baber/WOPTO huggingface dataset:
Patent GB-891450-A (GB)
Title: Isolation of chlorinated polymers of ethylene and articles formed from chlorinated polymers of ethylene
IPC: C08F6/12
Filed: 1960-09-20
Abstract: A porous film is made by applying a solution of a chlorinated polyolefin in carbon tetrachloride on to a moving smooth inert metal surface held at 100 DEG -200 DEG C. and under an ambient pressure not greater than atmospheric pressure and maintaining it thereon until the carbon tetrachloride content of the film is not more than 3%, the chlorinated polyolefin containing 20-50% chlorine and being derived from a polyolefin of number average molecular weight of at least 8,000 which is a member of the group consisting of polyethylene and copolymers of ethylene with a terminally unsaturated olefin of 3 to 6 carbon atoms, e.g. propene, 1-butene, 1-pentene and 1-hexene. Preferably, the number average molecular weight of the polyolefin is between 8,000 and 60,000 and the casting temperature is from 150 DEG -175 DEG C.  Chlorinated polyethylene is preferred.  The solution may be applied by casting or spraying a solution containing as little as 1%, preferably 2,5-25%, of the chlorinated polyolefin to the polished surface of a belt or a rotating drum, which may be disposed in a chamber held at subatmospheric pressure.  Substantially all the solven may be removed in this drying step, or alternatively, when the solvent concentration in the film is less than 3%, the film may be stripped off and the remaining solvent removed in a separate drying stage.  Specification 804,535 and U.S.A.  Specifications 1,582,604, 2,349,829, 2,405,480, 2,503,252 and 2,592,816 are referred to.
Patent GB-211256-A (GB)
Title: An improved adjustable draw bar for vehicles
IPC: B62D13/00
Filed: 1922-11-27
Abstract: 211,256. Foster & Co., Ltd., W., and Starkey, J. Nov. 27, 1922. No Patent granted (Sealing fee not paid). Couplings for road vehicles. - The point or points of connection of the draw bar to the trailer may be varied so that a central or non-central pull may be exerted by the tractor on the trailer. In the construction shown in Fig. 1, the triangular draw bar a is connected to a plate f hinged transversely at h to the trailer main frame or body or to the trailer front wheels. The connecting pins k may be moved to other positions in the plate f. The triangular draw bar may be replaced by a single bar, attached at any of several points to the plate f.
Patent GB-407460-A (GB)
Title: Improvements relating to road coverings and the production thereof
IPC: E01C7/35
Filed: 1932-11-16
Abstract: A road covering comprises asphalt or other bituminous material mixed with pieces of coke which are adapted to appear in the upper surface of the covering and render the same uneven.  The coke, which may be provided in the upper surface layer only or may extend throughout the whole mass of bituminous material, comprises 25 to 40 per cent by volume of the whole mass.  The coke pieces may be about 3 to 5 cms. in diameter.  The covering may be cast in the form of slabs.  Prior to mixing with the bituminous mass, the pieces of coke may be saturated with tar or like material under pressure, and on removal of the pressure, the excess saturating material escapes so that the coke pieces remain substantially porous.  The Specification as open to inspection under Sect. 91 describes also the production of road coverings comprising pieces of coke embedded in concrete.  This subject-matter does not appear in the Specification as accepted.
Patent GB-341569-A (GB)
Inventor: DALLENBACH WALTER
IPC: H01G13/02
Filed: 1929-10-25
Abstract: <PICT:0341569/III/1> The pressure in a water cooler 4 for a metallic-vapour discharge device, such as a mercury-vapour rectifier, is maintained lower than that in a condenser 6 by a rotary or piston compresser or by a liquid or vapour-driven jet pump 7 mounted in a connecting-pipe 5.  The condensate is returned to the cooler through a pipe 8 provided with a reducing valve 9.  The Specification as open to inspection under Sect. 91 (3)(a) states that the rectifier may have a second cooler (Fig. 2, cancelled, not shown), the vapour from which drives the jet pump. This subject-matter does not appear in the Specification as accepted.
