baber/WOPTO huggingface dataset:
Patent GB-1052471-A (GB)
IPC: G05B19/04
Abstract: 1,052,471. Machine tool details. H. B. F. JENSON. Nov. 22, 1962 [Nov. 27, 1961], No. 42322/61. Headings B3B and B3C. [Also in Division H3] A control system for a machine tool comprises a plurality of sensing devices (e.g. switches) each indicative of the state of an operation, signals from the devices being shaped by a two-stage electronic circuit into rectangular forms for controlling a stepping switch which distributes control signals to appropriate operation performing members. Automatic control of drilling machines.-Control systems are described for drilling machines of the type disclosed in Specification 878,902. As shown in Fig. 4, the closure of any sensing switch 41 ... 45 following the completion of some operation, causes a positive signal on line y which is fed to a bi-stable circuit TSF and turns off transistor T 1 , turning on T 2  and energizing solenoid 50 which steps the uniselector R to the next position. Solenoid 50 is released by contacts 52 of the uniselector, the opening of which also resets the transistor circuit T 1 , T 2  to its original conductive state. Each time transistor T 2  is turned on, T 4  is also turned on, giving a positive signal at the collector which is passed via bank D 2  of the uniselector and a plug board M 2  to energize the appropriate electronic relay RA ... RC. The resetting is facilitated by transistor T 3 , controlled by a bank D 4  of the uniselector. Energization of an electronic relay RA ... RC activates a member H1 ... H3 which initiates or terminates a machine function. Modifications.-In Fig. 6 (not shown), electronic relays RA ... RC comprise a bi-stable pair of transistors controlling an electromechanical relay RV. The circuit is arranged so that relay RV is energized when the base of one transistor (T<SP>1</SP>1) receives a positive signal and remains energized until a negative signal is received. In position 2 of the stepping switch R, relay RV is energized as described above by a positive signal from transistor T 4  and remains energized until position 5 of the stepping switch is reached when the relay is released by a negative signal from TSF, fed bia a bank (D 3 ). In Fig. 5 (not shown) an additional transistor (T<SP>1</SP>4) feeds negative signals on line X to the common points of relays RA ... RC, the individual points being coupled via diodes to respective lines u1 ... u5. The ejection of a workpiece may be detected by a photo-electric circuit which operates the circuit TSF.
Patent GB-1143539-A (GB)
IPC: B01J31/02
Abstract: 1,143,539. Dimerization of unsaturated nitriles. NATIONAL DISTILLERS & CHEMICAL CORP. 25 Feb., 1966 [2 March, 1965], No. 8501/66. Heading C2C. Unsaturated α,α-dinitriles are prepared by dimerizing an acrylonitrile compound of the formula R 1 R 2 C = CHCN where R 1  and R 2  are hydrogen or C 1-10  organic radicals, under an inert atmosphere and in the presence of an inert solvent and a tricycloalkyl-phosphine catalyst, other than tricyclopentyl or tricyclohexyl phosphine. It is preferred to effect the reaction at 0-150 C. in the presence of a solvent which is a C 6-10  aromatic hydrocarbon optionally in admixture with a C 2-12  alkanol. Examples relate to the preparation of 2- methylene glutaronitrile from acrylonitrile in the presence of tricycloheptyl or tricyclohexyl phosphine.
