baber/WOPTO huggingface dataset:
Patent GB-1231839-A (GB)
IPC: A62C3/06
Filed: 1968-11-28
Abstract: 1,231,839. Minimising fires in fuel tanks. NORMALAIR - GARRETT Ltd. 28 Nov., 1968, No. 56453/68. Heading A5A. [Also in Division G3] Fire prevention means supplying an inert gas to a storage enclosure dispensing combustible material, e.g. an aircraft fuel tank, comprises a liquid-to-gas converter system supplying gas to the enclosure by way of a flow regulating valve means which includes a variable volume chamber, variation of the volume effecting the regulation of gas flow to the enclosure, and at least one pressure relief valve in communication with said enclosure and said regulating valve means. Liquid N 2  gas converter 10 is connected via heat transfer coil 13 in fuel tank 14 and pipe 11 to flow-regulating valve 12. N 2  delivery pipe 15 leading from 12 to tank 14 is joined beyond non-return valve 17 by ground filling pipe 16. Relief pipe 18 communicates space 19 above the fuel with pressure relief valve 20 associated with aneroid or evacuated capsule 21 sensitive to ambient atmospheric pressure, and, via line 22, with servo valve chamber 23 of valve 12. Valve 12 comprises servo chamber 23 and main valve chamber 33/34 divided by wall 25 having a port with valve seat 26 obturated by lever valve 27 which is actuated by diaphragm 28 separating the servo portion into spring chamber 29 and servo valve chamber 23. Normally 27 is urged open by the pressure on 28 of spring 30 mounted on evacuated capsule 31; chamber 29 is in communication with ambient atmospheric pressure. Valve seat 35 on the end of pipe 11 cooperates with pad valve 36 attached to diaphragm 32 separating control pressure chamber 33 from delivery chamber 34 in the main valve portion. Small tube 37 with orifice 38 connects pipe 11 with chamber 33. In use N 2  is delivered via valve 35/36 to 34 and via tube 37 to 33, fully gasifying on passage through 13, and fills space 19, pipe 18, pipe 22 and chamber 23. This communication allows the pressure in 33 to be overcome by that exerted on valve pad 36, which then deflects diaphragm 32 to discharge N 2  via pipe 15 into the fuel to a predetermined pressure. Such pressure is sensed by diaphragm 28, which returns to a null position, closing 27 on seat 26. Thereon pressure in 33 and 34 equalises and 32 closes pad 36 on to seat 35. Reducing pressure over the fuel initiates further N 2  delivery in accordance with the fuel usage. To maintain the predetermined presure in 14, in the event of low ambient atmospheric pressure on 20, capsule 21 expands and seals 20. Similarly capsule 31 compensates pressure loss on diaphragm 28.
Patent GB-1233721-A (GB)
IPC: H01J1/32
Filed: 1968-05-10
Abstract: 1,233,721. Cathode materials and processing; semi-conductor devices. RCA CORPORATION. 10 May, 1968, No. 22265/68. Headings H1D and H1K. An electron emitter comprises a body 12 of P-type semi-conductor material having spaced valence and conduction energy bands and a Fermi level spaced below the bottom of the conduction band by a given energy differential, with a thin layer 13 of an electropositive work function reducing material forming the emissive surface, the work function of this material with respect to the Fermi level being less than the given energy differential such that electrons in the conduction band may diffuse toward layer 13 with sufficient residual energy that they are emitted therefrom, and means for bombarding the body 12 with primary electrons to produce secondary electrons in the conduction band of the body. The semi-conductor material may be GaAs, GaP or GaAs-GaP alloy, and the dopant, for example for a GaAs body, may be Be, Cd or Zn and the electropositive material may be K, Ba or, preferably, Cs. The semi-conductor body may be degeneratively doped and have a hole concentration of 10<SP>18</SP> to 10<SP>20</SP>/cm.<SP>3</SP> The electropositive layer 13 preferably has a thickness not exceeding a few atomic diameters of the material. In manufacture a degeneratively doped (e.g. with Zn) P-type GaAs wafer is cleaned by vapour etching using water vapour in a hydrogen carrier gas at an elevated temperature and then baking in a vacuum. Caesium is evaporated on to this clean surface to an optimum thickness determined by monitoring photo-electrons.
