baber/WOPTO huggingface dataset:
Patent GB-491966-A (GB)
Title: Improvements in or relating to bracing members for structures such as vehicle underbodies and girder floors
IPC: B62D25/20
Filed: 1937-02-11
Abstract: 491,966. Vehicle bodies. SMITH, W. H. S. KAY-. Feb. 11, 1937, No. 4099. [Class 108 (i)] [Also in Group X] A bracing member for vehicle bodies is of such form that when it is applied to the surface or surfaces to be braced, it forms with the said surface or surfaces a totally or substantially totally enclosed hollow figure, e.g. a hollow pyramid or cone or a truncated such pyramid or cone. A vehicle under-body comprising a floor 1 on longitudinal section-girders 2 may be braced transversely by metal plates 3 bent to form triangular faces, the plates being welded or otherwise secured to the girders and to the floor. Metal plates bent to form, with the floor, truncated pyramids 4 may be placed between the girders. Longitudinal bracing plates 5 of similar form may be secured to the girders 2. A floor supported at its corners may be braced by similarlyformed members radiating from the centre to the corners and secured as by welding to each other and to the floor.
Patent GB-784856-A (GB)
Title: Improvements in recording television pictures on cinematograpic film
IPC: C07C45/50
Filed: 1954-02-12
Abstract: 784,856. Television. SOC. NOUVELLE DE L'OUTILLAGE R.B.V. ET DE LA RADIOINDUSTRIE. Feb. 12, 1954 [Feb. 21, 1953; March 16, 1953], No. 4249/54. Class 40 (3). In an arrangement for recording interlaced television images on intermittently moving kinematographic film by exposing the film during alternate field scans of the cathode-ray tube 6 which reproduces the images the fields which occur when the film is obturated being photographically effective (due to the " afterglow " of the tube) in the subsequent exposure period the gain of the video amplifier 3 which supplies the television signals to the tube 6 is controlled in accordance with a gain control voltage having the waveform shown at J (Fig. 4), the positively-going portions occurring during the non-exposure and the negatively going portions occurring during the exposure of the film in order to compensate for the light decay characteristic of the screen of tube 6. As shown, the gain of amplifier 3 is controlled by clamping its control grid to the potential of waveform J by means of a clamp circuit 11 controlled by clamping pulses occurring during line retrace periods so that its gain remains constant during line-trace periods but varies from one line to the next in accordance with the variation of waveform J. The output of amplifier 3 is then supplied to the tube 6 via a second amplifier 14 the control grid of which is clamped to a reference potential (to restore the D.C. level) by means of a second clamp circuit 15 also controlled by pulses occurring during the line retrace periods. To compensate for the " gamma " effect of tube 6 the signals are initially (prior to input amplifier 3) amplified in an amplifier having a suitable characteristic and the gain of which is controlled in similar manner to that of amplifier 3 (Fig. 8, not shown). Specification 640,186 is referred to.
Patent GB-668500-A (GB)
Title: Improvements in or relating to luminaires
IPC: F21V17/00
Filed: 1950-02-20
Abstract: 668,500. Lamp fittings, PITTSBURGH REFLECTOR CO. Feb. 20, 1950 [Sept. 8, 1949]. No. 4332/50. Class 75(ii) and (iv) The opaque or translucent side panels of a luminaire are detachably secured by engaging spring clips on the panels with flanges on the end members of the luminaire. A strip 24 of springy material formed at its upper end as a hook 25 and at its lower end as a tongue 26 is riveted to each end of each side panel and when the panel is applied to the luminaire the hooks 25 engage slots 19 in the upper edges of transverse flanges 18 offset inwardly from the edges of the end members 11 and the tongues 26 snap into openings 20 near the bottom of the flanges. The luminaire comprises an inverted channel-member 17 to which the end members are secured and which houses the ancillary electrical equipment for the fluorescent lamps 14. A V-shaped reflector 16 and a louvre 15 are provided.
