baber/WOPTO huggingface dataset:
Patent GB-1426754-A (GB)
Title: Method and apparatus for generating gaseous mixtures for inflatable devices
IPC: B01J7/02
Filed: 1973-02-16
Abstract: 1426754 Generating combustion gases under pressure WALTER KIDDE & CO Inc 16 Feb 1973 [21 April 1972] 7750/73 Heading F1L An apparatus for producing a mixture of gases under pressure for inflating a device comprises a container 10 filled with e.g. liquid carbon dioxide under pressure and a chamber 19 filled with an ignitable propellent charge 21, the container and chamber being connected by a sealed passage 33 in communication, at its end connected to the container 10, with a sealed outlet conduit 62, 37 via an orifice 38, the outlet conduit 62, 37 having a passage 61 in direct communication with the container 10. The charge 21 is ignited by pulling a cable 32 to withdraw a plunger 26 against the action of a spring 28. At a predetermined compression of the spring 28, a striker portion 29 separates from the plunger 26 and is propelled by the spring against a percussively-detonated explosive cartridge 23. The cartridge thus ignites pellets 22 which in turn cause the propellent 21 to burn and pressurize the chamber 19. At a predetermined pressure a frangible disc 36 bursts to allow hot propellent gas to enter the container 10 through orifices 13 in a diffuser tube 12. Vaporization of the liquid carbon dioxide then occurs, pressure building up until sufficient to flow through the passage 61 and burst a further frangible disc 39 in the outlet conduit 62, 37. Thereafter propellent gas from the passage 33 flows through the orifice 38 and mixes with the mixture of carbon dioxide and propellent gas flowing from the container.10 through the passage 61 to the conduit 62, 37. The container 10 is provided with a pressure relieving frangible disc 46. In order to minimize heat loss the chamber 10 is provided with heat shields 51, 53 and a silicone rubber end filling 54.
Patent GB-915055-A (GB)
Title: Improvements in or relating to releasable connectors for adjustably securing a shankto a shaft
Inventor: LAUNDER ERNIE L
IPC: A01B35/22
Filed: 1959-03-05
Abstract: 915,055. Scarifier teeth. TOOTH & CO., H. & L. March 5, 1959, No. 7756/59. Class 107. [Also in Group XXV] A connector for adjustably securing a shank A carrying a replaceable tooth point B and used in earth handling vehicles, to a supporting shaft S comprises a U-shaped coupler C the limbs 31, 32 of which engageably receive therebetween the shaft S; the limb 32 has an opening 40 therein through which extends the shank A, the latter being resiliently secured in position by a pin D extending through the limb 31. The latter is bifurcated, providing cheeks 45 in which are openings 57 for receiving the pin D, the shank A being disposed between the cheeks 45. The shank A is rectangular in cross-section having a front 11 and a back 12 which are provided with a plurality of notches 17 and 16, respectively, for selectively engaging lugs 48 and 41 on the coupler C, the notches 16 being so spaced that one thereof is engaged by the pin D, which one depending upon which of the notches 16 is engaged by the lug 41. The notches 16 and the lug 41 are semi-circular to allow for pivotal movement of the coupler C thereabout to and from a position in which the lug 48 engages in the corresponding notch 17, the latter having a sloping seat 19 against which bears a shoulder 49 on the lug 48, the bearing surfaces of the seat 19 and the shoulder 49 being in planes which are substantially normal to a radius line extending from the centre of the lug 41 and the engaged notch 16. The pin D comprises two like semi-circular parallel parts 55 having interlayed therebetween resilient material 56 e.g. rubber, the end portions of the pin being larger than the remainder thereof for retaining the pin in position and the openings 57 have their front portions 61 enlarged to ensure clearance of the pin D. The tooth point B is provided with a housing 21 which receives an adaptor 15 on the shank A, the adaptor having in its opposite sides openings 27 into which the sides 25 of the housing 21 are depressed, e.g. by hammering. The shaft S may have a plurality of shanks A attached thereto and may be supported for swinging movement.
