baber/WOPTO huggingface dataset:
Patent GB-643263-A (GB)
Title: Improvements in or relating to systems for detecting objects by "echo" or re-radiation
IPC: G01S15/52
Filed: 1945-06-30
Abstract: 643,263. Radiolocation. TRICKER, R. A. R., and BUCKINGHAM, J. June 30, 1945, No. 16702. [Class 40 (vii)] [Also in Group XX] Apparatus for observing a cathode-ray tube forming part of a radar or ultrasonic detection system comprises a camera in which film is exposed to record all responses received in one cycle, e.g. 360 degrees scan of a radar plan position indicator, automatic means for developing and fixing the exposed film and exposing a fresh portion after each cycle, and means for optically projecting a sequence of the pictures in rapid succession without visible interruption between the separate pictures. As shown, an image of the screen 60 of the cathode-ray tube 61 is formed by the lens 80 on the film 66 wound by intermittent rotations of the drum 64, from the spool 62 to the spool 99. The sprocket 67 is connected by a slipping drive to a continuouslyrunning motor and the film is allowed to be fed, and the drum 64 allowed to rotate by release of a pawl 68, engaging a ratchet 69, once for each cycle of the radar system. The film passes means at 82 for developing and fixing the film. Three absorbent pads are wiped across each film frame in a direction perpendicular to the film movement. One is saturated with developer, one with water, and one with fixer, and the water pad is brought back into contact with the film after this sequence. Apertures 65 are provided in the drum 64 and the exposed frames of film are aligned therewith. Also aligned with six of these apertures, in the intermittent stopping positions of the drum 64, are optical projection systems consisting of lamps 71 and condenser 72. A reflecting system 73 is provided, concentric with the drum 64 and supported on a member 72 capable of movement in guides 76, 77 to produce axial movement of the member 73. The member 73 carries a number of reflecting facets, at different inclinations as shown dotted, and in different axial position, so that by axial movement of the member the light beam from each of the six projection lamp and condenser systems is reflected into the projection lens system 95 to form an image on a screen. The images are projected first in forward and then in reverse order. A simpler apparatus is also described in which two optical projection systems only are used alternatively by a shutter or a switching arrangement for the lamps. In another form a claw is used to feed the film and in the intervals between feeding movements the film beyond the developing &c. arrangement is oscillated so that two adjacent frames are brought in turn before a single projection system.
Patent GB-203800-A (GB)
Title: Improvements in mattresses, chairs, settees and the like
IPC: A47C23/30
Filed: 1922-06-16
Abstract: 203,800. Rout, A. J. June 16, 1922. Spring surfaces.-A spring constructional element for use as upholstery or as a mattress comprises two similar open rigid frames a, b, cylindrical helical compression springs d arranged around their peripheries, other compression springs e and tension springs f connecting the springe e to the springs d or to the frame and to each other. The compression springs may be arranged in parallel rows, there being the same number in each row, and the tension springs f are preferably arranged as shown in Fig. 2. An additional frame c carrying a second set of springs may be provided, while laths q may extend between the superposed springs. Specification 203,999 is referred to.
Patent GB-561710-A (GB)
Title: Improvements in or relating to mecbanical adjustment of elements mounted inside vacuum or gas filled tubes
IPC: H01J5/42
Filed: 1942-11-26
Abstract: 561,710. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd., and FOULKES, C. H. Nov. 26, 1942, No. 16823. [Class 39 (i)] [Also in Group XXVI] An arrangement for adjusting the position of an element mounted inside a vacuum or gas filled tube comprises an elastic metal pipe 4 sealed through the envelope of the tube with a gas tight seal and extending outside the tube, and a metal rod 5 which passes through the pipe into the envelope and is soldered to the pipe only at the extremity of the external extension. The pipe 4 may be soldered in a copper cup member 11 sealed to the glass stem of the envelope. The member 11 may have downward extension 12 which serve as the mounting means for the tube and relieve the glass envelope of torsional strain when the rod 5 is rotated. The pipe 4 may be made of copper nickel alloy and the rod 5 of steel, the joints being formed by silver solder.
