baber/WOPTO huggingface dataset:
Patent GB-525111-A (GB)
Title: Improvements in or relating to variable electrical resistances
IPC: H01C10/38
Filed: 1939-03-10
Abstract: 525,111. Variable resistances. BRACKENBURY, A. S. H., and KODAK, Ltd. March 10, 1939, No. 7777. [Class 37] In order to enable several different loads at reduced voltage, for example lamps for motionpicture projectors, to be taken from a variable resistance through a single input socket, the resistance is provided with a number of scales any one of which can be brought into cooperative relation with an adjusting member, for example the pointer 22 of a knob 18 of a slider 16 sliding on a rod 17 and bridging a pair of resistance-elements 3, 4. The scales shown are provided on the faces of a square-section rod 19 having an operating member 20 and pivot 21 whereby the rod can be rotated to bring the scale appropriate to the load in use under the pointer 22. The scale shown is that for a 750-watt load, and the knob 18 is adjusted along the scale to the position corresponding to the supply voltage. The other scales may correspond to wattages of 300, 400, and 500, respectively.
Patent GB-774672-A (GB)
Title: Improvements in or relating to corrosion-preventing lubricating oils
Filed: 1952-03-26
Abstract: A lubricating oil composition comprises a hydrocarbon oil and a minor proportion of oil-soluble petroleum sulphonic acids or of a mixture consisting of equal parts of petroleum sulphonic acids and their sodium salts, the acids having a molecular weight of 400-500.  The acids when used alone preferably have an ash content of less than 0.01 per cent.  From 0.02-0.05 per cent of the acids, or not more than 0.1 per cent of the mixture of acids and their salts, may be added to the oil.  Sulphonic acids having a molecular weight of 450 are specified.  Mineral lubricating oils may be used.  Oxidation inhibitors such as a -naphthylamine, 2, 4 - dimethyl - 6 - tert.-butyl phenol, phenyl - b  - naphthylamine and b  - naphthol may be added.  Specifications 317,406 [Class 91] and 689,731 (as open to inspection) are referred to.
Patent GB-724457-A (GB)
Title: Process for the production of finely divided silica and alkali metal formate
IPC: C07C51/10
Filed: 1953-03-23
Abstract: Alkali metal formate, together with finely divided silica, is produced by reacting an aqueous solution of an alkali metal silicate of a concentration not exceeding 20 per cent (w/v) with carbon monoxide at a temperature above 100 DEG  C. while intensely mixing or stirring the solution at increased pressure.  The process may be operated continuously by withdrawing a portion of the treated solution after separation of silica for the recovery of alkali metal formate, making up the remainder with fresh aqueous alkali metal silicate solution and recycling.  The treated solution leaving the reaction vessel may become substantially saturated with alkali metal formate.ALSO:Finely divided silica, together with alkali metal formate, is produced by reacting an aqueous solution of an alkali metal silicate of a concentration not exceeding 20 per cent. (w/v) with carbon monoxide at a temperature above 100 DEG C. while intensely mixing or stirring the solution at increased pressure.  The process may be operated continuously by withdrawing a portion of the treated solution after separation of silica for the recovery of alkali metal formate, making up the remainder with fresh aqueous alkali metal silicate solution, and recycling.  The treated solution leaving the reaction vessel may become substantially saturated with alkali metal formate.  The silica may be precipitated in the presence of a protective colloid which imparts hydrophobic properties to the precipitated silica, for example stearic acid and organic amines.
Patent GB-492191-A (GB)
Title: Improvements in and relating to frames for posters or other sheets
IPC: G09F15/00
Filed: 1937-03-18
Abstract: 492,191. Notice boards &c. ; photographic contact-printing frames; photograph frames. DAVIS, C. H. R. March 18, 1937, No. 7974. [Class 3 (ii)] [Also in Groups XV and XX] A poster or other sheet is secured to a sheet 2 of plywood by flaps 3, 3a hinged to a base 1 supporting the sheet 2, each flap being provided with a projecting metal or like strip 4 which enters a groove 5 in the base 1 to grip and tension the poster. The bottom of each groove is lined with rubber felt or other resilient material 6, and the adjacent ends of the flaps are provided with interengaging portions. The plywood sheet 2 may be replaced by a transparent panel. The Provisional Specification states that the device may be used as a frame for photographs or for printing-out negatives.
