baber/WOPTO huggingface dataset:
Patent GB-801935-A (GB)
Title: Improvements in arc melting furnaces
Inventor: DICKSON RONALD
IPC: C22B4/00
Filed: 1955-08-10
Abstract: 801,935. Arc melting furnaces. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 8, 1956 [Aug. 10, 1955], No. 23049/56. Class 39(3) [Also in Group II] In arc-melting high melting point metals such as zirconium and alloys, a safety space bridged by metallic conducting members 6 is provided between the wall 1 of the vessel holding the molten metal and the cooled outer wall 2. The safety space is either evacuated or has an inert; atmosphere maintained through pipes 9 at a pressure different from that of the vessel so that should either wall 1, 2 be perforated, a predetermined change of pressure occurs in the safety space and operates a warning signal or an automatic current-breaking device controlling current to the arc. The bridging members 6 are formed integral with either of the copper walls 1, 2 or may be separate entities brazed to both walls. The individual members 6 are annular with peripheral perforations or notches forming the spaces 7. The members 6 may be longitudinal fins leaving a free space at the upper and lower ends or may comprise a vertical corrugated element. The outer jacket 2 is cooled by a water spray or by a cylindrical water jacket 4 fitting over fins 3 on the outside of the shell 2. The fins 3 may be longitudinal or a series of annular rings or may be a vertical corrugated element attached to the shell 2 and to the water jacket 4, which has annular flanges 8 and water inlet and outlet 10. The vessel 1 may be of any cross section, e.g. circular, elliptical or rectangular and the walls may be parallel or tapered. A removable water-cooled base closes the lower end of the vessel. The top of the vessel is closed by a cover through which extend one or more electrodes, from which an arc is struck to the metal in the base of the vessel. The electrodes are consumable, but may be of a non-consumable cooled type and in this case a separate feed for raw material is provided. A double melting technique may be used, in which ingots iproduced are remelted as consumable electrodes.
Patent GB-683942-A (GB)
Title: Improvements in apparatus for transmitting and receiving radio oscillations
IPC: H04B1/54
Filed: 1947-08-22
Abstract: 683,942. Radio transmitting-receiving apparatus. SOC. FRANCAISE DES TELECOMMUNICATIONS. Aug. 22, 1947 [June 12, 1946], No. 23286/47. Class 40 (v). [Also in Group XXXV] A radio transmitter-receiver includes a receiver portion which comprises a frequency changer having a crystal controlled oscillator and a device adjustable to operate within a narrow band of frequencies, adapted to produce a control voltage which varies as the difference between the intermediate frequency and the frequency to which the device is adjusted, and which is used to stabilize the frequency of the transmitter. In Fig. 1, incoming signals are mixed with oscillations from crystal controlled oscillator 53, and the intermediate frequency is then mixed with oscillations from a low frequency, continuously adjustable oscillator 56, the resulting second intermediate frequency being detected and applied to audio frequency amplifier 46. The receiver may be tuned to any frequency in a wide continuous band, and the variable frequency oscillator is adjustable over the interval between successive harmonics of the crystal-controlled oscillator, so that a fixed second intermediate frequency may always be obtained. The second intermediate frequency is also applied to a discriminator 58 so that a control voltage output is obtained from the discriminator if the second intermediate frequency departs from its predetermined value. The local transmitter 49, 50, is adjusted to have approximately the same frequency as that of the receiver, and during local transmission, part of the energy from the transmitter is applied to the receiver, the control voltage from discriminator 58 being applied to a reactance tube 48 associated with the transmitter oscillator circuit to maintain the transmitter frequency constant and equal to the nominal reception frequency. Instead of providing a second mixing stage and variable oscillator, the first intermediate frequency may be applied to a discriminator, the tuning of which is adjustable over the interval between the successive harmonics of the crystal oscillator, so that control of the transmitter may still be effected at any frequency within the wide operating band. The transmitter-receiver may be of the frequency-modulated type. The modulation may be applied to the reactance tube 48 of the transmitter, in which case the control voltage is applied through a time-constant network, or it may be applied to a further reactance tube associated with the continuously adjustable oscillator 56. A portion of the voltage from the discriminator may be applied in opposition to the audio frequency modulation voltage as a form of negative feed-back. Figs. 7 and 8 (not shown) show suitable circuit arrangements. The aerial may be coupled to the first frequency changer, during reception, through the anode-screen capacity of the de-energized transmitting power valve.
