baber/WOPTO huggingface dataset:
Patent GB-520976-A (GB)
Title: Improvements in or relating to thermo-converters for measuring high frequency electric currents
IPC: G01R21/00
Filed: 1938-11-05
Abstract: 520,976. Current measurements. FIDES GES. FUR DIE VERWALTUNG UND VERWERTUNG VON GEWERBLICHEN SCHUTZRECHTEN. Nov. 5, 1938, No. 32139. Convention date, Nov. 5, 1937. [Class 37] A thermo-converter for measuring highfrequency currents has a compensating resistance connected in parallel with the heating resistance and so dimensioned that the power converted into heat in the heating resistance is independent of frequency, thereby compensating for errors due to skin effect. Two terminal blocks 4, 5 of copper mounted on an insulating base 3 are provided with central terminals 6, 7 for the high-frequency current to be measured. Stretched between the blocks 4, 5 is a heating resistance 1 having connected to its centre a thermo-element 8 to which a D.C. instrument 9 is connected. A compensating resistance 2, of the same material as the heating resistance 1 but of shorter length, is connected between the blocks 4, 5 by means of extension copper conductors 10, 11. In an example, the heating-resistance 1 is of constantan wire 2 cm. long and 0.1mm. diameter and the compensating resistance 2 is a constantan wire 1 cm. long and 0.045 mm. diameter. Alternatively, the resistances 1, 2 may be of the same length but different materials, the extension conductors 10, 11 then being omitted.
Patent GB-749250-A (GB)
Title: An improved optical method of detecting change of orientation and means for providing a signal to indicate such change
Inventor: ORCHARD GORDON ARTHUR JOHN
IPC: D06H3/12
Filed: 1952-12-18
Abstract: 749,250. Automatic control systems. BRITISH RAYON RESEARCH ASSOCIATION. March 10, 1954 (Dec. 18, 1952], No. 32166/52. Class 38 (4). [Also in Group XL (b)] In a method of detecting change of orientation of an object which has a directional reflective characteristic and, if desired, straightening it, two beams of light are directed on to the same area or identical areas of the object so that the intensity of light reflected in a given direction is constant when the object has a datum orientation but fluctuates when the object rotates. The invention is described with reference to straightening the weft of a fabric surface W. As shown, light from a source 5 is split into two beams by an adjustable strip B movable by a screw 17 to adjust the relative quantities of light in the two beams. The beams are then focused by planar-convex lenses L1 which are capable of axial adjustment, to diaphragm D1 also in the focal planes of lenses L2, L3, each of which has attached to it one of polarizing discs Z2, Z3, the polarizing planes of which are at right angles. Between diaphragm D1 and polarizing discs Z2, Z3 is a rotating polarizing disc Z1 driven through gearing by a synchronous motor 23. A prism P directs the two beams of light leaving lenses L2, L3 on to the same area of the web. Light reflected by the web is focused by a lens L4 on to an aperture in a diaphragm D2 and thence on to a photomultiplier tube E. A ground glass screen G may be pivoted into position above the web for adjustment purposes. With this screen in position the shutter B is adjusted until the beams emerging from the prism are of opposite phase and of equal intensity. The ground glass screen is replaced by the weft and the photo multiplier output will vary in phase and of equal intensity. The ground glass screen is replaced by the weft and the photo multiplier output will vary in phase sense according as the weft is rotated to one side or the other of the correct orientation. Circuit.-The multiplier output is amplified in a conventional amplifier tuned to twice the fre. quency of the rotary disc of polarizing material. The amplified output is then applied simultaneously to the grids of a pair of thyratrons the anodes of which are supplied in anti-phase from the same A.C. supply as operates the synchronous motnr. Each thyratron includes an anode relay. Thus one relay or the other is operated depending on the direction of twist of the web and may operate the motor of a known electro-mechanical weft straightening device.
