baber/WOPTO huggingface dataset:
Patent GB-543224-A (GB)
Title: A process for the catalytic halogenation of unsaturated organic compounds
IPC: C07C17/10
Filed: 1940-08-13
Abstract: 543,224. Halogenating unsaturated compounds. SHELL DEVELOPMENT CO. Aug. 13, 1940, No. 12954. Convention date, Sept. 30, 1939. [Class 2 (iii)] The halogenation by substitution or addition of unsaturated compounds such as olefines (which may have aryl or aralkyl substituents or may be partially halogenated) a large number of which are mentioned, is effected in the presence of organic free radicles or of substances which liberate free radicles under the re-action conditions. The halogenation takes place at lower temperatures than without a catalyst. The initial materials are mostly of primary or secondary type but with tertiary type olefines, which readily halogenate by substitution, the free radicles induce halogenation by addition. Suitable catalysts are triarylmethyls, trialkylmethyls, compounds containing di- or. tetravalent nitrogen, and compounds containing univalent oxygen or sulphur. Compounds producing free radicles are azocompounds such as azobenzene, diazomethane, azodiisopropane, azoisopropane, peroxides such as benzoyl and lauroyl peroxides, and organometallic compounds of which many are mentioned. In examples ethylene and propylene are chlorinated in the presence of tetraethyl lead. Specifications 289,795 and 296,021, [both in Class 2 (iii)], are referred to.
Patent GB-1428913-A (GB)
Title: Electrostatic transducer and method and means for making same
IPC: H04R19/00
Filed: 1974-03-23
Abstract: 1428913 Electrostatic transducers ELECTROSTATIC RESEARCH CORP 23 March 1974 13005/74 Heading H4J An electrostatic transducer comprises a pair of annular frames 22 clamping a high resistivity coated diaphragm 12 at its centre 14 and rim 16 and each carrying an electrode in the form of a flat spiral of sheathed conductor 112. An intermediate diaphragm region may also be clamped by an annular rim 26 extending above ribs 24 to which the electrode is attached by epoxy 40. The conductor 112 and a spacing wire 118, Fig. 4, are wound together in one or more annular chambers defined by mating parts 52, 54, 56 of a winding jig so that the conductor turns are evenly spaced. A wax coating on surface 64 of jig part 52 is melted by the passage of current in conductor 112 to temporarily hold the coil. The jig is dismantled and part 52 assembled with a frame 22 whose electrode support ribs 24 are coated with epoxy which is subsequently cured to affix the electrode and wax melted to release the jig part 52.
Patent GB-940166-A (GB)
Title: Improvements in or relating to pneumatic motors
Inventor: FAIVELEY LOUIS
IPC: F15B15/14
Filed: 1961-04-11
Abstract: 940,166. Fluid pressure apparatus. ETABLISSEMENTS L. FAIVELEY. April 11, 1961, No. 13036/61. Heading F1P. A pneumatic motor for controlling a sliding door comprises a first cylinder 1 in which operates a hollow floating piston 16 forming a second cylinder having slidingly disposed therein a motor piston 26 which is attached to the door by a piston rod 31, chambers 32 and 43 within the floating piston 16 being in respective communication with chambers 33 and 42 in the first cylinder 1 by means of orifices 24 and 25 controlled by valves 22 and 23; compressed air from a feed pipe 35 is selectively fed under the control of electro-valves 34 and 38 to the chambers 33 and 42 in the first cylinder 1, the valves alternatively being used to connect the. chambers 33 and 42 to pipes 37 and 39 leading to the atmosphere. The supply of compressed air to and exhaust of the air from the chambers 33 and 42 are respectively controlled by adjustable needle valves 5 and 10 and ball valves 4 and 9. When the rod 31 is to be moved from the retracted position thereof, shown in Fig. 1, to its extended position, valves 34 and 38 are operated so as to put the chamber 33 in communication with the compressed air feed pipe 35, and the chamber 42 in communication with the pipe 39 leading to the atmosphere. Compressed air in the chamber 43 of the floating piston 16 is trapped therein by the valve 23 so that both the floating piston 16 and the motor piston 26 move as a unit towards the right hand end of the first cylinder 1 at a speed determined by the setting of the needle valve 5. When the floating piston 16 reaches the end of cylinder 1 the valve 23 is opened allowing the piston 26 to move further to the right relative to the piston 16 at a speed determined by size of the orifices 24 and 25. A similar operation takes place when the piston rod is retracted. In a second embodiment, Figs. 3 and 4. (not shown), each pair of the valves 4 and 5 and 9 and 10, respectively, are replaced by a single valve having a small orifice in the centre thereof, exhaust of air from the cylinder 1 taking place by the lifting of the single valves from their seatings and supply of compressed air to the cylinder 1 taking place through the central orifices, and valves 22 and 23 are dispensed with, the orifices 24 and 25 being of smaller size.
