baber/WOPTO huggingface dataset:
Patent GB-1174097-A (GB)
Title: Improvements in or relating to Polymers
Inventor: WARSON HENRY
IPC: C08F8/12
Filed: 1966-09-03
Abstract: 1,174,097. Modified polyvinyl alcohols. DUNLOP CO. Ltd. 31 Aug., 1967 [3 Sept., 1966], No. 39469/66. Heading C3P. A modified polyvinyl alcohol is prepared by subjecting to acid hydrolysis an aqueous emulsion of a copolymer obtained by copolymerization of at least one readily-hydrolysable vinyl ester monomer and a vinyl ester monomer in which the carbon atom attached to the carbonyl group is quaternary, this second vinyl ester being difficultly-hydrolysable and being present in an amount of 0À1 to 40% by weight based on the total weight of the monomers, to obtain an aqueous solution of a modified polyvinyl alcohol product in which the second vinyl ester units and some of the ester linkages of the readily-hydrolysable monomer are not hydrolysed. The " readily-hydrolysable " monomers are capable of being 97% hydrolysed within 1 hour by refluxing with N 12  alcoholic potash. The hydrolysis may be aided by adding an alcohol which reacts with the carboxylic acid produced and removing the ester so formed. Suitable acid catalysts are alkyl benzene sulph. onic acids having an alkyl group of 10 to 14 carbon atoms, phosphonic acids, organic acid phosphates having an alkyl chain of 10 or more carbon atoms, sulphuric acid or para-toluene sulphuric acid. The modified polyvinyl alcohol solution may be spray dried or further treated to produce a solid product. The solid product or the solution may be treated with an aldehyde containing at least two carbon atoms, e.g. butyraldehyde to produce a polyvinyl acetal. In the examples a copolymer produced by polymerization of viny acetate and a vinyl ester of branched chain C 9-11  fatty acid using polyvinyl alcohol as emulsifier and hydrogen peroxide with or without fibrous ion as initiator is hydrolysed using dodecyl benzene sulphonic acid, sulphuric acid, water and methanol.
Patent GB-974427-A (GB)
Title: A silencer unit for air conditioning systems
IPC: F01N1/02
Filed: 1961-11-03
Abstract: 974,427. Air flow silencers. K. C. LYNN. Nov. 2, 1962 [Nov. 3, 1961], No. 39508/61. Heading FIB. A silencer for an air conditioning system comprises at least one pair of conical or pyramidal shaped resonaters 11, with bases adjoining but spaced apart slightly, arranged in a casing 1, lined with sound absorbing material 8, so that an annular air flow passage is formed therearound. As shown the casing 1 is of rectangular cross-section with a rectangular inlet 3 and the sound absorbing material 8 is retained by perforated plates 7. The resonaters 11 are arranged on a bar 6 carried by spiders 4 and are partly filled with sound absorbing material 8 retained between the pyramidal outer perforated wall 11 and conical inner wall 12.
Patent GB-811403-A (GB)
Title: Improvements in or relating to rolling mills
IPC: B21H1/02
Filed: 1956-12-28
Abstract: 811,403. Rolling. KELSEY-HAYES CO. Dec. 28, 1056 [Jan. 30, 1950], No. 39525/56. Class 83 (4). In a rolling mill for discs, the work is rotatably supported on a central pillar 15, Fig. 2, and engaged on opposite faces by pairs of rolls 5, 6 on carriages 2, movable towards and away from the centre of the work and means is provided for moving the rolls 5, 6 towards the work faces as the carriages 2 move. The carriages 2 slide on guides 7 in the machine base 1 and are actuated by pistons 35 in a double-ended hydraulic cylinder 34, the movement being synchronized by racks 41, 42 engaging a pinion 39. The rolls 5, 6 are mounted in heads 3, 4 pivoted at 11, 12 and are driven from motors 22 through splined shafts 17. Movement of the rolls 5, 6 towards the work faces is controlled by cams 23 engaging rollers 24 attached to the outer ends of the heads 3, 4. The cams 23 may be set in three positions by fluid pressure cylinders 30. In one position the cams 23 are free of the rolls 24 so that the heads 3, 4 may be swung open by means of a rack 45 actuated by a fluid pressure cylinder 44 and engaging gear segments 46, 47 on the heads 3, 4. In operation the carriages 2 are moved towards each other so that the rolls 5, 6 engage the centre of the work for radially outward movement during rolling and the wedges 23 are set at an intermediate position for the first rolling stage. The wedges 23 are then moved to the third position for a second rolling stage. Pins 32 (not shown) actuated by fluid pressure cylinder 31 lock the wedges in each position.
