baber/WOPTO huggingface dataset:
Patent GB-1101184-A (GB)
Title: Voltage comparators
Inventor: WHEABLE DESMOND
IPC: H03M1/00
Filed: 1963-09-13
Abstract: 1,101,184. Electric selective signalling. HAWKER SIDDELEY DYNAMICS Ltd. 9 Dec., 1964 [13 Sept., 1963], No. 36186/63. Heading G4H. A comparator for two voltages comprises means 5, 6, 7 for indicating when the potential on one plate of a condenser 4 changes by a predetermined amount from a predetermined value, and electrical means for (a) charging the condenser 4 such that the potential of said one plate remains at said predetermined value, but a P.D. is developed across the condenser which is a function of the first voltage, and then (b) varying the potentials of both condenser plates in synchronism by an amount which is a function of the second voltage. The Figure shows the comparator as part of an analogue-to-digital converter. With relay contacts RL1, RL2, RL3 in the positions opposite to those shown, and transistor 8 conducting, the voltage to be digitized is applied across terminals 10, 11 to charge capacitor 4 via cathode-follower valve 1. Then transistor 8 is blocked and relay contacts RL1, RL2, RL3 changed over, and pulses from source 21 are counted at 33 and also fed via capacitor 23 to produce a staircase voltage across capacitor 27 which is fed through valve 1 to cancel out the voltage previously established across capacitor 4. A detector 7 produces a signal when the voltage across capacitor 4 rises above zero to cause (a) transistor 31 to conduct, thereby subtracting the effect of one pulse from capacitor 27, (b) the pulses from source 21 to be counted at 34, not 33, and to reach capacitor 27 via capacitor 24, not 23, thus making the staircase steps one-tenth the previous size. A second signal from detector 7 terminates the counting and resets the system. The valve 1 may be replaced by a field-effect transistor.
Patent GB-1339384-A (GB)
Title: Method for the manufacturing of a semiconductor device
IPC: H01L29/40
Filed: 1972-08-03
Abstract: 1339384 Semi-conductor devices ITT INDUSTRIES Inc 3 Aug 1972 [7 Aug 1971] 36232/72 Heading H1K Controlled lateral spacing between an electrode of polycrystalline silicon and a diffused region of a semi-conductor device may be achieved by producing an insulating layer 2, e.g. of silicon nitride, on a silicon body 4, depositing a layer 3. of polycrystalline silicon thereon, etching layer 3 to form an electrode 30, oxidizing the surface of the electrode to form a protective layer 61, 7 thereon, etching the exposed area of layer 2, and diffusing a region 1 into the body exposed by removal of layer 2. The thickness of layer 7 and the diffusion conditions determine the spacing between the electrode and diffused region. The electrode may be a gate electrode of an I.G.F.E.T., or a field screening electrode surrounding a device of an integrated circuit. The field screening electrode may be connected to the body, or remain insulated therefrom. In an alternative embodiment a layer of silicon oxide is formed by thermal oxidation prior to deposition of layer 2, parts of the layer being removed prior to diffusion. Several polycrystalline layers and their protective oxides may be used to form an electrode. The silicon electrode may be doped with boron or phosphorus.
