baber/WOPTO huggingface dataset:
Patent GB-330495-A (GB)
Title: Improvements in foldable wall chests
IPC: A47B71/00
Filed: 1929-03-13
Abstract: 330,495. Morriss, F. E. March 13, 1929. Divided on 330,609, [Class 20 (i), Buildings and structures, Kinds &c. of]. Cabinets.-A folding wall chest or cabinet consists of five panels, viz., two side panels 2, a top panel 7, 8 and a bottom panel 4, all hinged to the wall and a front panel 6 hinged to the bottom panel 4. The top panel is in two parts 7, 8 connected by hinges and aligned by means of a turn button 9. The bottom panel 4 is supported on ledges 3 on the side panels 2, and the front panel is held erect by a hook-ended rod 10 which enters notches 11 in the panels 2. The panels 6, 7 have respectively a staple 13 and link 12 to enable the chest to be locked. The parts 4, 6 may be folded into a recess in the wall, and the parts 2, 7 folded over them. In the folded position, the rod 10 may be passed through the eye of the link 12 and eyelets on the side panels 2.
Patent GB-1195189-A (GB)
Title: Improvements in or relating to High-Frequency Silicon Transistors.
IPC: H01L29/73
Filed: 1969-03-19
Abstract: 1,195,189. Semi-conductor devices. SIEMENS A.G. 19 March, 1969 [20 March, 1968], No. 14318/69. Heading H1K. A method of manufacturing a planar silicon transistor comprises the steps of forming the base zone 6 of the transistor by diffusing a dopant into the surface of a silicon crystal through a window previously formed in a masking layer 2 of silicon dioxide covering the surface, the dopant being diffused in from its oxide deposited from the gas phase on to the masking layer and window, then depositing a further silicon dioxide layer 7 on to the surface from a reaction gas, then forming the emitter zone 9 by diffusing and/or alloying a dopant into the surface through a window 8 formed in the silicon dioxide layer 7, and finally contacting the base and emitter layers and the original crystal material 1 which forms the collector. The emitter forming stages are carried out at temperatures which do not cause appreciable penetration of the dopant from the base zone into the covering silicon dioxide layer. The emitter zone of the resultant transistor has a breadth of from 1 to 5Á and a depth of about 1 Á. The windows are etched in the silicon dioxide layers by fluoric acid and the last window, for the emitter contact, is obtained by etching the entire oxide covered surface of the crystal until the emitter zone is exposed. The reaction gas used to form the oxide layers are silane with an oxidant, or an ortho-silicic acid ester, such as tetraethoxysilane, with an oxidant, the oxidant in either case being oxygen or water vapour. Boron and phosphorus are employed as dopants.
Patent GB-1387645-A (GB)
Title: Vent construction
IPC: H01H9/04
Filed: 1972-03-10
Abstract: 1387645 Venting switches S & C ELECTRIC CO 10 March 1972 [7 Sept 1971] 14331/74 Heading H1N A vent, e.g. for the breather of Specification 1,387,644, comprises a tubular fitting 46 containing a screen 51 and having a bulbous rim 54 spaced from an annular flange 48 which limits the extent that a knurled section .47 of the vent can be pressed into an opening in the breather. The rim 54 ends in a plane surface 60 so forming a deep sharp-edged groove 62 so that rain water is deflected from the opening in the vent.
Patent GB-125867-A (GB)
Title: Improvements in or relating to Firelighters.
Inventor: PRITCHARD JOHN THOMAS
IPC: C10L11/04
Filed: 1918-09-04
Abstract: 125,867. Pritchard, J. T. Sept. 4, 1918. Wood fuel.-In the production of fire-lighters of the kind in which a number of sticks or wood chips enclose between them shavings, chippings, sawdust, or other inflammable material, pieces of waste cane, osiers, and the like are used instead of bamboo or wood strips usually obtained by splitting. The pieces of waste cane &c. a are arranged to enclose the shavings &c. b, the whole being bound together by the ordinary wire c.
