baber/WOPTO huggingface dataset:
Patent GB-538988-A (GB)
Title: Method of and device for electrically measuring the thickness of foils and sheet metals
IPC: G01B7/06
Filed: 1940-02-12
Abstract: 538,988. Determining dimensions of materials; resistance measurements ; compensating for temperature errors. URMENYI, L. Feb. 12, 1940, No. 2690. [Class 37] In apparatus for measuring the thickness of foil or sheet metal by placing it between a primary coil excited by A.C. and a secondary coil and measuring the alteration of the secondary voltage due to eddy currents in the foil, changes in the temperature of the foil are compensated for by measuring the temperature of the foil electrically and correspondingly altering a compensating current or voltage. This is effected by an additional displacement of the regulating member by which the apparatus can be set for any foil thickness. As shown in Fig. 1 a resistance 16 of copper or other material of high temperature coefficient and resistances 14, 15, 17, 20 of material of low temperature coefficient such as constantan are arranged in a bridge circuit fed with A.C. from a transformer 34. The resistance 16 is placed near the foil to be measured. The sliding contact 24 of the resistance 17 is regulated by a reversible motor 21 so as to balance the bridge. The sliding contact 24 and the opposite carrier 23 of the bridge are connected through an amplifier 40 to the rotor of the motor 21, the stator being fed from the transformer 34. The regulating member 10, Fig. 2, consists of a metal screen movable between two coils, of which one, 1, is shown, by means of worm gear 25, 36. Its position is indicated on a scale 26 calibrated in foil thickness. A switch 39 is simultaneously operated by gearing 33 and regulates resistances 19, 191, 19<2> in parallel with sections of the resistance 17 and a parallel resistance 18. If the temperature of the foil being measured varies the resistance 16 changes and the bridge becomes unbalanced. The motor 21 then varies the resistance 17 to restore the balance. The resistance 17 is mounted on the edge of a disc on a spindle driven by the motor 21 as shown in Fig. 2. Rotation of this spindle simultaneously displaces the screen 10 by longitudinally displacing the spindle 27, the scale 26 not being displaced. Specification 537,551, [Group XXXV], is referred to.
Patent GB-822075-A (GB)
Title: Improvements in and relating to cinematograph and sound on film apparatus
Inventor: PRATT ALBERT STANLEY
IPC: G11B15/34
Filed: 1957-01-25
Abstract: 822,075. Film footage counting devices. RANK PRECISION INDUSTRIES (B.A.F.) Ltd. Jan, 24, 1958 [Jan. 25, 1957], No. 2718/57. Class 40 (2). [Also in Group XX] A film footage counting device for use with 16 or 35 mm. film comprises a shaft 1 driven by a motor through gearing 7 and carrying a sprocket 2 which drives a 16 mm. film. A second shaft 3, driven by gearing 5, 6, carries a sprocket 4 which is the same diameter as the sprocket 2, the gear ratio is 5 : 2 so that the sprocket 4 drives the 35 mm. film at the correct operating speed. The diameter of the sprockets is such that two turns result in a foot of film being transported. A countershaft 8 is beltdriven from the shaft 1 at a speed <SP>5</SP>/ 4  greater than that shaft so that the cam 19 makes one revolution for each two revolutions of the shaft 3 and closes the electromagnetic counter contacts once, thus registering one foot of film. For 16 mm. operation the switch 14 is moved to its alternative position in which the counter supply is controlled by the contacts 16 and 18. The contacts 18 are closed by the cam 17 twice per revolution, but only on alternate revolutions does this coincide with the closing of the contacts 16 by the cam 15 so that the counter registers one foot of film for each two revolutions of the shaft 1. Specification 795,320 is referred to.
