baber/WOPTO huggingface dataset:
Patent GB-1354274-A (GB)
Title: Polymerisation process
IPC: C07F7/18
Filed: 1970-07-15
Abstract: 1354274 Olefin polymerization catalyst; silicon compound IMPERIAL CHEMICAL INDUSTRIES Ltd 15 July 1971 [15 July 1970 23 April 1971] 34316/70 and 11010/71 Headings C3P and C3S Olefins are polymerized in the presence of a catalyst comprising (a) a solid compound of a transition metal, other than (c) below, (b) a trihydrocarbylaluminium or dihydrocarbylaluminium hydride, and (c) a reaction product of (i) a compound of formula MB 6-0 R 0  and (ii) a compound of formula H(X-A-Y), said reaction product normally having the formula MB m (X-A-Y) n R o  or derivatives thereof containing more than one M atom linked by at least one -NR<SP>1</SP>- or -O- said linkages replacing at least one B or R group on each M, where M is a Group IV element, B is -NR<SP>1</SP> 2  or -OR<SP>1</SP>, where R<SP>1</SP> is a methyl or ethyl group, X is O, S, NR or PR, R is a hydrocarbon group, A is a bivalent organic radical, Y is OR, SR, NR 2 , PR 2  or a heterocyclic ring, b is the valency of M o is 0 to 2, m is 0 to 3 and n is 1 to 4. In typical examples propylene is polymerized in the presence of (a) TiCl 3 , (b) Al(C 2 H 5 ) 3 , Al(n-C 3 H 7 ) 3  Al(i-C 4 H 9 ) 3  or Al(n-C 4 H 9 ) 3 , and (c) the reaction products Ti(NMe 2 ) 4 /Me 2 NCH 2  -CH 2 OH to give Ti(NMe 2 ) 2 (OCH 2 CH 2 NMe 2 ) 2  and [(Me 2 N-CH 2 CH 2 O) 2 (NMe 2 )Ti(NMe)] 2  n- Bu 2 Sn(NMe 2 ) 2  / Me 2 NCH 2 CH 2 OH to give n-Bu 2 Sn(NMe 2 )(OCH 2 CH 2 NMe 2 ) and [(Me 2 N.CH 2 CH 2 O)Bu 2 Sn] 2 NMe or n-Bu 2 Sn(OCH 2 CH 2 NMe 2 ) 2 , Sn(NMe 2 ) 4 /Me 2 N.C 2 H 4 OH to give (NMe 2 )Sn(OC 2 H 4 NMe 2 ) 3  or Sn(OC 2 H 4 NMe 2 ) 4 , Sn(MNe) 2  / CH 3 O.C 2 H 4 OH to give Sn(OC 2 H 4 OCH 3 ) 4 , Sn(NMe 2 ) 4 /Me 2 N.C 2 H 4 NH.Me to give Sn(NMe 2 ) 1 . 3 (NMe.C 2 H 4 .NMe 2 ) 2 . 7 , Sn(NMe 2 ) 4 /C 5 H 4 N.CH 2 OH to give Sn(OCH 2 C 5 H 4 N) 4  or Sn(NMe 2 ).(OCH 2 C 5 H 4 N) 3  and ([C 5 H 4 N.CH 2 O) 3 Sn] 2 NMe, Sn(NMe 2 ) 4 / C 4 H 7 O.CH 2 OH to give (C 4 H 7 O.CH 2 O) 4 Sn, Sn(NMe 2 ) 4  and 2 2 - dimethyl - 1,3 - dioxolane- 4-methanol are reacted to give products having one or two Sn-NMe-Sn linkages and also dioxolano-methoxy tin linkages Sn(NMe) 2 / NMe 2 .CH 2 CH 2 5H to give Sn(SCH 2 CH 2 NMe 2 ) 4  or Sn(NMe 2 ) 2 (SC 2 H 4 NMe 2 ) 2  and [(Me 2 N.C 2 H 4 S) 2 SnNMe] 2  and the product below. The silicon compound  (CH 3 ) 2 Si[OCH 2 CH 2 N(CH 3 ) 2 ] 2  is obtained by reacting (CH 3 ) 2 Si[N(CH 3 ) 2 ]- itself obtained from (CH 3 ) 2 SiCl 2  and LiN(CH 3 ) 2 - with (CH 3 ) 2 N.CH 2 CH 2 OH.
