baber/WOPTO huggingface dataset:
Patent GB-292469-A (GB)
Title: Improvements in or relating to radio transmitting systems
IPC: H03B5/34
Filed: 1928-06-12
Abstract: 292,469. Westinghouse Electric & Manufacturing Co., (Assignees of Trouant, V. E.). June 18, 1927, [Convention date]. Keying and modulating systems; multiplex systems.-In systems in which the frequency of the oscillations generated is determined by the use of a vibratory device such as a piezo-electric crystal, signals are transmitted as slight variations in frequency by associating the key or microphone with an impedance in the generator circuit, instead of associating the key or microphone directly with the crystal electrodes, as in Specifications 275,581 and 287,459. As shown in Fig. 5, the drive oscillator 1 has the crystal 6 ,connected between its grid and filament, and across it are connected an inductance 5 and large condenser 7. The modulating-valve 15 is connected as a shunt to part of the coil 5, its plate being energized by a battery 16 through a coil 14. The microphone 18 is coupled through a transformer 19 to the grid circuit of the valve 15 which thus constitutes a variable resistance across a section of the coil 5. Alternatively, telegraph signals may be sent by a key 12 operating through a relay 11 to short-circuit the grid battery 20 and resistance 29, and so varying the grid voltage of the valve 15. Modulation is stated to affect the response frequency of the crystal to the extent of one-tenth of one per cent, but to leave the amplitude of the oscillations unaffected. Modifications are described in which (a) a key only or a microphone only is employed, o) the coil 14 is dispensed with and the plate direct current for the valve 15 passes through the lower section of the coil 5, (c) the coil 5 is connected in series with the condenser 7 between the grid of the valve 1 and the plate of the valve 15. Simultaneous telegraphy and telephony may be effected by employing frequency-modulation as described above for one message, and the usual . amplitude-modulation for the other message. The Specification as open to inspection under Sect. 91 (3) (a) also refers to modifications in which (a) the oscillator is of the Hartley type, (b) the plate circuit of the valve 15 includes the primary coil of transformer, the secondary of which replaces the coil 5, the inductance of this latter coil varying with the degree of saturation of the core. (c) As shown in Fig. 7, (Cancelled), the plate circuits of the oscillator 1 and modulator 15 are supplied from a common battery 30 through a common choke 31 and resistance 32. The oscillator grid circuit comprises the crystal 6 shunted by a bias battery 8 and grid leak 9, and is coupled by the grid-plate capacity to the tuned plate circuit 2, 3. Modulation by the microphone 18 or by the key 37 is stated to affect the response frequency of the crystal, and so to vary the radiated frequency. This subject-matter does not appear in the Specification as accepted.
Patent GB-530387-A (GB)
Title: Improvements relating to the landing-gear of aeroplanes
IPC: B64C25/00
Filed: 1939-06-10
Abstract: 530,387. Landing aircraft. ARMSTRONG WHITWORTH AIRCRAFT, Ltd., Sir W. G., and LLOYD, J. June 10, 1939, No. 17059. Drawings to Specification. [Class 4] An aeroplane has a tricycle-type of landing gear, the forward wheel or landing element being at a higher level than the rear landing wheels when in the landing position, and the rear wheels or landing members being so disposed that the initial reaction thrust of the landing surface on the rear wheels is just forwardly of the centre of gravity of the machine when landing, the arrangement being such that while receiving the landing shock such reaction thrust is transferred tc be well rearwardly of the centre of gravity of the machine. The apparatus employed is the same as that described in Specifications 530,386 and 530,388, and is abridged in respect of Specification 530,388.
