baber/WOPTO huggingface dataset:
Patent GB-1422178-A (GB)
Title: Stepping motor supply circuit
IPC: H02P8/12
Filed: 1973-05-16
Abstract: 1422178 Control of stepping motors CARL ZEISS JENA VEB 16 May 1973 23292/73 Heading H2J In a supply circuit for a stepping motor arranged to operate over a wide speed range, one end of each of a plurality of excitation windings 16-19 is connected to a common voltage source U B <SP>+</SP>, each of the other ends being connected to the collector of a respective power transistor 12-15 the bases of which are connected to a common voltage U 1  stabilized by a Zener diode 3. Control signals X 1  #X 1 , X 2  #X 2  switch control transistors 4-7 in pairs, thereby controlling the current through the power transistors and the motor windings. The arrangement reduces the inductive time constant of the motor windings and switch-off peaks induced therein by the mutual inductance M of the windings are limited by the diode effect of transistors 12-15, thus avoiding the need for protection diodes in parallel with the respective windings. Constant excitation current in the windings 16-19 is provided by the arrangement of transistors 4-7 and resistors 8-11 and 20-23.
Patent GB-1109637-A (GB)
Title: Improvements in or relating to transistor mixing circuit arrangements
IPC: H03D7/12
Filed: 1966-05-25
Abstract: 1,109,637. Transistor frequency changing circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 25 May, 1966 [28 May, 1965], No. 23299/66. Heading H3T. A mixing circuit includes a transistor oscillator 15 and a transistor mixer 4 the emitter circuit of which receives input signals through a resonant circuit 1, 2 tuned to the input signals, the base circuits of the two transistors including a common resistor 10, which resistor has a low value with respect to the impedance of oscillator resonant circuit 18, 19. Preferably resistor 10 is less than ¢% of this impedance, thus ensuring the least spurious coupling between the elements of the oscillator and mixer stages. The circuit is used for television signals, and by means of adjustable components in circuits 1, 2 and 18, 19, may be tuned over both the U.H.F. and the V.H.F. ranges.
Patent GB-442719-A (GB)
Title: Improvements in or relating to welded joints, more particularly for thick-walled pipes and boiler-shell rings
IPC: F16L13/04
Filed: 1935-08-20
Abstract: 442,719. Welded pipe joints. HOFFSTADT, J., 12, Neugartenstrasse, Rattbor, Obersehlesien, Germany. Aug. 20, 1935, No. 23349. [Class 83 (iv)] [See also Group XXVIII] A welded joint in thick-walled pipes or boiler shell rings is made by trimming off the ends of the pipes &c. so as to leave a number of projecting bosses and then sliding over the ends a close fitting ring or muff having recesses to receive the bosses, the remaining portion of the recesses being closed by filling pieces. Grooves are turned in the ends of the pipes a and the intermediate projecting portion trimmed to form a series of bosses e. The ring portion f is formed with open-ended recesses g or h to slide over the bosses. In the first form the ring is slid on and then rotated so that the bosses e engage behind projections k on the ring. In the second form the portion h of the recess is of dovetailed form. When the ring is in position plugs l or l<1> are inserted in the remaining space and welding effected at m. The pipe ends may be butt welded or the ends may be spaced apart as shown in Fig. 3, in which case the ring may be T-shaped. The ring portion may be formed integral with one of the pipes.
Patent GB-715806-A (GB)
Title: Improvements in hydraulic control mechanism for roller grinding and like mills
Inventor: BALFOUR PETER STEPHEN ANDREW
IPC: B02C4/36
Filed: 1949-09-09
Abstract: 715,806. Roller and roller-and -breast mills. HOLMES BROS. PAINT MACHINERY. Ltd. Dec. 1. 1950 [Sept. 9 1949], No. 23413/49. Class 59 [Also in Group XXIX] A grinding mill of the roller or roller-andbreast type has the rollers or the breast loaded hydraulically by bellows or jacks, the hydraulic system being arranged to prevent pressure variation in the lines to the bellows or jacks owing to leakage or temperature or viscosity variations. Oil from a reservoir 6 is pumped by a gear pump 7 into a pressure chamber 8 fitted with a relief valve 13 and either an adjustable spring-bellows 9; for absorbing small variations in pressure, or with an external pneumatic accumulator. An independent power line for the bellows or jacks acting on each roller is connected to the chamber 8 and each line has a needle-type restrictor valve 12, pressure gauge and a spring-loaded pressure-selector valve 16 adjustable by a wheel 33 so that the pressure . in the lines can be independently varied, the valve 16 allowing excess fluid to return to the reservoir 6 through a duct 29. The tendency of multiple roller mills to open at the end on which differential gears are fitted may be overcome by fitting, at that end, a bellows with a greater spring-value or a slightly greater capacity or with a combination of greater spring- value and capacity. If the rollers are to be set with a small gap between them, adjustable micrometer stops are provided.
