baber/WOPTO huggingface dataset:
Patent GB-622233-A (GB)
Title: Improvements in or relating to radio altimeters and other radio devices for measuring distance
IPC: G01S13/34
Filed: 1946-07-26
Abstract: 622,233. Frequency measurements. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 26, 1946, No. 22381. Convention date, July 26, 1945. [Class 37] [Also in Group XL (c)] In a beat frequency type radio altimeter direct and ground reflected waves from frequency-modulated transmitter 1 are combined in receiver 53 and the beat frequency which is a function of the height is fed through limiter 33 to capacitor 31. During each positive halfcycle the capacitor 31 is charged through diode 29 and during each negative half-cycle it discharges and charges in the opposite direction through diode 27. Successive cycles build up the charge on relatively large capacitor 41, making its potential increasingly negative until the average discharge current through resistor 35 is equal to the charging current. As the charge received by capacitor 41 during each beat frequency cycle is the same, the higher the beat frequency the greater the voltage across capacitor 41. Further, increase in frequency as this voltage rises would produce less and less increase if the cathode of diode 29 were maintained at constant potential and to prevent this the cathode is connected to the cathode of D.C. amplifier valve 17 which follows the potential of that valve's control grid in turn fed from capacitor 41 ; thus making the measuring circuit linear in operation. The frequency may be read off from indicator meter 51 provided with zero and full scale setting adjustments 47 and 49 respectively. In the system described the width of the modulation sweep band is a function of the distance to be measured and is controlled by the voltage across load resistor 21 of the D.C. amplifier. Potentiometer 37 controls the modulation width obtained during maximum range operation. In a second embodiment, Fig. 2 (not shown), a circuit such as described in Specification 601,385 is employed to provide selective clamping of the indicator so that momentary loss of signal has no effect. Specification 543,943 also is referred to.
Patent GB-1516005-A (GB)
Title: Semiconductor stores
IPC: H01L29/423
Filed: 1976-06-10
Abstract: 1516005 Semi-conductor data-storage element SIEMENS AG 10 June 1976 [21 July 1975] 22532/76 Heading H1K In a data store formed in a semi-conductor substrate each storage element, disposed at the intersection of a bit and word address line, consists of an electrically conductive zone formed by diffusion in the substrate and connected to or constituting part of one of its address lines, a storage electrode located over the substrate on an insulating layer and a transfer electrode connected to or forming part of its other address line and disposed on an insulating layer between and overlapping the zone and storage electrode. An outer conductive layer disposed on an insulating layer which extends over the transfer electrode is connected via a hole in the underlying insulation to either the transfer electrode or the zone and constitutes therewith one of the address lines. In the structure shown in Fig. 5 in which the storage and transfer electrodes of two adjacent cells are formed by parts of common polycrystalline silicon layers SK, TE, respectively and the diffused zones are portions of discrete bit lines BL, the outer conductive layer (of metal), connected at KT to the transfer electrodes, constitutes the word line. In an alternative paired cell structure, Fig. 7 the outer conductive layer forms a bit line BLM which is connected to a diffused zone BL common to the cells which have individual transfer and storage electrodes TE, SP.
Patent GB-1011488-A (GB)
Title: Electrical speed indicator
Inventor: GARFIELD WILLIAM LITTERY
IPC: G01S13/52
Filed: 1963-06-06
Abstract: 1,011,488. Measuring speed electrically. STANDARD TELEPHONES & CABLES Ltd. June 6, 1963, No. 22536/63. Heading G1N. An alarm circuit to indicate when the rate of descent of an aircraft exceeds the safe value established by a predetermined linear relationship between altitude and rate of descent comprises a network 21 (Fig. 3) fed with an altitude signal from 20, an altitude rate of change signal from 23, and a constant voltage from 24, in such proportions as to give a negative output when the rate of descent exceeds the safe value. The output signal is processed through a chopper circuit 25 coupled to a multivibrator 26, a limiting amplifier 27, a D.C. restorer 28, and an averaging circuit 29, to give a resultant D.C. voltage of a higher value when the mode of descent is safe, and a lower value when the rate of descent exceeds the safe value, to actuate an alarm circuit 30. An overriding alarm indication is produced directly via lead 31 when the altitude signal at 20 indicates less than 150 feet.
