baber/WOPTO huggingface dataset:
Patent GB-1512496-A (GB)
Title: Amplifiers
IPC: H03F1/30
Filed: 1976-07-01
Abstract: 1512496 Transistor amplifiers COMMISSARIAT A L'ENERGIE ATOMIQUE 1 July 1976 [1 July 1975] 27457/76 Heading H3T A method of eliminating the error voltage of an amplifier having two inputs I, II and two outputs, consists of periodically reversing the input and output connections to the amplifier, for example by means of FET's 30, 32, 34, 36 and 50, 52, 54, 56 respectively, and performing an integration after the second reversal. Reversal of both input and output connections has substantially no effect on a signal passing through the amplifier, but an internally produced voltage is periodically reversed by 50-56 only, and may be eliminated by integrating circuit R, C ext . Short-circuiting switches may be added, e.g. FET's 38, 40, etc., in case the internally produced voltage is so large as to saturate the amplifier, these switches being operated at a multiple or sub-multiple of the reversal frequency. The error voltage is thus reset to zero at each short-circuiting instant. Furthermore capacitors C 1 , C 2 , C 3  may be added, so that during shortcircuit they store the internally produced voltages, providing approximate compensation of such voltages during the intervals between short-circuiting. Short-circuiting is timed to occur in an interval between the opening of the input and output switches and the subsequent closing of the switches for the reversed polarity, Fig. 8 (not shown), but in other embodiments the duration of short-circuiting may be slightly shorter or slightly longer than the length of the said interval.
Patent GB-1193474-A (GB)
Title: Improvements in or relating to the Detection of Overheated Axle Boxes
Inventor: PORTER BRIAN
IPC: B61K9/06
Filed: 1967-06-15
Abstract: 1,193,474. Detecting hot bearings. HAWKER SIDDELEY DYNAMICS Ltd. June 11, 1968 [June 15, 1967], No.27635/67. Heading G1A. A hot axle box detector for a railway comprises an indium antimonide photo-conductor and an optical system with a line of sight inclined upwards at an angle of 45 degrees to 55 degrees to the horizontal and in a vertical plane making an angle of 15 degrees to 45 degrees with the track rails. The photo-cell 16 has a narrow rectangular sensitive area and is mounted behind optical stops 18, 19 and an infrared passing filter 20. The cell sensitive area is imaged in a lengthened form on the leading edge of passing axle boxes 15 by a concave mirror 22 and a plane stainless steel mirror 21. Mirror 21 may be adjustably mounted so that it can be set for operation on either side of the track.
Patent GB-431771-A (GB)
Title: Improvements in or relating to coin freed prepayment mechanism for electricity, gas and similar meters
IPC: G07F15/04
Filed: 1933-10-07
Abstract: 431,771. Prepayment mechanism for meters. UNITED GAS INDUSTRIES, Ltd., 51, Lincoln's Inn Fields, ANGOLD, H. A., and CHRISTIAN, A. J., The Meter Works, Rowan Road, Streatham Vale, both in London. Oct. 7, 1933, No. 27687. [Class 27] In meter prepayment mechanism adapted for selective operation by coins of different value, operating mechanism for the commodity control member comprises a plurality of rotary crediting cams, which are caused to take up a particular relative disposition according to the amount of prepayment, in conjunction with mechanism of the type described in Specification 308,401, [Class 27]. As shown, a switch arm c is connected by a link c<4> to a crank-arm d on a shaft d<2> which is rotated clockwise to set the switch in the closed position shown upon initial movement of the coin pocket. The switch is held closed, against the action of a spring c<3> and a spring urged arm f bearing on the crank-pin d<1>, by a pivoted three-armed lever i which engages the crank-arm d, an arm il of the lever bearing against an abutment g<3> on a pivoted arm g which is thereby held in engagement with a pair of coaxial cams k, j in the form of circular discs with segmental cut-away portions. The mechanism is adapted for use with pennies and shillings ; the cam j is rotated directly from the quantity mechanism, whilst the cam k is geared to the cam j so as to rotate at one-twelfth of the speed. For prepayment less than a shilling, the cam j only is turned sufficiently to bring its operative circular portion into engagement with the arm g, whilst for prepayment of a shilling or more control of the arm g is taken over by the slow speed cam k. When prepayment is exhausted, both cams present their cut-away portions to the arm g which turns anti-clockwise, permitting the latch lever i to release the crank-arm d so that the switch opens, the final tripping being performed by the high speed cam j. The arm g is thrust downwardly past the cams during setting by the arm i<1> of the lever i, which is rotated anticlockwise by a pin f<2> on the arm f. The mechanism connecting the shaft d<2> with the coin-holder mechanism may be constructed as described in Specification 426,953. Suitable mechanisms for connecting the quantity mechanism and cams to the coin-holder mechanism are described in Specifications 387,678 and 392,530. Suitable coin-holder mechanisms are described in Specifications 391,452, 393,975, 400,636, and 405,302.