Patent GB-547628-A (GB)
Title: Improvements in and relating to telegraphic transmission apparatus
IPC: H04L13/16
Filed: 1940-11-29
Abstract: 547,628. Telegraphy. HUHNE, H. PAUL-, PAINTON, J. E., and LONG, E. W., [Representatives of PAINTON, P. R.]. Nov. 29, 1940, No. 17078. [Class 40 (iii)] In a keyboard transmitter, the depression of a key connects the driving mechanism to a code roller which is oscillated to transmit the code signals. The code roller is driven through sun- and-planet gearing against the action of a spring, which returns the roller to its normal position when the code signal has been transmitted. The code drum 1 may have a series of discs 2 rigid therewith, each disc having two sets of code contacts 3, 3a. One or other of these sets of contacts is engaged by springs 33 or 32 carried by a pivoted block 34, the position of which is determined by a shift key 63 through link 34a. All the springs 32 or 33 engage the corresponding code discs, the particular code transmitted being selected by the depression of a character key 15, which moves upwards a corresponding switch-bar 18 so that a spring 21 a moves from an insulating part 21 to a conducting part. When the code drum rotates, the circuit is thus closed through the code disc, a spring 32 or 33, wire 61, spring 21a, and the conducting part of the selected switch-bar 18. The bar 18 is retained in its raised position by a notch 23 engaging a member 19 and by moving lever 44, 39, allows a spring to press lever 11 so that its tooth 10 tends to engage teeth 9 on the outside of the sun-and-planet gear 8. This movement is, however, prevented by a lever 49, 47 until the depressed character key is released, whereupon the tooth 10 arrests the outer gear of the sun-andplanet, causing the planets to rotate the code drum. The lever 47, 49 also prevents a second key being depressed until the code signal corresponding to the first key has been sent. After the signal has been transmitted, a pin 52 on the selected code disc engages the upper end of the selected switch bar 18 and restores it to normal. This results in tooth 10 being withdrawn from the sun-and-planet gear, and the code drum is returned to its normal position by a spring.
Patent GB-740843-A (GB)
Title: Means for displaying a sign on tractor drawn trailers
Inventor: EASTER EDWARD RICHARD
IPC: B60Q1/26
Filed: 1953-06-22
Abstract: 740,843. Luminescent materials; discharge lamps. FLUORESCENT ELECTRIC MANUFACTURING CO. June 22, 1953, No: 17226/53. Class 39 (1). [Also in Group XVIII] Means for displaying a sign on a trailer coupled to a tractor comprises a sign 10 disposed on the forward end of the trailer T<SP>1</SP> at a position visible above the top of the tractor T, the sign being delineated by fluorescent material, an electric discharge lamp U mounted on the real of the top of the cab of the tractor, and energized by a source of power on the tractor, and a filter 6 associated with the lamp for passing ultraviolet lays generated by the lamp to impinge on the sign. The discharge lamp comprises an opaque casing 1 having end walls 2, and a bonnet 3 shrouding the side of the casing 1 toward the front of the tractor. Longitudinal grooves 4 are provided at the edges of the bonnet 3 and bottom 5 of the casing 1 to receive the filter-plate 6 passing ultra-violet rays from the discharge lamp 7 supplied with current from the battery of the tractor T through a conduit 8. The casing 1 is provided with an electric heating unit 9 energized from the tractor battery.
Patent GB-154861-A (GB)
Title: Improvements in or relating to the delivery of molten glass
IPC: C03B7/16
Filed: 1920-06-25
Abstract: 154,861. British Kartford-Fairmont Syndicate, (Hartford-Fairmont Co.). June 25, 1920. Delivering molten metal.-In apparatus of the kind in which the separate charges are delivered by a trough 2 into the moulds 14, a curved deflector 1 is provided which directs the charge into the mould without deforming it. A lubricator 9 is provided to lubricate the surface of the deflector 1.
Patent GB-255627-A (GB)
Title: Improvements in or relating to means for building concrete and the like structures
IPC: E04G11/12
Filed: 1925-07-06
Abstract: 255,627. Lyne, R. J., and Midgley, C. A. July 6, 1925. Moulding walls in situ.-Shutters formed of flanged metal plates are attached to each other by their flanges and keys, the vertical joint of the plates being stiffened by bars f and the horizontal flanges by other bars f which are wider than the flanges. A stiffening angle h may be received between the bars f and the panels and bars may be secured together by shaped rotary pins e<1> and slots e. The bars h may be crossconnected by channel stiffeners i also secured to the bars by rotary pins e<1>. Fig. 3. The shutters may be further stiffened by intermediate flanged section bars a which are joined at their ends by strips d, Fig. 5. The section bars may be of V- or M-section.
