baber/WOPTO huggingface dataset:
Patent GB-249015-A (GB)
Title: Improvements in or relating to machines for manufacturing nails from wire
IPC: B21G3/20
Filed: 1925-08-27
Abstract: 249,015. Wikschtrom, J. July 9, 1925, [Convention date]. Forging nails.-A machine for making wirenails has the point-cutters and wire-clamping jaws mounted side by side in a single pair of operating levers, whose axis of rotation is perpendicular to that of the wire fed into the machine. The tool-holding levers 5, 6, Fig. 16, have journals of substantially semicircular crosssection, operating in bearings 3, 4 in the machine frame, the lever-journals being pressed apart by springs located between the sections of a longitudinally divided shaft 8, Fig. 4. A wire-guide 9 is adapted for longitudinal movement in the end of the lever journals remote from the shaft 8, in order to convey the wire transversely of its axis from the heading tool to the point-cutters. The levers 5, 6 are provided with arms 15 whereby they are actuated by a cam-operated slide 16, Fig. 6, having a yoke 20 articulating with toggle links 21 which engage with rollers 22 on the lever arms. The rollers 22 bear on a pair of spring-pressed bars 24 pivoted on the slide 16. The clamping-jaws 10 and point-cutters 11 are mounted in the operating levers by hooked bolts 12 and are axially adjustable by screws 14. The wire is fed to the machine by a reciprocating- gripper 64, in conjunction with a locking-lever 68 for preventing retrograde movement of the wire. The wire passes through a guiding-eye in the end of the rod 9, and is introduced between the clamping jaws 10 so as to be in axial alignment with a heading-tool 41 which is reciprocated by a cam 47 and is adapted to be swung about an axis parallel to itself when the heading operation is completed. On the clamping-jaws being opened, the wire is fed forwards and is conveyed laterally so as to be located between the point-cutters 11, which, on the next operation of the machine, form the point. The completed nail is swept clear of the point-cutters, when the latter are opened, by an ejector 63, linked so as to move downwards when the heading-tool is moved about its axis.
Patent GB-1083676-A (GB)
Title: Improvements in or relating to elevators
Inventor: SKINNER NORMAN PHILIP
IPC: B65G17/12
Filed: 1963-05-30
Abstract: 1,083,676. Endless conveyers. BAGSHAWE & CO. May 28, 1964 [May 30, 1963], No. 21593/63. Heading B8A. Load carriers 30 are supported on each side (one side only visible in Fig. 4) by a pair of chains 31, 32. On one vertical run only of the conveyer, the chains 31, 32 are spaced horizontally so as to maintain the carriers 30 horizontal. At each end of the other vertical run, the two chains on each side of the load carriers pass over guide sprockets 13 on a common axle 13. Each carrier 30 comprises rods 36 (Fig. 5) carried by links 33 which are alternately joined to links 34. Abutment members 35 permit the carrier flex in one direction so as to turn around the return pulleys but maintains it from flexing in the opposite direction.
Patent GB-1381785-A (GB)
Title: Vehicle bumper mounted on a shock absorber
IPC: B60R19/32
Filed: 1972-05-09
Abstract: 1381785 Shock absorber piston valves; valves FICHTEL & SACHS AG 9 May 1972 [15 May 1971] 21622/72 Headings F2S and F2V A shock absorber piston 42 is provided with a relief valve comprising a passage 43 and a valve member 44, the valve member being moved by fluid flowing through the passage from a position of maximum closing effect to positions of increasingly less closing effect, the force which resists movement of the valve member being substantially constant. In Fig. 4, and in Fig. 5 (not shown), the valve member provides its own restoring force, whereas in Figs. 3 and 6 (not shown), the valve member is backed up by disc springs, which may be prestressed. The spring is used over the range AB of its force-deflection characteristic shown in Fig. 9 so as to provide a constant force. In Figs. 7, 8 (not shown), the valve member is backed up by conical helical springs whose force-deflection characteristic (Fig. 10, not shown) is a straight line at a slight angle to the horizontal. The shock-absorber (Fig. 3, not shown) mounts a vehicle bumper. The construction of the relief valve ensures that the damping force is constant over the whole piston stroke regardless of the impact velocity (graphs in Figs. 1 and 2, not shown).
