baber/WOPTO huggingface dataset:
Patent GB-752046-A (GB)
Title: Improvements in or relating to connecting means for connecting a reserve amplifier into a repeater transmission system having a plurality of transmission lines
IPC: H03F1/54
Filed: 1954-08-04
Abstract: 752,046. Unattended repeaters. TELEFONAKTIEBOLAGET L. M. ERICSSON. Aug. 4, 1954 [Aug. 4, 1953], No. 22698/54. Class 40 (4). In a communication system a spare amplifier R, Fig. 2, connected to the change-over contacts of relays 1, 2, 11, 22 is available for service in place of either of the normal repeaters F1, F2, and stray currents arising from the contact capacities are avoided by an earth connection at j which is applied to the open fixed contact of contacts a via contacts b. A screen S is provided between the two contact sets. In a modified arrangement, Fig. 3, involving three change-over contact sets on each relay, an earth connection j is applied also to the unused normal connection when the spare amplifier is taken into use.
Patent GB-170941-A (GB)
Title: Improvements in and relating to the reception of wireless signals
IPC: H04L27/06
Filed: 1920-07-30
Abstract: 170,941. Round, H. J. July 30, 1920. Atmospherics and undesired signals, eliminating; heterodyne receiving systems; thermionic amplifiers and detectors; tone-frequency tuning arrangements; secret and selective signalling systems.-In order to eliminate atmospheric or jamming disturbances, incoming signals are heterodyned and the resulting beat currents are passed through resonance circuits having exceptionally low damping-factor. In consequence the Morse characters are so smoothed out that it is necessary to record them graphically instead of by ear. Signals are fed from the aerial A through an intermediate circuit B to the grid circuit of a highfrequency amplifier and rectifier C, which also includes the heterodyne source D. The resulting beat currents are passed through special resonance circuits E, F built up of air condenser and of large amounts of copper to reduce eddy losses. If the beat tones so produced are n times the wave-length of the original signal, and if their damping is represented by d, the tuning effect of this circuit is as though a circuit for the original signal had been produced having a damping factor of d/n. In this way the effective damping can be kept as low as 0.00001 and constant over a large range of wave-amplitudes. From the resonance circuit F, the beat currents pass through amplifying-valves G, H, I to a rectifier J, and thence through amplifiers K, L to a siphon or like recorder M. Two different wave-lengths may be employed for " dots " and " dashes " respectively, in which case the parts E to L are duplicated to provide distinct paths for the two frequencies, these being led to the recorder M in different directions, so as to be registered above and below the datum line on the graph. Fig. 5 shows a typical graph of the letters A, B and C in the Morse code. Earthed screening-boxes are provided for the different parts of the apparatus, as indicated by the dotted lines, Fig. 1.
Patent GB-621032-A (GB)
Title: Improvements in or relating to sound reproducing and/or amplifying devices
IPC: H04R1/42
Filed: 1945-09-04
Abstract: 621,032. Telephone instruments. DILKS, C. F. Sept. 4, 1945, No. 22728. Convention date, May 28, 1941. [Class 40 (iv)] A sound amplifier comprises a chamber into which air is admitted under pressure and an electromagnetically controlled valve which controls its passage to an outlet. It also comprises a diaphragm which determines the initial setting of the valve under the influence of the air pressure. Air enters the chamber 15, Fig. 1, through a pipe 17 and filter 20 and passes into the outlet 23 through a valve plate 27 adjacent to a seating 25. The valve 27 is supported at one end on a spring strip 30 while its.other end carries an iron armature connected through a flat spring to a rigid support 39. The setting of the spring, and thus of the valve, is determined by a lever 49 to which it is connected and to the outer end of which is linked a flexible diaphragm 64. The air pressure deflects the diaphragm and so lifts  the valve slightly off its seating to an extent depending on the pressure. This movement is adjustable by means of a screw 54 engaging a nut 58 which depresses the lever 49 through a spring 57. Polepieces attached to a permanent magnet 81 lie on opposite sides of the armature 32 and are so placed that speech currents passed through a coil 72 cause the armature 32 and valve plate 27 to oscillate. The valve 27 comprises a rectangular block having transverse holes drilled through it parallel to the working face and these allow air to pass to a series of parallel grooves cut in the under face of the block at right angles to the holes. The seating 25 has a similar series of slots arranged in staggered relation to the grooves in the valve so as to prevent a direct flow of air through the valve.
