baber/WOPTO huggingface dataset:
Patent GB-668947-A (GB)
Title: Improvements in circuit-arrangements for producing high direct voltages
IPC: H04N3/18
Filed: 1950-02-14
Abstract: 668,947. Rectifying. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 14, 1950 [Feb. 17, 1949], No. 3757/50. Class 38 (ii). A current arrangement for producing a high direct voltage with the use of a voltage multiplier fed by pulses and comprising a series combination of a number of rectifiers 1, 2, 3, 4 of identical conducting phase and a number of capacitors 7, 8, 9, 10, 22, 23, at least one electrode of each succeeding capacitor having a greater potential relative to earth than either electrode of the preceding capacitor, is characterized by the combination of a non-controllable source 14 and a controllable source 15 of a pulse voltage followed by the voltage multiplier which sums a whole multiple of the rectified non-controllable voltage with a whole multiple of the rectified controllable voltage. The pulse voltages at the sources 14, 15 are both positive going at the same instant, the voltage pulses in the output transformers 31, 32 being produced by the application of a saw-tooth voltage Vz applied to the control grids of the tubes 28, 29 respectively, the amplitude of the voltage pulses in the transformer 32 being controlled by the application of a control voltage Vr between the control grid and the cathode of the tube 29. A substantially constant high voltage is thus available at the point 30-its polarity depending on the direction of the connections between the rectifiers 1, 2, 3, 4-with the use of the existing non-controllable pulse voltage without any detriment to the size or focus of the cathode-ray tube image in a television receiver. Also with this circuit arrangement the controllable pulse voltage source needs to supply less energy than if it were the sole energy source for the high voltage. Various embodiments are described, in which the pulses may be arranged to be opposite going or in which the impedances 17, 18, 19 may be omitted. In this latter embodiment a delay circuit must be introduced between the control grid of the tube 29 and the source of the saw-tooth voltage Vz so that the controlled and uncontrolled voltage pulses do not occur simultaneously.
Patent GB-725432-A (GB)
Title: Improved collet chuck
IPC: B23B31/20
Filed: 1953-02-10
Abstract: 725,432. Chucks. BRANDHANDLER, F., and DENZLER, B., [trading as DAVOS PRODUCTS CO.]. Feb. 10, 1953 [Feb. 14, 1952], No. 3771/53. Class 83 (3). A bevel-closing chuck comprises a body 10, an interchangeable cored adapter 24 press-fitted into the body, and a collet 22 adjustably screwed to a draw ring 28 which is engaged by levers 74 pivoted on the body and moved to close the chuck by a cone surface 90 on a sleeve 84 sliding on the body. Means for locking the collet to the draw ring in its adjusted position comprise either a loose ring 26, Fig. 3, keyed to the rear end of the collet by a pin 108 and locked by a set screw 112 (not shown) extending from the outside of the body to engage an annular groove 114 in the ring 26 or by a ring 261, Fig. 6, having a lug 1081 engaging a groove 1101 in the forward end of the collet and locked by diametrically-opposite set-screws 1121 extending through the ring to engage a groove 291 in the housing 10<SP>1</SP>. A fixed pin engaging a slot in the draw ring prevents it from rotating relative to the body. The operating sleeve 84 is actuated either by a yoke lever 98 or by moving manually an outer sleeve 116<SP>1</SP> rotatable on the operating sleeve and, as shown in Fig. 3, the cone surface 90 may be followed by a cylindrical surface 91 for locking the levers 74 in the closed position. The collet is moved to the open position by a spring 42 or 42<SP>1</SP> bearing on a spring circlip 44 or on a retaining member 44<SP>1</SP>. The interchangeable adapter 24 is not provided in the version of Fig. 6 and a cone surface 54<SP>1</SP> is formed on the body 10.
