baber/WOPTO huggingface dataset:
Patent GB-519721-A (GB)
Title: Improvements in and relating to the dealkylation of alkyl substituted phenols
IPC: C07C37/50
Filed: 1938-08-30
Abstract: 519,721. Dealkylation of alkyl phenols BAKELITE, Ltd. Aug. 30, 1938,No. 25430 Convention date, Sept. 14, 1937. [Class 2(iii) Alkyl substituted phenols are dealkylated to obtain lower phenolic homologues by passing a 'mixture of hydrogen and an alkylated phenol over a heated catalyst which has been obtained by heating nickel sulphide, or the silicate oxide or sulphide of barium, cadmium, iron, aluminium, or zinc in a finely divided form in an atmosphere of hydrogen. The activation of the catalyst is preferably conducted at 350‹C. or above, and should be at least 50‹C. above the initial dealkylation temperature. The catalysts may be conveniently obtained by precipitation by double decomposition, as this lends to small particle size. The relative volume of phenol and hydrogen is of importance and the preferred quantities are 4-4¢ parts by volume of hydrogen to one part by volume of phenol. In cases where a crude mixture of phenols is to be dealkylated it is preferred to first fractionate the mixture. and dealkylate each fraction at its most favourable temperature, since the temperature at which dealkylation is most effective is in the inverse ratio to the boiling points. The Specification contains examples of suitable .dealkylation temperatures for the various fractions. Catalysts suitable for the process may be made by (a) precipitating ferric chloride with ammonia and reducing ; (b) an acidified ferric acid chloride solution is treated with sodium ortho silicate and the gel dried and reduced ; (c) nickel sulphate is precipitated with hydrogen sulphide and then reduced ; (d) cadmium nitrate is precipitated with sodium hydroxide in dilute aqueous solution, dried and reduced ; (e) zinc nitrate is precipitated and reduced as in (d) above. In an example a xylenol fraction boiling between 218‹-222‹C. was passed through a tube containing a catalyst prepared as in (a) above together with hydrogen in the proportion of 4¢ parts to 1, the temperature being 400‹-600‹C. Specifications 277,394, [Class 2(iii)], 450,473, 452,095, and 452.158 are referred to.
Patent GB-1218247-A (GB)
Title: Improvements in and relating to machines for straightening strips or bands of metal
Inventor: UNGERER IRMA
IPC: B21D1/02
Filed: 1968-05-28
Abstract: 1,218,247. Straightening. I. UNGERER. 28 May, 1968 [27 Oct., 1967], No. 25471/68. Heading B3E. A machine for straightening strips or bands of metal passed under stretching tension through the machine having work rolls supported on pairs of backing-up rolls is characterized in that each work roll is supported individually and independently by the pairs of backing up rolls which are in contact only with the said each work roll without being in'contact with an adjacent work roll. In an embodiment two groups of backing-up rollers 4 and 5 are placed in rows beneath the lower work rolls 23, 24 and 25 of the machine (Fig. 3) and staggered (Fig. 4). Adjacent pairs of rollers in another embodiment vary in length (Fig. 6).
Patent GB-598358-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B15/66
Filed: 1944-12-19
Abstract: 598,358. Cams. LAMBACH, F. Dec. 19, 1944, No. 25503. [Class 80(iii)] [Also in Group VIII] To facilitate the timing of the various operations performed in a knitting-machine (e.g. a warp knitting - machine) by mechanisms actuated by cams or the like adjustably mounted on their shafts, each cam or the like is provided with engaging means arranged in a predetermined position relative to the cam contour for a temporary positive coupling thereto of a movable member of a cam position indicator, in a predetermined position relative to the cam contour. A co-operating stationary member is temporarily held by associated supporting means in a predetermined position relative to the cam shaft. The cam may be provided with holes 32 or 132 which receive pins on a movable platelike member 38 or 138 bearing a scale with which co-operates a pointer 40 or 140. In the form shown in Fig. 2, the pointer 40 is adjustably held in a support 48 slidably secured to a clamp 50, which may be temporarily secured to a fixed part of the machine or to a cam follower shaft 54. In the construction of Fig. 1, the pointer 140 is held in a bar 146, one end of which is hooked at 150 for engagement with the shaft 28 carrying the pattern wheels 30 to be adjusted. In the modification of Fig. 5, the stationary member 250 has a recess 262 for the reception of the appropriate one of a series of gauge blocks 240. The gauge block is placed in the recess and the cam to be adjusted is rotated on its shaft until the movable member 238 abuts against the block. In manufacturing a cam, the holes 32 are drilled in the side of the cam blank in a predetermined accurate relation to a centre bore and the blank is thereafter milled, to produce the contour, by locating from the holes 32. Individual indicators may be used for different types of cam. When the indicator is to be used only for a certain knitting-machine, a non-adjustable support may be used for the stationary member. The pointer may be carried by the movable member and the scale by the fixed member. A single hole of polygonal cross section may constitute the engaging means on the cam. The stationary member may have a support for connection with the floor instead of with the knitting-machine.
