baber/WOPTO huggingface dataset:
Patent GB-1242899-A (GB)
Title: Electric heater control circuit
Inventor: DYKES CARREL HILTON
IPC: G05D23/30
Filed: 1968-10-14
Abstract: 1,242,899. Automatic temperature control systems. NORTHERN ELECTRIC CO. Oct. 14, 1968, No. 48664/68. Heading G3R. A control circuit for an electrical heater has a heater current switching means which is biased by a phase advancing circuit so that complete half cycles are admitted to the heater dependent on the temperature of the heater element. A heat 10 is serially connected with a thyristor 12 and another heater 44 which influences a temperature dependent resistor 40. An RC circuit 20, 22 connected to gate 18 advances the phase of a supply 14, 16. When the supply is first connected a transistor 25 will be biased conductively allowing current to flow through capacitor 20 and resistor 22 thus causing conduction of the thyristor 12. After a quantity of current has passed through resistor 44, the resistance of resistor 40 is lowered hence transistor 24 and thyristor 12 will be rendered non-conductive. In an alternative arrangement the upper connection of capacitor 20 may be connected to the supply 14.
Patent GB-1212626-A (GB)
Title: Electrical interconnection means and method of fabrication thereof
IPC: H05K3/46
Filed: 1968-10-16
Abstract: 1,212,626. Printed circuit assemblies. BUNKER-RAMO CORP. 16 Oct., 1968 [6 Nov., 1967], No. 48957/68. Heading H1R. A structure for inter-connecting microminiaturized high-speed electronic circuits includes an electrically conducting plate having an elongated channel formed therein in which an elongated conductor is disposed supported by and electrically insulated from the plate by dielectric material. A conductive plate 82 of copper or aluminium is provided with elongated troughs 84 in its top surface by photo-etching to a depth greater than half the plate thickness to define an endless channel after which the troughs are filled with dielectric material 86. Troughs 90 are now formed in the bottom surface of the plate in a similar manner and have the shape shown in Fig. 5 (d). Three forms of elongated conductors 72, 74 and 78A are thus formed when the troughs 90 are filled with dielectric material, Fig. 5 (e). In order to obtain conductor 78 in the form shown in Fig. 5 (f ) both surfaces of the plate 82 are again covered with photoresist, exposed except for the top and bottom surfaces of conductor 78A and then etched and subsequently filled with dielectric material. Coaxial lines can be produced by sandwiching plate 82 between two further conductive plates, Figs. 2 (a), 2 (b) (not shown), the conductive plates being provided with elongated grooves facing the grooves 84 and 90 in the case where the conductors 72, 74 are in the same plane as the surfaces of the plate and the grooves filled with dielectric material. Additional grooves in the conductive plates are not required when the central conductor is in the form shown at 78. A stack of conductive plates can be formed with the conductors disposed between the plates in different planes being interconnected by conductors passing through the plates and insulated therefrom by dielectric material, Fig. 4 (not shown). Coaxial lines can also be produced by plating top and bottom surfaces of the conductive plate 82 with conductive layers by electroless and electroplating processes, Fig. 9 (not shown).
Patent GB-1278438-A (GB)
Title: Camera shutter and self timer
IPC: G03B9/58
Filed: 1969-10-07
Abstract: 1278438 Electronically controlled shutters NIPPON KOGAKU K K 7 Oct 1969 [8 Oct 1968] 49182/69 Heading G2A An electronically controlled shutter has an electromagnet 7 which while energized suspends an operation of the shutter, and a passive impedance to reduce the energizing current through the magnet after initial energization. A parallel combination of a resistor 14 and capacitor 15 is connected in series with the coil, and the energizing current falls as the capacitor charges. The power consumption from battery 1 is thus reduced. The electromagnet may be energized for a time which gives an exposure or which gives a time delay before the release operation of the shutter.
