baber/WOPTO huggingface dataset:
Patent GB-572938-A (GB)
Title: Improvements in and relating to insulated electrical connectors or terminals
IPC: H01B17/26
Filed: 1943-09-20
Abstract: 572,938. Mounting terminals. STRATTON & CO., Ltd., and COX, H. N. Sept. 20, 1943, No. 15382. [Classes 36 and 38 (i)] The lead-through bolt j of a terminal bushing has a hexagonal or other suitably shaped portion i co-operating with an appropriately sectioned bore e of the bushing insulator a to prevent rotation of the bolt when an external conductor is being clamped thereto by a nut screwed on the bolt. Rotation of the insulator relatively to its flange supporting ring k, which engages a collar b of the insulator, is prevented by forming the ring with inwardly projecting fingers n which engage slots c in the collar. The internal lead from the casing or the like carrying the bushing is soldered to an extension h of the bolt.
Patent GB-690217-A (GB)
Title: Superregenerative system for receiving angular-velocity-modulated wave signals
IPC: H03D11/06
Filed: 1949-06-09
Abstract: 690,217. Frequency modulation. HAZELTINE CORPORATION. June 9, 1949 [June 25, 1948], No. 15410/49. Addition to 657,329. Class 40 (v).  A receiver for frequency-modulated or phasemodulated waves comprises a super-regenerative amplifier to which the incoming wave is applied, a blocking oscillator generating a continuous phase-reference wave, a phase detector for comparing the phases of the reference wave, and of the amplifier wave to develop an output signal, and means responsive to the output signal to tend towards the maintenance of fixed phase relationship between the two waves. As shown in Fig. 1, the received wave from 10 is fed to the super-regenerative amplifier 12, the output of which passes to an outer grid 26 of a mixer valve 21. The wave from the blocking oscillator 13 is fed through a network 24, 25 to the inner grid 23 of the valve 21. The amplifier 12 is quenched by the wave c, Fig. 2a, derived from the blocking oscillator 13, giving oscillatory bursts PA, Fig. 2b, on the outer grid 26; whilst the continuous oscillations from the source 13 rise in amplitude at PB, Fig. 2c, only when the bursts PA have reached saturation level. This feature eliminates the effect of amplitude modulation in the received wave. The frequency of the source 13 may be a sub-harmonic of the frequency of the amplifier 12, or may differ therefrom by an integral multiple of the quench frequency. The anode current of the mixer 21 comprises a series of pulses PM, Fig. 2d, which vary in amplitude according to the phase relation of the input waves. These pulses are integrated by the condenser 31 and resistor 32 to develop a saw-tooth wave which is rectified by a diode valve 22. The output signal is selected by a filter and is passed to an audio amplifier 46, and to a reactance tube 45 which adjusts the oscillatory frequency of the oscillator 13 in the sense to follow the variations in the incoming frequency. The switch 33 may be operated to replace resistor 32 by a coil 34 resonating with the capacity 31 at quench frequency or a multiple thereof, or at the frequency of oscillator 13 or amplifier 12. In a modification, Fig. 5 (not shown), the quench frequency is supplied from the oscillator 13 to the phase detector to determine the intervals when the phase comparison is made. A further modification, Fig. 6 (not shown), utilizes a triode phase detector, and its output signal is fed back to the grid of the oscillator valve 13 to adjust the blocking frequency thereof. The oscillatory circuit of the oscillator is coupled to a further high-Q circuit which maintains oscillation during the blocking period of the cycle. Specifications 662,693 and 690,216 are referred to.
Patent GB-580316-A (GB)
Title: Improvements in ophthalmic mountings
IPC: G02C5/22
Filed: 1944-08-15
Abstract: 580,316. Spectacles. ABBEY, A. (American Optical Co.). Aug. 15, 1944, No. 15588. [Class 97 (i)] Temple hinges comprise two frictionallyengaging members, one of which is of metal and the other of mouldable plastic material containing a plasticiser and providing a selflubricating action between the bearing surfaces of the hinge. As shown in Fig. 3, the spectacle front 8 which may be of cellulose acetate, methyl methacrylate, cellulose acetobutyrate or cellulose acetoproprionate containing a liquid plasticiser, carries lugs 14 of the same material which may be moulded with the frame or cemented thereto, being dove-tailed into suitable grooves in the front. The metallic hinge member comprises a blank 15, Fig. 6, having ears 23, 24 bent into positions 23<1>, 241 for assembly. Screws 25, Fig. 3, secure the member 15 to the temples 12 and the ears 23, 24 are held in frictional engagement with the plastic lug by a screw 16 passing through apertures 18, 19 in the member 15 and a corresponding aperture in the lug. In an alternative, the metallic member may be carried'on the front and engage a corresponding plastic member on the temples.
