baber/WOPTO huggingface dataset:
Patent GB-971833-A (GB)
Title: Crosscorrelator for electric control systems
Inventor: SHIRAI TADAO
IPC: G05B23/02
Filed: 1961-05-12
Abstract: 971, 833. Measuring impulse response; cross correlation techniques. FORD MOTOR CO. Ltd. (Ford Motor Co.). May 12, 1961. No. 17375/61. Heading G1U. A cross correlator for measuring the impulse response of an electric control system 10 comprises a test signal source 30 which produces a test signal in the form of periodically repeating binary digits, the transition times of binary changes within the periods being explicitly specified, and which is coupled to the input of the control system, a generating arrangement 32 for generating a plurality of delay signals each corresponding to a test signal delayed a predetermined period of time, a plurality of multipliers 35 each adapted to receive a delay signal and the output of the system to produce a corresponding plurality of product signals and a plurality of low pass filters 36 each adapted to receive a product signal and to produce a plurality of averaged product signals which are indicated on a recorder 37, so as to represent the required impulse response. The technique described is particularly applicable, for example, to measuring the dynamic characteristics of a control system for a machine tool whilst it is actually in operation. When the system under test has a variable signal applied to it whose bandwidth is considerably greater than its own, the impulse response of the system is approximately equal to the cross correlation function formed by combining the output of the system with successive delayed versions of the input. A test signal of binary form is generated by the source 30 by sampling a wide band noise source at regular intervals and setting the signal to + 1 if the sample is positive and -1 if negative. This test signal may be stored on one track of a continuously rotating drum which carries a second track used as a precessing circulating register to provide the desired time delays, and a third track carrying a timing signal which actuates a plurality of gates in sequence to connect the shift register output to the stores 33 and 34. The output from the store 33 is fed into the system under test through the summing point 20, and the output from the system is fed to the binary multipliers 35, and thence to the filters 36 either directly or inverted according to the way in which the multiplier has been set in response to the signals from the storage units. In this embodiment the outputs from the filters are fed through a selector unit in sequence to the Y-plates of a cathode say oscilloscope, whilst a deflection voltage proportional to the corresponding delay is applied to the X plates, so that a plot of the response characteristic appears on the screen. The record may be alternatively made using a pen recorder, or stored for further computation. An embodiment using flip flops instead of a magnetic drum is suggested for the shift register. Rules are given in the Specification for the times at which the transitions of the discrete interval binary signals may occur.
Patent GB-401614-A (GB)
Title: Improvements in and relating to welding
IPC: G01N21/03
Filed: 1933-06-19
Abstract: 401,614. Uniting by fusion. DORMAN, LONG, & CO., Ltd., Zetland Road, and JUDGE, E. T., 101, Borough Road, both in Middlesbrough. June 19, 1933, No. 17426. [Class 83 (iv).] In fusion welding T and similar joints by the aid of extraneous welding metal such as a filler rod, metal electrode &c., one of the sections is provided with a groove to receive the other section, leaving symmetrical troughs on each side to receive the added welding metal. One section is formed with shaped flanges b to form a groove in the bottom of which the other section is placed, leaving troughs a on each side for receiving the welding metal. The troughs are of gradually increasing cross sectional area from the bottom upwards, the ratio of increase being preferably more gradual from the bottom to an intermediate point than from this point to the top. Contraction on cooling causes bending at section A-B and thus cambered distortion is eliminated.
Patent GB-222582-A (GB)
Title: Net for pelagic fishes
IPC: A01K73/02
Filed: 1923-07-05
Abstract: 222,582. Boer, R. de, and voogt, H. W. de. July 5, 1923. Addition to 203,273. Trawling gear ; net floats.-The two floating boats 6 from which the net is suspended as described in the parent Specification are connected by a cable 22 which limits the distance between the boats and thereby permits the net to remain at a predetermined depth according to the length of the suspending ropes 4 and the ropes 21 attached to the lower edge of the net and to the hauling cable 17. The floating boats 6 are provided with a wale 11, height-rudder 12, a hoisting eye 14, and direction flags 13. The keel 5 consists of a hollow body set at an angle to the axis of the boat and having one side 18 flat or convex, the other side 19 convex to offer small resistance to trailing while producing strong sheering action. The sinkers 10 are torpedoshaped.
