baber/WOPTO huggingface dataset:
Patent GB-1179234-A (GB)
Title: Apparatus for Making Flat Film by Melt Extrusion.
Inventor: SMEDT FELIX FREDERIK DE
IPC: B29C48/08
Filed: 1966-03-17
Abstract: 1,179,234. Flat film melt extrusion apparatus. GEVAERT-AGFA N.V. 21 Feb., 1967 [17 March, 1966], No. 11822/66. Heading B5B. In apparatus for melt extruding a flat film of synthetic organic thermoplastic material, said apparatus comprising a slot die and a driven cooling roller located to receive the material extruded through the die, there is provided at each side of the path followed by the extruded material between the die slot and the cooling roller a stationary guide member to which the corresponding edge of the extruded material can adhere by surface tension effects as the material leaves the die slot, each of the mutually facing guide surfaces of the two guide members having a width (measured normal to the direction in which the material passes through the die slot) in excess of the width of the die slot and extending over at least part of the distance between the die slot and the cooling roller. As shown in Fig. 2, which is a cross-sectional view showing part of the die slot and one of the guide members, and in Fig. 3 which is a perspective view showing part of the extruder head and one of the associated film guide members, each end of the die slot is provided with a strip of metal of rectangular crosssection 19 in Fig. 2 and 20 in Fig. 3 which is fitted to the end plates 21 at each side of the die 11. When the hot film leaves the extrusion slot the edges of the film slide over the opposing faces of the edge guides 19 and 20 and are prevented from withdrawing from these faces and shrinking transversely by the adhesion which exists between the hot film edge and the metal surface. As a consequence the film follows the path shown by the broken line 22 in Figs. 2 and 3 instead of the path shown by the broken line 16 which the film would follow in the absence of the edge guides. The risk of damaging the concave side of the film is thereby avoided or reduced and transverse shrinkage of the film during its travel from the extrusion slot to the first cooling roll is prevented. Means may be provided for heating the guide members. They may be curved according to the intended general curvature of the film path between the die slot and the first cooling roller.
Patent GB-591484-A (GB)
Title: Apparatus for distributing powdered material over a travelling surface
IPC: B29C37/00
Filed: 1945-05-12
Abstract: 591,484. Treating rubber with powder. ST. HELENS CABLE & RUBBER CO., Ltd., and BURRETT, D. May 12, 1945, No. 11970. [Class 70] An apparatus for distributing powdered material over a relatively travelling surface, comprises a powder-porous textile fabric container supported above the surface, and extending transversely to the direction of relative travel, substantially from edge to edge thereof, and automatic means for imparting a periodic rising and falling movement to the bottom wall of the fabric container whilst relative travel takes place between the container and the surface to be dusted. In a preferred form adapted to the application of french chalk to rubber sheeting, the powder-porous textile fabric container 16, which is fed from container 19, is oscillated by means of straps 24 which are lifted through a vertical distance of about 3 inches by quadrants 23 operated by crank 25, rod 26 and an arm 27 which is activated by drive 39 through cam 33. Arm 27 is provided with a rubber buffer 37 to reduce shock. To enable the sheet 2 to be threaded easily through the device, doors 9 operated by drum 41 are fitted to each side.
Patent GB-500425-A (GB)
Title: Improvements in and relating to control systems for vapour arc converters
IPC: H02M1/04
Filed: 1937-04-27
Abstract: 500,425. Converting. GENERAL ELECTRIC CO., Ltd., and DUNHAM, C. R. April 27, 1937, No. 12027. [Class 38 (ii)] Relates to vapour arc converters regulated by adjustment of the point in the anode voltage cycle at which a control potential or current is applied to a control grid or ignition electrode, and consists in applying the anode voltage to a circuit which includes a unidirectional conducting device 13 and a source of adjustable D.C. voltage 11 whereby adjustment of.,the latter varies the point in the anode voltage cycle of the converter 10 at which the device 13 begins to conduct. The phase adjustable impulses thus produced are applied through a transformer 12 to the control grid of the converter, Fig. 2, or to the ignition electrodes 10a of a mercury pool converter, Fig. 3. In the latter case, a large condenser 18 is connected in parallel with the D.C. voltage source 11 to provide for the heavy but transient ignition electrode current, and the voltage drop across a resistance 19 may be utilized in place of an external source of D.C. Reference has been directed by the Comptroller to Specification 418,920.
