baber/WOPTO huggingface dataset:
Patent GB-1432189-A (GB)
Title: Stabilized solid-state oscillator
IPC: H03L7/04
Filed: 1973-08-22
Abstract: 1432189 AFC of solid state oscillators HITACHI Ltd 22 Aug 1973 [25 Aug 1972] 39838/73 Headings H3A and H3T A stabilized solid state oscillator comprises a free-running solid state oscillator element 21, Fig. 2, an output line 210, a fundamental resonator 211 connected to the output line for stabilizing the oscillation frequency of the free-running oscillator, a phase detector 213, 214 coupled to the output line at a position between the freerunning oscillator and the resonator and an AFC circuit to which the output of the phase detector means is applied. In Fig. 2 the phase detector 213, 214 is positioned symmetrically about a point where the amplitude of the standing wave is minimum and detects phase variations of the standing wave due to variations in the oscillation frequency of the free-running oscillator 21 in the form of amplitude variations of the standing wave. As shown in Fig. 2 diode detectors 213 and 214 are located #/8 on both sides of the point where the standing wave voltage is a minimum which is #/4 from a coupling hole 212. The signal resulting from the outputs of the diode detectors 213, 214 is amplified by the AFC circuit and red to a varactor diode 26 to minimize the deflection of the oscillation frequency. The cavity resonator 211 is of metal and may have its interior plated with silver. The cavity resonator may be replaced by a dielectric or magnetic material with a high Q and low temperature coefficient used as the fundamental resonator. If a Gunn element or avalanche diode such as an Imputt element is used as the oscillator element the means for adjusting the freerunning oscillator to resonance may be achieved by directly changing the bias voltage or current to the Gunn element or avalanche diode. In a modification, Fig. 4, including the fundamental cavity resonator 311 coupled to the output line 310 and a free-running solid state oscillator 38 a phase detector 320 is coupled to the output line 310 by a directional coupler 317. The incident and reflected waves are fed via a variable attenuator 318 and a phase shifter 319 respectively to the phase detector so that phase variation of the reflected wave is directly detected for stabilization of oscillation frequency. The phase detector 320 includes a hybrid circuit equivalent to a directional coupler and detecting diodes 322, 323. The outputs from these diodes are applied to the AFC circuit 315 to control the oscillator 38 as described above. The phase shifter 319 and variable attenuator 318 may be omitted. The oscillator used may be a transistor or solid state oscillator with a given negative resistance. The waveguide employed in the embodiment may be replaced by a coaxial or strip line. Applications of solid state oscillators mentioned are communication equipment and radars.
Patent GB-1438843-A (GB)
Title: Cryosurgical device
IPC: A61F9/007
Filed: 1973-08-22
Abstract: 1438843 Refrigeration FRIGITRONICS OF CONN Inc 22 Aug 1973 [12 Sept 1972] 39869/73 Heading F4H [Also in Division A5] A cryosurgical device comprises an elongated sealed container 20 terminating at one end in a heat conducting tip 32, a liquefied refrigerant 51 partially filling the container 20 and being under superatmospheric pressure therein, an insulating housing 10a, 10b, 10c enclosing the container 20 and exposing the tip 32, and means for venting the container 20 to atmosphere to boil off the refrigerant 51 and cool the tip 32. The housing is further insulated by an air gap 36 around it. A cap 26 is crimped over the other end of the container 20 and seals a rubber diaphragm (30), Fig. 3 (not shown). A plunger 38 is mounted in the housing part 10a and carries a hollow needle 44. Depressing the plunger 38 pushes the needle 44 through a hole (28) in the cap 26 and the diaphragm (30) and the refrigerant 51 excapes through the needle 44, a hole 46 therein, porous packing 47 in the housing part 10a and holes 13, and cools the tip 32. Alternatively, a diaphragm (50), Fig. 4 (not shown) having a central enlargement (56) and an eccentric vent (60) is used. A plunger (64) is used to push the enlargement (56) inwardly so that the refrigerant (51) may escape through the vent (60). The plunger (64) has a detent (66) for engaging a shoulder (68) to retain the valve in the open position. A retractible ball-point pen type mechanism may alternatively be used to operate the plunger (64).
