baber/WOPTO huggingface dataset:
Patent GB-1447351-A (GB)
Title: Process for producing alkoxymethylene malonic acid esters
IPC: C07C69/708
Filed: 1975-05-21
Abstract: 1447351 Alkoxymethylene malonic acid esters DYNAMIT NOBEL AG 21 May 1975 [4 June 1974] 21995/75 Heading C2C Alkoxymethylene malonic acid esters are prepared by reacting a malonic acid ester with an orthoformic acid trialkyl ester in the presence of a carboxylic acid or anhydride and a Lewis acid. The trialkyl ester is in a proportion of at least 1-4 mols. per mol. of malonic acid ester and the by-product alcohol is removed from the reaction mixture. The carboxylic acid may be a mono- or di-carboxylic acid (1-5 C). Examples describe the preparation of ethoxy methylene malonic acid diethyl ester.
Patent GB-1348852-A (GB)
Title: Hydraulic system with an adjustable pump
IPC: F16H61/46
Filed: 1972-05-11
Abstract: 1348852 Hydrostatic transmissions ROBERT BOSCH GmbH 11 May 1972 [12 May 1971] 22082/72 Heading F2D In a hydrostatic transmission in which an adjustable pump 1 supplies a motor 5 through a line 4, an increase in pressure in line 4 above a set value causes a valve 8 to move against the action of a spring 25 (which fixes the set value) and so put a duct 9 into communication with the duct 4 (via ducts 21 and 24) which by applying pressure through a control device 10 having a throttle 11 in parallel with a piston 13 alters pump displacement to reduce the flow rate. The presence of the piston 13 with identical springs 14 and 15 on either side of it causes a greater initial adjustment of the pump than would otherwise be the case, the piston being displaced by the differential pressure across the throttle 11.
Patent GB-1221505-A (GB)
Title: Variable frequency oscillator
IPC: H03C3/24
Filed: 1969-05-01
Abstract: 1,221,505. Transistor oscillators. TELEFONAKTIEBOLAGET L. M. ERICSSON. ] May, 1969 [2 May, 1968], No. 22339/69. Heading H3T. An oscillator, whose frequency can be varied without increasing the harmonic distortion, comprises: an amplifier T1, T2 having one input and two outputs, with a high input impedance, and low output impedances, the amplification at the first output being one, and the amplification at the first output being one, and the amplification at the second being greater than one; a resistor R2 and two series connected capacitors Cl, C2 connected between the input and earth; and a connection via a resistor R<SP>1</SP>, from the junction between the capacitors to the second output and via a variable resistor R<SP>11</SP>, to the first output.
Patent GB-598126-A (GB)
Title: A reel for fly fishing
IPC: A01K89/01
Filed: 1945-08-30
Abstract: 598,126. Gearing for converting rotary into reciprocating motion. HUILLET, J. Aug. 30, 1945, No. 22370. [Class 80(iii)] [Also in Group VI] The spool 1 of a fishing-reel is reciprocated by the attachment of a spool shaft 5 with the last wheel 21 of a train of reduction gears 17, 18, 20, 21 which is driven by the handle. A peg 22 on the wheel engages the shaft in a slide 10. In a modification, a peg on the shaft engages an eccentric circular cam groove in the wheel.
Patent GB-471955-A (GB)
Title: Improvements in or relating to endless belt or band conveyors
IPC: B65G23/00
Filed: 1936-08-14
Abstract: 471,955. Endless-belt conveyers. SUTCLIFFE, Ltd., R., and SHEPPARD, J. Aug. 14, 1936, No. 22388. Addition to 397,970. [Class 78 (i)] The driving head described in the parent Specification is modified by forming a path for the belt between a plurality of jockey rollers and the main driving drum or drums in such a manner that the belt is nipped between the jockey rollers and the driving drum or drums, and the nipping force and the arc of contact between the drum or drums and the belt vary with the load on the belt. In one arrangement, two jockey rollers 9, Fig. 1, are mounted, one at each side of the driving drum 2, in horizontal guides 10, and the belt 5 is passed round them and a jib head drum 4 as shown. In another arrangement, two driving drums 2, Fig. 2, are provided and the jockey rollers 9 are mounted in inclined guides 10. Stems 9x, Fig. 3, may be provided on the bearings of the rollers 9 which bear against cams 11 on rock-shafts 12. Arms 13 on the shafts are connected by hooked links 14 to the opposite ends of a helical spring 15. This spring device for increasing the nipping force may be augmented, or replaced, by connecting the lower ends of the arms 13 by opposed links to a manually operated lever centrally pivoted to the frame 1.
