baber/WOPTO huggingface dataset:
Patent GB-1463918-A (GB)
Title: Composite material with acoustic absorption properties
IPC: E04B1/74
Filed: 1975-02-21
Abstract: 1463918 Honeycomb laminates SOC NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION 21 Feb 1975 [26 Feb 1974] 7663/75 Heading B5N [Also in Divisions E1 and F2] A composite material with acoustic absorption properties comprises a core 3 of cellular structure disposed between two substantially parallel skins 1, 2 one of which is perforated by orifices 4 while the other is devoid of orifices, the core being composed of a plurality of cells A each of which extends from one skin to the other, a plurality of parallel-sided barrier elements 5 being inserted in the cellular structure, each element being made of material of high acoustic resistivity, e.g. felt or fine netting, each of which has an aperture part contained in a plane substantially parallel to the skins, the plane being common to the respective operative parts of all the elements, so that the operative parts form, together, the acoustic equivalent of an intermediate wall with high acoustic resistivity dividing, in the direction of thickness, the cellular structure into two superposed layers each formed by an assembly of sub-cells. The operative part of each element is defined as being that-portion thereof which divides at least one cell A of the structure into two superposed sub-cells A 1 , A 2  separated by the operative part of the element, each sub-cell being closed by the adjacent skin. The cellular structure may be made of adhesively bonded foil and is preferably a hexagonal honeycomb structure, the skins being bonded to the structure by adhesive or by brazing. In the embodiment shown in Fig. 5, each element 5, preferably having rolled up edges, extends over the surface of one cell and is supported by apertured positioning members 6 and 7. Figs. 11 and 14 show alternative forms of element each extending across the surface of a single cell, the element 105 of Fig. 11 having a projecting portion 105b and being supported by member 6 whilst the element 205 of Fig. 14 has three folded supporting parts 205b, 205c and 205d. In the embodiment of Figs. 18 and 19, the element 305 in the form of a double hexagon extends across the surface of two cells and is supported by the intermediate wall 10 of the cells, by tabs 11 cut from the cell walls and Figs. 20 and 22 (not shown) by a supporting member 12. The Specification also describes elements in the form of double hexagons with folded support portions and an element in the form of a multi-hexagon with folded support portions to rest on cell walls. The composite material may be used in a by-pass engine duct of an aircraft.
Patent GB-1036642-A (GB)
Title: Improvements in or relating to heating and/or ventilating apparatus for vehicles
Inventor: PLACKETT ANTHONY GEOFFREY
IPC: B60H1/00
Filed: 1964-02-24
Abstract: 1,036,642. Centrifugal fans. SMITHS INDUSTRIES Ltd. Feb. 12, 1965 [Feb. 24, 1964], No. 7550/64. Heading F1C. [Also in Division F4] The subject matter of this Specification is the same as that in Specification 1,034,688 but the claims differ.
Patent GB-1302764-A (GB)
IPC: H01L21/316
Filed: 1970-02-17
Abstract: 1302764 MIS memory elements NIPPON ELECTRIC CO Ltd 17 Feb 1970 [18 Feb 1969] 7592/70 Heading H1K An MIS memory element consists of a semiconductor substrate carrying an electorde, an alumina film on the semiconductor and an electrode on the film. A voltage of either polarity above a threshold level applied between the electrodes causes electrons to be injected into the film where they remain trapped more or less permanently. In a typical case the alumina forms the gate insulation of an otherwise standard planar IGFET and preferably has a 200 layer of pyrolytically or vapour deposited silica between it and the silicon substrate or the overlying electrode. The alumina alternatively forms the dielectric in an MIS silicon diode with aluminium as the metal. Suitable alumina is formed by reaction of specified amounts of aluminium trichloride and carbon dioxide carried is separate streams of hydrogen in an RF induction or resistance heated chamber. Temperatures in the range 800-900 C. are preferred and give a deposit about 2000 thick in ¢ an hour. The V-C characteristic of the diode is set by a conditioning voltage and is shifted progressively to a higher voltage range as the conditioning voltage increases further beyond a critical value. Both devices are therefore suitable as permanent read-only memory elements. Germanium as an alternative semiconductor.
Patent GB-873669-A (GB)
Title: A process for the production of anhydrous acetone isohydrazone
IPC: C07D229/00
Filed: 1960-03-03
Abstract: Anhydrous acetone isohydrazone is recovered from its aqueous solution by adding an alkali metal hydroxide to the solution, separating from one another the two layers formed and rectifying the lighter of the two layers to yield anhydrous acetone isohydrazone.  The alkali metal hydroxide is preferably added in the form of a concentrated aqueous solution.
