baber/WOPTO huggingface dataset:
Patent GB-818562-A (GB)
Title: Self-priming centrifugal pump
Inventor: GUY ARCHIBALD
IPC: F04D9/02
Filed: 1955-05-25
Abstract: 818,562. Centrifugal pumps. CARRUTHERS & CO. Ltd., J. H. Aug. 27, 1956 [May 25, 1955], No. 15045/55. Class 110 (1). A self-priming centrifugal pump comprises auxiliary impeller vanes 11 on the back of the main impeller, the passages between the vanes extending downwardly so as to enter the passages between the main impeller vanes 10 towards their outer ends, During priming, the vanes 11 draw water from a header tank 12, 12A which has previously been topped-up if necessary through a filler opening 15. The water, as it enters the end regions of the passages between the vanes 10, entrains air from the suction chamber 18 which is connected to the suction pipe through a non-return valve 21. The mixture of water and air enters the tank 12, 12A from the delivery pipe 22 through a valve 24, the air escaping through an airvalve (not shown) at the top of the tank. On completion of priming, a non-return discharge valve 27 opens and lifts the valve 24 into a partially closed position in which it allows some water to return to the tank 12, 12A during normal pumping to replace the water being pumped by the auxiliary vanes 11.
Patent GB-1211407-A (GB)
Title: Digital data message transmission
Inventor: WRIGHT ESMOND PHILIP GOODWIN
IPC: H04Q1/39
Filed: 1968-03-28
Abstract: 1,211,407. Digital transmission systems; signalling between exchangers. STANDARD TELEPHONES & CABLES Ltd. 28 March, 1968, No. 15050/68. Headings H4K and H4P. In a digital transmission system messages to be transmitted, e.g. telephone network signals, are stored prior to transmission. The signals form bytes of fixed length. The store is scanned prior to the transmission of each byte and data from the message of highest priority currently in the store is read out and assembled in the byte. As described each byte starts with a tag bit and ends with an error-check word added prior to transmission. If a byte relates to a message having different priority from that of the previous byte a signal indicating the priority category is added, such a byte is called a label byte. The tag bit of a label byte differs from that of other bytes. The transmitted bytes are stored so that they may be retransmitted if an error is detected at the receiver. The highest priority message is an answer signal and consists of one label byte. The next lower priority messages are dialling signals. These are sent in a group of bytes, the number of bytes required being indicated in each byte. The next lower priority messages are management signals. These are divided into groups containing a fixed number of bytes. The groups are numbered successively, each byte including the number of its group. The lowest priority messages are test signals. Fig. 2 shows an example of the flow of signals. A block of management signal bytes, numbered 1, is preceded by a label byte. The second block, numbered 2, is interrupted by an answer signal byte, whereafter the label byte of block 2 is repeated and the remainder of block 2 transmitted. Block 3 is interrupted by a dialing signal block of three bytes, preceded by a label byte, after which the label byte of block 3 is repeated and the remainder of block 3 transmitted.
