baber/WOPTO huggingface dataset:
Patent GB-650446-A (GB)
Title: Improvements in or relating to radio relay systems
IPC: H04B7/155
Filed: 1946-02-27
Abstract: 650,446. Two-way transmission. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 27, 1946, No. 6184. Convention date, Oct. 26, 1943. [Class 40 (iv)] [Also in Group XL (c)] In a radio relay system each repeater station' comprises a transmitter and two receivers, all operating on different carrier frequencies, and arranged so that reception by either of the receivers of carrier currents to which it is tuned causes it to be associated with the transmitter and disconnects the output of the other receiver during the reception period, thus conditioning the system for one-way use. As shown in Fig. 1 three frequencies are employed and are allotted to the transmitters (T) and receivers (R) as indicated by the subscripts 1, 2, and 3; the distances between stations being sufficiently large for transmitters using the same frequency to be substantially non-interfering. Control of unmanned repeater station (Fig. 2). Receivers R1, R3 are tuned to signals from West and East respectively, and transmitter T2 radiates in both directions. Reception of carrier by R1 or R3 causes the operation of electronic relay 41 or 42 respectively, whereupon the corresponding one of the relays 44 or 45 comes up over normally closed contacts of the other. If receiver R1 responds first, relay 44 energizes winding 50 of the polarized relay, and relay 53. The consequent closure of contacts w connects the output of receiver R1 to the input of the modulator in transmitter T2, and the operation of relay 53 connects up the transmitter power supply. The operation of relay 44 prevents relay 45 coming up should R3 subsequently respond to incoming signals, and ensures that conditions for one-way transmission are maintained. If receiver R3 is the first to respond to signals, operation of relay 45 controls the establishment of similar conditions for E.-W. transmission, energization of relay over winding 55 closing contacts e.
Patent GB-1298791-A (GB)
Title: Improvements in or relating to copying apparatus
Inventor: LANGE WERNER
IPC: G03B27/14
Filed: 1971-03-05
Abstract: 1298791 Feeding sheets PENTACON DRESDEN KAMERAUND KINOWERKE VEB 5 March 1971 6202/71 Heading B8R Original and copy sheets are simultaneously separated from piles carried on tables 3, 3a, respectively, and forwarded between roller pairs 10/1O and 11/11a to be superimposed between rollers 28 and 29. The sheets are separated by gear-linked friction rollers 6 and 6a which are driven via a friction coupling, together with the roller pairs, from a shaft 13 rotated by a motor 14. The separator rollers are driven through the roller 10 via a one-revolution clutch comprising a disc 18 engaged by a magnetically operable detent 20. The detent is periodically released by a control disc 21 which actuates a switch S controlling the detent magnet Ma1, thus permitting each separator to forward a single sheet before the detent re-engages. A second control disc 23 periodically actuates a switch S2 which causes feed rollers 28, 29 to be parted and a stop, carried on member 32, to be raised to intercept the pair of sheets. The stop is subsequently removed and the rollers caused to grip and forward the sheets to exposure drum 26. Each spring-pressed pile table carries a detector for determining when the pile is exhausted and for preventing further separation from the other pile.
Patent GB-572166-A (GB)
Title: Improvements in or relating to the production of articles of sponge rubber or the like
Filed: 1943-04-19
Abstract: 572,166. Weighing-apparatus. McKAY, R. F. (United States Rubber Co.). April 19, 1943, No. 6216. [Class 143] [Also in Groups II, V and VIII] A continuous length of sponge rubber or the like is prepared by delivering an aqueous dispersion of rubber on rubber-like material at a substantially constant predetermined rate to a foaming-apparatus from which the foamed dispersion is delivered to a moving surface whereon the foam is set. The latex is supplied to churns mounted on scales S provided with a double beam 177 and a screw-threaded beam 178<1> rotated by a motor 181<1> to traverse a rider 180. In setting up the apparatus the rider is moved to zero position, and the latex introduced into the churn is weighed on the lower beam of the double beam 177. The compounding materials are then introduced into the churn, and the necessary adjustment is made on the double beam to bring the pointer 186 back to zero. Weights are added to the rider to determine the rate of flow of latex to the foaming-cell and as the rider moves along the beam it compensates for the diminution in weight in the churn, so that, under correct operating conditions, the pointer 186 remains at zero. If the rate of flow is too fast or too slow, an arm associated with the pointer operates a release valve.
