baber/WOPTO huggingface dataset:
Patent GB-893558-A (GB)
Title: Improvements in video recording systems and methods
IPC: H04N9/82
Filed: 1959-05-22
Abstract: 893,558. Television. AMPEX CORPORATION. May 22, 1959 [June 2, 1958], No. 17572/59. Drawings to Specification. Class 40(3). In an arrangement for recording colour television signals of N.T.S.C. type on a magnetic tape a reference signal derived from the "colour-bursts" in the signals to be recorded is combined with the composite colour video signals and recorded concomitantly therewith. Any phase and frequency errors caused by the recording and reproducing process therefore affect the reference signal and the chrominance signal equally so that distortions due to such errors are removed by deriving the chrominance frequency sub-carrier for demodulating the chrominance signal from the recorded reference signal when colour signals are reproduced from such a recording. The reference signal is produced by multiplication or division of a signal of the chrominance subcarrier frequency which is derived under the control of the "colour-bursts" in the signals to be recorded the multiplying or dividing factor being such as to produce a reference signal of such frequency that it or its sidebands do not interfere appreciably with the video signal frequencies. This signal is then combined with the composite video signals and the combined signals employed to modulate a carrier wave which is then recorded on the magnetic tape. Alternatively, the composite video signals are, first modulated on to the carrier wave and then combined with the reference frequency prior to recording. The carrier wave is preferably frequency modulated by the composite video or by the combined signals but amplitude modulation may be employed. When reproducing colour signals from a recording made in this manner the reference frequency is separated out and either multiplied or divided by the appropriate factor to produce a reference signal of chrominance sub-carrier frequency which is then employed to effect the recovery of the "I" and "Q" colour signals. The invention is described in connection with a recording/reproducing system of the kind described in Specification 798,927, in which a plurality of magnetic transducers carried by a rotating head sweep successively across a magnetic tape which moves at right angles to the direction of sweep. Specifications 798,928 and 798,930 also are referred to.
Patent GB-1090315-A (GB)
Title: Improvements in or relating to vehicles having hydraulic transmissions
IPC: B60K17/10
Filed: 1965-04-26
Abstract: 1,090,315. Variable speed control. C. VAN DER LELY N.V. April 26, 1965 [April 29, 1964], No. 17575/65. Heading F2D. A motor vehicle hydrostatic gear control linkage comprises a ratio shift lever 14 connected to a ratio adjusting mechanism 65 through a spring means 48 which, on rapid movement of the lever 14 to a selected position, is compressed and thereafter moves the ratio adjusting mechanism 65 slowly to a position corresponding to that of the lever 14. The spring means acts between a rod 46 and sleeve 47 and comprises sleeves 51, 52 urged by a spring 48 into engagement with stops 53 on the rod 46 and stops 54, 55 on the sleeve 47 to normally maintain the rod 46 and sleeve 47 in corresponding positions. Rotation of the lever 14 about an axis 22 acts through a lever 44 and the rod 46 to compress the spring 48 which thereafter urges the sleeve 47 connected by links 56. . . 64 to the adjusting mechanism 65 to a position corresponding to that of the rod 46. The lever 14 has a forked end pivotally connetted at 26 to a block 24 fast with the lever 44 which pivotal connection permits angular movement of the lever 14 at right-angles to the ratio shift movement. In the neutral position, shown, a spring (29) (Fig. 4, not shown) rotates the lever (14) about the pivot (26) to engage the lower ends of the forks in a recess (37) between guides (36) and an abutment (38) rotates clockwise a lever (40) which acts through a rod (42) to open a by-pass valve between the high and low pressure lines of the hydrostatic gear. The hydrostatic gear may comprise a variable displacement swash-plate pump in closed circuit with a swash-plate motor.
