baber/WOPTO huggingface dataset:
Patent GB-269038-A (GB)
Title: Improvements in or relating to agricultural digging machines
IPC: A01B35/22
Filed: 1926-08-12
Abstract: 269,038. Ekehorn, J. Aug. 12, 1926. Mechanical-spade and similar machines; tools; adjusting and lifting parts.-In digging-machines in which the digging-tools are actuated by a crank shaft and are controlled by links connecting their shanks to the machine frame, the shanks 9, 10 of the tools are adjustably fixed in pairs in two-part crossheads 8 mounted on the crank shaft 6, a housing for a shank being provided in both parts of the crossheads. The crank shaft 6 is mounted in a pivoted frame 2 adjustable by means of a rack 3 and pinion 4. The shanks are adjustably secured in the crossheads by nuts 11. A bracing member 12 connects the shanks of each pair together, and one is extended upwards and connected by a link 14 to a bracket 15 on an angularly adjustable shaft 16. Resilient teeth 23 are mounted on bars clamped in the ends of the shanks 9, 10. They are curved as shown, their upper ends being wound round the carrying bars in spirals and secured by the insertion of their extreme ends in slots. The bars have end heads 22, and the teeth are separated by spacing collars.
Patent GB-1004275-A (GB)
Title: Mining apparatus
Inventor: BOLTON DOUGLAS HERBERT HEWLET
IPC: E21C35/14
Filed: 1963-05-20
Abstract: 1,004,275. Mineral-mining installations. DOWTY MINING EQUIPMENT Ltd. May 20, 1964 [May 20, 1963; March 9, 1964], Nos. 19983/63 and 9872/64. Heading E1F. [Also in Division F1] Associated with a series of fluid-actuated jacks for advancing as required the means by which a mineral-mining machine is guided along a face is a control means which is so responsive to the advance of a portion of the guide means as to render the jack or jacks causing the advancement of the portion inoperative after the portion has been advanced by a predetermined extent, which can be varied as required by operating conditions. The means can involve comparing the extension of a jack with a predetermined length by utilizing the extension of the jack to create a fluid pressure or an electrical signal of a magnitude dependent on the degree of the extension of the jack. Said signal is compared to a signal of standard magnitude and the difference in magnitudes of the signal is utilized in the operation of a valve 18 controlling the supply of pressurised fluid to the jack 14. Preferably the variable electrical signal is obtained from a potentiometer 23 actuated by the jack. Specification 991,008 is referred to.
Patent GB-148164-A (GB)
Title: Improvements in or relating to artificial teeth
IPC: A61C13/10
Filed: 1920-07-09
Abstract: 148,164. Myerson, S. April 6, 1916, [Convention date]. Teeth, artificial.-An artificial tooth which may be replaced without re-vulcanization of the denture comprises a porcelain body portion detachably connected to a metal. fitting having rearwardly projecting anchoring-means permanently secured to a vulcanite denture. In the form shown in Figs. 3 and 5, the porcelain tooth 12 is formed with a keyhole-shaped recess 17 having a reduced bore 19 extending towards the incisal edge 14, and is fitted to a correspondingly-shaped metal plug 20 having an integral backing-plate 24 and pins 25 which extend into the vulcanite of the denture. Fig. 8 shows a modified form of plug having a perforated ear 25a in place of the pins. Fig. 9 shows a plug without a backing- plate and with anchoring-pins 25, or an ear similar to that shown in Fig. 8.
Patent GB-222097-A (GB)
Title: Improvements in or relating to electro-magnetic relays
IPC: H01H45/00
Filed: 1924-08-25
Abstract: 222,097. Levy, L. Sept. 22, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Amplifying circuits employinq vacuum or lowpressure apparatus.-Current fluctuations to be relayed are superposed, e.g. by means of a transformer 9, on the energizing circuit of a magnet 4, Fig. 1, or 5, Fig. 2, and a vacuum tube 16, centrally mounted in the magnetic fields, is provided with electrodes 2, 3 in a battery circuit from which the relayed current, due to the counter E.M.F. produced by rotation of the fluid in the tube, is taken e.g. by a transformer 9. In the construction of Fig. 1, the electrode 2 is disposed centrally in the tube and the electrode 3 is annular. In the construction of Fig. 2, annular electrodes 2, 3 are used in an annular tube. In a modification a heating current is supplied to the electrodes, Fig. 2. The magnet 5 is laminated radially. Oscillation generators.-For producing highfrequency oscillations, the primary circuit includes a wave winding 26, Fig. 3, associated with one magnetic pole, Fig. 2, and shunted by a condenser 25 to produce a circuit tuned to the desired frequency. The fluid in the tube 16 may be, for lowfrequencies, a liquid, and, for high-frequencies, mercury vapour, argon, or neon.
