baber/WOPTO huggingface dataset:
Patent GB-1007176-A (GB)
Title: Apparatus for conditioning, particularly deflaking, fibre pulps
IPC: D21B1/12
Filed: 1962-07-06
Abstract: Apparatus for conditioning, particularly deflaking, a fibre-pulp comprises a pair of relatively rotatable cylindrical working tools having opposed working faces and means for passing the pulp between the working faces both of which are provided with recesses lying at least approximately in coaxial rings and the rings of recesses on one working face being staggered in the direction of pulp movement with respect to the rings of recesses on the other working face and dimensional such that as the relation rotation occurs between the tools, the recesses of each ring of each working face (with the exception of the upstreammost ring and the downstreammost ring of all the rings on both working faces) at least intermittently overlap the recesses in two rings on the opposed working face.  The recesses may be cylindrical or conical and arranged in spirals.  Further, the recesses may be provided with wear-resistant, longitudinally gapped, sleeves. The inlet to the apparatus may be provided with pre-slushing means.
Patent GB-1287167-A (GB)
Title: Improvements in and relating to a cellular structure
Inventor: COSTA CHARLES
IPC: E04C3/29
Filed: 1970-05-29
Abstract: 1287167 Beams COMMISSARIAT A L'ENERGIE ATOMIQUE 29 May 1970 [30 May 1969] 26134/70 Heading E1W [Also in Division F2] A damped stiffened constructional element comprises a series of interconnected partitioning elements 10, 11 which define a series of polyhedric cells; each cell contains a box 7 having one open face at which connection is made to the cell wall, and a damping means 8 is disposed between the box and the cell. The cells may be cuboidal or of hexagonal honeycomb form and the boxes may be parallelepipedal, frusto-conical, pyramidal or cylindrical. The damping means may be a visco-elastic material, e.g. epoxy resin, polyurethane foam, which is poured or injected around the boxes, or a particulate ductile or plastics material, or sand. As shown in Fig. 6, viscoelastic material 8 is disposed between springs 13 and the box 7.
Patent GB-1092276-A (GB)
Title: Lighting units
Inventor: KEELING JOHN ASHLEY
IPC: F21V5/02
Filed: 1964-06-24
Abstract: 1,092,276. Fresnel lenses. IMPERIAL CHEMICAL INDUSTRIES Ltd. June 3, 1965 [June 24, 1964; Sept. 23, 1964] Nos. 26140/64 and 38797/64. Heading G2J. [Also in Division F4] In a street lighting unit of the type comprising a trough shaped transparent body having a top cover and one or more tubular light sources mounted inside the body parallel to the long flat side walls thereof, a refractor plate having a plurality of light directing prismatic formations on one surface thereof is attached to each of the long flat side walls, each plate being inclined to the vertical away from the light source by an angle of from 8‹ - 20‹ and being so constructed that the maximum light intensity of the downwardly refracted light occurs at angles of from 60‹ to 85‹ to the vertical. The light sources are mounted so that the vertical distance between the lowest prismatic surface and the lowest point on the light emitting surface does not exceed 30% of the distance between the highest and lowest points on the light emitting surface, and each prism is so shaped that the angle between its rising face and the normal to the plane surface of the plate is substantially equal to, or up to 25‹ less than, the inclination to the normal of the least refracted ray within the prism from the lowest point on the light emitting surface. The transparent body and the refractor plates may be made from polymethyl methacrylate or the transparent polymers and copolymers of vinyl chloride. The Specification gives detailed numerical data for constructing plates with 42, 27 and 70 prisms respectively.
Patent GB-728741-A (GB)
Title: Improvements in and relating to photographic reflex cameras
IPC: G03B19/12
Filed: 1951-11-09
Abstract: 728,741. Photographic reflex cameras. PECKHAM, C. G. Nov. 10, 1952 [Nov. 9, 1951], No. 26289/51. Class 98 (1). In a photographic reflex camera the movable mirror of the reflex focusing arrangement has an area less than the cross-sectional area, in the same plane as the mirror, of the light rays from the camera lens, so as to form an image of part of the field of view only, on the focusing screen. When not in its operating position the mirror may be accommodated above the lens opening in the front wall of the camera. The mirror 25 (Fig. 5) is carried on the parallel framework 34 and when in position for focusing is inclined at 45 degrees on the optical axis, opposite the opening 30, and reflects the central portion of the light from the lens onto the screen 26. The optical path from the lens to the screen 26 is equal to that from the lens to the sensitive material, and slight adjustments in the position of the screen may be made to effect this by means of screw 62. The screen is viewed by means of a mirror placed at 45 degrees above it which reflects the image into a magnifying eyepiece mounted on top of the camera casing parallel to the optical axis. In its " up " position the mirror closes the end of a hood 53 extending downwards from the screen. The framework carrying the mirror is moved between its two positions by a press-button 39 which operates a fork 47, the latter engaging pins 48 on the frame. The over-centre spring 35 completes the movement of the frame into either of its positions. Mechanism is described for interlocking the frame with a shutter release button so that the shutter cannot be operated when the mirror is in its focusing position. The camera may be fitted with a direct-vision viewfinder comprising two hinged frames mounted on top of the camera case. The rear frame may be mounted on a lever connected to the lens focusing mechanism so that the lever is tilted as the camera is focused, thus providing automatic parallax correction. A light trap for the slide of a plate holder is also described. A detachable lens hood having a filter permanently incorporated in it may be provided.
