baber/WOPTO huggingface dataset:
Patent GB-1408131-A (GB)
Title: Machine tool including tool change apparatus
IPC: B23Q3/155
Filed: 1971-06-09
Abstract: 1408131 Tool changers GLACIER METAL CO Ltd 8 Sept 1972 [9 June 1971] 19551/71 Heading B3B A machine tool including a tool spindle and tool change apparatus comprises a support member, e.g. an indexable drum 12, which carries a plurality of means 11 for gripping tools 14, the said support member being movable translationally and rotationally about an axis parallel with the spindle 20 to place a tool from one of the gripping means 11 into coaxial alignment with the tool spindle when the tool spindle 20 is in a machining position, the spindle having a socket to receive the shank of the tool and jaw means for engaging a shoulder on the shank and an actuator arranged to move the jaw means against the wall of the socket to cause the jaw means to engage the shoulder positively. The drum 12 is movable between a magazine store, where tools 14 are loaded on to the gripping means 11 by a pneumatically operated arm and gripper, and a position adjacent the spindle 20. The drum 12 is indexable about an axis parallel to the spindle and is movable in the direction of this axis to insert and remove tools from the spindle. The end of the spindle protrudes from a front surface of the machine tool to prevent tools in the grippers 11 hitting the machine tool. Each tool has a taper shank 14a and a groove (36) (Fig. 3, not shown) which is gripped by jaws (24) mounted within the spindle. A pneumatically operated draw bar (29) retracts the jaws into a tapered bore to lock them into the groove (36) and draw the tool shank into its spindle socket to interengage driving keys and slots.
Patent GB-389707-A (GB)
Title: Improvements in or relating to apparatus for treating air with water
IPC: F24F6/06
Filed: 1932-07-11
Abstract: 389,707. Ventilation apparatus. CARRIER ENGINEERING CO., Ltd., 24, Buckingham Gate, London. July 11, 1932, No. 19590. Convention date, Nov. 28, 1931. [Class 137.] In plant for treating air with water, instruments for regulating the humidity and temperature of air are operated pneumatically by air compressed by a water jet blast 22. Air entering by flaps 5 passes through jets 20 of water circulated by a pump 17, through filter plates 33 and after mixing with air admitted by flaps 6 is drawn through a heater or cooler 10 by a fan 34. A valve 8 regulating through a rod 7 the position of flaps 5, 6 and a valve 12 controlling the heater or cooler 10 are operated through a hygrostat and thermostat by compressed air obtained from a water jet 22 operated from the pump 17. The mixed air and water entrained are delivered by nozzles 25 under the water surface in a vessel 24 with a float valve 26, excess water returning by a pipe 29 to reservoir 16. A valve 41 regulates the water flowing to the jet 22 from the pump, which may have a filter 39 ; or a separate pipe 21<1> may lead to the jet 22 from the pump.
Patent GB-245412-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: B60T17/10
Filed: 1925-08-04
Abstract: 245,412. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Compagnie des Freins Westinghouse). Dec. 30, 1924, [Convention date]. Fluid-pressure.-A triple valve of the kind provided with a spring-pressed valve disposed in the piston to permit rapid recharging of the auxiliary reservoir of a single chamber brake is used in a brake system of the differential brake cylinder type to permit rapid recharging of the cylinder in releasing the brake. The piston of the valve is provided with a non-return valve b normally seated by a light spring d. The train-pipe and brake cylinder are connected respectively at e and i and in charging, air from the train-pipe flows past the valve b to the cylinder as well as around the piston by the usual groove. When the train-pipe pressure is reduced to apply the brakes the slide-valve is moved to allow air to flow from one chamber of the cylinder to the atmosphere or to another receptacle such as a a single chamber brake cylinder co-operating with the differential brake cylinder. The Specification as open to inspection under Sect. 91 (3) (a) states that the valves may be used in a single chamber brake. This subject-matter does not appear in the Specification as accepted.
Patent GB-771168-A (GB)
Title: A jaw crusher
IPC: B02C1/04
Filed: 1955-07-07
Abstract: 771,168. Jaw crushers. KLOCKNERHUMBOLT-DEUTZ AKT.-GES. July 7, 1955 [July 7, 1954], No. 19671/55. Class 59 In a jaw crusher with toggle joint drive in which one, 24, of the toggle levers bears against an adjustable abutment 23 and in which a tie rod 25 is connected to the oscillating crusher jaw 8 and is provided with a pre-tensioned spring which bears against a stop 21, the stop is rigidly connected to the adjustable abutment e.g. by welding. As shown, two springs 18, 20 are used between which is disposed a slidable member 19 guided in a casing 16 which is fastened to the stop 21. Serrated crushing members 1, 5 and 2, 6 are secured to the fixed and oscillating crusher jaws by means of wedges 3, 4. A tension spring may be used instead of the compression spring or springs.