Patent GB-1439988-A (GB)
Title: Turbojet engine
IPC: F02C6/20
Filed: 1973-08-22
Abstract: 1439988 Driving helicopter rotors MOTOREN UND TURBINEN-UNION MUNCHEN GmbH 22 Aug 1973 [26 Aug 1972] 39890/73 Heading B7G [Also in Division F1] The invention relates to a gas turbine engine of the ducted fan type in which a separate power turbine is provided and which is connected through gearing to drive a helicopter lift rotor, control means being provided whereby gases may be directed either to the turbine driving the ducted fan so giving forward thrust, or to the power turbine driving the lift rotor so giving vertical lift. The engine shown in Fig. 1 comprises a fan 1, HP compressor 2, combustion equipment 4, HP turbine 5 which drives the HP compressor 2 through outer shaft 11, LP turbine 6 which drives the fan through shaft 7, also a separate power turbine 19. The fan rotor comprises pivotally mounted blades 13 disposed within the fan duct and fixed blades 17 mounted within the inlet duct to the HP compressor. Pivotally-mounted inlet guide vanes 25 are provided for the LP turbine and pivotallymounted inlet guide vanes 26 for the power turbine 19. A series of pivotally-mounted flaps 26<SP>1</SP> are disposed adjacent the IGV's 25 such that when the flaps are in the outer position gases discharging from the HP turbine are directed to the LP turbine 6 which drives the ducted fan 1, the gases then discharging through the passage 27 to the propulsion nozzle 18; thus in this mode the engine provides forward thrust. When the flaps 26<SP>1</SP> are moved to their inner position the gases from the HP turbine are prevented from passing to the LP turbine, thus the ducted fan is not driven; instead the gases pass through the passage 28 through the IGV's 26 on to the power turbine 19 which is thereby driven and acts to drive the lift rotor 23 through gearing 21; thus in this mode the engine provides vertical lift. The controls are arranged to provide smooth transition from vertical to forward thrust and vice versa. In a second embodiment in place of the pivoted flaps 26<SP>1</SP> and IGV's 25, 26, two axially-slidable ring valves are provided which permit gas flow from the HP turbine either through the LP turbine to drive the ducted fan or through the power turbine to drive the lift rotor. The blades of the lift rotor are of variable pitch, the pitch being increased as the pitch of the fan blades is reduced, and vice versa.
Patent GB-1536294-A (GB)
Title: Magnetic bubble lattice propagation
IPC: G11C11/14
Filed: 1976-09-28
Abstract: 1536294 Magnetic bubble lattice propagation INTERNATIONAL BUSINESS MACHINES CORP 28 Sept 1976 [31 Dec 1975] 40115/76 Heading H3B A magnetic bubble lattice is driven by cooperation of an in-plane magnetic field and an array of chevron elements. The elements may each be associated with bubbles in more than one column and/or row and the magnetic poles established in them may drive the same bubbles through successive field cycles whilst the others move by bubble-bubble interaction, or the active bubbles may alternate, depending on the element configuration and spacing.
Patent GB-1017169-A (GB)
Title: A collet nose for collecting and automatically releasing preliminary windings
IPC: B65H54/86
Filed: 1964-10-02
Abstract: 1,017,169. Collets for winding filaments. INDUSTRIAL DEVICES Inc. Oct. 2, 1964 [Oct, 4, 1963J, No. 40159/64. Heading D1J. [Also in Division F2] To facilitate the removal of preliminary waste winding, as when winding glass filaments, the collet 12 is fitted with a nose 10 carrying an annular resilient ring 34. During the winding of the preliminary waste yarn the ring 34 expands radially and at the completion of the main winding when rotation is stopped the ring 34 shrinks to its original diameter to permit easy removal of the waste yarn. As shown in Fig. 3 shoulder portions 30, 32 prevent disengagement of the ring 34 and spaced metal segments 40 prevent "humping". In Fig. 5 (not shown) the ring has a plurality of pins 54 extending through it in the axial direction of the collet, these pins preventing "humping" and project at each end into radial slots having closed ends to prevent disengagement of the ring. In a further modification, Fig. 7 (not shown) the exterior surface of the ring is tapered but is adapted to flex to cylindrical shape on rotation.
