baber/WOPTO huggingface dataset:
Patent GB-340661-A (GB)
Title: Manufacture of new carboxylic acid arylides of the benzene series
Filed: 1929-10-18
Abstract: Carboxylic acid arylides of the benzene series of the general formula: R-CO-NH-R1-CO-NH-R2-OH (where R, R1, and R2 are residues of the benzene series which may contain substituents other than free sulphonic or carboxylic acid groups, and where at least one of the residues R and R1 contains a hydroxy-group, at least one o- or pposition to each hydroxy-group being free) are manufactured by condensing an arylcarboxylic acid R.COOH with an aminoarylcarboxylic acid H2N.R1.COOH by the method of Specification 5444/15 and treating the aroylaminoarylcarboxylic acid R.CO.NH.R1.COOH thus obtained, or its acid chloride, with an aminophenol compound H2N.R2.OH having a free o- or pposition relative to the hydroxy-group.  Alternatively the aminophenol compound H2N.R2.OH is condensed with an aminoarylcarboxylic acid H2N.R1.COOH, or the corresponding nitro-compound, or the acid chloride of either, the product is reduced if necessary, and the compound H2N-R1-CO-NH-R2-OH thus obtained is condensed again with an arylcarboxylic acid R.COOH or its acid chloride.  In examples the following condensations are effected by means of phosphorus trichloride, in toluene or dimethylaniline solution: (1) salicylic acid is condensed with p-aminobenzoic acid to give o1-hydroxybenzoyl-p-aminobenzoic acid, which is condensed with m-aminophenol to give o1-hydroxybenzoyl-p-aminobenzoyl-m11-aminophenol; the same product is obtained by condensing p-nitrobenzoic acid with m-aminophenol, reducing the product and condensing it with salicylic acid; analogous products are obtained by condensing m-nitrobenzoyl-chloride with p-aminosalicylic acid and then with m-aminophenol, or by condensing m-nitrobenzoic acid with m-aminophenol, reducing, and condensing with salicylic acid; (2) m-cresotinic acid with m-aminobenzoic acid yields m1-cresoyl-m-aminobenzoic acid, which with m-aminophenol yields m1-cresoyl-m-aminobenzoyl-m11-aminophenol; similarly m1 - cresoyl - 3 - amino- 4 - methylbenzoylp11 aminophenol is obtained by replacing the m-aminobenzoic acid above by 3-amino-4-methylbenzene-1-carboxylic acid.  In a table the preparation of the following from the appropriate compounds is given: m1-cresoyl-p-aminobenzoyl-m11-aminophenol; m1-cresoyl - m - aminobenzoyl - m11 - aminophenol; o1-cresoyl-p-aminobenzoyl-m11-aminophenol.  Azo dyes, forming upon the material.-The products can be used in the form of their alkali salts for impregnating cotton goods, for instance, for the production of azo-dyes on the fibre.
Patent GB-835476-A (GB)
Title: A process for the production of threads by melt-spinning
IPC: D01D5/08
Filed: 1957-10-10
Abstract: In a melt-spinning process, a nozzle is used having such a high-bore diameter that the ratio between the injection velocity in metres per minute and the thread diameter in millimetres prior to final stretching is between 20 and 80, the injection velocity being maintained between 2.9 and 7.2 metres per minute.  The thread diameter is measured after winding on the bobbin, the thread being preliminarily stretched during spinning.  Hollow threads may be made similarly, and the Figure shows a suitable nozzle.  The body 1 has bores 2 communicating with undercut recesses 3 fed with melt via passages 4, 5.  A core 7 is fitted into a <PICT:0835476/IV (a)/1> bore 6 coaxial with bore 2 so that the remaining part of bore 2 forms an annular orifice.  Core 7 also contains a bore 8 connected to supply pipes 9, 10 through which an inert gas, e.g. nitrogen, may be supplied.  In an example, a melt of polycaprolactam is spun at 275 DEG  C. through a 4-aperture nozzle having individual apertures of diameter 1 mm., using an injection velocity of 7.2 metres/min. and a withdrawal speed of 720 m/min.  The thread diameter measured after winding up is 0.1 mm.  After further stretching to a ratio of 4:1, the thread diameter is 0.05 mm., corresponding to 20 denier.
