baber/WOPTO huggingface dataset:
Patent GB-567091-A (GB)
Title: Improvements in or relating to the control of bomb dropping gear
IPC: B64D1/04
Filed: 1938-10-13
Abstract: 567,091. Electric switches. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., SIMPSON, L. M., and WOODLAND, C. R. Oct. 13, 1938, No. 29712. [Class 38 (v)] [Also in Group XXI] In distributer mechanism for controlling the release of bombs &c. from aircraft and comprising a brush traversing a series of fixed contacts so as to energize a number of bombrelease circuits in succession, the speed of the brush is varied in accordance with the speed of the aircraft and the desired spacing between bomb craters by adjustment of the gear ratio between the brush driving shaft and a governor shaft which rotates at constant speed. Adjustment of the gear ratio is effected by setting of a graduated dial 7 to effect axial, displacement of a friction wheel 10 between discs 11, 12, the latter being coupled to a governor 34. The disc 11 is mounted on a spring-biassed spindle driving the brush 18 and is serrated so as to be retained in a set position by a detent 9, which may be withdrawn manually by actuation of a knob 13 to permit initial movement of the brush spindle. to wind the spring 19. Release is effected by energization of a solenoid 14 which withdraws the detent 9 and allows the brush 18 to be swept over fixed contacts in the bomb-release circuits by the spring, 19 at a speed determined by the selected gear ratio between discs 11 and 12. To avoid sparking at the brush contacts, their circuits are completed through interrupter contacts 17 actuated by the serrations on the disc 11 (that are shaped to give a quick break), so that the circuit through the brush is open during its movement from one fixed contact to the next. A circuit comprising an indicating lamp is provided, whereby the bomb - release circuits may be tested in turn to discover whether all bombs have been released, a current-limiting resistance being connected in series with the lamp to prevent accidental release of a retained bomb by the test current.
Patent GB-723122-A (GB)
Title: Improvements relating to television apparatus especially television relay apparatus
Inventor: GARGINI ERIC JOHN
IPC: G01G13/28
Filed: 1952-12-08
Abstract: 723,122. Distributing music, &c. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Dec, 8, 1952 [Dec. 20, 1951], No. 29816/51. Class 40 (4). In a television relay system of the type in which vision signals and scanning signals are transmitted over a cable to a television receiver or receivers, the scanning signals are transmitted as modulation of a carrier wave the frequency of which is at least approximately an odd multiple of half the line frequency, so as to minimise interference caused by the carrier wave. As shown, the output of receiving channel 3 is applied in parallel to synchronizing signal and vision clipping circuits 5, 6. The output of clipper 6 feeds a scanning waveform generator 7, the output of which may be of the form described with reference to Fig. 3 of Specification 704,141. This waveform modulates a subsidiary carrier provided by oscillator 9, the frequency of which is 2.2325875 Mc/s. (viz. line frequency multiplied by 441 and divided by 2, with half the frame frequency added). The signals produced by modulator 8 are combined with the vision signal output of clipper 5 and the whole modulates a principal carrier wave of 5.4 Mc/s. The sidebands produced by the subsidiary carrier then fall mainly between the visionsideband zones. Filter 13 suppresses the upper sideband and the remaining signals pass over cable channel 14 to the receivers such as 2. There the signals are amplified, demodulated, and applied to the grid of amplifier tube 17. Filter 19, tuned to the subsidiary carrier, feeds the further demodulator 25, the scanning signal output of which is amplified and applied to the scanning circuit which may be of the type described with reference to Fig. 2 or Fig. 4 of Specification 704,141. Vision signals are applied from a tap on potential divider 20 to the control electrode of the cathode ray tube. The subsidiary carrier wave and its sidebands cause modulation of the cathode ray beam, but as the subsidiary carrier wave is approximately an odd multiple of half the line frequency, the interference pattern produced is largely self-destructive. The invention may be applied to apparatus of the type described in Specification 723,123 in which alternative television programmes are simultaneously distributed.
