baber/WOPTO huggingface dataset:
Patent GB-1186890-A (GB)
Title: Semiconductor Device
Inventor: SEGERSON EUGENE EDWARD
IPC: H01L23/31
Filed: 1967-06-12
Abstract: 1,186,890. Semi-conductor devices. MOTOROLA Inc. 12 June, 1967 [13 July, 1966], No. 27058/67. Heading H1K. A semi-conductor device is mounted on a plate and is encapsulated with plastics material so that the plate forms one face of the encapsulation, the plate and the encapsulation having an aperture extending therethrough, the arrangement having lead members, one of which is integral with the plate, extending from the encapsulation in a plane parallel to, but offset from, that of the plate. As shown, Fig. 6, the leads 18, 23 and 24 and the plate 12 are formed integrally together with supporting strips 53 and 55 from a sheet of copper plated with nickel. The plate 12 is formed as an extension of the centre lead 18, and the ends of the two outer leads 23, 24 are flattened to form bonding areas 27, 28. As shown, Fig. 2, a silicon transistor die 26 is mounted with its collector region in contact with plate 12, the emitter and collector electrodes are connected by fine wires (34, 35) to bonding areas 27, 28, and epoxy resin is transfer moulded over the top of the plate to encapsulate the ends of the leads 23, 24 and the die 26. The leads are then separated from supporting strip 53 and the parts of strip 55 between the leads are also removed. Plate 12 has side members 21 which extend into the encapsulation 14 to improve the adhesion, and has an aperture 31 which is aligned with an aperture 33 in the encapsulation 14 so that the device can be bolted to a heat sink. The leads lie in a plane offset from that of plate 12 so that they do not contact the heat sink. A plurality of devices can be sequentially mounted and connected and then simultaneously encapsulated by forming a plurality of sets of leads structures connected together by the supporting strips (53, 55), Figs. 3, 4 and 5 (not shown). Strip 53 is provided with groups of apertures 54 by means of which the strip can be moved through assembly machinery.
Patent GB-702504-A (GB)
Title: Improvements in or relating to electric discharge tubes
IPC: H01J25/04
Filed: 1951-11-19
Abstract: 702,504. Inductive-output tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 19, 1951 [Nov. 22, 1950], No. 27081/51. Class 39(1) In an inductive output tube the output system comprises a plurality of identically similar drum shaped cavity resonators 8, 9, 10 whose axial lengths are short relatively to the diameters and arranged coaxially in succession along the path of the beam the front and rear walls of the resonators being respectively connected by straight conductors 17, 18 lying near the beam passage apertures. The electron transit time from the front wall of one resonator to the front wall of the next is about a whole period of the oscillation frequency. The resonators are.disposed within and in good thermal contact with a metal cylinder 1 which has a closed end 20 serving as collector and coated to reduce secondary emission, and an open flanged end sealed to glass cylinder 2. The intensity modulating grid 5 is carried by disc 4 sealed between glass envelope parts 2, 3. Indirectly heated cathode 7 is carried on hollow tube 6 through which the heater supply leads are passed and tube 6 is sealed through glass envelope part 3 near to cathode 7, or remote from it as shown.
Patent GB-1177294-A (GB)
Title: Improvements relating to Moulded Plastics Wheels
Inventor: AUSTIN WILLIAM HENRY LASHBROOK
IPC: B60B5/02
Filed: 1967-06-12
Abstract: 1,177,294. Wheels &c. HILLS INDUSTRIES Ltd. 12 June, 1967, No. 27082/67. Heading B7C. . .. A wheel comprises discs 2, e.g. of polypropylene, each with a rim part 5 and a hub part 4, the rim parts being secured together by moulding a tyre 7 therearound. Shock loads in the direction of arrow 8 are absorbed by axial spreading of the discs (as shown by dotted lines).
