baber/WOPTO huggingface dataset:
Patent GB-438223-A (GB)
Title: Improvements in electric switch operating devices
IPC: H01H3/56
Filed: 1934-07-23
Abstract: 438,223. Electromagnetic switches; maintaining defined speeds of motors. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London, and WRIGHT, S. R., 113, London Road, Bedford. July 23, 1934, No. 21470. [Classes 38 (iii) and 38 (v)] In a speed - responsive switching device comprising a magnetic element and an eddycurrent element in the magnetic field, one of the elements being rotated at a speed related to that of a member to be controlled, and the position of the other element, which is dependent on the reaction between the eddy currents and the magnetic field, determining the opening or closing of a circuit, means are provided for preadjusting the relation between the magnetic field and the eddy current element, in order to predetermine the speed at which the device is adapted to respond. In the arrangement shown, the eddy current member comprises a disc 5 of non-ferrous metal mounted on a shaft 16 so as to rotate between the poles of four U- shaped magnets, one pair of magnets being placed on each side of the disc. One pair of magnets 4<c>, 4<d> is secured to a quadrant 10 having a slot 11 concentric with the axis of rotation of the disc, and the other pair is secured to a plate 14, the latter being secured to the quadrant 10 by means of a bolt 12 and nuts 13, the bolt passing through the slot 11 and through a hole in the plate 10. By loosening the nuts, the quadrant with the magnets 4,<c> 4d can be adjusted about the axis of rotation to vary the intensity of the field passing through the disc. Each pair of magnets is clamped to a block 21 mounted on ball races 27 in which the spindle 16 runs, tubular spacers 28 being provided to retain the ball races in the correct positions on the spindle. The magnets thus form part of an element adapted to oscillate between adjustable stops 8, 9, the element being normally held against the stop 8 by the bias of an adjustable weight 6 carried by a rod 7 on the element. The magnetic element also includes a cam 3 mounted between springs 2 carrying contacts 1, which are in engagement when the magnetic element rests against the stop 8. If the speed of the shaft 16 increases above the predetermined value, the interaction between the eddy currents produced in the disc 5 and the magnetic element causes the latter to move over to the stop 9, whereupon the cam 3 separates the contacts 1 and opens a circuit. If the device is used to maintain constant speed in a motor fed from a fluctuating voltage supply, the opening of the circuit may insert field resistance to reduce the speed, or the device may be used to control a pilot motor driving a generator which is required to deliver constant voltage direct current. If the device is employed with a reversing motor to give over or under speed regulation, the balance weight is replaced by a pair of oppositely acting springs which normally hold the magnet system in the central position.
Patent GB-772121-A (GB)
Title: Machine assemblies comprising a turbine and a machine driven by the turbine
IPC: F02C6/12
Filed: 1955-07-25
Abstract: 772,121. Locking screws. SULZER FRERES SOC. ANON. July 25, 1955 [Aug..5, 1954], No. 21476/55. Class 89 (1). [Also in Groups XXIV and XXVI] A screw-bolt 9, passing through a shouldered aperture in a turbine-rotor 5 and screwing into a shaft 10 for securing the rotor against the shaft end, is locked to the rotor by a disc 18 having a polygonal aperture to fit the bolt-head and rotating therewith, the disc 18 having projections engaging notches in the rotor and being retained in a recess in the rotor by a spring-ring 19. Bolting. The bolt-head has a flange 21 behind the disc 18 so that, after removal of the disc 18 and replacement of the ring 19, the rotor may be forced away from the shaft-end by unscrewing the bolt. The bolt 9 engages a surface 14 on the rotor which is approximately in the same plane as the surface 13 engaging the shaftend.
Patent GB-221818-A (GB)
IPC: H01Q21/20
Filed: 1924-09-11
Abstract: 221,818. Lorenz Akt.-Ges., C. Sept. 11, 1923, [Convention date]. Aerials.-The radiation efficiency of a transmitting aerial system is increased by using a number of earthed aerials of different height so arranged that the electric lines of force mostly come to earth outside the area covered bv the system. The system may comprise a central vertical aerial a surrounded by rings of aerials b, c, d decreasing in height from the centre outwards, and all connected at their upper ends. The outer aerials are closer together than those nearer the centre. The tuning of each aerial is such that reflection occurs at its junction with the next aerial nearer the centre.
