baber/WOPTO huggingface dataset:
Patent GB-414034-A (GB)
Title: Improvements in or relating to air heaters
IPC: F24B7/02
Filed: 1932-10-22
Abstract: 414,034. Air-heating stoves. HARTMANN, M. & E., Freital, Saxony, Germany. Oct. 22, 1932, No. 29617. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 24, 1932]. [Class 126.] Air is heated by passage over a ribbed cylinder z internally heated at one end, the ribs r<1> on the exterior of the cylinder extending only over the hottest part of the cylinder and the internal ribs r<2> only over the less intensely heated parts thereof. A displacement body v is placed within the cylinder and may comprise a vertical fuel hopper or may be horizontal and receive a gas or oil burner. The ribs may be welded on and are largest at the hottest part. Flue gas passes off at n and heated air is drawn off at the base a of an external casing m. Several heating cylinders may be arranged above a common fire.
Patent GB-485836-A (GB)
Title: Ventilator or cowl and a process of manufacturing the same
IPC: F23L17/02
Filed: 1937-10-29
Abstract: 485,836. Chimney &c. tops. WOLF, G. Oct. 29, 1937, No. 29630. [Class 25] A chimney or like cowl comprises a top with a central uptake passage e a lower row of air inlet channels c each curving spirally upwards from an external opening to an opening g on the opposite side of the uptake e and either, as shown in Fig. 2, an upper row of oppositely curved passages d, or, as shown in Fig. 7, an upper row of straight upwardly inclined passages h.
Patent GB-577818-A (GB)
Title: Process for the production of benzene or its homologues
IPC: C07C15/02
Filed: 1939-11-09
Abstract: Benzene and its homologues are prepared by heating naphthalene or a homologue thereof with hydrogen under a pressure of at least 50 atmospheres to a temperature of 490-600 DEG  C. in the presence of tin or a tin compound as catalyst.  According to the example, naphthalene is treated in an autoclave with a large excess of hydrogen under 200 atmospheres pressure and at a temperature of 500 DEG  C., using basic tin acetate as the catalyst; the product comprises benzene, toluene and o-xylene.  A methylnaphthalene may be similarly treated.  Specification 283,600, [Class 2 (iii)], is referred to.
Patent GB-1183080-A (GB)
Title: Improvements in or relating to Cameras with Flashcube Mechanisms
IPC: G03B7/00
Filed: 1967-06-28
Abstract: 1,183,080. Photographic camera. IMPERIAL CAMERA CORP. June 28, 1967 [July 5, 1966], No. 29790/67. Heading G2A. A photographic camera comprises a flash cube socket rotatable by a disengageable coupling comprising spring fingers adapted to press into engagement with the socket and be rotated with a drive element by the film advance mechanism, a lock being provided to engage the socket at an intermediate point in the movement of the film advance mechanism and to hold the socket at this point during subsequent movement of the film advance, overcoming the pressure applied by the spring fingers. The film may be advanced by rotating a knob 28 attached by a shaft 44 to a sprocket element 42 which fits into a film cartridge 40 until a finger 18 senses a perforation in the film and pushes pawl 24 into engagement with a ratchet 26 on shaft 44 to prevent further rotation of knob 28; during rotation of knob 28 an end 34 of an arm 20 on which finger 18 is mounted is moved into an opening defined by shutter release 30 to prevent operation thereof until finger 18 is received in the next film perforation. Rotation of knob 28 also rotates the flash cube socket 58, 60 via the disengageable drive coupling element 52 which has spring fingers 54 which engage grooves in the socket, until a projection 68 of a stop member 64 engages one of four equally spaced recesses 62 in the socket to prevent further rotation of the socket. Backward rotation of the socket is prevented by pawls 88. After the film and socket have been advanced actuation of the shutter release 30 causes a cam 75 to rotate an arm 20 which causes a projection 76 to move the projection 68 out of recess 62, and which also moves finger 18 out of the film perforation so that the film may be transported and the socket rotated further by knob 28. An ejector 92, 94 for used flash cubes may be provided.