Patent GB-601876-A (GB)
Title: Improvements relating to methods of preparing zirconium oxide
IPC: C04B35/48
Filed: 1945-10-09
Abstract: Zirconia for use as an opacifier is produced by spreading a layer of a zirconium-carbon-oxygen intermediate such as produced according to Specifications 535,011 and 544,823, of less than one inch in thickness on a hearth of heat-insulating porour refractory material, e.g. Armstrong's Insulating Firebrick No. A-23, provided with a smooth, hard thin layer of refractory material, igniting the intermediate at spaced points, e.g. by adding small amounts of already burning material, and allowing burning to occur without external application of heat.  The smooth hard layer, of 1/4 inch, or preferably 1/8 inch or less, in thickness, is produced by the application of cement which may be that used for cementing the refractory bricks together.
Patent GB-997585-A (GB)
Title: Metal catalysts
IPC: B01J23/42
Filed: 1962-07-10
Abstract: A method of preparing a noble metal catalyst comprises impregnating a carrier selected from aluminium oxides and hydroxides, transitional aluminas, aluminium silicates, aluminium gels, magnesia gels, ThO2, MgO and ZrO2 with a compound of Pt, Pd, Ru, Ro, Os, Ir, Au or Ag and 1-15% based upon the weight of the carrier of an acid of phosphorus or ammonium phosphate and heating the resulting material in an oxidizing atmosphere to a temperature from 300-1000  DEG C. and in p the presence of a reducing agent which is introduced before or during the heating at 300-1000  DEG C.  Additionally the catalyst may contain a promoter, e.g. Na, Pb, K, Mg, Ca, Sr, Ba, Ti, Cr, Zr, Fe, Co, Ni, Cu, Mn, Zn, Cd, Ge, Su, Cs, Ga, V, Sc, and the rare earth metals.  Preferably the catalyst has a surface area of 75 m.2/gm.
Patent GB-713552-A (GB)
Title: Improvements in or relating to vinyl halide polymers plasticized with dialkyl monoaryl phosphates
IPC: C08K5/523
Filed: 1951-11-13
Abstract: Vinyl halide polymers are plasticized with a dialkyl monoaryl phosphate ester of the formula <FORM:0713552/IV (a)/1> in which each R1, R2, R3 or R4 is hydrogen or alkyl and the sum of the total number of carbon atoms in each of the combinations R1 + R2, and R3 + R4 does not exceed 19 and the total number of carbon atoms in R1, R2, R3 and R4\t together is at least 7, and R5 is aryl.  The phosphate ester may be used alone or in combination with one or more conventional plasticizers.  The polymers may be polyvinyl chloride, polyvinyl bromide, polyvinyl fluoride, and copolymers of vinyl chloride with vinylidene chloride or vinyl acetate, propionate, butyrate or benzoate, or methyl, ethyl, propyl, butyl or allyl acrylate and the corresponding esters of methacrylic acid, or styrene, o-chloro-styrene, p-chlorostyrene, 2, 5-dichlorostyrene, 2, 4-dichlorostyrene, p-ethylstyrene, divinyl benzene, vinyl naphthenate, alpha-methylstyrene, butadiene, chloroprene, acrylic acid amide, acrylic acid anilide, acrylic acid nitrile, or the methyl, ethyl, propyl, butyl, amyl, hexyl, heptyl, octyl, allyl, methallyl or phenyl esters of maleic, crotonic, itaconic or fumaric acid.  In the copolymers either part or all of the vinyl chloride may be replaced by another vinyl halide.  Specified plasticizers are 2-ethylhexyl methyl phenyl phosphate, 2-ethylhexyl sec-butyl para-chlorophenyl phosphate, n-octyl n-butyl phenyl phosphate, 2-ethylhexyl isobutyl phenyl phosphate, 2-ethylhexyl n-butyl phenyl phosphate, 2-ethylhexyl sec-butyl cresyl phosphate, di(2-ethylhexyl) phenyl phosphate, 2-ethylhexyl capryl phenyl phosphate, 2-ethylhexyl 2-butyloctyl cresyl phosphate, n-butyl sec-tetradecyl phenyl phosphate, and n-hexadecyl isopropyl phenyl phosphate.  Conventional plasticizers mentioned are di(2-ethylhexyl) phthalate, dibutyl phthalate, tricresyl phosphate, alkyl diaryl phosphates, tri(2-ethylhexyl) phosphate, dibutyl, sebacate, dioctyl adipate and alkyl benzyl phthalates.  Sheets of the plasticized vinyl halide polymer may be used for food packaging.