Patent GB-346656-A (GB)
Title: Improvements in or relating to metallising by the melting and projection of metals
IPC: B05B7/20
Filed: 1929-12-09
Abstract: 346,656. Metallizing by spraying. SOC. NOUVELLE DE METALLISATION, 26, Rue Clisson, Paris. Dec. 9, 1929, No. 37761. Convention date, Dec. 7, 1928. [Class 82 (ii).] A blowpipe or pistol for melting and spraying metal comprises a central nozzle though which metal wire is passed surrounded by three or more concentric nozzles forming channels, through one of which is passed combustible gas, compressed air being passed through the others, the nozzles all ending in different vertical planes. A central nozzle 1, Fig. 7, forms a channel 2 for the metal wire and is surrounded by three concentric nozzles forming a gas channel 3 and compressed air channels 6, 9 in communication with one another through apertures 8. Gas is supplied to the channel 3 through an orifice 5 and air to the channel 6 through an orifice 7. The combustible gas is mixed in a mixer, Fig. 4, situated outside the pistol and comprising a central channel 27 down which oxygen passes and sucks in fuel gas, e.g. acetylene, through a side passage 28, a baffle chamber 29 at the end of the channel 27 ensuring intimate mixture. A safety device comprises a chamber 32 closed at one end by a weak disc 33 secured by a nut 34. A chamber 35, Fig. 6, in which is disposed a ball 36 which can be brought by a spring or by gravity on to its seat 37 may be provided in the path of the gas so that the supply of gas may be readily cut off. Side conduits 39 are provided surrounding the central conduit 38. The air and gas are supplied to the orifices 7, 5 through channels 13, 12, Fig. 5, controlled by cocks 15, 14 operated by a common handle 16. The wire 25 is fed by milled rolls 24 operated, through worm gearing 21, 22 disposed in a casing 26 filled with lubricant, by a turbine wheel worked by compressed air passing down a branch from the channel 13.
Patent GB-399376-A (GB)
Title: Improvements relating to adjustable spanners
IPC: B25F1/00
Filed: 1933-02-08
Abstract: 399,376. Combination wrench. FORSTER, B., Benrose, Broom Lane, Higher Broughton, Manchester. Feb. 8, 1933, No. 3819. [Classes 61 (ii) and 61 (iii).] A movable-jaw wrench with jaws c in line with the shank has the body part opposite the end of the rack adjustment shank b provided with a hammer head a. The opposite side of the wrench is provided with a nail extractor d, and the shank is formed on one side as a file e, on the other side as a measure of length and at the end as a screwdriver f.
Patent GB-139585-A (GB)
Title: Improvements in connection with hot water service boilers or heaters and storage apparatus
IPC: F24H1/50
Filed: 1919-02-18
Abstract: 139,585. Wheeler, E. A., (Representativeof Wheeler, A. E.), Clare, G. E., and Eldred, H. Feb. 18, 1919. Heating water. - The water in a boiler B is heated from any source through the medium of a jacket in which steam is generated. The supply of fuel or heating-medium is controlled, according to the pressure of steam, by a diaphragm valve H. Flow and return pipes may connect the boiler with a storage reservoir D.
Patent GB-470340-A (GB)
Title: Improvements in or relating to weft stop motions for looms for weaving
IPC: D03D51/34
Filed: 1936-02-10
Abstract: 470,340. Weft stop-motions for looms. SOC. ALSACIENNE DE CONSTRUCTIONS MECANIQUES. Feb. 10, 1936, No. 4006. Convention date, Oct. 22, 1935. [Class 142 (i)] A stop-motion device comprises a slide 11 that is movable vertically on the lay during normal running by resilient connections 13, 6 from the reciprocating rod 2 of a centre-weftdetector. When the rod 2 is stopped as the result of weft breakage, a finger on the slide 11 engages an abutment 15 on a control member 14 and operates clutch and braking mechanism through a rod t and the starting handle 21. Towards the end of its forward movement, a further abutment 16 on the member 14 engages a projection 30<1> and raises a ramp 18 against a roller 28 to disengage the slide from the. abutment 15. On restarting, pressure of a hand grip 22 operates a bell-crank lever 25-26 and raises the ramp 18 to prevent engagement of the members 11, 14 on the first pick after restarting.
