baber/WOPTO huggingface dataset:
Patent GB-499220-A (GB)
Title: Improvements connected with distributors for fertilizers and the like for horticultural or like purposes
IPC: A01C15/02
Filed: 1937-07-28
Abstract: 499,220. Distributing fertilizers &c. BANNISTER, F..July 28, 1937, No. 20855. [Class 18] A distributer for fertilizers &c. for horticultural and like purposes comprises two cylindrical relatively rotatable containers 1, 2, with closed ends and with apertures 5, 6 which can be made to coincide for filling the outer container 1 having gauges 3, 4 with either of which opening 6 can register, a chain 12 being arranged within the device to break up lumps when the distributer is manually reciprocated. In a modification, a single cylinder with an end removable for tilling is used, its curved surface being perforated, or carrying gauges as before.
Patent GB-1215181-A (GB)
Title: Transducer driver circuit controlled by saturating cores
Inventor: MATHAMEL FLAVIUS ANDRE
IPC: H03K17/00
Filed: 1968-05-02
Abstract: 1,215,181. Non-contact-making relays; semi-conductor switching circuits. BURROUGHS CORP. 2 May, 1968, No. 20876/68. Headings H3B and H3T. A potential change (e.g. from + 5 v. to 0 v.) is obtained at an output terminal 26 whenever a switching pulse is applied to the base 28 of a transistor 30, provided that a magnetic shunt 14 has been withdrawn from between a permanent magnet 12 and an adjacent saturable core 10. With the shunt withdrawn, the permanent magnet inhibits setting of the core flux by current through its winding 36, and this winding therefore has a low impedance in a circuit from a source 42 (+24 v.) through the transistor to a sink 35 (- 14 v.). On the other hand, with the shunt in position so as to neutralize the permanent magnet field, the winding 36 has a high impedance due to setting of the core flux, and the potential at the output terminal remains at the value (+5 v.) determined by a Zener diode 40. The core is shortly reset between successive switching pulses by current from a source 45 ( + 24 v.) to ground through the Zener diode. The transistor emiter potential with respect to ground is determined by diodes 31, 33, which are shunted by a capacitor 32 to speed up the switching action. The transistor may be common to a plurality of saturable cores, as shown, each core having its movable shunt operated by keyboard-controlled code bails, Fig. 1 (not shown). Potential changes at selected output terminals are then obtained in response to operation of a single key.
Patent GB-845057-A (GB)
Title: Anhydride hardeners for polyepoxides
IPC: C08G59/14
Filed: 1958-06-30
Abstract: A polyepoxide composition comprises (i) an epoxy compound having a 1,2-epoxide equivalency greater than one, (ii) at least one monohydric primary or secondary alcohol, and (iii) an anhydride component in the form of pyromellitic dianhydride or of a mixture of pyromellitic dianhydride with one or more mono-anhydrides of dicarboxylic acids (the dianhydride being at least 50% by weight of such an anhydride mixture), there being 0,6-1,1 anhydride group of (iii) per epoxy group of (i), and 0,1-0,6 alcoholic hydroxyl groups of (ii) per anhydride group of (iii).  Specified compounds are:-(i) an epichlorhydrin/4,41 - isopropylidene diphenol resin, 3, - 4 - epoxy - 6-methyl - cyclohexylmethyl 3,4 - epoxy-6-methyl-cyclohexanecarboxylate, and epoxidized soybean oil; (ii) tetrahydrofurfuryl alcohol, furfuryl alcohol, the monomethyl ether of ethylene glycol, n-butanol, benzyl alcohol, 2-(hydroxymethyl)-tetrahydropyran, cyclohexanol, 2-phenoxyethanol, and a ,a ,o -trihydroperfluoro-n-alkyl alcohols; (iii) phthalic and/or maleic anhydrides.  Amine accelerators are also preferably present, e.g., p,p1-methylene dianiline, benzylamine, tert-butylamine, ethylene diamine, aniline, diisopropylamine, dimethylbenzylamine, nicotinic acid, the tris (2-ethylhexanoate) of 2,4,6-tris(dimethylaminomethyl) phenol, glutamic acid, and dicyandiamide.  Uses.  Casting, potting, adhesives and laminates.
