baber/WOPTO huggingface dataset:
Patent GB-1195188-A (GB)
Title: Improvements in or relating to Phase Measuring Circuit Arrangements.
IPC: H03M1/00
Filed: 1969-03-17
Abstract: 1,195,188. Phase comparators. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 17 March, 1969 [30 March, 1968], No. 13837/69. Heading H3A. A phase comparator comprises: a gate 9; means 3, 5, 7 and 4, 6, 8 for applying as control signals to the gate, two signals of the same frequency which are derived from the two signals 1, 2 whose phases are to be compared, and which open the gate for a period dependent on the phase difference; a counter 10 connected to the output of the gate; and means 11, 12, 13 for applying, as an input to the gate, signals which are derived from one of the two inputs 1, 2 and which are at a frequency having a predetermined multiple relationship with the frequency of the two gate control signals. The two control signals may be obtained by means of dividers 7, 8, alternatively the dividers may be omitted and a multiplier may be included in the gate input path 11, 12, 13, or in a third alterntive both dividers and a multiplier may be used.
Patent GB-778433-A (GB)
Title: Improvements in or relating to cold cathode electric discharge tubes
Inventor: BECK ARNOLD HUGH WILLIAM
IPC: H01J17/30
Filed: 1955-05-13
Abstract: 778,433. Cold-cathode tubes. STANDARD TELEPHONES & CABLES, Ltd. May 13, 1955, No. 13917/55. Addition to 734,345. Class 39(1). [Also in Group XL(c)] A cold cathode tube of the type described in the parent Specification comprises on the inside of the envelope a conductive coating which is contacted by a resilient metal ring, and the statistical delay of firing is eliminated by a steady sub-normal auxiliary discharge passing between the said coating or the ring or a lead connected thereto and one of the anode leads. The coating also serves to control the potential at the inner wall of the tube envelope. The tube shown comprises a molybdenum plate cathode 4 mounted on a lead 7 which is surrounded above the press 2 by a glass bead 8 sealed into the press and, immediately below the cathode plate, by a glass sleeve 9. Two pairs of rod anodes 5 and 6, each formed of a single length of rod bent into a U are mounted on a respective lead 3, the rods of each pair being disposed symmetrically one on each side of the cathode plate. A lead 12 is connected to a ring 11 which is a spring fit against a coating 10 of silver provided on the inner wall of the envelope 1. After processing the tube a film of molybdenum forms over the envelope wall and contacts the coating 10 and ring 11. The cathode and anode rod system is mounted slightly eccentrically with respect to the longitudinal axis of the envelope 1 so that the priming discharge takes place between the ring 11 and the lead 3 connected to anode rods 6, in preference to the lead 3 connected to anode rods 5. A graph of the voltage-current characteristic of the priming gap is given and the operating point is chosen to be well in the subnormal discharge region. The gas filling consists of helium at a pressure of 60 mm. of mercury. Two of the tubes are connected in a coincidence circuit (see Group XL(c)) similar to that described in the parent Specification.
Patent GB-1376954-A (GB)
Title: Line amplifier
IPC: H03G1/00
Filed: 1972-03-24
Abstract: 1376954 Repeater amplifiers, automatic gain control PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 24 March1972 [27 March 1971] 13918/72 Heading H4R A multistage transistor amplifier used as a line amplifier has local feedback circuits provided for some of the stages by means of variable capacitance two terminal networks which include varactor diodes controlled by a voltage derived from a pilot signal sent down the line. In the amplifier shown a three stage transistor amplifier has feedback circuits 18, 24 connected in the emitter circuits of transistors 13, 15 forming the first and third stages. An overall feedback circuit comprising capacitor 28 and resistor 29 is also provided. Each local feedback circuit includes a variable capacitor provided by pushpull connected pairs of varactor diodes 31, 32; 33, 34; 35, 36. The pairs of varactor diodes are connected through resistors 56, 57, 58 to a control voltage distribution network 37 which is supplied from a pilot voltage signal receiver 30 connected to the output of the line amplifier. The use of a frequency modulated pilot signal to generate a variable control voltage in receiver 30 is described in Specifications 1,078,945 and 1,078,947.
