baber/WOPTO huggingface dataset:
Patent GB-1402393-A (GB)
Title: Method of producing glass for optical waveguides
IPC: C03C3/00
Filed: 1973-03-30
Abstract: 1402393 Producing glass in the presence of deuterium; doped silica CORNING GLASS WORKS 30 March 1973 [30 March 1972] 15433/73 Headings C1M and C1A A method of producing glass having reduced hydroxyl ion content, in which a glass forming compound or mixture is heated in a hydrogenfree atmosphere containing deuterium gas or a gaseous deuterium compound, e.g. deuterated methane, to produce an oxide glass. A flame hydrolysis process is preferably used in which a gas containing deuterium is passed through a liquid containing a glass forming compound to produce a gaseous mixture containing vapours of the glass forming compound, and the gaseous mixture is burnt to deposit a film of said oxide by flame hydrolysis on a rotating mandrel 23. In one embodiment (Fig. 2) a vapour generator 15 containing a liquid suspension of SiCl 4  and TiCl 4  as dopant is supported in a constant temperature bath 16 and provided with an entry tube 17 for introducing deuterium and a delivery tube 19 which supplies the vapour containing silicon tetrachloride and titanium tetrachloride. An oxygen supply tank 20 is connected through a reducing valve 21 to the delivery tube 19 which terminates in a burner tip 22 for depositing the film on rotating mandrel 23. In another alternative the deuterium gas is passed through a bath containing a glass formng compound, the resulting vapour mixed with a vapour containing a dopant compound, e.g. AlCl 3 , and the mixed vapours burned in a flame hydrolysis process. In a separate embodiment a glass is produced by heating a mixture of sodium metasilicate and silica in the presence of deuterium gas. The resultant film on mandrel 23 is drawn to form an optical wave guide.
Patent GB-295099-A (GB)
Title: Improvements in linings for trays, boxes, and like receptacles
IPC: B65D5/24
Filed: 1927-06-10
Abstract: 295,099. Burbush, P. P. June 10, 1927. B o x e s, trays, and linings, formed from special blanks.-A folding box, tray or similar receptacle or a folding lining for a box &c. is made from a single rectangular blank, Fig. 1, diagonally creased at the corners along the lines e-b so that the blank can be folded up from the base A and secured at the corners without any joints or sealing as shown in Fig. 3, and additional creases b-h are made at each corner of the blank at right-angles to the creases e-b so that the box &c. can be collapsed flat along those lines and the creased lines between the sides and the bottom.
Patent GB-432606-A (GB)
Title: Improvements in or relating to electromagnetic step-by-step switches
IPC: H01H67/06
Filed: 1934-05-24
Abstract: 432,606. Automatic exchange switches. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ERIKSEN, J., c/o General Electric Co., Stoke, Coventry. May 24, 1934, No. 15501. [Class 40 (iv)] [See also Group XXXVII] In a forwardly and reversely stepping single motion switch having a single ratchet wheel adapted to be engaged by the pawls of two driving magnets, the armatures of the magnets are parallel to each other and have operating strokes in opposite directions. The armatures 3, 4 of the magnets 1, 2 are pivoted on knife-edges 5, 6 and biassed to the normal position by parallel tension springs 15, 16 adjustably carried on screws 19 between tails on the armatures, the springs being not otherwise supported. The two pawls normally rest against back stops 13, 14 and on their forward strokes, engage a 90‹ toothed ratchet 9 and jam between the teeth and vertically adjustable stops 11. The holding pawl comprises a spring 22 with a V- projection engaging the ratchet wheel, secured at one end 23 to a frame extension 24 and at the other end sliding under a lug 26. A centring adjustment 28 is provided.
Patent GB-626796-A (GB)
Title: A constructional arrangement for aiding the viewing of a small gap between apparatus parts
IPC: H01H50/54
Filed: 1947-06-12
Abstract: 626,796. Contacts. SIEMENS BROS. & CO., Ltd., and SMITH, S. C. June 12, 1947, No. 15528. [Class 38(v)] To enable the gaps between contacts 23, 25 and 24 to be clearly visible during adjustment &c. two cut-out parts 36, 37 of the moving contact spring 2 are bent as shown to act as background screens for the contacts when these are viewed from the right. The contact springs form part of an electromagnetic relay the contacts of which are adjusted in the manner described in Specification 626,790.