Patent GB-278501-A (GB)
Title: Improvements in or relating to the steering gear of automobiles
IPC: B62D7/22
Filed: 1926-09-14
Abstract: 278,501. Hooley, L. S. Sept. 14, 1926. Steering - gear; vibration-dampers. - A vibration-damper provided in the joint between the steering track-rod 1 and the stub-axle arm 2 comprises one or more layers of friction material 12 located between the two surfaces 7, 10 appertaining to the two parts of the joint and resilient means such as a spring tending to grip the parts together. In the construction shown the parts 7, 10 are recessed to receive squared parts 5, 6 of the track-rod 1 and arm 2 respectively. A bolt. 9 passing through the spring and all the other parts serves as the pivot for the joint and as the sole means connecting the parts together. The squared part 5 is formed on a socket 4 screwed on the track-rod 1 so that the effective length of the latter can be adjusted.
Patent GB-531860-A (GB)
Title: Clock-work apparatus
IPC: G04F7/06
Filed: 1939-08-04
Abstract: 531,860. Stop - mechanism. COMPAGNIE INDUSTRIELLE DE MECANIQUE HORLOGERE. Aug. 4, 1939, No. 22631. Convention date, Aug. 11, 1938. [Class 139] Comprises a clockwork apparatus characterized by a device for effecting in one position the stoppage of the clockwork movement and the return to zero of the seconds hand, and effecting in another position the instantaneous release of the clockwork movement. The seconds hand 10 is mounted on the axis 9 of gears 6, 7 with a certain friction and is rigid with a heart-cam 11. A restoring lever 12 urged by spring 13 in the direction f, is pivoted at 14 and provided with sloping surfaces 15 1 , 15 2  the nose 15 3  entering the depression 11, of the cam when the latter is in zero position. The lever 12 is fitted with a blade spring 16 and a hook 21. When the lever 12 is moved in the direction f 2  to the position shown in dotted lines, the spring 16 engages and arrests the balance wheel 17 and the hook 21 is held by a spring latch 22, and the seconds hand is zeroized by the surfaces 15 1 , 15 2 , To use tne device it is brought to this position and the minute and hour hands set to the hour at which it is desired to start by pushing in a knob against a spring to engage a pinion with the pinion on the axis of the minute hand. The knob 23 is then depressed to release the hook 21 whereupon the lever 12 springs back and releases the balance wheel giving it a starting flick. The nose on the lever 12 may be formed on a part slotted from the lever 12 and connected at one end to be springy. It may be formed on a separate piece held to the lever 12 by a spring. Instead of the lever 12 protruding, it may be arranged inside the case and actuated by a second lever. Instead of the push 23 release may be effected from a distance by arranging a solenoid to pull down spring 22. In a further modification, the lever 12 is actuated by a lever the start arm of which engages a cam on the lever 12 which in this form has an eye at the end engaged by a bush on the end of spring 22.
Patent GB-277799-A (GB)
Title: Improvements in circuit arrangements for radio receiving systems
IPC: H04B1/18
Filed: 1926-09-14
Abstract: 277,799. British Thomson-Houston Co., Ltd., and Kinman, T. H. Sept. 14, 1926. Undesired signals, eliminating. - A number of differentlytuned circuits are associated with a receiving aerial, and switching means are provided so that each circuit mav function alternatively as the input to a detector or amplifier, or as a rejector or shunt for undesired signals. As shown in Fig. 1 (22648/26), the switch S in position 1 short-circuits the longwave circuit L2, C2 and inserts the short-wave circuit L1, C1 across the grid and filament of the valve V. In position 2, the circuit L2, C2 is across the valve, whilst the circuit L1, 01 is left in the aerial circuit and functions as a wave trap or rejector for short-wave signals. The tuned circuits may be included in the input circuit of the valve instead of in the aerial circuit. Or they may be coupled in parallel to two series inductances in the aerial circuit. In the arrangement shown in Fig. 1 (3014/27), the two tuned circuits L1, C1 and L2, C2 are arranged in parallel in the aerial circuit, one or other being connected across the input of the valve, leaving the alternative circuit to act as a shunt to drain away undesired signals. A condenser may be inserted between the two circuits to maintain the tuning constant. Or as shown in Fig. 3 (3014/27), where both primary circuits are parallel-tuned, an additional capacity K and inductance L are inserted to prevent interaction between the primary circuits, and may also be tuned to a third wave length and connected to the switch S to function either as an acceptor or rejector for signals on this wavelength. In an alternative arrangement two inductances are connected through capacities, and the interfering signal is neutralized or balanced out by adjusting the coupling and phase between the coils, a third blocking circuit being arranged in shunt to strengthen the reception of the desired signal. Fig. 5 (3014/27) shows an arrangement in which the primary circuits are partly in series and partly in parallel, neither being wholly short-circuited in either position of the switch S. One or more reaction coils such as Lr, Fig. 1 (22648/26), may be used, and may. if necessary, be switched in and out of current by the switch S.