Patent GB-1284947-A (GB)
Title: Improved lyophilized erythrocyte composition
IPC: A61K35/18
Filed: 1970-05-05
Abstract: 1284947 Erythrocyte preparation; immunological reagent ABBOTT LABORATORIES 5 May 1970 [27 May 1969] 21681/70 Addition to 1244344 Heading B1X An aqueous erythrocyte preparation which can be lyophilized and reconstituted for use comprises a suspension of 0.1% to 10% by volume erythrocytes which have been pretreated with (a) a minor volume of pyruvic aldehyde relative to their volume, and (b) a minor volume of formaldehyde relative to their volume, the suspension also containing 0.1% to 1% by weight blood serum albumin and 5% to 30% by weight of sucrose, lactose or a mixture thereof. The erythrocytes may be rabbit, rat, pigeon, sheep, chicken or human cells. The serum albumin may be bovine, rabbit or chicken. The erythrocytes to be used in the preparation may be stored in pretreated form, before or after coating with antigen and/or potentiation as in Parent Specification. In an Example the pretreated erythrocytes are coated with bovine serum albumin before use in the preparation.
Patent GB-532695-A (GB)
Title: Improvements in or relating to organic derivatives of cellulose
IPC: C08J9/00
Filed: 1939-07-26
Abstract: 532,695. Cellulose derivatives and articles made thereof. BRITISH CELANESE, Ltd. July 26, 1939, Nos. 21704 and 21705. Convention dates, July 26, 1938 and Aug. 24, 1938. [Class 2 (ii)] Porous organic derivatives are prepared by dissolving the cellulose derivative under the action of heat and pressure in a mixture of a volatile solvent for the cellulose derivative and a liquid that at normal temperature and pressures is a non-solvent, such mixture having little or no solvent action at normal temperatures and pressures, and then releasing the pressure quickly to allow the volatile solvent to volatilize. Particles or flakes of cellulose derivative that are readily soluble may be obtained by grinding the porous mass after drying. Suitable cellulose derivatives include cellulose acetate, formate, propionate and butyrates and ethyl, methyl and benzyl cellulose ; suitable solvents include acetone, methanol, ethanol, ethylene dichloride, and diacetone ; suitable non-solvent liquids include water, kerosene and naphtha. Fillers, such as cotton, linen, threads, fibres, scrap fabric of regenerated cellulose, glass wool, spun rock, asbestos, cork, diatomaceous earth, mica and sawdust, fire retardants, stiffening materials, ground glass, fullers earth, plasticizers, dyes, lakes and fire retardants may be added to the cellulose derivative before solution. The products may be formed into sponges, porous discs, mats, bars, sheet or cakes, and used as insulating materials in refrigerators, aeroplanes, automobiles, and houses or as filters. Products derived from cellulose esters may be modified by saponification such as in aqueous ammonia, caustic soda or a quaternary amine to yield sponges of regenerated cellulose having absorbent properties. The pressure used in the obtaining of the solution may be obtained by pumping air into an autoclave followed by releasing the air pressure or releasing the material into the air or into a shaping tube ; alternatively, pressure and release may be obtained by moving a piston in a cylinder. In an example, cellulose acetate waste yarn is soaked in a mixture of acetone and water, the mass subjected to heat and pressure and the pressure quickly released on the solution, so as to obtain a porous cellulose acetate which may be saponified in aqueous trimethyl benzyl ammonium hydroxide or which, after drying, may be ground to yield a flaky cellulose acetate.
Patent GB-665041-A (GB)
Title: Improvements in electrically heated sterilising and water heating apparatus
Inventor: WOOLLEY JOHN WILLIAM
IPC: F22B1/28
Filed: 1949-08-22
Abstract: 665,041. Heating water by electricity. ELECTROBLOC, Ltd. July 26, 1950 [Aug. 22, 1949], No. 21717/49. Class 39(iii) A steam generator for sterilizing purposes comprises an insulated chamber b containing an electrically heated metal heat-storage block e, means for feeding water to the chamber b in which it is in contact with the block e, and means for leading steam from the chamber b, a hotwatre tank c deriving heat from the chamber b and also delivering water thereto. The chamber b and tank c are arranged side by side in a casing a above which is a sterilizing chamber g connected by a pipe h with the chamber b. Water is led to the chamber b from the tank c via a pipe m, the tank c also delivering water to, and receiving water from, an elevated feed tank k. The tank c may contain an electric immersion heater j. Specification 4790/10, [Class 39(iii)], is referred to.