Patent GB-938787-A (GB)
Title: Substituted aralkylamines
IPC: C08G69/26
Filed: 1960-05-18
Abstract: Polyamides are produced by reacting polybasic acids, such as adipic and terephthalic acid, with an aralkyl diamine having the general formula <FORM:0938787/IV(a)/1> in which R is a hydrogen atom or methyl group, Ar is a divalent aromatic hydrocarbon group, and each R1 and R2 is a hydrogen atom or an alkyl or aryl group.  For the preparation of the diamines (see Group IV(b)).ALSO:Aralkyl diamines having the general formula <FORM:0938787/IV(a)/1> (in which R is a hydrogen atom or a methyl group, Ar is a divalent aromatic hydrocarbon group, and each of R1 and R2 is a hydrogen atom or an alkyl or aryl group) are made by reducing a dinitrile of the formula <FORM:0938787/IV(a)/2> in the presence of ammonia or an amine.  The reduction is preferably effected with hydrogen, in the presence of a nickel catalyst, at a temperature of 70 DEG -150 DEG C. and a pressure of 50-300 atmospheres.  The required dinitrile may be obtained by heating the appropriate di-halogen compound with a solution of sodium or potassium cyanide.  If desired, primary diamines of the above formula wherein R1 and R2 = H may be submitted to alkylation or arylation.  In Example 1, para (alpha-chloroethyl)benzyl chloride is refluxed with an aqueous-methanolic solution of sodium cyanide.  The product is extracted with benzene, and the extract is submitted to distillation to isolate para-(alpha-cyanoethyl) benzyl cyanide. This compound, mixed with Raney nickel a methanolic solution of ammonia, is hydrogenated at a pressure of 1800-2000 p.s.i. and a temperature of 100 DEG C. Methanol is removed from the filtered product, and there is obtained 2-(41[beta-amino-ethyl]phenyl)-1-propylamine.  In Example 8, the product of Example 1 is heated with bromobenzene, in the presence of copper powder, to obtain 2-(41-[beta-phenylamino-ethyl] - phenyl) - 1 - (N-phenyl) - propylamine.  Example 3 relates to the conversion of 4-(alpha-cyanoethyl)-41-cyanomethyl diphenyl into 2-(41-[beta-aminoethyl]-diphenyl-411)-1-propylamine. In Example 9, the product of Example 3 is heated with n-butanol, in the presence of Raney nickel, to obtain 2-(41-[beta-n-butylaminoethyl] - diphenyl-411)-1-(N-n-butyl)propylamine.  Examples 2 and 4 relate to the preparation of diamines having a naphthalene or an anthracene nucleus, respectively.  In Example 5, para-(alpha-cyanoiso-propyl)benzyl cyanide is hydrogenated in the presence of liquid ammonia to give 2-(41-[beta-aminoethyl]phenyl)-1-isobutylamine.  In Example 6, para-(alpha-cyanoethyl)benzyl cyanide is hydrogenated in the presence of ethylamine to give 2-(41-[beta-ethylaminoethyl]-phenyl)-1-(N-ethyl)propylamine. These diamines may be reacted with polybasic acids to produce polyamides (Group IV(a)).