Patent GB-1185575-A (GB)
Title: Radio Transmitter for High Voltage Electric Power Transmission Line
IPC: G01R15/26
Filed: 1968-05-13
Abstract: 1,185,575. Protective arrangements. S. & C. ELECTRIC CO. 13 May, 1968 [17 Oct., 1967], No. 22675/68. Heading H2K. [Also in Division H1] A radio transmitter, e.g. for use in the protective system of Specifications 1,121,720 and 1,121,719, and for sending to a remote point a signal corresponding to the magnitude of the current in a high voltage transmission line on which the transmitter is mounted, comprises a tubular heat-conducting metal housing 20, a tubular resistive shunt 36 in the housing 20, a heat conducting transfer conductor 19 connected to the shunt 36, a radio transmitter in the shunt and metal end caps 45, 89. The housing 20, the shunt 36 and the conductor 19 are connected in series with the transmission line, the potential drop along the shunt 36 being used to modulate the transmitter, the end caps 45, 89 acting as an antenna. The power supply for the transmitter is provided by a supply circuit comprising Zener diodes, a capacitor and a bridge rectifier mounted on a heat sink 46 in the end cap 45 and connected to a current transformer 29 on the conductor 19. The components of the radio transmitter are mounted on a heat sink 71 carried on the lower end cap 78. Plug and socket connectors 54 are provided so that the lower end cap 89 with the transmitter mounted on it may be easily withdrawn after a clamp bar 95 has been released from hooks 93.
Patent GB-1081546-A (GB)
Title: Improvements in and relating to separators for suspensions
IPC: B01D29/11
Filed: 1965-05-28
Abstract: 1,081,546. Hollow filters for liquids. J. M. VOTTH G.m.b.H. May 28, 1965 [June 12, 1964], No. 22706/65. Heading B1D. A filter for filtering suspensions (e.g. impure paper pulp) comprises a perforate cylindrical screen with duct means for supplying suspension to one end and with at least one cleaning bar mounted on the end of at least one rotary supporting arm carried by a shaft, the leading edge of the or each supporting arm intersecting the surface of rotation of the leading vertex line of the associated cleaning bar at or in front of this vertex line, with reference to the direction of rotation of the cleaning bar. Accumulation of impurities thereon is thus prevented. As shown, impure suspension is introduced at 5, Fig. 1, and flows downwards inside perforate screen 1. Filtered suspension is discharged at 8, while impurities collect at 9 and are discharged at 10. Cleaning bars 2 supported by arms 4 are rotated by a shaft 3. The leading edge 11, Fig. 2, of each arm 4 intersects the surface of rotation of the leading vertex line 12 of the associated bar 2 in front of this line. The cross-section of bar 4 is shown at 13. In Figs. 4 and 5, (not shown), a single pair of arms 4 is provided at the top of the shaft 3, the bars 2 depending therefrom. The angles formed at the junctions of arms 4 and bars 2 are rounded, both inside and outside to avoid the formation of dead angles in the axial flow direction.
Patent GB-598442-A (GB)
Title: Improvements in and relating to the production of decorative articles such as shelf edging
IPC: B29C59/04
Filed: 1945-09-04
Abstract: 598,442. Combined printing and embossing machines. ROYAL LACE PAPER WORKS. Sept. 4, 1945, No. 22707. Convention date, Dec. 13, 1944. [Class 100 (ii)] Decorative materials such as shelf edgings are made by printing a backing-web b by means of a printing-couple p, p<1>, and uniting the same to a facing web f of transparent plastic material by means of a thermoplastic cement, or by the bonding by heat if both webs are of plastic material. As shown the webs are simultaneously united and embossed by embossing rollers e, e<1> adapted to register with the printed impressions, so that in the finished product the printed impression is arranged between the front and back layers and in register with the embossed design.
