baber/WOPTO huggingface dataset:
Patent GB-347158-A (GB)
Title: Improvements in or relating to high potential coupling condensers
IPC: H01G4/28
Filed: 1929-10-17
Abstract: 347,158. Condensers. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Oct. 17, 1929, No. 31611. Convention date, Oct. 27, 1928. Void [Published under Sect. 91 of the Acts]. [Class 38 (ii).] A coupling condenser for highfrequency transmission on highpotential lines is made with the insulating body of two or more materials. Thus the actual condenser part A separating the armatures M, N may be made of glass of high disruptive resistance, while the part B provided with ribs R may be made of porcelain. Wires O, S connect the armatures with terminals K, L respectively. The two parts of the body may be connected by a metal band P.
Patent GB-449436-A (GB)
Title: Improvements in or relating to telephone exchange systems
IPC: H04Q5/08
Filed: 1935-11-15
Abstract: 449,436. Light - - current relays. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London..-(Assignees of Vereinigte Telephon - und Telegraphenfabriks Akt.-Ges. Czeija, Nissl, Co. ; 75, Dresdnerstrasse, Vienna) Nov. 15, 1935, No. 31678. Convention date, Dec. 4, 1934. Drawings to Specification. [Class 38 (v)] [See also Group XXXIX] A telephone relay has, in addition to its ordinary contact springs, one or more additional springs tuned to a particular frequency or frequencies adapted to be superimposed on its normal operating circuit. The relay is described for use in selective calling of telephone subscribers on a party line or group system.
Patent GB-636931-A (GB)
Title: Improvements in and relating to amplifier systems for alternating voltages
IPC: H03D1/04
Filed: 1947-12-01
Abstract: 636,931. Valve amplifying circuits. MILSOM, F. R., FURZEHILL LABORATORIES, Ltd., and SMITH & SONS (ENGLAND), Ltd., S. Dec. 1, 1947, No. 31751. [Class 40 (vi)] An amplifier for alternating current of constant frequency but variable amplitude which selectively amplifies the component which is in phase with a constant reference signal comprises means for selecting the quadrature component in the output of the amplifier and for feeding it back so as to oppose the quadrature component in the input. The quadrature component in the output of amplifier 12 is selected by mixing in a demodulator 15 with oscillations from a constant source 22 which are in quadrature with the in-phase reference signal. The demodulated amplitude variations are selected by means of filters and are remodulated from the source 22 in a modulator 17, the output being fed back to the input of the amplifier 12 out of phase, over a path which may include amplifying and phase-adjusting means 23, 24. The in-phase component in the output of amplifier 12 is further favoured by mixing in a demodulator 19 with oscillations from the inphase reference source 25, the demodulated amplitude variations being filtered out and remodulated from the source 25 in a modulator 26. Specifications 576,248, 576,249, [both in Group XXXV], 611,048, [Group XXXVIII], and 617,240, [Group XXXV], are referred to.
Patent GB-1429314-A (GB)
Title: Control units for apparatus for moving loads
IPC: A63J1/02
Filed: 1972-07-06
Abstract: 1429314 Position indication MOLERICHARDSON (STAGE & STUDIO ENG) Ltd 8 Oct 1973 [6 July 1972] 31803/72 Heading B8B [Also in Divisions A5-A6 and F1] A control unit for apparatus for moving loads comprises a control member adjustable in position and adapted to be operatively connected to a control lever of the apparatus, the control lever controlling the direction in which the load is moved, a further member being moved in response to movement of a load, the control member being moved when the further member reaches it to return the control lever to a stop position. As shown, scenery raising and lowering apparatus comprises a vertical hydraulic cylinder 1 having a piston defining upper and lower spaces therein, a piston-rod 2 extending upwards from the cylinder and operatively connected to a pulley system 5-11 having a velocity ratio of 4 and being adapted to raise or lower scenery 13, the hydraulic cylinder being operated by pressure fluid supplied to the upper space thereof. The cylinder is supported by a single pivot only and the pulley system is supported by a bracket 7 secured to wall 3. The supply of fluid to and drain from the cylinder is controlled by a spool type directional valve (28) in a conventional hydraulic system- Fig. 2 (not shown). The valve is operated from a control box 32 having an operating lever 34 connected by crank 35 to valve linkage 23, (22). In the control box, Figs. 3 and 5, the lever 34 is connected via a sleeve 46 to an axially movable rod 47, the sleeve 46 being adjustable as to its position on rod 47. The rod 47 has a centring spring 49 and carries adjustable stops 54, 57 and the position of the sleeve 46 can be used to set the speed of raising or lowering the scenery by positioning the lever 34 and thus determining the amount the control valve (28) is opened. Also in the control box 32 is a drum 59 rotatable by the wire 29 wrapped therearound, the ends of the wire being connected via pulleys 31 (Fig. 1) to a member 36 connected to the piston-rod 2. Thus movement up and down of scenery 13 rotates the drum 59 which rotates screw 37. The latter carries a non-rotatable nut 38 which thus moves up and down according to the position of the scenery and this can be indicated on a suitable scale by pointer 41. The screw also drives a "fine" position indicator 43. Engagment of the nut with either of stops 53, 54 moves rod 47 axially to move the lever 34 to its central position to centralize the control valve (28) and thus cease the motion of the piston and thence the scenery 13. Reference has been directed by the Comptroller to Specification 1,339,826.
