baber/WOPTO huggingface dataset:
Patent GB-1270019-A (GB)
Title: Air compressor
Inventor: GRIMMER JOHN E
IPC: F04B35/00
Filed: 1969-07-05
Abstract: 1,270,019. Reciprocating compressors. J. E. GRIMMER. July 5, 1969, No.34008/69. Heading F1N. A multi-cylinder air compressor is provided with a cylinder head 20 constituting a receiving chamber 45 for air compressed in the cylinders, the outlet ports 65 from each cylinder compression chamber 49 being arranged to discharge into the receiving chamber 45 at regions of lowpressure so as to enhance each cylinder's exhaustion. The low-pressure regions are created by Venturi-like constrictions 51 in the chamber 45 through which air discharged from the cylinders has to flow during its passage to a compressed air outlet 19. An annular valve assembly 63 shown diagrammatically in Fig. 3 controls the entry and exit of air to and from its cylinder 43. Each valve assembly 63 comprises a central valve controlled inlet port 64 and a pair of valve controlled outlet ports 65. The inlet valve is held open continuously by an unloader 67 when the pressure in a reservoir fed by the compressor reaches a predetermined value. The compressor is driven by an I.C. engine having pistons driving the compressor's crank-shaft, Fig. 1 (not shown), the engine-compressor being mounted on a wheeled vehicle having means for coupling the engine to propel the vehicle. The engine-compressor is cooled by liquid pumped through passages 42, 58.
Patent GB-454196-A (GB)
Title: Improvements in railway rail joints
IPC: E01B11/30
Filed: 1935-12-09
Abstract: 454,196. Railway - rail joints. BAK, A. S., Suldrup, near St÷vring, Denmark. Dec. 9, 1935, No. 34046. [Class 104 (ii)] A rail joint comprises two fish-plates provided with tread portions h, j projecting into recesses f, g formed in the rail ends. One end of each tongue h, j projects into the corresponding rail end for a shorter distance than does the opposite end into its rail end, the former end projecting into its rail end for a slightly greater distance than the width of the maximum gap between the rail ends.
Patent GB-1293558-A (GB)
Title: Dyestuff intermediates and processes for their manufacture
IPC: C09B62/485
Filed: 1969-10-31
Abstract: 1293558 Tetrafluorocyclobutylacylamino compounds FARBWERKE HOECHST AG 31 Oct 1969 [7 Nov 1968] 34046/70 Divided out of 1293557 Heading C2C The invention comprises compounds of the formula where A is an optionally substituted phenyl residue, R 1  and R 2  each represent an optionally substituted alkyl group, c and d each represent a hydrogen atom, an alkyl, alkoxy, phenyl, phenoxy or phenylthio radical and in addition c represents a chlorine or bromine atom or a trifluoromethyl group or an acylamino radical derived from a monocarboxylic acid, an organic monosulphonic acid, a carbamic acid or a carbonic acid monoester and either R 1  and/or R 2  or c contains a residue -NHZ where Z is the acyl residue of 2,2,3,3-tetrafluorocyclobutane-1-carboxylic acid or #-(2,2,3,3-tetrafluorocyclobutyl)- acrylic acid. They are prepared by condensing the appropriate amine with a Z halide. N - Ethyl - N - (4 - aminophenylcarbonyloxyethyl)-m-toluidine is prepared by palladium-oncharcoal hydrogenation of the corresponding 4-nitro compound which is prepared from pnitrobenzoyl chloride and N-ethyl-N-#-hydroxyethyl-m-toluidine. 5-Amino isophthalic acid bis-(N-ethyl-N-#- hydroxyethyl-m-toluidine) ester is prepared by palladium-on-carbon hydrogenation of the corresponding nitro compound which is prepared from 5-nitro-isophthalic acid chloride and N-ethyl-N- #-hydroxyethyl-m-toluidine.
