baber/WOPTO huggingface dataset:
Patent GB-1402992-A (GB)
Title: Building blocks
IPC: E04B2/22
Filed: 1972-07-18
Abstract: 1402992 Building blocks R A CLARK & M B CLARK 18 July 1972 11058/75 Divided out of 1402991 Heading E1B A building block of keyhole cross section has opposite faces formed with interengaging projections and recesses, such that the blocks actually come into contact only along strip areas 17 adjacent their long faces, whereby the blocks can be laid to form curved walls with alternating courses offset from one another. The blocks may also be used to form pillars at the end of straight walls. Apertures 16 in adjacent courses may be aligned and receive concrete. Cylindrical blocks for use in conjunction with the blocks may be provided.
Patent GB-196807-A (GB)
Title: An improved window-operating device
IPC: E05F11/48
Filed: 1922-04-20
Abstract: 196,807. Brougham, F. J., (Perfect Window Regulator Co.). April 20, 1922. Sliding window opening and closing apparatus.-In window opening and closing apparatus of the kind having sprockets and an endless chain carrying a stud &c. engaging a slotted bracket on the window, the plate 3 on which the upper sprocket 4 is carried has a projection 16 thereon to engage the stud 12 when the window is raised, and thereby to prevent the stud from being forced out of the slot. A stop 17, having an adjusting screw 21, is secured to the chain and adapted to engage the projection 16 and act as a stop for the lowered position. The stop 17 has limbs with inturned ends engaging slots 9 in the links, or depressions engaging holes therein, and the limbs are secured by a screw 21 passing through registered holes in four flanges bent inwardly from the limbs. The lower sprocket 6 is carried on a plate 5 secured at the end to a cross-piece 7.
Patent GB-798256-A (GB)
Title: Improvements in or relating to four-terminal networks and to signal distribution systems incorporating such networks
Inventor: O'DONOVAN HARRY MAURICE
IPC: H01F19/00
Filed: 1953-11-02
Abstract: 798,256. Impedance matching networks. PYE, Ltd. Oct. 6, 1954 [Nov. 2, 1953], No. 11196/56. Divided out of 798,255. Class 40(8). The leakage inductance of a transformer and the input capacity of a valve are combined with other circuit elements to form a matching network between the valve and a transmission line having a flat frequency response over a range of about one megacycle. The transformer has, say, primary and secondary inductances L1, L2 and a coefficient of coupling k, the resistances of the windings being negligible compared to the other impedances. A load Z2 is connected between the secondary terminals. Fig. 2 shows an equivalent circuit in which the transformer is replaced by an ideal transformer of ratio a=k#L2/L1, and for which the coupling coefficient is unity. The primary and secondary inductances of the ideal transformer are infinite. The leakage inductance (1 - k<SP>2</SP>)L2 is now combined with Z2 which consists, say, of the valve input capacitance and secondary winding capacitance amounting to C2 to form the half-section band-pass filter network shown in Fig. 3. The leakage inductance is absorbed in a<SP>2</SP>L<SP>1</SP>, forming part of the series resonant branch. In the circuit as realized in practice the leakage inductance (1 - k<SP>2</SP>)L2 is left on the secondary side and the remainder of the series resonant branch consisting of 1/a<SP>2</SP>C1 and a<SP>2</SP>L<SP>11</SP>1 = a<SP>2</SP>L<SP>1</SP>1 - (1 - k<SP>2</SP>)L2 is transferred to the primary side. The impedances so transferred are multiplied by 1/a<SP>2</SP> and are split into half impedances in order to obtain a balanced circuit in the manner described in Specification 798,255. The result is shown in Fig. 5 in which The Specification described the formation of filters of the band-pass constant-k type and it is stated that the invention may also be applied to filters of the M-derived type.
Patent GB-494077-A (GB)
Title: Improvements in and relating to temperature control devices
IPC: G05D23/275
Filed: 1938-04-12
Abstract: 494,077. Thermal switches ; thermostats. BRITISH THOMSON-HOUSTON CO., Ltd. April 12, 1938, No. 11223. Convention date, April 16, 1937. [Class 38 (v)] [Also in Group XIII] The heating elements 8, 8 of an electrically heated fluid container 2 are controlled by switches 6, 61 actuated a different temperatures by diaphragms 3, 3<1> forming par of the container. When, for example, the medium has beer heated to 50‹ C., the diaphragn 3 opens the switch 6, and wher it has been further heated to 85‹ C., the diaphragm 31 opens the switch 6<1>. The diaphragms may differ in thickness, dimensions, shape or substance.