Patent GB-1411983-A (GB)
Title: Brake control system
IPC: B60T13/36
Filed: 1972-10-16
Abstract: 1411983 Tractor/trailer braking systems EATON CORP 16 Oct 1972 [26 Oct 1971] 4006/75 Divided out of 1411981 Heading F2F The Specification is identical to the parent Specification 1,411,981 but the claims relate to a brake control system. (For Ftgqxre 2 see next page.) (For Figure 2 see next page.)
Patent GB-1072973-A (GB)
Title: A stock and die device
IPC: B23G1/22
Filed: 1966-01-28
Abstract: 1,072,973. Screwing die heads. GEORG FISCHER A.G. Jan. 28, 1966 [Jan. 29, 1965], No. 4039/66. Heading B3N. A stock and die for cutting a conical screw thread on the end of a pipe 1, Fig. 1, comprises thread-cutting dies 21 adjusted for cutting diameter by a nut 17, a sleeve 2 having screw threads 11, 12 of different pitch, and a rod 4 in the sleeve, which actuates a wedge 8 to clamp the pipe. A nut 13 is secured to a housing 15 which latter can be rotated by a ratchet 26, or in a modification, the ratchet is replaced by an auxiliary gear system, Figs. 3, 4 (not shown). In operation, wedge 8 is inserted into the pipe 1, and clamped by turning nut 6. The screw thread 11, and that on nut 13, have the thread pitch desired on the pipe, and the pitch of screwthread 12 and nut 17 is smaller. Housing 15 is rotated and moves along thread 11, whilst nut 17 moves axially at a slower rate, and therefore moves the dies slowly in an outward radial direction, to thus form a conical thread on the pipe. The auxiliary gear system, Figs. 3 and 4 (not shown); comprises a housing (31) and a cover (32), a toothed annulus (36) located between members (31), (32) and keyed to housing (15) by a key (33a), a shaft (34) having a pinion (35) which drives annulus (36) by a further pinion (38), and a guide (39) freely rotatable on shaft (34) and fitted on to sleeve. (2). For thread-cutting, a lever is mounted on the square head (37) of shaft (34), and housing 15 is rotated through gearing (35), (38), (36).
Patent GB-789455-A (GB)
Title: Improved friction locking device for mine roof supports, pit props and the like
Inventor: TEBB BERNARD
IPC: E21D15/28
Filed: 1955-02-11
Abstract: 789,455. Wedges. MASTABAR MINING EQUIPMENT CO., Ltd., [formerly MASTABAR BELT FASTENER CO., Ltd.]. Dec. 30, 1955 [Feb. 11, 1955], No. 4095/55. Class 89(2) [Also in Group X] A pit-prop having telescopic parts i, o, is locked by a collar c resting on the outer part o and clamped to the part i by a wedge m forced between wedges' w<SP>1</SP>, w<SP>2</SP> pressed against inclined - surfaces on a pressure-pad p bearing against the part i. A spindle s passes through and has a head f bearing on the wedge m, which is driven between the wedges w<SP>1</SP>, w<SP>2</SP> by hammer-blows on the head f and retained in position by a nut n. The spindle s is guided in slots in the collar c.
