baber/WOPTO huggingface dataset:
Patent GB-962932-A (GB)
Title: Method and apparatus for electrolytic production of printed circuits
IPC: C25F3/02
Filed: 1962-06-05
Abstract: 962,932. Making printed circuits, electrolytically. S. L. MAROSI. June 5, 1962 [June 9, 1961; May 31, 1962], No. 21610/62. Heading C7B. Printed circuits are made by forming a metal master with insulation inserted in the surface to form the required pattern, placing a metalclad insulated layer as work sheet in close proximity to the master, leaving a very small gap, e.g. 0À005 inch, through which electrolyte is forced, and applying a voltage, the work sheet being the anode, and the master the cathode. The metal on the work sheet corresponding to the metal pattern on the master is dissolved down to the insulating backing. Preferably the master is in the form of a rotating cylinder beneath which the work sheets are fed and are carried in synchrony with the master roll. A master in cylindrical form 11, Fig. 1, is mounted slightly above a work sheet 13 and gripped at the edges by bands 33, the thickness of which determine the gap. The work sheet is gripped by a clamp 28 mounted on carrier rails 17, 18 and is moved under the master cylinder by a lead screw 20 operated by an electric motor 21, and the master and work sheet are progressed together by bands 52 . . . 55 one end of each of which is fastened to the cylinder and the other to the carrier. The electrolyte is supplied through a pipe 35, Fig. 3, and channel 39 to the gap 40 between master and workpiece, and fills the entire exposed surface between side flaps 36, 41. The used electrolyte flows down the bed 12 to a deplating tank 50 where the dissolved metal is plated out and the electrolyte regenerated. Alternatively, the copper is removed by passing the solution through a bed of a suitable ion exchange resin from which the copper values are recovered by treatment with HNO 3 . As etching electrolyte there may be used solutions of mineral acids, or alkalis, preferably with added chelating agents, e.g. sodium tartrate, diethylene penta-acetate, dihydroxy ethyl glycerate, or E.D.T.A. A range of examples is given. The work sheet may consist of fibre glass-epoxy resin laminate, or paper-phenolic resin laminate, coated with Cu, Al, or Ni. The apparatus may be operated automatically by electrical circuitry (described in detail), by which the roll 10 rotates at a speed regulated by the time required to fully deplate the pattern in accordance with an electrical sensing unit, operated by a decrease in current. The sensing unit also governs motor speed, individual motions required and the flow of electrolyte.
Patent GB-442655-A (GB)
Title: Improvements in and relating to hose reels
IPC: B65H75/38
Filed: 1935-07-30
Abstract: 442,655. Hose reels. CRAIG, J. A., 900, Washington Street, Peekskill, New York, U.S.A. July 30, 1935, No. 21663. [Class 99 (ii)] A hose reel comprises a pair of end flanges, having circular rims 2 integrally connected by spokes 1 to offset hubs 3 located slidably on a hollow shaft 5, and a number of hose rungs 16 transversely mounted one between each opposed pair of spokes, the construction being such that the reel is capable of increasing its capacity, both laterally and circumferentially, when the hose 14 is distended by water from a valve-controlled pipe 9. The hollow shaft 5 is rotatably coupled at 7 to an elbow 8 on the supply pipe 9, and it is provided with a branch 12, having a union 13, for conveying water to the hose. As shown, the rungs 16 are normally retained in their extreme radial position by curved springs 19 riveted to the rungs at 24 and to the spokes 1 at 23, the said spokes being formed with channels 17 to receive the reduced ends 18 of the rungs, and the end flanges are retained a minimum distance apart by coiled springs 21. The hubs 3 are cut away at 4 to receive the shaft branch 12, and outward axial movement of the hubs is limited by a stop cap 6 and the coupling 7. In a modification, the hose rungs are constituted by pairs of pivoted toggle links.
Patent GB-1208434-A (GB)
Title: Apparatus for making yarns of artificial polymeric material
Inventor: WILLIAMS ROY ALAN
IPC: D02G3/26
Filed: 1967-05-10
Abstract: 1,208,434. Spuming. IMPERIAL CHEMICAL INDUSTRIES Ltd. 6 May, 1968 [10 May, 1967], No. 21671/67. Addition to 1,102,095. Heading D1F. The apparatus is as described in Specification No. 1,102,095 and is modified in that the body 4 that is arranged to rotate with a peripheral speed sufficiently high to apply tension to the filament(s) 2 and to assembly the filament(s) around its surface in the form of a sleeve possesses a discontinuous or irregular surface structure. The body preferably possesses an overall taper from one end to the other, which taper may vary between the ends of the body. The body is preferably essentially conical when viewed at right angles to its axis, but may be hemispherical, parabolic, hyperbolic or logarithmic. The surface may have an essentially echelon structure or be provided with rifts, indentations, nodular projections or teeth.