Patent GB-278978-A (GB)
Title: Improvements in and relating to stoppers for filling fountain pens
IPC: B43L25/00
Filed: 1927-05-05
Abstract: 278,978. Dunkerley, G. May 5, 1927. Fountain-pen fillers.- An ink-bottle stopper for use in filling fountainpens of either the selffilling or non self-filling type has one portion B, Fig. 1, which fits within and forms a closure for the neck of the bottle C and a portion A of less external diameter provided with a central bore through which the nibcarrying end E of the pen is inserted the pen being thereby gripped and supported, so that on inverting the bottle the pen may be filled by several operations of its self-filling lever, or by giving the bottle and pen several downward jerks or swings to impart to the ink a momentum sufficient for it to displace the air within the pen sac or barrel. The stopper is made of indiarubber or like material, and may be provided with peripheral flanges F which bear upon the rim of the neck of the bottle, the relative positions of the parts being such that the bore which receives the pen remains uncompressed when the stopper is inserted into a bottle. In another form, Fig. 2, the pen-supporting part A, is disposed below the closure part B, the part A then projecting within the ink-receptacle so that when the latter is inverted the space G around the part A receives any sediment &c. that may be present. The bore of the part A may be tapered, and is normally closed by a plug. A screw-cap or the like for retaining the stopper in position may be provided instead of, or in addition to, the walls D or like portions of the stopper which engage within the neck of the bottle, or the walls D may fit outside the neck with or without additional securing means.
Patent GB-859521-A (GB)
Title: Process for the production of a thermoplastic filament
IPC: D01D5/42
Filed: 1959-04-09
Abstract: <PICT:0859521/IV(a)/1> Filaments of organic thermoplastic high polymers are made by drawing a continuous narrow strip of the polymer through a slot which is narrower than the width of the strip so as both to fold the strip longitudinally in an irregular manner and to flatten the strip, and thereafter stretching the resultant folded, flattened strip lengthwise at an elevated temperature to produce the filament.  The term "strip" is defined as including a tube, in which case the width of the strip is the diameter of the tube. The strips may be formed by continuously cutting in the longitudinal direction a travelling continuous length of film into a number of narrow strips. As shown, a travelling web of film 15 of a polymer such as polyethylene made by a low-pressure process, or polyvinyl chloride is longitudinally slit by knives 14 into parallel strips 16 of a uniform breadth, e.g. 1/10 to 1/2 inch, which are drawn by a pair of rollers 1 in the direction of the arrow P and then by a pair of rollers 3 through nozzle-shaped slots 17 in the rail 7.  These slots have a rectangular cross-section of such a size that the individual strips 16 are folded over somewhat irregularly in the slots, the breadth of each strip after being folded being, for example, one-third to one-half of its original breadth.  The folded strips 19 are drawn over a guide roller 9, under two guide rollers 10, 11 half immersed in a bath of water at 80-100 DEG C., over a guide roller 12 and through the nip of a pair of rollers 5. the peripheral speed of which is about three to four times that of the rollers 3. Each of the folded and stretched strips, now in the form of a filament, is taken up on a conical bobbin 13.  The lower portion of the rail 7 dips in a bath of glycerine maintained at about 70-80 DEG C.  The stretching may be carried out while the strips are passing through a hot air duct instead of a water bath.  Each strip may be drawn through a series of slots of consecutively decreasing width prior to the stretching stage.  The slots may widen towards their inlet ends (which may be rounded) and towards the tops of the rails in which they are located.  Fabrics woven from polyethylene filaments produced according to the invention have a tensile strength and resistance to abrasion greater than that of linen or cotton fabric of the same weight.  The fabric may be rendered practically water tight while remaining permeable to air by maintaining it at 100-120 DEG C. for about 15-100 seconds while preventing it from shrinking fully.
Patent GB-700121-A (GB)
Title: Improvements in lithographic printing apparatus
IPC: B41N7/04
Filed: 1951-05-25
Abstract: 700,121. Printing processes. COATES BROS. & CO., Ltd., and BLACK, D. J. Jan. 21, 1952 [May 25, 1951], No. 12332/51. Class 100 (2) Damping apparatus.-A roller 1 for use in lithographic printing apparatus as a scavenging roller and for applying moisture to the damping roller has a bimetal surface consisting partly of an ink-receptive metal, e.g. copper or brass, and partly of a water receptive and, when damp, ink repellant metal, e.g. chromium, chromium alloy, or a tin-nickle alloy 2, the surface areas of the two metals being such that the damping roller is contacted by both metals in the course of four or five revolutions. Preferablv the damping roller contacts the water-receptive metal once for each 1-4 times it contacts the ink receptive metal. The roller may be formed by coating a copper roller with chromium and etching or turning away the chromium except on the parts where it is required or by coating a copper roller with chromium only in those parts. The two metals may form a chequered longitudinal stripe or helical pattern. Specification 488,444 is referred to.
