baber/WOPTO huggingface dataset:
Patent GB-1272300-A (GB)
Title: Three-phase d.c./a.c. inverters
IPC: H02M7/06
Filed: 1969-06-12
Abstract: 1,272,300. Static inverters. DAN FOSS A.S. 12 June, 1969 [19 June, 1968], No. 29860/69. Heading H2F.  In a 3 phase inverter arrangement a pair of inverters 15, 16 (Fig. 11) feed respectively, in each phase, a pair of alternating voltage square waves U R+15  degrees (Fig. 4) and V R+15  degrees (Fig. 5)phase displaced by 30 degrees, to opposite ends of a choke formed by a transformer primary e.g. winding 17 in phase R, thereby producing a mean value voltage square wave output U<SP>1</SP> R  (Fig. 6) at the primary winding centre tap 32. The voltage across the two ends of each primary is the difference between the two applied square wave inputs and corresponding secondary voltage pulses (Figs. 7, 8, 9) are added to the basic mean value square wave pulses at suitable time intervals by interconnecting the said centre tap of one phase to a secondary winding of each of the other phases as shown to give an output voltage waveform U R  (Fig. 10) at each phase terminal 33, 35, 37. The line voltage i.e. between any two phase terminals will thus be a step approximated sine wave as shown (Fig. 3). The line output voltage is said to be free from the 3rd, 5th, 7th, 9th, 15th, etc. harmonics. The three transformers 23, 24 and 25, may be wound on a common five limbed core (Fig. 12 not shown). The inverters may comprise transistors or controllable rectifiers. The D.C. input is at terminals 3, 4 and a potential divider 7, 8 is provided to give a reference zero.
Patent GB-729344-A (GB)
Title: Improvements in lathes
IPC: B23B9/10
Filed: 1952-11-26
Abstract: 729,344. Lathes. HERSAN & CIE. Nov. 26, 1952 [Feb. 7, 1952], No. 29914/52. Class 83 (3). A lathe comprises a headstock carrying two rotatable parallel work-spindles and a rotatable tool-holding plate in front of said spindles, the plate having equidistantly spaced holes in which tool-holders are mounted, the tool-holders being greater in number than the workpieces. Two work-spindles 3, 4, Fig. 3, are provided in the lathe headstock, the work-clamping arrangements for which are controlled by hand-levers 5, 6. An indexible plate 7, Fig. 2, opposite the spindle ends is fed longitudinally on a carriage by a handle 9. Holes 8 are provided concentrically in the plate for tool-holders, the opposite pairs of tools 11, 13, Fig. 4, acting simultaneously on workpieces 12, 13 rotated by the spindles. The locking device for the indexing mechanism operates automatically as the plate is fed towards the work and returned but may be disengaged by a hand-lever 10. When the locking arrangement for the toolplate is released, a grooving or cutting-off operation can be performed by rotating the plate. Only two tool-holders are shown in Fig. 4 for the sake of clarity.
Patent GB-701644-A (GB)
Title: Improvements in the production of electric accumulators
IPC: H01M50/429
Filed: 1950-12-06
Abstract: 701,644. Batteries. YARDENY INTERNATIONAL CORPORATION. Dec. 6, 1950 [Dec. 6, 1949], No. 29917/50. Drawings to Specification. Class 53 A method of "forming" an accumulator of the kind in which the electrodes are separated by semi-permeable diaphragms maintained under compression and impregnated with a solution of an alkali metal hydroxide consists in first submitting the accumulator to a charging operation and then discharging it at a very rapid rate. The first charging operation may be performed slowly, the time taken to completely discharge the accumulator being one-twentieth of the time taken in charging. The electrodes may consist of zinc and silver and lithium oxide or hydroxide may be added to the electrolyte or to the silver powder forming the positive electrode. Specifications 680,793, 682,164, 682.165, 698,405, 701,641, 701,642, 701,643, and 9937/49 (as open to inspection under Sect. 91) are referred to.
