baber/WOPTO huggingface dataset:
Patent GB-264954-A (GB)
Title: Improvements in or relating to devices for interrupting an electric current
IPC: H01R33/95
Filed: 1925-11-10
Abstract: 264,954. Tennant, W. J., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Nov. 10, 1925. Contacts for thermal interrupters, particularly for lamps, are made, one of nickel and the other of chrome-iron (for example, 15-35 per cent of chromium and 85-65 per cent of iron), with or without admixtures of manganese, nickel, cobalt, carbon, and silicon, the object being to prevent welding together of the contacts.
Patent GB-1427968-A (GB)
Title: Production of silicon nitride bodies
IPC: C04B35/591
Filed: 1973-06-15
Abstract: 1427968 Silicon nitride bodies NORTON CO 15 June 1973 [16 June 1972] 28538/73 Heading C1A [Also in Division C7] The invention comprises a shaped isotropic body of Si 3 N 4  having a density greater than 2À4 g./o.c., e.g. up to 2À45 g./c.c., a transverse rupture strength greater than 40,000 p.s.i., e.g. up to 50,000 p.s.i., a pore size of less than 2Á and an α/# Si 3 N 4  ratio of greater than 2, e.g. up to 7À15. The shaped body is prepared by compressing Si powder of particle size less than or equal to 10 Á into a green body having a density of at least 1À4 g./c.c., e.g. up to 1À56 g./c.c., sintering, e.g. at 1100‹ C. in Ar and then nitriding the sintered body, e.g. at 1350- 1450‹ C. in N 2 /NH 3 . The Si powder may have an average diameter of 2 Á and contain Fe, Al or Ca in an amount totalling 1%. The transverse ruptive strength of the sintered body may be greater than 1000 p.s.i.
Patent GB-748758-A (GB)
Title: Improvements relating to rotary potato-harvesting reels
IPC: A01D19/06
Filed: 1951-12-07
Abstract: 748,758. Potato harvesters. BONELLA, A. G. Aug. 10, 1953 [Dec. 7, 1951], No. 28704/51. Class 6 (3). A rotary potato-harvesting reel comprises peripherally spaced series of prongs 2 mounted on a fore and aft rotary hub 1 and a member 4 located adjacent to each series of prongs and rotated therewith to engage, lift and hold the drill contacts prior to engagement by the adjacent series of prongs. As shown, each member 4 is L-shaped and is provided with two fingers 7, 7A. The prongs are cranked midway of their length and the hub may be power driven from the take-off shaft of a tractor. A screen may be provided to collect any potatoes which may have passed through the reel. Specifications 583,865 and 655,815 are referred to.
Patent GB-157610-A (GB)
Title: Improvements in or relating to guides for filing cabinets, drawers, sorting trays and the like
IPC: B42F17/02
Filed: 1919-11-19
Abstract: 157,610. Ulrich, C. B. Nov. 19, 1919. Clamping-devices; racks and the like. - Compression guides for filing-cabinets, drawers, trays, &c., of the kind comprising self-expanding hinged sheets of cardboard &c. which are placed in the receptacle with the hinge uppermost and retain the documents filed in a substantially upright position, are made with the back sheets b hinged to the front sheets a by tapes c or the like along a line parallel with but at some distance below the upper edge of the front sheet, springs d being located as usual between the two sheets. In a modification the front and back sheets are formed from a single sheet doubled over and cemented near the middle. The sheets may be provided with holes f to secure the guides upon a rod against rising in the receptacle. The front sheet may be formed with an indicating-tab. A series of such guides may be hinged together at adjacent lower edges by flexible tapes.
