baber/WOPTO huggingface dataset:
Patent GB-1073647-A (GB)
Title: Reactance amplifier or mixer
Inventor: GLANC ANTONIN
IPC: H03F7/04
Filed: 1964-08-31
Abstract: 1,073,647. Parametrically-excited circuits. CESKOSLOVENSKA AKADEMIE VED Aug. 31, 1964 [Aug. 31, 1963], No. 35543/64. Heading H3B. A parametrically-excited tuned circuit for amplification or mixing uses a non-linear ferroelectric capacitor the dielectric of which is heated from the pumping frequency source, the elevated operating temperature being near the Curie point of the dielectric so as to emphasize the non-linear properties and provide a wider frequency range by lowering the dielectric constant and the dielectric hysteresis loss. In Fig. 1 a resonant circuit 8, 9 is tuned to the signal frequency #s from a source 6 and is coupled by a buffer capacitor 10 to a non-linear ferroelectric capacitor 1. Heating of the ferroelectric dielectric is effected by current at the pumping frequency f P  from a pumping source 3, the heating current being adjusted to the required value by a variable capacitor 4. The frequency relationship f p =2f s  is used and an output of frequency f s  is obtained at terminal 15. The circuit includes a leakage resistor 11 which is connected across capacitor 1 either directly or in series with a bias source 13. In a modification, Fig. 2 (not shown), a different relationship between # p  and # s  is used, and an output # p  + # s  or # p  - # s  is provided in an auxiliary circuit which is coupled to a tuned circuit 16, 17, Fig. 3, in series with capacitor 1. A ferroelectric capacitor of the kind described in Specification 1,053,114 and consisting of two condensers 1, 2 one of which indirectly heats the dielectric of the other is used in Fig. 3, the condenser 2 being adjustably energized from the pumping source through a variable transformer 5.
Patent GB-1037746-A (GB)
Title: Improved grating for air-cooled store rooms
IPC: E04B9/02
Filed: 1963-09-09
Abstract: 1,037,746. Ventilators. GOTAVERKEN A.B. Sept. 9, 1963 [Sept. 10, 1962], No. 35558/63. Heading F4V. Cold air is supplied to store rooms through a grating comprising parallel wooden bars 1 nailed to supporting beams 2 and connected by spacers 4 formed of a material not affected by moisture and accommodated in grooves 3, Fig. 3 (not shown), in the bars 1, the depth of the grooves being such that swelling of the bars in moisture may occur without deforming the elements. Some or all of the spacers have air flow apertures 5 and may be formed of sheet metal, synthetic plastics, or a cross-laminated veneer.
Patent GB-997222-A (GB)
Title: Improvements in and relating to cathode ray tube apparatus
IPC: H03K4/62
Filed: 1961-10-02
Abstract: 997,222. Converting. PHILCO CORPORATION. Oct. 2, 1961 [Sept. 30, 1960], No. 35560/61. Heading H2F. [Also in Divisions H3 and H4] A cathode ray tube apparatus comprises a transistorized horizontal deflection output stage, a deflection inductor connected to the output of the transistor of said stage, an E.H.T. transformer for supplying beam current to the tube and connected to the stage, a capacitor and a semi-conductor switching device arranged to allow the capacitor alternately to charge from a D.C. supply and to discharge into said inductor under control by pulses from said E.H.T. transformer. As shown in Fig. 5, the horizontal output stage comprises a transistor T 0  associated with the deflection inductor L. A picture tube high voltage supply transformer T h  is included. The D.C. supply is derived from A.C. via a diode D 1  and smoothed by a capacitor C fe . The transistor T constitutes the semi-conductor switching device, which operates on pulses derived from the transformer T h , and allows the capacitor C to charge from the D.C. supply and discharge into the inductor L. During part of the operating cycle diode D conducts and a low voltage D.C. supply is derived at E L . In further embodiments, (a) the inductor L is linked to the capacitor C by an additional winding on transformer T h  (Fig. 8, not shown); (6) the transistors T and T 0  are duplicated (Fig. 9, not shown) and (c) a diode D 2  connected to an additional winding on the transformer T h  to provide stabilization (Fig. 7, not shown), Figs. 1-4 (not shown) are circuits explaining the functions of various parts of the invention.
