baber/WOPTO huggingface dataset:
Patent GB-581536-A (GB)
Title: Improvements in or relating to hydraulic pressure applying apparatus for tube expanding purposes
IPC: B21D39/06
Filed: 1944-09-01
Abstract: 581,536. Hydraulic intensifiers. SULZER FRERES SOC. ANON. Sept. 1, 1944, No. 16680. Convention date, Nov. 16, 1943. [Class 69 (ii)] Apparatus for applying hydraulic pressure to tube expanders comprises a pressure multiplier having two pistons which are caused to act in turn by a reversing valve, and each piston sets in operation a pressureapplying plunger which consists of two parts with a fluid piston between them. Water entering the system through a pipe 43 and passing non-return valves 35, 36 is forced at high pressure by plungers 32, 34 operating alternately and preferably with some overlap, through a conduit 37 to a tube expanding tool 38. The plungers 32, 34 are actuated by press plungers 31, 33, having lost-motion connections therewith and being connected to frames 60 carrying multiplying plungers 29, 30. These plungers are actuated alternately by highpressure oil through pipes 26, 27 controlled by a reversing valve 24 to which the oil is supplied past a cut-off valve 47 actuated electrically on depression of.one or other of two press buttons 48, 49 adjacent the tube expander 38. Oil pressure is generated in two stages. A pump 2 delivers oil to a second pump 5 past a relief valve 6 having connections 8, 9 to the system to constitute the low pressure side thereof. The pump 5 delivers high-pressure oil past an accumulator 15 and pressure regulating valve 20 to the cut-off valve 47 whence it flows through a conduit 23 to the centre of the reversing valve 24. This valve, in its upper position directs the oil through the pipe 26 to the chamber of the multiplying plunger 29 and opens the corresponding passage 27 from the second multiplying plunger 30 to a pipe 46 leading to the low pressure conduit 9. The pressure oil forces down the plunger 29 compressing a return spring 57 and drawing down the frame 60 and plunger 31. A conduit 41 connected to the low pressure conduit 8 supplies oil to fill the space between the plunger 31 and the water plunger 32 which thus moves solidly with the plunger 31, escape of the oil. being prevented by a non-return valve 42 in the conduit 41. Simultaneously, return spring 56 forces the plunger 30 upwards, discharging the oil above it into the passage 27. A linkage 28 connects the plungers 29, 30 with a frame 85 carrymg the reversing valve 24 between springs 86, 87. As the plunger 29 desceads, it draws down the frame 85, Fig. 5, compressing the upper spring 87 until a projection 96 trips a pawl 94 which retains a locking lever on the valve 24. The spring then reverses the valve, a similar mechanism at the lower end of the valve operating to return the valve when the second plunger 30 has descended. In a modification, the water plunger is disposed beside and parallel to the oil plunger 31.
Patent GB-258935-A (GB)
Title: Air, land and water craft
IPC: B64D27/00
Filed: 1925-06-30
Abstract: 258,935. Harpstrite, A. J., and Harpstrite, F. June 30, 1925. Steering.-An aircraft having an engine and propeller shaft tiltable vertically to various angles has an arcuate guide for a shaft bearing near to the propeller and means are provided for locking the bearing to the guide in any position. The engine 68 is mounted on trunnions 67 and the propeller shaft extends through a tube 73 to a double ball-thrust bearing enclosed in a casing 72 having trunnions 74 engaging a slide-block 75. The block 75 moves in a guide 76 concentric with the trunnions 67 and a rack 78 on the block is engaged by a pinion 79 moved by cords 80 extending to the pilot's seat. The block is locked to the guide 76 by a wedge 85, Fig. 2. operated by a push-rod 84 moved by screw mechanism in the pilot's cockpit. There may be a clutch between the engine and the propeller shaft.