Patent GB-1171197-A (GB)
Title: Improvements in Hinges for Window Sashes
Inventor: BENGTSSON SIGURD WALTER
IPC: E05D7/085
Filed: 1967-06-28
Abstract: 1,171,197. Hinges and pivots. S. W. BENGTSSON. 28 June, 1967, No. 29865/67 Heading E2F. A bearing device for pivoted windows includes a pair of bearing plates A, B having co-operating pin 21, 22 and seating means 12, 13. each plate fixed to the frame having a portion which projects from the plane of the frame and has an arcuate upper end wall portion 18, a draught-excluder strip 25 abuts the frame 10 and has an end portion which extends over the gap between the frame and sash 11 and the frame plate A is provided with a shoulder 27 projecting toward the draughtexcluder strip sufficiently to close the gap between the strip and plate in the closed position. The bearing device may be of the doublepivot kind described in U.K. Specification 784,280. The shoulder may be formed integrally with the frame plate or, in another embodiment, the shoulder may be provided on a casing moulded from a synthetic plastics material and adapted to be affixed to and cover the projecting portion of the frame plate.
Patent GB-364187-A (GB)
Title: Process for the manufacture of nitro arylamino derivatives of leuco sulphuric acid esters of anthraquinonoid and indigoid compounds
IPC: C09B9/04
Filed: 1930-10-07
Abstract: Leuco compounds of anthraquinonoid and indigoid compounds, esters of.--N-substitution products of leuco sulphuric esters of anthraquinonoid and indigoid compounds containing amino groups are obtained by treating the esters with nitrohalogenaryls, containing labile halogen, in the presence of acid-fixing agents. In examples (1) the potassium salt of the leuco sulphuric ester of b -aminoanthraquinone is condensed with 2 : 4-dinitrochlorbenzene in presence of magnesia; the product, when treated with acid oxidizing agents on the fibre, gives fast yellow shades; (2) the sodium salt of the leuco sulphuric ester of 5-aminoindole-4<1>-chlornaphthalene-indigo (made by coupling 5-nitroisatin chloride with 4-chlornaphthol, esterifying the product as described in Specification 360,958, and reducing in an alkaline medium) is similarly condensed with 2 : 4-dinitrochlorbenzene; the product, when oxidized on the fibre, gives fast olive-green shades; (3) the leuco sulphuric ester of 2-(5-aminoindole)-2<1>-anthraceneindigo (made from 5-nitroisatin chloride and a -anthrol, by the process described in example (2)) is condensed with 4 : 4<1>-dichlor - 3 : 3<1> dinitrodiphenylsulphone; the product, when oxidized on the fibre, dyes in olive-green shades; (4) the leuco sulphuric ester obtained by condensing 5-nitro-3-oxythionaphthene with the p-dimethylaminoanil of 4 : 5-benzo-3-oxythionaphthene, and esterifying and reducing the product, is condensed with 2-nitro-1-chlorbenzene-4-sulphodimethylamide or with p  1-chlor-2-nitrobenzene-4-carboxylic dimethylamide; products giving violet-brown shades when treated with acid oxidizing agents on the fibre are obtained; and (5) the leuco sulphuric ester of 5-amino-6<1>-methoxy-bis-thionaphtheneindigo (made by the method described in example (2) from 5-nitro-3-oxythionaphthene and the p-dimethylaminoanil of 6-methoxy-3-oxythionaphthene) is condensed with 2 : 4-dinitrochlorbenzene; the product, when oxidized on the fibre, gives reddish-brown shades.  The leuco sulphuric ester obtained by condensing a reactive a -derivative of 4-nitro-8-chlor-1 : 2-naphthisatin with a -anthrol, esterifying as described in Specification 360,958, and reducing, gives greenish-grey shades when oxidized on the fibre.  The process may also be applied to leuco sulphuric esters containing several amino groups, for example to the leuco sulphuric ester obtained by condensing a reactive a -derivative of 5-nitroisatin with 5-nitro-3-oxythionaphthene, esterifying as described in Specification 360,958, and reducing the nitro groups. This ester gives, on condensation with 2 : 4-dinitrochlorbenzene (2 mols.) a product dyeing in green shades after acid oxidation on the fibre.  2-Nitro-1-chlorbenzene-4-sulphodimethylamide is made by treating o-nitrochlorbenzene with chlorsulphonic acid to form 1-chlor-2-nitro-4-sulphochloride and treating the latter with aqueous dimethylamine.
