baber/WOPTO huggingface dataset:
Patent GB-719476-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
Inventor: CLAYDEN RONALD THOMAS
IPC: H03F1/36
Filed: 1952-01-31
Abstract: 719,476. Valve amplifying circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Feb. 2, 1953 [Jan. 31, 1952], No. 2580/52. Addition to 630,132. Class 40 (6). [Also in Group XXXVI] The parent Specification describes, with .reference to Fig. 3 of the drawings, an amplifier in which an input resistor of high value is used and its effective value reduced by means of negative feedback. To compensate for the self-capacity of the resistor an additional feedback is applied to a tapping point on the resistor, via a condenser connected to a potentiometer across the feedback path. The present invention relates to a method of setting up or testing the frequency response of such a circuit, and consists in applying the test signals to opposite ends of the condenser referred to, in equal amplitude. The test signals are applied to the condenser, C1, present Fig. 2, via line 2, resistor R7 of low value, and coupling resistors R5, 6. The addition of the resistors R5, 6, 7 to the circuit necessitates modification of the values assigned to the feedback resistors R1, 2<SP>1</SP>, 3<SP>1</SP>, 4 and the Specification gives expressions from which the modified values may be determined.
Patent GB-1109571-A (GB)
Title: Improvements relating to suspended ceilings
Inventor: WHITEHOUSE NORMAN
IPC: E04B9/10
Filed: 1965-01-21
Abstract: 1,109,571. Suspended ceilings. GEO. WHITEHOUSE & CO. (BIRMINGHAM) Ltd. 21 Jan., 1966 [21 Jan., 1965], No. 2631/65. Heading E1W. In a suspended ceiling, longitudinal framing members 11 and transverse framing members 12 are secured together in alignment by pressstud fasteners 13, the complementary parts 16, 21 of which are secured to the end portions of the respective framing members. The fastener parts 16 are inserted in holes in the framing members whilst the fastener parts 21 are slidably mounted in slots 19, 25, which permits relative sliding movement between the ends of the framing members if expansion of the framing members occurs. When expansion occurs, the flanges 7 of respective aligned' interconnected framing members 11 are moved out of abutting alignment by a camming action between inclined end portions 20 of the slots 19 and the fastener parts 21 whilst the flanges 7 of transverse framing members 12 are lifted in relation to the flanges 7 of the members 11 by camming action between camming edges 29 and the bottom edges of apertures 26.
Patent GB-787219-A (GB)
Title: Improvements in adjustable supporting brackets
IPC: A47B57/42
Filed: 1956-01-27
Abstract: 787,219. Brackets. ENCON (PROPRIETARY). Ltd. Jan. 27, 1956 [Feb. 21, 1955], No. 2802/56. Class 52(5) A bracket comprises a channel shaped support 1 having along its length inner and outer sets of rungs 7 and 8, respectively bridging the channel, and a bracket arm 2 preferably channel shaped and with an upturned flange 6 at the inner end engaging under one of the inner rungs 7 while the lower edge of the arm 2 rests on one of the outer rungs 8.
Patent GB-984022-A (GB)
Title: D-homoandrost-9(11)-ene-18-nitrile derivatives and their preparation
IPC: C07C62/26
Filed: 1962-07-18
Abstract: The invention comprises a compound having the formula <FORM:0984022/C2/1> wherein R is a hydrogen atom or an alkanoyl group having not more than 8 carbon atoms, R1 is an oxo group or an alkylene-dioxy group having 2 or 3 carbon atoms and the ripple mark (#x) represents a generic indication of both a - and b -configurations. These compounds are obtained by subjecting a D-homo-androsta-9(11), 13(17a ) - diene derivative having the formula <FORM:0984022/C2/2> wherein R is as defined above, to cyanation, if necessary followed by ketalization.  Specifications 873,019 and 915,892 also are referred to.
