baber/WOPTO huggingface dataset:
Patent GB-381520-A (GB)
Title: Improvements in the preparation of alumina
IPC: C01F7/12
Filed: 1932-06-02
Abstract: In the extraction of alkaline-earth aluminates with preferably hot alkali carbonate solutions with subsequent precipitation of alumina, excess alkali carbonate is used and the solution obtained, preferably after separating the residue, is treated with calcium oxide or hydroxide to remove silica.  The quantity of lime added must be in excess of that corresponding to the excess of alkali carbonate present by an amount equal to at least 12 and preferably 25-30 times the amount of the dissolved silicic acid. Also the amount of excess lime must not be less than 6 nor appreciably greater than 17,5 kg. CaO per cubic metre of solution.  If desired the lime may be added prior to extraction either to the alkaline-earth aluminate or to the alkali carbonate solution.  In treating solutions low in silicic acid, precipitation is improved by raising the content of dissolved silica to 0,35 kg. SiO2 per cubic metre, as by addition of sodium silicate.  Alumina may be precipitated from the purified solution by carbonic acid.  Tabulated examples illustrating the working of the process are given.  Specification 232,930, [Class 1 (iii), Oxides &c., Metallic], is referred to.
Patent GB-561243-A (GB)
Title: Improvements in or relating to high-pressure hydraulic pumps
IPC: F04B1/14
Filed: 1942-11-05
Abstract: 561,243. High-pressure pumps. ARMANDIAS, L. S., and ASSOCIATED MESSIER INVESTMENTS, Ltd. Nov. 5, 1942, No. 15638. [Class 102 (i)] - A high-pressure pump comprises an auxiliary gear pump 10, 11, Fig. 1, feeding a closely adjacent intermediate chamber 19 through which the driving shaft 6 passes and from which open the inlet ports 30, Fig. 2, of a number of barrels 18 arranged around the shaft and containing bucket-plungers 25 actuated by a swash-plate 20 on the shaft, said inlet ports being located close to the driven ends of the plungers. The inlet ports 30 are formed in a cylindrical valve 29 with a head 31 and resting on a ring 27 which is held inside the valve by a spring 35, and each outlet port 37 is controlled by a spring-pressed lift valve 38. Excess pressure in the chamber 19 is relieved by means of a byepass passage with a non- return valve leading to the inlet port of the gear pump. The latter may supply the chamber 19 with more liquid than the plungers require, the excess being led to a space 50, Fig. 6, formed around the lower part of the pump by a jacket 49. Cooling of the pump is thus effected and the excess liquid is led off through a non-return valve and a radiator or other cooling device to the feed tank which is preferably arranged at a higher level than the pump.
Patent GB-964373-A (GB)
Title: Improvements in composite faller bars
IPC: D01H5/14
Filed: 1962-04-25
Abstract: 964,373. Making faller bars; soldering. SOC. N. SCHLUMBERGER & CIE. April 25, 1962 [May 19, 1961], No. 15708/62. Headings B3A and B3R. [Also in Division D1] In making a composite faller bar the pins are assembled into a unit by a first solder and the unit is fixed to the faller bar body by a second solder of lower melting-point. The pins 2, Fig. 1, are fixed in a U-section comb bar 1 of sheet metal or wire cloth by solder melting at about 300 C., the solder projecting into holes 4 in the walls of the U-section. The faller bar body 16, Fig. 5, having a groove 17 with tinned walls is held in a heating vice and lead-tin solder melting at 200 C., is placed in the bottom of the groove and the comb-bar, tinned in a bath of the same leadtin solder, is fitted in the groove. The combbar may be removed by melting the lowmelting solder without damaging the comb-bar. The comb-bar may be internally grooved parallel to the pins. The U-section bar may be replaced by a C-shaped member having pinengaging holes in its parallel arms or by a member 11, Fig. 4, whose ends are folded twice to form sides 12, 13, 14, 15, the sides 14, 15 being inset between the pins. The wall 13 may have pin-receiving holes. In a modification the pins may be embedded in a cast bar of solder of the higher melting point and this bar is soldered to the faller-body as before. The finished assemblies may be employed in gilling machines.
