baber/WOPTO huggingface dataset:
Patent GB-1200518-A (GB)
Title: An electromechanical oscillator for timing driving pulses to a pulse-type synchronous motor
IPC: G04C3/06
Filed: 1968-05-06
Abstract: 1,200,518. Control of A.C. motors. GENERAL ELECTRIC CO. 6 May, 1968 [4 May, 1967], No. 21304/68. Heading H2J. [Also in Division H3] The field coils 34, 36 of a synchronous clock motor are supplied with pulses from a battery 26 under the control of an electromechanical oscillator having pick-up coil 10 and drive coil 12 associated with a permanent magnet 76. Transistor 14 is self-biased by resistor 18 to near saturation, and, as magnet 76 oscillates A.C. is induced in coil 10 whereby the transistor 14 is driven alternately toward and way from saturation. During a period of saturation, maximum current passes through coil 12, for moving the magnet 76, and transistor 30 is in its high-impedance state so that the field coils 34, 36, are de-energized. When the magnet 76 reaches the limit of its oscillation and begins to return, a current of opposite polarity is induced in coil 10 for driving the transistor 14 away from saturation. Transistor 30 is switched into its low-impedance state and a pulse of battery current is applied to the field coils. The cyclic action of the transistor 30 is thus established by the frequency of the electromechanical oscillator. The oscillator comprises a flat spring wire torsion member 70 supported between clamping bars 72, 74, and carrying the permanent magnet 76. The latter extends into an opening in a coil form 80 upon which are wound the coils 10 and 12. The member 70 oscillates at a natural frequency so that magnet 76 sets up an alternating field in the coil 10. The clock casing houses the motor, the field coils of which are mounted on a laminated stator member 38 terminating in sections 40, 42, forming polepieces adjacent a permanent magnet rotor. The housing also contains a gear train for driving the clock-hands, the battery, and the oscillator, Fig. 2 (not shown).
Patent GB-1131715-A (GB)
Title: Marine platforms
Inventor: FEILDEN GEOFFREY BERTRAM ROBER
IPC: E02B17/08
Filed: 1965-05-20
Abstract: 1,131,715. Offshore platform. ASHMORE, BENSON, PEASE & CO. Ltd. 19 Aug., 1966 [20 May, 1965], No. 21364765. Heading E1H. A marine platform 10 having legs or sets of legs such as tubular leg 12 has in each leg or at least one leg of each set a series of aligned openings formed by aligned tubes 13 secured at spaced intervals across diameters of the leg and a pin 14 is received in a tube 13 of each leg so that the legs may be moved relative to the platform by the piston and cylinder assembly 16 pivotally secured to the platform. Sprag 23 holds leg  _ 12 stationary relative to the platform when required. In another embodiment the series of openings may be formed by concave pressings secured in holes in the wall of the leg.
Patent GB-864256-A (GB)
Title: Improvements in lamp fittings
IPC: B60Q3/02
Filed: 1956-07-10
Abstract: 864,256. Mounting lamps on internal reflectors of vehicles. RUCKERT, E. W. July 10, 1957 [July 10, 1956], No. 21394/56. Class 75(3). An electric lamp fitting for use with the internal reflector of a motor vehicle comprises a hood fitted with an electric lamp holder and with a clip to engage the edges of the reflector so as to hold the hood with the mouth directed downwards towards and forwards of the reflecting face of the reflector. In the form shown, the hood 1 of inverted trough form is provided with clips 2 to hold an electric lamp 4 of tube form and is closed by a cover plate 7 having an aperture 8 for transmission of light. The hood is secured by nuts 9 to a pair of slotted strips 12 of L-shape, on limb sliding in guides in the rim of the hood and the other limb carrying a flat coil spring 16 extending to a U-shaped clip engaging the lower edge of the reflector R.
Patent GB-753493-A (GB)
Title: An improved scythe
IPC: A01D1/02
Filed: 1953-08-01
Abstract: 753,493. Scythes. WALTON A. R. PELLEW-, and BARRY, R. M. D., [trading as GENERAL & OVERSEAS TRADERS]. Nov. 1, 1954 [Aug. 1, 1953], No. 21398/53. Class 6 (3). A scythe blade 10 is adjustably mounted relative to a snathe by means of a shank 13 which fits in a slot 17 of a boss 15 provided with a serrated face 16 which co-operates with a similar face 21 on a boss 19 integral with a bar 18 which is attached to the snathe. The blade is secured relative to the snathe by means of a bolt 22. In a modification, the boss 19 and bar 18 are made in separate parts. The bolt 22 may be formed integrally with one of the bosses 15 or 19.
