baber/WOPTO huggingface dataset:
Patent GB-801957-A (GB)
Title: Improvements in amplification systems using semiconductor devices
IPC: H03F1/44
Filed: 1955-09-30
Abstract: 801,957. Transistor gain control circuits. GENERAL ELECTRIC CO. Sept. 30, 1955 [Oct. 1, 1954], No. 27919/55. Class 40 (6). In a circuit comprising two complementary transistors 15, 50, Fig. 2, the D.C. potential appearing at the emitter of the second transistor 50 is used to control the current through and hence the gain of the first transistor 15. The circuit is described as applied to an I.F. amplifier 15, 16 feeding an amplitude-modulated wave detector 50 from which an audio output is derived at the collector. Alternatively, a frequency-modulated wave may be limited by the final transistor. Assuming an increase in the input signal, the emitter of transistor 50 is driven more positive and therefore reduces the effective collector potential of transistor 15 and thus its gain, Fig. 1 (not shown). In order to obtain the maximum gain control the amplifier stage 15 is operated at a reduced collector potential by connecting it to a lower battery voltage. The intermediate amplifier 16 may be of either conductivity type and the types of the transistors 15, 50 may be reversed, Fig. 3 (not shown). In a modification, Fig. 4 (not shown), the potential from the detector is applied to the base of the first transistor thereby reducing the emitter-base potential and therefore the current through it. In this case the resistor 33 may be omitted since the base is biased by the potential appearing across resistor 37 and the resistor 32 may also be omitted. The filter circuit 35, 29 may be replaced by one having two inductors and a capacitor, Fig. 5 (not shown).
Patent GB-338268-A (GB)
Title: A method of, and apparatus for, preventing damage by terrestrial electric radiations, and utilizing such radiations
IPC: A61N1/16
Filed: 1929-09-14
Abstract: 338,268. Pohl, G. F. von. Sept. 14, 1929. Protective arrangements.-A method of protection from terrestrial radiations, which may also be used for lightning protection, consists in screening buildings, &c., by a conducting screen . or screens k, shown in Fig. 2, underneath the building, and a conductor m is utilized to lead the radiated energy to a remote spot. Conductors shown in dotted lines, leading up the sides of the house, serve as lightning conductors.
Patent GB-381335-A (GB)
Title: Improvements in apparatus for the optical examination of transparent fluids or solids
IPC: G01N21/90
Filed: 1931-10-09
Abstract: 381,335. Turbidometers. HEYHOE, O. H., Ouida, Hospital Road, Bury St. Edmunds, Suffolk. Oct. 9, 1931, Nos.28050 and 33890. [Class 97 (iii).] A light-tight casing is divided by a partition 1 into two chambers 2, 3 and light from a source 4 in the chamber 2 passes through an aperture 1a in the partition 1 and through a container 6 for the material to be examined in the chamber 3, an adjustable eyepiece 7 or aperture being provided in the wall of the chamber 3 so that the material may be viewed at an angle to the rays of light passing through the container. A lens or prism 8 may be provided between the source 4 and aperture 1a and the latter may have an adjustable shutter 9. Coloured glasses may be placed in the aperture 1a or before the eyepiece 7.
Patent GB-191846-A (GB)
Title: A device for cleaning the inner opposed edges of the teeth
IPC: A61C15/00
Filed: 1921-10-24
Abstract: 191,846. Ballington, H. Oct. 24, 1921. Teeth-cleaning appliances.-In a device for cleaning the edges of the teeth comprising a strip or band of fabric, the band d, Fig. 2, is provided at its ends with loops e which engage the arms b of a frame formed of a single piece of wire. Alternatively the frame may comprise two members f, g, Fig. 3, connected by a nut h having right and left handed screw-thread engagement with the members f, g to adjust the tension of the strip d.
