baber/WOPTO huggingface dataset:
Patent GB-576628-A (GB)
Title: Improvements in or relating to selector valves
IPC: F16K11/16
Filed: 1943-07-06
Abstract: 576,628. Valves. CURTIS PUMP CO. July 6, 1943, No. 10956. Convention date, March 6, 1943. [Class 135] A selector valve comprising inlet and outlet ports with a pivotal valve closure to control the fluid flow is provided with two relatively displaced cams, the first of which acts on the closure member to open it and the second of which acts on the closure member to hold it seated after the first cam has moved away. In an embodiment, the valve comprises a casing 11 provided with a number of inlets 15, each of which may communicate with a separate fuel tank, and an outlet 14 leading to an engine, and each inlet can be closed by a separate valve head 30 carried by a lever 26 pivoted at 27 to ears depending from the top of the casing. The lever 26 is formed from a channel-shaped metal strip of which the upper end is acted on by a spring 25 pressing the valve head into obturating position. A rotatable spindle 19 carries cams 35, 37 so formed that, while cam 35 presses on the upper end of one or more levers 26 to raise the valve heads and to open the corresponding inlets, cam 37 presses on the lower ends of all the other levers to ensure that the corresponding inlets are maintained closed. The cams are held against rotation on the shaft by pins 36, 38. The lower end of the spindle rotates in a cup 18 supported on a spider 17 carried by the casing. Leakage past the upper end of the spindle is prevented by packing 21 held in by a spring 22 which is compressed by a U-shaped wire 23 passing through holes in the walls of an upstanding part of the casing. The levers 26 are stamped with a boss at the upper end which seats in a recess in the cam 35 to provide definite settings for the spindle. A valve head comprises a disc of plastic material with ears 30b carrying a cotter-pin which passes through slots 28 in the flanges of the lever 26 to pivot the valve head with a slight play. Leaf springs 34 press the valve head away from the lever 26, and the obturating face of the valve head carries a synthetic rubber-impregnated fabric washer 31 held on by a metal spring washer 32 and cotterpin 33. In a modification, a dummy lever is provided in place of one inlet so that the valve has an " off " positive in which all the inlets will be closed.
Patent GB-165581-A (GB)
Title: Improvements in the manufacture of coal gas
IPC: C10B27/00
Filed: 1920-04-20
Abstract: 165,581. Meade, A. April 20, 1920. Dip-pipes and hydraulic mains; purifying processes.-The liquid in a hydraulic main a flows by gravity through a pipe a<1> to a pressure box b, the depth of liquid in which is adjusted by a handwheel b<1>, and the level of the liquid in the hydraulic main is maintained by increasing the pressure in the pressure box b by introducing gas through a pipe d. The hydraulic main a and connecting-pipe a<1> form one limb of a U-tube, the other limb, which is lower, being formed by a partition of the pressure box, thus, to maintain the level in the higher limb, gaseous pressure is applied to the lower. The pressure gas is passed through a controller n which maintains the gas at constant pressure. Tar and liquor pass from the box b to a separator h, from which a portion of the hot liquor is pumped to a tank j, and is returned by a pipe m to the hydraulic main to assist in purification of the gas.
Patent GB-1184176-A (GB)
Title: Rotary Electric Pump
IPC: H02K5/128
Filed: 1967-03-08
Abstract: 1,184,176. Pump motors. UNELEC. 8 March, 1967 [10 March, 1966], No. 11013/67. Heading H2A. [Also in Division F2] A fibreglass pump impeller and planar-type motor rotor 5, 6 are mounted together on a single bearing bush 8 by means of an interposed corrugated metal band 81. The bush 8 is made of a material, e.g. graphite or ceramic, which is capable of being lubricated by the pumped liquid. The motor stator 1, 2 is located by spacers 3 of insulating and sound absorbing material and an air-gap plate 4, while the squirrel-cage rotor is vacuum impregnated and protected by a covering 7 of copper alloy or brass. The rotor is axially located on fixed bearing 9 by spacers 11, ], 12.
Patent GB-535886-A (GB)
Title: Improvements in cyclone dust separators
IPC: B04C5/04
Filed: 1940-06-28
Abstract: 535,886. Centrifugal dust separators. BUELL COMBUSTION CO., Ltd. (Tongeren, H. van.). June 28, 1940. No. 11031. [Class 23] The inner wall 6 of the tangential inlet 7 of a cyclone dust separator terminates at the point a, short of the point where it would meet the cylindrical wall 8 of the separator, and it is joined to the cylindrical part by a radial plate 9. The length of this plate 9 is at least a tenth and not more than two fifths of the radius of the cylindrical part. The plate may be curved to round off the comers at its ends a, b.
