baber/WOPTO huggingface dataset:
Patent GB-143964-A (GB)
Title: Improvements in and relating to calculating devices of the slide rule type
IPC: G06G1/10
Filed: 1919-03-01
Abstract: 143,964. Winzar, O. G. March 1, 1919. Slide-rules.-The sliding member, fitted with a transparent sheet having index marks, is mounted in a frame capable of sliding in a transverse direction, and is worked in conjunction with a loose pointer placed on the sheet. In the form shown, the base 2, upon which the scales 1 are marked in a series of short lengths drawn slightly obliquely, carries guides 3 in which there slides transversely a frame 4 also having guides 5 in which slides longitudinally a frame 6. In this frame is a transparent sheet having index marks 8, 9, 10, 11, and upon it lies a loose pointing-device 12, Fig. 2, having its base 14 of rubber or other frictional material and furnished with a pointer 15. One of the index marks having been shifted above one number, the pointer 12 is placed so as to coincide with one of the unity marks on the scale, and the frames 4, 6 are shifted by hand until the pointer coincides with the other factor on the scale, the product being read by whichever of the index marks 8 &c. is left on the scale 1. In a modification, a supplementary scale is fixed below the main scale, and the pointer is in the form of a block provided with an indicating arm.
Patent GB-841738-A (GB)
Title: New process for the preparation of stabilized nitrocellulose
IPC: C08B5/02
Filed: 1958-02-18
Abstract: In the production of nitrocellulose the nitration is carried out with nitric acid of a concentration not less than 97% by weight based on the total amount of nitric acid and water present in the nitration liquid and exluding any salts that may be present, in the absence of other acids and of acid anhydrides, and the nitrated product, after removing nitric acid from it, by washing with water and boiling with a dilute aqueous alkaline solution, is stabilized by boiling it for a short time with a liquid having a lower surface tension than pure water and miscible with water and nitric acid in all proportions. The liquid is preferably water containing 0,1 to 1% of a water-soluble surface-active agent, and in this case the last two stages of the process may be combined in the single operation of boiling the nitrocellulose with a dilute aqueous alkaline solution containing the surface-active agent.  The alkali used is preferably sodium carbonate.  The nitric acid used preferably has dissolved in it about 1 to 2% by weight of an anhydrous salt capable of dehydrating the reaction mixture.  Examples of these are nitrates of ammonium, sodium, magnesium and calcium.  The surface active agent may be a reaction product of ethylene oxide and a long-chain fatty acid.  In an example, cellulose is nitrated for 45 minutes at 20 to 25 DEG C. with 99% nitric acid containing 1,5% of an anhydrous alkali metal or alkaline earth nitrate, the nitrocellulose formed removed from the residual acid, washed with water, boiled for one hour with sodium carbonate solution of pH 8, removed from this solution, and boiled for 2 hours with 100 times its weight of water containing 0,1% of a surfaceactive agent. The invention produces an increased yield of nitro-cellulose of improved stability.  Specification 470,292 is referred to.
Patent GB-425194-A (GB)
Title: Improvements in or relating to lasts for the manufacture of boots, shoes and the like
IPC: A43D3/02
Filed: 1934-02-17
Abstract: 425,194. Lasts. NAAMLOOZE VENNOOTSCHAP EERSTE NEDERLANDSCHE LEESTEN-EN STANZMESSENFABRIEK, 26, Postbus, Tilburg, Holland. Feb. 17, 1934, No. 5314. Convention date, July 5,1933. [Class 17 (i)] A last divided into toe and heel parts in a direction oblique to the length of the last has the parts slidably secured together by two plates c, d respectively embedded in and secured to the two parts, the plates overlapping and each provided with a lateral flange k and an adjacent parallel groove l, the flange of each plate fitting into the groove of the other. A pin h and slot limit the movement of the parts. A retaining pin f slides in a hole in the heel part and co-operates with one of two holes in the forepart to maintain the last in either the extended or contracted condition. Each of the plates has a hook-like extension g for engagement with a suitable lasting or unlasting tool.