Patent GB-1431436-A (GB)
Title: Roller
IPC: E01C19/25
Filed: 1973-08-22
Abstract: 1431436 Road and like rollers J V BPOPPLEWELL 12 Oct 1973 [14 July 1972 22 Aug 1973] 33147/72 and 39808/73 Heading B7H A ground roller comprises a frame 1 mounted on front and rear ground rolls 3, 2, track members 23, 23<SP>1</SP> mounted on the frame 1 for supporting the wheel of a self-propelled vehicle carried by the roller, two pairs of friction drive rollers 4, 4<SP>1</SP> and 5, 5<SP>1</SP> set beneath openings in the track members and spaced apart to receive the driving wheels of the vehicle, and a chain and sprocket drive 9, 10, 11 connecting at least one pair of rollers 5, 5<SP>1</SP> to the rear ground roll 2. The front roll 3 is steered by mechanism actuated by a handle 12 positioned on one side of the frame 1 so as to be operable by a driver seated in the vehicle. The vehicle is driven on to the roller up detachable ramps fitted to members 29, 29<SP>1</SP> on the frame 1, the openings 6, 6<SP>1</SP> being closed by bridging plates until the front wheels of the vehicle have passed, and a detachable gate being fitted between posts 27, 27<SP>1</SP> when the vehicle is in position. The roller is prevented from moving while the vehicle is driven on by a locking bar (Fig. 7, not shown) having at one end a slot which engages a squared end on the axle 7<SP>11</SP> of the rear ground roll and at the other end an aperture which fits over the axle 7<SP>1</SP> of the rollers 5, 5<SP>1</SP>. The driving rollers 4, 4<SP>1</SP> and 5, 5<SP>1</SP> may have non-slip plastics surfaces and annular recesses which receive the driving wheels of the vehicle to restrict lateral movement thereof. A gear train may be used instead of the chain drive 9, 10, 11, and a chain drive may be provided between the rollers 4, 4<SP>1</SP> and 5, 51. The rolls 2, 3 are adapted to contain water ballast and ballast tanks may be provided on the frame 1.
Patent GB-879004-A (GB)
Title: Formic acid esters of 1-alkinyl-cycloalkanols and a process for their manufacture
Filed: 1959-11-24
Abstract: 1-alkynlcycloalkanol formate of formula <FORM:0879004/IV (b)/1> where R is hydrogen or a monovalent hydrocarbon radical and Z is a bivalent unsubstituted or substituted hydrocarbon radical, which may be carbon atoms 13-16 of a cyclopentanopolyhydrophenanthrene ring system, are prepared by reacting the corresponding cycloalkanol with formyl fluoride in an inert organic solvent below -20 DEG C., preferably at -80 to -60 DEG C. 17a -Ethynyl-19-nor-testosterone formate, 1-ethynyl-cyclohexan-1-ol formate and 1-propynylcyclohexan- 1-ol formate are claimed per se.  The cycloalkanols are preferably used in the form of their alkali metal alcoholates which may be obtained by the action of alkali metal amide in liquid ammonia. 17-a -Ethynyl-19-nor-testosterone formate is prepared both from 17-a -ethynyl-19-nor-testosterone-3-ethyl-enol-ether and from 17-a - ethynyl-19- nor-testosteroneethyleneketal, two isomeric 17-a -ethynyl-19-nor-testosterone-ethylene-ketal formates being isolated as intermediates in the latter case and hydrolysed with acetic acid to the product.  Products may be purified by silicic acid chromatography.  Specification 853,735 is referred to.