Patent GB-871594-A (GB)
Title: Improvements relating to the sealing of cathode ray tubes, thermionic valves and the like
Inventor: BERRIDGE GEORGE FREDERICK
IPC: H01J9/40
Filed: 1958-10-27
Abstract: 871,594. Discharge apparatus. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 30, 1959 [Oct. 27, 1958; July 23, 1959], Nos. 34340/58 and 25340/59. Class 39(1). In a cathode ray tube or thermionic valve wherein a glass exhaust tube extends from the centre of the pressed glass base and is encircled by a ring array of fins passing through the base, the exhaust tube is heated for sealing off short by a sleeve surrounding the exhaust tube and heated by an induction coil, the sleeve having a radially thin portion which extends in the annular space between the ring of fins and the exhaust tube. In one form, Fig. 1, the induction coil 7 heats carbon sleeve 6 which surrounds the 'exhaust tube 3. The cathode ray tube has a cap (not shown) through which the fins 4 pass and which accommodates the exhaust pipe. After the exhaust tube has been sealed off the pipe is annealed by the heat radiated from sleeve 6. In a modification, Fig. 2, a stainless steel sleeve 7 is supported by a refractory insulating member 12 grooved to hold the induction coil 7. Members 13, 15, 16 are also of refractory insulating material. 16<SP>1</SP> may be a single annular recess.
Patent GB-463538-A (GB)
Title: Improvements in or relating to catering hot plates
IPC: A47J27/13
Filed: 1936-12-16
Abstract: 463,538. Food - warming apparatus. GARDINER, W. T. Dec. 16, 1936, No. 34561. [Class 28 (i)] Pans, in which food is displayed and from which food is served, are supported in frames so as to cover a steam chest, and the frames are of different sizes to accommodate pans of different sizes so that the pans may be assembled as required. The frames d rest upon ledges c formed between the steam chest b and the counter a, and are formed with overlapping shoulders g at their adjacent edges to make the junctions of the frames steam-tight. The frames are recessed at f to facilitate removal of the pans. The frames may be of different widths and some may be subdivided by cross members to accommodate a number of small pans.
Patent GB-302350-A (GB)
IPC: F02D17/04
Filed: 1928-11-23
Abstract: 302,350. Maschinenfabrik Augsburg- N³rnberg Akt.-Ges. Dec. 15, 1927, [Convention date]. Regulating.-In two-stroke gas engines, the escape of gas when the engine stops or races is prevented by a valve in the gas pipe which is closed by the engine governor. Fig. 1 shows the valve 11 which is closed by a spring 16 when a catch 15 is released by means of a rod 3 connected by a lever 2 to the governor 1. The catch 15 is formed on a lever 8 acted on by a spring 9, and is tripped, when the engine stops, by means of a spring pawl 4 on the rod 3, and when the engine races, by a lever 19 and an arm 18 attached to the rod 3. When the valve 11 is opened by a handle 17 for starting, the end 14 of the valve stem engages the tail 4<a> of the pawl 4, so as to bring the pawl out of engagement with the bent end 7 of the lever 18, thus allowing the catch 15 to re-engage the end 14 and hold the valve open. In a modification, the catch 15 enages an arm on a three-way cock which controls the flow of oil pressure to a piston connected to the valve 11.
