baber/WOPTO huggingface dataset:
Patent GB-781837-A (GB)
Title: Improvements in the polymerization of ethylene
IPC: C08F4/16
Filed: 1956-01-04
Abstract: Catalysts for the polymerization of ethylene comprise a mixture of a titanium tetrahalide, a metal capable of reducing tetravalent titanium to trivalent titanium and an alkyl halide.  The tetrachloride may be the chloride, bromide, iodide or fluoride and the metal, which is preferably finely divided, may be aluminium or zinc.  Alkyl halides specified are methyl, ethyl, propyl, butyl, methylene and ethylene chlorides and bromides.  The catalyst components are said to form a complex and the preferred mol. ratios used are given.  Other metal halides, e.g. aluminium, mercuric and zinc chlorides, bromides and iodides, may also be included as catalyst activators.  Catalyst may be removed from the products by washing with water, dilute hydrochloric acid or methanol.ALSO:Ethylene is polymerized by a catalyst mixture of a titanium tetrahalide and a metal capable of reducing tetravalent titanium to trivalent titanium, in the presence of an alkyl halide. The tetrahalide may be the chloride, bromide, iodide or fluoride and the metal, which is preferably finely-divided, may be aluminium or zinc.  Alkyl halides specified are methyl, ethyl, propyl, butyl, methylene and ethylene chlorides and bromides.  The catalyst components are said to form a complex and preferred mol. ratios are given.  Excess alkyl halide acts as solvent in conjunction with optional materials such as aliphatic, cycloaliphatic, aromatic and alkylaromatic compounds, e.g. heptane and iso-octane.  Other metal halides, e.g. aluminium, mercuric and zinc chlorides, bromides and iodides, may also be included as catalyst activators.  The ethylene used preferably contains not more than 0.01 per cent of oxygen and less than 0.5 grams of water per cubic metre, and may be purified over potassium vapour.  The products may be purified and the catalyst removed with water, dilute hydrochloric acid or methanol, and any waxy polyethylene may be separated with boiling hydrocarbons such as heptane, benzene and toluene.  The examples illustrate the continuous addition of ethylene and catalyst/solvent mixtures.  The polyethylenes obtained are of high molecular weight (20,000 and above) and high melting-point and may be pressed into thin, strong films or foils.
Patent GB-893131-A (GB)
Title: Lighting switch for vehicles
IPC: H01H23/02
Filed: 1959-01-06
Abstract: 893,131. Snap-action switches. SOC. DES ETABLISSEMENTS TORRIX. Jan. 6, 1959 [Jan. 28, 1958], No. 491/59. Class 38 (5). A switch, especially for vehicle lights, comprises a rod 3 pivoted in an opening 8 in a cover 2 and having a square section 9 having one face of insulation and carrying a conducting element 12 which covers the other three faces and the rounded end 9<SP>1</SP>. The latter co-operates with terminals 4, 6 and a circular section 9<SP>2</SP> of the rod cooperates with spring blades 41, 6 connected respectively to terminals 4, 6<SP>1</SP>. The section 9 is movable between two blades 10, one of which is connected to a supply terminal 7. The rod may be rocked up and down between the positions shown and may be rotated through one or two 90-degree steps, the first step connecting the element 12 to terminal 7 and the further step bringing the element 12 into a position where it can engage blade 6<SP>1</SP> when in the dotted position. As described, terminal 5 controls side and tail lights and is always engaged by element 12, terminal 4 controls dipped headlights and terminal 6 full headlights.
Patent GB-1448979-A (GB)
Title: Circuit arrangements for colour television receivers
IPC: H04N9/465
Filed: 1973-01-04
Abstract: 1448979 Colour television EMI Ltd 14 Dec 1973 [4 Jan 1973] 547/73 Heading H4F A received PAL colour television signal is split into its U and V components by a one-line delay line (not shown) an adder (not shown) to derive the U component, a 180 degree phaseshifter 1 and an adder 2 to derive the V component, the V component being passed to a demodulator 9 via a switch 3 operated at the end of each line period, a direct path 6 and a 180 degree phase shifter 5 to derive a constantphase V<SP>1</SP> component; a reference oscillator 11 connected to demodulator 9 is synchronized by bursts derived either from a burst gate (12<SP>1</SP>, Fig. 2, not shown) connected to receive the V<SP>1</SP> component fed to demodulator 9, or from a burst gate 12, the bursts being passed via a switch 13 ganged with switch 3, direct path 15 and 180 degrees phase shifter 16, oscillator 11 operating at the mean phase of the received bursts, which is the phase of the V<SP>1</SP> component fed to demodulator 9. The U component is demodulated by a second demodulator (18, Fig. 2, not shown), the reference signal for which is derived either from a second oscillator (21) synchronized by the U components of the bursts, or from oscillator 11 if the phase of switch 3 relative to the received signal is monitored to generate a control signal which operates a phase shifting device inserted between the oscillator 11 and the U-demodulator.