Patent GB-472105-A (GB)
Title: Improvements in or relating to roll-film photographic cameras
IPC: G03B19/04
Filed: 1937-01-29
Abstract: 472,105. Photographic cameras. LEITZ GES., E. Jan. 29, 1937, No. 2733. Convention date, Feb. 8, 1936. [Class 98 (i)] Relates to a photographic camera of the type having its back wall and part of its bottom wall attached thereto hinged to the camera by an open hinge so that the back wall when swung open through a certain angle can be completely detached from the camera. A casing is provided, containing winding mechanism auxiliary to the normal film winding mechanism of the camera, detachably secured to the bottom wall of the camera so that when it is in position a coupling member connected to the winding mechanism within the camera is automatically brought into operative engagement with a coupling member on the camera, connected to a part of the normal film winding mechanism of the camera without disengagement of the actuating device normally controlling the operation of the camera film winding mechanism. As shown in Fig. 2, the casing F containing the mechanism is attached by means of the screw F<1>, engaging the tapped hole A<3> provided in the fixed part of the bottom wall and normally used for attachment to a tripod. When the casing is in position, the slotted member G associated with the winding mechanism in the camera engages the coupling member F<5> geared to the driving spring F4. Recesses H are provided in the casing to accommodate the levers J. Each lever is coupled to a plate K<1> with a projection K<2> engaging a knob D2 on one of the film chambers which are thus opened and closed by rotation of the levers J. One of the plates K<1> has a cam groove K3, Fig. 3, to move the plate L up and down, and by engaging pins L<2> in slots L<1>, to lock the back wall of the camera. When not in use, each lever J, Fig. 1, is slid inwards on the pin K against the action of the spring J<1> and retained by the spring detent J<3> engaging the notch J2.
Patent GB-651734-A (GB)
Title: Jewelry incorporating natural or artificial stones
IPC: A44C17/02
Filed: 1948-01-30
Abstract: 651,734. Mounting gems. EDER, J. Jan. 30, 1948, Nos. 2779, 2781 and 2783. Convention dates, Feb. 3, 1947, Aug. 14, 1947, and Jan. 6, 1948. [Class 43] To increase the brilliance of an article of jewellery a plurality of stones 3' is mounted in a cavity below and spaced from one or more main stones 1. Light-admitting apertures 6 are formed in the sides of the mounting for the stones. Fig. 3 shows a main stone 1 set in an article 2, small stones 3 being fixed in a spring mounting 8 placed in a recess below the stone 1 ; one end of a spiral spring 5 in band form is connected to a pin 4 in the base of the recess, the uppermost coil of the spring being fixed to the mounting 8. Several of these spring mountings 8 may be mounted under the main stone or stones to oscillate independently or simultaneously. The Specification as open to inspection under Sect. 91 comprises also a mounting 8, Fig. 3, (Cancelled), removably secured in a recess in an article of jewellery 2 by the engagement of a spring catch 7 in the base of the recess with a downwardly-extending projection 9 of the mounting 8, further light-admitting apertures 6 being provided in the walls of the recess. In a modification the upper end of a conical wire spring is connected to a downwardly-extending projection of a mounting, the lowest coil of the spring being secured to the base of a recess in an article of jewellery by bent-up lugs on the latter, and the surrounding walls. of the recess being bent over at the top to purevent removal of the assembly. The stones 3 may be replaced by reflecting surfaces of plain, convex or other form; they may be fluorescent, phosphorescent or opalescent. This subject-matter does not appear in the Specification as accepted.