Patent GB-636689-A (GB)
Title: Improvements in and relating to electromagnets
IPC: H01H50/36
Filed: 1947-06-12
Abstract: 636,689. Electromagnets. BRITISH THOMSON-HOUSTON CO., Ltd. June 12, 1947, No. 15533. Convention date, June 13, 1946. [Class 35] [Also in Group XXXVII] An electromagnet with which is associated an armature, comprises a magnetic core member carrying a winding and having a shim arm pivoted between one of its ends and a magnetic pole member, which shim arm has part of a surface covered by a non-magnetic material, the uncovered part of the surface co-operating with a surface of the. core or pole members to an extent varied by rotating the shim arm. In a D.C. time delay relay of the kind described in Specification 591,480, [Group XXXVII], the rotation of the shim arm 14, part of a surface of which is covered by a brass or other non- magnetic layer 18, brings more or less of the uncovered part 19 into contact with the upper surface of a pole member 15. The reluctance of the magnetic circuit through U-shaped cover member 1, shim arm 14, pole member 13, and a centrally pivoted armature 5 carrying contact arms 21, 22, and therefore the time delay of the relay, is thereby varied. Energization of coil 16 causes rotation of armature 5 against a spring 8 until its ends abut against the left-hand end of core member 1 and the upper surface of pole member 13 respectively, so that contact is broken at 21, 23 and made at 22, 24. Core member 1 consists of an iron core encased in a copper sheath. Shim arm 14 may be chromiumplated all over. Specification 483,100 is also referred to.
Patent GB-120415-A (GB)
Title: Improvements in Sanding Devices for Motor and like Road Vehicles.
Inventor: ESTRADA TOMAS DE
IPC: B60B39/04
Filed: 1917-10-26
Abstract: 120,415. Estrada, T. de. Oct. 26, 1917. Sand, distributing on wheel tracks.-The underframe or chassis of a motor or like road vehicle is provided with sand receptacles 2 having discharge pipes 3 terminating in flared ends 4 in front of the wheels. A control valve 5 fitted in each pipe is opened by a lever 6 and connexions or through the clutch pedal. Sand may be discharged in front of all the wheels. Reference has been directed by the Comptroller to Specifications 483/07, 21741/12, 18206/12, 16023/13, and 10613/15.
Patent GB-1255700-A (GB)
Title: Method of and apparatus for preserving horticultural products, including flowers, fruit and vegetables, in a controlled atmosphere
Inventor: BONOMI FELICE
IPC: A23B7/148
Filed: 1969-03-25
Abstract: 1,255,700. Preserving horticultural products. F. BONOMI. 25 March, 1969, No. 15598/69. Heading A2D. A method of preserving horticultural products, i.e. flowers, fruit and vegetables, is characterised in that the products are stored in a space enclosed in an envelope, which forms part of a closed system containing an artificial atmosphere and which is disposed inside a cold chamber for effecting indirect cooling of said products while circulation of said artificial atmosphere within said space is maintained and the composition, relative humidity and temperature thereof are controlled externally. The artificial atmosphere is preferably a mixture of carbon dioxide and oxygen or air. The envelope is preferably made of a plastics gasimpervious material and is substantially in the form of a large parallelepiped. This material or the lining thereof may be adapted to limit the formation of condensate.
Patent GB-356190-A (GB)
Title: Improvements in and relating to the production of hydrocyanic acid
IPC: C01C3/02
Filed: 1930-05-22
Abstract: Hydrocyanic acid is produced by oxidizing ammonium sulphocyanide by means of nitric acid in such amount that the solution always contains at least 1 per cent of free nitric acid. The reaction may be effected by adding nitric acid and then ammonium sulphocyanide solutions in the requisite proportions to a solution of ammonium bisulphate which is maintained at 95-97 DEG  C. The evolved vapours are passed through a column which condenses any nitric acid, the hydrocyanic acid absorbed in an alkali solution, and the nitric oxide is reconverted into nitric acid.
