baber/WOPTO huggingface dataset:
Patent GB-983570-A (GB)
Title: A device for regulating the amplitude of an electric current
IPC: H03K17/64
Filed: 1961-05-24
Abstract: 983,570. Magnetic storage devices; transistor pulse circuits. TELEFONAKTIEBOLAGET L. M. ERICSSON. May 24, 1961 [May 24, 1960], No. 18838/61. Headings H3B and H3T. A circuit for driving a magnetic storage device with read and write pulses of substantially constant amplitude and shape comprises a circuit arrangement maintaining substantially constant current through an inductor in the pulsing circuit. On receipt of control signals, circuits A, B, comprising transformers T2, T3 and transistors Q1, Q2 transmit read and write pulses iL or iS to transformer T1 the secondary of which feeds the storage device. An inductor L 0 , a capacitor C 0  and a resistor R 0  are common to the circuit of both read and write pulses iL, iS. The inductance L 0  tends to keep the current therethrough constant for short intervals between pulses. A comparison circuit E compares the voltage across R 0  with a fixed reference voltage derived from a battery E3 and signals are given on lead J if the voltage across R 0  falls below the fixed reference voltage. A logical device F transmits the signal over lead K to transformer TL and transistor Q, only outside read and write periods rL, rS and in the absence of signals L, S calling for read and write pulses. A signal on lead K enables transistor Q to transmit a pulse through inductor L 0  to maintain the current I 0 . This pulse is repeated whenever the voltage across R 0  falls. In the comparison circuit E, the fixed reference voltage is derived from battery E3 by a potentiometer arrangement of resistors R4, R5 and a silicon diode D 0 . When the voltages to be compared are the same the current through resistor R 2  divides equally between transistors Q 3 , Q 4 . If the voltage across R 0  falls, transistor Q 3  robs Q 4  and the voltage across R 3  falls. To compensate for thermal effects, diode D 0  has the same temperature dependence on the ferrite cores of the store. A Zener diode D z  stabilizes the reference voltage. The battery voltages are related by the expression: E 3  > E 2  > O > E 1
Patent GB-1235893-A (GB)
Title: A method of treating iron and steel products having a film containing chromium on the surface
IPC: C25D11/38
Filed: 1968-04-22
Abstract: 1,235,893. Improving corrosion resistance of ferrous bodies. NIPPON STEEL CORP. April 22, 1968 [April 21, 1967 (2); April 26, 1967], No.18897/68. Heading C7B. A method of improving the resistance to corrosion of an iron or steel body having a film on its surface of metallic chromium and/or hydrated chromium oxide comprises dipping the body into an aqueous bath containing one or more of sulphurcontaining anions, halogen-containing anions, and nitric acid ions and substantially free from ions which plate out as metal from the bath and electrolytically treating it as cathode so that a hydrogen discharge occurs which modifies the chromium or hydrated chromium oxide film. Typically this cathodic hydrogen treatment is effected in an IN bath of sodium sulphate at 20‹ C. or 50‹ C., or from IN solutions of sodium fluoride, sodium chloride or ammonium sulphate at 50‹ C., the current density and treatment time varying over wide ranges. The chromium and hydrated chromium oxide films may be electro-deposited on the iron or steel body from the usual baths or the hydrated chromium oxide may be cathodically deposited from a low concentration chromic acid bath containing sodium perchlorate. The hydrogen treated bodies readily receive synthetic resin paints.
Patent GB-530730-A (GB)
Title: Improvements in and relating to planetaria
IPC: G09B27/02
Filed: 1939-06-29
Abstract: 530,730. Planetaria. KORKOSZ, F. D., and KORKOSZ, J. J. June 29, 1939, No. 18928. [Class 146 (ii)] [Also in Group XX] In an optical-projection planetarium, the projection fields of the lens systems overlap the lens systems may be mounted in a support containing a number of lamps of different intensities variously associated with the systems, and means for cutting off projection below the limits of the projection screen and for producing a twinkling effect in the projected light spots may be provided. The screen may have lower parts merging into a cylindrical wall and of larger radius than the portion around the zenith, the light spots thereon being thus larger nearer the horizon than at the zeriith. As shown, the lens support 10, movable along a vertically curved track, and rotatable both about an axis perpendicular to the plane of the ecliptic and about a normally vertical axis, carries lens holders 18 associated with lamps 12, 14, 16. The holders 18 each carry a projection lens 22, condenser 34, and perforated disc 30. A ring 52 rotatable about the lens tubs 20 carries a U-shaped weight 58 which is pivoted about the axis of a shaft 56 carrying a shutter 50 and is geared thereto by. a segment 62 and gear 64; the weight swings as the support 10 is rotated to operate the shutter and cuts off projection below the limits of the screen. One or more of the lamps may have members 74, Fig. 6, rotatable by a motor 76 and gearing 78, 80 to produce a twinkling effect in the light spots projected by it. The support 10 is rotatable by a shaft 9 in a casing 8 and may be rotated about the axis of a shaft 11, the shafts being connected by gears 15; means P for projecting planets, and means 5 for projecting the bodies in the south polar region are provided. The projection screen, Fig. 5, comprises a domed surface supported from the roof &c. 42, the sides 46 of the surface being of greater radius than the uppermost portion 44 and merging into a cylindrical portion 48; a sky-line may be depicted on the portion 48. The extra projection throw caused by the shape of the lower part of the screen causes the light spots thereon to be larger than those on the portion 44, thus simulating the effect perceived when looking at stars.
