baber/WOPTO huggingface dataset:
Patent GB-253100-A (GB)
Title: An improved method of and means for starting internal combustion engines
IPC: F01L13/00
Filed: 1926-05-25
Abstract: 253,100. Standard Motor Construction Co., (Assignees of Smith, B. C.). June 3. 1925, [Convention date]. Starting.-A four-stroke Diesel or like engine has mechanically actuated valves for atmospheric air, liquid fuel, compressed air for starting, and exhaust, the valves being actuated by cams on a shaft movable axially for starting and normal running in the forward or reverse directions. When the cam shaft is moved from a neutral position to the first starting position,' the compressed-air valve opens on each outstroke of the piston, and the exhaust valve on each instroke; in the second starting position,' the compressedair valve opens on each alternate outstroke, the atmospheric-air valve on each intermediate outstroke, and the exhaust valve on each instroke; in the running position,' the atmospheric-air valve opens on one outstroke, the fuel valve at about the end of the next instroke, and the exhaust valve on the following instroke. Corresponding positions on the other side of neutral give reverse starting and running. The compressedair valve 5 on each cylinder is connected to the cylinder by a passage 12 provided with a check valve, and is carried by a piston 14 connected by a rod 15 to a rocker actuated by the cam. A second piston 16 on the valve-stem causes the valve to be normally closed when the compressed air is turned on; on turning off the air, the valve drops by gravity into the open position, in which it is not actuated by the cam. In the running position ' of the cam shaft. before the compressedair supply is turned off, the valve 5 is actuated and compressed air is admitted whenever the pressure in the engine cylinder falls below that of the compressed air. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the application of the invention to any four-stroke engine, and states that the ' second starting position ' may be omitted. This subject-matter does not appear in the Specification as accepted.
Patent GB-221845-A (GB)
Title: Improvements in or relating to apparatus for testing long bodies of material that can be magnetised
IPC: G01N27/90
Filed: 1923-05-17
Abstract: 221,845. Ambronn, R. May 17, 1923. Magnetic tests and measurements.-In order to test for changes in the cross-section or quality of long bodies of magnetic material, such as rolled iron, wire, wire cables, steel rods, &c., the cable &c. to be tested is passed through a magnetic field produced by alternating current or interupted direct current and the distortion of the field due to irregularities of the cable measured in a circuit responsive to variations in induced current voltage and phase displacement. Within a casing 1 are mounted a coil 2, supplied with alternating current of about 500 periods, and secondary coils 3, 4 connected as shown to condensers 14, 15, one or both of which are variable, and a telephone or other alternating-current indicator 17. A rod of known uniformity is employed in order to obtain balance of the indicator 17 by means of the variable condensers 14, 15. This is then replaced by the rod 12 to be tested, which disturbs the balance, if irregularities are present. Instead of employing the coils 3, 4, the displacement in phase between the current and pressure in the coil 2 may be observed, for example by an oscillograph or a Braun tube. The coils 2, 3, 4 may each be replaced bv two coils arranged one in each half of the divided casing 1 and partially enclosing the rod. Rollers 13 may engage the rod 12 and drive the paper band of a recording- instrument. Instead of comparing adjoining cable or rod sections by the coils 3, 4, the rod under test may pass through one only of these. the other being arranged at the side so as to surround a standard rod, which is magnetised bv standard rod may be built up of two or more conicad rods of different, but known magnetic hardness, and adjustable relatively to each other and relatively to the field and the secondary coil. The outer ends may be connected by an iron yoke. Changes in the hysteresis or other magnetic properties of the rod under test may thus be measured.
Patent GB-143252-A (GB)
Title: Improvements in automatic pistols
IPC: F41A3/64
Filed: 1920-05-13
Abstract: 143,252. Decker, W. April 23, 1915, [Convention date]. Breech actions, sliding breech-block.-Relates to automatic pistols of the kind in which the breech-block is fixed to a slide mounted on and enclosing the barrel, and consists in a method of mounting the breech-block in the slide to facilitate the assembling of the parts of the breech action. The breech-block, shown separately in Fig. 4, has a rearward extension 11 adapted to fit the bore at the rear of the slide 6, and is inserted through a recess in the top of slide and pushed rearwardly until a catch 14 formed by the rear end of the extractor 12 snaps into a notch in the slide. The sear 21 is formed with an upward projection 19 adapted to form the rear abutment of the firing spring 17. The trigger 8 is formed with a forwardly projecting hook 9 adapted to retain the slide 6 in the rear position, shown in Fig. 3, to facilitate assembling, and for hand loading. A lever 24, Fig. 5, depresses the sear-actuating bar 23 when the breech is open to ensure single shots. The firing-pin 16 acts on an ejector at the end of the opening movement. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a safety device consisting of an extension 27 of the magazine catch 26, adapted to lock the sear when the magazine is removed. This subject-matter does not appear in the Specification as accepted.
