baber/WOPTO huggingface dataset:
Patent GB-793763-A (GB)
Title: Pulse delay circuit
IPC: H03K5/13
Filed: 1956-09-27
Abstract: 793,763. Pulse delaying circuits. EASTMAN KODAK CO. Sept. 27, 1956 [Sept. 28, 1955], No. 29481/56. Class 40 (6). In a circuit for producing from a single input pulse a pair of output pulses, one of which is delayed with respect to the other, the input pulse is amplified and applied to the primary winding of a transformer producing a positive and negative going pulse in the secondary winding thereof. Two load-circuits are connected in series with the secondary winding electronic switching means being associated with the load circuit so that the positive pulse induced in the secondary winding shorts one load circuit to produce an output pulse on the other and the negative-going pulse shorts the other load circuit to produce an output pulse on the first. The Figure shows a pulse delaying circuit in which an input pulse 11 produced from the generator 10 is amplified in stage 12 and applied to the primary winding of a transformer 14 so that a voltage 41, 40 is produced across this winding. The positive pulse corresponding to pulse 41 induced in the secondary winding of the transformer renders diode 30 conductive to short load resistor 33 so that an output pulse 42 is only produced on output lead 25. The negative-going pulse 40 shorts diode 20 so that a delayed output pulse 43 is produced only at the output lead 35. The output pulse 43 is delayed with respect to the pulse 42 by a time equal to the width of the input pulse 11. The amplitude and shape of the delayed pulse 43 is determined by the amount of energy stored in transformer 14 while the input pulse is applied and by the time constant determined by the inductance of transformer 14 and resistor 33. In a modification, Fig. 2, not shown, the width of the non-delayed output pulse is increased by feeding it back to the input amplifier stage 12 which acts as a limiter stage remaining saturated until the reduction in amplitude of the output pulse 42 reaches a predetermined level.
Patent GB-1255910-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D34/03
Filed: 1968-11-27
Abstract: 1,255,910. Mowers. TEXAS INDUSTRIES Inc. 27 Nov., 1968 [4 Dec., 1967]; No. 29543/ 71. Divided out of 1,255,163. Heading A1F. Three reciprocating blade mowers 1, 3 are each mounted via their single central supports on tractor 1 at the front and both sides respectively. Each mower, Fig. 2, comprises a transverse horizontal beam 5 carrying on its ends, beams 6 inclined forwardly downwards and mounting between them a generally horizontal flat strip 7 which carries swath boards 30. Co-operating cutter bars 8, 9 are mounted between upper and lower guides 7A and are pressed together by upper and lower pivoted fingers 10, 11. The cutter bars are reciprocated in opposite senses along their length by rockers 27, 28 driven by reciprocating rods 26 bearing against cams 24 on rotating shaft 17. Shaft 17 extends the full width of the mower and drives chains 15 carrying crop dividing blades 18. A reel may be provided above the cutter bars. Each mower is supported by bearing 32 in which stub shaft 31 rigidly connected to beam 5 may rotate to follow ground irregularities. The bearing 32 of the front mower is fixed to frame 33 pivoted to the tractor and drive to shaft 17 is obtained through bevel gears 21, 22, chain 36 and universally jointed telescopic shaft 38 from shaft 40. The bearing 32 of each side mower is fixed to one end of an arm 44 which is pivotally mounted at the other end by pin 46 to arched support frame (63). Hydraulic rams 62 connected from the centre of the support frame (63) to lugs on the arms 44 enable the side mowers to be raised to a vertical position. The side mowers are driven via chains 55, 52, 49 from a selector box 59 by which drive from the tractor motor 41 can be directed to any or all of the mowers.
Patent GB-1087308-A (GB)
Title: Metal forming
IPC: B21C9/02
Filed: 1965-07-13
Abstract: 1,087,308. Drawing; extruding; forging. FMC CORPORATION. July 13, 1965 [July 31, 1964], No. 29554/65. Headings B3H and B3P. A steel workpiece, before being cold-worked by extrusion, stamping, or drawing, is coated with barium ferrate at a rate of 0À01-10 gms., and preferably 0À05-2À5 gms., per square foot. The coating is conveniently applied electrolytically with the workpiece seiving as an anode in a barium hydroxide solution. In an example, a billet of A151 304-L stainless steel was coated in a IN, Ba(OH) 2  bath after acid cleaning, a current of 4À5 v. at 150 amps/ft<SP>2</SP> being used for 30 mins. at 95‹ C. Backward extrusion at 359,000 p.s.i. followed. A similar billet coated with a conventional oxalate coating required an extrusion pressure of 384,000 p.s.i., resulting in a surface finish slightly inferior to that of the first billet.