Patent GB-384669-A (GB)
Title: Improvements in or relating to clamps for rods or tubes of circular cross-section
IPC: E04G7/24
Filed: 1931-06-09
Abstract: 384,669. Clamps. REYROLLE & CO., Ltd., A., Hebburn-on-Tyne, BRAMWELL, E. E., 27, Roxburgh Terrace, Whitley Bay, Northumberland, and SLORICK, W. A., 20, Barrow Street, Hebburn-on-Tyne. June 9, 1931, No. 16745. [Class 44.] A clamping element for use in clamping rods and tubes together comprises an arcuate portion A or T and projecting end lugs B and C, or U and V, respectively, the lug B or U at one end having its inner face lying substantially in a radial plane of the rod or tube clamped, while the lug C or V at the other end lies parallel to a radial plane but at a distance equal to the thickness of the lug from it. The element may have the lugs disposed at 180‹ from each other, as shown in Fig. 1, or at 90‹ from each other, as shown in Fig. 11, and the two types may be used separately or in combination, the clamping elements being drawn together by bolts to effect clamping. Rods and tubes may be clamped in various ways by the use of these elements, and Figs. 7 and 8 show tubes K and L clamped to a tube M at right-angles and on opposite sides and another tube N clamped separately at an intermediate position all the tubes being coplanar, the lugs, at the ends of the clamping elements being disposed as shown so as to be drawn together by single clamping bolts such as O. For joining tubular members whose axes are not coplanar, the clamping elements are disposed as shown in Fig. 13, in which the elements A and T are shown in combination to join tubes X, Y, W.
Patent GB-167699-A (GB)
Abstract: 167,699. Darnley, P. H., and Richards, B. Sept. 16, 1920. Teaching arithmetic.-A device for facilitating the learning of multiplication and division comprising two superimposed hollow cylindrical members a, b, relatively rotatable, of which the inner member b is provided with two sets of tabulations g, h one for the products and the other for the multiplier and the outer member a is provided with a single set of tabulations f for the multipiicand and with a series of openings e arranged in a helical line, has the inner member extended at its left end to serve as a handle which can be gripped when the device is in use, and has the tabulations so arranged that the resultant product can be obtained by reading from left to right. When the members a and b are made of metal they may be rolled or bent from strips and jointed as shown at Fig. 2, the member a is freely rotatable but is prevented from movement axially by collars or ridges c formed on the projecting end portions of the member b. Caps j, k are provided of which one k is removable so that its member b may serve as a holder for pens, pencils &c. The device may be employed as a ruler. Reference has been directed by the Comptroller to Specification 7004/98.
Patent GB-1000519-A (GB)
Title: Surface treatment of oxymethylene polymers
Inventor: RIELLY FRANCIS J
IPC: C08J7/14
Filed: 1962-05-02
Abstract: An oxymethylene polymer surface is treated with an oxidizing acid to improve the adhesion of a subsequently applied coating.  A treatment time of less than 10 seconds is usually used. The polymer may contain oxyalkylene groups, e.g. oxyethylene, up to 20% of the chain. Specified acids are chromic nitric and sulphuric acids, their mixtures and mixtures with non-oxidizing acids, e.g. hydrochloric acid and glacial acetic acid.  The acid may be applied by dipping, spraying or brushing.  The treated surface may be given a further treatment to produce cross-linked molecules thereon by reacting with formaldehyde from the polymer, e.g. by treatment with a phenol solution containing potassium hydroxide as catalyst and heating to form a surface coating of phenolformaldehyde resin.  The phenol may be replaced by urea, melamine, casein, aniline, cresols or xylenols.ALSO:Oxymethylene polymer surfaces which have been treated with an oxidizing acid to improve the adhesion of a subsequently applied coating and which may have been further treated with a compound which forms a resin with formaldehyde (see Division C3) are coated with an ink lacquer or metal.  It is preferred to apply a priming coat of clear lacquer before this coating and a clear lacquer.  In examples, plaques of oxymethylene-oxyethylene copolymer surface treated as above, are coated with a clear methyl methacrylate lacquer, baked, coated with aluminium by vacuum metallizing, and then coated with a top coat of the clear polymethyl methacrylate lacquer.
Patent GB-567541-A (GB)
Title: Improvements in alternating current rectifiers
IPC: H02H7/12
Filed: 1943-10-15
Abstract: 567,541. Rectifying alternating current. STANDARD TELEPHONES & CABLES, Ltd. Oct. 15, 1943, No. 16956. Convention date, Nov. 5, 1942. [Class 38 (ii)] In rectifying arrangements comprising a number of rectifying elements 5 of the selenium or copper-oxide type in parallel in each branch of the circuit, a fuse 12 is provided in series with each rectifying element to prevent short-circuiting of sound elements by a breakdown in one element. Single and polyphase bridge arrangements are described with reference to Figs. 6 and 7 (not shown).
