baber/WOPTO huggingface dataset:
Patent GB-1177033-A (GB)
Title: Decompression device for Valve-Controlled Internal Combustion Engines, particularly Injection Combustion Engines
IPC: F01L13/08
Filed: 1968-03-14
Abstract: 1,177,033. Decompression devices. MOTORENFABRIK HATZ G.m.b.H. March 14, 1968 [April 15, 1967], No. 12361/68. Heading F1K. A decompression device for valve controlled internal combustion engines, particularly injection internal combustion engines, has a decompression cam 8 acting on the rocker 6 of the engine valve gear, this cam being rotatable either by hand or by an automatic device so as to cut-off the decompression. A device which atuomatically terminates the decompression action comprises a driving member 10 which is coupled to the decompression cam and an actuating member 13 which co-operates with this driving member. The decompression cam and the driving member are non-rotatably arranged on a decompression spindle 9. When protracted lifting of the exhaust valve is required the hand adjusting lever 12 is operated. The abutment member (not shown) is moved from the flat 31 of the decompression cam to the cylindrical part of the latter and the exhaust valve is opened.
Patent GB-947053-A (GB)
Title: Control systems
IPC: H04N5/782
Filed: 1960-04-07
Abstract: 947,053. Automatic speed control. RADIO CORPORATION OF AMERICA. April 7, 1960 [April 27, 1959], No. 12456/60. Heading G3R. [Also in Division H3] A speed control arrangement for magnetic tape apparatus comprises a pick-up 34 associated with a tone wheel 32 for detecting the speed of head-wheel 20 and the position of the heads thereon, the control signals from the tone wheel being applied to an amplifier and shaper circuit 50 providing sharp pulses for each tone wheel pulse. The pulses from the circuit 50 are applied to a velocity detector system 56 including a monostable multivibrator 58 having triodes 70, 72, interconnected so that their states of conduction are reversed upon application of a control signal, and returning to their normal state after a predetermined period. The square wave output signal from the multivibrator 58 is applied to a trapezoidal wave generator 60, this multivibrator triggering another multivibrator 62 acting as a variable delay circuit supplying a square wave signal to shaper- and-amplifier circuit 64. A phase detector 66 receives signals from the generator 60 and amplifier 64, and provides an error signal indicating the voltage level of the trapezoidal wave at the time of occurrence of the pulse from the amplifier 64. The square wave from the plate of triode 72 is transmitted through cathode follower 74, a diode 92 conducting when the cathode follower is cut off. A capacitor 84 provides a trapezoidal wave having a steep leading edge and gradually sloping trailing edge, the capacitor being charged through resistor 86 and discharged through diode 88 and resistor 90. The triggering signals for the multivibrator 62 are derived from the grid of the triode 72, the amplifier 64 providing a short pulse occurring at the midpoint of the trapezoidal wave when the control pulse from the amplifier 50 occurs at the correct instant. The phase detector 66 provides a D. C. voltage whose polarity and magnitude indicate deviations of the speed of the head-wheel from a desired value. The output of the generator 60 is also applied to a phase detector 110 associated with reference signal generator 112 to produce error signals indicating the instantaneous positions of the heads. The error signals from the detectors 66, 110, are applied to an adder circuit 116, the combined signal being supplied to a control circuit 120 which amplitude modulates signals from oscillator 122. The modulated signals are applied to an A. C. amplifier and phase splitter 124 whose output controls motor 30 through amplifier 126. The motor 30 may be of the two-phase synchronous type operating below synchronous speed, or an electromagnetic brake may be used to control the speed of the motor. The error voltage from the adder circuit 116 may control the frequency of an oscillator providing power for driving a motor, employed in connection with a capstan speed control system 46. A low pass filter circuit 130 is connected between the phase detector 110 and multivibrator 62 to compensate for drift in reference frequency.
