baber/WOPTO huggingface dataset:
Patent GB-869584-A (GB)
Title: Improvements in or relating to the preparation of semiconductors
Inventor: SHEARD ANTHONY ROBERT
IPC: C01B19/00
Filed: 1958-10-22
Abstract: A semiconductor of general formula X2Y3 where X is Bi, Sb or As and Y is Te, Se or S and in particular bismuth and antimony tellurides and bismuth selenide is prepared by mixing powders of the relevant elements in stoichiometric proportions and subjecting the mixture to heat treatment in an inert atmosphere below the melting point of the desired semiconductor compound and preferably above the lower of the respective melting points of the two constituent elements.  Heating at 550-575 DEG C. is generally necessary.  The resulting porous mass is then powdered, and semiconductor bodies may be formed by sintering such powder.  If more than one of the elements of either X or Y are to be employed they should preferably initially be intimately mixed, melted, solidified and powdered.  Donor impurities such as iodine, bromine, chlorine, copper, silver and lithium or acceptor impurities such as cadmium and lead may be introduced into the product by incorporating them in the powdered starting material. According to the Examples (1) powdered bismuth and tellurium in 2/3 atomic ratio were heated in a sealed silica container which had been evacuated to 10-5 mm. Hg., to a temperature of 550-575 DEG C.  The bismuth telluride product was readily crushable.  (2) Bismuth and antimony in a 1/3 ratio were melted at 700 DEG C., solidified, crushed and then placed in an evacuated silica container with powdered tellurium whereby a final product of formula Bi0.5Sb1.5Te3 is produced. (3) As in (2) above except that the bismuth and antimony were in equimolecular amount and the final product had a formula BiSbTe3. (4) Tellurium and selenium in 2/1 ratio were melted, solidified, and powdered: bismuth was melted with 0.8% by weight of copper, solidified and powdered; the two powders were then heated in a silica container to give bismuth selenotelluride of formula Bi2Te2Se. Semiconductor bodies may be formed from the powders by hot pressing the powder at 300 DEG C. and 5,000 kilograms per square centimetre. The body so formed may be heated at 250-400 DEG C. for up to ten days in an evacuated container. The products of Examples (1), (3) and (4) were N-type, and that of Example 2 was P-type.
Patent GB-341166-A (GB)
Title: An improved method of constructing the floors of buildings
IPC: E04B5/32
Filed: 1929-11-06
Abstract: 341,166. Centring for concrete floors and ceilings. RICHARDSON, J. O. C., Abbey House, Victoria Street, London. Nov. 6, 1929, No. 33800. [Class 20 (ii).] A centring for concrete or like flooring, of the kind carried by beams entirely encased by the concrete or the like and wherein boards or plates suspended from the beams are spaced therefrom by spacer blocks, comprises arched sheets spanning the space between adjacent beams and supported by the boards, the edges of the sheets being located by abutments formed on the boards or plates. As shown, an H-section joist 2 has suspended from the lower flange thereof a number of L-shaped bolts 7 arranged in pairs. The bolts 7 pass through holes in a plank 8 which is spaced from the joist 2 by a number of spacer blocks 10, and is secured in position by nuts 9. The planks 8 carry strips 11 which support the edges of plain or corrugated arched centring sheets 3, preferably of sheet metal, which bridge the space between adjacent joists. Nails 13 are driven into the strips 11 and the protruding heads thereof provide abutments for the edges of the sheets 3. Concrete 4, reinforced by steel rods 5, is poured on the centering to the desired height and when it has set the plank 8, strips 11 and the centring 3 are removed. The protruding heads of the bolts 7 may be used for supporting temporary ceilings or machinery or they may be sawn off. The spaced blocks 10 are preferably of the same material as the floor and form a fireproof covering for the joists when these are of wood. A further reinforcement may be provided by winding steel wire around the joist in a spiral manner from end to end. In a modification, a number of short lengths of steel wire are passed over the joist at spaced intervals and are employed to support the plank 8. In a further modification, the strips 11 are dispensed with and the centring 3 abuts against nailsd riven through the plank 8. The plank 8 may be strengthened in each case by T-iron secured to the lower surface thereof.
Patent GB-1155970-A (GB)
Title: Improvements in or relating to a Vibratory Feeder and an Escapement Therefor.
