baber/WOPTO huggingface dataset:
Patent GB-1308105-A (GB)
Title: Arrangement for coupling two objects
IPC: F16F15/00
Filed: 1971-04-19
Abstract: 1308105 Resilient mountings HOLLANDSE SIGNAALAPPARATEN NV 19 April 1971 [11 Feb 1970] 21242/71 Heading F2S A member 9/17 is mounted on a member 16/18 by at least one spring 25 and at least three coupling arrangements each of which comprises two parallel linkage systems. In each coupling arrangement, one of the two systems can swing as a whole with respect to the member nearer it around a first axis, not parallel with the axes around which the links of the system pivot with respect to each other, and the other system can swing as a whole with respect either to the member nearer it or to the first system, around a second axis parallel to the first axis. There are three helical springs 25, 28, 31 housed in telescoping tubes anchored by universal joints, e.g. 26, 27, to the members. They may be combined with shock-absorbers. The mounting allows relative translational movement of the members but prevents rotation. The coupling arrangement which has its first and second axes in the plane C has a first system consisting of an arm 12/13, and arms 10, 11 pivotable at one end about parallel axes 2/5 and 3/6 perpendicular to the arm 12/3 and connected at the other end via universal joints 1/19, 4/20 to the member 9/17 which constitutes the fourth side of the parallelogram linkage, and a second identical system consisting of the arm 12/3, arms 14, 15 and part of the member 16/18. The first system as a whole pivots about an axis (the first axis) joining the joints 1/19 and 4/20, and the second system as a whole pivots about a second axis, parallel to the first, that joining the joints 7/21 and 8/22, and these axes are perpendicular to those, e.g. 2/5, around which the links of each system pivot. The other two coupling arrangements are similar and the planes C, D, E containing the first and second axes of each arrangement are mutually perpendicular and meet at a point Z which is arranged to be the centre of gravity of the supported structure. Figs. 3a- 3d and 4a-4f (not shown) depict alternative coupling arrangements. In each of the Fig. 3 arrangements, each system swings as a whole with respect to the member nearer it. In each of the Fig. 4 arrangements, one of the systems swings as a whole with respect to the other.
Patent GB-647902-A (GB)
Title: Process for the catalytic conversion of hydrocarbon oils
IPC: C10G11/04
Filed: 1947-08-06
Abstract: A silica-magnesia catalyst prepared by calcining a mixture of precipitated silica hydrogel and precipitated magnesia hydrogel is used to crack hydrocarbons to produce gasoline and is substantially free from alkali metal compounds.  The catalyst does not contain more than 50 per cent by weight of magnesia and is calcined at 500-875 DEG C. and used at 350-650 DEG  C., at atmospheric or higher pressures. In preparing the silica gel an excess of acid is desirable for precipitation from silicate solutions.  A solution of a magnesium salt is added followed by a volatile base which precipitates magnesia hydrogel.  Catalysts can also be prepared by mixing slurries of the gels, drying, and calcining, or a magnesium salt is dissolved in water to which is added a solution of a silicate.  Magnesium salt and acid can also be used as the precipitant.  Removal of alkali metal compounds is effected by washing with dilute hydrochloric acid, ammonium chloride or magnesium chloride, followed by water.  The catalysts after use are reactivated by heating in an oxygen-containing atmosphere to remove deposited carbon.
Patent GB-224628-A (GB)
Title: Improvements in or relating to devices for detachably securing a rotatable member to a hub of a wheel, or the like
IPC: B62M3/00
Filed: 1923-08-24
Abstract: 224,628. Sant, A. C. Aug. 24, 1923. Securing wheels &c. on shafts.-A pair of cranks 1 are secured to the hub 8 of a wheel, &c. by a pair of cylindrical sleeves 6 each of which is secured at right-angles to a crank at one end and has an inclined face 7 at the other, the sleeves extending into the hub 8 with their faces 7 abutting and being drawn axially towards each other by a screw-threaded spindle 10 extending co-axially through them so that the faces 7 over-ride one another and the ends of the sleeves form a locking engagement with the internal surface of the hub.
Patent GB-386900-A (GB)
Title: Improvements in and relating to electric fuses
IPC: H01H85/42
Filed: 1932-07-29
Abstract: 386,900. Fusible cut-outs. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) July 29, 1932, No. 21481. Convention date, July 31, 1931. Drawings to Specification. [Class 38 (i).] The outlet of an electric safety cut-out device is constituted by a unit comprising a plurality of closely-assembled de-ionizing plates having narrow passages therebetween and their surfaces disposed substantially parallel to the direction of the flow through the opening.