Patent GB-690950-A (GB)
Title: Improved apparatus for generating combustion products and conveying the heated products of combustion to a point of use
IPC: F23D14/00
Filed: 1950-09-25
Abstract: 690,950. Generating combustion products under pressure. BRZOZOWSKI, W. Sept. 25, 1950 [Sept. 23, 1949], No. 23462/50. Class 51(i) An apparatus for generating combustion products and delivering them to a point of use comprises a duct 10 within which a fuel-air mixture is burned, the duct having a supply section 11 for the fuel-air mixture, a combustion section 12 and a delivery conduit 13 of greater length than the combustion section, the three sections being disposed coaxially. Means such as a flame holder 15 is provided between the combustion and supply sections, and an opening is provided in the combustion section whereby surges of pressure downstream from the opening are relieved so that they do not extinguish the flame in the combustion section. In Fig. 1, the opening comprises a series of radial perforations 14, and the duct has a diffuser portion 18 downstream of the perforations whereby the velocity energy of the gases is converted into pressure. In Fig. 3, a muffle or expansion chamber 19 surrounds the double row of perforations 14a and has a relief valve 20 so that 'the relief of pressure is opposed by a pressure greater than atmospheric. The muffle chamber also incorporates a cylindrical flame arrester 22 to cool the gases passing therethrough. In Fig. 5 air or other diluting liquid is led into the expansion chamber through the pipe 23 and passes through the opening 14b to mix with the combustion gases in the duct. Surges of back-pressure are relieved through the opening 14A. In a further embodiment, a spray of water or inert gas or vapour is added to the combustion gases downstream of the opening 14b.
Patent GB-149993-A (GB)
Title: Improvements relating to windows for cellars, stables and so forth
IPC: E06B9/01
Filed: 1920-08-11
Abstract: 149,993. Leiner, L. Aug. 11, 1919, [Convention date]. Casements.-A window for a cellar, stables, &c. consists of a frame a secured to the wall and having an integrally formed or hinged perforated tinplate screen b and a hinged metal glazed frame d. The hinged frames open to the inside.
Patent GB-185422-A (GB)
Title: Improvements in and relating to holders for cleaning needles for vaporising burners or the like
IPC: F23D11/44
Filed: 1922-08-31
Abstract: 185,422. Bengtsson, B. J. Aug. 31, 1921, [Convention date]. Cleaning devices. - A needleholder for use in cleaning the nipples of vapour burners comprises two relatively movable members, one carrying the needle and the other a needleguide, and means independent of the needle for guiding the members during their movement. In the form shown in Figs. 1 and 4, the needle 12 is clamped in a groove between the twisted portion 4 of one shank 2 of a resilient V. shaped metal ribbon holder and a plate 9 secured to the shank 2 by a screw 10. The other shank 3 of the holder is formed with a cup-shaped swelling 14 adapted to be inserted in the nipple orifice 17. The swelling 14 is formed with a central hole 13 through which the needle passes when the shanks are pressed together. A tongue 6 on the shank 2 passes through a guide slot 7 in the shank 3 and prevents any lateral movement. The tongue 6 is formed with an enlarged lower edge 8, or is provided with a stop pin to prevent the shanks from moving too far apart. The portion 4 of the shank 2 is formed with a flange 5 against which the top of the needle abuts. A socket 16 containing spare needles is detachably secured to the curved junction portion 1 between the shanks 2, 3 by means of a nut 15, which acts as a socket cover. The Specification as open to inspection under Sect. 91 (3) (a) describes a holder shown in Figs. 1 and 3 (Cancelled) in which the shank 3 is formed on its underside with a cavity 20 which fits over the burner nipple 18, a semicircular extension 22 on the cavity wall acting as a guide to position the holder. The ends 24, 25 of the shanks 2, 3 are bent upwardly, the end 25 acting as a screen to prevent the flame reaching the operator's hand. A casing 16, Fig. 7, (Cancelled) having bent-over edges 26 and containing spare needles 12<1> is slidably or pivotally mounted on the shank 2. In a modification shown in Fig. 11, (Cancelled), the shanks 2, 3 are straight, and the cavity fitting over the burner nipple is formed by a hole 20<1> in a plate 19 secured to the lower side of the shank 3. A plate 21 fixed below the plate 19 acts as the guide to position the holder and an extension 23 of the plate 21 forms the flame screen. This subject-matter does not appear in the Specification as accepted.
