baber/WOPTO huggingface dataset:
Patent GB-1129393-A (GB)
Title: Tetrazolyl alkanoic acids
IPC: F23K3/14
Filed: 1966-12-06
Abstract: 1,129,393. Tetrazolylalkanoic acids. MILES LABORATORIES Inc. 6 Dec., 1966 [13 Dec., 1985], No. 54597/66. Heading C2C. Novel tetrazolyl alkanoic acids (and soluble salts thereof ) which are useful as anti-inflammatory agents and have the general formula wherein R 1  is an aryl or heterocyclic aryl radical, e.g. phenyl, halo- or alkoxy-substituted phenyl, furyl, pyridyl or thienyl, R 2  is hydrogen or an aryl or heterocyclic aryl radical, e.g. phenyl, halo- or alkoxy-substituted phenyl, furyl, pyridyl or thienyl, R 3  is hydrogen or an alkyl, aryl or heterocyclic aryl radical, e.g. phenyl, halo- or alkoxy-substituted. phenyl, furyl, pyridyl or thienyl, m is 0, 1 or 2 and n is 0, 1, 2 or 3, are prepared by the base catalysed alkylation of the corresponding 5-substituted tetrazole using as alkylating agent a compound which will substitute the tetrazole at the 2-position with the odesired carbolix acid side chain or a precursor thereof. Alkylating agents include halo esters and halo nitriles, necessitating hydrolysis as the final step in the preparation,  and #-propiolactone is used in the synthesis of tetrazolyl propionic acids. Sodium and potassium salts and several intermediate ethyl esters (obtained by the interaction of the appropriate 5-substituted-tetrazole and an ethyl ester, of a #-halo-acid in the presence of sodium ethoxide) of the tetrazolyl alkanoic acids are described and characterized.
Patent GB-1222829-A (GB)
Title: Improvements in or relating to welding a stay to spaced parts
Inventor: POTTER WILLIAM FRANK
IPC: B23K20/12
Filed: 1967-12-01
Abstract: 1,222,829. Welding by pressure and fusion. ROSE, DOWNS & THOMPSON Ltd. 25 Nov., 1968 [1 Dec., 1967], No. 54752/67. Heading B3R. In securing a metal stay to two spaced apart overlapped metal parts an end portion of the stay is passed through an opening in one of the parts so that the stay abuts the other part, the stay is rotated under axial pressure to friction weld to the other part and the stay is welded to the part having the opening therein. Two metal plates 1, 2, forming the double wall of an industrial cooker, in which double wall heated fluid is circulated, are spaced apart by a continuous metal spacer secured to the plates at their edges and are spaced apart in the space defined by the spacer by support stays. An opening 4 is provided in metal plate 1 and a cylindrical stud 5, Fig. 1, passed through the opening mounted in a chuck and rotated under pressure against the plate 2. The end 5<SP>1</SP> of the stud is thus friction welded to the plate 2 and then the stud welded by electric arc or gas welding to plate 1 to close the opening 4. The stud may have an enlarged head 6, Fig. 2, which is friction welded to the plate 1 simultaneously with the friction welding of end 5<SP>1</SP> plate 2. The studs shown in Figs. 1 and 2 may be of tubular rather than solid so that an internal surface may be gripped by the chuck. Increased pressure for upset may be applied in such cases.
Patent GB-1335187-A (GB)
Title: Pressure alternating device for automatic lung ventilator actuation
IPC: A61M16/20
Filed: 1970-11-20
Abstract: 1335187 Valves G FUMAGALLI 20 Nov 1970 [21 Nov 1969] 55251/70 Heading F2V [Also in Division A5] An actuator, for a lung ventilator having a variable pressure chamber (22), Fig. 1 (not shown), within which is an expandible bag (24) connected via non-return valves to a patient and to a breathing gas source, includes means for alternatingly subjecting the interior of said chamber (22) to positive and negative air pressure, said means comprising a duct 52, Fig. 2, for connecting an adjustable speed pumping assembly to chamber (22) and communicating with a venting valve Va, Fig. 4, having a valve member 112 movable against a biasing force' which decreases as the cross-sectional area of the valve opening 129 increases, to open the valve at a predetermined negative pressure in duct 52. The valve member 112, Fig. 4, has a valve seat 111 towards which it is biased by an electromagnet having a winding 125 and an adjustable core 126 acting on a ferrous disc 122 secured to a sealing diaphragm 119. The spaces above diaphragm 119 and below member 112 are vented to atmosphere and the space 113 therebetween communicates via a duct 116 with a duct 52. The core 126 is adjusted so that the biasing force on the member 112 varies according to the second power of the spacing of member 112 from seat 111 for attaining a nearly constant resistance to air flow through opening 129 at differing rates and speeds of flow.
