baber/WOPTO huggingface dataset:
Patent GB-1489440-A (GB)
Title: Liquid flow-rate measuring device
IPC: G01F1/704
Filed: 1975-01-31
Abstract: 1489440 Measuring fluid-flow SANDOZ Ltd 31 Jan 1975 [4 Feb 1974] 4385/75 Heading G1R A device for measuring the flow-rate of a liquid, particularly blood in an extracorporeal handling system comprises a graduated chamber 12 receiving the liquid e.g. from a pump 42 and dialyzer 44, the chamber 12 being surrounded by a further chamber 24 into which the chamber 12 discharges via a thin edged aperture 18. Pressures between the chambers are equalized by holes 30. The liquid may discharge through a filter 34 and control valve 38. Conduits 39, 40 are normally capped but may be opened for sampling or addition of substances e.g. saline. The chambers may be of transparent plastics and the device may be disposable.
Patent GB-844799-A (GB)
Title: Improvements in or relating to light controlling devices
IPC: C04B35/26
Filed: 1958-02-11
Abstract: Ferrimagnetic materials of the general form A3B5O12, where A may be yttrium or any one of the rare earths of atomic number 62 to 71 inclusive, or mixtures of any one of these rare earths with each other or with yttrium and where B may be iron, or iron diluted with aluminium, gallium, scandium or chromium, or mixtures of these diluents with iron, are employed in a light modulator (see Group XL(b)) utilizing Faraday rotation of the plane of polarization.  The materials which are structurally similar to Grossularite are referred to as garnets. Single crystals of yttrium-iron garnet are prepared by heating 100 grms of lead oxide, PbO, 70 grams of iron oxide Fe2 O3, and 3.5 grms of yttrium oxide Y2O3 for five hours at a temperature of 1325 DEG C. in an atmosphere of oxygen. Cooling is effected first to 900 DEG C. at the rate of 5 DEG C. per hour, and then to room temperature.  The resultant mass comprises a lead oxide matrix from which crystalline phases of magneto plumbite and yttrium-iron garnet are separated by solution in 6N nitric acid to which the crystals are impervious.  The yttrium-iron garnet is then separated by examination.  It is stated that rare earth-iron garnets may be prepared in a similar manner.
Patent GB-1024444-A (GB)
Title: Voltage regulators
Inventor: PAICE DEREK ALBERT
IPC: H02M3/137
Filed: 1962-02-06
Abstract: 1,024,444. Automatic voltage controls. ROTAX Ltd. Jan. 16, 1963 [Feb. 6, 1962] No. 4464/62. Heading G3R. [Also in Division H3] A voltage regulator for a D.C. supply comprises a first controlled rectifier connected between input and output terminals, second and third controlled rectifiers associated with the first controlled rectifier, and a circuit producing pulses which are applied to the gates of the rectifiers, the arrangement being such that the supply circuit is broken intermittently for periods sufficient to maintain the average output voltage at a desired value. As shown, a voltage regulator comprises input terminals 3, 4, output terminals 6, 7, a first controlled rectifier 12 shunted by a diode 13 and connected between terminal 3 and 6, a series circuit including a second controlled rectifier 14, inductors 15, 17 and a third controlled rectifier 18 connected between terminals 3 and 4, a capacitor 19 connected to the cathode of controlled rectifier 12 and a pulse producing circuit including an oscillator 25. The controlled rectifier 12 is switched on at predetermined equal intervals of time by a first pulse produced by the oscillator 25 in association with a transistor 52 and a transformer 55; a second pulse produced by oscillator 25, transistor 64 and transformer 66 renders rectifier 18 conductive, whereby capacitor 19 is charged until rectifier 18 is switched off by the back bias across it; a third pulse switches on the rectifier 14 at a variable instant after switching on of the rectifier 18, permitting discharge of capacitor 19 through diode 13,with consequential reverse biasing and switching off of rectifier 12, the variable instant being determined by the voltage across terminals 6, 7 whereby the output voltage is maintained constant. The third pulse is produced by a circuit including a resistor 90 connected across the terminals 6,7 and having a variable point connected to transistor 82 which is thus rendered conductive by an amount dependent upon the output voltage; conduction of transistor 82 controls the conduction of transistor 78 which in turn allows capacitor 76 to charge up to a predetermined level sufficient to render a uni-junction transistor 73 conductive, whereby a pulse is applied over diode 70 to transistor 42 to switch the latter on and produce the third pulse at an instant which is dependent upon the output voltage. A fourth pulse, produced by the oscillator 25 in association with transistor 42 and transformer 48, switches the rectifier 14 on at the commencement of each cycle;when the regulator is working under conditions of maximum output, i.e. when the third pulse does not appear,this fourth pulse ensures that the capacitor 19 is sufficiently charged to switch off the rectifier 12 when required.
