baber/WOPTO huggingface dataset:
Patent GB-1132562-A (GB)
Title: Precision resistor of great stability
IPC: H01C1/024
Filed: 1966-01-11
Abstract: 1,132,562. Resistors. VISHAY INSTRUMENTS Inc. 11 Jan., 1966 [4 May, 1965], No. 1260/66. Heading H1S. Variation in the resistance of a metal film on a substrate with changes in temperature or in the moisture content of an overlying protective film is avoided by making the resistive layer of, for example, nickel-chrome alloy, with a coefficient of expansion with temperature which is greater than that of its glass substrate, and placing identical plastics coatings on both sides of the substrate so that expansion or contraction of the plastics coatings does not cause it to bend. A rise in temperature places the resistive layer in compression, thickening it, and a fall puts it in tension, thinning it. The net sum of the resistance changes due to thermal expansion of the layer itself and resulting from differential expansion is arranged to be substantially equal and opposite to that due to the temperature coefficient of resistivity of the alloy. As the last is not linear a predictable residual variation of the resistance of the film necessarily remains. The resistor illustrated has a photo-etched resistance track on a glass substrate 11 with an epoxy coating 13 over it, balanced by a similar layer on the other side of the substrate. The value of the resistor is adjusted in manufacture by extending selected etched dividing lines (e.g. 22) to the edge of the film, so that the current is made to follow the looped tracks 19, 21 &c. The resistor may be packed in soft rubber, polyurethane foam or other soft material to protect it from forces exerted by its case and be fed by flexible conductors. Two or more resistors may be made on a single substrate, not necessarily on the same face, and other portions of a circuit may be built on the resistor substrate. Instead of glass the substrate may be of other material, such as metal insulated from the resistive film by a plastics layer, the materials being so chosen that the temperature coefficient or resistivity and the stresses and distortion imposed on the resistance layer by the substrate tend to cancel one another out.
Patent GB-1032072-A (GB)
Title: Improvements relating to cooking processes
Inventor: EASTON ALASTAIR
IPC: A23L5/10
Filed: 1964-01-10
Abstract: 1,032,072. Cooking apparatus. W. J. HUBBARD & SONS Ltd. Jan. 6, 1965 [Jan 10, 1964], No. 1301/64. Heading A4D. [Also in Division H2] In a process for cooking meat in water in a thermally insulated container, at the end of a timed heating-up period to a preselected temperature, the heating means is de-energized during a timed cooking period, which is ended by automatically draining the water from the container. A thermostatically controlled heating stage may be interposed between the timed heating-up and the cooking stages to give an initial cooking temperature which is slightly higher than the pre-selected temperature. Depending on the setting of a three position rotary selector switch S1A-E, the cooking period may be automatically followed by two (lamp P10 lit), one (lamp P11 lit) or no (lamp P12 lit) cooling stages in which cold water is admitted to the container C for a period, normally 10 minutes, timed by timer C3, and drained therefrom. At the beginning of the operating cycle, stepping relay R5 is reset by coil R5A to close contacts ST. Operation of the starting switch SW3 may be followed immediately by energization of stepping relay R5 by pulse unit R4, to open contacts ST and close the first pair of controller contacts 1A and 1B. Alternatively, this action may be delayed by timer C2, on closing switch SW4. On energization of the water admission valve solenoid R11, through contact 1A, cold water enters container C, until it reaches electrode E1, when relay R7b operates contact X12 to operate a pulse unit R4 and cause R5 to step to contacts 2A and 2B. A heating control solenoid R10 is thereby energized, under the control of timer C4 and thermostatic switch TM1. On expiry of the first heating period, the relay steps to contacts 3A and 3B and the heating continues under the control of thermostatic switch TM2. On the closure of contacts D4, the relay steps to contacts 4A and 4B to de-energize the heating solenoid R10 and allow the cooking period to run under the control of timer C5. On transfer of contacts D5, the relay steps to contacts 5A, 5B operating discharge valve control solenoid R9. The absence of water, detected by electrode E2, may then initiate the first cooling stage by stepping the relay to contacts 6A (equivalent to 1A) and 6B. The operation of timer C3 is followed by a drainage step and repetition, if required, of the cooling stage. Safety and indicator devices include a mains failure bell B and a clock C1 which will stop at the time of the failure, a bell B2 indicating the end of the selected cycle, a test circuit with indicator lamps P15 and P 16 for electrodes E1 and E2 and signal lamps P1-9 to indicate the activity at present in operation. The container is preferably of stainless steel.
