baber/WOPTO huggingface dataset:
Patent GB-602077-A (GB)
Title: Improvements in deflecting circuits for cathode-ray tubes
IPC: H03K4/39
Filed: 1945-12-06
Abstract: 602,077. Valve amplifying circuits. PHILIPS LAMPS, Ltd. Dec. 6, 1945, No. 33017. Convention date, Aug. 28, 1940. [Class 40 (vi)] A magnetic deflection circuit for a cathoderay tube comprises a saw-tooth generator and an amplifying circuit, the arrangement being such that the internal impedance of the amplifying tube is increased during the fly-back period by supplying part of the output voltage to its suppressor grid. The arrangement results in a reduced fly-back time. In Fig. 4, a pentode valve 15 is used to amplify a sawtooth wave-form which is applied across terminals 2 and 3. Output transformer 12 supplies current to the deflecting coil 11. During the fly-back period an increased voltage is developed across the secondary of transformer 12 due to the inductance in the circuit, and the cathode and suppressor grid of valve 15 are connected to the output circuit in such a way that a negative voltage is applied to the suppressor grid during the fly-back period, thereby increasing the impedance of valve 15. Specifications 464,141 and 548,463 are referred to.
Patent GB-1350858-A (GB)
Title: Rotary positive-displacement vane-type pumps or motors
IPC: F01C21/10
Filed: 1972-07-14
Abstract: 1350858 Rotary positive-displacement pumps and motors ROBERT BOSCH GmbH and DEUTSCHE ACHESON GmbH 14 July 1972  [27 July 1971] 33022/72 Heading F1F A vane-type pump or motor comprises a rotor 5 eccentrically mounted in a housing 1 such that the surface of the rotor contacts a zone 10 of the inner surface of the housing, the zone 10 being covered by a coating of anti-friction material 11 consisting of 50 to 70 per cent Molybdenum Disulphide and Graphite, the rest being a solid material or binder such as a silicone resin. In the pump shown vanes 3 are rotatably mounted on a pin 2 fixed in the housing, the vanes extending slidably through a hollow rotor.
Patent GB-1427241-A (GB)
Title: Centrifugally-released brake assembly for a power operated rotary tool
IPC: A01D34/76
Filed: 1973-07-11
Abstract: 1427241 Centrifugal release of brakes; rotary shoes; cooling BLACK & DECKER MFG CO 11 July 1973 [5 Sept 1972] 33086/73 Heading F2E A centrifugally-released brake assembly, e.g. for the rotor of a power-operated tool, Fig. 2, comprises brake members 68, Figs. 2 and 3, arranged to rotate with the rotor, a stationary hub 32, 42, Figs. 2 and 6, and spring means 66 biasing the brake members towards the hub, the spring means 66 being so rated that, when the rotor rotates at or above a given speed, the centrifugal force acting on the brake members is sufficient to overcome the force of the spring means and move the brake members 68 out of frictional engagement with the hub 32, 42, but below the given speed the spring means causes braking to occur. Only one brake member need be provided. The main fixed parts of Fig. 2, are a motor mounting plate 30 with openings 55, Fig. 4, motor housing 11, blade housing 24 with openings 56, skirt 58 with fan cover plate 57, hub 32 with brake band 42, and bearing 34. The movable parts are motor output shaft 22, fan hub 46, fan 40 incorporating brake members in the form of brake pins 68, each associate with a spring 66, and the principal part, the blade 28, of the tool which is an edger-trimmer. Each brake pin 68 has a flange 78 and is accommodated in a cavity 60 of the fan so as to be axially movable and is normally biased into frictional engagement with the brake band 42. The brake band 42 surrounds hub 32 and is supported on it by tangs 44, Fig. 6, engaging shoulders 45. Some pins 68 and/or springs 66 may be constructed differently from others so as to engage the brake band at a different speed. The purpose of the invention is to effect abrupt stopping of moving parts after the motor is de-energized. Also, premature brake-engagement provides audible warning of motor overloading.
Patent GB-206389-A (GB)
Title: Improvements in roller coaster apparatus
IPC: A63G7/00
Filed: 1922-12-04
Abstract: 206,389. Feucht, C. G. Dec. 4, 1922. Railways for recreation. - Rollercoasters 10 are provided with sidethrust resisting wheels 23, 26 arranged at different levels and co-operating with thrust plates 31, 33, 37 arranged at corresponding levels on the track structure. The wheels 23, 26 are carried by a wheel-frame 12, the upper wheels 23 being disposed at approximately the level of the seats of the car 10 and the lower wheels 26 at approximately the level of the centres of the running wheels 17. Platforms 34 extend round the track, covering the wheel frames 12 and engaging friction surfaces 27 secured to the yokes 16 of one or more of the frames when the cars rise from the track. At the loading station, a lowlevel platform 35 is provided, so that a foottreadle, normally covered by the platform 34, is exposed for operating the car gates. A running- board 39 is mounted below the gate-operating treadle between the wheel frames 12 and is secured to the hubs 24 of the wheels 26. Specification 206,388 is referred to.
