baber/WOPTO huggingface dataset:
Patent GB-964500-A (GB)
Title: Improvements in or relating to differential valves for pneumatic circuits
IPC: F16K21/06
Filed: 1960-11-29
Abstract: 964,500. Valves. REGIE NATIONALE DES USINES RENAULT. Nov. 29, 1960 [Dec. 1, 1959], No. 41065/60. Heading F2V. A fast-opening and delayed-closing differential-piston actuated pneumatic valve has air at 4 passing via 22 to act in chamber 24 on the lower face of piston 7 whereby valve 12 and seal 14 are quickly lifted out of opening 26 so that air passes to outlet 5 via 25. After a predetermined time, inlet air passes via 37, adjustable throttle 29<SP>1</SP> and 34 to act in chamber 35 above the piston to slowly close the valve. To reopen the valve, the inlet 4 must be connected to exhaust whereby the air above the piston is exhausted via passages 38 and annular elastic check valve 39. The next application of pressure to the inlet lifts the valve piston from below. The space 19 beneath the valve guide stem 15 is vented at 18.
Patent GB-1099504-A (GB)
Title: Improvements in or relating to drawer handles
Inventor: FROSH SIDNEY
IPC: A47B95/02
Filed: 1964-10-08
Abstract: 1,099,504. Drawer handles. S. GREENMAN Ltd. Dec. 14, 1965 [Oct. 8, 1964; Dec. 15, 1964], Nos. 41080/64 and 51062/64. Heading A4U. A drawer handle assembly of the gravity-drop type includes a mounting member 1 formed with rearwardly open notches 4 or a groove to receive a pivot bar 6 or aligned stubs forming an integral part of the handle 2, the mounting member 1 having side shoulders 8 disposed rearwardly of the front of the central portion of the mounting member 1 and providing stops for spaced side limbs 7 of the handle 2. The bar 6 is releasably retained in the notches 4 by upset portions of side walls 3 of the mounting member 1 to form a unitary assembly, or by the face face of the drawer to which the mounting member 1 is secured. In a modification (Figs. 5-8) the shoulders 8 are shaped to urge the bar 6 to the closed ends of the notches 4 when the handle 2 is lowered.
Patent GB-1199434-A (GB)
Title: Electric System for Photographic Colour Separation.
IPC: G03B27/72
Filed: 1967-09-12
Abstract: 1,199,434. Colour printing. BERKEY PHOTO Inc. Sept.12, 1967 [Oct. 5, 1966], No.41580/67. Heading G2A. In an apparatus for making separation negatives or positives from colour transparencies in preparation for the manufacture of colour printing plates, a main exposure lamp and a flash panel are provided, with timed switching means for energizing these lamps in accordance with settings for predetermined exposures. The "direct screening" method (i.e. performing the colour separation and half tone screening processes in the same step) is used, and a single colour correction mask is used for the four separation negatives. A trial set of negatives is made first, using recommended exposure times from a table. When a satisfactory set is obtained, the exposure times and lens aperture are recorded, and used with subsequent transparencies. The highlight density is first measured by a light meter probe 20 in the highlight area of the projected image, and the lens aperture adjusted accordingly, the exposure times remaining constant. Initially the colour correction mask is registered over the transparency, and placed in the transparency holder of an enlarger. The image is projected on to the film on the easel, and the film exposed by the main exposure lamp 4. A flash panel 17 is then swung into position, together with an appropriate colour filter, according to whether a cyan, magenta, or yellow separation negative is being prepared, and an additional flash exposure is made. The fourth separation negative (black) is not given the additional flash exposure. The diagram shows an electrical system for controlling the sequence of operations. The timing circuit 52 is set by a series of selector switches 10, 11 giving a range of times for the main exposure lamp 4, which is preferably a pulsed xenon discharge lamp, of from 0 to 330 seconds. The timing for the flash panel 17 can be set for a range of from 0 to 22 seconds by a selector switch 14. Separate timing ranges are provided for each separation colour, i.e. 10m, 11m and 14m for magenta &c.
