baber/WOPTO huggingface dataset:
Patent GB-931256-A (GB)
Title: Stepping drive for a rotary switch
IPC: H01H3/42
Filed: 1960-08-25
Abstract: 931,256. Snap-action switches. MASON ELECTRIC CORPORATION. Aug. 25, 1960 [June 6, 1960], No. 29368/60. Class 38 (5). [Also in Group XXIV] A step-by-step drive to a shaft 38 of a rotary electric switch comprises pawls 54 pivotally mounted on pins 82 secured between discs 78, which are caused to oscillate, and during the driving stroke the pawls 54 are positively forced into engagement with the teeth 72 of a ratchet wheel 52 on the shaft 38. A driving shaft 28 carries an eccentric circular cam 62 which engages a slotted cam follower 58 pivotally mounted at one end on a fixed pin 60 and carrying at its other end a coupling pin 74. Inner and outer discs 78, 68, respectively, are rotatably mounted on the driven shaft 38, the discs 68 being grooved at 76 for driving engagement with the pin 74 and the discs 78 being grooved at 80 for clearance therewith. Pins 86 are secured between the discs 68 and pass through clearance holes 88 in the discs 78, the pins 86 bearing on the pivoted ends of the pawls 54 to force them into engagement with the teeth 72 on the driving stroke. The driving oscillation of the cam follower 58 is therefore transmitted through the pin 74, discs 68, pins 86 and pawls 54 to the ratchet wheel 52. The discs 78 merely act as a carrier for the pawls 54.
Patent GB-262105-A (GB)
Title: Improvements in necktie-fasteners
IPC: A41D25/02
Filed: 1926-11-22
Abstract: 262,105. Schmitt, E. Nov. 30, 1925, [Convention date]. Necktie retainers.-The necktie is attached to a base plate A having an open-ended slot a at its upper end and is adjustable in height relatively to the collar stud by passing a slot h in a slide B adapted to slide in the base plate A over the head of the collar stud. The slide B is locked to the base plate A in adjusted position by the engagement of a tongue g on the bottom of the plate A in one of a series of apertures formed in the slide. The tie may be sewn to the base plate A by means of the eyes d, e, or a fastener on the back of the tie may be engaged with an eye or loop in a metal strip adapted to be secured in the eyes d.
Patent GB-681128-A (GB)
Title: Manufacture of industrial diamonds
IPC: C01B31/06
Filed: 1950-12-05
Abstract: Industrial diamonds are produced by mixing molten iron with carbon which has been prepared from lignin and has a purity of at least 99.2 per cent and which has been heated to near to its volatilization temperature, and rapidly chilling the molten mixture in a closed container, the heating, mixing, and chilling operations being carried out under non-oxidizing conditions.  The <PICT:0681128/III/1> carbon 12 is heated in induction furnace 3 and iron, free from oxide, is melted in induction furnace 2.  The iron is poured into the carbon in furnace 3 and the mixture is allowed to stand for a few minutes before being poured into copper container 8, which is immediately closed by a clamped stopper 14.  Container 8 is removed from chamber 1, in which all preceding operations have been effected and which is under vacuum, and immersed in a refrigerant.  The cooled mass is separated from container 8, and is liquified in an induction furnace under vacuum, and the diamonds are sifted from the molten iron, cooled under vacuum, and cleaned first with hydrofluoric acid and then with a mixture of nitric and sulphuric acids.  The process may, however, be carried out under nomal or superatmospheric pressure.  To prepare the carbon the residual liquor from paper pulp manufacture is concentrated by evaporation, and the resultant thick paste is treated with weak acid to precipitate the lignin, which is filtered off, dried, and treated with turpentine, or an alcohol at about 60 DEG C to extract resinous impurities. the purified lignin is treated with a mixture of sulphuric and hydrochloric acids at below 100 DEG C and then with concentrated sulphuric acid at at least 200 DEG C.  The resulting carbon is treated with hydrofluoric acid, washed with distilled water and dried.