Patent GB-1456862-A (GB)
Title: Electromagnetic relay
IPC: H01H50/44
Filed: 1973-12-10
Abstract: 1456862 Electromagnetic relays MATSUSHITA ELECTRIC WORKS Ltd and H SAUER 10 Dec 1973 [13 April 1973] 33129/74 Divided out of 1456861 Heading H1N In a relay of the type comprising an armature 1d inside the body 2 of a coil holder of integral construction, fixed contacts 32d, 32d<SP>1</SP> in the coil holder body are made of ferromagnetic material and are in contact on their one sides with permanent magnets 50d, 50d<SP>1</SP> and provided on their other sides each with a plate 99, 99<SP>1</SP> of contact material co-operating with moving contacts formed with similar plates 3d, 3d<SP>1</SP> on the armature. These plates serve as magnetic separators. The permanent magnets are of electrically insulating barium ferrite. The armature is of soft iron and has knife edged cross members at one end, the knife edges 15 being forced into a V-notch formed in a U-shaped yoke 4d by an armature retaining spring 6d. Two adjusting springs 17d, 17d<SP>1</SP> anchored to the yoke act on wings 76, 76<SP>1</SP> of the armature to bias it.
Patent GB-288230-A (GB)
Title: Sheet piling of box-shape
IPC: E02D5/04
Filed: 1927-12-07
Abstract: 288,230. Nolte, K. April 6, 1927, [Convention date]. Piling.-Rolled sections a, b for box piling are connected together at the neutral axis by interlocking bars e located inside the box-sections and so arranged that adjacent faces of adjacent boxes are in contact substantially along their whole length. The interlocking bars may have ribs f, Fig. 2.
Patent GB-511248-A (GB)
Title: Improvements in knapsacks
IPC: A45F3/08
Filed: 1938-11-15
Abstract: 511,248. Knapsacks. AKTIESELSKAPET BERGANS MEISOG RYGGSEKK. Nov. 15, 1938, No. 33163. Convention date, Nov. 19, 1937. [Class 133] In a knapsack carrying frame of the kind provided with a curved transverse base portion or '' girth bow " 3, Fig. 1. The lower ends of the shoulder straps 6 are releasably attached to holders 7 spaced inwardly from the ends of the bow, the holders being attached either directly to the bow outside or inside the stays 8 and in the former instance anchored in place by pins 9, or attached to the lower ends of the stays 8 near the connection to the bow, as shown.in Fig. 2. - The Specification as as open to inspection under Sect. 91 describes also the modified attachment means shown in ,Fig. 3 (Cancelled). This subject-matter does not appear in the Specification as accepted.
Patent GB-1474275-A (GB)
Title: Water jet marine propulsion units
IPC: F04D29/24
Filed: 1974-07-25
Abstract: 1474275 Water jet propulsion HYDRO-TECH CORP 25 July 1974 33255/74 Heading B7V  A marine propulsion unit comprises a doublesuction impeller 104 within a casing 10 mounted inboard or outboard of a vessel 28, and driven by a shaft 36 to draw water from two inlets 144, 146, and pass it through a double-volute passage (166), (168), Fig. 5, not shown, to an outlet 172, 178, leading from the top of the pump housing, and nozzle 186. The nozzle is rotatable about two axes perpendicular to the axis of the shaft 36 by means of a ball-and-socket connection 188, 192 and a ball bearing arrangement 204. The nozzle includes a reverse deflector 258 pivotally mounted thereon with two outlets 264, 266. In Figs. 12-14, not shown, the outlet nozzle is pivoted about horizontal axis and has a vertical pivotal internal valve (294) for steering. The outlets can be straight following section 172.
Patent GB-1060641-A (GB)
Title: Adjustable bulldozer arrangement
IPC: E02F3/84
Filed: 1963-08-22
Abstract: 1,060,641. Dozers. FRANK G. HOUGH CO. Aug. 22, 1963 [Aug. 23, 1962], No. 33267/63. Heading E1F. Vertical swinging of a pair of dozer bladecarrying arms about pivotal connections between the mid portions of the arms and a tractor is controlled by fluid actuated double acting rams extending between pivotal connections on the tractor and the free ends of the arms, the rams being so incorporated in a control circuit by a pair of pipes connected respectively between corresponding ends of the rams that on operation of a blade-tilting ram extending between one arm and the blade rotation of the support arms in opposite senses about the pivotal connections thereof with the tractor may occur so that the blade can tilt about the longitudinal axis of the tractor.