Patent GB-772958-A (GB)
Title: Improvements relating to electromagnetic separating apparatus
Inventor: BOX WILLIAM EDWARD
IPC: B07C5/344
Filed: 1954-06-15
Abstract: 772,958. Magnetic separators. ELECTROMAGNETS, Ltd. March 31, 1955 [June 15, 1954], No. 17494/54. Class 117 [Also in Group XXXVI] In Figs. 1 and 3, an overband self discharging electromagnetic separator 11 and an electronic magnetic metal detecting device 12 are located above a belt conveyer 10 carrying matter, e.g. coal or flour, which may contain magnetic material. The detecting device, which is on the feed side of the separator, comprises coils 121, oscillator 13 and amplifier 14, and through a relay 15, is caused to influence means 16 which controls the supply of energizing current to the coils of the electromagnets 112 of the separator 11. If no magnetic material is present in the matter on the conveyer as it passes adjacent the detector coils 121, the electromagnets 112 are not energized. Presence of magnetic material, however, causes the electromagnet coils to be momentarily energized with high voltage current, and the resulting high intensity field causes removal of the magnetic material ready for discharge via a shoot 113. In Fig. 4, the separator 11 is as described in Specification 679,277, and in Fig. 5 (not shown), the separator is of the drum or pulley type. In a further modification, Fig. 6; a continuously operating separator 11 of low rating deals with the major magnetic constituents of the matter on the conveyer 'but minor constituents of magnetic material are detected and removed by the concurrent or consecutive operation of detectors 12 and suspended magnet type separators 11a. The coils of the electromagnets 112 need not be completely de-energized in the absence of magnetic material, in which case boosting of the energizing current when magnetic material is present is effected by voltage regulation of the multiple resistance or transformer tap changing type. The apparatus of Fig. 7 includes a non-ferrous material detector 12a so that when such material is detected, a shoot 17 is deflected to the dotted line position and the material is conveyed to an inspection station where the non- ferrous constituent may be removed.
Patent GB-515235-A (GB)
Title: Improvements relating to pumps and pumping systems
IPC: F04C19/00
Filed: 1938-06-13
Abstract: 515,235. Centrifugal-pumps. JENNINGS, I. C. June 13, 1938, No. 17543. [Class 110 (i)] In a water-ring pump primed by restoring the liquid displaced when pumping-action is stopped, the pump parts are cooled and seizure prevented during such stoppage by sealing liquid admitted from a bye-pass in the main supply line. The compresser 10 has inlet 15 and outlet 13 with air separator 11 having a pipe 19 to recirculate liquid. Sealing liquid is supplied by pipe 18 and drained by pipe 20. Valves 21, 27, 33 in pipes 20, 18, 13 are controlled by pressure from pipe 24 admitted by valve 25 which has a top area 39 larger than bottom area 38 so that its opening and closing pressures differ widely. Valves 27, 33 prevent admission of liquid and valve 21 opens the discharge. Valve 27 has a bye-pass 28 with manual valve 29 for cooling liquid. The main supply 18 has a strainer 50, Fig. 4, and the flow is controlled by a valve 51. The valves 21, 27, 33 may be operated electrically.
Patent GB-408833-A (GB)
Title: Improvements in and relating to the production of electrical heating elements and utensils for use at high temperatures
IPC: C22C19/05
Filed: 1933-06-20
Abstract: Electric heating elements and corrosion-resistant utensils for use at temperatures of about 1000-1200 DEG  C. are made of alloys containing not less than 32 per cent of nickel, 10.5-35 per cent of chromium and 0.05-2 per cent of one or more alkaline earth metals, with or without one or more of the metals iron, tungsten, molybdenum, cobalt, and manganese.  Specifications 220,710, 328,362, [both in Class 82 (i)], 382,573, and 384,291 are referred to.
