baber/WOPTO huggingface dataset:
Patent GB-947084-A (GB)
Title: Improvements in or relating to coin-freed mechanism
Inventor: MAXWELL STEWART ALFRED
IPC: G07F15/08
Filed: 1961-03-02
Abstract: 947,084. Coin-freed vending apparatus. FISHER & LUDLOW Ltd. March 1,1962 [March 2, 1961], No. 7624/61. Heading G4V. A coin-freed mechanism for use with vending machines comprises a release member 38 adapted for movement between two positions as a result of actuation of the article delivery mechanism and a rotatable member 16 adapted to be rotated as the result of the insertion of coinage and having peripheral portions located at different distances from the axis of rotation to provide a projection or tooth 17 which in one angular position of the member 16 extends into the path of travel of the release member 18 to prevent movement of the latter into one of its positions and in another angular position of the member 16 is clear of the path of travel to permit such movement of the release member. The mechanism is intended for use as supplementary mechanism in a vending machine having an existing coin-freed mechanism to take account of small increases in the prices of the articles being sold. An index bar 26 for each magazine of the machine is carried by parallel links on a pair of shafts and when any particular ejector is pulled it rotates one of the shafts so that the bar is moved down and a ledge 37 on the bar is moved from its supporting position below the member 38 which projects from a rotatably-mounted shaft 40. A coin falling in the shoot 10 depresses a lever 21 so that a pawl 23 engages front ratchet-teeth 18 on the member 16 and rotates the member until a a projection 17 on it lies below the member 38 and the member 16 is held by a retaining pawl 24. If the ejector is now pulled the downward movement of the bar 26 and ledge 37 allows the member 38 to move down to contact the projection 17. Continued movement of the ejector then causes further downward movement of the bar 26, during the course of which a pawl 32 on the bar engages rear ratchet teeth 19 on the member 16 and rotates it until a space between two teeth 17 again lies below the lever. The front ratchet 18 has flattopped teeth so that a second coin inserted immediately after the first coin only causes the ratchet 23 to move idly on a flat top. Upon returning the ejector, the bar 26 is raised and the mechanism is restored to its initial condition. Should an ejector be pulled without inserting a coin, the downward movement of the ledge 37 results in the member 38 falling down between two teeth 17 of the member 16, the resultant rotation of the shaft 40 being sufficient to project a dog into the path of a member movable with the ejector and so prevent further movement of the latter. By varying the number of teeth on the member 16 and ratchets the mechanism can be altered to require its operation by two coins instead of one.
Patent GB-330566-A (GB)
Title: Improvements in or relating to pneumatic cushions, seats and the like
IPC: B60N2/70
Filed: 1929-03-09
Abstract: 330,566. Mellano, A. V. March 9, 1929. Spring surfaces.-An air cushion for mattresses, seats or saddles is subdivided into chambers some of which are expansible and all of which form part of the seating surface, the expansible chambers B being normally of less depth than the remaining chambers A which support the cushion, so that free space for expansion is provided within the confines of the cushion casing E, F. Rigid or flexible bands or supports G may be provided at the sides or beneath the partitions C of the cushion. Specifications 253,238 and 302,425 are referred to.
Patent GB-1055127-A (GB)
Title: Improved zone refining apparatus
IPC: C30B13/34
Filed: 1964-02-25
Abstract: In the zone-melting of a rod 24 (Figs. 1 and 3, not shown), the lower end of the rod is preheated to induction heating temperature by radiation from a semi-circular strip 52 which is itself heated by an induction coil 26.  During the preheating, strip 52 is out of contact with rod 24 or only makes contact through an insert 56. After the preheating, the lower end of the rod is melted by coil 26 and a seed crystal 36 is raised with rotation into contact therewith, strip 52 being swung into an inoperative position by contact of a rod 60 on a rotating shaft 38 with a rotary arm 62 of an inverted U-shaped rod which carries strip 52.  Coil 26 is then moved upwards a plurality of times.  The last passage may be commenced from within the seed.  The zone-melting may be carried out in a vacuum.  Strip 52 may be of molybdenum, silver or carbon. Rod 24 may be of silicon, germanium or gallium arsenide.