Patent GB-761337-A (GB)
Title: Improvements in or relating to a heat exchange roll
IPC: D21F5/02
Filed: 1953-12-15
Abstract: 761,337. Hollow rollers. ARMSTRONG CORK CO. Dec. 15, 1954 [Dec. 15, 1953; Dec. 15, 1953], No. 36293/54. Class 34(1) A calender or like roll 2 having a thin outer shell 3 with annular channels 4 through which heating or cooling fluid flows and an inner core 5, the roll being provided with means for varying the temperature in different zones of its surface has in the core 5 a central passage 6 with a plurality of concentric pipes 7, 8, 9, pipes 7, 8 being fixed to the roll but the inner pipe 9 being frictionally engaged by pipe 8 so as to rotate with the roll normally but being capable of longitudinal and radial movement by means of hand wheels 40, 41. A housing 12 encases a radial inlet manifold 13 and a radial outlet manifold 14. Heated or cooled fluid enters the system under pressure through pipe 18 and thence via manifold 13 and ports 22 passes via pipe 7 and radial passages 25 to longitudinal manifolds 26 at opposite points on the circumference of core 5, the manifolds being sealed off from annular channels 4 by shields 26 having apertures 28 allowing the fluid to enter channels 4, each manifold 26 being divided by dams 29 to provide three small compartments 30 at each end and a large compartment 31. In similar fashion exhaust manifolds 32 (Fig. 3) are divided by dams 35 to form small compartments 37 and a large compartment 38, the fluid being led away through radial passages 36 to the inner pipe 9 and discharge pipe 19. The passage of fluid through channels 4 may be impeded by shutting off completely or partially certain of passages 36 by adjusting the position of inner pipe 9 with respect to intermediate pipe 8 which has orifices 54 communicating with passages 36, the pipe 9 having larger orifices 55...58 in register with orifices 54 during normal operation but acting to vary flow as pipe 9 is adjusted. In a modification (Fig. 10, the roll 102 has a thin outer shell 103 with annular channels 104 on the inner surface thereof, the shell 103 surrounding a core 105 having a passage 106 carrying a plurality of concentric pipes which conduct the fluid into the roll and remove it after circulation. The fluid enters by a supply pipe 108, controlled by a valve 141, into circular manifold 109 thence via passage 106 and radial passages 113 to horizontal manifolds connecting the sets of annular channels, the injector arrangement 110 being stationary. Exhaust manifolds 118 discharge into separate pipes in the concentric system and thence to pipes 125, 130, 135 controlled by valves 126, 131, 136. Specification 655,052 is referred to.
Patent GB-1479026-A (GB)
Title: Push button switch
IPC: H01H13/12
Filed: 1974-08-20
Abstract: 1479026 Retractive switches; switch contacts GIKO KK 20 Aug 1974 [24 Aug 1973] 36505/74 Heading H1N A push-button switch has a push-button 2 which depresses through a resilient cushion 10 of e.g. rubber and a member 4, a resilient contact member 6, one end 6a of which engages with line contact a fixed contact 7 whilst the other end 6b is secured to substrate 8 which supports the fixed contact 7. In a second embodiment, Fig. 3 (not shown) the rubber cushion 10 between member 4 and button 2 is replaced by a spring 14.
Patent GB-890083-A (GB)
Title: Acylation of hydroxy compounds with vinyl esters
Inventor: TUSCHHOFF JOHN V
IPC: C08B31/04
Filed: 1958-11-13
Abstract: Polysaccharides are acylated by reacting with the vinyl ester of an aliphatic monocarboxylic acid, for example vinyl formate, acetate, propionate or butyrate in the presence of water under alkaline conditions.  Polysaccharides mentioned are gum arabic, agar-agar, alginic acid, inulin and particularly starch.  Suitable alkaline catalysts are the hydroxides and carbonates of the alkali metals, alkyl tertiary amines and the quaternary ammonium hydroxides.  Starch of the waxy or non-waxy type derived from root, stem or seed may be used.  The reaction of starch with the vinyl esters is moderately rapid over the range of 75 DEG F. to 115 DEG F. The starch may be used as an aqueous slurry of granular unpasted starch or as an alkaline aqueous starch paste.  The mixture may be held at a pH in the range of 7,5 to 12,5.  On completion of the reaction, the reaction mixture is neutralized to pH 6,5 with an acid, e.g. hydrochloric or sulphuric, and the modified granular starch recovered by filtration and drying.  Examples describe the reaction commercial corn starch with vinyl acetate in the presence of NaOH, LiOH, KOH, Na2CO3, K2CO3, NH4OH or triethylamine; the reaction corn starch with vinyl formate, acetate, propionate, butyrate, crotonate, 2-ethylhexanoate or stearate using Na2CO3, NaOH or KOH as catalyst; the reaction of various types of native starch, thickboiling, acid-modified and hypochlorite oxidized corn starches with vinyl acetate using Na2CO3 or NaOH. Specification 489,330 is referred to.ALSO:Aliphatic hydroxy compounds are acylated by reacting with the vinyl ester of an aliphatic monocarboxylic acid in the presence of water under alkaline conditions.  A pH of 9-10 is preferred. Suitable alkaline catalysts are hydroxides and carbonates of the alkali metals, alkyl tertiary amines and quaternary ammonium hydroxides. Vinyl esters mentioned are vinyl formate, acetate, propionate or butyrate.  Hydroxy compounds specified are pentaerythritol, sorbitol, dextrose, sucrose, and a -methylglucoside.  The process takes place at room temperature but raised temperature may be used, e.g. refluxing at 75 DEG C. Examples describe the preparation of glycerin diacetate, dextrose triacetate, sucrose tetraacetate, ethylene glycol monoacetate and the acetylation of corn syrup solids.  Specification 489,330 is referred to.
