baber/WOPTO huggingface dataset:
Patent GB-241391-A (GB)
Title: Improvements in direct current dynamo electric machine groups
IPC: B60L9/04
Filed: 1924-10-22
Abstract: 241,391. English Electric Co., Ltd., and Calverley, J. E. Oct. 22, 1924. Exciting motor - generators. - In a continuous - current motorgenerator set in which the motor supply volts vary considerably, as in the case of a lighting set en an electrically-driven train, a substantially constant voltage is obtained at the generator terminals by means of an exciting winding, either on the motor or generator, carrying a current which depends on the difference in voltage between the generator and an exciter. Fig. 1 shows the application to a double commutator motor 9 driving a generator 1 and exciter 2, the motor being relatively unsaturated and the generator saturated at normal line volts and speed. The exciter is preferably less saturated than the generator and at low speeds there is a material difference between the voltages of these two machines which falls off as the speed rises. The opposing machines 1, 2 have a common connection on one pole and are connected on the other pole through compounding coils 3, 4 and an optional regulating resistance 5. At low speeds, the generator volts predominate and the compounding assists both of the main exciting coils 6, 7, the coil 7 being connected across the line in series with the motor shunt coil 8 and so giving the exciter and excitation proportional to the volts applied to the motor. Increase in line volts considerably increases the volts of the unsaturated exciter in comparison with these of the generator and so cuts down the current in the compounding coils 3, 4 and reduces the generator volts. If the volts supplied to the motor are too high to render shunt excitation desirable, it may be excited from the generator terminals, the exciter coil 7 being either in series or parallel with the motor field coils. The regulation to constant volts may also be effected by controlling the motor speed, as in Fig. 3, in which case the generator has a plain shunt winding 6 in parallel with the main motor coil 8, and the compounding coil 13, which carries a current due to the difference between the generator and exciter volts, is transferred to the motor in opposition to the coil 8. Fall of speed of the set, caused by reduced line volts, is corrected by an increase in the compounding current and consequent weakening of the motor field. The motor in any of the cases described may be compounded.
Patent GB-715940-A (GB)
Title: Improvements in or relating to cyclopentanopolyhydrophenanthrene compounds and methods of production thereof
IPC: C07J75/00
Filed: 1950-12-19
Abstract: The invention comprises D 6-dehydroestradiol and its esters; the manufacture of D 6-dehydroestrone, D 6-dehydroestradiol and 17-monoesters of the latter by heating a D 1,4,6-3-ketosteroid of the general formula <FORM:0715940/IV (b)/1> (wherein A represents C = O or CH-OR and R represents hydrogen or the residue of a fatty acid of not more than 6 carbon atoms or of an aromatic acid, obtainable by the process of Specification 715,883) to 500-650 DEG  C. in the presence of a hydrogen donor organic solvent; the catalytic hydrogenation of the resulting products to estrone, estradiol and 17-monoesters of the latter; and the acylation of the last named compounds with an acylating agent introducing a different acyl group from that already present.  The last mentioned step enables mixed esters of estradiol to be prepared from testosterone esters by a combination of the present process with that of Specification 715,883.  In examples (1) a solution of D 1,4,6-androstatriene-3 : 17-dione in mineral oil is passed through a glass tube filled with helices and heated to 600 DEG  C., producing D 6-dehydroestrone; (2) the product of (1) is converted to estrone by shaking with hydrogen in ethyl acetate in the presence of palladium-on-charcoal catalyst; (3) 17-acetoxy-D 1,4,6-androstatrien-3-one is treated as in (1) to produce D 6-dehydroestradiol 17-monoacetate, which yields D 6-dehydroestradiol 3 : 17-diacetate by acetylation with acetic anhydride and pyridine, and D 6-dehydroestradiol by alkaline saponification; (4) the first product of (3) is hydrogenated as in (2) to estradiol 17-monoacetate, which yields estradiol by alkaline saponification.
