baber/WOPTO huggingface dataset:
Patent GB-625939-A (GB)
Title: Improvements in oscillographs
IPC: G01R13/30
Filed: 1947-01-27
Abstract: 625,939. Oscillographs. PHILIPS LAMPS, Ltd. Jan. 27, 1947, No. 2454. Convention date, Jan. 5, 1944. [Class 37] In a cathode-ray oscillograph for displaying and determining the value of a voltage, the latter is applied to the input of an amplifier 1, Fig. 1, which feeds the vertical deflection plates 4 of a cathode-ray tube 3, the horizontal deflection of which is derived from a saw-tootli voltage applied to terminals 6. The vertical deflection plates are fed through a limiter comprising a resistance 8 in series with the live supply lead, the deflection. plate connected to which is earthed through a diode 9 biassed by a direct voltage from the source 11, and adjustable in known manner to a value shown by a calibrated scale 10. On the direct voltage is superimposed a small adjustable alternating voltage derived from a source 12 which may be a mains energized adjustably coupled transformer. The direct limiter bias is just visible as a flattening and broadening of the peak of the displayed waveform. The peak voltage is then indicated by the reading of scale 10. When the direct limiter bias is slightly lower than the peak voltage, and the superimposed alternating voltage is such that the resultant bias periodically exceeds the peak voltage, the limiter is alternately active and inactive, so that the area of the peak of the voltage waveform exceeding the direct limiter bias becomes feebly visible on the cathode-ray oscillograph screen by reason of the superimposed alternating bias waveform, which is visible as a stationary waveform if its frequency is an integral multiple of the timebase frequency. One of the amplifier tubes may function as a variably biassed limiter,- and the system is applicable to a magnetically deflected cathode-ray oscillograph or to a mirror oscillograph.
Patent GB-687899-A (GB)
Title: Improvements relating to alloy steels
Inventor: KIRKBY HENRY WILLIAM
IPC: C22C38/54
Filed: 1951-01-31
Abstract: In a modification of the invention of the parent Specification a forgeable ferritic alloy steel is produced by restricting the permissible range of proportions of C to 0.07-0.12 per cent. Within this range of C content the alloys may omit B and fall within the more restricted range of compositions as follows: C 0.07-0.12 per cent; Si 0.5-1.0 per cent; Mn 0.5-1.0 per cent; Ni 0.5-1.5 per cent; Cr 9.0-11.0 per cent; Mo 0.4-1.0 per cent; V 0.1-0.3 per cent; Nb 0.2-0.6 per cent; Ni 0.05-0.1 per cent; Fe the remainder.  The Nb may include residual amounts of Ta.
Patent GB-1509852-A (GB)
Title: Method of controlling a pump and apparatus for carrying out the said method
IPC: F04B49/00
Filed: 1976-01-22
Abstract: 1509852 Fluid-pressure servomotor systems ROBERT BOSCH GmbH 22 Jan 1976 [24 Jan 1975] 02497/76 Heading G3P [Also in Division F2] Overloading of a machine 10 driving both a variable displacement pump 12 and an auxiliary pump 21 delivering a viscous fluid at controlled temperature is prevented by a servomotor 14 which adjusts the output of the pump 12 in accordance with the pressure drop across a restrictor 27. The size of the latter is varied as the speed control 29 for the machine 10 is adjusted and the pressure drop produced actuates a control valve 25 for the servomotor. The fluid may be heated by an electrical element 48 controlled by a temperature responsive switch 44 which may also control a valve 26 to disconnect the servomotor from the valve 25. A pressure limiting valve 35 is provided. The pump 12 supplies a motor 19.
