baber/WOPTO huggingface dataset:
Patent GB-1065612-A (GB)
Title: Improvements in or relating to film flow packings
Inventor: GREER KENT REANEY
IPC: B22D11/11
Filed: 1963-03-04
Abstract: 1,065,612. Contacting gases with liquids &c. IMPERIAL CHEMICAL INDUSTRIES Ltd. Feb. 21, 1964 [March 4. 1963], No. 8611/63. Heading B1R. [Also in Divisions B5 and F4] A packing for film flow liquid cooling apparatus comprises a stack of alternate flat and corrugated sheets, each corrugation having a portion which is curved in the plane of the sheet to an extent sufficient to preclude a straight line path through that portion of the corrugation. As shown, each corrugation has two sides 1, 2, which form a V at an apex 3 with an included angle of 60, and has an upper curved portion 10, 11 and a lower straight portion. In the curved portion the corrugation is first displaced by a distance C to one side of the axis 5, i.e. the vertical line passing through the uppermost end of the apex 3, and is then displaced by a distance D to the other side of the axis, the distances C and D each being equal to half the width of the corrugation B. The lower part of the corrugation may be curved to such an extent that the lowermost point of the apex 3 lies on the axis 5 (Figs. 3 and 5, not shown), while in the embodiment of Fig. 1 (not shown) the upper portion of the corrugation is displaced to only one side of the axis by an amount equal to the width of the corrugation. When the sheets are assembled alternately with flat sheets to form the packing, the corrugations may all curve in the same sense (Fig. 4, not shown) or may be arranged (Fig. 5, not shown) so that the corrugations (30) and (34) of the sheets on opposite sides of the flat sheet (32) curve in opposite senses. The three sheets are secured together by stud and socket means at those points (35, 36) at which the corrugations on opposite sides of sheet (32) could be in contact if the latter were omitted. The sheets are formed of organic thermoplastic material; a list of suitable materials being given.
Patent GB-903271-A (GB)
Title: Polyimides and their production
IPC: C08G73/10
Filed: 1960-03-11
Abstract: Polyimides are made by reacting approximately equimolar proportions of at least one diamine having the structural formula H2N-R1-NH2 where R1 is a divalent radical containing at least two carbon atoms, the two amino groups of said diamine each attached to separate carbon atoms of said divalent radical; with at least one tetracarboxylic acid dianhydride having the structural formula <FORM:0903271/IV(a)/1> where R is a tetravalent radical containing at least 2 carbon atoms; no more than 2 carbonyl groups of said dianhydride attached to any one carbon atom of said tetravalent radical; in an organic solvent for at least one reactant whose functional groups do not react with either of the reactants to a greater extent than the reactants do with each other, under substantially anhydrous conditions while maintaining the temperature throughout the reaction below 60 DEG C. to provide a polymer containing at least 50% polyamide-acid having a viscosity measured at 30 DEG C. in a 0,5% by weight solution, of at least 0,1 and reacting the polymer with an aliphatic acid anhydride or carbodiimide to convert the polyamide-acid to a polyimide.  Many suitable diamines are specified, examples being 4:41-diaminodiphenyl propane, m-xylylene diamine and 1:12-diaminooctadecane.  Specified dianhydrides are pyromellitic, 2:3:6:7-naphthalene tetracarboxylic, 1:2:5:6-naphthalene tetracarboxylic, 2:21:3:31-diphenyl tetracarboxylic, 2:2-bis(3:4-dicarboxyphenyl) propane, bis(3:4-dicarboxyphenyl) sulphone, perylene-3:4:9:10-tetracarboxylic, bis(3:4-dicarboxyphenyl) ether and ethylene tetracarboxylic acid dianhydride.  Specified solvents are N:N-dimethyl formamide, N:N-dimethyl acetamide, N:N-diethyl formamide, N:N-diethyl acetamide, N:N-dimethylmethoxy acetamide, N-methyl caprolactam, dimethyl sulphoxide, N-methyl-2-pyrrolidone, tetramethylene urea, pyridine, dimethyl sulphone, formamide, N-methyl formamide or N-acetyl pyrrolidone alone or in admixture with benzene, benzonitrile, dioxane, butyrolactone, xylene, toluene or cyclohexane.  Specified aliphatic acid anhydrides are acetic, propionic, butyric and valeric anhydride.  Many examples are given.  Specification 898,651 is referred to.