Patent GB-525112-A (GB)
Title: Improvements in or relating to roll film photographic cameras
IPC: G03B19/04
Filed: 1939-03-10
Abstract: 525,112. Photographic cameras. KODAK, Ltd. March 10, 1939, No. 7778. Convention date, March 11, 1938. [Class 98 (i)] In a roll-film camera having a sprocket driven by the film and connected through gearing to the shutter setting lever so as to tension the shutter during the advancing of the film, the gearing includes a mutilated gear having a lost motion connection with its driving shaft whereby at the conclusion of the shutter setting operation the mutilated gear is moved rapidly out of the path of the gear actuating the setting lever. The camera shown is of the kind wherein a perforated film is fed from a cassette 23, over a guide roller 24 and sprocket roller 25 on to a take-up spool 22, by operating a knob 13 which is connected to the spool releasably (through the usual ratchet to prevent unwinding) so that the film may be rewound by operating a knob 14. The spool 22 has an overrunning clutch mechanism, and is connected to the sprocket shaft 26 by gearing 27, 28, 29, Fig. 7, the gear 29 having a pin 30 which is held, after the sprockets have turned once to feed a picture-length of film, by a spring-controlled detent lever 32, which may be displaced by a press-button 15 bodily along its pivot axis 33 against spring action to release the pin 30 when a further length of film is to be fed. The detent is bevelled to permit rewinding without check by the pin 30. For setting the shutter as film is wound, the sprocket shaft 20 is coupled by bevel gearing 37 to a shaft 38 rotatable in a bearing in the front wall of the camera and carrying a mutilated pinion 42 co-operating with a segmental gear 46 on a ring 47 rotatable on the lens mounting 18 and carrying an arm 48 adapted to displace a lever 20 to set the shutter when the ring 47 is turned. Between the shaft 38 and the pinion 42 there is lost-motion provision, whereby when the shaft 38 begins to turn, the pinion 42 initially lags behind and at the same time stresses a spring 45. At the beginning of the film winding movement the end teeth 42a, 46a in the gears 42, 46 are in engagement, and as the film is wound, the gear 42 turns the ring 47 against the action of a spring 51 to cock the shutter-setting lever 20. The teeth on the gear 42 then leave those on the gear 46 ; the spring 45 causes the pinion 42 to turn slightly to recover the initial lag and so to remove its teeth quickly out of the return path of the teeth on the gear 46 ; and the spring 51 then restores the ring 47 to its initial position. During the remainder of the film-winding movement, the pinion 42 turns on to bring the tooth 42a again into engagement with the tooth 46a on the gear 46. Double exposures are prevented because the shutter cannot be set except by operating the film-winding knob 13.
Patent GB-729611-A (GB)
Title: Improvements in or relating to electron discharge devices
Inventor: BECK ARNOLD HUGH WILLIAM
IPC: H01J3/02
Filed: 1953-03-20
Abstract: 729,611. Electron-beam apparatus. STANDARD TELEPHONES & CABLES, Ltd. March 20, 1953, No. 7823/53. Class 39 (1). An electron gun for the production of a high current density beam which is to be magnetically focused as for Brillouin type flow, comprises a cathode 2, a focusing electrode 4 and a. ferromagnetic disc anode pole-piece 7 within a ferromagnetic sleeve 12. An inner sleeve 8, preferably of ferromagnetic material, has two portions of different internal diameter to provide a shoulder 9 for locating the cathode and focusing electrode. An annular washer 10 of insulating material such as mica seats against the shoulder 9 and against a flange 5 on the focusing electrode. In an electron discharge tube the electrode assembly is pressed against the annular end 13 of the sleeve 12 by the rods 18 secured between a lower flange 6 of the focusing electrode 4 and the terminal pins 17. The sleeve 12 forms part of the envelope, and is preferably of an iron-nickelcobalt alloy or of a 50: 50 nickel-iron alloy for sealing to glass portions 15, 19 of the envelope. The envelope may be entirely of metal. Specification 674,758 is referred to.