Patent GB-1385243-A (GB)
Title: Method and apparatus for the quench-hardening of tubes
IPC: C21D1/667
Filed: 1972-01-28
Abstract: 1385243 Quenching tubes MANNESMANN AG 28 Jan 1972 [1 Feb 1971] 4226/72 Heading C7N A steel tube is quench-hardened by heating the tube to its autentitizing temperature and quenching in a horizontal position by applying quenching medium to the external and internal surfaces while the tube is rotated so that a point thereon is moved helically about the tube axis. The quantity of quench medium applied per unit area to the internal surface is at most half as much as that applied externally and an axial air flow towards the quenched end of the tube is produced by the flow of quenching medium itself. As shown quenching is effected by internal and external nozzle rings 5 and 4 to tube 2 which has been heated in furnace 1. Internal ring 5 has attached cylindrical means 12 providing a narrow annular space 16 in which air flow is induced by the flow of quenching medium. This air flow may be assisted by compressed air from nozzle 17. Support means 8, 9, 14, 15 centralize the internal quench head during its passage along the tube.
Patent GB-1448772-A (GB)
Title: Process of reacting epoxy resins with phenols and epoxy resin compositions
IPC: C08G59/00
Filed: 1974-01-30
Abstract: 1448772 Epoxy resins DOW CHEMICAL CO 30 Jan 1974 04345/74 Heading C3B The reaction between epoxy resins and phenols is catalysted by a 3-(trihydrocarbylphosphorarylidine)-2,5-pyrrolidinedione (I). I may have the formula in which each R is phenyl or C 1-18  alkyl and R<SP>1</SP> is H, phenyl or C 1-4  alkyl. I may be used at 0À05-5% based on the combined weight of epoxy resin and phenol. Reaction may take place at 50-225‹ C. Diglycidyl ethers of dihydric phenols and epoxy novolacs are suitable starting materials which may be reacted with dihydric phenols to yield epoxy resins of higher M.W. Also claimed are compositions of epoxy resins and I.
Patent GB-741834-A (GB)
Title: Improvements in or relating to a honing tool
IPC: B24B33/08
Filed: 1953-02-17
Abstract: 741,834. Internal grinding. MICROMATIC HONE CORPORATION. Feb. 17, 1953 [April 22, 1952; April 22, 1952], No. 4410/53. Class 60 An internal hone comprises a body 11, Fig. 1, adapted to be simultaneously reciprocated and rotated, at least one abrasive stone 14 of elongated shape mounted in the body with its axis inclined to the axis of the body and its working surface 16 disposed obliquely to its axis, and means operative upon the rear end of the stone for moving it in the direction of its axis and outwardly of the body for bringing its working surface into engagement with the internal surface of the work to be honed. As shown in Fig. 1, a single abrasive stone in the form of a cylindrical rod 14 is slidable in a tube 19 which is mounted in the body at an angle to the longitudinal axis of the latter; the working surface 16 is backed up against the surface of the workpiece 18 by a hardened steel guide 39 of tapered form carried by the rod 19 and engaging the opposite inner surface of the workpiece. The rod 14, which is protected by a plastic sheath 20, is fed forwardly in the tube 19 by a feed rod 29 which carries a slide 28 engaging the head 25 of a plunger 24 acting upon the end of the rod 14. The body 11 is carried by the usual reciprocatingandrotating mechanism and the feed rod 29 is connected by a ball-joint to means for advancing it during operation. The work piece is mounted in a space 51 between front and rear supports 52, 53, being secured between the spaced jaws 49, Fig. 5, of a clamp 46 which is mounted on a pin 47 so that it can swing against a stop 48. During operation, reciprocation and rotation of the body, together with feed of the rod 14, continue until the working surface of the latter contacts a hardened steel gauge ring 58 carried by a cam 56 mounted rotatably on the support 52; the consequent rotation of the cam actuates a switch to stop the operation. In the modification shown in Fig. 6, the hone body, which comprises an enlarged head 63 with a narrowed cylindrical working portion 62, is provided with four abrasive stones 76 disposed in inclined passages 82 which open into the side of the portion 62; the exposed working surfaces of the stones are of trapezoidal shape. The head 63 is fitted with a cap 64 which is secured by a screwed collar 71 to a tube 68 connected with the reciprocating and rotating .mechanism. The rear ends of the stones 76 extend into recesses 79 in the cap 64 where they are engaged by bars 95, Fig. 7, carried by a head member 94 axially movable within the cap 64 and head 63; the member 94 is connected by a ball-lock 91 with a feed rod 69 disposed within the tube 68. Guide members 88 are mounted on the hone position in alternating relation with the working surfaces of the stones.
