baber/WOPTO huggingface dataset:
Patent GB-473801-A (GB)
Title: Internal combustion engine
IPC: F02B19/06
Filed: 1936-10-06
Abstract: 473,801. Four-stroke engines; regulating. MALLORY, M. Oct. 6, 1936, No. 27150. Convention date, Dec. 28, 1935. [Classes 7 (ii), 7 (iii), and 7 (vi)] Two cylinders 9, 10 are supplied by separate means with a high grade, rich, or heated mixture and a low grade, lean, or cold mixture respectively, means such as a sparking plug 35 is provided for igniting the mixture in the cylinder 9, a port 19 connects the upper ends of the two cylinders whereby the flame may pass into the cylinder 10 so as to ignite the mixture therein, and a valve such as a sleeve valve 20 controlling the port 19 is open at all times except during the suction stroke. The cylinders are supplied by carburetters 27, 28 with which valves 29, 30 linked together by a rod 31 are associated. An inlet valve 24 controls the admission of fuel to the cylinder 10, and the valve 20 controls admission to the cylinder 9. The valve 29 is open slightly for idling when the valve 30 is completely closed. A piston 8 in the cylinder 10 is connected by a rod 11 to a crank-pin 13, and a piston 7 in the cylinder 9 is connected by a rod 15 to the big end of the rod 11 and has a slight lead over the piston 8 corresponding to the time of flame propagation to the cylinder 10. A plug 36 may be replaced by an oil-injector, in which case air is admitted to the cylinder 10 by the valve 24 ; alternatively, the oil may be injected into the airstream.
Patent GB-244721-A (GB)
Title: Improvements in carburettors
IPC: F02M3/14
Filed: 1925-10-29
Abstract: 244,721. Soc. Anon. Solex. Dec. 17, 1924, [Convention date]. Spray carburettors. - In a carburettor comprising a main nozzle, at least one slow speed nozzle which delivers into a conduit e, and a throttle valve f with an enlarged peripheral portion f<1> adapted to cover the outlet, of the conduit e in the closed position of the valve and moving to open in the direction of the air flow, one or more passages f<0>, f<00>, f<000> are provided in the enlarged portion and open at one end on the suction side of the valve and at the other end at the peripheral portion. The outlet of the conduit e may be substantially in the plane of the throttle axis, Fig. 1, or on the suction or engine side thereof, Fig. 2. In a third arrangement, the forward edge of the enlarged portion or the outlet of the conduit e or both of them may be substantially in the plane through the throttle axis. With the above constructions, suction on the slow speed nozzle is maintained for a longer period, its delivery at the end of the slow speed period is increased and that towards the end of the full speed period, reduced.
Patent GB-1439221-A (GB)
Title: Ink jet system printer
IPC: B41J2/13
Filed: 1973-06-07
Abstract: 1439221 Printers SHARP KK 7 June 1973 27198/73 Heading G4H In an ink jet printer of the charge-amplitudecontrolling type, the rate of provision of ink drops having electric charges thereon is variable, as is the relative velocity of ink drop producing means and recording medium. As disclosed, the former is done by varying the proportion of the drops which are charged. Characters to be printed are received from a high velocity source, e.g. tape recorder (requiring continuous printing) or a low velocity source, e.g. keyboard (requiring intermittent printing i.e. print one character and stop), buffered and then fed to a read-only-store which controls a charging electrode via a video generator. An ink nozzle (excited by an ultrasonic transducer) and the electrode are mounted in a head which moves horizontally (or the paper may move), ink drops from the nozzle, after passing through the charging electrode, being deflected vertically electrostatically on to the paper. The ultrasonic transducer is driven by an oscillator, the pulses from which are also frequency-divided to drive a counter controlling the buffer, read-only-store and video generator to determine the fraction of the ink drops which are charged. The frequency-division ratio is set at one of two values depending on whether continuous or intermittent printing is required (lower fraction of drops charged for intermittent printing). The print head velocity is controlled by selecting one of two drive-pulse generators according to whether continuous or intermittent printing is required (lower speed for intermittent).
