baber/WOPTO huggingface dataset:
Patent GB-1007248-A (GB)
Title: Cracking of hydrocarbons
IPC: C10G11/18
Filed: 1963-04-18
Abstract: Hydrocarbons are catalytically cracked by flowing upwardly through an elongated, vertical reaction zone with suspended catalyst, separating catalyst and passing through sealing means, to prevent backflow into the reactor, into a stripping zone, passing stripped catalyst in dense fluidized form from the bottom of the stripper into the bottom of a regenerator and thence from the lower portion of the regenerator into the cracking zone. Hydrocarbon feed enters transfer line reactor 10 by line 88 joining catalyst such as silica-alumina entering from the regenerator 12 by line 74 controlled by a manually operated valve. Contact between catalyst and hydrocarbon is improved by the constrictions 95.  Catalyst is separated in cylone 104 having a dip-leg ending just inside stripper 26.  The bottom of the dip-leg has a sealing means such as a trickle or flapper valve 108 which opens only when the level of catalyst 112 rises above a predetermined level.  Dip-legs of cyclones 118 and 128 empty into dip-leg 106 above the stripper and below the catalyst level. Catalyst is stripped with steam from line 146 and the gases pass by line 148 to the entrance to cyclone 128.  Catalyst passes to regenerator 12 by line 152 and is there oxidized with air before returning to the reactor.  The <PICT:1007248/C4-C5/1> flow of flue gases from the regenerator by line 59 is controlled by valve 58 automatically controlled by the pressure difference between the end of the reactor and the top of the regenerator.
Patent GB-1399405-A (GB)
Title: Preparation of terephthalic acid diamide
IPC: C07C231/00
Filed: 1973-03-30
Abstract: 1399405 Preparation of terephthalic acid diamide AKZO NV 30 March 1973 [1 April 1972] 15438/73 Heading C2C The invention comprises a process for the preparation of terephthalic acid diamide in which a polymeric polyester based on terephthalic acid is reacted with ammonia which contains not more than 15% by weight of water. The reaction is preferably carried out at a temperature of 70‹ to 250‹ C. and at ammonia pressures of 10 to 100 atmospheres. The ammonia may be used in stoichiometric quantities but it is preferable to use an excess of ammonia up to 35 mols per mol of polyester unit.
Patent GB-529654-A (GB)
Title: Method of and device for preparing the sealing of paste tubes and the like
IPC: B65B7/14
Filed: 1939-05-24
Abstract: 529,654. Closing collapsable tubes. AKTIEBOLAGET G. AREHNS MEKANISKA VERKSTAD. May 24, 1939, No. 15439. Convention date, May 25, 1938. [Class 94 (i)] In apparatus for closing the ends of collapsable tubes for paste, the tube is formed into an oval or other non-circular cross-section having a definite position, with relation to a print or label on it, and is retained in this position for presenting to a device for sealing the tube by flattening one end. An endless chain 1 with pockets 2 carries the tube 10 beneath an adjusting member 4 having a spring head 7 grooved at 8 to engage an interior abutment in the tube. An elevator 6 raises the tube into engagement, and the member 4 is rotated by a rack and pinion 15, 14 to bring the abutment and print into the required position. The tube is drawn downwardly by a hook 31 engaging the screw cap, and, at the next position of rest, an elevator raises it into embracing relationship with an oval mandrel 9, Figs. 1 and 5. The tube is stripped off into the pocket, which is provided with recesses, 35 which keep it in the correct angular position. Filling takes place from a device 29 and tongs 5 effect the closing, which takes place along the major axis of the crosssection. The closing cap 32 may be screwed tight by the action of the adjusting device 4 and frictional holding devices on the elevator 6. In a modification, the mandrel may be rotatable and the elevating piston may hold the cap during screwing up, the continued rotation of the mandrel may deform the tube until it stops in the correct position. Specification 431,302 is referred to.
