baber/WOPTO huggingface dataset:
Patent GB-818772-A (GB)
Title: Improvements in and relating to electric circuit interrupters
Inventor: HEWITT JOHN
IPC: H01H33/88
Filed: 1955-01-14
Abstract: 818,772. Fluid-blast switches. ENGLISH ELECTRIC CO. Ltd. Jan. 6, 1956 [Jan. 14, 1955], No. 1193/55. Class 38 (5). In a fluid-blast switch having at least one movable contact arranged on a rotatable operating shaft, a spring-biased pump has a unidirectional operative connection with the shaft and is arranged so that when the shaft is turned to close the contacts, the pump is driven to charge it with fluid and to stress the biasing spring or springs and when the shaft is turned to open the contacts, the pump under the action of the spring or springs tends to cause a flow of arc-quenching fluid in the region of the contact gap. In the Figure, the driving sleeve 33 of the pump is free to rotate on the operating shaft 17 to which it is connected by a ratchet (not shown). Rotation of the shaft 17 in the anti-clockwise closing direction causes vanes 35 carried by the sleeve 33 to traverse arcuate chambers 36 to charge them with fluid which enters through a suction valve (not shown). At the same time springs 37 are stressed. During an opening operation, the ratchet permits the shaft to move rapidly to the open position without retardation due to the pump. The springs 37 then cause the clockwise rotation of the sleeve 33 and vanes 35 to discharge the fluid from the pump through exit ports 38. into the contact chambers of the switch when the are-generated pressure in the contact chambers is sufficiently low to permit the opening of a non-return valve associated with them. In a modified arrangement, Fig. 4 (not shown), the pump has only one chamber and is biased by a clockspring. The general arrangement of the switch may be that described in Specification 816,321 and it may be detachably mounted in a housing as, described in Specification 817,093.
Patent GB-333138-A (GB)
Title: Concrete mixer
IPC: B28C7/08
Filed: 1930-01-13
Abstract: 333,138. Chain Belt Co. Jan. 11, 1929, [Convention date]. Feeding.-In a concrete mixing-machine comprising a rotary drum charged by a pivoted skip, means are provided for vibrating the skip in its discharging position to ensure complete discharge, the means consisting of projections on the drip rim on the drum which engage rollers on the skip. The forward portion 13 of the skip is furnished with a saddle 14, carried on a shaft 15, supported in arms 16, which are pivoted to the main frame at 17, whereby the skip is swung to and from the mouth of the drum by the engagement of the projections 19 thereon with the rollers 18 on the skip. The arms 16 are extended downwards and formed with treads 21 which abut against the frame 22 to limit the inward swing of the skip.
Patent GB-473681-A (GB)
Title: Porous grinding body and method of producing same
IPC: B24D18/00
Filed: 1936-01-15
Abstract: Grinding-wheels &c. having a porous structure having the volume of grinding-material and bond equal to at least 50 per cent of the volume of the wheel, the size of the pores being greater than that of the abrasive grains and being smaller for high speed wheels. The wheel &c. is formed by mixing the grinding-material and bodies of spherical &c. form, moulding the wheel and removing the bodies; the bodies may be composed of coke slag, saw dust, seed corn, cork, pith, &c., and are removed by burning.  An example of a composition to be employed has 1000 cc. of corundum of 150 grit, 150 cc. powdered ceramic frit, 250 cc. of a wetting solution, for example, a solution of dextrine, resin or waterglass, and 900 cc. of the bodies.
Patent GB-693551-A (GB)
Title: Improvements in or relating to a process for manufacturing fuel agglomerates
IPC: C10L5/20
Filed: 1948-01-15
Abstract: 693,551. Fuel. VLOEBERGHS, A. Jan. 15, 1948 [Dec. 17, 1947], No. 1247/48. Class 50 A resinous distillate, obtained from the treatment of residual lye from the manufacture of cellulose, is used as a fuel-binder in the production of fuel agglomerates. The distillate may be a crude oil known as crude pine oil, and further distillations may be effected to produce less crude products for use as binders. Several such distillates may be applied to the fuel. The distillates may be refined oils, a liquid or solid resin, the latter being applied to the fuel preferably in powder form, or a distillate of true glue.
