baber/WOPTO huggingface dataset:
Patent GB-972037-A (GB)
Title: Switch construction
Inventor: LINDELL SIGURD INGVALD
IPC: H01H3/30
Filed: 1962-12-17
Abstract: 972,037. Load-break disconnecting switches; automatic circuit-breakers; protective arrangements. S. & C. ELECTRIC CO. Dec. 17, 1962, No. 47450/62. Headings H2B and H2K. The load-break disconnecting switch of Specifications 898,463 and 898,462 is provided with auxiliary tripping means effective to trip open the interrupter contacts promptly without the delay imposed by the performance of the full opening sequence of operations. The auxiliary tripping means comprise an electromagnet 179, Fig. 9, which, when energized, moves an armature 178. The armature, through links 174, 176, turns a shaft 170 which is connected by a vertical elongated insulator 146 to a shaft 144, Fig. 8, pivoted in a base plate 138 attached to the mechanism housing 22 of the disconnecting switch. The shaft 144 through links 143, 141 and 139 turns a lever 133 within the housing 22 and this lever 133, Fig. 4, engages and moves an extension 130 secured to the main latch 76. The latch 76 is turned in a clockwise direction so that it disengages from a detent 84 and so releases a main lever 86 to permit the opening of the interrupter contacts as described in the above Specifications. Fig. 12 shows three load-break disconnecting switches with a common power operator 198 in a threephase circuit. The auxiliary tripping electromagnets 179 and the operator 198 are connected in parallel for energization from a battery 194 under the control, of parallel-connected contacts 193a ... 193c of phase overcurrent relays 192a . . . 192c and contacts 197 of an earth fault relay 196. Thus in the event of a fault, one or more of the relays closes its contacts to cause the energizing of the electromagnets 179 and the releasing of the detents 84 to enable prompt opening of all the interrupter contacts 23. The switch operator 198 is also energized and turns the main operating shafts 21 to open the isolating contacts 14 and to reclose and relatch the interrupter contacts 23 in the manner described in the Specifications referred to above.
Patent GB-1059152-A (GB)
Title: Improvements in or relating to electric switchgear
Inventor: BEDDOE STANLEY
IPC: H02B11/28
Filed: 1962-12-17
Abstract: 1,059,152. Switchgear structures. ENGLISH ELECTRIC CO. Ltd. Dec. 16, 1963 [Dec.17, l962] No. 47493/62. Heading H2B. A circuit-breaker 16, withdrawable from a position in which its main isolating contacts 20. 21 are in engagement with contacts 11, 12 in the fixed structure 10 to the isolated position shown, has one or more earthing contacts 28, 29 associated with the main contacts 20, 21 and extendable, when the circuit-breaker is in the isolated position, to engage earthed contacts 36, 37 on the fixed structure. The earthing contacts 28, 29 are coaxial with and connected to the main contacts 20, 21 and in the operative position of the breaker engage contacts 26, 27 coaxial with and connected to contacts 11, 12. In the isolated position they may be slid telescopically with respect to the main contacts to engage either the contacts 26. 27 or the earthing contacts 36, 37, mounted on earthed shutters 34, 35, one being engaged with each so as to earth one of the fixed contacts 11, 12.
Patent GB-1357935-A (GB)
Title: Traction apparatus for cables
IPC: B66D3/12
Filed: 1971-10-13
Abstract: 1357935 Hauling; hoisting ALLMANNA SVENSKA ELEKTRISKA AB 13 Oct 1971 [14 Oct 1970] 47626/71 Heading B8B A driving means for a cable 14 comprises an endless belt 9 extending around two pulleys 3, 6, the belt applying a gripping action to the cable as it passes over the pulley 3 and releasing the gripping action as the belt passes around the pulley 6. The belt which is V-sectioned is provided with a cable engaging groove open to the outer periphery and the belt receiving V- grooves in the pulleys 3, 6, are dimensioned such that the belt groove is fully open as the belt passes around the pulley 6 and is closed up to grip the cable as the belt passes around the pulley 3. This arrangement provides sufficient grip between the pulley 3 and the cable 14 so that only one loop at the cable is required in use of the hoist arrangement shown, in which the belt 9 supporting the lower pulley 6 which through a bifurcated member 13 supports the fixed end of the cable 14, the pulley 3 being driven by a motor 1.  In the embodiment of Figs. 4 and 7 (not shown) the belt is formed in two parallel endless parts which are parted in passing around the lower pulley and are brought together to grip the cable over the upper pulley. In the embodiment of Figs. 5 and 8 (not shown) the cable is deflected clear of the belt as it passes around the lower pulley.
