baber/WOPTO huggingface dataset:
Patent GB-553302-A (GB)
Title: Improvements in television synchronising systems
IPC: H04N5/073
Filed: 1941-09-10
Abstract: 553,302. Television ; thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 10, 1941, No. 11605. Convention date, Sept. 10, 1940. [Classes 39 (i) and 40 (iii)] In a television synchronizing system the receiver is synchronized with a transmitter sending framing pulses which lack a fundamental frequency or fundamental frequencies present in the line pulses by means of a control circuit which responds to the disappearance of said frequency or frequencies: Transmitters for producing such synchronizing signals for non-interlaced and interlaced scanning are also described. These signals, shown respectively at 62, Fig. 3, and 91, 92, Fig. 5, comprise usual linefrequency pulses 53a or 75a, multiple line frequency pulses 73a for equalization in interlacing, and in addition during the field retrace period T or a part t thereof a train of pulses 51a or 71a at a frequency which is a multiple of the frequency of the pulses 53a or 73a respectively. These pulse trains are all derived by known apparatus from a fundamental series of pulses at the frequency of the pulses 51a or 71a. One form of circuit for use at the receiver for detecting, the disappearance of the fundamental frequencies of the pulses 75a and 73a of Fig. 5 is shown in Fig. 8. The pulse trains 91, 92 after separation from the video signal in known manner are supplied by the lines 112 to two diode rectifiers 136, 139 associated with the resistances and condensers shown and with two tuned circuits 130, 131 tuned respectively to the frequency of the line pulses 75a and the double frequency of the pulses 73a. The rectified voltages are applied to grids 141, 144 of a pentode 140 through condensers and resistances 142, 143, and 145, 146. When either pulses 75a or 73a occur, a steady negative bias is applied to the pentode 140 which remains inoperative. When these pulses disappear while the higher multiple frequency pulses 71a occur, the impedence of the tuned circuits 130, 131 being low for the multiple frequency, a pulsation goes through the valve circuits and is transmitted from anode of pentode 140 through a condenser resistance circuit 147, 148, 149 to a line 115 leading to a field synchronizing generator of known kind. The synchronizing train is also supplied direct by a line 114 to a known form of line synchronizing generator. The diodes 136, 139 and the pentode 140 may be combined in a single envelope. In a modification especially intended for the synchronizing train of Fig. 3, a single tuned circuit is used and is connected to the grid of a triode, the anode of which supplies the control pulsation to the field synchronizing generator.
Patent GB-325160-A (GB)
Title: Improvements relating to the manufacture of openwork metal flooring, stairway treads or the like
IPC: B21D47/00
Filed: 1929-04-15
Abstract: 325,160. Mudd, P. A. April 15, 1929. Gratings.-The bars of openwork metal flooring of the type having sinuous bars 2 and preferably also intermediate parallel straight bars 1, are joined together by welding metal plates 3, 4, preferably circular, to the ends of the joints. The plates, during welding, are pressed flush with the bars.
Patent GB-1160803-A (GB)
Title: Controlled Rectifier Inverter Circuits
IPC: H02M1/00
Filed: 1967-03-13
Abstract: 1,160,803. Cyclical chopping circuits; inverters. LANDIS & GYR A.G. 13 March, 1967 [23 March, 1966], No.11701/67. Headings H2F and H2H. Thyristors 5, 6 connected to an oscillatory load 1 are prevented from being conductive simultaneously by a pulse blocking circuit. The load is energized from a D.C. source through thyristor 5 and on the reverse current swing, current passes through a diode 8 hence extinguishing thyristor 5 and saturating a transductor through a winding 57 allowing pulses from a generator 7 to pass to the gate of thyristor 6 which fires and shunts the load. The second reverse swing of the current passes through a diode 9 thus extinguishing thyristor 6. More than one pulse may be applied to thyristor 6 which may be connected to a similar circuit (not shown) to prevent firing of the thyristor 5. Resistance 5 may be replaced by a current transformer and the transductor by an AND circuit (see Fig. 1, not shown). The pulse generator may comprise a sinusoidal A.F. generator switching on alternate half-cycles impulse switches (32), (33), Fig. 4 (not shown), through differentiating networks (37), (38). Each time the switch (32) is closed pulses are admitted from a generator (41) to thyristor 5 and when switch (33) and another switch (35) are closed pulses are admitted to thyristor 6. If the load is not sufficiently oscillatory, a coupling filter may be added.