Patent GB-1260418-A (GB)
Title: PROCESS FOR PREPARING alpha-1,6-GLUCOSIDASE
IPC: C12R1/365
Filed: 1969-04-01
Abstract: 1,260,418. α-1,6-Glucosidase. HAYASHIBARA CO. 1 April, 1969 [1 April, 1968], No. 17102/69. Heading C3H. A process for the production of α-1,6-glucosidases comprises inoculating one or more strains of bacteria belonging to the genera Agrobacterium, Azotobacter, Lactobacillus, Leuconostoc, Mycobacterium, Nocardia, Pediococcus, Sarcina, Serratia, Staphylococcus, Streptococcus, Bacillus, Micrococcus or Erwinia into a culture medium composed of a nitrogen source, adding a suitable carbon source and necessary inorganic salts, and culturing the bacterium to produce an α-1,6-glucosidase. Species of each genus are exemplified. The enzyme may be precipitated from the culture fluid with ammonium sulphate and purified by dialysis.
Patent GB-460002-A (GB)
Title: Improvements in vacuum cleaners
IPC: A47L5/36
Filed: 1936-06-19
Abstract: 460,002. Vacuum cleaners. ELECTROLUX, Ltd. (Aktiebolaget Elektrolux) June 19, 1936, No. 17113. [Classes 8 (i) and 8 (ii)] A vacuum cleaner comprises an enclosed dust collector and filter 11 and a cover 17 allowing its introduction and removal, together with a separate socket 26 for the attachment of a suction tool, near to and on the same face as the cover 17. The cover and socket &c. may be disposed in a frame 12 having a hole for the neck of the dust bag which is held down by an internal apertured wall 20 of the cover ; a second wall on the cover has an opening 21 for the passage of air to the bag from the nozzle. The hinged cover may be completely removable.
Patent GB-618259-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03F1/50
Filed: 1946-06-06
Abstract: 618,259. Thermionic valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. June 6, 1946, No. 17265. Convention date, June 26, 1945. [Class 40 (vi)] The anode circuit of an amplifier valve V1 includes an additional valve V2 with high internal A.C. resistance and low internal D.C. resistance, so that the D.C. voltage drop in the anode circuit remains small when the amplifier is working into a high impedance external load. The external load may be connected between the anodes of the valves V1, V2 or between the anode of the amplifier valve V and the negative H.T. terminal. The two outputs are of opposite phase and may be used simultaneously. Negative feedback to the additional valve V2 is provided by resistors R1, R2, R3 and condenser C1. The bias voltages for the screen and control grid of each pentode valve V1, V2 may be provided by the voltage drop across suitable resistances or by a separate battery.
Patent GB-1026316-A (GB)
Title: Improvements in or relating to photographic materials
Inventor: DERSCH FRITZ
IPC: G03C1/34
Filed: 1964-04-27
Abstract: 1,026,316. Stabilizing photographic emulsions. GENERAL ANILINE & FILM CORPORATION. April 27,1964 [May 16,1963], No. 17282/64. Heading G2C. 3-Mercapto-benzoic acid is used as a stabilizer and anti-foggant for silver halide emulsions. It may be incorporated into the silver halide emulsion or an adjacent layer or added to a processing bath such as the developer.
Patent GB-570309-A (GB)
Title: Improvements in or relating to electric secondary batteries
IPC: H01M4/76
Filed: 1943-10-21
Abstract: 570,309. Batteries. FULLER, L., and SUDLOW, E. W. Oct. 21, 1943, No. 17382. [Class 53] In a dry secondary battery having two or more electrodes, each outer electrode comprises an insulating tray 19 containing a lead sheet 22 to which is applied active material to completely fill the tray. The trays are placed together with their bottoms on the outside and a porous separator 13, for example, of kieselguhr between them, the assembly being forced into a box 10 and compacted so,that the box is completely filled. The cell is closed by an unglazed porcelain member 14 and a sealing layer of pitch 18 having a gas vent 17. The lead sheets 22 have projecting lugs 23 passing through apertures in the sides of the trays 19 to form terminals 15. The lead plates may have short spikes 30, Fig. 3, extending up to one third or one half of the thickness of the active material. Specifications 1890/01, [Class 531, and 561,056 are referred to.