Patent GB-605891-A (GB)
Title: Improvements in and relating to the suspension of electric conductors
IPC: H01B17/22
Filed: 1945-11-07
Abstract: 605,891. Suspending cables. COMMUNICATIONS PATENTS, Ltd., HUGHES, L. E. C., and ROSCOE, R. V. Nov. 7, 1945, No. 29636. [Classes 36 and 38 (i)] A suspension arrangement for a coaxial cable having a wire braid covering consists of disposing a portion of the cable in a cavity in an anchoring device and loading the cavity with a substance that sets hard and grips the braid. The anchoring device may consist of a member 6 with a cap portion 7, beneath which is a hollow chamber 8. Passageways 12 are provided between the exterior of the body and a well 13, each of which has a cavity 15 opening into it and extending beyond it. When a cable 17 is in position the appropriate cavity 15 is filled with hardening substance 18. Connections may be made within the well 13 between the ends of the conductior 20. Tappings may be made by means of conductor 22, for which purpose passages 16 may be provided. The cap 7 screws down on to a gasket ring 23.
Patent GB-1115951-A (GB)
Title: Improvements in or relating to apparatus incorporating electrical heating elements and processes involving the use of such apparatus
Inventor: SUTTON RICHARD PETER
IPC: H05B3/32
Filed: 1965-07-13
Abstract: A heating element of tungsten carbide sintered without the use of a binder is used as a susceptor in the RF induction heating process for the epitaxial growth of a crystal of silicon carbide incorporating a p-n junction.  The apparatus is also used for the epitaxial growth of a crystal of silicon. The heating element supports a substrate of n-type SiC which is exposed to a mixture of hydrogen and vapours of trichlorosilane, boron trichloride and hydrocarbon such as hexane or benzene to deposit p-type SiC.  With a silicon substrate the reaction mixture is trichlorosilane and hydrogen.  The tungsten carbide heating element is alternatively used as a resistance heater in a thin alloy zone re-crystallisation process (see Division B1).ALSO:<PICT:1115951/C1/1> A susceptor or resistor of unbonded sintered tungsten carbide is made by heating a mixture of pure carbon and tungsten powders to 2800 DEG  C. in a graphite vessel, powdering the nodules of WC produced and then heating in a graphite mould to 2000 DEG  C. under a pressure of up to 5 tons per sq. inch to effect sintering. The heating element is then cleaned with a solution of potassium dichromate in orthophosphoric acid to remove any carbon from the mould.  A susceptor 3 made as above is used in the epitaxial growth of a single crystal of silicon carbide incorporating a P-N junction. The susceptor 3 supports a substrate of N-type SiC in a recess 25 and it is exposed to a mixture of hydrogen, trichlorosilane vapour, boron trichloride vapour and a hydrocarbon vapour such as hexane or benzene while heating the susceptor to 1450-2000 DEG  C. by R.F. induction heating to deposit P-type SiC.  The same apparatus is used in the epitaxial growth of a crystal of silicon, crystalline silicon being deposited on a silicon crystal substrate from a reaction mixture of trichlorosilane and hydrogen while heating the susceptor to 1200 DEG  or 1300 DEG  C.  The silicon may be "doped" if desired.
Patent GB-307524-A (GB)
Title: Improvements in the manufacture and production of anhydrous metallic chlorides
IPC: C01G1/06
Filed: 1927-11-07
Abstract: 307,524. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Nov. 7, 1927. Aluminium and other metallic chlorides.-The production of anhydrous metallic chlorides by treating metallic oxides with carbon monoxide and chlorine is carried out by first passing the gas mixture over a catalyst such as animal charcoal which promotes the formation of phosgene, and the reacting materials are protected against loss of heat, as by effecting the reaction in an insulated shaft furnace, so that heat need be supplied only for starting the reaction. By mixing the initial material with coal and using a sufficiently high temperature for the reaction, carbon monoxide for further use in the process may be recovered from the issuing gases. Examples relate to the production of aluminium chloride from kaolin, or from a mixture of bauxite with coke; in the former case the process is carried out continuously in a shaft furnace, the gas mixture being supplied in countercurrent to the solid material.
