baber/WOPTO huggingface dataset:
Patent GB-650796-A (GB)
Title: Piezoelectric crystal elements
IPC: H01L41/18
Filed: 1947-08-15
Abstract: 650,796. Piezo-electric crystals. WESTERN ELECTRIC CO., Inc. Aug. 15, 1947, No. 22769. Convention date, Aug. 16, 1946. [Class 40 (viii)] A zero temperature coefficient ethylene diamine tartrate element has its thickness dimension inclined at from 40-70 degrees to the +Y axis towards the +X, +Z plane and contained in the same plane as the length dimension and the +Y axis, this plane being inclined at 45 degrees to the +Z axis towards the +X axis. The rectangular plate shown has its thickness dimension at 63 degrees to the +Y axis and has a zero temperature coefficient for longitudinal vibration along its length at +27.5 C. The element may be mounted in a sealed container or may be protected by a plastic film deposited from methanol or butanol. Divided electrodes may be applied to produce transverse or harmonic vibration and two plates may be cemented together to form a bending element. Specifications 578,791, 631,345 and 632,515, [both in Group XL (c)], are referred to. The Specification as open to inspection under Sect. 91 also states that a Z-cut ammonium dihydrogen phosphate element may be arranged to have a zero temperature coefficient by cementing a half-wave nickel-iron alloy bar to its major surface. This subject-matter does not appear in the Specification as accepted.
Patent GB-626959-A (GB)
Title: A method of prevention of air leaks and preservation of the inner tubes for pneumatic tyres and an agent for this purpose
IPC: B29C73/18
Filed: 1946-07-31
Abstract: 626,959. Pneumatic tyres. TILLMAN, R. A. W., and ORRE, B. V. July 31, 1946, No. 22869. [Class 144 (ii)] Air leaks in inner tubes for pneumatic tyres are prevented by introducing into the tube an irreversibly coagulable hydrosol, containing particles of deformable, preferably elastic, material, approximately of the same kind as the tube material, and a stabilizing agent having no deleterious effect on the tube material, the amount of the stabilizing agent being such that the liquid remains in the colloidal state under hermetically sealed conditions, but any leaks arising in the tube are sealed by coagulation of the hydrosol pressed out of the tube. The preferred hydrosol is rubber latex preserved with ammonia, although synthetic resin hydrosols may be added when the inner tube is made from polyvinylchloride. Coagulation may be assisted by means of magnesium sulphate, ferric chloride, or acetic acid, preferably mixed with talc and placed between the inner tube and the outer cover.
Patent GB-1492509-A (GB)
Title: Supply circuit for a television receiver
IPC: H04N5/63
Filed: 1976-06-03
Abstract: 1492509 Cathode-ray tube circuits INTERNATIONAL STANDARD ELECTRIC CORP 3 June 1976 [5 June 1975] 22963/76 Heading H4T [Also in Division H2F] To allow isolation of TV receiver circuits from the mains, the horizontal scanning circuit 20 is driven by an isolating transformer 10, and in turn supplies energy to other units, the supply to primary winding 11 being switched alternately on and off by respectively a thyristor switch stage and a control stage sensitive to the total energy demand. Known scanning circuit 20, provided with energy from secondary winding 12 of transformer 10 via diode 24, is driven by horizontal oscillator 18, switching diode-shunted commutating thyristor 23 which via commutating LC circuit 25, 26 causes diode-shunted switching thyristor 22 to turn off. The circuit supplies combined deflection coil and EHT transformer 21, the amplitude of the flyback pulse from which is a function of the energy demand of the complete receiver. The input transformer 10 is supplied from rectified mains supply B via chopper thyristor and diode 13, 14 switched on by the horizontal oscillator 18 via isolating transformer 19, and switched off at a later instant by commutation of current in resonant LC circuit 15a, 16. Winding 15b, isolated from 15a controls the inductance of 15a in transductor 15 and hence its tuning; the control signal from tapping 211 on the EHT output, via control circuit 17, thus ensures that the duty cycle of thyristor 13 is modified according to the total energy demand.