Patent GB-1061137-A (GB)
Title: Improvements in or relating to electromechanical transducers
Inventor: DYMOKE-BRADSHAW LESLIE EUGENE
IPC: H04R11/00
Filed: 1965-10-01
Abstract: 1,061,137. Transducers. STANDARD TELEPHONES & CABLES Ltd. Oct. 1, 1965, No. 41736/65. Heading H4J. The armature 15 of a rocking armature electro-acoustic transducer has two similar opposed lugs 17 and 21, either of which can be attached to a driving member 20 of a diaphragm 18. The unattached lug maintains a balance of the magnetic air gaps A and B between the two ends of the armature 15 and corresponding polepieces 11 and 12 in the assembled transducer. The armature 15 has a ridge 16 and may have a similar ridge (not shown) on its opposite face. Energizing coils (not shown) are provided on the polepieces 11 and 12.
Patent GB-1357987-A (GB)
Title: Sounding device
IPC: A63H5/00
Filed: 1972-09-08
Abstract: 1357987 Automatic whistles SUCHIRON KAGAKU KOGYO KK and DAISHIN TRADING CO Ltd 8 Sept 1972 [3 April 1972 29 July 1972] 41818/72 Heading G5J A valve 29 opens and closes an aperture 13 between two resonator chambers 9, 10 to change the note produced by a whistle in a toy fire-engine or the like, A fan 15 blows air through a nozzle (11, Fig. 4, not shown) to a conventional whistling mouth (14) and knifeedge which are formed in one wall of one resonator chamber 9. The resonator chambers 9, 10 are formed integrally with the fan chamber 8. The valve 29 is attached to a rod 28 moved up and down by a cam 25 driven through gears by a motor 16 which also drives the fan 15 and a rotating barrier 7 around a lamp 6. Alternative embodiments have three (Fig. 5, not shown) or more resonator chambers and may play tunes of more than ten notes.
Patent GB-1454323-A (GB)
Title: Semiconductor tehrmally sensitive switch structure
IPC: H01L29/74
Filed: 1974-09-26
Abstract: 1454323 Semiconductor devices MITSUBISHI DENKI KK 26 Sept 1974 [26 Sept 1973] 41855/74 Heading H1K A thermally sensitive semiconductor switch comprises a PNPN (NPNP) thyristor structure (10, 12, 14, 16) and means for heating the structure and insulated therefrom for altering its state of conductivity. The device is built on a ceramic substrate 40 which has a zig-zag metal track 34 on it and forming the heater. A glass plate 42 separates the thyristor from the heating track 34. A variable resistor may be connected between the gate and cathode to vary the switching temperature.
Patent GB-1515849-A (GB)
Title: Electric cables
IPC: H01B9/06
Filed: 1974-09-26
Abstract: 1515849 Cable insulation BICC Ltd 12 Sept 1975 [26 Sept 1974] 41900/74 Heading H1A A supertension cable in which the dielectric is at least partly built from tapes of a polyethylene or polypropylene layer 12 bonded to at least one paper tape 13 is impregnated with a fluid consisting of a polydiorganosiloxamer with a viscosity >10 cs. at 25‹ C. and a selected hydrocarbon oil in proportions selected to produce, after exposure at 85%, a swelling of 3-4¢% of the laminate at a pressure of 0À5 MN/m.<SP>2</SP>. An experimental technique is given in the Specification. The paper layers of the tape are preferably <80 Ám. thick, preferably <50 Ám in the inner part of the dielectric, which may be built in steps, and may be loaded with aluminium oxide or similar materials. Preferred fluids are polydimethylsiloxamer and alkylated benzenes, particularly dodecyl benzene.