Patent GB-275735-A (GB)
Title: Improvements in electric incandescent lamps
IPC: H01K1/20
Filed: 1926-05-14
Abstract: 275,735. General Electric Co., Ltd., and Smithells, C. J. May 14, 1926 Filaments, supports for; residual gases.-Supports for tungsten filaments consist of or are coated with chromium, or, less suitably, with uranium or manganese, for the greater part of their length, to become sufficiently heated to remove water vapour from the bulb, but the chromium &c. is absent from the part in the immediate neighbourhood of the filament to avoid its alloying with the tungsten. Specification 6658/10 is referred to.
Patent GB-611256-A (GB)
Title: Improvements in or relating to the low temperature polymerisation of olefines
IPC: C08F36/04
Filed: 1946-04-25
Abstract: Olefins or diolefins which polymerize at low temperature in the presence of a Friedel-Crafts catalyst to give high molecular weight polymers are polymerized by mixing together under conditions of high turbulence and without using a moving stirring device, a solution of the monomeric material and a solution of a Friedel-Crafts halide catalyst, both solutions and the mixture being cooled to below -10 DEG  C., the mixing being effected by passing the two solutions separately through each of two tubes which unite to form a single tube.  Monomers specified are isobutene, styrene, a -methyl styrene, butadiene, 1 : 3-dimethyl-4-vinylbenzene, cyclopentadiene, and divinyl benzene. Catalysts <PICT:0611256/IV(a)/1> specified are aluminium chloride, boron fluoride and complexes thereof, and as solvents, methylene, ethyl and methyl chlorides, lower boiling hydrocarbons or carbon disulphide may be used. Internal or external refrigerants may be used.  The catalyst may be quenched by adding an alcohol such as ethanol or isopropanol preferably at low temperature. In Fig. 1, the catalyst solution enters through pipe 1 and monomer solution through pipe 2.  These pipes lead to coils 3 and 4 which are immersed in a refrigerant bath 5.  Contraction of the pipes before reaching the point 6 causes high turbulence in the narrow pipe 7.  In the Provisional Specification other methods of creating high turbulence are referred to, other than using two tubes joining into a central common pipe.  Specification 611,255 is referred to.
Patent GB-1039946-A (GB)
Title: Perhaloacetone cyanohydrin derivatives
Filed: 1965-03-24
Abstract: The invention comprises compounds of the general formula <FORM:1039946/C2/1> wherein M represents an alkali metal, X represents chlorine or bromine, and n and m, which may be the same or different, are 0, 1, 2 or 3, with the proviso that n + m is at least 1.  The compounds are prepared by reacting an alkali metal cyanide with a compound of the formula <FORM:1039946/C2/2> under substantially anhydrous conditions in the presence of tetrahydrofuran.  The compound may be converted to amides of the formula <FORM:1039946/C2/3> by heating with conc. H2SO4, which amides may be converted either in situ or in a separate step to the corresponding acids of the general formula <FORM:1039946/C2/4> Examples are given.
Patent GB-214843-A (GB)
Title: Improvements in hoods for use on vehicles
IPC: B60J7/12
Filed: 1923-05-10
Abstract: 214,843. Daimler Co., Ltd., and Bush, A. E. May 10, 1923. Hoods.-In hoods of the kind in which the cant-rails are hinged so as to be collapsed in a horizontal plane, the cant-rails are carried by an L-shaped rear pillar and adapted when collapsed to be stowed along the horizontal portions of the pillars. The rear quarter D, Fig. 1, comprises an L-shaped pillar C having a rearwardly extending portion C<3> and arranged to turn downwardly. To the portion C<3>, or to a bow E carried thereon, are hinged the cant-rails, the sections G, G<2> - - G<4> of which are hinged as shown in Fig. 2 in order that they may fold horizontally inwards. The front section G<4> is hinged at G<6> to a bow H adapted to be secured to a fixed roof portion A in the landaulette type of vehicle, or to a bow carried by the windscreen in other types. The hood fabric is secured continuously or at various points to the cant-rails. The hinges may be formed in linknvork which may be arranged so that all joints are broken when any one is broken. According to the Provisional Specification, the rear cant-rail sections may be pivoted directly to main hinged pillars.
