baber/WOPTO huggingface dataset:
Patent GB-477977-A (GB)
Abstract: 477,977. Closed solid - fuel stoves. MARICHAL & CO., A. April 6, 1936, No. 10159. Void. Convention date, April 6, 1935. [Class 126] In a stove for cooking or heating, or a boiler for central heating, solid fuel passes from a reservoir 4 through a hopper 5 and tube 2 on to a grate 3 of greater diameter than the tube 2. The combustion gases pass through tubes 8 arranged around the central tube 2, the tubes 8 being in contact with atmospheric air over the whole of their periphery so as to be cooled. The tubes 8 are mounted between perforated plates 9, 10 which are ribbed at 9d, 10d to locate the tubes. These plates are interrupted and joined by vertical walls 12, which are integral with the tube 2. The portion 2a of the tube 2 between the plates 12 is removable, and may rest on lugs 13 integral with the plates 12. A door 11 is provided. A perforated ring 14 resting on the plate 10 can be displaced by a handle 15 to act as a hit-and-miss damper. When the tubes 8 are closed by this damper, the draught acts through the fuel in the tube 2, and slow combustion results. When the tubes 8 are open, air tends to pass through the thin layer of fuel near the periphery of the grate. The tubes 2, 8 may be lined with refractory material. The plates 9, 10 may be square instead of rectangular.
Patent GB-1236057-A (GB)
Title: Improvements in and relating to the manufacture of finned cylindrical articles
IPC: B21C37/26
Filed: 1968-10-10
Abstract: 1,236,057. Making finned tubes; rolling; coiling helices. GKN BIRWELCO Ltd., and L. G. HERBERT. 4 Dec., 1969 [10 Oct., 1968], No. 47970/68. Headings B3A, B3E and B3M. In a method and apparatus for making a finned cylindrical article, such as a tube, the article 10 is rotated and fed axially in the direction 13, a helical groove is formed in its outer surface, strip material is fed between the operative surfaces of a pair of rollers 32, 33, the axes of the rollers being transverse to the axis of rotation of the article and the operative surfaces being arranged such that the strip is curled around the article to engage it in an edgewise manner, the edge of the strip is inserted in the groove which is then closed to grip the strip. The groove is formed by a roller 21 against which the article is held by backing rollers (16), Fig. 2 (not shown). The groove is closed by a peening roller 28. The roller 32 is driven from the main drive 39 of the apparatus and its axis is coplanar with the longitudinal axis of the article. The roller 33 is in the form of a dish and has its axis coplanar with the longitudinal axis of the article but at an angle thereto of between 70 and 90 degrees, preferably 85 degrees. The operative surfaces form a triangular nip which causes the strip to curl and grip the article.
Patent GB-1413824-A (GB)
Title: Protection device for a power amplifying semiconductor element of an integrated circuit
IPC: H03F1/52
Filed: 1972-10-18
Abstract: 1413824 Transistor amplifying circuits SOC GENERALE SIMICONDUTTORI SpA 18 Oct 1972 [15 May 1972] 48014/72 Heading H3T In an integrated circuit, a conductor 13 of predetermined resistance R2 is included between the emitter terminal 12 of the output transistor 11 and the output terminal 14, the voltage across resistor R2 being used to prevent excessive dissipation in transistor 11; e.g. when the load is short-circuited. Transistor 22 is biased from a potentiometer network comprising resistor 23, diode 21 and the resistor R2, so that when either the voltage across the resistor R2, or alternatively the supply voltage, becomes excessive, transistor 22 is biased conductive, so rendering transistor 31 conductive: the drive applied to terminal 16 is then short-circuited.
Patent GB-1186862-A (GB)
Title: Improvements in or relating to fast nuclear reactors
Inventor: GRATTON CHARLES PETER
IPC: G21C1/02
Filed: 1966-04-29
Abstract: 1,186,862. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 24 April, 1967 [29 April, 1966; 28 Oct., 1966], Nos. 18894/66 and 48547/66. Heading G6C. In a fast breeder reactor, reactivity control during fissile fuel burn-up is effected by the breeding of fresh fuel from fertile material. Separate fissile masses of plutonium are separated by a fertile mass and are enclosed within an external fertile blanket. The production of fissile material in the fertile zones increases the neutron coupling between the fissile masses as the reaction progresses. The fuel elements are formed by assembling cylindrical pins inside a tubular, hexagonal shroud, through which the coolant, supercritical steam, flows axially over the pins. A central pipe disposed along the shroud longitudinal axis permits the injection of coolant into the fuel mass during an emergency. The coolant sprays between the pins from orifices in the central pipe in response to loss of pressure in the steam circuit. The shroud and the enclosed fuel are mounted vertically in the reactor and is seated at the lower end. If jamming at the seat occurs, disengagement is effected by the application of a downward force at the upper end which shears off the lower seating. The fuel pins have helical fins which fit into grooves at the surfaces of the pipe and shroud and have both fissile and fertile sections.
