baber/WOPTO huggingface dataset:
Patent GB-1479304-A (GB)
Title: Haymaking machines
IPC: A01D78/10
Filed: 1974-10-01
Abstract: 1479304 Haymaking machines C VAN DER LELY NV 1 Oct 1974 [3 Oct 1973] 42644/74 Heading A1F A haymaking machine has all. the tines of each rotary rake member movable against a single spring from an inoperative transport position to a working position under the action of centrifugal force. Drive for the rotary rake members 3 and 4 (not shown) is taken from a tractor power take-off and is transmitted to a hub 18 which is freely rotatable about a sleeve 16 with which it is coaxial about an axis 17. A flange 21 is fixed to the hub 18 and has a housing 22 adjustably attached to it. A ring 36 embraces the outer surface of the hub 18 inside the housing 22 and is slidable upwardly and downwardly along that hub. A plurality of spokes 37 project radially from the ring 36 at regular intervals therearound and have their other ends attached to the top of an annular setting member 38. The fixed ring 39 carries at least one pair of guide strips 40 lying either side of one of the spokes 37. A compression spring 44 is wound helically around outside the hub 18 extending between ring 36 and ring 41. Pairs of tines are arranged at regular intervals about the circular flange 43 and are pivotable about shafts 46 which are in turn pivotable about stub shafts 48. Each pivotal shaft 46 is provided between corresponding tines with a lifting arm 49 carrying at its other end a ball or roller 50. The setting member 38 is provided with pairs of parallel partitions 51, one pair for each ball or roller 50. Spaces 52 are arranged in housing 22 such that each pair of tines can move vertically between an inoperative transport position and an operative position. Surrounding the rim of flange 21 which is attached to the upper surface 23 of housing 22 is an annular adjusting member 24 having an inwardly directed lip 26 overlying the top of flange 21. Bracket 27 supports locking pin 28 having a manually operable handle and extending through a hole in the lip 26, a hole in the housing top plate 23 and, between-these two holes, through a chosen one of a number of holes 29 spaced radially around and at a constant distance from the centre of the circular flange 21 coincident with the axis 17. Such an arrangement permits changeover from at tedding to a swarth or windrow preparing mode. When the rotating rake members 3, 4 are stationary the helical spring 42 is fully extended and the pairs of tines 44 are raised (Fig. 3). When the members are rotating, centrifugal force causes the tines to move into the operative position shown in Fig. 2. The arms 49 with the balls or rollers 50 serve to raise the spokes 37 against the action of the spring 42. The height of the rake members relative to ground wheels 30, is adjustable by means of a crank 34 which axially displaces a setting rod 32 threaded about a shank 33 of the crank 34.
Patent GB-993468-A (GB)
Title: Preparation of poly (vinyl carbonates)
IPC: C08F8/14
Filed: 1962-11-13
Abstract: Polyvinyl carbonates are prepared by reacting polyvinyl alcohol with alkyl or aryl chloro-formates in the presence of a base. Specified bases are pyridine, dimethyl and diethyl anilines, dimethyl toluidine, quaternary ammonium bases, and alkali metal and alkaline earth metal hydroxides and carbonates. Preferably the polyvinyl alcohol is dissolved in water, precipitated with pyridine and the water removed by distillation, the reaction with the alkyl chloroformate being effected with the polyvinyl alcohol suspended in excess pyridine. In examples suspensions of polyvinyl alcohol in pyridine are reacted with (1) ethyl chloroformate to give polyvinyl ethyl carbonate, (2) n-butyl chloroformate to form polyvinyl n-butyl carbonate and (3) phenyl chloroformate to form polyvinyl phenyl carbonate.  The products give adhesive or flexible, non-tacky films.