Patent GB-1345444-A (GB)
Title: Optical line followers
IPC: G06K11/04
Filed: 1971-05-05
Abstract: 1345444 Line followers GERBER SCIENTIFIC INSTRUMENT CO 5 May 1971 [16 Sept 1970] 13308/71 Heading G4H In a line digitizer in which a line 22 (Fig. 3) on a surface 21 is scanned by a sensor 24 performing a series of circular scans (40, Fig. 2, not shown), the point of intersection (42) of the scan path and the line is digitized and combined with a digital signal representing the centre (44) of the scan path to give an output signal representing the location of the point of intersection relative to the surface. As described, line following control 54 delivers two analogue signals (E x , E y , Fig. 2, not shown), together representing the vector (46) joining the centre (44) of the scan path to the point of intersection (42), to the x and y drive systems 56, 58 (Fig. 3) driving the sensor 24 so that the sensor is moved towards the intersection point. The drive systems 56, 58 are connected to encoders 36, 34 so that digital signals representing the centre of the scan path are derived. The two analogue signals E x , E y  are fed to sealers 60, 62 feeding signals kE x  and kE y  (where k is constant depending on the radius of the scan path) to analogue/digital converters 64, 66. The outputs from the encoders and converters are added to feed to a recorder digital signals representing the x and y co-ordinates of the point of intersection of the line and scan path relative to the surface. The line follower may be as in Specification 1,192,987.
Patent GB-587242-A (GB)
Title: Improvements in or relating to apparatus for operating a ship's variable pitch propeller
IPC: B63H3/06
Filed: 1944-07-12
Abstract: 587,242. Variable - pitch propellers. SULZER FRERES SOC. ANON. July 12, 1944, No. 13311. Convention date, Aug. 28, 1943. [Class 114] 'A ship's variable-pitch propeller is operated by a vane-type hydraulic motor 45 mounted outside the shaft, but rotating with it. This motor rotates a gear 11, the centre of which acts as a nut on the threaded shaft 18. Fluid supply to the motor is controlled by the hydraulically operated valve 64; movement of the shaft 18 reclosing the valve by the link 71. Electric or fluid gear motors are also described.
Patent GB-238963-A (GB)
Title: Improvements in or relating to electric fuse boxes
IPC: H01H85/20
Filed: 1924-05-30
Abstract: 238,963. Reyrolle & Co., Ltd., A., and Clothier, H. W. May 30, 1924. Fuse boxes with hinged covers are provided with a plug and socket switch, one member of which is attached to the base and the other to the cover so that the opening of the cover cuts off current to the fuses. The distribution box A provided with fuses B, B<1> has a hinged cover A<1> bearing a plug member E<1> connected to the fuses by a flexible lead G. When the lid is closed the member E<1> co-operates with a fixed socket E connected to the incoming mains so that the fuses are alive only when the cover is closed. While in the open position current may be taken from the socket E to an inspection lamp.
Patent GB-673512-A (GB)
Title: Improvements in or relating to readjustable gauges
IPC: G01B3/38
Filed: 1950-05-26
Abstract: 673,512. Linear dimension gauges. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. May 26, 1950 [May 31,1949], No. 13330/50. Class 106 (ii). A fixed-calliper type gauge which is readjustable on wear comprises a frame 1 of U or figure 8 shape containing two jaws 4 and 8 with an intermediate wedgeshaped piece 14. The jaw 4 and wedge 14 are held in position by means of screws 5, 15 and adjustment is effected by variation of the position of the jaw 8 along the inclined surface of the wedge 14. The jaw 8 is held by a clamp 16 and screws 18 and 19, adjustment being made by movement of the screw 12. A vernier scale may be provided by suitable engraving on the adjacent faces of the wedge 14 and jaw 8. The slope of the inclined surface is small, for example 1 in 500, in order to provide a very fine adjustment of the gap between the faces 7, 9 and 7, 10, which represent the upper and lower limits of the gauge.