Patent GB-1123671-A (GB)
Title: Fluoroalkyl substituted cyclic imino ethers
IPC: C07D263/10
Filed: 1965-07-13
Abstract: The invention comprises compounds of the formula <FORM:1123671/C2/1> wherein n is zero or an integer from 1 to 15, m is 2 or 3 and each of the X radicals which may be the same or different is a fluorine, chlorine or hydrogen atom, and a process for preparing said compounds in which a fluorinated amide of formula <FORM:1123671/C2/2> wherein m and n and X have the above meanings, is treated with a base. Preferably at least one equivalent of base per mole of fluorinated amide is used; the temperature is suitably from 0 DEG  to 100 DEG  C. Examples describe the production of 2-pentadecafluoroheptyl-2-oxazoline, 2-(pentadecafluoroheptyl) - 5,6 - dihydro - 1,3,4 - oxazine and 2-pentafluoroethyl-2-oxazoline.
Patent GB-536816-A (GB)
Title: Improvements in or relating to variable pitch propellers and bearings therefor
IPC: B64C11/30
Filed: 1939-11-09
Abstract: 536,816. Variable-pitch propellers. HOOVER, W. S. Nov. 9, 1939, No. 29760. Convention date, June 13. [Class 114] [Also in Group XXXIV] In a propulsion unit comprising a pair of oppositely rotating co-axial propellers, the members 34, 76, for charging the pitch angles of the blades are coupled together by a ball thrust bearing 70 to ensure similar and simultaneous pitch changing movements of the two propellers. As shown, the propeller hubs 22, 26, are mounted on co-axial shafts 18, 16, driven in opposite directions through gearing 14, 15, 17. The rods 34, 76, are slotted and engage pins 36 on the propeller blades so that axial movement of the rods rotates the blades to vary their pitch. The forward ends of the rods 34, 76, are secured to pistons 32, 42, respectively. The piston 42 carries the inner race 40 of the bearing 70 and the outer race 38 is secured to the adjacent end of the rod 34. A governor 50 connects a conduit 52 either with a source of pressure or with a drain. The spaces 66, 58 behind the pistons 42, 32, are connected to the conduit 52 through passages 64, 60, 54, and 56, 54' respectively. Hydraulic pressure such as lubricating oil under pressure acting on the pistons 42, 32, increases the blade pitch. Reduction of the blade pitch when the conduit is.opened to a drain is produced by centrifugal force. Lubricant is led to the bearing 70 from the space 66 through a duct 68. Oil leaking through the bearing is trapped in an annular chamber 74 and a pump returns this oil to the space 66: The pump is carried by the piston 42 and its plunger 78 is reciprocated by a cam 80 formed on the outer race ring 38. In a modification, the connection between the rods 34, 76, and the propeller blades is a rack and pinion, and the piston 32 is arranged so that either side thereof can be opened up to pressure oil or to a drain.
Patent GB-1149895-A (GB)
Title: Disc brakes
Inventor: DEWAR DOUGLAS
IPC: F16D65/12
Filed: 1965-07-14
Abstract: 1,149,895. Brake disc. DUNLOP CO. Ltd. 1 July, 1966 [14 July, 1965], No. 29764/65. Heading F2E. A brake disc 1 for use as a rotor in an aircraft brake comprises a container of steel or the like formed from two annular shells 3, 4 and an annular core 2 formed from or containing beryllium. The core preferably comprises eight part annular segments, each segment being spaced from adjacent segments by abutment against means for securing the shells together, that is, rivets passing through holes 12 in the shells. The shells are also provided with radial slots 13 ending in apertures 14 to prevent cracking and distortion of the disc by the heat generated during braking. The shells are also formed with driving lugs 9. The core 2 may be secured to the container by brazing or casting.