Patent GB-620842-A (GB)
Title: Improvements in or relating to the manufacture of resinous polymers
IPC: C08F24/00
Filed: 1946-05-23
Abstract: Methylene dioxanes of the formula <FORM:0620842/IV (a)/1> in which R is hydrogen or an organic radical are polymerized alone or in admixture with a compound having a CH2=C< group. Exemplary compounds are 4-methylene-, 4,5-dimethylene-, 2-phenyl-4-methylene- and 4-methylene-, 2-propyl-4-methylene-2-vinyl-4-methylene-5-methyl-1,3-dioxalanes. The comonomers may be vinyl chloride, bromide or fluoride; vinylidene chloride; acrylonitrilo, methyl methacrylate, ethyl acrylate; butadiene, isoprene, chloroprene, piperylene, 2,3-dimethyl-butadiene-1,3; ethylene, isobutylene, propylene. Polymerization may be effected by Friedel-Crafts-type catalysts, e.g. aluminium, zinc, cadmium, iron or tin chloride in bulk, or in solution in benzene, butane or ethylene dichloride; activated clays; ultra-violet light; or in alkaline aqueous emulsion using peroxides. The copolymers with acrylonitrile are soluble in ethylene dichloride, cyclohexanone and nitromethane.  The product may be used as plasticizers for other resins, for forming films and filaments, as adhesives and interlayers for safety glass.ALSO:4-methylene-1,3-dioxolane is prepared by refluxing dichlorhydrin, formalin and benzoic acid and distilling off the 4-chloromethyl-1,3-dioxolane (B P. 148-150 DEG  C.), which is dehydrohalogenated by refluxing with potassium hydroxide pellets and distilling (B.P. 90-92 DEG  C.). 2-propyl-4-methylene-1,3-dioxolane is similarly prepared, using butyraldehyde in place of formalin. 4,5-methylene-1,3-dioxolane is prepared by adding potassium permanganate solution to a mixture of 1,4-dichlorobutane-2 and acetone, cooled at -35 DEG  C., the filtered mass extracted with ether and crystallized.  Recrystallization from heptane yielded 1,4-dichlorobutanediol-2,3 (B.P. 61-62 DEG  C.), which is reacted with formalin and benzoic acid to yield 4,5-di-(chloromethyl)-1,3-dioxolane (B.P. 102 DEG  C. at 17 mm. Hy.), which is then dehydrohalogenated to 4,5-dimethylene-1,3-dioxolane (B.P. 115-116 DEG  C.).
Patent GB-544744-A (GB)
Title: Improvements in or relating to pipe, hose and like couplings
IPC: F16K33/00
Filed: 1940-10-24
Abstract: 544,744. Pipe couplings. GULLICK, Ltd., and SEAMAN, T. Oct. 24, 1940, No. 15632. [Class 99 (i)] A coupling for pipes, hoses &c. conveying fluid under pressure comprises a spigot 10 and socket 11 which are locked together by a coupling held in the locking position by the fluid pressure, and comprising links 21 pivoted by pins 22 in slots 18 on the socket, which is also provided with open slots 20 engaged by other pins 23 on the links 21. The links 21 are engaged with a flange 16 on the spigot, and the fluid pressure on the end of the spigot forces the flange against the links so that the pins 22, 23 are held at the locking ends of the slots, and the joint cannot be broken until the fluid pressure is cut off. The spigot engages a packing 12 secured by a flange 13 in the socket, a space being left at 25 for access of the fluid.