Patent GB-124871-A (GB)
Title: Improvements relating to Apparatus for the Collection of Surface Refuse from Road Surfaces.
Inventor: KERN BERNARD
IPC: E01H1/08
Filed: 1918-03-26
Abstract: 124,871. Kern, B. March 26, 1918. Pneumatic collectors; sweeping-machines.-Relates to vacuum cleaning-apparatus for roads, and consists in conveying the refuse from a collecting- hood to an expansion chamber by a column of air of varying form but uniform cross-sectional area throughout. In the apparatus shown in Fig. 1, the refuse, loosened by a rotary brush C, is sucked by a fan G through a collecting-hood K and upright pipe J and delivered through a conduit M into an expansion chamber F. As shown in plan in Fig. 2, the air passages through the members K, J, M are of varying form, but the sectional area is maintained constant throughout On reaching the chamber F, the heavier particles of refuse fall on to the floor of the chamber, the lighter particles being collected by a rotary slotted drum E having fabric pockets e held taut by spring-pressed rods e<11>. The dust settling on the fabric is shaken into a compartment 0 by a fixed cam x acting in turn on the rods e", the air passing through the fabric escaping to the atmosphere through gauzes N. The dust is removed from the compartment 0 by a screw conveyer X<4> and elevator X<5> leading to a shoot X<6>. The fan, brush, collector, and conveyers are driven from a motor X<3> separate from the propelling-motor X.
Patent GB-874539-A (GB)
Title: Improvements relating to metal mesh for use as flooring or grating or as reinforcement for mortar and other materials
IPC: E04C2/42
Filed: 1957-02-18
Abstract: 874,539. Metallic fabrics. CAUSEWAY REINFORCEMENT Ltd., and MARSDEN, A. Feb. 14, 1958 [Feb. 18, 1957], No. 5451/57. Class 45. [Also in Group X] Metal mesh for flooring, armouring, grating or reinforcement in mortar, bitumen and the like comprises straight bars 1 formed with holes 2 which receive overlapping ends 3 of corrugated strips 4 having tongues 6 which engage the bars 1 after insertion and resist removal. The ends 3 are inserted, until limited by shoulders 5, from opposite sides of the bar 1, the tongues 6 springing outwards on engagement. In a modification, Fig. 5, each corrugated strip 9 has projecting tongues 10 and slots 12 formed behind the tongues, each tongue 10 engaging in the slot 12 of the overlapping end of an adjacent strip.
Patent GB-300163-A (GB)
Title: Improvements in or relating to endless tracks for vehicles
IPC: B62D55/28
Filed: 1928-02-21
Abstract: 300,163. Kegresse, A. Nov. 7, 1927, [Convention date]. Addition to 285,047. Endless-track vehicles.-An endless track comprises a series of links 1 carrying the central removable tread blocks described in the parent Specification, these blocks being arranged to make contact with each other along a vertical line passing approximately through the pivoted axis of each link. The blocks may be resilient, and in that case they may be made slightly longer than the distance between the pivots of the links so that they are compressed when the track straightens out on the ground. The blocks may be staggered in plan as shown in Fig. 3, they may be hollowed as at 7, and they may be made in halves 9, 9 secured to the link by a bolt 8.