Patent GB-1207338-A (GB)
Title: Internal combustion engine air filters
Inventor: BUCKMAN KENNETH ERNEST
IPC: F02M35/024
Filed: 1967-12-07
Abstract: 1,207,338. Air filter for I.C. engines. GEN- -ERAL MOTORS Ltd. 15 Nov., 1968 [7 Dec., 1967], No. 55634/67. Heading B1T. Plastics shells 2, 3 forming a filter housing have integral normally projecting continuous flanges 23, 24 providing spigots locating a tubular filter element 22; resilient seal rings 25 engage a side surface of each spigot. As described, the convex surface of each spigot is so engaged; but (Fig. 4, not shown) the concave surface may be engaged instead, each seal ring covering the whole of the element end surface and also having an annular bead engaging the shell base. In Fig. 2 the air inlet pipe 30 lies wholly within the housing, being press fitted in an inlet opening (31) of the housing and detachably secured to the base e.g. by press studs 33: thus inlet tubes of varying lengths may be fitted to provide appropriate noise-reducing "tuning", (see also Fig. 3, not shown). A reinforcing metal plate 20, and ribs 16, are provided.
Patent GB-1465905-A (GB)
Title: Ammonioamidates
IPC: C07C239/00
Filed: 1973-11-30
Abstract: 1465905 Curing epoxy resins; polyoxyalkylene compounds; acrylic monomers IMPERIAL CHEMICAL INDUSTRIES Ltd 14 Nov 1974 [30 Nov 1973] 55659/73 Headings C3B C3P and C3R [Also in Divisions C2 and D1] Example 32 discloses a textile-treating composition comprising an ammonio-amidate, an epoxy resin and water. Example 33 discloses curing the diglycidyl ether of glycerol with bis- (trimethylammonio-oxyformamidate or with N,N<SP>1</SP> - di(1 - pyridinio)hexamethylene bis- (oxyformamidate). Example 15 discloses polymerizing N-trimethylammonio - beta - acryloyloxyethoxyformamidate or copolymerizing the same with butylacrylate by heating the monomer(s) dissolved in carbon tetrachloride with α,α<SP>1</SP>-azodiisobutyronitrile. Example 11 discloses the preparation of N,N<SP>1</SP>- bis - (trimethylammonio)polyethanoxy - bis- (oxyformamidate) by (a) reacting the bischloroformate of polyethylene glycol with N,N- dimethylhydrazine (b) reacting the resulting hydrazide with methyl iodide and (c) heating the resulting quaternized hydrazide with potassium carbonate. Example 25 discloses the preparation of N,N-bis-(pyridinio)polyethoxyethane-bis-(oxyformamidate) by reacting the bischloroformate of polyethylene glycol, 1-aminopyridinium sulphate and potassium carbonate.
Patent GB-1268777-A (GB)
Title: Cellular structure
Inventor: KELLY JOHN CHARLES
IPC: G10K11/16
Filed: 1968-11-23
Abstract: 1,268,777. Laminates. ROLLS ROYCE Ltd. 10 Nov., 1969 [23 Nov., 1968], No. 55661/68. Heading B5N. [Also in Division E1] A sound absorptive structure comprises a first layer of cellular material, a porous layer supported on the first layer of cellular material, a second layer of cellular material supported on the porous layer and an impervious layer supported on the second cellular layer. The impervious layer may be of stainless steel, or a single layer of an elastic material, e.g. polyester resin, or a laminate having two elastic layers enclosing a viscous layer. The porous layer may comprise an impervious plate pierced with holes, a number of laminµ of glass fibre cloth bonded together, or a fibrous metal structure. The cellular layers may be of a stainless steel honeycomb. The impervious layer may be coated with a self-adhesive material on its surface facing the cellular layer.