Patent GB-1320368-A (GB)
Title: Liquid freezing apparatus
IPC: A23G9/12
Filed: 1970-08-20
Abstract: 1320368 Liquid freezing apparatus H HOFER 20 Aug 1970 [29 Aug 1969] 40244/70 Heading F4H A liquid freezing apparatus, particularly for use with ice cream comprises a container 1 having a trough-shaped bottom 14, a rotatable freezing drum 5 mounted in longitudinal slots 7, 7<SP>1</SP> in the container, a scraper 18 mounted between arms 10, 10<SP>1</SP> for scraping engagement with the periphery of drum 5 at a level which in operation is above the level of the liquid in the container, and a plurality of metallic heat exchange elements 12 distributed through the interior of the drum and in heat exchange contact with the interior wall of the drum. A  eutectic sol, for instance a potassium chloride solution whose freezing point is at - 11À1 C. is used as a refrigerant in the drum 5. Copper or aluminium is used for the drum. As shown, the heat exchange elements are a series of parallel and equidistant metal discs 12 having apertures 15, 15<SP>1</SP> and 21 and stamped-out baffle strips 20. In another embodiment, the elements extend longitudinally through the drum forming compartments of sector-shaped cross-section (Fig. 3, not shown).
Patent GB-815570-A (GB)
Title: Compositions for controlling plant growth
Inventor: VEGTER GEERT CASPER
Filed: 1957-12-30
Abstract: A fertilizer or mixture of fertilizers e.g. basic slag, superphosphate, triple superphosphate, ammonium nitrate and sulphate, gypsum, dolomite, nitro-chalk, kainite, tri- and di-ammonium phosphate, urea and calcium cyanamide may be used as a carrier in a herbicidal composition comprising as active ingredient bis (2 : 2 : 2-trichloro-1-hydroxyethyl) sulphide to which also may be added a surface active agent, chloral or chloral hydrate or an additional herbicidal compound e.g. an alkali metal, ammonium or amine salt or ester of trichloroacetic acid, 2 : 2-dichloropropionic acid or 2 : 2 : 3-trichloropropionic acid.ALSO:Herbicidal compositions comprise bis-(2 : 2 : 2-trichloro - 1 - hydroxyethyl) sulphide together with a solid carrier, or a surface-active agent, or a solid or liquid carrier and a surface-active agent.  There may also be included chloral or chloral hydrate and an additional herbicidal compound which may have pre-emergent activity, e.g. an alkali metal, ammonium or amine salt, or ester, of trichloroacetic acid, 2 : 2-dichloropropionic acid or 2 : 2 : 3-trichloropropionic acid. The carrier may be the additional herbicidal compound or finely divided solids, e.g. china clays, attaclay, fuller's earth, pyrophyllite, attapulgite, talc or bentonite, sand, organic or inorganic fertilizers or mixtures thereof, e.g. basic slag, superphosphate, triple superphosphate, ammonium nitrate and sulphate, gypsum, dolomite, nitro-chalk, kainite, tri- and di-ammonium phosphate, urea and calcium cyanamide or liquid organic solvents or mixtures thereof, e.g. an aromatic hydrocarbon, an aromatic extract of petroleum distillate or a chlorinated hydrocarbon, an alcohol or ketone which solvents may also include emulsifying agents.  The compound may be made up in the form of dust, wettable powders or liquids and may be concentrated or diluted.
