baber/WOPTO huggingface dataset:
Patent GB-817436-A (GB)
Title: Improvements relating to starting mechanism for internal combustion engines
IPC: F02N1/00
Filed: 1957-04-15
Abstract: 817,436. Starting. RODICK, A. J., POUNDER, C. C., and REBBECK, Sir F. E. April 15, 1957, No. 12170/57. Class 7(5) In an internal - combustion engine which is set in motion for starting by the admission of compressed air to the engine cylinder combustion spaces through a starting valve assembly which includes a starting valve opened by starting air and closed by a closing air pressure in a pipe line controlled by a pilot valve which is under control of the engine starting and stopping control gear, means for locking the starting mechanism comprises a pneumatic interconnection between the pilot valve and an interlock valve which opens the pipe line to atmosphere when pre-start conditioning apparatus is correctly set for starting the engine thus releasing the closing air pressure and permitting the starting valve to open when the engine control gear is in the start position the interlock valve being controlled by the pre-start conditioning apparatus to pressurize the pipe line and lock the starting valve against opening when the apparatus is not correctly set for starting the engine. The supply of starting air may be prevented if the engine turning gear has been inadvertently left in the engaged position and/or there is a fault in the lubricating and/or cooling systems. When the interlock valve is under control of the engine lubricating and/or cooling system, the interlock valve may be actuated by fluid pressure in the system. As shown with the turning gear 2, 3 in working position the stem of valves A<SP>1</SP>, A<SP>2</SP> is displaced so that the valve A<SP>1</SP> is open and the valve A<SP>2</SP> is closed. If an attempt is made to start the engine by admitting starting air from the reservoir 5 to the starting system and moving the engine control gear to start position the cam 4 will be moved to the position shown in which the pilot valve member 10 is raised off its seat and air under pressure from the reservoir 5 will be admitted to the top of the piston 17 of the starting valve assembly by way of pipe E, interlock valve assembly A and passage 23, pipe D, pilot valve assembly B and pipe F so that the pressure on the top of the piston 17 will hold the starting valve closed on its seat and starting air cannot pass through the pipe 6 to the engine cylinders. When the turning gear is disengaged the valves A<SP>1</SP>, A<SP>2</SP> will be displaced to the right and the pressure in the pipe F is released thus allowing the starting valve to open. In the stop position the valve 10 is lowered and starting air will again hold the starting valve closed.
Patent GB-1515259-A (GB)
Title: Process and an apparatus for recovering drift oil from a water surface
IPC: E02B15/10
Filed: 1977-03-23
Abstract: 1515259 Boundary layer control BRIDGESTONE TIRE KK 23 March 1977 [29 March 1976 8 Dec 1976] 12188/76 Heading F2R [Also in Division B1] Oil is recovered from a water surface by a ship, Fig. 1, having a guide member 3 which guides the oil Q into a collecting tank 4 from which it is pumped to a storage tank 7 through a pipe 6, the inside wall of which is supplied with a surfactant. Floating solid matter is removed from the oil by endless bonds 20, Fig. 7, driven by pulleys 18, 19 and water from a nozzle 22. Fig. 3 shows a surfactant reservoir 13, inside the mouth of the pipe 6, to which surfactant S is supplied through a duct 14 to flow out through a slit 12. Fig. 4 shows a modification in which a rubber diaphragm 15 is positioned over the slit 12 and bears against the wall to form a slit 12<SP>1</SP>. In Fig. 5 (not shown), the reservoir is outside the pipe and communicates with the inside through slits. In the embodiment shown in Fig. 6, the reservoir 13 is within the collecting tank 4 and a rubber membrane 15 with an outlet near the mouth of the pipe 6 is provided. Several examples of suitable surfactants are given.