Patent GB-478054-A (GB)
Title: Improvements in air screw propellers
IPC: B64C11/34
Filed: 1937-08-21
Abstract: 478,054. Screw propellers. SOC. ANON. ALFA ROMEO. Aug. 21, 1937, No. 22976. Convention date, April 23. Addition to 460,332. [Class 114] A variable pitch airscrew according to the parent Specification is provided with resilient members forming limiting stops and also with a clutch functioning below a certain speed of rotation. Attached to the propeller shaft a is a rimmed disc h having a number of peripheral partitions l and upon the propeller boss is mounted coaxially therewith a similar disc i carrying partitions m. Between the partitions m and are resilient blocks n which act as cushioning devices when the vanes m approach either side of the partitions l. Screwed into the disc i are pins r which on the outer ends engage a friction surface p keyed to the disc i and adapted to contact with the disc h secured to the propeller shaft. When so contacted, the boss and the shaft move without relative freedom. These screwed rods r are provided with weighted levers t which under centrifugal force tend to screw the rod away as the speed increases and so release the friction clutch device whereby the boss is freed from the shaft and takes both its drive and its pitch setting through the bevelled wheels e, d.
Patent GB-277647-A (GB)
Title: Improvements in devices for regulating the unwinding of the film in cinematographic apparatus
IPC: G03B21/43
Filed: 1927-09-01
Abstract: 277,647. PathÚ Cinema Anciens Etablissements PathÚ FrÞres. Sept. 18,1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Kinematograph apparatus. - In apparatus in which the pay-out spool 3 is not positively controlled, and in which the delivery from the spool is regulated by a roller 5 carried by a pivoted arm 6, the arm is provided with a braking member 9 which is pressed on to the rim of the spool, against the tension of the film 1, by a spring 10. The member 9 may be carried, as shown, between the pivot 8 of the arm and the roller 5.
Patent GB-984735-A (GB)
Title: Scratch and wear-resistant polyester shaped articles
IPC: C08G18/08
Filed: 1963-06-10
Abstract: The surface wear resistance of a shaped article, at least the exterior of which is formed of a cured polyester resin, is improved by treating the surface of the article with sufficient organic isocyanate to react with the surface polyester.  After treatment with the organic isocyanate which may be a mono- or polyisocyanate, preferably an aryl-diisocyanate, the treated surface is heated to a temperature sufficient to promote reaction of the polyester and isocyanate, unreacted isocyanate is then removed from the surface by washing with a solvent and the surface is then preferably cured at an elevated temperature.  Catalysts may be present to increase the rate of the isocyanate reaction. Any cured polyester resin may be used. In the examples:  (1) a panel of cured polyester resin formed from phthalic anhydride, maleic anhydride, propylene glycol and styrene was treated with an 80/20 mixture of 2,4- and 2,6-tolylene-diisocyanate; (2) bowling balls having covers moulded from a polyester resin derived from fumaric, phthalic and adipic acids, propylene and diethylene glycols and styrene are treated with toluene diisocyanate; and (3) a panel of a glass fibre reinforced resin formed from the polyester as in (1) and glass fibre is treated with naphthalene diisocyanate.
Patent GB-207266-A (GB)
Title: Improvements in and relating to the generation of high frequency alternating currents by means of thermionic vacuum tubes and to wireless telegraphic and telephonic signalling therewith
IPC: H03B5/10
Filed: 1922-08-24
Abstract: 207,266. Preston, L. G., and Shuttleworth, N. Aug. 24, 1922. Thermionic generators and modulating systews.-A thermionic valve is caused to generate high-frequency oscillations, without employing electromagnetic or reaction coupling between the external circuits, by the insertion across the grid and filament of a choke or inductance, coil Q of low-resistance and of an inductive value such that it changes the inherent capacity reactance between grid and filament into an inductive reactance, thereby reversing the former phase of reactance voltage, and at the same time increasing the natural voltage drop between the grid and anode. For effective working the product of the inserted grid inductance Q and the inherent gridfilament capacity should be approximately one per cent of the inductance-capacity value of the main oscillatory circuit L, C. As shown in Fig. 1, the high-tension supply H, the main oscillatory circuit L, C and the valve generator are all arranged in series. A grid battery S shunted by a condenser U controls the value of the unidirectional current-flow through the valve. In Fig. 2, the valve V, and oscillatory circuit L, C are both in parallel across the high-tension supply H. A grid leak T shunted by a condenser U and a microphone M for telephony replaces the battery S; or microphonic control may be applied inductively to the coil Q. The value of the inductance Q is critical and signalling can be effected by short-circuiting a series resistance R as shown in Fig. 3. The resistance R may alternatively be shunted across the grid-leak T, Fig. 2. Or signalling may be effected by short-circuiting a portion of the coil Q. The correct inductive valve of the coil Q may be adjusted by means of a variable condenser shunted across it.