Patent GB-1028559-A (GB)
Title: Tunnelling device
Inventor: SAMOILOV VLADIMIR PAVLOVICH
IPC: E21D9/08
Filed: 1964-04-01
Abstract: 1,028,559. Tunnelling machines. NAUCHOISSLEDOVATELSKY INSTITUTE OSNOVANY I PODZEMNYKH SOOROOZHENY. April 1, 1964. No. 13357/64. Heading E1F. In a tunnelling machine at least two annular shells are so supported by a structure, preferably a tunnelling shield, advanceable in the direction of the tunnel to be excavated that the shells may have a limited rotation with respect to the support and each other so that the series of parallely disposed knife members extending chordwise across the whole or part of each shell can be adjusted to form various grid patterns for slicing the earth to be excavated as the machine is advanced. Preferably rotation of at least the rearmost shell is by a motor driving a ring gear associated with the shell. A telescopic, digging tool-carrying arm is mounted inside the shield together with a rotatable loader drum for collecting severed earth falling from the knife members and transforming the earth to rearwardly extending conveyer means.
Patent GB-164949-A (GB)
Title: An improvement in plants for gasifying fuel
IPC: C10J3/00
Filed: 1920-05-14
Abstract: 164,949. Woodall, Duckham, &. Jones (1920), Ltd., and Duckham, Sir A. M. May 14, 1920. Generators.-In a plant for the total gasification of fuel in which the fuel is distilled in a retort and passed to a water-gas generator, the relationship between the pressure at the top of the retort b and at the top of the generator g is kept substantially constant by hydraulically sealing the outlet pipe a of the retort in a seal pot c divided by a partition d into two compartments. These compartments have free communication for the passage of water between them, the outlet pipe a is sealed in one compartment, from which the volatile products escape through an opening e, and a pipe f leads from above the liquid in the other compartment to the top of the generator.
Patent GB-133802-A (GB)
IPC: F04D29/14
Abstract: 133,802. Smith, W. S., and Salmon, P. Oct. 31, 1918. Leakage-preventing devices.-In a centrifugal pump for delivering petrol, leakage of the fluid into the bearing is prevented by blades 6 on the rear of the impeller disk. These blades are so proportioned that they maintain at running speeds sufficient pressure at their periphery to overcome the sum of the inlet pressure at 4, and that due to the main blades 3. Below a certain speed, a spring 9 holds a conical collar 7 on the shalt against a seating 8 and prevents leakage of the fluid. Above that speed, axial end pressure moves the shaft in opposition to the spring.
Patent GB-382567-A (GB)
Title: Improvements in or relating to rotary piston engines
IPC: F01C1/356
Filed: 1932-05-10
Abstract: 382,567. Rotary engines. SULZER F R ’ RES SOC. ANON., Winterthur, Switzerland. May 10, 1932, No. 13410. Convention date, May 11, 1931. [Class 110 (ii).] In a reversible engine or pump the outwardlysliding abutment k which bears on the periphery of the eccentric, rotating, piston c, is provided with ports i, side by side, to control the admission of working fluid to the chamber f, or from the chamber g leading to an exhaust e. The reciprocating movement of the vane is imparted by the shaft b through connecting-rods h. The ports i may be displaced radially with respect to one another.
Patent GB-134964-A (GB)
IPC: B61D9/02
Abstract: 134,964. Dewhurst, J. H. Nov. 22, 1918, Tip-wagons. - In railway tip-wagons of the kind in which the body a, Fig. 6, is supported by means of curved toothed plates b at its ends adapted to roll on toothed racks c carried by the underframing d, the curved plates are in the form of circular arcs at their lower portions merging into straight or less curved portions at their sides, whereby, in its tipping movement, the body is gradually brought to rest when nearing its limiting position. At each side, the body has attached to it, through springs e<1>, chains e the lower ends of which are adapted for connexion to the underframe d by means of keys f entering slots d<1>, Fig. 4, in the underframe and provided with locking-shoulders f<1>, f<2> held in an operative position by wedges g. When the wedge g on one side is removed, the tension of the spring e<1> on the other side causes the body to tip automatically to the other side. The centre of gravity of the body is so arranged that the body automatically returns to its central position when empty. In order to limit the tipping movement, the curved plates b are provided with steps h adapted to engage against stops i carried by the end plates d<2> of the frame. In some cases, a latch k operated by a hand-lever j may be provided on the end plate d<2> to engage under the stop h so as to hold the wagon in its. tipped position for a sufficient length of time to ensure complete discharge. In a modification, the operating-springs e' are dispensed with, and the body is tipped to one side or the other by an endlong pull on chains passing round pulleys, as described in Specification 14749/00. In this case, the plates b have a flat untoothed base and curved toothed sides, and the racks are plain in the centre and toothed at their ends, and a central projection on the plate enters a central recess in the rack to ensure correct centring of the body in its normal position.