Patent GB-322006-A (GB)
Title: Improvements in stands for cycles, motor cycles and the like
IPC: B62H1/00
Filed: 1928-09-03
Abstract: 322,006. Hinch, N. G. Sept. 3, 1928. Supports attached to cycles.-Stands for motor and other cycles comprise, on one or on each side of the-machine, a plunger 20 provided with a foot 22 and slidably mounted in a guide block 5, which is attached by a rod 6 to the cycle frame or may be combined with the foot-rest, the plunger being normally held in the raised position by a compression spring 23 interposed between the guide 5 and a head 21; the plunger, which may be lowered to the ground by pressure of the rider's foot on the head 21, is held in the operative position by the engagement with annular teeth 25, Fig. 3, of a catch 26 on a sliding rod 16 pressed outwards by a spring 18. The catch 26 is released by inward pressure of the rider's, foot on the outer end of the rod 16. If desired, the plungers 20 may be lowered sufficiently to raise the wheel off the ground.
Patent GB-955770-A (GB)
Title: Apparatus for injection moulding articles
IPC: B29D35/08
Filed: 1962-07-03
Abstract: 955,770. Injection moulding. H. LUDWIG. July 3, 1962 [Dec. 13, 1961], No. 25366/62. Heading B5A. A machine for injection moulding, e.g. footwear, comprises a mould carrier 9 fed in turn to injection heads 18, 18 1 , each of which injects a different coloured plastic. The mould carrier houses mould parts 14, 15, 16 and has a lid 13 pivoted to the inside of which is a rotary head 52 with several different mould cavities 17, 17 1 . In operation the mould carrier is closed so that the cavity 17 co-operates with the rest of the mould cavity and is then brought into contact with the injection head 18 so that plastic is injected into the mould through an injection passage 53. When the plastic has partially set the lid 13 is opened and the rotary head 52 is rotated to bring the larger cavity 17 1  into place against the moulded article and the lid is closed. The carrier is then brought to the second head 18 1  where a different coloured plastic is injected through a passage 54. This second plastic bonds with the first. A number of mould carriers may be mounted on a rotary table 50.
Patent GB-812528-A (GB)
Title: Improvements in or relating to hydraulic shock absorbers
Inventor: HAWKRIDGE EDWARD
IPC: F16F9/48
Filed: 1957-08-12
Abstract: 812,528. Hydraulic dampers. WOODHEAD-MONROE Ltd. Aug. 12, 1957, No. 25394/57. Class 108(3) An hydraulic shock absorber of the piston and cylinder type has rebound stop means comprising an annular member which is a close sliding fit within the cylinder or a counterbore in the latter, resilient means adapted normally to maintain the annular member in a predetermined position and a disc-like member mounted on the piston rod in proximity to the piston, the arrangement being such that as the shock absorber approaches the fully extended position the disc-like member will abut the annular member and further movement of the disc-like member, and hence of the piston and piston rod, will be resisted by hydraulic fluid present behind the annular member and also by the resilient means. Oh rebound, seat 25 on disc-like member 24 abuts annular member 22 to form an oil-tight seal therewith Thus oil enclosed above annular member 22 can escape only by way of the bore in rod-guide 18 or the clearance between annular member 22 and pressure tube 10, considerable resistance being offered to further rebound movement of the piston. Annular ring 22 may be accommodated in a counterbore in the top of tube 10 in which case spring 23 would merely have to urge ring 22 away from rod guide 18 and not support it. -Compression valve 14 has no bleed hole but a hole 26 in tube 10 serves the same purpose except when it is closed by piston 11. The position of the hole may be varied to provide the required characteristics.
Patent GB-1084380-A (GB)
Title: Apparatus for drying frozen particulate material
IPC: A23L3/44
Filed: 1966-06-07
Abstract: 1,084,380. Drying frozen materials. LEYBOLD-HOCHVAKUUM-ANLAGEN G.m.b.H. June 7, 1966 [June 6, 1965], No. 25418/66. Heading F4G. In apparatus for subjecting the moisture content in a frozen, particulate material to sublimation, the frozen material is fed into one end (5) of an elongated box-shaped vibratory chamber (1) within an evacuated drying chamber (not shown), the vibratory chamber having a heating tubular coil (4) thereabout and orifices (3) with inwardly directed edges in its upper wall for the escape of water vapour into the drying chamber. The rate of feed through the end (5) and withdrawal through the other end (6) are adjusted so that the material layer in the vibratory chamber can be controlled. A series of vibratory chambers may be utilized in a single evacuated drying chamber which are vibrated from a common drive.