Patent GB-233906-A (GB)
Title: Improvements in oil bunsen burners applicable to domestic heating stoves and heating purposes generally
IPC: F23D11/44
Filed: 1924-06-14
Abstract: 233,906. Simpson, W. M. June 14,1924. Atmospheric vapour burners; vaporizing-apparatus.-The vaporizer supplying the atmospheric burner head or heads 9 of a domestic heating stove comprises a hollow outer cone 1* made of brass or other non-ferrous metal and a hollow or solid inner cone 1** of suitable heatresisting material suspended by a steel rod 6 adjustably secured to a cover 5 on the outer cone 1*. When the vaporizer is heated the differential expansion between the brass cone 1* and the steel rod 6 causes the formation or enlargement of a capillary space between the cones 1*, 1**. Oil is admitted under pressure to the vaporizer through a non-return valve 18 and a union which is surrounded by a preheating trough 7. The vapour leaves the vaporizer through a pipe 4 and issues through a nipple 11 into an air induction tube 12 which is arranged outside the stove and leads into a mixing-tube 8 communicating with the burner heads. The nipple 11 may be fitted with a pricker-needle 14. The vaporizer is heated by a burner nozzle 13 fixed on the mixing-tube 8. The flame from the nozzle 13 may be directed on to the vaporizer by means of an asbestos-lined hood fixed to the cover 5 and is regulated by a valve such as an adjustable slide 19 in the mixing-tube 8. The admission of air to the tube is regulated by means of a screw-adjusted plate 17. An adjustable extension 16 on the tube 12 ensures that any vapour escaping from the gland surrounding the pricker needle is drawn into the tube 12. The rod 6 may be extended to engage with the valve 18 to prevent the passage of oil when the vaporizer is cold. The Provisional Specification states that the inner cone may be formed from asbestos pulp treated with silicate of soda and that the burner heads are fitted with metal caps pierced with saw-cuts, the flames from which play on clay mantles or pierced tubes. It also states that the mixing tube may be curved or annular, and have a circular burning surface, the vaporizer cones being arranged within the annulus.
Patent GB-119684-A (GB)
Title: An Improved Weft Grip for use in Looms for Weaving.
Inventor: CHADWICK FRANK TEASDALE
IPC: D03J3/00
Filed: 1917-10-06
Abstract: 119,684. Chadwick, F. T., and Newsome, G. Oct. 6, 1917. Weft-end holders. - The end of the weft from a fresh shuttle is passed between and gripped by two disks with bevelled edges, the upper disk a being formed integral with a spindle c screwed into the temple casting d or other part, and the lower disk b being slidably mounted on the spindle and pressed upwards by a spring e bearing at its lower end on a pin f. To keep the faces of the disks parallel, a concentric annular shoulder on the disk a enters a corresponding recess in the disk b. The pressure between the disks may be adjusted by turning the spring e to make its lower end pass below the pin f.
Patent GB-984669-A (GB)
Title: Motor vehicle rear suspension
Inventor: LEE DAVID EDWARD
IPC: B60G15/06
Filed: 1963-04-11
Abstract: 984,669. Adjusting vehicle height. FORD MOTOR CO. Ltd. Feb. 7, 1964 [April 11, 1963], No. 14493/63. Heading B7D. Each end of a beam axle 1 is connected to a combined shock absorber and self-levelling hydro -pneumatic spring unit and a longitudinal leaf spring with a short leaf 17 for resisting spring wind-up and a long leaf 11 for connection to a vehicle body. Specification 969,702 is referred to.
Patent GB-626794-A (GB)
Title: Method of bleaching ground wood
IPC: D21C9/10
Filed: 1947-06-02
Abstract: Ground wood fibres are felted into a web from an aqueous suspension of the fibres and are bleached by applying to at least one face of the web an aqueous alkaline bleaching solution consisting of a peroxide and a soluble phosphate.  The bleaching solution preferably has an initial pH of between 9.5 and 11.5.  In examples: (1) a furnish containing 60 per cent unbleached ground wood and 40 per cent unbleached sulphite pulp together with clay, size and alum is formed into a sheet on the wire of a paper machine, pressed to a consistency of 35 per cent, impregnated with a solution containing hydrogen peroxide and trisodium phosphate so as to apply 2.0 per cent of hydrogen peroxide (27.5 per cent) and 2.0 per cent of trisodium phosphate (based on the dry weight of the pulp), and then dried; (2) a pulp sheet containing 70 per cent unbleached sulphite and 30 per cent ground wood is similarly bleached by impregnating with a solution of such concentration as to apply 1 per cent hydrogen peroxide and 1 per cent trisodium phosphate.
Patent GB-626406-A (GB)
Title: Piston rings
IPC: F16J9/08
Filed: 1947-06-03
Abstract: 626,406. Piston rings. WELLWORTHY PISTON RINGS, Ltd., and HOWLETT, J. W. June 3, 1947, No. 14633. [Class 122(i)] A piston ring 17, to be fitted in a groove 13 of a piston 11, has its lower radial face 19 machined, relatively to its peripheral face, so that gas pressure acting on its other radial face 18 will tend to dish the ring slightly rendering it slightly concave towards the upper end of the piston, Fig. 2, so that at temperatures' below normal working temperatures the lower peripheral edge 23 of the piston ring will tend to engage the cylinder wall 12 with a greater pressure than the upper edge 24. When normal working temperatures are reached, due to the temperature gradient in the piston, the grooves therein tend to become slightly convex towards the upper end of the piston thereby causing the piston ring to twist such that its outer periphery becomes substantially parallel to the cylinder wall. The piston ring and groove may have tapered sides.
