baber/WOPTO huggingface dataset:
Patent GB-407804-A (GB)
Title: Improvements in change speed gears for gramophones
IPC: G11B17/02
Filed: 1933-01-19
Abstract: 407,804. Gramophones. THORENS SOC. ANON., H., Ste. Croix, Switzerland. Jan. 19, 1933, No. 1773. Convention date, Jan. 25, 1932. [Class 40 (ii).] Change-speed gearing for gramophone turntables comprises a number of gear-wheels on a tubular shaft on which the turntable is mounted, one of these wheels being permanently connected to the driving motor, a parallel shaft carrying gear-wheels for transmitting the drive when or as required from one to another of the wheels on the tubular shaft, and a movable rod which extends through the tubular shaft and is provided with selective coupling means coacting with the wheels on the said shaft. In the construction shown in Fig. 1, wheels 4, 5, secured together, and a separate wheel 7 are loosely mounted on the tubular turntable shaft 3, the wheel 4 meshing with a motor-driven worm 14. A parallel shaft 19 has wheels 20, 21 fixed thereto and gearing with the wheels 5, 7 respectively. Either the wheel 5 or the wheel 7 can be coupled to the shaft 3 as required, by means of a pin 15 on a rod 9 slidably located in the tubular shaft, the pin being adapted to engage either with a pin 17 in a recess in the wheel 5 or with a similar pin 18 in the wheel 7. A spring- controlled ball 10 holds the rod 9 in either of its two operative positions. In the modification shown in Fig. 3, the gear-wheels are similarly arranged, but the device for selectively coupling to the turntable shaft 3 the wheels loosely mounted thereon comprises a pair of spring- controlled rollers 32, 33 located in slots in the shaft adjacent to grooves 44, 45 in the hubs of the wheels, the rollers lying in contact with a rod 9 passing through the turntable shaft. The rod is recessed at 31 so that when it is turned to either of two appropriate positions, the recess allows one of the rollers 32, 33 to recede from the groove 45 or 44, so that the corresponding wheel can turn freely, whilst the other roller is forced into coupling engagement with its associated wheel. In a further construction, (Fig. 2, not shown) the turntable shaft carries, in addition to the wheel permanently geared to the motor, two integral wheels of different sizes. These are coupled to the shaft by means of a pin on a rod longitudinally slidable therein, and are adapted to be moved so that one or other of them is in gear with a corresponding wheel on the parallel shaft.
Patent GB-1458791-A (GB)
Title: Method and apparatus for continuously making a mixture of viscous material with solid materials
IPC: B29C70/50
Filed: 1975-01-16
Abstract: 1458791 Continuous moulding TAKEDA YAKUHIN KOGYO KK 16 Jan 1975 [23 Jan Jan 1974 (2)] 1913/75 Heading B5A [Also in Division B1] Mixing.-Apparatus for mixing solid and viscous materials comprises a pair of counterrotating mixing rolls 21, 22 separated by a predetermined gap (which may be in the range 0À3-5 mm.), to which the viscous material is metered through slots in the bottom of ducts 19, 20. Solid material in the form of filaments 10 is chopped into strands of 20-30 mm. length between a chopping roll 13 and a rubber-covered roll 12, falls through a shoot H on to the layers of viscous material clinging to the mixing rolls, and is mixed therewith in the nip of the rolls. The mixture is removed from the mixing rolls by fast-rotating doctor rolls 23, 24, each of which rotates in the same direction as the mixing roll above it, and is spattered downwards. The mixing rolls may be replaced by a pair of endless belts, (see Figs. 4 and 5, not shown). The doctor tolls are shown as cylindrical, but may be of polygonal or toothed cross-section, or having axially extending blades or grooves (see Figs. 3(a)-3(d), not shown). Moulding.-As described the solid filaments 10 are glass fibre rovings and the viscous material a synthetic resin, and the mixture may be received between polyethylene carrier webs 39, 40 and rolled up to form a sheet moulding compound. In a modification, Fig. 6, there may be a back-up cover 46 below the lower polyethylene web, having a plurality of equally spaced receptacles 46a to obtain the reinforced moulding compound in the form of rods.