Patent GB-323774-A (GB)
Title: Improvements in or relating to coin-operated vending machines
IPC: G07F13/00
Filed: 1928-10-08
Abstract: 323,774. Ormiston, P. L. Oct. 8, 1928. Coin action, mechanical-connection. - In a coin-operated vending machine for delivering articles, having a spring motor for actuating the delivery mechanism, the spring motor is wound hy means co-acting with a coin carried by a lever on the winding arbor of the motor. A cranked handle 90, Fig. 9, wording between stops 91, 92 is manually operated to wind the motor. An arm 93 connected thereto has a pin 98 which engages a coin carried by a lever 66 on the arbor 38 of the motor. The coin is received in jaws 78, Fig. 12, and rests on a shoulder 82. The shaft 88 of the handle is offset from the spindle 38 so that the pin 98 slips down from the coin and transfers its pressure to the face 87 of the lever 66, the coin then dropping over a plate 100 to the money-box. The lever 66 has a pawl which over-rides a ratchet wheel 43 on the arbor 38 so that when the motor is wound and the handle 90 released, the ratchet wheel 43 will drive the lever 66. A bevel gear 41 integral with the ratchet wheel drives a pinion, the vertical shaft of which carries an arm 50 connected through a link 51 to a toothed segment 52. The segment rotates a pinion 56 to actuate the delivery mechanism. Delivery of articles stored in bulk. - The articles are stored in a chamber and roll down an inclined bottom to a shoot 141, Fig. 10, coutaining the articles 132 in single file. An agitator 142 normally closes the top of the shoot, the agitator being reciprocated by a rod 148 attached to the crank 93. The articles are passed one at a time bv a trip 151 hinged at 152 and having an upturned gate 153. A second bar 156 has an upturned gate 158, the gates 153. 158 being actuated as an escapement by a rod 162 connected to the segment 52. The article released by the gates passes through a door opened by the left hand of a mannikin 117, Fig. 3, to a scoop 103 carried by its right hand. The mannikin is rotated to open the door and present the scoop. then to return, closing the door, and delivering the article to a delivery shoot 122, by being connected to a tube carried by the pinion 56.
Patent GB-840450-A (GB)
Title: Improvements in or relating to grass cutting machines
Inventor: ANDREWS ROBERT WILLIAM
IPC: A01D34/84
Filed: 1957-09-13
Abstract: 840,450. Lawn edge-trimmers. ANDREWS Ltd., R. H. Dec. 12, 1958 [Sept. 13, 1957], No. 28899/57. Class 6(2). An edge-trimmer comprises a rotary blade 5 having two scimitar-shaped arms, mounted on the crank shaft 6 of an internal combustion engine 1, and co-operating with a fixed guide plate 10 which is bent at each end 12 and 12<SP>1</SP> to protect the blade from hitting obstructions. As a further protection, the blade is driven by friction plates 14 mounted on the crankshaft 6, as opposed to being in direct driving connection with the shaft. The engine is supported on a frame 2 having front and rear rollers 3 and a handle 4, the engine being tilted slightly so that the crankshaft 6 is inclined to the horizontal. The boss 8 of the blade is provided with a squared end to act as a power take-off connection for such implements as hedgecutters, driven through a flexible drive.
Patent GB-504357-A (GB)
Title: Improvements in or relating to sliding clasp fasteners
IPC: A44B19/38
Filed: 1937-10-22
Abstract: 504,357. Sliding- - clasp fastenings. LIGHTNING FASTENERS, Ltd. (Carlile, A. E.) Oct. 22, 1937, No. 28928. [Class. 44] A sliding-clasp fastener of the completely separable type has means on one of the members of the completely separable end-fitting for cooperating with the slider to retain the latter in position. For instance the slider 13 has recesses 16 on-the inner faces of its top and bottom plates 14, 15 into which can enter projections 22 formed on an upwardly extending portion 21 of the socket member 20. With the slider so retained in accurate position the removal and insertion of the pin member 23 of the completely separable end fitting is facilitated. The edge of the slider is bevelled at 25 to ensure-alignment of the projections 22 and recesses 16. The slider plates are slightly resilient.
Patent GB-172478-A (GB)
Title: Improvements in stuffing boxes
IPC: F16J15/18
Filed: 1920-10-14
Abstract: 172,478. Barratt, S. H. H. Oct. 14, 1920. Packing, removable casings for; glands; bushes. -Non-metallic or metallic packing 9, for the piston-rod or valve-rod of a locomotive or other engine, is contained in a casing 7 which is capable of universal movement inside the stuffing-box 1. The casing 7 is formed in halves secured together by rings 8 and is provided with a screwed gland 10 also formed in halves secured together by a ring 11. The casing 7 is pressed axially by a spring 13 engaging a neck on one end of the casing 7 and a neck on a bush 14 secured in the bottom of the stuffing-box. The forward end of the casing 7 is bevelled and engages a curved surface on a bush 4 inserted in the opening in the stuffing-box cover 2. Alternatively, the end of the casing 7 may be curved and the bush 4 bevelled. The bush 4 is formed in halves secured together by a ring 5. The gland 10 may project beyond the cover 2 to permit adjustment of the packing without removing the cover, or may be flush with the cover. Rotation of the gland 10 is prevented by a catch 20 which is held in one of several recesses in the gland by a spring.