IPC: B29D30/66
Filed: 1966-07-27
Abstract: 1,155,970. Studs for tyre treads. AYLESBURY AUTOMATION Ltd. (Automation Devices Inc.). 27 July, 1966, No. 33809/66. Heading B7C. [Also in Division B8] Studs for tyre treads have tips 16 made of carboloy (Registered Trade Mark) and are shaped as shown in Fig. 2.
Patent GB-874253-A (GB)
Title: Improvements in and relating to carbonaceous articles
IPC: C10L5/14
Filed: 1958-10-23
Abstract: A carbon article is produced by the passage of an electric heating current through a shaped mixture of calcined coke powder, a carbonisable binder, e.g. pitch, having a m.p. of not above 300 DEG C. and more than 3% of sulphur.ALSO:Carbonaceous articles are obtained by shaping, pressing, and heating by electric current, a mixture of comminuted carbonaceous material and a binder mixture comprising a fusible carbonacious material of a M.P. not above 300 DEG C. and more than 3% of sulphur. Various pitches are specified for the fusible carbonaceous material, and calcined coke for the comminuted material.
Patent GB-889789-A (GB)
Title: Improvements in or relating to the recovery of naphthalene from petroleum fractions
IPC: C10G45/60
Filed: 1960-10-04
Abstract: Naphthalene is recovered from a feed stock also containing alkyl benzenes by eliminating compounds having a higher boiling point than naphthalene, hydrodealkylating at above 1200 DEG F. in the presence of hydrogen and a catalyst containing 10%-15% chromium oxide on a high purity, low sodium content, gamma alumina, and separating naphthalene from the dealkylated product.  The feedstock may be a reformed naphtha, alkylnaphthalenes being removed by distillation or alkylhydronaphthalenes being removed from the original feed before reforming, an aromatic extract from a kerosene, a light cycle oil from a fluid catalytic cracking from which paraffins and olefins may be removed by hydrocracking or a coal tar product; sulphur impurities are removed during the dealkylation.  The feed may have an end point of about 450 DEG F. and is treated at 1200 DEG F.-1400 DEG F., 100-1,000 p.s.i., and 0.5-3 wt./hr./wt., with a hydrogen to hydrocarbon mol ratio of 3-10 : 1.  The catalyst may be used in a fixed or moving bed.  Benzene, toluene and naphthalene are recovered by fractionation.
Patent GB-383444-A (GB)
Title: Protective tubular casings for electric cables or wires
IPC: F16L11/16
Filed: 1931-12-08
Abstract: 383,444. Metal tubes. MEYERKELLER ET CIE AKT.-GES., O., 45, Kellerstrasse, Lucerne, Switzerland. Dec. 8, 1931, No. 34006. Convention date, Dec. 8, 1930. [Class 99 (ii).] A metal tube, intended to be used as a protective casing for electric cables &c. and capable of being bent, is made from a helically wound strip a. The strip is bent at both margins into flanges disposed substantially perpendicularly to the body thereof, one of the flanges being folded into U-shape c, d, Fig. 1, to embrace closely the other flange b. The tube may be lined with paper e, Fig. 4, during manufacture, the paper being in strip form and having both margins engaged between the interengaging flanges of the metal strip.
Patent GB-1375069-A (GB)
IPC: B65G69/00
Filed: 1972-07-20
Abstract: 1375069 Distributing material J FUCHS 20 July 1972 [22 July 1971] 34083/72 Heading B8A Material from a conveyer outlet 13 is distributed by an inclined plate 1 rotated by the flowing material, the rotation causing the plate to follow also an orbital path about an axis parallel to the direction of flow of the material. As shown, the plate 1 is connected to a wheel 4 by a flexible drive shaft 14, the wheel engaging a fixed track 8 which supports, via bearings 9, a rotatable ring 7 carrying the wheel 4 and the plate 1. The angle of inclination of the plate 1 is adjustable. In other embodiments (Figs. 2-5) the plate 1 is carried by a rotatable shaft and carries a wheel 4 engaging a fixed track coaxial with the shaft, or the wheel 4 is driven by a vane situated on the path of the flowing material.
