baber/WOPTO huggingface dataset:
Patent GB-977063-A (GB)
Title: Improvements in or relating to apparatus for producing cast-surface mineral-coated paper
IPC: B05C1/08
Filed: 1961-08-17
Abstract: 977,063. Apparatus for coating webs. MEAD CORPORATION. Aug. 17, 1961 [Aug. 19, 1960], No. 29718/61. Heading D1L. The apparatus described in Specification 838,180, for coating paper, is modified by including two metering rolls (32 and 33) arranged side by side and rotating in opposite directions, an applicator roll (31) in contact with and rotating in the same direction as one of the metering rolls, means for moving a paper web (11) in a direction opposite from the direction of rotation of the applicator roll. This arrangement allows the amount of coating supplied to the web to be accurately controlled. Preferably, the metering rolls have resilient surfaces, e.g. of rubber, and the applicator roll has a hard abrasion-resistant surface, e.g. of brass or chromium. A smooting device 35 such as a flexible distributer or a spread shaft may be fitted to contact lightly the surface of roll 31 and smooth the coating.
Patent GB-261912-A (GB)
Title: Improvements in and relating to darning and like needles
IPC: D04B17/04
Filed: 1925-11-25
Abstract: 261,912. Stephens, F. C. Nov. 25, 1025. Darning.- A device for repairing " ladders " in knitted materials consists of a hookneedle having a lateral guard finger 6 and a magnetised latch 4. In using the implement the hook 1 is inserted in the last loop a of the ladder and beneath the next thread b. As the hook is moved forward the loop a slides back over the latch, being constrained by the guard 6 to lie close to the shank. On the forward movement the loop, still constrained by the guard, engages behind the latch and forces it forward so that it grasps the thread b and forces it into the hook. The thread b is then withdrawn through the loop a to form a new loop. The latch 4 is magnetized to cause it normally to stand open and is slightly unsymmetrical as shown in Fig. 8, this being to allow the loop on the shank to force the latch to one side and slip back into the hook in the event of two threads being grasped by the latch, thus jamming the hook and preventing faulty work.
Patent GB-1156777-A (GB)
Title: Manufacture of Semiconductor Elements.
Inventor: COLLIER GODFREY EMANUEL
IPC: H01L21/00
Filed: 1967-06-28
Abstract: 1,156,777. Subdividing semi-conductor wafers. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. 29 May, 1968 [28 June, 1967], No. 29891/67. Heading H1K. A semi-conductor wafer 1 is provided with a pn-junction 2 parallel to its major faces, e.g. by diffusion, criss-cross grooves 5, 6 are formed in one major face 3 to a depth greater than that of the junction 2, and the wafer is then separated into discrete elements by breaking along the lines of the grooves 5, 6. The grooves 5, 6 may be formed by an oscillating cutter fed with abrasive material. After grooving the wafer is cleaned by etching and the exposed edges of the junction 2 are protected. The ungrooved face is then scored with a diamond cutter opposite the lines of the grooves 5, 6 and the wafer is broken.
Patent GB-1491179-A (GB)
Title: Cigarette holder having a filtering action or a cigarette filter
IPC: A24D3/04
Filed: 1976-07-19
Abstract: 1491179 Cigarette holder; cigarette filter J PONSY 19 July 1976 [25 July 1975 8 Jan 1976] 29909/76 Headings A2C and A2M A cigarette holder or cigarette filter is provided with a flexible membrane which blocks the smoke passage when not in use but which may be opened by the vacuum created in the passage when the user draws in smoke. As shown the membrane 4 may be located in a cigarette holder so that its free edge is normally in contact with the interior of the walls and adjacent the seat 3 in which the cigarette is located.
