baber/WOPTO huggingface dataset:
Patent GB-1371806-A (GB)
Title: Electrical capacitors
IPC: H01G13/00
Filed: 1972-11-27
Abstract: 1371806 Capacitors; component assemblies H WALKER 27 Nov 1972 [12 Oct 1971] 47372/71 Headings H1M and H1R A method of manufacturing a capacitor comprises winding strips of heat-shrinkable thermoplastic dielectric material, e.g. polypropylene, and electrode foils or coatings on a mandrel to form a roll, withdrawing the mandrel, injecting thermoplastic or thermosetting resin into the bore so formed, and heating the assembly to shrink the dielectric foils. Preferably, as shown, the injection is carried out so as to provide end cap 6 at one end of the bore and retaining boss 27 at the other. One lead 3 may be brought through the bore prior to filling it so that both leads extend from the same end. The capacitor may be enclosed in casing 5, being separated from it by combustion extinguishing material 16, e.g. chlorinated hydrocarbon wax. Closure 8 may be a push fit into casing 5 so that on increase of internal pressure it may move outwardly and cause leads 3, 4 to disconnect from clip terminals 10, 11. Movement of closure 8 may uncover a vent hole 17. Optionally, a resistor or inductor may be located in the bore. In modifications, the leads may be brought out at opposite ends (Fig. 3, not shown), a paper or perforated tube may be placed in the bore before filling it, and the capacitor may be encased by a plastics wrapper or encapsulated, e.g. by dipping. Instead of the movement of closure 8 being harnessed to disconnect the leads, a flexible diaphragm whose periphery is fixed to the casing may be used.
Patent GB-1490702-A (GB)
Title: Filters
IPC: B01D39/16
Filed: 1974-11-01
Abstract: 1490702 Filter bag HOECHST AG 1 Nov 1974 [2 Nov 1973] 47408/74 Heading B1D A tube shaped filter (e.g. for sludges) comprises an outer support of woven fabric of polyester or polyamide continuous filament yarn and an internal layer of non-woven fabric of man made fibre disposed therein. The internal layer may be a needle felt or a layer of spun bonded fibres and consist of polycaprolactam, polyhexamethylene adipate, polyethylene terephthalate, polybutylene terephthalate, polyacrylonitrile, polyethylene or polypropylene. A needle felt of an acrylonitrile copolymer comprising at least 85% acrylonitrile may be used. Industrial sludges may be pretreated with coagulants and flocculating agents e.g. polyacrylamide, polymeric phosphates, ferric chloride, iron or aluminium sulphate, lime or crude phosphate, acids, polysilicates or other electrolytes. Industries mentioned are ceramics, glass, latex, smelting, metal treating, chip board and fibre board, paper, food, wine, dairy products, brewing and distilling and yeast fermenting.
Patent GB-1459619-A (GB)
Title: Heat exchanger plates
IPC: F28F3/08
Filed: 1974-11-04
Abstract: 1459619 Plate heat exchangers APV CO Ltd 28 Aug 1975 [4 Nov 1974] 47599/74 Heading F4S A heat exchanger plate 1 of generally rectangular formation with an aperture 2 adjacent each corner comprises a reinforcing flange 5 along each of two opposite edges, formed as by bending the plate, in which each flange terminates short of the apertures or significantly reduces in width in the region of the apertures (Fig. 4). The construction is stated to maximize the diameter of the apertures.