Patent GB-192777-A (GB)
Title: Securing means for trunks and the like
IPC: E05B65/52
Filed: 1921-11-08
Abstract: 192,777. Ritter, E. Nov. 8, 1921. No Patent granted (Sealing fee not paid). Tampering with, preventing. - Means for covering and preventing access to the locks of trunks &c. comprise bands such as 3, Fig. 1, fitted with shields 4 adapted to cover the locks, the bands being secured to the shields by the stud and key-hole slot arrangement shown in Fig. 4. The free end of one band is passed through an eye 6, Fig. 2, on the end of the other and doubled on itself, a padlock being then placed on a staple 15 passed through holes in the first band and the doubled end. The bands may comprise a series of hinged portions, Fig. 6, to ensure a good fit at the corners of the trunk. When a trunk is without ribs or battens 2, Fig. 1, the bands may be connected to a third band passing horizontally around the trunk.
Patent GB-971937-A (GB)
Title: Improvements in or relating to liquid dispensing pumps
Inventor: ADAMS RICHARD
IPC: F16N13/08
Filed: 1963-07-26
Abstract: 971,937. Reciprocating pumps. CASTROL Ltd. July 26, 1963, No. 29836/63. Addition to 844,130. Heading F1A. A bucket piston 25 is loaded by a spring 30 and carries a valve member 36 which seals the inlet 22 when the piston is in its lower position. The piston is actuated by a lever 49 through a rack and pinion 31, 41, the upward movement of the rack being limited by a stop 38. The piston delivers to an outlet chamber 57 having a spring loaded valve 59 seating on a shoulder 58 and controlling an outlet nozzle 67 comprising capillary apertures 68. Closing movement of the valve 59 withdraws liquid into the apertures 68 to prevent drip. A U-shaped wall 69 is provided with a flange 70 to receive and support a container to be filled by the pump. The lever shaft 40 may have a pointer indicating discharge quantity on a scale and may drive a totalisation. A lug 74 on the lever 49 may be used to lock the lever.
Patent GB-401488-A (GB)
Title: Improvements in and relating to electrical measuring circuits and apparatus therefor
IPC: G01R27/26
Filed: 1932-10-26
Abstract: 401,488. Phase difference measurements ; electrostatic meters. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, BRAY, G. R. R., 86, Dunchurch Road, and WILKINSON, K. J. R., 16, Vernon Avenue, Hilhnorton Paddox, both in Rugby. Oct. 26, 1932, No. 30015. [Class 37.] An electrical circuit for determining whether the alternating potential differences between three or more points are in phase comprises an electrometer 1 having its fixed electrodes A<1>, B<1> excited to alternating potentials such that upon connection of two of the points O, P in succession to the movable electrode X a null response is obtained, and such that if the potential differences between each of the points O, P and a third point Q are in the same phase, a null response is also obtained on connecting the point Q to the movable electrode. The arrangement is applicable to the measurement of the power factor or loss angle of samples of insulating material, the sample to be tested being used to make up a condenser 4 in series with a standard condenser 5 and resistance 6, one or both of the latter being variable. In one arrangement, Fig. 1, the voltage for the fixed electrodes is obtained by a bridge circuit made up of resistances 8, 9 and condensers 10, 11, all of equal impedance, connected as shown across the points O, P. On connecting these points successively to the movable electrode X a null response should be obtained. The electrode X is then connected to the point Q, and the power factor of the branch Q P is adjusted until the electrometer again gives a null response ; the power factor of the condenser 4 is then equal to that of the branch Q P. In a modification, Fig. 3, the voltage of the fixed electrodes A<1>, B<1> is obtained from the secondary winding of a mutual inductance M in series with a resistance R, the series circuits 4, 5, 6 being connected across the resistance, as shown. Vector diagrams for the two arrangements are given. The electrometer may be a quadrant electrometer, or an electroscope of the form shown in Fig. 5 may be used. This electroscope comprises adjustable electrodes 12, 13, with a gold leaf 16 suspended symmetrically between them and supported by an adjusting screw 17 mounted in a metal case 18. The case may be adjusted horizontally on the base 19 by means of another adjusting screw 20.