Patent GB-1003218-A (GB)
Title: Production of phenolic resoles
IPC: C08G8/28
Filed: 1962-06-20
Abstract: In the production of liquid water-dilutable phenolic resoles, a phenol is reacted with a molar excess of an aldehyde at a pH of 7.0 to 11.5 at a temperature of at least 20 DEG C., e.g. 65 DEG  to 85 DEG  C., in the presence, as catalyst, of a mixture of 0.012 to 0.25 mol. of an inorganic base and 0.005 to 0.25 mol. of an organic base per mol. of phenol, and the reaction mixture is cooled while the product is still water-dilutable. In examples, phenol is reacted with formaldehyde in the presence of sodium hydroxide, lithium hydroxide, triethylamine, tetraethylammonium hydroxide and triethanolamine. Other starting materials and bases are mentioned.
Patent GB-1504053-A (GB)
Title: Apparatus for measuring spatial data from recorded images
IPC: G01B11/02
Filed: 1975-05-31
Abstract: 1504053 Photo-electric measurement of radiograph ROLLS-ROYCE Ltd 17 May 1976 [31 May 1975 15 July 1975] 23735/75 and 29575/75 Heading G1A [Also in Division H4] Apparatus for measuring distance between points on a radiograph of a turbine engine for example, comprises a camera mounted for viewing selectable areas of the radiograph, connected to a "video-micro densitometer" 22, Fig. 1. Unit 22 displays a video image on a screen 23 which has reference lines 27 and 29 permanently marked thereon. A curve 28 representing image density along line 27 is also displayed on the screen. The radiograph is mounted on a cartesian measuring framework so that any desired area may be brought into the camera's field of view. The framework includes a pair of tables translatable along respective orthogonal axes X and Y with a turntable 34 surrounding them. In use the radiograph is oriented on the framework so that the line joining points between which a distance is to be measured is parallel to one of the axes. In this way it is merely necessary to move the radiograph in the direction of this axis and monitor a displacement scale on the framework to determine the required distance. As visual determination of boundaries in a radiograph is only subjective an objective determination thereof is afforded by the curve 28. This is accomplished by moving the radiograph until a pre-decided (50%) grey level image density is coincident with line 29 on screen 23. The radiograph is illuminated from below by source 18. The measuring process is described in detail W.R.T. Figs. 2 and 3 (not shown). The framework with motor drives, magnetically recorded displacement monitoring strips, vernier scale on rotating table and table bearing arrangements is described W.R.T. Figs. 4 and 5 (not shown).
Patent GB-911056-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G13/00
Filed: 1961-06-30
Abstract: 911,056. Conveying ingots. SOC. ALSACIENNE DE CONSTRUCTIONS MECANIQUES. June 30, 1961 [July 4, 1960], No. 23756/61. Class 78 (1). Ingots 2, Fig. 3, are fed over conveyer rollers 1 and are centralized thereupon by flaps 3. Each flap 3 is pivoted at 4 and is under the influence of a fluid cylinder 5. When an ingot 2 diverges from its central course along the rollers 1 it strikes a flap 3 and causes an outward movement of the flap. This outward movement of the flap initiates the respective cylinder 5 to cause the latter to move the flap inwards. This movement presses the ingot back on to its central path. In a second embodiment, Fig. 4, flap 3 pivoted at 4 is normally urged rightwards by a spring 7 into contact with flexible stop 8. When the flap in this position is engaged by an ingot which is off course, the flap is pressed thereby back into the position 3a, due to the yielding of the stop. This movement of the flap to position 3a initiates the operation of cylinder 5 to cause the cylinder to move the flap forward into the position shown. This movement displaces the ingot back into its central path. When the cylinder reaches the. position shown, it becomes non-operative and permits the flap to be displaced by the spring 7 back into its normal position against stop 8. This permits the cylinder 5 to give a large push to the ingot whilst flap 3 suffers initially only a small movement.
