.e. R 2  = 1) resulting in a zero bit on output 23 0  of register 2 and the adder output 00001 being fed via selector 3 together with the next two bits 01 to form an input 00101 for the adder. The other adder input is 11011 resulting in a sum 00000 and an overflow (i.e. R 1  = 1) so that in the next cycle the input on terminal 61 is 10011 and the input on terminal 62 is 0000. Subsequently the adder does not overflow (i.e. R 0  = 0) so that the square root is 110 (held in complementary form in register 2 and transferred to results register 9) and any remainder is given by the signal at the inputs 31 4  ... 31 0  of selector circuit 3, i.e. 00000. Instead of a single input register there may be two registers one for even and one for odd digits.
Patent GB-870419-A (GB)
Title: Electrical apparatus for voltage control
IPC: G05F1/20
Filed: 1959-06-25
Abstract: 870,419. Automatic voltage-control systems. WESTINGHOUSE ELECTRIC CORPORATION. June 25, 1959 [July 14, 1958], No. 21810/59. Class 38 (4). In an automatic control system the voltage across a load is maintained constant bv semiconductor switching devices transferring the load from a first alternating voltage source to a second voltage source during the voltage cycle. As shown, a full-wave rectifier 60 supplying a load 20 is fed from an alternating current source 10, 12 via a transformer 50 and transistors 52, 62, 72, 82. Transistors 72, 82 are connected as shown between a tapping 24 on a secondary of the transformer 50 and a junction 90; the emitter-base bias for the transistors being derived from a transformer 70; diodes 92, 93 prevent reverse emitter-collector current. Transistors 52, 62 are connected as shown between a voltage tapping 94 on the transformer 50 and a junction 96. The delay in each half-cycle before the transistors conduct is determined by the emitter-base bias signals from pulse generators 200. When the transistor 52 or 62 conducts, transistor 72 or 82 is rendered non-conducting since the instantaneous polarity at junction 96 will be greater than that at tapping 24. The pulse generators 200 are responsive to the output of a zener-diode bridge 80 connected across the load 20, the pulse delay from the commencement of each half-cycle being dependent on the error voltage from the bridge. It is stated that by suitable circuit modifications an alternating voltage across a load may be controlled and that the supply may be derived from a three-phase system. The pulse generators may be controlled by an external signal.
Patent GB-336652-A (GB)
Title: Improvements in talking machines and the like
Filed: 1929-07-16
Abstract: 336,652. Columbia 6raphophone Co., Ltd., and Mitchell, F. A. July 16, 1929. Addition to 264,779. Coses. - The inlet sound conduit E of the gramophone claimed in the parent, Specification is arranged to discharge the sound into the mechanism chamber F, from which it is conveyed to an outlet F<1> on or above the level of the motorboard B. The motor M is mounted on the undersurface of a plate P which is adapted to be attached to the motorboard B constituting the upper member of the case A. The conduit E, which may be curved as shown in Fig. 2, may be of U-section and secured to the undersurface of the motorboard, or it may be formed by providing a dividing wall E<3>, Fig. 3, and a reflector F<2> in the case A. In another form, the conduit E may be supported beneath the motorboard without attachment to the same or to the case A, and be adapted to co-operate with reflectors F<2>, F<3>, as shown in Fig. 4. The outlet F<1> may be of grille type or be formed by a perforation in the rear end of the motorboard, and into this perforation the sound-box G may be folded when out of use. The outlet F' may, alternatively, be formed by locating the rear edge of the motorboard some distance from the back of the case and the sound is directed upwards into the lid, as shown in Fig. 5, The driving mechanism may be enclosed in the outlet section claimed in the parent Specification, and the inlet section may be wholly or in part enclosed in such section. The case A may be formed from a single piece of metal, as may also be the lid, and the motorboard may then be formed of wood. When the case is of wood, the motorboard may be of metal. One or more coats of paint may be provided inside or outside or on both such surfaces of the case and lid, or an external covering of leather. cloth, &c., may be provided. The Provisional Specification describes also the inlet conduit as being pivoted so that the sound-box and tone-arm may be lowered into the case, the movement of the lid being adapted to effect this operation.
Patent GB-951015-A (GB)
Title: Production of concrete of improved physical and chemical properties with the aid of plastics dispersions
Inventor: REINHARD HANS
IPC: C04B28/02
Filed: 1962-06-06
Abstract: Concretes are prepared by adding to the conventional mix, 0.5 to 50% by weight, based on the weight of cement, of a copolymer of 20-80% vinyl chloride and 80-20% of vinyl proprionate in the form of an aqueous dispersion or a redispersible powder 0.5-60% by weight, based on the copolymer, of hydrocarbons may also be added e.g. benzene, toluene, xylene, the higher boiling aliphatics and the terpenes.  The dispersing agent may be polyvinyl alcohol.
Patent GB-1510575-A (GB)
Title: Safety valve suitable for inflatable articles
IPC: F16K17/04
Filed: 1976-05-26
Abstract: 1510575 Valves BRIDGEPORT-BRASS SpA 26 May 1976 [30 June 1975] 21858/76 Heading F2V A safety valve for releasing excess pressure from inflatable articles, e.g. life rafts, has a housing element 2, e.g. of brass, coated or covered with rubber or like material suitable for vulcanizing to the inflatable article, and has a hinged metal closure element 10 normally biased against its seating 4 by a spring 4 or the like. A plastics cover 6 provides protection and has an outlet 6a. The cover can be secured in other angular positions relatively to the closure element to vary the flow rate of discharged gas. A wedge or rubber stopper can be inserted into the cover in the event of malfunction of the valve, to hold the element 10 closed and thereby prevent deflation of the article.