Patent GB-1112295-A (GB)
Title: Improvements relating to the mounting of flush-type indicating instruments
Inventor: RYDER NORMAN
IPC: H02B1/044
Filed: 1964-07-06
Abstract: 1,112,295. Indicating-apparatus. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 1, 1965 [July 6, 1964], No. 27761/64. Heading G1J. [Also in Division E2] A bracket for use in releasably mounting an instrument in an opening in a panel 11 comprises an elongate limb 1 having portions 12 one end for insertion between the casing of the instrument and the adjacent edge of the opening in the panel and the other end 10 for engagement with an abutment surface of the instrument casing, two apertured lugs, 2, 5 directed substantially normal to the limb on the same side thereof with the lug 5 at the end 10 and the lug 2 spaced from the ends, and screw means 13, Fig. 4, extending through said apertures for exerting a thrust between the rear face of the panel and the lug 5. As described the lugs are integral with the limb and the lug 5 extends across the whole width of the limb. In a second embodiment the lug 5 is replaced by a lug identical to the lug 2. In each embodiment the screw means engages in a spring steel nut 14 fitted over the lug 5, and the aperture in the lug 2 acts merely as a guide. In use the bracket is seated in a recess formed in the casing of a flushmounting type indicating instrument after the latter has been inserted in the opening in the panel 11, the abutment surface being provided by the rear wall of the recess.
Patent GB-1349278-A (GB)
Title: Laminated materials and manufacture thereof
IPC: B44C5/04
Filed: 1971-06-14
Abstract: 1349278 Decorative glass fibre surfaced laminates WESTVACO CORP 14 June 1971 [12 June 1970 25 Jan 1971 8 Feb 1971] 27797/71 Heading B5N A decorative laminate comprises a single, protective, clear overlay sheet formed of glass fibres and a layer or combination of two layers which layer or combination is both decorative and shock absorbing, said sheet and layer(s) being bonded by and impregnated with a thermoset polyester resin which resin has been cured under low pressure conditions. Low pressure laminates are defined as being laminates which can be cured by the application of heat at relatively low pressures, usually below 250 p.s.i. In a preferred embodiment a laminate is made from a sheet of glass fibres, a sheet of decorative kraft paper and a rigidity imparting substrate, e.g. flakeboard or plywood. In a second embodiment, a laminate is made from a sheet of glass fibres, a print sheet which may be kraft paper or may be formed, from cellulose, acrylonitrile or polyester fibres and a cushioning sheet of cotton fibres, the consolidated laminate being bonded to a substrate, e.g. plywood, gypsum board, lumber, particle board, hardboard, metal, flakeboard or asbestos board. The resin which may be applied by dipping or coating from solution, preferably so as to locate more resin on the face of the print sheet contacting the overlay than on the other face may be a mixture of an unsaturated polyester resin and an unsaturated monomer polymerizable therewith.