Patent GB-439728-A (GB)
Title: Orthoscopic diaphragms for roentgen ray working
IPC: G21K1/02
Filed: 1935-01-25
Abstract: 439,728. R÷ntgen - ray screens. SIEMENS - REINIGER - WERKE AKT.- GES., 31, Karlstrasse, Berlin. Jan. 25, 1935, Nos. 2517 and 2518. Convention dates, Feb. 5, 1934 and Dec. 28, 1934. [Class 98 (i)] An orthoscopic screen for intercepting secondary radiation comprises an assembly of minute solid or tubular rods or needles, as of prismatic, cylindrical, truncated pyramidal, or conical form, made of ray-impermeable material such as lead, distributed irregularly but approximately uniformly over the area of the screen, the lengths of the rods or needles being substantially normal to the screen and directed towards a common point or line at a finite or infinite distance from the screen. Such a screen may be formed by cutting a disc of wood across the grain and filling its vessels as with metal, an alloy, or a lead compound ; or by perforating a plate with minute holes and filling them as with lead ; or by strewing pre-formed needles on a plate as of metal coated with a binding medium as of gelatin, erecting the needles by an electric field, warming the binder, cooling it again to fix the needles in erected position, and filling the interspaces with a ray-permeable liquid which sets ; or by pressing molten metal or alloy, or a paste containing lead, through the holes of perforated plate, hardening the extruded needles, and applying a filler; or by electrodeposition of needles on a metal plate and applying a filler ; or by forming by extrusion one or more fine wires as of lead coated with a binder as of gelatin, cutting into short lengths, assembling these in parallel juxtaposition and uniting them by heat, pressure, or application of a binder. Screens may also be formed by embedding needles e, Figs. 2 and 3, made for example of tungsten powder in a cellulose ester binder, transversely and irregularly in a carrier strip a as of unsized calendered paper, which may be coiled or doubled upon itself. The middle portion b of the coiled diaphragm may be a small disc cut eccentrically from another similar coil. Each face of the finished screen may be coated with waterproof varnish. The above methods produce screens with parallel elements, but curved screens may also be formed, as by bending in a steam bath a wooden screen produced as above. If such a screen is bent into the form of a spherical cap a, as shown in Fig. 1, screens of disc or other form may be produced from it by parallel cuts, as at f. The needles b are directed by the bending operation towards the position c of the ray-source. Reference is made to the movement of the screen during the radiographic exposure.
Patent GB-485851-A (GB)
Title: Improvements in means for controlling the vapour pressure in electric discharge devices
IPC: H01J17/26
Filed: 1938-01-26
Abstract: 485,851. Thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 26, 1938, No. 2631. Convention date, Jan. 26, 1937. [Class 39 (i)] In electric discharge devices containing a filling consisting of a condensible medium such as mercury a valve 37, Fig. 1, is provided to close the orifice of an independent condensing chamber 34 when the device stops working ; the valve may be opened by a bimetallic strip 38 susceptible to heat from the cathode 11 or by electromagnetic means 59, Fig. 3, which act when the discharge circuit is closed. As the chamber 34 is closed until working conditions are attained, the mercury therein cannot be distributed over the discharge envelope as the device cools when stopped, and quicker starting is obtained. The chamber 34 may be of the type described in Specification 455,591 withradiating fins 36 or it may be of glass 48, Fig. 3, the valve being a disc 53 resting on the top of a perforated cap 51 to the mercury chamber 46. A rod 56 with armature 57 is used to tilt the disc 53. The device may be a rectifier with the anode 10 carried by a glass corrugated mount 14 from the metal envelopes 13 ; the envelope has rigidly attached the control grid 26 and the cathode 11 is surrounded by a shield 24. The cathode consists of spaced discs 19 coated with emissive material and within a perforated metal container 22. Shields 18 are provided around the glass-to-metal joints of the anode mount.
Patent GB-1117342-A (GB)
Title: Self-tuning filter system
IPC: H03J7/06
Filed: 1966-01-20
Abstract: 1,117,342. Transistor circuits. COMPAGNIE FRANCAISE THOMSON HOUSTONHOTCHKISS BRANDT. 20 Jan., 1966 [21 Jan., 1965], No. 2692/66. Heading H3T. A band-pass filter network automatically tunes so that the bandwidth remains constant and is symmetrically disposed about the central signal frequency. As applied to the I.F. amplifier of a frequency-modulation receiver, input signal is applied to a variable-gain amplifier 1, Fig. 1, to the output of which a number of resonant networks 21-24 &c. are connected. Each resonant network comprises a seriestuned acceptor circuit 201, 202 and an output resistor 203 across which is connected first and second emitter-followers 204, 205 respectively. Each of the first emitter-followers 204 feeds via a corresponding gate 61-64 &c. into a combining circuit 7, a combined output being obtained at terminal 9 and also being applied to an A.G.C. circuit 8 controlling the gain of amplifier 1. Each of the second emitter-followers 205 feeds into a corresponding voltage-doubling rectifier 31-34 &c. coupled to a corresponding trigger circuit 41-44 etc.; each trigger circuit is provided with a delay potentiometer 402, 403 and is connected by way of a corresponding input line D1 &c. to an interconnecting network, Fig. 2, comprising a diode matrix which cross-couples the input lines to output lines C1 &c. The output lines C1 &c. are coupled to corresponding gates 61-64 &c., Fig. 1, so that energization of any output line causes the corresponding gate to be opened. As shown, the diode matrix is so arranged that upon obtaining an input from that detector circuit which is energized from the resonant network corresponding to the frequency of the signal, those gates are opened which correspond to the signal frequency and also two channels on either side thereof. The diode matrix may alternatively be arranged so as to pass the side-bands but suppress the carrier (Fig. 3, not shown). The Specification also describes a modification capable of transmitting a signal of rapidly changing frequency without distortion: in this (Fig. 4, not shown) an auxiliary matrix is provided and causes the pass-band width to be momentarily increased during the period in which the signal is changing frequency.