Patent GB-1458129-A (GB)
Title: Process for the preparation of beta-hydroxy-carbonyl compounds
IPC: B01J23/04
Filed: 1974-02-12
Abstract: 1458129 Aldol process SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 12 Feb 1974 06286/74 Heading C2C A process for the preparation of betahydroxycarbonyl compounds of which the carbon atom carrying the hydroxy group also carries a hydrogen atom comprises causing aldol condensation of an aldehyde in the liquid phase with a carbonyl compound of which a carbon atom bound to the carbonyl group carries at least one hydrogen atom, in the presence of a catalyst obtained by impregnation of a gammaalumina with a solution containing an alkali metal carbonate or an alkali metal compound which is converted by heating into an alkali metal carbonate (e.g. a bicarbonate, alcoholate, chelate or carboxylate), followed by heating at a temperature at which the carbonate loses carbon dioxide. Examples prepare 4-hydroxy- 6-methyl-2-heptanone from 3-methylbutanol; 4 - hydroxy - 2 - butanone from paraformaldehyde; 4 - hydroxy - 6,10 - dimethyl - 5,9- undecadien - 2 - one from citral; 4 - hydroxy- 4 - phenyl - 2 - butanone from benzaldehyde; 4 - hydroxy - 4 - (4 - acetoxyphenyl) - 2 - butanone from p - acetoxy benzaldehyde; 4- hydroxy - 4 - (4 - nitrophenyl) - 2 - butanone from p-nitrobenzaldehyde; acetone being the other reactant in each case; 2-hydroxypentyl phenyl ketone from butanol and acetophenone; 2-(1-hydroxybutyl)-cyclohexanone from butanol and cyclohexanone; and 2-ethyl-3-hydroxyhexanol from butanol alone.
Patent GB-1464315-A (GB)
Title: Apparatus for exchanging fuel elements and control rods in a nuclear reactor
IPC: G21C19/00
Filed: 1975-02-14
Abstract: 1464315 Fuelling reactors FRIED KRUPP GmbH 14 Feb 1975 [15 Feb 1974] 6436/75 Heading G6C Apparatus for transferring fuel elements and control rods in a nuclear reactor comprises a mast 4 which extends through an opening in a travelling working platform 1, and a gripper body 30 guided for upward and downward movement in the mast 4 and arranged to partake of the rotational movement of the mast 4. A pin 32 slidable in a sleeve 33 projecting from an extension 3 of the mast 4 has a roller 35 journalled to its lower end and adapted to run on a track 36 on a plate 8 having depressions 37 in the centre of which are holes 40 adapted to accommodate the pin 32. The mast 4 is supported by the platform 1 through a carrier ring 6 and a rotary ball ring mount 7. The carrier ring 6 consists of two horizontal plates 8, 9 separated by ribs 10 and welded to a sheet metal cylinder 11 carrying an annular plate 12, 13 for catching dirt and grease. The carrier ring 6 is supported on the platform 1 by three adjustable columns 14. On rotation of the mast 4, the pin 32 is positively engaged only at one of the rotational positions corresponding to the holes 40, there being four such positions spaced by 90 degrees in the embodiment described. The upper end of the pin 32 is attached via an arm 52 reinforced by a rib 53 to a sleeve 43 surrounding the mast 4 and two-armed levers 48 pivoted to the mast 4 serve to raise and lower the sleeve 43. One end of each of the levers 48 is connected to the upper end of the sleeve by a link 47 while the other end carries a handle 50. When the mast is to be rotated from one of the above-mentioned rotational positions, the handles 50 are moved downward and the sleeve 43 therefore raised and the pin 32 drawn upwards in the sleeve 33. Its lower end leaves the hole 40 and the mast 4 can then be rotated. When the pin has been moved away from the depression 37, the handles 50 are released and the sleeve 43 descends until the roller 35 rests on the track 36. If the mast 4 is to be locked again after rotating through 90 degrees, the roller 35 is allowed to run into the next depression 37 whereupon the pin 32 descends in accordance with the profile of the depression. The mast 4 is then rotated slowly until the lower end of the pin 32 enters the hole 40 and the mast 4 is locked in its new position. Rotation of the mast 4 is effected by an operator standing on the platform 1 by means of the handles 50. Provision is made to prevent rotation of the mast through more than 360 degrees in either direction which could cause detrimental twisting of the hoist cables and supply pipes.