Patent GB-1021216-A (GB)
Title: A process for obtaining esters which have a sedative and spasmolytic action from the roots and rhizomes of valerianaceae
Inventor: THIES PETER WILLIBRORD
IPC: A61K36/84
Filed: 1964-01-22
Abstract: Osovaliric acid esters are obtained from the roots and rhizomes of Valerianaceae by extracting the comminuted or powdered roots and rhizomes with a lipophilic solvent in the presence of a carboxylic acid or with a carboxylic acid alone, if desired with its corresponding alkali metal or ammonium salts as buffer, in a pH range of 3-7, at a temperature below 30 DEG  C. and isolating the isovaleric acid esters from the extract.  Examples of suitable solvents are hydrocarbons, halogenated hydrocarbons, ethers, esters, ketones or alcohols, and the preferred carboxylic acids have 2-7 carbon atoms.  Yields of up to 2% with German valerian, and 3% with Indian valerian have been obtained.ALSO:Isovaleric acid esters are obtained from the roots and rhizornes of valerianaceae by extracting the powdered or comminuted roots or rhizornes with a lipophilic solvent in the presence of a carboxylic acid or with a carboxylic acid alone, if desired with its corresponding alkali metal or ammonium salts as buffer, in a pH range of 3-7, at a temperature below 30 DEG C, and isolating the isovaleric acid esters from the extract.  Examples of suitable solvents are hydrocarbons, halogenated hydrocarbons, ethers, esters, ketones or alcohols, and the preferred carboxylic acids have 2-7 carbon atoms.  Yields of up to 2% with German valerian, and 3% with Indian valerian have been obtained.
Patent GB-413390-A (GB)
Title: Improvements in or relating to thermionic valves and circuit arrangements incorporating the same
IPC: H03G3/22
Filed: 1933-01-30
Abstract: 413,390. Thermionic valves; circuits for wireless reception. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Jan. 30, 1933, No. 2916. Convention date, Jan. 30, 1932. [Classes 39 (i) and 40 (v).] The grid-voltage anode-current characteristic of a thermionic valve is given a negative logarithmic shape (I p=-log c E g), over a working range of twenty or more volts grid bias, by varying the pitch or spacing of the grid as in the case of variable-mu valves. The valve is preferably of the screen-grid type. The Specification shows by mathematical analysis that if the bias of such a valve is varied proportionally to the input amplitude the output amplitude is constant; and that the distortion arising is constant throughout the working range and may be kept small. Fig. 4 shows an automatic volume control circuit employing the valve as a high-frequency amplifier H preceding a detector G. The bias on the grid of the valve H is varied in accordance with the amplitude of signals received on the aerial A by means of a resistance Q which is traversed by the plate current of a rectifier valve D fed from the aerial.
Patent GB-488873-A (GB)
Title: Improvements in thermionic cathodes and discharge devices employing them
IPC: H01J1/20
Filed: 1937-02-01
Abstract: 488,873. Thermionic valves. M-O VALVE CO., Ltd., BENJAMIN, M., and JENKINS, R. O. Feb. 1, 1937, No. 2935. [Class 39 (i)] The core 9 of a thermionic cathode is formed with recesses 10 into which is placed the emissive material 11, this not reaching to the tops of the recesses ; as a result the surfaces 13 remain free of the material 11 and emission only occurs in the gaps between the turns of the grid 12. The ends of long cathodes are similarly protected by ridges on the core.
Patent GB-1461150-A (GB)
Title: Process for the manufacture of y,gamma-unsaturated carbonyl  compoounds
IPC: C07C45/00
Filed: 1974-07-04
Abstract: 1461150 γ,#-Unsaturated carbonyl compounds F HOFFMANN-LA ROCHE & CO 4 July 1974 [5 July 1973] 03293/76 Divided out of 1461149 Heading C2C  γ,#-Unsaturated carbonyl compounds of the general formula wherein R<SP>1</SP> represents (a) a saturated hydrocarbon group, (b) an unsaturated hydrocarbon group, (c) an aralkyl group, (d) an aryl group or (e) an oxygen-containing derivative of (a), (b) or (c) in which the oxygen is in the form of a free hydroxy group, an esterified hydroxy group (the esterifying group being an acyloxy group in which the acyl moiety is derived from a lower (C 1 -C 7 ) alkanoic acid or benzoic acid) or an etherified hydroxy group comprising a lower (C 1 -C 7 ) alkoxy or phenyloxy group and in which the oxygen atom is attached to an aliphatic carbon atom on said group, R<SP>2</SP> represents a lower (C 1 -C 8 ) aliphatic (cyclic or acyclic) hydrocarbon group and R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP> each represent a hydrogen atom or a lower (C 1 -C 8 ) aliphatic (cyclic or acyclic) hydrocarbon group and wherein R<SP>1</SP> and R<SP>2</SP> together can form a carbocyclic ring and R<SP>4</SP> and R<SP>5</SP> to gether can form a carbocyclic ring, are prepared reacting a tertiary allyl alcohol of the general formula with an acetal or ketal of the general formula wherein R<SP>6</SP> represents a straight-chain or branched-chain alkyl group containing from 1 to 20 carbon atoms, in the presence of an acid catalyst system containing a strong acid while maintaining in the reaction mixture a substantial excess of said ketal or acetal as compared with said tertiary allyl alcohol, from 3 to 100 moles of said ketal or acetal being present per mole of said tertiary allyl alcohol. The ketal or acetal and the allyl alcohol may be added incrementally with the acetal or ketal in excess. The acid catalyst system may comprise both a strong acid and a weak acid. An example prepares 6-methyl-5-hepten-2-one. Reference has been directed by the Comptroller to Specification 981,702.
