baber/WOPTO huggingface dataset:
Patent GB-1143468-A (GB)
Title: Vehicle windows
IPC: C03C27/12
Filed: 1966-04-28
Abstract: 1,143,468. Laminated windshields. CORNING GLASS WORKS. 28 April, 1966 [28 April, 1965], No. 18753/66. Heading B5N. A vehicle window comprises two spaced glass sheets 20, 24, and a transparent plastics layer 22 adherently bonded to the inner face of at least one of the glass sheets, the window being adapted to be mounted in a vehicle in such a position that the sheet 24 is an inner sheet and the sheet 20 is an outer sheet with respect to the interior of the vehicle, the window being characterized in that the sheet 24 has strengthening compressive stresses developed in a surface layer thereof and is no greater in thickness than the sheet 20, whereby the inner sheet 24 has a greater flexibility and resistance to fracture than the outer sheet has when impacted by a blunt object. In one method of making a windshield the outer sheet 20 is cut from a 0À085 inch thick ribbon of Li 2 O-Al 2 O 3 -SiO 2  glass and after grinding and polishing is strengthened by immersion in a molten salt bath of NaNO 3  at 450‹ C. for up to two hours. The inner sheet 24 is of similar glass 0À065 inch thick and is strengthened by a four hour treatment in a NaNO 3  bath at 450‹ C. followed by a five minute treatment in KNO 3  at 450‹ C. Alternatively Na 2 O-Al 2 O 3 -SiO 2  glass is used for the sheets in which case the strengthening treatment varies slightly. The strengthened glass sheets are then laminated to an interlayer of polyvinyl butyral in an oil autoclave. The strengthening of the glass sheets is such that on impact the inner sheet breaks up into granular particles unlikely to injure a passenger in the vehicle, and the outer sheet fractures into large pieces which do not impair vision through the windshield. In a second embodiment the glass sheets are of the same thickness, and in a third embodiment the plastics sheet is bonded to the inner face of one of the glass sheets only, the space between the plastics layer and the other glass sheet being filled by a liquid, held in place by an edge seal, and having a refractive index chosen to reduce reflections from the faces of the glass sheets.
Patent GB-820674-A (GB)
Title: Improvements in or relating to hockey sticks
Inventor: EMSLEY GEORGE IRWIN
IPC: A63B59/12
Filed: 1957-06-14
Abstract: 820,674. Hockey sticks. SLAZENGERS Ltd. May 23, 1958 [June 14, 1957], No. 18822/57. Class 132(2) Relates to forming an Indian type hockey stick head from a billet of wood which cannot be bent sufficiently to form the hook-shape of this type of head. A billet 1 is bent to form a bend 2. A saw cut 5 is then made to cut off parts 8, 7 from the underside 4 of the toe. The part 8 is scrapped and the part 7 is glued along surface 9 to the upper side 3 of the toe. A saw cut 10 removes excess wood and upper side of part 7 is, trimmed to form the hook shown in dotted line in Fig. 3. The head can be reinforced by a plate or pegs parallel to the striking face and perpendicular to the surface 9. One billet may provide more than one head side by side.
Patent GB-1423532-A (GB)
Title: Method of apparatus for investigating physiological properties of native blood cells
IPC: G01N15/12
Filed: 1973-04-19
Abstract: 1423532 Particle analysis LICENTIA PATENT-VERWALTUNGS GmbH 19 April 1973 [22 April 1972 16 April 1973] 18999/73 Heading G1N It has been found with a living-blood-cellsample, the pulses from Coulter type apparatus first increase linearly with current strength up to a certain point, and then increase more slowly. This discontinuity is presumed to be due to ion escape through the cell membrane and does not occur with fixed blood cells. The position of the break-point, and the further slope indicate the type and state of the blood cell. In Fig. 3 (not shown) a ganged switch arrangement is illustrated for controlling a current regulating Transistor in steps synchronously with the pulse-amplifier output-attenuator. Alternatively the amplifier gain may be varied by negativefeedback, and the switch may be replaced by a stepping motor driving a rotary potentiometer Fig. 4 (not shown) A constant voltage supply controlled by a differential amplifier may be used Fig. 5 (not shown) The control amplifier is fed with a reference voltage and the electrode voltage through an R.C. smoothing circuit (R10, C2) to eliminate the signal pulses. The particle signal is derived from a series dropping resistor (9). This system inherently compensates for change in the electrolyte resistance e.g. due to temperature variation.
