baber/WOPTO huggingface dataset:
Patent GB-796481-A (GB)
Title: Improvements in and relating to electromagnetic indicators
Inventor: SINCLAIR WILLIAM
IPC: G08B5/28
Filed: 1956-12-29
Abstract: 796,481. Electromagnetic indicators. ERICSSON TELEPHONES, Ltd. Dec. 29, 1956, No. 39575/56. Class 40 (1). An electromagnetic indicator, e.g. for use in a telephone switchboard comprises a central core surrounded by a coil 8, side limbs 11, 12 which are bridged at the ends by an arcuate polepiece 33, and a pair of arcuate armatures 32 pivoted one on each side of a fixed central polepiece 4 and spring-loaded to a position (Fig. 1) where they cover the polepiece 33 and which when coil 8 is energized rotate to expose it (as shown in Fig. 2). The armatures 32 are pivoted on brass pins 30, Fig. 4, projecting from the side limbs, the energization of the coil causing the rear surfaces 38 of the armatures to be drawn against polepiece 4. The return spring 23 is crossshaped, an arm bearing on the edge 36 of each armature and an upper end 28 acting as a contact. The indicating face 29 of polepiece 33 and the inside faces of the armatures may be similarly coloured to give a clear indication when the coil is energized. A transparent cover 13, Fig. 1, is provided.
Patent GB-823494-A (GB)
Title: Improvements relating to pressure screw conveyors
IPC: B29C48/38
Filed: 1957-12-20
Abstract: A pressure screw conveyer, for conveying shreds of synthetic substances to a melting grid in the manufacture of synthetic films and filaments, has rotatably mounted guide surfaces mounted in the zone following the pressure screw, so as to distribute the conveyed material uniformly in the zone following the pressure- <PICT:0823494/IV (a)/1> <PICT:0823494/IV (a)/2> <PICT:0823494/IV (a)/3> screw chamber.  The guide surfaces may be fixed directly to the pressure screw and be movable therewith.  As shown, a melt-spinning device (Fig. 1), comprising a pressure-screw chamber 1, melting grid holder 2, sump 3, delivery pump 4 and spinning nozzle 5, has a pressure screw 6 rotatably mounted therein, driven by motor 8 via shaft 7.  Shreds enter through inlet 9 and are forced by rotation of the pressure screw 6 towards grid holder 2. The guide surfaces may comprise a flat spiral 10, consisting of two guide spirals 11 and 12 (see Fig. 2), held by a plate-like element 13 (see Fig.3), secured by a spigot 14 to the pressure screw 6, so that as said screw rotates, the flat spiral 10 rotates with it and thereby guides the shreds from the annular zone following the screw threads of the pressure screw radially inwards over the inlet edges 16 and 17 of the guide spirals 11 and 12, so that the shreds conveyed to the central zone following the pressure screw are in the same density as in the annular zone following the screw threads of the pressure screw.
Patent GB-883899-A (GB)
Title: Improvements in and relating to electrical equipment
Inventor: BENTON-TARRY PETER ALBERT
IPC: H02M7/5383
Filed: 1958-12-10
Abstract: 883,899. Control of A.C. motors. AIR TRANSPORT (CHARTER) (C1) Ltd. Dec. 10, 1959 [Dec. 10, 1958], No. 39827/58. Class 38 (3). An electric motor is supplied with A.C. derived from a transistor oscillator comprising transistors 10, 11, operated in parallel and coupled by coils 14, 15 on a common core. Transistors 12, 13 are also in parallel and are coupled by coils 16, 17 on the same core, a local battery voltage being applied at terminals 20. A rectifier 21 is connected between the base and emitter electrodes of the transistors to ensure the starting of oscillation under loaded conditions. An additional winding 25 on the oscillation transformer is used to supply the motor which is of the type without a commutator, a rectifier 26 being provided to afford a separate source of high-voltage D.C. The motor may drive a fan to cool the oscillator. A capacitor 29 may be placed in circuit with the motor for making the current fed to the motor more nearly sinusoidal.