Patent GB-406068-A (GB)
Title: Improvements in and relating to filters
IPC: B01D27/02
Filed: 1932-09-13
Abstract: 406,068. Filters. LIVESEY, N., 6, Melrose Avenue, Monkseaton, Northumberland, and BROWN, J., 8, Kells Gardens, Low Fell, Gateshead. Sept. 13, 1932, No. 25469. [Class 46.] A filter wherein the filtering media are under the pressure of a loaded piston is provided with means whereby increase of resistance to the passage through the filtering media of the fluid to be filtered automatically eases the pressure of the loaded piston on the filtering media. As shown in Fig. 1, the filter comprises a casing a with inlet and outlet apertures b, c and fitted internally with concentric perforated tubes d, e, the tube e communicating at the lower end with the outlet c. The annular space between the tubes d, e is filled with felt washers f upon which bears a flange g<1> on the under face of a piston g. The piston g slides in the casing a and is loaded by an adjustable spring h. In use, increase of pressure on the inlet side due to the fouling of the filtering media relieves the pressure of the piston on the filtering media. A sludge cock r and a compressed air or steam cock t communicate respectively with the inlet and outlet sides of the filter, the cocks being interlocked so that the sludge cock is opened before the air or steam is admitted. In a modification, the outer tube d is dispensed with and two concentric columns of filtering media are used, the filtering media being either mounted on the central tube e or mounted between the piston and the bottom of the casing, in which case the tube e is attached to the piston. In either of the above modifications the fluid may be drawn through the filter by a pump connected to the outlet c, a port being provided in the centre of the piston to put the outlet c into communication with the space above the piston. In a further modification in which the piston is of the same diameter as the filter rings, the upper end of the tube e is closed and ports are formed in the flange of the piston through which the pressure on the inlet side is communicated to the under side of the piston.
Patent GB-225668-A (GB)
Title: Improvements in or relating to ironing machines
IPC: D06F67/02
Filed: 1923-10-12
Abstract: 225,668. Alliott, E. A., Manlove, Alliott & Co., Ltd. Oct. 12, 1923. Ironing-machines, heating-arrangements for.-Means for externally heating the covering of the perforated, internally-heated roller of a Decoudun or multi-roller machine, having means for applying suction to the covering, comprises a gilled tube 6, Figs. 1 and 3, carried by arms 5 and communicating, through a pipe 7, with the steamsupply to the roller 2 and, through a pipe 11, with the drainage system. The gilled tube serves to support brackets 13 which carry a rod 12 on which are carried flaps 15, portions of which are cut away at 17 to form passages for air, which is sucked over the gilled tube and through the roller covering and the perforations in the roller. Pivoted catches, not shown, are carried and to be held out of contact with the roller. The sides of the hood comprise pivoted plates 16 which may be held together by a spring. Flaps of fabric are secured to the plates 16 at their vertical joint and at their bases adjacent the periphery of the roller. The front of the leading flap may be extended over a strengthening bar 20, Fig. 7, or a finger 18 may be pivoted in front of the bar. The end members of the hood may be in the form of undivided plates and the front edge of the leading flap may terminate at the bar 20.
Patent GB-190271-A (GB)
Title: Improvements in and relating to the grinding and polishing of toric lenses
IPC: B24B13/02
Filed: 1921-09-27
Abstract: 190,271. Stevens, G. T. Sept. 27, 1921. Lenses, grinding and polishing.-Toric lenses are, ground and polished by mounting a number of glass blanks L on a spherically-surfaced runner R which is attached to the headstock of a lathe and rotated, the blanks being brought in succession beneath an oscillating tool T; one curvature of the lenses is determined by the distance of the centre of the exposed face of a blank from the centre of the runner, and the other curvature is determined by the curvature of the tool in a plane containing the axis of the runner. The tool boss g has therein a depression h, which is engaged d by a stem b, oscillation of the stem being effected, through rods c, d, e, by an adjustable eccentric m. The blanks are mounted on the runner by means of a layer of plaster of paris, or like material A, Fig. 4, and are positioned therein by two half rings B, which are pressed together until their ends meet.