Patent GB-311384-A (GB)
Title: Manufacture of cotton dyestuffs
IPC: C09B56/04
Filed: 1929-05-10
Abstract: 311,384. Soc. of Chemical Industry in Basle. May 10, 1928, [Convention date]. Azo dyes; stilbene dyes.-Azo dyes are made by condensing two molecular parts of the same or different aminoazo or aminopolyazo dyestuffs with one molecular part of dinitrostilbene disulphonic acid or dinitrodibenzyl disulphonic acid or the conversion products of p-nitrotoluene-osulphonic acid. The aminoazo compounds derived from o-oxydiazo compounds may be used in the form of their complex metal compounds. The condensation products may be treated with oxidizing agents. or converted into complex metal compounds. The following examples are specified : (1) The dyestuff sulphanilic acid # a-naphthylamine is condensed with sodium dinitrostilbene disulphonate in the presence of caustic soda; the product dyes cotton brown red. The use of the aminoazo compounds metanilic acid # a-naphthylamine and 2-chloro-1-aminobenzene-5-sulphonic acid # aniline (or m-aminocresol ether) is also specified. (2) The dyestuffs 2-chloraniline- 5-sulphonic acid # aniline and sulphanilic acid # a-naphthylamine are condensed as in the first example; the product dyes cotton orange. (3) The condensation product of dinitrostilbene disulphonic acid and the dyestuff 4-chlor-2-aminophenol # J-acid dyes cotton red-brown and may be after-treated with agents yielding copper in substance or on the fibre; the coppered dyeings are grey and fast to light. (4) The copper compound of the dyestuff 4-chlor-2-aminophenol # J-acid is condensed with dinitrostilbene disulphonic acid and the product oxidized with sodium hypochlorite; the final dyestuff gives olive grey dyeings fast to light and alkali on cotton. (5) The chromium compound of the dyestuff 4-chloro- 2-aminophenol-6-sulphonic acid # J acid is condensed with dinitrostilbene disulphonic acid; the product dyes cotton olive; copper and chromium compounds may be condensed simultaneously; the dyestuff J-acid # p-phenylenediamine # salicylic acid may be similarly condensed. Specification 19807/07 is referred to.
Patent GB-1070315-A (GB)
Title: Polymeric lubricating oil additives
Inventor: FORD JOHN FREDERICK
IPC: C08F8/00
Filed: 1964-04-09
Abstract: A liquid phosphorus-containing olefin polymer is made by reacting an olefin with a phosphorus halide, the molar ratio of olefin to phosphorus halide being 100:0.1-25, in the presence of at least 1.5 moles of a Friedel-Crafts catalyst per mole of phosphorus halide so as to produce a phosphohalogenated polymer, and hydrolysing the polymer to convert halogen groups present in the polymer to oxide or hydroxyl groups, characterized in that the reaction is carried out at a temperature of less than 60 DEG  C. and that the Friedel-Crafts catalyst consists of a mixture of aluminium halide and one or more weaker Friedel-Crafts olefin polymerization catalysts, preferably titanium tetrachloride. The hydrolysed polymer may be neutralized with a basic compound.  The preferred olefin is 4-methylpentene-1. The hydrolysed product is a lubricating oil additive.
Patent GB-1035501-A (GB)
Title: Method of manufacturing permanent magnets having large coercive force
IPC: C22C19/07
Filed: 1963-04-16
Abstract: Permanent magnets of an alloy containing in percentage by weight .Co.75-90 .Al.10-25 are cast with a high initial cooling rate, or are quenched after a homogenising treatment.  They are then thermally treated, either at an appropriate temperature or by cooling at a controlled rate to produce a finely dispersed magnetic phase in a non-magnetic matrix.
Patent GB-1424308-A (GB)
Title: Fragrance materials
IPC: A61K8/00
Filed: 1974-04-03
Abstract: 1424308 Perfume compositions INTERNATIONAL FLAVORS & FRAGRANCES INC 3 April 1974 [9 April 1973] 14791/74 Heading A5B [Also in Division C2] 2, 5, 5-Trimethylacetyl cycloheptane having the formula: is used as an active ingredient in perfume compositions.