Patent GB-500051-A (GB)
Title: Improvements in and relating to caravans and like vehicles
IPC: B60P3/34
Filed: 1937-08-06
Abstract: 500,051. Caravans ; folding vehicles. PARK. W. M. Aug. 6, 1937, No. 21723. [Class 108(i)] A caravan or like vehicle has one of the side walls or a major portion 3 thereof horizontally hinged to the main structure so as to be swingable outwardly and downwardly to provide an extension of the floor 5, a sliding roof 13 in the form of ,a panel adapted to cover the floor extension, and vertical side flaps 10, 10<1> also hinged to the main structure to support the sliding roof over the floor extension, the respective edges of the various members being adapted to interengage to provide a rigid extended structure or structures. The lower edges of the walls 10, 10<1> bf the trailer caravan shown carry anglemembers 11, Fig. 3, adapted to slide beneath and engage angle-members 12 secured to the side edges of the floor portion 3 which is supported when extended by legs 9, 9<1>. The sliding roof is provided at its side edges with channels 14 carrying ball-bearings 14<1> and co-operating with guide surfaces 15, Fig. 2, secured beneath the permanent roof 8 and with guide surfaces 17 on the upper edges of the walls 10, 10<1> which are in alignment with the guides 15. when the walls are extended. Additional rigidity is obtained by anglemembers 18, Fig. 3 on the walls engaging hook-members 19 on the sliding roof. The extended structure may be completed by a side curtain or a folding door or doors hinged to the walls, and may be separated from the main structure by a curtain or wall, while a door may be provided in the rigid side wall of the caravan opposite the extendible structure.
Patent GB-790932-A (GB)
Title: Improvements relating to transistor oscillator circuits
IPC: H03K3/282
Filed: 1955-07-27
Abstract: 790,932. Transistor oscillator circuits; keying carrier frequencies. GENERAL ELECTRIC CO. July 27, 1955 [July 27, 1954], No. 21724/55. Classes 40 (5) and 40 (6). An oscillator comprises a number of base input transistor stages connected in cascade, a fixed inductance connected between the input electrode and common electrode of the first transistor, a variable positive feedback path from a later stage to the input of the first stage and variable resistances connected between at least some of the transistor electrodes and their supply leads, the arrangement being such that by varying the resistances and the feedback the frequency and waveform of the oscillations may be varied. Fig. 1 shows three common emitter stages connected in cascade with a variable feedback resistor 29 connected to an inductance 16 in the input circuit of the first transistor. With slight feedback the output oscillations can be of sinusoidal form but by varying the resistances and feedback the waveform may be squared as a result of limiting in the transistors. Further adjustment can produce a sawtooth output wave while still further adjustment can produce interrupted oscillatory waves such as are shown in Figs. 3 and 6. To produce these the property of a transistor that it produces a non-phase-reversed signal at its output when the input potential exceeds the collector potential is used.
Patent GB-536088-A (GB)
Title: Process for the improvement of artificial fibres manufactured of protein substances
IPC: D06M11/24
Filed: 1939-07-27
Abstract: 536,088. Artificial fibres. SANDOZ, Ltd. July 27, 1939, No. 21861. Convention date, Nov. 14, 1938. [Classes 2 (ii) and 15 (ii)] Artificial protein fibres containing chromium oxide are obtained by treating fibres.formed from solutions of casein or other protein substances with compounds of chromic anhydride, such as sodium or potassium bichromate, followed by treatment with reducing agents such as sodium bisulphite, sulphurous acid, or sodium thiosulphate. The treatment increases the strength of the fibres and their resistance to pulling, friction, wear, boiling water, and hot ironing, and also increases the fastness of dyeings with acid, chrome, and direct dyestuffs. Examples are given of dyeings with acid and with chrome dyes.
Patent GB-614668-A (GB)
Title: Improvements in or relating to surgical and like masks
IPC: A41D13/11
Filed: 1946-07-22
Abstract: 614,668. Surgical, &c. masks. MOSS, E. W. (Germ-Ex Mask Co., Ltd.). July 22, 1946. No. 21862. [Class 81 (ii)] A surgical or like mask comprises a fabric pouch having an elastic edge fitting under the chin, a flexible and ductile wire member hemmed in the upper edge, and bows 7 adapted to fit over the ears and pivotally connected to the ends 5 of the wire member. The pouch may be formed of a central strip 1 of several layers of surgical gauze secured to side panels 2 of a soft fine fabric with overlaid tapes 3.
Patent GB-716797-A (GB)
Title: Improvements in or relating to hose end fittings
IPC: F16L33/01
Filed: 1951-09-19
Abstract: 716,797. Hose couplings. STRAUS, M. Sept. 19, 1951 [Dec. 11, 1950], No. 21993/51. Class 99 (1). In an end fitting for a reinforced hose in which the reinforcing layer 2 is separated at the hose end from the inner and outer layers 1, 3 and clamped between the conical surfaces of a sleeve 4 and clamping ring 7, the said surfaces 4a, 7a are stepped or serrated. The ring 7 is clamped by a bush 6 screwing into the sleeve, and an insert 8, carrying a union nut 10, is screwed into the bush. The end of the layer 1 is compressed between converging tapered surfaces 9 on the bush and insert.
