baber/WOPTO huggingface dataset:
Patent GB-1396597-A (GB)
Title: Adsorption of fluorine and fluorine compounds on alumina
IPC: C25C3/22
Filed: 1972-05-09
Abstract: 1396597 Aluminium fluoride AIR INDUSTRIE 9 May 1972 [28 May 1971] 21642/72 Heading C1A [Also in Division B1] A stream of fluorine or a fluorine compound flows upwards through the convergent-divergent bottom of column 2 and is reacted with powdered alumina fed via spout 3. The top of the column has a separator 5 comprising a filter cloth for the finer particles and where the larger particles settle by decantation. The alumina which is partially converted to aluminium fluoride is collected in hoppers 5a and is recycled to the column until a sufficient degree of fluorination is achieved. The speed of gas and the feed of alumina are controlled so as to maintain the solids above a predetermined threshold which is monitored by the photoelectric device 17.
Patent GB-1194554-A (GB)
Title: Lawnmowers
Inventor: MARTIN DERICK JOHN
IPC: A01D34/42
Filed: 1967-05-11
Abstract: 1,194,554. Lawn mowers. QUALCAST Ltd. 11 May, 1967, No. 21968/67. Heading A1F. The frame of a lawn mower is formed by two longitudinally extending channel section members 11, (12) arranged one at each side of the mower with vertical webs and outwardly directed flanges, and being connected by a spindle 16 which supports a drive roller 17, a spindle 29 of the cutting cylinder 22 and by further transverse members 18, 19, 21. The roller 17 drives the cutting cylinder by chain and sprocket drive arranged within the channel section of girder 11, a cover plate being provided to enclose the drive and extending up beyond the channel section to enclose the side of roller 17 and the cutting cylinder. A height adjusting roller 31 is supported on a pair of lever arms 33, (34) which are pivotable about the axis of the cutting cylinder and extend rearwardly therefrom, the rearmost ends of the lever arms being connected by a rod (42) which can be raised and lowered in slots 41 by means of a threaded adjustment screw. An adjustable ledger blade 23 co-operates with the cutting cylinder. The mower may be power driven.
Patent GB-592309-A (GB)
Title: Hasps for locks
IPC: E05B65/50
Filed: 1944-11-08
Abstract: 592,309. Hasp fastenings. SPEGELSTEIN, E. Nov. 8, 1944, No. 21982. [Class 44] A hasp member for locks on suit cases and the like has an upper part 30 with a flange 38, in the bottom part 39, of which is a slot through which passes an extension 42 on a lower hasp-carrying part 32 having a pressed strengthening portion 34. A spring 36 tending to tilt the lower part 32 to release position passes under the extension 42 and bears against the inside of the upper part 30 ; it is held by having a lug 37 on the extension 42 bent over it.
Patent GB-1455986-A (GB)
Title: Vegetable dehydration process and product
IPC: A23B7/04
Filed: 1975-05-21
Abstract: 1455986 Treating carrots GENERAL FOODS CORP 21 May 1975 21983/75 Heading A2D A process for stabilizing the colour in dehydrated carrots comprises peeling carrots, subdividing into sliced and diced forms, blanching and partially cooking, infusing an aqueous solution of ascorbic or erythorbic acid or a salt thereof into the pieces, freezing, and freeze-drying the frozen pieces to a stable moisture content. The acid or salt thereof may be sprayed on to the carrot pieces. The freezing conditions are preferably such as to result in the formation of large non-amorphous ice crystals. The stable moisture content is suitably 2-3% by weight.
Patent GB-874630-A (GB)
Title: Improved process for the treatment of animal fibres to reduce their tendency to feltand shrink
IPC: D06M11/30
Filed: 1959-06-26
Abstract: Animal fibres, e.g. wool, are treated with an aqueous liquor containing sodium chlorite and sodium hypochlorite to reduce their tendency to felt and shrink.  Prior to treatment the animal fibres, which may be in the form of hanks, packages, yarns incorporating animal fibres, fabrics and garments, may be scoured or thoroughly wet out.  The animal fibres are preferably immersed in an aqueous bath, the pH of which is adjusted to 4-8 by the addition of formic acid, before the addition thereto of the sodium chlorite and sodium hypochlorite in that order.  A solution of a reducing compound, e.g. sodium bisulphite or sodium hydrosulphite, may be added later to the bath to remove the yellowishbrown colouration produced and to neutralize the residual chlorine. During the treatment the temperature of the bath is preferably raised to 100 DEG -120 DEG F. and the bath and fibres are finally separated, the fibres being then rinsed thoroughly in cold water and dyed.  In an example the treatment of all-wool half hose is described.
