baber/WOPTO huggingface dataset:
Patent GB-113565-A (GB)
IPC: H04M1/08
Abstract: 113,565. Petithory, E. A. July 6, 1917. Telephones, mounting and supporting.-The unintentional operation of the hook or cradle switch of a telephone is prevented by the employment of a delay device between the operating lever and the switch contacts. In the arrangement shown in Fig. 1<a>, a cradle stem c is moved upwards through a conical block e by the action of a spring d when the telephone is removed from the cradle. The stem c is provided with a pin o adapted to engage projections t s, on a disk m between which the pin o lies when the stem c is depressed. The disk m is also provided with pins q, r which are adapted to engage an arm p resting on the block e. The disk m is controlled by a spring n which gives the disk a rapid movement as the spring passes over the dead-centre. Normally, the block e is depressed by the arm p and in this position causes the contacts f, h and i, k to be in engagement. When the telephone is removed, the pin o engages the projection s and rotates the disk m until the spring n passes over the dead-centre, when the disk m is given a rapid movement and the pin q engaging the arm p allows the block c to rise under the resilience of the contacts h, k to close the contacts h, g and k, j. When the telephone is replaced, the reverse action takes place. In the modification shown in Fig. 2<a>, the contact h is directly operated by the arm p, the position of which is controlled by a rotary member m carrying pins q, v adapted to engage the arm p, and projections s, t adapted to be engaged, by a projection o on the stem c. In the modification shown in Fig. 3<a>, the position of a member w is controlled by the telephone hook and a spring d. A pin o on the member w engages a recess in the disk m, the rotation of which controls the position of the contact h through the arm p. In the modification shown in Fig. 4, the stem c is connected to bell-crank levers p by springs n. The arms of the levers p bear upon contact levers h and the arrangement is such that, when the springs pass below the line joining the pivots x, the levers h are given a rapid movement. In the modification shown in Fig. 5<a>, a conical block c is slidably mounted on the stem c between collars s, t. When the telephone is removed from its cradle, the collar s, which normally engages the top of the block c, leaves the latter and finally the collar t engages the block to raise it, thereby operating the contacts h, k.
Patent GB-768972-A (GB)
Title: Improvements in or relating to hydraulic guns for driving blind rivets and the like
IPC: B21J15/02
Filed: 1955-04-20
Abstract: 768,972. Blind riveting. HUCK MANUFACTURING CO. April 20, 1955 [April 27, 1954], No. 11390/55. Class 83 (4). [Also in Group XXIX] A pull gun for driving blind rivets or like fastening devices is actuated by a hydraulic motor to which liquid is continuously supplied, the motor being stopped or started according as a by-pass between the inlet and the outlet passages to the motor is opened or closed. The by-pass is controlled by a valve 70 which is opened or closed by manual rotation of a sleeve 216. The motor, comprises a doubleacting piston 46, the rod 47 of which has shoulders engaging an arm 270 of a bell-crank lever, the arm 272 of which co-operates with flanges on an anvil holder 286. A fastendevice, comprising a pin 22 with a head 24, is held in a chuck 302, and during a stroke of the piston 46 to the left the anvil holder 286 is moved downwards relatively to the chuck, drawing the shank of the pin through holes in plates 28, 32 and moving a collar 30 downwardly over the pin 22. When the piston moves to the right the anvil holder is raised, the chuck moves upwards slightly and opens to allow the pin 22 to rise, On the piston again moving to the left the chuck closes, gripping the pin nearer to its head. When the desired pulling force is obtained the collar 30 is locked to the pin 22 and upset against the plate 32 and the shank of the pin 22 is broken at a weak portion adjacent the collar. Specification 629, 098, [Group XXV], is referred to.
Patent GB-216306-A (GB)
Title: A mine or lift cage slipper
IPC: B66B7/04
Filed: 1923-04-28
Abstract: 216,306. Bonsall, E., and Wright, W. April 28, 1923. Cage lifts.-The slippers are made in two parts held together around the guides a by bolts c and contain a number of balls b running in a race e. Lubrication is effected through the hole g.