Patent GB-1255852-A (GB)
Title: Improvements in or relating to digital transducers
Inventor: CLARK JOHN
IPC: H03M1/00
Filed: 1969-05-29
Abstract: 1,255,852. Shaft position encoders. A. & M. FELL (MFG.) Ltd. 11 May, 1970 [29 May, 1969], No. 27200/69. Heading G4H. [Also in Division H1] A shaft position encoder has two positionencoding discs 5, 6 which are staggered by half a digit position and have sets of wipers 7, 8 and to avoid transitional ambiguity a reed contact unit 16 switches the output from one set of wipers to the other at digit change-over. The reed contact unit 16 is operated by a castellated cup 13, geared to the discs, which either exposes or shields the unit 16 to or from a magnet 14. In another arrangement (Figs. 3 and 4, not shown), the contact unit is operated by a magnet having a polepiece which is completed by one of a number of transfer members arranged around the periphery of a disc coupled to the encoding discs. In a third arrangement, the unit is operated by a coil energized through a commutator (Fig. 5, not shown).
Patent GB-849805-A (GB)
Title: Improvements in or relating to apparatus for stacking or setting-up bricks
IPC: B65G57/26
Filed: 1956-09-06
Abstract: 849,805. Weighing apparatus. EASTWOODS Ltd., and PAISLEY, J. Dec. 6, 1957 [Sept. 6, 1956], No. 27365/56. Class 143 [Also in Groups XVII and XXX] The speed of an endless conveyer 12 of a stacking apparatus (see Group XVII) is controlled by movement of a further conveyer 33 receiving articles from it, the conveyer 33 being pivoted at 34 and its other end spring loaded at 35 so that movement of that end under weight of the articles controls the speed of the motor 32 driving the conveyer 12. Specifications 849,806, 849,807 and 849,808 are referred to.
Patent GB-1145495-A (GB)
Title: Improvements relating to microwave monitering apparatus
Inventor: DUFFEY FREDERIC CHARLES HENRY
IPC: G01R21/00
Filed: 1965-06-29
Abstract: 1,145,495. Micro -wave power movement; reflectometers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 8, 1966 [June 29, 1965], No. 27531/ 65. /Heading G1U. [Also in Division H3] An apparatus for measuring micro-wave power in a waveguide 7, or for use as a reflectometer or to determine the state of match of a load incorporates a probe 6 fitted into the guide wall and connected into the cathode circuit of a grounded grid anode bend detector 1. The output from the cathode circuit of this detector is fed via a shaping circuit 18 and cathode follower 11 to a meter M. The Inter-connections between the probes and the grounded grid triode are all enclosed in a screened box mounted on the guide wall. To use the apparatus as a reflectometer, a magnetic field detector loop 13 is associated with the probe 12 to enable the poynting vector of power flow to be measured. Forward and reverse power flow is then determined by two such units. To determine the state of match of a load, two probes a quarter wavelength apart and equally spaced about the load plane are used and a differential output derived.
Patent GB-795442-A (GB)
Title: Improvements in or relating to apparatus for producing hollow cores for foundry purposes
Inventor: TAYLOR GEORGE WILLIAM
IPC: B22C23/00
Filed: 1953-07-20
Abstract: 795,442. Moulding-machines. POLYGRAM CASTING CO., Ltd. May 25, 1954 [July 20, 1953], No. 27552/55. Divided out of 795,441. Drawings to Specification. Class 83 (1). Apparatus for making hollow cores comprises a container for the moulding-mixture, a conduit for leading the mixture into a core-box, and means connected to a belled mouthpiece on the conduit, for removing excess moulding-mixture. The apparatus is as described in Specification 795,441. Specification 795,443 also is referred to.