Patent GB-320766-A (GB)
Title: Improvements in or connected with sound reproducers, musical instruments or the like
IPC: G10C5/00
Filed: 1928-10-16
Abstract: 320,766. Davis, W. E., and Brown, E. K. Oct. 16, 1928. Loud-speakers. - A piano, or piano-player, whose soundboard acts as the diaphragm of a loud-speaker, has its frame utilized as part of the circuit of a wireless receiving set. The frame may be the aerial or the earth of the set, and if the piano-player is electrically operated, the source of current used may also serve for the loud-speaker. The cabinets 1 and 2 house the batteries and receiving set respectively.
Patent GB-617587-A (GB)
Title: Caster structure
IPC: A47B91/02
Filed: 1946-10-08
Abstract: 617,587. Castors ; furniture adjustments. NALLE, C. R. Oct. 8, 1946, No. 29966. Convention date, Oct. 18, 1945. [Classes 52 (i) and 52 (iii)] [Also in Group VII] A castor adjustable vertically, comprises a floor engaging element A including an externally threaded a n d axially splined stem 1, a ferrule B including an elongated neck 6 having an axially splined opening to receive the stem 1 to prevent relative rotation, and a captive nut C rotatably mounted on the base 5 of the ferrule B, threaded to engage the threaded stem 1 and raise or lower the latter. The ferrule base 5 has upstanding prongs 11 to fix it to the furniture. The parts may be all die-cast. In a modification (not shown) the ferrule and associated means to attach it to the furniture are pressed from sheet metal stampings. The floor engaging surface may be either a glide or a wheel mounted on ball races on the stem 1.
Patent GB-721283-A (GB)
Title: New anthraquinone derivatives
Inventor: LODGE FRANK
IPC: C09B1/20
Filed: 1951-12-21
Abstract: The invention comprises dyes of the formula <FORM:0721283/IV (c)/1> wherein n is 1, 2, or 3, X is amino or alkylamino, and Y is hydrogen, acylamino, arylamino, or hydroxy.  They are made by heating a glycol of the formula H(OCH2CH2)nOH p  with an anthraquinone-2-carboxylic acid or halide thereof, already having X and Y in 1- and 4- positions or else having halogen or nitro in one or both of those positions which are replaced by X and Y by known methods.  Dispersions of the products in water, dye cellulose acetate and polyethylene terephthalate.  In examples, (1) 1-amino - 4 - hydroxyanthraquinone - 2 -carboxylic acid is reacted in presence of sulphuric acid with di- or tri-ethylene glycol, or its acid chloride is reacted with triethylene glycol without sulphuric acid; (2) 1-nitroanthraquinone-2-carboxylic acid chloride is heated with diethylene glycol and the product is reacted with isopropylamine in pyridine; (3) 1-amino-4-bromoanthraquinone - 2 - carboxylic acid chloride is heated with triethylene glycol, and the product is condensed with aniline; (4) 1-amino-4-nitroanthraquinone-2-carboxylic acid chloride is heated with diethylene glycol and the product is reduced with sodium sulphide; (5) 1-aminoanthraquinone - 2 - carboxylic acid is heated with triethylene glycol in presence of sulphuric acid; (6) 1-chloranthraquinone-2-carboxylic acid chloride is reacted with diethylene glycol and the product is condensed with ammonia.
Patent GB-152996-A (GB)
Title: Improvements in metal tiles
IPC: E04F13/12
Filed: 1920-10-23
Abstract: 152,996. Dezone, L. Oct. 23, 1920. Securing single tiles to surfaces.-Enamelled or otherwise decorated sheet-metal facing tiles of the kind having a marginal flange turned backwardly from the face, are secured to the backing by means of a securing-member c passing through a perforation b in the face of the tile and through a spacing-member e. The marginal flanges a<1> may be bent backwardly at a right angle or at an acute angle, and the interior space may be filled with heat-insulating material. If desired, when the tiles are used for stoves, apertures f may be provided in the marginal flanges a' for air circulation.
