baber/WOPTO huggingface dataset:
Patent GB-1131536-A (GB)
Title: Solid state electric power controllers
Inventor: BROWN HARRY WILLIAM
IPC: H02P25/14
Filed: 1967-07-14
Abstract: 1,131,536. Semi-conductor switching circuits. CUTLER-HAMMER Inc. 14 July, 1967 [14 July, 1966], No. 32577/67. Heading H3T. [Also in Divisions H1 and H2] In a portable tool, a first amount of depression of a trigger switch 6 against the force of spring 10 to bridge contacts 24, 26 by contact 16 starts an A.C. motor A at a low speed, the motor circuit being completed through a delay network comprising resistors 30, 32, shunted by resistor 34, and elements 38, 42, shunted by capacitor 36. Further depression of the trigger causes contact 18 to reduce the resistance in circuit until the voltage across capacitor 42 is sufficient to effect breakdown of a trigger diode 40. The capacitor 42 then discharges into the gate of a Quadrac Q which fires and remains conductive for the remainder of the half-cycle of supply voltage, at the end of which the delay network is reset. As the trigger 6 is advanced, the firing point of the Quadrac is moved forward to accelerate the motor. The motor is connected directly to the power source and the Quadrac is shunted from the circuit when contact 16 bridges the contacts 24, 28. The Quadrac is soldered to a heat sink at a point between two terminal boards of the printed circuit type, the heat sink forming a terminal for the Quadrac. The trigger diode is soldered to the upper surface foil of one of the boards. The contacts 24, 26, 28, are mounted on a plate which also carries resistance strips 30, 32, the contact 24 being in the form of a strip whilst contacts 26, 28, are formed as flat-head rivets. Bridging contact 16 is made of solid copper associated with compression spring 20, the contact 18 being a thin strip of bronze biased by spring 22. An arc barrier closes the space between the switch contacts and resistor strips, all the control elements being mounted on a common base. The Quadrac has PNPN structures between main electrodes H and C, each of which are in contact with both a P and an N layer. The trigger electrode T is in contact with both a P and an N layer to initiate conduction in either direction between the main electrodes.
Patent GB-722590-A (GB)
Title: Improvements relating to diphenyl methane derivatives
Filed: 1952-12-23
Abstract: The invention comprises 2,21-dihydroxydiphenyl methanes of formula <FORM:0722590/IV (b)/1> wherein in each ring "Hal" represents halogen, one X represents hydrogen and the other X represents halogen.  The compounds are prepared by condensing 4-halogen-1-hydroxybenzenes, the 2- and 6-positions of which are free and which are further substituted in one of the 3- and 5-positions by a halogen atom, with formaldehyde or agents giving off formaldehyde (e.g. concentrated aqueous formaldehyde or paraformaldehyde). Suitable starting materials are 3,4-dichloro-, 3,4-dibromo-, 3-chloro-4 - bromo - and 3 - bromo - 4 - chloro - 1 - hydroxybenzene, and the condensation of these phenols is carried out, for example, in concentrated sulphuric acid in the presence or absence of organic solvents or diluents such as low molecular weight alcohols (e.g. methanol) or glacial acetic acid.  The examples describe the preparation of 4,5,41,51-tetrachloro-, 5,6,51,61-tetrachloro- and 4,5,51,61-tetrachloro-2,21-dihydroxy-diphenyl methane.ALSO:Aqueous or organic solutions or dispersions of 2, 21-dihydroxydiphenyl methane compounds of the general formula: <FORM:0722590/VI/1> wherein in each ring "Hal" represents halogen, one X represents hydrogen and the other X represents halogen, are of use as disinfectants and can be incorporated in cleaning agents, ointment bases, tooth pastes and creams.
