baber/WOPTO huggingface dataset:
Patent GB-966289-A (GB)
Title: Vacuum packaging apparatus
IPC: B65B47/10
Filed: 1963-04-30
Abstract: 966,289. Packaging apparatus. R. A. MAHAFFY, J. R. HARDER, and AMERICAN CAN CO. April 30, 1963 [May 3, 1962], No. 16945/63. Heading B8C. A packaging apparatus comprises package wall shaping trays into which a film is stretched by vacuum applied through evacuation ports in the base of the trays which engage with a vacuum supply port in an elongated member, the surface of which forms a seal with the trays after evacuation to retain the vacuum after the trays have progressed. A number of trays 10 each with a centre partition are mounted on an endless chain (not shown) which moves intermittently. A sheet of plastics film 14 is applied across the top of the trays and is clamped to the tray sides before being softened by a radiant heater 16. Each tray 10 has a slide seal assembly 18 (Fig. 3) beneath the partition, including a seal element 20 which is urged downwardly by a spring 24 against a retainer plate 26 until the seal element engages the inclined arms 36 of a member 38 which urge the seal element upwards, the tray being held by guide rails (not shown). The bottom faces of the seal elements and the upper face of the member are smoothly finished to ensure an air-tight connection. The member 38 has a vacuum port 40 which aligns with the evacuation port 22 in the station C and air is withdrawn from the tray through holes 48, 52 to each side of the partition 12, Fig. 7, thus drawing the film into the cavities to form a pair of package cups. Before moving the trays along, the valve controlling the vacuum is closed, the trailing edge of the seal element 20 being large enough to ensure that the part 40 is kept closed until the port 22 is completely blanked off. As the tray moves along to the filling station it registers with three further vacuum ports which renew and maintain the vacuum level to prevent shrinkage of the film when it cools. On reaching the arms 72 the port 22 is exposed to atmospheric pressure by which time the film is sufficiently cool and the contents assist in preventing shrinkage. The filled cups are closed by a second film 74 which is sealed to the first film. To enable evacuation of the package the second film is stretched away from the first film by a separator 76 associated with each seal assembly which slides within the partition 12 and rises through a preformed aperture in the first film. The separator is engaged by a pin 80 which is raised by an arm 82 to enter the seal assembly. At the same time a vacuum fitting 84 engages the seal assembly and air is withdrawn through passages in the separator from the package interiors. The packaging apparatus is basically similar to that disclosed in Specification 949,747.
Patent GB-853225-A (GB)
Title: Improvements in boxes with loose flexible linings
Inventor: CHIDGEY ALFRED LEONARD
IPC: B65D5/60
Filed: 1957-05-28
Abstract: 853,225. Lined boxes. ROBINSON Ltd., E. S. & A. May 28, 1958 [May 28, 1957], No. 16959/57. Class 18. A box with a loose flexible lining has a cardboard false bottom 5 forming part of a blank which also comprises wall panels 6, 7, 8, 9 and the marginal portions 13 of a sheet of flexible material 4 are adhered to the marginal portions of the wall panels 7, 9 so that when an insert formed from the blank is placed in the box the material 4 loosely covers the false bottom 5 and excess material is used to line apertures 11. The panels 6, 8 are folded perpendicularly to the panel 5 and extensions 10 stitched to the panels 8. The panels 7, 9 are folded back and fastened to the panels 6, 8 respectively to form the insert with walls extending above and below the false bottom 5. The corners 14 of the lining 4 are tucked between the double walls and the extensions 10. In a modification (not shown) the extensions 10 are omitted and the corners 14 of the lining are stuck to the underside of the bottom 5.
