baber/WOPTO huggingface dataset:
Patent GB-616851-A (GB)
Title: Improvements relating to alternating current rectifiers of the selenium type
IPC: H01L21/14
Filed: 1946-09-13
Abstract: 616,851. Asymmetrically-conducting resistances. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd. Sept. 13, 1946, No. 27559. Convention date, Sept. 22, 1945. [Class 37] Selenium rectifiers are electrically formed by applying a continuous voltage in the reverse direction which increases as the rectifier resistance increases, the forming current being automatically interrupted when the voltage across the rectifier attains a predetermined value. In an embodiment, the rectifier element 3 is placed between electrodes 1 and 2, the former maintained at a temperature of between 60‹ and 70‹ C. by heater element 6. A suitable voltage is connected to terminals Band C, and the resulting current passes through resistance BR and the rectifier in the high resistance direction. Relay D, protected against voltage surges by resistance PR connected in the circuit when the supply is interrupted, interrupts the supply when the voltage across the rectifier attains a predetermined value.
Patent GB-279253-A (GB)
Title: Improvements relating to gas calorimeters
IPC: G01N25/42
Filed: 1926-11-03
Abstract: 279,253. Simmance, J. F. Nov. 3, 1926. Calorimeters.-In a gas calorimeter having a recording thermometer to register the rise in temperature of a liquid due to the heat of combustion of the gas, the differential expansion elements and the recording mechanism of the differential thermometer are mounted on a support which can be removed without interfering with the remainder of the apparatus. Improved means are also provided to ensure a constant supply of cold water to the calorimeter. The water is supplied by a pipe 1 and passes through a filter 3 into a vessel 2 provided with an overflow pipe 4 to ensure a constant head in the vessel. The vessel 2 has an extension 5 in which is the controlling orifice 6 for the water supply, arranged in the lower end of a removable tube 7 having lateral apertures for the ingress of water. From the orifice 6 the water passes through a pipe 12 to the cold water chamber 11 of the calorimeter. The calorimeter vessel 16 having the gas burner 15 at its lower end is provided with an enclosing casing 17 having a cover 18 with an extension 19 carrying the recording mechanism 20. This mechanism is actuated by a pair of U-shaped bimetallic expansion elements 21, 23, the element 21 being secured to the cover 18 and immersed in the hot water chamber 22 while the element 23 is immersed in the chamber 11. The movement of the recording arm depends on the differential expansion of the elements 21, 23. By removing the casing 17 the elements 21, 23 and the recording mechanism can be withdrawn without disturbing the remainder of the apparatus. Specifications 115,915 and 189,665 are referred to.
Patent GB-1061562-A (GB)
Title: Posts for supporting clothes lines and the like
IPC: D06F53/04
Filed: 1962-07-18
Abstract: 1,061,562. Clothes posts. B. HOLLAND. Oct. 17, 1963 [July 18, 1962], No. 27582/62. Heading A4U. A post for supporting clothes lines has a solid part 2 and an upper hollow part 1 provided with a slit 5 and internal guides 6 for pulleys 7, a third pulley 8 being fixed at the top of the guide inside the post and a halliard 10 arranged over pulley 8 and reeved about a winch 4 so that the pulleys 7 which are attached to the halliard 10 can be moved up and down the post. Each pulley 7 has attached to it a swivel eye or hook 15 which extends through the slit 5 and supports a clothes line 16.