Patent GB-1485507-A (GB)
Title: System for detecting the chemical composition of a fluid
IPC: G01N35/00
Filed: 1974-07-31
Abstract: 1485507 Test device having calibration reflector member; automatic analysis OLYMPUS OPTICAL CO Ltd 31 July 1974 [31 July 1973(11) 12 Dec 1973 20 June 1974 (2)] 15727/77 Divided out of 1485506 Heading G1B A chemical reaction testing piece 11 has one or more reagent containing absorptive carriers 11a- 11c positioned thereon and a calibration reflector 11s positioned either on the strip or on a test table 214 on which the strip rests. The test table may be moved towards or away from a measuring device by means of a stepped cam Fig. 18 (not shown). Immersion of the test piece in a test fluid causes colour changes of reagents in carriers 11a-11c. These changes are determined photo-electrically by reflection using reflector initially to establish a standard for the measurement circuit. The number and positions of the carrier defines a digital code by which the reagents present can be identified and from which measurement the absolute values can be determined from a memory linked with the measurement circuit and an output printer circuit. A plurality of the test sheets may be stored in a cassette Fig. 42 (not shown) and dispensed one at a time for use in automatic analysis. An automatic analysis system utilizing the cassette comprises, Fig. 44, rotary turn-table 481 for sample tubes, test sheet cassette 460, rollers 486, 487, 488, 489 for pulling a test sheet away from the cassette to bring it into contact with guide plane 490 which bends the test sheet so that it passes into a sample tube 11, movable block 485 which can be lifted to raise and lower the test sheet and colorimeter head 491 for making the measurements on the test sheet. In the embodiment of Figs. 46 and 47, Fig. 46 (not shown) the sample container Fig. 47, has a flat box-shaped portion which receives the test sheet and the measurements are made with the test sheet in the container. In the embodiment of Fig. 48 (not shown) the samples are each held in an upright syringe-like container having a flexible cap, sample being dripped on to the reagent carriers by depression of the caps with a push pin. In an alternative embodiment Fig. 58 (not shown) urine is dripped on to the reagent carriers as they are automatically conveyed from a pipette mounted on a rotating arm. In the embodiment of Figs. 54 to 56 (not shown) the test sheets are cut in turn from a roll (527) of test sheet material. The test sheets may be sealed between cellulose sheets which are peeled off as the test sheets are dispensed Fig. 62 (not shown).
Patent GB-612455-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F1/00
Filed: 1946-05-24
Abstract: 612,455. Tobacco pipes. LAMB, A. E. May 24, 1946, No. 15735. [Class 130] A detachable mouthpiece 3 carries on a rod 4 discs 5, 6, which fit an enlarged stem bore, and have notches in their upper edges for the passage of the smoke; on withdrawal of the mouthpiece, the stem bore is thus cleaned. The smoke passes to the mouthpiece by a transverse passage 11, and an axial passage 12
Patent GB-398300-A (GB)
Title: Improvements in or connected with joints for pipes, tubes and the like
IPC: F16L21/03
Filed: 1932-06-04
Abstract: 398,300. Pipe joints. ELLIOTT, J. H. and JACK, I. D., 120, Oxford Street, Glasgow. June 4, 1932, No. 15772. [Class 99 (i).] A rubber &c. device for jointing pipes comprises a first tubular part 2 adapted to be inserted in the socket or bore of a first pipe B, and a second, smaller, tubular part 3 adapted to grip a second pipe C, the parts being connected by a resilient portion 4 allowing relative movement between the pipes and the joint being maintained by the outward pressure of the first part on the inside of the first pipe and the grip of the second part on the outside of the second pipe. The first part 2 is of substantial thickness to exert the required pressure on the pipe B and its surface is ribbed to offer less resistance to compression than the body part. A flange 5 is provided on the part 2. As shown, the parts 2, 3 extend in the same direction from the connecting portion but they may extend in opposite directions, the same device being usable either way. Either or both of the parts may be tapered.
