baber/WOPTO huggingface dataset:
Patent GB-330764-A (GB)
Title: Improved manufacture of metal pipes or like castings
IPC: B22C15/12
Filed: 1929-06-07
Abstract: 330,764. Moussiaux, E. June 7, 1929. Plants; flasks. - Moulding-boxes for casting pipes &c. are formed with flanged wheels and are allowed to roll on inclined rails 7a, 7b, Fig. 4, from the moulding shop 6 to the foundry. The moulds are placed on the rails in the position for casting and the distance traversed is a multiple of the periphery of a wheel, so that the moulds come to rest against stops 9a, 9b in the position for casting. The moulding-boxes may be of hexagonal form, as shown in Fig. 1, and a half 3<a> of each wheel may be formed on each half of a box. The boxes may have longitudinal strengthening ribs 2<c> and internal flanges 2d for preventing displacement of the sand.
Patent GB-613239-A (GB)
Title: Feeler for examination or treatment of solid bodies by pressure waves
IPC: G10K11/02
Filed: 1946-06-12
Abstract: 613,239. Testing materials by ultrasonic vibrations. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. June 12, 1946, No. 17603. Convention date, Aug. 13, 1945. [Class 118 (ii)] [Also in Group XXXIX] In the examination or treatment of a material or solid body by sonic or ultrasonic waves, a feeler device incorporating a piezoelectric quartz crystal 1, for example, for transmitting or receiving sound waves, includes a container 4 for a liquid 3, the opposite end of the container being closed by an indiarubber or other flexible diaphragm 2 which is normally distended outwardly of the container by the pressure of the liquid so that it will fit snugly against the material or body to be examined. The solid body may be moistened before examination, or the'diaphragm 2 may be porous to allow the liquid 3 to seep through. Automatic means for replenishing the liquid escaping from the device may be provided. Means may also be provided for varying the pressure of the liquid inside the container 4.
Patent GB-624341-A (GB)
Title: Electric circuits for transmission of frequency or phase modulated waves
IPC: H03C3/04
Filed: 1947-07-04
Abstract: 624,341. Frequency and phase modulation. WESTERN ELECTRIC CO., Inc. July 4, 1947, No. 17684. Convention date, March 31, 1939. [Classes 40 (v) and 40 (vi)] Amplitude modulation in a carrier wave modulated in frequency or phase is reduced or annulled by applying the wave to a valve which is biassed to produce anode rectification, and by providing negative feedback from the anode circuit or the load circuit to the grid. In Fig. 1, the wave is generated in the tuned circuit 2, 3 which is back-coupled to the generating valve 1. The cathode lead includes a resistor 7 providing cathode bias sufficient to cause anode rectification, and an inductor 8 providing negative feedback at modulation frequency, both being shunted by a radio-frequency byepass condenser 9. Any amplitude modulation on the carrier is detected in the plate circuit as a voltage across the inductor 8 and is fed back in negative sense to the grid. Frequency modulation is effected by applying the signal from the microphone 30 in push-pull to the control grids of a pair of thermionic reactance valves 15, 16 connected across the tuned circuit 2, 3. Voltages in phase quadrature with the anode voltages are applied from one side of the tuned circuit 2, 3 to the grids of the valves 15, 16 through a phasing network comprising series inductor 20, variable shunt capacitors 21, 22 and resistor 19. In a modified circuit, Fig. 4, the inductor and capacitor of the tuned circuit are each divided and resistors 41, 42 interposed, the latter being effectively connected in a series circuit including blocking condensers between the cathodes and grids of the reactance valves 15, 16 in order to excite these grids in accurate phase quadrature. In a further modification (Fig. 3, not shown), the inductor 8 in the cathode lead of the oscillator valve 1 is omitted, and negative feedback is afforded by radiating the carrier wave, receiving and rectifying the radiated wave, and applying the detected signal in opposed phase in the grid circuit of the valve 1. Fig. 5 shows a source of frequency-modulated waves 51 connected in the grid circuit of a valve 50 which is biassed by resistance 54 in the cathode lead or by other means to give anode rectification, and is also provided in the cathode lead with an inductor 53 for providing negative feedback. Amplitude modulation present in the F.M. wave is reduced in the output circuit 52. Specification 515,940 is referred to.