Patent GB-1143871-A (GB)
IPC: F16F9/36
Abstract: 1,143,871. Constant-force hydraulic springs. ZENTRALE ENTWICKLUNG UND KONSTRUKTION ZEK HYDRAULIK VEB. 3 Jan., 1967, No. 329/67. Heading F2S. A substantially constant-force hydraulic spring comprises a liquid-filled chamber 1 which is closed by a member 2 having a tubular extension 2a, and a piston 6a which has extensions 5, 6 which extend through upper and lower guide bushes 3, 8 in the extension 2a and against which a high pressure seal 7 bears, the bore of the extension 2a tapering conically inwards along the whole, or part, of its length and communicating, through a bore 2b, with the space within the chamber 1. The piston extension 6 passes through a screw cap 4 which secures a stripper ring 5 to the guide bush 3, the lower bush 8 being secured to the tubular extension 2a by a screw cap 9. The effective cross-section of the seal upon which the fluid pressure acts decreases as the piston is moved progressively inwards. In a modification, Fig. 2 not shown, a guide tube (13) is secure between the end plates (11, 12) of liquid-filled housing (10) and a piston (20b) has an upper extension (20a) which passes through a seal in the end plate (11), and a lower extension (20c), upon which are secured a high pressure seal (22) and a bearing bush (23) by means of a nut (24), the bush (23) sliding in the lower part of the guide tube (13) which is of cylindrical shape. The piston (20b) with a high pressure seal (21) works in a downwardly tapering part of the guide tube. The housing (10) is sealed by high pressure seals (15, 16) which are backed respectively by supporting rings (17, 18). The effective cross-section for the spring force is equal to the area of the incoming seal 21 minus the area of the outgoing seal (22) which is constant. Only a slight change in the area of the seal (21) is effective to cause a considerable change in the spring force which can be arranged to have a horizontal or even descending characteristic. Bores (13a) connect the tube space between the seals (21, 22) with the space (14) within housing (10), and the space within the guide tube (13) around the upper end (20a) of the piston and the lower tube space may be interconnected e.g. to equalize the pressure.
Patent GB-1228485-A (GB)
IPC: E05C17/18
Filed: 1968-06-19
Abstract: 1,228,485. Window catch and stay bar. I. A. ASP. 19 June, 1968 [26 June, 1967], No. 29224/68. Heading E2F. An adjustable window catch comprises a catch or stay bar 16 pivotally mounted at one end by means of a spherical member 15 in an attachment means 12 fixed to the window frame 10, and a catch fitting 25 fastened to the casement 11 and provided with a recess 28. The catch bar is provided with a plurality of retaining members 21 for latching engagement with the innermost, arcuate portion of the recess after the bar has been inserted completely into the recess and rotated through 90‹ about its longitudinal axis. The spherical member 15 has a pin 30 protruding outwardly in the axial direction of the bar which restricts the movement of the catch bar by bearing against stop members 31, 32 fitted in the bearing fitting 13 formed in the attachment means 12.
Patent GB-1229444-A (GB)
IPC: B01J20/18
Filed: 1968-07-11
Abstract: 1,229,444. Hydrocracking. UNION OIL CO. OF CALIFORNIA. 11 July, 1968, No. 33218/68. Heading C5E. In the catalytic hydrocracking of hydrocarbons wherein a crystalline zeolite catalyst containing a minor proportion of Group VIII and/or Group VIB metal hydrogenating component is utilized at elevated temperatures and pressures, a method of preconditioning said catalyst whereby more stable hydrocracking temperatures can be maintained, which comprises subjecting said catalyst to accelerated precoking by contact with a hydrocarbon feedstock at a hydrogen partial pressure at least 100 p.s.i. below the hydrogen partial pressure utilized during said hydrocracking step, and at elevated temperatures at least as high as the initial temperature in said hydrocracking, so as to effect deposition of at least about 2 weight per cent of non-volatile coke thereon with resultant substantial partial deactivation thereof. The zeolite may be base-exchanged with Mg, Ca, Zn or rare earths, partly de-cationized and partly polyvalent metal-containing. The metal component may be Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt, Cr, Mo, W, U or mixtures thereof and may also contain Mn. In the examples gas oil is cracked to gasoline.
Patent GB-1231154-A (GB)
IPC: C02F11/121
Filed: 1969-03-25
Abstract: 1,231,154. Treating sewage sludge. VON ROLL A.G. 25 March, 1969 [25 March, 1968], No. 15645/69. Heading C1C. Raw and/or digested sewage sludge is dewatered by bringing the pH of the sludge to between 5À5 and 6À5, heating the sludge at not less than 150 C. for not more than an hour, and then fittering or centrifuging the sludge.