Patent GB-878627-A (GB)
Title: Office furniture
Inventor: TRIPP JOSEPH HENRY
IPC: A47B87/02
Filed: 1959-01-14
Abstract: 878,627. Desks. LUCAS (INDUSTRIES) Ltd., JOSEPH. Jan. 12, 1960 [Jan. 14, 1959], No., 1342/59. Classes 52(2) and 52(3). [Also in Group XXXVI] A channel member which extends throughout the length of a composite office desk is provided externally with adjustable desk feet and carries internally electric cables from telephones and electrical typewriters arranged on the desk. As shown, the desk is formed in sections 4a and these are joined by means of angle plates 7 welded to an open-sided channel member 6. Lock-nuts 13 secure feet 11 at the required height. Work tables having fixed legs, branch off the main desk.
Patent GB-1443073-A (GB)
Title: Method of preparing copolymers
IPC: C08G63/08
Filed: 1974-01-11
Abstract: 1443073 Polymers INTEROX CHEMICALS Ltd 23 Dec 1974 [11 Jan 1974] 01352/74 Headings C3P and C3R Polymers are formed by co-reacting (1) an ethylenically unsaturated monomer containing a hydroxyl group and (2) a lactone in the presence of stannous octoate as catalyst and optionally a free radical initiator, and/or a further unsaturated monomer. An example refers to co-reacting 2-hydroxyethyl acrylate, styrene and epsilon-caprolactone in the presence of stannous octoate and azo - bis - 2 - methyl propionitrile in solution in xylene.
Patent GB-1108604-A (GB)
Title: Emitter-coupled transistor d.c. amplifiers
IPC: H03F3/45
Filed: 1965-01-12
Abstract: 1,108,604. Transistor amplifying circuits. TEXAS INSTRUMENTS Ltd. 11 Jan.. 1966 [12 Jan., 1965], No. 1416/65. Heading H3T. In a D.C. amplifier comprising an emittercoupled pair of transistors VT1, 2, an output being taken from the collector load circuit resistor R3 of transistor VT2, common mode signal rejection is provided by means of a unity gain phase inverter comprising transistor VT3. Transistor VT3 is of opposite conductivity type with its collector connected to the collector of transistor VT2 and with an emitter circuit resistor R4. The base is driven from the collector of transistor VT1, the load circuit of which comprises resistor R2 and also a diode D for temperature compensation Resistors R2, 3, 4 may have the same value.
Patent GB-1096802-A (GB)
Title: Improvements in or relating to containers for cut films
IPC: G03D3/06
Filed: 1966-01-12
Abstract: 1,096,802. Containers for cut film. CHIRANA, ZAVODY ZDRAVOTNICKE TECHNIKY, OBOROVY PODNIK. Jan. 12, 1966 [Jan. 16, 1965], No. 1429/66. Heading G2A. A container for cut film comprises a solid cylindrical body 1, having spiral slots 2 therein, rotatably mounted in a drum 6 which is provided with a longitudinal opening 10 through which films are insertable into, and removable from, the slots, one film being placed in each slot.
Patent GB-632037-A (GB)
Title: Improvements in insulating staples
IPC: F16B15/00
Filed: 1948-01-16
Abstract: 632,037. Staples. RUBLEE, N. C. Jan. 16, 1948, No. 1467. Convention date, July 31, 1947. [Class 89 (ii)] A staple has insulating material 7 moulded over the head 6 and part of the legs 5. The moulding provides a restricted entrance at 8 for the wire so that the staples may be snapped on to and held in place on the wire during driving.