Patent GB-643996-A (GB)
Title: Improvements in and relating to the speed control of asynchronous electric machines
Filed: 1947-01-30
Abstract: 643,996. Automatic speed control systems. MUIRHEAD & CO., Ltd., MUIRHEAD, F. H., and BELL, J. Jan. 30, 1947, No. 2881. [Class 38 (iv)] In a speed control system for an asyn.- chronous electric machine, the output of a tachometer alternator is applied together with a standard frequency to a diode circuit the out. put of which controls a triode correcting speed by acting as a variable load on a D.C. generator mechanically coupled to the machine. In Fig. 1, to control the speed of a commutator motor 2 supplied from A.C. mains 1, the output of a tachometer alternator 4 is applied, together with a standard frequency supply from an electrically maintained tuning fork 9, to a, thermionic valve circuit 6 comprising, as shown in Fig. 3, a diode mixer, to which the two frequencies are applied, controlling a triode, the anode-cathode circuit of which is connected across the output terminals of a D.C. generator 3 coupled to the motor shaft. After initial adjustment of motor speed, deviations from synchronism result in a change of output from the diode mixer to vary the load imposed by the triode on the D.C. generator thereby correcting motor speed. In modifications of the thermionic valve circuit a phase-advancing circuit is included between the diode and triode and a further triode serves to amplify the inputs to the diode. The motor and D.C. generator may be combined in the form of a doublewound rotary converter or the motor, alternator and D.C. generator rotors may be mounted in a unitary structure. A damping flywheel may be resiliently coupled to the common shaft.
Patent GB-639172-A (GB)
Title: Electric heating apparatus for kitchen use
IPC: A47J37/10
Filed: 1948-01-30
Abstract: 639,172. Electric cookers. KAYSER, H. Jan. 30, 1948, No. 2899. Convention date, Feb. 4, 1947. [Class 39 (iii)] An electric cooker for food comprises a flat, heatconductive pan 16 for the food, and a lid having a heating unit 1 adapted to radiate heat into the pan 16, the lid having a heat-radiating and conducting lower surface 2, and making heat-conducting connection with the pan 16. A metal plate 4 is secured to the heating unit 1 by a screw 3, a cover 6 enclosing the whole. A rest 11 having a plate 12 and cooling holes 14 is fixed to the top of the lid, to enable it tc be inverted and used alone as a hot plate.
Patent GB-212702-A (GB)
Title: Device for testing ignition and lighting circuits of motor vehicles
IPC: G01R31/00
Filed: 1923-01-31
Abstract: 212,702. Owen, D. J. Jan, 31, 1923. Cases.-A box 1 contains a battery situated beneath a plate 3, spark-gap terminals 6, 7, and a compartment into which a Ford car or like induction coil 5 to be tested is arranged to slide so that the contacts thereon co-operate with spring or other contact in the box. The lid 2 of the box 1 carries a holder 8 for a lamp 9, the circuit of which is completed through terminals. 10, 11 and co-operating pairs of studs on the box 1 and lid 2, which make contact when the lid is in the open position shown. The lamp 9 is placed in circuit with the battery on closing the switch 4.
Patent GB-818590-A (GB)
Title: Improvements in or relating to gramophone record players
IPC: F16H15/46
Filed: 1956-01-31
Abstract: 818,590. Change-speed gear. TELEFUNKEN G.m.b.H. Jan. 31, 1956 [Jan. 31., 1955], No. 3002/56. Class 80 (2). [Also in Group XXXVIII] In a record-player having means for selecting the turntable speed and simultaneously moving an appropriate needle into position, means are provided for moving the selecting mechanism to inoperative position after a record has been played so that the mechanism must be operated before another record. can be played. Pushbutton control may be provided, the pushbuttons being coupled to switching means for a motor so that when a button is operated the motor is switch on and when the motor is switched off the button is returned to its inoperative position. As shown, each button 1, Fig. 1, is carried by a lever 2 pivoted at 6 and adapted to rock a lever 7 to release a motor switch 13 and raise a rod 15 to engage a friction wheel 21 ,with one of a number of wheels on a turntable drive-shaft 22. When the button 1 is depressed a pawl 4 is pushed to one side and acts as a retainer, and when the gramophone needle passes through a run-out spiral a rod 5 is moved to the right to release the pawl to allow the button to return to normal position, the lever 7 switches off the motor and the rod 15 is depressed by a spring 18 and the speed gear returns to neutral position. A lever 8 attached to the pawl 4 is moved to the right as the pushbutton is operated and by means of slot engaging a pin 17 on the rod 15 rotates the rod to turn an arm 19 connected to an arm 20 carrying the wheel 21 which moves into engagement with the shaft 20 and the turntable.. When the rod 15 descends the pin 17 is returned to normal position by an incline 16.
