baber/WOPTO huggingface dataset:
Patent GB-856662-A (GB)
Title: Improvements in or relating to grinding wheels
IPC: B24D5/08
Filed: 1958-05-12
Abstract: 856,662. Abrasive wheels. BISTERFELD, E., [trading as BISTERFELD & STOLTING]. May 12, 1958 [May 13, 1957 ; Oct. 3, 1957], No. 15080/58. Class 60. A grinding wheel comprises two or more grinding discs, Figs. 1 and 2, spaced apart axially and rigidly secured to one another to form a unitary structure, each disc having a diameter which is large compared with its thickness. The discs, which may consist of abrasive, such as corrundum, silicon or boron carbide, and fabric inlays bonded ceramically or with a thermosetting or thermoplastic synthetic material, e.g. phenolic or cresolic resin, are mounted on a hub 2 and spaced apart by tubular metal or paper members 3 preferably having toothed engagement with the discs, in order to aid resistance against centrifugal force, and cemented to the discs by an adhesive or the like. In another embodiment, the discs may be separated by metallic or non-metallic honeycombed or corrugated plates 3, Fig. 3, cemented or welded thereto. Plastic distance pieces or hollow metal plates may be used in place of the plates 3. In a further embodiment the discs may be moulded with ribs 4, Fig.5, which are preferably radially disposed and cemented to adjacent discs which may or may not have similar ribs. Alternatively, the ribs may be formed by inserting a rotary milling tool 7, Fig. 1, radially into a wheel of large thickness before final firing and rotating the wheel so that the tool cuts a slot 5, Fig. 7, leaving ribs between the discs 1. In the embodiment shown in Fig. 8, the discs are formed with concentric or radial grooves and projections having surfaces 15 which are adhered together ; the spaces 16 between the grooves may be filled with a suitable material. It is stated that the wheel can be sued for grinding semi-finished workpieces which are in a warm condition and that a high grinding rate may be achieved by presenting the wheel to flat workpieces at a predetermined angle 9 to 9<SP>1</SP>, Fig. 2, and to cylindrical workpieces 8 with the axis of the wheel. perpendicular to the axis of the workpiece.
Patent GB-277422-A (GB)
Title: Improvements in handles for percussion drills, jumpers or the like
IPC: B25G1/00
Filed: 1926-06-15
Abstract: 277,422. Rawlings, J. J., and Rawlplug Co., Ltd. June 15, 1926. Addition to 271,953. Key wedges for socket fixings.- The drill, chisel, jumper &c. handle or holder a of the parent Specification, in which the tool c is secured in the axial hole b by a taper cotter d passing through an oblique hole e in the holder so as to engage a flat f on the tools, and having its smaller end directed upwardly away from the cutting end of the drill, is formed with a flat-transverse surface at the inner end of the hole b acting as an abutment to the correspondingly formed end of the tool c. A suitable angle between the axes of the tool and cotter is 75‹ and the cotter may have a tapered flat inclined about 3‹.
Patent GB-560265-A (GB)
Title: A method of propulsion for aircraft
IPC: B64D39/00
Filed: 1942-10-30
Abstract: 560,265. Propelling aircraft. BENTLEY, L. Oct. 30, 1942, No. 15229. [Class 4] Propulsion means for air craft comprises a series of short tubes d connected to a chamber from which air is removed and a cone or other shaped container bl fixed by brackets a near the mouth of each tube with clearance between it and the internal surface of the tube. The currents of air c through the clearance space create a pressure inside the container as indicated at b, which constitutes the motive force. The tubes may be arranged inside or outside the fuselage and taps or stop-cocks may be disposed between them and the chamber and may be controlled to effect steering and navigation of the aircraft.
