baber/WOPTO huggingface dataset:
Patent GB-1339416-A (GB)
Title: Magnetic head and method of manufacture thereof
IPC: G11B5/29
Filed: 1972-06-19
Abstract: 1339416 Magnetic heads AMPEX CORP 19 June 1972 [25 June 1971] 28666/72 Heading G5R A housing 16 containing a plurality of magnetic core members with windings is secured, e.g. as described in Specification 1,339,415, to a head face part 11a, 11b of ceramic material having a plurality of ferrite polepieces 12, 13 glassbonded therein, to form a plurality of magnetic transducers. As shown, the face part is made by glass-bonding ferrite pieces 44 in slots in a ceramic block 41, Fig. 5C, cutting the resulting block into two portions 41a, 41b, Fig. 5D, bevelling their edges at 47a, 47b and joining them at faces 42a, 42b separated by a layer 49 of non-magnetic gap-forming material, Figs. 5E and 5F, bonding the two portions together with the aid of tie-bars 25 and a reinforcing wedge 53, Figs. 5G and 5H, and shaping the tape-contacting face, Fig. 5I. Inter-transducer screening plates are contained in the core housing 16, and possibly also in the face part, Figs. 6A to 6J (not shown).
Patent GB-257782-A (GB)
Title: Improvements in or relating to colour photography
IPC: G03C7/20
Filed: 1925-11-13
Abstract: 257,782. Diernhofer, H. Nov. 13, 1925. Printing in several colours. - In producing colour prints by superposed impressions from printing-plates made from colour component negatives on to a gelatinized paper base, for the second and subsequent impressions the printing- plate is visually registered with the previous impressions before it is dyed or coloured for printing. Before the impressions the gelatine paper is dipped into water, withdrawn quickly, and excess water removed from the gelatine surface, the base being left to float so that it may stretch according to requirements. The dry uncoloured printing-plate for the next impression is then visually registered and secured, as by means of marginal clips, the paper and printing-plate being larger than the picture area. The paper is then raised without disturbing the registration means and the plate coloured or dyed for printing. Accurate registration is ensured by controlling the expansion of the paper base. When after successive printings a gelatine coating is applied preliminary to the next printing, the already printed paper is first floated wet on a ground plate and excess water squeezed out by a celluloid foil and a large sheet of blotting-paper. If the gelatine of the printing-plate before dyeing or colouring becomes too soft, the combined paper and plate may be separated by blotting-paper and placed for a few minutes in a cooler temperature.
Patent GB-693987-A (GB)
Title: Improvements relating to spirit duplicating and like machines
IPC: B41L39/14
Filed: 1950-11-23
Abstract: 693,987. Rotary duplicators; stopping-arrangements. GœNTHER WAGNER VERWALTUNGSGES. Nov. 23, 1950 [Dec. 27, 1949], No. 28695/50. Class 100(ii) In a spirit duplicating-machine, means for locking the printing-cylinder h in the absence of a sheet of paper comprises a bell-crank lever a, d, the arm d having a pin e thereon which co-operates with a locking lever n provided with a sheet-feeler l, and the arm a having a lug b and a roller c thereon. The front face of the cylinder h is provided with a cam i and a stop k which co-operate, respectively, with the roller c and lug b. The feeler l and lever n form a bell-crank lever pivoted at m, and is urged by a spring o into engagement with the sheet of paper p on the table r. At each rotation of the cylinder h, the cam i oscillates the lever a, d, against the action of a spring f, and, normally, the stop k meets no opposition. If, however, in the absence of a sheet on the table r, the feeler l passes through a slot s in the table, the pin e; when the lever a, d is swung back by the cam i, engages the arm n and snaps into a recess z therein: in this position, the lug b is struck by the stop k, and the cylinder h is stopped. The lever n can be tripped by a hand-lever w to release the lever a, d: a sheet fed over the table r would likewise trip the lever n. As shown, the lever a, d is pivoted on the axis of the moistening-roller t which co-operates with the feed roller u, and the arrangement is such that the feeler I operates as close as possible to the line of contact between the cylinder h and pressure roller v.
