baber/WOPTO huggingface dataset:
Patent GB-1471762-A (GB)
Title: Master cylinder assemblies for vehicle hydraulic braking  systems
IPC: B60T13/12
Filed: 1974-02-13
Abstract: 1471762 Anti-skid hydraulic brake boosters GIRLING Ltd 28 Jan 1975 [13 Feb 1974 4 June 1974 30 Nov 1974] 06447/74 24597/74 and 51962/74 Heading F2F In a master cylinder assembly comprising a pedal-operated value assembly 34, 36, for controlling a supply of pressure fluid (in chamber 28) to a power chamber 13 on the opposite side of a first piston 5/59 to a pressure space 17 with an outlet 18 to a wheel brake, a second piston 16, operating in the opposite direction to the 1st piston is provided actuatable by the pedal to generate fluid pressure in the space 17. The second piston 16 is normally inoperative due to the clearance between a shoulder 26 on the piston and a plate 24 actuated by the pedal, but should the pressure fluid supply fail the brakes can be applied without the seal drag normally present from the booster means. Preferably the boost pressure is supplied to a plurality of respective pressure spaces 17 for individual front wheels and the rear wheels and the pivotally mounted equalizing plate 24 actuates respective second cylinders for the front wheels at least. In operation on initial pedal movement of rod 3 a valve member 34 closes bore 35 leading through passage 37 to a fluid reservoir. On further movement an extension of the member 34 lifts a ball 36 from its seat to connect the pressure chamber 28 through passage 43, antiskid valve 50, and inlet 19 to the left hand end of piston 5 and the space 13. This moves the pistons 5 and 59 (which may be integral) to close the recuperation valve 21 and pressurize the space 17 and hence a brake actuator. The solenoid operated anti-skid valve 50 is responsive to deceleration of the corresponding braked wheel to move the valve ball 53 to close the space 13 from the pressure supply passage 43, and connect it to a reservoir to de-energize the brake. In a modification (Fig. 3) pressure fluid is supplied to a chamber 46 of larger effective area than the space 13 on sufficient deceleration to move the first piston 5 to the left to relieve the braking pressure. In further modifications (Figs. 6 and 7, not shown) the second piston has longitudinal bores (75), (76) leading to ports 18, 20 connected by flexible pipes to a brake actuator and a reservoir respectively and (Fig. 11, not shown) the second piston 16 is hollow and has a head at its right hand end incorporating a recuperation valve (21) and ports 18, 20 connected again to flexible pipes. In Fig. 7 the pressure chamber (13) is constituted by a stepped piston (64) mounted around the piston (5) and abutting a shoulder thereof. To provide feel a rubber spring 97 (Fig. 13) may be enclosed within telescopic members between the pedal rod 95 and an equalizing plate 82.
Patent GB-674664-A (GB)
Title: Improvements in or relating to power transmission
IPC: F16D11/10
Filed: 1950-03-15
Abstract: 674,664. Clutches. BORG-WARNER CORPORATION. March 15. 1950 [March 18, 1949], No. 6488/50. Class 80 (ii). In order to prevent undesired disengagement due to camming action in a sliding dog clutch, such as an internally toothed sleeve 22 co-operating with a toothed gear member 30, the member 30 is formed in two parts 32, 34 connected by a coupling 50, 54 allowing a certain amount of universal movement, the part 32 carrying the teeth for engaging with the sleeve 22..
Patent GB-162868-A (GB)
Title: Improvements relating to sparking plugs for internal combustion engines
IPC: H01T13/36
Filed: 1920-03-04
Abstract: 162,868. Hopps, B., and Lodge, A. M. March 4, 1920. Sparking-plugs. - Gas-tightness is secured by the use of a number of superimposed washers a, of such a cross-section that, under pressure, the internal and external peripheries are forced tightly against the insulator and the body of the plug.
Patent GB-636714-A (GB)
Title: Improvements in electrically heated soldering irons
IPC: B23K3/03
Filed: 1948-03-03
Abstract: 636,714. Soldering-irons. SENIOR, A. J. March 3, 1948, Nos. 6666, 6667, 6668 and 6669. Convention dates, Feb. 22, 1944, May 24, 1944, Nov. 17, 1944, and Nov. 21, 1944. Drawings to Specification. [Class 83 (iv)] The subject-matter of the Specification is substantially the same as that described in Specification 589,892. It is, however, also stated that the stand may be integral with or secured to the handle.