Patent GB-1109097-A (GB)
Title: Improvements in or relating to stencils and to manfacturing stencils
Inventor: WOODBRIDGE LEONARD ALBERT
IPC: C23F1/02
Filed: 1963-12-13
Abstract: <PICT:1109097/C6-C7/1> A stencil comprises a laminated sheet in which the corresponding apertures in the different laminae have been separately etched. As shown, the stencil consists of two laminae 1, 2, of silver and phosphor bronze respectively, the lamina 1 being 0.0005 inch thick and about one tenth the thickness of the sheet. A portion 3 of the lamina 2 is first etched away for using a resist and an etching medium to which silver is resistant e.g. ferric chloride. The lamina 1 is then similarly etched at 4 using Farmer's solution as an etching agent.  The portion 3 may be made oversize as shown by suitable disposal of the resist or as a result of under-cutting during etching.  The stencil may be employed for forming a condenser by depositing a first metal element and dielectric material with inclined edges on a substratum, by evaporation, the phosphor-bronze lamina 2 being in contact with the substratum. The second metal element may be deposited with the silver lamina 1 in contact with the substrate so as to give a well-defined boundary.
Patent GB-1191020-A (GB)
Title: Motor Vehicle Simulator Systems
Inventor: FLETCHER LAWRENCE ALFRED
IPC: G06G7/70
Filed: 1967-10-31
Abstract: 1,191,020. Motor vehicle simulator systems. ELECTRONIC MODULES (DESIGNS) Ltd. 31 Jan., 1969 [31 Oct., 1967], No. 49442/67. Heading B7H. In a simulator system having driving controls corresponding to those of a motor vehicle arranged to operate a display device for simulating the consequences of the operation of the controls, the display device is driven by an electric motor at a speed determined by comparing a control signal having a voltage dependant on the position of the clutch, brake and accelerator pedals and gear lever with a feedback signal representing the motor speed. The control signal is derived from a capacitor C1 which is connected in parallel with a variable resistor RV2 controlled by the brake pedal and is fed from a potential divider RV1 controlled by the throttle pedal through a switch SC opened when the clutch pedal is depressed and through a resistance network including resistors R1-R9 and switches S1-S5 actuated by the gear lever. The feedback signal is provided by a tacho-generator TG coupled to the motor armature SMA. A mixing network R10, R11 to which is applied the feedback signal, and also the control signal through a buffer transistor TR1, produces an output which controls the motor through transistors TR2, TR3 forming a balanced differential amplifier which drives, through buffer transistors TR4, TR5, current amplifiers TR6, TR7 connected to each half of the field winding SMF of the motor. Wheels driven by the motor are steered by means of a steering wheel and arranged to drive a shadowgraph or screen display device. The signal from the tachogenerator TG, which represents the simulated road speed, is also applied to an engine speed simulation circuit including a tachometer M which indicates the simulated engine speed.
Patent GB-1504829-A (GB)
Title: Twist tube for false-twisting devices
IPC: D02G1/06
Filed: 1976-11-29
Abstract: 1504829 False twisting HEBERLEIN MASCHINENFABRIK AG 29 Nov 1976 [11 Dec 1975] 49619/76 Heading DID A false twist tube comprises a main tubular portion 1, a diametrally enlarged tubular portion 3 at one end providing a widened continuation of the passage 2 through the main tubular portion 1. The cross section of bore 4 of the tubular portion 3 taken at right angles to the direction of the passage 2 is is symmetrical about perpendicular, major and minor axes both axes being longer than the diameter of passage 2, and has parallel sides perpendicular to the minor axis of the cross section. The enlarged tubular portion 3 is formed on opposite sides with lateral bores or grooves 6 receiving the ends of a cylindrical thread guide pin 5 with the axis of the pin perpendicular to the major axis of the cross section of the bore. Preferably, the thread guide pin 5 is displaced laterally with respect to the longitudinal axis of the main tubular portion 1. The enlarged tubular portion 3 may be formed with opposed co-axial openings 7 through the shorter sides of the bore. These openings 7 may be perpendicular to the axis of the thread guide pin 5 but displaced towards the main tubular portion 1.