Patent GB-1424051-A (GB)
Title: Photographic camera
IPC: G03B7/24
Filed: 1973-02-22
Abstract: 1424051 Exposure control EASTMAN KODAK CO 22 Feb 1973 [22 Feb 1972] 8729/73 Headings G2A and G2X A collapsible camera has means for sensing a coding on a film container indicative of a film characteristic, e.g. sensitivity, and adjusting exposure control accordingly, this sensing and adjustment taking place when the camera is in the collapsed position. As shown, a sloping door portion 14 having an inclined end-wall 20 carrying the lens 18 is attached to the camera housing by a hinge pin 16. The door 14 can pivot from the closed position of Fig. 1 (not shown) to the open and operative position of Fig. 2 (not shown). The film container 32 may contain a stack of self-processing film units, and has a forwardly extending tab 40 whose position is indicative of the film sensitivity. By way of example, it is assumed that the film may be either colour film of ASA 300, in which case the tab is positioned as at 40, or black-and-white film of ASA 3000, in which case the tab is positioned as shown in broken line at 40'. A. sliding plate 86, having a large aperture 90 and a small aperture 92, is located behind lens 18, and can slide in grooves 94 in wall 20. The sensing means is formed by a stiff piece of wire 96 which passes loosely through a loop at one end of a bracket 98 secured to door 14 by rivets 100. One end of wire 96 is bent to form a crossbar 106, and the other end is bent to form a crank arm 102 extending through a slot 104 in plate 86. If door 14 is closed when the camera is loaded with film, then either tab 40 will push against end 110 of crossbar 106, pivoting wire 96 so plate 86 is drawn to the left, or tab 40' will push against end 112 of the crossbar pivoting wire 96 so that plate 86 is drawn to the right. Thus either the large aperture 90 or the small aperture 92 will be aligned with lens 18 according to the film sensitivity. The film is loaded into the camera through a door 42 at the back, and a latching arrangement is provided which ensures that door 42 can be opened only when door 14 is closed, i.e. the camera is in the collapsed position, so that adjustment of the exposure control means will be correctly effected in accordance with the coding on the new film pack.
Patent GB-552109-A (GB)
Title: Improvements in and relating to reactors
IPC: H02M5/12
Filed: 1942-06-25
Abstract: 552,109. Polyphase reactors. BRITISH THOMSON-HOUSTON CO., Ltd. June 25, 1942, No. 874,4. , Convention date, June 28, 1941. [Class 38 (ii)] In a shunt reactor system for polyphase AC. having a plurality of winding legs one or more magnetic return paths, a polyphase grounded neutral zigzag winding is mounted on the legs, the ratio of zig turns such as A1 or B1 or C1 to zag turns such as C2 or A2 or B2 being less than unity. Non-magnetic gaps 6 are arranged in the winding legs for giving the reactor the desired amount of positive sequency reactance, which may for example . compensate for the capacitive reactance to ground of the conductors 1 of the main circuit. In the event of a conductor 1 being grounded so that the system becomes unsymmetrical and there is a zero sequence system, it is desirable that the zero sequence reaction should be small compared with the positive sequence reaction, and this is achieved in the above arrangement by choosing a suitable ratio of "zig" to "zag" turns. When there is such an unbalance, the windings on each leg oppose each other so far as the zero sequence component is concerned, there is very little magnetic flux in the outer Legs, no non-magnetic gaps in these legs are required, and there is. substantially no leakage flux to cause eddy currents and undesired heating in the surrounding easing. In a modification, Fig. 7 (not shown) the windings are arranged in three separate single-phase reactors U.S.A. Specification 2,034,518 is..referred to.
Patent GB-979532-A (GB)
Title: Hydraulic apparatus
Inventor: THOMA OSWALD
IPC: F16H61/42
Filed: 1962-03-07
Abstract: 979,532. Hydraulic transmissions. DOWTY HYDRAULIC UNITS Ltd. Jan. 28, 1963 [March 7, 1962], No. 8810/62. Heading F2C. An hydraulic power transmission comprises a tilting head pump 1 and a tilting head motor 2 mounted in trunnions 79, 80 in a housing supporting pump 5 and motor 8 shafts, the pump and motor being connected hydraulically and by an invariable length rigid link 13 pivotally connected to the pump and motor at positions spaced from the tilt axes. The length of the link 13 and the position of the pivot points 12, 14 on the pump and motor is such that when the pump is at zero delivery the pump is at maximum stroke. The motor shaft 8 is coupled by gears 15, 16 to a vehicle differential cage 17 driving axle shafts 18, 19. The pump and motor are of similar construction as shown in Fig. 7, having a flange 44 on the driving shaft 5 with a circular groove retaining the ends 46 of connecting rods 69 coupled to pistons 68 in a cylinder block 58 rotatable about a shaft 75 in a yoke member 55 pivotable in trunnions 47, 48 formed in the gear housing. Pipes 3, 4 from the trunnions connect the pump and motor in parallel; the pipes leading by passages 63, 65 to ports 72 in the cylinder head. The pump may be moved about its tilt axis by a servo unit 87. In another embodiment, Fig. 4, two motors 2, 22 are connected in parallel by pipes 3, 4; 13, 14 and by rigid links 13, 33 with the pump 1; the two motors driving the axle shafts 18, 19 which have a direct drive clutch 37 between them. The links 13, 13 may be used as the hydraulic connecting pipes by the use of swivelling joints.