Patent GB-1581276-A (GB)
Title: Loading tape cassettes with tape
IPC: G11B23/113
Filed: 1977-07-01
Abstract: To increase the operating speed, a film web (2), provided with a recording coating, is fed to a cutting device (3) and is cut by means of the latter into a multiplicity of tapes (4). The tapes (4) are deflected and wound simultaneously at approximately the cutting speed into a multiplicity of tape cassettes (7) arranged next to and beneath one another. The tapes (4) are expediently directed in an alternating sequence into two working levels and fed to the tape cassettes (7) assigned to these working levels. The process is suitable in particular for magnetic-tape cassettes. <IMAGE>
Patent GB-652604-A (GB)
Title: Multiple selection pattern mechanism
IPC: D04B9/26
Filed: 1946-09-14
Abstract: 652,604. Knitting-machines. JACQUARD KNITTING MACHINE CO., Inc. Sept. 14, 1946, No. 27639. Convention date, Sept. 27, 1945. [Class 74 (ii)] A pattern mechanism is of the Jacquard type and is characterized in that each knitting element controlled by the pattern may respond in more than one manner to the finding by its controlling devices of a pattern calling agency. In an arrangement applied to a circular knitting- machine a pattern drum 7 has longitudinal slots 8 spaced according to transverse rows of holes in a paper pattern 6, and is rotated by a Geneva wheel 36 through gears 37. The wheel 36 advances the drum 7 twice the pitch of the slots 8 for each cycle of knitting operations, presenting to each feeler 15 on a pivoted lever 17 two rows of the holes. If the feeler 15 finds a hole in the second row, it advances the lever 17 against a spring 22, the pitch of slots 8, if in the first row, twice this pitch. The ends of the levers 17 advanced are acted upon by cams 42, 43, revolving about the needle cylinder 2, and the levers 17 are depressed to operate pivoted levers 26, each of which raises jacks 16 beneath the knitting elements. The cams 42, 43 turn the levers 17 to raise the feelers 15 clear of the slots 8 and hold them by their projections 29 until they slip from the trailing end of the cams and are returned by the springs 22 into position with the feelers 15 pressing on the pattern 6. If the drum 7 is advanced three or more slots per cycle, a corresponding number of cams 42, 43 will be required. The cams 42, 43 may be set side-by-side, followed by a cam to return the jacks 16 or may be separated and may each have a following cam to return the jacks. Identical pattern mechanisms may be arranged round the needle cylinder, each having a drum and rows of feelers and controlling instruments as above. Two feeds may be served by a single operation of a pattern mechanism section.
Patent GB-339980-A (GB)
Title: Improved protractor
IPC: G01B3/56
Filed: 1929-09-11
Abstract: 339,980. Brimfield, H. E. Sept. 11, 1929. Protractors. - A segment, bearing scales, is fixed to one of a pair of radial pivoted arms, the joint carrying a point to engage the work, and the second arm being adapted to move over the segment and be set by the engagement of a screw or spring clip with holes or grooves in the segment. In the form shown, the segment A fixed to the radial arm D is supported at the other end by the arm H. The radial arm C, which may be clamped to the segment by the screw F, and the arm D carry spring points G1, G2 fixed to or slidable along the arms. In a modification, a large protractor may be made portable by making the segment hinged or detachable. According to the Provisional Specification, the protractor may have spring feet to keep it normally raised from the work and the radial arms may extend beyond the segment and carry scales.
Patent GB-288909-A (GB)
Title: Improvements in and relating to knife handles
IPC: B26B11/00
Filed: 1927-10-18
Abstract: 288,909. Altenbach, O. Oct. 18, 1927. Pocket and like knives.-A knife handle has a hollow bolster 4 containing a flexible spring measuring tape 5<a> coiled around a pin 5, an opening 6 being provided for drawing out one end of the tape. The tape instead of being of spring metal may be flexible and have separate spring coiling means. The tape may be coiled on a pin carried in a recess on the outside of the knife handle which may be fitted with a slidable or hinged detachable bolster or a flexible cap which may have an opening for the end of the tape. The invention may be combined with the knife handles described in Specifications 286, 581, 287,820, and 297,584.
Patent GB-298560-A (GB)
IPC: C11D1/22
Filed: 1928-09-27
Abstract: 298,560. B÷hme Akt.-Ges., H. T. Oct. 11, 1927, [Convention date]. Grant of Patent opposed. Emulsions, making.-Preparations for use in making emulsifying agents and solvents are obtained by mixing an aromatic sulphonic acid, preferably having an aliphatic side chain of at least three carbon atoms, with a true sulphonic acid obtained from a fatty acid containing more than 8 carbon atoms. The true sulphonic acids may be prepared by treating the fatty acids with sulphuric acid in the presence of aromatic acid chlorides or anhydrides. In an example, a sulphoacid prepared from oleic acid by sulphonating in the presence of acetic anhydride is mixed with di - iso - propylnaphthalenesulphonic acid. Hydrocarbons and halogenated hydrocarbons may also be added. When used for the treatment of textiles, the latter are not only readily wetted but are rendered soft.
Patent GB-813449-A (GB)
Title: Improved monofuel composition comprising propyl nitrate and soluble nickel salt
IPC: C06B23/00
Filed: 1955-09-29
Abstract: Monofuels or monopropellants for reaction motors, jet-propelled devices, &c., are made by adding to propyl or isopropyl nitrate a nickel salt soluble therein, which salt decomposes when heated in the combustion chamber to give finely divided nickel particles uniformly throughout the chamber.  Suitable salts are nickel carbonyl, acetyl acetonate, diisopropyldithiocarbamate and dinormalpropyldithiocarbamate.  The salt, calculated as metallic nickel, is present in amount from 0.02 to 1 per cent by weight of the nitrate.  The addition allows smaller combustion chambers to be used.