Patent GB-1032467-A (GB)
Title: Bistable amplifier and control device
Inventor: CRAY SEYMOUR ROGER
IPC: H03K3/037
Filed: 1962-12-17
Abstract: 1,032,467. Transistor and valve switching. CONTROL DATA CORPORATION. Dec. 17, 1962, No. 47605/62. Headings H3P and H3T. A bi-stable circuit comprises transistors TR1, TR2 forming a class A amplifier with a non- linear feed-back network 22. The circuit parameters are arranged such that when an input of - 3 v. is applied to input terminal 12 (or 12<SP>1</SP>) the output terminal 17 (or 17<SP>1</SP>) is at -¢ v., Fig. 3A (not shown), and the diode 60 is forward biased providing a large negative feedback which holds the output constant at -¢ v. As the input is raised towards zero volts, the output remains constant until the input has risen sufficiently to cut off diode 60 (-1À5 v. input), causing the gain of the amplifier to increase. A further increase in input now causes diode 62 to conduct, re-applying the negative feedback, and the circuit takes up a second state in which -¢ v. input produces - 3 v. output. The circuit thus exhibits gain only in the transition region in which neither diode 60 nor 62 conducts, the width of this region being adjusted by the bias resistors 26, 56, and constitutes a two-state switching circuit in which the transistors always operate under class A conditions. A number of similar circuits may be connected in fan-out or fan-in arrangement, Figs. 4, 5 (not shown), in AND/OR arrangements, Figs. 6, 7 (not shown), or two may be cross-coupled, Fig. 8 (not shown). The two stage amplifier shown may be replaced by a single stage amplifier, and point contact transistors or valves may be used in place of junction transistors.
Patent GB-1197738-A (GB)
Title: Improvements in or relating to Fuel Injection Valves.
IPC: F02M61/08
Filed: 1967-10-19
Abstract: 1,197,738. Valves. ROBERT BOSCH G.m.b.H. 19 Oct., 1967 [20 Oct., 1966], No. 47608/67. Heading F2V. [Also in Division F1] A solenoid actuated fuel injection valve comprises an armature 7 with a pin 8 secured thereto so as to be reciprocable to actuate a valve needle 13, the pin 8 and needle 13 being separate and having a gap A therebetween. The needle 13 is mounted in a body part 10 which is screwthreaded into the main body 1, so that the gap A can be adjusted. Once adjusted, the part 10 is locked into the body 1 by an adhesive placed in bores 18. A part 6 is screw-threaded into an inlet connection 4 to act as an adjustable stop for the armature 7. The fuel enters the valve at 4, and passes through the valve body to a chamber 10b, and through passages 23 in a nozzle body 12, Fig. 2, to be metered by a gap 25 between the nozzle body bore and an enlargement 13c of the needle 13. In Fig. 3, not shown, the fuel is metered by tangentially arranged passages (27) in the nozzle body.
Patent GB-941986-A (GB)
Title: Recovery of rhodium from fission products
IPC: C22B11/00
Filed: 1960-03-02
Abstract: 941,986. Separation of rhodium from fission products. ENGELHARD INDUSTRIES Inc. March 2,1960 [March 4,19591, No. 47754/62. Divided out of 941, 985. Heading G6R. [Also in Division C1] Rhodium is recovered from an acid solution containing nuclear fission products by treating the solution to precipitate insoluble sulphides and then separating rhodium from the precipitate. A nitric acid solution of fission products may be treated with hydrochloric acid and evaporated several times to remove nitric acid, followed by precipitation of sulphides with hydrogen sulphide from the hydrochloric acid solution. The precipitate is dissolved in aqua regia, the rhodium converted to Na 3 Rh(No 2 ) 6  by addition of NaNO 2 , and the solution made alkaline to precipitate impurities which are removed. The solution is heated with hydrochloric acid, ruthenium and other volatile fission products removed by distillation (as described in Specification 941, 985), and then the rhodium reduced to metal with iron, magnesium, aluminium, zinc, or formate ion. The metal is heated in chlorine to form insoluble RhCl 3  which is reduced in hydrogen to the metal.
