baber/WOPTO huggingface dataset:
Patent GB-957950-A (GB)
Title: Improvements in photo-transistors
IPC: H01L29/73
Filed: 1960-09-08
Abstract: 957,950. Semi-conductor devices. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 8, 1960 [Sept. 11, 1959], No. 30983/60. Heading H1K. The Specification describes a photo transistor in which the distance from the area at which electron hole pairs are released, to the collector electrode is less than the emitter collector distance thus increasing the frequency limit of the device. In the embodiment of Fig. 1, indium emitter and collector electrodes 3a, 4a form a PN junction with N-type germanium 2. The emitter is situated above the collector but to one side of a step 2 on which incident radiation is received. In a further embodiment, Fig. 2, the N-type germanium is removed from the inside of the emitter ring electrode 3a and the radiation 5 is incident on the reduced thickness of germanium within the ring. Both embodiments may have a base electrode 6. In the case of Fig. 2, this electrode is of lead antimony. The " well " may be made by electrolytic etching in a KOH solution the remainder of the device being masked. The depth of the etching may be metered by applying a reverse voltage between the collector and base contacts to determine the depth of the depletion layer. Etching proceeds until a sudden current rise takes place in the circuit. The Specification refers to the use of gallium arsenide, antimony phosphide and A III B 5  compounds. The well may be made mechanically, the damaged semi-conductor being removed by slight etching.
Patent GB-210206-A (GB)
Title: Improvements in shutters or blinds comprised in educational appliances
IPC: A63J1/02
Filed: 1922-11-13
Abstract: 210,206. Stoloff, W. Nov. 13, 1922. Charts and diagrams. - An educational appliance of the kind permitting different parts of a line of characters or diagram on a board or sheet to be exhibited or concealed is constructed as a cabinet within which the sheet is supported and has in the front one or more openings provided with shutters. The shutters or blinds f for screening the opening e are made of accordion-pleated fabric having one edge g secured to the cabinet or frame and the opposite edge secured to a stiffening bar h movably held in guide grooves j in the cabinet. Each bar h is provided with a spring k holding it in adjusted position. The sheet d may be wound on rollers to exhibit required parts by handles c.
Patent GB-1509940-A (GB)
Title: Suspension arrangements for the body and engine in an automobile vehicle
IPC: B60G15/00
Filed: 1975-07-25
Abstract: 1509940 Motor vehicle engine mountings; suspensions AUTOMOBILES PEUGEOT and REGIE NATIONALE DES USINES RENAULT 25 July 1975 [7 Aug 1974] 31121/75 Headings B7H and B7D In a motor vehicle having a hydropneumatic front suspension units 107 each including lower and upper liquid-containing chambers 108, 109 communicating through flow-constricting damping means 111, and an engine 101 supported by rubber mountings 122, excessive movement of the engine 101 on its mountings 122 due to suspension shocks is prevented by arranging that each engine mounting 122 acts on the vehicle body through a variable volume liquid chamber 118 which communicates through a pipe 117 with the lower chamber 108 of the adjacent suspension unit 107. Each engine mounting 122 is secured to a plate 121 carried by a rod 120 fixed to a flexible diaphragm 119 forming the upper wall of the chamber 118. By suitably dimensioning the chamber 118 and inclining the axes of the engine mountings the vertical and angular accelerations produced by road shocks can be made equal for the body and the engine. In another embodiment, Fig. 2 (not shown), the variable volume chambers acts on the engine independently of its rubber mountings and are connected to the suspension units by way of a pipe through which fluid from a pump can be supplied to the units, an adjustable flow restriction being provided in the pipe between the variable volume chambers. In a further embodiment, Fig. 3 (not shown), upper and lower variable volume chambers provided at each engine mounting are connected by respective pipes to chambers below and above the damper pistons of strut-type suspension units.