Patent GB-812665-A (GB)
Title: Improvements in or relating to the production of corrosion-resistant coatings on magnesium surfaces
IPC: C23C22/24
Filed: 1957-09-04
Abstract: An aqueous solution for producing a chromate conversion coating on a magnesium or magnesium-base alloy surface has a pH of 0.1-0.7 and contains 15.25 g/l hexavalent chromium (expressed as CrO3), at least 20 g/l chloride ion, and 0.8-1.5 grams of nitrate (expressed as NaNO3) per gram of chloride.  The solution is used at a temperature of 60 DEG -100 DEG F., and is replenished so as to maintain a normality of 0.4-1.0 N when titrated against an alkali using Brom cresol green as indicator. Hexavalent chromium may be present in the solution as chromic acid and ammonium, sodium and potassium chromates and dichromates; chloride may be present as hydrochloric acid, sodium chloride and potassium chloride; and nitrate may be present as nitric acid and ammonium, sodium and potassium nitrates.  The coatings are rinsed with dilute chromic and/or phosphoric acid if they are to serve as a basis for paint, lacquer, enamel, japan or the like.  The two specified magnesium-base alloys contain (i) Al 3 per cent, Mn 0.3 per cent and Zn 1 per cent, and (ii) Al 5.3-6.7 per cent, Mn at least 0.15 per cent, Zn 2.5-3.5 per cent and Cr, Cu, Fe, Ni, Si together at most 0.3 per cent.
Patent GB-924805-A (GB)
Title: Differential locking device
IPC: F16H48/22
Filed: 1961-08-02
Abstract: 924,805. Differential gears. J. A. MISENER. Aug. 2, 1961 [Aug. 22, 1960], No. 27998/61. Class 80 (2). A limited slip differential of the bevel gear type comprises wedge blocks 22 slidably mounted on the pinion shaft 21 of a driving casing and frictionally engaging the ends 18 of driven shafts 8. The wedge blocks have cooperating faces 23 with pockets 26, 27 containing springs 26 urging the blocks into frictional engagement with the shaft ends 18. The faces 23 of the blocks are recessed to provide a bore freely receiving the pinion shaft 21.
Patent GB-734925-A (GB)
Title: Improvements in or relating to mechanical pencils
IPC: B43K21/20
Filed: 1951-11-29
Abstract: 734,925. Pencil holders.. RODI & WIENENBERGER AKT.-GES. Nov. 29, 1951 [Aug. 20, 1951], No. 28036/51. Class 146(3). A propelling pencil is of the type in which the lead is advanced by clamping tongs closed by a clamping sleeve longitudinally slidable between stops which limit its forward and backward movement. As shown, the front stop is formed by a shoulder 17 on a sleeve 4 which guides the clamping sleeve 14, while the rear stop is formed by the lower edge of a member 19 secured to the sleeve 4. The clamping tongs 16 are secured to the end of a lead guide-tube 13, the tube 13 being limited in its rearward movement, under the influence of a spring 22, by an inwardly bent shoulder portion 21 of the member 19 co-operating with a ring 20 on the tube 13. The tube 13 is advanced bv pressure on a cap 12 secured to a magazine 11. The front ends of the tongs 16 are flat for engagement, during lead feeding, with the rear end of an additional clamping member 25 having tongs 27 which support a lead firmly during writing.
Patent GB-187958-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B57/10
Filed: 1922-10-16
Abstract: 187,958. Michel, H. Oct. 28. 1921, [Convention date]. Addition to 166,559. Two - stroke - cycle engines ; driving- gear. - An engine, with oppositely-moving pistons b working in a fixed cvlinder a, and driving the shaft h through rollers c. works on the Diesel cycle. The rollers move in a cam groove in the fly-wheel d fast on the shaft. A second set of rollers m bear on an auxiliary cam groove, and cause the pistons to follow the movement of the cam at starting. Scavenging air enters by the ports p and exhaust passes out through the ports r. The fuel is injected at l.
Patent GB-1045714-A (GB)
Title: Photosensitive diazotype product developable by heat and its process of preparation
IPC: G03C1/60
Filed: 1963-07-16
Abstract: 1,045,714. Heat developable diazotype materials. ETABLISSEMENTS BAUCHET & Cie. July 16, 1963 [July 19, 1962], No.28067/63. Heading G2C. A heat-developable diazotype material comprises a support, a layer containing a diazonium compound, an azo coupler and an acid stabilizer and an overcoat containing as a heat-sensitivedeveloper urea, thiourea or derivatives thereof N-substituted by aliphatic radicals with up to 5 carbon atoms dispersed in an organic polymeric binder so that the particle size is less than 30 microns. Specified developers are urea, thiourea, allyl-urea, methylthiourea, allylthiourea and N- allyl-N'-hydroxyethylthiourea which are preferably dispersed in polyvinyl formal polyvinyl butyral, cellulose acetate or ethyl cellulose. A developing accelerator (i.e. a compound lowering the melting point of the developer) may be added to the overcoat. Specified developing accelerators are mineral salts amides, sulphonamides, sulphones or a second developer. The light sensitive layer may also contain thiourea as an anti-oxidant to protect the paper support against yellowing.