Patent GB-288405-A (GB)
Title: Improvements in or relating to tripping mechanisms of rotary printing machines
IPC: B41F33/08
Filed: 1927-02-16
Abstract: 288,405. Linotype &. Machinery, Ltd., and Dowson, R. Feb. 16, 1927. Sheet-registering devices; gripper mechanism; sheet-carriers.-When one of the cylinders of a rotary printing-machine, e.g. the offset cylinder 2 of a lithographic offset machine, is tripped by rotating its eccentric bearings by means of an adjustable rod 48, and mechanism controlled by a pedal 8 and a link 32, the feed grippers are simultaneously tripped, and sheet stops are maintained raised in the path of the sheet while the cylinder is tripped. The sheets are normally fed to stops .fixed on rocking shaft 35 which depresses the stops in time for the registered sheet to be taken by grippers 22 carried by arms on a rock shaft 25. The grippers 22 are spring- closed and are opened by a cam 24 which rocks on shaft 25. When the pedal 8 is depressed to trip the cylinder 2, a lever 31, rod 30, and arm 28 moves a stop 26 into the path of cam 24 which is thus prevented from opening the grippers 22. When the shaft 7 is moved to trip the cylinder 2, a link 42, lever 41, rod 38, and spring 38a actuate an arm 37, freely mounted on the shaft 35, and stops 36 which are freely mounted are moved into the path of the sheet and remain there until the cylinder 2 is untripped. A sheet can be registered against these while the cylinder is tripped.
Patent GB-1490143-A (GB)
Title: Magnetically operable electric switches
IPC: H01H1/66
Filed: 1975-01-31
Abstract: 1490143 Magnetic switch and relay construction G YGFORS 31 Jan 1975 [7 Feb 1974] 4382/75 Heading H1N [Also in Division B3A] The armature and contact carrier members of a magnetically operable electric switch or relay are formed by a member of strip form with a layer of electrically conductive non- magnetic metal coated, at least partially, on one or both sides by electrochemical means with substantially pure iron. Such members may be mechanically treated to compress the plating. The members may be cut from a strip and form the reeds of a sealed magnetic reed relay (Fig. 1) with contacts on the plated adjacent sides and can be arranged for normally closed, normally open, break before make change-over or make before break change-over operation (Figs. 2 to 9, not shown). The members may form the armature 56 and fixed members 51, 52 of a relay on a printed circuit board 70. Fig. 10a shows plated members 81, 82 magnetisable, to close contacts 84, 86, under the influence of a coil 87 or a movable permanent magnet 90. (For Figures see next column.)
Patent GB-658872-A (GB)
Title: Improvements in and relating to electrical socket connecting means
IPC: H01R13/40
Filed: 1949-02-17
Abstract: 658,872. Two-part couplings; holders for - discharge tubes. OFFEN, F. J., and GARRARD ENGINEERING & MANUFACTURING CO., Ltd. Feb. 17, 1949, No. 4391. [Class 38 (i)] A socket connector for a radio gramophone pick-up or a valve comprises an insulating body 1 having bifurcated spring contacts 10 inserted bifurcated end first into apertures 6 and retained therein by interengaging parts on the contacts and body. In the embodiment shown, the contacts are flat and the apertures 6 are circular and terminate in flat slots 8 forming shoulders 9 which engage recesses 14 in the tongues 11 of the contacts. Insertion of a circular plug pin 18 into each contact displaces the tongues 11 into flat side extensions 7 in each aperture. To prevent the contacts being pushed out of the apertures by the insertion of the pins, a ball 20 or a pin is inserted between the tongues 11 of each contact adjacent the shoulders 9.
Patent GB-626536-A (GB)
Title: Improvements in or relating to the production of moistureproof heat-sealable sheet wrapping material
IPC: C08J7/052
Filed: 1947-02-14
Abstract: 626,536. Compound sheet material. BRITISH CELLOPHANE, Ltd. Feb. 14, 1947, No. 4411. Convention date, Feb. 19, 1946. [Class 140] A continuous moisture-proofing coating consisting essentially of a vinylidene chlorideacrylonitrile copolymer is anchored to a non- fibrous base film of regenerated cellulose by an intermediate layer comprising a heat-hardened alcohol-modified methylol melamine waterinsoluble thermosetting resin and nitrocellulose, the ratio between the resin and the nitrocellulose being within the range 20: 80 to 75: 25. The modifying alcohol is preferably a monohydric one containing from 3 to 8 carbon atoms, n-butyl alcohol being preferred. The resin composition layer may be obtained by applying a coating of a solution in an organic solvent of monomeric or incompletely condensed alcoholmodified methylol melamine and nitrocellulose which may contain an acidic condensing agent such as maleic acid or p-toluene sulphonic acid, further condensation of the former to a heathardened form taking place during drying, as by exposure to hot air. The vinylidene chloride-acrylonitrile copolymer coating may also be applied in the form of a solution in-an organic solvent. Definitions of the term " moisture-proof" and a description of the method of testing the heat-seal bond strength are given. Specifications 601,926, 622,481 and U.S.A. Specification 2,278,415 are referred to.