Patent GB-199444-A (GB)
Title: Improvements in or relating to refractory linings for furnaces, and to the production thereof
IPC: C04B35/52
Filed: 1922-03-17
Abstract: 199,444. Cone, E., and Hale, J. W. March 17, 1922. Linings for furnaces &c. are made by combining plastic material in superposed or alternate layers with refractory brickwork, the material being of such a nature that it will become fused or assimulated to the brickwork by the working heat of the furnace. The plastic mass may form a continuous layer between two shells of brickwork, or, as shown in Fig. 2, this intervening layer may consist of alternated masses of plastic material 1 and brickwork 2. The alternated mass form may be used for internal linings, or for hearths. A suitable plastic material for a neutral lining consists of graphite, 50 parts, fire-clay 25 parts, silica rock in three to four inch lumps, 5 parts, magnesite, 5 parts, together with sufficient anhydrous gas tar or gas tar mastic to ensure plasticity. In the composition described in the Provisional Specification the magnesite is omitted.
Patent GB-1154328-A (GB)
Title: Improvements in Vehicle Clutch Control Mechanisms
IPC: F16D48/06
Filed: 1966-05-19
Abstract: 1,154,328. Clutch control. ROBERT BOSCH G.m.b.H. 19 May, 1966 [20 May, 1965; 8 Sept., 1965(2)], No. 7938/69. Divided out of 1,154,327. Heading F2L. The subject-matter is that of the parent Specification 1,154,327, but the claims are directed to the maintenance of transmissible clutch torque at a proportion of maximum transmissible clutch torque for a predetermined interval after shift completion, such proportion being dependent on accelerator pedal position but independent of time lapse after completion of a gear change operation.
Patent GB-1086756-A (GB)
Title: Method of direction-finding
IPC: G01S3/14
Filed: 1965-02-24
Abstract: 1,086,756. Radio direction finding. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Feb. 24, 1965 [Feb. 27, 1964], No. 7952/65. Heading H4D. The acceptance bandwidth of a normal radio direction finder is usually too narrow to pass frequency-modulated signals, and for this reason the invention provides, in a direction finder, having two frequency conversion stages, means whereby, by using a suitably processed portion of the first I.F. signal as the local oscillator signal for the second frequency conversion stage, the frequency-modulation content of the signal under investigation may be cancelled. In the arrangement shown a twochannel input circuit, the terminals 5 and 6 being applied to the C.R.T. indicator platesthe frequency-modulated signal at terminals 1 and 2 is frequency shifted by means of conversion stage 7 and local oscillator 8 to have a control frequency of 10À7 Mc/s. The converted signal then passes to the second conversion stage 3, a subtractive mixer. A part of the frequency-shifted signal is also diverted to amplifier 10 and mixer 16, where its centre frequency is changed to 10À175 Mc/s. This signal is then used as the local oscillator signal for stage 3, such that the frequency modulation contents of the two signals cancel out and an unmodulated signal at 525 kc/s. is produced for passage via I.F. amplifier 4, to the terminals 5 and 6. Any delay in path 10-16 is compensated by corresponding delays 13 and 14. In another embodiment, Fig. 3 (not shown), to stop interaction between oscillator 17 (525 kc/s.) and I.F. amplifier 4, the frequency changing at mixer 16 is done in two stages with lower local oscillator frequencies, adding or subtracting to 525 kc/s. In a third embodiment, Fig. 1 (not shown), the output of amplifier 10 is passed to a frequency discriminator 11, where the frequency modulation information is extracted. The information is then remodulated in frequency modulator 12, on to a signal of frequency 10À175. The resultant signal is used as the second stage local oscillator signal. In a fourth embodiment, Fig. 4 (not shown), the output of amplifier 10 is used to synchronize the output of a synchro oscillator 18, such that it produces a frequency-modulated signal with a centre frequency of 10À7 Mc/s. on 2À14 Mc/s. This signal is then mixed with a signal of 0À105 Me/s., to produce a signal with a centre frequency of 2À035 Mc/s., which signal is frequency multiplied by 5 to produce the desired local oscillator signal with a centre frequency of 10À175 Mc/s.
