baber/WOPTO huggingface dataset:
Patent GB-511356-A (GB)
Title: Improvements in and relating to vacuum-tight seals
IPC: H01J5/42
Filed: 1938-02-14
Abstract: 511,356. Uniting metal to ceramic materials by heat. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 14, 1938, No. 4570. Convention date, Feb. 17, 1937. [Class 36] A tubular lead through a ceramic body, such as the wall of an electric vacuum discharge apparatus, comprises two coaxial tubes sealed together directly or indirectly at one or both ends and having an annular space between them intermediate their ends, the interior of the inner tube being sealed by means of a ceramic member joined to it intermediate its ends and the outer tube being sealed intermediate its ends directly or indirectly to the ceramic body. In Fig. 1, the coaxial tubes 3 are joined at their ends to a main lead 6 inserted between them, the inner tube being sealed by soldering or fusing to the ceramic disc 2 and the outer tube being sealed to the ceramic body 1 which is also joined to the metal wall 7 by another tube 8. The annular spaces may be formed, as in Fig. 1, by expansion and contraction of the central parts of the tubes 3 or, as in Fig. 2, by recessing the main lead 6; alternatively, such spaces may be formed by the provision of flanges on the main lead or on the coaxial tubes at the sealing parts. Further, the tubes may be joined together or to the main lead indirectly, using packing rings or as shown in Fig. 3, the tubes 3 may be joined directly. The Specification as open to inspection under Sect. 91 states also that the annular spaces may be filled with solder or plaster. This subjectmatter does not appear in the Specification as accepted.
Patent GB-775428-A (GB)
Title: Improvements in or relating to apparatus for electric resistance welding
IPC: B23K11/30
Filed: 1954-02-16
Abstract: 775,428. Welding by pressure; making resistors. GENERAL ELECTRIC CO., Ltd., and DONELAN, J. A. April 19, 1955 [Feb. 16 1954], No. 4576/54. Classes 83 (2) and 83 (4). In apparatus for electric resistance welding having two electrodes, one of which is annular or part annular and at least partially surrounds the other, the electrodes have work-engaging surfaces which are wholly or partly formed by non-planar surfaces of revolution about a common axis. For welding a connecting wire 3 to a resistor body, one electrode is a rod 6 having an axial bore 7 for the shank of the wire 3 and is surrounded by an insulating bush 11 on which slides a spring-biased brass bush 10 to which the other electrode 8, a sleeve about the electrode 6 is secured. Flanges on the bush 11 limit the electrode movement. With the wire 3 in the electrode 6, the resistor ceramic body 1 coated with electrically resistive material and having metal end caps 2, 2, is supported in an anvil 13 and the electrodes 6, 8 are moved to bring a recess 9 in electrode 8 into contact with an end cap 2, further movement compressing the biasing spring 12 and causing the head 4 of wire 3 to press against the cap 2. Current is switched on preferably where the cap is deformed into contact with the body 1 and after it is switched off pressure is maintained for forging and during cooling. The electrode 8 may be carried on a resilient arm attached to but insulated from a part carrying the electrode 6 and may be of U or horseshoe shape.
Patent GB-433541-A (GB)
Title: Improvements in or relating to clutches for power driven vehicles
IPC: F16D41/08
Filed: 1934-02-12
Abstract: 433,541. Facilitating change of speed; free-wheel clutches. ZAHNRADFABRIK FRIEDRICHSHAFEN AKT.-GES., Friedrichshafen-on-Bodensee, Germany. Feb. 12, 1934, No. 4663. Convention date, Feb. 14, 1933. [Class 80 (ii)] In a tail clutch for the gear-box of a motorvehicle, controlled by a sleeve 19 splined on the gear-box shaft 12, a member 24, which is loaded by springs 29 and caused to rotate with the shaft 12 by pins 25, has conical surfaces 24<1> and 24<11> adapted to coact with conical surfaces 16<1> and 28<1> formed respectively in a drum 16 secured to the cardan shaft 18 and on a ring 28 formed on the control fork 20. The clutch shown comprises rollers 15 arranged between the drum 16 and a polygonal member 13 formed on the shaft 12. A disc 23 engaging helical splines 19<1> on the sleeve 19 has fingers 23<1> engaging between the rollers. Normally the fingers 23<1> are so located as to enable the clutch to provide bidirectional drive. On moving the sleeve 19 to the right, after disengaging the engine clutch, the disc 23 is turned so as to render the clutch unidirectional, and the surfaces 24<11>, 28<1> are engaged and the surfaces 16<1>, 24<1> disengaged. Thus the shaft 12 is braked. On returning the sleeve to the left, the surfaces 16<1>, 24<1> are engaged and the surfaces 24<11>, 28<1> disengaged, whereby the shaft 12 is speeded up before the clutch is again rendered bidirectional.