Patent GB-304900-A (GB)
Title: An improved cellulosic fabric and the production thereof
IPC: D06M15/39
Filed: 1928-01-09
Abstract: 304,900. Tootal Broadhurst Lee Co., Ltd., Foulds, R. P., and Marsh, J. T. Jan. 9, 1928. Phenol-aldehyde condensation product for treating cellulosic fabrics is made by boiling together 100 parts of phenol, 100 parts 40 per cent formaldehyde, and 4 parts of potassium carbonate for five minutes and cooling rapidly. According to the Provisional Specification, the resin may consist of 100 parts phenol, 200 parts formaldehyde, and 6 parts potassium carbonate. Specifications 291,473 and 291,474 are referred to.
Patent GB-818239-A (GB)
Title: Pendulous rotatable bobbin support for spinning frames and the like
IPC: D01H1/18
Filed: 1958-01-07
Abstract: 818,239. Supporting creel bobbins for spinning &c. machines. BENDIX AVIATION CORPORATION. Jan. 7, 1958 [Feb. 8, 1957; April 22, 1957], No. 649/58. Class 120(2) A bobbin holder comprises a hollow rotatably-suspended cylinder 1 with a pair of diametrically arranged slots 4, 5, a latch 6 pivoted in the cylinder 1 so as to project through the slots when its major dimension is horizontal and to be moved into and out of its projecting position by a vertical pawl 15 mounted to move axially in the cylinder 1, the pawl having a shoulder 22 positioned to engage a ratchet 12 of the latch and rotate it on downward movement by a spring 26 within the cylinder. The latch consists of two plates 10, 11 with a square plate 12 between them acting as the ratchet. The pawl is resilient and has its upper end wound about a pin 16 attached to a collar 19 on the exterior of the cylinder 1, the pin 16 moving vertically in slots 17, 18 upon the application of the bobbin 9. An alternative pawl is shown in Fig. 5, wherein the pin 16 engages in holes 34, 35 and the shoulder 32 is formed by stamping.
Patent GB-546670-A (GB)
Title: Acid recovery process
IPC: C01B17/45
Filed: 1941-01-21
Abstract: 546,670. Purifying acids. SHELL DEVELOPMENT CO. Jan. 21, 1941, No. 821. Convention date, Jan. 27, 1940. [Class 1 (ii)] Sulphuric and chlorsulphonic acids are purified from organic impurities and obtained in concentrated form by promptly diluting the acid to form 35 per cent. to 60 per cent. after contamination and cooling it during dilution, removing the tarry and like impurities thereby separated, converting the remaining impurities into a readily filterable form and concentrating the acid by feeding it into a quantity of sulphuric or chlorsulphonic acid at a high temperature, removing the separated organic impurities and further concentrating the acid. Specification 460,973, is referred to.
Patent GB-620230-A (GB)
Title: Improvements in electric conductors and methods of manufacture thereof
IPC: H01B7/16
Filed: 1947-01-10
Abstract: 620,230. Cables. BOLTON & SONS, Ltd., T., SLATER, W. F., COLLIER, T. W., and BERRISFORD, S. Jan. 10, 1947, No. 860. [Class 36] Electric cables are made by drawing a ductile metal sheathing 1 enclosing an insulating powder 3 and one or more cores 2 through a die 4 to effect compression of the powder without reducing the cross-section of the cores. The cores may be removed during or after the operation and a conductor threaded into the holes thus formed, or the cores may be hollow and have the conductors threaded through them. Alternatively, the cores may be left in position, Fig. 3, and reduced during the passage of the work-piece through a subsequent die 9. The powdered insulating material may be' magnesium oxide, steatite, polytetrafluoroethylene, silicone resins or silane resins, or a mixture of two or more of such substances.