Patent GB-552710-A (GB)
Title: Improvements in or relating to folding boxes
IPC: B65D5/26
Filed: 1941-09-15
Abstract: 552,710. Folding boxes of cardboard &c. FINLAY & SONS, Ltd., W., and FINLAY, A. Sept. 15, 1941, No. 11787. [Class 18] A folding box of paper, cardboard &c. has flaps 8, 20, 14 on the front 1, base 2 and back 3 of substantially the same length and width and each substantially co-extending with the end of the box and is erected by first engaging tongues 16 with slots 18 and then engaging lid flap 28 between flaps 22, 26 and inserting tongue 30 in slot 32. Cigarettes &c. are then filled into the box and panel 8 secured on the outside of panel 14 by engaging tongue 10 in slot 12.
Patent GB-559750-A (GB)
Title: Improved carriage or mounting for anti-tank guns
IPC: F41A23/28
Filed: 1942-08-24
Abstract: 559,750. Gun carriages. KING, G. A. A. Aug. 24, 1942, No. 11878. [Class 92 (i)] The wheels of the carriage of an anti-tank or-like gun are so mounted upon their common axle that they may be moved into a position above it, the axle being provided with means for engaging the ground for anchoring purposes during firing and carrying locking means for retaining the wheels in the travelling position. In the construction shown in plan, the wheels 6 can be swung into the horizontal plane above the axles 3 about pivoted joints, covered in normal use by sleeves 7 which serve to hold the ends of the axle, and thus the wheels, in the travelling position shown. Downwardly projecting studs on the axle press into the ground when the wheels are in the raised position, and a similar device is provided adjacent the towing end 8 of the steadying arm 5. The barrel 1 is secured by straps 11 to two yokes 13 which slide on guide rods 12 secured to a frame 10 which can be swung about horizontal and vertical axes on a support projecting upwards from the axle. The support may be adjustable in height. Two pairs of recoil springs 14 are mounted between the yokes and the frame, and a pair of springs 15 are disposed between the forward end of the frame and the rear yoke to act as buffers during the return stroke of the barrel.
Patent GB-732055-A (GB)
Title: Improvements in or relating to machines for treating textile fabrics
Inventor: BAILEY TOM
IPC: D06C7/02
Filed: 1952-05-10
Abstract: 732,055. Drying fabrics. BAILEY (ENGINEERS), Ltd., J. May 11, 1953 [May 10, 1952], No. 11880/52. Class 34 (1). [Also in Group VIII] In a fabric shrinkage machine (see Group VIII), moistened fabric AA passes over a heated drying cylinder 11, on to an inclined conveyer 13 comprising perforated aluminium or other transverse laths carried by endless chains, and over a further drying cylinder 19. Cylinders 11, 19 and conveyer 13 are located within the drying chamber which may be heated by steam pipes and circulating fans and baffles for directing hot air on to the fabric, To allow the fabric to shrink, no moving part has a higher surface speed than the preceding one, and conveyer 13 is driven at a slightly lower surface speed than cylinder 11 to allow the fabric to festoon without tension between the laths.
Patent GB-285000-A (GB)
Title: A process for working up low temperature tar
IPC: C07C37/72
Filed: 1927-05-04
Abstract: 285,000. Bunge, F. C., and Macura, H. Feb. 8, 1927, [Convention date]. Tar oils; lubricants for machinery.-Low temperature tar or fractions separated therefrom by distillation, freezing out, or other physical process, are treated with halogen compounds which split off constituents containing hydroxyl and hydrosulphide groups. Halogen compounds specified are phosgene, boron trichloride, phosphorus oxychloride, phosphorus sulphochloride, other chlorides of phosphorus, silicon tetrachloride, chromyl chloride, sulphuryl chloride, and chlorides of tin, antimony, arsenic, and bismuth. Preferably the tar &c. is neutralized by lyes and dehydrated before treatment at ordinary temperature and pressure. Raised or reduced pressure with cooling or heating and in presence of solvents for crude tar may be employed. The resulting mixtures are distilled to remove hydrogen halides and light hydrocarbons, the residues containing high boiling constituents of the tar and the aryl compounds formed being used for many purposes, e.g. as lubricants when arylated compounds, of tin, phosphorus, or silicon are present. The residues, with or without the hydrocarbons, may be nitrated to produce substances used in the explosives industry. Specification 181,835, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-714369-A (GB)
Title: Improvements in and relating to plate heat exchangers
IPC: F28F3/02
Filed: 1952-05-12
Abstract: 714,369. Plate heat-exchangers. AIR PREHEATER CORPORATION. May 12, 1952 [June 8, 1951], No. 11990/52. Class 64(3)  A heat-exchange component comprises U-shaped channel members 10 mounted in reversed parallel rows so that the channel bases constitute opposite walls of a fluid passage 14 (e.g. for a heating gas), plates 20 being interposed between and welded to the side legs 16 of contiguous channels and constituting with said legs, longitudinal fins in an adjacent air passage formed for example between a pair of adjacent components as show in Fig. 1, and the sides of the component being closed by other plates (e.g. plates 44). The portions of the plates 20 lying in the gas passage may have additional secondary heating surfaces constituted by tabs (e.g. tabs 32, Fig. 2) punched from the plate material.