Patent GB-614608-A (GB)
Title: Improvements in steam generators
IPC: F22B1/30
Filed: 1946-07-18
Abstract: 614,608. Steam boilers without internal flues; feedwater supply systems. STEEN, C. A. July 18, 1946, No. 21554. [Class 123 (ii) ] In a low-pressure steam boiler 1 which is provided with electric, &c. heating elements 4 located below the normal water level in the boiler and in which the feed water supply pipe 7 thereto is in communication, by an ascending pipe 8, with an expansion vessel 9 having a vent 10 to atmosphere, the said vessel 9 serving to relieve excess pressure within the boiler and simultaneously reduce the heating effect of the elements by exposing the latter to a lesser extent, the feedwater supply is controlled by a pair of automatic valves 19, 20 disposed in series in the water main 12. The valve 20 is actuated by a float located in a chamber 11 which is in communication respectively with the supply pipe 7 and steam space of the boiler by pipes 13, 14, and the valve 19 by a rod 17 coupled to a float 15 in the vessel 9, or in an enlargement in the ascending pipe 8, the valve 20 opening when the level in the boiler falls below the normal and the valve 19 closing when a predetermined level in the vessel 9, or pipe 8, is reached.
Patent GB-577547-A (GB)
Title: Improvements in joists, beams, girders and the like
IPC: E04C3/04
Filed: 1943-12-24
Abstract: 577,547. Sheet metal beams &c. POLDEN, S. G., and AYLAND, L. F. Dec. 24, 1943, No. 21619. [Class 20 (ii)] A joist, beam, girder &c. is composed of two angle or channel &c. sheet metal sections secured together back to back so as to permit nails &c. for securing members to the girder &c. to be driven between the mutually abutting parts of the sections so as to be gripped thereby. The joist &c. may consist of two channel sections 10, Fig. 2, secured at the mid-line of their depth by spot-welding or rivets &c. 11. Apertures 15 are provided for the passage of gas or other service pipes. The channel sections have rounded corners to provide converging guiding surfaces 14 for the nails securing boarding, &c. to the joists. Roof trusses may be built up by securing two T-sections 16, Fig. 3, constructed as above described, to each other and to an I-section 10, the webs of one T- bar engaging between the angle sections composing the web of the other T-bar and being secured thereto by a bolt &c. 19, whilst the webs of both T-bars engage between and are secured as by bolts 18 to the channel sections composing the web of the member 10. The sections described in the Specification include beams &c. in which either or both of the channel-sections composing the beam has or have one flange extended downwardly parallel to the web.
Patent GB-1044653-A (GB)
Title: Improvements in or relating to audience reaction measuring systems
IPC: G09B5/00
Filed: 1963-03-11
Abstract: 1,044,653. Electric selective signalling. SCREEN GEMS Inc. March 11, 1963 [March 20, 1962], No. 21675/66. Divided out of 1,044,651. Heading G4H. A system for measuring the response of an audience comprises a plurality of selector means distributable to individual members of the audience and each arranged to provide an electrical signal representative of an individual's reaction, and means for time division multiplexing such signals into a data output channel. The detailed description is equivalent to part of that in Specification 1,044,651 which is referred to.
Patent GB-1271993-A (GB)
Title: Railway-track tamping machine
Inventor: PLASSER FRANZ
IPC: E01B27/17
Filed: 1969-04-29
Abstract: 1,271,993. Railway track packing machine. F. PLASSER. 29 April, 1969 [29 April, 1968], No. 21696/69. Heading E1G. [Also in Division F2] In a track packing machine wherein a group of pivotal tamping tools 6 are vibrated, e.g. by an eccentric drive 24-25 - and also squeezed together - e.g. by hydraulic actuators as in the tamping head of Specification 1,268,704, the tools 6 are pivoted in bearings 19 enclosed in a common casing 16 which includes a lubricants sump for a common lubricating system for the tamping head. The machine shown has two twin tamping heads 5' having a common lubricant supply 7-8. In modifications, Figs. 4, 6 (not shown) the casing also encloses the actuators and vibratory drive linkwork. The machine may be provided with track levelling means and track aligning means. The tool heads 18 may be detachable the casing may be in three parts a central part aligned with the rail and one part attachable to each side of the central part. The Specification discloses the use of baffle lubricant distributors on the casing.
