baber/WOPTO huggingface dataset:
Patent GB-725223-A (GB)
Title: Improvements in or relating to magnetic amplifiers
Inventor: RAU JOHN SHAW
IPC: H03F9/04
Filed: 1953-06-01
Abstract: 725,223. Magnetic amplifiers. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. June 1, 1953, No. 15159/53. Class 40 (4). In a push-pull magnetic amplifier with autoexcitation, a variable control voltage and a constant biasing voltage are both applied to the control windings. As shown in Fig. 1, the amplifier may comprise separate cores for each load winding 20, 22, 24, 26 and control winding 56, 58, 60, 62. Auto-excitation of each core is established by rectifiers 28, 30, 32, 34, while further rectifiers 36, 38 and 46, 48 provide D.C. outputs to the coils 40, 43 of a differential relay. The control voltage is applied at terminals 68, 69 to impedances 66, 67 and to the series-connected control windings which are so arranged that the windings 56, 58 and 60, 62 respectively augment and oppose the auto-excitation fluxes in the corresponding cores. A bias voltage connected across terminals 70, 72 effects a constant augmentation of all the core fluxes, and the amplifier outputs are balanced only for a particular value of control current. In a modification, Fig. 2, the load windings are energized from a centre-tapped transformer 110 so that rectifiers 100, 102, 104, 106 only are required to provide both auto-excitation and D.C. outputs. Use may also be made of two threelimbed cores, Fig. 3 (not shown), in place of the separate cores shown in Fig. 1.
Patent GB-149112-A (GB)
Title: Improvements in tables
Filed: 1919-06-17
Abstract: 149,112. Jones, E. June 17, 1919. Folding tables.-The folding legs of a table are pivoted to longitudinal rails and connected by links to blocks sliding under the table top and adapted to be locked in position when the legs are extended. As shown in sectional elevation in Fig. 1, and in underside plan view in Fig. 2, the locking-device comprises a clamping-part on the sliding block 15 adapted to be held in a recess 18 in the rail 11 by a nut 14 on the bolt 13 by which the link 12 is pivoted to the sliding block. In a modification the locking is effected by a locking- block carried by an arm pivoted in the guidegroove 16 in the rail 11.
Patent GB-240223-A (GB)
Title: The production of new arsinic acids
IPC: C07F9/74
Filed: 1924-06-24
Abstract: Benzoylamino-phenol arsinic acids are prepared by treating an o-aminophenol arsinic acid with benzoyl chloride.  The products are used for the treatment of diseases caused by spiroch t  and trypanosomes.  Examples are given of the benzoylation of 3-amino-4-oxybenzene-1-arsinic acid and of 4-amino-3-oxybenzene-1-arsinic acid.  Specification 25493/12 is referred to.
Patent GB-571708-A (GB)
Title: Improvements in or relating to the production of linear polyamides
IPC: C08G69/42
Filed: 1943-09-17
Abstract: Polyamides are prepared by heating a linear polyamide forming composition comprising at least one dicarboxylic acid having as a lateral substituent a mercapto group removed by at least 3 atoms from each of its amide-forming groups and continuing the heating until a fibre-forming product is formed.  The polyamide-forming compositions comprise a diamine or a monoaminomonohydric alcohol with a dicarboxylic acid or its amide-forming derivative and they are heated to 150-225 DEG  C. in a closed or open reaction vessel in presence or absence of a solvent or diluent.  Interpolyamides can be formed by using a diamine and a dicarboxylic acid not containing a lateral substituent in admixture with the mercapto body.  In examples, the lactone of \su-mercapto-pimelic acid is heated with (1) hexamethylene diamine, (2) hexamethylene diamine and adipic acid, (3) and (4) hexamethylene diamine and sebacic acid, (5) hexamethylene diamine and pimelic acid.  Suitable solvents are phenol, m-cresol, and o-hydroxy-diphenyl, which may be removed by distillation, or the polyamide may be precipitated by, e.g. ethyl acetate, acetone or alcohol.  Catalysts are inorganic materials of alkaline reaction such as oxides, carbonates, and acidic materials such as halogen salts of polyvalent elements and phosphoric acid.  Mercapto dicarboxylic acids are \su-mercaptosuberic acid, d -mercaptoazelaic acid, d -mercaptosebacic acid, and e -mercaptoundecanedioic acid. p  Diamines are ethylenediamine, trimethylenediamine, 1 : 4-diamino-cyclohexane, xylylenediamine, the substances represented by the formul H2N-(CH2)2-O-(CH2) 2-O-(CH2)2NH2, H2N-(CH2)3-O-(CH2)3NH2, H2N-(CH2)3-S-(CH2)3-NH2, 1 : 10 - diamino-1 : 10-dimethyldecane, 1 : 12-diaminooctadecane, m - phenylenediamine, N : N1 - di - methyl-hexamethylenediamine, 4 : 41-diaminodiphenylmethane and H2N-(CH2)3-NCH3-(CH2) 3NH2.  