Patent GB-1420565-A (GB)
Title: Production of metal fluorides from fluorilicic acid
IPC: C01G43/06
Filed: 1974-02-14
Abstract: 1420565 Metal fluorides BAYER AG 14 Feb 1974 [17 Feb 1973] 6770/74 Heading C1A Metal fluorides (including oxyfluorides and hydroxyfluorides) are prepared by reacting metal oxides, hydroxides, carbonates or mixtures thereof with aqueous 10-45% by wt. fluosilicic acid in a 1-20% excess over stoichiometric at elevated temperatures and corresponding pressures whereby gaseous silicon tetrafluoride is liberated and removed in the gaseous form. The remaining HF in solution combines with the metal compound producing a metal fluoride which is recovered from the solution. Possibly fluorides which may be prepared include those of Li, Mg, Ca, Si, Ba, Ra, Al, V, Mn, Cr, Fe, Co, Ni, rare earths and actinides. The preferred metals are Al, Ca, Cr and U. If desired, the filtrate from the fluoride separation step, and/or the silicon tetrafluoride which is blown-off from the pressure reaction may be recycled either directly or via a spent gas wash from a phosphoric acid production process, in which the said wash is used as a source of hydrofluoric and silicofluoric acids.
Patent GB-448000-A (GB)
Title: Improvements in or relating to the manufacture of cigarettes
IPC: A24C5/52
Filed: 1935-03-04
Abstract: 448,000. Cigarette-making machines. MAY, R. F., 9, Manor Road. Potters Bar, Middlesex. March 4, 1935, No. 6791. [Class 130] In cigarette-making machines a continuous tobacco-filler 1 is cut into lengths which are axially accelerated to leave spaces into which filter-tips are deposited before the composite filler is wrapped. An axially reciprocable tubular or trough-shaped member 4 mounted on a carriage 8 receives the filling rod 1 and is formed with a transverse slot 5 to accommodate a travelling cutter 6. The member 4 is moved to the left by a tension spring 22 as far as a stop 23, but is returned by an arm 24 on the carriage 8. A cam-actuated accelerating member 9, concave and ribbed on its lower side, advances the cut portion relatively to the remainder, and in the gap a filter-tip 16 is deposited from the feeding-device 15, being inserted by a plunger 20 and held by a spring 18. The space is somewhat longer than the tip, but the accelerating movement produces a closing-up effect. The severed filling and associated tip are forwarded between rollers 12 and wrapped in the paper strip 13. Single or double-length tips may be inserted. Specification 426,819 is referred to.
Patent GB-244966-A (GB)
Title: Improvements in and relating to folding cases for display cards for small articles
IPC: G09F1/06
Filed: 1925-03-12
Abstract: 244,966. Waldes, H. March 12, 1925. Card cases.-In a folding case for display cards for small articles of the kind which comprises covers 1, Fig. 1, having flexible connections 2 and inturned flaps 3 for holding the cards, the flaps are provided with slits 5 through which the ends of the display cards 4 are inserted. In a modified form, the covers have at one edge flaps with slits therein and each display card is made in one piece with the cover, being bent inwards at one end and inserted through the slit in the flap at the other end.
Patent GB-660390-A (GB)
Title: Method for the neutralisation of acid calcium nitrate solutions or calcium nitrate melts containing ions of phosphate
IPC: C01F11/38
Filed: 1949-03-14
Abstract: In the neutralization of solutions or melts of acid calcium nitrate containing phosphate ions, such as obtained on the treatment of raw phosphate with nitric acid, a part of the solution is neutralized with a solution of an inorganic base, e.g. quick lime, calcium hydroxide, sodium hydroxide, ammonia, to a pH of at least 2.5, preferably 3.0-3.5, whereupon further neutralization is effected by adding the acid solution and calcium carbonate, preferably continuously, to the preneutralized part of the solution.  After neutralization, say to pH 4, the solution may be further neutralized to pH 6 by ammonia.  If highly acid calcium nitrate solutions are employed, say of pH=-1, the main part of the free acid may be neutralized to pH 0.5-1.5 with powdered calcium carbonate prior to the addition of the solution of the inorganic base.  The calcium carbonate may be added as a suspension in the finally neutralized solution.