Patent GB-245240-A (GB)
Title: Improvements in variable electric condensers
Filed: 1924-11-07
Abstract: 245,240. Sterling Telephone & Electric Co., Ltd., and Jones, R. C. Nov. 7,1924. Condensers comprise three or more parts arranged one above the other with the several sets of moving plates on a common spindle, in combination with contact studs connected with the respective sets of plates and a rotary switch moving over the studs to connect the several parts of the condenser either singly or in pairs in series or parallel to the terminals. The three sets of fixed plates 4 - - 6 are mounted on pillars 3 between plates 1, 2 and the movable plates 7 - - 9 are on a metal spindle 10 which connects them electrically together. Three rows of contact studs 13 are arranged on either the plate 1 or the plate 2, the studs in each row being connected together and to a set of fixed plates. A switch arm 15 is mounted on a sleeve 14 loose on the shaft 10 and comprises three springs bearing respectively on the three rows, so that in one position all three sets of fixed plates are connected in parallel in the circuit, in any one of three other positions, any two of the sets may be connected in parallel, and in any one of three further positions any one set may be singly connected, the number of fixed plates in the sets differing from one another. One of two tail pieces on the switch arm engages a metal segment 16, and the other carries a stud 17 engaging recesses 19 or corrugations in a second metal segment 18 to retain the switch arm in an operative position. On a non-circular part of the sleeve 14 is a switch handle 20 moving over a graduated disc 21 indicating the maximum capacities of the condenser in its several connections. The switch handle may be slotted for viewing the maximum capacity for a particular position of the switch, while the segment 16 and spindle 10 are connected to the condenser terminals. Any number of sets of plates may be employed, and if the studs are on the base plate, the switch arm is fastened to a spindle passing through the condenser spindle. The sets of moving plates may be insulated from one another and connected to contact studs, while for series connection the switch must join one set of plates of one part to one set of the other part and the other two sets to the respective terminals.
Patent GB-278193-A (GB)
Title: Improvements relating to prepayment meters
IPC: G07F15/06
Filed: 1926-10-26
Abstract: 278,193. Chamberlain & Hookham, Ltd., and James, S. Oct. 26, 1926. Electricity &c., supplying by meter; mechanism for prepaying rent of meter. - Relates to prepayment meters in which the commodity is supplied on a two part tariff or a fixed rental charge is added to the price of the commodity and in which two measuring devices, operating at a variable and a constant rate respectively, are provided. According to the invention, two interconnected epicyclic mechanisms are employed, one receiving motion from one measuring device and the coin actuated mechanism and the other from the other measuring device and the first epicyclic mechanism, together with means for actuating a switch, valve or the like. As applied to an electricity meter, a meter a, operating according to the consumption, drives one sun wheel e of an epicyclic mechanism, the other sun wheel f being driven by a coin actuated mechanism c. The planet i carried by an arm h drives through gearing j, k, l one sun wheel m of a second epicyclic mechanism, the other sun wheel n of which is driven by a metering device b operating at a constant rate, such as a constant speed motor or a clock. The wheels m, n through a planet wheel p rotate an arbor o having an arm r acting on the controlling element d of a switch releasing device, such as described in Specification 270,467. The arbor o may have a pointer s or number disc for indicating the number of prepaid coins or the value of the unconsumed commodity.
Patent GB-442299-A (GB)
Title: Pistons and piston-rings for fluid-pressure engines
IPC: F16J9/06
Filed: 1934-09-18
Abstract: 442,299. Pistons. WELLWORTHY, Ltd., HOWLETT, J. W., and BLACKITH, F., Stanford Road, Lymington, Hampshire. Sept. 18, 1934, No. 26776. [Class 122 (i)] A piston-ring 16 and its expanding spring 15 are housed in an eccentric groove whereby the piston is biassed in a radial direction preferably at right angles to the gudgeon pin axis to prevent slap. The bottom of the groove may be notched to receive the bends of the wave spring, the depth of the notches being greatest where the depth of groove is least. Such notches may be defined by spaced strips in the groove secured or not to the piston.