Patent GB-553199-A (GB)
Title: Improvements in or relating to strand feeding mechanism for knitting, winding and other textile machines
IPC: D04B15/38
Filed: 1941-09-20
Abstract: 553,199. Yarn-feeding roller arrangements. SCOTT & WILLIAMS, Inc. Sept. 20, 1941, No. 12199. Convention date, Sept. 20, 1940. [Class 120 (ii)) [Also in Group VIII] A device for positively feeding strands to a knitting- machine or winding machine comprises frustroconical members 10, 12 rotatable about angularly disposed axes and having intermeshing recesses 11 and teeth 13. Guide members 35, 36 are provided to guide strands at different distances from the small ends of the members 10, 12 to vary the rate of feeding of the strands. The guide members 35 are freely pivoted in the paths of the strands between tension devices and the delivery side of the feeding device so that the rate of delivery by the members 10, 12 is determined by the strand tension depending upon the demand by the machine. The teeth 13 have top end walls lying substantially parallel to the axis of the member 12 to provide strand seizing corners. By cutting away the apices 'of the conical members 10, 12 an open space is provided into which the strand can be moved when it is not required to be fed to the machine. Alternating long and short grooves and corresponding teeth may be provided upon the conical members.
Patent GB-1044948-A (GB)
Title: Improvements in or relating to electrically-operable heating devices
IPC: H01H37/66
Filed: 1962-03-30
Abstract: 1,044,948. Soldering irons. G. S. MEEK. April 1, 1963 [March 30, 1962], No. 12307/62. Heading B3R. A thermostatically - controlled electric soldering iron comprises a casing 1 provided with a bit 2 heated by a coil 5 in series with contacts 13, 13a (connections not shown) arranged to open at a desired temperature. The moving contact 13 is carried by a resilient magnetic strip 6 mounted on a block 10 pivoted at 11 in the casing 1. The bit 2 has a coefficient of expansion greater than that of the casing 1 and a rod 8 is arranged as shown to extend into a bore 9 in block 10. A screw 12 closes bore 9 and is adjustable to determine the temperature at which the expansion of bit 2 and rod 8 opens the contacts 13, 13a. A magnet 16 provides snap action. Contact 13a may be adjustable to vary the rate of cycling of the contacts. A spring (not shown) may be mounted on the pivot 11 to urge contact 13 towards contact 13a. Spacers 7 for locating rod 8 also minimize air convection inside the casing 1.
Patent GB-1458176-A (GB)
Title: Process for the preparation of an organic sulphide
IPC: C07C319/24
Filed: 1975-03-25
Abstract: 1458176 Sulphides CHIMOSA CHIMICA ORGANICA SpA 25 March 1975 [27 March 1974] 12309/75 Heading C2C Organic sulphides wherein R and R<SP>1</SP> each represents a straight or branched chain alkyl group containing from 1 to 30 carbon atoms and wherein n is 1, 2, 3 or 4, R and R<SP>1</SP> being the same or different, are prepared by reacting one or more alkyl halides containing the appropriate alkyl group or groups with an alkali metal sulphide or polysulphide in an aqueous medium in the presence of a catalyst which is an organic quaternary salt having the general formula where M is a pentavalent ion of P, N or another element of Group Va of the periodic table of the elements, and each of R 1 , R 2 , R 3  and R 4  is an alkyl radical containing from 1 to 30 carbon atoms or an aralkyl radical, linked with a stable covalent bond to the M ion, and X- is a halide or hydroxide ion. Examples prepare di-n-octyl disulphide, di-n-dodecyl mono- and di-sulphides, di - n - octadecyl mono- and di - sulphides, and a mixture of di-n-octadecyl, di-n-dodecyl and n-octadecyl-n-dodecyl sulphides.