Patent GB-1520225-A (GB)
Title: Thermoplastic vinyl chloride resin compositions
IPC: C08L33/04
Filed: 1977-03-25
Abstract: 1520225 Vinyl chloride polymer moulding compositions BAYER AG 25 March 1977 [27 March 1976] 12604/77 Heading C3M Impact-resistant transparent moulding compositions comprise (1) 20-90% polyvinyl chloride and (2) 10-80% of a mixture of (a) 20-100% of a thermoplastic copolymer of 30-10 parts alpha-methyl styrene, 52-62 parts methyl methacrylate and 4-14 parts acrylonitrile and (b) 0-80% of a graft polymer of 40-60 parts of a mixture of 40-60 parts styrene, 0-10 parts acrylonitrile and 40-50 parts methyl methacrylate on 60-40 parts of polybutadiene or a copolymer of butadiene with up to 30% styrene.
Patent GB-318584-A (GB)
Title: Improvements in or relating to mechanism for conveying sheets or the like
IPC: B65G13/00
Filed: 1929-04-23
Abstract: 318,584. Upson Co., (Assignees of Upson, C. A.). Sept. 6, 1928, [Convention date]. Discharging and feeding devices for endless-belt conveyers; driving-gear; roller-way conveyers.-In a drying oven for sheets of wallboard, &c., the sheets D pass from an upper rollerway conveyer down an inclined rollerway conveyer 21 on to a group of high speed rollers 26 on an inclined rollerway conveyer 25 which reverses their direction of movement and propels them towards a lower roller-way conveyer. Rollers 34 disposed above the lowest rollers of the conveyer 21 direct the front end of each sheet on to idler rollers 32 at the top of the conveyer 25. Belts may be used instead of roller-way conveyers. Specification 333,161, [Class 87 (ii), Moulding plastic &c. substances], is referred to.
Patent GB-900256-A (GB)
Title: A scoop unit for a tractor or like vehicle
IPC: E02F3/34
Filed: 1961-04-07
Abstract: 900,256. Shovelling machines. OSTRAT, M. S., and FURENES, O. April 7, 1961 [April 9, 1960], No. 12660/61. Class 68 (1). [Also in Group I] Means are provided in a tractor-mounted scoop unit to ensure that a screw spreader 23 associated with a scoop 1 is clear of the mouth of the scoop when the scoop is lowered into position for filling. The means comprise a chain 38 secured to a cross-brace of scoopsupporting arms 3 pivotally mounted on a tractor and, after passing about a pulley 39 at the top of a frame 10 rigidly secured to the tractor, to a yoke 40 secured between struts 24 pivoted with the scoop 1 about a common axis 25 between the arms. The length of the chain 38 is such as to arrest downward movement of the arms 24 and spreader 23 as the scoop completes the downward movement to a loading position. From the loading position the scoop is first swung up about axis 25 and then raised by upward swinging of the arms 3 by upward swinging of hydraulically-actuated lift levers 5 mounted on the tractor, the levers acting through links 4 on the arms 3. Initial upward swinging of the arms 3 renders the linkage 7, 8, 15 and 6 pivoted at 9 on frame 10 effective to cause rod 6 to swing scoop 1 upwards. On completion of upward swinging of arms 3, lever 5 is locked and scoop 1 allowed to swing down to a discharge position from which it is subsequently raised by actuating an hydraulic ram 18, 20. The piston-rod 20 of the ram is connected to a frame 21, 22 rigid with the frame 10. On the cylinder 18 of ram 18, 20 are rollers 19 that move freely along the frame 10 and the cylinder 18 is connected by links 16 to the linkage 7, 8, 15. For the scoop to regain the loading position the lever 5 is released and lowered whilst the ram 18, 20 is contracted.
