baber/WOPTO huggingface dataset:
Patent GB-706338-A (GB)
Title: Improvements in or relating to hydraulic pitch control mechanism for propellers
IPC: B64C11/38
Filed: 1951-04-02
Abstract: 706,338. Variable-pitch propellers. DE HAVILLAND AIRCRAFT CO., Ltd., and MANLEY, D. J. April 2, 1951, No. 7612/51. Class 114 A hydraulically operated propeller unit is locked against reduction of pitch on failure of the hydraulic pressure in the supply lines. The piston valve 63 is acted upon by the spring 66 and by the pressure in the fine pitch line 15, this valve closing the line 16 on failure of pressure in line 15. Failure of pressure in line 15 causes the operating piston to " hang " on the line 15 and so close the piston valve similarly.
Patent GB-779134-A (GB)
Title: Improvements in or relating to nuclear reactors
Inventor: FENNING FREDERICK WILLIAM
IPC: G21C19/14
Filed: 1952-03-25
Abstract: 779,134. Containers for neutron-emitting material. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 25, 1952, No. 7614/52. Class 98(1) [Also in Group XL(a)] In a nuclear reactor comprising canned slugs of uranium in air-cooled channels within a cube of graphite, the channel containing a burst can is located by depending a dust-absorbent cord in the cooling air from each vertical row of channels and winding this cord past a recording detector of radiant activity in synchronism therewith. The graphite forms a 26 ft. cube and is arranged in blocks A, B, 1 pitch square and 4 pitches long, with V-based channels 6, where the pitch is 7“ inches, Figs. 3, 7. Fans 31 draw air through filters 28, duct 29, the reactor core, duct 30, heat exchanger H and a filter 33 to discharge up a stack 32. Thermal and biological shields 18, 3 of cast iron and barytes concrete surround the graphite. The uranium lattice occupies a cylinder within the cube of graphite, with three feet of ;graphite outside the cylinder, and within the cylinder each channel 6 contains .twenty aluminium-sheathed slugs of uranium. These slugs are inserted from the load face L and subsequently discharged from the unload face U, by removing plugs 12, 13 from the shields and using jointed aluminium rods to push the slugs along the channel. Slugs unloaded from the reactor are received in a shielded coffin, Fig. 23, in which ten tubes 61 of a magazine 60 receive the uranium slugs and two tubes 62 then receive lead plugs following the slugs. During this unloading a lead blanket surrounds the channel 6 from which the plug 12 has been removed and a tube is inserted to guide the slugs into the coffin. Tubes 9 and troughs 9a bridge the air space between graphite and shield at the unload and load faces respectively.
Patent GB-1027793-A (GB)
Title: Improvements relating to terminal boards
Inventor: WALSH NORMAN ALLEN
IPC: H01R4/14
Filed: 1962-02-27
Abstract: 1,027,793. Identification means. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 20, 1963 [Feb. 27, 1962], No. 7645/62. Heading B8F. [Also in Division H2] To indicate the first terminal on each strip of a terminal board (see Division H2) a grid is secured to the strips, the digits being formed by filling in parts of the grid with white wax.
Patent GB-548100-A (GB)
Title: Improvements relating to liquid-fuel injection systems for internal combustion engines
IPC: F02M63/00
Filed: 1941-06-17
Abstract: 548,100. Oil engines. C.A.V., Ltd., BROOK, K., and EVANS, F. M. June 17, 1941, No. 7655. [Class 7 (iii)] In a liquid-fuel injection system, one or more additional injection nozzles e are provided between the fuel pump c and the main nozzle b, and arranged to operate at a low pressure so as to inject fuel when the fuel pressure is insufficient to open the main nozzle at starting, a byepass valve automatically closing, so as to direct the fuel only to the main nozzle, when the pressure is sufficient to open the latter. In a modification, the additional nozzle injects fuel into the induction pipe. The additional nozzle is preferably valveless with a whirling chamber.