Patent GB-1089235-A (GB)
Title: Device for the continuous manufacture of bags from a synthetic material
IPC: B31B23/00
Filed: 1965-03-17
Abstract: 1,089,235. Endless conveyers. L. VAN DER MEULEN. March 17, 1965 [March 20, 1964], No. 11242/65. Heading B8A. [Also in Division B5] Extensible links 18, Figs. 1, 2, in co-operating sets of chains 1, 2, allow the chains to be extended as shown by the dotted lines in Fig. 1, so that bags of variable size may be produced (see Division B5), from a multi-layer web 14, passing between the chains. In the embodiment, driven friction wheels 3 and 5 are fixed on the frame 8 while the position of freely rotating friction-wheels 4, 6, may be altered by rotating a hand wheel 12 attached to a spindle 11 co-operating with a sliding member 9 on which the wheels are mounted. The chains 1, 2, Figs. 2, 3 (latter not shown), each consist of two parallel chains 25 interconnected through cross-bars 21, and built from alternate rigid links 17 and extensible links 18, the latter consisting of cross-strips 19, with springs 20 provided between the links 18. The cross-strips 19 are pivotally connected to rotatable and slidable sleeves 23 and rotatable but non-slidable sleeves 22. Carriers 26 are mounted in the vicinity of each rigid link 17, and grip the web in the path 13. Ball-bearings 24 disposed at the ends of the bars 21 co-operate with extensible guide strips 25. In further modifications the central part of the connecting rods 21 may be omitted except at the location of the heat sealing members 27. Further the wheel 6 may be replaced by a guide, bent through 180 degrees. The cross-strips 19 may be disposed on either side of the sleeves 22, 23. The springs 20 may be provided between the sleeves 23 instead of between the intersections of the cross-strips 19. Finally the wheels 4, 6, may be fixed, further movable wheels being provided by which the chains may be extended.
Patent GB-108677-A (GB)
Title: Improvements in or relatng to Artificial Horizons.
IPC: G01C19/44
Filed: 1917-08-03
Abstract: 108,677. Anschutz & Co. Aug. 5, 1916, [Convention date] . Gyroscopic apparatus.-The mirror s of an artificial horizon is maintained horizontal by means of a gyroscopic-top apparatus such as shown which is constructed so as to describe the precession cone in approximately 84 minutes (the time of oscillation of a simple pendulum of a length equal to the radius of the earth). Specification 4891/14 is referred to.
Patent GB-685820-A (GB)
Title: Cutting insert for percussion drills
IPC: E21B10/58
Filed: 1951-05-15
Abstract: 685,820. Percussive drills. SANDVIKENS JERNVERKS AKTIEBOLAG. May 15, 1951 [June 22, 1950], No. 11320/51. Class 124. A cutting insert, preferably having a ground base surface, is provided on its side faces with at least two spaced protuberances having ground or otherwise machined surfaces. As shown, an insert 10 has two protuberances 12 on each side face 11, spaced from one another and arranged nearer the ends than the middle of the insert. When the insert is placed in a groove in a drill bit, the protuberances centre it and the brazing metal will be equally distributed on either side.
Patent GB-309603-A (GB)
IPC: B65B13/34
Filed: 1929-04-12
Abstract: 309,603. Bayer, J. April 14, 1928, [Convention date]. Bale ties.-In a method of securing the overlapping ends of metallic bale ties, the edges of the overlapping tie ends are depressed so as to form corrugations thereon, and the edges of two opposite corrugations are bent so as to double the metal upon itself. A tool for effecting the sealing is shown in Figs. 5 and 6, and comprises forked jaws 3, Fig. 5, adapted to receive jaws 3<a>, Fig. 6, between the members. The jaws 3 co-operate with lugs 2 on the head 1, and are slotted at 4 so that when rotated during operation, the overlapping ends 6 of the ties, which may be enveloped by a sleeve 7, are bent into the formation shown in Fig. 6. The jaws 3<a>, which are mounted eccentrically in relation to the jaws 3, are then closed upon the centre of the joint, end double the metal upon itself as shown at a, Fig. 2.