Patent GB-1118292-A (GB)
Title: Improvements relating to woven fabrics
Inventor: SUMNER PHILIP
IPC: D03D5/00
Filed: 1967-08-11
Abstract: Warpwise stripes of yarn having a core of polyurethane elastomer are included in a woven fabric, particularly at one or both edges to form waistbands or wristbands or wristbands garments cut from the fabric.
Patent GB-226660-A (GB)
Title: Improvements in the method of and means for beaming warps
IPC: D02H13/16
Filed: 1923-11-19
Abstract: 226,660. Bailey, A. C., and Wilkinson, W. T. Nov. 19, 1923. Yarns, warping and beaming. - In beaming warps containing threads which vary in character, such as worsted or other elastic threads a and silk or cotton threads b of less elasticity in order that the threads b may be delivered more quickly than the threads a, such threads b are wound in a sinuous or zigzag path on to the beam whilst the threads a are wound straight. In warping on to the swift, the threads a pass direct through a reed 2 and round guiding rollers 3, 4, 5 to the rotating swift 6 whereby they are wound thereon in a straight manner, whilst the threads b pass through a traversing comb or grid 7 so as to be wound up in a sinuous manner. The comb &c. 7 is traversed by means of a bar 8, which is caused to slide in bearings 9, 9<a> by lever mechanism 9<b>, 11, 12 from a crank pin 13. This pin can be inserted in any one of several holes in a disc 14 on the roller 4, whereby the amount of traverse may be varied. The warps are transferred from the swift to the warp beam in the ordinary manner.
Patent GB-1148784-A (GB)
Title: Improvements in and relating to radiation detectors
IPC: H01L31/119
Filed: 1966-06-29
Abstract: 1,148,784. Photoconductive devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 29 June, 1966 [1 July, 1965], No. 29120/66. Heading H1K. A radiation detector comprises a semi-conductor body of one conductivity type with an inversion layer of the opposite type formed by oxidation of the surface. On the oxide layer there is a stratified layer of a metal oxide with covalent bonds between the metal and oxygen atoms, and electrodes are provided on the body and metal oxide layer. A typical device is made from an N-type silicon wafer by abrading, etching in a mixture of hydrofluoric, nitric and acetic acids and bromine to initiate oxidation and completing this by exposure to air, preferably containing ozone. Palladium oxide, platinum oxide or titanium dioxide is then deposited on the oxide by vapour deposition or cathodic atomization followed by heating in ozone, and electrodes provided.
Patent GB-1004747-A (GB)
Title: Fluid pressure infusion devices
Inventor: HOLTMANN JOSEF
IPC: E21C37/12
Filed: 1964-07-15
Abstract: 1,004,747. Blasting and mining; fluid injection. PAUL PLEIGER, [trading as PAUL PLEIGER MASCHINENFABRIK]. July 15, 1964, No. 29137/64. Heading F3A. Device for supplying pressurised liquid to a borehole has an injection tube sealable into the borehole and a valve responsive to conditions within the borehole for effecting a change-over in the liquid supply from a low to a high pressure source. The injection tubes 3 are sealed into the boreholes 2 in a mineral deposit face 1 and connected via the valve 9 to a 10-20 atmosphere low pressure line 5 by a line 10 and to a pressure vessel 7 containing liquid at between 150-250 atmosphere pressure, the higher pressure being developed by means of a gasfilled bladder 8 and a pump 6 driven by liquid from the low pressure line 5. The borehole 3 is initially filled with liquid from the lines 5, 10 or by the low pressure liquid driving the pump 6 and supplied through a line 15, and when the flow rate or pressure within the borehole 3 reaches a desired value the valve 9 operates to connect the borehole to the high pressure liquid.
Patent GB-881579-A (GB)
Title: Improvements in or relating to semi-conductor devices
IPC: H01L29/00
Filed: 1960-08-24
Abstract: 881,579. Semi-conductor devices. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 24, 1960 [Aug. 27, 1959], No. 29253/60. Class 37. A semi-conductor device comprises a semi-conductor body 1 having an aluminium electrode 4 which may be rectifying and is engaged by a resilient contact member 6, a soft metal or soft metal alloy layer 7 lying between the member 6 and electrode 7. The layer 7 may comprise tin, indium, lead, bismuth, cadmium or gallium, and may be between 10 Á and 200 Á thick. The semiconductor may consist of N- type silicon, and the device is sealed in a glass envelope 2. The member 6 may consist of manganese - nickel alloy. After assembly, a current pulse may be passed through the diode in a forward direction and the diode may be heated to soften layer 7 slightly.
