baber/WOPTO huggingface dataset:
Patent GB-603227-A (GB)
Title: Improvements in or relating to warp knitting machines
IPC: D04B35/12
Filed: 1944-11-22
Abstract: 603,227. Knitting-machines. LAMBACH. F. Nov. 22, 1944, No. 23252. Convention date, Dec. 17, 1943. [Class 74(ii)] [Also in Groups XIX and XXXV] Means for automatically controlling the operation of a warp knitting-machine comprise an electric switch 874, Fig. 13, having an element 876 responsive to the number of revolutions of the main shaft and carrying spaced contact plates 880, 882, and element 800 responsive to the length of fabric being produced and carrying a contact number 802, an adjustable take-up device including a take-up roller 44 driven from the main shaft and an adjustably-mounted tension roller 46, and a reversible electric motor 302 in circuit with the electric switch and operatively associated with the take-up. device, the arrangement being such that when there is any deviation from a predetermined relationship between the length of fabric being produced and the number of revolutions of the main shaft, the switch closes whereby the electric motor is energised to adjust the position of the tension roller 46 and thus the speed of the take-up roller 44, to restore the predetermined relationship. Either or both of the drives for the elements 800, 876, may comprise a change gear to enable these elements to be rotated at the same speed. Similar means, Figs. 12 and 17 (not shown), are provided for maintaining a predetermined relationship between the length of warp yarn drawn from a warp beam and the number of revolutions of the main shaft, the arrangement in this case being such that when there is a deviation from the predetermined relationship, the beam brake, or an arm carrying the tension rod is automatically adjusted, 'to restore the predetermined relationship. In a modification, Fig. 15 (not shown), the arms carrying the tension rod are adjusted simultaneously by means of a single switch and reversible electric motor. The automatic controlling means may be supplemented by means for indicating the length of fabric being produced, comprising a measuring roller 574, Fig. 4, in contact with the fabric 42, the movement of the roller 574 being transmitted to a counter 572 and associated pointer 134 by means of gears including a change gear 120. Similar means may be provided for indicating the number of revolutions of the main shaft and the length of warp yarn drawn from each of the warp beams: In a modification, Fig. 8, the various indicating means are arranged at a single station, and each counter and associated pointer is driven by an electric motor through a gear transmission including a change gear, each motor being in circuit with a further motor arranged near each of the warp beams 26, 28, near the fabric 42 being produced, and near the main shaft 22. The pointers may have connected thereto sound or light signals which are actuated when there is a deviation from a predetermined relationship.
Patent GB-708663-A (GB)
Title: Manufacture of new trisazo dyestuffs
IPC: C09B31/20
Filed: 1951-10-05
Abstract: The invention comprises trisazo dyestuffs of the formula <FORM:0708663/IV(c)/1> where R1 and R2 are residues of middle component of the benzene series and R3 is the residue of a benzene-o-hydroxycarboxylic acid; the attachments shown to the ring I are m- or p-.  These are made by coupling diazotized 2-naphthylamine-4:8-disulphonic acid with HR1 NH2, re-diazotizing, coupling with HR2 NH2, condensing the product with m- or p-nitrobenzoyl chloride, reducing the nitro group to amino, diazotizing and coupling with salicylic acid or a substitution derivative thereof.  The last coupling may be effected in the presence of pyridine.  Preferably no carboxylic acid group is present other than that in R3.  The products are suitable for dyeing and printing wool, silk, leather, cotton, linen and regenerated cellulose.  They can be metallized (especially coppered) in the dyebath or on the fibre, e.g. by the process of Specifications 455,274 or 619,969.  In examples, (1) the dyestuff 2 - naphthylamine - 4 : 8 - disulphonic acid --> m - toluidine --> m-toluidine (p-nitrobenzoylated and reduced) is diazotized and coupled with salicylic acid; (2) as in (1) using cresidine as first coupling component; (3) cotton is dyed with the product of (2) and coppered. Other suitable components are listed.