Patent GB-1504706-A (GB)
Title: Gas purification liquors
IPC: C07C7/11
Filed: 1975-08-05
Abstract: 1504706 Removing HIS from gases BRITISH GAS CORP 5 Aug 1975 [6 Aug 1974] 34616/74 Heading C1A A composition for absorbing H 2 S from gases and liquid hydrocarbons comprises an aqueous alkaline solution, e.g. pH 8À5-9À5) containing ions of a metal capable of exhibiting at least two valence states and a quinone of formula where A is an aryl or quinoid nucleus, X' and X<SP>2</SP> are OH when A is aryl or are the O atoms of the quinoid nucleus, R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are H or solubilizing groups, e.g. SO 3 H, OH, NO 2  or ONO, provided that when A is an anthracyl or anthraquinoid nucleus, not more than one of R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> is SO 3 H. The quinone may be p-benzoquinone, hydroquinone, H-bonded quinhydrones, 1,4 - naphthaquinone - 2 - SO 3 H, 1 - SO 3 H - 6 - NO 2  (or - 7 - NO 2 )anthraquinone or 1 - SO 3 H - 6 - OH (or -7 - OH) - anthraquinone. The metal ions may be derived from a vanadate, e.g. Na ammonium vanadate or Na orthovanadate, or a salt of Fe or Co, e.g. FeSO 4  or FeCl 3 . A chelating agent may be added. In operation, H 2 S is absorbed in the solution with formation of sulphur and reduction of the solution, which may be reoxidized after removal of the sulphur. Alternatively, reoxidation and sulphur removal may be effected simultaneously by blowing air through the used solution.
Patent GB-945127-A (GB)
Title: Method and apparatus for crushing cellular materials
IPC: D21B1/36
Filed: 1962-09-12
Abstract: 945,127. Disintegrating materials by explosive action. S. LEVINTON, K. J. KOEHLER, E. P. G. HARSANYI, H. SCHROPPE-ARNDT, and F. G. LIPPE. Sept. 12, 1962 [Sept. 16, 1961], No. 34788/62. Headings B1X and B2A. A method of disintegrating cellular materials capable of being poured comprises the steps of filling a plurality of pressure tanks successively with the material, closing each tank when filled, subjecting the material in each tank to a pressure and increasing said pressure in stages in accordance with the order at which the tanks are filled, and, when the material in each tank has reached the highest pressure stage, opening said tank and explosively ejecting the material from said tank into a receiver containing an atmospheric pressure. Apparatus for carrying out the method comprises a vessel 1 containing six pressure cylinders 2 each closed at its upper inlet 3 by a valve 3<SP>1</SP> and at its lower outlet by valve 4<SP>1</SP>. The cylinders are filled in order from a belt scale 5 by means of a rotatable hopper 6 and are pressurized in the same order by means of compressed air supplied through pipe lines 16, 17, the pressure being increased in stages in accordance with the order in which the cylinders are filled. When a cylinder has reached the highest pressure stage, the valve 4<SP>1</SP> is opened and the material is thereby suddenly ejected into a receiver 20 containing a pressure not higher than atmospheric and strikes an impact grid 21 which crushes any cells which have not been disintegrated by the sudden pressure release. The receiver is surrounded by a coiled pipe 22 to permit the disintegrated material to beeither heated or cooled. The hopper is rotated by means of a geared disc 11 connected through gears 10 mounted on a shaft 9 with a ring gear 8 driven by a periodically operating electric motor 7. The valves 3<SP>1</SP>, 4<SP>1</SP> are opened and closed at the required times by means of gears 14 and 19 engaging spaced sets of gear teeth 15 and 18 on ring gears 13 and 8.
Patent GB-1319292-A (GB)
Title: Load-lifting apparatus including a load-lifting jack
IPC: B66F3/38
Filed: 1970-07-17
Abstract: 1319292 Hydraulic jacks G M KRAMP 17 July 1970 [18 July 1969 18 March 1970] 34896/70 Addition to 1165649 Heading F1D Lifting apparatus incorporating an hydraulic jack with a pump operated by a foot pedal 25 comprises a lifting part 2, with an initially adjustable lifting claw 54 to engage a load 64, and a basepart 1. Pivoted feet 57 can be turned about vertical axes under the load 64, after it has been lifted slightly, to give support beyond the perpendicular L from the point 63 of engagement of the claw 54 with the load 64. A prop 32, which can be folded up, is provided at the rear of the apparatus. Fig.8 (not shown) illustrates an embodiment wherein the pump is operated by a handle and the apparatus is provided with a pair of wheels.