Patent GB-652452-A (GB)
Title: Process for the manufacture of vat dyestuffs of the anthraquinone series
IPC: C09B1/42
Filed: 1948-07-15
Abstract: Dyes are made by heating a 6- or 7-halogen-1.4-diaminoanthraquinone, of which one amino group is acylated, with an acylating agent, the reactants being so chosen that in the resulting dyestuff one of the amino groups contains the residue of an alkyl-sulphone-benzoic acid, and the other amino group contains an acyl residue which is free from substituents containing the group -SO2-.  The starting materials are obtained by monoacylation of the corresponding diaminoanthraquinones (cf.  Specification 276,692, [Class 2 (iii)], or by acylation of the 1-amino-4-nitro bodies, followed by reduction of the nitro group. Acid halides, amides, or anhydrides may be used as acylating agents. The products dye cotton, linen, artificial silk and regenerated cellulose blue to red shades.  In examples: (1) 1-benzoylamino-4-amino-6-chloranthraquinone is acylated with 3-methyl-sulphone-benzoyl chloride; (2) 1-(p-methyl-sulphone - benzoylamino) - 4 - amino - 6 - chloranthraquinone is acylated with benzoyl chloride; (3) a mixture of 1-(p-chlorbenzoylamino)-4-amino-6 and 7-chlor-anthraquinones or the corresponding 1-benzoylamino bodies is acylated with m- or p-methylsulphonebenzoyl chloride; (4) 1 - (41-methoxy-benzoylamino)-4-amino-6-chloranthraquinone is acylated with m- or p-methyl sulphone benzoyl chloride; (5) 1-benzoylamino or 41-methoxybenzoylamino-4-amino-6-chlor-anthraquinone is acylated with p-isopropyl-sulphone-benzoyl chloride or p-n-butyl-sulphone-benzoyl chloride; (6) cotton is dyed bluish-pink with the product of (1) above.  The anthraquinone starting materials in all the above cases were prepared from the corresponding 1-amino-4-nitro-6- or 7-chloranthraquinone by acylation and reduction of the nitro group. Samples have been furnished under Sect. 2(5) of the Acts of four products prepared from 1.4-diamino - 6 - chloro - anthraquinone by monoacylation in a mixture of nitrobenzene and diethylaniline with (1) and (2) benzoyl chloride, (3) 4-chlorbenzoyl chloride, (4) 4-methoxy-benzoyl chloride, followed, without isolation of the monoacylated product, by acylation with (1) 3-methylsulphone benzoyl chloride, (2) 4-n-butylsulphone benzoyl chloride, (3) 4-methyl sulphone benzoyl chloride, (4) 3-methylsulphone benzoyl chloride.
Patent GB-680736-A (GB)
Title: Improvements relating to perches or slatted floors of fowl houses or the like
Inventor: WATSON JOHN HERBERT
IPC: A01K31/12
Filed: 1950-08-01
Abstract: 680,736. Poultry houses. MATTERSON, HUXLEY & WATSON, Ltd. July 17, 1951 (Aug. 1, 1950], No. 19161/50. Class 5(ii) Supports for perches and slatted floors in poultry houses and the like consist of wire-mesh having at least three horizontal strands 14, 15, 16, connected by transverse strands 11 which are bent through an angle. Recesses for perches orslats are thus formed, the perches resting on the strands 15 and abutting against the house-wall to which the strands 14, 16 are clamped or welded. In a modfication, slats rest between the rounded or inverted-V tops of upright strands, the four horizontals being secured to end-beams.
