baber/WOPTO huggingface dataset:
Patent GB-737755-A (GB)
Title: Improvements in or relating to screening or sifting apparatus
IPC: B07B1/18
Filed: 1953-06-16
Abstract: 737,755. Sifting-apparatus. HECKETT ENGINEERING, Inc. June 16, 1953 [June 25, 1952], No. 16504/53. Class 117. A rotating screen is of non- circular cross-section and disposed within coaxial rings, being reinforced by longitudinal beams secured to its outer surface and extending between the internal peripheries of the rings. In the embodiment described, the screen is formed of flat plates and is of rectangular section further reinforcement being provided by transverse webs disposed within said rings. The screen 17 is inclined to the horizontal, its upper end being fed from a hopper 29, and is formed of steel plates 18 having apertures 19 and supported by longitudinal beams 20 welded &c. thereto. Rings 21, 22, supported on rollers 16, surround the screen to which they are secured by webs. The screen is rotated by a ring gear 24, driven by a motor 27 through a gear-box 26 and pinion 25. Material passing through the screen is deflected by inclined plates 31, 32 on to a conveyer belt 33, leading to a collecting pit 34. Inclined bars or baffles may be secured to the inner screen surfaces to augment or oppose the normal gravity feed.
Patent GB-457498-A (GB)
Title: An improved apparatus for the wet concentration of coal by the float and sink process, using a heavy separating liquid
IPC: B03B5/36
Filed: 1935-06-07
Abstract: 457,498. Washing granular materials. GEWERKSCHAFT SOPHIA-JACOBA, Huckelhoven, Erkelenz, Germany. June 7, 1935, No. 16583. Convention date, June 7, 1934. [Class 82 (ii)] The constituent parts of heterogeneous mixtures, e.g. coal, are separated by float and sink treatment in an apparatus comprising a concentrating vessel containing a heavy liquid which is in communication with the casing of elevator mechanism which carries away the constituent sinking in the heavy liquid. The liquid level in the concentrating vessel and the elevator casing is the same and liquid overflowing from the vessel and the casing is returned to the concentrating vessel by means of one or more pipes extending across the vessel, each pipe having a discharge opening or openings adapted to distribute the liquid substantially uniformly over the width of the vessel. Each pipe may have a single longitudinal slot or a plurality of uniformly distributed slots, the slot or slots being preferably disposed so as to discharge the liquid in a direction opposite to the direction of inflow of the material to be separated. By the provision of adjustable weirs on the vessel and the casing the returned liquid may be caused to flow upwardly or downwardly as desired. The material is fed from a screen 2 into heavy liquid in the vessel 1, the light constituents being withdrawn by a rake 3 and the heavy constituents by an elevator working in the casing 5. The vessel 1 and the casing 5 are provided with overflows 16, 17, Fig. 2, preferably arranged adjacent as shown, each overflow being controlled by a slide 18. The overflowing liquid is returned by a pump to pipes 6 with longitudinal slots 7 extending substantially across the vessel 1. The pipes are rotatably mounted and are horizontally adjustable in openings 10 in the walls of the vessel 1, the openings being closed by cover plates. The supply to the pipes is preferably uniformly distributed by the provision of a plurality of supply pipes 14, 15 as shown in Fig. 5. To prevent clogging of the slots 7 rods with cleaning lugs or pins are provided in the pipes, the rods being reciprocated mechanically or by hand.
Patent GB-1087144-A (GB)
Title: Binder compositions, foundry cores and molds and process of making same
IPC: B22C1/26
Filed: 1965-04-20
Abstract: A binder composition according to Specification 1,038,077 comprising (a) 35-75 p.b.w. of urea-formaldehyde mixture and/or condensate, in which the ratio of urea to formaldehyde is 1:2.8-5.0, (b) 5-50 p.b.w. of a reducing sugar or a sugar hydrolysing to give a reducing sugar, and (c) 5-50 p.b.w. of furfuryl alcohol, is improved by reacting (a) partly or wholly with (b) and/or (c).  The binder is used in aqueous solution in the preparation of foundry sand cores, in conjunction with a "catalytic component" which is an aqueous solution of an acid catalyst and urea, the ratio of urea to formaldehyde in the final product being 1:1.8-3.0.  In examples, the binder is prepared from furfuryl alcohol, a urea-formaldehyde resin (85% solids, aqueous), urea and hydrol, the catalytic component being urea and NH4Cl in water.  Sand is mixed first with the catalytic component then with the binder in aqueous solution to give sand cores.
