baber/WOPTO huggingface dataset:
Patent GB-664001-A (GB)
Title: Improvements in dust extracting devices
IPC: B04C5/28
Filed: 1949-09-01
Abstract: 664,001. Cyclone separators. AKTIEBOLAGET SVENSKA FLAKTFABRIKEN. Sept 1, 1949 [Sept. 4, 1948], No.,22717/49. Class 23 In an arrangement wherein small cyclone separators 2 are arranged in parallel at a wall 1 across a passage 31 to extract dust from gases in the latter and to discharge the dust to an outlet 34, the wall is constructed of elements each of which is formed with a channel open towards the inlet side of the wall, and with at least one duct lying parallel to the channel, holes being provided in both channel and duct for connection to the inlet and outlet ends respectively of the cyclones, the latter being arranged in line at the outlet side of the wall element, and the axis of each cyclone forming an acute angle with the longitudinal direction of the duct to facilitate the fall of dust therethrough. As shown in Fig. 6, a wall element comprises a central channel 18, flanked by ducts 16 and 17 each of which is provided with a row of cyclones, the inlet tubes of each pair of cyclones being joined to a common tube which is connected to one of a series of apertures 21 in the channel.
Patent GB-965645-A (GB)
Title: Load carrying apparatus
Inventor: SMITH PAUL LOUIS
IPC: B65G51/03
Filed: 1963-06-07
Abstract: 965,645. Sliding trucks. DOUGLAS AIRCRAFT CO. Inc. June 7, 1963, No. 22720/63. Heading B7B. A truck for use on a floor 28 provided with truck-operated air discharge valves 32 comprises an upper surface 20 supported by trusswork 18 from the composite lower wall having a compressible middle layer 24 and a lower layer 26 of ply, linoleum &c. Through this lower wall are provided bleed passages 42 leading to interior of the truck so that when the pivoted valve 52 is opened the friction-reducing air film under the truck is bled-off to render the truck immobile. Operation of the handle 48 effects the opening and closing of the valve 52. U.S.A. Specification 2,918,183 is referred to.
Patent GB-962604-A (GB)
Title: Improvements in or relating to brushes
IPC: A46B13/00
Filed: 1962-06-14
Abstract: 962,604. Brushes. R. E. COX. May 24, 1963 [June 14, 1962], No. 22861/62. Heading A4K. In a power-driven rotary brush, rows of bristles 15 are mounted on the outer edges of flexible rubber or plastic strips 11 secured to shaft 10 by collar 12. Nylon bristles may be secured in holes in the strips or be fastened by staples 16. The strips 11 may be supported laterally by inflated rubber tubes placed between them and they may have curved outer edges. The use of strips of cloth instead of bristles is referred to.
Patent GB-784453-A (GB)
Title: Improvements in centrifugal straining and separating machines having means for washing and drying the separated solid particles
IPC: C13B30/06
Filed: 1955-08-09
Abstract: 784,453. Centrifugal strainer separators. CONSTRUCTIONS GUINARD. Aug. 9, 1955 [Aug. 11, 1954], No. 22924/55. Class 46. In a centrifugal straining and separating machine in which a rotating cone 1 provided with scrapers 2 rotates coaxially within a rotating truncated basket 3 but at a different speed, the scrapers 2 drag the solid along to a washing zone where the positive action of the scrapers does not operate, the conical member 1 carrying helical scrapers 2 which are nicked at 10 to provide the inoperative zone where water discharged from the centre of the cone through passages 9 washes the accumulated solids, preferably against an horizontal conical collar 11 on the cone, before escaping through the perforations 16 of the basket 3. A second series of nicks 15 delays the progress of the washed solids to provide a drying period.
Patent GB-1424879-A (GB)
Title: Method of forming electrodes and conductors and articles made thereby
IPC: H01G4/12
Filed: 1973-05-14
Abstract: To avoid the use of rare metal electrodes in the manufacture of capacitors and hence to avoid firing of the conductive material, the particular end zone of the sintered ceramic object is provided with a metal-containing boundary layer. These boundary layers can then represent end electrodes and can also contain a ceramic material.