Patent GB-617749-A (GB)
Title: Improvements in machines for spreading fertilizers and other materials
IPC: A01C15/00
Filed: 1946-11-01
Abstract: 617,749. Manure distributers. HOFFSTETTER, G. O. Nov. 1, 1946, No. 32544. Convention date. July 29. [Class 6 (i)] A distributer for fertilizers and the like comprises a hopper communicating with a receiver 12 which receives material from the hopper, an elongated housing 18' extending transversely from the receiver and having apertures in its base through which the material is discharged by a shaft 32 carrying blades 50 which assist in both conveying. and discharging the material. In the form shown, an endless conveyer 11 discharges material into the open receiver 12 the bottom of which communicates with the transverselyextending housing 18. The housing includes an inner section 19 with an outer section 20 hinged to each of its ends. The shaft 32 carrying the blades 50 is rotatably mounted within the housing and serves to convey material therealong and to eject it through holes 51 in the base. The shaft 32 is constructed in sections which correspond to the sections 19, 20'of the housing and which are releasably coupled together so that the sections 20 may be folded up for transport.
Patent GB-486091-A (GB)
Title: Improvements in or relating to lathes and allied machines
IPC: B23B13/12
Filed: 1936-11-27
Abstract: 486,091. Feeding bar-stack; chucks. FORKARDT, R. Nov. 27, 1936, Nos. 32601 and 32602. Convention dates, Nov. 27, 1935 and Feb. 26, 1936. [Class 83 (iii)] In a combined bar-stock gripping and feeding device and a work-holding chuck for a lathe &c., both are operated by fluid-pressure, the cylinder of the feeding device piston being coaxial with the machine spindle and the piston allowing the stock-bar to be fed axially through it. Separate pistons may be employed for the gripping and feeding device and for the workholding chuck or the piston for the former may also operate the latter, in which construction the piston 7, Fig. 5, of the feeding and gripping device has an extension 5 which engages with the extension 20 of the work-holding chuck 21 to close the latter when the feeding device reaches the end of its rearward movement. The feeding and gripping device is of similar construction to that described in connection with Specification 486,092, an adjustable bolt 12 carried by a rotatable member 11 being moved to grip the stock or release it upon relative movement between its support 8 and the piston 7, into a slot in which an extension of the member 11 engages. The chuck 21 is opened by spring pressure, but the rotatable member 23, carrying an adjustable gripping dog, resists backward movement of the stock 10 through the offcentre position of the gripping dog. A bevelclosing chuck 26, Fig. 6, may be used and in such a construction a spring-operated gripping device 23a is employed, to the rear of the feeding device, to prevent backward movement of the stock when the feeding device is on its return stroke. The feeding device may be adapted to reverse automatically and continue feeding for a number of strokes when a long length of stock is required for each work-piece. Specification 125,575, [Class 83 (iii)], also is referred to.
Patent GB-1424114-A (GB)
Title: Antibiotic g-52 and method for the production thereof
IPC: A61P31/04
Filed: 1973-07-10
Abstract: 1424114 Medicines comprising antibiotics SCHERICO Ltd 10 July 1973 [14 July 1972] 32719/73 Heading A5B [Also in Division C2] Pharmaceutical compositions comprise the new antibiotic "G-52" having the formula: and a carrier, the antibiotic optionally being in the form of a functional derivative, salt, hydrate, solvate or Schiffs base-oxazolidine derivative. There may also be present the antibiotic sisomicin with which it may be produced concurrently by fermentation of micromonospera zionensis (see Division C2).
Patent GB-1308792-A (GB)
Title: Aircraft ejection seat system with explosive canopy breaking means
IPC: B64C1/32
Filed: 1970-07-06
Abstract: 1308792 Aircraft cockpit canopy breakers STENCEL AFRO ENG CORP 6 July 1970 [7 July 1969] 32731/70 Heading B7G [Also in Division F3] An aircraft cockpit contains an ejector seat 10 and has a canopy C, which is broken by a shaped explosive charge immediately before the seat is ejected through the remains of the canopy, the cockpit also containing movable means movable towards the underside of the canopy C as the ejection operation begins, and a detonator which sets off the explosive charge at the same time as the movable means contacts the canopy. A movable beam 32 and its support members are ejected from catapult tubes 18 immediately prior to the seat 10 being ejected. As the beam 32 reaches the canopy a linear charge contained in the beam is detonated when a projection on the canopy (74), Fig. 3 (not shown), is struck by a detonating device (56), Fig. 3 (not shown, see Division F3), mounted on the beam, the resulting explosion breaking a hole in the canopy thereby facilitating later passage of the seat through the canopy. Alternatively the charge and detonator may be affixed to the canopy with the projection being fixed to the beam, Fig. 8 (not shown). The beam 32 may be dispensed with and the charge fixed to the top of a headrest 24 of the seat 10, Fig. 7 (not shown), so that the charge is detonated as the headrest reaches the canopy on ejection of the seat.
