baber/WOPTO huggingface dataset:
Patent GB-815375-A (GB)
Title: Improvements in braking apparatus for use in colliery and like winding equipment
IPC: B66D5/26
Filed: 1956-01-17
Abstract: 815,375. Winding machinery brakes. BLACK, G. A. Jan. 17, 1957 [Jan. 17, 1956], No. 1543/56. Class 103 (1). Braking apparatus for use in colliery and like winding equipment includes a hydraulic intensifier unit E, which produces a high fluid pressure operation in the cylinder C against the ram B, which acts against springs SN to govern the application of brake shoes or the like, not shown, the piston L of the intensifier unit being acted upon by fluid at a relatively low pressure generated by pump G and controlled by valve D. In operation, pressure fluid from the pump G first raises the piston L of the unit E to its full extent and then becomes operative in the space between the two ends of the " dumb-bell " piston valve in the control valve D. If the hand lever HL is so moved as to cause the rod J to move downwardly, through the central passageway in the piston valve F, FA, the return flow of fluid to the drain tanks TR is blocked off at passage P and a pressure is communicated from port b to the top of the intensifier unit E, so as to produce a high pressure in cylinder HE for operating the brake. This form of operation enables the advantages of high-pressure operation as outlined in Specification 702,260 to be obtained in the case of small winders, when the cost of high-pressure pumps would be prohibitive.
Patent GB-689841-A (GB)
Title: Coated articles comprising synthetic linear polyesters
Inventor: BUIST JACK MITCHELL
IPC: C08J7/04
Filed: 1950-01-20
Abstract: 689,841. Coated fabrics &c. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Jan. 19, 1951. [Jan. 20, 1950] No. 1555/50. Class 140. [Also in Group IX] Articles comprising a synthetic linear polyester obtainable from a glycol of the formula HO(CH 2 )x OH, wherein x=2 - 10, and terephthalic acid in admixture with one or more different dicarboxylic acids or not, have a continuous adherent coating of polyvinyl chloride together with a softening or plasticizing agent. The articles may be threads, yarns, cords, ribbons, textile fabrics, monofils and films. Coating may be effected by extrusion at say 160‹ or 170‹C. Tricresyl phosphate and polyprolylene adipate are specified as plasticizers for the polyvinyl chloride. Specification 599,097, [Group IX], is referred to.
Patent GB-141810-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B75/18
Filed: 1919-01-21
Abstract: 141,810. Hall, W., and Wellesley, R. Jan. 21, 1919. No Patent granted (Sealing fee not paid). Four-stroke-cycle engines; cylinders, pipes for. -Four radial cylinders are disposed in each of a number of parallel planes, each of the cylinders in a plane being inclined at different angles to the two cylinders on either side of it and in the same plane. Fig. 1 illustrates an engine having sixteen cylinders, the angles between the cylinders 1, 2 being 45 degrees, and that between the cylinders 1, 14 135 degrees. The cranks of the two end planes of cylinders make with one another 180 degrees, these cranks being displaced by 90 degrees from the cranks of the other two planes. The order of firing is indicated in Fig. 1 by the numerals 1 to 16. A separate carburettor is provided for each side of the engine, the supply pipes c leading from the carburettor outlet d being arranged as shown in Fig. 1.
Patent GB-446031-A (GB)
Title: Apparatus for measuring the frequency of impulses
IPC: A61B5/024
Filed: 1935-01-17
Abstract: 446,031. Electric signalling systems. STRAUSS, S., 5, Pointengasse, and WEISGLASS, L., 56, Promenadenweg, both in Vienna. Jan. 17, 1935, Nos. 1643 and 1644. Convention dates, Jan. 18, 1934 and June 30, 1934. [Class 40 (i)] [See also Group XIX] Apparatus for measuring the fre quency of im. pulses such as pulse beats comprises a relay R which at each im. pulse connects a condenser C2 across a condenser C1, the condenser C2 being shortcircuited after each impulse. Condenser C1 is connected to a source V7 of constant potential and thus attains an equilibrium potential dependent upon the frequency of the impulses, this potential being measured by an electrostatic or thermionic valve voltmeter which is calibrated to indicate the frequency. The pulse beats are caused to act on a piezoelectric crystal K shunted by a resistance W and connected through an amplifier to the relay R, the armature of which is thus attracted at each pulse beat. The needle of an instrument J1 also oscillates at each beat. The condenser C1 is charged from the source V7 of constant potential through a resistance W10. At each beat, the relay R closes contacts 1, 2 to connect C1 across the smaller condenser C2. The contacts 1, 2 then open and contacts 2, 3 close to discharge thecondenser C2. The potential maintained on C1 is thus a measure of the frequency of the pulse beats. Contacts 4, 5 are closed by the relay R to connect a third condenser C3 in parallel with the condenser C1. The potential of C3, and thus of C1, is indicated by an ammeter J 3 in the plate circuit of a valve V3. This ammeter therefore gives a direct reading of the pulse frequency. The Specification as open to inspection under Sect. 91 describes also a glow tube which lights at each impulse and an ammeter arranged to indicate the amplitude of the impulses. This subject-matter does not appear in the Specification as accepted.