Patent GB-603350-A (GB)
Title: Improvements in or relating to waterproof capes and neck bands therefor
IPC: A45D44/08
Filed: 1946-08-01
Abstract: 603,350. Capes. SHEATHER, B. Aug. 1, 1946, No. 22971. [Class 141] A waterproof cape for use in hairdressing is provided with a neckband of resilient spongy material such as sponge rubber. This band may be continuous or split at a point 5, as shown. In the latter case, a slit 3 is also provided in the cape 1 to allow it to be fitted round the wearer's neck, tapes 6 being provided for tying purposes.
Patent GB-1254256-A (GB)
Title: Hairspring and regulator
IPC: G04B18/02
Filed: 1970-05-12
Abstract: 1,254,256. Watches. TIMEX CORP. May 12, 1970 [May 28, 1969], No.23026/70. Heading G3T. In a watch regulator 19 comprising a pivoted arm 20 having an aperture 22 through which passes a hairspring 17 whose outer end is fixed at 18 to a bridge 16, contact between the hairspring 17 and the arm 20 is made only over part of the width of the hairspring by means of an arm contact portion 24. The width of the portion 24 is preferably less than one third of the width of the hairspring 17 and the arrangement is stated to permit the watch to maintain its initial rate. The contact portion 24 may be on the radially outer surface of the aperture 22, and may alternatively comprise a shoulder (28), Figs.3 and 3A (not shown) on a pin (26) fastened to the regulator arm.
Patent GB-480306-A (GB)
Title: Improvements in and relating to methods of testing the power of electrical appliances
IPC: G01R31/333
Filed: 1937-08-23
Abstract: 480,306. High tension switches. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 23, 1937, No. 23071. Convention date, Aug. 21, 1936. [Class 38 (v)] [Also in Group XXXVI] Switches or fuses are tested by means of separate current and voltage sources so arranged that the change in current taking place upon the extinguishing of the arc between the switch contacts causes the test voltage to be impressed on the path of the arc, the release of the voltage impulse being obtained by the employment of the second derivative of the current d2 i.dt<2>. A generator 1 supplies current to the switch 3 to be tested, through choke coils 2, the switch 3 having to undertake the interruption of the short-circuit current. In parallel with the switch 3 is an impulse circuit containing a three-electrode spark-gap 4, 5, 6 and a condenser 7 which is charged from a transformer 9 through a rectifier 8. The spark-gap 4, 5, 6 is so adjusted' that it does not break down under the influence of the voltage on the condenser 7 applied when the switch 3 is closed. In parallel with one of the choke coils 2 is a circuit containing a resistance 10 and a condenser 11. The voltage across the resistance 10 due to the short-circuit current i flowing through the coils 2 and switch 3 is proportional to d<2>i.dt<3>, and is impressed between the electrodes 4, 5 of the spark-gap. The peak value of this voltage, together with the voltage of the condenser 7, is sufficient to break down the spark-gap and allow the condenser voltage to be impressed on the switch 3, which has opened in the meantime. Two separate threeelectrode spark-gaps and two separate impulse systems 7, 8, 9 delivering impulses of opposite polarity may be provided. Ignition takes place only in that spark-gap in which the potential difference is increased by the voltage across the resistance 10. Specification 474,140 is referred to.