Patent GB-1533539-A (GB)
Title: Method of one-side galvanizing
IPC: C23C2/26
Filed: 1977-05-11
Abstract: 1533539 One side zinc coated ferrous strip; electro-depositing zinc INLAND STEEL CO 11 May 1977 [11 May 1976] 19731/77 Headings C7B and C7F One side zinc coated ferrous strip is produced by passing through a hot galvanizing dip 17, removing most of the zinc from one side by steam jet 21 to leave a thin film which is heated at 22 to form a Zn-Fe intermetallic layer which is removed by abrasive means 30, 31. Alternatively the Zn may be electro-deposited.
Patent GB-1209967-A (GB)
Title: Petroleum purification
IPC: C10G45/04
Filed: 1968-04-25
Abstract: 1,209,967. Hydrorefining; hydrocracking. ATLANTIC RICHFIELD CO. 25 April, 1968 [25 April, 1967], No. 19773/68. Heading C5E. A petroleum feed, e.g. crude or topped crude oil, or oils derived from shale oil, tar sand or coal, containing sulphur impurities and metals is preheated at 14, before or after mixing with at least 2,500 S.C.F. of recycle hydrogen per barrel of feed, and hydrodesulphurized at 16 while in the liquid phase at 600-850‹ F. and 500-5000 p.s.i.g. using a catalyst comprising an oxide or sulphide of V, G, Mo, W, U, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir or Pt on a support made by calcining an aluminium hydroxide containing 1À2 to 2À6 moles of water of hydration. The hydrodesulphurized effluent is separated at 40 into a gaseous stream 42 and a liquid stream 41. The gaseous stream is then hydrocracked at 22 in the vapour phase at 700-1000‹ F. and 500- 5000 p.s.i.g. using as a catalyst an oxide or sulphide of Cr, Mo, W, U, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir or Pt deposited on an oxide of Si, Be, Mg, Ca, Sr, Ba, Ra, B, Al, Ga, In, Tl, Zr, Hf or Th. The hydrocracked material is separated at 28 into a gas stream 31 from which recycle hydrogen is obtained and a liquid stream 29 which provides naphtha, and furnace and fuel oil containing less than 0À5 wt. per cent sulphur. The process can be modified (Fig. 2, not shown) by hydrocracking the liquid stream 41 after heating it with added hydrogen, separating this hydrocracked effluent into a gas stream which is combined with the gas stream 42 from the separator 40 and a liquid stream which is mixed with the liquid stream 25 entering the cooler 26. In an example the catalyst used for hydrodesulphurization consists of 0À6% Ni, 1% Co and 8% Mo on alumina and the hydrocracking catalyst consists of 3% cobalt oxide and 12% molybdenum oxide on an alumina support.
Patent GB-1509103-A (GB)
Title: Lead monoxide and process for preparation thereof
IPC: C09C1/14
Filed: 1976-05-13
Abstract: 1509103 Lead monoxide MIZUSAWA KAGAKU KOGYO KK 13 May 1976 19804/76 Heading C1A The invention relates to a novel lead monoxide having a pycnometric density of 8À5 to 9À2 g./cc., a primary particle size not larger than 0À2 Ám, an infrared absorption peak at a wave number of 1400 to 1410 cm<SP>-1</SP> and a chromic anhydride reactivity, as defined, of at least 94%. The monoxide may be the "litharge" type of density 8À80 to 9À17 g/c.c., the massicot type of density 8À35 to 9À2 g/c.c. or the hydrate type of lead monoxide of density 8À80 to 9À10 g/c.c. and having a hydrate water content of 0À2 to 0À8 mole per mole PbO, each form having a primary particle size of 0À01 to 0À05 Ám and characterized by their respective X-ray diffraction pattern. A process is also described for preparing the lead monoxides by charging metallic lead, a liquid medium inert to metallic lead and lead monoxide and CO 2 -free oxygen gas to a rotary mill, rotating the mill so that at least part of the metallic lead granules wetted with the liquid medium are located temporarily in the oxygen above the level of the liquid medium and thereby forming a thin lead monoxide coating on the lead granules and grinding the oxide-coated metallic granules in the liquid medium to form by friction therein a dispersion of very fine particles of lead monoxide in the medium, separating the dispersion from the metallic lead granules to yield, if desired, the lead monoxide in a fine powder form. The process may be conducted continuously or batchwise; preferred ranges for the ratios of solid lead/liquid medium; the volume of oxygen/volume of liquid medium, and the bulk volume of the lead/total volume of the mill are claimed. The rate of rotation of the mill is preferably 20-150% of a critical rotation number, as defined. The liquid medium may be a polar or non-polar organic solvent or an aqueous medium and the process may be conducted at an O 2  pressure of at least 0À2 Kg/cm<SP>2</SP> (absolute) in the range of -5 to 70C
Patent GB-153673-A (GB)
Title: Improvements in filing or storage cabinets
IPC: A47B63/02
Filed: 1919-08-12