Patent GB-1430271-A (GB)
Title: Transducer for a flow gaauge
IPC: G01F1/20
Filed: 1973-04-12
Abstract: 1430271 Rotary fluid-flow meters SVENSKA UTVECKLINGS AB 12 April 1973 [21 April 1972 (2)] 17647/73 Heading F1F [Also in Division G1] In a flowmeter a housing 1 has a tangential inlet 6 through which fluid entering the body is brought to a swirl to rotate a body such as a ball 8 or vane 59 Fig. 14 (not shown) and the arrangement is such that an axially arranged outlet 4 is provided with a tangential outlet 10. The housing may be transparent or have a transparent window and the revolution of the ball 8 or vane 59 may be counted by a light source 61, a photo tube 62 and a counter 63. The ball may be of a plastics material filled with a suitable material to modify the density, Figs. 9a, b and c (not shown). The housing may comprise inlet and outlet parts and the ball be arranged to rotate in a groove Fig 13 (not shown) or the ball or vane around spindles between the two parts, Figs. 14 to 17 (not shown). An arrangement for lubricating a bearing between the vane and spindle is disclosed in the Specification, Figs. 18 and 19 (not shown). The groove in which the ball moves may have a radius slightly greater than that of the ball joined by a flat portion Fig. 8 (not shown).
Patent GB-765178-A (GB)
Title: Improvements in or relating to electrical switches of the kind utilising mercury or other conducting liquids
Inventor: WATT DUDLEY ALBERT
IPC: H01H29/28
Filed: 1952-07-14
Abstract: 765,178. Mercury and other conducting- liquid switches; controllers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 14, 1953 [July 14, 1952], No. 17658/52. Classes 38(3) and 38(5) [Also in Group XXXVI] Conductor parts 1, Fig. 1 are separated by a narrow gap 2 which may be bridged by mercury or other conducting liquid introduced through a central cavity 4 in one conductor part. The cavity may be connected to a vertical duct 7 through a valve V1 so that the head of mercury therein maintains the gap full. A chamber 10 surrounds the gap and when gas pressure is applied thereto, the mercury in duct 7 engages a contact 9 to operate a motor M and open valve V1 thereby draining off the mercury and breaking the circuit. The mercury is returned tb the gap by a pump. Alternatively, the capacity of duct 7 may be increased to constitute a reservoir into which the mercury is blown, thereby eliminating valve V1. Again, valve V1 alone may be used for emptying the gap. Fig. 2 shows a resistance switch which may be used as a motor starter, in which a tongue 15 of resistive material extends into cavity 4 which has a liner 16 of similar material. Means such as a pump or reservoir are provided to control the level of mercury so that as the level is raised from the opencircuit position shown, the amount of series resistance is gradually reduced until the gap 2 is filled and the resistance short-circuited. The tongue 15 may be brought out through the wall of duct 17 and connected through a switch with the duct wall, Fig. 3 (not shown). The switch is opened after the liquid has broken contact with the tongue and vice versa to avoid sparking in the duct. Two switches as shown in Fig. 2 are shown in Fig. 4 connected to form a resistance change-over switch. The conducting parts la are commoned and the ducts 17b, 17c connected together through a valve V3. Pressure chambers 10b, 10c surround the gaps of the switches and by applying pressure to one chamber and opening valve V3, the mercury may be blown from the associated gap to the gap of the other switch. Means may be provided for adjusting the gap and this may be effected as the switch operates, to facilitate breaking of the circuit. In Fig. 5 a load L supplied from a generator G through a switch S according to the invention has a diode D and control resistance R connected across it to absorb stored energy on the load side and facilitate rapid switching. Specification 765,177 is referred to.
Patent GB-807540-A (GB)
Title: Improvements in fuel injection valves for diesel engines
IPC: F02M61/18
Filed: 1957-06-04
Abstract: 807,540. Fuel injectors. ESSO RESEARCH & ENGINEERING CO. June 4, 1957 [June 15, 1956], No. 17681/57. Class 7(3). A fuel injector comprises a conical valve seat 33 with a conical angle of between 20 and 40 degrees and a needle valve 41 having a portion 60 with the same conical angle as the seat and a second portion 61 with a conical angle greater than that of the seat by 2 to 6 degrees. As shown the angle of the seat and of the needle portion 60 is 30 degrees and that of the portion 61 is 34 degrees. The nozzle spraying tip 39 is surrounded by a water jacket 37 with feed and return flanges 55, 56, the cooling being sufficient to maintain the nozzle tip at a temperature of about 140‹F. and prevent combustion residues building up thereon. When used to inject heavy oil, the supply pipe to the nozzle is heated by steam.