Patent GB-819531-A (GB)
Title: Improved method of and means for attaching perforate materials to metal members
Inventor: GIBBS BERNARD JAMES
IPC: E04F13/04
Filed: 1956-07-26
Abstract: 819,531. Lathing. LIGHT STEEL SECTIONAL CONSTRUCTIONS Ltd. July 3, 1957 [July 26, 1956], No. 23131/56. Class 20(4) [Also in Group XXV] Expanded metal, perforated lathing material, &c. 1 is secured against the flat face 2 of a hollow conduit, or a T-section member &c., Fig. 1, to form a partition or ceiling structure, by a spring clip 3 having bent-over end portions 3a adapted to extend through openings in the perforate material and engage flanges 2a on the said conduit. The intermediate portion of the clip is preferably curved as shown. In a modification, Fig. 4, the end 3d of the clip extends through a slot 6b in the web of the channel-section member, the end 3a being formed as above for engaging one edge of a flange 6a thereof. A pressure dispersion member 7 may be associated with the clip; for example, it may be threaded through two parallel slots 8 provided in the clip, Fig. 5. Specification 783,403 is referred to.
Patent GB-846135-A (GB)
Title: Improvements in or relating to voltage-and current regulating systems of dynamos
IPC: H02J7/24
Filed: 1957-07-22
Abstract: 846,135. Automatic voltage control systems. ETABLISSEMENTS DUCELLIER. July 22, 1957 [July 24, 1956], No. 23156/57. Addition to 810,137. Class 38 (4). Three further embodiments are added to the automatic voltage-regulating system for a selfexcited D.C. generator disclosed in the parent Specification in which the field current is varied under the control of a transistor. In the first, Fig. 1, there are three generators 1a, 1b, 1c in parallel. Each has a carbon-pile regulator e.g. 7a in series with the field winding 2a, the control coil 6a of the regulator being the collector circuit of the transistor 11a. The base/emitter circuit includes a reference voltage 12a, a portion of the output voltage tapped off a potential divider 16a, 17a, and a voltage proportional to load current-to effect load sharing-across a shunt 13a. In the second, Fig. 2 (not shown), a vibrating contact regulator is used, provided with a second control winding connected across the generator output to provide compensation for changes in current in the main winding due to changes in the temperature of the transistor. In the third, Fig. 3, the current-in the field 2 is controlled directly by a transistor 27, the base/emitter circuit of which is directly coupled to an NPN transistor 26 which is controlled in accordance with the difference between the output voltage and a reference source 12.
Patent GB-906023-A (GB)
Title: Improvements in or relating to coal cutting machines
Inventor: CAMDEN WALTER
IPC: E21C25/10
Filed: 1958-07-18
Abstract: 906,023. Mineral-mining machines. HEELEY (MINING MACHINERY) CO. Ltd. Dec. 23, 1958 [July 18, 1958; Aug. 5, 1958; Oct. 11, 1958], Nos. 23179/58, 25094/58 and 32537/58. Class 68 (1). The external surface of a cutter drum of a mineral mining machine is formed with helical flutings 15 for moving mined mineral axially of the drum. The flutings are defined by the rear and front surfaces 12, 13 of adjacent pickcarrying structures of cross-sections tapering outwards of the cylindrical body of the drum, the structures being secured to the body by welding. Each structure makes less than a complete revolution of the drum in extending axially along the drum.
Patent GB-602015-A (GB)
Title: Improvements in or relating to electrically-operated card printing and/or perforating equipment
Filed: 1945-09-08
Abstract: 602,015. Operating clutches. CREED & CO., Ltd., DREWELL, W. B., and KIRK, S. E. Sept. 8, 1945, No. 23194. [Class 80 (ii)] [Also in Groups XVI and XIX] i Means for putting a motor in gear with a printing control shaft for one revolution thereof in a workmen's time-recorder (see Group XIX), comprise a solenoid, energization of which causes levers 14, 17 to release a detent 20 from a projection on a dog clutch member 21 which is then urged by a spring 29 into engagement with a dog clutch member 24 driven by the motor. As the member 21 rotates its projection tilts the lever 17 so that one arm of the lever 20 rides on the surface 17A, while the other arm springs back into the path of the projection and arrests rotation after one revolution. When the solenoid is de-energized, the lever 17 relatches the lever 20.
