baber/WOPTO huggingface dataset:
Patent GB-1249859-A (GB)
Title: Improvements in or relating to vacuum testing of containers
Inventor: HUNT ROBERT MICHAEL
IPC: G01M3/36
Filed: 1968-01-12
Abstract: 1,249,859. Testing packages. DEFENCE, SECRETARY OF STATE FOR. 8 Jan., 1969 [12 Jan., 1968], No. 1819/68. Heading B8C. [Also in Division G1] A base 30, Fig. 3, mounted on pivoted links, Fig. 2 (not shown), may be raised to close off several interconnected vacuum chambers 8 (only one of which is shown), the base being held against a gasket 6 by means of an electrical switch operating a ram. Gas-tight plastics containers 23, Figs. 4, 6, previously positioned between the open base and heads 10 of probes 9 are then caused to expand, Fig. 5, by reducing the pressure in each chamber 8, and as they expand they lift up the probes and electrical contacts 14 which in turn lift up contacts 16 sliding on posts 18. When the container 23 is fully expanded the contact 16 is raised by " x " so that when the pressure is restored in 8 and then once again lowered, the container 23 if it is not leaking should deflate and expand again to raise the contact by the same amount " x " to remake contact 16 and light a green lamp. If this does not happen then the container has a leak and a red lamp is lit. If the container has a bad leak then no first expansion will take place and a relay and a red lamp are 'operated when contacts 14 and 20 do not part.
Patent GB-418478-A (GB)
Title: Improvements in or relating to electrically driven appliances for the care of the body
IPC: H02K23/66
Filed: 1934-01-18
Abstract: 418,478. Casings. ELECTROFAN GES., 13, Sellerstrasse, Berlin. Jan. 18, 1934, No. 1823. Convention date, Jan. 18, 1933. [Class 35.] A revolving tooth brush or other body cleaning or polishing implement is driven by a small electric motor 7 with permanent magnets 8 housed with a battery 6 in a common casing 2. A slidable ring 22 surrounding the casing works the switch contact 20 for connecting the battery and motor. Specification 407,532 is referred to. The Specification as open to inspection under Sect. 91 also states that the device is applicable to apparatus for treatment of the skin, hair and nail cutters and shaving appliances. This subject-matter does not appear in the Specification as accepted.
Patent GB-633223-A (GB)
Title: Improvements in or relating to magnetic chucks and work-holders
IPC: B23Q3/154
Filed: 1948-01-23
Abstract: 633,223. Magnetic work-holders. NEILL & CO. (SHEFFIELD), Ltd., J., and BOWER, W. L. Jan. 23, 1948, No. 2089. [Class 60] [Also in Group XXXV] The working-surface poles 2, 3 of a magnetic chuck or work-holder diminish in width and thickness in the direction of the flux so that a transverse section at any point is at least equal in area to the operative surface on the opposite side of the section to the source of flux. The poles, which interfit and have a white metal separator shown at 4 and 7 in Fig. 4, are held in assembled relation by rivets 8. To de-magnetize the surface 1, a permanent magnet 12 provided with a handle which also serves as a pointer is rotated through 90 degrees, a slot 13 and a locked screw 16 serving to limit this movement. The work is positioned by plates 20 which are secured to sides of the surface 1 and are adjustable for height. The surface 1 may be circular and the taper of the poles may vary so that their ends are of uniform thickness where they emerge on the circumference. The ends of alternate poles may be connected as shown in Fig. 15. For large surfaces, the multiple construction of Fig. 16 is used. The holder may be fed by an electromagnet.
Patent GB-1474295-A (GB)
Title: Apparatus for generating power from wind currents
IPC: F03D1/04
Filed: 1975-01-17
Abstract: 1474295 Wind motor NATURAL ENERGY SYSTEMS Inc 17 Jan 1975 [30 Jan 1974] 2109/75 Heading FIT  A wind motor 10 comprises a bladed rotor 46 at the throat of a Venturi-shaped casing 12 carrying a fin 54 to maintain the front end 14 of the casing pointed into the wind, the casing being mounted on a platform 24 bearing-mounted at the top of a tower 38. As shown, the rotor is mounted on an electrical generator 42 on a post 40 arranged eccentrically on platform 24. Again, Fig. 5, (not shown), the platform is in the shape of a cross to reduce effect of vertical wind currents. Also, Fig. 6, (not shown), the electrical generator may be mounted at the bottom of the post, and driven by a mechanical transmission or be replaced by a mechanical transmission driving a mechanical device. One or more inlet vanes 52 may be provided.