Patent GB-1527064-A (GB)
Title: Time switch
IPC: G04C23/16
Filed: 1977-04-04
Abstract: 1527064 Interval timers DIEHL 4 April 1977 [13 April 1976] 14054/77 Heading G3T [Also in Division H1] A time switch for control of an electric cooker, for example, and which also gives an optical or acoustic alarm has an expanded time scale for greater accuracy of short time intervals or the final minutes of a relatively long switched-on duration. A rotary member 30, which has cam tracks 40 and 41 for operation of respective control and alarm contacts 44 and 45, is set by means of a knob (70), Figs. 1 and 2 (not shown) connected to gear 57, thereby opening contacts 45 and closing contacts 44. A synchronous motor (5) then drives a shaft 9 to rotate member 30 in the direction of arrow 62 by means of pinion teeth 54 engaging teeth 38 on member 30 until only a short time (as shown, ten minutes) has to elapse, at which point pinion teeth 53 engage teeth 36 to rotate member 30 at a higher speed. The shaft 9 also drives clock hands (17, 23) via gear train 13, 14, 15, part of which is used to give a slow speed drive to the teeth 54 which are on a gear loosely journalled about shaft 9. The shaft 9 is swingable away from member 30 against action of a spring (51) to allow ratchetting of teeth 36, 38 when setting member 30. In a modification Figs. 2 and 4 to 8, (not shown) the slow speed teeth 54 are replaced by a cardioid member (68) directly driven on shaft 9.
Patent GB-557152-A (GB)
Title: Improved method of roof glazing without putty
IPC: E04D3/08
Filed: 1942-10-07
Abstract: 557,152. Glazing roofs. PINN, E. L., and RATTENBURY, J. C. Oct. 7, 1942, No. 14103. [Class 20 (iii)] The glass panes are supported at their edges on the roof bars 6, channels 4, 5 to run off water being cut on the ledges 2 on which the panes rest, and wooden beads 7 of triangular crosssection are secured to the bars to retain the panes in position. The top edge of the top pane is inserted in a groove 8 in the cross bar 9 and a thin flat bead 10 is laid on the glass in contact with the cross bar to prevent entry of water into the groove.
Patent GB-311186-A (GB)
IPC: G01S1/02
Filed: 1929-05-06
Abstract: 311,186. Telefunken Ges. fiir Drahtlose Telegraphie. May 5, 1928, [Convention date]. Directive signalling.-The rotating loop aerial of a directional installation for a ship or for aircraft is directly coupled to the compass, so as to avoid re-setting in the critical direction as the vessel yaws or falls away from her course. The shaft l of the frame aerial is keyed to the handwheel g by a fork e. The hand-wheel is in turn frictionally mounted on the compass body b, or on a part rotated thereby, say through a repeater c, so that the compass and loop aerial move together once the latter has been set in the desired azimuth. The arrangement may be combined with means for automatically compensating for quadrantal error. Tap-keys j and a rotatable tap-ring k prevent the leads to the amplifier from being torn away from the rotating aerial. The direction can be read off from a scale h on the compass dial, or from a scale h<1> on a member a fixed to the vessel.
Patent GB-972079-A (GB)
Title: Electronic pulse-generating circuit arrangements
Inventor: DARKE JAMES ANTHONY
IPC: H02M1/08
Filed: 1961-04-19
Abstract: 972,079. Transistor pulse circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 15, 1962 [April 19, 1961], No. 14147/61. Heading H3T. A circuit for producing a pulse at the time of onset of an input pulse and a further pulse of the same polarity at the time of offset of the input pulse comprises a transistor TR2 having resistors R5, R6 in the emitter and collector circuits, the base being overdriven by the input pulse beyond the condition at which the base voltage becomes equal to the collector voltage. As described, the 50 c/s. output of transformer T1 is fed via an adjustable phase shifting circuit comprising resistors RV1, R2, and capacitors C2, C3, to a clipping circuit comprising diode D3 and transistor TR1. Positive half-cycles are clipped by D3 and negative half-cycles limited by TR1 so that the collector waveform of TR1 consists of positive-going pulses, the duration of which is equal to a halfcycle of the input sine wave. It is shown that when the NPN transistor TR2 is driven beyond the saturation point by these pulses the polarity of the collector waveform is reversed so that a negative-going pulse is generated each time the base current passes through the saturation point. The transistor TR3 and diode D4 are rendered conductive by each pulse from TR2 so that an amplified pulse is fed to the trigger electrode of a controlled semi-conductor rectifier (not shown), connected in series with the unsmoothed output of a full-wave rectifier. The output of the rectifier (not shown) is thus dependent on the timing of the control pulses and is hence adjustable by variable resistor RV1. The duration of the pulse fed to TR2 may be increased by a capacitor connected across the input of TR1, or by biasing the base of TR1. The D.C. supply to the circuit is provided by full wave rectifiers D1, D2 and stabilized by a Zener diode Z1.