Patent GB-382024-A (GB)
Title: Improvements in or relating to centrifugal machines for making conical hollow bodies, particularly reinforced concrete masts or the like
IPC: B28B21/30
Filed: 1931-09-11
Abstract: 382,024. Centrifugally moulding concrete hollow masts &c. STœHLER, M., Gereonshaus, and LœHDORFF, P., 79, Lindenthalgurtel, Lindenthal, both in Cologne, Germany. Sept. 11, 1931, No. 25578. Convention date, Sept. 26, 1930. [Class 87 (ii).] Hollow masts, poles, &c., of reinforced concrete and particularly such articles of tapered form are moulded by supplying the material to a mould m having guide rings o whereby it is driven by a pair of conical driving members b, c mounted on shafts f which are in the same plane and which are rotated in the same direction by gearing i, l. The conical driving members may be in the form of spaced discs e keyed to the shafts f. The rings o may be grooved peripherally or a single guide may be provided to prevent axial displacement of the mould. The vertices of the cones passing through the peripheries of the rings o and the discs e meet in a common point. The mould m may be supported'within the rings o by webs p thereby allowing moulds of zero or other taper to be rotated.
Patent GB-224065-A (GB)
Title: An improved process for obtaining a deposition of chromium by electrolysis
IPC: C25D17/10
Filed: 1923-10-13
Abstract: 224,065. Coignard, A. J. Oct. 13, 1923. Chromium, depositing; supporting electrodes; coloured surfaces, producing. - In depositing chromium from an alkaline, acid, or neutral electrolyte containing chloride or other salt of chromium, or from a bichromate, chromic acid or like compound, anodes consisting of ferrochromium or a chromium ore or compound supported on perforated or network baskets or trays of a conductive material which is not soluble in the bath, such as lead, are employed. The concentration of the electrolyte may be from 10 to 50 per cent. Two per cent of hydrochloric, sulphuric or other acid may be added when electrolysing at 80‹ C., a smaller acidulation sufficing at a lower temperature. The bath may be cooled or heated by an internal or external coil. At low temperatures the deposit is of a dull blue colour and at high temperatures white.
Patent GB-480717-A (GB)
Title: Improvements in or relating to propelling pencils
IPC: B43K21/16
Filed: 1936-08-28
Abstract: 480,717. Pencil holders. MABIE, TODD, & CO., Ltd., JOHNSON, L. W., and SEARS, E. S. Aug. 28, 1936, No. 23663. [Class 146 (iii)] In pencil holders of the kind in which a step-by-step adjustment of the lead is obtained by reciprocation of a gripper acting in association with a helical spring, the movement of the gripper is obtained by rotation of an operating-cap or the like. The gripper 6 is normally held in its retracted position by a spring 28 compressed between a fixed stop 31 and a stop 30 secured to the gripper and is moved forward by a collar 14 engaging the stop 30. The collar is provided with a pin 24 engaging a longitudinal slot 26 in the casing and a cam surface 20 on a sleeve 8 secured to an extension 3 on a magazine 2 adapted to be rotated by the operating-cap.