Patent GB-884681-A (GB)
Title: Improvements in or relating to magnetic recording apparatus
IPC: G11B5/00
Filed: 1959-05-08
Abstract: 884,681. Magnetic data-storage apparatus. LITTLE Inc., ARTHUR D. May 8, 1959 [May 22, 1958], No. 15864/59. Class 106 (1).  Digital data is stored magnetically on a cylindrical surface in zones which are traversed by a transducer moving parallel to the axis; in Fig. 1 the storage is in ring-shaped bit zones on the surface of passages 11 in a removable storage unit 1. Writing and reading is by a probe 5 brought into position opposite a selected passage by servomotors X, Y and moved along its axis by motor Z; as shown it has 3 transducers 51 for erasing writing and reading. Fig. 2 shows a probe with a single transducer, an annular winding 60 setting up the ring-shaped field H. The probe is shaped at 62 for guiding it into passage 11 and it may be made flexible to assist in this. A punched card 9 may be used to control address selection by moving it in front of unit 1, a slippable clutch then being provided in the drive from motor Z. The passages 11 may extend right through the unit 1 to enable scanning by probes from each side simultaneously. Fig. 4 (not shown) illustrates a modification in which storage is on the surface of rods extending from a base member and the probe is tubular in form. Figs. 9-11 (not shown) illustrate another modification in which the passages 11 are polygonal in cross-section and a correspondingly shaped probe has a plurality of transducers each associated with a single face of the passage 11 so that a number of data tracks may be used in each passage.
Patent GB-215617-A (GB)
Title: Improvements in and relating to protective devices for vacuum tubes and the like
IPC: H01R33/945
Filed: 1923-06-19
Abstract: 215,617. Cohen, M. B. June 19, 1923. Vacuum tubes.-A protecting device for a thermionic valve is adapted to be interposed between the bulb terminal and the corresponding socket contact so as to disrupt the circuit under excessive current. A fusible device is shaped to fit over a projecting bulb terminal and provided with two contacts one fitting the terminal and the other adapted to engage the appropriate contact in the bulb socket, a fusible protecting element connect-- ing the two contacts. Fig. 2 shows one construetion in section, a sleeve contact 14 fitting the bulb terminal 7 and lying within an insulating member 15, preferably closed a.t one end. A capshaped contact 17 is carried by the insulating member so as to engage a plate contact 12 in the socket holder for the bulb. A fuse wire 18 is connected between the contacts 14, 17 and may be covered by a glass or other sleeve 22. In a modification, Fig. 7, both contacts 23, 24 are flanged tubular members separated by insulating material 25 and the flanges are cut and arranged as to accommodate a connecting fuse wire 28, as shown.
Patent GB-296149-A (GB)
Title: An improved splash guard for vehicle wheels
IPC: B62D25/18
Filed: 1927-06-15
Abstract: 296,149. McMaster, A. June 15, 1927. Lateral - splash guards. - A splash guard for a vehicle wheel is kept in its " in use " position at the side of the wheel by air pressure. The splash guard 1, Fig. 1, in the form of a wheel, is mounted on a rod 3, pivoted at 5 in a bracket attached to the running board, and is balanced by a spring or weight 7. An upstanding arm 8 is connected to the bar 3 and is acted upon by air pressure to force the wheel 1 into contact with the ground when the vehicle is travelling. A stop 10 limits the upward movement of the wheel 1. In Fig. 3, the guard is in the form of a trough-shaped member 11 which communicates with a funnel 12, the air, when the vehicle is travelling, entering by the funnel and tilting the guard as shown in full lines. The air which enters the funnel is projected by the trough 11 on to the track of the vehicle wheel.