Patent GB-469814-A (GB)
Title: Improvements in selecting and isolating switches, particularly for ring main connections
IPC: H01H31/02
Filed: 1936-01-31
Abstract: 469,814. Switchgear structures. BRITISH THOMSON-HOUSTON CO., Ltd., and JEFFS, W. V. Jan. 31, 1936, No. 3011. [Class 38 (v)] A selecting or isolating switch, particularly for use in ring main connections, comprises for each phase three insulated conductors 2, 3, 4, each conductor having pivotally mounted at or near one end thereof a switch blade 6 capable of being moved into engagement with a contact 7 associated with one of the adjacent conductors. The switch enables three circuits to be interconnected, to be connected selectively in pairs, or to be isolated from one another. In the construction shown, the contact members are immersed in oil in a tank 1, from the walls of which the conductors are supported by insulating bushings 5. The switch blades 6 are connected by links 8 and bell crank-levers 9 to actuating links 11 operated from shafts 13. The upper bushings 5a, 5b for the other phases are arranged in staggered relation, as shown, to obtain the necessary spacings of the outer ends of the conductors 4. For the same purpose, the lower bushings may be arranged at an angle to one another on the longitudinal axis of the tank. The blades 6 may be arranged to engage earthing contacts inside the tank, or separate earthing blades 14 may be provided outside the tank, and adapted to connect contacts 19 on the outer ends of the conductors to the tank.
Patent GB-1163193-A (GB)
Title: Improvements in or relating to Apparatus for Automatically Computing Acoustic Noise Level
IPC: G01H3/00
Filed: 1967-01-20
Abstract: 1,163,193. Measuring noise levels. NORWAY, CENTRAL INSTITUTE FOR INDUSTRIAL RESEARCH. 20 Jan., 1967 [22 Jan., 1966], No. 3071/67. Heading H4D. In an apparatus for automatically indicating noise level in desired units, e.g. Phons, Loudness Index or PNdB (perceived noise), noise signals from a microphone are applied to a bank of octave filters 2 having contiguous pass bands, the R.M.S. values of the filter output voltages are determined by circuits 3 and modified by function generators 4 producing outputs which are not-linear functions of their inputs, the function generator outputs are multiplied by a fixed fraction (e.g. 0.3) in units 6, the largest signal from the function generators is selected by unit 5 and multiplied at 7 by a second fraction which is unity minus the first fraction, and the outputs from units 6 and 7 are passed to a summing amplifier 8 whose output may be connected to a recorder 10 through a further non-linear function generator 9. An amplitude compressor may be included in each R.M.S. value determining circuit 3, so that the apparatus can cover a 50 dB dynamic range.
