baber/WOPTO huggingface dataset:
Patent GB-1373403-A (GB)
Title: Control of internal combustion engines by fluid actuated valves
IPC: F01L9/10
Filed: 1971-10-15
Abstract: 1373403 IC engine valve gear ROBERT' BOSCH GmbH 15 Oct 1971 [19 Oct 1970] 48011/71 Addition to 1294217 Heading F1B [Also in Division F2] A system to control I.C. engine inlet and exhaust valves has a working piston 9 acting on the stem 3 of an inlet valve 2 to open the valve intermittently against closure spring 6 and a solenoid valve 8 to control the intermittent supply of fluid to operate the working piston, adjusting means responsive to a thermostatic element controlling the inlet valve lift so that it opens more when the engine is cold than when it is hot. The adjusting means also responds to engine speed and load and to accelerator and brake pedal positions and the pressure in the fluid. The adjusting means comprises a device 37 which may be a hydraulic piston or electric motor controlled by device 38 which comprises a regulator (38R) and a transducer (38F) in a feedback circuit to the regulator, Fig. 2 (not shown). The regulator may be an amplifier whose output controls pump 14 in response to the output of a device responsive to the position of accelerator pedal 40 and the output of temperature responsive adjusting device 46.
Patent GB-1021608-A (GB)
Title: Process for the preparation of polyamides of iso-and terephthalic acids
IPC: C08G69/30
Filed: 1964-12-01
Abstract: Polyamides are prepared by reacting a diester of iso- and/or terephthalic acid, which may be substituted by one or more alkyl groups or one or two halogen atoms, and phenol or an alkyl phenol with equivalent quantities of a primary aliphatic or araliphatic diamine at 20 DEG  to 150 DEG  C. in an aromatic hydrocarbon solvent to give a suspension of precondensate which is further condensed by heating a suspension thereof in either the same or a higher-boiling liquid which is a non-solvent for the polyamide at a temperature of 170 DEG  to 350 DEG  C. near but below the melting range of the polyamide until the polyamide is obtained in discrete particle form with a molecular weight corresponding to a relative viscosity of at least 1.8.  The resulting polymer particles may be washed with a volatile liquid and tumbler dried.  Specified diamines are tetra-, hexa- and deca-methylene- and xylylene-diamines. Relative viscosity is measured on 1 g. polymer in 100 c.c. phenol/tetrachloroethane (60/40 w./w.) at 25 DEG  C. Examples illustrate the preparation of hexamethylene iso-, tere-, mixed iso- and tere-, methyltere-, 2,5-dichlorotere- and mixed tere- and t-butylisophthalamides; tetramethylene, decamethylene and mixed hexamethylene and m-xylylene or hexahydro-p-xylylene isoterephthalamides and mixed hexamethylene and ethylene mixed iso- and tere-phthalamides.
Patent GB-1245316-A (GB)
Title: Novel quinazolinone derivative and process for production thereof
IPC: A61K31/505
Filed: 1969-10-07
Abstract: 1,245,316. Quinazolinone derivative. TROPON G.m.b.H., [trading as TROPONWERKE DINKLAGE & CO.]. 7 Oct., 1969 [16 Oct., 1968], No. 49142/69. Heading C2C. Novel 2 - methyl - 3 - {3 - (4 - phenylpiperazin - 1 - yl) - 2 - hydroxy - propyl}- quinazolin-4-one is prepared by reaction of 1- phenyl-piperazine with 2-methyl-3-(3-bromo-2- hydroxypropyl) - quinazolin - 4 - one or 2- methyl - 3 - (2,3 - epoxypropyl) - quinazoline-4- one, which latter compound may be prepared in situ by reaction of 2-methyl-quinazoline-4-one with epichlorohydrin. Pharmaceutical compositions comprise the novel compound together with a suitable carrier and are administered orally as analgesics and antitussives.
Patent GB-1513983-A (GB)
Title: Notebooks
IPC: B42D3/12
Filed: 1976-11-25
Abstract: 1513983 Notebook IMPRIMERIE OBERTHUR SARL 25 Nov 1976 49188/76 Heading B6A The cover of a notebook includes a folded and welded member 1 which both provides a holder for a pencil and accommodates a clasp 2 for the notebook. The clasp 2 has a barb 10, and slides into plate in a slit in the member 1.