Patent GB-1075561-A (GB)
Title: Improvements relating to fifth wheel connections for semi-trailer road vehicles
IPC: B62D53/08
Filed: 1966-01-17
Abstract: 1,075,561. Fifth wheel connections. FRUEHAUF CORPORATION. Jan. 17, 1966 [March 17, 1965], No. 2132/66. Heading B7T. A fifth wheel connection for a semi-trailer road vehicle comprises a lower ball bearing race 44 secured to a lower plate 50 secured to the frame 52 of a tractor, an upper ball bearing race 42 secured to an upper plate 30, and ball bearings 46, 48, a skid plate 12 being pivotally supported from the upper plate 30 by horizontal shafts 24, 26 supported in bearings 28, 29 and supports 16, 18 and 20, 22, and having a pair of legs 14 defining a slot for a kingpin (not shown) of a trailer (64), Fig. 1 (not shown), the skin plate 12 being formed with a flange 60 at the front end for engagement on coupling with the front portion (62) of the trailer to effect rotation of the plate 12 about the common vertical axis of the races 42, 44 into a position wherein the kingpin slot is maintained aligned with the longitudinal axis of the trailer. A connector (80), Fig. 1 (not shown), on the front portion (62) of the trailer (64) is received in a socket (79) in an air brake and electrical line receptacle (70) mounted on the flange 60 which has a conical seat (78) facilitating entry of the connector (80).
Patent GB-563435-A (GB)
Title: An improved clamping or securing device
IPC: F16B2/16
Filed: 1943-02-09
Abstract: 563,435. Riveting. SPRINGATE, M. S. Feb. 9, 1943, No. 2139. [Class 83 (iv)] A device for clamping articles such as plates together when access can be had to one side only, comprises a bolt 10, with a Banged clamping member 12 to engage one side of the plates, and a cupshaped nut 13 passed through holes in the plates. Bores in the flange of the nut receive balls 15 and are of such size that the balls cannot pass entirely through. Slots 16 in the member 12 expand the balls, as the bolt is secured into the nut, to engage the other side of the plates. A split ring 18 or like device limits the movement of the nut. In a modification, the bolt and member 12 are integral.
Patent GB-400038-A (GB)
Title: Improvements in and relating to light mixing apparatus
IPC: F21V7/08
Filed: 1933-01-23
Abstract: 400,038. Light-mixing apparatus. HOLOPHANE, Ltd., Elverton Street, Vincent Square, London.-(Assignees of Dorey, W. A. and Dixon, H. M. ; Newark, Ohio, U.S.A.) Jan. 23, 1933, No. 2147. Convention date, July 1, 1932. [Classes 75 (ii) and 75 (iv).] Light reflected by trough-shaped r eflectors ; different illuminants for separate or simultaneous use.-A lightmixing apparatus comprises two or more longitudinal light sources each disposed substantially along a focal line of a cylindrical reflector of substantially elliptical contour, and a longitudinal light-emitting aperture. The light sources may be different in colour or other operating characteristics and they may comprise rectilinear filament bulbs, mercury vapour, neon, or other electric discharge tubes, or linearly arranged and closely spaced substantially point sources. The reflector may be made of prismatic or silvered glass, polished metal, or other specular or slightly matte finished material, and it may be slightly corrugated or rippled. The light may be emitted directly by the reflector but the aperture is preferably closed by a flat or trough-shaped glass plate which may be clear, diffusing, ribbed, or prismatic. In the form shown in Fig. 2, longitudinal light sources are arranged substantially along the focal lines 11, 12 of a semielliptical cylindrical reflector 10 which is provided at its edges with cylindrical reflectors 15 of modified section and is fitted with a rectangular prismatic glass plate 16 disposed parallel to the major axis of the reflector 10. In a modification, Fig. 5 (not shown), the glass plate is at right-angles to the major axis. Fig. 3 shows a cylindrical reflector 22 of circular section arranged concentrically with the focal line 24 of a semi-elliptical cylindrical reflector 21, and a glass plate 25 disposed between the reflector 22 and a cylindrical reflector 23 of modified section. In a further modification, Fig. 4 (not shown), a pair of such circular and elliptical cylindrical reflectors are combined and have a common focal line along which a longitudinal light source may or may not be arranged.