Patent GB-1074988-A (GB)
Title: Valves particularly for braking systems
IPC: B60T15/04
Filed: 1965-07-15
Abstract: 1,074,988. Valves; brake valves. FABBRICA ITALIANA MAGNETI S.p.A. July 15, 1965 [July 15, 1964; March 24, 1965], No. 30052/65. Headings F2F and F2V. The combined inlet and exhaust valve comprises a hollow valve member 24 carrying a sealing ring 30 held by a sleeve 34 and co-operating with a shaped sealing surface on a flange 20 of a fixed sloeve 22, these parts constituting the inlet valve. The exhaust valve is constituted by a closure crown 26 on the valve member co-operating with a disc seal 50 forming part of an actuating piston 46. In a vehicle pressure braking system this piston may be moved through a rocker (70), Fig. 1 (not shown). In the servo-auto-distributer shown, the pressure in the automatic braking conduit at 55 is connected, in idling condition, through a chamber D and an open valve 66 positioned in a second piston 56, to a chamber C. Piston 56 is held up by a spring 57. The pressure in chamber C is delivered through a passage 96, control valve 78, 79, conduit 94 and outlet 92 to the trailer tank. If the distributer on the vehicle is operated, air is delivered at 45 into a chamber F to move piston 46 and close the exhaust valve 26, 50. The inlet valve 28, 20 is opened and connects the trailer tank to the brakes through chambers A and G and manifold outlets (102), Fig. 5 (not shown). When the action on the distributer ceases, chamber F is connected to atmosphere and piston 46 again lifted. During emergency braking, effected by discharging the pressure in an automatic braking pipe connected at 55, valve 66 closes and depression of piston 56, operates the piston 46 through a stem 54 to apply the brakes. This also results if the trailer is disconnected, the brakes being subsequently released by moving the control valve to the left to isolate the trailer tank from chamber B and vent the latter to atmosphere at 95. Meanwhile equal pressures are established in chambers C and D and the device returns to initial position, G being vented to render the trailer brakes inoperative. The control valve may be maintained in the corresponding position by disengaging a part 91 and re-engaging it with a cap 88.
Patent GB-1112902-A (GB)
Title: Improvements in or relating to electric conductors suitable for being sealed in the wall of an electric discharge tube
IPC: C03C27/04
Filed: 1965-07-15
Abstract: An electric conductor 1, 2, 3, to be sealed in the wall 6 and/or 7 of an electric discharge tube of glass having an expansion coefficient of less than 75 x 10-7, comprises an inner body 1 of a glass of similar expansion coefficient coated with a thin layer 2 of noble metal and surrounded by a glass outer body 3 also of similar expansion coefficient, the inner side of the body 3 being sealed to the metal layer 2 and to the inner body 1 through the pores of the metal and the outer side of the body 3 being adapted to be sealed to the walls 6, 7, <PICT:1112902/C1/1> the thickness of the conductive metal layer being less than 1m  and the length of the sealed-in conductor being about 2 mm. or substantially equal to the thickness of the discharge tube wall 6, 7.  Preferably the thickness of the metal layer is about 0.1m  and the coating may be in one or more separate thin strips.  Gold, platinum or iridium are the suggested metals. The inner body 1 may be large enough to form the picture area of the window or, as shown, may be at one side of a window 6.  A tin oxide layer 9 and lead oxide layer 10 are connected by the layer 2 to a current supply conductor 12 via a conductive paste 11.
Patent GB-1253486-A (GB)
Title: Dihydrobenzazepine derivatives
Inventor: FOUCHE JEAN
IPC: A01N47/18
Filed: 1970-06-22
Abstract: 1,253,486. Dibenzazepines. RHONE-POULENC S.A. 22 June, 1970 [24 June, 1969; 9 April, 1970], No. 30074/70. Heading C2C. Novel compounds of Formula I: (in which R is H or C 1-5  alkyl and R 1  is C 1-7  alkyl) are prepared by reacting a compound of Formula II: with a compound of formula Cl.CO.OR 1 . Compounds of Formula II are prepared by hydrolysing a 5 - R - 10 - methoxy - dibenz- [b,f]azepine to form a 5-R-10-oxo-10,11-dihydrodibenz[b,f]azepine, reacting this with hydroxylamine to form a 5-R-10-hydroxyimino-10,11- dihydrodibenz[b,f]azepine and reducing this oxime. 5 - (C 1-5  alkyl) - 10 - methoxy - dibenz[b,f]- azepines are prepared by alkylating 10-methoxydibenz[b,f]azepine. Fungicidal compositions comprise a compound of Formula I together with an agricultural carrier. The compositions may contain known pesticides.