Patent GB-901651-A (GB)
Title: Improvements relating to apparatus for detecting radio activity in a fluid
Inventor: CHICK DOUGLAS RICHARD
IPC: G01T1/22
Filed: 1959-06-30
Abstract: 901,651. Nuclear reactors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 10, 1960 [June 30, 1959], No. 22453/59. Drawings to Specification. Class 39 (4). Radiation detecting apparatus for a nuclear reactor having a fluid coolant in which Cherenkov radiation is produced and fluid-carrying ducting for carrying the coolant externally of the reactor, comprises one or more photo-electric devices mounted so as to respond to light radiation from the fluid flowing along the ducting adjacent the position at which the coolant leaves the reactor and means for detecting the electrical output from the photoelectric device. If the coolant is water or carbon dioxide the radioactivity of the coolant is mainly due to nitrogen 16, and this component can be measured by passing the output of the photo-electric device through an amplifier and pulse height discriminator to give a measure of the power developed in the reactor. Fission product concentration in the coolant may be determined by providing a second photo-electric device in the coolant circuit to measure the radioactivity of the coolant after a short delay ; the component of the second measurement due to nitrogen 16 can be eliminated by subtracting the output of the first measurement attenuated in accordance with the delay time between the two measurements which should be greater than 100 seconds.
Patent GB-473722-A (GB)
Title: A destructive distillation process for the manufacture of motor fuels
IPC: C10G1/00
Filed: 1936-08-14
Abstract: 473,722. Gaseous mixtures. NON- POISONOUS GAS HOLDING CO., Ltd. Aug. 14, 1936, No. 22488. Convention date, May 15. [Class 55 (ii)] In obtaining a gas substantially consisting of methane and hydrogen by subjecting water gas to catalysis, the water gas is obtained by gasefying the charcoal left as a residue from the destructive distillation of wood, peat, &c., the distillation and gasefication steps being carried out at relatively low temperatures of the order of 400-480‹ C. The distillation step of the process yields a liquid fuel in the form of tar, the final gas obtained being a gaseous fuel of calorific value of 7000 to 7500. A methane catalysis is used, preceded, if necessary, by a part removal of the carbon monoxide by catalysis with steam. The carbon dioxide present in the water gas, which increases the lower the gasefication temperature, may also be methanized by a similar reaction, namely CO2+4H2+CH4+2H2O, a temperature of 50‹ C. higher being necessary than in the case of the carbon monoxide methane catalysis. The steam obtained in the preliminary drying of the wood may be used in the gasefication step, or the water gas obtained from the latter may be utilized in the preliminary drying stage. The distillation and gasefication may be carried out in separate chambers. The initial material is impregnated with potash to facilitate the gasefication and after the latter step, the potash is preferably water extracted for re-use.
Patent GB-917248-A (GB)
Title: Pumping and screening installation for liquids entraining solid particles
IPC: B07B1/00
Filed: 1961-06-21
Abstract: 917,248. Filters. STAMICARBON N.V. June 21, 1961 [June 23, 1960; March 30, 1961], No. 22529/61. Class 46. [Also in Group XXVIII] Combined liquid raising and filtering apparatus for drawing liquid with entrained solids from a sump, e.g. in mines, comprises a vessel 4 in which the pressure is intermittently reduced, by passing compressed air through a nozzle 15, and a screen 2 provided beneath a flap-valve-controlled, gravity fed outlet 5 from vessel 4. The solids from screen 2 are removed by a conveyer 33 and the screened liquid passes to collection and storage tanks 3 and 27 from which it is withdrawn by a compressed-air-driven pump 28 controlled by a float-controlled valve 31. The compressed air supply to nozzle 15 is controlled by a float-operated valve 24 and timing device 12. In another embodiment the compressed air is supplied alternately to nozzle 15 and to vessel 4, thereby delivering the contents of vessel 4 under pressure to screen 2. Specifications 791,520, 791,857, 791,858 and 791,859 are referred to.
