baber/WOPTO huggingface dataset:
Patent GB-745229-A (GB)
Title: Improvements in ship-propelling speed-reduction gear
Inventor: DAVIS ALLAN WILLIAM
IPC: B63H23/00
Filed: 1953-05-06
Abstract: 745,229. Driving gear for ships' propellers. FAIRFIELD SHIPBUILDING & ENGINEERING CO., Ltd. July 5, 1954 [May 6, 1953], No. 12544/53. Class 114. In a ship-propelling speed reduction gear comprising a large driving gear-wheel 14 driven at low speed by a reciprocating engine 10, a large driven gear-wheel 20 driving a propeller shaft 13 at a still lower speed, an intermediate fluid slip coupling 15 (hydraulic or magnetic), a small gear-wheel 17 connected with the driving gear-wheel 14 and rotating at high speed the driving component of the coupling, and a small gear-wheel 19 rotated at high speed by the driven component of the coupling and connected with the driven gear-wheel 20, the speed-change ratio is greater between the coupling and the driven gear-wheel 20 than between the driving gear-wheel 14 and the coupling. The gear-wheel 14 drives two gearwheels 17, each of which drives a coupling 15, each driving a gear-wheel 19, both these gearwheels 19 being connected to and driving the gear-wheel 20. Hence the drive between the engine 10 and the large driven gear-wheel 20 is divided into two lines of transmission, each incorporating its own fluid slip coupling 15.
Patent GB-1319021-A (GB)
Title: Process for preparing methylterephthalic and methylisophthalic  acids
IPC: C07C51/265
Filed: 1971-04-30
Abstract: 1319021 Methyl-tere- and iso-phthalic acids TEIJIN Ltd 30 April 1971 [1 May 1970] 12545/71 Heading C2C A process for preparing methyl terephthalic acid and 4-methyl-isophthalic acid comprises oxidizing pseudocumene in 3 to 25 parts by weight per part by weight of pseudocumene, of acetic acid as solvent, with molecular oxygen under an oxygen partial pressure of not less than 0À2 atmosphere at a reaction temperature (T‹ C.) of 100 to 220‹C. in the presence of a catalyst comprising a cobalt compound, bromine or a bromine compound and optionally a manganese compound, the atomic ratio of manganese in the manganese compound (if present) to cobalt in the cobalt compound being not more than 4 : 1, the manganese in the manganese compound having the same valency as the cobalt in the cobalt compound and the cobalt, bromine and manganese compounds being all soluble in acetic acid under the oxidation conditions, the amount of catalyst being defined by the following equations wherein A is the ratio of the weight of cobalt in the cobalt compound, or the total weight of the cobalt in the cobalt compound and the manganese in the manganese compound, to the total weight of the pseudocumene and the acetic acid and B is the ratio of the gram-atoms of bromine or bromine in the bromine compound to the gram-atoms of the cobalt in the cobalt compound or the combined gram-atoms of the cobalt in the cobalt compound and the manganese in the manganese compound. Examples are furnished.
Patent GB-741160-A (GB)
Title: Improvements relating to electrical measuring instruments
Inventor: WELLS ALAN ARTHUR
IPC: G01N25/72
Filed: 1953-05-06
Abstract: 741,160. Current measuring instruments. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 8, 1954 [May 6, 1953], No. 12632/53. Class 37. [Also in Group XXXVIII] A sensitive critically damped low inertia galvanometer for indicating the strength and duration of short current pulses comprises plural lengths of fine wire hanging in parallel slack catenaries between insulating supports in a narrow catenary shaped airgap between correspondingly shaped polepieces establishing therein a magnetic field in a vertical plane at right-angles to each catenary at all points of its length, and the wires are connected respectively in series with plural thermojunctions disposed along the anticipated line of fracture of a test piece to detect the temperature wave set up by energy released at the instant of fracture; the deflections of the wires being displayed or recorded by optical projection. Soft iron yokes 1, 6 (Fig. 1) having adjacent surfaces 2, 7 of catenary shape are clamped at their ends on opposite faces of bar magnets 4 and a front cover-plate 14 (Fig. 2) is fitted with pivoted arms 15 located by stops 17 adjustable in arcuate slots 18 to carry insulating pegs 10 and terminal blocks 9 to which are attached plural fine copper wires 8 of 0.008 inches diameter whose slackness is adjustable by positioning arms 15 so that they hang freely in the catenary airgap between yokes 1, 6, which is traversed by a magnetic field of 500 lines per square centimetre in a vertical plane normal to the wires at all points of their length. An aperture 11 in yoke 1 accommodates a projection lamp (not shown) and the images of the catenary wires are focused by a lens system 13 on a calibrated scale or photographic plate. A mask having a slit perpendicular to the wires may be interposed between the lens and the plate, and uniformly moved along the line of the wires as a time axis by the distortion of a bimetallic strip which is electrically heated from the switchable circuit of the projection lamp. Each catenary wire is connected in series with its associated thermojunction disposed along the anticipated fracture line and with another cold thermocouple at a remote point of the test piece so that the temperature wave at each thermocouple may be measured or recorded as the fracture progresses.