Patent GB-170764-A (GB)
Title: Improvements in and relating to shaft furnaces for burning cement, magnesite and similar substances
IPC: F27B1/21
Filed: 1920-10-25
Abstract: 170,764. Hauenschild, A. Oct. 25, 1920. Discharging.-In a shaft furnace for burning cement, magnesite, &c. the rotary discharge grate is given a vertical motion. In the construction shown, the grate 1 is mounted in a frame 2, which is vertically movable relatively to a worm driving-ring 8. The frame 2 is supported on eccentrically-mounted rollers 5, which, as the ring 8 is rotated, lift and lower the frame. The ring may be rotated continuously in one direction, or may be oscillated to and fro by an automatic reversing-drive. Alternatively, the rollers 5 may be mounted centrally and the lifting and lowering effected by inclined planes 23, 24 on the frame 2. Specification 1232/12, [Class 51 (i), Furnaces and kilns, Combustion apparatus of], is referred to.
Patent GB-226538-A (GB)
Title: Improvements in or relating to casting hollow metal bodies
IPC: B22D13/10
Filed: 1924-12-16
Abstract: 226,538. Gelsenkirchener Bergwerks- Akt.-Ges. Dec. 17, 1923, [Convention date]. Metal-pouring.-In casting pipes &c. in a centrifugal mould the spout a for supplying the molten metal is provided with a movable deflector to direct the metal to the points required. The deflector may comprise a flat or curved plate e, Fig. 4, mounted on a vertical or horizontal pivot g or a sliding sleeve with a deflecting lip b, Fig. 2, and an opening c through which the metal falls undeflected when the sleeve is advanced by the bar d as shown. The lip b may have the modified form shown in broken lines.
Patent GB-465069-A (GB)
Title: Improvements in or relating to electric contact making devices
IPC: H01B7/10
Filed: 1935-11-02
Abstract: 465,069. Retractive switches. SAUNDERS, S. Nov. 2, 1935, No. 30364. [Class 38 (v)] An electric contact-making device of the kind comprising two or more uninsulated conductors normally maintained apart and extending longitudinally inside a tube of rubber or other material so that when the tube is pressed the conductors are brought into contact has the conductors normally maintained apart by their outer portions being embedded in the walls of the tube throughout their lengths. As shown the tube A is formed of flattened section the conductors B being formed with longitudinal grooves at each side into which project ridges A<1> on the inside wall of the tube. Alternatively a circular section tube may be employed with four such conductors arranged at right-angles. In further modifications described stranded wires partially embedded in the wall of the tube may be employed or conductors formed as embedded wires secured by woven wire loops to the contact-making wires. Plain round section wires may also be employed and retained by bulging the walls of the tube inwardly between them or interleaved conducting-members may be retained by being formed with outer keying projections engaging in the walls of the tube.
Patent GB-671301-A (GB)
Title: Improvements in or relating to a safety bolt construction
IPC: F16B37/12
Filed: 1949-11-28
Abstract: 671,301. Covers for resisting fluid pressure. DUNTON, S. N. Nov. 28, 1949 [Dec. 3. 1948], No. 30439/49. Class 123(i) [Also in Groups XI, XXV and XXVIII] Removal of the cover 102 of a pressure vessel 100 while the latter is under pressure is prevented by a safety bolt 106 (see Group XXV) fitted internally with a piston (not shown), which is open to the interior of the vessel and controls a clutch between said bolt and its rotating means 116. In a modification, where the cover is retained in place by a diametral yoke engaging projections around the mouth of the vessel, the safety bolt replaces the usual central bolt on said yoke.