Abstract: 153,673. Haddan, A. J. H., (National Cash Register Co.). Aug. 12, 1919. Boxes and cabinets.-A filing-cabinet of the class provided with means for preventing articles withdrawn from being completely replaced together with means for disabling the preventing- means, is described in connexion with the filing of destination devices referred to in Specifications 143,821 and 144,365, [Class 106 (iii), Fares &c.]. The filing-cabinet comprises vertical frames 10 cut at 11 to form flanges 12 with shoulders 16. These flanges support slides 13 cut at 14 to form projections 15 which guide the slides on the flanges and limit their forward movement. The slides carry the destination devices 17 described in Specification 143,821, [Class 106 (iii), Fares &c.], the rear of each destination device engaging the up-turned portions 18 on the slides. A further up-turned flange 20 on the slide takes against the forward edge of a frame 22, thus limiting the rearward movement of the slide, there beiug one frame for each vertical row of destination devices. This frame has slots 23 for the pivots of plates 25, the front edges of which normally rest upon the destination devices. When any slide is pulled out, the plate 25 drops behind the respective destination device and thus causes the detection of each separate device withdrawn. The plates are elevated as a whole by vertical bars 27 provided with cross rods 26, the upward movement of the bars being obtained by a handlever 37 and bell-crank levers 30 operating on a cross-rod 28 mounted in the lower end of the bars. The downward movement of the bars and cross. rods is limited by arms 36 of bell-crank levers 34 at the upper end of the bars coming in contact with the back of the cabinet. For preventing the elevation of the plates, the bolt 44 of a lock 41 engages the flat surface of a stud 42 on the bar 27 at the right-hand side of the cabinet.
Patent GB-204166-A (GB)
Title: Improvements in variable speed transmissions
IPC: F16H29/08
Filed: 1922-07-19
Abstract: 204,166. Marks, E. C. R., (Driscoll Patents Co.). July 19, 1922. Variable-speed and reversing gearing.-Reversible friction ratchet gearing which may be combined with a variable-speed linkage comprises pawls or impellers 91, 92, Fig. 4, adapted to drive a drum 97. These pawls are mounted upon eccentrics 93, 94, Fig. 1, at 180‹ apart upon a driving- sleeve 90 which is operated by an oscillating impeller arm 49, Fig. 2. The pawls are guided outwards into engagement with the drum as the eccentric begins to move, and are stopped from travelling with the drum at the end of a stroke, by pins 102 projecting from a plate 95 which is connected by a screw 84 of steep pitch to a seeve 82 which can be thrust longitudinally by a lever 89. Reversed driving is effected through this lever and screw so as to cause the pawls to become operative upon their opposite ends. In the variablespeed gear described, the ratchet mechanism is duplicated and is arranged upon a driven shaft 70 in line with driving- shaft 31. There is a clutch 25 for direct driving and a gear 24 for alternatively driving a countershaft 34 which drives through the variable linkage. Levers 42 are oscillated upon fixed pivots 43 by rods 40 connecting to cranks sliding in the slotted upper arms of these levers are connected by rods 47 to the impeller arms 49. The blocks 45 are moved to vary the speed by turning screws 60 in unison through toothed gearing 63.
Patent GB-870375-A (GB)
Title: Improvements relating to photographic developing apparatus
IPC: G03D3/12
Filed: 1957-06-25
Abstract: 870,375. Photographic processing apparatus. SMITH, R., and MACLEAN, C. H. June 25, 1958 [June 25, 1957], No. 19943/57. Class 98(2) The upper and preferably image surface of a photographic element is wiped as the element is conveyed through a liquid bath. It may be wiped by rotating brushes, stationary squeegees having soft rubber plies as in the blade of a windscreen wiper or a relatively moving absorbent surface of a rotating roller. The bath liquid may be supplied through the hollow interior of such a roller or through the spine of a brush. As shown, belts 8 carry separate prints through developing, washing and fixing baths 1, 1 a  and 1b. After the prints leave guide plate 18 they are wiped on passing brushes 24, the shafts 21 of which are axially reciprocated in different phases by cams 25 driven by the belt drive motor. Belts 8 run between pairs of flanges 14 on roller 13 which stand proud of the belts to lift the prints and assist in carrying them over to the next bath. A further roller (not shown) having soft rubber teeth may co-operate with the flanged roller to assist in the transfer. Members of inverted channel section extend from the end walls 3 and are joined in the middle of the apparatus by a latch 46. Guide plate 18, rollers 9, 10, 11, 12, 35 and 43 and shafts 21 are journalled in the inner side walls 3b of these members and are lifted out of their respective baths when the members are separated by pivoting about shafts 44 and 45. The belts 8 are left hanging slackly in the bath liquid. According to the Provisional Specification the side edges of the conveyer belt may have rubber lips.