Patent GB-1437843-A (GB)
Title: Magnetic powder and the preparation thereof
IPC: H01F1/11
Filed: 1974-03-20
Abstract: 1437843 Cobalt modified γ-Fe 2 O 3  TDK ELECTRONIC CO 20 March 1974 [20 March 1973] 12463/74 Heading C1A A magnetic powder is prepared by dispersing a magnetic iron oxide powder in a solution containing a cobalt compound and a complexforming agent which forms a soluble complex with cobalt ions, adding an alkali to the dispersion, heating the dispersion to a temperature at which the cobalt compound is adsorbed on to the iron oxide powder, separating the iron oxide powder with cobalt compound absorbed thereon and heating the powder. The cobalt compound may be an inorganic salt, e.g. CoCl 2 .6H 2 O, CoSO 4 .6H 2 O and Co(NO 3 ) 2 .4H 2 O, in organic salt, cobalt hydroxide or cobalt oxide. Complex forming agents may include oxy acids having a hydroxyl group and a carboxyl group and salts thereof, e.g. nitric acid, tartaric acid and salts thereof, ethylenediamine, ethylenediaminetetracetic acid, acetyl acetone, pyridine, dipyridyl and hydrazine. In the examples heating is at from 50-600‹ C. in a nitrogen atmosphere.
Patent GB-972009-A (GB)
Title: Improvements in or relating to signal separating circuit arrangements
Inventor: MARTINEZ ANTONIO
IPC: H04N5/08
Filed: 1960-04-08
Abstract: 972,009. Television. MARCONI CO. Ltd. Jan. 13, 1961 [April 8, 1960], No. 12558/60. Heading H4F. In an arrangement for separating synchronizing signals from a composite video signal, the latter (a) (Fig. 2), is fed to the control grid of a pentode valve 2 (Fig. 1), the operating point of which is shown at X-X, and to the suppressor grid of which negatively-going pulses from a source 12 are supplied. The latter pulses (b) (Fig. 2) which occur in response to the leading edge of a line synchronizing pulse or (c) (Fig. 2) in response to the leading edges of line and field synchronizing pulses, and which may be derived from the line and field time base circuit or, it is stated, from a mono-stable multivibrator controlled by the synchronizing pulses, operate to cut-off valve 2 so that the anode waveform of the latter is as shown at (d) or (e) (Fig. 2). Separated field synchronizing pulses having the form shown at (f) or (g) (Fig. 2) are then derived at terminal 14 and separated line synchronizing pulses at terminal 15.
Patent GB-1026338-A (GB)
Title: Semiconductor strain-gauge
Inventor: MCKEOWN PATRICK JOSEPH AUGUSTI
IPC: G01B7/16
Filed: 1963-03-29
Abstract: 1,026,338. Semi-conductor strain gauges. STANDARD TELEPHONES & CABLES Ltd. March 25, 1964 [March 29, 1963], No. 12581/63. Heading H1K. A strain gauge comprises a body of singlecrystal silicon doped with indium. As shown, a strain gauge is manufactured by evaporating a layer of indium on to the major faces of a wafer of monocrystalline silicon, heating to diffuse-in the indium, and then masking and etching the surfaces to produce a narrow resistive strip (shown cross-hatched) containing indium on both major faces of the wafer. Contacts 1, 2, 4, 5 are made to the ends of the resistive strips and a contact 3 is made to the bulk of the wafer. The strain gauge is connected in a bridge circuit, Fig. 6 (not shown). The indium doped layer may also be produced by epitaxial deposition, and the Specification also states that slices cut from a crystal drawn from a melt containing indium may be used as strain gauges. It is stated that in silicon containing indium and having a resistivity in the range 0À001 to 100 ohm/cm., the resistivity is substantially invariable with temperature over the range 0‹ C. to 100‹ C.
Patent GB-549478-A (GB)
Title: Improvements in or relating to moulds
IPC: B29C33/00
Filed: 1941-09-29
Abstract: 549,478. Moulds for explosives &c. SCHERMULY PISTOL ROCKET APPARATUS. Ltd., SCHERMULY, A. J., SCHERMULY, C. D., and SCHERMULY, C. Sept. 29, 1941, No. 12588. Addition to 519,922. [Class 87 (ii)] To increase the number of articles which can be pressed in the mould of the parent Specification, distance pieces 1 are disposed between superposed charges 2, 4. The upper and lower surfaces of the pieces may be configured. The height of the mould is increased to accommodate several charges.
Patent GB-815820-A (GB)
Title: Improvements in or relating to electrical inductance coils
IPC: H01F17/04
Filed: 1955-04-30
Abstract: 815,820. Inductors. COLE Ltd., E. K., and KING, A. E. April 30, 1956 [April 30, 1955], No. 12596/55. Class 38 (2). In an inductance coil assembly for R.F. tuning, a magnetic core 6 is mounted at the end of a spindle 4 of deformable material (e.g. polythene or nylon) provided with longitudinal ribs 5, so that on screwing the spindle through a threaded aperture in a plate 3 a thread is cut in the ribs. The coil 2 is mounted on a polythene former 1 on the plate 3 so that the former, spindle and aperture are coaxial. Specification 763,488 is referred to.