Patent GB-316563-A (GB)
Title: Improvements in or relating to the production of diazo-type prints
IPC: G03C1/61
Filed: 1929-07-30
Abstract: 316,563. Kalle & Co. Akt-Ges. July 30, 1928, [Convention date]. Stable diazo compounds. - The resistance to water of diazotypes, particularly those prepared from dyestuffs containing a sulpho- or carboxyl group, is increased by the addition of an aryl biguanidine to the carrier for the light sensitive layer or to the layer itself. Examples are given of the addition of (1) phenylbiguanidine to a layer containing diazo - dimethylamino-4-amino-3-benzoic acid, phloroglucine, boric and tartaric acids; (2) 2-naphthylbiguanidine or 4-aminophenyl-1- phenylbiguanidine to a mixture of diazo-1-diethylamino-4-amino-3-benzene-sulphonic acid, phloroglucine and resorcin ; (3) 3-chloro-2.tolyl-biguanidine, boric and tartaric acids to a mixture of diazo - 1 - dimethylamine-4-amino-3-benzene sulphonic acid, phloroglucine and resorcin. (4) diphenyl-p :p<1>-dibiguanidine to a mixture of diazo- 1 - dimethylamino-4-amino - 3 - benzenesulphonic acid, aluminium sulphate, boric and tartaric acids, and phloroglucine.
Patent GB-663767-A (GB)
Title: Improvements in or relating to electrical control circuits
IPC: H01H47/00
Filed: 1948-09-06
Abstract: 663,767. Controlling switching by transformers. WILLIAMS & SONS, Ltd., S., and DURSTON, D. S. Aug. 24, 1949 [Sept. 6,1948], No. 23439/48. Class 38 (iv). A relay e is actuated upon energization of a transformer c, but only if the primary windings of one or more transformers a, b, having secondary windings connected in opposition to that of transformer c, are de-energized. The relay may be in the weighing circuit of a weighing grabbing crane, the transformer c being energized when the electrical portions of the weighing gear is alive and the transformers a, b energized when the crane is hoisting or luffing. Specification 663,766, [Group XVIII], is referred to.
Patent GB-750180-A (GB)
Title: Improvements in and relating to tool ejecting devices for machine tools
IPC: B23B23/00
Filed: 1953-08-25
Abstract: 750,180. Sockets. VERWALTUNGSGES. DER WERKZEUGMASCHINENFABRIK OERLIKON. Aug. 25, 1953 [Sept. 24, 1952], No. 23463/53. Class 83 (3). A hydraulically-operated device for ejecting a tool 18 from a socket in a tool-holder 2, e.g. in a lathe tailstock, comprises an ejector pin 14 having one end adjacent the tool and the other end abutting a piston 8 in a liquid-filled chamber F into which projects a piston 9 of smaller diameter than piston 8, whereby movement of piston 9 into the chamber causes movement of piston 8, to eject the tool with increased force. The holder 2 containing the device is attached to a piston 4 movable throughout a stroke, limited by ports A, B, by hydraulic pressure controlled by valves 16, 17, and piston 9 has a bore 10 which ensures chamber F being always filled. When the tool is to be ejected, valve 16 is actuated to connect ports B, C to exhaust and permit piston 4 to travel beyond ports B, whereby piston 9 abuts stop 11 and bore 10 is closed by projection 12, and continued movement of piston 4 causes piston 9 to move into chamber F.
Patent GB-1002424-A (GB)
Title: Process for the purification of lactams
IPC: C07D201/16
Filed: 1962-06-19
Abstract: Lactams are purified by treatment in the presence of basic reacting substances with nascent hydrogen formed in situ or with molecular hydrogen in the presence of a hydrogenation catalyst under such conditions that the lactam is substantially unattached. Basic substances include inorganic bases, suitably alkali oxides, hydroxides, carbonates and bicarbonates, e.g. sodium and potassium hydroxides, sodium oxide, carbonate and bicarbonate; alkali salts of fatty acids with 1-4 carbon atoms, e.g. sodium acetate; alkaline earth hydroxides, oxides and carbonates, e.g. barium hydroxide, calcium oxide, hydroxide and carbonate; ammonia and mono-, di- and tri-alkylamines, with 1-4 carbon atoms, e.g. triethylamine. Where necessary, the reagents may be dissolved in an inert solvent such as water, alkanols with 1-4 carbon atoms, cyclo-alkanols with 5-8 carbon atoms and a mixture of water with, for example, water-miscible open chain or cyclic ethers.  Nascent hydrogen may be prepared by reaction between Raney alloys and alkaline solutions; hydrazine and Raney metals and alloys, palladium and platinum; sodium or sodium amalgam and water or lower molecular weight alcohols and between zinc dust and caustic soda.  Catalysts which may be used with molecular hydrogen include palladium, platinum, nickel, ruthenium and noble metal oxides such as palladium or platinum oxides which may be supported on carriers.  Examples describe the purification of caprolactam, caprylolactam and o -laurolactam.  Specifications 778,751 and 904,302 are referred to.