Patent GB-1069942-A (GB)
Title: Tin oxide film electrical resistances
IPC: H01B1/00
Filed: 1965-05-20
Abstract: 1,069,942. Oxide film resistors. SOCIETE D'ELECTRONIQUE ET D'AUTOMATISME. May 20, 1965 [June 2, 1964], No. 21488/65. Headings H1K and H1S. A process for making a tin oxide semiconductor resistor comprises mixing solutions of tin chloride, aluminium chloride, and zinc oxide, and spraying the mixture through an oven on to a heated dielectric substrate. The resulting resistor comprises a film of tin oxide doped with aluminium oxide, the zinc oxide acting as an oxidizing agent both within the mixed solution and in the sprayed mist. Only a small proportion of the zinc oxide is incorporated in the deposited film. Indium, gallium and boron are also referred to as suitable doping impurities.
Patent GB-440620-A (GB)
Title: Metal framework for the bodies and doors of vehicles such as motor buses, cars, waggons and the like
IPC: B62D31/02
Filed: 1935-07-29
Abstract: 440,620. Vehicle bodies and doors. GRETLER, E., 4, Rue du Lion d'Or, Lausanne, Switzerland. July 29, 1935, No. 21511. Convention date, July 27, 1934. [Classes 103 (ii) and 108 (i)] A vehicle framework comprises metal tubular cross members, pillars and roof arcuate members and provision is made for the sealing by rubber &c., of the joints between the body pillars and the pillars forming part of the doors. The frame comprises pillars 1 of rectangular tubes secured by welding or riveting to arcuate tubular roof members 3, transverse tubular cross members 2 having flanges 4, 5, Fig. 3, to which the floor boards 6 are secured, and longitudinal beams 16, 17. The pillars 1 are provided with shaped metal strips 9, 10, Fig. 2, between which are housed guides 13, 14 for the windows 15. At the door joints a rubber strip 24, Fig. 7, of shape shown is secured to the body pillar 28 by a metal member 25 and the door pillar 27 when the door is shut makes intimate contact with the rubber member 24 as shown. At the hinge side the hinge and hinge bracket 34, 33, Fig. 8, are mounted in recesses in the respective pillars and rubber members 24, 35 are mounted as shown.
Patent GB-1491975-A (GB)
Title: Control arrangements for dc motors
IPC: H02P7/28
Filed: 1975-05-20
Abstract: 1491975 Control of D.C. motors NIPPONDENSO CO Ltd 20 May 1975 [21 May 1974 2 April 1975] 21568/75 Heading H2J A D.C. motor control system comprises a D.C. power source 1, a main thyristor 3 having a diode 4 connected in reverse parallel relation therewith, a commutation circuit 10 having a charge reversing circuit including a capacitor 5, a reactor 75 and a first unidirectional element 80 and a reverse biasing charging circuit including a second unidirectional element 6 connected across thyristor 3 through the capacitor 5, at least one of the unidirectional elements being a thyristor, a gate pulse control circuit 11 connected to thyristor 3 and thyristor 6 and/or 80, and a saturable transformer 70 having a primary winding 71 connected in series with the thyristor 3 and motor 2, a secondary winding 72 connected in series in the reverse biasing charging circuit and a core 73 having the primary and secondary winding wound thereon whereby current flows in each winding in such manner that the magnetic fluxes cancel each other and the core is saturated by a magnetic flux produced by current flowing in the primary winding 71, the transformer returning the current flowing in the main circuit 1, 2, 3 to the reverse biasing charging circuit for improving the commutation efficiency. In the operation of the system shown in Fig. 1, one of electromagnetic switches 210, 220 is operated and then thyristor 6 is turned on thus supplying the charging current of capacitor 5 until the capacitor is charged in the polarity shown. Thereafter, the thyristors 3 and 80 are turned on simultaneously so that current flows from the source to the motor 2 and at the same time the charge on capacitor 5 is reversed at the completion of which the thyristor 80 is turned off. In this condition the core 73 is saturated by the motor current I 0  flowing in primary winding 71. When thyristor 6 is again turned on, capacitor 5 is discharged through secondary winding 72, thyristor 6 and diode 4, the current i c  of capacitor 5 varying as shown in Fig. 2. The capacitor current is confined to the saturable transformer 70 during the reverse biasing time T off . The direction of excitation of the field winding 202 of the motor may be reversed during operation to brake the motor by changing the connections of switches 210, 220. During this plugging operation, as the primary winding 71 is connected in series with the field winding 202, and a diode 90 is connected across the armature 201, the current that flows through thyristor 3 is fed back to the commutating circuit and thus the charge on the capacitor 5 is effectively utilized this providing a plugging power control. A by-pass switch 13 is connected across the thyristor 3 and winding 71 and is closed when the conduction rate of thyristor 3 exceeds a predetermined value or the rotational speed of motor 2 exceeds a predetermined value. The system described with reference to Fig. 3 (not shown) is essentially the same as that shown in Fig. 1, the main difference being that the that the thyristor 80 is replaced by a diode (80a).