Patent GB-769303-A (GB)
Title: Improvements in the production of polyacrylonitrile
IPC: C08F20/44
Filed: 1952-08-08
Abstract: Addition to 701,293 Acrylonitrile is polymerized in aqueous dispersion in the presence of a redox catalyst, e.gs potassium persulphate and sodium bisulphite, and sulphur dioxide under pressure as the sole agent for supplying hydrogen ions and for maintaining and regulating an acid pH.  The polymerization may be effected continuously and is preferably interrupted before complete conversion.  The polymer dissolved in dimethylformamide may be spun.
Patent GB-776341-A (GB)
Title: Improvements in or relating to electrical testing equipment
IPC: G01R25/00
Filed: 1953-07-20
Abstract: 776,341. Electric tests. BRYCE ELECTRIC CONSTRUCTION CO., Ltd., and BREWER, S. R. B. July 8, 1954 [July 20, 1953], No. 20036/53. Class 37. Apparatus for measuring the power factor of an inductive load comprises a capacitor or resistor arranged in series with a tapped coil operatively associated with a current-transformer and ammeter adapted to be connected to the load whose power factor is to be measured, whereby the ammeter is adapted to give a measurement of the vectorial sum of the line current and the capacitor or resistor current multiplied by the number of turns of the coil. In Fig. 1 a tapped coil 1 placed over the jaws of a clip-on ammeter 10 may by switch 3 be seriesconnected with a capacitor 2 across inductive load 8 under test. Firstly, the line current Il, Fig. 2, of load 8 is measured by ammeter 10 in the normal way and then switch 3 is closed and the coil turns 1 adjusted until ammeter 10 gives a minimum reading and thus Iw; the power factor of the load 8 is then Iw/Il. In Fig. 2, E represents the supply voltage and Ic the capacitor current multiplied by the number of turns of the coil 1. The latter may comprise 1000 turns arranged with rotary switches so that any number of turns between 10 and 1000 can be selected. A current transformer with or without a split core may be used instead of a clip-on ammeter. If the supply to the load is multiphase the capacitor or resistor must be in the same phase as that in which the load current is to be measured.
Patent GB-1255453-A (GB)
Title: Improvements in rolls for the treatment of textile webs
Inventor: KUSTERS EDUARD
IPC: B30B3/00
Filed: 1970-04-27
Abstract: 1,255,453. Rollers. E. KUSTERS. 27 April, 1970 [7 May, 1969], No. 20057/70. Heading F2U. [Also in Division D1] A web treatment roller consists of an inner core 3 carrying an outer elastic shell 5 of polyurethane having a Shore A hardness of between 86 and 96, applied by coating the core with liquid polyurethane. The core is supported on a fixed shaft 4 by bearings 11, and the annular space between them is divided into two portions by diametrically opposite longitudinal seals 8, the lower portion 9 being supplied with pressure fluid through a passage 10 to increase the nip loading.
Patent GB-1347526-A (GB)
Title: Lawn mower
IPC: A01D34/42
Filed: 1971-04-19
Abstract: 1347526 Mowers PHILIPS GLOEILAMPENFABRIEKEN NV 19 April 1971 [23 Jan 1970] 20070/71 Heading A1F To reduce unnecessary effort in propelling a hand or battery driven lawn mower having a ledger blade and a reel rotating about a horizontal axis, the reel diameter is over 16 cm and circumferential spacing of the blades is from 3.5 to 6 cm, and the ratio of the peripheral speed of the reel to the travelling speed is from 1:1 to 3:1 when travelling at 1 m/sec so that the number of cutting actions is relatively low and the number of times each blade of grass is cut is kept to a minimum, preferably once only. The ledger blade is positioned in or forward of the vertical plane containing the reel axis and either the ledger blade or the reel blades may be mounted so that the drag of material engaged between them urges the blades together.