Patent GB-1396553-A (GB)
Title: Apparatus for enhanced development of a latent electrostatic image
IPC: G03G13/08
Filed: 1972-06-14
Abstract: 1396553 Developing DIAGNOSTIC INSTRUMENTS Inc 14 June 1972 [9 July 1971] 27819/72 Heading G2H An electrostatic latent image W on the surface of an electrically insulative substrate 17 which is supported on electrically conductive member 13 is developed by introducing a cloud of charged powder particles between the substrate and an electrically conductive plate 27 and connecting a capacitance 29 between the member 13 and the plate 27 to accept and dissipate the mirror image charge W 2  on the reverse surface of the substrate. The image may be formed by an ionographic method Fig.1 (not shown).
Patent GB-1016614-A (GB)
Title: A synchronous polyphase rotary converter with a single armature
IPC: H02K47/30
Filed: 1963-07-15
Abstract: 1,016,614. Multi-winding machines. INSTYTUT ELEKTROTECHNIKI. July 15, 1963 [July 14, 1962], No. 27891/63. Heading H2A. The single-phase input winding 1 and polyphase output winding 3 of a phase-converter are wound at different depths in the same stator slots; the output winding 2 lying adjacent the machine air gap. The laminated rotor 6 has elongated peripheral slots which carry the excitation winding 3 and adjacent the air gap a damping winding 4 consisting of insulated conductors connected together to form shortchorded coils. Some of these coils are serially connected and each group so formed is shortcircuited by a separate conductor. This construction is described as producing a symmetrical polyphase output over the load range from a single-phase supply. A D.C. machine, connected to a battery, is used to start the converter and to charge the battery when the converter is running.
Patent GB-158701-A (GB)
Title: Improvements relating to electric battery plate pasting machines
IPC: H01M4/20
Filed: 1919-11-11
Abstract: 158,701. White, A. E., (U.S. Light & Heat Corporation). Nov. 11, 1919. Electrodes.-A machine for pasting storage battery electrodes comprises, as shown in Fig. 1, a canvas or fabric-covered leather belt 12 carried by two drums 10, 11 rotatably mounted in the frame of the machine, the drum 11 being adjustable longitudinally by bolts 13. Power is supplied to a pulley 6 which rotates the drum 10 and also a drum 23, through gearing 15<a>, 15<b> and, a chain 15. The drum 23 carries a belt 27, which passes round a second drum 24 mounted so as to yield in the vertical direction in bearings 25. Rollers 32, 34, yieldable in the vertical direction and which may be spring-pressed as shown at 36, are rotated by a shaft 20 having geared connection with the shaft 14<a> of the drum 23. Fixed boards 28, 29 are provided in contact with the belts 27, 12, and a roller 44 mounted in a spring-controlled lever 42 is provided to press the belt 12 upwards against the belt 27 and board 28. The grids to be pasted are placed on the belt 12 at the righthand end, paste being applied to the roller 34. The pasted grids as they leave the roller 34 pass under the roller 32, which further presses the paste into the grids. The belts 27, 12 and the boards 28, 29 where they overlap serve to finish off the surfaces of the grids. Any paste adhering to the belt 27 is removed by a roller 38 and scraper 39. In a modification, the pasting and finishing parts of the machine are constructed as separate units, the pasting-machine being shown in Fig. 6. This comprises two drums 1, 2 carrying an endless belt 3. Power is .transmitted to a shaft 24 which by means of gearing rotates the drums 1, 2 and a bent shaft 36 having universal joints 35, 37 and provided with worms 39, 40. The worm 39 rotates a roller 4 carrying an endless belt 6 which passes over a second roller 5. The worm 40 rotates a roller 8, all three rollers being vertically yieldable to allow for inequalities in the thickness of the plates to be pasted. Paste is applied to the plates which are placed on the left-hand end of the belt 2. The paste is roughly packed into the plates as they pass under the roller 8 and is then packed firmly by the roller 4 and belt 6. Heaters 9. 10 serving also as abutments are provided for drying the surfaces of the grids and belt 2, the temperature of the heaters being maintained electrically or by steam-pipes. The finishing-machine comprises a rotary band for conveying the plates and a supplementary band above for engaging the upper facts of the plates. The frame carrying the drums of the supplementary band is pivoted at one end to the main frame to allow one of the drums to bear heavily upon the plates as they pass between the two bands. Heaters are provided for both bands.