Patent GB-601664-A (GB)
Title: Improvements in electrical control systems
IPC: G05B11/01
Filed: 1944-06-29
Abstract: 601,664. Automatic control systems. LINDE AIR PRODUCTS CO. June 29, 1944, No. 12347. Convention date, Sept. 9, 1943. [Classes 38 (ii) and 38 (iv)] [Also in Group XXXVII] Arcs.-In a system for supplying, from an A.C. source through a normally non-conductive grid-controlled thermionic rectifier, a current consuming device controlling a voltage, rise of the voltage above a predetermined value renders a normally conductive thermionic pilot valve non-conductive by grid control, thereby rendering the rectifier conductive by grid control. In an automatic system for controlling a D.C. electric motor feeding a welding electrode the D.C. voltage, from a potentiometer 21 supplied through a bridge rectifier 30 from a potentiometer 20 connected across the welding gap, constitutes negative bias in the control grid circuit of a gas-filled tetrode C and acts in opposition to an alternating voltage, developed across a resistor 22, which normally renders the tetrode conductive. On rise of the welding voltage to a predetermined value, selected by the setting of potentiometers 20 and 21 and corresponding to a predetermined arc length, the tetrode ceases to conduct. This results in the disappearance of a D.C. voltage across a resistor 10, in the anode circuit of the tetrode, and since this voltage normally biasses to cutoff a pair of gas-filled triodes A, B forming a full wave rectifier supplying the welding feed motor (not shown) from transformer T, triodes A and B are rendered conductive and the welding feed motor started to shorten the welding gap. During welding periodic operation of the motor maintains the welding voltage constant automatically. Use of a triode in place of the tetrode is referred to. Rectifier 30 may be omitted in the case of D.C. welding. Suitable valves are referred to and operating data given.
Patent GB-623507-A (GB)
Title: Improvements in methods of making tubes of paper and the like and apparatus therefor
IPC: B31F1/00
Filed: 1947-05-07
Abstract: 623,507. Making paper tubes. EPSTEIN, H. T. May 7, 1947, No. 12370. [Class 99(ii)] A paper &c. strip A is made limp by contact with a wet roller 14 and bent about a stationary mandrel 9 by a former 16 to a diameter less than that of the finished tube. Its resilience is restored by an electric heater 18, and the tubular strip is expanded against this resilience by a cone 20 so that it lies with its edges abutting on the enlarged extension 10 of the mandrel. A strip B coated with adhesive by the roller 24 is bent by the former 26 so as to cover the strip A with its abutting edges staggered with respect to those of the strip A. The tube is dried by the heater 28 and drawn through the apparatus by rollers 30.
Patent GB-121098-A (GB)
Title: Improvements in or in connection with Hook-and-eye Dress-fastenings.
Inventor: HAWKINS FRANK
IPC: A44B13/00
Filed: 1918-07-31
Abstract: 121,098. Hawkins, F. July 31, 1918. Hooks and eyes.-The eye member of a hook- and-eye fastening is provided with a separate or integral shield-plate, whereof a solid portion directly underlies the eye so as to prevent damage to the fabric by the point of the hook member. Fig. 3 shows a separate shield-plate a sewn to the fabric e, while in the forms shown in Figs. 6 and 8, the eyes m, t have integral shield-plates n, v.
Patent GB-1028253-A (GB)
Title: Tape drive mechanisms of portable magnetic tape recording and playback machines
Inventor: ATSUMI KATSUYA
IPC: G11B15/18
Filed: 1964-03-25
Abstract: 1,028,253. Switches held set and freed mechanically. AKAI ELECTRIC CO. Ltd. March 25, 1964, No. 12523/64: Heading H2B. [Also in Division G5] A push-button switch assembly for a tape recorder (see Division G5) comprises a T-shape slide member 40 which is moved vertically downwards by action of a " play " switch P to close contacts of a switch SW2 via a pin 58 and also to actuate a microswitch SW3. Actuation of button P causes arm 71, Fig. 8 (not shown), to pivot, until it locks behind member 76. In moving, arm 71 causes bar 72 to slide moving with it the linkage to slide 40. On pressing the " stop " button S member 76 is deflected by member 82, Fig. 9 (not shown), to allow bar 72 and slide 40 to return to the inoperative position. Other push-buttons (not shown) are interlinked to actuate slide 40 without operating microswitch SW3.