Patent GB-1274239-A (GB)
Title: Tandem master cylinder
Inventor: NAKASHIMA KATSUSHI
IPC: B60T11/20
Filed: 1969-06-25
Abstract: 1,274,239. Master cylinders. AISIN SEIKI CO. Ltd. 25 June, 1969 [25 June, 1968], No. 32200/69. Heading F2F. A tandem hydraulic master cylinder has a stepped piston 14 actuated by a rod 64 and is slidable in bores 16, 17 defining hydraulic chambers 18, 19 communicating with reservoirs 11, 12, ports 20, 21 being provided communicating respectively via pipelines 54, 59 and a common pressure balance cylinder "A" with two independent wheel cylinder arrangements 55- 58 and 70-73, Fig. 4 (not shown), whereupon leakage of hydraulic fluid in either pipeline the brake pedal travel is not effectively increased by virtue of the provision of valves which close passages 32, 22 connecting chambers 18, 19 with reservoirs 11, 12. As shown in Fig. 1, on its forward stroke against the action of springs 25, 34 the piston moves to the right and the enlarged end 30 of a valve rod 29 which slides in a bore 31 disengages from a retainer ring 23. The valve is then moved to the right under the influence of spring 27 and valve member 26 closes passage 22. Communication between reservoir 12 and chamber 19 is terminated by seal 36 closing port 32. In a further embodiment, Fig. 6, a secondary piston 106 is provided having forked sections 106a on either side of a fixed pin 104 contacting a valve actuating rod 101 freely movable in a bore 102 of a plug 103, which bore connects chamber 19<SP>1</SP> with chamber 105<SP>1</SP> and also reservoir 12<SP>1</SP> through bore 33<SP>1</SP>. On rightward movement of the piston 106 together with plug 103, pin 104 and rod 101 disengage and valve 26 closes bore 102. A further modification has a spring-loaded tilting valve 110, Fig. 7 (not shown) in the passage joining chamber (105<SP>11</SP>) and reservoir (1211) held in its open position by a piston shoulder 14<SP>11</SP>.
Patent GB-409786-A (GB)
Title: Means for compressing and inserting piston rings into cylinders
IPC: B25B27/12
Filed: 1932-11-15
Abstract: 409,786. Inserting pistons into cylinders. DILLON, S. W., and COLE, G. L., 8A, Hesper Mews, Bramham Gardens, Earl's Court, London. Nov. 15, 1932, No. 32302. [Class 122 (i).] In a device for inserting piston rings into cylinders of the kind comprising a strip of metal which may be folded to encircle a piston and its rings with means for drawing together the ends of the strip, the ends of the strip are retroverted to form hooks or sockets which are engaged by the ends of a bifurcated arm, a looped member slidable around the arm serving to draw together the ends of the strip. The flexible strip a has projections f and looped ends b, c into which the bent-up ends of a U-shaped arm h are inserted, thus enabling the strip to be drawn tightly around the rings and piston by moving the slider j. The projections f may be confined to the edge of the strip and a modified arm is described for inserting pistons at the top of the cylinder.
Patent GB-829018-A (GB)
Title: Improvements in scraper blades for use in heat exchangers
Inventor: CLARK FRANK JOSEPH
IPC: B08B9/045
Filed: 1956-10-23
Abstract: 829,018. Tube scrapers. CLARKE-BUILT Ltd. Sept. 27, 1957 [Oct. 23, 1956,] No. 32321/56. Class 99(2). A scraper blade for heat exchangers, of the type dealing with high viscosity liquids and having shafts 6 carrying scraper blades rotating inside the heat exchange tubes, comprises a flexible member 3 supported above a flat surface 7 on the shaft and provided with a row of holes 4 near the scraping edge. The blade has keyhole slots 9 co-operating with studs 11 on the shaft and holes 13 at each end of the blade snap over studs 12 when the blade is in position to prevent endwise displacement of the blade.
Patent GB-891252-A (GB)
Title: Improvements in and relating to ball joints
IPC: F16C11/06
Filed: 1958-10-09
Abstract: 891,252. Windscreen wiper mechanisms. BOSCH G.m.b.H., ROBERT. Oct. 9, 1959 [Oct. 9, 1958], No. 32331/58. Class 138(1). [Also in Group XXV] The power transmitting linkage of a windscreen wiper mechanism comprises a ball joint the socket 4 of which is constituted by a single piece of elastic synthetic plastic material secured in an aperture 3 in a connecting rod 1, one end of the socket being of reduced cross-section (e.g. hemispherical, as shown, or conical) so that the socket can be inserted into the aperture by applying pressure thereto. The ball 6a is then snapped into the socket in a similar manner. The aperture 3 may be non-circular to prevent the socket from rotating relative to the rod. The plastic material may be polyurethane or polytetrafluoroethylene. The Provisional Specification also describes an alternative joint comprising a cylindrical bush made of plastic material and having its opposite ends of reduced diameter for insertion, by axial compression of the bush, in aligned apertures in the U-shaped end of a connecting rod.