Patent GB-614942-A (GB)
Title: Improvements in or relating to methods of and means for producing modulating sequels for television transmitters
IPC: H04N17/00
Filed: 1946-05-22
Abstract: 614,942. Television. RADIO-INDUSTRIE SOC. ANON. May 22, 1946, No. 15500. Convention date, May 23, 1945. [Class 40 (iii)] In an arrangement for inserting synchronizing pulses into a television signal, means are provided for ensuring stability of the datum level portions (i.e. pedestals) to which the synchronizing pulses are added. A television signal V, Figs. 1 and 7, having a maximum level B131 representing white and a black level NN<1> is interrupted at a, b for insertion of synchronizing signals, such as pulse S (Fig. 3). To ensure stability of the level a, b at which these pulses are inserted, i.e. the black level NN<1> representing a modulation depth of approximately 30 per cent of the full modulation BB<1>, a locally generated auxiliary pulse series S1 having a repetition rate equal to that of the synchronizing signals to be inserted and an amplitude at least as great as maximum white, is inserted in the gap a, b giving a resultant such as the signal shown in Fig. 5. This signal is then fed to a limiter valve E, Fig. 8, which produces an output waveform V, Fig. 6, in which the stability of levels a, b and a1, b1, defining the pulse S<1>1, Figs. 6 and 8, is determined by the operational characteristic of the limiter E. 'An additional pulse series S<2>1 (pulse series S1 reversed in phase) is then applied to the limiter output to effect cancellation of the pulse S<1>1 and thus to produce a gap having a stable level a, b on which is superimposed the desired synchronizing pulse S1, Fig. 3.
Patent GB-624206-A (GB)
Title: Improvements in or relating to guards for platen presses or like machines
IPC: F16P3/00
Filed: 1947-06-12
Abstract: 624,206. Machinery guards. RANDALL, J. W., and DICKINSON & CO., Ltd., J. June 12, 1947, No. 15510. [Class 80 (iv)] A guard for the platens 2, 3 of a platen press or the like adapted to move down into guarding position with the movable platen 3, and in descending to sweep outwards, is actuated by means which are automatically adjusted relative to the moving platen by contact therewith when the platen is reset. As shown, the guard comprises a rubber blade 13 carried by side arms 18 pivoted on cranks 19 on a shaft 10, extensions 181 of the arms 18 having pin- and-slot engagements 20, 12 with members 8 movable with the platen 3 and freely carrying the shaft 10. A gear wheel 21 is mounted on the shaft 10 and is engaged by a pinion 22 mounted on one of the brackets 8 and meshing with a rack 23, frictionally mounted on a fixed bar 24 by spring means (not shown). As the platen 3 descends, the guard is swung out about a descending longitudinal axis. If the platen 3 is reset at a different height, a lug 31 thereon engages a stop 30 on the rack 23, and automatically moves it along the fixed bar 24, so that the guard will operate over a new guarding range. In a modification the guard is directly mounted on a crank on the shaft 10.
Patent GB-1136717-A (GB)
Title: Magnetic core memory equipped with a safety circuit
IPC: G06F11/00
Filed: 1966-04-07
Abstract: 1,136,717. Data protection arrangement. INTERNATIONAL STANDARD ELECTRIC CORP. 7 April, 1966 [15 April, 1965], No. 15568/66. Heading G4C. [Also in Division H3] In a magnetic core memory with destructive read-out and restoring means for rewriting the contents of an address immediately after read-out and having a safety device for blocking operation of the memory when supply voltages vary beyond predetermined upper and lower limits, integrity of stored data is ensured in that said blocking can only occur in the time interval between a re-write time slot and the next succeeding read time slot. In the system described (Fig. 1) safety circuits SC interposed between a memory MR and its sources of stabilized voltages 11A, 11B and 11C supplied from non-regulated source U comprise in each supply line 2A, 2B and 2C a detection circuit 12A, 12B or 12C. Each circuit 12 consists of a double threshold amplitude discriminator 15 and a delay circuit 16. On detection by one of the discriminators 15 of a voltage outside said two threshold values, an alarm signal S is passed by way of a line 3 and an OR- gate 17 to one input of an AND-gate 18. The other input of this AND-gate receives clock pulses P which occur in the intervals between the time slots for rewriting at one address and reading at another address. The output 5 of AND-gate 18 sets bi-stable device 14 which then issues a blocking signal 7 to memory MR. The delay circuits 16 are included to allow for the fact that there may be a delay of almost one complete read-write cycle between the generation of the alarm signal S and the application of blocking signal 7 to the memory MR. After the alarm condition has ceased, AND gate 19 becomes enabled (20 being an inverter and 21 a delay device) whereby at the next pulse P the output 6 resets the bi-stable device 14 for unblocking memory MR. Details of a discriminator 12 (employing two Zener diodes, two NPN transistors and two ordinary diodes) and a delay circuit 16 (comprising a diode and a capacitor) are given with reference to Fig. 4 (not shown). Fig. 5 (not shown) illustrates a transistorized bi-stable circuit 14 with a transistorized circuit (50) coupled thereto for forcing the circuit 14 into its reset state for blocking of memory MR when starting the memory up initially.