Patent GB-1446967-A (GB)
Title: Device for regulating the cooling air inlet to a vehicle engine
IPC: B60K11/08
Filed: 1974-02-21
Abstract: 1446967 Cooling motor vehicle engines SOC ANON AUTOMOBILES CITROEN 21 Feb 1974 [21 Feb 1973] 8029/74 Heading B7H In a motor vehicle having an inlet aperture 2 for admitting air for cooling the engine of the vehicle, a number plate 4a pivotally mounted on the bumper 3 is movable between a position in front of the bumper and a position in which it abstructs the lower part 2b of the aperture 2. The number plate 4a carries the registration mark on both faces and clips 6, 7 releasably hold the plate in the two positions. In another embodiment the number plate is slidably mounted so that it can be moved upwardly or downwardly from a position in line with the bumper to obstruct either the upper or lower part of the inlet aperture.
Patent GB-202349-A (GB)
Title: Improvements in and relating to doffing mechanism for spinning machines
IPC: D01H9/04
Filed: 1922-03-20
Abstract: 202,349. Alderman, E. R. March 20, 1922. Doffing arrangements.-In cap spinning- machines the caps are supported for doffing purposes by pivoted holders 64 and are steadied by plates 52 engaging their upper ends, and the bobbins are supported as required during the operations by swinging hook members 74. A frame 78 is provided with full and empty bobbin pockets 80, 82, Fig. 5, and is reciprocated laterally to register with the spindles, the necessary vertical and horizontal movements for doffing and donning the full and empty bobbins being effected by racks 102, 92. Bobbin setters comprising arms 132 are mounted on a pivoted shaft 138 and provided with friction pads 136, Fig. 6, so that when the shaft 138 is operated they turn the empty bobbins slightly to bring them into driving contact with the wharl. The cap supports are mounted on a reciprocable rail 42 which is advanced to a position above the spindles, and the spindle rail and lifting rail are operated so as to enter the caps into the plates 52. The supports 64, which are slotted so as to clear the bobbins, are operated to engage the lower edges of the cap, as shown, and are latched in that position. The rail 42 is withdrawn and the lifter rail is lowered, as shown in Fig. 7, to permit the frame 78 to effect the doffing and donning of full and empty bobbins, which are supported as required by the members 74.
Patent GB-651526-A (GB)
Title: Improvements in or relating to the method of operating internal combustion engines and to fuel injection devices for the same
IPC: F02M61/10
Filed: 1948-03-19
Abstract: 651,526. Working cycles: fuel injectors. TEXACO DEVELOPMENT CORPORATION. March 19, 1948, Nos. 8222 and 8223. Convention dates, March 25, 1947 and April 18, 1947. [Classes 7(ii) and 7(iii)] In an engine wherein the air entering a disc-shaped combustion chamber 219, Fig. 20, through a valve 218 is given a high velocity swirl which persists during the compression stroke, a fuel nozzle 222 in the side wall of the chamber is arranged to produce a pilot jet 252 directed to be swept near the sparking plug 257 and ignited thereby to form a flame front which then ignites the fuel air mixture formed towards the centre of the combustion space by one or more main jets 253, the swirl in the combustion space sweeping the combustible mixture formed during the remainder of the injection period into the flame front. The pilot orifice is designed to give a narrow, sharply defined jet, and the main orifice a spreading jet. In Fig. 20 the pilot orifice is formed as a groove 250 in the face of a spring-loaded injection valve 240. At the beginning of injection fuel flows through the groove 250 to produce the jet 252, and as pressure builds up the valve 240 opens the main orifice 245 to provide the main jet 253. The sparking plug 257 is positioned in a recess 258 so that the sudden rise in pressure therein on ignition of the pilot jet blows the flame quickly across the combustion space to ignite the main jet 253. In a modificaton the nozzle is formed with one pilot and two main orifices 71-73. Fig. 5, in the bulbous tip 70 below the needle valve 51, and the nozzle may be arranged so that the pilot jet strikes the roof of the combustion chamber before reaching the sparking plug. A second pilot orifice may also be provided, and in a further modification having a single pilot and main orifice in the nozzle tip 70, the fuel delivered thereto is caused to swirl by an insert 110, Fig. 15, situated below the needle valve 51 and provided with a helical passage 122 leading to a hemispherical space 114 in communication with the orifices. Specification 596,846 is referred to.