Patent GB-1031454-A (GB)
Title: Monostable circuits
Inventor: WRIGHT MAURICE JAMES
IPC: H02M1/08
Filed: 1961-09-18
Abstract: 1,031,454. Semi-conductor monostable circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. Sept. 3, 1962 [Sept. 18, 1961], No. 33323/61. Heading H3T. In a monostable circuit comprising a semi-conductor controlled rectifier 4 of the type, as described in Specification 1,031,451 (Division H1), which can be switched from the conducting to the non-conducting conduction by the application of a suitable reverse potential to its gate electrode, the application of a positive pulse at terminal 3 causes the rectifier 4 to conduct, the positive potential then established at its cathode causing a reverse current to flow through inductor 8 which, increases until it reaches a value sufficient to switch the rectifier 4 off.
Patent GB-1480829-A (GB)
Title: Antennae
IPC: H01Q21/29
Filed: 1974-07-29
Abstract: 1480829 Aerials; radio receiving apparatus MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 29 July 1974 [1 Aug 1973] 33352/74 Headings H4A and H3Q A receiving aerial system comprises a loop aerial 1 and a grounding plate 6. The loop and the plate are perpendicular to each other and, as described, are located on adjacent side walls 5, 5a of a portable radio receiver. A variable capacitor 2 is inserted in the loop 1 for tuning purposes, and said loop is tapped at output terminals c, b so located as to match the input impedance of the receiver. A series resonant circuit 3 is provided which is tuned to the mid-frequency of the operating band of the receiver, and connection is made to the receiver by a transmission line 4. The length of the said transmission line is such that an impedance match is attained which minimizes the noise in a band centred on said mid-frequency. As shown, the circuit 3 comprises only an inductor and a capacitor in series, but in another embodiment two parallel resonant circuits each comprising an inductor and a capacitor are additionally provided, one being connected at each end of the series circuit (Fig. 5, not shown). In another embodiment the circuit 3 is coupled to the loop 1 through an impedance transformer (Fig. 6, not shown).
Patent GB-208630-A (GB)
Title: Improvements relating to wind-screens for motor vehicles and the like
IPC: B60J1/00
Filed: 1922-12-07
Abstract: 208,630. Auster, Ltd., and Auster, A. C. Dec. 7, 1922. Windscreens.-Relates to windscreens, particularly for the rear seats of motor vehicles, of the type which are formed of two portions each comprising two or more panels or sections, and adapted to be connected together at the centre with the meeting panels 3 in transverse alignment, in combination with a supporting-arm 4 for each portion pivoted to the side of the vehicle and adapted to be swung aside to allow entry or exit of the occupants or permitting the panels to be disposed along the side of the vehicle. According to the invention, the supporting-arms 4 are so arranged that the meeting edges of the panels 3 may be coupled together in two portions of the arms, one in advance of and one to the rear of the right-angled position of the arms, as shown in Fig. 2. Each half of the complete screen is preferably built up of three panels, the middle panels 2 being hinged to rearwardly extending lugs 19 on the inner panel 3, and the outer panel 1 being hinged to rearwardly extending lugs 18 on the middle panel 2, so that the outer panel may fold against the middle panel and then the inner panel against the outer. The hinges at the ends of the arms 4 are constructed as described in Specification 208,602.
Patent GB-307722-A (GB)
Title: Method of and means for eliminating or reducing the glare of the headlights of motor road vehicles
IPC: B60Q1/14
Filed: 1927-12-09
Abstract: 307,722. Ellenger, F., and Sheppard, W. D. Dec. 9, 1927. Reflectors.-A vehicle lamp reflector comprises a short concave silver-plated portion 1 behind the bulb 2 and a conical or concave hood 4 which extends to the front of the lamp casing 3 and has a white matt inner surface which, as shown at 6 in Fig. 1, extends to near the centre line of the reflector.
Patent GB-1082435-A (GB)
Title: Multicolour weft selection device for shuttleless weaving looms
IPC: D03D45/20
Filed: 1965-08-05
Abstract: 1,082,435. Weft selection; shuttleless looms. ELITEX, SDRUZENI PODNIKU TEXTILINHO STROJIRENSTVI. Aug. 5, 1965 [Sept. 2, 1964], No. 33488/65. Heading DIE. A weft selector 1 comprises a number of guides 4 which are held in a withdrawn position by pawls 30 and which are spring loaded so that, when a solenoid 34 releases a pawl 30, the guide is allowed to bear against a cam operated slide 14 having tracks 27 which allow the selector to be advanced to the picking position and causes it to be returned for latching by the pawl.