Patent GB-1505867-A (GB)
Title: Binding strip feed terminator
IPC: B65H20/04
Filed: 1975-05-20
Abstract: 1505867 Feeding webs XEROX CORP 20 May 1975 [26 Sept 1974] 21524/75 Heading B8R To automatically stop the feed of binding strip 30 to an adhesive book-binding apparatus of the type disclosed in Specification 1,495,766, a hole 120 of larger dimensions than a strip feeding nip 70, 72 is provided near the strip end. The rolled strip is held in a cartridge 57. Roller 72 incrementally feeds metered lengths of strip to the apparatus. The drive is transmitted from a motor 84, Fig. 9, via a shaft 88 having a driving lever 90. This engates a detent 92 carried by a drive gear 94 meshed with a driven gear 96 on shaft 98 coupled via one-way clutch 109 to the roller 72. When a pin 106 on gear 94 engages a stop 104 on a manually adjustable metering wheel 100, the driving lever moves past the detent and strip feed is temporarily terminated. During rotation of drive gear 94 in a feed direction, a spring member 110 is tensioned and upon cessation of such rotation, the spring causes reverse rotation of the gear 94 to reposition the associated pin 106 in its initial position ready for the next feed cycle. A slipping flywheel 111 prevents rebounding of the detent 92. These feed cycles continue until the hole 120 is reached whereupon the nip between rollers 70, 72 is no longer effective to feed the strip.
Patent GB-1374207-A (GB)
Title: High test calcium hypochlorite
IPC: C11D3/395
Filed: 1972-05-09
Abstract: 1374207 Coated calcium hypochlorite granules OLIN CORP 9 May 1972 [7 June 1971] 21609/72 Heading C1A Granules of calcium hypochlorite having a core of calcium hypochlorite containing at least 70% of Ca(OCl)2 and less than 5% water, having a coating of a mixture of calcium hypochlorite dihydrate and a water soluble inorganic diluent salt non-reactive with calcium hypochlorite are prepared by applying (e.g. by spraying) to calcium hypochlorite granules containing at least 70% of Ca(OCl)2 and less than 5% of water a mixture of water and a water soluble inorganic diluent salt non-reactive with calcium hypochlorite (e.g. alkali metal or alkaline earth metal chlorides or nitrates).
Patent GB-819766-A (GB)
Title: Improvements in and relating to an impulse counter
IPC: G06M1/32
Filed: 1957-07-09
Abstract: 819,766. Zeroizing-mechanism. SODECO, SOC. DES COMPTEURS DE GENEVE. July 9, 1957 [July 20, 1956], No. 21688/57. Addition to 813,268. Class 106 (1). The impulse counter claimed in the parent Specification is modified in that the support 30 for the zeroizing hammers 35 is connected with the armature 26 of the electromagnet 24 through means including a spring blade 48. When the electromagnet 24 is energized to operate the zeroizing hammers the armature 26 is attracted and the tensioning of the blade 48 is such that its cooperation with a stud 51 on a link 28 causes the hammers to pivot towards the heart-shaped zeroizing cams 9. When the hammers contact the cams a tenon 53 on the armature 26 moves in a slot 53 in the link 28 and the blade 48 bends until the armature reaches its extreme position. The mechanical strain to which the heart-shaped cams are subjected at the end of the zeroizing operation when they rock round their position of equilibrium is thus reduced.
Patent GB-933626-A (GB)
Title: Improvements in or relating to typewriter attachments
Filed: 1962-06-05
Abstract: 933,626. Typewriters. J. R. LANE (R. Fondiller). June 5, 1962, No. 21716/62. Class 100 (4). Alarms indicating exhaust of paper; paperfeeding, clamping and guiding.-A typewriter is provided with a page-end signal device, which comprises a resilient finger 28, whose free end 27 is deflected by the leading edge of sheets of paper P, advanced between a pressure member 15 and a paper pan 13 by rotation of a platen 11 and feed rollers 44, co-operating therewith, a ball 38 on an arm 37 integral with the finger 27 striking a bell 36, to provide an audible signal, when the trailing edge of the paper passes past a curved end 22 of the pressure member 15. In another embodiment (not shown), the finger 28 may close an electrical contact to provide an audible or visual signal. Paper and matrix carriages and supports.- The carriage base 33 is slidably mounted by ball-bearings 41 on a support 42 rigid with the typewriter base. The platen 11 may be of a conductive rubber to sense the passage of the trailing edge of the paper. Erasing or correction tables.-The pressure member 15 has a ledge 16, serving as a backing member for the paper to facilitate erasures.
