baber/WOPTO huggingface dataset:
Patent GB-1537175-A (GB)
Title: Bolt anchor
IPC: F16B13/06
Filed: 1977-04-19
Abstract: 1537175 Expansion anchors ITT INDUSTRIES Inc 19 April 1977 [29 April 1976] 16176/77 Heading F2H An anchor device comprises a sleeve 20 having one or more longitudinal slots and which is expanded by a tapered member 30 threaded on the leading end of a bolt 10. The bolt has a shank of approximately the same diameter as the sleeve which has gripping means such as deflected corners 28. The expander member 30 has projections to engage the sleeve and prevent relative rotation and its conical surface has a steeper taper at the lower end. The transition 11 between the upper shank and the threaded part of the bolt 10 may be conical (preferably having an included angle of about 60 degrees) to expand the upper end of the sleeve 20.
Patent GB-926879-A (GB)
Title: Phase directional coupler
IPC: H01P5/16
Filed: 1959-05-12
Abstract: 926,879. Directional couplers. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION. May 12, 1959 [May 13, 1958; Dec. 10, 1958], No. 16193/59. Class 40 (8). [Also in Group XXXVI] A directional coupler comprises two orthogonally disposed rectangular waveguides 1, 2 having a common broad-wall partition of quadrilateral form in which a rotatable slot is arranged on one of the diagonals. The slot may be dumb-bell shaped or elliptical in form and is capable of being revolved at high speeds. The coupler may be used as a measuring bridge for ascertaining the value of an impedance Zx. Power travelling towards this impedance and power reflected from it is coupled into the waveguide 2 and divides into two equal components which propagate in opposite directions. One end of the waveguide 2 is terminated by a matched load 4 and the other by a square law detector connected to measuring circuitry (see Group XXXVI). A frequency-dependent attenuator 5 is included in the waveguide 2 to compensate the variation of the coupling coefficient with frequency.
Patent GB-145071-A (GB)
Title: Improvements in the manufacture and production of phthalic anhydride
IPC: C07C51/31
Filed: 1920-06-16
Abstract: Phthalic anhydride is prepared by passing naphthalene vapour mixed with oxygen-containing gas, e.g. air, over an oxygen carrier, such as oxides of vanadium, at a temperature below red heat, that is, below about 580 DEG  C.  The catalyst may be distributed over a support, such as pumice.  According to the Specification as open to inspection under Sect. 91 (3) (a), molybdenum oxides are also suitable catalysts for the reaction.  The catalyst may be prepared for example by impregnating pumice with a colloidal solution of vanadic acid mixed with starch or finely-divided blood charcoal, drying, and heating in air to burn off the carbonaceous matter; or by soaking pumice in gum solution, and then shaking it with ammonium vanadium; or powdered pumice is mixed with ammonium vanadate and suitably formed; or ammonium molybdate is precipitated on pumice by means of blood charcoal, and the charcoal then burnt off by heating in air.  This subject-matter does not appear in the Specification as accepted.ALSO:Phthalic anhydride is prepared by passing naphthalene vapour mixed with oxygen-containing gas, e.g. air, over an oxygen carrier, such as oxides of vanadium, at a temperature below red heat, that is below about 580 DEG  C.  The catalyst may be distributed over a support, such as pumice.  According to the Specification as open to inspection under Sect. 91 (3) (a), molybdenum oxides are also suitable catalysts for the reaction.  The catalyst may be prepared for example by impregnating pumice with a colloidal solution of vanadic acid mixed with starch or finely-divided blood charcoal, drying, and heating in air to burn off the carbonaceous matter; or by soaking pumice in gum solution, and then shaking it with ammonium vanadate; or powdered pumice is mixed with ammonium vanadate and suitably formed; or ammonium molybdate is precipitated on pumice by means of blood charcoal, and the charcoal then burnt off by heating in air.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1120401-A (GB)
Title: Process for the production of hydrocyanic acid
IPC: C01C3/02
Filed: 1966-04-14
Abstract: HCN is prepared by pre-heating a mixture of O2, N2, NH3 and CH4 and passing it over a catalyst comprising Pt, Rh, Ir or a mutual alloy thereof at 1000-1400 DEG  C., wherein the molar ratio of (a) O2:O2 + N2 is above 0.21 and not more than 0.35; (b) O2 + N2:NH3 is from 6 to 2; (c) O2 + N2:CH4 is from 6 to 1.6 and (d) CH4:NH3 is from 1.3 to 1.0.  The molar ratio (a) is obtained by using air enriched with oxygen.  The catalyst is preferably in net form.