Patent GB-838661-A (GB)
Title: Improvements in or relating to printing machines
IPC: B41K3/04
Filed: 1957-06-18
Abstract: 838,661. Printing-machines; feeding webs. BILSKY. H. June 5, 1958 [June 18, 1957],. No. 19167/57. Classes 100(1) and 100(2) Platen machines, embossing, inking- apparatus. A printing machine for printing and if desired embossing, perforating or shearing a strip of tickets or labels comprises a vertically reciprocable type box actuated through an actuating lever by a crank arm on a main shaft, the arrangement being such that in the two end positions of the reciprocable movement of the type box the actuating lever and the crank arm are parallel to one another and substantially perpendicular to the top surface of a flat bed secured to the machine base. As shown, a vertically reciprocable type box 16 is slidably mounted by a pin 18 and trunnions 17 extending into vertical guide slots, not shown, in plates 13, 14. An oscillating lever 19 actuated by a crank 24 and crank pin 25 engages the pin 18. The crank 24 is on a shaft 23 rotated by a handle 26, the shaft 23 being journalled in an eccentric 27 rotatably adjustable in the plate 14 by a sector 29 lockable by a plate :30 and screw 31. Thus, by releasing the screw 31 the distance between the shaft 23 and a bed 20 may be varied. An absorbent ink-roller 57, soaked in ink, inks the type 56 by rolling across the type face as the type box 16 reciprocates. The ink rolled 57 is mounted on a shaft 62 engaging slots in a pair of spring-loaded arms 58. Feeding webs. A web is fed intermittently along a base 10 beneath the type box 16 by projections 38 carried by spring- loaded plates 37 and engaging perforations in the web. The plates 37 are mounted by a pivot 39 on a feed lever 32 this pivot 39 also supporting a pivotal bracket 40 loaded by a spring 41. The feed lever 32 pivotally mounted on a shaft 33, is rocked through levers 35 by links 34 mounted on the pin 18 and connected by a transverse bar at their opposite ends, the transverse bar being adjustably connected to the feed lever by a screw-threaded bar, not shown, passing through the lever 32. The screwthreaded bar carries a compression spring and is locked by an adjusting nut 36. A shield 43 adjustably mounted longitudinally of the base 20 in a plate 45 covers part of the web being fed to vary the length of feed 'at each operation of the box 16. The plate 45 is pivotally mounted on a shaft 47 to permit rocking upwards to allow insertion or removal of a web into or from the machine. The plates 37 may carry rubber fingers which frictionally engage the web instead of projections 38.
Patent GB-613698-A (GB)
Title: Improved spanner or wrench
IPC: B25B13/46
Filed: 1946-06-27
Abstract: 613,698. Wrenches. GOLDMAN, A. June 27, 1946, No. 19209.. [Class 61 (iii)] A ratchet wrench has the teeth c<SP>1</SP> protected against dust &c. by a metal strip e encircling the head and secured thereto at the ends by riveting, screwing or spot welding. The pawl g is of circular section.
Patent GB-359964-A (GB)
Title: Process for the manufacture of acetic anhydride
IPC: C07C51/56
Filed: 1930-06-24
Abstract: Acetic anhydride is produced by passing acetic acid containing an acid amide or nitrile, ammonia, an ammonium salt, or an amine or salt thereof, over a phosphate catalyst.  The catalyst may be heated electrically and the acid vapour may be passed through the liquid catalyst.  In examples, the catalyst is a mixture of sodium and lithium metaphosphates with boryl phosphate, which is melted electrically in a crucible of chromium-nickel steel, vapour of acetic acid containing the organic nitrogen compound being passed through the melt at 700-750 DEG  C.  The nitrogen compounds used are: (1) urea; (2) acetamide; (3) benzonitrile; (4) ammonia; (5) ammonium nitrate; and (6) pyridine.  Other nitrogen compounds mentioned as suitable are alkylamines, tetralkylamine bases, picoline, piperidine, quinoline, aniline, alkylanilines and their salts.  Specification 317,907, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-1507665-A (GB)
Title: Solvent extraction
IPC: B01D11/04
Filed: 1974-05-02
Abstract: 1507665 Mixer/settler DAVY POWERGAS Ltd 4 April 1975 [2 May 1974] 19266/74 Headings BID and B1F A mixer settler comprises a plurality of settling chambers 14 positioned around the periphery of mixer 4, each chamber 14 having one or more coalescer units 19 extending transversely across the liquid flow, and also possibly a baffle 20 of "D.C. Knitmesh". Unit 19 may be a knitted mesh of stainless steel and polypropylene monofil.
