baber/WOPTO huggingface dataset:
Patent GB-1454212-A (GB)
Title: Polyphase synchronous electrical machine having a superconductor field winding
IPC: H02K19/26
Filed: 1974-02-20
Abstract: 1454212 Superconducting generators AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 20 Feb 1974 [21 Feb 1973] 7829/74 Heading H2A A polyphase synchronous electrical machine comprises a polyphase stator winding 11, a rotary assembly comprising a superconducting D.C. field winding 15, a shaft 14 for transmitting mechanical power and a polyphase auxiliary winding 28, and a servo circuit for circulating, in response to imbalance of the stator winding currents, currents in the auxiliary winding to create a rotating field to compensate for the low frequency variations of the magnetic field of the stator winding in unbalanced operation. The auxiliary winding thus protects the superconducting winding from the effects of low frequency fields, e.g. caused by unbalanced load or fault conditions, to complement the high frequency protection of the conventional shield 27. The machine shown is an alternator and part of the auxiliary winding 28 may also carry a steady direct current to produce a torque to counteract any torque tending to rotate the field winding 15 relative to shaft 14. Members 22 connecting the field winding 15 and cryostat 19, 20 to the shaft 14 may therefore be of low mechanical strength. Reference has been directed by the Comptroller to Specification 1,282,412
Patent GB-490249-A (GB)
Title: Improvements in or relating to filters
IPC: C12H1/07
Filed: 1937-03-17
Abstract: 490,249. Filters. GASKELL & CHAMBERS (LONDON), Ltd., and HORNSEY, W. E. March 17, 1937, No. 7861. [Class 46] A filtering device suitable for use in filtering beer or other malt liquors comprises two vessels 1, 2, each provided with a foraminated member, the vessels trapping between them a flexible filtering sheet 18, e.g. filter paper, which is spaced from the upper foraminated member and supported by the lower member. As shown, the upper member 11 of wire gauze is soldered to a ledge 10 on the vessel 1. The lower member 17 consisting of a perforated disc is soldered to a ledge 16 on the vessel 2.
Patent GB-544248-A (GB)
Title: Improvements in or relating to moulded hollow blocks for building purposes and machines for manufacturing such blocks
IPC: B28B7/18
Filed: 1940-05-02
Abstract: 544,248. Moulding building blocks. MNDMAN, E. I. May 2, 1940, No. 7901. Convention date, April 28, 1939. [Class 87 (ii)] [Also in Group X] Blocks are moulded in a box 5 vibrated at the rate of 1,000-7,000 vibrations per minute by a belt-driven unbalanced rotary member 6a which causes the concrete mixture to pack down closely in the box in contact with a number of rows of fingers 7 rigidly fixed to the box and passing through apertures in the movable box bottom 9, the mass being pressed down by a plate 21 on a pivoted arm 20. The vibrator is then stopped, the plate 21 raised and the box bottom 9 with the apertured block thereon pushed upwards from the box by plates 16 on a block 15 carried by the plunger of a pneumatic &c. cylinder 13.
Patent GB-1419037-A (GB)
Title: Timepiece
IPC: G04B19/04
Filed: 1974-02-21
Abstract: The display device includes on its lower part a fixed dial (4) which can have an ordinary arrangement. It is however coated with a polarising layer. Above this dial, the hour and minute indicator members (3 and 2) are transparent discs provided with guide marks (6 and 5). The disc (3) is covered with a polarising layer, so that the bottom of the dial varies gradually in aspect between a dark shade and a bright shade when it is viewed through the disc (3). The glass (1) can have an opaque decoration (7). The guide mark (6) may represent a sun and the polarising layers may be configured so that the dial shows a bright shade at midday and at 6 h and a dark shade at 3 h and at 9 h. <IMAGE>
Patent GB-339572-A (GB)
Title: Improvements in or relating to wash stands
IPC: A47K1/02
Filed: 1930-03-12
Abstract: 339,572. J÷rgensen, P. March 12, 1930. Lavatory basins. - A packing-strip d with a downturned flange e is fitted over the rim of a wash-stand basin b under a table top a so as to prevent splashings passing over the rim. An upturned flange f enters a groove in the underside of the table top. A small space between the parts a, d prevents water from accumulating and rotting the wood.