Patent GB-976513-A (GB)
Title: Alicyclic carboxylic acids and their salts and esters
IPC: C11B9/00
Filed: 1961-08-01
Abstract: The invention comprises the two isomeric cycloundec-1-ene-1-carboxylic acids of m.pts 138-9 DEG C. and 116-7 DEG C. respectively, salts and esters thereof, and their preparation by reacting a 2, 12-dihalocyclododecanone or a 2, 2-dihalocyclododecanone with an alkali metal compound having an alkaline reaction in an organic or aqueous organic solvent medium and, where a salt or an ester is obtained, if desired transforming the salt or the ester into the free acid or transesterifying the ester into another ester, and if desired converting an acid thus obtained into an ester, the said transformation, transesterification and conversion reaction, being effected by any known method for conducting such reactions, or, for the preparation of the isomer of m.pt 116-7 DEG C. only, by reacting a 2, 12- dihalo compound with a suspension of an alkali metal alcoholate in a non-polar liquid, removing the non-polar liquid, saponifying the ester and liberating the free acid.  2, 2-Dibromo- and -dichloro-cyclododecanones are prepared by reacting cyclodecanone with bromine or chlorine.  2, 2-Dibromocyclododecanone is prepared by reacting solid carbon dioxide with the sodio derivative of cyclododecanone to give the ketoacid, 2-oxo-cyclododecane carboxylic acid, brominating this to give 1-bromo-2-oxo-cyclododecanone carboxylic acid and heating the sodium salt of this acid with bromine.  Pharmaceutical compositions having choleretic action comprise the acids and salts of the invention together with pharmaceutically acceptable carriers, and may be formulated in any suitable pharmaceutical form for parenteral, enteral or rectal administration, e.g. tablets or solutions for injection.
Patent GB-940975-A (GB)
Title: A device for tightening and loosening barrel bungs or the like
Inventor: HARGREAVES GEORGE
IPC: B67B7/42
Filed: 1961-08-02
Abstract: 940,975. Screwing up and unscrewing bolts. WRIGHT HARGREAVES ENGINEERING CO. Ltd. July 30, 1962 [Aug. 2, 1961], No. 28001/61. Heading B3N. [Also in Division B8] A bung 13 is unscrewed from, or tightened on to, a metal cask 16 by a member 10 rotatable with a shaft 11 and slidable axially relative thereto, and provided with notches 12 which engage lugs 14 on the bung. A flanged disc 22 is similarly carried on the shaft and, together with the member 10, is urged by a spring 23 towards a dome-headed stop 21 on the outer end of the shaft. The latter is secured to the spindle of a nut runner, and the assembly is rotated by a pneumatic motor 19 mounted on the piston-rod 20 of a pneumatic ram whereby the assembly is raised and lowered. On lowering the assembly the flanged disc encircles the bung and, together with the stop 21 correctly locates the member 10 which snaps into engagement with the lugs 14. During downward movement a collar 24 actuates a valve 25 to start the pneumatic motor drive; the motor is stopped when the assembly is raised. Alternatively the motor control valve 25 may be operated by a member 26 which moves upwardly on the shaft with the member 10 as the bung is unscrewed.