Patent GB-340073-A (GB)
Title: An improved method of joining pipes, and pipe-structures made thereby
IPC: F16L13/02
Filed: 1929-10-19
Abstract: 340,073. Superheater Co., Ltd., (Superheater Co.). Oct. 19, 1929. Pipes.-The adjacent ends 1<a>, 2a, Figs. 1 and 2, of two pipes 1, 2 are heated to a welding temperature and then placed over a tubular or annular anvil 3 and forge-welded together by applying external pressure substantially radially to the ends by mechanical hammers &c. The anvil, which may also be heated, is of spherical formation with relatively thin ends and a mid-section of sufficient thickness to withstand the hammering, while the diameter of its bore is preferably the same as that of the pipes. The ends of the pipes are flared to receive the anvil and are preferably scarved as at 1<b>, 2<b>. In a modification, Fig. 3, a portion of the exterior surface of the anvil is conical and the end of the pipe 2 is also conical to hold the same while the pipe 1 is being positioned. The scarving in this case is confined to the end of the pipe 1, and the two pipe ends are placed in overlapping relation before welding so as to secure a pronounced lap weld. The invention is applicable to tha jointing of pipes of different diameter, in which case the anvil is formed of appropriate shape, and with a tapered bore.
Patent GB-268694-A (GB)
Title: Improvements in or relating to means for driving spindles in textile spinning machines
IPC: D01H1/244
Filed: 1926-12-15
Abstract: 268,694. Berlinerblau, J. Dec. 15, 1926. Spindle apparatus; spindle-driving apparatus. - In spinning-machines having spindles d provided with independent electric drives, the motor casings n are supported by the spindles, means, e.g. springs x, being provided to check the tendency of the casings to rotate. Each spindle is formed with a shoulder s forming a support for an axial thrust bearing r by which the casing is supported. A lateral thrustbearing v is provided at the lower end. If desired the bearings may be arranged oppositely while two or more springs x may be provided. Alternatively the casing may be held by a rod or clip. The spindle d is supported on a ball i in a foot step g and in a tapered bush f, but any form of spindle bearings may be provided. The motors B are preferably three-phase or other polyphase motors with short circuited winding and may be arranged in horizontal alignment, or staggered as described in Specification 262,028. The motor casings may be of the enclosed type, of the cage type or of the lantern frame construction described in Specification 260,396.
