baber/WOPTO huggingface dataset:
Patent GB-534597-A (GB)
IPC: G03B27/62
Abstract: 534,597. Photographic projection printing apparatus. KODAK, Ltd. March 21, 1940, No. 5288. Convention date, June 23, 1939. [Class 98 (i)] A photographic projection printing apparatus includes a film gate comprising a pair of hinged apertured members which clamp the film substantially in a plane and are removably carried on an apertured support means for positioning the gate on the support to bring the apertures in it into register with the aperture in the support, and means on the support for holding the gate closed. As shown, the film gate or holder comprises a lower apertured plate 17 and an upper apertured plate 20, the latter engaging loosely over studs 22 secured to the former and being urged by springs 24 into engagement with it. Pressure on the right-hand end of the plate 20 causes it to pivot slightly about the studs 22 so that the film strip 28 may be inserted between it and the plate 17. Fixed pins 25 and pins 31 carried by leaf springs 33 engage the edges of the film to position it, the pins 31 being depressed by the film as it passes over them during insertion. The plate 17 slides on a base member 40 having upturned edges 53 forming guide rails, lugs on the plate engaging shoulders on these rails to position the gate correctly in printing position over an aperture 42 in the base member 40. In this position, a stud 63 on the upper plate 20 is engaged by a spring finger 62 extending from a plate 60 carried by a spacer member secured to a rearward extension of the base member 40, the finger pressing the plate 20 down to clamp the film. The base member is secured to a bar 43 pivoted at 44 to the table of the enlarger and having at the other end a pivoted catch 46 which engages an eccentric cam (not shown) rotatably mounted on the table. By turning the cam the bar is swung about the pivot 44 and the base member is adjusted so that the aperture 42 is brought into alignment with the light opening in the table, and by releasing a thumbscrew 49 holding the catch the latter may be released and the base and gate swung forwardly about the pivot 44 and removed. For depressing the right hand edge of the plate 20 to open the gate an arm 68 is depressed and engages a lug 67 on the plate. To retain the gate open, a bell-crank lever 81 is operated to cause the head of a screw 85 carried by it to engage and lock the arm 68 in the depressed position; simultaneously, a pivoted shutter 87 is moved so that it does not obstruct the light and a rod 90 operates a switch to close the circuit of a viewing lamp positioned below the table 11. When a separate cut portion of film is to be enlarged, the gate is slid forwardly on the base 40 to the position shown in dotted lines on Fig. 2, and a portion 64 of the upper plate 20 connected by a hinge 92 to the remainder is raised as shown in Fig. 5 for insertion of the film. Specification 465,124 is referred to.
Patent GB-1410526-A (GB)
Title: Industrial gas turbine power plant having capability for effectuating automatic fuel transfer under load employing a digital computer
IPC: F02C9/40
Filed: 1972-11-20
Abstract: 1410526 Automatic control of gas turbines WESTINGHOUSE ELECTRIC CORP 20 Nov 1972 [6 Dec 1971] 53479/72 Heading G3N A gas turbine electric power plant having a plural fuel supply sub-system is controlled by system comprising a digital computer and an associated external circuit means which determines the ratio between fuel control signals. During a change of turbine operation from one fuel to another the control system derives a signal representing computed total fuel demand and a time varying ratio of fuels to satisfy the demand, which are applied to the circuit means to derive individual control signals for each of the plural fuel sub-systems.