Patent GB-898498-A (GB)
Title: Process for the production of xanthocillin
Inventor: BAERWALD GERHARD
IPC: C12C/
Filed: 1960-04-12
Abstract: The antibiotic xanthocillin is produced by growing a culture of Penicillin notatum Westling in an aerated and stirred submersion culture at a temperature of 24 DEG C.-30 DEG C. until the mycelium is broken down, and the antibiotic liberated by the breakdown of the mycelium precipitated in the culture solution, together with residues of the mycelium and other solid constituents, is separated from the culture solution and worked up in a manner known per se.
Patent GB-1310337-A (GB)
Title: Scanner for distinguishing between background and intelligence  areas on a document
IPC: H04N1/403
Filed: 1971-05-05
Abstract: 1310337 Facsimile apparatus XEROX CORP 5 May 1971 [6 May 1970] 13144/71 Addition to 1265034 Heading H4F  In a modification of the circuitry described in the parent Specification, wherein the signal from a photo-transistor 100 is amplified, 106, clamped at one signal limit, and compared, 136, 136, with a reference level 104 to variably charge a capacitor 110 and hence control the drain-source impedance R DS  of a field effect transistor 104 according to the signal level, the gain of amplifier 106 is fixed but R DS  forms a variable shunt path across the amplifier input and the photoreceptor load resistance 102 whereby the degree of amplification of the photo-transistor signals at the output of amplifier 106 is controlled. A high sensitivity photo-transistor 100 which may be considered to be a current source will generally have an associated capacitance which is greater than that of a less sensitive phototransistor and hence will respond more slowly for the same load impedance, while finally giving a greater signal level. By varying the load presented to the transistor 100 as shown, variations in photo-transistor sensitivity affect the output signal level response time to a reduced extent.
Patent GB-633649-A (GB)
Title: Improvements in and relating to brick making
IPC: B28B13/04
Filed: 1947-05-16
Abstract: 633,649. Separating and removing green bricks after cutting. QUEENSMERE PROPERTIES & INVESTMENTS, Ltd., and CROOK, C. May 16, 1947, No. 13237. [Class 87 (ii)] [Also in Group XXX] A machine for separating newly cut bricks before drying comprises a table, onto which a row of bricks is delivered from the cutting machine, made up of a number (ten as shown) of separate elements 10 slidable on a pair of parallel rods 12 and each of a size to accommodate a single brick. The elements are interconnected by lost-motion devices comprising a depending flange 14 on each element adapted to engage an upwardly projecting flange 18 on a bracket 17 secured to an adjacent element. One of the centre elements has an additional bracket 20 with upwardly projecting flange 18 to engage the flange 14 on the adjacent centre element. The outermost elements 10 are continuously reciprocated through link systems 27 ... 32, 33 ... 36 by a pair of crank discs, one shown at 26, driven by a motor 22. In the innermost position of the elements they receive. a row of newly cut bricks and in their outermost position the bricks are removed by a pair of tables 56 engaging beneath the ends of a pair of pallet boards 37 extending beyond the separating device and housed beneath the bricks in grooves in the elements 10. The tables 56 are lifted by a parallel link device 54, reciprocated by a motor 40 through a link 44 and crank disc 42, to a position immediately above one of several pairs of arms 58 on a vertical hoist which then moves upwards to transfer the pallets from the tables 56 to the arms 58 and to bring the next lower pair of arms into position. The separator is operated continuously and the tables 56 and hoist intermittently, pallet boards being placed on the separating table by hand as required. When the hoist is full the pallets are simultaneously removed therefrom by a finger car having fingers at appropriate levels to engage beneath the pallets on the hoist. The truck removes the pallets to a drying oven and the hoist is lowered for reloading.