Patent GB-446602-A (GB)
Title: Improvements in and relating to band or ring-shaped magnetic cores
IPC: H01F41/02
Filed: 1935-02-13
Abstract: Alloys for loading-coil cores consist of 35 or 42 per cent of nickel, 9 per cent of copper, and the remainder iron.
Patent GB-702336-A (GB)
Title: Improvements in or relating to portable battery energised electric lamp equipment
IPC: F21L4/00
Filed: 1951-02-26
Abstract: 702,336. Batteries. EASTELL, E. L. Feb. 25 1952 [Feb. 26, 1951], No. 4686/51. Addition to 679,186. Class 53 [Also in Group XI] The life-saving jacket light described in the parent Specification is provided with a battery 1 having openings 6 7 for the entry of water to activate the battery, the openings being normally closed by tearoff strips 9, 8. The battery and strips are enclosed in a waterproof cover 11 formed by immersing the whole in a hot dip of thermoplastic material which also covers a part of the leads 2. When the strips 9, 8 are torn off the cover 11 is also broken to expose the openings 6, 7. The lamp casing 4 is provided with a button 5 for attachment to a garment.
Patent GB-921249-A (GB)
Title: Improvements in or relating to vulcanization of polymers and copolymers of epihalohydrin
IPC: C08L71/03
Filed: 1961-02-08
Abstract: Polymers and copolymers of an epihalohydrin having reduced specific viscosities of at least 0,25 as measured on a 0.1% solution in a -chloronaphthalene at 100 DEG C. are crosslinked by heating with a mixture consisting of (1) an amine and (2) sulphur and/or a thiazole. Suitable thiazoles are benzothiazole, 2-mercaptobenzothiazole, 2-methyl mercaptobenzothiazole, 2-ethyl benzothiazole and 2-benzothiazyl disulphide.  The amine may be a primary, secondary or tertiary, mono- or poly-amine.  A salt may be used accompanied by an alkaline material to form the free amine in situ.  Internal salts such as hexamethylene diamine carbamate may also be used.  Examples of amines are rosin amines and commercial mixtures thereof, phenyl-b -naphthylamine, aniline, alkylamines, triethanolamine, poly (2-methyl-5-vinyl pyridine), piperidine, piperazine, collidine, butidine, alkylene and arylene diamines, cycloalkyl amines, and o-hydroxybenzyl-N,N-dimethylamine.  Other additives may be added such as carbon black, zinc and magnesium oxides, fillers &c.  The polymers used in the examples are as follows: polyepichlorhydrins having R.S.V's of up to 9; polyepibromohydrin, R.S.V. of 0,25, prepared by polymerizing in heptane using a catalyst prepared by chelating triethylaluminium with acetylacetone and water; a copolymer of epichlorhydrin (90%) and epibromohydrin (10%); and a copolymer of 25% epichlorhydrin and 75% ethylene oxide.
Patent GB-930243-A (GB)
Title: Improvements in or relating to shrouds
Inventor: NUTTALL JOHN
IPC: A61G17/06
Filed: 1961-02-09
Abstract: 930,243. Shrouds. CO - OPERATIVE WHOLESALE SOCIETY Ltd. Feb. 9, 1962 [Feb. 9, 1961], No. 4790/61. Class 141. A shroud is made from polyvinyl chloride sheeting and is provided with sleeves at its upper end. Seams are made by heat sealing and tie tapes are provided along the edges of the shroud for tying up the corpse. The plastic sheeting may be embossed.
Patent GB-1023278-A (GB)
Title: Washing drum for a washing machine or a washing unit
IPC: D06F37/00
Filed: 1964-02-05
Abstract: 1,023,278. Washing machine drums. ALFALAVAL A B. Feb. 5, 1964, [Feb. 8, 1963], No.4857/64. Heading D1A A rotatable perforated washing machine drum is made of a ceramic material such as porcelain and may have integral lifters 35. One end wall 30 has an opening 29 and the other end wall 31 is adapted to be attached to a shaft 56 by means of plates 58, 59, Fig. 3 (not shown), which are positioned one on each side of the said wall. The plate 59 is rigidly attached to the shaft and is bolted to the plate 58 and wall 31 by bolts 62 integral with plate 58. Packing rings 60, 61 and a sleeve 57 of rubber are provided between the plates 58, 59 and shaft 56, and the end wall 31 of the drum.