Patent GB-1213092-A (GB)
Title: A transistor motor apparatus
Inventor: INAGAKI JUNPEI
IPC: H02P6/12
Filed: 1969-04-01
Abstract: 1,213,092. Electric motors. TOKYO SHIBAURA ELECTRIC CO. Ltd. 1 April, 1969 [2 April, 1968; 6 April, 1968; 18 June, 1968], No. 16946/69. Heading H2A. A PM. rotor D.C. motor comprising a plurality of stator coils 2.1, 2.2,2.3 connected individually in series with a transistor 9, 10, 11 switched in dependence on rotor position, includes a current control arrangement for reducing the rate of fall of current through a stator winding when its associated transistor is switched off. The transistors are controlled by switching devices 4, 5, 6, which may comprise a magnetic field dependent semi-conductor pickoff associated with an LC oscillator, and, in the embodiment shown, when a given transistor is switched off an associated capacitor, 12, 13, 14, absorbs the reverse impulse voltage in the corresponding winding, thus reducing the rate of change of current and any consequent rotor oscillation. In a modification Fig. 2 (not shown), the capacitors are omitted and a path for the winding current after switch off is provided through a reactor (40) in series with the stator star point and a Zener diode (41) connected between the D.C. source negative terminal and the cathodes of diodes 20, 21, 22 connected to the stator winding ends. Maximum speed limitation.-When the motor speed exceeds a value set by the breakdown voltage of a Zener diode 31, the voltage fed through the diodes 20, 21, 22 causes the Zener and transistors 25, 30 to conduct which consequently causes transistor 17 to be switched off, thus cutting off the supply to the switching devices 4, 5, 6 controlling the transistors. In the Fig. 2 embodiment, when transistor 17 is switched off under overspeed conditions, capacitor 19 discharges through a parallel resistor (47) so that the devices 4, 5, 6 continue to operate for a limited time.
Patent GB-684635-A (GB)
Title: Combustion space for internal combustion engines
IPC: F01L1/28
Filed: 1950-07-06
Abstract: 684,635. Combustion chambers; valves. BUCHI, A. July 6, 1950 [July 6, 1949], No. 16954/50. Classes 7 (ii), 7 (iii) and 7 (vi). A combustion chamber 1 for a fuel injection or spark ignition engine has a part 5 with a conical wall 4 in the cylinder head below a valve seat 3 therein and a recess 7 in the piston having an outermost diameter substantially equal to the outer diameter of the conical portion 5, the bottom of the recess 7 and corresponding part of the recess 5 being flat and substantially parallel. The exhaust valve 9 is coaxial with and seats in the inlet valve 10, thestem of which has exhaust passages 27, and the inlet passage 25 is formed with a spiral portion 25<SP>1</SP>, Fig. 7, adjacent the inlet port 3 which produces whirling of the charge entering the cylinder. The adjoining parts 12, 13 of the piston crown and cylinder head are either conical, flat, or rounded and arranged with very little clearance at top dead centre. In a fuel injection engine two or more injectors 16, 16<SP>1</SP> inject the fuel in the direction of the air swirl in the chamber 1. In Fig. 6 the inlet and exhaust valves 10, 9 are open simultaneously whereby the air from passage 25 scavenges the combustion chamber, and the parts 12", 13" are arranged so that the air squeezed from the space therebetween at top dead centre is directed to the bottom of the recess 7 and assists the scavenging. In a spark ignition engine the injectors 16, 16<SP>1</SP> are replaced by two radially directed sparking plugs, and in a two stroke fuel injection engine the two coaxial valves 94, 10 are replaced by a single inlet valve. A starting-air valve may be situated in the conical wall 4 of the combustion chamber.
Patent GB-583272-A (GB)
Title: Improvements in and relating to means for holding the profiles or shaping tools of potters' machinery
IPC: B28B1/02
Filed: 1944-09-06
Abstract: 583,272. Making pottery. MADDOCK & SONS, Ltd., J., and MADDOCK, R. A., Sept. 6, 1944, No. 17000. [Class 87 (i)] In a potter's jigger a number of profile tools 20 are mounted on a turret head 13 to provide a ready changeover from one shape to another. The tools are mounted for universal adjustment by nuts and bolts 22 engaging slots 21, 19 therein and in a member 17 which is rotatable in the turret. The turret is clamped in adjusted position on the jolley arm 12 by dowels 16 and by a nut 25 which may be integral with the operating handle 26 of the jolley arm. In a modification, two turret heads are mounted on the jolley arm where two articles are to be shaped simultaneously. According to the Provisional Specification, the handle 26 is spring-pressed to engage recesses in the turret to lock the tools in adjusted positions.