Patent GB-1093456-A (GB)
Title: Method of regulating the oxygen blowing process
IPC: C21C5/30
Filed: 1965-05-12
Abstract: Steel e.g. with maximum carbon content 0.8% is produced by blowing oxygen from a nozzle on to a bath of pig iron, e.g. containing 4% C, 0.4% Si, 0.5% P and Mn, in three stages e.g. in a total blowing period of 18 minutes: (1) blowing oxygen at constant rate of supply, e.g. 3.6 m3O2/min/ton, and with nozzle at constant level for sufficient time to complete oxidation of Si and Mn in the bath; (2) e.g. from 2nd to 14th minute, adjusting the rate of oxygen supply and/or the nozzle level in dependence upon continuous measurements of the carbon combustion rate in the bath to maintain this rate between predetermined limits, e.g. between 2 and 2.5 KgC/ton pig iron, until the carbon content of the bath has been reduced to a predetermined value e.g. 1.2%; (3) blowing as in (1), e.g. at constant rate of 2 m3O2/min/ton, until the carbon combustion rate has been reduced to a predetermined value e.g. 1.8 KgC/ton.
Patent GB-1305996-A (GB)
IPC: F02D21/08
Filed: 1970-04-27
Abstract: 1305996 Treating exhaust NISSAN MOTOR CO Ltd 27 April 1970 [30 May 1969] 20147/70 Heading F1B In an anti-pollution system of a motor vehicle I. C. engine, the exhaust gases can be recirculated from exhaust pipe 12, Fig.1, through conduit 14, water separator 15, filter 16, restriction 14a, solenoid valve 17 and nozzle 18 into the inlet manifold 11. However, the electrical circuit of the solenoid 20, 21 incorporates a temperatureresponsive switch 36 which remains open when the engine is warming up so that the valve 17 remains closed to render the system inoperative when the engine is cold and few nitrogen oxides are present in the exhaust gases. The electrical circuit also includes an ignition switch 26, a switch 24 responsive to engine or vehicle speed, and a switch 23 responsive to inlet manifold vacuum. In an alternative embodiment, Fig.3 (not shown), the anti-pollution system comprises a unit (42) for recirculating the exhaust gases and an afterburner unit (43), the units being controlled by a double-acting temperatureresponsive switch (36a) so that the afterburner unit is operative during engine warm up to burn off hydrocarbons, and the exhaust gas recirculation unit is operative when the engine is up to temperature for reducing nitrogen oxides. The switch (36a) is of the bimetal type but may be replaced by a cam-actuated switch (36b), Fig.4 (not shown), responsive to the position of the carburetter choke valve (49) and thereby to engine temperature.
Patent GB-817492-A (GB)
Title: Improvements in method and apparatus for coating metal conduits with metal
Inventor: HEATON GEORGE L
IPC: C23C2/38
Filed: 1956-06-29
Abstract: 817,492. Coating metal conduits. ROME CABLE CORPORATION. June 29, 1956, No. 20194/56. Class 82(2) [Also in Groups XII and XXXIV] Metal conduit sections are cleaned by heating and oxidizing the interior and exterior surfaces, reducing the oxide to a fresh metal base and dipping the conduits into molten metal, the interior surfaces being pre-heated by blowing fresh air and then reducing gas through the conduits. Steel conduits 10 are loaded on to rack 11 and carried by screw conveyers 12, 13 to oxidizing furnace 14 where they are heated to about 700-1000F. to remove organic material and to oxidize the surfaces, air being blown into the interior of the conduits. The conduits pass in timed sequence on to transfer rollers to the oxidizing furnace 24, where they are engaged by screw conveyers and subjected to about 1300F. in a reducing atmosphere, pipes in the furnace blowing the admixture into and through the conduits. The conduits pass out of the furnace through a portion at about 1000F. into which cooling gas is admitted. The conduits are then received by two star wheels (Figs. 12 and 13) 58, 59 the spokes of wheel 58 being advanced 7 degrees with respect to those of wheel 59 so that the conduit is introduced into, and lifted from, the zinc coating bath 52 at an inclination to the horizontal. A lift arm 62 raises the higher end of the conduit whilst transfer arm 63 moves the lower end of the conduit under hold down member 61. A pump 67 in the molten zinc provides an upward flow of clean zinc in the area where the conduit enters the bath. The conduits are removed from the zinc bath by magnetic rollers and excess metal is removed at 89. The conduits are finally carried by a chain conveyer to a chromate bath 94 and imbonding rack 98.
