baber/WOPTO huggingface dataset:
Patent GB-777411-A (GB)
Title: Improvements in the production of polyurethane foams
IPC: B29C44/14
Filed: 1955-07-27
Abstract: Articles are shaped from plastic foams by a process in which the foaming is carried out in a mould which is lined with a thin foil of foamed plastic material, e.g. polyurethane.  A smooth impervious surface on the articles is thus avoided.  The foil can be cut from a block of polyurethane which preferably has a bulk density of less than 50 kilogrammes per cubic metre and a pore size of 1 to 2 millimetres.  A suitable thickness for the foil is 1 to 2 millimetres.  An advantageous foaming process comprises bringing together a polyester, a polyisocyanate and an activator mixture in an enclosed mixer, at least the activator mixture being injected under pressure, and discharging the liquid mixture into the mould, wherein a solid polyurethane foam is formed due to a plurality of chemical reactions.  The mixture should preferably blow in a thinly liquid form which penetrates into the pores of the mould lining.  To avoid blow holes in the moulded material the walls of the mould may be perforated to facilitate the release of the gas generated in the foaming process.  Numerical examples are given of foamable polyester-polyisocyanate or polyvinyl chloride mixtures.  A foamable mixture yielding an elastic foam may produce cushions, mattresses, chair paddings, bath mats &c.  A mixture yielding a rigid foam may produce lifebelts, artificial limbs, display figures &c.  For making, e.g. automobile seat cushions, the bottom of the mould may be lined with paper to prevent the liquid passing through the perforated mould wall while the sides and cover of the mould are lined with the elastic foamed foils. Specifications 769,680 [Group IV(a)] and 769,682 [Group III] are referred to.ALSO:Artificial limbs are shaped from plastic foam by a moulding process (see Group V) which leaves the surface of the moulded article porous as well as the interior, a foamable mixture being used which, when set, becomes rigid, e.g. a polyurethane mixture. This is achieved by lining the mould with a layer of previously formed foamed polyurethane.  Specifications 769,680 [Group IV(a)] and 769,682 [Group III] are referred to.
Patent GB-363697-A (GB)
Title: Improvements in electromagnetic devices for use in weak magnetic fields
IPC: H01F1/16
Filed: 1930-07-17
Abstract: 363,697. Altering physical or molecular structure by mechanical treatment. ALLGEMEINE ELEKTRICIT€TS-GES., 2, Friedrich Karl-Ufer, Berlin. July 17, 1930, No. 21710. Convention date, Aug. 28, 1929. [Class 83 (iv).] Core material for electromagnetic devices such as Pupin coils and Krarup conductors comprises ferromagnetic sheet, wire or ribbon which is subjected to alternate thermal and mechanical treatments and to a final cold stretching to give it a permeability of y=25 or over and an " instability " of less than 5 per cent after any desired continuous current loading. The raw material may consist of an alloy of nickel and iron in equal proportions which is annealed and stretched alternately, the final operation consisting in stretching in the cold until the cross section is reduced about 60-70 per cent. Other alloys of ferromagnetic material may be treated, and they may have additions of silicon, manganese or copper. The material may be powdered and then built up to form core structures.
Patent GB-666802-A (GB)
Title: Improvements in or relating to hand pruning shears or secateurs and the like
IPC: A01G3/02
Filed: 1949-08-22
Abstract: 666,802. Shears. WILKINSON SWORD CO., Ltd., and RANDOLPH, H. B. April 14, 1950. [Aug. 22, 1949] No. 21712/49. Class 30. [Also in Group XXV] In a cutting implement, comprising cutting blades formed of crossed levers mounted on a pivot pin and urged apart by a concealed spring encircling the pivot pin, the crossed lever members comprise drop forgings each having an elongated recess apertured to receive the pivot pin and forming a chamber to receive the spring, the ends of which bear against oppositely disposed inner walls of the recesses to open the blades. As shown the blades 10, 11 of pruning shears are formed with shanks 10<SP>1</SP>, 11<SP>1</SP> peened or spot welded to pressed steel handles 12, 13 and are mounted on a screwthreaded pivot pin 14 passing through apertures, the wall of one of which is screw-threaded at 17<SP>1</SP>, in elongated recesses 16. A ball bearing 21 between the ends 19 of a spring 18 encircling the pivot pin and enclosed in the chamber formed by the recesses 16 also acts as a stop limiting the opening of the blades. The shears are provided with a fastening device comprising a notch 22 on the shank 10<SP>1</SP> and a catch 25 operable through a slot in the handle 13 and slidable on the shank 11<SP>1</SP> so that the tooth 27 engages the notch 22. A friction spring 23 prevents sliding of the catch and if, during use, the catch is pushed into locking position, the tooth 27, strikes the projection 22<SP>1</SP> and is returned to the non-operative position. In modifications the catch member of the fastening means is pivoted and the blades are scissor blades.