Patent GB-582156-A (GB)
Title: A process for the manufacture of ª‡.ª†-dihydroxy-ª‰.ª‰-dimethyl-butyric-acid-(3-hydroxy-propyl)-amides
IPC: C07C233/16
Filed: 1945-03-27
Abstract: a .g -Dihydroxy - b .b  - dimethyl - butyric - acid - (3 - hydroxy - propyl) - amides are obtained by reacting a -hydroxy - b .b  - dimethyl-g -butyrolactone with 3-hydroxy-propylamine in the absence of a solvent.  In the two examples the reaction is brought about by heating.
Patent GB-555695-A (GB)
Title: Improvements in or relating to hydraulic jacks for aircraft and the like
IPC: B64C25/22
Filed: 1942-06-05
Abstract: 555,695. Making cylinders. SQUIRE, A. C: A. June 5, 1942, No. 7707. [Class 83 (ii)] . [Also in Group XXVI] Cylinders for hydraulic jacks such as are used on aircraft for operating landing gear, bomb .dors &c. are formed from a drawn steel tube a with thickened portions at the centre and ends on to which the trunnion sleeve and flanges, respectively, are welded or brazed. The flanges have a short sleeve portion d with thickened edge g and are drilled with a ring of bolt holes for attachment of a cover or gland. The end faces of the flanges and tube are oppositely bevelled at the meeting edges to form a recess for the welding or brazing material so that the end face may be machined flat after uniting. They are also welded at h. The sleeve and flanges are roughly machined before assembly. The trunnion sleeve k has hollow trunnions l, is welded at m and cut away at n to reduce weight.
Patent GB-455272-A (GB)
Title: Improvements in separation of wax from mineral oil by filtration
IPC: C10G73/02
Filed: 1935-03-12
Abstract: In a process for separating paraffin or other wax from chilled oil by means of a rotary suction filter in an atmosphere of chilled gas the use of filter aid is rendered unnecessary by treating the oil with solvents in which the wax is insoluble at low temperatures or with solvents of low viscosity which give crystalline wax on chilling.  A mixture of acetone and benzol with or without toluol is mentioned as an example of the first class of solvents and propane as one of low viscosity.  Other materials which are stated to modify the crystalline character of the wax and thus increase the rate of filtration are a pitchy residue from a cracked cycle fuel, the distillation residue of a condensation product of naphthalene in the presence of aluminium chloride, as described in Specification 437,779, the condensation product of a chlorinated wax with aromatic hydrocarbon in the presence of aluminium chloride, mineral oil distillation residues and coal-tar residues.  Such materials are added in a proportion of from 13 to 6 per cent of the weight of the wax-bearing oil.
Patent GB-847835-A (GB)
Title: Improvements relating to photographic apparatus
Inventor: ELORANTA VAITO KALERVO
IPC: G03B17/52
Filed: 1957-03-08
Abstract: 847,835. Photographic apparatus. INTERNATIONAL POLAROID CORPORATION. March 8, 1957, No. 7737/57. Classes 98(1) and 98(2) For spreading a fluid between a pair of superposed sheets, usually to develop a latent image in one of them and obtain a positive print by transfer in the other one, the apparatus comprises a fixed member which defines, in cooperation with a movable rigid member, gaps of predetermined widths in response to movement of the sheets through the gaps, first to discharge fluid from a container disposed between the sheets and normally secured to one of them, and then to spread the fluid between the sheets. The fluid-spreading apparatus described as incorporated into a camera of the type of Specification 835,433 in which the procedure is insertion of a film unit comprising photosensitive sheet 20 and second sheet 22 with container 40 (shown only in discharged condition, Fig. 5), into a passage 16 of the camera for separation by wedge-shaped section 30, the photo-sensitive sheet into exposure position behind apertured rear inner wall 24 and the second sheet with container into a chamber 28 for that purpose. For the present invention the camera is provided with an additional, but open, chamber bounded by sections 34, 36, 38 of which section 34 constitutes the fixed member referred to above, and such additional chamber contains the movable rigid member which is designated generally by the numeral 44. The procedure now is that on insertion of the film unit 20, 22 into this additional chamber and on into the camera of Specification 835,433, the leading edge of the film unit engages projection 72 of the movable member 44 and rotates the latter clockwise about shaft 46 and against spring 60 into inoperative position, but on withdrawal of sheets 20, 22 after exposure of the former the return of movable member 44 causes collapse of the container 40 in the first gap referred to above, which gap lies between fixed member or section 34 and a first curved section 52 of the member 44, to release the fluid 42 as shown in Fig. 5; and then spreading of such fluid in the second and narrower gap which lies between the same section 34 and a second curved section 54 of the movable member 44. Fig. 6, not shown, illustrates a camera with accommodation for separate sheets as 20, 22 in roll form, the former sheet being photosensitised and the latter having fluid containers at appropriately spaced intervals, and for this the movable rigid member may be moved between open position, and closed position for operation on the sheets as these are superimposed and withdrawn after exposure, by manual means extending outside the camera. The apparatus avoids a difficulty of single-gap systems in which a gap for spreading the fluid is of a width insufficient to pass the container in either original or collapsed condition. Specification 684,592 also is referred to.