Patent GB-335091-A (GB)
Title: Improvements in rotary pumps for artificial silk spinning processes
IPC: F04C15/00
Filed: 1929-10-26
Abstract: 335,091. Kimmig, W., and H÷lken Ges., M. Oct. 26, 1929. Drawings to Specification. Movable-abutment type; discharge and suction pipes and passages for pumps.-In a gear-wheel pump used for feeding spinning solutions such as viscose in the manufacture of artificial filaments the shaft bearings are lubricated by circulating all the fluid being pumped, through grooves around them. The grooves may be formed as helices of a sleeve bearing.
Patent GB-639686-A (GB)
Title: Improvements relating to tuning means for mixed radio receivers adapted for amplitude modulation or frequency modulation
IPC: H03D5/00
Filed: 1947-12-11
Abstract: 639,686. Frequency and amplitude modulation receivers. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 11, 1947, No. 32692. Convention date, Aug. 30, 1945. [Class 40 (v)] In radio receivers adapted for reception of either frequency-modulated or amplitude-modulated waves, a tuning indicator, fed from the I.F. stages through a narrow pass-band filter and rectifier, is available for precision tuning whether F.M. or A.M. signals are being received. As shown, the I.F. stage 5 feeds F.M. waves to a limiter 6, discriminator-detector 7 and audio amplifier 8. The I.F. wave is also fed to a pentode amplifier 17 which has its anode tapped on the primary coil 28 of a narrow pass-band filter constituted by coupled circuits 27, 28; 29, 30. The secondary coil 29 is tapped to a diode detector 31 with its cathode connected through a smoothing circuit 34, 35 to a tuning indicator 13 which may be of the magic eye type, and indicates accuracy of tuning whether the received waves are of the F.M. or A.M. type. When the received waves are of the latter type, the modulation signal is developed across the diode resistor 32 and is fed through the switch S to the input of the audio amplifier 8.
Patent GB-718933-A (GB)
Title: An improved construction of reciprocating pump
IPC: F01L25/06
Filed: 1952-12-24
Abstract: 718,933. Reciprocating pumps. WILLIAMS, R. W. Dec. 24, 1952, No. 32772/52. Class 102 (1). 102 (1). A double-acting reciprocating pump for use in dispensing petrol &c., comprises a casing 20 secured between closed ended cylinders 25, Fig. 2, and slidably and sealingly mount a hollow plunger 27 dividing the assembly into a pair of pumping chambers 25A, 25B having inlet and outlet valves 24A, 24B, respectively. The plunger 27 is also slidably mounted on a cylindrical block 29 secured midway in the cylinder by air supply and exhaust pipes A, B which pass sealingly through the cylinder ends. The block 29 slidably mounts a piston valve 37 controlling the supply and exhaust of compressed air alternately to and from the opposite ends of the plunger and an auxiliary valve 38a, Fig. 4, having end tappets 38b mounting spring-loaded valves 40. The valves 40 control the flow of air from the charged end of the plunger 27 to the adjacent end of the piston valve 37 to move this valve to the opposite end of its bore on the engagement of the tappet in the exhausted chamber with the associated end of the plunger. The connections of the valve 37 are then reversed and hence also the direction of motion of the plunger 27. The pump is fitted with a cut-off valve 45, Fig. 12, to automatically cutoff the supply of operating air thereto when the pressure of the pumped liquid reaches a predetermined valve. The valve 45 comprises a differential thrust head 47 housed in a chamber 43 open to the atmosphere and operable by diaphragms 48, 49 subjected to air supply pressure respectively. Normally the higher air pressure acting on the diaphragm 48 overcomes the lower liquid pressure acting on the diaphragm 49 to open an adjustable spring-loaded valve 50 to connect a source of compressed air supply to the pipe A. On the pump discharge pressure overcoming the air supply pressure the diaphragm and thrust head are moved to the right, the annular cavity 45b immediately increasing the effective area of the diaphragm 49 to snap the valve 50 closed and hold it closed until the pump pressure decreases sufficiently for the air supply pressure to again overcome the pump pressure and re-open the valve 50.
Patent GB-604810-A (GB)
Title: Improvements in or relating to garden ground frames
IPC: A01G9/24
Filed: 1945-12-04
Abstract: 604,810. Washing and watering plants. OAKES, A. H. Dec. 4, 1945, No. 32812. [Class 6(ii)] [Also in Group X] Relates to garden ground frames,. especially for use in market gardens where long frames are required, and consists of a frame constructed of horizontal tubular units A, joined in series and connected to a source of water under pressure, provided on their undersides with spraying nozzles B and supported at their junctions by vertical tubes or stanchions C, the lower ends of which are pointed to facilitate their being driven into the ground. Longitudinal plates G, comprising a central rib H against which glass frames (not shown) abut are fastened to platforms E at the tops of the vertical supports, the platforms being welded to sleeves D into which the tubes A enter at their joints. Instead of a cylindrical sleeve D and a plate E a U-shaped channel may be provided for receiving the tubes, and the plate G may be fastened to flanges on the channel.
