baber/WOPTO huggingface dataset:
Patent GB-1287407-A (GB)
Title: Improvements in or relating to optical systems for colour television cameras
Inventor: PYKE PETER JOHN
IPC: H04N9/097
Filed: 1968-12-05
Abstract: 1287407 Television EMI Ltd 5 Dec 1969 [5 Dec 1968] 57720/68 Heading H4F In a colour television camera comprising an optical system, e.g. as shown in Specification 1,149,522, wherein a beam splitter divides incoming light into a reflected portion, and a transmitted portion which subsequently is analysed into component colour images for colour pick-up tubes, the reflected light is transmitted towards an epidioscope instead of the normal luminance tube and the beam splitter is reduced in reflectance to about 5%, so that when a mirror is disposed before and facing the optical system, and the epidiascope is operated, e.g. in conjunction with a test chart light therefrom passes back along the system, and is reflected by the mirror, and passed by the beam splitter to the colour pick-up tubes. The mirror may be mounted in a turret together with an optical filler, rotation of the turret causing a switch to operate the epidiascope.
Patent GB-1287568-A (GB)
Title: Burner for gaseous fuel
Inventor: BAGGE LEONARD PERCY
IPC: F23D14/00
Filed: 1968-12-05
Abstract: 1287568 Gas burners SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 4 Dec 1969 [5 Dec 1968] 57858/68 Heading F4T A gas burner comprises an outer annular body part 1 and an inner barrel part 2 both receiving a coolant and between the parts 1 and 2 there is positioned a partition wall 5 to form annular channels 3, 4 for the supply of oxidant and gaseous fuel respectively, the partition wall 5 being inset from the body part 1 and the barrel part 2 at its downstream end and having its crosssection increased thereat to form a bluff body 6 with a flat end face 7. The fuel and oxidant from channels 4, 3 discharge into a common duct 9 downstream of the bluff body 6 which acts to assist mixing of the fuel and oxidant and to achieve pre-stabilization of the flame in a flame chamber 13 (see Fig. 3) whose upstream end is constituted by the end faces of parts 1 and 2 and the lateral wall 14, which is movable to adjust the length of the flame chamber 13 has coolant circulated therein. In the burner of Fig. 1 which gives an elongated flame the channels 3, 4 are of uniform cross-section throughout their whole length but in the embodiment of Fig. 2 which gives "umbrella"-type flames, the channels 3, 4 are reduced in cross-section at their discharge end and the bluff body 6 is formed as a conical ring restricting the oxidant channel 3. The conical space of the barrel part 2 may have baffles to ensure proper circulation of coolant. The burner of Fig. 2 is said to reduce noise and prevent flame lift-off.
Patent GB-584540-A (GB)
Abstract: 584,540. Fluid-actuated valves. BENTON & STONE, Ltd., and MILNER, C. E. Nov. 6, 1944, No. 21726. [Class 135] A valve for supplying air or gas in a succession of puffs, particularly for removing the swarf from the tool of a drilling, milling or like machine, comprises a valve member f controlling the inlet of the fluid at b to an outlet at c. The valve is loaded by a spring g to closed position and opened by pressure of the fluid on the underside of a diaphragm i from a passage k in communication with the inlet side of the valve. An adjustable throttle s is provided in the inlet passage b and an adjustable restricted orifice m is provided in the passage k. In operation, on admitting air or other gas to the inlet b, pressure builds up below the diaphragm i which then lifts the valve f against the spring g to pass the air to the outlet c. This results in a fall in pressure in the passage k and the pressure below the diaphragm leaks away through the orifice m until it is insufficient to maintain the valve f open. The valve then closes and the operation is repeated by the pressure building up below the diaphragm again. The frequency of the puffs can be varied. by adjustment, of the orifice m while the volume discharged at each puff is varied by adjustment of the throttle s.