Patent GB-178286-A (GB)
Title: Improvements in and relating to electric heaters
IPC: F24H1/10
Filed: 1921-03-14
Abstract: 178,286. Durando, G. March 14, 1921. Addition to 154,183. Heating by electricity; electrode furnaces; re. sistance furnaces.-Fluid such as a mixture of different gases and vapours or liquid is circulated through the pipes embedded in the heat storing layers of apparatus constructed as described in the parent Specification and the circuits thus formed may be closed for utilization elsewhere and the heat absorbed. Circulation may be assisted by pumps.
Patent GB-1217697-A (GB)
Title: Improvements in plug cock seating rings
Inventor: BENTLEY-LEEK HERBERT
IPC: F16K5/08
Filed: 1968-02-19
Abstract: 1,217,697. Valves. SAUNDERS VALVE CO. Ltd. 12 Feb., 1969 [19 Feb., 1968], No. 7999/68. Heading F2V. A seating ring 1, for a rotary plug cock, not shown, has its radially innermost face formed, in the axial direction, with merging concave, convex and cylindrical surfaces 2, 3 and 4 respectively, with the cylindrical surface being parallel to the ring axis, and its outer face formed with a radially outwardly projecting rim 7, and an axially extending cylindrical surface 5. The rim 7, whose axial dimension decreases in the radially inward direction, is securable between the plug cock parts for retention of the ring, whilst the surface 5 is so dimensioned as to tightly engage one of the plug cock parts witho ut being secured to it. The ring end face 8 is formed with an annular groove 9 from which extend, in the radially inward direction, four slots 10. The plug cock spherical valve member floats between the seating rings engaging only the convex surfaces 3. Specification 843,149 is referred to.
Patent GB-421173-A (GB)
Title: Improvements in and relating to apparatus for grinding material in a more or less viscid condition
IPC: B02C4/34
Filed: 1933-03-17
Abstract: 421,173. Roller-and-breast mills ; disc mills. SONSTHAGEN, A., 10, Broad Walk, Snaresbrook, London. March 17, 1933, No. 8131. [Class 59] In a mill in which a bar or member acts on a roller or disc means for preserving the width of the gap for the passage of material under all conditions of wear or distortion comprises fluid actuating means acting on one member or group of members and disposed at a suitable point or points along the member or members so that an equal pressure may be applied to the member throughout its length or the pressure at any desired point or points varied. As shown the grinding bar 1 is L-shaped the foot of the L bearing on the roll 2 whilst the stem is slotted at 1<a> in order to make the bar flexible. The stem of the L-shaped member is housed in a recess 6, Fig. 4, in a holder 4 secured by bolts 4b to the frame of the mill. The holder is provided with hydraulic plungers 12 pressing by means of stems 14 on the bar 1. An adjustable wedge 8, Fig. 4, secures the bar 1 in the recess 6. Pressure to the plungers is supplied by a pump, and a gauge which indicates the pressure of the liquid also indicates the relative pressure of the bar on the roll. The bar may be short and not slotted. The bar may act on a disc or several rollers and bars may be used. A roller may be made flexible by scoring the surface or by weakening the roll shaft.