Patent GB-1027580-A (GB)
Title: Process for the production of ª‰-carboxyethyl-substituted organopolysiloxanes
IPC: C08G77/14
Filed: 1965-03-25
Abstract: Organopolysiloxanes of the average general formula <FORM:1027580/C3/1> in which n has an average value greater than 1 and up to 3 and at least one substituent R is a b -carboxyethyl radical linked to Si and each of the remaining substituents R is Me, Ph or vinyl, are obtained by heating a b -organosilyl-a -cyanopropionic acid ester <FORM:1027580/C3/2> in which m = 1 or 2 and each R1 is Me or Et, in a strongly acid aqueous medium with either least one organochlorosilane R11aSiCl4- c and/or at least one organosiloxane of average general formula: <FORM:1027580/C3/3> R11 is Me, Ph or vinyl and at least half of the radicals R11 are Me, a has a value 71 up to 3.  Heating takes place at boiling temperature until hydrolysis and co-condensation takes place.  Examples of suitable esters are b  - (dimethylethoxysilyl) - a  - cyanopropionic acid ester and b -(dimethylmethoxysilyl)-a -cyanopropionic acid ester. The preparation of such esters is described and claimed in German Specification 1,194,415.  When the organochlorosilane is used acetic acid may be used as the reaction medium and when an organosiloxane free from Cl-Si groups is used, the reaction medium may be a mixture of glacial acetic acid and 20-38% by weight HCl.
Patent GB-980390-A (GB)
Title: Starch acylates and process for their preparation
IPC: C08B31/16
Filed: 1962-04-03
Abstract: In a process for making cross-linked starch acylates a cereal or a "root-type" starch is treated, in any order, with a cross-linking agent comprising at least one polyfunctional etherifying or esterifying agent in an amount from 0.01-10% by weight of dry starch and an acylating agent (1.0-40% by weight of starch) while maintaining the starch in granular form. If the starch is cereal starch, it is reacted with the cross-linking agent until the alkaline fluidity (as defined) is 50 c.c.-90 c.c., and it is acylated with a vinyl ester, or an anhydride of an aliphatic monocarboxylic acid having 1-18 carbon atoms.  If the starch is "root-type," the cross-linking reaction is continued until the alkaline fluidity is 30 c.c.-90 c.c., and it is acylated with a vinyl ester of the above monocarboxylic acid. The granular form of the starch is maintained throughout the process. The product has a CIV viscosity at pH 3.5 of at least 700 g.-cm. after 15 minutes, and at least 496 g.-cm. after 40 minutes. Cereal starches are e.g. corn, rice and wheat; root-type starches are e.g. potato, waxy maize, waxy sorghum, cassava.  The polyfunctional cross-linking agent may be unsaturated aldehydes e.g. acrolein, crotonaldehyde; dihaloalkanes e.g. ethylene dichloride, 1,2-propylene dibromide, 2,6-hexylene dichloride; dialdehydes e.g. glyoxal, adipaldehyde; methylol compounds e.g. dimethylol urea; epihaloalkanes e.g. epichlorohydrin, 1,2-epoxy-4-chlorobutane, 1,2-epoxy-5-bromopropane, and polybasic acid halides e.g. phosphorus oxychloride and adipyl chloride. Specified acylating agents include vinyl acetate, vinyl hexoate, vinyl stearate, acetic anhydride and propionic anydride. When vinyl esters are used, acetaldehyde formed in situ during the alkaline acylation may be utilized as an additional cross-linking agent during cross-linking with the poly-functional agent.  The process may be carried out by suspending granular starch in a polar solvent, e.g. water, alcohols or dioxan, adding an alkaline catalyst and cross-linking agent, and heating at e.g. 100 DEG  F. at pH 9-13, until the required alkaline fluidity is attained. After termination of the cross-linking reaction by e.g. adjustment of pH or by addition of sodium bisulphite, the acylating agent is added and acylation carried out at e.g. pH 7.0-12.5 and 65-115 DEG  F. Reaction is terminated by adjusting the pH to 6.0, and the cross-linked acylate is isolated by filtration or centrifugation. If acetaldehyde is utilized as an auxiliary cross-linking agent, the acylation is carried out first and the pH adjusted to below 4.0 before the addition of the polyfunctional cross-linking agent.
Patent GB-236706-A (GB)
Title: Improvements in apparatus for dispensing liquid soap for ablution purposes
IPC: A47K5/13
Filed: 1924-05-24
Abstract: 236,706. Woosnam, R. L. May 24, 1924. Soap holders. - In apparatus for dispensing liquid soap of the kind described in Specification 102,038 comprising a pivotally mounted container a having a conical upper portion the apex of which is formed with a depression having an orifice, the container is provided with an aperture into which is fitted a piece of glass b, Fig. 1, by means of a plug d screwed into a flanged socket, or with apertures f, Fig. 2, into which the ends of a glass tube b are fitted by means of plugs g.