Patent GB-1521287-A (GB)
Title: Membrane filtration apparatus
IPC: B01D63/06
Filed: 1975-08-28
Abstract: 1521287 Membrane filtration WAFILIN BV 28 Aug 1975 [30 Aug 1974] 35612/75 Heading B1X A membrane filtration apparatus comprises a plurality of tubular filtration units extending between an inlet manifold and an outlet manifold therefor, each unit having inlet and outlet end portions connected to said inlet and outlet manifolds respectively and comprising a fibrous tube provided with a filtration membrane on its inside surface and mounted in a support tube having permeate discharge openings, and sealing means sealing the connections between the inlet and outlet end portions of the tubular filtration units and their respective manifolds, said sealing means being formed of elastomeric material and comprising a tubular portion fitted in each respective end portion to provide an interference fit therewith which is sufficient to maintain sealing engagement with the membrane of the respective end portion during use of said apparatus at operating pressures. As shown, each module consists of a support tube 4 containing a non-woven fibrous tube 7 which in turn contains a membrane 8 e.g. of cellular acetate, and extends between manifolds 1 and 2. The sealing member 9 of flexible elastomeric material includes integral tubular portions 10 which fit in the ends of the tubes. The apparatus is used for the purification of (unspecified) liquids.
Patent GB-1090921-A (GB)
Title: Information storage devices
Inventor: DAVIS PAUL FRANK
IPC: G11C19/08
Filed: 1963-09-10
Abstract: 1,090,921. Magnetic data storage apparatus. ENGLISH ELECTRIC CO. Ltd. Sept. 10, 1964 [Sept. 10, 1963], No. 35683/63. Heading H3B. A magnetic information storage device consists of a stationary thin film of ferromagnetic material on a non-magnetic backing member, the film being capable of existing as a single magnetic domain in the absence of an applied magnetic field, recording means for creating a plurality of domain boundaries in the film, driving means for causing the boundaries to move along the film, and reading means responsive to the presence of domain boundaries adjacent thereto. The film is formed with a plurality of zones 15. When a domain boundary 18 is created by the recording means it is transferred from zone to zone by an alternating magnetic field, the strength of which is sufficient to drive the boundary from the wide end of one zone to the narrow end of the next but insufficient to return it on the opposite halfcycle. The period of each cycle of the driving field, the field strength and the zone length are selected so that a boundary moves a distance greater than the length of a zone during a halfcycle. The rate of operation is such that there is one domain boundary to every consecutive pair of zones. The information may be erased by weakening the driving field to allow the boundaries to catch up with each other than applying a strong field to annihilate the boundaries. In a modification, the film has straight edges but contains rows of triangular holes. In Fig. 4 (not shown), two paths as in Fig. 2 join with a third similar path. Information from either of the first paths cannot alone enter the third path, but the boundaries in the first two paths together can combine at the junction and continue as one boundary. Such an arrangement may be used in a binary adder. The reading means in each case may be an electrical device or may use polarized light to detect the boundaries. The storage device may be a flat strip or may form a circumferential or helical path on a drum. The storage devices may be stacked with their ends spaced to accommodate the recording and reading heads. Reference has been directed by the Comptroller to Specification 857,289.
Patent GB-806441-A (GB)
Title: Improvements in or relating to vibratory conveyors, sieves and the like
IPC: B07B1/28
Filed: 1954-12-09
Abstract: 806,441. Sifting apparatus. ROWNSON, DREW & CLYDESDALE, Ltd., and MARRIOTT, J. A. March 9, 1956 [Dec. 9, 1954], No. 35687/54. Class 117 [Also in Group XXX] In apparatus having one or more sieves 1, 2 supported by sets of inclined leaf springs 6, 8, the means connecting the sieves to the driving mechanism includes one or more hydraulic devices 41, 43, each of which comprises a piston and cylinder apparatus and valve means which permit the supply of presure fluid to, or the discharge of pressure fluid from, the cylinder so as to allow relative movement of the piston and cylinder when the thrusts tending to produce such relative movement exceed a certain value. The driving eccentrics 31, 33 are connected by rods 21, 23 to levers 11, 13 which are pivoted at one end to the sieves and at the other end to the cylinders of the hydraulic devices 41, 43. Each device 41, 43 comprises a piston 60, Fig. 4, working in a cylinder 61 filled with oil. A reservoir 64 for oil surrounds the cylinder 61. The piston 60 is carried by a rod 66 which is movable in a gland 65 forming a closure for the reservoir 64. The piston divides the cylinder 61 into chambers 67, 68, the volume of each of which is varied by movement of the piston. The transfer of fluid between the chambers 67, 68 and between the chamber 67 and the reservoir 64. is controlled by a number of spring-loaded non-return valves.
