baber/WOPTO huggingface dataset:
Patent GB-292268-A (GB)
Title: Improvements in or relating to high speed gears
IPC: F16H55/08
Filed: 1927-03-22
Abstract: 292,268. Jackson, L. Mellersh-, (Connersville Blower Co.). March 22, 1927. Toothed wheels.-The involute or cycloidal gearing-portions A, T, B of the flexible teeth of high speed gearing, of which three or more are adapted to contact simultaneously, are extended to form sub-roots A - - D, of which the side faces approximately form part of an equal strength parabola with vertex at the point M at the greatest distance from the wheel centre at which the line of contact L, L cuts the tooth axis. Straight sides AC, BD constitute a sufficiently close approximation to the parabolic form. The tooth profiles A, T, B may be extended almost to pointed form, the tops being rounded. to avoid scraping away the lubricant. Calculations are included for proportioning the teeth in such manner that the deflecion of each pair under normal load is sufficient to avoid complete unloading of the other pairs in action. Specifications 17232/11 and 200,491 are referred to.
Patent GB-678182-A (GB)
Title: Improvements in hair waving appliances
Inventor: DAVIDS RAYMOND EDWARD
IPC: A45D6/18
Filed: 1950-03-30
Abstract: 678,182. Hairwaving appliances. CALLINAN, GILES & CO., Ltd. March 19, 1951. [March 30, 1950] No. 7965/50. Class 131. A scalp-protecting pad, for use in permanent waving and through which the hair is threaded, is provided on each of two opposite edges, with a flexible lug apertured to receive the end of a curler rod on which a tress of hair has been wound. As shown, extensible lugs 13 are moulded integrally with a sponge.rubber pad 10, ribbed or dimpled at 17 as disclosed in Specification 663,482, an aperture 11 allowing the passage of a tress of hair and the lugs being apertured at 14 to receive the ends of the curler. In modifications the pad is plain and the apertures formed in a rubber strip secured to one face of the pad.
Patent GB-1488284-A (GB)
Title: Record players
IPC: G11B19/20
Filed: 1976-02-25
Abstract: 1488284 Turntable PLESSEY CO Ltd 25 Feb 1976 [26 Feb 1975] 7973/75 Heading G5R Turntable 1 including a double-walled axiallyextending, cylindrical flange 3 is formed from a sheet metal annular blank by a drawing operation. The radially outer wall of the flange, which in use is engaged by a drive belt, is perpendicular to the turntable surface and the radially inner wall is formed at an inclination of 5-45 degrees to the outer. The table is apertured 10 to facilitate fitting of the drive belt.
Patent GB-1248001-A (GB)
Title: Trailer hitch with trailer brake actuating apparatus
IPC: B60D1/06
Filed: 1969-02-14
Abstract: 1,248,001. Vehicle couplings. TOLEDO STAMPING & MFG. CO. 14 Feb., 1969 [15 Feb., 1968], No. 8039/69. Heading B7T. [Also in Division F2] In a trailer hitch system, an apparatus for controlling the trailer brakes (see Division F2) takes the form of a master cylinder 30 affixed to the rear member 20 of the trailer hitch, the master cylinder 30 having a piston or brake rod 34 extending forwardly therefrom such that a spring 36 resiliently urges the brake rod 34 towards the master cylinder 30 when the trailer moves closer to the towing vehicle 12, a pressure responsive valve 78 being provided in the head of the piston to enable the pressure in the master cylinder chamber 54 to be relieved when the valve 78 abuts a fixed stop member 102 located in the forward end of the master cylinder when the trailer is being reversed. The trailer hitch 10 includes a forward hitch member 16 having a ball hitch connection 18 to connect with the towing vehicle and a rear member 20 attached to the trailer. The members 16 and 20 are connected for movement towards and away from one another by two sets of parallel links 24 which are pivotally connected at their ends to the hitch members through pivot pins 26 and 28. A shock-absorber 48 is connected between the front and rear members 16 and 20 to prevent surging of the vehicles. The hitch also includes a break-away lever 50 which acts directly on the forward end of the brake rod 34 to apply the brakes in the event of a break-away.
