baber/WOPTO huggingface dataset:
Patent GB-713200-A (GB)
Title: Improvements in or relating to the manufacture of plastic films or sheets
IPC: B29C55/06
Filed: 1951-11-22
Abstract: A continuous process for the manufacture of films or sheets from a normally solid polymer of ethylene containing a small proportion of a mould-releasing agent comprises passing the polymer at a temperature above its softening point through the rolls of a calender which are heated to a temperature above the softening point of the polymer to form a film, longitudinally stretching the film after it leaves the last roll of the calender while the film is maintained at about its calendering temperature, and then immediately and rapidly chilling the stretched film to a temperature below its softening point while maintaining tension thereon.  The mould-releasing agents comprise long-chain fatty acids, such as stearic, oleic, linoleic, carnaubic and palmitic acids, or their polyhydric alcohol esters or metal salts.  The p  ethylene polymers have a mol. wt. of over 15,000 and up to about 36,000 or higher and melt sharply at about 108-112 DEG C. The films formed on the rolls may be of at least 0.004 inch thickness and the calendering temperatures may be about 130-160 DEG C.  The polymer may contain a small proportion of an antioxidant, which may be a fatty oil-soluble condensation product of amyl phenol and formaldehyde, diphenyl-amine, phenyl-beta-naphthylamine, hydroquinone, or a phenol of mol. wt. above 200.  The temperature to which the stretched film from the calendar rolls is chilled may be below about 80 DEG C. and preferably 30-40 DEG C., the chilling being effected by passage of the film through a non-solvent liquid such as water.  In the example, 0.5 part zinc stearate as releasing agent and 0.2 part of an amyl phenolformaldehyde condensation product as anti-oxidant are added at 150 DEG C. to 100 parts of an ethylene polymer of mol. wt. 20,000.  The mixture is transferred to a set of calender rolls rotating at 30 ft. per min. peripheral speeds and maintained at 145-150 DEG C.  A sheet of polymer 0.004 inch thick is pulled downwardly off the take-off roll and passes about conveyer rolls immersed in water at 30 DEG C. and rotating at a peripheral speed of about 120 ft. per min.  The distance between the tangential release point on the take-off roll and the surface of the cooling water is about 4-6 inches.  The average thickness of the final film is about 0.001 to 0.0012 inch.
Patent GB-760879-A (GB)
Title: Improvements in or relating to communication systems for the transmission of signalsthrough a cable
IPC: H04B3/10
Filed: 1954-09-23
Abstract: 760,879. Automatic volume control. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 23, 1954 [Sept. 26, 1953], No. 27522/54. Class 40 (4). In a line communication system comprising at least one intermediate repeater station with a level control arrangement and a terminal amplifying station also provided with level control means, the gain control system is pilot controlled and comprises at the repeater stations incorporating gain control a variable artificial line impedance having two limiting values between which it is driven by a motor and at the terminal station an adjustable impedance varying as a function of the control voltage, e.g. a thermistor. Alternate stations 4, Fig. 1, incorporate a variable line impedance 28 which comprises ganged condensers 36-38, Fig. 3, coupled to a motor 29 as described in Specification 759,568 controlled by a pilot receiver 26, 27, 30. The terminal station 24 comprises a variable impedance 31, in the feedback path of the amplifier which includes a thermistor fed by the pilot controlled output of an oscillator 32. The reversible motor 29, the control circuit of which includes a contact voltmeter 53 and maximum and minimum relays 58, 59, drives the condenser gang to the minimum or maximum attenuation position according to whether the level of the pilot current is outside predetermined lower or upper limits respectively and a further relay 67 prevents operation if the pilot current disappears. A modified arrangement including a differentiating circuit to reduce pilot level variations arising during change-over of the line impedance at other stations, is described with reference to Fig. 5 (not shown). Level diagrams and attenuation-frequency characteristics are included in the Specification.