Patent GB-966582-A (GB)
Title: Improvements in or relating to document copying apparatus
IPC: B65H29/56
Filed: 1961-06-13
Abstract: 966, 582. Stripper devices for copying apparatus. KODAK Ltd. June 13, 1961 [June 13, 1960], No. 39925/63. Divided out of 966,581. Heading G2A. A document copying device has transport means for advancing a matrix and a copy sheet in intimate contact therewith during movement of the transport means through a predetermined cycle, sheet stripping means moveable with the transport means, and interconnecting means between said transport and sheet stripping means operable at a predetermined point in the cycle to stop movement of the stripping means with the transport means whereby the sheet is stripped from the matrix. In the embodiment shown, a matrix 9 and copy sheet 34 are transported on a drum 8 mounted on a rotatable shaft 16 and the copy sheet is then stripped off by stripper 7, 11. The stripper is resiliently mounted in a lever 13 by means of pivot pin 12 and spring 14; lever 13 is rotatably mounted on the shaft 16 and has a stop 18 at the other end. During the initial movement of the drum the stripper is also rotated by means of a cam tooth 36 on the drum engaging a lug 37 on the lever 13 and is inoperative until stop 18 abuts a stop 33 when the lever 13 is held stationary, lug 37 rides over the circular edge of cam 26 and the copy sheet is stripped off as the drum rotates. When the lug falls on to the surface of cam 26 the stripper and lever 13 are rotated into the inoperative position (shown) by spring 19. Specification 939,691 also is referred to.
Patent GB-1095965-A (GB)
Title: Soil coating composition
IPC: A01G13/02
Filed: 1966-09-07
Abstract: A mulch comprises a basic or acidic aqueous emulsion of 30-70% of asphalt and 0.1-5.0% of polyisobutylene having a m.w. of 600-50,000. The composition contains a known emulsifying agent and may also contain cut-back naphtha.
Patent GB-874201-A (GB)
Title: Starting systems for internal combustion engines
Inventor: GREENLY KENNETH HOWARD
IPC: F16H39/02
Filed: 1959-11-26
Abstract: 874,201. Fluid-pressure servomotor control systems; hydraulic transmission of power. NAPIER & SON Ltd., D. Nov. 26, 1959, No. 40267/59. Addition to 836,069. Classes 69 (2) and 135. [Also in Group XXVII] The system of the parent Specification is modified by the inclusion of a pump delivery control mechanism (see Fig. 1). A servo pump 43, Fig. 3, provided with by-pass relief valve 44 delivers fluid at constant pressure to the two branches 48, 49 of the valve assembly 45. Outflow is controlled by pressurizing valve 47. Connected between the branches is a servo cylinder 50 containing a spring-loaded piston 51, connected to the pump 16 by link 52, the position determining the volumetric delivery of the pump per revolution. The piston position in the cylinder is determined by the pressure difference between its left-hand and right-hand faces, which in turn is determined by the position of an inflow distributer valve 53, an outflow distributer valve 54, and a dump valve 55, all three being connected to yoke 56 the position of which is determined by a bellows 57 loaded by a spring 58. The interior of the bellows is in communication with the delivery side of the pump through line 59, with a pressure relief valve 60. Operation: a maximum pressure determined by relief valve 60 is built up by the pump 16 driven by the electric motor 15 with the two valves 29, 30 closed. As the pressure builds up, the bellows 57 expand, moving valves 53, 54 and 55 to the left so that the piston 51 moves to the left, reducing the delivery of the pump. When the maximum pressure is obtained the bellows will be fully expanded with valves 53, 54 and 55 and piston 51 in their left-hand positions. On opening valve 29, in order to start engine 12 by hydraulic motor 17, the pump delivery pressure will fall so the bellows will begin to contract. This will cause valves 53, 54 and 55 to move to the right, thereby causing piston 51 to move to the right to increase the pump delivery and restore the pressure to its previous value. Thus up to the full capacity of the pump, its volumetric delivery per revolution is automatically adjusted to maintain a constant delivery pressure.