Patent GB-398989-A (GB)
Title: Improvements in and relating to electric propulsion systems
IPC: H02P9/04
Filed: 1932-07-25
Abstract: 398,989. Control of two D.C. motors. BRITISH THOMSON-HOUSTON CO.. Ltd., Crown House, Aldwych, London.-(Assignees of Beekman, R. A.; 38, Washington Avenue, Schenectady, New York, U.S.A.) July 25, 1932, No. 20962. Convention date, July 24, 1931. [Class 38 (iii).] Varying e.m.f.-In an electric ship propulsion system comprising a number of motors and a number of generators not a multiple of the number of motors, the voltage of a number of generators which is a multiple of the number of motors is variable and reversible and each of the motors can be connected independently to at least one of the variable voltage generators, and all the generators can be connected to the motors when the variable voltage generators are operating with full field. As shown applied to a system employing three generators 1, 2, 3 and two motors 4, 5, the fields 36, 47 of the generators 1, 3 are supplied through controllers 42, 53. With switches 6, 8 in the left-hand position and the switch 7 in the.position shown motors 4, are fed separately from the generators 1, 3 which are independently controlled. Generator 2 may replace generator 1 by throwing switch 6 to the right and similarly it may replace generator 3 by throwing switch 8 to the right. The field 56 may be fed through either controller 42, 53 by appropriate manipulation of switches 57, 39 or 50, an interlocking bar 66 preventing simultaneous connection of both controllers to the filed. When independent control of the. motors is required switches 6, 8 are thrown to the left-hand positions and switch 7 may be in the position shown or thrown to the right so that generator 2 when excited can supply a separate circuit 34, 35. For maximum speed, switch 7 is thrown to the left thus connecting all the generators and motors in an uncompleted series circuit which is completed by the closure of a contactor 9 when both controllers 42, 53 are in the full speed ahead position. The energizing coil of contactor 9 is fed from bus-bars 45, 46 through contacts 68, 70 and a segment 69 on controller 42, similar contacts 72, 74 and segment 73 on controller 53, and contacts 78,79 on switch 7. At the same time, switch 60 is energized to connect the field 56 of the generator 2 to the bus-bars 45, 46, this switch if necessary including resistance contact and a time-delay device 63. If either controller is moved from its full speed ahead portion contactor 9 and switch 60 are de-energized so that the series circuit is broken and the generator 2 cut out, but separate circuits for the other generators and the motors are maintained independently of the switch 7 by contactors 10, 11 fed from the bus-bars 45, 46 through contacts 92 on the switch 60 and the two upper contacts and associated segments of either of the controllers which keep their circuit closed at all positions other than that for full speed ahead.
Patent GB-1494304-A (GB)
Title: Method of and apparatus for working flexible sheet material
IPC: C14B1/40
Filed: 1976-05-21
Abstract: 1494304 Working flexible sheet material VYZKUMNY USTAV KOZEDELNY 21 May 1976 [23 May 1975] 20995/76 Heading C6C Flexible sheet material, especially leathers, are worked by continuously pressing the sheet between a pair of opposed rotatable rollers having protrusions and recesses so disposed therein as to form on each face of the continuously moving sheet a checkerboard pattern of protrusions and recesses. Apparatus comprises a press including a pair of opposed rotatable rollers 1, 2 each having side-by side peripheral series of teeth penetrating the intertooth spaces of the opposite roller, the teeth of each peripheral series being staggered in relation to the teeth of the next adjacent peripheral series so that on passing the sheet between the rollers the teeth deform the sheet to form on each face of the sheet a checkerboard pattern of protrusions and recesses. The press may comprise a pair of opposed toothed rollers, one being a supporting roller and the other a pressing roller. Each roller preferably consists of a series of toothed rings 11, 12, 21, 22 mounted side by side on a cylinder, each ring having the teeth thereof angularly displaced by half of the pitch of the teeth in relation to the teeth of the next adjacent ring on the cylinders. The pressing roller may be slidingly adjustable towards and from the opposed roller to provide for adjustment of the degree of penetration of the teeth of the pressing roller into the intertooth spaces of the opposed roller. A plurality of presses may be arranged in series and air jets are arranged between the presses. In another arrangement the presses are arranged inside a closed treating chamber. Alternatively the presses are arranged in a vat, and between the individual presses jets of tanning solution are arranged. In a first unit there are arranged one supporting roller in operative association with at least two pressing rollers. In a second unit there are arranged one pressing roller in operative association with at least two supporting rollers. The first and second units may be combined. The teeth of the supporting roller of the first unit penetrating the intertooth spaces of the pressing roller of the second unit. In the combined units, between the teeth of a hollow supporting roller the apertures are arranged, these apertures being connected with a vacuum space inside of the supporting roller. Also, between the teeth of a hollow pressing roller, apertures are arranged, these apertures being connected with a vacuum space inside the pressing roller. A cutting cylinder may be arranged at the entry to a press to cut the sheet prior to its passage between the rollers of the press.