Patent GB-956040-A (GB)
Title: Apparatus for producing alternating current electric power
IPC: H02M1/22
Filed: 1961-06-22
Abstract: 956,040. Generators operating by electromagnetic interaction with fluids. AUCO CORPORATION. June 22, 1961 [Oct. 3, 1960], No. 22616/61. Heading H2A. Polyphase A.C. is derived from a magnetohydrodynamic generator by the mechanical commutation of electrodes 22-27, 32-37, spaced around duct 21. The interaction of flux B and plasma flow u produces a sinusoidal distribution of potential around the duct periphery and sequential commutation of opposed pairs of electrodes will thus produce a sinusoidally varying voltage. This voltage may be commutated by connecting the pairs of electrodes via slip rings to the corresponding diametrically opposed commutator segments and using pairs of angularly displaced brushes to pick-off the required polyphase A.C. The output frequency is determined by the rotational speed of the commutator assembly. Alternatively, the brushes may rotate around a stationary commutator. In further modifications the generator duct may rotate between the magnet poles so that each pair of electrodes produces an A.C. output at slip rings attached to the duct periphery, or the duct may be stationary while the magnet poles rotate.
Patent GB-1244145-A (GB)
Title: Lumilysergic acid derivatives
IPC: C07D457/04
Filed: 1970-05-11
Abstract: 1,244,145. Lumilisergic acid derivatives. SOC. FARMACEUTICI ITALIA. 11 May, 1970 [13 May, 1969], No. 22631/70. Heading C2C. ' Lumilisergic acid derivative of formula wherein R is C 1-4  alkyl, are prepared by treating lysergic acid with an alcohol ROH in the presence of an inorganic acid and irradiating with light.
Patent GB-1171724-A (GB)
Title: Electrical connector housing.
IPC: H01R13/74
Filed: 1968-05-13
Abstract: 1,171,724. Two-part couplings. AMP Inc. 13 May, 1968 [15 June, 1967], No. 22635/68. Heading H2E. A cylindrical, resilient, insulating electrical connector housing 1 is slotted to provide two resilient arms 5, each integral with a flap 10, and also comprises two diametrically opposite yokes 11, each comprising two arms 12 spaced from and integral with the housing 1 through radial projections 13 integral with ribs 14 and 15. The housing 1 is inserted upwardly through an aperture in a panel 4, being located centrally by the ribs 14 which engage the aperture edge. The flaps 10 spring out to engage the panel 4 which abuts the ribs 15 and bends the yoke 11 through a shoulder 16 which initially lies above the ribs 15. A complementary housing 9 is inserted into the housing 1, via chamfered tabs 6 on the arms 5; a tapered collar 8 locating in similarly shaped slots 7. The projections 13 may have slots (17, Fig. 4, not shown), to increase the resilience of the ribs 15 and yoke 11 to accommodate thicker panels.
Patent GB-1343150-A (GB)
Title: Production of tellurium dioxide
IPC: C01B19/00
Filed: 1971-04-19
Abstract: 1343150 Tellurium dioxide; glass batch materials EASTMAN KODAK CO 19 April 1971 [2 March 1970] 22690/71 Headings C1A and C1M TeO 2  is prepared by (a) reacting finely divided tellurium with 65-70% by wt. aqueous HNO 3  containing less than 5ppm. of Fe, the reaction mixture being agitated and heated to a temperature of 100-110 C. until evolution of NO 2  stops, (b) removing excess HNO 3  from the reaction mixture to leave solid TeO 2 , (c) washing the TeO 2  with water and then finally (d) drying the product, e.g. by heating at 90-150 C. The reaction mixture may be cooled to room temperature prior to removing the excess acid. The amount of HNO 3  used is preferably a 100-600% molar excess. TeO 2  with a Fe content of 10 ppm. can be prepared from Te metal having a Fe content of 50 ppm., and the product used for glasses of low colour and high R.I.
