baber/WOPTO huggingface dataset:
Patent GB-1499944-A (GB)
Title: Drive transmission
IPC: F16D13/68
Filed: 1976-03-18
Abstract: 1499944 Universal joints; friction clutches B HACKFORTH [trading as VULKAN KUPPLUNGSUND GETRIEBEBAU] 18 March 1976 [29 March 1975] 10958/76 Headings F2U and F2C [Also in Division B7] In a friction clutch in which a hub 3a is clutched to a housing 3c by way of clutch members 9, the clutch members 9 are mounted flexibly on the hub 3a by annular spring plates 8 and the hub is rotatably mounted relative to the housing by a rolling bearing 16 whose outer race 16b has a domed outer surface provided with a flexible cushion 17 of rubber. In the embodiment shown the hub 3a is mounted on the cushion 17 and the inner bearing race 16a is mounted on a hollow shaft 15 fixed to the housing 3c. In an alternative embodiment (Fig. 3, not shown) the outer race 16b is supported in an annular disc fixed to the housing and a connecting, shaft between two parts of the hub engages in the inner race 16a. The clutch has frusto-conical engaging surfaces, the clutch being engaged by hydraulic or pneumatic fluid supplied to a cylinder 11 fixed to one clutch member 9 and a piston 10 connected to the other. Two clutches are described, each in the drive from a respective engine to a gearbox whose output shaft drives a propeller (Fig. 1, not shown).
Patent GB-610714-A (GB)
Title: Process of converting lignin predominantly into its aldehydic and acidic fractions
IPC: C08H5/02
Filed: 1945-05-01
Abstract: Lignin-containing materials are treated to obtain an alkaline solution containing the sodium salt of vanillic acid by exposing basic calcium lignosulphate or other material containing lignin in aqueous suspension at an initial temperature of at least 50 DEG  C. to the action of silver oxide in the presence of an excess of sodium hydroxide.  It is preferred that the lignin containing starting material should be substantially free of cellulose and sugars.  The silver oxide is preferably freshly prepared.  It may either be preformed by adding sodium hydroxide to silver nitrate and filtering before adding to the reaction mixture or it may be formed in situ by adding silver nitrate to a sodium hydroxide suspension of lignin. The products of the reaction are extracted with ether and the extract washed with bicarbonate to give a solution of the sodium salt of vanillic acid.  The silver is recovered from the residue from the ether extract.
Patent GB-376816-A (GB)
Title: Improvements in or relating to electric torches
IPC: F21L4/00
Filed: 1931-04-14
Abstract: 376,816. Electric battery lamps. CARPMAEL, A., 24, Southampton Buildings, London.-(Ling Nam Hardware Manufacturing Co. ; North Point, Hong Kong.) April 14, 1931, No. 11051. [Class 39 (ii).] An electric torch is provided with a pushbutton switch 12 which bears upon a metal contact strip 14 and is adapted to be retained in an inoperative position by a metal strip 19 slidably mounted at the lower end of a metal housing 10, the strip 19 being provided with an aperture 20 which, in the normal position, is in register with a bared portion 21 of an insulated metal strip 16 mounted within the casing and allows the bent lower end of the strip 14 to be pushed into contact therewith. The inward movement of the strip 19 causes the aperture 20 to be moved out of register with the bared contact piece 21. The push button 12 is housed within a metal member 11 slidably mounted on the metal housing 10, which is riveted to the torch casing, a flange 13 being formed on the button 12 so that when the member 11 is slidden upwardly the flange bears on the underside of the housing 10 and forces the end of the contact strip 14 into contact with the contact piece 21, where it is retained until the member 11 is pushed downwardly again.
Patent GB-462086-A (GB)
Title: Improvements in machines for cleaning carpets, garments or other textile articles
IPC: D06G1/00
Filed: 1936-04-17
Abstract: 462,086. Beating carpets &c. HAMMARLING, H. April 17, 1936, No. 11067. [A Specification was laid open to inspection under Sect. 9] of the Acts, Oct. 19, 1936.] [Class 138 (i)] A machine for beating carpets, garments, or other textile articles is provided with a convex stop surface 18, Fig. 2, adapted to check gradually the motion of the beating arms 4 when the machine is operating while no article is in the beating position. In a modification, the surface 18 is replaced by a series of stops arranged on a convex curve so as to come into contact successively with the beating arms and absorb the energy of the movement. The beating element comprises a rod 1 carried by the arms 4 which are pivotally mounted on shafts 5 and are provided with projections 6 carrying journals 7 for rollers 8. The rollers are engaged by cams 13 on a driven shaft 14, the cams moving the rod 1 away from the article being beaten, and the beating taking place under the action of springs 9. The springs may be tensioned by means of a cranked handle 12. The machine casing 3 may be suspended from a rail 20, Fig. 4, and held in the' desired position by an adjustable resilient stay 22.