Patent GB-967122-A (GB)
Title: Booklet for coincidental display or different colours
IPC: G09F5/04
Filed: 1962-08-27
Abstract: 967,122. Pattern books. X. AUOR. Aug. 27, 1962 [Aug. 25, 1961; Aug. 1, 1962], No. 32859/62. Heading A4T. A show card pack for the simultaneous viewing of a plurality of colour tones, e.g. for appreciating a colour scheme of a room, comprises coloured cards A6, A7, Fig. 16 having polygonal openings e.g. N, K, whereby re-entrant parts of the openings f, 1w, may be viewed at the same time through the openings when the cards lie one above the other over the base card A2, Fig. 16 or A, Fig. 1, the sides of the openings being cut in accordance with a system of lines common to all the cards of the pack. The common system of lines may comprise a small rectangle within a large rectangle with diagonal lines joining the corners, or two horizontal lines parallel with two sides of a rectangle and having at least one vertical line extending between the horizontal lines. Each card may have a lower opening G and two side slits D whereby a colour tone card may be inserted in the slots for viewing through the opening.
Patent GB-477229-A (GB)
Title: Improvements relating to regulating arrangements for internal combustion engines, particularly for aircraft engines
IPC: F02D9/00
Filed: 1936-12-01
Abstract: 477,229. Spray carburetters. SOC. ANON. SOLEX. Dec. 1, 1936, No. 32899. Convention date, Oct. 17. Addition to 462,429. [Classes 7 (iii) and 7 (vi)] [Also in Group XXVI] A supercharging compressor 28 is fitted between the carburetter and the engine and an unbalanced throttle valve 4 is fitted in the induction pipe and is arranged to close as the flow of mixture increases. The valve 4 is connected to a spring 6 the abutment 8 of which is connected by levers to a hand control lever 25 and a diaphragm 14 which is pressed against a stop 20 by a spring 17. ,Both sides 15, 16 of the diaphragm are connected by pipe 18 to the inlet 29 of the supercharger and the chamber 16 is connected to the outlet 27 of the supercharger. When the pressure in the outlet 27 rises above a predetermined value it compresses a bellows exposed to atmospheric pressure and opens a valve 24 whereby the diaphragm 14 moves to decrease the loading of the spring 6. The constant level fuel chamber 40 is connected by pipe 44 to the air inlet and a valve 42 is carried by a bellows 41 exposed to atmospheric pressure. For maximum power the lever 25 is proved so that the valve 31 is opened and the supercharger delivery pressure is allowed to act on the fuel in the chamber 40, and the valve 42 is raised thus increasing the mixture strength. Abutments 47, 48 are connected to the lever 25 and engage the lever 46 connected to the valve 4 in the extreme positions of the lever 25. In a modification, the supercharging compressor 28 supplies several carburetters and the valve 4 is mounted in the inlet of the compressor. The lever 25 is additionally connected to valves in each carburetter.
Patent GB-970610-A (GB)
Title: Process control by surface tension measurement
IPC: B01J19/00
Filed: 1962-08-28
Abstract: Polymer latices are formed by conducting an emulsion polymerization reaction of the monomer, wherein a sample of reaction mixture is continuously withdrawn, changes in its surface tension are sensed by measuring the maximum pressure required to blow disciete bubbles in the sample and surface-active agent is added to the reaction mixture to maintain its surface tension at a predetermined value.  Specified monomers are styrene, alpha-methyl styrene, divinyl benzene, acrylonitrile, butadiene, isoprene, vinyl chloride, vinylidene chloride, vinyl acetate. acrylic and methacrylic acids, ethyl acrylate and methyl methacrylate.  In examples, (1) styrene was polymerized in presence of a tertiary mercaptan potassium persulphate and potassium oleate; (2) styrene/butadiene were copolymerized in presence of the ingredients of example (1) and additionally potassium hydroxide and sodium bisulphite; (3) butadiene was polymerized in presence of the ingredients of example (2); (4) methacrylic acid/styrene/butadiene were copolymerized in presence of a tertiary mercaptan, potassium persulphate, sodium bisulphite, ethylenediaminetetraacetic acid and an alkylbenzene sodium sulphonate; these reactions were initiated in absence of surface-active agent, which was added in accordance with the invention. In general, the surface-active agent may be an aqueous, alcoholic or other solution of a soap such as an alkali or alkali metal salt of e.g. lauric, palmitic, stearic, oleic or a rosin acid, or a solution of synthetic detergent such as sodium dodecyl benzene sulphonate or sodium lauryl sulphate, or a non-ionic surfactant. U.S.A. Specification 2,579,908 is referred to.ALSO:A method of controlling the surface tension of a liquid reaction mass whose surface tension tends to increase during reaction, comprises continuously withdrawing a sample of liquid, sensing changes in the surface tension of the sample by measuring the maximum pressure required to blow discrete bubbles therein and adding a surface-active agent to the reaction mass so as to maintain its surface tension at a predetermined value.  The method is especially applicable to the polymerization of an aqueous emulsion of a monomer to form a polymer latex (see Division C3). An automatic apparatus is described.  U.S.A. Specification 2,579,908 is referred to.