Patent GB-1260085-A (GB)
Title: Polymerization process and catalyst therefor
IPC: C08G65/12
Filed: 1970-04-14
Abstract: 1,260,085. Polymerisation catalysts. B. F. GOODRICH CO. 14 April, 1970 [14 April, 1969], No. 17606/70. Heading B1E, [Also in Division C3] A polymerisation catalyst comprises a reaction product of a polymeric hydrocarbylaluminium alkoxide with 0.15-0.50 mole H 2 O and 0.1-0.50 mole of a chelating agent for organoaluminium compounds per mole of aluminium and optionally an ether. The polymeric hydrocarbylaluminium alkoxides contain aluminoxide linkages and are formed by reacting a hydrocarbylaluminium compound with CO 2  until no more heat of reaction is released. The hydrocarbylaluminium compounds can be trialkylaluminiums or dialkylaluminium hydrides. The chelators specified are diketones, acetoacetic acid, ethyl acetoacetate, formylacetone, hydroxyethyl methyl ketone, hydroxyacetone, salicaldehyde, ethyl glycollate, 2-hydroxyethyl acetate, oxalic and malonic acids, malonaldehyde and glyoxal mono-oxime, and the ethers are diethyl, dipropyl diphenyl and ethyl phenyl ethers and tetrahydrofuran. In an example a liquid polymeric ethylaluminium alkoxide prepared from Et 3 Al is reacted with H 2 O and acetylacetone or THF and Et 2 O. The catalysts are useful in the polymerisation of epoxides (Division C3).
Patent GB-872443-A (GB)
Title: Improvements in and relating to machines for moulding plastic material
Inventor: THIRKELL VICTOR WILLIAM
IPC: B29C51/10
Filed: 1957-06-04
Abstract: 872,443. Vacuum-moulding thermoplastic sheet material. SHELLEY & PARTNERS Ltd., M. L. June 3, 1958 [June 4, 1957], No. 17668/57. Class 87(2). A machine for vacuum forming a sheet of thermoplastic material comprising a plate 3 carrying a mould box 3a connected through a pipe 9 to a suction chamber 2 which is itself connected to a suction pump 4 has columns 10, 11 pivotally mounted on the plate 3 which carry a radiant heater assembly 13, and a clamping frame 12, and a plug 14 respectively. The top of the mould box has a rubber seal and the clamping frame is held downwardly by a toggle 15. The plug 14 is used to form a concavity in the sheet before the suction is applied. Where a female mould is used, the mould is brought up into contact with the sheet by a foot operated platen 25. Where a male mould is used the mould may be raised further to obtain an initial drape. The plug 14 may be electrically heated. The moulded article may be blown from the mould. More than one mould maybe mounted on the machine. Specification 872,442 is referred to.
Patent GB-1425833-A (GB)
Title: Display for electrical signals
IPC: G09F13/00
Filed: 1973-04-12
Abstract: 1425833 Apparatus for displaying variable signals BENDIX CORP 12 April 1973 [13 April 1972] 17723/73 Heading G4H Apparatus for displaying the amplitude of a variable electrical analogue signal comprises an analogue-to-digital converter 36 for generating digital signals representing the amplitude of the analogue signals, indicator elements 18 which provide a visual display corresponding to the digital signals and a limit indicator 22 which is activated when a preset digital signal is generated. The variable analogue signal is provided by a displacement transducer 32 such as a differential transformer, the A.C. output of which is fed via a circuit 34 to the converter 36 of the type which includes a comparator and a clock pulse counter. The sixbit digital output of the converter 36 is supplied in the form of two groups of three bits of a decoder 38 which energizes a single element 18. The elements 18 are light emitting diodes and if the diode corresponding to the position of maximum or minimum signal level indicators 26, 24 is illuminated, the reject indicator 22 is also illuminated. In the event of the signal level exceeding the range of the display a light emitting diode 28 is illuminated.
Patent GB-546714-A (GB)
Title: Improvements in or relating to chimney pots and ventilator terminals
IPC: F23L17/02
Filed: 1940-12-16
Abstract: 546,714. Chimney &c. tops. HURDEN, E., and SNELLING, J. C. Dec. 16, 1940, No. 17736. [Class 25] A chimney pot or ventilator terminal of the kind comprising curved louvres of upwardly increasing pitch is provided with helical louvre blades J the external edges or flanges M of which form parts of a cylindrical surface while the inner edges N lie upon the boundary of an open truncated cone having its. larger diameter uppermost. The louvre blades are spaced apart to provide openings extending from the inside to the outside of the pot or terminal throughout their length. The blades are moulded in one piece with a base A and upper part D which may be provided with a cap of the kind described in Specification 546,742. Specifications 9686/98, [Class 25], and 485,836 also are referred to.