Patent GB-1494559-A (GB)
Title: Electromagnetic conduction pump
IPC: H02K44/02
Filed: 1975-02-19
Abstract: 1494559 Pumps operating by electromagnetic interaction with fluids GROUPEMENT POUR LES ACTIVITES ATOMIQUES ET AVANCEES 19 Feb 1975 [21 Feb 1974] 6959/75 Heading H2A In an electromagnetic conduction pump of the type in which the current is induced by transformer action in a coil 12 containing liquid metal the same as that to be pumped, a bar 14 of a material having an electrical conductivity substantially higher than that of the liquid metal is immersed in the liquid metal in the coil. This construction is designed to overcome problems in pumping liquid metals of low electrical conductivity. Thus where the liquid metal is mercury, the bar 14 may be a copper tape. The casing 13 of the coil 12 may be made of ceramic insulating material, of synthetic insulating material or of austenitic stainless steel.
Patent GB-928876-A (GB)
Title: Improvements in or relating to sealing devices
IPC: F16L21/025
Filed: 1962-02-22
Abstract: 928,876. Joint-making packing. FORSHEDA GUMMIFABRIK A.B. Feb. 22, 1962 [Feb. 27, 1961], No. 7007/62. Class 122 (3). [Also in Group XXVIII] A spigot and socket pipe joint comprises an elastic sealing ring 1 which is compressed between the two pipe ends 2, 3 and, in its free state, is of circular cross-section with an integral pointed projection 4 whose sides are tangents to the circular cross-section. The ring 1 is initially placed in tension on the inner pipe end 2, as shown in dash lines on the right of Fig. 1, and rolls along the pipe when the joint is made by inserting one pipe within the other.
Patent GB-492103-A (GB)
Title: Improvements in electrical impendance networks
IPC: H03H7/09
Filed: 1937-03-11
Abstract: 492,103. Multiplex systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. March 11, 1937, No. 7200. Convention date, April 23, 1936. Addition to 417,386. [Class 40 (iv)] [Also in Group XL] In a network comprising a differential repeating coil T and two inverse arms F, F<1>, these arms are made up of series-connected components having impedances F<1> ... F4 and shunt-connected components having impedances F<1>1 ... F<1>4. These impedances are inverse in pairs, so that K<2>=F1.F<1>1 = F2.F<1>2 ... where K is a resistance, while F1=F<1>1 approximately within the pass range of F1, F<1>1; and outside the pass ranges of the individual filters F1, F2 ... are infinite, while F<1>1, F<1>2 ... are zero. Corresponding components, such as F1 and F<1>1, have the same pass range, and may be terminated at their right-hand ends by corresponding sending and receiving instruments, while transmission lines are connected to the terminals 1, 2 and 3, 4, Fig. 1 (not shown). In that case, carrier currents lying within the pass range of the filters F, F<1> distribute themselves to the appropriate sending and receiving instruments, and the bridge is balanced within the pass range of the component filters, so that only signals whose frequency lies outside that range can pass between the line at 1, 2 and that at 3, 4. In the modification shown in Fig. 2, however, the outer terminals of the filters may be connected in parallel as shown in the case of F4, F<1>4, or in series as in the case of F3, F<1>3, to instruments such as Ap, As; or in order that the connections may be correctly matched, the outer terminals may be connected in adjacent arms (as in the case of F2, F<1>2) or in diagonals (as in the case of F1, F<1>1) of repeatercoil bridges associated with instruments or circuits A1, A2, R1, R2.
Patent GB-222044-A (GB)
Title: Improvements in methods of and compositions for soldering
IPC: B23K35/36
Filed: 1924-03-21
Abstract: 222,044. Western Electric Co., Ltd., (Western Electric Co., Inc.). March 21, 1924. Paints and varnishes, removing.-A soldering composition comprises a mixture of a flux, such as resin, and an enamel solvent such as naphthalene, anthracene or beta-naphthol. The composition may form a core enclosed in solder. In an example, the mixture consists of 1 part of naphthalene and 2 parts of resin.
Patent GB-565933-A (GB)
Title: Improvements in or relating to braces for personal wear
IPC: A41F3/00
Filed: 1943-05-07
Abstract: 565,933. Braces for trousers. SMITH, M. G. May 7, 1943, No. 7251. Drawings to Specification. [Class 141] A series of separate removable and replaceable clips or bands of metal, plastic or other material is placed upon each of the main supporting members of a pair of braces so that the movable adjustment means by which the length of braces is adjusted may be set to predetermined length for use with a particular pair of a number of pairs of trousers.