Patent GB-296881-A (GB)
Title: Improvements in or relating to gramophone cabinets
IPC: E05F17/00
Filed: 1927-08-18
Abstract: 296,881. Hibbard, C. G. Aug. 18, 1927. Cases with internal horns.-A pair of sliding doors or shutters covering the outlet of the amplifier of a cabinet gramophone are connected respectively to the upper and lower runs of an endless cord actuated by a pivoted lever so as to open and close the doors simultaneously. The doors a, a<1> slide in grooves in the cabinet a<2> and are reepectivvely connected at d and e to an endless cord b which can be moved by a pivoted lever f to regulate the opening.
Patent GB-1529983-A (GB)
Title: Electric lamps for vehicles
IPC: F21V19/00
Filed: 1977-08-19
Abstract: 1529983 Lamp holders VEGA AUTO PRODUCTS Ltd 19 Aug 1977 [26 May 1976] 21756/76 Heading H2E [Also in Division F4] A vehicle lamp comprises a light source holder 6 of insulating material secured to a printed circuit board 8 having a hole through which the cap 4 of the source can project, the hole having a peripheral metal reinforcing annulus 11 shaped to receive the locating pins 7 of the cap. The source is held in position by a spring contact 13. The lamp may be modified to receive a source with a screw-threaded cap.
Patent GB-907821-A (GB)
Title: Regular polymers of unsaturated esters and acids having conjugated double bonds
IPC: C08F236/04
Filed: 1961-04-10
Abstract: Stereoregular homopolymers of esters and acids containing at least two double unsaturated conjugated bonds, and having the general formula R1-CH=CH-CH=CH-COOR11 where R1 and R11 represent hydrogen, an alkyl, cycloalkyl, aryl, or aralkyl group which may be substituted are made by polymerizing a compound of the above formula at a temperature of from +100 DEG  to -120 DEG C. in the presence of a compound of a metal of Group I of the Periodic Table.  The polymers may have a 1,4-enchainment in the main chain and typically asymmetric carbon atoms.  The polymerization may be carried out in the presence of a solvent such as an aliphatic or aromatic hydrocarbon or an organic Lewis base-type compound, or mixtures thereof.  Specified compounds of the above formula are the methyl, ethyl, propyl, isopropyl, butyl, isobutyl, amyl, neopentyl, lauryl, ketyl, cyclohexyl, and benzyl esters of 1-carboxy-butadiene, 4-methyl-1-carboxy-butadiene (sorbic acid), 4-isopropyl-1-carboxy - butadiene, 4 - cyclohexyl - 1 - carboxybutadiene, 4-phenyl-1-carboxy-butadiene, and 4-tollyl-1-carboxy-butadiene.  The Lewis base-type compound may be diethyl ether, diethylene glycol diethyl ether, tetrahydrofuran, anisole, pyridine, tributylamine, or triphenyl phosphine.  The catalyst may be a lithium alkyl, e.g. lithium butyl, or a lithium aryl, amide, or ketyl or a sodium alkyl, or a complex of these lithium or sodium compounds with a Lewis base compound.  The polymers are stated to be tri-tactic and are named erithro- or threo-di-isotrans tactic polymers.  The polyester polymers may be saponified in an alkaline medium to give the polyacids. Saponified cross-linked polymers may be used as cationic ion-exchanger resins.  The polymers may be cross-linked by free radical catalysts alone, or in the presence of a polymerizable monomer, or with polyalcohols or the corresponding oxides (e.g. ethylene glycol and ethylene oxide), in the presence of esterification catalysts.  The polymers may be made into fibres, or films, or used as an adhesive, or employed in the manufacture of paints.
Patent GB-904501-A (GB)
Title: Improved high-pressure apparatus
Inventor: PLATEN BALTZAR CARL VON
IPC: B01J3/06
Filed: 1960-06-22
Abstract: A high pressure apparatus comprises a fluid-tight pressure-resisting casing and a fluid-tight pressure-transmitting casing situated within said pressure-resisting casing so as to define an inner and an outer space, and is characterized in that said pressure-resisting casing comprises a plurality of blocks of decreasing cross-sectional area in a direction from the outer to the inner space, said <PICT:0904501/III/1> <PICT:0904501/III/2> <PICT:0904501/III/3> blocks being separated by gaps lying in said direction.  As shown in Fig. 1, an inner space 24 is bounded by six frusto-conical blocks each in two parts such as 26 and 27, (in another embodiment the blocks are in three such parts) said parts being held together by bolts 28, said blocks being separated by interstices 25 and the assembly of blocks being held together by nuts and bolts 36, 38 co-operating with grooves 37.  The assembly is supported by a block 40 on a base 23 forming one side of the cylindrical outer casing, a bolt 31 securing these parts and serving as an electrical conductor.  The inner casing is sealed by means of joined sheets 43, 44, e.g. of copper, synthetic resin or rubber, and the outer casing by means of sheets 46, 47. Details of the sealing of the interstices 25 and the corners 35, 67 are provided.  The interstices are in communication with a source of cooling medium through pipe lines 51, 52 and channels in socket 56 and blocks 40, 29.  Pressure fluid is supplied through valve 48 and channel 49.  In the apparatus shown in Figs. 5 and 6, the inner space 83 is also cylindrical and the blocks 85 forming the pressure transmitting casing are sectors of a cylindrical annulus. A tube 84 seals the inner boundary of the high pressure space. Pressure fluid is supplied through tube 90 to the outer space 87.  The material to be subjected to high pressure may be embedded in pyrophyllite, talcum, indium, bismuth, silver chloride or boron nitride or may be placed in a suitably sealed container. Specification 788,891 is referred to.