Patent GB-711556-A (GB)
Title: Improvements in machine for bending tubes, wire or strip material
Inventor: PAYNE ARTHUR WARD
IPC: B21D11/07
Filed: 1952-08-30
Abstract: 711,556. Angular bending. BUNDY TUBING CO. Aug. 30, 1952, No. 21860/52. Class 83 (4) In an apparatus for bending tubes, wire or strip into serpentine form tubes W are positioned against a stop 1 over an arbor 60 to an arm 37 and under an arbor 80 on a fixed frame and the arm 37 is swung to bend the tube by movement of bending pads. A plurality of, tubes are held in a clip on a loading bar 26 moved laterally by a fluid cylinder 28, Fig. 10 (not shown), to position the tubes between the mandrel 60 and pads 61, 65 and between the arbor 80 and pads 88, 90. Fluid is admitted to a cylinder 78 to swing a lever 76 secured to a sprocket 70 connected by a chain 72 to a sprocket 64. The sprocket 64 carries the bending pad 61. The pad 90 is fixed on a cam plate 91 with groove 92 engaged by a roller 79 on the arm 37 and is pivoted to a plate 94 engaged by a cam 97 on the arbor arm 81 which carries a surface 100 co-operating with a surface 101 on the cam plate 91. Movement of the sprocket moves the pad 61 to contact the tubes. Fluid is admitted to a clamp cylinder 110 and to a cylinder 87, Fig. 9, to rock the arbor 80 to the position in Fig. 5 (not shown), to clamp the tube against the abutment 88. The cam 97 engages the plate 94 to lock the pivoted connection 93. The arm 37 carrying the arbor 60 is made in two parts telescoped during the bending operation by a chain 50 wrapped upon a fixed member against the urge of springs 43 to allow for shortening of the tubes. To effect bending a fluid cylinder, Fig. 17 (not shown), is operated to rock the arm 17 through 180 degrees on axis 36. The arbor 60 is rotated and moved radially by the chain but the abutment is held stationary by the lever 75. The tubes are slightly overbent about the arbor 60. The roller 79 on the arm swings the pad 90 about the axis 93. After bending the parts are freed to allow removal of the tubes which can then be positioned on a pin 102 for further bending. An extra poweroperated sweep arm bender may be fitted.
Patent GB-257409-A (GB)
Title: Improvements in couplings for flexible pipes or hose
IPC: F16L33/01
Filed: 1925-09-01
Abstract: 257,409. Berryman, W. Sept. 1, 1925. Tapered spigot - and-socket joints.-The end of a coupling sleeve C for flexible pipes or hose is formed with a tapered annular slot B into which the end of the pipe is forced. The annular slot is preferably formed between the interior of the coupling sleeve and an inner ferrule D secured therein as by brazing, while the jointing means comprises a nut E engaging a metal band F which is screwed upon the hose.
Patent GB-1291183-A (GB)
Title: Enzyme production
IPC: C12Q1/32
Filed: 1970-05-06
Abstract: 1291183 Steroid dehydrogenase KYOWA HAKKO KOGYO KK 6 May 1970 [6 May 1969] 21909/70 Heading C3H [Also in Division C2] Steroid dehydrogenase is produced by culture of a microorganism of the species Brevibacterium sterolicum in a nutrient medium, and recovering the enzyme from the bacterial cells and or culture medium. The microorganism may be Brevibacterium sterolicum ATCC 21387. The nutrient medium may contain cholesterol. The enzyme can dehydrogenate the 3#-hydroxy group in a steroid (and also the 17#-hydroxy group, if such is present) e.g. cholesterol may be converted to cholesterone. The enzyme may be removed from the cell-free culture medium by salting out (e.g. with ammonium sulphate) or precipitation (e.g. with acetone), or may be extracted from the bacterial cells using ethyl acetate.
Patent GB-366034-A (GB)
Title: Improvements in fuel feed pumps
IPC: F02B1/00
Filed: 1930-07-22
Abstract: 366,034. Fuel pumps. FLINT, F. F., Elgin, Illinois, U.S.A. July 22, 1930, No. 22091. Convention date, July 22, 1929. Void [Published under Sect. 91 of the Acts]. [Class 102 (i).] A fuel feed-pump is arranged so that pumping ceases when a certain pres. sure has been reached. The pump comprises a casing 16 secured to the engine crank. case and containing a plun. ger 24, which is operated by one of the engine valve. cams against the action of a spring. The variations in air pressure in the cham ber 16 are communicated to a pumping chamber 17 through an orifice 26. The fuel is supplied by a pipe 20 through a filter 21 and a passage 19, controlled by a suction valve 28, carried by a float 27. The spindle of the suction-valve also carries a lower check-valve 29. The pump first acts as an ordinary pump, with suction valve 28 and discharge valve 37. When the level of the fuel rises the float 27 lifts the suction-valve off its seating. The pump then acts as an inertia. pump until the pressures in the chamber 17 and in an air vessel 18 balance. To prevent heating of the fuel the chambers 17, 18 are spaced from the engine crank-case and from one another and an insulating washer 44 is interposed between the chambers 17, 18 and the fuel chamber 22.