Patent GB-978911-A (GB)
Title: Improvements in articles of sportswear
IPC: A41D1/04
Filed: 1962-12-28
Abstract: Shirts and shorts for team games are reversible and have the outer surface of a colour which is different from that of the inner surface.  The two surfaces may be coloured by printing or spraying or may comprise fabric made of differently coloured layers of material. The collar and cuffs may be in a contrasting colour from the garment. The material may be knitted.
Patent GB-1046810-A (GB)
Title: Knock-down furniture or cabinets
Inventor: HUDSON LESLIE GORDON
IPC: A47B47/05
Filed: 1963-12-10
Abstract: 1,046,810. Dismountable cabinets. HUDSON PATENTS Ltd. Dec. 9, 1964 [Dec. 10, 1963], No. 48838/63. Headings A4B and A4H. A dismountable cupboard has parts including a base 1, base cover 2, back 3, door stile 4 and jamb 5, sides 6, door 7 and top 8 coupled together by pegs 19 on one part frictionally engaging in holes in other parts and held together by joining plates 10 having a hole 21 to engage a peg or screw 19 and an arcuate slot 22 to engage another peg, or by a clip 9 Fig. 22 (not shown). The base plinth has plates 12 which receive a bolt 14 for levelling the cupboard. This bolt may rest on a pad 47 Fig. 33.
Patent GB-973959-A (GB)
Title: Lubricant
Filed: 1962-12-31
Abstract: A lubricant comprises 60-99.9 wt. per cent of a lubricating oil and, as a gelling agent, a neutralized oxidation product of an olefine polymer.  The polymer may be of M.W. 600-6000 and after oxidation, e.g. by air, may be neutralized with inorganic bases of Na, K, Li, Ca, Mg, Ba, Sr, Al or Zn, or with amines, e.g. morpholine, mono-, di- or tri-ethanolamine, or fat amines.  The neutralized oxidized polymer may be complexed with a low M.W. carboxylate, e.g. acetate.  The lubricating oil base may be a paraffinic or naphthenic mineral oil, an ester (e.g. an ester of isononanoic acid with either an ethyl hexanol or isononyl alcohol), a stearic acid glycerol ester, or a vegetable oil (e.g. rape oil, soya bean oil, or linseed oil), and the oil may contain soaps, fats, waxes, polyolefines, fatty acids, wax acids and other conventional additives. Particularly optional additives mentioned are 12-hydroxy stearic acid, and hardened train oil fatty acids.  Specifications 905,883 and 918,295 are referred to.
Patent GB-1474186-A (GB)
Title: Light fittings
IPC: F21V21/30
Filed: 1973-10-23
Abstract: 1474186 Mounting lighting fittings ROTAFLEX (GREAT BRITAIN) Ltd 23 Oct 1974 [23 Oct 1973] 49286/73 Heading F4R  A light fitting comprises a body 1 and a swivel bracket 3 for mounting the body 1 with respect to an external support for rotation about two axes Al and A2 which intersect at 45 degrees at the centre of the part-spherical outer surface of the body 1 which fits against the bracket 3. The bracket 3, Fig. 2, has a first pivotal mounting 9 at one end 5 for receiving the body 1 to the bracket 3 about the axis A2 and a second pivotal mounting 5 at the other end for securing the bracket 3 to an external support, e.g. a wall, ceiling or lighting track, about the axis Al. As shown, the body 1 has cylindrical extensions from the part-spherical portion and the bracket is moulded in two halves 3A, 3B with a surface 12 shaped to the spherical part of the body. The bracket may be hollow so as to conceal the electrical supply flex 7. Alternatively, Fig. 3 (not shown), the fitting body is formed entirely as a major segment of a hollow sphere acting as a lampshade/reflector and the bracket is in the form of an arcuate arm having the pivotal mountings at its opposite ends.