Patent GB-657872-A (GB)
Title: Improvements in and relating to electrodes for electrolytic processes
IPC: C25C7/02
Filed: 1949-03-21
Abstract: 657,872. Electrodes for electrolytic processes. ALKAN, M. L. March 21, 1949, No. 7659. Convention date, Nov. 19, 1948. [Class 41] [Also in Group XXII] Electrodes for electrolytic processes are made by an extrusion process and are provided with substantial teeth or projections f or recesses g on or in their external periphery. As shown in Fig. 1, an anode formed, by extrusion, from a block of zinc a is drilled and tapped to receive the screwed end of a hook c. In the arrangement shown in Fig. 5, an electrode is made in segments k of oval cross-section, which can be turned in various directions, the segments being loosely mounted on a rod n provided at the top with a hook o and at the bottom with a screwed end p, co-operating with a nut q and washer r to support the segments. In a further modification, the electrode is reversible with respect to a central rod formed with holes to receive a supporting pin and adapted to be connected at either end to a suspension hook. Specification 572,168 is referred to.
Patent GB-525110-A (GB)
Title: Improvements in or relating to a photographic film guide
IPC: G03B27/62
Filed: 1939-03-09
Abstract: 525,110. Film gates. ORD, P. R., and KODAK, Ltd. March 9, 1939, No. 7671. [Classes 97 (i) and 98 (i)] Means for holding a film in the gate of a projector, camera, or enlarger, comprise substantially-continuous longitudinally-extending guide rails or runners 7, 8, 9, 10 provided on a pair of supporting members 1, 2, the rails on one member being staggered in relation to those on the other and the edges of the rails being in parallel planes separated by the thickness of the film or slightly less. The film may be moved through the gate with low frictional resistance and is held flat. The figures show the film gate of a vertical enlarger for strips of 35 mm. film, there being at one side of the opening 3 two rails 7 with a single rail 9 opposite the gap between them, and at the other side single relatively staggered rails 8, 10. Alternatively, a single rail on each side of the film may be used at each side of the opening 3. In projectors using small film, the guide rails may be provided at one side only of the gate opening. One edge of the film contacts with rounded portions 14 of a guide strip 12, and the condenser 17 is retained in a rim 19 on the upper side of the plate 1. A slot 15 in the plate 1, or in a part adjustably secured to it, allows identification markings on the edge of the film to be printed. The plates 1, 2 may be hinged together.
Patent GB-326986-A (GB)
Title: Improvements relating to automatic and semi-automatic telephone systems
IPC: H04Q3/00
Filed: 1929-03-09
Abstract: 326,986. Siemens Bros. & Co., Ltd., and Patterson, W. G. March 9, 1929. Automatic exchange systems. - In a selector having two sets of wipers, hunting simultaneously, and two test relays, one or each of these relays has, in addition to its operating winding connected to the associated test wiper, a winding connected to the other test wiper and arranged so that when idle outlets are encountered simultaneously, one test relay is quicker to operate than the other. One relay may have a differential winding connected in series or parallel with a single winding of the other relay so that the first relay will not be operated by its differential winding and will be retarded or prevented from operating when current flows over both windings. The other relay may also have a winding in the operating circuit of the first relay so that it is quicker to operate when current flows over both of its windings. Twogroup selectors are described. Group selector, Fig. 1, testing for battery on idle outlets. Impulse relay A operates over the b wire and change-over relay D pulls up over Di to prepare the circuit VM. At the first vertical step the circuit Di is opened at n3 but this relay holds over Dii during the impulse train, and then falls back to complete the circuit of RM. If test wiper C1 finds battery first, TP operates over i but the current over TSii fails to operate the other test relay which is energized over TSi only when C2 finds battery first. When both test wipers find-battery simultaneously, the windings of TS oppose each other and prevent or retard its operation. The test relays each open the operating circuit of the ether, and have locking windings TPii, TSiii. If all outlets are busy, TP operates over C1 and the last bank contact, and stops the drive. A busy signal may be given. Group selector, Fig. 2, testing for absence of ground. Impulse relay A operates over the calling loop, and energizes B which connects the windings of shunt-field stepping-relay G to the test wipers C1, C2. The impulses are repeated to VM over D, which completes circuits from ground at b2 for both windings of G which lock over g2, g3. When D falls back, RM operates and interacts with G until either or both test wipers fail to find ground. If C1 fails to find ground, TP operates in series with the righthand winding G which remains inert, although its left-hand winding is energized over C2. The other test relay TS has two windings arranged as described with reference to Fig. 1 so that it does not operate when idle outlets are found simultaneously. Each test relay opens the operating circuit of the other. When all outlets are busy, the switch steps on to last contacts, the reoperation of G being prevented and busy tone connected up by cam springs s2, s1 respectively. The last contacts of C1, C2 are grounded to prevent the operation of TP, TS.