Patent GB-988910-A (GB)
Title: Thermoplastic compositions
IPC: C08L97/00
Filed: 1962-06-05
Abstract: A plastic wood composition is produced by mixing a cork-rich coniferous bark fraction and a thermoplastic resin, heating the mixture until it becomes plastic, and cooling and grinding it. The bark fraction may be produced from the bark of Douglas fir, Western hemlock or White fir by comminution and mechanical separation. The bark fraction may comprise 63-73% of cork.  95% of the bark fraction may pass through a 65 mesh screen and 65% through a 200 mesh screen. The resin may be a synthetic p-pinene polymer, an extracted pinewood pitch resin, or a calcium-treated, esterified, or hydrogenated rosin. The composition may also comprise a plasticizer, e.g. distilled tall oil or a mixture of fatty acids derived from tall oil. The composition may comprise 45-65% of bark fraction and 5-8% of plasticizer.
Patent GB-1070261-A (GB)
Title: A semiconductor device
IPC: H03K19/02
Filed: 1964-05-26
Abstract: 1,070,261. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 26, 1964 [June 10, 1963], No. 21796/64. Heading H1K. The invention is based on the discovery that when an electric field in excess of 2000 volts/cm. is set up in a crystal of gallium arsenide, the current flow between a pair of electrodes on the body fluctuates at microwave frequency. In general the fluctuations are random noise but if the electrodes are at the ends of a body whose length L lies between 2 x 10<SP>-2</SP> and 1 x 10<SP>-4</SP> cm. and the field is set up by applying a suitable potential difference to these electrodes, the current fluctuations are coherent oscillations with a frequency, or set of harmonic frequencies, given by f = nv/L, where / is the frequency, n is an integer and v is the carrier drift velocity. The claims are directed to a device (which need not be made of gallium arsenide) exhibiting the above effect and to the use of the effect as a method of generating microwave oscillations. In the drawings (not shown). Figs. 1 and 2 depict the electrical characteristics of the device; Fig. 3 an oscillator circuit consisting solely of the device, a source of D.C. power and a load; and Fig. 4 a jig which is used to provide a suitably dimensioned Ga As wafer with tin electrodes. In this jig the wafer is located between two tin spheres which are subsequently melted and alloyed to the wafer, the end product (Fig. 5a, not shown) being a cylinder consisting of two tin rods with a disc of gallium arsenide between them. This is subsequently shaped by grinding to a triangular cross-section, embedded in epoxy resin, the resin partly removed to expose one rectangular face of the triangular prism and attached by that face to a suitable insulating block carrying phosphor bronze contacts to the tin electrodes. The steps of this process are depicted in Figs. 5b to 5f (not shown).
Patent GB-370782-A (GB)
Title: Improvements in or relating to appliances for permanent hair waving
IPC: A45D6/02
Filed: 1931-07-30
Abstract: 370,782. Hair-waving appliances. BOUDOU, G., 8, Rue Notre Dame de Lorette, Paris. July 30, 1931, No. 21808. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 1, 1931.] [Class 131.] Winding appliances for permanent hairwaving, of the kind comprising a body part and hinged cover forming a channel for the hair, for example as described in Specification 201,695, [Class 131, Toilet &c.], are provided with a snap-action securing device for holding the lid in the closed position. In the illustrated construction flat and channelled members A, B respectively are pivoted at E and also fitted with spring-snap latches G engaging the lateral projections F. Pressure on the finger-piece I releases the latches when necessary. The curler (not shown) is supported resiliently on the recessed upper surface of the member L loosely mounted in the casing S by means of a central pin O and tiltable against the action of a pair of springs M mounted on opposite sides of the pin. A nut P regulates the maximum lift of the member. The lid portion A is fitted with a comb and spring tongue K. A slit V is provided in the member B for introduction of a binding tape.
Patent GB-487922-A (GB)
Title: Improvements in mule spinning machines
IPC: D01H3/04
Filed: 1937-08-09
Abstract: 487,922. Spinning-mules. SACHSISCHE TEXTILMASCHINENFABRIK VORM. R. HARTMANN AKT.-GES. Aug. 9, 1937, No. 21861. Convention date, Oct. 26, 1936. [Class 120 (ii)] In a spinning-mule the carriage c is driven on its outward and inward runs by a hydraulic device which is regulated or controlled, e.g. by an oil pump h, Fig. 1, driven by a motor i and acting through a cylinder k rigidly connected with the carriage c. The cylinder k is reciprocated relatively to a stationary piston n, Fig. 2, by the admission of oil alternately on each side of the piston through tubes o and a hollow rod m. Alternatively the hydraulic drive may be transmitted through a rack, screw spindle or gear wheels.