Patent GB-351263-A (GB)
Title: Improvements in fire extinguishers
IPC: A62C35/60
Filed: 1930-07-02
Abstract: 351,263. Fire-extinguishers. DEHN, F. B., 103, Kingsway, London.-(Forman, B. S. ; 2212, 40th Avenue, Long Island City, New York, U.S.A.) July 2, 1930, No. 20080. [Class 47 (ii).] An automatic extinguisher comprises an elongated glass container 20 filled, for example, with carbon tetrachloride and supported at its ends by arms 13 on a holder 12 adapted to be secured to a wall or elsewhere. A hammer 22 adapted to strike and break the container intermediate its ends is carried by a spring 18 normally held inoperative, under tension, by a fusible rod 19 passed through ears 16 struck out from the holder 12. The container 20 may be removed from the holder and used as a grenade.
Patent GB-233212-A (GB)
Title: Improvements in weight indicating devices
IPC: G01G23/36
Filed: 1924-08-26
Abstract: 233,212. Fielden, E., and Foster, C. S. Aug. 26, 1924. Balances ; spring balances. - In a weighing- scale having an indicator arm moving over a fixed surface, the indicator arm is provided with a bridging-piece adapted to contact with a pair of blocks disposed on the fixed surface and thereby to close an electric alarm circuit. As shown, a pair of contacts J are adjustably secured in a slot in a strip G of insulating material which is disposed behind the scale chart C<2>. The contacts J are included in the circuit of an electric bell or other alarm F, and are adapted to be bridged by a metal wheel H which is mounted in vertical slots h in the indicator arm A.
Patent GB-668060-A (GB)
Title: Improvements in and relating to methods of making three-phase magnetic cores
IPC: H01F41/02
Filed: 1950-08-15
Abstract: 668,060. Making magnetic cores. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 15, 1950 [Aug. 24, 1949], No. 20241/50. Class 83 (ii). A method of making spirally wound laminated magnetic yokes 4, 5, for a magnetic core of the type having a plurality of winding legs 1, 3, connected together at their ends by the yokes, comprises simultaneously spirally winding a plurality of superposed separate strips 6, 7 of magnetic material on the same mandrel 8. the strips serving as spacers between successive turns of each other, and after the required turns have been wound, separating the wound spirals from one another. To facilitate assembly, the yoke which is to be placed on the legs 1, 3 last may be cut transversely to divide it into short lengths of at least one turn. Specification 637,142 is referred to.
Patent GB-720514-A (GB)
Title: Improvements in an improved electric capacitor
Inventor: SHEN TZU EN
IPC: H01G4/258
Filed: 1952-08-12
Abstract: 720,514. Electric condensers. BRITISH DIELECTRIC RESEARCH, Ltd. Aug. 12, 1953 [Aug. 12, 1952], No. 20274/52. Class 37. A capacitor unit comprises a glass and a ceramic capacitor connected in parallel so that their temperature variations of capacity cancel each other. The main capacitor consists of a sandwich of glass dielectric sheets interleaved with metal foil electrodes 3, the whole being sintered to form a single unit, alternate foils being brought out to terminal wires 4, 5 at opposite ends of the unit. The auxiliary capacitor 6, consisting of a disc of high permittivity ceramic (e.g. a sintered mixture of calcium and magnesium titanates) with metallized surfaces is mounted above, and spaced from the main unit by rigid connections 7, 8 to its terminal wires 4, 5. The.main constituent of the ceramic is one of or a mixture of magnesium, barium calcium, and strontium titanates and rutile. The whole assembly is embedded in synthetic resin 9 such as " Araldite " (Registered Trade Mark) in a case 10 of moulded cresol-formaldehyde resin.
Patent GB-513621-A (GB)
Title: Improvements in and relating to the automatic speed regulation of rotating machinery
IPC: G04C15/00
Filed: 1938-01-14
Abstract: 513,621. Automatic control systems. BRITISH THOMSON - HOUSTON CO., Ltd., and STEWART, C. Jan. 14, 1938, No. 20539/39. Divided out of 511,192. [Class 38 (iv)] Speed; frequency.-To control the speed of an alternator or any other rotating machine a regulator of the instantaneous speed is influenced so as to maintain a constant average speed. An electric relay 6 responsive to variations in current proportional to instantaneous speed of the machine 1 has its electrical characteristics adjusted. for this purpose by a speed error integrator so that the mean value of instantaneous speed which it produces is adjusted according to variations in average speed. Resistances 12, 13 in series and or shunt with the regulator coil are operated on by switch means 8, 9, 10 actuated by a regulating error integrator 7 between an alternator 2 and a master clock 11. The regulator 6 may be energized by a D.C. generator 3 driven by a synchronous motor 4.