Patent GB-1365060-A (GB)
Title: Fluid circuit arrangement for filling a plurality of pressure accu mulators
IPC: B62D5/07
Filed: 1973-03-09
Abstract: 1365060 Hydraulic accumulator installations DAIMLER-BENZ AG 9 March 1973 [10 March 1972] 11444/73 Heading F1P In the circuit shown in Fig. 1 accumulators 3, 4, 5 are charged by a pump 1 through a line 2. If all the accumulators are fully charged, slide valves 13, 14, 15 are open as shown and the rear side of a change-over valve 9 is connected via a control pipe 23 to a reservoir 11. The valve 9 is thus not pressurized and opens so that fluid from the pump passes through a line 10 to the reservoir. If pressure falls in an accumulator, e.g. 3, slidevalve 13 closes the return pipe 23. Pressure builds up in pipe 23a and closes valve 9. The pump increases pressure in the line 2 so that the accumulator 3 is charged and when this charging is completed the valve 13 is opened by the pressure in the accumulator. Fig. 2 shows an embodiment in which a valve 18 divides the line 2 into a priority part 2a and a non-priority part 2b. When the pressure in accumulator 3 falls, slide valve 16 closes pipes 23 and 28. This causes pressure to build up on the rear side of both valves 9 and 18 so that they are closed. This disconnects the non-priority portion 2b of the pipe 2 from the pump so that the accumulator 3 is recharged. When recharging is complete the valve 16 opens again, If pressure falls in accumulator 5 slide-valve 15 closes pipe 23. Valve 9 now  closes whilst valve 18 remains open, thus allowing pressure to build up in pipe 2b to recharge accumulator 5. Fig. 3 (not shown) illustrates an embodiment in which accumulators 3, 4 are charged through a flow divider to ensure uniform filling.
Patent GB-145212-A (GB)
Title: Improvements in and relating to the pedals of pianofortes and like musical instruments
IPC: G10C3/26
Filed: 1919-05-07
Abstract: 145,212. Allen, F. B. May 7, 1919. Pedals for pianofortes and like stringed instruments are made of springy metal and may thus be screwed or riveted &c. to the instrument instead of being hinged. The pedal may be tempered in one or more portions only, and have a bent or arched portion near the support. A spring may be used to quicken the return of the pedal after depression.
Patent GB-114967-A (GB)
IPC: E04B2/30
Abstract: 114,967. Parker, J., and Swinton, W. W. Sept. 10, 1917. Double walls.-Hollow walls are formed of header and stretcher blocks, Fig. 1, dovetailed together, the headers being shaped concave on the top and bottom edges and with an aperture in the centre as shown in Fig. 3, to minimize the passage of damp.
Patent GB-244333-A (GB)
Title: An improved expansible boring tool
IPC: B23B51/00
Filed: 1925-05-04
Abstract: 244,333. Redfern, C. G., (Foster, G. H.). May 4, 1925. Drills and cutters. - A tool for drilling holes having a larger diameter at their inner ends comprises a stationary casing 2 having a number of projections 19 for engaging the work and knurled for holding by hand, in which are two ball-bearings 4, 5 for supporting a spindle 6 having a tapered end for insertion in a drilling- machine spindle. A slot 8 in the spindle 6 contains a lever 11 pivoted at 10 and provided with a projection 12 which coacts with the bearing 5 to oscillate the tool 14 attached to it and enlarge the inner end of the hole being drilled. The tool-holder 13 attached to the lever 11 has teeth 15 which act as a countersink. The spindle 6 is fed down. wards against the pressure of a spring 18 abutting on the bearing 5 and fibre washers 17 on a collar 16 attached to the spindle.
Patent GB-143206-A (GB)
Title: Improvements in or relating to siphons
IPC: E03D1/04
Filed: 1920-04-27
Abstract: 143,206. Martin, F. P. Mav 12, 1919, [Convention date]. Siphons.-The upper parts of the stand pipe and bell are made tapering, either curved as shown, or straight, with the part b<10> of the bell depending into the stand-pipe. The leg a and part b of the bell may be of decreasing diameter downwardly. The various tapers may be designed to give a constant cross-section of the water passage or one of given variability. Instead of being circular, the elements may be more or less flattened.
Patent GB-376844-A (GB)
Title: An improved preparation for sealing punctures in pneumatic tyres
IPC: C09K3/10
Filed: 1931-04-21
Abstract: A puncture-sealing composition comprises rubber solution, finely-ground rubber compound containing a large proportion of rubber (e.g. inner tube compound), finely-ground rubber compound containing a large amount of filling materials (e.g. tyre-tread compound), and water.