Patent GB-778461-A (GB)
Title: Improvements in or relating to arrangements for induction motors or generators
IPC: G05B11/01
Filed: 1955-04-26
Abstract: 778,461. induction motors. KOLLSMAN INSTRUMENT CORPORATION. April 26, 1955 [Sept. 1, 1954], No. 12007/55. Class 35. A two-phase induction motor or generator, for use as a servomotor &c., has continuously energized main windings 11, control quadrature windings 14 supplied with or generating signal current of variable magnitude and phase sense connected to a source or receiver 15, and an additional, quadrature winding 17 fed through a high resistance 18 from the main source and serving to balance any parasitic quadrature flux. The energization of the auxiliary winding may be such as to prevent creeping of the rotor 10 or signal in the control winding at zero control signal or zero speed, to give equal response in either direction, or to produce a more sensitive response in either direction.
Patent GB-1492634-A (GB)
Title: Process for producing titanium tetrachloride
IPC: B01J8/24
Filed: 1975-03-21
Abstract: 1492634 Titanium tetrachloride ISHIHARA SANGYO KAISHA Ltd 21 March 1975 [23 March 1974] 12025/75 Heading ClA TiCl 4  is made by chlorinating a titaniferous material in the form of fine particles at least 20% by weight of which pass through 200 mesh Tyler standard sieve with a Cl 2 -containing gas in the presence of a solid carbonaceous reducing agent in a reaction zone of which the cross-sectional area of an upper part is 1À2-10 times as large as that of a lower part, the solid raw materials being introduced into the reaction zone at at least two locations, at least one of the locations being in the upper part and another being in the lower part of the reactor and the Cl 2 -containing gas being introduced below or at the lowest of the locations at which solids are introduced as an upward flow into the reaction zone to maintain a dilute phase fluidization system therein accompanied by reflux of part of the solid raw material particles. Suitable titaniferous materials includes ores such as rutile and ilmenite and concentrates such as slag. The TiO 2  content is preferably at least 50% by weight. The reducing agent may be charcoal or coke and usually makes up 10-40% by weight of the solids. The chlorination is suitably carried out at 900-1400 C. and the maximum linear velocity of the gas in the reactor is 1-10 m./sec. The reactor preferably has a circular or polygonal section and may be of conical or upwardly stepwise widening form. The solid raw material fed into the lower part of the reactor preferably consists of comparatively fine solid raw materials, e.g. that carried over from the reaction and recycled. The gas may be fed in with the lower solids feed or separately.
Patent GB-628389-A (GB)
Title: Auxiliary service equipment for telegraph receivers
IPC: H04L13/06
Filed: 1946-04-18
Abstract: 628,389. Boxes. CREED & CO., Ltd. April 18, 1946, No. 12054. Convention date, April 21, 1945. [Class 18] [Also in Group XL(b)] In telegraph receiving apparatus in which the record of a received message is automatically fed into a container and is severed at the end of a message to allow the container to close (see Group XL (b)), the container B comprises substantially plane side walls 35 of an opaque material and a circular portion 36 which is transparent over at least a part of its circumferential portion so that the name of the addressee of the message is visible. The side walls 35 have circular grooves 37 into which the edges of the curved portion 36 are cemented, the latter being provided with an unsupported end portion 36a which closes the container when the message-feeding chute 20 is withdrawn. One of the side walls 35 has a perforated circular line 35<SP>1</SP> to allow opening of the container by pressing in the perforated wall.