Patent GB-1231254-A (GB)
IPC: H04N1/12
Filed: 1968-09-20
Abstract: 1,231,254. Facsimile apparatus. MUIRHEAD Ltd. 4 July, 1969 [20 Sept., 1968], No. 44843/68. Heading H4F. Two carriages 14, 17 bearing the transmitting and/or receiving heads of a facsimile apparatus are reciprocable on respective parallel tracks 15, 16 and are coupled by an inextensible tensioned band 18 which passes around a pulley 19 displaceable parallel to its own axis so as to adjust the relative positions of the two carriages. One of the carriages 14 is connected to a reciprocating drive and its motion is transmitted through the band 18 to the other carriage 17 which thus moves simultaneously with the carriage 14 but in the reverse direction. In the embodiment the reciprocating drive includes an endless belt 5 driven at constant speed with a member 11 extending laterally therefrom to engage in vertical sliding relationship with a channel guide 13 on the carriage 14. The adjustment of the pulley 19 is effected by means of a bolt 22 extending through a fixed member 24. The band 18 is tensioned by means of a spring 34 operating between the carriage 14 and a second inextensible band 30 passing round a fixed pulley 31 and connected to the carriage 17.
Patent GB-1231602-A (GB)
Inventor: WEISS DONALD ERIC
IPC: B01J47/018
Filed: 1968-11-20
Abstract: 1,231,602. Ion exchange. COMMONWEALTH SCIENTIFIC & INDUSTRIAL RESEARCH ORGANIZATION. 20 Nov., 1968 [22, Nov., 1967], No. 55044/68. Heading B1J. [Also in Divisions C3 and H1] An aqueous solution is demineralised by a process in which the solution is contacted with an ion exchange composite in particulate form, the composite comprising a homogeneous matrix of a water-insoluble polymer which is permeable to ions and to water and in which is dispersed particulate acidic ion exchange material and particulate basic ion exchange material. Examples relate to the removal of sodium chloride from saline solutions by composites in which the acidic ion exchange material is a weak cation exchange resin and the basic ion exchange material is a weak anion exchange resin. The matrix also may have dispersed therein particulate mateerial which modifies the magnetic properties of the composite, for example gamma iron oxide (see Examples 4 and 13) and/or particulate natural or synthetic material which modifies the density of the composite, for example gamma iron oxide (see Example 14), titanium dioxide, zirconium dioxide, stannic oxide or lead sulphide. The composite may be regenerated by contact with water, for example at a temperature equal to or higher than the temperature of the process for demineralising, or with a solution containing dissolved salt(s), for example the solution used in the process for demineralising, at a temperature higher than the temperature of the process for demineralising.
Patent GB-1250343-A (GB)
IPC: C11B1/10
Filed: 1968-12-05
Abstract: 1,250,343. Recovery of solvents from extracts by steam distillation. ROSE, DOWNS & THOMPSON Ltd. 5 Dec., 1969 [5 Dec., 1968], No. 57794/68. Heading B1B. [Also in Division C5] In a process for the separation of solvent from a mixture of oil and solvent by steam stripping followed by condensation, residual solvent vapour is absorbed in oil removed from the stripping stage, and the solution of solvent in oil is recycled to the stripping stage. Solvent, such as hexane, is used to extract oil from vegetable seed in extractor 12, which is maintained at slightly below atmospheric pressure; and the solution of oil in solvent is received in tank 15 whence it is pumped through conduit 17 and heater 25 to evaporator 26 where the solution is contacted with steam, the effluent vapours of solvent and steam being passed to atmospheric condenser 27. The solution of solvent in oil withdrawn from the separator at the top of evaporator 26, is stripped with steam in column 28, which is operated under partial vacuum, and the vapours are passed to condenser 27. Some of the oil withdrawn from the base of column 28 is withdrawn from the system. The condensate from condenser 27 flows to tank 31 where water is separated from solvent. Water contaminated with solvent is drawn off to boiler 33, whence the vapours are passed to condenser 27, and waste water is discharged. A mixture of solvent vapour, water vapour and air is drawn from extractor 12, condenser 27 and tank 21 via conduit 22 into condenser 35, whence the residual gaseous mixture flows to column 36 where it is scrubbed with some of the oil pumped from the bottom of stripping column 28 via cooler 37. Air is withdrawn from the top of column 36 by pump 39. Some of the solution of solvent in oil, withdrawn from the base of column 36, is recycled to this column through heater 42, and the remainder of the solution is passed through heater 40 to the top of column 28. Spent seed, discharged from extractor 12, is treated with steam in desolventiser 19; and the mixture of solvent vapour and air is scrubbed with liquid solvent in scrubber 20 before being passed to condenser 27. The solvent recovery process can also be applied in the extraction of oils from animal bones, and in the refining of lubricating oils.