Patent GB-522756-A (GB)
Title: Improvements in or relating to the treatment of grain or seeds
IPC: A01C1/08
Filed: 1938-12-15
Abstract: 522,756. Treating seed. OTT, W. Dec: 15, 1938, No. 36549. Convention date, July 27. Addition to 515,169. [Class 58] [Also in Group XVIII] A seed immunizing machine of the type described in the parent Specification in which the supply of immunizing material is controlled by a tipping balance having two compartments into which the seed's flow alternately has the tipping balance and the seed supplying means so arranged that the seeds fall vertically into each compartment which is so shaped that the central axis of the inflow coincides with the axis of symmetry of the compartment and that the vertical line through the centre of gravity of the seeds heaped up in the compartment coincides with the axis of symmetry. In the form shown the tipping balance with symmetrical compartments 1, 2, is arranged below a spout 3 provided with a flap 9 having a pin 11 projecting laterally therefrom and adapted,to be struck alternatively by rods 12, 13 projecting from the tipping balance thus moving the flap to direct the flow of seeds down the symmetrical axis of the appropriate compartment. In a modification a deflecting flap is dispensed with and the spout 3 delivers into auxiliary spouts mounted on the balance and provided with offset nozzles that deliver down the axis of symmetry ; a hood may be arranged over the balance between these auxiliary nozzles to shut off the flow of seeds during the tipping movement. In a further modification, the balance rolls as it tips to bring the receiving compartment to position below -the spout 3. The roller may be conical so that the rolling takes place conically.
Patent GB-1125086-A (GB)
Title: Paper with good dielectric properties
Inventor: SCHOENUNG SIMON
IPC: H01G4/16
Filed: 1966-08-16
Abstract: 1,125,086. Laminated dielectric material. PAPIERFABRIK OBERSCHMITTEN W., & J. MOUFANG A.G. 16 Aug., 1966 [21 Aug., 1965], No. 36646/66. Heading B5N. A dielectric for capacitors comprises at least two layers of paper which are bonded together by a dielectric material comprising a silicone resin, a polyolefine, e.g. polyethylene, or cellulose nitrate, cellulose acetate, cellulose acetobutyrate or mixtures thereof. The bonding material may be applied as a solution from rollers. Two dielectric assemblies may be wound in alternating layers with two aluminium foils to form a capacitor, the resulting coil being dried in vacuo and impregnated with a chlorodiphenyl.
Patent GB-323623-A (GB)
Title: Improvements in fog penetrating appliances for use in connection with vehicular transport and ships
IPC: B63B45/04
Filed: 1928-12-13
Abstract: 323,623. Raybould, A. E. Dec. 13, 1928. Lantern screens.-Electric or other lamps of vehicles, ships &c. are fitted with a fog-penetrating device comprising a translucent disc or plate a preferably of ambercoloured glass or celluloid, having a hollow divergent member c preferably conical in form arranged in alignment with the centre of the lamp refiector. The disc a may be fitted with spring clips or a rubber band d enabling it to be easily secured to the lamp front.
