baber/WOPTO huggingface dataset:
Patent GB-375948-A (GB)
Title: Improvements in the recovery of molybdenum from mixtures of molybdenum or molybdenumcompounds with other metals or metal compounds
IPC: C22B34/34
Filed: 1931-05-18
Abstract: In a modification of the process of the parent Specification for the recovery of molybdenum from mixtures thereof with other metals or compounds of the type therein specified, the mixture is roasted at 400-600 DEG  C. with oxygen, or gases containing or supplying oxygen, such as air, and extracted with a solution containing ammonium carbonate, which may additionally contain free ammonia or ammonium sulphide or both.  An excess of 0,01 gram ammonia, free and combined, per gram of molybdic acid to be extracted is specified.  The concentration of carbon dioxide in the solution is preferably about one quarter of that of the ammonia, but may be smaller or greater up to the point when the solution is saturated therewith.  The ammonium carbonate may be produced during the extraction by passing carbon dioxide into the solution containing ammonia or ammonium sulphide or both. Molybdic acid may be precipitated from the filtered solution by hydrochloric acid.  The residue obtained by filtering the ammonium carbonate solution, if containing zinc, may be roasted for reuse in the preparation of catalysts.
Patent GB-248611-A (GB)
Title: Improvements in and relating to the grinding of rollers, rings and the like
IPC: B24B37/08
Filed: 1925-06-05
Abstract: 248,611. Barthel, H. June 5, 1925. Rollers, treating; centreless grinding.-In a machine for grinding rollers, rings, &c.. two grinding-discs a, b are employed, between which the rollers are ground, the rollers, or cages containing them, being caused by centrifugal force to roll around a ring closing the gap between the discs and separate therefrom. Fig. 2 shows cages c having apertures d to contain the rollers e which may be placed in the apertures so that either their curved surfaces, or their end surfaces are ground. The dises may rotate in opposite directions; the cages may be either circular or elliptical.
Patent GB-443015-A (GB)
Title: Improvements in or relating to fuel injection apparatus for internal combustion engines
IPC: F02M63/04
Filed: 1934-05-16
Abstract: 443,015. Supplying liquid fuel. CONTINENTAL MOTORS CORPORATION, 12801, East Jefferson Street, Detroit, Michigan, U.S.A.-(Assignees of Vincent, E. T.) May 16, 1934, No. 14783. Convention date, Jan. 12. [Class 7 (iii)] A fuel valve, urged towards its closed position by resilient means and maintained closed by mechanical loading moans, is opened by fuel pressure after the loading means are released and is closed by the resilient means as the pressure falls, after which the mechanical loading means are operative to hold the valve closed. The fuel is delivered by a pump into a pipe line containing a pressure-regulating valve and is fed to the injectors through pipes 38 containing valves which enable the fuel supply to any cylinder to be cut off. The fuel passes through a bore 41 and channels 28 in the valve stem 25 to a chamber 45 around the tip of the valve which is held closed by a light spring 44 supplemented by a heavy spring 60 acting through a rocker arm 30. The rocker bears on a rod 24 above the valve stem. An eccentric 33 compresses the spring 60 to take the pressure of the rocker, the fuel pressure then opens the valve and injection takes place, and when the pressure falls the spring 44 closes the valve and separates it from the rod 24. If the pump delivers before the spring 60 is released to allow the rocker arm 30 to seat the rod on the valve, the pressure on the head of the valve will hold it closed, but normally the spring 60 is released to close the valve before fuel is delivered by the pump. At abnormally high speeds the spring 60 may close the valve before the pressure has fallen sufficiently to allow the spring 44 to operate. Leakage past the valve is conducted away through a conduit 42<a>. In modified constructions, the valve and rod 24 are either integral or are separated above the bore 43. Specification 437,899 is referred to.