Patent GB-553610-A (GB)
Title: Improvements in and relating to brassieres
IPC: A41F1/00
Filed: 1941-11-26
Abstract: 553,610. Brassieres. KEMP, V. F., and KEMPAT, Ltd. Nov. 26, 1941, No. 15243. [Class 141] The shoulder straps c, d, Fig. 1, of a brassiere pass through loops or rings k, I on the body straps g, h, the other ends of which are secured by buttons, press studs, or hooks and eyes &c. to tabs i, j at the inner base angles of the breast pockets a, b. In a modified construction, Fig. 2, the shoulder straps also pass through loops m, n secured to the backs of the pockets. In a further modified construction, the shoulder straps may be secured to the ends of fabric links secured to the backs of the pockets in the same region as the loops m, n.
Patent GB-928185-A (GB)
Title: Improved voltage indicator tubes and apparatus including such tubes
Inventor: FREEMAN GEORGE STANLEY PERCIVA
IPC: H01J31/14
Filed: 1960-05-02
Abstract: 928,185. Cathode-ray tubes. BUSH & RANK CINTEL Ltd. May 1, 1961 [May 2, 1960], No. 15290/60. Class 39 (1). A voltage indicator tube comprises a cathode 2 at or near one end of a first elongated electrode 3 provided with a longitudinal slot 11, a second elongated electrode 4 parallel to the first, an electron-permeable electrode 12 capable of sustaining a substantial potential gradient along its length disposed within or adjacent the slot, and a fluorescent screen 13 disposed for excitation by electrons passing through slot 11. As shown, electrons follow trochoidal paths 10 under the influence of crossed electric and magnetic fields in the space between electrodes 3, 4, electrode 3 being at cathode potential and electrode 4 a few volts positive, and a magnet 5 being provided outside the tube. Electronpermeable electrode 12 may comprise parallel resistive wires, or a mesh of, or coated with, highresistance material, connected at its cathode end to a negative potential and at its far end to the voltage to be indicated so that electrons pass through electrode 12 at a point depending on the indicating voltage and are accelerated by grid 14 or a conductive coating on or below phosphor layer 13.
Patent GB-566561-A (GB)
Title: Sheets for loose leaf binders
IPC: B42F3/00
Filed: 1943-09-17
Abstract: 566,561. Filing papers. MARTIN, R. Sept. 17, 1943, No. 15312. [Class 146 (i)] In sheets for use with loose-leaf binders, which have several sets of filing- perforations 3, 4 extending inwardly from the binding- edges 2, so that the sheets may be filed with their free edges in overlapping relation to exhibit columns of totals &c., the sets of perforations are formed at different distances apart, so that a variable width of margin can be exposed. For example, the two outer sets may, as shown, be spaced apart twice the distance of the inner sets, so that the lowermost sheet exhibits two columns of totals. When the inner perforations are used, the margins bearing the outer ones are torn off or folded underneath.
Patent GB-593642-A (GB)
Title: Improvements in or relating to operating mechanisms for interconnectable steering devices
IPC: B64C13/00
Filed: 1945-06-18
Abstract: 593,642. Fluid-pressure servomotorcontrol systems. BLACKBURN AIRCRAFT, Ltd., and TOPLIS, J. G. June 18, 1945, No. 15389. [Class 135] An auxiliary steering device is actuated from a main steering device through a servo-mechanism provided with a follow-up linkage which operates a valve controlling the application of a positive or negative fluid pressure to a double acting jack or pair of jacks connected to the auxiliary steering device. The invention is applicable to the inter-connection of the rudder of an aeroplane and a steerable nose or tail wheel, the air 'and water rudders of a flying boat, or the main and auxiliary rudders of a ship. In an embodiment in which air under pressure is employed as the motive force of the servo-motor, the rudder 21 of an aeroplane is actuated from a link 33 through a lever 34, the latter being connected through a link 3 to a floating lever 4 which controls the position of a two-landed piston valve 17 connecting jacks 13, 14 selectively to the source of pressure fluid and to atmosphere. The incoming pressure air is applied to the two ends of the movable part of the valve to balance the latter. The resulting movements of the jacks are applied to a see-saw lever 6 and so to a shaft 10 connected to the steerable wheel on the aircraft. Movement of lever 6 re-centres valve 17 through a link 7 connected between levers 4 and 6. When it is desired to couple the two steering devices together so that the auxiliary steering device is actuated from the main steering device, a valve 27 is turned by a control rod 28 to disconnect conduit 30 from atmosphere and connect it to the pressure supply line 29. Pressure fluid will then flow through a conduit 31 to a cylinder 8 carried by lever 6 and the piston in the cylinder will press a spring-loaded bolt 9 into a recess in the shaft 10 to couple lever 6 and shaft 10 together.