Patent GB-509159-A (GB)
Title: Improvements in pipe joints
IPC: F16L21/06
Filed: 1938-01-18
Abstract: 509,159. Pipe joints. SUT. TON, A. W. Jan. 18, 1938 No. 1645. [Class 99 (i)] ‹ A divided sleeve B is bolted on to abutting pipes A and compresses rubber rings E contained in internal groove, on to the pipe ends. Rubber blocks or strips D engage recesses in the longitudinal joints of the sleeve. The rings pass through holes or notches in the blocks.
Patent GB-767638-A (GB)
Title: Insecticides
Filed: 1955-01-19
Abstract: The invention comprises fluoroethyl esters of aliphatic acids of 12-18 C atoms, and insecticidal compositions containing such esters of aliphatic acids in general.  The esters may be prepared by esterification by standard methods of 2-fluoroethyl alcohol. In examples, the preparation by a customary method of 2-fluoroethyl laurate, is described; tests on infected plants of fluoroethyl tridecanoate, myristate, and oleate, are referred to. Compositions for aerosols and dusts are also referred to.  Other esters mentioned include the valerate, caproate, palmitate, and stearate.ALSO:The invention comprises insecticidal compositions of fluoroethyl esters of aliphatic acids (see Group IV(b)).  In examples the ester may be dissolved in isopropyl or t-butyl alcohol with a triethanolamine fatty acid salt as emulsifier diluted to an emulsion with or without wetting agents and applied as an aerosol; and mixed with a filler such as diatomaceous earth, and a powdered solid carrier as mica, talc, pyrophyllitiec clays or grouid gypsums, for use as a dust.
Patent GB-1128002-A (GB)
Title: Pattern formation process for producing printed circuits
IPC: H05K3/14
Filed: 1966-01-13
Abstract: 1,128,002. Printed circuits. SPERRY RAND CORP. 13 Jan., 1966 [14 Jan., 1965; 1 Dec., 1965], No. 1690/66. Heading H1R. [Also in Division C7] A printed circuit is formed on a substrate of e.g. glass, quartz or alumina, by applying a nucleating material to the substrate, acribing a pattern on the material, and then depositing a coating which adheres to the pattern of nucleating material. The nucleating material may be Al, Sb, As, Be, Bi, Cd, Cs, Co, Cr, Au, Cu, Fe, Pb, Hg, Ni, Pd, Re, Rb, Se, Te, Tl, Sn, Ti, Zn, Zr, their oxides and their halides. The coating may be formed by vapour or electroless deposition and may be Zn, Cd, Sb, Cu, Au, A1, Ag, Pb, Sn, Bi, In, Mg or Ni.
Patent GB-668822-A (GB)
Title: Improvements in or relating to stock supply means for a fourdrinier paper machine
IPC: D21F1/02
Filed: 1948-01-20
Abstract: 668,822. Fourdrinier paper-making machines. BLACK-CLAWSON CO. Jan. 20, 1948 [Oct. 17, 1947], No. 1709/48. Class 96. In a Fourdrinier paper-making machine, pulp is fed uniformly at relatively high velocity through an orifice 30 into a passage 45 whose walls 43 and 44 diverge at an angle not greater than 10 degrees and thence is passed, with reduced velocity, through a slot 40 into a flow box 10, from which, the pulp is fed to the wire 11 at wire speed. The slot may pierce one wall of the flow box, e.g. its bottom 41, and may be adjacent an edge of a second wall thereof, e.g. wall 42. One wall of the passage, e.g. wall 43, may be parallel to the said second wall of the flow box. A baffle 55 with slots 56 may be placed across the flow box and the total area of these slots may equal the area of the slot 40. The orifice 30 may be smaller in area than the slot 40 but may extend as far laterally as does the latter, e.g. over the entire width of the machine. Before reaching the orifice 30 the pulp may be passed through a flow-evener comprising a pair of counterflow tapered conduits 24 and 25.