Patent GB-856110-A (GB)
Title: Improvements in or relating to photographic and cinematographic cameras
IPC: G03B7/085
Filed: 1959-06-26
Abstract: 856,110. Photo-electric camera exposure control. KODAK Ltd. June 26, 1959 [July 2, 1958], No. 21996/59. Class 40(3). [Also in Group XX] In a camera having an exposure factor automatically controlled by a photo-electric device energized by an electric power source a mask is disposed in front of the photo-cell and is adjustable manually or automatically to expose a greater portion of the photo-cell as the source voltage decreases. In one embodiment Fig. 1 photo-conductive cell 10 controls steel armature 18 to adjust segment 32 and gear 36 which form the driving member of a known still camera shutter retarder. As battery 12 voltage falls armature 42 causes mask 48 to increase the photocell exposure. Pointer 50 co-operates with scale 52 which indicates the need for battery replenishment. In another embodiment, Fig. 2, voltmeter 94 scale 98 corresponds to mask 84 scale 92 and the mask is adjusted manually for coincident readings of pointers 88, 96. The photo-cell circuit controls the aperture provided by diaphragm vane 62 and switch 60 is so constructed that the circuit is completed before cinÚ-camera motor 72 is energized.
Patent GB-421621-A (GB)
Title: Improvements in and relating to wheels for tractors and other agricultural implements
IPC: B60B35/10
Filed: 1933-08-04
Abstract: 421,621. Vehicle wheels. MILLER, G. J., Court Lodge Farm, Chelsfield, Kent. Aug. 4, 1933, No. 22001. [Class 144 (i)] A tractor or like wheel is secured to the hub by means permitting axial adjustment to vary the tracking-width of the wheels. In the construction shown in Fig. 2, the wheel body 4 is secured to the flanged hub 3 by a series of bars 5 bolted to bracelets 8, 11 on the hub and wheel body respectively. The bars are provided with a series of bolt-holes 6, (or slots) to permit the axial adjustment and, as shown in Fig. 3, the parts 3, 4 may be fitted in vertical alignment. In modifications (not shown), the bars 5 may be replaced by long threaded bolts to be used with back-nuts or distance-sleeves; or the parts 3, 4 may be adapted to telescope and be secured in adjusted positions by set-screws or bolts co-operating with spaced holes or slots in one or both of the parts ; or the part 4 may be threaded to screw on to an axial extension of the part 3.
Patent GB-797861-A (GB)
Title: Tab assembly for articles made of synthetic resins and the like
IPC: G09F3/08
Filed: 1956-07-17
Abstract: 797,861. Tab fastening. SOC. D'EXPOITATION DES PLASTIQUES. July 17. 1956 [Dec. 2, 1955], No. 22031/56. Class 44 A tab assembly consists of a headed pin 4, a base element 2, a retainer flap 5, all of a bondable synthetic resin plastic material, and a flexible tab 1, one end of flap 5 being bonded to the base element 2 with the end of pin 4 opposite the head bonded to the flap 5. The flap 5 and tab 1 are perforated at 6 and 3 respectively, so that the tab 1 may be inserted on the pin 4 between the end portions of flap 5 for removable retention. The flap 5, pin 4 and base element 2 may be of a polyvinyl chloride base material. In Fig. 3, not shown, a heating electrode surrounds the pin so that by pressure and heat the pin, flap and base element may be bonded together.
Patent GB-460902-A (GB)
Title: Improvements in or relating to the refining of mineral oil stocks
IPC: C10G21/12
Filed: 1935-08-06
Abstract: In the separation of mineral oils into their paraffinic and naphthenic constituents according to the parent Specification, the oil is treated with a liquefied normally gaseous hydrocarbon and toluidine at a temperature at which layers are formed which are then separated.  Extraction may be effected in a batch or countercurrent treatment.  Example, a residual lubricating stock is extracted at 85 DEG  F., with liquefied propane and o-toluidine flowing in countercurrent.  After separating into layers the refined oil layer is freed from solvent to yield a lubricating oil.  The oil may be de-waxed before or after extraction. Mixtures of o- and p-toluidine may also be used.
