baber/WOPTO huggingface dataset:
Patent GB-144742-A (GB)
Title: Improvements in or relating to systems for driving hoists, rolling mills and electric locomotives
IPC: F16H61/46
Filed: 1918-12-19
Abstract: 144,742. Vickers, Ltd., Mackness, C. F., and Broughton, H. H. Dec. 19, 1918. Fluid-transmission apparatus -Hoists or winders are driven by constant-speed alternating- current syncmhronous electric motors through hydraulic speedgears, which may be of the Williams-Janney type. The position of the tilting-box or swashplate A<1>, Fig. 3, of the pump end of the gear may be varied by hand, but preferably by power-operated mechanism so constructed that the ratio of transmission cannot be changed too suddenly. In the arrangement shown, the tilting-box is positioned by a double ram D working in cylinders D<1>, D<2> connected to an oil-filled hydraulic accumulator K through a slide-valve G, operated by a bell-crank lever J connected by a link F<2> with a floating lever F, the end F<1> of the lever being connected to hand mechanism and the other end to the ram D. A valve K<3> controls the rate of movement of the ram.
Patent GB-320892-A (GB)
Title: Improvements in the photographic or photo-mechanical reproduction of surfaces
IPC: G03F1/88
Filed: 1928-07-23
Abstract: 320,892. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). July 23, 1928. Printing by R÷ntgen rays.-The resemblance of natural surfaces, for example the grain of wood and leather, woven fabrics, leaves of vegetables and the like, is reproduced by filling in the pores of the surface with a material impervious to X-rays, and printing a light-sensitive surface under X-ray illumination for photographic or photo-mechanical reproduction. Specification 308,375 is referred to.
Patent GB-1178568-A (GB)
Title: Self Locking Connectors for Cable Conduits and the like
IPC: F16B21/18
Filed: 1967-05-08
Abstract: 1,178,568. Pipe couplings. GRAY & HULEGUARD Inc. 8 May, 1967 [3 June, 1966], No. 21289/67. Heading F2G. [Also in Division H2] A self-locking coupling comprises first and second members 12, 14 adapted to be coupled together, and a collar 28 mounted on the member 12 for rotation therearound and being adapted to be screwed on to the member 14, a race 40 being formed on the member 12 and an annular spring 44 being disposed within the collar and against the race. The spring slides on the race when the collar is rotated in one direction to couple the members 12, 14 and wedges against the race when the collar is rotated in the opposite direction, to prevent accidental loosening of the coupling. As shown, the collar is also formed with a race 38, both races being serrated, and a collar-retaining member 50 is screwed on to the member 12. To disassemble the coupling a force is applied to the collar sufficiently to move the coils of the spring over centre and to a release position.
Patent GB-166245-A (GB)
Title: Piston rings
IPC: F16J9/14
Filed: 1919-08-29
Abstract: 166,245. Richter, J. Aug. 29, 1919. Piston packing. - Piston-rings are made of several parts welded together as at 8, the ends of the two parts to be welded being bevelled. The overlapping ends of the ring are made to form a tight joint as shown in Fig. 3. The ends of the ring need not overlap.
Patent GB-1492152-A (GB)
Title: Erasing a magnetic storage medium
IPC: G11B5/53
Filed: 1976-05-24
Abstract: 1492152 Erasing magnetic recordings INTERNATIONAL BUSINESS MACHINES CORP 24 May 1976 [6 June 1975] 21373/76 Heading G5R A magnetic record medium 12 moving relative to a magnetic head 10 is erased by applying to the head alternate pulses of opposite polarities, each pulse 28, 30 of one polarity being of higher amplitude and shorter duration to produce a larger magnetic flux bubble 18, 26 in the medium 12 and each pulse 32 of the opposite polarity being of lower amplitude and longer duration to produce a smaller magnetic flux bubble 20, 24 in the medium 12, at a frequency such that the initial position of a larger magnetic flux bubble contains the initial position of the preceding smaller magnetic flux bubble. The magnetic head may be rotating, connected to the pulse-generating circuit by a rotary transformer, Figs. 4 and 5 (not shown).