Patent GB-1096234-A (GB)
Title: Improvements in fluid obturating devices
IPC: F16K31/528
Filed: 1965-05-18
Abstract: 1,096,234. Valves. SOC. ANON. FRANCAISE DU FERODO. May 18, 1965 [May 19, 1964], No. 21058/65. Heading F2V. A valve with an inlet 2 and outlet 3 connected through a seat 8 has a further outlet 4 upstream of the seat, which latter has one or more recesses 9 therein to provide for a bleed connection between the inlet and outlet when a diaphragm closure 5 coacts with the seat, the bleed ceasing when the diaphragm is further depressed and so squeezed on to the seat. The diaphragm is connected to an operating stem by a disc 13 relatively rotatable thereto, the stem being rotated by handle 14 connected thereto and undergoing a helical motion as the result of a fixed stud 11 engaging a helical stem groove 10. The groove 10 is arranged to provide for a non-linear relationship between movements of the handle and stem. In the fully open position a diaphragm surface 15 abuts a casing surface 16. The groove 10 may be disposed in a plastics sleeve around the stem and the stud 11 may be located in an eccentric member or the operative end 11a of the stud may be eccentric relative to the stud. The bleed recess may be embodied in the diaphragm instead of the seat. Two co-operating resilient elements may be provided.
Patent GB-920284-A (GB)
Title: Improvements in constant voltage transformers
IPC: G05F3/06
Filed: 1960-06-15
Abstract: 920,284. Transformers and inductances. FOSTER TRANSFORMERS Ltd., and R. E. JENNINGS. June 14, 1961 [June 15, 1960], No. 21060/60. Class 38 (2). A constant voltage transformer comprises two similar magnetic cores 2 and 3 carrying a main winding 21 and a reactor winding 31, respectively, mounted between a single pair of deeply dished end-frames 1 preferably of non- ferrous material and together with other equipment sandwiched between end-covers 6 and 10. A capacitor 7 is housed in cover 6 which is supported on one of the end-frames 1. The other end-frame 1 may be adapted to accommodate an additional smaller reactor 8 of the air-gap type against an aperture 9 with the core of the reactor 8 seated against the outer face of the part 4. The exposed winding unit of reactor 8 is covered by cover 10 which together with the core of reactor 8 is bolted to the main cover 4. A terminal block is provided in an aperture 11. Feet 12 are fixed to the base of flanges 5 by bolts traversing core 2. Slotted openings 13 are provided for cooling and ventilation. Air-gaps filled by a non-magnetic spacer may be provided between the E-shaped reactor core and the transformer core which may be formed of E and I laminations.
