baber/WOPTO huggingface dataset:
Patent GB-1017165-A (GB)
Title: Photoengraving resist
IPC: G03G9/12
Filed: 1964-06-09
Abstract: 1,017,165. Electrophotographic processes for producing printing plates. FAIRCHILD CAMERA & INSTRUMENT CORPORATION. June 9, 1964 [July 17, 1963], No. 23816/64. Headings G2H and G2M. [Also in Division H1] An electrophotographic plate comprising a layer containing ZnO in a silicone resin on a metal base is charged electrostatically, exposed and developed by dipping the plate in a suspension of aluminium octoate in iso-octane, heptane and silicone fluid. The liquid is then evaporated to fix the image and the plate heated to 500F to effect polymerization of the image on the film and thereby form a resist pattern. The plate is quenched with water, washed in xylene and heptane to remove non-polymerized material then washed, dried and etched to produce a photoengraving plate. Printed copper electrical circuits may be made by the above technique using a copper laminated base. The additional steps of removing the copper by etching with i.e. Cl 3  or NH 4  per SO 4  and then the polymerized image are necessary. The metal base may be Zn, Mg or Cu.
Patent GB-1431488-A (GB)
Title: Method of and apparatus for inspecting tyres
IPC: G01M17/02
Filed: 1973-05-18
Abstract: 1431488 Inspecting tyres PICKER CORP 18 May 1973 [19 May 1972] 23819/73 Heading B7C [Also in Divisions H3-H5] A tyre inspection apparatus comprises at an inspection station tyre bead engaging discs 113, 113<SP>1</SP> rotatably mounted on hubs 116, 116<SP>1</SP> integral with hollow shafts 114, 114<SP>1</SP>, the shafts being rotatable in housings 110, 110<SP>1</SP> mounted in carriages 104, 104<SP>1</SP> movable towards and away from each other. As illustrated in Fig. 4, a shaft 162 supporting a rotatable X-ray tube 168 is axially slidable in the bore 118 of the shaft 114, whilst bore 118<SP>1</SP> in shaft 114<SP>1</SP> is connected to a compressed air source via a three-way valve. Upon appropriate rotation of the shaft 114 and axial movement of the shaft 162, the X-ray tube 168 is accommodated within recess 132 in the hub 116. The apparatus also includes an X-ray shield 12, and an X-ray detector 290 coupled to a remote television monitor (not shown) for displaying images of the tyre and movable, with rotation of the X-ray tube 168, about shaft 302 by means of a motor-driven friction-wheel 310. In operation, a tyre to be inspected is introduced via shoot 30 which may be curved to reduce escape of X-rays, and is stopped by engagement with roller 68. Ramp 50 is at its highest position (which is adjustable depending on size of tyre) and the tyre is aligned with the discs 113, 113<SP>1</SP>. Extension of rams 111, 111<SP>1</SP> brings the discs into engagement with the tyre beads. Pressure air is then introduced into the tyre and the carriages are moved away from each other by the air pressure against bias of air in the rams 111, 111<SP>1</SP> until stops 244, which have been moved from inoperative positions, where the stops 244 are aligned with sockets 248, to the illustrated operative positions, abut frame members 78. The X-ray tube 168 is moved by retraction of a ram 164 from recess 132 into the space between the discs and the shafts 114, 114<SP>1</SP> are rotated by a motor to locate the X-ray tube in the illustrated position relative to the tyre and to force driven roller 64 and ramp 50 downwardly against bias of air in ram 58 to ensure driving engagement between the roller 64 and the tyre. Continuous or stepwise movement of the X-ray tube and the detector is now effected from bead to bead whilst the tyre is rotated by the driven roller 64. Variation of the tyre position relative to the X-ray tube can be effected to facilitate inspection of the tyre beads.