Patent GB-436572-A (GB)
Title: Improvements in and relating to electric current control devices
IPC: B23K11/24
Filed: 1934-01-05
Abstract: 436,572. Switching systems for consuming devices; thermionic valve circuits. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Electric Controller & Mfg. Co. ; 2706, East 79th Street, Cleveland, Ohio, U.S.A.) Jan. 5, 1934, No. 11705/35. Divided out of 431,518. [Class 38 (iv)] [See also Group XL] The subject-matter of this Specification is identical with that of Specification 431,518, but the claims differ.
Patent GB-1378873-A (GB)
Title: Polymer composition
IPC: C08L101/00
Filed: 1971-05-28
Abstract: 1378873 Graft polymer compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 11 May 1972 [28 May 1971 27 Aug 1971] 17712/71 and 40273/71 Heading C3G A graft polymer composition comprises (a) at least one compound selected from aromatic monocarboxylic acids, monocarboxylic acids which contain at least one -OH group and are capable of forming a ring anhydride, polycarboxylic acids containing not more than four carboxylic acid groups and not more than one atom of an element other than carbon, hydrogen or oxygen in the molecule and anhydrides of such acids and (b) a graft polymer obtained by grafting an unsaturated dicarboxylic acid or the anhydride thereof on to a propylene polymer wherein 1 to 90% of the functions contained in the acid or anhydride groups are present in the acid or anhydride component of the graft polymer. The composition may be prepared by mixing a solution of component (a) with the graft polymer, or a solid component (a) with the graft polymer, or by preparing the graft polymer using an excess of unsaturated acid or anhydride and, when the grafting is completed, not removing the exess acid or anhydride, and adding if necessary an amount of the same or a different acid or anhydride. Examples are given in which (i) a masterbatch comprising polypropylene and maleic anhydride or maleic acid is blended with polypropylene/ maleic anhydride graft polymer, polypropylene and glass fibres coated with gamma-aminopropyltriethoxy silane, (ii) the maleic acid or anhydride in the masterbatch of (i) is replaced with succinic, fumaric, lactic, citric, adipic, benzoic, phthalic, thiodipropionic, malonic, oxalic, tartaric, itaconic or nitrilotriacetic acid or with phthalic, benzoic, succinic or glutaric anhydride, pyromellitic dianhydride or a dianhydride of formula (iii) a blend of polypropylene grafted with itaconic acid and free itaconic acid is used.
Patent GB-660005-A (GB)
Title: Centrifugal pumps provided with means for automatic starting of suction
IPC: F04D9/02
Filed: 1948-07-02
Abstract: 660,005. Centrifugal pumps. GUINARD, P. A. July 2, 1948, No. 17834/48. Class 110(i) In a centrifugal pump of the type in which priming is effected by the circulation of a spare volume of water in a closed circuit so as to remove emulsified air from the suction side to the delivery side of the pump, the spare water being contained in a delivery chamber which is connected to the suction pipe of the pump during priming, communication of the chamber with the atmosphere is controlled by a vent valve which is connected to a delivery check valve. The priming may be assisted by a water-ring pump. In one embodiment, Fig. 2, when the delivery check valve 5 lifts on completion of priming, a groove 27 on the valve spindle 26 moves away from a duct 30 so as to cut off the communication of the delivery chamber through duct 30 and a duct 29 with the atmosphere. In a modification, Fig. 7, the communication with the atmosphere is established by way of a port 36, chamber 38 and port 37. When the check valve 5 (not shown) lifts, a crank 33 connected to its spindle lifts a valve 35 so as to close the port 37.
