baber/WOPTO huggingface dataset:
Patent GB-252219-A (GB)
Title: Improvements in locomotive valve gear
IPC: F01L31/16
Filed: 1925-01-22
Abstract: 252,219. Lentz Parents, Ltd., (Kupka, J.). Jan. 22, 1925. Eccentrics. - A variable throw eccentric consists of a sheave 28 having two slots at right angles. The sheave is movable on a block 27, which engages one of the slots. The adjustment is effected by a pin 32 engaging the other slot 31. The pin 32 is carried by a disc 33 movable on a quick thread on the shaft 16 by means of rods 26.
Patent GB-812933-A (GB)
Title: Improvements in or relating to multiple-contact, two-part electric couplings
Inventor: HARTHMAN FRANCIS PETER
IPC: H01R43/24
Filed: 1956-01-20
Abstract: 812,933. Embedding electrical conductors. BRITISH INSULATED CALLENDER'S CABLES Ltd. Jan. 21, 1957 [Jan. 20, 1956], No. 2057/56. Class 87(2). [Also in Group XXXVI] A multi-contact coupling part is made by positioning the contacts in an insulating disc 30 and holding them by removable plates 35, 36 and 37 the cable conductors 2 being first soldered to the contacts and the cable screen 3 being clamped between rings 5 and 6 and placing the assembly in a split mould, one half 39 of which is shown in Fig. 3 and pouring insulating material, e.g. a synthetic resin, through passage 47. The disc 30 and the mould may be of the same resin preferably of the unsaturated polyester or epoxy type. The disc 30 provides a shroud 13 for the contacts which may have an apertured reinforcing metal ring 60 embedded in it, a threaded sleeve 25 co-operating with the other coupling part (not shown). Sealing rings 22, 17 are provided and an outer casing 26 encloses a rubber muff 28. A part having socket contacts may also be made by the same method, Fig. 4 (not shown). Specification 715,649 is referred to.
Patent GB-915938-A (GB)
Title: Device for automatically changing shuttles in weaving looms
IPC: D03D45/34
Filed: 1959-01-20
Abstract: 915,938. Automatic shuttle changing mechanism. DURBUY, A. F. Jan. 20, 1959 [Jan. 20, 1958; Jan. 14, 1959], No. 2072/59. Class 142 (2). In a loom having a drop box at each end, the box at the shuttle-changing end has an extra cell 110 which is brought level with the shuttle race during weft replenishment to receive the empty shuttle; the uppermost normal cell 107 is then above a fixed back wall 111, common to all the normal cells, and receives a fresh shuttle 106. When the box next drops to its lowest position, the swell 124 of the extra cell is withdrawn by a cam 125 to allow the empty shuttle to fall out. A cop feeler operates in the top cell of the box at the opposite end of the loom to the replenishing mechanism and, on detection of a depleted shuttle, causes pawls in the dobby to come into the range of levers acted on by the pattern lags, whereby the drop box at the replenishing end is raised to the position shown, and a dagger is brought into line with a dog on the slay. Other lags operate levers in the dobby which have lost-motion connections (of different amount for each weft colour) with a linkage which selects a shuttle from the appropriate column of the magazine C; the actual release of the shuttle to permit it to fall on to a platform 84 is effected by the dog on the slay striking the above-mentioned dagger. The dagger also rocks a shaft 98 to bring a pawl 94 into the path of a beak 92 which is continuously oscillated by the slay 100 through levers 102, 101; the pawl 94 is carried by a lever 93, 90 which acts through a link 89 and pusher 85 to insert the shuttle 106 into the top cell 107.
Patent GB-1254412-A (GB)
Title: Improvements relating to rotary-piston internal combustion engines
IPC: F02B53/06
Filed: 1970-01-16
Abstract: 1,254,412. Botary-piston internal combustion engines. DAIMLER-BENZ A.G. Jan.16, 1970 [Jan. 18, 1969], No.2258/70. Heading F1F. To improve mixture formation in a rotarypiston I.C. engine particularly but not exclusively of epitrochoidal design when the engine is idling  or running under low load conditions, one or more orifices open into an air or air/fuel mixture admission passage immediately downstream of its throttle valve when the valve is in its engineidling position. In one embodiment, orifices 9, 10, Fig. 1, communicate respectively with an idling duct 7 which by-passes the throttle valve 3 and a transfer duct 8 connected to the compression space of the engine working chamber. In another embodiment, Fig.2, the duct 8 opens into the duct 7 and air in the duct 7 mixes with air/fuel mixture in the duct 8 prior to passing into the passage 2 through a single orifice 13 substantially parallel to the downstream face of the throttle valve 3. In both embodiments, air and/or air/fuel mixture is injected substantially at right angles into the high velocity air passing through the crescentshaped openings 6 between the valve 3 and the wall 5 of the passage 2 to cause turbulence and thorough mixing with the fuel injected into the passage through a nozzle 14.