Patent GB-195543-A (GB)
Title: Improved folding boxes or cartons
IPC: B65D5/32
Filed: 1922-05-04
Abstract: 195,543. Hunt, R. May 4, 1922. Folding boxes.-A folding cardboard box of the kind which can be extended ready for use by h a n d or by pulling strings, has the bottom so formed, either by removing a piece or by having slits, that the central portion folds outwardly while the end portions fold inwardly with the ends of the box. The box may be formed from a single blank, either with a slit bottom h as in Fig. 7, or with a bottom having an elliptical hole therein, or it may be made from two blanks, one comprising the cover, sides and an uncut bottom, and the other the two ends and a cut bottom. The central portion of the cut bottom c' of such a box, shown in plan in Fig. 3, may be attached to the uncut bottom c.
Patent GB-1094527-A (GB)
Title: Improvements relating to annular magnetic cores
IPC: C04B35/26
Filed: 1965-03-25
Abstract: 1,094,527. Magnetic compositions. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 25, 1965 [March 28, 1964], No. 12697/65. Heading H1H. An annular magnetic core having an external diameter less than 0À9 mm., an internal diameter of at least half the external diameter, a height from 0À2 to 0À3 mm., a value of uVl>18mV, and a value of uVl/dVz not less than 5 at a disturbance ratio of 0À55 and a rise time of 0À2Á sees., is manufactured by sintering a presintered product prepared from a mixture of oxides or equivalent compounds having the composition: The manufacturing process comprises preparing a finely-divided mixture of the oxides, presintering between 600 and 700 C., pulverizing, granulating using an organic binder such as polyvinyl alcohol, separating a fraction with a grain size between 50Á and 120Á, moulding these granules into rings, introducing the rings into an oven on a Pt-Rh alloy plate at such a rate that the rings reach a zone between 1350 and 1370 C. within 60 seconds, cooling the rings at not more than 30/min. to a temperature between 930 and 975 C. and quenching the rings in air at room temperature, wherein the oven atmosphere is air or air and oxygen.
Patent GB-540240-A (GB)
Title: Improvements in cooling arrangements for thermionic valves
IPC: H01J19/28
Filed: 1940-08-08
Abstract: 540,240. Cooling thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and YOUNG, A. J. Aug. 8, 1940, No. 12751. [Class 39 (i)] [Also in Group XXII] Cooling fins are fixed to the anode of a thermionic valve by providing the anode 4 with a number of loosely fitting rings 2 having slots 3 to locate fins 1 extending along the length of the anode, applying fusible metal between the anode and edge of the fins, holding the fins and rings in association with the anode by resilient clamping bands 5, applying heat to fuse the solder tightening the bands and withdrawing or reducing the heat to allow the assembly to cool. The clamping bands may be replaced by metal rings having a number of screws equal to the number of fins. The rings, anode and fins are all tinned before assembly. The heating may be effected by means of the valve filament and anode, or the whole assembly may be immersed in a solder bath. After cooling the bands 5 are removed and a band 6 with handles 7 for carrying purposes applied in the recessed portion 8 of the fins. The solder may be ordinary tinman's solder or tin-antimony solder.
Patent GB-353504-A (GB)
Title: Improvements in or relating to hydraulic printing and impressing or stamping presses
IPC: B41F1/26
Filed: 1930-04-25
Abstract: 353,504. Lubricating by mechanical means. GRœNBERG, J., 13, St³lerstrasse, and SCHEU GES., F. A., 19, Neues Ufer, both in Berlin. April 25, 1930, No. 12761. [Class 12 (iii).] In a hydraulic printing and stamping press, the pumps 11 and actuating mechanism 14,15,16 and 21,22,23 are enclosed in an inner easing 10, at the bottom of which sufficient lubricating oil collects for the gear 15 to dip therein. The oil carried upwards by the gear 15 is removed by a scraper 25 located near the top of the casing 10, and is collected in a reservoir 24 having nozzles 26 from which it drops on to the driving-gear.