Patent GB-627990-A (GB)
Title: Improvements in and relating to motor driven record playing machines
IPC: G11B19/00
Filed: 1946-09-13
Abstract: 627,990. Gramophones. LAENG, F. Sept. 13, 1946, No. 27551. [Class 40 (ii)] In a motor-driven gramophone the electric motor is supported within a casing, mounted on a base-plate, by elastic sound-damping means and the driving mechanism includes a sounddamping coupling between the driving shaft and the substantially co-axial driven shaft of the turntable. As shown, the motor 3 has a frame 4 which is supported in the casing 2 by coil springs 11 to 14. Other coil or leaf springs, 15 to 18 between the side walls of the casing 2 and the frame 4 hold the motor resiliently in place from the sides. A screw 26 (Fig. 3) passes through the base-plate 1, on which the casing is mounted, and when tightened bears on the motor 3 in order to hold it firmly in place for transport purposes. The shaft of the motor which carries a governor 7 and a worm 6, is supported by the bearing 8 (Fig. 3). The worm 6 meshes with a worm-wheel 9, the shaft of which is supported by the bearing 10 forming part of the frame 4. This shaft carries at its upper end the lower coupling disc 19 of the sound-damping coupling, which disc is provided with three lugs 20. The turntable shaft 21 is supported by a ball-bearing 27 mounted in a seating 28 integral with the base-plate, and carries at its lower end the upper coupling disc 22, the three lugs 23 of which are resiliently coupled to the lower lugs 20 by springs 24 (Fig. 4). The springs 11 to 18 inclusive may be replaced by members of rubber, resin, glasswool or the like.
Patent GB-762489-A (GB)
Title: Improvements in or relating to electric circuit arrangements for starting and operating at least one low pressure electric discharge lamp
IPC: H05B41/232
Filed: 1953-10-07
Abstract: 762,489. Supply systems for space discharge lamps. GENERAL ELECTRIC CO., Ltd., and CATES, J. Jan. 5, 1955 [Oct. 7, 1953], No. 27556/53. Class 38 (4). At least one L.P. electric discharge lamp 9 having two heatable electrodes 7, 8 is started and operated from an A.C. supply by a circuit comprising an electrode heating transformer 22 having its primary winding 23 connected directly between the circuit input terminals 1, 2 and at least one secondary winding 25, 26. connected to respective lamp electrodes 8, 7 to supply heating current thereto, and connections between the lamp electrodes and the input terminals, or, as shown, wherein the transformer has an autoconnected main secondary winding 23, 24, between the latter winding and the electrodes, for supplying the lamp discharge current; these connections include an inductor 10 which forms part or the whole of the lamp's ballast impedance, is magnetically separate from the transformer, and is connected so as to be between one 7 of the lamp electrodes and one input terminal or as shown the free end of the main secondary winding, and a capacitor 12 is connected so as to be between a tapping 11 on the inductor 10 and the other input terminal 2; the capacitor 12 and tapped off part 11<SP>1</SP> of the inductor 10 in series therewith between the input terminals form a non-resonant starting circuit for applying between the lamp electrodes a voltage pulse generated by the charge current of the capacitor 12 and stepped up by the autotransformer action of the tapped inductor 10. The capacitor 12 also serves to correct the power factor, the overall ballast impedance may be capacitive, and an earthed starting strip 13 may be provided. Instead of both electrodes being heated by secondary windings one may be serially connected between the capacitor 12 and the input terminal 2. Embodiments are disclosed wherein a pair of lamps are connected in parallel, and in which each lamp is replaced by a chain of lamps in series. The switch, not shown, by which the circuit is connected to the supply is preferably of such type which makes and breaks a number of times in one operation, to ensure lamp starting should the instantaneous value of the supply voltage be low when the switch contacts first make. The construction and values of circuit components are described.
