baber/WOPTO huggingface dataset:
Patent GB-942135-A (GB)
Title: Improvements in and relating to the manufacture of semiconductor devices
IPC: C25F3/12
Filed: 1960-01-15
Abstract: <PICT:0942135/C3/1> <PICT:0942135/C3/2> A method of treating, e.g. etching or plating, the surface 32 of a semi-conductor 23 comprises directing a jet 27 of a liquid against a portion 31 of the surface so as to form a sheet of liquid 33 flowing outwardly away from the portion 31 and breaking up into drops 36 in a region 35 remote from the portion 31, and directing a current of gas, e.g. air, across the sheet 33 with such a velocity as to carry the drops 36 away from the region 35 without reversing the flow of liquid in the sheet 33.  The semi-conductor 23 is mounted in a closed-ended housing 10 the other end of which is connected to an air pump which discharges into a reservoir from which liquid is pumped to a nozzle 20.  The housing 10 may be transparent and be illuminated from directions 25, 26.  An air current 37 is drawn in at 29 and traverses the sheet 33 diametrically, removing the drops 36 mainly from an arc of the periphery 34 of the sheet 33 located downstream of the portion 31, the speeds of the pumps being suitably adjusted.  In the modification, Fig. 5 (not shown), the workpiece 23 is introduced longitudinally into the end of the housing 10, which is open at both ends, and opposed jets of liquid are delivered radially into the housing.  In another modification, Fig. 6, the workpiece 23 is supported transversely of the housing 70 and a jet 75 is delivered normal to the workpiece 23 and axially of the housing 70 which is again open at both ends, the air stream 81 carrying the drops 78 from the periphery 80 of the sheet 79.  An electrode may contact the liquid where electrolytic etching or plating is required.
Patent GB-312202-A (GB)
Title: Improvements relating to rotary hammers
IPC: B25D11/06
Filed: 1928-01-17
Abstract: 312,202. Wagner, G. E., and Soc. Anon, d'Exploitation des Brevets Georgevitch et Wageor pour des Marteaux Rotatifs (Margeowa). Jan. 17, 1928. Percussive tools.-In a centrifugal hammering tool comprising two or more cam-controlled strikers sliding on the arms of a rotating frame 1, the cam track is so shaped that the strikers are in contact therewith throughout, except just at the moment ot impact, that is, whilst the frame is moving through the angle AOB. For balancing purposes the opposite angular part A<1>OB<1> of the cam track is shaped to conform to the trajectory of a striker freely moving, as is the angular part DOA. The rising part BOA' may be a spiral or any other suitable curve, and the end 8 of the cam is made resilient. Specifications 201,124, 260,879, and 260,880 are referred to.
Patent GB-682366-A (GB)
Title: Seed and fertilizer broadcaster
IPC: A01C15/04
Filed: 1951-01-22
Abstract: 682,366. Manure distributers. GOUMENT V. O. May 10, 1951 [Jan. 22, 1951], No. 1596/51. Class 6(i) A powder or seed blower, employing engine exhaust gas as the carrying medium, comprises a hopper H mounted on a motor vehicle behind the radiator A and feeding material to a platform B by means of an apertured drum N (Fig. 2) rotating in a housing D. A fishtail nozzle C, connected to the engine exhaust-pipe, is mounted adjacent to the platform B, which, according to the Provisional Specification, carries. adjustable vanes and is tiltable to alter the direction of distribution. The rate of distribution is controlled by a shutter G in the hopper base and by the rate of rotation of the drum N. The drum is keyed on a driving shaft carrying a cog-wheel E which is rotated, step-by-step, by studs L, M on an endless belt K driven by the engine. The belt is perforated throughout its length to receive varying numbers of studs L, M for varying the rate of feed. To ensure intermittent motion of the drum. the wheel E may be associated with a. double-pawl device Fig. 4 (not shown Instead of the recessed drum shown in Fig. 2, the drum may be smooth and carry up standing rubber partitions on its surface, between which the seed or fertiliser ledges. To terminate distribution the driving shaft of the drum N is pulled backwardly, thus freeing the cog-wheel from the studs L, M.