Patent GB-911081-A (GB)
Title: Improvements in or relating to dip-coating apparatus
IPC: B29C33/36
Filed: 1960-06-17
Abstract: 911,081. Moulding plastic gloves by dipping. PLASTOMERIC PRODUCTS CORPORATION. June 17, 1960 [June 18, 1959], No. 21379/60. Class 87(2). A plastic glove is moulded by passing a mould 14 along a track 10 through a pre-heating station 16, a heated bath of e.g. a vinyl dispersion, whilst rotating the mould, inverting and rotating the mould at 23, curing the plastic in an oven 22, forming a cuff by a roller 27, blowing jets of powder on to the rotating glove at 29, and finally cooling the glove at 35 by air from a fan 34 whilst rotating the glove. The mould, which may be of nickel plated copper is supported by ceramic heat insulating members 42 releasably connected to an outer ball-race 47, the inner race 51 of which is fixed to a sheet 53. The mould is rotated at the various stations by spring (72)- urged bars 66. The fabric-covered cuff forming roller 27, Fig. 5, is inclined with respect to the track 10.
Patent GB-154519-A (GB)
Title: Improvements in filing cabinets and the like
IPC: A47B88/14
Filed: 1920-07-17
Abstract: 154,519. Bradley, W. July 17, 1920. Drawer fittings.-Rollers C, C forming bearings for the drawer or extension slide of a filing cabinet are mounted on a spindle D, which serves also to secure the rail B of the drawer frame to the wall A of the cabinet. The spindle is in the form of a screwed bolt having a nut d recessed in the rail.
Patent GB-203000-A (GB)
Title: Improvements in gas turbines
IPC: F02C5/12
Filed: 1923-08-27
Abstract: 203,000. Karavodine, V. de. Aug. 26, 1922, [Convention date]. Generating combustion products under pressure.-Gas mixture is compressed and supplied to the combustion chambers V, V<1> of a gas turbine by way of pipes 1, 2 and spring-controlled valves U, and the outlet valves M, M' are kept closed for a short period after ignition to ensure the development of maximum pressure. The outlet valve M is opened by the pressure in the combustion chamber V, which is transmitted to the left-hand side of a piston T by way of a pipe O, slide-valve J, and passage 3. The rod S of the piston T actuates the rod of the outlet valve M through an idle-motion connection. The slide-valve J, which times the opening of the outlet valves, is actuated by a crank F driven through reduction gearing from the turbine shaft C, and serves also to close the outlet valves M, M<1> by means of arms K, K<1>. The moment of opening the outlet valves may be regulated by providing the valve J with oblique faces, as shown, and rotating it about its longitudinal axis so as to advance or retard the opening of the passages 3, 4. The combustion chambers and valve seatings are water-jacketed
Patent GB-335664-A (GB)
Title: Improvements in or relating to magnetic compasses
IPC: G01C17/00
Filed: 1929-07-13
Abstract: 335,664. Perkins, D. H., Camp, R. H., Hughes, A. J., and Hushes & Son, Ltd., H. July 13, 1929. Magnetic compasses.-An instrument for producing a magnified image of the whole or part of the scale of a magnetic compass comprises a casing containing a compass having a transparent or skeleton card, means for passing light through the card, and a magnifying reflecting prism, or equivalent such as a mirror and lens, at one end of the casing by which a virtual image of the card is produced, the lens or the magnifying part of the prism being between the eye of the observer and the reflected image to be magnified. The small compass 1 with transparent card 1<a> and transparent ends 1<c> is mounted within the casing 2 having at its lower end an enlargement 15 containing a magnifying prism 16 through the face 17 of which an enlarged virtual image of the card is observed. The prism can be adjusted rotatably by thumb-screws 20. The card is illuminated by light passing through the glazed opening 12 of the casing. A screen may be provided to block out those parts of the card which it is not desired to project. A source of artificial light comprising an electrical projector with a condenser may be provided to project light through the instrument, the projector being capable of being easily removed.