Patent GB-595120-A (GB)
Title: Improved polymerization process for olefins using a slowacting catalyst
IPC: C08F110/10
Filed: 1943-10-15
Abstract: Friedel Crafts metal simple or complex bromides in solution in lower paraffins are used as catalysts for the low-temperature polymerization of olefines.  Specified solutions are the double salt of AlBr and CBr4, AlBrOH. 2AlBr3, AlBrOH. AlBr3, AlOBr AlBr2, AlBr3. AlBr2OH AlOBr and AlBr3 in butane; AlOBr4. AlBr3 in propane; titanium bromide formate in ethane.  The oxybromides and hydroxybromides are prepared by adding water to the bromides and heating to drive off one or more molecules of hydrobromic acid. The complex salts are made by mixing equivalent proportions of the components with or without heat. Titanium bromide formate is made by treating titanium bromide with sodium formate in pentane.ALSO:In the low-temperature polymerization of isoolefins with or without polyolefines, a slow-acting catalyst solution, comprising a Friedel Crafts metal simple or complex bromide dissolved in a lower paraffin, is stirred into the olefin to form a homogeneous p  mixture.  A quick-acting catalyst, e.g. a solution of a Friedel Crafts metal halide in an alkyl halide, or formic acid, may be added to the mixture after polymerization has started.  There are specified: isoolefins-isobutylene, 2-methyl- or 2-ethyl-butene-1; polyolefins-butadiene, isoprene, piperylene, dimethyl butadiene, dimethallyl, myrcene; catalysts-the double salt of AlBr and CBr4; AlBrOH, 2 AlBr3; AlBrOH, AlBr3; AlOBr, AlBr3; AlBr3, AlBr2OH, AlOBr; or AlBr3 in butane; AlOBr, 4 AlBr3 in propane; titanium bromide formate in ethane.  Diluents, e.g. butane, diluent-refrigerants, e.g. ethylene, methane, ethane, propane, or an internal or external refrigerant, e.g. carbon dioxide, may be used.  The product may be compounded with carbon black, zinc oxide, stearic acid, sulphur and tetramethyl thiuram disulphide and vulcanized by heat.
Patent GB-476393-A (GB)
Title: Improvements relating to the production of ceramic materials
IPC: C04B35/16
Filed: 1936-06-18
Abstract: A ceramic refractory substance is made by burning a mixture consisting mainly of at least two magnesium silicates of the class known as steatites or talcs or soapstones, the natural crystals of which are of different sizes.  Such a mixture may comprise Göpfersgrün soapstone and Chinese (whitefiring) talc.  Clay, alumina or alkaline earths may be added.
Patent GB-307258-A (GB)
Title: Improvements in or relating to the manufacture of brackets
IPC: A47B57/42
Filed: 1928-06-14
Abstract: 307,258. Constructors, Ltd., and Finer, H. J. June 14, 1928. Brackets. - In brackets of the kind provided with a hook for engagement with a recessed upright, the hook 8<a> is made of wrought iron, steel or other metal and is formed with a shank 8 which is embedded in the bracket 7 by positioning it in the mould in which the bracket is cast. The hook may be provided with an extension 8<b>, afterwards removed, to facilitate positioning of the hook in the mould. The shank may be provided with lugs 8c to prevent the hook being withdrawn in the event of looseness occurring between the shank and bracket.
Patent GB-202964-A (GB)
Title: Composition and process for the manufacture of tobacco-pipes and other articles
Filed: 1923-07-03
Abstract: 202,964. Wingender, F. H. F. Aug. 24, 1922, [Convention date]. Fibrous plastic compositions. - A composition for making tobacco pipes, gun stocks, and other articles consists of asbestos, powdered briar-root, and a binding medium, e.g. varnish, gum lac, cellulose acetate, or cresylic phosphate. Powdered meerschaum or magnesium silicate mav also be added. The preferred composition for pipes consists of 120 grms. of carded asbestos fibres, 200 grms. of finely-powdered briar-root, 400 grms. o! briar-root in large grains, 100 grms. of powdered meerschaum, and 700 grms. of varnish. The dry ingredients are mixed and spread in thin layers on which the varnish is spread, after which the mixture is ground and beaten. After moulding, the articles are air-dried for 24 houre and then returned to the mould to correct their shape; after a second drying in the air they are heated to 70- 80‹ C. The baked articles are then glazed, polished, and varnished in the usual manner.
Patent GB-496069-A (GB)
Title: Tensioning means for running jigsaw
IPC: B23D51/12
Filed: 1937-06-21
Abstract: 496,069. Sawing-machines. WALKER-TURNER CO., Inc. June 21, 1937, No. 17236. Convention date, May 20. [Class 145 (ii)] A jig-saw machine having a power driven connection to the saw at one end and a spring tensioning device at the other, is adapted to accommodate blades of different lengths and is provided with means for observing and adjusting the tension while the machine is running. To the casing of the motor 10, which may run at several speeds, is secured a casing 11 carrying sliding bearings for a plunger which is driven from the motor shaft by a crank and connecting rod and reciprocates the lower end of the saw. The table 12 is clamped to an arcuate support carried by the casing 11 and is adjustable about an axis lying in the longitudinal plane of the motor, the base B and the upper arm C. The upper end of the saw is secured to a tube 41 slidable in a guide casing which can be moved up or down by a screw 54 to tension;more or less the spring 42 interposed between a collar 52 on the upper end of the slidable tube 41 and the lower end of the casing. The collar 52 projects through a slot 53 in the casing and moves along a scale. The connections between the saw and the guides allow adjustment of the saw to work in any direction. The saw is supported and guided towards its lower end by a member 66 mounted on the driving plunger. The upper guide 60 does not reciprocate but carries supporting rollers 61 bearing against the back of the saw. This guide may be adjusted in any direction. The upper guide tube 41 co-operates with a fixed tube 44 which it fits closely without touching to supply through tube 47 a slight draught of air to remove dust &c. When changing a blade, the head is lowered by screw 54 until a stop nut 51 on the moving element abuts against the end of the housing thus relieving the blade of spring tension.