Patent GB-979443-A (GB)
Title: An adjustable compound spring element
Inventor: MEIER PETER
IPC: B60G11/58
Filed: 1961-11-10
Abstract: 979,443. Springs. MASCHINENFABRIK AUGSBURG - NURNBERG A.G. Nov. 10, 1961, No. 40291/61. Heading F2S. An adjustably - precompressible compound spring for vehicle suspensions comprising a helical spring 3 and a rubber compression spring 4 is characterized in that the bearing plates of the helical and the rubber spring are relatively adjustable at least at one end of the compound spring. As shown, the upper bearing plates 5, 6 for the springs 3, 4 respectively are secured to the sprung part 1 of a vehicle and the lower bearing plate 7 for the helical spring 3, which is secured to an unsprung vehicle part 2, carries a bush 8 which is also fitted into the vehicle part 2. The spring 4, in two parts separated by a plate 12, has a lower bearing plate 11 which non-rotatively engages a pin 10 which is axially adjustable within the bush 8 by means of a screw 9 which works in the bottom end of the bush 8. The position of the screw 9 determines the degree of precompression of the rubber spring 4. Bores are provided in the separating plate 12, the pin 10, and the screw 9, to vent the hollow spring 4. Relativelyadjustable bearing plates may be incorporated at the upper end of the compound spring.
Patent GB-1008681-A (GB)
Title: Improvements in and relating to brush holders for dynamo-electric machines
Inventor: MACQUIRE-COOPER RICHARD TERENC
IPC: H01R39/38
Filed: 1963-04-26
Abstract: 1,008,681. Brush holders for dynamo electric machines. MORGAN COMPONENTS Ltd. July 22, 1964 [April 26, 1963], No. 40637/62. Heading H2A. Spring pressure is exerted on a carbon brush in a brush holder by a resilient member made of an elastomeric fluorocarbon synthetic resin, preferably " Viton " (Trade Mark). The resilient strip may be anchored to the holder and the free end secured to the brush under tension, or the strip may for a U-shaped loop with the bend around the top of the brush. The anchorages may allow the tension in the strip to be altered or alternatively an adjustable stirrup may be used to press on the brush. As shown, an endless loop of resilient strip passes around guides 25 and presses against the brushes which are in holders 20 and this arrangement may be modified for a plurality of brushes. In a further modification, a simple lever bears on the brush and has at its other end a part of the resilient material either in tension or compression.
Patent GB-1533470-A (GB)
Title: Sensor-assemblies for engines
IPC: G01K1/14
Filed: 1976-09-30
Abstract: 1533470 Sensor assemblies SMITHS INDUSTRIES Ltd 29 Sept 1977 [30 Sept 1976] 40698/76 Heading H1K In a sensor assembly for use in an engine the sensors 2-6 (e.g. thermocouples, thermistors or gas-pressure detectors) are mounted about a central hub 1 and are electrically interconnected via a plurality of concentric conductive rings 14-17 within the hub 1. Where, as shown, each sensor contains two thermocouplers each of the four wires emerging from a sensor is connected to one of the rings 14-17 of the same metal as itself.
Patent GB-962716-A (GB)
Title: Apparatus for the treatment of disturbances in the circulation of blood and various forms of rheumatic diseases of the upper and lower limbs of the human body
IPC: A61F7/02
Filed: 1962-10-29
Abstract: 962,716. Treatment chambers. W. WERDING. Oct. 29, 1962 [Nov. 2, 1961], No. 40797/62. Heading A5R. An apparatus for treating a limb comprises a chamber to receive the limb and having an aperture through which the limb is inserted, the aperture being provided with an inflatable closure means. Adjustable controlling means determine the pressure in the chamber, the pressure in the closure and the temperature in the chamber. The chamber 1 is shown provided with a removable end cover 6 which is selected to have the desired size of entry connection 7 but in each case the connection has an inflatable cuff 8 to ensure an air-tight seal around the limb. The opposite end wall 2 carries a thermostat 3, a fan 4 and a heating or cooling coil 5. Air pressure is supplied to the closure means 8 from a pump 9 under the control of a pressure regulator 15 which actuates electrically-operated valves 12, 19 to effect the air admission to or release from the device 8. Hand-controlled throttles 14, 18 determine the rate of flow of air in either direction. Similar devices are provided for controlling the air supply to the chamber 1 but in this case the connecting pipe 22 may additionally be coupled to the intake side of the pump 9 to give a rarefaction in the chamber 1 when desired. Automatic timing means 35, 36 determine the length of the treatment.