Patent GB-1217257-A (GB)
Title: Manufacture of polymeric thermoplastic sheet material in web form
Inventor: SPENCER ARTHUR WILLIAM
IPC: B29C59/04
Filed: 1968-08-23
Abstract: 1,217,257. Finishing edges of non-metallic sheet material. EASTMAN KODAK CO. 23 Aug., 1968 [24 Aug., 1967], No. 40351/68. Heading B5K. [Also in Division B6] The edges of a web 10 of an oriented polymeric thermoplastic sheet material are physically reformed to improve the winding and guiding characteristics of the web by mechanically embossing the edges of the web 10 to increase the thickness thereof and locally preheating the edge portions of the web immediately prior to the embossing operation to a temperature sufficient to cause a shrinkage of the edge portions due to relaxation of the oriented molecular segments thereof. As shown, each edge of the web 10 is knurled by passage between a pair of wheels 12, 12<SP>1</SP>. The axle of the wheel 12<SP>1</SP> is fixed against transverse movement and the wheel 12 is urged upwardly by a pneumatic cylinder 14 to produce the desired embossing thickness. The projections formed by the knurling operation may rise above only one face of the web, Fig. 4 (not shown), or extend beyond both faces thereof, Fig. 5 (not shown). The preheating operation may be effected by an infra-red heater 20, hot air blasts or heated rollers. Specified thermoplastic materials are polyesters, polyamides and polycarbonates. In an example, polyethylene terephthalate sheeting 1-10 mils thick is preheated at a temperature of 170-280 F. and embossed at a pressure of 20-150 lbs. per lineal inch of roller nip.
Patent GB-890582-A (GB)
Title: Improvements in or relating to machines for the manufacture of webs of fibrous material
IPC: D21F11/04
Filed: 1958-12-16
Abstract: 890,582. Paper-making machines. LIPPKE, P. Dec. 16, 1958 [Dec. 23, 1957], No. 40556/58. Class 96. In a paper-making machine comprising a sieve part, a wet press part, and a dryer part, the dryer part extends wholly or partly underneath the sieve and wet press parts so that waste heat from the dryer part pre-heats and pre-drys the paper web. In Fig. 1 a web is formed on a sieve and fed to a suction roller 1 comprising a suction chamber 2, and a compressed air chamber 3 which is subdivided into two compartments, the smaller of which is the first to be supplied with compressed air to blow a tip of the web formed by a spray cutter 6 on to a felt 4 ; thereafter the cutter is moved aside and the larger compartment blows the entire web on to the felt 4 and web initially adhering to the sieve is blown into a trough 9 for re-use. The web is then carried on felts 4, 11 which are conducted above the dryer casing for pre-heating, through wet presses 5, 10 to a reversing press 14, each press having an automatically-operated doctor on its upper roll and associated release rollers and blowers. The press 14 and associated felt 18 are located within the outer casing in a channel and are heated by hot air flowing from the dryer part which may be fan-assisted. A light metal travelling sieve 20 holds the web on to the felt 18 for a substantial path, hot air blowers 19, 21 being directed toward the web from above the sieve and below the felt respectively. A flap 35 in the casing at the lower end of the sieve and felt path is operable by remote control to blow the web out of the casing in emergency but normally a blower 23 transfers it to a drying felt 24 to traverse a series of drying drums 25 . . . 31 having a system of doctors and multi-hot-air jet blowers whereby the web is continuously passed between the lower felt 24 and an upper felt 27 which felts are dried by passing over dryer rolls 32, 33 and around perforated hollow guide rolls supplied with hot air. Finally the web is cooled by conducting it on a heat-conductive open metal webbing around a cooling cylinder 34. Paper machines are also described in which " Yankee driers " are utilized.