Patent GB-435369-A (GB)
Title: Improvements relating to the mounting of ring plates in machines for spinning and doubling cotton and other fibrous substances
IPC: D01H7/64
Filed: 1935-04-10
Abstract: 435,369. Ring spinning &c. machines. WHITELEY, W., Woodside, Elland, Yorkshire. April 10, 1935, No. 11072. [Class 120 (ii)] Resilient means, such as spring-pressed balls E or flat springs, are interposed between the ends of adjacent ring rails B and between the rails and the poker brackets A.
Patent GB-656516-A (GB)
Title: Improvements in and relating to colour television systems and apparatus therefor
IPC: H04N11/00
Filed: 1947-04-25
Abstract: 656,516. Colour filters. EDWARDS, B. J., JOHNSTONE, D. M., and PYE, Ltd. April 25, 1947, No. 11092. [Class 97 (i)] [Also in Groups XL (a) and XL (b)] A colour interference filter comprises an array of iridescent particles suspended in a suitable medium and is controlled electrically to vary the orientation of the particles relative to the incident light so that the colour of the emergent beam is varied. As shown in Fig. 3 the filter 16 is mounted on the end wall of a cathode-ray tube 10 used in a colour television transmitting apparatus (see Group XL (b)), and the particles 31 are suspended in a film 32 of elastic material enclosed within transparent electrodes 18, 19. A glass plate 33 separates the electrode 19 from a photocathode 11 and a collimating screen 34 is interposed between the filter 16 and the wall of the tube. The filter of the television receiving apparatus is generally similar and is described in connection with Fig. 4 (not shown). The Specification refers to a colour interference filter formed by a quartz plate whose thickness is varied electrically by electrostriction or magnetstriction to effect desired colour selection.
Patent GB-781618-A (GB)
Title: Improvements in bearings
IPC: F16N23/00
Filed: 1955-04-18
Abstract: 781,618. Bearings. McCALLUM, N. C. April 18, 1955 [May 31, 1954 Sept. 20, 1954 ; Jan. 7, 1955], No. 11116/55. Class 12 (1). A bearing, especially suitable for use in agricultural implements such as stump-jump disc ploughs, comprises a housing 10, Fig. 2, with end faces engaged by end plates 17, 18, antifriction elements 11, 12 disposed within the housing about a rotatable shaft 24, sealing means 16 adapted to retain lubricants within the housing 10, and a passage 30 leading from inside to outside the housing and provided with a variable-pressure control valve 29 which prevents the pressure of lubricant within the housing from exceeding a predetermined value. The element 11 shown as a roller bearing is held in place between a collar 38 and a helical spring 13 which bears against a shoulder 14 on the housing 10. On the other side of the shoulder 14 a lead-bronze washer 15 is interposed between the shoulder and roller bearing 12. The sealing means 16 may be flat or cupped washers of leather or rubber compound. The roller bearings 11, 12 may each be replaced by a ball bearing 39, Fig. 3, with the races inclined as shown at 44.
Patent GB-288983-A (GB)
Title: Process for the manufacture of azo dyestuffs capable of after treatment with metallic salts
IPC: C09B31/06
Filed: 1928-04-16
Abstract: 288,983. I. G. rarbenindustrie Akt.- Ges. April 16, 1927, [Convention, date]. Samples furnished. Azo dyes adapted for after-treatment with metallic salts, e.g. salts of copper or chromium, are produced in substance or on the fibre by coupling with an arylide of 2 : 3-oxynaphthoic acid a diazotized aminoazo compound obtained by coupling an o-oxydiazo compound or a substitution product thereof with a substituted or unsubstituted amino, none of the components containing sulphonic or carboxylic groups. The products yield dyeings fast to washing and to chlorine, the fastness being increased by the after-treatment. In an example cotton impregnated with the 2<1>-naphthylamide of 2: 3- oxynaphthoic acid is developed with a diazo solution of the dyestuff 2-aminophenol # aminohydroquinone dimethyl ether to obtain a deep black dyeing of which the fastness is increased by the after-treatment. Specification 203,032 is referred to.