Patent GB-759336-A (GB)
Title: Improvements in or relating to speed regulating means for gramophone motors
IPC: H02P7/26
Filed: 1954-09-29
Abstract: 759,336. Gramophones. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 29, 1054 [Oct. 2, 1953], No. 28091/54. Class 40(2) A gramophone having a spring motor driving both the turntable (not shown) and a dynamo 2 supplying current to an amplifier 3 is provided with electrical means for increasing the load on the dynamo 2, should the motor speed increase above a certain value, in such manner that the rate of dynamo load increase is greater than the rate of motor speed increase, thereby stabilizing the motor speed. As shown the means comprise a diode valve 4 shunted across the amplifier 3 and which is non-conductive at speeds of the motor 1 below that required by the turntable, due to the predetermined adjustment of a battery 5. Above the required speed the valve conducts and creates so heavy a load on the dynamo that the latter retards the motor to the initial adjustable speed. The means alternatively may be resistors (not shown) having a negative temperature coefficient of resistance and connected in parallel with the amplifier. The amplifier may comprise transistors.
Patent GB-914233-A (GB)
Title: Improvements in or relating to rangefinders
Inventor: WHYTE JAMES NORWOOD
IPC: G01C3/08
Filed: 1960-08-15
Abstract: 914,233. Range-finders. WAR DEPARTMENT, SECRETARY OF STATE. Sept. 28, 1961 [Aug. 15, 1960], No. 28152/60. Class 97 (1). [Also in Group XL (c)] A range-finder comprises an objective optical system which produces a pair of images of the object whose distance is to be measured, a rotating reflector which sweeps the images projected thereon across a detector which produces an electrical pulse at the passage of each pulse (see Group XL (c)). The time interval between pulses being a measure of the required range. The optical objective system comprises a pair of isosceles right-angled prisms 1a each having a silvered surface 2 arranged either as shown or angled to each other (Fig. 3, not shown) in which case the images coincide at the detector when the object is at a predetermined range. An optical system using plane mirrors is also described (Fig. 2, not shown). The rotating reflector 5 may be multisided (Fig. 4, not shown).
Patent GB-271737-A (GB)
Title: Improvements in weighing scales
IPC: G01G21/00
Filed: 1926-11-09
Abstract: 271,737. Marks, E. C. R., (Toledo Scale Co.). Nov. 9, 1926. Links; bearings.- In a weighing scale two elements of the weighing mechanism are connected one to the other for relative angular movement by means of a pin or projection on the one element engaging a parallel-sided opening in the other element, and both sides of the opening provide a surface with which the pin or projection can engage in rolling contact, the sides of the opening being spaced apart to a slightly greater extent than the diameter or width of the pin and being disposed substantially at right-angles to the direction of the normal or main force or forces which the elements transmit or sustain. As applied to a counter scale the depending leg 7 of the pan support and the fixed post 17 are connected by a link 8 provided at the ends with rectangular openings 13, 19. Cylindrical pins 14, 20 extending across kerfs in the leg and post, and retained by clips 15, pass loosely through the rectangular openings. If the load is placed out of centre on the pan thus producing a pull or a thrust on the link, the pins 14, 20 will be in rolling engagement with the sides of the rectangular slots during the final movement of the scale to its equilibrium position. The pivotal connection may be used for joining tension rods and levers or pivotally mounted rack rods.
Patent GB-591441-A (GB)
Title: Improvements in starter switches for fluorescent electric lamps
IPC: H05B41/06
Filed: 1945-10-26
Abstract: 591,441. Thermal switches. REVO ELECTRIC CO., Ltd., and FELTON, A. E. Oct. 26, 1945, No. 28262. [Class 38(v)] The radio-interference suppressing condenser shunting the starter switch of a fluorescent lamp is of cylindrical form surrounding the contact - members c, d, the former of which is bimetallic and heated by a coil e as described in Specification 591,440.
Patent GB-1107423-A (GB)
Title: Manufacture of woven cloth for endless belts for paper making machines
Inventor: EWEN IAN ELRICK
IPC: D21F1/10
Filed: 1964-07-09
Abstract: The warp knuckles on the machine side of a wire fabric are ground flat and the whole fabric is then chromium plated.