Patent GB-612671-A (GB)
Title: An improved treadle-operated vehicle driving mechanism
IPC: B62M1/00
Filed: 1946-05-29
Abstract: 612,671. Treadle driving-mechanism. KOZUB, W., MACIEJEWSKI, K., and PRZYBYLSKI, K. May 29, 1946, No. 16394. [Class 136 (ii)] Treadle-operated vehicle driving mechanism comprises a pair of coaxially mounted rocking levers 8, 9, pedals 13, 14 for rocking the levers in opposite directions, a pair of driving wheels 2, 3 coupled to a driven shaft 1 through unidirectional clutches 2a, 3a and a pair of driving bands or chains 4, 5, each having one end connected to one of the rocking levers and passing over one of the driving wheels, the bands or chains being crossed-over and the ends of opposite bands being connected together. A ring 18 is slidable on each of the levers 8, 9 and the chains 4, 5 are attached to it through connections 4a, 5a. Wires 16, 22 are attached to the ring 18 so that a change of speed can be effected while the driving mechanism is in motion. The levers are curved, the radius of curvature having its centre on the centre of the axle 1. A multi-strand steel rope or multi-strand elastic cable 26 connects the axle 1 to the wheel hub 27 of the vehicle wheel 28. The cable strands open out and are forced on to wedges 29 by means of bushes 30. The wheel hub rotates on bearings 31 in a resiliently sprung wheel support 32. The direction of rotation of the driving axle may be reversed by disengaging a sleeve 12 from a dog clutch member 25.
Patent GB-276778-A (GB)
Title: Improved means for winding paper or other webs into rolls
IPC: B65H18/16
Filed: 1926-06-30
Abstract: 276,778. Marks, E. C. R., (Cameron Machine Co.). June 30, 1926. Winding webs.-In a web-winding apparatus, particularly for winding paper as it is delivered from a paper-making machine, the winding-shaft is mounted in guides so arranged that the accumulation of material upon the shaft causes it to travel over the surface of the winding-drum or other winding means, so as to permit a new winding-shaft to be placed in winding position before the removal of the full roll. The ends of the winding-shaft 3, Fig. 1, are mounted in guides 4 having hinged portions 5 to allow of the insertion of the shaft, and the guides are so shaped that the roll during winding travels over the surface of the winding-drum 1, so that a new winding-shaft can be inserted in the guides ready to receive the web. When the roll is full, the web is severed aid attached to the new shaft and tha old roll is moved to the end of the guides in line with slots 60 through which it may be removed. The winding-shaft comprises a sleeve 8, Fig. 3, loosely mounted on a core 70 which is provided with pinions 10 adapted to engage racks 11, Fig. 1, on the guides so as to keep the winding-shaft parallel to the drum 1. Hooks 12 are also loosely mounted on the core 70 for the attachment of cables 13 carrying weights 15 for counterbalancing the weight of the paper &c. on the roll. These hooks also serve for detachment of cables for housing the rolls out of the machine. Antifriction rollers 16 may be provided on the core 70 to run in the guides 4. In a modification the lower ends of the guides are so shaped as to hold the winding-shaft out of engagement with the drum 1 and in contact with an auxiliary winding-drum during the initial portion of the winding-operation.
Patent GB-1174214-A (GB)
Title: High impact polystyrene composition containing bimodal rubber particles.
Inventor: WALKER DALE ANDREW
IPC: C08F279/02
Filed: 1968-04-05
Abstract: 1,174,214. High impact polystyrene. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 5 April, 1968 [7 April, 1967], No. 16470/68. Heading C3G. A high impact polystyrene composition comprises (a) as the continuous phase, 70-99 parts by weight of polystyrene and (b) as a discontinuous elastomer gel phase dispersed therethrough, 30-1 parts by weight of a diene elastomer-styrene interpolymer phase wherein (1) 70-97% by weight of the dispersed phase have particle sizes of 1-3 microns diameter and (2) 30-3% by weight of the dispersed phase have particle sizes of 5-25 microns diameter. The composition may be prepared by blending together two high impact polystyrene compositions, one of which contains the dispersed elastomer phase having the smaller particles and the other of which contains the dispersed elastomer of larger particle size. In another embodiment, styrene is interpolymerized with two different elastomers to yield the two different particle size ranges in the dispersed phase. In addition styrene may be interpolymerized with a single elastomer under such conditions, e.g. of agitation as to yield the desired particle distribution in the elastomer-styrene interpolymer phase. Examples are given in which styrene is polymerized with polybutadiene and butadienestyrene block copolymer to yield a product in which the elastomer phase is of size 1 to 2 microns diameter and the product is blended with one obtained by polymerizing styrene with an SBR rubber to yield a product in which the elastomer phase is of size 15 to 20 microns.