Patent GB-456607-A (GB)
Title: Improvements in preformed piles
IPC: E02D5/56
Filed: 1935-08-26
Abstract: 456,607. Piles. TURNER, L., 116, Victoria Street, Westminster. Aug. 26, 1935, No. 23863. [Class 68 (ii)] A wooden concrete or like pile of the kind driven by impact is made with recesses, grooves, notches, or the like in its surface in order to increase the holding power. The Figure shows a pile with grooves 4 which extend round the periphery ; each has an upper surface 5 slightly inclined to the horizontal. Reinforced concrete piles may be similarly made. In piles intended to resist extraction, the surfaces 5 are at the lower sides of the recesses The notches or grooves may be rectangular, acute-angled, right-angled, or semicircular in vertical cross-section, and may be arranged helically.
Patent GB-1150719-A (GB)
Title: Arrangements for Controlling the Speed of Asynchronous Electrical Machines
IPC: H02P27/04
Filed: 1966-05-27
Abstract: 1,150,719. Control of A.C. motors; frequency changing. BROWN BOVERI & CO. Ltd. 27 May, 1966 [29 May, 1965], No. 23933/66. Headings H2F and H2J. [Also in Division G3] A squirrel cage induction motor is energized through a frequency converter whose output frequency (and voltage) is controlled by the frequency and voltage of three A.C. signals U R 1, U S 1, U T 1 compounded from two signals each of which is produced in an arrangement comprising a fixed, medium frequency, sine wave generator 10a, 10b whose output is commutated at lla, 11b by a square wave 9a, 9b of a frequency which is varied about that of the sine wave by a control signal Ug(f) related to the speed of the motor. Harmonics are removed from the beat frequency at 12a, 12b and the amplitude of the resulting two signals is controlled by a second control signal Ug(A) applied to multipliers 13a, 13b, e.g. Hall devices. The direction of rotation depends upon whether the square wave frequency is above or below that of the sine wave. The converter comprises thyratrons or semi-conductor devices. Three different ways are described for deriving the control signals U g (f), U g (A). In Fig. 3 (not shown) the actual speed (from a tachogenerator) is compared with a desired speed, and the resulting error signal is further compared with the actual speed, to produce U g (f). U g (A) is derived from U g (f ) by applying it to two function generators designed to result in constant flux in the motor and to compensate for load. U g (A) is also modified to ensure that the actual (measured) motor current does not exceed a predetermined maximum value. In Fig. 4 (not shown) the difference between actual and desired speeds is compared with a further reference (a "desired speed difference") and this further difference is used as the signal U g (f), while U g (A) is derived by passing the speed difference signal through a function generator which relates slip frequency with stator current, U g  (A) in this case being subject to a motor voltage limiting circuit. In Fig. 5 (not shown) U g (f) is produced as in the arrangement of Fig. 4, but for U g (A) the actual motor voltage is compared with a desired value and the difference is used as a reference with which the stator flux (measured by Hall probe) is compared; the resultant "flux error" is used for the signal U g (A).
Patent GB-609823-A (GB)
Title: Air temperature conditioning system
IPC: B64D13/06
Filed: 1945-09-18
Abstract: 609,823. Refrigerating. GARRETT CORPORATION. Sept. 18, 1945, No. 24032. Convention date, Oct. 11, 1944. [Class 29] [Also in Group X] In air cooling systems for air supplied under pressure to an enclosure such as an aircraft cabin, a cooling medium is circulated through a path independent of and in heat exchange relation with the air flow path by an air motor driven by air diverted from it. Air is delivered to a pressurized aircraft cabin 1 through a duct 3 and discharged through a pressure regulating valve 9 of an outlet 7. Air from an inlet 15 is driven by a fan 18 through the jacket 17 of an auxiliary engine 13 driving a supercharger 11 through which air from the jacket passes to the air passages 23 of an evaporator 25 of a refrigeration circuit, where the air passes to the supply duct. In a bye-pass 47, 49 an air turbine 45 drives the refrigerant compressor 29, the flow of air through the bye-pass being regulated by a valve 51 responsive to cabin temperature changes. The refrigerant condenser 35 is traversed by incoming air at inlet 15. Air exhausted through oulet 7 operates a power recovery turbine 59 coupled to the supercharger shaft. Specification 521,623, [Group XXIX], is referred to.
