baber/WOPTO huggingface dataset:
Patent GB-954644-A (GB)
Title: Improvements in color projection systems
IPC: H04N9/16
Filed: 1960-07-27
Abstract: 954,644. Projection systems. GENERAL ELECTRIC CO. July 27,1960 [Aug. 21,1959],  No. 26096/60. Addition to 944,247. Heading G2J. Apparatus for reproducing a colour image on a screen 80 comprises a light modulating medium 12 carrying orthogonal gratings 22<SP>1</SP>, 21<SP>1</SP> of which grating 22<SP>1</SP> contains information relating to the intensity of one colour component and grating 21<SP>1</SP> contains information relating to the intensity and colour content of the other colour component. Associated with the gratings are masking means 64, 76, each containing co-operating slits 65, 77 and 66, 78, undiffracted light from slits 65, 66 being blocked by the opaque areas between slits 77, 78 respectively. Only the colour component controlled by grating 22<SP>1</SP> is projected on this grating, the other colour components being projected only on grating 21<SP>1</SP>. Thus, in one form, white light from lamp 11 is directed to a reflector 68 whereby cyan light is incident on the slits 66, the red light transmitted by reflector 68 being reflected by mirrors 69, 70 on to the two slits 65. In an alternative, white light is directed on to mask 64 and colour selecting filters are disposed between slits 65 and medium 12 and also between slits 66 and medium 12. Specifications 898,556 and 902,397 also are referred to.
Patent GB-430868-A (GB)
Title: Improvements in or relating to valves or cocks
IPC: F16K31/524
Filed: 1934-09-11
Abstract: 430,868. Stop valves. KANSARA, M. C., 118, Ambaji Road, Surat, Bombay, British India. Sept. 11, 1934, No. 26110. [Class 135] A stop valve 1 has a sleeve 4 screwed into the upper part thereof and formed with a spiral cam 13 at its lower end adapted to coact with a similarly shaped cam 8 formed on the upper surface of a closure member 7 carried by a rotary spindle 5 journalled in the sleeve, so that rotation of the spindle 5 by a handle 6 causes the valve to be opened or closed. The cam surface on the sleeve 4 is in two parts each extending over half the circumference and separated from one another by stops 16, and the cam surface on the member 7 is similarly formed and provided with stops 14, the engagement of the stops 14, 16 serving to limit the permissible rotation to 180‹. The lower surface of the member 7 is plane with a central projection 9 to accommodate a washer 10 adapted to coact with a seating 11.
Patent GB-1422882-A (GB)
Title: Glass-fibre reinforced thermoplastic moulding material containing inorganic pigments
IPC: B29C48/04
Filed: 1973-06-01
Abstract: 1422882 Glass-fibre-reinforced thermoplastics BADISCHE ANILIN- & SODA-FABRIK AG 1 June 1973 [2 June 1972] 26155/73 Heading C3R A glass-fibre-reinforced thermoplastics moulding material contains an inorganic pigment with Moh hardness <5. The mixture may contain 10-60% wt. glass fibres. The pigment may be ZnS. The thermoplastics material may be polybutylene terephthalate, polycaprolactam, styrene polymers, polyoxymethylenes, polyolefins, or PVC. Also present may be glass spheres, chalk, mica, talc, processing aids, stabilizers, or organic pigments or dyes, e.g. a phthalocyanine dye. The pigments may be used as a masterbatch, tumbled with the plastics before forming the mixture, or added later, e.g. during injection moulding. The mixture may be granulated. Contrasting examples relate to the use of rutile TiO 2  with Moh hardness 6À0-7À0.
Patent GB-1533894-A (GB)
Title: Hole boring device
IPC: B23B51/00
Filed: 1977-05-17
Abstract: 1533894 Planing; grinding S F WELLS 17 May 1977 [24 June 1976] 26235/76 Headings B3L and B3D [Also in Division B5] A hole boring tool comprises an elongate head 124 provided at one end with a cutting or abrading member 131 which oscillates about an axis extending transversely of the head to form a hole having straight edges, the dimensions of the head being such that during boring of the hole the head can be advanced into the hole. The member 131 may be connected to a rack 105 via a gear train 126-130, the rack being reciprocated to cause oscillation of the member on rotation of a crank 120. In an alternative embodiment (Figs. 1 and 2, not shown) the cutting or abrading member (25) is oscillated when a crank (7) connected by a rod 11 to a further larger crank (9) carrying the member (25) is rotated to cause the further crank (9) to oscillate.