Patent GB-1501566-A (GB)
Title: Vibration transmission mechanisms in phonographs
IPC: G11B3/00
Filed: 1976-09-09
Abstract: 1501566 Gramophone YUGEN KAISHA WATANABE KENKYUSHO 9 July 1976 [11 March 1976] 28721/76 Heading G5R Sound vibrations produced as stylus 11 moves over record 12 are transmitted via dome 28 on stylus arm 10 to an intermediate vibrator 13 which is Y-shaped in plan and carries pivotally mounted thereon a two armed member 15 having the end of one arm urged into engagement with the apex 29 of sound producing diaphragm 16 by a blade spring 33 acting on the end of the outer arm. The arrangement is said to improve the quality of the reproduced sound by reducing the transmission at the high frequency end of the sound spectrum.
Patent GB-634895-A (GB)
Title: Improvements in the propulsion of gliders and like aircraft
IPC: B64C31/024
Filed: 1947-10-29
Abstract: 634,895. Glider propulsion DENGHY, J. A. L. Oct. 29, 1947, No. 28870. [Class 4] [Also in Group XXVI] A glider 10 is propelled intermittently by means of a jet tube 14 supplied by a compressed air or gas reservoir 13 which may be manually replenished during flight by means of a pump 29 operated by levers 31. The orifice 15, Fig. 4 of the jet tube 14 is controlled by a plate 17, apertured at 19 and pivoted at 18 for movement by the pilot operated, spring-loaded cable 23 attached to the arm 171 and passing over a pulley 24. In a modification, Fig. 5, the reservoir 13 is replenished by a wind driven compressor 32 whilst in a further modification (Fig. 6, not shown), an auxiliary motorinstallation is used for this purpose. Specifications 196,043, [Class 4], and 559,448 are referred to.
Patent GB-243025-A (GB)
Title: A method of reducing inductive disturbances in submarine cables
IPC: H04B3/30
Filed: 1925-11-16
Abstract: 243,025. Meyer, U. Nov. 15, 1924, [Convention date]. Eliminating effects of disturbing currents; systems employing non-contact-making relays; repeating systems using contact-making, relays.- In a submarine cable provided with a two-core portion extending some distance from each end in order to reduce inductive disturbances, such disturbances are further reduced by providing a repeating relay of any desired type between each two-core portion b and the single-core portion d of the cable. The relay is preferably so dimensioned that the impedances of the double core and single core portions are in the ratio 2 to 1. In the arrangement shown in Fig. 1, the relay comprises a transformer coupling c, of which the ends of the primary winding are connected to the two cores of the portion b, the middle point being earthed, and the secondary winding connects the core of the portion d to earth. Fig. 2 shows a modification employing an auto-transformer connection g between the portions b and d. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of a " voltage-transforming filter circuit " connection. This subject-matter does not appear in the Specification as accepted.
Patent GB-519940-A (GB)
Title: Improvements in or relating to optical instruments
IPC: G02B23/00
Filed: 1938-10-05
Abstract: 519,940. Monocular sighting instruments. BOCK, R. Oct. 5, 1938, No. 28924. [Class 97 (i)] A. prismatic monocular sighting instrument in which the line of sight may be diverted at an angle to its normal position without changing the position of the body of the instrument comprises a casing capable of insertion in a vest pocket &c. an eyepiece at one end of the casing, apertures or objectives respectively at the other end and at one side of the casing, a pair of doubly - reflecting prisms, and a movable reflecting element determining from which objective &c. light passes to the prisms ; a single objective between the reflecting element and the prisms may replace objectives at the apertures. As shown, objectives 3, 6, having axes at right angles, are mounted in a casing 1 having a framework 12 supporting doubly-reflecting prisms 4, 5, an eyepiece 2, and a pentagonal prism 7 movable along a slide 19 by an external finger-piece ; the position of the prism 7 determines which of the objectives is operative. The prism 4 is carried by a plate 10 movable, by a threaded rod 16 having a knurled head 15, for focussing. In a modification the objective 6 may be omitted and the prism 7 may be arranged in front of the objective 3.