Patent GB-871590-A (GB)
Title: Water soluble antilipemic salts of sulphated polysaccharides
IPC: C08B31/06
Filed: 1958-09-30
Abstract: The invention comprises a water-soluble salt of sulphated corn syrup solids or sulphated corn starch dextrin containing an average of 5-15 glucose units per molecule joined predominantly by alpha 1 : 4 and alpha 1 : 6 linkages and containing about 1,5-3 sulphate groups per glucose unit.  These products are made by sulphating corn syrup solids or corn starch dextrin containing an average of between 1 and 20 glucose units per molecule with chlorosulphonic acid in the presence of a pyridine base, such as pyridine, picolines or mixtures thereof, preferably under anhydrous conditions and at temperatures below 55 DEG C. for not more than 6 hours, forming a water-soluble salt, e.g. by neutralizing with sodium or potassium hydroxide, and precipitating a fraction of said salt containing an average of between 5 and 15 glucose units per molecule and between 1,5 and 3 sulphate groups per glucose unit.  Preferably the corn syrup solids or corn starch dextrin is fractionated either before or after sulphation, or both, so that the final product contains an average of between 5 and 15 glucose units per molecule.  After fractionation the sulphated product may be treated with a water-miscible neutral oxygen-containing organic liquid to precipitate the pyridine salt of the sulphated polysaccharide.  The latter is redissolved in water, neutralized with alkali and the alkali salt of the sulphated polysaccharide is precipitated by adding an alkanol of 1-3 carbon atoms or acetone, or an inorganic salt of the alkali, e.g. potassium chloride.  Alternatively the sulphated product is added to water, the quantity of which is calculated to produce a saturated solution of the inorganic salts formed on subsequent neutralization with the calculated quantity of alkali so that the alkali salt of the sulphated polysaccharide separates. Fractionation of the corn starch dextrins or corn syrup solids before sulphation may be effected by refluxing with a mixture of formamide and methanol, by using chromatography on a cellulose column or by dialysis.  Fractionation after sulphation may be effected with varying concentration of alcohols, or acetone, or salt solutions such as potassium chloride.
Patent GB-703699-A (GB)
Title: Method and apparatus for measuring thickness by ultrasonic waves
Inventor: HATFIELD PERCY
IPC: G01B17/02
Filed: 1950-12-22
Abstract: 703,699. Ultrasonic inspection devices. DUNLOP RUBBER CO., Ltd. Nov. 21, 1951 [Dec. 22, 1950], No. 31200/50. Drawings to Specification. Class 118 (2). The thickness of a section of material is measured by transmitting continuous ultrasonic waves through an accessible face thereof and determining the phase difference between the transmitted waves and the waves received after reflection at the remote surface. Separate transmitting and receiving piezo-electric crystal transducers are employed arranged side-byside in 'a common housing, the crystals being separated from each other by a metal diaphragm sandwiched between a pair of rubber pads to prevent electrical and acoustic interaction and being set to resonate at about 1 Kc/s from the operational frequency, e.g. 50 Kc/s, to reduce direct transmission between the crystals. The phase is measured by applying the input and output from the two crystals to the X and Y plates of a cathode-ray tube to produce Lissajous figures and phase ambiguities may be avoided by employing a second apparatus operating at a different frequency.
Patent GB-306496-A (GB)
Title: Improvements in and relating to sliding sash-windows
IPC: E05F11/00
Filed: 1927-11-22
Abstract: 306,496. Herring, R. Nov. 22, 1927. Window-holders for sliding sashes.-Sliding w i n d o w sashes are adapted to be retained in any adjusted position by springs such as k. housed in recesses in one or more of the vertical sash members and frictionally engaging the frame. The spring pressure is adjusted by bolts l engaging nuts n, fixed in the sash, rotatatble. by slotted ends and screwdriver.