Patent GB-665672-A (GB)
Title: Improved coated wood product
IPC: B27D1/04
Filed: 1947-12-24
Abstract: 665,672. Plywood sheets; plugging knot holes &c. WELCH, A. R. Dec. 24, 1947 [Aug. 9, 1944], No. 34237/47. Classes 145 (i) and 145 (ii) A plywood product comprises at least one outer ply having cracks, fissures or imperfections in its outer surface, covered with a mixture of synthetic thermosetting resin and discrete wood particles of sanderdust and/or sawdust in the form a layer of sufficient thickness to fill the cracks &c. and present a smooth outer surface, the said layer being bonded to the ply under heat and pressure by the conversion of the synthetic thermosetting resin. A plywood product is made up of a central ply 12<SP>1</SP> and two outer plies 10<SP>1</SP> and 16<SP>1</SP> bonded by suitable adhesives, the latter plies having their grains running at right angles to the grain of the central ply and arranged so that the cracks, caused by peeling the plies from the log and flattening them, are outermost. A mixture of sanderdust and sawdust and synthetic resins is bonded to the exposed surface in the form of a layer 24<SP>1</SP> by a hot press. Surface defects in plywood may be filled with the mixture and a further layer bonded on top.
Patent GB-891193-A (GB)
Title: Improvements in method and means for making soldered joints
Inventor: KRUBER FREDERICK ARCHBOLD
IPC: B23K3/06
Filed: 1959-10-09
Abstract: 891,193. Soldering. ERIE RESISTOR Ltd. Sept. 20, 1960 [Oct. 9, 1959], No. 34246/59. Class 83 (4). In making soldered joints, the parts to be joined are located in conjunction with an apertured mask, molten solder in a bath is vibrated and the mask is lowered into the bath to effect the joining of the parts. A bath 1 containing a eutectic solder alloy is supported on springs and coupled to an electrically operated vibratory e.g. ultrasonic device and a beam 3 extending lengthwise of the bath and slidable on vertical posts 5 has at each end a bracket 4 and rests on the ends 6 of one or more levers 7 having rollers 10 supported on a cam 9 so that rotation of the cam raises or lowers the beam. The brackets 4 support the end pieces 12 of a non- rusting steel trough 11, forming the mask, having a flat base provided with apertures 11a to allow solder to contact a printed-circuit board or boards in the trough. A micro switch operated by the mechanism starts up the vibratory device just before the trough meets the solder, to float thereon, and stops the device just after the trough rises to leave the solder. The circuit boards are flux coated by brushing, roller coating or spraying, are preheated in an oven and are then arranged in the trough e.g. by clamps. The vibratory device may be immersed in the solder.
Patent GB-362132-A (GB)
Title: Improvements in or relating to mechanism for automatically severing the terminal threads of a stitched book or the like
IPC: B42B2/02
Filed: 1930-11-14
Abstract: 362,132. Boot-stitching machines. POLLAK, J. E., 20, Holborn, London.- (Brehmer Geb.; Plagwitz, Leipsic, Germany.) Nov. 14, 1930, No. 34331. [Class 112.] Thread cutters.-Means for severing the idle thread between stitched book signatures described in Specification 362,863, comprise an adjustable selector cutter mechanism. The signatures S are fed to the oscillatory sheet carrier 23 which positions them beneath the stitching needles in the usual manner. When the requisite number of signatures forming a complete book arc have been stitched and an idle end stitch made, the carrier travels forward and the portion b of the thread leading from the idle stitch to the last signature, together with the portion a fed from the needle c, are positioned below the selector needle 17. The thread is carried over the bevelled point 14<1> of the needle 14 and is drawn into the recess 22<1> of the bar 10. As the first signature of the next book is fed to receive the stitching needle, the thread is drawn over the cutting blade 21 to be severed.
Patent GB-433119-A (GB)
Title: Improvements in servo-motor control devices
IPC: G05D23/12
Filed: 1933-12-06
Abstract: 433,119. Fluid - actuated valves. GAS LIGHT & COKE CO., and HOLDWAY, S., 84, Horseferry Road, Westminster. Dec. 6, 1933, No. 34362. [Class 135] A control device such as a furnace damper or series of dampers is displaced by a servomotor or relay controlled by valves operated by a pair of similar thermostats 1, 2, respectively pivotally connected at 6, 7 to levers 8, 9 connected by a floating pivot 13, the pivot connection 7 lying between the floating pivot 13 and the connection 11 to the means operating the valves of the servo-motor, a greater range of movement being thus obtained, which movement decreases with the departure from the horizontal. The thermostatic elements may be set by a hand wheel 43 and wormshaft 42 engaging worm-wheels 40, 41 on nuts 38, 39 engaging right and left hand screws on the extensible spindles 4, 5. The means controlling the servo-motor comprise a link 12 connected to an arm 14 which is pivoted at 15 and acts on a cam 16 carried by a spring- drawn arm 50 pivoted at 17. The arm 50 engages a crank-arm 20 on a shaft 21 having arms 22, 23 at different angles linked to the spindles of two piston valves. Each piston valve comprises two pistons 44, 45 controlling cross-connected ports 34, 35 connected to the opposite ends of the servo-motor cylinder. The sensitiveness of the device is varied by a screw 46 tensioning a spring 47. The Provisional Specification states that an inching or step-by-step movement may be given by the servo-motor in either direction to the device to be controlled, by the periodic operation of trip valves operated by a pawl displaced by the thermostats through a rack and pinion.