Patent GB-1427933-A (GB)
Title: Developer powder for the development of electrostatic images
IPC: G03G9/087
Filed: 1972-12-19
Abstract: 1427933 Developer composition OCE-VAN DER GRINTEN NV 18 Dec 1973 [19 Dec 1972] 58611/72 Heading G2H [Also in Division C3] Electrostatic image developer powders comprise coloured thermoplastic resin particles, the resin constituent of which consists of at least 50 wt per cent of a copolymer of at least 50 wt per cent of styrene with indene or an alkyl indene and optionally acrylonitrile, optionally in admixture with carrier granules, e.g. of sand, glass, quartz, metal oxides or iron. The particles may be electroscopic and may contain polarity control agents, e.g. organic dyestuffs and 2 (#-styryl) quinolinium salts of organic and inorganic acids, or the particles may be conductive, carrying on their surfaces 5 to 15 wt per cent of conductive carbon black and optionally incorporating iron or ferrite particles. Examples describe electroscopic developers comprising carbon black together with (1 and 5) styrene/indene/acrylonitrile copolymer and nigrosine, (2) styrene/indene/acrylonitrile copolymer and Crystal Violet stearate, (3) styrene/indene/ acrylonitrile copolymer and (4) styrene/indene copolymer and nigrosine, 1,2, 4 and 5 being mixed with iron granules and 3 with glass granules; and (6) a conductive developer comprising styrene/ indene/acrylonitrile copolymer particles coated with conductive carbon black.
Patent GB-1206889-A (GB)
Title: Copying camera with binocular microphotometric control and focusing
Inventor: VERGE JEAN CHARLES
IPC: G03B19/12
Filed: 1968-12-10
Abstract: 1,206,889. Copying cameras. INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE. Dec.10, 1968 [Dec.19, 1967], No.58655/68. Heading G2A.  A copying camera comprises a polygonal casing in which a mirror is rotatably mounted, and which can reflect the image on to a photo-metric screen or on to one of two light-sensitive sheets of different sizes. In Fig. 1 the casing 1 is of square section, and is attached via a plate 8 and bellows 9 to a microscope (not shown). Within the casing 1 is mounted a rotatable cylinder 6 carrying a semi-transparent mirror 2 inclined at 45‹ to the optical axis. In one face 13 of the casing is a lens 14 of large diameter, allowing of binocular observation through an eyeshield 24. In the opposite face 12 is mounted a photo-metric unit, which consists of a matt white projection screen 3, used for focusing purposes. On the screen is mounted a revolving disc 15 having a number of apertures 16 of different sizes. Behind the screen is a photocell 23, and the light received is indicated by a galvanometer needle 19. Fig. 2 shows how light passing in from bellows 9 is reflected from the inclined mirror 2 to the screen 3, and then back through the mirror to the observer viewing through the lens 14. When the conditions are suitably adjusted, the mirror is rotated so as to reflect the image on to either a photographic sheet 4 or a smaller sheet 5. In the modification of Fig. 4 (not shown) and Fig. 5, the casing has a hexagonal section, each face having a port therein. One pair of ports opens on one face to the observation lens 14 and on the opposite face to the focusing screen 43 and photometric unit 22, 23. A second pair of ports opens on one face to the bellows 9 connecting to the microscope, and on the opposite face to the galvanometer unit 18 (in this form separated from the photo-metric unit). The third pair of ports opens to the two photographic sheets 45, 46 respectively. The mirror 2 is not inclined as previously, but is now mounted so as to rotate about the axis of symmetry of the casing. In Fig. 4 (not shown) the mirror is set in the focusing and measuring position. In.Fig. 5 it is set so as to take a photograph on sheet 45.  The apparatus can be mounted on a support for vertical movement Figs..6, 7, (not shown) so that movement of the housing and of the lower end of the bellows can be controlled independently by separate electric motors. (For Figures see next page)
Patent GB-1190140-A (GB)
Title: Position Detecting Device
Inventor: CHAPPERON PIERRE LOUIS JEAN
IPC: B65D79/02
Filed: 1968-12-12
Abstract: 1,190,140. Levels. P.L.J. CHAPPERON. Dec. 12, 1968 [Dec. 13, 1967; Sept. 5, 1968], No. 59123/68. Heading G1F. A device for detecting whether an article has been excessively inclined or turned over during transportation comprises a bottom casing 1 secured to the article with the casing in a horizontal position the casing 1 containing four segmental cavities 2, (only one shown) disposed symmetrically round the bottom casing 1, a horizontal mask 4 placed over the casing 1 and having four projections 5 each with a vertical aperture 6, and a transparent lid 8 which with the mask forms four separate compartments 9 (only one shown), the cavities 2 containing particles or pellets 3, which, when the device is in use with the apertures 6 in register with the cavities 2, will pass through one or more of the apertures 6 to become visible through the lid 8, when the device has been tilted sufficiently from the horizontal. A slot 15 in the lid allows the lid 8 and mask 4 to be rotated to bring the cavities 2 and apertures 6 into register when the device is to be used and co-operating lugs 10 and notches 11 act in the way of a pawl and ratchet mechanism to prevent reverse rotation of the lid 8 once it has been set for use. By provision of the four cavities 9 it is possible to see in which direction the article has been tilted. The casing and mask are preferably made from coloured polypropylene and the lid from transparent polystyrene. The pellets are preferably in the form of lead shot which may be luminescent, and the mask 4 may be luminescent if desired.