Patent GB-697871-A (GB)
Title: Improvements in or relating to vehicles for drawing soil-working or like implements
IPC: A01B3/44
Filed: 1951-05-28
Abstract: 697,871. Agricultural implements. RUHRSTAHL AKT.-GES. May 28, 1951 [Sept. 22, 1950], No. 12525/51. Class 6(i) An agricultural tractor, of the kind having tool-carrying beams 2a, 2b pivoted to the chassis 1 on either side and raisable by power-operated links 4, is characterized in that the tools are carried by extensions 9 rotatable upon the ends of the beams and the beam-pivots 3 are constituted by the ends of adjustable links 5 which are also raised by power to vary the working height of the tools. The two beams may carry. oppositely-facing ploughs, 8b for one-way, ploughing, or they may be interconnected, as shown in Fig. 4, by a transverse tubular member 11 having a tool-bar 15 and a drawhook 16 for towed implements. The toolbar may be rotated about the tube axis and retained in various positions of angular adjustment. In a modification, Fig. 5, the transverse member 17 is suspended by links 18, 19 from the ends 10 of the beams, one of the links 19 being telescopicallyadjustable.
Patent GB-521328-A (GB)
Title: Process for manufacturing sliding clasp fasteners and automatic machine for carryingout said process
IPC: B21D53/50
Filed: 1939-04-27
Abstract: 521,328. Making sliding-clasp fasteners. FURTH, P. April, 27, 1939, No. 12690. Convention date, April 7. [Class 83 (ii)] [also in Group XXV] Sliding-clasp fasteners are made from a metal strip fed horizontally on edge through stamping and cutting out means, the severed elements being completed and immediately fixed to the fabric strip which is fed intermittently in a vertical direction. Surrounding the machine table 1 are shafts 2, 3 and 4 coupled by bevel gearing and carrying cams for operating the various parts of the machine. A metal strip A is fed by a reciprocating feeder device 7, 11 operated by cams 10, 12 through a stamping device 5 and on to a cutter 15 operated by an eccentric 16 which severs the individual elements C from the strip. The elements are then held between members 17, 18 while they are shaped by a tool 19 operated by a cam 20 and fixed to the pad D of the strip E by means of pinchers 24 operated by a cam 25. The strip E is fed from a drum 27 over tensioning pulleys 31, 32, and past the pinchers 24 by a reciprocating feeder device 33, 34 'operated by cams 35, 36 and 37. The finished fastener strip is fed to a receptacle 51 by two feed rollers 44, 45 pressed together by a spring 46, the roller 45 being driven by a chain 48 from the shaft 3. A toothed shoe 50 mounted on the arm 42 of a tensioning device prevents rotation of a toothed wheel 49 on the shaft of the driven roller 45 if the tension exceeds a predetermined amount. The cam 35 has a larger throw than the cams 36, 37 and is driven at intervals through a one revolution clutch to give the strip a greater speed to leave a space for subsequent division of the fastener strip into lengths.
Patent GB-985307-A (GB)
Title: Improvements relating to nuclear reactors
Inventor: DAWSON DENNIS JAMES
IPC: G21C9/004
Filed: 1961-04-07
Abstract: 985, 307. Reactor pressure vessels. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 26, 1962 [April 7, 1961], No. 12705/61. Heading G6C. In a nuclear reactor concrete pressure vessel, a non-return value permits outward flow from the vessel when the internal pressure exceeds a predetermined value. As shown, the pressure vessel 15 has an aperture 21 closed by the flap 27 which is urged into engagement with the seat 22 by the spring 31. An internal pressure rise above the limit causes pin 28 to steer to release 27. The valve closes against back-flow or stop 33 prevents movement over top dead centre. Specification 812,264 is referred to.