Patent GB-1393882-A (GB)
Title: Production of transparencies
IPC: G03C11/18
Filed: 1971-02-15
Abstract: 1393882 Photographic transparency P M GEE 11 May 1972 [15 Feb 1971] 4647/71 Heading G2X A selectively coloured transparency particularly for projection is produced by (1) using an original subject to produce a photographic record having transparent areas or lines bounded by substantially opaque areas or lines and (2) colouring one or more of these selected areas by manually applying a transparent colouring medium of high intensity.
Patent GB-755120-A (GB)
Title: Improvements in or relating to windshield wiper squeegees
IPC: B60S1/38
Filed: 1954-02-17
Abstract: 755,120. Windscreen cleaners. PRODUCTIVE INVENTIONS, Inc. Feb. 17, 1954 [March 9, 1953], No. 4648/54. Class 138(1) A windshield wiper squeegee comprises an attaching portion securable to a wiper arm and a wiping head connected by a hinge portion to the attaching portion, the cross-section of the wiping head and/or hinge portion adjacent both extremities of the squeegee being different from the cross-section intermediate the extremities, whereby the tendency of the squeegee to flex is less adjacent the extremities of the squeegee. The squeegee, Figs 2 and 3, has an attaching portion 8, provided with grooves 11 to receive longitudinal parts 12 of a flexible backing member, and connected by a web or hinge portion 10 to the wiper head 9. Grooves 15 on either side of the web 10 terminate short of the ends of the squeegee so that the end portions 16 restrict lateral flexing of the head 9 relative to the portion 8 at the ends of the squeegee. The flexible backing parts 12 are connected to the ends of secondary yokes in turn connected to a primary yoke attachable to the wiper arm in known manner. Clips are provided at the ends of the backing to retain the wiper blade assembled with the secondary yokes. Modifications of the ends of the squeegee, are shown in Figs. 5, 7, 9 and 11. Specification 666,473 is referred to.
Patent GB-449341-A (GB)
Title: Process for the production of light sensitive diazo layers and prints
Filed: 1935-02-13
Abstract: The diazo compounds of aminoacylamines as used in the parent Specification are modified by the introduction into the molecule of a thioglycollic acid residue.  The compounds are derived from amines of the formula NH2--R--N(R<1>)--CO--CH2--S--X where R is an aromatic nucleus substituted or not, R<1> is hydrogen or an alkyl, aryl, or hydroaromatic residue, and X is an aromatic or aliphatic-aromatic residue substituted or not.  The diazo compounds of the following amines are specified: 2 : 5-diethoxy-4-phenylmercaptoacetylamino-1-aminobenzene prepared by nitration of the product obtained from phenylthioglycol acid chloride and aminohydroquinonediethylether followed by reduction, e.g. catalytically in the presence of nickel; 4-phenylmercaptoacetylamino-1-aminobenzene, prepared by reduction of the product from phenylthioglycol acid and p-nitraniline; 4-phenylmercaptoacetylamino-3-methyl-1-aminobenzene; 2 : 5-diethoxy-4-(N-phenyl-phenylmercaptoacetylamino)-1-aminobenzene; 2 : 5 - dimethoxy - 4 - benzylmercaptoacetylamino - 1 - aminobenzene; 2 : 5 - diethoxy-4 - (N - ethyl - phenylmercaptoacetylamino) - 1 - aminobenzene; 2 : 5-diethoxy-4-(2<1>-methyl-4<1>-chloro - phenylmercaptoacetylamino) - 1 - aminobenzene; 2 : 5-diethoxy-4-(4<1>-methyl-phenylmercaptoacetylamino) - 1 - aminobenzene; 2 : 5-diethoxy-4-(2<1>-ethoxy-phenylmercaptoacetylamino) - 1 - aminobenzene; 2 : 5-diethoxy-4-(2<1>-chloro-phenylmercaptoacetylamino) - 1 - aminobenzene; and 2 : 5-dimethoxy-4-b -naphthylmercaptoacetylamino-1-aminobenzene.