Patent GB-688306-A (GB)
Title: Improvements in or relating to glass ventilators
IPC: F24F13/08
Filed: 1950-08-15
Abstract: 688,306. Louvred ventilators. PILKING- TON BROS., Ltd., and WILCOCK, J. E. July 18, 1951 [Aug. 15, 1950], No. 20267/50. Class 137 A built-up glass ventilation block for incorporation in wall structures' and comprising top and bottom walls 2, 3 and two side walls 1-1 is characterized in that each side wall 1 is provided with a series of equidistant J-shaped ribs 4 sloped to support glass louvres 7 within the block, and projections 6 to limit the upward movement of the louvres, lips 8 being provided on the walls 2, 3 and arranged on opposite sides of the assembled block. Each wall is recessed as at 1a, 2a, 3a to facilitate the fixing of the block in the wall. In an alternative construction a vertical series of gaps is provided in the ribs 4 to accommodate a removable rectangular former element, the wall elements being held together e.g. by binding tape, during transit.
Patent GB-1384643-A (GB)
Title: Ferroresonant voltage regulators
IPC: G05F3/06
Filed: 1972-05-02
Abstract: 1384643 Automatic voltage regulation I E BRUSILOVSKY K N SHIKHAEV A T ZHIGALOV and R K BALIAN 2 May 1972 20332/72 Heading G3X  A ferroresonant voltage regulator includes an autotransformer, in the primary circuit of which there are connected compensating feedback windings associated with a mains choke and a filter choke. In the circuit shown, an input voltage 15 is applied to tapped primary windings 7, 8 of an autotransformer 3 in series with a transformer feedback winding 10, mains choke 1 with principal 5 and feedback 6 windings, and feedback windings 12, 13 of a filter choke 2. A capacitor 4 forms a parallel resonant circuit with the transformer secondary winding 9, and a series resonant circuit with the principal winding 11 of the choke 2. The parallel resonant circuit is tuned to mains frequency, while the series circuit is tuned to the third or higher harmonic of the mains to improve the waveform of the regulated output 14.
Patent GB-1320058-A (GB)
Title: Data transmission system
IPC: H04L12/423
Filed: 1971-04-19
Abstract: 1320058 Telegraphy INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [19 Feb 1970] 20335/71 Heading H4P A data transmission system comprises a group of terminals A...N connected serially to a central station 1 which is arranged to transmit to one end 7 of the series connection a tone signal of frequency or frequencies outside the date frequency range to initiate data transfer from the terminals, wherein each terminal comprises a bandstop filter 13 which is operative, when the terminal has data to transmit, to prevent transmission of the tone signal to the next terminal. Using MODEMS 2, 12, central station 1 can send data over line 7 to the terminals and receive data from the terminals over line 8. A terminal wishing to send data actuates a switch 10 to connect filter 13 into line 8. The tone on line 7, is passed by bandpass filter 6 (which would block data) and detected at 11 in the first terminal wishing to send data. After the terminal has sent its data it reverses switch 10 and the tone proceeds to the next terminal. When the tone is detected at 5 at the central station 1, the latter stops sending the tone (this permits any terminals now wishing to send data to actuate their switches 10 anew) and may send data to the terminals. The tone can be one or several frequencies. Tone detectors 11 may be connected to line 7 instead, with their corresponding switches 10 also in this line. Different tones may be used for different groups of terminals, permitting some terminals to be polled more frequently than others, each filter 13 blocking only the frequency band occupied by the tone relating to its terminal. Further terminals may be addressed in a conventional way.