Patent GB-747683-A (GB)
Title: Improvements in and relating to lubricant distribution in forced or mechanical lubrication systems
IPC: F16N25/02
Filed: 1953-08-05
Abstract: 747,683. Lubricating. GULF OIL (GREAT BRITAIN), Ltd., BULLOCH, R., and TAYLOR, J. Aug. 3, 1954 [Aug. 5, 1953], No. 21634/53. Class 12 (3). In a lubricating system comprising a plurality of pistons adapted to act alternately as driving pistons under the pressure of the lubricant supply and as delivery pistons for supplying lubricant to desired points, and associated valve means actuated by the pistons for controlling the supply and delivery of lubricant to and from the pistons in turn, spring-loaded by-pass or vent valves are provided and arranged to be opened by the supply pressure when the pistons reach a dead centre position, to move a pair of pistons to a position for starting the cycle of operations. In the arrangement shown a lubricant distribution device comprises a block 1 provided with four lubricant delivery connections 18, 19, 27, 28 and formed with two parallel bores closed at the ends by plugs 2. Each bore is provided with four pistons connected together, the end pistons 3, 4 in one bore and 5, 6 in the other bore functioning as driving pistons under pressure of the lubricant or as delivery pistons for supplying lubricant to the delivery connections, and the innermost pistons 8, 9 in one bore and 11, 12 in the other bore, functioning as valve pistons to control the supply and delivery of lubricant to and from the end pistons. The upper bore has a spring-loaded relief valve 31 which can vent through a passage 32 to the left-hand end of this bore. At the other end there is a spring-loaded relief valve 33 which vents to atmosphere. The two bores are interconnected by conduits 36, 37, 38, 39 and by a passage 35 which is connected to a mechanical lubrication pump or other source of lubricant under pressure. The arrangement is that each end piston is actuated in turn by the supply lubricant and causes the piston at the opposite end to force out lubricant to the delivery connections past spring-loaded non- return valves. The relief valves 31, 33 are provided to prevent the pistons remaining in a dead centre position in which all the ports are closed. In this event pressure builds up and eventually operates relief valves 31 whereby pressure is transferred to the left of piston 3 causing it to move to the right, pressure being relieved at the right because valve 33 is opened to atmosphere.
Patent GB-910823-A (GB)
Title: An improved liquid metering apparatus
IPC: G01F3/28
Filed: 1958-07-07
Abstract: 910,823. Coin-freed liquid-vending apparatus; delivering measured quantities of liquid. STUART, F. Oct. 7, 1959 [July 7, 1958], No. 21644/58. Classes 27 and 106 (5). [Also in Group XXIX] A motorless self-operating device for controlling and measuring liquid flow comprises four measuring chambers A, B, C and D, each having an inlet 15 and an outlet for the liquid and being mounted on equally spaced arms 11 for rotation about a fixed axis 3, stop means 47 for arresting the movement of the chambers as each chamber moves in turn into a predetermined filling position, and means for releasing the stop means to permit a filled chamber to move into an emptying position. As shown in Fig. 2, liquid fuel is delivered from a pipe 7 via measuring chamber A, B, C or D to a tank 1. A male cone member 5 is formed on the end of spindle 3 (Fig. 3), and is provided with a bore 8 which is arranged to communicate with one of four radially disposed bores 9 in a female cone member 10 which is rotatably mounted on the male cone member 5. Four cranked tubular arms 11 have bores 12 connecting with the bores 9. A measuring chamber A, B, C or D is provided at the end of each arm 11. Each chamber is provided with a valve inlet 15 controlled by a needle valve 17 which is normally held by a counterweight 25 in a valve open position. On filling the chamber to the required level a float 23 rises and lifts the counterweights in such a manner that levers 26 will move the needle valve downwardly to cut-off the fuel supply. An aperture 29 serves as an overflow to the chamber, a vessel 30 being provided to catch the surplus fuel. To ensure that each chamber is filled to its correct level before it is emptied into the tank 1 a delay mechanism is provided which comprises a fixed disc cam 31 secured to the male cone 5 and a movable disc cam 33 rotated by a cord 40 actuated by a dash-pot 35 which is controlled by a needle valve 66. On each of the arms 11 is fixed a spring-loaded plunger 43 which enters notches in the cams 31, 33 at the end of the time lag. This movement releases a projection 45 on the plunger 43 from a stop member 47. The weight of the filled chamber A (Fig. 1), will cause the chamber to move into the position of the chamber B where it will be emptied. The overflow vessel 30 is pivotally mounted on the measuring chamber and is provided with a guide member 58 cooperating with a cam track 52 which tilts the vessel to cause any fuel therein to return to the measuring chamber prior to the next filling operation. A counting mechanism 60 records the number of measuring chambers filled and thus the amount of fuel used. The device can be operated in conjunction with a coin-freed apparatus. The coin-freed mechanism is arranged to co-operate with a ball valve 50 which, when the liquid in the tank 1 reaches a predetermined level will cause a plunger 53 to co-operate with a notch 54 and so prevent further operation of the device.