Patent GB-758649-A (GB)
Title: Improvements in and relating to settees or armchairs which are convertible into beds
IPC: A47C17/18
Filed: 1953-05-31
Abstract: 758,649. Bed-settees. COMPTON, G. P. Aug. 31, 1954 [May 31, 1953 ; Dec. 11, 1953], Nos. 14184/53 and 34612/53. Class 52(2). A bed settee has a back 14 and seat 10 of equal length lying between arms 12 carried by hinges 20, the back being hinged to the frame 16 and the seat having runners 22 slidable in grooves 24 in the frame so that the parts can be set and supported in the same plane with the two arms turned down inwards to lie side by side between the back and the seat. Bedclothes may be stored within frame 16.
Patent GB-560476-A (GB)
Title: Improvements in or relating to extrusion machines
IPC: B29C48/285
Filed: 1942-10-09
Abstract: 560,476. Extrusion machines. HENLEY'S TELEGRAPH WORKS, CO., Ltd., W. T., and GRIFFITHS, F. T. Oct. 9, 1942, No. 14213. [Class 87 (ii)]' In an extrusion machine of the kind having a pair of driven feed rolls which deliver material into a feed chamber having an outlet leading to the feed opening of a screw thread impelling device, the chamber can be readily removed to give access to the delivery side of the rolls and to the interior of the feed chamber, e.g. for cleaning purposes. The invention is described in connection with the machine described in Specification 559,153, which machine has four screw thread impelling devices 9 arranged as two aligned pairs delivering to a single die, the two devices of each pair being joined at their delivery ends. There is a feed chamber at each end of the machine, and each chamber is constituted by a hollow block 39 which is slidably positioned in a passage 36 formed in an end block 1 which supports the screw devices. The feed chamber is normally held in position as shown by a pivoted lever 44, and to remove the chamber the lever is released and a four-legged table 66 is used ; this table has a cup 69 which may be screwed on to a boss 70 on the chamber, whereupon rotation of a screw 68 pulls the chamber out. Details :-The sides of the rolls 25 are enclosed by plates 47, 48. To render the machine capable of extruding parti-coloured products by feeding differently-coloured stocks to the upper and lower screws 9, central division plates may be located around the rolls and between the ends thereof, the division plate at the delivery sides of the rolls being twisted as shown in Fig. 5 and being adjustable in position by rotating a screw 60 which bears upon the head 59 of the plate. The flow of material to the screws through the feed passages 38 may be regulated by varying the cross-sectional area of the passages by moving plugs 65. Material may be pressed into the bite of the rolls by movable hopper walls constituted by pivoted plates urged by spring-actuated cranks, the plates being held away from the rolls by means of a handle when the hopper is to be filled, Fig. 4 (not shown).
Patent GB-333247-A (GB)
Title: Improvements in or relating to electric resistances
IPC: H01C3/00
Filed: 1929-05-07
Abstract: 333,247. General Electric Co., Ltd., and Bird, H. May 7, 1929. Grid resistances. - A resistance element is formed from a plate 1 by pressing a spiral split 7 in it and moving the centre portion 3 out of the plane of the remainder of the plate. For mounting into a bank insulated rods are passed through the holes 2, 3, 4, each plate being separated from neighbouring plates by insulating washers 27, 29 or by metal collars 28, these being arranged to place the plates either in series or in paralled. Some plates have extensions 12 formed with holes 5 for connecting conductors to the bank.
Patent GB-130571-A (GB)
Title: Improvements in or relating to Chucks for Screw Cutting Machines.
