baber/WOPTO huggingface dataset:
Patent GB-619440-A (GB)
Title: Improvements in or relating to new and improved methods of producing electro-forms
IPC: B41C3/08
Filed: 1946-12-10
Abstract: A moulding for use in the production of electroforms is made from vulcanized rubber or synthetic rubber compositions of ebonite or vulcanite which have a softening or yield temperature below 100 DEG C.  In a method of making an electro-form a sheet of ebonite having a yield temperature between 40 DEG  C. and 45 DEG  C, is moulded against an engraved block at 70 DEG  C. and then cooled to 25 DEG  C. to 30 DEG  C.  The pressure is then released and the moulding is given a film of metallic silver by methods described in Specification 596,732, [Group XVI].  The electro-form made by electro-deposition can be separated from the moulding by immersion for 30 seconds in water at 90 DEG  C.
Patent GB-434482-A (GB)
Title: Improvements in or relating to automatically variable power transmission mechanism
IPC: F16H33/18
Filed: 1933-12-29
Abstract: 434,482. Variable - speed gearing. HOBBS, H. F., 58, Lillington Road, Leaming- ton Spa. Dec. 29, 1933, No. 36604. [Class 80 (ii)] Relates to automatically-variable gearing suitable for vehicles of a kind comprising eccentric planetary weights A carried by a driving-member K and geared to a driven shaft G which is prevented from rotating except in one desired direction. Each of the weights A is made at least three times as long as its greatest radial dimension from the centre of the axle a a of the associated planet pinion D: The pinions D mesh with a common gear E on the shaft G. Specification 358,732 shows an example of gearing of the said kind with a spring transmission additional. There is preferably such a spring transmission beyond the one-way shaft G. Specification 435,988 also is referred to.
Patent GB-1042490-A (GB)
Title: Phenoxyalkylaminoguanidines
Inventor: AUGSTEIN JOACHIM
IPC: C07C281/16
Filed: 1964-09-08
Abstract: Novel compounds of the Formula I wherein R1 and R2 each represent a hydrogen or halogen atom, -CnH2nrepresents a straight or branched chain-alkylene radical, n representing an integer from 2 to 4, and pharmaceutically acceptable acid addition-salts thereof, are prepared by reacting a compound of the Formula II with cyanogen bromide and reacting the cyanohydrazine of the Formula III with ammonia. <FORM:1042490/C2/1> <FORM:1042490/C2/2> <FORM:1042490/C2/3> The o-nitrobenzylidene derivatives of N-[2-(2,6 - dichlorophenoxy)ethyl] - N - cyanohydrazine; di - (N - amino - N - [2 - (2,6 - dichlorophenoxy)ethyl]guanidine and di - (N - amino - N - [2 - (2,4 - dichlorophenoxy)ethyl]guanidine are described.  Therapeutic compositions with anti-hypertensive properties in the form of tablets, cap sules, elixirs, suspensions and solutions for oral and parenteral application, comprise compounds of the Formula I together with a pharmaceutical carrier.
Patent GB-1009110-A (GB)
Title: Refrigerator door gasket
IPC: F25D23/08
Filed: 1962-09-28
Abstract: 1,009,110. Door gaskets. H. O. CANFIELD CO. Sept. 28, 1962 [Oct. 10, 1961], No. 36922/62 Heading E1J. A refrigerator door gasket, of extruded flexible plastics or rubber material comprises an L-shaped leg for fastening to the door, a flat base portion with a downwardly-facing lipped edge, two relatively thin, L-shaped outer wall portions 316, a relatively thick central wall portion 26b, forked into two thinner wall portions 27, joining the tops of the wall portions 31b, and a curved, relatively thin, sealing portion 28.
Patent GB-1282018-A (GB)
Title: Electrophotography
IPC: G03G5/12
Filed: 1969-07-23
Abstract: 1282018 Electro-photographic colour process CANON K K 23 July 1969 [23 July 1968] 36973/69 Heading G2H Electro-photographic plate p comprising base 10, photo-conductive layer 9 and transparent insulative layer 8, after charging using a corona device 6, is exposed to a selected colour image of a multi-colour original 1 (e.g. through a filter 4) and then a discharge (A.C. or of reverse polarity) is applied simultaneously as the plate is exposed to an image of the remaining colours (e.g. through a minus filter 5), leaving a charge image on the surface, the contrast of which may be increased by a uniform exposure before developing, using toner, of the selected colour, and transferring to a copy sheet. By this means the selected colour component is extracted from a multi-colour original and by repeated application of the method a multi-colour copy may be obtained. A four layer plate p<SP>1</SP> Fig. 3 (not shown) may be used having an additional insulative or semiconductive layer in between the metal base and the photo-conductive layer. Corona devices 6 and 7 may be separate or joined Figs.6 and 7 (not shown) and preferably the filters 4 and 5 are attached to them.