Patent GB-1291560-A (GB)
Title: Improvements in the manufacture of super-white cements
Inventor: BORREILL ANDRE BERNARD
IPC: F27B7/00
Filed: 1970-06-08
Abstract: 1291560 White cement CIMENTS LAFARGE 8 June 1970 [9 Feb 1970] 27615/70 Heading C1H Superwhite cement is produced in apparatus comprising a clinker crusher 1 in fluid tight connection with an upstream chamber 17, a downstream chamber 18 of a drum 10 provided with means to rotate it on an axis downwardly inclined 0À5-2À0% to the horizontal, thereby causing the product to progress from the crusher to the outlet of chamber 18, means for maintaining pressure in both chambers and a mainly reducing atmosphere in chamber 17, means -25 in chamber 18 for admitting atomized evaporable cooling fluid, a partition 19 with apertures 21 allowing passage of the product, a closure 12 connected to the upstream end of the drum by a peripheral rotary union 13, the closure comprising a spout 3 associated with a nozzle 5 connected to a source of hot reducing gas, a closure 29 connected to the downstream end of the drum by a similar union 30, and comprising spray jets 25 connected to an evaporable liquid, e.g. water, means 10 2  to evacuate clinker from the drum, and a flue 33. A visor 8 protects the nozzle 5. The amount of water is adjusted according to the temperature of the generated vapour.
Patent GB-463570-A (GB)
Title: Improvements in sliding sash windows
IPC: E05F11/00
Filed: 1935-10-07
Abstract: 463,570. Balanced sash windows. LEEMHUIS, J. C. P. Oct. 7, 1935, No. 27647. [Class 20 (iii)] Sashes 5, 6 of unequal depth, of the kind which are balanced one against the other, by chains or the like 12, so that when reversed by sliding the upper sash 6 down to the sill a ventilation opening 15 is left at the lintel, have the chain secured to blocks which are adjustably clamped to the sashes by accessible screws 17 passing through slots 18. The pulleys 13 are mounted on removable screwed studs 20. Sash lifts 14 may be provided on the lower sash 5. The lower or smaller sash may be weighted with thicker glass than that of the upper.
Patent GB-385256-A (GB)
Title: Improvements in or relating to tubular tools and method of making the same
IPC: B21D53/00
Filed: 1932-10-05
Abstract: 385,256. Wrench &c. handles. LAITER, F., 10 bis, Rue du Montoir, Clamart, Seine, France. Oct. 5, 1932, No. 27671. Convention date, Oct. 5, 1931. [Classes 61 (i) and 61 (iii).] A bent box-spanner or other tool handle is strengthened at the bend by inserting previous to bending a metal filling piece c of smaller diameter than the tube a, then flattening the tube on both sides of the filling piece and finally bending the tube and enclosed filling piece.
Patent GB-503778-A (GB)
Title: Improvements in or relating to pulverised fuel burner feed mechanisms
IPC: F23K3/00
Filed: 1937-10-12
Abstract: 503,778. Delivering material from hoppers; pneumatic conveyers. LAMB, H. T. Oct. 12, 1937, No. 27712. [Class 78 (i)] A fuel burner feed mechanism comprises a downwardly converging feed tube extending from a hopper to an air blast passage, the fuel being fed through the tube by a correspondingly converging rotatable helix. The Figure shows the application to a hopper arrangement as described in Specification 484,513, in which fuel is fed from the hopper 3 through a tube 8 to an air blast passage 6 by a helix 11 on a shaft 12. This shaft is driven from a power shaft 16 through an adjustable roller 15 engaging a friction disc 14.