Patent GB-163228-A (GB)
Title: Spark plugs
IPC: H01T13/14
Filed: 1920-07-20
Abstract: 163,228. Myers, H. A. July 20, 1920. Sparking-plugs.- Balls or other loose members placed in a space between the insulator and casing are retained by a shoulder on the insulator. A shoulder may also be formed in the casing. A restricted passage 9 admits the gases, thereby agitating the balls, which may be made of porcelain or other insulating material and are preferably roughened.
Patent GB-139245-A (GB)
Title: Improvements in and relating to motor installations for systems of ship propulsion
IPC: B63H23/00
Filed: 1918-12-30
Abstract: 139,245. British Thomson - Houston Co., (General Electric Co.). Dec. 30, 1918. Motor power plant; driving and transmission mechanism. -An installation for ship propulsion comprises a main turbine 13 having an ahead section to which steam is admitted by way of a valve 17, and a reversing-section to which steam is admitted by way or a valve 18. In case of overloads, steam may be .admitted to an intermediate stage by way of a valve 19 arranged in series with the valve 17. A cruising-turbine 25 is provided and is adapted to be coupled to the main turbine 13 by an electrical coupling A, B as described in Specification 105,153. This coupling is rendered operative, when required, by a switch 27. Steam is admitted to the cruising-turbine 25 by way of a pipe 31 in which is situated a regulating-valve 32 and a governor-operated valve 95. The cruising and main turbines are connected by a steam-pipe 33 provided with a check-valve 33a and a stop-valve 33b. Steam is supplied to the installation by a main conduit 34. In the cruising and main turbine supply conduits are emergency trip valves 105, 151, operated by speed governors, for cutting off steam when the speed exceeds a predetermined limit. The valves 17, 18. 32 are connected to three levers 47c, 53c, 60c by suitable link-work, and arranged in a frame 64 provided with an interlocking-device 77 so that only one of the three levers can be moved to the operative position. The switch 27 is connected to the main turbine and revrsing-levers by suitable link-work, so that when the cruising-turbine is inoperative, the clutch mechanism A, B is also rendered inoperative. It is also connected to the emergency tripvalve 105, so that, when the valve the clutch is rendered inoperative. The installation shown comprises the port side only of a complete ship's installation. The Specification states that the invention is applicable to prime-movers of other types.
Patent GB-336626-A (GB)
Title: Loaded electric signalling cables
IPC: H01B11/14
Filed: 1929-07-17
Abstract: 336,626. Standard Telephones & Cables, Ltd., and Riley, T. N. July 17, 1929. Loading cables.-A continuously loaded electric cable is provided with dissimilar loading materials on different sections, the sections to be used at greater energy level, e.g. the end sections, being loaded with a material of constant permeability over the normal working range, an intermediate section or sections being loaded with material of high resistivity. For the end sections, a material of the following composition may be used, nickel 45 per cent, iron 30 per cent and cobalt 25 per cent. For the intermediate section, a nickel iron alloy containing nickel 78¢ per cent, molybdenum 3 per cent, and the remainder iron, may be used. Reference has been directed by the Comptroller to Specification 339,049.
Patent GB-651494-A (GB)
Title: Improvements in knife-sharpening devices
Inventor: ROSE ALFRED GERMAN
IPC: B24D15/08
Filed: 1948-08-20
Abstract: 651,494. Knife-sharpening devices. ROSE BROS. (GAINSBOROUGH), Ltd. Aug. 20, 1948, No. 21994. '[Class 60] A knife-sharpening device, for knives used for severing webs of paper, film, foil &c. and particularly for paper-cutting knives of wrapping machines for sweets and other articles, of the kind in which the knife is manually held on a support and pressed into engagement with a hone or the like is characterized in that the hone has its operative surface in a given plane transverse to the general plane of the knife support, the hone being arranged for movement in any direction in the given plane. A hone 11 is mounted in a block 12 and held in position by a clamping strip 13 and screws 14. A rod 16 passes through the block 12 and is secured at each end to a guide 17 extending lengthwise of the hone 11 and arranged to slide in a pair of slideways 18 arranged above and below the hone 11 and mounted on a frame 19 secured in an upright position to a bracket 21 itself secured to a bench 22. A support 23 for the knife 33 is carried on a slide member 24 mounted for adjustment in an arcuate slideway 26 formed in a bracket 27 secured to the bracket 21; pairs of rollers 28 rotatably mounted in the bracket 27 act as the top surface of the slideway 26. The radius of the slideway 26 is struck from an axis lying coincident with the edge of the knife-support 23 lying adjacent the plane of movement of the hone 11. A screw 29 arranged in engagement with a threaded hole 31 in the bracket 27 engages one of a series of corresponding recesses 32 formed in the slide member 24 to lock the knife-support in any adjustable position. The hone may be mechanically operated, e.g. by cam or eccentric.