Patent GB-1345577-A (GB)
Title: Double balanced microwave device
IPC: H03D7/14
Filed: 1971-04-19
Abstract: 1345577 Frequency changers; variable attenuators RHG ELECTRONICS LABORATORY Inc 19 April 1971 [24 Feb 1970] 23251/71 Headings H3T and H4R [Also in Division H1R] A double balanced microwave device comprises a diode bridge assembly 11-14, Fig. 3, having four substantially matched diodes, first means 20 for directly supplying a first input signal, second means 24 for directly supplying a second input signal and third means, i.e. chokes 27-30 for directly taking an output signal, wherein first and second balanced microstrip baluns 41, 43 respectively, Fig. 4, are placed respectively between the first and second means and the bridge 38, the substrate 33 of the baluns having a higher dielectric constant than that of the surrounding medium and the metallic strip on one side plane of each of the baluns being tapered as a function of the distance from the first and second means to the diode bridge. In the embodiment the substrate, e.g. of alumina, is secured to supporting shelves 65 formed in an enclosing metal box, and an RF absorbing material 34 is placed around the circumference of the substrate, between its edge and the housing; absorbing material may also be placed on the surface of a cover-plate (Fig. 4A, not shown). The diode bridge 38 is located in an aperture 39 in the substrate 33; the specification describes construction of suitable bridge networks, which may comprise beamlead Shottkey diodes [see Division H1]. The arrangement is primarily intended for use as a microwave mixer, capacitors, e.g. 52, Fig. 4, being located in the connections between the baluns and the diode bridge to prevent loss of I.F. signal. It may alternatively be used as an attenuator, signal being supplied and taken off via respective baluns, the attenuation produced by the diode bridge being varied by means of a control voltage applied to what is the I.F. output terminal in the case of a mixer. The specification also describes known microwave mixers of the rat race, branch line coupler and 90 degree backward wave type (Figs. 1a, 1b, 1c, not shown).
Patent GB-615202-A (GB)
Title: Improvements in and relating to machines for pre-treating plastic materials
IPC: B29B7/18
Filed: 1946-08-06
Abstract: 615,202. Mixing and kneading machines. BATA NARODNI PODNIK. Aug. 6, 1946, No. 23289. Convention date, Sept. 1, 1942. [Class 86] In a machine for the treament of plastic materials, particularly of natural or artificial rubber, comprising a kneading chamber and a mixing mill, the kneader and mixing mill rollers are arranged so that the mixing mill roller adjacent to the kneading chamber forms, together with a wedge slide, the closure of the kneading chamber. The plastic raw material is fed into the kneading chamber 2, Fig. 1, through an opening 3 and additional substances may be added through an opening 4. The kneaded material is discharged from the kneading chamber directly into a mixing mill comprising rollers 8, 12, adjustably spaced by screws 15, through an opening normally closed by the roller 8 and a wedge slide 9. The latter carries a detachable scraper blade 10 for removing material from the roller 8 during the kneading operation. The size of the discharge opening can be altered by adjustment of the slide 9; and during milling the material is retained in the milling space by a scraper blade 18 and wedges 16. The kneading roller 6, Fig. 2, has a part formed with helical ribs 26 for compressing and feeding. The plastic material is supplied through the opening 3, and a part formed with helical ribs 25 which at some places do not extend to the walls of the chamber 2 and which knead and mix the plastic material and anv additional substances fed through the opening 4. A cooling fluid is passed between ribs 5 on the casing 2 for removing the heat developed during kneading. In an alternative construction. two parallel kneading rollers are provided in a chamber having a single charging opening, the whole surface of each kneading roller being provided with kneading and mixing ribs similar to the ribs 25. 615,203. Recovering metals from scrap. INTERNATIONAL ALLOYS, Ltd., and BACON, F. G. Aug. 6, 1946, No. 23291. [Class 82(i)] [Also in Group XII] The components of mixed scrap metals, particularly aircraft scrap, are separated in a furnace comprising an upper hearth 1 fed from a charging platform 8 by conveyers 9 and connected to a lower hearth 3 by a vertical shaft 2, burners (not shown) opening into the furnace just above the lower hearth, and controlled draught flues 4. The upper hearth is traversed by channels 14 for the collection of low melting point metals and has raking doors 10 from which the material can be moved into the shaft 2. Impact on the hearth 3 separates aluminium which is melted and collected in the discharge spout 13, the metals of higher melting point being removed through raking doors. The upper melting hearth may have a lining of corrugated cast iron with holes feeding the channels 14.