Patent GB-1017488-A (GB)
Title: Multiple-part internal combustion engine piston
IPC: F02F3/00
Filed: 1964-07-03
Abstract: 1,017,488. Pistons. H. MAHLE, and E. MAHLE, [trading as MAHLE KOMM-GES]. July 8, 1964 [Aug. 14, 1963], No. 28129/64. Heading F2T. An I.C. engine piston comprises an end part 2 connected to a main body 1 by means of bolts 3 each provided with heads 31 and 32 respectively engaging a thrust bush 4 retained in an axial blind hole 11 in the body 1 and removable thrust elements 6 bearing against a shoulder 53 in an externally screw-threaded sleeve 5 which is axially slidable and is prevented from rotating in a recess 21 in the end part 2 and which has a bore with a diameter larger than that of the bolt head 32, the recess being closed by a nut 7 which is screw-threaded on the sleeve 5 and has a shoulder bearing against a step in the recess. The body 1 may be of cast steel and the part 2 of light metal. The thrust elements 6 may consist of half rings or, as shown, of balls. The sleeve 5 is biased towards the end face of the piston by a spring 52 and is held against rotation by projections 51 engaging in recesses 22 in the part 2. To disconnect the part 2, the nuts 7 are unscrewed and each sleeve is depressed against the spring 52 allowing the thrust elements 6 to be dislodged whereupon the sleeve and the part 2 can be removed.
Patent GB-430069-A (GB)
Title: Process for the destructive hydrogenation of carbonaceous materials
IPC: C10G1/06
Filed: 1934-10-02
Abstract: <PICT:0430069/III/1> Relates to a destructive hydrogenation process in which a separator is arranged behind the reaction vessel for the separation of vapours and gases from liquid and solid components, and consists in flushing the walls of the separator with a liquid medium to prevent accumulation on the walls of the separator. The flushing liquid is distributed uniformly over the walls and other internal surfaces and may be produced by cooling the walls which are shaped as simply as possible.  As shown, the mixture of products from the reaction vessel passes through a pipe 1 into a separator 2 the upper portion of which is surrounded by a cooling-coil 4 through which a cooling medium, e.g. hydrogen, flows at such a temperature as to form a thin film of liquid on the walls.  Liquid is removed from the funnel-shaped lower end through a nozzle 7 and may be subjected to a further destructive hydrogenation.  The liquid in the part 3 may be cooled and stirred by circulation a portion or may be cooled by a circulating cooling medium.  British Specifications 216,150, 253,499, 317,996, and 321,473, [all in Class 32], and U.S.A. Specification 1,843,158 are referred to.
Patent GB-937378-A (GB)
Title: Production of phenylethylbenzoic acid compounds
IPC: C07C51/377
Filed: 1960-08-15
Abstract: Phenylethylbenzoic acid compounds of the formula: <FORM:0937378/IV(a)/1> where each of R and R1 is a hydrogen atom or an alkyl, alkoxy, aryl or aralkyl radical and Y is a hydrogen atom or a cation providing the phenylethylbenzoic acid compound as a salt, are obtained by contacting a hydroxyphenyl ethyl benzoic acid compound of the formula:  <FORM:0937378/IV(a)/2> where R, R1 and Y are as above, with hydrogen in the presence of palladium at a pH greater than about 5.  Alternatively precursors having the formulae: <FORM:0937378/IV(a)/3> may be employed as starting compounds.  The keto benzoic acid compound may be obtained by saponifying a benzal-phthalide of the formula:  <FORM:0937378/IV(a)/4> Alternatively a 3-benzylphalide may be hydrolysed to provide the hydroxyphenylethyl benzoic acid compound.