Inventor: WADE HAROLD
IPC: B23G7/00
Filed: 1919-06-04
Abstract: 130,571. Wade, H., (Borach, R.). June 4,1919. Chucks.-In a hollow-spindle cam-closing chuck for holding screws, especially wood-screws, the draw spindle 4, Fig. 1, rotates a sleeve 10 by means of cam slots 11 engaged by a crosspin S carried by the spindle 4. Projections 12, Fig. 5, on the inside of the sleeve 10 thereupon close the jaws 13 by acting on cam surfaces 14. By moving the draw spindle in the opposite direction, the jaws 13 are pushed apart by the action of a coned part of the spindle 4, as shown in Fig. 2.
Patent GB-238834-A (GB)
Title: Improvements in expanding reamers
IPC: B23B29/034
Filed: 1925-06-02
Abstract: 238,834. Brown & Sons (Huddersfield), Ltd., D., and Welsby, S. June 2, 1925. Reamers. - In a reamer having floating cutters, the cutters b<1>, c<1>, are adjusted against spring pressure, d, d<1>, by a micrometer screw c<2> mounted in one cutter and abutting against the opposite cutter. The screw has a pinion c<3> engaging a pinion g on a sleeve h, the latter being adapted to be clamped between a nut j and the graduated head i<1> of a spindle i so as to be rotatable with the latter for adjustment purposes. The spindle head can be independently returned to the zero position without affecting the setting of the cutters by slackening the nut j.
Patent GB-348377-A (GB)
Title: Improvements in or relating to portiere rods
IPC: A47H1/022
Filed: 1930-05-09
Abstract: 348,377. PortiÞre rods. LOVELL, J., 5, Balfour Street, Balsall Heath, Birming- ham. May 9, 1930, No. 14375. [Class 52 (v).] In a portiÞre rod arrangement of the type in which one end of the rod 2 pivots on a bracket 1 secured to the door &c. frame and is pivoted at the other end to an arm 13 pivoted to the door &c. 30 so that the rod is raised when the door &c. is opened, the arm 13 is formed of strip or sheet metal. The attachment plate 18 is preferably a sheet metal pressing with a cup-shaped central portion to receive the head of the pivot 17 and is provided with a pressed-out stop 22 to limit the movement of the arm 13. The upper end of the arm 13 carries a pivoted band-clip 23 to engage the rod 2. The bracket 1 may also be made of sheet or strip metal and carries a threaded pin upon which the rod pivots. The thread may be formed by a pressing operation. In a modification the rod may carry a band-clip which pivots on the pin. The arm 13 and bracket 1 may be pressed to a shallow channel section and may have one or more strengthening ribs.
Patent GB-501434-A (GB)
Title: Weft bobbin change device, for multi-colour automatic looms with stationary bobbin magazines
IPC: D03D45/20
Filed: 1937-05-24
Abstract: 501,434. Looms with automatic weft replenishment. MASCHINENFABRIK RUTI VORM. C . HONEGGER. May 24, 1937, No. 14385. Void. Convention date, June 3, 1936. [Class 142 (iii)] In multicolor looms with stationary bobbin magazines the cell closing flaps 2 are closed and opened by chains 4 secured to eccentric or concentric discs 3 on the flaps and connected to springs 6, 7. The springs 6 are anchored to the magazine, and the springs 7 are connected to a hook 8 engageable by a pull knife 9 for opening the flap. Damage in case of jamming is thus prevented. In addition to the usual discharge flap 14, a member 10 is used having a springy rear wall for the feed opening 11. The member 10 is rockably mounted at 12 and is acted upon by a spring 13.
Patent GB-1129925-A (GB)
Title: Improvements in or relating to rear projection screens
Inventor: HARKNESS THOMAS SMITH
IPC: G03B21/60
Filed: 1966-03-31
Abstract: 1,129,925. Projection screens. ANDREW SMITH HARKNESS Ltd. March 30, 1967 [March 31, 1966], No. 14396/66. Heading G2J. [Also in Division B2] A rear projection screen for receiving 3-D image pairs in polarized light consists of a transparent glass or plastics sheet coated with a suspension of silica aerogel particles in clear lacquer. The particles have a diameter of between 25 and 35 ŠU, and a separation of 300 ŠU and the lacquer may be cellulose or P.V.C.