Patent GB-787313-A (GB)
Title: Improvements connected with hydraulic or pneumatic rams
Inventor: REYNOLDS LIONEL ARTHUR
IPC: B66F3/32
Filed: 1956-04-26
Abstract: 787,313. Pneumatic rams. TANGYES, Ltd. April 26, 1956, No. 12788/56. Class 8(2). [Also in Groups XXIX and XXX] The stroke of a ram 5 in a cylinder 3 is limited by a spring-loaded trigger 11 which, when the ram extends, engages a groove 3a. When the ram tends to rise further, the trigger pivots about a pin 14 and presses down a member 10 thereby opening a valve 8 and allowing the fluid supplied to the cylinder to return to exhaust via a passageway 5c and ports 3b.
Patent GB-696853-A (GB)
Title: Improvements in or relating to devices for controlling the position of a movable element
IPC: H01F21/06
Filed: 1951-05-31
Abstract: 696,853. Inductances. GENERAL ELECTRIC CO., Ltd., BRANDRETH, R. D., and RUNCIMAN, R. D. May 20, 1952 [May 31, 1951], No. 12920/51. Class 38 (ii). [Also in Group XL (c)] A device for adjusting the tuning of a resonant circuit by adjusting the position of a magnetic core of an inductance core comprises a bowed spring 5, the ends of which are held against a flat surface by a screw 6, and an elongated member 8 to the free end of which the magnetic core is attached by a wire 9, so that the position of the free end of the member 8, and thus the position of the magnetic core, may bo varied by adjustment of the screw 6. The device may be employed in a push-button-tuned radio receiver comprising a number of selectable pre-set resonant circuits each comprising a timing device as shown. Each device is supported in a channel member 1 having a U-shaped cross-section and arranged to be mounted in a slot in the back-board 2 of the receiver, so that the channel member projects on the outside of the receiver. Coarse-tuning adjustment is effected by sliding the channel member 1 as a whole within its slot in the back-board 2, and fine-tuning adjustment is effected by rotating the screw 6; a screw-driver slot 10 is provided to permit adjustment of the screw from the outside of the receiver.
Patent GB-455428-A (GB)
Title: Improvements in film feeding devices for cinematograph apparatus
IPC: G03B1/34
Filed: 1936-05-07
Abstract: 455,428. Kinematograph apparatus. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. May 7, 1936, No. 12957. Convention date, Oct. 3, 1935. [Class 97 (i)] In beater feed mechanism, the beater is formed with film engaging surfaces adapted to films of two or more different widths ; the surfaces for the narrower films may be between surfaces engaging the margins of wider films and the surfaces may be at different distances from the beater pivot so as to produce film movements of different lengths ; teeth may be provided on the beater to limit the length of the feed stroke. As shown, the beater 5, rocked on a pivot 10, has surfaces 23 for the margins of a wider film, and surfaces 24 for a narrower film, the surfaces 24 being nearer to the pivot than the surfaces 23. Recesses 25 are formed between the surfaces 24 to provide cross-bars supporting the narrower films between the image frames. One tooth 21 may be provided on one or both sides of the beater to engage the perforations of the wider film, and a tooth 22 may be provided at the middle of a cross-bar to engage the perforations of the narrower film; the tooth 22 is of such length as to avoid contact with the wider film. The beater may be rocked by a known system of links and cranks to render only one stroke in three effective for film feeding, and the apparatus may be provided with interchangeable sprockets for the different films.