Patent GB-1358738-A (GB)
Title: Infra-red interference filters
IPC: G02B5/28
Filed: 1971-08-31
Abstract: 1358738 Optical filter OPTICAL COATING LABORATORY Inc 31 Aug 1971 [10 Sept 1970] 40626/71 Heading G2J An optical filter has a light-transmissive substrate, and a coating on the substrate comprising first and second bi-layers, each bi-layer comprising a layer of metallic silver of thickness 55-130A and a pre-coat layer having a thickness less than that which by itself would affect the optical properties of the filter. The filter transmits visible and reflects infrared. As shown, substrate 11, e.g. of glass, has a layer 27 of dielectric material, e.g. Al 2 O 3 , MgF 2 , TiO 2  a bi-layer comprising a first layer 28 e.g. of Rh, Pd, W, Ni, titanium monoxide, silican monoxide, aluminium oxide, and the silver layer 29, followed by a further layer 31 of the same material as the first layer of the bi-layer, a dielectric layer 32, then a second bi-layer (layers 33 and 34), followed by a further layer 36 of the same material as the first layer of the bi-layer, then by a dielectric layer 37. In another embodiment Fig. 1, (not shown) the first bi-layer is deposited directly on the substrate - I.C. dielectric layer 27 is omitted -and layers 31 and 36 are also omitted.
Patent GB-1099673-A (GB)
Title: Improvements in fluid pressure motive systems, for borehole drilling
Inventor: WHITTLE FRANK
IPC: E21B4/02
Filed: 1963-10-15
Abstract: 1,099,673. Boring earth &c. SIR FRANK WHITTLE. Oct. 13, 1964 [Oct. 15, 1963], No. 40667/63. Addition to 1043692. Heading E1F. [Also in Division F1] Borehole drilling equipment comprises a hydraulic ram 50, a down-hole drilling motor 52, a positive displacement pump 34 driven by the motor to circulate fluid about a flow path, control and loading orifice systems O C , O L  (Fig. 2) in series in the path and arranged so that the ram is subjected to the pressure drop over the loading orifice system only, means 9, 10, 20 for varying the area of the loading orifice system to maintain the pressure drops across the systems proportional to one another, means 28 for reducing the area of the control orifice system with increase of flow through it, and means preventing reduction of the control orifice below a minimum. Oil from the pump passes to the orifice Oc by way of an orifice O A , the piston 28 varying the orifice Oc being moved by differential pressure and the head of the piston being too small to completely block the orifice Oc. The piston and needle 9, 10, 20 are moved by oil pressures to vary the orifice O L , the oil by-passing the orifice O L  passing along a duct 11, 15 to a chamber 5 above the piston 4 of the ram, and the oil passing through the orifice passing to a reservoir 38 connected to a chamber 6 below the piston 4. The reservoir is maintained at the pressure of the drilling fluid which passes through a duct 31 to rotate the turbine 52 before passing through the bit 54 to remove debris from the borehole. The ram, motor and bit may be slowly rotated bodily from the surface. The turbine is lubricated by oil tram the low pressure side of the pump. In modification the head of the piston 28 is prevented from blocking the orifice Oc by stops or a small flow constantly by passes the orifice Oc. As shown in Fig. 5 the piston 28 has a skirt closing the orifice Oc and the orifice O A  is formed in the piston 28. The orifice systems are housed in the piston 4 which is in tandem with a piston 4a. In a further modification (Fig. 6, not shown) the orifice systems are housed in a partition dividing the ram into tandem cylinders. In yet another modification the loading system orifice may be upstream of the control orifice system.
Patent GB-407621-A (GB)
Abstract: 407,621. Gas-lighters. HODGES, C. G., 19, Spencer Gardens, Eltham, London. Sept. 15, 1933, No. 25610. [Class 75 (iii).] An electric gas-lighter comprises a resistance wire 5 mounted in the perforated conical end 2 of a metal tube 1 fitted at the other end with an Edison screw cap 3 for attachment to an ordinary flash lamp or torch case. In one form, the wire 5 is connected between a wire 4, fixed to the apex of the conical end, and a central electrode 6. In a second form, one end of the wire 5, Fig. 3, is connected to a tongue 13 on a metal strip 10 having resilient projections 12 for engaging the inner surface of the tube 1, the other end of the wire being connected to an insulated electrode 6 secured by insulating tape 11 in a groove in the strip.