Patent GB-1493196-A (GB)
Title: Methods of producing glass articles with ophthalmically finished surfaces
IPC: C03B23/03
Filed: 1975-04-11
Abstract: 1493196 Ophthalmic quality glass articles AMERICAN OPTICAL CORP 11 April 1975 15075/75 Heading ClM A glass article having at least one surface of ophthalmic quality is made by: (a) covering at least one surface of a first layer of glass with a layer of a removable glass, the glasses being fused together along their interface to form a preform; (b) flattening the preform so that a smooth surface is produced at the interface; (c) heat-softening and shaping the preform to at least approximately the desired shape; and (d) removing the covering layer of glass to expose the smoothed surface of said first glass. The first glass layer 22 (fig. 3) may be formed on the surface of molten tin 28, the covering glass 30 being applied to the upper surface 36 (from supply 32 of molten glass) to form preform 18. Covering glass 30 may alternatively be applied in frit form (Fig. 7, not shown). Preform 18 may be flattened on the molten tin surface, or between rollers (34). Preform 18 may alternatively be formed by vapour deposition of the coating glass on a rigid piece of the first glass (Fig. 8, not shown), or by forming a rod/tube assembly which is heated and drawn down to a flat preform configuration (Fig. 9, not shown). Preform 18 (Fig. 4) may be cut into lens blanks 40 at station 38, the blanks 40 then passing along conveyer 44 before loading into moulds 46. In moulds 46 the blanks may be pressed by plunger 52 to form a lens of meniscus configuration (Fig. 5, not shown). The glass covering layer, which preferably has an expansion coefficient compatible with that of the first glass layer, is then removed, e.g. by etching in 5-10% by volume HCl solution at about 65 C. (Fig. 6, not shown). A suitable glass for the substrate is ophthalmic crown glass, and the covering glass may consist of, by weight: SO 2  12À7%, B 2 O 3  17À2%, BaO 46%, Al 2 O 3  2%, La 2 O 3  12%, ThO 2  9À6% and As 2 O 3  0À5%.
Patent GB-909670-A (GB)
Title: Elastomer recovery from hydrocarbon solution thereof
IPC: C08C2/06
Filed: 1961-04-26
Abstract: A solid synthetic elastomer prepared by solution polymerization is recovered from its solution in a hydrocarbon diluent by admixing therewith a sulphide, coagulating to a solid crumb, separating off the solvent and drying.  Specified elastomers are cis-1.4-polyisoprene, cis-1.4-polybutadiene and ethylene-propylene copolymers.  Specified sulphides are hydrogen sulphide, sodium or potassium hydrosulphide, sodium or potassium tetra- and penta-sulphides, the alkaline earth metal sulphides, hydrosulphides and polysulphides, allyl sulphide, diisobutyl sulphide, ethyl disulphide, amine sulphides and ammonium sulphide. Rubber extender oils may be added before the elastomer is coagulated.
Patent GB-1490400-A (GB)
Title: Mechanical jack
IPC: B66F1/06
Filed: 1976-04-15
Abstract: 1490400 Mechanical jacks R A LISTER & CO Ltd 15 April 1976 [15 April 1975] 15342/75 Heading B8J A mechanical jack includes a holding pawl 23 and a pawl 17 to be actuated by a pivotally mounted handle 5, the pawls 23, 17 being urged normally into engagement with a load-carrying rack by respective springs 21, 18. A first spring member 30, part of a hairpin-type spring 12, stronger than the spring 18 is arranged to rerelease the pawl 17 from engagement with the rack 3 when a releasing plunger 9 carried by the handle 5 is moved into a rack-lowering position (as shown) and when the handle 5 occupies an upper position, Fig. 1 (not shown). A second spring member 11, also part of the spring 12, stronger than the spring 21 is arranged to release the pawl 23 from engagement with the rack 3 towards the end of a downstroke of the handle 5 with the plunger 9 occupying its racklowering position, the downward movement of the handle 5 simultaneously urging the pawl 17 into engagement with an upper portion of the rack 3, the bias of the spring member 11 being removed during subsequent movement of the handle 5 toward its upper position to enable the pawl 23 to engage a further portion of the rack 3. According to the invention the pawl 17 is arranged to be urged by a resiliently moveable cam 34, shown as a spring 35 bolted to casing 1 acting on a pin 33 projecting from the pawl 17, into engagement with an upper portion of the rack 3 towards the end of the downstroke of the handle 5, with the plunger 9 in its rack-lowering position.