Patent GB-1169290-A (GB)
Title: Improved process for preparing Polysiloxane-Polyoxyalkylene Copolymers
Inventor: DELAVAL JEAN CLAUDE AUGUST
IPC: C08G77/46
Filed: 1967-12-29
Abstract: 1,169,290. Siloxane-oxyalkylene copolymers. RHONE-POULENCE S.A. 29 Dec., 1967 [30 Dec., 1966], No. 59225/67. Heading C3T. In making polysiloxane-polyoxyalkylene copolymers, a ruthenium carbonyl or 1,3-ketoenolate is used as catalyst for the addition of an alkenyl - polyalkylene - glycolether to Sibonded H of a polysiloxane. Some of the Sibonded H atoms may previously have been reacted with hydroxy-terminated polyalkylene glycol monoether. In examples ruthenium 1:1:1-trifluoroacetylacetonate, trirutheniumdodecacarbonyl or ruthenium acetylacetonate is used to catalyse reaction of α,#-bis-(dihydromethyl silyl) polydimethylsiloxane with the monoallyl ether of polyethylene polyisopropylene glycol or the formate, acetate or monobutyl ether thereof, optionally after partial reaction of the Si-H groups with a monobutyl ether of polyethylene polyisopropylene glycol.
Patent GB-1408650-A (GB)
Title: Pressure vessel for a nuclear reactor
IPC: G21C13/06
Filed: 1972-12-21
Abstract: 1408650 Reactor pressure vessels SIEMENS AG 21 Dec 1972 [23 Dec 1971] 59260/72 Heading G6C A nuclear reactor pressure vessel, e.g. for a pressurized-water reactor, comprises an inner, steel container 1 constituted by a number of axially arranged sections 4-7 each of which is capable of withstanding pressures in the radial sense and a base closure 8, and an outer, concrete container 2 to part of which axial forces are transmitted from the container 1 to render the latter capable of withstanding pressures in the axial sense. As shown, the inner container has a convex top closure 10 from which the axial forces are transmitted, via hydraulically expansible props 16, to an annular shoulder 17 of the outer container. The latter, which has axial and radial reinforcement 14 and 12, 13 respectively, does not accept radial forces due to the existence of a gap 19 between it and the inner container. A water- or air-cooled intermediate concrete layer 20 is provided. Each of the sections 4-7 and base closure 8 may be of wound or multi-layer construction (Fig. 2, not shown), and the base closure 8, which rests on a layer 18 of graphite or graphitised porcelain to facilitate differential thermal expansion between the containers, is penetrated by coolant conduits 9.
Patent GB-1387149-A (GB)
Title: Dental chairs
IPC: A61G15/02
Filed: 1972-12-22
Abstract: 1387149 Adjustable dental chairs KA VO ITALIA SpA 22 Dec 1972 [28 Dec 1971] 59356/72 Heading A4J [Also in Division B8] A dental chair comprises a base I hingedly supporting a seat 2 with power operated hydraulic means (not shown) for inclining the seat 2 with respect to the base 1. A back 3 is hinged to the seat 2 and may be inclined thereto by further power operated hydraulic means (not shown). A control panel 5 is attached to the uppermost part of the base 1 and has two control knobs 11, 37. The required angular adjustment of the back 3 to the seat 2 is pre-set by rotation of the knob 37 an indication of this setting being given by corresponding movement of a pointer 31 with respect to a pointer 22. The required angular adjustment of the seat 2 with respect to the base 1 is pre-set by rotation of the knob 11, both the pointers 31, 22 being rotated as a result of this action and giving a visual simulation of the final adjusted position of the chair when a programmer (not shown), wired to two multi-contact switches (12), (38), Fig.3 (not shown), set by the knobs 11, 37, is actuated. In a modification of the control panel, Figs. 4 to 6 (not shown), two multi-contact switches (45), (49) are set by rotation of a control knob (54) about the longitudinal axis of its mounting shaft (52) and by movement of the knob (54) sideways.
Patent GB-1237678-A (GB)
Title: Valve for controlling the rate of flow of fluid
Inventor: THOMPSON SIDNEY
IPC: F16K7/04
Filed: 1969-12-09
Abstract: 1,237,678. Valves. S. THOMPSON. 9 Dec., 1969, No. 60022/69. Heading F2V. [Also in Divisions G2-G3] Rubber block 18 has its flanged end 19 seated in a pipe feeding an irrigation system, and its upper end 22 and conical wall 21 subjected to up stream pressure so that the down stream pressure is maintained substantially constant due to changes in the diameter of bore 23.