Patent GB-994779-A (GB)
Title: Logic circuit
IPC: H03K19/173
Filed: 1961-06-16
Abstract: 994,779. Tunnel diode circuits. DIRECTOR OF KOGYOGIJUTSUIW. June 16, 1961 [June 18, 1960], No. 21856/61. Heading H3T. A dynamic logic circuit comprises a tunnel diode in series with inductance, resistance and D.C. supply and biased to a stable state so as to oscillate when an appropriate input is received and to cease oscillation when the input is removed or when an inhibiting signal is received. Fig. 14 shows a dynamic bi-stable circuit in which tunnel diode D is normally biased to point Q (Fig. 15) but becomes oscillatory, generating positive pulses when positive-going pulses from a similar circuit F 1  are received at Lo. The oscillation continues until the pulses from F 1  are terminated by cessation of input X. The pulses generated by tunnel diode D may have different frequency from those received from F 1  and are coupled by L 1  to a further tunnel diode circuit F 2 . Tunnel diode D is made insensitive to pulses from F 2  by arranging mutual inductance N to be less than M and by biasing the tunnel diode in F 2  to point P (Fig. 15). The circuit thus transmits signals only in the direction F 1  to F 2  and not vice versa. Resistors or capacitors may replace the coupling transformers. Fig. 5 shows a circuit in which capacitor C 1  permits oscillation to be initiated by a positive pulse V o  (Fig. 6) and terminated by a negative pulse. In Fig. 34, tunnel diode D 4  is made oscillatory by an input at 34, 34<SP>1</SP>, remaining oscillatory until tunnel diode D 3  is made oscillatory by an erasing signal fed to terminals 35, 35<SP>1</SP>, the change in D.C. level across R 3  being filtered by r 3 , r 4  and C 3  and used to terminate the oscillation of D 4 . Fig. 18 shows a NOT circuit in which tunnel diode D 2  is normally oscillating, giving an output V 1 , oscillation ceasing when an input V 0  is received which causes tunnel diode D 1  to oscillate, the change in D.C. level at A being filtered by r 1 , r 2 , C 2  and used to inhibit the oscillation at D 2 . Exclusive OR circuit (Fig. 30) uses four of the directional circuits shown in Fig. 14 fed respectively with x 1 , # x 1 , x 2 , # x 2  (where # indicates NOT) and a pair of NOT circuits shown in Fig. 18, the combined output of which is fed to a further tunnel diode circuit giving an output only if one but not both inputs x 1 , x 2  is present. Other logic circuits.-Reference is made to the use of the following logical codes in binary systems:- The Specification utilizes complex three value logical algebra using hypercomplex numbers to describe the application of the invention to AND, OR, NOT circuits.