Patent GB-1445976-A (GB)
Title: Electrical light units
IPC: B60Q3/02
Filed: 1972-09-02
Abstract: 1445976 Lighting fittings RISTS WIRES & CABLES Ltd 21 Aug 1973 [2 Sept 1972] 40798/72 Heading F4R [Also in Divisions H1 and H2] A light unit for use as an interior light in a motor vehicle comprises a body 10 on which is mounted a bulb holder 31, a rotor 20 pivotable about an axis A on a rivet 21, and a contact 26 movable with the rotor 20 and having a portion 27 which, in use, abuts against a bulb supported by the bulb holder 31, the portion 27 being disposed on the axis A so as to remain in abutment with the lamp during movement of the rotor and contact between positions in which the contact makes or breaks a circuit connection with a terminal to energize the bulb. The body 10 is made of a translucent material with a light-transmitting lens 11 and integrally formed supports 12 at each end, one of which supports the rotor 20. Each support 12 mounts a spring- loaded catch 15 and an inwardly facing cupshaped member 16 of one of the catches 15 engages one of three recesses 23, Fig. 5, in the rotor 20 to provide a detent mechanism therefor. With the rotor in its central disposition the lighting unit is inoperative, however in either of its extreme positions a terminal engaging portion 28 of the movable contact 26 engages one of a respective pair of terminals (one of which is shown at 29). In a further embodiment an alternative catch arrangement is provided. A spring clip 32 connected on support 31 to terminal 34 mounts the bulb, which may be of bayonet, festoon or screw cap type.
Patent GB-1343390-A (GB)
Title: Floor cleaning appliances
IPC: A47L11/33
Filed: 1972-09-04
Abstract: 1343390 Carpet sweepers; suction cleaners; brushes with brass bristles PELOX-CHEMIETECHNIK GmbH & CO KG 4 Sept 1972 [26 April 1972] 40856/72 Headings A4F and A4K A floor cleaning appliance, e.g. a carpet sweeper or a suction cleaner nozzle, has at least one brush comprising brass bristles each having a diameter in the range of 0À7 to 0À13mm. The bristles may be wavy or straight and are preferably of brass having two parts by weight of copper to one part by weight of zinc. A carpet sweeper brush may comprise a wooden base member having uniformly distributed holes at a density of 4 holes per sq. cm. and each receiving 350 brass bristles.
Patent GB-1130209-A (GB)
Title: Improvements to m.t.i. radars
Inventor: DASSE-HARTAUT HENRI MARIE JOSE
IPC: G01S13/53
Filed: 1966-09-13
Abstract: 1,130,209. Pulse radar. INTERNATIONAL STANDARD ELECTRIC CORP. 13 Sept., 1966, No. 40878/66. Heading H4D. In a pulse Doppler radar utilizing a coherent oscillator 6 phase - locked to the carrier frequency of the output of pulse transmitter 1 at each repetition period, the outputs of mixers 7, 8 are fed to a phase detector 11, the output of mixer 8 being subjected in unit 10 to a phase shift varying linearly with time (i.e. a corresponding frequency shift F o ), and the phase detector output is fed via a range gate 12 to a filter 13 having two pass bands one of which is the frequency range F o  - F m  to F o  - FM and the other of which is the frequency range F o  + F m  to F o  + F M  where F m  and FM are the Doppler frequency shifts corresponding to the slowest and fastest targets of interest respectively. The output of filter 13 passes to a loudspeaker 15 and, via a frequency discriminator 17 centred on frequency P o , to a centre-zero meter 18. Phase shifter 10 may use multiple mixing, Fig. 3 (not shown).