Patent GB-1475995-A (GB)
Title: Liquid pumps
IPC: F04D13/08
Filed: 1973-07-13
Abstract: 1475995 Centrifugal pumps SIMMS GROUP RESEARCH & DEVELOPMENT Ltd 5 July 1974 [13 July 1973] 33563/73 Heading F1C A submersible pump, e.g. for pumping fuel from tanks, is driven by an electric motor having its commutator 21, Fig. I, and brushes (not shown) normally submerged in fuel at a level 30. To maintain the fuel in the motor housing at the level 30, the pump inlet 26, Fig. 3, is extended vertically by a tube 29. Moreover, the outlet conduit (25), Fig. 4 (not shown) extends to a similar level and is connectible to a supply pipe. A pair of series-connected thermistors (39, 40), Fig. 5 (not shown) may be arranged in the motor housing, one above and one below the level 30, so that if the level should fall below level 30 the electrical potential between the thermistors alters and this is sensed by a Schmitt trigger (36) which then opens an electronic switch (34) to shut down the motor and thereby avoid the risk of igniting the air/fuel mixture in the motor casing.
Patent GB-190633-A (GB)
Title: Improvements in shuttle checking motions for looms for weaving
IPC: D03D49/60
Filed: 1921-12-14
Abstract: 190,633. Middleton, H. R., and Biltcliffe, H. Dec. 14, 1921. Checking shuttles.-The picker of a loom is advanced to meet the incoming shuttle and thereby check the motion by means of an auxiliary bowl i, which is carried by a bracket f adjustably clamped to the usual bottom shaft a, contacting with the tail of a picking-shoe d secured to a picking-shaft e. The bowl i is mounted on a lever g pivoted on a stud h, which is adjustably secured in a slot in the bracket f. Pivotal movement of the lever g is limited by stops f<1>, f<2> on the bracket f and the lever is maintained in its normal position by a spring j. On turning back the loom, the lever g pivots against the action of the spring and the bowl rides over the tail of the shoe. When the device is applied to a new loom, the lever g is preferably carried by a part secured to the usual tappet-block on the shaft a.
Patent GB-835680-A (GB)
Title: Improvements in or relating to bottle caps
Inventor: DREISS PHILIPP
IPC: B65D41/62
Filed: 1958-10-21
Abstract: 835,680. Bottle-capsules. VEREINIGTE KAPSELFABRIKEN NACKENHEIM G.m.b.H. Oct. 21, 1958, No. 33693/58. Class 125(3). In a foil bottle-capsule of the type having a skirt 5 intended to envelop both the neck of the bottle and the stopper or cork, the skirt being provided with a tear-off strip 3, two rows of inclined stampings are arranged along each side of the strip so that it can readily be torn off in either direction. The stampings 11, 13 or 12, 14 are arranged in herringbone pattern with the stampings of one row at an obtuse angle to those of the next.
Patent GB-171310-A (GB)
Title: Emergency brakes for road vehicles
IPC: B60T1/14
Filed: 1920-11-30
Abstract: 171,310. Gayler, J. B., and Gilbert, A. W. Nov. 30, 1920. Skids.-An emergency brake for road vehicles comprises on one or both sides of the vehicle a skid pan or shoe 1 secured by a lug 4 to an arm 6 pivoted upon the hub cap of the wheel and held normally in the raised position by a cable 14 the free end of which mav be held by a stud fixed to the dashboard. Upon unhitching the cable from the stud the shoe falls and becomes engaged beneath the wheel as shown, the drag being taken by a chain 11 extending from the shoe to a fixed bracket 12. The shoe may be made of sheet-metal having a metal-wearing plate riveted thereto and has lugs 2 to prevent lateral displacement with respect to the wheel.