Patent GB-890072-A (GB)
Title: Projector of radiations
IPC: F21V7/00
Filed: 1960-03-29
Abstract: 890,072. Lamp reflectors. PERRET, S. L. March 29, 1960, No. 11082/60. Class 75(2) [Also in Group XX] A projector of radiations comprises a source 31 of radiations of the pin-point type and a reflector 33 of elongated shape, adapted to concentrate the radiations of the source through a longitudinal rectilinear slot in the reflector, characterized in that the reflector has a surface the sections of which through planes parallel to the slot and passing through the centre of the source are conics the first foci of the elliptical sections being aligned along a focal axis in the plane of the slot and parallel thereto, the other foci of the elliptical sections being placed on a conic the apex of which coincides with the centre of the source and the focus of the median elliptical section, in such a way that the radiations emanating from the source and reflected by the reflector are brought back near to the axis of the longitudinal slot and emitted through the said slot in the shape of a dihedron of rectangular straight section. The two systems of conics may have a common apex the curves passing through the apex having a first common focus and second foci situated in the straight line defined by the apex, and the common focus, the source being situated at the common focus. The reflector may have additional surfaces constituted by two systems of curves or by screens to limit the area illuminated and to limit direct illumination from the source. One of the systems of conics may have a skew surface. To vary the width of the slot or to displace it to one or other side of the focal axis the plane or curved surfaces 34, 35 defining the slot have adjustable shutters 36, 37. The reflector may be replaced by a light bulb having the curved surface and metallized except at the slot. A second reflector 38 may be fitted on the first reflector. The reflector has a surface the directrices of which are open conics the active foci of which lie on a common axis in the plane of the slot and coincides with the focal axis of the first reflector and the radiations emitted by the source and concentrated on the surface strike against the second reflector.
Patent GB-964046-A (GB)
Title: Synchronous induction machine
IPC: H02K19/14
Filed: 1962-03-23
Abstract: 964,046. Synchronous induction motors. LOUIS ALLIS CO. March 23, 1962 [April 20, 1961], No. 11206/62. Heading H2A. In a synchronous induction motor rotor having pole-defining flux-barrier slots 34, stability is improved by providing a magnetic flux-leakage path across these barriers. This may be achieved by including in the rotor stack 5-15% of blank laminations 37 having no flux-barrier slots, as in Fig. 3. Alternatively 5-15% of the laminations may be staggered by one or two slot pitches, as shown in Fig. 4B, so that the barrier-slots 45 do not coincide. As further alternatives saturable unpunched bridges may be left across the barrier-slots in some or all of the laminations, or the barrierslots may be filled with a material of moderate permeability, e.g. stainless steel, sintered powdered iron, a mixture of iron and aluminium filings, or an iron-aluminium alloy.
Patent GB-1461808-A (GB)
Title: Circuit for deflecting the beam of a cathode ray tube
IPC: G01S7/06
Filed: 1974-03-13
Abstract: 1461808 Transistor deflection amplifiers LICENTIA PATENT VERWALTUNGS GmbH 13 March 1974 [13 March 1973] 11230/74 Heading H3T In a circuit for deflecting the beam of a cathode-ray tube having the bases of control transistors Q1, Q2 connected to the output of an amplifier 2, the base of each further transistors Q3, Q4 connected to the collector of a control transistor and the output of each further transistor connected to the input of a deflection coil L, a separate resistive feedback path is provided via resistors 9 and 11 from each end of the deflection coil to the input of the amplifier. As shown, the coil voltage is fed back to the input 1 of an operational amplifier 2 via a high resistance 11 to suppress tendency to oscillate. The circuit is useful for radar deflecting systems. In a known circuit (Fig. 1, not shown) only one feedback path 10 is provided.