Patent GB-1173150-A (GB)
Title: Improvements in Insulated Gate Field Effect Transistors
Inventor: DAS MUKUNDA BEHARI
IPC: H01L29/10
Filed: 1966-12-13
Abstract: 1,173,150. Transistor frequency changing and gain control circuits. ASSOCIATED SEMICONDUCTOR MFRS. Ltd. 13 Dec., 1966, No. 55813/66. Heading H3T. [Also in Division H1]  An insulated gate field effect transistor comprises source and drain regions of one conductivity type in a substrate of the opposite conductivity type, the channel region of the substrate having an impurity concentration which increases in the direction from drain to source; this permits close source drain spacing without giving rise to punch through. Circuits employing the transistor are described; one example (Fig. 6) comprises a mixer the input signal being applied to source electrode 11, a local oscillation to gate 14, the diffused region electrode 13 is earthed and the difference frequency is taken from drain 12. Another circuit (Fig. 7) relates to A.G.C., the input signal being applied to source 11 and the gain control signal to diffused region electrode 13, the gate 14 being earthed.
Patent GB-1498190-A (GB)
Title: Deflection circuit for television receiver set or the lik
IPC: H04N3/16
Filed: 1974-12-24
Abstract: 1498190 Deflection circuit NIPPON ELECTRIC CO Ltd 24 Dec 1974 [28 Dec 1973] 55882/74 Heading H3T A deflection circuit comprising a transistor amplifier whose input terminal is connected to a sawtooth source 1 and which supplies current to a deflection coil 6 and is fed from a source of power V cc  has a switching means 20 connected between the input of the amplifier to one terminal of the power source which enables the energy stored in the deflection coil to be released in the first half of the retrace time as a current through a transistor 4 of the amplifier. In the circuit shown the transistor is rendered conductive by current passing through the switch and the base-emitter path of 4 to the source of power. The transistor always operates in the normal polarity eliminating the need for the usual bi-directional device. The diode may be returned to a voltage (V cc2 , Fig. 5, not shown) different from that supplying the transistors V cc . If the main transistors are of the same NPN type (33<SP>1</SP>, 35, Fig. 5), a PNP transistor (34) is used in the switch; and if the biasing means (2), which may be a string of diodes, has a high impedance an auxiliary diode (31) may be used to pass the current. The switch may also be a transistor 55, Fig. 7, and may be applied to a single ended circuit in which a choke (43, Fig. 6, not shown), is used as a load. No transistor in the amplifier need withstand high voltage or be able to operate in the reverse direction and since the switch carries only base current it can be small and so facilitating integration.
Patent GB-1372222-A (GB)
Title: Method of making refractory articles
IPC: C04B35/632
Filed: 1971-12-02
Abstract: 1372222 Foundry moulding processes- PRECISION METALSMITHS Inc 2 Dec 1971 [2 Dec 1970 22 Feb 1971] 56014/71 Heading B3F [Also in Divisions B5 C3 and C1] A method of making a refractory core comprices mixing together a comminuted refractory material, a sublimable first binder and a non- sublimable second binder, forming a core from the mixture and subliming off the sublimable first binder. The porous core so-formed may be either fired or at least partially impregnated with an impregnating agent that is then hardened off. The comminuted refractory material may be fused or crystalline SiO 2 , Zr(SO 4 ) 2 , ZrO 2 , Al 2 O 3 , calcium zirconate, aluminium silicates, and Ca 3 (PO 4 ) 2 . The sublimable first binder may be paradichlorobenzene, urethene (ethyl carbamate), acetamide, naphthalene, benzoic acid, phthalic anhydride, camphor, anthracene, parachlorobenzaldehyde, 1-bromo-4-chlorobenzene, paradimethoxybenzene and crotonic acid. The non-sublimable second binder may be selected from hydrogenated rosin esters, polymerized rosins,petroleum hydrocarbon resins, coumaroneindene resins, ester gums, polyterpine resins, low molecular weight styrene polymer resins, chlorine polyphenyl resins, gilsonite, abietic acid, shellac, silicone resins, polystyrene, ethyl cellulose, polyvinyl acetate and polyvinyl alcohol. The specific moulding compositions are given in Division C3. The moulding mixture may be shaped by means of injection moulding, transfer moulding, extruding or by casting. The first binder is then sublimed off, preferably under reduced pressure, at room temperature or by heating. The porous cores so-formed may then be fired to 1600 F. to 2200 F. To eliminate the need for firing, the porous cores may be impregnated with colloidal type impregnants or solution-contained impregnants. The colloidaltype impregnants may be hydrolysed alkyl silicate, silica sols or dispersions and dispersions or suspensions of inorganic silicates and the solution-contained impregnants may be metal salts. The impregnant may be hardened by gelling, freezing or evaporation of solvent.