Patent GB-721728-A (GB)
Title: Improvements in or relating to horticultural glasshouses
IPC: A01G9/14
Filed: 1952-11-03
Abstract: 721,728. Glasshouses. CHASE PROTECTED CULTIVATION, Ltd., and ELLIS, L. H. Sept. 29, 1953 [Nov. 3, 1952], No. 27558/52. Class 20 (1). A glasshouse having a low-pitched roof and sides which slope inwardly from the base to the eaves, has its roof and side frames connected to and carried by a stiff truss comprising rafters 3 and styles 4 which conform to the slope of the roof and sides and are extended beyond their junctions at 17 to meet respectively an upright brace 2, at 16, which springs from near the foot of the sides, and a transverse brace 1, at 15, which springs from the ridge of the roof, the braces being themselves extended to meet at 14. The brace 2 may be vertical, and the brace 1 may be substantially horizontal. A peak rail 19 may be fitted for strengthening. Two such trusses may be spaced lengthwise of the greenhouse, the extensions of the truss facilitating carrying the greenhouse by means of transverse lifting bars bolted to the extensions after removal of the frames. The roof sections end short of the ridge to provide ventilating spaces which have horizontal lights mounted on pivoted arms at each end of the light.
Patent GB-1393138-A (GB)
Title: Machine for the electrolytic plating of at least one portion of the surface of a conducting piece
IPC: C25D5/02
Filed: 1972-06-13
Abstract: 1393138 Electro-plating apparatus OXY METAL FINISHING (SUISSE) SA 13 June 1972 [16 July 1971] 27604/72 Heading C7B - A conducting workpiece 5, pressed against a support member 4, is electro-plated at portions of its surface defined by openings 12 in the support member. The electro-plating (e.g. with Au) is effected by connecting the workpiece as cathode and pumping electrolyte through nozzles 21 connected as anodes. So as to ensure that the electrolyte simultaneously contacts the total surface area to be plated, pressure within the electrolyte is equalized by pumping the electrolyte into an enclosure 3 through openings which face each other and then through openings 17 and 18 within the enclosure. So as to reduce interaction between (a) streams of electrolyte moving upwardly towards the workpiece from the nozzles 21 and (b) electrolyte moving downwardly away from the workpiece, the openings 12 in the support member 4 have walls arranged slantwise to the nozzle axes. The workpiece is electrically connected by a metallic strip 11 and the nozzles, which are Pt tubes, by a wire 22. As illustrated in Fig. 3 (not shown), the workpiece 5 has openings (6) therethrough. During the electro-plating, the electrolyte is prevented from escaping through these openings by means of a sheet 9 of synthetic rubber interposed between the workpiece and a hydraulic press 8, 10 used for pressing the workpiece against the support member. In a modification, Fig. 4 (not shown), the workpiece is electro-plated over an elongated area, the support member has a correspondingly shaped opening (26) and an electrolyte nozzle (27) has a slit shaped opening. Specification No. 1332568 is referred to.
Patent GB-1514932-A (GB)
Title: Magnetic attachment of electronic monitoring apparatus
IPC: G01M7/02
Filed: 1975-05-16
Abstract: 1514932 Magnetic holding devices BRITISH STEEL CORP 16 May 1975 [21 June 1974] 27702/74 Heading H1P In apparatus for attaching electric monitoring apparatus, e.g. for vibrations, to the surface of a machine; a magnetizable support plate 1 has a further-conical portion 5 fitting into an aperture 12 of the surface 4 of the machine and a securing threaded member 3 engaging a bore of the surface. A recess of the plate is defined by an upstanding lipped annular wall 8 surrounded by a recessed flange, and the underside of plate 1 is spaced from the machine surface. The transducer housing 2 comprises a cylindrical casing 14 with a lower annular flange 15 with dependent lip 16 and an 0-ring set in annular groove 18 of the casing underlying the flange. A cage 22 slidable within bore 21 of the casing supports transducer 23 which is cable connected to measuring equipment (not shown), and the cage has horizontal upper surface 25, dependent side face 26, a neck 27 of reduced diameter, and a lower portion 28 of similar diameter to side face 26 housing permanent magnet 29; the plastic encapsulated transducer 23 being screwed into the cage at 31. The cage is spring-loaded downwards against stops 32. In application to the machine housing 2 is secured to support plate 1 by engagement of the O-ring with recess 7, when lip 16 extends into the annular recess 10, wall 8 extends into the space under flange 15, and magnet 29 is retained to the upper surface of plate 1. The transducer may be, e.g., an accelerometer responsive to, e.g., vibrations of rolling mill equipment; or may detect pressure or temperature changes. The magnet 29 may be an electromagnet, or of annular cross-section in which the transducer is mounted. The transducer may also operate a safety cut-off switch.