Patent GB-609410-A (GB)
Title: Improvements in or relating to dough mixing and kneading machines
IPC: A21C1/00
Filed: 1946-03-13
Abstract: 609,410. Mixing-machines. DUMBRILL, A. W., and DUMBRILL PLANT & ENGINEERING CO., Ltd. March 13, 1946, No. 7833. [Class 86] A dough mixing and kneading machine comprises a revoluble mixing bowl into which extends a kneading arm adapted to swing to and fro and simultaneously up and down so that its end moves in a substantially elliptical path in the bowl, and operated by a crank shaft mounted in bearings in the upper end of the framework of the machine and driven by belt-driving mechanism mounted between the side frames of the machine. The driving mechanism may be totally enclosed in a casing connected to the side frames of the machine. A kneader arm b has a slotted link portion f engaged by a roller g fixed on a rotatable shaft x and is pivotally connected to a crank pin y of a crank shaft z mounted in bearings in side frame members d. The crank shaft z is rotated by belt driving mechanism totally enclosed by a sheet metal casing w connected to the side frames d. A motor p drives, through multiple V-belts q, a countershaft r provided with a sliding clutch t adapted to connect the countershaft simultaneously with pulleys for multiple V-belts u, v, driving separately the kneading arm b and the mixing bowl k.
Patent GB-726240-A (GB)
Title: Improvements in and relating to high frequency communication systems
IPC: H04B1/26
Filed: 1953-03-23
Abstract: 726,240. Radio signalling; receiving systems. GENERAL ELECTRIC CO. March 23, 1953 (March 25, 1952], No. 7913/53. Class 40 (5). In a selective calling system a receiver has a gaseous discharge tube 49 to the anode of which H.T. is applied by the received carrier and to the grid of which a particular call tone of short duration, e.g. one half second, when transmitted is applied from a selective amplifier 59 to fire the tube. This short circuits one resistance 46 of a resistance bridge so that the voltage across the terminals 54, 53 alters from zero to a value cutting off the valve 71 and therefore opening a normally blocked gate valve 72 to which the demodulated incoming signal is applied. The signal therefore is received so long as the carrier is transmitted but is cut off when the carrier ceases, the gaseous tube 49 then reverting to its unenergized condition. The H.T. may be derived from the cathode of a series-connected gate valve 39 operated from an amplifier valve 29 and cathode follower 24, operated by the negative bias voltage which builds up on the grid of a limiter valve 4 of a frequency modulation receiver when a carrier is received. In a modification the valve 39 is omitted, the resistance 36 being connected direct to the anode of the gaseous tube, and the tube cathode through the resistance 45 to a H.T. voltage-divider network.
Patent GB-707826-A (GB)
Title: Improvements in or relating to "tip-up" seats
Inventor: KEAR FREDERICK MAURICE
IPC: A47C7/58
Filed: 1952-03-27
Abstract: 707,826. Tip-up seats. DAWSONS (SEATING), Ltd. June 16, 1953 [March 27, 1952], No. 7925/52. Class 52(5) Tip-up seats which are counter-weighted so as to assume automatically a raised position when vacated are provided with a counterweighting arrangement which is separate from the chair bracket and is capable of adjustment to vary the turning moment. As shown at each side of the underside of the seat 1 is mounted a main bracket having a boss 5 to serve as a bearing for the pivot 6 carried by the support 2 which is usually fixed to the floor. The bracket 3 is arcuate as shown and is provided with a recess at the part facing the undersurface of the seat 1 in which recess is slidable a counterweighting extension 4, the counterweight being indicated at 11. Screws 10 are provided for fixing the main bracket 3 and the extension 4 to the seat 1. The main bracket is provided with the usual lugs 7 to carry a rubber buffer 8 adapted to abut stops both in the in-use position and in the vacated position.
Patent GB-1136934-A (GB)
Title: Assembling and displacing device for rolled bars, particularly sections
IPC: B21B39/22
Filed: 1966-02-23
Abstract: 1,136,934. Rolling. SIEMAG SIEGENER MASCHINENBAU G.m.b.H. 23 Feb., 1966 [23 Feb., 1965], No. 8014/66. Addition to 1,130,862. Heading B3M. The device described in Specification 1,130,862 for transfering rolled stock 2 from a roller table 1 to a conveyer 4 arranged laterally thereto is modified in that the levers 5 are shaped to have two lifting surfaces. The stock is transferred from the roller table by manipulation of lever linkages by fluid cylinders 8, 11 so that the levers 5 move up under the stock on the table and lift the stock off the table. The pivot pin 6 of the levers is moved horizontally in guides 7 and the levers rotated counterclockwise to deposit the stock of the conveyer 4, e.g. a cooling table. The support lug 5b on each lever prevents close assembling of the stock on the conveyer when the surface to the left of the lug is used so alternatively the levers can be manipulated to use the other surface 5c to deposit the stock close together.