Patent GB-236766-A (GB)
Title: Improvements in and relating to laminated springs
IPC: F16F1/26
Filed: 1924-09-15
Abstract: 236,766. Woodhead, G. A., and Sanders, T. H. Sept. 15, 1924. Laminated springs. - The master plate is divided into two portions equally or unequally, the division preferably coinciding with the main point of attachment. The construction avoids the necessity for drilling or deforming the plates at their point of maximum bending movement. In the construction shown in Fig. 1, the two parts of the master plate a are formed at their adjacent ends with eyes which are connected by bolts d to the U-shaped plate b. The holes for the bolts d are so positioned that the plates are clamped firmly together. The spring may be attached to an axle pad or to a vehicle by a studded plate e clamped between the end of the U-plate b and the shortest leaf, or by bars f, Fig. 4, passed through holes drilled in the thickened base of the hoop and having their free screwed ends turned downwardly. In the case of underslung springs, the attachment studs may be formed solid with the sides of the U-plate. Or eye bolts may be carried by the bolts d, the eyes in the ends of the master plate being cut away to accommodate the eyes. Or the sides of the U-plate may be extended upwards and drilled to carry a transverse bolt. Either or both end shackles may be dispensed with, the ends of the spring being fixed while allowance is made for endwise displacements due to the deflection of the spring by slotting the holes for the bolts d as shown in Fig. 4. The leaves g next to the master plate may be positioned relatively thereto either with or without sliding movement by wrapping round the ends, as shown in Fig. 1. The winding leaves may be ribbed and recessed near their ends.
Patent GB-666804-A (GB)
Title: Improvements relating to convertible bed-settees and the like
IPC: A47C17/207
Filed: 1949-08-22
Abstract: 666,804. Bed-settees. GREAVES & THOMAS, Ltd., and THOMAS, A. J. May 11, 1950. Aug. 22, 1949. No. 21782/49. Class 52 (ii). A bed settee comprises a frame constructed with end boards 3 and back board 6 to which frame are secured the arm rests 4. Hinged together and to the end boards 3, preferably by the hinge construction 5 described in Specification 626,410, are the seat 1 and back 2 which are adapted to be placed in alignment without the back 2 projecting substantially beyond the frame. On the interior of the end boards 3 are mounted angle iron guides 7 upon which rollers 16 on the rear of a carriage 11 are adapted to roll. The carriage 11 is formed as a frame 12 having forward castors 15 and front board 14 and it is adapted to be extended from below the seat 1 so that a mattress frame 22 carried by two pairs of parallel links 21 may be elevated into position in alignment with the aligned seat and back. Gravity stops 20 are adapted to lock the carriage 11 in extended position when the mattress frame 22 is elevated. These stops 20 are released by lowering the mattress frame.
Patent GB-1344003-A (GB)
Title: Cartridges for grease guns and the like
IPC: F16N3/12
Filed: 1971-04-19
Abstract: 1344003 Grease cartridges CONSOLIDATED GLASS WORKS Ltd 19 April 1971 [13 Feb 1970 10 April 1970] 21809/71 Heading B8 [Also in Division F1] A cartridge for a grease gun comprises a plastics sleeve having a flange 8 or a series of peripheral lugs which can be gripped between the head 9 and the casing 6 of a grease gun, a circumferential ridge 14 or circumferentially disposed lugs which can be engaged by a piston 15 to assist removal of a spent cartridge and one or more saw-tooth ribs 11 which can engage the casing 6 to prevent movement of the cartridge end 10. To insert a full cartridge in a gun, plastics end caps (5, Fig. 1) having ducts (13) accommodating the flange 8 and ribs 11 are removed. The cap ducts (13) may be provided with annular ribs (12) to improve cap fastening. The gum casing 6 may comprise a sleeve or cage.
Patent GB-882179-A (GB)
Title: Electric condenser
IPC: H01B1/00
Filed: 1958-07-08
Abstract: 882,179. Capacitors. ALLMANNA SVENSKA ELEKTRISKA A.B. July 8, 1958 [July 26, 1957], No. 21817/58. Class 37. A capacitor having a paper dielectric with a conducting layer of zinc deposited on the paper is characterized in that the conducting layer includes a small amount of aluminium which is present at least on the free surface of the conducting layer. It is stated that by this means the formation of an oxide layer on the zinc, and fringes projecting from the oxide layer (which prevents self-sealing after breakdown of the dielectric) is avoided. The zinc and alumunium may be in the form of an alloy or the aluminium may be deposited as a separate layer on the zinc.