Patent GB-710975-A (GB)
Title: Improvements in or relating to spray drying
IPC: B01D1/18
Filed: 1952-01-11
Abstract: <PICT:0710975/III/1> In spray-drying apparatus in which material to be dried is sprayed into a drying chamber through which a hot drying gas flows which carries the dried particles out of the drying chamber into a separating device (e.g. a separating chamber, filter or cyclone separator), the drying chamber has a peripheral wall consisting wholly or in part of gas-permeable material through which part of the drying gas is introduced.  Liquid is sprayed through a nozzle j into a drying chamber e having a wall c of porous material (e.g. ceramic material or material produced by powder metallurgy) which is surrounded by an impermeable tube a.  Most of the drying gas enters the chamber e through openings h in a lid f whilst some enters via one or more pipes b and the porous wall c; some may also be introduced via a pipe l and nozzle j.  Dried material passes into a separating device (not shown) either directly or via a cooling chamber m fed with cool gas from pipes n.  In modifications (1) the main part of the drying gas enters through the lid f which is also of porous material, (2) one or more intermediate chambers are interposed between the drying chamber e and the cooling chamber m.
Patent GB-589696-A (GB)
Title: Improvements in or relating to a velocity modulation electron discharge device
IPC: H01J25/12
Filed: 1944-01-18
Abstract: 589,696. Velocity - modulated tubes. SPERRY GYROSCOPE CO., Inc. Jan. 18, 1944, No. 988. Convention date, Jan. 22, 1943. [Class 39 (i)] The exit. vetocity of electrons from the buncher resonator 16 is reduced relative to the entrance velocity by splitting the resonator into two parts 16<1>, 16<11> and, applying a retarding D.C. potential between them, as by battery 29. As the velocity of the bunching beam in the drift space 21 is thereby reduced, the drift length may be reduced without any corresponding reduction in the average velocity of the beam within the buncher, which might lead to increased power losses therein. The two parts are closely coupled capacitatively by an overlap, with insulation between. The output resonator 22 may operate at a harmonic. Specification 523,712 is referred to.
Patent HK-13694-A (HK)
Title: Electro-optical display element
Inventor: BAUR GUENTHER
IPC: C09K19/46
Filed: 1994-02-24
Abstract: PCT No. PCT/EP87/00135 Sec. 371 Date Nov. 17, 1987 Sec. 102(e) Date Nov. 17, 1987 PCT Filed Mar. 9, 1987 PCT Pub. No. WO87/05714 PCT Pub. Date Sep. 24, 1987.By suitable choice of the liquid crystal parameters K3/K1 and K3/K2, it becomes possible to achieve a steep electrooptical characteristic line and a maximum contrast with minimum dependence on the viewing angle in electrooptical display elements with a twist angle with a value between 150 DEG  and 250 DEG .
Patent HK-52984-A (HK)
Title: Electronic tone generator
Inventor: GOTO MITSUHIRO
IPC: G10H1/26
Filed: 1984-07-05
Abstract: An electronic tone or note generator capable of providing improved musical and tone quality and special sound effects by mixing the outputs of a plurality of note-signal-producing circuits is provided. The electronic tone or note generator of the invention is characterized by the use of a primary electronic note circuit for producing a primary note signal which is a portion of a primary melody, and a secondary electronic note circuit for producing a secondary note signal that is musically related to the primary melody. The relationship between signals can be a time lag between the outputs of the two note signal circuits or a small difference in frequency between the signal outputs of the two note circuits. Additionally, each note signal circuit can output alternate notes of a continuing melody such that a note from one circuit may persist while the next note from the second circuit is played. The note signals from the note-producing circuits are shaped and mixed or summed and then applied to an electroacoustic transducer in order to produce audible music of high sound quality. The acoustical frequency of each note and the time between initiation of successive notes are stored in memory units associated with each note-signal-producing circuit. The outputs of high-frequency signal sources are variably divided down to provide the individual note signals and control note timing.
Patent HK-92295-A (HK)
Title: Electronic microcircuit card and its method of fabrication
Inventor: DANIEL CHAMPAGNE
IPC: B42D15/10
Filed: 1995-06-08
Abstract: PCT No. PCT/FR88/00350 Sec. 371 Date Feb. 27, 1989 Sec. 102(e) Date Feb. 27, 1989 PCT Filed Jul. 1, 1988 PCT Pub. No. WO89/00340 PCT Pub. Date Jan. 12, 1989.An electronic microcircuit card and method for its manufacture are disclosed. Contacts 12 that are accessible through an opening 26 of the card 10 are raised by a boss 27 formed under the contacts in such a manner that they come approximately to the level of the outer face 22a of the card. The invention applies particularly to credit cards, the thickness of which meets the standard for credit cards as established by the International Standards Organization (ISO).