Patent GB-951391-A (GB)
Title: Improvements in or relating to protective coating processes
Inventor: HENDERSON ANDREW WILLIAM
IPC: B05D3/02
Filed: 1962-01-23
Abstract: A coating of a thermosetting material on an electrical component is cured by immersion in a bath of heated liquid.  The heated liquid may be water, oil, a silicone, molten wax, molten polythene or molten metal.  It may form an additional coating on the component.  The original coating may also be applied by dipping.
Patent GB-981945-A (GB)
Title: Vibration dampers
IPC: F16F15/123
Filed: 1963-01-18
Abstract: 981,945. Resilient couplings. BORGWARNER CORPORATION. Jan. 18, 1963 [Feb. 12, 1962], No. 2365/63. Heading F2U. A vibration damper comprises a radially flanged hub in resilient torque transmitting connection with a first annular member which is in resilient torque transmitting connection with a second annular member. A splined hub 1, of a clutch centre plate, has a radial flange 3, on each side of which are washers 20, 21: the washers and the flange having two rows of substantially rectangular openings 25, 23 to receive helical torque transmitting springs 26. A clutch plate 4, rotationally mounted on the hub 1, is similarly connected to a pair of washers 8, 9, the washer 9 being riveted at 30 to the washer 21. Torsional vibration is thus damped by the two sets of springs 14, 26 in series, the movement being limited by slugs 31 inverted in the springs abutting spring seats 16 bearing on the ends of the rectangular apertures. In a second embodiment, of a vibration damper, a common intermediate washer is used and movement is limited by the spacing rivets for the washers contacting slots in the clutch plate and hub flange. Additional friction damping may be provided by a wavy washer spring between the clutch plate and the hub flange. In a third embodiment the clutch plate is mounted concentrically on the hub flange and the washers serve to transmit torque to both members through two concentric sets of springs.
Patent GB-657646-A (GB)
Title: Improvements in or relating to metal drawing presses
IPC: B21D24/04
Filed: 1949-01-28
Abstract: 657,646. Cupping. STEVENS, A. H. (Clearing Machine Corporation). Jan. 28, 1949, No. 2404. [Class 83 (iv)] The blank-holding ring 7 of a metal-drawing press is connected to its slide 1 by a number of separately operated adjusting members 9. These may each have one end adjustably received in the slide and the other end universally jointed to the ring. As shown, the members 9 are screwed into nuts 14 mounted in sockets 17 in the usual blank-holder slide 1 with its adjusting screws 11. The screws 16 are locked by nuts 18 after adjustment. The lower ends have ball joints 20 with a ring 8 carrying the ring 7. After this has been fixed in adjusted position ball-jointed blocks 33 carried by similar screws 29 are brought down to engage and support the ring 8 at points between the joints 20. Specification 657,647 is referred to.