Patent GB-888027-A (GB)
Title: Preparation of high quality solid olefin polymers
Filed: 1960-06-23
Abstract: Solid homopolymers and copolymers of 1-alkenes are made by polymerizing a monomer, or mixture of monomers comprising a major proportion of a 1-alkene in the presence of an inert liquid hydrocarbon, and a finely divided solid polymerization catalyst which is insoluble in the hydrocarbon to form a solid polymer as a solution in the reaction mixture, flashing the solution to separate at least a major proportion of any excess monomer as a vapour from the solution, physically separating the solid polymerization catalyst from the solution, extruding the solution, water quenching the extruded solution to solidify the extrudate, steam stripping the solidified extrudate at subatmospheric pressure to remove residual hydrocarbon medium, and recovering a solid 1-alkene polymer.  The solid polymer may be melted and re-extruded.  Specified 1-alkenes are ethylene, propylene, 1-butene, 1-pentene, 1-heptene, 1-octene, 1-dodecene, 1-tetradecene, 1-hexadecene, and mixtures.  The 1-alkenes may also be copolymerized with other monomers such as butadiene, isoprene, chloroprene, piperylene, cyclopentadiene, tetrafluoroethylene, or perfluorovinyl chloride.  The solid polymerization catalyst is preferably selected from (1) metals or oxides on supports, e.g. nickel on charcoal or chromia on silica-alumina, (2) metal oxides admixed with aluminium trialkyls (3) the reaction product of a metal halide and an organometallic compound, e.g. titanium tetrachloride and an aluminium trialkyl, or (4) a metal halide in a lower valency state and an organometallic compound, e.g. titanium trichloride and an aluminium trialkyl.  The Specification contains an extensive list of such catalysts.  The exemplified catalyst is a reaction product of sodium metal and molybdenum on alumina.  The monomers polymerized are generally purified.  The physical separation of the catalyst is generally effected by filtration through a cellulosic sheet.  It may also be effected in a centrifuge or hydrocyclone.  The monomers flashed, and the solvents obtained during steam-stripping are all recovered, purified, and reused in the process.  The whole process is effected continuously and one method of carrying out the process is indicated in a flowsheet diagram.  Specification 748,634 is referred to.
Patent GB-1507266-A (GB)
Title: Apparatus for supplying printing ink to a printing unit
IPC: B41F31/02
Filed: 1976-05-27
Abstract: 1507266 Fluid-pressure actuated syringes PHILIP MORRIS Inc 27 May 1976 [10 June 1975]  22125/76 Heading F1R [Also in Division B6] An ink dispenser comprises a two compartment casing, compartment 16 housing a removable ink cannister 26 and having a removable cap 24, and compartment 18 having a piston 52 on a shaft 54 which shaft is movable to and fro by compressed air, and is also joined to a plunger 50 which pushes ink out along pipe 28 to a printing unit. When cannister 26 is nearly empty and piston 52 has passed orifice 80 then the compressed air exits via orifice 80 to actuate a pressure sensitive visual indicator.
Patent GB-255670-A (GB)
Title: Combined circular air or water cushion and urinal
IPC: A61G9/00
Filed: 1925-09-04
Abstract: 255,670. Richardson, E. Sept. 4, 1925. Bed-pans comprise a bag with a stoppered outlet B, a narrowed portion C, and a diverging mouth D continued as two flaps E, F, the shorter flap E being affixed to a circular air or water cushion G.
