baber/WOPTO huggingface dataset:
Patent GB-493289-A (GB)
Title: Improvements in and relating to thermionic valve amplifiers
IPC: H03G7/02
Filed: 1937-04-02
Abstract: 493,289. Automatic volume control; valve amplifying circuits ; television. PHILCO RADIO & TELEVISION CORPORATION. April 2, 1937, No. 9419. Convention date, May 14, 1936. [Class 40 (iv)] [Also in Group XL] The gain of a signal amplifier is controlled by a further signal which is prevented from appearing in the output of the amplifier. The signal E1 to be amplified is applied to valve V1 biassed over resistance R by battery C which also biasses valve V2, the grid of this valve being, as shown, unaffected by the signals, although in a modification the signal E1 is applied to V1, V2 in push-pull. The control signal E2 is applied to valve V4 and all three valves have a common cathode resistance R1, the voltage across which tends to follow control voltage E2. The voltage across R1 is in effect applied to the input circuits of V1 and V2 and controls their mutual conductance, the output of V1 being applied to a further valve V3 so that the output across resistance R3 due to the control signal component is in phase opposition to the output of V2 which consists solely of the control signal. It is arranged that the total amplification of V1, V3 is equal to that of V2. The amplifier, by virtue of the resistance - capacity couplings, gives substantially uniform amplification over a wide band of frequencies but to extend the frequency range upwards for use as a television amplifier, the effect of the capacities to earth of the coupling condensers and the inter-electrode capacities may be compensated by small inductances L, L1 in branch V1, V3, a further inductance L2 being inserted in branch V2 to balance the branches, account being taken also of the inductance of the connecting wires. The amplifier is applicable for correcting the " keystone " effect in television by making the amplification of horizontal scanning signals dependent on voltages derived from the vertical scanning signals. In the above - described arrangement, the valves V1, V2 are unequally loaded. It is desirable that appreciable and equal loads should be provided in order that the voltage across resistance R1 may be substantially independent of valves V1, V2, and a circuit for effecting this is described with reference to Fig. 4 (not shown) which is identical with an arrangement described in Specification 493,341, [Group XL].
Patent GB-625782-A (GB)
Title: Improvements relating to fluid control valves
IPC: F16K31/56
Filed: 1947-04-09
Abstract: 625,782. Manually-actuated valves. HOWDEN & CO., Ltd., J., and NELSON, W. April 9, 1947, No. 9458. [Class 135] A fluid-control valve is provided with emergency opening means operable from a distance. The threaded part of the valveoperating rod 1 mates with a threaded hole in a crosshead 4 which slides on bars 5 mounted on the valve body 3 and connected by a cross-bar 6 at their upper ends. Parallel links 8 are pivoted to the cross-bar and to an actuating rod 10. The cross-head is urged by springs 7 against the links, which may have rollers at their ends. According to the Provisional Specification, an operating link or lanyard may be connected to the'rod 10.
Patent GB-950706-A (GB)
Title: Improvements in thermionic valves
IPC: H01J21/36
Filed: 1962-03-13
Abstract: 950,706. Thermionic valves. SIEMENS & HALSKE A.G. March 13, 1962 [March 15, 1961 (2)], No. 9535/62. Heading H1D. A multi-grid valve for amplifying widefrequency bands having an indirectly heated cathode 1 and a control grid 2 wound on a frame and held in tension, has the cathodecontrol grid spacing less than 60Á, the control grid 2-screen grid 3 spacing less than 400Á, the screen grid 3-anode 5 spacing less than 4 mms., the active cathode area not less than 0.45 cm.<SP>2</SP> and the control grid wound from wire having a diameter of less than 8Á and having a pitch substantially equal to the control grid-cathode spacing. The valve may be either a tetrode or a pentode, the cathode may be of the metal capillary type with a porous tungsten surface surrounding barium oxide and in a preferred embodiment, the cathode-control grid spacing is between 30 and 40Á, the diameter of the control grid wire is 6Á, its pitch being 40Á, and the diameter of the screen grid wire is 6Á and its pitch is 0.375 mm. Theory of the operation of the valve is given.