Patent GB-313078-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F1/00
Filed: 1929-05-18
Abstract: 313,078. Iohmann, P. June 6, 1928, [Convention date]. Tobacco pipe stems enclose a split tube a, one part being flanged to form a seating for the edges of the other part. The end within the pipe-bowl is doubly bevelled. Wood, metal, meerschaum or galalith (Registered Trade Mark) may be used. According to the Specification as open to inspection under Sect. 91 (3) (a) cigar and cigarette holders may be provided with a split tube, the parts being tongued and grooved or hinged together. This subject-matter does not appear in the Specification as accepted.
Patent GB-1464217-A (GB)
Title: Process for producing austenitic ferrous alloys
IPC: C22C38/38
Filed: 1975-04-16
Abstract: 1464217 Making ferrous alloys: nitriding ALLEGHENY LUDLUM INDUSTRIES Inc 16 April 1975 [12 June 1974] 15618/75 Headings C7A, C7D and C7U A ferrous alloy containing by weight: is austenitized at least in its surface region by exposing it in the solid state to nitrogen in elemental or compound form at < 1700F for a time sufficient to produce a nitrogen content of 0À85-3%. That range of nitrogen may be confined to the surface region, so that the alloy body has an austenitic surface and a core region containing both austentite and ferrite. The nitriding operation may include a diffusion anneal in argon after austenilization of the surface region possibly followed by a further nitriding treatment to produce a high nitrogen content in the surface region. Where it is not possible to enclose the body in a treatment furnace the nitriding may be effected by application of a flame including nitrogen, e.g. one produced using insufficient air for complete combustion.
Patent GB-229175-A (GB)
Title: Improvements in and relating to automobile lighting systems
IPC: B60Q1/24
Filed: 1924-06-30
Abstract: 229,175. Earnshaw, H. P. J. June 30, 1924. Lighting, systems of. - In a motor car having the usual front and rear fenders and the usual front headlights 2, Fig. 1, a projector lamp 3 is mounted, preferably adjustably, on the rear fender 4 on the side nearest the edge of the road so as to throw a beam of light from behind the driver and across the front fender, thereby producing a brightly illuminated area in front of and directly outside the line of travel of the car, the lamp being arranged relatively to the car body in such a manner that no direct rays from the lamp are visible to a person directly in front of the car. The lamp employed is preferably one adapted to throw a strong light beam of little divergence for illuminating an area 20 and a secondary beam of greater divergence. Specifications 116,883, 201,436 and 217,374 are referred to.
Patent GB-380065-A (GB)
Title: Improvements in or relating to the production of stable emulsions
IPC: C09K23/00
Filed: 1931-06-01
Abstract: Stable emulsions of fats, oils, paraffin wax, and the like, having positively charged particles, are produced by the use of an aqueous mixture of a protective colloid and an aluminium salt. Example: 100 parts of aluminium acetate are added to a solution of 80 parts of gelatine in 700 parts of water and the mixture maintained for some time at 60 DEG  C. and subsequently employed to emulsify a mixture of 125 parts of petroleum jelly and 125 parts of paraffin; the product is a stable plastic emulsion dilutable to any degree without separation.  Specification 380,076 is referred to.
Patent GB-516429-A (GB)
Title: Improvements in or relating to electro-magnetic relays
IPC: H04B1/16
Filed: 1938-05-26
Abstract: 516,429. Electromagnetic relays. JACKSON, H. May 26, 1938, No. 15684. [Class 38 (v)] In a relay system suitable for connecting a radio receiver to A.C. mains 4 when any one of a number switches 9 situated at loud speakers is operated, the switches 9 are adapted to impose or remove a short-circuit from a rectifier 5 which is connected across a winding 2 of a relay, and the winding 2 acts as the secondary of a transformer the primary 1 of which is continuously energized by the A.C. supply 4. In the form shown the rectifier 5 is normally short-circuited and the winding 1 is unable to operate the relay. Opening of a switch 9 causes direct current to pass through winding 2 and the relay operates to close contacts 3 and connect up the receiver. In a modification the switches 9 are in parallel instead of in series.