Patent GB-426836-A (GB)
Title: Improvements in or relating to the treatment of rubber
IPC: C08C1/15
Filed: 1934-03-21
Abstract: In preparing rubber especially intended for use wherever contact with copper or copper containing alloys or other metals liable to react with rubber is liable to occur, for example, in unloaded submarine electrical conductors, latex is heated with sodium hydroxide or other alkali, the rubber is coagulated with non-acid chemicals such as ethyl alcohol or acetone or other alcohols or ketones, and the rubber is then washed.  By this method deproteinized rubber may be prepared from which a large proportion of the fatty acid constituents of rubber resins, believed to be responsible for the formation of "green substance" in submarine rubber insulating materials, have been removed.  An example is given.  Insulating compositions may comprise rubber prepared by the above process deresinated balata, and a small quantity of a wax, for example, of the paraffin series, which is solid at room temperature.  Rubber prepared by this process and subsequently depolymerized by known methods may also be used as a pressure equalizing and/or filling material.
Patent GB-1354844-A (GB)
Title: Cabinets for vessels
IPC: A47L15/42
Filed: 1972-02-25
Abstract: 1354844 Dishwashing machines FISHER & PAYKEL Ltd 25 Feb 1972 [28 Feb 1971] 8827/72 Heading A4F [Also in Division E2] In a cabinet for a dishwashing machine, or other appliance incorporating a vessel, and having a door hinged along a lower edge of a front loading opening, leakage from the vessel below the door is prevented or minimized when the door is closed by the engagement in a channel 12, filled in use of the appliance with water to a predetermined level, of a web 14 depending from alower edge of the door 13. In the illustrated dishwashing machine the channel 12 is filled with water agitated during the washing operation by an impeller. A further web 15 on the door 13 extends over the channel wall 8 and prevents excessive turbulence in the channel 12. A hinging and counterbalancing structure for the door comprises two torsion bar springs 23, one end of each of which extends through a pivot hole 19 in a hinge member 20 secured to the door and is formed with a J-shaped extremity 29 which is held against rotation in a slot 31 in a bracket 32 secured to the machine frame. The opposite end of each spring 23 is held in an aperture 25 and a notch 27 in the hinge member 18. When the door is opened an end 30 of each spring 23 forms a stop engaged by a hooked portion 33 of a hinge member 20, and the resistance to torsion of the springs 23 in part counterbalances the weight of the door.
Patent GB-797212-A (GB)
Title: Freezing tray for the production of ice cubes in refrigerators
IPC: F25C1/24
Filed: 1955-03-25
Abstract: 797,212. Ice-making. BROWN, BOVERI & CIE. AKT.-GES. March 25, 1955 [April 24, 1954], No. 8886/55. Class 29 The longitudinal wall of an ice-tray grid consists of an uuper horizontal wire, chain, or the like 1 from which depend chains 5, Fig. 1, needle like members, Fig. 3, or strips, Fig. 7, the member 1 being supported on the ends of the tray as at 2 and 3 and being capable of being tensioned to break the ice bonds. As shown in Fig. 7, the tensioning means includes a lever 14 which, when swung upwards, first causes a cam member 11 to break the bond between the tray and its support and then effects the tensioning. The transverse walls 4 are carried by the member 1, having horizontal bottom flanges 7, may be divided vertically into strip-like members, and are formed in one part extending from side to side of the tray. In a modified form, Fig. 6, the transverse walls are made in two parts, separately articulated to member 1 by shackles 6, 18 in such manner that, upon tensioning the member 1, the two parts are moved in succession. In a modified form, Figs. 9 and 10 (not shown), member 1 is passed at one or each end round a drum which, when rotated, tensions the member. In a further modification, Figs. 11 and 12 (not shown), the transverse walls are separate from the longitudinal wall and are provided with their own tensioning means.