Patent GB-1316382-A (GB)
Title: Determination of the colour of diamonds
IPC: G01N33/38
Filed: 1971-04-19
Abstract: 1316382 Photoelectric colour measurement M EICKHORST 19 April 1971 [13 March 1970] 23410/71 Heading G1A The colour of a cut diamond 24 in a holder 2 is determined by comparing the absorbing powers of the diamond at two predetermined wavelengths the light being incident via a light conductor 1 on the upper planar surface of the diamond, whence it is totally internally reflected and passes via a second conductor 5 to a photo-cell 11, e.g. a photo-resistor or photo-multiplier. The two wavelengths are provided by a rotating filter wheel 8, and the photo-cell output is demodulated (12) and divided into two channels 18, 19. To calibrate the apparatus, a plane mirror is placed in the holder. The output on channel 18 is made equal to a pre-set level on a setting device 13 by adjusting the photo-cell sensitivity by means of a regulator 14. Next the matching device 15 is adjusted so that the outputs of the two channels as indicated at 16, are equal. The mirror is now replaced by a cut diamond, and regulator 14 is again adjusted to give the output on channel 18 the pre-set value. The difference between the outputs of the two channels indicates the relationship between the absorptions at the two wavelengths and hence the colour of the diamond. Reflection losses are minimized by an annular mirror 3 located around the diamond. Conductor 1 is a fibre optics bundle while conductor 5 may be such a bundle or cylinder with inwardly arranged mirrors. More than two filters and detecting channels may be employed.
Patent GB-581275-A (GB)
Title: Improvements in and relating to the construction of ceilings of plaster or the like in association with reinforced concrete floors
IPC: E04B5/19
Filed: 1944-11-24
Abstract: 581,275. Ceilings and floors. CREEDON, M. Nov. 24, 1944, No. 23459. [Class 20 (iv)] Ceilings on which moisture will not readily collect are formed by plaster slabs or like elements having a plane undersurface, longitudinal ribs 2 or the like on the upper surface for engaging a reinforced concrete floor 5, and air passages 3 extending completely through the slab transversely to the ribs and adjacent the plane surface. The slabs shown in Fig. 4 are provided with rabbeted engaging edges and some have apertures 7 in the side walls, by which the air passages 3 communicate. Fig. 6 shows slabs in which the ribs are enlarged and hollow, and form filler blocks for the concrete floor. The passages 3 communicate by apertures 10 with the two end passages 8 in the ribs, the latter passages communicating by vents 11 with the exterior of the building.
