baber/WOPTO huggingface dataset:
Patent GB-748235-A (GB)
Title: Improvements in and relating to means for ascertaining the presence of moisture
Inventor: PALMER GARETH EDWARD JAMES
IPC: G01N27/22
Filed: 1953-10-23
Abstract: 748,235. Measuring humidities electrically. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 25. 1954 [Oct. 23, 1953], No. 29368/53. Class 40(1) Apparatus for 'determining the moisture content of an atmosphere comprises an A.C..bridge circuit having a humiditysensitive resistance element in one arm, in parallel wth a fixed capacitor. In one embodiment (Fig. 1) the sensitive element consists of a conductor 10 embedded edgewise in an insulating member 11 with a conductive coating 12 on part of the surface, so that deposited moisture alters the resistance of the element to produce corresponding values of unbalance current. In another embodiment (Fig. 4) the conductor 15 is cup-shaped and is fitted with a similarly shaped insulating member 17 having a metal coating 18.
Patent GB-434056-A (GB)
Title: Improvements relating to lubricants
IPC: C07C29/149
Filed: 1934-10-13
Abstract: Lubricants which withstand high pressure consist of a hydrocarbon oil, a soluble lead compound and "corrosive" sulphur, the ratio of lead to "corrosive" sulphur being not substantially less than 6 to 1. "Corrosive" sulphur is that form which will discolour a copper surface, and the amount of "corrosive" sulphur in a compound is measured by the diminution of the sulphur contents which takes place by reaction with finely-divided metals such as copper, iron or mercury.  Heavy petroleum residues may be used as base oils. Suitable sulphur-containing materials are elementary sulphur, synthetic organic polysulphides preferably penta - sulphides or higher polysulphides, sulphurized mineral, animal, vegetable or marine oils, such as lard oil, pine oils or fish oils.  Suitable lead compounds are lead oleate, naphthenate or sulphonate or mixtures of these, or the lead salt of an acid derived by oxidation of paraffin or other hydrocarbon wax.
Patent GB-846870-A (GB)
Title: Improvements in or relating to a method and device for grading photographic negatives for printing
Inventor: ASTON KEITH
IPC: G03B27/72
Filed: 1955-10-14
Abstract: 846,870. Photo electric determination of exposure for printing photographic negatives. PHOTO-CHEMICAL CO. Ltd. Oct. 12, 1956 [Oct. 14, 1955], No. 29384/55. Class 40(3). A method of grading negatives by passing light through them on to a photo-electric cell to produce simultaneously a plurality of signals exponentially related to areas of the negative of printable or less than printable density and a plurality of signals linearly related to areas of the negative of greater than printable density (see Fig. 2), the sum of all the signals being a measure of the exposure required in printing the negative. Light from a bulb 2 passes through a heat filter 3, condenser lenses 4, 4 1 , either a red blue or green filter, 6, 7, 8 and a coloured negative 9 under test to fall on a circular photo-cell, the transparent conductive surface and photo-sensitive selenium layer of which are scored into sectors 12 each giving separate responses to different areas of the negative. The sectors are each connected in series to resistances 17 and in parallel to a galvanometer 14. The negative is in turn inspected through each colour filter to give galvanometer readings representing the mean of the light intensities transmitted to each sector 12 of the cell. A number of photo-cells may replace the scored cell.
Patent GB-798660-A (GB)
Title: Improvements in and relating to ignition contact breakers
IPC: H01H1/26
Filed: 1956-09-26
Abstract: 798,660. Interrupters. MALLORY METALLURGICAL PRODUCTS, Ltd., and HOOVEN, F. J. Sept. 26, 1956 [Oct. 3, 1955], No. 29406/56. Class 38 (5). An ignition contact-breaker comprises a support plate 11 with lateral extensions 14, 13, 12 forming respectively, a fixed-contact carrier, a fulcrum for the movable contact arm 27, and a support for a stack comprising a terminal 20, a bowed spring 21, and an insulating strip 18 resting on the fulcrum 13 and forming a rubbing block for the cam. The spring 21 is arranged between side flanges 47 of the contact arm 27 which is formed with a depending part 42 in contact with the strip 18 at the point of engagement of the cam. The movable contact 25 is riveted to the ends of the spring 21 and arm 27. In operation, the free end of the arm 27 pivots about the fulcrum 13 due to the pressure of spring 21.