Patent GB-626703-A (GB)
Title: Improvements relating to perambulator, bed and like coverings
IPC: A47G9/02
Filed: 1946-05-31
Abstract: 626,703. Bed and perambulator coverings. GUEST, A. W. May 31, 1946, No. 16605. [Class 142 (iv)] A perambulator, bed or like covering comprises a fabric sheet 5 to which a number of fabric strips 11 are secured by lines of stitching 13, 13a, so as to form pockets 10 for warmth-retaining pads 15, flaps 14 forming releasable closures for the pockets. The flaps 14 may comprise either lateral extensions of the strips 11 or separate strips secured to the sheet 5. Plain marginal extensions 17 are provided at the sides of the covering. The pockets may be arranged in any desired pattern. In a modification, Fig. 4 (not shown), the pockets are in the form of tunnels. In a further modification, Fig. 5 (not shown), the closure flaps are fastened to the pockets by means of buttons and buttonholes.
Patent GB-159793-A (GB)
Title: A method of heat treating steel articles
Filed: 1920-06-19
Abstract: 159,793. Thorne, J. L. June 19, 1920. Modifying physical characters of metals.-Steel articles, particularly cast-steel, are heat-treated by heating to a hardening-temperature of about 2050 to 2350‹ F. and then immersed in a molten alkaline bath such as molten caustic soda at 1100 to 1250‹ F. until they acquire the temperature of the bath. They are then withdrawn and aircooled to 600‹ F., whereupon they are immersed in a drawing-bath preferably of the same composition and same temperature as or slightly higher than the first bath. After they have attained the temperature of the drawing-bath, the articles are removed to acquire the room temperature. The Specification states that when treated by this method, the scale formed on the steel is readily removed by washing in water, and when dried a black rust-proof finish is given by applying oil to the surface of the article.
Patent GB-1145824-A (GB)
Title: Process for the production of zinc hydrosulphite
Inventor: SMITH JAMES WILMER
IPC: C01B17/66
Filed: 1965-04-21
Abstract: 1,145,824. Zinc hydrosulphite. ELECTRIC REDUCTION CO. OF CANADA Ltd. 21 July, 1966 [21 April, 1965], No. 16702/65. Heading C1A. A process involving a reaction in a liquid with the formation of an inert, insoluble material comprises effecting the reaction in a bed of abrasive solid particles, these particles being inert or reactive in the chemical reaction, the liquid being passed upwardly through the bed to effect fluidization thereof. For the preparation of zinc hydrosulphite, aqueous sulphurous acid is reacted with a fluidized bed of zinc particles to form zinc hydrosulphite. A suitable apparatus is shown in the Figure wherein aqueous sulphurous acid enters the reactor 3 via the line 11 and reacts. with the bed of zinc particles 2. The hydrosulphite thus formed is removed through the pipe 6 after having any unreacted zinc removed in the disengaging zone 5. Fresh particulate zinc is added at 7 to maintain the height of the bed at a constant level. The sulphurous acid is preferably water saturated with sulphur dioxide and the size of the zinc particles is preferably 0À1 to 5 mm. diameter.
Patent GB-795879-A (GB)
Title: Process for the preparation of cyanuric acid from urea
Filed: 1955-06-10
Abstract: Cyanuric acid is prepared by heating urea in the presence of sulphuric acid.  100 mols. urea are mixed with 1-15 mols. sulphuric acid and the mixture heated at 120-140 DEG  C. under normal pressure while stirring.  The resulting semi-solid mass is heated at 180-200 DEG  C. and extracted with boiling water to remove ammo nium sulphate and leave a residue of cyanuric acid. Specifications 416,599, 443,119 and 570,715 are referred to.
Patent GB-827915-A (GB)
Title: Rotary card file
IPC: B42F17/28
Filed: 1958-05-23
Abstract: 827,915. Filing papers. NEUSTADTER, A. May 23, 1958 [March 25, 1958], No. 16717/58. Class 146(1) A rotary card file comprises a stationary support 14 and a card carrying rotor 20 mounted for free rotation in either direction about a horizontal axis in the support and is characterized by one or more detents for example, balls 36 carried by the support or rotor and a circular series of recesses 34 concentric with the axis in the rotor or support to restrain the support and rotor against substantial relative rotation in either direction. The recesses and detent or detents are so arranged that when a detent engages a recess 34, one of a plurality of cards 26 is maintained in an inclined position for reading or making an entry on that card. The detents 36 may be mounted in a handwheel 22 secured to a journal 18 projecting from the rotor.