Patent GB-846084-A (GB)
Title: Improvements in or relating to instruments for detecting icing conditions
Inventor: CROUCHMAN ALAN JOHN
IPC: G01K1/02
Filed: 1955-10-04
Abstract: 846,084. Heating resistors. SANGAMO WESTON Ltd. Aug. 29, 1956 [Oct. 4, 1955], No. 28275/55. Class 39(3). [Also in Groups XX and XXXVIII] A thermometric device for detecting icing conditions on aircraft comprises a resistance wire 14 on a former 15 of anodised aluminium covered with a casing 12, on which is wound a heater wire 16. The latter is preferably insulated with a covering of woven glass impregnated with silicone varnish, and the whole is enclosed in a stainless steel tube 17 with which the heater is in good thermal contact. The tube 17 is preferably compressed after assembly to avoid any tendency to form hot spots.
Patent GB-897163-A (GB)
Title: New aminoalcohols and process for their manufacture
Filed: 1960-07-01
Abstract: The invention comprises compounds of the formula <FORM:0897163/IV (b)/1> in which X is alkylene of 2 to 6 carbon atoms of which at least two separate the oxygen and nitrogen atoms from each other, R1 is an oxypolyethyleneoxy-ethyl residue containing 2 to 10 ethyleneoxy residues and etherified with an alkanol of at most 6 carbon atoms, and R2 has one of the meanings given for R1 or is an alkyl residue of at most 6 carbon atoms; and salts thereof.  They may be prepared by reacting an amine HO-X-NH2 with a reactive ester, for example a halide or aryl sulphonic acid ester, of an alcohol R1-OH, and when the product is an alcohol of the formula HO-X-NH-R1, alkylating this. In Examples (1) triethyleneglycol monomethyl ether and thionyl chloride give methoxy-diethyleneoxy-ethyl chloride, this on heating with ethanolamine gives a mixture of N - (methoxy - diethyleneoxy - ethyl) - amino-ethanol and N,N - di - (methoxy - diethyleneoxy - ethyl) amino-ethanol, the first named of these is methylated at the nitrogen atom by heating the mixture with formic acid and formaldehyde, and the methylated product is separated from the second named product by extraction and fractional distillation; (2) methoxy-diethyleneoxyethyl chloride and ammonium hydroxide are heated in isopropanol to give methoxy-diethylene-oxy - ethylamine and di - (methoxy - diethylene - oxy - ethyl)-amine, the last named of which gives, with ethylene oxide, the second named product of (1); (3) gamma-aminopropanol replaces the aminoethanol of (1); (4) ethanolamine and the benzenesulphonic acid ester of hexaethyleneglycol monomethylether are heated together to give a mixture of N-(methoxy-pentaethyleneoxy-ethyl) - aminoethanol and N,N - di - (methoxy - pentaethyleneoxy-ethyl)-amino-ethanol, which is methylated and separated as in (1); and (5) nonaethyleneglycol monomethyl ether replaces the hexa compound of (4).
Patent GB-842330-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: HOLLINGS JOHN SHAW
IPC: G21C3/04
Filed: 1955-12-08
Abstract: 842,330. Nuclear reactors. ROLLS-ROYCE Ltd. Nov. 23, 1956 [Dec. 8, 1955], No. 28353/58. Divided out of 842,329. Drawings to Specification. Class 39(4). The subject-matter of this Specification is substantially the same as that described in Specification 842,329, but the claims differ.
Patent GB-279853-A (GB)
Title: Improvements in or relating to liquid spring contact thermometers
IPC: G01K5/38
Filed: 1927-10-25
Abstract: 279,853. P÷hlmann, C. Oct. 27, 1926, [Convention date]. Alarms operated by expansion of liquids or solids.-In a contact thermometer comprising a mercury reservoir 1, flexible pressure tube 2, and spring 4 operating the pointer 7 through a rod 5 and lever 6, make and break of circuit is arranged to occur in a liquid contact shut off from the air, to prevent sparking at the contacts. As shown in Fig. 2, the lever 6 is pivoted to trunnions 8, 9, and a pin 13 passing through the trunnion 9 supports a rotary mercury switch 10 in which contact is made or broken when the pointer 7 has moved the predetermined amount. The switch 10 can be set to desired position by a milled head 14 and is held in adjusted position by a spring 18 and notches on the head and pointer. In a modification, Fig. 3, the lever 6 is two-armed and is connected by links 19, 21 to a tipping mercury switch 10. A stud and slot connection 20, 23 allows adjustment of the switch. In another modification, the links 19, 21 operate a rotary mercury switch. In another modification, a tipping switch is operated by the lever 6 through toothed quadrants, which are disengaged for adjustment of the switch.