Patent GB-1187220-A (GB)
Title: Improvements in or relating to Metal Melting and Casting or Storing
Inventor: TAYLOR LEONARD SAMUEL
IPC: C21C7/10
Filed: 1967-08-11
Abstract: 1,187,220. Casting-machines. G. L. WILLAN Ltd. 7 Nov., 1968 [11 Aug., 1967], No. 36980/67. Heading B3F. [Also in Division F4] A launder 3 incorporating a refractory nozzle 6 closed by a stopper 8 operated by a mechanism 9 is attached to and tiltable with an induction melting furnace 1 about an axis 20 from a non- operative vertical position to a horizontal pouring position, Fig. 3, wherein molten metal is discharged into a mould 22 positioned within a container 23 in a receptacle 24 engaged with the launder 3 through a seal 33. The container 23 is raised by a screw 28 so that the mould engages a refractory sealing gasket 31 surrounding the nose of the nozzle 6. Prior to pouring, the receptacle 24 is evacuated through an outlet 36 with a shut-off valve 37. The mould receptacle 24 is carried by a fork lift trolley 25. In an alternative arrangement, the induction furnace is replaced by an electric arc furnace (38) which pours into an ingot mould (49) in an evacuated receptacle (50).
Patent GB-862819-A (GB)
Title: Spray nozzles
Inventor: DORMAN ARTHUR KENNEDY
IPC: B05B1/12
Filed: 1957-11-28
Abstract: 862,819. Nozzles. DORMAN SPRAYER CO. Ltd. Nov. 17, 1958 [Nov. 28, 1957], No. 37115/57. Class 69 (3). A spray nozzle, e.g. for spraying insecticides and weed killers at low pressure, comprises a disc 4 having passages 5 extending in the axial direction and slots 6 tangential to a frusto-conical chamber 2 in a disc 1, the discs being mounted on a body 7 by a retaining nut 8. The disc 4 is interchangeable with others having different size passages and slots and the discs 1 and 4 may be other than circular. One of the two discs may be of larger size than the other and formed with a recess which accommodates at least partially the other disc. The Provisional Specification also describes an arrangement wherein the disc with the frusto-conical chamber has two slots leading tangentially from the chamber to an annular groove in an inner disc furnished with axially-extending feed passages, the outer disc in this case being exchangeable with other discs having different sized slots.
Patent GB-944797-A (GB)
Title: Improvements relating to electric driving arrangements
IPC: H02P29/00
Filed: 1962-10-01
Abstract: 944,797. Clutch control. O. B. SCHWAB, [trading as FRANKL & KIRCHNER]. Oct. 1, 1962 [Oct. 14, 1961], No. 37175/62. Heading F2L. [Also in Division D1] A driving arrangement comprising a continuously running motor with means for arresting the drive at a predetermined position, particularly for stopping the needle of a sewing- machine at the upper or lower dead centre position, includes an electrically controllable clutch between the motor and driven member and a brake brought into action after release of the clutch, the arresting means being controllable through one or more transistors. In the arrangement shown, magnet windings MK, MB for the clutch and brake are controlled by switching transistors T 3 , T 1  respectively. Transistor T 3  receives a control voltage at its base B 3  through a potentiometer P 1  which may be incorporated in a foot-actuated switch and has an end contact 7 which when opened deenergizes the transistor. Transistor T 1  receives a control voltage at its base B 1  through a synchronizing device S, consisting of a photoelectric cell controlled by a light beam and rendered conductive only when the beam is directed on the cell by a mirror mounted on the needle bar as a dead centre position is reached. Operation.-Actuation of the foot control deenergizes transistor T 3  and clutch winding MK, and at the same time brake winding MB is energized through transistor T 1  to brake the drive, normally bringing the machine to rest within one revolution. After an adequate period for this the brake is automatically released and subjected to control of the synchronizer S to re-establish the drive through the clutch. When the needle bar reaches a dead centre position device S re-energizes the brake through transistor T 1  and thereby effects final arrest of the drive in the correct position. The timing of the stopping operation is ensured by relays Re 1 , Re 2  and a capacitor C, charged through a resistance R 1  and discharged through a variable resistance P 2 . For this purpose three pairs of contacts 1-2, 3-4, 5-6 are connected to the foot-operated switch, these contacts being normally open and only closed when potentiometer P 1  reaches its end position to open contact 7 and thus de-energize transistor T 3  and clutch winding MK. A further transistor T 2  associated with capacitor C is rendered conductive or non-conductive by the charging and discharging of the capacitor to operate the relays which respectively control pairs of contacts 8-9, 10-11 for synchronizer S, and contacts 12-13, 14-15 controlling the potentiometer end contact 7, transistor T 3  and clutch winding MK.