Patent GB-1408257-A (GB)
Title: Electric motor drive circuit arrangements
IPC: G04C3/14
Filed: 1974-02-18
Abstract: 1408257 Motor control; inverting KIENZLE UHRENFABRIKEN GmbH 18 Feb 1974 [19 Feb 1973] 7317/74 Headings H2F and H2J A motor drive circuit for a stepping motor comprises two pairs of series-connected transistors, each pair being connected across a D.C. source as shown, the transistors of each pair being of opposite conductivity type, a capacitor and a driving coil of a stepping motor connected between the junctions of the two pairs of transistors and means controlling the transistors to charge the capacitor periodically in opposite directions and to discharge the capacitor through the drive coil after each charging period. The objective is to provide pulses through the coil, the starting voltage of each pulse being double that of the source voltage. In operation, transistors TR1, TR4 are enabled, the capacitor voltage at that instant being equal to the source voltage, U. #  A voltage U m  = 2U #  is thereby produced across the coil and current flows therein which also reverses the polarity of the capacitor voltage to (-U # ). There follows a period when all transistors are off and (-U # ) is held on the capacitor. Transistors TR2 and TR3 are then switched on and a voltage (-2U # ) is present across the coil. In a modification, Fig. 4 (not shown), an additional pair of transistors is similarly placed with its junction connected between the capacitor and coil. These are enabled by auxiliary pulses together with corresponding transistors of the first pair TR1, TR2, to ensure the capacitor is fully reverse changed.
Patent GB-556979-A (GB)
Title: Improvements in or relating to paint boxes
IPC: B44D3/04
Filed: 1942-05-29
Abstract: 556,979. Paint boxes. GOWLAND, J. P. May 29, 1942, No. 7323. [Class 11] A paint box is in the form of a block 1 of wood, fibre, casein, glass, &c. which has cups 3 for colour tablets and one or more recesses 5 for brushes or to serve as a palette, and is provided with a cover 6 which may form a palette when inverted. The cover may be hinged, or may be in the form of a sliding sheath or tube of cardboard &c. The block may be formed of laminated material.
Patent GB-1091875-A (GB)
Title: A furnace installation designed for the incineration of refuse or other waste
IPC: F23G5/46
Filed: 1965-02-19
Abstract: 1,091,875. Incinerators; heating systems. VON ROLL A.G. Feb. 19, 1965 [Feb. 20, 1964; Dec. 3, 1964], No. 7377/65. Headings F4B and F4U. A steam generator 1, fired with refuse 3, operates in a closed cycle 30, the steam generated in tube banks 10<SP>1</SP>, 10<SP>11</SP>, 10<SP>111</SP> in flue passes 6, 6<SP>1</SP>, 6<SP>11</SP> passing from the collecting drum 16 around conduit 31 through external heat exchanger 17 to the air or water-cooled condenser 11, the working medium then flowing through regulating valve 19 and mechanical circulating pump 23 back to the generator 1 through inlet conduit 15. The flow round the cycle 31 is controlled by controller 25 acting on the valve 19 or the pump 23 to maintain the flue gas temperature at outlet 7, measured by senser 24, constant. The secondary portion 17a of heat exchanger 17 is connected by conduit 17<SP>1</SP> regulating valve 20 and circulating pump 33 to heat consumer 18 the cooled water returning via line 17<SP>11</SP>. Controller 32 acts to adjust valve 20 or pump 33 to maintain the flue gas outlet temperture constant or to meet the requirements of heat consumer 18.
Patent GB-565887-A (GB)
Title: A new or improved process for the heat treatment of iron or iron alloy castings
IPC: C21D5/10
Filed: 1941-06-11
Abstract: 565,887. Heat treating metals. BIRMINGHAM ELECTRIC FURNACES, Ltd., ROBIETTE, A. G. E., and HANCOCK, P. F. June 11, 1941, No. 7380. [Classes 72 and 82 (i)] In the heat treatment of iron or other alloy castings, the latter are first decarbonized by heating in a non-oxidizing atmosphere produced by the controlled combustion of predetermined mixtures of air with charcoal gas, producer gas or coal or town gas, e.g. as described in Specification 564,252, to remove carbon from the surface zone and a carbon content gradient from the surface to the core, the castings being then subjected to a recarburizing treatment to produce a substantially uniform predetermined average carbon content throughout the castings. The carbonizing may be effected at a temperature of 1000‹ C. in an atmosphere of natural gas, propane or butane mixed or diluted if desired, with a neutral or inert gas or in the presence of a solid or liquid medium. After the carburizing, the castings may be heat treated, preferably in a neutral atmosphere, so that differences between the carbon contents at the core and the surface are eliminated, and then quenched. Specification 564,345 also is referred to in the Provisional Specification.