Patent GB-749625-A (GB)
Title: Improvements in or relating to fluid pressure operated friction clutches or brakes
IPC: F16D25/062
Filed: 1952-08-13
Abstract: 749,625. Friction brakes. HINDMARCH, T. July 16, 1953 [Aug. 13, 1952], No. 20372/52. Class 103 (1). [Also in Group XXIV] A friction brake or clutch, operable by the introduction of pressure fluid into a pressure cavity which forms a closed container both in the engaged or disengaged positions and which is expansible by the relative telescoping movement between members making fluid sealing engagement therebetween, is characterized in having two or more chambers or sets of chambers which are expansible under fluid pressure to engage and/or disengage the brake &c., and means to control the passage of fluid from one chamber to another chamber to control the rate of engagement &c., and/or torque carrying capacity of the brake &c. In one form, fluid under pressure is fed via a duct 9, 10, Fig. 1, into expansible chambers A, B to engage a clutch. The chambers A, B are connected by a hole 19 in a cylindrical spigot 18 which coacts with a similar spigot 17. Initial engagement of the clutch takes place due to the action of the pressure fluid in the chamber A, the hole 19 thus being opened by the axial separating movement of parts 2, 3 to allow the pressure of the fluid to build up in the chamber B to complete the engagement. Fluid under pressure is supplied through conduits 11, 12, 13 to a cavity 14 to disengage the clutch. In one modification the chambers A, B are connected by a valve V, Fig. 2, and the operating fluid can escape to the exterior of the clutch when the pressure in the duct 9, 10 falls sufficiently to allow a spring biased valve 22 to move radially inwards. Bleed holes 16 also connect the chamber B to the exterior of the clutch. The valve V can be arranged radially or axially, Figs. 4-7 (not shown), according to whether or not centrifugal force is to effect its action, and may be either of the spring biased type or may be of the type reacting only to the pressure acting upon it. Alternatively, the valve V may be of the non-return type, Fig. 8 (not shown). The restricting means between the chambers may be formed by the gaps between the spigots and more than two chambers A, B can be provided, Figs. 9, 10 (not shown). A considerable number of spigots, forming a labyrinth can be combined with a radially arranged valve, Fig. 12 (not shown). Each chamber B, &c. may contain an annular flexible piston 95, Fig. 14, tending to covre holes 98 when in the disengaged position. The clutch actuating mechanism may alternatively comprise a stepped piston 67, Fig. 17, in a corresponding cylinder 68 rotating with the clutch and to which fluid under pressure is admitted through a duct 66. The piston engages the clutch through springs 70 and levers 69. Similarly, annular stepped pistons may act upon springs to engage the clutch, Fig. 19 (not shown). Specification 622,153, [Group XXIV], is referred to.
Patent GB-1127491-A (GB)
Title: Improvements in or relating to industrial trucks
Inventor: GOODACRE CECIL
IPC: B60N2/38
Filed: 1965-05-14
Abstract: 1,127,491. Low-lift trucks. LANSING BAGNALL Ltd. 2 May, 1966 [14 May, 1965], No. 20406/65. Heading B8H. An industrial pallet truck comprises an upright housing 13 containing an electric motor powered by a battery 14 for driving a ground wheel 15 and an operator platform 11 on which an operator can stand to drive the truck, the housing 13 and platform 11 being arranged in side-by-side relation across the width of the truck. Two load-carrying forks 24, each with a pair of trail wheels 25, extend forwardly of the housing 13 and platform 11. Control means for the motor and the ground wheel 15 comprises a steering wheel 19 supported forwardly of the platform 11 and speed and direction controls on a control arm 20 projecting rearwardly of the steering wheel 19 over the platform 11. A seat pad 22 is provided for the operator to rest against with his body directed transversely of the longitudinal axis of the truck and facing away from the housing 13, the controls being accessible from this position. A " dead-man " brake pedal 21 is operated by the operator's left foot and a horn-button 23 provided for operation by his right foot. The height of the pad 22 may be reduced sufficiently to form a seat, so that the operator may either stand or sit while driving the truck.
Patent GB-205594-A (GB)
Title: Improvements in or relating to the treatment of tobacco leaf
IPC: A24B1/08
Filed: 1922-07-26
Abstract: 205,594. Vize, D. N. July 26, 1922. Tobacco.-An apparatus for the curing and drying of tobacco leaf comprises a rack consisting of two bars c each provided with pins d adapted to pass through holes in the other bar. With the bars pushed close together and the pins of each bar protruding through the other, the tobacco leaves are hung on the pins by piercing the stalks and the rack is placed horizontally on beams or hung up until the curing and drying is completed, after which it is placed on a stand a above a removable receptacle h to receive the leaves when removed from the pins. The separation of the bars c to remove the leaves is effected by a frame b attached to the front bar c, as by hooks and staples, and sliding in a groove or rabbet g in the stand a, the back bar c being held by a stop e. A foot-lever may be provided for operating the frame. Guide bolts f limit the separation of the bars. A detachable hoop-iron cover i prevents injury to the leaf when hung up.
