baber/WOPTO huggingface dataset:
Patent GB-1060363-A (GB)
Title: Improvements in or relating to an apparatus for machining metal sheet by electrolytic jet etching
Inventor: SHEPARD STANLEY CARDEN
IPC: B23H9/16
Filed: 1966-01-14
Abstract: <PICT:1060363/C6-C7/1> Sheet metal is etched electrolytically using a jet of electrolyte which is guided on a predetermined path by a pantograph.  The D.C. source is controlled so that the metal sheet may be cut through, or surface etched as an engraved pattern.  A conical flask 3 contains an electrode 8 and electrolyte 9 which is forced by air pressure through a flexible tube 7 to a jet 1.  The jet is mounted in a block carried on the pantograph which consists of a pair of parallel-mounted screwed rods, Fig. 7 (not shown), which are motor driven and carry further blocks in which another screwed rod is mounted transversely and is separately motor driven thus providing movement in two directions.  The transverse rod carries a block guiding the jet.  The conical flask may be provided with a spring-operated clamp on the stopper, Fig. 3 (not shown), which releases excess pressure; the compressed air feed also has safety release valves.  Electrolyte specified is a mixture of dilute H2SO4 and HNO3 and applying 150 to 300 V with a current of 80 m.A., stainless steel 0.003" thick is cut through in 5 to 10 secs.
Patent GB-985961-A (GB)
Title: Stitch control mechanism for blindstitch sewing machines
IPC: D05B1/24
Filed: 1963-01-16
Abstract: 985, 961. Sewing machines. SINGER CO. OF CANADA Ltd. Jan. 16, 1963 [March 12, 1962], No. 1904/63. Heading D1G. In a blindstitch sewing machine comprising an oscillating ridge former pivoted on a support which is movable between upper and lower positions for producing "single" and "skip" stitches respectively, and means for locking the support in the upper position to prevent the formation of skip stitches, a lifting bar oscillatable about a fixed pivot is operatively connected at one side of the pivot to the support, and at the other side to an actuating member, a first gear carried by a main shaft meshes with a second gear coupled through a cam to the actuating member, spring means biasing the latter against the cam, whereby rotation of the shaft moves the actuating member to raise and lower the support. A shaft 27, carrying a ridge former 28, is pivoted on a support 31 which can be raised to a position in which the oscillating needle 16 engages the ridge formed by member 28 on oscillation of shaft 27 via a linkage 22a, 22, 24 from an eccentric on the main shaft 12, or can be lowered to prevent such engagement. An arm 32, defending from support 31, carries a screw 33 abutting an arm 48 on a bar 34 pivoted at 50 to the machine frame. Bar 34 is pivoted at 36 to an arm 35<SP>1</SP> on one end of a pivoted shaft 35. An arm 35<SP>11</SP> on the other end of shaft 35 carries a roller 39 spring biased against a cam 44 driven by gearing 22, 42 from shaft 12. The arrangement is such that arm 48 is oscillated to co-operate with arm 32 for depressing support 31 at each alternate stitch. A slidable plunger 58 may be advanced against spring bias to engage an arm 59, depending therefrom, with the upper end 38 of arm 35<SP>11</SP> and thereby lift roller 39 from cam 44. Support 31 then remains in the raised position and no skip stitches are produced. Plunger 58 is retained in the advanced position by a spring-biased catch 63 which may be tripped, to release plunger 58, by the tapered forward end of a plunger 70 when the latter is advanced against spring bias.