Patent GB-392554-A (GB)
Title: Improved gauging apparatus
Filed: 1931-11-17
Abstract: 392,554. Linear-dimension gauges. WESTERN ELECTRIC CO., Ltd., Bush House, Aldwych, London.-(Electrical Research Products, Inc. ; 195 Broadway, New York, U.S.A.) Nov. 17, 1931, No. 31858. [Class 106 (ii).] Comprises an indicating or switch member supported from a framework at one end by spaced coaxial spring hinges and free at the other, the member being engaged by workgauging means at a point adjacent the axis of the hinges. A block 10 provided with ears 54 for securing to any framework is provided with upward extensions 11 at one end to the upper surface of which are rigidly secured metallic reeds 12 which project over the block and are secured to a switch or indicating member 14 provided with contacts to engage spring contacts 17, 18 of a signalling circuit. The narrowed down part 21 of the member 14 lying between the parts 11 is anchored by a spring 24 to an adjusting screw 25, the spring holding the member 14 in engagement with the upper contact 17. A work-engaging plunger 26 slidable in the block 10 engages a ball carried by the part 21 at a position slightly offset from the hinge at the shoulders 19 about which the member 14 pivots. A pin 27 passing through the plunger limits downward movement and engages pins on the block 10 to prevent turning. The contacts 17, 18 are connected up in circuit with lamps 45, 41, 47 and relays so that when the member 14 is between contacts 17, 18 in the position shown in Fig. 2 the lamp 41 is illuminated and when in engagement with contacts 17 or 18 the lamp 47 or 45 is correspondingly illuminated. In a modification the switch is arranged vertically. The device is particularly applicable to the gauging of protector block air gaps for telephone circuits. Specification 302,329, [Class 106 (ii), Dynamometers &c.], is referred to.
Patent GB-470836-A (GB)
Title: Manufacture of ketones of polycyclic hydroaromatic compounds
Filed: 1935-11-18
Abstract: Hydroaromatic polycyclic ketones are prepared by causing a compound of the general formula <FORM:0470836/IV/1> where R stands for a polycyclic hydroaromatic radical in the form of its acid halide, to react with an alkali azide, transforming the azide first into the corresponding amine via the isocyanate and then into the alcohol, and finally oxidizing the alcohol.  In cases where the group R contains nuclear double bonds, these may be protected by the introduction of a substituent such as halogen, which is eliminated after the final oxidation is completed.  The reaction with the alkali azide is preferably conducted in aqueous acetone solution, and the azide converted into the isocyanate by a simple heat treatment in a solvent such as toluene.  Any of the usual methods may be employed to convert the isocyanate into the amine, a convenient one being the addition of 60 per cent sulphuric acid.  By means of a suitable oxidizing agent such as chromic acid in glacial acetic acid, or nitrous acid, the amine is transformed in known manner into the corresponding alcohol or ketone.  The invention is particularly applicable to compounds in which R in the above general formula corresponds to the tetracyclic ring system of the sterol series.  Thus 3-hydroxy- or 3-acylhydroxy-bisnorcholenic acid may be converted into the corresponding ketones, which possess sex hormone properties.  In an example, acetoxy-bisnorcholenic acid is converted first into its acid chloride by means of thionyl chloride and then into the azide by treatment with sodium azide.  The azide is heated in dry toluene to form the isocyanate and the latter converted to the amine by either heating with glacial acetic acid and acetic anhydride for 3 hours under reflux, or by vigorously stirring it in benzene solution with 60 per cent sulphuric acid and decomposing the amine sulphate with hydrogen chloride.  The amine after deacetylation is oxidized to the corresponding alcohol in the form of the amine nitrite, by warming in the presence of aqueous nitrous acid.  This process also yields a certain amount of a hydrocarbon, due to the elimination of water between carbon atoms 21 and 19.  A separation of the alcohol and the hydrocarbon is effected by dissolving the mixture in a small amount of ethyl acetate and then adding a large amount of petroleum ether, when the alcohol is precipitated.  The alcohol may be oxidized with chromic acid after intermediate protection of the nuclear double bonds to yield the corresponding ketone.