Patent GB-989317-A (GB)
Title: Ignition system having a magnetically actuated vacuum switch
IPC: F02P3/12
Filed: 1963-07-08
Abstract: 989,317. Ignition systems. CLEVITE CORPORATION. July 8, 1963 [July 19, 1962], No. 26900/63. Heading F1B. The invention relates to ignition systems comprising a voltage source 20, a magnetically responsive vacuum switch means 34 disposed in series between the voltage source and the sparking member 36 and a magnet associated with the switch to cause operation of the switch. The invention is particularly applicable to internal combustion engine ignition systems comprising a piezo-electric generator as the voltage source. As shown the switch means is a magnetically responsive reed type vacuum switch. It may be operated by a magnet 42 mounted on the engine flywheel or the switch may be mounted on the engine flywheel. In Fig. 3 both the switch and the magnet are stationary and the switch is operated when a window 46 in the rotary shield 44 is in the appropriate position. There may be a plurality of magnetically responsive switches each connected to an associated sparking plug. Specifications 918,925 and 967,649 are referred to.
Patent GB-501990-A (GB)
Title: Improvements in or relating to heels for boots and shoes
IPC: A43B13/34
Filed: 1937-10-06
Abstract: 501,990. Heels for boots and shoes. SMALL, L. F. Oct. 6, 1937, No. 27072. [Class 17 (ii)] One or more pieces of rubber or similar springy material extending right across the heel transversely but only partly through the heel longitudinally rearwards from the breast face are inserted in a heel to enable the heel to rock on a resilient fulcrum and to soften pressure transmitted to the shoe sole in the region of the upper forward edge of the heel. A lift comprising a resilient front section and an interlocking rear section of harder material may be placed in the heel e.g. under a top lift. Alternatively, a complete lift of rubber may be inserted, vulcanized so as to be resilient at the front and with decreasing resiliency towards the rear. As shown, a lift 2 comprising a front resilient section 3 and harder rear section 4 is inserted under a top piece 9. The section 4 has a hole 16 therein in line with a hole 10 in the heel 1 and through which cord is passed with the projecting ends splayed out on the under side between the top lift 9 and lift2 to form a grip for a securing nail or screw 15 for the top lift. The projecting upper end of the cord may be similarly splayed out and gripped between the heel and shoe to grip a heel-attaching screw 14. The lift 3 may have a backing piece of material applied to it to hold the sections together. Reference has been directed by the Comptroller to Specifications 1412/05, 21167/08, [both in Class 17], 100,451, and 153,039, [both in Class 17 (ii)].
Patent GB-1323214-A (GB)
Title: Chair for use in dentistry
Inventor: NERI V
IPC: A61G15/02
Filed: 1971-04-19
Abstract: 1323214 Dental chairs V NERI 19 April 1971 [17 April 1970 21 July 1970] 27077/71 Heading A4J In a dental chair the back-rest is slidable along angularly-adjustable guides and the seat is also slidable longitudinally, and these two members are moved towards or away from each other as the back-rest is moved angularly, so as to minimize relative sliding movement between these members and the patient's body. In one embodiment the movements of the members are arranged to keep the patient's head in the same vertical line. In the form shown, a main transverse support member 7 for the chair structure is mounted on diamond linkages 3..5' for height adjustment by an electrically-driven screw connecting the pivots 4, 4'; the bottom ends of the links 3, 3' are formed with inter-engaging teeth 3a, 3a', to co-ordinate the movements of the links, and the top ends of the links 5, 5' are similarly connected. The support member 7 has fixed to it a frame 12...15 formed with bearings 20 for sliding support of bars 21 fixed to a framework 24 which carries the seat cushion. Hinged at 26 to the rear ends of frame members 12 are tubular members 27 on which slide members 28 fixed to a frame 29 carrying the back-rest cushion. An electric motor 19 drives a screwthreaded shaft 18 mounted in the members 13, 14 of the support frame and engaging a nut 35 which is connected by links 32 to arms 30 on the back-rest guide members 27 and by links 37 to the back-rest supporting members 28 so that as the back-rest is moved angularly downwards it is also moved towards its hinge axis. During this movement the seat framework 24 is moved rearwards by a nut on an oppositely-threaded front part of the shaft 18. In a further form, Figs. 6-8 (not shown), the frame members 12 are slidably mounted on the main support member 7 and the latter carries a nut (48) on the screw-threaded shaft 18 so that when the latter is rotated to move the seat and backrest the whole assembly of these members is moved longitudinally on the support member and as a combined result the patient's head moves only in a vertical line.