Patent GB-496753-A (GB)
Title: Improvements in chain type delivery devices for sheet printing machines
IPC: B65H29/04
Filed: 1937-04-05
Abstract: 496,753. Sheet delivery apparatus. DRESDEN - LEIPZIGER SCHNELLPRESSEN FABRIK AKT.-GES., and LANG, K. T. April 5, 1937, No. 9591. [Class 100 (i)] In a sheet-delivery apparatus for printing- machines of the kind employing endless gripperchains, the last gripper-chain 11, Fig. 2, can be arranged to take sheets 1 either directly from the preceding chain 2 or indirectly through an interposed gripper-device 9 whereby the sheets are delivered to the pile 18 with either side up as required. For this purpose, each gripper on the chain 11 has two sets of jaws 15, 16 for co-operating with the grippers 10, 3 on the chain 2 and the interposed grippercylinder 9 respectively, and the driving-gear 17 of the chain 11 is mounted on its shaft 14 by an eccentric bushing whereby it can be brought into mesh either with the gear 6 of the chain 2 or the gear 8 of the cylinder 9. A cross-slide coupling is provided between the gear 17 and the sprocket 12 of the chain 11. The gear 8 meshes with the gear 6 and can be connected to the shaft 7 of the cylinder 9 by a coupling K, Fig. 5. A proof sheet may be delivered to a table 30, Fig. 3, by moving the coupling K in the reverse direction. A mutilated gear 8<1> is connected thereby to the shaft 7, and at the same time, a similar gear 6<1>, keyed on the shaft 4 of the gear 6, is moved into alignment therewith, with the non- toothed parts in register. A cam groove 26 on the gear 6<1> engages a pin 28 on a lever 27 so as to oscillate the lever, which by means of a forked end engaging a pin 25 on the gear 81 brings the toothed parts into engagement and causes the cylinder 9 to be given one revolution. The members K, 6<1> are retracted automatically at the end of the revolution.
Patent GB-1171554-A (GB)
Title: Improvements in or relating to Miniature Electrical Devices
Inventor: CARTWRIGHT JOHN ANTHONY
IPC: H01C1/14
Filed: 1967-03-01
Abstract: 1,171,554. Variable resistors. PAINTON & CO. Ltd. 29 May, 1968 [1 March, 1967], No. 9649/67. Heading H1S. Connection to a resistive track in the form of a fused film on a refractory substrate 28 is made by precious metal members 29 passing through the substrate with a short projection which is joined to a lead 36 of non-precious metal, the joints being protected by the cover 30 of the resistor as by location in the bore 31 filled with material 37. The joints may be made by welding, soldering, brazing or clenching. In the form shown a metal plate 24 is carried on a rotatable member 42 and is formed with contact fingers which bear on the resistive track and another which bears at the centre of the substrate on a contact which is also connected by a precious metal member to an external lead. The member 42 is driven from the member 48 through a slipping clutch comprising a transverse resilient pin 54 engaging, at its ends, notches in a rim formed on the face of the member 42. The member 48 is driven from the head 4 by reduction gearing comprising a ring of teeth 44 carried on a stationary member 41 and of teeth 46, slightly different in number, carried on the member 48. A projection 40 on the head 4 presses the teeth into engagement at one point on the circumference. As this point is moved round the circumference there is a slow relative rotation of the members 44, 48. In another embodiment the rotary contact member is driven from the head 4 directly through a slipping clutch. The precious metal members 29 may be of platinum alloy. The resistive track may be of powdered palladium and silver fused in a low melting point glass.
Patent GB-940508-A (GB)
Title: Doppler radio navigation system
IPC: H01Q3/24
Filed: 1960-03-18
Abstract: 940,508. Radio navigation. STANDARD TELEPHONES & CABLES Ltd. March 18, 1960 [March 28, 1959], No. 9665/60. Heading H4D. Relates to means for reducing distortion in a Doppler-type radio beacon or direction - finder comprising means for actually or effectively rotating a pair of spaced aerials about a fixed aerial located midway between the spaced aerials such that the signal transmitted or received is frequency modulated at the rotation frequency, the phase of the modulation as indicated by comparison with a reference signal synchronized with the rotation being dependent on the direction of transmission or reception. As described, the effective rotation is produced as in the parent Specification by sequentially connecting the aerials of a circular array 2 to the transmitter or receiver by means of a rotating switch S driven by a motor M such that two diametrically opposite aerials are switched in simultaneously. According to the present invention as applied to a beacon, 95.5% of the output from a transmitter 1 of frequency F is amplitude modulated at 4 with a 30 c/s. reference signal from a generator T driven by the motor M and applied to the central aerial 3 and 4.5% of the transmitter output is applied together with the output from a 9960 c/s. generator G to a balanced modulator 5 to produce signals F+ 9960 c/s. and F - 9960 c/s. which are applied respectively to the opposite rotor elements B of the rotating switch S. The mobile receiver may be a conventional VOR beacon receiver as described in the parent Specification. For a direction-finder, Fig. 2 (not shown), utilizing the above aerial arrangement, when a signal of frequency F is received, the signals from the two opposite rotor elements are applied together with a 10 kc./s. signal to a balanced modulator similar to the modulator 5 to give signals F+10 kc./s. and F - 10 kc./s. which are combined with the signal from the central aerial and applied to an amplitude detector giving a 10 kc./s. signal frequency modulated with the 30 c/s. direction-dependent signal which is extracted by a frequency discriminator and applied to a phase meter together with phasequadrature 30 c/s. reference signals from a generator synchronized with the switch.