Patent GB-770656-A (GB)
Title: Improvements in or relating to contour milling machines
Inventor: SMITH ROGER HENRY
IPC: B23Q35/46
Filed: 1954-03-17
Abstract: 770,656. Copy-milling. BRIDGWATER MACHINE TOOL CO. March 17, 1955 [March 17, 1954], No. 7827/54. Class 83 (3). A copy-milling machine comprises a toolspindle on a head 20, Fig. 1, movable to-andfrom a driven work-table 14, and a follower 63 contacting an endless belt 65 in a housing 19 having a contoured edge to determine the outline of the work by moving the head 20. The head 20 is adjustable laterally by screws 145, 146 on a plate 87 which is angularly adjustable on a slide 22 adjustable vertically on a slide 16 moved radially of the rotary table 14 by hydraulic means 56. A second belt for controlling tilting movements of the cutter 21 is mounted in a housing 23. The table is rotated by a variable-speed motor through a bevel ring-gear on the table with which meshes a bevel-pinion which rotates a driving-roll for each of the belts. The endless plastic or metallic belt 65, Fig. 13, is driven through sprockets 71 or 71A and is steadied near the tracer 63 by rolls 73, 74. The belt may have recesses P to cut pockets in the work. The belt may be cut by following round a photographic loft-template with a tracer mounted in place of the cutter 21 to guide an air-driven router mounted in place of the tracer 63 and of the same diameter. The cutter-spindle 89A is rotated by a motor through a shaft 101 and gears 99, 100. The spindle carries a piston-head at its upper end by which it can be raised within a casing 85 to withdraw the cutter from the work. The lower end of the spindle rotates in a quill 92 carrying a block 135 which limits the lower position of the cutter according to the setting of a nut 128 on a screwed adjusting-rod 129. The plate 87 is rocked on guides 151, 153 by tapes connected to the ends of an hydraulic cylinder 157 controlled by an hydraulic valve 172 and a tracer contacting the belt in the housing 23. In a modified machine, the table is reciprocated by hydraulic means and the rolls are driven by a pinion engaging a rack on the bottom of the table. Specification 746,543 is referred to.
Patent GB-1209332-A (GB)
Title: Treatment of suspensions of fibres in liquids
Inventor: WIKDAHL NILS ANDERS LENNART
IPC: D21D5/26
Filed: 1968-02-16
Abstract: 1,209,332. Hydrocyclones. N. A. L. WIKDAHL. 16 Feb., 1968 [17 Feb., 1967], No. 7960/68. Heading B2P. [Also in Division D2] Gaseous and solid components are continuously removed from liquid suspensions of fibres, e.g. of cellulosic pulp, by pumping the suspension from a storage tank into a degasifier with a vacuum chamber in which the suspension is degassed by boiling it at reduced pressure, and then pumping the suspension to a centrifugal separator to remove solids, whilst keeping out air or other gases, and then dewatering the suspension. As shown, the suspension is fed through inlet 2 to vat 1, 'the liquid level 4 being kept constant by weir 3. Suspension is drawn off by pump 6 through line 5, and further fibre may be added at 7. It then passes through line 8 to vacuum degasifier 9, through lines 10 and 16 to pump 11, through line 12 to centrifugal separator 13, and through line 14 to dewatering apparatus 15. White water may be returned through line 17 to the inlet 2. Rejects from the separator 13 pass through line 18 and pump 19 to a second centrifugal separator 20, rejects from which leave the system at 22. Accepts from separator 20 are recycled through line 21 to line 5. The suction sides of the three pumps are connected through lines 23 and 16, so that all are at the same pressure, and are arranged so that liquid flows are in the directions shown. Screens may optionally be inserted at 24. Another embodiment (Fig. 2, not shown) differs in the following respects: there are two degasifiers (9a and 9b), and additional fibre is supplied to the inlet only of the former; the whole output of degasifier (9a), and part of that of 9b proceed to the primary centrifugal separator, part of the rest of the output from 9b being returned to the vat (1a), part through a line (26a) and combined with the output from the primary centrifugal separator and pumped to the dewatering apparatus (15a); and part through a line (23a) to a pump (19a) which combines it with the rejects from the primary centrifugal separator and feeds them to the secondary centrifugal separator; and accepts from the secondary centrifugal separator and sent directly to the pump 11a feeding the primary separator.
Patent GB-1192243-A (GB)
Title: Electronic Weighing System.
IPC: G01G3/147
Filed: 1967-05-09
Abstract: 1,192,243. A/D converters. RELIANCE ELECTRIC & ENG. CO. 9 May, 1967 [15 June, 1966], No. 7963/69. Divided out of 1,192,241. Heading G4H. In a weighing system including a feedback A/D converter, the reference voltage is derived from a staircase generator, at least some of the increments of reference voltage being used for tare weighing.