Patent GB-305320-A (GB)
Title: Improvements in and relating to amusement devices
IPC: A63G11/00
Filed: 1927-12-03
Abstract: 305,320. Ambrose, S. P. Dec. 3, 1927. Roundabouts. - In a see-saw roundabout the users operate levers actuating cranks which, through bevel or plain gear wheels rotate the device; the device oscillates vertically at the same time since rollers on the see-saw move over an undulating circular track. The beam 17 is attached to a platform 7 pivoted at 8 to a vertical shaft 5 which is mounted in a base 2 and carries a horizontal bearing for a shaft 10. A ring gear 14 on the base 2 meshes with a wheel 13 loose on shaft 10 over a wheel 11 keyed to shaft 10; cranks 15 with pins 16 on the shaft 10 are rotated by rods 30 and lever frames 25 pivoted at 27 to the see-saw beam. As the levers 25 and gear 11, 14 rotate the device, wheels 24 carried by the beam 17 move over an undulating circular track 3 on the base 2 so that the see-saw is moved up and down. In a modification the shaft 5 and its bearing are replaced by a ball-andsocket joints and the drive is through plain gear wheels.
Patent GB-1473024-A (GB)
Title: Process for the continuous preparation of trimethylol-alkane  allyl ethers
IPC: C07C41/00
Filed: 1975-08-05
Abstract: 1473024 Trimethylolalkane ethers BAYER AG 5 Aug 1975 [6 Aug 1974] 32690/75 Heading C2C Allyl ethers of the formula where X is 0 or 1 and n is 1, 2, or 3, are produced by the continuous etherification of a trimethylolalkane with allyl chloride under an inert atmosphere in the presence of an aqueous sodium hydroxide solution; the method comprises initially introducing the ether to be produced into at least two reaction chambers arranged in series, and introducing continuously, whilst stirring, the trimethylolalkane, 1À05-1À3 moles sodium hydroxide in a 40-50% aqueous solution and 1À0-1À2 moles of allyl chloride per mole of hydroxyl group to be etherified, to produce such concentrations that sodium salts of the trimethylolalkane do not precipitate, keeping the system at 80-130‹ C., and introducing continuously 0À5-1À7 parts by weight toluene relative to 1 part by weight of the sodium hydroxide, whilst azeotropically distilling off the water, to give a conversion of trimethylolalkane exceeding 99%. The process may be carried out in a stirred kettle cascade, the starting materials being fed to the first reaction chamber; part of the allyl chloride may be fed to the second chamber. The products may be used for the preparation of air-drying synthetic resins.
Patent GB-538513-A (GB)
Title: Improved method of dissolving hard and difficultly soluble resins
IPC: C09F1/04
Filed: 1939-12-21
Abstract: 538,513. Dissolving resins. SVENSSON, O. Dec. 21, 1939, No. 32705. Convention date, Dec. 21, 1938. [Class 95] A method of dissolving hard and difficultly soluble resins, such as Bengusla, Zanzibar, Mozambique and Congo resins, comprises preparing a mixture of the finely divided resin, a suitable solvent, and a catalyst consisting of a metallic oxide, and then subjecting the mixture to an oxidizing process. Hydrogen peroxide is the preferred oxidizing agent. Specified catalytic oxides are those of manganese, vanadium, silver, platinum, nickel and cobalt, and specified solvents are ethyl alcohol, butyl alcohol, ether, acetone, esters, hydrocarbons, ketones, and mixtures thereof. According to the Specification as open to inspection under Sect. 91, metallic salts or metals may be used as catalysts, or no catalyst need be present. This subject-matter does not appear in the Specification as accepted.
Patent GB-273968-A (GB)
Title: Improvements in boots
IPC: A43B3/02
Filed: 1926-12-28
Abstract: 273,968. Clark, A., and Clark, Ltd., C. & J. Dec. 28, 1926. Top boots consist of a shoe 1 having a leather upper 4 to which is sewn an ankle and leg portion 7 formed of fabric knitted by hand or on a c i r c u l a r knitting machine or a flat knitting machine so as to be either seamless or have only one seam at the back. The portion 7 may be shaped to fit the leg and provided with a turned down portion 9 formed in one with the leg portion or attached thereto. The back of the shoe may be extended into a strengthening tab 8 to which the part 7 is also sewn. The leg portion may be made of silk, cotton or wool or a combination of these. Reference has been directed by the Comptroller to Specifications 259,273 and 262,331.