Patent GB-1151507-A (GB)
Title: Protection of Molten Metals
Inventor: NEU MAX GERHARD
IPC: B22D27/06
Filed: 1965-09-14
Abstract: 1,151,507. Continuous casting processes; mould lubricants. FOSECO INTERNATIONAL Ltd. 6 Sept., 1966 [14 Sept., 1965; 24 Nov., 1965], Nos. 39213/65 and 49851/65. Heading B3F. [Also in Divisions C1 and C7] Molten metals such as copper in a launder and mould are protected from oxidation by a covering of granules containing a material which will intumesce or generate a gas on heating. The material may also be for fluxing, insulating, lubricating and slag-forming. The protective granules are preferably carbon and the intumescent materials may be vermiculite, perlite and sodium silicate, and the gas generating materials may be water, calcium carbonate, urea, bicarbonates, ammonium nitrate, azo and nitroso compounds to maintain an atmosphere over the metal. These materials are present up to 50% by weight of the granules. Fluorspar may also be added, with water, dextrin or starch being used as a binder.
Patent GB-1403515-A (GB)
Title: Wide band pulsed energy system
IPC: G01S13/28
Filed: 1967-11-03
Abstract: 1403515 Pulse radar NORTH AMERICAN ROCKWELL CORP 3 Nov 1967 [7 Nov 1966] 50180/67 Heading H4D A pulse-type target detection system having an improved signal-to-noise ratio in addition to an improved signal-to-clatter response comprises means for transmitting a linearly frequencymodulated carrier wave pulse having a predetermined amplitude modulation envelope of a predetermined bandwidth and receiving means matched to the modulation envelope and responsive to received echoes of the transmitted pulse for providing an output. According to the embodiment of Fig. 1 the transmitting means of a pulsed radar system includes a pulse modulator 11 coupled via a T-R switch 12 to an antenna 10. Input 13 of modulator 11 is coupled by a modulator 14 to a source of a linearly frequency modulated carrier wave comprising a backward wave oscillator 15. The frequency of oscillator 15 is scanned by a sweep generator 16 driven by a system trigger in synchronism with modulator 11. The output waveform of modulator 14 is denoted by curve 23 of Fig. 2c. The receiving means comprises a non-linear receiver mixerdetector 24 having its output limited by a narrow-bandpass I.F. stage 26, the centre frequency of which corresponds to the fixed frequency of I.F. source 18 producing the envelope of the signal Fig. 2c. In normal operation in response to a discrete target (i.e. one having a radial extent significantly less than the transmitted pulsewidth), the output of detector 24 includes the I.F. signal which is translated through stage 26 and may be video-detected by a display indicator. A clutter patch having a significant radial extent produces an insignificant signal at the output of detector 24 due to the effects of decorrelation and random phase relation. An alternative method of obtaining a linearly frequency-modulated carrier wave is shown in Fig. 3, the output of multiplier 32 being coupled to the modulator 14 of Fig. 1. In a further embodiment (Fig. 6, not shown), the I.F. source applied to modulator 14 is frequency modulated to give a "chirped" I.F. amplitude modulation.
Patent GB-1114676-A (GB)
Title: Control system for an electrically-operated actuator
Inventor: FAULKES KENNETH MILFORD
IPC: G05D3/14
Filed: 1963-12-23
Abstract: 1,114,676. Control of motors. ENGLISH ELECTRIC CO. Ltd. 21 Dec., 1964 [23 Dec., 1963], No. 50637/63. Heading H2J. Actuator motor 10 is moved to a desired position in a predetermined direction according to the duration and polarity of pulses delivered to clipper 14 whose output is fed to integrator 13 providing a direct voltage V1 which rises to a value proportional to the width of the input pulses, and which is applied to mixer 12. The integrated output signal V2, of tachometer generator 16 is fed back to the mixer where it is subtracted from signal V1, so providing reversible signal V3 which is amplified to control the motor.
Patent GB-507021-A (GB)
Abstract: 507,021. Thermionic valves. HAZELTINE CORPORATION. Jan. 17, 1938, No. 1512. Convention date, Feb. 2, 1937. [Class 39 (i)] An electron discharge device comprises an evacuated envelope within which are arranged a cathode 27, control electrode 28, screen grid 29, and anode 40, the latter being in the form of a band of conductive material either extending round the inner surface of the envelope and being narrow relative to the axial length of the cathode, or only extending round a small portion of the envelope, and widely spaced from all other electrodes of the device, whereby capacitance between the anode and the other electrodes is reduced. A washer 32, which supports the upper ends of the grids, also carries a grounded metallic shield 36, which in turn carries a mica washer 37 for centring the electrode structure within the tube. The anode 40 is in the form of a low resistance band which may take the form of a metallic coating on the glass wall of the envelope 21. Its length does not exceed one-third of that of the cathode and it is connected to a cap 41 at the side of the device, which is separated as far as possible from the cap 39 for the control grid without unduly increasing the lengths of the leads. A suppressor grid 30 may be provided and in addition a high resistance layer of graphite 43 is provided on both sides of and connected to the anode band, the coatings thus extending the whole length of the cathode. This resistance layer serves to prevent wall charges accumulating on the walls of the device. The suppressor grid may be omitted, the effect of such a grid being obtained by maintaining during operation an electron density between the screen grid and the anode which is sufficiently high to create the required repelling field.