Patent GB-362630-A (GB)
Title: Improvements in or relating to gas-fired air heaters
IPC: F24H3/08
Filed: 1930-11-15
Abstract: 362,630. Fluid-actuated valves; thermally-actuated valves. KEITH & BLACKMAN CO., Ltd., J. and KEITH, G., 27, Farringdon Avenue, London. Nov. 15, 1930, Nos. 34390/30 and 22368/31. [Class 135.] Valves controlled by pilot or relay valves.-In a gas-fired air heater comprising a battery of flues 1 uprising from a combustion chamber 4 and traversed by products of combustion from gas burners 8, and a fan 13 disposed to one side of the battery, a hinged louvre 12 or a hinged grid is interposed in the path of the air discharged by the fan and is adapted to turn on and off the gas supply with the starting and stopping of the fan. A thermostat comprising a bimetallic strip 17 is provided in a chamber 15 containing a pilot flame 14 and has a free end 18 which projects into the path of the louvre 12 if the pilot flame is extinguished, preventing the opening of the gas valve. The louvre 12 acts on a relay valve 11 controlling the main gas valve 10 in the manner described in Specification 213,394, [Class 64 (ii), Heating systems &,c.]. In a modification, Fig. 6, a grid 32<1> is hinged at 35 and operates directly the main gas valve 33, a pin 36 on the grid engaging a horizontal slot 37 in a slidable member 38 connected by a rod 39 to a thermostat strip 40 acted on by the pilot flame. As shown, the pilot flame is extinguished and a screw pin 41 on the member 38 is out of alignment with the operating pin 331 of the gas valve 33 ; on lighting the pilot flame the pins come into alignment and the starting of the fan turns on the gas supply. In a further modification the slidable member 38 is adapted to operate a relay valve.
Patent GB-173236-A (GB)
Title: Improved process for the preparation of rare metals
IPC: C22B35/00
Filed: 1921-12-21
Abstract: 173,236. Westinghouse Lamp Co., (Assignees of Marden, J. W.). Dec. 21, 1920, [Convention date]. Dry processes of extracting refractory metals; crucibles.-Refractory metals such as zirconium. titanium, uranium, thorium, vanadium, and tungsten are obtained by reducing by means of a metal a salt of the refractory metal which does not volatilize at the temperature of the reaction, and thereafter volatilizing at a higher temperature all the salts formed by the reduction. Zirconium potassium fluoride may be mixed with aluminium, iron, or other metal and heated in a molybdenum or other crucible preferably in an evacuated furnace in which the crucible is surrounded by a high frequency coil whereby secondar currents are induced in the crucible and contents. When the reaction is complete, the temperature is raised whereupon the products are volatilized, leaving metallic zirconium. Potassium titanium fluoride, uranium fluoride, and thorium tetra-chloride may be similarly treated. Slightly less than the theoretical quantity of reducing metal may be used. In some cases the crucible may be dispensed with and the mixture formed into a coherent mass.
Patent GB-1000980-A (GB)
Title: Improvements in or relating to proximity detection means
Inventor: AINSCOUGH JOHN
IPC: G08B13/26
Filed: 1962-09-07
Abstract: 1,000,980. Intruder or fire alarms. ALEXANDER WRIGHT & CO. (WESTMINSTER) Ltd. Oct. 31, 1963 [Sept. 7, 1962], No. 34417/62. Heading G4N. [Also in Division G1] A proximity detector system, e.g. for a burglar alarm or a fire alarm whereby hot currents of air are detected) includes an R.F. oscillator OS (Figs. 1, 2) coupled to an antenna A and inductively coupled via L1, L2 to a detector circuit D which thereby receives a portion of the oscillator energy output. The transferred energy is rectified by diode D1 and energizes a relay coil L3 of a differential relay RL, the coil L4 of which is fed with an oppositely directed constant current of a magnitude, which exactly opposes the detected current when there is no energy absorbing or reflecting body in a field radiated by the antenna A, and a movable contact CT is held in a neutral position. When an energy-absorbing body enters the area R of the radiated field there is less energy available for transfer to the detector circuit and the current in L3 is reduced and the relay is unbalanced, contact CT engaging a fixed contact to operate an alarm AL (not described). An energy reflecting body entering the protected area increases the current in L3 causing contact CT to engage another fixed contact also operating the alarm. Alternatively the coil L3 may be omitted and the current from the diode D1 fed direct to the coil L4 in the opposite direction to the pre-set current therein. A floating battery B may be provided to energize the system in the event of mains failure.