Patent GB-480446-A (GB)
Title: Improvements in or relating to spring upholstery
IPC: A47C7/35
Filed: 1936-08-27
Abstract: 480,446. Spring upholstery. FORSTER, R. E. Aug. 27, 1936, No. 23503. [Class 52 (iv)] A foundation member for supporting padding or upholstery springs consists of an assembly of shallow springs b interconnected at their upper and lower ends, the coils of the peripheral springs being connected to a rigid frame a producing a crowned effect. The frame a is suspended by tension springs e from the seat frame d.
Patent GB-695767-A (GB)
Title: Automatic tuning systems for radio receivers
IPC: H03J7/30
Filed: 1951-10-10
Abstract: 695,767. Electric control systems. BENDIX AVIATION CORPORATION. Oct. 10, 1951 [Oct. 31, 1950], No. 23635/51. Class 40 (i) [Also in Group XL(c)] In an automatic tuning system for the tank circuit of a crystal oscillator of a radio receiver, the selection of a new crystal causes the tuning to be moved first to a reference position (e.g. the end of the range), then by means sensitive to resonance of the tank circuit to and beyond the desired position and finally back at slow speed to the desired position. In the circuit shown the switching in of the local oscillator crystal for a new channel causes the anode tuning capacitor 28 which is ganged to the remaining receiver tuning capacitors to be adjusted for maximum local oscillator output. Thus when the switch 12, 13 is moved from crystal A to crystal B contact 88 is momentarily earthed causing relay 43 to be operated via cam contact 45. The relay is held operated by its contact 69 which also earths the lower winding of a motor supply transformer 81 causing the motor 21 to rotate the tuning capacitor. When the latter reaches its "fully in" position a cam 29 breaks a contact 45 releasing relay 43 breaking the motor circuit, and makes a contact 40 operating a relay 38. This relay is held by its contact 57 and its contact 58 operates a relay 47. Contact 57 also completes the upper secondary circuit of the motor 81 transformer causing the tuning to move in the opposite direction. Relay 47 breaks the short circuit contacts 62, 63 of the control circuit 16 so that as the tuning approaches the correct value the output of the rectifiers 17 increases to a maximum. Movement of the tuning beyond this point permits the voltage across one rectifier load to decrease because it has a short-time constant. Accordingly the valves 19, 20 become unbalanced and a relay 18 operates. Contact 61 of this relay breaks the circuit of relays 38 and 47 stopping the motor but relay 47 is held by a time delay circuit 94, 95. Contact 35 of relay 18 earths the lower secondary of the motor transformer through a resistor 77 causing the tuning to return slowly to the maximum output position. When this is reached the rectified inputs to valves 19 and 20 again equal and relay 18 releases stopping the motor. Relay 47 then releases after its time delay and again disables the control circuit. A clutch and brake arrangement are provided for the motor and a cam 'contact 30 causes the tuning cycle to repeat if the tuning should reach the upper limit without stopping.
Patent GB-308944-A (GB)
Title: Water distributing device for irrigation purposes
IPC: B05B3/02
Filed: 1928-08-17
Abstract: 308,944. Lukacsovics, J. Aug. 17, 1928. Spreading liquids.-Apparatus for spraying or distributing water over large surfaces comprises a standpipe adapted to be set in rapid rotation and provided at its upper end with one or more peripheral nozzles closed by valves when stationary, and opened by centrifugal force on rotation, the water being ejected by centrifugal force in the form of jets and fresh quantities being continuously drawn up the standpipe by suction produced by the centrifugal action. The standpipe 1 rotates in bearings 8, 9, 10 and the valves 5 of its nozzles 4 are controlled by springs 5<a>. The standpipe is provided with a valve 2 at the bottom and a closing screw 3 and funnel 31 at the top to allow of its being filled with water before being rotated. It is connected directly with a supply of water 32, or indirectly through a hose. It is rotated by means of a crank handle 12, spur gearing 13, 14, friction discs 15, 16, and pinions 6, 7. In order continuously to vary the speed of rotation and the range of the jets the disc 16 is moved to and fro radially of the disc 15 by movement of its shaft 17 by a bearing head 19 and a connecting-rod 20, which is pivoted eccentrically on a worm wheel 21 driven by a worm 22 on the crank spindle. The shaft 17 passes through a removable guide arm 23, and the disc 15 is pressed against the disc 16 by an adjustable spring 27. The disc 16 is provided with a friction ring 26 of rubber or leather. The standpipe may be driven by a motor. Instead of the screw 3 and funnel 31 a spring-controlled valve may be provided to allow of the standpipe being filled initially by means of a hand suction pump.