Patent GB-434741-A (GB)
Title: Improvements in or relating to reversing gears for friction driven machines
IPC: D06F37/36
Filed: 1934-03-13
Abstract: 434,741. Reversing-gearing. LANE, E. J., Kilnwood, Richmond Road, Kingston, Surrey. March 13, 1934, No. 7967. [Class 80 (ii)] Relates to reversing-gearing for frictiondriven machines, e.g. laundry washing machines, provided with a rotary cylinder, wherein it is essential that the numbers of revolutions in forward and reverse running should be equal. Owing to the friction drive it may happen that, due to load variation, the revolutions become unequal and, according to the invention, means are provided for indicating and correcting such inequality. Reversal is effected from the driving means. As applied to a cylinder of a laundry machine, an indicator is provided comprising a pointer d, Fig. 1, actuated from the cylinder through chain b, worm and worm-wheel c and pin-andslot members f, g, the latter so adjusted as to move d only when the revolutions in the respective directions become unequal. Alternatively, the pointer may be moved directly to equal or unequal extents on either side of zero. The correction is effected by adjusting the belt-shifting means to vary the dwell period of a cam. The adjustment may be effected by hand or, as shown, by the indicating arrangement. The belt-striking gear c has a lateral cam extension cl engaged by a pin h carried by a plate i, Fig. 4, let into the face of a worm wheel k driven by a worm k<1> on a sleeve k<2> integral with the loose pulley k<3> which is always driven by the crossed belt even when the latter is on its fast pulley. The worm is therefore constantly rotated in the same direction. The plate i is slotted at i<1>, Fig. 4, to receive a pin l on a member m slotted at m<1> to receive a pin n on the wheel k. The member m is carried by a slide o adapted to be adjusted parallel to the striking rod c either by hand or, as shown in Fig. 1, by a link connected to the indicating gear. Adjustment of the slide varies the periods during which the pin h engages the forward and reverse dwells of the cam. The open belt is shown on a loose pulley k<4>.
Patent GB-714638-A (GB)
Title: Greenhouse
IPC: A01G9/14
Filed: 1952-03-28
Abstract: 714,638. Ventilating greenhouses. WOEHR, A. March 28, 1952 [Aug. 8, 1951], No. 8045/52. Class 137 A greenhouse is provided with fixed glazing and ventilation is effected by the provision of ducts 5 at the gable ends and possibly one or more intermediate ducts 6 for the discharge of air from the greenhouse, fresh air being admitted through openings 10 in the wall 1. Flap valves are preferably provided for the inlets 10 and.the ducts 5 and 6, and the ducts 6 may have horizontal extensions at their lower ends. In the arrangement shown in Fig. 2 a fan 13 is provided at the base of a duct 5 and the speed of the fan may be controlled by a thermostat or alternatively the valves in the ducts 5 may be thermostatically controlled, in this case the fan if provided is switched off when the valves are closed. An air intake 21 with a valve 22 admits fresh air and a conduit 19 joining into the intake 21 enables air in the greenhouse to be recirculated. A fan 20 is provided at the base of the conduit 21 and air passes heating and cooling elements 17 and 18 before entering a distributor 14. The elements 17 and 18 are adapted to be switched on by a thermostat and humidifying means for the air supplied to the distributor may also be provided. The ventilating shafts are made of wood or other low heat conducting material or have double sheet metals with insulation. In a multispan greenhouse the air from the various positions of ventilation may be exhausted into a common ventilating shaft.
Patent GB-213111-A (GB)
Title: Improvements in clinometers and like instruments
IPC: G01C9/08
Filed: 1923-03-21
Abstract: 213,111. Gillie, J. W., and Alexander, F. H. March 21, 1923. Clinometers.-In an instrument of the pendulum type for use on moving vessels, the pendulum is stabilized against acceleration forces by suspending it from a second pendulum of short period. The indicating pendulum A is pivoted on an axis a in a bracket B which constitutes the short period pendulum, being pivoted on an axis b in fixed standards C. Owing to the upward movement of the axis a produced by swinging of the pendulum B the movement oi the rim of the pendulum A becomes approximately horizontal. A scale D on the rim is read against vertical parallel lines on a transparent surface, which may be the cover glass of the case.
Patent GB-403410-A (GB)
Title: Improvements in and relating to the electric propulsion of ships
IPC: B63H23/24
Filed: 1932-03-18
Abstract: 403,410. Systems for transmitting mechanical power. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. March 18, 1932, No. 8085. Convention date, April 17, 1931. Drawings to Specification, [Class 38 (iv).] A ship driven by two or more propellers, the motors of which are supplied from groups of generators associated with Diesel-engines as described in Specification, 348,508, is reversed by de-exciting all the generators and connecting the bus-bars of the groups together, if they are not already so connected, reversing the phase connection to one motor and then re-exciting the generators. When this motor has attained its normal speed in the reverse direction, the same sequence of operations is performed for the other motors successively. Specification 398,495 also is referred to.