Patent GB-167410-A (GB)
Title: Machine stands
IPC: D05B75/02
Filed: 1920-09-25
Abstract: 167,410. Fairwearther, W., (Singer Manufacturing Co.). Sept. 25, 1920. Machinery beds and frames.-The stand for a small treadle-driven machine is made up of pressed metal parts of channel section united to form members of rectangular cross section. The uprights 1, Fig. 1, are formed of two channelsections 2, 3, Fig. 6, secured together by the bending of the edges of the section 2 at 8. Stiffening cores 4, which may be of hard wood, are used. The foot members 10 are made up as shown in Fig. 4 and have filling blocks 4 where bolts 33, Fig. 1, are used to secure the cross pieces 26 which is made of an open channel section. The back is braced as shown in Fig. 1 and the crank shaft 41 is supported in two members 35<1>, 37 to the latter of which a circular dress guard 38 is secured. The uprights are secured in sockets provided by the foot members, by means of half rivets which are electrically welded together in position.
Patent GB-171678-A (GB)
Title: Relay circuit arrangements for use more particularly in telephone or like systems
IPC: H04Q3/00
Filed: 1921-10-15
Abstract: 171,678. Automatic Telephone Manufacturing Co., Ltd., (Assignees of Erickson, J.). Nov. 17, 1920, [Convention date]. Addition to 123,053. Automatic exchange systems.-Relates to relay arrangements for use in systems of the kind described in the parent Specification, in which a trunk between two exchanges is accessible over several different levels of the outgoing group selectors and is provided at its incoming end with means for extending it in a direction corresponding to the level over which it was seized. In the system illustrated it is assumed that the trunk 95, 96 can be seized over any of four levels, as shown at the left of Fig. 1. The relay set F at the incoming end of the trunk comprises a pair of relays 107, 108 normally energized in series and connected at an intermediate point to the trunk wire 96. By momentarily connecting this wire. to ground or battery at the first exchange, one or other of these relays is short-circuited and causes the energization of relay 103 or 104 to extend the trunk in the direction 177, 179 or 180, 182. A pair of relays 105, 196 may be similarly controlled over the trunk wire', 95 to energize relay 101 or 102 to extend the trunk in the direction 171, 173 or 174, 176. The connection of ground or battery to the trunk wire 95 or 96 is controlled by relays 61 - - 64, one of which is energized over the test terminal 3, 6, 9, or 12 according to the level over which the trunk was seized. The relay 61 &c. also connects ground 72 to the test terminals in all the levels. The energization of relay 61 &c. is followed a moment later by the energization of relays 34, 35, which disconnect the trunk wires from the contacts of relays 61 - - 64 and bridge the trunk through the upper windings of a reday 31 and impedance coil 33, energizing the line and release relays of the selector seized by the relay set F. The relav, such as 104, which was first energized by relay 108 and was sustained for a short time by relay 112 is now locked over the wire 181 of the seized selector. The remaining impulses sent by the subscriber are repeated over the trunk 95, 96 by contact 79 of relay 30, relay 32 being energized as long as impulses are passing to provide a circuit free from unnecessary impedance. When the connection is completed and the called subscriber answers, the reversal of current in the trunk 95, 96 energizes the electropolar zed relay 31, which energizes the reversing relay 25, which cuts both windings of the impedance 33 into the bridge circuit to improve the talking efficiency. One of the connections controlled by the relay set F may be to an operator. To avoid trouble due to differences between the ground and battery potentials at the two exchanges the wires 200, 201 which feed the relays 105 - - 108 may be connected to ground and battery at the first exchange.