Patent GB-1025280-A (GB)
Title: Process for fixing powdery additives on granular thermoplastics materials
IPC: C08J9/10
Filed: 1964-01-17
Abstract: Particles of a thermoplastic such as polyethylene or polypropylene are coated with a blowing agent such as azodicarbonamide, N,N1 - dinitrosopentamethylenetetramine or p,p1-disulphonylhydrazide diphenyl ether which has been rendered tacky by admixture with a tacky polymer.ALSO:Powdery additives are durably fixed on granules of thermoplastics material by treating the additive with a solution or dispersion of a tacky polymer, eliminating the solvent by evaporation and mixing the so-treated additive with the granules of thermoplastics material.  The additive may be a blowing agent e.g. azodicarbonamide, N, N1-dinitroso-pentamethylenetetramine or p,p1-disulphonylhydrazide diphenyl ether; a stabilizer; or an anti-static agent e.g. phosphoric acid N-methyl N-stearyl amide diamide.
Patent GB-1034544-A (GB)
Title: Basic refractory product and process of manufacturing the same
IPC: C04B35/03
Filed: 1964-01-17
Abstract: A basic refractory composition comprises particles of a calcined magnesia having an SiO2 content of 0.05-2% and a lime content sufficient to form dicalcium silicate with the silica and to have formed dicalcium ferrite with the iron oxide in the magnesia, together with a binding agent and 1-10% of chromic oxide in a form that will react with the dicalcium ferrite at a temperature greater than 1000 DEG  C. to produce a high temperature bond, the chromic oxide being present in at least sufficient quantity to form said bond.  The bonding agents specified are sulphuric acid, magnesium sulphate, magnesium chloride, sulphite wax liquor, starch or dextrine.  The composition may be pressed into bricks under pressures exceeding 15,000 p.s.i. and thereafter treated with carbon dioxide. The composition may be used as a ramming mix when water or tar may be added.
Patent GB-324234-A (GB)
Title: Improvements relating to spools or reels for holding woven tapes or tape-plasters and like articles
IPC: A61F15/00
Filed: 1929-01-24
Abstract: 324,234. Jones, J. W., and Jones, E. J. Jan. 24, 1929. Bobbins or spools.-The rims R of spools or reels, such as are used for holding woven tape plasters, serve as sliding tracks for guiding a backwardly moving combined measuring and cutting off tool MCT. The rims may be opened to receive the side of the tool as in Fig. 2, or the tool may have clips EC, Fig. 4, sliding on the rims.
Patent GB-1515253-A (GB)
Title: Fish rearing enclosure with a readily closeable mouth
IPC: A01K61/00
Filed: 1977-01-21
Abstract: 1515253 Fish enclosures YOSHIDA KOGYO KK 21 Jan 1977 [24 Jan 1976] 02496/77 Heading A1A [Also in Division E2] A fish rearing enclosure comprises a net 12 supported by framework 15 and floating top frame 14 and is characterised by a top portion 17 having an aperture closable by a sliding clasp fastener 18. The aperture can be U-shaped or in the form of a cross.
Patent GB-520723-A (GB)
Title: Improvements relating to cathode ray tubes
IPC: H01J29/76
Filed: 1938-05-10
Abstract: 520,723. Cathode-ray tubes. COSSOR, Ltd., A. C., BEDFORD, L. H., JOFEH, L., and STEVENS, W. H. May 10, 1938, No. 2661/40. Divided out of 519,668. [Class 39 (i)] In an electro-magnetic deflecting system for a cathode-ray tube used for television or as a beam valve the coils 7 for line deflections surround a former 6 on the tube neck the side limbs of the magnetic circuits being completed by a rectangle 9a and two U- shaped laminae 9b, 9c; the axes of the coils 7 are on the main limb of the magnetic circuit which passes through the tube. The centres of the coils 8 for frame deflection are also on this line but their axes are at right angles thereto ; the external magnetic circuit is continued through laminae 11, wooden spacing blocks 10 separating all the laminae. The laminae 9b,c are of metal known by the Registered Trade Mark " Rhometal" and the others of metal known by the Registered Trade Mark "Stalloy," the former having higher permeability at line frequency than the latter. The coils 8 mav be enclosed in electrostatic screens and' the coils 7 operated symmetrically with respect to earth. The coils 8 may be adjustable to arrange for neutralization of possible pick-up between the coils.