Patent GB-1376945-A (GB)
Title: Pressure-sensitive recording material
IPC: B41M5/155
Filed: 1971-10-22
Abstract: 1376945 Pressure-sensitive recording sheets FUJI PHOTO FILM CO Ltd 22 Oct 1971 [23 Oct 1970 27 Oct 1970 10 Dec 1970] 49317/71 Heading D2B  Pressure-sensitive recording material comprises a sheet support carrying microencapsulated colour-former thereon and, on the same or a different sheet, a colour-developer composition in the form of a coated layer including a binder or a printed ink including a plasticiser and binder and containing a compound of a metal, other than an alkali metal, with an aromatic carboxylic acid, which compound is capable of forming a distinct colour when contacted with the colour-former. The acid is preferably a hydroxy acid and the metal preferably Zn, Sn, Al or Ni, although numerous others are specified. The developer may also contain an inorganic pigment which may be a simple silicate or an aluminosilicate. The colour developer composition may be prepared by dissolving or dispersing the metal carboxylate in water or an organic solvent and adding a binder such as gum arabic, ethyl or nitrocellulose, styrene-butadiene copolymer or copolymer latex, or methyl-methacrylate-butadiene latex. In another embodiment the binder is dissolved in the organic solvent, a plasticiser is added, and the metal carboxylate is dissolved or dispersed therein. Specified plasticisers include phosphoric, phthalic, adipic and sebacic acid esters chlorinated paraffin, and castor oil. An alkali metal salt of an organic acid may be added to the colour-developer composition as a stabiliser. Conventional colour-formers may be used, for example, crystal violet lactone, benzoyl leuco methylene blue, fluorans, spiropyrans malachile green lactone, rhodamine Blactam, or a mixture thereof. The colourdeveloper composition is coated on the support by any known method.
Patent GB-1460283-A (GB)
Title: Robot locomotive for pushing rolling stock
IPC: B61J3/12
Filed: 1973-10-24
Abstract: 1460283 Hydrostatic transmission/control JAPANESE NATIONAL RAILWAYS and KAYABA KOGYO KK 24 Oct 1973 [29 Dec 1972] 49483/73 Heading F2W [Also in Division B7] A hydrostatic transmission and control system of a shunting locomotive for pushing railway rolling stock, Fig. 6, comprises a hydraulic pump 16 drawing from a reservoir 17 to drive a pair of hydraulic motors 19a, 19b effecting rotation of pinions which mesh with racks to propel the locomotive. The direction of motor rotation is controlled by a forwardreverse control valve 67, supply to the motors 19a and 19b being either in series or in parallel under the control of a series-parallel switching valve 68. An accumulator 25 prevents loss of pressure in the system, and the various valves including 67, 68 of the system are electronically programme controlled. To provide dynamic retarding forces, working oil under pressure discharged from the motors 19a and 19b is returned to the suction ports thereof through a brake valve 71 and a relief valve 76. The system also includes a brake operating valve 66 leading to a brake cylinder 80 for applying mechanical retarding forces to the wheels of the locomotive; and a valve 69 for supplying hydraulic cylinders 34 to extend pusher arms 35 which engage wheels of rolling stock to be pushed by the locomotive. In the modified system shown in Fig. 7, the hydraulic motors 19c and 19d are of the variable displacement type provided with a servo cylinder 88 and servo valve 89. When braking is effected, a control valve 90 is closed so that oil is admitted into a pilot chamber of valve 89 and then into cylinder 88 to increase the displacements of motors 19c, 19d to the maximum, thus providing maximum torque for subsequent starting. At other times, the thrust of the motors is maintained constant by admission of high pressure oil into the pilot chamber of valve 89 via a shuttle valve 92 and valve 90, thereby operating the cylinder 88 to vary eccentricity of the motors 19c, 19d.
Patent GB-1363783-A (GB)
Title: Process for the production of a whey protein concentrate
IPC: A23C9/142
Filed: 1972-10-26
Abstract: 1363783 Whey protein concentrates J A MEGGLE [trading as MOLKEREI J A MEGGLE MILCHINDUSTRIE] 26 Oct 1972 [9 Nov 1971] 49488/72 Addition to 1313085 Heading C3H A process for the production of a whey protein concentrate comprises adjusting whey to a pH below the isoelectric point of the whey protein and then subjecting the whey to ultrafiltration at ambient temperature. The process is preferably performed at pH 2À7 to 3À3 and the whey may be adjusted in pH to that value by cation exchange. The whey may be used in admixture with a casein-containing milk derivative.