Patent GB-931359-A (GB)
Title: Improvements in or relating to articulated conveyor belts
IPC: A24B7/14
Filed: 1962-02-20
Abstract: 931,359. Endless conveyers. A. SCHMERMUND. Feb. 20, 1962 [April 20, 1961], No. 6454/62. Class 78 (1). Each belt of a pair of convergent tobacco compressing and feeding belts, one of which is shown in Fig. 8, comprises outer links 23 pivotally connected by inner links 27 with a gap left between the outer links, the gap being sealed by a filler strip 33. In the embodiments shown in Figs. 2, 8 the filler strip is secured to a backing strip bolted to the inner link. In the left-hand side of Fig. 13, a filler strip 52 extends between grooves in the outer links and is supported by a bar 54 bolted to the inner link 50. The filler strip may be cemented to one outer link (as shown in the right-hand side of Fig. 13) or to both outer links. In the embodiment shown in Fig. 18, the filler strip is a cylindrical bar 62 between grooves in the outer links 63. The filler strip may be of rubber, metal or plastic, if metal the outer links may be provided with inlaid sealing strips of rubber or the like.
Patent GB-234927-A (GB)
Title: Improvements in tennis balls and similar balls having a gas content and in the manufacture thereof
IPC: B29C65/02
Filed: 1924-03-13
Abstract: 234,927. Dunlop Rubber Co., Ltd., and Penfold, A. E. March 13, 1934. Balls. - The inner core of a tennis or like ball having a gas content, is composed of two or more parts of non-porous material such as gutta perch and / or balata, the parts being joined and sealed with gastight joints. A preferred mixing for the material of the core has the following percentage composition by weight :-purined balata 25; washed balata 15; smoked sheet rubber 30; sulphur 10; zinc oxide 20. The material is formed into hemispherical cups B which are joined together and the joint sealed by means of a band e of the same material. The band e may be formed integral with one of the cups or may be applied separately. The core is covered by a layer of soft rubber c and is then vulcanized. The core may be inflated through the usual plug, or in the case of a plugless ball, by means of a mixture of sodium nitrite and ammonium chloride. The usual felt cover A is finally applied. According to the Provisional Specification the material of the core may have the following percentage composition by weight : deresinated balata, 15; balata 25; india-rubber 30; zinc oxide 20; sulphur 10. As a result of vulcanization the core loses its semi-rigidity, and becomes resilient.
Patent GB-549552-A (GB)
Title: Improvements in or relating to electromagnetic clutches
IPC: F16D27/112
Filed: 1941-05-21
Abstract: 549,552. Electromagnets LEAR AVIA, Inc. May 21, 1941, No. 6546. Convention date, July 20, 1940. [Class 35] [Also in Group XXIV] An electromagnetic clutch comprises a driving disc 16 having a clutching surface containing a non-magnetic region 36, and a driven disc 26 of magnetic material frictionally engageable with the driving disc 16. A tubular housing 11 of magnetic material surrounds and extends closely to the perimeter of the disc 16 and encloses a winding 20 and a core 21. The latter is slightly spaced from the hub 15 of the driving disc 16. When the winding 20 is energized the magnetic flux takes a path, as indicated by the arrows, and the discs 16, 26 are drawn together. The presence of the non-magnetic region 36 causes the lines of force to cross the gap between the two discs 16, 26 more than once. Springs 23, 38 cause separation of the discs upon de-energization, the disc 26 in the de-clutched position being held against a brake member 41. The non-magnetic region 36 may consist of a brass or copper ring, and each disc may have more than one such region. In a modification the non-magnetic region is formed by a groove 60, Fig. 4. In this construction the driving disc is shown connected to a reversible direct current motor 50 having the armature connected in series with a field winding 53 each half of which is selectively connectible to a direct current source 54 through a relay system comprising a lever 55 and solenoids 56, 57. Specifications 546,460, [Group XXX], and 550,131 are referred to.