Patent GB-1169104-A (GB)
Title: A method of Achieving a prolonged Refining Effect in Aluminium-Silicon Alloys
Inventor: THIELE WOLFGANT
IPC: C22C21/02
Filed: 1967-01-11
Abstract: 1,169,104. Refining aluminium-silicon alloys. METALLGESELLSCHAFT A.G. Jan.11, 1967 [Jan.13, 1966], No. 1644/67. Headings C7A and C7D. Al alloys containing 5-14% Si are refined by adding to the melt 0À001-2% Sr or Sr and Ba. Alloys which may be refined are (a) Al Si alloys containing Mg (e.g. 5, 7 or 10% Mg), or Mg plus Zn (e.g. 10% Mg + 8% Zn), together with usual impurities i.e. Cu, Mn, Fe, Ni, Ti, Pb, Sn in a total amount not exceeding 8%, and (b) Al Si alloys containing Cu (e.g. Cu 4%) together with usual impurities, i.e. Mg, Zn, Mn, Fe, Ni, Ti, Pb, Sn in a total amount not exceeding 8%. The Sr/Ba may be added as pure metals; alloys (e.g. of Al); or compounds, e.g. oxide, sulphate or carbonate, in admixture if desired with alkali metal salt or finely-divided metal such as Al or Mg. Exemplified alloys consist of (1) Al 7-Si 0À65-Mg 0À1-Sr, (2) A1 12-Si 0À3-Sr, (3) Al 9À7-Si 0À1-Sr, (4) 8À2-Si 9À7-Zn 0À36 Mg 0À1-Sr, and (5) Al 8À6-Si 3À6-Cu 0À1-Sr. Example (1) was heat-treated at 535 C, water-quenched, aged at room temperature, and hardened at 160C.
Patent GB-1028722-A (GB)
Title: Improvements in or relating to the manufacture of polyurethane foams
Inventor: AITKEN ROXBURGH RICHMOND
Filed: 1964-01-14
Abstract: Foamed polyurethane materials are prepared by a process which comprises reacting an organic polyisocyanate with a hydroxyl group-containing polyether which is a copolymer of tetrahydrofuran and a 1,2-alkylene oxide and contains 60-85% by weight of oxytetra-methylene units.  Particularly suitable alkylene oxides are propylene oxide, butylene oxide or a mixture thereof.  The copolymerization of the tetrahydrofuran and alkylene oxide may be carried out in the presence of a polyhydroxy compound such as butane 1,4-diol or 1,2,6-hexane triol.  Suitable catalysts for copolymerization include strong acids and Friedel-Crafts catalysts (particularly boron trifluoride). Surface-active reagents, foam-stabilizing agents, colouring matters, fillers, plasticizers, flame-retardants and antioxidants may be incorporated into the foam. Gas-generating agents for a one-shot process include water and inert low boiling, halogenated hydrocarbons, such as methylene chloride, and mixtures of the two.
Patent GB-977138-A (GB)
Title: Steel alloy
IPC: C22C38/22
Filed: 1962-01-17
Abstract: An alloy steel, particularly for making rolls, contains in percentage by weight: .C.0.65-0.80 .Mn.0.10-0.35 .Cr.0.60-1.10 .Mo.0.45-0.70 .V.0-0.15 .Fe.balance Silicon may be added as a deoxidizer in the range 0.20-0.35% In an exemplified heat-treatment a roll was austenitized at 1550  DEG F., after equalization at 700  DEG F. and 1250  DEG F., quenched, and tempered at 300  DEG F. for 120 hours.