Patent GB-1079013-A (GB)
Title: Improvements in or relating to contacts and electrodes
Inventor: WOOD ALLAN JOHN
IPC: C22C9/00
Filed: 1964-04-21
Abstract: The arc supporting region of a contact or electrode comprises particles of a refractory metal distributed in a matrix of an alloy of a metal which provides a gettering action and high purity metal chosen from the group consisting of copper, silver and gold, the refractory metal not exceeding 95 per cent by weight of the total. Refractory metals listed are tungsten, molybdenum, rhenium, niobium, tantalum.  Metals providing a gettering action listed are zirconium, titanium, thorium. The arc supporting region may include nickel. A process is described comprising purifying oxygen-free copper by twelve zone-refining passes in argon and two in vacuum and using it to make an alloy of 99.5 per cent copper and 0.5 per cent zirconium by vacuum melting.  Tungsten powder size 76-250 microns is electroplated with nickel to act as a wetting agent in amount 0.2 to 2.0 per cent by weight of tungsten and the particles compacted in a press at 5 to 20 tons/sq.in. and then sintered at 1200 DEG C. to 1400 DEG C. in a pure dry hydrogen atmosphere for 30 to 90 minutes.  The tungsten compacts were placed in graphite moulds, the zirconium copper alloy placed on and the moulds inductively heated in vacuum to 1100 DEG C. to 1200 DEG C. for twenty minutes so that the alloy melts and infiltrates the tungsten.  The proportions of tungsten in the contact or electrode tip may be between 60 and 95 per cent. Infiltration may be carried out in an inert gas or hydrogen. The nickel may be added as a powder.
Patent GB-1309124-A (GB)
Title: Protective bearing member for a friction mechanism such as a brake or clutch
IPC: F16D13/64
Filed: 1970-04-07
Abstract: 1309124 Multiple-disc brakes; friction clutches B F GOODRICH CO 7 April 1970 [7 April 1969] 16532/70 Headings F2C and F2E] Figs 1 to 8, (of which only Fig. 3 is shown here), and the relevant description, are substantially the same as the disclosure in Specification 1,302,216 (referred to), but the present Specification is concerned with the wearresistant bearing-members disposed in the slotted openings provided in the disc peripheres for transmitting, or resisting the transmission of, rotational torque. As shown, a clip 58, Fig. 9, of wear-resistant material such as steel, is nickel-plated to facilitate axial sliding of a disc member, such as 32, Fig. 3, to which it is fitted, along the splines (31, Figs. 1 and 2, not shown) of a fixed torque tube (27). Each of the arms 59, Fig. 9, has an integral leaf spring 61 so that when the clip is inserted in a slot 36, Fig. 3, the leaf springs snap out under the lips of the slot. A slot with a clip fitted is shown to the right of the empty slot in Fig. 3. Flanges 62 are provided at the ends of arms 59 to protect the edges of slots 36 and minimize chipping or wear of the material, beryllium, of which disc member 32 is made. The clips are held firmly but not rigidly so as to adjust to size and shape changes of the disc caused by temperature changes during service. The clip may be removed by nipping it inwards and pulling it radially.
Patent GB-115589-A (GB)
Title: Boiler Smokebox Door Locks.
Inventor: DUNDAS JAMES
IPC: F23J13/08
Filed: 1917-11-12
Abstract: 115,589. Dundas, J., and Sturrock, R. Nov. 12, 1917. Turn-button fastenings.-In fastenings for boiler smoke-box doors of the type in which a bar loosely pivoted on a threaded stud projecting through the smoke-box frame is forced into engagement with the door bv means of a handoperated nut turning on the stud, the bar D is pivoted eccentrically on the threaded stud F so as to fall clear of the door B when the nut E is unscrewed, and means are provided for securing the stud F against rotation. A bolt K is passed through an eye in the inner end of the stud F and through an aperture in an adjacent angle-iron J and is secured in position by a nut L; and a nut H is screwed on to the stud above the smoke-box frame A. In the case of end doors, in order to prevent the bar from fouling the door, a spring washer may be fitted on the stud beneath the bar, so that the bar is retained in position when turned to free the door. In a modification, the bar D is arranged to secure two doors simultaneously.