Patent GB-544077-A (GB)
Title: Improvements relating to trolleys or the like, particularly for transporting bombs to aircraft
IPC: B62D63/06
Filed: 1940-10-29
Abstract: 544,077. Trollies and trucks ; road vehicles. ALVIS, Ltd., DUNN, W. M., KEMP, A., and BEERE, R. H. Oct. 29, 1940, No. 15815. [Class 108 (i)] A trolley or truck, which may be drawn by manual or power means and is particularly intended for transporting bombs &c. across an aerodrome has a chassis-frame with parallel longitudinals 11 fitted with pairs of sockets 23a, 23b or, made of anglebrackets 23, for receiving the square ends 24 of cross-members 25 for bearing the load and provided with a central space 26 for receiving a bomb and with lateral spaces 30 usable when the cross-member 25 is placed in an inverted position. The transverse end members 12 are supported by quarter-elliptical springs 13 upon the through-axles 14 and 15 of supporting wheels, one pair of which is steerable and brakable in the manner described in Specification 544,078, [Group XXXIV].
Patent GB-457493-A (GB)
Title: Improvements in or relating to electron discharge apparatus, for use in television, for example
IPC: H01J31/32
Filed: 1935-05-30
Abstract: 457,493. Electron multipliers. LUBSZYNSKI, H. G., 36, Cherry Grove, West Drayton Road, and KEYSTON, J. E., Andora, Pield Heath Road, both in Hillingdon, Middlesex. May 30, 1935, No. 15816. [Class 39 (i)] A discharge device comprises a means whereby an electron image may be projected upon a target emitting secondary electrons under bombardment by the primary electrons and a second screen upon which the secondary electrons are focused to give an electrostatic, electron, photographic or fluorescent image. In one form, Fig. 1, television transmitting apparatus comprises an electron multiplier tube having a photo-electric transparent screen 1 upon which an optical image is projected, secondary electron emitting grids or permeable foils 5, 6 and a mosaic electrode 3 which is scanned by the beam of a cathoderay device 7, 8, 9. Electrostatic shields 10, 11, 12 and magnetic focusing coils 13, 14, 15 are provided. The shields 10, 11 may be connected to the target electrodes 5, 6. The coils 13, 14, 15 may consist of wire-wound coils covered with magnetic shields having annular gaps 13c on the inside surface so as to produce fields extending only a short distance axially, or they may be long solenoids. The target electrodes 5, 6 may be formed of wires having a cross-section tapering towards the screen 1, and positively-biassed auxiliary grids may be arranged adjacent to them, as described in Specification 446,661. Electrostatic lenses may replace the magnetic coils. The mosaic screen 2 may be replaced by a mica sheet scanned from the front. In a modification, Fig. 3, an optical image is projected upon a photo-electric screen 26 and the photo-electron beam is focused upon a target 27 by a magnetic focusing means 28 or by an electrostatic lens. The shield electrode 29 is connected to the target 27. Secondary electrons from the target 27 are focused upon a mosaic 34, or a second target, by a coil 35 or an electrostatic lens. Formulae for the focal length, for the inclination of the targets to the preceding electrodes, for the angle through which the image is rotated relative to the object and for the angle which the axis of the coil 35 and of the cathode ray device 7, 8, 9, make with the plane perpendicular to the target 27 and containing the axis of the coil 28, are given for the case where magnetic focusing is used. The successive distortions of the object in each image plane may be arranged to cancel out, or the scanning device may be distorted in correspondence with the final image. The invention may be applied to " image-dissector" tubes in which the final electron image is deflected over an apertured plane electrode ; or the final image which may be a magnification of the object may be produced on a fluorescent screen so that the device may be used for micro-photography or for " seeing " through fog. Specifications 442,666, 443,777,and 451,766 also are referred to.
Patent GB-433980-A (GB)
Title: Machine for printing postage stamps
IPC: B41G7/00
Filed: 1934-05-28
Abstract: 433,980. Printing postage stamps. ROLAND, M. F., 56, Ludgate Hill, London.- (American Banknote Co. ; 70, Broad Street, New York. U.S.A.) May 28, 1934, No. 15863. [Class 100 (i)] In a rotary engraved-plate printing-machine for printing postage-stamps, punches are mounted on the plate cylinder 10, Fig. 3, adjacent to the ends of the plate 13 so as to discharge into a plate-clamp slot 12, and co-operate with punch plates mounted on the impression cylinder, the holes punched in the sheets of stamps being for the purpose of aligning the sheets on pegs upon the bed of a perforating-machine. Two holes 20 are drilled in the centres of the sides of the plate 13 outside the printing area and are threaded and formed with flared edges near the openings 20<a>. A tubular punch 22 is screwed into each hole with the cutting edge projecting slightly. On the impression cylinder 11, the make-ready board 27 is formed with projecting tabs 30, Fig. 5, to coact with the punches, the tabs being reinforced by thin metal strips 31 passed through slots 29 in the board, bent over the tabs, and secured by rivets 32. The punchings fall into the clamping slot 12 which is covered by a strip of heavy gummed paper to prevent their escape while the machine is running. Holes 26 in the punch 22 facilitate the escape of the punchings.