Patent GB-1176647-A (GB)
Title: Improvements relating to Magnetic Storage Arrangements.
Inventor: COLE ALUN JOHN
IPC: G11C11/04
Filed: 1966-05-02
Abstract: 1,176,647. Circuits employing bi-stable magnetic elements. PLESSEY CO. Ltd. 1 May, 1967 [2 May, 1966], No. 19293/66. Heading H3B. Metal oxide silicon transistors (MOSTs) are used for selecting column and/or row lines of a magnetic storage matrix using either ferrite cores or cylindrical anisotropic thin films. A word-organized thin film store is shown comprising a plurality of sub-matrices, the digits of a word being stored singly in corresponding positions such as A, B, in respective submatrices. To write a word in a selected column a switch H1-H4, which may optionally be a MOST, is closed and enables a pulse I w  from a source 8 to switch the storage elements in the column towards the hard direction of magnetization. A single row in each submatrix is selected by appropriately energizing a MOST in each of the submatrix groups M1-M4, M5-M8, the gate electrodes of MOSTs in corresponding rows of the submatrices being commoned. Each digit is characterized by the potential of a pulse I b  applied from a respective pulse source 6, 7, the pulses determining the direction along the easy axis which the magnetization of each film takes up when the column and row pulses I w , I b  terminate. For non-destructive read-out a pulse is applied to a selected column line and one MOST M1-M4, M5-M8 of each submatrix made conductive, the digit voltages induced in the row conductors being detected by sense amplifiers 9, 10. The row line MOSTs are biased so as to carry current in either direction when conductive.
Patent GB-766830-A (GB)
Title: Improvements relating to hinged lasts
Inventor: CHEESEMAN ALFRED JAMES THOMAS
IPC: A43D3/02
Filed: 1954-07-02
Abstract: 766,830. Hinges and pivots. MOBBS & LEWIS, Ltd. June 21, 1955 [July 2, 1954], No. 19512/54. Class 65 (2). [Also in Group VII] The hinge of a two-part gapped shoe last comprises two pivotally-connected complemental elements to be fixed in recesses 5, 6 in the last parts 1, 2, and each element comprises a pair of spaced parallel members 7, 7, 11, 11 arranged in planes perpendicular to the pivot 17 connecting the elements, and connected to the last parts 1, 2 by nuts 18, a latch 19 supported between the members of one element engaging the members of the other element to lock the last in extended condition. The latch is released by raising it to dotted line position 19<SP>1</SP>, Fig. 1, when it is desired to contract the last for removal from a shoe.
Patent GB-371227-A (GB)
Title: Improvements in and relating to sound-reproducing tools, gramophone needles and the like
IPC: G11B3/44
Filed: 1931-07-08
Abstract: 371,227. Gramophone reproducing tools. CARDINELL, J. D., 15, Label Street, Montclair, New Jersey, U.S.A. July 8, 1931, No. 19663. [Class 40 (ii).] The tool described in Specification 307,687 comprising a wire surrounded by a casing of graphite such as used for writing pencils and mounted in a chuck with a stem adapted to be secured in the needle socket is constructed with a graphite casing made from kilned or calcined graphite, and the wire protrudes beyond the end of the casing in the new tool. The Figure shows a wire 1 of hardened steel or alloy in a substantially cylindrical casing 2 of kilned or calcined graphite beyond which the point 7 of the wire protrudes sufficiently to engage the groove 3 of a record 4. The cased wire is fixed in a chuck 5 having a stem 6 to engage the usual needle socket. Reference has been directed by the Comptroller to Specification 307,687, [Class 40 (ii), Phonographs &c.].