Patent GB-851224-A (GB)
Title: Adjustable propulsion nozzles
Inventor: HALL JOHN WALLACE
IPC: F02K1/12
Filed: 1957-07-17
Abstract: 851,224. Jet propulsion nozzles. DE HAVILLAND ENGINE CO. Ltd. July 7, 1958 [July 17, 1957], No. 22693/57. Class 110 (3). A jet propulsion nozzle comprising a fixed tubular nozzle portion and a series of circumferentially spaced adjustable petals arranged to be moved so as to vary the effective cross-section of the nozzle has at least two of the petals independently supported and positioned solely by a control element rigidly secured to each petal and lying on its outer side, each control element being guided by operating apparatus positioned outside the gas stream passing through the nozzle. A jet propulsion nozzle comprises a fixed tubular nozzle portion 10 of cylindrical or frusto-conical form, a series of circumferentially spaced adjustable petals 11 downstream thereof and a fixed rearwardly extending portion 12 leading to an exhaust orifice 13. Each petal 11 is connected to a pair of webs 14 the opposite edges 15, 16 of which are engaged by guide rollers 20, 21 rotatably supported by the casing 12. The petals 11 may be moved from a position parallel to the wall 12 to a position in which the petal forms a substantial angle with the wall by a screw jack 22. The jacks may be synchronised by gearing. The jacks may be of the pneumatic or hydraulic type. Resilient strips 14 bear against the webs 14 to prevent the escape of hot gas. A series of holes 25 on a layer of mica or asbestos may be proved in the webs to reduce the heat conduction. Two cooling gas ducts 27, 28 are also provided. The duct 27 is arranged to supply cooling gas to the passages 32 in the petals when they are in the open position. When the petals are in the closed position, the gases which are bled from the turbine, pass into the exhaust nozzles through spaces 36. Cooling air from the compressor or from a forward facing air intake passes through the duct 28 and maintains the chamber 19 containing the nozzle operating mechanism cool. A layer 37 of heat resisting material may also be provided. In a modification, Fig. 5 (not shown) there is no internal cooling of the petals and the webs 14 are of opposite hand. The webs 14 may be guided by rollers which engage the surfaces of longitudinal slots formed in the webs. The holes 25 may be replaced by a layer of heat insulating material such as mica or asbestos. Specification 851,225 is referred to.
Patent GB-173259-A (GB)
Title: Improved propellant and the process of producing same
IPC: C06B23/04
Filed: 1920-07-30
Abstract: 173,259. Marks, E. C. R., (Du Pont de Nemours & Co., E. I.). July 30, 1920. Explosives.-In order to reduce or prevent metallic fouling of gun barrels, tin dioxide or other derivative of tin with or without a lead derivative in finely subdivided form is disseminated through a mass of propellent explosive, preferably during the step of colloiding the nitrocellulose. Other usual ingredients such as diphenylamine, nitroglycerine, nitro compounds, and graphite may also be added. Specification 150,299 is referred to.
