baber/WOPTO huggingface dataset:
Patent GB-1391546-A (GB)
Title: Gas-cooling devices
IPC: F28D9/00
Filed: 1972-08-11
Abstract: 1391546 Tubular heat exchangers LINDE AG 11 Aug 1972 37501/72 Addition to 1208376 Heading F4S A heat exchanger for cooling gases comprises a plurality of parallel horizontal tubes defined by pairs of vertical sheets 6 each formed with co-operating semicylindrical corrugations, the tubes being enclosed in a jacket 1 provided with end flanges 4 each having an inwardly directed portion 4<SP>1</SP>. Gas to be cooled passes through the tubes and liquid cooling medium passes through the jacket around the tubes. The ends of the sheets are curved outwardly, adjacent curved edges being welded together in fluid tight manner eliminating the need for tube and plates. The outer edges 9 of these curved or bent sheets are cut away in stepped fashion and welded to the inwardly extending flange portion 4<SP>1</SP> the inner edge of which is correspondingly cut away and bent. The flange portion 4<SP>1</SP> can be stiffened by a rib 11. The lateral vertical sheet edges 12 are cut away in zigzag form and welded to the flange edges 14, which are suitably contoured, and to longitudinal ribs 13 which in turn are welded to the outer tubes. The flange edges 14 may be strengthened by longitudinal reinforcing ribs 15 and 17, the lowest rib 15 being joined to the jacket by a further rib 16.
Patent GB-1467190-A (GB)
Title: Sizing of yarns containing cellulose fibres
IPC: D06M15/263
Filed: 1974-08-28
Abstract: 1467190 Textile lubricants KANEBO Ltd 28 Aug 1974 [29 Aug 1973] 37521/74 Heading C5F [Also in Division D1] Yarn containing cellulosic fibres is impregnated with a copolymer having a glass transition point of 40‹ to 80‹ C. and a Young's modulus of 1 Î 10<SP>3</SP> to 1 Î 10<SP>4</SP> kg./cm.<SP>2</SP> and which comprises 20 to 80% by weight of first copolymerized monomer component selected from methyl methacrylate, styrene, acrylonitrile and mixtures thereof, 80 to 20% by weight of second copolymerized monomer component selected from acrylic esters of aliphatic alcohols having 1 to 8 carbon atoms, methacrylic esters of aliphatic alcohols having 4 to 8 carbon atoms, and mixtures thereof, and not more than 5% by weight of other copolymerized monomer components other than acrylic acid or methacrylic acid. Copolymers having too much of the first component are hard, and easy to remove but brittle. Copolymers having too much of the second component are flexible and resist abrasion of the treated yarn but have low lubricity and are difficult to remove. For comparison compositions comprising copolymers incorporating acrylic acid, crotonic acid, vinyl chloride and vinyl acetate are described. Preferably the composition is applied and later removed using a specified halogenated hydrocarbon solvent. The C 4  to C 8  alcohol may be n-butyl, isobutyl, n-pentyl, n-hexyl, n-heptyl, n-octyl or 2-ethylhexyl alcohol. The C 1  to C 8  alcohol may be methyl, ethyl n-propyl isopropyl or one of the C 4  to C 8  alcohols. The yarn may be a spun yarn or a filament yarn, the cellulosic fibre or filament may be cotton or rayon and optionally mixed with other fibres. The impregnant solution preferably contains 2 to 13% by weight of the copolymer and may include solid or liquid paraffin, mineral, animal or vegetable oil, an ester or a fatty acid amide as a lubricant, and softening, penetrating and surface active agents. The kinetic frictional coefficient of the impregnated yarn is measured using a thread tension rubbing tester. The lubricity of the impregnated yarn may be increased by applying 0-1 to 2% by weight of the yarn of liquid paraffin or a melt or emulsion of wax by roller coating or immersion.