Patent GB-254254-A (GB)
Title: Improvements in or relating to devices for dyeing or similarly treating materials with liquids
IPC: D06B5/00
Filed: 1925-12-29
Abstract: 254,254. Hartig, C. H. June 27, 1925, [Convention date]. Agitating materials and liquids together.-An apparatus for dyeing materials, particularly stockings, comprises an oval tank 1 having a central wall 15 arranged to form a circulation channel, and members 10 for advancing the materials. Perforated side walls 3 and false bottom 2 are provided, and the bath may be steam heated.
Patent GB-522475-A (GB)
Title: Improvements in the manufacture of nitrided steel articles
IPC: C23C8/02
Filed: 1938-11-12
Abstract: 522,475. Nitrided steel articles. BRISTOL AEROPLANE CO., Ltd., GADD, E. R., and KEATES, H. Nov. 12, 1938, No. 32948. [Class 41] Articles made of austenitic steel and intended to be casehardened by a nitriding process are treated after finishing and prior to nitriding, firstly by anodic etching in an electrolytic bath to replace the resistant oxide film and work-hardened surface by a passive oxide film, and then by cathodic etching to remove the passive film. The invention is described with reference to the treatment of an internal combustion engine sleeve-valve 10 which is supported in a bath 14 by hooks 11, a leaden electrode 15 being supported within it by an insulating bracket 16 bolted to the transmission lug 18 which serves also for the connection 19, the sleeve being flanked externally by plate-electrodes 20 also of lead. The bath consists either of potassium bichromate (1 to 3 per cent.) or glycerol (one twentieth of an ounce per gallon) in dilute-sulphuric acid of 30 to 40 per cent. concentration, and a current of from 0.5 to one ampere per square inch of etched surface is used. The anodic etching is performed with the connections as shown for from four to eight minutes, after which a change-over switch is operated to reverse the current, the cathode etching then taking place for from one to three minutes. After the etching process the parts not to be nitrided are nickel plated and in some circumstances those to be nitrided are first copper-plated. It is stated that the nitriding process can be effected on articles treated as described at a temperature as low as 550‹C. Specifications 228,278, 305,036, [both in Class 41], and 377,244 are referred to,
Patent GB-629823-A (GB)
Title: Improved device for the sealing of joints
IPC: F16L23/16
Filed: 1947-12-15
Abstract: 629,823. Tools for applying cements. FURMANITE ENGINEERING CO. (1929), Ltd., and JAGER, B. M. Dec. 15, 1947, No. 32961. [Class 61(ii)] [Also in Groups XXVI and XXVIII] A nipple 7 is formed with an axially extending threaded hole 7b, blanked off at one end by removable means such as a set screw 8, or a disc 15 sprung into an annular groove 7c, and engaging a bolt 9 passing through flanges 11, 12 of a pipe joint, connecting at an angle with a threaded hole 7a to receive a pressure ram 1, whereby a plastic sealing-medium may be forced between the flanges.
Patent GB-1029467-A (GB)
Title: An automatic exposure adjusting device in cine cameras
IPC: G03B7/085
Filed: 1964-08-14
Abstract: 1,029,467. Cine cameras; exposure control. K.K.NIPPON KOGAKU. Aug 14,1964 [Oct 25, 1963, No. 33235/64 Headings G2A and G2E. In a cine camera the exposure aperture is set by a galvanometer 11 which is actuated by the pulsating D.C. current from a photo-resistor 15, and by a super imposed A.C.current from an alternator 3 driven by an electric or clockwork motor 1 which also drives the film transport and shutter mechanism. A half-wave rectifier 16 in series with the photo-resistor 15 provides the D.C.current, or a full-wave rectifier fed through a transformer may be used. The value of the A.C.signal is decided by the value of resistor 17. A smooth and more sensitive response of galvanometer 11 is achieved by this circuit. Pointer 13 of the galvanometer is viewed in window 14.