Patent GB-777122-A (GB)
Title: Improvements in or relating to tyres
Inventor: FLETCHER HENRY RAYMOND
IPC: B60C11/18
Filed: 1954-04-23
Abstract: 777,122. Reinforced rubber. DUNLOP RUBBER CO., Ltd. April 12, 1955 [April 23, 1954], No. 11747/54. Class 70. [Also in Group XXXIV] A tyre tread comprises a series of rows of parallel filaments extending inwardly from the tread surface, at least some of the rows comprising rigid skid-resisting mono-filaments of nylon or of polyethylene terephthalate, and the filaments 10a, 10b, in adjacent rows being disposed in crossing directions. All the rows may comprise skid-resisting, tubular or solid nylon or polyethylene terephthalate filaments. Alternatively the skid-resisting rows may be interspersed with closely adjacent reinforcing rows of non-rigid filaments of cotton or rayon. The filaments in all the rows may be inclined to the radial, or may be radial in some rows. The tread may be built up from edge-on, 45 degrees bias cut strips of weftless fabric formed from the filaments, arranged side by side in the desired order of rigid and non-rigid strips W and C respectively. Fig. 2 shows a packet of such strips comprising two nylon cord strips W in a channel formed from a rayon cord strip C which is flanked by rubber strips R. Fig. 4 shows an arrangement of nylon and rayon cord strips on a foundation of crossed rayon cord plies B<SP>1</SP>, B2. Other possible arrangements are described. Specification 764,832 is referred to.
Patent GB-459012-A (GB)
Title: Diaphragms for use with roentgen ray apparatus
IPC: G21K1/02
Filed: 1936-04-24
Abstract: 459,012. Bontgen - -ray diaphragms. SIEMENS & REINIGER - WERKE AKT.- GES., 31, Karlstrasse, Berlin. April 24, 1936, No. 11765. Convention date, June 8, 1935. [Class 98 (i)] A diaphragm for intercepting secondary radiation, of the kind comprising ray-absorbent bodies which may be of strip-form interspaced with ray-permeable bodies, is built up by coating the bodies, at least on one face, with an adhesive which softens on heating, holding them singly or a few at a time in the desired position, heating them, and allowing them to cool while still so held until the adhesive has set. The strips may be heated electrically, as by an elongated heater conforming in shape to the strips, or by passing current through the strips themselves; and they may be held in position as by suction against a straight edge. The heating should be regulatable, and regulatable cooling means may be employed to hasten the setting of the adhesive. If desired, the adhesive layers may constitute the ray-permeable parts of the screen. Reference is made to a diaphragm built up of spiral strips each of which is held in position by pins until cemented by shellac to its neighbour ; and to a diaphragm built up of strips which are coated with a varnish which becomes sticky when heated, and are then piled one upon another and compressed while heating the pile to soften the varnish.
Patent GB-1531002-A (GB)
Title: Implement
IPC: A01G1/12
Filed: 1976-06-04
Abstract: 1531002 Garden tools Q V SALES Ltd 4 June 1976 [21 March 1975] 11802/75 Headings A1B and A1E An implement for gathering leaves or other objects comprises a rake or brush member 2 secured by a socket 3 to the end of a handle 1, and a member 6 which is pivotable to the position shown in full lines in which it co-operates with the member 2 for picking up objects from the ground. As shown the member 6 is L-shaped, and is pivoted at 8 to a link 7 which is pivoted at 11 to the socket 3; movement of the member 6 being controlled by a sleeve (not shown) slidably mounted on the handle and connected to the member by a link 20. The sleeve may be displaced manually or by a motor.
Patent GB-610964-A (GB)
Title: Fluid medium storing and dispensing system
IPC: F17C7/02
Filed: 1946-04-17
Abstract: 610,964. Valves controlled by auxiliary valves. TRIGGS, W. W. (Specialities Development Corporation). April 17, 1946, No. 11813. [Class 135] [Also in Group XXI] A system for storing and dispensing carbon dioxide &c. under pressure comprises a container 10 closed by a spring-pressed valve 15 operable by an integral piston head 20 under the pressure of the fluid in the container 10 through the pipe 30 when a pilot valve 31 is opened. The valve 31 comprises a head 70 on a hollow stem 69 which when screwed down engages a member 65 to close the bore 71, then depresses the member 65 against a spring 59 to open the valve 50 by engagement therewith of the part 64. When the valve is closed, the chamber 21 is open to the air through ports 47, 57, 62 and bore 71. The container 11 is operated directly through the pipe 32 and the container 12 through the pipe 32 and a pilot valve 35 controlling a pipe 30 connecting the container to the piston head 20. As shown, the containers are provided with delivery means 18. In a modification, the containers 11, 12 are controlled by the delivery pipe of the container 10, the pipe 32 being omitted.