Patent GB-828846-A (GB)
Title: Improvements in or relating to measuring and computing apparatus
IPC: A41H1/02
Filed: 1956-12-07
Abstract: 828,846. Calculating-apparatus. KLINGER MANUFACTURING CO. Ltd., and GILCHRIST, R. S. March 7, 1958 [Dec. 7, 1956], No. 37542/56. Class 106 (1). [Also in Group VII] In a measuring-apparatus, the area of a person's leg is calculated by measuring the length to the thigh, measuring the girth at ankle and thigh and optionally at the knee, adding and averaging the girth measurements and multiplying by the length. In the apparatus shown, the length measurement is recorded by vertical movement of the logarithmic scale 34 which is connected by a cord 31 and pulleys 32, 33 to one end of a pivoted member 28 whose other end 29 engages the thigh of a person standing on the platform 10. The various girth measurements effect movement of a crossbar 39 with window 40 for reading the scale 34 ; a pulley 41 mounted at one end of the cross-bar is engaged by a cord 42 whose ends pass through sheaths 36, 38, respectively, and are used to measure the girth at the thigh and ankle; a cord 43 for measuring girth at the knee passes through a sheath 37 and is connected to the other end of the cross-bar. The combined movements of the logarithmic scale and crossbar approximate to a multiplying operation for calculation of area of the leg. A similar device for calculating the area of the person's foot comprises a cord 16 and sheath 17 for measuring the girth at the instep, the cord being connected to a pivoted pointer 19. The pointer 19 moves over a logarithmic scale 22 which in turn is movable to record the length of foot; the length measurement is effected by a cord 27 fixed at one end to a movable toe-pad and passing through a sheath 25 secured to the heelrest 11, the other end of the cord being fixed to a pivoted member 23 carrying the scale 22. In alternative forms, multiplication of the length and girth measurements is effected by a potentiometer system or by differential gears. A further type of multiplying device consists of a roller movable radially on the face of a rotatable disc.
Patent GB-1366351-A (GB)
Title: Polyureaurethane shock absorbing compositions
IPC: C08G18/10
Filed: 1971-08-11
Abstract: 1366351 Non-metallic springs GOODYEAR TIRE & RUBBER CO 11 Aug 1971 [11 Sept 1970] 37695/71 Heading F2S [Also in Division C3] A shock-absorbing unit, Fig. 1, may comprise a shock absorbing element comprising a shaped solid resilient polyureaurethane prepared by reacting at least one diamine selected from orthodichlorobenzidine and 4,41-methylene bis-orthochloroaniline with a prepolymer derived from 3,3<SP>1</SP> - bitolylene - 4,4<SP>1</SP> - diisocyanate and reactive hydrogen containing polymeric materials which comprise or contain polytetramethylene ether glycol (see Division C3), having two opposing and substantially parallel force-receiving surfaces connected by at least one side-wall and having rigid force-receiving plates adhered to the force-receiving surfaces. A stack of the units in a tubular housing may be used in railroad draft gear. The cured polyureaurethane member 1 is bonded to two hot-rolled mild steel plates 2, 3. The shockabsorbing unit may also be used as a bridgesupport pad.
Patent GB-1526772-A (GB)
Title: Random copolymers and their use in aqueous clay based drilling muds
IPC: C08F220/56
Filed: 1975-09-15
Abstract: 1526772 Terpolymers containing sulphonate and amide groups HOECHST AG 15 Sept 1975 [14 Sept 1974] 37748/75 Headings C3P and C3J Random copolymers comprise units derived from (a) vinyl or allyl sulphonates (5-50 p.b.w.); acrylic or methacrylie acid amide, nitrile or methyl ester (25-92 p.b.w.); and N-vinyl-N-alkyl-carbonamides: in which R 3  = H, Me or Et, R 4  = Me or Et, or the N-alkyl-carbonamide moiety is a pyrrolidone grouping (3-70 p.b.w.) and fully or partially saponified products thereof. The copolymers are additives for clay-based drilling muds and in an example preparation is in aqueous medium at 50-84 C. in the presence of diazoisobutryonitrile, with optional saponification with 50% NaOH.