Patent GB-1244212-A (GB)
Title: Improvements in or relating to inductive voltage dividers
Inventor: DEACON THOMAS ALAN
IPC: H01F27/42
Filed: 1968-05-31
Abstract: 1,244,212. Inductive voltage dividers. NATIONAL RESEARCH DEVELOPMENT CORP. 29 May, 1969 [31 May, 1968], No. 26343/68. Heading H1T. An inductive voltage divider comprises at least one "two-stage" auto-transformer A which has a first primary winding 12 (Fig. 1) embracing one 10 of two cores 10, 11 and a second primary 13 (in parallel) embracing both of the cores, the second primary 13a (Fig. 3) being divided into (e.g. a decade of) series connected sections. Two or more "two-stage" auto-transformers A, B may be linked to form a multi-stage inductive voltage divider. A secondary winding 14a (of the first decade stage A), which also embraces both cores 10a 11a, may be used to energize the first winding 12b of the second decade stage B. Alternatively, a separate "two-stage" transformer (25, Fig. 4 not shown), whose secondary (28) energizes the first primary (12b) of the decade stage B, may be connected in parallel with A. A further secondary (29) may be used to energize third and possibly subsequent stages. The cores 10, 11 &c. may be toroidal and of similar diameters, but may be of different materials and crosssectional areas. Each second primary winding 13a (13b) may be ten-strand cable (described in Specification 997,050) whose strands are serially connected between tappings in such an order that voltage division errors in successive strands tend to cancel out. Voltage division errors at audio frequencies at the bridge circuit (Fig. 2, not shown), may be reduced by providing five terminals, i.e. separate terminals (20, 21) and leads (22, 23) for the first primary winding (12).
Patent GB-449128-A (GB)
Title: Improvements in or relating to temperature-pressure altimeter
IPC: G01L19/00
Filed: 1935-09-23
Abstract: 449,128. Altimeters. JACKSON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London.-(Kollsman Instrument Co., Inc. ; 1, Junius Street, Brooklyn, New York, U.S.A.) Sept. 23, 1935, No. 26347. [Class 106 (ii)] The instrument comprises an altitude indicator, barometric mechanism responsive to the temperature of the atmosphere-operating said indicator, and a variable mechanism settable to temperatures at the ground to vary the action of the barometric pressure means or the temperature means or both. The barometric capsule D is carried in an insulated casing A with a vent to the atmosphere but in which the temperature changes slowly. Movement of the capsule is transmitted through a link 23 and arm 22 on a spindle 16 to the latter and hence through sector 18 and gear 14 to a pointer 9 moving over a scale 8 on a rotatable annulus 7. This carries a washer 12 reading against a fixed scale 11 of millimeters of mercury visible through a window 10 of the annulus. The upper end of the spindle 16 is carried in a fixed bearing, but the lower end is carried in a lever 21. The fulcrum of the lever 21 is carried by the forked end of a sliding rod 35 which may be moved by a cam 38 set from a button 66 operating through gears 64, 63, 62, the latter of which carries a ground temperature washer 61 working in an arcuate slot separating the scale of temperatures 49 from the plate 6. A temperature element, comprising a bulb or tubular spiral is located on a wing or strut and freely exposed to the free air in which the plane is moving. This bulb together with a capillary tube connecting it to a Bourdon tube C and the latter is filled with liquid. The movement of the Bourdon tube is transmitted through sector 42 and spindle 45 to a temperature pointer 53 indicating free air temperature. Its movement is also transmitted through lever 25 and link 31 to the lever 21. The transmission to the altitude pointer 9 is thus affected by the temperature element and the setting of the ground temperature by knob 66 in addition to the movement of the capsule. In addition, the ring 7 may be moved through circumferential teeth in mesh with gear 82 in one with a knob 80 so that washer 12 points to a barometer pressure corresponding to the altitude of the field relatively to which the altitude is to be indicated by the pointer 9.