Patent GB-983015-A (GB)
Title: Fastener device and means of securing it in an aperture or recess in a support
Inventor: PEARSON ARTHUR STANLEY
IPC: F16B21/07
Filed: 1962-07-23
Abstract: 983,015. Stud and socket fastenings. CARR FASTENER CO. Ltd. May 9, 1963 [July 23, 1962], No. 28299/62. Heading E2B. [Also in Division F2] A fastener device for assembly in an aperture comprises a fastener part 2, Fig. 1, and an attaching part 7, Fig. 2, each of synthetic plastics, the fastener part having an outwardly tapered portion 4 to co-operate with resilient fingers 10 on the attaching part so as to spread them when the latter is forced over the fastener part in a recess, the fingers thus embedding themselves in the wall of the recess (as shown in Fig. 5). Any force tending to extract the fastener forces the securing fingers more firmly home. A flange 8 limits the inward movement of the part 7. A bulbous end on the fastener part engages spring fingers 15 on a second fastener part 12 secured by a similar part 7. The fasteners may secure a door of a cabinet.
Patent GB-962653-A (GB)
Title: Improvements in or relating to regulator circuits for alternating currents
IPC: G05F1/455
Filed: 1960-08-16
Abstract: 962, 653. Automatic voltage and current controL INTRON INTERNATIONAL Inc. Aug. 16, 1960 [Aug. 19, 1959], No. 28364/60. Heading G3R. [Also in Division H2] An automatic control system for controlling the flow of alternating current in a load; e.g. a motor 206 in Fig. 1 or an oscilloscope 306 in Fig. 2 comprises a rectifier bridge 201-204 or 301-304 and an electronic switch having a thyratron type characteristic connected across one diagonal of the bridge, the electronic switch being controlled whereby the current in the load is controlled. In Fig. 1 the electronic switch is shown as a controlled rectifier 205 to which is applied an adjustable bias from a variable resistor 222 and a variable feedback from a current transformer 207 so as to stabilize the current taken by the motor 206. In Fig. 2 the electronic switch is shown as a gas filled thyratron 305, the feed back in this case being derived from a transformer 307 connected to sense the volt drop across the oscilloscope 306.
Patent GB-1388092-A (GB)
Title: Inking device
IPC: B41F31/16
Filed: 1973-06-15
Abstract: 1388092 Ink apparatus JOH ENSCEDE EN ZONEN GRAFISCHE INRICHTING NV 15 June 1973 [16 June 1972] 28495/73 Heading B6C Printing ink travels from duct 2 by way of partially-immersed roller 3, cam-actuated messenger roller 10a and endless belt 14a to forme roller 20a. The belt makes a 90 degrees twist and the axis of the forme roller is vertical. Preferably two messenger rollers 10a, 10b co-operate with the roller 3, and two belts 14a, 14b feed ink to two forme rollers 20a, 20b. The belts may be of a plastics material.
Patent GB-1504768-A (GB)
Title: Stand for supporting objects above one another
IPC: A47B96/06
Filed: 1975-07-07
Abstract: 1504768 Stands SNIJDERS METAALWARENFABRIEK BV 7 July 1975 28530/75 Heading A4H A stand for supporting objects, such as drawers or trays 9, 10, 11, above one another has laterally spaced opposed pairs of object supports 4 that are laterally displacable outwardly from a supporting position out of the path of movement of an object being inserted through an open front of the stand, the supports 4 having front bevelled edges 8 that are contacted by said object on insertion to cause said displacement. Each support members 4 is pivoted about an axis 6 parallel to the direction of object insertions and returns to its supporting position under gravity. Stops limiting pivoting in both directions are provided. In a modification Fig. 6, (not shown) the supports are slidably displacable in an upwardly inclined or a horizontal direction and return under gravity or springs.
Patent GB-1477812-A (GB)
Title: Stab connector for vertical bus bar plug-on unit
IPC: H02G5/08
Filed: 1975-07-08
Abstract: 1477812 Copper alloy SQUARE D CO 8 July 1975 [22 July 1974] 28635/75 Heading C7A [Also in Division H2]  An alloy composition for use in contact jaws for bus-bars, consists of 97À5% Cu, 2À35% Fe, 0À12% Zn and 0À03% Pt.