Patent GB-447179-A (GB)
Title: A device for the crowning and trimming of beet and the like
IPC: A23N15/04
Filed: 1935-10-14
Abstract: 447,179. Topping beet &c. WATSON, J., Milford, Charleville, Cork, Irish Free State. Oct. 14, 1935, No. 28282. Convention date, Feb. 13. [Classes 5 (i) and 6 (iii)] The root to be topped is held on a support composed of bars 1, 1<a>, spaced apart to permit the passage of the knife 3 and shaped as shown at 1<b> to receive the root. The knife 3 is fulcrumed in a slot at the lower end of a bracket 4 the knife also being provided with a slot and a pin 5 passing through the slots. The device is carried by legs 6 and the knife has a wooden handle 3b. A spring 7 returns the knife to its original position after each cutting stroke.
Patent GB-356953-A (GB)
Title: Improvements in or relating to chairs, settees, sofas, and like articles of furniture
IPC: A47C7/35
Filed: 1930-09-23
Abstract: 356,953. Spring upholstery. TASKER, A., Cavity Works, 14, Village Street, Liverpool. Sept. 23, 1930, No. 28372. [Class 52 (iv).] The wire meshing covering m of an upholstery spring assembly for a seat is secured in known manner at all four edges to the surrounding frame by means of rods n threaded through the mesh and stapled to the frame. The assembly may be made as a self-contained unit or built into the seat.
Patent GB-222345-A (GB)
Title: Improvements relating to inverted incandescent gas burners for lighting purposes
IPC: F23D14/30
Filed: 1924-03-12
Abstract: 222,345. Smith, F. March 12, 1924. Gas - burners; burners, materials for. - A bellshaped fitting c rests on feet d on the corona e of an inverted gas-burner a and is closed at the upper end by a hit-and-miss air regulator p, having an annular projection r and an operating-arm q, so thatthe air supplied to the burner is admitted through spaces f between the feet d and heated in passing through the fitting c. The burner may be provided with one or more nozzles g. In a modification, the fitting c is formed with radial projections, having air-inlet apertures at the base, the lower edge of the fitting bearing on the corona e. The mixing-chamber of the burner is preferably made of aluminium and the corona and fitting of aluminium, brass or fire-resisting glass.
Patent GB-1179957-A (GB)
Title: Method and Apparatus for Concentrating Bulk Materials.
Inventor: GUPALO JURY PAVLOVICH
IPC: B03B5/34
Filed: 1967-06-20
Abstract: 1,179,957. Centrifugal separators. INSTITUT KORJUCHIKH ISKOPAEMYKH. 20 June, 1967, No. 28410/67. Heading B2P. An apparatus for concentrating bulk material, e.g. coal or other minerals, by separating the particles of the material according to a preselected density, under the action of centrifugal force arising during movement of the particles along a curvilinear path in a curvilinear flow of separating medium e.g. water or air, the density of which is lower than the mean density of the light fraction of the material being separated, comprises a non rotatable casing 1, an endless screw 7 rotatable within the casing by means of a drive 8, inlets 2, 3 respectively for separating medium and material to be treated, and outlets 4, 5, 6 respectively for the separating medium, heavy fraction and light fraction. In operation, water is fed tangentially via the inlet 2 and is directed along the helically shaped passage defined by the screw and the internal wall of the casing. The material to be treated which is charged through the inlet 2 enters the helical passage and starts moving with the water towards the water outlet 4. Due to the effect of centrifugal force, the light fraction moves towards the screw axis and is carried along by the flow of water towards the outlet 6. The heavy fraction settles to the bottom of the casing and is conveyed by the screw towards the outlet 5. An oscillatory motion may be imparted to the rotating screw in a plane at right angles to its axis of rotation. Alternatively, the casing may be oscillated. Two or more apparatus may be arranged in parallel to be rotated about an axis parallel to the axis of each screw.
Patent GB-337904-A (GB)
Title: Improvements in or relating to alarm devices
IPC: G08B13/24
Filed: 1929-09-19
Abstract: 337,904. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Sept. 19, 1929. Burglar and l i k e alarms. - An alarm device for safeguarding rooms and other spaces comprises a transmitter 1 and a receiver 2 for ultrashort waves, of the order of one metre, arranged in a room so that a definite oscillatory condition arises which is varied by anyone entering the room, the reception-intensity being at once affected and an acoustic or optical alarm 3 operated. The receiver is preferably arranged at a point where normally the reception-intensity is a maximum.