Patent GB-176861-A (GB)
Abstract: 176,861. Doman, L. B., and Amphion Piano Player Co. Dec. 7, 1920. Blowing and exhausting air; tracker-bars; winding-mechanism. - An automatic tensionregulating device to which air can be admitted so as to vary the expression is connected to the atmosphere through a tapered valve actuated in opposite directions by bellows under tune-sheet control. The chamber of the regulating-pneumatic is connected to the low-tension side of the windway through a restricted aperture. Communication with the atmosphere may also be made through ports of different sizes controlled directly by the tune-sheet or by valves operated by pneumatics controlled by the tune-sheet. To enable the tension-regulating valve to be completely closed, as required in rewinding the sheet, a valve-controlled communication between the main exhaust and the regulating-pneumatic is provided. The tension-regulating valve 7 is actuated by a diaphragm 6 whose chamber 5 is connected through a restricted passage 12<1> to that side of the valve which leads to the action, and is adjusted to respond to the lowest operating tension by admitting air at 13 through the adjustable valve 14. To attain gradation of the expression depending on the lengths and series arrangement of perforations in the tune-sheet, the tapered valve 34 admits more or less air through piping 39, 11, being moved in opposite directions respectively by bellows 31, 31<1> operated by valves 25 and pneumatics 26 from ducts 29 in the tracker-bar. For accenting purposes, a number of air-admitting ducts 42 of different sizes may be opened by valves 43 operated by diaphragms 48 from the tune-sheet. Or ducts of either the same or different sizes in the trackerbar may be directly connected to the pipe 11 and uncovered by the tune-sheet, the tune-sheet perforations in the former case being of different sizes. To close the valve 7 entirely for rewinding, a pneumatic 60 is operated either by opening a vent 62 or automatically, thus raising a valve 59 and putting the chamber 5 into communication with main suchion through passages 58, 54, 57. The restricted passage 12<1> is at the same time automatically cleaned by reversal of the flow of air therethrough.
Patent GB-429069-A (GB)
Title: A chronological device
IPC: G04B19/22
Filed: 1934-06-14
Abstract: 429,069. Geographical clocks. WILLIS, J. H., Southwell Lodge, Ipswich Road, Norwich. June 14, 1934, No. 17696. [Class 139] In an improvement of the invention described in Specification 317,289, [Class 106 (i)], according to which an hour-graduated disc 8 is rotatably mounted on a chart 1 bearing radiating lines of " meridian " and the names of the localities traversed by them, the disc 8 is rotated by clockwork mechanism once in 24 hours and a supplementary hand or hands, for example, a hand 10 is driven through gearing therefrom to indicate minutes or other smaller time divisions on a dial 11, secured to or forming part of the chart. The disc 8 may have a dark half to denote night time, an arc 12 extending over the usual broadcast period, an indication " noon " and an asterisk to indicate midnight. The chart has the various continental areas and seas distinguished by shading and degrees of longitude may be marked around its periphery. Some of the meridians corresponding to particular localities may be differentially marked and to take account of " Summer " time the names of localities may be repeated on the other meridian corresponding to this time.