Patent HK-93292-A (HK)
Title: Cardboard safety cutter
Inventor: BEERMANN EWALD HELMUT
IPC: B26B1/08
Filed: 1992-11-26
Abstract: A cutter with a cutter-blade mounting which is guided longitudinally displaceably and is tension spring-loaded in the direction of the hollow cutter handle comprises a stationary holding and guiding element (18) which is displaceably received by the handle sleeve of substantially rectangular shape in cross-section. Side elements (16), which enclose the blade (12) between them, are held against the holding and guiding element (18) under tensile load via a tension spring (31). They are guided longitudinally displaceably via guiding ribs which engage in slots (22, 23) formed on the holding and guiding element (18). One side element (16) is provided with fitting pins (38, 39) which engage in bores (40, 41) of the holding and guiding element (18) in order to fix said side element. 
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Patent HU-T59774-A (HU)
Title: Method for generating parity symbols and a circuit arrangement for realizing siad method
Inventor: SCHEMMANN HEINRICH
IPC: G11B20/18
Filed: 1990-07-16
Abstract: Coding process. Reed Solomon coders are used to code audio signals which are recorded on a CD in accordance with the CD standard. First parity symbols are produced in a retroactive shift register. To obtain a simple circuit, the first parity symbols are shifted from the retroactive shift register into a storage shift register. After a given number of cycles, the direction of data flow in the storage shift register is reversed. During read-out of the parity symbols, the parity symbols calculated in the retroactive shift register (S1,..., Sn) are combined with those of the storage shift register (R1,..., Rn) in an adding device (A2). Process for coding audio signals which are recorded on a CD or on a magneto-optical disk in accordance with the CD standard.
Patent HU-T39784-A (HU)
Title: Process for production of alloy containing nickel from waste
Inventor: HORVATH JANOS
IPC: C22B7/00
Filed: 1985-02-28
Abstract: Waste material is fed continuously into an induction furnace contg. other alloys. The melt is reduced with carbon and mixed thoroughly. By burning off the formed CO enough heat is generated to melt the nickel alloy ready for casting.
Patent JP-S57113336-A (JP)
Title: Detector for maximum pressure
Inventor: YAMAMOTO MASAAKI
IPC: G01L7/00
Filed: 1981-01-06
Abstract: PURPOSE:To obtain a smaller size and a lower cost by indicating the movement of a liquid column which is so arranged that a gas column is sealed into a spiral hollow tube having a sealed end and an open end. CONSTITUTION:A hollow tube 1 having a sealed end 3 and an open end 2 is made spiral and a liquid column 5 is placed on the side of the sealed end 3 to seal a gas column 4. When a pressure rises in a container due to a gas generating reaction or the like, the pressure in the gas column is reduced until it balances the pressure applied from the open end 2 and accordingly, the liquid column 5 moves to the sealed end 3. An indication piece 6 is shifted thereby to  indicate the maximum pressure.
Patent JP-2000199096-A (JP)
Title: Power supply device
Inventor: WADA KEISUKE
IPC: C25D17/10
Filed: 1999-01-04
Abstract: PROBLEM TO BE SOLVED: To provide an electrode structure which is free from heating, or oxidation of the surface thereby even when a large current flows, and free from any generation of sparks between a bar and a roller electrode caused by the deformation of the bar or the idling of the roller electrode. SOLUTION: A power supply device comprises a plurality of sets of carrying rollers 1 each comprising a press roller 6 and a feed roller 3 opposite to each other to hold a bar 5, at least one roller is formed of a metal, a carrying surface 2 of at least one set of carrying rollers is arranged so as not to form a flush surface with the carrying surface of other sets of carrying rollers so that the contact area of the metal roller with the bar is increased, and when a plurality of metal rollers are used, the current of the same quantity is allowed to flow in each metal roller.
Patent JP-H11194054-A (JP)
Title: Acoustic temperature measuring instrument
Inventor: IMADA NORIYUKI
IPC: G01K11/24
Filed: 1998-01-05
Abstract: PROBLEM TO BE SOLVED: To provide an acoustic thermometer for gas which can measure the temperature of a gas without making such a large-scale remodeling that a siphon is bent even when the propagate distance is long or the noise in a furnace is loud. SOLUTION: In an acoustic thermometer which utilizes the fact that the velocity of sounds propagated through a gas varies with the temperature of the gas, a sound source 103 which continuously produces sounds, two or more acoustic receivers 4-l and 4-2 which are set up at different distances from the sound source 103, storage devices which respectively store the signals received by means of the receivers 40-l and 4-2, a time difference computing element 15 which calculates the time difference between the sounds arriving at the receivers 4-l and 4-2 from the sound source 103, and a temperature computing element 16 which calculates the temperature of the gas between the receivers 41 and 4-2 from the time difference are provided. The sound source 103 produces the sounds by emitting a compressed gas from the opened holes of a pressurized vapor pipeline 103.