Patent GB-692111-A (GB)
Title: Improvements connected with tractor drawn lawn mowers
IPC: A01D75/30
Filed: 1950-11-27
Abstract: 692,111. Lawn-mowers. RANSOMES, SIMS & JEFFERIES, Ltd., and PLUMB, A. B. Nov. 22, 1951 [Nov. 27, 1950], No. 28985/50. Class 6(ii) A gang lawn-mower for use with a tractor provided with lifting linkage comprises a rigid frame 1 connected by a swivel joint to a cross-bar 21 connecting the lower links 19 of the tractor, the linkage being provided with two abutments 32 so that, when the linkage lowers the mower to the ground, the abutments are clear of the frame 1 which is free to oscillate about the swivel joint and, when the mower is lifted, the front of the mower frame engages with the abutments so that the frame cannot swing sideways. As shown, the frame 1 is connected by swivel connections 2 with the centres of mower units 10. The cross-bar is provided with a structure 20 for pivotal attachment to the tractor links, the structure also supporting flexible cables which are slackened when the machine is working but are tightened when the linkage is operated to raise the mower. The swivel joint comprises a lug 24<SP>1</SP> attached to a sleeve 24 freely rotatable on the cross-bar 21 which is engaged by a forked end 26 of a rod 27 freely slidable and rotatable in a bar 29 rotatably carried by brackets 30. The invention may be applied to a mower as described in Specification 616,255. Specification 163,300, [Class 6(ii)], also is referred to.
Patent GB-383383-A (GB)
Title: Wrist watch
IPC: G04B3/04
Filed: 1931-10-19
Abstract: 383,383. Watches. BOSCH, F., 27, Hohenzollernstrasse, Pforzheim, Germany. Oct. 19, 1931, No. 29008. Convention date, Jan. 12. [Class 139.] Cases.-A wrist watch in which one of the strap fastening means surrounds the winding knob is distinguished by a rigid lateral extension d, e, f which has an aperture h for accommodating the knob i and a second aperture h<1> for attaching the loop of the strap g. The Specification as open to inspection under Sect. 91 states also that instead of the bow f any other suspension or fixing means may be provided for the wrist strap end g, which may be made as a cord, chain or any other similar body. This subject-matter does not appear in the Specification as accepted.
Patent GB-738074-A (GB)
Title: Improvements in and relating to conveyors
Inventor: KEEN WILLIAM CHARLES PEARSON
IPC: B65G47/48
Filed: 1951-12-11
Abstract: 738,074. Endless conveyers. TELEFLEX PRODUCTS, Ltd. Nov. 26, 1952 [Dec. 11, 1951], No. 29009/51. Class 78 (1). An endless conveyer of the kind having spaced carriers with platforms upon which the goods to be conveyed are loaded, the platform being automatically tiltable for the delivery of the goods is provided with preselection means comprising a selector in each carrier having settable cams to co-operate with followers and parts controlled thereby at the delivery stations to effect tilting of the platform at any pre-selected delivery station. As shown, each selector comprises a pair of rectilinear rods 14, 15, each having a square shaped sleeve 44 bearing an integral flat plate cam 47 and engageable in a series of V-shaped notches to hold it in the various numbered portions in which it can be set. The station followers 61 are lugs formed integrally on similarly notched and figured square section bars 56, 57 which are mounted for rotation in upper and lower brackets 54, 55 and bear at their lower ends, which project below the brackets 55, station bar cams 58 to which are connected tension-springs 59 to keep the cams 58 normally in an inoperative position. As a carrier passes the station, for delivery at which its cams 47 are set, these cams contact the appropriately-placed follower lugs 61 and thereby turn the bars 56, 57 through approximately 90 degrees, thus setting the station bar delivery cams 58 into position where they contact two cable levers 35, 36 on the carrier. The cable levers 35, 36 are connected to cables running through the platform suspension members 18, 20. The cables are secured at their lower ends to spring-urged detent means 33 which normally prevent the platform 25 from rotating about its horizontal axis 24. On operation of both cable levers 35, 36 at the appropriate delivery station the detent means 33 are released and the platform 25 tilts to discharge its load. After discharge a counterweight restores the platform to the horizontal and it is locked into position by the spring action of the detent means. Specification 592,546 is referred to.