Patent GB-296086-A (GB)
Title: Method of heating melting pots for type, stereotype and like casting machines
IPC: B41D3/00
Filed: 1928-08-13
Abstract: 296,086. Maschinenfabrik Augsburg- Niirnberg Akt.-Ges. Aug. 26, 1927, [Convention date]. Metal-pots.-Metal-pots for composing, stereotype-casting, and like machines are heated by means of the saturated vapour of a liquid, the boiling-point of which is near the temperature of casting, and the steam pressure of which is only a few atmospheres at the casting temperature. By this means, not. only the melting-zone proper, but also the remoter parts of the pot, and particularly the delivery parts, are sufficiently heated. The liquids used may be saturated calcium chloride, tetraline, aniline, melted naphthalene, paraffin, or mercury. The metalpot a, Fig. 1, may have double walls b, the saturated vapour being supplied to the intervening space from a central boiler, which may serve a number of pots. Alternatively, the space between the double walls may be partly filled with the heating-liquid, and the pot heated from the outside. The vapour may be passed through a heating-coil c, Fig. 4, immersed in the metal to be melted, and, in the case of a pot having a nozzle f controlled by a valve l, the heating-coil may be connected to the jacketcavities of the nozzle.
Patent GB-598803-A (GB)
Title: Improvements in or relating to apparatus for surface-hardening the threads of worms or other helically-threaded members
IPC: C21D9/32
Filed: 1945-09-11
Abstract: 598,803. Surface - hardening worm threads. BROWN & SONS (HUDDERSFIELD), Ltd., D., and THAW, W. J. Sept. 11, 1945, No. 23363. [Class 72] In surface-hardening a helically-threaded member, e.g. a worm, axial translation, as well as rotation, is effected by using an adjustable stop or stops i engaging a flank of a thread to enable it to pass oppositely inclined burners g and quenching means h immediately behind the burners. The ends a<SP>1</SP>, a<SP>2</SP> of the spindle d are supported between centres b<SP>1</SP>, b<SP>2</SP> on, and are rotatively connected by carriers c, c<SP>1</SP>, to axiallymovable spindles d, d<SP>1</SP>. The spindle d is guided in a tailstock e and the other spindle d<SP>1</SP> engages slidably but non-rotatively in a sleeve f to which rotary motion is given.
Patent GB-258424-A (GB)
Title: Improvements in or relating to show-cards
IPC: G09F5/04
Filed: 1925-09-21
Abstract: 258,424. Woodside, J. A. Sept. 21, 1925. Contents, facilitating access to; folding boxes. - One or more tubular containers 2 are arranged vertically on a showcard 1 so as to hold a pile of small articles an opening 4 being provided at the lower end of each container to allow of removal of the articles one at a time. The containers are preferably in the form of collapsable cartons closed at the top and bottom by three flaps 5, 6, 7 and 8, 9, 10 one of the bottom flaps being of a length to allow it to embrace the others and form a spring on which the pile of articles rests.
Patent GB-577559-A (GB)
Title: Crankless two-stroke internal-combustion engines
IPC: F01B3/00
Filed: 1944-11-24
Abstract: 577,559. Crankless two-stroke engines. LEWICKI, W. Nov. 24, 1944, No. 23482. [Class 7 (ii)] In a crankless two-stroke internal combustion engine, particularly applicable to air craft, the power-receiving element such as a propeller has an intermittent drive which is operative only during the compression strokes which are effected by the expansion of air or gas which is compressed by the piston on its expansion (firing) strokes during which the piston is mechanically free. In one form, Fig. 1, a cylinder 10 contains opposed pistons 11 enclosing a combustion space 12 each piston being associated with a pair of contra-rotating propellers 17, 18 at each end of the engine. The 'cylinder has inlet ports 132 at one end and exhaust port 142 at the other, the ports being divided by partitions 131, 141 respectively. The cylinder wall has a thickened central portion and is tapered towards its extremities. Each piston has an extension 111 terminating in a ring 112 which has internal and external threads of opposite hand coacting with inner and outer oscillating sleeves 15, 16. The sle'eves have a limited axial movement and are provided with cone clutch portions 151, 161, coacting with complementary clutch portions on air screws 17, 18, the clutches being engaged only on the inner strokes of the sleeves 111 so that the air screws are driven in opposite directions by intermittent impulses imparted during the compression, strokes of each piston. Spaces 19 at the ends of the cylinder serve to cushion the pistons at the ends of the outward stroke and also to supply air through one-way valves 23, to maintain pressure in the main pneumatic accumulator 20 by replacing leakage. Fuel may be supplied by low pressure injection into the ports 13 produced by the pressure in the spaces 19. Or continuous injection may be effected into spaces 24 enclosed by an air scoop 25 to produce a mixture which passes into the ports 13 through automatic valves 26, ignition being effected automatically by the pressure rise in the combustion space 12. To assist scavenging free turbine blades 29 may be mounted on rotors 30 adjacent the exhaust ports 14. If different resistances are encountered by the two air screws of a pair. one screw will be driven faster than the other and the corresponding piston 11 will be rotated. The pitch angle of the air screws may be controlled by causing peak pressure in the combustion chamber to operate a pressure sensitive device arranged to increase the pitch angle and thus decrease engine speed when a predetermined pressure is exceeded and also to decrease the pitch angle if the peak pressure falls. In Fig. 2, the curves C, E, represent the combustion chamber pressure for the compression and expansion strokes respectively, the rise to the point j being due to the cushion. Line f, g represents the pressure on the back of the piston exerted by the pneumatic accumulator. Curves V1 and V2 represent piston speeds.