Patent GB-1184424-A (GB)
Title: Alkylated Bis(phenols)
Inventor: ENSOR GORDON ROY
IPC: C07C37/14
Filed: 1967-03-01
Abstract: 1,184,424. Alkylated bisphenols. MONSANTO CHEMICALS Ltd. 14 Feb., 1968 [1 March, 1967], No. 9672/67. Heading C2C. Alkylidene bis(phenols) having at least one unsubstituted -o or -p position to a phenolic -OH group, and free from tert-alkyl groups in such -o or -p positions are alkylated in the presence of an alkylating agent and aqueous H 2 SO 4  (having at least 50% H 2 SO 4  by wt.). The major component in the product obtained is the mono-alkylated derivative. The alkylating agent may be isobutylene,2-methylbutene-1 1 or 2- methylbutene-2. The preferred molar ratio of alkylating agent to the bisphenol is from 1 to 3À5.
Patent GB-286902-A (GB)
Title: Improvements in steam boilers
IPC: F22B21/22
Filed: 1927-04-08
Abstract: 286,902. Fairweather, H. G. C., (steam Production Corporation). April 8, 1927. Water-tube boilers ; drums. - A water-tube boiler intended particularly for use on motor cars comprises a water drum 13 and a steam drum 12 connected by generating tubes 22 discharging tangentially into the steam drum, and by downcomer tubes 14. Steam is withdrawn from the steam drum through a central pipe 27. Each generating tube is helically coiled, the convolutions of a coil being inclined upwardly and of increasing diameter from bottom to top. The hot gases pass through smoke tubes 12 in the steam drum and escape through a flue 26. The valve 32 controlling the discharge of steam is fitted between a primary superheating coil 30 beneath the steam drum and a secondary superheating coil 31 inside the annular water drum. The water drum consists of two annular pipes welded together and interconnected by short tubes 18. Feedwater is heated in a coil 19 shielding the downcomer tubes. Valves 29 at the bottom of the downcomer tube prevent a reversal of the water circulation. The burner 21 may be of the kind described in Specification 275,177, [Class 51 (i), Furnaces and kilns, Combustion apparatus of].
Patent GB-165947-A (GB)
Title: Improved step-by-step mechanism for electric motor starters
IPC: H02P1/06
Filed: 1920-04-07
Abstract: 165,947. Railing, A. H., Garrard, C. C., and Wilson, W. April 7, 1920. Addition to 139,889. Controllers, actuating-mechanism for.-The invention described in the parent Specification, which consists in a motor-starter step-by-step mechanism, is modified by mounting the escapement lever E on a fixed pivot 1, and the peg orpegs A<1> upon the movable member of the starter. The action of the starter in turning clockwise is that the peg encounters and deflects the forward pallet E<1> and then jams against the back pallet E<2>, which is provided with a lip, until the handle pressure is relaxed, when the spring F returns the escapement lever to its original position and leavesthe peg free to move on.
Patent GB-1533141-A (GB)
Title: Ignition distributor for internal combustion engines
IPC: F02P7/10
Filed: 1976-03-11
Abstract: 1533141 Bearings ROBERT BOSCH GmbH 11 March 1976 [13 March 1975] 9711/76 Heading F2A [Also in Division H1] In a rotary ignition distributor for an internal combustion engine the shaft 16, Fig. 1, is supported between a pair of combined axial/radial ball bearings 23 with the inner races 25 mounted on the shaft 16 and the outer races 34 radially supported in bores 17 of the housing 10 and having outwardly directed flanges 35 in abutment with end faces 12, 13 of the housing 10. A sealing ring 36 may be arranged in the bore 17 between the bearings. In a modification the bearings may be received in recesses (42) Fig. 2 (not shown) at the ends of the housing 10 with the flanges (25) engaging the end faces of the housing at the edge of the recesses.