Patent GB-1271651-A (GB)
Title: Grinding machine wheel head operating means
Inventor: PALMER RAYMOND LESLIE
IPC: B24B47/20
Filed: 1968-02-20
Abstract: 1,271,651. Grinding. COVENTRY GAUGE & TOOL CO. Ltd. 19 May, 1969 [20 Feb., 1968], No. 8104/68. Heading B3D. [Also in Division G3] A grinding machine wheel head operating means comprises an electric stepping motor arranged for programmed operation and to directly or indirectly drive the wheel head actuating mechanism. The machine may be used to grind threads, gears, splines or other forms, the programme being determined by a punched or magnetic tape. The wheel head 1 carries a grinding wheel 10 which is adjustable to the helix of a thread to be ground by a gear mechanism. 9. The head is slidable on hydrostatic slideways on a base 2 and is movable by a lead screw 12 which has a threaded portion 14 engaging a nut 15 on the base and a splined portion 14a engaging a wheel 13a meshing with a worm 13 driven by the stepping motor 11. The end of the lead screw is formed with a piston 16 disposed in a cylinder secured to the wheel head for effecting rapid advance and withdrawal movements the stepping motor, under the programmed operation effecting fine control and compensation for dressing. The screw and nut may be of the recirculating ball type. The workpiece 5 is carried by a work-table 3 and is rotatable by a face plate 40 connected by high or low gearing 43, change gears 44 and gearing 42 to a motor driven splined shaft 20. The gears 42 are connected by gearing 45 to a lead screw 30 which engages a recirculating ball nut 22 and a thrust bearing 37, the arrangement providing for thread or similar grinding. For compensating for dressing and the like, the nut 22 is rotatable by gearing 34 connected to a differential gear 32 driven either through worm gearing 33 from a stepping motor 31 under programme control or by worm gearing 36 from an induction motor 35. The motors 31, 35 may be operated to effect-spaced apart grinding operations of the workpiece. The grinding wheel may be dressed by a diamond tool 52a carried by a holder 52 vertically adjustable by a re-circulating ball lead screw 53 driven by worm gearing 55 from a stepping motor 51 under programme control. The motor may operate the dresser so that the tool performs a number of passes with force applied at each or either end. A hydraulic actuator may move the tool 52a linearly or arouately or in some other movement in conjunction with the stepping motor for producing a desired profile on the wheel. The tool may be rapidly advanced by an hydraulic actuator and the final feed be effected by the stepping motor. The dresser may have two or more tools for forming the flanks and crest of a V-profile on the wheel. During dressing the grinding wheel is rotated at a slow speed by a motor 56, the main motor 6 being clutched out.
Patent GB-195953-A (GB)
Title: Improvements in or relating to water or like gauges
IPC: G01F23/24
Filed: 1923-03-21
Abstract: 195,953. Boizard, R. April 6, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Indicators, alarm and signal.-An electric lamp inserted in a wall of a water or other liquid container has its contacts so connected and arranged that a circuit is completed through the lamp when the liquid rises to the level of the contacts. Lamps 2 - - 6 are inserted at various levels in a boiler gauge tube 1.
Patent GB-346127-A (GB)
Title: Operating gear for bottom doors of railway vehicles
IPC: B61D7/26
Filed: 1930-03-13
Abstract: 346,127. Wagon doors. BAILEY, R., Ferrers, Chapelthorpe, near Wakefield, and LOFTHOUSE, W., Holmgarth, L upset, Wakefield, Yorkshire. March 13, 1930, No. 8117. [Class 103 (iv).] The doors 2 of a railway wagon are formed of sheet metal, and are strengthened by angle-irons 17 and by the hinges 11, which may be integral with the toothed sectors 9 by means of which the doors are operated. The cross operating shaft 4 passes through a tubular strut 12 across the wagon body.