Patent GB-187543-A (GB)
Title: Improvements in cards for playing games
IPC: A63F1/02
Filed: 1922-03-16
Abstract: 187,543. Day, M. J., and Creasey, A. March 16, 1922. Card games.-A pack of playing cards comprises cards marked " put one," " take one," " put two," " take two," " put three," " take three," " all put one," " all put two," "blank," and " take all." Reference has been directed by the Comptroller to Specification 193,242.
Patent GB-540980-A (GB)
Title: Improvements in or relating to liquid pressure remote control systems
IPC: G08B9/14
Filed: 1940-04-29
Abstract: 540,980. Hydraulic actuation of ships, telegraphs etc.; locking rods. AUTOMOTIVE PRODUCTS CO., Ltd., CHADBURN'S (SHIP) TELEGRAPH CO., Ltd., EVES, F. S., and BAMFORD, A. C. April 29, 1940, Nos. 7644 and 9490. [Class 69 (ii)] [Also in Group XXIV] Liquid is forced by one of two pistons 43, Fig. 2, through a pipe line to a corresponding motor cylinder 91, Fig. 7, the piston of which forces a sliding yoke member 95 down, actuating a ratchet, and so rotating its shaft 24. The pump pistons are selectively actuated, on turning a spindle 30 in one or other sense, through ratchet-actuated cams 52 and levers, and their return strokes are effected by the liquid column returned by the spring 97 of the motor yoke 95 acting on its piston. Completion of the return stroke of the pump piston causes release of a catch 71, Fig. 3, engaging a latch lever 55 which has locked the cam 52 on its return to neutral position after a complete turn of the spindle. The levers 55 acting on the two cams are normally held locked in neutral position by spring- pressed balls, Fig. 2, separated by means allowing only one to be released at a time. When alternatively operable transmissions are provided, operation of one is caused to close the connecting valves of the others and to lock their handles, by auxiliary hydraulic columns operated from the spindles 30. A ship's telegraph so operated.may comprise a pair of independently operated transmitters in one casing, one giving " stop," " full " &c. orders ahead and astern and the other the number of revolutions, and these orders may be indicated on the transmitter.
Patent GB-232570-A (GB)
Title: Improvements in or relating to the driving of self-acting mules
IPC: D01H3/00
Filed: 1925-03-21
Abstract: 232,570. Siemens - Schuckertwerke Ges. April 17, 1924, [Convention date]. Mules.-In a mule in which the backing-off motion and 'the inward run are operated through an auxiliarv shaft 21 and the outward run through the usual belt driven shaft 11, the driving-belt 33 is controlled by a tension pulley 36, which is applied at the commencement of the outward run and raised at the completion of the delivery of the yarn. Specification 208,544 is referred to.
Patent GB-1103161-A (GB)
Title: Electrophotographic apparatus
IPC: G03G15/26
Filed: 1965-02-23
Abstract: 1,103,161. Electro-photographic apparatus. HARRIS-INTERTYPE CORPORATION. Feb. 23, 1965 [Feb. 24, 1964], No.7840/65. Heading G2H. An apparatus for reproducing an original on an electro-photographic sheet has a belt conveyer for feeding a sheet from an electrostatic charging station and means for producing a pressure differential for holding the sheet flat against the belt conveyer during exposure. A document 24 to be reproduced is placed on a glass plate 25. Electro-photographic sheets are removed from trays 15, 16 and placed sensitive side up on table 35 for feeding through charging station 45 having charging units 47 and 49 which apply an opposite charge to both sides of the sheet. The charged sheet is exposed while held stationary and flat in an exposure station 55. Endless perforate belts 155, 156 Fig. 6 (not shown) of open mesh material, e. g., fibreglass pass around a vacuum chamber 160 Fig. 5 (not shown) having perforations 166. The document 24, Fig. 2 is illuminated by quartz lamps 61, rays reflected by the document being focused by a lens system 62 having a time controlled shutter 340 Fig.16 (not shown). The latent image produced by exposure is developed by passage through a tank 81 containing toner dispersed in a liquid carrier. The concentration of toner is maintained under the control of a photocell or by a visual control indicator 288 Fig. 11 (not shown). The developed image is fixed after passage through squeegee rollers 230, Fig. 2, by a fixing unit having a heater and fan. Feelers in the path of the electro-photographic sheet actuate switches 145, 150 Fig. 4 (not shown) and 175 Fig. 5 (not shown) to control the feed of the sheet, the operation of the apparatus and prevent the entry of a second sheet while the first sheet is in the exposure position.