Patent GB-225377-A (GB)
Title: Improvements relating to the heating of horizontal retorts for gas production
IPC: F23D99/00
Filed: 1923-11-28
Abstract: 225,377. Toogood, H. J., and Dempster & Sons, Ltd., R. Nov. 28, 1923. Regenerators.-In a retort furnace, the regenerator comprises secondary air tubes 1 and waste heat tubes 2 arranged in vertical tiers or planes and in contact, the air tubes 1 being arranged vertically and the waste heat tubes 2 horizontally, all the joints of one tier being staggered in relation to the joints of the other tier. The admission of air to the tubes 1 is controlled by valves arranged in the openings 1<A>, 1<B>. The waste heat tubes 2 are arranged in two or more banks, the passage of the gases through the upper bank being controlled by dampers 2<J> and through the lower bank by a damper 2<M>. The waste gases from the retort chamber pass through vertical tubes 2<x> to the lower bank of tubes. The course of the waste gases through the horizontal tubes is defined by the arrangement of the openings in the walls of the tubes. Specification 209,458 is referred to.
Patent GB-1333840-A (GB)
Title: Optical scanning assembly
IPC: G02B26/10
Filed: 1971-06-28
Abstract: 1333840 Copying by scanning COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 28 June 1971 [26 June 1970] 30100/71 Heading H4F [Also in Division G2] A document 11 is scanned by light from a laser 5 by using a helical mirror 3 mounted on a rotating drum 1 the document 11 being moved to provide the frame scan. The mirror 3 has a concave surface to focus the light from laser 5. In the facsimile transmitter shown the light reflected from the document 11 is again reflected by mirror 3 and then by prism 7 to a photosensitive element 16. In a facsimile receiver the output from laser 5 is modulated by a Kerr cell or Pockels cell. A cylindrical lens may be used to focus the light on to the document. The transmitter and receiver may use opposite sides of the same mirror 3, and part of the mirror may be formed as a left handed helix and part as a right handed helix. More than one drum 1 may be used with one light source and beam splitters to reproduce more than one copy of an original, or pick up the reflected light from more than one document.
Patent GB-805651-A (GB)
Title: Improvements in or relating to the manufacture of ester nitriles
Inventor: DUXBURY FREDERICK KEITH
Filed: 1956-10-03
Abstract: The invention comprises a process for the manufacture of ester-nitriles by heating a half ester of a dicarboxylic acid containing at least three carbon atoms, with ammonia in the presence of a dehydrating catalyst in the vapour phase.  Suitable dibasic acid half esters are those of adipic, pimelic, suberic, azelaic, sebacic, phthalic, isophthalic, terephthalic and p-carboxy phenyl acetic acids.  The half esters may be primary or preferably secondary alkyl, e.g. ethyl, isopropyl, sec.-butyl or sec-aryl half esters.  Suitable catalysts are silica gel, phosphoric acid and derivatives thereof, e.g. boron phosphate. The proportion of ammonia to be used may be from 3-10 mol. of ammonia for each mol. of half ester.  The reaction may be carried out at 275-400 DEG  C., preferably by mixing the vapours of the half ester and ammonia and passing the mixture through a tubular vessel containing the catalyst at the selected temperature, at substantially atmospheric pressure.  Sub- or super-atmospheric pressures may also be used.  A contact time of 1-20 seconds is usually sufficient for the reaction.  The reaction products may be isolated by the usual methods.  Dinitriles are also formed as by-products.  Examples are given of the preparation of iso-propyl-omega-cyano valerate, and adiponitrile from iso-propyl hydrogen adipate; iso-propyl omega-cyano caproate and pimelonitrile from iso-propyl hydrogen pimelate; n-propyl-omega cyano valerate and adiponitrile from n-propyl hydrogen adipate; sec.-butyl omega cyano valerate from sec.-butyl hydrogen adipate; n-butyl omega cyano valerate and adiponitrile from n-butyl hydrogen adipate; iso-butyl omega cyano valerate from iso.-butyl hydrogen adipate, and ethyl omega cyano valerate and adiponitrile from ethyl hydrogen adipate. Specification 568,941, [Group IV], is referred to.