Patent GB-1139995-A (GB)
Title: Housing for an electric motor clutch-brake assembly
Inventor: FAUTH JOHN MORGAN
IPC: H02K7/112
Filed: 1967-07-25
Abstract: 1,139,995. Casings for dynamo electric machines. SINGER CO. 25 July, 1967, No. 34121/67. Heading H2A. A resilient end shield member 8 is used to seal the inner end of a motor driving a pulley through a clutch / brake mechanism. The assembly comprises a cylndrical housing 10 having a motor chamber 18 and a clutch brake chamber 20 defined by a partition web member 16 which supports the inner motor bearing and has tapped holes 36 which co-operate with screws 44 to secure the outer end cover 24 in position. A plurality of spaced apart axial single and double ribs (28), (30), (Fig. 3, not shown), support stator core 40 and are provided with shoulders 38 against which the core is pressed when end cover 24 is secured in position. Shield member 8 (see also Specification 1,139,996) is shaped to lie against web 16 with its dished ends against the stator core and is made of sheet metal. Cooling air is drawn axially along the outside of the stator core through passages 140 and through apertures 92 in the web by the action of fan blades 90 on flywheel 80. The clutch/brake mechanism comprises disc 68, coated on both sides with friction material, which is mounted on shaft 64 which is axially moved by lever 84 so that the disc engages either flywheel 80 or brake yoke 74. Clearance between the disc and brake yoke 74 is adjusted by screw 78.
Patent GB-1301004-A (GB)
Title: Method and apparatus for cleaning contaminated industrial gases
Inventor: GARDENIER HUGH EMORY
IPC: C21C5/40
Filed: 1970-07-14
Abstract: 1301004 Cleaning gases H E GARDENIER 14 July 1970 [17 July 1969] 34127/70 Heading B1R [Also in Division Fl] Contaminant particles are removed from a gas stream, e.g. a waste gas at 200-3500F, by introducing a pre-heated cleansing liquid (e.g. water) into the gas stream through a nozzle 9 (see Fig. 1) so that part of the liquid is vaporised and part atomised and accelerated to at least 200 ft./sec. greater than the velocity of the. gas stream, passing the gas stream, and cleansing vapour and liquid to a mixing zone 10 downstream of the nozzle where entrapment of the particles in the atomised droplets of cleansing liquid occurs with creation of a region of reduced pressure, and passing the effluent mixture to a gas-liquid separator 12, the clean gas being vented. Preferably a coolant liquid (preferably, also water) is introduced into the mixture through inlets 11 prior to entry to the separator. The cleansing liquid may be pre-heated by indirect heat exchange 5 with the contaminated gas stream upstream of the nozzle. When the gas stream contains a combustible component this may be ignited and combustion maintained by an externally fed burner. The decontaminated gas stream may also be ignited and the cleansing liquid pre-heated by indirect heat exchange (see Fig. 5, not shown) with the combustion products of the decontaminated gas stream. The nozzle comprises a throat and an exit portion of progressively increasing crop-sectional area away from the throat.
Patent GB-974269-A (GB)
Title: A double clutch
IPC: F16D21/06
Filed: 1963-08-29
Abstract: 974,269. Friction clutches. F. A. E. PORSHE. Aug. 29, 1963 [Sept. 14, 1962], No. 34245/63. Headings F2C and F2L. In a double disc clutch 5, 4 for driving a tractor main transmission and power take-off shafts 12, 8, respectively, and operated by radial release levers 19, 39 and throw-out sleeves 16, 15, the latter includes a dish-shaped member 27 with outer and inner cylindrical portions 31, 32 and an intermediate conical portion 33. When member 15 is moved to the left to disengage the auxiliary clutch 4, the tail ends 41 of release levers 39 first move over the conical surface 33 and then enter the inner centring cylindrical portion 32 and abut against the end of the outer portion 31, thus relieving the sleeve bearing 26 of load from the pressure springs 13 between the clutches.
Patent GB-1483333-A (GB)
Title: Postal mechanisation systems
IPC: B07C3/20
Filed: 1974-10-17
Abstract: 1483333 Letter sorting PLESSEY CO Ltd 17 Dot 1974 [18 July 1973] 34267/73 Heading B8A Letters in an overlapping sequence are fed between a pair of opposed endless conveyers 7 to a similar pair of conveyers 8, and thence to a viewing position 11 in front of a letter sorter operator's selection keyboard 6. A plurality of keyboards 6 and associated feed conveyers 7, 8 are fed by a single conveyer leading from a de-stacking device (Fig. 3). This comprises a conveyer having spaced partitions 25, between which stacks of letters are placed. Each partition 25 has a horizontally cut-away part which registers at a de-stacking zone with an endless suction-belt 27. The latter feeds each letter successively to a pair of feed pinchwheels 36-37. The framework of the belt 27 is pivotally mounted at 30 and subject to a loading spring 33. When the letters are too tightly jammed between the partitions 25, the suction belt assembly is thus tilted against the spring 33 and the drive is discontinued.