Patent GB-756976-A (GB)
Title: Improvements in or relating to lubricating systems for gas-turbine engines
Inventor: ARMER CYRIL
IPC: F01D25/20
Filed: 1954-02-18
Abstract: 756,976. Lubricating systems. ROLLS-ROYCE, Ltd. Dec. 31, 1954 [Feb. 18, 1954], No. 4863/54. Class 12 (3). A lubricating system for a gas turbine engine, of the type in which the lubricating oil after use is not returned to the source of supply, comprises a source of oil under pressure, conduit means to convey the oil from the source to be distributed, a sharp-edged restrictor in the conduit, and heating means in part at least surrounding the conduit immediately upstream of the restrictor to heat the oil at least to a predetermined temperature above which the change in viscosity of the oil on change of temperature is small, whereby the change in the rate of flow of oil for a given pressure difference across the restrictor is maintained within desired narrow limits. As shown, the compressor of a gas turbine engine has a housing 15 in which is mounted a casing 18 which accommodates a centrifugal pump including an impeller 19. The impeller is driven through a shaft 28 which has an enlarged head 28a splined to engage parts of an oil distributer tube 29 rotatable with the compressor shaft 13b. The impeller has an inlet duct 20 extending from a fuel booster pump 21 and a delivery duct 22 leading to a throttle on the casing 18 and thence to a delivery duct 23 leading to fuel injectors in the engine combustion equipment. The booster pump 21 draws fuel from a tank 24 and is driven by a hydraulic motor 25 which is operated by fuel taken from the delivery of the pump 19 through a spill duct 26. The fuel in this duct heats lubricating oil as it flows from an oil reservoir 30 through a line 31 to the distributer tube 29. The line contains a restrictor 33 of the sharp-edged type. The oil in the reservoir 30 is kept under pressure by compressed air leading from the compressor through a pipe 34 and passing through a sharp-edged restrictor 35. A relief valve 36 is fitted in a branch 34a from the pipe 34 to maintain the pressure substantially constant in the oil tank 30. In a modification the oil is heated by compressed air instead of fuel. Specifications 735,874, [Group XXVI], and 745,213 is referred to.
Patent GB-268928-A (GB)
Title: A safety device for kneading, mixing and other analogous machines
IPC: A21C1/14
Filed: 1926-02-20
Abstract: 268,928. Morton, W. Feb. 20, 1926. Interconnecting guard with starting- gear in kneading, mixing, and like machines. In one form, the lid of the trough (not shown) carries on its hinge a pair of sectors 8, Fig. 2, adapted to coact with notches 5a, 6<a> in rotatable discs 5, 6, connected together by a link 7 and to the clutchactuating shaft 2 by a, link 4 and arm 3, the arrangement being such that the lid can be raised only if the clutch is out, and when so raised, the sectors 8 engage the notches to lock the shaft 2. The disc. 6 may be dispensed with, or may be directly linked to the shaft 2. In a modification, a notch 25, Figs. 3 and 4, in a disc 24, connected by a link 27 and arm 29 to the hinged lid 26, coacts with the flange 17 of a pivoted sector 16, which is coupled by links 14, 13 to a belt-fork 12, actuated by a pinion 20 and rack 22. When the belt is on the fast pulley 11, the disc 24 is locked with the lid 26 closed, while the belt is held on the loose pulley 10 when the lid is raised.
Patent GB-377596-A (GB)
Title: Improvements in metal pins for dental crown and like work
IPC: A61C5/35
Filed: 1932-02-19
Abstract: 377,596. Attachments for artificial teeth. TREBITSCH, H., 2, Stefansplatz, Vienna. Feb. 19, 1932, No. 4986. Convention date, May 8, 1931. [Class 81 (ii).] An attachment device for dental crowns &c. comprises a pin hav. ing a socket portion c and a tang a for insertion in the root canal of a tooth and a carrier pin d for the crown adapted for insertion in the socket.