Patent GB-533696-A (GB)
Title: Improvements in or relating to electrically driven pumping apparatus for liquids
IPC: F04D13/08
Filed: 1939-11-15
Abstract: 533,696. Centrifugal pumps. PARTRIDGE, WILSON & CO., Ltd., and WILSON, H. G, A. R. Nov. 15, 1939, No. 30140. [Class 110 (i)] An electrically-driven apparatus for pumping liquids in which a switch for controlling the current to an electric motor which drives the pump 19 is actuated by a float 33 influenced by the liquid, the electric motor 11 and the switch 29 are enclosed within a liquid-tight chamber 3 and the switch is actuated automatically by the float from outside the chamber. In the form shown, a closure disc 5 is secured by a watertight joint 10 in a cast casing 1 to provide a float housing 2 below a bell-shaped chamber 3, the housing 2 having one or an opposite pair of grating-covered openings 6 terminating below its top so as to provide an air-trap. The spindle 13 of an induction motor 11 is directly connected by a flexible coupling 23 to the spindle 21 of a centrifugal pump 19 the inlet 24 of which is covered by a filter 25. The float arm 34 is pivotally connected by a rod 37 to the tumblerswitch lever 32, the rod 37 passing through a rubber or other waterproof diaphragm, sleeve, or bellows 39 which forms an air-tight connection between the chamber 3 and the air trap. The casing 1 is fitted with a carrying ring 42, and it may be completely submerged in the liquid to be pumped, the chamber 3 being provided with one or more apertures closed by air-tight covers.
Patent GB-974626-A (GB)
Title: Production of elastomers
Inventor: DICKINSON LIONEL ARTHUR
IPC: C08G18/48
Filed: 1961-08-21
Abstract: A process for the production of an elastomer comprises reacting together an organic diisocyanate and an alkylene oxide adduct of a triol, a tetral, a primary amino-alcohol or a diamine, the ratio of the number of carbon atoms to the number of oxygen atoms in the alkylene oxide being not more than 4:1 thereby to obtain a reaction product containing free isocyanate groups, and reacting that product with a polyalkylene ether glycol.  "Polyalkylene ether glycol" is used to denote polymers of alkylene oxides and random or block copolymers of alkylene oxides. The polyalkylene ether glycol may have a molecular weight of from 200 to 3,500, preferably 1,500 to 3,000. The adducts have an upper molecular weight limit of about 3,000 when prepared from propylene oxide and about 10,000 when prepared from ethylene oxide.  Hexamethylene and tolylene-2, 4 and 2, 6 diisocyanates are specified reactants. Diisocyanate in amount up to about 10% excess of that required for reaction with the polyalkylene ether glycol and the adduct may be used. Suitably 1 to 8 mols of the glycol per mol of adduct is used.  Suitable catalysts are N-methyl-morpholine, ethyl-diethanolamine and magnesium oxide for the first stage and ferric acetylacetonate for the second. The products can be obtained as cellular foam by reacting the product of the first stage reaction with the polyalkylene glycol and additional diisocyanate in the presence of a small amount of water. In examples (1) a polyoxypropylene oxide derivative M.W. 1,500 of 1,2,6-hexane triol is reacted at 60 DEG C. with 5.775 mols of 2,4-toluene diisocyanate. The cooled product is mixed with 4 mols of polypropylene glycol (M.W. 1900) and ferric acetylacetonate catalyst. The mixture is degassed, cast and cured at 70 DEG  to 150 DEG C.; (2) 5 mols of polyalkylene ether glycol (M.W. 2600) and (3) 4 mols of a 25/75 copolymer of ethylene and propylene oxides (M.W. 2200) are used in the second stage of similar processes. The products can be used as binders for explosives and propellants.
Patent GB-602941-A (GB)
Title: Improvements in and relating to pneumatically operated reversing switches
IPC: H01H35/34
Filed: 1945-11-12
Abstract: 602,941. Pneumatically-actuated switches. ENGLISH ELECTRIC CO., Ltd., and MARDIS, P. L. Nov. 12, 1945, No. 30196. [Class 38 (v)] A rockable camshaft 1 operating reversing switches in a housing 2 is actuated alternately by diaphragms 20, 22 through plungers 13, 14 bearing on a roller 15 on a lever 6, which moves about pivot 7 between limit stops 11, 12 and engages a pin 4 on a handle 3 secured to the camshaft 1. The diaphragms are supplied with compressed air through ports 28, 30, under control of electromagnetic valves 26, 27. The camshaft may alternatively be spring- biassed to a central neutral position or to one end position if only one diaphragm is employed.