Patent GB-397627-A (GB)
Title: Improvements in holders or cases for rolls or tape
IPC: B65H35/00
Filed: 1932-05-31
Abstract: 397,627. Holders for rolls of tape &c. CARPENTER, W. M. and SHAW, A. P., 22, Hamilton Square, Birkenhead. May 31, 1932, No. 15382. [Class 18.] A holder or case of wood, cardboard, metal, or phenolformaldehyde con. densation product for rolls of material comprises a cylin. drical body 4 having an opening 8 parallel with its axis, and provided with a knife blade 15 mounted in a recess 14 in the cylindrical body tangential to a circle concentric with the holder. End caps such as 1 are provided on the body, one of them having a window 3 for observation of the contents. The end caps are held together by a flanged tube 19 and have bosses 6 to receive a spool of tape 7. The tape is withdrawn through the slot 8, and is clamped for cutting by a hinged guard 10 having a projection 11 and a lip 12. After severing the tape against the blade 15, which is held in the recess 14 by a peg 16, the guard 10 is swung upwardly by the lip 12, the tape adhering to the abutment 11 so that it may be easily grasped for fresh withdrawals.
Patent GB-753131-A (GB)
Title: Improvements in or relating to low resistance connections to germanium
Inventor: MAYER SIMON ERNST
IPC: H01L21/288
Filed: 1953-06-04
Abstract: 753,131. Electrodeposition of nickel-tin alloys on germanium; semi-conductor devices. STANDARD TELEPHONES & CABLES, Ltd. May 28, 1954 [June 4, 1953], No. 15391/53. Classes 37 and 41. [Also in Group XXII] In making a low-resistance electrical connection to a germanium crystal surface, metastable nickel stannide is electrodeposited thereon and the deposit heated to 250-300 C. to release tin from the stannide. The nickel-tin alloy coating may be tinned with soft solder and this tinning may be combined with the heating step by applying a layer of solder to the electroplated surface and heating to 250- 300 C. The nickel stannide (65 per cent tin- 35 per cent nickel) is preferably plated in an aqueous fluoride bath but a chloride bath may be used.
Patent GB-272538-A (GB)
Title: Improvements in the destructive hydrogenation of carbonaceous materials
IPC: C10G1/06
Filed: 1927-06-10
Abstract: 272,538. I. G. farbenindustrie Akt.- Ges. June 11, 1926, [Convention date]. Materials for purifying.-In the production of oils of low boiling-point by the destructive hydrogenation of carbonaceous materials, the unconsumed hydrogenating gases, which have already been freed from the liquid reaction products, are scrubbed under pressure with benzines, preferably those produced by a similar destructive hydrogenation, to remove gaseous hydrocarbon.
Patent GB-108958-A (GB)
Title: Improvements in Locks, Latches and the like.
Inventor: HAGGER ALFRED
IPC: E05C1/16
Filed: 1916-10-31
Abstract: 108,958. Hagger, A. Oct. 31, 1916 Latches, sliding.-A lock or latch is provided with an inclined sliding bolt b projected by its own weight and withdrawn by a follower i engaging a notch g. The bolt rests on friction rollers c, and the handles may be eccentrically mounted on the spindle j so as normally to retain the follower i in the position shown.
Patent GB-458925-A (GB)
Title: Improvements in or relating to seats
IPC: B60N2/18
Filed: 1935-05-29
Abstract: 458,925. Vehicle seats. BLYTH, J. P., Hill, near Rugby. May 29, 1935, No. 15601. [Class 52 (ii)] In seats of the type in which a pivotally mounted back-rest B is also pivotally con. nected to a fore-and aft movable seat proper S, the positions of the respective pivots A, B are chosen to offer mini mum restraint to motion of the parts while these are affording the desired support to the occupant. As applied to a motor-vehicle driving seat, rollers R carried by the seat S move in slots in frame-members J, the slots being so inclined as always to support the driver's thighs while his feet are on the pedals D, the pivots H are approximately aligned with his hip-joints, and the pivots A with his elbows when his hands are holding the steering- wheel C. A graphical method for determining the limits of the slots j in relation to the pivots H, based on average anatomical dimensions of a driver and the position P of his heels, is described. The seat S is forwardly biassed by shock-absorbing compression springs T, Fig. 4, which are fully extended when the seat is in its foremost position. The frames J and brackets E for the pivots A are carried on an adjustable base F. Adjustable friction washers may be provided at the pivots A to control the freedom of movement of the parts.