Patent GB-727541-A (GB)
Title: Improvements in and relating to hydraulic shock absorbers or vibration dampers
IPC: F16F9/50
Filed: 1953-06-04
Abstract: 727,541. Hydraulic shock-absorbers. MASTROPAOLO, G. C., and COBIANCHI, L. June 4, 1953, No. 15420/53. Class 108 (3). A hydraulic damper comprises a piston 1 operating in a cylinder 3, which is provided with a liner 2, frictionally slidable under the action of the piston 1, to open and close a series of inlet and outlet ports a, b c, arranged in the cylinder wall at longitudinallyspaced intervals. The damping action increases in proportion to the intensity of the load applied to the damper. The liner 2 is formed with a port 2a. In operation, on inward telescopic movement of the piston-rod 5, the liner 2 is carried down by the piston 1, thus cutting off ports band c successively, and finally the port a. When the liner can move no further, the port a is only half covered. On rebound, a similar action occurs, the ports d and e fulfilling the role of the ports b and a respectively. A vehicle suspension spring may be disposed in the reservoir formed between the cylinders 3, 8.
Patent GB-307253-A (GB)
Title: Improvements in or relating to devices for heating water and for like liquids
IPC: F24H1/18
Filed: 1928-05-25
Abstract: 307,253. Ewart, J. W. May 25, 1928. Boilers; freezing, preventing, circulating attachments for. - In a device comprising a main storage tank 1 and a supplementary tank 2 to which a source of heat is continuously applied, an element 6, or elements, of good heat-conducting material extends partly into the container 2 so as to occupy a considerable volume of the space thereof (e.g. <1>/5th) and the remainder is in close proximity to the source of heat 7. An annular extension 5 may surround the source of heat. The container 2 and connecting pipes 3, 4 may be heavily lagged.
Patent GB-312089-A (GB)
Title: Evaporating method and means therefor
IPC: B01D3/34
Filed: 1929-05-17
Abstract: 312,089. Industrikemiska Aktiebolaget, (Assignees of Oman, E.). May 18, 1928, [Convention date]. Heating arrangements.-Liquids are evaporated and solids are dried in a multiple-effect apparatus in which heat is supplied by a gasvapour mixture not in contact with the liquid or solid, and the vaporized liquid is removed by a current of non-condensable gas. In a quadruple-effect apparatus (Fig. 3) solution is sprayed in at a' - - a<4>, so as to flow in a thin film down heating surfaces; the temperature of the entering solution is lowest at a<1> and highest at a<4>. Air circulated by a pump A<1> flows through the first evaporating chamber c<1> and takes up vapour from the liquid film; it then passes by a pipe d' to the evaporating chamber c<2> of the second effect, and the temperature being higher, the air absorbs more vapour. The process is continued in the third and fourth effects, and the air-vapour mixture leaves by a pipe d<4> leading to a heater C' where it is completely saturated with vapour and raised to a temperature above that of the solution entering at a<4>. The hot air-vapour mixture passing by a pipe g<4> to the heating chamber e<4> gives up a portion of its heat to the evaporating film, and then passes at successively lower temperatures through the heating chambers e<3>, e<2>, e<1>, in each of which it gives up a further portion of its heat. Condensate is removed by pipes f<1> - - f<4>. The air issuing from the chamber e<1>, is finally freed from vapour in a condenser D, and is re-circulated through a pipe H to the evaporating chambers c<1> - - c<4>. Concentrated solution is drawn off by pipes b<1> - - b<4>, and may be returned, with or without preheating, to the corresponding inlets a<1>, a<4>, or to different inlets, as from the outlet b<2> to the inlet a<1>. The pressure in the whole apparatus is kept substantially atmospheric by liquid seals as at E, F, G. Intimate contact between the liquid film and the air current may be obtained by baffles and obstructions as in Figs. 8<a>, 8<b>, 9<a>, 9<b>, 9<c> Several heating or evaporating chambers may be worked in parallel. The method may be applied to the rotating drum type of evaporator.