Patent GB-707383-A (GB)
Title: Improvements in or relating to combined chain coal cutting and loading machines
Inventor: MACASKILL DONALD JOHN CHARLES
IPC: E21C27/02
Filed: 1950-02-27
Abstract: 707,383. Mining machines. COAL INDUSTRY (PATENTS), Ltd. May 25, 1951 (Feb. 27, 1950], No. 5018/50. Class 68(1) In a combined mineral cutting and loading machine of the type having one or more jibs 1, 2 each comprising a horizontal portion and a portion inclined to the horizontal, preferably at right angles thereto, about which universally connected pick-carrying chains circulate, there is provided rearwardly of the horizontal portion of the lowest jib an upwardly and rearwardly extending ripper conveyer 3 which feeds a transverse conveyer 9. The upper jib is mounted in a hydraulicallyoperated vertically-adjustable turret 11, whilst a ripper conveyer may be mounted at each end of the machine, the leading one being retracted clear of the face. British Specifications 590,694, 590,695 and 590,696 are referred to, the latter two only in the Provisional Specification.
Patent GB-558185-A (GB)
Title: An improved tobacco pipe
IPC: A24F1/00
Filed: 1942-04-16
Abstract: 558,185. Tobacco pipes. KING, C. P. April 16, 1942, No. 5032. [Class 130] The stem or mouthpiece of a pipe having a straight bore 3 is fitted with a rotatable valve plug 4 at right angles to the bore 3 and having a hole 5 adapted to register with the bore 3 for regulating or closing the smoke passage. A flange 6 on the plug is drawn on to a seating or recess in the pipe stem or in a metal or other bush 9 by a screw 7, and the flanged end of the plug has a fingerpiece 8 or a knurled or serrated surface to facilitate its adjustment. The plug may be of ebonite and the screw or the flanged end 6 may be fitted with felt or other washers.
Patent GB-671577-A (GB)
Title: Improvements in hot water magazine boilers
IPC: F24H1/26
Filed: 1950-02-28
Abstract: 671,577. Water-heating stoves. JANITOR BOILERS, Ltd., and RIDGLEY, G. A. Feb. 28, 1950, No. 5086/50. Class 126 In a magazine boiler a break draught damper at the base of the chimney is operated to open position by the opening of the magazine lid. As shown, Fig. 1, 6 is a pivoted magazine lid. Depending therefrom and pivoted thereto is a link 9 the remote end of which engages in a slot 10 formed by a rod 11 and a break draught flap 12. The flap, pivoted at 14, seals an opening in direct communication with the bottom of the chimney 5. A lug 15 upstanding from the boiler co-acts with a cam surface 16 formed on the link so that with complete closure of the lid, a pin 20 in the end of the link rests freely in the slot 10 with the flap 12 resting on its seating. An initial opening movement of the lid produces via the engagement of cam surface 16 and lug 15 a partial opening of flap 12. Subsequent opening movement of the lid draws the pin 20 along the slot 10 without any appreciable further opening of the flap but when the pin reaches the end of the slot further opening movements will give a direct lift to the link 9 to fully open the flap 12. The air flow to the combustion zone is controlled by an electromagnetically actuated damper 3, control of which is effected by the thermostat 21. A switch 17 in the electrical circuit and operated by the lid 6 ensures that when the lid is open the switch 17 is open thereby cutting off the electrical supply from the damper 3 and stopping the supply of primary air to the fire.
Patent GB-1165263-A (GB)
Title: Continous Casting Mould
Inventor: NISKOVSKIKH VITALY MAXIMOVICH
IPC: B22D11/041
Filed: 1967-02-02
Abstract: 1,165,263. Continuous casting. URALSKY ZAVOD TYAZHELOGO MASHINOSTROENIA IMENI S. ORDZHONIKIDZE. 2 Feb., 1967, No. 5117/67. Heading B3F. The internal surfaces of a mould are formed by replaceable copper plates 3, 4 glued to steel or cast iron walls 1, 2 to form (with grooves 7 in the walls) passages for coolant flow. The walls 1, 2 are connected together by bolts 5 with springs 6 for counteracting the thermal expansion differences between the walls and bolts. Reference has been directed by the Comptroller to Specification 910,695.