Dicarboxylic acids are azelaic, terephthalic, isophthalic, p-phenylenediacetic, HOOC-(CH2)3-S-(CH2)3-COOH, diglycollic, phenylolpropane diacetic acid and their amide-forming derivatives.  Amide-forming derivatives of the dicarboxylic acid are acids, anhydrides, lactones, chlorides, amides, and nitriles.  Viscosity stable polyamides can be prepared by using a small excess of the diamine or dicarboxylic acid or by incorporating a little monoamine or monocarboxylic acid, e.g. acetic acid, 2-ethyl-hexylamine, and ethyl butyrate.  The polyamides may be treated with an oxidizing agent, a di-isocyanate or a dihalide to modify its properties.  Oxidizing agents specified are halogens, oxides of nitrogen, potassium permanganate, nitrosyl chloride, hydrogen peroxide and air, and the irradiation by ultra-violet light can be employed for this purpose.  The mercapto dicarboxylic acids are obtained by hydrogenating the corresponding keto acids in the presence of sulphur and a cobalt polysulphide catalyst.
Patent GB-981146-A (GB)
Title: Filter element and method of making same
IPC: B01D29/11
Filed: 1963-04-18
Abstract: 981,146. Filters for liquids or gases. ROCKWELL-STANDARD CORPORATION. April 18, 1963 [May 7, 1962], No. 15275/63. Headings B1D and BIT. An axially-corrugated cylinder (not shown) is formed from a length of fine wire mesh and is then arranged in a vertical die press with its axis vertical, after which the die is operated to produce from the cylinder an annulus such as 43a, Figs. 3 and 4, having radial corrugations and axially-spaced, flattened, peripheries. The annuli are assembled in pairs with outer peripheries secured together by a strip 56 and inner peripheries reinforced separately by strips 49, 55 respectively, and with an apertured spacer ring 57 between them. Fig. 1 shows a complete filter.
Patent GB-1473634-A (GB)
Title: Receiving programme-presetting system for a television re ceiver
IPC: H04N5/44
Filed: 1975-04-14
Abstract: 1473634 Television programme selector; time-controlled receiver TOKYO SHIBAURA ELECTRIC CO Ltd 14 April 1975 [19 April 1974] 15287/75 Headings H3Q and H4T  An arrangement which can be set up by the user to select automatically a desired sequence of television programmes includes a store having addresses that correspond to predetermined positions on the screen of the receiver for storage of data defining the time and channel of the desired programmes. An addressing circuit (Fig. 10, not shown) is responsive to the line and frame sync. pulses of the receiver to provide a signal commanding read-out of an address when the corresponding position on the screen is reached during the scan. The data read out control means providing a legible display of the programme sequence, which may be altered as desired. During such display the normal video image is suppressed. In the embodiment shown in Fig. 3 channel selector push-buttons 32 are arranged as are the numerals of a clock dial and can be used for channel selection in the normal manner. On the other hand, when a programme sequence is to be set up, pressing a button 32 causes data to be set into the store (Fig. 4, not shown) at an address corresponding to the position on the screen 31 indicated by a marker 41 which is movable to successive predetermined positions by successive operation of a switch 37. The first button 32 to be pressed causes the storage and display of the hour of the desired programme (12 is added automatically if a switch 35 is set to p.m.), the second button pressed stores the minutes past the hour (e.g. pressing the button marked 8 selects a programme at 40 minutes past the hour) and the third button pressed stores the channel number. The complete programme sequence is displayed on the receiver screen 31. If viewing is to cease at a certain time the third button pressed would be the central OFF button 33. In addition the present time may be displayed (40). Once the sequence has been stored the stored times are automatically compared (75) with the present time and when there is identity the corresponding programme channel is selected by control of a vari-cap diode 22 in a tuning circuit, Fig. 1, by way of a voltage applied to the relevant channel terminal CH1, CH2, ... The tuning circuit comprises memories M1, M2, ... and switches SW1, SW2, ... which correspond to the pushbuttons 32 in Fig. 3. Operation of any switch applies the appropriate potential to the vari-cap diode 22 and sets the associated memory. The memories are so interconnected that setting any one memory causes resetting of any other set memory. The channels can therefore be selected in random order. In addition, by applying a sequence of pulses to input FWP the memories are set in turn to select the channels in the cyclic order 1, 2, 3 .. By applying pulses to REVP the channels are selected in the reverse order.