Patent GB-405833-A (GB)
Title: Improvements relating to the prevention of the formation of carbon deposits on the fuel injection nozzles of internal combustion engines
IPC: F02M65/00
Filed: 1933-05-22
Abstract: 405,833. Liquid - fuel injectors. HAMMER, A. A. H., and REBBECK, F. E., c/o Harland & Wolff, Queen's Island, Belfast. May 22, 1933, No. 11252. [Class 7 (iii).] To prevent the formation of carbon deposits on the tips of fuel injection devices, air is compressed into a chamber during the compression stroke of the piston and returns to the cylinder during the firing stroke across the tip of the injector. As shown in Fig. 1, air is fed from the engine cylinders through pipes K containing non-return valves H to a reservoir L where it may be cooled, and pipes M connect the reservoir with orifices arranged around the tips of the injectors E. In the construction shown in Fig. 3 a chamber N surrounding the tip of the injector E receives air through orifices W and through ports T controlled by a non-return valve U and discharges air during the firing stroke through the orifices W. In further modifications (1) the chamber N is charged and discharged through the same orifices W, the ports T and valve U being dispensed with : and (2) the orifices W are formed as an annular slot.
Patent GB-108366-A (GB)
Title: Improvements in Starters for Electric Motors.
IPC: H02P1/06
Filed: 1916-08-11
Abstract: 108,366. Switchgear & Cowans, and Neep, G. H. Aug. 11, 1916. Controllers, multiple rocking bars for.-In a motor starter comprising a number of separately actuated switches, the reversal hand -levers are provided with switch-operating cams and catch-arms adapted to coact with rocking arms, carrying the switch contacts, in such a manner that the switches must be closed and opened in proper order. The closure of one switch locks the preceding switch in its closed position, and when the last switch is opened by the de-energization of its ' hold-on ' magnet the other switches are successively opened. The switches are provided with renewable contact plates and sparking contacts. In the arrangement shown in Figs. 1, 2, and 3, each of the laminated contacts a<1> - - a<4> is mounted on rocking arms b<1> - - b<4> and are normally held in their ' off " positions by springs c<1> - - e<1>. Each rocking arm is provided with a spindle n which carries a roller m adapted to be engaged by a cam k on its operating lever; and the spindle n when its switch is open extends into the path of a catch arm o on the succeeding switch so that this switch cannot be closed until the preceding switch has been operated. The cams k are provided with projections u, v which limit the open and closed positions of the rocking arms. The arms b<1> - - b<3> are held in their closed positions by the front surface of the catch arm o engaging the spindle n of its preceding arm; while the arm b<4> is held in its closed position by an electro-magnet p, the spring-controlled armature q of which is connected to the handle h<4> by a lever s. To open the switches, the magnet p is de-energized, when the arm b<4> is operated by its springs e<4>. The movement of the handle h' withdraws its catch-arm o from the spindle n of the arm b<3> so that the switch of this arm is opened. This operation is repeated until all the switches are opened in succession. To ensure that all the switches are opened after the handle h<4> has been operated, the bosses of the handles h<1> - - h<4> are provided with co-operating abutments t<1>, t<2> so that the movement of one handle imparts a movement to the next one. The lower ends of the laminated brushes are always in engagement with the contacts f; while the upper contacts g are provided with renewable plates g<1> which are engaged by sparking contacts x carried on the longest laminations of the brush contacts. In the modification shown in Figs. 6 and 8, each catch-arm e is provided with a lateral extension o<1> and a foot o<2> and coacts with the spindle n of its succeeding switch in such a manner that normally the spindle n lies behind the extension o<1> as shown in Fig. 6 and prevents the closure of one switch until the preceding switch is closed. In the modification shown in Fig. 9, the catch-arm o coacts with the spindle n of its succeeding switch and is so shaped that it rides behind the spindle n.
Patent GB-219410-A (GB)
Title: Electric cooking apparatus
IPC: A47J27/00
Filed: 1923-04-27
Abstract: 219,410. Berry, H. H., and Painton, C. A. April 27, 1923. Electric hot-plates.-A hot-plate 4, for use in jacketed or like pans or containers for cooking purposes, is provided with an opening 9 and a resistance having external contacts 8 adapted to register with contacts 7 on a stand 1, the stand having a projection 10 adapted to be depressed by a lifter passed through the opening 9 for removing the plate, the depression of the projection 10 effecting the breaking of the circuit. In Fig. 3, the switch 14 is opened through the pivoted lever 11. The stand may be constructed to heat two plates simultaneously, a separate switch being fitted to connect the plates in series. Projections 5 on the stand engages notches 6 on the plates to secure correct alignment.