Patent GB-1469781-A (GB)
Title: Production of scopine
IPC: C07D451/06
Filed: 1974-06-10
Abstract: 1469781 Scopine BOEHRINGER INGELHEIM GmbH 10 June 1974 25600/74 Heading C2C Scopine or a salt thereof is produced by reacting scopolamine (hyoscine) or a salt thereof with an alkali metal borohydride or alkali metal aluminium hydride in a solvent at for example a temperature between the freezing point of the mixture and 40‹ C. In the example, scopolamine hydrobromide in ethanol is reacted with sodium borohydride; the product is mixed with ether and hydrogen chloride gas passed to precipitate scopine hydrochloride; the precipitate in boiling methylene chloride is treated with ammonia to liberate the base.
Patent GB-1221881-A (GB)
Title: Device for reducing hydrocarbon emission of an internal combustion engine
Inventor: BOYD WILLIAM DAVID
IPC: F02M3/00
Filed: 1968-05-29
Abstract: 1,221,881. 881. Spray carburetters; treating charge. FORD MOTOR CO. Ltd. May 29, 1968, No.25632/68. Heading F1B. An auxiliary fuel device supplies a fuel-air mixture to the intake manifold during over-running, the supply being controlled by a valve 18 opened when the intake manifold pressure is less than the pressure during idling. Fuel from a float chamber 11 is mixed with air entering at 14 and flows to a chamber 10 where further air is added through orifice 12. The outlet 26 of the device is connected to the intake manifold and the high suction during over-running operates a diaphragm 23 to open the normally closed valve 18 to permit the mixture in chamber 10 to flow to the manifold. The spring loading of the valve 18 is adjusted by screw 21.
Patent GB-1313712-A (GB)
Title: Manifold imaging process
IPC: G03G17/08
Filed: 1970-05-28
Abstract: 1313712 Manifold imaging XEROX CORP 28 May 1970 [3 June 1969] 25647/70 Heading G2H In the manifold imaging process, an electric field of one polarity is applied across the imaging layer and the polarity is reversed before imagewise exposure. The fields may be applied using contact electrodes, as shown, or corona- or fur-charging devices. A second reversal may be effected after imagewise exposure.
Patent GB-1153951-A (GB)
Title: Magnetic Memories
Inventor: BOBECK ANDREW HENRY
IPC: G11C7/02
Filed: 1966-06-09
Abstract: 1,153,951. Magnetic storage apparatus. WESTERN ELECTRIC CO. Inc. 9 June, 1966 [10 June, 1965]. No. 25703/66. Heading H3B. In a thin film magnetic memory the sense conductor is positioned outside the bit location but is coupled to the thin film exterior to the location. The memory shown in Fig. 1 comprises a waffle iron base-plate 11 and thin film overlays 13, each film overlying three adjacent columns of posts 12 sharing one column of posts with the next adjacent overlay. A bit location, Figs. 2, 3 (not shown) comprises three adjacent posts (not including the first post) in each of the first three rows of the memory and the overlays there, four interesctions between word W1 and digit conductor D1 defining the bit location. In operation a word pulse from driver 14 is first applied to cause the flux to rotate into the hard direction as shown by the arrows in Fig. 1 and then as the word pulse relaxes a digit pulse, the polarity of which determines the digit to be stored, is applied to digit conductor D1 so that the flux orientates along the easy axis between the second and third column of posts and in the opposite direction between the third and fourth posts. Because of the physical displacement of the sense conductor S1 from the defined bit location and because of the shielding due to the ferrite posts of the waffle-iron board digit to sense coupling is eliminated. When flux in a bit location of a thin film memory re-orientates from a hard to an easy direction that flux tends in turn to urge to like orientations the flux re-orientating itself in next adjacent areas and the same information is stored in the adjacent areas. When a read operation is carried out by applying a pulse to word conductor W1 the flux rotated in the area to which flux spreads during the write operation outside of the bit location, is rotated during the read operation and induces a signal in sense conductor S1. The polarity of the signal indicates the binary value stored. In order to encourage flux spreading the corresponding posts of the waffle-iron plate in adjacent rows may be shaped to form angles with one another and thus shape the overlay therebetween to provide a variation in fields generated thereacross, Fig. 4 (not shown). In a second embodiment, Fig. 5 (not shown) four rectangular spots of thin film are mounted on a glass plate in positions at intersections between word and digit solenoids, and sense conductors are coupled to the thin films outside of the bit locations. The films may be shaped to encourage flux spreading, Fig. 6 (not shown).