Patent GB-1416043-A (GB)
Title: Electron microscope aperture system
IPC: H01J37/09
Filed: 1973-01-15
Abstract: 1416043 Electron microscopes NATIONAL AERONAUTICS & SPACE ADMINISTRATION 15 Jan 1973 [28 Jan 1972] 1941/73 Heading H1D In an electron microscope having an objective lens 18 for focusing the electrons passing through the specimen 16 on to an image plane 24, the lens includes an aperture plate 20, Figs. 1 and 2, having an annular aperture to reduce chromatic aberation. The aperture in the condenser lens aperture plate 14, for focusing the electron stream on to the specimen, may be either annular, as shown, or circular (Fig. 9, not shown). The objective aperture may be 50 Ám. in diameter and 3 Ám. in ring width, and may be fabricated (Figs. 4 to 8, not shown) by evaporating a first metal film, e.g. 300Š silver, on to a collodion film; mounting the composite structure on the objective aperture slide of an electron microscope having an annular condenser aperture; operating the microscope to form a contamination layer, caused by the decomposition of residual gas molecules, over the annular illuminated area; removing the structure from the microscope and galvanically depositing a second metal layer, e.g. 10,000Š Cu, over the non-contaminated area of the first metal film; and finally etching away, by ion bombardment from the rear surface, the collodion layer, the first metal film, and sufficient of the second metal layer to remove the contamination layer and leave the annular aperture. A third metal layer, e.g. 1000Š gold, may finally be evaporated on the structure surface, for stability and cleanliness. The size of the objective aperture formed may be adjusted by varying the objective lens current, and the method may be employed to produce a multi-aperture plate.
Patent GB-243193-A (GB)
Title: Improvements relating to the cutting of wood-screws and the like
IPC: B23G5/18
Filed: 1925-01-22
Abstract: 243,193. Kaiser, J., and Kaiser, O. Jan. 22, 1925. Milling screws; milling-cutters.-A wood-screw a is threaded by means of a radially-fed milling-cutter b having a width corresponding to the length of the threaded portion and profiled to correspond with the shape of the screw. The cutter-spindle, which is rotated by bevel-gearing c, d, is mounted in a bearing f on a cross slide by which the radial feed is effected. The cutter may be built up of sections A, B, C, as shown in Fig. 3. In a modification, Fig. 4, two axially-arranged cutters may be employed to cut two screws simultaneously from a single blank. A number of blanks may be arranged round the cutter in diametrically opposed groups a, the cutter being fed laterally from one group to the other. This arrangement permits the substitution of blanks for finished screws at one side of the cutter while the other group of blanks is being cut.
Patent GB-670900-A (GB)
Title: Improved process for the preparation of metallic powders
IPC: B22F9/22
Filed: 1950-01-26
Abstract: Finely-divided non-pyrophoric powders of metals such as iron, cobalt, nickel, tungsten or molybdenum are obtained by reduction of finely-divided metal oxide by a reducing gas at a low temperature, the reduced metal being cooled in the reducing gas and then either placed in vacuum or submitted to a sub-atmospheric temperature.  In the production of tungsten and molybdenum in a continuous push furnace by movement of crucibles along a tube containing reducing gas, there are successively arranged in the direction of travel of the crucibles, the hot zone of the furnace, a zone cooled by water and a freezing zone cooled by a freezing liquid, the reduction or metal at a temperature of 720 DEG C. being followed by cooling to ambient temperature and then by further cooling at a temperature between 0 DEG  and -100 DEG C.  The metal powders so obtained may be used in the production of simple or complex metallic carbides.
Patent GB-1520361-A (GB)
Title: Tool for piercing earlobes
IPC: A44C7/00
Filed: 1976-01-20
Abstract: 1520361 Ear pins GOLDEN M ENTERPRISES INC 20 Jan 1976 02180/76 Heading A3H [Also in Division A5] During earlobe piercing a pointed stud 50 is pushed through the lobe and into an aperture in 268 in a clip 262, being retained by the necked portion 58 engaging the aperture. The head of the stud may be spherical or cylindrical.
Patent GB-284217-A (GB)
Title: Improvements in or relating to the protection of cables
IPC: H01B7/32
Filed: 1928-01-23
Abstract: 284,217. Siemens Schuckertwerke Akt.-Ges., (Assignees of Siemens-Schuckertwerke Ges.). Jan. 24, 1927, [Convention date]. Cables with auxiliary conductors.-Auxiliary conductors embedded in a cable and connected together in parallel with the main conductor are chosen of such cross-section and are so placed within the cable that within a frequency range extending up to a multiple of the fundamental frequency the resultant current in the auxiliary conductors connected in parallel is in phase with the current of the main conductor.