Patent GB-1158529-A (GB)
Title: Improvements in Semiconductor Rectifiers
IPC: H01L23/31
Filed: 1968-06-21
Abstract: 1,158,529. Alternators. NIPPON DENSO K.K. 21 June, 1968 [21 June, 1967], No. 29826/68. Heading H2A. [Also in Division H1] The all-enveloping plastics encapsulation of a semi-conductor rectifier extends through holes in a cooling plate acting as one electrode of the rectifier and preferably extends beyond the bounds of the holes on the opposite side of the plate to key the encapsulation to the plate. The encapsulant 20 may be continuous behind the plate 3 particularly in the multi-diode arrangement shown which forms half of a three phase bridge to be mounted in the airflow of a cooling fan within the housing of a motor vehicle alternator. The plates 3, 4 replace those of Fig. 1 (not shown) which carry rectifiers housed in a known way.
Patent GB-776989-A (GB)
Title: Improvements in or relating to carrier-wave signal-transmission systems
IPC: H04N11/12
Filed: 1954-10-15
Abstract: 776,989. Diplex radio signalling. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 15, 1954 [Oct. 19, 1953], No. 29827/54. Class 40(5) In order to reproduce at the receiver, free from cross-talk, the two intelligence signals in a diplex signalling system, said signals are passed through a path at the transmitter which gives rise to such crosstalk, the original signals are subtracted from the resulting signals to furnish signals representing the cross-talk and the latter, suitably adjusted in amplitude are subtracted from the original intelligence signals before they are transmitted. The invention is described as applied to a system in which the two intelligence signals amplitude modulate respectively the positive and negative half waves of a subcarrier which modulates the main carrier. In one embodiment, the two signals, which are arranged to be always of positive polarity, are applied respectively, to the multiplying stages 1, 2, Fig. 6, in which the multiplying sub-carriers are respectively the phase-displaced functions 1 + 2 cos 2# 0 t and 1 - 2 cos 2# 0 t where # 0 /2# is the highest frequency of the components of the signals which are to be transmitted. The outputs of stages 1, 2 are mixed in stage 3 to produce the sum of the first output and the second output with inverted polarity, which is fed to a low-pass filter 4 cutting off at a frequency of # 0 /2#. Theoriginal signals, together with cross-talk arising, are recovered respectively by oppositely-poled rectifiers 5, 6, followed by low-pass filters 7, 8. The cross-talk components of the first and second signals respectively are derived by subtraction in: circuits 9, 10 and amplified in circuits 11, 12 by a suitable factor to provide the correcting signals which are subtracted from the original signals in circuits 13, 14 respectively. The outputs of these stages are multiplied in stages 15, 16 respectively by the phase-displaced functions 1+2 cos# 0 t and 1 - 2 cos # 0 t and mixed in stage 17 to produce the sum of the first output and the second output with inverted polaritywhich is fed to the radio transmitter through a low-pass filter 18. In a further embodiment, two of the channels of a colour television transmitter have cross-talk correction circuits, Fig. 7 (not shown) and a receiver thereof is described, Fig. 8 (not shown. Specifications 676,670 and 680,783 [Group XL(b)] are referred to.
Patent GB-534301-A (GB)
Title: Improvements in and relating to handle bars for cycles, motor cycles and other machines
IPC: B62K21/14
Filed: 1939-11-10
Abstract: 534,301. Handle-bars. LECHMERE, W. F., and JAMES CYCLE CO., Ltd. Nov. 10, 1939, No. 29847. [Class 136 (iii)] The handle-bar 1 is surrounded by four rubber blocks 8a which line the inside of two clamp halves 2, 3, the half 2 being secured to the stem and the half 3 being secured to 2 by bolts 4. Fig. 4 is not a perspective view. Fig. 5 is an elevation of Fig. 4 from the right. A member 14 brazed on the handle-bar and engaging the surfaces 12 of the rubber blocks so as to force them apart and into engagement with beads 8 on the clamp halves 2, 3, prevents rotation of the blocks.