Patent GB-509285-A (GB)
Title: A device for starting internal combustion engines especially diesel aero-engines
IPC: F02N7/00
Filed: 1938-10-18
Abstract: 509,285. Turning - gear; starting. MASCHINENFABRlK AUGSBURG-NURNBERG AKT.-GES. Oct. 18, 1938, No. 30166. Convention date, Oct. 21, 1937. [Class 7 (v)] An engine starter, particularly for diesel aero-engines, comprises a combustion turbine 1 adapted during normal running to drive a supercharger 8 or other engine auxiliary and being normally driven by exhaust gases from the engine; for starting purposes, the turbine is driven by gases from a combustion chamber 11 and is placed in driving connection with the engine through the medium of gearing 2, 3 or a fly-wheel or an air compressor for supplying air under pressure to the engine to cause its initial rotation. As shown, a valve 10 enables the turbine 1 to be put in communication either with the chamber 11 or the engine exhaust pipe. The gear 3 is provided with a disengageable clutch and may be formed as a fly-wheel. During the starting period, the cooling water, lubricating oil or fuel for the engine may be heated in a jacket 13 on the turbine 1 and also in a jacket on the chamber 11.
Patent GB-1513756-A (GB)
Title: Demodulator
IPC: H04L27/14
Filed: 1975-07-18
Abstract: 1513756 Data transmission; FSK systems TELECOMMUNICATIONS RADIO-ELECTRONIQUES ET TELEPHONIQUES 18 July 1975 [23 July 1974] 30216/75 Heading H4P In an FSK demodulator of the type comprising a cascaded arrangement of a monostable circuit operable by edges of a rectangular signal corresponding to an FSK frequency, a low pass filter, a decision circuit receiving the filter outut and a threshold voltage for restoring the data signal contained in the FSK input, according to the level of monostable output a switching circuit 7 applies one of the two voltages of opposite polarity relative to the threshold to the low pass filter. An arrangment adjusts the magnitude of at least one of the voltages for correcting bias distortion in the restored data signal. In the embodiment disclosed the two voltages may be derived from the same source through inverting and non-inverting amplifiers 8, 9, the voltage adjustment being obtained by varying the gain of one of the amplifiers. The pulse duration of the monostable circuit may be adjusted instead of the one or both voltages which is then maintained at constant magnitude. The monostable circuit 2 responds to each edge of FSK signals, say f0 or f1, so that its output frequency is 2f0 or 2f1 respectively. LP filter 3 output has a level corresponding to the mean input level i.e. a low level at f0 and a high level at f1. In decision circuit 4 i.e. an amplifier the low/high signal is compared with threshold voltage Vs=earth potential. If the output signal from 4 is distorted this may be eliminated by adjusting the gain of one of the amplifiers 8, 9 or the duration of pulses from circuit 2. Amplifiers 8, 9 may be combined into a single amplifier whose gain may be switched. In Fig. 5 (not shown) a feedback amplifier 10 has one input connected through resistor 13 and the other through resistor 14 which may be grounded by a transistor 15 controlled by the output of monostable circuit 2. When monostable circuit has an output B0 close to zero, amplifier gain k 1 = 1 and when monostable output has level B 1, the amplifier has a gain proportional to values of:
Patent GB-536728-A (GB)
Title: Improvements in or relating to magazines for automatic fire arms
IPC: F41A9/69
Filed: 1939-11-17
Abstract: 536,728. Automatic guns. DOBREMYSL, J. Nov. 17, 1939, No. 30242. [Class 92 (ii)] A cartridge magazine of the box type has two or more parallel channels such as 1, 2 arranged next to one another each channel holding cartridges in a double row and all the channels being in open communication with a common mouthpiece 3 accommodating cartridges in a double row. The feeders 8 are spring pressed in the usual manner and each is provided with a recess containing an auxiliary feeder 10 pressed by a weak spring 11 to complete the feed after the main feeder 8 has moved into contact with the ledge 12.
Patent GB-1395841-A (GB)
Title: Hydraulic vibrator
IPC: G01V1/155
Filed: 1973-06-26
Abstract: 1395841 Vibrators CONTINENTAL OIL CO 26 June 1973 30313/73 Heading F2X An hydraulic vibrator has a fixed vertical piston member 14 comprising a pair of oppositely extending rods 24, 26 connected to a centrally disposed drive piston 28 and a reaction mass 16 disposed around the drive piston 28 to form an hydraulic cylinder 30. Hydraulic fluid is fed from a central valve 44 via passageways 36, 38 and ports 32, 34 first to one side and then to the other of the drive piston 28 so causing the reaction mass 16 to reciprocate. Means for biasing the weight of the reaction mass 16 comprise a biasing cylinder 46 formed between an upwardly facing shoulder 48 on the rod 26 and a downwardly facing shoulder 50 on the reaction mass 16. The shoulder 50 may be provided by the lower end of a conventional annular sleeve insert 51 secured within the reaction mass 16. One or more ports 52 are provided in the rod 26 above the shoulder 48 for the introduction of hydraulic fluid to the biasing cylinder 46. A passageway 54 connects the port(s) 52 with a source of constant pressure hydraulic fluid by way of the control valve 44. As the reaction mass 16 reciprocates, so constant pressure hydraulic fluid is ported to and from the biasing hydraulic cylinder 46. The relative areas of the annular shoulders 48, 50 are sized such that the weight of the reaction mass 16 is offset by the upward force generated in the cylinder 16 by the constant pressure hydraulic fluid.