Patent GB-1250347-A (GB)
IPC: H02H7/16
Filed: 1968-12-23
Abstract: 1,250,347. Protective systems. ALLMANNA SVENSKA ELEKTRISKA A.B. 23 Dec., 1968 [29 Dec., 1967], No. 60983/68. Heading H2K. An arrangement for protecting a series capacitor 2 comprises two spark gaps 5, 6, each in series with its own or a common switch device and connected in parallel with the capacitor, a control device 4 being responsive to the current through a spark gap to cause operation of a further switching device to short-circuit the capacitor 2 when the voltage across it becomes excessive. In the arrangement shown an overvoltage across the capacitor 2 causes a gap 5 or 6 to ignite and the resulting current through the gap causes a current transformer 9 or 10 to energize the device 4 which closes a shortcircuiting switch 3 and opens a switch 7 or 8 in circuit with the gap 5 or 6 which ignited. When the fault condition ceases, the reduction in the current through a current transformer 11, connected in series with the switch 3, causes the device 4 to open the switch 3 and after a delay to reclose the switch 7 or 8. A single current transformer may be connected in series with the spark gaps, Fig. 2 (not shown) and a changeover switch may be used instead of the switches 7, 8, Fig. 3 (not shown).
Patent GB-1251053-A (GB)
IPC: G03B21/00
Filed: 1968-10-09
Abstract: 1,251,053. Optical apparatus; multiphotographic devices. RICOH K. K. Oct. 9, 1968 [Oct. 20, 1967], No.47826/68. Headings G2A and G2J. In an arrangement in which a lens 1, Fig. 1, produces an image A of an object which is imaged by a series of lenses 2 on to a photographic film 4, there being an aperture 3 movable in a plane perpendicularly to the optical axis O so that in any one position of the aperture 3 the resultant image is in the form of elements Aa 11 , Aa 12 , Aa 21  &c. Fig.2 and in another position of aperture 3 the image takes the form of elements Ba 11 , Ba 12 , Ba 21  and so on, the elements Aa 11  Aa 12 Aa 21  &c. and Ba 11  Ba 12  Ba 21  &c. may be projected according to the position of aperture 3 to form images corresponding to A 1  B 1  &c. by a light placed to the right of film 4, and to boost the illumination for projection a multi lens 22, Fig. 6, similar to multi lens 2 and 12 is placed between light source 15 and film 4. To increase the overall efficiency two condenser lenses 16 and 26 may be placed as shown; condenser lens 26 being displaced laterally so that light from source 16 impinges upon the required image. The source 15 is asymmetrically placed in respect of the aperture 13 with respect to the centre C. In a further embodiment, the thickness of multi lens 22 is reduced relative to multi lens 12, so that light rays are focused after passing through the image plane. In this embodiment both the light source and the multi lens adjacent to it are moved whenever another image to be projected is selected. The effective light source can be displaced with respect to the aperture by having light reflected off a mirror on to a multi lens element. The mirror may be vertically and horizontally rotatable, Fig. 9 (not shown), by means of pulleys and shafts attached to the frame of the mirror.
Patent GB-1256549-A (GB)
IPC: F16J15/34
Filed: 1969-12-01
Abstract: 1,256,549. Rotary shaft seals. O. A. OLSEN. 1 Dec., 1969, No. 58608/69. Heading F2B. Sealing means for a ship's propeller shaft 11 or other rotary shaft comprises two relatively rotatable and axially movable sealing rings 16, 27, one, 27, of the rings being carried by a flexible diaphragm 23, 24 and having in its end. face 27a facing the ring 16 an annular packing element 30 and magnetic means, e.g. a ring of permanent magnets 32, which latter sealingly, urges the element 30 against the ring 16 and is disposed radially inwards of the element. The ring 16 is of magnetizable material and is secured to a sleeve hub 14 to rotate with the shaft 11. The ring 27 is sealingly secured to the ship's hull by two rubber discs 23, 24.
Patent GB-1257041-A (GB)
IPC: F28F13/06
Filed: 1968-03-27
Abstract: 1,257,041. Heat exchange elements. ROLLSROYCE Ltd. 23 June, 1969 [27 March, 1968], No. 14662/68. Heading F4S. [Also in Division F1] In a hollow turbine blade 20 cooled by air and comprising opposite side walls 10, 11 of aerofoil section between which extend islands 12 having tapered end portions, the islands are shaped and arranged to define therebetween converging and diverging flow passages 15 of uniform cross-section for the cooling air which enters the blade through an opening 22 in the root portion 21. The cross-sectional shape of the islands may be diamond, as shown, flattened hexagonal (Fig. 3), or it may be basically circular with opposed tapered extensions (Fig. 4). . In an alternative embodiment (Figs. 7, 8, not shown) the blade is provided with two sets of cooling air passages (15) separated from each other by a central blade region (31). Each set extends parallel and close to a respective one of the exterior side wall surfaces.