Patent GB-1223712-A (GB)
Title: Improvements in or relating to water heaters
IPC: F24H9/06
Filed: 1968-05-10
Abstract: 1,223,712. Water heater casings. JUNKERS & CO. G.m.b.H. 10 May, 1968 [13 May, 1967], No. 22183/68. Heading F4A. The rear wall 10 of a gas-heated water heater is provided with lugs 25 . . . 30, formed by bent back parts of the wall, for fixing components housed within a front shell 11. The lugs are formed in flat portions 21 . . . 23 of the rear wall 10 pressed out towards the front shell 11. The lugs are strengthened by corrugations (36), Figs. 3 and 4 (not shown), extending across the lines of bend between the lugs and the rear wall and corrugations (37) extending longitudinally along the lugs. The lug 25 is bent perpendicular to the rear wall and has a depending free end which serves to fix the burner 14 against twisting. The lugs 26 have openings (31), Figs. 3 and 4, to receive and secure screwed pipe couplings 32 of the water pipe coil 33 passing around the combustion chamber 15. The lugs 27 to 30 have apertures 35 for screws for securing the back-draught safety device 16 and the waste gas connection 161. Channels 38 and 201 pressed in the rear wall 10 provide for the passage of air between the rear wall and a wall on which the heater is mounted, projections 17 of the rear wall contacting the mounting wall. A pressed-out flat portion 19 of the rear wall is provided with an aperture 18 for receiving a mounting hook.
Patent GB-1506868-A (GB)
Title: Method of securing roof bolts in a mine roof
IPC: E21B10/32
Filed: 1975-08-19
Abstract: 1506868 Anchoring bolts KENNAMETAL Inc 19 Aug 1975 [29 Aug 1974] 22202/77 Divided out of 1506867 Heading F2H In a method of securing a roof support bolt in a hole 12 formed upwardly in a mine roof or ceiling, at least one annular or helical recess 20 is formed in the wall of the hole, e.g. by means of a tool (Figs. 3-25, not shown) which is described and claimed in parent Specification (see Division B3), cementing material 18 is introduced into the hole so that it flows into the recess, and a bolt 14, which may have projections 16, is placed in the hole and is supported by the material 18 when set. The material 18 may be epoxy cement placed in the hole in individual packets which are ruptured upon the introduction of the bolt. The recess may be a helical groove of a depth up to one-quarter of the hole diameter, of an axial extent substantially equal to the length of the portion of the bolt in the hole and of an axial width substantially equal to one-fifth of the spacing between adjacent convolutions.
Patent GB-1100183-A (GB)
Title: Improvements in or relating to insulating and sealed pipe joints
IPC: F16L23/08
Filed: 1965-05-27
Abstract: 1,100,183. Pipe joints; pressure-resisting covers. CHEMETRON CORPORATION. 27 May, 1965 [10 June, 1964], No. 22631/65. Headings F2G and F2P. [Also in Division G1] In an electrically insulating and sealed pipe joint hubs 11, 12 are clamped together end-toend to form one conduit with an insulating gasket disposed between the opposing faces of the hubs and to prevent direct contact therebetween the hubs having flanges 11a, 12a which co-operate with a groove in a segmental clamp 18. An insulating gasket 20 is positioned between the flange 12a and the clamp and an insulating filler material 38, 39, 40 is injected in all voids and spaces to prevent arcing or electrical leakage between adjacent parts of the joint. 0-rings 14, 15 are received in grooves in the flanges 11, 12. The segments of the clamp are secured together by bolts 21 and plates 41 are welded thereto. All the opposed surfaces of the joint components may be coated with an epoxy resin. Supplementary flanges 25, 26 may be provided for the attachment of closure members and for subjecting the joint to a hydrostatic test; screws 35, 36 provide for electrical connections, or lightning arresters, and are utilized for testing the electrical characteristics of the joint.
Patent GB-267171-A (GB)
Title: Improvements relating to the projection of light
IPC: F21W101/10
Filed: 1925-09-10
Abstract: 267,171. Steele, L. J., and Martin, H. Sept. 10, 1925. Optical - projection apparatus. - A lamp for cinematographic projection, or the like comprises a truncated ellipsoidal reflector a, a hemispherical reflector c, and a light source b disposed at the focus of the reflector a, which focus is also the centre of the reflector c, a refractor d or refracting system being arranged within the reflector a, so that the rays not reflected by the reflector a are conveyed to the conjugate focus of the reflector a. An additional refracting system e may be arranged before or beyond the conjugate focus of the reflector a so as to reduce the angle of the beam projected. The refractor d may consist of a double convex lens suspended from the reflector a or .mounted in a light framework held in position by light metal rods adjustably secured to the reflector a by nuts.