Patent GB-983375-A (GB)
Title: Process for preparing dodecandioic acid
IPC: C07C51/31
Filed: 1962-10-01
Abstract: Dodecanoic acid is prepared by oxidizing cyclododecane with a mixture of mono- and di-meric nitrogen dioxide. Oxygen may be present, and an increase in the monomeric concentration increases the reaction rate and an increase in the dimeric concentration increases the yield. Catalysts comprising vanadium compounds such as ammonium metavanadate with silica gel may be present.  The acid is separated by precipitation on adding an organic solvent, e.g. petroleum ether, ligroin, chloroform or carbon tetrachloride to the reaction product or alternatively the reaction may be carried out in solvents such as chloroform and carbon tetrachloride.
Patent GB-1059733-A (GB)
Title: Electrical resistance heater
Inventor: PILBEAM FRANK ALBERT
IPC: H05B3/26
Filed: 1962-10-01
Abstract: An electrical resistance heater applied to a support 11 (Fig. 3 not shown), comprises:- an insulating layer 12 of 96% aluminium oxide and 4% chromium oxide, a layer 13 of chromium oxide to fill pores in the layer 12, a resistive layer 14, e.g. of nickel chrome alloy to which connection is made at 22, a further insulating layer 15 similar to 12, and a moisture sealing layer 16 of silicone resin, which penetrates layer 15 to some extent. All the layers are applied by spraying, either by the plasma or the flame process.  The support 11, may first be grit blasted, and if of light alloy a primary layer of molybdenum or 80:20 nickel chrome alloy may be applied to assist adhesion of layer 12.  A number of uses for the heater are given, including aircraft de-icing, for vacuum processes and for heating press plattens.
Patent GB-1272965-A (GB)
Title: Data display
Inventor: HAUSE ARTHUR DICKSON
IPC: G06F3/033
Filed: 1969-07-24
Abstract: 1,272,965. Cathode-ray tube displays. WESTERN ELECTRIC CO. Inc. 24 July, 1969 [29 July, 1968], No. 37215/68. Heading H4T. Graphical data elements having predetermined interrelationships are displayed on the screen of a cathode-ray tube under the control of data words (code signals) which are so formatted that selection of particular data elements by a lightpen connected to logic control circuitry results in the selected data elements and the data elements related thereto to be displayed with increased light intensity. The invention is described in connection with the display of the sales organization of a commercial company (Fig. 3) the actual command chain of which is as shown in Fig. 2 and the (binary) signal data words which control known character generating means to cause the display tube to display the various names are so formatted that by use of the light-pen the relationships shown in Fig. 2 may be indicated on the display tube screen by an increase in brightness of particular names. Also the value of sales effected by individuals alone and in the case of those of supervisor level and above, by themselves and these under their command may also be indicated. Thus, by selecting "Supervisor" and "level" (Fig. 9) by the light-pen the names of the four supervisors are brightened and by selecting "Salesman" and a particular name KERN, R, F (Fig. 5) the value of this salesman's sales is indicated under the Sales Volume. Also by selecting "Area Manager" and a particular area  manager, KERN, R, F, (Fig. 6) the value of the sales effected by this manager and all of those under this command is indicated. Examples of various data words are discussed with reference to Figs. 7A ... 7F (not shown) and the logic circuitry associated with the display and light-pen control is described with reference to Figs. 9A, 9B (not shown). The data is made available in a circulating memory 10 (Fig. 1) which may be associated with a plurality of display devices.