Patent GB-298641-A (GB)
Title: Improvements in and relating to centrifugal electric switches
IPC: H02K27/10
Filed: 1928-10-11
Abstract: 298,641. British Thomson-Houston Co., Ltd., (Assignees of Schild, C. A.). Oct. 13, 1927, [Convention date]. Alternating-current commutator machines. - A centrifugal switch, which will operate with a snap action and have no tendency to return until its speed of rotation has substantially decreased, uses rotatable weights acting on a spring member of such form that its resistance to the centrifugal force of the weights decreases as it is deflected. As applied to a short-circuiting device for the commutator of a repulsion-induction motor, an annular spring member 12 with a concave surface is secured to the shaft 11 between collars 13, 14 and is flexed by weights 18 attached to itself. A spring 15 between a spacing washer 15<a> and the collar 13 resists flexing of the member 12. In operation, as the centrifugal force of the weights 18 decreases the concavity of the member 12, the resistance of the latter decreases until it is snapped into engagement with the contact surfaces of the commutator segments 10<a>, and there is no tendency for the switch to open until the speed has decreased considerably.
Patent GB-831761-A (GB)
Title: Pneumatic exposure regulating device for photographic cameras
IPC: G03B7/083
Filed: 1957-09-17
Abstract: 831,761. Shutter-speed regulators for photographic cameras. AGFA A. G. Sept. 17, 1957 [Sept. 25, 1956], No. 29283/57. Class 98(1) In a pneumatic exposure-regulating device of the kind having an apertured valve plate 6 and a movable member 14 for covering the apertures 18, different apertures in the valve plate are traversed by different portions of the edge of member 14. The member 14 is preferably driven by photo-electric means. The valve plate 6 closes the end of a cylinder 5, a membrane 8 being tensioned between the cylinder and a positioning ring 7 and fitting closely a profiled ring 22 in the initial position. A rod 9 connected to the centre of the membrane is connected through a Bowden cable 12, 13 to a shutter member, the speed of movement of which is determined by the number of uncovered apertures through which air is admitted when rod 9 moves down, under action of a shutter master member, reinforced by a spring 23, this speed in turn determining the duration of the exposure. The moving cover member 14 which is approximately elliptical, and may be made of plastic vapourcoated with metal, is mounted on the spindle of a moving-coil galvanometer 16 which is energized by a photo-electric cell (not shown). The position of the member 14, and hence the exposure, time set, is indicated by an extension 19 of the member 14 on a scale 20, read through a window 21. Member 14 preferably has sawlike teeth, with portions 25 which intersect at the pivot 26. The apertures 18 lie on curves 27, 28, 29 to be traversed by the edge portions 25 of the member 14, which are perpendicular to the direction of motion and therefore traverse the apertures as quickly as possible. To avoid variation in the retardation at the end position where all the holes 18 are covered, an additional hole 30 is provided which is never covered by member 14.
Patent GB-1425890-A (GB)
Title: Control circuit for a thyristor rectifier
IPC: H02M7/155
Filed: 1973-06-20
Abstract: 1425890 Controlling converters ALLMANNA SVENSKA ELEKTRISKA AB 20 June 1973 [21 June 1972] 29299/73 Heading H2F In a converter comprising a plurality of seriesconnected thyristors 10... In, each thyristor having a device for providing a signal when the voltage in the forward direction reaches a predetermined value and having a control pulse generator 8 for all the thyristors, the signals are combined in an OR gate 3 the output of which is fed to an AND gate 6 arranged so that the control pulse generator 8 only provides ignition signals after the first of said thyristors has recovered its blocking ability and prevents transmission of the ignition signals when all the thyristors are conductive. The gate power is thus minimized. As described, the control pulse generator 8 is coupled to the individual ignition circuits 1 via light guides 23. Further light guides 9 pass the signals indicative of the blocking of thyristors 10 ... In to photodetectors 2 feeding the OR gate 3. A bi-stable circuit 4 and time delay 5 ensure that the AND gate 6 can only be enabled after a time during which the anode voltage can rise sufficiently to allow ignition. The AND gate 6 is enabled by signals from the normal converter control system 21 and by signals from a device 22 which orders ignition of all thyristors if they have not regained their full blocking ability. The forward voltages may be monitored by a circuit comprising a resistor and light-emitting diode connected across the anode/cathode path of each thyristor, the light-emitting diode being shunted by a reverse diode.