Patent GB-613819-A (GB)
Title: Improvements in or relating to quenched amplifier system
IPC: H03K3/10
Filed: 1945-06-12
Abstract: 613,819. Pulse amplifying circuits. PHILCO RADIO & TELEVISION CORPORATION. June 12, 1945, No. 14933. Convention date, Aug. 2, 1944. [Class 40 (vi)] A normally inoperative relaxation oscillator is combined with a pulse amplifier which causes the oscillator to be triggered after reception of a desired pulse, to render the amplifier inoperative for a predetermined period. In the Figure, an input valve T1 derives anode potential from the common cathode circuit of a biassed multivibrator T3, T4 which normally passes heavy current through valve T4. Negative input pulses applied to terminal 34 are fed to cathode loaded amplifier T2 and appear as positive pulses at terminal 35. During the pulse period, heavily damped circuit 22 is shock excited to produce one cycle of oscillation with a periodic time equal to twice the pulse width so that a positive wavefront reacts on the grid of valve T3 as soon as the pulse has passed through valve T2. The biassed multivibrator changes over, and valve T3 passes much less current than valve T4, producing a large drop in anode voltage for valve T1 which reacts through capacitor 14 to render valve T2 insensitive to further pulses until the multivibrator reverts to its original state.
Patent GB-911075-A (GB)
Title: Improvements relating to electric motors
Inventor: SMART BERNARD ARTHUR
IPC: H02K5/167
Filed: 1959-05-01
Abstract: 911,075. Lubricating. METAMEC Ltd. May 2, 1960 [May 1, 1959], No. 14946/59. Class 12 (3). [Also in Group XXXV] A synchronous electric motor for a clock comprises a rotor carried by a bored bush or similar carrier on a fixed spindle mounted at one end on a plate, in which the spindle is hollow and means are provided for admitting oil to the interior of the spindle through its mounted end and from the other side of the plate. Hollow spindle 12 is mounted on plate 10 by bush 11. Rotor R is carried by bored bush 13 over which fits an extension 14, leaving a cavity C for oil introduced into the lower end of spindle 12, which terminates short of the extension. Pinion P transmits the drive. In a second embodiment (Fig. 2, not shown), the extension is formed as a solid metal part having a central bore through which passes the spindle plugged at its upper end and bearing on the extension or on the lower end on a pinion mounted on the extension. The spindle is then provided with a lateral hole to allow oil to pass into the cavity in the bush. In a third embodiment (Fig. 3, not shown), the extension is formed as a worm for transmitting the drive. A ball may replace the plug at the top end of the spindle in the latter embodiments .
Patent GB-1190549-A (GB)
Title: Improvements in Electrical Waveguide Arrangements
Inventor: CRAVEN GEORGE FREDERICK
IPC: H01P1/37
Filed: 1969-03-24
Abstract: 1,190,549. Isolators and filters. STANDARD TELEPHONES & CABLES Ltd. 24 March, 1969, No. 15206/69. Heading H1W. A dual-purpose waveguide device comprises a combination of a field-displacement ferrite isolator and a band-pass filter. A section 3 of rectangular waveguide is provided with lateral strips 4, 5 of ferrite, one of which (4) carries a resistive coating 6, whereby, on application of a transverse magnetic field H dc , the section behaves as a conventional field-displacement isolator over a certain band of frequencies. At frequencies below this band, the section 3 is effectively dimensioned beyond cut-off by virtue of the effect of the polarized ferrite strips 4, 5. Energy incident from section 1 propagates as an evanescent wave in section 3 and each length I of the section presents an inductive reactance to the wave. Each length l is associated with an E-plane stub 8 dimensioned to provide a series capacitative reactance which is the conjugate of the reactance of the corresponding length l, whereby the whole section 3 behaves as a three-section band-pass filter within a band of frequencies below that within which it behaves as an isolator. In the latter band, the stubs 8 approximate in length to #g/2 and present a short circuit to the waveguide. In a modification (Fig. 6, not shown), having two sections only, the stubs (two in number) lie parallel, instead of at right-angles, to the waveguide section 3.
Patent GB-703142-A (GB)
Title: Process for the continuous regeneration of waste pickling liquors
IPC: C23G1/36
Filed: 1952-06-18
Abstract: Ferrous salts dissolved in spent pickling liquor or suitably crystallized therefrom by cooling are converted by treatment with gaseous hydrogen chloride (advantageously under pressure) to crystalline ferrous chloride and the latter decomposed by steam at, e.g. 400-500 DEG C. or preferably by heating the hydrated crystals at 400-600 DEG C. to give iron oxide and hydrogen chloride which is recycled.  Air may be admitted during the decomposition if a high valency oxide is required.  The hydrogen chloride may be dried with concentrated sulphuric acid, the latter reconcentrated, and the separated water reused to effect decomposition of ferrous chloride, preferably after heat exchange with the out-going hydrochloric acid.