Patent GB-1257359-A (GB)
IPC: G02B6/06
Filed: 1969-05-09
Abstract: 1,257,359. Optical fibres. BARR & STROUD Ltd. Feb.27, 1970 [May 9, 1969], No.23694/69. Heading G2J. A fibre-optic element has a wide-angle field of view provided by a spherical or partspherical lens 13 mounted on a bundle 10 of fibres 11 the field of view being limited only by the numerical aperture of the fibres. The lens can be fused, or bonded with a substance such as cellulose caprate, to the fibres 11. The elements distortion is illustrated by the barrel-shaped image, Fig.4 (not shown), of a square plate which has mutually perpendicular lines (20). The image has the same definition at the edges as at the centre. To reduce the stray light from the end of the bundle 10 farthest from the lens 13 a diaphragm may be used. The element may be used to view with correct object/image area relationship, the interior of a spherical cavity. The fibres 11 may each be surrounded by material to provide extra-mural absorption.
Patent GB-1257621-A (GB)
IPC: B32B27/00
Filed: 1967-09-15
Abstract: 1,257,621. Laminates. M. A. E. RHIANDO. 16 Dec., 1968 [15 Sept., 1967 (2); 21 June, 1968], Nos. 42192/67, 42193/67 and 29670/68. Heading B5N. [Also in Division B2] A laminated plastics panel is produced by bonding a particulate, fibrous or stranded reinforcing material to at least a part of one side of a layer of thermoplastics material, applying to the layer of reinforcing material a composition containing a thermosetting plastics material and curing or allowing the composition to cure whereby at least a mechanical bond is formed between the thermoplastic layer and the so applied layer of thermosetting material through the agency of the reinforcing material. In one embodiment one face of the layer of thermoplastics material is treated with an etching solvent to assist bonding of the reinforcing material. The reinforcing material may be bonded to the layer of thermoplastics material using a thermosetting resin adhesive. The thermoplastic may be vinyl chloride polymers and copolymers, polyethylene, polypropylene, acrylonitrile-butadiene-styrene copolymers, methylmethacrylate polymers and copolymers, polystyrene, polyethylene terephthalate, methylpentine polymers, fluorocarbon polymers, polycarbonates, nylons, acetal copolymers, phenoxy resins, acrylics, cellulose nitrate and acetate and may contain UV stabilizers, anti-static agents, pigments and may be metallized. The thermosetting plastics may be epoxy, phenolic and amino resins, an orthophthalic or isophthalic unsaturated polyester resin. The reinforcing material may comprise calcium silicate, sand, steel, hessian, jute, asbestos, aluminium, carbon, glass. The reinforcing material may be bonded using as a binder the same thermoplastics material as the thermoplastics layer. Plywood, asbestos, chipboard, plasterboard and compressed straw, or any foam material with an additional layer of resin saturated reinforcement on top of the foam can be placed on top of the laminate prior to curing and subsequently bonded to the laminate.
Patent GB-1259090-A (GB)
IPC: F16D57/06
Filed: 1970-03-24
Abstract: 1,259,090. Hydrostatic braking. ALFRED TEVES G.m.b.H. 24 March, 1970 [29 March, 1969], No. 14218/70. Heading F2E. [Also in Division F1] A device for braking a rotatable shaft 12 of an automotive vehicle comprises a housing 1, 2 filled with pressure medium and containing a swash plate 7, 8, 9 of which the inner member 9 is co-rotatable with the shaft 12 and the outer member 7 is non-rotatably mounted on a bearing 8, the housing 1, 2 also containing a cylinder block 3 with cylinders 4 containing working pistons 5 urged against the member 7 by springs 6, the cylinders 4 having relief pressure valves comprising outlet openings 28 operable by a valve disc 29, and said openings 28 being thereby connectable with a chamber 42 enclosed by the housing 1, 2 and connected to a heat exchanger by bores 39, 40: upon brake actuation the angle of the swash plate 7, 8, 9 relative to the shaft 12 is varied by means of a piston 21 (connected by a channel 22 and screw plug 23 to the hydraulic brake line of the vehicle) and a ring 16, cam 17 and the member 7 have the pistons 5 to pump pressure fluid through the pressure relief valves, the rotational energy of the shaft 12 thereby being converted to heat energy which is dissipated in the heat exchanger. The pressure fluid passes into cylinders 4 via openings 27 provided with spring biased valve rings 30. The ring 16 may alternatively be displaced by a ring cylinder or a single cylinder; and the ring 16 may also be moved by a coaxially arranged screw socket with coarse thread of a mechanical rod system. The working cylinders 4 may be connected via an outlet check valve to a common line whose pressure is controlled by a single relief pressure valve.