Patent GB-571243-A (GB)
Title: Improvements in and relating to apparatus for controlling the load on an x-ray tube
IPC: H05G1/46
Filed: 1942-06-13
Abstract: 571,243. Control systems for X-ray tubes. PHILIPS LAMPS, Ltd., and JEANS, A. F. June 13, 1942, No. 8099. [Class 38 (iv)] The main circuit of an X-ray tube is controlled by three switches linked respectively to the devices for controlling the milliampere, kilovolts and exposure time so that while preventing overload the exposures may be made as near maximum load as possible in all cases. As shown, a relay R controlling the main circuit is in series with selector switches SmA, ST, each having contacts engaged by a switch arm in accordance respectively with the setting for tube current and exposure time and with a drum having several rows of contacts and positioned, in respect of a line of brushes connected to the contacts of switch SmA, in accordance with the voltage applied to the tube. The contacts on this drum are connected in groups to slip-rings with which the several contacts of switch ST are connected so that with a given setting for electrode voltage the tube current and exposure time give the maximum load possible. By providing the switch ST with a wiper STW moving with its contact arm, the tube can also be operated at loads below the maximum with any kilovolt setting. The voltage selector and exposure time selectors may co-operate to operate a relay, setting the mA selector to the permissible maximum load or operating a stop in the path of a manual mA selector handle. In addition, a visual indicator may show the permissible maximum mA corresponding to the settings of the remaining controls.
Patent GB-852550-A (GB)
Title: A method of producing very pure silica
IPC: C01B33/18
Filed: 1958-03-13
Abstract: <PICT:0852550/III/1> Hydrated silica containing boric and/or phosphoric acid as impurity, e.g. as produced by the hydrolysis of silicon tetrachloride, is freed from said impurity by extracting with a mixture of methanol and a water-immiscible ether e.g. isopropyl ether, and recycling the solvent to the extraction step after purification by distillation.  The solvent may be distilled in the presence of solid sodium or potassium hydroxide to prevent formation of methyl borate.  The process may be commenced by extracting an aqueous methanol suspension of hydrated silica containing 30-60% of methanol with the ether.  The silica may be purified so as to contain less than 10-6% of boron and/or phosphorus.  The purified silica may be dried, calcined, and fused to form a crucible for use in the production of pure silicon crystals.  As shown an extraction apparatus comprises a distillation flask 4 containing a quantity of alkali metal hydroxide 7, a reflux condenser 1, a return tube 3, an extraction tube 8, and a stirrer 5.
Patent GB-512802-A (GB)
Title: Improvements in or relating to devices for securing bicycles and the like and/or fittings thereon against theft
IPC: B62J6/06
Filed: 1938-03-16
Abstract: 512,802. Bolts &c. MEESS, V. March 16, 1938, Nos. 8156 and 8157. Convention dates, June 15, 1937, and Feb. 2, 1938. [Class 89 (i)] [Also in Groups XXXI and XI] To prevent the theft of bicycles and the like and/or of fittings thereon, such as the headlamp or a lighting dynamo, a hollow bolt and nut securing the accessory to a supporting bracket are secured from removal by a key operated locking pin inserted therein. The pin may be of extended form so as to pass between the spokes of one of the road wheels. As shown in Figs. 1, 3 and 4, an arm 7 carrying a dynamo 10 adapted to be driven from the wheel tyre 12 is secured between the jaws of a clamping bracket 1 embracing the wheel fork arm 2 by a hollow bolt 5 and its nut 14, spacing washers 13 being interposed. The locking means comprises a pin 15 incorporating a cylinder lock 18, the rotary element of which is provided with an extension 21 terminating in a crank pin 22 operating a transversely slidable bolt 24 in the body of the pin. When the pin 15 is inserted into the hollow bolt 5 and locked, the bolt 24 is protruded into an annular recess 25 in the head of the bolt 5, the free end of the pin 15 at the same time passing between the spokes of the road wheel. As applied to secure a headlamp, Figs. 6 and 8, the lamp supporting lugs 33 are similarly secured between the jaws of a clamping bracket 26 by the hollow bolt 34, and the locking pin 36, which in this case is shorter, is inserted in the bolt 34 as before, the transverse locking bolt 39 being enclosed by the recessed head 40 of the bolt. The locking pin preferably carries a cap 41 which encloses the nut 35. The device may further secure the glass front of the lamp from removal. For this purpose, a metal strip 44, secured to the front cover, terminates rearwardly in an eye in alignment with the openings in the supporting lugs 33 so that the bolt 34 may pass therethrough. In an alternative construction the strip 44 is provided at its rear end with a half-cap with an opening so that it may be applied to the end of the bolt 34 and then partly shields the clamping bracket 26 and lamp lugs 33. Means may be provided to prevent rotation of the locking pin.
Patent GB-101461-A (GB)
Title: Improvements in and connected with Pads for use in Hat-finishing Machines.