Patent GB-1250734-A (GB)
IPC: C08F283/10
Filed: 1970-02-06
Abstract: 1,250,734. Graft polymer compositions. FARBENFABRIKEN BAYER A.G. 6 Feb., 1970 [6 Feb., 1969], No. 5736/70. Heading C3G. A coating composition contains (A) a graft polymer of an epoxide derived from a polyhydric phenol and containing more than one epoxide group in the molecule and, optionally, 1.5 to 7% by weight of hydroxyl groups, the epoxide being grafted with a mixture of (a) 99.5 to 60% by weight of methyl methacrylate and (b) 0.5 to 40% of an ethylenically unsaturated acid and/or acid anhydride and (c) 0 to 20% of an additional ethylenically unsaturated monomer, free from acid groups, the graft base content of the graft polymer being from 30 to 98% by weight and (B) an aliphatic, cycloaliphatic or heterocyclic amino compound containing at least 3 hydrogen atoms attached to the nitrogen of the amino groups. The epoxide may be modified by reaction with, e.g. a mono- or polyamine, carboxylic acid or acid anhydride, polyalcohol or mono- or diisooyanate prior to being grafted, or the graft polymer may be reacted during or after graft polymerization with an aliphatic epoxide. In examples, lacquers are prepared containing a bisphenol A-epichlorohydrin epoxide resin, the graft monomers (b) and (c) and amine compound (B) being as follows: (1) acrylic acid and a polyamido amine or diethylene triamine; (2) methacrylic acid and diethylene triamine; (3) acrylic acid and styrene, or acrylonitrile, and diethylene triamine, triethylene tetramine or tetraethylene pentamine; and (4) maleic acid anhydride and diethylene triamine or a polyamido amine. TiO 2  is incorporated in some of the lacquers.
Patent GB-1252379-A (GB)
IPC: G01L1/22
Filed: 1970-05-05
Abstract: 1,252,379 Measuring force: compensating for lead impedances. J. H. STOVER. May 5, 1970 [May 7, 1969], No.21527/70. Headings G1N and G1U. In order to compensate for lead 15 1 , 16, Fig. 2, impendances to a strain gauge 72, forming part of a Wheatstone bridge, the bridge output is taken via an additional lead 15 2  from a terminal of the strain gauge thereby putting the two leads 15 1 , 16 to the strain gauge in different arms of the bridge so that their impedances, and changes therein due for example to temperature, tend to cancel. The system is calibrated by first applying a datum load to the strain gauge and adjusting a potentiometer 43 to provide a zero output 52, and then applying a known load and adjusting the gain of an amplifier 50 to provide the desired output 52.