Patent GB-1451792-A (GB)
Title: Timber protecting agents
IPC: B27K3/50
Filed: 1975-04-25
Abstract: 1451792 Synergistic pesticide compositions RIEDEL-DE HAEN AG 25 April 1975 [26 April 1974] 17286/75 Heading A5E A composition for protecting timber against fungi and insects comprises endosulfan and a trialkyl or triaryl tin compound, e.g. tributyl tin oxide or fluoride or triphenyl tin acetate. The composition may be applied as a paint or as an aqueous or organic solvent composition.
Patent GB-999388-A (GB)
Title: Improvements in or relating to 2-benzyloxy-malonic acid derivatives
Inventor: HOFMANN ALBERT
IPC: C07D498/14
Filed: 1962-05-07
Abstract: 999,388. 2 - Benzyloxy-malonic acid derivatives. SANDOZ PATENTS Ltd. May 7, 1962 [May 10, 1961], No. 17401/62. Heading C2C. The invention comprises compounds of general formula I in which R1 and R2 are alkyl (1-5 C), and X is hydroxy, chlorine, bromine, iodine or OR2; and their preparation by reacting a compound BrCR1(COOR2)2 with an alkali metal benzylate to form the diesters I (X=OR2), which are saponified with an alcoholic solution of an alkali metal hydroxide to the ester-acids I (X=ON), from which the halides are obtainable by known methods.
Patent GB-1337855-A (GB)
Title: Method and apparatus for measuring transmission of light along  a path
IPC: G01N21/27
Filed: 1971-05-27
Abstract: 1337855 Analogue to digital converters SAAB-SCANIA AB 27 May 1971 [1 June 1970] 17479/71 Heading G4H [Also in Division G1] The ratio of the intensities of light directly from a source and after interaction with an object is determined by generating pulses whose durations are dependent upon the ratio of the two intensities and during which pulses clock pulses are counted to derive a count representative of the ratio; the frequency of the duration significant pulses being an integer fraction of the frequency of clock pulses. The invention is applied to the measurement of transmissivity of a photographic film. Light from a light emitting diode 17 is received by a reference photo-cell 19 and after passing through a film (not shown) by a photo-cell 18. After amplification (30, 31), for each pulse emitted by the diode, calculator 29 generates a pulse VK whose duration is significant of the ratio and opens gate 28 to pass clock pulses from generator 22 to a counter 27. The ratio calculator 29 integrates the reference pulse SO and defines the end of the pulse VK when the result of integration equals the incident pulse St, the beginning of pulse VK is defined by a clock signal VL, divided at 25 from the clock source 22, and phase retarded by 90 degrees in the calculator 29.
Patent GB-175262-A (GB)
IPC: F41A25/02
Abstract: 175,262. Compagnie des Forges et AciÚries de la Marine et d'HomÚ- court. Feb. 14, 1921, [Convention date]. Recoil apparatus.-Relates to apparatus of the kind described in Specification 131,686, in which the flow of liquid is controlled by a spring-actuated valve the stroke of which is varied to suit the elevation. According to the invention, the controlling element 11 of the valve is carried by a recoiling brake-cylinder 7 and bears throughout the recoil stroke on a cam 13 which is automatically rotated as the gun is elevated by the engagement of a pinion on a shaft 20 with a fixed sector 22. The cam, which is preferably of spiral crosssection, is rotated through bevel-gearing 19, 18 in bearings 14, 15 and is supported by a sliding bearing 23. The toothed sector 22 has a non- toothed portion to prevent action until a given angle of gun elevation is reached.