Patent GB-470731-A (GB)
Title: Improvements in or relating to vacuum cleaners
IPC: A47L5/32
Filed: 1936-10-28
Abstract: 470,731. Vacuum cleaners. ELECTROLUX, Ltd. (Aktiebolaget Elektrolux) Oct. 28, 1936, No. 29314. [Class 8 (i)] A vacuum cleaner comprises a floor nozzle 9 and a suction &c. chamber 19 to which a detachable auxiliary conduit can be connected for suction or blowing. The handle 33 of the machine actuates through a spindle and co-operating bevel pinions a rotatable valve 12 by which air is drawn either from the floor nozzle 9 or the auxiliary tool, and forced into the dust bag 16, or is drawn from the atmosphere and forced through the auxiliary tool. The valve has two ports co-operating with ports in its cylindrical casing, and has a flat flange or plate 24 in contact with the base of the fan chamber and having a central aperture leading to the fan and a peripheral aperture which in one position leads to the chamber 19. In this position an upright flange 15 on the plate obstructs entry to the dust bag ; in other positions, the dust bag inlet is clear. A dependent flange on the plate prevents attachment of an auxiliary tool and closes the chamber 19 when the floor tool is in use.
Patent GB-629221-A (GB)
Title: Improvements in and relating to depth-limiting attachments for drills and the like
IPC: B23B49/00
Filed: 1947-11-04
Abstract: 629,221. Drills. WILLIAMS, H. M. Nov. 4, 1947, No. 29345. [Class 83 (iii)] A depth-stop for drills or the like comprises an annular stop plate 7 adapted to bear upon the work when the required depth of hole is attained, the stop plate being adjustably clamped to the drill or the like by means of distance bars 3 and a vee-clamp 2 with set screw. The bars 3, which are slotted, are detachably secured to the plate 7 and the arms 4 of the clamp are detachably secured to the bars 3 by means of pins 5 ; alternatively, the ends of the arms 4 may be flanged to engage the side faces of the bars 3 or the latter may engage with channels formed in the ends of the arms 4. The bars 3 may be graduated and calibrated. In a modification, Fig. 5 (not shown), the arms of the clamp are permanently secured to the distance bars which are permanently secured to the stop plate, the clamp being slidable along the drill shank for adjustment purposes. In another modification, Fig. 4 (not shown), an additional flanged stop member is rotatably secured to the stop plate through the interposition of a ball thrust bearing. In a further modification, Fig. 6 (not shown), the faces of the clamp are tapered for taking drill bits with tapered shanks.
Patent GB-225880-A (GB)
Title: Acoustic horn and method of manufacturing the same
IPC: G10D7/10
Filed: 1924-12-08
Abstract: 225,880. Respess, W. R. Dec. 8, 1923, [Convention date]. Moulding hollow-ware and leather and other sheet materials.-A sound magnifying horn is formed from two flat blanks 1 of fibrous material, such as leather, of the shape shown in Fig. 1, which are oppositely pressed in a steam-heated mould to a semi-circular cross-section, Fig. 7, and are then glued together along their edges. The material may have its grain running at a substantial angle with its longitudinal axis, may be three-ply having a thicker and perforated centre ply 4, Fig. 3, and may be impregnated with pitch resin so as to improve the tonal qualities. The glueing mould comprises two members 10, 15, Figs. 8 and 9, fitting together by means of guide pins 11, 12 and recesses 11<a>, 12<a>, and a core formed in two parts 16, 17 to facilitate removal. This mould may be supported in cradles 19, 19<a>, Fig. 12, and placed in a multiple press, Fig. 17, comprising four or more stories with runways 23 .. 26 of different lengths and with means for readily lifting and lowering the trays carrying the moulds. The glued edges of the sections 1 of the horn may be bevelled as shown in Fig. 12, or overlapped, Fig. 14. The horn after glueing may be smoothed, dipped to render it moisture-proof and coated with a crystalline varnish. The Specification also refers to a known method of manufacturing a horn from plastic material by means of a pair of split dies and an inflatable core.
Patent GB-877682-A (GB)
Title: Liquid fuel injection pumps for internal combustion engines
Inventor: EVANS FRASER MACKIE
IPC: F02M59/10
Filed: 1959-08-28
Abstract: 877,682. Fuel-injection pumps. C.A.V. Ltd. June 21, 1960 [Aug. 28, 1959], No. 29418/59. Class 102(1). In an in-line fuel injection pump, an intermediate part of the camshaft 5 is laterally inserted in and supported within an open-ended slot formed in a bearing 6 which is mounted in a circular orifice 7 in the pump body 3 and retained by a locking pin 8.