Patent GB-156715-A (GB)
Abstract: 156,715. Rechnitzer, A. June 14, 1919,. [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Multiplying and dividing apparatus with operating means; transfer mechanism; zeroizing mechanism.-Relates to motor-operated, multiple-bank machines adapted for the four rules of the type described in applicant's prior Specifications, more particularly Specifications 15908/11, 18642/12, in which the factors of a second calculation can be set while the machine is performing a previous calculation by the "so-called" simplified or abbreviated method, the operations being regulated by a controlling mechanism which "stores up" the setting and determines, during a revolution of the main shaft, the movements of the totalizing-counter, i.e. whether an addition or subtraction is effected, or an idle working takes place combined with an advance, or no movement of the totalizing-counter carriage, or a return of the carriage. The Specification does not admit of detailed satisfactory abridgment, but according to the present invention, the multiplicand key-board mechanism is stationary and the totalizing-counter carriage is movable in consequence of which the actuating or driving mechanism therefor and for the control-drum or magazine is modified. Means are also described for, (1) unlocking and adjusting the appropriate control-drum slides directly on the depression of a multiplier key, (2) arresting the control-drum at the proper moment, (3) effecting transfer on the totalizing-counter, (4) effecting the return of numeral wheels to zero enabling the result of a previous calculation to be retained, and (5) enabling a second calculation to begin automatically.
Patent GB-201702-A (GB)
Title: Improvements in or relating to casement, door and like stays
IPC: E05C17/34
Filed: 1922-06-06
Abstract: 201,702. Redmond, J., and Redmond, J. June 6, 1922. Pivoting adjustments; hinges readily separable about hinge pin.-The arms of a jointed folding stay are detachably pivoted together in such a manner that they can be separated only when the casement, door, or like member is in the close position, the joint having means for holding the window in adjusted intermediate positions. In the arrangement shown in Figs. 2 and 6, the arms a, b of the stay have disc-shaped ends joined by a pivot h, on which is mounted a pawl m adapted to engage with notches o, n when these are made to register by positioning the stay-arms. The disc of the lower arm carries a member g bent to engage the upper disc, which has a notch in its edge to register with the end of the member g when the door or casement is closed; the upper arm b can then be lifted away from the lower arm a. Spring-pressed catches may be employed instead of the catch m. In Figs. 7 and 10, the arm a has a slot p leading to the socket f and the pivot h carried by the arm b is formed with a reduced part q and a pin s to pass through the slot p and side groove t when the arms a, b are folded one over the other. Disconnection of the parts in anv other position is prevented bv the non-removable nut r and the projection s. The arms of the stay are locked in an adjusted position by the nut r and a projection u engaging one of a plurality of recesses v. In a further modification, a non- rotatable pivot on one arm has a projection for engagement with notches at the edge of the socket on the other arm of the stay, and an additional projection i; arranged to pass through a radial slot leading to the pivot socket when the casement is in the closed position.
Patent GB-545290-A (GB)
Title: Improvements in dry cells and method of making the same
IPC: H01M6/08
Filed: 1940-10-25
Abstract: 545,290. Centrifugal machines. BURGESS BATTERY CO. Oct. 25, 1940, No. 15720. Convention date, Nov. 9, 1939. [Class 23] [Also in Groups XXXVI and III] The metal electrode (e.g. the zinc can) of a dry cell is coated with "separating material" (e.g. ungelatinized starch) by a centrifugal or spinning operation. The can may comprise two layers 11 of zinc separated by vinyl acetate resin 12 as in Specification 531,379, [Group XXXVI], the end caps 13 of zinc being crimped to form a liquid tight joint with the layers 11, the bottom of the can being filled with wax or pitch 14. A liquid suspension of ungelatinized starch (which may contain an electrolyte such as ammonium or zinc chloride, sodium diohromate, or mercuric chloride) is placed in a can which is put on a rotating platform 30, Fig. 3, so that the suspension spreads over the can and the starch separates from the liquid leaving a moist layer of starch on the can excess liquid passing into a receptacle 31. Glue or other adhesive may be added to suspension, and moisture removed from the starch layer 15 by a current of warm air or by a heating coil 32. A layer of insulating material 16 is then placed in the can, the depolarizing material 20 incorporating the electrolyte added before or after compacting, and the carbon rod 17 forced through the depolarizing mass, sheet 16, and wax 14 as shown in Fig. 2. The upper end of the zinc can is bent over a washer 23 and the whole sealed at 27. The layer of starch is gelatinized by absorbing electrolyte and gradually swells, thereby reducing the contact resistance between the zinc can and the depolarizer. If no gelatinizing agent is present in the original electrolyte, the gelatinizing of the starch does not take place until zinc chloride is formed when the cell is used, or, in the case of an inert all, until the electrolyte is added. The layer of starch is thicker near the base of the can than at the top. Magnesium, iron, and other electrodes for dry cells may be similarly coated with starch or with other cereals or with clays, powdered silica, &c. To augment the metal content of the electrode, with powdered zinc or other metal may be incorporated in the starch suspension, the zinc being projected against the electrode surface during the spinning operation and held in position by the starch layer.