Patent GB-430218-A (GB)
Title: Improvements in or relating to feed pumps for the fuel injection pumps of internal combustion engines
IPC: F02M59/00
Filed: 1934-10-20
Abstract: 430,218. Fuel pumps. BOSCH AKT.- GES., R., 4, Militõrstrasse, Stuttgart, Germany. Oct. 20, 1934, No. 30078. Convention date, Oct. 20, 1933. [Class 102 (i)] A feed pump for a fuel-injection pump is mounted upon the casing 1 of the fuel injection pump and is driven by the same cam 18. The feed pump comprises a cylinder 10 and piston 15 loaded by a spring 16, and the piston is connected by a rod 14 to a member 12 loaded by a spring 13 and engaged by the cam 18. The pump is provided with suction and delivery lift valves and the springs 13, 16 effect the suction stroke. The manual operation of the pump is effected by a spindle 25, provided with a lug 27 engaging the member 12, and connected to the lever 26.
Patent GB-681333-A (GB)
Title: Improvements in or relating to electrical hair cutting machines
IPC: B26B19/28
Filed: 1950-12-11
Abstract: 681,333. Hair clippers. HAGEBEUKER, K. Dec. 11, 1950. No. 30228/50. Class 131 [Also in Group XXXV] An electric hair-cutting machine comprises two co-acting, toothed blades, one of which is stationary and the other is vibrated laterally by connection to one end of an intermediately-pivoted, armaturecarrying lever the other end of which carries two pole-pieces arranged one at each side, in their plane of movement, of a rectangular block permanent magnet, and vibrating in an arcuate path, across three pole-pieces of an electromagnet, all of the pole-pieces having arcuate faces, and the pole-pieces of the magnet being spaced apart a distance corresponding to the distance apart of the pole-pieces of the elec-- tromagnet. As shown, the pivoted lever 3, connected to the vibrating blade 1, is reciprocated by the successive attractions and repulsions of the pole-pieces 6, 6<SP>1</SP>, 6<SP>11</SP> of the electromagnet 7 for the pole-pieces 5, 5<SP>1</SP> of the permanent bar magnet 4 when the electromagnet is energized by alternating current. Rubber buffers 8, 9 assist the swinging movement of the lever and are adjustable, by screws 10, 11, in tapered bores in the wall of the housing 12 to cor-- respond with the periodicity of the alternating current. The electromagnet is ad-- justable relatively to the pole-pieces 5, 5' and is locked in adjusted position by screws 16, 17.
Patent GB-442958-A (GB)
Title: Improvements in roller shutters
IPC: E06B9/68
Filed: 1934-10-22
Abstract: 442,958. Preventing fires. DENNISON, KETT, & CO., Ltd., and MOSS, D. J., Kenoval House, Farmer's Road, Camberwell, London. Oct. 22, 1934, No. 30247. [Class 47 (ii)] Relates to roller shutters wherein the operation of a thermal element releases a spring drum which, by its rapid rotation, initiates the automatic closing of the shutter, and consists in arranging that the drum is operatively connected with the shutter only as a result of the rotation of the drum. As shown, the shutter 1 is mounted on a roller 2 rotatable on a spindle 3 under control of a counterbalancing spring 4. Mounted for rotation on an extension of the spindle 3 are a spring drum 7 and a disc 14, the latter carrying a pivot pin 20 to which are fixed a pawl 15 and an arm 22. The pawl co-operates with a ratchet wheel 13 on the roller 2, being held normally from engagement therewith by a spring, and the arm 22 is adapted to be engaged by one of a series of lugs 23 on the drum 7. The drum is held, with its spring wound up, by a cable 10 with a fusible link 12. When the link fails, the drum is rotated by its spring, a lug 23 engages the arm 22 to rock the pawl 15 into engagement with the ratchet wheel, and the roller 2 is driven to uncoil the shutter. In order to prevent operation of the spring drum when the shutter is already lowered, engagement of an arm 24 with the outer surface of the rolled shutter or of the roller is adapted so to control an arm 27 that the latter lies in the path of the lugs 23, so as to prevent rotation of the drum 7, when the shutter is lowered. The pawl 15 might be carried by the drum 7 and controlled by a cam. A suitable lever may be included in the cable 10 to reduce the tension exerted on the link 12 by the spring drum. In a modification, applied to a double shutter with a manual winding gear, a pawl is brought, by centrifugal force upon rotation of the spring drum, into engagement with internal teeth of a gear-wheel in mesh with a pinion on the main winding shaft of the winding mechanism.