Patent GB-635205-A (GB)
Title: Electrical bridge measuring system
IPC: G01R17/10
Filed: 1946-01-28
Abstract: 635,205. Resistance measurements. PHILCO CORPORATION. Jan. 29, 1946, No. 2763. Convention date, Feb. 3, 1945. [Class 37] In a system for the measurement of electrical parameters, e.g. resistors, two arms of a bridge circuit contain the standard and the unknown respectively and are associated with two pairs of additional arms with each of which the first two arms form a bridge. As shown, for use in testing resistors, the standard 1 and unknown 2 are connected together at the earth point 18, and at the points 25, 26 respectively to two additional arms comprising separately, the high limit resistor 10 in series with equal resistors 7, 11 and the low-limit resistor 16 in series with equal resistors 15, 17. The centretapping of the secondary winding of the supply transformer 3 is earthed and the supply to the device, when point 6 is positive, passes through the diode 4, point 20, points 25, 26 to point 18 and earth, while when point 6 is negative, current flows through diode 5 (diode 4 now non-conducting), point 19, points 25, 26 to point 18 and earth. Unbalance of the network is detected by the diode 12, the output of which is passed through transformer 13 to the amplifier 14 which energizes the grids of triodes 8, 9. The anodes of the latter are connected to the secondary winding of transformer 3 so that triode 8 may conduct only when the diode 5 conducts, i.e. when point 6 is negative. Similarly, the triode 9 may conduct only when diode 4 conducts, i.e. during the successive half-cycles ; when point 6 is positive. If the specimen lies within the given limits no unbalance voltage is detected by the diode 12 and no amplified positive signal is passed to the grids of triodes 8, 9 which, being biassed beyond cut-off by the grid bias battery 24, remain unconducting and no indication is registered in the meters 21, 22, 23. When the specimen is beyond the given limits, the diode 12 detects the unbalance voltage which is applied as an amplified positive potential during alternate half-cycles to the grids of triodes 8, 9, the appropriate one of which, having a positive voltage applied to.its anode during the same half-cycle, therefore conducts and produces readings in its associated meter, i.e. either 21 or 22, and meter 23. In a modification (not shown) a normal fourarm Wheatstone bridge is employed, in which the unknown and standard are connected as in the first embodiment while the diodes 4, 5 are each connected to a tapping on one of the remaining two arms. The operation of this circuit is identical with the first. Mechanical grading may be effected as a result of the tests by replacing the meters 21, 22 by relays operating the sorting mechanism.
Patent GB-251346-A (GB)
Title: Improvements in or relating to laminated springs
IPC: F16F1/24
Filed: 1925-01-30
Abstract: 251,346. Gill, T. W. Jan. 30, 1925. Laminated springs.-One contact surface of each leaf is smooth and the coacting surface of the adjacent leaf is provided with a plurality of small indentations 3, Fig. 1, so as to present a roughened or stippled appearance. These indentations are close together and are connected to one another so that lubricant can pass freely over the whole surface of the spring. A smooth surface free from indentations may be left around the edge of each leaf and grooves 17 with flexible oil-retaining packing may be provided as shown in Fig. 8. Anti-friction bearing balls 20 may be provided towards the end of each leaf. The upper leaf of each spring may be provided with a lubricator 7 and the smooth surface of each leaf may be formed with channels 10, Fig. 9. The edges of the leaves may be formed with flanges or lips to prevent the entrance of water or dust, or a spring gaiter may be provided. To prevent leakage, of oil, the securing-bolt holes may be chamfered or recessed for the reception of packing washers 15, Fig. 5.
Patent GB-765191-A (GB)
Title: Improvements in audiometers
IPC: A61B5/12
Filed: 1955-01-31
Abstract: 765,191. Audiometers. PATENT MAN. AGEMENT, Inc. Jan. 31, 1955 [March 8 1954], No. 2861/55. Class 81(2) An audiometer includes an oscillator capable of producing predetermined frequencies under the control of a first section of a frequency selector switch, the oscillator having a tapped output winding having its tappings connected to stationary contacts of a second section of the switch in such a way that as the switch is operated to adjust output frequency and also to connect a transducer through an attenuator to an appropriate one of the stationary contacts, the transducer is supplied at each selected frequency with a voltage corresponding to the desired acoustic output. The frequency produced by an oscillator including a pentode 10, a feedback winding 33 and a tuning winding 37 is controlled by parts 31, 39, 44 of a first section of a frequency selector switch, which parts contact appropriate stationary contacts connected with tappings of the feed back winding 33, tuning winding 37 and condensers 40, 41, 42 to form various tuned circuits. The inductance of the tuning winding 37 is varied by the provision of a coil 43 energized under the control of another part 48 of the first section of the frequency selector switch. The oscillator output winding 45 is provided with tappings 46 connected with groups of stationary contacts, each group being associated with a part 62, 63 or 64 of a second section of the frequency selection switch. A selector switch 61 is provided to connect either one of two airconducting receivers 51, 52 or a bone-conducting receiver 53 with an attenuator 54. When an air-conducting receiver 51 or 52 is selected for use, a part 57 of a third section of the frequency selector switch is connected by the selector switch 61 with a corresponding part 62 or 63 of the second section of the frequency selector switch so that according to the frequency used, the appropriate output voltage is applied to the receiver by way of the attenuator 54, the resulting audio-output being the same for all frequencies. Similarly when the bone-conducting receiver 53 is selected for use, another part 58 of the third section of the frequency selector switch connects a corresponding part 64 of the second section of the frequency selector switch to the bone-conducting receiver 53 by way of the attenuator 54 so that an appropriate output voltage is supplied. The tappings 46 of the output windings 45 are so connected to the groups of stationary contacts associated with the second section of the frequency selector switch according to the frequency characteristics of the receivers so that for all frequencies the same audiooutput is produced by each receiver. Specifications 638,649, 725,329 and 764,614 [both in Group XXXV] are referred to.