Patent GB-1533602-A (GB)
Title: Linking machines
IPC: D05B75/02
Filed: 1976-04-20
Abstract: 1533602 Linking machines; mounting MATHBIRK Ltd 20 April 1977 [20 April 1976] 15866/76 Heading D1G A linking machine is rotatably mounted on the horizontal work surface of a work table. Machine 7, 8, 9 may be rotated by footplate 11.
Patent GB-110937-A (GB)
Title: An Improved Process and Apparatus for Carbonising Metal Articles.
Inventor: FENNELL WILLIAM
IPC: C23C8/66
Filed: 1916-11-07
Abstract: 110,937. Fennell, W. Nov. 7, 1916. Cementation. - Metal articles are carburized, by causing a stream of them, mixed with a carburizing agent, to descend by gravity through a preferably vertical conduit C heated externally, for example by burners B; the articles and materials fall upon a revolving table P forming a heap which obstructs and regulates the descent of the column in the conduit C, and is removed piecemeal at the desired rate. A scraper SS may be fitted to assist in removing the articles &c. The lower end of the conduit C has an adjustable sleeve SV.
Patent GB-987892-A (GB)
Title: Freewheel clutch with tiltable sprags
IPC: F16D41/07
Filed: 1962-04-26
Abstract: 987,892. Ratchet clutches. A. MAURER. April 26, 1962 [April 29, 1961; March 7, 1962], No. 15962/62. Heading F2C. In a sprag clutch pressure liquid is directed transversely between the sprags whereby the hydrodynamic forces arising during tilting of the sprags upon overrunning lift the sprags clear of the inner race to reduce wear. As shown in Fig. 2 pressure liquid from a pump is supplied through passages 15, 16 in the inner race member 1 to a chamber 17 formed by an annular member 19, the liquid passing through an annular slot 22, between the sprags 5, and then escaping through a second slot 25. When overrunning occurs the loading springs tilt the sprags clear of the outer race 3 and the pressure liquid raises them out of contact with the inner race. As the speeds of the races approach synchronism the reduced hydro-dynamic forces allow the sprags to reengage without shock. The liquid may be supplied through passages in the outer race, Fig. 6 (not shown), while in a further arrangement the inner race carries a bladed disc serving as a centrifugal impeller for circulating the liquid, Figs. 7 and 8 (not shown). In the form according to Fig. 10 a scoop tube 52 extracts liquid from an annular chamber 50 in the outer race during overrunning and passes it into a chamber 53 in the inner race, from which it passes between the sprags and through return passages 55.
Patent GB-263041-A (GB)
Title: Improvements in coil friction clutches
IPC: F16D13/08
Filed: 1926-06-25
Abstract: 263,041. Herbert, Sir A.. Vernon, P. V., and Wilson, C. June 25, 1926. (Clutches, friction.-In a friction clutch in which one element is constituted by a coil formed at one end integrally with its supporting element 2 and having a peripheral engaging face for engagement with the other element of the clutch, the coils are first cut in spaced relationship and thereafter are compressed together so that they acquire a permanent set in contact with one another. The clutch is then hardened and tempered and the engaging surface ground. The element 2 is slidably keyed on the shaft, and a pin mounted in a diametral hole 7 in the element connects the clutch with the operating rod slidable in the shaft. The clutch shown is of the double-ended conical type, and the slits 3 forming the coils terminate in holes 4. The coned engaging surfaces may be machined to an angle dissimilar to that of the co-operating surfaces with which they engage.