Patent GB-1277270-A (GB)
Title: Improvements in or relating to caps for driving drivepins
Inventor: HSU YUNG SHING
IPC: B25C1/12
Filed: 1969-10-16
Abstract: 1277270 Animal-stunning appliances OMARK INDUSTRIES Inc 16 Oct 1969 50901/69 Heading AIM [Also in Divisions B4 and F3] A driving cap comprises a deformable substantially cylindrically shaped cushioning pad 44 having a power pill 46 embedded in one end thereof, the pad being in use placed on the head of a drive pin with the pill opposite the drive pin. The pill is ignitable at no less than one pound second impulse. The drive pin may be a fastener 38 or a piston of a cattle stunning device. The pill is preferably of compacted nitrocellulose fibres having a density of approximately 1 gram/c.c. The pad 44 is made of P.T.F.E. or soft grade aluminium and is coated with a lubricant 48. As illustrated the fastener head is received in a recess in the pad. In the illustrated fastener driving tool a blow applied to knob 34 causes portion 29 of ram rod 26 to ignite the pill 46. The pad is then deformed into gas tight sealing engagement with bore 16. Housing 12 is preferably of moulded plastics, and barrel 14 is of hard material e.g. steel. A noise proof lining 22 is moulded in a guard 18. (For Figures see next column)
Patent GB-509792-A (GB)
Abstract: 509,792. Fluid-pressure servomotor-control systems; electro control systems. SPERRY, GYROSCOPE CO., Inc. Feb. 14; 1938, No. 4564. Convention date, Feb. 13, 1937. [Class 135] [Also in Group XXXVIII] In a system for controlling a heavy object from a controlling object, any departure from synchronism of the objects is caused to operate a relay controlling the supply of power to a reversible motor driving the controlled object, means responsive to the speed of the latter acting on the relay so that the power motor is switched off prior to reaching the position of synchronism, the inertia of the controlled object carrying it into this position. Upon the controlling handle 1 being rotated through a small angle, the rotor 8 of the "fine" selsyn transmitter 9 is displaced causing a corresponding movement of the receiver 11 which rotates discs 20, 20<1>, for example, counter-clockwise, to allow compressed air from pump 24 which has passed through chamber 14 and pipe 18 to flow through pipe 28' to one side of diaphragm 23 causing it and the piston 30 of valve 31 to be displaced to the left. Fluid, such as oil, passes from pump 37 through valve 31. and pipe 34 to a hydraulic motor 35, returning through pipes 34<1>, 51 to reservoir 49. The searchlight 27 is thus turned towards its final position, a shaft 42 forming the follow-up connection to the selsyn receivers 6, 11. As the shaft of motor 35 gathers speed, the air pump 38 sucks air through valve 40 and pipe 39' to reduce the excess pressure caused by the rotation of discs 20, 20<1>, until the diaphragm 23 and piston 30 regain their normal positions. The pump is constructed so that the decrease in pressure is proportional to the speed of rotation and the air is expelled through pipe 39 and valve 41. The motor 35 is now driven from the searchlight and acts as a pump, forcing oil through valve 44 and brake valve 46, which is adjustable by rotation of cap 47, into pipe 48, and through valve 53 and pipe 34 to motor 35. In order to give a coarse control the rotor 3 of selsyn 4 operates receiver 6 in turn rotating a cut-off disc 13 covering ports 21, 21<1> and having a slot a little wider than port 16, so that port 16 is covered and one port 21, 21<1> uncovered causing diaphragm 23 to be displaced and motor 35 to rotate the searchlight 27 towards its final position. The Specification as open to inspection under Sect. 91 comprises also the modification, Fig. 5 (Cancelled) in which rotation of handle 73 causes the selsyn receiver 56 to move roller contact 57 into contact with one of segments 58, 59, releasing brake 74 and energizing A.C. motor 64 having reversing field windings to rotate the wheel 65, a follow-up drive 66 acting on selsyn 56 and also driving a governor 68 to rotate a cam 70 against which is pressed a spring-urged rack 71. As the speed of the wheel 65 increases the segments 58, 59 are rotated so that contact 57 leaves the segment before reaching its normal position. The brake 74 is then automatically applied. This subject-matter does not appear in the Specification as accepted.