Patent GB-599289-A (GB)
Title: Improvements in or relating to the preparation of therapeutic sera
IPC: A61K35/16
Filed: 1945-09-14
Abstract: Therapeutic sera for use in the treatment of cancer and other diseases are prepared by adding to normal serum an aqueous solution of thorium sulphate, incubating the mixture, removing the precipitate, adding to the residual liquor an aqueous solution of sodium nucleinate and again incubating, removing the precipitate, adding to the residual liquor an aqueous solution of either potassium chloride, sodium benzene sulphonate or sodium chloride, filtering, making isotonic and sterilizing.  Each aqueous solution is preferably a solution containing 0.5-1.5 per cent active material and the incubations are preferably for 23-25 hours at a temperature of 36.5-37.5 DEG  C.
Patent GB-1476476-A (GB)
Title: Facsimile system
IPC: H04N1/415
Filed: 1974-05-29
Abstract: 1476476 Data transmission; facsimile systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 May 1974 [1 June 1973] 23767/74 Heading H4P In a facsimile system, black/white picture elements as represented by binary values are compared in groups from at least two adjacent lines and for transmission are coded to produce for a group of all one binary level a first fixed coded signal (e.g. a 1) but when at least one level is different a second fixed coded signal (e.g. a 0) together with further binary signals representative of individual elements of the group. In one embodiment 6 picture elements from m = 3 lines and n = 2 columns form a group. A 3 line scanner 11 output is passed into flip-flops 21-23 which are gated through NAND's 24-26 into D flip-flops 27-29. Components 21-29 act as a parallel/serial converter, output being taken from flip-flop 27 (for n = 3 a further group of flip-flops will be needed) to NAND's 30, 32 to a memory 4 also receiving information through NAND's 31, 33. Scanner inputs are also applied through NAND 36 forming a comparator which if an all white group is detected gives a 0 hence flipflops 37, 38 also give 0 and hence through gates 30-33, 35 a clocking 1 pulse is provided on A20 which allows a 1 pulse on A19 into store 4. However if any black information is present in a group the circuit is reset and a series of clocking 1 pulses is presented on A20 which provides an initial 0 followed by six 0's and/or l's representative of the individual picture elements given on A19 for storing at and subsequent transmission to a receiver. At the receiver line start and end signals are derived from a store 10 in a manner not disclosed which are applied together with decoded signals to a display device 40. In an alternative arrangement (Fig. 6, not shown) a single line scanner (11-) is employed signals from which are clocked directly into a flip-flop (23) through one line delay into (22) and two line delay (21).
Patent GB-501535-A (GB)
Title: Improvements in or relating to television and like systems
IPC: H01J31/18
Filed: 1937-08-31
Abstract: 501,535. Cathode-ray tubes. BAIRD TELEVISION, Ltd., and NUTTALL, T: C. Aug. 31, 1937, No. 23787. [Classes 39 (i) and 40 (iii)] In a tube wherein an electrode 4 upon which an electrostatic image is reproduced by a scanning beam, controls a flooding electron beam to form a luminous image, the flooding beam is produced only during those times when the scanning beam is not incident upon the control electrode to produce charges thereon. In television systems, the scanning time may be reduced to 50 per cent of the line period to obtain a long line for the flooding beam. When the scanning beam is not in operation, other signals, e.g. corresponding to other images, may be transmitted and reproduced in further tubes more especially in colour and stereoscopic systems. The luminous images may be projected onto a screen. The image signals are supplied to the control grid 3 from an amplifier 2. The line frequency component of scanning is effected by means of an oscillator 5, from which pulses are supplied through a shaping circuit 6 to the electrode 3 to change the scanning beam into a flooding beam. Impulses may also be applied from the circuit 6 to the conducting core of the mosaic 4. Specifications 475,047 and 498,824 are referred to.
Patent GB-615825-A (GB)
Title: Improvements in or relating to snap fastener sockets
IPC: A44B17/00
Filed: 1946-08-12
Abstract: 615,825. Stud-and-socket fastenings. SOC. D'ETUDES ET DE RECHERCHES TECHNIQUES ET INDUSTRIELLES S.E.R.T.I. Aug. 12, 1946, No. 23879. Convention date, March 1, 1941. [Class 44] A snap fastener socket for securing a cloth is attached by means of prongs provided on a ring member on the opposite side of the cloth which prongs are deformed when the parts are forced into engagement by a curved annular bending surface on the socket part. The stud engaging spring is substantially flat and located by the socket part. The socket, of the form shown in section in Fig. 1, comprises an annular member A with a conical upper face 1 and a central portion 2 dished to form an abutment 3 for the spring 4 which comprises a split ring. A lower member B has a dished central portion 5 to support the spring and the edge is turned around the edge of the member A. The depending prongs 8 of the ring are pressed through the cloth and into the locking chamber formed between the edges of parts A and B. In a modification the part A is dispensed with, the part B providing an annular groove to locate the spring. In the form of Fig. 4, the spring has two parallel limbs 4<1> and is secured between the rim of the part B and lugs 11<1> upstanding from the bottom. In a modification, the spring is formed with an arcuate part engaging the rim, the ends being connected by S-bends to straight parallel stud engaging limbs guided by upstanding T-shaped lugs from the bottom of part B. These lugs may comprise the material pressed out of the central aperture. In another form, Fig. 5, the spring comprises a complete circle located by the rim of the bottom part B, and a parallel sided loop 4<1> located by a depending tubular portion 3 on the upper part A.