Patent GB-934504-A (GB)
Title: Improvements in or relating to knitting machines and methods
IPC: D04B1/02
Filed: 1960-12-13
Abstract: 934,504. Knitting machines &c. SCOTT & WILLIAMS Inc. Dec. 13, 1960 [Dec. 18, 1959], No. 42857/60. Class 74 (2). In the production of pile fabrics comprising a base fabric and pile loops knitted in the same operation on a circular knitting machine excessive tension in the pile loops is avoided and long loops formed by employing elements which are movable between pairs of needles to draw the loops. Pins 36 are provided in a disc 34 rotatably driven by a gear train from a pinion 18 rolling along the shanks of needles 4 and engage successively between the pairs of needles during operation. The pile yarn P is fed at a relatively high level by the eye 44 and is engaged by the latch needles 4 immediately under the hooks as the needles pass the clearing cam 8 and move down the cam slope 10. The yarn N is fed from the lower eye 42 and is knitted in conventional fashion simultaneously with the pile yarn P by the stitch cam 14. During the cam dwell portion 12 the yarn P is drawn into loops L 1  by the pins 36 over a guide element 48 which imparts a right-angle bend to the loops which are then pushed off the pins 36 by an element 58. The pile loops may be cut to release them from the pins 36 if desired and brushed or combed to form a fluffy pile by a knife 82 or brush 92, Figs. 9-12 (not shown).
Patent GB-910932-A (GB)
Title: Purification of alkylene oxides
Filed: 1960-12-13
Abstract: Chloro-olefines are removed from C2 to C8 alkylene oxides by contacting the crude alkylene oxide with from 0.2 to 5% of its weight of a metal permanganate at a temperature of 0 DEG  to 100 DEG C. until a precipitate of manganese oxide is formed and separating the purified alkylene oxide.  The process is applicable to the purification of alkylene oxides prepared by treating the chlorohydrins with calcium hydroxide.  Preferably the crude olefine oxide is treated with the permanganate while boiling under reflux. The final separation of the alkylene oxide may be effected by distillation.
Patent GB-1283054-A (GB)
Title: Improvements in and relating to delayed release veterinary and pharmaceutical compositions
Inventor: GRANT P M
IPC: A23K1/00
Filed: 1969-08-28
Abstract: 1283054 Delayed release medicaments EASTMAN KODAK CO 28 Aug 1969 [10 Sept 1968] 42918/69 Heading A5B Delayed release medicaments in particular veterinary preparations intended to pass through the rumen and to release the medicament in the abomasum, are prepared by coating or mixing the medicament or a composition containing it with a cellulose derivative which is the reaction product of an unsaturated cellulose ester, ether or mixed ester-ether and a cyclic secondary amine, e.g. morpholine, the preparation of which is described in U.S.A. Specification 3514442. A wide range of medicaments are mentioned, e.g. antibiotics (such as chloramphenicol, tetracyclines, erythromycin and zinc bacitracin), sulphonamides, anthelmintics, growth promotors, hormones, vaccines, tranquilizers, antibacterial and antiviral substances and analgesics.