Patent GB-214296-A (GB)
Title: Side and rear screens for motor cars
IPC: B60J1/00
Filed: 1923-09-14
Abstract: 214,296. Ordish, F. W. Sept. 14, 1923. Windscreens.-In a motor vehicle provided with a collapsable hood the rear side-screens a, a<1> are hinged to standards b, b<1>, which are removably attached between the sides of the body and the hood, and are provided with interlocking studs e and key-hole slots d so that, when the hood is collapsed, the two standards b, b<1> may be coupled together to form a single standard constituting, as shown in Fig. 3, the central pillar of a V-shaped screen extending transversely across the vehicle to protect the passengers in the rear seats. When the standards b, b<1> are used separately they are preferably mounted in sockets c on the sides of the body and form abutments for the front hinged side-screens; when used together they are supported in a socket f at the rear of the front seat and the screens a, a' are preferably arranged to swing aside with the opening and closing movements of the doors.
Patent GB-521846-A (GB)
Title: Improvements in apparatus for compressing slivers when delivered from hackling, combing and like machines
IPC: B65H54/84
Filed: 1938-11-26
Abstract: 521,846. Compressing slivers. FAIRBAIRN LAWSON COMBE BARBOUR, Ltd., and BEE, J. R. Nov. 26, 1938, Nos. 34453/38 and 30477/39. [Class 120 (iii)] A presser foot 2 is employed to compress slivers delivered from hackling, combing and like machines, and is rotated by the pile of slivers to wind up the spring 13, so that when it is raised from the pile the foot 2 is returned by the spring to its original position. The foot 2 is carried by the hollow shaft 3 mounted on ball bearings on the spindle 6 at the end of the arm 7. This arm is supported at the top end of a sliding rack 10d, Fig. 1, engaged by a toothed pinion 10a which also engages the fixed rack 10c and is carried at the end of the telescopic rod 10 connected between the pinion 10a, 10f and the crank' 9. The two parts of the telescopic connecting rod are connected by spring pressed pawls 15, 16. These pawls permit the lengthening of the connecting rod as the pile of slivers increases in height, but it can only be shortened by the release of the pawls. Instead of employing a telescopic connecting rod, the pawl and ratchet device 17a, 18, shown in Fig. 5 may be employed. The sliver passes from the rollers 30, 30a of the hackling or like machine, through the shoot 31, between the rollers 32, 32a to descend to the rotating plate 20. As this plate rotates with the sliver upon it, the foot 2 compresses the sliver and is carried round by it; as the foot rises it is turned back by the spring 13.
Patent GB-941616-A (GB)
Title: Fungicides
Inventor: FOX HENRY MORRIS
Filed: 1960-10-10
Abstract: A fungicidal composition comprises a mixture of pentachloronitrobenzene and an azo compound of the formula H2N-R-N=N-R1-X where R is a residue of a benzene ring optionally having as substituent one or more alkyl or alkoxy radicals of 1 to 4 carbon atoms or halogen atoms; R1 is a residue of a benzene ring having as substituent one or more alkyl or alkoxy radicals of 1 to 4 carbon atoms or hydroxyl radicals; and X is a hydroxyl group, the group X and the amino radical shown in the formula being attached to their respective benzene residues at positions para to that at which the azo group is attached.  The azo compound may be present as one of its salts, e.g. an alkali metal salt such as sodium or acid addition salt such as the hydrochloride or p-toluene sulphonate.  The composition may also comprise a carrier, e.g. a powder diluent.