Patent GB-1009555-A (GB)
Title: Production of xylene
Inventor: LORZ WALDEMAR
IPC: C07C5/41
Filed: 1962-12-18
Abstract: Xylenes are produced by passing a charge comprising C8 acylic hydrocarbons with o without C4 hydrocarbons, e.g. isobutane, at 510-594 DEG C. and pressures up to atmospheric over a catalyst of eta-alumina containing 15-25% of chromium oxide, the alumina base being obtained by the dehydration of an alumina hydrate containing at least 60% beta-trihydrate. The catalyst may contain alkali metal equivalent to 0.6-1.5% of Na2O.  The charge may comprise 2,2,4-trimethyl substituted C5 hydrocarbon chains which yield mainly p-xylene and/or diisobutylenes which may be obtained by the dimerisation of iso-C4 hydrocarbons separated from the reaction product.ALSO:A dehydrogenation catalyst comprises eta-alumina and 15-25% of chromium oxide with or without 0,6-1,5% of sodium calculated as Na2O or 0,9-2,3% of potassium calculated as K2O.  The alumina base is prepared by the deyhdration of an alumina hydrate containing at least 60% of beta-trihydrate. Before incorporation of the chromium oxide, the dehydrated base may be steam treated to give a surface area of 100-300 m.2/g.  The catalyst may be prepared by heating the base which has been soaked in chromic acid and sodium chromate.
Patent GB-960989-A (GB)
Title: Spray-painting booths
IPC: B05B14/468
Filed: 1962-12-20
Abstract: A spray booth including a channel for spray-painting objects conveyed through the channel in a continuous or intermittent manner as set forth in Specification 935,857 in which the bottom of the channel is V-shaped and terminates into a longitudinal opening for discharging the ventilating air directly to a drip separator which is of substantially the same length as the channel and is connected to suction means for the ventilating air, further comprises means for the supply of a cleaning liquid introduced into the channel in such manner that it is caused to sweep over the V-shaped bottom in the form of a covering liquid film, the bottom of the channel being shaped in such manner that the opening is directed at one side towards an outlet shaft located to the side of the channel and serving as drip separator.  The drip separator may be provided with baffle plates and a further cleaning liquid supply.  There may be two openings in the V-shaped bottom, one directed to each side.
Patent GB-1281903-A (GB)
Title: Improvements in or relating to the dropping of airborne loads
Inventor: CLARK FRANK MILES
IPC: B64D1/02
Filed: 1969-10-02
Abstract: 1281903 Parachutes HAWKER SIDDELEY AVIATION Ltd 29 Sept 1970 [2 Oct 1969] 48565/69 Heading B7G [Also in Division F2] A release device for use in the dropping of airborne loads comprises a co-operating bolt 11 and nut 14 with a quick-pitch thread 12, both normally being held against rotation, and one of them being releasable for rotation so that the bolt and nut can separate from one another, with relative rotation, under the tensile load being transmitted by the device before release. As shown, the bolt 11 has a splined connection 21 with the housing 19 to prevent rotation, and is connected by lines 15 to an extractor parachute 16 and a main parachute pack 17. A line 27 connects the housing 19 to a load 18 to be dropped. The nut 14 is supported in the housing 19 by a thrust race 20 and is initially held against rotation by a spring-loaded sleeve 23 splined at 22 to the nut and at 24 to the housing 19. When the load 18 has been drawn a sufficient distance through the aircraft dropping hatch 32, a line 31 between the aircraft structure and the sleeve 23 tightens (Fig. 3, not shown) to draw the sleeve leftwards (Fig. 1) to allow the nut 14 to rotate and the bolt 11 to pull out, the extractor parachute then acting on the main parachute pack 17 (Fig. 4, not shown) to allow the main parachute to deploy (Fig. 5, not shown).