Patent GB-503328-A (GB)
Title: Improvements in and relating to conveyors of the endless band type
IPC: B65G17/06
Filed: 1937-09-29
Abstract: 503,328. Endless - belt conveyers. PATERSON, J. C., and BAKER PERKINS, Ltd. Sept. 9. 1937, No. 26384. [Class 78 (i)] A convey iug device for articles such as biscuits comprises a woven mesh endless band adapted for travel in an arcuate conveying path and connected to flexible elongated driving means such as a chain or chains. In Figs. 1 and 5 the band comprises a series of helically crimped wires 23 tapering from end to end, and loosely interwoven to form an annulus which is folded diametrically and disposed between concentric semicircular frames 2 and 3 to form an upper semicircular conveying run and a lower return run. Chains 11 and 18 attached to the two edges of the band are supported by rails carried by the frames 2, 3. Coiled springs 24 threaded through the mesh of the band resist buckling. At each fold the band passes round a driving shaft 7 having sprockets 17 and 18 of different diameter for driving the chains at appropriate speeds, and intermediate nosing rollers 6 of the same diameter as the inner and smaller sprocket. As the band passes over the nosings it travels at the same speed throughout its width and can therefore be synchronized with straight end-on feeding and receiving conveyers. In the case of a conveyer having a smaller arc than 180‹, the band would be formed as a truncated cone instead of an annulus. The ends of the conveyer in Fig. 1 may be extended into straight runs, at the ends of which it is doubled over nosings, to form a U-shaped sorting or packing conveyer. An L-shaped conveyer would be formed in a similar manner. In Fig. 10 is shown a form of band of particular application to a sorting table having two parallel straight runs joined by semicircular end runs. The interwoven crimped and flattened rods are of equal width throughout their length, and where, as shown, the driving hain 28 is attached to the middle of the rods. lie outer edge of the band is extended and the inner edge contracted when travelling in a curved path. The driving chain may, alternatively, be attached to the band at the inner or outer side in which cases the band would be extended at its outer side or contracted at its inner side only at the curves. The band is attached to pintles 29 of the chain 28 through the intermediary of plates 30, but rods may be threaded through the band and attached to the plates.
Patent GB-1406528-A (GB)
Title: System and method for operating a gas turbine electric power plant with bypass flow fueling operation to provide reliability and extended apparatus life
IPC: F02C9/28
Filed: 1973-06-04
Abstract: 1406528 Gas turbine plant-fuel control WESTINGHOUSE ELECTRIC CORP 4 June 1973 [9 June 1972] 26446/73 Heading F1G An industrial gas turbine plant comprises a compressor, a combustion system and a turbine system, also a fuel system for supplying fuel to the combustion system. The fuel system has at least a liquid fuel sub-system having a source of liquid fuel, a pump for pumping fuel from the source to the combustion system, a throttle valve for regulating the flow of liquid fuel to the combustion system, and a main flow-path between the pump and the throttle valve and between the throttle valve and the combustion system, there being a by-pass flow-path from the main flowpath for limiting or controlling pump discharge pressure, means for mechanically determining a by-pass flow of liquid fuel through the by-pass flow-path and a control system comprising means for operating the liquid fuel sub-system to supply liquid fuel through the main flow-path to the combustion system for turbine start-up and plant loading operations. The fuel system operating means includes means for regulating the pump discharge pressure, the mechanical flow determining means operating substantially independently of the control system to limit the pump discharge pressure during at least part of the turbine operating time after initiation of ignition.
Patent GB-867745-A (GB)
Title: Improved confectionery moulding machine
IPC: A23G3/02
Filed: 1958-08-18
Abstract: 867,745. Confectionary moulding machines. FAERBER, H. A. Aug. 18, 1958 [Aug. 19, 1957; Nov. 6, 1957; Dec. 13, 1957], No. 26474/58. Class 87(2). Aerated starch is delivered from a hopper A to intermittently moving trays (not shown), mounted on slides 1, the starch is levelled off at a station B, (see Figs. 9, 10, not shown), surplus starch falling into a V-section container 23, mould impressions are made in the starch at C, and then the trays are accelerated on to a conveyer 3 travelling at slow speed, and the moulds are filled with confectionery by mechanism D. The filled trays are taken from the conveyer and after setting, the confectionery and starch is tipped into a shoot 44 leading to a rotary wire mesh drum 24. Here the starch is brushed from the confectionery, falls into the container 3 and is returned to the hopper A by conveyers 39, 40 and 41. The confectionery passes through a shoot extension 28 of the drum 24 on to a delivery conveyer 29. The intermittent motion of the trays is effected by cam and link mechanism Fig. 4, (not shown), so arranged as to make gentle initial contact with each tray. The accelerated movement of the trays on to the conveyer 3 is effected by mechanism seen in Fig. 3 (not shown). The drum 24 has supporting rings 25 mounted on " V " rollers 26 on drive shafts 27. One of the shafts 27 drives a cylindrical brush 32 which may be formed with a multi-start helical groove. The position of the brush 32 may be adjusted by a lever 34. The confectionery hopper D is mounted to swing in conformity with the movement of a tray along the conveyer 3 during a depositing operation, and then return to the next tray to be filled, (see Fig. 12 not shown). A metering pump, Fig. 13 (not shown), delivers a predetermined charge from the hopper D.