Patent GB-886661-A (GB)
Title: Improvements in or relating to machines for mounting electrical components on supporting boards
Inventor: HINCHCLIFFE DENIS
IPC: H05K13/04
Filed: 1958-07-08
Abstract: 886,661. Programmed electric systems. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. July 8, 1959 [July 8, 1958], No. 21874/58. Drawings to Specification. Class 38 (6). [Also in Groups XXII and XXX] In a machine for automatically assembling wire-ended electrical components on to an insulating board, by drilling a pair of holes of selected spacing in a selected position on the board and then inserting the next component fed from a magazine, a punched tape performs three separate functions. It controls the X and Y axis movements of the board relative to the fixed assembly point, it controls the spacing of the pair of drills, and it enables selected portions of the assembly sequence to be omitted. Standard 5-hole tape is used. Four holes in each of the first four rows control the X and Y movements in binary decimal code, the fifth row of the address controls the drill spacing, and the remaining fifth holes are for forward/reverse control of the X and Y movements, rotation of the work-table, omission of the drilling, and omission of the component insertion. The tape is read and the information stored on relays. The board is carried by an upper table movable along one axis, in turn supported on a lower table movable at right angles (none of these features are shown). The tables carry X and Y digitizers from which their position is read. The outputs of the digitizers are said to co-operate with the contacts of the storage relays in such a manner that when the tables reach the required position series circuits are completed which energize solenoids to lock the leadscrews by which the tables are moved. The drill spacing is controlled by the storage relays marking selected contacts on a four-bank stepping switch, which homes on to the marked contacts. In so doing it rotates a cam which determines the stroke of a pneumatic ram which moves one drill relative to the other. The sequence control is effected by limit switches which on the completion of one event initiate the next. Specifications 722,836, 845,539 and 886,660 are referred to.
Patent GB-294669-A (GB)
Title: Improvements in or relating to braiding machines
IPC: D04C3/00
Filed: 1927-08-27
Abstract: 294,669. Industries of America, Inc., (Assignees of Robinson, H G.). Sept. 24, 1926, [Convention date]. Divided on 277,947. Drawings to Specification. Braiding-machines.-In a braiding-machine, such as that described in Specification 277,947, the driving discs are recessed peripherally to receive flanges of the bobbin carriers, the recesses being of such shape as to receive the two opposite surfaces and the peripheral edge of a flange. The flanges are preferably held in the recesses, and the machine operated as a whole, in the manner described in the companion Specification referred to above.
Patent GB-531703-A (GB)
Title: An improved curtain support
IPC: A47H1/06
Filed: 1939-07-29
Abstract: 531,703. Curtain rails. AKTIEBOLAGET EXPORTLIST. July 29, 1939, Nos. 22062 and 22063. Convention dates, Sept. 3. 1938 and Feb. 11, 1939. [Class 52 (v)] A curtain rail comprises a wooden board 1 having longitudinal, preferably circular, grooves 2 cut therein, slots 3 being formed on the lower surface. The runners comprise similarly shaped wooden sliders 4 provided with eyes 5 for engaging the curtain. The ends of the grooves 2 may be closed by a hinged rod 7. The ends of the board may have pivoted extensions 10 in which grooves 11 prolonging the grooves 2 are curved to the edge of the board adjacent to the wall. The ends of these grooves 11 may be closed by staples 12.
Patent GB-771735-A (GB)
Title: Improvements in level and inclination indicators
IPC: G01C9/26
Filed: 1955-07-30
Abstract: 771,735. Levels. CLARKE, G. W. July 30, 1955, No. 22091/55. Class 97(2) A spirit level A is mounted diametrically in a sleeve B rotatable in bearings in a parallel sided stock D and an index mark F on one end of the sleeve co - operates with a scale G while a releasable catch O engages one of a series of grooves in the periphery of the sleeve to hold the index mark in register with a desired one of the scale marks. The scale may be formed in a flange E at one end of a member in which are formed the bearings for the sleeve B. The flange is secured to the stock by screws H engaging slots J.
Patent GB-531765-A (GB)
Title: Scanning-wave generator synchronizing system
IPC: H04N5/12
Filed: 1939-07-29
Abstract: 531,765. Television scanning wave generator. HAZELTINE CORPORATION. July 29, 1939, No. 22092. Convention date, Aug. 26, 1938. [Class 40 (v)] A television scanning system includes an oscillation generator synchronized by signal pulses so arranged that the generator is synchronized at the initiation of each trace-scanning period. In the apparatus shown, the television signal received by the aerial system 10, 11, Fig. 1, is passed through and to the several usual devices 12, 13, 14, 15, 16, 18. The synchronizing pulses f, Fig. 2, from the device 18 are injected into the oscillating. circuit of a valve 26 thereby producing pulses p controlling the valve 25, which in turn produces the periodic discharge of the condenser 21, periodically recharged through a pentode valve 22 or equivalent resistance. The valve system 25, 27 is so designed that the pulses p initiated by the leading edges of the synchronizing pulses f are independent of any irregularity in the width of these pulses and of a constant width corresponding to the retrace period. The saw-tooth pulse C derived from the condenser 21 and fed to the image reproducing device 15 has the usual apex S1 at the end of the trace period and in addition has also a sharp angle S2 ensuring accurate synchronization at the initiation of each trace period. Reference has been directed by the Comptroller to Specification 442,740.