Patent GB-561634-A (GB)
Title: An improved method of and device for securing splints on a broken or damaged limb
IPC: A61F5/058
Filed: 1942-12-15
Abstract: 561,634. Band clips. PALEY, R. H. A., and HARDY, D. W. H. Dec. 15, 1942, No. 17805. Convention date, Feb. 12, 1942. [Class 44] [Also in Group VI] Splints C, L are secured on a broken &c. limb H by means of flexible elements K drawn taut by winding devices A each adapted to receive the two ends of the elements K. The winding devices A are attached to base pieces B slidable along the length of the splint and the flexible elements K are maintained at the required tension by a detent on a spring-urged pivoted lever E which engages a ratchet wheel D fixed to the winder A. A finger-piece on the lever E enables the ratchet to be disconnected for removal of the elements K.
Patent GB-429859-A (GB)
Title: Improvements in covers made of indiarubber or a compound of indiarubber for books, registers and the like
IPC: B42D1/06
Filed: 1934-06-15
Abstract: 429,859. Bookbinding. FORTIER, A. A., 9, Rue Edouard Jacques, Paris. June 15, 1934, No. 17807. Convention date, May 25. Addition to 424,774. [Class 16] The book covers described in the parent Specification are modified in that the backs or spines are always considerably thinner than the sides and are initially curved. The modified covers enable the books to be opened out into a flattened condition. In the form shown, the back 2 is provided with outwardly projecting bulges 5, 5<1> at or near the hinge lines, and the sides 1, 11 are provided with flaps 4, 41 under which the flaps of the cloth lining strip of the filler are glued or otherwise secured. In a modification, the sides of the flaps 4, 4<1> are glued or secured by vulcanization to the side covers to provide pockets for the reception of the cloth flaps of the filler lining strip. In other forms, the sides of the cover are not provided with flaps, and the filler lining strip is simply secured by adhesive or otherwise to the sides of the cover; end papers may be glued to the insides of the cover to ludo the edges of the filler lining strip.
Patent GB-708745-A (GB)
Title: Inflatable fabric member
IPC: E04H15/20
Filed: 1951-07-27
Abstract: 708,745. Collapsible boats. WINGFOOT CORPORATION. July 27, 1951 [Feb. 27, 1951], No. 17833/51. Class 113(2) [Also in Group VIII] An inflatable fabric member which may be utilized in the construction of temporary buildings, shelters, boats, pontoons and similar products, and which has substantially planar surfaces when inflated, comprises a plurality of segments arranged to form a single pneumatic chamber, each of the segments embodying two plies of substantially fluid-impervious fabric disposed in parallel relation to each other in the inflated condition and joined together by a plurality of substantially inextensible tie threads which are woven at least partially into each of the plies; a fabric element for joining together the margins of adjacent segments and maintaining the margins of the segments in the spaced relation when inflated, and having spaced apertures therein; and a fluid inlet in one of the segments. As shown, two adjacent segments composed of layers 5 and 6, 8 and 9, connected by a multiplicity of threads 7 and 10, and rendered fluid-impervious by a thin layer of rubber or the like, are joined by elements 12 comprisjng two layers of fabric 13, 14 joined together by stitching 15 and provided with a row of spaced apertures 16. The end portions 17, 18, 19 and 20 of the elements 12 are folded over and secured to the layers 5, 6, 8 and 9 by adhesive. Cover tapes or strips 22, 23 are adhesively bonded over the portions 17, 19 and 18, 20 and the adjacent portions of the segments. A valve for inflation is mounted on one of the segments.