Patent GB-144419-A (GB)
Title: Improvements in electrical fuses
IPC: H01H85/30
Filed: 1919-04-01
Abstract: 144,419. Wynne, A. C. April 1, 1919. Fusible cut-outs of the carrier type in which the fuse-holder embodies a displaceable slide normally held in a neutral position by the fuse wire but displaced on the blowing of the fuse to interpose a body of insulation between the fuse terminals. The slide is displaced wholly or mainly by the action of the gases generated on the fuse blowing. The slide may act as an indicator. A slide e is mounted in a guideway d extending from front to back of the fuse-holder a, and preferably in a downwardly inclined direction. It has a hole e<1> through which the fuse wire c passes, and behind this hole is a gas escape passage e<3> and a portion e<2> acting as the arc-breaking insulation. The gases are retarded in their exit from the slide by the formation of the gas escape hole e<3>, by a cover-plate f, and by the upper wall of an open-sided recess into which the back! of the fuse-holder projects; in consequence, they act mainly upon the front portion of the hole e<1> in the slide and effect' the displacement. In the form shown, this is assisted by gravity. The slide e is formed so that, though normally no part projects from the holder, the lower end may project through the bottom part of the front of the holder to indicate that the fuse has blown. The slide may be made of substantial dimensions and of relatively heavy material.
Patent GB-811023-A (GB)
Title: Sealing means for reciprocating members, particularly pistons
IPC: F16J9/06
Filed: 1957-03-12
Abstract: 811,023. Piston packing. BENDIX AVIATION CORPORATION. March 12, 1957 [March 19, 1956], No. 8157/57. Class 122 (1). Piston packing housed in an annular groove 20 in the piston 10 comprises a metal cap jointed piston ring 14 and a rectangular section rubber ring 16 in sealing contact with the inner periphery of the piston ring and having an internal diameter greater than the diameter of the groove 20 and a width less than that of the groove but greater than half the width of the piston ring. The piston ring is step cut at the joint 18 so that the width A plus B at the joint is equal to or greater than the width C of the ring.
Patent GB-1030356-A (GB)
Title: Brake drum having a device for damping braking noises
IPC: F16D65/10
Filed: 1964-02-28
Abstract: 1,030,356. Damping brake squeal. ADOLPH SAURER Ltd. Feb. 28, 1964 [May 7, 1963], No. 8347/64. Heading F2E. In order to damp brake squeal noises in drum brakes, a brake drum 1 is provided at its outer periphery with at least one cavity which extends around the outer periphery of the drum and is nearly filled with a loose, fine-grain non- caking particles of damping composition of high specific gravity, such as steel shot. The cavity may be in the form of a groove or grooves 2, 3 (Fig. 1) filled with steel shot 7 acting as a sound absorbing medium. The grooves 2, 3 are covered by means of a metal band 5 of which the ends are welded together. In the alternative embodiment shown in Figs. 3 and 4 (not shown) the cavity may be in the form of a tube 20 filled with steel shot and arranged so as to fit tightly around the periphery of the brake drum when a tensioning device 22 has been tightened.
Patent GB-952643-A (GB)
Title: Improvements in or relating to valve sacks
Inventor: CHAPMAN MICHAEL CLIFFORD
IPC: B65D30/24
Filed: 1961-03-07
Abstract: 952,643. Opening block-bottom bags. REED PAPER GROUP Ltd. June 6, 1962 [March 7, 1961], No. 8353/61. Heading B8K. A marginal strip 10 (Fig. 3) of a sheet 1 (Fig. 1) folded in the valve-bottom of a block-bottom bag is left unadhered, or only lightly adhered, to the adjacent bottom flap and serves to enable the block-bottom to be readily opened by hand. The inner portion of the sheet 1 is adhered to the bottom flaps before folding, and the sheet is then folded with the flaps so that one margin lies between the bottom flaps 3, 4. The other margin of the sheet is adhered to the bottom flap 4 at 9 (Fig. 3). Where the bag includes a layer of paper lined with polyethylene the sheet 1 is preferably of the same material and may include a marginal strip 2 (Fig. 1) folded over to provide a paper to paper bond with the bottom flap 4. The bag may be single- or multi-ply and may be of kraft paper. The valve sheet 1 may extend beyond the corner of the bag to provide a portion tucked inside the valve after filling. The paste may be applied in separated spots or lines.