Patent GB-408783-A (GB)
Title: Improvements in garments such as cardigans, pull-overs and the like
IPC: A41D1/04
Filed: 1933-02-16
Abstract: 408,783. Pull-overs and cardigans. BERNSTEIN, A., (trading as BERNSTEIN, M.), 22, Dutton Street, Cheetham, Manchester. Feb. 16, 1933, No. 4714. [Class 141.] Slip or pull-over garments and cardigans are made with the body part a of tweed or like woven fabric, the edges of the neck and arm openings, if any, and the bottom edge being bordered with knitted fabric d, e, f such as wool, silk, or artificial silk. The sleeves, if used, may be formed of knitted or woven fabric, and the cuffs of knitted yarn. The segments of the body part may be stitched together or to interposed strips o of knitted fabric. A front or side opening may be closed by a sliding-clasp fastener g.
Patent GB-596441-A (GB)
Title: An improved loading device for use on vehicles
IPC: E02F3/34
Filed: 1945-02-26
Abstract: 596,441. Load-handling machines. BURGESS, A. F. (Wachter, L. W.). Feb. 26, 1945, No. 4758. [Class 78(iii)] [Also in Group XXI] A power-operated loading device on a vehicle comprises a pair of crossconnected triangular frame truss members pivoted at one end to bearing supports directly carried by one of the axles of the vehicle and pivotally carrying at the other end a loadcarrying device such as a bucket, and an hydraulic piston and cylinder assembly for raising and lowering the truss members interposed between each truss member and the frame of the vehicle and operated by an engine carried by the vehicle. Figs. 1, 2 show the application to a tractor in which the device comprises frames 15 pivotally mounted at 12 on members 10 secured to the tractor driving axles 5, and a bucket 30 pivotally mounted at 19 on the frames. These frames are raised by piston rods 41 operating in cylinders 40 supported on brackets 37 connected to the tractor frame 3, pressure being supplied to the cylinders through a conduit 44 from a pump in the transmission housing 2. The bucket may pivot about its axis to discharge its contents by releasing a latch 26 which is mounted on a shaft 24 and engages a member 34 adjustably mounted on the part 31 of the bucket. The latch is operated through an arm 27 fixed on the shaft 24 and connected by a cable 28 to an arm 29 secured to one of the frames 15. The bucket may be replaced by a fork or rake.
Patent GB-914427-A (GB)
Title: Production of barium oxide compositions
IPC: C01F11/02
Filed: 1961-02-09
Abstract: Production of barium oxide compositions is effected by heating together particulate barium oxide and 0,1 to 10% of barium carbonate, at a temperature of at least 950 DEG C. (preferably 1000 DEG  to 1200 DEG C.) whilst mixing the particles of barium oxide, for at least 5 minutes.  The mixing may be effected by using a rotary kiln, a fluidized bed, or an extended bed.  If a fluidized or extended bed is used the fluidizing agent is an inert gas, e.g. nitrogen.  The resulting barium oxide compositions may be employed to produce barium detergents (see Group IV(b)). Specifications 759,765, 759,766, 759,821, 836,797 and 845,122 are referred to.ALSO:Barium oxide is treated with methanol to produce a barium methylate solution which is then reacted with a sulphonic acid e.g. benzene sulphonic acid to produce a barium detergent.  In an example barium oxide is treated with methanol at 30 DEG  to 40 DEG C., and the solution is filtered at 30 DEG  to 40 DEG C.  Specifications 759,765, 759,766, 759,821, 836,797 and 845,122 are referred to.