Patent GB-1259097-A (GB)
IPC: B41F31/30
Filed: 1968-02-28
Abstract: 1,259,097. Printing apparatus. LINOTYPE & MACHINERY Ltd. 27 May, 1969 [28 Feb., 1968], No. 9580/68. Heading B6C. An inking or dampening forme roller carried by two supports 2 is moved between a position in which it is in contact with a plate cylinder and one in which it does not obstruct access to the plate cylinder by gearing which causes the supports 2 to move on pivots. Each support 2 carries a gear segment 4, which is engaged by a gear 5, driven by a rotatable handle through worm and bevel gears and a shaft 6 common to both gears 5. Springs mounted on the shaft 6 force the forme roller against the plate cylinder, but allow it to move resiliently away from the plate cylinder in the event of, for example, a web wrap-around. Camshaft 15 and its follower 17 make possible movement of the forme roller into and out of contact with the plate cylinder by a small movement of the supports 2. The supports 2 may be mounted pivotally on the journals of another roller of the train of which the forme roller is part.
Patent GB-1264183-A (GB)
IPC: A61B6/00
Filed: 1969-09-03
Abstract: 1,264,183. X-ray apparatus. WESTING- HOUSE ELECTRIC CORP. 3 Sept., .19.69 [26 Sept., 1968], No. 43652/69. Heading H5R. [Also in Division G2] A mirror device, in or for X-ray apparatus has two partial mirrors 60, 62, Fig. 3, located in a rectangular housing 26 having aligned openings 37, 42 and 46, 48 on oppositely facing walls, each mirror being separately actuable to a differently inclined position between the openings. The opening 37 receives an objective 40 of an image intensifier system from which an image is transmitted or reflected to other openings holding film camera lens barrels 50, 52 or an objective of a television camera 44. Actuation of each 45 degree inclined mirror 60, 62 between an operative and retracted position occurs through respective solenoids 72, 74, Fig. 2, which are energized to retract armatures 84, 86 carrying links 120, 122 to rotate mirror supports 64, 66 against stops 88, 90 and microswitches 92, 96. Operation of the latter introduces current reducing resistors into the energizing circuit which reduce the solenoid current to a holding value such that on de-energization of the solenoids, springs 76, 78 restore the mirrors to their respective retracted positions. Microswitches 94, 98 are also provided to prevent energization of the solenoid until the other mirror is retracted. When used in a diagnostic X-ray machine, the detector means, incorporating the invention, traverses horizontally and vertically above the patient, lying on a horizontal bed above the X-ray source.
Patent GB-1265812-A (GB)
IPC: F02D9/00
Filed: 1969-03-06
Abstract: 1,265,812. Automatic controls. AUTOMOTIVE PRODUCTS CO. Ltd. 16 Feb., 1970 [6 March, 1969], No. 11968/69. Heading B7H. [Also in Divisions F2 and G3] A vehicle control unit for a vehicle including a power unit to drive the vehicle and a speed control for the power unit, comprises a fluid pressure motor 17 to operate the speed control selectively to a source of fluid pressure or drain, means 47 to create a fluid pressure differential acting on a movable member 29 of the valve means 47 to move the member 29 in a direction to connect the motor 17 to the source of fluid pressure, means 61 responsive to the rate of change of speed of the vehicle acting on the member 29 to oppose movement thereof by the fluid pressure differential during rate of change of vehicle speed in a positive sense, and vehicle speed responsive means 22 for rendering the means 47 inoperative when a predetermined vehicle speed is attained. The valve spool 29 is also operative to connect a second fluid pressure motor 18 controlling the application of the brakes selectively to the source of fluid pressure or drain. The apparatus also includes solenoid switches 44 and 55 operated manually or automatically to connect the source of fluid pressure with chambers 45 and 56 respectively in their " on " position. In their " off " position fluid is diverted back to the reservoir 37. Operation.-To start the vehicle, assuming the engine is running, the valve 44 is put in the " on " position so that liquid pressure builds up in chambers 45 and 46. Due to the flow restrictor 47 and vent via valve 23, the spool moves to the right allowing high-pressure fluid via 36, 26 to operate the motor 17. The carburetter control is thus moved to a speed increasing position and the acceleration of the vehicle causes the inertia weight 61 to pivot anticlockwise opposing the leftward movement of the spool 29. A constant acceleration of the vehicle is therefore achieved. When a predetermined speed of the vehicle is reached, the governor 22 moves the spool 49 of the valve 23 to block the vent from chamber 45. The pressures in chambers 45 and 46 become equal and a constant predetermined speed is maintained. To stop the vehicle, the solenoid valve 55 is put in the " on " position simultaneously returning the valve 44 to the "off" position. The chambers 45 and 46 are therefore connected to the reservoir 37 via the valve 44 and pressure acts in the chamber 56 to urge the spool 29 rightward. The motor cylinder 18 which operates the brakes is connected to the fluid pressure source via 36, 27, the braking of the vehicle causing the inertia weight 61 to pivot clockwise opposing rightward movement of the spool 29. A constant deceleration of the vehicle is therefore achieved.