Patent GB-449247-A (GB)
Title: Improvements relating to variable or controllable pitch airscrews
IPC: B64C11/36
Filed: 1934-11-23
Abstract: 449,247. Screw propellers. MILNER, H. L., The Folly, Gotherington, Gloucestershire. Nov. 23, 1934, Nos. 33746/34 and 17082/35. [Class 114] An automatic variable-pitch air-screw wherein the blades are connected to an axially movable sleeve are provided with controls for limiting the extent of such axial movement in accordance with the speed or acceleration of the screw propeller. The blades 10 are connected by links and pins 13 with a sleeve 15 which is under spring restraint 17. The sleeve is also provided with rods 18 adapted in their limiting positions to contact with depressions 31 in a flywheel member 21, the latter being mounted on a screw thread 20 and thus in accordance with the speed of the engine assumes a movement to or from the main boss. Its own movements are limited by adjustable flange members 25, 24. Further, the flange 24 is provided with flexible lip 32 engageable with a ring 33 on the flywheel for the purpose of damping and preventing hunting of the flywheel. In a modification, an adjustable sleeve 36 is provided on one side of the flywheel member 21 which carries centrifugal weights 39 adapted to contact with the adjustable member 36 or with a plate 42 which in this case carries the depressions into which the rods 18 can pass for the purpose of locking the blades in the maximum pitch position. In yet another modification, the sleeve 15 carries pivotal rods 18 having weights 58 thereon and a number of prongs 50 ... 55. The two rods are coupled by a spring 57 acting in opposition to the centrifugal forces on the weights 58. The rods 18 pass through the openings 56 in the boss which are shaped so that the projections 50-55 can engage at different speeds with the edge of the openings 56 and so limit the pitch changes. In another form, arms 64, 65 having inserts 67, 68 are pivoted and abut against the shoulder 69 on a sleeve 70 slidable on the shaft against a compression spring 71. The spring is disposed between an adjustable stop 72 in the frame 73 and in this case the rods 18 are connected to the stop plates 74 which are guided at their ends by the plate 72. The stop plates 74 are slotted to receive levers 77 formed integrally with the arms 64, 65 and each lever has a roller 78 engaging a corresponding slot in the stop plates 74 whereby angular movement of the arms is limited.
Patent GB-1070345-A (GB)
Title: Regulating the dead centre position of a reciprocating piston
Inventor: CONRAD HANS-JOACHIM
IPC: F16H43/00
Filed: 1965-08-06
Abstract: 1,070,345. Hydraulic transmission of power; liquid piston engines. BETEI LIGUNGS-UND PATENT VERWALTUNGS G.m.b.H. Aug. 6, 1965, No. 33773/65. Headings F1B and F1P. In a hydraulic power transmission system comprising a reciprocating liquid-displacing piston (4) Fig. 1 (not shown) within a cylinder (5) connected by a conduit (6) to a hydraulic motor (7) driving a shaft (8) the piston (4) is directly connected to an I. C. engine piston (2) having means for regulating the dead centre position comprising a dog (12) secured thereto by a rod (9) which when the normal dead centre is exceeded moves a pivoted feeler arm (19, 20) to depress a valve spool (25) Fig. 2 (not shown) against a spring (33), to allow passage of hydraulic fluid from the conduit (6) to a pressure reservoir (42) through a passage (35) having a non-return valve (38), a groove (28) in the valve (25) and a passage (40) in the valve casing (26) and in the event of the dead centre not being reached the valve (25) is urged outwardly of its casing by its spring (33) against the action of a dashpot device to allow passage of fluid from the reservoir (42) to the conduit (6) through passage (40), groove (28), a passage (36) and non-return valve (39). The dashpot device comprises a throttle screw (59) in a passage (57) connecting opposite sides of a piston (27) formed on the valve spool, and the return of the spool by its spring (33) is timed to equal that taken by the piston (4) for its working stroke whereby fluid is transferred from conduit (6) to reservoir (42) during substantially the whole of the stroke. Pressure is maintained in reservoir (42) by an auxiliary pump (45) driven by an electric motor controlled by a pressure switch.
Patent GB-1514915-A (GB)
Title: Hinges
IPC: E05D7/12
Filed: 1974-08-01
Abstract: 1514915 Hinge mountings CROMPTON NETTLEFOLD STENMAN Ltd 5 Aug 1975 [1 Aug 1974 20 Jan 1975] 33935/74 and 30360/75 Divided out of 1514916 Heading E2F In a hinge of the type in which two leaves 1, 2 are pivotally interconnected by a hinge pin 2, leaf 1, is designed to be attached to a component to be hinged and leaf 2 slidably engages in socket formed in a casing designed to be secured to the other component to be hinged; the casing being formed from inner 10 and outer 9 plates, the inner of which has a spring tongue which engages an aperture 5 in the leaf 2. A hole 21 in the outer plate allows the insertion of an implement 25 to depress the tongue 17 and release the leaf 2. Metal or plastics can be used. In other embodiments (Figs. 3-6 not shown) the hinge is modified to take heavier loads by the inclusion of a projection from the leaf 2 which engages over the plate 9. In another modification (Figs. 7, 8 not shown) the casing has an open end to provide access for the releasing implement. A spring hinge is disclosed as being mounted in the manner described (Fig. 9, not shown).