Patent GB-639346-A (GB)
Title: Improvements in garment stiffeners
IPC: A41C1/18
Filed: 1948-01-15
Abstract: 639,346. Garment stiffeners. PIERSON, J. O., and RYALL, C. Jan. 15, 1948, No. 1332. [Class 141] A garment stiffener particularly for corsets comprises a metal insert B in the form of one or more coiled springs or wires the interstices of which are filled with rubber or other resilient material C which bonds the insert to a fabric cover. This cover consists of an inner layer D, wrapped round the insert B and preferably having an overlap D<SP>1</SP>, and an outer layer preferably comprising upper, and lower strips E, El which are united to the layer D by adhesive and provide margins F by which the stiffener can be sewn to the garment.
Patent GB-346707-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64D27/02
Filed: 1930-01-15
Abstract: 346,707. Air brakes. HAVILLAND, G. DE, White House, Stanmore, and DE HAVILLAND AIRCRAFT CO., Ltd., Stag Lane Aerodrome, Edgware, both in Middlesex. Jan. 15, 1930, No. 1431. [Class 4.] One or more streamline struts forming part of the undercarriage of an aircraft are adapted to be turned about their longitudinal axes from a position in which the minor axis of the strut is transverse to the airflow to a position in which the major axis is transverse to the airflow in order to serve as an airbrake. Fig. 3 illustrates an aeroplane undercarriage in which a strut 15 is adapted to be turned through 90‹ under control of the pilot by means of a handle 19, cross shaft 20, crank arms 21, links 22 and levers 23. Eye-bolts 16, Fig. 1, at each end of the strut 15 are formed with annular corrugations engaging the corrugations in sleeves 18 secured to the strut structure thus enabling the strut proper to turn with respect to the eyebolts, whilst preventing relative endwise movement.
Patent GB-395712-A (GB)
Title: Advertising apparatus, especially suitable for underground railways
IPC: G09F19/22
Filed: 1932-01-19
Abstract: 395,712. Changing-signs. CHAPMAN, G. W., 82, Elgin Road, Seven Kings, Essex. Jan. 19, 1932, No. 1586. [Class 3 (i).] The walls of tunnels &c. 2 are provided with stationary screens 1 which are illuminated as a vehicle passes them by mirrors carried by the vehicle. Fig. 1 shows light sources 6 mounted on the wall above and below the screens 1, the light therefrom illuminating posters &c. on the screens 1 when reflected thereto by mirrors 5 carried on the passing vehicle 3. The sources 6 may comprise optical projection lanterns throwing images on plain screens 1. In Fig. 2 the beam is shown reflected by a mirror 7 on the walls and a mirror 5 on the vehicle before reaching the screen 1. The posters &c. may be identical, or may give a moving picture effect.
Patent GB-1135486-A (GB)
Title: Improvements in or relating to the production of compact multifilament yarns
Inventor: JOHNSON TIMOTHY FREDERICK NEWM
IPC: D02G1/00
Filed: 1966-01-13
Abstract: 1,135,486. Interlacing filaments to form yarns. IMPERIAL CHEMICAL INDUSTRIES Ltd. 28 Dec., 1966 [13 Jan., 1966], No. 1622/66. Headings D1F and D1W. Filaments are interlaced by passing a bundle thereof at least once around one or more loopforming members so as to bring the bundle on departure from the members into juxtaposition with a linearly succeeding length of itself approaching the member or members, and by intertwining the departing bundle with the approaching bundle by taking at least one complete turn of one about the other. It is stated that the interlacing produced is probably due to the bundle changing from having a flattened cross-section to a round cross-section as it passes from the loop forming member to the intertwining zone, and due to a false-twist produced by the intertwinement. The loopforming member may be driven, a freely rotating, or a stationary roller, or a rod, pin, wire or guide. The angle between the bundle passing to and from the member is preferably in the range of 110‹-145‹. The bundle may be drawn at one position of a draw-twister frame, looped about the ballon guide of an adjacent position and wound up on the spindle of that position. Alternatively the bundle may pass from a draw roll, via a heater to be relaxed, to the loop-forming member and back to a stepped-down portion of the draw roll. In a further example a draw roll has three separator rolls, a drawn yarn passing around stepped-up portions of the draw roll and a first separator roll to drive the latter and around a second separator roll, then via a heater to the third separator roll and back via the heater to the stepped-down portion of the draw roll, and after passing around the stepped-down portion of the draw roll and around the second separator roll, the yarn passes to the steppeddown portion of the first separator roll which acts as the loop-forming member. A drawn yarn may be steam relaxed before or after being interlaced. Two yarns of different composition - for example a polyamide yarn and a polyester yarn - and/or of different potential shrinkage may be interlaced by the above method.