Patent GB-403473-A (GB)
Title: Improvements in and relating to liquid fuel burning plant for boiler furnaces and the like
IPC: F23N1/00
Filed: 1932-08-23
Abstract: 403,473. Regulating fuel and air supply to furnaces. McKEAN, J. G., Westerhill, Mount Vernon, Lanarkshire, and JONES, R. F., 238, Auldhouse Road, Newlands, Glasgow. Aug. 23, 1932, No. 23561. [Class 51 (i).] In liquid-fuel burning plant for furnaces .in which an air admission valve and a fuel valve are controlled automatically by the pressure of the liquid fuel from the discharge side of the fuel supply pump, the air and fuel valves are mechanically independent and the air admission valve is provided with a load which is less than and entirely independent of the load on the fuel valve. In one form, Fig. 1, the spindle 7 of the air valve 8 located in a conduit 9, extends through the wall of the conduit and carries a pinion 6 meshing with a rack 5 on a rod 1 carrying pistons 2 and 3 operating in a cylinder 4. The piston 3 is loaded by a spring 10 while the piston 2 is subjected to the pressure of the liquid fuel, the discharge side of the fuel supply pump being connected by an inlet 16 with a chamber 15 bounded at the sides by a collapsable wall 14. In a modified form, Fig. 2, the cylinder is provided with a separate compartment 22, 22<1> for the piston 2, one side of the piston being'connected at 16 to the pump discharge and the other side at 23 to the suction side of the pump to allow for the return of any fuel which passes the piston. In further modifications, the two pistons 2 and 3 operate in separate spaced cylinders and the air valve may be in the form of an annular or circular hit-and-miss valve connected to the rod 1 by a pin and slot device. Where the fuel is drawn from a tank 31, Fig. 5, having a non-return valve 32, a bellows 34 is provided in the line 29 leading to the air valve controlling cylinder to accommodate the oil displaced by the piston 2 on the closing of the air valve.
Patent GB-499673-A (GB)
Title: Improvements in or relating to seats
IPC: B60N2/24
Filed: 1937-08-27
Abstract: 499,673. Seat frames. BUNN, C. W. Aug. 27, 1937, No. 23579. [Class 52 (ii)] A side support or pedestal for seats, particularly vehicle seats, comprises a frame 5 of pressed sheet or strip metal and a covering 6 of sheet metal over the frame 5, the latter being formed with a foot portion, a seatsupporting portion, and a portion 7 for the attachment of a seat back. Bracing strips 14 may be provided. The covering sheet 6 has a flanged edge 15 fitting over and secured to the frame 5, and may be pressed or corrugated to form an ornamental pattern and to stiffen it.
Patent GB-813706-A (GB)
Title: Improvements in and relating to mining machines
Inventor: PEAKE CECIL VOWE
IPC: E21D9/10
Filed: 1956-08-01
Abstract: 813,706. Mineral-mining machines; tunnelling machines. COAL INDUSTRY (PATENTS) Ltd. July 26, 1957 [Aug. 1, 1956], No. 23733/56. Classes 68(1) and 85 A machine for ripping the face at a road head in a mine consists of driven cutter drums or discs 11 mounted along an arm 10 of a length equal to or greater than half the width of the face being ripped and swingable about a horizontal axis in a plane parallel to the face to be ripped. The drums may have driving motors situated therein or may as with the discs be driven from a motor 22 and gearing extending through the arm 10. The outer end of the arm is guided by an arch 12 on which is supported a cable system for swinging the arm. Conveyers 20, 21 remove mined mineral.