Patent GB-225536-A (GB)
Title: Letter opener
IPC: B65D27/32
Filed: 1924-11-17
Abstract: 225,536. Brandner, W. Nov. 30, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Envelopes. - An envelope opener c for enclosure in the envelope consists of a piece of stiff material printed with advertisements and provided with a tapered end, which projects through an incision b in the edge of the envelope. The opener c may be triangular with inwardlycurved sides, or may be bottle-shaped.
Patent GB-833990-A (GB)
Title: Improvements relating to dipmeters for measuring the dip of geological strata
Inventor: MANN FREDERICK HENRY
IPC: E21B47/026
Filed: 1955-09-27
Abstract: 833,990. Geophysical surveying. BRITISH PETROLEUM CO. Ltd. Aug. 22, 1956 [Sept. 27, 1955], No. 27472/55. Class 37. A borehole probe for determining the angle and direction of dip of geological strata comprises an elongated, e.g. cylindrical or hour-glass shape, comprises guard electrode 10 in the sides of which are at least three insulated " beamed current electrodes " 11, and an appropriate number of amplifiers in a pressure-tight vessel. The apparatus is maintained centrally in the borehole by insulated supports 15 and bowsprings 16. The electrodes 10 and 11 are maintained at the same potential and current flows through the beamed electrodes and surrounding drilling fluid into the walls of the borehole as indicated in Fig. 2. Circuit arrangements, Fig. 4.-The unearthed terminal of an A.C. supply is connected directly to the guard electrode and via transformers such as 21 to each beamed current electrode. The output of each of these transformers is amplified and rectified in the borehole and supplied to meters such as 25 by lines 17 and 18. Changes in this output as the probe is raised and lowered are indicative of changes in strata.
Patent GB-702330-A (GB)
Title: Improvements in or relating to a process for drying and/or setting rabbit and other fur-bearing skins and to apparatus for performing the said process
IPC: C14B1/26
Filed: 1950-11-10
Abstract: 702,330. Drying-apparatus. HOWARTH, S. W. Oct. 15, 1951 [Nov. 10, 1950], No. 27480/50. Class 34(2) [Also in Group VIII] In a process for drying rabbit or other fur-bearing skins, the skins are held in a flat state by pressing them against a stationary or moving surface by means of air pressure. The surface may be provided with air passages, and the skins held by a vacuum applied to one side of the surface or by air pressure applied on the other side. As shown, the skins with the fur side uppermost are carried on the top run of an endless perforated conveyer belt 1 and are held in position by means of vacuum applied to a box 5; the drying chamber 3 includes gas-heated panels 4 and ducts 8 for introducing air; hot air or steam pipes may also be used for drying.
Patent GB-1524881-A (GB)
Title: Printing ink
IPC: C09D11/10
Filed: 1976-07-01
Abstract: 1524881 Printing ink composition A B DICK CO 1 July 1976 [7 July 1975] 27484/76 Heading C3R An ink composition comprises 1-30% wt. of a linear Novolac resin which is an acid catalysed condensation product of phenol and an aldehyde, preferably formaldehyde or paraformaldehyde, and which generally has an average molecular weight of from 200-2500; from 0À4-5% wt. of a dyestuff, which is soluble in an alcohol or a mixture of an alcohol and water; 0-20% wt. of an evaporation retardant, generally selected from glycol ethers and glycol esters; 0-1À5% wt. of an alkali metal thiocyanate or other ionizable salt which reduces the electrical resistivity of the composition; the remainder being substantially water and an alcohol, e.g. a C1-C5 alcohol, the water being present in an amount of up to 80% wt. of the alcohol. The dyestuff may be acidic or basic. Suitable evaporation retardants are ethylene glycol monoethyl ether, diethylene glycol monoethyl ether, ethylene glycol monoethyl ether acetate and diethylene glycol monomethyl ether acetate. The ink composition may possess the following properties: viscosity: 1-8 c.p.s. at 20‹ C.; electrical resistivity: less than 3000 ohm-cm, surface tension: 22À5-60 dynes/ cm; sonic viscosity: 1200-1800 m./sec.; and specific gravity: 0À8 -1À045. Uses.-Jet printing on to glass or other glazed ceramic surfaces.