Patent GB-1097257-A (GB)
Title: Process for obtaining ammonium sulphate
IPC: C01C1/247
Filed: 1964-12-04
Abstract: (NH4)2SO4 is made by absorbing SO2-containing gases in the presence of oxygen in a solution containing 5-35% wt.  NH3 and previously formed (NH4)2SO3 in the presence of active charcoal and H3PO4, separating (NH4)2SO4 from the resulting liquor, e.g. by evaporation and filtration, and recycling the resulting liquor. The recycled liquor can be heated to maintain a reaction temp. of 60-80 DEG  C. in the absorption apparatus.  Heated ammonical solutions can be added to the absorption apparatus to maintain the reaction temp. of 60-80 DEG C. The active charcoal can be impregnated with the H3PO4 and be in the form of cylindrical granules and disposed in superposed sheets 1-2 in height.
Patent GB-1428710-A (GB)
Title: Polishing of workpieces
IPC: B24D7/18
Filed: 1973-10-24
Abstract: 1428710 Polishing LEAR SIEGLER Inc 24 Oct 1973 [21 Dec 1972] 49535/73 Heading B3D A polishing tool T comprises a body having a work-engaging portion formed essentially of a solid relatively soft and resiliently yieldable material and having a work-engaging surface, the material having a multiplicity of discrete solid particles of predetermined size embedded therein, the particles being frangible such that when the tool is rotated with its surface in pressure contact with a workpiece G the particles located at the surface are readily fractured and leave pores in open communication with the surface, the pores being of predetermined size corresponding to the size of the particles. The work-engaging portion of the body may be of polyurethane having a hardness between 75 Durometer A and 55 Durometer D, preferably 95 Durometer A, and the tool so formed in a mould, which may have a central core, the polyurethane incorporating, as the frangible material, particles of common table salt. The material cures at room temperature and is then ready for use. The tool T is formed in the shape of a gear and may be given an initial rolling in engagement with a gear to be polished so that the salt particles at and adjacent the tool surface leave a multiplicity of pores exposed therein. In use, the tool is rotated in mesh with the gear to be polished and a fluid polishing medium containing particles not exceeding 500 grit is supplied to the tool. The tool may have a crossed axes relation with the gear and one or other may be reciprocated. The direction of rotation may be reversed.
Patent GB-1140447-A (GB)
Title: Photographic flash apparatus
IPC: G03B15/04
Filed: 1966-11-04
Abstract: 1,140,447. Photographic flash apparatus. A. FISCHER. Nov.4, 1966 [Nov.11, 1965], No.49570/66. Heading G2A. A flash apparatus includes a rotatable socket 5 having a cruciform recess, the margins 8 of the socket between the limbs 7 of the recess being inclined to form a conically bevelled or funnel shaped recess. The socket is intended to accommodate a flash cube (1) Fig.1 (not shown), the undersides (4) of teeth (3) thereof being similarly bevelled.
Patent GB-1354952-A (GB)
Title: Slide tray indexing mechanism for slide projectors
IPC: G03B23/02
Filed: 1971-10-27
Abstract: 1354952 Optical projection apparatus GAF CORP 27 Oct 1971 [28 Oct 1970] 49999/71 Heading G2J [Also in Division F2] For use in a slide projector, a magazine indexing mechanism includes a plate 25 carrying pawls 26, 27, a pinion 22 for indexing the magazine, a slide carrier 16, a forward/reverse control plate 35 and guides 44, 45 for moving the pawls 26, 27 out of engagement with the pinion 22 after each indexing movement. As shown the slide carrier 16 is in the slide projecting position. To index the magazine the carrier 16 is moved to the left (as viewed). The plate 35 is in position for forward indexing since its tab 37 has pushed the plate 25 from being symmetrically placed under the carrier 16 so that its pawl 26 may engage the pinion. As the carrier 16 moves to the left the plate 25 is moved towards the pinion 22, by tab 41 of the carrier 16 engaging plate 40, the pawl 26 engages the pinion 22, advances it by a distance sufficient for the slide magazine to advance by the distance between adjacent slides and is moved to a neutral position, with neither pawl 26, 27 contacting the pinion 22, by the action of pawl 27 on guide 45. For reverse indexing the plate 35 is moved so that tab 38 abuts plate 25 thereby causing pawl 27 to engage the pinion 22 and pawl 26 to engage the guide 44. After the pawls 26, 27 have passed to the neutral position the pinion 22 is held by a light detent 48 which permits manual adjustment of the magazine. The magazine is linked to the pinion 22 by means of a coaxially mounted pinion mounted above it.