Patent GB-1448216-A (GB)
Title: Humidifiers
IPC: F24F6/04
Filed: 1973-01-12
Abstract: 1448216 Humidifier R S HOPKINS 7 Jan 1974 [12 Jan 1973] 1671/73 Heading B1R A humidifier comprises a water container 1 with a transparent plastics tube 2 with a removable closure 5, two rectangular tanks 3 and small bore tubes 3 connecting 2 to the tanks, wherein the larger vertical walls of each tank 3 are formed of rigid porous membranes 3 which are contacted in parts by sheets of absorbent paper or asbestos 8 in zig-zag shape and contained in trunking 9, and an electric fan 11 being provided to force air to be humidified through channels 10 formed by 8. The porous membrane 7 may be high density polythene or ceramic treated with silicone hydrophobic agent with the pores partially filled with calcium sulphate. A light 16 (Fig. 2) may also be provided. The humidifier may also be used to add perfume or germicide to air. A heater element 13 prewarms the air before humidification. For Figures see next column
Patent GB-146921-A (GB)
Title: Improvements in or relating to magnetos
IPC: H02K21/38
Filed: 1920-01-19
Abstract: 146,921. Tournayre, J. H. June 28, 1919, [Convention date]. Inductor - alternators. - A multi-polar magneto comprises a rotating inductor, a stationary multi-polar field-magnet, and stationary armature windings arranged at right-angles to the neutral planes of the field-magnet. In the construction shown in Fig. 1, four pole-pieces are attached to permanent magnets in the form of arcs with similar poles N, S adjacent. The pole-pieces are formed with recesses in which are placed the ends of the armature coils f<1> - - f<4>. A permanently magnetized ring having consequent poles may be substituted for the arc-shaped magnets. The rotor is formed with four prongs. The frequency of the current induced in the winding will be equal to the product of the number of pole-pieces and the number of revolutions per second of the rotor.
Patent GB-1365982-A (GB)
Title: Apparatus for assembling a component and a workpiece
IPC: H01R43/20
Filed: 1971-12-20
Abstract: 1365982 Assembling components to workpieces, assembling force fits; shearing AMP Inc 20 Dec 1971 [14 Jan 1971] 1795/71 Headings B3A B3U and B3W Apparatus for assembling a leading component 6 of a strip 5 of components and a workpiece, e.g. a coil bobbin 7, and then severing the assembled component from the strip, comprises a holder 3 for the workpiece, a feed device which feeds the strip along a rectilinear path which is reciprocable along the path the feed device and includes two feed members or blocks 1, 2, severing means in the feed path between the member 2 and the holder 3 for severing the leading component from the strip after it has been advanced to the limit of its movement and means to limit movement of the strip away from the holder. The bobbin is formed with an end flange 32, which rests on a ledge 31 of the holder 3, and six component strips 5 are located in feed channels 8 of the feed blocks 1, 2. At the beginning of a work cycle the feed blocks with their drive blocks 25, 26 are at their upper limit of travel. They are moved downwardly by a piston rod 27 and spring 29 and the strips 5 are driven downwardly by frames 24, which engage lugs 34 on the terminals 6. The movement of the block 25 is arrested by a stop (not shown) and continued movement of the block 26 drives the leading terminals 6 into holes 33 until the lugs 34 abut the bobbin flange. Cylinders 21 are actuated to slide shear blocks 4 laterally of the feed block 2 to shear the leading terminals from the strips 5, the shear blocks 4 being returned by a leaf spring 22. The movement of the feed blocks 12 draws the strips 5 from reels (not shown) and as the strips pass through the channels 8 in the block 1, the undersurfaces of the lugs 34 cam frame arms 11 outwardly to allow the lugs to pass the arms. The piston rod 27 is then raised thereby retracting the feed block 2 and the lugs 34 of the now leading terminals cam the frames 24 outwardly, while upward movement of the strip is prevented by engagement of the lugs with the lower sides of the arms 11.