Patent GB-173343-A (GB)
Title: Improvements in and relating to adjustable wind screens
IPC: B60J1/04
Filed: 1920-10-06
Abstract: 173,343. Ransom, G. H. Oct. 6, 1920. Wind-screens.-In a wind-screen for vehicles of the type which is adjustable about an horizontal axis and clamped in any required position by friction devices co-operating with a hinge-pin of the construction described in Specification 135,587, the friction device consist of a series of alternating discs B, E, Fig. 1, of which the discs B are connected to the fixed supporting member A and the discs E to the hinge-pin S and screen frame F. Preferably, the support A is provided with a circular recess 0, Fig. 6, having grooves P which are engaged by projections R on the discs B, Fig. 8, while the hinge-pin S. has a squared portion V which engages correspondingly shaped holes in the discs E, but passes freely through enlarged central holes in the discs B. The channel frame F has a plain external surface in contact with the support A, and the hinge-pin S has a circular portion C rotatable in a corresponding bearing in the support A.
Patent GB-480458-A (GB)
Title: Improvements relating to electrical fuse-boards and other apparatus in which fuses are used
IPC: H01H85/62
Filed: 1936-10-19
Abstract: 480,458. Electric cut-outs. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., and HARRISON, B. G. Oct. 19, 1936, No. 28391. [Class 38 (i)] To shield or render dead the base contacts when a cartridge or other fuse carrier is removed the cartridge housing contains a spring- urged sleeve which on removal of the cartridge rises to cover one base contact and to disconnect its own connecting contact from the other. The invention is described as applied to the fuseholders and bases described in Specifications 468,894, [Group XXXVII], and 468,895. Within the housing a is the insulating sleeve f provided at its inner end with a contact f<2> serving to connect the cartridge terminal c<1> with the bus-bar b. The upper contact d is situated slightly below the top of the base. When the cap e is unscrewed to release the cartridge a spring g forces the sleeve upwards to cover the contact d and to disconnect from the bus-bar. An asbestos lining f<1> protects the contacts and quenches the arc when an unenclosed fuse is used in place of a cartridge fuse.
Patent GB-1253630-A (GB)
Title: Improvements in and relating to the surface treatment of stretched plastics films
IPC: C08J7/052
Filed: 1969-06-05
Abstract: 1,253,630. Surface treatment of oriented plastics films. KALLE A.G. 5 June, 1969 [6 June, 1968; 29 July, 1968], No. 28446/69. Heading B5B. [Also in Division B2] A process for treating the surface of stretched films made from polypropylene, a copolymer or blend derived from at least 60 weight per cent calculated on the total weight of polymer, of propylene or from a polyester especially polyethylene terephthalate, which comprises subjecting the film to a corona discharge in an atmosphere substantially consisting of nitrogen or carbon dioxide or a nitrogen/air mixture or carbon dioxide/air mixture containing up to 15% by volume of oxygen at a film temperature in the range from room temperature to 25 C. below the softening point of the stretched film. Thereafter a heat sealable coating which may be polyvinylidene chloride, low or high pressure polyethylene, P.V.C./P.V.A. copolymers, P.V.C. copolymers or mixtures thereof, may be applied to the film preferably as an aqueous dispersion. The base film may be biaxially stretched isotactic polypropylene, or polyethylene terephthalate. The corona discharge frequency may be in the range 1 to 100 Kilocycles per second. The treatment of the base film improves its adhesion with the heat sealable coating. The resulting film may be used for packaging.