Patent GB-263615-A (GB)
Title: Improvements in or relating to single-phase induction regulators
IPC: H01F29/12
Filed: 1925-12-16
Abstract: 263,615. Switchgear & Cowans, Ltd., Neep, G. H., and Firth, D. Dec. 16, 1925. Regulating transformers.-In order to obtain approximate proportionality between the amount of voltage boost and the angular displacement of the rotor in an induction regulator, the secondary winding 5 is arranged in two series of slots 4 in the stator uniformly spaced over arcs subtending an angle greater than 90‹, preferably 120‹, and short-circuited compensating windings 8 are arranged in slots 11 formed in the polar faces of the rotor 6 which subtend an angle not greater than 90‹, preferably 60‹. The primary winding 7 is disposed on the rotor, and, in some cases, a portion of the secondary winding may also be disposed on the rotor. Each series of wound stator slots may extend over 180‹, and where this is not the case empty stator slots which may be of different size or spacing are provided on the unwound portions of the stator.
Patent GB-256111-A (GB)
Title: Improvements in fountain pens or other ink or like receptacles
IPC: B43K23/12
Filed: 1925-12-16
Abstract: 256,111. Kovacs, T. Dec. 16, 1925. Fountain-pen barrels and caps; inkstands. - One or more grooves or notches M are formed across the screw-threads of either or both the cap and barrel of a fountain pen or other liquid receptacle to facilitate removal of sediment therefrom during application of the cap, the grooves being so arranged that the cap is incapable of direct axial movement, but must be screwed into or out of position.
Patent GB-587922-A (GB)
Title: Improvements relating to turbo-electric generating plant
IPC: H02P9/00
Filed: 1945-11-26
Abstract: 587,922. Turbo-alternators. ECCLES, W., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 26, 1945, No. 31853. Drawings to Specification. [Class 110 (iii)] [Also in Group XXXV] A turbo-generator for supplying power to a distribution network is provided with means by which it can be maintained in continuous rotation, during off load periods and with the working and vacuum-sealing fluids discontinued, at a speed within the range of onesixtieth to one-tenth of the normal full speed. Current may be circulated through the windings of the generator during the off-load running to keep the windings near their normal working- temperature. The turbo-generator may have a directly coupled exciter with connections to permit the exciter to operate as a motor during the off-load periods and there may be automatic devices to protect the exciter as the turbine gains speed when taking up load. The exciter may also provide the heating current for the generator windings. A separate motor may be used acting through an over-running clutch, or, the normal barring engine may be provided with a two-speed gear-box for the purpose. A directly-coupled oil pump supplied with pressure fluid may be the motor. The motor may have means for adjusting its speed and if the motor is the exciter or a separate direct current motor it may be supplied with current from a motor generator with Ward-Leonard control.
Patent GB-650743-A (GB)
Title: Improvements in automatic frequency-correction circuit-arrangements
IPC: H03J7/02
Filed: 1947-12-02
Abstract: 650,743. Automatic frequency control systems. PHILIPS ELECTRICAL, Ltd. Dec. 2, 1947, No. 31853. Convention date, Dec. 5, 1946. [Class 38 (iv)] Relates to circuits for controlling the frequency of an oscillator 1 by reference to a master oscillation 2, of the kind in which the oscillations are mixed in a device 3, the output of which reacts at 6 on the frequency of the oscillator; and comprises means for blocking the connection of the mixer 3 to the frequencyadjusting devices 6 when the master oscillation falls below a certain amplitude. The output circuit of the mixer comprises a high resistor 4 and large capacity 5 giving a time-constant of the order of 15 to 20 seconds, and the voltage across this combination is applied to the frequency regulator 6. Should the master oscillation fail, a relay 8 fed through a rectifier 7 from the source 2 allows its contact 9 to open, thus blocking the discharge path for the condenser 5 through the mixer 3 and holding the frequency of the oscillator 1 for some time at the value to which it was last corrected. The resistor 4 may be replaced by an inductive impedance. The master oscillation 2 may be a received wave in a superheterodyne radio receiver, and the controlled oscillator may be the local oscillator.