Patent GB-893426-A (GB)
Title: Improvements in or relating to pressure rollers for calenders, foulards or the like machines
Inventor: HARZENDORF GERHARD
IPC: F16C13/00
Filed: 1961-01-26
Abstract: 893,426. Rollers. ERSTE MASCHINENFABRIK KARL-MARX-STADT VEB. Jan. 26, 1961, No. 3140/61. Class 42 (2). In a pressure roller of the kind comprising a hollow roller and a plurality of supporting rollers disposed therein, the latter comprise rings radially resiliently mounted on a continuous core stationarily disposed in the hollow roller and there is provided pressure means in the core which act only on that part of each ring which at any instant faces the line of application of the roller. As shown, the roller consists of a hollow roller 1, a continuous stationary core 2 and supporting rings 3 and is driven by a spur-wheel 4 mounted at one end. The rings 3 are constituted by anti-friction bearings, the outside diameters of which fit the inside of the roller 1 and the inside diameter of which is at least as great as the core 2. Rings 3 are resiliently mounted on core 2 by pistons 17 disposed in radial bores 16 connected to axial bore 15 in core 2 and through which pressure medium acts. Opposite the bores 16 the core 2 is recessed at 14 to act as guides for rings 3.
Patent GB-371944-A (GB)
Title: Improvements in or relating to packing devices
IPC: B65D43/00
Filed: 1931-01-31
Abstract: 371,944. Packing fragile articles. MAYERS, E. W. and CLAYTON, MAYERS & CO., Ltd., North Circular Road, Cricklewood, London. Jan. 31, 1931, No. 3172. [Class 94 (i).] For facilitating the packing of fragile articles in flexible walled containers, a supporting device is used comprising rigid walls adapted to be assembled to fit closely round the container, and a closing member adapted to be mechanically moved down on to the edges of the walls to press the closure of the container into position. The base 2 and back wall 3 is bolted to a metal framework 1, and sides 6, 7 are hinged to the back wall at 4, 5, metal lugs 8, 9 co-operating with slotted plates 10 to secure the sides in their closed position. The front wall 12 is fitted with lugs 13, 14 to fit into slots 15, 16 and projections 20, 21 adapted to engage with hooks 22, 23 on the side walls. Angle irons 18 embrace the side walls to hold the front sides in position. The closing member consists of two independent sections 24, 25 adapted to be temporarily hinged by a link 27 to one of the sides and drawn down into the closed position by links 29, 30, 35. The sections are separated by a space so that the flaps of the container can be secured in the closed position by adhesive strips. A groove 40 accommodates a metal band which may be secured in any suitable manner. The device may be mounted on wheels, or may be disposed in an oblique position for convenience in packing. In use, the flexible container is placed on the base, the walls are assembled in position to support it, the articles are packed in resilient packing material, and after the closing member has been operated the flaps are secured. Specification 250,191, [Class 94 (i), Packing &c.], is referred to.
Patent GB-219638-A (GB)
Title: Improvements in or relating to the mounting of back plates upon artificial teeth
IPC: A61C13/00
Filed: 1924-02-07
Abstract: 219,638. Platschick, B. July 28, 1923, [Convention date]. Addition to 211,851. Riveting.-Relates to the backing of artificial teeth in the manner described in the parent Specification and consists in the provision of a holder for the teeth and metal backings during the riveting or like operation, and an improved riveting tool. The work-holder, Fig. 1, comprises a block 8 of soft material such as lead, cork, or indiarubber, with or without recesses 9 for the teeth, and with straps 10 hinged at one side at 11 and secured at the other side by catches 12 so as to hold the tooth 1 with its backing plate 2 in position during the riveting or like operation. The riveting-tool, Fig. 2, comprises a barrel 13 fitted with a nozzle 15 to be placed over the flange on the backing plate which surrounds the hole through which the tooth cramp passes and bored to receive the rod 17 having a pointed end 19 to penetrate and expand the end of the cramp. The upper end 16 of the rod 17 is of larger diameter than the lower part and is formed with a knob 18. A spring 20 retracts the rod 17 after the riveting operation. In a modification the rod 17 is operated by screwing and not by direct pressure.