Patent GB-530735-A (GB)
Title: Arrangement for clamping the handles of pneumatic hammers so as to permit of settingthe compressed air exhaust apertures
IPC: B25D17/04
Filed: 1939-06-29
Abstract: 530,735. Pneumatic hammers. ELOY, F. June 29, 1939, No. 18980. Convention date, Dec. 13, 1938. [Class 124] In order to set as desired the position of the exhaust apertures 10, which are provided in a casing 6 supported on a shoulder 8 around the periphery of the cylinder of a pneumatic hammer, the handle 2 is clamped thereto and to the cylinder through an intermediate resilient metal washer 4 provided with circumferential or radial undulations. The handle is screwed at 12 on the cylinder and clamps the distribution assembly 13, 14 against the end of the cylinder.
Patent GB-953128-A (GB)
Title: Metal specific indicator solutions
IPC: G01N31/22
Filed: 1961-05-25
Abstract: Stable solutions of metal specific indicator dyes are prepared by dissolving a metal specific indicator dye of the o-o1-diaryldiazo type in a polyhydric alcohol, or a mixture of several polyhydric alcohols, with or without water.  The polyhydric alcohol is preferably a polyglycol, e.g. polyethylene or polypropylene glycol, and to avoid the use of a buffer a water soluble amino alcohol or a mixture of several of such alcohols is added to the stabilized solution of the indicator dye in an amount which is 1-40% by volume of the final solution.  By adding this amount of amino alcohol, the pH of the solution is maintained at 9-10,5.  Amino alcohols mentioned are tris(hydroxymethylamino)-methane; diisopropanolamine and triethanolamine.  A small amount of the magnesium or zinc complex salt of ethylenediamine tetraacetic acid (EDTA) may be added as well as an indifferent water-soluble yellow dye, e.g. methyl orange, may be added to ensure a sharp colour change at the end point of titration.  In the examples, stabilized indicator dye solutions are prepared in which the dye is Eriochrome-black-T. The stabilized indicator dye solutions may be used to determine the alkaline earth metal content of a sample and the residual hardness in soft water.
Patent GB-735152-A (GB)
Title: Improved apparatus for producing and delivering heated air
Inventor: GREAVES BRYAN HAROLD
IPC: F24H3/06
Filed: 1953-07-09
Abstract: 735,152. Liquid fuel burners. DRAGONAIR, Ltd. Jan. 20, 1954 [July 9, 1953; Sept. 3, 1953], Nos. 19005/53 and 24348/53. Class 75 (1). [Also in Group XIII] In an air heater (see Group XIII), a burner head 4 in which a mixture of air and liquid fuel is burnt comprises a chamber 23 with a cylindrical burner housing 26 projecting through its end wall 24. A fuel atomizer jet 27 is seated in a conical base 28 fitted into the rear portion of the burner housing 26. Primary and secondary air flow through holes in the burner housing 26 and through gaps in the end wall 24 with associated baffles 37b. Tertiary air enters the combustion chamber 3 through openings in the flange 40.