Patent GB-322716-A (GB)
Title: Improvements in or relating to machines for packing hanks and skeins
IPC: B65B63/06
Filed: 1929-04-23
Abstract: 322,716. Snia-Viscosa Stabilimento Meccanico, and Boffetta, G. April 23, 1929. Parcelling by bundling.- Hanks or skeins of silk &c., are bundled by pressure and enclosure between sheets 13, 14, Fig. 4, of paper; the sheet 13 covers three sides and is secured by staples x to the other sheet at intervals, the ends of the skein being left uncovered. The bundling takes place within a press-box comprising a plate 1, Fig. 1, with vertical walls 2 and hinged doors 3. Cranks 24<a> on the doors are connected by a rod 23 so that when the left hand door is opened by a handle 3<1>, the right hand door is simultaneously opened. Upon the opening of the doors, slides 4 normally held in the lower position by springs 5, are raised by the interengagement of parts 3<a>, 4<a>. Above the press-box a cross bar 25 and plate 6 are mounted on an arm 27 so as to be swung into an inoperative position, shown in broken lines in Fig. 1. In use, the doors 3 are opened and a sheet 13 of paper is laid, so that, when the doors are closed again, the edges 13<a> lie between the lower edges of the doors and the upper edges of the slides 4. The skein &c. is introduced and a second sheet 14 of paper superposed with its edges 14<a> upon the edges of the doors 3. The cross-piece 25 is brought up into the vertical position, and the press-box and associated parts are raised so that the contents are compressed. The doors 3 are opened, thus raising the guides 4 so that they hold the superposed edges 13a, 14<a> between stops 12 and stapling slides 11 mounted in the cross bar 25. Staples are forced downwards by a plunger 8 and spring 10, and a cam 15 is rotated a half revolution, depressing a wedge 17 between the slides and stapling the edges of the paper together. The hand wheel operating the cam 15 strikes a weighted stop after a half revolution to prevent over-running.
Patent GB-272834-A (GB)
Title: Manufacture and production of valuable liquid and other hydrocarbons and derivativesthereof from products of the distillation or extraction of coal and the like
IPC: C10G1/06
Filed: 1926-02-11
Abstract: 272,834. I. G. Farbenindustrie Akt.- Ges. Feb. 11, 1926. Addition to 247,582. Hydrogenation, destructive. - The process of hydrogenating carbonaceous materials in presence of added combined nitrogen as described in the parent Specification and in Specification 247,587 is applied to the treatment of tar-like products obtained from carbonaceous solids by destructive hydrogenation, to fractions, components, distillation residues, or conversion products of tars, to lignite wax or similar materials, to mixtures of tar with coal or of coal or tar with tarry products of the destructive hydrogenation of the above materials, or of tar with similar liquid diluents.
Patent GB-928289-A (GB)
Title: Improvements relating to mudflaps for bicycles
Inventor: SMITH WILLIAM BERNARD
IPC: B62J15/04
Filed: 1961-04-08
Abstract: 928,289. Mudflaps for bicycles. MIDLAND GEAR CASE CO. Ltd. April 6, 1962 [April 8, 1961], No. 12744/61. Class 136(1) A mudflap for the lower end of the front mudguard of a bicycle consists of a substantially flat pear-shaped blank in the narrower portion of which is formed a groove 10 conforming in cross and longitudinal sections with the corresponding curved sections of the mudguard end. Shallow reinforcing ribs 12 and 13 are formed around the edges so that the flap tends to flex about the section 14-14. Metal strips 16 are anchored by tongues 17 in transverse slots and pass through longitudinal slots in the blank so that the ends may be turned inwards around the internal surface of the mudguard to attach the mudflap thereto. The blank is of a thermosetting plastic material.
Patent GB-128976-A (GB)
Title: Improvements in or relating to Pyrotechnic Signalling Devices.