Patent GB-190895-A (GB)
Title: Driving and steering axles for motor vehicles
IPC: B60K17/30
Filed: 1921-12-10
Abstract: 190,895. Batenburg, P. J. F. Dec. 10, 1921. Deflectable axle-ends.-In a driving and steering axle comprising a main axle housing and stub axle pivoted together in line with the universal joint in the driving axle, the pivot comprises bearings which ride on trunnions, are mounted on the outer members of the housings, and project inwardly to engage the inner members. The bearings and trunnions can be removed without disassembling the axle parts, and the interengaging walls of the housing are of ellipsoidal or like shape. The main-axle housing 14 has an ellipsoidal inner surface 19 engaging a similar surface on the outer wall of the stub axle 15, a retaining member 16 being secured to the housing 14 by axially-arranged bolts. The housings are provided with vertical apertures in which the trunnions 17 are secured by means of bolts 46, bearing-bushes 48 being provided; adjustment is effected by means of removable shims 52. The end of the stub axle may enclose the main axle and be provided with the retaining member, and the bushes 48 may be replaced by roller bearings.
Patent GB-322313-A (GB)
Title: A new or improved indicator for confectionery and other foodstuffs
IPC: G09F3/18
Filed: 1928-11-14
Abstract: 322,313. Scott, Ltd., A., and Scott, N. R. Nov. 14, 1928. Fastening and securing.- An indicator or label for foodstuffs comprises a metal pin a having an ornamental head b, and a skeleton frame secured at one end to the pin and having turned in edges c to form channels to receive a removable tablet f.
Patent GB-322865-A (GB)
Title: Improvements in or relating to firearms
IPC: F41C9/08
Filed: 1928-11-14
Abstract: 322,865. Driggs, L. L., and Faber, H. B. Nov. 14, 1928. Muzzle-loading; firing-appliances.- A muzzle-loading pistol for firing a flare Q attached by a wire to a parachute U is formed with a short gastight barrel A having a thumb-released spring grip G<1>, g<2>, Fig. 4, to engage a groove i in the reduced end I<1> of the cartridge case I which serves as an auxiliary barrel. When fired by hammer b striking the blank cartridge J, the burning gases will pass through the expansion box A<0> to ignite the fuse L<1> and propel the complete projectile from its case I. When the fuse has burnt through to ignite the expulsion charge M<0> (powder) the flare Q and parachute will be projected out of the container O, and will ignite the flare which, in falling, will cause the parachute to open. The cartridge, described in Specification 322,866, [Class 9 (i), Ammunition &c.], has a felt pad K, wood block M, and a sealing disc P. The pistol may also be used for projecting smoke signals, light bombs, or tear-gas containers.