Patent GB-450518-A (GB)
Title: Improvements in and relating to methods of controlling electric lighting circuits
IPC: G05F1/32
Filed: 1935-01-23
Abstract: 450,518. Control systems for lamps. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and WHITELEY, A. L., 16, Vernon Avenue, Rugby. Jan. 23, 1935, No. 2237. [Class 38 (iv)] In a lighting system particularly for stage lighting, in which the voltage in the lamp circuits and hence the intensity of illumination is controlled as described in Specification 407,073 by a grid controlled discharge device and rectifier, the voltage applied to the grid is the sum of that on two associated potentiometer devices, either of which may be preset for a given intensity, means being provided for fading the intensity of illumination from that due to one potentiometer device to that due to the other preset device. The grid of the discharge device 1 is supplied through a rectifier from lead 17 supplied with A.C., the voltage of which is the sum of that across the condensers 31, 3<2> each forming part of its potentiometer unit A1, A2. When the core in coil 2<1> of unit A1 is fully in, coil 2<1> and condenser 4<1> are in parallel resonance so that the voltage across condenser 3<1> is substantially zero. As the core is withdrawn, the combination 2<1>, 4<1>, departs from resonance and gradually goes into series resonance with condenser 31 thus gradually raising the voltage across 3<1> to a maximum. Unit A2 may be similarly adjusted. The available A.C. is divided between the units A1, A2, according to the adjustment of a variable voltage device 6. When this device is at one extreme of its regulating range, its voltage is added to that due to the part 11-13 of the winding of transformer 5 so as to give maximum voltage across series condenser 31 of unit A1. At the same time it neutralizes the voltage due to part 11, 12 of transformer 5 so that the voltage applied to unit A2 through transformer 10 is substantially zero. The voltage across leads 17, 8 is then controlled by unit A1 only and its value depends upon the adjustment of coil 21. Coil 2<2> of unit A2 may now be preset to give the required illumination for the next scene and the change from control by unit A1 to control by unit A2 may be effected gradually by adjustment of voltage varying device 6. In a similar way unit A1 may be preset when unit A2 is in control. Other associated pairs of units may be supplied from lead 17 and through secondaries 14, 15 of transformer 10.
Patent GB-371875-A (GB)
Title: Improvements in ratchet driving gear for counters and other measuring instruments
IPC: G01F15/06
Filed: 1931-01-23
Abstract: 371,875. Ratchet gearing. PINTSCH AKT.-GES., J., 71, Andreasstrasse, Berlin. Jan. 23, 1931, No. 2302. Convention date, Feb. 3, 1930. [Class 80 (iii).] Ratchet gearing comprises two pawls and ratchet wheels so disposed that, at the end of each of a series of withdrawal strokes of equal extent, one of the pawls is differently positioned with respect to the ratchet teeth with which it next engages. Reciprocating links 3, 4 are pivoted to levers 5, 6 carrying pawls 7, 8 each engaging a respective ratchet wheel. The ratchet wheels are connected together and have different numbers of teeth, the error caused by varying idle strokes of the pawls with varying strokes of the links 3, 4 being thus minimized. In a modification, Fig. 3, the ratchet wheels have the same number of teeth but are connected by gearing 28 which causes one wheel to advance relatively to the other. In this form, only one actuating arm is provided and is pivoted to a lever carrying two pawls.
Patent GB-385454-A (GB)
Title: Improvements in casement windows
IPC: E06B3/34
Filed: 1932-01-26
Abstract: 385,454. Casement windows. DABBS, W. C., 143, Footscray Road, Eltham, London. Jan. 26, 1932, No. 2339. [Class 20 (iii).] A casement window of the kind comprising a sash hinged to an intermediate frame which is hinged to the fixed frame, is characterized by the provision of flanges on the intermediate frame B adapted, when the sash is closed, to enter recesses in the sash C and frame A, and by a fastening F, which is passed through a slotted lug E on the intermediate frame and engages a lug D on the fixed frame when the window is closed.
Patent GB-509053-A (GB)
Title: Improvements in apparatus for temporarily laying electric cables
IPC: H02G1/04
Filed: 1938-01-25
Abstract: 509,053. Winches. KEMPE, I. T. Jan. 25, 1938, No. 2379. [Class 78 (v)] A winch for temporarily laying cables from a travelling vehicle is furnished with positively driven draw-off gripping rollers b between which the cable d passes, the rollers b being driven by a flat belt c passing over a pulley e on a roller shaft and over the coiled cable on the storage drum a. The speed of the rollers b is thus proportionate to the pay-off speed of the cable. To tension the belt c, the roller assemblage may slide on guide bars k and be pressed by a spring l<1>, or be mounted on a spring-pressed pivoted arm or the drum may be carried on pivoted arms and by its weight tension the belt, or a jockey pulley may bear on the belt. The drum may be motor-driven to unwind the belt, or may be turned by a handle h through multiplying gearing and a free-wheel clutch. To re-wind the cable, a temporary handle may be attached to the other side of the drum, or the drum may be taken off its shaft and replaced reversed. To facilitate this latter operation the gear-box i together with the drum may be tilted up about a spindle i<1>. Fig. 5 shows a modification in which the roller shaft is directly driven from a poweroperated pulley m and drives the drum a through the belt c. Specifications 469,620 and 487,513 are referred to.