Patent GB-1139015-A (GB)
Title: Food composition and preparation thereof
IPC: A23L27/20
Filed: 1967-09-06
Abstract: 1,139,015. Fresh fruit flavour. INTERNATIONAL FLAVORS & FRAGRANCES Inc. 6 Sept., 1967 [14 Sept., 1966], No. 40773/67. Heading A2B. Fresh fruit flavour is imparted to food compositions by adding thereto 2-alkyl-2- pentenoic acids, preferably 2-methyl-2- pentenoic acid, preferably in an amount of 0.5-25 ppm. The acid may be added admixed with flavouring materials and a carrier selected from solvents, non-solvents in combination with an emulsifier, and particulate solids. The flavouring material may be a strawberry flavour being an ester, ether, aldehyde, alcohol, ketone, or organic acid.
Patent GB-1244721-A (GB)
Title: Glass composites
Inventor: EVANS LEE STANLEY
IPC: C03B19/02
Filed: 1967-09-06
Abstract: 1,244,721. Reinforced glass. COURTAU L DS Ltd. 6 Dec., 1968 [6 Sept., 1967], No. 40814/67. Heading ClM. Reinforced glass is produced by embedding in a matrix of glass, carbon or graphite filaments coated with a metal. Coating of the filaments may be by electrodeposition, electroless plating or chemical plating and metals suggested are Ni, Cr, Co, Rh, Pa or Ru. The filaments may be in random orientation but preferably are laid substantially parallel with one another and alternate layers may be at an angle, such as a right angle with each other. The process is preferably carried out in vacuo. The carbon filaments are desirably obtained from filaments which are polymers or copolymers of acrylonitrile and which have been graphitized. Specification 1,215,002 is referred to.
Patent GB-1517507-A (GB)
Title: Furniture
IPC: A47C5/06
Filed: 1975-09-19
Abstract: 1517507 Furniture frames and joints REMPLOY Ltd 19 Sept 1975 [21 Sept 1974] 41230/74 Heading A4H [Also in Division F2] A chair 10 or other article of furniture comprising an upper or outer part 12 and an underframe 14 is assembled by inserting projections 22, moulded or otherwise provided on a seat or analogous portion of the furniture part 12, through apertures 28 in the underframe, and securing the assembly by studs 34 each having a head 36 larger then the corresponding aperture and a shank 32 having one or more ribs or grooves 38, the shank being pushed into a groove or bore 30 formed between bifurcations of the associated projection 22 where it is snap fitted by engagement of the rib(s) or groove(s) with a corresponding groove(s) or rib(s) 40 in the walls forming the sides of the groove or bore 30. The underframe is preferably formed by tubular members flattened locally in the regions of the apertures 28. The projections 22 are preferably of rectangular cross-section and each is preferably surrounded by a wall comprising sides 24 and ends 26, the latter providing recesses to accommodate the tubular underframe members.
Patent GB-1161720-A (GB)
Title: Large Aperture Lens
IPC: G02B13/00
Filed: 1967-09-11
Abstract: 1,161,720. Optical objectives. JOS. SCHNEIDER & CO. OPTISCHE WERKE. Sept.11, 1967 [Sept.15, 1966], No.41313/67. Heading G2J. A photographic objective of focal length f has two air-spaced positive singlets L1, L2 forming a first group of focal length fI, two negative meniscus doublets concave to the diaphragm between them and forming groups II, III, of focal lengths fII, fIII respectively, and a fourth group IV consisting of three air-spaced singlets L7, L8, L9, lenses L1, L7 being bi-convex and lenses L2, L8, L9, being menisci wherein:- fv > 8fH <f>H < 0À3FI fII < 4F FIII < 4F D9/r10 > 0À4 r11 + r13 + r15 < 0.4(R2 + r4) r11 > rI3 > r15 #r7 +#r8 > 1À7 (#r5 + (#r10) r7 + r8 < #DH r8 < 0À5 #DH n5 - n4 > 0À 15 n5 < 1À65 15 < (#VSP- #VSN)< 25 WHERE Fv = focal length of groups I, II, fH = focal length of groups III, IV, #rn= refractive power of the n<TH> surface, #dH= total length of groups III, IV, #n5 = arithmetic mean of the refractive indexes of all the positive elements, #Vsp= arithmetic mean of the V values of all the positive elements, and #VSN= arithmetic mean of the V values of all the negative elements. Optical data are given for the example shown.