Patent GB-201701-A (GB)
Title: Improvements in or relating to mountings for spring roller maps for use on motor vehicles
IPC: E06B9/50
Filed: 1922-12-09
Abstract: 201,701. Lamb, A. S. Dec. 9, 1922. Roller-blinds, shields for.-A casing or shield for a map mounted upon a spring-roller carried by end brackets 7 secured to a vehicle dashboard, comprises a substantially semicylindrical cowl 14, which s detachably secured by an internal flange 13. The flange engages in a recess cut in the rear face of a bar which connects, the end brackets 7.
Patent GB-760991-A (GB)
Title: Improvements in sensitized photographic emulsions
IPC: G03C1/29
Filed: 1954-05-27
Abstract: 3:31 - Dimethyl - 9 - (2 - methyl - 6:7 - benz - 3 - indolyl) - 4:5:41:51 - dibenzthiacarbocyanine - p - toluenesulphonate is prepared by refluxing 2 : 31 : 8 - trimethyl - 41 : 51 : 67 - dibenz - 3 - indolothiocarbocyanine p - toluenesulphonate with 1 - methyl - 2 - methylmercaptonaphtha [1 : 2] thiazolium p - toluenesulphonate in ethyl alcohol in the presence of triethylamine.  2:31:8 - Trimethyl - 41:51:6:7 - dibenz - 3 - indolo - thiocarbocyanine p - toluenesulphonate is prepared by refluxing 1:2 - dimethylnaphtha - [1 : 2] thiazolium p - toluenesulphonate 2 - methyl - 6 : 7 - benzindole and ethyl orthoacetate in acetic anhydride.  Specifications 394,692, 498,031, 498,289, 498,290, 498,291, 533,425, 581,772, 635,366, [all in Group XX], 754,546, and 756,226 are referred to.
Patent GB-249712-A (GB)
Title: Improvements in the method of and apparatus for use in extinguishing fires
IPC: A62C31/00
Filed: 1925-06-17
Abstract: 249,712. Freygang, W. H. June 17, 1925. Fire - extinguishing by gases.-In the extinguishing of fires by means of a high velocity jet of gas a shield or envelope, which may be of the same gas, is arranged between the jet and the surrounding air to prevent the entrainment of air by the jet. As shown in Fig. 1, the main jet b from a pipe a is surrounded by an envelope of gas issuing from auxiliary jets b<1>. In a modification, the jets b<1> are replaced by an annular slot. For the protection of combustible liquid in a vat e, Fig. 7, a gas supply pipe a' is provided with upper and lower jet orifices b<5>, b<4>, the main jet of gas from the orifices b<4> being protected by a shield of gas issuing from the orifices b<5>. In a modification, the orifices b<5>, b<4> are formed in two separate pipes. In another form of apparatus, Fig. 10, a jet of gas issuing from a single nozzle b<9> is protected by a solid vane or cone f<1>. In another modification for use in vats, a jet of gas issuing from orifices in a supply pipe is protected by upper and lower horizontal vanes, to which, in the event of fire in the vat, combustion products may be passed to further protect the jet. Specification 17341/07 is referred to.
Patent GB-544781-A (GB)
Title: Improvements in or relating to ignition systems for aero-engines
Filed: 1940-10-25
Abstract: 544,781. Ignition systems. WEST, H. E. W. Oct. 25, 1940, No. 15693. [Class 7 (iv)] In a dual-plug ignition system, means is provided for supplying at starting to both sets of plugs a series of sparks having high-frequency characteristics. Two condensers 14, 15 are connected in series across the secondary winding 11 of an induction coil and the mid-point 16 between them is earthed. The high tension side of each condenser is connected through a contact maker or small spark gap 21, 22 to the primary of a separate high-frequency step-up transformer 23,. 24, the other ends of which are earthed at 18 ; the transformer secondaries 25, 26 are each earthed at one end and connected at the other ends to auxiliary high-tension distributors feeding the two sets of plugs. In a modification, the spark-gaps 21, 22 and 'the condensers 14, 15 are inter-changed.