Patent GB-813572-A (GB)
Title: A device for automatically regulating the supply of pressure fluid to apparatus in which a continuous flow is required
IPC: B62D5/06
Filed: 1955-09-16
Abstract: 813,572. Vehicle power steering. REIS, S. Sept. 16, 1955 [Sept. 17, 1954], No. 26579/55. Class 79(5) [Also in Group XXIX] A valve device for automatically regulating the rate of supply of pressure fluid from a pump to an apparatus to keep the supply thereto substantially constant or at least to prevent excessive variation thereof under varying conditions of pump speed and/or resistance to fluid flow, comprises a valve body 1 having an inlet 3 receiving fluid from the pump, a first outlet 6 connected to the apparatus, e.g. a servo vehicle steering mechanism, and a second outlet 10 for the escape of excess fluid to the suction side of the pump. Communication between the inlet 3 and the outlet 6 is controlled by a first valve member 12 having limited sliding movement between stops 17, 19 in a second valve member 5 which controls communication between the inlet and the outlet 10. Springs 7, 16 abutting either side of the stop 17 load the valve members. At low pump speeds, i.e. low engine and vehicle speeds, the valve member 5 is seated against a body shoulder 8 and the valve member 12 fully open to allow adequate flow of fluid to the apparatus. On increasing pump speed and hence pump output pressure the pressure difference on the two sides of the valve member 12 increases such that the valve member 12 moves against the spring 16 to throttle the flow of fluid to the apparatus. The rate of the spring 16 is chosen to maintain a substantially constant flow rate through the valve member 12. At higher pump speeds, the valve member 12 abuts the stop 17 with the valve member remaining partially open. At still higher pump speeds, i.e. high engine and vehicle speeds, both valve members are moved against the spring 7, the valve member 12 remaining partially open to supply the apparatus and the valve member 5 opening to expel fluid excess of requirements. A spring- loaded relief valve 20 is fitted to relieve excessive presure. The springs 7, 16 are rated so that for every pump speed within the designed range there is a corresponding equilibrium position of the valve members 5 and 12. Specification 783,467 is referred to.
Patent GB-1162942-A (GB)
Title: Improvements in or relating to Thermostats
Inventor: REID KENNETH ERIC
IPC: G05D23/275
Filed: 1967-06-09
Abstract: 1,162,942. Thermal switches. ACCRATEU CONTROLS Ltd. 21 May, 1968 [9 June, 1967], No. 26674/67. Heading H1N. [Also in Division G3] A thermostat includes a switch 17 for controlling the current supply to a heater 1, the switch 17 being subjected in use to the action of a fluid expansion device 5 and to the action of a thermally responsive element 19, both actions tending to actuate the switch so as to cut off the current supply to heater 1, the action of the thermally responsive element 19 being applied to switch 17 through an intermediate lever 32 adjustable in effective length to vary the effect on the switching operation of temperature changes in the thermally responsive element 19. As shown, initially the switch 17 is closed, energizing solenoid coil 4, closing contacts 3, energizing heater 1 to heat up the liquid in tank E. As the liquid heats up the fluid in bulb 2 expands moving bellows 5, moving rod 7, pivoting bimetal compensating lever 8 about pivot 9, pushing down stud 10, pushing down lever 21 pivoted at 9, pushing down stud 11 towards switch 17. Arm 21 also moves the pointer across scale 23. Concurrently with the above, connected in parallel across heater 1 is a heater coil on a bimetal 19 which is heated when heater 1 is energized and which bends bimetal 19 clockwise about pivot 20, moving compensating bimetal 33, moving arm 32 pivoted at 16 towards the lever 21. When switch 17 is opened, the supply is cut off from heater 1 and the heater coil on bimetal 19 and bimetal 19 cools down, moving anticlockwise, separating switch 17 from stud 11, closing switch 17 to start the cycle again. This repeats until the desired temperature is obtained. The desired temperature is set by moving the pointer on setting scale 22 which moves cam 25 and through cam follower 36, arm 15, pivoted at 9, and carrying switch 17, thus setting the position of switch 17. In a modification, bimetal 19 is replaced by a rod or bar of metal having a positive and constant coefficient of thermal expansion. Bimetal 19 may be energized by a separate means such as a time switch or a photo-cell controlling a relay which switches an additional heating current on and off. In place of bimetal 19 may be a liquid filled bellows having an external or internal heater connected in parallel with the main heater. A second bellows or a bimetal may be provided for ambient compensation.