Patent GB-552770-A (GB)
Title: Improvements in or relating to the manufacture of transparent alginate films
Filed: 1941-10-21
Abstract: 552,770. Alginic films. CEFOIL, Ltd., and ROSE, R. C. Oct. 21, 1941, No. 13537 Drawings to Specification. [Class 2 (ii)] A solution of a soluble alginate is formed into a film and solidified by treatment with a salt which forms an insoluble alginate, and the film is at least partially dried and then converted into a film of alginic acid. A solution of sodium alginate may be subjected to compressed air pressure and extruded through a slot in the bottom of a hopper into a solution of calcium chloride or other alkaline-earth salt. The sodium alginate solution may be of a strength of 5 per cent. or more and may give a viscosity of 10-200 centipoises at 15‹ C. when diluted to a strength of 1 per cent. The coagulated film may be passed from the first coagulating bath into a second bath containing calcium chloride solution. It is then passed through nip rollers and through a washing bath continuously supplied with fresh water. It is passed through nip rollers and then round heated drying cylinders by which alternate sides of the film are exposed to the hot surfaces and. to the atmosphere. Drying may be carried out until the solid content of the film is 30 per cent. or more of the total weight. The partially dried film is passed into an acid conversion bath which may contain hydrochloric acid of 2 per cent. strength. The alginic acid film passes through a washing bath and then through a bath containing a solution of glycerol. It is dried and then passed over conditioning rollers located in a chamber containing air at a relative humidity of 65 per cent. The treatment results in an alginic acid film which is strong enough in wet condition to permit of rapid speed of production and which in finished condition is of improved toughness. Specifications 492,264 and 530,889 are referred to.
Patent GB-495403-A (GB)
Title: Improvements in or relating to the colouration of textile materials
IPC: D06P5/15
Filed: 1937-05-13
Abstract: Printing; cellulose esters or ethers, dyeing.-In the production of coloured pattern effects on textile material made of or containing a cellulose ester or ether, a discharge preparation containing a zinc aldehyde or ketonesulphoxylate and an esterified leuco compound of a vat dyestuff is applied to the material before or after the application of a dischargeable ground colour.  Specified discharging agents are zinc formaldehyde-, acetaldehyde-, benzaldehyde- and acetone-sulphoxylates and specified esterified leuco vat dyestuffs are Indigosols scarlet HB, red HR, brilliant pink I3B, pink IR ex., orange HR, golden yellow IGK, printing blues IB and IGG, blue AGG, violet AZB, purple AR and green AB.  The discharge preparations may also contain substances having a solvent or swelling action on the cellulose derivative, e.g. alcohols, phenols, thiodiglycol or diethylene glycol (cf. Specification 400,643).  In an example a cellulose acetate fabric, dyed with Celliton discharge blue 3R is printed with an aqueous preparation containing zinc formaldehydesulphoxylate, Glyecine A, gum tragon and Indigosol green AB, and the printed fabric is dried, aged, hung in the air for 24 hours, treated for 1-2 minutes with an aqueous solution at 50 DEG  C. containing sodium bichromate and sulphuric acid, washed, soaped, rinsed and dried to obtain a bright green pattern on a blue ground.
Patent GB-761168-A (GB)
Title: Footwear with foot supports
IPC: A43B7/14
Filed: 1954-05-10
Abstract: 761,168. Foot-arch supports. LEDOS, M. E. A. May 10, 1954, No. 13587/54. Class 17(2). A built-in foot arch support of elastically deformable material has a concave rear portion supporting the heel and forwardly and downwardly inclined arch supporting portions overlying the sole and parts of the upper and extending to the anterior transverse arch. The inclined edges have their maximum height 27, 33 at the rear transverse arch as shown and slope down forwardly to the anterior transverse arch. In cross-section the support is concave at 28, 31 rising to a median reinforcement at 29 which has its greatest height under the rear portion of the third cuneiform bone and extends downwards to just forward of the anterior transverse arch.