Patent GB-273316-A (GB)
Title: Improvements in or relating to emergency governors for elastic fluid turbines and the like
IPC: F01D21/20
Filed: 1927-06-23
Abstract: 273,316. British Thomson-Houston Co., Ltd., (Assignees of Dickinson, E. D.). June 28, 1926, [Convention date]. Stop-gear.-An emergency centrifugal governor or stop-gear of the spring plunger type may be tested without overspeeding the turbine or without disturbing the adjustment of the spring by adding liquid to the plunger head from an annular chamber in the shaft.. To test, the valve 39 is opened permitting liquid (oil) to flow through pipe 36 to the annular trough formed by the sleeve 35, and thence through passages 34 and 31 to the interior of sleeve 17, part of such liquid finding its way through the annular opening 29 to the chamber above formed by the liner 20, plate 25 and flange 27 formed near the plunger head, thus weighting the plunger and causing the governor to trip the throttle valve. After tripping the valve 39 is closed and the liquid in the plunger head leaks through the opening 23 in the flanges 27 whereupon the spring retracts the plunger and the throttle valve may then be reset.
Patent GB-530828-A (GB)
Title: Improvements in and relating to electric discharge lamps
IPC: H05B41/12
Filed: 1939-06-07
Abstract: 530,828. Discharge lamps. BRITISH THOMSONHOUSTON CO., Ltd., and SCOTT, W. J. June 7, 1939, Nos. 16751 and 16753. [Class 39 (i)] [Also in Group XXXV] The starting of a lamp on an a.c. or d.c. supply is ensured by a thermal switch and an auxiliary glow discharge device which allow the cathode or cathodes to heat up, the thermal switch then opening, an inductive kick across the discharge path being obtained from the ballast. In one form the bimetallic switch 4, Fig. 3, has its heater resistance 3 in series with the glow discharge device 5 and the main electrodes 2 ; the switch contacts close, and then open on subsequent cooling of the resistance 3. An inductance 8 may be placed in series with the device 5 and be additional to the usual inductive ballast 6. In a modification the switch and glow device are combined, the electrodes of the device 3, Fig. 2, forming a bimetal switch. The inductive resistance is in two parts 4 ; the cathodes 2 are connected across resistances 7. Reference has been directed by the Comptroller to Specification 521,618.
Patent GB-948450-A (GB)
Title: Improvements in or relating to methods of assembling component parts of semiconductor devices
IPC: H01L21/00
Filed: 1960-05-12
Abstract: <PICT:0948450/C1/1> <PICT:0948450/C1/2> <PICT:0948450/C1/3> In a method, Fig. 1, of assembling parts of semi-conductor devices, a glass tube 1 is centred (a) round a metal pin 5, into a recess 7 of which a disc 6 on the end of a wire 2 is placed and centred (b); tube, pin and wire are rotated and heat is supplied (c) to the glass, to seal the tube to the wire, and to the pin to prevent cooling; the pin is lowered and a gas is supplied (e) through a bore 9 in the pin, to reduce any oxide formed on the wire in the tube.  The pin may be lowered in two stages (d) and (e), the wire following the pin in the first stage whilst the seal 10 is plastic and separating from it in the second stage when the seal hardens.  A device, Figs. 2 and 3, for carrying out this method comprises a plurality of rotary heads 36 arranged in a circle on a rotary table.  Each head comprises a rotary part 11 supported by balls 14 in a stationary part 12.  A device 43 continuously supplies wires from holders 39 on a guide track 38 and a device 45 supplies glass tubes to the heads, which are moved step-by-step as the assembly proceeds; and the finished parts are replaced on the guide track by a lever 44. An electromagnetic safety device 42 prevents supply of a new tube or wire if any parts have remained in the head.  Tongs 4, 16 support and centre the glass tube on a surface 15 and the wire is centred and held in position on the pin 5 by an arm 29. The wire and the tube are rotated together as they pass a series of burners mounted on a segment 52.  Raising of a conical sleeve 19 by means of a cam 21 causes a lever 22 to be displaced, thereby turning shafts 17 and 18 to separate the tongs to allow admittance and removal of the glass tube. Means is provided to raise and lower pin 5 in stages.