Patent GB-805842-A (GB)
Title: Improvements relating to ballot-boxes
Inventor: ROBINSON GRANVILLE JAMES
IPC: G07C13/02
Filed: 1956-02-16
Abstract: 805,842. Ballot boxes. LOWE & FLETCHER Ltd. Feb. 15, 1957 [Feb. 16, 1956], No. 4807/56. Class 106 (4). A ballot box is shaped so that it may be nested with others when not in use, the lid being either capable of hinging through 180 degrees to assist the nesting, or being removable. The slot may be closed by a slide 17 capable of being sealed in the closed or open positions, and the lid when closed may prevent access to an indicator card or label in a holder 23. Lugs 25 permit the box to be secured to a floor and are pivotable out of the projecting position when not in use. Fig. 4 shows two stacks of the boxes packed in a case 26.
Patent GB-858121-A (GB)
Title: Pipe couplings
Inventor: BUSCHOW HERMAN FREDERICK
IPC: F16L13/007
Filed: 1957-02-12
Abstract: 858,121. Jointing. HYDROCARBON RESEARCH Inc. Feb. 12, 1957, No. 4828/57. Class 83 (4). [Also in Group XXVIII] Nipples 10, 14 of dissimilar metals, for welding to pipes of respectively similar metals, are telescoped and the outer nipple 14, which is of more ductile metal, is caused to extend into and fill preformed grooves 13 in the outer surface of the inner nipple 10. Nipples 10, 14 may be of stainless steel and aluminium respectively. Nipple 14 may be slipped over nipple 10 and then swaged in a die so that aluminium flows into grooves 12, Fig. 1 (not shown), 13. Contact pressure between the surfaces of the nipples may be imposed by a stressed sleeve 11 shrunk on to nipple 14 or comprising two halves tightly bolted together. To shrink-fit the sleeve, the swaged coupling is machined to a diameter just larger than the internal diameter of the sleeve. The sleeve is placed on a block 16 and heated to about 600 ‹ F. by a furnace 17, and the swaged coupling is chilled to about - 50‹ F. by dry ice and, with the aid of rod 19 and guide plugs 20, 21, slipped into the heated sleeve. The assembly is then water-cooled to room temperature, and the nipple 14 is trimmed off to the dotted line 24. In a modification, the aluminium nipple is cast on to the preformed steel nipple.
Patent GB-490679-A (GB)
Title: Improvements relating to the manufacture of inductance-coil cores of finely-divided magnetic material provided with threads, collars, grooves, or the like
IPC: H01F17/04
Filed: 1937-02-17
Abstract: 490,679. Grinding ; inductances. STEATIT-MAGNESIA AKT.-GES. Feb. 17, 1937, No. 4833. Convention date, Feb. 17, 1936. [Class 60] [Also in Group XXXV] In the manufacture of inductance-coil cores made of consolidated finely-divided magnetic material, internal or external threads, collars, grooves, &c. are formed on or in the core by grinding. The core may be supported, during grinding, by internally fluted centres, as b, Fig. 1, by triangular centres c or by resiliently pressed members, as f, Fig. 2, with roughened or resilient gripping parts, or as h having a resilient pad i; when the core k is hollow, it may be mounted on a mandrel f<1> Fig. 3. In a further modification, the core is supported by two rotating rollers provided with grooves the same axial length as, and receiving the core. The grinding-wheel e has a shaped periphery and is moved axially to form a thread to receive the coil winding, the wheel being inclined for forming steep angle threads ; it may be cooled by a jet of compressed air directed on the grinding area, and may be trued by members p, Fig. 5, of hard metal &c. mounted so as to be adjustable to give the desired flank angles to the wheel. Variablepitch threads may be ground by the use of a variable-speed friction gear s, Fig. 6, the wheel t being moved by a templet. The core also may have plain cylindrical parts or longitudinal grooves formed therein by grinding, and the grinding may take place before final hardening of the core ; the grinding-wheel may have a bond of artificial resin or rubber. A groove may be ground in the core to receive a rubber or cork ring to avoid backlash when the core is adjustable to vary the inductance of the coil, and when the core has a thread of varying pitch, Fig. 11, the thread may engage a projection A in a member B forming a support for the coil winding or a stationary part of a composite core, the core a being moved to vary the inductance of the coil.