Patent GB-1518003-A (GB)
Title: Method for elimination of furnace roll pickup marks on silicon containing sheet steel
IPC: C21D9/52
Filed: 1976-02-04
Abstract: 1518003 Annealing silicon steel sheet USS ENGS & CONSULTANTS Inc 4 Feb 1976 [10 Feb 1975] 04425/76 Heading C7N In the decarburizing annealing of Si steel sheet in a furnace containing rolls having silica surfaces, roll pick up is substantially eliminated by annealing at 1400-1650F in an atmosphere containing H 2  and H 2 O in a ratio such that no oxides other than SiO 2  are formed on the steel sheet (SiO 2  is not picked up by the rolls). The ratio of H 2  to H 2 O is preferably 5-8, and the atmosphere contains 20-80% H 2  remainder H 2 O and an inert gas, e.g. N 2 . To effect grain growth, the steel may be subsequently heated to 1650-2000F in an atmosphere containing H 2  and H 2 O in a ratio of 8-30.
Patent GB-556588-A (GB)
Title: Improvements in or relating to panel and like fasteners, particularly for use in aircraft
IPC: B64D29/08
Filed: 1942-04-02
Abstract: 556,588. Panel fastenings. TITCOMBE, R. L. April 2, 1942, No. 4431. [Class 44] A fastening for aircraft panels and the like having members adapted to engage in registering apertures formed in overlapping portions of the panel 10 and its seating 11, comprises two members 12, 13 pivotally mounted together at 20 between lugs 26, carried by the panel and adapted to be folded together as in Fig. 6, to allow them to pass through the aperture 11 in the seat 11. The lugs 26 are mounted on the near face of a cross-piece 29 separating a pair of apertures 14 in the panel which together register with aperture 16. Members 12, 13, are of dished formation providing portions 17 adapted to enter and fit in apertures 14, 16 from the near side, and larger portions 19 adapted to overlie the edges of aperture 16 with shoulders 15 bearing against the near face of seat 11 when in fastening position, Figs 3, 5. The members are urged to. this position by the arms 22, 23 of a spring mounted on the pivot pin 20. In use the requisite number of fastening devices and apertures are provided at intervals and the members 12, 13 of each fastener are brought together by inserting finger and thumb, through apertures 14, Fig 6 The parts 19 nest together and the outer part carries a spring catch 24 which snaps over the shoulder 15 of the inner part to retain the members in this position., A stop 31 co-operating with shoulders 30 holds the nested members substantially normal to the rear face of the panel. The panel is then placed on its seating, the nested members 12, 13 passing through the corresponding apertures 16. Finger pressure on catch 24 releases the catch and allows members 12, 13, to swing into engagement with the apertures 14, 16, as in Fig. 5, by the action of spring arms 22, 23, members 12, 13 coming flush with the outer face of the panel. The apertures may be of any suitable shape and are shown as having bevelled edges and with lateral slots 18 in apertures 16 to allow passage therethrough of the parts 19 and lugs 26. Rubber coatings may be provided to give watertight fastenings and prevent rattle.