Patent GB-1494106-A (GB)
Title: Tool holder especially for hammer drills
IPC: B23B31/171
Filed: 1974-12-10
Abstract: 1494106 Tool holders for drills H REINHOLDT AS 10 Dec 1975 [13 Dec 1973] 53487/74 Heading B4C [Also in Division B3] A tool holder, especially for hammer drills 8, comprises a tubular member 2, which can be connected by shank 1 to a machine chuck, and a tightly-fitting elastic bush 4 of plastics material, surrounding the member 2 and engaging one or more locking pieces 3 extending through respective apertures in member 2 and lockingly engaging in recesses in the tool shank 7. Rotation of the bush brings recesses 5 on its inner surface into register with pieces 3 to allow the tool to be withdrawn. The bush may have a flange 9, to dispense drill dust, and a groove at its rear end which engages a collar 6 on member 2 to retain it and inhibit axial movement but allowing disassembly. Different shapes of locking pieces include elliptical, Fig. 2, having a groove 10 so that the pieces do not engage a corner of the tool shank; elliptical with one flat side, Fig. 3 (not shown), and generally elliptical with three flat sides on its inner face, Fig. 4 (not shown). The bush may have a surrounding rigid, e.g. steel, band at least in the area adjacent the locking pieces and other areas under stress, e.g. the recesses 5 may have embedded steel parts. The locking pieces may be of plastics material with embedded steel parts or may be of sintered metal with lubricant containing pores.
Patent GB-1066760-A (GB)
Title: Improved clothes dryer
IPC: D06F58/00
Filed: 1965-12-16
Abstract: 1,066,760. Clothes driers. WHIRLPOOL CORPORATION. Dec. 16, 1965 [Jan. 4, 1965], No. 53515/65. Heading F4G. A clothes drier comprises a stationary drum 19 in which the clothes are tumbled by baffles 33 mounted on a ring-shaped carrier for movement relative to the drum and driven from a motor 40 by a drive belt 37 drivingly wrapped about the periphery of the carrier. The drum comprises two axially spaced portions 41, 42 the adjacent inner ends 46, 47 of which are shaped as by flanges to form a circumferentially continuous track or guide in which the carrier rotates. A centrifugal fan 27 discharges air through a conduit containing heating means and an air inlet 29 into the drum, which air traverses the drum for exit through an aperture (not shown) in the rear panel 13 of a housing in which the drum is located.
Patent GB-1486624-A (GB)
Title: Profiled hinge
IPC: E05D3/06
Filed: 1974-12-11
Abstract: 1486624 Hinges P R G ROUSTIT 11 Dec 1974 [11 Dec 1973] 53589/74 Heading E2F In a hinge for connecting movable panels 30 about a profiled mounting component 10, two toothed intermeshing sectors 16, 18 are in mutual engagement and are provided on two gears 20, 22, the profiled mounting component 10 being provided with two parallel toothed tracks 12, 14 which engage with second toothed intermeshing sectors 24, 26.
Patent GB-1143449-A (GB)
Title: Device for use in stripping wallpaper
IPC: B26B3/08
Filed: 1966-11-30
Abstract: 1,143,449. Scrapers. R. H. TREADWELL and J. E. TREADWELL. 7 Nov., 1967 [30 Nov., 1966], No. 53604/66. Heading B4B. A device for stripping wallpaper comprises a metal plate 5 to which a metal handle 6 is secured, the plate having punched-out spiked projections 13. In a modification, a body of sheet steel, preferably tin plated, comprises a steel sheet having punched therefrom projections of approximately triangular shape having spiked ends, the periphery of the steel sheet having welded thereto a steel band, the edges of which remote from the steel sheet are shaped to provide a lip.