Patent GB-759935-A (GB)
Title: A method for the production of medicaments from fresh placenta
IPC: A61K38/00
Filed: 1953-12-15
Abstract: A method of preparing injectable medicaments from comminuted fresh placenta which has been freed from blood, albumen and other impurities, comprises extracting the placenta with organic solvents non-miscible with water and having a dipole moment between 0,37 and 1,2 to liberate the aqueous colloid of the tissue cells, and in a manner known per se, separating, clarifying, sterilizing and if desired, concentrating the aqueous extract in a vacuum.  The placenta material is treated with about 10 per cent by weight of the organic solvent e.g. chloroform, toluene or ethane tetrachloride, for about 8 to 10 days at a temperature not exceeding 5 DEG C. and with constant shaking, after which the organ pulp is pressed off and may be further treated to remove the lipoids.
Patent GB-646177-A (GB)
Title: Improvements in severing devices for spring coiling machines
IPC: B21F3/06
Filed: 1947-12-31
Abstract: 646,177. Coiling, shearing. MERCER, G. H., and LABAN, W. H. Dec. 31, 1947, No. 34928. [Class 83 (iv)] Severing means in a wire spring making machine comprises a member, movable transversely of the wire for severing, driven by energy supplied from a fly-wheel having not more than one gear stage in the transmission mechanism connecting it to the member. The wire 1 fed by rolls 2, 3 is held down by a grooved resilient member 37 and passes under an adjustably fixed shear blade 15 to the coiling means A, B. A downwardly-sprung member 20 on a rod 23 is raised to shear the supply portion of the wire 1 against the blade 15 by a bell-crank 29 cam-driven from a shaft 11 rotated through worm-gearing from an auxiliary shaft carrying the fly-wheel. The shaft is variable-speed driven through a gear-box and variable ratio belting from an electric motor. The rod 23 is spring-loaded and is of adjustable length for setting the level of the shearing- member 20. A further cam 32a operates a bell-crank 33 to raise the bearing 34 of the upper roll 2 to stop the wire feed during shearing. Other cams on the shaft 11 control the pitching and coiling means A, B as described in Specification 646,176.
Patent GB-1394227-A (GB)
Title: Electrostatic filter
IPC: B03C3/155
Filed: 1972-07-26
Abstract: 1394227 Electrostatic precipitators BRAUN AG 26 July 1972 [28 July 1971] 34930/72 Heading B2J An electrostatic air filter comprises a housing 10 formed with an inlet grid 13 and discharge slits 15; a fan 11; a mechanical filter 14 for coarse dust, threads etc; charging electrodes 16; electrodes 1 and 3 connected to a high voltage d.c. source and forming a discharge channel for the air from fan 11; and a folded member 17 which is disposed in the electrostatic field between the electrodes 1 and 3 and which carries an active substance, e.g. potassium permanganate, sodium persulphate, activated carbon, kieselguzr, zeolithe, or a gel, to absorb or react with particles in the air undergoing treatment. The active substance may be carried by the electrodes 1 and 3 themselves. Thus each electrode may be in the form of a metal plate, a metallised plastics plate or a foil, preferably constituting a grid whose interstices are filled with the active substance, or a metallised fabric impregnated with the substance which may itself be conductive. The treated electrodes may be formed, by winding, into a cartridge and an embodiment using such constructions is described with reference to Figs 5 and 6 (not shown). The carrier member 17 may be of corrugated paper or fabric, and may include an auxiliary heating device. A humidifying device and a beater may be provided in the discharge channel of the filter.
Patent GB-413565-A (GB)
Title: Improvements in and relating to spring mattresses and like resilient bodies
IPC: A47C23/043
Filed: 1933-12-12
Abstract: 413,565. Spring upholstery. NEWBORN, J. T., and VI-SPRING PRODUCTS, Ltd., Victoria Road, Willesden Junction, London. Dec. 12, 1933, No. 34942. [Class 52 (iv).] Upholstery springs c having open end turns of substantially triangular form are used around the periphery of a spring assembly, the sides of the triangles forming the edge. The corners of the triangular turns are preferably distorted to form seatings for the connecting clips b.