Patent GB-868683-A (GB)
Title: Improvements in turning tools
IPC: B23B27/08
Filed: 1958-04-22
Abstract: 868,683. Tools and tool-holders. KNOTT, A. W. April 14, 1959 [April 22, 1958], No. 12706/58. Class 83 (3). A turning-tool comprises a holder 1 stepped as 1A, and a block 2 secured to the holder by a screw 2A, the block having a lip 2B which engages a slot 2C in the holder. A blade 4 of constant thickness and having an enlarged section 4A is clamped by a dovetail slot 3 in the holder and block. In a modification a half dovetail slot is provided in either the block or the holder co-operating with an opposite rectangular slot, or the enlargement of the blade 4 and the slot in the holder may be any shape other than dovetailed. The slots 3 and 2C and the lip 2B are at 6 degrees to the vertical, to provide a front clearance angle for the blade. The blade may be secured directly to a tool-post having the features of the holder described.
Patent GB-1369519-A (GB)
Title: Process for the production of optically active dihydrochrysanthemo lactones
IPC: C07D305/12
Filed: 1972-03-17
Abstract: 1369519 Optical resolution of (Œ)-dihydrochrysanthemolactone SUMITOMO CHEMICAL CO Ltd 17 March 1972 [23 March 1971] 12742/72 Heading C2C  Optically active dihydrochrysanthemolactones (Formula I) are obtained by adding seed crystals of the optically active dihydrochrysanthemolactone to a saturated or supersaturated solution of the (Œ) lactone in an organic solvent and allowing the resulting mixture to stand to cause deposition of crystals of the optically active dihydrochrysanthemolactone, the concentration of the (Œ) lactone being, at a given temperature, between a maximum concentration above which, under the conditions of the process, contamination of the seeded crystals by (Œ) dihydrochrysanthemolactone occurs and a minimum concentration below which, under the conditions of the process, the said optically active dihydrochrysanthemolactone is not at a saturation concentration. Specified organic solvents are paraffinic hydrocarbons (e.g. n-hexane, cyclohexane, petroleum ether, ligroin), aromatic hydrocarbons (e.g. benzene, toluene, xylene), monoterpene hydrocarbons (e.g. #<SP>3</SP>-carene, α-pinene, #-pinene), halogenated hydrocarbons (e.g. carbon tetrachloride, tetrachloroethane), polar solvents mixed with water (e.g. methanol, ethanol, acetone) and mixtures thereof. The resolution is normally carried out at - 30‹ to +60‹ C. by allowing the seeded mixture to stand for 5 to 50 hours. The preferred concentration of (Œ) dihydrochrysanthemolactone in n-hexane at 25‹ C. is 7 to 10% by weight whereby a "quasistable state" is achieved, viz. racemic seed crystals cause no crystallization whereas optically active seeds do induce crystallization of the same. It is preferred to introduce simultaneously (+)- and ( - )-lactone into the organic solvent solution at spaced-apart zones therein, to cause crystallization of the independently selected optical isomers in each of the zones.
Patent GB-709861-A (GB)
Title: Reinforcing bars for concrete
Inventor: KILNER GEORGE
IPC: E04C5/03
Filed: 1952-05-20
Abstract: 709,861. Reinforcements for concrete. ISTEG STEEL PRODUCTS, Ltd. April 20, 1953 [May 20, 1952], No.. 12778/52. Class 20 (4) A reinforcing bar has two or more longitudinal ribs 2 joined by transverse ribs 6 the axes of which lie in planes inclined to the axis of the bar. The ribs 6 may all be inclined in the same direction, or those on one side of the bar may be inclined in the opposite direction to those on the other side. Preferably the ribs 6 on one side are staggered with respect to those on the other side and the angle between the plane in which each lies and the axis of the bar is advantageously 59 degrees 15<SP>1</SP>. Preferably the width of a rib 2 is 0.4 times the diameter of the bar and a rib 6 has the same depth as the rib 2 and is, in section, a trapezium with top equal to its depth and bottom twice this dimension.