Patent GB-1166636-A (GB)
Title: Process for the production of Cycloacetal Esters and Cycloketal Esters
IPC: C07D319/06
Filed: 1966-12-01
Abstract: 1,166,636. Cycloacetal and cycloketal esters. CHEMISCHE WERKE HULS A.G. 1 Dec., 1966 [2 Dec., 1965], No. 53822/66. Heading C2C. Cycloacetal esters and cycloketal esters are prepared by reacting a Cycloacetal alcohol or cycloketal alcohol, obtainable by heating in the presence of an acid catalyst and with removal of water of reaction an aldehyde, a C 3-7  aliphatic or cycloaliphatic ketone or an aromatic ketone and a triol of the formula l is 0 or 1-8, m is 0 or 1-14, + m being at least one, and each R represents hydrogen or an organic substituent, with a mono- or di-carboxylic acid, or an anhydride thereof, in the presence of a separate, strongly acidic catalyst having a pka of not more than 4 whilst removing the water of reaction to produce the mono-ester of the mono-acid or the di-ester of the di-acid. Many suitable aliphatic, cycloaliphatic and aromatic aldehydes and ketones and triols from which the starting cycloacetal and cycloketal alcohols can be prepared are specified. Suitable mono- and di-carboxylic acids include aliphatic, halogenated aliphatic, cycloaliphatic and aromatic acids. Esterification may be effected at 70‹-180‹ C. using stoichiometric proportions of alcohol and acid and in the presence of a water entrainer, e.g. benzene. Specified acidic catalysts having the required pka are H2SO 4 ,H 3 PO 4 , HC1O 4 , p-toluenesulphonic acid, trichloroacetic acid, cationic ionexchangers, and acid-treated bleaching earths, e.g. montmorillonite. Examples describe the preparation of esters from a variety of cycloacetal and cycloketal alcohols containing 1,3- dioxane and 1,3-dioxolane rings and formic, lauric, acetic, oxalic, butyric, chloroacetic, succinic, propionic, trichloroacetic, phenylacetic, adipic, benzoic, palmitic and α-ethylbutyric acids.
Patent GB-1450490-A (GB)
Title: Process for preparing treicyclohexyltin derivatives
IPC: C07F7/22
Filed: 1974-12-20
Abstract: 1450490 Preparing tricyclohexyltin halides OXON ITALIA SpA 20 Dec 1974 [28 Dec 1973] 55207/74 Heading C2J Tricyclohexyltin chlorides and bromides are prepared by reacting one mol of an addition compound, obtained by reaction of one mol of tin tetrahalide in a hydrocarbon with two moles of an aliphatic, aromatic or cyclic ether, with three mols of a Grignard reagent complexed with such an ether, the reaction being effected usually in a hydrocarbon medium and in accordance with the reaction where X is Cl or Br. The other R<SP>1</SP> 2 O may be diethylether, di-isopropyl ether, di-n-butylether, THF, methyl-THF, tetrahydropyran, dioxane, anisole or N-methylmorpholine and the reaction medium may be toluene.
Patent GB-1142249-A (GB)
Title: Improvements in or relating to the production of substituted s-triazines
IPC: C07D251/50
Filed: 1966-12-12
Abstract: 1,142,249. Triazine derivatives. AGRIPAT S.A. 12 Dec., 1966 [13 Dec., 1965], No. 55458/66. Heading C2C. 2 - Chloro - 4,6 - bis - amino - s - triazines of the formula wherein R 1  and R 3  are hydrogen atoms or alkyl, alkenyl, hydroxyalkyl, aralkyl, or cycloalkyl groups and R 2  and R 4  are alkyl, alkenyl, hydroxyalkyl, aralkyl or cycloalkyl groups, or R 1  and R 2  and/or R 3  and R 4  together with the nitrogen atom are 5- or 6-membered alkylen-imino radicals or the morpholino radical, are obtained (a) by reacting in a medium containing less than 10% by volume of water substantially equimolar amounts of primary or secondary amines and cyanuric chloride substantially completely dissolved in inert organic solvents in the presence of acid acceptors, and (b) by reacting the dichloro-s-triazines produced with the same or a different primary or secondary amine in the inert organic solvents in the presence of acid acceptors. The acid acceptor may be an inorganic alkaline substance, a non-reactive secondary or tertiary amine or it may be constituted by an excess of the reacting amine, and the organic solvent may be chlorobenzene, carbon tetrachlorid, methyl ethyl ketone, toluene or benzene. A continuous method of operation is described.