Patent GB-785310-A (GB)
Title: Pipe couplings
Inventor: SEAMARK LEWIS MERVYN CECIL
IPC: F16L23/08
Filed: 1954-10-20
Abstract: 785,310. Pipe couplings. PIDCO, Ltd. Oct. 17, 1955 [Oct. 20, 1954 ; Nov. 8, 1954], Nos. 30277/54 and 32324/54. Class 99(1). The ends of two pipes are coupled by a sleeve 7, Fig. 1, having recesses which receive, in a bayonet-joint manner, projections 6 on sleeves 1 fixed to the ends of the pipe. In Fig. 1 the projections 6 are formed on sleeves 1 having teeth 5 to grip the pipes when the sleeves, which are split at one point, are tightened up by nut and bolt means. A packing ring 12 is held in a recess 11 by an internal rib on the sleeve 7 which is provided with a boss 15 for engagement by a tool to rotate the sleeve during making or unmaking of the joint. A set screw 16 locks the sleeve in its final position when the joint is made. In a modification the sleeve 1 is provided, in place of the teeth 5, with a projection on its interior engaging a recess in the pipe and in a further modifications the sleeve is screwthreaded on to the pipe or welded thereon.
Patent GB-1521511-A (GB)
Title: Production of hydrogen fluoride and alkali metal or alkaline earth metal sulphate
IPC: C01F11/46
Filed: 1975-07-21
Abstract: 1521511 Hydrofluoric acid and calcium sulphate BAYER AG 21 July 1975 [24 July 1974] 30386/75 Heading C1A Hydrofluoric acid and an alkali metal or alkaline earth metal sulphate are produced by introducing a fluoride at 400-800 C. and sulphuric acid and/or SO 3  at 80-200 C. separately into a reaction zone in which a preliminary reaction product having a temperature of 100-200 C. is formed and circulated and the preliminary reaction product is then thermally decomposed at 100-500 C. in a post-reaction zone. The preliminary reaction product should be kept at 100-200 C. in the preliminary reaction zone. About 50-100% of the quantity of sulphuric acid required for the whole reaction is generally added during the preliminary reaction, using preferably 75-95% H 2 SO 4 . The preferred fluoride is fluorspar. The average residence time in the preliminary reactor is generally 3-20 minutes. The required preliminary reaction temperature of 100-200 C. may be regulated by the addition of exothermic substances with reaction components such as CaO, to the sulphuric acid. The process according to the invention reduces the formation of CaSO 4  dust and CaF 2  dust, and lumping and caking of the reaction mixture.
Patent GB-480811-A (GB)
Title: Means for adjusting electric lamps
IPC: G01M11/06
Filed: 1936-11-07
Abstract: 480,811. Optical testing &c. apparatus. CHANCE BROS. & CO., Ltd., and HAMPTON, W. M. Nov. 7, 1936, No. 30396. [Class 97 (i)] For observing the adjustment of a lamp a in relation to its reflector or lamp-holder the viewing device shown is detachably secured, by the groove l and spring m to two rods b forming part of the reflector or lamp-holder. The filament a<1> is observed from two mutually perpendicular directions simultaneously by means of the eyepiece comprising two lenses k, the lenses i, the prisms d, e, and the prism h which reflects into the field of view light from the prism e while that from the prism d is undeviated. The lamp is adjusted until both images coincide with the cross-wires of the eyepiece.
Patent GB-468681-A (GB)
Title: Improvements in or relating to the production of synthetic resins from phenols and formaldehyde
IPC: C08G8/28
Filed: 1935-11-04
Abstract: Fusible, oil-soluble phenol - aldehyde condensation products are prepared by condensing a homologue of phenol, with or without the addition of phenol, with formaldehyde in the presence of a terpene hydrocarbon such as dipentene and in the presence if desired of natural resins or esters thereof.  An acid catalyst such as hydrochloric acid may be present.  In examples: (1) commercial cresol is condensed with aqueous formaldehyde in the presence or absence of hydrochloric acid and in the presence of dipentene; (3) p-cresol is condensed with aqueous formaldehyde and dipentene in the presence of hydrochloric acid or zinc acetate; (5) phenol, p-tert-amyl- (or butyl-) phenol, dipentene and aqueous formaldehyde are condensed in the presence of zinc acetate; (7) p-tert-amylphenol, dipentene and aqueous formaldehyde are condensed in the presence of zinc acetate. Any of the examples may be carried out in the presence of a natural resin ester or a natural resin followed by treatment with glycerol.