Patent GB-796235-A (GB)
Title: Improvements in screen deck structures for vibratory screening apparatus
IPC: B07B1/49
Filed: 1956-02-23
Abstract: 796,235. Sifting apparatus. TYLER CO., W. S. Feb. 23, 1956 [March 7, 1955], No. 5584/56. Class 117 A vibratory screen deck consists of several sections of parallel rods 23, and each section extends between transverse end supports 12, 15 on a framework 10, 11 and passes over intermediate transverse supports 13, 14 provided with rubber support blocks 16, 17. The latter may be grooved to receive the rods, the ends of which are arranged in rubber mountings 30. To secure a section iin position one end is placed between the ledge 21 of an end support 12 and a plate 22, and the opposite end is forced downwardly below a similar plate 22 on the opposite end support, and a rubber wedge block 27 with a metallic part 29 is placed between the said opposite end of the section and the adjacent plate 22. A tool for pressing the section downwardly comprises a handle 33 to which is pivoted at 35 a hook 34 which is placed between two adjacent rods of the section, and engages an orifice 41 in a plate 40 and the side of a bracket 18. When the handle is depressed a bar 38 contacts the section across its full width and forces its end down. In the modification of Fig. 5 the end 51 of the screen section rests on a rubber support 53 on an angle plate 55. Instead of rods, the sections may comprise perforated plate or woven wire, and the arcuate shape of the section may run transversely of the screen deck.
Patent GB-525375-A (GB)
Title: Improvements in or relating to hardened lead alloys particularly adapted for use in bearings
IPC: F16C33/12
Filed: 1939-02-20
Abstract: 525.375. Alloys. NATIONAL LEAD CO. Feb. 20, 1939, Nos. 5592 and 5593. Convention dates, Aug. 10, 1938, and Aug. 15, 1938. [Class 82 (i)] A lead alloy, particularly for bearings, contains 0.11 - 2 per cent. of calcium, 0.5 - 10 per cent. of tin, and 0.5 - 5 per cent. of cadmium, with or without 0.1 - per cent. of mercury, 0.02 - 0.15 per cent. of aluminium, 0.5 - 2 per cent. of silver, 0.02 - 0.1 per cent. of barium, 0.02 - 0.5 per cent. of strontium, 0.05 - 1 per cent. of copper, 0.05 - 0.5 per cent. of manganese, and 0.01 - 0.15 per cent. of magnesium. The alloy may be made by adding to molten lead under a flux an aluminium-tin alloy, calcium or a calcium-lead alloy, cadmium or a cadmium-tin alloy, the other metals if used being added as such or as tin alloys and the tin and mercury being added last when the temperature is just above the melting point of lead. Bearings made of the alloy may be 1/32 - 1/16 inch thick, and may be coated with tin.
Patent GB-1068643-A (GB)
Title: Tire construction
IPC: B60C11/11
Filed: 1965-02-09
Abstract: 1,068,643. Wheel tyres. LOUIS FISHMAN & CO. Inc. Feb. 9, 1965 [March 16, 1964], No. 5599/65. Heading B7C. A solid or pneumatic tyre tread includes transverse lugs 16 separated by recesses 22, 26 and each having a straight portion 18 and a tapered end portion 20. Recesses 26 between the overlapping tapered portions 20 are narrower and shallower than recesses 22 between the portions 18.
Patent GB-365374-A (GB)
Title: Improvements in method of and means for handling and protecting sheet materials
Filed: 1931-02-23
Abstract: 365,374. Preserving rubber. MISHAWAKA RUBBER & WOOLEN MFG. CO., 312, West Hill Street, Mishawaka, Indiana, U.S.A. Feb. 23, 1931, No. 5603. Convention date, March 17, 1930. [Class 70.] Unvulcanized strips of sheet rubber are manipulated by winding them with a strip of supporting material in such a manner that each convolution of the rubber is held out of contact with the support on its outer side. The support comprises a belt 10, Fig. 1, which may be of cardboard faced with fabric 11, having strips 12 at each edge of such depth as to form a channel 13 deep enough to accommodate the rubber strip 71. The belt is preferably used in conjunction with the apparatus shown in Fig. 4 in which a frame 73 supports drums 15, 16, on the upper, 15, of which the belt 10 is wound at the commencement of the operation. The apparatus is positioned to receive the rubber sheet 71 from the calender on to the lower drum 16 in the channel formed by winding the belt 10 from the upper drum. The apparatus is transferred to the place of use and the rubber is removed as required, for example by means of a continuously-driven roll 35 which contacts with the drum 15 when depressed by pulling a cord 42. In a modification, the drums are operated manually by pawl and ratchet gear.