Patent GB-1284993-A (GB)
Title: Receptacle for retractable mounting and assembly incorporating the same
Inventor: SEAGER SIDNEY CHARLES DOUGLAS
IPC: A47L15/50
Filed: 1970-01-13
Abstract: 1284993 Dishwashing machines; sliding drawers KENWOOD MFG (WOKING) Ltd 23 Dec 1970 [13 Jan 1970] 1717/70 Headings A4B and A4F A dishwashing machine comprises a housing carrying a dish-holding receptacle movable between extended and retracted positions projecting from and within the housing, respectively, and a supporting member, e.g. a bell-crank 1a, pivoted on the housing for movement between a supporting position in which a part thereof e.g. a roller 3, supportingly engages a downwardly facing surface 1 of the receptacle and a stowed position in which the part is higher than the surface 1 and the receptacle is in its retracted position, the arrangement being such that upon movement of the receptacle towards its extended position a surface 7 thereon engages the supporting member to pivot it to its supporting position. In the illustrated embodiment two bell-cranks 1a are provided for engaging two surfaces 1, and in the stowed position each roller 3 is received in a downwardly open slot 6, in the receptacle, bounded at one side by one of the surfaces 7. The supporting position of each bell-crank 1a is determined by the engagement of an arm 15 thereof with an eccentrically mounted adjustable stop 16. The receptacle is also supported at each side during its movement by the engagement of a downwardly facing surface 10 thereon with a roller 11, which is engaged by a stop 13 on the receptacle when the latter is fully extended. Additionally guide members secured to the receptacle travel along rails 12 during movement of the receptacle.
Patent GB-1524732-A (GB)
Title: Darts or the like
IPC: F42B6/00
Filed: 1977-01-14
Abstract: 1524732 Shafts for darts UNICORN PRODUCTS Ltd 14 Jan 1977 [16 Jan 1976] 01765/76 Heading A6S A shaft 10 for a dart has an adaptor 13 for attachment to a dart body 15 and a ferrule 13a slidable along the shaft to retain a flight, said ferrule 13a being cut from the adaptor 13. The ferrule may be fixed with a conical recess or slotted to positively receive the ends of a flight.
Patent GB-1340782-A (GB)
Title: Nuclear fuel rdo assemblies
IPC: G21C3/33
Filed: 1971-01-13
Abstract: 1340782 Fuel elements BABCOCK & WILCOX 13 Jan 1971 [14 Jan 1970] 1769/71 Heading G6C A nuclear fuel assembly comprises an array of spaced, parallel fuel rods 11 and end grids 14, 16 to which are secured the respective ends of longitudinally extending control rod guide tubes 12, the upper grid 16 being formed with T- shaped slots 24 accommodating the fuel rod heads 23 and the lower grid 14 being formed with recesses 41 for pin terminations 25 at the other ends of the fuel rods 11. Each of the grids 14, 16 is formed of vertical strips 18, 19 intersecting at right angles in "egg crate" manner, and at each desired location in a grid for a guide tube 12 the adjacent strips 18, 19 are welded to a vertically extending fitting 20 which receives an end length of the guide tube 12. The extremity of the guide tube 12 projecting beyond the fitting 20 is threaded and engaged by a nut 21. Each fuel rod 11 terminates at its upper end in a stem 22 surmounted by a head 23 which is accommodated in a slot 24 sufficiently closed below the head 23 to allow the fuel rod to be supported by its head from the upper grid 16. Each fuel rod terminates at its lower end in a pin 25 accommodated in the lower grid 14 in a recess 41. The recess 41 allows free downward movement of the rod lower end relative to the grid 14 under the influence of differential expansion in reactor operation. After the removal of the fuel assembly from the reactor core, it can be dismantled by removal of the nuts 21 at the upper grid 16, whereupon the grid 16 together with the fuel rods is moved away from the lower grid 14 until the grid 16 is clear of the guide tubes 12, the grid 16 then. being removed by displacing it laterally in a direction parallel to the alignments of the grid slots 24 at right angles to the planes of the slots. The fuel rods 11 can then be removed lengthwise from the remaining components of the assembly. In a modification, the heads of the fuel rods are at their lower ends and it is the lower grid which is formed with aligned slots accommodating the fuel rod heads. In this case, the fuel rods are supported for individual upward expansions. This arrangement suffers from the drawback, however, that in normal handling of the fuel assembly the weight of the fuel rods is borne by the control rod guide tubes.