Patent GB-285952-A (GB)
Title: Improvements relating to toilet mirrors
IPC: A45D42/10
Filed: 1927-05-04
Abstract: 285,952. Finer, A. C. May 4, 1927. Mirrors. - In a mirror of the kind having a light hidden behind it which illuminates the user by reflection, a shield 15, which may act as an auxiliary reflector, is interposed between the lamp and the mirror backing. A clear space 14 surrounds the silvering 13 to permit passage of the light from the main reflector 2.
Patent GB-457949-A (GB)
Title: Improvements in and relating to fiddle rails for tables and like articles of furniture
IPC: A47B13/08
Filed: 1935-10-22
Abstract: 457,949. Fiddle racks for tables &c. WARING & GILLOW (1932), Ltd., and HUGHES, C. E., 164, Oxford Street, London. Oct. 22, 1935, No. 29086. [Class 52 (iii)] A fiddle rail for tables, sideboards, &c. is provided at its ends with small metal strips in which are slots 5, engaging with pivot pins 4 on brackets at the ends of the edge of the table. Between these strips is fitted the fiddle rail, which normally hangs as shown beneath the edge of the table 2. To put the rail into place, it is turned through 180 degrees on its pivots 4, the groove 1 permitting this movement. When the rail has been so turned, it falls, the slotted parts 5 moving down upon the pivots 4, and remains projecting slightly above the top of the table edge. An abutment 12 prevents the rail from lifting when it is not in use. A ball catch may be fitted to keep the rail either raised or lowered.
Patent GB-603869-A (GB)
Title: Improvements in or relating to step ladders, trestles and the like
IPC: E06C1/22
Filed: 1945-11-02
Abstract: 603,869. Step-ladders. ROBB, J. K. Nov. 2, 1945, No. 29093. Drawings to Specincation. [Class 20(ii)] Step-ladders or trestles having extension pieces connected to the front and back legs, have the extension pieces detachably secured on the outer sides of the legs by pinching screws and bolts and nuts, each extension piece having one or more inclined slots for the reception of additional steps.
Patent GB-1180288-A (GB)
Title: Analysing Complex Signal Waveforms
Inventor: BEZDEL WINCENTY
IPC: G10L25/00
Filed: 1967-06-23
Abstract: 1,180,288. Speech recognition. STANDARD TELEPHONES & CABLES Ltd, 23 June, 1967, No. 29100/67. Heading G4R. Apparatus for analysing complex signal waveforms containing characteristic zero crossing distributions classifies zero crossings according to the time period in which they occur relative to preceding zero crossings and determines which category dominates. Pulses produced at zero-crossings of a speech waveform to be recognized are applied to circuits 1, 2, 3 which produce an output pulse whenever the interval between successive input pulses exceeds t 1 , t 2 , t 3  respectively, circuits 1, 2, 3 being essentially mono-stable RC circuits. The outputs of circuits 1, 2, 3 together with the original zero-crossing pulses are fed to gating circuits 4, 5 which produce output pulses in true and inverse form for zero-crossing intervals in the ranges t 1 -t 2  and t 2 -t 3  respectively. In circuit 6, an RC integrator is charged by t 1 -t 2  true pulses and discharged by inverse t 2 -t 3  pulses, the capacitor voltage being thresholded to give an output. Circuit 7 is similar, with the roles of t 1 -t 2  and t 2 -t 3  pulses reversed. Circuits 8, 9 produce output pulses when the output of 6 is greater than or less than the output of 7 respectively, provided a threshold is exceeded. Circuit 10 contains an RC integrator which is charged during pulses from 8 and discharged during their absence, the capacitor voltage being thresholded to give an output. Circuit 11 performs the same function for circuit 9.