Patent GB-798157-A (GB)
Title: Speed responsive mechanical governors
IPC: G05D13/10
Filed: 1956-04-13
Abstract: 798,157. Governors. LOGAN, H. H. April 13, 1956 [June 7, 1955], No. 11280/56. Class 57. A centrifugal governor comprises weights 59, 65 on arms 58, 63 pivotally mounted on a rotatable structure and having cam surfaces 68, 70 engaging cam followers on a cross-head 77 secured to the governor spindle 72 which is loaded to oppose the outward movement of the weights by springs 92, 96. The spindle 72 is axially slidable in a stem 10, rotatably mounted in bearings 12, 13 and driven through bevel gearing by a shaft 24, and in a top block 33, both of which are secured between spaced side plates 28, 29 carrying roller bearings 34, 36 and 35, 37 for pins 49, 53 to which the weight arms 63 and 58 are respectively secured. The crosshead 77 is screwed to the spindle 72 and carries at its ends roller bearings 85, 86 whose outer races act as cam followers and engage the cam surfaces 70, 68. When the governor is at rest, the arms 58, 63 extend upwardly, as in Fig. 1, and are each at an angle of between five and fifteen degrees to the spindle axis, the inward movement of the arms being limited by the edges 89, 90 of a stop plate 87 secured to the block 33. The gravitational force of the weights thereby assists the centrifugal force during operation of the governor, the cam surfaces 68, 70 being provided with oppositely curved portions 97, 98 that act on the cam followers as limit stops at maximum governor speed. The spring 96 freely surrounds and, in the free state, is shorter than the spring 92 so that the springs are sequentially brought into operation.
Patent GB-169951-A (GB)
Title: Improvements in or relating to breech closure for guns
IPC: F41A3/46
Filed: 1921-04-19
Abstract: 169,951. Auto-Ordnance Corporation, (Assignees of Eickhoff, T. H.). Oct. 7, 1920, [Convention date]. Machine, guns.-Relates to breech actions having inclined locking abutments the surfaces of which slide upon one another as the breech opens, and especially to guns working on the principle described in Specification 14368/14. According to the invention, for the purpose of distributing the load over the whole area of the abutting surfaces, one abutment is made of material which is more yielding than the other, and is at the same time resilient. For example, one abutment member is made of an alloy of 89 parts of copper, 10 parts of aluminium and one part of iron, while the other member is of hardened steel. The invention is shown applied to a gun having the action described in Specification 148,022.
Patent GB-704094-A (GB)
Title: Improvements relating to anchorages for prestressing elements used in concrete
IPC: E04C5/12
Filed: 1951-05-15
Abstract: 704,094. Pre-stressed concrete. BRITISH TRANSPORT COMMISSION, and HEATON, E. April 22, 1952 [May 15, 1951], No. 11338/51. Class 20 (4) In the manufacture of prestressed concrete articles in which an anchoring member 4 having a conical bore with a helically formed lining 7 is to be used for anchoring a tensioned cable or the like, the anchoring member 4 is supported in a mould by means of a tube 1 passing through a hole in a wall of the mould and having a tapered thread 2 which engages with the lining 7 and a thread 3 for a securing nut 9. A bearing block 6 and a washer 10 may be interposed between the wall of the moulds and the member 4 and the securing nut 9 respectively. The block 6 and the washer 10 may be tapered or wedgeshaped. If an inflatable rubber tube is to be used to core a hole in the concrete an auxiliary tube 12 having a: collar 13 is inserted in the outer end of the tube 1. The inflatable tube passes through the tube 12 and when inflated grips both, the anchoring member 4 and: the tube 12 thereby assisting, in maintaining the position of the anchoring member.
Patent GB-113502-A (GB)
IPC: H01H71/68
Abstract: 113,502. Pickett, F. N., and West & Co., A. March 2, 1917. Electro-magnetic switches. -In a lock-out switch having a shunt closing-coil 4 and a series holding-out coil 2, while the end 6a of the pivoted armature 6 is under the influence of the holding- cut coil the other end of the armature is completely outside the influence of the closing winding and vice versa. The switch is shown in the normal position; when the coils are energized, an auxiliary armature 7 pivoted to the frame of the holding and closing magnet 3 is attracted thereto and puts in tension a spring 7<a> located between the two armatures. When the current in the holding-out winding falls, the spring becomes effective to move the end 6a of the main armature out of the influence of the coil 2 and to bring the other end into the influence of the coil 4 so that the switch is finally wiped home magnetically without opposition from the holding-on windings. An auxiliary pole-piece may be provided to co-operate with the auxiliary armature. The pivoted member 6 may be mainly non-magnetic and be provided with a small armature to serve as the closing means. In the construction shown, the auxiliary armature 7 when attracted completes a shunt magnetic circuit round the shunt coil and thereby limits the current therein.