Patent GB-788751-A (GB)
Title: Improvements in heat exchange systems
Inventor: LAWRENCE ARTHUR CHARLES
IPC: F28G9/00
Filed: 1955-06-03
Abstract: 788,751. Cleaning heat-exchange systems. FOSTER WHEELER, Ltd. March 13, 1956 [June 3, 1955], No. 15981/55. Class 99(2). In a system in which a liquid metal is circulated as a heat-exchange medium the liquid metal circuit incorporates a permanent valve housing 10 the valve spindle opening of which is closed by a metal plug 18 during normal operation of the system. When the system is to be cleaned the plug is removed and replaced by a valve. As shown, the plug which is located on a shoulder 30 of the housing and welded at 26 to the latter, is held down by a nut 14 provided with an aperture 16 for a valve-packing gland.
Patent GB-1521373-A (GB)
Title: Equipment for checking dc power supply unit
IPC: G01R31/40
Filed: 1976-04-20
Abstract: 1521373 Testing D.C. power supply units COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE CII-HONEYWELL BULL 20 April 1976 [30 April 1975] 16006/76 Heading G1U In a computer controlled system for testing an A.C. energized D.C. power supply unit, means are provided (1) for selecting the voltage and frequency of the A.C. that is supplied to the D.C. power supply unit under test (DUT), (2) for loading the DUT in such a way that it provides a selectable current, and (3) for measuring and indicating various currents and voltage present in the system. As described A.C. of 50c/s, 60c/s and 400c/s is available, and the voltage of the selected supply can be set using an autotransformer forming part of a rectroactive loop. The current drawn from the DUT can follow a large variety of selectable waveforms, e.g. Figs. 4a and 4c, and can be of either polarity. The current is made to follow the required form by comparing the voltage across a resistor in series with the current with a reference waveform and adjusting the base voltage of a bank of parallel-connected transistors to constitute the load. Detailed circuits are not given, since the system is said to employ conventional circuit blocks.
Patent GB-950513-A (GB)
Title: Improvements in processes for nitrosating cyclohexylic compounds
Filed: 1961-05-04
Abstract: Caprolactam is prepared by nitrosation of hexahydrobenzoic acid, a functional derivative thereof, or cyclohexylketones of the formula: <FORM:0950513/C2/1> where Y is a hydrocarbon radical, by treating with an agent capable of forming NO+ ions in the reaction medium, in the presence of fuming sulphuric acid, by mixing the reagents at below 35 DEG C. and then heating in a thin layer to produce the caprolactam.  Nitrous anhydride, or nitrosyl sulphate may be used as nitrosating agents at a temperature between 75 DEG  and 140 DEG C. The process may be batchwise or continuous with recycling and examples describe the nitrosation of hexahydrobenzoic acid and ketones in an apparatus in which the heat of formation of the mixture is removed in a cooler at -18 DEG C., and the reaction takes place in a two-sectional bubble cooler heated to 100 DEG C. The product is cooled, a portion recycled and periodically a portion separated, the hexahydrobenzoic acid present hydrolysed, and the caprolactam extracted with chloroform. <PICT:0950513/C2/1>
Patent GB-1092195-A (GB)
Title: Copoly-ª-amides and process for their manufacture
IPC: C08G69/22
Filed: 1965-04-15
Abstract: Copoly-b -amides are prepared by the polymerization of at least two of the compounds 3,4-dimethyl - azetidin - 2 - one 4 - monomethyl-azetidin-2-one and 4-monoethyl-azetidin-2-one. The copolymers are prepared preferably by anionic condensation in the presence of a solvent e.g. dimethyl sulphoxide and may be spun to form fibres.