Patent GB-870487-A (GB)
Title: Flaw detecting device
Inventor: HARMON WILLIAM CLAIR
IPC: G01N27/90
Filed: 1958-01-24
Abstract: 870,487. Electric tests. REPUBLIC STEEL CORPORATION. Jan. 24, 1958, No. 2413/58. Class 37. In a flaw detector of the type in which a coilforming part of an oscillator tank circuit is moved over the material under test an amplifier fed from the oscillator output provides a feedback signal to the oscillator through a circuit of time constant sufficiently long to ignore small variations to maintain the oscillator amplitude constant and at the same time to provide an indication of flaw depth. As shown, the search unit 10 is moved over the object under test and includes a coil 16 forming part of the tuning circuit of an oscillator and a neon lamp which glows when flaws of more than a certain depth are detected. The unit 11 is carried by the operator and comprises the circuitry shown in and described with reference to Figs. 4 and 5 and a meter in the top of the unit which indicates flaw depth. Circuits (Figs. 4 and 5).-Search coil 16 forms with capacitor 49 the tuned circuit of an oscillator comprising triodes V1, V2. The setting of potentiometer 58 feeding the grid of feed-back triode V2 determines the initial amplitude of the oscillations. The oscillator output is fed to cathode follower V3 and high-frequency (oscillator frequency) amplifier V4. The output of the high-frequency amplifier V4 is fed through transformer 82 to full-wave rectifier V5. The high-frequency components are removed by filter circuit 87 and the low-frequency signal remaining is representative of the variation in amplitude level of the oscillations. Part of the signal is tapped from potentiometer 91 and fed through a circuit 63, 60, 62 whose time constant is such that amplitude variations of relatively low duration are ignored, to the grid of tube V2 to maintain the oscillation amplitude constant. At the same time the demodulated signal is fed through clamp V7 which ensures that only positive impulses are applied to low-frequency amplifier V8 and from there to a further amplifier V10, a clamp V9 being provided so that only negative impulses are applied to potentiometer 114. This potentiometer controls the amplitude of the pulses applied to amplifier V10 which supplies neon 27 in the search head so that a flaw of greater than a particular depth causes the neon to light. The negative impulses from clamp circuit 30 are also fed through potentiometer 130, the setting of which controls the amplitude on the signals reaching meter 14 which indicates flaw depth. The signals are amplified at V11, fed through transformer 137 to a rectifier comprising diodeconnected triode V12, through long time constant circuit 148 to produce a relatively steady bias and the grid of cathode follower V13. The output of the cathode follower actuates the flaw depth meter 14, the arrangement being that the cathode current moves the meter to the full scale reading but is reduced by the measuring voltage. Specification 727,217 is referred to.
Patent GB-719181-A (GB)
Title: Improvements in or relating to typewriting aids
IPC: B41J13/24
Filed: 1953-01-28
Abstract: 719,181. Cards &c. in web form. WOOD, M. E. May 18, 1953 [Jan. 28, 1953], No. 2459/53. Classes 16 and 146(2) A web for use in typing on small cards, tickets or the like, has a sequence of cards or tickets removably mounted thereon at intervals and is adapted to be folded alternately backwards and forwards between the card spaces to form a stack. As shown in Fig. 1, a web 1 is divided by perforations 2 into card holding sections 3 each having diagonal slits 5 to hold the corners of a card 4. As shown in Fig. 4, the cards 4 are held by flaps 6 cut from the material of the web and strips 7 are gummed on the rear side (as shown, to form pockets for the edges of the cards. A series of cards may be spaced transversely of the web and longitudinal lines of perforations may be provided between them. Longitudinal lines a and transverse lines b may be . provided to pass through the centre of the card space. to facilitate typing. In a modification (not shown), the slits 5 are curved and a series of them are provided radiating from the card space centre so as to take different size cards.
Patent GB-266314-A (GB)
Title: Improvements in machine tools more particularly machines for polishing crank shafts
IPC: B24B5/42
Filed: 1927-01-28
Abstract: 266,314. Loewe & Co., Akt.-Ges., L. Feb. 18, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Rollers, spindles, rods and the like, treating.- In a machine for polishing crank shafts, &c. in which the work a is driven through gearing f at both ends from a shaft c, the shaft c is driven at the centre i of its length between the gears f. Where a turntable is employed, the drive for the shaft e is arranged in the axis of rotation of the table.
Patent GB-1381887-A (GB)
Title: Pipe connections for fuel torches
IPC: F16L37/56
Filed: 1972-01-19
Abstract: 1381887 Pipe couplings MESSER GRIESHEIM GmbH 19 Jan 1972 [19 Jan 1971] 2541/72 Heading F2G In order to facilitate changing multiple connections, in machine gas torches such as mechanical cutting, preheating or mechanized flame scarfing torches (Figs. 1,3, not shown), gas supply and cooling water circulating hoses are arranged to terminate in a common block 16 which mates with a block 18 of the torch, so that quick release fastenings can be operated to enable the blocks 18 to be released, when replacing a worn torch head (2). The replacement torch has a hasp 40 and an over-centre lever 38 to secure the blocks 16 and 18 together. Alternatively, a bayonet fastening may be used. A valve (Fig. 5, not shown) operated automatically by connection and disconnection of the coupling may be provided in each gas or water line.