Patent GB-701888-A (GB)
Title: Improvements in or relating to processes and apparatus for freeze-drying
IPC: F26B5/06
Filed: 1952-06-20
Abstract: 701,888. Drying by freezing and subsequent sublimation. VOGT, A. June 20, 1952 [June 26, 1951], No. 15600/52. Class 34(2) [Also in Group XVII] In a process for the freeze-drying of biological substances &c. to be kept sterile in containers 4 that have been closed under sterile conditions and frozen, the container closure is removed within a vacuum drying chamber 3, the frozen material 5 is dried by sublimation of the ice and the closure restored, all under vacuum. The chamber 3 has parallel walls 1, 2 of which wall 1 has at 9 an aperture for passage of the container neck 7 the shoulder 6 of which fits against gaskets 8. A metal screw cap 17 secures a rubber closure 11, having a sealing rim 12, and a washer 18 and the cap has radial lugs 19. A tool for removing and replacing the closures has a guide casing 21 in which moves a spindle 26 carrying a driver member 25 having slots 27 to engage the lugs 19 of the screw cap 17, the spindle 26 being operable by a handwheel 28. A lip packing 29 provides for vacuum-tight guidance. of the spindle in its casing 21.
Patent GB-763969-A (GB)
Title: Improvements in and relating to pit trucks
IPC: B61H7/08
Filed: 1953-06-05
Abstract: 763,969. Pit trucks. GUTEHOFFNUNGSHUTTE STERKRADE AKT.-GES. [formerly GUTEHOFFNUNGSHUTTE OBERSHAUSEN AKT.-GES.]. June 5, 1953 [June 6, 1952], No. 15600/53. Class 103(4). [Also in Group XXXIV] A pit truck train for surface and underground operation in mining installations comprises a locomotive and a plurality of trucks not provided with braking means and an additional truck having electromagnetic braking shoes adapted to be controlled from the locomotive and to cooperate with the rails to produce a braking force independently of the weight of the truck load. The brake truck, as shown comprises a superstructure having a portion 6 constructed to carry passengers and a portion 7 to carry equipment. The underframe 2 carries pairs of brake shoes 3, 3<SP>1</SP> 4 suspended on springs 8.
Patent GB-221575-A (GB)
Title: Improved vacuum producing apparatus
IPC: F04F5/42
Filed: 1923-06-15
Abstract: 221,575. Greig, J. W. June 15, 1923. Aspirating - apparatus, jet-pump.-In a vacuum jet apparatus the upper inlet end 23 of the conduit 22 is provided with a helix 21 to give rotary movement to the liquid working-fluid and with means at the bottom of the liquid chamber 29 to impart a swirl to the liquid discharging from the conduit 30 to assist in preventing the return of air that is being withdrawn by the ejector device. The conduit 22 decreases in diameter at 22<a> and the port 24 leading to the suction chamber 25 is positioned above a downwardly flared part 31 that opens into the discharge tube 30. The discharged fluid strikes a conical projection 32 to form a swirl of the liquid, when thus escapes through the orifice 33. The port 24 is inclined, as shown, and the chamber 25 communicates with the pipe line 34 provided with a valve 35 and leading to the vessel from which air is to be exhausted.