Patent GB-1245304-A (GB)
Title: Telecommunication meter selection equipment
Inventor: REANEY DONALD
IPC: H04M15/26
Filed: 1969-01-10
Abstract: 1,245,304. Telephone exchanges. PLESSEY CO. Ltd. 21 Oct., 1969 [10 Jan., 1969], No. 1661/69. Heading H4K. A telecommunication supervisory set comprises a first counter stepped by dial pulses of two successive digit pulse trains, a second counter stepped by inter-digit pauses, a bi-stable device set if the first counter is in a given state when the second counter steps once and an output switch operated if the bi-stable device is set and the counter is in a given state when second counter is again stepped. The arrangement described is located at the exchange and seized when an initial digit "0" is dialled by a subscriber. The arrangement responds to the next two dialled digits and if these are "1" and "0" respectively indicating an international call applies a positive potential of magnitude less than that of normal metering pulses to the "P" wire of the calling subscribers line circuit causing a relay in that line circuit to switch out the usual meter and connect in an auxiliary meter used for international calls only. The output switch may also be provided with a contact in series with a contact selectively closed in accordance with the class of service of the caller and with a contact selectively closed in accordance with the time of day. The series combination selectively controls means to effect a forced release of the attempted connection. The counters may be integrated circuits employing metal oxide silicon transistors and the output switch may be a transistor driven relay.
Patent GB-1262838-A (GB)
Title: Food for feeding aquatic animals and method of manufacture
Inventor: CHEN DAVID TZUO YIH
IPC: A23K1/18
Filed: 1971-01-13
Abstract: 1,262,838. Food for aquatic animals. DAVID TZUO YIH CHEN and TEN FUH SHIH. 13 Jan., 1971, No. 1710/71. Heading A2B. Living worms, preferably of high protein content, such as tubifex worms, earth worms, mosquito larvae, brine shrimp, or daphnia, are dehydrated to remove free and loosely bound water, for example by disposing them on gypsum plate, a mass of the thus dehydrated worms are immediately frozen, and the frozen mass is freeze dried. The mass may be adhered to the side of the aquarium by pressing it on; if desired additional adhesive material may be incorporated to assist.
Patent GB-869748-A (GB)
Title: Improvements in or relating to storage and/or display stands or bins
Inventor: PINDER ROY HUGH
IPC: A47F5/05
Filed: 1959-01-16
Abstract: 869,748. Storage racks. PlNDER & SON Ltd., W. Dec. 8, 1959 [Jan. 16, 1959], No. 1746/59. Class 52(3). A storage rack comprises a plurality of trays 4 with partitions 12, rim 10 and central tube 11 fitting on sleeve 3 with a ball race 5 at each end, mounted on a pillar 2 fixed to base plate 1 so as to be independently rotatable about the vertical pillar 2.
Patent GB-554899-A (GB)
Title: Improvements in and relating to glass lehrs
IPC: C03B25/06
Filed: 1942-02-10
Abstract: 554,899. Glass lehrs. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 10, 1942, No. 1760. Convention date, Feb. 10, 1941. [Class 51 (ii)] A lehr for treating vitreous tubes comprises a conveyer extending through the furnace and fitted with uniformly spaced, transverse, rotating rolls disposed in a horizontal position, the lengths of tube resting between the rolls ; means are provided for feeding the tubes to and from the conveyer and for rotating the rolls independently of the conveyer drive. The conveyer comprises chains passing over front and rear sprockets 24, 26, Fig. 1, and supported by rails 53. The rollers 22, Fig. 4, are carried by studs 36 passing through the rollers 35 of the conveyer chains and fitted on their ends with sprockets 37, 371 engaging the links of a separate chain 38 which is driven, to rotate the rolls, by passing a bight in the lower run over a motor-driven sprocket. The tubes 11 are fed down inclines 18 having upper spacing members 19, and leave the conveyer by passing down inclines 71 to a cooling table along which they are rolled by a further conveyer. The furnace is heated by burners 58, 59 in its upper and lower walls and a perforated, longitudinal pipe blows air through the tubes as they pass through the furnace. The conveyer chains lie outside the furnace and are cooled by air jets.