Patent GB-959516-A (GB)
Title: Improvements in or relating to a sealing gasket
IPC: F16J15/12
Filed: 1962-05-09
Abstract: 959,516. Gaskets. H. L. BROWNBACK. May 9, 1962 [May 15, 1961], No. 17841/62. Heading F2B. A gasket, Fig. 1, is made of a distortable but relatively rigid frame 1 confining one or more cavities 3 at least partially filled with flexible, non-porous material and opening into at least one of the faces of the frame where they are closed by a thin coating 4, 4a of a friable protective material. The frame 1 may be corrugated, as shown, and may be of copper, brass, paper, cardboard, cork, plastic material or an asbestosbase composition. The material filling the cavities 3 is of a flowable nature and may consist of a partially polymerized oil, a natural or synthetic rubber-base composition, a synthetic resin, pitch or bitumen, these substances being reinforced, e.g. by asbestos fibres. The friable protective material may be constituted by varnishes, lacquers, plastics, paper or metal foil. When the gasket is tightened between two surfaces to form a seal the frame is progressively distorted and the films 4, 4a are destroyed, permitting the filling material to flow and come into intimate contact with the surfaces. In Fig. 3, which shows a cross-section of a cylinder gasket, the faces of the frame 1a may be completely covered with a protective film 4 or only the cavities 3 are closed by films 4 1 . In Fig. 4, the frame may consist of two half-shells 1 1 , 1 2  with gaps 5 therebetween, by a split tube or with gaps between the parts, or by a tube having slots made along certain of its generatrices. The gaps or slots 5 are closed by the protective film.
Patent GB-923731-A (GB)
Title: Improvements in and relating to variable pitch marine propeller
Inventor: O'CONNER CHARLES AUGUSTUS
IPC: B63H3/12
Filed: 1960-05-20
Abstract: 923,731. Marine variable pitch propellers. LESNOR MAEHR MARINE CO. May 20, 1960, No. 17855/60. Class 114. A marine propeller comprises a hub 10 on which a number of blades 13 are pivotally mounted, each by a shaft 14. A control ring 12 is rotatable relative to the hub 10 and is formed with helical grooves 16 each of which receives a detent 15 depending from the trailing edge of a blade 13. The ring 12 is also formed with finger gripping portions 32, by which it may be rotated to alter the pitch of the blades, and tapered slots 25 which receive brake blocks 34, e.g. cork supported by aluminium and acted upon by a rubber pressure block, which, aided by the gradual pitch of the grooves 16, retain the blades in their selected pitch. A pressure pad 19 of, e.g. rubber serves to absorb vibration of the blade 13. A reference line 33 is scribed on the hub 10 and ring 12.
Patent GB-496071-A (GB)
Title: Improvements in and relating to magnetic separators
IPC: B03C1/035
Filed: 1937-06-26
Abstract: 496,071. Magnetic separators. HUGHES, P. A., and TRAVANCORE MINERALS CO., Ltd. June 26, 1937, No. 17878. [Class 72] A casing for a magnetic separator comprises two substantially rectangular frame members each provided at its four corners with a polepiece and assembled together with a core disposed between them, so that the separator may be of the inductive or deflector type in which the longitudinal axis of the core is horizontal and the material to be treated fed by gravity on to rollers placed between pairs of polepieces or alternatively the separator may be of the lifter type in which the casing is placed in a position in which the longitudinal axis of the core is in the vertical position, the feed rollers being replaced by a conveyer. In the first type of separator, the material to be treated is fed from shoots 11 by plates 12 on to rollers 14 arranged between the detachable pole 5 on the frame 2 and the pole 5 integral with the frame 1 carrying the core 3 surrounded by a winding 4. The magnetic material passes away on a plate 15 and the other material is led by plates 16 on to further rollers 14 the magnetic material being led away on a plate 15 and the non- magnetic on a plate 16. The core 3 may be integral with, or detachably connected to the frame 1, and the poles 5 detachably secured to flat surfaces at each end of the frame 1. In the second type, Fig. 3, the polepieces 5 on the frame 2 are provided with sharpened points 19, the material is fed on to the conveyer 18 by a shoot 20 and conveyers 21 pass round the upper polepieces 5 to remove the magnetic material.