Patent GB-128618-A (GB)
Title: Improvements in Inlet and Exhaust Valves and their Installation in Air Motors Employed for Automobile Torpedos.
Inventor: THOMPSON WILLIAM PHILLIPS
IPC: F01L1/28
Filed: 1917-08-09
Abstract: 128,618. Thompson, W. P., (Soc Lyonnaise de MÚcanique et d'ElectricitÚ). Aug. 9, 1917. Beat or lift valves; valvespindle guides. - The con. centric inlet and exhaust valves of automobile torpedo engines are housed in a cage 7. which can be bodily removed on removing the cover 16. The admission valve is made in two parts 21, 18. The part 18 is first operated to balance the part 21 by fluid passing through ports 23. The exhaust valve is hollow, has a double seat 9, 10, and is balanced by fluid pressure passing through the holes 13. The cage 7 has a guide 17 co-axial with the valve stems.
Patent GB-494237-A (GB)
Title: Colouring acetate artificial silk
IPC: D06P3/40
Filed: 1937-04-21
Abstract: Cellulose acetate, dyeing; printing.-Acetate artificial silk is coloured bright green shades, especially fast to light and to washing, by applying thereto 1-amino-4-(p-benzene-azoaniline) - anthraquinone - 2 - sulphonic acid or a soluble salt thereof. The dyestuff is obtainable as described in Specification 478,665. In examples: (1) acetate artificial silk yarn is scoured with a very dilute solution of soap and ammonia, washed in cold water and dyed by entering it into a dyebath at 50 DEG  C. containing the sodium salt of the dyestuff, the temperature being then raised slowly to 80-85 DEG  C. with additions of sodium chloride, and so maintained for 3/4 hour, whereupon the yarn is washed and dried; (2) an acetate artificial silk woven fabric is printed with an aqueous paste containing the sodium salt of the dyestuff, sodium dibenzylanilinesulphonate, potassium carbonate, crystal gum thickening and sodium m-nitrobenzenesulphonate and the printed fabric is dried, steamed, washed and dried.  Specifications 310,827, [Class 15 (ii)], and 396,412 also are referred to.
Patent GB-1033602-A (GB)
Title: Improvements in and relating to quadripole networks and their construction
IPC: H03F3/347
Filed: 1963-03-22
Abstract: 1,033,602. Transistor amplifier circuits. J. ELDIN, and M. SAVELLI. March 22, 1963 [March 22, 1962], No. 11506/63. Heading H3T. [Also in Division H1] A high-gain amplifier comprises a single semiconductor body forming a field effect transistor and a junction transistor in tandem. As shown, Fig. 2, the N-type body 35 is provided with a source electrode 32, and a P-type gate electrode 31, and the P-type layer 41 forms a junction with the N-type material 35 to provide a drain electrode for the field transistor, and the NPN materials 35, 41, 45 form the emitter, base and collector regions of a junction transistor. The device has a large forward gain but a low backward gain, thereby effectively decoupling the output load 4 from the input circuit. In a preferred embodiment, Fig. 3 (not shown), an N- type silicon wafer 45 has a P-type zone 41 formed by diffusion of boron. A further N-type layer is formed in the surface of the P-type layer by diffusion of phosphorous. These diffusions are carried out through using the silicon oxide masking technique. Parallel chromium strips 32 1  ... 32 3  are then vapour deposited using a mask comprising a molybdenum sheet having a rectangular aperture, having juxtaposed gold-plated tungsten wires stretched across it, the gold having then been dissolved to provide the slits through which the vapour is to pass. The wafer is then etched chemically to provide arcuate grooves 36 1  ... 36 4  between teeth 35 1  ... 35 3  the grooves being connected by two lateral grooves one of which is shown at 36 5 . The grooves are then metallized with aluminium in a vacuum metallizing process in which the shade effect due to the flaired shape of the teeth is utilized to ensure that only the bottoms of the grooves are metallized. Using a wax masking surplus aluminium is then removed by hydrofluoric acid, and the body is then heated to alloy the aluminium to the base of the grooves to form a P-N junction thereat. Finally, ohmic contacts 41 1 , 41 2  and 42 are metallized to the P- and N-portions 41, 45. In a modified form, Fig. 4 (not shown), the portion 45 is reduced in size to reduce the capacity of the electrode 42. The electrodes connecting to the P-type material are here formed from a gold-plated metal wafer alloyed to the silicon. In a further method of manufacture. Figs. 5, 7 (not shown), successive diffusion through silicon oxide masks are used to provide a P-layer 41, and an N-layer 35 and interconnected nests 60, 61, 62 of P-type material. Then with a portion of the surface of the nest 60 masked a further diffusion of N-type material is effected to provide a contact for the electrode 32 which like the contacts 41 1 , 37 are provided by metallizing with aluminium. Contact 42 is goldmetallized. In a modification of the embodiment of Fig. 3 the grooves may be coated by silicon oxide and aluminium electrode material deposited therein, no P-N junctions being formed at these points.