Patent GB-730561-A (GB)
Title: Improvements in or relating to hydraulic jacks
Inventor: ORLOFF GEORGE
IPC: F15B15/06
Filed: 1951-09-28
Abstract: 730,561. Hydraulic machines. BRITISH MESSIER, Ltd. Sept. 24, 1952 [Sept. 28, 1951], No. 22758/51. Class 69 (2). [Also in Group XXXIII] The control surfaces of a guided missile are actuated by hydraulic jacks in which backlash is stated to be eliminated. As shown, the shafts 14 carry control surfaces and are actuated, through the yoke 16, by the piston rods 20, 21. The smaller piston associated with 20 is in constant communication with the source of hydraulic pressure so that constant pressure is exerted on one arm of the yoke, which pressure is normally balanced by the thrust of the larger piston associated with 21. Hydraulic pressure is developed by pump 23 and applied through control valves 24 by electromagnetic controls 125. By-pass valve 31 and accumulator 13 are provided. Specifications 711,704, 712,329, 713,940 and 730,560, [Group XXVI], are referred to.
Patent GB-222651-A (GB)
Title: Improvements in or relating to endless band conveyors or elevators
IPC: B65G41/00
Filed: 1923-09-11
Abstract: 222,651. Wentz, J. L. Sept. 11, 1923. Adjustably supporting portable conveyers and elevators.-The upper end of the conveyer is supported by struts 6 mounted on the axle 8 of the wheels 9 and pivotally connected to a nut 5 mounted on a screw 1 which is mounted in bearings 2, 3 on the conveyer framework 4. The screw 1 is connected by bevel gearing to a shaft 14 driven by belt gearing 20 from a shaft 19 which is preferably driven by the motor 21 actuating the conveyer. The belt 20 is normally loose, but can be tightened by moving a pivoted arm 24 when the conveyer is to be adjusted.
Patent GB-162983-A (GB)
Title: Improvements in fasteners for use in connection with photo- and like frames, and for analogous purposes
IPC: G03B17/04
Filed: 1920-08-03
Abstract: 162,983. Mander, H. R. Aug. 3, 1920. Sliding bolts.-A sliding-bolt fastening, for use particularly with photo and like frames, comprises a hook-shaped bolt d sliding in a guide member e secured to the back-panel b by a rivet f, the guide member having, preferably integral therewith, a spring tongue c', extending rearwardly from the bolt-guide, with which the end d' of the bolt snaps into engagement when in its operative position. The frame-flange a<1> is provided with a slot a<2> with which the nose d<1> of the bolt engages to secure the parts. Both the bolt d and the combined guide and catch members e, e' may be formed from sheet-metal blanks. The body of the guide member e may be provided with prongs e<2> for pressing into the back panel b, and may also be formed with feet or flanges adapted to bear on the back panel to assist in holding the attachment firm.
Patent GB-1467618-A (GB)
Title: Device for mooring ships
IPC: E02B3/24
Filed: 1975-05-23
Abstract: 1467618 Mooring ships WESER AG 23 May 1975 [25 May 1974] 22951/75 Heading B7S An arrangement for mooring ships comprises three hawser holding devices 1, 2 and 3, one, e.g. 1, being mounted on a block which is movable along a path 10, e.g. by means of rollers, which extends at an angle to a notional line joining the other two, the block carrying a sheave 9 so that a hawser 5 can be secured at both ends to a ship 11, and can be led between the sheaves 2 and 3 via the sheave 9, and a second hawser 4 can be secured to the ship and be held by the holding device 1. In the embodiment the holding devices comprise sheaves (11), Fig. 4, not shown, pivotally mounted in a support (14) about an axis (13) and held in position by a catch (15), (16).
Patent GB-1019396-A (GB)
Title: Paint spray gun
IPC: B05B7/04
Filed: 1963-06-10
Abstract: 1,019,396. Coating apparatus; spray producers. A. ROCHE. June 10, 1963 [June 12, 1962], No. 22969/63. Headings B2B and B2F. A gun suitable for spraying paint is provided with an inner tube 5 for receiving paint under pressure from a conduit 1, an outer passage 14 for receiving heated compressed air which sprays the paint through an orifice 6, and an air heating chamber 8 which contains an electrical resistance heater 9 and communicates with the passage 14 via perforations 11a in walls 11 and passages 12 and 13. The paint from the conduit I reaches the tube 5 through channels 2, 3 and a further passage 4 and is heated in transit.