Patent GB-805520-A (GB)
Title: New thio-ethers of phthalides
IPC: C07D307/88
Filed: 1957-04-18
Abstract: The invention comprises alkyl, phenyl and halophenyl thio-phthalides having the general formula <FORM:0805520/IV (b)/1> wherein R represents an alkyl, phenyl or halophenyl group and X represents hydrogen or chlorine.  They may be prepared by reacting a phthaldehydic acid <FORM:0805520/IV (b)/2> with a sulphydryl compound having the general formula RSH, R and X being as defined above.  The reaction may be effected at 15 DEG -150 DEG  C., but preferably at 80 DEG -140 DEG  C.  Equimolar proportions of reagents or an excess of either are utilizable.  Solvents, e.g. benzene, diethyl ether and toluene may be present.  The thio-phthalides may be recovered by pouring the reaction product into water or dilute alkaline solution followed by filtration and washing when the product is a solid or by extraction of the organic phase with benzene and subsequently removal of the solvent when the product is a liquid.  It is stated that esters having the structure <FORM:0805520/IV (b)/3> are formed as by-products.  The thio-phthalides are useful as parasiticides, and some are useful as herbicides (see Group VI). Examples describe the preparation of 3-n-butylthio-, 3-sec.-butyl thio-, 3-phenylthio-, 3-(1,1,2,2)-tetramethylbutylthio-, 3-octadecylthio-, 3-dodecylthio- and 3-(4)-chlorophenylthio-phthalides from the appropriate mercaptans and phthaldehydic acid, and 3-butylthio-chlorophthalide from 1-butanethiol and the chlorophthaldehydic acid obtained by monochlorinating o-xylene in the ring in the presence of ferric chloride at 5 DEG -15 DEG  C., then photo-chlorinating the product to obtain a ,a ,a ,a 1,a 1,x-hexachloro-o-xylene (x denoting ring chlorine) which is hydrolysed by the method described in Specification 779,981.  The unsubstituted phthaldehydic acid can be obtained similarly by chlorinating o-xylene with Cl2 in the presence of light and hydrolysing the resulting a ,a ,a ,a 1,a 1-pentachloro-xylene.ALSO:Parasiticidal and herbicidal compositions comprise thioethers of phthalides having the general formula <FORM:0805520/VI/1> wherein X is hydrogen or chlorine and R is an alkyl, phenyl or halophenyl group.  The thioethers are especially useful in the control of larval rootknot nematodes.  Specified thioethers are the 3-n-butylthio, 3-sec.-butylthio, 3-n-dodecylthio, 3-n-octadecylthio, 3-phenylthio, 3 - (4) - chlorophenylthio and 3 - (1,1,2,2) - tetramethyl butylthio phthalides and 3-n-butylthio chlorphthalide.  In an example, an aqueous dispersion of 10 p.p.m. of 3-butylthiophthalide is prepared and used in controlling larva  of nematodes of the meloidgyne species.  The preparation of the thioethers is given (see Group IV (b)).
Patent GB-769012-A (GB)
Title: An arrangement for the improved tempering of keyboard musical instruments
IPC: G10B1/04
Filed: 1954-05-03
Abstract: 769,012. Musical instruments. GROVEN, E. May 3, 1954, No. 12842/54. Drawings to Specification. Class 88 (2). In a keyboard musical instrument each key is associated with a plurality of sound-producing or sound-defining means of slightly differing pitches; electrical relay means are provided for automatically selecting the sounds which are nearest to the true intonation for the particular passage being played, a selected sound remaining selected until a chord is played which is inconsistent with it. The operation of a relay corresponding to a particular sound opens the circuits of relays corresponding to other sounds which do not harmonize with the first sound. Specification 422,669 is referred to.