Patent GB-447862-A (GB)
Title: Manufacture of coloured products
IPC: D01F1/06
Filed: 1935-07-25
Abstract: Vat dyes are obtained in a finely divided form by oxidizing their leuco compounds dissolved, together with a cellulose derivative, e.g. cellulose nitrate, acetate, formate, propionate, or butyrate or methyl, ethyl or benzyl cellulose, in an organic solvent.  Preferably the cellulose derivative is present in high concentration and the oxidation is effected by mechanical treatment of the solution under oxidizing conditions.  The vat dyestuff preparation may then be isolated by removing the solvent or the paste or solution may be mixed with suitable quantities of solvent or cellulose derivative solution and the resulting solution formed into coloured filaments, foils, films and like goods.  Specified solvents are acetone alone or mixed with water or methyl or ethyl alcohol, chloroform, ethylene dichloride alone or mixed with methyl or ethyl alcohol and mixtures of methyl chloride with methyl or ethyl alcohol.  The leuco compounds used as starting materials may be obtained (a) by electrolytic reduction of a suspension of the vat dyes in water or in aqueous caustic alkali, ammonia or triethanolamine covered by a layer of oil, using a lead or other metal cathode with an area of 4 square cm. and a current of 1--400 milliamperes, or (b) by agitating the vat dye in excess in sodium hydrosulphite solution and filtering off the unreduced dye, or (c) by agitating the vat dye with finely divided zinc-copper, aluminium-copper or other galvanic couple in a medium which is a solvent for the leuco compound, but not for the vat dye itself.  In an example, indigotin is agitated with a mixture of zinc dust and copper dust in acetone and filtered, the resulting acetone solution of leuco indigo is mixed directly with cellulose acetate, more acetone and water, and the mixture, after addition of hydrogen peroxide is kneaded for 12 hours; the resulting pigmented paste is added to a spinning solution of cellulose acetate in acetone and water and the solution is spun to obtain a deep blue yarn, fast to light and acid fading.  In wet-spinning or wet-casting processes, a small amount of an oxidizing agent may be added to the precipitating bath to ensure oxidation of all the leuco compound in the finished product.
Patent GB-1059014-A (GB)
Title: Circuit arrangement for feeding subscriber stations in telecommunication systems, particularly telephone systems
IPC: H04M19/00
Filed: 1965-05-19
Abstract: 1,059,014. Automatic exchange equipment. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. May 19, 1965 [May 21, 1964], No. 21190/65. Heading H4K. Line current from the exchange battery is supplied to each wire of a subscriber's line through the emitter-collector path of one of a pair of transistors whose emitters are connected to one and the other poles of the battery and by means of adjusting the working point of the transistors the additional attenuation created in the transmission path by this feed circuit can be made symmetrical. The transistors are turned off when the D.C. loop is opened. Diodes connected to the bases of the transistors have temperature response characteristics the same as those of the base-emitter diode of the transistors to stabilize the working point of the transistors against temperature fluctuations. The voltage across a resistance in one emitter path is monitored to detect changes in the line condition.
Patent GB-185002-A (GB)
Title: Improvements in or additions to petrol and oil tanks for motor bicycles
IPC: B62J35/00
Filed: 1921-08-11
Abstract: 185,002. Purrott, A. E., and Everall, A. R., (trading as Purrott, A. E.). Aug. 11, 1921. Fuel containers.-In motorcycle petrol tanks, the front ends of which are formed with a semicircular recess 1 adapted to fit round the steering-head, as shown in plan in Fig. 2, the corners at each side and top of the recess are fitted with protecting heads or mouldings 3. The headings may be solid or may be made of split tube 3 with a metal filling 5 as shown in Fig. 4.
Patent GB-151808-A (GB)
Title: Slabs, blocks and the like building and paving units
IPC: B28B23/00
Filed: 1919-09-02
Abstract: 151,808. Blundell, A., and Blundell, F. Sept. 2, 1919. Processes.-Building and paving units composed mainly of a mixture of builder's plaster, sawdust and hair b, or of ground clinker and portland cement packed round hollow wooden box-like cores a of plasterer's laths &c. are given a smooth finished outer surface in the same moulding operation by closing the mould and running or forcing in a quick-setting slip composed of plaster and French chalk, or of parian cement.
Patent GB-336592-A (GB)
Title: Improvements relating to return-tube boilers
IPC: F22D7/02
Filed: 1929-07-15
Abstract: 336,592. Owen, L. E. July 15, 1929. Partitions and baffles in water space.-Vertical deflector plates 7 fitted in the water space at the front of the combustion chamber 2 of a returntube boiler to promote the water circulation are suspended by bars 12 from a cross rail 16 secured to the longitudinal stays 9. Vertical plates 20 at the back of the combustion chamber may be suspended from the back stays. An inclined deflector 10 is also mounted on the rail 16 and is slotted for the passage of the bars 12.