Patent GB-1082069-A (GB)
Title: Velocity determination
IPC: G01S17/02
Filed: 1965-06-04
Abstract: 1,082,069. Optical velocity measurement. LITTON INDUSTRIES Inc. June 4, 1965 [June 26, 1964], No. 24057/65. Heading H4D. The velocity of an object, e.g. an aircraft through a fluid, e.g. the air, is determined by providing on the object, a light source 13 radiating a beam of light 17 into the fluid and a receiver 15, receiving light 18 scattered from said beam by particles of the fluid, and comprising means determining the Doppler shift in the received light due to the velocity of the object. The light source is shown housed inside the aircraft 10 which is moving at a velocity V in the direction of the arrow. The velocity determined by the Doppler shift will thus be V sin #. The light source may be a ruby laser, producing a coherent beam of light 17, polarised at right-angles to the plane of beams 17 and 18, and focused on a point 20 by lens 19 after passing through a quartz or sapphire window 24. The scattered light produced by molecular Rayleigh scattering, passes through second window 27 and falls on a photo-multiplier 31. A small portion of the transmitted beam also falls on the photo-multiplier, via beam splitter 21, mirror 35 and a thin reflective coating on window 27. The scattered light and the portion of the transmitted light also pass through a background noise rejecting filter 30. The photomultiplier acts as a coherent detector and produces at its output the Doppler frequency fd, which is fed over an amplifier 32, to a frequency counter 33, calibrated in velocity. In a modification, Fig. 5 (not shown), the laser is pulsed synchronous with the enabling of the receiver, and the transmitted beam is now focused and inclined backwards against the direction of motion of the aircraft. The receivers' line of reception is at right-angles to said direction. Semi-conductor photo-diodes may be used to detect the scattered light &c.
Patent GB-500465-A (GB)
Title: Improvements in or relating to devices for adjusting the height of the cutters of mowing machines
IPC: A01D34/26
Filed: 1938-08-15
Abstract: 500,465. Lawn-mowers. LANZ AKT.- GES., H. Aug. 15, 1938, No. 24068. Convention date, Oct. 2, 1937. [Class 6 (ii)] A device for adjusting the height of the cutters of a mower consists of a pivoted arm a connected by a rod x to the cutters and provided with a ratchet r. The latter can be rotated to raise the arm a by means of a hand lever f carrying a pivoted pawl g. The pawl g is normally kept disengaged from the ratchet by a fixed stop o, but when the lever f is moved in the direction. of the arrow the pawl g rides over the stop o and engages the ratchet r and rotates the arm a about its pivot c. The lever f when released returns to its initial position under the influence of a spring d, the pawl g being disengaged from the ratchet by the stop u. The arm a. is held in its raised position during the return of the lever f by means of a second spring-controlled lever h having a detent which engages the ratchet r. The lever h is released from the ratchet by foot pressure when the cutters are to be lowered.
Patent GB-957624-A (GB)
Title: Improvements in or relating to nuclear reactor fuel elements
Inventor: WILLIAMS DAVID WILLIAM
IPC: G21C17/04
Filed: 1961-07-04
Abstract: 957,624. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 25, 1962 [July 4, 1961], No. 24194/61. Addition to 916,176. Heading G6C. In the nuclear fuel element of the parent Specification, the insert of nuclear fuel comprises a ring of sintered uranium dioxide. The ring may be made in two or more segments and the groove may be roughened, for example by knurling.