Patent GB-1255749-A (GB)
Title: Semiconductor devices
Inventor: CARTER VICTOR JOHN
IPC: H01L21/52
Filed: 1969-04-30
Abstract: 1,255,749. Semi-conductor devices. WESTINGHOUSE BRAKE ENGLISH ELECTRIC SEMI-CONDUCTORS Ltd. 24 April, 1970 [30 April, 1969], No. 22050/69. Heading HlK. A semi-conductor device wafer is in electrical contact with but not mechanically secured to two diaphragms forming opposite ends of a housing (Fig. 1). One diaphragm is hermetically sealed by its periphery to a flanged member sealed to one face of insulating slab 9 while the other is directly sealed to the other face of the slab. The slab extends laterally beyond the diaphragm peripheries and in the arrangement shown its extension forms part of an identical housing for a further semi-conductor device 5. The lower diaphragm has an extension consisting of an annulus 13, to which the flanged member is attached, and an inwardly extending tongue 11. This tongue is pressed into contact with one zone of the device wafer via diaphragm 17. In the illustrated device a further contact to a central zone of the wafer consists of a spring 21 extending through insulating ring 17 to abut closure member 20. Device pairs constituting reverse-parallel connected controlled diodes can be assembled with others in a stock clamped together by a Belleville wafer (Fig. 6, not shown).
Patent GB-230371-A (GB)
Title: Improvements in bobbin winding machines
IPC: B65H63/00
Filed: 1924-09-18
Abstract: 230,371. Joyce, J. D. Sept. 18, 1924. Spindle-driving apparatus; stop-apparatus, non-automatic. - The spindle - driving disc C of vertical spindle winding-frames is raised from its driving- wheel D by means of a lever E operated by a cam G, rotatably mounted on the spindle and operated by a handle g<1>. The clutch c which connects the disc to the spindle is such that it remains in gear when the disc is raised, and the spindle is prevented from rising by means of collars h, h<1>.
Patent GB-1197708-A (GB)
Title: Shopping Trolleys.
Inventor: ELLIOTT VIRGLE MEZNO
IPC: B62B3/18
Filed: 1969-04-30
Abstract: 1,197,708. Shopping trolleys. V. M. ELLIOTT. 30 April, 1969 [9 July, 1968], No. 22076/69. Heading B7B. A supplementary rack for use on a shopping trolley comprises a storage frame with inverted L-shaped guides 43 to accommodate rods 58 forming part of the base of the rack, the forward part of the base having feet 86 to engage the upper edge of the main basket 32. The side edges of the base are provided with side panels 70 hinged thereto and held in their upright positions by the pivoted front wall. When the walls are folded down on to the base the rack may be pivoted upwardly and rearwardly so as to be movable downwardly in the guides 43 to a storage position parallel with the storage frame.
Patent GB-1193775-A (GB)
Title: Improvement in and relating to Magnetic Memory Elements
IPC: H01F10/00
Filed: 1968-05-09
Abstract: 1,193,775. Magnetic storage devices. AMPEX CORP. 9 May, 1968 [22 May, 1967], No. 22104/68. Heading H3B. [Also in Division C7] The prevent creep in a magnetic film memory element which comprises two spaced anisotropic thin films 14, 18 supported by a substrate 12, the upper magnetic film 18 is deposited on an intermediate film of non-magnetic material the grain size of which is equal to or less than the width of a Neel domain wall. As shown in Fig. 1, a memory element comprises a glass, polyester or metal substrate 12 having a conductive layer 15 for the electrodeposition of a thin magnetic film 14 if the substrate is non- conductive. The intermediate film 16 of required grain size is deposited on to the magnetic film 14 and the second thin magnetic film 18 is then formed by electrodeposition. In a modification, Fig. 3 (not shown) the intermediate non-magnetic film comprises a layer (22) of a fine grain non-magnetic material and a layer (24) of non-magnetic material having the required minimum grain size which may be nickelphosphorus. In a further modification, Fig. 4, the substrate has a gold layer 26, and each thin magnetic film 14, 18 is deposited on a respective intermediate layer of nickel-phosphorus 16, 28. An array of memory elements may be formed by photo-etching a sandwich structure so as to form individual rectangular elements, the array being then provided with co-ordinate drive lines; Fig. 5 (not shown). Examples of compositions suitable for the electroless deposition of a nickel-phosphorus intermediate film are given (see Division C7). Other intermediate film materials are stated to be chromium, rhodium or non-magnetic nickel-chromium.