Patent GB-493110-A (GB)
Abstract: 493,110. Gas-lighters. BIGGLESTON, H., and BIGGLESTON, D. H. March 31, 1937, No. 9197. [Class 75 (iii)] A gas torch 1 is connected by a flexible tube 2 to a supply pipe 4 and constitutes the operating lever for the gas cock 3, and a friction-wheel 12 is adapted, on opening the cock, to be operated with a snap action by means of a spring-biassed toggle 21-24 for igniting the torch. As shown, the torch is supported by a collar 9 on a slotted flange 10, or a projection, on the cock body with the nozzle in a hole 8 in an extension 7 of the cock plug 6, and the wheel 12 is adjustable angularly on a rotatable sleeve 11, the flint tube 19 being supported by a radial arm 18 on a retaining disc 17 secured to the part 7. On opening the cock by swinging the torch 1 upwardly, the sleeve 11 is held against movement by the toggle spring 24 until a stop 15 on the part 7 engages a projection 13 to turn the sleeve and move the toggle over the dead centre for actuating the wheel 12, the movement of the sleeve being stopped by a projection 14 engaging a stop 16 on the part 7. The projection 15 may be omitted and the torch 1 engage the projection 13. The gas jet and sparks impinge upon a deflector plate 28 on the cock body. The part 7 may be slotted, or air inlets may be provided in the torch, to prevent the torch being extinguished during withdrawal from the cock. The wheel 12 may be connected through a ratchet with the sleeve 11. The nozzle may be closed in the normal position by a pad 33 of asbestos-cement, rubber, &c. carried by a resilient metal tongue 32 secured to the projection 14 or to the valve body. In a modification, the combined gas cock and pyrophoric igniter are mounted at the nozzle end of the torch, the cock plug, or body, being connected to the torch and the cock body, or plug, being provided with a part for engaging in a fixed slot. Reference has been directed by the Comptroller to Specification 486,686.
Patent GB-1462829-A (GB)
Title: Firing control circuitry for a switchable electrical device
IPC: H02M1/088
Filed: 1974-11-15
Abstract: 1462829 Controlling thyristors SIEMENS AG 15 Nov 1974 [4 Dec 1973 20 Dec 1973] 49621/74 Heading H2F [Also in Division H3] Firing control circuitry for a switchable electrical device which may be a thyristor, having an anode, a cathode and a control electrode comprises a charging diode 2a and a storage capacitance 3 connected in series between two circuit points for connection respectively to the anode and cathode of the device so that the storage capacitance can be charged via the diode from voltage between the anode and cathode; the circuitry including an inductor 4, an auxiliary thyristor 5 and a firing capacitance 6 connected in series across the storage capacitor 3 so that the firing capacitance is charged when the auxiliary thyristor is fired and with the inductor and the firing capacitor forming part of a resonant circuit to quench the thyristor after it has been fired, and the circuit also includes a switch device 8 to control the transfer of energy from the firing capacitor 6 to the control electrode so that the device is made conductive when the switch device is actuated, the control electrode of the auxiliary thyristor 5 is connected so that firing occurs in dependence upon the voltage across the firing capacitance. There is preferably a voltage divider in parallel with the storage capacitor 3 formed by a resistance 11 and a constant voltage means such as a zener diode 13, the tap being connected to the control electrode of the auxiliary thyristor. A capacitor 12 may be connected in parallel with the zener diode and there may be a trigger diode 15 or unijunction transistor in series between the tap and the thyristor. Preferably the ratio of the storage capacitance to the firing capacitance is in the range from 1:50 to 1:100. The charging diode may form part of a bridge rectifier 2 as shown, or there may be a voltage doubler with one diode (2e, Fig. 2, not shown) acting as the charging diode. The switch means may be actuated in a contact-less manner, as for example by the use of an opto-electrical transducer 10 such as a photodiode. When the voltage across the thyristor is oscillating with a set period, the preferred value of the inductance 4 is such that the time to charge the firing capacitance 6 from the storage capacitance 3 is small in relation to the period.
Patent GB-1072849-A (GB)
Title: Carburettor throttle
IPC: F02M9/08
Filed: 1963-12-18
Abstract: 1,072,849. Throttles. GURTNER S.A. Dec.18, 1963 [Jan. 25, 1963], No.49981/63. Heading F1B. In a carburetter throttle in which a cylindrical throttle member 1, Fig. 1, has transverse notch 3 equal in width to the gas duct diameter, the rotational axis of the throttle member is displaced from the gas duct axis to provide a remaining solid portion which ensures closure of the gas duct when the throttle is in the closed position. The throttle is loaded by a spring 6 which engages in groove 7 and a groove 8 in member 9 engaged in recess 10 of housing cover 11. Member 9 is disengaged by a screwdriver to regulate the spring load. Throttle 1 is rotated by a cable which fits into groove 5.