Inventor: WILDER JOHN WILLIAM
IPC: F42B12/42
Filed: 1917-09-07
Abstract: 128,976. Wilder, J. W., and Wilder, G. H. Sept. 7, 1917. Pyrotechnic apparatus and devices.-An appliance for producing a chain of signal lights adapted to be fired from a gun or the like, comprises a cartridge within which is placed a casing 11 containing a series of light-giving elements 2 connected together and i to a parachute 9 by asbestos string 6, which is coiled and serves to hold the quick match 5 in position. In the lower end of the casing is fitted a wooden plug 12 above which is the powder charge 15 and a wad 13, a paper band 12b being secured round the plug. The casing is fitted in a cartridge, which may be of ordinary construction and provided with a charge 20 which serves to ignite the time-fuse 17. This fuse ignites the powder 15 and, in turn, the priming of the lights through the quick match.
Patent GB-1130434-A (GB)
Title: Method for the machining e.g. welding and cutting of materials by means of beamed radiant energy
IPC: B23K15/00
Filed: 1966-03-23
Abstract: 1,130,434. Removing metal by fusion; welding by fusion. STEIGERWALD STRAHLTECHNIK G.m.b.H. 23 March, 1966 [30 March, 1965], No. 12817/66. Headings B3N and B3R. In the machining or welding of a workpiece by a beam of energy, such as a beam of charged particles or a laser beam, additional independent forces are applied to the workpiece to remove, displace or hold together the softened material. During the welding of a workpiece 2 by a beam 1, the upper and lower edges of the molten metal may be acted upon by rollers 9, 10 or hammers 11, Figs. 4a, 4b. For cutting a workpiece, Figs. 5 (not shown) a rotary knife (13) or a percussion tool is used to remove the softened metal. In another embodiment, Figs. 6, 7 (not shown) the molten metal is removed by centrifugal force during rotation of the workpiece. In a further embodiment applied to both welding and cutting, Fig. 8 (not shown) forces are induced into the workpiece by one or two electromagnets (17), (18) supplied with alternating current.
Patent GB-689946-A (GB)
Title: Improvements in the manufacture of covers for bicycle saddles
IPC: B29C67/24
Filed: 1951-05-31
Abstract: 689,946. Moulding bicycle saddle covers. KOENIG, [nee ZIEGLER], M., [trading as WITTKOP & CO.]. May 31, 1951 [July 18, 1949], No. 12819/51. Class 87 (ii). [Also in Group XXXI] A bicycle saddle is made from material pressed or moulded into the shape of a saddle am pressed, together with a cover ing of material which does no crease in the pressing proces and which is treated on one sid with an adhesive substance, in a press. The parts of the outer coating b which project over the edge of the shaped piece are trimmed off and a further strip c of coating material is laid over the edges and sewn to the shaped piece and to the coating material b. The shaped piece has a strip a in its edge to receive the outer coating b and a part d of the strip c.
Patent GB-271462-A (GB)
IPC: B29D30/06
Filed: 1927-05-13
Abstract: 271,462. Soc. des ProcÚdÚs Fit. May 21, 1926, [Convention date]. Vulcanizing, cores for.-In tyre-retreading apparatus having an internal expansible rim, the expansion and contraction of which is controlled by the axial movement of conical members, rollers are interposed betwen the conical member and the shoes carrying the rim to minimize friction. Mounted at the centre of a mould 1, 2 is a screw 10 having right and left-handed threads, carrying conical members 121, 121a held against rotation by rods 130. The members 121, 121a bear against rollers 100, 100a on links 102<a>, 102, pivoted at their outer ends to the central bearing 12, and the shoes 23 which carry the leaves 22 forming the rim, respectively. On rotating the screw 10 by the hand-wheel 19 to cause the members 121 to approach the centre, the shoes are forced outwardly, radial movement being ensured by rods 30 in guides 31. Springs 105 secure retraction of the rim when the members 121 are withdrawn. In a modification, a single conical' member bears on rollers at the inner ends of the rods 30.
Patent GB-131120-A (GB)
Title: A Resilient Wheel.
Inventor: AVERY JOHN MOREHEAD
IPC: B60B9/00
Filed: 1918-08-08
Abstract: 131,120. Avery, J. M. Aug. 8, 1918. Tyre attachments to rims.-In a resilient wheel formed with a rubber ring 16 in the hub 12 and a four-ringed rim 1, 2, 3, 4, bolts 6 pass through the rim and are connected to lugs 7 which lie in a recess in the tyre 20 and engage transverse bars 23. The ends of these bars and the sides of the tyre are recessed to engage tyre-attaching rings 26 contractible by screw sleeves 27.