Patent GB-982313-A (GB)
Title: Device for reagent dosing in automatic analyzers or other chemical apparatus
IPC: B01L99/00
Filed: 1961-05-17
Abstract: 982,313. Supplying analysis reagents in measured doses. A. ANSCHERLIK. May 17, 1961 [June 24, 1960], No. 17911/61. Heading B1X. [Also in Division B8] A device for dosing liquid reagents in automatic analysers or other intermittently operating chemical apparatus, the dosing of the reagent being controlled by the through-flow of the liquid to be tested, comprises in combination a substantially vertical sample supply tube 4 having a constriction 41 and a generally U-shaped dosing vessel 1 to one arm of which a siphon tube 11 is attached and the upper part of the other arm of said dosing vessel is connected by a substantially U-shaped inlet tube 2 to a constant level reagent supply vessel 3 and the top of this same arm of the dosing vessel is connected to an inverted-U tube 6, the bend 63 of said tube being above the liquid level in vessel 3 and above the inlet 42 of tube 4. Terminal portion 61 of inverted-U tube 6 is connected: to the sample supply tube 4 above, the constriction therein. The sample supply tube and the siphon tube discharge into a common mixing vessel 5. In operation liquid from 3 fills inlet tube 2 and dosing vessel 1, rising in the ascending portion of 1. The reagent in 3 is kept at a constant level lying below that of bend 12 so that no reagent can overflow when the apparatus is at rest. When a liquid sample is added at 42 to tube 4 the liquid rises in portion 61 of inverted-U tube 6, due to constriction 41. The rising liquid displaces air which depresses the liquid level in the right hand side of the dosing vessel 1 and in the inlet portion 22 until the liquid in vessel 1 and tube 2 no longer communicate. As a result the liquid rises in the left arm of 1 and passes the bend 12, the siphon is primed and the contents of dosing vessel 1 are discharged through orifice 13. Meanwhile the liquid sample passes the constriction 1 and flows into vessel 5.
Patent GB-497764-A (GB)
Title: Device for the electric welding of pipes
IPC: B23K11/30
Filed: 1937-06-28
Abstract: 497,764. Electric welding. CLEVER, O. June 28, 1937, No. 17914. [Class 83 (iv)] In electric resistance pipe welding by rollers formed in halves with an interposed insulating disc, the disc is of increased thickness or replaced by two discs with or without a spacing disc and arranged so that the upper edges of the bearing surfaces of one or both roller halves is located at the same height as, or lower than the inner edges of the abutting faces at the joint so that the current passes through the middle or lower portion of the abutting faces and thus heats them over their whole area. The roller electrodes a may be provided with insulating discs b and a removable spacing disc c of thickness depending on the diameter and thickness of the pipe, so that the upper edges of the electrodes touch the pipe at the same height as the lower edge of the abutting edges of the pipe. In Fig. 2 roller electrodes f, g of different diameter are separated by a thick insulating disc so that the current has an oblique path. In a modification of this form, Fig. 3, insulating discs h, i of different thicknesses are provided, one or both of which may have lateral extensions to prevent the formation of a bead by the pressing rollers. The electrodes in this form are mounted on telescoped axles. In a further form, Fig. 4, the electrodes a have insulating discs b with lateral extensions the direction of flow of the current being oblique or straight according to the distance between the electrodes. In a modification of this form one or both of the electrodes may be inclined outwardly with respect to each other. In another form, Fig. 6, one electrode m may be on a horizontal axis and the other n on a vertical axes.
Patent GB-1058278-A (GB)
Title: Electrical connector member fitted with a contact member or members
IPC: H01R13/42
Filed: 1964-04-30
Abstract: 1,058,278. Two-part couplings. FABBRICA ITALIANA MAGNETI MARELLI S.p.A. April 30, 1964 [April 30, 1963; Feb. 26, 1964], No. 18078/64. Heading H2E. In a plug or socket connector, each contact member B is clamped at one end B2 to a conductor and is held in a slot A2 in a resilient support A1 by a boss A4 which extends into the slot from the support and engages in a corresponding aperture B4 in the contact member, the gap between the end of the boss and the opposite wall of the slot being smaller than the thickness of the contact member. The body of the connector, including the support A1, is moulded, and as described, the contact members B are blades with tapered ends B1. Entry of the latter may be facilitated by forming the slot with a sloping wall A6 or by providing a further slot A8, Fig. 6 (not shown), to weaken the support. The slot A8 can be blocked after assembly to lock the member B.