Patent GB-432520-A (GB)
Title: Improved construction of cigarette, cigar, match or like cases or cartons
IPC: B65D85/10
Filed: 1935-01-19
Abstract: 432,520. Hinged lids for cartons. WINSTON, G., 3, Union Place, Curtain Road, and PIORNIK, L., 63, Parkhurst Road, Holloway, both in London. Jan. 19, 1935, No. 1864. [Class 18] An oblong or square paper, cardboard, &c., case or carton for cigarettes, cigars, matches, &c., comprises a body 1, Fig. 12, made from the blank shown in Fig. 7 by glueing or otherwise securing the side flaps together, and a double hinged lid 3, 3, mounted on a sliding band 2 encircling the body and made by uniting two blanks such as shown in Fig. 8, flexible strips 4 connecting the lids to the body so that the lids are opened and closed by sliding the band. Stops 5a, 6, Fig. 12 may be provided to keep the lids closed; in some cases the tongue 5<a> may be omitted, tongue 6 engaging a slot 5 ; tongue 6 may also engage a slot in the top edge of the body on a tongue thereon. The stop may be formed on one side only of the box. The lids may overlap or exactly meet. In a modification only one lid is hinged to the band.
Patent GB-296253-A (GB)
IPC: D01D7/02
Filed: 1928-01-20
Abstract: 296,253. Eggert, H. Oct. 3, 1927, [Convention date]. Spindle apparatus.- A spinning box for the manufacture of artificial silk comprises a base 1, Fig. 1, to which the bell member 5 is detachably secured by a locking-spring 10 engaging a groove 9 in the stepped rim 6 of the member 5, the spring 10, Fig. 2, engaging with the lower surface of the disc 3 along its entire length. The disc 3 is dished at 4 while the edge of the aperture 8 in the top 7 of the member 5 is in-, clined. The base 1 is formed of acid resistant material while the bell member 5 is of drawn or pressed aluminium.
Patent GB-633605-A (GB)
Title: Improvements in circuit-arrangements for amplifying frequency-modulated oscillations
IPC: H03F1/08
Filed: 1948-01-22
Abstract: 633,605. Frequency modulation. PHILIPS ELECTRICAL, Ltd. Jan. 22, 1948, No. 1945. Convention date, Jan. 25, 1947. [Class 40 (v)] In a valve amplifying circuit 5, 8 for frequency modulated oscillations in which a control voltage is derived indicative of amplitude modulation in the output and supplied to a control grid of one valve at least of the amplifying circuit to keep the amplitude practically constant a non-shunted resistance 26 or 27 connected in a cathode circuit common to both the input and output circuits counteracts any variation of the input capacity. of the valve(s) and phase distortion due to detuning of the input circuit. The control voltage may be derived from one anode circuit via a condenser 14 and a diode 15 shunted by a tapped resistor 17, 18. The tapping byepasses to earth any radio frequency by a circuit 19, 20 series tuned to the central frequency, and passes low-frequency amplitude variation control voltages to valves 5, 8 through resistors 21, 22, the cathode resistors 26, 27 suppressing input capacity variation.
Patent GB-272414-A (GB)
Title: Improved valve gear for internal combustion engines
IPC: F01L1/46
Filed: 1927-01-24
Abstract: 272,414. Fornaca, G. Jan. 24, 1927. Valves; valve gear.- The usual spring for closing the valve is replaced by a series of of plungers 6 arranged concentrically around the valve stem and acted on by air or other pressure supplied by a pump to a chamber 8 common to all the cylinders 7 in which the plungers work. The plungers are shaped like cartridge cases and engage a disc 5 acted on by a cam 1 and rocker 2. The cylinders 7 are formed with a stop 9<a> engaging a corresponding projection 10<a> on the valve guide.
Patent GB-1455652-A (GB)
Title: Method of producing internal pressure in containers
IPC: F17C9/00
Filed: 1974-01-17
Abstract: 1455652 Pressurizing containers MESSER GRIESHEIM GmbH and KAISER-PREUSSAG ALUMINIUM GmbH 17 Jan 1974 [17 Jan 1973] 02148/74 Headings B8T and B8C A method of producing internal pressure in a container comprising introducing into the container, shortly before sealing, a preselected quantity of a liquefied noble gas or liquid nitrogen. The method is applicable to metal cans, foil bags, deep-drawn PVC packages or plastics bottles.
Patent GB-511267-A (GB)
Title: Tamper proof ear tags
IPC: A01K11/00
Filed: 1939-01-21
Abstract: 511,267. Seals. ASHTON, D. W. Jan. 21, 1939, No. 2171. [Class 146 (ii)] An ear tag for animals comprises a strip of material, preferably metal, having a taperec tongue 11 at one end and a housing 12 for the tongue at the other end, a bar 20 integral with the strip being formed across the opening to the housing as in Specification 473,738, and an auxiliary housing 13 formed on the strip and adapted to overlie the main housing, a slot 21 permitting passage of the tongue.