Patent GB-598459-A (GB)
Title: Improvements in or relating to exploders for electrically firing the detonators of explosive charges
IPC: F42D1/05
Filed: 1945-09-04
Abstract: 598,459. Hand-driven generators; charging and discharging condensers. MUTTER, W. A. Sept. 4, 1945, No. 22796. [Classes 35 and 38 (iv)] An exploder for firing the detonators of explosive charges comprises a manually driven generator for charging a condenser through a rectifier and switchgear for discharging the condenser through the firing circuit. As shown, the generator is connected to the rectifiers D1, D2 through an autotransformer T and a neon lamp N is connected thereto for indicating when the condenser is charged. The condenser C is shorted by a resistance R except when switches 54, 55 are opened by the insertion of the handle for driving the magneto. The latter is in a casing with the other components carrying a push button to operate switches S2, S3 for connecting the condenser to the firing terminals t<1>, t<2>.
Patent GB-337036-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: B60L15/04
Filed: 1929-07-25
Abstract: 337,036. English Electric Co., Ltd., and Morris, F. July 25, 1929. Master control. - In a traction system the actuating coils of the contactors, either electromagnetic or electropneumatic, for arranging the series parallel connections of the motors 1, 2 and for cuttng out the resistances 3, 4 are energized in the correct sequence by a drum or cam shaft controller A notched automatically under the control of a twoway relay to a position corresponding to that of the master controller C. After the reverser E is thrown to the required position, and the controller C placed at its first position i, a conductor 23 is energized and contactors are closed for the first position, and through this conductor the power is obtained for all the contactor coils when energized. In position s of the controller C., a relay 30 is energized and completes a circuit through contacts of an accelerating relay B to a notching coil 16, which intermittently interrupts its own circuit at contact 17 and causes step-by-step rotation of segments which complete a circuit for a notching coil 13 of the drum A. The relay 30 also completes the circuit of a holding coil 14 to prevent backward movement of the drum A. At this position s the two-way relay 18 is also energized, so that when the drum A reaches the full series position a segment 36 complete a shunt circuit around contacts 17 and so prevents further notching until the relay 18 is de-energized by moving the controller C to position p, whereafter notching is resumed until a segment 38 arrests further movement in the same manner. In the system, backward movement of the drum A is only obtainable by denergization of holding coil 14, that is by returning the controller C to the "off" position. A modification is described in which it is possible to drop back from the full parallel to the full series postion without having to go to " off " and notch up again. In this arrangement the two-way relay has two separate coils energized respectively for full series and full parallel positions. The notching coil may act directly upon the drum A, and an overload circuit-breaker can be arranged so that its closing coil can only be energized in the " off " position of the master controller.
Patent GB-168233-A (GB)
Title: Improvements relating to brooms
IPC: A46B11/06
Filed: 1920-08-03
Abstract: 168,233. James, H. T. Aug. 3, 1920. Self-feeding brushes. - A broom for washing large surfaces comprises a head portion consisting of two parts a, b detachably secured by wire loops b<1> and thumb-screws b<2>, the upper part a being recessed to receive a shallow tank c connected by branch pipes c<3> to a valve-controlled pipe c<2>, and provided with nozzles c<1> extending through holes b<3> in the lower part b carrying the bristles d. The pipe c<2> extends alongside the handle of the broom and is connected to a flexible hose leading to the source of water supply.
Patent GB-1536144-A (GB)
Title: Filter
IPC: B01D46/02
Filed: 1976-06-03
Abstract: 1536144 Gas filter TILGHMAN WHEELABRATOR Ltd 3 June 1976 [23 May 1975] 22977/75 Heading BIT A filter e.g. for gas having at least one tubular filter element 2 of textile fabric, the element being closed at a first end and open at the opposite or second end 32, wherein the first end is closed by a cap 10 having a continuous flange and the first end incorporates a resilient ring which braces the inserted first end around the inside surfaces of the flange. The cap closing the element has an annular projection or a plurality of spaced projections protruding inwardly of the flange beyond which the ring is seated to resist withdrawal of the filter element. The ring may be surrounded by a packing material. The filter elements may be cleaned by reverse flow air (e.g. through venturi nozzles) or they may be shaken.