Patent GB-366190-A (GB)
Title: Improvements in or relating to microscopes
IPC: G02B7/14
Filed: 1930-11-27
Abstract: 366,190. Mic:roscopes. HARTRIDGE, H., St. Bartholomew's Hospital Medical College, Smithfield, London. Nov. 27, 1930, No. 35706. Drawings to Specification. [Class 97 (i).] The optical equipment of a microscope, e.g. lenses, stops, filters, &c., is changed. by the operation of a. handle, pedal, switch, &c., connected to the said equipment by suitable means which may be mechanical, electrical or pneumatic. For example, a handle may be connected by rigid or flexible means to a pivoted arm on which the optical part is mounted, or the handle may control the valve of a pneumatic device operating the arm, or a switch may be provided in connection with an electromagnet for moving the arm.
Patent GB-941746-A (GB)
Title: Process for the concentration and desalting of dilute, saltcontaining sulphuric acid
IPC: C01B17/88
Filed: 1961-10-04
Abstract: Sulphuric acid is concentrated and desalted by admission of dilute acid to an evaporator, continuous removal of the acidic suspension, and filtering off the salts from the concentrated acid and partial recycling of the concentrated acid to the dilute initial acid solution, characterized in that the amount of concentrated acid recycled to the dilute acid is such that the salt content of the suspension in the evaporator does not amount to more than about 1000 grams per litre.  An acid containing 16-22% H2SO4 may be concentrated to 63-68% H2SO4, and the salt concentration in the evaporator preferably does not exceed 700-900 grams per litre.  The amount of acid added to the salt solution is equal to the amount of salt suspension drawn off from the evaporator. Salts referred to are: ferrous sulphate and sulphates generally.ALSO:Sulphuric acid is concentrated and desalted by admission of dilute acid to an evaporator, continuous removal of the acidic suspension, and filtering off the salts from the concentrated acid and partial recycling of the concentrated acid to the dilute initial acid solution, characterized in that the amount of concentrated acid recycled to the dilute acid is such that the salt content of the suspension in the evaporation does not amount to more than about 1000 grams per litre.  An acid containing 16-22% by weight H2SO4 may be concentrated to 63-68% H2SO4, and the amount of solid material in the evaporation should preferably not exceed 700-900 grams per litre. The amount of acid added to the salt solution is equal to the amount of salt suspension drawn off from the evaporator.  Salts referred to are: ferrous sulphate and sulphates generally.
Patent GB-425355-A (GB)
Title: Improvements in or relating to flexible abrasive articles and processes of making the same
IPC: C08L1/00
Filed: 1933-06-07
Abstract: A presizing solution for sandpaper &c. comprises a cellulose derivative and an oil, a specific example comprising nitrocellulose, chinawood oil, castor oil and ester gum in mineral spirits and the material known under the Registered Trade Mark "Butyl Cellosolve." Solutions of cellulose acetate combined with oils, with or without pigments or fillers, may also be employed.  Specifications 425,350 and 425,356, [both in Group XXIII], are referred to.
Patent GB-1143316-A (GB)
Title: Voltage stabilizers
IPC: G05F1/445
Filed: 1967-08-04
Abstract: 1,143,316. Automatic voltage control. GENERAL PRECISION SYSTEMS Inc. Aug. 4, 1967 [Aug. 10, 1966], No. 35898/67. Heading G3R. An A.C. voltage stabilizer comprises input terminals 13, 13a; output terminals 14, 14a; a continuously variable impedance 21, constituted by parallel-connected transistors 35, 36 connected between terminals 13, 14 and so associatedwith a diode bridge 31, 32, 33, 34 that current passes through the transistors in one direction only regardless of the instantaneous polarity of the A. C. input: and a control circuit 22 which automatically varies the value of the impedance in a sense to correct for output voltage variations. As shown, the control circuit 22 includes a transformer having a secondary winding 48 from which is derived a signal representative of the output voltage at terminals 14, 14a; this signal is compared, in a differential amplifier 64, 65, with a reference voltage derived from a Zener diode 82, and the resulting error signal is applied by way of a further transistor 60 to the base electrodes of transistors 35, 36, whereby the required control is effected. A fixed impedance 20, 20a may be connected across the variable impedance 21, and the voltage applied to these impedances may be stepped-up by an auto-transformer 12.