Patent GB-1209818-A (GB)
Title: Rear-hinged drop shelf mechanism for vending machine
IPC: B65H1/28
Filed: 1968-03-08
Abstract: 1,209,818. Dispensing articles. VENDO CO. 8 March, 1968 [7 Sept., 1967], No. 11576/68. Heading A4T. Horizontal shelves 12 of a vending machine are mounted on pivots 18 so as to be swingable to inclined article discharge positions, e.g. 12b, 12c successively one at a time from bottom to top on actuation of a lever (70, Fig. 4). Each shelf, except the bottom one, is normally maintained horizontal by an extension 54 of a latch 34, hinged thereto at 40, engaging a lug 30 of the shelf below. The bottom shelf is normally held slightly inclined (as shown by shelf 12d) by a latch portion 44 engaging an edge 68 of a keeper 62 of a common rotatable device 20. To discharge an article 106, lever (70) is pulled against a spring (76) and, through a linkage comprising a pin (72, Figs. 4, 6) on lever (70), a pivotable plate 78 carrying a stud 86 and a yoke 90 on device 20, causes device 20 to rotate to the left, Fig. 1. The bottom shelf tilts more as edge 68 moves over portion 44 and a latch finger 46 moves up into engagement with keeper edge 64. When lever (70) is released, device 20 automatically returns to its rightmost position, Fig. 1, and portion 44 of the bottom shelf is cammed by keeper step 66 out of keeper 62 against a spring (50, Figs. 5, 9) and finger 46 is forced from beneath edge 64 so the shelf drops to discharge an article, lug 30 leaving extension on 54. Since the shelf next above is not now supported by lug 30 below it drops to the position of shelf 12d. When the top shelf has discharged, it pivots a lever 92, which, through a rod (100, Fig. 8) actuates a lever (102) into blocking engagement with lever (70). Plates 58 on shelves 12 prevent tampering by a wire. For reloading, the shelves are raised successively from the bottom, latches 34 snapping into keepers 62.
Patent GB-1412037-A (GB)
Title: Casemaking machinery
IPC: B65H31/24
Filed: 1973-03-09
Abstract: 1412037 Delivering sheets HENRY SIMON Ltd 4 March 1974 [9 March 1973] 11582/73 Heading B8R Flattened case-making blanks are conveyed between pairs of bands 13, 14, Figs. 1 and 2, to a rotary longitudinal slitter 15 which divides them into two parts, and the side-by-side pairs of parts are formed into overlapping streams on belts 17 by friction wheels 16, maintained flat by guide rollers 18, and fed past a counter on to a plurality of belts 19. Arms 20 intermittently move up between the belts 19 to engage behind selected parts, in response to the counter, and move forwards faster than the belts so as to form all the parts in front into two side-by-side stacks comprising a counted and equal number of parts, the stacks being thereafter carried by belts 21, which may diverge, to different destinations.
Patent GB-541670-A (GB)
Title: Improvements in or relating to impregnated fibrous products and methods of making same
IPC: D21J3/00
Filed: 1940-07-12
Abstract: 541,670. Impregnated paper, board &c. HERCULES POWDER CO. July 12, 1940, No. 11662. Convention date, May 16. [Classes 96 and 140]  Paper or board, e.g. for roofing shingles, or box toe, roofing, or flooring felts, heat and sound insulation building boards, or mulching paper, is made, e.g. from old rags or paper, wood pulp, straw or jute, with clay, talc, bentonite, asbestos, slate dust or silica flour, to which is added e.g. during heating, 1 to 50 per cent. of a pulverized pine-wood resin fraction substantially insoluble in petroleum hydrocarbon, and the pulp formed into sheets or articles which are dried and immersed in asphaltic material, coal tar pitch, tar, oil, wax, resin &c. at a temperature above the flow point of the pine-wood resin fraction, e.g. at 400 to 475‹F. The pine-wood resin fraction may be obtained by dissolving in " gasoline and furfural, allowing to settle, removing the furfural layer, and distilling off the furfural. Specification 539,706 is referred to.
Patent GB-238286-A (GB)
Title: Improvement in inking rolls and method of and apparatus for renewing the surfaces ofsame
IPC: B41N7/00
Filed: 1924-05-12
Abstract: 238,286. Davis, A. B. May 12, 1924. Inking-apparatus. - An inking-roller of the kind comprising a core of resilient material having an outer coating of printers' roller or like composition is formed by applying the composition to the core in a molten state and allowing the surplus to drain in an endwise direction from the roller. Fig. 2 shows an inking-roller formed of a main body of rubber 20 provided with a coating of roller composition 21, the ends of the body being rounded to prevent accumulation of the coating material. The roller composition may be composed of glue, molasses, glycerine, and Venice turpentine, satisfactory proportions of which are 8¢ lbs. of glue, 2 gallons of molasses, 1 pint of glycerine and 2 ounces of Venice turpentine. The coating - apparatus shown in Fig. 1 comprises a frame 1 fitted at one end with uprights 3 and cross bars 4 to which a slotted upright 7 is adjustably secured by bolts 5 and wing nuts 6. A bearing is provided at the top of the upright 7 to secure one end of the shaft 10 of the roller R, the other end of the shaft 10 being held in a bearing 11 on a member 12 adjustably secured by bolts 9<1> to the sides of the frame. Molten roller composition is poured from a container 17 along the length of the roller, which is rotated meanwhile by a crank 15. The surplus coating material draining from the roller is caught in a trough 13 and collected in a receptacle 19.