Patent GB-1376918-A (GB)
Title: Photographic cameras
IPC: G03B17/52
Filed: 1971-12-02
Abstract: 1376918 Collapsible cameras EASTMAN KODAK CO 2 Dec 1971 [2 Dec 1970] 56039/71 Heading G2A A camera which takes a generally rectangular film pack has a door 13 which carries the objective lens 15 at one end thereof, a bellows 18 forming a light-tight compartment between the door and the camera housing. -The lens is mounted on a sloped end portion 16 of the door, at the end opposite to the hinge 14 thereof. The bellows is of U-shaped profile with accordeon-pleated walls, seen best in Fig. 6 (not shown), and is permanently secured in a clamped-together position at one side 46. Thus the bellows opens in a fan-shaped manner. When the camera is in its fully open and operative position, as seen in Fig. 4, the lens 15 is in a fixed parallel relation to the photo-sensitive surface of the foremost film sheet in the film pack 26. A jointed strut having two legs 20, 21 is attached at one end to the door 13. At the other end a spring wire 22 bears against a pin 23 on leg 20 and maintains the strut either in its closed or open position. When closed, the film pack 26 is partially received in a recess 54 in door 13, and the collapsed bellows lies round it. This enables the overall thickness of the camera to be considerably reduced. The film pack comprises a number of units of the selfprocessing type, which are processed by pulling between pressure rollers 42, 43 to rupture a container of processing fluid. They are initially covered by a masking strip 32, which is first pulled away, drawing the first film unit into position.
Patent GB-1163959-A (GB)
Title: Skin Package
Inventor: FACE ROLLAND JUNIOR
IPC: B65D75/30
Filed: 1966-12-16
Abstract: 1,163,959. Skin packages. DOW CHEMICAL CO. 16 Dec., 1966 [27 Dec., 1965], No. 56439/66. Heading B8C. A package comprises a plurality of articles 16 contiguously arranged on a backing 12 and covered by a plastics skin 14 secured to the backing 12 so that a portion of each article 16 is lightly adhered by the tacky characteristic of the skin 14 in an individual pocket in the skin 14, the package further comprising a tear line 24 extending partially around the articles 16 in the curved area between the backing 12 and articles 16. When the package is opened by pushing on a perforated tear line 24 or pulling on a tear string around three of its sides, a hinge is formed along the remaining non-separated side so that the backing 12 serves as a book-type cover. Heat and pressure are applied to the skin 14 to draw it about the bottles 16 and seal it to the backing 12. The skin 14 may be heat or adhesively secured to the backing 12. Suitable skin 14 and backing 12 materials are disclosed.
Patent GB-1493579-A (GB)
Title: Aerators
IPC: B01F3/04
Filed: 1973-12-07
Abstract: 1493579 Aerating and agitating liquids AMES CROSTA Ltd 19 Feb 1975 [7 Dec 1973] 56961/73 Heading B1C An apparatus for the aeration or agitation of a standing body of liquid comprises a rotor rotatable about a horizontal or (as shown) a vertical axis having blades 20 and a driving element 15 disposed about the periphery of the rotor and acted on by an adjacent drive means 16; as shown, spur and ring gears. Alternatively the rotor might be driven by a belt or chain drive, a linear electric motor acting on a peripheral ring, the impact of a liquid jet on peripheral turbine-type blades sequentially operating hydraulic or pneumatic rams, or the reaction from air jets attached to the blades 20; in the last case the jets may also inject air with the liquid. The blades may be flat, curved or otherwise profiled. The apparatus may be a biological contacter.