Patent GB-609532-A (GB)
Title: Blowpipe powder valve
IPC: F23D14/46
Filed: 1946-03-12
Abstract: 609,532. Perforating and dividing by fusion. LINDE AIR PRODUCTS CO. March 12, 1946, No. 7742. Convention date, April 12, 1945. [Class 83 (iv)] [Also in Group XXIX] A valve for controlling the flow of powdercarrying fluid, e.g. air, into a blow-pipe cutter comprises a hollow body 10 removably attached to the blow-pipe and divided into chambers 12, 14 by a spring-loaded diaphragm 16 6 through which passes a tightly-fitting valve stem 18, the chamber 14 having a lateral inlet I and a central outlet E controlled by the end of the stem, and is characterised in that the base of the chamber 14 is flat and co-extensive with the bottom of the inlet and the end portion of the stem has a resilient, frusto-conical closure member 24 of rubber &c. moulded thereon. The seating around the outlet may be a hardened steel or other metal washer 38, or a chromium-plated surface integral with the body or washer. The powder valve and adjacent cutting oxygen valve are both operated by the lever L, the former opening slightly before the latter.
Patent GB-953786-A (GB)
Title: Printers blankets and method of making printers blankets
IPC: B41N10/04
Filed: 1962-02-28
Abstract: 953,786. Printing press blankets. UNITED STATES RUBBER CO. Feb. 28, 1962 [April 17, 1961], No. 7792/62. Heading B6C. A method of making a lithographic printer's blanket for use in an offset press comprises embedding a multi-cord fabric in a layer of unvulcanized elastomeric compound having a Shore "A" durometer value in the range 30-100, coating one surface of said carcass with a facing layer of an unvulcanized elastomeric compound having a Shore " A " durometer value of 40-70, vulcanizing the compounds of both layers, and cutting the coated carcass to the size of the finished blanket. In one example, a tire-cord fabric 23 having warp and weft threads 24, 25 is embedded in a layer 22 of a polyurethane compound comprising a mixture of polyurethane rubber, stearic acid, carbon black and dicumyl peroxide. The resulting carcass is coated with a layer 21 of a polyurethane compound comprising a mixture of a polyurethane rubber, stearic acid, carbon black and dicumyl peroxide which is mixed with methyl ethyl ketone until a dough is formed, the dough being spread on the carcass as a facing layer. The coated carcass is vulcanized in a dry inert atmosphere, e.g. nitrogen gas. In a second example, a blanket is cast on a tirecord fabric from a liquid pre-polymer using toluene diisocyanate as a cross-linking agent. This carcass is coated with the facing compound of the first example prior to vulcanization in a dry inert atmosphere. The blanket may be attached to the press cylinder through clamps and clamp bolts 28, 29, Fig. 3A, or holes 27 having metal inserts 31, Fig. 4, may be provided in the scalloped ends 26 of the blanket. In yet another method of attachment, a layer of elastomer is removed in the area of the scollops and a thickening of the weft threads 25 is effected in this region.