Patent GB-481503-A (GB)
Title: Improvements in or relating to pile-driving and the like
IPC: E02D7/10
Filed: 1936-08-10
Abstract: 481,503. Driving and withdrawing piles. WOHLMEYER, J. Aug. 10, 1936, No. 22014. Convention date, Aug. 9, 1935. [Class 68 (ii)] [Also in Groups XXII and XXVI] A fluid-pressure-actuated hammer for piledriving, pile-drawing, &c. is provided with separate feed pipes to the usual valve chest for effecting upward and downward strokes, the upward feed pipe 8 having a throttle valve 7 and the downward feed pipe 5 a two-way valve 11 which, in one position for pile-driving, gives free passage to the pressure fluid to effect downward striking strokes and in the other position for pile-drawing, as shown, may be adjusted to regulate the rate of entry of air from the atmosphere during downward return strokes. The pipes may be of considerable length with the valves remote from the apparatus. Fluid heating means, the effect of which is proportioned to the flow, may be provided. The Specification as open to inspection under Sect. 91 comprises also the provision of a throttle valve or a spring-loaded container of variable capacity on one only of the pipes. This subject-matter does not appear in the Specification as accepted.
Patent GB-169571-A (GB)
Title: Improvements in spring forks for cycles, motor cycles or the like
IPC: B62K25/24
Filed: 1920-07-23
Abstract: 169,571. Caddick, W. July 23, 1920. Spring devices.-A spring suspension for the front forks of cycles, motor-cycles, &c. is characterized by a bracket or housing E, rigidly attached to the crown of the steering-column C and extending upwards therefrom to form an abutment for the top of the spring D, and a rocking lever F, which at one end is pivoted to the crown and between its ends is adapted to be pivotally connected to the middle lug b of the fork, the free front end carrying an abutment for the bottom end of the spring. The lever F preferably forms the lower link connection betwen the column and the fork. According to the Provisional Specification, the rocking lever rocks upon bear-' ings situated near the mid lug of the fork and its rear end comes into contact with the crown or is connected thereto.
Patent GB-359896-A (GB)
Title: Improvements relating to valves actuated by fluid under pressure
IPC: F16K1/14
Filed: 1930-07-22
Abstract: 359,896. Fluid-pressure brakes. ALDRIDGE, T. J., 20, Via Pier Carlo Boggio, Turin, Italy, and WESTINGHOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London. July 22, 1930, No. 22095. [Class 103 (i).] A pressure-actuated valve for fluid-pressure braking apparatus and particularly applicable to " quick inshot " valves actuated by the pressure in the brake cylinder, is provided with means for protecting the actuating member from pressure due to the flow of the controlled fluid and also with means for increasing, during operation, the capacity of the passage through which fluid is supplied to the actuator. In the form shown in the Figure a ball valve 2 controlling the passage between a passage 5 leading to a triple valve and a passage 7 leading to a brake cylinder is normally held in the open position by a projection 8 on a piston 9 loaded by a spring 10. The piston has a sealing surface 13 contacting with a rib 14 so that outlet pressure admitted through a passage 16 only acts on that portion of the piston surface within the rib. As the piston moves downward against the action of the spring to permit the valve to close, pressure is allowed to act on the whole surface and the tapered projection gradually opens a passage 11 leading to the outlet passage 7. The passage 19 may be connected to an auxiliary brake cylinder. In a modification the passage 16 enters the passage 7 in a direction parallel to the direction of flow to cause an ejector action.
Patent GB-536869-A (GB)
Title: Galvanic batteries
IPC: H01M50/429
Filed: 1939-08-29
Abstract: 536,869. Dry batteries. TRIGGS, W. W. (National Carbon Co., Inc.). Aug. 29, 1939, No. 22100. [Class 53] Associated carbon and zinc plates C, Z and " bibulous " elements such as a separator S and de-polarizer-mix cake M are stacked to form a battery, each cell being isolated from adjacent cells by a sheathing W at the edges extending partly over the flat faces of the cell elements, of thin flexible and impervious natural or synthetic rubberlike stretchable material. The number of the cell plates, enclosed in each wrapping with the " bibulous ", elements may be varied. The stack is maintained under pressure to seal the edges against escape of electrolyte.