Patent GB-1379271-A (GB)
Title: Flywheel assemblies for automotive vehicles
IPC: F03G3/08
Filed: 1972-01-24
Abstract: 1379271 Flywheel driven vehicles A L NASVYTIS 24 Jan 1972 3264/72 Heading B7H [Also in Division F2] A flywheel driven vehicle includes a flywheel 38 mounted for rotation about a vertical axis, a motor 20 connected to the flywheel via a oneway clutch 27, and transmission means including an infinitely variable gear-box 15, propeller shaft 14 and differential 13 which connect the flywheel to the driving wheels 11. The motor 20, e.g. an I.C. engine, is used to " re-charge " the flywheel and is started by a speed responsive switch 38a when the speed of the flywheel falls below a minimum value and is stopped by the switch 38a when the speed of the flywheel reaches its maximum value. The engine 20 is automatically controlled to run at its rated r.p.m. The gear-box 15 has a ratio range which can be varied continuously from infinity to one by a pedal 60, the speed of the vehicle being controlled solely by the pedal 60. The flywheel 38 is mounted in an evacuated housing 40 which can move along arcute guides to allow precession of the flywheel (shown dotted, Fig. 2) when the vehicle rolls when cornering. The flywheel 38 is connected by a clutch 39 to a bevel gear 36 which is connected via bevel gears 35, 31 and 30 to an input-output shaft 28, 34. The input shaft 28 is connected to the motor 20 via one-way clutch 27 and the output shaft 34 is connected to the gear-box 15. The flywheel 38 may be maintained at its maximum speed when garaged by an electric motor 61 which can be connected to household electric supply by connector 62.
Patent GB-966202-A (GB)
Title: Fluid mixing valves
IPC: G05D23/13
Filed: 1962-01-29
Abstract: 966,202. Valves. A. LINS. Jan. 29, 1962 [Feb. 1, 1961], No. 3280/62. Heading F2V. A hot and cold water mixing valve comprises a housing 1, Fig. 1, having a cold water inlet 3, a hot water inlet 4 and a mixture outlet 5. An inner sleeve 2, formed by separate parts 2a, 2b, 2c, defines with valve seats 9a, 11a and wall 25 a cold water chamber 6a, a hot water chamber 7a and a mixing chamber 8a. Flow from the chambers 9a and 11a to the mixing chamber are controlled by valve members 9d, 11d, the flow from the cold water chamber taking place past valve 11d, ports 13, an annular chamber 14 and ports 15 whereby the hot and cold water enters the mixing chamber at a point remote from a temperature response device 20 and thus the mixture flows past this device which is not effected directly by the hot or cold water. The device 20 comprises a housing 20a and a portion 10c of a support 10 which forms a closed chamber with a bellows 20c, connected to the portion 10c and a flange 20d of a rod 20e, the closed chamber being filled with volatile liquid such as that sold under the Registered Trade Name " Freon." The valve member 9d is fixed to the support 10 while the valve member 11d is urged by a spring 26b into contact with a nut 18a screwed into a rod 26 fixed to the support 10. The axial position of the nut 18a is adjustable by a rod 29 to control the total flow through the valve. The nut and hence the support and temperature responsive device is loaded by a spring 33 which is adjustable to vary the temperature of the mixture. The initial loading of the device 20 may also be set by the adjustment of rod 20e and flange 20d. The valve members 9d, 11d are provided with O-ring seals such as 9g. An alternative form of sealing is shown in Fig. 2, where the O-ring 9g is not located in a groove but between the valve water 9d and the portion 2c, these members being shaped with a taper against which the ring is urged by fluid pressure acting in the direction 47. This arrangement is found to produce less resistance to movement of the valve member.