Patent GB-980962-A (GB)
Title: A system for controlling the angular positions of two separate rotatable shafts
Inventor: MACKENZIE THOMAS HERBERT
IPC: G08C19/46
Filed: 1962-09-13
Abstract: 980,962. Electric correspondence control systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 26, 1963 [Sept. 13, 1962], No. 34983/62. Heading G1N. he gantry of a milling machine is moved by two rallel rack and pinion devices, each pinion 1, 2 (F 1) being driven by a power receiver selsyn 4 electrically connected to a transmitter selsyn 5. The ion shafts 3 are also coupled to the rotor of con@ selsyns 8, 8<SP>1</SP>. The stator of selsyn 8 has a 2-@ winding fed with sine and cosine signals to product a rotatable magnetic field: the 3-phase rot@ @ndings of selsyns 8, 8<SP>1</SP> are interconnected in such a way that the 1-phase stator winding of selsyn 8<SP>1</SP> produces a voltage representing the sum of the difference between the actual positions of shafts 3 and a desired position represented by the direction of the field in selsyn 8. This voltage is fed to motor 7 driving the transmitter selsyn 5, causing the shafts 3 to rotate until the voltage in the stator winding of selsyn 8<SP>1</SP> is reduced to zero. The mean position of the two shafts 3 is then consistent with the input signals to the stator windings of selsyn 8.
Patent GB-410434-A (GB)
Title: Improvements in or relating to flexible couplings
IPC: G03B19/18
Filed: 1933-12-12
Abstract: 410,434. Securing sprocket - wheels and gear-wheels on shafts. SOC. POUR L'EXLOITATION DES BREVETS, A. G. I., 88, Rue des Dames, Paris. Dec. 12, 1933, No. 34986. Convention date, Feb. 4. [Class 80 (ii).] A kinematograph film-sprocket 2, gearwheel or other element is flexibly driven from a shaft 1, on which it is loosely mounted, by means of coil-springs 8 arranged parallel to the shaft-axis with their ends in recesses 7, 9 in the sprocket 2 and in a head 5 screwed to the shaft. Two, four or other number of springs may be used and the friction between their closed coils produces a damping effect.
Patent GB-394653-A (GB)
Title: Improvements in attachments for the mouthpieces of telephone transmitters
IPC: H04R1/08
Filed: 1931-12-17
Abstract: 394,653. Mouthpiece attachments. GODAERT, W., 35, Rue d'Albanie, St.- Gilles, Brussels. Dec. 17, 1931, No. 34997. Convention date, Dec. 20, 1930. [Class 40 (iv).] A device adapted to be mounted in front of a telephone mouthpiece comprises a shallow open ended sound chamber 1, Fig. 2, formed of rigid material, such as sheet aluminium, and provided with perforated projections 3, 4 by which it is attached to the microphone. The chamber has a height of approximately 1À5 centimetres and is divided into two parts by a curved bridge 2. Fig. 3 shows a modification in which the chamber 8 is formed with a flared rim 9 shaped to fit the mouth of the user, the device being attached to the ordinary mouthpiece 1<1> by means of projections 21, 31, 41 and screws 51, 61, 71 so as to leave a space 10 between the chamber 8 and the mouthpiece 1<1>. Specification 15725/11, [Class 40 (iv), Telephones &c.], is referred to.
Patent GB-1066733-A (GB)
Title: Improvements in and relating to the synchronisation of television signals
Inventor: ANSTEY HAROLD GEORGE
IPC: H04N9/475
Filed: 1963-03-26
Abstract: 1,066,733. Television synchronization. BRITISH BROADCASTING CORPORATION. March 26, 1964 [March 26. 1963], No. 35030/66. Divided out of 1,006,732. Heading H3A. In arrangement for synchronizing television signals from one or more sources 11-14 with a master synchronizing pulse generator 10 at a central point comprises a synchronizing pulse generator at each source, a phase error detector 15-18 associated with each source at the central point to which the incoming synchronizing signal from the source and the output of the master signal generator are applied, means for combining the resulting error signal with a television signal which is transmitted to the source and means for extracting the error signal from the television signal and applying same to control the synchronizing generator at the source. The signals are combined by superimposing the error signal on the television signal during the frame blanking interval of the T.V. signal. Error signals for the different sources may be superimposed on different frame blanking pulses during the interval. In the case of colour television systems an error signal representing the phase error in the colour sub-carrier burst may also be transmitted by this method.