Patent GB-261565-A (GB)
Title: Improvements in pressing machines
IPC: D06F71/04
Filed: 1925-12-31
Abstract: 261,565. British-American Laundry Machinery Co., Ltd., (American Laundry Machinery Co.). Dec. 31, 1925. Reversing machinery by movement of guards. -In a garment-press having an electric motor rotatable in opposite directions for closing and opening the press, emergency means are provided which, when operated during the closing move. ment, interrupt such movement and restore the press to full open position. The press is operated by toggle links 7, 9 made and broken by a link 29 driven from a reversible electric motor 22 through epicyclic reducing gear, not shown. A guard 77 surrounding the head 2 is carried at each end by a frame 76 suspended from a lever arm 73 by a link 74. If the guard is displaced during the closing movement of the press the arm 73 rotates a shaft 71 which draws forward a rod 69. This movement withdraws a detent 66 from a notch 64 in a rod 58, which is then actuated by a spring 61 to rock a lever 51 raising the rod 40 to open the press-closing circuit and to close the circuit for operating the motor in the reverse direction for opening the press. Specifications 250,449, [Class 138 (ii), Washing, mangling, &c.], 261,566, 261,682, and 261,683 are referred to.
Patent GB-263868-A (GB)
Title: Process to produce diffuse light
IPC: F21V5/00
Filed: 1926-12-31
Abstract: 263,868. Ph÷nix Maschinenfabrik Ges., (Assignees of Schirmacher, A.). Dec. 31. 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Bulbs.-In order to diffuse the light passing through them bulbs are covered with manycornered particles of clear or coloured transparent glass. The glass particles may have a higher melting point than the bulbs, and they may be fixed in position by partially melting the bulb, or during the manufacture of the bulb, after it has been given the required sbape and before it loses its softness.
Patent GB-1467099-A (GB)
Title: Controlled pressure surgical dressing
IPC: A61F13/00
Filed: 1975-08-07
Abstract: 1467099 Surgical dressings KENDALL CO 7 Aug 1975 [8 Aug 1974] 33070/75 Heading A5R A surgical dressing comprises a piece of multi-layered washed gauze 11 arid a batt 12 of deregistered permanently crimped acetate tow positioned centrally on the gauze, the gauze being folded first along a a' and b b' and then along c c' and d d' to cover the batt, the dressing being unfoldable along c c' and d d' to provide two positioning tabs (21), Fig. 2 (not shown). The deregistered permanently crimped tow is produced by blowing the fibres of permanently crimped tow out of registration. One or more layers of absorbent crepe cellulose wadding may optionally be wrapped around the batt, Fig. 4 (not shown).
Patent GB-1391306-A (GB)
Title: Rotary fluid-flow meters
IPC: G01F1/06
Filed: 1972-07-14
Abstract: 1391306 Rotary fluid-flow meters TRAFFIC & SAFETY CONTROL SYSTEMS Inc 14 July 1972 [16 July 1971 4 Feb 1972] 33105/72 Heading F1F A rotary fluid-flow meter comprises a bladed rotor 56 mounted in a cylindrical chamber 16 into which the fluid is injected tangentially via a passage 18, the outlet 20 leading axially from a reduced diameter portion 42 of the chamber 16 so that a helical flow pattern is established. Prism-shaped baffles 17a ..... 17f are located on the wall of chamber 16 which provide a non-linear turbulence which counteracts the inherent non-linearity of such a flow pattern to produce a substantially linear characteristic. Means for detecting the rotational speed of rotor 56 comprise a bulb 86 and photo-sensitive detector 90 located respectively in widened portions of aligned bores 82, 84. The ends of blades 58 intermittently interrupt the light beam from bulb 86, and the detector can thus measure the rotor speed.