Patent GB-498789-A (GB)
Title: Improvements in wringers
IPC: D06F45/04
Filed: 1938-03-17
Abstract: 498,789. Wringers ; machinery safety devices. LOVELL MANUFACTURING CO. March 17, 1938, No. 8233. Convention date, July 1, 1937. [Class 138 (ii)] [Also in Group XXIV] In a wringer having means for quickly releasing the pressure in an emergency, the quick - release means are positioned in an unstable condition tending to movement in the releasing direction, but are prevented from so moving by the friction in the parts. A device is also provided for adjustably locking the release means in their unstable position, actuating means being provided to move the release means against the resistance of the locking means. The upper end of the channel - shaped member 19, which with a link 27 constitutes a toggle, is received in an aperture 21 in an end of the top bar 4 of which the other end is releasably secured to the other side stile. The actual pivot of the member 19 is constituted by a bent-over strip 22, 23 riveted within the member 19. When the lever 19 is moved to the holding position, the pivot 29 is slightly to the right of the line 23, 28. A spring plate 30, which is also riveted within the lever 19 and of which the upper end serves as a guide for the top bar in its approach to the upper end 31 and the side stile 2, is extended downwardly and inwardly to form a catch 35 engaging within an aperture 34 in the stile. A portion of the spring passes over an aperture 36 and is provided with a bolt and nut 38, 39 whereby the degree of engagement of the members 35, 34 may be adjusted and indicated by a pointer moving with the nut. Release is effected by depression of one of a pair of parallel bars extending along the rollers, the bars engaging arms formed on the lever 19.
Patent GB-851153-A (GB)
Title: Gas turbine jet-propulsion engine of the by-pass type
Inventor: KEENAN JOHN GREGORY
IPC: F02K1/52
Filed: 1958-03-14
Abstract: 851.153. Gas turbine jet propulsion engines. ROLLS-ROYCE Ltd. Dec. 9, 1958 [March 14, 1958], No. 8262/58. Class 110 (3). In a gas turbine jet propulsion plant containing a compressor, combustion apparatus and a turbine, having a main conduit, a by-pass duct branching from the main conduit on the upstream side of the combustion chambers so as to by-pass the combustion chamber and the turbine, the by-pass duct 19 comprises two spaced apart by-pass pipes which are arranged to receive the whole of the by-pass air, the bypass pipes extending longitudinally of the main jet pipe 16 and terminating short of the downstream end thereof. The by-pass pipes are of arcuate shape in section and are arranged to fit closely about the main jet pipe. As shown the by-pass pipes are supplied with air from a compressor 11 which is driven by a low pressure turbine 15, and which also supplies air to a high pressure compressor 12, driven by a high pressure turbine 14. The by-pass pipes are provided with means 23 to heat the by-pass air when additional thrust is required, and have variable area nozzles 25 and eyelid type thrust reversers 26. Specification 745,649 is referred to.
Patent GB-1460696-A (GB)
Title: Method of treating wood
IPC: B27K3/15
Filed: 1975-02-28
Abstract: 1460696 Wood-plastic materials MOSKOV EXPERIMENTAL FABRIKA BAYANOV IM SOVETARMII 28 Feb 1975 8404/75 Headings C3P and C3G [Also in Divisions D1 and G5] Wood-plastic materials are prepared by first irradiating wood with γ-rays from a Co<SP>60</SP> source in a total dose of from 2 to 100 Mrad, then impregnating the wood with at least one vinyl monomer in liquid or gaseous form, and thereafter polymerizing the impregnated monomer(s) by irradiating the wood with γ-rays from a Co<SP>60</SP> source in a total dose of from 1 to 30 Mrad. The first irradiation step is preferably effected in an inert gas medium, e.g. nitrogen or argon. The monomer may be methyl methacrylate, styrene, methyl acrylate, acrylonitrile or vinyl acetate, used in either liquid or vapour form; it may be used together with a swelling agent, e.g. methyl or ethyl alcohol, in order to enhance the penetration of the monomer into the wood. The resulting wood-plastic material may be treated with a solvent, e.g. benzene, to remove uncombined polymer from the composite material. Exemplified woods are spruce and maple. A particular use of the wood-plastic material is as resonance wood for making musical instruments, e.g. violins. Other applications are utilizable in construction, mechanical engineering, textile, shoe-making and shipbuilding industries, and in the construction of cooling towers.