Patent GB-481919-A (GB)
Title: Combined file and pipe reamer
IPC: B23D79/00
Filed: 1936-11-06
Abstract: 481,919. Reamers. BURROUGH, G. C. Nov. 6, 1936, No. 30214. [Class 83 (iii)] A flat double-sided file 1 has tapered cutting-edges 2 formed on the end thereof for removing the burr from the inside edge of pipes.
Patent GB-342748-A (GB)
Title: Improvements in or relating to lamps for heating
IPC: F23D11/44
Filed: 1929-10-05
Abstract: 342,748. Burners &c. SHELL-MEX, Ltd., St. Helens Court, Gt. St. Helens, London, and RICHARDSON, A. W., 58, Cambridge Road, Teddington, Middlesex. Oct. 5, 1929, No. 30249. [Class 75 (i).] Annular wick and absorbent pad burners liquid fuel supply; flame protectors.-A heating burner responsive quickly to thermostatic control comprises a ring-shaped member 1 formed with an annular groove 2 which contains a short asbestos wick or pad 3 and is fed with liquid fuel from a chamber 6. The pipe 7 leading from the chamber 6 divides into two branches 5, one fitted with a pilot tap 20 which is set so as to allow sufficient fuel to pass to keep the wick alight and the other fitted with a valve 13 operated against the resistance of a spring 15 by a thermostatically actuated member 13<1>. The two branches 5 unite at a pipe 4 formed with heat-radiating fins 8 and having branches 4<1>, 4<2>, 4<3> leading to the groove 2. An adjusting screw 17 limits the movement of the valve 13. The ring member 1 is surmounted by two perforated coaxial tubes 9, 10 the outer of which carries a shield 12. The fuel level in the chamber 6 is maintained constant by means such as described in Specification 328,958, [Class 75 (i), Burners &c.]. In a modification the branch 5 fitted with the pilot tap 20 leads directly to the groove 2.
Patent GB-822999-A (GB)
Title: Catalytic cracking of methyl isopropenyl ketone dimer to methyl isopropenyl ketone
Inventor: LOWES FRED JOHN
IPC: C07C45/67
Filed: 1957-09-26
Abstract: Methyl isopropenyl ketone dimer is converted into its monomer by heating the dimer at a temperature between 196 DEG  and 600 DEG  C. in the presence of a catalytic amount of a catalyst capable of catalysing the cracking or dehydrogenation of hydrocarbons at an elevated temperature, and recovering methyl isopropenyl ketone monomer from the catalysate.  Suitably, the dimer and a cracking catalyst are maintained at about the B.P. of the dimer and the resulting monomer distilled off through a column.  Alternatively, the dimer may be passed in vapour phase over a heated dehydrogenating catalyst and the products worked up to recover the monomer. Unchanged dimer may be recycled.  Specified cracking catalysts are platinum group metals, activated Al2O3 and activated N : and specified dehydrogenating catalysts are activated Al2O3, a Ni-Ca-PO4, MoO3 on Al2O3 and ferric oxide containing catalysts.
Patent GB-484585-A (GB)
Title: Improvements in and relating to the escapement actuating mechanism of typographical composing machines
IPC: B41B11/18
Filed: 1936-11-06
Abstract: 484,585. Type-bar-making machines. LINOTYPE & MACHINERY, Ltd., and HAYWARD, A. S. Nov. 6, 1936, No. 30282. [Class 100 (iii)] Escapements.-In machines having a shiftable column of magazines, the escapementactuating rods are moved out of position prior to the adjustment of the magazines, in order to prevent their being fouled by the escapements, and are subsequently returned to operative position, by the action of rigid co-operating members. In the arrangement described, the selected magazine is located in operative position by a hand-operated lever e, mounted on a pivot o and having a slot f to engage a stud d on the magazine frame. The escapement striker-rods g are slidably mounted in a frame h pivoted on pins i. An arm l on the locating-lever e has a slot m, which, as the lever is moved into inoperative position, engages a stud n on the frame h and moves the frame forward, so that the rods g are clear of the escapements. The rods are restored to operative position by the locating movement of the lever.