Patent GB-198645-A (GB)
Title: Improvements in and relating to processes of manufacturing sulphate of chromium
IPC: C01G37/08
Filed: 1923-02-15
Abstract: Iron is separated from the solutions of chromium and ferric sulphates obtained by treating chromite with chromic and sulphuric acids, by adding an alkali sulphate, such as aluminium sulphate, and concentrating the solution until the boiling-point reaches 150 DEG C.  A double salt such as ammonium ferric sulphate separates out and is removed.  The excess of acid remaining is neutralized with lime, leaving a solution of normal or basic chromium sulphate.  The double salt may be treated with lime or soda to recover the alkali sulphate. Reference has been directed by the Comptroller to Specification 17672/12.
Patent GB-627558-A (GB)
Title: Improvements in and relating to radio equipments
IPC: H04B1/38
Filed: 1946-02-13
Abstract: 627,558. Aerial coupling arrangements. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Feb. 13, 1946, No. 4513. [Class 40 (v)] In an U.H.F. pulse-operated radio equipment comprising transmitting and receiving triodes connected by transmission lines to a common aerial, the pulsing circuit which drives the transmitting oscillator supplies positive pulses to the cathode of the receiving triode to block the receiver during transmission periods. As shown, a radar apparatus comprises a triode re-entrant cavity transmitting oscillator 1 coupled by an adjustable length feeder 3 to an aerial 6. The receiver 2 comprises a mixer valve 20 tuned by a grounded cavity 19 connected to the grid and coupled by capacitance 24 to the cathode. The cavity is connected by an adjustable feeder 4 to the same aerial. A pulsing circuit 35 which drives the transmitting oscillator also applies positive pulses to the cathode 21 of the receiving triode to block the receiver during transmission periods. The aerial feeders are each an odd number of quarter wavelengths long and are terminated by small coupling loops 38, 31 which when the valves are blocked effectively short-circuit the feeder and reflect a high impedance at the aerial terminals.
Patent GB-1387581-A (GB)
Title: Fire-resistant structures containing intumescent material
IPC: E04B1/94
Filed: 1971-02-12
Abstract: 1387581 Laminated intumescent structures NATIONAL RESEARCH DEVELOPMENT CORP 12 May 1972 [12 Feb 1971] 4553/71 Heading B5N [Also in Division E1] A fire-resistant structure for use as a door, partition or cladding comprises a framework 4 containing intumescent material 6 and sandwiched between facing members 1, 2 by means, e.g. a glue 5 which loses its adhesive property on heating, whereby a fire will cause one facing member to fall away and the material 6 to intumesce and form a foamed mass 7, 8. The glue may be an intumescent paint and may be coated on the inner faces of members 1, 2 and the walls 9 to fix the material 6 which may be powdered. Members 1, 2 may be of plywood and structure 4 may be an "egg-crate" or honeycomb of wood, paper or cardboard.
Patent GB-994586-A (GB)
Title: Improvements in or relating to sealing arrangements for rotary piston internal combustion engines
IPC: F01C19/10
Filed: 1963-02-05
Abstract: 994,586. Rotary-piston engines. FICHTEL & SACHS A.G. Feb. 5, 1963 [Feb. 8, 1962], No. 4702/63. Heading F1F. In a rotary-piston internal combustion engine of the trochoidal n and n+1 lobe type comprising a piston 1 of substantially triangular shape and a housing having a two-lobed inner peripheral surface 11, a radial sealing strip 2 (Figs. 1, 3), or a pair of radial sealing strips 3 (Fig. 4), is lodged in axially-extending slots 4 at each corner of the piston, clearance being provided in the slots to permit each strip to pivot about either of the edges 5, 6 and to allow gas in adjacent working chambers 12, 13 to exert pressure on the inner surfaces of the strips whereby the strips are pressed outwardly, against surface 11. The strips may be also pressed outwardly by a compression spring 14 in each slot, a ball 15 being placed between the spring and the pair of strips 3. In a modification (Fig. 2, not shown) a sealing strip similar to that shown in Fig. 1 has a pair of edges in contact with surface 11.