Patent GB-509187-A (GB)
Title: Improvements in or relating to belt conveyors
IPC: B65G37/00
Filed: 1938-05-23
Abstract: 509,187. Endless - belt conveyers. IGRANIC ELECTRIC CO., Ltd. May 23, 1938, No. 15298. Convention date, May 22, 1937. [Class 78 (i)] In a conveyer driven from a shaft extending longitudinally of it, the shaft is coupled to a roller, or rollers, on which the belt runs and which is, or are, mounted on a detachable unit structure. The unit structures CU<1> ... CU<4>. Fig. 1, are situated at the junctions of a system of conveyers and elevators A ... E by which newspapers are carried from a press conveyer A to a delivery table conveyer B. In each section of the system the newspapers are carried by helical spring belts, and in the elevating sections C, E the newspapers are gripped between opposed pairs of such belts, section C being provided with two sets of belts 1, 2 and section E having four sets of belts 3, 4 and 5, 6. The horizontal section D comprises three belts 7, 8, 9. Each of the structures CU' ... CU<4> includes driving rollers R', R<2>, R<3>, the latter two of which are connected by deflector belts 10. The structures are connected detachably to tubular longitudinal members 43, Fig. 2, which form the framework of the system. These members support also driving rollers R<4> situated at the junctions of the belts 3 ... 9. Each unit structure has a pair of driving shafts 11, 12 which are coupled by bevel gears 13 and drive the rollers R<3>, R<1> and R<2> through worm gearing 14, 17, respectively. The shafts of adjacent unit structures are connected by a series of shafts which are connected together by flexible couplings FC, and some of which are formed with worm gearing 20 for driving the rollers R<4>. The shaft 11 of the unit CU<1> may be driven from the press or from a separate driving motor.
Patent GB-481007-A (GB)
Title: Pressure varying device for hydraulically controlled change speed gear clutches
IPC: F15B13/02
Filed: 1937-06-02
Abstract: 481,007. Controlling change - speed gearing. KEGRESSE, A. June 2, 1937, No. 15351. Convention date, June 10, 1936. [Class 80 (ii)] A pressure-varying device for hydraulic change-speed clutches in an automatic changespeed gear is mounted in the pipe line, connecting the pump to the change-speed gear, and comprises a fixed cylinder with ported walls for the passage of the fluid and enclosed in a chamber, a ported sleeve adapted to rotate on said cylinder and operated manually from the driving position and a cylindrical valve sliding in the interior of said cylinder and moved by the pressure of the fluid against the action of a spring. A control handle mounted on the steering column moves over a graduated sector plate and is connected to an arm 8, Fig. 3, on a ported sleeve 10 rotatable over a cylinder 14 fixed in a casing 9. The sleeve 10 has ports 30 adapted to register with ports 31 in cylinder 14, and also has a large port 32, Figs. 3, 5, adapted to uncover ports 33, 34, Figs. 3, 6, in the cylinder 14. Between the sleeve 10 and casing 9 is an annular chamber 12 with an outlet 13. Within the cylinder 14 is slidable a piston 15 loaded by a calibrated spring 19, and having holes 17. and an external groove 16, a stop for the piston being provided at 18. A valve 20 in the end of the casing 9 is held on its seat by a spring 21 and an outlet 23 is provided in connection with this valve. Liquid under pressure enters at 24 and is conveyed through 25 to the gear-change mechanism. The sleeve 10 is adapted to be held in different positions for neutral, first, second, &c. speeds by a spring plunger 26. When the control lever is at neutral, the ports 30, 31 register and liquid passes from 24 to 13, no pressure being produced in conduit 25. If the lever is moved to " first " position the ports 31 are no longer uncovered and the fluid pressure increases and forces back the piston 15 to uncover the port 33 to produce the pressure in conduit 25 necessary to shift the gear to first speed. When the lever is moved to " second " the sleeve 14 is rotated so that the large opening 32 uncovers only a part of opening 33 but the whole of opening 34. The piston is now moved further to the right to close opening 33 and uncover opening 34 thus giving a higher pressure than for first speed so as to bring in second speed. For third speed when both the openings 33, 34 are partly covered by the edge of port 32, the pressure rises rapidly and ultimately opens the valve 20, the pressure then being at the maximum to give third speed. Whatever the position of the control lever, the working will be automatic through a certain range, but by further rotation of the control lever, beyond " third " the sleeve 10 is brought to a position intermediate that for third speed and that in which the openings 33, 34 are entirely closed, and the gear changing becomes fully automatic, in which the duration of the transmission on each of the speeds is adjustable by moving the lever. The control also gives a degree of pre-selectivity.