Patent GB-1033323-A (GB)
Title: Manipulator for rolled stock
Inventor: ZAJATS IOSIF LVOVICH
IPC: B21B39/24
Filed: 1964-03-09
Abstract: 1,033,323. Manipulators. ELEKTROSTALSKY ORDENA LENINA ZAVOD TJAZHELOGO MASHINOSTROENIA. March 9, 1964, No. 9782/64. Heading B3M. A manipulator for rolled stock comprises a pair of rollers 2 between which stock 3 is gripped and rotated. Each roller is formed from a number of discs (Fig. 3, not shown) offset from one another by a distance equal to their thickness so that, on rotation of the rollers about their supporting shafts 1, the stock is rotated through 90 degrees. The housings 8 of the shafts can be moved apart to the dotted positions in Fig. 1 by an actuating rod 9 and link 10.
Patent GB-778557-A (GB)
Title: Improved liquid cooled friction brake and brake system including same
IPC: F16D65/853
Filed: 1956-03-29
Abstract: 778,557. Motor vehicles. GENERAL MOTORS CORPORATION. March 29, 1956 [April 28, 1955], No. 9795/56. Class 79(3). [Also in Group XXXIV] A liquid cooled friction brake for motor vehicles includes, in each wheel axle mounting assembly, engageable stationary and rotatable brake members 62, 63, through which a cooling liquid is circulated by a pump, Fig. 5, the pump being operated only when the brake is applied by the frictional clamping of disc member 100 against the annular wall 70 so that by rotation of the pump rotor 75 cooling fluid is forced by the valve out through ports 90 and 91 and past the interengaging friction members. The liquid thus passes through slots in the wall 70 into the annular space 61 and thence by the discharge passage 99 to the conduit 16. Cooling fluid is supplied to the brake through conduit 22 from a header tank on the vehicle supplying the pumps on all four wheels, the return flow conduits including a heat exchanger, which as shown in Fig. 12, may be disposed in the lower collecting chamber of the conventional engine radiator 20, the conduit 123 leading from a master cylinder or other actuator unit to a pair of piston and cylinder units by which the interengaging friction plates are forced together.
Patent GB-741154-A (GB)
Title: Arrangement for amplifying the light intensity of an optically projected image
IPC: G02B27/54
Filed: 1953-04-10
Abstract: 741,154. Semi-conductor devices. GES. ZUR FORDERUNG DER FORSCHUNG AN DER EIDGEN TECHNISCHEN HOCHSCHULE. April 10, 1953 [April 16, 1952], No. 9866/53. Class 37. [Also in Groups XX and XL (b)] In an arrangement for increasing the light intensity of an optically-projected image in which the deformation of a control layer included in an optical system modulates the light of a separate light source, the control layer includes a combination of a light-sensitive layer and a deformable layer with a mirror layer. The incident light is effective to vary the resistance or dielectric constant of the lightsensitive layer so that with a D.C. or A.C. biasing voltage applied to suitable electrodes, the deformed layer varies the amount of light reflected from the separate light-source via the mirror layer. In one form of control layer, Fig. 1, a glass carrier 1 has a transparent electrode 2 with a layer of light-sensitive material, such as selenium or copper-activated zinc sulphide. The deformable layer 4, which may be .formed of a high polymer such as polyvinylchloride with a plasticizer, carries a covering 5 forming a mirror and a second electrode. The layer 4 may be opaque. In a modified combination, Fig. 2, a separate glass carrier 6 supports the deformable layer 4 and the metallic mirror 5, the elements carried by the carrier 6 being separated from the composite layer on the carrier 1 by a medium 7 of suitable conductivity, dielectric constant and internal friction, such as ionized air or benzene plus an electrolyte. Specifications 543,485 and 561,926, [both in Group XL], are referred to.
Patent GB-142642-A (GB)
Title: Improvements in or relating to calendering mechanism
IPC: D06C15/00
Filed: 1919-04-22
Abstract: 142,642. Hunt, G., and Campion, C. W. April 22, 1919. Calendering. - Relates to calendering-mechanism for use in connexion with means for stretching and finishing tubularfabrics, and consists in the provision, in addition to a main roll, of a vertically adjustable roll disposed above the main roll, and of a third roll disposed beside and movable to and from the second roll, spring-compressing screws being used with the adjustable rolls and utilized for withdrawing these rolls. The main roll A is mounted in standards B and driven by reducing-gear from a shaft C. The second roll F is mounted in bearings G sliding in guideways B', and is held down by springs H adjustable by nuts J<1> on screws J mounted in brackets B<2> and connected to a shaft K operated from a wheel M or a handle. To separate the rolls, the nuts J<1> carry hooks N engaging the roll journals, and by continuing the movement of the nuts after the pressure is removed, the rolls are separated. The bearings of the third roll 0 are mounted in inclined guideways Q, and the roll is similarly controlled by screws S, nuts S', and hooks T. The fabric,-as it leaves the stretching- device, passes between the rolls A, F and then up between the rolls F, 0, from which it is carried to a folding-mechanism by usual constructions, the swinging frame of which may be driven from the gear-wheel E.