Patent GB-221124-A (GB)
Title: Improvements in or relating to pulverizers
IPC: B02C13/26
Filed: 1923-11-28
Abstract: 221,124. Lake, W. E., (Furnace Engineering Co.). Nov. 28, 1923. Impact pulverizers.-In a pulverizer for coal, ores, &c. in which beaters rotate at high speed within a casing through which air and the material being pulverized are caused to pass axially, means consisting of blade-like vanes, at most twelve in number, and therefore spaced substantially apart, are provided at one or more points in the axial length of the apparatus to obstruct the rotary or whirling motion of the air and material without obstructing its axial progress. In the horizontal machine shown in Fig. 1, the casing or drum 4 is divided into chambers 6, 7, 7<a>, the coal introduced by a hopper 8 being crushed in the first chamber 6 by rotary breakers or paddles 9 attached to a disc 10 secured to the shaft 3 and afterwards pulverized in the chambers 7, 7a by beaters or paddles 12, 15, which may be pivoted to discs 13, 16 secured to the shaft 3. The casing is provided with a lining 4<a> which, in the chamber 6, is ribbed. The annular plate 25 between the chambers 6, 7 has an opening 26 which is of less diameter than the paddles 9 and discs 10, 13. The whirl-obstructing vanes 27, 28 are arranged in the chambers 18, 18<a> between the chambers 7, 7a and the chamber 7<a> and the fan chamber 19 respectively. The chambers 18, 18<a> have peripheral annular walls 29, 30 extending inwardly from the casing 4. The radial blade-like vanes are arranged substantially edgewise to the progress of the air, but may be slanted. The vanes are attached at their outer ends to the casing and are shown as extending substantially to the shaft 3. Curved, instead of radial straight, blades may be used. The suction fan consists of a series of paddles 20 interconnected by annular plates or rings 20a and is carried on a disc 20b on the shaft 3. The fan chamber 19 has a spiral enlargement to the discharge opening 21, and additional air may be admitted through an opening 22 fitted with a shutter 23 adjustable by means of a screw 24. Fig. 5 shows a vemtical machine in which the coal &c. passes from the feed-hopper 8 down a tube 38 on the vertical shaft 3 on to a conical plate 40 which deflects it into the crushing-chamber 6. The beaters or paddles 9, 12 in the crushing or pulverizing chambers 6, 7 are mounted on discs 10, 13 secured to the tube 38, and the blade-like vanes 28 are provided in the discharge chamber 18 above the chamber 7. Peripheral annular walls 30 may be arranged between the chambers 7, 18 and between the chamber 18 and fan chamber 19. The vanes may be stationary, or they may rotate slowly in the opposite direction to the beaters.
Patent GB-520434-A (GB)
Title: Improved method of and apparatus for sublimating materials at a low pressure
IPC: C22B35/00
Filed: 1938-10-17
Abstract: 520,434. Distilling metals. MEYER, L. W. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Oct. 17, 1938, No. 30057. [Class 82 (i)] [Also in Group III] Volatile materials such as iodine and light metals such as ma'gnesium and beryllium are obtained by heating a charge consisting of their ores or compounds and reducing agents under reduced pressure in a high frequency induction furnace at over 1000C. and condensing the vapour on a metal surface the temperature of which is regulated by radiation. In the apparatus shown, the reaction vessel or crucible 1, which is mounted in a jacket 6 and heated by a coil 8, is surmounted by a cover 12 which may be blackened or provided with cooling ribs and from which is spaced a water-cooled dome 7. The apparatus is exhausted through a pipe 11 through apertures 10, 13, and the product is condensed against the cover 12.
Patent GB-504259-A (GB)
Title: Cements, concretes and mortars
IPC: C04B14/30
Filed: 1938-10-18
Abstract: 504,259. Cements, concretes, and mortars. BEAU, J. M. Oct. 18, 1938, No. 30114. Convention date, April 30. [Class 221 Finely divided magnetic oxide of iron, Fe3O4, is added to cement, e.g. Portland, natural or aluminous cement, or is incorporated in cement concretes or mortars at the time of mixing, to improve the properties, e.g. the impermeability, strength and resistance to wear and corrosion of the resulting concrete or mortar. The amount used is preferably between 5 and 35 per cent of the weight of the cement, but may be as high as 100 per cent. The oxide used is preferably the artificial magnetite produced by the reduction of sesquioxide of iron from residues produced in the roasting of iron pyrites.
Patent GB-536535-A (GB)
Title: Improvements in or relating to rescue apparatus
IPC: A62B1/02
Filed: 1939-11-15
Abstract: 536,535. Fire-escape lowering apparatus. GAZE, S. J. Nov. 15, 1939, No. 30129. [Class 78 (ii)] [Also in Group XXV] A fire-escape type of lowering-apparatus comprises an inclined hawser suspended between two fixed points and a slide member embracing the hawser and contacting therewith at two spaced points ; the slide member also being fitted with two sets of spaced ropes, chains, or the like for simultaneous engagement with the opposite ends of a stretcher. In the illustrated form, a tubular slide 2, Fig. 3, with upcurved ends, has stretcher-supporting chains 6 attached thereto at each end, and also opposed hauling chains 8. The slide is hauled to-and-fro on a hawser 9, Fig. 1, tensioned adjustably by pulley-tackle 22 and supported at the upper end by a window-appliance shown in Fig. 6. The latter comprises uprights 11 with telescopic feet which are spaced by cross-members 12 and either contact directly with the window frame or through the medium of an upper frame 25. Double clamps 14 allow adjustment of both the length and height of the members 12. As modifications the slide 2 may be U-shaped or may have runner wheels at one or both ends.