Patent GB-197477-A (GB)
Title: Improvements in and relating to windings of alternating current dynamo-electric machines
IPC: H02K3/14
Filed: 1922-03-18
Abstract: 197,477. British Thomson - Houston Co., Ltd., Taylor, H. W., and Hopkirk, K. R. March 18, 1922. Coils and conductors; equalizing currents in parallel-connected windings in alternating-current machines, auxiliary means for. - The subdivided conductors in any phase of a polyphase generator are provided with reactances in their several sections arranged in mutual inductance with reactance coils connected in another phase whereby the currents in the conductors of the former phase are equalized in respect of the influence of the currents in the latter. The four component sections 1 - - 4, Fig. 1, Which form a single conductor in one phase winding and which are provided with external reactances A, as described in Specification 185,195 for equalizing the effects of their own phase currents, are connected to reactance coils at B inductively coupled to a coil C in another phase conductor, shown in dotted lines, and having such number of turns so as to eliminate the tendency to unequal current distribution due to the action of the currents in the second phase. In the form shown in Fig. 2 all the coils for controlling the current distribution in the conductors of one phase, both in respect of its own currents and those of another phase, are mounted on a common core J. The coils D which correct for the currents of the selected phase are in series with other coils E in that phase inductively linked with coils D' of the second phase, these coils D' corresponding to the coils D of the selected phase. The components 1 - - 4 at their common terminal pass to a coil F on the common core having an equal and opposite magnetizing effect to that of the coils forming the group of reactances E.
Patent GB-512793-A (GB)
Title: Improvements in or relating to railway indicators
IPC: B61L25/04
Filed: 1938-03-15
Abstract: 512,793. Electric signalling systems. STANDARD TELEPHONES & CABLES, Ltd., TERVET, E. J., and WALSH, H. T. J. March 15, 1938, No. 8025. [Class 40 (i)] A remotely-controlled railway traffic indicator system comprises a plurality of register devices for registering train descriptions, platform numbers, &c. a number of band indicators, control circuits interconnecting the register devices and the position-controlling equipments of the band indicators whereby information stored in one or more register devices may be displayed on a corresponding number of band indicators, and transfer circuits controlling the register devices and band indicators whereby information stored in one register and displayed on one indicator can be automatically transferred to another register. The indicator is actuated by a track contact, and the endless display bands 34 each pass round spacing rollers 4 and over a contact roller 14. Four spring contacts 101, 102, 103, 104 bear against the band near its edges to complete circuits through the roller 14 intermittently by way of apertures arranged in four columns along the band. The band is driven by a pair of large wheels 5 on a shaft 3, teeth 9 on the wheels engaging perforations along the band edges. On the shaft 3 are four switch cams consisting of an insulating disc faced on each side with metal plates against each of which bears a pair of wipers 30 electrically connected to the contacts 101, 102, 103, 104. The band is advanced, by rotation of the wheels 5, 72 degrees at a time, and the wipers 30 thus have five locations for each pair, thus giving twenty combinations with the contacts 101... 104. The shaft 3 is rotated by a gear-wheel 25 normally warped out of engagement with a pinion on a power-driven shaft by the armature 21 of a magnet-clutch 20 in circuit with the roller 14. A group of 20 relays are controlled by the passage of a train over a track contact to cause the change of indication. In a modification the cams, cam-wipers, roller 14, and contacts 101...104 are replaced by an endless-screw cut on a cylinder mounted on the shaft 3. Specification 371,964 is referred to.
Patent GB-680035-A (GB)
Title: Improvements relating to the supporting of engines and other machinery
IPC: F16F15/027
Filed: 1950-03-31
Abstract: 680,035. Machinery beds. ANGLO-IRANIAN OIL CO., Ltd., STANSFIELD, R., and WITHERS, J. G. March 28, 1951 [March 31, 1950], No. 8083/50. Class 80 (iv). A mounting for an engine or other machine having out of balance moving parts comprises a reinforced concrete under-bed 10 resiliently supported in a trough 12 by ten pairs of beams 34 which pass through the concrete and are supported at their ends by flexible diaphragms closing the tops of compressed air cylinders 14. The flanged beams of each pair are spaced and at their ends are bolted to a plate 30, Fig. 5, carried by a bolt 26 centrally clamping a disc 23 to the flexible diaphragm 16. The diaphragm is clamped between a flange on the cylinder 14 and a ring 17, and interfitting annular channels and curved portions are provided at 22 and 32. A plate 36 connecting the beams of each pair has a hole facilitating access to the bolt 26 which lies between the beams. To achieve a stable threelegged effect, the twenty air cylinders are divided into three groups each group being supplied through a pilot valve 41 controlled by the height of the under-bed adjacent the particular group. Should, for example, the plate 30 shown in Fig. 5 be depressed due to a temporary increase in load, the valve 41 is operated by a rod 50 to increase the pressure in the corresponding group of cylinders. The pressure is similarly decreased should the load on the plate 30 be temporarily decreased. Each cylinder has a blowdown pipe 40. In addition to the pilot valves 41, separate valves and pressure gauges, not shown, are provided in the supply line to each cylinder. A platform 53 is provided around the under-bed, and the concrete base 58 and brick walls of the trough have an asphalt damp-proof course 59.