Patent GB-1370165-A (GB)
Title: Process and apparatus for controlling vehicles moving in succ ession along a track
IPC: B60Q1/52
Filed: 1972-03-14
Abstract: 1370165 Vehicle control MESSERSCHMITTBOLKOW-BLOHM GmbH 14 March 1972 [26 March 1971] 11784/72 Heading B7N Transmitter 4<SP>1</SP> on leading vehicle 2 on track 3 transmits rearwards a signal having an amplitude inversely proportional to its speed which when received in receiver 5, having a sensitivity directly proportional to the speed of following vehicle 1, is used to regulate the speed of said following vehicle. Speed measuring device 7 on each vehicle provides an output which controls transmitter 4 to supply maximum output when the speed is zero and minimum output when the speed is maximum and controls receiver 5 to low sensitivity when the speed is low and maximum sensitivity when the speed is a maximum. The device 7 also provides one input x to a speed comparator 8. The second input y to the comparator from receiver 5 is a function of the vehicle speed, the speed of the ahead vehicle and the distance between vehicles and forms a reference with which signal x is compared to provide vehicle speed control signals. Track side transmitting elements can be provided to reduce the speed of a vehicle by simulating a vehicle in advance travelling at reduced speed and trackside receiving devices can be provided for ascertaining the speed of individual vehicles.
Patent GB-1191235-A (GB)
Title: Improvements in and relating to fluid-conducting rotary unions
Inventor: WALKER GORDON RICHARD
IPC: F16L27/08
Filed: 1968-03-11
Abstract: 1,191,235. Rotary pipe couplings. FILTON Ltd. 11 March, 1968, No. 11798/68. Heading F2G. In a rotary pipe coupling of the kind which includes a rotary contact seal formed by a floating element 10a, which is loaded by a spring 35 and is axially slidable but non-rotatable, and a collar 9 on the end of a hollow rotatable shaft 1, sealing being effected between radial faces 8, 10 of the collar and floating element, respectively, the collar 9 is formed integrally with the shaft 1 which is passed from the inside of a split casing 2 through a thrust bearing 13 and a set of needle rollers 12, for which it provides the inner race, the free end of the shaft being provided with an annular recess 22 so that a screwed connector 17 can be secured to the shaft externally of the casing by the use of a nut 20 and a split ring or collet 21 having a conical surface 23 which engages a similarly formed aperture in a flange 24 of the nut 20. A pipe (not shown) may then be attached to the connector 17 by means of screw thread 18. The collet 21 is preferably of brass and its surface 23 may be coated or covered with a low friction, e.g. plastics, material. The portion of shaft 1 which provides the inner race for the needle rollers 12 is surface hardened, e.g. the shaft is made of nitralloy and the surface nitrided. The radial face 8 of the collar 9 is hard lapped. The floating element 10a is of softer material, e.g. brass and slides in an aperture in a carrier 5 which is fitted between the two halves 3, 4 of the split casing 2, the whole assembly being secured by bolts 6. Sealing of the element 10a is effected by 0-ring 11 which is prevented from being squeezed into the clearance between element 10a and the carrier 5 by a plastics ring 30, while a further plastics ring 31 retained by circlip 32 retains the seal within a recess 29. A further 0-ring 36 seals a chamber housing the spring 35 and communicating with a port 7 from the interior of the shaft and element 10a. A thrust sleeve 33 is preferably interposed between the spring 35 and element 10a.
Patent GB-1489644-A (GB)
Title: Method for making a cathode-ray tube
IPC: H01J9/385
Filed: 1975-03-21
Abstract: 1489644 Cathode-ray tubes RCA CORPORATION 21 March 1975 [25 March 1974] 11898/75 Heading H1D To improve degassing of a CRT, r.f. energy and heater current are applied to the cathode sequentially then simultaneously to increase the cathode temperature to 950 C. whilst the tube is baked at 300-450 C. and evacuated. H.f. energy of 1 to 1À5 mhz. degasses the cathode; the heater current decomposes the cathode coating material. The tube is passed through a tunnel furnace during the degassing.