Patent GB-1024883-A (GB)
Title: Insolubilisation of starch
Inventor: HART ROBERT THOMPSON
IPC: C08B31/00
Filed: 1962-09-26
Abstract: A cooke starch is insolubilized by treatment with triethanolamine titanate.  The titanate may be added to starch compositions used for coating paper either on or off the machine, or to starch compositions for use as adhesives in making laminates of paper or paperboard. Alternatively, the substrate may be coated with a starch composition containing no insolubilizing agent and the coating subsequently treated with triethanolamine titanate.ALSO:A cooked starch is insolubilized by treatment with triethanolamine titanate.  The titanate may be added to starch compositions used for coating paper either on or off the machine, or to starch compositions for use as adhesives in making laminates of paper or paperboard. Alternatively, the substrate may be coated with a starch composition containing no insolubilizing agent and the coating subsequently treated with triethanolamine titanate.ALSO:A cooked starch is insolubilized by treatment with triethanolamine titanate.  The titanate may be added to starch compositions used for coating paper either on or off the machine, or to starch compositions for use as adhesives in making laminates of paper or paperboard.  Alternatively, the substrate may be coated with a starch composition containing no insolubilizing agent and the coating subsequently treated with triethanolamine titanate.ALSO:Paper or paperboard is coated with a cooked starch insolubilized by treatment with triethanolamine titanate.  The paper or paperboard may be coated with a starch composition containing no insolubilizing agent and the coating subsequently treated with triethanolamine titanate, or the titanate may be added to the starch prior to the application thereof.
Patent GB-813979-A (GB)
Title: Improvements in or relating to the preparation of alkynyl magnesium halides
IPC: C07F3/02
Filed: 1957-11-26
Abstract: Alkyl Grignard compounds are prepared by reacting a compound of formula R.C=C.X1 (wherein R represents an alkyl, cycloalkyl, aryl or aralkyl group containing no substituent radicals reactive under the conditions of the reaction and optionally ethylenically unsaturated and X1 is chlorine or bromine) with magnesium under substantially anhydrous conditions in a liquid cyclic ether of formula (CH2)nO (wherein n is 4 or 5 and one or more of the hydrogen atoms are optionally substituted by radicals not capable of reacting under the conditions of the reaction) or in a liquid polyethylene glycol diether of formula R11(OCH2CH2)mOR111 (wherein R11 and R111 represent the same or different alkyl groups and m is an integer).  Specified cyclic ethers are tetrahydrofuran, tetrahydropyran and 2-methyl-tetrahydrofuran. Preferred polyethylene glycol diethers are those in which m is 2 or 3 and R11 and R111 contain not more than 4 carbon atoms.  The reaction may be initiated by a crystal of iodine. It is preferably carried out under a current of dry nitrogen.  The Grignard compound may be condensed without isolation to form hydrocarbons, ketones, carbinols, ethers, carboxylic acids and other compounds.  In an example magnesium is reacted with isoamylacetylene bromide in dry tetrahydrofuran under a current of dry nitrogen to give isoamyl acetylene magnesium bromide.  The preparation of isoamylacetylone magnesium chloride and n-butyl acetylene magnesium bromide is also described.  Details are also given of the working-up of these compounds to give 7-methyl-oct-3-yn-2-ol, 2,7-dimethyl - oct - 3 - yn - 2 - ol, non - 4 - yn - 2 - ol and n-oct-3-yn-2-ol.  The following list shows other compounds which are prepared from the alkynyl magnesium chlorides and bromides <FORM:0813979/IV (b)/1> <FORM:0813979/IV (b)/2> <FORM:0813979/IV (b)/3> <FORM:0813979/IV (b)/4> <FORM:0813979/IV (b)/5> <FORM:0813979/IV (b)/6>
Patent GB-1084504-A (GB)
Title: Battery terminals and method of making same
IPC: H01M50/172
Filed: 1964-09-09
Abstract: 1,084,504. Accumulator terminal posts. GLOBE-UNION Inc. Sept. 9, 1964 [Oct. 2, 1963], No. 36879/64. Heading H1B. The electrode post 28 is electrically connected to the terminal post 30, having a cavity 36 that is filled with mouldable material, e.g. sealing wax or epoxy resin.