Patent GB-1325715-A (GB)
Title: Bimetallic catalyst manufacture and use in ethylene oxidation
IPC: B01J23/52
Filed: 1970-12-07
Abstract: 1325715 Ethylene oxide ESSO RESEARCH & ENG CO 7 Dec 1970 [23 Dec 1969] 57947/70 Heading C2C [Also in Division C7] Ethylene oxide is obtained by the oxidation of ethylene with oxygen or an oxygen-containing gas in the presence of a bimetallic catalyst consisting of a major proportion (by weight) of silver and a minor proportion of one metal from Groups IB, IIIB at the iron sub group of Group VIII of the Periodic Table (Fisher Scientific Co 1953) and which is prepared by contacting a high surface area derivative of silver with an aqueous solution of a soluble salt of the second metal, drying the impregnated silver derivative, reducing it, and some barium peroxide may be added to the initial silver derivative to prevent wasting the reduced material. Some barium peroxide may be added to the initial silver derivative to prevent long-term deactivation of the catalyst. Examples describe the preparation of ethylene oxide using Ag/Au, Ag/Re, Ag/Cu, Ag/Mn, Ag/Fe and Ag/Ru catalysts.
Patent GB-1467644-A (GB)
Title: Pistons
IPC: F02B3/06
Filed: 1974-12-13
Abstract: 1467644 Pistons WELLWORTHY Ltd 13 Dec 1974 [18 Dec 1973] 58625/73 Heading F2T The basic alloy of the crown 2 of a light metal piston, e.g. from an indirect injection diesel engine, is protected from thermal erosion by a plug 8 of high thermal strength surrounded and supported by a layer 4 of lower conductivity and a thermal strength between that of the plug and that of the basic alloy. The plug 8 may be of austenitic steel or, with an insulating layer 4 of a ceramic material such as silicon nitride, of a more heat resistant material to stand the higher operating temperature. The layer 4 may be formed integrally with either the crown 2 or the plug 8, by welding or plasma arc spraying. Alternatively, it may be separated by a fibrous alumina-slicate sealing gasket from either or both of the crown or plug. The layer 4 may alternatively be of sintered or wrought aluminium alloy incorporating Fe, Mn or Co. A wrought alloy may also contain Cu, Ni and/or Mg. A more heat resistant layer 4 is of austenitic or creep resistant ferritic stainless steel or Co, Ni or Ti alloys.
Patent GB-1444600-A (GB)
Title: 1,3-bis-phenyl-2-trichloromethyl-imidazolidines and their use in pesticidal compositions
IPC: A01P7/04
Filed: 1973-12-20
Abstract: 1444600 1,3 - Bis - phenyl - 2 - trichloromethyl imidazolidines CELAMERCK GmbH & CO KG 20 Dec 1973 [23 Dec 1972] 59193/73 Heading C2C [Also in Division A5] 1,3 - Bis - phenyl - 2 - trichloromethylimidazolines of general formula where A<SP>1</SP> represents the group in which R 2 1 is halogen, nitro, C 1 -C 4  alkyl or alkoxy; and R 1 <SP>1</SP> is halogen, nitro, C 1 -C 4  alkyl or alkoxy or, where R 2 <SP>1</SP> is other than a 4-Cl-, 4-CH 3 -, 4-methoxy- or 4-nitro-group, a H atom; the said R 1 <SP>1</SP> and R 2 <SP>1</SP> groups being in the 3-, 4- or 5-positions, and acid addition salts thereof, are prepared by reacting a compound of general formula with Cl 3 C-CHO and, if desired, subsequently converting the compound obtained to an acid addition salt. In preferred compounds R 1  and R 2 , same or different, are each Cl or Br or C 1 -C 2  alkyl or alkoxy. Preferably R 1  is a 3- or 4-Cl atom or methyl group and R 2  is H, Cl or methyl. Amongst the examples 1,3-bis-(3-chlorophenyl)- 2 - trichloromethyl - imidazolidine and 1,3- bis - (4 - tolyl) - 2 - trichloromethyl - imidazolidine are prepared. N,N<SP>1</SP> - Bis - (3 - chlorophenyl)ethylenediamine is obtained by reaction of ethylene bromide and 3-chloroaniline. N,N<SP>1</SP> - Bis - (4 - tolyl) - ethylenediimine is prepared from glyoxal and p-toluidine. N,N<SP>1</SP> - Bis - (4 - tolyl) - ethylenediamine is obtained by hydrogenation of the diimine in the presence of a Raney-Ni catalyst.