Patent GB-1366831-A (GB)
Title: Energy absorption devices
IPC: B60R19/34
Filed: 1972-11-07
Abstract: 1366831 Resilient and deformable energyabsorbing devices OMARK INDUSTRIES Inc 7 Nov 1972 [15 Nov 1971] 51237/72 Heading F2E A two-stage energy-absorbing device employs, first, compression of resilient means and then, if the impact is severe, permanent deformation of a drawable member by the drawing of it through a die. In Fig. 2, impact on a vehicle bumper 14 secured to a first bracket 16 separates the first bracket from a second bracket 18 secured to the vehicle frame 12, spring washers 40 being compressed, and then part of a drawable portion 22 of a rod 20 is reduced by passage along it of a die member 32 in the process, Fig. 3. The consequent increase in length of the reduced portion 24 of the rod 20 may be compensated for by tightening nut 30 in resetting the device. In Fig. 6 (not shown), the spring washers are replaced by an elastomeric pad. In Fig. 4 an elastomeric pad 42 is located between the first bracket 16 and the die member 32<SP>1</SP>. In Fig. 7 a column 56 secured to a bumper 52 is telescopically slidable within a second column 54 secured to the vehicle frame 50, and a drawable rod 58 located between a die washer 60 and the end of column 54 has a reduced portion 64 on which are located spring washers 66 abutted by the column 56. On impact, column 56 first compresses washers 66, and then (through the washers) pushes die washer 60 along rod 58, the cross-section of rod 58 thereby being progressively reduced.
Patent GB-1095115-A (GB)
Title: Device for sorting tubes with and without yarn remainders
IPC: B65H67/06
Filed: 1964-12-17
Abstract: 1,095,115. Sorting yarn tubes with and with-out yarn remainders. W. REINERS. Dec. 17, 1964 [Dec. 21, 1963], No. 512354/64. Heading D1F. Tubes with and without yarn remainders are sorted by moving them over a lever 11 which hooks itself into any yarn turns such that the lever is caused to pivot. The tubes are in turn pushed by slider 5, reciprocated by motor 6, across lever 11 into a V-shaped trough formed by side flaps 38, 44 pivotally suspended from spindles 36, 43 respectively. Depending on whether or not lever 11 has been pivoted to actuate switch 21 one of the electromagnets 26, 34 is activated to cause one of the flaps to pivot so that the tube may slide down the appropriate inclined plate 39 or 45 into the appropriate box 40 or 46. The lever tip has needle points and is curved to correspond with the curvature of the tube. Lever 11 is pivotally mounted on a pivotally mounted lever 15 such that the initial turns of yarn cause lever 11 to pivot through 180 thus allowing the succeeding yarn turns to move over the needle points of lever 11 to wipe off any yarn bits caught therein. In modifications there may be an air ejector system actuated by the pivoting of lever 11, or the pivoting of lever 11 may be adapted to raise the tube into the region of a mechanical or air ejector.
Patent GB-1095699-A (GB)
Title: Improvements relating to hand trucks
IPC: B62B3/00
Filed: 1965-12-03
Abstract: 1,095,699. Hand trucks. H. C. SLINGSBY Ltd. and G. SLINGSBY. Dec. 2, 1966 [Dec. 3, 1965], No. 51380/65. Heading B7B. A hand truck has main frame members of tubular form, the spaces between the frames being filled with round wire rods to form a mesh, the wire rods either passing through or secured substantially centrally of the tubular members.