Patent GB-1500199-A (GB)
Title: Direct radiator loudspeaker systems
IPC: H04R1/26
Filed: 1975-02-27
Abstract: 1500199 Loud-speakers ALLISON ACOUSTICS Inc 27 Feb 1975 [1 March 1974] 8237/75 Headings H4S and H4X A loud-speaker system 10 (Fig. 1A) comprises an enclosure having a closed rear wall 16 for placement against a room boundary wall 28 and side walls 14 extending from the rear wall 16. A low frequency loud-speaker 24 is mounted on a side wall 14, the included angle between the walls 14 and 16 being not greater than 90 degrees. The distance from the centre of the bass loud-speaker 24 to the rear edge of the side wall 14 and to a second edge of the wall 14 adjacent the rear edge is not more than half the smallest outside dimension of the side wall 14. The loud-speaker 24 is of cone type and has an effective frequency range the upper limit of which is substantially equal to, but not greater than, that frequency above which the mounting panel reduces the effective radiation angle of the cone loud-speaker and whose wavelength is equal to twice the minimum outside dimension of the mounting panel. Middle and high frequency loud-speakers 20 and 22 are flush mounted on front wall 12 for good distribution of sound into the room. The loud-speaker system 10 rests on a table 11 near the edge 30 formed by wall and floor. When the system is placed adjacent one, two or three boundary walls (e.g. room walls, floor) a relatively flat frequency response is obtained and acoustic power output is enhanced. Thus the loudspeaker system 10 may be placed on the floor 26 near the wall 28 (Fig. 1B, not shown). In another arrangement (Fig. 2) low frequency loud-speaker 24 is mounted on the top wall 18 of an enclosure 10 supported on a shelf 27 in the corner of a room. Alternatively two low frequency loudspeakers 24 (Fig. 3) driven in phase are mounted on side walls 14a of an enclosure 10 having a rear wall 32. The path length B, along the outside of the enclosure, between the centres C of the two loudspeakers 24 is not greater than about the minimum outside dimension of the panels 14a.
Patent GB-782090-A (GB)
Title: Apparatus for shaping electromagnetic wave-guides
IPC: B21D22/02
Filed: 1956-03-16
Abstract: 782,090. Making wave-guides; stamping. WESTERN ELECTRIC CO., Inc. March 16, 1956 [March 24, 1955], No. 8314/56. Classes 83 (2) and 83 (4). Apparatus for altering the shape of one end portion of a curved electromagnetic wave-guide of rectangular cross-section so that the end portion changes along its length into a circular cross-section includes a die having an L-shaped die cavity the leg of the cavity for receiving the said end portion having diverging flat side walls, a die plate covering the die cavity, a mandrel having a circular main portion and a forward portion which is tapered by providing converging opposite flat side walls on the mandrel and means for forcibly inserting the mandrel into the said end portion when the wave-guide is clamped in the die cavity. The apparatus comprises a base 16 supporting a die 21 having a cavity 26 consisting of a rectangular section 27 provided with a flared extremity 28 to accommodate wave-guides of different curvatures and a section 29 having opposite flat sides tapering from a small rectangular crosssection where it joins the section 27 to a larger semi-circular cross-section at the outer edge of the die. An upper die 31 is bolted to the die 21 and includes a removable insert 33 provided with a semi-circular aperture complementary to semi-circular section in the die 21. The dies are provided with inserts 37 having serrated faces for securely clamping the waveguide in the dies. The mandrel 38 is connected to a piston arm 39 and comprises a circular section 46 tapered as at 47 on opposite sides towards curved end links 58 and 51 which support the curved portion of the waveguide. In operation the inserts 37 are removed from the lower die 21 and a curved rectangular wave-guide is placed on the die cavity and all unoccupied space around the wave-guide is filled with a fusible alloy. The upper die is secured in position and the mandrel advanced to shape the wave-guide as shown in Figs. 9 and 10.
Patent GB-548469-A (GB)
Title: Improvements relating to forging, reheating and like furnaces
IPC: C21D9/00
Filed: 1941-07-02
Abstract: 548,469. Metal-heating furnaces. LOWE, J. S. July 2, 1941, No. 8338. [Class 51 (ii)] Admission of air through the door opening of a forging &c. furnace is prevented by flames formed by gas supplied by a pipe e to a chamber f and through holes g to vertical air passages d arranged beneath the door a.
Patent GB-1387776-A (GB)
Title: Process for preparing acrylic acid
IPC: B01J23/00
Filed: 1973-02-20
Abstract: 1387776 Oxidation catalyst NIPPON KAYAKU KK 20 Feb 1973 [9 March 1972] 8360/73 Heading B1E [Also in Division C2] An oxidation catalyst has the emperical formula: where: A is alkali metal and T is tungsten or antimony; a is 12, b is 0.5 to 6, c is 0 to 6, d is 0.01 to 1.5 and e is a number determined by the valency requirements of the other elements present. The catalyst may be supported, e.g. on silica, silicon carbide, alumina, diatomaceous earth or tibania. The catalyst may be used in the second stage of a two step oxidation of propylene to acrylic acid wherein the first stage catalyst contains Ni, Co, Fe, Bi, P, Mo and oxygen.