Patent GB-1329926-A (GB)
Title: Feeding of blanks for forming cartons
IPC: B65B43/10
Filed: 1972-05-23
Abstract: 1329926 Feeding sheets AKERLUND & RAUSING AB 23 May 1972 [1 June 1971] 24240/72 Heading B8R [Also in Division B6] A magazine 6 for carton blanks comprises supports 8, Figs. 2 and 3, carrying upright posts 9 for aligning a pile of blanks laterally, and having outermost parts 7 on which the pile rests. Blanks are separated from the bottom of piles in a plurality of magazines by vertically reciprocating suction plates 12 which pass through frusto-conical bores in members 10 so as to draw the blanks downwards into the members 10, which constitute intermediate moulds of a carton-forming apparatus.
Patent GB-368662-A (GB)
Title: Improvements in carts or conveyances for the transport of refuse or the like
IPC: B65F3/00
Filed: 1931-08-28
Abstract: 368,662. Scavengers' vehicles. ROCH, J. B., 8, Rue Magneval, Lyons, France. Aug. 28, 1931, No. 24267. Convention date, Aug. 30, 1930. [Class 108 (i).] A scavengers' vehicle is constructed so as to have two loading stages, one within reach of a person standing on the ground and the second reached by a person standing on a footplate. As shown the vehicle is arranged with lateral parts c, d at a level considerably below that of the central portion and the lateral parts c, d may be provided with lids closing orifices through which refuse can be loaded. These lids g may form the footplate by which the orifices in the central portion can be reached for discharging dust bins. In a modification the loading orifices are provided in the central portion only, the lateral parts serving merely as a footplate.
Patent GB-1170979-A (GB)
Title: Improvements in or relating to Mineral Mining Picks and Holding Boxes therefor.
Inventor: FURBY JAMES
IPC: E21C35/19
Filed: 1967-05-25
Abstract: 1,170,979. Mining pick-securing means. PADLEY & VENABLES Ltd. 22 May, 1968 [25 May, 1967], No. 24303/67. Heading E1F. To facilitate the securing of a mineral-mining pick in a pick box the shank 2 of the pick 1 has formed therein a rebate or recess 7 of which the wall 8, 9 forms a cam surface of a dog leg profile that will ensure, when the shank is entered into a box and the wall is engaged by a pin resiliently mounted in the box to extend into the pick shank-receiving bore of the box, of the locking of the shank in the box. The rebate or recess 7 is so shaped that the wall of the part thereof leading in from the foot of the shank is directed towards the foot of the shank, whilst the wall 8 of the remaining part of the rebate or recess faces towards the head of the shank.
Patent GB-1027223-A (GB)
Title: Improvements in or relating to power plants
Inventor: THOMAS TERENCE FELIX
IPC: F28B7/00
Filed: 1962-06-25
Abstract: 1,027,223. Liquid-cooled steam condensers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 22, 1963 [June 25, 1962], No. 24336/62. Heading F4S. [Also in Division B1] A power plant comprises condensers 5, 7 directly connected to the two separate exhaust casings 1, 3 respectively of the low-pressure turbine stage of a steam turbine and containing in condensing chambers 15, 25 banks of straight horizontal tubes 9, 19 expanded at their ends into tube plates 11, 13 and 21, 23 respectively. Inlet and outlet chambers 17, 27 and 18, 28 are provided on the outside of the tube plates for cooling water which passes consecutively through the tube banks between which is placed a mixing vessel 33. The temperature of bank 9 being lower than that of bank 19 the pressure in chamber 15 is maintained lower than that in chamber 25. Condensate in chamber 15 is transferred by pump 37 to a spray device 39 in the upper part of chamber 25 from which it is returned to the feed water system of the steam generating unit by a pump 41. Non- condensable gases flow from chamber 25 to 15 from where they are removed by a steam driven ejector 47. In other embodiments (Fig. 2, not shown), a single bank of tubes which may have one tube plate mounted on a bellows piece to accommodate differential expansion, passes through 2 or 3 condensing chambers formed by partitions in a single condenser and each operating at consecutively higher pressures, the diameter of tubes may be graduated from large at the top of the bank to small at the bottom.