Patent GB-1270775-A (GB)
Title: Improvements in or relating to magnetic ignition distributor for internal combustion engines
IPC: H01F38/12
Filed: 1970-10-08
Abstract: 1,270,775. Ignition coils. FIAT S.p.A. 8 Oct., 1970 [17 Oct., 1969], No. 47978/70. Heading H1T. In a magnetic ignition distributer for an internal combustion engine a rotating ferromagnetic yoke 22 completes the magnetic circuits linking the primary winding 14 and each of the secondary windings 16 in turn. Each winding 14, 16 has a ferromagnetic core 13, 15 and there may be a fixed ferromagnetic yoke 17 overlying one end of all the cores and separated from them by an air gap T. Another air-gap T, separates the other ends of each of the cores in turn from the movable yoke 22, the axis of rotation of which is coaxial with the axis of the primary core 13. The yoke 22 mounted on a shaft 21 is driven by the engine using a chain and gear wheel 12. The windings may be connected directly or through terminals c to cables and a resin or fluid dielectric may fill the space within the casing 20.
Patent GB-1099247-A (GB)
Title: Coupling between clock-hand and its shaft
IPC: G04B19/04
Filed: 1966-10-28
Abstract: 1,099,247. Clocks. KIENZLE UHRENFABRIKEN G.m.b.H. Oct. 28, 1966 [Nov.5, 1965] No. 48367/66. Heading G3T. [Also in Division F2] A coupling between a clock hand 7 and its shaft 6 comprises a leaf spring 1, the centre part 3 of which is rigidly fixed to a bushing 5 whilst the free end 4 of the spring is detachably inserted in a boring in the hand. In a modification, Figs. 3, 4 (not shown), the hand and the shaft are coupled by interlocking bushes (8, 9) joined by a spring (10) which is fixed in the bush (9) and extends into a channel in the bush (8).
Patent GB-1064909-A (GB)
Title: A clamp for trousers braces
IPC: A41F3/02
Filed: 1965-11-16
Abstract: 1,064,909. Clamps. H. SCHEIDEMANTEL. Nov. 16, 1965 [Nov. 17, 1964; Feb. 5, 1965], No. 48594/65. Heading E2B. A clamp for a pair of trouser braces has one clamping jaw 12 on a base-plate 2 and a second clamping jaw 12 on a resilient Clamping piece 7 which is hingedly connected to the baseplate and which is urged towards the baseplate, in use, to grip a trouser waistband between the clamping jaws upon swinging of a clamping lever 1 pivotally mounted on side pieces 3 of the base-plate and engaging the clamping piece 7 with a cam action, and a latching spring 8 which automatically holds the clamping lever in the clamping position after it has been swung to this position but which can be pressed backwards towards the baseplate with a push button action to release the clamping lever and allow the clamping piece to move away from the base-plate. In the construction shown the clamping lever engages the clamping piece by means of two curved cam portions 6, the position of the pivots for the clamping lever being such that the spring 8 tends to move the lever to the releasing position. The spring 8 is connected to the clamping piece 7 by a rivet which holds the jaw 12 to the clamping piece and the spring passes through an aperture in the clamping piece 7 and has an abutment 10 which is engaged by a lug 9 of the clamping lever to hold the lever in the clamping position. The end portion 11 of the spring extends above the clamping lever so that it can be manually moved by pressure of a finger to release the abutment 10 from the lug 9. In a modification the spring 8 is connected to the base-plate by a rivet which holds the other clamping jaw to the base-plate and the spring passes through an aperture in the upper end portion of the base-plate which also receives the end portion of the clamping piece and an eye 13 by which the clip is attached to the braces; the end portion of the spring is reversely bent for manual actuation. In this construction the spring has an aperture which serves as one abutment for the lug 9 of the clamping lever and a second abutment formed by the end surface of a bent out lug the two abutments enabling the jaws to be secured in alternative clamping positions. In a further construction in which the spring is also secured to the base-plate, the curved cam portions are omitted and instead the clamping lever engages the clamping piece by means of two lugs. The clamping lever also has an internally concave operating arm which embraces the clamping piece 7 which is correspondingly curved; this enables the clip to clamp a thicker trouser waistband than the other constructions.