Patent GB-649568-A (GB)
Title: Improvements in or relating to composite kinematography
Inventor: GUNN FRANK GEORGE
IPC: G03B15/08
Filed: 1948-03-15
Abstract: 649,568. Composite kinematography. TECHNICOLOR MOTION PICTURE CORPORATION. March 15, 1948, No. 32084/49. Divided out of 649,515. [Class 98 (ii)] The invention relates to a method of preparing a travelling mask and a colour record of the foreground of a scene. Two films are exposed to identical images of the scene, the foreground only being significantly illuminated during the whole of the normal exposure period, the illumination of the background being increased to produce exposure while only one of the films is occulted during part of that period, one film being adapted to record some, but not all, of the colour aspects of the scene, the other film recording the remainder. As shown, two films are exposed with a beamsplitter j. One is a bipack with red and bluesensitive components Fr, Fb, the other is a single green-sensitive film Fg exposed behind a green filter fg. A normal shutter f cuts off light to both films while they are moved, and an auxiliary shutter f covers the film Fg during part of the period when the shutter e is open. The foreground F is illuminated continuously, or intermittently while the shutter f is open, by lamps which do not illuminate the backing D. The latter is illuminated intermittently by lamps d while. the shutter f is closed. In this way blue, red and green record negatives of the foreground Fbn, Frn, Fgn are produced, the first two with background areas dark, the third with these areas clear. A positive Fbm is produced and printed in superposition with the negative Fgn to produce a complementary mask Mc from which a silhouette mask Ms is printed. The flow diagram shows how these masks are used to produce masked positives Bbp, Bgp and Brp from colour separation negatives Bbw, Bgn and Brn of a separate and separately photographed background, and also masked positives Fbp, Fgp and Frp of the foreground. From these positives composite colour separation negatives B, G, R for use in imbibition printing are obtained. Specifications 553,197 and 649,520 are referred to.
Patent GB-248709-A (GB)
Title: Improvements in or relating to slot windings for high tension electrical machines
IPC: H02K3/32
Filed: 1925-12-18
Abstract: 248,709. Kando, K. March 7, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Coils and conductors; insulation.-Slot windings for high-tension electrical machines are arranged so that the thickness of the insulation diminishes and the number of conductors in the coils increases from the high-potential end to the low-potential end. As shown applied to the stator of a bipolar machine, the coils 1 - - 6 are connected in series, the coil 1 being connected to a high-potential source S, and the coil 6 being earthed at t. By progressively increasing the number of conductors in the slots from 1 to 6, as shown in Fig. 2, uniform heating, takes place in the coils notwithstanding the different thicknesses of insulation.
Patent GB-1193227-A (GB)
Title: Process for producing Low Density Graphite Structures
Inventor: OLSTOWSKI FRANCISZEK
IPC: C01B31/00
Filed: 1968-07-05
Abstract: 1,193,227. Graphite. DOW CHEMICAL CO. 5 July, 1968, No. 32150/68. Heading C1A. Low density graphite is formed by treating vermicular graphite with a graphite expanding agent e.g. Br 2 , SO 3 , N 2 O 4 , CrO 2 Cl 2 , FeCl 3 , HF, HCI, SiCl 4 , BCl 3 , TiCl 4  or a mixture of any two or more thereof, compressing the treated vermicular graphite to at least 0À3 gm/cc. and treating the compact with a solution of a peroxide in an amount sufficient to produce expansion of the compact. The treated vermicular graphite is preferably compressed to 0À5 to 1À8 g/cc. A solution of hydrogen peroxide containing from 2 to 60 weight per cent H 2 O 2  is preferably used. The temperature of the peroxide solution is preferably 20-40‹ C. or 40-90‹ C.
Patent GB-1271769-A (GB)
Title: Low-pressure mercury vapour discharge lamp
IPC: H01J61/42
Filed: 1970-07-02
Abstract: 1,271,769. Fluorescent discharge lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 2 July, 1970 [5 July, 1969], No. 32263/70. Heading H1D. A low-pressure Hg vapour lamp wherein a tin oxide layer between the luminescent material and glass is provided on its inner side with a protective layer of one or more colourless oxides of Ti, Zr, Hf, Th, Nb or Ta and the protective layer has a thickness of from 0À02 to 1 Ám, e.g. 0À05 to 0À15 Ám. For starting, pure tin oxide may be insufficiently conductive and a dopant such as fluorine may be added to provide a 5000 to 50 K# resistance between the ends. The protective layer reduces black staining during operation and is preferably of titanium oxide, or zirconium oxide for thicker layers reducing interference effects being of lower refractive index. Both layers are preferably provided by the same spray processes. A solution of 20% of SnCl 4  in butanol with HF may be sprayed into the glass envelope at 450 to 500 C. and similarly for the protective layer with a 20% vol. solution of tetrabutyl titanate in butanol. The spray gas is dry air or oxygen to reduce hydrolysis, and the flow rate is preferably at point of change of laminar to turbulent flow. Zirconium oxide is provided by a 20% soln. of tetrapropylzirconate in propanol, while tetrapentyl titanate in butanol or pentanol required no hydrolysis precautions.