Patent GB-824502-A (GB)
Title: Means for braking or controlling rotary arm liquid sewage distributors
IPC: C02F3/04
Filed: 1957-04-13
Abstract: 824,502. Fluid friction brakes. ROOKE, G. M. March 18, 1958 [April 13, 1957], No. 12148/57. Class 103 (1). [Also in Group XXIX] .In order to retard the rotation of a rotary sewage distributer a wheel or roller 2 with peripheral bars 4 or studs is attached by a frame 5 to an arm 1 of the distributer, and the wheel is pulled over the ground 3. A pin 8 of the frame engages a sleeve 9 on a clamp 10, 12 and allows the wheel to adapt itself to unevenness of the ground. In Fig. 3 the wheel is hollow with a partition 15 and is partly filled with oil, granular material &c., which passes from one compartment 17 or 18 to the other as the wheel rotates. It may be divided into a larger number of compartments by radial divisions extending from its wall and partly filled with liquid &c. In a further embodiment the wheel is acted upon on each side by a friction pad carried on the frame.
Patent GB-216667-A (GB)
Title: Improvements relating to vacuum brake cylinders
IPC: F16D65/28
Filed: 1923-05-05
Abstract: 216,667. Gresham, H. E., and Kiernan, G. May 5, 1923. Grit, excluding; stuffing-boxes, substitutes for. -In a vacuum brake in which the piston-rod is protected from grit by a canvas &c. sleeve, the sleeve is secured to a, metal ring e, Fig. 2. having an integral lug f and a removable lug g, engaging the stuffing-box gland or a plate a secured to the gland. The lug g is secured to a spring strip h, riveted to the ring e at one end i, and slotted at the other end j to engage a stud k. The lug g can thus be withdrawn by means of a handle m. In a modification the lug g is replaced by a pin n, Fig. 8, carried by a spring strip h, secured to the ring e, and formed with a finger piece o.
Patent GB-720567-A (GB)
Title: Improvements in the cooling of rotating bodies
IPC: F16H41/30
Filed: 1952-05-14
Abstract: 720,567. Hydraulic couplings. SVENSKA ROTOR MASKINER AKTIEBOLAG. May 14, 1952 [May 16, 1951], No. 12210/52. Addition to 667,565. Class 69 (2). A rotating body requiring to be cooled, according to the parent Specification, includes guide baffles extending into the grooves from the interruptions or certain of the parts and terminating short of the bottom of the grooves for guiding flow of a gaseous medium passing through the ports or interruptions. A hydraulic coupling comprises a rotating housing 44, Fig. 5, provided with cooling ribs 46 surrounded by a cover portion 66 having circumferentially spaced interruptions which together with vane elements 72 form inlet and outlet ports 74, 76, the inlet ports having a greater area than the outlet ports. Guide baffles 86 are positioned in the inlet port 74 to guide the incoming air into the grooves between the ribs 46. The baffles 86 terminate short of the bottom of the groove and each port may be provided with a plurality of guide baffles decreasing in depth from the elements 72. The outlet ports may also be provided with similar guide baffles. In a modification the interruptions are covered with filter material. In a further modification, Fig. 10, the inlet ports 74 are covered by a plate 90a and air is forced into the grooves in a direction counter to the direction of rotation by means of a centrifugal fan comprising blades 98 secured to the rotating housing and diffuser guide vanes 102.
Patent GB-776746-A (GB)
Title: Improvements in or relating to inductance coils
IPC: H01F27/02
Filed: 1954-04-27
Abstract: 776,746. Spring catch fastenings. GENERAL ELECTRIC CO., Ltd., and BRANDRETH, R. D. April 26, 1955 [April 27, 1954], No. 12228/54. Class 44. [Also in Group XXXV] An inductance coil 1 is wound on an insulating former of nylon, the former comprising a first portion 2 on which the coil 1 is wound, a second compressible portion 3 and a third constricted portion 4, such that the second portion 3 may be compressed and passed through a hole in a panel 6, the second portion 3 then resuming its normal shape with the edge of the hole trapped between the first and second portions 2, 3 with the constricted third portion 4 within the hole. The second and third portions 3, 4 are slotted-as at 8-to allow lateral compression thereof and their cross-section may be other than circular. The end of the second section 3 can be chamferedas at 9-to allow the former to be pushed into the hole in the panel 6. The former may be provided with internal ribs to accommodate a magnetic core, as described in Specification 776,745, [Group XXXV].