Patent GB-642418-A (GB)
Title: Improvements relating to variable attenuators for high frequency currents
IPC: H01P1/22
Filed: 1947-08-08
Abstract: 642,418. High-frequency attenuators. POLYTECHNIC INSTITUTE OF BROOKLYN. Aug. 8, 1947, No. 21848. Convention date, June 21, 1945. [Class 40 (viii)] A variable attenuator comprises a transmission conductor 2 having an attenuator section of relatively high resistance and a conductive sleeve surrounding the conductor and slidable thereon to shunt a variable portion of the attenuator section. In the arrangement shown, the attenuator section consists of an insulating support on which a metallic film is deposited. This film may be divided into sections. Section d-e is thin and comprises the attenuating portion. Section b-c is thicker and forms an impedance transformer section to match the attenuator to the line. Sections a-b and c-d are much thicker and act merely as conductors on which the sleeve may slide. The latter consists of a metal section 4 and an insulating section 5 which carries a film to form a matching section equivalent to b-c. The sleeve is broad enough to span the attenuator section and shunt it completely. It is moved by an arm 6 connected to a rack 7 engaging with a hand-operated gear-wheel 9. By placing the attenuator at a right-angle bend in a coaxial line the sleeve may project out of the end of its length of line and be adjusted without the necessity for arm 6 passing through the outer conductor. Specification 579,073 is referred to.
Patent GB-727063-A (GB)
Title: Improvements in or relating to weighing machines
IPC: G01G13/08
Filed: 1952-08-30
Abstract: 727,063. Filling-machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., LOVETT, A. E., WALLER, M. SALWAY-, and FORMAN, A. W. Aug. 31, 1953 [Aug. 30, 1952], No. 21855/52. Class 94 (1). [Also in Groups XVIII and XXX] In a machine for filling cartons with a predetermined weight of tacks, a conveyer belt 149 is intermittently actuated (see Group XXX) to position cartons 26 in turn under a shoot 28. Each carton receives the desired weight of tacks down shoot 28 from an automatic feed weighing machine (see Group XVIII). The cartons are finally moved off the conveyer belt onto a table 152. The operation of contacts by the balance beam completes the circuit of a solenoid provided an empty carton 26, is positioned immediately under the delivery shoot 28 thus closing contacts 214. The solenoid actuates a bell-crank lever to withdraw a stop and allow the weigh-pan to rotate under the weight of tacks and empty into shoot 28. The cartons are held on the conveyer belt by lugs 146, Fig. 9.
Patent GB-517305-A (GB)
Title: Improvements in or relating to the manufacture of bricks or the like
IPC: B28B11/08
Filed: 1938-07-23
Abstract: 517,305. Marking and sanding bricks. PRIESTLEY, B., CREIGHTON, F., and CREIGHTON, W. July 23, 1938, Nos. 21947 and 21948. [Class 87 (ii)] In machines for sanding, marking, or rusticating bricks or an extruded clay strip, the four surfaces around the bricks or strip are acted upon simultaneously by four pressure rollers having stationary axes of rotation and so located that their pressure lines are in the same plane, the rollers acting to press sand or markings or both into the surfaces of the bricks &c. In the form shown in Fig. 1, the bricks travel on an endless belt 1 that is supported on rollers and is fed with sand, mortar, slurry &c. from a hopper 2. The upper faces .and ends of the bricks are covered with sand &c. from a hopper 17 having an adjustable opening through which the bricks pass: The sand is pressed into the surfaces of the bricks by vertical and horizontal rollers 6, 7, 8, arranged with their contact or pressure lines in the same plane. The belt 1 and the rollers 6, 7 are provided with patterns by surfacing them with crepe rubber &c. Endless belts surfaced with crepe rubber &c. may be used in conjunction with the rollers 6, 7. The bricks may be treated successively by sets of rollers, e.g., having different diameters to produce a long pattern on the succession of bricks. The hopper may have a deflecting member to remove surplus sand &c. from the upper surfaces and cause it to fall into adjustable troughs for sanding the ends of the bricks.