Patent GB-679408-A (GB)
Title: Improvements in or relating to a device for the measurement of the value of the time autocorrelation function of the voltage developed across an electrical impedance
Inventor: FUCHS GEORGES
IPC: G06G7/19
Filed: 1950-06-13
Abstract: 679,408. Measuring bridges; delay pulse voltage measurement. SOC. ANON DE TELECOMMUNICATIONS. June 13, 1950, No. 14788/50. Class 37. In apparatus for determining the time autocorrelation function of the delay pulse voltage appearing across an impedance under test (e.g. a coaxial line for telecommunications transmission) by reflection from impedance irregularities therein when subjected to excitation by pairs of successive short voltage pulses, a pilot pulse generator 13 of recurrence time To triggers a pulse generator 141 directly and a pulse generator 14 through an adjustable phase delay network 30. The generator outputs are combined as a train of pairs of pulses separated by time intervals T which are variable by the network 30, and the generators are adjustable to cancel or reverse the polarity of either pulse of each pair in the output train, which energizes a normally balanced Wheatstone bridge 15 comprising fixed resistance arms 33, 34, a balancing network 17, and a transmission line under test 16, terminated in a network 17<SP>1</SP>. The bridge output is amplified at 18, 19 to deflect a C.R.O. 20 synchronized from the pilot pulse generator, and is further amplified at 21 to energize a quadratic integrator 22 (e.g. an amplifier and thermojunction, or a square law detector and integrating condenser) operating a recording galvanometer 32 whose scanning operation is synchronously controlled by a manual or automatic sweep adjustment 31 of the delay network 30 over a range of values of the pulse pair interval T, so that the integrated and squared bridge output is plotted as a function of T. Since the bridge is normally balanced, the exciting pulse train is eliminated from its output, which comprises only the pulse voltage appearing across the test impedance due to reflections from successive irregularities therein. If the voltage excited by a single pulse is defined by f(t) the required time autocorrelation function is shown to be (A<SP>1</SP>) and the integrated and squared bridge output is shown to be (B) when the exciting pulses have the same polarity, and (Bi) when the second pulse of a pair is reversed in polarity with respect to the first. Thus the required function A<SP>1</SP> is given by A<SP>1</SP>=“[BB<SP>1</SP>]. The required function may be otherwise computed from the measured results. Expressions for the required function and for the measured results when the pulses of a pair are of similar or opposite polarities, may be set forth as functions of the length of the transmission line, the distances of the reflecting irregularities from the line input, and the velocity of propagation along the line. A mathematical analysis is given, and may be extended to the measurement of the autocorrelation function of a transmission line comprising an indefinite number of line sections, equivalent to the section under test, connected in tandem.
Patent GB-104646-A (GB)
Title: Improvements in or relating to Lubricating Systems.
Inventor: SHEPPY CHARLES LYNAN
IPC: F16C33/10
Filed: 1916-10-18
Abstract: 104,646. Sheppy, C. L. May 24, 1916, [Convention date]. Channels in bearings.-In a lubricating system for crankshafts &c., of the kind in which oil is supplied under pressure to an annular groove in one of the bearings and passes thence through radial and axial passages in the shaft and the cranks to similar grooves in the other bearings, the grooves G in the bearings or bearing-bushes are narrower than the radial passages e in the shaft and are arranged obliquely, so as to be intersected on both sides by the radial plane containing the axis of the passage e. With this arrangement, every part of the journal is subjected to wear, and the formation of a ridge in the plane of the groove is prevented.
Patent GB-439153-A (GB)
Title: Improvements in or relating to grids for electric discharge tubes
IPC: H01J19/38
Filed: 1935-05-21
Abstract: 439,153. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. May 21, 1935, No. 14826. Convention date, Aug. 8, 1934. [Class 39 (i)] A self-supporting grid for electric discharge tubes comprises two or more helical wires secured to each other at some or all of the intersecting points, for example, by welding or the like. Two oppositely wound single helices 1, 2, Fig. 2, developed view, or two oppositely wound double helices 4, 5, Fig. 3, or a single and an opposed double helix, Fig. 4 (not shown), may be employed. The ends of the grid may be secured in an annular support 10, Fig. 6, having a groove 12 for the reception of the grid wires.