Patent GB-1323182-A (GB)
Title: Apparatus for measuring light absorbance
IPC: G01J1/16
Filed: 1971-01-14
Abstract: 1323182 Photo-resistor circuits INSTRUMENTATION SPECIALTIES CO 14 Jan 1971 [24 July 1970] 1825/71 Heading G1A In an arrangement particularly suitable for measuring very small light absorbances or absorbance differences, and designed to cut down electrical noise, increase stability and to reduce response time to changes in light intensity, a photo-resistor is connected in series with an operational amplifier such that in use, a substantially constant voltage is maintained across the photo-resistor, a logarithmic conversion device also being provided so that output signals directly proportional to absorbance may be obtained. In Fig. 1, a low-pressure mercury lamp source illuminates the optical sample cell (both not shown) and the photo-resistor 13 receives light via a filter. A D.C. voltage is applied between terminals 15, 16, and because of the use of operational amplifier 19, the voltage drop across photo-cell 13 does not vary significantly as its resistance varies with incident intensity. Diode 14 acts as the logarithmic conversion device. In a similar circuit, Fig. 2 (not shown) the diode 14 is in the feedback path of the operational amplifier. Temperature compensation. Compensation for temperature variations affecting the diode conductivity may be provided as in the circuit of Fig. 3, which includes a bridge circuit of photoresistors 27, 28 for the reference and measurement branches and two pairs of matched diodes for doubly-sensitive logarithmic conversion, in the other branches. The operational amplifier feedback loop includes fixed resistors 36, 37, 40 and 41, a temperature sensitive resistor 38 having a negative coefficient, e.g. a thermistor, calibration resistor 39 and a range-changing switch 42. The figures given represent absorbance or optical density ranges, giving measurements across terminals 16, 35. Zeroing of the bridge is by resistors 21, 26, 29. The cells 27, 28 are matched for sensitivity, colour response and temperature coefficient and monitor reference and test optical cells. Cell 27 may be replaced by a fixed resistor, to give absolute absorbance. Ratioing circuit, Fig. 4 (not shown). The voltage at terminal 35 may be converted to one representing the ratio of the transmittances by the use of a further operational amplifier providing the anti-logarithm of the differences of the logarithms of photo-cell 27 and 28 outputs. Modifications. Circuits of Figs. 1-2 (2 not shown) may be incorporated in the circuit of Fig. 3 if necessary using a further operational amplifier. Logarithmic conversion may be by a transistor in the feedback path of an operational amplifier as an alternative to the use of a diode.
Patent GB-992540-A (GB)
Title: Relay circuit
Inventor: RICHARDS GEOFFREY CHARLES
IPC: H03K17/64
Filed: 1961-01-17
Abstract: 992,540. Protecting transistor switching circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 17, 1962 [Jan. 17, 1961], No. 1907/61. Heading H3T. In a relay circuit comprising a relay coil R in series with which is a transistor T forming a switching element, the back E.M.F. across the transistor is limited by means of a Zener diode Z shunting the relay coil R. A blocking rectifier X is connected in series with the Zener diode Z to ensure that the relay coil R is fully energized during the period that transistor T is conducting.
Patent GB-916100-A (GB)
Title: Improvements relating to insulating coatings on metals
Inventor: PARRISS WALTER HENRY
IPC: H01F27/32
Filed: 1960-01-20
Abstract: 916,100. Transformers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 17, 1961 [Jan. 20, 1960], No. 2121/60. Class 38 (2). A process of producing an insulated winding comprising a coiled conductor formed of a strip wound on edge (such as the primary of a current transformer) consists of heating the coiled conductor, immersing in a bed of powdered epoxy resin, fluidized by the passage of a gaseous medium therethrough to form an initial coating on the conductor. The coated conductor is then removed from the bed and heated to a temperature sufficient to cure the resin coating and while still hotdipped a second time in the bed to form a further insulating coating, the conductor then being compressed so that the turns are held together by the adhesion of the uncured second coating which is again heated to cure it. The coil may be cooled quickly before being compressed. Initially the coil may be pre-treated with an epoxy primer varnish to improve adhesion of the first coating to the copper. If it is desired to encapsulate the whole winding the dipping process is repeated. Details of several variations in the method of coating current transformer coils are given. Specifications 759,214 and 915,099 are referred to.
Patent GB-561722-A (GB)
Title: Purification of 3-picoline
Inventor: CISLAK FRANCIS EDWARD
Filed: 1943-02-09
Abstract: 3-Picoline is purified from 4-picoline and/or 2,6-lutidine by heating with an organic acid anhydride or halide (chloride, bromide, or iodide), whereby the impurities are converted to complex non-volatile products and the 3-picoline may be separated as by distillation, or by chemical means.  A condensation catalyst, such as zinc chloride, may be added.  Phthalic anhydride, stearic anhydride, butyric anhydride, acetic anhydride, acetyl chloride, bromide, or iodide, benzoyl chloride or p-toluenesulphonyl chloride may be used.