Patent GB-168984-A (GB)
Title: Ratchet coupling
IPC: F16D41/20
Filed: 1920-06-10
Abstract: 168,984. Schurmann, C. June 10, 1920. Clutches, ratchet.-In friction ratchet mechanism for use in power transmission, switchlevers, &c., an expanding-coil clutch 5 is used, provided with means so acting on the ends of the coil as to make all the turns effective for driving, without introducing excessive friction during overrunning &c. In one form, suitable for low powers, such as ratchets, switches, &c., the ends of the coil are made to project slightly to engage frictionally the casing-parts 2, 3, either by flattening the last half-convolutions or by hingeing them to the rest of the coil, which need not be initially larger than the casing. As shown in Fig. 5, each end of the coil may be attached by a pin 10 to one of a pair of shoes 6, 7 adjustably spring-pressed against the casing, or, when axial space is restricted, against the inside of the coil itself. In the form shown in Fig. 7, split - collars 6, 7 are caused to grip the shafts 1, 4, preferably by springs housed around their connecting-bolts 60, 70, and the coil ends are coupled thereto by inclined links 11. which press them against the casing-parts 2, 3 when the driving- shaft turns in the. engaging-direction. Fig. 9 .shows means for coupling a gear-wheel 12 to a. shaft 1. One end 14 of the coil 5 is inserted in a gripping-collar of the type shown in Fig. 7, and the other end 15 is wound tightly round a boss 16 of the wheel 12. In all the forms, one end of the clutch coil may be directly secured to the driving or driven member. Reference has been directed by the Comptroller to Specification 3527/82.
Patent GB-942002-A (GB)
Title: Improvements in chimneys
Inventor: WERNER GORDON FRANCIS
IPC: F23J13/02
Filed: 1959-05-07
Abstract: 942,002. Chimneys. SUPERWELDS (LEWISHAM) Ltd. Feb. 24, 1960 [May 7, 1959], No. 15760/59. Heading F4J. A chimney comprises inner and outer coaxial metal tubes 1, 2, Figs. 1, and 2, of circular rectangular or other cross-section, a corrugated aluminium sheeting 6 being provided in the dead air space 3 and backed by a sheet 7, a highly polished heat reflecting surface of the sheeting 6 facing the tube 1, in order to reduce heat loss in the flue gas passing therethrough. The tubes are connected by studs 4 each having a surrounding asbestos packing 5, and an air gap 8 is provided between the sheet 7 and the tube 2. The sheeting 6 may be secured to the outer tube and not touch the inner tube. Alternatively, the sheeting may be spaced from the inner tube by a spirally wound wire thereon. The outer surface of the tube 1 and/or the inner surface of the tube 2 may also be provided with heat reflecting surfaces. Sections of the chimney are joined together as shown in Fig. 4, wherein the shorter outer tubes are provided at their ends with continuous or spaced flanges 18 and the longer inner tubes provided with continuous flanges 15, the latter being bent at 16 to provide expansion gaps 17. The flanges are all bolted together with the interpositioning of asbestos tapes 19. In another form of joint the outer tubes are longer than the inner tubes and the ends are connected by welds to annular discs, the adjacent discs being thereby inclined to form the expansion gaps, and only the outer tubes are flanged. The flanges may be provided with holes to receive stay wires. In still another form of joint an outer tube has welded thereto a sleeve to receive an adjacent outer tube, and the shorter inner tubes are provided with annular flanges which do not touch the outer tube but engage an asbestos ring, as described with reference to Fig. 5 (not shown).
