baber/WOPTO huggingface dataset:
Patent GB-568984-A (GB)
Title: Improvements in and relating to electric circuit controllers
IPC: H01H50/30
Filed: 1943-12-03
Abstract: 568,984. Electromagnetic switches ; contacts. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Dec. 3, 1943, No. 20234. [Class 38 (v)] A shock-proof overload circuit breaker or other switch has a moving contact 41 mounted on the centre of a cantilever spring 31 and pressed firmly into engagement with the fixed contact 40 by the camming action of pins 45, 46 arranged on opposite sides of the contact 41 and carried by an operating member 44. In the form shown, the member 44 is carried by an armature 12 pivoted at its R.H. end and biassed by a spring 15 into the position shown. Upon overload in a bus-bar 11 the armature 12 is attracted downwards and a third pin 47 on the member 44 moving downwards in a slantwise direction forces the spring 31 to the left, a projection 48 on its upper end being simultaneously freed from the pin 45. The arrangement is such that the contacts open after the armature has completed about half its stroke.
Patent GB-1079486-A (GB)
Title: Improvements in and relating to concrete pressure vessels for nuclear reactors
IPC: G21C13/093
Filed: 1966-05-06
Abstract: 1,079,486. Reactor pressure vessels. SULZER BROS. Ltd. May 6, 1966 [May 7, 1965], No. 20301/66. Heading G6C. In a nuclear reactor pre-stressed concrete pressure vessel, an inner steel lining is mounted on and spaced from the vessel inner surface. The space between the liner and pre-stressed concrete is filled with concrete which may contain radiation absorbent material. Cooling pipes are also mounted in the space between the liner and concrete and the pre-stressing steel wires are contained in tubes embedded in the pressure vessel walls. The pre-stressing forces may be adjusted by controlling the temperature of the wires by means of either the cooling pipes or electrical heating.
Patent GB-531127-A (GB)
Title: Improvements in and relating to electric current measuring devices
IPC: G01R15/18
Filed: 1939-07-12
Abstract: 531,127. Current measurements. AKT.- GES. BROWN, BOVERI, & CIE. July 12,1939, No. 20326. Convention date, July 13, 1938. [Class 37] A conductor a carrying a continuous current to be measured is surrounded by an iron core b carrying a winding l through which flows a continuous current which is automatically varied so as to produce a magneto-motive force opposing that produced by the current in the conductor a, the value of the compensating current being measured by an ammeter A. The core b has a bridge c and is provided with air gaps o. Pivoted between the poles N, S of the core b is an armature e, Fig. 1, which may be polarized by a D.C. winding k. This armature varies a resistance f in series with the coils l and takes up an equilibrium position in which the magneto-motive forces due to the current in the conductor a and that in the coils l are balanced. The resistance f may be of the rolling- sector type shown or of the carbon compression type. The continuous current supplying the coils l and the polarizing winding k may be taken from an A.C. circuit h through a transformer t and rectifier g. In order to prevent sudden changes of flux in the core b due to sudden changes in the current in the conductor a, short-circuited coils may be provided on the core, or a solid iron core may be used. In a modification, Fig. 2, a discharge tube E having one or more anodes is arranged between the poles of the core b so as to be magnetically influenced thereby, and serves both as a rectifier and as an automatic regulator for the current in the coils l. Short-circuit rings s are provided on the core.
Patent GB-684994-A (GB)
Title: Improvements in or relating to sliding clasp fasteners
Inventor: MURRAY ERNEST ANDREW
IPC: A44B19/38
Filed: 1950-08-17
Abstract: 684,994. Sliding clasp fasteners. LIGHTNING FASTENERS, Ltd. Sept. 5, 1951 [Aug. 17, 1950], No. 20414/50. Class 44 An open-end fitting for a sliding clasp fastener comprises a box member adapted to be completely detached from and replaced on the fastener as and when required. Preferably the end fitting remains attached to one stringer in normal use, but can be detached therefrom if desired. The fitting comprises a sleeve member 5 clamped on the bead 3 of one tape and enclosed within a box member 6 which consists of parts 7, 8 hinged together along their lower edges. As shown in Fig. 5, the parts are formed with internal webs 9, 10 so as to provide two compartments when closed, one of which receives the sleeve 5 and the other a similar sleeve on the other stringer. The parts are normally held dosed by latch parts 17, 17a, and the hinge pin 20, Fig. 6, is resilient and located in a bore 22 in one part which is placed at both ends.