Patent GB-200754-A (GB)
Title: Improvements in and relating to ornamental lanterns and the like
IPC: F21S8/00
Filed: 1922-11-07
Abstract: 200,754. British Thomson - Houston Co., Ltd., Wheat, H. C., and Millner, W. Nov. 7, 1922. Ceiling and like overhead lamps; street and like lamps. - To illuminate the glass panel of an ornamental lantern, the body of the lantern is provided with an horizontal extension E which reflects a small amount of light through the panels G. A deflector D attached to the bulb holder also reflects light through the panels G. The surfaces D, E, the sides of the lanterns other than the panels G and the outer surface of the main reflector R are painted matt white.
Patent GB-1242805-A (GB)
Title: A device for use in writing or drawing
Inventor: CHAMBERS GEOFFREY
IPC: B43L13/18
Filed: 1969-06-17
Abstract: 1,242,805. Artist's drawing appliance. G. CHAMBERS and J. J. CLARKE. 14 July, 1970 [17 June, 1969], No. 30504/69. Heading B6P. An artist's drawing appliance comprises a base 1 with a copying surface 2 of a material which can be wiped clean. Pivotally attached on pivoted levers 9, 10 is a plate member 15 which is spaced upwardly from the front end of the base 1 so as to obstruct a user's view of his hand. The user views his hand and writing instrument through a mirror 6 pivoted to the rear of the base 1.
Patent GB-346410-A (GB)
Title: Improvements relating to chairs
IPC: A47C4/34
Filed: 1929-10-08
Abstract: 346,410. Collapsable seats. GREENE, B., The Cottage, Swing Gate Lane, Berkhampsted, Hertfordshire. Oct. 8, 1929, No. 30547. [Class 52 (ii).] A collapsable chair comprises in combination front and rear frames a, b, a back c, seatcarrying members d, d<1>, e, e<1> pivoted together at f and to the frames a, b at g and a flexible seat i mounted on transverse members h, h<1> carried by the members d, d<1>, e, e<1>. Links j, j<1>, and flexible arm-rests k may be provided.
Patent GB-694334-A (GB)
Title: Improvements in or relating to receptacles
IPC: A24C5/358
Filed: 1950-12-14
Abstract: 694,334. Cigarette trays. MORRIS, J. E., and MOLINS MACHINE CO., Ltd. Jan. 1, 1952 [Dec. 14, 1950], No. 30547/50. Class 66 The invention relates to modifications of cigarette trays of the type described in Specification 675, 218 in order that soft or cork-tipped cigarettes may be more satisfactorily packed thereon. According to the invention cigarette trays are provided with division plates 4 for subdividing the length of the tray. The plates are preferably made readily detachable so that the trays may be used without them and may be slotted in the same way, and for the same reasons, as described in the abovementioned Specification. To further assist in preventing crushing a false bottom 5 shaped to rest on the bottom of the slots may be provided to reduce the depth of the tray. Corrugations to receive and render parallel the bottom row of cigarettes may be provided on the bottom (or if used, false bottom) of the tray. These corrugations are formed in lengths of extruded strip 6 which may if desired form the feet of the division plates 4 as shown. Specification 649,467, [Group XXX], also is referred to.
Patent GB-1276893-A (GB)
Title: Photographic process of forming printing plates
Inventor: WESSELLS FORREST ASHTON
IPC: G03F7/20
Filed: 1969-06-17
Abstract: 1276893 Eliminating electrostatic charges from transparencies used in photographic processes. W R GRACE & CO 17 June 1969 [4 Oct 1968] 30713/69 Heading G2M A photographic process comprises the step of removing static electricity from an image-bearing transparency, e.g. by use of electrical ion generators or devices which deliver radiation from radio-active materials, placing the transparency above a liquid photo-curable composition leaving an air gap between transparency and composition, exposing the composition to actinic radiation through the transparency to cure the composition in the exposed areas and developing to remove the unexposed areas to leave a relief image. The exposed composition may be developed as in Specification 1263121 and the photo-curable composition used may be as in Specifications 1102910, 1007345, 1215591 and 1251232. The static eliminator is preferably one which generates both positive and negative ions changing polarity 120 times a second. As shown, the eliminator, an ion generating unit, 16 bombards the transparency held flat on a support 10 by vacuum 12 with alpha particles.