Patent GB-1332541-A (GB)
Title: Polytetrafluoroethylene coatings and films
IPC: C08J5/18
Filed: 1971-05-21
Abstract: 1332541 Polytetrafluoroethylene coatings and films PENNWALT CORP 21 May 1971 25 May 1970] 16329/71 Heading C3P Sintered polytetrafluoroethylene films and coatings are prepared by applying to a support an aqueous polytetrafluoroethylene latex containing a surface active agent, evaporating the aqueous carrier medium to deposit on the support a layer of polytetrafluoroethylene and sintering the deposited layer in the presence of oxygen, there being added to the latex prior to deposition of the polymer layer from five to three hundred parts by weight per million parts of latex of a water-soluble salt selected from water-soluble alkali or alkaline earth metal salts, lead acetate and zinc chloride. In the examples polytetrafluoroethylene latices containing ammonium hydroxide, an octylphenoxy polyethoxy ethanol, LiNO 3 , Ba(NO 3 ) 2 , NaCl, KCl, CaCl 2 , NaF, KF, Ca(CH 3 COO) 2 , ZnCl 2 , BaCl 2 , CH 3 COONa, Pb(CH 3 COO) 2  and LiCl were applied to glass discs or aluminium foil, evaporated and sintered in an air oven.
Patent GB-1174782-A (GB)
Title: Improvements relating to Travellers for Textile Ring Spinning, Twisting or Doubling Machines
Inventor: RILEY JACK HOPKINSON
IPC: D01H7/60
Filed: 1966-04-14
Abstract: 1,174,782. Travellers for ring-spinning. TEXTILE MOULDINGS Ltd. 4 April, 1967 [14 April, 1966], No. 16383/66. Heading D1D. A traveller for ring-spinning comprises two hook ends connected by a shank and made in two parts: one part forms one hook end and the shank or a. portion of the shank and is made of plastics material, and the other forms the other hook end to be engaged by the yarn, or the said other hook end and the other part of the shank and is made entirely of wear-resisting non-plastics material. In Fig. 1, the traveller comprises a lower hook and shank of nylon to embrace the ring, the shank being moulded around an extension of the thread-engaging upper hook 13 which is of wire of circular and constant or tapering crosssection, the extension having a reduced intermediate portion to make a key for the nylon. The wire may be of hardened steel. In Fig. 4, the upper hook is elongated, and the key is formed by flattening the intermediate portion of the extension. The hook shape of the wire portion enables it to be held while the plastics part is moulded. The non-plastics part may be cast, sintered, or be of ceramic material.
Patent GB-510918-A (GB)
Title: Automatic door check with tension contrivance and mechanical brake
IPC: E05F3/16
Filed: 1938-06-01
Abstract: 510,918. Door-operating appliances. BAUBESCHLAGFABRIK GES. June 1, 1938, No. 16399. Convention date, July 10, 1937. [Class 65 (i)] A door-operating appliance comprises a casing 1 enclosing a spring 9 held at one end in a slot in the casing and at the other end in a slot in a boss on the ratchet 8 engaged by a pawl 15 on the door-operated lever 14. The lever 14 engages the square end 13 of a spindle 12 which by means of pin and slot 23, 22 engages a brake cone 21 inside a brake drum 24. The cone is pressed up by an adjustable spring 17 and washer 20. During the opening of the door the spring 9 is tensioned by rotation of the wheel 8, and the drum now moves with the cone so that no braking occurs. During the closing of the door, number of stirrups 26, which are held at their upper ends between pairs of springs 29 in an adjustable plate 28 and at their lower ends in fixed bearings 27, which permit slight tilting of the stirrups, are tilted so that their vertical edges grip the drum 24 and prevent it from moving with the cone 21, thus checking the closing movement of the door.