Patent GB-335097-A (GB)
Title: Improvements in railway and tramway rail joints
IPC: E01B11/32
Filed: 1929-10-29
Abstract: 335,097. K÷tterizsch, F. Oct. 29, 1929. Rail joints, with tread fishplates.- Locking- members c inserted in the ends of the rail web are separated vertically by a wedge d. The members c embrace the web and have inclined faces engaged by the wedge which has lateral extensions g with knobs or projections h seated in openings of the rail webs. The extension g may be engaged by a projection in one fishplate. A bridge-piece l may be inserted in recesses in the rail heads, or one or both fish-plates f or the upper member c may be extended as at n or o to engage gaps in the rail heads. Reference has been directed by the Comptroller to Specification 329,634.
Patent GB-543603-A (GB)
Title: Process for more effectively powdering the surface of fabric or paper having a plastic rubber coating
IPC: B29C37/00
Filed: 1939-12-28
Abstract: 543,603. Coated fabrics. DUBRULE, FATUS & CIE. Dec. 28, 1939, No. 32947. Convention date, Jan 7. Drawings to Specification. [Class 140] Fabric or paper strips or bands having a velvet-like appearance are made by applying a textile powder, e.g. of wool, cotton or silk to the warm rubber layer, passing two bands with their powdered surfaces in contact through a two-bowl calender, separating the bands at their powdered surfaces to bring up the nap, vulcanizing and lightly brushing. The powdered bands may, before calendering, be separately rolled up under pressure to cause firmer adherence of the powder to the rubber coating. Apparatus is described (a) for applying a plastic rubber film to the fabric or paper in a three-bowl calender and subsequently applying thereto textile powder from a powder box in conjunction with beaters operating on the lower surface of the fabric, and (b) for separating the calendered strips by unrolling on to separate rollers. Alternatively the powder may be projected on to the fabric by revolving rollers.
Patent GB-204971-A (GB)
Title: Improvements in carpenters' and like joints
IPC: E04B1/48
Filed: 1922-12-02
Abstract: 204,971. Bachmann, W. Dec. 2, 1922. Screw fasteners.-Relates to jointing rightangled brackets having screw-holes in its members and an outstanding flange on one member for engagement with a recess in the wood and consists in providing the member with a circular flange l surrounding the screw hole n for engagement with a circular recess in the wood. The other arms of the bracket are secured by a screw h and nut i. When a single bracket is used for joining parts at right angles 'the bolt is adapted to screw into a plate s sunk in the wood.
Patent GB-649758-A (GB)
Title: Process for the production of organosilicon polymers
IPC: C08G77/00
Filed: 1948-12-21
Abstract: Organosilicon polymers, in which silicon atoms are interconnected by methylene radicals and the remaining valencies of the silicon atoms are satisfied by methyl radicals, are made by reacting in the liquid phase and at a temperature, e.g. below 200 DEG  C., an organochlorosilane having the formula (CH3)nSiCl4-n, where n=1 to 3, or mixtures thereof where n has an average value between 1 and 3, with the complex formed by reacting aluminium or an alloy thereof with methylene chloride.  The silane(s) used may contain silicon tetrachloride.  In examples: (1) aluminium-copper alloy turnings were reacted with methylene chloride and the viscous complex formed was heated at 50-60 DEG  C. with trimethylchlorosilane; the resulting liquid was separated from precipitated aluminium chloride and distilled to give <FORM:0649758/IV (a)/1> and <FORM:0649758/IV (a)/2> volatile residue of high molecular weight polymers of these two compounds; (2) the aluminium complex formed as in (1) but with iodine as catalyst, was reacted with dimethyldichlorosilane and the product separated from aluminium chloride.