Patent GB-399363-A (GB)
Title: Improvements in and relating to cinematographic target apparatus
IPC: F41J7/06
Filed: 1933-01-20
Abstract: 399,363. Kinematograph targets. RIVAL, P., Beausoleil, Alpes Maritimes, France. Jan.20.1933, No.1907. Convention date, Jan. 20, 1932. [Class 20 (i).j A kinematograph screen covers a number of pivoted shutters which are oscillated at intervals to uncover targets by means which are synchronized with the picture projection apparatus. The target 1 on which the moving picture is projected covers a number of pivoted shutters 3 capable of being raised by electromagnets 8 which are energized from a rotating disc 13 driven from the picture projecting mechanism. The disc 13 is of metal and is provided with an insulated backing 13b and with concentric series of apertures to hold contact plugs 17 which coact with contact blades 18 to energize the electromagnets 8 and lamps 12. The two series of blades, Fig. 5, are raised and lowered alternately by means of spiders 26, cams 25 and a stop 27 on the rotating disc. Lamps 37 above the targets indicate the target struck and the circuits of these lamps are controlled by latches 34 and contact strips 32 on the targets which contact as the target is struck and rotated against the action of springs, the latches being lifted to release the targets by rods 38 and levers 40 when the shutters drop by gravity after the current energizing the lifting magnets has been cut off. Cards illustrating the subjects projected are placed in a box 42 and are delivered as souvenirs to the marksmen by means of a puncturing core of an electromagnet 46 which is in circuit with the indicating lamps 37, a bell 47, and a lamp 48 being also actuated with the striking of a target.
Patent GB-764223-A (GB)
Title: Process for obtaining sugar from sugar cane
Inventor: PRAHL GERHARD
IPC: C13B30/02
Filed: 1955-01-21
Abstract: In a process for obtaining cane sugar from a cane-sugar-molasses mixture by crystallizing out the sugar and separating it by centrifuging, successively three times the mixture is, after the second such centrifuging, treated centrifugally to remove the greater part of impurities before the third crystallizing out of sugar takes place.  Preferably the second stage product is diluted with hot water before the treatment.  Sludge is discharged continuously or periodically from the centrifuge.
Patent GB-358390-A (GB)
Title: Improvements in or relating to regulators for hot water supply devices
IPC: F24H9/20
Filed: 1931-01-20
Abstract: 358,390. Geyser gas valves. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. Jan. 20, 1931, No. 1937. Convention date, Jan. 20, 1930. [Class 135.] A valve controlling the supply of gas to a water heater is actuated by gas pressure under the control of an auxiliary valve actuated by the drop of pressure in the water supply pipe occasioned by opening a hot water draw-off tap, and of a thermally actuated auxiliary valve adapted to close the conduit supplying the lighter burner in the event of the burner being extinguished. The main gas valve 38 controlling the connection between the main gas supply pipe 34 and the pipe 40 leading to the burner is carried by a spring-loaded diaphragm 36. The two sides of the diaphragm are connected by conduits 31, 13 and 37, 14 with the two sides of the control valve 9. The valve 9 is carried by a hollow spindle 8 supported by a pair of diaphragms 6, 7, and is held in the open position when no water is flowing by springs 21. The water supply enters through a branch 4 and passes through a Venturi pipe 5, throttled by a needle 18 on the valve spindle, to the heater. When water is flowing the reduced pressure at the Venturi neck is transmitted through the radial and axial passages 20, 19 to the chamber 2, thus causing the control, valve to close. If the pilot burner is alight pressure in the chambers 35 and 11 is vented through pipe 37, passages 14, 16, 17, pipe 41 and pilot burner, thus allowing the main valve to open. The outlet from the pipe 41 is controlled by a valve 48 having an axial passage 44 leading to a pilot burner 46 and actuated by a thermal member 47 supported by arms 48. In a modification the control valve and the actuating diaphragms are arranged in separate casings and are coupled together by a lever.