Patent GB-1145543-A (GB)
Title: Chloropregnanes
Inventor: ADAM GUNTER
IPC: C07J5/00
Filed: 1967-06-16
Abstract: 1,145,543. 20-Chloropregnenes. DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZU BERLIN. 16 June, 1967, No. 27804/67. Heading C2U. Novel 20-chloro-pregnenes of the formula (wherein R is hydrogen or acetyl) and their novel #<SP>1</SP>'<SP>4</SP> analogues are prepared from #<SP>5</SP>- spirosolane alkaloids of the formula by reducing them with NaBH 4  to obtain compounds of the formula Oppenauer oxidation of the latter yields the corresponding 3-keto-#<SP>4</SP> compounds which are then N-chlorinated with N-chlorosuccinimide, the resulting N-chloro compounds being then irradiated with U.V. light in the presence of an acid (e.g. trifluoroacetic to obtain a mixture of isomers (20-S and 20-R) of Formula IV (R = H) which may be separated chromatographically. The #<SP>1,4</SP> analogues are obtainedbydehydrogenation of compounds of Formula IV (e.g. with dichlorodicyanobenzoquinone) and 16#-acetoxy derivatives are obtained from the hydroxy compounds by acetylation
Patent GB-402222-A (GB)
Title: An improved method of constructing the furnace and combustion chamber of a vertical steam boiler
IPC: B23K31/02
Filed: 1932-10-06
Abstract: 402,222. Steam-boiler fireboxes and combustion chambers. RILEY, J., Grangefield House, Oxbridge Lane, Stockton-on- Tees. Oct. 6, 1932, No. 27833. [Class 123 (ii).] One steel sheet is cut, folded, or pressed to form the combustion chamber and part or parts of the firebox sides for a vertical multitubular steam boiler, and a second sheet forms the roof and part of the sides of the firebox. The combustion chamber cap may be made from a third sheet. The front c, backd and sides e of a combustion chamber f are formed by folding and pressing a flat sheet, a vertical joint at the back being welded or riveted. A second sheet is pressed to form sides and the roof m of the firebox and is welded or riveted to the first sheet along the edges i, p. The combustion chamber cap is pressed from a third sheet or may be formed on the first sheet. The back d or part of it is replaced by bricks in a dry-back boiler. The Provisional Specification describes also a modification in which the back and sides of the combustion chamber and the sides of the firebox which is cylindrical or slightly conical are formed by one sheet, a second sheet forming the front and cap of the chamber and the domed roof of the firebox.
Patent GB-1132886-A (GB)
Title: Improvements in castors
Inventor: HOLT ROBERT WILFRED
IPC: B60B33/02
Filed: 1966-06-22
Abstract: 1,132,886. Castors. HOMA ENG. Ltd. 22 Sept., 1967 [22 June, 1966], No. 27901/66. Heading A4U. In a castor, a swivelling assembly 2 which includes a wheel 5, is rotatably mounted on a fixed mounting 1 for a scaffold &c. leg 8, and a rigid, combined wheel brake and swivel lock 11 is mounted on the swivelling assembly by an operating screw 12 which moves the lock 11 between an inoperative position and an operative position in which serrations 11b 11a, respectively, engage the periphery of the rubber-tyred wheel 5 and serrations 7a on the fixed mounting. The operating screw 12 engages a complementarily screwthreaded bore in a part 3c of the wheel fork and has a reduced portion 12a on which the member 11 is retained as a loose fit by a headed screw 14. A head 12b and hexagonal formation 12c are provided for hand or spanner operation. A tubular scaffold leg 8 is secured by bolts 9 in an annular socket formed between a cylindrical peg 7c and a sleeve 7b of the fixed mounting.
Patent GB-322994-A (GB)
Title: Improvements in and relating to printing rollers
IPC: G03F7/24
Filed: 1928-12-22
Abstract: 322,994. Tausz, A., and StÚhlik, F. Dec. 22, 1928. Divided on 323,629. Printing - apparatus; photo-mechanical printing. surfaces.-Etched printing rollers bearing a design to be repeated indefinitely on long strips of fabric &c. are produced by contact printing from a transparent or translucent band bearing the design, which encircles the roller after the manner of a driving belt. The roller a is supported on bearings in a box c fitted with hinged covers c<1>. A baud comprising a transparent portion B bearing the design, and an opaque portion C', passes round the roller and a small roller b. The roller and band are rotated together and printing takes place over the portion of the surface between the covers through the transparent portion of the band, To prevent slip, the roller a may bear teeth and the band may be perforated. The bearings of the roller a may be made adjustable for tightening the band.