Patent GB-1002002-A (GB)
Title: Novel copolymers
IPC: C08F36/04
Filed: 1963-08-21
Abstract: An anhydrous mixture of formaldehyde and butadiene are copolymerized at -10 DEG  to 400 DEG  C. by free radical polymerization. The free radicals may be produced by ultra-violet irradiation or by the use of such catalysts as tertiary butyl peroxide.  The molar ratio of butadiene to formaldehyde may vary from 20 to 1 to 1 to 20. An anhydrous liquid vehicle may be present.
Patent GB-379164-A (GB)
Title: Improvements in or relating to shackles
IPC: F16G15/06
Filed: 1931-11-28
Abstract: 379,164. Shackles. RAYTON, T. S., 68, Patrick Street, Gt. Grimsby. Nov. 28, 1931, No. 33005. [Class 24.] In double bow shackles, the arms of one bow a, Fig. III, fit between the arms of the other bow c and have projections shrouding the .ends thereof. The shackle-pin b screws into one arm of the bow c and has a rounded head with a flat side bearing on the other arm. An intermediate flat portion for the application of a spanner, and a safety set-screw may be provided on the shackle-pin which may be further provided with a stop collar for the lateral support of the inner bow. Fig. I shows a modification of the outer bow c<1> for a shackle adapted to take a three-way pull.
Patent GB-1045489-A (GB)
Title: Improvements in and relating to apparatus for electrochemical machining
Inventor: ROSS EDWARD
IPC: B23H11/00
Filed: 1962-08-29
Abstract: <PICT:1045489/C6-C7/1> Electrochemical machining apparatus includes a chamber formed from or incorporating hollow sliding elements or a hollow flexible member; the chamber being arranged to enclose an electrode and at least part of a workpiece such that an electrolyte may flow through the chamber and between the electrode and the workpiece at a controlled pressure, and being capable of accommodating relative movement between the electrode and work-piece by mutual sliding of the elements or by flexing of the member.  Fig. 1 shows a chamber formed by telescoping cylinders 11 and 24, a machining electrode 21 and a workpiece 29, 30, e.g. a bolster and die block. Cylinder 11 is mounted on a ram 13 of a known machine and slides within cylinder 24 to advance the electrode 21 towards the work. Lifting tie rods 35 of plastics material and bolts 36 hold the lower cylinder 24 to the ram 13. In operation, the ram 13 is lowered until a plate 26 secured at the bottom of the lower cylinder contacts the workpiece.  Further lowering causes the chamber 11 to telescope within chamber 24.  Electrolyte is supplied through an aperture 17 into cylinder 11 and through passages 20 into cylinder 24. A pre-cut aperture in the workpiece 29, 30 allows the electrolyte to flow between the electrode and workpiece and away through channels 37 in the surface of a work table 32.  Current is passed between the workpiece as anode and the electrode 21 as cathode.  In an embodiment illustrated in Fig. 2 (not shown) the lower cylinder is replaced by bellows. In another modification the electrode may be mounted on the ram or a plate secured thereto.
Patent GB-1077736-A (GB)
Title: Automatic cross-winding machine
IPC: B65H54/553
Filed: 1964-08-14
Abstract: 1,077,736. Winding bobbins. W. REINERS. Aug. 14, 1964 [Aug. 16, 1963], No. 33208/64. Headings DID and D1J. In an automatic cross-winding machine in which winding stations are movable past a take-up spool changing arrangement 5, the spools 3 are doffed onto member 39 and are moved on or along the member by approximately their length or diameter after the addition of each further spool. The member 39 may be channel-shaped and have a pusher member to move the spools axially therealong, or may be a conveyor, preferably with dishes for the spools which are arranged either parallel or transversely to the conveying direction, the conveyor being movable the required distance after each spool change. As described the winding stations are mounted on a frame intermittently rotatable on a base 4, so that each winding station in turn is registered with a supply cop exchange mechanism (not shown). When a spool reaches a predetermined size a three-armed lever 7, 8, 9 pivots thus breaking the circuit of motor 14 driving drum 15 and also moving lever 10 into a position to actuate a switch 16 when the winding station stops opposite the arrangement 5 to start a cam shaft 19 rotating. This shaft causes in sequence current to be supplied to leads 28, 29, and 24, 25 to release the spool-as in Specification 1,008,778-a lever 36 to pivot to supply an empty spool, and lever 42 to push the doffed spool along member 39.