Patent GB-749643-A (GB)
Title: Improvements in or relating to adjustable supports
Inventor: JOHNSON ALBERT LEONARD
IPC: F16L3/00
Filed: 1953-08-12
Abstract: 749,643. Adjustable pipe-supporting brackets. BRYSON BRACKETS, Ltd. Aug. 12, 1954 [Aug. 12, 1953], No. 22271/53. Class 52(5). An adjustable pipe support comprises a base 1 secured to a supporting surface and bored to receive slidably a shank 5 of a two-part, pipe-engaging annulus 6 maintained in adjusted position by a locking member extending into the bore to engage the shank. The shank may be serrated or roughened at 8 to engage a grub screw 7.
Patent GB-1308652-A (GB)
Title: Process for the production of synthetic polyurethane or polyamide plastics
IPC: C08G18/72
Filed: 1970-05-08
Abstract: 1308652 Polyurethanes; polyamides BAYER AG 8 May 1970 [13 May 1969] 22319/70 Heading C3R  Polyurethanes or polyamides are prepared by reacting a polyhydroxyl and/or polycarboxyl compound with a polyisocyanate which is a 1 to 85% by weight solution in a monomeric polyisocyanate of a polyisocyanate containing biuret groups of the formula wherein R is a substituted or unsubstituted aromatic, araliphatic, cycloaliphatic or aliphatic radical and X is a hydrogen atom or the grouping wherein n is an integer from 1 to 5, the proportion of biuret-polyisocyanates containing more than 3 isocyanate groups, based on the total quantity of biuret-polyisocyanates being at least 20% by weight, the solution containing 0À03 to 5% by weight of chemically combined emulsifiers (i.e. chemically combined with the isocyanate). The reaction mixture most suitably contains a blowing agent to produce a polyurethane foam. In a typical example a biuret-polyisocyanate solution in monomeric polyisocyanate is prepared by reacting 1-methyl-benzene-2,4-diisocyanate with a castor oil polyglycol ether emulsifier followed by dropwise addition of water and heating to 165‹ C. This product is reacted with a mixture of two branched polyesters, a catalyst derived from 2 mols. of diethyl ethanolamine and 1 mol. of adipic acid and an aqueous solution of the sodium salt of castor oil sulphate to form a rigid foam.
Patent GB-268219-A (GB)
Title: Improvements in or relating to method of preserving latex and product obtained thereby
IPC: C08K3/32
Filed: 1926-09-10
Abstract: 268,219. General Rubber Co., (Assignees of Jury, A. E., and Smith, O. H.). June 8, 1926, [Convention date]. Latex, treating.-Latex is preserved by adding to it an organic antiseptic and an alkaline phosphate. The preferred antiseptic is formaldehyde, but other substances such as phenol, cresol, resorcinol, or hexyl resorcinal may be employed, and the phosphate is preferably trisodium phosphate. The quantity of antiseptic added should be sufficient for bactericidal purposes, and the amount of phosphate sufficient to reduce the hydrogen ion concentration to below 1 x 10<-7>. For ordinary shipping the maximum is 0.5 per cent of formaldehyde, and 1.5 per cent of sodium phosphate.
Patent GB-1204239-A (GB)
Title: Gas and liquid fuel burning heater
Inventor: PHILLIP JOHN ALLEN
IPC: F24C1/06
Filed: 1968-05-10
Abstract: 1,204,239. Oil- or gas-fired radiator stoves; burners. J. A. PHILLIP. 10 May, 1968 [11 May, 1967], No. 22376/68. Headings F4T and F4W. In a radiator stove having a housing, inner walls spaced from the side walls 20, 22 of the housing and a horizontal partition 42 dividing it into upper and lower compartments 46, 44, a burner or burners 56 is mounted on rotatable fuel tank 52 in the lower compartment, and heated gas passageways lead the combustion gases to the upper compartment. The heated gas passageways include sleeves 62, 66 projecting through the inner walls, and shields 60 connecting the lower sleeves 62 with the burner chimneys 58. Conduits 64 enclose the outer ends of the upper and lower sleeves at either side of the stove. Additional gas burners are mounted on the fuel tank 52 spaced 90 degrees from the oil burners 56 so that by rotating the tank 52 the gas burners may be brought into position to deliver hot gases through chimneys 58, shields 60, sleeves 62, 66 and conduits 64 to the upper chamber 46. The draught in the stove is regulated by hit-and-miss dampers 29, and the upper ends of the inner walls are shaped to give a tortuous gas path to the outlets 25. Cold air entering the housing bottom joins the combustion products within the shields 60 to increase the volume of hot gas.