Patent GB-1354542-A (GB)
Title: Rolling of metal stock
IPC: B21B37/46
Filed: 1971-06-28
Abstract: 1354542 Rolling DEMAG AG 28 June 1971 [7 July 1970] 30134/71 Heading B3M  The ratio of the speed of rolls of two successive stands in a continuous rolling mill is adjusted to take into account the tension produced by longitudinal contraction of metal stock due to temperature losses. Current inputs to the roll drive motors 5, 6, 7 are transmitted via lines 11, 12 and 13 to a computer 10 which determines the actual torque applied to the rolls of each stand. The computer then subtracts the actual torque value for each stand from the torque which would exist between the stock and the rolls of each stand assuming that no tension existed in the stock due to heat losses, the latter value being determined from signals fed to the computer by pressure gauges 8, 18, 19 and from stored data. Thus the increment of torque applied to the rolls of each stand due to the tension existing in the stock can be determined. Assuming the rolls 2 are reference rolls, speed increments are added to the speed of rolls 3 and 4, a larger increment being added to the speed of rolls 4 than to that of rolls 3. In addition the speed of all the rolls can be increased so that additional energy is fed into the stock so that resulting temperature losses are reduced.
Patent GB-1236372-A (GB)
Title: Improvements in or relating to radio aerials for aircraft
Inventor: CALKIN JAMES QUINTARD
IPC: H01Q1/08
Filed: 1967-06-29
Abstract: 1,236,372. Aerials. HAWKER SIDDELEY AVIATION Ltd. 30 Sept., 1968 [29 June, 1967], No. 30150/67. Heading H4A. An aircraft aerial consists of a projecting raked back member having a streamlined crosssection. The member is flexible transversely but shows substantially no torsional deflection about its raked back longitudinal axis when the aircraft is in flight. As described, the aerial 14 tapers down from root to tip and comprises a thin stainless steel skin 17, a solid stainless steel spar 19, and a rearward honeycomb filling 18. Forward of the spar 19 is a space 20 which is available for mass balancing using, for example, tungsten powder set in a suitable resin. The longitudinal neutral axis of torsional flexure, the mass axis, and the axis of aerodynamic loading are arranged to coincide at 16. The member is in stable equilibrium in flight, aerodynamic forces operating to counter any lateral deflection.
Patent GB-305706-A (GB)
Title: An improved lock or like fastening device for a trunk or like case of variable capacity
IPC: E05B65/52
Filed: 1927-11-10
Abstract: 305,706. Cox, W. E. Nov. 10, 1927. Fastenings for bags and boxes; trunks; locks and fastenings. - A fastening for an expanding suit-case, trunk, box, or book comprises a hollow frame sliding in brackets 9 and consisting of outer and inner members 7, 10, the frame being locked to the brackets in adjusted position by a serrated bar 5 which is itself locked by a serrated bar 13 held by a key lock, the bar 5 being actuated by the handle ring 1. The ring 1 pivots in a sleeve 3 sliding on a bar 4 carried by the inner member 10 and when vertical forces over the bar 5 against a spring 22 so that the teeth 18 project through apertures in the outer member 7 and into apertures in the brackets 9. The member 7 may be marked at one end to indicate its position with respect to that bracket, the other end being flanged to prevent detachment from the other bracket. Bar 5 has lugs with notches 11 engaged by teeth 14 on the bar 13 which is released by a button 21 against the pressure of a spring 15, the key lock preventing such release.
Patent GB-484667-A (GB)
Title: Improvements in heat exchange plants suitable for supplying pressure fluid to engines
IPC: F02C1/05
Filed: 1936-11-05
Abstract: 484,667. Elastic - fluid turbines. KARRER, W. Nov. 5, 1936, No. 30185. Convention date, Nov. 11, 1935. [Class 110 (iii)] [Also in Group XXVII] A turbine T is operated by air raised to the desired pressure by heating at constant volume in apparatus comprising chambers VB<1>, VB<2>, VB<3> adapted to be connected in turn by valves J, L &c. to a circuit including ducts Rc, Rd, a fan V, and the tubes VA of a heat exchanger through the shell VC of which the products from a combustion chamber O into which the turbine exhausts pass to an outlet G. The chambers, together with the tubes VA and the ducts, constitute constant volume spaces for the air and exhaust in turn through the valves F, F<1>, F" to the turbine. The chambers are scavenged and refilled with fresh air by a fan or compressor X.