Patent GB-518040-A (GB)
Title: Improvements in and relating to window and like blinds
IPC: E06B9/58
Filed: 1938-09-14
Abstract: 518,040. Window blinds. ROBERTSHAW, W. L. Sept. 14, 1938, No. 26773. [Class 20 (iii)] To prevent passage of light, cords 11 are fitted to the edges of a roller blind 6 and guided in throated tubes 9 in the framing, or in separate attachments 8. The cords, which are secured with the blind to the roller 13 extend through the bottom of the framing where they are guided over pulleys 16, 17. A slat at the bottom of the blind is received in a frame-recess 15.
Patent GB-158343-A (GB)
Title: An improved rope grip or clamp
IPC: F16G11/06
Filed: 1919-10-31
Abstract: 158,343. Maddick, H. Oct. 31, 1919. Coupling.-A rope grip, clamp, or coupling comprises blocks a, b, Figs. 1 and 4, the interfaces c, d of which are inclined as shown. The blocks are grooved at e, f and are connected by two bolts passing through oblong holes. As the bolts are tightened, the portions a, b slide on each other in the direction of the ropes, reducing the cross-sectional area of the recess formed by the grooves between the blocks and thus gripping the ropes. A modification has the sloping interfaces transverse to the ropes. Fig. 7 shows a double-ended coupling, in which the upper blocks a<1>, a<2> slide in opposite directions on a common base b<1>. A double-ended coupling suitable for use on aerial ropeways is shown in Fig. 9. Upper blocks a<3>, a<4> are dovetailed into a common lower block b<2> by means of lugs c<3>, d<3>, Fig. 11. A screw n forces a wedge m between the blocks a<3>, a<4>, driving these outwards and consequently towards the base b<2>, thus gripping the ends of both ropes.
Patent GB-287514-A (GB)
Title: Emulsions from partially oxidized petroleum wax, and process of making the same
IPC: C09K23/00
Filed: 1927-10-10
Abstract: 287,514. Alox Chemical Corporation, (Assignees of Burwell, A. W.). March 23, 1927, [Convention date]. Drawings to Specification. Soaps, materials and compositions for making.- Emulsions suitable for use in sizing paper, dressing fabrics, and proofing permeable materials are made from oxidized petroleum wax, such as scale wax, ozokerite, rod wax, and Sharples wax. The wax is supplied to an oxidizing cylinder having a steam coil and a pipe for admitting compressed air, the oxidation being effected under pressure and at temperatures up to 160 C. preferably at 100-135 C., in the presence of a catalyst such as a manganese copper, or iron compound, manganese oleate being mentioned, or some of the previously oxidized wax, and being carried on until about 30 per cent of the material has been oxidized to acids. The oxidized material is cooled to 100- 90 C. and discharged to a wash tank to remove water-soluble acids, then transferred to a press for removing normally liquid (oily) acids at about 18-22 C., and the press cake is then treated with a solution of caustic soda to neutralize it to the desired extent. The washing or the pressing or both may be dispensed with. The neutralization is preferably effected by running the alkali solution slowly into the molten product with continuous agitation at about 70 C., and the neutralized product may' then be diluted with water. The emulsion may be rendered acid for coating paper by incorporating some of the unneutralized oxidized wax. The emulsions may be mixed with other sizes such as rosin size. In an example the partially oxidized wax (such as Sharples wax) is melted with rosin and treated with an aqueous solution of alkali (caustic or carbonate) to neutralize a substantial amount of the oxidized wax and leave the desired content of free rosin. The mixture is boiled to make a homogeneous soap, which is emulsified by adding water at 60 C.
Patent GB-1178092-A (GB)
Title: Method for Producing Boric Oxide
IPC: C01D5/02
Filed: 1968-06-06
Abstract: 1,178,092. Boric oxide. UNITED STATES BORAX & CHEMICAL CORP. 6 June, 1968 [25 Aug., 1967], No. 26971/68. Addition to 1,133,434. Heading C1A. Solid vitreous boric oxide and sodium sulphate are produced by heating a feed mixture containing finely divided sodium bisulphate and a borate of an alkali or alkaline earth metal at above 800‹ C., preferably 900-1100‹ C., to form a molten, two layered reaction product, the upper layer of which may contain the boric oxide, removing one layer from the other while molten and cooling the separated layer containing boric oxide. The sodium sulphate to metal borate ratio in the mixture may be 2 : 1. Several borates are specified, sodium tetraborate pentahydrate being exemplified. The bisulphate : borate ratio is preferably 2-3 : 1. The molten layers are preferably separated by causing the upper layer of the two to flow over a weir, the upper edge of which is located above the surface of separation between the two layers. The layer of molten boric oxide may be heated after separation to remove any gaseous impurities.