Patent GB-1124427-A (GB)
Title: Improvements in or relating to agricultural machinery
Inventor: TOWNER FRANK RICHARD
IPC: A01D25/04
Filed: 1966-07-06
Abstract: 1,124,427. Flax-pullers, root-crop harvesters. SPERRY RAND Ltd. 9 Aug., 1967 [6 July, 1966], No. 30326/66. Heading A1F. [Also in Divisions B8 and F2] A cleaning device for a V-belt employed for lifting crops comprises a sheet 7 of flexible material e.g. neoprene mounted at an oblique angle to said V-belt 1 with a slot 8 in one side thereof shaped to fit against the sides and rear of the belt and thereby clean said belt on its passage therethrough. A conventional scraper, not shown, is used to clean the working face of the belt. A pair of such V-belts are installed in an agricultural machine (Fig. 1 not shown) in spaced parallel relation and inclined to the horizontal whereby crops entering the gap between said belts at the lower end thereof are gripped thereby and pulled from the ground as the machine continues forward. The belts are driven backwards at approximately the forward speed of the machine.
Patent GB-629745-A (GB)
Title: Improvements relating to methods of dephosphorizing iron and steel
IPC: C21C7/064
Filed: 1947-11-14
Abstract: In a duplex process of refining iron and steel there is added to the molten metal in the ladle a strong alkali, e.g., caustic soda, mixed with an oxidizing substance, e.g., iron ore.  Three parts caustic soda mixed with five parts haematite ore in bags or in the form of bricks may be added to the metal as it is poured into the ladle preferably at the intersection of the jet of molten metal and the bath when the ladle is one-third full.  The process may be applied to unkilled steel which should thereafter be completely refined.
Patent GB-617834-A (GB)
Title: Improvements in or relating to electric insulators
IPC: H01B17/50
Filed: 1946-10-11
Abstract: 617,834. Insulators. BULLERS, Ltd., and PERRINS, G. Oct. 11, 1946, No. 30365. Drawings to Specification. [Class 36] An electric insulator has two conductive coatings provided on the surface, one having a positive temperature coefficient of resistance and the other a negative temperature coefficient of resistance, the coatings being so arranged as to provide between them a resistance, the value of which is independent of temperature changes. The coatings may be in the form of conductive bands extending over the surface of the insulator between the metal electrodes, as described in Specification 617,833. Specification 527,357 also is referred to.
Patent GB-1093289-A (GB)
Title: Tray feed mechanism for cigarette-packaging machines
IPC: A24C5/356
Filed: 1965-07-16
Abstract: 1,093,289. Cigarette packaging machines. AMERICAN MACHINE & FOUNDRY CO. July 16, 1965 [July 30, 1964], No. 30369/65. Heading B8C. A tray feed mechanism for a cigarette packaging machine which has a feed hopper into which cigarettes are fed from trays having slidably removable bottom slats, comprises a cigarette level monitor, e.g. a photo-electric cell device, for attachment to the hopper, a uniplanar tray conveying structure situated above the hopper, and electro-pneumatically driven means whose operation is initiated by the cigarette level monitor, for positioning a full tray over the hopper, removing the bottom slat to allow cigarettes to fall from the tray into the hopper, replacing the slat into an empty tray, moving the empty tray rearwardly two index positions and then one index position rearwardly towards an exit point, while maintaining the trays at all times in an upright position and coplanar relationship. In the particular embodiment described, the full trays T 1 , T 2 , T n , are moved intermittently in the direction of the arrows T A . With a tray T 1  positioned over the hopper H, the bottom slat SS1 is withdrawn laterally in the direction SP and then forwardly in the direction ST. The previously emptied tray T e  is moved laterally in the direction T c  so that the slat SS1 is placed in it and is then moved rearwardly two positions to T e2 , while other empty trays T e , Te 2  are moved one position rearwardly. Limit switches ensure that each step is completed before the next is started. There is a hand lever for manual control of the steps, and a push button for by-passing the system to enable the packaging machine to run out those cigarettes remaining in the hopper.