Patent GB-530266-A (GB)
Title: Improvements in or relating to variable capacitance electrical condensers
Filed: 1939-06-06
Abstract: 530,266. Variable condensers. HUNT, Ltd., A. H., and BETTERIDGE, F. L. G. June 6, 1939, No. 16622. [Class 37] A trimmer condenser. of the type in which a bowed movable plate 14 is caused to vary its distance from a plate 13 fixed to a base, by an adjusting means such as a screw 20, has a resilient member, such as a spring 21, interposed between the adjuster and the movable plate, to reduce sudden variations in capacity on movement of the adjuster.
Patent GB-589960-A (GB)
Title: Hydraulic valve
IPC: F16K31/524
Filed: 1943-10-11
Abstract: 589,960. Valves. ADEL PRECISION PRODUCTS CORPORATION. Oct. 11, 1943, No. 16628. Convention date, Nov. 30, 1942. [Class 135] A valve for controlling the flow of fluid to and from an hydraulically-operated device comprises valve closure members 24, 25 carried on stems formed with passages 34, 34a, the lower ends of which can be obturated by valve heads formed on push rods 26, 27 which are actuated by cams carried by a shaft 30 in a bore running through.the casing at right angles to the main bore housing a removable cage 11 carrying the closure members 24,25. When valve 24 is raised by its push rod 26, the latter will close the passage 34 so that pressure fluid entering through port 18 will flow out through port 6 to an hydraulic cylinder..Return fluid enters through port 5, flows through passage 34a, through port 8 which will be uncovered by push rod 27, through a passage 9 and into the bore housing the cam-shaft, and out through port 10. The timing of operation of the valves 24, 25 can be adjusted by altering the position of the push rods on the cams 29, this being effected by rotating the cage 11 in its bore by means of set-screws which act on flat surfaces in recesses in the periphery of the cage. The passages housing the valves are closed in by a disc 15, and the cage 11 and disc 15 are secured in the casing by a screwed cap 14. Packing members 3, 11e, 11f, 15a are provided. Specifications 570,112 and 589,957 are referred to.
Patent GB-637989-A (GB)
Title: Improvements in or relating to emulsifying or mixing apparatus
IPC: B01F7/00
Filed: 1948-06-22
Abstract: <PICT:0637989/III/1> The agitator in a mixing or emulsifying machine comprises a propeller blade 16 secured to the lower end of a vertical shaft 7 and a helical arrangement of radial beater bars 29 secured to the shaft above the propeller.  The propeller blade and beater bars are contained in a housing 13 having a tubular extension 21 for insertion into the liquid under treatment, the housing containing within its upper end a fixed perforated plate 26 through which liquid drawn in through the extension 21 is forced and thus expelled via the holes 17 in the side of the housing on to a baffle 18 which directs the liquid back into the main container. The beater bars 29 may be provided with holes, Figs. 10, 11 (not shown), through which the liquid may pass and a second perforated plate 31, Fig. 6 (not shown), may be carried by the shaft for rotation closely adjacent to the perforated plate 26.  An additional propeller blade may be provided above the beater bars.
Patent GB-825791-A (GB)
Title: Apparatus for optically scanning value-indicating light-transparent areas on records
IPC: G06K7/10
Filed: 1957-05-27
Abstract: 825,791. Photo-electric record scanning. BRUNSVIGA MASCHINENWERKE A.G. May 27, 1957 [July 19, 1956], No. 16744/57. Class 40 (3). Record cards 14 with punched value data holes, each value other than zero being represented by two holes one behind the other in the direction of travel the distance apart of which is an integral multiple of a distance assigned to a unit of value, are passed between a photo-cell 12 comprising a housing 11 with holes 15, disposed behind each other at the unit interval, of a number corresponding to the total number of different values to be scanned and a light 17 so that impulses from the cell are registered on a luminous screen 22 of a decade counting valve 18 where they are detected by light-sensitive cells 0-9 to be recorded or used to control calculating or sorting devices, the valve 18 being advanced one calculating place each time a hole in the record passes a hole in the housing and being returned to zero after receiving a constant number of impulses. Numerals are counted by using ten apertures 15, two parallel rows of ten apertures representing letters. Photo-transistors and photo-electric resistances are mentioned.