Patent GB-1019145-A (GB)
Title: Method of and apparatus for manufacturing formed bodies from synthetic,linear,high molecular weight polyamides of low monomer content
Inventor: LUDEWIG HERMANN
IPC: D01F6/60
Filed: 1962-10-05
Abstract: Polycaprolactam is purified to a monomer content of not more than 3% by extraction under pressure with a non-solvent for the polymer at a temperature above the normal boiling point of the non-solvent and the melting point of the polymer, the non-solvent being removed by de-gassing.  Specified non-solvents are water or mixtures of water and alcohol or ketones, or ketones.  The purification may be a step in a continuous polymerization process and is stated to be operable for polyamides generally. In the example polycaprolactam is purified to an extractables content of 0.5%.
Patent GB-1379132-A (GB)
Title: Method of dynamically balancing an elongate flexible rotor
IPC: G01M1/04
Filed: 1972-08-14
Abstract: 1379132 Balancing; resiliently mounting bearings; vibration dampers W & T AVERY Ltd 14 Aug 1972 [23 Feb 1972] 37816/72 Headings F2U F2A and F2S A method of balancing a long flexible rotor supported in four bearings, the two central bearings being rigidly mounted and the two outer bearings being mounted with an adjustable stiffness comprising first balancing the rotor at low speed with the outer bearings having a low stiffness and then balancing the rotor at high speed with the outer bearings rigid enough to restrain radial deflections of the rotor ends. Vibration damping mountings for the outer bearings may comprise connected to each outer bearing 1 torsionally flexible and bendable rods 2 ... 5 connected to blocks 6, 7 mounted by leaf springs 8 ... 11 as shown, the blocks being adjustably clampable between further leaf springs 12 ... 15 by controlled pressurization of hydraulic piston 21 and cylinder 22 units.
Patent GB-1524129-A (GB)
Title: Voltage level shift circuits
IPC: H03K19/094
Filed: 1976-09-13
Abstract: 1524129 Electronic timepieces DAINI SEIKOSHA KK 13 Sept 1976 [22 Sept 1975]  37863/76 Heading G3T [Also in Division H3] In an interface circuit a logic, inverter 12 is connected between supply terminals 15, 16, a pair of FET's 18, 19 are connected in series between supply terminals 15, 23 and the output of the inverter is coupled to the two FET's by way of capacitor 20 and uni-directionally conducting element 21, e.g. a diode or a further FET. Terminal 15 is connected to OV, terminal 16 is connected to a first potential VSSI and terminal 23 is connected to a second potential VSS2. Digital input signals at 17 are inverted by inverter 12 to produce at A a signal switching between OV and VSS1. When A is at OV, FET 18 is turned off and point B is at VSS 1 to turn 19 on, connecting output 22 to a potential of VSS2. When point A is at VSS1 FET 18 is turned on and point B changes to 2 VSS1 to turn FET 19 off, connecting output 22 to the OV potential. The arrangement may be used for voltage level shifting in an electronic timepiece, Fig. 5 (not shown).
Patent GB-1004507-A (GB)
Title: Improved semiconductor devices
IPC: H01L23/16
Filed: 1962-10-08
Abstract: 1,004,507. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. Oct. 8, 1962 [Oct. 12, 1961], No. 38049/62. Heading H1K. A P-N junction wafer is disposed between the inner wall of a cup-shaped support electrode and a counter electrode larger in area and thicker than the wafer. A lead extends from the counter electrode through a closure member sealing off the open end of the support electrode. In the device shown preformed sheets 9, 13 and 16 of lead-tin solder are assembled with a silicon wafer 10 and metal disc 14 on the base of cup-shaped member 4 together with a ceramic sleeve 12 and mica washer 18. A copper lead 24 bearing against solder sheet 16 passes through a metal tubule in the glass and metal ring 28. After the rim 31 of member 4 has been beaded over lead-tin solder annulus 30, the assembly is heated in inert gas to 260-315 C. to solder the various parts together and form a hermetically sealed enclosure. Suitable materials for member 4 are copper, silver, aluminium and base alloys thereof while copper, silver, aluminium, tungsten, molybdenum, tantalum and alloys containing one or more of these may be used for disc 14.