Patent GB-705115-A (GB)
Title: Improvements relating to golf bags
Inventor: PRICE EDWARD JOHN
IPC: A63B55/00
Filed: 1951-12-15
Abstract: 705,115. Golf bags. PRICE & SON (DUDLEY), Ltd., E. J. Dec. 9, 1952 [Dec. 15, 1951], No. 29416/51. Class 132(2) A golf bag a is divided into compartments c by longitudinal partitions b, each compartment being further subdivided at its mouth by cross-members d, the partitioning assembly being removable from the bag. The partitions are formed by two elements which are rectangular in crosssection and have bottom flanges f secured to a bottom plate g, the adjacent flanges f overlapping. Padding h is provided on the bottom. The top of each partition carries tubular elements b<SP>1</SP> through which and through apertures in the bag wall is threaded a securing strap j fastened at k. The cross-members d are also tubular and are traversed by a strap m fastened at n. In a modification (Fig. 4) the elements b<SP>1</SP> contain each a limb o of each two oppositely-facing U-shaped strips p which are retained in place by strips q attached to the bag wall by press-studs r. The members d are traversed similarly by U-shaped strips s retained by strips u having pressstuds v.
Patent GB-854384-A (GB)
Title: Clutch
IPC: F16D13/30
Filed: 1957-09-18
Abstract: 854,384. Clutches. JABSCO PUMP CO. Sept. ,18, 1957 [Oct. 1, 1956], No. 29433/57. Class 80 (2). In a friction clutch having conical engaging surfaces 26, 30 on driving and driven members 10, 28 respectively the actuation of the movable member 28 for both engagement and disengagement is effected through a snap-over conical spring disc 34. This disc is loosely anchored at its inner periphery in an annular groove of a collar 36 secured to the driven member 16 on which clutch member 28 is slidable. On its outer periphery the disc is engaged by an actuating cover member. 46 with an axiallyextending operating knob 48 thereon which may be rotatably mounted. The cover 46 has an annulus 50 secured thereto to form a groove for the outer periphery of the annulus and to provide a flange 60 for engaging a flange 58 on the member 28 to retract it on disengagement. Intermediate its peripheries the disc 34 engages. an annular rib 42 of the clutch member 28. When the knob 48 is pulled to the right the disc 34 is snapped over as shown to hold the clutch disengaged. On movement to the left the knob snaps the disc over centre to engage the clutch and hold it engaged under the tension thereof.
Patent GB-236103-A (GB)
Title: Improvements in vehicle brakes
IPC: F16D49/10
Filed: 1924-12-08
Abstract: 236,103. Schall, D. H. Dec. 8, 1924. Eand or coil.-One end of the brake band 6 has a straight, reduced, prolongation 17 extending beyond the brake band lining 20 and taking slidably into notches 16 in radially extending lugs 14 on the other end of the band in order to keep the ends of the band in alignment as the band is contracted or expanded. The brake is operated by a cranked lever and shaft 52, 28, 30 journaled on one end of the band and pivoted at 34 to a rod 36 located in a conical hole in a bearing member 40 fixed to the other end oi the band. The middle portion of the band is normally kept away from the drom 5 by a bracket 7 on the band having a spring member 9 bearing against a. fixed pin 8.
Patent GB-1426475-A (GB)
Title: Optical fibre switch
IPC: G02B6/35
Filed: 1973-06-21
Abstract: 1426475 Light guides PLESSEY CO Ltd 20 May 1974 [21 June 1973] 29483/73 Heading G2J An optical fibre switching device which includes first and second terminations 61, 62 of optical fibres 2 comprises over-lapping resilient reeds 41, 42, for controlling the relative physical positions of the terminations to control the passage of light therebetween. The fibres 2 may be bundles or single fibres, and in the embodiment shown part of the cladding 3 has been removed over the length L so that the exposed cores contact each other, Fig. 4b (not shown), when the switch is closed. The reeds may be flexed manually by a push button or electromagnetically and in other embodiments. Figs. 2, 3 (not shown) the fibres abut each other end-to-end at (7). The device may comprise three fibres (11, 12, 13) see Fig. 3, light being passed alternatively from (11) to (12) or (13)
Patent GB-823213-A (GB)
Title: Device for adjusting machine tool tables
IPC: B24B49/00
Filed: 1955-10-17
Abstract: 823,213. Adjusting machine tool tables. FORTUNA-WERKE SPEZIALMASCHINENFABRIK A. G. Oct. 17, 1955 [Oct. 23, 1954], No. 29526/55. Class 60. A device for adjusting machine tool tables of the type wherein an upper table is rotatable on a lower portion 4 comprises a gauge 8 and an intermediate member 6 so mounted that movement of the upper table relative to the portion 4 is registered upon the gauge through the intermediate member. The member 6 is in the form of a lever which has its fulcrum at 19, engages a pin 31 of the gauge 8 and is deflected by a feeler pin 18 operated by a pointer 2 on the upper table. The pin 18 engages the pointer 2 at a distance A from the pivotal axis of adjustment of the upper table and the displacement of the pin 31 is related to the conicity of the workpiece by the ratio AC. To enable b the dimension C to be adjusted, the gauge 8 is mounted on a member which is loaded by a spring 13 and may be slidably adjusted in a guide 10 by a cam 14 provided with an operating knob 24, an indicator 25 and a clamping knob 27. The cam bears against an abutment edge 15 of an angle piece 5 which is clamped by a screw 21 and may be adjusted with the aid of an indicator 22 to vary the distance b. Screws 3 clamp the upper table after adjustment.