Patent GB-1460439-A (GB)
Title: Circuit breaker apparatus
IPC: H02H3/33
Filed: 1973-05-22
Abstract: 1460439 Core-balance protective systems ALLEN WEST-EAC Ltd 21 May 1974 [22 May 1973] 24460/73 Heading H2K A core-balance protective system has a current transformer 16 with a plurality of sets 22, 24 of primary windings and a common secondary winding 26, each set of primary windings (such as 22) having windings of the same number of turns and of a different number of turns to other sets (such as 24). One set of primaries may provide a low unbalance setting for its output circuit of say 35 mA. whilst the other set may operate the tripping device at a higher unbalance setting of say 300 mA.
Patent GB-1006797-A (GB)
Title: Improvements in or relating to soil-cultivating implements
IPC: A01B23/04
Filed: 1962-05-10
Abstract: 1,006,797. Agricultural implements. C. VAN DER LELY N.V. May 10, 1962 [June 28, 1961], No. 24478/65. Divided out of 1,006,796. Heading AlB. The subject matter of this Specification is included in that of Specification 1,006,796 but the claims differ.
Patent GB-862698-A (GB)
Title: Heat resistant copolymers
IPC: C08L23/28
Filed: 1959-07-17
Abstract: 862,698. Vulcanizing natural and synthetic rubbers. ESSO RESEARCH & ENGINEERING CO. July 17, 1959 [Sept. 18, 1958], No. 24606/59. Drawings to Specification. Classes 2(6) and 70. 96-92 parts of halogenated butyl rubber is covulcanized with 4-8 parts of unsaturated rubber in admixture with sulphur, polyvalent metal oxide such as zinc oxide, and an accelerator, e.g. a thiocarbamate, thiocarbamic acid, a polyalkyl thiuram disulphide, an organic amine, a polymethylol phenolic resin, mercaptobenzothiazole, benzothiazyl disulphide, a quinone dioxime or stannous chloride. Unsaturated rubbers specified are natural rubber, diene/ styrene copolymers, diene-nitrile copolymers, and polyhaloalkadiene copolymers. Fillers such as clays, silica, alumina, carbon blacks and stearic acid also may be included.
Patent GB-501984-A (GB)
Title: Improvements in the construction of walls and ceilings of buildings
IPC: E04B2/58
Filed: 1937-09-09
Abstract: 501,984. Securing panels or slabs to walls and ceilings. GYPROC PRODUCTS, Ltd., and WRIGHT, G. C. Sept. 9, 1937, No. 24620. [Class 20 (iv)] Means for supporting the panel boards or slabs h of walls or ceil ings from a supporting member f having a flange g directed per pendicularly away from the face of the wall or ceiling con sists of a strip a of ductile sheet - meta which, at one end, is longitudinally cut and bent to provide flanges b for supporting the boards or slabs at their abutting edges, and is provided in one side near its opposite end c with a recess n adapted to receive the flanged portion of the support ing member ; a tongue c, which is provided between the recess n and the adjacent end @ of the strip, is so formed as to be capable of being displaced by a bending operation about a line disposed transversely of the strip from a position (Fig. 1), in which it allows the flanged portion of the supporting member to be inserted in the recess n, to a position (Figs. 2 and 3) in which the tongue c extends towards the first-mentioned end of the strip with the flange g of the supporting member accommodated in a longitudinal recess d provided between the side of the tongue c and the body of the strip. Initially, the end e of the strip is bent downwardly so as to turn the tongue c into a vertical position with the recess n free to be engaged by the supporting member ; after this engagement, the end e. is bent upwardly so that the tongue retains the flange g of the supporting member in the recess d, as shown in Figs. 2 and 3. The length of the recess n is equal to the height of the flange g, and the width of the recess d is equal to the thickness of the flange g. When the supporting members are of plain angle or channel crosssection, the tongue c is somewhat shorter than the recess n. The flanges b, which are bent in opposite directions, bear against, and retain in position, a joint cover strip i which rests against the outer faces either of the slabs h or of decorative slabs k provided against the slabs h. Specification 502,033 is referred to.