Patent GB-1328310-A (GB)
Title: Production of aluminium by electrolysis
IPC: C25C3/20
Filed: 1971-11-30
Abstract: 1328310 Producing aluminium by fusion electrolysis SWISS ALUMINIUM Ltd 30 Nov 1971 [1 Dec 1970] 55587/71 Heading C7B An electrolytic cell for production of Al in a molten F bath with pre-baked C anodes is operated by maintaining an interpolar distance of 5 to 6 cms, an Al 2 O 3  covering 14 to 16 cms thick on all the encrusted surface of the bath, and an anode current density such that as much heat is produced in the cell as it can carry away as losses, after deducting the heat employed in the decomposition of the Al 2 O 3  and heating of the raw materials, while the electrolyte temperature lies between 940‹ and 975‹C.
Patent GB-1211761-A (GB)
Title: Improvements in or relating to cyclohexene - and cyclohexane - carboxylic acid derivatives
IPC: C07C62/38
Filed: 1968-11-25
Abstract: 1,211,761. Phenyl cyclohexane derivatives. SYNTEX CORP. 25 Nov., 1968 [11 Jan., 1968], No. 55857/68. Heading C2C. The invention comprises compounds of the formula where R<SP>1</SP> is Cl, F, OH or the hydrolysable carboxylic esters thereof, lower alkoxy, CH 2 OH or the hydrolysable carboxylic esters thereof, CHO, CH 2 Cl, CH 2 F, CHCl 2 , CHF 2 , CCl 3 , CF 3 , CN, phenyl, benzyl or COOR, where R is H, lower alkyl or an alkali metal; R<SP>2</SP> is methyl or ethyl; R<SP>3</SP> is H, methyl, ethyl or isopropyl; R<SP>4</SP> is H, OH or the hydrolysable carboxylic esters thereof, lower alkoxy, cyclopentyloxy, cyclohexyloxy, tetrahydropyran - 2<SP>1 </SP>- yloxy, tetrahydrofuran - 2<SP>1 </SP>- yloxy, OSO 2 OX or OPO(OX) 2 , where X is H or an alkali metal; R<SP>5</SP> is lower alkyl or as R<SP>4</SP>; R<SP>6</SP> is CH 2 OH or the hydrolysable carboxylic esters thereof, CHO, COCl, COF, CONH 2  or COOR and each of Z and Z<SP>1</SP> is a single or double bond at least one being a single bond and when R<SP>6</SP> is COCl or COF then R<SP>4</SP> and R<SP>5</SP> are not OSO 2 X or OPO(OX) 2 . The lower alkyl and lower alkoxy groups contain 1-6 carbon atoms. The compounds may be produced in accordance with the following reaction scheme where R<SP>1</SP>' is H, F, Cl, Br, OH or the hydrolysable carboxylic esters thereof, lower alkoxy, CN, CCl 3 , CF 3 , phenyl, benzyl or COOR<SP>1</SP>, where R<SP>1</SP> is H or lower alkyl and R<SP>2'</SP> is H or methyl. Alternatively the tautomeric mixture of Formula VA and VB may be converted to the keto ester, reduced to the acid ester and hydrolysed. The products may be reacted as appropriate to give compounds containing other substituents, e.g. for R<SP>1</SP> and R<SP>6</SP>.
Patent GB-1167039-A (GB)
Title: Jet Propulsion Engine Thrust Deflector.
IPC: F02K1/62
Filed: 1966-12-14
Abstract: 1,167,039. Deflecting propulsion jets. UNITED AIRCRAFT CORP. 14 Dec., 1966 [29 Dec., 1965], No. 56072/66. Heading B7G. A jet-propulsion engine thrust deflector incorporates a flap 2 comprising two elements 4, 6 hinged together at 8 so that in the inoperative position the flap is folded back (shown dotted). The flap 2 may be extended and retracted by an actuator 40 operating a linkage system 10, 20, 24, 34, 38. In the extended position the flap 2 may form a segment of a cone, Fig. 2 (not shown). The flap may incorporate vanes 46 to deflect the jet efflux, and the flap may be used with doors in the jet pipe wall.