Patent GB-1097417-A (GB)
Title: High impact polystyrenes
IPC: C08F36/04
Filed: 1965-04-26
Abstract: A polystyrene moulding composition comprises (1) a polystyrene-type resin, (2) a synthetic elastomer produced by alfin polymerization consisting of at least one polymer selected from (A) butadiene homopolymers and (B) interpolymers of at least 45% butadiene with at least one monomer selected from other conjugated aliphatic dienes and monovinyl aromatic hydrocarbons of the benzene series, said polymers (A) and (B) having a M.W. of 50,000 to 1,250,000 and (3) 0.5 to 99.5% of a polymer produced by the process disclosed in Specification 1,092,296.  Resin (1) may be a homopolymer of styrene, vinyl toluene, vinyl xylene, ethyl vinyl benzene, chlorostyrene, ethyl vinyl toluene, isopropyl vinyl benzene or diethyl vinyl benzene or a copolymer of at least 70% of one or more of said monomers with 1 to 30% of an alpha alkyl styrene, e.g. a -ethyl, p-methyl-a -methyl or a -ethyl styrene. In the examples, polymer (3) is produced by polymerizing butadiene, styrene and divinyl benzene in hexane with a sodium isopropoxide/allyl sodium/sodium chloride catalyst and subsequently adding a further amount of styrene to the resulting polymer and continuing the polymerization.  Polymer (2) is produced using the said catalyat for one stage polymerization of butadiene and styrene in hexane with 1,4-dihydronaphthalene as M.W. controller. Proportions of (2) and (3) are then blended with resin (1), a polystyrene.
Patent GB-502893-A (GB)
Title: Improvements in or relating to shot cartridges for use in airguns
IPC: F42B6/10
Filed: 1937-06-24
Abstract: 502,893. Shot charges for use in airguns. . RECKEWEC, H.-H. June 24, 1937, Nos. 17651, 17652, and 17653. Void. Convention dates, June 29, 1936, Oct. 28, 1936, and June 3, 1937. 9 9 (i) and 119] A shot charge for use in air-guns comprises a sleeve sealed at both ends and containing-a a filling of pellets, the rear end of the sleeve consisting of a stiff material and the forward end thereof consisting of a readily destructible material adapted to be pierced by the pellets on discharge of the gun. As shown in Fig. 1, the charge comprises a pasteboard sleeve 14 filled with lead pellets 17 and having its rear end 15 formed of comparatively strong material and united therewith in rigid fashion. The opposite end 16 consists of a readily destructible material such as a comparatively thin paper. The charge is inserted in the gun barrel 1 with its rear end 15 abutting against the perforated plug 6 which closes the forward end of the air chamber 2 in which the trigger-operated spring- controlled plunger 3 is adapted to operate. On discharge of the gun, the air forced through the plug 6 impinges on the end 15 of the charge and the latter is propelled forward. The specific weight of the pellets being considerably greater than that of the sleeve, their acceleration will also be greater, with the result that they will tear through the destructible end 16 and proceed towards-their objective with the usual dispersion, whilst the much lighter sleeve, opposed by the resistance of the air, will fall to the ground at a very short distance from the mouth of the barrel. Fig. 2 shows a modified form of rifle in which the rear part of the bore in the barrel 1 is slightly enlarged to form a chamber 1a whilst the air chamber 2 is extended towards the front so as to form a chamber 2a in front of the plug 6 and having a diameter equal to that of the chamber la. In this case, the charge is introduced into the chamber 2a and, on discharge of the gun, the air forced through the plug 6 impinges on the end 15 of the sleeve 14, which, however, can only travel as far as the shoulder 1b where it is stopped abruptly whilst the pellets tear their way through the thin end 16. If desired, instead of widening the bore to produce the chamber 1a, an inner sleevemay be introduced into the bore extending from the mouth of the barrel up to the point lb. According to a further modification, Fig. 4 (not shown), the chamber 2a is dispensed with and the charge is inserted in the chamber la, the charge, in this instance, having the stiff end 15 of the sleeve 14 capable of sliding in the sleeve in the manner of a piston instead of being rigidly united therewith.