Patent GB-393062-A (GB)
Title: Improvements in and relating to liquid-break electric switches
IPC: H02K21/24
Filed: 1932-04-25
Abstract: 393,062. High-tension. switches. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. -(Assignees of Allgemeine Elektricitõts- Ges. ; 2, Friedrich Karl-Ufer, Berlin.) April 25, 1932, No. 11844. Convention date, April 25, 1931. [Class 38 (v).] In a liquid-break switch having a lower compartment 2 containing the fixed contact 5 and the conducting or semi-cond u c t i n g switching liquid and an upper compartment 3 serving as an expansion and condensing chamber joined by a neck portion through which the movable contact 6 is drawn, the walls of the lower compartment are of metal to withstand the pressure at break and the upper are of insulating material or are lined with insulating material. In the construction shown in Fig. 1, the two chambers constitute a single metal structure ; the upper chamber is lined with and covered by insulating material 7 and the neck portion is lined with insulating material. In a modification the upper chamber of insulating material is a separate structure with a neck fitting into the lower metal chamber. In the construction shown in Fig. 3, the upper chamber has an additional flange portion 11 to ensure a tight fit on the lower portion and the movable pin contact is guided by a structure, 15 mounted on the upper chamber. Reference has been directed by the Comptroller to Specifications 211,022, [Class 38 (v), Electric switches &c.], and 354,890.
Patent GB-1420777-A (GB)
Title: Coumarin and coumarinimide compounds
IPC: C09B57/02
Filed: 1973-03-13
Abstract: 1420777 3 - Ureido - 7 - N - diethylamino coumarin SANDOZ Ltd 13 March 1973 [15 March 1972] 11957/73 Heading C2C [Also in Division C4] 3 - Ureido - 7 - N - diethylamino coumarin is formed by the reaction of and 2 - hydroxy - 4 - N - diethylaminobenzaldehyde, via the coumarinimide which is hydrolysed with alcoholic HCl (Example 1).
Patent GB-876165-A (GB)
Title: Improvements in or relating to a load control valve for pneumatic suspension systems
IPC: H01Q1/02
Filed: 1959-04-09
Abstract: 876,165. Pneumatic road-vehicle suspension level-control valves. FABRICA ITALIANA MAGNETI MARELLI. April 9, 1959 [April 12, 1958], No. 11990/59. Class 108(2). In a pneumatic road-vehicle suspension level-control valve 9 cam 4 rotatable by a lever 14 connected to the axle is axially movable against a spring 15 under the action of air pressure from the reservoir (not shown) of the suspension system. Air from the reservoir passes via a connection 6 to a conduit 18 leading to a seal 20 which acts on a ring 17 to displace the cam 4. The connection 6 also leads to an inlet valve Vi which is adapted to be lifted by the cam 4 when it bears on a roller 12 carried by a push rod 5. A similar push rod 5a operates between the cam 4 and an exhaust valve V s . Italian Specification 584,401 is referred to.
Patent GB-828365-A (GB)
Title: Improvements in and relating to capacitive voltage transformers
IPC: G01R15/06
Filed: 1957-04-12
Abstract: 828,365. Capacitive voltage transformers; protective arrangements. MICAFIL AKTIENGESELLSCHAFT WERKE FUR ELECTROISOLATION & WICKLEREI - EINRICHTUNGEN. April 12, 1957 [April 12, 1956], No. 11999/57. Class 38 (4). In a capacitive voltage transformer of the type whereby capacitors C1, C2 form a potential divider with an electromagnetic transformer T connected across the earthed capacitor C2, a protective device Z2, comprising at least an impedance, is connected across capacitor C2 to damp oscillations lower than the supply frequency. Z2 comprises a parallel L.C. circuit, resonant of the supply frequency, which acts as an inductive load at lower frequencies thus attenuating them. Z2 may be connected across the secondary winding, or the whole or part of the primary winding of transformer T. Oscillations of the supply frequency are quenched by a spark gap F arranged to be self-extinguishing by a series impedance Z1, which may consist of a capacitor, preferably with a series resistor, and preferably associated with a discharge resistor. The spark gap may be connected before, or after, inductor L1, which suppresses oscillations in the transformer primary circuit and compensates for the volt drop of the capacitive divider. Resistors R1, R2 represent the internal resistance of inductor L1 and transformer T.
Patent GB-569627-A (GB)
Title: Improvements in or relating to fastening devices for securing slates or tiles on roofs
IPC: E04D1/34
Filed: 1943-07-23
Abstract: 569,627. Roofs. UNIVERSAL ASBESTOS MANUFACTURING CO., Ltd., and BEESON, S. G. July 23, 1943, No. 12039. [Class 20 (iv)] [Also in Group XXV] Slates and tiles C, D, E are secured in position on a roof by fastening devices made of flexible metal wire, each device consisting of a volute coil forming a disc A of which the centre is continued upwardly to form a prong B. The disc is slipped under the adjacent edges of two slates C, D and the prong passes through a hole F in the overlapping slate E and is then turned down to clinch the fastening device in position. The device may be galvanized, lacquered or otherwise coated either before or after shaping.