Patent GB-870878-A (GB)
Title: Improvements relating to ships' windows
Inventor: JOHNSON JAMES
IPC: B63B19/00
Filed: 1959-02-18
Abstract: 870,878. Ship's windows. SWINBURNE ,& SONS Ltd., M. W. Feb. 18, 1960 [Feb. 18, 1959], No. 5675/59. Class 113. A ship's window comprises a large fired light 2 and a small pivoted light 3 which has a spring loaded bolt 14, 18, 19 at one side, the tip 27 of which is engageable with one of the recesses 28 of the D-shaped lug 24. The bolt may be withdrawn from the recess 28 by lateral rotation of the knob 20 in the slot 22. The small window may be secured in the closed position by the pivoted screw 11 and wing nut 12.
Patent GB-346517-A (GB)
Title: Improvements relating to pre-combustion chambers of diesel engines
IPC: F02B23/04
Filed: 1930-02-20
Abstract: 346,517. Oil engines. MOTORENFABRIK DEUTZ AKT.-GES., Deutz, Cologne, Germany. Feb. 20, 1930, No. 5701. Convention date, March 9, 1929. [Class 7 (iii).] A laterally placed precombustion chamber a, for a small Diesel engine, has one large outlet directed towards the centre of the main combustion space and two smaller side openings. Specification 308,316, [Class 7 (iii), Internal-combustion engines, Carburetting-apparatus &c. for], is referred to.
Patent GB-274418-A (GB)
Title: Improvement in pneumatic coal picks
IPC: E21C37/24
Filed: 1927-03-01
Abstract: 274,418. Ingersoll-Rand Co., (Assignees of Slater, F. M.). July 15, 1926, [Convention date]. Percussive hand tools. - In a pneumatically-operated coal pick the hollow hammer-piston V slides on an inlet tube L held by a flange P between the handle and the barrel. The pressure fluid passes to the space behind the piston by way of a flat Z on the tube and to the space in front by ports X and grooves c, d in the cylinder wall. The exhaust ports e, f lead to a space h inside a sleeve clamped at its end under the handle and provided with escape ports j.
Patent GB-126418-A (GB)
Title: Button Sewing Machine.
Inventor: FAIRWEATHER WALLACE
IPC: D05B3/16
Filed: 1918-04-04
Abstract: 126,418. Fairweather, W., (Singer Manufacturing Co.). April 4, 1918. Button - attaching machines. - In button-attaching sewing-machines of the kind described in Specification 114,389, the button - holding clamp consists of two pivoted arms 24 articulated at 27, drawn together by a spring 28 and provided with depending parts 25 adapted to close on the shank of the button as shown. The parts 25 are dished to conform to the shape of the underside of the button, and are preferably notched when they close on the button. They are cut away slightly below the normal operative position of the button shank. The clamping- arms are supported on a plate 17 laterally adjustable on a block 15 secured to the presser-bar 10. The arms are separated by a wedge 31 on the lower end of a pin 32 which slides in the block 15 and is actuated to release the button by contact with an abutment 34 secured to a fixed part of the machine when the presser-bar is raised. Specification 8802/92 also is referred to.