Patent GB-1252467-A (GB)
IPC: H03F3/45
Filed: 1969-02-28
Abstract: 1,252,467. Transistor amplifying circuits. RCA CORPORATION. 28 Feb., 1969. [28 Feb., 1968], No. 10734/69. Heading H3T. [Also in Division G1] An amplifying arrangement of high input impedance which may be used for measuring voltage comprises a pair of insulated gate fieldeffect transistors 10, 12, the input being applied to the gate of transistor 10 and the gate of transistor 12 being earthed via resistor 56 and decoupling capacitor 58. The sources of transistors 10, 12 are connected via a balancing potentiometer 38 to a source of positive supply, to which their substrates are connected directly. The drains of transistors 10, 12 are directly connected to the bases of bipolar transistors 32, 54 respectively, the collectors of which are directly connected back to the sources of the transistors 10, 12 respectively. The emitters of transistors 32, 54 are provided with load resistors 66, 68 respectively, the meter 52 being connected between the two emitters, in series with sensitivity-adjusting variable resistor 50. Decoupling capacitors 72, 74 and 36, 64 are provided, as the arrangement operates on a D.C. input. This input is applied to the gate of transistor 10 via series resistors 18, 20, capacitor 28 being shunted between the gate and earth and a gasdischarge tube 24 between the join of resistors 18, 20 and earth: this arrangement provides an overload protection for the gate of transistor 10, the RC circuit 20, 28 delaying the application of an overload voltage to the gate until the tube 24 has struck.
Patent GB-1256985-A (GB)
IPC: G03B21/43
Filed: 1970-08-04
Abstract: 1,256,985. Film-winding apparatus; cinematography. RICOH K.K. Aug. 4, 1970 [Sept.20, 1969], No.37472/70. Heading G2E. In a cine projector film advance and rewind is controlled by a device comprising an endless belt 29 passing over pulleys 17, 18 on a supporter 16, and over a pulley 28 on the main drive shaft 27 of the projector, the supporter being slidable on pins 19, 20 in response to the tension in belt 29 and the direction of rotation of shaft 27 to bring the belt on either pulley 17 or 18 into frictional driving engagement with wheels 4 or 15 fixed on supply and take-up spindles 2 and 14. The drive to wheel 15 is provided through an intermediate wheel 30. Alternatively, gears on spindles 2, 14 may be engaged by gears on pulleys 17, 18.
Patent GB-1258012-A (GB)
IPC: D06P3/24
Filed: 1969-05-22
Abstract: 1,258,012. After-treatment of dyed polyamide textiles. FARBENFABRIKEN BAYER A.G. 22 May, 1969 [15 June, 1968], No. 26271/69. Heading D1B. The wet fastness of dyeings obtained on textile materials of synthetic polyamides with cationic dyes is improved by after-treating with an aqueous liquor containing an alkali metal or ammonium salt of a condensation product of formaldehyde and an aromatic sulphonic acid of formula I in which A is a diphenyl ether radical, m is a whole number from 0 to 2 and n is 0.5-2 preferably at pH 2-8 at 30-100‹C in presence of formic acid. The polyamide may be anionically modified and may be mixed with standard polyamide in which case the blend may be dyed with cationic and anionic dyestuff before the after-treatment.