Patent GB-193706-A (GB)
Title: Improvements in carburettors
IPC: F02M7/14
Filed: 1922-03-17
Abstract: 193,706. Jennings, J. T. March 17, 1922. Spray carburettors.-The carburretor is of the type in which a rich mixture of fuel and air is admitted into the main air body flowing towards the throttle valve. According to the invention, the main air enters through a series of progressively loaded spring valves so that on an increase of load the consequent fall in the velocity of the air current allows one or more of the air valves to close and the mixture thus becomes richer. The air valves 9 are split rings secured at 10 by a tube 6 and closing against the pipe 4. The primary air enters at 20 and passes under the lower edge of the Venturi tube 18 to pick up fuel that may drip from the nozzle 19; air also flows through small ports around the top of the Venturi tube. The throttle valve 1 of the rotary plug tvpe has a passage 15 in its outer surface to allow the fuel to impinge on the plug 50 when the throttle is nearly closed. There is also a throttle valve 24 in the rich mixture passage which may be coupled to the main throttle. The main throttle may be of the butterfly type, and the valve 24 may work in an adjustable ported sleeve. There may be a passage in the casing 13 of the main throttle to allow mixture to flow into the induction pipe past the trailing edge of the throttle when the latter is nearly closed. Specifications 20510/13 and 15271/15 are referred to.
Patent GB-558664-A (GB)
Title: A new or improved route indicator
IPC: G09B29/06
Filed: 1942-06-09
Abstract: 558,664. Route indicators. BOOTH, J. I. June 9, 1942, No. 7838. [Class 146 (ii)] [Also in Group XVIII] A route indicator for vehicles comprises a casing for attachment to the dashboard, a pair of spools mounted therein, a flexible band camed by the spools, and a manually operated member for moving the band in one or other direction through clutch devices associated with the spools. The band has a series of pictures, which may be photographs, of the road junctions to be encountered and indications of the direction to be taken and place names on the route. The band as shown in Figs. 3 and 5, is mounted on slotted spools 35 arranged on a U-shaped frame 21 in a casing 10 and passes over guide rollers 51 behind a glass panel 11. The spools are held in position by conical studs 33 Fig. 5 on a hinged top plate 30 which when raised facilitates the removal and replacement of the band. The other end of the spools engage projections 43 on ratchet or clutch discs 42 Figs. 5 and 6 which with balls 44 form free wheel drives for the spools. The balls 44 are carried by gear wheels 45 in mesh with a gear 46 on the manipulating handle 47. The casing 10 is attached to the dashboard of the vehicle by means of a metal strap 15 and stud 14. To the metal strap is pivoted a yoke 27 with a screw 28 to engage a recess in the bottom plate of the frame 21 to hold the frame in position.
Patent GB-653652-A (GB)
Title: Improvements in or relating to noise suppression circuits in radio receivers
IPC: H03G11/02
Filed: 1948-03-16
Abstract: 653,652. Radio interference suppression. HUGHES, D. H., and PYE, Ltd. March 16, 1948, No. 7844. [Class 40 (v)] A noise limiting circuit for amplitude modulated signals comprises a noise limiting rectifier which is biassed according to the mean level of the modulated carrier and is fed through a resistance and a capacitor from a divided load resistor so that the higher frequencies are emphasized before limiting, and means are provided in the output circuit to restore the balance in the frequencies. In Fig. 2, audio frequency signals are fed through diode 4 to the audio frequency amplifier from the resistor load 2, 3, of signal detector 1. Diode 4 is normally maintained conducting by the negative voltage applied through smoothing circuit 5, 6, 7, the biassing voltage thus obtained being dependent on the mean carrier amplitude. Noise impulses above this mean carrier level cause diode 4 to become non-conducting and are therefore suppressed from the audio output. In order to increase this effect, diode 4 is fed from the load resistor 2 via a condenser 9 and a resistance 8, so that the higher frequencies are emphasized. The condenser resistance filter 11, 12 connected in the audio output circuit introduces a correcting emphasis of the lower frequencies after limiting has been effected, to restore the balance in the audio output. Diode 10 is connected across resistance 8 to remove impulses of reverse polarity which occur due to the effect of the condenser resistance circuit 8, 9. The invention may be applied to limiters which are connected in parallel instead of in series with the signal path, or to combinations of series and parallel limiters.
Patent GB-255374-A (GB)
Title: Improvements in machines for brushing the bodies, shapes or pull-overs of hats
IPC: A42C1/08
Filed: 1926-03-23
Abstract: 255,374. Sindermann, F. March 23, 1926. Brushing in manufacture. - Relates to brushing machines of the kind in which a rotating cylindrical brush co-operates with a work support over which a hat body is placed from the side and which presses the hat body towards the brush, and consists in a work support having two raised parts and a concave part between them so that brushing is simultaneous over a considerable area of the hat body. A work support 4 on a counterweighted treadle-controlled lever 5 has rollers 9, 10 at its end and a concave part between them. On depression of the treadle 7, the hat body is threaded over the support, and is then fed forward by the brush 2, being retarded by hand as necessary. In a modification, the rollers 9, 10 are substituted by rounded projecting portions of the work support.