Patent GB-1346807-A (GB)
Title: Safety device in a rolling mill
IPC: B02C4/38
Filed: 1971-09-08
Abstract: 1346807 Rolling mills MIAG MUHLENBAU UND INDUSTRIE GmbH 8 Sept 1971 [16 Sept 1970] 41986/71 Heading B3M [Also in Division F2] A safety device for a rolling mill, which prevents foreign bodies or overloads from damaging the rolls 2 and 3 or the adjusting mechanism 6 of the mill, is associated with each of two pivoted levers 4 which support one roll 2 for movement towards or away from the other roll 3. The lower ends of the levers are pivoted to a fixed frame 1, whereas their upper ends co-operate with a cylinder 9 (Fig. 2). In each device two pistons 14 and 20 are housed in the cylinder and are urged apart by hydraulic fluid introduced between them through a bore in the piston 14. When a small foreign body passes between the rolls, the lever 4 urges the piston to the left, the hydraulic fluid then simply cushioning the shock. If a large overload is suffered by the rolls, however, the piston 20 forces the piston 14 to the left and causes a shear pin 16 to fracture. A face 25 on the piston 14 prevents it from leaving the cylinder. The supply of hydraulic fluid moves the lever to its initial position in either case. A warning signal may be provided when the pin 16 fractures. To adjust the roll spacing, a further piston 21 acts on the upper ends of the levers 4. The piston 21 is coupled by a rod 8 to the adjusting mechanism 6, which is operated by a hand lever 7.
Patent GB-1208339-A (GB)
Title: Method of treating windscreens
IPC: C08J7/12
Filed: 1968-09-04
Abstract: 1,208,339. Vehicle windshields. HAMBURGER FLUGZEUGBAU G.m.b.H. 4 Sept., 1968 [29 Sept., 1967], No. 42007/68. Heading B7J. [Also in Division E1] A method of treating aircraft or spacecraft windscreens which have at least their outer layers composed of a highly transparent rigid sheet plastics material, e.g. a polyester, is characterized in that the surfaces of the screen are treated with a halogen, e.g. bromine vapour or solution, or mixtures of halogens such as bromine with chlorine, to render them electrically anti-static, i.e. to have a specific resistance of about 10<SP>9</SP> ohm cm. The reaction may be accelerated by light and heat, and any excess bromine neutralized by treatment with aromatic or aliphatic amines, e.g. diethanolamine, including hot aqueous solutions of such amines, or steam.
Patent GB-1244533-A (GB)
Title: Inclination measuring device
IPC: G01C9/14
Filed: 1969-08-25
Abstract: 1, 244, 533. Measuring angular displacement electrically. DATAWELL N.V. Aug. 25, 1969 [Aug. 27, 1968], No.42171/69. Heading G1N. Apparatus for measuring angular displacements from the vertical comprises a liquid-filled vessel 1 having a spherical internal surface from which a rigid bar 10 projects radially to the centre of the sphere to support a winding 5 by means of a thread 3 so that winding 5 is always horizontal, two further mutually perpendicular windings 8, 9 being mounted on the vessel concentrically therewith. In use, current is supplied to the winding 5 through one or more conductors inside the suspension thread 3 so that departure of either of windings 8, 9 from the vertical causes a voltage to be induced in it which voltage is proportional to sin Á where Á is the angular displacement from the vertical. In an alternative embodiment Fig. 46 (not shown) the liquid filling the vessel is electrically conducting and forms the return path for alternating current to the winding 5. The vessel may be carried by a ship or buoy. It is stated that if the azimuth orientations of the windings 8, 9 are known then the geographic orientation of the inclination of the windings may be determined and hence the direction of propagation of ocean waves, where the vessel is on a buoy.
Patent GB-1377236-A (GB)
Title: Microphone amplifier
IPC: H04R3/04
Filed: 1972-09-13
Abstract: 1377236 Automatic gain control, substation circuits STANDARD TELEPHONES & CABLES Ltd 13 Sept 1972 42479/72 Headings H4R and H4K An amplifier for converting the output of a moving coil microphone to the form of that from a carbon granule microphone includes an attenuator 3 between two of its stages which is switchable to give reduced attenuation as the signal level exceeds a predetermined level. The attenuator is a T attenuator with a transistor VT2 in series with the shunt arm and the transistor is switched from saturation to cut off by a signal derived by voltage doubler rectifier D1, D2 from the signal feeding the attenuator when that signal exceeds a predetermined threshold. The amplifier is supplied with power from a telephone line via a bridge network, Fig. 3, in which the conventional silicon diodes are replaced by transistors to reduce the voltage drop in the bridge.