Patent GB-1468378-A (GB)
Title: Method for manufacturing a transistor
IPC: G01R31/316
Filed: 1974-03-14
Abstract: 1468378 Manufacturing semi-conductor devices FUJITSU Ltd 14 March 1974 [24 March 1973] 11507/74 Heading H1K In the manufacture of a transistor, particularly an ultra high frequency type having an emitter width of 1 Á or less, a monitor pattern transistor is simultaneously formed therewith, the monitor pattern transistor having basically similar emitter and base patterns to the transistor to be manufactured, but having additional portions connected thereto which are such as to enable the probe of a measuring apparatus to make contact therewith in order to measure the direct current characteristics of the monitor transistor, and since these characteristics approximately correspond to those of the transistor to be manufactured it can be determined whether these are satisfactory and the transistor should be completed by forming the electrodes thereof. If the direct current characteristics do not reach the required value an additional emitter diffusion may be effected before completing the device. Fig. 6A, shows the pattern of the transistor to be manufactured having base region 23 and emitter regions 24. Fig. 6B shows the corresponding monitor transistor pattern having emitter regions 27 and an additional wide area region 28 connected thereto, and a first base region 25 and a second base region 26 under the additional emitter region 26. The second base region 26 has a higher impurity concentration and is deeper than the first base region 25, Fig. 6C, and is preferably formed before the base region 25. Preferably the transistors are formed in the same wafer, although, particularly when many transistors are formed simultaneously in a number of wafers, this need not be so. Particular examples are given utilizing a conventional photoetching method and also utilizing a Si 3 N 4  over-etching method.
Patent GB-546334-A (GB)
Title: Improvements in or relating to method of converting isoparaffinic hydrocarbons into hydrocarbons of higher molecular weight
IPC: C07C2/60
Filed: 1940-07-10
Abstract: 546,334. Catalytic agents. STANDARD OIL CO. July 10, 1940, No. 11520. Convention date, July 28, 1939. [Class 1(i)] [Also in Group IV] A catalyst for the alkylation of isoparaffin hydrocarbons with normally gaseous olefines is prepared by reacting a saturated normally liquid hyrocarbon with aluminium chloride or bromide. Excess of the saturated normally liquid hyrocarbon, preferably comprising a paraffin or cycloparaffin of from 6 to 12 carbon atoms, is refluxed with the aluminium halide whilst stirring, gaseous hydrogen chloride or bromide being advantageously passed in to promote the reaction; the product is a heavy oily liquid, normally yellow to red in colour, which is not a mere addition product. Examples are. given of a catalyst prepared from aluminium chloride and n-heptane.
Patent GB-685747-A (GB)
Title: Cyclohexen-(1)-yl-ethylamine and process for the manufacture thereof
IPC: C07C211/25
Filed: 1949-10-14
Abstract: The invention comprises cyclohexen - (1)-ylethylamine, and the manufacture thereof by reducing cyclohexen - (1) - ylacetonitrile or cyclohexen - (1) - ylacetamide by means of lithium aluminium hydride. Examples illustrate both methods of preparation. Specification 670,991 is referred to.
Patent GB-259853-A (GB)
Title: Device for securing spare wheels on vehicles
IPC: B62D43/02
Filed: 1926-05-03
Abstract: 259,853. Sandag@, J. @. May U, 1@ 1926. Air-heating stoves comprise a body 2 divided into front and rear compartments 10, 11 by an open-bottomed flue 9, air being admitted at the lower ends of the compartments and flue and being heated by means, such as a gas burner 18, adjacent the lower portion of the flue. Openings 12 at the top of the flue allow directly-heated air to enter it, the air then passing to a mixing-space formed between a plate 4 having perforations 6 and an upper imperforate plate 13 before entering the room.