Patent GB-836682-A (GB)
Title: Improved motor vehicle steering gear
IPC: B62D5/24
Filed: 1958-05-28
Abstract: 836,682. Gearing for conveying rotary motion. GENERAL MOTORS CORPORATION. May 28, 1958 [June 26, 1957], No. 17003/58. Class 80 (1). In power-assisted or other steering gear wherein a sector 40, Fig. 2, on a rock shaft 42 is engaged by a reciprocable rack 22 the rack or sector teeth, or both, are tapered as shown in Fig. 3 and the rock shaft 42 is axially adjustable to set the required clearance between the teeth by rotation of a bolt 84 whose head 90 is held between a spring 82 and a retainer 94 mounted in the end of the rock shaft. According to the invention the materials of the retainer 94 and head 90 are so chosen that the wear between them as the shaft 42 rocks compensates for the wear between the rack and sector teeth, the shaft 42 being automatically moved axially by the spring 82 as wear proceeds to maintain the desired clearance between the rack and sector teeth. As shown, the rack 22 is reciprocated by a ball nut 28 on a steering shaft worm 26 and is power-assisted, the nut 28 being secured in a recess in a piston 18 integral with the rack 22. Pressure fluid is supplied to one or other side of the piston 18, to assist the steering, by a control valve, Fig. 1 (not shown) responsive to the reactionary thrust on the steering shaft. It is stated that during operation pressure fluid leaks around shaft 42 into chamber 102, Fig. 3, and develops a pressure which accelerates the wear between the retainer 94 and bolt head 90. The retainer 94 is preferably of softer material than the head 90.
Patent GB-836577-A (GB)
Title: Improvements in and relating to friction drives
Inventor: PERRY FORBES GEORGE DE BRIE
IPC: F16D7/02
Filed: 1955-06-14
Abstract: 836,577. Friction couplings. MULLARD RADIO VALVE CO. Ltd. May 25, 1956 [June 14, 1955], No. 17094/55. Class 80 (2). A friction coupling which slips on overload, between a member 2 fast on a shaft 1 and a member 10 loose on the shaft, comprises four resilient steel plates 13 carried by their ends in grooves 12 in a flange of member 10 and contacting a cylindrical flange 6 of member 2. The flange 6 may have a surface of anodized aluminium and the plates 13 may be surfaced with Nylon, " Ferodo " (Registered Trade Mark) or polythene, or vice versa. As shown, member 10 is claw coupled to a gear-wheel 16 geared to a driving motor. Cooling fluid may be passed through the interior of the coupling which will accommodate slight angular and axial misalignment. The coupling may be used for alternative manual or power drive of a variable capacitor and slips at the limits of adjustment thereof.
Patent GB-800724-A (GB)
Title: Improvements in and relating to filter presses
Inventor: JONES SAMUEL
IPC: B01D25/172
Filed: 1956-06-02
Abstract: 800,724. Filter presses. EDWARDS & JONES, Ltd. Nov. 19, 1956 [June 2, 1956], No. 17100/56. Class 46. A filter press frame is  provided with a supporting bracket 10 having two arms 11 mounted approximately vertically with inwardly and approximately horizontal cranked portions 23. Rollers 22 and 25, mounted in ball races 19 and 24 on the arms 11, are arranged to rotate about vertical and horizontal axes respectively so that the rollers engage the sides and upper face of the bottom flange of the overhead filter press girder. The overhead girder may be of I section or, as shown in the Fig. of two flanges back to back. In the latter case the flanges 27 are preferably arranged with a space 28 between them and the bracket 10 is provided with a triangular shape bracket 31, extending in front of the press frame, and having a vertical lug or pin 30 extending into the space 28 to prevent twisting of the press frame. The bracket 10 may form the actual top bar of the frame or may be attached to the frame by tie rods 33.
Patent GB-476956-A (GB)
Title: Improvements in or relating to teleprinter keyboard transmitters
IPC: H04L17/06
Filed: 1936-06-19
Abstract: 476,956. Type - printing telegraphy. CREED & CO., Ltd., and SALMON, R. D. June 19, 1936, No. 17104. [Class 40 (iii)] A teleprinter keyboard transmitter is provided with storage mechanism for the element of a signal immediately preceding the stop element, the key levers being locked during the transmission of the preceding elements but freed during the transmission of said signal element and the stop signal. As shown the extension 4 of the fifth selector bar 1 which determines the operation of the cam-operated selector lever 7 is pivoted to the selector bar, normally being held against a stop 6 by a spring 5. When the fourth signal element has been transmitted the selector bars and a locking bar are released to release the key levers 2. The extension 4 of the fifth bar 1, if it has been moved to the right, remains in position, being held by the selector lever 7, until the fifth impulse has been transmitted and the lever 7 has been raised, after which it is returned to its normal position by the spring 5. Specification 235,574, [Class 40 (iii)], is referred to.