Patent GB-985526-A (GB)
Title: Improvements in or relating to insulating refractory bricks and the production thereof
IPC: C04B35/14
Filed: 1962-02-20
Abstract: An insulating refractory brick comprises 60 to 97% by weight of kieselguhr particles containing 88 to 98% by weight SiO2 the remainder being inorganic impurities, and between 3-40% by weight of a sintered finely divided ceramic mass which comprises silicon dioxide and/or silicon oxynitride which is formed in situ by a chemical reaction inside the brick between elemental silicon and the oxygen-containing firing atmosphere during the firing process.  The brick is formed by sintering 60-97% by weight of the kieselguhr together with 2-35% by weight of silicon or an alloy containing from 80-99% silicon and optionally between 0.1-10% by weight of a mineralizing agent and optionally between 0.1-5% by weight of a sintering agent, in an oxygen-containing atmosphere.  The firing temperature is between 1100 DEG -1550 DEG  C.  At least 30% of the kieselguhr may be transformed to tridymite before firing.
Patent GB-456059-A (GB)
Title: Improvements in or relating to a method of drawing metal tubes and the products resulting therefrom
IPC: B21C37/18
Filed: 1935-03-02
Abstract: Fishing-rods are formed from taper metal tubes which may be of constant wall thickness, or of a thickness increasing or decreasing towards the smaller end.  The taper may be non-uniform along the length of the tube.
Patent GB-1035943-A (GB)
Title: Electrically operable protective device
IPC: H02H3/38
Filed: 1963-02-19
Abstract: 1,035,943. Protective systems. BROWN. BOVERI & CO. Ltd. Feb. 19, 1963 [Feb. 21, 1962], No. 6710/63. Heading H2K. In a protective relay system, such as an impedance or directional relay, in which a rectifier bridge comparator 2, 4 is used to compare operating and restraining components and a relay 5 is intended to operate when the components are balanced, a circuit arrangement is provided to supply to the comparator a component which counterbalances the force of a return spring of the relay. In the impedance relay arrangement shown, a moving coil relay 5 is connected for energization in accordance with a current J through a transformer 3 and rectifier bridge 4 and in accordance with a voltage U through a transformer 1 and rectifier bridge 2. A further current component is supplied to the relay 5 through a transformer 6 and rectifier bridge 7. This further component is limited by a Zener diode 9 to a magnitude such that it can provide a torque which just overcomes the force of the return spring of the relay and permits response of the relay when the operating current component becomes equal to the restraining voltage component. In another arrangement the further component may be provided by a separate D.C. source under the control of an over-current relay.
Patent GB-125743-A (GB)
Title: Improvements in or connected with the Moulding of the Metal Mounts of Diamond Tools.
Inventor: JOYCE GEORGE ALBERT
IPC: B22D19/06
Filed: 1918-04-22
Abstract: 125,743. Joyce, G. A. April 22, 1918. Diamond and like tools.-Diamonds are set in metal holders for use as diamond tools by casting the holder in a mould in which the diamond is held so as to be completely encased, part of the metal being afterwards removed so as to expose the diamond. As shown, the mould comprises upper and lower parts b, a positioned by studs c and provided with air vents d. The stone s, enclosed in fusible foraminous material e, such as wire mesh, is held by claws g formed on a rod f, the upper end of which is adjustably held in a groove h by a screw i.
Patent GB-787073-A (GB)
Title: Method and apparatus for bonding fibres together
Inventor: CHAVANNES MARC ALFRED
IPC: B29B15/12
Filed: 1954-03-09
Abstract: 787,073. Agglutinated fibrous sheet materials. CHAVANNES INDUSTRIAL SYNTHETICS, Inc. March 9, 1954, No. 6813/54. Class 140. A method of manufacturing batting comprises passing a stream of air or gas and a dry powdered thermoplastic resin, e.g. a copolymer of vinyl acetate and vinyl chloride. through a loose mass of fibres whereby particles of resin are retained in the mass which is then heated, e.g. from 300 to 425 F., and cooled, e.g. by air streams, so that some at least of the fibres are bonded by the particles. Fibres, e.g. of cotton, silk, flax, jute, sisal, glass, wool or cellulose, are fed to a garnetting machine 22 which arranges the fibres roughly parallel in a layer which is carried by a slatted belt 36 through a housing 64 where air, in which are entrained resin particles, is delivered by a conduit 47 to pass through the layer, baffles in the housing 64 redirecting the air through the layer and out by a conduit 68. The layer with the resin particles is transferred to a belt 70 passing around rollers 72, 74 which are mounted on a frame which reciprocates horizontally in a slot 76 to form a multi-layer mass 80 on a belt 78 which moves in a direction at right angles to the belt 70. The mass 80 next passes through rollers 88, 90, 92, 94, 96 which compact it and rotary cutters 98, 100 which trim or, if desired, shred the mass 80. A belt 102 then passes the layer 80 between apertured or slatted belts 110, 112 which run between hot air ejectors 134, 140 and air collecting ducts 136, 142 and then between similar cooling air ejectors 146, 152 and ducts 148, 154. The ejectors are at superatmospheric pressure and the collectors at subatmospheric pressure, e.g. by connecting each in a blower circuit, the air being recirculated. The ducts 110, 112 converge slightly in the heating zone to effect further compaction and are parallel in the cooling zone. The finished batting is then cut to shape, or may alternatively be shredded, garnetted and heated and cooled again, if desired with the addition of fresh fibres, and the new batting may be impregnated with fresh dry thermoplastic resin powder entrained in an air stream, before or after garnetting. The finished batting has a specific gravity of 0.04 to 0.26 depending on subsequent moulding and pressing, the resin accounting for 10 per cent to 50 per cent of the total weight, and air space comprising 70 to 99.5 per cent of the total volume. The resin may comprise 86 per cent polyvinyl chloride and 14 per cent polyvinyl acetate by weight. The product may be used for shoulder pads, packing or insulation.