Patent GB-350699-A (GB)
Title: Improvements in or relating to stencil sheets
IPC: B41N1/24
Filed: 1930-05-22
Abstract: 350,699. Stencil sheets. HORII, S., 3, Kajicho, Kanda-ku, Tokio. May 22, 1930, No. 15837. [Class 100 (ii).] A stencil-sheet coating-composition comprises esters of polysaccharides and sperm oil. Starch acetate, mannan acetate, cellulose acetate, or cellulose nitrate may be used dissolved in suitable solvents and diluents, such as acetone, ethyl alcohol, butyl alcohol, benzyl alcohol, ethyl acetate, butyl acetate, amyl acetate, benzene, and toluene. Tempering agents, such as fatty oils, fats, waxes, naphthenic acid glycerides, naphthenic acid, fatty acids, or hydrocarbon oils may be added to the composition, which may be mixed with the paper stuff during the paper-making operation. An example of a suitable composition comprises, in stated proportions, cellulose nitrate, ethyl alcohol, butyl alcohol, ethyl acetate, butyl acetate, benzene, toluene, sperm oil, naphthenic acid glycerides, and oleic acid.
Patent GB-1499178-A (GB)
Title: Segmentally bonded non-woven fabrics
IPC: D04H1/54
Filed: 1975-04-17
Abstract: A fibre fleece containing heat-weldable material is consolidated in the nip of a two-roll calender by the use of heat and pressure. The calender rolls both have a surface patterning formed from elevations and depressions. The surface patterning of at least one of these rollers is formed by different groups of elevations. At least two types of groups differ from one another in a different size or density of the elevations in the respective group. If a dye-transfer foil is conveyed through the nip of this two-roll calender at the same time as the fibre fleece, the fibre fleece can be consolidated and dyed in the same operation. The properties of the consolidated nonwoven thus obtained can be varied, as desired, within a wide range by an appropriate selection of the size, number and/or density of the overlap regions of the elevations in the surface patternings of the two co-operating calender rolls in the nip.
Patent GB-1135840-A (GB)
Title: Improvements in stabilising systems for aircraft
IPC: B64C1/00
Filed: 1966-04-12
Abstract: 1,135,840. Aircraft. R. BUCHER. 12 April, 1966 [13 April, 1965; 11 Oct., 1965], No. 15856/66. Headings B7G and B7W. An aeroplane has a stabilizer 2 mounted above each wing and rotatable about an axis extending outwardly, upwardly and forwardly of the aircraft. Each stabilizer is hollow and has openings 4a which produce asymmetric drag on the stabilizer, causing it to rotate. This is stated to produce a stabilizing effect and to prevent stalling. The openings can be closed by hinged flaps 4 and the rotation stopped to allow the stabilizers to act as fixed wings. In another embodiment (Figs. 5 and 6, not shown) each stabilizer comprises a hollow box divided chordwise through the rotational axis, and the two halves are relatively slidable to form the openings.
Patent GB-351200-A (GB)
Title: Improvements in and relating to shuttles for looms for weaving
IPC: D03J5/08
Filed: 1930-05-23
Abstract: 351,200. Loom shuttles. NEWSOME, G., Holme Top Mills, Park Lane, Little Horton, Bradford, Yorkshire. May 23, 1930, No. 15857. [Class 142 (iii).] In peg clips comprising spring-actuated members P cooperating with a fixed flange P<1> having a depending web P<2> for securing the peg p, the flange is secured by a screw or bolt A passing through an aperture in the shuttle and engaging with a non-rotatable nut A<1> inserted from the underside of the shuttle through a hole which is subsequently closed by a wooden plug B.