Patent GB-998126-A (GB)
Title: Manufacture of polyolefin film
IPC: B29C48/08
Filed: 1962-04-17
Abstract: 998,126. Polyolefin films. KALLE A.G. April 17, 1962 [April 20, 1961 (2)], No. 14922/62. Heading B5B. A polyolefin film having a clear smooth surface is produced by extruding a molten film 2 downwards from a slot-shaped nozzle 1 and pressing the still molten film at a pressure of 25-1000 mm. of water against the moving surface of a water-cooled chromium plated roller 7 by means of a stream of gas of the same width as the film from a slot-shaped nozzle 3. The width of the film may be 0À1-1À5 mm., its thickness may be 30 Á, and its rate of flow may be 50 m/min. A baffle plate (not shown) may be situated between nozzles 1 and 3. The angle of impingement of the gas stream with the advancing film may be 95-110 degrees. The distance of the nozzle 3 from the film may be 1-50 mm. The gas may be at room temperature or above, and may be air, nitrogen or carbon dioxide. A slip-improving agent in the form of an aerosol may be added to the gas before it issues from nozzle 3 (Figs. 2 and 3, not shown). The aerosol may be formed from an aqueous solution or dispersion in water and/or an organic solvent. The slipimproving agent may be sodium chloride, carbonate, bicarbonate, perborate, sulphate, oxalate, fumarate, terephthalate, or alginate, trisodium phosphate, calcium bromide or carbonate, titanium dioxide, silica, kaolin, bentonite, aluminium oxide, mica, glass powder, zinc stearate, dimethyl terephthalate, terephthalic acid, polyvinyl alcohol, methyl cellulose, hydroxymethyl cellulose, dextrin, starch, casein, zein, silicone, linseed, olive, or paraffin oil, glycerine, glycol, or methyl alcohol. A coloured salt, e.g. cobaltous chloride, Mohr's salt chromic chloride, or copper sulphate, may also be introduced into the aerosol. The polyolefin may be a polymer of ethylene, propylene, butene-1, or methylpentene, or a copolymer or ethylene and propylene, ethylene and butene-1, or propylene and butene-1.
Patent GB-939537-A (GB)
Title: Process and apparatus for grading radioactive ores
Inventor: LAFORET ANDRE
IPC: B07C5/346
Filed: 1961-04-25
Abstract: 939,537. Measuring weight electrically. COMMISSARIAT A L'ENERGIE ATOMIQUE. April 25, 1961 [April 25, 1960], No. 14990/61. Class 40 (1). [Also in Group XL (b)] A voltage t1 (Fig. 1) proportional to the weight of radioactive ores carried by a conveyer belt 1 is derived via a rectifier 20 from a transformer 19 the current through the primary of which is determined by the position in an inductance 18, connected in series with the transformer primary, of a magnetic core 17 attached to a deflectable platform 14 across which the conveyer belt travels. This voltage is then utilized in . circuit 7 to adjust the'threshold value at which an electrically operated flap 3 directs the ore into one or other of shoots 5, 6 in accordance with the value of a voltage t2 proportional to the radio-activity of the separated ore in container 9.
Patent GB-117002-A (GB)
Title: Apparatus for Moistening and Treating Air in connexion with a Gas or other Fire Stove.
Inventor: GOVER HENRY CHARLES
IPC: F24C15/00
Filed: 1917-10-17
Abstract: 117,002. Gover, H. C. Oct. 17, 1917. Air, moistening.-For moistening or medicating air in connexion with a gas fire or other stove, water is evaporated in a vessel D placed near the fire and connected by a flexible or other pipe with a vessel B containing a ball cock so that the level of water supplied from a reservoir A is maintained constant. Steam escapes at an opening H, in front of which a box containing sponge or other absorbent saturated with a suitable medicament may be placed as indicated in Fig. 2.
Patent GB-623963-A (GB)
Title: Improvements in or relating to feeding devices for rock drills
IPC: E21B19/081
Filed: 1947-06-06
Abstract: 623,963. Percussive drills. INGERSOLL-RAND CO. June 6, 1947, No. 15028. Convention date, Jan. 25, 1944. [Class 124] [Also in Group XXVI] In a feeding device for rock drills having a fluid-actuated motor for driving a feed screw and a valve controlling the outlet of the driving fluid, the rock drill engages the valve when in the rearward position to close the outlet and stall the motor. As shown, a drill body 21 has a driving unit 30 co-operating with a feed screw 24 driven by a reversible fluid-operated motor. When driving the tool forward the motor is vented to atmosphere, and when retracting the tool the exhaust fluid is led through a passage 47 to a chamber 50 and to the atmosphere by a vent 51. The drill, on being retarded, makes contact with an extension 56 on a slide valve 53 in the chamber 50 and pushes it against a spring 55 to cover the outlet of the passage 47 which causes the motor to stall before the drill makes contact with the body of the fluid-operated motor.