Patent GB-315636-A (GB)
Title: Improvements in and relating to weighing apparatus
IPC: G01G1/06
Filed: 1928-10-10
Abstract: 315,636. Fitzpatrick, H. D., (Maatschappij tot Vervaardiging van Snijmachines. Volgens van Berket's Patent en van AndersÀ Werktuigen.)Oct. 10, 1928. Pendulum weight apparatus. - Indicating- mechanism for weighing-apparatus of the typecomprising duplex load counterbalancing devices. including rockable members with pendulous weights, each rockable member being guided between a fixed part and a movable part and' being suspended by flexible means' at the side of the fixed part is characterized by the flexiblemeans extending upwardly at opposite sides of each rockable member, so that the whole weight of each rockable member and parts carried thereby is firmly suspended at both sides of the member. Two rollers 1 carrying pendulous weights. 13 are each suspended by flexible bands 5, 10. The band 5 is secured to a fixed guide 2 and the band 10 is secured to an operating-member 8 which moves upwards when a load is placed on the scale thus giving a rolling movement to the drums between the guides 2 and the operating-member. In the unloaded position of the scale the pendulous weights occupy a raised position as indicated by chain lines and assume the vertical position shown in full lines when the scale is fully loaded. The centres of gravity Z of the pendulous weights remain within the lines of the suspending bands in every weighing operation. When in the position shown in full lines the pendulous weights may be displaced vertically for adjustment purposes. Additional flexible bands may be provided extending downwardly from the drum. The indicating pointer 17 is actuated from the operating-member 8 by a rack and pinion.
Patent GB-1012205-A (GB)
Title: Process for the production of vinyl chloride polymers
IPC: C08F14/06
Filed: 1964-07-15
Abstract: Polyvinyl chloride is produced by polymerizing vinyl chloride at -25 DEG  to -5 DEG  C. in an aqueous solution containing a protective colloid and one or more mineral salts inert towards vinyl chloride and at a concentration such that all the salt remains in solution at the polymerization temperature, in the presence of a free radical generating catalyst and a cycloolefin. Specified cycloolefins are cyclohexene, methylcyclohexenes, cyclooctene, cyclododecene, norbornylene, pentadiene, cyclooctadiene-1,3, cyclooctadiene-1,5 and cyclododecatrienes-1,5,9. The preferred colloid is polyvinyl alcohol. Specified salts are alkali metal chlorides and sulphates and alkaline earth metal chlorides. The catalyst may be trichloracetyl peroxide, which may be prepared in situ from trichloracetyl chloride and sodium peroxide.  The polyvinyl chloride may be used for making filaments and films. In examples, vinyl chloride is polymerized in aqueous media containing sodium hydroxide, acid potassium phthalate, sodium chloride, trichloracetyl chloride, sodium peroxide, polyvinyl alcohol and (1) cyclohexene, cyclooctadiene-1,3 or cyclooctadiene-1,5, (2) cyclohexene and (3) cyclooctadiene-1,3.
Patent GB-476074-A (GB)
Title: Improvements in driving units for motor vehicles
IPC: B60K17/04
Filed: 1936-10-27
Abstract: 476,074. Motor-vehicle driving-gear. ZAVODY TATRA AKCIOVA SPOLECNOST PRO STAVBU AUTOMOBILU A ZELEZNICNICH VOZU. Oct. 27, 1936, No. 29209. Convention date, Nov. 26, 1935. [Class 79 (ii)] In a vehicle having the engine 8 on one side of swinging halfaxles 1, 2, and the change - speed gear 7 on the other side, the shaft 9 connecting the engine and change - speed gear is located laterally of the axle driving- gear 3.. 6 so as to allow this shaft to be placed nearer the level of the axles. The shaft 9 may be situated in either of the positions I... IV, Fig. 1. The change - speed gear drives the axles through differential gear 10. The engine shaft may be coaxial with the shaft 9, as shown, or may be mounted symmetrically of the vehicle, in the latter case driving the shaft 9 through gearing.