Patent GB-629847-A (GB)
Abstract: 629,847. Rotary pumps. HOBOURNEATON MANUFACTURING CO., Ltd., Nov. 26, 1947, No. 31351. Convention date, March 27, 1946. [Class 110(ii)] A dual pump assembly comprises an open-ended casing 10 containing two pumps mounted in the bore 12 with a floating separator plate 22 between them. The figure shows two pumps of the n and n+1 lobe type having gears 30, 32, on a shaft 16, which mesh with outer ring rotors 40, 42. One pump may be used for lubricant and the other as a scavenge pump for an engine. One may operate at higher pressure than the other and cause the spacer plate to be pressed sideways.
Patent GB-739230-A (GB)
Abstract: 739,230. Thermal switches. GENERAL ELECTRIC CO. Dec. 17, 1953 [Dec. 17, 1952], No. 35198/53. Class 38 (5). The switch comprises a bowed spring 7 carrying (or connected to) the moving contact 11 and secured to one end of a bimetal element 8 so as to be moved from one bowed position to an opposite bowed position to open and close the contacts with a snap action. The element 8 is mounted at 4 on a frame 3, to the other end 5 of which the spring 7 is secured. The fixed contact 12 is carried by a spring 13 which, with a stop 17, is insulatingly carried by the frame. The contact 12 follows the opening movement of contact 11 until the dead-centre position, thereby maintaining contact pressure and giving a wiping, cleaning action.
Patent GB-2001808-A (GB)
Title: Generating an a.c. voltage of constant frequency from a rotating shaft.
IPC: H02M7/48
Filed: 1978-07-20
Abstract: An a.c. voltage Vo of constant frequency Fo equal to 400 Hz and of constant amplitude vo is generated at the terminals of a load 1 from a shaft 2 rotating at variable speed. An alternator 4 is used of frequency F1 between 1000 and 3000 Hz, the field 3 of which is driven by shaft 2 and is excited by a d.c. voltage linked to vo and the six-phase armature stator 5 contains star-connected windings each having tappings (a1, a2, a3; b1 ... f3). These tappings are connected to a filter 6 which feeds the load through rectifiers (R1+... R3-) and switches (A1+ ... A3-) successively, the successive closings of which are controlled in accordance with a cycle of frequency Fo. Preferred application of the invention is supplying on-board equipment on an aircraft from the shaft of an engine powering said aircraft. <IMAGE>
Patent GB-2021393-A (GB)
Title: Holders for foodstuff being cut
IPC: B26D3/24
Filed: 1978-09-06
Abstract: This invention relates to holders for fruit, vegetables or similar foodstuffs which are to be reduced in size on a household utensil of the kind having a working plate and lateral guide ribs which project above the surface of the working plate, the holder being arranged for holding in the hand the foodstuff to be reduced in size, the holder being hollowed out in a concave shape and having a bearer flange 4 extending outwards from the opening in the body by means of which the holder can be set down in the guide ribs at any point on the utensil and can be moved to and fro on the guide ribs in the longitudinal direction of the working plate, the holder being swivellable on the guide ribs in the plane of the to and fro movement. According to the invention, the front edge 5 of the bearer flange 4 which, when the holder is set down on the household utensil, extends from one guide rib to the other and which at the beginning of the working movement faces towards the cutters, is straight or rounded with a slight concavity towards the body. <IMAGE>
Patent GB-2004303-A (GB)
Title: Oxygen-resistant electroconductive carbon anodes
IPC: C25C3/12
Filed: 1978-09-14
Abstract: Improving the resistance to oxidation of an electroconductive body, including a carbon base (1) e.g. of graphite defining a surface having pores and carrying an adherent discontinuous surface coating (3) of a refractory oxide e.g. of alumina, chromic oxide or silica, by: immersing the body at least partially into a refractory metal salt melt, e.g. of cryolite or alkaline earth metal and aluminium chloride, having a boiling point in excess of 400 DEG C; electrodepositing said melt onto said body thereby closing practically all of those pores and discontinuities (2a- 2c,4a-4d, 5a, 5b) submerged in said melt; and removing said body from said melt before said refractory oxide has completely disintegrated or dissolved; to give a final oxidation agent- resistant coating which is keyed onto the surface of the carbon base. <IMAGE>
Patent GB-2032581-A (GB)
Title: Combined pressure reducer and flow control valve
IPC: F15B13/02
Filed: 1978-10-24