Patent GB-853642-A (GB)
Title: Tire rasp
IPC: B29B17/02
Filed: 1959-03-16
Abstract: 853,642. Tyre rasps. JENSEN, E. B. March 16, 1959, No. 9063/59. Class 31 (1). A replaceable blade 23, Fig. 1, for a tyre rasp 20, Fig. 6, comprises a sheet metal member having cut-out portions 46 providing teeth 47 which are preferably angularly related to the plane of the blade, as shown in Fig. 2. In a modification, the outer surface of each tooth is notched to provide two prongs extending to opposite sides of the plane of the tooth. In another modification, every other tooth is deflected at an angle to one side of the plane of the blade and the intervening teeth to the other side of the blade plane. The blades have openings 30 for mounting them together with spacers 24 on pairs of pins extending transversely between plates 21, 22 mounted on the shaft A of an electric motor M, a peripheral shoulder 31 provided on each plate having four quadrant shaped faces tapered in such a way as to set the blades into a helical form.
Patent GB-467865-A (GB)
Title: Mains supply apparatus for wireless receivers e.g. television receivers
IPC: H04B15/02
Filed: 1936-03-27
Abstract: 467,865. Converting. RADIOAKT.- GES. D. S. LOEWE. March 27, 1936, No. 9140. Convention date, March 29, 1935. [Class 38 (ii)] In a rectifying arrangement for supplying high tension current to television receivers &c. and comprising a transformer 1, rectifier 3, and a smoothing network 5, 6, 7, interference due to high frequency oscillations arising through brush discharges from the cathode-heating winding 2 is prevented by shunting the winding by a condenser 16 so as to detune the oscillations to a non-interfering frequency. Further, a resistance 9 may be inserted before the smoothing network.
Patent GB-905569-A (GB)
Title: Improvements in escape for lifting hook of diesel pile hammer
Inventor: FREDERICK LEONARD LONG
IPC: E02D7/12
Filed: 1961-03-13
Abstract: 905,569. Pile - driving. McKIERNANTERRY CORPORATION. March 13, 1961, No. 9141/61. Class 68 (2). In a Diesel hammer having a ram 13 operating as a piston in a cylinder 9 and a tripblock 7 operable (by hoisting rope 27) to lift the ram and to then drop it to start the hammer, the ram having an annular groove with an undercut lifting shoulder 14 at the top and a rounded abutment shoulder 33 at the bottom, the block having a lifting hook 10 pivoted at its outer end on the block (at 15) and adapted to be lifted into position projecting through a slot 11 in the cylinder into engagement with the lifting shoulder 14 by pivotally connected levers 19, 16 forming a toggle, the lever 16 having a projecting trip arm 21 engageable with a bottom stop 22 to rock the toggle past dead centre into a locked position supporting the lifting hook in the projecting ram lifting position and into engagement with an upper stop 23 to "break" the toggle and lower the lifting hook into a position clear of the ram and a spring detent 25 for yieldingly holding the toggle in the hook projecting and non-projecting positions effected by engagement of the trip-lever 16 with the stops 22, 23, an escape mechanism for preventing injury to the lifting hook and toggle mechanism in the event of the trip block being lowered and the hook being projected by engagement of the trip arm with the bottom stop while the ram is under impulse of an upward stroke includes a pivot pin 15 pivotally and slidingly supporting the outer end of the lifting hook 10 in the trip block, arranged to permit simple up and down swinging movement of the lifting hook about the pivot centre and bodily movement of the hook toward and away from the ram and a spring 31 yieldingly holding the lifting hook thrust toward the ram in the simple pivoting positions described and yieldable to the thrust of the abutment shoulder 33 at the bottom of the groove in the ram and the lower inner edge of the lifting hook having a rounded cam surface 35 engageable by the rounded shoulder 33 of the ram groove whereby the hook 10 in the projected position will be forced outwardly clear of the ram, saving the hook mechanism from harm under conditions described.
Patent GB-1246604-A (GB)
Title: Improvements in water deficiency safety devices
IPC: F23N1/08
Filed: 1970-02-26
Abstract: 1,246,604. Valves. JUNKERS & CO. G.m.b.H. 26 Feb., 1970 [27 Feb., 1969], No. 9214/70 Heading F2V. In a water heater water deficiency safety device of the kind in which high and low water pressure is applied to opposite sides of a diaphragm, movement of the diaphragm is communicated to the gas control valve by a stem 15 moulded integrally with a diaphragm plate 14 of plastics material. The plate has a boss 142 and webs 143, and pin 15 which is formed in an undivided part of the mould is slightly conical.