Patent GB-1157345-A (GB)
Title: Acrylic Elastomers
IPC: C08F291/00
Filed: 1966-09-27
Abstract: 1,157,345. Acrylic elastomer films and fibres. ROHM & HAAS CO. 27 Sept., 1966 [7 Oct., 1965], No. 43017/66. Heading B5B. [Also in Division C3] Fibres or films are formed by extruding into a coagulating bath a latex containing dispersed particles of a polymer composed of cross-linked polymeric loader particles obtained by emulsion polymerization and, sequentially emulsion polymerized on said loader particles, a cross-linked elastomeric acrylate copolymer having a second order transition temperature not exceeding 0‹ C. and containing (a) a major proportion by weight of mers of at least one C 2  to C 10 -alkyl acrylate or (b) a major proportion by weight of a mixture of mers consisting of acrylate mers of at least one C 2  to C 10 -alkyl acrylate together with up to an equal amount by weight of olefin mers of ethylene, propylene, isobutylene or mixtures thereof. Examples are given in which a hydrochloric acid coagulating, bath is used in the production of fibres from latices comprising (i) loader particles of ethyl methacrylate-divinyl benzene copolymer, methyl methacrylate-butylene glycol dimethacrylate copolymer, methyl methacrylate-vinyl-4-pentenoate copolymer, styrene-divinyl benzene copolymer or n-butyl methacrylate-divinyl benzene copolymer on to which is polymerized a mixture of n-butyl acrylate, acrylonitrile, methacrylamide and N-methylol methacrylamide, (ii) loader particles of ethyl methacrylate-divinyl benzene copolymer on to which is polymerized a mixture of n-butyl acrylate, acrylonitrile, acrylamide and N-methylol acrylamide, (iii) loader particles of styrene-divinyl benzene copolymer or ethyl methacrylate-divinyl benzene copolymer on to which is polymerized a mixture of ethyl acrylate methacrylamide and N-methylol methacrylamide, (iv) methyl methacrylate-vinyl-4-pentenoate copolymer loader particles on to which is polymerized a mixture of w-butylacrylate, acrylonitrile and methacrylamide and (v) loader particles of methyl methacrylate-divinyl benzene copolymer on to which is polymerized a mixture of ethyl acrylate, methacrylamide and ethylene. The latices (iv) and (v) are aged with formaldehyde prior to being spun. The fibres obtained are cured by heating, in some cases the final curing stage is completed while maintaining the fibres under tension. In Ex amples 45 to 47, a latex obtained from loader particles of methyl methacrylate-divinyl benzene copolymer on to which is polymerized a mixture of 2-ethylhexyl acrylate, hydroxyethyl methacrylate and methacrylic acid or glycidyl methacrylate, or of 2-ethylhexyl acrylate and glycidyl methacrylate is cast on to polytetrafluoroethylene-coated glass, dried and then cured at 200‹ C. to yield films.
Patent GB-972525-A (GB)
Title: Improvements in or relating to information storage systems
Inventor: STRACHEY CHRISTOPHER
IPC: G06F3/06
Filed: 1962-11-14
Abstract: 972, 525. Electric digital data-storage. MULLARD Ltd. July 31, 1963 [Nov. 14, 1962], No. 43083/62. Heading G4C. Delays in transferring data between a cyclic store, having T tracks with p data positions in each, and a random-access store, are reduced by storing transfer instructions in a TI register the address of which is stored in that one of A HQ registers corresponding to the (intended or present) position (p) of the data in the cyclic store, the HQ registers being scanned sequentially in synchronism with the progression of the cyclic store, detection during scanning of an address in a particular HQ register effecting the corresponding instructed transfer of data and replacing the address in the HQ register by that of the TI register containing the next (if any) instruction for the same position (/>) (i.e. different channel) of the cyclic store. The cyclic store may be a magnetic drum (as shown), a set of recirculating delay lines or a set of magnetic tape loops. The randomaccess store and the HQ and TI registers may be parts of a magnetic core matrix, the HQ registers being fixed in position but the rest being variable. In the Figure, the addresses of the HQ registers are recorded on an extra track Ta of the cyclic (drum) store to enable scanning of the HQ registers to be done. The arrangement is suitable for use in a computer carrying out two or more concurrent operations: when one operation is held up due to the necessity for a data transfer as above, the computer automatically deals with another operation. The transfer instructions in a given TI register consist of the cyclic store address (including an indication whether reading or writing is required), the random-access store address, a link address specifying the address at which the computer is to resume its instructions after data transfer has taken place, and the address of the TI register holding the next (if any) transfer instruction for that position (p). After the data transfer has taken place, the transfer instructions in the TI register are released for use elsewhere (unspecified except that the link address is sent to the computer's list of operations).
Patent GB-1056447-A (GB)
Title: Process for the production of impact-resistant vinyl chloride graft copolymers
IPC: C08F265/04
Filed: 1963-11-01
Abstract: Impact resistant graft polymers are made by polymerizing in aqueous phase in the presence of suspension stabilizers and radical forming catalysts a mixture of 5 to 30% of a chlorinated ethylene-propylene copolymer and 95 to 70% of vinyl chloride.  The vinyl chloride may be used in admixture with an acrylic ester, such as ethyl, butyl, octyl and tridecyl acrylates, or polymers of such acrylates may be present in the reaction mixture in emulsion form. Catalysts specified are organic peroxides and azo compounds.