Patent GB-174632-A (GB)
Title: Improvements in or relating to heating radiators
IPC: F28F21/08
Filed: 1922-01-26
Abstract: 174,632. Cabanes, E. Jan. 27, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Radiators. - Radiator units are constructed with projecting inclined ribs e forming air passages when the units are abutted. The sections may be joined by annular projections round the openings f at top and bottom, fitting into corresponding grooves on adjacent elements, or by autogenously welding a tube along the top and bottom with openings to each section.
Patent GB-1010248-A (GB)
Title: Treating metals
Inventor: BIRIUKOVA VALENTINA NICKOLAVEN
IPC: C21D1/46
Filed: 1964-01-21
Abstract: <PICT:1010248/C6-C7/1> A vessel 1 for containing a molten salt or alkaline bath for the heat treatment of metal articles comprises a downwardly open shield S, whose lower rim dips into the bath during operation, and means for passing liquid into the shield to contact, and thereby cool, the bath.  The shield may comprise two screens 5 which overlap the open ends of a screen 2 which is of inverted U-shape in cross-section. Liquid, e.g. water, enters the shield via a tube 3, impinges upon the plate 4, thereby forming a spray which falls upon the bath.  The bath may also be cooled and stirred by air which is blown through ducts 6.
Patent GB-210284-A (GB)
Title: Improvements in or relating to desk trays and the like for holding letters and otherdocuments
IPC: A47B21/04
Filed: 1923-01-29
Abstract: 210,284. Thompson, H. A. Jan. 29, 1923. Contents, facilitating access to; fittings, external.-A desk tray having finger openings in the sides or ends has a raised bottom c with gaps or recesses e, f in its sides or ends which conincide with the openings d in the sides or ends of the tray where they extend above the bottom; the bottom may be inclined as shown to feed the contents towards the end b. The tray is supported on feet h or downward extensions of the sides, and the sides may be recessed at i to fit over the top of a desk &c. In a modification, the recesses e, f are provided by a continuous slot in the bottom of the tray, the two parts of which are held together by cross members.
Patent GB-1479787-A (GB)
Title: Xerographic reproduction apparatus
IPC: G03G15/09
Filed: 1975-01-21
Abstract: 1479787 Developing electrographic images XEROX CORP 21 Jan 1975 [28 Jan 1974] 2646/75 Heading G2H To obviate the short-circuiting effect of conductive carrier particles in a developer, e.g. in a magnetic brush developing apparatus, while suppressing the development of image background areas on a latent charge image bearing photoconductive member, the member is subjected to a corona discharge of opposite sign to reverse the charge on the background areas and the developer applicator is connected to a potential, e.g. earth, common to the backing of the photo-conductive member.
Patent GB-489624-A (GB)
Title: Improvements in or relating to the propulsion of ships' lifeboats and similar craft
Filed: 1937-01-29
Abstract: 489,624. Driving - arrangements for screw propellers. FLEMING, 1. R., and FLEMING, F. E. Jan. 29, 1937, No. 2657. [Class 114] A ship's boat is provided with a driving-arrangement for its screw propeller comprising in combination a hand propelling gear and a prime mover, there being provided a clutch mechanism for coupling and uncoupling the prime mover and a uni-directional driving mechanism between the hand propelling gear and the propeller shaft. Cranks 17 are driven by the hand gearing and mounted on a cross shaft 16 carrying a free bevel wheel 18 which is connectable with a shaft through a uni-directional coupling 19, 20. On the shaft also is a detent wheel 28 which cooperates with either of the fingers 29, 30 for preventing the initial rotation in the wrong direction. The bevel wheel 18 gears directly with a bevel wheel 53 on the shaft of the propeller 52 and opposite it is a second bevel wheel 50 on a shaft 39 which is coupled by gearing with a pinion 38 on a shaft which has a clutch coupling 37 and an ordinary coupling 35 with the prime mover 34. A one-way coupling 40, 41 is connected up when it is desired to use the hand propelling gear for starting up the prime mover 34. The various controls represented by levers 23, 60, 43, 42 may be operated from a single control 66 through cam units 61, 64, 63, 62 respectively. In an alternative form the cam members may be mounted on a transverse shaft.