Patent GB-644496-A (GB)
Title: Drive transmission mechanism
IPC: G05G1/00
Filed: 1948-01-29
Abstract: 644,496. Friction clutches. CHASE, H. E. S. Jan. 29, 1948, No. 2716. Class 80(ii)] [Also in Groups XVIII and XIX] A clutch mechanism particularly for connecting ,an indicating or control member spindle 3 to a coaxial hollow shaft 1 driven by the balance mechanism of a measuring device, e.g. a weighing machine, and which minimizes the axial and rotational effects on both parts 'during engagement and disengagement comprises fixed clutch members constituted by a drum 2 on the shaft 1 and movable clutch plates 5, 6 axially loaded into engagement by a spacing spring 7 and fixed respectively to the spindle 3 and a coaxial sleeve 4 slidably mounted on and preferably splined to the spindle 3. Cam faces on a wheel 10 engaging flanges 8, 9 on the sleeve and spindle permit engagement or force disengagement of the clutch. The clutch may be used for a series measurement wherein an initial reading is taken and the wheel 10 rotated to disengage the clutch and return the indicator to either of two limiting abutments (not shown), e.g. a zero stop, with possible slipping of the cam and flange faces until the clutch is re-engaged, whereupon a further reading is taken. The wheel 10 may be connected to a supply valve controlling or being controlled by the medium to be measured, and the clutch member 2 may comprise two parts spaced by bolts. Both plates 5, 6 may slide on the spindle 3.
Patent GB-794377-A (GB)
Title: Improvements in or relating to apparatus for manufacturing film or sheet material
IPC: B29C48/08
Filed: 1956-01-31
Abstract: <FORM:0794377/IV (a)/1> <FORM:0794377/IV (a)/2> In apparatus for making film or sheet material comprising a hopper into which dope is fed continuously and from which the dope is delivered on to a continuously moving endless receiving surface, the hopper is provided with a pair of blades which are directed towards, and have their lips spaced from, the receiving surface and form an elongated, narrow discharge slot through which a stream of dope is adapted to be extruded, the lip of the front blade, relatively to the direction of movement of the receiving surface, being offset rearwardly with respect to the lip of the rear blade so that the dope leaving the discharge slot forms a puddle of dope on the rear blade prior to being deposited on the receiving surface.  As shown in Figs. 3 and 4 the discharge slot 23 is formed by straight parallel walls 24, 25 on the front and rear blades 26, 27 respectively of the hopper.  The lip 28 of the front blade 26 is offset from the lip 29 of the rear blade 27 by a distance Z, so that the dope leaving the slot forms a puddle 30.  The distance Z should be at least 0.03 inch and not more than 0.07 inch.  The dope may be fed under pressure into the hopper and the depth of the discharge slot may be 3/16 -\ba1/2 inch, the maximum preferred width being 0.015 inch.  Examples of cellulose acetate dopes are given for use with the apparatus.
Patent GB-671139-A (GB)
Title: Improvements relating to shuttering for concrete walls
IPC: E04G11/08
Filed: 1950-02-06
Abstract: 671,139. Wall shuttering: LANNOYE, C M., and LANNOYE, L. C. Feb. 6, 1950 [Feb. 9, 1949], No. 3036/50. Class 20(ii) In erecting wall shuttering, a supporting framework of vertical channel members 2 supported by struts 3 and connected by horizontal channel members 6 is first erected; flanged shuttering panels 7 stiffened with horizontal angle irons 9 are then provisionally secured to the members 6 by means of U-straps 10 engaging openings in the angle irons 9 and the panels 7 interconnected along their flanges; tie rods 12 having bent ends which engage the members 6 are then passed through holes in the panels 7 and through tubular spacers 14 and the second wall of shuttering panels ejected so that the rods 12 pass through holes in the panels; finally, horizontal channel members 16 are placed cn the ends of the rods 12 and the assembly tightened by means of nuts 17 and angle irons 19 or 'by 'means of keys inserted in the ends of -the rods 12. The shuttering for forming the four walls of a room may be erected, the framework members 6, 16 being connected at the corners and the struts 3 connected to a beam 4 anchored to the floor or ground.