Patent GB-981869-A (GB)
Title: Improvements in or relating to exposure meters
IPC: G03B7/18
Filed: 1961-05-26
Abstract: 981, 869. Photo-electric exposure control. KODAK Ltd. May 26, 1961 [May 27, 1960], No. 19052/61. Heading G1A. [Also in Division G2] The ratio of sensitivity of an exposure meter photo-cell to daylight and tungsten light is modified by mounting a coloured filter in front of the cell so that it intercepts a part of the light falling on the cell. Incident light falls upon a selenium cell 40 through a "Wratten 23A" filter (Registered Trade Mark) except for two circular apertures 38 near the cell electrodes where it is unfiltered. The filter preferably covers 92% of the cell and this makes the ratio of sensitivities to tungsten light and daylight 1.6
Patent GB-1207322-A (GB)
Title: Improvements in vibratory driving apparatus
Inventor: DOMAGALA JOSEPH EDWARD
IPC: E02D7/18
Filed: 1967-04-25
Abstract: 1,207,322. Vibratory pile driving. CEMENTATION CO. Ltd. 25 March, 1968 [25 April, 1967], No. 19083/67. Heading E1H. [Also in Division F2] A vibratory pile driving and extracting apparatus comprises four out-of-balance masses such as 1, 6 which are separately carried on parallel shafts such as 2, 7, and which are disposed in two identical pairs, the centre line C-C of the shafts of one pair being collinear with the centre line of the shafts of the other pair and intersecting at right angles the axis through 8 of the member 19 to be driven or extracted, the two pairs of masses being located on opposite sides of the axis at distances from the axis which are equal to one another and greater than the distances between the shafts of a pair. Spur gearing 5 links the shafts in each pair to cause them to rotate in opposite senses at the same speed and an additional gear 11 in the spur gearing of each pair of shafts is fixed to tuning shaft 14 so that all four shafts rotate at the same speed.
Patent GB-284734-A (GB)
Title: Improvements in thread tension compensating devices for use in winding, twisting, doubling, knitting or other textile machines
IPC: B65H59/10
Filed: 1926-07-31
Abstract: 284,734. British Celanese, Ltd., Ewing, H., and Ryley, E. M., (Administratrix of Ryley, C. F.). July 31, 1926. Tension arrangements.-In a thread tension compensating device for use in winding, twisting, doubling, knitting, or other textile machines and wherein the thread T is led through guides A, C and a guide B on the end of a swinging compensating-arm 5 hinged to the frame 4, the parts are disposed so that when the arm 5 is vertical the guide B is not above the line A-C. A fourth guide D is arranged so that the thread is led to the guide A at a considerable angle to the horizontal. The arm 5 is weighted at 6 and provided with a stop 5<a>. The guide C may be traversed horizontally at right-angles to the line of feed while the arm 5 may be adapted to operate a stop-motion on reaching the position in which additional tension will not be compensated. Specification 12070/10 is referred to.
Patent GB-1060914-A (GB)
Title: Cable splicing boot
Inventor: EDWARDS HUGH ROBERT
IPC: H02G15/18
Filed: 1965-05-06
Abstract: 1,060,914. Sealing cable Joints. W. A. PLUMMER. May 6, 1965, No. 19135/65. Heading H2E. A one-piece envelope for temporarily sealing a partly spliced cable joint, or permanently sealing a completed joint, is made from flexible impervious sheet plastics or rubber and has a longitudinal opening, by which it may be placed around the joint, and ends arranged, when closed, to fit tightly around the cablesheathing. The opening is preferably closed by one or two sets of interfitting tongued and grooved pieces 20, 21 and 27, 28 operated by sliding tab closure members, e.g. 30. Solvent may be applied to the interfitting pieces so that a permanent seal results. A sealing compound and tapes 37 are applied at the ends of the envelope. An envelope for use around a completed joint does not have the enlargement 11 shown for accommodating unspliced cable ends 12, 13. The envelope may be formed from two halves suitably seamed at 32 and 33.
Patent GB-1154562-A (GB)
Title: Coin Counter.
Inventor: SYKES MAURICE
IPC: G07D9/00
Filed: 1965-05-06
Abstract: 1,154,562. Coin counters. MAR-MATIC SALES Ltd. 17 June, 1966 [6 May, 1965], No. 19183/65. Headings G4V and G4X. A coin counter for a gaming machine or change-giving machine includes a hopper 19 for receiving coins, a rotatable disc 22 driven by a motor 30 for carrying the coins past an operating lever 33 of a counter, and a member 38 for directing the coins from the disc to a discharge channel. The coin counter is mounted in a drawer or on a shelf in the gaming or changegiving machine. The hopper has an overflow 15 for directing excess coins to a coin box. The disc 22 is recessed around its periphery 28 and has studs 29 for feeding the coins to the counter and studs 32 for agitating the coins in the hopper. Spring fingers 34, 35 guide the coins and prevent more than one coin passing to the counter at a time.