Patent GB-136582-A (GB)
Title: Improvements relating to Aircraft Control Mechanism.
Inventor: MACKENZIE-KENNEDY CHESSBOROUGH
IPC: B64C13/02
Filed: 1918-05-13
Abstract: 136,582. Kennedy, C. J. H. Mackenzie-, and McLaughlin, G. C. May 13, 1918. No Patent granted (Sealing fee not paid). Looking by frictional detents.-A device for locking an aeroplane control comprises a pulley d, around which the control cable c is passed concentric with a fixed drum f, balls g, g<1>, acted upon by a spring i, being adapted to jam between the drum f and the upper part of an eccentric flange on the pulley. The control lever h, pivoted about the axis e of the drum, passes between the balls g, g<1> and through a slot d' in the pulley d so that movement of the lever first releases' one of the balls and then moves the pulley d.
Patent GB-126479-A (GB)
Title: Improvements in and connected with Apparatus for Producing Formaldehyde.
Inventor: CALVERT GEORGE
IPC: C07C45/38
Filed: 1918-05-13
Abstract: 126,479. Calvert, G. May 13. 1918. Vaporizing by heat or combustion.-A portable apparatus for producing formaldehyde for disinfecting rooms &c. consists of a boiler 1 containing methyl alcohol heated by a spirit lamp 3; the alcohol vapour is heated by passing through a coil 13 which surrounds the catalyst tube 7 and then enters the tube by a jet 6, together with a regulated air supply from inlets 8; the catalyst 11 consists of copper gauze.
Patent GB-806698-A (GB)
Title: Improvements in and relating to the manufacture of embroidered designs
Inventor: LENTON STANLEY THOMAS
IPC: D06Q1/00
Filed: 1955-03-19
Abstract: 806,698. Ornamenting. LENTON & CO. Ltd., L. March 19, 1956 [March 19, 1955], No. 8050/55. Class 93 An embroidered design is provided with a backing of a film of thermoplastic material e.g. polyvinyl chloride applied under heat and pressure, for example by heating the film and passing it and the design between rollers. The design may then be applied to a fabric by applying further heat and pressure e.g. by means of a domestic iron. The designs may be in the form of a continuous strip with a .similar strip of backing, or the backing may be applied after the individual designs have been cut out. Specification 595,033 is referred to.
Patent GB-1487040-A (GB)
Title: Tundish liners
IPC: B22D41/02
Filed: 1976-03-01
Abstract: 1487040 Tundish lining M D LABATE 1 March 1976 08050/76 Heading F4B The lining of a tundish 10 is formed by shaped inserts 21, 23, 24 of combustible material having a known rate of consumability sufficiently long to complete a pour of molten metal and having apertures for registering with refractory nozzles 18 positioned in apertures 16 of the tundish. The material may comprise approximately 15% by weight of sawdust, 54% of dolomite and 31% of sodium silicate. Exothermically reactive material may be present in such a mixture, which material is exemplified in the Specification. The normal refractory brick lining 17 may be positioned in the tundish and the liner positioned thereover.
Patent GB-416928-A (GB)
Title: Improvements in the hardening of the teeth of gear wheels
IPC: C21D1/40
Filed: 1933-03-17
Abstract: 416,928. Heating by electricity. KENDALL & GENT (1920), Ltd., and HALL, J. L., Gorton, Manchester. March 17, 1933, No. 8113. [Class 39 (iii).] In apparatus for hardening the teeth of gear wheels by electrodes, the wheel is mounted so as to be rotatable on a head between electrode carriers b, c which are adjustably mounted upon slides d on the frame e. The spur electrodes f, g are slidably mounted within their carriers and are urged forward by springs h. The slides d are normally forced apart by springs h<1> and are moved towards each other by the operation of a foot pedal connected by ropes i passing over pulleys i<1> to the respective slides. Only one electrode may be used, the circuit then being completed through the body of the wheel. In a modification, Fig. 2, the wheel a is depressed to bring the tooth into contact with an electrode f, and in a further modification, Fig. 3, the flanks of the tooth, when depressed are brought into contact with electrodes f, f<1>.