Patent GB-1426755-A (GB)
Title: Heading indication systems and methods for use in determining the heading angle for adjusting heading indicators
IPC: G01C25/00
Filed: 1973-02-21
Abstract: 1426755 Photo-electric attitude determination ELECTRONIQUE MARCEL DASSAULT 21 Feb 1973 [21 Feb 1972] 8424/73 Heading H4D In a system for determining the heading angle C of an aircraft A, Fig. 1, taxing along a runway P prior to take-off by a unit 12 located at one side of the runway and comprising a laser 13 producing a vertical fan beam which is scanned unidirectionally through a predetermined azimuth sector 25, 27 directed across the runway, the aircraft A carries a fixed vertical mirror 31 (details Figs. 5 and 6, not shown) which reflects said laser beam back along or parallel to its incident path only when said laser beam is incident on the mirror 31 at a predetermined angle, e.g. 90 degrees, relative to the longitudinal axis of the aircraft, the required heading C being derived in the unit 12 from the direction α of the laser beam when such retro-reflection occurs; the heading C so determined is then transmitted to the aircraft A by modulating the laser beam at a frequency which is varied digitally in accordance with the value C, Fig. 9 (not shown), to enable the pilot to set the conventional heading indicator on the aircraft. As described the angle α is given by the time interval between two pulses rl, r2, Fig. 8 (not shown), produced respectively when the laser beam is (1) in its initial position 25 and (2) reflected back to unit 12 by the mirror 31. As shown in Fig. 2 the laser beam is scanned by a rotating mirror drum 18 and semi-transparent mirrors 23 and 16 are provided so that the pulses r1 and r2 are produced by respective photo-cells 29 and 22.
Patent GB-979621-A (GB)
Title: Improvements in or relating to arrangements for traffic monitoring and control
IPC: G06M1/10
Filed: 1961-03-08
Abstract: 979,621. Track apparatus. TELEFUNKEN G.m.b.H. March 8, 1961 [March 9, 1960], No. 8474/61. Heading B7N. [Also in Division H4] A railway traffic monitoring or control arrangement comprises a Doppler radar with its beam extending along the track and means for counting the cycles of the Doppler frequency signal produced by a vehicle moving along the track to give a signal proportional to distance travelled by the vehicle. The invention is described as applied to a railway shunting yard but it is also applicable to traffic control at railway level crossings and to safeguarding railway repair gangs by automatically operating a warning or a braking device when a vehicle exceeds a predetermined minimum distance dependent on the speed of the vehicle. As shown, the aerial of the radar 4 is located between the rails and slightly above the sleepers with its beam 3 directed to the right along the track and when a shunted wagon enters the beam 3 from the left the counter 6 is initiated by a rail contact 5 or by a relay which operates when the amplitude of the reflected radar signal exceeds a predetermined threshold value, the counter being restarted when another wagon enters the beam. In order to prevent a false distance indication due to a moving wagon rebounding from a stationary wagon, the radar provides two separate Doppler frequency outputs corresponding to forward and backward movement of the wagon, the counter 6 being arranged to count forwards or backwards according to which output it receives. The radar may also measure the speed of the wagon and control a brake 7 to slow the wagon to a permissable speed before it strikes the wagon in front of it.
Patent GB-976020-A (GB)
Title: Improvements relating to air-cooled internal combustion engines
IPC: F01P1/02
Filed: 1963-03-04
Abstract: 976,020. Air-cooled engines. GESELLSCHAFT FUR LINDE'S EISMASCHINEN A.G. March 4, 1963 [March 5, 1962] Sept. 20, 1962. No. 8488/63. Heading F1B. A portion of the cooling air supplied from a blower through a duct 4, Fig. 1, escapes through an outlet 5 on to an oil cooling surface. In Fig. 1 the air is directed over the wall of the crankcase 1 against which oil is sprayed by the crank-shaft motion. At corners of the crankcase, the air may be guided by guides 7. The aperture 5 may be provided in the duct 4 or in the flange on the block to which the duct is bolted. In Fig. 3 the air escaping through aperture 17 flows over an oil cooler 16.
Patent GB-587124-A (GB)
Title: Improvements in welding electrode holders
IPC: B23K9/28
Filed: 1944-05-05
Abstract: 587,124. Electrode holders. BRAITHWAITE & CO. ENGINEERS, Ltd., and STEEL, J. B. May 5, 1944, No. 8507. [Class 39 (iii)] The holder has clamping means with chucks or jaws a, a<1> one or more of which are freely floating, enclosed in a head part b' at the end of an extended body part l and operated by resilient thrust through an inclined face a<5> of a thrust block or jaw a to grip an electrode. The supply cable. c passes through a handle d and is secured to the shank a<2> of the jaw a. A bolt g is screwed into the rear face of the shank a<2> and carries between lock nuts a member e supporting the handle d. A spring h urges forward the bolt g to push the jaws forward against a front end plate b<3> on the. head b<1> so that they grip the electrode which is released by a lever f near the handle d. The head b' is connected by a bar b to a rear inclined member b<2> through which the rod g passes. An eye on the lever f passes over the rod g, and when the lever is pressed, the bar b is moved forward against the spring to release the electrode, the floating jaw a<1> being freed to move over the inclined face a<5> of the main jaw a. The clamping faces a<3>, a' of the jaws are grooved at a<7> to hold a short electrode aligned with or at an angle to the holder. The handle d, which may be secured to the bar b, is of heat-resisting compressed cardboard, and the body part is of similar material in three parts k, l, m. Alternatively both jaws are floating and are urged together by' inclined cam surfaces on a spring- pressed thrust block.