Patent GB-1347427-A (GB)
Title: Decalcomania
IPC: B44C1/175
Filed: 1972-05-19
Abstract: 1347427 Transfers COMMERCIAL DECAL Inc 19 May 1972 [21 May 1971] 23738/72 Heading B6C A typical slide-off decalcomania suitable for firing on an object bearing a high melting point plastic such as polyamide or a polyacrylic coating comprises a temporary paper support 10, Fig. 1, a water soluble layer 8, an opaque backing layer 6, a design layer 4 and a lacquer layer 2 containing an epoxy resin and a minor but cross-linking proportion for melamine resin. A heat release decalcomania for the same purpose comprises a paper support 20, Fig. 2, a low melting point release material 18, a lacquer layer 16 containing the epoxymelamine mixture, a design layer 14 and an opaque layer 12. The opaque layer may contain titanium dioxide, whilst the epoxy resin may be a linear polyhydroxy epoxy polymer. The cross-linking resin may be either alkylated melamine-formaldehyde resin or methoxy methyl melamine resin.
Patent GB-1531122-A (GB)
Title: Valve plate having suction gas flow path
IPC: F04B39/10
Filed: 1977-06-03
Abstract: 1531122 Valves TRANE CO 3 June 1977 23773/77 Heading F2V In a valve plate for a reciprocating compressor suction gas flow paths are defined between the corrugations of a member 24 secured between upper and lower plates 21, 22 which are separated by a central member 23 and have suction ports 25 and discharge ports 18 formed therein. The corrugated member is cut away at 26 so as not to restrict the suction ports 25 Valve members 7, 9 co-operating with stop plates 6, 11 respectively control flow through the ports 25, 18. The member 23 may be integral with the upper or lower plate which may be annular. The central member may have a central discharge port which co-operates with a crown on the piston to reduce clearance volume. The valve plate components are secured by brazing.
Patent GB-797476-A (GB)
Title: Amides of trialkoxybenzoic acids
Filed: 1956-08-01
Abstract: The invention comprises compounds of the formula <FORM:0797476/IV (b)/1> (wherein R is alkyl of 1 to 4 carbon atoms, R1 is hydrogen, alkyl of 1 to 4 carbon atoms, benzyl or phenethyl, A is an alkylene radical of 2 to 6 carbon atoms or a phenylene radical which may be substituted by halogen atoms or nitro groups and B is dialkylamino, dicycloalkylamino, diaralkylamino, alkylaralkylamino or a saturated, heterocyclic nitrogen containing ring system which may be alkyl substituted and which is connected to A through a heterocyclic nitrogen atom) and acid-addition salts thereof; and their preparation by reacting a halide, ester or azide of the appropriate trialkoxy-benzoic acid with a compound R1-NH-A-B.  They may also be prepared by metallation, e.g. with sodium or lithium amide, of the amide of a trialkoxy-benzoic acid and reaction of the metallated amide with the appropriate tertiary aminoalkyl halide or amino phenyl halide. In examples, the following compounds are prepared by reaction of 3 : 4 : 5-trimethoxy-benzoyl chloride with the appropriate primary or secondary amine: N-(b -morpholinoethyl)-, N-methyl - N - (b  - morpholinoethyl)-, N - (5 - di - ethylamino - 2 - pentyl)-, N - benzyl - N - (b -morpholinoethyl)-, N - (g  - morpholinopropyl)-, N - (b  - piperidimoethyl)-, N - (5 - di - n - propylamino - 1 - pentyl)-, N - ethyl - N - (6 - di - n - hexylamino - 1 - hexyl)-, N - [b  - (2 - methylpiperidino) - ethyl]-, N - (b  - 1 - pyrrolidinyl)-, N - (n - butyl) - N - (b  - 1 - pyrrolidinyl)-, N-[4-(N1 - methyl - 1 - piperazinyl) - butyl]-, N-[b -(2 : 6 - dimethylmorpholino) - ethyl]-, N - (b -di-n - hexylaminoethyl)-, N - (b  - benzylmethylaminoethyl)-, N - (p - dimethylaminophenyl)-, N - methyl - N - (p - morpholinophenyl)-, N-benzyl - N - (p - piperidinophenyl)-, N - phen - ethyl - N - [p - (a  - pipecolinophenyl)]- N-(3 : 5-dichloro - 4 - dimethylamino - phenyl)-, N-(3 : 5-dinitro - 4 - dimethylamino - phenyl)-, N-(3-chloro - 4 - dimethylamino - phenyl)-, N-(3-nitro - 4 - dimethylamino - phenyl)-, N - (p-morpholinophenyl)- and N-benzyl-N-(p-dimethylaminophenyl) - 3 : 4 : 5 - trimethoxybenzamides, and the corresponding triethoxy- and tri-n-hexyloxy compounds corresponding to the first 15 compounds in the above list.  Acid-addition salts of some of the products are described and a list of further salt-forming acids including inorganic acids, organic carboxylic acids, ascorbic acid and 8-chlorotheophylline is given.  Starting materials.  3 : 4 : 5-Triethoxy- and -tri-n-hexyloxy benzoyl chlorides are prepared from thionyl chloride and the parent acids which in turn are prepared by alkylation of gallic acid, e.g. with ethyl bromide in sodium hydroxide, followed, if necessary, by saponification of any ester formed. N-(p-aminophenyl)-morpholine is prepared by catalytic hydrogenation of N-(p-nitrosophenyl)-morpholine.