Patent GB-776520-A (GB)
Title: Rolling mill spindle carrier
IPC: B21B35/14
Filed: 1955-10-27
Abstract: 776,520. Rolling. MORGAN CONSTRUCTION CO. Oct. 27, 1955 [Nov. 22, 1954], No. 30739/55. Class 83 (4). A carrier for retracting and supporting driving spindles 16, Fig. 1, of rolling mill rolls 11, 12 comprises a frame 22 adapted to lift cradles 56, which may be individually adjusted in the vertical direction according to the roll setting and have separate means of retracting in the horizontal direction. The cradles 56 are mounted on frames 28, Fig. 2, which are slidable along horizontal pairs of guides 25 pivoted at one end to the drive pinion housing 15 and supported at the free ends on brackets 45 projecting from the frame 22. An hydraulic jack 47 operated from a hand pump 38 raises the frame 22 and when the weight of the spindles 16 is taken by the cradles 56 the frames 28 are retracted by the manual rotation of pinions 64 on the frames 28 and in engagement with racks 37 on the guides 25. Individual adjustment of the height of the cradles 56 relative to the frames 28 to suit different roll settings is obtained by mounting the cradles on pivots 58 and providing limited angular movement through a threaded adjuster 60. Additional pads 68 are provided on the cradles 28 at positions remote from the cradles 56 and are pivotable into an operative position for supporting the spindles when idling.
Patent GB-1305310-A (GB)
IPC: G01D5/347
Filed: 1970-06-25
Abstract: 1305310 Waveform generator: tachometer INTERNATIONAL BUSINESS MACHINES CORP 25 June 1970 [30 June 1969] 30803/70 Heading G1A [Also in Division G2] An optical graduated rule for use in a tachometer comprises an annular member of transparent material which transmits light from a light receiving surface 11 to a remote surface 15 such that alternate dark and light areas are obtained on the remote surface side of the member and alternate light and dark areas are obtained on the light receiving surface side of the member when the member is rotated about its axis relative to a light source positioned on the light receiving side of the member, detectors positioned on either side of the member giving rise to electrical pulses from which a measure of the speed of rotation or angular displacement of the member can be derived in known manner. The rule may be tubular, Fig. 3 (not shown), the outer surface of the tube being the light receiving surface. The member may be a ring, Figs. 4, 5, 8 and 9 (not shown) with both the light receiving and remote surfaces on the outer surface of the ring or on one side of the ring, light being transmitted to the remote surface via an optically intermediate surface.
Patent GB-1275614-A (GB)
Title: Processing apparatus including pressure sealing valve apparatus for the processing of fibres in tow form
IPC: D02J13/00
Filed: 1969-06-18
Abstract: 1275614 Valves POLYMER PROCESSING RESEARCH INSTITUTE Ltd 18 June 1969 [24 Jan 1969] 30837/69 Heading F2V [Also in Division D1] Processing apparatus, particularly for fibres or yarns in tow form to be treated in a pressurized chamber 1, e.g. for scouring, bleaching, dying, chemical or heat treatment, stretching, relaxation, or the like, includes a pressure sealing valve apparatus connected to the chamber and through which the tow can be passed. The valve apparatus comprises an elongated housing 5 containing a resilient tube 2 which communicates at one end with the chamber and extends out through the housing at the other end. The tube is compressible throughout the major portion of its length within the housing against a back-up plate 7, by a pressure plate 8 operated by one or more rods 9, 10 which extend out of the housing. As shown, the back-up plate is settable by adjusting screws 15, 16. The rods are operated by screw and hand wheel 18, 21 on one of the rods, with a chain connecting drive 22 to the second rod. The outer end of the housing is sealed by a gland 6. Pressure within the housing is equalized with that in the chamber by holes 30 through a tapered guide tube 4.