Patent GB-1014296-A (GB)
Title: Gas lighter valve
IPC: F23Q2/52
Filed: 1962-08-16
Abstract: 1,014,296. Valves. MARUMAN CO. Ltd. Aug. 16, 1962 [Aug. 16, 1961], No. 31409/62. Heading F2V. [Also in Division F4] A burner valve mounted in the wall 29 of a fuel tank 28 of a liquefied gas cigarette lighter comprises a resilient valve member 9 having a central orifice 10 adapted to be compressed by a controller tube 17 abutting a movable valve member 11 to vary the size of the orifice 10. The resilient valve member 9 is made of synthetic rubber and seats on filter sheets 7 and 8 of felt or sponge in a recess 5 of a base part 4. The controller tube 17 screws into the valve body 1 and has a knob 22. An elastic packing 13 is disposed between an upper flange 12 on the movable member and the base part 4. A burner nozzle 20 extends through bores 19, 21 in the controller tube 17 and carries a packing 27 which seats on a bored projection 15 on the movable member 11 to form a stop valve. A spring 26 urges the stop valve to the closed position. A packing ring 25 seals the outside of the nozzle and a diametral gas passage 23<SP>1</SP> communicates with an axial gas passage 23 in the nozzle. In a modification, Fig. 3 (not shown), the resilient valve member seats on a washer supported in the base of the valve body, the movable valve member is in the form of a disc. In a modification, Fig. 4 (not shown), the spring urges the nozzle into the upper open position and the stop valve is closed by a cap on the lighter. Fig. 2 shows the valve of Fig. 1 mounted in the tank 29 of the lighter. The nozzle 20 is lifted by a forked end 4511 of a lever 45 having a fulcrum 46 and adapted to be depressed at 45<SP>1</SP> by a pusher 44 on a spring- returned fingerpiece 39. The pusher 44 is mounted on a slide 43 which can slide in a slot 42 in the fingerpiece 39 to move the pusher out of alignment with the lever end 45<SP>1</SP>. Teeth 41 on the fingerpiece engage teeth 34 fixed on a spindle 36 which supports the sparking wheel 35.
Patent GB-442912-A (GB)
Title: Improvements in plugs for breaking up concrete, or the like
IPC: B25D3/00
Filed: 1934-11-02
Abstract: 442,912. Chisels; percussive drills. HITCHEN, J., 18, Larch Avenue, Pemberton, Wigan, HAWKER, R., 14, Highfield Avenue, Cheadle Hulme, Cheshire, and FAIRCLOUGH, L. M., Edgewood, Blackrod, Lancashire. Nov. 2, 1934, No. 31435. [Class 61 (ii) and 124] A tool of rectangular cross-section for breaking up concrete has a quick taper at the point a, a slower taper at the intermediate part a<1> and a quick taper at the part a<2> below the shoulder above which extends the shank a<3> for fixing the tool in a pneumatic or other operating device.
Patent GB-300794-A (GB)
Title: Improved means for cutting belting
IPC: C14B5/04
Filed: 1927-11-23
Abstract: 300,794. Hartley, W. W., and Cockill & Sons, Ltd., H. r. Nov. 23, 1927. Guillotine machines.-In a hand-actuated machine for trimming the ends of driving belts, a cutter 16 is mounted on a slide 14 moved by cams 51 from a handle 61. The slide 14 and a crosssupport 19 for the driving gear are held by side guides 12, 23 secured to a base 7. The guide 23 is mounted on a pin 24 and can be hinged out of the way to allow of inserting a belt sideways. when the guide 23 is inoperative the knife carrier and the support 19 can be pivoted about the guide 12. In modfications the knife is actuated by cross-connected cams or toggles to give maximum pressure at the end of the stroke. In a further modification, Fig. 4 (not shown), a quick-release screw mechanism actuates the operating hand-lever.