Patent GB-1417542-A (GB)
Title: Theophylline 7acetate salts
IPC: C07D217/10
Filed: 1974-01-24
Abstract: 1417542 1 - Benzyl(or benzal) - tetrahydro- Isoquinolinium theophylline-7-acetates CHINOIN GYOGYSZER ES VEGYESZTI TERMEKEK GYARA RT 24 Jan 1974 [25 Jan 1973] 03299/74 Heading C2C Novel compounds of the Formula I wherein each R independently is hydrogen or C 1-10  alkoxy and Z and X each is hydrogen or together form a valency bond may be prepared by salt formation from the appropriate acid and base. Pharmaceutical compositions of the compounds I with the usual excipients show spasmolytic: and hypotensive activity and inhibit convulsion caused by electric shock when administered orally, parenterally or rectally.
Patent GB-1220731-A (GB)
Title: Deep fat pressure cooker
Inventor: ROGERS RAYMOND WAYNE
IPC: A47J27/08
Filed: 1968-01-22
Abstract: 1,220,731. Pressure cooker. R. G. WILSON. 22 Jan., 1968, No. 3342/68. Heading B1X. [Also in Division F2] A deep fat pressure cooker comprises a cover 26 connected to a central shaft B which passes through the base of the pot 10, which shaft is moved vertically by a motor M which is connected to rotate tube F and thus rotate screw 45, which screw engages nut 46 fixed to shaft B. Cover 26 can thus be moved to three positions by motor M corresponding to (1) an upper position for removal of a mounting of foraminous basket D which is supported on shaft B, (2) a middle position when the lower part of basket B is submerged in cooking fat, and (3) when cover 26 is tightly sealed to pot 10. Fat can be drawn off at 47, passed through filter 50 and recycled to the cooker. Compressed air can be supplied to the cooker from a motor (CO) (Fig. 3, not shown). A safety latching mechanism is illustrated in Fig. 2A (not shown) which rotates rod 72 into a released position when the pressure in the pot falls below a safe pressure.