Patent GB-759035-A (GB)
Title: Improvements in or relating to the cooling of the atmosphere in coal and other mines
Inventor: WHITAKER ALFRED
IPC: E21F3/00
Filed: 1953-08-27
Abstract: 759,035. Mines. COAL INDUSTRY (PATENTS), Ltd. Nov. 26, 1954 [Aug. 27, 1953], No. 23703/53. Class 85 [Also in Group XXVIII] A combined system for cooling mine workings and conveying solid material therefrom comprises a pump 15 which delivers liquid through a cooler 19 connected to a refrigerating unit 20 to a lagged input pipe 29 in which is a heat exchanger 33 through which air in the mine working is blown by a fan 32. The liquid then passes to a feeder device 36 inwhich the solid material is introduced into the liquid and raised through the output pipe 37 to the separator 24.
Patent GB-210810-A (GB)
Title: Improved cheese cutter
IPC: B26D1/547
Filed: 1922-12-22
Abstract: 210,810. Dean, J. H. Dec. 22, 1922. Cheese cutters.-A machine for cutting cheese comprises a rigid frame k pivoted in bearings d in a metal base c. The latter is provided with a slot e for the cutting wire a, which may be tensoned by an adjustable member b. The frame k is extended to form an operating handle f. Reference has been directed by the Comptroller to Specification 25105/12.
Patent GB-920723-A (GB)
Title: Amplifier circuit
Inventor: MARCHANT JOHN JAMES
IPC: H03G1/00
Filed: 1960-07-07
Abstract: 920,723. Automatic volume control. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 19, 1961 [July 7, 1960], No. 23796/60. Class 40 (4). In an amplifier comprising a transistor with. impedances in its emitter and collector paths, the collector path impedance is varied in accordance with the magnitude of a control signal so as to vary the gain of the amplifier. It is stated that the gain of such a transistor amplifier is equal to the ratio of the collector and emitter impedances so that alteration of either will alter the amplifier's gain. In Fig. 2, the collector circuit impedance of transistor T comprises transformer TR and transistor T2 connected as shown, so that application of a control voltage Vc to the base of T2 will cause the emitter-base current to change hence changing the emitterbase impedance and consequently the collector circuit impedance of T, with a resultant change of the amplifier gain. Alternatively the control voltage Vc may be applied across a semiconductor diode D (Fig. 3) so as to bias the latter in its conducting direction. Variation of Vc alters the impedance of D and hence the effective impedance in the collector circuit and hence the gain of transistor T.
Patent GB-650015-A (GB)
Title: Improvements in or relating to modulators for carrier telegraph systems
Inventor: TERRY VICTOR JOHN
IPC: H04L27/20
Filed: 1948-09-10
Abstract: 650,015. Keying carrier frequencies. STANDARD TELEPHONES & CABLES, Ltd. Sept. 10, 1948, No. 23835. [Class 40 (v)] In carrier telegraphy distortion due to the alternations of direct current between a positive and a negative value transmitted over a long line not occurring suddenly but taking place relatively slowly (with however an unchanged interval between the instants the currents pass through zero) is avoided by using a balanced modulator producing carriers of opposite phase but equal amplitude A/2 for positive and negative keying signals applied at 7, 8 deriving from the carrier source 2, 3 an auxiliary wave also of the same amplitude A/2, and combining the output of the phase modulator with the auxiliary wave so that the final output amplitude at 9, 10 varies between A and zero. As shown, the signals are applied across the centre-taps of secondary windings 13, 14 of a carrier input transformer 11 connected in series aiding combination to rectifier bridges 16, 17. Three equal resistances forming a balanced network connect the rectifiers to an output 22. Similar resistances 25, 26, 27 connect this output with the auxiliary wave which is derived from the input transformer 11 through an attenuator 5.