Patent GB-1286318-A (GB)
Title: Fluorocarbon resin to glass bonding
Inventor: BAUM GEORGE
IPC: B05D5/08
Filed: 1969-11-18
Abstract: 1286318 Coating glass surfaces with fluorocarbon resins CORNING GLASS WORKS 18 Nov 1969 56269/69 Heading B2E [Also in Divisions B5 and C1] A fluorocarbon resin is bonded to the surface of a silicate glass substrate, e.g. an alumino silicate or borosilicate glass, by (a) cleaning and. drying the glass surface to leave the surface with free available silanol groups (b) treating the cleaned glass surface with a solution of a coupling agent which is an amino-functional silane containing one terminal portion which is reactive with the silanol groups on the glass surface and a second terminal portion which contains a functional amino group, (c) applying a fluorocarbon resin, e.g. polytetrafluoroethylene or a fluorinated ethylene-propylene copolymer to the treated glass surface and (d) heat treating the resin to couple it to the coupling agent at an elevated temperature below that at which the resin degrades rapidly. The coupling agent may be N-beta-aminoethyl-gamma-amino propyltrimethoxy silane, N - beta - aminoethyl - (alpha - methyl - gamma - aminopropyl) dimethoxymethyl silane or gamma-aminopropyltriethoxysilane, suitable solvents for applying the coupling agent as a solution to the glass surface being toluene, benzene, xylene and/or a higher boiling hydrocarbon. The glass surface may be cleaned by heating to 500C to oxidize any organic matter present, by treating with 50% nitric acid solution at 80-100C. washing and drying with acetone or by alternately dipping in a 50% hydrofluoric acid -50% sulphuric acid solution ad nitric acid bath, rinsing in hot nitric acid at 80-100C and rinsing in boiling water. Particularly dirty glass may first be washed in boiling detergent solution, rinsed with water and placed in nitric acid solution. Drying may be effected in an oven at 100C for 24 hours or at 400C for for 15 minutes. Solution containing 0.1-5% by weight of the coupling agent may be used which may be applied by dipping or by a refluxing technique. The treated surface may then be heated to 60-140C. The fluorocarbon resin may be applied in the form of an aqueous dispersion which may contain a wetting of agent by dipping or spraying and then dried at 90-120C and heated at 260C. Heating may be effected at temperatures up to 400C.
Patent GB-1323519-A (GB)
Title: Power supply units
IPC: H04N3/185
Filed: 1971-12-06
Abstract: 1323519 Converting ATES COMPONENTI ELETTRONICI SpA 6 Dec 1971 [5 Dec 1970] 56445/71 Heading H2F A power supply unit for a television receiver, comprises a rectifier D 1  operative on the mains supply Vr, a first smoothing circuit C 3  and a chopping transistor TR 1  operative on the output of the first smoothing circuit, the output being regulated by means of a second transistor TR 2  shunting the base circuit of TR 1  and controlled by a signal dependent on the cathoderay tube beam current. The invention is applicable to use with an EHT supply having an impedance less than 2À5 Megohms. As described, the rectified mains supply is smoothed by C 3  and chopped by transistor TR 1  controlled by linefrequency pulses from winding T 4  of the EHT transformer TAT. The chopped output is smoothed by the primary winding T 1  of the EHT transformer TAT and by capacitor C 8  so as to provide + 32V for the rest of the receiver. The EHT transformer TAT is tuned by L 1 , L 2 , C 7  to the fifth harmonic of the flyback frequency, the EHT being produced by rectifying at D 6 , the flyback pulses induced in winding T 2 . Variation in cathode-ray tube beam current provides a corresponding variation in the voltage of pulses induced into winding T 4 ; this volatage is rectified at D 3  and used to vary the conductivity of TR 2  and hence adjust the current in the chopping transistor TR 1 . Starting arrangements.-Initially the line oscillator Os and the horizontal deflection circuit FO are driven by a potential derived from the output of rectifier D 1  via capacitor C 1  and diode D 2 . This diode isolates the starting supply when the chopper-stabilized + 32V supply is operating. Protection.-Resistor R 12  protects the circuit in the event of damage to transistor TR 1 ; dissipation on R 12  during normal operation is reduced by C 4 .