Patent GB-603537-A (GB)
Title: Process for the manufacture of 1-úõ-ribitylamino-3.4-xylol
IPC: C07H5/06
Filed: 1945-10-23
Abstract: 1-d-Ribitylamino-3 : 4-xylol is obtained by reacting d-ribose in the presence of at least 1 mol. of boric acid with 1 mol. of 3 : 4-dimethylaniline per mol. of d-ribose in a solvent miscible with water at a pH of about 4 and hydrogenating using a Raney nickel or palladium charcoal catalyst in the presence of an alcoholic solvent at a temperature not exceeding 60 DEG  C.  In examples: (1) d-ribose and boric acid in water are reacted with 3 : 4-dimethylaniline in alcohol and the product hydrogenated using a Raney nickel catalyst to produce 1-d-ribitylamino-3 : 4-xylol; (2) as in (1) using acetone instead of alcohol as the solvent; (3) d-ribose and d-arabinose in water are reacted with 3 : 4-dimethylaniline in alcohol, whereupon only d-ribose forms a condensation product which is worked up as in (1); (4) d-ribonic acid lactone is reduced in the presence of boric acid using a mercury cathode and the product condensed with 3 : 4-dimethylaniline followed by hydrogenation.
Patent GB-643886-A (GB)
Title: Improvements in and relating to cooling processes and machines
IPC: F25B9/00
Filed: 1947-10-20
Abstract: 643,886. Refrigerating. RUHEMANN, M., and PETROCARBON, Ltd. Oct. 20, 1947, No. 28028. [Class 29] In a compression refrigerating process operating with a mixture of refrigerants of different boiling points, condensation is effected in at least two steps, the liquid and gaseous portions resulting from the first step being physically separated, the gaseous portion, or part thereof when there are more than two condensation steps, being condensed in the next step by evaporation of the liquid portion. Refrigerant is compressed by compressor 13, cooled in a watercooled coil 14, partially condensed in a water-cooled coil 18 and cooled in a chamber 23 by cold gas coming from the evaporators. The droplets formed are agglomerated by a member 28 and the liquid is further cooled in a coil 29 cooled by cold gas coming from the evaporators, the condensate flowing in part through a valve 36 to evaporate in chamber 40 and in part through valve 35 to evaporate in chamber 37. The gaseous portion is condensed in the chamber 40 and flows through valve 42 to evaporate in chamber 43. Cold gas from the evaporator chambers 37, 40, 43 flows through chambers 30 and 23 to the compressor suction. The cooling of the load is effected by the evaporators 37 and 43 but if all the liquid portion is needed to condense the gaseous portion in chamber 40, the evaporator 37 is omitted. Ethylene and propane in equi-molecular proportions may constitute the refrigerant. If the first condensation step is effected by the evaporator of another refrigerating system, the refrigerant mixture may be ethylene and methane. An additional evaporator operating at a still lower temperature may be used if three refrigerants are used, e.g. propane, ethylene and methane. The evaporators 37, 43 may be used to separate gaseous mixtures by condensation. On starting up, the compressor draws refrigerant from a reservoir 11. The coils in the vessels 37, 40, 43 may be formed round hollow cores up which the evaporated vapours pass. According to the Provisional Specification the following mixtures of refrigerant may be used: propane and ethane; ammonia and nitrous oxide; ethane and methane; a mixture of saturated and unsaturated hydrocarbons.
Patent GB-1118479-A (GB)
Title: Hydrogenation process
IPC: C10G45/00
Filed: 1967-06-19
Abstract: In the liquid phase catalytic hydrogenation of petroleum resins in a hydrocarbon solvent, water or ammonium hydroxide are added in amounts not in excess of the solubility thereof in the petroleum resin and hydrocarbon solvent under the reaction conditions whereby the colour of the resulting hydrogenated petroleum resin is improved.  The hydrogenation catalyst may be nickel on kieselguhr, nickel on alumina or nickel/aluminium alloy.