Patent GB-1274474-A (GB)
Title: Dual-chamber ejector and filling connector
IPC: A61D1/02
Filed: 1969-08-26
Abstract: 1,274,474. Dual chamber injector. PFIZER CORP. 26 Aug., 1969 [28 Aug., 1968], No. 42533/69. Heading A5R. [Also in Divisions B8 and F1] A dual chamber injector comprises a piston syringe 1 with a chamber I and a nozzle 7, a receptacle 4 having a chamber II and a neck 15 a connecting member 2 screwed onto the neck 15, and a sleeve 3 mounted in member 2 so as to seal onto nozzle 7 and able to slide into the connecting member 2 to remove a sealing element 13 on the end of the connecting member 2, and thus provide communication between chambers I and II through apertures 9 which move clear of the inner surface of member 4. The parts are of plastics materials. In use, after the sealing element 13 is removed by moving sleeve 3 forward, a piston 6 is withdrawn to draw a liquid in chamber II into contact with chamber I. Syringe 1 and nozzle 7 are then withdrawn and an injection needle may be fitted to the syringe. The injector may have non-medical uses, e.g. as a dispenser for a cream obtained by mixing a freeze dried component in chamber I with a liquid in chamber II.
Patent GB-1473435-A (GB)
Title: Reactive dyestuffs
IPC: C09B62/002
Filed: 1975-10-17
Abstract: 1473435 Reactive dyestuffs BAYER AG 17 Oct 1975 [23 Nov 1974] 42622/75 Heading C4P  The invention comprises reactive dyestuffs of the general formula wherein W is a direct bond or a divalent radical, T and T<SP>1</SP> are -SO 3 H or a salt thereof, n is 0 or 1, R is H, alkyl, aryl, arylalkyl or cycloalkyl when n is 1 or sulphoalkyl, sulphoaryl, sulphoarylalkyl or sulphocycloalkyl if n is 0, R 1  and R 2  are H or non-ionic substituents, p is 1, 2 or 3 and Z is a fibre reactive group preferably free from groups conferring water-solubility. Divalent radicals W include C 1 -C 4 -alkylene, cycloalkylene having up to 8 C atoms, and containing 5 to 6 ring members, and optionally substituted phenylene. Z may be aliphatic or heterocyclic and the groups 2,6 - difluoro - 5 - chloro - 4- pyrimidinyl, 2,3 - dichloroquinoxaline - 6- carbonyl- and 2,4-dichlorotriazinyl-6- are most preferred. They are prepared by reacting an optionally further substituted 4-amino-disulphonaphthalene 1,8-dicarboxylic acid or anhydride with an amine of the general formula wherein T<SP>1</SP>, R 1 , W, R, n and p are as above in an aqueous and/or orgnaic solvent at 80-180 C. e.g. using aqueous sodium bisulphite solution under reflux and then reacting the intermediate formed with a compound Z-X where X splits off as an anion at pH 2-11 at 0-45 C. to introduce Z. When n is 0 and R is not sulphonated the intermediate product is sulphonated at 10-60 C. using oleum, e.g. 20% oleum at 50 C. The dyes are used to due or print nitrogen containing materials, e.g. polyamides, and OH containing materials, e.g. cotton.