Patent GB-1098978-A (GB)
Title: Improvements in or relating to the manufacture of sealed-in envelope assemblies
Inventor: WORSDELL WILLIAM JOHN
IPC: H01J5/24
Filed: 1965-05-14
Abstract: <PICT:1098978/C1/1> In a machine for sealing foot-tube assemblies to the necks of glass envelopes during the manufacture of incandescent filament or discharge lamps or other devices, pairs of holders 12, 13 supporting foot-tubes and envelopes, respectively, in the correct relative positions for sealing are secured to brackets 11 carried by a steadily moving endless conveyer 6 and pass successively through heating means and seal-forming means 21, 22 mounted on a reciprocating carriage 25.  The carriage is driven by a motor 34 through a crank 36 and pivoted lever 39, and its motion is such that during the forward stroke the heating means and seal-forming means move along with the conveyer and are in operative engagement with respective pairs of foot-tubes and envelopes, whilst during the backward stroke the means move into engagement with different pairs in preparation for the next forward stroke.  In this way each pair of components is subjected to the full range of operations.  The means 21 consists of a series of gas heaters each comprising two arcuate burners 26 which are oscillated about their axes by a double-acting air motor 29 during the forward stroke of the carriage so that the components are uniformly heated all round and the neck of the glass envelope softens and collapses on the foot tube.  The means 22 is a similar heater which completes the seal and causes the surplus glass of the neck to fall away: it may be replaced by jaws if a pinchseal is required.  During the backward stroke the burners remain stationary relative to the carriage so tha the components can move forward between them. Further heaters 23 and neck-moulding dies 24 may be provided, and preferably the heaters 21-23 and the dies 24 are mounted on two or more similarly operated carriages.  The length of the forward stroke can be increased by duplicating the operating stations and moving the pairs of components forward two or more at a time. An annealing stage 44 may be provided.
Patent GB-1112501-A (GB)
Title: Method of and apparatus for regulating the pulse width of an electrical square wave
IPC: H03K5/00
Filed: 1965-05-14
Abstract: 1,112,501. Transistor circuits. TIDELAND SPECIALTY CO. Inc. 14 May, 1965 [19 May, 1964], No. 20556/65. Heading H3T. [Also in Divisions G4 and H2] A sound-producing device is energized by producing a 180 degrees square wave from a battery and reducing the width of each cycle to 120 degrees thereby eliminating the third harmonic and reducing battery consumption. Fig. 4 shows an amplifier 14 driving a fog horn 18 located at an off-shore installation. A 400 c/s. square wave from a transistor oscillator 12 is fed to the amplifier via two monostable circuits respectively comprising transistors 44, 46, capacitor 48; and transistors 52, 54 and capacitor 56. The monostable circuits are triggered by the leading edges of respective half cycles of the square wave from oscillator 12 and reduce the duration of the respective half cycles to approximately 120 degrees. The resulting pulses are fed via a push-pull amplifier comprising transistors 60 . . . 66 and an output transformer 72 so that the resulting waveform is equivalent to a square wave without its third harmonic component. The output from the collectors of transistors 62, 66 is coupled via diodes 84, 86 and transistor 74 to the timing circuits of the monostable circuits so that the energy in each half cycle fed to the fog horn 18 is substantially independent of battery voltage. The oscillator 12 may be keyed by a timing circuit operating contact 22 and has temperature stabilization arrangements 36, 38.
Patent GB-531278-A (GB)
Title: A devices for supporting articles in galvanic baths and the like
IPC: C25D17/06
Filed: 1939-07-15
Abstract: 531,278. Electrodes, supporting. DEUTSCHE GOLD - UND SILBER - SCHEIDEANSTALT, (formerly ROESSLER). July 15, 1939, No. 20634. Convention date, Aug. 31, 1938. [Class 41 ] A supporting device for an article 13 to be electroplated comprises a suction cup 1 formed integral with a rear cup-shaped face 3 bearing on a frame member 9 with which the article is maintained in electrical contact by means of a screw 4, a U-shaped spring 10, maintained spaced out by a coiled spring 12, and a plate 11. The screw may be of hollow form and adapted to be connected to means for varying the pressure within the cup. Alternatively, the electrical connection may be achieved by forming the cup of metallized indiarubber &c.