Patent GB-572827-A (GB)
Title: The preparation of copolymers from substituted acrylonitriles and 1-3 butadiene or derivatives thereof
IPC: C08F236/16
Filed: 1942-02-26
Abstract: A synthetic rubber-like mass is prepared by copolymerization of acrylonitriles substituted in the alpha position by an alkoxy group with 1,3-butadiene or chloro or methyl derivatives thereof. Polymerization is preferably effected by heating the monomers to a temperature between 25 DEG  and 80 DEG  C. in aqueous emulsion in the presence of an oxidizing polymerization catalyst such as sodium perborate or benzoyl peroxide.  Suitable substitute acrylonitriles are alpha methoxy acrylonitrile, alpha ethoxy acrylonitrile, alpha propoxy acrylonitrile, alpha n-butoxy acrylonitrile, alpha isobutoxy acrylonitrile and suitable derivatives of 1,3-butadiene are isoprene; 2,3-dimethyl butadiene-1,3; 2-chloro butadiene-1,3; and 2-3-dichloro butadiene-1,3.  Example 1 describes the preparation of copolymers from mixtures containing 60 per cent by weight of 1,3-butadiene and 40 per cent of alpha ethoxy acrylonitrile, alpha methoxy acrylonitrile, or alpha n-butoxy acrylonitrile at various pH values adjusted by addition of McIlvaine type phosphate-citrate buffers. The reaction mixture also contains sodium lauryl sulphate, carbontetrachloride, sodium cyanide solution, acetaldehyde and sodium perborate. Polymerization is effected in a closed bomb at 38 DEG  C. An example is also given of curing a compounded mixture containing the copolymer of alpha ethoxy acrylonitrile and 1,3-butadiene, together with sulphur, stearic acid, benzothiazyl diethyl sulfenamide and carbon black.  U.S.A. Specification 2,326,373 is referred to.
Patent GB-465373-A (GB)
Title: A new or improved method of and apparatus for producing "gas caps" in miners' safety lamps for demonstration and examination purposes
IPC: F21L23/00
Filed: 1936-01-29
Abstract: 465,373. Gas caps in miners' safety lamps. MANCHESTER COLLIERIES, Ltd., and EDWARDS, G. Jan. 29, 1936, No. 2621. [Class 75 (iv)] Gas caps are produced in a miners' safety lamp for demonstration and like purposes by burning the lamp in a cap-forming atmosphere within an inspection chamber, the convection currents set up by the lamp drawing into the chamber further air which draws in the inflammable vapour to create the cap-forming atmosphere. The lamp e stands on a bush d<1> surrounding a central orifice d in the floor of an observation chamber a<1> having one or more glass windows c, the lamp being held in position by a self-sealing sheet rubber flap g and a clamping ring g<1>. The windows c are provided with slots o to receive one or more apertured members p each carrying a flexible inspection hood q having a strap q<1> for attachment to the face of the user. Blank shutters may be provided for the unused windows. The chamber a<1> is separated by a partition b from a compartment a<2> housing a container h for volatile hydrocarbon. The container h is connected to an annular member i, around which the middle of the wick j passes, and which is screwed on to a boss l carried by the partition b. Screwed into the outer end of the member i is an open-ended tube k, the inner end of which forms a valve to engage a seating on the boss l. Air entering the tube k passes through a shield bl to the bottom of the lamp chamber a<1>. The tube k is provided with an operating disc k<1> and with. a flanged extension k<2> to form a gas-tight joint. The disc k<1> may be marked with a pointer to co-operate with a scale m surrounding the flange k<2>, whereby definite percentages of gas may be indicated. A bridge member n prevents the entry of any large obstruction. The amount of hydrocarbon drawn in by the air is controlled by the exposure of the wick according to the adjustment of the valve by the disc k<1>. According to the Provisional Specification, the walls of the inspection chamber may be opaque and one of them fitted with lenses or binocular openings for observation of the flame.
Patent GB-1413254-A (GB)
Title: Method of producing alumina
IPC: C01F7/021
Filed: 1973-01-19
Abstract: 1413254 Alumina CONTINENTAL OIL CO 19 Jan 1973 [19 Jan 1972] 2850/73 Heading C1A An aqueous alumina "slurry' (including alumina/water mixtures with the consistency of a wet sand cake), is dried by contacting with the vapour of an alcohol containing 2-8 carbon atoms, whereby alumina having a pore volume at least 1À0 c.c./g. a loose bulk density less than 35 lb./ft.<SP>3</SP> and a surface area of at least 260 m.<SP>2</SP>/g. is produced. The slurry may contain less than 32% by weight of Al 2 O 3  and the product may contain at least 50% by weight of Al 2 O 3 . The average pore diameter may be 80-258  and preferably at least 50% of the pore volume is constituted by pores of diameter <1000 . The product alumina may be treated with superheated steam and the slurry may be prepared by the hydrolysis of an aluminium alkoxide.