Patent GB-1149802-A (GB)
Title: Improvements in or relating to soil cultivating implements
IPC: A01B33/02
Filed: 1967-06-20
Abstract: 1,149,802. Agricultural implements. C. VAN DER LELY N.V. 20 June, 1967 [8 July, 1966], No. 28520/67. Heading A1B. A soil cultivating implement comprises a plurality of mechanically driven rotatable soil cultivating members 42 and a plurality of tines 46 each tine being located between two adjacent members 42. As shown each member 42 is formed as a pair from a single piece of material and is mounted on a square shaft 41. A hood 39 is provided and pivoted to which is a smoothing member 54 which is adjustable. The tines 46 are pivotably mounted and are adjustable by means of a handle 47. The shaft 41 is driven from a gearbox 10 connected to the power shaft of a tractor. The working depth is adjusted by means of skids 64. In a modification the hood and member 54 are omitted and the tines 46 are rigidly attached to a frame member.
Patent GB-623004-A (GB)
Title: Air eliminating device for conduits or capacities containing liquids
IPC: F16K24/04
Filed: 1945-10-29
Abstract: 623,004. Fluid-actuated valves. SOC. OLAER MARINE. Oct. 29, 1945, Nos. 28554 and 28555. Convention dates, Nov. 14, 1941, and Jan. 9, 1942. [Class 135] [Also in Groups XXVIII and XXXIV] An air eliminating device for conduits or capacities containing liquids under pressure comprises a chamber 2 in open communication with the conduit or capacity, a chamber 3 in permanent but restricted communication with the first chamber, and a control device having a first working face 8 permanently subject to the pressure in the conduit or capacity and a second working face 9 subject to the pressure in the chamber 3 acting in opposition to that on the first working face so that any sudden increase in the liquid pressure acts on the control device to permit the air to escape until, due to the passage of liquid into it, the pressure rises sufficiently in the chamber 3 to balance that in the chamber 2. As shown in Fig. 1, the working faces comprise two diaphragms 8, 9 connected by a rod 10 passing with clearance through an orifice 6 in a conical partition 5. The partition 5 has a further orifice 7 to permit the return of liquid. The rod 10 is formed with a ported member 12, the passage 11 in which is controlled by a fixed valve member 4. In Fig. 2, the chambers 2, 3 are separated by a movable partition 13 with an inclined lower face into which open two channels 19, 20 connecting the chambers 2, 3. The partition 13 carries stem 17 having a valve 16 normally urged against a seat on a cover member 14 by a spring 18. In a further modification, the lift of the valve 16 is limited by a screw.
Patent GB-322579-A (GB)
Title: Improvements in telephonic loud speakers
IPC: H04R7/20
Filed: 1928-10-05
Abstract: 322,579. Shannon, D. S. B. Oct. 5, 1928. L o u d - speakers; magnetic instruments; diaphragms. -The compound diaphragm of a loudspeaker comprising a flat vibratory member or disc carried by or closing the front of a hollow cone or dished member, is flexibly mounted. A flat paper disc 8, Fig. 1, closes the front of a paper cone 1 mounted on flexible material 4 attached to a wooden rim 5 secured to a baffle board 6 or other support. The paper disc 8 may be flexibly supported by an extension 9 of the central pole piece 10 passing through a central hole in the disc and may be stiffened by radial arms. The actuating coil 2 attached to the cone 1 is centred by strings 12, Fig. 3, attached to clamping screws 13. Supports 7 are attached to the rim 5 and the outer pole piece 3.
Patent GB-996818-A (GB)
Title: Fuel oils
Inventor: PRESTON WILLIAM JOHN
IPC: C10L1/10
Filed: 1963-07-19
Abstract: A fuel oil contains a fluid composition comprising colloidally dispersed silica which has been produced by the process described and claimed in the parent Specification.  In an example, the fluid composition added to a fuel oil comprises silica, polyethylene glycol distearate and light mineral oil. The mineral oil may be replaced by vegetable or animal oil, toluene, xylene, octane, decane, white spirit, trichloroethylene or carbon tetrachloride.