Patent GB-1452563-A (GB)
Title: Additive process for the production of printed circuit boards
IPC: H05K3/18
Filed: 1974-11-14
Abstract: 1452563 Surface treatment of epoxy resins ORION RADIO ES VILLAMOSSAGI VALLALAT 14 Nov 1974 [15 Nov 1973] 49247/74 Heading C3B [Also in Divisions C7 and H1] A printed circuit is produced additively on a glass reinforced epoxy substrate by cutting the latter to size, boring any necessary through holes, and pretreatment in a bath containing compounds having atoms with non bound electron pairs two of which atoms are in a common molecule, e.g. one or more of ammonium hydrate, ammonium rhodamide, urea, thiourea, mercaptoethanol, thiazole, amino acids such as cysteine, serine, thioglycollic acid; all with a pH 10 ammonium buffer and an additive, e.g. an alcohol facilitating solution in water, which break up the cross-linkages of the epoxy resin, so that a subsequent chromic acid etch discontinuously attacks the surface into a network of inner holes facilitating subsequent retention of metal. After the etch the surfaces are sensitized in an aqueous solution of palladium and stannic chlorides, and covered by a protective layer defining the circuit; so that the latter is formed by selective electroless deposition of copper, washing, and subsequent electrolytic strengthening and solder coating.
Patent GB-1414706-A (GB)
Title: Hydraulic control system for power transmission having a modulated friction clutch
IPC: F16H63/46
Filed: 1973-10-23
Abstract: 1414706 Clutch control TWIN DISC Inc 23 Oct 1973 [30 Oct 1972] 49298/73 Heading F2L In a power transmission system comprising a hydraulically operated clutch C of which the degree of slippage is controlled by the pressure applied to an actuating piston 24, a torque converter TC, and a multi-ratio gear mechanism controlled by clutches C1, C2, C3, C4 to drive an output shaft 40 at two alternative speeds in either direction, the pressure applied to the piston 24 is controlled by a modulating valve MV having a shiftable control element 66, 68 which is actuable by pressure in a chamber 8, and a control valve CV has an adjustable orifice 81 for bleeding fluid from the chamber 8. The arrangement enables the clutch C to be controlled either by hand through the element 66 or by foot through the valve CV. The valve MV comprises a spool 63 controlling an inlet 61 from a pump P, an outlet 62 connected by a conduit 4 with a spring-loaded valve 5 in the driven member of the clutch C acting to control the output speed of the clutch, and an exhaust port 76, and outlet pressure is conveyed by a passage 74 to an end of the spool so that a balance is maintained between outlet pressure and a spring 69, compression of which is varied by the element 66, 68. The chamber 8 is connected with the inlet 61 by a restricted passage 67, 70, and with the valve CV by a conduit 7. A rotary selector valve 10 controls application of pressure fluid to the clutches C3, C4 for the two forward ratios and to the clutches C1, C2 for the two reverse ratios.
Patent GB-1281453-A (GB)
Title: Outboard driving apparatus for toy and model boats
Inventor: ERNST MAX
IPC: A63H23/04
Filed: 1970-10-16
Abstract: 1281453 Toy outboard motors M ERNST 16 Oct 1970 [24 Oct 1969] 49388/70 Heading A6S An outboard toy motor comprises a housing 1 containing a battery 17 and an electric motor 4, the whole unit being attachable to a boat by means 3, 2 which may be swivelly attached to the housing for steering and may include, e.g. a suction cup for attachment to the boat. The motor 4 is detachably held in place in the lower part of the housing by screws 12, 13 passing through spring contacts 10, 11 fixed at their one end to the motor and which engage the poles of the battery 17 at their other ends. The battery 17 is contained in the upper part of the housing, which is formed to represent a motor chamber having a removable lid 23. Spring 11 may act as a switch via operating lever 20. The motor shaft 5 may be connected via a flexible shaft 7 to the propellor 8.