Patent GB-1129141-A (GB)
Title: Exposure control means for photographic cameras
IPC: G03B7/099
Filed: 1965-01-13
Abstract: 1,129,141. Photographic cameras. EASTMAN KODAK CO. Jan. 13, 1965 [Jan. 13, 1964], No.1481/65. Heading G2A. A photo-cell 14 forming part of an exposure control can be exposed through apertures A and B of a rotatable disc 10, such that the photo-cell is alternately subjected to light from the central area of the scene and the entire scene respectively. Switches 22 and 28 Figs. 7 and 8 (not shown) may effect reversal of current through meter (24) to produce an average meter current response i A  - i B  Fig. 2 (not shown). The meter 24 may actuate a diaphragm vane or a like light alternator.
Patent GB-1322262-A (GB)
Title: Packaging
IPC: B65B43/30
Filed: 1971-01-12
Abstract: 1322262 Cutting apparatus SOC INDUSTRIELLE DE PLASTIQUES ET RESINES APPLIQUEES SA 12 Jan 1971 [12 Jan 1970] 1503/71 Heading B4B [Also in Division B8] In a packaging machine which receives plastics wrapping material in the form of a collapsed tubular sheath 3, the sheath is severed adjacent a heat-weld formed by elements 26b, 27b by means of a cutter 28 with inclined blades 29a, 29b which is reciprooable across the sheath by endless chain 30. The cutter makes a single cut after each packaging operation, first in one direction and then in the other.
Patent GB-523923-A (GB)
Title: Improvements in electric discharge devices with quartz or like envelopes
IPC: H01J5/32
Filed: 1939-01-17
Abstract: 523,923. Discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent - Treuhand - Ges. fur Elektrische Gluhlampen). Jan. 17, 1939, No. 1638. [Class 39 (i)] In high pressure metal vapour lamps having an envelope 2 of quartz, or other material having a thermal expansion co-efficient not greater than 1.5 x 10<SP>-6</SP> per ‹C., the main electrode 13 is surrounded by a sleeve 9 of quartz, and the lead to the auxiliary electrode 8 is on the outside of the sleeve. Preferably the auxiliary electrode is formed by turning the end of the lead over the edge of the sleeve. The main electrode consists of a coil of tungsten &c. on a core 12 of activating material, supported axially in the sleeve 9 and connected to the external lead 15 by an embedded strip 14. The lead 8 is connected to the external lead 17 by a strip 16, and the whole is sealed into the end 10 of the envelope. The envelope is supported in an outer bulb by leads passing through the foot tube and the auxiliary electrode is connected to one of the leads through a high resistance.
Patent GB-1159720-A (GB)
Title: Improvements in or relating to Electric Batteries.
IPC: H01M12/08
Filed: 1967-01-12
Abstract: 1,159,720. Zinc-air battery. GULF GENERAL ATOMIC Inc. 12 Jan., 1967 [14 Jan., 1966], No. 1734/67. Addition to 1,028,548. Heading H1B. The storage battery of Specification 1,028,548, in which each cell has a zinc anode, a porous inert oxygen electrode and electrolyte which is passed through the space between the electrodes, which electrolyte may be circulated outside the cell to a device for reversibly separating and storing the zinc oxide reaction product, may be modified (a) by having a cathode comprising a porous plate and a thin inert plate which is deformed, e.g. by a rectangular recess, to define, in conjunction with the porous plate, a plenum chamber through which oxygen-containing gas is supplied to the porous plate, which porous plate is electrically and structurally connected in a gas-tight manner to the thin plate about the periphery of the deformation, and/or (b) by having only a part of the electrolyte circulating outside the cell pass through the means for separating reaction products before being returned to the cell.