Patent GB-1506959-A (GB)
Title: Lead-through assemblies
IPC: H01B17/30
Filed: 1976-07-07
Abstract: 1506959 Lead-through insulators; hermetic seals BRITISH NUCLEAR FUELS Ltd 7 July 1976 [16 July 1975] 29845/75 Headings H2C and H2E An assembly for leading a shielded electrical conductor through a vessel wall comprises an inner ceramic sleeve 10 in which a conductor 12 is located and to which the conductor is sealed, and an outer ceramic sleeve 13 carrying a ring 14 serving to engage and seal an aperture in the vessel wall, the adjacent faces of sleeves 10 and 13 being metallized and the metallization on the sleeves being connected together to form a seal and to shield electrostatically conductor 12. As shown, the metallization on the sleeves is connected together by soldered or brazed joints 15, 16 and conductor 12 is sealed to sleeve 10 by a hard soldered joint 11 at a flange carried by the conductor. The inner sleeve may be provided with an annular recess (17), Fig. 2 (not shown), to limit the capillary movement of solder or braze at the joints (15a), (16a). The metallization is applied by conventional means, for example by applying a medium containing platinum or molybdenum and heating the sleeves. It extends over the end faces of the outer sleeve 13.
Patent GB-663562-A (GB)
Title: Improvements relating to filtering devices
IPC: B01D35/02
Filed: 1948-11-17
Abstract: 663,562. Fish tanks. SPINKS, R. J. Nov. 11, 1949 [Nov. 17, 1948], No. 29899/48. Class 48 [Also in Groups I and XXVIII] A filtering device for removing sediment from an underwater surface, e.g. the bottom of an aquarium, comprises a water pipe which passes into and terminates within a perforated cylindrical filter casing containing a filter medium, and means for introducing a current of air into the pipe to induce water and sediment to flow up into the filter casing and to induce the water to flow out of the casing again via the filter medium. The casing consists of an open-ended cylinder 10, Fig. 1, having slots 16 at each end and cap members 11, 12 each having a short tubular portion 13 fitting into and spaced from the cylinder and similarly provided with slots 17. A filter medium 14, Fig. 4, such as cotton wool, is interposed between the cap members and the cylinder. A water pipe 20 passes through the lower cap member and terminates just short of the upper cap member and has secured to it an air tube 19 the lower end of which is let into an extension of the water tube having an elliptical mouth portion 22, and the upper end of which terminates above the water level. In use the device is moved about over the bottom of the aquarium and air is introduced at the top of the air tube 19 by the mouth or by a bulb attachment, so that air, water and sediment rise into the casing 10, the air escapes through a hole (not shown) in the cap 11, water escapes. through both ends, and sediment remains in the casing. Specification 644,693, [Group XXIII], is referred to.
Patent GB-1091562-A (GB)
Title: Improvements in and relating to the control of rectifiers
Inventor: CARTER RICHARD MALCOLM
IPC: H02M7/155
Filed: 1963-07-29
Abstract: 1,091,562. Pulse generators. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 26, 1964 [July 29, 1963], No. 29975/63. Heading H3T. [Also in Division H2] An oscillator for controlling thyristors, thyratrons, ignitrons or mercury-arc rectifiers is itself controlled by a waveform comprising a sawtooth wave with impulses superimposed on the peaks. In Fig. 3, a sawtooth wave is produced from an A.C. supply by R.C. circuit 6, 7 and diodes 1, 2, 3. The peak of this wave will occur around the point where the A.C. supply crosses zero, and the base of transistor 9 will then become sufficiently negative for the transistor to conduct. When this happens, a surge of current flows through diode 13 and charges capacitor 11 to the supply voltage. When the sawtooth wave returns to its initial point, transistor 9 is cut off and capacitor 11 discharges through the low resistances 10, 12, the diode 13 now being reverse biased. When the diode voltage decreases to a certain value, transistor 9 will again conduct for a short time. The impulses so produced occur slightly before the A.C. crossover point by the action of capacitor 7. The transistor 9 may be of the NPN type or can be replaced by a valve. The oscillator 17 can be a pulse-generator or a bi-stable circuit, e.g. a Schmitt trigger. The abovedescribed circuit is an auxiliary to the normal control signals applied via T4 and ensures that the oscillator will not remain in the wrong state if the control signals drift to too low a value.