Patent GB-254009-A (GB)
Title: Improvements in or relating to moulds for casting walls and similar structures of concrete and similar material
IPC: B28B7/00
Filed: 1925-03-25
Abstract: 254,009. Burditt, T. H. F. March 25. 1925. Moulds for casting walls. partitions, floors. roofs &c. in a horizontal position comprise a base in the face of the structure and side members in the form of channel irons &c. adapted to have reinforcing-members attached thereto under tension and to be removed from the mould with the cast structure and serve for the attachment of lifting and transporting tackle. A wall mould is shown comprising a base b supported by a frame c between which and the base may be disposed adjusting and levelling means. The mould sides comprise channel irons g, bolted to brackets a extending from the base, which are apertured to receive the hooks of lifting-tackle and carry hooked bolts k<1> for the reinforcing-member k. The upper flanges of the sides g serve as a guide for a screed and may support additional mould members m. Bolts n secure the sides g to the cast structure. In use, after the structure has been cast, bolts h securing the sides g to the brackets a are unscrewed and the structure transported within the sides, to position and erected, after which the sides are removed from the bolts n. Movable side walls or banks may be employed in place of the brackets a such banks being adapted to be connected to the channel irons g and to each other at their adjacent ends. According to the Provisional Specification the mould banks are secured at adjacent ends to pins and notches secured by spring detents or tapered pins.
Patent GB-253248-A (GB)
Title: An improved method of recovering water from the exhaust gases of aircraft motors, and apparatus therefor
IPC: B64B1/40
Filed: 1925-03-25
Abstract: 253,248. Page, S. E., (Parker, H. F.). March 25, 1925. Fumes, moistening. -The exhaust gas of the internal-combustion engines used on aircraft is cooled by spraying with water. A pipe 3 delivers the exhaust gas to a chamber 4 containing water sprays 30. The Provisional Specification describes an arrangement in which the pipe 3 is tangential to the chamber 4.
Patent GB-550233-A (GB)
Title: Improvements in or relating to the setting of tags or like articles
IPC: A43D71/02
Filed: 1941-06-27
Abstract: 550,233. Setting barrelled fasteners. BRITISH UNITED SHOE MACHINERY CO., Ltd., PRATT, J. W., and GREEN, T. A. June 27, 1941. No. 8078. Addition to 519,300. [Class 43] The machine described in the parent Specification is modified. The block 20 for receiving the tag has an upwardly projecting rectangular stem 22 guided for vertical movement in the frame and urged upwardly by a spring 24. As the upper die 10 descends the tag tongues will cause the block to descend until its under side contacts with the work, then the barrel of the tag is forced through the hole in the block, bending up the tags, the barrel is clenched in the work against the lower die and the upper die and block return. The end of the raceway 14 carries a stop adapted to centralize the tag. The lower die has an upstanding central portion 32 of rectangular section, which causes the clenched over portion of the barrel to split into four tabs against the work. A rotating brush 42 urges the tags into the raceway surfaces 52, 54 aligning the tags with the side members of the raceway. A spring finger 60 may be pushed inwards by the operator to clear the inlet of misplaced tags.
Patent GB-579486-A (GB)
Title: Improvements in clock mechanisms
IPC: G04C15/00
Filed: 1944-04-29
Abstract: 579,486. Clocks. AC-SPHINX SPARKING PLUG CO., Ltd., BROWNE, D. B., and PAINTER, R. H. G. April 29, 1944, No. 8084. [Class 139] A clock comprises mechanism in which the minute hand is driven by the prime-mover through a pawl-and-ratchet drive and the hour hand is driven from the minute hand drive by a transfer means incorporating an interrupted tooth drive. A synchronous motor comprising a'coil 1, Fig. 1, a stator 2 and a rotor 3 drives a worm 4 meshing with a worm-wheel 5 which is on the same shaft as a second worm 6 which drives a wheel 7. The shaft 8 of the worm-wheel 7 carries eccentrically a spring- pressed pawl 9 which moves a wheel 10, of 60 teeth, one tooth per second. The ratchetwheel 10 is engaged by a back-stop pawl 12 and is carried by a shaft 13 which also carries the minute hand 14. The hour hand 20 is driven by means of a five-toothed disc 15, mounted on the minute shaft, and transfer wheels 17, 18, 19. The synchronous motor and the reduction gear, i.e. the worms and the ratchet, are mounted on a rear plate, Fig. 2 (not shown), and the ratchet-wheel, transfer train, hands and clock face are carried by a front plate joined to the rear plate by spacer bolts.