Patent GB-977170-A (GB)
Title: Digital information storage apparatus
Inventor: HOFFMAN GEORGE RICHARD
IPC: H05B44/00
Filed: 1961-09-05
Abstract: 977,170. Semipermanent stores. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 3,1962 [Sept. 5,1961], No. 31926/61. Heading G4A. A matrix of electro-luminescent elements is masked by a card 2, a hole in the card representing a binary arc. To interrogate a particular position of the matrix a row is pulsed at frequency f i  and a column at frequency f 2 . The element at the intersection of the row and column will emit light at the difference frequency f 3 , between f 1  and f 2 . The light is received at photo-multiplier 3 if the element is adjacent a hole in the card 2 and is converted to an electrical signal. At filters 4 and 5 the frequencies f 1  and f 2  are rejected and the difference frequency is amplified at circuit 6. At circuits 7 and 8 it is sampled and integrated to produce the data signal.
Patent GB-205725-A (GB)
Title: Improvements in materials for use in hardening iron or steel
IPC: C23C8/66
Filed: 1922-11-22
Abstract: 205,725. Carbonex, Ltd., and Rodwell, A. G. Nov. 22, 1922. Case-hardening.-For case-hardening iron and steel, fresh dung of herbivorous animals is fermented or is mixed with a diluent such as ground wood charcoal and an alkaline earth carbonate such as barium carbonate and fermented, until the mixture is dry and easily broken up and the product is mixed with a form of carbon such as ground charcoal. Alkali cyanides, ground coke, fresh dung, clay Kieselguhr or moulding sand, barium carbonate and graphite may be mixed with the product. When a paste is desired, the mixture may be mixed with a solution consisting of 2 parts by weight of water and 1 part of potassium carbonate.
Patent GB-1462368-A (GB)
Title: Flame tube assembly
IPC: F23R3/28
Filed: 1973-07-05
Abstract: 1462368 Gas turbine engine combustion equipment LUCAS INDUSTRIES Ltd 27 June 1974 [5 July 1973] 32091/73 Heading F1L A flame tube assembly for a gas turbine engine comprises a flame tube wall 10, a fuel sprayer head 13 which projects through an opening 11 in the flame tube wall, there being a clearance 14 between the sprayer head and the opening for flow of air from an air-flow passage outwardly of the flame tube to the interior of the flame tube. A shroud 17 is mounted on the exterior of the flame tube wall around the clearance 14, the shroud having air inlets 21, 22 which are disposed upstream of the clearance with respect to the air-flow through the passage. The shroud 17 is of U-shape comprising a pair of limbs 18, 19 and an intermediate portion 20, the limbs 18, 19 being open at their upstream ends 21, 22 for inflow of air, the limbs and intermediate portion being also cut away at 23, 24, 25 for outflow of air to the clearance space 14. Air also passes from the shroud through some of the openings 12 in the flame tube wall.