Patent GB-1395799-A (GB)
Title: Surgical evacuator
IPC: A61M1/00
Filed: 1972-06-27
Abstract: 1395799 Surgical drainage apparatus F G REICK J R WILDER and F R PICUT 27 June 1972 [27 March 1972] 29975/72 Heading A5R [Also in Division F1] Surgical drainage apparatus comprises a cup formed of rigid material, such as transparent plastics, and having a side wall 11 provided with a continuous lip at its upper surface and a fixture 17 serving as the only inlet to and outlet from a sump chamber defined by the cup 11 and an elastic membrane 14 sealed to the lip of the cup, and a disc 22 secured to the membrane 14 and manually operable to effect inward stretching of the membrane to force fluid out of said chamber via said fixture, the membrane returning to an initialposition on release of the disc and thereby creating a partial vacuum for drawing fluid into the chamber via said fixture from a tube 18 connected thereto and leading to the patient. The apparatus may be attached to the patient by straps connected to a flange 13. A lever may be pivoted to flange 13 to facilitate movement of disc 22.
Patent GB-751835-A (GB)
Title: Improvements in or relating to frequency demodulators
IPC: H03D3/08
Filed: 1954-10-18
Abstract: 751,835. Frequency demodulation. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 18, 1954 [Oct. 21, 1953], No. 29999/54. Class 40(5). In a circuit comprising an amplitude limiter coupled to a frequency discriminator consisting of two rectifiers 6, 7 fed with two voltages S in antiphase over tuned circuit 5 coupled through capacitor 16 to resistor 15 in the I.F. amplifier circuit, and also fed over transformer winding 9 with an oscillation P from tuned circuit 4 relatively phase displaced, it is arranged that the amplitude modulations of the oscillations fed over circuit 15, 5 and circuit 4, 9 have opposite polarities and such magnitudesthat the amplitude of the output of the discriminator is constant independent of the frequency (Fig. 1). The required condition is p/s-P<SP>3</SP>/S<SP>3</SP>, where s is the decrease in the value of S corresponding to the increase p of P. A second embodiment uses a limiter of the known R.C. type and inductive coupling be. tween circuits 4 and 5 is again avoided, the circuit 5 being fed through a small capacitor from a resistor between the rectifier and R.C. circuit of the limiter (Fig. 3, not shown). A third embodiment employs a grid current rectifier as a limiter (Fig. 5, not shown). In Fig. 4, a further embodiment has oscillations applied in antiphase to rectifiers 6<SP>1</SP>, 71 from tuned circuit 22, and further oscillations of opposite amplitude modulation polarity and consisting of signals from tuned circuit 24 and those developed across resistor 26 in the I.F. amplifier circuit fed also to the rectifiers to produce the required output amplitude insensitive to frequency variations.
Patent GB-1480661-A (GB)
Title: Process for reducing the titanium and aluminium content of aqueous waste liquid
IPC: C02F1/52
Filed: 1975-07-17
Abstract: 1480661 Reducing Ti and Al in aqueous waste HOECHST AG 17 July 1975 [17 July 1974] 30018/75 Heading C1C A process for reducing the Ti and Al content of aqueous waste liquid comprises establishing a pH of 4À5 to 9 and separating the resulting Ti and Al-containing deposit. A flocculating agent may be incorporated with the waste liquid to assist formation of the said deposit; a suitable agent is one based on polyacrylamide. The method is suitable for waste liquid obtained from the polymerization of olefins by, e.g., a Ziegler process.
Patent GB-475927-A (GB)
Title: Improvements in or relating to stationery feed mechanisms for typewriters and like machines
IPC: B41J11/27
Filed: 1936-03-26
Abstract: 475,927. Typewriters ; addressing- machines. SMITH & SON, Ltd., W. H. (Standard Register Co.) March 26, 1936, No. 30155/37. Divided out of 475,866. Drawings to Specification. [Classes 100 (ii) and 100 (iv)] In a feed-roller or platen-roller for use in typewriting, addressing and like machines, a pin-unit for engaging perforations in stationery is mounted on a number of parallel rods which are supported at both ends independently of the pin-unit, the arrangement enabling the pinunit to be adjusted slidably in accordance with the width of the stationery or the position of the perforations therein. The description in the Specification is substantially identical with part of Specification 475,866, but the claims are different. Specifications 372,980, 408,125 ; and 409,162, [Group XV], also are referred to.