Patent GB-870575-A (GB)
Title: Benzothiadiazines and the production thereof
Filed: 1958-10-28
Abstract: The invention comprises compounds of the general formula: <FORM:0870575/IV (b)/1> and their alkali metal salts, and the preparation thereof by heating a compound of the general formula: <FORM:0870575/IV (b)/2> with formic acid and, if desired, neutralizing the product with an alkali metal hydroxide.  The products are useful as diuretic and antihypertensive agents in the treatment of congestive heart failure.  Specification 870,576 is referred to.
Patent GB-1409849-A (GB)
Title: Photographic light-sensitive materials
IPC: G03C1/85
Filed: 1973-07-19
Abstract: 1409849 Photographic antistatic layers FUJI PHOTO FILM CO Ltd 19 July 1973 [22 July 1972 24 Oct 1972] 34538/73 Heading G2C An antistatic surface layer for photographic light-sensitive materials, e.g. silver halide materials, contains a binder other than gelatine and a compound of the formula:- wherein R and R<SP>1</SP> each represent an aliphatic hydrocarbon residue of 1-22 carbons, the sum of the carbon atoms of R and R<SP>1</SP> being 6 to 40, A is a divalent aliphatic hydrocarbon residue of 4 to 8 carbons, M is hydrogen, a metal atom e.g. alkali-metal, Mg, Ca, Ba, Zn or Al or a quaternary ammonium group and m is the valence of M. The antistatic compound may be incorporated in a backing layer having a binder of a cellulose ester or ether or of a synthetic polymer.
Patent GB-295541-A (GB)
Title: Improvements in carriagework and mudguards for motor vehicles
IPC: B62D25/16
Filed: 1927-12-21
Abstract: 295,541. Picard, A. Levy-. Dec. 21, 1927. Wheel-guards comprise a bar of semi-hardened rubber which is able to be returned to its normal condition or position when it has been dented or bent by a force sufficiently large to deform it. The rubber may be reinforced by an internal or external metallic fitting.
Patent GB-922502-A (GB)
Title: Improvements in and relating to a method and a machine for producing a web of textile fibres held together by a binder
IPC: D04H1/655
Filed: 1961-09-28
Abstract: <PICT:0922502/IV(a)/1> <PICT:0922502/IV(a)/2> <PICT:0922502/IV(a)/3> <PICT:0922502/IV(a)/4> A bonded web of textile fibres is produced by continuously rotating a single perforated cylindrical wall 16, continuously forming a web of fibres on the wall, agglomerating the web by a binder, drying the web on the wall and removing the dried web from the wall.  Fibres are deposited on an endless belt 42, fed by rollers 43 to a spiked cylinder or picker 44, raised by a duct 45 on to a rotating, perforated cylinder 48, divided and dispersed by a picker 49 and a brush 50 and deposited to form a web n1 on the wall 16 by air issuing through a grid 31, the air being continuously circulated through a duct 41 by a fan (not shown).  A hot or cold liquid containing a binder is supplied by a pump 69, Fig. 2, to a jet 57 which sprays it on to the portion n2 of the web.  A fan 61 creates suction in a casing B2 and air is discharged at 63.  The liquid flows to hydraulic seal 65 whose overflow flows through a wire netting 68 into a tank 67 and is recirculated.  The air withdrawn from the casing B2 may be recirculated so as to return to the web fibres or binding powders, granulated cork or active charcoal incorporated therein.  Air or gases pass through a chamber 77 containing tubes 80 through which combustion gases pass from a burner 79 in a chamber 78. The heated gases pass from a casing C1 through the web n3 to a casing C2 and are recirculated by a fan (not shown).  Infra-red radiators may be positioned in the casing C1.  The web is separated from the wall 16 by a strip 83 or by compressed air, passes between rolls 84, 85 and may pass between cooled rolls to impart a uniform thickness thereto.  The wall 16 is cleaned by compressed air supplied by perforated tubes 89 and by rotary brushes 90.  A felt strip 92 or brush deposits oil, grease, wax or varnish having a silicone base on the wall 16 to prevent adhesion of the web thereto.  In a modification, Fig. 4, two different types of fibre are fed into two casings 94, 95 from pickers 98 to form a laminated web. In a further modification, Fig. 5, to form a web comprising outer layers p, q and an inner layer r preferably constituted by cork or active charcoal, the cork is fed from a hopper 101 through a metering device comprising a rotating disc 104 to a chamber 116 and deposited on the layer p.