Patent GB-1069026-A (GB)
Title: Passive microwave limiter
Inventor: ROBINSON STEPHEN JOSEPH
IPC: H03G11/00
Filed: 1965-08-27
Abstract: 1,069,026. Limiters. MULLARD Ltd. Aug. 27, 1965, No. 36903/65. Heading H3T. A microwave limiter comprises a plurality of hybrid couplers connected in cascade, each having an input port 1 and output port 4; the other two ports 2, 3 of each coupler are terminated by diodes D. The diodes are preferably connected in series for D.C. the path being completed by R.F. chokes RFC: the shape of the limiting characteristic may be modified by connection of a resistor in the D.C. path. The diodes may be of the backward type, or point contact silicon mixing diodes, while the hybrid couplers may be of the re-entrant type.
Patent GB-1395361-A (GB)
Title: Roller type presser foot
IPC: D05B29/10
Filed: 1972-08-08
Abstract: 1395361 Presser foot R B HOWELL 8 Aug 1972 [13 Aug 1971] 36990/72 Heading D1G A presser foot including a roller 18 journalled in supports 22, 24 by live axles has the end of one axle rounded and one support provided with a channel whereby a needle thread T may be passed between roller and the support. The presser foot which is of plastics material presents projections 22, 24 having holes 28, 30 (or a notch, Fig. 10 not shown) receiving live axles 32, 34 of the roller 18 which, as shown, is of a form grooved for guiding zipper teeth. The projection 34 is curved as at 38 to define with the curved end of the short axle 34 a cleft in which the needle thread T is entered to pass into notch 40 and past the roller, in direction 44, to enter the needle space 28. The projections are stiff vertically to accommodate the vertical load on the roller but allow lateral movement to permit axle 34 to leave its hole 40 while swinging about axle 32, to permit the removal of the roller.
Patent GB-1022724-A (GB)
Title: Electrical contact pin
IPC: H01R13/17
Filed: 1963-09-20
Abstract: 1,022,724. Two-part couplings. BURNDY CORPORATION. Sept. 20, 1963 [Sept. 28, 1962], No. 37116/63. Heading H2E. A contact pin comprises a conductive longitudinally extending body member and an elongate U-shaped spring member having one limb fixed to one end of the body member, the second limb being positioned above a longitudinal surface opening in the body so that when the pin is inserted into a rigid socket the second limb of the spring is deflected into said opening. The limb 20 of the spring 12 is secured to the body 10 by " pinching " the tip of the pin portion 14 at the end 80. A base portion 24 resiliently biases limb 22 away from limb 20, and limb 22 is preferably arcuately bent to form an inclined portion 26 to serve as a lead-in surface for guiding the pin into a mating socket. An annular groove may be provided in the outer surface of the body 10 to engage a detent in a mounting block.
Patent GB-1460840-A (GB)
Title: Vehicle body
IPC: B60P3/04
Filed: 1974-08-23
Abstract: 1460840 Vehicle bodies COOKS (ROAD TRANSPORT ENGS) Ltd 13 Aug 1975 [23 Aug 1974] 37279/74 Heading B7B A rectangular roof frame 21 for a tilt trailer is supported at its front and rear corners by uprights 16, 17, respectively, the roof frame and rear uprights having co-operating, inclined bearing surfaces 27, 23, whereby the roof frame may ride up the rear uprights on receiving a blow on its front edge. The roof frame is connected to the uprights by pin-and-slot connections 28, 30 and 29, 31, or by pins on the front and rear faces 24, 25 of the roof frame engaging apertures in the uprights, Fig. 3 (not shown).