Patent GB-898588-A (GB)
Title: Valve spring assemblies
IPC: F01L3/16
Filed: 1960-12-12
Abstract: 898,588. Valves. SULZER FRERES S.A. Dec. 12, 1960 [Dec. 17, 1959], No. 42679/60. Classes 7(2) and 7(6). [Also in Group XXXII] A valve spring assembly comprises at least one valve spring 6 or 7 and a plurality of plate springs 9 disposed in series with the valve spring and enclosing a space acting as part of an hydraulic damper, means being provided for feeding lubricating oil to the space. In the valve closed position shown in the left half of the view, a port 13 in a sleeve 8 communicates with a passage 15 in valve guide 2. During valve spring compression, oil previously drawn into the space enclosed by the plate springs, is forced through port 14, and passage 16 to lubricate the valve stem. Air flowing through passages 18 and 19 prevents oil penetration to the valve seat. In another embodiment, the valve guide and stem materials do not require lubrication and the oil is returned directly to the valve chamber. In modifications, the sleeve 8 is omitted oil flow being controlled either by imperfect closure of the plate springs or by a flap valve.
Patent GB-992197-A (GB)
Title: Improvements in or relating to electronic pulse counting systems
IPC: H03K23/00
Filed: 1963-10-31
Abstract: 992,197. Electric counters. ROCHAR ELECTRONIQUE. Oct. 31, 1963 [Nov. 2, 1962], No. 43042/63. Heading G4A. A decade counter comprises five serially connected stages each having a control input and an output which is connected to the control inputs of all the other stages so that the "on" state is transferred from one stage to an adjacent stage, each stage comprising two units the first units forming a first group and the second units a second group, a further bi-stable unit being provided with first and second outputs connected respectively to the two groups. The decade consists of six pairs of NPN transistors 10-21. The five pairs 10, 11 to 18, 19 are connected as a ring counter and the last pair 20, 21 as a scale-of-two counter. The input is at terminal 22 to the scaleof-two counter, successive pulses causing the transistors 20, 21 to conduct alternately. Diodes 25, 26 act as gates which are each enabled by conduction of the opposite transistor. The collectors of transistor 20, 21 are connected to the drive lines 27, 28. As the state of conduction in transistor pair 20, 21 changes a pulse is applied to one or the other of lines 27, 28 alternately. Line 27 is connected to odd numbered transistors 11, 13, 15, 17, 19, and line 28 to even-numbered transistors 10, 12, 14, 16, 18 Each transistor pair e.g. 10, 11 has a control input to both bases. The output 30 is connected to the collectors of both transistors through diodes 31, 32. Terminals 30 is connected to the input 33 of the next stage 12, 13 through resistor 34 and capacitor 35 in parallel and to the inputs of the other stages through resistors. The other stages are similarly connected, the arrangement being such that if one of the transistors of a pair 10, 11 is conducting the next change of pair 20, 21 causes conduction to pass to one in the next pair, 12, 13 and so on. In each case the one which conducts is determined by the pair 20, 21 through odd-even lines 27, 28. There are digit outputs from the ten transistors 10-19 and the zero stage 10 has a connection 88'to give a carry signal for the next decade. The counter outputs may control a numerical indicator tube.
Patent GB-1518061-A (GB)
Title: Rotary positive-displacement fluid-machines
IPC: F15B15/12
Filed: 1976-10-18
Abstract: 1518061 Rotary positive-displacement fluidmachines KITAZAWA SHOJI KK 18 Oct 1976 [26 March 1976] 43212/76 Heading F1F In an actuator, or a pump, has pistons 2 between fixed partitions 6, 6', and an output, or input, shaft 4 connected to the pistons by an arm 5 and a rod 3 passing through the partitions 6' and preferably the partition 6 too (as shown). The shaft may have a tongue 19 attached thereto so that movement of the pistons can be limited by screws 26. The pistons may be secured to the rod 3 by clamping plates 10.