Patent GB-796238-A (GB)
Title: Variable attenuators
IPC: H01P1/22
Filed: 1956-04-27
Abstract: 796,238. Transmission line attenuators. STANDARD TELEPHONES & CABLES, Ltd. April 27, 1956 [May 2, 1955], No. 12976/56. Class 40 (8). [Also in Group XL (c)] An attenuator for a strip transmission line comprises an attenuating card lying adjacent the line and associated with means for distorting it. The line comprises a narrow planar conductor 19 and a wide planar conductor 21 separated by a solid dielectric layer 20. The card 22 is wider than the conductor 19 and is shaped as shown in Fig. 2 to cause minimum reflection in the line. The card is slightly flexible and may be made of a plate of phenol formaldehyde coated with a thin film of graphite. To increase the attenuation the edges of the card are urged towards the wide conductor 21 by means of pairs of thumbscrews 24 which act through a pressure plate 23 made of lossy dielectric material. Throughout a certain range the attenuation is proportional to the pressure. In a modification (Fig. 4), the card 22 is supported near its longitudinal edges by elongated lossy dielectric members 25. Pressure is applied through a shaft 27 and a lossy pressure plate 26. A pointer 30 driven by a rack and pinion gear indicates the degree of attenuation. In a further modification (Fig. 5, not shown), for producing amplitude modulation of the transmitted energy the pressure plate is made of magnetic material and is subject to the field of an electromagnet whose windings carry a signal current. Specification 704,050 is referred to.
Patent GB-1013070-A (GB)
Title: A mechanism for sensing coins
IPC: G07F5/04
Filed: 1963-04-03
Abstract: 1,013,070. Coin freed mechanism. H. MATSUSHIMA. April 3, 1963 [April 3, 1962], No. 13151/63. Heading G4V. Coins projected down a ramp 10 pass into a blind shoot 14 in which they accumulate until the last coin falls back behind a step 11 to operate a switch arm 24. The bottom edge of the blind shoot is provided by a pivoted flap 16 which is deflected to discharge the coins when the requisite number have filled the shoot. Alternatively, discharge may be effected by forming the end of the blind shoot with a deflectable plate. Stops 26, 27, 28 may be disposed in the shoot to alter the number of coins accumulated before switch arm 24 is actuated.
Patent GB-131972-A (GB)
IPC: F41A19/33
Abstract: 131,972. Snell, H. de M., and Leeding, E. J. July 10, 1918. Machine guns.- Relates to trigger mechanism, adjustable for firing single shots or continuously, for automatic guns of the type having a recoil lever and a percussion lever both adapted to be forced back against the pressure of their springs by the recoiling breechblock. According to the invention, the trigger has pivoted thereto a sear-actuating arm adapted to be moved forwards an adjustable extent by the pull of the trigger, the extent of the forward movement deciding whether the firing is single-shot or continuous. Preferably, the extent of the forward movement of the arm is controlled by limiting the pull of the trigger by an adjustable stop. In the construction shown, the sear-actuating arm H, shown separately in Figs. 7 and 7a, is pivoted to an upwardly extending arm f<4> on the trigger and is urged upwards by a spring L into engagement with the hub c of the recoil lever A. The hub is formed with a flat part a<1> which, when the recoil lever is in the closing position, allows the arm H to rise sufficiently to engage a side projection i<2>, Fig. 6<a>, on the sear by its notch h. If the stop J is adjusted for single-shot firing, as shown in Fig. 2, the pull of the trigger moves the arm forwards and actuates the sear to fire the gun. The recoil lever is then thrown back and its hub c depresses the arm H and disengages it from the sear, which is therefore free to re-engage the percussion lever. For continuous firing, the arm H is moved farther forwards by a longer pull of the trigger and, after the first shot, the sear is actuated when the recoil lever reaches its forward position by the arm H being pressed down on to a lateral inclined projection i, Figs. 6 and 6a, on the sear by means of a projection a on the hub c of the recoil lever.
Patent GB-769378-A (GB)
Title: Positive transfer rotary pumps
IPC: F04C2/40
Filed: 1955-05-06
Abstract: 769,378. Rotary pumps. LE GRAZIE, G. May 6, 1955 [May 17, 1954], No. 13200/55. Class 110 (2). A pump, Fig. 1, of the flexible vane type comprises a rubber rotor 14 mounted in a liner 18, which in turn is adjustably mounted in the pump casing 16 and is manually operable to vary the capacity of the pump and effect reversal of the flow therethrough without reversing the direction of rotation of the rotor. In a modification, Fig. 4 (not shown), the liner is eccentrically bored relative to the casing. The pump of Fig. 1 may be provided with liner holes for idling purposes or two sets of inlet and outlet ports (see Figs. 9 and 10, not shown), respectively. Again, the inlet and outlet ports of the casing of Fig. 1 may be diametrically offset and the liner need only consist of a plate having a projection (see Figs. 12 and 13, not shown), respectively.