Patent GB-1223061-A (GB)
Title: Improvements in or relating to automatic frequency control circuits
IPC: H03L7/12
Filed: 1969-04-23
Abstract: 1,223,061. Automatic frequency control. ALBISWERK ZURICH A.-G. 23 April, 1969 [7 May, 1968], No. 20638/69. Heading H3A. In an afc system of the type in which the oscillator to be controlled is swept over a frequency band until it reaches the lock-in range of the control loop, the discriminator comprises two selective amplifiers 4, 5 symmetrically detuned relative to the discriminator centre frequency, and means are provided to discontinue the sweep only when the signal sweeps through the two amplifiers' passbands in a predetermined direction. This ensures that, if the oscillator forms the local oscillator of a receiver, the oscillator is only locked on the correct side of the received carrier. As described, the oscillator 1 to be controlled is frequency swept by sawtooth generator 17, and its output is mixed at 3 with the output from a reference oscillator 2 to produce a difference frequency which is applied to the two tuned amplifiers 4, 5. The output from the two amplifiers is fed to a differencing circuit 6 which provides the error control signal UF. The amplifier outputs are also fed to respective threshold circuits 7, 8 which produce outputs as the signal from mixer 3 sweeps through the amplifier passbands. If the sense of sweep is such that threshold 8 is triggered before threshold 7, the output from threshold circuit 8 is passed through AND gate 15 to set bi-stable 12 which enables AND 14. The subsequent triggering of threshold 7 then produces a signal which is passed by AND 14 to trigger bi-stable 11, the output from which actuates a changeover switch 16 to disconnect the sweep and connect the error signal UF to the oscillator 1. With the opposite sense of sweep, threshold 7 triggers before threshold 8, gates 14, 15 remain inhibited and bi-stable 11 is not triggered. Changeover switch 16 therefore remains in the position in which the sawtooth generator 17 provides a sweep signal to oscillator 1.
Patent GB-869414-A (GB)
Title: Improvements in or relating to apparatus for the production of heavy water
Inventor: PRATT HENRY REGINALD CLIVE
IPC: B01D59/32
Filed: 1956-07-04
Abstract: <PICT:0869414/III/1> Apparatus for thee production of heavy water comprises a dual-temperature H2-H2O D-exchange plant for producing a D-enriched product, which comprises a combination of a single exchange tower 12 consisting of alternate water-water vapour countercurrent contacting sections 13 and low temperature, e.g. 90 DEG C. vapour phase H2-H2O D-exchange catalyst beds 14, and a plurality of high temperature, e.g. 600 DEG C. H2-steam D-exchange catalyst beds 16 and H2O-steam countercurrent contacting columns 15 so arranged that water passes through the contacting columns, while H2 and water vapour pass alternately through the contacting columns and the catalyst beds.  Water enters the "Trail" column 12 at 11 and flows down countercurrent to H2 and steam The D-enriched water flows through contacting columns 15, 15a, 15b and is withdrawn at 18b and transfers D to the H2 and steam which passes in countercurrent up columns 15 and catalyst beds 16 with associated heat exchangers 17. The D-poor H2 from the top of the "Trail" tower is recycled through 19.  D-enriched H2 may be withdrawn through 20 and condenser 21, from which water is returned through 22, to distillation apparatus 23 as in Specification 869,413, whence the D-rich fraction at 27 is converted to heavy water.  The D-poor fraction passes through rehumidifier 24, through which water is circulated by pump 26, catalyst beds 16a, 16b with associated heat exchangers 17a, 17b, and contacting columns 15a, 15b.  Alternatively, the water may pass to waste at 18, and fresh water be supplied to columns 15a, 15b at 11a, 11b.  In a simpler apparatus (Fig. 1, not shown) the distillation is eliminated, and D-enriched H2 or H2O may be withdrawn below the "Trail" column.
Patent GB-1434223-A (GB)
Title: Universal joints
IPC: F16D3/41
Filed: 1973-05-01
Abstract: 1434223 Hookes joints UNI-CARDAN AG 1 May 1973 [26 May 1972] 20720/73 Headings F2U and F2B In a Hookes joint, hollow cylindrical housings 4, 4b, 4c, 5b of bearings 11 for the cross joint pins 2, in the fork 6, 6a, 7a eyes, each engage a surface 10 of the cross member 1 which is coaxial with the respective pin 2, and diverges radially inwardly. The surfaces 10 may be conical or parts of a common sphere. The bearing housings 4, 4b, 4c, 5b may be retained either by spring rings, Fig. 2, and 48, Fig. 11, or by a deformed end 37, Fig. 9. The housings may either be blind with end walls spaced from the pins or have plastics covers 40. The cross-member 1 may have lubricant bores 16 extending radially from a central chamber 17 defined either as shown, or by an axial bore in an axial boss in a median web, Fig. 6 (not shown), or by two covers 18 with screw-threaded extensions, Fig. 8 (not shown). The joint may additionally include sealing rings 41, 42 which may be integral, merging with one another at 43, Fig. 12.