Patent GB-440181-A (GB)
Title: Improvements in or relating to the cracking and coking of distillable carbonaceous materials
IPC: C10B55/00
Filed: 1934-03-14
Abstract: In a process for cracking and coking liquid hydrocarbons and mixtures thereof with solid carbonaceous materials of the kind in which the hydrocarbons are progressively deposited in thin layers on the floor of a coking chamber in contact with a gaseous or fluid medium heated to a temperature sufficient to drive off the volatile constituents and reduce the residue to coke, the gaseous medium enters the chamber in a plurality of streams directed towards the floor and the gases with the vapours evolved are withdrawn in an opposing plurality of streams.  An oven comprising a metallic shell 1, insulated lining 6 and refractory floor 3 is supplied with hydrocarbons preferably preheated to 318 DEG  C., through an intake 9 and leader 10.  Hot gases heated to 480 DEG  C., enter through a series of nozzles 12 connected to a header 13 and the gases and vapours are withdrawn through an opposing series of ports 14 connected to a header 15.  The flow of the gases to and from the retort may be reversed by means of valves 23, 24, 26, 27. The oven may be heated externally by flues 16. Air may be admitted through the nozzles at the end of the process to burn residual vapours, and to burn part of the coke thus reducing its volatility to 3--5 per cent.  The coke may be further heated after the operation to cause <PICT:0440181/III/1> <PICT:0440181/III/2> <PICT:0440181/III/3> it to shrink and is withdrawn hot by a mechanical pushing device. The supply of hydrocarbons and heating gases is correlated to control the temperature of the oven.  The process may be carried out in conjunction with the usual cracking plant and condensates may be recycled from the distillates obtained as described in Specifications 421,408 and 422,899.
Patent GB-1138607-A (GB)
Title: Shroud seal for hydraulic turbines, pumps and like machines
Inventor: KOELLER PAUL
IPC: F03B11/00
Filed: 1965-02-25
Abstract: 1,138,607. Centrifugal pumps; hydraulic turbines. DOMINION ENG., WORKS Ltd. Feb. 23, 1966 [Feb. 25, 1965], No. 8170/65. Headings F1C and F1T In a hydraulic turbine, pump or pump-turbine in which fluid friction on the runner 14 is reduced by introducing a gas, such as air, through pipe 24 into an annular space 20 adjacent a shroud 17, a seal comprising an annular axial lip 37 extending from the shroud is provided at the radially outer portion of the space 20, the radially inner surface of the lip being formed so as to extend from the surface of the shroud and serving as a liquid-energizing surface within the space 20 for promoting toroidal circulation of sealing liquid and producing centrifugal separation between the liquid and gas adjacent the lip whereby a stable liquid-gas sealing interface is maintained in sealing relation with the space, and a portion 56 of the housing is provided adjacent the energizing surface with an annular surface which has radially within and axially overlaps the energizing surface so as to obstruct the flow of sealing liquid radially inwards from the seal. Similarly, an annular axial lip 38 is provided to form a seal for a aeration space 22 adjacent shroud 18, but a co-operating housing portion corresponding to the portion 56 is not provided since any water from the seal zone tends to drip off the housing and back into circulation with the sealing liquid. Leakage of air from the spaces 20, 22 towards the draft tube 15 is prevented by supplying water under pressure through pipes 33, 34 to annular seal spaces 26, 30 and to centrifugal separator flanges 29, 32. Further annular seal spaces 28, 31 are provided between the separator flanges 29, 32 and the spaces 20, 22.