Patent GB-674196-A (GB)
Title: Improvements in or relating to radio frequency electrical oscillators
IPC: H03B5/10
Filed: 1949-12-14
Abstract: 674,196. Radio receiving circuits; frequency modulation. GENERAL ELECTRIC CO., Ltd., and FOOT, J. B. L. Dec. 8, 1950 [Dec. 14, 1949], No. 32102/49. Class 40 (v). [Also in Group XXXV] The tuned circuit of a radio-frequency oscillator is coupled to a circuit including a non- linear resistive element having an appreciable time-constant, and the frequency is varied by passing a variable current through the resistive element. The tuned circuit 2, 3 is maintained in oscillation by a valve 1 and is coupled inductively to a circuit comprising a coil 9, a condenser 8, and a non-linear resistance 7 such as a filament lamp. Variable control current, either direct or alternating, is passed through the lamp from terminals 10, 11 through choke coils 12, 13. The control current may be the anode current of a second valve to the grid of which a variable control voltage is applied. The system may be employed for remote control of the oscillator frequency. For automatic control of the oscillator frequency, the control voltage is derived from a frequency discriminator. According to the Provisional Specification, frequency modulation may be effected by a microphone supplying audio-current to a crystal rectifier and coupling coil. The coil is coupled to the tuned circuit of the oscillator, and both the frequency and the amplitude of the oscillator output vary in the rhythm of the audio current. Amplitude modulation may be removed by a limiter. The inductive coupling may be replaced by a capacity coupling.
Patent GB-698544-A (GB)
Title: Process for the preparation of a propane derivative
Inventor: SLACK RONALD
Filed: 1949-12-14
Abstract: A process for the preparation of 2-dichloracetamido - 1 - p - nitrophenyl - propane 1 : 3 - diol comprises treating a dichloromethyl oxazoline of 2-amino-1-p-nitrophenyl-propane 1 : 3-diol with dilute acid followed by neutralization of the reaction mixture with a base at a temperature not greater than 30 DEG  C.  The oxazoline, of formula <FORM:0698544/IV (b)/1> (where R represents a p-nitrophenyl group and R1 represents a hydroxymethyl group (isomer III) or R represents a hydrogen atom and R1 represents a p-nitrophenylhydroxymethyl group (isomer II), may be obtained, e.g. as in Specification 698,542, by reacting 2-amino-1-p-nitrophenyl-propane-1 : 3-diol with an iminoether of the type <FORM:0698544/IV (b)/2> where R2 represents the residue of an alcohol R2OH. Ammonia is preferred for effecting the neutralization. In example (1) DL-threo-2-dichloromethyl - 4 - p - nitrophenyl - hydroxy-methyl-D 2-oxazoline is prepared by reacting DL - threo 2 - amino 1 - p - nitrophenyl - pro - pane 1 : 3-diol with dichloracetimino-ethyl ether hydrochloride.  The oxazoline is dissolved with warming in dilute hydrochloric acid and the solution is cooled and neutralized with aqueous ammonia to give DL-threo 2-dichloracetamido - 1 - p - nitrophenyl - propane 1 : 3-diol. Similarly produced are the D-threo and DL erythro forms of the oxazoline and diols.  In example (3) D-threo 2-dichloromethyl-5-p-nitrophenyl-4-hydroxy-methyl-D 2 -oxazoline is separated by fractional crystallization from the product obtained by reacting D(-)-threo 2-amino - 1 - p - nitrophenyl - propane 1 : 3 - diol and dichloracetiminoethyl ether hydrochloride.  The oxazoline is dissolved with warming in hydrochloric acid, and the cooled mixture then neutralized with ammonia to give D-threo-2-dichloracetamido - 1 - p - nitrophenyl - propane 1 : 3-diol.  Similarly to (3) are prepared the corresponding DL-threo forms.  The second Provisional Specification refers to haloalkyl derivatives in general. Specification 698,543 also is referred to.
Patent GB-207042-A (GB)
Title: Improvements in conveyors and screens for coal or other minerals or materials
IPC: B65G27/00
Filed: 1922-11-24
Abstract: 207,042. Barker, W. H., and Berrisford, W. H. Nov. 24, 1922. Jigging conveyers. - A jigging shoot e for transferring material from a conveyer or screen to a wagon is supported by an arm a having a depending portion which is pivoted at b to the base structure of the shoot-actuating mechanism. The arm is adjusted by winding-mechanism attached to the chain f. The tracks g for the rollers h of the shoot are moved and may be adjustable along the arm. Specification 27662/12 is referred to.