Patent GB-212751-A (GB)
Title: Improvements in soldering aluminium
IPC: B23K35/00
Filed: 1923-03-24
Abstract: 212,751. Mumford, E. M., and Butterworth, T. S. March 24, 1923. Alloys. - A mechanically strong joint in aluminium is produced by a solder consisting of an alloy of 2 per cent of aluminium, 37 per cent of zinc and 61 per cent of tin. This is coated with an alloy of 98 per cent of tin and 2 per cent of copper in order to prevent disintegration of the jcint in the presence of air or moisture.
Patent GB-276264-A (GB)
Title: Improvements in or relating to tins, canisters and the like
Filed: 1927-03-28
Abstract: 276,264. Robinson & Co., Ltd., F., and Robinson, F. G. March 28, 1927. Opening by cutting or tearing.-The tag or tongue provided to fecilitate detachment of the " strip band " of the lid of a tin is rolled or bent over the " key " and soldered to the adjacent portion of the strip band, the key being raised when it is desired to open the tin. In the form shown in Fig. 2 the tag is passed through the eye 7 in the shank of the key, and rolled around the shank, and is soldered at 5, 6 to the tin and the strip band 2 respectively. The key is shown in the raised position ready for use. Fig. 3 shows a tin provided with a hook-ended key, for securing which a smaller rolled tag 3 suffices. The tag or tongue may be formed out of the strip band, separate therefrom, or of double thickness comprising separate and integral portions.
Patent GB-950206-A (GB)
Title: Improvements in pattern wheel and knitting machine combination
IPC: D04B15/76
Filed: 1961-03-08
Abstract: 950,206. Knitting machines. M PHILIP. March 8,1961, No. 8467/61. Heading D1C . A pattern wheel for a circular knitting machine has slots, containing inserts which control the needles to form a pattern, these slots being divided into groups and during each complete rotation of the needle cylinder or dial only the slots of one group are engaged by the needle butts, a gap being provided between two of the needles of a width suitable to change the group of wheel slots engaged in the next rotation of the needles. As shown, pattern wheel 8 rotates freely on an obliquely mounted shaft 9 and has the slots arranged obliquely on its edge. Inserts 13 placed in slots 12 determine the positions of the needles i.e. whether they will knit or tuck. Pattern wheels with 2, 3, 5 and 7 groups of slots are shown, e.g. 7 in Fig. 7, the slots of different groups being shown of different depths merely to distinguish between them.
Patent GB-889942-A (GB)
Title: Improvements in and relating to electric discharge lamps
Inventor: CLARKE MAURICE GEORGE
IPC: H01J5/24
Filed: 1957-03-14
Abstract: 889,942. Discharge lamps. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 6, 1958 [March 14, 1957], No. 8483/57. Class 39(1) A tubular discharge lamp which may be fluorescent, is sealed at at least one end by a closure member carrying an electrode, the or each joint of the closure member and the envelope wall incorporating a member made of polytetrafluoroethylene (PTFE) or polymonochlorotrifluoroethylene , (PCTFE) and which is deformable under pressures of the order of atmospheric pressure and which has low vapour pressure in vacuo. In the construction shown in Fig. 1 the closure member 2 is made of glass and a gasket 6 of PTFE or PCTFE is positioned between parallel frustoconical surfaces of the member 2 and the envelope wall 1. In general the pressure difference between the atmosphere and the inside of the envelope maintains the seal, but if the gasket 6 is made of PCTFE the rims of the closure member and the envelope can be heated after assembly in order to cement over the end of the gasket and cause it to adhere to the rims of the closure member and envelope. In the construction shown in Fig. 5 the frusto-conical surface of the closure member 2 is outside the frusto-conical rim of the envelope wall 1. In modifications the closure member is made of metal and the, or each lead to the electrode is brought through the closure member by way of a glass-to-metal seal. In the construction shown in Fig. 2 the closure member 2 is formed of PTFE engaging with the frusto-conical rim of the envelope, and the leads 4, 5 are formed with an enlargement 7 embedded in the closure member. In the construction shown in Fig. 4 the closure member 2 is formed of PTFE and has a lip 10 seating on the reduced neck portion 11 of the envelope 1. The pressure difference between the outer atmosphere and the inside of the envelope expands the rim of the closure member 2 and forms the lip 10 when the member is applied to the heated envelope or is heated in contact with the envelope, Various permutations of the constructions described can be used. In the construction shown in Fig. 6, using a non-pre-heated electrode 3, the closure member 2 is of metal and has a single central contact 12, one end of the electrode being insulated by a glass bead 13. A gasket of PTFE or PCTFE is used and outgassing of the electrode is effected by connection of the closure member and lead 14 to a supply source. Evacuation of the lamps may be effected by the method described in Specification 889,941. According to the Provisional Specification the PTFE or PCTFE can be replaced by a silicone rubber.