Patent GB-229150-A (GB)
Title: Improvements in and relating to card index, letter and document files
IPC: B42F17/02
Filed: 1924-05-08
Abstract: 229,150. Haberfeld, E. O. May 8, 1924. Racks.-In a container for filing letters, index cards, and thin sheets 30, between supporting cards 4, all of which are removable, the sheets and cards are supported at any inclination by means of spacing members or grooves 2 formed in the bottom 1 of the container and a rod 10 adjustable in holes 12 near the upper edge of the container. The rod 10 may be made resilient longitudinally by forming it in two telescopic pieces which are kept extended by a spring. The cards 4 are formed with projecting tongues 5, which engage in the grooves 2, and their movement is limited by a false bottom 3. In an alternative construction,the cards 4 have lateral projections which engage in the slotted sides of the container.
Patent GB-669198-A (GB)
Title: Improvements in or relating to drive transmitting mechanism
Inventor: HARRIS ARTHUR JAMES
IPC: F16D41/08
Filed: 1949-04-29
Abstract: 669,198. Variable-speed ratchet gearing. MASSON SEELEY & CO., Ltd. May 1, 1950 [April 29, 1949], No. 11466/49. Class 80 (ii). An annular driving member 1, oscillated by a toothed sector 5 and linkwork 6-8 from a rotating crank 9, is connected to a variably oscillated driven member 2 by two oppositely-acting unidirectional couplings each comprising a single spring-loaded roller 16, 17. As shown the oscillating driven member 2 has a collar 2' connected through a third uni-directional coupling, comprising rollers 13, to a cage 11 carried by a shaft 10 driving a roller 3 feeding strip material to a press. The roller 16 is disengaged towards the end of a feeding stroke (anticlockwise in Fig 4a) by a fixed striker 26 straddling the member 1 and engaging the projecting ends of the roller 16. The roller 17, operative to return the member 2 in a clockwise direction, is disengaged by a lever 18 pivoted in a recess in the member 2 and co-operating with a cam 19 on a control spindle 20 on which is mounted a pointer 21. Hence adjustment of the spindle 20, which may be locked by the handwheel 24, varies the extent of return of the member 2 and consequently the amplitude of the operative stroke. It is stated that the striker 26 may also be adjustable and alternative forms of uni-directional coupling may be employed. The Provisional Specification also describes a construction having an outer driven member and inner driving member and in which two rollers are used in one of the unidirectional couplings.
Patent GB-558244-A (GB)
Title: Improvements in and relating to electric lamp sockets
IPC: H01R33/08
Filed: 1942-08-18
Abstract: 558,244. Lamp-holders. BRITISH THOMSONHOUSTON CO., Ltd. Aug. 18, 1942, No. 11568. Convention date, Aug. 26, 1941. [Class 38 (i)] A holder for a tubular lamp having a pair of contact pins 12 projecting from each end, comprises a moulded body having in its surface slots 15, 18 to receive the lamp contacts by inserting one pin in the slot 15 and swinging the other inwards in the slot 18 from either side. At the back of the moulding are recesses 29, 34 housing contacts 17, 20 each having an upstanding portion 23 that projects into the path of the lamp contact pin in the slots 15, 18. The contacts are connected to terminals 27, 37. by leads 26, 35 laid in grooves 31, 36. The contact elements 17, 20 can be made of sheet material welded to the leads 26, 35 or if the leads are of resilient material the contact elements may be formed by bending the ends of the leads.
Patent GB-527926-A (GB)
Title: Improvements in or relating to radio antennae
IPC: H01Q9/46
Filed: 1939-04-17
Abstract: 527,926. Aerials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 17, 1939, No. 11612. Convention date, April 16, 1938. [Class 40 (v)] A substantially non-directional aerial comprises a pair of single or multiple wires A, B, Fig. 1, arranged at an angle of 90 degrees to each other, the transmission line TL being directly connected to the inner ends. The wires are a quarter wavelength long, or an odd multiple thereof, and one or more adjacent wires A<SP>1</SP>, Bl may be provided, the adjacent wires being connected together as shown in Fig. 3. The wires may be of different thicknesses. In the Specification as open to inspection under Sect. 91 similar arrangements of half-wave wires are described. This subject-matter does not appear in the Specification as accepted.