Patent GB-593574-A (GB)
Title: Improvements in or relating to mechanical presses
IPC: B30B15/00
Filed: 1944-02-16
Abstract: 593,574. Mechanical presses. HARPER, H. Feb. 16, 1944, No. 2870. [Class 87 (ii)] Between a ram and a platen is disposed 'a deflectable spring member which transmits the pressure from the ram to the platen, and variations in the pressure applied to the spring member are indicated by means which indicate the variations of deflection of the spring member. Two examples are described, in each of which the ram 13 is an extension of a screw jack. (1) (Fig. 2). The ram 13 presses upwardly on the platen 15 through a spring plate 17 and ring 16. The indicating means comprise two green lamps 26, 27 of 4.5 volts, 3 amps. each and two red lamps 28, 29 of 4 volts 0.5 amps. each. When the ram exerts no pressure on the spring plate 17, the two green lamps are alight and the two red lamps are not alight, the circuit for lamps 26, 27 passing through spring contacts 22, 23 respectively. When pressure is applied by the ram, contact 22 is broken and the circuit for lamp 26 passes through lamp 28. Lamp 28 is thus lit and lamp 26 goes out. On further application of pressure by the ram, contact 23 is broken, the circuit for lamp 27 passes through lamp 29, lamp 29 is lit and lamp 27 goes out. The pressure is thus indicated in two stages, but may be indicated in one or more than two stages. (2) (Fig. 3). A lever 31, pivoted at 32, bears at one end 33 on the spring plate 17 and at the other end passes over a scale 30, which may be marked by a line to indicate one pressure and other lines of varying colours to indicate subsequent pressures as they are successively reached.
Patent GB-839981-A (GB)
Title: Improvements in or relating to illuminating devices
IPC: F21V7/00
Filed: 1956-01-30
Abstract: 839,981. Electric lighting fittings. DOWNER, G. V. Nov. 16, 1956 [Jan. 30, 1956], No. 2977/56. Class 75(2) An indirect illuminating device comprises a light source D, a main reflector E below the light source for reflecting the light upwards, an annular reflector F above and co-axial with the reflector E for reflecting the light downwards and outwards, the reflectors being so arranged that a small quantity of light will pass out between them without reflection and emerge above normal eye level, some light will be reflected at a glancing angle but none will be reflected back towards the source. The reflector E may have a central aperture below which is located a reflector J which may have a central conical part K. A flared reflector L may also be arranged above the reflector F and surrounding the lamp holder A and supporting rods or wires may be provided for the whole system of reflectors.
Patent GB-153814-A (GB)
Title: Improvements in or relating to moulds for ingots and other heavy steel castings
IPC: B22D7/10
Filed: 1920-01-31
Abstract: 153,814. Village, R. Jan. 31, 1920. Casting processes; moulds; mould materials.- A feeder head, for heating the top of an ingot or other large mould and the metal therein, comprises an annular fire-place 4 with imperforated inner walls 1 which may be lined with a mixture 11 of fire-clay, graphite, and ganister or the like. Removable bars 5 and air inlets 14, 3 may be provided and gas or air under pressure may be admitted through one of the openings 14, the others being closed. The inner walls 1 close in towards the top so as to radiate heat downwards and fire-brick 7 in sections or luting makes a tight joint with the mould'. A detachable annular cover, with one or more flues, may be provided to prevent mefal from falling into the fire.