Patent GB-414379-A (GB)
Title: An instructional toy
IPC: A63F9/00
Filed: 1933-02-01
Abstract: 414,379. Instructional toy. RIPPON, P. I. V., 64, Abbey Road, St. John's Wood, London. Feb. 1, 1933, No. 3091. [Classes 132 (iii) and 146 (ii).] An instructional toy comprises in a container one or a number of movable elements bearing symbols and displaceable by an operating element bearing a symbol and having a projection or projections so that a symbol or symbols related to the symbol on the operating element is or are exposed through a window in the container. The device comprises a series of spring controlled slidable elements 13 bearing letters or other symbols which are made to appear at a window 12 on the insertion between the bars 18 of an element 20 bearing a figure and having a number of projections 22 which engage with the slidable elements 13 to move them to varying amounts so that there is exposed through the window 12 a series of letters forming a word related to the figure on the element 20. Several elements 20 with different figures and different arrangements of the projections 22 are provided. In a modification the slidable element 13 can be used in conjunction with a series of elements 20 each having one projection 22.
Patent GB-1076942-A (GB)
Title: New disazo pigments and processes for their manufacture
IPC: C09B33/153
Filed: 1966-01-24
Abstract: The invention comprises disazo pigments of the general formula <FORM:1076942/C4-C5/1> wherein A and B represent arylene radicals, R1 represents a benzene, R2 is alkyl, cycloalkyl, aralkyl or aryl and X is oxygen or sulphur and wherein the group XR2 is ortho or para to the -NH- group and the trifluoromethyl group is in the meta position to the -NH-group. Preferably A is a phenylene or diphenylene group which may be substituted and B is a phenylene group.  They may be prepared by (a) condensing acid dihalide of a dicarboxylic acid of the formula <FORM:1076942/C4-C5/2> with an aminobenzene of the formula <FORM:1076942/C4-C5/3> in a molar ratio of 1 : 2, or (b) coupling a diazo compound of an amine of the formula <FORM:1076942/C4-C5/4> in a molar ratio of 2 : 1 with a diacetoacetyl arylene diamine of the formula <FORM:1076942/C4-C5/5> Groups A and B may be substituted by halogen, alkyl or alkoxy groups and A may also contain cyano or trifluoromethyl groups. Condensation preferably takes place in an anhydrous medium, e.g. toluene, chlorobenzenes and nitrobenzenes in presence of an acid binding agent, e.g. anhydrous sodium acetate or pyridine. Coupling is preferably carried out in a mixing nozzle in slightly acid conditions in presence of dispersing agents, protective colloids and organic solvents which are miscible or immiscible in water. The yellow pigments obtained are used to colour cellulose ethers, esters, polyamides, polyurethanes, polyesters, lacquers and like formers, and natural and synthetic resins.
Patent GB-396764-A (GB)
Title: Improvements in or relating to electric and engine electric traction
IPC: B60L50/15
Filed: 1932-02-02
Abstract: 396,764. Electric rail vehicles or trains. ARMSTRONG, WHITWORTH, & CO. (ENGINEERS), Ltd., SIR W. G., Thames House, Millbank, London, and BECKETT, C. M., 55, Wordsworth Drive, Cheam, Surrey. Feb. 2, 1932, No. 3104. [Class 79 (iii).] In a system of electric and engine-electric traction using trains formed of a plurality of coaches with traction motors and one or more engine-electric coaches or mobile power-houses, the train is adapted to run over electrified and unelectrified track by arranging the traction motors to be connected, by one or more twoway switches in each coach having motors, either to the external supply on electrified track, when the power coach or coaches is or are preferably uncoupled from the train, or to an additional train bus-line or lines adapted to be connected with the engine-electric power plant when the train is to be run by this power. The two-way switches may be used to regroup the motors where the voltages of the engine-electric plant and the external supply are different. Fig. 1 shows a train comprising a Diesel-electric power coach A and coaches B provided with motors 3 and with shoes 6 for contact with the third rail or overhead wire on electrified portions of the line. Each coach has a two-way switch 9, by which the motors can be connected either to the collecting shoe 6 or to a bus-line 7 supplied from the engine-electric plant in the power coach A. Where high voltage D.C. is supplied on the electrified track, two engine-electric sets may be used in series to give the same voltage ; in this case the connection between the generators may be earthed, and a differential relay may be connected between each extreme connection and earth to cut off the excitation of the generators or disconnect them from the bus-lines when a difference of voltage occurs between the lines. Alternatively, or in addition, a differential current relay may be used. According to the Provisional Specification, the engine-electric set may be controlled. to vary its voltage, by apparatus actuated by the same control wires as the external supply control apparatus, and therefore by the same apparatus in the driver's cabs. Specification 359,161 is referred to.