Patent GB-775611-A (GB)
Title: Underwater breathing apparatus
IPC: B63C11/22
Filed: 1955-03-21
Abstract: 775,611. Respiratory appliances. PAGE, R. E. March 21, 1955 [March 29, 1954], No. 8164/55. Class 81(2) In an open circuit under-water breathing apparatus the mouthpiece is provided with inlet and exhaust valves so that it can be blown clear' of water, if necessary, while below the surface. The device has a cylindrical body 30 from which a flat tubular connection 51 extends radially to the actual mouthpiece. At each end a disc valve 38, 38<SP>1</SP> is clamped by a flanged connecting member 44, 44<SP>1</SP> and valve 38 serves as an inlet valve, while the other 38<SP>1</SP> serves as an exhaust walve and leads to the usual exhalation tube and valve of the breathing equipment. If the mouthpiece becomes filled with water while submerged, the user blows into it and so forces the water out through the valve 38<SP>1</SP>, this being repeated until the system is clear. In order that complete clearance may be obtained, the exhaust valve seating is large enough for its inner edge 36<SP>1</SP> to be flush with the inner face of the body 30, so that no water can be trapped. Air is supplied to the mouthpiece through a two-stage pressure regulator mounted on the air cylinder strapped to the user's back.
Patent GB-783990-A (GB)
Title: Improvements in or relating to lapping machines
IPC: B24B37/10
Filed: 1955-03-21
Abstract: 783,990. Lapping. CRANE PACKING CO. March 21, 1955 [March 29, 1954], No. 8202/55. Class 60. A machine for lapping flat work such as the running faces of rotary mechanical seal elements comprises an annular lap plate 48, e.g., of cast iron secured to a hub 46 keyed to a hollow shaft 38. The hollow shaft 38 is journalled within a sleeve 30 supported by beams 24, 26, 28 and an elliptical partition 32, from the cylindrical casing 14 of the machine. A shaft 70 rotatably mounted within the hollow shaft 38 carries at its upper end a drive member 72 having a frusto-conical portion and a cylindrical portion, the latter carrying a band of rubber or other friction material. Four wear rings 74 preferably formed of the same material as the lap rest on the annular surface of the lap and overhang slightly both the inner and outer peripheries. The knurled periphery of each wear ring engages the friction band on the drive member 72 and also a rubber or other resilient friction band on a freely rotatable roller 76 carried by a bracket 78 secured to the upper rim of the casing 14, there being one such roller for each wear ring. The wear rings are thus restrained from being carried around the axis of the lap due to the rotation of the lap, while their rotation about their own axes is controlled by the drive member 72. A motor M1 on the machine base, drives, through reduction gear 102, a shaft 104 which drives, through a pair of belts 120, the hollow shaft 38 carrying the lap. The shaft 104 also drives, through gears 122, 124, 126, 128 contained in a gear box 108, a shaft 130 which drives, through belt 140 and expandable pulley 136, the shaft 70 carrying the drive member 72. The gear box 108 is pivoted about the shaft 104 by a turnbuckle 114 interposed between an ear 110 on the gear box and the casing 14, adjustment of the turnbuckle thus altering the speed at which the shaft 70 is driven. A lapping compound container 150 is mounted on the inside of an access door 20. A submerged impeller 204, driven by a motor M2, forces lapping compound up a pipe 160 to a fitting 164 having a drip opening 166 controlled by an adjustable valve 194; excess compound returns through an inner pipe 174 and enters the container through a nozzle 178 so as to agitate the contents of the container. When the door 20 is closed the opening 166 is situated above the drive member 72 so that compound drips on to the frusto-conical portion thereof, and then is transferred to the sides of the wear rings and so on to the lap plate at widely distributed points. The work is placed within the wear rings, and the desired shape of lap is maintained by adjusting the rate of rotation of the rings.