Patent GB-1420073-A (GB)
Title: Pipe joints
IPC: F16L13/12
Filed: 1972-03-20
Abstract: 1420073 Repairing joint leakages in pipes and tubes AVON RUBBER CO Ltd AVON LIPPIATT HOBBS Ltd and BRITISH GAS CORP 16 March 1973 [20 March 1972] 12982/72 Heading F2P In order to effect a joint repair without reducing line pressure, a mould is assembled about a leaking joint and an encapsulant injected thereinto under a controllably externally applied gas pressure, which is greater than the line pressure. Preferably, the mould assembly 7 has a rigid two-part shell (12, Figs. 1 and 2, not shown) surrounding a rubberized canvas or polymeric two-part liner (8). Encapsulant 32 is injected into the liner, through port 26, while gas pressure is applied from source 38 via selfbleed regulator 70. A sight tube 37 may be clamped off during hardening of the encapsulant.
Patent GB-957359-A (GB)
Title: Improvements relating to surge diverters
Inventor: MILLER ALAN DAVID
IPC: H01T1/04
Filed: 1962-04-04
Abstract: 957,359. Surge diverters. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 21, 1963 [April 4, 1962], No. 12994/62. Heading H2H. A surge diverter generally similar to that of Specification 677,949 has radially-angularlydisposed electrodes 4, each of U-shape and connected by rivets 11 to respective metal plates 12, so that as the arc is elongated in the chamber 5 the arc roots move out along the U limbs remote from the rivets 11, thus causing the arc current to flow along a path of progressively increasing length in the electrodes 4 and thereby augment the electromagnetic blow-out effect of a coil 14. The chamber 5 decreases in cross-section towards its periphery to facilitate arc extinction and the arc gases are vented through channels 6, 7 to a space 8, the whole assembly being formed by combining two identically-recessed insulating discs 1 each carrying an electrode 4. The series-connected coil 14 is protected against excess voltage by a non-linear resistor 17 in parallel thereto and a second non-linear resistor 25 in parallel with the electrodes 4 provides for adjustment of voltage distribution when a number of the diverters are series-connected in an assembly. In a modification, Fig. 4 (not shown), the resistor 17 is annular and its central space contains a member of low remanence magnetic material to increase the magnetic field strength in the gap between electrodes 4. In another modification, Fig. 5 (not shown), the resistor 17 is replaced by a spark gap.
Patent GB-276088-A (GB)
Title: Improvements in or relating to absorption refrigerating apparatus
IPC: F25B17/06
Filed: 1926-05-21
Abstract: 276,088. Boving, J. O. May 21, 1926. Refrigerating, absorption machines for.-The generatorabsorber and the evaporator of a reversing absorption apparatus of the rocking type are divided by partitions a', h<1> into compartments, which are connected by syphons a<2>, h<2> disposed over the partitions, so as to enable the rocking of the apparatus to be delayed until nearly the end of the generating and absorbing periods. During generation, the refrigerant passes through the perforated pipe c to the rectifier d and thence to the condenser c from which it flows through an axial pipe i to the compartment h<3> of the evaporator; from thence it is abruptly transferred to the compartment h<4> by the automatic flooding of the syphon h<2>, the transfer of the refrigerant resulting in the rocking of the apparatus from the generating to the absorbing position. At the end of the generating period, the syphon a<2> transfers the weak liquor in the generator from the compartment a<4> to the compartment a<3> so that the whole of the liquor is subjected to the bubbles of vapour returning from the evaporator during the cooling of the generatorabsorber. During absorption, the evaporator may be located either in a safe j or a brine tank q, and the vapour is absorbed by the weak liquor in the compartment a<3> of the generator-absorber until the flooding of the syphon a<2> results in the abrupt transfer of the liquor to the compartment a<4> and the rocking of the apparatus to the generating position. The generator is heated by an electric heater b, the current to which is interrupted by the rotation of a contact on a disc b<1> on the pivot of the apparatus, and the generator-absorber and condenser are cooled by water pipes l, g respectively. The water supply to the pipe l is controlled by a 3-way valve n which communicates with the outlet of the pipe g in the condenser, a drain pipe o and the inlet m to the pipe l. In a modification, two machines are mounted to turn about a common axis in such a manner that when one is in the generating position the other is in the absorbing position.