Patent GB-989247-A (GB)
Title: Process for the preparation of baker's yeast, and for the manufacture of bread with the aid of such yeast, as well as the bread and bakery products thus obtained
IPC: A21D8/04
Filed: 1962-07-18
Abstract: Baker's yeast giving high gas formation in dough, having good keeping qualities and dispersibility and being produced in high yield, is obtained by growing in a conventional culture medium hybrids of Saccharomyces cerevisiae which, in the absence of maltose, produce such quantities of the enzymes required for the maltose fermentation that, in the standard Warburg test, more than 600m 1. of CO2 gas are produced.  In this test, 0.5 ml. of a medium containing maltose as the only sugar is treated in a Warburg vessel with 1.5 ml. of a yeast suspension containing 4.5 mg. yeast and the gas formation measured between 0 and 100 minutes at 28 DEG C. and 140 oscillations/ minute. Two hybrid yeasts, which satisfy the above requirements, are described and have been deposited with the C.B.S. Delft branch under the numbers Saccharomyces cerevisiae Ng 740 and Ng 1777.  The conventional culture medium for the preparation of the yeast is molasses or sulphite liquor.  Specifications 868,621 and 868,633 are referred to.
Patent GB-234714-A (GB)
Title: Improvements in or relating to covering compositions for tennis courts, floors and the like
IPC: E01C13/06
Filed: 1924-11-18
Abstract: 234,714. Calderwood, W., and Webb, A. E. Nov. 18, 1924. Continuous paving.-Tennis courts, floors, and like surfaces are covered with a composition consisting of ground shells of shell-fish, a fossil gum such as copal, and a mineral oil, with or without a vegetable oil. Suitable proportions of binder are 7 parts of fossil gum to 5 parts of mineral oil, or 7 parts of fossil gum, 4 parts of vegetable oil, and 6 parts of mineral oil; 2 parts of this binder are mixed with about 10 parts of ground shells.
Patent GB-603406-A (GB)
Title: Improved means for hingedly attaching the closure flaps of letter-box plates, and for hingedly attaching other like parts to their supports
IPC: A47G29/126
Filed: 1945-10-20
Abstract: 603,406. Letter-boxes. WHEELER, F. W. L. Oct. 20, 1945, No. 27614. [Class 18] [Also in Group XXV] A hinged letter-box flap 2 is attached to an aperture support 1 by two pairs of apertured lugs connected by a pin 4, the lugs 6 of the one pair being carried by a bar 7 secured to the support above the aperture, and the lugs 3 of the other pair being carried by a plate 5 secured to the flap, the lugs 3 being offset to project above the top edge of the flap and to lie between the lugs 6. A torsion spring 8 maintains the flap in the closed position.
Patent GB-176412-A (GB)
Title: Process of electrically etching printing, reproduction or relief plates for various purposes
IPC: B41C1/02
Filed: 1920-09-29
Abstract: 176,412. Jackson, W. J. Mellersh-, (Weeks Photo-Engraving Co., Inc.). Sept. 29, 1920. Etching.-In producing an etched printing plate by sensitizing the plate, forming an image thereon photographically, heating the plate to bake or enamel the image, and etching by electrolysis, the electrolyte consists of a solution of sodium chloride to which a chloride of iron is added. The preferred electrolyte is an aqueous solution of sodium chloride having a density of 5‹ BÚ to saturation, 5 to 10 per cent of its volume of perchloride of iron of about 40‹ BÚ, or of chloride of iron of the same strength, or the equivalent in dry chloride of iron with the addition of nitric, hydrochloric, chromic, citric or acetic acid. The plate may be immersed in a hardening solution after the usual developing. If some parts are to be etched more than others, the etching may be interrupted and the latter stopped with a solution of shellac in alcohol. In etching deeply, undercutting may be prevented in known manner by protecting the edges of the lines with waxy or resinous powders. The plate 9, insulated on the back, is suspended face down by means of conductors 7 in a tank 1 carrying carbon cathodes 3 connected by conductors 6 to an encircling bus-bar 5. The plate forms the anode, the conductors 7 being connected to a looped positive bus-bar 11 and the bar 5 to the negative 12. the arrangement being adapted for supplying a series of tanks.