Patent GB-778632-A (GB)
Title: Improvements in dynamo-electric machines
Inventor: MAGGS ARTHUR HEMBOROUGH
IPC: H02K19/30
Filed: 1954-12-23
Abstract: 778,632. A.C. generators. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 30, 1955 [Dec. 23, 1954], No. 37260/54. Addition to 731,581. Class 35. In an A.C. generator having a rotating armature carrying a commutated D.C. winding 24 for self-excitation as described in the parent Specification, the main field winding fed from main brushes 36, 37 is divided into concentric distributed windings 5, 6, 7 of different span. The rotor teeth embraced by the inner coils 6, 7 are saturated, while the remaining pole-arc embraced by the outer coil 5 is unsaturated, this coil being shunted by a rheostat 16 to control the output of the machine. The main field current also passes through a quadrature compensating winding 40 as described in the parent Specification. A compound winding 41 concentric with the main field winding and fed by quadrature brushes 38, 39, which are naturally sensitive to armature flux displacement, serves to compensate the voltage regulation normally produced at unity and lagging power-factors. Double-frequency flux pulsation is suppressed by damping winding 42. The separate compound winding 41 may be dispensed with by dividing the main field winding into two halves and interposing the quadrature D.C. circuit between them. Specification 754,769 is referred to.
Patent GB-881649-A (GB)
Title: Process for the production of monofilamentary yarn products
Inventor: FAIRCLOTH CHARLES RAYMOND
IPC: D01H1/00
Filed: 1959-11-03
Abstract: 881,649. Spinning yarns. DOW CHEMICAL CO. Nov. 3, 1959, No. 37287/59. Drawings to Specification. Class 120(3) In the production of monofilamentary yarn by twisting ribbons, tapes or strips of flat films of normally crystalline copolymers of vinylidene chloride, e.g. containing at least 70% by weight of vinylidene chloride with vinyl chloride and/or acrylonitrile, one of the wider sides of the ribbon &c. is heated instantaneously, e.g. by passage over an electrically heated cylinder, pipe or bar, to a temperature 15‹-40‹C. below the softening temperature of the copolymer for a duration of 0À003-0À05 seconds. The ribbon &c. is then twisted, as on a conventional ring- twisting frame, to 1-30 turns per inch and in such manner that the preheated side of the ribbon &c. lies on the inside of the yarn structure.
Patent GB-904170-A (GB)
Title: Improvements in or relating to universal joints
Inventor: CLARK KENNETH JOHN BENJAMIN
IPC: F16D3/28
Filed: 1958-11-19
Abstract: 904,170. Universal Joints. METALASTIK Ltd. April 22, 1959 [Nov. 19, 1958], No. 37290/58. Class 80 (2). [Also in Group XXV] In a Hooke's type universal joint each arm 13 of the spider 11 is mounted in a resilient bush 15 in a cup-shaped housing 14, which housings are retained by a circlip 17 in apertures in the forked ends of the coupled shafts 6, 9. The arms 13 may be coned, as shown, or cylindrical, and the ends of the arms may have part-spherical heads, the bushes 15 and housings 14 being correspondingly shaped in each case. Recesses 19 in the ends of the bushes 15 and holes 20 in the housings 14 aligned with the recesses permit axial compression of the bushes which may be adjusted by introducing shim between the circlips and forks, without overstraining the ends of the housings. The bushes 15 may, as shown, be a single member or may comprise a separate end part 18 and side part 18a. The bushes 15 may be bonded to the arms 13 or may be lined with a bearing cup of polytetrafluoroethylene or polytrichlorofluoroethylene in which the arms are free to turn.