Patent GB-368191-A (GB)
Title: Improvements in and relating to the lubricating of axle bearings for rail vehicles
IPC: B61F17/20
Filed: 1931-08-05
Abstract: 368,191. Lubricating axle bearings. PEYINGHAUS, W., Egge, near Volmarstein, Ruhr, Germany. Aug. 5, 1931, No. 22210. Convention date, Aug. 5, 1930. [Class 12 (iii).] In a railway vehicle axle-box wherein a plate c on the end of an arm b secured to the axle dips into an oil well and throws oil on to the wall of the casing, whence it flows to the bearing, the plate is formed with corrugations e, Fig. 1, arranged concentric with the axle or with sinuous radial corrugations f, Fig. 3, whereby the path of oil moving centrifugally along the plate is lengthened. It is demonstrated that such lengthening of the path causes the oil to be projected from the plate as the latter approaches nearer to the upper part of the casing. The ratio between the length of the path of movement of the oil on the plate and the radial length of the latter varies across the plate, so as to ensure an even distribution of oil across the bearing.
Patent GB-458742-A (GB)
Title: An improved small self-starting synchronous electric motor
IPC: H02K19/08
Filed: 1936-08-12
Abstract: 458,742. Alternating-current motors. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Aug. 12, 1936, No. 22213. Convention date, Aug. 22, 1935. Addition to 418,174. Drawings to Specification. [Class 35] In the synchronous self-starting motor described in the parent Specification, the rotor which is cap-shaped and has narrow slits in its periphery but no pronounced poles, is made of thin sheet steel, and the short-circuited winding is dispensed with. By the employment of thin sheet steel, increase in magnetic saturation and remanence are obtained whereby the hysteresis starting torque is increased.
Patent GB-720100-A (GB)
Title: Improvement in fluid sealing bellows
IPC: F16J3/04
Filed: 1951-09-24
Abstract: 720,100. Stuffing-box substitutes. PETERS, M. F. Sept. 24, 1951 [Nov. 29, 1950], No. 22258/51. Class 122 (5). A fluid sealing bellows is formed by securing rigid members 1 between the edges of adjacent pairs of flexible members 2 which have been stretched, by the application of fluid pressure, beyond the elastic limit of the material. The cross-section of the rigid members 1 may be rectangular, V-shaped or T-shaped, as shown in Fig. 2, with the side faces shaped to support the flexible members when the bellows is compressed. Opposing faces 9 of the rigid members are ground or covered with soft material such as rubber, lead, &c., so that they form a seal when abutting. Members 10, Fig. 7, may be provided to act as a secondary seal for the space between adjacent members 1 should the associated flexible member 2 fail. In a modification, the flexible members are annular and are secured at their outer and inner peripheral portions, respectively, to outer and inner concentric axially-spaced'rigid discs.
Patent GB-177750-A (GB)
Title: Improvements in or relating to veil-nets
IPC: A42B5/00
Filed: 1921-08-23
Abstract: 177,750. Shaw, R. Aug. 23, 1921. Veils.-A veil having an elastic thread run 'therein is provided with a free elastic thread disposed so as to form with the run-in thread an endless elastic loop which can be passed over the crown of a hat to retain the veil in position. As shown, elastic threads A, B are run along the upper and lower edges of the veil, and the whole assembled with a free elastic thread E by knots D.
Patent GB-384702-A (GB)
Title: Improvements relating to bottles, jars, cans and other closeable containers
IPC: B65B31/04
Filed: 1931-08-06
Abstract: 384,702. Closures' for bottles and jars. GAUNT, J. G., 6, Bream's Buildings, London.-(Exportingenieure f³r Papierund Zellstofftechnik Ges. ; 3, Duisburgerstrasse, Berlin.) Aug. 6, 1931, No. 22343. [Classes 125 (ii) and 125 (iii).] A bottle, jar, or other container adapted to be closed and sealed under reduced pressure is furnished with a lid 20 which is temporarily held against a resilient seat 19 during the sealing operation, by a spring clip 21 engaging a cup-shaped flange 22 on the container. Water or disinfectant is placed in the cup 22 to form a liquid seal through which gases from the container pass during evacuation. After removal of the clip 21, the flange 22 receives a screwed cap. In the case of a drum or other large container, a screwed flange 30 is provided to receive a hood 23 for connection by a hose 25 to an exhaust pump.