Patent GB-1530683-A (GB)
Title: Device for laterally displacing a railroad track
IPC: E01B33/02
Filed: 1976-02-13
Abstract: 1530683 Aligning railway track CANRON INC 13 Feb 1976 [28 March 1975] 5784/76 Heading E1G [Also in Division G3] The lateral alignment of railway track is corrected by applying a force laterally of the track to move it laterally from an incorrect position in the direction of its correct position by means of hydraulic jack 10 mounted on the frame 11 of a wheel-mounted track correcting machine. The system pressure increases until the pressure sensitive switch 30 operates the solenoid valve 31 which exhausts the jack 10. The drop in pressure then causes the pressure switch to close which reinstates the pressure to the jack and the cycle is repeated. The arrival of the track at its correct position is sensed by feeler 22 mounted on a reference frame 24 and set at a datum position by means of motor 32. The movement of the rail against the feeler causes the valve 20 operable by the feeler and located between the hydraulic pump 12 and the jack to close and the pressure in the system to increase until the pressure switch 30 operates the solenoid valve 31 to exhaust the jack. The return of the feeler to its datum position allows the valve 20 to open and the cycle is repeated. The operation of the machine is therefore a vibratory cycling of force application which relieves the stresses in the ballast which would tend to return the rail towards its original position. The vibratory cycling at the correct position is controlled by adjusting the counting circuit 27 operated by microswitch 28 in contact with the upper arm of the feeler 22 to the required number of cycles.
Patent GB-575658-A (GB)
Title: Improvements in mounting devices for the work or tool holding components of machine tools
IPC: B23Q3/12
Filed: 1944-03-29
Abstract: 575,658. Mounting chucks, milling- cutters &c. JAMESON, J. L. March 29, 1944, No. 5825. [Class 83 (iii)] Work and tool holders such as chucks and milling-cutters are mounted by flanges locked to a spindle flange by means of a divided ring of channel section. To permit of rapid assembly, at least one pair of inter-engaging flanges are gapped to form a series of teeth 5. The ring 1 is in two parts connected by bolts and the flanges are tapered to draw the backplate 8 of the chuck into contact with the spindle flange 7 on tightening the bolts. Drive may be transmitted by the flanges or through a key 12 secured in a keyway 11 in the spindle flange and engaging a keyway 11a in the back plate. To prevent rattle when the chuck &c. is removed, a spring plunger 13 in the spindle flange engages a notch 15 in the ring 1. The bolts may be'replaced by a quick-acting cam.
Patent GB-491223-A (GB)
Title: Improvements in or relating to alloys and to light reflectors made therefrom
IPC: C22C9/01
Filed: 1937-02-26
Abstract: A copper-aluminium alloy containing 7,5-10,5 per cent of aluminium, particularly 9,95 per cent, is made by heating pure copper, which may be refined or electrolytic copper, to about 1160 DEG  C., cooling it to about 950" C., or, according to the Provisional Specification, 850 DEG  C., and adding aluminium which has been heated to 150 DEG  C. and may be in small pieces.  The alloy is particularly applicable for making reflectors for reflecting orange-coloured or similar light rays, and such reflectors may be used in motor car lamps and in photography, kinematography, surgery, signalling, landing grounds, street and other lighting, advertising, and for other purposes.
Patent GB-399498-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J13/20
Filed: 1932-02-27
Abstract: 399,498. Metallic-vapour apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Sabbah, C. A. ; 1, Washington Avenue, Schenectady, New York, U.S.A.) Feb. 27, 1932, No. 5910. Convention date, Feb. 28, 1931. Drawings to Specification. [Class 39 (i).] An anode shield or grid consists of insulating- material provided with a thin conducting layer in intimate contact with its surface.
Patent GB-563851-A (GB)
Title: Improvements in or relating to gun turrets
IPC: F41A27/20
Filed: 1941-05-08
Abstract: 563,851. Variable-speed friction gearing; Bowden mechanism. SCOTT, P. B., ROSE, A. G., CURTIS, S., and ROSE BROS. (GAINSBOROUGH), Ltd. May 8, 1941, No. 5967. [Classes 80 (ii) and 80 (iii)] [Also in Groups XXI and XXXI] A mechanical relay for driving a gun turret turntable 14, Fig. 1, includes a variable-speed friction gear comprising a disc 71 driven by an electric motor 52 and variably driving a roller 63 through a pair of superposed balls 64 in a cage traversed radially across the face of the disc. This adjustment is effected by rotating a handle 23, Fig. 5, which through plungers 106, 104 and ball transmissions 103 moves a rack 89 to move through sector gear 92 a cam 84 controlling a lever 77 connected to the ball device.