Patent GB-204950-A (GB)
Title: Improvements in or connected with pickaxes or the like tools
IPC: B25D7/00
Filed: 1922-11-11
Abstract: 204,950. Rees, E. E. Nov. 11, 1922. Picks having removable point sections held frictionally in taper sockets, are provided with case hardened socket portions and cast-steel points. As shown the end of each arm C of the head B in which the socket D is formed is of mild steel and is case hardened. The cast-steel points E have taper shanks F fitting the sockets D and held. frictionally therein.
Patent GB-339722-A (GB)
Title: A method of increasing the radiation constant or heat absorbing and emitting capacity of metallic surfaces
IPC: C23C22/00
Filed: 1929-10-11
Abstract: 339,722. Triggs, W. W., (Vereinigte Aluminium-Werke Akt.-Ges.). Oct. 11, 1929. Radiators. - The heat absorbing or radiating capacity of articles made of aluminium or other light metals, or alloys thereof, is increased by producing an oxidized layer thereon. An engine cylinder made of a magnesium-aluminium alloy is coated with a layer of pure aluminium which is then subjected to treatment for the production of a coating of aluminium oxide. Reference has been directed by the Comptroller to Specifications 200,944, 260,536, and 287,194, [all in Class 82 (ii), Washing granular &c.].
Patent GB-781231-A (GB)
Title: Well drilling tool
IPC: E21B10/22
Filed: 1955-10-31
Abstract: 781,231. Boring earth and rock. REED. ROLLER BIT CO. Oct. 13, 1955 [April 4, 1955], No. 31053/55. Class 85 A roller drill bit has a wear-resistant bearing element 9 located in an extension 30 of a shaft 3 and in bearing contact with a bore 40 in a roller cutter 4 mounted on the shaft 3 on bearings 6, 7. The element 9, which is made of sintered tungsten carbide, preferably containing twenty per cent of cobalt is placed in a recess in the underside of the extension 30 and has an arcuate outer surface which has a radius slightly less than that of the surface of the extension 30, Fig. 6.
Patent GB-750301-A (GB)
Title: Improvements relating to control systems for electric motors
Inventor: PENLINGTON THOMAS EDWARD
IPC: H02K17/08
Filed: 1952-01-09
Abstract: 750,301. Split-phase motors. BERESFORD & SON, Ltd., J. Dec. 7, 1953 [Jan. 9, 1952]; No. 31135/52. Addition to 750,291. Class 35. In a split-phase motor having a special winding 12 as described in Specification 750,291 feeding a relay 18a, 18b for disconnecting the auxiliary starting winding 11 at a certain speed, the special winding is situated partly in a slot or slots occupied by the auxiliary winding and partly in a slot or slots occupied by the main winding 10. The effect of this is that during starting, the E.M.F.'s induced in the coil sides oppose one another and prevent operation of the relay, but at a predetermined speed the resultant E.M.F. becomes enough to operate and retain the relay to open the starting winding.