Patent GB-811653-A (GB)
Title: Sealing slide fasteners and method of and apparatus for making the same
IPC: B60J10/90
Filed: 1956-05-15
Abstract: 811,653. Moulding sliding-clasp fasteners. GOODRICH CO., B. F. May 15. 1956 [May 19, 1955], No. 15077/56. Class 87(2). [Also in Group XXV] A sliding clasp fastener (see Group XXV) having one or more curved parts is formed with rubber sealing strips 40, 41, Fig. 11. A fastener having teeth 35, 36 on fabric, e.g. cotton or nylon stringers 37, 38 is separated and the parts laid on a lower mould 51 having recesses 57 for the teeth 36 and a corrugated part 63 for that part of the stringer which is to form the inside of the curved part. A metal shield 87 is then placed over the teeth, and those parts of the teeth and fabric which are to receive the rubber may be painted with an adhesive. A strip of rubber 88 is placed over the shield and an upper mould is closed over the lower mould. The upper mould has a complementary corrugated part to fit over the corrugated part 63, aee Fig. 7 (not shown). The mould is then placed in a curing press. After removal from the mould, the finished fastener may be placed in a final shaping mould where the fastener is set in the desired curve, see Fig. 13 (not shown). The rubber may extend as a layer of 42 over the fabric.
Patent GB-771706-A (GB)
Title: Improvements relating to motor vehicles
IPC: B62D1/18
Filed: 1955-05-25
Abstract: 771,706. Motor vehicles. DAIMLER-BENZ AKT.-GES. May 25, 1955 [May 25, 1954], No. 15088/55. Classes 79(3), 79(4) and 79(5). [Also in Groups X and XXXV] In a motor vehicle having a housing 9 accommodating instruments 10, the steering wheel 14, a gear shift lever 11, a hand brake 13, an accelerator pedal 12 and a hot air nozzle 15 and displacable transversely of the vehicle in front of seats in the front of the vehicle, the housing can be secured in different positions, provision being made for maintaining or establishing connections to the instruments and controls in each position. As shown in Fig. 1 the housing is adjustably mounted on a front wall 3 of the passenger whereby the driver can be seated at the right or left hand side or in the middle of the vehicle front seat 7. At its lower end the housing 9 carries projections 19, 20 engageable with recesses 22 in the vehicle floor 1 and at its top end the housing 9 is secured to a rearward projection 5 of the wall 3 by a screw 25 operated by a member 24 and engaging a nut 27 secured to the wall 3, the housing having a guide portion 18 engaging a transverse portion 17 of the wall. In a modification, Fig. 3 (not shown) the housing is provided with two screws at its upper end and a single projection at its lower end. In a further modification, Fig. 4 (not shown), the housing carries at its upper end a rotatable pinion engaged with a transverse rack secured to the front wall, a roller at the lower end of the housing engaging a transverse groove in the vehicle floor. The steering wheel and gear shift controls are transmitted electrically, and the pedal and hand brake controls are transmitted hydraulically, the instruments being motivated either hydraulically or electrically. The controls are effected through flexible lines leading to a plug 32 which can be plugged in a socket 33 on the wall 3. In the second embodiment, Fig. 4 (not shown), a single flexible tube passes through a central opening in the front wall and is of sufficient length to accommodate the extreme side positions of the housing. The steering control may alternatively be effected hydraulically, or mechanically by means of a Bowden cable or by means of a conventional steering gear having a suitable plug coupling on the front wall.
Patent GB-1511637-A (GB)
Title: Surface channel field-effect transistors
IPC: H01L29/10
Filed: 1977-04-12
Abstract: 1511637 Field effect transistor SIEMENS AG 12 April 1977 [4 May 1976] 15194/77 Heading H1K In a field effect transistor comprising source 2 and drain 3 regions (Fig. 1) in one surface of a substrate region 1 of the opposite conductivity type, with a gate electrode 7 located above the source-drain gap to enable an inversion layer to be created there in operation, a channel 9 is provided between the source and drain regions, doped with atoms providing energy levels at a distance of at least ¢kT, where T is the temperature of operation, from the edges of the conductivity and valence bands. In a P-type silicon substrate the dopant atoms may be of sulphur or zinc for room temperature operation or arsenic or indium for operation below 70 K., and are preferably ion-implanted. The channel 9 may lie wholly beneath inversion layer 8 as shown, or may overlap or lie within it, and the gate may be insulated from the substrate as shown or form a Schottky barrier with it. The transistor, operation of which is explained, exhibits a gate controllable negative resistance in its S-D I-V characteristic, and may be used as a relaxation oscillator.