Patent GB-666772-A (GB)
Title: Improvements in or relating to timepieces
IPC: G04B1/22
Filed: 1948-08-16
Abstract: 666,772. Clocks and watches. ANDREWS, G. S. Aug. 16, 1948 [Aug. 28, 1947], No. 21573/48. Class 139. In a timepiece the curb pins are moved along an arc of the hairspring as the mainspring unwinds, which arc is adjustable in length. In one embodiment (Fig. 1) the curb pins 26 are carried by an arm 27 pivoted on the balance staff 22 and frictionally connected to one end of a lever 28, the other end of which is urged against a helical spring 34 rotated through gearing by the mainspring. The top end of the spring 34 is adjustable and as the arm 27 may be moved relatively to the lever 28 the length of the are of movement of the curb pins may be initially set. In another embodiment, not shown, a spiral spring is used in place of the helical spring. In another example (Fig. 7) the arm 78 carrying the curb pins 77, frictionally engages a lever 79 connected by a pin and slot connection to a lever 83 having a pin 82 constantly urged against a cam 81 driven from the mainspring. The pin 88 is adjustable along the slot 87 of the lever 83 for setting of the arc of movement of the curb pins. In another example (Fig. 9), the arm 104 carrying the curb pins 103 is frictionally connected to a lever 106 having an adjustable tip 107 urged against a gear wheel 110, which is moved vertically along a screwed shaft 109 as the mainspring unwinds. In another example (Fig. 10), not shown, a gear wheel movable along a screwed shaft as the mainspring unwinds carries a conical cam 129 which co-operates with a pivoted lever of adjustable length which lever moves the lever which is frictionally connected to the arm carrying the curb pins. In another example (Figs. 11 and 12), a spiral cam 146 rotated by the mainspring is vertically adjustable along a shaft 145 and moves a lever 150 frictionally connected to the arm 149 carrying the curb pins 148.
Patent GB-736382-A (GB)
Title: Improvements in and relating to rear-view devices
IPC: B32B15/08
Filed: 1953-08-06
Abstract: 736,382. Look-out reflectors for vehicles. REGIE NATIONALE DES USINES RENAULT. Aug. 6, 1953 [Nov. 27, 1952], No. 21768/53. Class 103 (2). In a rear view mirror for vehicles the backing for the reflecting layer and a part for mounting it on a fixing member are made of plastic material. The device, as shown, comprises a body 1 and a ball 2 moulded in one piece from plastic material, which is transparent or smoked. One side of the body is covered by a metallic deposition 3 preferably covered by varnish 4. The device can be turned in a socket to show to direct view the metallic side for use in driving by day or to show the metallic side through the plastic backing for use in night driving. In a modification the metal part consists of metal foil inserted in grooves on the plastic backing. In a modification the backing is opaque plastic material on which is applied a metallic coating or foil of which only one side acts as a reflecting surface. The socket may be constructed as described in Specification 718,968, [Group V].
Patent GB-907263-A (GB)
Title: New or improved screw fastening device
Inventor: DISLEY AUBREY
IPC: F16B37/04
Filed: 1959-06-25
Abstract: 907,263. Screw-sockets. GOODMAN Ltd., GEORGE. May 3, 1960 [June 25, 1959], No. 21796/59. Class 89 (1). A screw-socket comprises a synthetic resin, e.g. nylon, cylindrical sleeve 10 with a head 12 at one end, a part 15 of non-circular section adjacent the head and projections 16 extending from part 15 and spaced from the head. In use, the socket is pushed through a non-circular hole 13 in a member 14, or two or more members to be secured together, so that part 15 prevents the socket turning and the projections hold the socket in the hole. A screw is then engaged in bore 22 and tightened to expand the sleeve. The head 12 and part 15 may be of square cross-section.