Patent GB-555943-A (GB)
Title: Improvements in or relating to means for detecting and measuring torsional vibrations
IPC: G01H1/10
Filed: 1942-03-10
Abstract: 555,943. Torsional vibration indicators. STANDARD TELEPHONES & CABLES, Ltd., and STANSFIELD, R. March 10, 1942, No. 3132. [Class 40 (i)] [Also in Group XIX] Torsional vibrations of a rotating member, e.g. a shaft, are detected by an electric generator having one member (the armature) rigidly coupled to the member and the other member (the field) freely rotatable through a small angle relatively to the first member, the arrangement being such that when the rotating member has been run up to the desired speed, the freely rotatable member continues to run at constant speed and vibration of the rotating member generates an E.M.F. proportional to the angular velocity of the vibrations. The output of the generator is amplified, selectively filtered if desired, and used to control an oscillograph. The generator comprises a wound laminated armature 5, with the axis of winding perpendicular to the shaft 1 which is rigidly coupled by disc 2 or a sleeve coupling or gearing to the test shaft. A non-magnetic cylinder 12 carrying a C-shaped magnet 15 producing a transverse field is mounted for limited free relative angular movement on preferably plain bearings 13, 14, on shaft 1 to which it is coupled by a lost motion dog clutch 16, 17. Light springs 18 may be arranged, as shown in Fig. 2, to take up shock but to permit some free movement. The output from the winding is taken from slip rings and brush gear 9 mounted on ball bearings and restrained from rotation by a flexible cord or stirrup. The output is passed through a selective filter 24, Fig. 3, to an amplifier which supplies a control unit 26 of a cathode ray oscillograph. The time base circuit, which may be at 25 or 26 is synchronized by contact at 23 operated by the camshaft in the case of a test on a shaft of an I.C. engine. The filter may be switched in or out of the circuit and may comprise a timed circuit in shunt of the control circuit, the inductance and capacity of which are adjustable to pass a desired frequency for examination in the oscillograph. The amplifier may contain an integrating circuit which may be switched in if desired to indicate angular deviation. Specification 453,887, [Group XL], describes a suitable amplifier. The casing 12 may be loaded with additional mass when low frequencies are being dealt with, and may be almost filled with oil or grease to damp out non-recurrent vibrations. Continuous vibrations cut a path in the grease.
Patent GB-764281-A (GB)
Title: Improvements in or relating to wheel structures
IPC: F16D65/827
Filed: 1955-02-02
Abstract: 764,281. Vehicle wheels. KELSEY-HAYES WHEEL CO. Feb. 2, 1955 [Feb. 15, 1954], No. 3137/55. Class 144 (1). To provide brake - drum cooling a wheel has a cover disc 3 provided with inboard louvres 20 which open in a circumferential direction and project through and beyond aligned openings 12 in the wheel disc 5. As shown, the cover disc is retained on the wheel by snap engagement of its peripheral flange 15 behind circumferentiallyspaced radially inward projections 17 on the under-surface of the bead-seat flange 16 of the wheel rim. Gutboard louvres 19 facing in the forward direction of rotation 21 are provided to scoop air through the wheel disc holes 12 ; the inboard louvres facing in the opposite direction to create an ejection effect. In an alternative arrangement, Fig. 6, the cover disc may be secured by snap engagement of radially outwardly-projecting bosses 24, on the radiallyouter portions of the inboard louvres, behind the adjacent peripheral edge 26 of the wheel disc holes.