Patent GB-908751-A (GB)
Title: Attaching bodies to support members by the use of solder and brazing alloy
IPC: H01H1/023
Filed: 1960-11-04
Abstract: 908,751. Brazing. GIBSON ELECTRIC CO. Nov. 4, 1960 [Nov. 4, 1959], No. 38053/60. Drawings to Specification. Class 83 (4). In joining an electrical contact body to a metal support a tin containing solder is applied to the contact body, silver brazing alloy is placed between the solder and the support and the assembly is heated to melt the alloy and solder. A silver-cadmium oxide body is coated with a tin-lead alloy containing at least 50% and possibly 80 % tin by placing on the body an alloy or mixture of tin and lead with or without zinc, and heating at a temperature over 900 F. in a neutral or non-reducing atmosphere or in vacuo. A piece of brazing alloy, 15% silver, 80% copper, 5% phosphorus, is placed between the coating and a non-ferrous support and the assembly is heated in a neutral or non-reducing atmosphere or air at a temperature above 1300 F. Alternatively, the body is placed adjacent a tin-lead solder containing at least 50% and possibly at least 80% tin, a piece of alloy, 45% silver, 15% copper, 16% zinc, 24% cadmium, is placed between the solder and a ferrous support member and the assembly is heated above 1125 F. in air or a neutral atmosphere. The contact body may be of silver and zinc oxide, tin oxide, lead oxide or graphite.
Patent GB-323904-A (GB)
Title: Improvements relating to acetylene generators
IPC: C10H21/16
Filed: 1928-12-27
Abstract: 323,904. Brown, D. A. Dec. 27, 1928. Removing sludge from generators.-An acetylene generator of the type described in Specification 185,999, i.e. a generator including a main chamber supplied proportionately with water and carbide and an auxiliary chamber separated from the main chamber by a weir and fitted with an overflow connection for the discharge of the water, is provided with means for removing the sludge from time to time without putting the generator out of action. To this end, the chambers 1, 2, the chamber 1 being the main chamber, are constructed with dished bases 4, 6 respectively having sludge openings 5, 7 at the lowest parts, the openings being normally closed by loaded valves 9, 10 each comprising a conical valve engaging with an india-rubber or other deformable seating 11, 12 which overlaps the sludge opening. The valves 9, 10 are mounted on levers 13, 14 carrying weights 18, 19, and in practice each valve is opened for a sufficient time to permit the discharge of sludge but not of the. entire liquid content of the appropriate chamber. To avoid reduction of pressure in the chamber during the discharge of sludge, the lever 13 is operatively connected to. a valve 22 on a pipe 20 connecting the chamber 1 to the usual outside seal 21, the arrangement being such that when the valve 9 is opened, the valve 22 is also opened and gas returns to the chamber 1 to displace the sludge discharged.
Patent GB-1377469-A (GB)
Title: Process for reduction of 1-derivatives of 1-hydroxy benzimidazoles and 1-hydroxyimidazo 4,5-b pyridines
IPC: C07D471/04
Filed: 1971-12-23
Abstract: 1377469 Benzimidazoles and imidazo-(4,5-b)- pyridines ELI LILLY & CO 23 Dec 1971 [28 Dec 1970] 38302/73 Divided out of 1374800 Heading C2C A process for preparing benzimidazole or imidazo-(4,5-b)pyridine compounds of general formulµ wherein R<SP>1</SP> is H, Cl, F, C 1-6 -pernuoroalkyl or a radical -(CHZ) n -CH 2 Z in which Z is H or halogen and n is 0 or 1; each R<SP>3</SP> is halogen; each R<SP>4</SP> is nitro, -CF 3 , -CF 2 Cl or -CF 2 H; R<SP>5</SP> is cyano or C 1-4  alkylsulphonyl; m is 0 or an integer 1-3, n is 0, 1 or 2 and r is 0 or 1 and the sum of m, n and r is 0 or an integer of 1-3; R<SP>6</SP> is