Patent GB-356696-A (GB)
Title: Improvements in blind roller stop
IPC: E06B9/82
Filed: 1930-05-02
Abstract: 356,696. Window blinds. MESLER, B. E., 24, State Street, New York, U.S.A. May 2, 1930, No. 13614. [Class 52 (v).] A spring roller is held, when the blind is completely wound up or at any predetermined point, by a sleeve slidably mounted on the one end of the roller and moved to abut against the end supporting bracket. In the construction shown the roller end carries an externally screwed cap 27 which is held from rotation by the flat end 15 of the shaft carrying the roller spring passing through a slot 28 in the end of the sleeve. An internally threaded sleeve 23 is screwed upon the cap 27 and has a longitudinal slot 22 engaging a spiked pin 19 driven into the roller. In action as the blind is wound upon the roller the sleeve 23 is rotated by the pin 19 and moves outwardly along the fixed cap 27 until its end face 24a abuts against the supporting bracket 16. In a modification the sleeve 23 has elongated slots engaging a projecting stud on a collar, fixed on the end of the roller. The collar may have a roughened or adhesive portion over which the blind material is wound.
Patent GB-1433891-A (GB)
Title: Endo alicyclic end capped polyimide resins
IPC: C07D519/00
Filed: 1973-03-21
Abstract: 1433891 Unsaturated polyimide prepolymers TRW Inc 21 March 1973 [3 April 1972] 13679/73 Headings C3R and C3P Thermosetting polyimide prepolymers of 2 to 21 mols of an organic carboxylic dianhydride and correspondingly 1 to 20 mols. of a diamine or diisocyanate are end-capped with an endocompound or with a combination of such a compound and up to an equal molar proportion of an olefinic compound capable of reacting with the dianhydride, e.g. allylamine or 4-amino-1-butylene. In the endo-compound Y 1  to Y 7  are independently H, Ha, NO 2 , aryl, alkaryl or C 1-6  alkyl or alkoxy; X is CO, O, S, CH 2  or CH 2  substituted by Ha, alkyl or aryl; Z 1  is a direct link, arylene or C 1-4  alkylene; and Z 2  is NH 2  or -NCO. The prepolymers may be thermoset at 230‹ to 370‹ C. for up to 4 hours and up to 700 atmospheres, optionally in conjunction with up to 10% of an olefinic cross-linking agent. Numerous dianhydrides, diamines or diisocyanates, end-cappers and olefinic comonomers are specified. It is also stated that additional olefinic sites may be provided in the polyimide backbone by using olefinic reactants, e.g. diamino-styrene and stilbene dianhydride.
Patent GB-950545-A (GB)
Title: Preparation of steroid compounds
IPC: C07J75/00
Filed: 1962-04-10
Abstract: 17b  - Hydroxyandrostano - [3-2-c] - pyrazole and 17b -hydroxy-17a -alkyl (C1-C4)-androstano-[3-2-c]-pyrazole are prepared by treating the corresponding 4-androsteno-[3.2-c]-pyrazole with a liquid ammonia solution of an alkali or alkaline earth metal and an alkanol containing 1 to 6 carbon atoms. Specification 911,814 is referred to.
Patent GB-923351-A (GB)
Title: Improvements relating to compressed air circuit breaders
IPC: H01H33/56
Filed: 1961-04-17
Abstract: 923,351. Air-blast switches. CONTINENTAL ELEKTROINDUSTRIE A.G. VOIGT & HAEFFNER. April 17, 1961 [April 16, 1960], No. 13739/61. Class 38 (5). The control air container of a circuit-breaker is at earth potential and is fed with compressed air from the high voltage contact chamber. As shown for one phase of a polyphase multibreak arrangement local air reservoirs 6, 7, 8, each feed two breaker chambers 4, 5 through support insulators 1, 2, 3 and non-return valves 12, 13. The control air container 15 is fed from the chambers 4, 5 through insulating pipes 14 and non-return valves 16, 17, 18. A control device 19 is operable to connect contact operating means (not shown) within the chambers 4, 5 either to the control air container 15 or to the atmosphere. Alternatively, the control air container may comprise tubular members forming part of the supports for a number of hollow insulators which support the high voltage chamber and carry the air to and from the breaker chamber (Fig. 2, not shown). In a further alternative arrangement the contacts may be operated by a mechanical linkage including an insulating tube (which may be inside one insulator), driven by pneumatic means from the control air container. The insulating tube may also form part of the connecting pipe.