Patent GB-695184-A (GB)
Title: Improvements in or relating to sieves for grading bulbs, tubers and the like, into different sizes
IPC: B07B13/00
Filed: 1952-01-22
Abstract: 695,184. Sifting apparatus. VRIES .  S. DE. Jan. 22, 1952 [Jan. 22, 19511, No. 1792/52. Class 117 A sieve for grading bulbs, tubers and like produce into different sizes comprises a base 2 having interspaced longitudinal slots 4, deflectors 6 on the upper surface between the slots sloping forwardly of the sieve to orient produce longitudinally of the seve and permit their falling through the grading apertures, and a stepped guide or ramp 78 at the forward end of each slot sloping downwards and backwards so that produce unable to pass through the slots is assisted upwards again to the level of the sieve slots. Ridges 5 and partitions 11 may separate the slots. The base may be covered with a correspondingly apertured protective rubber layer and the ridges, deflectors and ramp may also consist of or be covered with rubber. A plurality of sieves may be arranged in sequence on a reciprocating frame, with the slots in each successive sieve of greater width than those in the preceding sieve.
Patent GB-534343-A (GB)
Title: Improvements in and relating to photo-sensitive electrode structures
IPC: H01J29/43
Filed: 1940-01-30
Abstract: 534,343. Cathode-ray tubes. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 30, 1940, No. 1819. Convention date, Feb. 1, 1939. [Class 39 (i)] In the production of a photo-sensitive screen for cathode-ray tubes, a plate of aluminium 1 is electrolytically oxidized on its surface 2, and a silver coating 3 is applied to the oxidized surface. The plate is then heated to a temperature of the order of 400 C. to cause the oxide and silver layers to separate into small portions which are then sensitized with caesium &c.
Patent GB-779792-A (GB)
Title: Electronic direct current amplifier
IPC: H03F3/36
Filed: 1955-01-21
Abstract: 779,792. Automatic temperature control systems. GOODYEAR TIRE & RUBBER CO. Jan. 21, 1955 [July 24, 1954], No. 1871/55. Class 38 (4). [Also in Group XL (c)] The temperature of a chamber 15 is controlled by means of a temperature-sensitive resistance element 17 which forms one arm of a Wheatstone bridge circuit, the other arms of which comprise an adjustable resistor 22 and potentiometer 21, the slider of which is earthed. Bridge unbalance is detected by means of a direct-current amplifier 23 details of which are given with reference to Fig. 1 (not shown, see Group XL (c)). The amplifier output comprises a relay 24, the contacts of which are in series with a heater 16 and power supply 18. The bridge is set to be balanced at the desired temperature, the relay 24 then being energized to open the heater circuit; fall in temperature unbalances the bridge and de-energizes the relay, so closing the heater circuit.
Patent GB-840620-A (GB)
Title: Improvements in or relating to tracks for power driven vehicles
IPC: B62D55/04
Filed: 1959-01-19
Abstract: 840,620. Endless tracks for vehicles. SCHLEPPERWERK NORDHAUSEN VEB. Jan. 19, 1959 [Nov. 24, 1958], No. 1874/59. Class 79(1). A track for a power-driven vehicle comprises two elastic V-belts 10 carrying track shoes 1 at their exterior and wheel-guiding members 5 at their interior; the guiding members having trapesoidal openings in which they clamp the belts to the track shoes. The members 5 engage a drive sprocket (not shown) to turn the track 1. A tongue on one side of each member 5 engages in a hole 3 in a side-face on the inner side of the track shoe, the other side of the member being bolted through a hole 4. The inner sides of the openings are curved to conform to the curvature of the belt. In another embodiment the track has a flat inner surface. (Fig. 4 not shown).
Patent GB-389233-A (GB)
Title: Improvements in or relating to electric short wave thermionic valve generators
IPC: H01J25/52
Filed: 1932-01-21
Abstract: 389,233. Electric inductances. M-O VALVE CO., Ltd., Marconi House, Strand, London, and MEGAW, E. C. S., c/o General Electric Co., Wembley, Middlesex. Jan. 21, 1932, No. 1888. [Class 37.] A tuned circuit is enclosed within the envelope of a valve generator and its frequency can be varied by means provided within the envelope without opening the latter. The anodes 1, 1<1> are connected to the load by internal straight wires 5, 6 and 5<1>, 6<1>. A metallic bridge piece 7 completes the tuned circuit 5, 5<1>, 7 and is capacitatively coupled to the wires 5, 6 and 51, 61 by being supported near the latter on glass rods 8 provided with notches 9, the bridge being adjustable to any pair of notches by tilting the containing envelope 4.