Patent GB-1170368-A (GB)
Title: Apparatus for Removably Connecting a Branch Pipe to a Pipeline
Inventor: ZHUK ZINOVY YAKOVLEVICH
IPC: F16L37/096
Filed: 1967-08-04
Abstract: 1,170,368. Branch pipe couplings. VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUT SELSKOKHOZYAISTVENNOGO MACHINOSTROENIA. 4 Aug., 1967, No. 35967/67. Heading F2G. A device for removably connecting a branch pipe to a pipeline comprises a pipe union and at least one auxiliary pipe 1 adapted to connect two intermediate ends of the pipeline and having a side aperture 4, a pivotally mounted, spring-loaded valve 8, a guide 37 for receiving a slide 36 of the pipe union being connected to the branch pipe and a valve-actuating member 11 entering into the guide through an aperture in the guide. When the slide 36 of a pipe union 27 connected at 30 to the branch pipe is entered into the guide the member 11 pivots the valve to open the aperture 4 which then receives the pipe union. As shown, the device consists of two similar auxiliary pipes 1, 5, each including a valve and a pipe union interconnected by a handle 29; the extensions 21, 22 have annular recesses (23), (24) for sealing rings (25), Fig. 5 (not shown), and a spring-loaded retainer 39, Fig. 4, located between the pipe union is receivable in an aperture 42 to retain the device in the guide.
Patent GB-1150153-A (GB)
Title: Dry Strip Decalcomania or Transfer
Inventor: JAHP CLIFFORD JOHN
IPC: B44C1/16
Filed: 1966-08-11
Abstract: 1,150,153. Transfers; transferring designs. MEYERCORD CO. 11 Aug., 1966, No. 36074/66. Heading B6C. A decalcomania comprises a pair of superimposed indicia carrying, 12, Fig. 1, and backing sheets, 17, Fig. 3, with a layer of pressuresensitive adhesive material 16 therebetween, and indicia 13 at the outermost side of sheet 12, backing sheet 17 being readily strippable from the adhesive 16, there being die cuts for separating the indicia area of the decalcomania from surrounding waste material, the cuts extending fully through the backing sheet and entirely around the periphery of the indicia, and also extending fully through the indicia carrying sheet and around the periphery of the indicia except for a plurality of uncut connecting portions 22 spaced around the periphery of the indicia for disruptably connecting the indicia portion of sheet 12 to the surrounding waste material. Sheet 12 may be an organic plastics material, e.g. polyvinyl chloride or polyester, and the indicia may be an imprinted letter or numeral. The indicia are affixed to a surface by removing the indicia portion 25, of the backing sheet, pressing the exposed adhesive 16 against the surface and then removing the laminated waste material 14, 27. The connecting portions 22 may be V-shaped in cross-section with the apex of the V disposed toward the backing sheet. The decalcomania may be produced by impressing die cuts in the laminate 12, 16, 17 from the backing sheet side using a die having the same shape as the bounding edges 15 of the indicia 13, the die being provided with a plurality of V-shaped recesses in its elongated cutting edges of a depth equal to the thickness of indicia carrying sheet 12. The uninterrupted lengths of cutting edge cut through backing sheet 17, adhesive 16 and indicia carrying sheet 12, and the recessed areas cut through the sheet 17 but not through indicia carrying sheet 12.
Patent GB-367070-A (GB)
Title: Improvements in chimneypieces or surrounds, hearths and curbs for use with domestic fireplaces and the like
IPC: F24B1/198
Filed: 1930-12-03
Abstract: 367,070. Tiles for fireplace surrounds &c. SMITH & SONS, Ltd., S. and SMITH, S., Beehive Foundry, Smethwick, Staffordshire. Dec. 3, 1930, No. 36397. [Class 87 (i).] A tiled fireplace surround is formed in sections including sides 2, 3 and a top each composed of tiles slabbed with a concrete or like backing which engages the outer edges of the tiles and forms a moulding 7 round them. Further, a surround hearth, or curb is formed of tiles slabbed with a concrete backing which extends over the front surface of the outer tiles near their outer edges, as shown particularly at 8, Fig. 3, Attachment members 16 may be cast in the concrete, and wedge-shaped wooden members 10 may also be moulded in it to receive screws or nails for securing a mantelshelf 11, Fig. 3. The concrete may be coloured before or after casting.