Patent GB-1469800-A (GB)
Title: Electric switch keyboard
IPC: G06C7/02
Filed: 1974-11-14
Abstract: 1469800 Mechanical switches N-DIMENSIONSInc 14 Nov 1974 49401/74 Heading H1N In a keyboard switch in which push buttons 14, Fig. 3, mounted in apertures 12 of the support plate 10 depress spring blade contact 18 attached to the plate 10 at their ends so that their other ends 26 engage fixed contacts 28, the contacts 18 carry magnets 22 co-operating with magnets 36 on the plate 10 whereby the contacts 18 are initially flexed and then suddenly released for positive operation. Further depression of the buttons 14 after operation results in bowing of the contacts 18 with a cleaning wiping action on the fixed contacts 28. The spring blade contacts 18 are supported by bars 20 on a frame 30 which is magnetically attached to the underside of the support plate 10 by co-operation with the magnets 36. A screw adjuster 32, 34 provides for movement of the frame along the length of the blades 18 to vary the flexure of the blades.
Patent GB-1249019-A (GB)
Title: Improvements in or relating to tone generator systems
Inventor: BETTS WILLIAM ROBERT
IPC: G10H5/06
Filed: 1969-10-09
Abstract: 1,249,019. Electronic musical instruments. MARCONI CO. Ltd. 5 Aug., 1970 [9 Oct., 1969], No. 49576/69. Heading G5J. A tone generating system comprises a crystal oscillator tone generator 1 supplying clock pulses at a frequency f to a chain code generator comprising a shift register 2 and binary dividers 3 and 4. The shift register 2 has a feedback system adapted so that the code generated by the outputs from the shift register and the binary dividers is 196 states long. Thus, the shift register divides the frequency f by 49. A decoder 5 recognizes 11 of the 196 states, and produces a pulse to NAND logic gate 6 when one of these 11 stages is generated. A second input to the NAND logic gate 6 is connected to the clock pulse generator 1. When the decoder 5 supplies a pulse, the NAND logic gate 6 will not pass a pulse. Therefore, for every 196 clock pulses supplied to the chain code generator 2, 3, 4, only 185 pulses will be passed by the NAND logic gate 6. Thus, the chain code generator multiplies f by 185/196. This frequency is then passed to subsequent chain code generators, where the process is repeated. Therefore, from outputs 8, 18, 28 &c. are obtained frequencies of f/98, f/98 (185/196), f/98 (185/196)<SP>2</SP> &c. If f/98 is the frequency of the highest note required, the outputs 8, 18, 28 &c. produce the frequencies of the notes of an equal tempered scale, as the ratio of adjacent notes in these scales is <SP>12</SP>#2, and 185/196 is approximately the reciprocal of <SP>12</SP>#2. By subsequent binary divisions at 8, 18, 28 &c., lower octave scales may be obtained.
Patent GB-1120567-A (GB)
Title: Improvements in or relating to circuit arrangements including signal limiters
IPC: H03K3/02
Filed: 1966-11-04
Abstract: 1,120,567. Gunn effect limiter circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 4 Nov., 1966 [15 Dec., 1965], No. 49652/66. Heading H3T. A circuit arrangement in which signals of varying amplitude are to be limited to a predetermined amplitude level includes a Gunn effect oscillator element biased to below its critical voltage level, the signals being applied to the element at amplitudes suitable to initiate oscillation. The signals may be superimposed on the bias or applied to an additional, preferably insulated, electrode provided on the element intermediate its ends.