Patent GB-731065-A (GB)
Title: Manufacture of antidiazotates of aromatic amines containing basic substituents
IPC: D06P3/68
Filed: 1951-11-26
Abstract: The invention comprises antidiazotates of the general formula <FORM:0731065/IV (b)/1> or <FORM:0731065/IV (b)/2> (wherein X and Y each represent an alkyl or alkoxy group or a halogen atom), and the manufacture thereof by diazotizing an amine of the general formula <FORM:0731065/IV (b)/3> or <FORM:0731065/IV (b)/4> (wherein "acyl" represents the residue of an aliphatic or aromatic carboxylic or sulphonic acid), converting the diazonium compound by means of a caustic alkali solution in the cold into its syndiazotate, and heating this with a concentrated caustic alkali solution to effect transposition into the antidiazotate with simultaneous hydrolysis of the acylamino group.  Examples describe the preparation of potassium antidiazotates starting from (1) 1-acetylamino-4-amino-2 : 6-dichlorobenzene and (2) 1-acetylamino - 4 - amino - 2 : 6 - dibromobenzene, and of sodium antidiazotates starting from (3) 1 - propionylamino - 4 - amino - 2 : 5 - dichlorobenzene and (4) 1-acetylamino-4-amino-2 : 5-dibromobenzene.  Additional starting materials specified are: 1-benzenesulphonylamino-, 1-(41-chlorobenzoylamino)- or 1-butanesulphonyl - amino - 4 - amino - 2 : 6 - dichlorobenzene, 1 - benzoylamino or 1-p-toluenesulphonylamino-4-amino - 2 : 5 - dichlorobenzene, 1 - butyrylamino - 4 - amino - 2 - chloro - 5 - methoxybenzene, 1 - acetylamino - or 1 - (31 - sulpho - 11 - benzoylamino) - 4 - amino - 2 - chloro - 6 - methylbenzene, and 1 - acetylamino - 4 - amino-3 - chloro - 6 - methoxybenzene.  Specifications 5984/91 and 5689/03, [both in Class 2], are referred to.
Patent GB-1070915-A (GB)
Title: Magnetically confined glow discharge apparatus
IPC: H01J41/20
Filed: 1965-06-30
Abstract: 1,070,915. Ion pumps. VARIAN ASSOCIATES. June 30, 1965 [July 20, 1964 (2)], No. 27774/65. Heading H1D. Magnetically confined glow discharge apparatus, e.g. an ion pump, comprises an evacuable envelope 24 containing a stack of oppositely polarized magnets 31, 32 with cathode members 35 and anode members 36 disposed between polepieces 33 which extend outwardly from the poles of the magnets. The magnets 31, 32 may be of ferrite or steel, the polepieces 33, which may be tapered, of nickel-plated soft iron, and the envelope 24 of stainless steel. Cathode plates 35, e.g. of titanium, are secured to the polepieces 33 by rods 38 and pins 39 (Fig. 4, not shown). Alternatively, the polepieces 33 may be clad with the cathode material. The anode members 36 are circular cells of titanium or stainless steel brazed or welded together to form a split annulus (Fig. 3, not shown). An additional inner annulus of smaller cells may be provided (Fig. 3A, not shown). Alternative anode arrangements include a brazed or welded assembly of circular and radial strips (Fig. 3B, not shown), two rows of circular cells arranged in a square formation around magnets of square crosssection (Figs. 5 and 6, not shown) and two rows of circular cells arranged on each side of magnets of rectangular cross-section (Figs. 7 and 8, not shown). A coolant fluid, e.g. air, water or refrigerant such as liquid nitrogen, is passed through a conduit 49 brazed to the edges of the polepieces 33.