Patent GB-578133-A (GB)
Title: Improvements relating to starting arrangements for electric discharge lamps
IPC: H05B41/12
Filed: 1944-04-01
Abstract: 578,133. Control of space discharge apparatus. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., ALDINGTON, J. N., and STEPHENS, G. O. April 1, 1944, No. 6096. [Class 38 (iv)] A switch whereby the heating circuit for the filaments in a discharge tube may be periodically made and broken until the discharge starts, incorporates means co-acting directly with one at least of its contact members after several such operations to prevent the occurrence of others irrespective of conditions in the circuit of the lamp. Fig. 1 shows a magnetic member 14 carried by one contact member 4 which is flexed under the influence of a heater 5 to separate the members 14, 7 to start the lamp 4 and additionally heated by an element 6 each time the members separate. After several operations the magnetic element 14 becomes held by the magnet 8 until detached by manual means 10, or, according to the Provisional Specification, by opposing magnetic means. In Fig. 2 the element 6 heats a bimetallic element 17 whereby a sheet 18 of insulating material is inserted between the contact members 15, 16 which are adapted to grip the sheet 18 between them on cooling. Alternatively a resilient latch member 19 may engage a notch 20 in the sheet 18. The invention is applicable to starters of the thermal glow type.
Patent GB-936125-A (GB)
Title: Improvements in or relating to spacers for bundled overhead line conductors
Inventor: COX JOHN EDWARD
IPC: H01H1/24
Filed: 1961-02-20
Abstract: 936,125. Spacing conductors. BRITISH INSULATED CALLENDER'S CABLES Ltd. Feb. 19, 1962 [Feb. 20, 1961; Oct. 12, 1961], Nos. 6147/61 and 36671/61. Class 36. A spacer for bundled conductors of overhead lines comprises at least two clamps attached to two conductors of the bundle and spaced apart by a tubular strut and tied together by a tie member within the tubular strut. In the embodiments of Figs. 1, 2, 5, 6, 7 and 8 (Figs. 2, 5, 6, 7 and 8 not shown), the strut is in the form of a steel spring, the part between the clamps having abutting turns. As shown, Fig. 1, the ends of the strut are each held in a socket at one end of a cast metal clamp 8, the other end of which clamps a horizontal cable 5 or 6. A corrugated metal strip tie member 4 of steel with its plane perpendicular to the common plane of cables 5 and 6 has its ends each inserted in a slot formed in the closed wall of the socket. Joints are made between the spring strut and the tie member and the clamps by compressing the clamp at those ends by a tool. Such an arrangement allows extension of the spring strut and longitudinal movements of the cables limited by the tie but no relative vertical movement of the cables. In the arrangements of Figs. 5, 6, 7 and 8 (not shown), the tie member is a strip without the corrugations and its ends, instead of being jointed to the clamps, are resiliently held inside the clamp body allowing some extension of the spring strut. In a further embodiment, Fig. 3, showing a horizontal cross-section, the die is, as before, a plane steel strip but the strut is a rigid aluminium tube enclosing the tie, the tie ends being jointed to the clamps and the strut ends being pivotally fixed to the clamp by means of a Neophene sleeve 29 fitted at the ends of the strut and engaged to the clamp end by an integral flange 30. Also fitted to the strut ends are nylon plugs 22 with concave surfaces 23 which butt against convex end surfaces of the clamps, there being opposing V-shaped slots in the plugs 22 and the clamp end in the passage of the tie. Such an arrangement allows only relative longitudinal and angular movements of the spaced cables. For a bundle containing more than two conductors, a required number of spacers depending on the arrangement of the conductors are provided, the clamps being of such shape as to allow a suitable number of ties and struts to be attached to them.