Patent GB-1116220-A (GB)
Title: Improvements in or relating to lasers
IPC: H01S3/098
Filed: 1965-05-31
Abstract: 1,116,220. Lasers. AMERICAN OPTICAL CO. 31 May, 1965 [2 June, 1964], No. 22987/65. Heading H1C. In a laser comprising a cylindrical glass laser body, the effects of thermal stress in the laser body are eliminated by selecting the length to diameter ratio and the composition of the body such that, when a temperature gradient is present in the body from its centre to its periphery, the linear expansion coefficient, the temperature coefficient of the refractive index, Poissons ratio and the strain-optic coefficients equalize the optical path lengths for axial and peripheral rays propagating along the length of the laser body for radially or tangentially polarized light and means are provided for suppressing all modes except the TM 01  or TE 01  respectively. As shown in Fig. 5, an optical cavity is defined between a fully reflective mirror 18 and a partially transmissive mirror 21. The laser body 12 is surrounded by a helical flash lamp 14 and a Brewster angle cone 16 for the selected mode is placed at one end and may have at the other end a roughened patch 25 or a central bore to discriminate against modes having an electric vector at the axis. Non axially aligned modes are eliminated by two lenses 24, 26 and a pinhole screen 22 at their common focal point.
Patent GB-486272-A (GB)
Title: Improvements relating to spring clips
IPC: F16F1/26
Filed: 1937-08-23
Abstract: 486,272. Laminated springs. PERCIVAL, S. (Jacobs Co., F. L.) Aug. 23, 1937, No. 23110. [Class 108 (iii)] A spring clip for applying opposed lateral pressures to the edges of the leaves of a leafspring comprises two parts, one being formed of channel shape to encompass at least three sides of the spring, the sides 6, 8 of the part having inwardly-extending portions 18, 20 for positively engaging the opposite edges of at least one intermediate leaf, and the second part or locking member 26 being adapted to engage the sides of the first part to draw them towards each other for fixing the clip on the spring. As shown, the portions 18, 20 engage the opposite edges of all the leaves surrounded by the clip. Flanges 28, 30 on the locking member 26 are engaged with flanges 14, 16 on the ends of the clip and the member 26 then forced downwardly to lock the flanges together. In modifications, (a) the portions 18, 20 engage the edges of an intermediate leaf or leaves only, the other leaves fitting tightly into the corners of the clip ; and (b) the sides of the clip are curved to engage an intermediate leaf.
Patent GB-423158-A (GB)
Title: Evaporator for refrigerating machines
IPC: F25B39/02
Filed: 1934-08-10
Abstract: 423,158. Refrigerating. GES. FUR LINDE'S EISMASCHINEN AKT.-GES., Wiesbaden, Germany. Aug. 10, 1934, No. 23166. Convention date, Aug. 16, 1933. [Class 29] Evaporators comprise a substantially rectangular frame of wide bore tubes, a, b, c, d and one or more small bore serpentine tubes e with one end connected to the upper horizontal tube a near a vertical tube, and the other end to the lower part of one of the vertical tubes b, c. The upper end of one vertical tube may be enlarged to form a liquid-vapour separator h, provided with an inlet f for liquid and an outlet g for vapour, and the horizontal tubes preferably have a slight slope to the vertical tube. Oil collects in the lower pipe d and is drained off at its lower end. In one modification liquid may be supplied to the upper end of each vertical tube and the upper horizontal tube may slope on each side of a central vapour discharge connection. An evaporator may be formed by combining two frames of the form first described, with a common central vertical tube, or by connecting in series several elements of the forms described. The evaporators may be used in brine tanks or for cooling air.
Patent GB-167091-A (GB)
Title: A new or improved double-flow reservoir-pen
IPC: B43K27/08
Filed: 1920-08-06
Abstract: 167,091. Mukojima, Y. Aug. 6, 1920. Reservoir pens.-In a fountain pen of the kind having a double reservoir for different inks formed by an outer tube 3 and an inner tube 4, the flow of ink from either reservoir to the nib 11 is controlled by the rotation of the outer nibholding head 2 relatively to the inner head 1, the outer head 2 having conduits 17, 18 leading to the lower and upper sides of the nib respectively and co-operating with conduits 7, 8 in the inner head 1. The relative rotation of the heads 1 and 2 may be limited by the engagement of a stud in the head 2 with a groove in the head 1, so that either of the pairs of conduits 7, 17 and 8, 18 may be brought into alignment, or both may be closed, according to the position of the stud in the groove.
Patent GB-1466293-A (GB)
Title: Production of free-flowing sugar particles
IPC: C13K1/10
Filed: 1974-05-24
Abstract: 1466293 Production of free flowing sugar particles DAI-ICHI KOGYO SEIYAKU CO Ltd 24 May 1974 [4 June 1973] 23243/74 Heading C2S A method of producing free-flowing particles of sugar comprises kneading glucose, fructose or a mixture thereof, in the form of an anhydrous powder with a solution of glucose, fructose or a mixture thereof whose sugar concentration is from 40-95% by wt. in an amount as to make the moisture content of the resulting wet mixture less than 7%, shaping the wet mixture into particles, and drying the particles at lower than 70‹ C.