Patent GB-472405-A (GB)
Title: Improvements in or relating to apparatus for dispensing a predetermined quantity of liquid
IPC: G01F11/02
Filed: 1936-03-21
Abstract: 472,405. Delivering measured quantities of liquids. EASDALE, D., and ADAMS, B. March 21, 1936, No. 8516. [Class 106 (v)] Apparatus for dispensing a predetermined quantity of liquid comprises a nozzle c adapted to be connected with a supply pipe c<1> and housing an outlet valve k and a piston f, the arrangement being such that when the valve is raised by means of a downwardly projecting stem r, the supply pressure causes the piston f to descend thus discharging a predetermined quantity of liquid from beneath it through the outlet around the stem r and at the end of its stroke reseating the valve. This piston is then moved back to its upper position by a spring k, liquid from the supply leaking past the piston to refill the measuring chamber. The stroke of the piston may be made adjustable.
Patent GB-787386-A (GB)
Title: Improvements in guide roller assemblies for pit cages, skips and the like
IPC: B66B7/04
Filed: 1954-03-25
Abstract: 787,386. Mine cages and skips. ALLEN & SONS (TIPTON), Ltd., W. G., HALE, A. L., ANDRE RUBBER CO., Ltd., and MARSH, S. W. June 23, 1955 [March 25, 1954], No. 8681/54. Class 78 (3). Each roller 5 of a roller guide assembly for a pit cage or skip is urged into contact with the guide rail by a device comprising a weak spring 15 in series with stronger springs 16 which alone absorb major shocks due to excessive oscillation of the cage or skip. The spring 15 is a coiled spring bearing on a washer 20 and acting against a collar 19 on a ferrule 17 which engages an abutment 14 on a roller supporting lever 7, and which is adapted to contact washer 20 when spring 15 has been completely compressed. Springs 16 are rubber bushes. A nut 22 is provided to prestress the device. In a modification (Fig. 4, not shown) the coiled spring is replaced by a conical rubber bush.
Patent GB-269719-A (GB)
Title: Improvements in and relating to door bells and like alarms
IPC: G10K1/072
Filed: 1926-03-31
Abstract: 269,719. Reed, A. March 31, 1926. Bell-operating mechanism, hand, clockwork, and spring-driven; clappers and other strikers. - A cord x passing over and secured to a pulley h<2> integral with an operating wheel g is attached at one end to a weight p and at the other end to the rod d of a push a, which is held in the outward position by the spring c. The operating wheel g carries at its periphery rollers g<2> which engage a rocking lever k connected by a cable o to wire springs l, n, the former of which carries the bellhammer l<2>. The cable x may pass over intermediate pulleys such as f. Operation of the push a, which may be secured to a door jamb, allows the weight p to fall, causing rotation of the wheel g and sounding of the bell. The return of the push by the spring c lifts the weight and again sounds the bell. In a modification, the pulley h<2> may be connected to the operating wheel g through a one-way clutch, so that only a single operation of the bell is obtained. A single bell may be operated by a number of pushes by means of a roller r, Fig. 6, connected by a cable with the striking mechanism h and weight p. Cables from separate pushes are attached directly to weights p<2>, p<3>, &c., each heavier than the weight p, which are also attached to cables wound round and secured to the roller r. The falling of the weights may control an indicator.