Patent GB-1258424-A (GB)
IPC: H02M3/10
Filed: 1969-01-10
Abstract: 1,258,424. Control of A.C. motors. DANFOSS A.S. 18 Jan., 1969 [23 Jan., 1968]., No. 1559/69. Heading H2J. [Also in Division G3] A reversible three phase motor is supplied from an inverter which is connected to a D.C. source by means of a controlled rectifier associated with a quenching circuit. The rectifier is regulated to maintain a constant voltage at the input of the inverter until the load current reaches a predetermined value, whereupon the voltage is reduced to prevent excessive current. The firing and quenching pulses for the controlled rectifier are obtained from a transformer T2 associated with a frequency controller having a unijunction transistor Trl and capacitor C3 which is charged through transistor Tr2. A monostable multivibrator comprises transistors Tr3, Tr4, which are intercoupled through a capacitor C4 for determining the width of pulses passed by the controlled rectifier. The transistor Tr4 controls a transistor Tr5 in series with the primary winding of the transformer T2. The rate of charge of the capacitor C4 is determined by a transistor Tr6 connected to an amplifier Tr7, Tr8. A discriminator receiving signals representing the actual input voltage to the inverter, a reference voltage, and the slip of the motor, as well as a process control signal, is connected to the base of the transistor Tr7, whereby the voltage is held to a set value by means of the transistor Tr6. The effect of the amplifier Tr7, Tr8 is over-ridden, however, by an amplifier Tr9, Tr10, which is rendered effective when the load current signal on lines 6 reaches a given value. When excess current occurs, the frequency drops to a level such that the regulated voltage becomes zero. The inverter comprises a bank of six controlled rectifiers, having a common quenching rectifier. A switch for reversing the motor is adapted to interchange the firing-pulse leads, Fig. 3 (not shown).
Patent GB-1290256-A (GB)
IPC: A23L1/00
Filed: 1970-04-10
Abstract: 1290256 Snack product CPC INTERNATIONAL Inc 10 April 1970 [14 April 1969] 17270/70 Heading A2B [Also in Division C3] A bland-tasting puffed fried snack product is produced by forming shaped articles such as rings, chips or triangles, from a gelatinized shapeable paste of a starch material comprising in combination 30-70% by weight of a crosslinked waxy starch (e.g. milo starch or corn starch) and 30-70% of a cross-linked non- waxy starch (e.g. milo starch, corn starch or tapioca), dehydrating the shaped articles at a temperature of 70-120‹F to a moisture content of 10-18% (alternatively, the drying may be conducted in two stages under different conditions) and frying the shaped articles in deep fat. The starch material may additionally include up to 10% of potato starch, 2-7% of liquid shortening and 0.2-1% of glyceryl monostearate or mono-oleate. The starch material per se should be sufficiently cross-linked e.g. with an alkali metal trimetaphosphate or an anhydride of an organic acid (specified), for the combination to exhibit a Scott viscosity (defined) of 10-23 grams. Salts and cheese, onion or garlic flavouring may be added to the paste or to the snack product. Orange colouring material may be added e.g. to the starch material. The aqueous liquid used in forming the paste may contain specified salts, and spices and colouring material.
Patent GB-1290286-A (GB)
IPC: C07D243/20
Filed: 1971-07-09
Abstract: 1290286 Benzodiazepines UPJOHN CO 9 July 1971 [20 July 1970] 32399/71 Addition to 1243953 Heading C2C Compounds of the general formula (R = H, C 1-4  alkyl, C 3-4  alkenyl, PhCH 2 , (CH 2 ) 1,2 COOH and C 1-3  alkyl esters, (CH 2 ) 2,3 NR 5 R 6  wherein R 5 , 6  = C 1-4  alkyl or R 5+6  = C 4-5  alkylene; R 1-4  = H, C 1-3  alkoxy, C 1-4  alkyl or alkylthio, halogen, NO 2 , CN, CF 3  ; provided that when R 1  = 7-H, CH 3 , halogen, CN, NO 2 , CF 3  and R 3  = 2-H or halogen, R 2,4  are not both H) and their acid addition salts are prepared by the process of the parent Specification from the corresponding 1,3-dihydrobenzodiazepine-2-thione and NH 2 -OR. The above compounds are sedatives and tranquilizers, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1290646-A (GB)
IPC: C07C259/02
Filed: 1971-04-19
Abstract: 1290646 Biocidal application of substituted acetophenones ROUSSEL-UCLAF 19 April 1971 [24 Feb 1970] 22496/71 Heading A5E [Also in Division C2] 2-Hydroxyimino-2-chloro - 4' - hydroxyacetophenone and/or the 3' - hydroxy derivative thereof find application as biocides, particularly in water-based media, e.g. in paper mills or in the treatment of skins or leather or in tanning liquors.