Patent GB-379018-A (GB)
Title: Process of preparing lye with enhanced wetting and impregnating power
IPC: D06M13/335
Filed: 1931-06-09
Abstract: The wetting and impregnating power of alkali lye, particularly for mercerizing yarns and fabrics, is increased by the addition of small quantities of one or more lower phenols soluble in the lye, together with one or more higher phenols containing at least three carbon atoms in an aliphatic side chain.  Small quantities of hydrogenated aromatic substances, aliphatic or aromatic alcohols, or mixtures of the same may also be added.  The following mixtures are specified: cresol and carvacrol; xylenol and thymol or carvacrol; cresol, xylenol and carvacrol; cresol, carvacrol, methyl cyclohexanol and butyl alcohol.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of mixtures of phenols with phenol homologues or derivatives in general, including amino, sulpho, chloro and oxymethyl derivatives and sulphonic esters of phenols, and mixtures of phenols with aromatic sulphonic acids.  The following mixtures are specified, in addition to those mentioned above: cresol and xylenol; cresol or xylenol and isopropylnaphthalene sulphonic acid; xylenol and p-cumene sulphonic acid; and cresol, carvacrol, methylhexanol, butyl alcohol, and p-cumene sulphonic acid.  Naphthols and alkylated naphthols are also mentioned as suitable phenols.  This subject-matter does not appear in the Specification as accepted.
Patent GB-707084-A (GB)
Title: Improvements relating to the construction of water-tight shaft structures
Inventor: DEILMANN CARL
IPC: E21D5/04
Filed: 1951-07-17
Abstract: 707,084. Waterproofing shaft structures. BERGBAU GES., C. D. July 17, 1951, No. 16927/51. Class 20 (2). [Also in Group XXI] In order to provide a watertight shaft structure a homogeneous layer 3 of bituminous compound of high viscosity is applied to either a layer 2 of fabric, secured to the shaft face 1 or to the inner face of an outer annular cylinder of brick or concrete; the shaft tube 4 or inner annular cylinder is then built up and keyed to the packing compound. When the bore hole is in frozen ground the surface to which the packing is to be applied is de-iced and dried.
Patent GB-949065-A (GB)
Title: Improvements in or relating to thermostatically controlled valves
Inventor: LIPSCOMBE JOHN ALFRED
IPC: G05D23/13
Filed: 1961-05-10
Abstract: 949,065. Valves. WALTON ENGINEERING CO. Ltd. April 27, 1962 [May 10, 1961], No. 16975/61. Heading F2V. In a rotary valve in which two ports 2, 3 are controlled by a rotor 11 having a pair of diametrically opposite shutters 9, 10, the rotor is divided into two or more separate sections arranged end-to-end, each being independently mcved on the common stationary spindle 6 by a separate wax-filled thermal element 17. The element 17 is carried on spindle 6 by a bracket 14, the plunger acting against spring 18 to move the short arm of lever 21 pivoted on link 23 whereby the long arm rotates a section of the shutter through over-ride spring 28. The temperature is set by turning spindle 6, and the rotor turns between stops 26, 27 to control flow between the inlet 1 and outlet 2 of a cooler and a by-pass outlet 3 to an engine water jacket. Specification 949,064 is referred to.
Patent GB-638430-A (GB)
Title: Improvements in or relating to loaders for air filters
IPC: B01D46/52
Filed: 1947-06-27
Abstract: 638,430. Air filters. AMERICAN AIR FILTER CO., Inc. June 27, 1947, No. 17008. Convention date, Jan. 31, 1940. [Class 8(ii)] In an air filter loader comprising a frame having a loading area through which a corrugated filter medium support F passes with its crests and valleys extending sequentially in the line of motion and wherein elements 10 on a conveyer 12 move downwardly into and upwardly out of a valley in said loading area for pressing an interposed filter medium into conformation with said valley, the elements 10 are blade-like and pivotally depend at 11 from the conveyer 12 in free swinging relation thereto, and a guide 17 restricts the swing- ing movement as the element 10 moves downwardly into a valley. As shown the frame comprises spaced opposite side plates 2 carrying tracks 4 for the filter medium support F. A roll of glass fibre filtering medium of width equal to the spacing of the plates 2 is conformed to the corrugations by two of the pivoted blades 10 of the same width as the roll. The support crests are clamped during filter loading of the succeeding valley by engagement of resilient spaced rollers 16, and as the pivoted edge of the appropriate blade 10 approaches the completion of its filter pressing duty it pushes against the crest to move it out of engagement with the rollers 16 and to bring the succeeding crest into the loading area. Specification 499,914 is referred to.