halogen, nitro, -CF 3 , -CF 2 Cl, -CF 2 H or C 1-4  alkylsulphonyl provided that not more than one R<SP>6</SP> is nitro, -CF 3 , -CF 2 Cl, -CF 2 H or alkylsulphonyl, involves treating an ester of a 1-hydroxybenzimidazole or imidazo(4,5-b) pyridine of general formula  in which -OR<SP>2</SP> is a group derived by reaction of the corresponding 1-hydroxy compound with a bromide, iodide, oxybromide, oxyiodide, oxide or sulphide of P, As or Sb or bromide, iodide, oxybromide or oxide of sulphur or R<SP>2</SP> is (1) C 2-16  alkanoyl; (2) C 3-16  alkenoyl, (3) carbamoyl of formula -C(X)-N(R<SP>7</SP>) 2  wherein X is 0 or 5 one R<SP>7</SP> is phenyl, C 1-4  alkyl or C 2-4  alkenyl and the other R<SP>7</SP> is H, C 1-4  alkyl or C 2-4  alkenyl, providing both R<SP>7</SP> taken together do not have more than 6C atoms, or both R<SP>7</SP> taken together represent a C 2-6  straight alkylene chain; (4) a radical  wherein R<SP>8</SP> is methylene, ethylene or vinylene and q is 0 or 1, (5) -SO 2 -R<SP>9</SP> in which R<SP>9</SP> is C 1-4  alkyl, C 5-6  cycloalkyl, phenyl or benzyl or (6) -C(O)-X-C 1-4  alkyl or wherein X is O or S, with a bromide or iodide nucleophilic reagent, except that when -OR<SP>2</SP> is a derivative of the 1-hydroxy compound and a sulphide the nucleophilic reagent is a sulphide. The Br or I ion may be provided by the compound used to derive the unstable halides or oxyhalides. Amongst the examples 6-chloro-2- (trifluoromethyl) - 1H - imidazo(4,5-b) - pyridine is obtained by treating the 1-hydroxy derivative with either P 2 S 5  or thionyl bromide, or by treating the 1-(methyl-sulphonyloxy) -compound with sodium iodide.  1 - Hydroxy - 6 - chloro - 2 - (trifluoromethyl)- 1H - imidazo(4,5-b) - pyridine is obtained by reductive cyclization of 5-chloro-3-nitro-2-(trifluoroacetamido)pyridine. Reference has been directed by the Comptroller to Specification 1,307,489.
Patent GB-1090409-A (GB)
Title: Lighting systems for road vehicles
Inventor: PARKES ERIC BERNARD
IPC: B60Q1/48
Filed: 1963-09-28
Abstract: 1,090,409. Vehicle lighting systems. JOSEPH LUCAS (INDUSTRIES) Ltd. Nov. 26, 1964 [Sept. 28, 1963], No. 38303/63. Heading H2H. A motor vehicle lighting system comprises a switch 14 whereby front and rear lamps 17 on the offside or number plate, and nearside front and rear lamps 19 may be energized independently for parking purposes. A switch 21 coupled to an ignition switch 22 prevents the car being driven away with only some of the lamps illuminated. In a modification, the contact arm in one position may bridge both contacts 16, 18, and in a further arrangement the contact arm 15 is connected directly to the battery and contact 9 replaced by two contacts each connected to the lamps on one side of the vehicle, the two contacts being bridged by contact 6.
Patent GB-1527803-A (GB)
Title: Door hold-open device for a motor vehicle
IPC: E05B17/08
Filed: 1976-09-16
Abstract: 1527803 Stay devices with lubrication ED SCHARWACHTER KG 16 Sept 1976 [22 Sept 1975] 38411/76 Heading E2F A stay device of the kind in which a stay bar (shown in side view in Fig. 7) is provided with thickened portions 4 and slides between two members (one member shown in Figs. 4. 5) located in a support housing (not shown) is lubricated by providing means containing lubricant on the surfaces of the members which contact the bar and/or the housing. The member shown in side view in Fig. 5 has a surface 5 which engages one side of the bar and faces a similar surface on another member. Fig. 4 shows the surface 5 provided with spaced rows of recesses 6 which contain lubricant, similar recesses are provided on surface 2 of each member which engage the housing in use. Lubricant recesses 17 are provided on the bar.