Patent JP-H06204105-A (JP)
Title: Exposure
Inventor: NISHI TAKECHIKA
IPC: G03F7/20
Filed: 1993-01-06
Abstract: PURPOSE:To improve a superposition accuracy in a coupling part between adjacent shot regions when pattern images respectively formed in one or plurality of reticules are successively connected and exposed on a photosensitive substrate. CONSTITUTION:Alignment mark images 21PA and 22PA are exposed when a circuit pattern image 16PA is exposed onto a first shot region S1. Then, a second shot region S2 is moved into the exposing field of a projection optical system, the positions of the alignment mark images 21PA and 22PA as latent image patterns are detected, and the alignment of a reticule to be exposed hereafter and a photosensitive substrate is performed on the basis of the result of detection. After that, the alignment mark images 21PA and 22PA are erased by double exposure when the circuit pattern image 16PB is exposed to the second shot region S2.
Patent JP-H10197511-A (JP)
Title: Analyzing method for formaldehyde in air
Inventor: KAWACHI TAKESHI
IPC: G01N1/22
Filed: 1997-01-07
Abstract: PROBLEM TO BE SOLVED: To measure accurately the concentration of formaldehyde in the air in a short time at the site, at a low cost, with simple operation, and requiring no skillfulness. SOLUTION: As a capturing liquid, 2.0ml 2N-KOH solution is injected in a capturing tube 20, which is attached to a gas capturing device 1, and the air is sucked. 0.5ml AHMT reagent is taken out of a vial A using a pipette and added to the content of the tube 20, and this condition is kept for 15-20min. Meantime a standard color solution is set in a photo-absorptiometer, and adjustment is made with a dial so that the indication gives the specified value. 0.5ml KIO4 reagent is taken out from a vial B using a pipette and added to the tube 20. The tube 20 is set in the photo-absorptiometer, and the indication is read, which gives the concentration of formaldehyde in the air.
Patent JP-2000198261-A (JP)
Title: Plate cylinder-type printing device with mechanism for adjusting right/left position of print image
Inventor: MOTOE KATSURO
IPC: B41F13/14
Filed: 1999-01-05
Abstract: PROBLEM TO BE SOLVED: To provide an improved device for adjusting the right/left positions of a print image for a plate cylinder-type printing device which is based on a drawer-type plate cylinder device. SOLUTION: A plate cylinder 12 is borne by a first frame 36 in a rotatable manner around the center axis 38 of the plate cylinder 12 and the first frame 36 is borne by a second frame 52 in such a manner that the former is movable by at least a corresponding distance to the maximum value of a margin for adjusting the right/left positions of a print image in the direction along the center axis 38 of the plate cylinder 12. Further, the second frame 52 is installed, in a freely attachable/detachable manner, on the device frame 10 and the first frame 36 is moved toward the second frame 52 by a moving distance required for the right/left positions of the print image.
Patent JP-S61162626-A (JP)
Title: Underground excavating device
Inventor: INOUE KAZUTOSHI
IPC: E02D5/44
Filed: 1985-01-07
Abstract: PURPOSE:To efficiently increase a size by means of excavating water, by a method wherein a slewing rod 7c, provided at its forward end with an excavating bit and a soil discharge port, is supported to the lower end of the stationary rod of an excavating device in a manner that it can be freely slewed, and an excavating nozzle is attached to the slewing rod so that it is movable in parallel. CONSTITUTION:A stationary rod 7b of an excavating device and slewing rod 7a, supported to the lower end of the stationary rod so that it can be freely slewed,are held on a straight line for rotation, and excavation is effected down to a given depth by means of an excavating bit 17. An excavated surface 31a is excavated through injection of excavating water 29 through a nozzle 16 attached to the slewing rod 7c, and the slewing rod 7c is slewed through a driving cylinder 9 in response to an increase in size to approach the nozzle 16 to the excavated surface 31a. In which case, the nozzle 16 is always horizontally held by means of a parallel moving mechanism 15. This causes a distance between the nozzle 16 and the excavated surface 31a to be held at an optimum value, and enables efficient increase of the size of an excavated hole.