Patent GB-1092367-A (GB)
Title: Flow regulating valves
Inventor: ZUBLIN MARCEL WILHELM
IPC: F16K31/68
Filed: 1964-05-01
Abstract: 1,092,367. Valves. SULZER BROS. Ltd. April 13, 1965 [May 1, 1964], No. 48607/64. Addition to 946,275. Heading F2V. The valve described in the parent Specification is modified by providing a second inlet 12 for cold fluid, the two inlets being controlled by separate closure members 22, 23 slidably mounted on the valve spindle 24 and urged towards their seats by a common loading spring 27. Seals 28, 29, 30 of non-uniform diameter and having a telescopic rolling action are provided between the two closure members and also between each closure member and its spindle.
Patent GB-1203374-A (GB)
Title: Switching circuit
IPC: H03F3/72
Filed: 1968-10-15
Abstract: 1,203,374. Electric selectors. CENTRAL DYNAMICS Ltd. 15 Oct., 1968 [26 March, 1968], No. 48769/68. Heading H1L. [Also in Division H3] A switching matrix for video signals uses at each crosspoint a gating circuit which comprises first and second amplifiers 108, 110 differentially arranged, the first receiving the input signal and supplying the output terminal through a further amplifier 118, feedback from the further amplifier to the other input to increase the amplifier input impedance and decrease the circuit output impedance and a further amplifier device 124 providing a constant current to the differential amplifiers and switchable to on and off states so as to switch the gate. A diode 158 may increase the attenuation of the gate when off and capacitors 112 and 120 improve the frequency response.
Patent GB-1373634-A (GB)
Title: Preparation of ammonium and potassium zirconium carbonates
IPC: C09D5/04
Filed: 1971-10-22
Abstract: 1373634 Ammonium or potassium zirconium carbonates MAGNESIUM ELEKTRON Ltd 13 Oct 1972 [22 Oct 1971] 49144/71 Heading C1A An aqueous solution of ammonium or potassium zirconium carbonate is made by reacting zirconium basic carbonate with an aqueous solution or slurry of ammonium or potassium carbonate. In order that the molar ratio of carbonate to Zr in the solution is not greater than 2, the ammonium carbonate solution must contain from 1À0 to 1À5 moles of (NH4)2CO3 per mole of basic (ZrCO3)2 or from 0À8 to 1À3 moles of K2CO3 per mole basic Zr(CO3)2. The reaction may be carried out at temperatures up to 65‹ C. and when making the potassium salt the solution may be evaporated to dryness to produce the solid potassium zirconium carbonate. The solution may be stabilized with tartaric or gluconic acid.
Patent GB-1525476-A (GB)
Title: Podiatric insole
IPC: A43B17/03
Filed: 1975-12-02
Abstract: 1525476 Insoles CURIEL PRODUCTS CORP 2 Dec 1975 [14 Aug 1975] 49394/75 Heading A3B An insole comprises top and bottom generally foot-shaped flexible layers 10 which are joined together along their edges 13 and along lines 15, 16, 17 to form four separate non-communicating cushioning compartments 19, 21, 22, 24 for four corresponding foot areas, each compartment containing a predetermined volume of liquid per unit area. The foot areas corresponding to compartments 19, 21, 22, 24 are the toes, ball, arch and heel respectively. The liquid is water which may contain chemicals or is alcohol and the predetermined volumes may be the same in some or different in all compartments. Values of water weight per unit area of each compartment are stated in the Specification. Layers 10 may be rubber-like or plastics material.
Patent GB-1056030-A (GB)
Title: Wood splitting tool
IPC: B27L7/00
Filed: 1964-12-04
Abstract: 1,056,030. Woodworking. F. C. LEONARD. Dec. 2, 1965 [Dec. 4, 1964], No. 49411/64. Heading B5L. A tool for splitting wood comprises means for supporting a steel tube 1 in a vertical position, the upper end of the tube being flattened in the form of a fish-tail 2, and a cutting member 3 of hardened steel attached to the upper edge of the fishtail so that the cutting edge 4 of the member extends upwardly therefrom and the external surfaces of the cutting member and the fish-tail portion of the tube provide a substantially smooth and unobstructed guide face beneath each side of the cutting edge. The means for supporting the tube may comprise a steel baseplate, legs or a concrete block. The cutting edge may be straight, concave or positively cambered and have end stops to prevent the wood sliding off the end of the edge as it is urged against the edge by a mallet which, when not in use, can be suspended from a hook 5. The cutting member may be welded or detachably connected to the tube. In another embodiment, a pair of short rods 6, 7, Fig. 4 (not shown), are welded to the tube to provide means for breaking long strips of wood across the grain either by hand pressure or striking with a mallet.