Patent GB-1288400-A (GB)
IPC: F42C3/00
Filed: 1969-12-09
Abstract: 1288400 Inflatable lifejackets SAABSCANIAAB 9 Dec 1969 [9 Dec 1968] 60051/69 Heading B7U [Also in Division F4] The subject-matter is the same as that of Application 60000/69, with the additional feature of alternative hooded apertures 51. 52 in the casing wall.
Patent GB-1418044-A (GB)
Title: Gas discharge display devices
IPC: H01J11/12
Filed: 1972-12-29
Abstract: 1418044 Matrix displays FUJITSU Ltd 29 Dec 1972 [31 Dec 1971] 60201/72 Heading G5C In a display system comprising a panel having X conductors a, b, c connected sequentially to buses A, B, C, Y conductors covered by a dielectric layer and connected to a data source, a pattern is produced by varying the potential of the buses to produce a lateral discharge between adjacent X conductors and move it across the panel, applying appropriately timed pulses to selected Y conductors to produce vertical discharges between X and Y conductors as the lateral discharge moves across the panel thereby producing stored wall charges on the dielectric layer and applying sustaining pulses to the X and Y conductors which produce discharges only at those intersections with wall charges. The buses A, B, C are connected to drivers 11a, 11b, 11c having positive and negative portions with switches 5a, 5b, 5c which allow negative pulses to be supplied only during writing operations. On receipt of a write signal a one-shot multivibrator 17 supplies a pulse V g  to conductor S and pulse trains Vs/2, - Vs/2 to buses A and B. A discharge occurs between conductors S and A and then between A and B. Concurrently data pulses are applied to selected y conductors to produce vertical discharges at e.g. P. The process is repeated by applying the pulse trains to B and C with the polarity reversed. After completion of write in, a sustain voltage is applied by the preset output of flipflop 16 via OR gates 13, 23. The display panel comprises dielectric material over both conductor arrays and uses charge storage in the production of the lateral discharges, however the insulation on the X conductors may be dispensed with. To decrease interference along X electrodes walls, resistive strips or layers of material of low secondary emission may extend along the Y electrodes.
Patent GB-1218238-A (GB)
Title: Improvements in or relating to processes and devices for joining fabric strips
IPC: B29C65/48
Filed: 1968-12-19
Abstract: 1,218,238. Seaming non-metallic sheet material. SEMPERIT OSTERREICHISCH AMERIKANISCHE GUMMIWERKE A.G. 19 Dec., 1968 [20 Dec., 1967], No. 60297/68. Heading B5K. [Also in Division B8] A cut strip 1 of self-adherent material, e.g. rubberized fabric, is sucked by a suction device 5 on to the underside of the lower run of a conveyer belt 4, longitudinally movable in a direction parallel to the cut edge of the strip 1, and is moved by the belt 4 so that a predetermined overlap remains relative to the next strip to which the first strip is to be joined and which is fed by a conveyer 2. As shown, the strips 1 are cut by a bar 3 from a web and fed intermittently by a conveyer 2 under the belt 4 which is perforated and parallel to the bar 3. The bar 3 and the belt 4 are inclined relative to the conveyer 2. After a strip 1 has been fed by the conveyer 2, the lower run of the belt 4 is pressed downwardly on to the strip 1 by rollers 7 actuated by pistons (not shown). The device 5 sucks the strip on to the stationary belt 4. The rollers 7 are lifted and the belt 4 is moved until the edge of the strip overlaps slightly the side edge of the next strip. The cycle is repeated. The overlapping edges are pressed together by a roller 8.