Patent GB-563952-A (GB)
Title: Improvements in or relating to variable impedance chokes
IPC: H01F29/10
Filed: 1943-03-01
Abstract: 563,952. Inductances. HEYROLLE & CO., Ltd., A., BAYLES., J. W., and ROBERTSON, A. T. March 1, 1943, No. 3294. [Class 38 (ii)] [Also in Group XXIV] A variable impedance choke comprises windings B, C on polepieces A<SP>1</SP> on a rectangular core A and a pivotally mounted bridging member F, the operating spindle E of which is associated with clamping means whereby the bridging member may be clamped in adjusted position. Angular movement of the spindle is effected by a handle G having a pointer G<SP>2</SP> cooperating with a'scale, and clamping is effected by a handle J which operates a nut J to apply upward pressure to the spindle, thus bringing a conical surface E<SP>2</SP> on the lower end of the spindle into clamping relationship to a conical surface D<SP>2</SP> in the end of the spindle bearing D. An anchored washer K is interposed between the top of the nut J and the handle G to prevent the setting of the latter being disturbed by rotation of the nut J during clamping. The windings are divided into sections connected in series in pairs, the section nearest the pole tip on one side being paired with that furthest from the pole tip on the other side, and the pairs are connected in parallel.
Patent GB-1339233-A (GB)
Title: Roller bearings
IPC: F16C19/30
Filed: 1972-01-25
Abstract: 1339233 Bearings ROLLWAY BEARING CO Inc 25 Jan 1972 [22 April 1971] 3481/72 Heading F2A A multiple thrust roller bearing comprises two or more pairs of parallel thrust plates 14- 17, each pair consisting of an upper and a lower plate of non-rectangular cross-section and having rollers engaged between their opposing faces, the plates being alternately mounted on a shaft 5 and on a housing 6 to form cantilevers which are deflected under a thrust load, the dimensions being such that the slopes of the co-operating roller track surfaces for each set of rollers remain matched with one another, and a plurality of thrust-transmitting sleeves 18, 19 located alternately between adjacent shaftmounted plates and adjacent housing-mounted plates, the plates being located between a thrusttransmitting shoulder 7 on the shaft and a shoulder 8 on the housing. The ratio of the dimensions S/E may be 1À00 to 1À30. The pitch diameters 20, 21 of the sets of rollers may decrease in the direction from the shoulder 7 to the shoulder 8. Further ratios specified include S/G = 0À90 to 1À10; T/F=0À80 to 1À00; T/H=0À90 to 1À10.
Patent GB-1459062-A (GB)
Title: Skin-care and skin-protection agents with a content of skin-  moisture-conaining agents
IPC: A61K/
Filed: 1975-01-28
Abstract: The cyclic polybasic carboxylic acids or their salts correspond to the formula <IMAGE> in which M is hydrogen, alkali metal or alkaline earth metal or optionally substituted ammonium, R is hydrogen or a -COOM or -SO3M radical, m is an integer from 3 to 8, n is zero or 1 and p is zero, 1 or 2. They can be incorporated as skin moisturizers in any desired skin-care and skin-protection compositions based on the conventional ingredients. Compositions of this type show the properties of maintaining or restoring the retention of water by the skin and thus keeping the skin soft and flexible and fully functioning.
Patent GB-1122136-A (GB)
Title: A process for the preparation of ª‡-arylazo-formyl-acetic acids
Filed: 1967-01-24
Abstract: Compounds of formula Ar-N = N-CH(CHO)CO2H (Ar=mono- or poly-carbocyclic aryl) are prepared by reacting CH2(CHO)CO2H with diazotized ArNH2 at pH 3-9 in aqueous solution; the esters are prepared analogously.
Patent GB-582755-A (GB)
Title: Improvements in or relating to arrangements of aerials for radio-beacons
IPC: H01Q19/24
Filed: 1942-03-19
Abstract: 582,755. Directive radio signalling. SOC. ANON. DES INDUSTRIES RADIOELECTRIQUES, S.A.D.I.R. March 19, 1942, No. 3674. Convention date, May 29, 1941. Drawings to Specification. [Class 40 (v)] An aerial system for a radio beacon comprises two aerials each non-directive mounted a short distance apart on a rotating plate, the arrangement providing as required (1) a rotating beam, (2) an overlapping directional beam (by connecting each aerial alternately through a change-over switch in series with a phasechanging network), and (3) a circular radiation pattern (by exciting the aerials in phase).