Patent GB-1158564-A (GB)
Title: Method of and apparatus for Soldering or Tinning
IPC: B23K3/06
Filed: 1966-08-02
Abstract: 1,158,564. Soldering. ELECTROVERT MFG. CO. Ltd. 2 Aug., 1966 [1 April, 1966], No. 34669/66. Heading B3R. In soldering or tinning workpieces the workpieces are moved in contact with a flowing stream of molten solder in which ultrasonic vibrations are directly generated. A tank 10, Figs. 1 and 3, containing molten solder 15 has a horizontal partition wall 13 with an opening 14 therein at one end and an elongated nozzle 25 upstanding therefrom at the other end. Solder is pumped from section 16 above the wall 13 by a turbine pump having a rotor 20 in the opening 14 to section 17 below the wall 13 and through the nozzle 25 where it overflows into the section 16 forming a wave 30. An ultrasonic energy transmitter 35 has a rod portion 36 extending through the side wall of the tank with a large area triangular portion 37 located within the nozzle 25 and the transmitter is vibrated by a transducer 40 mounted on the tank. The wave over which a printed circuit board is moved from left to right in Fig. 3 has three sections, a leading section 30A, a central higher section 30B and a trailing section 30C, the section 30A preheating the work, the central section cleaning the preheated work and the trailing section effecting soldering or tinning. In a modification a straight cylindrical rod transmitter is introduced into the nozzle through an aperture or notch in an end wall of the tank and in a further modification the transmitter 55, Fig. 7, has a rod 56 connected to a transducer 40 beneath the tank, a coolant chamber 51 being provided to solidify solder leaking from the tank and form a seal. The transducers comprise ferro-electric crystals heated to 2000 C. and subjected to 10,000 volt charge to be converted to act as piezo electric crystals, and the transmitters are of brass, stainless steel &c. Oil &c. may be dispersed on the molten solder to protect the latter. A second solder wave without ultrasonic energization may be provided in the same apparatus or in a second apparatus over which the printed circuit passes after leaving the ultrasonically energized wave to provide a smooth solder surface.
Patent GB-521825-A (GB)
Title: Improvements in or relating to electro-mechanical brakes
IPC: B66D5/00
Filed: 1938-11-29
Abstract: 521,825. Brakes. ELLISTON E. R. Nov. 29, 1938, No. 34751. [Class 103 (i)] In a brake applied by a weight and held off by an - electromagnet an initial brake pressure is applied by a weight and/or spring and a gradually increasing pressure is then applied by a further weight. Brake shoes b, c are connected by equalizing mechanism i, n, link s, lever t and rod x to the armature 14 of an electromagent y. The lever t is connected also at 4 to an inner tube 1 between 'the lower end of which and a piston 9 secured to an outer tube 2 is a spring 5. A weight 7 is secured to the tube 2. The piston 9 is slidable in a fixed tube 10 having a non- return valve 12 and an adjustable passage 13, these parts thus forming a dash-pot. With the magnet energized and the brake 'off,' the parts are in the position shown in Fig. 2, with the lower end of tube 2 in contact with a shoulder on the end 3 of tube 1 and the spring 5 compressed. When the magnet is de-energized, the armature 14 first falls assisted by the expansion of the spring 5 to engage the shoes b, c with the drum a, The weight 7 and tube 2 then fall retarded by the piston 9, thus re-compressing the spring and applying a gradually increasing pressure to the lever t and the shoes b, c. The value of the initial brake pressure can be predetermined by selecting the amount of compression of the spring 5 at the instant of application of the brake shoes and by the provision of weights or springs to counterbalance a desired amount of the weight of the armature 14. In a modification, the magnet and dash-pot assembly are arranged above the brake.
Patent GB-420943-A (GB)
Title: Improvements in or relating to composite packing rings for pistons and stuffing boxes
IPC: F16J9/16
Filed: 1933-12-11
Abstract: 420,943. Pistons ; stuffing boxes. MADSEN, T., 30, Stampgatan, Gothenburg, Sweden. Dec. 11, 1933, No. 34762. Convention date, Nov. 25. [Classes 122 (i) and 122 (v)] Piston or stuffing- box packing comprises two split rings having conical mutually engaging surfaces, which have opposite inclinations at the split and at the part opposite the split. As shown in Fig. 2, the higher edge 5<a> of the conical surface adjacent the slit 3 is inside the ring while opposite the slit the higher edge 5<b> is outside the ring. In the modifications shown in Figs. 4 and 6 each conical surface comprises two portions separated by an axial shoulder 7. The higher edge may be inside at the split and outside opposite the split as shown in Fig. 4, or vice versa, as shown in Fig. 6. The width of the rings at the inner periphery may be made uniform as shown in Fig. 6. Fire and scraper rings may be similarly constructed.