Patent GB-978790-A (GB)
Title: Growth of metal fibers
IPC: C30B23/00
Filed: 1962-05-28
Abstract: <PICT:0978790/C6-C7/1> <PICT:0978790/C6-C7/2> Single metal crystals or whiskers are grown on a substrate in a continuously evacuated chamber by vaporizing the metal, and maintaining the substrate at a temperature lower than the vaporizing temperature of the source metal, a part of which, in vaporized form, acts as "getter", to maintain the oxygen pressure below the oxide dissociation pressure. Details of these pressures are given.  Source metals specified are Cr, Au, Ni, Cu, Fe, Co, and alloys thereof.  The substrate may be the same as or different from the source metal.  A fused silica sealed tube 11, Fig. 1, is surrounded at its lower end by a furnace 12, and is joined to a second tube 15, connected to a vacuum and having a lateral extension 16.  A cylinder of source metal 20 has centrally suspended within it the growth substrate body 21, which extends upwards beyond the heating zone, whereby the temperature of the substrate is maintained below that of the source metal. The substrate is suspended by a tungsten wire 21, attached to a winch 27, the axis of which is rotated gy magnets 30, 33.  In modifications, the source metal 20 may be in the form of a sheet wound as a spiral, by which direct heat falls on the outer surface only, and the inner coils are at successively lower temperatures. In a further form, Fig. 4, the source metal 50 is a wire mounted within the substrate body 51, and are electrically connected together, and mounted in the furnace maintained at a temperature below vaporizing temperature of the source metal.  The current passing through the wire 50 vaporizes the metal, but the electrical resistance of the larger body of the substrate results in a lower temperature.  Examples are given using the source metals as specified to form single crystals on the following substrates: Mo screen ; Au, Cu, and Fe as sheet metals, giving growth time, length of crystal, and vaporizing temperatures.
Patent GB-873675-A (GB)
Title: Improvements in heat exchangers
Inventor: WORLEY NORMAN GEORGE
IPC: F28D7/16
Filed: 1958-06-26
Abstract: 873,675. Water-tube steam boilers; superheaters. BABCOCK & WILCOX Ltd. June 25, 1959 [July 26, 1958], No. 20518/58. Classes 123(2) and 123(3) A boiler generating steam at a high and a low pressure comprises an upright cylindrical pressure vessel 1 having a top inlet 3 and a lower outlet 5 for a heating fluid, for example the carbon dioxide coolant from a graphite-moderated nuclear reactor. The vessel contains a series of banks of tubes forming the heating surfaces of the high and low pressure boiler sections. The L.P. boiler consists of an economizer 13, a steam generating section 15 delivering steam into a drum 9 and a superheater 17. The H.P, boiler consists of economizers 23A, 23B, a steam generating section 25 delivering steam into a drum 11 and a superheater 27. The tube banks constituting the economizers and superheaters consist of a large number of vertical platens of parallel-connected, multiple-bend, horizontal tubes of the form and of the arrangement within the vessel described with reference to Figs. 2 and 3 of Specification 865,427. The heating gases flow transversely across these tubes through which water or steam pass at a high velocity. The steam generating banks 15, 25 consist of panels of vertical tubes extending between horizontal headers, the heating gases passing longitudinally over the tubes in which the working medium flows at a comparatively low velocity in natural circulation paths including the drums 9 and 11 respectively. As shown in Figs 4 and 5 the generating sections 15, 25 comprise upper and lower headers 73, 77 between which extend a row of tubes 75 each having longitudinal ribs 75A. The headers are connected by tubes 79 passing through thermal sleeves 81 mounted in the vessel wall to tubes 83 which are connected to external inlet and outlet headers. The tubes 79 and associated thermal sleeves of the flanking portions of each bank are set at an angle to enable the outermost tube panels to be placed near the vessel wall and so utilize fully the space within the vessel. In modifications each pair of headers 73, 77 serves two or four rows of tubes through trifurcating pieces, (Figs. 7 to 13 not shown). In these cases the longitudinal ribs on the tubes are arranged to intermesh.