Patent GB-868485-A (GB)
Title: New cyclohexane derivatives, intermediates for the synthesis of reserpine
IPC: C07D493/08
Filed: 1957-10-30
Abstract: The invention comprises laevo-rotatory 1b -carboxymethyl- 2b - methoxycarbonyl- 3a -methoxy-4b - acetoxy -6b - formyl-cyclohexane its dextrorotatory isomer and its laevo-rotatory methyl ester, together with processes for their preparation by treating the laevorotatory or dextrorotatory methyl ester of 3b -acetoxy-3a -methoxy-7-oxo- 1,2,3,4,4aa ,7,8, 8aa - octahydronaphthalene-1b -carboxylic acid with ozone at between 0 DEG C. and -60 DEG C., thereafter converting the resulting ozonide to l-(or d-) 1b -carboxymethyl-2b - methoxycarbonyl-3a - methoxy-4b -acetoxy -6b -formylcyclohexane (a) by the action of water, iodic acid or periodic acid or (b) by reducing the ozonide with zinc powder and acetic acid and then oxidising the product with chromic or periodic acid, and subsequently esterifying the free carboxyl group of the l-compound with diazomethane in methylene chloride-ether.  Detailed examples are given.  Specification 868,483 also is referred to.
Patent GB-674895-A (GB)
Title: Improvements in or relating to piezo-electric crystals
Inventor: BECHMANN RUDOLF
IPC: H03H9/02
Filed: 1949-05-18
Abstract: 674,895. Piezo - electric crystals. POSTMASTER GENERAL. May 3, 1950 [May 18, 1949], No. 13271/49. Class 40 (viii). A crystal element consists of a prism of anhydrous ethylene diamine tartrate of thickness less than the major dimension of the face which is cut so that the angle between the normal to the face and the X axis lies within the range 5 degrees to, but not including, 14 degrees. As shown on the drawing, the rectangular axes XYZ are related to the crystallographic axes which are chosen so that the b axis is the diad axis of symmetry and the a axis lies in the direction of normal growth of the crystal, and the c axis is perpendicular to the b axis and forms an angle of 105¢ degrees with the a axis. The crystal vibrates in the longitudinal contour mode and has a square or circular face. Specifications 655,994 and 677,898 are referred to.
Patent GB-132962-A (GB)
IPC: B62J23/00
Abstract: 132,962. Parker, M. E. Jan. 2, 1919. Hand screens or shields. - A flanged ring A fitted with a pierced rubber disk b slips over the handle of a cycle, perambulator, &c. and is secured to the bar by a spring clip D pivoted on a bracket d riveted to the ring. The sides C of the shield may be of fur, leather, or cloth, or of metal covered with any of those materials. In the case of a cycle, the brake handle E is bent as shown. A lever may also be attached to the bell-pull so as to enable it to be operated from the inside of the shield.
Patent GB-133375-A (GB)
IPC: G01S1/72
Abstract: 133,375. Fessenden, R. A. Aug. 20, 1917, [Convention date]. Subaqueous audible signals; locating sounds.- Relates to means for eliminating disturbances in sound-receiving apparatus, particularly for subaqueous signalling or detecting submarines. In one form, the receiver 11, preferably an oscillator of the kind described in Specification 18765/13, is connected with the ear-piece 22 of a telephone receiver through commutators or rectifiers 14, 18, the frequency of which may be independently adjusted, and choke-coils 16 which may be shunted through condensers 17, 17<1>. In use, the commutator 18 is adjusted to a frequency to which the ear is most sensitive, and the commutator 14 is then adjusted till the received sound is a maximum. This frequency agrees approximately with that of the sound to be detected. An amplifier 19 may be used. In another form, microphones &c. 30, arranged in the same plane on a diaphragm, are connected in parallel with one another and in series with a telephone receiver 34. Out-of-phase disturbances neutralize one another, and the observed sound is a maximum when the plane of the diaphragm is normal to the direction of propagation. The apparatus can thus be used as a rotational direction-finder.
Patent GB-235174-A (GB)
Title: Improved method of regulating high pressure steam turbines
IPC: F01D1/02
Filed: 1925-05-21
Abstract: 235,174. Erste Br³nner Maschinen- Fabriks-Ges. June 5, 1924, [Convention date]. Regulating.-A high-pressure steam turbine is provided with inlets 9-11 for the first stage which, using full admission, supply half load, additional inlets 5-8 for live steam to a lower stage being requisitioned for three-quarter load, and further inlets 1-4 admitting live steam to a still lower stage being opened for full load. By subdividing the auxiliary inlet spaces into separated nozzle, groups 14-17, 18-21, regulation between the main partial loads may be effected by cutting-out nozzle groups. Similarly the first inlets 9-11 may lead to separated nozzle groups to permit further regulation.