Patent GB-1094340-A (GB)
Title: Quick change sweeper broom
IPC: A46B13/00
Filed: 1965-08-16
Abstract: 1,094,340. Sweeping machines. WAYNE MANUFACTURING CO. Aug. 16, 1965 [Feb. 4, 1965], No. 35077/65. Heading E1G. [Also in Division F2] The rotary broom 21 of a street sweeping machine is detachably located and driven from a shaft 18 through two pairs 23, 24 of frustopyramidal bodies 25, 26, 29, 30. The broom shaft 18 is supported on two pivotted trailing arms 57, 62; the arm 57 being displaceable together with bearing 54, 34 to allow axial withdrawal of a splined sleeve 33 to which is welded the frusto-pyramidal body 29. The broom assembly comprising the bodies 30, 23 rigid with a drum 20 carrying the bristles may be withdrawn axially from engagement with the body 25 and flange 81 axially welded to a sleeve 41 axially located by the boss 42 of a driving sprocket 47.
Patent GB-299642-A (GB)
Title: Improved means of connecting electric conductors
IPC: H01R4/32
Filed: 1927-12-30
Abstract: 299,642. Fisher, H. J. Dec. 30, 1927. Binding - posts; direct connections between conductors. -A lead d is attached to an end-piece, pin, socket, &c. a by screwing a sleeve b on to or into the shank a<3> of the endpiece, a washer or other clamping member c being interposed to grip the lead, one or more slots b<2> being formed in the shank or sleeve. The lead enters a hole in the sleeve, and is spread in the slot or slots e. The clamp c may be a T-shaped member the projections c<2> of which enter the slots b<2> in the sleeve, and are pressed against the lead. The clamp c may be a washer formed as a disc with external projections or as a ring with internal projections or a cross bar. Any ordinary locking-means may be provided to secure the screws.
Patent GB-1433346-A (GB)
Title: Exhaust gas recirculation control device
IPC: F02M25/07
Filed: 1973-07-25
Abstract: 1433346 Recirculating exhaust gas in IC engines NISSAN MOTOR CO Ltd 25 July 1973 [26 July 1972] 35456/73 Heading F1B An exhaust gas recirculation control device for an I.C. engine having an intake manifold, an exhaust pipe and an exhaust gas recirculation pipe connecting the manifold to the exhaust pipe, the control device being operatively connected to the recirculation pipe and comprising an exhaust gas flow restrictor in the recirculation pipe, a flow control valve downstream of the restrictor, a pressure responsive membrane arranged to communicate with the recirculation pipe between the restrictor and the valve to respond to the pressure therebetween, the membrane being normally biased by a spring to cause the flow control valve to close, the stiffness of the spring being such that the valve begins to open when the pressure on the membrane exceeds a predetermined value and the valve opens gradually to provide an increasing ratio of recirculated exhaust gas to engine intake air, until the valve is fully open, the ratio then remaining constant regardless of further increase of pressure on the membrane. Exhaust gas at a pressure Pe flows along exhaust gas recirculation pipe 1, through a fixed orifice 2 into a chamber, the outlet from which is controlled by a valve 3. Downstream of the valve 3 the pipe leads to the intake manifold, which is at a pressure Pb. Valve-member 3 is attached to a diaphragm 5, one side 8 of which is open to the pressure P downstream of the orifice 2 and the other side of which is open to atmosphere. At low exhaust gas pressures a spring 6 holds the valve 3 closed and there is no recirculation of exhaust gas. As the engine load increases, pressure in the chamber 8 progressively opens valve 3 until the proportion of recirculated exhaust gas in the mixture supplied to the engine is about 18%. The size of the orifice 2 then prevents any further increase in the amount of gas recirculated. In a modification Fig. 4, the valve 3 is a butterfly valve, actuated by a diaphragm 5 responsive to intake manifold pressure, which acts on diaphragm 5 through a line 11, chamber 29, valve 13, chamber 27 and line 12. Chamber 27 has a vent 16 to atmosphere. Valve 13 opens progressively due to exhaust gas pressure, from pipe 17 via restrictor 2, acting on a diaphragm attached to the valve stem. When the valve has opened sufficiently for the intake manifold vacuum to overcome the effect of vent 16, the diaphragm 5 moves against spring 6 to open valve 3 progressively. In a further modification, Fig. 5 (not shown) a third diaphragm is attached to the valve 13 and acts as a damper to minimize the effect of pulsations of the pressure in the exhaust pipe.