Patent GB-1489806-A (GB)
Title: Light equalizer
IPC: G02B6/00
Filed: 1975-03-21
Abstract: 1489806 Lighting fittings ENVIRONMENTAL RESEARCH & TECHNOLOGY Inc 21 March 1975 [5 April 1974 (2)] 01939/76 Divided out of 1489804 Heading F4R A light equalizer designed to produce a substantially uniform light intensity across its output aperture 62 irrespective of intensity variations across its input aperture 58 comprises a plurality of light-transmissive elements 54, 55, 56 ... arranged in a stack along a common axis, at least one of the elements having a multiplicity of light scattering centres and the external surface of the stack, with the exception of the end faces which constitute the input and output apertures, being provided with an internally reflective cover 60. The cover may consist of an inner layer of aluminium precoated on polyethylene terephthalate sheet and enclosed in a heat-shrunk polymeric tube which provides mechanical support for the light transmissive elements, the elements being arranged in contact with one another or being separated, e.g. by light pipes. The light scattering centres may be provided by grinding or sandblasting the faces of the elements or by forming a plurality of refractive lenticules thereon. Alternatively, when used with I.R. radiation the elements may be formed by heating and compressing a mixture of powdered salts having different refractive indices, suitable mixtures being KBr with CsI or NaCl. The mixture may be heated until partial solution of one component into another has occurred, thereby producing a gradient of the refractive index at the interfaces of the particles.
Patent GB-1291555-A (GB)
Title: Apparatus for and method of screening free running material
Inventor: SMITH WALTER JOHN
IPC: E02F3/40
Filed: 1970-01-15
Abstract: 1291555 Screening apparatus ECONOFUEL Ltd 30 Dec 1970 [15 Jan 1970] 1959/70 Heading B2H [Also in Division E1] An apparatus for screening loose material, e.g. coal, limestone &c. comprises a bucket, means for mounting the bucket on the hydraulic lifting arms 26, 32 of a caterpillar tracked vehicle, at least two sides 16, 18 and the base 10 of the bucket having a grid structure and the edge of the side 18 remote from the base 10 being a cutting edge. The grid structure is formed by a number of interlocking longitudinal rods and transverse struts, alternate rods of the sides 16, 18 being removable to vary the grid area. In addition the grid area may be reduced by placing screen cloths against the grid structure. The bucket is pivotally mounted on the arms 26 and is tiltable about its point of attachment by the arms 32 on which the bucket is also pivotally mounted. In use, screenable material is placed in the bucket by passing the cutting edge 24 into a pile of the material. The bucket is then raised above the ground level by the arms 26 and its position adjusted by the arms 32 so that its side 18 is substantially horizontal. The bucket is then tilted rapidly back and forth so that the material is screened through the grid structure of the side 18, e.g. into the back of a lorry.
Patent GB-664165-A (GB)
Title: Improvements in or relating to chocks for pit props
IPC: E21D15/60
Filed: 1949-01-25
Abstract: 664,165. Chock releases for mines. VERTRIEB UND VERKAUF AKT.-GES, Jan. 25, 1949 [Feb. 9, 1948], No. 2058/49 Class 20 (ii) A chock release for mines comprises upper and lower wedge-shaped members 2, 4, and a latch member 8, pivoted to the member 2, extending through slots 3, 13 in the members 2, 4 and having an enlarged head 15 engaging lugs 17 on the upper member 4. The latch 8 is locked in its engaging position by an arm 19 pivoted at 18a to the member 4 and engaging a hollow in the head of the latch 8. The locking arm 19 is released by an upward blow on the projecting end of a short rod 21, loosely mounted in a bore in the latch 8 beneath the depression into which the arm 19 fits. The same blow also serves to release the latch 8 and allows the member 4 to slide down the member 2 and collapse the chock. The lever 8 has a nose 11a adapted to engage a bridge piece 7 in the member 2 when the chock is collapsed, to relieve the bolt 9 of load. The lower member 2 may have upwardly projecting flanges at its sides to receive the collapsing parts of the chock without damage to the latch 8 which then lies between the flanges. Two chock releases may be coupled together by the bolt 9 and a distance piece.