Patent GB-645986-A (GB)
Title: Improved rear wheel suspension for motor vehicles
IPC: F01B1/06
Filed: 1948-09-08
Abstract: 645,986. Vehicle suspensions. FIAT SOC. PER AZIONI. Sept. 8, 1948, No. 23634. [Class 108(ii)] In a motor vehicle having a rigid rear axle and helical springs between the axle and the frame, connecting means between the axle and the frame, comprise firstly two longitudinal arms each articulated at one end to the frame and connected at its other end to the axle, and secondly a cranked rod attached at its ends to the frame and at its centre to the axle centre. The longitudinal arms may be rigid or leaf springs. In Figs. 2 and 3 the rear axle casing 5 is sprung from the frame 1 by two helical springs 29. The axle is located by leaf springs 60, articulated to the frame at 11 by means of rubber bushes, and rigidly secured to the axle casing by brackets 54 to which are also attached the shock absorbers 33. A cranked rod 45 is secured at its ends to the frame 1 by rubber bushes and to the top of the differential housing at 51, also by rubber bushes. The cranked rod may be located either behind the axle as shown at 45 or in front as shown in broken lines at 45<SP>1</SP>. The radius R, Fig. 3, of the longitudinal arm should be considerably greater than the radius r of the crank. In another example, Fig. 6, the longitudinal arm 22 is a rigid tapered member, articulated at one end to the frame at 11 by a rubber bush as above, and rigidly connected at its other end to the axle casing by a bracket 24 and bolts 26 which also secure the seating 28 for the helical spring 29. The ends of the cranked rod 45 are secured to the frame by rubber bushes carried by brackets 40, and the cranked portion is mounted by a rubber bush to the bracket 49 welded to the differential housing. The cranked rod 45 may be made in two parts screwed together, and connected to the frame and the differential housings by threaded couplings.
Patent GB-425002-A (GB)
Title: Improvements in and relating to slicing wood for making ply-wood
IPC: B27L5/06
Filed: 1934-08-16
Abstract: 425,002. Slicing wood. UBERSEEHOLZHANDELS AKT.-GES., Chur, Switzerland. Aug. 16, 1934, No. 23660. Convention date, Aug. 16, 1933. [Class 145 (i)] The table a of a machine for cutting thin slices from wood has fixed hooks f and hooks g moved by screw and nut mechanism i, j; the hooks engage a plate l which is fixed by screws m to the flattened undersurface of the log e. The table a is raised by screw spindles upon each return stroke of the reciprocating knife c in known manner.
Patent GB-1280109-A (GB)
Title: Buffing device
Inventor: MOSS THERON VICTOR
IPC: B24D13/14
Filed: 1970-05-15
Abstract: 1280109 Abrasive tools T V MOSS 15 May 1970 23736/70 Heading B3D A buffing device comprises a support 2, Figs 1 and 2, and at least one longitudinally extending coiled wrapping of yarns 3 attached to one surface of the support, the wrapping being collapsed substantially centrally longitudinaly thereof and having looped yarns 8, 9 on opposite sides of the collapsed control section. The yarn may be in the form of strands, cords or the like of cotton, rayon, nylon or other synthetic plastic. The yarns are placed on a support, such as a table or conveyer and formed as a longitudinally extending wrapping which is then collapsed along its length and secured, at the collapsed region, to a backing 6 of canvas or fabric by one or more rows of stitching 4, 5 or the like. The wrapping may be wound in concentric circles or upon itself into a convolute configuration (11, Fig. 3) and secured by a cord 14, Fig. 4, passing through stages 13 or by adhesive to a support disc. In another embodiment, the buffing device has a plurality of spaced apart wrappings (21, 22, 23, Fig. 8). For a soft buff, the hoops may be cut. In a further embodiment, the wrapping is secured to the edge of a disc 30, Fig. 10, by a wire 33 and clamping of side pieces 35, 36 and the ends of the loop 32 may be cut.
Patent GB-423346-A (GB)
Title: Improvements in gaiters for personal wear
IPC: A41D17/00
Filed: 1934-08-17
Abstract: 423,346. Gaiters. PONCE, I. DUPRAT-, 2, Rue de la Republique, Lyons, France. Aug. 17, 1934, No. 23765. Convention date, Nov. 24, 1933. [Class 141] Gaiters are made with the opening on the inner side of the leg and extending to near the lower edge, leaving a tongue 4 to which an elastic band 5 is attached. The opening is preferably oblique as shown, and is closed by a zip or other fastening on the inside so as not to show. The edges of the opening may be faced with a resilient strip, such as thin steel. A dummy seam with buttons is provided on the outer leg side.