Patent GB-462733-A (GB)
Title: Improved means for detecting electrically the presence of gas or fire-damp in mines and other places
IPC: G01N21/71
Filed: 1935-08-08
Abstract: 462,733. Photo-electric gas detectors. OLDHAM & SON, Ltd., and HOLT, H. Aug. 8, 1935, No. 22418. Drawings to Specification. [Class 40 (iii)] A device for detecting the presence of gas or firedamp in mines comprises a photo-electric cell in circuit with a suitable micro-ammeter and co-operating with a heated filament which is adjustable relative to the cell, e.g. by means of a movable carrier, a barretter being provided in series with the filament to control automatically the current flowing to compensate for any depletion or variation in voltage of the supply to the filament, which is usually fed from accumulators. Specification 448,646, [Group III], is referred to. Reference has been directed by the Comptroller to Specification 440,947, [Group III].
Patent GB-701760-A (GB)
Title: Tension lockup for printing plates
IPC: B41F27/10
Filed: 1951-09-25
Abstract: 701,760. Printing surfaces. GOSS PRINTING PRESS CO. Sept. 25, 1951 [Oct. 21, 1950], No. 22429/51. Class 100 (2) An arcuate printing plate 12 is secured to the cylinder of a rotary printing machine by fingers 21 on levers 20A, 20B mounted on rock shafts 19 and engageable in under-cut pockets 14 in each circumferential end of the printing plate, the fingers being moved to their engaging positions by links 26 connected to a common nut member 29 movable by a draw-bolt 30. In order to ensure an accurate location of the plate with respect to the cylinder, the lever 20B is arranged to abut an adjustable stop 32 in the engaging position as shown by the left-hand side of Fig. 1. Springs 49, 50 are provided to urge levers 20A, 20B toward their plate retaining positions, the spring 50 being the stronger so that the lever 20B reaches its final plate locating position in abutment with the stop first. The drawbolt 30 has a ball head 39 retained in a socket formed of parts 40, 41 allowing some angular freedom. A collar 48, loosely mounted on the bolt, is located in an opening 46 in the cylinder,to limit the angular displacement of the drawbolt about the ball 39. In another form, Fig. 3, the plate 12 is located by the abutment of its end with the edge of a T-section strip 56 adjustably secured to the cylinder. A small gap 62 is left at the other end of the plate and the plate is biased by a stronger spring 50 to urge its locating end against the strip 56. Specification 622,473 is referred to.
Patent GB-466456-A (GB)
Title: Improvements in or relating to telegraphic transmitting apparatus
IPC: H04L21/02
Filed: 1936-08-14
Abstract: 466,456. Ratchet gearing. STANDARD TELEPHONES & CABLES, Ltd. Aug. 14, 1936, Nos. 22459 and 22460. Convention dates, Sept. 4, 1935 and Jan. 24, 1936. [Class 80 (iii)] [Also in Group XL] In pawl and ratchet wheel mechanism in which the pawl 106 is normally out of engagement with the ratchet wheel 105 and is moved into engagement therewith when it is desired to rotate the wheel, it may happen that the pawl engages the edge of one of the teeth and causes damage. To prevent this, a second ratchet wheel 135 is mounted alongside and resiliently connected to the ratchetwheel 105, the arrangement being such that if the pawl now catches the edge of one of the teeth of wheel 135, this wheel is moved forwards until the pawl makes a proper engagement with a tooth of ratchet wheel 105.
Patent GB-1303953-A (GB)
IPC: B63H1/04
Filed: 1971-04-19
Abstract: 1303953 Outboard drives NISSAN MOTOR CO Ltd 19 April 1971 [24 Feb 1970] 22505/71 Heading B7V Shaft 10 driven by an inboard motor (not shown) drives propeller 44 through a shaft 25 housed in a torque tube 27a, and a shaft 31 provided with a universal joint 43, the centre of which is aligned with shaft 25. Shaft 31 is carried in a housing 27b rotatable about tube 27a by a steering linkage 59-63. A second universal joint 17 permits the outboard unit to be pivoted upwardly either by cable arrangement 46-49, or by the effect of the unit striking an obstruction. A clutch 26 can engage either of bevel gears 21 or 22 with shaft 25 to effect forward or reverse drive. In a modification (Fig. 3, not shown) reverse drive is provided by a planetary gearing (66) and the universal joint 43 is replaced by another universal joint 43<SP>1</SP>a at the upper end of shaft 25.