Patent GB-897629-A (GB)
Title: Improvements in or relating to hand tool holders
IPC: B25B23/18
Filed: 1959-05-25
Abstract: 897,629. Hand-tool handles. RAND, S. D. Nov. 30, 1959 [May 25, 1959], No. 17696/59. Class 61 [Also in Group XI] A portion 29 of a tool holder 30 is embedded in the detachable, transparent closure 20 for the extremity of an electric battery torch casing 10 from which closure the holder projects to receive the tool, the external surface of the closure being shaped as a lens to direct light from the bulb 18 along the tool towards the work. The tubular end 31 of the socket has longitudinally slotted walls, one diametrically opposed pair of slots being wider than the other pair to receive keys 32 on tool shanks 33, the tool being held by a screwed sleeve 35 which co-operates with external screw threads 34 on the slotted walls. The closure 20 has a tubular end 19 which is a sliding fit in the casing 10, the extent to which it reaches into the casing being determined by a flange 21. The other face of the flange provides an abutment which is engaged by an inturned flange on a securing ring.
Patent GB-374289-A (GB)
Title: Improvements in controllers for electric motors
IPC: H02P23/00
Filed: 1931-06-19
Abstract: 374,289. Master control of A.C. motors. LOCKETT, R. G., Wauwatosa, Wisconsin, U.S.A. June 19, 1931, No. 17862. Convention date, June 21, 1930. [Class 38 (iii).] Non-regenerative braking.-A motor M driving a tyre-making machine is controlled by pushbuttons 3, 4 for forward and reverse continuous running and by inching treadles 10, 11. The motor is stopped by plugging under the control of friction switches 5, 6 operated according to the direction of rotation. Depression of treadle 10 energizes the coil of switch 1 over contacts 10a thus causing motor to run forwards and close contacts 5a to energize a relay 12 over contacts 10b. Contacts 12d maintain energization of relay 12 irrespective of contacts 10b. Release of treadle 10 opens the coil circuit of switch 1 but completes a circuit through coil of switch 2 over contacts 10c. Switch 2 remains closed to effect plugging, until contacts 5a open due to reverse rotation of motor and de-energize relay 12. Reverse inching is similarly obtained by depressing treadle 11. Momentary depression of button 3 completes a circuit for coil of switch 1 which is now maintained through contacts 5a and 1b. Momentary depression of button 4 opens the maintaining circuit at contacts 4a with consequent opening of switch 1 and completes the coil circuit of switch 2, which closes to plug the motor. The switch 2 is maintained closed by a circuit over contacts 6a and 2b, until contacts 6a open due to reverse rotation of motor. If button 4 is maintained depressed until after contacts 6a open, the contacts 6b will close and the switch 2 will be maintained closed for continuous reverse running.
Patent GB-1357415-A (GB)
Title: Aluminium fluoride-based catalyst and use thereof in the gas-phase fluorination chlorofluorination and disproportionation of hydrocarbons and halohydrocarbons
Inventor: GROPPELLI G
IPC: C07C17/37
Filed: 1971-06-09
Abstract: 1357415 Fluorination; chlorofluorination and disproportionation MONTECATINI EDISON SpA 9 June 1971 [10 June 1970] 17890/71 Heading C2C [Also in Division B1] Gas phase fluorination, chlorofluorination and disproportionation of hydrocarbons and halohydrocarbons, namely (i) fluorination of a halogenated ethane containing at least one chlorine atom with hydrogen fluoride to provide a fluorinated or chlorofluorinated ethane, (ii) chlorofluorination of a hydrocarbon or halohydrocarbon containing two carbon atoms to provide a chlorofluorinated ethane, and (iii) disproportionation of trifluorotrichloroethane (CF 2 ClCFCl 2 ) are effected at a temperature of from 200 to 500 C. in the presence of catalyst which comprises aluminium fluoride and compounds of zinc, chromium, nickel and, optionally, iron in amounts such that the catalyst contains from 0À05 to 5 weight per cent of each of zinc, chromium and nickel and from 0 to 3 weight per cent of iron. The zinc, chromium, nickel and, if present, iron may be at least partly in the form of at least one oxide and/or at least one oxyhalide and/or at least one halide, for example