Patent GB-1428108-A (GB)
Title: Organo-metallic compounds
IPC: C07F5/06
Filed: 1972-05-15
Abstract: 1428108 Oxygen-bridged organometallic compounds IMPERIAL CHEMICAL INDUSTRIES Ltd 30 April 1973 [15 May 1972] 22713/72 Heading C2J [Also in Division C3] Novel organometallic compounds suitable as catalysts for the polymerization or copolymerization of olefinically unsaturated monomers contain in their molecule two or more metal atoms, linked together by one or more oxygen bridges, at least one of the metals being a transition metal of Group IVa of the Periodic Table having bonded thereto at least one hydrocarbyl or -CR 2 Z(R) 3  group (wherein Z denotes Si, Ge, Sn or Pb and R denotes H or a hydrocarbon radical) and at least one of the metals being a metal of Group IIIb or IVb of the Periodic Table having bonded thereto at least one hydrocarbyl oxide group or dihydrocarbyl amino group. For the purposes of defining such compounds Si is regarded as a metal. The compounds may be prepared by reacting together an appropriate transition metal compound and an appropriate metal hydrocarbyl oxide or a partially hydrolysed hydrocarbyloxy or hydrocarbylamino compound containing the appropriate metals in a liquid organic medium. Examples describe the preparation of (1) (2) mixtures of and (t.BuO) 2 Si[-OZr(CH 2 SiMe 3 ) 3 ] 2 , (3) (Eto) 3 SiOZr)#-allyl) 3 , (4) (PhCH 2 ) 2 Hf[O-Si(Ot.Bu) 3 ] 2 , (5) (Me 3 SiCH 2 ) 2 Hf[O-Si(Ot.Bu) 3 ] 2  and (6) PhCH 2 Hf[O-Si(Ot.Bu) 3 ] 3 . In further examples (7) ethylene is polymerized to polyethylene in presence of a catalyst formed from tetrakis (tert.-butoxy) siloxanediol and tetrakisbenzylzirconium IV, (8) as in (7) using as a catalyst a reaction product of and tetrakis (trimethylsilylmethyl) zirconium IV, (9) as in (7) using as a catalyst a reaction product of bromotris (#-allyl) zirconium IV and [(t.BuO) 2 SiOH] 2 O, (10) as in (7) using as a catalyst a reaction product of [(t.BuO) 2 SiOH] 2 O and tetrakisbenzyl hafnium IV, (11) as in (7) using as a catalyst a reaction product of tris- (tert. -butoxy)siloxysilanediol and tetrakisbenzylzirconium IV, (12) as in (7) using as a catalyst a reaction product of aluminium meso-tetraphenylporphyrin hydroxide (formed by reacting aluminiumtriethyl with meso-tetraphenylporphin followed by hydrolysis) and tetrakisbenylzirconium IV, (13) an ethylene/propylene mixture is polymerized using as a catalyst a reaction product of tetrakisbenzylizirconium IV and tetrakis(tert.-butoxy) siloxanediol, (14) as in (13) using a catalyst or reaction product of tetrakisbenzyl titanium IV and tetrakis(tert.- butoxy)siloxanediol, and (15) as in (13) using as catalyst a reaction product of tetrakisbenzylhafnium and silicon meso-tetraphenylporphyrin dihydroxide (formed by hydrolysing the reaction product of silicon tetrachloride and meso-tetraphenylporphin).
Patent GB-1506542-A (GB)
Title: Two-part suitcase frames of light metal
IPC: A45C13/36
Filed: 1976-06-02
Abstract: 1506542 Suitcase frames GOLD-PFEIL KOFFERFABRIK GmbH 2 June 1976 [3 June 1975] 22755/76 Heading A4G A two-part suitcase frame of light metal, e.g. rolled sheet aluminium, comprises a part, Fig. 1, intended to be secured to the suitcase body and a part, Fig. 2, intended to be secured to the suitcase lid, each part having a rolled over inner edge forming a tubular portion 2, and an adjacent squeezed fold 3, the outer edge 4 of one part, Fig. 1, having an L-section and the outer edge of the other part, Fig. 2, having a tubular portion 5, for co-operation with the L-section portion in use. The frame may be covered by a cover 6 and lining 7, and the part 4 may be of double thickness.
Patent GB-729707-A (GB)
Title: Improvements in and relating to a lever pallet for time-pieces
IPC: G04B15/14
Filed: 1953-08-18
Abstract: 729,707. Clocks and watches. ACCOLA. A., and VESTA SOC. ANON. Aug. 18, 1953 No. 22785/53. Class 139. A lever pallet 2 for a timepiece is provided with a groove 6, Fig. 1, across its impulse plane 4, said groove starting from the trailing plane 5 of the pallet and extending directly across the impulse plane towards the plane of rest 3. Oil, brought onto the trailing plane by an escape wheel tooth 7, returns through capillarity along the groove to the plane of rest 3. The groove may have a semi-circular or V-shaped crosssection and may vary gradually in depth and breadth. In one example, Fig. 4, the groove 11 ends before the plane of rest.