Patent GB-450433-A (GB)
Title: Improvements in and relating to electric condensers
IPC: H01G5/06
Filed: 1935-08-17
Abstract: 450,433. Condensers. IDEAL WERKE AKT. - GES. FUR DRAHTLOSE TELEPHONIE, 9, Forckenbeckstrasse, Wilmersdorf, Berlin. Aug. 17, 1935, No. 23175. Convention date, Aug. 27, 1934. [Class 38 (ii)] Points which should have the same, or approximately the same, potential in a condenser are provided with an additional connection of greater conductivity than that of the actual potential carrier. In the variable condenser shown, in which the rotor plates 2 are made of aluminium, a plate distance holder 4 which engages the ports of the plates furthest from the spindle 3, is connected to the spindle by a copper wire 5. This provides a path of low resistance for the currents in the plates and reduces damping when the condenser is used in a high frequency circuit. The additional connection may also be effected by providing one or more of the plates with a good conducting coating which is continued on to the spindle.
Patent GB-769505-A (GB)
Title: Snap action electric switches
IPC: F16H35/14
Filed: 1954-08-10
Abstract: 769,505. Thermal switches. SIGNALSTAT CORPORATION. Aug. 10, 1954 [Aug. 18, 1953], No. 23180/54. Class 38(5) An snap action electric switch utilizes a snap acting vane similar to that described in co-pending Specification 761,713 [Group XXXII], the vane operating means in the present invention comprising a heat expansible element in heat transfer relationship with a high resistance electric conductor which is heated by the uow of current therethrough. The switch may be of the normally open kind in which case the cooperating contacts 25, 35 are carried by the vane mounting member 20 and the vane 10 respectively; the heat expansible member 40 in this case being excluded from the circuit through which current flows to heat the high resistance conductor 30, the arrangement being such that when the contacts 25, 35 close on operation of the vane a low resistance shunt is formed around the conductor 30. Alternatively the switch may be of the kind in which the co-operating contacts 25, 35 are carried by the vane mounting member 20 and the heat expansible member 40 respectively, the heat expansible member 40 in this case forming part of the circuit through which current flows to heat the high resistance conductor 30. In this latter case the heat generated in the member 40 by the passage of current therethrough is not sufficient to cause expansion of the member 40. Various arrangements of the heat expansible member relative to the high resistance conductor 30 are shown in Figs. 3 to 7. In Figs. 3, 4 the heat expansible member is shown at 40; in Figs. 5, 6 at 45a, 45b and in Fig. 7 at 50.
Patent GB-354542-A (GB)
Title: Improvements in or connected with apparatus for cross-winding thread, yarns, or such like
IPC: B65H54/28
Filed: 1930-08-01
Abstract: 354,542. Traverse mechanism for yarn &c. winding-machines. AYRTON & CO., Ltd., W. and BAINES, E. N., Gorebrook Iron Works, Longsight, Manchester. Aug. 1, 1930, No. 23184. [Class 120 (ii).] A laterally sustained thread-guide plate for cross - winding yarn, thread, &c. is reciprocated by a cam e &c. and guided between a machined face on an enclosure drum, and a machined face on a removable cover which is adjustably mounted on the enclosure drum, there being further machined faces on the drum and cover for the adjustment. The traverse cam e on a shaft e<1> is enclosed by the casing a, the thread-guide plate b bearing against machined faces a<1>, h<1> on the drum and on coverplate h respectively, these parts having also contacting machined faces a<2>, h<2>, the adjustment which allows for wear in the bearing faces a<1>, h<1> &c. comprising a slot and a stud h<5> and a screw h<4> which acts against a lug h<3> on the cover-plate. The plate b is also guided by a bored brass boss d sliding on a rod g and has a lug or lugs d<2> for'adjustably spaced antifriction bowls d<3> bearing against the sides of the cam e. The rod g may be conical and engage a conical hole at one end and have an enlarged screw-threaded part at the other secured against the end-face of the drum &c. by a lock-nut.