Patent GB-1479264-A (GB)
Title: 3-(5-aryl-2-furyl)-3-hydroxypropionic acids and ethyl esters thereof
IPC: A61K31/34
Filed: 1976-04-22
Abstract: 1479264 3 - (5 - Phenyl - 2 - furyl) - 3- hydroxypropionic acid and derivatives thereof MORTON-NORWICH PRODUCTS Inc 22 April 1976 [20 Aug 1975] 16421/76 Headings C2C and C2J [Also in Division C3] Novel compounds of the Formula I wherein X is hydrogen, 4-chloro, bromo or fluoro, 3-chloro, or 3,4-dichloro and R is hydrogen or ethyl may be prepared by reacting a compound II with a compound ZCH 2 COOEt where Z is BrZn or Li and optionally hydrolysing the ethyl ester formed to the free acid. Lithio ethylacetate is prepared by reacting ethyl acetate with lithium bis(trimethylsilyl)amide or lithium N-isopropylcyclohexylamide. The latter compound is prepared by reacting n-butyllithium with N-isopropylcyclohexylamine. The compounds I show pharmaceutical activity as anti-inflammatory agents.
Patent GB-582973-A (GB)
Title: A new or improved device for protecting the valve stem of a pneumatic tyre
IPC: B60C29/00
Filed: 1945-06-28
Abstract: 582,973. Tyre valves. DUNLOP RUBBER CO., Ltd., and DAW, R. F. June 28, 1945, No. 16461. [Class 135] An angled tyre-valve stem 7 adapted to seat in a groove 15 in the rim-base, over which a tyre-retaining flange 4 is detachably secured, is protected against damage by the-flange by means of a cradle 1, preferably of con-corrosive metal, formed with an end-portion 5 which is shaped and apertured to fit over the angle of the valve-stem, its body portion having a groove 2 to seat the adjacent axial portion of the,stem. The end portion 5 has a shoulder 10 to protect the valve-stem against direct abutment with the inner edge of the flange 4 if, in assembly of the latter, the valve-stem should be forced up to the end 11 of the groove 15. To prevent displacement of the cradle 1, it is fitted with a spring-clip 12, the end 14 of which is adapted to snap under the valve-stem.
Patent GB-1036505-A (GB)
Title: Blind rivet assembly
IPC: B21J15/04
Filed: 1965-04-20
Abstract: 1,036,505. Blind riveting. OLYMPIC SCREW & RIVET CORPORATION. April 20, 1965 [April 20, 1964], No. 16483/65. Heading B3U. [Also in Division F2] In a blind rivet assembly comprising a tubular rivet having a sleeve 11 provided with a head 12 and a pin comprising a head 16, a body 15 and pulling stem 14, the pin is advanced so that a shoulder 21 on the body 15 is brought into engagement with a mating shoulder 19 within the sleeve to expand a portion 25 of the sleeve, the said portion being then radially compressed as by crimping or rolling.
Patent GB-1435468-A (GB)
Title: Ring clamps
IPC: F16L37/00
Filed: 1974-04-16
Abstract: 1435468 Clamps ITW FASTEX ITALIA SpA 16 April 1974 [19 April 1973] 16497/74 Heading E2B A ring clamp 10 of plastics material has an elongate strip shaped body 11 provided with complementary fastener parts 37, 45 at its opposite ends, the body comprising a plurality of portions 13, 15, 17, 19 which are D- shaped in cross-section and are connected by solid portions 14, 16, 18, 20 and the straight stems 22 of which provide successive portions of the clamping face of the body. Flanges 24 project from the convex surface of each D-shaped portion, which flanges lie in the same plane and are parallel to the length of the body, and there is a tongue 26 projecting outwardly from each of the solid portions 14 .. 20 and sloping in a direction towards the flanges. As shown, the fastener parts comprise an arrow-shaped finger defining shoulders 46, 47 the shoulder 47 being engageable with the hooked portion 42 of the finger 39. In use, the clamp secures a fuel filler pipe having a vent tube which is passed through the aperture 28 in a tab 27, the tongues 26 being forced through an aperture in a panel to locate and retain the pipe.