Patent GB-1042089-A (GB)
Title: Improvements in or relating to leather substitutes and methods of making the same
IPC: D04H13/00
Filed: 1964-10-23
Abstract: A leather substitute comprises a fibrous web e.g. of rayon staple fibre, a fabric e.g. a plain woven cotton fabric, or a knitted fabric, united to the web by needle punching, the fabric being napped on the side of the fabric opposite to the web, and a polymer coating upon the napped surface the fabric.  The fabric may be a flannel or a suede fabric.  The polymer coating may be one which has been heat-pressed on the fabric at a temperature above the softening point and below the melting point of the polymer.  The leather substitute may be made by uniting the fibrous web e.g. random or carded web, and a fabric, such as woven e.g. plain, twill, satin, or knitted fabric, together by needle punching with barbed needles from the web side thereof, napping the surface of the fabric on the side opposite the web, coating a polymer upon the napped surface of the fabric, and pressing and heating the polymer coating at a temperature above the softening point and below the melting point of the polymer.  The napped surface may be sheared before coating with the polymer.  The polymer may be a substantially linear polyurethane/urea polymer which is obtained by the reaction of polyalkylene ether glycol or polyester glycol with molar excess of organic polyisocyanate to produce a prepolymer having terminated isocyanate groups and followed by chain extension of the prepolymer with an organic diamine e.g. hydrazine and ethylene diamine, the polymer being coated upon the napped surface and subsequently being pressed and heated from the napped surface side of the fabric at a temperature in the range of 130 DEG C. to 200 DEG C.  Another polymer may be obtained by chain extending the reaction product of polyethylene glycol and molar excess of toluene diisocyanate, and having terminated isocyanate groups, with a polyamide prepared by the reaction of E-caprolactam with hexamethylene diamine hydrochloride.  Unwoven cloths may be inserted between the fibrous web and fabric.
Patent GB-1068158-A (GB)
Title: Wheel cover
IPC: B60B7/08
Filed: 1963-11-04
Abstract: 1,068,158. Wheel covers. AVIS INDUSTRIAL CORPORATION. Nov. 4. 1963 [Nov. 14, 1962], No. 43486/63. Heading B7C. A wheel cover 10 for attachment to the outboard side of a wheel has a peripheral edge 24 adapted to be seated on the bead-retaining side flange of a wheel rim and comprises, extending axially inboardly from the edge 24, a continuous annular flange 26 and a plurality of radially resilient extensions 28 formed integrally at the inboard edge of the flange 26, each extension 28 being formed with a series of circumferentially aligned slots 34 and a series of retention elements 32 projecting radially outwardly adjacent to and inboardly of the slots 34, each element 32 being connected to the associated extension 28 by a pair of side portions 40 and being adapted to engage the radially inner surface of the bead-seating flange of the wheel rim and thus hold the cover in position. The elements 32 are pressed from the material of the extensions 28 and each comprise an inclined central portion 36 supported by the integral side portions 40. When the cover is pressed on to the wheel the extensions 28 resiliently yield in a radial direction while the edges 38 of the retention elements 32 grip the axial flange 20. The free inboard edges of extensions 28 are reinforced.
Patent GB-1323352-A (GB)
Title: Production of synthetic lubricating oils
IPC: C10G50/02
Filed: 1970-09-11
Abstract: 1323352 Synthetic lubricating oil by concominant polymerization and alkylation SNAM PROGETTI SpA 11 Sept 1970 [12 Sept 1969] 43665/70 Heading C5E A synthetic lubricating oil is produced by concomitantly polymerizing a hydrocarbon mixture including olefins (capable of being obtained by wax cracking) with an AlCl 3  catalyst and alkylating an aromatic material with a hydrocarbon of the mixture or a polymer formed during the polymerization, there being a gradual rise in temperature during the whole of the alkylation, separating the resulting alkylate as an oil phase and purifying by distillation. The hydrocarbon mixture may comprise C 6 -C 20  α-olefins and the aromatic material may be benzene, toluene, C 9  or C 10  alkylbenzene, commercial gas oil or an optionally partially hydrogenated light cycle oil. The purified oil product may be catalytically hydrogenated, e.g. with a Ni or metal oxide catalyst at 200-350‹ C. at a H 2  pressure of 50-100 kg./cm.<SP>2</SP> The temperature during the alkylation may be allowed to rise from 25‹ to 90‹ C. The oil product may be further purified by treatment with CaO or bleaching earth.