Inventor: TURNER WILLIAM ERNEST
IPC: A42C1/08
Filed: 1915-09-17
Abstract: 101,461. Turner, W. E., and Lowe, R. Sept. 17, 1915. Pouncing and finishing.- Felt hat bodies, while being pounced against a roller j, are supported on a pad consisting of a closed rubber cylinder a filled with water and glycerine through a tube b and held by smooth-faced fabric e in a recess in a wood holder d. The axes of the roller and cylinder are parallel, and the pad is adjustably held by a wing-nut g in a slotted arm l, which forms an extension of a foot-actuated lever for applying the necessary pressure.
Patent GB-495616-A (GB)
Title: Improvements in or relating to driving members for films having sprocket tooth perforations and to sound recording apparatus employing such members
IPC: G03B31/00
Filed: 1938-03-18
Abstract: 495,616. Sprocket rollers; feeding sound-record films. ELECTRICAL RESEARCH PRODUCTS, Inc. March 18, 1938, No. 8371. Convention date, March 31, 1937. [Class 97 (i)] A sprocket roller comprises a positively driven element driving the film by friction, and one or two elements having sprocket teeth resiliently coupled to the driven element. As shown, a drum 18, frictionally engaging the film surface, is secured by a pin 20 to a shaft 19, and toothed discs 21, 22, rotatably mounted on the drum, are each secured to the drum by coiled springs 36, 37 connecting pins on the disc to a pin 30 which is secured to the drum and passes through a slot 32 in the disc. A drum for narrow gauge films may carry one toothed disc only. In soundrecording apparatus, Fig. 1, having such a sprocket roller, the roller is arranged near the exposure point on a roller 11. The film is fed by a feed and take-up sprocket 8, is caused by a pressure roller 17 to engage approximately three quarters of the surface of the roller 11, and by a pressure roller 29 to wrap adequately the surface of the drum 18.
Patent GB-1532992-A (GB)
Title: Chuck control arrangement
IPC: B23B31/20
Filed: 1976-02-27
Abstract: 1532992 Chucks EMI Ltd 27 Feb 1976 [28 Feb 1975] 8379/75 Headings B3B and B3T A chuck actuating mechanism, e.g. at the bar feed end of a lathe headstock, comprises a linearly movable thrust tube 11, e.g. engaging a collet 13, and a linearly movable actuating ring 42, the ring 42 causing movement of the tube 11 by means of levers 50, or wedges, providing a mechanical advantage. The mechanical advantage is provided by cam faces 53, 54 between the ring 42 and levers 50, and by the levers per se. The ring 42 is part of an actuating means 40 having spring stacks 441 to hold the collet 13 closed. An adjustable back stop 21 allows the clamping range and force to be adjusted. The chuck can be released during rotation by means of a fluid pressure ram 60 having a piston 65 which moves a sleeve 61 to drive backwards a set of pins 49 to release the spring loading from the levers 50. While the springs are compressed a ring 22 can be rotated to engage keyhole slots behind the heads 45 of guide pins 44 to hold the spring force constrained between rings 41 and 42 during adjustment of the back stop 21. The bar feed end of a sleeve 81 has a plastics liner 16, e.g. nylon. An automatic lathe is described (Fig. 2, not shown) having a turret (110) and slide (115) supported on a hollow column part of the machine tool bed. The hollow column houses control cables and hoses for the turret and slide.
Patent GB-701927-A (GB)
Title: Improvements in or relating to a candy making machine
IPC: A23G3/02
Filed: 1951-04-11
Abstract: 701.927. Moulding confectionery. IDEAL WRAPPING MACHINE CO. April 11, 1951 [Aug. 31, 1950], No. 8394/51. Class 87 (2) [Also in Group VI] In apparatus in which candies are wrapped and pierced to form a recess in which a stick is placed, the candies are moulded from a batch of candy dough on a cutter disc 21. The disc 21 has knives 22 between which parts of the batch of dough may be kneaded by a plurality of kneaders 23 after the knives have been rotated within the guard 24. The formed candy is then severed from the batch and fed to a wrapping wheel 27.
Patent GB-479715-A (GB)
Title: Improvements in cooling apparatus for treating bakery products
Filed: 1937-03-22
Abstract: The vapours drawn off from a vacuum chamber in which bread is cooled are stored and returned to the chamber on breaking the vacuum in order to restore any flavours withdrawn from the bread during the evacuation.  Alternatively, the air for breaking the vacuum may be led through a condenser in which the flavours from the air withdrawn from the chamber have been condensed.  Flavours, such as artificial butter, suspended in a suitable liquid such as oil, or alcohol may also be injected into the entering air. Specification 476,248, [Group XIII], is referred to.