Patent GB-294527-A (GB)
IPC: G06K13/04
Filed: 1928-06-19
Abstract: 294,527. Soc. Anon. A. Citroen. July 25, 1927, [Convention date]. Selective punching machines.- -In a machine for punching statistical cards the card is fed from a stack to the punching apparatus, and is then fed to an ejector mechanism, connected to the card carriage, which discharges the card from the machine. The card carriage comprises slides 1, 2, Figs. 2, 8, connected for differential movement by a cord passing over a pulley and provided with card clips 14, 15 respectively. The slide carries also a pivoted card-clip 16. The clip 15 picks the card from a stack, on actuation of a lever 4 attached to the slide 1, and as the clip is restored to its original position the clip 14 passes the card beneath the punching mechanism in steps determined by an escapement mechanism ejector. When the lever 4 is rotated clockwise, Fig. 5, alter punching, it turns a bell-crank 19 through a lever 22 to move a long lever 24, pivoted on a pin connected to a transverse cardslide 29. The card is forcibly ejected by movement of the slide. Escapement. A rack 55 attached to the slide 1 is normally in mesh with the escapement mechanism. When a tabulating key 37, Fig. 6, is depressed a lever 65 carrying a projection 64, Fig. 9, depresses a hook 63 on a pivoted plate 60 which cams apart a clutch between the rack pinion 56 and the escapement wheel 57, and the carriage, is then free to move. A frame 31. Fig. 6, pivoted on pins 33 bears slots 35 into which may be placed clips 36. On depression of key 37 a bell-crank 41 moves a roller 46 acting upon the back face of the frame to swing it about the pivots and project the clip into the path of projections 49 on the card-carriage. If a lever 38 pivoted to the key stem is actuated when the key is depressed the frame is not tilted. The escapement mechanism comprises a bail operated from the keyboard which swings a plate 67 carrying a tooth 72 about a pivot 68. A pivoted spring- urged tooth 73 is positioned opposite the adjacent lower tooth of the escapement wheel and is moved to active position when the tooth 72 is disengaged.
Patent GB-385608-A (GB)
Title: Heat exchange unit made of high grade chrome-nickel steels
IPC: F28D1/03
Filed: 1931-06-19
Abstract: 385,608. Radiators for heating buildings. BINDER, H., 19, Nerobergstrasse, Wiesbaden, Germany. June 19, 1931, No. 17796. Convention date, June 19, 1930. [Classes 64 (ii) and 64 (iii).] Steam - heating radiators and other heat .- exchange units are made of sheet members of high percentage chrome - nickel steel alloys having a form requiring little stretching of the sheet metal from which the members are made. The connecting branches b have a greater breadth than height to avoid stretching in their formation and preferably the point of greatest breadth is displaced towards the adjacent end of the member, as shown in Fig. 4. When these connecting branches are formed with flanges practically perpendicular to the member, as shown in Fig. 4, the material is drawn in from the space i and little stretching occurs. The thickness of the sheet-metal walls may be less than 1À5 mm. and the height of the branches may be more than 22 mm. Two of the members are electrically welded together at their edges to form each heat-exchange unit.
Patent GB-152432-A (GB)
Title: Improvements in clutch controllers
IPC: F16D23/14
Filed: 1919-07-16
Abstract: 152,432. Manton, J. S. July 16, 1919. Controlling clutches.-In means for ensuring the engagement without shock of friction clutches used in automobiles &c., a piston connected with the clutch-operating gear bears against a second piston, containing a counterbalancing-spring, through the intermediary of a fluid column, the escape of which is permitted after the pistons have moved through a predetermined distance. The clutch part 3 is operated for engagement by the usual internal spring and for disengagement by a pedal 13 secured on a spindle 14 which carries an arm 20 connected bv a motion-reducing linkage 24, 23, 26 to an arm 19 loose on the spindle 14 and engaging the clutch sleeve 8. The engaging-movement is controlled by a spring and fluid controller 27, to a crank 29 on a shaft 46 in which the link 24 is connected by an adjustable link 30; a pin on the arm 30 engages a hole in a plate which fits in the crank 29 and is replaceable by plates with holes differentlv situated. The shaft 46 carries an arm 56 linked to a piston 44 provided with a one-way valve 62 and with a port 27 co-operating with a small channel 64 leading to a space between the piston 44 and a piston 34 normally pressed against a stop 35 by a spring 36 bearing against a ball-ended stud 40 abutting against the casing 32. A long port 88 in the cylinder 34 always registers with a large passage 63 connecting the two ends of the cylinder. The passage 64 is adjustably controlled by a stud 68 screwing into the casing and locked in position by a pin 75 engaging a slot 76 in a member 78 provided with radial ribs on its underside engaging with corresponding ribs on the casing under the action of a spring 8<1>; a bush 72 and packing 73 prevent escape of the oil with which the whole casing is filled. During the clutch-disengaging movement of the pedal 13 the piston 44 is withdrawn from the piston 34, oil escaping freely past the valve 62, while the port 67 leaves the passage 64. When the pedal is released, oil trapped between the pistons 34, 44 causes both pistons to move together until the pressure of the spring 36 balances the pressure of the clutch spring, when motion stops, oil passing freely through the passage 63 during the operation. At this stage, the clutch surfaces are in non-driving contact and the port 67 reaches the passage 64. The oil between the pistons then escapes slowly through the passage 64, allowing the full clutch pressure to be applied gradually, while, at the same time, the piston 34 moves up to the stop 35. In order that the clutch pressure when once applied may be accelerated, the piston 44, Fig. 13, carries a pin 95 with a V-notch 96 passing through a circular hole 93 in the piston 43, so that, as the pistons 34, 44 approach each other, a gradually increasing leakage takes place through the hole. 93.