Patent GB-1010425-A (GB)
Title: Bleaching material containing protein
Inventor: STEINHOFF VICTOR
IPC: D06L4/15
Filed: 1962-08-31
Abstract: An aqueous solution of performic acid is produced by the reaction of an aqueous solution of formaldehyde with an aqueous solution of hydrogen peroxide in the presence of 0.3-30% with reference to the total weight of the anhydrous formaldehyde and hydrogen peroxide to be reacted, of an organic or inorganic acid or a salt thereof, e.g. sulphuric, phosphoric, formic, acetic, lactic, maleic, citric or tartaric acid, as a catalyst.  The solution may be stabilized by the addition of tetrasodium pyrophosphate, magnesium silicate, magnesium phosphate, complex magnesium-alkali metal salts of nitrilotriacetic acid, ethylene diamine tetracetic acid or hexamethylene diamine tetracetic acid, acetamide, formamide, alkali metal, citrates, ammonium citrate or maleic anhydride.  Specifications 656,938, 804,781 and 810,439 are referred to.ALSO:Protein-containing materials, e.g. wool, silk, leathers and hog's bristles, are bleached by treating them with a liquor having a pH value of 2-8.5 comprising aqueous performic acid solution which has been prepared by the reaction of aqueous formaldehyde solution and aqueous hydrogen peroxide solution in the presence of 0.3-30% with reference to the total weight of the anhydrous formaldehyde and hydrogen peroxide to be reacted, of an p  organic or unorganic acid or a salt thereof, e.g. sulphuric, phosphoric, formic, acetic, lectic, citric, maleic and tartaric acids, as a catelyst.  The bleaching solution may be stabilised by the addition of tetrasodium pyrophasphate, magnesium silicote, magnesium phosphate, complex magnesium-alkali metal salts of aminocarboxylic acids which have more than one carboxylic group to one basic nitrogen, e.g. nitrilotriacetic acid, ethylene diamine tetracetic acid or hexamethylene diamine tetracetic acid, acetamide, formamide, alkali metal citrates, ammonium citrate or maleic amhydride, and may be adjusted to the desired pH value by the addition of ammonium or sodium carbonate.  The treating solution may also contain optical bleaches e.g. 4, 5-diphenyl imidazolene disulphonate softeners and wetting agents, e.g. an octa or nonyl phenol polyglycol ethers.  When working with a long liquor the material may be introduced into the bleaching liquor at 40 DEG -50 DEG C. and treated for 2-4 hours at 50 DEG C.  Piece goods may be treated by a batchwise or continuous padding method in which they are impregnated on a padding machine with the bleaching liquor, squeezed, rolled up, wrapped in a waterproof sheet and then left for 10-15 hours at 15 DEG -25 DEG C. or for 2 hours or less at temperatures of 50 DEG C or higher, or after impregnation are introduced at open width into a steamer where they are allowed to remain for a few minutes.
Patent GB-585141-A (GB)
Title: Lamp mounting
IPC: B60Q1/04
Filed: 1945-02-10
Abstract: 585,141. Vehicle lamp supports. GUY MOTORS, Ltd., and COLLINGS, C. H. Feb. 10, 1945, No. 3372. [Class 75 (iii)] A vehicle or other lamp a is mounted on a bracket d which is pivoted at e to a fixed panel b and is normally secured to the panel by screws h. On removing the screws h the lamp can be swung forwards through an opening c in the panel to a position allowing access to the beam adjustment means i and to the cables k and cable connections l.
Patent GB-672544-A (GB)
Title: Improvements in wringers
Inventor: LEVENSON GERALD ISAAC PASTERNA
IPC: D06F45/00
Filed: 1950-02-09
Abstract: 672,544. Wringers. KODAK, Ltd. Feb. 9, 1961 [Feb. 9, 1950], No. 3376/50. Class 138 (ii). A wringer comprises a pair of driven rollers 1, 2, each roller having spaced peripheral grooves each accommodating an endless band 7 of compressible material, e.g. rubber, which is passed round said roller and a second auxiliary roller 5 or 6. The two sets of endless bands are preferably staggered and the bands are of truncated V section. The auxiliary rollers may or may not be grooved. The bands preferably project slightly above the surfaces of rollers 1 and 2 so that in the nip of the rollers the bands are compressed and lie flush with the roller surface.
Patent GB-753547-A (GB)
Title: Improvements in or relating to matrices for type-casting machines
IPC: B41B11/00
Filed: 1954-02-05
Abstract: 753,547. Type-bar making machines. LINOTYPE GES. Feb. 5, 1954 [Feb. 9, 1953], No. 3483/54. Class 100 (3). [Also in Group XXII] Matrices.-A matrix is placed with its type impression bottom on precise positioning points to determine a reference line in the plane of the bottom of the impression, clamped in this position, machined on one narrow longitudinal side to exactly dimension it with relation to the reference line, and then turned and its other longitudinal side machined. A matrix 4 is located on a rubber buffer 2 on a support 1 which is raised until needles 10, 11 on a carrier 12 rest against the bottoms of the stamped character cavities 8, 7. The matrix is then clamped between two lateral jaws, the carrier 12 raised, and a milling cutter moved forwards to machine the type impression edge 9 accurately with reference to the bottoms of the cavities. Alternatively, the matrix can be moved past the cutter. The matrix is then supported on the machined edge and the opposite edge is machined.