Patent GB-1191092-A (GB)
Title: Push Button Switch Assembly
Inventor: PAIGE WALTER GRIFFIN
IPC: H01H13/14
Filed: 1969-01-15
Abstract: 1,191,092. Movable magnet switches. BURROUGHS CORP. 15 Jan., 1969 [17 Jan., 1968], No. 2431/69. Heading H1N. In a push-button switch assembly, a plurality of push-buttons 2, Fig. 7, mounted on a front panel 1 engage spring leaves 41 formed integrally from a sheet 40, Fig. 3B, of elastic material attached to the rear of the panel 1. Each leaf 41 comprises a rectangular portion 42 through which a rectangular section end of the push-button 2 is inserted and permanently locked by rotation of the button 2 after insertion. Lugs 50, 51 on the end of the leaf 41 are bent up to support the permanent magnet 54 for operating a magnetic reed contact unit 92 on a printed circuit panel mounted on supports 5 behind the panel 1. The magnets 54 are screened in the non-operated portion by shields 54 formed integrally from a single sheet 20 of magnetic material. The pushbuttons 2 may be of translucent material and illuminated by lamp 93 on the board 4.
Patent GB-411217-A (GB)
Title: Improvements in and relating to the frequency control of radio transmitters
IPC: H03L7/02
Filed: 1933-01-25
Abstract: 411,217. Generating high-frequency oscillations. THOMAS, H. A., National Physical Laboratory, Teddington, Middlesex. Jan. 25, 1933, No. 2446. [Class 40 (v).] The frequency of a radio transmitter or oscillator 1 is kept constant by allowing it to beat with a standard oscillator 2, amplifying the beats at 3 and applying them to two rectifying circuits in parallel, one of which includes a coil 6, and the other a condenser 9. The rectified beat currents act differentially by means of the relay coils 8, 11 on a condenser 12 and so bring the frequency of the oscillator 1 back to normal whenever it deviates therefrom. The rectifiers 7, 10 may be of the copper oxide or like type, or may be diode or triode valves. The relay coils 17, 18 may, as shown in Fig. 3, be wound on a copper former 16 which surrounds an iron cylinder 14 arranged in the gap of a magnetic yoke 13 excited by a coil 15. The former 16 is mounted on pivots and is connected to the condenser shaft of the main oscillator 1. In another arrangement (Fig. 4 not shown) the relay coils form the field winding of a motor the armature of which is fixed to the condenser shaft. Fig. 5 shows a modification, in which the relay coils 29, 30 are arranged to control brakes 27, 28 on two spring motors 25, 26. Elastic threads or tapes 24, which couple the motors to a drum on the shaft of the condenser, tend to drive that shaft in opposite directions.
Patent GB-278564-A (GB)
Title: Improvements relating to piston rings and the like mechanical apparatus
IPC: F16J9/08
Filed: 1927-01-28
Abstract: 278,564. Strachan, W., (Moss, J. W. S.). Jan. 28, 1927. Piston packing.-A split ring 1 is formed, at the side remote from the fluid pressure, with an undercut groove housing a split ring 4 having a correspondingly bevelled surface. The ring is outwardly expanding, while the ring 4 is made to fit the cylinder bore without tension. The rings may have concentric inner and outer peripheries, or either or both rings may be eccentric. The rings are arranged to break joint, relative rotation being prevented by a lug or pin on one ring engaging the gap in the other ring, or by a pin engaging recesses in both rings.
Patent GB-552797-A (GB)
Title: Improvements in or relating to devices for operating the type bars of a typewriter
Filed: 1942-02-25
Abstract: 552,797. Typewriters. ZWRONICEK, F. Feb. 25, 1942, No. 2496. Convention date, March 8, 1941. [Class 100 (iv)] Relay type-lever actions.-The type-lever 2 is connected to a revoluble disc 21 on a pivoted arm 16 resting on a bell-crank 11 which engages, as by a shoulder 14 and roller 7, an arm 5 pivoted to the keylever 7 and formed with an incline 8 for co-operation with an abutment 9. On depression of the keylever ,the arm 5 rocks the bell-crank 11 and then moves out of engagement therewith, the arm 16 drops on to a stop 27, a circular part 24 of the disc engages a driving roller 4, the disc makes a partrevolution, and the type-lever is actuated. A spring 17 returns the bell-crank, and an incline 15 thereon raises the arm 16, thereby releasing the disc from the driving-roller, and permitting a spring 23 to return the type-lever and disc to normal position. On release of the key-lever, the roller rides along an incline 29 and then engages the shoulder 14. If the key-lever is held down, repeat action of the type-lever is prevented, since the arm 5 remains disengaged from the bell-crank.