Patent GB-137011-A (GB)
Title: Improvements in or relating to Tennis or like Rackets.
Inventor: ADDIS FREDERICK HENRY
IPC: A63B51/12
Filed: 1919-06-18
Abstract: 137,011. Addis, F. H. June 18, 1919. Rackets; handles. - A tennis or like racket has a T-headed screw D fitted into the frame and connected to the principal longitudinal strings (all of the strings being otherwise secured in the ordinary manner), and a nut E situated in a slot in the frame is used to drawn down the bolt. The pull on the strings tends to shorten and at the same time to widen the hoop, thus tightening up both the longitudinal and cross strings. A recess in the handle is used to store a rod F for turning the nut E.
Patent GB-1429306-A (GB)
Title: Control systems for fuel systems for engines
IPC: F02D41/38
Filed: 1972-04-04
Abstract: 1429306 Automatic control of speed CAV Ltd 21 March 1973 [4 April 1972] 15354/72 Heading G3R In a system for controlling the supply of fuel to an I.C. engine similar to those described in Specifications 1416861 and 1416862, a transistor is connected to control the feedback of the controlling operational amplifier whereby the level of the input signal to a power amplifier controlling the fuel supply pump is limited to a safe level. Additionally a further arrangement is provided to switch off the power amplifier if this level is  exceeded. The circuit shows operational amplifiers 18, 19 which form the comparators for the control system and whose outputs pass through diodes 24, 26, acting as a discriminator, to power amplifier 25 which supplies the actuator for the fuel pump. Transistors 55, 56 are connected across the amplifiers 18, 19 respectively and conduct when the amplifier output exceeds a safe voltage level to provide a feedback path for the respective amplifier and thus limit its output voltage level. The further transistor 62 conducts if the voltage level exceeds the limit value when the transistors 55, 56 are conducting and operates the safety network 66 to prevent damage to amplifier 25.
Patent GB-1344698-A (GB)
Title: Hermetically sealed electric motors
IPC: H02K9/20
Filed: 1971-05-14
Abstract: 1344698 Liquid cooled electric motors LOUIS ALLIS CO 14 May 1971 [18 May 1970 18 Jan 1971] 15404/71 Heading H2A [Also in Division F4] In a hermetically sealed electric motor 1, e.g. a refrigeration plant compressor motor, comprising a hermetically sealed casing 15 housing in an annular chamber 38 a stator assembly 30 and a rotor assembly 20 with a rotor/stator gap 60 therebetween; and an inlet conduit 46 for feeding liquid coolant, e.g. refrigerant to the casing and an outlet conduit 47 for withdrawing coolant after cooling the assemblies, coolant is caused to flow from a cavity 48 defined by a baffle 49 into one end of the rotor/stator gap. and then unidirectionally through the length of the gap by the coaction of the baffle and an impeller which is disposed in the cavity 48, at one end of and rotatable with the rotor assembly. The impeller may be formed by an end ring above the rotor squirrel cage winding or, as shown, by vanes 29   attached thereto. The stator assembly is supported onaxial bars 43 in the chamber 38 and is immersed in the liquid up to a level (59) Fig. 1, the gap liquid being fed from the chamber to the cavity 48 by a tube 50 and the stator assembly cooling liquid boiling off during heat transfer. At the-other end of the rotor are coolant distributing vanes 29a which it is stated have little pumping effect. Vaporized rotor assembly coolant exits either through pipes 55, 56, or passages 67, 68 to the chamber 38, to be recirculated.
Patent GB-515107-A (GB)
Title: Improvements in or relating to a supercharged internal combustion engine in which two pistons are acted on by the same impulse
IPC: F02B73/00
Filed: 1938-05-24
Abstract: 515,107. Two- and four-stroke cycle engines; valves. WILLCOX, F. A. May 24, 1938, No. 15409. [Classes 7 (ii) and 7 (vi)] Parallel or aligned cylinders with a common combustion chamber accommodate pistons connected to crank-shafts geared together in a 2 : 1 ratio. The slower-moving piston is of two diameters, the portion of larger diameter forming a pump from which compressed mixture is transferred to the combustion chamber by way of a transfer passage s. The pump space has a swept volume exceeding that of the working cylinders. Electromagnetically actuated valves are placed in the inlet d and the transfer passage s and are controlled by an adjustable rotary switch on the half-speed shaft.