Patent GB-491265-A (GB)
Title: Improvements in and relating to the manufacture of new compounds of therapeutic value
Filed: 1937-06-24
Abstract: 4 : 41 - Diaminodiphenylsulphone is condensed with aryl or aralkyl aldehydes to produce anils, which may then be converted into their water-soluble sulphonic acid derivatives by reaction with sodium bisulphite.  The products possess therapeutic properties.  Examples are given of the treatment of the sulphone with (1) benzaldehyde to give the monobenzylidene derivative, (2) anisaldehyde to form 4-p-methoxybenzylideneamino-41-aminodiphenylsulphone, (3) 4-dimethylaminobenzaldehyde to produce the mono-anil, (4) cinnamic aldehyde to yield the di-anil, and (5) piperonal to give the mono-anil.  In a further example (6), the product of (4) is treated with sodium bisulphite and yields a product of the formula <FORM:0491265/IV/1>
Patent GB-713659-A (GB)
Title: Improvements in or relating to concrete roof structures
IPC: E04B7/08
Filed: 1951-07-26
Abstract: 713,659. Arched roofs. SEFTON, W. Oct. 27, 1952 [July 26, 1951], No. 17748/51. Class 20 (4) A method of constructing an arched roof comprises erecting and assembling precast concrete sections 1 of shell thickness, i.e. up to 3 inches, side-by-side on temporary beams 2 supported on columns 3, finally incorporated in the walls at each side of the building to be roofed, and passing wires 6 through preformed aligned holes 5 in the sections 1, the wires 6 being tensioned to pre-stress the concrete, after which the beams 2 are removed and the holes 5 are grouted. The sections 1 are cast in shuttering on the ground and are raised on to the beams 2 by a cradle 4 having eyes 4a which can be engaged by a crane. This method enables reinforcing steel to be eliminated, the only reinforcement, other than the wires 6, being a fine mesh which is included to prevent surface erazing. Each end, and certain intermediate, sections may be formed with thickened ribs 1a.
Patent GB-1400969-A (GB)
Title: Concrete pump having two or more piston.cylinder arrangements with alternating induction and discharge actions
IPC: F04B15/02
Filed: 1973-04-12
Abstract: 1400969 Reciprocating pumps MASCHINENFABRIK WALTER SCHEELE 12 April 1973 [18 April 1972] 17756/73 Heading F1A A concrete pump comprises two or more cylinders 2, 3 communication via passages 15 with an inlet 5, and via passages 16 with an outlet 7, the passage being alternately opened and closed by side plates 8, 9 subtending an obtuse angle 13 bisected by a drive-shaft 14 connected to the plates, the shaft being oscillated to operate the plates to connect cylinders 2, 3 alternately to the inlet and the outlet. The passage openings are separated by partition strips 17 sealingly engaged by the plates, arcuate guide-members 21 also being sealingly engaged by the plates. The drive-shaft is axially displaceable to move the plates towards their seats.
Patent GB-121163-A (GB)
Title: Improvements in or relating to Rolling-machines for Strips of Metal or other Material.
Inventor: SLOPER THOMAS
IPC: B21D53/30
Filed: 1917-11-30
Abstract: 121,163. Sloper, T. Nov. 30, 1917. Bending and forming.-Roller machines for rolling, or shaping, or bending strips of metal and other material, more especially for rolling rims for wheels of pneumatic or other tyres, are constructed so as to permit of ready assemblage and adjustment of the rollers. The invention comprises three features : (1) The preliminary bending rolls are mounted in housings A so that the rolls and their driving connexions can be longitudinally adjusted in the machine frame B. (2) The shafts D<5>, D<6> of these rolls are driven by spur-wheels D<3>, D<4> operated by a third spur-wheel D<2> on the shaft D<1> of a worm-wheel D, the wormwheels D being driven by worms C' splined to a common longitudinal driving-shaft C. This construction permits the assemblage or withdrawal of the rolls X from the side of the machine on which the spur-wheels are mounted. (3) The final bending of the rims into circles of the required diameter is effected by coiling the rim as delivered by the rolls X by means of three rollers which are adjustable relatively to a central roller, and these four rollers are all mounted in a frame which is laterally adjustable relatively to the frame B, the rollers being driven by worm gearing from the shaft C, this gearing being so arranged that a key and slot permits the drive to be maintained in any lateral position of the adjustable frame. Recesses A* are machined in the housings A and machined projections B* engage these to give a sliding fit to the housing, which is held in its adjusted position by engagement of the heads of bolts A<1> in T-shaped slots B<1> when nuts A<2> are tightened. The worm gearing for the rolls X is mounted in boxes E which are adjustably mounted in a manner similar to the housings A. The boxes E are fitted with ball bearings C<4> for taking the end-thrust of the worm. A guide is employed to deliver the bent rims in the form of a spiral from which the wheels are finally made.