Patent GB-762326-A (GB)
Title: Butt-weld pipe manufacture
IPC: B21C37/083
Filed: 1954-08-05
Abstract: 762,326. Rotting mill plant; making pipes. SHARON TUBE CO. Aug. 5, 1954 [May 20, 1954], No. 22811/54. Classes 83 (2) and 83 (4). [Also in Group XII] In the continuous manufacture of butt-weld pipe, shelf coils are joined by a flash welder 6 giving a continuous strip 17 which is stored on edge in a loop storage zone 13 passed through a preheater tunnel 3 and a main furnace 2 (see Group XII), formed into welded lengths and discharged on to a cooling bed 37. From the welder 6 the strip traverses in turn a stripping device 7, pinch rolls 8, a conveyer 9, magnetic rolls 10, idler rolls 11 and vertical rolls 12. Pinch rolls 15 feed the strip through a tensioning device 18 to the furnace and after leaving the main furnace 2 it passes in turn through buttweld forming, welding and breakdown rolls 30, 31 and 32 respectively. A hot saw 33 cuts the finished pipe into desired lengths which traverse sizing rolls 34, a control device 35, and a discharge device which feeds the lengths onto the cooling bed 37.
Patent GB-1364333-A (GB)
Title: Two-part electrical coupling
IPC: H01R11/28
Filed: 1972-05-16
Abstract: 1364333 Battery terminals AMP Inc 16 May 1972 [9 June 1971 13 Jan 1972] 22822/72 Heading H1B [Also in Division H2] An electrical coupling comprises a meta  plate 16 having at least one flange, e.g. 18 to co-operate with an ear 4 on metal plate 2, and a detent 28 to co-operate with a hole 30. As shown, plate 16 has offset flanges 18 and 20 provided with resilient portions 22, and battery terminal 2 has offset ears 4 and 6. Projection 24 engages with guiding edge 27 of hole 26 and anticlockwise rotation of plate 16 engages the flanges with corresponding ears; portions 22 forcing the two parts together, until detent 28 engages hole 30 to prevent further rotation. In an alternative embodiment, detent means are provided by upstanding ribs (23, Fig. 3, not shown) on portions 22, and co-operating slots (29) in ears 4 and 6.
Patent GB-276163-A (GB)
Title: Brake for bicycles and the like
IPC: B62L1/14
Filed: 1926-09-16
Abstract: 276,163. Roblin, R., and Blake, V. Sept. 16, 1926. Brake mechanism for bicycles &c. comprises two clips g on the back or front fork a, leaf springs h attached to the clips and connected at their upper ends to U- shaped members i straddling the fork limbs a, rods j mounted inside the fork on the members i and provided at both ends with brake pads k formed of blocks or of series of discs of leather or other friction material, and links m pivoted to the other ends of the members i and to an arch member n, which is connected to the wire e of a Bowden &c. transmission. In a modification, the springs h are replaced by levers pivoted to the clips g, separate coil springs being interposed between screws wand the pivots connecting the members i to the links m. The wire e is connected to the arch n by a rod q engaging a loop at the end of the wire, the loop being passed through an aperture in the arch. The links m may be replaced either by two lengths of cable, connected to the arch n or to the ends of a transverse rod, or by a single length of cable passing over a pulley on the arch.
Patent GB-772975-A (GB)
Title: Improvements in or relating to an electromagnetic apparatus such as couplings, brakes and dynamometers
IPC: F16D37/02
Filed: 1955-08-09
Abstract: 772,975. Electromagnetic couplings. EATON MANUFACTURING CO. Aug. 9, 1955 [Aug. 24, 1954; Nov. 8, 1954], No. 22908/55. Class 35. In an electromagnetic device, e.g. clutch, brake, dynamometer and the like employing magnetic powder, the walls of the working air gap are protected from the abrasive magnetic powder by surface coating, case hardening or shielding of the said walls. The Figure shows a magnetic coupling wherein the air gap walls 36, 38 of the relatively rotatable members 12, 14 are protected from the abrasive action of the magnetic powder 30. Such protection may be afforded by applying a molebdenum spray coating to or by case hardening the said walls or by making the members 12, 14 of non-corrosive steel alloy. Reference has been directed by the Comptroller to Specifications 649,553, [Group XXXIV], 719,885 and 739,588.