Patent GB-1486301-A (GB)
Title: Master cylinders for vehicle dual circuit braking system
IPC: B60T11/20
Filed: 1974-09-03
Abstract: 1486301 Master cylinders GIRLING Ltd 15 Aug 1975 [3 Sept 1974] 38414/74 Heading F2F A tandem master cylinder with first and second pressure chambers 4, 4A has a by-pass outlet 6 to the second chamber controlled by a by-pass valve 8 which includes a differential area piston 9 subjected to the fluid pressures of the chambers 4, 4A on opposite sides thereof coupled to a valve member B, the valve being open when the chambers are substantially unpressurized but closed by built-up of pressure in the first chamber so that the valve is operated during each normal master cylinder operation and is opened by a predetermined excess pressure in the second chamber over that in the first chamber. Failure of pressure to the front brakes, connected to chamber 4, result in piston 9 being moved to pull member 13 clear of outlet 6 so that primary piston 2A engages secondary piston 2 and chamber 4A is pressurized, the fluid passing through outlet 6 direct to the rear brakes. As shown the piston 9 slides in a through bore 10 in piston 2A.
Patent GB-1008406-A (GB)
Title: Dry battery made up of a series of cells and method of covering the battery
IPC: H01M50/103
Filed: 1961-10-27
Abstract: 1,008,406. Electric batteries. SAKAI KASEI KOGYO KABUSHIKI KAISHA. Oct. 27, 1961 [Nov. 10, 1960], No. 38586/61. Heading H1B. A dry battery comprises a stack of flat cells 1 and fibre plates 6 carrying terminals 5, all retained by a heat-shrunk thermoplastic polymer B.
Patent GB-1114988-A (GB)
Title: Electromagnetic tooth clutch
IPC: F16D27/09
Filed: 1966-08-31
Abstract: 1,114,988. Positive clutches. BENDIX CORPORATION. 31 Aug., 1966 [22 Oct., 1965], No. 38794/66. Heading F2C. To increase the maximum capacity of an electromagnetically-operated positive clutch having a driving body 12 and a driven armature 28, fast with input and output shafts respectively, formed with peripheral facial teeth 22, 30 which are interengaged by axial movement of the armature 28, splined on a driven hub 46, effected by energizing a coil 16 carried by member 12 and supplied with current through a slip ring 20, the interengaged teeth are positively looked during clutch engagement by the action of a secondary armature 38 formed with a cam surface 42, which during coil energization is additionally attracted axially towards the coil to seat against the primary armature 28 (Fig. 2, not shown), the cam surface 42 radially expanding a garter spring 44 into a chamfered recess 54 on the hub 46 axially locking the primary armature 28 against disengaging thrust loads generated at the engaged teeth 22, 30. As shown, the primary armature 28 is formed with a series of nonconducting segmented air gaps 32 spaced by spokes (35) (Fig. 3, not shown), or a discontinuous or continuous ring of non-conducting material, whereby initially on coil energization, the flux path from coil 16 passes through the spokes (35) to axially move and engage the primary armature 28, after which the flux intensity through the spokes (35) increases to saturation point forcing the flux path to cross an air gap (B) (Fig. 6, not shown) to axially attract the secondary armature to seat against the primary armature (Fig. 2, not shown). On coil de-energization, the primary armature is disengaged by spring-loaded plungers 24, 26, and the secondary armature moved back to the driven hub 46 by a ring of permanent magnets 50, which ring of magnets are omitted from the simplified embodiment of Figs. 5 and 6 (not shown) in which the secondary armature is journalled in an inner non-conducting ring (160) of the primary armature.
Patent GB-1060003-A (GB)
Title: Process and apparatus for the alkaline roasting of materials containing chromium oxide
IPC: C22B1/02
Filed: 1963-10-02
Abstract: In a process for the alkaline roasting of materials containing chromium oxide, the material is pressed into cakes and conveyed, free from mechanical stresses, on a support moving counter-current to the flow of roasting gases through a reaction space the length of which is substantially greater than the height, the temperature in the reaction space increasing in the direction of advance of the material to be roasted to a maximum temperature less than the melting or sintering temperature of the cakes.  The flow velocity of the roasting gas may be from 1 to 10 m./sec.  The cakes may have thickness up to 50 mm.  The roasting may be conducted in a tunnel or canal furnace in which the reaction space is separated from the firing space by a wall of bricks, for example silicon carbide bricks, preferably impregnated with a material having a high melting-point, for example kaolin.