Patent GB-1527169-A (GB)
Title: Methods of continuously producing prepregs
IPC: H01B3/54
Filed: 1976-12-01
Abstract: 1527169 Non-woven fabrics FELTEN & GUILLEAUME CARLSWERK AG 1 Dec 1976 [23 Dec 1975] 50065/76 Heading D1R A powdered or granulated resin is uniformly deposited upon a fibrous web which is then continuously passed without pressure through three heating zones maintained at successively higher temperatures so that the resin melts and impregnates the web, and the impregnated web is cooled. It is used to form a laminated electrical insulator. The web may be of paper or of already bonded "E" (alkali free) glass fibres. The resin may be epoxy, unsaturated polyester, silicone or melamine. It is applied by a vibrating sieve. The resin is preheated in the first zone, melted in the second zone and penetrates (impregnates) the web in the third zone. The formation of air inclusions is avoided. Cold air is used to cool the web.
Patent GB-1468649-A (GB)
Title: Method and apparatus for parallelism control of the grinding discs of a pulp grinder
IPC: D21B1/14
Filed: 1975-12-05
Abstract: 1468649 Disc mills YHTYNEET PAPERITEHTAAT OY JYLHAVAARA 5 Dec 1975 [9 Sept 1975] 50070/75 Heading B2A A disc mill having a stator disc secured with three pins at least one of which is heatable, to adjust the discs for parallelism, includes means to sense axial force between the discs and adjust the length of the heatable pin to maintain parallelism. To do this a strain gauge 11 is secured on the main shaft 9 responsive to length changes in the shaft which in turn are due to the axial force. Continuous control may be exercised, the system may be applied to a double or multiple disc refiner, and a pressure transducer may be used in place of a strain gauge.
Patent GB-1361669-A (GB)
Title: Reinforcing tapes
IPC: D04B21/00
Filed: 1972-09-06
Abstract: 1361669 Fabrics J BENNETT 6 Sept 1972 [29 Oct 1971] 50407/71 Heading D1K [Also in Division A6] A warp knitted ground fabric of warp chains 1 connected by unknitted yarns 2 has attached thereto by unknitted yarns 4 one or more carbon filament tows 3.
Patent GB-1043179-A (GB)
Title: Improvements in or relating to a control unit for a fluid-flow control valve
IPC: G05D23/12
Filed: 1963-12-20
Abstract: 1,043,179. Valves. DANFOSS A.S. Dec. 20, 1963 [Dec. 20, 1962], No. 50455/63. Heading F2V. A valve 2, Fig. 1, is operated by a thermallyresponsive actuator supported upon rods 6, which actuator has a movable part 8 engaging a rod 10 coupled to the valve stem. The part 8 is contacted by a spring 13, the other end of which abuts a disc 14 having a rim 15; the disc is slidable on the rods and the rim 15 threadedly engages on apertured knob or case member 16. The thermal fluid is contained in a casting 26 with a lower frame 27 which coacts with the rods 6 so that the casting and rest of the actuator is restrained from rotating. An outer casing 23 is screwed to the knob 16, which latter embodies an adjustable scale on a band 29 held by a clamp 30, the clamp acting as a stop in conjunction with casing 23. With the exception of the spring 13, the rest of the control unit components are of plastics material. In a modification, the actuator which is supported on a wall 36 (Fig. 2, not shown), engages the valve stem 38; a spring 39 is disposed between the actuator and a member 40 which has arms 41 passing through the wall 36 and having a knob 43 threaded thereon. In either embodiment, the actuator may be directly responsive to the temperature of the ambient air or a remote unit may be employed which is connected to the actuator via a capillary tube, e.g. 19, Fig. 1.