Patent GB-1123180-A (GB)
Title: Improvements in or relating to communication systems
IPC: H04B3/10
Filed: 1967-04-17
Abstract: 1,123,180. Pilot controlled A.V.C. systems. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 17 April, 1967 [20 April, 1966], No. 17432/67. Heading H4R. In a two channel communication system using the pilot operated level control system of Specification 1,084,651, in which the gain of the repeaters is controlled by a frequency modulated control signal transmitted along with the information signal, and in which the frequency of the control signal transmitted from one terminal to control the gain of repeaters in one channel is varied in accordance with signals, transmitted over the other channel, which depend on the received level at the other terminal, a comparison circuit is provided at one or both terminals to comprise the frequencies of the control signals in each channel and to give an alarm if the frequencies differ by more than a predetermined amount, indicating a fault in one channel. Fig. 1 shows a transmission system substantially identical to that shown in Fig. 2 of Specification 1,084,651, with the addition of the comparator circuits 46 and 46<SP>1</SP>. Each comparator circuit comprises two discriminator circuits, 47 and 48, connected to receive the control signal from a respective channel, each including a capacitor 49 or 50 charged by capacitors 54 or 55 and discharged by capacitors 56 or 57. The frequency discriminators 47 and 48 are connected in a bridge circuit with zener diodes 51 and 52 and it is shown that the current through the contact ammeter 53 is approximately proportional to the frequency difference between the control signals. Therefore if the frequency difference exceeds a predetermined amount the contact ammeter makes one or other of its contacts to operate an appropriate alarm. With two comparators, one at each terminal, the operating points of the contact ammeters are preferably displaced so that the alarm is given first at one particular terminal for an increase in damping in a respective direction of transmission.
Patent GB-564699-A (GB)
Title: Improvements in gauges for taking internal measurements
IPC: G01B5/08
Filed: 1942-12-08
Abstract: 564,699. Linear - dimension gauges. WILLETT, V. W. [trading as LUSHINGTON TOOL MANUFACTURING CO.]. Dec. 8, 1942, No. 17439. [Class 106 (ii)] A gauge for internal measurements comprises a tube 9 slidable against spring pressure in a tube 8 fixed in a collar 7 having a spigot 6 secured in a handle 1. The dimension of the collar 7 in the direction of the axis of the tube 8 is not greater than the diameter of the upper part of the handle 1. The tubes and the handle may be made from steel tubing. When the device has been inserted in the hole to be gauged and the ends 10, 11 of the tubes 8, 9 have been engaged with the sides of the hole, a screw plug 5 is turned to press a rod 13 against a groove 15 in the slidable tube 9 to lock this tube in position before the device is withdrawn from the hole. A bush 14 prevents the plug 5 being screwed in far enough to over-stress the rod 13. The end 16 of the groove 15 engages the rod 13 to limit the outward movement of the slidable tube 9. The lower end of the rod 13 may have a reduced portion passing through the bush 4 so that the rod cannot move downwards far enough to disengage its upper end from the groove 15. A neck 22 on the handle 1 prevents the plug 5 from being unscrewed too far. In a modification, Fig. 5, the upper end of the rod 13 has a reduced portion 18 passing through the fixed tube 8 to prevent the rod being disengaged from the groove 15 in the slidable tube 9. In a further modification, the inner end of the groove has a recess which, when the slidable tube is fully extended, engages a reduced part on the rod to prevent withdrawal of the latter.
Patent GB-1524926-A (GB)
Title: Rack for supporting poultry and meat during roasting
IPC: A47J43/18
Filed: 1977-04-27
Abstract: 1524926 Food cooking rack G SPANEK and D C SPANEK 27 April 1977 [28 June 1976] 17556/77 Heading A4D  A rack for supporting food products during cooking comprises upper and lower members 21, (11) fitting telescopically one within the other, the lower member (11) comprising a base ring 12 and upstanding rods 13 supported by rings 19, (20), and the upper member having rods 23 which slide into the rods 13 and depend from a top ring 25 and an outer ring (22). The rack includes a perforated trough 31 which receives liquid and allows it to drip over the food product for basting. The rack, with a separate skewer 36, may be used to support a fowl, Fig. 2 (not shown) which is pierced by the rods 13, 23, or it may support bacon strips, Fig. 4 (not shown). In Figs. 5, 6 (not shown) the lower member 21 is used alone to support chops (47) or a coil of sausages (48).