Patent GB-189762-A (GB)
Title: Improvements in automobile chassis
IPC: B60G15/04
Filed: 1922-11-06
Abstract: 189,762. Dumont, G. Nov. 26, 1921, [Convention date]. Axle structures; axle distance members.-The driving and the steering wheels of a motor vehicle are carried by stub axles rotatably mounted in bearings in independent casings pivotally connected at the bottom to one or more transverse springs, vibration dampers being interposed between the top of each casing and the chassis. As shown in Figs. 1 and 2, the driving wheels are carried by stub-axles 4 mounted in bearings 5, 6 in casings 7 provided with downwardly and upwardly projecting arms 8, 12. The arms 8 are formed with spherical heads 8<1> mounted in caps 9<1> at the ends of a spring 9 secured at its centre to the gear casing 10 which is fixed to the frame 1. Each arm 12 carries a longitudinal rod 12<1> with hemispherical ends 12<11> which engage caps 13<1> on links 13 formed with conical &c. discs 13<11> engaging friction surfaces 14<1> on cones &c. 14 secured to a rod 17 fixed at one end in the frame 1. The discs &c. 13<11> are held against the friction surfaces 14<1> by springs 22. The free end of the rod 17 is connected to the casing 10 by an adjustable rod 19 so that the wheels may be brought into parallel planes. Each end of the transverse spring 9 is connected to the frame 1 by a distance member 16 consisting of a flexible blade secured to the frame at 16<11>. The suspension of the steering wheels is of a similar nature except that the upwardly projecting arm 12 of the casing 7 terminates in a ball 12<1>, Fig. 4, engaged by the cap 13<1> of the links 13. The adjusting rod 19 is also omitted, the rod 17 being rigidly secured to the frame.
Patent GB-611731-A (GB)
Title: Improvements in or relating to control circuits for relaxation oscillators
IPC: H04N5/12
Filed: 1945-11-13
Abstract: 611,731. Pulse-generating circuits. PHILCO RADIO & TELEVISION CORPORATION. Nov. 13, 1945, No. 30389. Convention date, Aug. 2. 1944. [Class 40 (vi)] In order to avoid transient and other disturbances, a multivibrator oscillator circuit comprises means responsive to a control signal, for rendering the oscillator operative after a time delay. Valves T2 and T3 in Fig. 1, provide a conventional multivibrator circuit, the operation of which is controlled by valve T1. The anode supply of valve T1 is-supplied via the grid resistance 14 of valve T2 and a tapping on resistance 23; resistors 23 and 22 connect the common cathode point of valves T2 and T3 to a source of positive potential. Cathode bias for valves T2 and T3 is provided by resistance 15. Under steady conditions, valve, T1 is conducting, the anode current flowing through resistance 14 which applies a negative bias to the grid of valve T2, preventing this valve from conducting; valve T3 is conducting at this stage. If a negative timing pulse is applied at point 25 to cut-off valve T1 the negative bias is removed from valve T2 after a time delay dependent on the condenser resistance circuit 17, 14, and the multivibrator circuit then commences to oscillate, oscillations being maintained throughout the period of the timing pulse. At the end of the pulse, negative bias is again applied to the grid of valve T2, stopping the multivibrator action. Resistance 12 in the cathode lead of valve T1 is made variable to control anode current, and thus the time delay period. The tapping on resistor 23 enables the frequency of the multivibrator to be controlled. A modification provides for the grid resistors 14 and 19 to be connected to a separate supply, or for the grid of valve T1 to be connected to ground.