Patent GB-1535998-A (GB)
Title: Method of manufacturing an electron-sensitive negative resin and an application of said resin to integrated optics
IPC: G03F7/075
Filed: 1976-03-08
Abstract: 1535998 Electron sensitive polysiloxane resin THOMSON-CSF 8 March 1976 [11 March 1975] 9254/76 Heading C3T [Also in Division B2] An electron-sensitive polysiloxane resin is prepared by (1) hydrolysing phenyltrichlorosilane to phenyl-silane triol, (2) polycondensing the product from (1) in an azeotropic mixture of diphenyl and diphenyl oxide in the presence of potassium at a temperature of 250‹ to 300‹ C., then cooling and then precipitating the polyphenylsiloxanols by the addition of methanol, and (3) then fractionally separating the polyphenylsiloxanols of different molecular masses using successive filtration operations, thus obtaining batches of polymers each having a particular mean molecular mass fitting the manufacturing of a typical optical waveguide. Step (2) may additionally comprise an intermediate filtering operation of a solution of the polycondensate through a diaphragm having pore sizes of 0À2 microns. The third step may be carried out by first dissolving the polycondensate from step (2) in benzene to form a 1% wt. solution, then filtering the solution through a filter having a pore sizes of 0À025 microns which retains the aggregates, then subjecting the filtrate to successive fractionating operations using three successive diaphragms having nominal porosities defined by the retention of molecules of (1) 100,000 g., (2) 25,000 g. and then (3) 1000 g. Uses.-Optical microwaveguides capable of transmitting a light wave, e.g. a LASER beam of about 1 micron in width, which are integrated into a substrate, e.g. a silicate substrate. The waveguide may be prepared by depositing the resin on the substrate by centrifuging a solution of the resin in an atmosphere saturated with the same solvent as used for the resin, e.g. benzene, then crosslinking the resulting resin layer with electronic radiation using electronic masking.
Patent GB-237864-A (GB)
Title: Washing process for the production of a tricalcium saccharate of high purity
IPC: C13B35/04
Filed: 1925-04-07
Abstract: 237,864. Steffen, C. July 31, 1924, [Convention date]. Purifying saccharine liquids; refining sugar. - In washing tri-calcium saccharate on the filter after filtration, finely-ground readily-filterable insoluble substances such as fine sawdust, wellwashed lime sediment from the saturation process, river sand, finely-ground brown coal, and kieselguhr, are added to the washing water. Substances which act as decolourizers may be used, and the amount added may be from one to two per cent of the washing water. The substances prevent the formation of cracks and enable uniform washing to be obtained.
Patent GB-1421469-A (GB)
Title: Portable belt conveyor
IPC: B65G21/14
Filed: 1973-02-26
Abstract: 1421469 Extendable sectional belt conveyer systems for mines WEST VIRGINIA ARMATURE CO 26 Feb 1973 [28 Feb 1972] 9417/73 Heading B8A A belt conveyer E for receiving coal from a conveyer D leading from a mine coal face (A) (Fig. 1, not shown), and feeding a downstream conveyer F, comprises a series of pivotally connected sections 88 which enable the conveyer to adjust to uneven contours on the mine floor (Fig. 13). The frame side walls of the sections 88 are of box-section and have pivotal joints (Figs. 5-9, not shown) which are so designed as to provide a continuous smooth upper horizontal surface and a continuous outer side smooth vertical surface for the engagement of running wheels 137 of a bridge conveyer section (Fig. 3A). An end return-roller 86 of the conveyer belt is displaceable under belt tension against the action of hydraulic units 180 contained within the box section frame member of the end section 88. A compensating roller 184 (Figs. 2A, 10, and 11) bears on the upper surface of the return run of the conveyer belt, under the action of springs 204. The downstream end of the conveyer is supported by a post 214 about which the conveyer may be pivoted.
Patent GB-558590-A (GB)
Title: Darning device
IPC: D04B17/00
Filed: 1942-07-08
Abstract: 558,590. Darning. FAIRWEATHER, W. C. (Singer Manufacturing Co.). July 8, 1942, Nos. 9470 and 9471. [Class 112] A frame 15, Fig. 1, for holding short threads whilst being secured to a fabric by cross-stitching in a sewing- machine is formed as a U-shaped spring clamp with upper and lower members 11, 17 secured together by screws 14. An alternative frame is made of a single length of wire providing a lower member 10, 28, Fig. 2, and an upper member, the doubled wire 15, 24 of each leg embracing the single wires of the lower member.