Patent GB-514409-A (GB)
Title: Improvements in or relating to machine parts having a sliding motion, more particularly bearings
IPC: C22C21/10
Filed: 1938-05-04
Abstract: 514,409. Alloys. VEREINIGTE LEICHTMETALL-WERKE GES. May 4, 1938, No. 13368. Convention date, May 10, 1937. [Class 82 (i) ] Aluminium alloys, particularly for bearings contain 0.5-10 per cent. of magnesium and zinc in proportions between 0.16: 1 and 0.2: 1, and a total of 3.2-10 per cent. of one or more of the metals chromium, manganese, and cobalt, with or without nickel, or 6-10 per cent. of nickel, with or without up to 0.5 per cent. of titanium ; or up to 2 per cent. of copper may also be present, in which case the total of the metals chromium, manganese, and cobalt, with or without nickel may be 2-10 per cent. Up to 0.5 per cent. each of iron and silicon may be present as impurities.
Patent GB-133715-A (GB)
IPC: G11B17/00
Abstract: 133,715. Russ, J., and Russ, F. J. Sept. 1, 1917, [Convention date]. Rotary apparatus.-Rotary tables for displaying advertisements &c. are driven by means of an induction motor comprising a shaded-pole electromagnet and a conducting annular disk attached to the turntable or its spindle. A spring motor is preferably provided also, and a switch in the electric supply circuit is connected to the spring motor in such a way that the latter is disconnected and held stationary when the switch is closed. Fig. 1 is a section through the mechanism as applied to a gramophone, and Figs. 3 and 4 show the electro-magnet. An annular conducting disk 50 is secured to a spider frame 51 on the turntable spindle 3. or to the turntable rim, and a C-shaped magnet 60 is attached to a plate 21 with its poles above and below the disk 50. The magnet is built up of laminations and is in two intermeshing parts connected by a bolt 64, which may be removed when it is desired to detach the energizing windings 62. One half of each pole is surrounded by a conducting ring 61, causing a retardation of phase in the flux therethrough and in the resulting eddy currents in the disk 50, which is consequently set in rotation. The speed may be roughly adjusted by moving the electro-magnet to or from the spindle 3 and securing it by the nut 90. The motor is controlled by a push 41 carrying a conducting button 75 lying between shaped spring members 71. In its lower position, the button bridges the contact springs 71, and in its upper position it angages all insulating lining 72. The plunger 41 is connected by a lever 40 to a collar on the vertically-movable shaft 32 of the spring motor. When the shaft is raised, the spring motor is disconnected from the turntable spindle at the gears 31, 26, and is held stationary by the engagement of a cross pin on the shaft with a stationary abutment. The governor 80 controls the speed of both motors, and is driven by worm gear 82 from the turntable spindle 3, the speed being adjusted by a handle 87.
Patent GB-1336375-A (GB)
Title: Device for the thermal treatment of reactive gases in the presence of a catalyst
IPC: B01J8/02
Filed: 1971-05-06
Abstract: 1336375 Hydrogen VARTA AG. 6 May 1971 [8 May 1970] 13435/71 Heading C1A [Also in Division B1] Hydrogen is produced in a process for the catalytic decomposition of ammonia carried out in apparatus comprising a reaction chamber 5, nickel catalyst plates 8 with adherent layers on both sides of Raney nickel-iron embedded in carbonyl nickel, plates 8 being in contact with the heat conductive wall of combustion chamber 22a which provides heat for the catalyst. Insulation 13 is diatomaceous earth. In the embodiment of Fig. 2, the catalyst is carried by a spiral strip 33a, and heat is provided by electric coils 34. (For Figure 2 see next page.)
Patent GB-261805-A (GB)
Title: Improvements in or relating to electrically heated receptacles for heating liquids
IPC: H05B1/02
Filed: 1925-05-25
Abstract: 261,805. Credenda Conduits Co., Ltd., and Davis, P. W. May 25, 1925. Heating by electricity.-In a kettle &c. of the type provided with a switch having a fusible part which yields when the kettle is overheated the fusible part consists of a link made in two portions joined by fusible metal. In the arrangement shown a bar b carrying switch members a is urged by a spring f to withdraw the members a from contacts g, but is prevented by a link h formed in two parts united by a soldered joint i and attached by screws h<1> to the bar b and a post j. The bar carries a flat member k bearing such words as " boiled dry " which are normally hidden but when the switch is open appear through a window m in the false bottom of the kettle. The Provisional Specification describes a modification in which a fusible pin is substituted for the link h.