Patent GB-685358-A (GB)
Title: Improvements in or relating to electric carrier wave modulators
Inventor: JACOBSEN BENT BULOW
IPC: H03C1/20
Filed: 1951-08-15
Abstract: 685,358. Valve modulating circuits. STANDARD TELEPHONES & CABLES, Ltd. Aug. 15, 1951, No. 19244/51. Classes 40 (v) and 40 (vi). A modulating circuit comprises a pair of similar valves 1, 2 with their grids excited in push-pull by an input wave of frequency q, and with their anode-cathode circuits in parallel with each other and in series with the anode-cathode path of a valve 4 to whose grid a second input wave of frequency p is applied and whose anode current follows the instantaneous grid voltage; output being taken at frequencies p, q, p Œ q, from the anode of either or both of the valves 1, 2. The carrier wave (which may be the input p) is amplified in a valve 7 before being applied to the grid of the valve 4, and negative feed-back is applied from the cathode resistor 46 of the valve 4 to the grid of the valve 7. The signal wave (which may be that of frequency q) has one side of its input transformer 3 connected to the grid of a further valve 11, and voltage of frequency q is transferred from the anode of valve 11 to the anode of valve 2 to supplement the voltage of frequency q at the latter point. Negative feed-back is provided from the junction of cathode resistors 33, 34 to the grid of the valve 11, and the amount thereof may be adjusted by a variable resistor 37 switchable into parallel with the resistor 34, thus varying the gain of the valve 11. A network comprising two condensers 39, 40 and an inductor 41 is provided between the cathodes of the valves 1, 2, the network giving series resonance at frequency q and parallel resonance at frequency 2q. Adjustment of condenser 40 and resistor 37 enables the q output at terminals 28 or 32 to be reversed in phase by operating the switch 38, without altering the q output amplitude. The valves 7, 11 may be connected in series across the H.T. supply, interaction being prevented by holding the lead 16 at zero alternating voltage by condensers 27, 26. The modulating wave q may be a speech wave, but the invention is particularly intended for use in measuring the delay of transmission in a wide-band frequency modulation communication system. For this purpose the modulation products p, p Œ q, and the reference wave q are transmitted together over the system, and at the receiving end the reference wave q is recovered from the received modulation products and its delay compared with that of the reference wave q received directly. This is repeated over a wide-band of variation of the p frequency, e.g. from 250 kc/s. to 5 mc/s., while the reference frequency q may be fixed at 60 kc/s. It is necessary that the harmonics of p and q, and the higher order side-bands should be of very small amplitude; and the modulator is designed to meet these requirements.
Patent GB-835206-A (GB)
Title: Improvements relating to ion-exchange processes
Inventor: TYE FRANK LAURENCE
IPC: B01J49/00
Filed: 1955-07-04
Abstract: 835,206. Electric tests. PERMUTIT CO. Ltd. June 21, 1956 [July 4, 1955], No. 19273/55. Addition to 714,642. Drawings to Specification. Class 37. In a cyclic water-softening process regeneration of a cation exchange material containing sodium ions is initiated in a predetermined change in conductivity of cation exchange material in contact with water that has passed through substantially the whole bed. The preferred cation exchange material is a sulphonated copolymer of styrene and divinyl benzene. A sulphonated phenol formaldehyde resin may also be used. The fall in conductivity may give a signal or may initiate regeneration. Conductivity may be measured by electrodes near the end of the bed but may be immersed in a separate bed to which a sample of the water flows from the main bed.
Patent GB-361939-A (GB)
Title: Means for illuminating a surface to be projected
IPC: G03B21/20
Filed: 1930-06-26
Abstract: 361,939. Optical - projection systems. EVANS, W. E., 27, Chancery Lane, London.-(Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) June 26, 1930, No. 19513. [Class 97 (i).] An illuminating system for use with optical projection apparatus is characterized in that the rays of light from the source of light, which are broken up in known manner, for example by a divided concave mirror, into a number of pencils of light, are superposed in the plane of the picture to be projected by a system of condensers preferably having a number of members normal to the optical axis after the real intermediate reproduction of the source of light by means of each of the mirrors and the corresponding parts of the condenser, in such manner that shadows from parts of the source of light or of the members which hold it cannot appear in the gate and upon the projection screen. As shown, e is a concave mirror which casts an image of the source of light c to infinity, the lenses g and the auxiliary condenser m forming real images at c<1>. The surface to be illuminated is situated at f<1> near the field lens o, which produces real images c<11> of the images c<1> in the plane of the objective p, which forms a real image f<11> of the picture f<1> on the projection screen q. Two prisms with equal angles may refract the pencil of light rays from each lens g into a smaller condenser m, or each pencil may be reflected by plane mirrors. The lenses g may be dispensed with by the use of a divided concave mirror in which each part is slightly turned inwards towards the source of light.