Patent GB-359570-A (GB)
Title: Improvements in the manufacture of bearing metals
IPC: C22C9/04
Filed: 1931-05-19
Abstract: A bearing-metal consists of a copper-silicon-zinc alloy containing 65-80 per cent of copper and 2,6 per cent of silicon, with or without 0,1-3 per cent of tin.  An example consists of 76 per cent of copper, 20 per cent of zinc, 3 per cent of silicon, and 1 per cent of tin. Specification 352,639 is referred to.  Reference has been directed by the Comptroller to Specification 350,889.
Patent GB-216145-A (GB)
Title: Improvements in luminous elements for signs, decorative purposes and the like
IPC: G09F13/06
Filed: 1924-05-15
Abstract: 216,145. Mayer, A. May 19, 1923, [Convention date]. Letters and the like; signs.-Letters &c. are made up of elements 2, each of which comprises one or more shanks protruding into an illuminated box and a ground or unpolished head 1 on the external surface 3 of the box. Light striking the protruding shank ends is diffused into the heads of the elements. Glass, melted quartz, opaline, crystal glass, and soft porcelain are mentioned as suitable materials, and may be coloured. According to the Specification as open to inspection under Sect. 91 (3) (a), the heads may be faceted. This subject-matter does not appear in the Specification as accepted.
Patent GB-171946-A (GB)
Title: Improvements in and relating to louvre ventilators
IPC: F24F13/15
Filed: 1921-04-26
Abstract: 171,946. Haden, W. N., and Haden, C. I. April 26, 1921. Valves and valve apparatus, actuating. - Louvers, especially those employed in connection with the fresh-air inlets of radiators, are simultaneously operated by means of a bar 5 mounted adjacent to the pivoted edges of the louvers so as to be capable of endlong movement only, and formed with recesses to engage small projections 7 from those edges. These projections are preferably formed by bending a stout wire, as shown in Fig. 2, which may be prolonged at 16 to serve as the pivot of the louvers. The bar is connected to a lever 10 mounted on a bracket attached to the screen 13 of the radiator. The free edges of the louvers are formed as shown to overlap the pivoted edges of the adjoining louvers.
Patent GB-201247-A (GB)
Title: Improvements in or relating to gramophones
IPC: G11B25/04
Filed: 1922-04-28
Abstract: 201,247. Cullum, H. J. April 28, 1922. Cases with internal horns.-Relates to portable gramophones of the kind in which the tone-arm is carried on a platform which is tilted into the sound chamber when the lid d is closed. According to the invention, the tone-arm is of the kind which is provided with a goose-neck g<1> at its free end, the arrangement being such that when the tone-arm is folded back upon its horizontal pivot, it may be lowered with its platform into the sound chamber f. The overhanging edge j<2> of the platform j is arranged to abut against a fillet j<3> and act as a stop to the platform which is connected by links n, o to the lid. A pin r on the extremity of the tone-arm is engaged in a notch in a catch-plate s prior to folding. Specifications 20717/14 and 183,327 are referred to.
Patent GB-1500793-A (GB)
Title: Toothed gearing
IPC: F16H55/08
Filed: 1975-03-21
Abstract: 1500793 Toothed gearing W S ROUVEROL 21 March 1975 [22 March 1974] 12000/75 Heading F2Q Each wheel of a pair of mating gears 12, 14, Fig. 1, has helical or spiral teeth 11, 13 of profile differing from involute form, in that contact between adjacent teeth is limited to an elliptical contact area 24, Fig. 4, the ellipse being generally centred about the pitch point P, by use of arcuate tooth profile radii r 1 , r 2 , which are smaller than the corresponding involute radii PQ 1 , PQ 2 , by the ratios K 1 =r 1 /PQ 1 , and K 2  = r 2 /PQ 2 , with the overall characteristic that the "profile radius coefficient" K, defined as has a value less than unity, where G is the gear ratio, together with the additional characteristics that the pressure angle is less than 40 degrees, that the addendum height exceeds the value 0À5 divided by the diametral pitch, and that the "tooth utilization ratio", defined as the ratio of contact ellipse height (measured normal to the pitch surface) to the tooth working depth is substantially unity, where an elliptical area of tooth contact in elastic deformation results from an application of a full load torque of a magnitude appropriate to incipient yield stress point failure at the tooth root, and the ellipse height and working depth are measured as difference dimensions between radial distances from the gear axis. For a given load torque, tooth shapes may be chosen which not only provide a reduced ellipse height and working depth but also expose the tooth flank surface to higher local compressive stresses than those commonly found in gears of involute tooth form. A choice of reduced tooth depth also favours the design of gears having increased numbers of finer teeth for sharing a given load. Equations are disclosed for the selection of design parameters for the adaption of gear tooth profiles which incorporate these features- In particular, means are provided for determining a "critical profile radius coefficient". giving a maximum permissible compressive stress at the contact ellipse centre, and a "critical number of teeth" for which the gears become subject to a maximum permissible compressive stress combined with a maximum bending stress, thereby optimising the load torque capacity of the gears. It is stated that gears designed in this manner also provide a reduction in meshing noise generated in use.