Patent GB-1354455-A (GB)
Title: Methods of purifying effluents from the manufacture and bleaching  of wood pulp
IPC: C02F1/52
Filed: 1972-10-31
Abstract: 1354455 Purifying waste waters from wood pulp treatment DEGREMONT SOC GENERALE D'EPURATION ET D'ASSAINISSEMENT 31 Oct 1972 [3 Nov 1971] 50166/72 Heading C1C Waste waters from wood pulp treatment are purified by adding aluminium sulphate so as to settle a portion of the non-biodegradable matter contained in the waters, the resulting solution being flocculated by the presence of excess aluminium sulphate with the pH of the solution adjusted to 5À4 by the addition of soda or lime. The settled and flocculated matters are separated and treated to recover the aluminium sulphate. The final solution may be further purified by treatment with activated carbon. The above method may be carried out in the system shown in Fig. 1 wherein waste waters are mixed with the sulphate in settling tank 2. Solid matter is removed in decanter 5. The resulting solution is flocculated in tank 8 by adding soda or lime from tank 9. The flocculated solution passes to decanter 11 and purified waters 13 exit the system. The settled and flocculated solids, 6 and 12, are mixed and then dehydrated in 17. The solids may be incinerated in 19, the resulting ash being treated with sulphuric acid to regenerate to aluminium sulphate.
Patent GB-1262032-A (GB)
Title: Rectifier assembly
Inventor: COLE FREDERICK CHARLES
IPC: H01L25/03
Filed: 1970-10-22
Abstract: 1,262,032. Rectifier assembly. STANDARD TELEPHONES & CABLES Ltd. 22 Oct., 1970, No. 50189/70. Heading H1K. A rectifier assembly comprises a plurality of semi-conductor diodes 3a to 3e, stud mounted on a common disc 1 of electrically insulating, good heat conducting material, the diodes being series connected between two conducting plates 9, 12 which are parallel to, and on opposite sides of the disc 1. The disc may be of an alumina based ceramic, and have integral extensions 17, 18 which support the conducting plates, which may be of aluminium. A plurality of capacitors 14a to 14e may be provided, each in parallel with one of the diodes. The diodes may be located so as to have one face in a groove in one surface of the disc. One of the plates, 12, may function as a corona plate, and both extensions 17, 18 may be capable of threaded interconnection, 19, 20, in order to provide a stack of assemblies for a high voltage rectifier equipment.
Patent GB-1278524-A (GB)
Title: Mobile apparatus for laying and/or taking up the sleepers of railway track
IPC: E01B29/10
Filed: 1969-10-13
Abstract: 1278524 Relaying railway track F PLASSER 13 Oct 1969 [16 Oct 1968] 50192/69 Heading E1G In a railway track laying train of the type wherein a section of the new and/or old rails 2 is held raised by guides 7' while the old sleepers are picked up and/or new sleepers laid, as in Specifications 1077839 and 1278522 the sleepers are transferred to or from a transport truck (not shown) by a conveyer system which includes a short belt conveyer 8' carried by a turntable 8, whereby successive pairs of sleepers can be turned through 90‹ to or from their transverse laying disposition (as shown on conveyers 12) from or to a longitudinal transport disposition (as shown on conveyer 1). The conveyer system is carried by a frame 7 supported at one end by ballast-engaging wheels 9' and steerable endless tracks 9, and at the other end (not shown) by the track rails 2. In a laying operation the sleepers 3, which are longer than the turntable belt 8', are fed thereto by an inclined conveyer 1 communicating with the transport truck, and are removed therefrom by pairs of conveyers 12, 13 communicating with tiltable roller tracks 25 supplying single sleepers to a laying fork 5. The turntable can also be tilted between a horizontal and an inclined plane. The necessary raising, lowering, tilting and intermittent drives of the laying fork, the conveyers, and the turntable to effect sleeper transfer are controlled by switches and stops 26, 27, 28, 29, 30, 32, 33. The obliquity of a new sleeper - e.g. at curves - is determined by adjustable stops 31, while its transverse position is monitored by a feeler 32' of a control switch 32.
Patent GB-1527739-A (GB)
Title: Turbine shaft
IPC: F01D5/02
Filed: 1975-12-09
Abstract: 1527739 Securing turbine rotors on shafts GROUPE EUROPEEN POUR LA TECHNIQUE DES TURBINES A VAPEUR GETT 9 Dec 1975 [16 Dec 1974] 50511/75 Heading F2U  A turbine shaft comprises stepped lands 9, 10 interconnected by a cylindrical surface 31, toroidal surfaces 30, 32 and conical surfaces 28, 33 inclined at an angle of 30 to 60 degrees to the shaft axis, there being a turbine disc 21, 22 shrunk on to each land.