Patent GB-256645-A (GB)
Title: Improvements in or relating to steam power plant with intermediate superheating
IPC: F01K7/26
Filed: 1926-08-07
Abstract: 256,645. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts Ges.). Aug. 7, 1925, [Convention date]. Motor power plant; working-fluid supply. - In a power plant wherein a superheater 4 is placed between the high and low pressure stages 3, 7 of a steam turbine, an accumulator 6 is connected by two pipes fitted with non-return valves 9, 10 to the pipe 5 leading from the superheater to the lowpressure stage. The high-pressure stage 3 is supplied with steam at constant pressure from the boiler 1 and takes the normal load, while accumulator 6 feeds the low-pressure stage 7 for peak loads. The stage 3 is controlled by a pressure regulator 2 and the stage 7 by a speed regulator S. Surplus steam from the stage 3 goes into the accumulator.
Patent GB-939838-A (GB)
Title: Vehicle door latches with rotatable bolts
IPC: E05B65/34
Filed: 1962-05-22
Abstract: 939,838. Vehicle door latches. GENERAL MOTORS CORPORATION. May 22, 1962 [May 26, 1961], No. 19575/62. Class 44. A vehicle door latch having a rotatable bolt with a detent lever for holding the bolt against unlatching has an actuator lever for releasing the detent lever, and an operator lever for moving said actuator lever via an intermittent lever thereon, the intermittent lever being movable to a position in which it is out of the path of said operator lever. The bolt 38 is held in latched position by the detent lever 46, Fig. 6, under the influence of the clockwise spring loading of actuator lever 70, Fig. 7, which is pivoted about axis 72, Fig. 3, and whose forked end 76 embraces the end 52 of the detent lever 46. Pivoted on actuator lever 70 at 78 is the intermittent lever 80 which may take up one or other of two over-centre positions under the control of a spring 96 and a lug 92 bent up from actuator lever 70 into an aperture 94 in the intermittent lever 80. In the normal (counterclockwise) position of the intermittent lever, the position of the parts is as in Fig. 3. Manual pressure on a push-rod 22, Fig. 2, moves a spring-loaded operator lever 60 so that a tongue 64 thereon, Figs. 3 and 6, engages a projection 90 on the intermittent lever 80 and moves the actuator lever 70 to unlatch the detent lever 46. When a vehicle is locked by a lock 24, Fig. 1, a link 26 trips the intermittent lever 80 into the downward position, as shown in Fig. 4, so that the projection 90 is out of the path of the lug 64 on the operator lever 60 and therefore cannot be unlatched by push-rod 22. The intermittent lever 80 may also be tripped into such position from inside the vehicle by a remote control bar 30 under the influence of a handle 28, whereby the end of the bar 30 engages an arm 84 on said intermittent lever 80 to trip it to unlocked position. In the event of the door being inadvertently locked while the door is open, either by key or operation of handle 28, the closing of the door causes the detent 50 to be lifted over one of .the teeth of wheel 44 whereby the actuator lever is moved temporarily to the position shown in Fig. 5 and causes a lug 68 on the operator lever 60 to engage a projection 91 on the intermittent lever and trip same to the unlocked position. The door may be opened at all times by the indoor lever 28 by an upward movement which rotates the actuator lever counterclockwise, as shown in Fig. 5, to release detent lever 46. The door may be locked without a key by operating handle 28 and then pressing push-rod 22 during closing, whereby the lug 68 is moved temporarily out of the path of projection 91 on the intermittent lever.
Patent GB-1298352-A (GB)
Title: Electrical switches
Inventor: PEARCE HARRY
IPC: B60S1/48
Filed: 1969-04-17
Abstract: 1298352 Windscreen cleaning systems JOSEPH LUCAS (INDUSTRIES) Ltd 20 March 1970 [17 April 1969] 19577/69 Heading A4F [Also in Divisions H1 and H2] In a windscreen wiper and washing fluid supply system for a motor vehicle, a manually actuated plunger 29, Fig. 5 for closing a switch 27 controlling a motor for the washing fluid supply also actuates a thermal delay timer 15, (see Division H1N) whereby the wiper motor is driven for a pre-set time following the release of the plunger 29. The system includes a rotary switch with contacts 35-39 for controlling slow and high speed wiping, and an end stop wiper parking switch 37.