Patent GB-1057184-A (GB)
Title: Improvements in or relating to grinding devices
IPC: B24B3/54
Filed: 1964-04-08
Abstract: 1,057,184. Grinding. PHILIPS GLOEILAMPENFABBIEKEN N.V. April 8, 1964 [April 1. 1963], No. 14489/64. Heading B3D. A device for grinding knives, scissors or similar tools comprises a grinding wheel 3 which has an end face forming a grinding surface, is axially depressable against the action of a spring 7, and forms part of the bottom of a trough, the walls la, 1 of which form supporting surfaces for the tools to be ground and are separated from the grinding wheel by a ventilating gap 4. The walls 1a, 1b are formed on a support 1 having a circular aperture for the grinding wheel 3 which is secured to the upper surface of a cup-shaped member 6 abutted by one end of the spring 7. The member is slidable on a lower cup-shaped member 9 forming an abutment for the other end of the spring and secured to a driving shaft 10 in a bearing 13. The side wall of the member 6 is formed with helical fan blades to produce an air current passing through the gap 4. In operation, the tool to be ground is placed on one or other of the surfaces 1a, 1b and moved to depress the grinding wheel against the spring 7, the bottom of the groove determining the maximum grinding pressure. In another embodiment, the grinding wheel is supported on an outwardly extending flange of the member 6 and centred by a projection on the member, and the fan blades are formed on a sleeve-like member shrunk on to the member 6.
Patent GB-1016633-A (GB)
Title: An improved emergency brake for motor driven vehicles
IPC: F16D55/224
Filed: 1963-04-11
Abstract: 1,016,633. Motor vehicle brake arrangements. T. Q. McGAWN. July 2, 1964 [April 11, 1963], No. 14630/63. Heading B7H. [Also in Division F2] An emergency brake is provided in a motor driven vehicle and comprises a disc 12 secured to rotate with the differential side of the universal coupling connecting a propeller shaft 11 to a differential a pair of opposed brake blocks 19 supported by brackets 14, 15 secured to the differential casing 10 and means operable by the driver for applying the brake. The brackets 14, 15 are bolted to an anchor plate 13 secured to the front of the differential casing and each bracket carries opposed blocks 19 connected to a plunger head 18b by a T and T-slot 19d, 19e and withdrawable radially outwardly for replacement. Each bracket has a cylinder 16, 17 bolted thereto which screw-threadably carries a plunger 18 therein that is connected to levers 20, 21. A threaded pin in the plunger operatively connects the plunger 18 and head 18b and permits adjustment of the blocks relative to the disc. The levers 20, 21 are pivotally interconnected by members 24, 24a. A balance bar 26 pivotally connected to an operating cable 29 and to links 27 which are pivotally connected at 27a to the member 24, 24a interconnects the latter members. When the cable 29 is operated the levers 20, 21 are rotated which in turn rotates the plungers 18 to cause them to move axially and so apply the blocks 19 to the opposite sides of the disc. Return springs 31 are connected between the balance bar 26 and a fixed bar 30. Alternatively the brake blocks may be actuated hydraulically or pneumatically.
Patent GB-576313-A (GB)
Title: Improvements in continuous metal strip electrolytic tinning lines
IPC: B65H23/16
Filed: 1943-09-06
Abstract: 576,313. Strip coating lines. CARNEGIEILLINOIS STEEL CORPORATION. Sept. 6, 1943, No. 14557. Convention date, May 24. [Class 41] In a continuous strip coating line, in order to prevent risk of fracture of the strip due to sudden acceleration of the driving means, and to take up slack, the strip is passed over a roll 6 located near the site of the drivebridle, Fig 1 (not shown), the bearing-box 8 of the roll being slidable in U-shaped guides 10, against the action of a spring 18, and apertured to receive bolts carrying nuts 20 for limiting its upward movement. The Specification refers also to replacing the springs by counterweights or compression cylinders.
Patent GB-1300491-A (GB)
Title: A tyre stud and method of making the same
IPC: B60C11/16
Filed: 1971-05-13
Abstract: 1300491 Tyre anti-skid studs PERMANENCE CORP 13 May 1971 [15 May 1970] 14632/71 Heading B7C [Also in Division C7] A tyre stud comprises a metal shank 12, e.g. steel with a head 14 and a cavity 18 filled with sintered carbide particles, e.g. WC-Co bonded by a filler metal, e.g. Cu, Ni or Cu-Ni alloy. The studs are made by inserting the shanks into moulds 30, filling the cavity with WC-Co and the filler metal and heating to melt the filler metal which bonds the carbide to the steel shank. The studs are used for pneumatic snow tyres.