Patent GB-1240460-A (GB)
Title: Improvements relating to the production of photographic silver halide emulsions
Inventor: BORGINON HENDRIK ALFONS
IPC: G03C1/015
Filed: 1967-11-07
Abstract: 1,240,460. Production of photographic silver halide emulsions. AGFA-GEVAERT A.G. Oct. 3, 1968 [Nov. 7, 1967], No.50631/67. Heading G2C. A process for the production of a photographic silver halide material comprises carrying out at least one step of the preparation of the silver halide emulsion(s) and/or the coating thereof under reduced pressure. The reduced pressure is preferably lower than 100 mm Hg. The object of this invention is to retard or substantially inhibit the crystal growth of the silver halide grains, and is based on the fact that gases dissolved in an aqueous medium comprising dispersed silver halide promote the grain growth of the silver halide. Such gases are oxygen, nitrogen, carbon dioxide and helium or mixtures thereof such as air. The medium containing silver halide remains chemically unaffected when subjected to reduced pressure and this is particularly useful when all or part of the silver halide of the originally formed silver halide grains is converted into another type of silver halide without substantially changing the grain size (i.e. a socalled 'converted emulsion'). The inhibition of grain growth of silver halide grains is of major importance in cases where a fine grain silver halide emulsion of high resolving power and suitable contrast is required. Silver halide emulsion layers with fine grain silver halide are used in microcopying and the production of holograms.
Patent GB-1446932-A (GB)
Title: Scanning sysems for copying machines
IPC: G03B27/50
Filed: 1973-10-31
Abstract: 1446932 Line-by-line scanning DICK CO A B 31 Oct 1973 [2 Nov 1972] 50642/73 Heading G2A A line-by-line scanning photo-copier employs between the platen 14 and lens 26, two mirrors 22 and 23 which each rotate through a comparatively small angle (e.g. 30 degrees), in parallel relationship, one of the mirrors (mirror 23 as shown in Fig. 9) also being longitudinally moved during rotation to maintain constant the length of the light path. Two documents may be copied in quick succession using two alternative scanning systems, Fig. 3, having a common mirror 23 which is set in alternative positions by means of a rotary solenoid 65, Fig. 4 (not shown) coupled through two pairs of links and a diamond-shaped crank to the respective second mirror 22 or 34 by a clutch (47 or 61), and vertically moved by means of a fixedly mounted roller 100 and a cam slot 99 in a cam plate 98 integral with mirror 23. Mirror 22 or 23 is rotated about a pivot 37 or 51 by a telescopic connection to a carriage 68 or 86 selectively connected to an endless moving belt 72 by a clutch 70 or 88, the mirror being returned to its original position by a hydraulic cylinder 81 or 90. The speed of belt 72 may be varied (to alter the size of the image) by selecting a different diameter hub 78. In a modification Fig. 11 (not shown) the mirrors 32 and 34 have a common linkage system and separate cam-operated movement of mirrors 22 and 34.
Patent GB-1556261-A (GB)
Title: Bearing separator and sealing system for rock bit
IPC: E21B10/22
Filed: 1976-12-06
Abstract: The bearing capacity of a rotary rock bit is increased by providing a bearing separator and sealing system which maintains the cylindrical roller bearings in proper alignment without interfering with the integrity of the seal. A spacer unit is positioned around the bearing pin of the rock bit between the cutter member and the bearing pin. The spacer unit includes an annular body with a plurality of separator elements cantilevered from said annular body extending toward the outer end of the bearing pin. The cylindrical rollers are alternately positioned between the separator elements. The annular body of the spacer unit is located in the cone mouth of the cutter member. A seal member is located in the cone mouth of the cutter member between the rock bit body and the annular body of the spacer unit.
Patent GB-1417526-A (GB)
Title: Polyamide fibres
IPC: D01F6/60
Filed: 1973-11-01
Abstract: 1417526 Ultra-violet radiation resistant polyamide fibers E I DU FONT DE NEMOURS & CO 1 Nov 1973 [2 Nov 1972] 50778/73 Heading B5B Aromatic polyamide fibres having improved resistance to u.v. degradation are made by dry or wet spinning fibres from a suitable solution and washing but not drying the fibres, and heati ng the still wet fibres in an aqueous dispersion of an ultra-violet light screening material and drying the fibres. The u.v. light screening material is preferably a substituted benzotriazole, a substituted benzophenone or a substituted triazine used in an amount of 2-6% by wt. of the fibres. The fibres are such that the u.v. screening material is distributed throughout the fibre and no agglomerates thereof are greater than 0À01 microns.