Patent GB-1442417-A (GB)
Title: Fluid filter
IPC: B01D46/04
Filed: 1972-12-07
Abstract: 1442417 Gas filter GEORG FISCHER AG 7 Dec 1973 [7 Dec 1972] 56965/73 Heading BIT A gas filter comprises at least one inwardflow filter tube or pooket 2 attached to a filter gas outlet 6 above which is arranged a reverse flow gas delivery nozzle (5) Fig. I, (not shown), outlet 6 comprising concentric tubes 7, 8, the inner tube being non-uniform in axial section and having one or more holes or slots 14 in its wall between its open ends 12, 13. Tube 7 is removably supported in tube 8 by radial straps 15, which may be twisted to impart rotation to gas flowing along space 10. Tubes 7, 8 correspond in transverse sectional shape to the filter tube/pocket 2 (Figs. 3 to 6, not shown). Tube 7 shown has a double frustoconical form, but could be double frustopyramidal or have other axial sections (Figs. 7, 8, not shown). Outlets 6 are fixedly or removably mounted to extend through a wall 18 separating filtered and dirty gas chambers, and a filtered gas outlet fan (23) and reverse flow valves (4) are included. Filter tubes/pockets 2 are demountably clamped round tubes 8. The outlet construction is stated to improve reverse flow cleaning efficiency without being of excessive height.
Patent GB-1404769-A (GB)
Title: Waveform synthesisers
IPC: H03K4/02
Filed: 1971-12-08
Abstract: 1404769 Waveform synthesiser BRITISH AIRCRAFT CORP Ltd 1 Dec 1972 [8 Dec 1971] 57075/71 Heading H3H In a waveform synthesizer, the ordinates of the waveform are stored in binary form in a memory store and read out in parallel at a fixed frequency into a multibit digital to analogue converter in a predetermined sequence. A square wave of the same frequency is fed to an additional least significant bit input of the A/D converter and its phase is inverted at the peaks and troughs of the resulting analogue waveform so that it is made "1" during the second half of each upward step and the first half of each downward step to smooth the resulting waveform. The ordinates are entered into store 10 in 8 bit parallel binary on lines D 1 -D 8  from computer 11 under the control of addresses and enabling signals from clocked counter 13. During waveform generation the six most significant figures are clocked from the addressed store section via register 16 to D/A converter 15. The two least significant figures are processed in clock pulse regulator 17 to give a square wave which is "1" during the second half of each upward step and the first half of each downward. This is supplied to the seventh least significant input of the D/A converter. The counter 13 may count alternately up and down for symmetrical waveforms.
Patent GB-1371660-A (GB)
Title: Radio receivers
IPC: H04B1/16
Filed: 1971-12-09
Abstract: 1371660 Radio receivers TEXAS INSTRUMENTS Ltd 9 Dec 1971 57309/71 Headings H3T and H3Q A radio receiver comprises a single tuned circuit L1, VC, which circuit forms the aerial and is connected to a radio frequency amplifier (T30-T35) with feedback (via R9) to increase the Q-value, a separate detector (T43) and a low frequency amplifier (T20-T29) including means to compensate the frequency response for the narrow bandwidth of the tuned circuit. As shown, the compensation is effected by C 2 -C 7 . A.G.C. is provided by R9 and amplifier T36-T38, C10. The amplifier quiescent current is set by R34, T23, T24. The ratio of areas of the baseemitter junctions of T23, T24 are inversely proportional to the ratio of the values of resistors R25, R34 so that, with the emitter potentials of T22 and T28 equal to half the supply potential, the voltage drops across the resistors are equal. If the potential at the emitter of T28 falls, the current through T23 falls and biases T25 to reset the potential level at T28 &c. Also, the ratio of the values of resistors R28, R29 are inversely proportional to the ratio of the base-emitter areas of the transistors T27, T29 to maintain the base-emitter voltages equal. The circuitry within the dotted line may be of integrated construction.