Patent GB-865959-A (GB)
Title: Thread cutting machines for the execution of very long threads
IPC: B23G1/04
Filed: 1959-07-07
Abstract: 865,959. Screw-cutting lathes. CRI-DAN. July 7, 1959 [Sept. 12, 1958], No. 23387/59. Class 83 (3). A thread-cutting lathe of the type having cams for the transverse approach movement, the cutting feed and the pitch-controlling movement of the tool, has the last-named cam replaced by a lead-screw clamped to the cam-shaft and engaging a nut which may be held stationary, or driven at a high speed in the same direction as the lead screw for a quick-return movement of the tool carriage. The work 4, Fig. 1, to be threaded is held between a headstock 2 and tailstock 3 and is operated on by a tool mounted on a transverse slide supported by a carriage 6. The transverse movements are effected by a pair of cams 10, 11, mounted on a cam-shaft 8 driven from the lathe headstock through a shaft 9. The carriage is adapted to be clamped to the bed when a pitch-cam is used for the longitudinal movement but, in the present case a lead screw 14 is secured by a collar 15 in place of the pitch-cam and the carriage is free to move under control of the lead-screw and a nut 20, Fig. 2. The carriage is provided with buffers 18 and 19, Fig. 1, engaging stops on the bed to cushion the end of the movement and stops 35 operate switches 33, 34 to control the automatic cycle. Operation. The cycle starts with the carriage in the R.H. position with the tool-slide retracted. A magnetic clutch 13, 32, Fig. 2, is operated to engage a dog clutch 12 to start the rotation of cams 10, 11, to bring the tool into the cutting position. A second electromagnetic clutch 24 is next released enabling a spring 24<SP>1</SP> to engage a non-rotating dog-clutch 21 with the nut 20 to hold it stationary. Rotation of the lead-screw by the shaft 8 then gives the cutting traverse to the tool, the cams 10 and 11 having been declutched prior to this. The traverse proceeds to the desired end-position defined by switch 33 which starts up the drive to the cams 10, 11, to withdraw the tool. The nut is next released and driven at high speed by the motor 17 in the same direction as the lead-screw so that the carriage is withdrawn to the starting position.
Patent GB-299148-A (GB)
Title: Improvements in or relating to washing apparatus for coal, or the like
IPC: B07B1/18
Filed: 1927-09-07
Abstract: 299,148. Denby, A. P. Sept. 7, 1927. Rotary sieves. - A rotary screen d for coal is fitted with a cylindrical brush h engaging the screen frictionally by gravity or spring pressure, and mounted in slots n, Fig. 2, or on pivoted arms q, Fig. 3, so as to be self-displaceable during rotation in order to prevent damage to the bristles.
Patent GB-337449-A (GB)
Title: A vegetable drainer
IPC: A47J43/24
Filed: 1929-08-01
Abstract: 337,449. Wakefield, C. Aug. 1, 1929. Lids and covers. - A device for draining water from boiled vegetables and the like consists of a disc a with corrugations b running across a part of its surface, a handle fixed by a screw f, and clips c for attaching the device to the top of the containing vessel, so that the water will pass away through the corrugations.
Patent GB-164034-A (GB)
Title: Improvements in the production of glycerine by fermentation
IPC: C12P7/20
Filed: 1919-09-25
Abstract: Acetaldehyde produced along with alcohol and glycerine during the yeast fermentation of sugar solutions in presence of a mixture of about equal parts of alkali bisulphite and sulphite is absorbed as produced by the bisulphite.  As the fermentation proceeds, additional quantities of solutions of the mixed salts containing the same or a larger proportion of bisulphite may be added.ALSO:Glycerine is produced by fermenting sugar solutions containing a mixture of about equal weights of alkali bisulphite and sulphite.  The mixed sulphites may be added in successive small quantities to a proportion corresponding to the percentage of glycerine desired, the proportion of acetaldehyde and alcohol being greater the less the proportion of sulphites; and the liquid may be maintained approximately neutral by successive additions of alkali bisulphite in the additions of the mixed sulphites.  In an example in which the maximum glycerine yield is required, 311 gallons of a solution of crude cane sugar equivalent to 788 lb. of glucose are fermented by 40 lb. of yeast at a temperature of 35-37 DEG  C. for 9 days, and during the first 5 days 176 gallons of mixed sodium sulphite and bisulphide solution equivalent to 545 lb. Na2SO3 are added in doses first of 40 lb. and then of 30 lb. mixed salts in 16 gallons water.  In this way, 336 lb. glycerine, 172.2 lb. acetaldehyde, and 37.4 lb. alcohol are produced.