Patent GB-890266-A (GB)
Title: Vacuum-sealing means between substantially coaxially aligned pipe ends rotatable with respect to each other
IPC: F16J15/36
Filed: 1960-07-08
Abstract: 890,266. Pipe joints. ALLMANNA SVENSKA ELEKTRISKA A.B. July 8, 1960 [July 10, 1959], No. 23883/60. Class 99(1). A sealing means between a pipe 2 rotatable with respect to a pipe 9 comprises an extension tube 6 carried by the pipe 2 and supporting a fluid-tight bearing sleeve 11 which is connected to the pipe 9 by a sealing bellows 18 permitting axial misalignment of the pipes. The sleeve 11 carries bearing rings 12, 13, and packing means 14 and the cylindrical ends of the bellows 18 are secured to members 17 on the sleeve 11 and flanged end 10 of the pipe 9. The bellows 18 may be of rubber or steel sheet and may be protected from heat within the pipes by overlapping extensions 19. The pipe 2 is rotatably supported in a bearing 5.
Patent GB-621671-A (GB)
Title: Improvements in cabin pressure control systems for aircraft
IPC: B64D13/04
Filed: 1944-11-30
Abstract: 621,671. Fluid-pressure servomotor-control systems. CLEVELAND, F. J. (Boeing Aircraft Co.). Nov. 30, 1944, No. 23973. [Class 135] In pressure control mechanism for aircraft pressure cabins, means supplying air under pressure to the cabin are controlled in accordance with the difference between cabin pressure factor and the ambient atmospheric pressure, whilst means controlling the rate of outflow from the cabin are controlled in accordance with the air flow either into or out of the cabin. The pressure and flow controls are thus reversed compared with those in Specification 621,670. As shown, a valve 2 controls the outlet 92 from a cabin 9 to which air is admitted by a port 91 supplied by a supercharger 1 driven from the aircraft engine 90 through a fluid drive 12 and gearing 13. Fluid is supplied to the coupling 12 by a pump 16 through a pipe 15 controlled by a valve 4. The valve 2 is actuated by a piston 23. Cabin pressure admitted to the upper side of the piston through a hollow stem 22 bleeds through to the lower side of the piston and thence to atmosphere by a duct 24. The base of the hollow stem is more or less obturated by a stem 33 on a spring-loaded piston 3. The latter is connected by pipes 31, 32 with the outlet 92, the pipe 32 being connected to a small venturi 21 within a larger venturi 93. The valve 2 follows up the movements of the stem 33 and thus tends to close with an increased flow and to open with a decreased flow. The valve 4 is simultaneously operated in accordance with absolute cabin pressure to let more or less fluid into the coupling 12 to increase or decrease the blower speed. The valve 4 is actuated by a servo-piston 40 under the control of a pilot valve 41 which is connected through its follow-up linkage with an absolute pressure control device 5 comprising a movable head 54 arranged between an evacuated bellows 51 with a fixed head 55 and a bellows 52 also with a fixed head 53, the bellows 52 being exposed to cabin pressure through a pipe 59. Cabin pressure acts against an adjustable tension spring 58. The absolute pressure control device 5 maintains the cabin pressure at a constant absolute value until the differential of cabin pressure over external atmospheric pressure exceeds a given value whereupon the differential pressure control 6 takes over to prevent the given value being exceeded. The differential pressure control 6 comprises a spring-loaded piston 61 exposed to cabin pressure through a pipe 63 and to atmospheric pressure through a pipe 64 and acting at a shoulder 60 of a rod 65 to move the absolute pressure control 5 bodily on guides 57, thus also moving the pilot valve 41. Specifications 521,623 and 554,417 also are referred to.