Patent GB-110273-A (GB)
Title: Stormproof Ventilating Ridge-tile.
Inventor: WARREN ANDREW
IPC: E04D1/30
Filed: 1917-02-14
Abstract: 110,273. Warren, A. Feb. 14, 1917. Ventilators.-A ridge tile. suitable as a ventilator for farm and other buildings and designed to prevent the blowing in of enow and rain, has a raised portion B, the ends B' of which are turned over the outwardly-turned edges A<1> of the main portion A of the tile, the sides being filled in by the parts C. The tile is preferably formed of burnt clay, and jointing-flanges D are provided.
Patent GB-509900-A (GB)
Title: Improvements in and relating to starting systems for synchronous dynamo-electric machines
IPC: H02P1/46
Filed: 1938-01-22
Abstract: 509,900. Electricity supply. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 22, 1938, No. 2195. Convention date, Jan. 23, 1937. [Class 38 (iv)] [Also in Group XXXVII] Synchronising.-Relates to means for starting and synchronising a dynamo-electric machine 1 by running it up to speed as a motor supplied from the mains 5 with which it is to be synchronised, the current induced in the field winding 3 of the machine being utilised to cause the actuation, at a predetermined ratio of the machine speed to synchronism, of relay means 10 for short-circuiting a discharge resistance 6 in the field circuit and for connecting the field winding to an excitation source 9. According to the invention the relay 10 is quick-acting and its control circuit includes contacts 25 which are periodically closed by mechanical means at a pre-selected point in each slip cycle of the induced field current of the machine. A cam 24 for operating the contacts 25 is carried on a shaft 23 driven by a differential gear mechanism 20 at a speed of one revolution for each slip cycle of the machine 1 relative to the speed of an unloaded synchronous pilot motor 21 connected to the mains 5. Current for a control relay 12 of relay 10 is taken off the field resistance 6 through a rectifier 13, the pulsating current thus obtained causing the relay 12 to rise and keep open contacts 14 in the circuit of relay 10 until the motor reaches the predetermined subsynchronous speed, when the half-cycle of no current through the rectifier is long enough to allow relay 12 to return to its normal position (as shown) at the end of the half-cycle. In order to prevent premature actuation of the relay 10 owing to the initial position of relay 12 closing contacts 14 there is provided in the actuation circuit another pair of contacts 17 which are closed by a relay 16 designed not to close contacts 17 until after contacts 14 have been opened by relay 12, the winding of relay 16 being energised through auxiliary contacts 18 of the mains switch 4 of the machine. The closing of switch 10 to short-circuit resistance 6 also closes contacts 28 of a relay 7 for connecting the winding 3 to the excitation source. Specifications 256,335, [Class 38(iv)], and 384,567 are referred to.
Patent GB-1206712-A (GB)
Title: Improvements in or relating to the separation of mixtures containing two or more of radium actinium and thorium
IPC: C22B60/02
Filed: 1968-01-15
Abstract: 1,206,712. Separating Ac, Ra and Th. COMMISSARIAT A L'ENERGIE ATOMIQUE. 15 Jan., 1968 [30 Jan., 1967], No. 2195/68. Heading C1A. [Also in Division G6] A mixture containing two or more of the elements radium, actinium, and thorium is separated by halogenation and fractional sublimation of the halides. Chlorination may be effected by NH 4 Cl, CCl 4 , SCl 2 , PCl 5 , Cl 2 , CCl 4 -HCl mixture, or Cl 2 -S 2 Cl 2  mixture. Bromination may be carried out with Br 2 , aluminium bromide, or HBr. The process is used for the separation of actinium 227 from neutron-irradiated radium.