Patent GB-480718-A (GB)
Title: A method of protecting molten magnesium and its alloys from the action of air
IPC: B22D21/00
Filed: 1936-08-28
Abstract: Molten magnesium and alloys rich in magnesium are protected from the action of air by applying to the free surface of the melting or molten material, practically anhydrous solid organic substances, e.g. asphalt, casein, horn meal, or sugar, which combust in the air with the formation of a froth inert to magnesium, in sufficient amount to yield, on carbonizing, a permanent hard protective crust over the entire surface of the melt.  Chlorine-free inorganic compounds of higher specific gravity, such as fluorspar or sintered magnesite, may be added to the organic substances.
Patent GB-425579-A (GB)
Title: Improved cabinet bed
IPC: A47C17/40
Filed: 1934-08-17
Abstract: 425,579. Cabinet beds. COORSH, D., and COORSH, S., 157, Brook Street, Glasgow. Aug. 17, 1934, No. 23727. [Class 52 (ii)] In a cabinet bed of the kind in which a folding bed frame is secured to the interior of a cabinet and to the front of the cabinet which moves outward while remaining vertical to extend the bed frame, the frame comprises at least five pivotally connected sections including a middle section connected to adjacent sections so that in the folded condition of the frame the two sections adjacent the middle section hang down from the middle section in parallel relationship. The frame comprises sections 1-5 of angle iron connected by rule joints, the inner section 1 being secured to the rear of the cabinet, while the outer section 5 is rigidly secured to the movable front 15. The latter is supported by a frame 16 which forms runners for a drawer 13 and carries wheels or castors 14 so that the front can be drawn forward while still remaining upright. The section 2 of the frame is connected to the back of the cabinet by a hinged stay 9 and a spring 10, and the middle section 3 is provided with legs 7. A storage compartment 19 is provided in the top of the cabinet.
Patent GB-484956-A (GB)
Title: Improvements in or relating to radio receiving apparatus
IPC: H04B1/08
Filed: 1937-08-31
Abstract: 484,956. Wireless receiving-apparatus. NAAMLOOZE VEINNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 31, 1937, No. 23821. Convention date, Sept. 3, 1936. [Class 40 (v)] The casing 1 of a radio receiver comprises a single moulding of synthetic resin, the inner surface of which is provided with projections to which the components are secured. Apertures 4 and 5 for the loudspeaker and tuning scale respectively are provided in a rectangular projection moulded with the casing ; this projection also carries moulded guides 14, 15 for two intermediate-frequency transformers which are cemented in place as shown in Fig. 5. The tuning coils are cemented in rimmed projections 11 ; lugs 6 carry the output transformer and lugs 13 the tuning condensers and wave-range switch. The mains supply apparatus is mounted on a wooden base 2 detachably mounted in the base of the casing. The valves are mounted in holders 8. The invention renders a unitary chassis unnecessary and facilitates assembly and mass production.
Patent GB-704408-A (GB)
Title: Improvements in or relating to discharge tubes comprising a metallic exhaust tube and method of finishing hermetically pinched, metallic exhaust tubes of discharge tubes
IPC: H01J9/40
Filed: 1951-10-12
Abstract: 704,408. Discharge apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 12, 1951 [Oct. 17, 1950], No. 23828/51. Class 39(1) In hermetically closing by pinching the metal exhaust tube 1 of a discharge tube, the closed end 2 is provided with a metallic protective layer 3, which may be of copper or nickel, and may be applied electrolytically or by the Schoop method.
Patent GB-225824-A (GB)
Title: A process for the preparation of dihydrocodeinone from thebaine
Filed: 1924-10-08
Abstract: Dihydrocodeinone is prepared by treating thebaine with hydrogen in the presence of an acid and of a comparatively large amount of a catalyst, such as platinum or palladium (preferably in the form of "black") or their salts.  According to the example, thebaine is dissolved in hydrochloric acid, about 5 per cent of palladium black is added, and the whole then agitated with hydrogen at ordinary temperature; the product is precipitated with alkali and crystallized from alcohol.ALSO:Dihydrocodeinone is prepared by treating thebaine with hydrogen in the presence of an acid and of a comparatively large amount of a catalyst, such as platinum or palladium (preferably in the form of "black") or their salts.  According to the example, thebaine is dissolved in hydrochloric acid, about 5 per cent of palladium black is added, and the whole then agitated with hydrogen at ordinary temperature; the product is precipitated with alkali and crystallized from alcohol.