Patent GB-810025-A (GB)
Title: New polymeric materials
Inventor: CHARLTON WILLIAM
IPC: C08F8/00
Filed: 1955-11-21
Abstract: Polystyrene derivatives of molecular weight not more than 3,100 with an average of up to 1.0 substituents of the type -CH2OR for each aromatic nucleus, where R represents an hydrogen atom or an hydrocarbon or acyl radical which may be further substituted, may be made by reacting a chloromethylated polystyrene with an alkali metal derivative, e.g. sodium, potassium or lithium, of a compound ROH where R is a hydrocarbon or acyl radical, as defined above, or in the case where R is hydrogen by hydrolysing the acyl product in the presence of alkali and preferably an organic solvent.  The compound ROH may be methanol, ethanol, butanol, phenol, ethylene glycol monoacetate, methyl salicylate, acetic acid, stearic acid, salicylaldehyde, salicylamide, acetylaminophenol, methyl hydrogen terephthalate, salicyclic acid or lactic acid.  The chloromethylated polystyrenes may be obtained by reacting polystyrene with chloromethyl methyl ether as described in Specification 810,026.  The reaction with the alkali metal derivative which may be made in situ may be effected up to 140 DEG  C. in the presence of an inert solvent such as dimethyl formamide, methyl ethyl ketone, acetone or xylene. In a modification derivatives with an acyl radical of at least 9 carbon atoms, e.g. those derived from glyceride oil fatty acids, are made from the corresponding derivatives with an acyl radical of less than 4 carbon atoms by an ester-interchange process.  Polystyrene derivatives specified are butoxy-, phenoxy-, carbomethoxyphenoxy, carboxyphenoxy-, aldehydophenoxy-, acetoxyethoxy-, hydroxyethoxy-, acetoxy-, acetylaminophenoxy-, carbamidophenoxy- and hydroxy-methylpolystyrene and the esters of hydroxymethyl polystyrene with palmitic, stearic, methyl terephthalic and salicylic acids and the acids derived from castor and linseed oils.  Solutions of the derivatives may be used as coating compositions for the production of water-resistant films, e.g. dissolved in xylene with cobalt naphthenate driers.
Patent GB-787778-A (GB)
Title: Method of producing hafnium-free "crystal-bar" zirconium from a crude source of zirconium
IPC: C22B34/14
Filed: 1955-11-21
Abstract: Ductile zirconium substantially free from hafnium, aluminium, iron and vanadium is produced from a crude source of zirconium by treating the source material to convert the zirconium to the tetra iodide and thereafter reducing the tetra iodide to the trihalide, separating the relatively non-volatile reduced iodides of zirconium and the other metals present from the more volatile unreduced iodides of zirconium and the other metals, then separating the zirconium triiodide from the reduced iodides of the other metals by heating the mixture to disproportionate the zirconium tri-iodide and reform the tetra iodide thereof, which, free from the iodides of the contaminating metals, may be decomposed to produce pure zirconium.  According to a typical process, zircon sand is heated with carbon to form crude carbide which is then converted to iodide by heating the carbide in a stream of iodine.  The iodides of zirconium and of the metal contaminants are collected on the cooled coils of a removal lid or other condenser member of the reaction vessel and the zirconium tetra iodide and the other iodides so formed are then transferred to another reaction vessel containing powdered zirconium.  The latter vessel is evacuated and heated to 500 DEG  C. at which temperature the zirconium tetra iodide sublimes and reacts in the bottom of the vessel with the powdered zirconium metal to form nonvolatile tri-iodide.  The iodides of iron and vanadium are reduced at the same time and also collect at the chamber bottom. The vessel is then allowed to cool and any unreduced iodides collect on the condenser coils of the removable lid.  Thus the iodides of aluminium and hafnium are removed together with the greater part of any titanium iodide impurity.  The lid or condenser holding the unreduced iodides of hafnium &c. is then replaced by a new condenser member and again the vessel is evacuated and heated to 350 DEG  C. whereby the zirconium tri-iodide disproportionates to form pure zirconium tetra iodide which is condensed on the coils of the lid.  The residue in the vessel consisting of the reduced iodides of titanium, iron and vanadium together with a mixture of zirconium and zirconium di-iodide may be used as the reducing agent for the next batch of impure iodide in place of the powdered zirconium referred to above.  The pure zirconium tetra iodide condensed on the coils of the lid is finally heated and the vapours passed over a heated zirconium wire to obtain pure zirconium.