Patent GB-1240335-A (GB)
Title: Improvements in or relating to frequency-selective resistance-reactance networks
Inventor: BRONZITE MICHAEL
IPC: H03H11/12
Filed: 1968-05-10
Abstract: 1,240,335. Active filters; transistor oscillators and amplifiers. ADVANCE ELECTRONICS Ltd. 9 May, 1969 [10 May, 1968], No. 22379/68. Headings H3T and H3U. A frequency selective network comprises a two section resistance-reactance ladder network C1R1, C2R2, Fig. 3, with the outputs from the two sections 2, 3 fed to a combining circuit 7. Buffer amplifiers 19, 20 may be included between the networks and the combining circuit and a further buffer (21, Fig. 5, not shown) may be included between the two C.R. networks. The resistances and reactances may be interchanged, Fig. 4 (not shown). The network is basically bandpass, but may be modified by the provision of various feedback paths. As shown in Fig. 3, a resistive network 12, 17, 18 and a switch 16 are added. With the switch in position c the basic bandpass response is obtained, in position b an allpass response is obtained, and in position a bandstop is obtained. In order to obtain a high pass or low pass response additional feedback paths are provided from amplifiers 19, 20 via a network 30, Fig. 9, and are combined with the input signal 26 in a further combining stage 28. Positive feedback may be added to improve the Q factor, Fig. 6 (not shown). The network may be used in a phase shift oscillator by connecting the terminal 8 of Fig. 3 back to terminal 1 with the switch in the "allpass " position, Fig. 7 (not shown). The various amplifiers in such an oscillator may be realized by transistor circuits, Fig. 10 (not shown). In all the circuits, the C.R. networks may be replaced by LR ones.
Patent GB-642502-A (GB)
Title: Cutters or shears for use with a lever and rack pit prop puller
IPC: E21D15/60
Filed: 1948-08-26
Abstract: 642,502. Pit prop-removing appliances. MILES S. T. Aug. 26, 1948, No. 22463. [Class 78 (iii)] [Also in Group XXIII] A device for facilitating removal of pit props with a Sylvester jack comprises a pair of cutting blades 1 pivoted to one another at 3 and connected to the jack by linked chains 4, 5 and 8, the arrangement being such that the blades cut into the prop and break it.
Patent GB-1334169-A (GB)
Title: Ground fault detectors
IPC: H02H3/347
Filed: 1971-04-19
Abstract: 1334169 Protective systems RUCKER CO 19 April 1971 [10 March 1970 20 May 1970] 22490/71 Heading H2K An earth fault protective arrangement comprises a core-balance transformer 11, magnetic flux-storage means 26 coupled to the transformer and means for periodically delivering a readout signal to the flux-storage means 26 to provide an output signal in the event of a stored flux signal. In the arrangement shown, the transformer secondary winding 24 is connected to windings 31 on inductor cores 26. A blocking oscillator 36 is connected to the windings 31 to provide pulses to read out the stored signals in the cores 26 and the signals read out are coupled back to the transformer 11 through the secondary winding 23 to induce signals in a tertiary winding 46. The output from the winding 46 is amplified in an operational amplifier 47 which receives its power supply from the oscillator 36 and has an output transformer 58a, 58b coupling it to an oscillator 63. The output from the oscillator charges a capacitor C68, which when sufficiently charged causes a unilateral switch Q73 to turn on, firing a silicon controlled rectifier SCR78 to energize a circuit-breaker or relay coil 17. Various modifications are described, Fig. 10 (not shown), illustrating the use of a separate coupling transformer between the transformer 11 and a single inductor 26, and a pulse generator connected across the main A.C. circuit to provide readout pulses timed relative to the cycle of the fault current. Figs. 12, 13 (not shown) illustrate arrangements which merely indicate the existence of an earth fault and use a simple pulse generator with a capacitor and a diac, the output signal of the arrangement firing a triac connected in series with a lamp.