Patent GB-863130-A (GB)
Title: Self-gripping fixing device embodying a wall-plug
Inventor: MONTRASI VIRGINIA
IPC: F16B13/06
Filed: 1958-04-17
Abstract: 863,130. Wall-plugs. RAMSET ITALIANA S.p.A. April 17, 1958, No. 12276/58. Class 89(1). A wall-plug comprises a resiliently-deformable hollow-body 1, of synthetic-plastic-material such as nylon, with a flange 4 at one end and a screw-thread 1<SP>1</SP> at the other end to engage, a rigid stem 6. The threads 11 may be in a nut 3 secured in a recess 2, or in the body 1. The body may have slots 5 to increase its deformability and is expanded when the stem 6 is screwed up, and the stem has an abutment or head 7. The stem may carry a hook 8 or a loop, screw-head, bracket &c. (Figs. 8-11), not shown.
Patent GB-1214679-A (GB)
Title: Furnace for obtaining crystals by pulling from a melt
IPC: C30B15/14
Filed: 1968-03-13
Abstract: 1,214,679. Crystal-pulling. COMPAGNIE GENERAL D'ELECTRICITE. 13 March, 1968 [14 March, 1967], No. 12295/68. Heading B1S. A garnet or ruby crystal is pulled with rotation from a rotary iridium crucible 4 in an oxygen-free atmosphere, employing a thermal gradient not exceeding 200‹C for a distance of 100 mm above the melt. The crucible is heated from below and at the sides by fixed resistance heaters 8 and the pulled rod is similarly heated by movable resistance heaters 13 and 14. Fixed screen 10 and movable screen 15 surround the crucible and rod resp. and a thermcouple is situated between each screen and annular heater. The crucible, movable heaters and movscreen are raised as pulling proceeds. Auxiliary heating of the surface of the melt is effected by passage of an electron beam from a generator 18 through a suitable opening. The temperature of the melt is measured by a device 19 through which the surface of the melt may be observed. The equipment within the furnace (except the crucible and generator) is of tungsten.
Patent GB-860115-A (GB)
Title: Free flowing ammonium nitrate
Inventor: JR PAUL O MARTI
IPC: C01C1/18
Filed: 1954-04-28
Abstract: Ammonium nitrate particles are coated with a comminuted agent of iron-iron cyanide, cobalt-iron cyanide, copper-iron cyanide or manganese-iron cyanide, to inhibit caking at atmospheric humidity so that the particles are free flowing after months of storage. The comminuted agent may be mixed with the nitrate before grinding, which it facilitates, or after grinding.  Particles of between 0.01 and 10 microns of insoluble Prussian blue in an amount between 0.1 and 5 weight per cent of the nitrate forms a suitable agent.  The ammonium nitrate may comprise large particles for use as a fertilizer or small particles for explosive use; less comminuted agent being required to coat a given weight of the larger particles.  A Mikro pulverizer may be used for grinding and a reduction from over an hour to three minutes is claimed.
Patent GB-451131-A (GB)
Title: Improvements in or relating to reflectors for attachment to the rear of cycles
IPC: B62J6/20
Filed: 1935-04-25
Abstract: 451,131. Reflectors. BLUEMELBROS., Ltd., and BLUEMEL, F. W., Wolston, near Coventry. April 25, 1935, No. 12455. [Class 97 (i)] A cycle reflector is adapted to be fastened to any one of a plurality of different attachment members each mountable in a different position on the rear of the cycle, the reflector also being prevented from rotating relative to the attachment member. As shown, the renector 11 is carried in a casing 12 fitted with an arm 13 with flanges 15 for attachment to the cycle. Fig. 1 shows the reflector attached to a mudguard by means of a seating-piece 16 and a screw 17, the flanges 15 preventing relative rotation of the parts. Fig. 5 shows an alternative mounting for a mudguard. As shown in Fig. 3, the back-stay of the cycle carries a lug 21 supporting the screwed shank 20 of a nut 19 held in position between the flanges 15 by a screw 23. Fig. 7 shows an alternative attachment for the back-stay comprising a clip 29 to which the reflector is attached by a screw 32.
Patent GB-1447166-A (GB)
Title: Illuminator for illuminating a fluorescent object
IPC: G02B21/16
Filed: 1974-03-21
Abstract: 1447166 Fluorescence microscopy ERNST LEITZ GmbH 21 March 1974 [2 April 1973 (2)] 12520/74 Heading G2J An illuminator for fluorescence microscopy has a number of syrarate units 11-14 each being detachable for easy replacement and each including an incident light filter filtering the source, a dichroic mirror transmitting fluorescent light to the observer but reflecting incident light and a barrier filter in the observers path to selectively pass inserted light. As shown carrier 18 is rotatable and is arranged between the objective and eyepiece of the microscope.