Patent GB-1146345-A (GB)
Title: Welded containers of thermoplastic resin
IPC: B29C51/00
Filed: 1966-11-04
Abstract: 1,146,345. Seaming non-metallic sheet material. HAVEG INDUSTRIES Inc. 4 Nov., 1966, No. 49511/66. Heading B5K. [Also in Divisions A5 and B8] A portable container such as a bottle, made from two body parts each of thermoplastic resin welded together, has at least one of the body parts formed from foamed thermoplastic resin and having an integral, non-foamed skin, a part of which lies in the welded area. The two body parts are united by spin welding, which may comprise relative rotary motion or relative reciprocatory motion between the two parts. As shown, a top body part 200 is telescoped within a stationary bottom part 202 and either spun or oscillated to fuse the parts at 216. Alternatively, the bottom part 202 may be moved while the top half is stationary. Each body part 200, 202 has a foamed plastics core 206, 212 with integral non-porous inner and outer skins 204, 208, &c. In one modification, Fig. 2 (not shown), the inner skins 208, &c., are omitted. In another form, Fig. 3 (not shown), the outer skin (238) of one body part is welded directly to another body part (232) of foamed plastics not having a skin either inside or outside. The containers formed may be of circular, rectangular, &c. cross-section. Suitable thermoplastic resins are listed. Reference has been directed by the Comptroller to Specifications 998,180, 1,047,739.
Patent GB-1452754-A (GB)
Title: Load transfer mechanism
IPC: B66C13/20
Filed: 1973-10-24
Abstract: 1452754 Container traffic container transfer mechanism CLARK EQUIPMENT CO 24 Oct 1973 [26 Oct 1972] 49599/73 Heading B8Q A mechanism which may be in the form of a semi-trailer 10 for transferring a container 54 to or from a vehicle such as railcar 56 comprises a base 14 and a main lifting beam 46 movable to either side of the base by hydraulic rams operated by pressure derived from a pump driven by an engine 22. Transverse boom arms 42 at each end of the base are pivoted at 45 at one end to the respective end of the main beam 46 and have main double acting ram actuators 34, 36 pivoted to intermediate joints 39 and auxiliary single acting ram actuators 38 pivoted to the other end at 44. The actuators 38, 40 act only in tension when a load is attached to the beam 46 by hydraulically actuated fasteners 50 which can be adjusted width and lengthwise to accommodate different sized containers. The main actuators 34, 36 may be in the form of two pairs of rams at each end of the base. Hydraulically operated outriggers 58, 59 are provided. Hydraulic circuits are described for the operation of the main actuators, auxiliary actuators, lifting fasteners, and outriggers respectively and include means to ensure a correct sequence of operation. In particular a flow divider is provided to obtain equal movement of the main beam 46 irrespective of whether one or two pairs of main actuators are operated.
Patent GB-1528629-A (GB)
Title: Stylus drivers for printing heads
IPC: B41J2/26
Filed: 1975-12-03
Abstract: 1528629 Selective printing FLORIDA DATA CORP 3 Dec 1975 [4 Dec 1974] 49683/75 Heading B6F Styli 33 in a mosaic printer are each driven by a bimorphic piezoelectric disc 6 whose centre is displaced perpendicular to the plane of the disc, the centre of the disc being connected by a strut 8 to a beam 3 pivotal about one end, the stylus being secured to the other end. The beam pivots about a point defined by crossed flexure members 36, 37 each integral with or fixed to the beam and secured to a support member 4. Each disc 6 may be supported by insulating means 7 on a support housing 2, the housings 2 being stackable as shown. The styli may be hollow needles.