Patent GB-615513-A (GB)
Title: Improvements in the manufacture of superphosphates and compound fertilizers
IPC: C05B19/02
Filed: 1940-03-13
Abstract: <PICT:0615513/III/1> In the manufacture of fertilizers of or mainly of superphosphates, dry powders or finished products just made are re-circulated back, e.g. at 3 and 3a into the viscous mass, e.g. of sulphuric acid, phosphoric acid, lime, phosphate, &c. issuing continuously or intermittently from the mixer 1 and still reacting, the mixture then being further worked in a drying, crystallizing and cooling apparatus 27, 28, preferably heat-insulated at 5.  The final product, which may include other fertilizing substances is in a state of subdivision dependent upon the dryness &c. of the recirculated material.
Patent GB-608890-A (GB)
Title: Improvements relating to water softening apparatus
IPC: C02F1/42
Filed: 1946-02-15
Abstract: 608,890. Interconnected valves. RAINSFORD & LYNES, Ltd., and LYNES, R. K. Feb. 15, 1946, No. 4758. [Class 135] [Also in Group I] A water-softening apparatus of the base-exchange type is provided with five valves constituting a single control unit, the simple movement of a member to four consecutive positions governing the desired sequential opening and closing of the control valves. In the construction shown, a chamber 10 for softening medium is provided with connections 12a, 13a to a valve control unit 14 which is also connected to a main supply pipe and a service pipe. The unit is in two parts 14a, 14b, formed with cavities for five spring-pressed ball valves 18. The cavities in the part 14a contain five tappets 21, each of which opens a valve when the inner end of the tappet is engaged by a cam on a rotatable disc 22b. The disc has two cams 22, 22a, and is provided with a pointer 22d so that it may be brought successively into positions in accordance with instructions on a plate 24. When the pointer is at the mark " Service," valves in chambers 14c, 14f are opened so that the hard water flows through the softener to the service pipe. When the softener is exhausted, the pointer is turned to the mark " Flush," in which position the valves in chambers 14c, 14f are closed and valves in chambers 14d, 14g are opened, whereby the softener is back-flushed with water which is discharged through a drain pipe 29. On completion of the flushing operation the pointer is brought to the mark "Salt," in which position the valves in chambers 14d, 14e are opened by means of the wider cam surface 22 and water drains therethrough to the drain pipe. The closed cap 11 of the softener is removed and salt or other regenerating substance is introduced. The cap is refitted. and the pointer brought to the mark " Wash." Valves or chambers 14c and 14e are opened and water passes down through the softener and salt to regenerate the softening material. A screw-down valve 30 may be provided to prevent waste of water in the event of the ball valves in chambers 14d and 14e failing to close properly, the valve 30 being closed during normal use of the apparatus.
Patent GB-313894-A (GB)
Title: Improvements in hair-drying apparatus
IPC: A45D20/44
Filed: 1928-02-15
Abstract: 313,894. Cooper, C. A. Feb. 15, 1928. Air-douches.- Apparatus for drying the hair comprises a shell a, substantially covering the head, and a number of nozzles b projecting thereinto through which hot air is delivered from a heater and fan c, d. The air may be withdrawn through an aperture f by a fan f<1>, the aperture f being also adapted to receive long strands of hair. Control of the heater and the fans is effected by a device e mounted on the member a or independently thereof. The shell a contains a curved plate g of rubber or the like having tongues g' contacting with the head along the lower edges ot the hair. The head is enclosed, at the front and sides respectively, by a hinged arcuate plate i having a rubber lining j, and by rubber lined flaps h adapted to be swung outwards about vertical hinges on their near edges. In a modification the members h, i are replaced by an annular rubber sheet lined with rubber tubing and adapted to be slipped over a beading on the shell a. In order to give a whirling motion to the air supplied, the nozzles b may be provided with vanes or propellers attached directly to the nozzles or to supplementary nozzles secured thereto. A single small nozzle b<1> may be provided to lead hot air to the top of the head. The shell a may be provided with glass or celluloid windows k, which may be kept free from moisture by the use of auxiliary nozzles, and may contain one or more electric lights. The incoming air may be ozonated or perfumed. The apparatus is adjustably mounted on a pedestal or the like. The Provisional Specification describes a form of outlet for the air comprising a pair of arcuate plates connected by converging side-pieces, the curved ends of the plates fitting the forehead and having apertures or projecting tongues giving communication with the outlet pipes.