Patent GB-1202907-A (GB)
Title: Photographic cameras including a film counting mechanism
Inventor: STEISSLINGER KURT
IPC: G03B1/66
Filed: 1967-09-04
Abstract: 1,202,907. 907. Film transport mechanisms. EASTMAN KODAK CO. Sept.4, 1967 [Sept.2, 1966], No.40296/67. Heading G2A. Photographic camera includes a film counting mechanism having a metering wheel driven by the film during film advancing and re-winding, and means responsive to the opening of the camera to hold the wheel in a predetermined angular position and there to lock it against further rotation. As shown in Fig.2, the camera back 4 is open. The metering wheel 3 is rotated by the perforation 1a during film movement, and the wheel rotates a worm gear 10, mounted coaxially with the wheel, and the worm gear rotates a toothed wheel having the number of exposed film frames marked thereon. The metering wheel 3 is locked in the shown position by a biased lever 5 which, on closing the camera back 4 is moved against its bias out of engagement with a locking surface 6a. The lever 5 may be dis-engaged from the locking surface 6a, while the camera back is open by means of a manually accessible lug, 5b enabling the counting mechanism to be reset. With the back closed, and on advance of the film, the metering wheel 3 rotates and a cam wheel 8 is rotated therewith. After the film has been advanced by one frame a biased lever 7 drops behind a shoulder 8a on the cam wheel 8, causing a pawl 76 on one end thereof to engage a toothed wheel 2a linked to the winding mechanism to prevent further operation of the winding mechanism. The pawl 7b is disengaged by a pin 14 on actuation of the shutter.
Patent GB-1129284-A (GB)
Title: Polymerization process for the production of polymer/polyol compositions
IPC: C08G18/63
Filed: 1965-09-22
Abstract: 1,129,284. Polymer/polyol compositions; polyurethane foams. UNION CARBIDE CORP. 22 Sept., 1965 [24 Sept., 1964], No. 40363/65. Headings C3C, C3G, C3P and C3R. Flowable, low-viscosity polymer/polyol compositions are prepared by a continuous process which comprises introducing into a tubular reaction zone having a reactor surface to volume ratio of 5-300 square feet per cubic foot, an ethylenically unsaturated monomer, a polyol and a free radical catalyst either separately or in one or more admixtures to produce a polymerizable mixture in said reaction zone, and effecting flow of said mixture through said reaction zone under continuous or intermittent agitation and contact with a high heat transfer area to effect polymerization of said monomer and reaction of a minor amount of the resulting polymer with said polyol, whereby to form a polymer/polyol composition having the reaction product of said polymer and polyol dissolved therein, and in which the polymerization is effected at 70‹-200‹ C., and at atmospheric or superatmospheric pressure. The free radical catalyst may be a peroxide, hydroperoxide, azo compound, persulphate, perborate, persuccinic acid or diisopropyl peroxy dicarbonate. An inert organic solvent may be included in the polymerization mixture. Suitable polyols include polyhydroxy-alkanes, hydroxyl-terminated polyesters, alkylene oxide adducts, non- reducing sugars and sugar derivatives, polyphenols, polytetramethylene glycols and polyols derived from natural oils. Examples illustrate the polymerization of (a) acrylonitrile, (b) vinyl chloride, (c) vinyl acetate, (d) acrylonitrile - vinyl chloride, (e) acrylonitrile-styrene, (f) acrylonitrile - vinyl acetate, (g) acrylonitrile- 2 - ethylhexyl acrylate, (h) acrylonitrile - 2- hydroxyethyl methacrylate, (i) acrylonitrilestyrene - 2-hydroxyethyl methacrylate. The polymer/polyol compositions can be reacted with organic polyisocyanates to produce polyurethane compositions in conventional manner, the products being suitable for forming surface coatings, elastomers, foamed products &c. Foaming can be effected by including a small amount of water in the reaction mixture or by using blowing agents, e.g. halogenated hydrocarbons, low boiling hydrocarbons, ketones or ethers, or gas-yielding compounds such as N,N<SP>1</SP> - dimethyl - N,N<SP>1</SP> - dinitrosoterephthalamide or ammonium carbonate. In examples, polymer/polyol compositions are reacted with tolylene diisocyanates and foamed.