Patent GB-301888-A (GB)
Title: An improved let-off motion of looms for weaving
IPC: D03D49/06
Filed: 1928-09-07
Abstract: 301,888. Franklin Machine Co., (Assignees of Seymour, W. I., and Shanahan, L. J.). Dec. 9, 1927, [Convention date]. Letting-off warps. - Relates to warp beams driven from a. rotating shaft of the loom through ratchet and other gearing, the rate of let-off being controlled by a whip member under the influence of the warp tension, while means is provided for disengaging the pawl from the ratchet wheel. The warp beam 28 is geared to a braked worm shaft 15 having a hand-wheel 16 and a ratchet wheel 21 adapted to be operated by a pawl carrier 17, Fig. 5, loose on the worm shaft and geared to a bevel wheel which is mounted on a shaft 10 having an arm 11 in lost-motion connection with a connecting-rod 3 pivoted to a rotating crank arm 2. The whip member or roll 33 is mounted on one arm of a three-armed lever, one arm 34 carrying a weight 23 while the other arm 35 is connected to a rod 24 pivoted on a shaft 25 which is rockable about the worm shaft and serves as an abutment for limiting the lowermost position of the carrier 17. As the rod 3 moves downwardly, the arm 11 moves to the left by gravity until a notch 17<1> in the pawl carrier engages the shaft 25, the slot in the rod 3 then allows idle motion. On the return motion of the rod 3, the pawls 18 engage the ratchet wheel 21 to drive the beam. When the tension increases, the rod 24 falls and allows further motion of the pawl carrier, so that the let-off is increased. In order to put the let-off mechanism out of action for hand adjustment of the beam, a curved member 39 straddling the worm shaft is adapted to be raised by link and lever devices from a hand lever 45 to engage projections on the pawls, whereby they are raised from engagement with the ratchet wheel.
Patent GB-1048782-A (GB)
Title: Improvements in apparatus for producing flakes of sodium hydroxide from fluid moltensodium hydroxide
IPC: C01D1/44
Filed: 1965-06-17
Abstract: 1, 048, 782. Making flakes of sodium hydroxide. HCH. BERTRAMS A.G. June 17, 1965 [June 17, 1964 No. 25751/65. Heading B2A. Apparatus for producing flakes of sodium hydroxide from fluid molten sodium hydroxide comprises a notable cooling roller 3 dipping into a tank 9 containing the molten hydroxide, the surface of the roller, which has a scraper 11 co-operating therewith, being grooved obliquely to the axis of rotation of the roller. The grooves in the roller preferably have a rectangular cross-section and follow a helical path. The inner surface of the roller is sprayed with cooling fluid, e.g. water, by means of nozzles 6 of a spraying tube 7 and used fluid is led away by a dip tube 8. The tank is tiltable about a base frame and adjustable in position. The upper part of the roller is curved by a hood 12 so as to provide an air cushion which is heated.
Patent GB-790910-A (GB)
Title: Improvements in or relating to seed dressing compositions
Inventor: WOODWARD ROBERT CECIL
Filed: 1955-09-08
Abstract: A seed dressing composition includes in admixture as active ingredients the gamma isomer of benzene hexachloride, tetramethyl thiouram disulphide and hexachlorobenzene.  Preferably an inert pulverulent solid diluent, such as china clay is included and the active ingredients are present in the proportions of 40 parts of the gamma isomer, 15 parts of the disulphide and 15 to 20 parts of the hexachlorobenzene.ALSO:A seed dressing composition includes in admixture as active ingredients the gamma isomer of benzene hexachloride, tetramethyl thiouram disulphide and hexachlorobenzene. Preferably an inert pulverulent solid diluent, such as china clay, is included and the active ingredients are present in the proportions of 40 parts of the gamma isomer, 15 parts of the disulphide and 15 to 20 parts of the hexachlorobenzene.
Patent GB-880794-A (GB)
Title: Process for the production of metallic niobium or tantalum by an electrolytic method
IPC: C25C3/34
Filed: 1958-08-11
Abstract: 880,794. Electrodeposition of niobium and tantalum. CIBA Ltd. Aug. 11, 1958 [Aug. 9, 1957], No. 25783/58. Class 41. In a process for the production of metallic niobium or tantalum by the electrolysis of a melt, the vapour of the pentachloride of the metal is introduced into an oxygen-free melt consisting of an alkaline earth metal chloride and/or alkali metal chloride and an alkaline earth metal fluoride or alkali metal fluoride and is electrolysed at an anodic current density below the critical value for occurrence of the anode effect given by the fluoride content in the melt, and the pentachloride vapour is continuously introduced into the melt during electrolysis at a rate stoichiometrically related to the effective current, and during the electrolysis the rate of supply of pentachloride vapour maintains a constant content of metal in the bath and by being related to the fluoride concentration of the melt retains a part of the alkaline earth metal fluoride or alkali earth metal fluoride in the melt as such. Preferably the current density is adjusted to be, at most, equal to the figure given by the formula amps./dm<SP>2</SP>, where e is the base of natural logarithms, A is the percentage of free fluoride in the melt, and T is the temperature in degrees Centigrade. In an example there was used a cell consisting of a graphite crucible which also served as the anode. The cathode was a nickel rod dipping into the middle of the electrolyte in the crucible. The cathode was surrounded by a graphite tube which also served as a conduit for introducing the pentachloride vapour. The cell was externally heated. The electrolyte comprised a fused mixture of sodium chloride, potassium chloride and potassium fluoride maintained at a temperature of 750‹ C. Tantalum pentachloride vapour was introduced into the melt which was electrolysed with a current of 60 amperes. After the electrolysis the space above the electrolyte was scavenged with argon and the cathode was withdrawn. A further example is given of the production of niobium using a similar fused salt melt and a third example refers to the production of tantalum from a melt composed of sodium chloride, potassium chloride and barium fluoride. Specifications 734,094 and 873,844 are referred to.