Patent GB-562545-A (GB)
Title: An improved method of an apparatus for forming tapered strips, sheets and rod-like material by rolling
IPC: B21H7/00
Filed: 1943-10-26
Abstract: 562,545. Automatic control systems. ABBEY, A. (Sandvikens Jernverks Aktiebolag). Oct. 26, 1943, No. 11686/42. A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 10, 1943. [Class 38 (iv)] [Also in Group XXII] In rolling taper strips, sheets, &c., the distance between the rolls is altered at a fixed speed and the rolls are driven at a rate correlated to this speed and to the degree of taper required. When making several passes with interposed annealing operations the rate of driving for the passes subsequent to the last annealing operation is so chosen that the percentage reduction in thickness is constant throughout the length of the blank. The pass is adjusted by screws 7, 8 geared to a pinion 12 worm geared to a motor 9 that also drives through an electromagnetic clutch 27 and change gear 20 a sun-wheel 15 of a differential gear. The main D.C. shunt motor 1 for driving the rolls also drives through an electromagnetic clutch 26 and gearing 21, 22, the sun-wheel 16. The wheels 15, 16 mesh with planets 17 carried by a gear 18 driving at 19 a field current rheostat 23 for the motor 1. Hand control is also provided at 24.
Patent GB-1146574-A (GB)
Title: Improvements in or relating to flexible non-extensible metal straps
IPC: A44C5/00
Filed: 1966-03-17
Abstract: 1,146,574. Belt gearing. M. ZALTRON. 17 March, 1966, No. 11713/66. Heading F2Q. [Also in Divisions A3 and A4] A strap, belt or tape is made by helically winding a metal member of S-shaped crosssection so that its convolutions inter-engage, and then compressing the helix so that the convolutions lock together. Fig. 2 shows the helix before compression. The surface may be fluted or marked obliquely or with curves. In a modification (Figs. 7, 8) the member has an inner S-shape and an outer flat shape which may be fluted.
Patent GB-624801-A (GB)
Title: Locking device for tubes of telescopic structures
IPC: F21V21/22
Filed: 1947-05-01
Abstract: 624,801. Furniture adjusting-devices. BERGQVIST, A. T., and KARLBERG, B. 1. F. May 1, 1947, No. 11745. [Class 52 (iii)] [Also in Group XXIV] In a device for locking telescopic tubes, one end of the inner tube 1 has secured thereto two spaced guiding devices 3, 4 having adjacent oppositely inclined cam faces 5, 6. These are engaged by complementary faces 8, 9 and split sleeve 7 of such diameter to be an interference fit, when unlocked, in the outer tube 2. A wedge 10 fits into a complementary wedge-shaped slit in the sleeve 7 which is expanded or released by relative rotation of the tubes which are thereby locked or freed. Axial compression of the tubes increases the locking effect, which increase may be effected in axial tension by reversing the sleeve 7 and wedge 10. In a modification the wedge may have cam surfaces to engage the guiding devices and hence move axially to expand or release a plain sleeve having no axial movement.
Patent GB-1459585-A (GB)
IPC: B65H23/032
Filed: 1974-03-15
Abstract: 1459585 Measuring lateral displacements of a moving sheet G D McCANN 15 March 1974 [21 March 1973] 11763/74 Heading G1N [Also in Division D1] Apparatus for measuring lateral deviations of a sheet of material passing through a machine comprises feelers for sensing the edges of the sheet to produce electrical signals whose difference represents the centre line of the sheet. As shown Fig. 1 for a sheet 12 of jute passing through a carpet tufting machine 10, the side edges 31 of the sheet are sensed by spring-biased feelers 34, supported for rotation about shafts 36, to displace the slider of a rotary potentiometer fixed in a housing 38 at each side. The housings are linked with the sheet 12 to be laterally displaced with the sheet during the tufting process. The potentiometers 44 Fig. 3 and their sliders 43 are connected in a bridge circuit whose output signal is indicative of the extent and direction of lateral deviation of the centre of the sheet 12, and operates an appropriate alarm 110, 114 when it exceeds a pre-set amount.
Patent GB-813776-A (GB)
Title: Means for automatically maintaining a belt or rope at the proper tension
IPC: F16H7/16
Filed: 1957-04-11
Abstract: 813,776. Belt tensioning devices. ALLMANNA SVENSKA ELEKTRISKA A.B. April 11; 1957 [April 21, 1956], No. 11850/57. Class 80 (1). A belt or rope pulley 5, for automatically maintaining a belt or rope at correct tension for the torque transmitted, is arranged to swing around a parallel driving or driven shaft 1 having a gear-wheel 2 in mesh with an internal toothed rim 6 secured to the pulley. The pulley is rotatably supported on eccentric sheaves 9, 9 which are rotatable on the shaft 1. Concentric surfaces 4, 8 each side of the gear 2 and toothed rim 6 respectively roll against each other to relieve the bearing surfaces of the sheaves of load. The sheaves may be provided with a radial arm which is spring-loaded to rotate them giving a predetermined low tension to the belt.