Patent GB-819803-A (GB)
Title: Asphaltite treating
Inventor: BLOOMER WARD J
IPC: C10G1/00
Filed: 1955-11-22
Abstract: <PICT:0819803/III/1> Pulverized solid asphaltite, comprising "Gilsonite" (Registered Trade Mark), glance pitch and grahamite, is mixed with a hydrocarbon liquid such as gas oil, the mixture is passed through a heater maintained at such a temperature that the gases are released from the asphaltite without coke-formation, and the hot mixture is then introduced into a distillation column where gases and vapours are separated from the liquid mixture.  Foaming in the column may be inhibited by addition of an antifoam agent into the upper part of the column.  The degasified material withdrawn from the base of the column is submitted to cracking, preferably by contact with a bed of hot coke particles.  Pulverized gilsonite is introduced continuously into tank 12 where it mixes with the liquid carrier supplied through line 16.  A carrier having a boiling range of between 350 DEG  and 600 DEG  F. is used in the approximate ratio of 1 part (by weight) of carrier to 1 part of gilsonite.  If a gas oil having an end-point of 700-900 DEG  F. is used, a lower proportion of carrier is necessary.  The slurry in tank 12 is maintained at a temperature of approximately 500 DEG  F. The slurry is withdrawn from the tank through line 18, and is passed through heating coil 22 which is maintained at about 600 DEG  F. in the case of the lower-boiling carrier, or about 770 DEG  F. with the heavier carrier.  The effluent from the coil is passed to column 26.  The vapours and gases leaving the top of the column are passed to condenser 32 and separator 33. Nitrogen, sulphur dioxide and carbon dioxide are vented from the separator via line 34.  The condensate is in part pumped to the top of column 26 as reflux; and the remainder is passed via line 35 to tank 12 for use as solvent for fresh gilsonite.  The degasified material withdrawn from the base of column 26 is passed to coker 40, which contains a moving bed of hot coke particles, where it is converted into gas, gasoline, gas oil and coke.  The vapours are fractionated in column 44; and the lighter components are passed to condenser 48. Gasoline is collected in tank 49 and gases are withdrawn via line 50.  Part of the gasoline may be returned to column 44 as reflux. Gas oil is withdrawn via line 52.  Specification 705,637, [Group XII], is referred to.
Patent GB-1389670-A (GB)
Title: Driving mechanism for webs
IPC: B65H20/02
Filed: 1971-07-16
Abstract: 1389670 Feeding webs CADBURY Ltd 5 July 1972 [16 July 1971] 33501/71 Heading B8R A web 16 fed around the periphery of a drive roller 10 is urged against the roller 10 by a pinch roller 14 mounted on a pivotable member 13, the member carrying a third roller 15 around which the web is arranged to pass so that an increase in web tension increases the force applied by the pinch roller 14 to the web. Thus slip between the web, which may be paper, cloth or endless belts, and the drive roller 10 is eliminated. The rollers on the member 13 may be removably located in slots 17, 18.
Patent GB-339744-A (GB)
Title: Engine exhaust cooling means
IPC: F01N5/00
Filed: 1929-11-04
Abstract: 339,744. Parsons, S. H. H. Nov. 4, 1929. Exhaust, cooling and silencing.-A marine engine 10 driving a propeller shaft 11, has an exhaust pipe 14, 15 and a water connection 13, 18, both discharging at the stern 17 above the water line. Between the parts 14, 15 is a T-fitting 20 with sump 21 and drain cock 22. An inlet 23 to the sump is connected to a T- fitting 24 at the highest point of the cooling- water. Conduit 13, 18, by a tube 27 provided with a control valve 26 which may be automatic or actuated by hand, pressure or a thermostat. The water in the sump mixes with the exhaust and serves to cool and silence it. The capacity of the sump is equal to that of tube 27, so that no water will flow when the engine has stopped.
Patent GB-409811-A (GB)
Title: Improvements relating to fittings for use in making connection between an electric cable and an electrical appliance
IPC: H01R13/648
Filed: 1932-11-26
Abstract: 409,811. Plug couplings. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., Hamilton House, Victoria Embankment, London, and BRYCE, S. J., Anchor Works, Leigh, Lancashire. Nov. 26, 1932, No. 33514. [Class 38 (i).] In a coupling member for an electric iron &c., connection between an earthed lead 18 in the cable and an external bent-spring earthing contact 11 is made through a conducting strip 5 carrying a terminal 6 for the earthed lead 18 and secured to a threaded pin 8, which serves at one end to attach the spring 11 and cooperates at its other end with a sleeve 14 to secure the two halves 1, 2 of the coupling member together. A second pin 16 secured to a bent extension of the strip 5 similarly engages with a second sleeve similar to 14. A switch 27 may be incorporated. The Provisional Specification refers to a modified construction in which the earthing contact comprises a metal sleeve surrounding the coupling member and provided with contact-making springy tongues.