Patent GB-1352611-A (GB)
Title: Character recognition systems
IPC: G06V30/224
Filed: 1971-04-19
Abstract: 1352611 Character recognition DATA RECOGNITION CORP 19 April 1971 [24 Feb 1970] 22170/71 Heading G4R In a character recognition system the image of a character on a document travelling past a viewing window is swept several times over a line of photo-sensors. The outputs of the sensors are processed to provide a sequence of signals each indicative of the distribution of character parts (black) and background (white) in a respective horizontal strip of the area of the document currently in the window. The sequence of signals passes to each of n identification units. Each unit is so arranged that it provides an output only when the corresponding sequence of signals is received, i.e., when the corresponding character is at a certain position in the window. The document 12 carries numerals in E7B font and moves over window 17. The image of the portion of the document in the window is swept over photo-sensors 14 by rotating mirrors 26. A numeral is scanned several times as it traverses the window. There are 22 photosensors 17, each scanning a vertical strip of the window area. Each photo-sensor 14a, Fig. 4, delivers a signal BSOm (m = 1-22) to analog comparator 42. Signal BSOm is also attenuated at 41 to provide a second signal ASOm to the comparator. The comparator comprises 58 differential amplifiers and compares signals BSOm from certain of the photo-sensors 14a with signals ASOm from others of the photosensors. The comparator provides outputs dependent on the blackness of the character relative to the background. The outputs ACOc, BCOc (c=1-58) of the comparator are fed to gating unit 43 which also receives clock pulses from generator 66. Generator 66 is triggered once during each scan of the window area by the output of one of the photo-sensors in response to an intense flash of light as a reflecting lip (34, Figs. 2 and 3 (not shown)) at one edge of the window is scanned. The generator provides a rapid sequence of clock pulses when triggered so that gating unit 43 is enabled a plurality of times during each scan of the window. This has the effect of dividing the scanned area 17 into a number of horizontal strips 21a, Fig. 5. At each clock pulse one of 11 gates 40, 44-53 in the gating unit provides an output representing a corresponding one of 11 possible patterns of black and white in the strip under consideration. The sequence of outputs of gating unit 43 corresponding to a full scan of the window uniquely represents one of the numerals 0-9 when that numeral alone lies in the window. The sequence is recognized by a corresponding one of ten identification units 54-63. Each unit consists of a series of latches so arranged that each can be triggered only when the preceding latch has been triggered. Consequently each unit provides an output, e.g. to a printer, only when fed with a corresponding sequence of signals.
Patent GB-830369-A (GB)
Title: A process for the preparation of secondary alcohols
IPC: C07C29/06
Filed: 1958-07-10
Abstract: Secondary alcohols containing less than 5 carbon atoms per molecule, particularly isopropyl alcohol, are separated from a reaction mixture obtained by the absorption of the corresponding alkenes in aqueous sulphuric acid by a process comprising flash vaporizing the reaction mixture by introducing it tangentially, together with steam, into a flash vessel, at such a rate that the wall of the flash vessel is entirely or almost entirely moistened. The flash vessel is preferably cylindrical and preferably also tapers conically towards the bottom. Preferably the process is used in conjunction with the process disclosed in Specification 715,483 in which sulphuric acid obtained from the stripping zone is recycled, without concentration but with dilution, if necessary, to the absorption zone.
Patent GB-1353244-A (GB)
Title: Security paper
IPC: B60T13/58
Filed: 1971-04-19
Abstract: 1353244 Laminated paper SODECO-SOC DES COMPTEURS DE GENEVE 19 April 1971 [17 Feb 1970] 22256/71 Heading B5N [Also in Division B6] Security paper from which valuable documents, e.g. cheques, bank notes, or credit cards can be made comprises a laminate 21 of two layers of paper having at least one strip arranged therebetween, the strip providing at least one rectilinear track 22 parallel to one of the edges of a document 26 to be formed from the paper, and the or each track having a plurality of like dimensional areas 23, 23a-23d, each having a like quantitatively detectable physical characteristic, the spacing between adjacent areas being less than half the length of the short edge of the document (or, if the edges are of equal length, any edge thereof), and two or more of the areas of the or each track being positioned outside the normal fold lines 27, 28, 28a, 28b of the document. The strip may be a plastics film and the track may be formed by metallized areas on the film. The film may be metallized on both sides to form equivalent areas of overlap (Figs. 1, 2, not shown) or on one side only (Figs. 3-5, not shown). The areas of like dimension are detected using capacitance measurement techniques.
Patent GB-865616-A (GB)
Title: Improvements in or relating to the manufacture of polymeric materials
Inventor: CHAPMAN JOHN FREDERICK
IPC: C08J9/00
Filed: 1958-07-11
Abstract: Cellular polyurethanes are obtained by interacting a polyisocyanate, a hydroxyl group containing material, an ethyleneoxide condensate of a fatty alcohol containing at least 12 carbon atoms, and 5-8% water relative to the hydroxyl group containing material.  Examples of suitable reactants are given, the hydroxyl material being a polyether, polyester, or a polyesteramide.  An organic phosphate may also be present. Specification 733,624 is referred to.ALSO:Cellular polyurethanes are obtained by interacting a polyisocyanate, a hydroxyl group containing material, an ethylene oxide condensate of a fatty alcohol containing at least 12 carbon atoms, and 5-8% water relative to the hydroxyl group containing material.  Examples of suitable reactants are given, the hydroxyl material being a polyether, polyester or a polyesteramide.  A phosphate may also be present.  Specification 733,624 is referred to.