Patent GB-1101794-A (GB)
Title: Improvements in or relating to new substituted oxindoles and the manufacture thereof
IPC: C07D209/34
Filed: 1965-04-28
Abstract: Novel 31,31-disubstituted-spiro -[indoline-3,21-oxiran]-2-ones of the general formula <FORM:1101794/C2/1> where R is H or C1- 8 alkyl, and R1 and R2 are alkyl, phenyl, alkylphenyl, alkoxyphenyl, halophenyl, naphthyl, aralkyl or pyridyl, are prepared by epoxidation of a 3-(di-substituted-methylene)oxindole with aqueous hydrogen peroxide in the presence of a basic catalyst. The 3-(di-substituted methylene) oxindoles have the general formula <FORM:1101794/C2/2> and the invention also includes such compounds per se.  They are prepared by heating together an appropriate 3-unsubstituted oxindole and a ketone of formula O=CR1R2.  The compounds of the first general formula have pharmaceutical properties.ALSO:Therapeutic compositions suitable for oral or parenteral application comprise a compound of the general formula <FORM:1101794/A5-A6/1> where R is H or C1-8 alkyl, and R1 and R2 are C1-8 alkyl, phenyl, substituted phenyl, naphthyl, aralkyl, or pyridyl.  The compositions are active as sedatives, diuretics, anticonvulsants, enzyme inhibitors, and sleep potentiators, and may be used in conjunction with hexobarbital.
Patent GB-165755-A (GB)
Title: Improved power transmission gear
IPC: F16H3/66
Filed: 1921-07-01
Abstract: Fatty acids of the palmitic acid series are prepared by oxidizing butyl alcohol and then subjecting the butyric acid produced to simultaneous hydrogenation and polymerization.  Butyl alcohol, along with steam and oxygen-or ozone-containing gases, are passed through a heated apparatus, preferably comprising a nest of tubes constructed of or containing any known oxidation catalyst, e.g. platinum.  The butyric acid formed is condensed, purified and concentrated, and is then forced with hydrogen into a heated autoclave constructed of or containing any known hydrogenation catalyst, e.g. palladium.  The final products, consisting of fatty acids of high melting point, are condensed, filtered and distilled.  The butyl alcohol, as well as the hydrogen, may be obtained as a by-product in the biological manufacture of acetone.  The reacting materials must be free from impurities.  An apparatus is described in general terms.
Patent GB-425976-A (GB)
Title: A method of drying sludges
IPC: F26B5/00
Filed: 1933-06-23
Abstract: In the drying of sludge containing very fine particles, which may be in a state of colloidal subdivision, in centrifuging machines, filter presses, filter flasks, suction filters, drum and like rotary filters and worm presses with and without filtering devices, the sludge is subjected to a preliminary treatment, consisting in the addition of precipitating agents which cause the finest constituents to coagulate.  Preferably the sludge is intimately mixed with the precipitating agent, if necessary with agitation, and then allowed to stand for a short while to settle. Suitable precipitating agents are milk of lime, starch, oil emulsion, resin emulsion, and sludges treated thereby are fine coal, coal sludge, ore sludge, metal sludges, petroleum sludge, stone and other sludges of the chemical industry.
Patent GB-547325-A (GB)
Title: Process for the purification of magnesium oxide produced from sea water, brines and like liquors containing convertible magnesium salts
IPC: C01F5/08
Filed: 1940-12-20
Abstract: 547,325. Magnesium oxide. OCEAN SALTS (PRODUCTS), Ltd., and PRYTHERCH, W. E. Dec. 20, 1940, No. 17958. [Class 1 (iii)] Magnesium oxide obtained from the precipitate formed by treating seawater, brines &c. with calcium hydroxide is purified by calcining it, forming a slurry and adding the slurry to seawater &c. which has been pretreated, as by calcium hydroxide, for the removal of bicarbonates. The process may be carried out in conjunction with that of Specification 553,731, according to which excess of calcium hydroxide is used in the pretreatment and a precipitate containing magnesium hydroxide is obtained.