Patent GB-1494886-A (GB)
Title: Method of producing morpholine compounds
IPC: C07B61/00
Filed: 1976-05-20
Abstract: 1494886 Morpholine derivatives TEXACO DEVELOPMENT CORP 20 May 1976 [2 June 1975 (2)] 20807/76 Heading C2C A process for the production of a morpholine derivative of the formula wherein R<SP>1</SP>, R<SP>2</SP>and R<SP>3</SP> are independently hydrogen or alkyl, and R<SP>4</SP> is hydrogen or an optionally substituted alkyl, cycloalkyl, saturated heterocyclic or aryl radical, comprises contacting a glycol of the formula with ammonia or an amine of the formula R<SP>4</SP>.NH 2  in the presence of a phosphorus compound at a temperature of from 220‹ to 350‹ C. under a pressure sufficient to maintain the reactants in the liquid phase. The phosphorus compound is suitably an acidic metal phosphate, a phosphoric or phosphorous acid or anhydride, an alkyl or aryl phosphate or phosphite ester, an alkyl- or aryl-substituted phosphorous or phosphoric acid, an alkali metal salt of phosphoric acid, a thioanalogue of the foregoing, or a mixture thereof.
Patent GB-714391-A (GB)
Title: Improvements in cooling fins for heat exchanger tube coils
IPC: F28F1/32
Filed: 1952-08-19
Abstract: 714,391. Tubular heat-exchange elements; refrigerating. BOLINDER'S FABRIKS AKTIEBOLAG. Aug. 19, 1952 [Aug. 25, 1951], No. 20830/52. Classes 29 and 64(3) A fin 2 adapted to be secured to parallel tube sections 1 of a heat - exchanger coil used for example as the absorber of continuously operating absorption refrigerating apparatus com-  prises a U-shaped sheet of metal such as aluminium . having slots 3 extending through the bend of the sheet and spaced to accommodate the tube portions 1, a parallel or tapered cotter pin 4 being inserted through the bend portion of the fin to lock the fin in position on the tube coil. The bottom portions of the slots 3 in which the tubes are received may be provided with flanges.
Patent GB-820058-A (GB)
Title: Cover for the floor of a motor-vehicle or the like
IPC: B60N3/04
Filed: 1956-07-05
Abstract: 820,058. Mats for vehicles. ETABLISSEMENTS BONNERON GUMET & CIE. July 5, 1956 [Aug. 31, 1955], No. 20841/56. Class 142(4) A flexible mat of rubber or a synthetic plastic has ribs 2 separated by channels 3, the channels leading to collectors 4 which carry mud and water to a drainage recess 5. The recess leads to a pipe 6 which empties outside the vehicle. A ridge 7 is provided around the edges. The pipe may be formed integrally with the mat or may be seated in a recess in the upper or lower surface of the mat. The ribs 2 and channels 3 may have a cross-section as shown in Fig. 3. The channels 3 may be inclined from the centre of the mat towards the collectors 4 to facilitate drainage.
Patent GB-940131-A (GB)
Title: Improvements in display cartons
Inventor: SMITH DAVID ERNEST
IPC: B65D5/52
Filed: 1961-06-09
Abstract: 940,131. Display cartons. TILLOTSONS (LIVERPOOL) Ltd. May 18, 1962 [June 9, 1961], No. 20861/61. Heading B8P. [Also in Division G5] In a carton in which the lid may serve as a display panel, the lid is formed in two parts 2, 5 hinged to opposite walls and overlapping at 16 where they are secured together, a transverse hinge 14 being formed adjacent the overlap, the part 2 being separable from the adjacent wall by lines of weakness 17 extending into the adjacent wall 1. The lid is opened by separating parts 2, 18 from front wall 1 and folding the lid part 2 along hinge line 14 to rest upon flanges 9 in display position. The separable lid part 2 may be formed with an upper extension formed out of the port 5 to enhance the display. The carton may have a press lock or like bottom and the outline of the weakened portion modified.
Patent GB-1471733-A (GB)
Title: Rotary offset printing machine
IPC: B41F7/08
Filed: 1974-05-10
Abstract: 1471733 Printing machines MASCHINENFABRIK AUGSBURG - NURNBERG AG 10 May 1974 [11 May 1973] 20880/74 Heading B6C A rotary offset machine has at least two printing cylinders 5, 6 bearing against one transfer cylinder 4, each printing cylinder having an inking and a damping system, at least one of the printing cylinders having a damping system which follows the inking system in the intended direction of rotation of the printing cylinder. As shown, damping systems 9, 10, 11, 12 may be provided, so that the inking systems 7 and 8 have a damping system at either side. In the embodiment of Fig. 1 (not shown), only a single damping system is provided for each printing cylinder, each damping system following its associated inking system in the intended direction of rotation, and the applicator and distributer rollers of the damping systems have inkreceptive surfaces.