Patent GB-410732-A (GB)
Title: Improvements in or relating to electric clocks
IPC: G04C3/06
Filed: 1932-08-18
Abstract: 410,732. Electric clocks. FERY, C. J. V., 28, Rue de l'Arbalete, Paris. Aug. 18, 1932, No. 23187. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 30, 1932]. [Class 139.] In a timepiece in which the balance or pendulum is maintained electrically and drives the movement, the contact maker of the impulse circuit comprises a disc mounted eccentrically on the balance or pendulum axis and situated between the forked arms of a lever through which it transmits the drive to the escape wheel. As applied to a watch, the disc 2, Fig. 1, mounted on the balance staff 1, comprises conducting and insulated portions 2<a>, 2b respectively, and the balance comprises astatic magnets 7, 7, Fig. 2, adapted to swing about flat coils 8<a>, 8<b>, but a single flattened coil wound about the lower magnet may be used instead. The coil circuit is closed during clockwise movement of the balance by the portion 2<a> engaging and rocking the form arm 3<a> until the sliding contact is broken by the portion 2b engaging the fork arm. During anticlockwise movement of the disc 2 the circuit is broken, the fork remaining in its terminal position until the arm 3<b> is engaged by the portion 2b and rocked to the other terminal position. The pallets 5<a>, 5b of the fork drive the escape wheel in the usual manner but the anchor escapement shown may be replaced by any other suitable type. In a modified construction the disc 2 is made wholly of insulating material and a conducting strip is secured to a portion of its periphery corresponding to 2<a>, and electrically connected to the balance spindle. As applied to a pendulum clock the disc 15 having conducting and insulated portions 15a, 15b respectively, is mounted on the pendulum 10 which is maintained in oscillation by the interaction between a permanent magnet 12 thereon and a fixed coil 11, or by any other suitable combination of coil and magnet. The fork has diverging arms 16<a>, 16b ending in pins 18<a>, 18b and current is led thereto through a spring 19, the movements of the fork axis 17 advancing the train through an escape wheel.
Patent GB-216761-A (GB)
Title: An improved process for the manufacture of active carbon
IPC: C01B32/336
Filed: 1923-09-17
Abstract: 216,761. Johnson, J. Y., (Badische Anilin & Soda Fabrik). Sept. 17, 1923. No Patent granted (Sealing fee not paid). Carbon; sulphur.-Active carbon, especially suitable for purifying gases from sulphuretted hydrogen by catalytic oxidation with air, is prepared by placing a carbonaceous material, such as coal, anthracite, lignite, peat, wood or cha.rcoal, with or without previous impregnation with alkalies or salts such as potash or zinc chloride, on a permeable layer of fireproof material in a shaft furnace and blowing through the whole hot combustion gases with or without steam with sufficient pressure to agitate the carbonaceous material. In an example, grains of peat charcoal are placed on a layer of pieces of fireclay or quartz pebbles supported by a plate of fireclay in a shaft furnace B, and a blast of combustion gases, produced by blowing fuel in the chamber A with blue gas' and/or air. is passed therethrough. When the temperature has reached 800‹ C., steam is mixed with the combustion gases. The finished carbon is removed by closing the waste nipe F and opening the discharge C, when the charge is blown into the chamber D, which may be filled with an inert gas, such as nitrogen or carbon dioxide. The apparatus is again charged from the chamber E, in which a supply of peat charcoal may be stored and preliminarily dried and heated.
Patent GB-277331-A (GB)
Title: Improved arrangements for protecting electrical windings
IPC: H01F27/40
Filed: 1927-09-06
Abstract: 277,331. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Bernarde, H. L.). Sept. 13, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Cut-out arrangements. - Inductive electrical apparatus, for example transformers, are protected against internal faults between adjacent turns of the windings by means of an auxiliary protective winding 5 around the core and made up of series-connected turns 14, 15 first in one direction and then in the other so that, in normal healthy conditions, the sum of the electromotive forces induced in the protective winding 5 is zero. When one or more turns of the winding 5 become energized by the leakage flux incidental to a short-circuit between turns of the protected winding the balance is disturbed and the resulting current flowing in the winding 5 actuates a relay 6 to break the supply circuit to the transformer.