Patent GB-170048-A (GB)
Title: Improvements in signalling circuits, particularly applicable to telephony
IPC: H04M1/58
Filed: 1920-06-09
Abstract: 170,048. Hackett, P. J. June 9, 1920. Telephone systems and apparatus.-To prevent side tone in a single-line circuit two-way communication system, use is made of two transformers N1, N2, N3, N4 and an auxiliary resistance or balancing-circuit X, the transformer ratios and the impedances are so proportioned that (1) the receiver R is not affected by energy originating in the transmitter T at the same station, (2) the balancing-circuit X and the line circuit L are conjugate, so that no energy is wasted in the balancing-circuit when receiving, (3) the energy delivered by the transmitter to the line is a maximum, (4) the energy delivered by the line to the sub-station is a maximum. Examples of design formulµ are given. Circuit diagrams are also given showing the receiver and transmitter interchanged and used in a commonbattery system, and the arrangement of a differential transmitter both in local-battery and common-battery systems.
Patent GB-457477-A (GB)
Title: Manufacture of thiazole derivatives
IPC: C07D277/84
Filed: 1935-05-29
Abstract: Compounds containing a mercaptoarylthiazole residue and a dinitrophenyl group both linked to the nitrogen atom of a pyridine ring are prepared by treating a dinitrophenylpyridinium chloride with a soluble salt of a mercaptoarylthiazole in an aqueous medium at a temperature below the decomposition temperature of the product, generally at 10--15 DEG  C.  The products decompose when heated and yield dinitrophenyl arylthiazyl sulphides.  Both types of product are useful as vulcanization accelerators.  In the examples, (1) 2 : 4-dinitrophenylpyridinium chloride and sodium 2-mercaptobenzthiazole yield 2 : 4-dinitrophenylpyridinium benzthiazyl sulphide; (2) the product of example 1 is heated, and yields 2 : 4-dinitrophenyl benzthiazyl sulphide; (3) 2 : 4-dinitrophenylpyridinium chloride and 2-mercapto-a -naphthothiazole yield 2 : 4-dinitrophenylpyridinium a -naphthothiazyl sulphide; (4) the product of example 3 is heated, and yields 2 : 4-dinitrophenyl a -naphthothiazyl sulphide; (5) 2 : 4-dinitrophenylpyridinium chloride is treated with the sodium salt of 6-nitro-2-mercaptobenzthiazole, and the product is steam-distilled; 2 : 4-dinitrophenyl 6<1>-nitrobenzthiazyl sulphide is obtained. Specification 352,746 is referred to.ALSO:Compounds containing a mercaptoarylthiazole residue and a dinitrophenyl group both linked to the nitrogen atom of a pyridine ring are prepared by treating a dinitrophenylpyridinium chloride with a soluble salt of a mercaptoarylthiazole.  The products decompose when heated and yield dinitrophenyl arylthiazyl sulphides.  Both types of product are useful as vulcanization accelerators.  In the examples, (1) 2 : 4-dinitrophenylpyridinium chloride and sodium 2 - mercaptobenzthiazole yield 2 : 4 - dinitrophenylpyridinium benzthiazyl sulphide; (2) the product of example 1 is heated, and yields 2 : 4-dinitrophenylbenzthiazyl sulphide; (3) 2 : 4-dinitrophenylpyridinium chloride and 2-mercapto-a -naphthothiazole yield 2 : 4-dinitrophenylpyridinium-a -naphthothiazyl sulphide; (4) the product of example 3 is heated, and yields 2 : 4 - dinitrophenyl - a  - naphthothiazyl sulphide; (5) 2 : 4 - dinitrophenylpyridinium chloride is treated with the sodium salt of 6-nitro-2-mercaptobenzthiazole, and the product is steam-distilled; 2 : 4-dinitrophenyl-61-nitrobenzthiazyl sulphide is obtained. Specification 352,746 is referred to.