Patent GB-1106253-A (GB)
Title: Limit switch mechanism for hoists
Inventor: SUMPTER MAURICE BEVAN
IPC: B66D3/24
Filed: 1965-05-18
Abstract: 1,106,253. Limit switches on winding apparatus. JOSEPH LUCAS (INDUSTRIES) Ltd. 10 Aug., 1966 [18 May, 1965], No. 20926/65. Heading B8B. A limit switch mechanism for a cable drum 10, responsive to the amount of cable left on the drum comprises a member 12 actuable by the cable on the drum and arranged to operate a fluid valve 21 and then an electrical switch 17 if operation of the valve 21 does not cause the drum to stop. A roller 13 engaging the cable on the drum is mounted at one end of the member 12 and causes the latter to pivot at 20 to vary the engagement between the valve 21 and a cam 12a adjustably secured to the other end of the member 12. Depression of a spring- loaded plunger of the fluid valve 21 breaks the fluid circuit for a fluid motor driving the drum 10. A plunger 14 pivoted in slotted connection with the member 12 operates the electrical switch 17 via an adjustable sleeve 15. The switch 17 breaks an electrical circuit controlling either a valve in the fluid motor supply line or a switch for the fluid supply pump. In the embodiment of Fig. 2 (not shown), a shoulder on the plunger pivoted to the member actuates both the fluid valve and subsequently the electrical switch.
Patent GB-639510-A (GB)
Title: Improvements in and relating to high frequency electrical heating methods and apparatus therefor
IPC: B23K10/00
Filed: 1948-08-09
Abstract: 639,510. Electric heating by arcs and discharges. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 9, 1948, No. 20946. Convention date, Aug. 28, 1947. [Class 39 (iii)] [Also in Group XL (a)] A H.F. generator 4 supplies energy at 1,000 megacycles to electrodes 2, 3, causing a discharge to take place across the space 1 formed between them. A gas is supplied under pressure from a source 5 and the resultant flame 12 issues from the orifice 6 on to the material to be heated. It is stated that polyatomic gaseous molecules are disassociated by the H.F. discharge through the gas and are re-combined in the vicinity of the workpiece where latent heat is added to the flame. A similar phenomenon is said to take place with respect to ionization of the gaseous particles. Cooling water from a source 8 may be arranged to flow through the central electrode 2.
Patent GB-1275684-A (GB)
Title: Improvements in or relating to pipe couplings
Inventor: LOCKE WALTER FREDERICK
IPC: F16L37/23
Filed: 1970-05-01
Abstract: 1275684 Pipe &c couplings FPT INDUSTRIES Ltd 3 May 1971 [1 May 1979] 21060/70 Heading F2G A coupling for pipes, tanks &c. which may be separated by pulling apart its two constituent members A, B comprises an inner sleeve 12 of the first member A supporting an outer sleeve 15 biased leftwards by a spring 17 so that a bead or dimples 19 at its end hold locking detents 20 loosely mounted in a sleeve 23 of the second member B against the inner sleeve. When the coupling members A, B are pulled apart, Fig. 3 (not shown), the inner sleeve 12 is slidden leftwards relatively to the outer sleeve 15 while the spring 17 is compressed, until the locking detents 20 ride off the inner sleeve 12 and the coupling is released. Flexible collars 26 protect the coupling. As shown, each member A, B is provided with a valve 27 spring-biased to the closed position and automatically opened when the members A, B are coupled. In one modified form, Fig. 1 (not shown), the valves 27 are omitted, and in another modified form, Fig. 5 (not shown), the valves are so shaped as to provide a flow path of constant area along the members A, B.
Patent GB-517286-A (GB)
Title: New or improved means for operating door and like bolts
IPC: E05C9/06
Filed: 1938-07-16
Abstract: 517,286. Multiple bolt fastenings. OVERTON, W. July 16, 1938, No. 21147. [Class 44] A number of bolts (three shown), guided in sleeves b, are shot by a central rotatable member d to which the bolts c are connected by links e which move over the dead centre position just before the bolts are fully shot into the keepers g. Outward movement of the bolts is resisted by springs k which are compressed between fixed collars i in the sleeves and collars j on the bolts and resist release movement of the bolts from shot position by holding the links in movement-limiting abutment against the walls of a casing a enclosing the operating mechanism. The casing is recessed at s to accommodate the links in bolt-retracted position. As described, member d comprises a pair of spaced discs between which the inner ends of the links are pivoted on pins o. When the sleeves and bolts are not arranged radially as shown, short lengths of suitably guided chain or other transmission may be used between links and bolts.