Patent GB-851376-A (GB)
Title: Improvements in a magnetically controlled clutch or brake
Inventor: PIERCE WILLIAM C
IPC: F16D27/112
Filed: 1957-10-28
Abstract: 851,376. Making brakes and clutches. WARNER ELECTRIC BRAKE & CLUTCH CO. Oct. 28, 1957, No. 33543/57. Class 83 (2). [Also in Groups XXIV, XXXIV and XXXV] The pole structure of an electromagnetic clutch or brake, comprising concentric radially-spaced pole-rings 25, 26 integral with angularly - spaced radial spokes 29, is either pressed into shape (Fig. 6) from a blank (Fig. 8, not shown) which is stamped from a sheet of magnetic iron, or cast and machined to shape (Figs. 9 and 10, not shown). Reference has been directed by the Comproller to Specification 792,974.
Patent GB-647793-A (GB)
Title: Gyratory crusher
IPC: B02C2/04
Filed: 1947-12-22
Abstract: 647,793. Gyratory crushers. KUENEMAN, J. R., and KUENEMAN, D. Dec. 22, 1947, No. 33779. Convention date. Dec. 30, 1946. [Class 59] A gyratory crusher has a conical working face, the apex of the con being uppermost, provided by a head mounted for gyration about a fixed point above the apex of its cone in a fixed upright axis and a fixed concave overlying and enclosing the 'head and having a conically tapered bore providing a working face opposite that of the head with its apex at a point in said - axis above the point of gyration of the head. The concave 69 is mounted in an upper frame section 17 which is vertically adjustable by the use of spacing members 67. The working face of the conical head 74 is provided by the mantle 76 which is held in place by a helical spring 78 and nut 78<SP>1</SP>. The core 74 of the head is integral with a stem 24' mounted eccentrically within a sleeve 23 which may be rotated by gearing with a shaft 28 which is disposed within a housing 29. The base of the stem 24" is spherically cupped to receive a slide block 44 which moves over a stationary plate 43 disposed within a cup 21 at the base of the apparatus. The penetration of dust between the stem 24<SP>1</SP> and the sleeve 23 is prevented by means of an oil-proof, dusttight flexible sleeve 85 and a ring member 88. The sleeve 23 is surrounded by a fixed collar member 52 and an outer wall 22 of the cup 21, radial webs 19, 51 being arranged across a flow passage 34. Bolts 66 secure the upper frame section 17 to an intermediate frame section 16 comprising axially separable portions 45, 46 having flanges 57, 58 interconnected by bolts 59 bearing helical springs 62 which enable the portions 45, 46 to be separated and thus provide an overload release for the crushing zone 79. Pins 63, depending from flanges 58 engage with flanges 57 to prevent circumferential movement of the portion 46. In a modification, Fig. 9 (not shown), an upwardly extending portion of the core of the crushing head is mounted within a sphere disposed within a housing fixed by means of spider members, above the crushing zone, the point of gyration of the crushing head being at the centre of the sphere. Lubrication of the stem 24<SP>1</SP> and sleeve 23 is effected by pumping oil through a passage 92 in the base of the cup 21 into a cavity in the slider block 44. whence it passes through passages 94, 94<SP>1</SP> in the stem 24 and reaches the base of the sleeve 23 through a slot 98 provided in thestem bushing 39<SP>11</SP>, returning for cleaning and re-circulation by passing into the upper portion of the cup 21 and away from' it through a passage 21". The upper parts of the stem 24 and sleeve 23 are lubricated as oil passes upwardly in a slot 102 in stem bushing 39<SP>1</SP>, through the upper part of the sleeve 23 and downwardly along a. slot 104 in the sleeve exterior or through a passage in the collar member 52 to a space 54. Some oil then passes to the bevel pinion 27 of the shaft 28 and some passes to the shaft housing 29. The operating shaft 38 of the oil pump may be geared to the shaft 28.