Patent GB-858049-A (GB)
Title: Sound absorbing panels
Inventor: HOPKINS LEONARD FRANK
IPC: G10K11/16
Filed: 1956-07-16
Abstract: 858,049. Building units. BOWATER RESEARCH & DEVELOPMENT CO. Ltd. July 15, 1957 [July 16, 1956], No. 21976/56. Class 87(1) [Also in Group VIII] A sound-absorbing panel for walls and ceilings includes a region, in which sound is absorbed, constituted wholly or partly by a mass of fibrous material, perforations in a face of the panel leading to said region, the perforations being bridged by material forming diaphragms, spaced from the region in which sound is absorbed, which diaphragms will transmit incident sound to said region. The material forming the diaphragms is preferably in the form of an air-impermeable, non-porous and non-perforated, sheet covering the exposed surface of the element. As shown, a facing sheet 1 comprising a plastic film of vinyl chloride-acetate copolymer or polythene laminated to or coated onto a sheet of kraft or other paper is adhesively secured to a sheet 2 of e.g. hardboard, asbestos cement or metal, the plastic film being uppermost. The sheet 2 has perforations 3 in it which are bridged by the facing 1 which thereby forms diaphragms 4. These perforations lead to a sound absorbing region 5 containing a glass fibre mat 6. A sheet 7 of kraft paper provides a backing to the glass fibre mat 6 which is in turn held within a wooden framework 8. The adhesive used to secure the sheet 1 may be applied all over it, or the diaphragm areas may be kept free of adhesive. In Figs. 2 and 3 (not shown) the absorbing region comprises a fibreboard with cavities therein, and the sheet 2 is omitted. The cavities may have glass fibre wadding in their interior, or may have loose fibres on their surfaces. The cavities may be of larger crosssection than the perforations leading to them. The facing layer forming the diaphragms may be printed to provide an ornamental surface. The sizes of the cavities and diaphragms may vary over the board.
Patent GB-204185-A (GB)
Title: Improvements in or relating to transformer arrangements particularly adapted for high frequency telephony systems
IPC: H04B1/58
Filed: 1922-08-12
Abstract: 204,185. Western Electric Co., Ltd., (Western Electric Co., Inc.). Aug. 12, 1922. Relaying or repeating systems; wired wireless systems.-A double transformer arrangement used in a high-frequency telephony system forconnecting a single circuit carrying signalling currents in both directions to a pair of circuits in which signalling currents flow in one direction along one circuit and in the opposite direction in the other circuit; is characterized by the feature that the transformer arrangement acts also as a wave-filter. The incoming two-way single line L' is connected to the coils 2, 1 and 5, 6. The input side B of the four-wire circuit is joined to the coils 4, 3 and 8, 7, whilst the output side D is bridged by the coils 4, 3 and 8, 7. The main signalling currents flow in the directions indicated' by the full-line arrows. A balancing network N' is connected to coils 6, 5 and 2, 7. Series condensers 20 - - 23 are inserted across the inner ends of the coils contained in each of the circuits, and serve in conjunction with the inductance coils to form either a high-pass or low-pass filter, thus rendering unnecessary the use of excluding filters for undesired frequencies in either the line L<1> or the network N'. The impedance of the circuits are so balanced that no undesirable transfer of energy takes place between the input group D and output group B of the four-wire circuit, so that " singing " is prevented in that circuit. The four upper coils shown in the Figure are wound upon one core of the double transformer whilst the four lower coils are wound upon a second core. The induced and balanced potentials are indicated by the dotted-line arrows.
Patent GB-1520243-A (GB)
Title: Quenching of molten slag
IPC: F23J9/00
Filed: 1977-05-25
Abstract: 1520243 Quenching slag UNION CARBIDE CORP 25 May 1977 [26 May 1976] 22019/77 Heading C7X Molten residue from a furnace hearth 101 is quenched by passing down a slag shoot 106 into a quench tank 119 containing water at a temperature sufficient to prevent slag explosions, removing hot water and/or steam from the slag duct and replacing it with cooler fluid e.g. by removing and condensing steam from the slag duct and recycling the condensate to the slag duct, spraying water from a cooler part of the quench tank through spray ring 126 while removing steam from the slag duct or pumping water direct from a cooler part of the quench tank to the slag duct to dispel hot water therefrom Fig. 4.
Patent GB-771281-A (GB)
Title: Vehicle
IPC: B62D31/00
Filed: 1955-07-29
Abstract: 771,281. Vehicle bodies. LA TRAMERYE R. DE, and HERBERT, J. July 29, 1955 [Aug. 19 1954] No. 22037/55. Class 108(1). A vehicle has a forward body part 1 mounted on a frame 4 provided with driven road wheels 6, and a rearward part 2 rotatable about an axis 3 into a vertical position to facilitate parking, by means of arcuate rack 14, pinion 15, sprocket wheel 19 and chain drives 21, 25 from a rack 29 forming part of a hydraulic jack. Before the part 2 is erected the jack 41 is actuated to rotate the crank 38 about its pivot 39 to bring the ground wheels 37 into position at the same time withdrawing the rod 43 from locking engagement with the recess 47 provided in the frame 48 of the part 2. When the part 2 is erected the vehicle may be turned about a vertical axis by actuating the jack 56 which causes the spider 51 to engage the ground and lift the wheels 6 and 37 thus enabling the vehicle to rotate about the rod 54 under the action of an electric motor or hydraulic jack. The body may be in a single unit rotatable about horizontal pivots carried by the frame 4 and four retractible wheels which may be driven may be used to facilitate manipulation of the vehicle when erected.