Patent GB-287809-A (GB)
Title: Improvements in apparatus for folding handkerchiefs and other woven cloths
IPC: B65H45/101
Filed: 1927-11-11
Abstract: 287,809. Ehrig, H., and Keilhauer, U. Nov. 11, 1927. Folding napkins, &c. -In an apparatus for folding handkerchiefs, &c. comprising several pairs of folding rollers and creasing knives which feed the work to the rollers, a curved and inclined plate g, g<1> down which the work slides and in which there is a slot above a pair of folding rollers, is placed between successive pairs of folding rollers. Each slo, is normally closed by a flap i coupled by links, &c. f, t to the knife r.
Patent GB-947097-A (GB)
Title: Improvements relating to nuts
Inventor: TILDESLEY JOHN MATTHEW
IPC: B21K1/70
Filed: 1961-08-23
Abstract: 947,097. Anchor-nuts. PRECISION SCREW & MANUFACTURING CO. Ltd. Aug. 3, 1962 [Aug. 23, 1961], No. 30350/61. Heading F2H. A nut adapted to be fixed in sheet metal by a press operation &c. comprises a tubular internally threaded body provided with an hexagonal or other polygonal flange 10 for seating around the periphery of a hole and with a spigot for insertion in the hole, the spigot having a reduced diameter neck 13 adjacent the flange so that by pressing the flange into the sheet relative rotation is prevented and metal is caused to flow into the neck. As shown the lower surface 16 of the flange 10 is flat. In a modification the surface 16 is conical and has a marginal peripheral tooth. The spigot comprises a second flange 14 which is cylindrical but has an adjacent conical face 17. In another modification the spigot is frusto-conical its smaller end being adjacent the flange 10. The spigot may be knurled.
Patent GB-470093-A (GB)
Title: Electrical discharge tube
IPC: H01J17/56
Filed: 1935-11-02
Abstract: 470,093. Thermionic valves. EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG. Nov. 2, 1935, No. 30377. Void. Convention date, Nov. 2, 1934. [Class 39 (i)] In a gas and/or vapour filled discharge tube the grid 3 completely surrounds the cathode and the anode 2 is outside of the grid ; the upper end of the grid is closed by perforated plates 3a, 3b, the grid openings therein being less than 10 per cent of the entire grid surface. The diameter of the grid is less than twice the external diameter of the cathode ; at least the interior of the grid is polished for heat conservation. The lower end of the grid is closed by a solid or gauze annulus 22 which carries a mica annular plate 23 supporting the cathode. The support wires 26, 27 for the grid are broken, glass beads 33 being interposed in the breaks. The distance from the grid to the wall of the envelope 1 exceeds 5 mm. The indirectly heated cathode comprises a central insulating core 6, which carries the heater wires 7, 8 and on which is mounted the cathode body consisting of concentric cylinders 4c, 5 connected by webs, the cylinders and webs supporting emissive material; heat-insulating shields 4a, 4b, are carried by the cathode.
Patent GB-968318-A (GB)
Title: Improvements relating to incandescent lamps
IPC: H01K1/46
Filed: 1963-07-31
Abstract: <PICT:0968318/C1/1> An incandescent electric lamp, especially of the sealed beam type, has a pair of lead-in conductors extending through two adjacent openings in the wall of the lamp envelope and secured to conducting thimbles which serve to seal the openings, at least one of the conductors having a fusible section adjacent the outer end, a hollow sleeve of insulating material, e.g. glass, surrounding the outer portion of the lead-in conductor including the fusible section and having one end anchored in the associated thimble.  In the form shown, the fusible section 20 is butt-welded between parts 13a, 13b of the lead-in conductor, the whole being surrounded by a glass tube 21.  The part 13a and tube 21 are secured in the thimble 7 by a fusible pellet of sintered brass solder and borate glass flux which is placed in the thimble and heat applied thereto.