Patent GB-861919-A (GB)
Title: Revaporization of liquefied gases
IPC: F17C9/04
Filed: 1959-05-22
Abstract: 861,919. Revaporization of liquefied gases. CONCH INTERNATIONAL METHANE Ltd. May 22, 1959 [June 11, 1958], No. 17558/59. Class 8(2). Revaporization of liquefied natural gas consisting mostly of methane is effected by forcing it by a pump 12 from a storage reservoir 8 through a heat exchanger 16 traversed by a flow of a heat transfer medium e.g., gaseous propane which is thereby condensed and is fed e.g., by gravity through a second heat exchanger 38 in countercurrent flow to a readily available fluid at a higher temperature e.g. air or sea water ; the so vaporized propane then being returned to the exchanger 16 to complete a closed cycle. Methane vapour leaving the exchanger 16 through a duct 18 is freed of residual liquid in a separator 20 and is discharged through a duct 24 to the point of use e.g. a furnace whilst separated higher boiling liquid impurities are returned through a duct 22 to the pump 12. Methane from the gas space of the reservoir 8 is forced by a compressor 28 actuated by a gas engine 30 through a duct 32 to the duct 24. In a modification the revaporized heat transfer medium is expanded in a turbine and the condensed medium leaving the methane vaporizor is pumped into the sea-water heated boiler for revaporizing the heat transfer medium.
Patent GB-511640-A (GB)
Title: An improved thermostat
IPC: H01H37/54
Filed: 1938-06-14
Abstract: 511,640. Thermal switches. METALS & CONTROLS CORPORATION. June 14, 1938, No. 17698. Convention date. June 25, 1937. [Class 38 (v)] [Also in Group XIII] A thermostatic switch responsive to rapid changes of temperature comprises two dished composite metal discs 35, 37 of the type shown in Specification 491,390, mounted so as to move in opposite directions in response to temperature changes. The elements 35, 37 are supported, respectively, at their peripheries by collars 39 mounted on bolts 41 and in the groove between the annular rings 47, 49, 51. At their centres the discs support a hub 65 which carries a lug 31 at its lower end. Whilst the disc 35 is open to the atmosphere, the disc 37 is shielded by plates 43, 53. A rapid rise of temperature causes the disc 35 to move the hub 65 before the disc 37 is affected, causing the lug 31 to act upon a spring 21 to close an electric switch 23, 19 mounted in the base 1. In a modification a third thermostatic disc is provided below the shielded disc to operate at a predetermined temperature in the case of a slow rise in temperature when the two disc combination would not operate. As a further modification the plates shielding the enclosed disc are made of a material of such heat conducting properties as to enable the discs to return quickly to their original position after operating. The device may be further modified by arranging the engagement between the hub and the two discs so that the thermostat operates when the temperature changes and also when a predetermined temperature is attained.
Patent GB-351719-A (GB)
Title: Improvements in sliding doors, gates or partitions
IPC: E06B9/06
Filed: 1930-06-07
Abstract: 351,719. Sliding doors and partitions. EXPRESS LIFT CO., Ltd. and KIRKPATRICK, J. M., Greycoat Street Works, London. June 7, 1930, No. 17744. [Class 20 (iii).] A sliding door or partition comprises a number of contiguous pickets 11 articulated by coacting castings 12, 13 which are formed on alternate pickets and are provided with apertures 14 through which continuous horizontal coiled springs 32 are passed. The ends of the springs are adjustably anchored in the end pickets. The apertures are formed with a straight side 15 and with a curved side 16, the curved sides lying towards the inner side of the curve of the track 19 along which run the overhead rollers 18 carried by some of the pickets. The rollers are maintained in alignment with the track by the springs 32 and shaped apertures 14. A cord, anchored at its ends, may be passed longitudinally through the springs to prevent undue separation of the pickets.