Patent GB-665024-A (GB)
Title: A process for the manufacture of rubber articles
IPC: C08J5/04
Filed: 1949-06-09
Abstract: 665,024. Fibrous compositions; vulcanizing rubber compositions. RUBBER STICHTING. June 9, 1949 [Aug. 6, 1948 ; Jan. 18, 1949], Nos. 15373/49, 15374/49. Class 70 Compositions comprising rubber and fibrous vegetable material in a quantity at least equal to that of the rubber are vulcanized at room temperature or at a temperature not greater than 50‹C by adding an ultra-accelerator and an amine of low volatility and having a dissociation constant greater than 10-<SP>5</SP> such as di normal butylamine and triethanolamine. The ultra accelerators may be dithiocarbamates such as butylzimate, piperidine pentamethylene dithiocarbonate and the xanthogenates. The final mixture may be obtained by mixing together two separate compositions which together contain all the necessary ingredients but which separately are unable to vulcanize under the circumstances prevailing during compounding. In an example two compositions each containing rubber, zinc oxide, ozocerite, kaolin, and wood flour were prepared, and to the one was added iron oxide, accelerator and butylamine and to the other sulphur. The compositions were mixed when required and then moulded, and were vulcanized on standing two-four weeks. In a second example a mixture consisting of rubber, zinc oxide, kaolin, butylzimate, sulphur, pigment, straw, paraffin wax and triethanolamine was similarly treated. Other waxes such as beeswax and carnauba wax may be added.
Patent GB-353147-A (GB)
Title: Improvements in controlling devices for wireless apparatus
IPC: H03J1/08
Filed: 1930-05-20
Abstract: 353,147. Adjusting wireless apparatus. DANDRIDGE, G. F. J., Biddenden, Falmouth Avenue, Highams Park, London. May 20, 1930, No. 15476. [Class 37.] A control device for radio tuning elements comprises a slow motion gear for the rotors and a separate band indicator wound upon a roller driven at higher speed by the tuning adjustment. As shown, gauged condensers a, a<1> are controlled by worm gearing e, e<1> and a band indicator wound on drums i, k is driven from the rotor spindle through gearing h, h<2>, i<1>. The drum k projects into a protuberance m<1>, Fig. 3, on the panel, a sliding shutter l<1> being provided so that access to the band may be had for writing thereon. The band is narrowed at one or both ends in order that a catch n<1> may engage a stop n<2> on the adjustment spindle f in one limit of rotational movement, a slot on the catch blocking the stop in the opposite direction until the free end n of the catch lever is rocked by the band j. The indicator mechanism may be mounted as a detachable unit. The condenser shafts may be set vertically, and separate worm gear may be employed for the tuning and indicator, the indicator worm being two-start.
Patent GB-319807-A (GB)
Title: An improved process for the production of soap threads
IPC: C11D13/20
Filed: 1928-05-26
Abstract: 319,807. Welter, A. May 26, 1928. Soap threads are formed by pressing through nozzles of less than 1.5 m.m. diameter a solidified mixture of paste or curd soap with an alkali salt or salts other than soda. The mixture may also contain (1) fat-solvents, e.g. hydrocarbons, hydrogenized hydrocarbons or phenols or cresols, halogenated hydrocarbons, and sulpho-aromatic compounds; (2) ethereal oils; (3) difficultly saponifiable hydrocarbons, e.g. petroleum jelly, paraffin wax, montan wax, beeswax, and ceresine; (4) fillers, e.g. clay, talc, wood meal, potato flour, glue, and oxy- or hydro-cellulose. Alkali salts specified are :-potash, sodium or potassium bicarbonate, sulphate, phosphate, silicate, borate, acetate, nitrate, and #-naphthalene- or other aromatic sulphonate, and persalts, e.g. sodium perborate preferably with protective colloids, e.g. waterglass. In one example, 500 kg. of liquid curd soap, 25 kg. of sodium bicarbonate, and 50 kg. of sodium metaborate are stirred together, allowed to set, homogenized, and pressed through 0.6-0.7 m.m. nozzles.