Patent GB-1348688-A (GB)
Title: Azo dyestuffs and processes for their manufacture
IPC: C09B44/08
Filed: 1971-06-16
Abstract: 1348688 Azo dyes CIBA-GEIGY AG 16 June 1971 [8 July 1970 23 April 1971] 28103/71 Heading C4P New azo dyes, free of acidic water-solubilizing groups, of formula wherein Y is a C 1-4  alkylene or alkyleneoxy group, A is OH or NH 2 , B is H, alkyl, alkoxy or aryl, or if A is OH, a carboxylic acid ester or amide group, Q is arylene, Z is an optionally quaternized amino, hydrazino or etherified hydroxylamino group and D 1  is the residue of an aromatic-carbocyclic or -heterocyclic diazo component, which may contain an azo group are prepared by (i) azo coupling using appropriate components, (ii) condensing dyes of the above formula but wherein Z is replaced by a replaceable atom or group (e.g. halogen or sulphonic acid ester) with ammonia, an amine, hydrazine or etherified hydroxylamine and (iii) quaternizing the product of (i) or (ii) containing a tertiary N atom. The dyes are used to colour synthetic and semi-synthetic fibres, in particular polyacrylonitrile, in yellow to red shades.
Patent GB-146773-A (GB)
Title: Improved building blocks or slabs made of concrete or cement
IPC: E04B2/02
Filed: 1919-04-22
Abstract: 146,773. Wilson, W. April 22, 1919. Walls.-For use in building and structural work, a rectangular concrete or cement block or slab is formed with marginal flanges 1 extending along the ends and partially along the sides, the central gaps 2 thus formed being half the length of the block. One or more cross ribs 4 projecting from the body of the slab are provided, and keying grooves 6 and 6a extend along the marginal flanges. The slabs are laid on edge in rows, the slabs of one row alternating with the slabs of the other row, the projecting marginal flanges of the slabs in each row engaging with the gaps in the slabs of the other row.
Patent GB-901079-A (GB)
Title: Purifying furfural
IPC: C07D307/48
Filed: 1960-08-15
Abstract: <PICT:0901079/III/1> Furfural, which has been used for the solventextraction of hydrocarbons and is contaminated with furfural-polymer, soluble hydrocarbons and water, is purified by feeding the impure furfural through pipe 4 into a fractionating tower 9, and introducing superheated steam into a lower section of the tower through pipe 34; vapours of the furfural/water azeotrope together with the hydrocarbon impurities pass off overhead, purified furfural is withdrawn from the side of the tower through pipe 41, and furfuralpolymer is withdrawn through pipe 35.  The feed-pipe 1 is connected to the tower via heater 2 and separator 3; and a mixture of vaporized and liquid furfural, at a temperature of 320 DEG F. and a pressure of 20 p.s.i.a., passes through pipe 4 into the tower, approximately half of this mixture being vapour.  The overhead vapours pass to condenser 14; and the condensate is collected in phase-separation tank 16, maintained at 15 p.s.i.a., where three liquid-layers are obtained.  The furfural phase 19, which is saturated with water, is pumped through pipe 26 to serve as reflux for the tower.  The hydrocarbon layer is withdrawn from the tank via pipe 20.  The water phase, which is saturated with furfural, flows out of tank 16 through pipe 36; part of this water is withdrawn from the system through pipe 43, but the bulk of it is pumped into the tower through pipe 36a.  The base of the tower is maintained at a temperature of 228 DEG F. by means of heater 40; and vapours of the furfural/water azeotrope are formed just below tray 33, while water, free from furfural, is withdrawn from the bottom of the tower through pipe 38.  An intermediate heater 32 is provided for the middle section of the tower.