Patent GB-479955-A (GB)
Title: Improvements in the ornamentation of footwear
IPC: A43B23/24
Filed: 1936-09-23
Abstract: 479,955. Ornamenting footwear. HALDINSTEIN. G. E. Sept. 23, 1936, No. 25849. [Classes 17 (ii) and 141] A shoe upper is made in various parts such as toe cap c, vamp b, and body a, and each part is edged with braid d, before the parts are attached together. Braid may aso be placed around the edge of the shoe, as shown. The braid may be formed of a. centre core of string completely covered by twisted silk and attached to a strip of braid.
Patent GB-838682-A (GB)
Title: Improvements in or relating to a method of making rod-shaped composite spark plug electrodes
IPC: B22F3/20
Filed: 1958-08-13
Abstract: 838,682. Powder metallurgy. GENERAL MOTORS CORPORATION. Aug. 13, 1958 [Sept. 25, 1957], No. 25988/58. Class 82(1) [Also in Group XXII] Composite spark plug electrodes are made by compacting two or more layers of different powdered metals, sintering at a temperature below the melting point of the lowest melting point metal of the compact and then extruding the sintered compact transversely of the layers to form an electrode with a core of one metal and a sheath of another. A heat and corrosion resistant metal such as Ni, Pt or Fe forms the sheath while a metal with a high heat conductivity such as Cu or Ag forms the core. Two layers of 100 mesh Cu powder and 100 mesh Ni powder 6, 10 (Fig. 2) are simultaneously compacted at 100,000 p.s.i. and the compact sintered at 1850‹F for one hour under hydrogen. The compact is re-pressed at 150,000 p.s.i. annealed at 1850‹F for two hours in hydrogen and finally extruded with the Ni layer adjacent the extrusion orifice to form a rod shaped composite article with a Cu core 26 and a Ni sheath 28 and Ni tip 36 (Fig. 8). The composite rod is then shaped by conventional forming and cutting operations to form a spark plug centre electrode. By varying the shape of the interface of the powder layers of the "green compact" by compacting the first powder layer with a shaped top punch the thickness of the bottom or top and sides of the extruded metal sheath may be varied (Figs. 11-18 not shown). The composite "green compact" may also be produced by pressing the metal layers separately and finally pressing them together. A three layer composite electrode having a Cu core, an Fe sheath and a Ni tin can also be made by this process.
Patent GB-445534-A (GB)
Title: Improvements in the production of rubber goods
IPC: C08K5/521
Filed: 1934-09-10
Abstract: Tackiness of vulcanized rubber articles is prevented or removed by treatment of the rubber before or after vulcanization with a phosphatide and an aliphatic or aromatic acid, or salt thereof. These materials may be mixed, or condensed by heating, and added to the rubber, particularly dispersions or solutions, or they may be added separately.  Shaped articles before or after vulcanization may be dipped into a solution or dispersion of the two types of material, or may be treated with the materials separately.  A suitable phosphatide is lecithin; acids specified are stearic, palmitic, oleic, benzoic. According to an example, gloves &c. are made by dipping a former into a mix of latex (100 parts rubber) 1 part of piperidine pentamethylene dithio carbamate, 1 part of zinc oxide, 2 parts of sulphur and 3 parts of a condensation product produced by heating 75 parts of lecithin and 25 parts of oleic acid at 60 DEG  C. for three quarters of an hour with stirring, and dispersing in dilute ammonia.