Patent GB-977918-A (GB)
Title: Improvements in or relating to woven wire slings
Inventor: DAVIES COLIN GEORGE
IPC: B66C1/18
Filed: 1962-06-07
Abstract: 977,918. Woven wire springs. F.S.B. (WIRE INDUSTRIES) Ltd. June 6, 1963 [June 7, 1962], No. 21981/62. Heading B8H. The faces of slots 8 in the handles 3, 4 of a woven wire sling are inclined in accordance with the pitch of spirals 9. The spirals 9 are attached to the handles by rods 11. The handle 3 may be passed through a slot 7 in the handle 4.
Patent GB-531664-A (GB)
Title: Improvements in or relating to electric plug and socket devices
IPC: H01R13/70
Filed: 1939-07-28
Abstract: 531,664. Two-part couplings combined with switches. FRIEMANN & WOLF GES. July 28, 1939, No. 22001. Convention date, July 28, 1938. [Class 38 (i)] The socket member 2 of a coupling includes a switch 4 having an operating spindle 9 with a head 10 shaped to fit into a recess in the end 22, Fig. 2, of a spindle 21 carried by the plug member and turned by a lever 24. The part 22 carries a ward 23 that passes through a groove 16 so that the coupling can be engaged only when the lever 24 is in one position and when the lever is moved to close the switch the coupling cannot then be disengaged. The housings 3, 17 fit together to form a gas-tight enclosure and one may be doubled so that the other fits into the annular groove so formed. An eccentric cable inlet 28 and a bushing 29 for the spindle 21 may both be gas tight.
Patent GB-1068702-A (GB)
Title: Stabilizer for polyolefins
IPC: C08K5/372
Filed: 1965-05-25
Abstract: A composition comprises a mixture of dilauryl, distearyl and laurylstearyl thiodipropionates, in which the lauryl moeity constitutes 10-90%, preferably 50 mole per cent, of the total ester moeities.  The composition is capable of stabilizing polyolefines built up of 2-4C monomeric units, 0.1-1.0 wt. per cent of stabilizer being suitably used, based on the wt. of the polyolefine.  The composition is made by reaction of an appropriate mixture of lauryl and stearyl alcohols with thiodipropionic acid or a precursor thereof, e.g. the dinitrile, dihalide or an ester.  A specified starting material is 3,31-thiodipropionitrile.ALSO:A polyolefin composition built up of 2-4 C monomeric units, e.g. polypropylene, comprises 0.1-1.0% weight, based on the weight of the polyolefin, of a mixture of dilauryl, distearyl and laurylstearyl thiodipropionates wherein the lauryl moeity constitutes from 10-90% moles of the total ester moeities present in said mixture.  See Example 2.
Patent GB-223364-A (GB)
Title: Improvements in or relating to valves for pneumatic tyres and the like
IPC: F16K15/20
Filed: 1923-09-04
Abstract: 223,364. Howell, E. C., Howell, B. M., Howell, E. C. L., and Howell, D. G., (trading as Howell & Co.). Sept. 4, 1923. Dust caps for tyre valves.-The cap C of a tyre valve is rotatably mounted in a strap B pivoted to a band A slidably but non-rotatably mounted on the valve casing. The band A may comprise a short length of tube or mav be of bent metal or wire or may be stamped with a non-circular hole to fit the valve casing. The strap may be of wire or of stamped metal of U or L section.
Patent GB-336668-A (GB)
Title: Improvements in the manufacture of aliphatic anhydrides
IPC: C07C51/56
Filed: 1929-07-19
Abstract: 336,668. Dreyfus, R. July 19, 1929. Acetic and other aliphatic anhydrides are made by heating the vapour of the acid in contact with a catalyst supported or mixed with asbestos. The catalysts mentioned in Specifications 257,968, 280,972, 312,587, 314,555 and 317,907 may be so used, but other catalysts not so supported may be employed in addition, in solid, liquid, or gaseous state, including the catalysts mentioned in the Specifications referred to above and in Specifications 318,662, 318,663, and 318,664. The reaction may be effected in a copper or other tube and at ordinary, increased, or reduced pressure, for instance at 3-5 atmospheres. The acid vapour may be diluted with an indifferent gas. The anhydride may be separated from the reaction mixture by the processes described in Specifications 256,663, 279,916, 289,972, 298,667, 303,772, and 310,863. In an example, acetic acid vapour is passed rapidly through a copper tube at 400-500‹ C. containing calcium tungstate upon asbestos and the anhydride is separated by fractional condensation.