Patent GB-946693-A (GB)
Title: Reinforced nonwoven fabrics and methods and apparatus for making the same
Inventor: L HOMMEDIEU PAIGE DRAKE
IPC: D04H1/4266
Filed: 1961-01-30
Abstract: 946,693. Laminates and laminating. CHICOPEE MANUFACTURING CORPORATION. Jan. 30, 1961, No. 3484/61. Heading B5N. A reinforced non-woven fabric comprises a fibrous web having groups of substantially parallel fibres 21, Fig. 7, arranged in a pattern of holes 22 and intertwined with each other, as at points 26, and with a reinforcement of open-mesh fabric of interwoven or adhesively connected warps and wefts 28, 29, or of longitudinal or lateral parallel threads, or of knitted, crocheted, or lace construction. The fibres may be wood fibres of 1-8 mm. length, or fibres, of 1-12 mm. or longer, of cotton, silk, wool vicuna, mohair, alpaca, flux, ramie, jute, abaca, or mineral or like fibres, e.g. of asbestos, glass, rook wool, or metal, or synthetic or man-made fibres, e.g. of regenerated cellulose, cellulose esters, polyamides, proteins, polythene, polypropylene, polyisobutylene, P.T.F.E., or polyesters, or nitrile, vinyl or acrylic fibres, or mixtures of any of the above. The fibres may also be such as are capable of curling, bending, stretching, shrinking or otherwise deforming after incorporation in the reinforced material. The reinforcement fabric may consist of any of the above fibres, and the threads thereof may be disposed diagonally. In a modification the reinforcement may be warpless, weft threads being laid manually on the fibrous web. The product may be made by passing a fluid, preferably water, through superposed webs of fibrous material and reinforcement, preferably while these are enclosed between foraminous sheets. As shown in Fig: 1 a web 34 of fabric reinforcement is forwarded by an endless belt 36 in contact with, or between, one or two fibrous webs 30, 30a, similarly forwarded. The combined web is passed between a foraminous endless belt 38, e.g. of nylon fabric or wire mesh, and a perforated drum 44, and is subjected to jets 54 of water which passes through the fibrous layer or layers whereby the fibres are carried between and around the threads of the reinforcement and spread out generally in the plane of the webs. The belt 38 is tensioned to compress the webs, and water is drawn off through a suction box 60. In a modification the drum 44 is replaced by a second perforated endless belt, the water jets being directed downwardly and the suction box being placed immediately beneath them on the underside of the belts. Specification 836,397 is referred to.
Patent GB-968693-A (GB)
Title: Refractory nozzle for the teeming of molten metal
Inventor: COWLING KENNETH WINTER
IPC: B22D41/50
Filed: 1961-01-30
Abstract: 968,693. Refractory pouring nozzles. THOMAS MARSHALL & CO. (LOXLEY) Ltd. Jan. 30, 1962 [Jan. 30, 1961; July 27, 1961], Nos. 3492/61 and 27265/61. Heading F4B. A composite refractory nozzle consists of a shell or body which has either a tubular insert at the bore or a tubular head forming the bore or a part thereof, the insert or head being formed of a chemically bonded unfired magnesite optionally containing also materials which react together exothermically such as powdered aluminium and iron oxide. The nozzle bore may be completely formed by the tubular insert, as shown in Fig. 1, partially formed by the insert as in Fig. 4, or the nozzle may have a separate head forming part of the bore as in Fig. 2. The nozzle shell may be formed from refractory material having a lower thermal conductivity than that of the insert or head. Reference is made in the first Provisional Specification to Specification 904,526.