Patent GB-555324-A (GB)
Title: Self-cleaning pressure strainer for water
IPC: B01D35/30
Filed: 1942-02-11
Abstract: 555,324. Filters. GLENFIELD & KENNEDY, Ltd., and BOUCHER, P. L. Feb. 11, 1942, No. 1799. [Class 46] [Also in Group XXIX] A self-cleaning pressure strainer for water comprises a parallel set of standard pipes or cells a accommodating cloth-covered straining baskets b and poweroperated inlet valves c<SP>1</SP>, c<SP>2</SP>, c<SP>3</SP> and wash valves c<SP>4</SP>, c<SP>5</SP>, c<SP>6</SP> controlled by means operated in sequence by a cam shaft, or shafts e, e<SP>1</SP>, driven by a motor m, which is started and stopped by a differential pressure unit f connected by pipes g, h across the strainer, so that each cell in turn is isolated from the unstrained water and backwashed with part of the strained water from the other cells. The baskets b may be parallelsided and the pipes a tapered. As shown, hydraulically-operated sluice valves c<SP>1</SP> ... c<SP>6</SP> are controlled by pilot valves d<SP>1</SP> ... d<SP>6</SP> operated by the cam-shaft e for opening, and the cam-shaft e<SP>1</SP> for closing, the valves. The shafts e, e<SP>1</SP> are connected through reduction gearing n with a motor in controlled by a switch p operated by the diaphragm q of the unit f. The diaphragm load is balanced as by an adjustable spring r. A switch t in parallel with the switch p may be fitted to one of the cam-shafts so that both switches must be open before the motor stops. Sluice valves k<SP>1</SP>, k<SP>2</SP>, k<SP>3</SP> may be provided at the outlets for cutting out any cell for dismantling and a by-pass valve l may be provided. Alternatively, the cams may operate switches for starting, stopping and reversing valve-operating motors.
Patent GB-630620-A (GB)
Title: Improvements in or relating to building and roof constructions
IPC: E04B1/32
Filed: 1947-01-20
Abstract: 630,620. Collapsable huts, theatres, warehouses, &c. LONGLEY, H. J. Jan. 20, 1947, No. 1831. Convention date, Jan. 26, 1946. [Class 20(i)]  A roof or building construction such as a shed, storehouse, mess, barracks or cinema comprises a number of spaced arched ribs 1 formed out of mesh-work, metal latticing, " Weld-mesh " (Registered Trade Mark) &c. bent to the desired curvature to form a supporting surface for covering material and one or more inwardly projecting stiffening webs 1A to each arched rib, such webs being of hollow section e.g. channel-section, V-shape, U-shape, with its two outer edges secured to the arched ribs by welding, or, if the webs are made of mesh-work, by hooking over the ends of the rods or wires forming the webs, such hooks being preferably closed down to grip securely. As shown, the stiffening webs 1A, Fig. 7, are of V-section and are formed of metal mesh-work which is hooked by means of hooks 3, 4 to longitudinal rods or wires 10 in the arched members 1. The spaces between adjacent arched ribs 1 are filled by strips 14 of mesh-work having cross rods 14b which are hooked to cross rods 9 in the arched ribs 1. The ribs 1 and webs 1A are formed in situ of short lengths of mesh-work which are joined, as at 2A, by hooking or welding or both. The longitudinal members 10 of the arched ribs are passed at their ends through concrete or wooden footings 6 whilst the ends of the innermost members 13 of the reinforcing webs 1A rest on wedges 7, 7. The vault and the ends of the structure are covered with flexible water proof fabric. The ends are strengthened by a number of vertical; horizontal or radial members. The arched members are built up in situ lying on their edges with the webs 1A lying in horizontal planes (Fig. 12) and the footings 6, which are added at this stage, in a vertical position. The strengthening upright 12A (of mesh-work) may then be erected and used with lifting line 20a as a derrick for lifting the arched members into position.
Patent GB-469041-A (GB)
Title: Improvements relating to carriers for supporting wash-tubs, clothes-baskets and the like
IPC: D06F1/00
Filed: 1936-01-21
Abstract: 469,041. Washing machines. WHITTAKER BROS. (ACCRINGTON), Ltd., and DUCKWORTH, J. A. Jan. 21, 1936, No. 1881. [Class 138 (ii)] A shelf C for supporting a wash-tub, clothesbasket, &c. is provided towards its rear with projecting pins D which are received in slots E in brackets F secured to the stand B carrying a washing-machine A. By pushing the shelf back until the pins are at the rear of the slots, the portions G of the side members of the shelf behind the pins engage under portions of the brackets and hold the shelf in the horizontal operative position. The shelf is swung to the inoperative horizontal position underneath the machine by drawing it forward swinging it through 180‹ and pushing it so that the pins again lie at the rear of the slots.