Patent GB-1013132-A (GB)
Title: Fuel system for supplying gaseous fuel to a combustion chamber
Inventor: SAVILLE HAROLD
IPC: F02C9/32
Filed: 1962-06-06
Abstract: 1, 013, 132. Fluid-pressure servomotor systems. BRISTOL SIDDELEY ENGINES Ltd. May 14, 1963, [June 6, 1962] No. 21826/62. Heading G3P. Heading G3P. [Also in Division F1] A valve 2 controlling the supply of gaseous fuel to the combustion chamber of gas turbine plant is actuated through a rack and pinion 5, 4 by a servopiston 9 subject on an annular area to a loading pressure supplied through a conduit 8, 10, 88 from a pump 12 which pressure is opposed by pressure in a chamber 13, an inlet 16 to which is controlled by a valve 17 on an acceleration control arm 18 and an outlet 29 is controlled by a valve 30 on a governing control arm 31. The arm 18, which is pivoted at 55 and has an adjustable connection with an arm 19 pivoted at 57, as described in Specification 1,013,133, is acted on by a spring connected with the servopiston, an adjustable spring 25, a plunger 21 subject to the fuel pressure downstream of the valve 2, and a plunger 22 subject to compressor delivery pressure. Both valves 17, 30 have restricted leak paths when closed, and the arrangement is such that during acceleration the valve 30 is closed and the valve 17 controls the servopiston to relate fuel pressure to compressor delivery pressure, whilst at other times the valve 17 is fully open, with the arm 18 against a stop 26, and control of the servopiston is exercised by the valve 30, the arms 31, 32 of which are similar to the arms 18, 19 and are acted upon by an adjustable spring 47, a diaphragm 70 subject to a pressure controlled by a governor 36 driven by an independent power turbine, a plunger 39 subject to the fuel pressure downstream of the valve 2, and a plunger 43 subject to the fuel pressure modified by restrictions 40 and a gas capacity chamber 41 for reducing "speed droop" to a degree dependent upon the adjustment between the arms 31, 32. The relationship between fuel pressure and compressor delivery pressure during acceleration may be varied by modifying the compressor pressure signal by an atmospheric bleed valve 104 controlled by a linear actuator 51. The compressor pressure signal is also modified by an overspeed governor 52 driven by the compressor.
Patent GB-136311-A (GB)
Title: Improvements in Wind or Weather Screens for Motor-cycles.
Inventor: CAMPBELL ARCHIBALD GOWAN
IPC: B62J17/00
Filed: 1918-12-31
Abstract: 136,311. Campbell, A. G. Dec 31, 1918. Weaker-screens.-The screen a is pivoted on a rod c mounted across the handle-bars of a motorcycle. It is normally held in the position shown by the engagement of a notch at the end of a stay l, with a pin j carried by a fitting g on the handle-bar. The notch and pin are held in engagement by a spring h with sufficient force to withstand wind pressure and ordinary vibration; but the screen can be forced down by hand presssure to a lower position determined by a stop u and a second notch v. The stay comprises a rod d fitted with a spring-controlled plunger sliding in a tubular part l, to allow the screen to rock slightly about the rod c and thereby absorb road shocks or vibrations. The stay is secured to the screen by a flexible joint or hinge e. An adjustable upper screen o may be hinged to the main screen a, and a flap or apron s may extend downwards and be secured in position by a strap t.
Patent GB-218720-A (GB)
Abstract: 218,720. Hodson, J. Jan. 7, 1924. Refractory substances containing calcium and magnesium oxides.-Natural calcium and magnesium carbonate rocks such as dolomites and magnesites, or the products obtained by incinerating them, are mixed with materials for preventing hydration and burned at 1550-1800‹ C. to produce a plastic mass; after cooling the mass is broken up or ground, moistened with water or a binding liquid, moulded, and fired at 1400-1500‹ C. Part of the mass may be ground to a finer state than the remainder. The materials for preventing hydration may be clay, shale, slate, magnesium silicates (e.g. steatite), silica sand, igneous rocks such as dolerite, peridotite, and eurite, or mixtures of these substances. Silicate of soda may be used as the binding- agent. Specifications 131/79, 4807/79, [both in Class 70, India-rubber &c.], 4384/81, 14981/10, 110,147, and 211,944 are referred to.