Patent GB-956919-A (GB)
Title: Planetary driven winch
Inventor: MAGNUSON JOHN EDWIN
IPC: B66D1/22
Filed: 1962-06-21
Abstract: 956,919. Epicyclic gearing. PACIFIC CAR & FOUNDRY CO. June 21, 1962, No. 23893/62. Headings F2D and F2Q. [Also in Division B8] A winch drum 5 is driven from an input shaft 48 through bevel gearing 46, 47, a reversing three-element planet gear 42, 43, 44 driving an axial shaft 28 connected to the drum 5 by a compound epicyclic reduction gear comprising a central three-element planet gear 40 - - mounted between identical three-element spur gears 22 - -, 23 - - in parallel. The central gear comprises a sun pinion 40, planets 38, planet carrier 37, and annulus 14, while the outer gears comprise sun pinions 22, 23, pinions 16, 17, fixed carriers 12, 13, and annuli 20, 21, the central annulus 14 being connected to the carriers 12, 13, the outer carriers 20, 21 being connected to the drum 5 and the carrier 37 being splined to the outer sun pinions 22, 23. The reversing gear is controlled by a dog-clutch 62, 63 operated by a shift-lever 65. For forward drive the clutch is moved to the right to lock the planet carrier 41 and annulus 44 for direct drive of shaft 28 by bevel pinion 47, while for reverse it is moved to the left so that carrier 41 is locked to the fixed carrier 13. In the neutral position shown a gypsy spool 52<SP>1</SP> may be driven directly from the input shaft 48. The drum shaft 28 carries a one-way acting brake 30, 31.
Patent GB-498066-A (GB)
Title: Improvements in the manufacture and production of gas purifying masses
IPC: C10K1/20
Filed: 1937-09-01
Abstract: 498,066. Gas-purifying compositions; revivifying. JOHNSON. G. W. (I. G. Farbenindustrie Akt.-Ges.) Sept. 1, 1937, No. 23939. [Class 55 (ii)] Porous gas-purifying masses are formed by mixing heavy metal oxides capable of combining with sulphur, e.g. iron oxide, with hydraulic binding-agents such as cement, water and incombustible fibrous material capable of swelling in the presence of water, and then allowing the mass to solidify while setting. The fibrous material may be asbestos, asbestine, wool, wood, hemp, or other fibres which have been rendered incombustible by impregnation with magnesium chloride and waterglass. The mass is formed into small thick-walled hollow cylinders, and may be washed with carbon disulphide and then steamed, or treated with hot air, when revivified.
Patent GB-866469-A (GB)
Title: Improvements in or relating to electrical attenuator circuits
IPC: H03H7/24
Filed: 1959-07-13
Abstract: 866,469. Resistance networks. RIBET ET DESJARDINS. July 13, 1959 [July 24, 1958], No. 23999/59. Class 40(8) A four terminal resistance network comprises two attenuators having variable tappings, arranged in cascade, the first having higher attenuation ratios than the second and the second consisting of a number of voltage dividers arranged between insulated tapping points and earth. The first attenuator, Fig. 2, is of known constant-impedance type and consists of equal series resistors 1 and equal shunt resistors 2 arranged between terminal resistors 3. Geometrically decreasing fractions of the voltage of source 5 can be derived from successive tapping points 6 and fed through a cable 7 to the second attenuator, Fig. 3. This consists of pairs 14, 15 of resistors arranged as voltage dividers with insulated input tapping points 16 and output tapping points 17. If the desired attenuation factor of a pair of resistors is K, the resistors are given values R 14 =R(K-1) and R 15 =RK/(K-1) where R is the impedence of the first attenuator. The first pair of resistors give zero attenuation and have values respectively of zero and infinity. The attenuation increment of the first attenuator may be 10 db. and that of the second 2 db.