fluoride. The catalyst may be prepared by a process wherein alumina or aluminium fluoride is composited with compounds of zinc, chromium, nickel and, if desired, iron in divided form and the resulting composition is heated initially in a flow of nitrogen or air and thereafter in a flow of hydrogen fluoride diluted with an inert gas, the heating in the presence of hydrogen fluoride being optional if aluminium fluoride is used; the compounds of zinc, chromium, nickel and iron used in such preparation may be halides and/or compounds, for example nitrates, convertible to oxide and/or oxyhalide and/or halide by the heat regime to which the composition is subjected. Examples relate to the fluorination (Example 2) and disproportionation (Example 5) of trifluorotrichloroethane (CF 2 ClCFCl 2 ) and to the chlorofluorination of ethylene (Examples 3, 4 and 6) in the presence of various catalysts in accordance with the invention and not in accordance with the invention; each example includes full details relating to the composition of the reaction product which contains, as appropriate, compounds selected from HCl, C 2 H 2 Cl 2 , C 2 HCl 3 , C 2 FCl 3 , C 2 Cl 4 , C 2 F 5 Cl, C 2 F 4 Cl 2  (both isomers), C 2 F 3 Cl 3  (both isomers), C 2 F 2 Cl 4  (both isomers), C 2 FCl 5  and C 2 Cl 6 .
Patent GB-1361380-A (GB)
Title: Pressure-actuated valve
IPC: B60T8/50
Filed: 1973-04-13
Abstract: 1361380 Aritiskid braking systems; valves ALFRED TEVES GmbH 13 April 1973 [15 April 1972] 17919/73 Headings F2F and F2V A pressure actuated valve device which in an antiskid braking system interrupts and reconnects an hydraulic connection between the wheel cylinder and actuating system upon movement of a plunger varying the effective volume available to brake fluid has a first valve formed by parts 10, 12 controlling the flow of pressure fluid from a master cylinder to wheel cylinders and concentrically arranged with respect thereto a second valve closing element 16 controlling flow of restricted or throttled fluid, the first valve being only capable of actuation in the opening direction after the second valve has been opened. When the valve is in use the plunger abuts a collar 24 of a ram 22, which actuates ball 16 and a cap 18 which overlaps part 12 and is kept in place by a spring 19, and tends to lift the ball 16 off its seat 15. Element 12 tends to be lifted from its seat 10 by a spring 25 and pressure fluid flows freely through a supply line 29 from a master cylinder to the wheel cylinders via bores 27. Fluid passing through compensating bores 17 in cap 18 acts on surface 28 of part 12 and when under the influence of a signal indicating an imminent skid the plunger is moved from ram 22 the force of spring 25 is overcome by the brake pressure and the valve 10, 12 closes.
Patent GB-1034661-A (GB)
Title: Improvements in weft cutters for looms
Inventor: MILLINGTON ARTHUR WILLIAM
IPC: D03D49/70
Filed: 1962-05-10
Abstract: A cutter that is operated at every beat-up of the loom, to trim projecting ends of weft from the edge of the fabric, has its moving blade slightly inclined to the fixed blade so that they have single-point contact during operation (as in a pair of scissors) and are self-sharpening.
Patent GB-165758-A (GB)
Title: Improved material for dental and other purposes and process for obtaining same
IPC: A61K6/891
Filed: 1921-07-01
Abstract: A material for dental and other purposes is prepared by first condensing phenol or a derivative with trioxymethylene or other solid body capable of liberating formaldehyde in the presence of a little alkali to yield an initial condensation product; then incorporating a body such as phosphoric anhydride to absorb the water of a later addition; next adding a sulphur-containing salt, such as sodium or potassium bisulphite, for the purpose of inhibiting oxidation; and finally hardening by means of an aqueous solution of an acid, particularly hypophosphorous acid, but also sulphuric acid or hydrochloric acid, or by means of a mixture of fuming sulphuric acid with crystalline acetic acid.  The acid treatment may be dispensed with when an acid anhydride is the water-absorbent added; amyl acetate or zinc sulphide may be added to the initial condensation product to give a light colour.