Patent GB-736376-A (GB)
Title: Improvements in or relating to discriminator circuits
IPC: H03D3/08
Filed: 1953-06-09
Abstract: 736,376. Automatic control systems.- TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. June 9, 1953 [June 10, 1952] No. 15806/53. Class 38 (4). [Also in Group XL (c)] A discriminator circuit, for detecting frequency modulation or variation in an applied oscillation, comprises a series-tuned inductance-capacity circuit, the inductance being shunted by a capacitance to resonate at a higher frequency, and a pair of rectifiers fed from separated' points of the circuit so chosen that amplitude variations of opposite sense are produced by any variation of input frequency, the rectified outputs being combined in opposition to provide a voltage representing the frequency variations. A piezo-electric crystal operating in series resonance may be connected across the inductance coil of the series-tuned circuit. The detected output may be used for automatic correction of the frequency of an oscillator. If the oscillator is part of a F.M. transmitter, the retro-active voltage may supply negative feed-back for linearizing the modulation. In a F.M. receiver, Fig. 3, the modulated I.F. wave is amplified in a valve 1 with tuned anode circuit 2, 3 and is applied at terminal a to a series-tuned circuit comprising capacities 4, 6, preferably equal, separated by a coil 5. The terminals b, c of the coil 5, which may be shunted by a condenser 7 and crystal 12, are connected through rectifiers 8, 9 to load resistors 10, 11 across which the detected output is taken at d. The full-line curve A, Fig. 2, shows the voltage at a plotted against frequency deviations of from a mean frequency f, m; and the curves B, C, the corresponding voltages at band c respectively. The full curve D shows the output voltage at d. The provision of a piezocrystal 12 alters the shape of the curves as indicated by the dotted lines, to produce a steeper slope in the vicinity of the mean frequency f, m. Fig. 4 shows the discriminator applied to the automatic frequency control of an oscilllator comprising a tube 13 in back-coupling relation to a tuned circuit 15. The oscillator feeds the series-tuned circuit 4, 5, 6 and the rectified output voltage at d is fed through smoothing networks 19 ... 22 to the grid of a valve reactance 17 connected across the tuned circuit 15. Signals may be applied at terminal 18 to modulate the oscillator frequency, and if desired, the network 19 ... 22 may be designed to pass some or all of the frequency components of the detected signals, so as to linearize the modulation by negative feed-back. The crystal 12 in addition to its retro-active control of the oscillatory frequency, also exercises a direct control due to its coupling through the condensers 4, 6 to the tuned circuit 15. The detecting circuits 8, 9, 10, 11 may be replaced by a circuit of the ratio type.
Patent GB-665398-A (GB)
Title: Improvements in or relating to pulverising apparatus
IPC: B02C17/06
Filed: 1949-06-14
Abstract: 665,398. Ball mills. CAMPBELL, J. G. June 14, 1949, No. 15817/49. Class 59 A ball mill with means for feeding it with powder and air or other gas flow in such a manner that particles in the mill of less than a particular particle size are blown out of the mill leaving the larger particles behind for further pulverizing treatment, is characterized in that the powde and air or gas flow is fed into the mill through a long gradually diverging conical tube. As shown, air from the pump 1 and drying tower 2 passes, together with powder fed intermittently from the hopper 8, through the venturi tube 7 and rotating conical tube 12 to the ball mill 13 from which an air suspension of particles passes to the mill 15 through the conical tube 14 which forms an extension of the tube 12. Similarly a tube 16 forming an extension of the tube 14 passes an air suspension mill 17. Finally the tube 18 passes the suspension to a collecting box 19 from which the air, after depositing the ground material in a bag 23 flows back to the pump via the pipe 20. Box 19 may be replaced by a box of the kind described in Specification 659,531.
Patent GB-770275-A (GB)
Title: Improvements in the construction of jugs
Inventor: HASSID MAURICE ALBERT
IPC: A47J41/00
Filed: 1954-06-09
Abstract: 770,275. Cold and heat retaining vessels. BRITISH VACUUM FLASK CO., Ltd., and HASSID, M. A. June 9, 1954 [June 9, 1953], No. 15838/53. Class 64(2) [Also in Group XVII] Inner and outer containers, e.g. of a plastic material, the outer container 1 being shaped to define a pouring spout 3 and the inner container 4 also defining a spout, are joined at their rims with an air space between, to form an insulated jug. A hole 7 in the outer container is for the introduction of silvering solution. A hollow lid is formed in similar manner and has a skirt with an opening 16 which can be made to register with the jug spout, for pouring, by rotation of. the lid. The top 9 of the lid and at least part of the outer container 1 may be transparent. The rim of the inner container of the jug rests on that of the outer before joining. The top 9 of the lid is rabbeted to to the bottom 8 before joining and either may, be silvered.