Patent GB-160352-A (GB)
Title: Improvements in match-boxes
IPC: A24F27/00
Filed: 1920-02-17
Abstract: 160,352. Bell, C. A. Feb. 17, 1920. Drawer - and - shell boxes.-To prevent the drawer b of a match box from falling out of the shell a, the sides c are formed convex or outwardly bulging, as shown.
Patent GB-849624-A (GB)
Title: Improvements in or relating to the mechanical testing of materials
Inventor: JOBLING ALAN
IPC: G01N3/02
Filed: 1956-02-16
Abstract: 849,624. Testing physical qualities of materials. AVIATION, MINISTER OF, [formerly MINISTER OF SUPPLY]. May 14, 1957 [Feb. 16, 1956], No. 4844/56. Drawings to Specification. Class 106 (2). A method of testing the mechanical properties of materials comprises applying mechanically produced strains to the material under test through a deformable substrate to which the test material adheres throughout an area. The materials to be tested may include pastes, powders, polymer films and vacuum deposited films of metals. It is stated that the method may be applicable to a study of solid friction, of boundary lubrication, or of dilatant systems. Suitable substrates are formed from sheets of rubber, which may be arranged in the form of a cross, a disc, or an ellipse. Various methods are described by which tensional and shear forces may be applied to such members. It is also suggested that a partially inflated balloon might be used in certain circumstances. Other materials may also be used to form the substrate, such as a film of cellulose acetate, or a ductile metal, this being used for testing a thin film of brittle metal. For best results the test material should be sandwiched between two parallel substrates, in which case the mechanical actions imposed are more nearly homogeneous.
Patent GB-753862-A (GB)
Title: Toothbrush with a flexible head
IPC: A46B7/06
Filed: 1954-02-19
Abstract: 753,862. Toothbrushes. BRESSLER. L. R. Feb. 19, 1954, No. 4882/54. Class 19 A tooth brush of the type in which the head consists of a number of sections moulded about a flat nylon spring has the bristles secured in holes which are drilled so as to pass through the spring. The tooth-brush shown is similar to that described in Specification 705,643 and the bristles are anchored by a staple or by a wire 30 wedged across the hole.
Patent GB-195237-A (GB)
Title: An improved time-lag electric switch
IPC: H01H29/10
Filed: 1922-02-20
Abstract: 195,237. Allen, R. S. Feb. 20, 1922. Mercury switches; retarding devices. - A time-lagswitch comprises a rotatable casing containing a liquid conductor such as mercury and a partition f having a port k, whose area is regulated by a screw l and through which the conductor flows and subsequently makes circuit between two contacts m, n. Fig. 2 shows the switch in the " on " position, and to open it, the casing is rotated through 90‹ in a counter-clockwise direction so that the conductor flows quickly through an unrestricted port at the other end of the partition f. Figs. 5 and 6 show the device as applied to a. contactor or controller for a number of circuits. A shallow, rectangular, mercury casing p is pivoted at q and rotated by a solenoid t and chain v against the action of a spring x to a position wherein the well 3 is uppermost. Mercury then flows down compartment z, through port k and up compartment y covering the contacts 5 in succession. A check valve 9 ensures the unidirectional flow of the mercury, and a large port o ensures rapid opening. To compensate for loss of head of the mercury, the cross-section of the compartment y is diminished in the direction of the port o, thus ensuring regular intervals between the closing of the successive circuits.