Patent GB-459395-A (GB)
Title: Improvements in hinged tail boards for vehicle bodies
IPC: B60P1/26
Filed: 1935-10-23
Abstract: 459,395. Vehicle doors. BENSON I MOTOR BODY CO., Ltd., and BISSELL, J. E., Roebuck Street, West Bromwich. Oct. 23, 1935, No. 29220. [Class 108 (i)] In tail boards which are hinged so as to be capable of being swung about either their upper or lower edges j the tail board comprises a flap portion, a pair of arms pivoted on a common transverse axis to the lower rear end of the body, releasable means for securing the arms to the body with their free ends uppermost, a rigid cross-bar extending transversely and supported in the free ends of the arms, and the flap portion being adapted to swing about said cross-bar. A bar 8 supported in brackets 9 on the body member 10 has rotatably mounted on its extremities, arms 11 which are releasably secured to the body sides 5 by lugs 13 and pegs 14. The upper free ends of the arms or pillars 11 carry a transverse bar 16 upon which is hinged, by means of straps 18, the flap portion 7. Levers 20, 27 secured to the bar 8, are adapted by means of the handle 23 to press on. the flap portion and together with stops 22 keep the flap portion in the plane of the arms. To allow the flap portion to swing about its upper pivot the levers 20, 27 are withdrawn while it may swing about its lower pivot by releasing the arms or pillars 11. The bar 16 may be mounted in crutches at the free ends of the arms 11 when it is desired to make the flap portion detachable. Fig. 3 shows a modification in which the arms 11 are mounted on pivots 31 secured by brackets 32 to the body 10 while the flap portion 7 is retained in the plane of the arms 11 by lugs 33, pin 34 and cotter 36.
Patent GB-786591-A (GB)
Title: Improvements in the separation of gases occluded in liquids
IPC: B01D19/00
Filed: 1955-10-13
Abstract: <PICT:0786591/III/1> <PICT:0786591/III/2> <PICT:0786591/III/3> To avoid overloading an air separator 5 on the delivery side of a pump 4, a device 3 is fitted to restrict the flow of liquid to the pump when its air content exceeds a predetermined amount.  As shown in Fig. 2, accumulation of air in chamber 10 at a rate exceeding the rate of escape through a small orifice 19 causes float 14 to fall and restrict the liquid passage 15.  In a modification, Fig. 3, air accumulates within the bell 14a causing it to rise and obstruct the passage 12a.
Patent GB-1504769-A (GB)
Title: Adding treating agents to molten metal
IPC: B22D11/00
Filed: 1975-07-11
Abstract: 1504769 Casting processes; continuous casting CATERPILLAR TRACTOR CO 11 July 1975 [12 July 1974] 29303/75 Heading B3F [Also in Divisions C7 and F4] A treating agent 12 is added to molten metal as the metal flows through a nozzle 18 in the bottom of a ladle (13) on its way to a mould. The agent, in wire form, is fed through a tubular member 32 within the stopper rod (26) of the ladle and the exterior of the member 32 is cooled by passing a gas through passages (38), 31 in the stopper rod. The stopper rod may be disassembled into the member 32, a tubular baffle (41), and a ceramic portion 29 by unscrewing an end portion 27. The position of the stopper rod and thus the rate at which the metal flows into the mould is adjustable by a rotatable crank (59), Fig. 1 (not shown). The treating agent may be aluminium, titanium, zirconium, boron, or magnesium. More than one agent may be added by using a multiple cored wire.