Patent GB-1115830-A (GB)
Title: Resilient suspension for endless-track type tractors
IPC: B62D55/14
Filed: 1967-01-13
Abstract: 1,115,830. Endless track vehicle suspension; endless track vehicles. CATERPILLAR TRACTOR CO.. 13 Jan., 1967 [9 Feb., 1966], No. 1954J67. Headings B7D and B7H. Suspension means, for use in an endless track tractor having a track frame at each side of the tractor, comprises a pair of downwardly divergent wall plates 18, 20 adapted to extend longitudinally of a tractor, track rollers 14 disposed between the wall plates and cushion means 24, which are stressed in both shear and compression, disposed between the -wall plates and the ends of the roller. Each cushion means 24 comprises' a rubber element bonded to and between a plate 25 secured to a wall plate 18 or 20 and a plate 26- with wedge-shaped end pieces 38 through which it is bolted by bolts 36 to 'a wedge-shaped adaptor 28 supporting one end of a track roller shaft 30. Tightening of the bolts 36 prestresses the rubber elements which are held in their assembled positions by rails 40 engaging the adaptors 28 and secured by bolts 43 to partition plates 45 interconnecting the wall plates. Dirt ingress to the track is prevented by the rails 40 and to the track rollers by seals 31 and semicircular ribs 32 on the adaptors 28.
Patent GB-714417-A (GB)
Title: Improvements in or relating to reciprocating internal combustion engines and cylinder heads therefor
Inventor: ELLIOTT ALBERT GEORGE
IPC: F02F1/24
Filed: 1951-01-25
Abstract: 714,417. Cylinders. ROLLS-ROYCE, Ltd. Jan. 18, 1952 [Jan. 25, 1951], No.' 1983/51. Class 7(2) Inclined inlet and exhaust valves 22 are arranged in a cylinder head having an approximately oval-mouthed combustion chamber 17 and plane surface portions 20 overlapping the cylinder bore so that one valve axis 11a or 12a lies in a first plane 13 at right angles to the crankshaft axis and the other valve axis lies in the same plane or in a second plane adjacent and parallel to the first plane, and the axes are arranged so that the intersection 16 between them, if they lie in the same plane, or the intersection between the one lying in the first plane and the orthogenal projection of the other on the said first plane, is in a third plane 14 containing the cylinder axis and crankshaft axis, a spark plug bore 18 being situated near the third plane. The first plane 13 is preferably arranged to contain the cylinder axis, whereby the oval mouth 17a of the chamber 17 forms equal crescent-shaped flat surfaces 20 on the underside of the cylinder head overlapping the cylinder bore; alternatively, the second plane is displaced from the cylinder axis so that one of the crescent shaped surfaces is eliminated The side wall of the combustion chamber is recessed, Fig. 3, to enlarge the area of flow past the edges of the valves when open.
Patent GB-553590-A (GB)
Title: Appliances for playing games of skill
IPC: A63F9/02
Filed: 1942-02-13
Abstract: 553,590. Games of skill. BARTLE, R. E. Feb. 13, 1942, No. 1995. [Class 132 (iii)] An appliance for playing games comprises a rod 1 with base 2, handle 3, pegs 4 at various levels and a ring 5. In use, the appliance is held by the handle and jerked up and down to cause the ring to lodge upon the pegs and score accordingly.
Patent GB-1118643-A (GB)
Title: Rubber-sandwich suspension units
Inventor: PRESTON MALCOLM OTTO
IPC: B60G11/22
Filed: 1966-01-15
Abstract: 1,118,643. Vehicle suspensions. VAUXHALL MOTORS Ltd. 15 Dec., 1966 [15 Jan., 1966], No. 2007/66. Heading B7D. [Also in Division F2] A rubber sandwich unit for vehicle suspensions comprises a rhomboidal-prism hub member 12 with the longer sides of the prism ends parallel to the transverse centre axis 26 about which the hub member 12 is adapted to rotate, a pair of rubber blocks 14, 16 each bonded to the respective one of a pair of relatively offset faces 18, 20 of the hub member 12, and a pair of mounting plates 22, 24 each of which is bonded to the corresponding outer face of a block 14 or 16. The faces 18, 20 may be flat or, as shown, curved in the form of convexly cylindrical surfaces the axes of which are parallel to the axis 26, the mounting plates 22, 24 and the bonded faces of the blocks 14, 16 having corresponding cylindrical surfaces. During rotary movement of the hub 12 the rubber blocks 14, 16 are stressed in compression and shear to provide a progressively increasing load/deflection curve. The inner faces of the mounting plates may be arranged at an angle to the corresponding outer faces of the hub member if a steeper curve is required. In a trailing-arm rear suspension for a motor vehicle, Fig. 3, not shown, the rubber-sandwich suspension unit (10) forms a pivot for a trailing lower control arm (32). In a telescopic front suspension, Fig. 4, two suspension units 10 are arranged sideby-side to form pivots for respective transversely control arms 40, the outer ends of which are connected to steering knuckles 42. Pivotal links 48 extending longitudinally between the vehicle frame and the control arms 40.