Patent GB-234637-A (GB)
Title: Improvements relating to electro-magnetic brakes
IPC: B61H7/08
Filed: 1924-05-29
Abstract: 234,637. North, N. E., and Metropolitan-Vickers Electrical Co., Ltd. May 29, 1924. Electromagnets. - Between the pole-shoes 1, 2 of an electromagnetic track brake is interposed a filling 3 of metalic material of relatively low magnetic permeability, for example, manganese steel. The filling, which may be of a hardness equal to or greater than the hardness of the pole-shoes is secured to the latter by bolts 4, and the filling is flared flush with the surface nf the pole-shoes so as to increase the effective area of the braking surface. In modifications the filling may be welded to the pole-shoes or the shoes and the filling may be stamped from a composite billet.
Patent GB-560252-A (GB)
Title: Improvements in auxiliary air-inlet valve mechanisms for internal combustion engines
IPC: F02D9/00
Filed: 1942-09-21
Abstract: 560,252. Auxiliary air - admission; valves ; actuating Bowden - mechanism. WHALLEY, S. Sept. 21, 1942, No. 13263. [Class 7 (ii)] [Also in Groups XXIX and XXXI] An auxiliary air-inlet valve comprises a flange member 1 adapted to be secured in the induction pipe and having a box-like extension 2 on opposite sides of which are mounted two rotary discs 10 adapted for simultaneous actuation and having ports 13 adapted to register with ports 4 in the box 2. The valve is fully opened when using the engine as a brake by pulling a knob 26, Fig. 3, of the Bowden wire 21 against the action of spring 19 until a collar 42 is engaged by a spring-catch 41. The knob normally bears against a member 29 screwed in to a sleeve 30 slidable in a bracket member 28. When the member 29, being fully screwed in is pulled out till the sleeve is caught by a spring-catch 31, the valve is still closed and may then be partially opened by screwing out the member 29 to admit extra air for normal running. In another form, Fig. 4, spring-catches are dispensed with, and the actuating-knob 44 is adjustable on the rod 37 to determine whether the valve be partially open or fully closed when the knob is released by the operator. The valve may be actuated by an electromagnet controlled by a pushbutton on the dashboard.
Patent GB-956182-A (GB)
Title: Puncture repair material
IPC: B29C73/08
Filed: 1962-04-06
Abstract: 956,182. Puncture repair materials. R. E. HUMPHREYS, and I. L. MARRA. April 6, 1962, No. 13309/62. Heading B7C. [Also in Division D1] A puncture sealing material consists of an elongated strand 12 comprising a loosely knitted sleeve 25 of a non-fibrous material such as polypropylene monofilament, completely embedded in an inner and outer coating of a permanently malleable material 30 such as the polysulphide composition " Thiokol " (Registered Trade Mark). The monofilament and material 30 are chosen to be chemically inert to each other and to rubber. The strand 12 is inserted from a dispenser 16 into the puncture 13, previously treated with adhesive, using needle 15.
Patent GB-1208381-A (GB)
Title: Improvements in or relating to timepieces
IPC: G04B27/00
Filed: 1968-03-19
Abstract: 1,208,381. Clocks and watches. JUNGHANS G.m.b.H. GEB. March 19, 1968 [March 22, 1967], No. 13332/68. Heading G3T. A timepiece, particularly for mounting in a vehicle instrument panel, has a hands setting device arranged coaxially with the hands arbors and extending through the timepiece glass so as to be displaceable to be brought into driving connection firstly with a seconds hand and subsequently with a minute hand. The setting device is operated by pressing the actuating knob 18 against the action of a spring 17 to engage a toothed coupling 19 on the setting spindle 16 with the teeth 21b of a toothed coupling 21 secured to the seconds hand 15, when this hand only requires adjustment. On further movement of the knob 18 the seconds hand 15 and the coupling 21 are displaced along the fourth wheel, arbor 14 against the action of a spring 22 so that teeth 21a of the coupling 21 engage a toothed coupling 20 secured to the minute hand 29 so that the latter may be adjusted. In alternative constructions (a) the setting knob 18 passes through the glass is permanently secured to the seconds hand 15 (b) the toothed coupling 19 is replaced by a fork which can be brought into driving engagement with the seconds hand 15 (c) different means are provided for disconnecting the hands from the clockwork drive during the setting operation.