Patent GB-1056263-A (GB)
Title: Filtration units
IPC: B01D29/21
Filed: 1962-10-02
Abstract: A support body for a filtering medium consists, in one embodiment, of several, (e.g. 18), longitudinal fin-forming pieces 5, Fig. 2 (not shown), each with dovetail 6 and groove 7 formed in a slightly-arcuate root portion, assembled together, the resulting body being tubular, with outwardly-directed fins each having a radial length preferably approximately equal to the internal diameter of the tube thus formed.  Each piece 5 has a rib or like system on its outer surface, preferably in the form of a number of spaced parallel main ribs 8 perpendicular to the axis and extending without interruption over the fin surface (to form endless ribs of the assembled body); each main rib is intersected by several shorter ribs 9 parallel to the axis.  Each piece 5 has grooves 10 in the sides of its root portion at intervals along its length, the registering grooves of neighbouring pieces forming ports for radial flow.  In another embodiment, Figs. 4 to 7, (not shown), the body is formed by annular outwardly-finned pieces which are stacked axially, teeth 14 on any one piece engaging recesses 15 on an adjacent piece.  The rib system and the formation of ports are almost identical with those of the first embodiment.  In a modification, Figs. 8 and 9 (not shown), the annular pieces are modified but not significantly, and in Fig. 9 is depicted an upper end cap 3 having a downwardly-directed hub extension to close off the upper ports of the end annular piece.  In the above cases the body is preferably covered by a paper or wire mesh element which follows the contours of the fins and has its longitudinal edges joined and accommodated in a groove in one fin. Flow is preferably inward; for outward flow, the sheet may be held in place by several surrounding rings shaped to conform to the fins. The filter is used preferably for filtering kerosene, but lubricating oil or gas may be filtered.  For separating water from fuel oil, fibre glass may be laid between the fins of the filter unit, or one or more layers of it may be applied, sandwiched between inner and outer liquid permeable sheets, to the support body.  In the above cases the support body may have the fins directed radially inwardly, especially for outward flow, or when fibre glass packing between the fins is required.  Nonfinned spacer pieces may be needed for this form of the body.  The finned support body may be flat; or several such bodies may be arranged in layers with interposed filtering medium.
Patent GB-1260311-A (GB)
Title: Wrenches
Inventor: COUGHTRIE THOMAS ROBB
IPC: B25B7/12
Filed: 1968-08-06
Abstract: 1,260,311. Wrenches. T. R. COUGHTRIE. 4 Aug., 1969 [6 Aug., 1968], No. 37433/68. Heading B4W. [Also in Division B3] In a hand wrench wherein jaws 12, 13 are respectively mounted on, and operatively connected to, handle portions 10, 16, one pair 12 is resistance welded to the handle portion 10 and at least said one of said jaws is of sintered material, for example a sintered ferrous material such as nickel steel. The handle portion 10 is first drilled at the point to be welded prior to the resistance welding operation.
Patent GB-1501658-A (GB)
Title: Voltage stabilizers
IPC: H02M3/337
Filed: 1975-09-11
Abstract: 1501658 Automatic voltage control NIXDORF COMPUTER AG 11 Sept 1975 [13 Sept 1974 17 July 1975] 37446/75 Heading G3R A voltage stabilizer circuit includes D.C. input terminals across which are connected a regulating element, an inductor and an inverter circuit in series. A diode is connected across the inductor and the inverter circuit, poled to conduct voltage induced in the inductor when current flow is turned off. The inverter circuit is connected through a rectifier producing a D.C. output voltage which is sensed and compared with a reference voltage to form a signal which controls the regulating element. As shown, a D.C. source GI is connected across a transistor TI, inductor L and drive circuit Ts including a push-pull transformer Uel and parallel transistors T2, T3 driven by a control circuit St. The drive circuit Ts comprises an inverter and rectifier producing a D.C. voltage at terminals a1, a2 which is compared with a reference voltage U1 in an amplifier VG which controls the transistor T1. When one of the transistors T2, T3 is turned off, damage to the inverter circuit by the voltage induced in the inductor L is prevented by a shunt path provided by a diode D2 and RC circuit R, C1. Similarly, a diode D1 protects the transistor T1. In a second embodiment, Fig. 2 (not shown), the transistors T2, T3 are replaced by a four transistor bridge circuit with a transformer winding connected across it. In either of these embodiments, diode D2, resistor R and capacitor C1 may be omitted if the transistors have overlapping turnon times. Other embodiments, Figs. 3 and 4 (not shown), use the drive circuit of Fig. 1, but additional components are connected in circuit with the diode D2 to reduce power losses. A separate winding on the transformer Uel may be used to sense the output voltage before rectification.
Patent GB-1316732-A (GB)
Title: Light concrete
IPC: C04B20/10
Filed: 1971-08-10
Abstract: 1316732 Lightweight concrete SUDDEUTSCHE KALKSTICKSTOFF - WERKE AG 10 Aug 1971 [7 Oct 1970] 37508/71 Heading ClH A concrete comprises a light aggregate of at least one of clay, pumice, slags, perlite, vermiculite and polystyrene in expanded or foamed form, which has been treated with an aqueous solution of a So 3  containing melamine-formaldehyde condensate, and cement. Sand is optional, and is up to 0À3 mm. in size.