Patent GB-702534-A (GB)
Title: Improvements in or relating to sound-wave-ranging apparatus
Inventor: SMYTH CHARLES NORMAN
IPC: B06B1/06
Filed: 1950-12-13
Abstract: 702,534. Piezo-electric instruments. BIRMINGHAM SMALL ARMS CO., Ltd. Dec. 12, 1951 [Dec. 13, 1950], No. 30396/50. Class 40 (4) [Also in Groups XXXVIII and XL (b)] A combined transmitting and receiving transducer for sound-wave ranging by the pulseecho system comprises a circular piezo-electric crystal 1 diametrically divided into two D- shaped sections 1a and 1b mounted in an earthed metal cup 2 containing a plastic material 4 (such as polyvinyl chloride) which serves to hold two plate-like electrodes 3 against the underfaces of the respective crystal sections, one being connected to a pulse generator and the other to a receiver amplifier. A circular diaphragm 5 is diametrically grooved at 6 and may be secured against or adjacent the crystal 1 by a band clip 7 located by the engagement of a pin 8 with a slot 9. A screen 10 connected to the cup 2 is disposed between the sections 1a and 1b In a modification, Fig. 2 (not shown), the crystal is divided into a central disc for connection to a pulse generator and surrounding annulus for connection to a receiving amplifier. The electrodes may be evaporated or sputtered on to the appropriate crystal surface, and also serve to damp crystal oscillations and give a rapid decay after energization.
Patent GB-736761-A (GB)
Title: Improvements relating to regulating linkage for motor vehicles
IPC: B60K26/04
Filed: 1953-11-04
Abstract: 736,761. Controlling vehicles. DAIMLERBENZ AKT.-GES. Nov. 4, 1953 [Nov. 4, 1952], No. 30496/53. Class 79(5). In a vehicle having a resiliently mounted engine, the accelerator linkage comprises a substantially transverse shaft 16 having an arm 17 connected to the accelerator pedal 19 and another arm 15 connected by a longitudinal linkage 12, 13, 14 to the throttle valve 10, the shaft being supported non-resiliently, or with only slight resilience, at one end and yieldably at the other end. In the preferred embodiment the shaft 16 is carried in bearings 23, 24 on the vehicle body, the bearing 23 including a rubber bush 231 and the bearing 24 being connected by a spring 26 to the body. The bearing 24 is also connected to the shaft 12 by a link 25. The arrangement is such that movement of the engine unit and throttle in the direction x relative to body is accommodated by horizontal pivotal movement of the shaft 16 about the bearing 23, which is arranged in the plane of the pedal 19, so that the valve 10 and plate 19 remain in the same relative positions. Movement of the engine unit in the direction z and y are also accommodated. Various modifications are described with relation to Figs. 2 to 7 (not shown).
Patent GB-628589-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D1/143
Filed: 1946-10-14
Abstract: 628,589. Cutting slices in succession. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO., Ltd. Oct. 14, 1946, No. 30501. Convention date, Sept. 12, 1942. [Class 28(ii)] In a slicing machine of the type having the substance carrier in two parts, namely a carrier component and a longitudinally guided support component, the two are interconnected to from a rigid structural unit by male and female joint members, and are disconnectible by lifting the carrier component. As shown the longitudinally guided support 15 has two upright pins 20, 21 as the means for attaching the carrier 10. The pins 20, 21 fit exactly into a similarly spaced pair of holes 22, 23 on the underside of the carrier 10. The pins and sockets are made vertically, the pin 20 being larger than 21. Specification 438,208 is referred to. In the Specification as open to inspection under Sect. 91 the pins may be provided on the carrier 10 or a single pin and hole only may be provided of square or other non-circular cross-section so as to prevent rotation of the two components. This subject-matter does not appear in the Specification as accepted.
Patent GB-771665-A (GB)
Title: Improvements in and relating to the frame of dynamo-electric machines
IPC: H02K9/06
Filed: 1955-10-26
Abstract: 771,665. Cooling dynamo-electric machines. GENERAL ELECTRIC CO. Oct. 26, 1955 [Oct. 27, 1954], No. 30657/55. Class 35. A machine has a large part of the stator core periphery engaged by the arcuate part of a base member which also has cooling passages, other parts of the core being engaged by spaced ribs, as shown, air is sucked through inlets 14a at each end of the machine by fans 18 on the rotor and some passes via end windings 13 to the outer periphery of the stator core, as shown by arrows 21 while the remainder flows, as shown by arrow 21a to cool the base, the arcuate part 26 of which receives heat directly from the stator core. The air reaching the spaces 30 between the ribs 27, 28, 29 flows circumferentially towards the feet of the machine where it leaves by outlets 32, the ribs 27, 29 being apertured or recessed to permit the circumferential flow. If operation as a closed machine is desired, the inlets and outlets can be joined together.