Patent GB-1356305-A (GB)
Title: Gas-fired space heaters
IPC: F24H3/08
Filed: 1971-09-08
Abstract: 1356305 Air heating stoves; space heating or cooling units; burners GENERAL ELECTRIC CO 8 Sept 1971 [10 Sept 1970] 41877/71 Headings F4S F4V and F4T In a gas-fired space heater of the kind described in Specification 1,347,509, the burner unit 12 comprises an inverted horizontal elongate trough 26 whose vertical side walls 27, 28 are each provided with a number of rows of apertures 29, 29b, 30, 30b for primary and secondary combustion air supplied by a blower (31, Fig. 1) through a conduit 34. A fuel gas supply conduit 36 extending longitudinally through the trough has a plurality of rows of fuel gas inlet apertures 37a, 37a<SP>1</SP>, 37b, 37b<SP>1</SP> in its bottom surface. The rows of apertures 37a, 37a<SP>1</SP> are longitudinally offset with respect to the rows of apertures 37b, 37b<SP>1</SP> but are aligned with the combustion air inlet apertures 29, 29b, 30, 30b in the adjacent trough side wall.
Patent GB-1016797-A (GB)
Title: Improvements in or relating to methods of selective printing
IPC: B41J2/385
Filed: 1964-10-14
Abstract: 1,016,797. Recording paper. SPERRY RAND CORPORATION. Oct. 14, 1964 [Oct.17, 1963] No. 41940/64. Heading D2B [Also in Division B6] In an electrostatic selective printer (see Division B6) the recording medium 40, Fig. 5, used comprises a base substance 41 which is impre nated with a material 42 which contrasts in colour with an outer opaque coating material 43. The impregnating material 42 may be finely divided carbon and the outer opaque coating material 43 may be powdered zinc oxide. The white zinc oxide is selectively removed from the base by a radio frequency electrostatic discharge to reveal as a point black alphanumeric images of type characters on type wheels of the pointer. The preparation of the recording medium 40 highly porous carbon-transfer paper is used and the zinc oxide is applied to its surface as a continuous unbroken layer. The zinc oxide is first mixed with a nitrocellulose binder, acetone being used as a solvent, and the mixture then applied to the surface of the carbon-transfer paper with a brush or roller.
Patent GB-1385756-A (GB)
Title: Filter for filtering gas containing dust
IPC: B01D46/02
Filed: 1972-09-11
Abstract: 1385756 Filter for gas containing dust MASCHINENFABRIK BETH GmbH 11 Sept 1972 42140/72 Heading B1T In a filter for gas containing dust in which gas to be cleaned is passed from chamber 2 through a number of filter elements 5 and clean gas is delivered into clean gas channels comprising sections 8 and 10, to clean gas chamber 6 the sections 8 are individually separable from the sections 10 so that they can be removed upwardly together with suspended filter elements from housing 1. The elements are arranged in groups, each group being suspended from a section 8 of a clean gas channel. Gas nozzles on pipe 11 carried by a reciprocating carrier 12, are provided for reversing the flow of gas through the channels and elements to clean the elements. The sections 8 are suspended by fittings 15a and b which are detachable. The internal element support Fig. 4 (not shown) are hinged in the centre of their length to allow removal in restricted height spaces. . In an alternative arrangement the sections 8 and elements 5 may be inverted, the ends of the elements being suspended at the level of section 8 in drawing.