Patent GB-1369209-A (GB)
Title: Guitar abacus
IPC: G10G1/02
Filed: 1972-01-19
Abstract: 1369209 Note indicator L NEILL 19 Jan 1972 [22 Jan 1971] 2958/71 Heading G5X A stringed instrument tutor, intended for the guitar and like fretted instruments comprises a base member 1, hinged into two parts 2 and 3, part 2 having a series of longitudinal slots 8 representing the strings, and printed thereon fret positions 7 and the note notation related to each finger position. Studs 11, which are slidable along slots 8, are provided to set up the fingering of a chord or note sequence, each note having its position on the musical stave indicated on part 3. Two further slots 14 and 15 indicate the barrÚ position and the general finger position on the fret board to which the music relates. In a further embodiment, the fret positions are provided with slots 20, Fig. 3 (not shown), and a number of studs 11, Fig. 3 (not shown) are provided for each slot 20. Further possible embodiments include coloured studs, a bar across slots 8 to indicate a barrÚ position and means to adhere the studs to include static electricity or magnetic attraction.
Patent GB-1186653-A (GB)
Title: Improvements in or relating to Paper Fasteners
Inventor: DREUX ALEXANDRE
IPC: B42F13/02
Filed: 1968-01-19
Abstract: 1,186,653. Filing papers. A. DREUX. 19 Jan., 1968 [30 Jan., 1967], No. 3093/68. Heading B6E. A sheet filing device comprises a base-plate 1, Fig. 6a having two pairs of tongues 2 for reception of the ends of flexible, tubular filing prongs 3, which are passed through the perforations in the sheets to be filed and apertures 6b in a locking follower 8 provided with a pair of tongues 6c serving for the retention of the ends 11 of the prongs 3. In a modification the base-plate 4, Fig. 3a, may have a pair of outwardly projecting tongues 4a on which are mounted the flexible, tubular prongs 3. In a further modification the base-plate may be split into two parts 5, Fig. 4a, each having a lateral tongue 5a and an aperture 5b, whereby the base-plate may also be used as a locking follower.
Patent GB-829159-A (GB)
Title: Improvements in or relating to portable radiation dosimeters
Inventor: BURNETT DONALD FENN
IPC: H01J47/04
Filed: 1958-01-30
Abstract: 829,159. Electroscopy. RANK PRECISION INDUSTRIES Ltd. Jan. 30, 1958, No. 3133/58. Class 37. A dosimeter for ionizing radiation comprises a shouldered conducting cylindrical outer envelope 1 enclosing an ionization chamber having a major cavity 6 and a minor cavity 5 defined by the shoulders of the envelope, and an inner conducting cylindrical core 3 mounted on insulated annular plug 4 to project within the chamber. In a recess 7, of minor cavity 5 a U-shaped quartz fibre which has been made conducting is mounted on metal pillars of core 3 so that the fibre is visible through microscope 11 against scale 10, and when the core and fibre are charged in known manner, the deflection produced by shaped core wall 9 is measurable, so that the dosage of incident radiation in a given time is determinable by the corresponding decrease of deflection due to ionization of the major cavity and consequent discharge. Errors due to photoemission arising from incident radiation falling on materials of high atomic number necessarily used for mounting the quartz fibre are reduced, since the major cavity in which ionization takes place is screened therefrom by the core material ; the minor cavity representing a negligible proportion of the overall ionization chamber.
Patent GB-708678-A (GB)
Title: Improved conveyor for use in inclined workings
IPC: B65G19/28
Filed: 1952-02-06
Abstract: 708,678. Endless-chain conveyers. GEWERKSCHAFT EISENHUTTE WESTFALIA. Feb. 6, 1952 [March 13, 1951], No. 3160/52. Class 78 (1) In. a conveyer for use in inclined workings of the kind having a single positively-guided chain 15 carrying conveying discs 12, the trough is so supported by wedge-shaped frames 21, 22 that the forward run 10 is sufficiently strengthened to serve as a guide for a coal-getting machine 24 and the return run 11 is raised from the ground so that stowage material carried thereby can be delivered from a height by swinging downwardly a part of the side wall 28 about a pivot 29. The discs 12 are hinged by pins 13 to links 14 of the chain 15. The chain slides in guides 16, 17 which are held together by screws 18. An inverted V member 20 welded to the guide 16 increases the capacity of the trough and acts as a support for members 26 projecting from the machine 24.