Patent GB-444968-A (GB)
Title: Improvements in and relating to the manufacture of cellulose ester compositions
IPC: C08L1/10
Filed: 1934-10-08
Abstract: Cellulose esters of organic acids are dispersed in a solvent medium which is also capable of swelling the cellulosic filler and/or is capable of combining chemically with the inorganic filler used. Examples of such dispensing agents are solutions of halides or thiocyanates of metals belonging to Groups 1, 2 or 3 of the Periodic Classification, in water, aqueous alcohol, organic acids or their anhydrides.  As suitable cellulosic fillers cotton cellulose, lignocelluloses, wood products, and cork are mentioned, while suitable inorganic fillers are oxides of zinc, magnesium or calcium, cement, and plaster of Paris.  The compositions may be formed into sheets, rods, tubes, and the like. In an example, cellulose acetate is dispersed in a solution of zinc chloride and mixed with zinc oxide.  The composition is pressed into sheets which are heated, washed, and treated with solutions of fireproofing agents.  When a highly polished surface is required, the sheet is dipped into a mixture of acetone, methylated spirit, methyl glycol and triacetin, dried and hot pressed between polished nickel plates.  In another example, cellulose acetate is dispersed in a solution of zinc chloride and mixed with fine sawdust which has been digested with a solution of zinc chloride.  Zinc oxide is then mixed in and the product treated as in the first example or rolled into thin sheets which are laminated with layers of fibre or fabric.
Patent GB-170860-A (GB)
Title: Improvements in boat-construction
IPC: B63B3/00
Filed: 1921-10-29
Abstract: 170,860. Sch÷ffler & Alsleben. Oct. 30, 1920, [Convention date]. No Patent granted (Sealing fee not paid). Planks.-In a carvel-built boat the abutting strakes a are secured by transverse dowels &c. b. The edges of the strakes may be formed with round tongues c<1> engaging with grooves c.
Patent GB-1535920-A (GB)
Title: System for and a method of detecting irregularities in a fluid-carrying pipeline
IPC: G01M3/28
Filed: 1975-11-24
Abstract: 1535920 Monitoring fluid pipe-lines SHAFER VALVE CO 24 Nov 1975 [9 Dec 1974] 28804/78 Divided out of 1535918 Heading G1N The subject-matter is as that in Specification 1535918 but the claims relate to the monitoring of the rate of change of a parameter, e.g. pressure, over a predetermined timed period.
Patent GB-1071017-A (GB)
Title: Process for producing biologically active compositions
IPC: A61K9/14
Filed: 1965-07-07
Abstract: A stable, edible, biologically active composition is prepared by incorporating the active material into ice-cream or sherbet ice at a temperature not substantially exceeding 0 DEG C. and lowering the temperature of the mixture by at least 10 DEG C.  Numerous active materials are mentioned including vitamins, enzymes, hormones, muscular tissue, internal organs and glands, e.g. liver, kidney, heart, spleen, lung, pancreas, thyroid and pituitary.  A comminuted bone material obtained from the bones of young calves, lambs and piglets by freeing the bone from cartilage and soft tissue and subjecting the coarsely comminuted bone to freezing at about -20 DEG C for 1-2 hours is specifically mentioned.  It is stated to be useful in treating bone fractures and the like.
Patent GB-965369-A (GB)
Title: Improvements in or relating to toys
IPC: A63H13/20
Filed: 1962-07-27
Abstract: 965,369. Toy roundabouts. S. MURRAY, [trading as TOY TRUMPET WORKSHOPS]. July 22, 1963 [July 27, 1962], No. 28914/62. Heading A6S. A toy roundabout comprises a member slidable on a centre post and suspended by cords whereby when the member is rotated about the centre post the cords wind round the centre post and lift said member, which when released spins in reverse direction and is lowered again. In the simplest form of the invention comprises a block or disc 3 supported by cords 6 on a centre post 1. In a second embodiment a bar 13 suspended by cords 16 supports a disc 18 by pillars 19. The bar 13 may then be rotated by spinning the disc 18 by means of the knob 23. The bar 13 or disc 3 normally returns to the original position, after a number of oscillations, by gravity but a spring may be employed.