Patent GB-857586-A (GB)
Title: Small-oil-volume high-voltage circuit breaker
IPC: H01H33/56
Filed: 1957-04-12
Abstract: 857,586. Oil-break switches. FABRIEK VAN ELECTRISCHE APPARATEN VOORHEEN F. HAZEMEIJER & CO. N.V. April 12, 1957 [April 26, 1956], No. 12029/57. Class 38 (5). In a small-oil-volume switch having an operating crank 6 driven by a shaft 17 extending through the walls 5 of the tank, the crank 6 has a bushing 8 with a non-circular opening fitting on the similarly profiled shaft. The bushing is supported by ball-bearings 11 in bearing sleeves 10 with packing-rings 14 forming oil-tight seals between the bushing 8 and the sleeves 10. Thus the shaft 17 may be mounted or removed without affecting the oil-seals of the tank and in a multi-phase arrangement a single one-piece shaft may extend through all the individual switches.
Patent GB-234275-A (GB)
Title: Improvements in and relating to skips and like conveyers
IPC: B66B17/26
Filed: 1924-05-16
Abstract: 234,275. Schmied, F. May 16, 1924. Shoots.-A shoot g is attached to the bunker e by a hinge f and is retained in the position shown by a locking device h. As a skip i descends, it releases the locking device h and the shoot swings downwards and rests on the edge k of the skip, in which position passage of the material from the bunker to the skip takes place. On the upward journey the skip carries the shoot with it until it is engaged by the locking device.
Patent GB-887256-A (GB)
Title: Fuze for underwater explosive charges
IPC: F42C5/00
Filed: 1960-04-06
Abstract: 887,256. Depth charges and fuzes therefor. MENYA Y VIEYRA DE ABREU, J. April 6, 1960 [April 6, 1959], No. 12182/60. Classes 9(1) and 9(2). A hydrostatic fuze for a depth charge comprises a head part 7 housing safety elements together with a detonator and having a tubular extension 13 to which is screwed a casing 17 housing an annular booster charge 16 surrounding a firing pin 18. The fuze extension 13 is screwed into an axial socket in the depth charge. Within the tube 13 is the detonator 21, 22 suspended from a piston 26, which is immobilised by balls 33 protruding from transverse bores 31 under the influence of springs 30 surrounding the stems of locking bolts 28. A cap 8 covering the head 7 is used to set the fuze for operation at a given depth and is secured by balls 25 pressed into a groove 24 by springs 9 compressed by screws 10. Within the cap are cam surfaces 27 which bear against the bolts 28 and, as the cap is rotated, vary the pressure on the balls 33. To prevent rotation of the cap, a ball 25 with its spring may be replaced by a screw sufficiently long to engage the groove 24. An inertia safety device 5 bears against balls 3, housed in openings in the piston, and forces them against a shoulder 4 to immobilise the piston. When the mass 5 is forced downwards by hydrostatic pressure on its upper surface, the balls 3 are freed. During transport a safety spring 2 is threaded through a ring on the mass 5 and openings in the piston 26 to prevent accidental release of the mass. Before launching the depth charge, the cap 8 is rotated to the required setting indicated by a scale on the rim of head 7. A closure 1 is then removed and the safety pin 2 withdrawn. As the charge sinks, the pressure on the mass 5 unlatches the balls 3 and, when the downward thrust on piston 26 is sufficient to overcome the inward pressure on balls 33, the piston moves downwards carrying the detonator against the pin 18 after rupturing a diaphragm 19. To prevent premature movement of the mass 5 due to shock waves produced by adjacent explosions a valve may be arranged above the mass in such a way that the shock wave closes the valve and prevents the ingress of liquid to the depth charge. The valve is restored to the open position by a spring when the excess pressure on the valve ceases.