Patent GB-686291-A (GB)
Title: Method and apparatus for the production of hollow articles from thermoplastic material and articles produced thereby
IPC: B29C49/06
Filed: 1951-04-11
Abstract: 686,291. Making hollow articles from thermoplastic materials. NOVOPLAST GES. April 11, 1951 [April 15, 1950], No. 8420/51. Class 87 (ii). The material is injected into a first mould to form a thick-walled blank, and the blank is then expanded in a second mould by compressed fluid to the size and shape of the required article, which may be a bottle or other container. Thus, a preform h, Fig. 1, is made by injecting polyethylene through a channel d into a mould comprising two outer parts a, b and a core c, then the core with the preform on it is enclosed in another two-part mould f , g, Fig. 4, and blown out into contact with the mould by means of compressed air passing through a duct c<SP>1</SP> in the core and past a valve e. As mould parts f, g close, the sprue i is cut off by sharp edges f<SP>1</SP>  on the parts. Figs. 5, 6 and 10 show a machine for doing this, comprising (Figs. 5 and 10, plan, Fig. 6, sectional elevation looking right) a fixed platen 3 and a platen 4 slidable on rods 5. The mould parts b, g are fixed to the stationary platen 3 and the mould parts a, f are fixed to the slidable platen 4. The core c is carried by an arm 8 pivotally mounted on a spindle 9 supported by the mould parts, and may be rocked from one mould a, b to the other mould f, g. Around the spindle 9 is a spring 10 which urges the arm and core clockwise, Fig. 5, so that the normal position of the core is as shown in Fig. 10, the core resting in the mould part g. Figs. 5 and 6 show the position in which the preform is being made by injection from cylinder 12 through channel 13 into mould parts a, b. Fig. 10 shows the position when a bottle has been blown in mould parts f, g by means of compressed air through flexible pipe 7 and core c containing valve e on spring-pressed rod 17; platen 4 has retracted, taking the mould parts f, a, with it. With the parts in this position the operator grasps a handle 11 on arm 8, rocks the core out of mould part g, removes the blown bottle, and rocks the core around until it rests in the mould part b (Fig. 5 position), the arm 8 being held in this position by a catch 15 engaging a stud 14 on the arm. Platen 4 is then advanced to close the moulds. A preform is then injected into mould a, b, platen 4 retracts, a catch 16 thereon releases stud 14, and arm 8 swings back to the Fig. 10 position. In a modification, Fig. 11 (not shown), the machine is a duplex one, there being two sets of moulds and cores and two bottles being blown simultaneously.
Patent GB-1248950-A (GB)
Title: Apparatus for heating a building or other structure
Inventor: BEAULIEU ADRIAN ARTHUR
IPC: F24H1/22
Filed: 1968-12-24
Abstract: 1,248,950. Central heating systems. MEGATHERM CORP. 24 Dec., 1968, No. 8425/71. Divided out of 1,248,948. Heading F4U. The subject matter of this specification is identical with that described in Specification 1,248,948 with respect to apparatus for heating a building and the claims are direct to such apparatus.
Patent GB-731868-A (GB)
Title: Improvements in or relating to spinning frames for bast fibres or long leaf fibres
IPC: D01H5/26
Filed: 1953-03-26
Abstract: 731,868. Drawing arrangements for spinning machines. HARBECK, M., STEFFEN, H. W., HARBECK, M., and STEFFEN, E., [trading as HEIDENREICH & HARBECK]. March 26, 1953 [April 9, 1952], No. 8444/53. Class 120(2). In a flyer spinning frame for bast or long leaf fibres having positively driven sliver guiding and supporting means located between pairs of feed and delivery rollers, an additional pair of rollers, arranged to rotate at the same circumferential speed as the delivery rollers, is provided between the latter and each flyer. A machine having feed rollers 2, 9, delivery rollers 14, 16, drafting belts 22, 23 and a flyer 18 has the additional rollers 20, 21 urged together by a spring 17 that also applies pressure to the delivery roller 16 through a lever 51. A condensing guide 44 is located between the pairs of rollers 14, 16 and 20, 21 and a thread feeler lever 34 is arranged to bear upon the thread while it is intact and to move on thread breakage to disconnect the drive between the shaft 1 and the roller 2 which, in turn, drives the two belts 22, 23. The belts 22, 23 are pressed together by an adjustable lever 39. Specification 684,777 is referred to.