Patent GB-1185077-A (GB)
Title: Forward and Reverse Drive Machinery
Inventor: SINCLAIR HAROLD
IPC: B63H23/00
Filed: 1967-05-15
Abstract: 1,185,077. Reverse gear control. SYNCHRO-DRIVES Ltd. 2 May, 1968 [15 May, 1967], No. 22494/67. Heading F2D. In a marine reverse gear wherein an input shaft 11 selectively drives an output pinion 6a through fluid couplings 1, 1<SP>1</SP> in forward and reverse gear trains 10, 9, 6 and 10, 10a, 9<SP>1</SP>, 6<SP>1</SP> a control which selectively fills and empties the fluid couplings has a zero drive position in which both couplings 1, 1<SP>1</SP> are filled and the torques from the couplings oppose each other and no drive is obtained. The lower end of a control lever 22 movable in a gate, Fig. 9A, carries cams 24, 25 actuating values 26, 27. In the zero drive position shown the valves 26, 27 supply compressed air through lines 31, 31<SP>1</SP> to servo's 34, 34<SP>1</SP> which actuate valves 32, 321 to supply liquid to both the couplings 1, 1<SP>1</SP>. The liquid flows continuously through the couplings and is exhausted through relief valves 19, 19<SP>1</SP>. When the lever 22 is moved in a slot 37 of the gate to a forward (or reverse) position 22F (or 22R) the cam 25 (or 24) no longer actuates the valve 27 (or 26) which vents the line 31<SP>1</SP> (or 31) and servo 34<SP>1</SP> (or 34) to change-over the valve 32<SP>1</SP> (or 32) and empty the reverse (or forward) coupling 1<SP>1</SP> (or 1) so that drive is obtained through the other coupling 1 (or 1<SP>1</SP>). During a shift from forward to reverse ratios or vice versa detents 39, 40 prevent movement of the lever 22 into the reverse ratio position until both couplings are full. The detents are moved by springs into the path of the lever 22 and are retracted therefrom by servo's 43, 44 actuated by pressure air supplied through valves 46, 46<SP>1</SP> when the respective couplings 1, 1<SP>1</SP> are full. The pressure in the couplings 1, 1<SP>1</SP> acts through diaphragms 49, 49<SP>1</SP> on the valves 46, 46<SP>1</SP>. Movement of the lever 22 along a slot 38 to a neutral position moves both cams 24, 25 off the valves 26, 27 whereupon both couplings 1, 1<SP>1</SP> are emptied and the driving turbine may be run for testing or driving auxiliary equipment. For slow forward or reverse drive the lever 22 is moved to a position 22SF or 22SR in a slot 61 wherein it actuates a valve 621 or 62 to supply pressure air to a servo 64<SP>1</SP> or 64 which opens the relief valve 19<SP>1</SP> or 19 to reduce the pressure in the reverse or forward coupling 1<SP>1</SP> or and thus provide a slow forward or reverse drum with both couplings full. A mechanical forward drive is provided by engaging a positive clutch 21 which bridges the forward fluid coupling 1. The turbine shaft 11b drives the input shaft 11 through a synchronous self-shifting clutch 11a and reverse rotation of the shaft 11 during overrun is prevented by a one-way brake 12. The output pinion 6a may be driven from two turbines through two identical forward gear trains and a single reverse gear train.
Patent GB-378640-A (GB)
Title: Scraping out or skimming device for centrifuges
IPC: B04B11/08
Filed: 1931-08-10
Abstract: 378,640. Centrifugal machines &c. TER MEER, G., 3, Seestrasse, Munich, Germany. Aug. 10, 1931, No. 22596. [Class 23.] A scraping member for a centrifuge is adapted to be moved up and down on guides at opposite sides of the centrifuge and at rightangles to the centrifuge axis, by a pressure medium. The scraper which may be in the form of a number of interchangeable platelike sections adjustably mounted on a removable holder is supported on a carrier E adapted to be moved on guide-bars D radial to the centrifuge B by a piston-rod G operated by a pressure medium on a piston H in a cylinder J.
Patent GB-1515348-A (GB)
Title: Multistage axial-flow compressors
IPC: F04D29/52
Filed: 1975-05-23
Abstract: 1515348 Axial-flow compressors BROWN BOVERI-SULZER TURBOMACHINERY Ltd 23 May 1975 [17 June 1974] 22806/75 Heading F1C A multi-stage axial-flow compressor comprises two or more successive compression sections A, B, C each comprising a stator blade carrier 8, 20, 35 and having an inlet to which an inlet connection 4, 30, 44 leads and to which (except in the case of the upstream section A), the delivery of the preceding section leads; each stator blade carrier 20, 35 other than the upstream one 8 being connected to the casing 3 by a generally radially extending partition 3a, 3b which on its upstream side bounds the respective inlet connection 30, 44, and each such stator blade carrier 20, 35 extending from its partition 3a, 3b to form with the immediately upstream stator blade carrier 8, 20 an annular  intake passage 24, 39. Adjustable inlet stator blades 11, 25, 40 and it may be, 28, 43 are provided. Each blade 25, 40 may change smoothly in profile along its length or may be divided into two zones 25a, 25b or 40a, 40b of differing profile as appropriate for the two flows handled by the blade.