Patent GB-391627-A (GB)
Title: Heel with exchangeable top lift
IPC: A43B21/37
Filed: 1932-06-06
Abstract: 391,627. Boot &c. heels. INDUSTRIEU. HANDELSGES., Vaduz, Liechtenstein. June 6, 1932, No. 16000. Convention date, March 15. [Classes 17 (ii) and 17 (iii).] A top lift b of semirigid composition is detachably connected to a part b<1> of semirigid rubber composition permanently connected to the heel portion of the shoe, by means of a latch c which is inserted in a channel l in the top lift b and which engages in a bow h secured in the part b<1>. The bow h rises slightly towards the front end of the part b<1> to facilitate the insertion of the latch c which is guided in the bow h by means of a steel element m fixed in the part b<1>. A metal plate a is vulcanized or cast in the top lift b adjacent the heel part b<1>. Lateral movement is prevented by pins e fitted in the top lift and engaging metal sleeves d in the part b<1>. In a modification, the top lift b comprises a lift of semi-rigid composition and a tread lift of leather.
Patent GB-1268667-A (GB)
Title: Transistor inverter circuits
Inventor: HAMILTON BILLY HAROLD
IPC: H02M7/537
Filed: 1969-03-27
Abstract: 1,268,667. Transistor switching circuits. WESTERN ELECTRIC CO. Inc. 27 March, 1969 [29 March, 1968], No. 16002/69. Heading H3T. [Also in Division H2] In an invertor (see Division H2), identical monostable circuits 12, 13 (Fig. 2) are driven by a bi-stable multivibrator 11. Monostable 12 for example comprises a normally conducting NOR gate 33 and a normally non-conducting NOR gate 34. In the absence of square wave drive signals gate 33 is normally conducting and gate 34 is maintained OFF. When a + ve voltage excursion appears at input 41 gate 34 conducts turning OFF gate 33. The discharge time of C44 is set to be slightly longer than one ¢-period of the timing signal so that gate 33 is turned on by the next positive excursion at terminal 38. Monostables 12, 13 are therefore driven ON and OFF in phase opposition. A positive signal may be applied to terminal 37 to terminate the output by turning ON both gates 33, 33<SP>1</SP> and returning both monostables to their stable state.
Patent GB-1014119-A (GB)
Title: Improvements in the construction of suspended ceilings
IPC: E04B9/16
Filed: 1964-04-17
Abstract: 1,014,119. Suspended ceilings. MATTHEW FORKIN and FORKIN BROTHERS Ltd. April 17, 1964 [June 17, 1963], No. 16014/64. Heading E1V. Ceiling panels 12 are suspended from a grid of strip metal battens 1, 1<SP>1</SP> interconnected by linear, 5, or T-shaped, 8, coupling members having sockets 7 for the transverse battens 1<SP>1</SP> and slots or sockets for the longitudinal battens 1, the panels being supported beneath the battens by inverted U-shaped sheet metal saddle clips 14 with tags 17 arranged to keep the clips at right angles to the battens, projections 20 to locate the clips vertically, and flanges 18 to support the panels. Each clip has recesses 22 in the slot therein, to receive a rib on the web of an inverted T-sectioned plastics cover strip which may be used to cover the joint between adjacent panels.
Patent GB-439181-A (GB)
Title: Improvements in or relating to the treatment of fabrics
IPC: B65H18/10
Filed: 1934-05-30
Abstract: 439,181. Feeding webs. BRITISH CELANESE, Ltd., 22, Hanover Square, London, GUYLER, A. F., and BOALER, W. H., c/o British Celanese, Ltd., Spondon, near Derby. May 30, 1934, No. 16101. [Class 100 (i)] [See also Group VIII] In a machine for winding fabrics, the fabric edges are uncurled by a brush or brushes moving across the fabric edges. In the machine shown the fabric is also doubled, one part passing beneath the frame 20 and the other part above the frame, and the fabric edges are held by curved bars 31 against two brushes 24 mounted on a common shaft 26 and rotated by a motor 13. The brushes are partly screened by, plates 22, 23. The doubled fabric is wound up on a bobbin slipped over the shaft 12. Depression of the treadle 34 first closes the switch 36 and then moves the brush gear of the motor 13 to vary its speed. The motor is geared to the winding spindle 12. The machine shown is fed from a heap of material on the floor, but when the fabric has to be inspected at the same time it is arranged to be fed downwards. The bars 31 may be fixed, or as shown at 70, 71, Fig. 7, may be mounted in a frame 72 pivoted at 73 and connected by a rod 75 with a second treadle by means of which the rods 70, 71 may be adjusted to keep the two edges of the fabric level with each other.