Patent GB-224234-A (GB)
Title: Improvements relating to temperature-indicating means for the cooling systems of internal combustion engines
IPC: F01P11/16
Filed: 1924-10-29
Abstract: 224,234. Dintilhac, J. G. Nov. 2, 1923, [Convention date]. Cylinders, cooling.-A cock c is placed in a pipe b<2> connecting the cooling jacket and the radiator a to regulate the temperature of the cooling water which is indicated on the dashboard by a thermometer i. In the case of a forced water-circulation system, the radiator may be by-passed by a pipe connecting the return pipe b<1> and the cock c. The cock is rotated against a spring h by a Bowden or other wire e connected to a handle on the dashboard. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a device for rotating the cock c automatically which comes into action when the cooling water reaches a definite temperature. This subject-matter does not appear in the Specification as accepted.
Patent GB-1060336-A (GB)
Title: Device for cigarette packing machines for closing off the hopper on the upper side
IPC: B65B19/04
Filed: 1965-06-18
Abstract: 1,060,336. Cigarette hopper. MASCHINENFABRIK FR. NIEPMANN G.m.b.H. & CO. June 18, 1965 [July 7, 1964], No. 25832/65. Heading B8S. A cigarette hopper, not shown, is replenished from a magazine 50 which is upturned over the hopper between guides 1 and 2. The fall of the cigarettes is governed by a steel band 4 which is wound on a drum 7. The drum is motoroperated by rack-and-pinion 11, 10 so that a quick withdrawal of the band 4 permits the cigarettes to fall into the hopper altogether.
Patent GB-616136-A (GB)
Title: Improvements relating to fishing line reels
IPC: A01K89/016
Filed: 1946-08-28
Abstract: 616,136. Fishing-reels. COOKE, S. E. Aug. 28, 1946. No. 25839. [Class 48] The reel has a click-pawl mechanism which is adjustable to give a strong or less-strong check action either when the reel is rotating in a clockwise direction or when it is rotating anti-clockwise. The reel, comprising front and back plates, 17, 18, and connecting pins 20, is freely rotatable on a fixed spindle 14, and may be reversed, by removing a nut 15, for either a right-handed or left-handed person. The spring-pressed triangular detent 29 is mounted on a pin 25 and may be turned by a knob 23 so that either one of the two sharp corners of the triangle may engage a toothed wheel 22, on the reel, or a rounded corner brought to face the wheel, which it does not engage so that, in this case, the spool runs free from check action. When a sharp corner engages the wheel 22 the other sharp corner will press into the bow-spring 34 to give a greater resistance to the reel than if the detent is positioned so that the rounded corner is pressed into the spring. A locating pin 26, which acts as a stop, is contained in a slot 30, in the detent. A second triangle 28 engages a bow-spring 35 to steady the mechanism. The pins 20 may be placed more distantly from the spindle 14.
Patent GB-998473-A (GB)
Title: A can with a replaceable closure
IPC: B65D43/02
Filed: 1961-07-17
Abstract: 998,473. Metal cams; container closures. NATIONAL CAN CORPORATION. July 17, 1961 [July 18, 1960], No. 25864/61. Headings B8D and B8T. A metal can is formed with a collar 26 on which a closure 36 is seated, the closure 36 being replaceable once the can has been opened by cutting out an end 14 seamed to the can wall. The closure 36 is of plastics, e.g. polystyrene, and is designed to flex the end 14 upwards as the end is cut out. The closure 36 may have protrusions lying within the inverted U of its rim which provide vent openings for the escape of gas, Fig. 5 (not shown). Additional contents, e.g. advertising material, may be included between the members 14 and 36. The opening in the collar 26 may be non- circular, and the collar may itself be of plastics material, Fig. 7 (not shown). Instead of being seamed to the can wall as shown, the collar may be supported on an inward bead. The can base may be shaped so as to fit on the top of a similar can stacked below, Fig. 4.