Patent GB-841439-A (GB)
Title: Improvements relating to sliding door mountings in motor vehicles
IPC: B60J5/06
Filed: 1957-11-29
Abstract: 841,439. Doors for passenger vehicles. DAIMLER-BENZ A.G. Nov. 29, 1957 [Dec. 5, 1956], No. 37292/57. Class 103(2). A vehicle sliding door 10 is carried at its lower part by a support bracket or brackets 19 hinged at 18 to a carrier member 16 provided with rollers 17, 17<SP>1</SP> slidable in a channelled guide 15 secured through rubber cushions 24, 26, to the outer face of a main longitudinal bearer 4 of the vehicle frame. The full line showing of the door corresponds to its closed position in which it is locked by members at its ends described with reference to Fig. 1 (not shown). When the door' is unlocked its upper edge may be swung outwardly of the vehicle about the hinge 18, to the dotted-line position, whereafter the carrier 16 may be slid along the channel 15 to the open position. The bracket or brackets 19 pass through a longitudinal slot in a shield member 11 for the guide 15 and carrier 16. The guide channel and shield are longer than the longitudinal bearer 4 and are disposed outside the outer faces of the vehicle wheels.
Patent GB-1404576-A (GB)
Title: Catalyst
IPC: B01J23/89
Filed: 1971-08-09
Abstract: 1404576 Nitrogen oxides JOHNSON MATTHEY & CO Ltd 7 Aug 1972 [9 Aug 1971] 37304/71 Heading C1A [Also in Division B1] An oxide of nitrogen is prepared by passing a mixture of ammonia and air through a first group of gauzes at least the surface of which is made from Ru, Rh, Pd, Os, Ir, or Pt, and then through a second group of gauzes at least the surface of which is made from a material containing a preponderant amount by weight of Fe, Ni or Co. The arrangment prevents loss of precious metal from the first group of gauzes. Thus 10 vol. per cent ammonia/air mixture is passed at 250 C. and 100 psig through a pad of 16 10% Rh/Pt gauzes followed by 24 austenitic stainless steel gauzes.
Patent GB-1217808-A (GB)
Title: Improvements relating to side windows of vehicles
IPC: B62D25/00
Filed: 1969-07-25
Abstract: 1,217,808. Vehicle bodies. DAIMLERBENZ A.G. 25 July, 1969 [16 Oct., 1968; 20 Nov., 1968], No. 37455/69. Heading B7B. The side window openings of a two- or fourdoor car have upwardly inclined lower edges 10, 11 so that the rear end of the forward opening is higher than the front end of the rear opening. The upper edges 18, 19 may be inclined downwardly towards the rear and the edges 16, 17 inclined forwardly at a smaller angle to the horizontal than the door edge.
Patent GB-943356-A (GB)
Title: Improvements in or relating to oxygenators
IPC: A61M1/32
Filed: 1961-10-19
Abstract: 943,356. Oxygenating blood. SVENSKA A.B. GASACCUMULATOR. Oct. 19, 1961 [Oct. 28, 1960], No. 37498/61. Heading A5R. A blood oxygenator comprises a rotatable liquid spreading surface 1 of spiral configuration disposed between terminal members 2, 3 in such a way that oxygen can flow between the turns of the spreading surface from the circumference towards the centre. The spreading surface comprises a perforate leaf 1 wound to form a double spiral and supported at each end by upper and lower terminal members 2, 3. Inlet and outlet cores 6, 7 surround the terminal members. The spreading surface is rotated about its axis by a pulley 9 attached to the outlet cone 7. Apertures 4 in the terminal members permit blood to pass to the spreading surface from the inlet cone 6 and to leave the spreading surface at its lower end. Oxygen enters an outer casing 8 between its ends through an inlet 10 and leaves the apparatus through larger apertures 5 in the upper terminal member and an outlet 11. The spreading surface may be made of stainless steel and have elongated perforations arranged in rows in the axial direction of the apparatus, the upper and lower edges of the spreading surface being folded to provide rims which space adjacent windings of the spiral and form the terminal members.