Patent GB-1267127-A (GB)
IPC: A44B11/25
Filed: 1970-06-01
Abstract: 1,267,127. Buckles. INDUSTRIFJADRAR AB. 1 June, 1970, No. 26330/70. Heading E2B. A buckle for a safety belt for use in a landcraft, aircraft or seacraft, comprises one member in the form of a tongue 1 which is slidably insertable into another member in the form of a buckle body 2 having an opening for insertion of the tongue into a space for receiving the tongue, said space being defined by two fixed plane surfaces of the buckle body spaced apart a distance substantially equal to the thickness of the tongue, and by lateral guides 6 for the tongue disposed between said plane surfaces, a movable latch member 7 disposed in the buckle body and biased to engage in a recess 8 provided in a longitudinal edge of the tongue for retaining the tongue in said body, and a sleeve 12 mounted on the buckle body for camming the latch member out of latching position to release the tongue when the sleeve slid in one direction along the buckle body.
Patent GB-1288631-A (GB)
IPC: E05B37/02
Filed: 1969-06-26
Abstract: 1288631 Releasable fastenings E P ROGERS 23 June 1970 [26 June 1969] 32400/69 Heading E2A A window fastening comprises a portion A, Fig. 3 and a bolt housing F. The portion A is secured to a window frame (not shown) by screws B, has a screw-threaded hole which receives a screw D therein and has a hole to receive a bolt E of the bolt housing F therein. The latter is secured to a window casement (not shown) by screws J. The screws B and J are covered by the bolt E when it is in the fastening position as shown in Fig. 4a. The bolt E has projections L, Fig. 3, and a knob G and is mounted in the bolt housing F along with combination type locking collars H, each of which has a slot K to receive a projection L of the bolt E. When the window is closed it is fastened by the handle C being moved into engagement with a tapered surface M of the bolt housing F. Locking of the window is effected when the bolt E is moved, from the position shown in Fig. 4b to the position shown in Fig. 4a. Locking of the bolt is effected by rotating the collars H so that the slots K are no longer in line with the projections L of the bolt E.
Patent GB-1290798-A (GB)
IPC: C04B28/06
Filed: 1970-12-29
Abstract: 1290798 Refractory concretes LOCKHEED AIRCRAFT CORP 29 Dec 1970 61409/70 Heading C1H A refractory concrete consists of flat plate like particles and rod like particles of fused silica interfitting with each other so as to abut against and re-inforce one another, and to provide interstices between them which are filled with a mixture of fused silica of smaller size than the ethers and 15-30% of an aluminous cement. The silicas are size graded, and the cement is -200 Tyler. The cast article is heated up to 2300‹ F. before use.
Patent GB-1294947-A (GB)
IPC: H02P5/74
Filed: 1970-10-15
Abstract: 1294947 Inverter; control of A.C. motors TOKYO SHIBAURA ELECTRIC CO Ltd 15 Oct 1970 [15 Oct 1969] 49009/70 Headings H2F and H2J An electrical inverter 10 is used to drive two  loads 15 and 16 by means of two separate threephase thyristor bridges 11 and 12. Both the thyristor bridges are commutated by the same device 13. Each time one of the thyristors in the bridge circuit is to be turned off, the D.C. source is interrupted by switching off thyristor 17. This is achieved by triggering thyristor 22. When capacitor 19 has discharged, thyristor 22 turns off. Then thyristors 17 and 21 are triggered together with the relevant bridge thyristors by pulses from the same oscillator. The trigger pulses for the bridges pass via switches, to enable either or both loads to be deactivated, to a ring counter which triggers the thyristors in sequence. The loads may be induction motors and speed of rotation of one motor may be changed with respect to the other by inserting a frequency divider in the control circuit for the thyristor bridges. Speed control by adjustment of phase of triggering pulses is also envisaged.