Abstract: The valve which includes a valve body 11 and cover means 12 has an upstream port 26 and a downstream port 20 and two parallel fluid flow passages 45, 23 interconnecting said ports. An adjustable differential pressure valve means 47 is operatively mounted in a first one of said two parallel fluid flow passages for reducing the upstream pressure of fluid entering the upstream port to provide a reduced downstream pressure at the downstream pressure port. A check valve means 39 is operatively mounted in the second one of said two parallel fluid flow passages and it is operative to check the flow of fluid through said second one of said two parallel fluid flow passages when fluid is flowing through said first one of said two parallel fluid flow passages, and to allow flow of fluid through said second one of said two parallel fluid flow passages when fluid is exhausted into said downstream port and out the upstream pressure port. An adjustable fluid flow control valve means 27 is operatively mounted in either one of said two parallel fluid flow passages to provide a meter in or a meter out action to the flow of fluid through the passage in which the adjustable fluid flow control valve means is mounted. <IMAGE>
Patent GB-2016974-A (GB)
Title: Secondary cooling of a continuously cast strand
IPC: B22D11/124
Filed: 1979-01-30
Abstract: In the secondary cooling zone of a continuous casting installation the shape of the cross-section of the cast strand, especially of a rectangular strand, is influenced by cooling the corners of the cast strand at their edge regions. Deviations of the shape of the strand 12 from a reference cross- section are determined, e.g. by electrical measurement and comparison of the diagonals, and the spray cooling of the strand by means of nozzles 7, 8, 9, 10 is controlled in accordance with the determined deviations in a manner such that oppositely situated corners of the strand which enclose an obtuse angle (7, 10) are more intensely cooled than the oppositely situated corners of the strand which enclose an acute angle (8, 9) to improve the shape. <IMAGE>
Patent GB-2016732-A (GB)
Title: Zoom Lens System
IPC: G02B7/10
Filed: 1979-02-13
Abstract: In a driving device including a zoom lens holder 10 movable back and forth along the optical axis of the lens system, a cylindrical cam 20 mounted on the lens holder for varying a lens distance in the lens system, a guide bar 30 extending at an angle with respect to the optical axis and a connecting pin 80 fixed to the cylindrical cam and slidably engaged with the guide bar for moving a part of the lens system while moving the whole lens system, adjusting devices are provided for changing the angle and position of the guide bar to compensate for manufacturing errors which would otherwise result in displacement of the focal plane in the zooming operation. The adjusting devices comprise lamps 71 and 72 which are fixed at the ends of guide member 30, have slots 73 and 74, and are movably clamped by screws 90 and 91 to supports 41 and 42. <IMAGE>
Patent GB-2019858-A (GB)
Title: Smoke suppressed rigid polyurethane foam
IPC: C08G18/00
Filed: 1979-03-05
Abstract: Smoke suppressed rigid polyurethane foams are prepared from a reaction mixture comprising as the smoke suppressant additive a metal salt of a: dialkyl dithiocarbamate, a mercaptobenzothiazole, a 2,5- dimercapto-1,3,4-thiadiazole, a trimercaptotriazine, a hydroxy thiophenol, an aliphatic dimercapto compound of 2 to 10 carbons, a 2- mercapto benzoxazole or a 2- mercapto benzimidazole. The metal is selected from copper, zinc, aluminium, tin, antimony, bismuth, vanadium, chromium, molybdenum, manganese, iron, cobalt and nickel.
Patent GB-2018517-A (GB)
Title: Tap selector for a tapped transformer
IPC: H01F29/02
Filed: 1979-04-05
Abstract: A tap selector comprises insulating cylindrically spaced members provided with sequentially actuable tap contacts in axially spaced planes (U1, U2, V1, V2, W1, W2). The sequential contacts for each phase are in alternate planes of an adjacent pair (U1+U2 etc.). The spacing in one plane between the last contact and the penultimate but one contact and between the last contact and the second contact are greater than the spacings between other adjacent contacts. The member supporting the first contact and the member supporting the penultimate contact are disposed at the opposite side of the circle to the member supporting the last contact. An insulating member 52 providing the support for the insulating members and situated in a plane V2 of even-numbered contacts axially innermost contacts extends between the member supporting the first contact and the member supporting the penultimate contact, and an insulating support member 51 in an innermost odd-numbered contact plane V1 extends between the member supporting the last contact and the member supporting the penultimate but one contact. Thus partially annular members 51, 52 support the circumferally spaced insulating members. <IMAGE>