Patent GB-1186892-A (GB)
Title: Improvements in and relating to Methods of Providing Polycrystalline Layers
IPC: C23C16/02
Filed: 1967-04-13
Abstract: 1,186,892. Coating with metals &c. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 13, 1967 [April 16, 1966], No.17018/67. Heading C7F. [Also in Division C 1 ] A polycrystalline layer of an element is formed on a heated substrate by chemical reaction from a gas mixture comprising a compound of the element, even deposition of the element being secured by first depositing spaced nuclei of the element, or another element, or a compound of the element, on the substrate. Preferably the nuclei are deposited by thermal dissociation of the vapour of a compound, such as butane, other hydrocarbons, silane and alkyl silanes. Alternatively nucleating material may be deposited from its vapour. Ge, B, Si, W and Ta may be deposited on oxidic substrates such as steatite, Al oxide, Zr oxide, glass, quartz glass and Si nitride by reduction of halides with hydrogen after nucleation by thermal dissociation of a hydrogen compound. For example nucleation with C may be followed by deposition of Si, without intermediate cooling and with a change of feed gas. Si and Si carbide may be used to nucleate Si and B. Further nucleating material may be added during growth of the polycrystalline layer. Semi-conductor circuit elements can be made in a polycrystalline Si layer so deposited by local diffusion of doping substances.
Patent GB-1447318-A (GB)
Title: Carburetters provided with an accelerating pump
IPC: F02M7/087
Filed: 1974-04-18
Abstract: 1447318 Spray carburetters SOC INDUSTRIELLE DE BREVETS ET D'ETUDES 18 April 1974 [8 June 1973] 17024/74 Heading F1B Above a predetermined temperature the free end 23b of a bi-metallic coil 23 in the accelerator pump chamber 9 is in the path of the pin 16a projecting from the pump diaphragm 15 and the maximum pump stroke is reduced.
Patent GB-1326687-A (GB)
Title: Non-corrosive flux
IPC: B23K35/34
Filed: 1971-05-25
Abstract: 1326687 Soldering flux ALLEGHENY LUDLUM INDUSTRIES INC 25 May 1971 [1 June 1970] 17041/71 Heading C7M A non corrosive soldering flux comprises an aqueous solution containing at least 1 per cent weight Cu(No 3 ) 2  and at least 10 per cent weight H 3  PO 4 . A thickening agent such as lead acetate, petroleum jelly or palm oil and a wetting agent may also be added. Alternatively the proportions of Cu(No 3 ) 2  and H 3  PO 4  fall within the area "A" of the accompanying graph. The preferred flux consists of 22 per cent weight H 3  PO 4 , 4 per cent weight Cu(No 3 ) 2  balance water and may be used for soldering stainless steel.
Patent GB-843884-A (GB)
Title: Improvements in or relating to the thermal treatment of hydrocarbons
IPC: C07C4/04
Filed: 1958-05-28
Abstract: <PICT:0843884/IV(b)/1> A process for pyrolysing hydrocarbons to form less saturated hydrocarbons such as acetylene and ethylene comprises preheating fuel and comburent gases and separately introducing them into the combustion chamber of a pyrolysis furnace in opposing directions forming an angle of at least 90 degrees to one another, at a flow rate of 100 to 200 m. per second, and with substantially equal momenta, the gases being introduced through holes of small diameter arranged in concentric circles with respect to the longitudinal axis of the furnace each hole for introducing fuel gas corresponding to a hole for introducing comburent gas, and the axis of two corresponding holes being inclined to one another at an angle of at least 90 degrees whereby the fuel and comburent are introduced in said opposing directions and form a ring of flame which extends parallel to the longitudinal axis of the combustion chamber and wherein the hydrocarbon to be pyrolysed is injected into the hot combustion gases formed by the flames and then quenching the flames with water.  In a typical example a coke oven gas preheated to 450 DEG C. and comprising 58,9% hydrogen and 25,4% of methane is fed through a pile 6 and a duct 8 and is introduced into the combustion chamber 2 through the holes 121.  Oxygen also preheated to 450 DEG C. enters the combustion chamber through a pipe 5 a duct 7 and holes 12.  The gaseous reagents impinge upon each other at an angle of 90 degrees and are ignited to form a ring of flame.  Steam at a temperature of 700 DEG C. comes from the space 19 and is injected through a slit 20. After quenching by transversely injecting water through the central sprayer 10 the pyrolysis gases contain 9,8% of acetylene and 11,2% of ethylene.
Patent GB-1370694-A (GB)
Title: Circuits for energising liquid crystal devices
IPC: G09G3/18
Filed: 1971-09-06
Abstract: 1370694 Transistor switching and gating circuits; modulating light RCA CORPORATION 6 Sept 1971 17080/74 Divided out of 1370692 Headings H3T and H4S A liquid crystal device 104 is connected between two switching paths receiving respectively an "on" energization alternating voltage and a relatively high frequency "off" alternating voltage. As shown the switching paths include triacs. Switching on triacs 100 causes the low frequency to be shorted to earth and the high frequency to be applied to the crystal. Reversing the conducting conditions applies the low frequency to the crystal and short circuits the high frequency. A transistor circuit (Fig. 2) may replace each triac.