Patent GB-1366658-A (GB)
Title: Thermal prime mover
IPC: F01K3/10
Filed: 1971-06-14
Abstract: 1366658 Rotary tubular heat exchangers N LAING 14 June 1971 [15 June 1970 (2)] 01892/74 Divided out of 1366652 Heading F4S [Also in Division F1] A thermal power unit of the closed cycle type comprises a rotary evaporation heat exchanger 1 and associated heat source 911 an expansion engine 2 and a rotary air cooled condenser heat exchanger 3, means (not shown) being provided for mixing water in finely atomized form with the condenser cooling air for short term additional cooling of the condenser. The power unit is similar to that described in the parent Specification 1,366,652 referred to. Specifications 1,366,653, 1,366,654, 1,366,655, 1,366,656 and 1,366,657 are also referred to.
Patent GB-868283-A (GB)
Title: Hair preparations
IPC: A61K8/67
Filed: 1958-01-20
Abstract: 868,283. Hair preparations. SCHERING A.G. Jan. 20, 1958 [Jan. 29, 1957], No. 1910/58. Class 81 (1). A hair preparation comprises, together with a solvent or diluent and one or more customary ingredients of hair preparations, a compound of general formula where X represents a hydrogen atom or an aliphatic acyl group, Y represents a hydrogen atom or a fluorine atom, and A and B represent hydrogen atoms or in conjunction form a further bond between the two carbon atoms at positions 1 and 2. The preparation may also contain pantothenic acid or a compound thereof and/or inositol and/or 2: 2<SP>1</SP> - dihydroxy - 3:5:6: 3<SP>1</SP>: 5<SP>1</SP>: 6<SP>1</SP> - hexachlorodiphenylamine. Other components specified are ethyl alcohol, polyvitamin concentrates, isolinoleic acid ethyl ester, glycerol monostearate, adeps lanae, cholesterol, lecithin, and silicone oils. Examples of the active ingredient are hydrocortisone, fluorohydrocortisone-acetate, and prednisolone.
Patent GB-121541-A (GB)
Title: Improvements relating to the Breaking and Scutching of Flax and like Fibres.
Inventor: MCEWEN WILLIAM
IPC: D01B1/30
Filed: 1918-02-02
Abstract: 121,541. McEwen, W. Feb. 2, 1918. Grip-chain a n d l i k e arrangements for feeding, holding, and conveying fibrous materials. - The bundles a of flax in a breaking and scutching machine are held by three or more belts b<1>, b<2> b<3> one end overhanging the channel c and the other end a<1> being folded round the edge of one or more of the belts. The bundle is first placed between the belts b<1>, b<2>, and the end a<1> is then folded over the belt b<1> by a transversely moving belt b<4>. The belts may be turned on edge when passing along the channel c.
Patent GB-103853-A (GB)
Title: Improvements in and relating to Gas Heated Cooking Stoves.
Inventor: BECKET WILLIAM HALSEY
IPC: F24C15/32
Filed: 1916-02-10
Abstract: 103,853. Becket, W. H. Feb. 10, 1916. Gas cooking-stoves. -A gas cooking-oven is heated either solely internally or solely externally, being fitted with means whereby the combustion products are diverted alternatively through tho oven or through side flues. Fig. 2 shows part of an oven with side flues e, at the lower ends of which are valves h movable on axes h<1> so that they may open the flues e and close the inlets to the oven, or alternatively to close the flues e and open the inlets to the oven. The outlet i from the oven is opened and closed by a sliding valve r at the upper end of a vertical bar l, which moves on a guide-pin m and is operated by a lever attached to the lower end l<3>; toggle-bars o simultaneously move the valves k. Plates q in the oven bottom b<5> afford access to the burner d. According to the Provisional Specification, flap, lift, or slide valves operated by bellcrank levers or rack-and-pinion gearing may be used.
Patent GB-988538-A (GB)
Title: Improvements in photographic cameras
IPC: G03B27/66
Filed: 1962-01-19
Abstract: 988,538. Photomechanical printing. INSTANT PHOTOSCREEN Inc. Jan. 19,1962 [Jan. 19,1961;0ct. 18,1961],No. 2049/62. Heading G2M. A photographic camera is provided with a half-tone screen removably secured to the camera directly in front of and covering the photosensitive surface, the screen having a flexible transparent base sufficiently rigid to maintain itself flat. As shown, applied to a camera for the production of a positive print by the silver salt diffusion process, the camera has a screen 30 secured in place by an adhesive strip 32 on one side, and, panachromatic film is used the screen may be dyed with a chrome-yellow dye. The opaque lines on the screen, which may be produced photographically, may be protected against abrasion by a thin transparent layer of polyethylene terephthate. It is stated that the positive print may be mounted directly in an "artists mechanical" for the production of a lithographic plate.