Patent GB-362365-A (GB)
Title: Improvements relating to steam generating plant
IPC: F22B1/08
Filed: 1930-09-01
Abstract: 362,365. Indirectly heated steam boilers. STUBBS, A., 390, Wilbraham Road,. Chorlton - cum - Hardy, Manchester. Sept. 1, 1930, No. 26104. [Class 123 (ii).] In steam generators of the kind described in Specification 340,295, the economizer 8 which, together with the air heater 12, is arranged in a flue above the generator, discharges into the evaporator 13, the normal water level in which is at or above the economizer outlet. The water level in the boiler drum 5 may be regulated by a valve 23 in the feedwater pipe 22 between the evaporator and the drum, or by a valve 16 in the pipe 15 between the steam spaces of the evaporator and the drum. A valve 10 in the feedwater supply pipe 11 controls the level in the evaporator.
Patent GB-676404-A (GB)
Title: Device for determining the gradients of terrestrial magnetism
IPC: G01R33/022
Filed: 1950-10-26
Abstract: 676,404. Geophysical surveying. electrically. TALALMANYOKAT ERTEKESITO VALIALAT. Oct. 26, 1950 [Oct. 26, 1949], No. 26159/50. Class 37. Apparatus for ascertaining the rate of change of the intensity of a magnetic field at a given place by the use of a rotating coil system enables deposits of magnetic material to be located. Two windings 7, 8, Figs. 2, 3, are assembled on a flat disc 9 which is rotated about its axis 10. The windings are connected in series aiding and brought out by leads 11, 12 to two contacts 14, 15 on a disc 13 rotating synchronously with the windings. Two fixed pairs of contacts 17, 18 and 19, 20 are located at right angles on a ring 16 surrounding the disc 13 to make contact with the moving contacts 14, 15, and connected via a change-over switch 28 to an amplifier 29 and voltmeter 30. Initially the axis of rotation 10 is made vertical, and the induced voltages produced in the windings 7, 8 in the position determined by the fixed pairs of contacts 17, 18 and 19, 20 are determined. The apparatus is then turned so that the axis of rotation is in each of the other two mutually perpendicular directions, and the induced voltages ascertained from the meter 30. A mathematical analysis shows how the magnetic field gradients at the point of measurements may be determined from these voltages. Hence, a graph of the contour of the magnetic field may be drawn, and the position of magnetic bodies distorting the field may be determined. In a modification, the instantaneous voltages in the windings are opposed by a measured, variable D.C. voltage, so that the meter 30 acts as a null indicator. In a further modification (not shown), the windings are adjustably fixed and a rotating disc with two symmetrical apertures is rotated above the windings, inducing in them a sine wave. The windings are moved round the axis 10 until the instantaneous voltage is a maximum, and its magnitude enables one of the magnetic field gradients to be determined. To increase the induced voltage the rotating disc may be replaced by two windings 7, 8, Fig. 7, and an opposing voltage is introduced to enable a null reading to be obtained on the indicator 30, by two coils 39, 40 rotating synchronously with the windings 7, 8 and connected in series with them, the coils 39, 40 being located inside an adjustably fixed winding 41 whose winding plane is parallel with the axis of rotation 10, and which may be moved round the axis 10. The voltage induced in the fixed detector windings 37, 38 is first made a maximum by moving the windings round the axis 10, and is then neutralized by increasing the voltage in the fixed coil 41 froma potentiometer 43, and adjusting the phase of the opposing voltage by moving coil 41 round the axis 10.
Patent GB-648943-A (GB)
Title: Improvements in or relating to heat exchangers and to a method of manufacturing the same
IPC: F28F9/00
Filed: 1948-10-07
Abstract: 648,943. Cooling-radiators. LAWRENCE, J. W. Oct. 7, 1948, No. 26170. [Class 64(iii)] In a honeycomb type heat-exchanger which includes an inner casing 16 enclosing a matrix of tubes (not shown), an outer casing 1 spaced from the inner casing to form a warm-up chamber, and an intershell baffle 24 in the space between the casings, the intershell baffle is welded, brazed, or hard soldered to both the inner and outer casings which are themselves welded, brazed, or hard soldered at their ends either to each other or to spacing rings 30, Fig. 9. In the oil cooler shown, the inner and outer casings are formed from sheet brass, sheet steel, cupro-nickel or other sheet metal rolled to cylindrical form, the abutting edges being joined by welding, brazing, or hard soldering. In one form the meeting edges are butt seam welded, planished and silver soldered. The inner casing 16 is slit along lines c corresponding to the form of the intershell baffle 24 which is then hard soldered to the shell through the slits. The outer casing 1 is provided with swages 3 for strength and to form annular channels for the fluid flowing through the warm-up chamber. Swages may also be formed in the inner casing. the usual inlet, byepass and outlet ports 6, 7, 8 and a drain hole are provided.