Patent GB-306364-A (GB)
Title: Improvements in or relating to pivot mountings for swinging doors, covers, windows and the like
IPC: E05D15/00
Filed: 1928-07-31
Abstract: 306,364. Elliott & Sons (Reading), Ltd., S., and Stott, A. H. July 31, 1928. Double and multiple hinges. -Pivotallymounted doors, windows and like members a, more particularly for showcases and bookcases, are movable upon roller pivots b coacting with channel guides c having each a downwardly inclined rear end f, a front stop e, and radius rods h, these rods being subject to elastic or resilient influence at one or both ends to ensure full or positive closure and to check the closing movements of the member. As shown, the member a is the door of a showcase, and the resilient means comprise coiled springs k mounted upon one or both pivots of the radius rods that are secured to the door and to the sides of the showcase. To open a door, it is lifted and the rollers forced along the guides c until the door rests in an horizontal position wholly within the case. The application to doors movable into a vertical plane when open is referred to.
Patent GB-219826-A (GB)
Title: Improvements in and relating to holders for thermionic valves
IPC: H01R33/76
Filed: 1923-09-04
Abstract: 219,826. Welch, A. P. Sept. 4, 1923. Receiving sets, construction of.-A thermionic valve holder A is adapted for mounting on the underside of a panel C or frame, and the sockets are flush with, or, as shown, below the rear face of the panel; the holder may be secured to the panel bv screws E. The valve pins are inserted through holes D in the panel.
Patent GB-993717-A (GB)
Title: Improvements in or relating to heavy metal carbides
Inventor: BEL ALAIN
IPC: C04B35/51
Filed: 1962-06-08
Abstract: In a process of sintering the carbides of the actinide group i.e. Pu, U, Th, the carbide powder, preferably finer than 35m , is mixed with Fe, Co or Ni powder e.g. 0.2-1% by weight, cold compacted and sintered under vacuum at 1400-1550  DEG C. 1-2% of a binder such as naphthalene or a paraffin may be included. Compaction is at 3-5 metric tons/ sq.cm. by pressing, drawing or isostatic pressing. Sintering time is about 4 hours and a slow cooling rate is preferable.
Patent GB-1279586-A (GB)
Title: Process for the continuous preparation of dichloropropanols
IPC: C07C31/36
Filed: 1971-04-19
Abstract: 1279586 Dichloropropanols FARBWERKE HOECHST AG 19 April 1971 [20 Feb 1970] 22261/71 Heading C2C A dichloropropanol mixture is produced by reacting allyl alcohol with chlorine in the presence of an ether having a boiling-point at atmospheric pressure of below 170 C. and which is saturated with HC1. Ethers exemplified include diethyl, diisopropyl, dipropyl, dibutyl, diisobutyl ethers and tetrahydrofuran. Process temperatures are e.g. +10 to -50 C. The process is preferably continuous.
Patent GB-650143-A (GB)
Title: Improvements in or relating to electric resistance devices
Inventor: GIBSON WILLIAM THOMAS
IPC: H01C7/04
Filed: 1948-08-25
Abstract: 650,143. Non-metal resistances ; temperature variable resistances ; combinations and sets of resistances. STANDARD TELEPHONES & CABLES, Ltd. Aug. 25, 1948, No. 22346. [Class 37] A directly heated thermistor comprises one or more thin plates of thermistor material sandwiched between two relatively massive terminal plates in such manner that the faces of each thermistor plate make good thermal and electrical contact with the said terminal plates. A definition of thermistor material is included in the Specification. As shown, Figs. 1 and 2, a thermistor comprises a plurality of thin discs or plates 1 of negative temperature coefficient thermistor material sandwiched between and soldered to thick terminal blocks 2, 3. This construction ensures uniform temperature distribution and is stated to be an improvement on a thermistor unit which consists of parallel connected thermistors each comprising a rod or block of thermistor material with thin end electrodes. Specifications 540,844 and 545,679 are referred to.