Patent GB-364683-A (GB)
Title: Improvements in diaphragm mountings for acoustical apparatus
IPC: H04R9/04
Filed: 1930-10-10
Abstract: 364,683. Sound-reproducing devices. LANCHESTER, F W., Dyott End, Oxford Road, Moseley, Birmingham. Oct. 10, 1930, No. 30400. [Class 40 (iv).] The diaphragm 7, Fig. 1, of a sound reproducer moves without restoring force in an axial direction being mounted and centred by a rolling ring 15 of rubber or other suitable material, positioned between cylindrical seatings 14, 6, in conjunction with ancillary means such as a surround 17, ligatures, or a further rolling ring 15a. The seating 6 comprises the former for the moving coil 5 ; the rolling rings 15, 15a may work between suitable stops e.g. 20, 21. In a modification, a diaphragm 7, Fig. 2, actuated by a moving coil 5 operates into the throat 24 of a horn. The coil former 6 co-operates with two rolling rings 15a, 15b which prevent loss of acoustic pressure round the edge of the former 6, and centre and mount the diaphragm. One rolling ring may be replaced by ligatures. The rolling rings may provide damping. Specifications 27945/10 and 331,828, [both in Class 40 (iv), Telephones &c.], are referred to.
Patent GB-1075636-A (GB)
Title: Load supporting unit
Inventor: RAPSON JOHN EDWARD
IPC: B60V3/02
Filed: 1963-07-31
Abstract: 1,075,636. Air cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. July 24, 1964 [July 31, 1963], No. 30450/63. Heading B7K. A load supporting device, co-operating with a supporting surface 12, comprises spaced members 3, 4, preferably circular, connected by a bellows 2 or a pair of telescopic tubes to form a closed space to which pressurized fluid is supplied from a source 6 through a restricted orifice 5 in member 3. The fluid leaves the space through a further restricted orifice 10 in member 4 to form a supporting cushion in a plenum chamber 7 formed by an annular member 8. Ties 9 limit the extension and or lateral movement of the member 4. When passing over a depression the loss of pressure in the plenum chamber will cause the member 4 to be moved downwardly by the relatively higher pressure in the bellows chamber, thereby restoring the nominal clearance between the surface 12 and the bottom edge 11 of member 8. A group of six such supporting devices on a load platform is described.
Patent GB-159958-A (GB)
Title: Improvements in and relating to conducting leads for electrical apparatus
IPC: H01F27/40
Filed: 1919-12-05
Abstract: 159,958. British Thomson Houston Co., Ltd., (General Electric Co.). Dec. 5, 1919. Regulating transformers. -Arrangement and insulation of the tapping conductors of a transformer so that such conductors are spaced apart and oil can circulate freely. The tapping conductors 13 are arranged vertically in the recesses of a preferably corrugated cylinder 20 open at each end, and are held in position by a tangential insulating wrapping 12. The ends of the wires are attached to a terminal board 15.
Patent GB-1199778-A (GB)
Title: Flanged Lock Nut
IPC: F16B39/284
Filed: 1967-07-04
Abstract: 1,199,778. Lock-nuts. LAMSON & SESSIONS CO. 4 July, 1967 [6 July, 1966], No. 30760/67. Heading F2H. [Also in Division B2] A hexagonal lock-nut comprises a deformed conical portion 11 at one end and a flange 14 at the other, the nut being coated with lubricant. The lock-nut is formed by compressing one end portion of a nut blank 10 across two opposing flats 13 at their top portions 16 to provide an elliptical opening in the conical portion 11. The lubricant coating which may comprise hydrogenated castor oil wax, paraffin, stearic acid, lanolin, sodium nitrile and an emulsifier, is applied to the nut which is precoated with phosphate black, cadmium plate or zinc.