Patent GB-1472068-A (GB)
Title: Manufacture of cigarettes
IPC: A24C5/34
Filed: 1974-01-31
Abstract: 1472068 Testing cigarette wrappers MOLINS Ltd 30 Jan 1975 [31 Jan 1974] 04464/74 Heading A2C A device for testing the wrappers of cigarettes for leaks by producing a pressure differential between the inside and outside of each cigarette during testing includes a conveyor e.g. testing drum 4 for carrying the cigarettes 6 during testing, a stationary member adjacent to the conveyor arranged to define, together with the conveyor, a chamber 3 extending around each cigarette during testing, and movable sealing means 10 carried by the conveyor adjacent to opposite ends ot the cigarette for restricting communication between the chamber and the inside of the cigarette via the ends of the cigarette, the movable sealing means comprising slidable members which are slidably movable over the ends of the cigarette from positions spaced from the ends of the cigarette. Each member 10 is linearly movable along a part 20 on the drum, which has a rail 22 for keeping the member 10 on the part 20 while allowing the necessary sliding motion.
Patent GB-525022-A (GB)
Title: Improvements in or relating to modulation systems for modulating ultra short waves
IPC: H03C1/30
Filed: 1939-02-11
Abstract: 525,022. Valve modulating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Feb. 11, 1939, No. 4564. Convention date, Feb. 11,1938. [Classes 39 (i) and 40 (v)] In an arrangement for the modulation of ultra-short waves generated by a magnetron or retarding-field system, reaction of the modulation on the oscillation-generator is avoided by coupling electronically a further electrode system to the oscillator, and modulating the current which flows to the output electrode of the further system. The two segments of the magnetron 8, 8<SP>1</SP>, are provided with apertures 9, 9<SP>1</SP> through which some of the oscillating electrons can pass. Beyond the apertures are positively-biassed electrodes 4, 4<SP>1</SP>, followed by modulation grids 5, 5<SP>1</SP>, and output electrodes 6, 6<SP>1</SP>. The whole arrangement operates in push-pull, oppositely-phased voltages being taken-off from electrodes 6, 6<SP>1</SP>, and transmitted through coaxial feeders F, F<SP>1</SP>. The control voltages supplied to grids 5, 5<SP>1</SP>, are in the same phase, or may represent different messages for multiplexing. Only one segment may be provided with an aperture, or existing gaps between the anode segments may be employed for the passage of the electron current to be modulated. In the arrangement of Fig. 3 (not shown), a single tangential opening is employed in one anode segment and is followed by a positivelybiassed electrode (which may have an electronoptical converging effect) and a series of secondary-emissive multiplier-electrodes. The multiplied electron stream passes into a modulation system consisting of a control grid and a final anode. A Barkhausen-Kurz oscillator according to the invention comprises, Fig. 1 (not shown), a valve with a cathode, and two grids acting as accelerating and retarding electrodes, and outside this system, a positivelybiassed screening electrode, followed by the modulating-grid and output electrode. A coaxial feeder connected to the output electrode has its outer conductor extended to form a screen around the modulating section.
Patent GB-1125043-A (GB)
Title: Radio telegraph signal transmission
Inventor: GROVES KENNETH
IPC: H04L27/32
Filed: 1966-02-02
Abstract: 1,125,043. Telegraphy. H. M. POSTMASTER GENERAL. 31 Jan., 1967 [2 Feb., 1966], No. 4596/66. Heading H4P. To reduce amplitude distortion effects in a frequency modulated telegraph system the carrier is amplitude modulated according to the element transitions. Telegraph signals at the transmitter pass via a quarter element delay to the frequency modulator, and also pass to a unit which develops a signal a half-element long for each transition. The latter signal amplitude modulates the f.m. signal. The composite signal, after filtering, passes over a radio link to the. receiver filter. Due to the characteristics of the filters and the radio link, the output of the receiver filter has substantially no amplitude variation, i.e. is a true f.m. signal, and is passed to the demodulator. The degree of amplitude modulation is such that, for a signal Mark, Space, Mark, Space, etc. the amplitude of the second order side-band is greater than that due to the frequency modulation alone. In an alternative embodiment the transition pulse amplitude modulate a carrier, the resulting signal being frequency modulated by the signals. In a further embodiment the a.m. and f.m. operations take place separately, the modulator outputs being summed prior to transmission.