Patent GB-529407-A (GB)
Title: Improvements relating to door and like fastenings
IPC: E05B65/00
Filed: 1939-05-30
Abstract: 529,407. Latches. TONKS, W. H., and SPARKS, W. May 30, 1939, No. 15846. [Class 44] A latch for cupboard &c. doors comprises a short sliding bolt c guided in a casing a and connected by link f to a pendular weight e mounted on the spindle g of an operating handle not shown. The casing a is sufficiently large to allow the weight e to be moved anticlockwise through approximately 180 degrees so that the fastening may be used at the right or left edge of a door. Projection of the bolt is limited by the weight abutting against one or other of two stops m. The weight is of sheet metal with upturned. tongues or flanges k at its free edge. The nose of the bolt is bevelled to engage the staple d automatically when the door is closed. The case may be provided with a stop limiting movement of the weight to 90 degrees.
Patent GB-708788-A (GB)
Title: Improvements relating to processes for reclaiming rubber from vulcanised rubber and for destroying textile material in vulcanised and unvulcanised rubber, more especially vulcanised and unvulcanised rubber scrap
IPC: C08J11/16
Filed: 1952-06-24
Abstract: A process for reclaiming vulcanized rubber, e.g. from vulcanized rubber scrap and for destroying textile material contained in vulcanized and unvulcanized rubber, more especially vulcanized and unvulcanized rubber scrap, the vulcanized rubber for reclaiming or the vulcanized or unvulcanized rubber for destruction of its textile material is treated at a temperature ranging from 170 DEG  to 240 DEG C. and at a corresponding pressure in an autoclave with an aqueous solution of alkali of such low alkali concentration, e.g. 0.2 to 0.5 per cent. that at the end of the treatment the reaction of the solution is neutral or only slightly acid.  Plasticizing agents, oil and any other of the products usually employed in alkali rubber reclaiming processes may also be used.  In an Example 500 kg. of ground tyre rubber scrap are treated with 1000 kg. of a 0.3 per cent. aqueous solution of sodium hydroxide in an autoclave at a temperature ranging from 170 DEG  to 240 DEG C. under a pressure maintained in correspondence with the temperature, for a time which may vary in approximately inverse ratio to the temperature from 8 to 12 hours after which a reclaimed rubber of good chemical and physical characteristics is obtained the textile material being completely destroyed.
Patent GB-624229-A (GB)
Title: Improvements in or relating to ribbon feeding and change-over mechanism for use in sttistical or other machines
IPC: B41J33/516
Filed: 1947-06-17
Abstract: 624,229. Ink-ribbon mechanism. JOHNSON, W. E. June 17, 1947, No. 15940. [Class 100 (iv)] An ink ribbon reversing mechanism for a tabulating, typewriter or similar machine comprises ratchet-wheels 17, 18 attached to the ribbon spools, a feed pawl 19 having two teeth 31, one for engagement with each of the ratchetwheels and pivotally mounted on a spindle 20 fixed to a member 21 having a straight-line reciprocating movement, and a check pawl 32 pivoted about a fixed axis 26 and also having two teeth 33 disposed on opposite sides of the axis and alternatively engaging the ratchetwheels, the two pawls being connected by a U-shaped spring 35, the ends of which are located between the axes 20, 26 and lie on a line substantially normal to the median line of the spring whereby the spring retains the pawls in feeding and checking positions relatively to one spool ratchet at a time. The member 21 is guided for straight-line movement by a pin- and-slot arrangement and is reciprocated by a lever mechanism 27-30. When the unwinding spool is exhausted, a trip member 38 connected to the ribbon end is turned about a pivot 39 and engages an upturned flange 41 on a plate 42 which is thereupon slid leftwardly, Fig. 3, so that a projection 44 on the plate 42 is moved below the lower tooth 45 of a lever 46 secured to the spindle 20. The engagement of the projection 44 with the lever 46 turns the pawl 19 into engagement with the other ratchetwheel, and the spring connection 35 changes over the check pawl 32 to engage the ratchetwheel now advanced by the pawl 19.