Patent GB-1283634-A (GB)
Title: Improvements in or relating to platforms for deep-sea off-shore works
IPC: E02B17/02
Filed: 1970-06-30
Abstract: 1283634 Offshore structures SOC ENTREPOSE GTM POUR LES TRAVAUX PETROLIERS MARITIMES 30 June 1970 [30 June 1969] 31554/70 Heading E1H A platform comprises a deck 1 supported by towers 2, 3, 4 with braces 5 therebetween, each tower and each brace being a framed structure with a triangular cross-section and made of tubes. The bases of the towers are constituted by tanks 6, 7, 8, each of which has two compartments a, b provided with flooding and venting valves (not shown). When in transit the platform floats in a substantially horizontal position, Fig. 2, with the aid of the tanks 6, 7 and additional tanks 9, 10, the tower 4, tank 8 and two other tanks 11 thereon being above the water. At the site the tanks 6 .. 11 are flooded so as to bring the platform to rest on the subaqueous ground in a vertical attitude. The tanks 9, 10, 11 are then detached by rams 14 and removed. Air pressures in the compartments 6a, 7a and 6b, 7b are equalized during the flooding thereof by ducts (not shown). Piles may be driven through the substantially vertical tubes of each tower.
Patent GB-470224-A (GB)
Title: Improvements in trawling apparatus
IPC: A01K73/10
Filed: 1936-11-18
Abstract: 470,224. Signalling - cartridges and firing-means therefor. ATLANTIC COAST FISHERIES CO. Nov. 18, 1936, No. 31595. Convention date, Nov. 23, 1935. [Class 9 (ii)] [Also in Groups VI and XXXVIII] In trawl-fishing, the progressive filling of the net is indicated by signals propagated through the water and received at a remote point. The cod-end 12, Fig. 2, of the net terminates in a tapered part 13 and cylindrical end 14, the latter encompassed by spaced bands 15 which carry a detonator or blank cartridge exploded when the internal pressure reaches a predetermined amount. The bands 15, Fig. 5, are secured to a base 18 carrying a dashpot 23 with piston 26 and shackles 21, 24 to which are attached a rope 19 encircling the band 15. The piston 26 near its outer position engages the cranked end of a rod 46 which actuates a trigger 44, Fig. 8, releasing a hammer 40 to detonate the cartridge carried by a holder 31 in a housing 36. The hammer has a knurled top 51 for manual resetting. The band 15 may be dispensed with and the piston and cylinder of the dash-pot connected by ties to limit their separation. The signals are detected by a hydrophone connected to headphones, a loudspeaker, or a recording chart.
Patent GB-1100763-A (GB)
Title: Improvements in dry-cleaning machines
IPC: D06F43/08
Filed: 1965-07-23
Abstract: 1,100,763. Purifying solvents by distillation. P. A. J. CHARREAU. 23 July, 1965 [24 July, 1964], No. 31597/65. Heading B1B. [Also in Division D1] Dirty solvent is heated in a receptacle 1 by steam or hot water passing through a coil 10, warm air is passed through the top part of the receptacle by pipes 14 and 15, the redistilled vapours being entrained in the ejected air. Greasy residues are drained off through an orifice 3 and dirty solvent is passed through an orifice 2. An overflow pipe 9 is provided and a pneumatic stirrer 16. Inspection windows 6, 7 and 8 are provided.
Patent GB-537078-A (GB)
Title: Improved cork composition and method of making the same
IPC: C08L97/00
Filed: 1939-12-06
Abstract: 537,078. Synthetic resin compositions. CROWN CORK & SEAL CO., Inc. Dec. 6, 1939, No. 31614. Convention date, Feb. 25. [Class 2 (iii)] Cork compositions for the production of closures, gaskets &c. are prepared by reacting phenol and formaldehyde, to form an intermediate stage resin, in the presence of a glycol sufficient to maintain the resin free-flowing, coating cork particles with the resin and adding sufficient glycerine, either to the coated particles or to the solution, to act as a cork-softening agent, the composition being formed to shape and cured by heating. To ensure non-toxicity and freedom from odour, propylene glycol is preferably employed. A protein, e.g. casein; may be added during the resin-forming step to produce a non-shrinking product. The glycol may be added in two stages. Examples are given of the production of the resinous binder by condensing formaldehyde with phenol in the presence of caustic soda and of propylene glycol, with and without casein, the mixture being first heated to about 180‹F. until water is substantially removed and then further heated to 195-200‹F., the resin solution being cooled, thinned by the addition of further propylene glycol and used to coat a layer volume of cork particles ; after the particles have been uniformly coated glycerine is added together with a hardening agent, e.g. sodium hydroxide and the mixture placed in moulds and baked.