Patent GB-728707-A (GB)
Title: Improvements in or relating to ceramics
IPC: C04B28/30
Filed: 1953-01-26
Abstract: An oxychloride stone-like composition comprising, in per cent by weight, zinc oxide 38, magnesium oxide 48, sodium silicate 10, sodium borate 2, and soapstone 2, kneaded with a solution comprising zinc chloride (45 DEG  B<\>ae), magnesium chloride (30 DEG  B<\>ae), ammonium chloride (10 DEG  B<\>ae) and sodium chloride (5 DEG B<\>ae) (see Group V) before setting, can be sprayed into a foundation, e.g. of sand and high alumina cement or sand and calcined heavy magnesium carbonate.  After hardening, the product is dipped into a bath of, e.g. a 2 per cent. solution of magnesium and zinc fluosilicates.ALSO:A composition for the cold manufacture of ceramics consists of, in per cent by weight, zinc oxide 38; magnesia 48; sodium silicate 10; sodium borate 2; soapstone 2, kneaded with a solution of the chlorides of zinc (45 DEG  B<\>ae); magnesium (30 DEG B<\>ae); ammonium (10 DEG  B<\>ae); and sodium (5 DEG  B<\>ae).  The set products are hardened and made water impervious by immersion in a solution of zinc and magnesium fluosilicates.  Coloured products are obtained by the inclusion of dyes.
Patent GB-468886-A (GB)
Title: Improvements in or relating to drilling or like apparatus
IPC: B23Q17/24
Filed: 1937-01-26
Abstract: 468,886. Microscopes ; adjusting- apparatus. LEITZ GES., E., and LEITZ, E. Jan. 26, 1937, No. 2285. [Class 97 (i)] [Also in Group XXII] Drilling or like apparatus is provided with an optical system the whole or part of which is rigidly attached to the rotating spindle of the apparatus. In one arrangement, Fig. 1, the spindle A is hollow to accommodate the objective E of an optical system whose optical axis is coincident with the spindle axis. The eyepiece F of the system may be detachably mounted on the rear end of the sleeve B or may be rigidly mounted thereon, Cross-wires or other suitable measuring marks are provided at G. In another arrangement, Fig. 4, the objective is formed of separate elements E<1>, E<2> and a glass prism is mounted between the elements. The prism is built-up of parts H, J, K of which the parts H and J constitute an Abbe's prism for giving inversion of the image in two planes at right - angles. The surfaces of the part K in contact with the parts H and J are partially silvered, or opaque silvering on the portions of the contact surfaces of the part K adjacent to the optical axis with the remaining portions of such surfaces unsilvered may be employed. Any eccentricity of the drilling marks on the work will be immediately apparent since the erect and inverted images will not be coincident.
Patent GB-1156494-A (GB)
Title: Improvements in or relating to Digital Measuring Systems
Inventor: MACLEAN ROBERT SISTERSON
IPC: G01B13/02
Filed: 1967-01-16
Abstract: 1,156,494. Position digitizing. NATIONAL RESEARCH DEVELOPMENT CORP. 13 Nov. 1967 [16 Jan., 1967], No. 2296/67. Heading G4P. A position or displacement encoding scale having raised and lowered portions is sensed pneumatically by a head which is characterized in that when it passes from a raised portion of the scale to a lowered portion its output pressure rises, and vice versa. Two constructions of such a head are described. In the first, Fig. 2a, air Ps is forced into a rectangular conduit accurately matched to the slot dimensions and an output Po is taken from an inclined capillary tube connecting with the inlet conduit. By suitably adjusting the gap between the head and the scale a sharp positive pulse, Fig. 2c, is obtained when the head passes over a depression. In the second construction, Fig. 3, the outlet does not communicate directly with the inlet conduit. Instead the head is symmetrical, input air being forced down one tube 28 and output air being taken from a second tube 28. The output pressure from such a head is said to rise from negative to zero on passing from a raised portion on the scale to a lowered portion, and by suitable biasing this change can be translated to a negative to positive change. By staggering a plurality of such heads, e.g. ten, across a scale interpolation can be achieved, and an OR-NOR logic circuit (Fig. 10, not shown) is described whereby only a single one out of ten outputs is produced from ten heads.