Patent GB-156534-A (GB)
IPC: B41K3/12
Abstract: 156,534. Paragon Kassenblock Co. Ges. Aug. 11, 1916, [Convention date]. Right to Patent relinquished. Rotary machines; number-printing apparatus. -A rotary printing-machine for printing sales books having original and duplicate sheets consists of a grouped arrangement of number-printing couples with a number of sheet-collecting devices, the couples being arranged so that they can be divided into sections, each with a sheet-collecting device, so that one or more webs may be printed to produce sales books of different kinds, all the couples of the machine being utilised. Fig. 1 shows one form of machine in use for printing on one web, and Fig. 3, the same machine printing on three webs simultaneously, sheet-collecting devices being arranged at the points c, d, and e. Two or four webs may also be printed by the machine, in the first case, each web using eight couples, and in the second case four couples.
Patent GB-1043474-A (GB)
Title: Automatic exposure device for photographic cameras
IPC: G03B7/00
Filed: 1965-04-13
Abstract: 1,043,474. Automatic exposure control. PRONTOR-WERK ALFRED GAUTHER G.m.b.H. April 13, 1965 [May 23, 1964], No. 15702/65. Heading G2A. An automatic exposure control has an electronic control circuit, Fig. 1 (not shown) which includes a test lamp 5, Fig. 3, by means of which the condition of a battery 1 Fig. 1 (not shown) may be checked. The test lamp 5 Fig. 3 is energized through a switch 6 and can be viewed through eyepieces 9, 12. The eyepiece 9 has a grey filter 10 of such density that the test lamp 5 can be seen so long as the battery voltage is above an admissible level. The eyepiece 12 allows the test lamp to be viewed to ascertain whether it is lit. Fibre optics 15, 16, Fig. 4 (not shown) may connect the lamp and eyepieces when fitted at separated points.
Patent GB-1118775-A (GB)
Title: Gear apparatus
IPC: F16H57/023
Filed: 1966-04-12
Abstract: 1,118,775. Toothed gearing. H. G. C. FAIRWEATHER (SINGER CO.). 12 April, 1966, No. 15881/66. Heading F2Q. To enable an idler gear 36 to be meshed correctly with two other gears (not shown) it is journalled on a sleeve 40 having a bore 40<SP>1</SP> greater than the diameter of a part 38 of a stud 26 non-rotatably secured in a fixed frame 30 by a grub screw 28, the sleeve being clamped between a flange 34 of the stud and a washer 42 by tightening a nut 44 when correct mesh of the gears has been obtained.
Patent GB-722746-A (GB)
Title: Surface active compounds derived from higher ª‡, ª‰ alkylene oxides
Inventor: LUNDSTED LESTER GORDON
IPC: D06P1/613
Filed: 1952-06-24
Abstract: A surface-active polymer is made by condensing one or more higher alkylene oxides containing at least 4 carbon atoms with an organic compound containing a plurality of active hydrogen atoms to produce a hydrophobic polymer having a molecular weight of at least 500, as determined by hydroxyl number, and condensing sufficient ethylene oxide with this polymer to produce a surface-active polymer containing 20-90 per cent by weight of oxyethylene groups.  Specified examples of active hydrogen atoms are those in hydroxyl, carboxyl, amide, sulphonamide, amine and mercaptan groups.  The higher alkylene oxides used have the formula <FORM:0722746/IV (a)/1> where R1, R2, R3 and R4 are hydrogen an aliphatic radical or an aromatic radical together containing at least 2 carbon atoms.  The term "aliphatic radical" includes open chain and cyclic radicals which may contain ethylenic and/or acetylenic unsaturation.  Further, two R groups on adjacent carbon atoms may be members of a single alkylene ring.  The aromatic radical may be a phenyl, naphthyl or biphenyl radical. Any or all of the R groups may be substituted by groups not containing active hydrogen atoms, e.g. chlor, bromo, nitro or alkoxy groups. Specified higher alkylene oxides are amylene, cyclohexene, styrene, octene, 1,2-butylene, 2,3-butylene, isobutylene and butadiene oxides. In examples surface-active agents are made by reacting ethylene oxide with hydrophobic polymers obtained by reacting 1,2-propylene glycol with 1,2-butylene oxide, butadiene monoxide, styrene oxide or cyclohexene oxide.  The hydrophobic polymer is made by passing the higher alkylene oxide into a mixture of propylene glycol and caustic soda while heating to 115-185 DEG  C.  Reaction may be performed in more than one stage with removal of water and unreacted higher alkylene oxide between each stage.  Ethylene oxide is then passed into the hydrophobic polymer while heating to 135-185 DEG  C.