Patent GB-312185-A (GB)
Title: Improvements in or relating to the mounting of printing cylinders in multi-colour intaglio printing machines
IPC: B41F13/20
Filed: 1929-05-21
Abstract: 312,185. Egli, A. A., (Assignee of Hamburger Fremdenblatt Broschek & Co.). May 19, 1928, [Convention date]. Rotary intaglio machines; impression adjustments. - The printing-cylinders 10 of a multicolour intaglio printing-machine are constructed with three bearings for the shaft of each printing- cylinder, two of which are mounted in the frames a, b of the press in which the impression cylinder is mounted and are adapted to take up radial pressure only while permitting of free axial movement of the cylinder shalt 1, and the third bearing is arranged in a separate frame c, and enables the shalt 1 to be given a preliminary axial adjustment but holds the shaft fixed in the adjusted position. The printing-cylinders 10 are internally ribbed tubular cylinders held to a conical carried 2 on the shaft 1 by fixing devices 5 - - 9. The bearings in the frames a, b, comprise bearing plates 11, 11<1>, pivoted about bolts 12 and adjustable by means of toggles, not shown in Fig. 1. Conical journal boxes 13, 13<1> are mounted in the plates 11, 11', and bearings 14, 14<1> carried thereby are seated on sliding bushes 15 which are displaceable on the shaft 1 but not rotatable thereon. The shaft 1 is driven by a freely mounted gear 16 having an adjustable pin- and-slot connection with a disc 18 keyed to the shaft 1 in such a manner as to permit of the radial movements of the shaft 1 relatively to the impression cylinder. The axial movement of shaft 1 is effected by a hand-wheel 23 on a screwed hub 23<1> which can rotate on the shaft 1 but moves axially therewith. The hub 23<1> engages a threaded bush 25 which is locked by rings 25', 25<11> from axial movement, and by a pin from rotary movement. The bush 25 permits of the radial movement of shaft 1, and is locked in position by a clamp 31 when the cylinder is adjusted to the required position.
Patent GB-645685-A (GB)
Title: Improvements in and relating to sealing-in apparatus for the bulbs of electric lampsand discharge devices
IPC: H01J5/24
Filed: 1945-06-21
Abstract: 645,685. Turret machines for making electric lamps. BRITISH THOMSONHOUSTON CO., Ltd. June 21; 1945, No. 15819. Convention date, June 22, 1944. [Class 39(ii)] An apparatus of the type described in Specification 607,766 for sealing a mount to the envelope of an electric lamp comprises a turret 1 indexed as in Specification 252,395, [Class 39(ii)], with a number of heads corresponding to the number of work stations A-Q. The lamp envelope 10, Fig. 2, is held by clamps 21<SP>1</SP> and 21" such as described in Specification 593,969 firmly in position above the flare of the mount 9 of the type described in Specification 553,184, [Group XL(a)], which rests on the rim 36 of the outer sleeve 18 of the spindle 15. The spindle is rotatable by means of a belt 25 engaging a pulley 24 and has an inner sleeve 19 secured against rotation relative to the' sleeve by a screw pin 54 whose head lies in a vertical slot 57 to allow relative movement of the two sleeves. A pin 45 with frusto-conical head 46 lies within the inner sleeve and rests on a spring 51 which may be compressed by an upward thrust on the lower end of the inner sleeve thus raising the pin 45 to support the mount and prevent sagging during heating, Fig. 5 (not shown). When this supporting action is not required the outer sleeve 18 is maintained at its highest level by a track 38 and the spring is not compressed, Fig. 4 (not shown). The rotary movement is prevented at stations where no heat is applied by a grooved rail 28 into which a roller 26 below the pulley 24 is guided by a stop 33. The lamp and mount are loaded at stations A and B at which the outer sleeve 18 is maintained in the raised position by the track 38, pass through idle station C to preheating station D at which rotation begins and the inner sleeve 19 engages the cam track 71. Thereafter the outer sleeve 18 is allowed to drop and as the lamp passes through the sealing stations E to H the mount flare is supported by the pin head 46. At stations J to M the outer sleeve 18 rides up upsetting cam tracks 73 to 76, to work the softened rim portion of the mount flare into intimate contact with the rim of the envelope. Soft flames are applied at station O to anneal the seal, the lamp is air cooled at station P and unloaded at Q.