Patent GB-277010-A (GB)
IPC: G05D16/06
Filed: 1927-09-01
Abstract: 277,010. Chicago Pneumatic Tool Co., (Assignees of Moody, J. C., and Hoffman, L. F.). Sept. 2, 1926, [Convention date]. Fluid-actitated valves.-A fluid-actuated cnntrol valve particularly adapted for controlling the unloading valves of air compressors comprises a disc valve member adapted to work between oppositely disposed seats and is provided with means to prevent fluid flowing through the control passage until the valve member has moved into engagement with the exhaust seat. The valve disc 8 has rounded edges 8a to make restricted contact with the surrounding wall and is normally held in contact with the smaller inlet seat 9 by the rounded end 12a of a spindle loaded by a spring 11 arranged between abutments 12<b>, 12<c>. The abutment 12c is adjusted by a screwed sleeve 13 loosely surrounding the spindle and operated by a handle 13a. The control passage 6 is connected to the space surrounding the seat 9 on the upper side of the valve by a passage 15 controlled by a spring-loaded ball valve 17 and is connected to the space surrounding the exhaust valve seat 10 on the lower side of the valve by a passage 14. The connecting passages are all formed in one part of the casing which is adjustably screwed to the other part so that the distance between the seats can be adjusted.
Patent GB-597740-A (GB)
Title: Improvements in and relating to rotary drums for screening slurry water
IPC: B01D33/067
Filed: 1945-09-06
Abstract: 597,740. Wet separating. DOMANIALE MIJN-MAATSCBAPPIJ, N. V., and TROMP, K. F. Sept. 6,1945, No. 23019. [Class 82 (ii)] A rotary drum for screening slurry water comprises in combination a spray pipe 7 situated above the drum and a conduit 8 for feeding the slurry water on to the inner face of the drum through the greater part thereof, said drum having an end wall 1 with a circular opening therein on the feed side only and being open to its full diameter on the discharge side 2, and has a gauze 4 fixed to the inside of longitudinal flat bars 3 by which it is supported thus ensuring an uninterrupted smooth screening surface extending throughout the entire circumference of the drum. The spray 7 serves to free the gauze 4 of intersticial deposits, and a further spray 15 may be interiorly spaced as shown if desired. The feed is fed to the sides of the drum interior via a tray or trays 10 and may decrease towards the discharge end, and the fines drain through the gauze into the trough 13. The drum may slope downwards towards the discharge end or may be conical, and may also be arranged in conjunction with a rotary bucket delivery wheel 21 and drum 25 of known type as shown in Fig. 3. Specification 9986/14, [Class 82 (ii)], is referred to.
Patent GB-255263-A (GB)
Title: Window-cleaning chair
IPC: A47L3/02
Filed: 1925-09-16
Abstract: 255,263. Kennedy, W. Sept. 16, 1925. Staging, window.-A window cleaning chair is supported on the sill and is provided with a depending projection C on the outer portion having inwardly projecting lugs 4 to contact with the outer surface of the wall and an adjustable pin E fitting into a central line of holes D for contact with the inner side of the sill, giving support at three points only. A handle F and a back rest B are also provided. The front of the seat is shaped to receive the legs of the person sitting.
Patent GB-262860-A (GB)
Title: Improvements in and relating to propellors
IPC: B63H1/12
Filed: 1925-09-16
Abstract: 262,860. Harper, A., and Harper, S. A. Sept. 16, 1925. Screw propellers.-Blades of screw propellers are attached to the boss at the forward end and are concave on the driving face with a reverse curve at the inner edges, the outer edges being at an increasing distance from the axis from front to rear. The two blades 6 are secured to the boss 1 at the forward ends and extend rearwardly almost parallel to the axis. The blades have a concave driving face with a small reverse curvature 10 along the inner edges. The distance across the tips 9, 9 is greatest at the far end. In forming the blades from a sheet, the centre rectangular portion 13 is cut away, the inner edges are bent oppositely to form the reverse curves and the main portion then bent oppositely out to the edges 16, 17.
Patent GB-522092-A (GB)
Title: Improvements relating to electric dry rectifiers
IPC: H01L21/108
Filed: 1939-08-10
Abstract: 522,092. Asymmetrically-conducting resistances. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 10, 1939, No. 23123. Convention date, Aug. 10, 1938. Drawings to Specification. [Class 37] The usual blocking layer of a selenium or like rectifier is reinforced by a thin discontinuous layer of non-conductive particles deposited as from a suspension in a vaporizable medium. The surface of the blocking layer may be rough. In examples, silicon dioxide is added from a suspension in alcohol to a normal selenide blocking layer or barium sulphate in amyl acetate or butyl acetate.