Patent GB-889676-A (GB)
Title: Water insoluble films
IPC: D01F6/14
Filed: 1960-08-04
Abstract: A composition comprises the reaction product of from 85 to 90 parts polyvinyl alcohol with from 10 to 15 parts of a periodate-oxidized polysaccharide.  The term "periodate-oxidized polysaccharide" means those having from 25 to 98% of the available hydroxy groups converted to aldehyde groups by the periodate oxidation; they may be obtained in solution by adding the dry periodate-oxidized polysaccharide, in portions, to 0.1 N aqueous Na2HPO4 with stirring.  Specified polysaccharides are wheat and potato starch, cellulose, dextrins and dextrans.  The product may be cast and dried to form a film. The reaction may take place in an aqueous medium in the presence of 2 to 15% of an acid catalyst, e.g. formic or acetic acid or less preferably, sulphuric acid and zinc chloride.
Patent GB-911145-A (GB)
Title: Underthread controlled stop motion arrangement in a sewing or embroidering machine
IPC: D05B51/00
Filed: 1961-07-26
Abstract: 911,145. Sewing-machines. MARKSCHEFFEL, A., [trading as MARCO STICKAUTOMATEN-GES. MARKSCHEFFEL & CO.] July 26, 1961 [Aug. 5, 1960], No. 27081/61. Class 112. A sewing-machine stop motion device controlled by the bobbin thread comprises a pair of contacts which close to stop the machine, one contact being provided on a rotation restraining finger extending from the bobbin case, the other being located in the path of limited movement of the finger, the bobbin thread applying a torque on the bobbin case, when the stitch is tightened, to hold the contacts separate, a make-and-break switch being connected in the circuit including the said contacts and operated by a cam connected to the stitch-forming elements to close the circuit only during the duration of the stitchtightening action. When the bobbin is empty, or the bobbin thread is broken, the contacts are not separated during the period when the switch closes the circuit, the circuit then operating a stopping device. The finger 1 of the bobbin case 2 forms one contact and projects through a recess 18 in a ring-shaped holder 14 which is tiltable about a hinge 15 and maintained in its operating position by a spring clip 16. The second contact 3 is insulatedly mounted on the holder and also projects into the recess 18. If no underthread 9 is present, or its tension slackens, the bobbin case is entrained by, and moves around with, the hook 11 within the limits allowed by the recess and the finger, until the contacts meet to complete the circuit through the make-and-break switch 6, when closed by a cam on the looptaker shaft, to energize the relay 5 and stop the machine. The contact 3 may be elastically mounted on the bobbin case.
Patent GB-1492346-A (GB)
Title: Process for the production of carbon black
IPC: C09C1/48
Filed: 1976-06-30
Abstract: 1492346 Carbon black production VSESO NI INST TEKHNICH UGLERODA 30 June 1976 [30 June l975] 27275/76 Heading ClA Carbon black is produced by saturating with water vapour a heated carrier gas, the carrier gas being in the form of a plasma stream prior to saturation, and then admitting a hydrocarbon feedstock into the saturated heated carrier gas to thermally decompose the feedstock to obtain carbon black, and quenching the carbon black and other decomposition products (mainly H 2 ) to a temperature of from 200‹ to 700‹ C. The water vapour may be introduced into the heated carrier gas both radially and tangentially in relation to the walls of the reaction chamber in a ratio of 3:1 respectively. The hydrocarbon feed stock is preferably introduced into the reaction chamber to contact the water vapour saturated carrier gas at a distance of not less than 5 times the reaction chamber diameter from the point of introduction of the water vapour into the carrier gas. Typical carrier gases are Ar, Xe, H 2 , air, hydrocarbon gases, off-gases of the C black production, or mixtures thereof. Suitable hydrocarbon feedstocks are gaseous hydrocarbons containing up to four C atoms, hydrocarbons of coal or coke origin, heavy oil refinery fractions and mixtures thereof with a correlation index of from 90 to 130; benzene, toluene and the paraffins may also be used, along with thermal cracking gas oil, green oil, anthracene oil, pitch distillates, furfural extracts of thermal cracking and feedstocks obtained in the thermocatalytic cracking of heavy oil fractions. Typical quench rates are 10<SP>5</SP> to 10<SP>6</SP> degs./sec., with quench times varying from 10<SP>-3</SP> to 10<SP>-2</SP> sec.