Patent GB-1514010-A (GB)
Title: Products of wollastonite crystals and manufacturing the same
IPC: C04B14/04
Filed: 1976-10-20
Abstract: 1514010 Wollastonite agglomerate J V WORTHINGTON 20 Oct 1976 43446/76 Heading C1A An agglomerate of wollastonite (calcium silicate) crystals comprises a spherical shell construction having up to 150Á outer diameter, with an interior space defined by the shell, at least 50 wt. per cent comprising #-wollastonite crystals interlocked three-dimensionally. A shaped product of wollastonite crystals may be obtained by dispersing the agglomerate in water, optionally adding inorganic/organic fibres, clay, or cement, shaping and drying. The agglomerate may be prepared by drying and firing a slurry of xonotlite crystals at 1000-1100‹C, the xonotlite slurry being prepared by heating an aqueous slurry of SiO 2  and CaO under steam pressure.
Patent GB-1514299-A (GB)
Title: Quenching sheet metal
IPC: C21D1/18
Filed: 1975-10-23
Abstract: 1514299 Quenching sheet metal CREUSOTLOIRE 23 Oct 1975 [22 Nov 1974] 43625/75 Heading C7N Sheet metal is quenched by an aerosol stream directed perpendicularly to and parallel to the sheet path, the aerosol being preferably water droplets in air or steam. The sheet 20 emerging from roll furnace 1 passes through rolls 2 and into a quenching station having rolls 3, 4, housing 51, and housing 8 which has seals 9 contacting rolls 3, 4 to define an air-tight chamber 61. In this chamber the sheet 20 is contacted by the aerosol, which may be formed by mixing liquid and gas supplies from 12, 13 in chamber 612 Fig. 3, the aerosol exhausting at 611. In modifications, a turbulent aerosol flow may be achieved by mechanical impellers (14) Figs. 4, 8 (not shown), or by aerodynamic impellers (26) Figs. 6, 10 (not shown); at least one constituent of the aerosol may be injected in chamber (61) Figs. 5, 6, 9, 10(not shown); the cross section of the chamber (61) may vary across the sheet (Figs. 5, 6, 9, 10); and a device may be provided to assist the exhaust Figs. 7, 8, 9, 10 (not shown). The apparatus may have a second chamber (62) similar to chamber (61), necessitating a further set of rolls (7) Fig. 2 (not shown). The rolls 2, 3. 4 (7) have mechanisms to maintain contact with the sheet, 21 31, 41, (71) respectively. The sheet maybe subjected to a tensile stress prior to or during quenching, and further cooling may be provided by atomizers 19.
Patent GB-948962-A (GB)
Title: Polymers derived from polyvinyl phenols
Inventor: PACKHAM DONALD IAN
IPC: C08F8/12
Filed: 1960-01-22
Abstract: Arsonic acid derivatives of polyvinyl phenols are used for the extraction, concentration and purification of ions from solution under either static or dynamic conditions.  They are particularly adapted for the extraction of uranium from dilute solutions. Specification 762,085 is referred to.ALSO:Arsonic acid derivatives of polyvinyl phenols may be produced either by diazotizing a polyvinyl aminophenol and then arsonating the diazo compound obtained, or by diazotising an arsonated amino-aromatic compound in the presence of a polyvinyl phenol. Polyvinyl phenols specified are poly-p-vinyl phenol and copolymers of vinyl phenol with substituted vinyl phenols, e.g. p-acetoxy styrene, or with vinyl monomers, such as divinyl benzene, which form cross-linked products.  Specified derivatives are poly (hydroxy-styrene arsonic acid) and poly(hydroxy-styrene azo-arsanilic acid).  The products have ion-exchange and metal chelating properties and may be used in the form of soluble or insoluble resins or as membranes in ionic systems.  In Example I p-acetoxy styrene is copolymerized with divinyl benzene, the copolymer is hydrolysed, nitrated and reduced to give poly (3-amino-4-hydroxy-styrene) which is then diazotized and finally arsonated using sodium arsenite, sodium carbonate and copper sulphate.  In Example 2 o-arsanilic acid is diazotized in the presence of a p-acetoxy styrene/divinyl benzene copolymer. Specification 762,085 also is referred to.