Patent GB-228178-A (GB)
Title: Improvements in wireless systems
IPC: H04B15/00
Filed: 1925-01-22
Abstract: 228,178. Soc. Franþaise Radio-Electrique, (Assignees of Latour, M.). Jan. 22, 1924, [Convention date]. Thermionic amplifiers and detectors. - Where the filament-heating current is taken from an alternating source, the resulting fluctuations in the plate circuit of the amplifying or detecting valve 1, Fig. 1, are compensated across the output transformer 2 by the corresponding fluctuations in the plate circuit of an auxiliary twoelectrode valve 3 which is added for balancing purposes. The two valves may be combined into a single five-electrode valve comprising two grids and two plates, as described in Specification 153,319, or by a four-electrode valve as shown in Fig. 2; or the auxiliary plate in the latter may take the form of a second grid. In an alternative arrangement the valve 3, Fig. 1. is replaced by a balancing three-electrode valve comprising a grid leak and tuned circuits to preserve the necessary symmetry. Reaction may be added, and the output may be tapped off high resistances in the combined plate circuits in place of the transformer shown. Specification 127,318 is referred to.
Patent GB-1088521-A (GB)
Title: Pressure container of prestressed concrete for a nuclear reactor
IPC: G21C13/00
Filed: 1965-01-15
Abstract: 1,088,521. Reactor pressure vessels. DYCKERHOFF & WIDMANN KOMM.-GES. Jan. 15, 1965 [Jan. 15, 1964], No. 2026/65. Heading G6C. In a nuclear reactor pre-stressed concrete pressure vessel, the cylindrical wall is constructed of separate horizontal rings. Each ring is formed of prefabricated sectors held together by external circumferential prostressing cables. The rings are secured together by vertical prestressing rods. After assembly of a ring, an external pressure is applied by an inflatable container, the circumferential cables are stressed and concrete is injected into the spaces between sectors. The means to apply the internal pressure is raised from ring to ring by an hydraulic jack. The circumferential cables are mounted in superimposed layers separated by steel plates.
Patent GB-715706-A (GB)
Title: Improvements in or relating to paper-making machines
IPC: D21F1/50
Filed: 1952-01-25
Abstract: 715,706. Fourdrinier paper-making machines. HEYS, R. C. Jan. 1, 1953 [Jan. 25, 1952], No. 2043/52. Class 96 A suction compartment 19 extends between the couch roll 12 of a Fourdrinier paper-making machine and the line at which the web 11 is couched from the wire-cloth 10 on to a felt 18 with the aid of a suction roll 17. The couch roll 12 may have a suction zone 16 acting on the web 11, a suction zone 31 for exhausting or aiding in exhausting the compartment 19, and a zone 32 supplying air at high speed to clear perforations, of the roll 12, of water. Water may be drained at 30 from the compartment 19, e.g. at 15 to 20 ins. Hg suction. The compartment 19 may have adjustable end-walls, its sides being formed by parts of the surfaces of the couch roll 12, forward drive roll 14, and an intermediate roll 22, which may be substituted by a trough contacting the couch roll 12 and either the roll 14 or the wire-cloth 10. The roll 17 may be substituted by the lowest roll of a suction press contacting the wire-cloth intermediate of the rolls 12 and 14, in which case the slope of the wirecloth between the rolls 12, 14 is adjustable by moving the roll 14.