Patent GB-664013-A (GB)
Title: Improvements in combined can and heater
IPC: B65D81/34
Filed: 1949-09-26
Abstract: 664,013. Jacketed cans. KATZ, L. Sept. 26, 1949, No. 24646/49. Class 66. [Also in Group XIII] A jacketed can for heating food by chemical action has an inner compartment 1 for the food, surrounded by, e.g. quick lime 15, and held in place by a ribbed base 16 on which it rests, and by a neck-ring 25 seamed to the outer wall 14 and resting over the bead of the inner wall; the neckring 25 having circular scorings &c. 27 readily punched open to allow water poured into the annular channel provided by the neck-ring 25 to enter the jacket space where it is distributed with the aid of absorbent paper 17. The openings at 27 register with openings in a cover-ring 29 which fits over the neck-ring 25 and may be rotated to close the openings, e.g. when food is taken from the compartment 1. The food compartment may have a lever lid 9, or may have a seamed end to be opened by a tin-opener.
Patent GB-424504-A (GB)
Title: Improvements in or relating to endless conveyors
IPC: B65G23/44
Filed: 1933-09-06
Abstract: 424,504. Endless conveyers. GARDINER'S CONVEYORS, Ltd., and GARDINER, C. W., 61, Mark Lane, London. Sept. 6, 1933, No. 24707. [Class 78 (i)] The bearing housings 1 of the tensioning drum are slidable in guides 2 and are connected by springs 4 to an adjusting screw 6. Specification 374,862 is referred to.
Patent GB-824737-A (GB)
Title: Rubber draft gears
IPC: B61G9/14
Filed: 1957-08-06
Abstract: 824,737. Friction-damped rubber-springs. MINER Inc., W. H. Aug. 6, 1957 [Aug, 27, 1956], No. 24716/57. Class 108(3) Shell A, Fig. 1, shown in cross-section in Fig. 3, contains rubber cushions C, friction units D and plunger B retained by bolts 30. Each unit C comprises metal plates 32, Fig. 1, bonded to a rubber pad 34 which has a peripheral groove 36. Frictional units D comprise metal plates 38 bonded to the sides of rubber pads 40 and friction shoes 46 bonded to the ends of rubber pads 40. In operation compression of units D causes friction shoes 46 to engage the inner surface of casing A to provide friction damping.
Patent GB-361403-A (GB)
Title: Improvements in means for propelling ships by reaction jets
IPC: B63H11/00
Filed: 1930-08-19
Abstract: 361,403. Jet propulsion. ANGELINI, O., 61, Via Coronari, Rome. Aug. 19, 1930, No. 24766. [Class 114.] The exhaust gases from an internal-combustion engine are compressed in a reservoir and by means of the valve gear 7, 8, which alternately opens and closes the inlet and outlet ports 9, 10, are led to and eject the water from a chamber 4 located below the water level and terminating aft in the flared outlet 12 through which the water returns on the opening of the exhaust ports 10 in communication with the exit pipes 5. The chambers 4 may be arranged in pairs with alternate operation.
Patent GB-444886-A (GB)
Title: Improvements in or relating to electrical oscillation generators comprising electrondischarge devices
IPC: H03B5/10
Filed: 1934-08-30
Abstract: 444,886. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and WRIGHT, G. M., Lordlands, Little Baddow, and RUST, N. M., 109, London Road, both in Chelmsford, Essex. Aug. 30, 1934, No. 25025. [Class 40 (v)] Relates to means for vary. ing the degree of reaction in a back-coupled valve with. out affecting the frequency of the oscillations generated The valve is of the variable mu type and reaction is con, trolled by altering the effective grid-bias, and therefore the amplification factor. As shown, the usual reaction-control condenser 3a is fixed instead of variable, and the desired effect is produced by moving the tapping point 11 along a grid-bias potentiometer 12. The tapping 11 is connected to the grid through a high-frequency choke 10.