Patent GB-1386845-A (GB)
Title: Apparatus for cutting the edges of sheet glass
IPC: C03B33/027
Filed: 1972-06-29
Abstract: 1386845 Cutting glass sheets NIPPON SHEET GLASS CO Ltd 29 June 1972 [6 July 1971] 30528/72 Heading ClM An apparatus for cutting the edges of a glass sheet comprises at least two scoring devices 3 to provide a longitudinal score line adjacent each edge, two parallel frames 11, 11<SP>1</SP> mounted downstream of the scoring devices, each frame carrying at least one break means 16, 16<SP>1</SP> for breaking open one of the score lines and each frame further including a roller conveyer 13, 14; 13<SP>1</SP>, 14<SP>1</SP>. The two scoring devices are mounted on a common rail 6 and each include a cutter blade 8, a piston and cylinder device 9 for impelling the blade into the glass and a servomotor 10 for adjusting the position of the scoring device 3 along the rail and thereby the position of the score line. The break means 16 each include an upper and lower push roll 19, 20 each attached to the rod of an air cylinder 17, 18. To adjust the position of the break means to correspond to the position of the score line, the frames 11, 11<SP>1</SP> are moved towards or away from each other by a series of frame moving means 21. Each such means includes a wheel stand 22 on which is mounted wheels 23 that run on a rail 25 and a servomotor 26. The servomotor acts through a rack and pinion device (Fig. 4, not shown) to move the wheel stand along the rail.
Patent GB-171698-A (GB)
Title: Improvements in turbine driven locomotives
IPC: B61C1/02
Filed: 1921-11-17
Abstract: 171,698. Aktiebolaget Ljungstr÷ms Angturbin. Nov. 22, 1920, [Convention date]. Railway locomotives, steam.-A locomotive comprises a boiler vehicle 1 fitted with a turbine 3 which drives the coupled wheels 11 through reduction gearing, and the exhaust from which is led to a second turbine 4 mounted on a trailer vehicle 2 carrying a condenser. The turbine 4 exhausts into the condenser and is connected :o the turbine 3 by a flexible pipe 5. In a modification, each vehicle is fitted with two turbines arranged either in series or in parallel. The turbines may be arranged on bogies.
Patent GB-1067724-A (GB)
Title: Improvements in or relating to devices for laterally displacing crop lying on the ground
IPC: A01D78/00
Filed: 1964-08-04
Abstract: 1,067,724. Haymaking machines. C. VAN DER LELY N.V. Aug. 4, 1964 [July 25, 1963], No. 30814/64. Heading A1F. A rake-wheel type of haymaking machine comprises a frame beam 1 extending along a row of rake-wheels 4 the device being pushed by a tractor 35 through a pushing arm 25 attached to the front of the tractor so as to be pivotal about a vertical axis on the frame and to be fixable in various positions thereabout. The rake-wheels are mounted on cranks 10 carried by arms 8 which are all pivoted to the beam 1 and are interconnected by a bar 14, the arrangement being that described in Specification 914,096. The beam 1 comprises two vertically-spaced parallel tubes and a lug 23 to which the arm 25 is pivoted is carried by an intermediate member (not visible in Fig. 1) lying between the tubes; the same member carries a lug 24 from which a strut 26 extends to the pushing arm. The rear of the frame-beam is connected to the rear drawbar 41 of the tractor by a strut 39, which is, like the pushing bar 25, telescopically adjustable. The frame is mounted on three casters 5, 6, 7 of which the rear one 7 is lockable. The front castor has lugs 52 to which the bar 39 can be attached when it is necessary to draw the machine behind the tractor, the arm 25 being then detached and mounted in a parked position (shown dotted) parallel to the frame-beam 1.