Patent GB-586124-A (GB)
Title: Improvements in the breech-mechanism of automatic firearms
IPC: H04R13/02
Filed: 1941-06-20
Abstract: 586,124. Automatic guns. ELLARD, H. June 20, 1941, No. 15243/42. Divided out of 586,118. Drawings to Specification. [Class 119] Relates to magazine-fed automatic guns of the kind having a non-rotatable breech-bolt 17, Fig. 11 (see drawings of Abridgment 586,118), slidably fitting a tubular breech casing 2, Fig. 3, a striker post 27, Fig. 14, slidably fitting the breech-bolt, and a rocking locking-bolt 23, Fig. 12, on the breech-bolt which engages an abutment 11 on the breech casing. According to the invention, the breech casing has a longitudinal top slot 8, Fig. 3, and transverse locking, abutments 11, the striker post is connected with the gas piston-rod 36, Fig. 17, by pins 34, 35, Figs. 19, 20, passing through the top slot 8, and the locking bolt, pivoted at its forward end 22 to the breech-bolt, co-operates at its rear end with the abutments 11, and also with inclined planes 39, 41, Figs. 15, 17, on the striker-post 27 and rod 36 which serve to lock and unlock the bolt. The breech casing, the breech-bolt and the striker are constructed as described in Specification 586,118 by machining cylindrical metal bars.
Patent GB-149492-A (GB)
Title: Improvements in or relating to incubators
IPC: A01K41/00
Filed: 1919-06-18
Abstract: 149,492. Hobbs, F. June 18, 1919. Hatching-appliances.-In an incubator having a waste tank heated by a gas or oil burner the temperature is controlled by a thermostat lever N connected by a rod of adjustable length to the gastap or to a damper over the oil lamp. The parts of the rod 0 are connected by wing-nuts Q. The damper comprises a counterbalanced hinged flap U arranged within the lamp chimney T'. A hood K over the burner leads to a flue J passing twice through the tank to an outlet H.
Patent GB-224499-A (GB)
Title: Improvements in window regulators
IPC: E05F11/38
Filed: 1924-06-25
Abstract: 224,499. Ternstedt Manufacturing Co., (Assignees of Heintz, E. E.). Nov. 5, 1923, [Convention date]. Cleats. - In drum and cable opening &c. devices for sliding windows the stud engaging the window is secured to the cable by means of a cleat, Fig. 4, comprising two plates x, y united by rollers &c. h the cord being passed through the notches i and over the rollers as shown.
Patent GB-964339-A (GB)
Title: Improved liquid atomizer
IPC: B05B5/16
Filed: 1961-04-27
Abstract: 964,339. Spray-producers; coating-apparatus. SVENSKA MASKINAKTIEBOLAGET GREIFF. April 27, 1961 [April 27, 1960] No. 15306/61. Headings B2B and B2F. An atomizer for use in elec trostatic coating installations is of the rotary or gas atomizing type to which heated elec trostatically charged paint is supplied from a heat ex changer connected to a high voltage source, the heat trans ferring medium of the exchanger being electrically non conducting. As shown in Fig 1 a pneumatic spray gun 1 anc heat exchanger 2 are mounted on an insulator 15, are electrically interconnected and main. tained at a high potential by a cable 3. Compressed air is heated in a heater 5 and passed to the heat exchanger and then fed to the gun where it atomizes the heated paint; the paint is fed by a duct 14 to the heat exchanger and then by a duct 15a to the gun which has charging electrodes 8. In Fig. 3 the gun is replaced by a rotary disc 10 driven by an air motor 11 and supplied with heated paint from the heat exchanger via duct 15a. The disc may be of electrically conductive or non- conductive material and may be connected to the high tension line 3. The heater is heated by compressed air from a heater 5, and the air is recirculated by a pump 14a. The nozzle of the gun 1 is modified in Fig. 2 to provide a 360 degrees spray field which is deflected forwardly both by an electrode 8 and a compressed air stream supplied to a duct 9. The object 7 to be coated is earthed and represents the positive pole in the high tension system.