Patent GB-1509967-A (GB)
Title: Crosslinked polyamidoamine condensation products for papermaking
IPC: D21H21/10
Filed: 1975-07-18
Abstract: Nitrogen-containing crosslinked condensation products are prepared by reacting polyamidoamines, which optionally contain up to 8 grafted on ethyleneimine units per basic nitrogen group in the polyamidoamine and are obtainable by condensing dicarboxylic acids having 4 to 10 carbon atoms with polyalkylene polyamines, with a crosslinking agent which has been reacted by reaction of the terminal OH groups of polyalkylene oxides with at least equivalent amounts of epichlorohydrin, at from 20 to 100 DEG C. The reaction is carried out until high-molecular-weight resins which are only just water-soluble are formed. From 0.3 to 2 parts by weight of the crosslinking agent are employed per part by weight of a polyamidoamine. Resins are obtained which have a viscosity of greater than 300 mPa in 20% strength aqueous solution at a temperature of 20 DEG C. The crosslinked, nitrogen-containing condensation products are used as auxiliaries in the production of papers of all types. They are employed in an amount of from about 0.01 to about 0.3% by weight, based on the weight of the cellulose fibres, in the fibre pulp. The condensation products are suitable as dewatering, flocculation or retention agents.
Patent GB-193116-A (GB)
Title: Improvements in water cooling towers
IPC: F28F25/08
Filed: 1921-11-12
Abstract: 193,116. Edwards, A. W. R. Nov. 12, 1921. Cooling-towers.-A series of horizontally disposed bars or laths d is arranged below and at right angles to the usual secondary distributing gutters a at the top of the tower, the laths being set at an inclination or provided with inclined surfaces so that the liquid is spread thereby in thin streams over the gridwork e below. The gutters may have perforations f in their sides, or be fitted with discharge pipes k at the base, to deliver the water in jets. The bars may be of rectangular or triangular section.
Patent GB-160225-A (GB)
Title: Improvements in or relating to the manufacture of plastic masses
IPC: C08K5/00
Filed: 1919-12-03
Abstract: In the manufacture of plastic celluloid-like masses having a basis of cellulose acetate, the latter with or without other usual or suitable ingredients, is mixed with a suitable high boiling-point solvent or plastifier and with a volatile liquid or diluent having no solvent action on the acetate and in quantity sufficient to inhibit the gelatinizing-action of the plastifier and to allow the mass to be kneaded without difficulty and in such a manner as easily to distribute the plastifier homogeneously throughout the mass; after kneading or incorporation, the volatile diluent is evaporated or expelled, when the plastifier proceeds to act on the acetate and eventually to give the desired celluloid-like mass, which may be worked up to celluloid &c. or may be diluted to give solutions of any desired fluidity. Suitable plastifiers are the alkylated sulphonamides referred to in Specifications 132,283, 133,353, and 154,334; and the most suitable volatile diluents are ethyl or methyl alcohol, or mixtures thereof; but if the presence of moisture is to be avoided, then benzene or other volatile liquid free from water may be employed, in which case the acetate is before use also preferably freed from all moisture.
Patent GB-172291-A (GB)
Title: Telephone receiver
IPC: H04R13/02
Filed: 1921-11-12
Abstract: 172,291. Western Electric Co., Ltd., (Assignees of Bungerz, K.). Dec. 2, 1920, [Convention date]. Electromagnets for telephone receivers comprise a coil surrounding a core and surrounded by a cylindrical shell. both core and shell being split longitu. dinally and provided with flanges adapted to be joined together, preferably by welding, The core may be of silicon steel and the shell of soft iron. Fig. 1 shows the receiver in section, and Fig. 3 the core and shell. The core 10 is formed of two half tubes divided by a gap and each integral with a semi-circular flange, 13, 14. The shell 11, is cylindrical with a flanged end 12 and is split longitudinally. The core and shell are secured together by welding the flanges or by screws, and the coil 9, Fig. 1, is held in position in the annular chamber by shellac, and a rubber plug 16 is forced into the core 10 and also held by shellac. The magnetic unit is attached by screws to the inside of a brass cup 4, provided with a seating for the diaphragm which is held in place by a perforated screwed cap.