Patent GB-297518-A (GB)
Title: Improvements in automatic telephone systems
IPC: H04Q3/62
Filed: 1927-07-06
Abstract: 297,518. O'Dell, A. E., (Deutsche Telephonwerke und Kabelindustrie Akt.-Ges.). July 6, 1927. Automatic and semi-automatic exchange systems.-In a private branch exchange in which the main exchange trunks terminate in switches which serve as call-finders for outgoing calls, and as connectors for incoming calls, when the P.B.X. operator offers a preferred call to a subscriber who is already engaged, the trunk to which he is connected is indicated by a lamp controlled over the test circuit of the associated switch. The test circuit includes the usual test relay P1 and a second relay H1, both of which are energized during conversation, causing the lamp BLI to burn steadily. If the line N1 is seized by another switch, the reduced current in the test circuit due to the parallel path through relays P2, H2 allows relay HI to fall back, causing the lamy BL1 to flicker. A separate lamp may be used for this purpose. The operator may release the existing connection by pressing the key TT1. Each subscriber's individual relay T is such that when energized only over its lowresistance right-hand winding, as when the subscriber initiates a call, it attracts only its light armatures.
Patent GB-992391-A (GB)
Title: Device permitting the examination of objects whilst experiencing the sensation of relief
IPC: G02B30/25
Filed: 1961-05-17
Abstract: 992,391. Polarizing apparatus. J.DELPIERRE. May 17, 1961 [May 25, 19661, No. 18003/61. Heading G2J. In stereoscopic viewing apparatus in which a pair of elements 1, 2 are provided which polarize the light passing therethrough in directions normal to each other, the elements 1, 2 are arranged slidably on a plane transparent support 11 and bear against each other along a common edge so that by raising and lowering the common edge the relative inclination of the elements 1, 2 may be varied. As shown each element has one edge provided with a pair of U-shaped metal clamps 3, 4, which are engaged by the polepieces 5, 6 of a magnet 7 rotatable about a horizontal axis by means of a knob 9. Carbon dioxide or other coolant may be injected through nozzle 10.
Patent GB-145770-A (GB)
Title: Improvements in and connected with aircraft rudder arrangements and tail planes
IPC: B64C9/00
Filed: 1920-07-02
Abstract: 145,770. Daimler-Motoren-Ges. March 21, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Steering and balancing.-The usual rudder h, elevator f, tail-fin e, and tail-plane d are arranged on a tail member b which is adjustable about a longitudinal axis c.
Patent GB-916379-A (GB)
Title: Improvements in and relating to semiconductor junction units
Inventor: MADDEX KENNETH ARTHUR
IPC: H01L29/00
Filed: 1960-05-23
Abstract: 916,379. Semi-conductor devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 21, 1961 [May 23, 1960], No. 18139/60. Class 37. A PN junction is formed with a semi-conductor body 2 (Fig. 2) of one conductivity type by evaporating a doping material characteristic of the opposite conductivity type through an inert mask 4 (Fig. 2) with a chamfered inner edge to form a layer 1 with a central region of uniform thickness and chamfered edges and subsequently alloying or diffusing the doping material into the body.
Patent GB-849384-A (GB)
Title: Improvements in or relating to parking meters
Inventor: FENNELL CYRIL HENRY
IPC: G07F17/24
Filed: 1957-06-07
Abstract: 849,384. Coin-freed parking meters. PARKING METERS (EUROPE) Ltd. July 3, 1958 [June 7, 1957], No. 18200/57. Drawings to Specification. Class 27 The parking meter of Specification 849,381 is described and the claims mainly relate to the time-setting pawl 75 and teeth 80, 81. Specifications 849,382 and 849,383 also are referred to.