Patent GB-1108219-A (GB)
Title: An agent of high absorption capacity for binding substances which are insoluble in water
IPC: C08K3/36
Filed: 1966-11-08
Abstract: A composition for absorbing oil from water comprises a hydrophobic silica and an absorbent for organic water-insoluble substances such as sawdust, powdered cork and natural and synthetic silicas or silicates.  The hydrophobic silica may be prepared by pyrohydrolysis of silicon tetrafluoride or by coating silica with organosilicon compounds.
Patent GB-1333287-A (GB)
Title: Pure nonlinear transfer circuit
IPC: G06G7/24
Filed: 1971-10-29
Abstract: 1333287 Logarithmic amplifiers BECKMAN INSTRUMENTS Inc 29 Oct 1971 [27 Nov 1970 50324/71 Heading G4G A pure non-linear, e.g. logarithmic, transfer function is obtained by compensating for undesired linearity in the characteristic of a non- linear element, e.g. a diode or transistor. The voltage V<SP>1</SP> across such an element may be written where V(i) is the non-linear (current dependent) part of the voltage and iR e  is the undesired linear part, R e  being, e.g. the bulk resistance of the emitter of a transistor. In the dual-channel logarithmic amplifier shown, the two collectoremitter paths of a dual transistor 19 are connected respectively between the inverting inputs and the outputs of operational amplifiers 5, 25. The amplifiers are also provided with input and output resistors respectively 13, 29 and 15, 31, the terminals of these resistors remote from the amplifier being connected by respective potentiometers 38, 40 and 39, 41 which provide the desired compensation. By considering the currents at node 16, it can be shown that a purely non-linear transfer function can be obtained if R 40 /K 1  = R 13 R 15 /R e  where K 1  is the setting of the potentiometer 38, 40 and the subscripts refer to the designations of the resistors on the drawing. A similar result is obtainable for the other channel of the dual amplifier. The outputs of the channels are connected by a double pole switch 36, 37 to respective inverting and non-inverting inputs of an operational amplifier 33. Letting the ratio R 35 /R 31  equal a, it can be shown that where the subscripts refer to the two channels. In the case of a transistor, this becomes where b is equal to aKT/q, K is Boltzmann's constant, T the absolute temperature and q the charge on the electron. The last equation may also be written V out  = b.ln(i 1 /i 2 ) or, making R 13  equal R 29 , V out  = b.ln(V s /V r ). By using a dual transistor, temperature effects are eliminated. By moving the double-pole switch 36, 37 to its other position, the alternative result may be obtained.
Patent GB-1409188-A (GB)
Title: Pile hood for vibratory pile driving
IPC: E02D13/10
Filed: 1973-10-31
Abstract: 1409188 Pile driving head FOUNDATIONS PATENT & INVESTMENT CO NV 31 Oct 1973 50529/73 Heading E1H A pile driving head for releasable fitting onto a pile end comprises a metal cover plate 5 adapted to rest on the end of the pile 1, the cover plate having apertures for receiving connecting rods 12 projecting from the end face of the pile. A downwardly extending wall portion 5' secured to the cover plate surrounds the end of the pile and tubular member 6 secured to the cover plate extends upwardly to contain the projecting ends of the connecting rods. This tubular member has attachments adapted to be connected to a vibratory pile driver.
Patent GB-1253829-A (GB)
Title: Improvements in or relating to amplitude modulators
Inventor: BANASIEWICZ HENRYK
IPC: H03C1/54
Filed: 1968-10-24
Abstract: 1,253,829. Amplitude modulators. G. & E. BRADLEY Ltd. 20 Oct., 1969 [24 Oct., 1968], No. 50574/68. Heading H3R. An amplitude modulator comprises a bridge formed by field effect transistors 12, 13, 14 and 15 preferably of same type transformer 17 coupling carrier oscillator 16 to corners 18, 19, a differential amplifier 20 connected across corners 23, 24 and a modulating signal connected to gates 32-35 of the transistors. The transistors 12, 13 and 14, 15 are matched pairs. The modulator may be arranged to supply an A.C. output signal controlled by a D.C. modulating signal applied to amplifier 29. The transistors are operated in a small nearly linear region extending on either side of the origin of their drain current Vs drain-source voltage characteristics. The drain-source resistances of transsistors 12, 14 are arranged to be greater than, equal to or less than the drain-source resistances of transistors 13, 15 according as the modulating signal at input of amplifier 21 is positive, zero or negative relative to earth. The bridge configuration of the transistors and the differential amplifier 20 eliminate any second harmonic distortion produced.