Patent GB-416745-A (GB)
Title: Improvements in or relating to moisture-resisting wrappers for commodities
IPC: D21H17/67
Filed: 1933-08-28
Abstract: 416,745. Wrapping-materials. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(Nashua Gummed & Coated Paper Co. ; 44, Franklin Street, Nashua, New Hampshire, U.S.A.) Aug. 28, 1933, No. 23855. Drawings to Specification. [Class 94 (ii).] A moisture-resisting opaque waxed wrapper comprises paper coated with a finely divided pigment having a refractive index different from that of the paper or wax. Alternatively the pigment may be incorporated in the paper during manufacture by adding it to the paper stock. Suitable pigments include titanium oxide alone or mixed with barium sulphate or calcium carbonate, or zinc oxide, and may be applied in vehicles such as casein size. After drying and printing on the coated face the paper may then be immersed in molten paraffin, so that the paper is both impregnated and coated on both sides with wax.
Patent GB-426538-A (GB)
Title: Improved method of decorating wood surfaces
IPC: B44C1/10
Filed: 1934-08-18
Abstract: 426,538. Ornamenting wood. KAUFMANN, H., 6, Gutenbergstrasse, Frankfort-on- Main, Germany. Aug. 18, 1934, No. 23865. Convention date, Aug. 19, 1933. [Class 93] Wood surfaces are decorated with pictures, designs, and like representations by heating the wood, preferably above 80‹ C., applying directly thereafter a foil of cellulose derivative to which the representation has been applied, preferably by printing, and affixing the foil to the surface of the wood by heat and pressure. A hard wood with small pores is preferably used, the surface being smoothed and brushed before drying.
Patent GB-1351472-A (GB)
Title: Electrical apparatus for measuring compensated temperature variations
IPC: G01N25/48
Filed: 1971-04-19
Abstract: 1351472 Measuring temperature electrically VASIPARI KUTATO INTEZET 19 April 1971 [13 March 1970] 23943/71 Heading G1N In an arrangement in which the temperature of a process is measured by a resistor sensor 1 which is connected in a bridge circuit 12 having an indicator 2, the measurement is compensated for temperature changes brought about by other processes by (1) auxiliary circuits 3 and 4 which supply to the indicator compensating currents of adjustable polarity and magnitude and (2) further auxiliary circuit including a motor-driven resistor 5, 6 which supplies a current of adjustable polarity which varies in magnitude at a predetermined rate. The arrangement has application to a chemical process where the quantity of material involved in a reaction is determined from the heat of the reaction. Circuits 3 and 4 are used to compensate for heat produced by ancillary chemical reactions which take place with the reaction being measured. The circuit including motor-driven resistor 5, 6 is used to compensate for heat varying with time such as heating or cooling due to ambient conditions.
Patent GB-197600-A (GB)
Title: Improvements in and relating to steam superheaters
IPC: F22G7/06
Filed: 1922-09-04
Abstract: 197,600. Mills, C. H., English, W. E., and Hannan, J. R. Sept. 4, 1922. Smoke-tube superheaters.-In a header a. divided by a partition d into a saturated steam compartment b and a superheated steam chamber c, the ends of the inlet tubes h, j, k communicate with the compartment b by means of tubes o, p. q which are passed through clearance holes in the outer walls of the header and screwed into the partition d and afterwards separated into the clearance holes to make tight joints. The outlet tubes of the elements are shown at l, m, n. In a modification, the tubes are coupled to the underside of the header, which is turned through 90‹ relatively to the position shown in Fig. 3.
Patent GB-754400-A (GB)
Title: Machine for soil milling, gathering stones or lifting, cleaning, and loading edible roots
IPC: A01D33/08
Filed: 1954-08-18
Abstract: 754,400. Sifting and separating apparatus. CHRISTENSEN, P. Aug. 18, 1954 [April 28, 1954], No. 23988/54. Class 117. [Also in Group I] Sifting and separating means for a root-crop harvester (see Group I) comprise a series of driven parallel shafts 10 carrying rotary cleaning members 11 mounted in staggered interleaving relation. The cleaning members may comprise brushes or may consist of bars or discs of various shapes covered with rubber. A part of each rod or disc may be pivoted to the remainder so as to yield to stones. A gearbox 12, driven from the towing tractor, drives the shafts 10 through a belt-drive 20. A shield covers the cleaning members and a perforated pipe 18 directs an air-blast behind the rearmost members to remove loose leaves and haulms, the cleaned crop being delivered to the elevator 17.