Patent GB-882587-A (GB)
Title: Conditioning of activated carbon
Filed: 1958-05-29
Abstract: Calcium, strontium, barium, magnesium, or aluminium hydroxide, carbonate, or bicarbonate is deposited in activated carbon from aqueous solution in a sufficient amount to reduce the production of corrosive vapours when steam stripping chlorinated hydrocarbons from the carbon.  The carbon may be saturated a plurality of times with a solution of the basic substance e.g. calcium bicarbonate (Example I), or once with a solution of a more soluble salt, e.g. aluminium sulphate (Example III), from which the basic substance is subsequently precipitated.  Before deposition, the carbon may be treated with gaseous ammonia and then washed and steamed.
Patent GB-380494-A (GB)
Title: Small syringe for urethral injections
IPC: A61J1/06
Filed: 1931-06-12
Abstract: 380,494. Surgical syringes. CARACCIO, G., 16, Via Venti Settembre, Genoa, Italy. June 12, 1931, No. 17166. [Class 81 (ii).] A syringe for urethral injections comprises a phial 5 having a perforated tapered end 51 and closed at its other end by a plunger-plug 7. The end 5<1> is covered by a rubber cap 6 having a beaded edge 6<1> engaging a groove in the phial. The appliance is used in conjunction with a bottle 1, containing a soapy or other disinfectant 4 for the hands, and closed by dropdelivery stopper 3, the bottle serving to press in the plunger 7 for injection purposes. A number of phials, each containing material for one injection only, together with a bottle 1 and a supply of gauze and any other material required, are put up into a single pocket-case.
Patent GB-659811-A (GB)
Title: Improvements in and relating to electric filter circuits
IPC: H01P1/202
Filed: 1947-06-30
Abstract: 659,811. High-frequency electric filters. GENERAL ELECTRIC CO., Ltd., and ESPLEY, D. C. June 30, 1947, Nos. 17184 and 20293. [Class 40 (viii)] An electric filter circuit having a pass band whose mid-wavelength is #m and which provides substantially infinite attenuation at a wavelength #1 comprises a transmission line 10 having stub devices 12 and 14 connected at point spaced apart by a#m/4, where a is an odd integer, each device comprising two or more stubs connected in parallel and presenting infinite impedance at #m, a first stub of the device appearing as a short circuit across the line 10 at #1, and a second stub of the device having an electrical length, substantially less than the first stub to render the attenuation frequency characteristic appreciably asymetric about the pass band. The stubs used may be composite in character as described in Specification 659,812. If it is desired that the wavelength of infinite impedance should differ widely from the midwavelength the stubs may be arranged to have differing characteristic impedances. In the example shown, which uses coaxial lines, this may be effected by changing the ratio of the diameters of the inner and outer conductors Specification 617,787 and 659,863 are referred to.
Patent GB-1007035-A (GB)
Title: Improvements in or relating to electronic ring counters
Inventor: BUTCHER JACK LESLIE
IPC: H03K23/84
Filed: 1962-05-05
Abstract: 1,007,035. Electronic counters. WESTLAND AIRCRAFT Ltd. May 6, 1963 [May 5, 1962], No. 17363/62. Heading G4A. [Also in Division H3] Each stage of a ring counter comprises a silicon-controlled rectifier which is normally inhibited but which fires to a pulse applied to all the stages when the inhibition is removed, firing of a rectifier restoring the associated inhibition but removing it from the next stage. Depression of switch S fires silicon-controlled rectifier S.C.R.1 of the first stage which then charges capacitor C3 of the second stage, a diode D2 meanwhile isolating S.C.R.2. At the same time capacitor C1 charges. A pulse generator comprising a further silicon-controlled rectifier S.C.R. and a Zener diode Z then applies timed pulses to a common lead 2 and the primaries of transformers T1-T6. The associated uncharged capacitors C2 and C4-C7  shunt all the secondary windings except T2 where C3 permits S.C.R.2 to fire via D8. S.C.R.2 pulses the associated load O/P2 and charges C4 in the next stage. At the same time it shuts off S.C.R.1. The circuit may be used for controlling aircraft de-icers.
Patent GB-727215-A (GB)
Title: Improvements in cyclone separators and methods of operating
IPC: B04C5/13
Filed: 1953-06-23
Abstract: 727,215. Cyclone separators. AKTIEBOLAGET B. A. HJORTH & CO. June 23, 1953 [July 11, 1952], No. 17392/53. Class 23, A cyclone separator, (see Fig. 7, not shown), has a Venturi-shaped outlet duct 3, Fig. 1, provided with eight blades 2 having curved leading edges as shown. The blades are in the form of generally plane surfaces curved in one plane only and may be four in number, (see Fig. 5, not shown). In a modification, Fig. 3, the duct has a conical portion 7 and a cylindrical portion 8 and the blades 2 are circumferentially spaced about a generally dropshaped body 9. In a second modification, Fig. 4, the blades 10 are curved in one plane only and are of varying thickness as shown. The blades are spaced from one another so as to form channels of substantially uniform cross-sectional areas.