Patent GB-1487198-A (GB)
Title: Magneto-motive reciprocating devices
IPC: H01H51/10
Filed: 1974-09-17
Abstract: 1487198 Reciprocating motors W H KURPANEK 17 Sept 1974 [19 Sept 1973] 40425/74 Heading H2A A motor comprises two permanent magnets rigidly supported in a housing to define a space therebetween and a reciprocable body in the space polarized by an electromagnetic field generating means, the polarization being periodically reversed such that the body is attracted and repelled alternately by the two permanent magnets. Cobalt rare-earth magnets 1, 2 are rigidly mounted in a housing to provide a chamber 30 in which a coil 5 produces a magnetic field which polarizes a ferromagnetic plunger 9. The movement of the plunger towards either magnet operates a commutator switch to reverse the current in coil 5 thus producing reciprocating movement. A number of pairs of magnets may be arranged in a single housing with interconnected plungers, the coil currents being arranged accordingly, to provide sufficient power to drive various tools (Figs. 2-5 not shown).
Patent GB-1280916-A (GB)
Title: Automatic dispensing system
Inventor: ASPER THEODOR
IPC: G07F7/02
Filed: 1970-08-21
Abstract: 1280916 Releasable fastenings T ASPER 21 Aug 1970 [19 Sept 1969] 40452/70 Addition to 1249680 Heading E2A [Also in Division G4] An operating key for an automatic fuel dispensing system (see Division G4) is inserted in a predetermined angular position into a keyhole 22, a ring 28 is then rotated by means of handle 29 to move locking pins 27 radially inwardly, and if the key is genuine these pins enter recesses 15 in a cover 14 of the key. On rotation of the ring to its final position contacts 30, 31 close energizing a pump of the dispensing system. Counter reels 11 in the key are coupled by means of a magnetic clutch 9, 24 to a shaft 21 of the pump unit and are counted down as dispensation proceeds.
Patent GB-836185-A (GB)
Title: Improvements in or relating to the purification of liquid hydrocarbons
IPC: C10G17/02
Filed: 1958-12-18
Abstract: <PICT:0836185/III/1> Basic nitrogen compounds are removed from liquid hydrocarbon oil distillates by passing the oil, together with water, through a bed of solid bisulphate.  Bisulphates specified are hydrated sodium bisulphate, potassium, ammonium and lithium bisulphates, and mixtures thereof.  The amount of water added is preferably not more than 6 kg. per gm. mol. of basic nitrogen present in the feed.  The process may be operated at up to 40 DEG  C. and the bisulphate may be mixed with an inert filler.  Column A contains a bed of solid bisulphate supported on grid B.  Oil is introduced through line C and water is preferably introduced through distributer D (though it may merely be mixed with the oil in line C).  The treated liquid separates into 2 layers in zone E at the foot of the column, purified oil being removed via line G and water containing the impurities via line F.  Examples demonstrate the relative efficiency of the process when operated with and without the water. The process is applicable to straight run, cracked and reformed petroleum distillates, crude benzene and shale and tar distillates. Specification 202,422 is referred to.
Patent GB-1207482-A (GB)
Title: Improvements in or relating to angularly adjustable connections
IPC: B60P1/48
Filed: 1966-09-13
Abstract: 1,207,482. Excavators. F. W. McCONNEL Ltd. and H. W. NORTON. 12 Dec., 1967 [13 Sept., 1966], No. 40925/66. Heading E1F. [Also in Division B8] A cradle 13 for attachment to a tractor to provide an angularly adjustable connection for a multipurpose implement (not shown) comprises upper and lower members ,14, 15 spaced so as to receive between them body part 10 of the implement. Both the members 14, 15 have five holes 16 to 20 in line with one another in pairs. The holes 16, 17, 18 lie on an arc struck about the axis of the holes 20, and the holes 18, 19, 20 lie on an arc struck about the axis of the holes 16. The main body 10 is provided with two holes top and bottom disposed apart in side by side direction and a pin may be passed through the holes 16 or 20 and the body 10 and the body 10 then swung into one of three positions in which the other holes in the body 10 are in line with any of the holes 18, 19, 20 or 16, 17, 18, as the case may be, and a second pin passed through the said other holes to retain the required angular relationship between the implement and the tractor.