Patent GB-664343-A (GB)
Title: Improvements in or relating to valves
IPC: F16K1/38
Filed: 1947-08-08
Abstract: 664,343. Valve closure members. ELECTROFLO METERS CO., Ltd. Aug. 8, 1947 [Aug. 3, 1940], No. 21826/47. Class 135. A valve closure member is formed as an enlargement on a valve stem passing through a circular seat opening, the generatrix of the opening lying at an acute angle to the valve stem and having a sharp leaving edge for the fluid on its outlet side, and means is provided co-operating with the enlargement on the stem to provide a smooth flow of fluid along the stem in such manner that the fluid at no time flows across a free space along the stem. In a double beat valve with an inlet 12 and an cutlet 26, the passage 13 is divergent in the direction of flow and the passage 14 is convergent in the direction of flow. Smooth paths for the fluid which has flowed past the closure members are provided by a narrow-edged skirt 23 on the casing which engages a plunger 18 on the stem and by the curved contour 24 of the closure member 19 and a sharp lip 25 on the casing. The Specification as open to inspection under Sect. 91 comprises also alternative shapes of closure member. This subject-matter does not appear in the Specification as accepted.
Patent GB-292382-A (GB)
Title: Improvements in or relating to means for stopping runaway tubs, corves or the like
IPC: B61K7/22
Filed: 1927-08-22
Abstract: 292,382. Ball, M., and Ball, J., (Representatives of Ball, W. H.). Aug, 22, 1927. Axle stops of the turn-over type have two weighted levers pointing in opposite directions, the light arm of each lever being depressed by axles 6 of vehicles travelling in either direction. The levers are mounted on axles 14, 17 on a common base 4 and have weighted ends 12, 15 occupying the width of the recess 9 and normally resting on the steps 10, 11. The ends 12, 15 are at least double the width of the light arms 13, 16 which normally have their summits 20 side by side. When overthrown by an axle at excessive speed, the arms 13, 16 engage the risers 18, 19 of the steps 10, 11 in or beyond the vertical position.
Patent GB-441212-A (GB)
Title: Improvements in or relating to valves for the control of fluid pressure
IPC: G05D16/18
Filed: 1934-07-28
Abstract: 441,212. Hydraulic lifting - jacks. POWELL, A. D., 31, Clare Road, and BRADBURY & SONS, Ltd., J., New Street, both in Braintree, Essex. July 28, 1934, No. 22056. [Class 78 (iii)] [See also Group XXIX] The release valve A of a hydraulic jack is opened to lower the load by screw - and - nut mechanism which counteracts the pressure of the holding-down spring D. By rotating the cap F, Fig. 4, on the end of the operating-lever, rotation is imparted to the nut E through universallyjointed rods G, G<1>. The nut E imparts axial movement to the non-rotating spindle B which contacts with the valve and also carries an adjustable abutment C for the spring. Thus, raising of the spindle applies additional compression to the spring and allows the valve to open, while lowering allows the spring to function in the usual way. The angular movement of the cap F is limited by stops.
Patent GB-963873-A (GB)
Title: A compression feeding device for a textile machine
IPC: D01H13/04
Filed: 1963-06-04
Abstract: 963,873. Feeding apparatus. J.M.J. SAUVAGE. June 4, 1963 [June 1, 1962], No. 22069/63. Heading D1D. In feeding means which groups and condenses fibres by compression, the web is separated into a plurality of tows each of which engages in a groove of a grooved roller. As shown, tows of fibres are fed into a channel A and pass into grooves in a roller B, which engage with corresponding bands in a roller C, and between rollers E, D which are respectively corrugated and elastic-covered, to pins P of a drafting device. The roller B is driven and drives rollers C, D by contact and roller D drives roller E, pressure, preferably hydraulic, acting on the axles of rollers B, C and E. Since the rotational speed of the rollers B, C is not the same at their peripheries as at the bottom of the grooves, an effect arises which tends to stretch and parallelize the fibres. In another form, the tows are fed over the top of roller B, the roller at C is elastic-covered and the roller at D is grooved with the surface of its bands corrugated, while roller E is grooved.