Patent GB-1061122-A (GB)
Title: A sealing device for a roller bearing
Inventor: MCNICOLL DAVID
IPC: F16C19/36
Filed: 1963-12-24
Abstract: 1,061,122. Roller bearings; seals. TIMKEN ROLLER BEARING CO. Dec. 24, 1963, No. 50903/63. Addition to 1,042,878. Headings F2A and F2B. A roller bearing has a, closure member 16 comprising an inner flange 17 arranged on a rib 13 of the bearing inner ring, a radially extending body portion 18 folded back at its outer end 19 to form a bead, and an inwardly inclined outer flange 20, the end 21 of which has a running clearance with the rollers 14 and the raceway of the outer ring 10. As shown, an annular pad 22 of resilient material is bonded to the outer flange 20 and engages the end face of the outer ring 10 and the bore of the housing 11. The inner end face of the pad 22 may be undercut (Fig. 2, not shown) to provide a more resilient projection engaging the outer ring 10, or the pad 22 may be of channel section (Fig. 3, not shown). The pad may be impregnated with or covered with lubricant or may consist of grease or other lubricant which maintains the required shape. A flinger (27) (Fig. 4, not shown) may be included, the pad being located between the outer part (28) of the flinger and the outer flange (20).
Patent GB-1074389-A (GB)
Title: Improvements in or relating to nickel electro plating
Inventor: ODEKERKEN JULES MARIE
IPC: C25D5/14
Filed: 1964-12-15
Abstract: In electroplating a substrate with a composite Ni coating comprising at least three Ni layers which are applied one on top of the other, at least one intermediate Ni layer is deposited from an Ni bath containing a Te compound (e.g. an alkali metal tellurite) and for the rest having the same composition as the bath from which the top layer is deposited.  The Te containing bath may contain 2-200 mg/l Te calculated as the metal and may also contain Co.  Both the base Ni and top Ni layers may be deposited from a mat, semi-bright or bright Ni bath, e.g. the bath for the top Ni layer may be a normal bath containing sulphate and/or chloride and/or sulphamate to which brighteners may be added. Cr may be electroplated on the top Ni layer. The example is of electroplating degreased Fe plates using in sequence the following Ni baths all of which contain nickel sulphate and chloride and boric acid.  Additionally Bath I contains chloral hydrate and formaldehyde whereas Bath IIc contains butine-1, 4-diol, saccharine, sodium lauryl sulphate and sodium tellurite. Bath III is the same as Bath IIc but less the Te compound. Cr is electrodeposited on the Ni from a bath containing chromic acid and H2SO4.
Patent GB-1222299-A (GB)
Title: An improved apparatus for use in the reproduction of sheet originals
Inventor: GAME CHARLES
IPC: G03B27/20
Filed: 1969-10-20
Abstract: 1,222,299. Original holders. C . GAME . Oct.20, 1969. No.51333/69. HeadingG2A. Apparatus used in copying sheet originals comprises a supporting platform 10 carrying a blanket 12 of impervious flexible rubber and having an upstanding surround 14, the surround in turn supporting a clear glass pane 15 which makes an air-tight seal therewith, a suction duct 17 at one side of the blanket and an air-pressure duct 20 discharging below the blanket near the centre thereof. In use, the pane 15 is moved for a sheet original 21 to be placed on the blanket, the pane is replaced, and the cavity 22 formed by the pane, surround and blanket evacuated. As shown, air drawn from the cavity 22 is used to supply air under pressure beneath the blanket centre, thus preventing sag of the blanket and causing the whole area of the sheet original to bear against the glass plate 15. In another embodiment Fig.3 (not shown) an inflatable chamber (23) is located below, or formed integrally with, the blanket.
Patent GB-1078219-A (GB)
Title: Methods of preventing, controlling, and removing alluvium in cooling water systems
IPC: C02F5/10
Filed: 1965-12-03
Abstract: The continuous or periodic addition of certain polyimines to flowing water allows alluvial deposits or potential deposits to be flushed away as a flux.  The polyimines are obtained from monomers of general formula <FORM:1078219/C1/1> where R is hydrogen or alkyl of up to 4 carbon atom and R1 is R or hydroxyalkyl of up to 4 carbon atoms.