Patent GB-1447052-A (GB)
Title: Electrically heatable blanket or pad
IPC: H05B3/34
Filed: 1973-04-25
Abstract: 1447052 Supply systems for electric blankets and pads DREAMLAND ELECTRICAL APPLIANCES Ltd 7 March 1974 [25 April 1973] 19709/73 Heading H5H [Also in Division H2]  An electrically heated blanket or pad 10 has a resistance heating element 11 consisting of a plurality of wires or strands 12 electrically insulated from one another, the wires 12 being connected to a selector device 14 by means of which one or more of the wires may be connected to a low voltage supply. In the disclosed embodiment there are 24 strands each designed to dissipate 5 watts; the blanket power dissipation may therefore be varied by 5 watt steps. The strands 12 may be directly connected to the selector device 14 or may be connected thereto by means of leads which extend from the blanket. A step-down transformer 16 and a plug and socket 15 may be connected between the mains supply and the selector device 14.
Patent GB-597668-A (GB)
Title: Apparatus and method for manufacture of pulp
IPC: D21B1/12
Filed: 1945-08-02
Abstract: 597,668. Defibrating cellulosic materials. ASPLUND, A. J. A. Aug. 2, 1945, No. 19843. [Class 96] [Also in Group XXXV] Lignocellulosic materials are heated under steam pressure in a container 22 in which they are automatically maintained at a predetermined level prior to defibrating at over 100‹ C. Coniferous wood chips may be soaked up to 8 hours in a 1 to 3 per cent solution of caustic soda at up to 80‹ C., excess solution drained and expressed and the chips conveyed to a feeding- screw 12 which forces them past a flap valve 23 to a feed pipe 21 supplied with steam at 21a and into the vertical, preheater container 22. The chips in the upper part of the container 22 move a flap 24 secured to a shaft 24a turning of which actuates an electric motor control switch &c. to vary the speed of the feeding-screw 12. A rotary disc 51 which may not be perpendicular to its shaft 50 and which may have lugs 54 prevents the chips from bridging and blocking the outlet of the container 22 from which the chips are delivered by a screw 26 to a disc-grinder 36, steam pressure of which is equalized by a pipe 38 with the top of the container 22. In a modification, the material in the container is maintained at the desired level by one or two rotating wheels with flexible spokes which bend to actuate switches when lugs on the rims encounter resistance by chips &c. in the container 22. Specification 393,159 is referred to.
Patent GB-1382340-A (GB)
Title: Production of precipitated silica
IPC: C08K3/00
Filed: 1972-04-28
Abstract: 1382340 Precipitated silica SOC FRANCAISE DES SILICATES SPECIAUX SIFRANCE 28 April 1972 [4 Nov 1971] 19880/72 Heading C1A In a method for producing silicas having a specific surface area of 100 to 600 in.<SP>2</SP>/g. which does not vary with drying by the action of strong acid on a sodium silicate, the addition of the acid to the silicate is interrupted upon 1 to 3 occasions, the first interruption taking place after the SiO 2 /Na 2 O molar ratio reaches a value of 5À5. Preferably the first interruption occurs when the ratio is 5À7 to 7 and the second when the ratio is 10 to 25. The rate of addition of the acid may be such that the variation of the alkalinity of the medium as a function of time is constant. The constant may be different in one acid adding phase from that in another. The process may be continuous or discontinuous. Preferably the silicate concentration is 100 to 200 g./litre with a SiO 2 /Na 2 O molar ratio of 1 to 4, the acid has a concentration such that the final SiO 2  concentration is 50 to 100 g./litre, the temperature is 40‹ to 95‹ C. and the total time for the acid addition is 40 to 180 minutes, the interruptions lasting 5 to 30 minutes.