Patent GB-1504057-A (GB)
Title: Infusion and transfusion apparatus
IPC: A61M5/14
Filed: 1975-07-09
Abstract: 1504057 Infusion - transfusion apparatus S HUSTED - ANDERSEN [trading as TRANSCODAN SVEN HUSTED - ANDERSEN] 9 July 1975 [13 July 1974 27 June 1975] 28951/75 Heading A5R An infusion and transfusion apparatus has a piercing needle with a fluid duct 1 and an aerating duct 2, the aerating duct being connected with an aperture 5 opening into open air via a valve 9, which comprises a valve member of elastic material and has a wall part 14 which tapers insection and abuts the aperture under inherent stress. The valve has an enlarged part 10 which separates a fluid chamber 13 from an air chamber 12. The outer surface 18 of the valve 9 is enlarged by appropriate shaping of wall section 15 so that the valve part 14 will open inwards readily on only small pressure excess from the outside to the inside. A further aperture may be provided opposite the lower portion of valve part 14 through which a needle may be inserted through part 14 for injection of liquids into the aerating duct, part 14 being self-sealing after removal of the needle.
Patent GB-1441717-A (GB)
Title: Coating apparatus
IPC: G03F7/16
Filed: 1974-07-01
Abstract: 1441717 Coating apparatus J A BLACK 1 July 1974 29013/74 Heading B2L Apparatus for applying a coating liquid, such as photosensitive emulsion, to a flexible sheet 16 mounted on a frame 18 comprises a spreader bar 20 which is traversed across the sheet 16 and a traversable positioning device 82 which acts on the side of the sheet remote from the spreader 'bar to position the sheet 16 relative to, and traverses the sheet 16 with, the spreader bar 20. As shown the frame 18 is secured by clips (62) (Fig. 2, not shown) to adjustable support frame members 44, 46 surmounting a curing apparatus 12 and the positioning device 82 is traversed by cables (172) (174) actuated by a motor in the housing 40. The flexible sheet is contacted from below by a roller 96 and wheels 140 of the device 82 and from above by wheels 142, 144 of the spreader bar, the latter being traversed by the device 82 through the agency of magnets 150, 154 mounted on the device 82 and spreader bar 20. The spreader bar 20 comprises an inclined trough 84 with longitudinal slots which can be closed or partially opened by a door 104 carried by members 106 which abut selected steps 128 of adjusters 120; and a spreading bar 131 with teeth 132 which contact the sheet 16 and an adjustable gate member 134 to control the final thickness of the viscous liquid coating medium.
Patent GB-1209673-A (GB)
Title: An improved fruit press
IPC: A47J19/02
Filed: 1968-06-18
Abstract: 1,209,673. Fruit juice extractor. BRAUN A.G. 18 June, 1968 [23 June, 1967], No. 29037/68. Heading A4C. A device for extracting juice from citrus fruit comprises a means for collecting small quantities of juice only. The half-fruit is pressed on to a rotating cone 3 situated on a spindle 2 driven by a motor assembly 1. The juice is collected in channel 9, which may be formed integrally with or be releasably attached, Fig. 2 (not shown), to the base of the press cone 3 by a screw thread. If a larger quantity of juice is required, the fruit is pressed into a removable cone 4 situated on cone 3 and which masks off juice collecting channel 9. The juice passes through a sieve 13 and is collected in container 5. The rim 10 of the juice channel 9 is used to centre the larger cone 4. The larger cone 4 may also be provided with a juice collecting channel. The motor is actuated when the fruit is depressed.