Patent GB-873343-A (GB)
Title: Apparatus for multicolour printing on bottles or similar hollow articles
Inventor: MEIERHOFER FRIEDRICH ROBERT
IPC: B41F17/22
Filed: 1959-07-08
Abstract: 873,343. Printing on bottles. MASCHINENFABRIK WtNKLER, FALLERT & CO. A.G. July 8, 1959, No. 23442/59. Class 100(2) Apparatus for multicolour printing on bottles or similar hollow articles, especially those of a deformable nature, comprises a conveyer 7 having bearings 9 in which freely rotatable centring pins 12, 13 are disposed, which pins are resiliently mounted axially by means of springs 10, 11 and which serve to retain the bottles 4 to be printed, each pin 12 adjacent to the bottle aperture having an exchangeable conical element 14, the pin 12 and element 14 having bores 16 through which a gaseous or liquid medium can be introduced into the bottle. The conveyer 7 comprises two endless chains which carry the bottles from a feed shoot past an offset printing roller to a delivery shoot. As the pins 12, 13 approach a bottle on the feed shoot a cam track 20 engages a follower 19 on the outer end of the pin 13 and urges it inwards so that a centring member 18 on the other end of the pin engages the base of the bottle and moves the bottle until its neck 15 engages over the conical element 14. The track 20 extends past the printing station to the delivery shoot where the pin 13 is again allowed to move outwards under the influence of the spring I 1 and releases the bottle. During printing by an offset blanket 3 the bottles receive additional support from frusto-conical rollers 23, 24, which are adjustable to accommodate bottles of different sizes.
Patent GB-771783-A (GB)
Title: Improvements relating to travelling loading conveyors for underground mine working
IPC: E21D9/12
Filed: 1955-08-16
Abstract: 771,783. Conveyers. OELLRICH, A., [trading as MASCHINENFABRIK UND EISENGIESSEREI A. BEIEN]. Aug. 16, 1955 [Aug. 17, 1954], No. 23611/55. Class 78 (1). [Also in Group XXI] To allow the entry of the leading end of an endless conveyer 1 beneath a mineral face which is to be brought down and loaded on to the conveyer there is mounted on the conveyer framework at said end rotary boring means 2, the boring means being driven from the reversing shaft of the conveying means to form a bore of such a configuration that the end of the conveyer may enter therein. The boring means may comprise a single rotatable boring head or a pair of rotatable boring heads so disposed alongside each other that the cutting circles of said heads overlap, the drive from the reversing shaft to each head being by way of a clutch and a gear drive. In one form of the conveyer the frame is formed of a series of shaped or articulated sections, the order of which may be varied to provide different degrees of offset between the leading and rear ends of the conveyer, which is so mounted on a carriage as to be swingable laterally thereof. A drive 8, 10 from the conveyer motor is provided to the endless tracks 9 of the carriage and the leading end of the conveyer is supported on skids. In another form the conveyer comprises two separate endless conveyers, the boring tool-supporting conveyer being driven from the reversing shaft of the other and connected to the latter so as to be capable of swinging relatively thereto. The endless track-supported carriage may be replaced by a frame mounted on a skid, and having an adjustable lateral support that permits of varying the lateral inclination of the conveyer.
Patent GB-1165674-A (GB)
Title: Improvements relating to Coil Holders
Inventor: WYLE GEOFFREY PHILLIP
IPC: B21C47/24
Filed: 1966-05-26
Abstract: 1,165,674. Creels. PRICE MACHINE GUARDS Ltd. [trading as SAFE PRODUCTION SYSTEMS]. 23 May, 1967 [26 May, 1966], No. 23614/66. Heading D1J. A coil holder comprises a yoke 12 rotatable on a stand 10, the yoke carrying on each of its two arms a rotatable coil holder 21, each coil holder being tiltable about an axis perpendicular to both its rotational axis 17, 18 and the axis of rotation of the yoke 12.
Patent GB-517941-A (GB)
Title: Improvements in means for playing card games
IPC: A63F1/02
Filed: 1938-08-11
Abstract: 517,941. Playing-cards. TAYLOR, E. H. Aug. 11, 1938, No. 23702. [Class 132 (ii)] Means for playing a card game comprises a number of suits of seven cards, say, astrological symbols of favourable and unfavourable influence, Figs. 4, 8, e.g., the sun, moon, Jupiter Venus, Mercury and Neptune of favourable influence and Uranus, Saturn, Mars, of unfavourable influence, a further suit of trumps, five in number, Fig. 10, bearing symbols representing the virtues, e.g., Charity, Faith, Hope, Temperance and Fortitude or of constellations. The higher numbered cards in the favourable suits are of greater trick value and the lower numbered ones in the unfavourable and trump cards may be played at any time. The scores are entered in a sheet in nine columns and a list of fortunes appropriate to each score is provided. In scoring each player adds to his trick points a figure representing the week of the month and the quarter of the year in which his birthday occurs. The game may be played to obtain as many as possible ,points with cards of good influence, this being the net surplus favourable over unfavourable scores.