Patent GB-439047-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H03F3/48
Filed: 1934-05-28
Abstract: 439,047. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, RUST, N. M., 109, London Road, and KEALL, O. E., 32, Rainsford Avenue, both in Chelmsford. May 28, 1934, No. 15877. [Class 40 (v)] In a reflex circuit arrangement, received oscillations are impressed on one grid of a multi-grid valve and after a change in frequency are fed back to another grid of the same valve for reamplification. In Fig. 1, the aerial input is applied to the grid G4 of a heptode V the anode circuit of which is coupled to a triode rectifier 7. The demodulated output from the valve 7 is applied to the inner grid G1 of the heptode V, the low-frequency output being taken from the grid G2. The heptode thus functions as a high - frequency tetrode and low - frequency triode amplifier. In the superheterodyne arrangement of Fig. 2, local oscillations from LO are injected in the anode circuit of the heptode V the output from the first detector 71 being fed back to the heptode inner grid G1, thence from G2 to the signal rectifier 13. In a modification, the frequency changer stage may be a radio frequency pentode, the output of which (at the intermediate frequency) is applied to a circuit such as Fig. 1, Fig. 3 (not shown) ; instead of the intermediate frequency, the audio frequency currents may be fed back to the heptode inner grid, Fig. 4 (not shown). The triode portion of the heptode V may constitute the signal rectifier, Fig. 6 (not shown). In all cases reaction may be obtained by back coupling the anode circuit of the heptode to the aerial as shown in Figs. - 1 and 2 ; the sense of the feed back to the inner grid is preferably chosen so that the modulation is opposed in phase to that of the highfrequency input, to give greater amplification with stability.
Patent GB-1109252-A (GB)
Title: Apparatus for making soldered can bodies
Inventor: OHLSSON OLOF BERTIL
IPC: B23K1/16
Filed: 1965-04-14
Abstract: 1,109,252. Making cans; curving; soldering. OLOF SMITH A.B. 14 April, 1965 No. 15901/65. Headings B3A, B3E and B3R. Apparatus for making soldered can bodies comprises a bending machine for bending flat metal blanks into cylindrical form, a transfer means for transforming the blanks from the bending machine to an arm of a soldering machine and a soldering machine which comprises radial supporting arms on a carrier which is rotatable stepwise to move the arms from a blank receiving station, to a solder foil supplying station and to soldering and cooling stations. The transfer means includes a rail to receive a blank from the bending machine, which rail has a vertical web and two horizontal flanges for supporting the edge of the cylindrical blank. The bending machine comprises horizontal parallel rollers 7, 8, 9, Figs. 1 and 3, carried on uprights 3, 4, and cross members 5, 6 above a table 2, the rollers 7, 8 being driven by gearing 15 and a belt 12 from a motor 13 and the position of the roller 9 being adjustable. Below the rollers is a rail 18 with a vertical web and two flanges on opposite sides of the web and at different levels. A cross beam 19 between the uprights 4 carries two parallel T irons 20 on which runs a carriage 23 connected to the piston rod 22 of a pneumatic jack carried the on beam 19 and pivotally carrying an upwardly directed arm 25 having a forkshaped upper portion 26 embracing the rail 18. Arms 35 mounted on the uprights 3 form guides for the can bodies and guide rollers 37, 38 and a guide surface 39 are provided. The soldering machine comprising a stepwise rotatable carrier 28, Fig. 4, with radially projecting horizontal support arms 29 having soldering burners 30 above the arms is arranged so that the rail 18 is in line with one of the arms. In operation a flat blank is fed from a stack of blanks to the bending machine and as the blank is fed between the rollers it curls around the rail with its leading edge held by one flange of the rail and when the complete blank has passed through the rollers the trailing edge falls down on to the other flange of the rail. The carriage 23 is then displaced so that the fork 26 displaces the body blank on to a support arm of the soldering machine. The blank feeding device, the means for supplying pressure to the jack 31 and the driving means for the soldering machine are synchronized.
Patent GB-1462025-A (GB)
Title: Device for driving rotary tools
IPC: B26D1/22
Filed: 1975-04-17
Abstract: 1462025 Cutting apparatus MARTIN SA 17 April 1975 [21 June 1974] 15938/75 Heading B4B [Also in Division B6] An assembly for use in a machine for e.g. slitting cardboard sheet, comprises a rotatable tool e.g. a cutting disc 14 and an opposing member 15 between which the material is fed and each mounted on a respective block 16, 17 and positionally adjustable relative thereto to vary the spacing between the tool and its opposing member, each block being movable in a direction transversely of the feed direction, and respective means for driving the disc and member 15 each means comprising a pinion 25, 36 meshing with a respective toothed shaft 12 which shafts are arranged to operate as feed rollers for feeding the material to the tool and its opposing part. The cutting disc 14 is rotatably mounted in a housing 26 which is pivotally mounted on a shaft 23 fixed to plates 22 on the block 16; the block is transversely adjustable in a crossbar 18. The housing is loaded by springs 28 such that the distance between the cutting edge of the disc and the member 15 may be varied via a screw 29. The member 15 is provided with teeth for meshing with its pinion 36.