Patent GB-737633-A (GB)
Title: Pressure gauge
IPC: G01F23/16
Filed: 1953-10-08
Abstract: 737,633. Pressure gauges. McCRINK, J. J. Oct. 8, 1953, No. 27740/53. Class 106 (2). A pressure gauge has an expansible bulb 102 connected to the pressure source. A resilient finger 104 bears against the bulb and is moved by the bulb on increase of pressure to turn a pointer axle 34 through a rack and pinion. The opposite side of the bulb 102 may bear against the gauge casing 92, or against an adjustable stop 62, Fig. 2. In Fig. 2, the resilient finger 68 is adjustable towards or from the axis 44 of the rack 42.
Patent GB-1471224-A (GB)
Title: Process and apparatus for physically and biologically purifying sewage
IPC: C02F3/04
Filed: 1974-06-21
Abstract: 1471224 Cleaning trickle filters A SCHREIBER 21 June 1974 [25 June 1973] 27766/74 Addition to 1391691 Heading C1C Accumulated sludge is removed from trickle filters having a forced air flow and abrasion resistant filler material by filling the filter with water and blowing in air, separating the sludge from the rinsing water and filler material and then draining off the rinse water, the agitation of the contents during sludge removal being accomplished in a zone moving horizontally through the filter. In apparatus described a rinsing arm centrally pivoted moves over the cylindrical bed of the filter and pipes hanging from the arm are used to introduce rinse water, stir the filler and are fitted at the top with sludge-removing arrangements.
Patent GB-398651-A (GB)
Title: Improvements in the manufacture of light concrete and similar materials
IPC: B28C5/38
Filed: 1932-10-06
Abstract: 398,651. Mixing-machines. MARECHAL, F. E., 227, Rue de Bruxelles, Grand-Bigard, Brussels. Oct. 6, 1932, No. 27784. [Class 86.] A mixing-machine for use in the manufacture of porous concretes and mortars comprises an outer container 1 in which are disposed two vertical rotating shafts 5 carrying beating vanes 3 and gear wheels 6 through which drive is transmitted from a shaft 7 and bevel wheels 8, 9. An outlet 2 is preferably situated at the bottom of the container. The beating vanes 3 consist of a plurality of substantially parallel bars spaced apart. The machine is stated to exert a combined gyratory and translatory motion upon the materials being mixed.
Patent GB-1377666-A (GB)
Title: Chair
IPC: A61G15/10
Filed: 1972-06-14
Abstract: 1377666 Chairs; securing cushions SIEMENS AG 14 June 1972 [15 June 1971] 27889/72 Headings A4J and A4M The back 2 and headrest 3 of a dental chair each have a moulded rear panel 30, 31 and an upholstered front panel 9, 10 detachably secured to the rear panel by the inter-engagement of clips 11, 12 on the panel with retaining elements 13, 14 on the rear panel, mechanisms for adjusting the rake of the backrest and the position of the headrest being housed between the front and rear panels.