Patent GB-1169400-A (GB)
Title: Improved arrangement in Motor Driven Reciprocating Percussion Machines with Exchangeable Tools.
Inventor: BERGMAN GUSTAV ALBERT
IPC: B25D17/08
Filed: 1967-02-14
Abstract: 1,169,400. Percussive tools. G. A. BERGMAN. 14 Feb., 1967, No. 6999/67. Heading B4C. A percussive tool such as a drill or pick in which various tools may be inserted into a tool holder 24 comprises a mechanism for revolving the holder during drilling but adapted to prevent rotation during a pick operation, the mechanism having a blocking sleeve 22 which can be moved by an external control device 42 into a position in which the tool is rotated and a further position in which the tool is locked. The blocking sleeve is rotatably mounted, via bearings 24<SP>1</SP>, on a guide member 16 for the piston rod 18 of a hammer including a piston portion 10 of an internal combustion engine. The blocking sleeve is connected by means of a roller-type clutch 32 with a sleeve 30 having a dog 34 for engagement with a helical groove 36 in the piston rod 18. The tool holder is provided with a dog 38 for engagement with a groove 40 in the piston rod 18. The control device includes a rod 42 having a pair of catches 44 which are arranged to co-operate with grooves 46 formed in the blocking sleeve 22 and grooves 48 formed in the tool holder. In operation, in order to rotate the tool holder during reciprocations of the piston, the rod 42 is moved so as to engage the catches 44 with thegrooves 46 and to prevent rotation, the rod is turned to engage the catches with the grooves 48. The catches and grooves may be replaced by the teeth of a worm and worm-wheel. Rotation of the rod 42 also controls the flow of pressurized fluid to the tool member for clearing purposes.
Patent GB-539045-A (GB)
Title: Improvements in or relating to vehicle bodies
IPC: B62D33/03
Filed: 1940-04-18
Abstract: 539,045. Vehicle bodies. FORD MOTOR CO., Ltd., and WHITBY, J. C. April 18, 1940, No. 7037. [Class 108 (i)] [Also in Group XXV] Movable or removable tail-boards and side-boards of vehicles are secured by spring-pressed sliding bolts which are adapted to be turned to hold them in the disengaged position. Fig. 2 shows a single bolt c arranged to secure both a side-board e and a tail-board. The bolt is slidable in lugs b on the rear body pillar a under the action of a spring f and in the engaged position shown engages over a plate d carried by the side-board e and passes through an eye d<SP>1</SP> projecting from a similar plate d<SP>1</SP> carried by the adjacent tail-board. The bolt may be withdrawn to an intermediate position in which it is disengaged from the plate d to release the side-board and can be retained in this position by turning the bolt by an arm g<SP>1</SP> thereon so as to engage a part g<SP>2</SP> beneath a stop h. Or the bolt may be fully withdrawn and be engaged with a second stop h<SP>1</SP> in which position it is disengaged also from the eye d<SP>1</SP> to release the tail-board. An arrangement is also shown in which two boards disposed in the same plane are secured by a common bolt which is mounted on a pillar between them and engages over projecting parts of plates such as d, Fig. 2.