Patent GB-1394634-A (GB)
Title: Steam flatiron
IPC: D06F75/20
Filed: 1973-09-18
Abstract: 1394634 Steam irons GENERAL ELECTRIC CO 18 Sept 1973 [18 Sept 1972] 43755/ 73 Heading D1A A steam iron 'has a peripheral slot 26 to provide a "curtain" of steam between a smooth soleplate 10 with a steam generating chamber 16 and a coverplate 22 with a peripheral extension 32 extending to the ironing surface of the soleplate. The slot may extend along the whole or part of each side of the soleplate but does not extend along the heel (34) (Fig 3, not shown). The iron further comprises a water tank 14 and a drip valve 20.
Patent GB-1364612-A (GB)
Title: Apparatus and installation for the precision positioning of a  machine or vehicle arranged to travel on rails
IPC: B61L3/22
Filed: 1972-09-21
Abstract: 1364612 Vehicle positioning arrangement BROWN BOVERI & CIE AG 21 Sept 1972 [22 Sept 1971] 43856/72 Heading B7N In an arrangement for positioning a vehicle, e.g. a coke oven operating machine, at a point on a railway track defined by a cross-over K in alternating current carrying conductors 2 extending parallel to the track, any variation in the amplitude of the signal picked up by the vehicle carried pick-up coil 3 coupled to the conductors due to variation in distance between coil and conductors is compensated by varying the gain of an amplifier 6 in the output circuit of the coil. A second coil 4 carried by the vehicle in which the voltage picked up also varies with said distance is connected to a differential amplifier 7 in which the voltage is compared with a fixed voltage from source 11 and the output from the amplifier is used to control the gain of a variable gain amplifier 6 to which the output of coil 3 is applied via phase discriminator 5. The output from the amplifier controls an indicator showing the distance of the vehicle from the stop position and also controls the drive and brake elements to bring the vehicle to a halt when the picked-up voltage drops to zero. A rough positioning device (not shown) operating, e.g. by counting wheel revolutions brings the vehicle to a position close to the stop position at which the vehicle is switched to slow speed and the positioning apparatus shown is energized.
Patent GB-965546-A (GB)
Title: Improvements in and relating to transistor digital computing circuits
Inventor: TEMPEL JULIAN ANDRE
IPC: H03K19/082
Filed: 1959-12-24
Abstract: 965,546. Transistor pulse circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 16, 1961 [Dec. 24, 1959], No. 43893/59. Heading H3T. Fig. 1 shows a circuit for producing an output pulse f at the end of a coincidence period of a pulse b and a clock pulse a. The blocking oscillator comprising transistor T1 and transformer TR provides a pulse c when the AND gate comprising diodes RF2 and RF3 indicates the coincidence of pulses a, b. The positive part of pulse c is passed by diode M1, charging capacitor C1 and cutting off transistor T2. The fall in collector voltage of T2 is limited by diode M2 to provide the output pulse f at terminal OP. Pulse f is terminated by a resetting pulse g at terminal Z, restoring conductivity in T2. The circuit may be operated by the coincidence of more than two pulses by the use of further diodes or by both AND and OR gates. Pulse f may be fed back to the input to provide a onedigit store.