Patent GB-1469614-A (GB)
Title: Package articles
IPC: B65D75/64
Filed: 1975-08-22
Abstract: 1469614 Opening shrunk wrappers UNION CARBIDE CORP 22 Aug 1975 [26 Aug 1974] 34883/75 Heading B8C A package comprising an overwrapping of a resilient shrink fitted film having an area 29 of low tensile stress relative to the stress obtaining in another area 31 has a package opening grip defined by a finger gripping hole 33 in the low tensile stress area 29, and adjacent the hole a tear initiating line 35 extending from an exposed edge of the film into an area 29. The line may be constituted by a cut, a perforated line or by the end of a seal. The hole 33 is formed by inserting a dowel in the film before shrinkage and removing it afterwards. The package may contain shirred food casings 13 or meat.
Patent GB-1349436-A (GB)
Title: Smoothing dies
IPC: B29C48/90
Filed: 1972-07-26
Abstract: 1349436 Smoothing cable sheaths INDUSTRIE PIRELLI SpA 26 July 1972 [26 Aug 1971] 34895/72 Heading B5A In the manufacture of a cable sheathed with rubber or plastics to which is applied an armour of a concentric neutral conductor, extending generally longitudinally and sinusoidally and which is caused to penetrate the sheath by drawing through a die, the diameter of the sheath prior to application of the armouring is adjusted by passage through the adjustable diameter bore of a resilient annular sizing member 11, e.g. of hardened and rectified steel. The adjustability of the bore is permitted by a slit 15 extending through the member 11 at 45 degrees to the bore axis, and is effected by camming means acting radially inwardly upon the member 11, via thrust means which may comprise pawls, cylinders, springs, or as in the described embodiment, balls 16 which are radially displaced by the axially displaceable frusto-conical camming surface 17 of a member 31. The surface 17 may alternatively by cylindrical, with the outer surface of member 11 being frustoconical, or both these surfaces may be cylindrical with the camming surface provided by the thrust means. In the described embodiment, the sizing is effected by the leading edge 14 of the member 11, opposed faces 34, 34<SP>1</SP> of which, Fig. 2, are located in abutment with surfaces 20, 19 respectively of a member 26, Fig. 1, and a member 23 located therewithin. The camming surface 17 is provided on a ring nut 31, in threaded engagement 27 with member 26 for axial displacement of the surface 17 upon rotation from knobs, e.g. 33. The nut 31 is locked by a screw 35 engaging therebetween and a piece 3111 thereof partially separated therefrom by a notch 36. The adjustment of the member 11 is indicated between a notch 28 and a scale, respectively on the upstream faces of the nut 31 and member 26.
Patent GB-940432-A (GB)
Title: Improvements in or relating to pressing machines
IPC: D06F71/28
Filed: 1960-10-12
Abstract: 940,432. Ironing presses. KANNEGIESSER & CO. MASCHINENFABRIK G.m.b.H. Oct. 12, 1960 [Nov. 20, 1959], No. 34919/60. Heading D1A. Apparatus for pressing coat-like garments comprises sleeve-supporting members 12, 12a which can be displaced relative to one another to enable both sleeves of the garment to be placed thereon and then returned to a position conforming to the normal pattern of the garment, co-operating members 23, 24, 23a, 24a being provided for pressing the sleeve portions of the garment. In Fig. 3 the sleeve members 12, 12a are shown in dotted lines in the loading position and in full lines in the position ready for pressing. The sleeve members are mounted on a support 11 which can be moved into and out of the pressing machine 10 and are pivotable about axles 13 by a fluid pressure operated cylinder through linkage seen in Fig.4 (not shown). The pressing members 23, 23a are connected by a pressing shoe 22 for collar and shoulder regions. The whole assembly 22, 23, 23a is suspended by springs 27 and moved to pressing position by a pressure cylinder 28. The pressing members 24, 24a are operated by pressure cylinders 26, 26a through linkage 25, 25a. The sleeve members 12,12a are provided with stretching fins 17,17a articulated at 19 and subject to the action of a spring 18 and a pressure cylinder 20. In a modification the sleeve members 12, 12a are movable from an in-line position (Fig. 8 not shown) to the loading position (Fig. 9) by means of pressure cylinders and cam slots 29 engaged by rods 30 which support the sleeve members.