Patent GB-1074167-A (GB)
Title: Improvements in and relating to the attachment of rails to wooden sleepers
IPC: E01B29/24
Filed: 1965-07-01
Abstract: 1,074,167. Securing chair plates to sleepers. KARL RICHTBERG KOMM. GES. July 1, 1965 [July 10, 1964], No. 27848/65. Heading E1G. Chair plates are bonded to wooden sleepers, impregnated with tar oil, by radiant heat within a hood covering the plate and by pressure. A pair of chair plates may be spaced by a jig having a screening heat insulating layer adjacent the wooden sleeper. The bonding agent, which may be based on phenol resins with vinyl polymers, may be impregnated into the sleeper by cutting slots therein and forcing the bonding agent into the slots by ultra-sonic vibrations.
Patent GB-187142-A (GB)
Title: Improvements in clutches
IPC: F16D43/22
Filed: 1921-10-20
Abstract: 187,142. Galley, F. G. Oct. 20, 1921. Clutches, claw; shaft couplings.-In clutches adapted to disengage under overload, applicableto the driving-mechanism of advertising-apparatus &c., a driving-member carries pins engaging slots in tilting dogs, which are pivoted on the driven member and are held in engagement by adjustably spring-controlled levers. Means may be provided for preventing disengagement if the driven parts tend to overrun, as when switching- off power. A driving-pulley 2, Fig. 1, loosely mounted on a shaft 1, carries pins 4 engaging jaws 5, Fig. 3, in dogs 6 pivoted at 7 to a driven member 8. The member 8 is integral with a coupling-sleeve secured to the shaft 1 by a pin 9<a>, and to a shaft 3 by set-screws 9. The dogs 6 are retained in position by levers 11 pivoted at 12 and drawn together by adjustable springs 13, but turn through 90‹ to release the pins 4 if a jam occurs in the driven parts. The device must then be manually reset. The shape of the jaws 5 prevents escape of the pins 4 and stops 15 prevent the dogs 6 from tilting in the opposite direction is overrunning tends to occur.
Patent GB-279472-A (GB)
IPC: H02H3/00
Filed: 1927-10-20
Abstract: 279,472. British Thomson-Houston Co., Ltd., (Assignees of Blake, D. K.). Oct. 22, 1926, [Convention date]. Cut-out arrangements.-In a system similar to that disclosed in Specification 262,767 in which a circuit breaker 6 is tripped when there is reverse energy flow in a feeder 7 due to either a fault or to the magnetizing current of a transformer 3 being drawn from the network 4 due to the circuit breaker 5 being opened, and the breaker 6 is reclosed according to the voltage thereacross as determined by a wattmeter relay 9, the reclosing contacts 13 of the relay 9 are in series with contacts 23 of another wattmeter relay 19. A voltage coil 20 of the relay 19 is connected to the network 4 and a phasing coil 21 is connected across the circuit breaker 6 so as to give a characteristic to the relay out of phase with the voltage across the breaker 6. As both contacts 13, 23 have to be bridged before the breaker 6 is reclosed, reclosure can only occur in a more limited zone than in the prior system, thus preventing reclosure when the feeder voltage lags behind the network voltage, and consequent " pumping." When applied to a three phase system, the coils 20, 21 can be connected to different phases. Specification 262,431 is also referred to.