Patent GB-799574-A (GB)
Title: Thermoplastic compositions of water-soluble cellulose ethers
IPC: C08K5/06
Filed: 1956-10-22
Abstract: A water-soluble thermoplastic composition comprises (1) 5-80 per cent by weight of a water-soluble alkyl cellulose, hydroxyalkyl cellulose or alkyl hydroxyalkyl cellulose in which the alkyl group contains 1-3 carbon atoms and the hydroxyalkyl group contains 2 or 3 carbon atoms; and (2) 95-20 per cent by weight of a monoalkyl ether of ethylene glycol, diethylene glycol, or propylene glycol, the alkyl group containing 1-3 carbon atoms. Specified cellulose ethers are methyl, hydroxyethyl, hydroxypropyl, and methyl hydroxypropyl ethers; specified monoalkyl glycol ethers are propylene glycol monomethyl ether, propylene glycol monoisopropyl ether, propylene glycol monoethyl, ethylene glycol monoethyl ester, and the monoisopropyl ether of diethylene glycol.  Examples are given.  Specifications 703,962 and 796,308 are referred to.
Patent GB-190350-A (GB)
Title: Improvements in boots and shoes
IPC: A44B19/30
Filed: 1921-12-01
Abstract: 190,350. Lomas, H. Dec. 1, 1921. Sliding - clasp fastenings.-A fastening device for boots of the known type with interlocking parts a, a applied directly to the uppers and closed by a sliding clasp B is characterized by a hook b<1> on the clasp B to engage the top of the boot and maintain the clasp in position. Specifications 14358/12, 12261/15, 114,629, 133,729, 135,230, and 136,199, are referred to.
Patent GB-877812-A (GB)
Title: Improvements in or relating to automatic sewing machines
IPC: D05B29/06
Filed: 1958-10-09
Abstract: 877,812. Sewing machines. PFAFF A. G. G. M. Oct. 9, 1958 [Oct. 14, 1957], No. 32209/58 Class 112 Control apparatus for a plurality of automatic sewing machines comprises a presser foot lifting relay and starting relay for each machine, and the arrangement is such that, on starting a first machine, the starting relay associated therewith operates a time switch associated with another machine, whereby the latter is started after an interval of time. An automatic sewing machine A is provided with a relay 1 which is normally energized, for raising the presser foot, from D.C. mains 7, 8 via a closed switch 4 and the closed contacts 10 of a double pole foot-operated starting switch 3. When the latter is operated to open contacts 10 and to close contacts 13, relay 1 is de-energized to lower the presser foot and to close a switch 6, whereby a machine-starting relay 2 is energized. The machine then operates, when a cam 5 opens switch 4 to prevent inadvertent raising of the presser foot. Energization of relay 2 closes a switch 15 to energize a time switch 62 from A.C. mains via a closed switch 67. Initial energization of switch 62 causes closing of a switch 70 to maintain switch 62 energized when switch 15 opens. On expiration of this time interval set for switch 62, a switch 61 is moved from a contact 60 to a contact 73, whereby a presser foot lifting relay 51 is de-energized to lower the presser foot of an automatic sewing machine B and to close a switch 56, while a relay 52 is energized to start machine B, when a cam 55 opens a switch 54 in the circuit of relay 51. Energization of relay 52 also opens switch 67 to de-energize a time switch 62, and also closes a switch 74 to energize a time switch associated with a further automatic sewing machine, whereby the latter starts after the expiration of the time interval. The arrangement enables the operator, after loading and starting machine A, to load machine B and subsequent machines without having to start any of the latter. A switch 76 is provided in parallel with switch 61 to prevent, if desired, the starting of the machine B on the expiration of the time interval set for switch 62.
Patent GB-245127-A (GB)
Title: Improvements in or relating to filter diaphragms for electrolytic purposes
IPC: C25B13/06
Filed: 1925-12-21
Abstract: 245,127. Billiter, J., and Siemens &, Halske Akt.-Ges. Dec. 23, 1924, [Convention date]. Diaphragms are made by introducing calcium fluoride or talc into the interstices of an asbestos fabric or like foundation. The material may be introduced from both sides or from one side only, this side, in the case of an horizontal diaphragm, facing the cathode. The material may be introduced by dusting or rubbing or by infiltration from a liquid suspension. Common salt may also be added to increase the porosity. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also the use of quartz, asbestos, or meerschaum powders, and of magnesium compounds or silicic acid as filling materials, and further comprises the use of a diaphragm to which a filling material is superficially connected by means of a non-setting binder. This subjectmatter does not appear in the Specification as accepted.