Patent GB-151231-A (GB)
Title: Improvements in electric insulators
IPC: H01B17/32
Filed: 1919-12-03
Abstract: 151,231. Haefely et Cie, Akt.-Ges., E. Sept. 13, 1919, [Convention date]. Insulators.-An electric insulator of the pin, suspension, or span-wire type comprises a tubular or solid core of insulating-material, provided with a metal cap at each end, and screw - threaded along its length to receive in series a number of insulating-units, whereby a proportionately longer leakage path of zigzag form is obtained, extending throughout the length of the screw-threaded passage. In the construction shown, a is a solid core composed of paper wound in layers with a suitable adhesive, on which the insulating-units care screw-threaded. Both ends of each insulating-unit are provided with metal bushings c, fitting tightly into those adjacent and into metal caps g at either end, and being soldered or otherwise secured as at f to prevent the entrance of moisture. The space between the insulating-units c and the core a may be filled with insulating-material. The metal bushings e constitute equipotential surfaces which serve to equalize the distribution of the electric field so that the difference of potential between the two ends of the insulator may be increased without risk of arcing. When the insulator is of the pin type, the lower metal .cap is constructed as a base-plate.
Patent GB-517005-A (GB)
Title: Improvements in grease lubricators
IPC: F16N11/04
Filed: 1938-10-19
Abstract: 517,005. Forced feed lubrication. THIRION, J. Oct. 19, 1938, No. 30268. Convention date, June 3. [Class 12 (iii)] The plug 14 on the end of a. member 15 attached to the spring-driven piston projects into the passage of parabolic section which flares outwardly so that the resistance produced by the passage of 14 decreases as the piston moves downward.
Patent GB-729920-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B15/88
Filed: 1951-12-28
Abstract: 729,920. Knitting-machines. LEBOCEY, R. G., LEBOCEY, B. J. E., COUSTE, J. H. J., and LEBOCEY, A. L. S. Dec. 28, 1951 [Dec. 28, 1950], No. 30297/51. Class 74 (2). A rotary cylinder and dial machine incorporates an improved machine frame, driving means, take-up device and fabric receiving device. The frame consists of three sections 1, 3, 5 having circular flanges 2, 8, 9, 10 respectively which are bolted to plates 11 serving to locate them and to support the working parts. The cylinder 17, dial and fabric receiving device are rotated by gears 28, 27 and 29 respectively on coupled shafts driven by a motor 31. An auxiliary motor 32 may drive the machine at slow speed through a worm-wheel connection 34 with the main motor shaft. The take-up mechanism comprises discs 57, 58 having interengaging castellated rims 71, 72 and carrying carding cloth. As the discs rotate with the work, they are oscillated by a stationary cam 52. Should the fabric be knitted at a slower speed than the take-up, the discs tend to rise against a spring 59 reducing pressure on a clutch 49, 50, 60 and permitting the cam 52 to revolve. The fabric receiving roll is carried on a shaft 61 and has beneath it a receiving tray 62. The tray 62 may either be slid clear of the machine on rails 63 to give access to the roll, or the roll may be released to rest in the tray and is then removed from the open lid of the tray.
Patent GB-818355-A (GB)
Title: Grid structure for electronic discharge tubes
IPC: H01J19/00
Filed: 1957-09-27
Abstract: 818,355. Thermionic valves. STANDARD TELEPHONES & CABLES Ltd. Sept. 27, 1957 [Sept. 29, 1956], No. 30330/57. Class 39(1). A grid structure comprises two grids mounted on opposite sides of an insulating frame, the lead-wires to the grids lying in grooves in said frame. In Fig. 1, the ceramic or mica frame 1 has on one side a grid of thin wires 2 acting as a control grid, and on the other side thicker wires 3 acting as a screen grid. The wires are attached by means of inlaid solder strips 4. The respective lead wires 6, 7 lie in a hole or groove. The two grids may have their wires aligned or perpendicular. In Fig. 7 (not shown), the grids are built into a tetrodepentode valve, of which the electrode-centring members may be metallic. The grids may be made by winding the first set of wires round two frames placed back to back, severing one frame from the other, reversing them, winding the other set of wires round them, and severing again.