Patent GB-762763-A (GB)
Title: Process for the preparation of para-diisopropylbenzene
IPC: C07C15/02
Filed: 1953-08-14
Abstract: p-Di-isopropylbenzene is prepared by reacting benzene with propylene in the presence of an inorganic acid-reacting catalyst to produce a reaction mixture containing the isomeric diisopropylbenzenes together with mono-isopropylbenzene and higher poly-isopropylbenzenes, fractionating the di-isopropylbenzene fraction therefrom and fractionating high purity p-di-isopropylbenzene from the latter and recycling the remaining di-isopropylbenzenes, the monoisopropylbenzene and the higher polyisopropylbenzenes to the reaction step, said reaction step being conducted at a temperature in the range of - 80 DEG  to 150 DEG  C., a time in the range of 0.1 to 10 hours and a ratio in the range of about 1.6 to 2.5 mols. of total propyl reactant per mol. of benzene, whereby there is obtained a reaction mixture containing a major proportion of the isomeric di-isopropylbenzene fraction.  The mol. ratio of propylene to benzene is preferably 2 : 1.  Suitable catalysts are aluminium chloride, boron trifluoride, hydrogen fluoride, sulphuric acid and phosphoric acid.  A detailed example is given of a batchwise process using aluminium chloride as catalyst.  The successive steps in the process may also be conducted in a continuous manner.  A suitable flow-scheme for a continuous process is described wherein benzene, propylene, isopropyl chloride and aluminium chloride are fed continuously into a reactor, the product is washed countercurrently with water, aqueous caustic soda and again with water, and then is passed to three fractionating stages whereby pure p-di-isopropyl benzene is recovered and the remaining isopropylbenzenes are recycled to the reactor.  The product may be used as a solvent or as an intermediate for the production of p-dihydroxybenzene.  It may also be oxidized to terephthalic acid using, e.g., chromic acid in the presence of glacialacetic acid and sulphuric acid, or potassium permanganate, or using oxygen in the presence of an oxygen-containing heavy metal catalyst as described in Specification 762,849, the process being run continuously with the alkylation and fractionation if desired. Specification 641,250 also is referred to.
Patent GB-1465164-A (GB)
Title: Web perforating apparatus
IPC: B26D9/00
Filed: 1974-05-20
Abstract: 1465164 Perforating apparatus PROCTER & GAMBLE CO 20 May 1974 [25 May 1973] 22444/74 Heading B4B A web perforating apparatus comprises rollers 35, 36 for supporting a web 10 of e.g. tissue paper, means 40, 41, 43, 44 for forming continuous longitudinal lines 11, 12 of perforations, means 54, 61, 62 for forming slits 15, 16 at intervals coincident with at least one of the longitudinal lines of perforations, means 66, 70 for forming transverse lines 13, 14 of perforations each line having a transverse slit 19, 20 whereby a succession of perforated areas are formed in spaced relationship on the web, each area having at least one slitted corner. The longitudinal lines 11, 12 of perforations are formed by perforator wheels 43, 44 co-operating with anvil rolls 40, 41 and the transverse lines of perforations and slits 19, 20 are formed by a stationary serrated blade 70 being engaged by knife-edged blades 66, 67 mounted on a rotatable shaft 68. The longitudinal slits 15, 16 are formed by means of arms 61, 62 each having a slot 63, Fig. 4, such that as the arms rotate a portion of the web is pressed by the slotted end of the arm into engagement with a rotating knife-edged cutting disc 54.
Patent GB-360008-A (GB)
Title: An improved printing process
IPC: B41M1/20
Filed: 1930-07-25
Abstract: 360,008. Printing. UHER ENGINEERING CO., Ltd., Kubli House, Glarus, Switzerland. July 25, 1930, No. 22462. Convention date, May 26. [Class 100 (ii).]. Printing-surfaces ; stencils.-In a composite printing-surface for printing with a plurality of printing media, the printing-surface 3 is perforated and the printing media are applied thereto simultaneously from the front and the rear. The invention is described with particular reference to lithographic printing, when the water or other grease-repelling medium contained within the hollow printing cylinder, the walls 1 of which are made of earthenware, porcelain, or other permeable material, passes through perforations in an electrodeposited coating 2 and the printing layer 3 to Mpe) the greasy ink deposited upon the latter by external inking-cylinders. The supply of water &c. can be regulated by varying the internal pressure, or by adding gum to change its viscosity, or glycerine to diminish its tendency to vaporize. Alternatively, steam or atomized water may be used. Impermeable parts 9, having raised printing elements such as type, may be arranged on the same cylinder. and the points of junction may be sealed by indiarubber strips 10 and clamping strips 11, sunk below the level of the printing plane.