Patent GB-1103581-A (GB)
Title: Low frequency sine wave generator
Inventor: FORD ROBERT LESLIE
IPC: H03B5/10
Filed: 1963-05-20
Abstract: 1,103,581. Waveform changing. MINISTER OF TECHNOLOGY. 20 Aug., 1964 [20 May, l963], No. 19909/63. Heading H2F. [Also in Division H3] A triangular wave produced by an oscillator 1 is converted into a sine wave with the aid of an auxiliary sine wave oscillator 3 operating at a higher frequency. Signals from the oscillator 3 are converted into sawtooth waves by generator 7 and fed to a comparator 8 which generates pulses at the same frequency of a length proportional to the instantaneous value of the input v from oscillator 1. These pulses are used to gate a sine-wave output from oscillator 5, and it is shown that the output from the amplifierfilter 10 is a cosine wave at the frequency of oscillator 1. A quadrature phase output of oscillator 3 at terminal 4 may be used to generate a sine wave at the frequency of oscillator 1. The oscillator 1 is a relaxation oscillator operating at a low-frequency proportional to an input voltage Va.
Patent GB-147914-A (GB)
Title: Improvements in or relating to stiffeners for boots or shoes
IPC: A43B23/08
Filed: 1920-07-09
Abstract: 147,914. British United Shoe Machinery Co., (Assignees of Beckwith, H. H.). July 28, 1915, [Convention date]. Stiffeners. - Shoe stiffeners of known fibrous material, such as wool felt, containing a known stiffening-compound, such as moutan wax and asphalt, adapted to be softened by moderate heat, are compressed by heat and pressure after the edges are skived. The skived blank 3, 4, Fig. 1, is passed between a heated roller 7, Fig. 2, and a covered roller 5, 6. The skiving produces some dust from the stiffening in the blank, but more stiffening-material may be fed to the rollers to give a finished surface to the blank. Specification 2023/15 is referred to.
Patent GB-425204-A (GB)
Title: Improvements in belt-fastener staple-clinching apparatus
IPC: F16G3/00
Filed: 1934-07-07
Abstract: 425,204. Belt fastenings. NICHOLSON & CLIPPER CO., Ltd., W. T., and DRAYCOTT, C. E., King Street, Salford, Lancashire. July 7, 1934, No. 19972. [Class 80 (i)] Relates to apparatus of the kind adapted to be operated by a vice to clinch staples to the end of a belt. The presser bars a are secured to plates b constrained to remain parallel to each other and to the staple holder e (1) by pairs of links f<1>, f<2>, which are pivoted to the plates and to blocks g sliding in slots underneath the staple-holder e ; and (2) by rods h<1>, h2, slidable in the holder e. The plates bare normally pressed outwards by conical springs i, the movement being limited by the engagement of the blocks g with stop pins k. The device is adapted to rest on the jaws of a vice by flanges d on the plates b.
Patent GB-1514321-A (GB)
Title: Winding tubes and containers
IPC: B29C33/56
Filed: 1975-05-13
Abstract: 1514321 Mandrel for helical winding TROISDORFER BAU-UND KUNSTSTOFF GmbH 13 May 1975 [14 May 1974] 20034/75 Heading B8G Tubes or containers are made by helically winding a synthetic, thermoplastic bond on to a mandrel having an outer layer of rubber or synthetic elastomeric material, and joining the material, e.g. by welding, along the resulting helical seam. The layer may be formed as a sleeve, e.g. of silicone rubber, which is drawn on to the mandrel. The band may be heated before winding, or may be wound directly as it emerges from an extruder, and may be pressed on to the mandrel by a roller.
Patent GB-863581-A (GB)
Title: Improvements relating to polyphase watthour meters, indicating watt meters and the like
Inventor: HEWLETT STANLEY JAMES
IPC: G01R11/40
Filed: 1957-06-25
Abstract: 863,581. Induction meters. UNITED GAS INDUSTRIES Ltd. June 25, 1958 [June 25, 1957], No. 20053/57. Class 37. A polyphase meter of the induction type is provided with conducting loops 9, and one comprising sections 13 and 14, embracing each pair of poles, the series and voltage poles being 3, 4, 5 and 6, 7, 8, respectively, to prevent or minimize the errors due to interaction of the phases, each loop being twisted at its centre so that current induced in a loop by the pole is reversed in direction at the other pole.