Patent GB-975825-A (GB)
Title: Improvements relating to an electric circuit breaker
Inventor: LLOYD-WILLIAMS HUGH
IPC: H01H33/32
Filed: 1959-09-16
Abstract: 975,825. Gas blast switches. LONDON ELECTRICITY BOARD, and H. LLOYDWILLIAMS. Dec. 16, 1960 [Sept. 16, 1959], No. 31618/59. Heading H2B. A pneumatically-operated interrupter comprises bridging contacts 25, 26 movable on insulated rails 16 into and out of engagement with a pair of fixed contacts 2, 3 each comprising three pairs of upstanding tongues arranged on three sides of a hollow square. Mounted between the bridging contacts is the gas actuating unit 32, 34. One end 32 is externally threaded to receive 34 and is formed with a blind bore 37 whilst the other end is internally threaded to receive a plug 41 and is formed with a blind bore 39, the two bores being joined by an aperture 43. Mounted in bore 39 is a piston 45 and rod 46 which normally extends from bore 37 to the end of bore 39. The piston is held in this position by a spring-retracted latch 53 itself retained by a latch 58. Separating the bores 37 and 39 is an aluminium diaphragm 49 held in place by a plug 48 which also holds a hollow needle 51 in place. A cylinder of gas contained in cylinder 34 is, when applied to cylinder 32, pierced by the hollow needle and the pressure obtaining in the cylinder 34 is indicated on a pressure indicator 63. When the latch 53 is tripped by an electromagnet 59 with the contacts closed, the diaphragm 49 is ruptured and the piston is forced by the gas pressure to the right, so engaging the base 4 between the fixed contacts and forcing the moving contacts to the left. When the piston has passed the ports 60 in the cylinder 32 the gas is ejected through them and extinguishes the arc and reacts against the fixed contact casing to force the contacts apart. Specification 767,205 is referred to.
Patent GB-1423693-A (GB)
Title: Feed device for feeding material to a machine
IPC: F16D49/20
Filed: 1973-07-03
Abstract: 1423693 Hydraulic motors G SPIANTINI and G BARDONI [trading as SICAP DI GIANCARLO SPIANTINI & C SNC] 3 July 1973 [4 July 1972] 31678/73 Heading F1A [Also in Division F2] A device for controllably feeding material to a machine e.g. a press, by means of a rotatable shaft comprises two pairs of diametrically opposed pistons 2 reciprocable in cylinders 3 to drive the shaft in the form of two half shafts 6A, 6B, interconnected by a torsion link and pins 50, a rotary valve 53 driven by the half shaft 6A to control  fluid supply to and exhaust from the cylinders and a fluid actuated brake having two half rings 63 surrounding the half shaft 6B and sprags 71 therebetween. The brake (see also Divison F2) is actuated by ingress of fluid to cylinders 67 via passages 68 to move pistons 66 which engage projections 64 on the ends of the half rings 63 and cause them to move towards each other against springs 69 which normally bias the rings 63 apart to allow rotation of the half shaft 6B. The valve 53 has a supply and exhaust passage 51, 52 respectively communicating with grooves 54, 55 which as the valve rotates sequentially communicate with passages 56-59 inclusive leading to the cylinders 3. To prevent excessive torsion on the half shaft 6B upon acuation of the brake, the passages 51 or 52 is throttled when fluid is delivered to the passages 68.