Patent GB-1411553-A (GB)
Title: Motor vehicle exhaust system and mountings therefor
IPC: F16L3/14
Filed: 1972-11-02
Abstract: 1411553 Clips TENNECO INC 2 Nov 1972 [23 Dec 1971] 50662/72 Heading E2B  A spring steel clip 33 comprises a pair of jaws 51, 53 and is suitable for supporting the exhaust conduit of an internal cobustion engine. The clip is of a single length of wire a loop (as shown) or two loops (Figs 4, 5 not shown) being formed intermediate the jaws 51, 53 to form a holding section 57. The holding section 57 surrounds a post 31 which is connected to a suspension strap 27. The strap 27 may be flexible as by being braided or being made of elastic material. Alternatively, the strap may be of metal and be substantially rigid in compression (Figs 4, 5, not shown).
Patent GB-1062049-A (GB)
Title: An improved hydraulic system for tractors
Inventor: HORSFALL HARRY
IPC: A01B63/10
Filed: 1963-12-27
Abstract: The subject matter of this Application is identical with that of Specification 983,099 but the claims relate to the power lift mechanism and the gear selector mechanism being supplied by one and the same pump.  Reference has been directed by the Comptroller to Specification 983,099.
Patent GB-510809-A (GB)
Abstract: 510,809. Electric battery lamps. MILLER, F. J., and MILLER, N. V. Feb. 10, 1938, Nos. 4151/38 and 3918/39. [Class 39 (ii)] A twin bulb electric battery lamp for cycles and the like comprises a battery casing a upon which is mounted a reflector housing or bell b containing the switching mechanism which comprises an insulating plate f, located between the battery casing and reflector c, separate fixed contact strips g, g<1> being mounted on the plate f to engage the centre contacts of bulbs c<1>, c<2> mounted in the reflector. The movable contact of the switch comprises a metal lever j, Fig. 3, pivoted on the insulating disc f by a rivet j' and provided with contact ears j', j' adapted alternatively to engage rivets h, h<2> which secure the contact strips g<1>, g on the disc f. A metal stud f' mounted at the centre of the disc f projects through an arcuate slot in the lever j and through an aperture in the battery casing into contact with one terminal strip e of the battery, electrical connection between the stud f<1> and lever j being maintained by a spring and washer f<2>. The other pole of the battery and the caps of the lamp bulbs are earthed to the metal casing. The operating handle j<5> of the switch lever projects through a slot in the casing from which it is separated by an insulating strip i and an extension f<3> on the disc f. The switch contact member is located in its " off " or either of its " on positions by a flexible metal bridge with three recesses into one of which the extremity of the switch lever is snapped. Specification 396,692 is referred to.
Patent GB-1211383-A (GB)
Title: Improvements in or relating to castors
IPC: B60B33/02
Filed: 1967-11-10
Abstract: 1,211,383. Castors. TENTE-ROLLEN G.m.b.H. & CO. 10 Nov. 1967 [21 Jan., 1967], No. 51199/67. Heading A4U. [Also in Division F2] In a castor a pivoted, laminated-spring, brake lever 10, having a tongue 13 for engaging the wheel rim, and a catch 11 for engaging ratchet teeth 12 on a ballbearing housing 5 surrounding the swivel axis, is operated to simultaneously lock the wheel against rolling and swivelling by a bolt 19 which is pressed continuously by the brake lever and which is projected by a foot-operated push button 18 against the action of a spring tongue 14 to a brakeoperating position in which it is latched. The bolt is released by a further operation of the push button in the same direction. An actuator housing 21, for the bolt and latching mechanism, is screwed into a tapped bore in an arm 16 riveted to the castor housing and secured in position of adjusted locking pressure by a checknut 22. The latching mechanism, of a type used in retractable ball point pens, includes a rotatable toothed shift sleeve 20 with internal splines and axial teeth at both ends, projections at different heights on the non-rotatable bolt 19 co-operating with the splines and ratchet teeth during movement of the bolt to rotate the sleeve by one ratchet tooth and alternately lock and release upward movement of the bolt. In modifications, the rotary member of the latching mechanism is a toothed disc or includes a pin or ball in a guide groove or a swivelling coupling pin. In further modifications the brake lever is a rigid rocker continuously biased by a spring, or is effective to prevent either rolling or swivelling of the wheel.