Patent GB-727791-A (GB)
Title: Improvements in endless tracks for vehicles
Inventor: ATKINSON RICHARD LESLIE
IPC: B62D55/253
Filed: 1949-12-05
Abstract: 727,791. Endless tracks for vehicles. ATKINSON'S AGRICULTURAL APPLIANCES, Ltd. Jan. 25, 1951 [Dec. 5, 1949; June 23, 1950], Nos. 31201/49 and 15792/50. Class 79(1). A vehicular endless track adapted to be driven for example, by sprocket teeth and supported by bogie wheels comprises a series of ground engaging elements interconnected by rubber pads, which are rendered substantially unstretchable by internal reinforcement and are disposed close together so as to form a substantially continuous running track for the bogie wheels. In the embodiment shown in Fig. 1 the endless track is formed of pressed or cast elements 11 carrying grousers and rubber road pads, an inwardly projecting series of teeth 12 which runs between the bogie wheels and forms a drive-receiving track mating with the sprocket teeth, and the rubber pads 10. The pads 10 are arranged in two series to form the bogie wheel tracks, one series being arranged on each side of the teeth 12. Embedded in each pad 10 are two lengths of roller chain 13, the ends of each length being coupled to metal blocks 14 having recesses accommodating the heads of bolts 15 by which the pad is secured to adjacent elements 11. In a second embodiment, Figs. 3 and 4, the elements 17 carry grousers 18 and rubber road pads 19 on the outer faces. Each adjacent'pair of elements 17 are interconnected on their inner faces by two rubber pads 16, the pads forming the bogie wheel tracks. Moulded into each pad 16 is a plate 21 of spring steel to which are secured six bolts 22, the bolts being detachably connected to adjacent elements 17 by nuts 23, three bolts to each plate. The reinforcement of the pads may alternatively be formed by pieces of woven asbestos or like stretch-resistant material (similar to machine belting or brake lining).
Patent GB-365598-A (GB)
Title: Improvements in dies for use in the manufacture of tiles for walls, fireplaces and the like
IPC: B28B7/00
Filed: 1930-10-20
Abstract: 365,598. Moulding tiles. HAWKINS, A. C., Bowers, Sneyd Avenue, Westlands, Newcastleunder- Lyme. Oct. 20, 1930, No. 31346. [Class 87 (ii).] Undercut recesses are formed in the backs of tiles during moulding, by sliding members d moved outwards by a central wedge c against the action of springs e. The wedge i raised against the action of a spring g to expand the members d by the inward movement of sliding members a which are operated by their bevelled outer ends contacting with the walls of the mould Z. The members d are retracted automatically as soon as the members a are clear of the mould.
Patent GB-176443-A (GB)
Title: Improvements in sanitary appliances for ships
IPC: B63B29/00
Filed: 1920-11-06
Abstract: 176,443. Parsons, W. S. Nov. 6, 1920. Drainage, sanitary.-In sanitary apparatus and drainage systems for ships in which the water closets &c. are led to a common discharge under the action of an expelling machine, objects likely to cause chokages in the lower discharge pipes, discharge apparatus, or valves are prevented from passing through the water-closet pans or along the discharge pipes. The closet basins are formed with a curved restricted passage leading to projecting piece 11. Alternatively the obstructing projection is formed at 14. In the case of vertical or inclined discharge pipes, a cover a is provided, carrying a plate 11, which projects into a depression 14 in the pipe. The plate 11 may be inclined on the cover a, and the sides of the pipe may be bulged out instead of the bottom. Reference has been directed by the Comptroller to Specifications 4641/83, [Class 26, Closets &c.]. 22237/98, and 21622/05, 5138/09, 10663/10, and 13742/14, [all in Class 26, Closets &c.].
Patent GB-1473961-A (GB)
Title: Data handling apparatus
IPC: G11C19/00
Filed: 1975-07-28
Abstract: 1473961 Error checking INTERNATIONAL BUSINESS MACHINES CORP 28 July 1975 [9 Sept 1974] 31437/75 Headings G4A and G4D An N-bit register 2, e.g. instruction counter, has a logic circuit connected to its K lowest order stages to indicate the probable validity of an alteration to the register contents by a fixed amount representable by R bits, where R<K<N. As shown the register is incremented by one, but inputs 16 could be to other stages instead of the lowest. Gates 20-28 set a latch 30 enabling error indication gate 34 for all states of the K (=4) lowest stages except 1111 which does not allow reliable prediction of parity. Gates 20, 26, 36 provide a signal on line 38 when a change in parity is predicted, and this signal is compared by gate 50 with the parity of the register contents before incrementing, the predicted parity being set in a latch 52. The parity of the register contents after incrementing is compared by gate 54 with the predicted parity to provide an error signal if they do not correspond.