Patent GB-1434370-A (GB)
Title: Ceramic sheel mould
IPC: B22C1/16
Filed: 1973-08-01
Abstract: 1434370 Moulding ceramic shell moulds ZIRCONAL PROCESSES Ltd 26 Sept 1973 [1 Aug 1973] 36641/73 Heading B5A A method of making a ceramic shell mould comprises coating a wax pattern with a dispersion of a finely divided refractory powder in an aqueous alcoholic solution of an aluminium hydroxyhalide of formula when n is 4 or 5 m is less than 4 and X is a chlorine, bromine or iodine atom, dusting the wet coating with a coarse refractory material and then hardening the coating by the action of gaseous ammonia. These steps may be repeated until a shell of the desired thickness has been built up, or the once-coated pattern may be surrounded with a slurry of refractory material in a binding agent; suitable materials being described in Specification 753,228. The moulds are fired after removal of the wax to remove residual organic material or mature the bond. The preferred binding solution is a solution of aluminium chlorohydrate in aqueous ethyl alcohol, and one example describes the production of a shell mould which does not contain silica from the above binding solution with dispersed alumina, tabular alumina being used to dust the wet coating. Other refractory materials which may be used are zircon flour, Molochite (silica) for the finely divided dispersed refractory and zircon sand, Molochite, Nalcast (fused silica) as the coarse dusting refractory. Specification 1,427,708 describes the preferred aluminium hydroxyhalide solutions.
Patent GB-874225-A (GB)
Title: Improvements in or relating to apparatus for handling radio active materials for usein charging and/or discharging a vessel such as the pressure vessel of a nuclear reactor
Inventor: BELLINGER RONALD
IPC: G21C19/02
Filed: 1956-11-30
Abstract: 874,225. Winding. STRACHAN & HENSHAW Ltd. Nov. 26, 1957 [Nov. 30, 1956], No. 36776/56. Class 78 (5). [Also in Groups XXIV, XXIX, XXXIV and XL (a)] An arrangement for ensuring that a cable 142 extending from a winding drum 360 to a pulley 134 is kept opposite the pulley groove as the drum rotates by causing the drum to move axially at a speed proportional to its rotational velocity, comprises a sleeve 372 on the drum keyed to the drive shaft 366 so as to be slidable thereon. The shaft 366 is supported in bearings 390, 392 and rotatably supports on bearings 384 a sleeve 382 having an internal helical cam groove 386 engaged by a roller 380 on the sleeve 372. The sleeve 382 has an internally toothed gear 388 driven by one gear of a double pinion 396, the other pinion being driven by a gear 398 secured to the shaft 366. Thus the sleeve 382 is rotated at differential speed with respect to the shaft 366 to cause axial movement of the roller 380.
Patent GB-1076133-A (GB)
Title: Package for the storage of remedies to be administered by injection
Inventor: HASSING VAGN
IPC: A61J1/00
Filed: 1964-09-09
Abstract: 1,076,133. Surgical injection apparatus. NOVO TERAPEUTISK LABORATORIUM A.S. Sept. 19, 1964 [Sept. 18, 1963], No. 36847/64. Heading A5R. A package for the storage of remedies to be administered by injection includes a sealed container 20 holding a sterile remedy in dry and solid form and another container which constitutes the barrel 9 of an injection syringe and holds a sterile injection medium in which the solid remedy can be dissolved or suspended for injection and which is of itself inactive. The package also includes a plunger shaft 8 for the syringe and an injection needle 12 which in the package is contained within the plunger shaft. The injection syringe is disposable and is made of a plastics material. As illustrated in Fig. 1 (not shown), the package holds the components and remedies for a single syringe; in another embodiment, Fig. 6 (not shown), the package holds the components and remedies for ten syringes.
Patent GB-1064374-A (GB)
Title: Improvements in rotary machines comprising an electric motor and hydrodynamic bearings
IPC: F04D29/04
Filed: 1963-09-19
Abstract: 1,064,374. Bearings. SOCIETE RATEAUSept. 19, 1963 [Sept. 20, 1962], No. 36976/63. Heading F2A. [Also in Division H2] The stator (3) of an electric motor, Figs. 1 and 2 (not shown), is eccentrically offset, with respect to the bearings (1a) and (1b) of a rotor (2), in a vertical plane passing through the axis of the bearings, so that the resultant magnetic forces (M) at least partly balance the weight (G) of the rotor to facilitate starting. The bearings (1a) and (1b) are dynamic gas or liquid bearings. The eccentricity of the stator may be fixed or variable.
Patent GB-368822-A (GB)
Title: Improvements in or relating to the preservation of fruit
IPC: A23B7/16
Filed: 1930-12-09
Abstract: Apples, tomatoes, citrus and other fruit are preserved by coating with a film containing a monovalent alkali ichthyosulphonate, preferably the ammonium salt.  Suitable carriers for the salts are non-drying oils or fats such as petroleum jelly or lanoline, glycerine, or a drying liquid such as an albumen or a solution of gelatine or a vegetable gum.  The film may be applied by dipping, spraying, brushing, &c.  The treated fruit may be wrapped in paper before packing.