Patent GB-1453882-A (GB)
Title: Process for the manufacture of glycidyl ethers of monohydric  or polyhydric phenols having improved properties
IPC: C07D303/22
Filed: 1974-01-17
Abstract: 1453882 Polyglycidyl ethers HOECHST AG 17 Jan 1974 [29 Jan 1973 9 Oct 1973] 02142/74 Heading C3B Glycidyl ethers of polyhydric phenols are made by heating the phenols with excess epichlorohydrin, in the presence of a catalyst specific to such a reaction, 0À2-8% wt. water, based on the reaction medium, 0-9-1.15 equivalents solid alkali metal hydroxide MOH per phenolic OH, and 0À001-5% wt. based on phenol, of an Sn(II) compound, the process being performed in steps, similar to those of Specifications 1,329,178 and 1,277,688, in which (1) 10-90% wt. of the MOH is added, (2) the remainder of the MOH is added, and (3) the excess epichlorohydrin is distilled off, and, if saponifiable Cl remains, the glycidyl ether is dissolved in an inert solvent and dehydrochlorinated with excess alkali hydroxide solution. The water-free phase containing epichlorohydrin distilled off in stage (2) may, but need not, be returned to the reaction mixture. Sn(II) compounds are preferably stannites or compounds that can form stannites with alkalis, e.g. simple or complex Sn(II) salts, of inorganic or organic acids, many being listed; in the Examples, Sn(II) chloride or nitrate are used. The catalyst may be choline, a choline salt, or other quaternary ammonium salt; in the examples, choline chloride is used. Other optional process details are similar to those of the above Specifications. In the examples, the phenols are bisphenol A, alone or mixed with phenol novolac. The product has a low content of saponifiable chlorine, and has low intrinsic colour. Specification 1,453,881 is referred to. Use.-In compression-moulding compositions; in potting compositions; in paints and coatings.
Patent GB-842192-A (GB)
Title: Exhaust muffling means
IPC: B23B45/04
Filed: 1958-01-22
Abstract: 842,192. Portable drilling-machines. ARO EQUIPMENT CORPORATION. Jan. 22, 1958 [Nov. 18, 1957], No. 2153/58. Class 83 (3). [Also in Group XXVII] Exhaust from a pneumatic hand-drill passes from a silencing-chamber 50, 52, Fig. 1, in the drill-handle to a hose 58 surrounding the drill supply-hose 18, and which discharges at a remote point, e.g. to the outside of a building wall 62, Fig. 2, and/or into a silencing-box 78, Fig. 5, which may be common to several tools and has a discharge opening 80 of cross-sectional area at least that of the entry-fitting 60b. The supply-hose 18 delivers to the drill motor via a trigger-controlled valve 22 and a duct 40, which feeds two motor entries 44 and lies between two motor exhaust ducts 48 leading from an exhaust annulus 46 to the chamber 50, 52. In a modification, the drill has a handle in line with its chuck.
Patent GB-538572-A (GB)
Title: Improvements in or relating to liquid spray nozzles
IPC: B05B1/26
Filed: 1940-02-05
Abstract: 538,572. Spray producers. ELLIS, T. Feb. 5, 1940, No. 2183. [Class 69 (iii)] A nozzle more particularly for forming a sheet of liquid for protecting a surface from gas &c. comprises an adjustable mushroom shaped head 10 and a shank 11 having a tapering bore 13 leading to four radially directed countersunk outlets 14. The shank is also provided with a number of slots 17 formed radially therein. The shank 11 is secured in a body 19. Liquid from the slots 17 impinges against the inner wall 20 of the body 19 and is projected upwards to impinge against jets of liquid emerging from the outlets 14 to form a continous film or sheet, the character of which may be varied by screwing the shank 1 a greater or less degree in the body 19.