Patent GB-534377-A (GB)
Title: Improvements in and relating to the mixing of finely-divided powdered materials
IPC: B01F33/40
Filed: 1940-02-13
Abstract: 534,377. Mixing powdered materials. NIELSEN, N. Feb. 13, 1940, No. 2772. [Class 86] Powdered materials which h a v e been rendered fluent as by air currents are mixed by means of one or more propellers which produce a circulation of the materials. As shown in Fig. 1, which shows a silo for cement raw meal, the material is rendered fluent by air currents from valves 3, 4, 8, 9 and is circulated by a propeller 25. Propellers may project from the side of the silo, or may be arranged in apertures in a partition. They may also be arranged to produce a circulation through conduits within, or without, the silo. Specification 439,819, [Group XVIII], and U.S.A. Specification 1,291,137 are referred to.
Patent GB-539662-A (GB)
Title: Improvements in photo-electric devices
IPC: H01J43/22
Filed: 1940-02-13
Abstract: 539,662. Photo-electric cells; electron multipliers. BOSCH, F. J. G. VAN DEN., and VACUUMSCIENCE PRODUCTS, Ltd. Feb. 13, 1940, No. 2783. [Class 39 (i)] In a photo-electric discharge device the light sensitive surface is on the upper side of a perforated sheet-metal plate 12 ; the perforations are conical. Between the plate 12 and a collector electrode are a number of secondary emitting electrodes 16, 17 of the form described in specification 516,621; an accelerator electrode 18 of perforated plate or wire grid or mesh form is placed before each secondary electrode as described in Specification 531,541. A final secondary emitter 19 is arranged beyond the collector electrodes. The orifices in the electrodes 17 and 18 are staggered.
Patent GB-145372-A (GB)
Title: Improvements in and relating to air valve for coke ovens
IPC: C10B21/14
Filed: 1920-01-29
Abstract: 145,372. Ellis, G. B., (Foundation Oven Corporation). Jan. 29, 1920. Valves, reversing and like.-An air-reversing valve for coke ovens &c. comprises a hollow cylindrical valve, Fig. 1, coacting with seatings M, N at opposite sides of the casing, the arrangement being such that in its lower position air is admitted past the upper seating M to the regenerator passage C while in the upper position, burnt gases from the regenerator flow past the lower seating to the exhaust flue G. The valve is shown in its neutral central position. The air enters through an adjustable grid 7 and side ports O, and an adjustable damper J controls the opening to the regenerator. Fig. 6 shows a more compact form which moreover allows of the height of the air inlets 15 being increased sufficiently to admit a supply corresponding to the full cross-section of the valve. The upper seating is formed by an inwardly-turned flange 12, the valve body is decreased in height, and the air supply is regulated by a perforated ring 16. Further, the long arm 22 of the operating-lever is arranged below its pivot instead of above.
Patent GB-586386-A (GB)
Title: Improved apparatus for the extrusion of non-metallic plastic material
IPC: B29C48/05
Filed: 1944-01-17
Abstract: 586,386. Dielectric heating. BRITISH INSULATED CABLES, Ltd., PACKER, J. L., and STEWARD, H. M. Jan. 17, 1944, No. 2872/46. Divided out of 586,158. [Class 39 (iii)] [Also in Group V] In an extrusion machine having a head 8 disposed transversely of the barrel .12, the head includes a high frequency heating device comprising a pair of electrodes, one, 14 being formed by or carried on the wall of the head and surrounding the other 21, which is formed by or carried on a central member supported from the wall of the head. The high tension electrode may be the outer one, but as shown is the inner one and is formed by a metal sleeve 21 supported on an insulating liner built up of ceramic (rutile) rings 25 surrounding a core tube part 18a which is centred by screws 20. The electrode is fed by a coaxial cable 40 which passes through the core tube 18. The earthed electrode is the wall 14, which may be faced with heat-resisting insulating material in which heat is generated to prevent chilling of plastic material as it flows past the earthed electrode. The head may be fitted with a steam jacket. The electricity supply may be controlled by the starting member for the motor which drives the machine, the heat being switched on 15 seconds before the motor moves and switched off 15 seconds after the motor stops. A wire to be coated travels through the tube 18. Specification 586,158 is referred to. According to the Provisional Specification the machine may make tubes.
Patent GB-172879-A (GB)
Title: Improvements in cylinder heads for internal combustion engines
IPC: F02F1/38
Filed: 1921-01-22
Abstract: 172,879. Romeyn, J. Jan. 22, 1921. Cylinders, construction of and cooling.-A cylinder head or the parts thereof exposed to the hot gases are constructed by forging or stamping from iron or steel or by cutting the water spaces k in a block d and securing a cover-plate e by welding.