Patent GB-344311-A (GB)
Title: Improvements in and relating to turbogenerators
IPC: F01D25/28
Filed: 1930-06-10
Abstract: 344,311. Turbo-generators. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl Ufer, Berlin.) June 10, 1930, No. 17824. Convention date, June 10, 1929. [Class 110 (iii).] In a turbo-generator set comprising a turbine a and a generator b resting on metal supports c, d, the supports of the generator are heated, especially on starting, so that they expand upwards in the same manner as the turbine parts. The object is to prevent displacement of the shaft. The heating may be effected by steam led to spaces h in the supports d from the turbine exhaust conduit i by a valvecontrolled pipe l. The supports c, d form part of the condenser e, and waste steam and condensate pass from the spaces h to the condenser through a pipe m. The heating may be effected electrically.
Patent GB-1012728-A (GB)
Title: Triggered staple gap switch
IPC: H01T2/02
Filed: 1962-05-09
Abstract: 1,012,728. Spark apparatus. GENERAL ELECTRIC CO. May 9, 1962 [May 10, 1961], No. 17858/62. Heading H1D. A triggered spark gap has a pair of spaced main electrodes 11, 12, Fig. 1, within a container of gas at a pressure on the low pressure side of the Paschon curve, and a pair of trigger electrodes 25, 26 spaced a short distance apart by an insulator 21, Fig. 2, across the surface of which occurs a triggering surface discharge thus generating charged particles independently of the gas filling to complete a conductive path between the main electrodes and initiate the main discharge. The main electrodes may be of molybdenum or tantalum and the container is completed by ceramic parts 14, 19. Ceramic insulator 21 has a continuous metallized surface layer 22 of molybdenum and manganese on which are deposited the electrodes 25, 26 of titanium or molybdenum with the gap 24. The filling may be helium at 500 microns, nitrogen at 100 microns, air at 8 microns, krypton, xenon or hydrogen. In another form the positive electrode 42, Fig. 4, is hemispherical and the discharge gap 51 is between concentr elecictrodes 41, 50, Fig. 6.
Patent GB-126324-A (GB)
Title: Improvements in Elevating Mechanism for Ordnance.
Inventor: HEAP WALTER
IPC: F41A27/24
Filed: 1916-12-12
Abstract: 126,324. Heap, W. Dec. 12, 1916. Mountings for trench mortars.-Relates to elevating-gear, particularly for trench mortars, and of the kind in which is employed non-reactive epicycloidal gear comprising a gyrating pinion mounted on an eccentric and an internallytoothed wheel into which the pinion gears. The invention consists in employing two such epicycloidal gears in connexion with elevating mechanism of the kind in which a pair of pinions carried by the gun engage with fixed racks, the racks in the present invention being directly engaged by external teeth formed on the internally-toothed wheels of the said gears. The operating-shaft 4 on the gun 2 carries pinions 3 engaging with segmental racks 1 fixed to the gun platform. The pinions 3 are freely mounted on the operating shaft 4 and are driven through gyrating pinions 9 mounted on eccentric portions 10 of the operating shaft The pinions 9 engage internal teeth on the pinions 3 and are each prevented from rotating by a floating plate 14 having slots at right-angles to one another engaged by lugs 12 on the gyrating pinion and by lugs (not shown) on a fixed member. The fixed member is preferably in the form of a sleeve 5 frictionally clamped in brackets 6 on the gun and having cup-shaped recesses to accommodate the floating plates 14