Patent GB-479074-A (GB)
Title: Improvements in or relating to floor grinding machines
IPC: B24B47/10
Filed: 1936-08-08
Abstract: 479,074. Grinding-machines. LUKE & SPENCER, Ltd., and RENNISON, F. A. Aug. 8, 1936, Nos. 21877/36 and 7617/37. [Class 60] In a grinding-machine having two grinding- wheels c each provided with a work-rest l, the wheels are driven from a single motor g, but each wheel is carried by its own shaft a and is driven through change-speed gearing comprising stepped pulleys and belts h, and a speeddiameter limiting device is provided for each wheel. The motor is mounted on a platform pivoted to the machine frame and adjustable, to adjust the belt tension, by bolts g<2>, and associated with the belts for each wheel is a belt-fork, comprising rods carried by a sleeve j<1> slidable on a rod s in the frame. Each work-rest l is slidably adjustable to and from the wheel o by a bolt o movable in a slot in a vertically adjustable bracket m. the bolt being pivoted to a rod q carrying a plate r resting on the sleeve j<1> and provided with a stepped slot or gate r<1>, the slot being engaged by a square lug j<2> on the sleeve j<1>; the rest l thus may be adjusted until the end of a slot in the plate r engages the lug, when, in order to permit of further adjustment the sleeve j<1> and the belts h must be moved to carry the belts onto the next step of the pulleys. In a modification, a stud carried by a lever engages the gate, the lever being connected to the sleeve j<1> by a link. Instead of each wheel c being on a separate shaft, the two wheels may be mounted rotatably on a single shaft. A wheel guard x connected at y to an exhaust conduit is provided.
Patent GB-1273341-A (GB)
Title: Improvements in sound wave radiator devices
IPC: G10K13/00
Filed: 1960-06-22
Abstract: 1,273,341. Diaphragm vibrators. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. 22 June, 1960 [20 July, 1959], No. 21936/60. Heading G5J. A sound radiator comprises a rectangular strip 3 whose thickness is small compared with the wavelength in the surrounding medium of the radiated sound and which is fastened along two opposite edges to two identical parallel bars 1, 2, the bars being subjected to torsional oscillations of opposite phase. The bars may be coated with acoustic insulation.
Patent GB-736742-A (GB)
Title: Detector-amplifier system for uni-directional potentials
IPC: G05D3/14
Filed: 1953-08-11
Abstract: 736,742. Phase-sense sensitive circuits. BRISTOL CO. Aug. 11, 1953 [Aug. 21, 1952], No. 22118/53. Class 38 (4). [Also in Group XL (c)] In a control system of the type in which a D.C. input signal of variable amplitude and reversible polarity is modulated by an electromagnetic reversing switch to an A.C. signal of correspondingly variable amplitude and reversible phase, the A.C. signal is amplified in a frequency-selective amplifier to eliminate unwanted harmonics. The D.C. signal is applied at 10 to a reversing switch A as disclosed in Specification 703,772, the A.C. output appearing at the secondary of transformer B, tuned by capacitor 24 to the fundamental frequency of the A.C. signal. The signal is amplified at C, passed through low-pass filter D (to reduce the higher harmonics) to amplifier E, passed through a parallel-T filter F (arranged to sharply reject the second harmonic) to amplifier H, passed through a further low-pass filter J to amplifier K and so to a power amplifier L and one phase of a reversible 2-phase servomotor M. The filter F may be replaced by a "shunt M- derived low-pass filter," Fig. 2 (not shown), or by a " constant-K band-stop filter," Fig. 3 (not shown). Specification 686,890, [Group XXXVI], also is referred to.
Patent GB-387679-A (GB)
Title: Improvements in or relating to time-displacement recording apparatus
IPC: G01P1/12
Filed: 1931-08-05
Abstract: 387,679. Time-displacement recording and displacement-registering apparatus. KOLFF, P. VAN S., Broad Street, Philadelphia, U.S.A. Aug. 5, 1931, No. 22197. [Classes 106 (i), 106 (iii), and 106 (iv).] Apparatus for recording distance against time is fitted with three styles to move transversely to the record strip at rates in the ratio of units, tens, and hundreds under the control of the corresponding elements of an odometer. The counter wheels are driven by the vehicle and the strip by a clock or vice versa. The numeral drums 33, 42, 48 have spiral grooves to operate the styles 20, 24, 25 for units, tens, and hundreds, respectively through rolls 34, return grooves between the turns of the spiral being axial in direction, and the styles being pivoted on a block 19 rocking on trunnions 18 under spring control and being biased towards the right as shown in Fig. 1 by blade springs 27. Styles of copper, copper alloy, or silver to scrape the paper surface are employed for recording. The units cam pinion 39 drives through pinions 38, 40 on a countershaft 36, the pinion 41 of the tens wheel and cam, and the latter drives the hundreds member by like gearing. The gearing 39, 38 is of the move and lock type shown in Fig. 4 with five dwells, gears 40, 41 being in ratio 1 : 2. The record strip is in three columns as shown in Fig. 1 with interspaced holes to engage sprocket wheels on a clock-driven axle 4 the supply and take-up roll having spindles bearing in slots 13 and having friction gear wheels 16, 17. The recording-apparatus may be applied in meters, machines, and generally.