Patent GB-1118718-A (GB)
Title: Process for preparing derivatives of t-butyl ª‡-(3-indolyl)-acetate
IPC: C07D209/28
Filed: 1966-06-22
Abstract: Compounds of the formula <FORM:1118718/C2/1> wherein R1 is hydrogen or C1- 5 alkyl and R2 is a C1- 5 alkoxy radical, are obtained by reacting at least two moles of hydrogen chloride with a phenylhydrazine sulphonate of formula <FORM:1118718/C2/2> wherein M is alkali metal, in t-butanol at 20-55 DEG  C. for 10-50 hours and reacting the phenylhydrazine hydrochloride formed of the formula <FORM:1118718/C2/3> without isolating it with a t-butyl levulinate of formula CH3COCH2CHR1-COOC(CH3)3 at temperature of from 70 DEG  C. to reflux for 4-7 hours, the process being effected in the presence of 0-20 moles of water per mole of sulphonate. The reaction is preferably effected under an inert atmosphere and the reaction between the phenylhydrazine hydrochloride and the t-butyl levulinate is preferably carried out at a pH of 3-4, which may be adjusted by the addition of concentrated base, e.g. ammonium hydroxide. The hydrogen chloride may be employed in the form of hydrochloric acid or hydrogen chloride may be bubbled through the mixture.  The products may be converted to 1-aroyl or 1-heteroaroyl derivatives, e.g. t-butyl-2-methyl-5-methoxy-3-indolyl acetate is treated with sodium hydride and p-chlorobenzoyl chloride followed by pyrolysis to give a -(1-p-chlorobenzoyl)-2-methyl -5-methoxy-3-indolyl acetic acid; the corresponding 5-ethoxy derivative may be obtained in a similar manner.
Patent GB-1526715-A (GB)
Title: Automatic tool change apparatus
IPC: B23Q3/155
Filed: 1977-07-05
Abstract: 1526715 Automatic control of tool changing TOYODA KOKI KK 5 July 1977 [28 July 1976] 28062/77 Heading G3N An automatic tool changer for a machine tool is controlled e.g. by a microcomputer 30. When a NC control device requests a tool, the tool number is written into memory area 31 c, the number of a tool holder in a rotatable magazine 10 holding the required tool is searched in memory area 31a and written into area 31d. The magazine is then rotated until the required tool reaches tool change position 15 and arm 13 exchanges the present tool and the required tool. The memory is then amended accordingly. The changer can discriminate between large and small tools.
Patent GB-408325-A (GB)
Title: Improvements in or relating to rotary fans
IPC: F04D29/42
Filed: 1932-10-08
Abstract: 408,325. Rotary fans. WORKMAN, R. E., 41, Hamilton Drive, Glasgow. Oct. 8, 1932, No. 28072. [Class 110 (i).] A rotary fan A<1> is housed in a volute casing A, and another volute casing B with a tangential inlet B<1> conducts the entering air to the fan inlet C by a converging spiral path about an axis coincident with the impeller axis. A diaphragm D is fitted in the casing B and is movable laterally towards or from the inlet C to vary the cross-sectional area of the spiral inlet passage, and thus vary the tangential velocity component of the entering air and the fan output. A plate G hinged on a pin G<1> guides the air passing into the spiral inlet. A baffle plate E on a pivot F traverses an aperture in the diaphragm ; it is placed in its radial position E<1> to prevent the formation of a vortex when the diaphragm D is placed at its maximum distance from the inlet C, and inits position E<2> to assist in the formation of a vortex when the diaphragm is moved inwards to reduce the fan output.
Patent GB-357768-A (GB)
Title: Improvements in and relating to rotary grate gas generators
IPC: C10J3/34
Filed: 1930-09-20
Abstract: 357,768. Crates ; ashpans. ORB, M., 8, Spichernstrasse, Berlin. Sept. 20, 1930, No. 28178. [Class 51 (i).] In a gas generator having a rotary combined grate 3, Fig. 1, and stepped ashpan 4 containing water, inclined vanes 10, on the grate 3 urge the ashes downwardly towards internal stationary vanes 8 and external vanes 9 on the sealing ring 7 by which they are raised on to the step 5 of the ashpan and directed by a guide 11 to a scoop 6 for discharging the ash from the pan. The vanes 8, 9 have helically curved surfaces and like the vanes 10 are adjustable. As shown in Fig. 3, the apertures 12 in the grate are cleared by stationary arms 13 on a shaft 14.