Patent GB-761836-A (GB)
Title: Improvements in star projectors
IPC: G09B27/04
Filed: 1954-11-08
Abstract: 761,836. Educational appliances. LIVERSIDGE, T. K. Nov. 8, 1954 [April 15, 1954], No. 32262/54. Class 146(2). A celestial sphere having star patterns 50 thereon for projection of light therethrough, is rotatably mounted on a post 26 pivotally mounted at 25 on a domed base 20. An internal directional light source 43 is mounted in a gravity directed socket 38 to throw light on to one half of the sphere according to the position in which the post 26 is fixed in a quadrant-shaped slot 24 in the moulded plastic base 20. The post and sphere are retained in adjusted position by frictional engagement of a rubber washer 33 which engages the outer face of the base 20 on both sides of the slot 24. The washer 33 is urged to grip the base by a spring 34, which at its other end, urges a washer 31 to clamp the sphere against a sleeve 29 of post 26. The sphere is formed of synthetic plastic material in two half-sections 30a, 30b held together by a resilient ring 36. The sphere is opaque, the light, adjustable by means of rheostat in the base, shining out only through the star patterns 50 on to the walls of a darkened room.
Patent GB-986728-A (GB)
Title: Absorption refrigeration apparatus
IPC: F25B15/06
Filed: 1963-08-15
Abstract: 986,728. Refrigerating. WORTHINGTON CORPORATION. Aug. 15, 1963 [Oct. 10, 1962], No. 32268/63. Drawings to Specification. Heading F4H. The Specification describes the same absorption system as that described in Specification 985,958, but the claims differ.
Patent GB-1451407-A (GB)
Title: Cable drums
IPC: H02G1/10
Filed: 1974-07-20
Abstract: 1451407 Supporting cable-drums MACKLEY ACE Ltd 4 April 1975 [20 July 1974] 32268/74 Heading B8M [Also in Divisions B7 and D1] A cable drum 1 for unwinding cables 10 from the drum 1 and also for laying the cables when the drums are used on a marine vessel, and has a central bore 6 extending from one end of the drum 1 to the other, and is provided with a removable flexible annular skirt 5 disposed around the periphery of what, in use, is the bottom of the drum 1 to define a fluid cushion space 4 whereby pressurized fluid is passed into the space 4 either by way of the central bore 6 or from beneath the cushion space 4 to support the drum 1. As shown, seven cable drums 1 are disposed on the deck 2 of a cable-laying barge 3 which is towed and positioned by a tug (not shown) using towing bridle 7. Water screwunits 8 are used to manoeuvre the barge 3 and can be used to assist propulsion of the barge 3. The barge is also provided with a cable-winch 9 for initial unreeling of the cable 10, and a gantry 15 having a rotatable sheave 16 which follows vertical travel of the cable 10 by adjusting vertically movable block and tackle (17) Fig. 1 (not shown). A portable water-pump 13 supplies "pressurized water" to the space 4 via a duct 18 and through an inlet 18a penetrating the deck 2 from beneath to communicate with the cushion space 4, and draws in sea-water through a hose 19. A spindle 20 penetrates the drum 1 and allows its rotation in use. Each "used" drum is removed from the gantry 15 and a fresh drum is brought in its place. In a modification Fig. 4 (not shown) the drums 1 are allowed to remain in place on the deck 2 by providing a portable gantry and seven branches forming inlets 18a. In a further modification Fig. 5 (not shown) a hollow spindle (20a) is provided which includes perforated outlet holes (37) whereby pressurized fluid can be introduced into the cushion space 4.