Patent GB-339876-A (GB)
Title: A process for rendering fuel agglomerates formed with the aid of algine which swell upon contact with water unaffected by the action of water
IPC: C10L5/14
Filed: 1930-02-14
Abstract: 339,876. Gloess, P. Feb. 14, 1929, [Convention date]. Composition fuel agglomerates formed with algine are impregnated with coal tar, wood tar, pitch, or other organic coking material which is then coked to render the agglomerates unaffected by water.
Patent GB-757812-A (GB)
Title: Improvements in production of alpha, beta-unsaturated aldehydes
IPC: C07C47/21
Filed: 1954-02-22
Abstract: Straight - chain a ,b  - unsaturated aldehydes having 4, 6 or 8 carbon atoms are prepared by the condensation of acetaldehyde or a mixture of acetaldehyde and crotonaldehyde at a temperature within the range from 20 DEG  C. to 185 DEG  C. in the presence of a non-alkaline condensation catalyst and a mutual solvent for the acetaldehyde, or mixture of acetaldehyde and crotonaldehyde, and catalyst, the catalyst comprising a mixture of or a reaction product of (1) a primary or secondary amine or ammonia; and (2) phosphoric or phosphorous acid, characterized in that the catalyst contains from 0.2 mol. to 2 mols. of the amine or ammonia per mol. of the acid present therein, and in that the catalyst is miscible in the mutual solvent to form a solution having a pH of not more than 7.  A catalyst concentration of 0.4 per cent to 2.5 per cent by weight based on the acetaldehyde is suitable.  Amines suitable for making the catalysts are primary and secondary amines such as ethylamine, butylamine, diethylamine, di-isopropylamine, di-(2-ethylhexyl)amine, N-isopropylbutylamine, dicyclohexylamine, and dibenzylamine; aminoalkanols such as diethanolamine, di - isopropanolamine and 2-aminoethylethanolamine, heterocyclic mono-and di-amines, such as morpholine, 2,5-dimethylmorpholine, piperidine, 2 - methyl - 5 - ethylpiperidine, pyrrolidine, piperazine, and 2,5-dimethylpiperazine; and alkylenediamines such as dibutyl ethylenediamine and N,N-bis(a -methylbenzyl)-ethylenediamine.  The catalyst may be pre-formed by mixing the amine and phosphoric or phosphorus acid or the components may be added separately.  The said mutual solvent may be water, in an amount of from 7-40 per cent by weight of the acetaldehyde, or a lower alkanol.  The reaction may take place under atmospheric pressure or under superatmospheric pressures of up to 500 pounds p.s.i.g.  The time of reaction may range from less than 10 minutes at 150 DEG  C. up to 24 hours at 20 DEG  C.  Detailed examples are given of the condensation of acetaldehyde, or acetaldehyde and crotonaldehyde in the presence of aminephosphoric acid catalysts to yield predominantly crotonaldehyde and sorbaldehyde with minor amounts of C8 and C10 aldehydes.ALSO:Catalysts used for aldehyde condensation comprise a mixture or reaction product of (1) a primary or secondary amine or ammonia and (2) phosphoric or phosphorus acid in proportions ranging from 0.2 mol to 2 mols of the amine or ammonia per mol of the acid present therein, which is miscible with a solvent for the reactants to form a solution having a pH of not more than 7. Suitable primary and secondary amines, aminoalkanols, heterocyclic mono and diamines and alkylene-diamines are mentioned.  The catalyst may be preformed as a mixture of the amine and phosphoric or phosphorus acid, or the amine and acid may be fed separately into the reactor.  Many examples of the catalysts are given.