Patent GB-337583-A (GB)
Title: Improvements in or relating to storage cabinets or holders for cartons of circular cross-section
IPC: A47F1/08
Filed: 1929-10-18
Abstract: 337,583. Packs (1925), Ltd., and Cozens, L. Oct. 18, 1929. Contents, delivering; fittings, internal.-A storage cabinet for cartons of circular crosssection comprises one or more compartments for stacks of cartons each compartment having a yielding or expansible aperture in the base through which the cartons are withdrawn, and a separate compartment for carton lids which can be removed therefrom one at a time from outside the cabinet. As shown, the cabinet is divided into two compartments B, B<1> for the nested cartons C and the circular aperture at the base of each compartment is provided with a yielding annulus E of flexible or elastic material held in position by a retaining plate E<1> or with two similar segmental members F held in position by plates F'. Separate compartments G, J are provided for carton lids G<1> and sealing discs J<1>, the compartment G having a slot G<3> through which a lid G' can be removed by a finger opening H<1> and the compartment J having a sliding drawer J<2> by which the discs J<1> can be removed one at a time. The discharge apertures of the carton compartments may be provided with hinged flaps or with slidable members which move when a carton is to be withdrawn.
Patent GB-755597-A (GB)
Title: Improvements in or relating to the manufacture of crimped yarn and woven and knittedarticles made therefrom
IPC: D02G1/02
Filed: 1954-11-02
Abstract: 755,597. Crimping yarns. COUDENE, G. Nov. 2, 1954 [Nov. 4, 1953], No. 31715/54. Class 120 (3). In a crimping process, a filamentary polyamide yarn is highly twisted, e.g. to 4000 turns per metre, back-twisted to at least its initial degree of twist, and crimp developed therein by heat treatment, e.g. at a temperature of 140‹ C., while the yarn is substantially free from tension, e.g. when wound into hanks or on flexible supports, woven, or knitted into stockings or socks.
Patent GB-870032-A (GB)
Title: Improvements in or relating to signal transmission systems
IPC: H04B1/64
Filed: 1959-09-17
Abstract: 870,032. Companders. SIEMENS & HALSKE A.G. Sept. 17, 1959 [Sept. 17, 1958], No. 31764/59. Class 40 (4). At the transmitter of a transmission system a constant amplitude pilot signal from source P, Fig. 1, is passed to line over a compressor Pr and a hybrid G2 from which speech is fed back to Pr over a pilot rejecting filter F and rectifier G1; expansion being effected at the receiver by means of an expander D, Fig. 2, controlled by speech taken from hybrid G3 over pilot rejecting filter F and rectifier G1, and by means of a second compressor PR controlled by the pilot signal as extracted from hybrid G4, over pilot filter F1 and rectifier G1 1 . A filter Fll rejects the pilot from the receiver output. Compression and expansion in amplifiers Pr and D is affected in accordance with instantaneous speech values. Distortion of the pilot signal may be detected to monitor line conditions and supply automatic correction.
Patent GB-1103335-A (GB)
Title: Improvements in or relating to reduced scale model or toy wheeled vehicles
Inventor: GARDNER FRANK DAVID
IPC: A63H18/12
Filed: 1965-07-26
Abstract: 1,103,335. Toy vehicles. PLASTIC MANUFACTURING CORPORATION Ltd. 7 April, 1966 [26 July, 1965], No. 31802/65. Heading A6S. A method is given, of securing a shoe, which is used to receive current from a live rail, to the body of a toy vehicle. The shoe 42 is made of copper or brass and extends below the base of the vehicle so as to bear against a live rail set in a track. It is held in place by use of the stud 31 which is passed through a hole in the shoe and pressed in to a tight fitting hole in the base. A wire makes contact between the conducting stud and the electric motor. The stud receiving hole in the chassis must be surrounded by insulating material. It is also within the scope of the invention to have the stud as part of the body and the stud receiving member as a separate piece.