Patent GB-907498-A (GB)
Title: Rotary tool-holder for boring machines and similar machine-tools
IPC: B23B29/034
Filed: 1960-11-29
Abstract: 907,498. Boring heads. PAGLIERO, S. Nov. 29, 1960 [Jan. 25, 1960], No. 40935/60. Class 83 (3). A rotary tool holder comprises a body 1 having a driving portion 2, interchangeable tool supports 3, 4, screwed to the body at 7, coaxial spindles 10, 11, rotatable by graduated hand wheels 24, 23, secured thereto, and pinions 13, 14, on the spindles which engage racks on slides 15, 16, to move said slides radially to adjust tools 5, 6. Plungers 19, 20 are screwed into racks 15, 16, and the ends adjacent the tools are magnetized. The slides are secured in their adjusted positions by screws 17, 18, and the tools are secured by screws 21, 22, in the supports. A number of pairs of supports 3, 4 of different lengths are provided to increase the range of the tool holder.
Patent GB-973407-A (GB)
Title: Manufacture of electrically conductive cable
IPC: H01B1/02
Filed: 1963-10-17
Abstract: 973,407. Cables. WESTERN ELECTRIC CO. Inc., and SIMPLEX WIRE & CABLE CO. Oct. 17, 1963 [Oct. 19, 1962], No. 41011/63. Heading H1A. During a known process of manufacture of submarine cables, feeding back of the excess length during the reduction in the diameter of the sheathed cable by a die may cause " bracketing" of the core strands. According to the invention this is avoided by reducing the diameter of the stranded core SC in a die D which is alongside the stranding machine ST. Metal tape CT is then folded around the moving core CW by a 6-pass tube mill and the longitudinal seam is welded. The sheathed conductor CC is then passed through two more reducing mills and finally through a reducing die D<SP>2</SP> which forces some of the material of the sheath into the interstices of the core. In the embodiment shown the wires WS are stranded around a larger central wire CW, and are made of steel, the sheath being of copper.
Patent GB-1389603-A (GB)
Title: Load responsive switch
IPC: H01H35/00
Filed: 1972-09-05
Abstract: 1389603 Load responsive switches AMP Inc 5 Sept 1972 [17 Sept 1971] 41053/72 Heading H1N A load responsive switch 50, Fig. 5 particularly adapted for mounting on the springs 60 of a vehicle seat in order to operate a seat belt fastening signal or warning device ignition cutoff and &c. comprises a pair of parallel flexible resilient strips 32, 34 joined together at one end as by rivet 38, the other end of one strip 34 being rigidly attached to the switch housing 54 while the other end of strip 32 moves longitudinally within the housing 52 to actuate the switch when the assembly is flexed. The strips 32, 34 are held in position on opposite sides of a spacer 34 by U-section metal clips 40 loosely located longitudinally of the lower strip 34 by a pin (42) Figs. 1, 2 (not shown) and permitting the upper strip to slide longitudinally on the spacer 34. The end of the strip 32 Fig. 7 is bifurcated to form a pair of tongues 104 which frictionally engage opposite sides of a slide 64 having a transverse slot 70 through which a bridging spring blade contact 72 extends. In the unflexed state (Fig. 7, shown) the strip 32 has frictionally pulled the bridging contact 72 to the right, away from engagement with contact terminals 94 against the action of return spring blade extensions 74 of the bridging contact 72 which extend into recesses 76 in the housing 52. Flexing of the assembly caused by the seat being occupied by the driver or passenger causes the end of the blade 32 to move to the left in the housing 52 whereby the spring extensions 74 initially cause bifurcated contact ends 78 Fig. 6 (not shown) of the bridging contact 72 to engage the terminal contacts 94. On further movement of the end of the blade 32 after closure of the circuit to the warning circuit, the tongues 104 are free to continue frictional lost-motion sliding movement on the slide 64 whereby no additional pressure is applied to the contact assembly. Projecting ears 106 on the end of the blade 32 move in slots 108 in the housing 52 to limit excessive movement of the blade 32 within the housing 52.