Patent GB-255106-A (GB)
IPC: H05B3/00
Filed: 1926-07-12
Abstract: 255,106. British Thomson-Houston Co., Ltd., (Assignees of lpsen, C. L.). July 10, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Resistance furnaces.-In a method oi heat-treating metals, the metal is placed in a furnace maintained at substantially the desired temperature, and the rise in temperature of the metal is indicated by a pyrometer closely associated with the metal, which is removed from the furnace and quenched when its temperature shows no substantial increase, and is substantially the same as the temperature of the furnace. The temperature of the furnace 11, in which the gear wheels 10 are placed for heat-treatment, is controlled by a pyrometer 13 in the form of a thermocouple connected to a galvanometer 14, the pointer 15 of which is arranged so as to swing over contacts 16, 17. Co-operating with these contacts is a reciprocating contact 18 adapted to be moved towards or away from said contacts by an electric motor 19. The contacts 16, 17 are arranged so that when the furnace has reached the desired temperature the pointer 15 is mid-way between them. If the temperature of the furnace increases, the pointer 15 will be moved over the contact 17 and squeezed between this contact and the reciprocating contact 18, thus closing a circuit from the supply source 20 which energizes a coil 21 and causes a switch arm 22 to move out of contact with contacts 23, de-energizing a coil 24 thus opening a switch 25 which disconnects the resistance heater 12 from the supply 20. As the temperature of the furnace 11 falls, the pointer 15 will move over the contact 16 and will be squeezed between the contact and the contact 18 thus energizing a coil 27 and causing the arm 22 to move and engage the contact 23 thus connecting the heater 12 to the supply 20 again. For the purpose of indicating when the gears 10 should be removed from the furnace for quenching, a pyrometer 30 is placed in the furnace close to the gears 10, and is connected to a galvanometer provided with a pointer 31 forming part of a recording instrument 32, and being provided with means for inscribing a temperature-time curve 33 on a strip of paper or chart moved beneath it at a uniform rate. The empty furnace is heated to the desired quenching temperature, and the pointer 31 is set, by adjusting a rheostat 32a, to rest on a line 36 on the chart. The gear wheels 10 are now inserted in the furnace closely adjacent to the pyrometer 30, and owing to their rise in temperature, the pointer 31 will describe the straight portion 38 of the curve, and then the part 39, this part approaching the line 36 as the gears 10 approach the quenching temperature. When the pointer 31 touches the line 36, the gears are removed from the furnace and quenched.
Patent GB-174282-A (GB)
IPC: B25D11/12
Abstract: 174,282. Binnie, R. Jan. 18, 1921. Percussive drills.- The shank of a percussive drill is rotated by means of a worm 26 driven by the crank shaft 20 which reciprocates the drill and geared with a worm wheel 27 mounted on a squared part 30 of the shank by means of a removable bush 34. This bush may be made up of two L- shaped parts as shown, or of two channelshaped parts, or may be in one piece.
Patent GB-1341061-A (GB)
Title: Fluidtight seals
Inventor: NIEMANN GERT
IPC: H01M50/169
Filed: 1971-05-27
Abstract: 1341061 Seaming non-metallic sheet material ROBERT BOSCH GmbH 27 May 1971 [27 June 1970] 17438/71 Addition to 1339493 Heading B5K An assembly comprises a pair of components 10, 18 of thermoplastic plastics material, one component 18 having a grooved surface 13 interengageable with a ribbed surface 15 on the component 10 to form a closed channel for receiving an injection moulding composition 16 for forming a fluid-tight seal, the ribbed surface of the component 10 being a channel 11 whose sides project as lip-shaped flanges 15 which, when engaged with the component 18, project into the groove 13 therein and are splayed apart by a wedge-like hump 14 extending substantially parallel to the side walls 12 of the groove 13, which side walls 12 have at their free ends thickenings 19 which extend into the groove 13, the flanges 15 being pressed on to the inner surfaces of the walls 12 by the injection of the sealing and welding composition 16. The thickenings 19 are curved at 20 and bevelled at 21. The components 10, 18 comprise a housing and a cover, respectively, of an accumulator.