Patent GB-963630-A (GB)
Title: A device for moving the sections of a sectioned member such as a map picture or the like in a viewing field
IPC: G09F11/29
Filed: 1963-03-13
Abstract: 963,630. Maps. J. HUTTERER. March 13, 1963 [March 22, 1962], No. 9937/63. Heading G5G. A device for moving successive sections of a dissected map in strip form 4, Fig. 1 into the viewing field 2 of a casing 1 comprises two spools 3 rotatably mounted on spindles 6 at opposite ends of the viewing field the spools being interconnected by cords 24, to which a manually operable slide 25, Fig. 2, is attached and movable in a slot of the casing between the spools to rotate the latter. To rotate the spools in the direction of the arrow A an upper handle 17 of a sleeve 8, carrying freely supported cord roller 9, is turned clockwise, whereby the said sleeve is moved in the direction of its associated spool 3, causing the ratchet teeth 13 on the cord roller 9 to engage with ratchet teeth 14 on the spool 3. On movement of the side 25 in the direction of the arrow A both cord rollers 9 will rotate counter-clockwise. When the slide 25 is returned the teeth 13 of the roller 9 will pass over teeth 14, and the roller pressed into engagement with the spool by a spring 11. During the latter movement of the teeth 13, 14 a braking spring 19 prevents the spindle 6 and its concomitant spool from rotating clockwise, by a coupling element 7 on the spindle, having teeth 21 engaging the teeth 23 provided on the nearside of the cavity 22 at one end of the spool. Movement of the map in the opposite direction is effected by rotating the upper handle 17 counter-clockwise to disengage the upper cord roller 9 and the lower handle 17 clockwise, whereby the lower cord roller 9 is coupled with its associated spool. The spools 3 may also be rotated by the handles 18 which are shifted axially to thereby displace the corresponding spindles so that their teeth 23 engage with teeth 21 of the spools.
Patent GB-845849-A (GB)
Title: Apparatus for producing a uniform bat of fibrous material
IPC: D01G25/00
Filed: 1959-03-23
Abstract: 845,849. Feeding fibrous materials. FLEISSNER, J. E., FLEISSNER, H., and FLEISSNER G., [trading as FLEISSNER & SOHN MASCHINENFABRIK] March 23, 1959 [March 21, 1958], No. 9997/59. Addition to 838,649. Class 120(1). The apparatus described in the parent Specification is modified in that needle drum 15 is mounted so closely to suction drum 10 and conveyer 11 that the suction from drum 10 is effective in the gap 24 between drum 15 and conveyer 11 to draw material into that gap and upon and between the needles of drum 15. It is then unnecessary to provide suction within drum 15. The needle roller 19 for stripping drum 15 is also so close to drum 10 that the suction acts in the gap 22 between roller 19 and drum 15 to remove the fibrous material.
Patent HK-139296-A (HK)
Title: Network clock synchronisation
Inventor: BALLANCE JOHN WILLIAM
IPC: H04B10/272
Filed: 1996-07-25
Abstract: In a network including an exchange 1 having a masterclock 5 and a number of subscriber stations 3 connected to the exchange, the exchange 1 includes a delay line 7 which receives incoming data. Samples are taken from different taps of the delay line 7 and the tap carrying data in phase with the masterclock 5 identified and used to output data. In a preferred example the network is an optical network carrying data cells.
Patent HK-183996-A (HK)
Title: Signal level adjustment circuit arrangement
Inventor: THANHEISER WILHELM
IPC: H03G1/04
Filed: 1996-10-03
Abstract: In the adjustment, particularly the step-by-step adjustment of the volume of audio signals, audible and thus interfering clicking noises are produced due to the abrupt change in the signal variation when C-MOS switches are used. This interference is suppressed by the fact that, by the beginning of each step-by-step level change, a signal jump of the same magnitude is generated in the opposite direction which initially compensates for the signal jump. After a predeterminable time constant has elapsed, this compensation is cancelled again in a continuously decreasing manner until a new level jump arrives. Control of the volume of audio signals. <IMAGE>
Patent HU-T46849-A (HU)
Title: Process for producing stabilized composition
Inventor: DUBOVSZKY ISTVAN
IPC: A61K31/375
Filed: 1987-04-29
Abstract: Vitamin C can be stabilised when 1-5 pts. wt. of solid ascorbic acid are mixed with 0.1-5 pts. wt. of a solids contg. pref. alcoholic, extract of propolis. The prepn. also contains tabletting additives in order that the prepn. should be tabletted.