Patent GB-525082-A (GB)
Title: An improved means for lifting and loading sugar canes or other materials into wagons or other means of transport
IPC: E02F3/40
Filed: 1939-02-14
Abstract: 525,082. Grab-forks; loading appliances. HARBERD, E. H. (Henzell, O. M.). Feb. 14, 1939, No. 4828. [Classes 78 (iii) and 78 (iv)] For picking up loads in long lengths such as sugar canes from the ground without extraneous matter, and depositing them on vehicles, an endless-track vehicle carries uprights on which arms 2 slide by means of rollers a, b, and are raised and lowered by a winch 4. Widelyspaced U-shaped tines 6, 6a are pivoted at the outer ends of these arms and normally are held by the pawl 6b, Fig. 5, with the limbs 6a substantially horizontal. In this position they are backed by the tractor into the canes until a full load has been engaged. The fluid-pressure rams 9 are then operated to lower the pivoted arms 7 to confine the load while the arms 2 are raised by the winch. When over the vehicle to be loaded, the pawl 6b is released by a pull-cord thus allowing the tines to tip forward and discharge the load.
Patent GB-177936-A (GB)
Title: Improvements in indicators or recorders for educational or other purposes
IPC: G09B1/20
Filed: 1921-02-14
Abstract: 177,936. Gore, L. S. Feb. 14, 1921. Addition to 139,997. Blind persons, teaching and communicating with.-The device described in the parent Specification is modified by the addition of (1) a flat circular plate a<2> non-rotatably mounted on the supporting-rod f of the apparatus and provided with twenty-four small circumferential borings c<2>, d<2> and colouring, numbering, lettering, or symbols on its face or back; (2) similar colouring &c. on the duodecagonal plates a; and (3) an adjustable and detachable anchor-shaped strip or indicating- finger j with a removable head j<2>, rotatably mounted on the supporting-rod. The numbering and lettering may be in any position on the plates, but the colours and svmbols are in twelve defined spaces l, m bn the duodecagonal plates, and twenty-two spaces on the circular plate, the colours on the left-hand side of the plates being different from each other, but similar to those in the corresponding spaces on the right-hand side. The colours form mnemonics for the voicing of the vowel sounds, for example, the short i in pink and long e in green, and are indicated by pegs inserted into the corresponding circumferential boring, those on the left-hand side representing vowels preceding a consonant, and - those on the right-hand side the vowels following a consonant. The finger j forms by its direction and the presence or absence of its curved upper part j<2> mnemonics for the voicing of consonants. The device may also be used for teaching the alphabet, numerals, hours and half-hours, months of the year, points of the compass, and for indicating designs for knitted or other hand-made fabrics, and is intended for use by a blind pupil or instructor.
Patent GB-725959-A (GB)
Title: Improvements in and relating to control devices for the thermo-electric power plantsof tractive vehicles
IPC: B60L50/10
Filed: 1953-02-24
Abstract: 725,959. Transmitting mechanical power. SCHWEIZERISCHE LOKOMOTIVUND MASCHINENFABRIK. Feb. 24, 1953 [March 15, 1952], No. 5121/53. Class 38 (4). To avoid the necessity of separate tractiveeffort-limiting starting resistors connected in series with the generator field regulator resistor in an automatic control system for a Diesel electric locomotive, of the kind wherein, for each position of the fuel lever, the prime mover is regulated to constant speed and power by an engine-driven governor acting on the fuel intake and, through a fluid-pressure servomotor, on the generator field regulator, the regulator is provided with sufficient resistance to enable it to perform also the duty of the starting resistors and driver-controlled means acting on the servomotor are provided for controlling the resistance range over which automatic control of the regulator is possible. In the arrangement shown in Fig. 2, a manual controller, not shown, carrying a lost-motion coupling 30, 33, which determines the travel allowed to the piston 17 of a servomotor 16 for the field regulator 15. The manual controller also controls the loading on the engine governor and, through links 24, 14 the fuel valve setting. In modified arrangements the limitation of the travel of the piston is effected by a pair of adjustable stops which either control auxiliary valves of the servomotor or modify the working of the main valve.