Patent GB-1028592-A (GB)
Title: Readily releasable drive connection for appliance
IPC: A61C17/32
Filed: 1964-07-07
Abstract: 1,028,592. Toothbrushes, SUNBEAM CORPORATION. July 7, 1964 [Oct. 4, 1963], No. 27975/64. Heading A4K. [Also in Division F2] An electric toothbrush comprises a toothbrush 21 releasably secured to a shaft 22 driven by an electric motor housed in a handle 20. The coupling comprises a recess 32 in the toothbrush having a flat sided part 36, ribs 40, 41 and projections 40a, 41a which respectively engage a flat torque transmitting end 22b, a circular part 22a and a groove 24 in the shaft.' A split 38 in the end of the toothbrush facilitates assembly.
Patent GB-298195-A (GB)
Title: Means for operating lifting jacks from a distance
IPC: B60S9/10
Filed: 1928-09-29
Abstract: 298,195. Bolard, A. J. G. Oct. 5, 1927, [Convention date]. Stands or supports for vehicles.-Fluid-pressure jacks are actuated by means of a servo-motor operated by suction from the induction pipe of an internal-combustion engine. As applied to a motor vehicle, a pipe 1 from the induction pipe D of the engine B is connected through a control valve 2 to the cylinder 3 of the servo-motor. The cylinder contains a tension spring 5 tending to raise the piston 4, which when undersuction is forced downwards and operates the plunger 7 of an oil pump 8 in a reservoir 9 so forcing oil under pressure through a distributing valve 14 and pipes 15 to fluid pressure jacks E<1>, Fig. 2, mounted on the vehicle adjacent to the wheels A'. The control valve is operated by linkage 19 connected to the piston rod 6 of the servo-motor. A safety valve 18 is provided in the fluid pressure supply pipe. The spring 5 may be dispensed with by arranging two servo-motors in opposite phase. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of compressed air from an air compressor plant for operating the servo-motor. This subject-matter does not appear in the Specification as accepted.
Patent GB-655816-A (GB)
Title: Method of producing figures in relief on articles of thermoplastic material
IPC: B44C1/24
Filed: 1948-10-28
Abstract: 655,816. Moulding ornamental shapes. LAGUARDIA, L. N. F. Oct. 28, 1948, No. 28031. Convention date, Oct. 29, 1947. [Class 87 (ii)] [Also in Group XV] A heated rod 1, whose conical end 2 is grooved, is pressed superficially into the surface of thermoplastic material, such as acrylic resin. The melted resin is forced out through the unimmersed grooves to solidify into ornamental shapes, Fig. 7. Variation of the heating of the rod, of the grooving and of manipulation produces variant shapes.
Patent GB-1022585-A (GB)
Title: Improvements in or relating to liquid plastisol compositions
IPC: B32B27/00
Filed: 1963-07-17
Abstract: A liquid plastisol composition suitable for preparing a foamed coating by applying it to a surface and heating consists essentially of (a) 100 parts by weight of polyvinyl chloride, (b) between 50 parts and 125 parts by weight of plasticizer, between 25% and 90% by weight of the total amount of plasticizer being a secondary petroleum derived plasticizer, and (c) between 1 part and 20 parts by weight of a blowing agent chosen from sodium carbonate and bicarbonate, ammonium carbonate, potassium carbonate and bicarbonate, and urea. The composition may also contain fillers, heat stabilizer and flame retardants such as antimony oxide.ALSO:Foamed coatings are prepared by applying to a surface a liquid plastisol composition consisting essentially of (a) 100 parts by weight of polyvinyl chloride, (b) between 50 parts and 125 parts by weight of plasticizer, between 25% and 90% by weight of the total amount of plasticizer being a secondary petroleum derived plasticizer, and (c) between 1 part and 20 parts by weight of a blowing agent chosen from sodium carbonate and bicarbonate, ammonium carbonate, potassium carbonate and bicarbonate, and urea, heating the coated surface until the fusion temperature is reached and then cooling.  The coated surface is preferably a metal surface and the compositions may be applied by spraying, dipping, knife spreading, roller coating, brushing or by cascading upon the surface.