Patent GB-814245-A (GB)
Title: Improvements in or relating to circuit arrangements for synchronizing the line deflection circuit in a television receiver
IPC: H04N5/12
Filed: 1955-06-10
Abstract: 814,245. Automatic frequency and phase control systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 10, 1955 [June 14, 1954], No. 16753/55. Class 38 (4). [Also in Group XL (c)] In a television receiver flywheel line synchronizing circuit the flyback pulses derived from the line deflection circuit are arranged at the coincidence detector to overlap the leading edges of the received synchronizing pulses so that the adverse effects otherwise arising due to coincidence with the frame synchronizing pulses are avoided. Also the flyback pulses are made of short duration so that little of the preceding video wave is lost. As shown, positive-going flyback pulses derived from the anode of the sawtooth generating blocking oscillator 30 are differentiated by the anode/ suppressor grid capacitance or by an additional shunt capacitor 47, to form a cosine shape pulse 15 (Fig. 7) and applied to the anode of a coincidence detector tube 23 forming also a sync. separator of a complete video wave 26 applied to its grid (frame sync. pulses being derived from the screen grid at 29). A negative voltage proportional to overlap of the pulses 15, 10 (Fig. 7) is thus obtained and after smoothing by an integrating circuit 48-50 applied as frequency control voltage to the grid of the oscillator 30 additional to the negative self-bias generated by feedback circuit 40, 41. The oscillator circuit is such that increased negative bias on the control grid increases the oscillator frequency, and conversely. This is due to the valve 30 decreasing the anode current through the linearizing and H.T. boosting diode 35 connected across part of the primary of the line deflection transformer and therefore the voltage across it so that the diode 35 sooner becomes non-conductive, whereupon flyback commences. In a modification the flyback pulse is arranged to have third harmonic distortion so that the differentiated pulse takes the form and position 20 (Fig. 9) relative to the received synchronizing pulse 10. The flyback pulse may also be derived from the screen grid of the tube 30.
Patent GB-709939-A (GB)
Title: Deflecting circuit arrangements for cathode ray tubes
Inventor: LEE CYRIL ARTHUR
IPC: H03K4/28
Filed: 1951-07-14
Abstract: 709,939. Saw-tooth generating circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. July 3, 1952 [July 14, 1951], No. 16757/51. Class 40 (6). [Also in Groups XXXV and XXXVI] A pair of deflecting coils 1, 2 for a cathode-ray tube are wound opposite to each other on a closed magnetic core so as to set up opposing fluxes and are connected in parallel directly in the output circuit of a driving valve, an energy recovery circuit being connected to a pair of tapping points 8, 9 disposed similarly on the coils. The tapping points may be connected by a resistor to reduce circulating currents. In the line time base shown the filament of the diode of the energy recovery circuit is heated by connecting it in series in the anode circuit of the driver valve, the capacitor 4 being short circuited until the valve has warmed up. The voltage across this capacitor is used to boost the H.T. supply to the driver valve and provides substantially the whole of the voltage required for the frame time base output valve 15. The Provisional Specification describes a modification in which the diode cathode is connected to the anode of the driving valve and states that when the frame time base includes directly fed deflection coils an auxiliary coil or a permanent magnet may be used for centering the picture.
Patent GB-273700-A (GB)
Title: Improvements in bead wires for wheel tyres
IPC: B60C9/00
Filed: 1927-06-24
Abstract: 273,700. Michelin et Cie. July 2, 1926, [Convention date]. Tyre attachments to rims.-A bead wire comprises a core formed of a plurality of wires a, cabled or otherwise, with a helical wire wrapping. In modifications, the core is wound about a central single wire, and may be formed in multiple layers of corresponding or opposite windings.
Patent GB-296969-A (GB)
Title: Improvements in or relating to hydraulic gears or couplings
IPC: F16D33/10
Filed: 1928-06-11
Abstract: 296,969. Bauer, G. June 11, 1928. Hydraulic transmission of power.-In hydraulic gears or couplings having emptying apertures 4, Figs. 1 and 3, controlled by an axially-movable ring 6, a tight joint is obtained by members, such as rings 13 or bushes 16, thrown into contact with the ring by centrifugal force.