Patent GB-1254453-A (GB)
Title: Burners having a pulsating mode of operation
Inventor: DESTY DENIS HENRY
IPC: F23C15/00
Filed: 1968-09-16
Abstract: 1,254,453. Pulsating burner processes. BRITISH PETROLEUM CO. Ltd. 22 Aug., 1969 [16 Sept., 1968], No. 43938/68. Heading C2C. [Also in Divisions C1 and F1] A burner having a pulsating mode of operation comprises a combustion chamber with grossly rough walls and a gaseous oxygen/fuel inlet system which has a low resistance to gaseous flow and which is arranged to mix the fuel and oxygen at one end of the combustion chamber so that in operation a series of explosion waves is produced by repeated ignition of an explosive mixture formed in the combustion chamber. In Fig. 2 the wall of the combustion chamber 10 has a spiral metal rod 27 secured thereto. At the inlet end of the chamber is a mixing chamber 24 to which fuel is supplied through duct 21 and air through annular duct 22. A sparking plug 26 projects into the chamber. In Fig. 3 air is supplied through manifold 33 and ducts 29 and fuel is supplied through manifold 28 and ducts 30, an igniter device 26 projecting through the end wall of the chamber. In Fig. 6 an antechamber 24 is provided, an arm 40 having a vent 41 communicating with the chamber. A glow filament 42 is disposed adjacent the vent and serves to ignite the charges. Alternatively a pilot flame could be provided adjacent the vent 41. The burner may be used to obtain formaldehyde by combustion of methane, to telomerize ethylene with carbon tetrachloride and to form 1-naphthol from naphthalene.
Patent GB-1134976-A (GB)
Title: Improvements in or relating to optical readers for perforated tapes
IPC: G06K7/10
Filed: 1967-09-28
Abstract: 1,134,976. Tape readers. INTERNATIONAL STANDARD ELECTRIC CORP. 28 Sept., 1967 [5 Oct., 1966], No. 44227/67. Heading G4M. [Also in Division G2] A tape L illuminated by a lamp I and cylindrical lens Z is punched in 2-out-of-5 code, and pairs of optical fibres e.g. la1, lb1 are arranged as an optical decoder whereby one point on plate M, corresponding to the code punched in tape L, is brighter than all the others. Plate M is illuminated from the side by lamps II, III to provide a background illumination of sufficient intensity to render all points which are only illuminated by one fibre invisible. Photocells having an appropriate threshold level may be associated with plate M to give a decoded electrical output. The arrangement has application to telephone exchange fault evaluation systems.
Patent GB-1533054-A (GB)
Title: Welding apparatus
IPC: B23K37/04
Filed: 1976-10-27
Abstract: 1533054 Welding by fusion E G SPISAK 27 Oct 1976 [10 Dec 1975] 44616/76 Heading B3R Welding together the ends 20 of a metal workpiece 22 to form a ring and the ejection of the thus welded workpiece are effected in the following sequence:-(i) the workpiece is placed on supports 28, 34 of clamps 24, 26 with the ends 20 abutting a forwardly positioned gauge bar 16, (ii) the clamps 28, 34 are energized to grip the ends 20, (iii) an operator-protection, counterweighted gate 80 is downwardly closed and latched, (iv) the gauge bar 16 is retracted rearwardly, (v) a welding head 52, preferably plasma arc, is advanced forwardly by a reversible motor 70 acting via a screw 66, (vi) during said head advance, the clamp 26 closes leftwardly towards the clamp 24 to abut the ends 20 together, and then the head is energized and subsequently deenergized, (vii) the clamps 24, 26 are de-energized, the clamp 26 is rightwardly moved, and the gate 80 is unlatched, (viii) the de-energized head is reversed to commence its rearward return, the gauge bar 16 is extended to pass between the clamps 24, 26 and forwardly eject the welded workpiece, and, by engagement with a forward cam 84 on the gauge bar, the welding head is tilted to ride back on top of said bar to its rest position. The clamping of the work. piece and closure of the gate 80 are operator commanded and effected and the remaining operations are automatically effected by sequentially linked electro-linear or electro-fluid (e.g. as shown electro-hydraulic) means.