Patent GB-168121-A (GB)
Title: Article delivery mechanism
IPC: C03B35/10
Filed: 1920-05-17
Abstract: 168,121. Danberg, F. W. May 17, 1920. Toothed gearing. - An article - feeding apparatus more particularly intended for delivering glass bottles, jars, &c. to an annealing leer or oven comprises a rotary support for the article which is moved at different speeds at different portions of the cycle of movement. In the construction described two sector-shaped tables 16, 19, each including an angle of about 120‹, are mounted on a common axis. In operation a table is moved slowly past a delivery-shoot 71 and articles are fed one by one on to a projecting shelf 22. When the last article has been delivered the speed of rotation is doubled until the table is wholly within the mouth of the leer, when its movement is momentarily arrested, and the shelf is withdrawn to deposit the articles on the moving band 6. The motion is then continued at the higher speed back again to the feeding point. The apparatus is mounted on a carriage 1, on the platform of which is secured i stepped pedestal 11 carrying independently rotatable sleeves 12, 17 formed integrally with the tables 16, 19. The rim 20 of each table forms a guide for a segmental U-section slide 21 carrying the projecting shelf 22. and secured to the rim is a segmental L-section abutment plate 23. The slides are actuated by cams 30, levers 26 pivoted at their upper ends to brackets 27, links 25, and springs 33. A cam 30 is provided for each of the three levers 26 associated with a table, and a sharp step 34 on each is so positioned that the levers will be actuated simultaneously by the springs 33. The slide 21 and shaft 22 are divided at the middle, and the two parts are hinged together so that the movement at all points will be in a substantially radial direction, and to allow of this universal joints are incorporated in the links 25 of the two outer operating systems. The tables are driven by pinions 42, 43, 44, Fig. 7, spaced 120‹ apart and engaging gear segments 41, fixed to the sleeves 12, 17 by screws 62 passing through holes 63, which are slotted to allow a limited angular movement of the segment relatively to the sleeve under control of a spring 64. When the table reaches the feed position in the leer a stop 66 contacts with a spring-controlled trip arm on the bottom cam 30 and the table is momentarily stopped. The gear segment moves relatively to the sleeve, and when the screws 62 reach the ends of the slots the stop 66 is forced past the trip arm. The pinion 42 is driven at half the speed of the pinions 43, 44.
Patent GB-123278-A (GB)
Title: Improvements in Aeroplanes.
Inventor: SHAW WILLIAM ROBERT DOUGLAS
IPC: B64C39/00
Filed: 1918-08-22
Abstract: 123,278. Shaw, W. R. D. Aug. 22, 1918. Planes, arrangement of. - Aeroplanes are provided with a plurality of positively staggered main planes of which those below the centre of gravity are set at a smaller angle of incidence than the upper planes and have a lateral dihedral angle, the upper planes having no dihedral angle. The aeroplane shown comprises lower planes b arranged at the dihedral angle and at a smaller angle of incidence than the upper planes a. The stabilizing action of the lateral dihedral angle becomes more effective as the speed of the machine is reduced since the lower plane b takes a larger proportion of the lift when the incidence of the planes is increased by altering the altitude of the machine. Further, by reason of the staggered arrangement of the planes and their difference of incidence, a longitudinal stabilizing action is obtained. The maximum lift co-efficient is practically constant over a range of altitudes, thus producing an anti-stalling effect as well as an efficient landing air brake.
Patent GB-543591-A (GB)
Title: A new or improved distance measuring device
IPC: G03B42/02
Filed: 1940-08-31
Abstract: 543,591. Gauging apparatus. SIEMENSSCHUCKERT (GREAT BRITAIN), Ltd., and TUNNICLIFFE, E. A. J. Aug. 31, 1940, No. 13693. [Class 106 (ii)] [Also in Group XX ] A device for measuring distances comprises an optical system to project two beams of light from a predetermined base line and calibrated means to adjust the angle between the two beams so as to vary the distance 'from the base line to the point of intersection, or some other predetermined relationship, between the two beams. The particular application described is for measuring the distance between the target of an X-ray tube and the film. The device shown in Fig. 2 is secured to the bracket carrying the tube and comprises two spindles 2, 3 carrying reflectors 4, 5 in the path of a beam of light issuing from slits in discs 8, 9 at the ends of a housing 7 containing a lamp. Arms 10, 11 clamped to the spindles 2, 3 carry pins 10<SP>1</SP>, 11<SP>1</SP> engaging a groove 12 in an adjusting member screwed at 14 into a lug 15 on the frame 1. A handle may be secured to the spindle 16 to turn the screw and adjust the angle between the mirrors. A gear 17 meshes with a rack 18 on a slidable plate 19 carrying a scale co-operating with a pointer. The reflectors are adjusted so that the reflected beams intersect on the film holder and the scale is calibrated so that the required distance is read off. In a modification the reflectors are fixed at an angle at the ends of a flexible strip which may be deflected by moving a screw to adjust them.