Patent GB-615264-A (GB)
Title: Improved process for the treatment of hydrophilic cellulose textiles
IPC: D06M11/05
Filed: 1946-06-14
Abstract: A process for steaming hydrophilic cellulose textiles, i.e. of regenerated cellulose, comprises treating the textiles under pressure in an autoclave with dry saturated steam in the absence of oxygen. The process is applicable equally to yarn in the form of cakes, threads and fabrics.  A vacuum should be produced in the receptacle in which the treatment is to be carried out before admitting the steam, which should be degassed.  An inert gas may be employed to fill the autoclave instead of evacuating it.  The process reduces the swelling index (defined in the Specification together with a test for its determination) from the initial figure of between 80 and 150 per cent to about 40 per cent, without deterioration of the cellulose as shown by viscosity measurements.  In an example, high tenacity viscose rayon for sewing thread is treated in an autoclave which is evacuated before admission of steam.  Dry steam at 2 kg/cm.2 pressure is admitted for 2 hours.  The degree of polymerization remains at 350 and the swelling index drops from 80 to 55.  In a further example, a roll of cloth fabric of regenerated cellulose artificial staple fibre is placed in an autoclave filled with nitrogen.  Dry steam at 1.8 kg/cm.2 is allowed to act upon it for 2 1/2 hours.  Specification 201,526, [Class 2 (ii)], is referred to.
Patent GB-1498266-A (GB)
Title: Method of silicon production
IPC: C01B33/027
Filed: 1975-05-01
Abstract: 1498266 Si production TEXAS INSTRUMENTS Inc 1 May 1975 [13 May 1974] 18168/75 Heading C1A Si of electronic purity is prepared at a yield of from 0À04 to 0À06 g/l of reactant mixture, the mixture including 80-60 vol. per cent H 2  and 20-40 vol. per cent Si tetrachloride and/or a chlorosilane, the reactants being fed to a reaction zone containing a fluidized bed of Si of electronic purity held at between 950‹ C. and 1250‹ C. at a flow rate of 0À3-1À5 1 per min. per cm<SP>2</SP> of crosssection area of reaction zone. Preferably the reactants are SiCl 4  and SiHCl 2 , in a mole ratio between 4:1 and 1:1.
Patent GB-571183-A (GB)
Title: Process for the application of metals to non-metallic surfaces
IPC: C23C18/20
Filed: 1943-11-03
Abstract: 571,183. Coating non-metallic surfaces. PROTECTIVE METAL FINISHERS, Ltd., and BERGSTEIN, G. K. Nov. 3, 1943, No. 18175. [Class 95] Also in Group II] Coating a non-metallic surface (paper, cardboard, wood) with a layer of lacquer or varnish containing metal particles, removing a part of the coating to expose the metal particles and then building up a metal coating on the exposed metal particles. The part of the coating may be removed by abrading, by use of a solvent, or by use of a chemical reagent which will destroy the lacquer or varnish. The metal particles may be of iron, zinc, copper, brass or lead and should be as small as possible. The varnish or lacquer comprises a solution of natural or synthetic resin-stove enamels are particularly suitable. The top coating may be put on by the use of an acid copper bath. It is preferred that the metal particles comprise at least 20 per cent. by weight of the coating. In an example finely powdered zinc-lead alloy is incorporated in a varnish which is then applied to a surface. The metal particles are exposed and the surface dipped into a solution of copper sulphate in aqueous sulphuric acid.
Patent GB-1114018-A (GB)
Title: Process for producing 4-hydroxycyclohexanecarboxylic acid and derivatives thereof
IPC: E05B15/04
Filed: 1967-04-20
Abstract: 4-Hydroxycyclohexanecarboxylic acid is prepared by reacting with H2SO4 a compound of formula <FORM:1114018/C2/1> wherein X is CN, CONH2 or CO2R (R=C1- 5 alkyl), and hydrolysing the product.  The acid may be esterified with a C1- 5-alkanol.  The intermediates are stated to be H2SO4-adducts of the starting materials.