Patent GB-1350321-A (GB)
Title: Pipe drill clamp
IPC: F16L41/06
Filed: 1972-02-24
Abstract: 1350321 Drilling pipes E HAWLE 24 Feb 1972 [23 March 1971 23 Dec 1971] 8495/72 Heading B3C [Also in Division F2] A pipe drill clamp adaptable for different sizes of main pipe comprises a saddle member having a plane underface 2 sealed by a planoconcave gasket 3, and clamped by bolts 15, which swivel, with bearing members 9, into alignment with the direction of tension in band 7. The length of band 7 is adjustable by winding it around trunnions 17, projecting from nuts 16. The gasket 3 may have annular ribs (4, Fig. 3, not shown) engaging grooves (5) in surface 2 and in the pipe wall. After drilling, a branch pipe is screwed into bore 14.
Patent GB-1248184-A (GB)
Title: Yttrium alloy getter
IPC: H01J7/18
Filed: 1970-02-23
Abstract: 1,248,184. Reactors. WESTINGHOUSE ELECTRIC CORP. 23 Feb., 1970 [3 April, 1969], No. 8519/70. Heading G6C. [Also in Divisions C7 and H1] A getter consisting of an alloy of Y with at least one of Zr, Ti, Nb, Hf, Mo, Ta, W and V or a binary alloy of Y with up to 10% Al, 45% Be, 15% Co, 35% Cu, 50% Fe, 35% Mg, 15% Ni, 50% Mn or 40% Zn, the Y being in a separate phase in the alloy is contained in a sealed UO 2  nuclear fuel element and in the walls of a nuclear reactor pressure vessel to absorb H 2  from the walls and from the space within the element or vessel. The element may have a Zr alloy or steel casing which contains one or several getter bodies, alternatively the casing may be coated with getter material.
Patent GB-122768-A (GB)
Title: Improved Tack Puller for use in the Manufacture of Boots and Shoes.
Inventor: FAIRWEATHER WALLACE
IPC: A43D61/00
Filed: 1918-05-23
Abstract: 122,768. Fairweather, W., (Hamel Shoe Machinery Co.). May 23, 1918. Preparing lasted boots for sewing.-A rotary tack-puller for extracting insole-holding tacks comprises one or more double. ended blades 14 clamped in slots 13 in a disk 11, the blades being preferably bevelled, as shown at c. In front of each slot is a cut-away portion d, while behind each blade is a roughened surface e, conveniently formed by a series of sharp ribs. As the disk rotates, the head of the tack drops into. the cut-away portion d and a blade then engages the tack. As the disk rotates further, the roughened surface c engages the insole and tends to carry the shoe along with it tangentially, while the blade is moving away from the insole and pulling out the tack.
Patent GB-526883-A (GB)
Title: A warning device for detecting intrusions into prohibited areas
IPC: G08B15/00
Filed: 1939-03-17
Abstract: 526,883. Burglar alarms. BAKER, R. H. March 17, 1939, No. 8551. [Class 118 (i)]. In burglar alarm apparatus of the kind operated by a thread or wire, a weighted lever controlling a latch normally supporting a cartridge, is connected to the wire and releases the latch to allow the cartridge to fall and cause an explosion when the string is pulled or broken. The string 37 is attached to a thimble fitting on the end of a lever 36 and is fitted with a short rubber sleeve 38. When the string is pulled or broken the sleeve 38 is moved off the pulleys 34 and the string falls between these pulleys and releases lever 36 which swings under the action of weight 25 and removes the support from a Verey cartridge 15. The latter then slides down a rod 12 and strikes the base 11 and explodes, giving a visible and audible signal. The thimble may be omitted and the spring then pulls the lever 36 off a retaining shelf or in a further alternative activates the lever by a direct pull.
Patent GB-107585-A (GB)
Title: Improved Manufacture of Acetaldehyde.
Filed: 1917-06-14
Abstract: 107,585. Deutsche Gold & Silber Scheideanstalt vorm. Roessler. June 15, 1916, [Convention date]. Acetaldehyde.-In the manufacture of acetaldehyde from acetylene and steam at high temperatures in the presence of catalytically acting metal oxides, the catalysts when deteriorated are regenerated by passing over them a current of hot air; this removes any deposit of carbon and reoxidizes lower oxides to higher oxides. The acetylene and the catalysts should be free from phosphorus compounds. In an example, the catalyst employed is a mixture of molybdic acid with asbestos. Specification 107,584 is referred to.