Patent GB-1442284-A (GB)
Title: Method and apparatus for joining thread in an open-end spinning machine
IPC: D01H4/48
Filed: 1974-11-18
Abstract: 1442284 Restarting open end spinning ZINSER TEXTILMASCHINEN GmbH 18 Nov 1974 [16 Nov 1973] 49758/74 Heading DID In an open-end spinning machine during the re-start of spinning the thread G is led around a generally axially facing surface 4' of one of the draw-off rollers 4 and the take up bobbin 10 is maintained stationary, the thread passing through a tension sensor 7 such that as the thread end is entrained by the spinning rotor the increased tension is sensed which initiates rotation of the take up bobbin 10 and hence the thread is drawn into the nip line of the draw off rollers 3, 4. In the deflected position the thread may contact the surface of roller 3 or may be clear of it. The means of controlling the rotation of bobbin 10 is a detent 13 which holds is clear of its traverse friction drive roller 9. Deflection angle α is in the range 10-45.
Patent GB-1452767-A (GB)
Title: Telecommunication circuit arrangements
IPC: H04L5/20
Filed: 1973-10-29
Abstract: 1452767 Data transmission; exchange equipment SIEMENS AG 29 Oct 1973 [16 Jan 1973] 50152/73 Heading H4P In an arrangement for connecting data subscribers to a 4 wire interface in an exchange via 2 wire single current lines, each line-holding resistor is replaced by an automatic current limiter and an RC network provides a current shaping input to an electronic flank steepening circuit. Advantageously the current limiter is divided into two sub-circuits one of which performs the function of the holding resistor and other safeguards against short circuit or peak voltages. Resistors R36, R17 and capacitor C2 form the RC network connected through resistor R15 to a flank steepening circuit which includes transistor T5 operating as an amplifier with a threshold determined by resistors R10-R12. Switching feedback amplifier, forming matching circuit (A), Fig. 2 (not shown), comprises transistors T3, T4, which have a hysteresis characteristic with T1, T2 forming an output switch. Matching circuit (B) is formed by transistor T9 operating as an input switch to T8 hence via R19, R18 keying transistor T7 is operated. RC combination R13, R14, C1 together with diode G2 prevent temporary refractions resulting from charging of connection line as a result of T7 keying. Current limiter (SB1) comprises T10 having base potential maintained by Zener G21 and maximum emitter current maintained by R25, R26; R24 reduces power dissipated by T10. Current limiter (SB2) is similar and comprises transistor T6 with a capacitor C3 and diode G3 to delay the response of the circuit. Diodes G5, G13, G4 protect transistors connected thereto against inverse operation. Automatic line current adjusting circuit ELE is described in Spec fioition 1,353,942 and is connected through diode bridge GB. Polarity reversing relay U is operated from the exchange through input UD. Lightning arresters (not shown) are connected to lines a1, a2 and filters R35, C6, R37, C7 protect the circuit from voltage peaks.
Patent GB-1062269-A (GB)
Title: Improvements in or relating to band-pass filters
IPC: H03H7/21
Filed: 1963-12-19
Abstract: 1,062,269. Band-pass filters. COMPAGNIE FRANCAISE THOMSON-HOUSTONHOTCHKISS BRANDT. Dec. 19, 1963 [Dec. 19, 1962], No. 50179/63. Heading H3U. A band-pass filter having a steep-sided passband characteristic and a substantially linear relation between phase-shift and frequency comprises a plurality of series-resonant circuits 3 1 -3 n  each having substantially the same bandwidth and being successively spaced in frequency by the amount of said bandwidth and each being connected in series with a respective phase-shift network 4 1 -4 n , the phaseshifts introduced thereby successively increasing by #/2, the series combinations of resonant circuit and phase-shift network being all connected in parallel between input and output distribution networks 2 and 5.