Patent GB-1241652-A (GB)
Title: Improvements in or relating to baths
Inventor: SIERANT STANLEY LESLIE
IPC: A47K3/12
Filed: 1967-06-17
Abstract: 1,241,652. Baths. S. L. SIERANT. 17 June, 1968 [17 June, 1967; 11 Aug., 1967; 20 March, 1968], Nos. 5240/71, 5241/71 and 5242/71. Divided out of 1,241,651. Heading A4N. A bath having two opposed ends and two opposed sides has a continuous internal protrusion 42, Fig. 1, around the inside wall and extending inwardly, with reference to an upper part of that wall, to provide a head rest at each end and an arm rest along each side, those portion of the protrusion providing the head rests extending inwardly from the wall further than those portions of the protrusion providing the arm rests. The height of the protrusion above the bottom of the bath is about one-third of the bath depth. Each headrest may have a central shallow depression (35), Fig. 4 (not shown) or may be padded with a washable or replaceable cushion. Duplicated outlet holes 48, 49, 54, 55, Fig. 3, and duplicated holes 50 to 53 for taps or hand grips are provided so that the bath is not handed. Perforated water supply tubes 45, 46 of the type disclosed and claimed in Specification 1,241,651 may be provided.
Patent GB-1492115-A (GB)
Title: Catalysts for use in and process for preparing acrylonitrile
IPC: B01J27/057
Filed: 1975-02-07
Abstract: 1492115 Acrylonitrile by catalytic ammoxidation of propylene NITTO CHEMICAL INDUSTRY CO Ltd 7 Feb 1975 [9 Feb 1974] 5263/75 Heading C2C [Also in Division B1] Acrylonitrile is prepared by reaction of propylene, oxygen and ammonia in the gas phase at 380-500 C. and a pressure of 1 atmosphere to 3 kg/cm<SP>2</SP> in the presence of a catalyst comprising an active composition of empirical formula Fe a Sb b Me c Te d Q e R f O g  wherein: Me is at least one of V, Mo and W; Q is at least one of Cu, Mg, Zn, La, Ce, Al, Cr, Mn, Co, Ni, Bi and Sn; R is at least one of P and B; a is 10; 15#b#60; 1#c#10; 0À5#d#10; 0À1#e# 10; 0#f#s; and g is a value to satisfy valency requirements, and wherein the Me and Te components are present substantially dissolved in an iron-antimony compound to form a solid solution and the composition has been calcined at 500-900 C. The ammoxidation feed may have a propylene to oxygen to ammonia molar ratio of 1 : 1 : 0À8 to 1 : 4 : 3.
Patent GB-397514-A (GB)
Title: Improvements in and relating to photographic sound records and systems for recording sounds on a light sensitive film
IPC: G11B7/00
Filed: 1932-02-22
Abstract: 397,514. Valve amplifying circuits. BRITISH ACOUSTIC FILMS, Ltd., Film House, Wardour Street, London. Feb. 22, 1932, No. 5299. Convention date, Feb. 26, 1931. [Class 40 (v).] Photographic soundrecords of the variable width or of the variable density - type and in which the position of the zero line of the sound trace in relation to the edge of the record track, or the average transparency, is displaced as the amplitude of the sounds recorded varies are so produced that the displacement of the zero line or the average transparency is varied more rapidly than the amplitudes as these increase. It is further provided that the "displacement" is effected more slowly than the amplitudes as these decrease.' A record so produced not only masks ground noises but avoids sudden changes in passing from reproduction to silence, and vice versa, owing to the zero line in the case of a varying width record being produced with the form o, Fig. 2. This result is attained by diverting and rectifying a portion of the microphone current being recorded and employing this to adjust the coefficients of conductivity in the electrical recording circuit whereby variations in the rectified current are effected more quickly when the current increases than when it decreases. In one arrangement the microphonic recording current influencing through a transformer T, Fig. 3, an oscillograph e or a recording light source has a portion diverted through a transformer T<1> to a rectifying valve S whose plate circuit includes a smoothing condenser u and a resistance t in parallel, a variable connection from the resistance passing to the grid of an amplifier V whose output is superposed on the recording current. The variation of the internal resistance of the valve S by the incoming current variations changes the time constants of the plate circuit during charging and discharging of the condenser, and by suitable selection of the values of the condenser u and resistance t in relation to the internal resistance of the valve S the shape of the curve representing the rectified current is modified so that variation of current due to a given increase in amplitude takes place more rapidly than variation due to a corresponding decrease in amplitude. This effect is superposed on the recording current to effect the corresponding displacement of the zero line or variation of average transparency. To avoid excessive time of discharge of the condenser, an inductance mav be inserted in series with the resistance t, or in series with the grid leak in the input circuit of the valve S. Specifications 377,675 and 384,333, [Group XXXVIII], are referred to.