Patent GB-499964-A (GB)
Title: Improvements in or relating to reciprocating engines
IPC: F16H23/04
Filed: 1937-06-30
Abstract: 499,964. Liquid - pressure engines. WATTS, R. E., DUNCAN, V. G., and PETERSON, J. M. June 30, 1937, No. 18243. [Class 69 (ii)] [Also in Groups XXVI, XXIV, XXVII, and XXVIII] An engine pump or compressor comprises coaxial pistons 6, 7 each having an inclined pin 13 connected to a parallel inclined crank-pin 3 or 4 on a shaft arranged with its axis parallel to that of the pistons. Each connecting member may be of variable length and may comprise two members 14, 15 rotatable about the crank and piston pins respectively and pivoted together about an axis parallel with the said pins. A number of cylinders may be arranged around the crank-shaft and a series of pistons may be arranged in each cylinder, working spaces being provided at 8 between the pistons and at 9, 10 at the ends of the cylinders. Specification 450,972, [Group XXIV], is referred to.
Patent GB-692002-A (GB)
Title: Improvements in or relating to spirit levels
IPC: G01C9/34
Filed: 1951-08-01
Abstract: 692,002. Levels. ADAMS, T., ADAMS, A. C., ADAMS, G. K., and ADAMS, W. H. Aug. 1, 1951, No. 18257/51. Class 97 (ii). A spirit level comprises a spirit level tube 6, Fig. 3, in a cut-away casing 12 affixed across a circular hollow core 1 by attachment in each side of the core, a fixed flange 2 round one end of the core, a removable, e.g. screwable, flange 7, Fig. 2, on the other end, and a base 3, Fig. 3, on which the core and its flanges can be affixed and varied in relation thereto to record a slope from the horizontal. The flange 2 has holes 4, Fig. 2, and screws 5, Fig. 3, passed through them to hold the spirit level tube 6 and base 3 in desired relationship. A screw passing through a hole in the flange 7 engages with the base 3 to prevent the flange from unscrewing. The fixed flange 2 is marked in degrees to enable the spirit level tube 6 to be affixed at a desired angle to the base 3.
Patent GB-586132-A (GB)
Title: Protecting metal surfaces against corrosion and corrosion fatigue by means of inorganic coatings
IPC: C09D1/00
Filed: 1943-11-03
Abstract: Protecting metallic surfaces against corrosion by applying thereto one or more coatings, free from ammonium chloride, the ingredients of which first interact to form zinc chloride, and then with zinc oxide present as an ingredient, form a zinc oxychloride cement on the said surfaces.  The zinc chloride may be formed by reacting zinc and zinc oxide with certain chloride solutions (e.g., the chlorides of lead, magnesium, manganese, barium, strontium and calcium).  Inhibitors of corrosion, such as zinc dust, and lead powder may be added, as may also compounds of copper, mercury, arsenic or other poisonous elements or complex organic compounds to discourage the growth of living organisms. Pigments such as iron oxides, china clay, red lead and ferri-cyanides may be present and also oxidizing agents such as red lead, lead chromate and ferric oxide.  If rust is present on the surface to be coated a wash of tartar emetic or other antimony salt is applied first, while if oil or grease is present, wetting agents of the sulphated alcohol type may be added to the coating. A typical single coating consists of zinc dust (containing zinc oxide), lead chloride, china clay and iron oxide, and a typical two-coat composition consists of a first coat of lead chromate, barium chloride and water, followed by zinc dust (containing zinc oxide), china clay, potassium chromate and water.  Numerous other examples of such coatings are given.  Specification 149,365, [Class 95], is referred to.