Patent GB-1268613-A (GB)
Title: Crystal oscillator timepiece
IPC: G04F5/06
Filed: 1970-01-15
Abstract: 1,268,613. Crystal controlled multivibrators. TIMEX CORP. 15 Jan., 1970 [30 Jan., 1969], No. 2116/70 Heading H3T. [Also in Division G3]  A time piece comprises an integrated circuit quartz crystal stabilized multivibrator feeding a drive circuit via a frequency divider circuit. The power source is a battery 10 or alternatively solar cells. In operation transistor 31 conducts and turns ON a transistor 30. As the collector of T30 goes to ground, C39 attempts to drive the base of T31 more negative thus increasing regeneration. When C39 completes charging, the base of T31 goes slightly more positive causing a regenerative action which cuts off T30 and T31. The base of T31 now goes to ground at a rate determined by R34, C39 and R36 until eventually T31 conducts again and the cycle repeats. The resulting short spikes at the collector of T30 cause a crystal 40 to emit a decaying train of oscillations across R33 which cause the multivibrator to synchronize at the fundamental (e.g. 60 KHz) or sub-harmonic of the crystal frequency depending upon the values of R34 and C39. Alternatively the crystal may be across R36. Either C43 or R44 may be adjustable to adjust the output frequency.
Patent GB-101826-A (GB)
Title: A New or Improved Periscope.
Inventor: BAKER GEORGE
IPC: G02B23/08
Filed: 1916-02-14
Abstract: 101,826. Baker, G. Feb. 14, 1916. Periscopes. - A periscope mirror for sliding in pairs on a bayonet comprises a casing having a hinged transverselyslotted cover c which is used, either to shade the mirror or to slide upon the bayonet, and a hinged articulated bracket arm e, f , g also adapted to slide upon the bayonet. The member e is pivoted at d so that the whole arm may be folded flat. The member g may be used to suspend the mirror for shaving &c.
Patent GB-448529-A (GB)
Title: Improvements in or relating to collapsible tents or the like
IPC: E04H15/50
Filed: 1935-01-23
Abstract: 448,529. Tents. REDPATH, W., 68, Ladbroke Grove, London. Jan. 23, 1935, No. 2224. [Class 20 (i)] A collapsable tent or like structure which comprises end and intermediate arched frame members interconnected by a collapsing ridgemember, has the ridge-member adapted to fold in a horizontal plane for collapse. The end and intermediate arches A and B, respectively, are connected by lattice structures G adapted to collapse in a horizontal plane and which are retained in expanded positions by locking bars H. Bars D, D<1> or frames E, E<1> which connect the lower side members of the arched frames are adapted to fold inwardly of the tent structure when collapsed so as to clear the tent covering. These bars or frames are held in extended position by latches F or locking sleeves C<2> . The side covering portions of the tent may be separate from the roof portion and be suspended therefrom, and windows of oiled canvas may be used in the covering.
Patent GB-1048483-A (GB)
Title: Improvements in or relating to multi-stage thermoelectric devices for supplying or absorbing heat
IPC: F25B21/02
Filed: 1964-01-17
Abstract: 1,048,483. Thermo-electric devices. SIEMENS-ELECTROGERATE A.G. Jan. 17, 1964 [Jan. 21, 1963], No. 2257/64. Heading H1K. In a multi-stage Peltier-effect device, in order to counteract the heat loss along the electrical supply conductors, those to the individual stages 1, 2 are interconnected through thermo-electric elements 36, 37.
Patent GB-1224452-A (GB)
Title: Emulsion polymerization process
IPC: C08F2/22
Filed: 1969-01-14
Abstract: 1,224,452. Styrene-diene-shellac copolymers. FIRESTONE TIRE & RUBBER CO. 14 Jan., 1969 [22 Jan., 1968], No. 2267/69. Heading C3P. In a process for copolymerizing solubilized shellac with a conjugated diene and/or a styrene in aqueous emulsion with no added emulsifiers at a pH between 6À5 and 8À3, the shellac is added continuously or in a stepwise fashion to maintain the pH constant to within 0À2 pH point. The process is an improvement in Specification 1,016,947.