Patent GB-1103285-A (GB)
Title: Imidazolidine derivatives
Inventor: DINWOODIE ANDREW HARPER
IPC: C07D233/52
Filed: 1966-02-20
Abstract: 1,103,285. Imidazolidine derivatives. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 Nov., 1966 [28 Feb., 1966], No. 8763/66. Heading C2C. 4,5 - Dihydroxy - 2 - nitriminoimidazolidine or an ether derivative thereof may be obtained by reacting nitroguanidine with glyoxal under alkaline conditions and optionally etherifying the product. The reaction may be effected in an aqueous medium at room temperature and the glyoxal starting material is suitably employed in the form of its polymeric monohydrate. It is possible that the above product may exist in an unsymmetrical form, e.g. 4,5-dihydroxy-1-nitroimidazolidin-2-imine.
Patent GB-546931-A (GB)
Title: Improvements in or relating to steam or like pressure cookers, digesters and the like
IPC: A47J27/08
Filed: 1941-02-03
Abstract: 546,931. Sterilizer. FARISH, T. G. Feb. 3, 1941, No. 8826/42. Divided out of 546,913. [Class 81 (i)] [Also in Group XIII] A pressure cooker or sterilizer has a body formed in two parts a, b, held together by screw threads or projections a<SP>1</SP>, b<SP>1</SP> which are brought into interengagement upon the relative rotation of the two parts by means of a pinion e and a rack d.
Patent GB-583906-A (GB)
Title: Improvements in liquid level
IPC: G01C9/30
Filed: 1944-05-09
Abstract: 583,906. Levels. BENDIX AVIATION CORPORATION. May 9, 1944, No. 8840. Convention date, Sept. 3, 1942. [Class 97 (ii)] In a spirit level for use with sextants and the like, the bubble chamber 10 communicates with a reservoir 20, which contains an air pump 27 connected to the reservoir 20 by a flexible sealing member, e.g. the resilient bellows 37. As shown, the air pump is in the form of a piston 28 with an integral sleeve 29 which closely surrounds the cylinder 22. Upon operation of the piston air passes from the top of the reservoir 20, via passages 34, 33 in the piston, cylinder 22 and passages. 23, 24, to the chamber 10 to form a bubble of desired size. Spring-controlled non-return. valves 25, 35 are provided in the passages 23 and 33 respectively. Specification 516,389 is referred to.
Patent GB-706236-A (GB)
Title: Improvement in auxiliary centering cam for airplane cross-wind landing wheels
IPC: B64C25/50
Filed: 1952-04-07
Abstract: 706,236. Aircraft undercarriages. GOODYEAR AIRCRAFT CORPORATION. April 7,1952 [May 24, 1951], No. 8843/52. Class 4 A centering device for casterable aeroplane wheels is characterized in that an auxiliary cam and follower are provided to centre the wheel from small castering angles when the main cam slope and resulting torque are small. King pin 5 is fastened at 4 to a hollow hub 3, and passes pivotally and slidably through axle 1, the king pin being tilted forwardly and downwardly. The main cam 12 is fastened to the hub 3, and the main cam follower 10 to the axle. Spring 13 presses the follower against the cam when the plane is airborne. To provide a torque greater than the opposing friction, at small castering angles, when the main cam slopes are small, an auxiliary cam 16 is fastened to the axle, and an auxiliary cam follower 20 to the king pin, the arrangement, best seen in Fig. 8, being such that the steep slopes of the auxiliary cam come into action just before the torque from the main cam drops below the minimum effective value. Spring 19 presses the cam and follower together when the plane is airborne. Specification 642,169 is referred to.