Patent GB-789579-A (GB)
Title: Conveyor band installation for the transport of work pieces in factories, packing centres or the like
IPC: B65G47/50
Filed: 1956-05-22
Abstract: 789,579. Endless conveyers. DURKOPP-WERKE AKT.-GES. May 22, 1956 [May 20, 1955], No. 15718/56. Class 78 (1). A conveyer for delivering workpieces at selected stations along its length consists of carrying trays 12 adapted to travel along an upper run in transversely inclined position and along a lower return run in flat position, means for retaining articles on the trays, and means operated from a common supply and discharge point at one end of the conveyer for releasing workpieces from the inclined trays at selected stations. After being operated on at the selected stations, the workpieces are returned via the lower run to the common supply and discharge point. The workpieces are carried in boxes 17. Each tray 12 is provided with raised edges 12<SP>1</SP> on three sides, the remaining side being hinged at 13 to a carrier frame 11 provided with rollers 23 running on rails 24. Each carrier frame is mounted at diagonally opposite corners on two stub shafts 7, 8, the former being secured to chain 5 at one side and the latter to chain 6 at the other side of the conveyer. The reversing sprockets 1, 3, Fig. 5, for the respective chains 5, 6 at each end of the conveyer are located one in advance of the other, the separation of the axes being equal to the longitudinal distance between each pair of stub shafts 7, 8, so that the carrier frames remain horizontal throughout their path. A roller 14 is attached to the underside of each tray 12 for engagement with a camming rail 16 on the upper run, whereby the trays are tilted to inclined position throughout the upper run. The hinges 13 of successive trays are located alternately on opposite sides of the frames 11 so that the trays are alternately inclined towards opposite sides of the conveyer. An inclined receiving surface 25 is positioned along each side of the conveyer and at each station an inclined surface 27 leads down to a surface 26 located adjacent the lower run. The boxes 17 are normally retained on the trays 12 by pivoted levers 18 on the undersides of the trays which project through slots 20 in the trays. The lower ends of the levers are positioned for contact with a series of retractable stops 22 actuated by electromagnets 21 or by mechanical or hydraulic means. The electromagnets 21 are controlled by an operator at the common supply and discharge point such that the appropriate stop is projected when a carrier approaches a selected station and trips the lever 18 on the tray 12 to deliver the box 17 at that station. When the operator at that station is ready to deal with the workpieces in the box 17 he pushes it down the surface 27 on to the surface 26 and, after operating on the workpieces, pushes the box on to a tray on the lower run for return to the common supply and discharge point. Switches 29 actuated by boxes on the receiving surface 25 at the various stations indicate to the operator at the supply point which stations are in need of work.
Patent GB-436172-A (GB)
Title: Improvements in electrical switches of the enclosed type
IPC: H01H9/16
Filed: 1934-05-26
Abstract: 436,172. Indicators for switches. PENDERGAST, F. R., SHEERMAN, S. E., and UNITED ELECTRICAL CO. (COOLEX), Ltd., Chester Street, Birmingham. May 26, 1934, No. 15722. [Class 38 (v)] In a switch of the enclosed type a mechanical indicator having suitable inscriptions to indicate the position of the switch is mounted upon the spindle carrying the coupling contacts and operating handle so as to move simultaneously therewith. As shown in Figs. 3 and 4 the indicator comprises a segment 14 mounted at the end of the shaft 6 carrying the movable contacts 5 and operating handle 10, the segment bearing on its periphery inscriptions to indicate the position of the switch. These inscriptions are visible through a glazed window 19 in the hinged cover of the switch when the latter is in the closed position. The cover is interlocked with the switch handle in the usual manner and a quick-action spring 13 for the movable contacts is provided. The indicator inscriptions may be of any suitable colour or colours and may be of luminous paint.