Patent GB-863807-A (GB)
Title: Electrical systems for the automatic control of speed
Inventor: TOWNSEND BARRIE ROBERT
IPC: G05B23/02
Filed: 1957-01-22
Abstract: 863,807. Automatic speed control systems. LANCASHIRE DYNAMO ELECTRONIC PRODUCTS Ltd. April 22, 1958 [Jan. 22, 1957], No. 2287/57. Class 38 (4). An electric motor M is supplied from generator G and is adapted to drive a tachometer generator 12 whereby the speed of the motor is regulated by an amplifier 10 and thyratron rectifiers 11 in the field circuit of the generator, the set speed being determined by the adjustment of potentiometer 16. To compensate for changes in the system, due to variations in the speed-voltage ratio of the generator 12, for example, a resistor 31 is adjusted by de-energizing the motor M, releasing clutch 14, and driving the tachometer generator by a synchronous motor 20 at a speed which is accurately maintained by an electromechanical oscillator 22, the potentiometer 16 being set to correspond with the synchronous speed of the motor 20. A servo-amplifier 28 is then connected to the amplifier 10 to control a reversible servomotor 30a and adjust the variable resistor 31 for regulating the voltage applied to the potentiometer 16. The output voltage from the amplifier 10 is opposed by a balancing voltage derived from potentiometer 30 mechanically coupled with the servomotor and the resistor 31 which is adjusted until the resultant voltage applied to the servo amplifier is reduced to zero. The arrangement is such that the speed-setting voltage is substantially equal to the voltage of the tachometer generator when the final state of balance is reached. In a modification, the servomotor adjusts the excitation of the tachometer generator. A detector 32 prevents operation of the servo amplifier 28 until the motor 20 reaches synchronous speed by comparing the frequencies of an A.C. generator 33 and amplifier 24. A starter 25 is provided for the motor 20, which is only connected to the amplifier 24 when the motor has reached its correct speed. A relay system 36 indicates when an accurate balance has been obtained between the voltages derived from the potentiometer 16 and generator 12. Specification 812,401 is referred to.
Patent GB-1042611-A (GB)
Title: Improvements in or relating to gas burners
IPC: F23D14/10
Filed: 1963-01-18
Abstract: 1,042,611. Gas burners. GEO BRAY & CO. Ltd., A WESTERMAN, and D. HARRISON. Jan. 1, 1964 [Jan. 18, 1963], No. 2357/63. Headings F4F and F4T. A gas burner has symmetrically arranged flame ports, each having a diameter of between 0À03 and 0À06 of an inch and being formed in a strip 8, Fig. 1, 2, of heat-resisting metal, each flame port diameter being between 0À8 and 2À0 times the thickness of the strip, and the ports being spaced apart by 2 to 4 times their diameter between their centres. A burner body 5, a mixing tube 4 and injector 3 are carried on a bracket 2, air entering the tube through ports 7. The strip 8 is held in grooves 9 in body 5 and commences in the region 10. The bracket 2 carries injector bodies 14 in which various jets 3 can be inserted, various forms of bodies and jets are given in Figs. 12-21, not shown. The burner is lifted off the body to replace a jet however, the body can be attached to one side of a T-piece, the other being plugged and the stem connected to the gas supply, by removing the plug new jets can be screwed into the body without removing the burner. In Figs. 4-8 not shown, the flame strip extends the whole length of the burner and baffles are used to uniformly distribute the gas/air mixture to the flame ports. Various arrangements of flame ports are given in Figs. 9-11, not shown. The flame strip may be flat, convex or frustoconical. A cross-lighting device 34 for use with several burners comprises a strip of metal with flame ports 35, Fig. 22, and a slot 36, a ribbon of flame being formed at right-angles to the main burner flame to rapidly ignite other burners.