Patent GB-927088-A (GB)
Title: Engraving apparatus
IPC: B41C1/04
Filed: 1960-11-29
Abstract: 927,088. Copying by scanning. ANCIENNE MAISON TURQUETIL. Nov. 29, 1960 [Nov. 30, 1959 (2); Oct. 27, 1960], No. 40968/60. Class 40 (3). In apparatus for producing from a master pattern a corresponding engraved pattern on a work surface by means of a cutter tool operable to a working position or a retracted position under control of the output of photo-electric cell of a scanner device comprising an optical system for directing a light beam from the master pattern to the photo-electric cell, a diaphragm screen interposed in the path of the light beam has at least one pair of spaced apertures displaced generally in the scanning direction and functioning so that during the scanning of the master pattern the output of the cell will assume at least three different magnitudes in dependence on the number of said apertures which are obscured by a dark area of the master pattern and means for operating the tool between its said positions as said output alters between two selected ones of said values. The arrangement is intended to eliminate or reduce the distortion of the areas of cut-away or non-recessed areas of the engraved plate due to the finite transverse dimensions of the cutting tool. As indicated by Fig. 4 an area or a movable pattern 11 is focused by a lens 13 on to the area of a diaphragm 14 having two apertures 15, 16 displaced in the direction 12 of scanning movement of the pattern. When, for example, a dark portion of the pattern 11 enters the scanning zone, light initially passing through both apertures 15, 16 to the cell 18 is cut off or reduced firstly at the aperture 15, and subsequently at the aperture 6 giving rise to photocell outputs of the form shown at the intervals 21, 22, 23 of Fig. 6, and the output then increasing as light firstly passes through aperture 15 and then additionally through aperture 16 giving rise to outputs as exemplified by intervals 24, 25. If the process is such that the dark areas are to stand out in relief on the engraved plate, the cell output is connected to a reverser relay arrangement, Fig. 10 (not shown), to operate when the output falls to the intermediate value, e.g. at period 22, and to operate electromagnetic means to withdraw the cutting tool from engagement with the work surface. If the apparatus is applied to an intaglio engraving process in which the printing areas correspond to the recessed areas of the engraving, the reverser relay is connected to operate at the transition from the intermediate level 22 to the lower level 23 and again to operate at the beginning of the interval 24. The screen 14 may have a second pair of apertures duplicating the apertures 15, 16 to deal with portions of the master pattern which do not lie at right angles to the general scanning direction. An electromagnetic actuating arrangement for a constantly rotating cutting tool comprises two bar magnets attached to a bracket supporting the tool and moved by electromagnets appropriately energized under control of the reverser relay, and is described in connection with Figs. 8, 9 (not shown).
Patent GB-909135-A (GB)
Title: Improvements in winch-dyeing machinery
Inventor: FRANCE EDWARD
IPC: D06B23/00
Filed: 1958-12-19
Abstract: 909,135. Winch dyeing apparatus. COURTAULDS Ltd. Dec. 18, 1959 [Dec. 19, 1958], No. 41000/58. Class 15(1). In a winch dyeing machine having guide bars in which a plurality of textile ropes is dyed simultaneously, each guide bar comprises a spring-loaded finger pivoted at one end on the machine so that the finger is urged against one of two supports, the first support being capable of holding the finger against the action of the spring in a position separating adjacent ropes, and the second support capable of holding the finger against the action of the spring in a position substantially parallel to the path of the ropes. As shown in the Figure accompanying the Provisional Specification a finger 1 mounted on a pivot 2 is secured at a point 3 to one end of an extended spring 4 the other end of which is held at a point 5 of the machine 6. Finger I rests on a support 7 and is urged on to support 7 by spring 4. Movement of textile ropes either side of finger 1 in the direction of the arrow is preferably insufficient to overcome the force of spring 4. Entangled ropes however preferably cause finger 1 to describe an arc and bring it into contact with support 8 thereby completing an alarm circuit 9. Alternatively finger 1 in contact with support 8 may operate a brake so that damage to the textile ropes is averted. The spring may be attached at one end to the finger and at the other to the machine such that it is extended to its greatest extent when the finger is not in contact with either support,. Alternatively the spring may be coaxially contained in a hollow finger with the other end of the spring riding on a cam so that the spring is always under compression but is most compressed when the finger contacts neither support.
Patent GB-1134127-A (GB)
Title: Releasable fastenings for fitted carpets
Inventor: DIXON JOHN CRISPIN
IPC: A47G27/04
Filed: 1966-09-14
Abstract: 1,134,127. Securing carpets to floors. PRESSED STEEL FISHER Ltd. 30 Aug., 1967 [14 Sept., 1966], No. 41041/66. Heading A4S. A carpet is fitted to a floor, e.g. of a vehicle, by a snap-action releasable fastener consisting of a part 11 having a head 13 detachably engageable in a resilient boss 17 of a radially split disc of a part 12 having prongs 18 which splay and engage in the backing of a carpet which is pressed down on the fastener already assembled and screwed into the floor. A blow bends the prongs to grip the carpet and on taking up the carpet the part 12 is removed with the carpet. In modifications, the member 11 is secured to a floor by means appropriate to the material of the floor, e.g. by popriveting to a panel floor or the initial inclination of the prongs is inwardly.