Patent GB-537378-A (GB)
Title: Electric modulation systems particularly for television
IPC: H04B1/68
Filed: 1939-12-15
Abstract: 537,378. Wireless transmitting systems. STANDARD TELEPHONES & CABLES, Ltd. Dec. 15, 1939 No. 32303. Convention date, Dec. 17, 1938. [Class 40 (v)] In a single side-band modulation system, particularly for television, the unwanted band is suppressed by an arrangement which involves the use of a second modulation by a carrier wave of twice the fundamental' frequency. The carrier of frequency F is modulated at M1 by television signals of frequency O-f, and part of the modulated signals passes through a filter F1 (passing mainly the lower side-band F to F-f) amplifier A1, and filter F2 to line c. The other part of the signals from modulator M1, comprising both side-bands, passes through amplifier A4, or network DC having a delay equal to that of filter Fl, and amplifier A3, to a second modulator M2. Part of the signals from filter F1 pass through amplifier A2 and cancel out the corresponding frequencies' passing over A4, DC, A3. The remaining frequencies modulate at M2 a carrier of frequency 2F, the resulting signals being amplified at A5 and combined with the signals coming through A1.
Patent GB-161129-A (GB)
Title: Improvements in air extractor ventilators
IPC: F23L17/02
Filed: 1920-11-16
Abstract: 161,129. Barker, W. T. E., and Rowell & Co., Ltd., D. Nov. 16, 1920. Ventilating - shaft tops.-In an air extractor ventilator of the kind described in Specification 27784/06, comprising four lower walls masked by baffle-plates C, the upper and lower edges of the louver plates B are turned over to form angular edges b, and the plates themselves are inclined at various angles, the lowermost series being inclined at approximately 15‹ to the vertical, the next two superimposed series at 30‹, and the next two series at 45‹, with a similar increase in inclination if additional plates are used.
Patent GB-1119751-A (GB)
Title: Improvements in and relating to echo sounding systems
IPC: G01S7/529
Filed: 1965-07-28
Abstract: 1,119,751. Echo-sounding. ELECTROACUSTIC G.m.b.H. 28 July, 1965 [28 July, 1964], No. 32345/65. Heading H4D. In a marine echo-sounding system in which the direction of sounding is varied between the horizontal and the vertical, the receiver amplification characteristic is automatically adjusted according to the sounding direction in order to compensate for changes in the relative reflecting cross-sections of fish and the sea-bed with changes in the sounding direction and thus to emphasise fish echoes. In the embodiment of Fig. 9, one or more characteristic adjustments by means of circuits A, A<SP>1</SP>, B, C, D may be ganged mechanically (as by a cam system F) or electro-mechanically to a mechanical system 14-25 or electrical phase-shifting system for varying the direction of sounding. For near-vertical sounding, fish echoes are received in advance of the sea-bed echo but are of lower amplitude and may therefore be emphasised by introducing a variable threshold amplitude value (S 1 ) (Fig. 4), above which echo signals such as the strong sea-bed echo are suppressed, into the amplification characteristic by means of circuit A which selectively shunts out amplification stage R÷2 for strong echoes. For near-horizontal sounding, fish present a greater reflecting crosssection to ultrasonic waves than does the seabed. The fish echo is then emphasised by introducing a variable threshold amplitude value (S 3 ) (Fig. 4), below which echo signals are suppressed, into the amplification characteristic by means of circuit B. For intermediate sounding directions, the threshold values may be removed but the amplification may be degraded for high amplitude echoes (as at 6 in Fig. 4) by means of a series resistor R 1  in the output to an electrochemical recorder IV, thereby matching the dynamic range of the echo signals to the tonal range of the recorder. Automatic gain control to compensate for echo signal attenuation with range is provided by a feedback loop including circuit D. If a relatively broad echo sounding beam is used, fish echoes tend to merge with the sea-bed echo and appear as peaks in the sea-bed echo. Such peaks may be emphasised by circuits A<SP>1</SP> and C which introduce time constants resulting in preferential amplification of rapid variations in echo amplitude. A variable resistor E 4  in circuit C degrades the amplification of high amplitude echoes, but is shunted by a variable capacitor to prevent degradation of the fish echoes. The amplifier may also be arranged to limit signals above a level (S 6 ) (Fig. 8), and is switched out during transmission.