Patent GB-893008-A (GB)
Title: Frequency sensitive rapid scanning antenna
Inventor: ATTA LESTER C VAN
IPC: H01Q3/22
Filed: 1955-03-23
Abstract: 893,008. Aerials. HUGHES AIRCRAFT CO. March 23, 1955, No. 8525/55. Class 40(7). In a radar system with a stationary scanning antenna, rapid scanning with a narrow beam is accomplished by a periodic frequency variation of the antenna supply. The beam source consists of series of slots in a metal plate which lies at the focal line of a parabolic reflector. The slots are energized from a folded waveguide beneath the plate. In order to render the slots resonant over a specific frequency band either recesses are cut at each end or the slots are filled with dielectric. The energy from the slots is directed to the parabolic reflector either by a vane projecting over the slots or by second and third rows of slots on either side of the first row which act as a director and reflector. As shown, slots 42 are energized from the input 13 through the waveguide 12, the energy not radiated being absorbed by a dummy load at 14 to prevent reflections. The folded section of the guide is enclosed in cover member 24 which exposes a row of emitting slots on each side aligned near the focal lines 34, 46 of the reflectors forming the complete reflector 44. The vanes 20 direct the slot emission to the reflectors 44. The emitted beam is deflected about a mean position, in the plane containing the folded waveguide, through an angle which is a function of the slot separation along the waveguide and along the focal line.
Patent GB-728894-A (GB)
Title: Improvements in and relating to electric relays
Inventor: ROMMEL FREDERICK EMIL
IPC: H01H51/08
Filed: 1951-04-12
Abstract: 728,894. Electric selectors. TELEPHONE MANUFACTURING CO., Ltd. April 10, 1952 [April 12, 1951], No. 8535/61. Class 40 (4). An electromagnetic relay comprises a magnet which rotates a member to move a series of operating members to engage actuating members one by one so that successive energizations of the magnet operate the contact sets in turn through the said actuating members. Five stacks of contact sets 10, 12 are arranged in line over a magnet 15, as described in Specification 728,892. Successive operations of the magnet rock armature 16 and its associated link mechanism, upward movement of spring arm 33 being limited by a stop 36 so that pawl 32 drives a ratchet wheel 24 counter-clockwise. Pins 26, 27 on the ratchet wheel engage teeth 30a, 31a on spring-pressed plates 19, 20 to position projections such as 19a, 20a successively beneath members 13 so that upward movement of the plates 19, 20 at the succeeding operation of the magnet lifts the selected member 13 to operate the associated stack of contacts. The plate mechanism is replaced in Pig. 5 by cams 44 on a shaft driven by a gyral wheel 43 (also Fig. 6, not shown). The cams are replaced in Fig. 8 by studs 56 passing through the shaft. The studs are assembled in the hollow shaft with intermediate retaining plugs 57. The shaft is driven by a pawl and ratchet device (Fig. 7, not shown) and accurately positioned by engagement of an operating bar 52 with slots in an indexing wheel 60 (also Fig. 9, not shown).
Patent GB-217990-A (GB)
Title: Improvements relating to the electrical braking of vehicles
IPC: B60L7/00
Filed: 1923-03-26
Abstract: 217,990. Tilling-Stevens Motors Ltd., and Whitehorn, H. K. March 26, 1923. Dynamos and motors combined for transmitting power.-In an electric power-transmission system comprising an engine-driven dynamo feeding an electric motor driving a vehicle, rheostatic braking is obtained by successively closing the engine throttle, disconnecting the dynamo and motor, connecting resistance around the motor armature, and reversing and afterwards increasing the motor field excitation. In the arrangement shown in Fig. 1, the engine throttle is closed by an electromagnetic coil t, disconnection is effected at a switch C, and armature resistance R and field diverter resistances r are successively brought into use. The circuit changes are performed by a drum controller operated by a hand-lever and provided as an addition to apparatus of the kind described in Specification 104,819. Specification 188,021, [Class 38 (iii), Electric motor control systems &c.] also is referred to.