baber/WOPTO huggingface dataset:
Patent GB-492034-A (GB)
Abstract: 492,034. Actuation of switches. BAILEY, A. H. Oct. 14, 1937, No. 5652. [Class 38 (v)] A switch for controlling the ignition circuit of an internal-combustion engine comprises an insulating casing 1 containing a corrugated metal diaphragm 5 to which is fixed a contact arm 12 carrying a contact 13. An insulating cover 9 engages with the casing 1 by a bayonet fixing 10, 11 and beds down on a washer 8 resting on the diaphragm 5. The cover 9 is closed by a transparent plate 17 to which is attached a contact arm 15 carrying a contact 14. The chamber below the diaphragm is connected by a tube 3 to the induction pipe of an internal-combustion engine. When the engine is. turned over, the reduction in pressure draws down the diaphragm and causes contact 13 to engage contact 14 and complete the ignition circuit from terminal 16 through the contact arms 15, 12 and the diaphragm to a terminal 18. A hand operated valve opening to the atmosphere may be provided on the suction side of the diaphragm to break the ignition circuit at will.
Patent GB-1069975-A (GB)
Title: Shaping cemented hard metal carbide compositions
IPC: C22C29/00
Filed: 1963-12-13
Abstract: In a process of shaping sintered cemented carbide bodies the cementing metal is removed from the surface of the bodies e.g. by leaching, the resultant skeletal surface zone is then shaped and the shaped bodies are then resintered to reinfiltrate cementing metal into the surface zone. The carbide may be at least one of the carbides of W, Ta, Nb, Ti, Zr, Mo and the cementing metal at least one of Co, Ni, Mo, Fe, Cr, W, Mn.  The cementing metal is preferably removed by etching for 1/2 to 72 hours in an aqueous solution of up to 25% ferric chloride and containing HCl to give a pH of 2 to 4. Leaching is carried out at 160 DEG -200 DEG F., and part of the carbide body may be masked with vinyl tape.  After shaping the leached surface e.g. by grinding, resintering is effected at 2300 DEG - 2800 DEG F., in vacuum, a neutral or hydrogen atmosphere.  Using the process intricate shapes such as files, clamping jaws, undercuts, holes may be formed in sintered cemented carbide.
Patent GB-1177578-A (GB)
Title: Improvements in and relating to Arrangements for Moving an at least Partially Reflecting Sheet into a Predetermined Position.
IPC: G03B21/53
Filed: 1967-10-31
Abstract: 1,177,578. Photo-electric transparency positioning arrangement. ERNST LEITZ G.m.b.H. Oct. 31, 1967 [Nov.5, 1966], No.49343/67. Heading G1A. In an arrangement for automatically positioning by means of a servomotor 22 a glass sandwiched slide 5 in a projector, a slit of light from a source 7 is directed obliquely on to a face of the slide and the reflections from the several faces are detected by photo-electric means having two parts 11, 12, the evaluating action of the separate parts being made different by for example a mask or translucent material to reduce the effect of the stronger reflections from the first and second surfaces encountered by the incident beam, and unbalance in the signals developed by the respective parts being used to control the servomotor. The photoelectric means may comprise a single cell or two separate cells, and one of the parts or cells may be of a different resistance from the other as an alternative to masking. Slit widths are discussed.
Patent GB-495865-A (GB)
Abstract: 495,865. Spray carburetters. LETFUSS, W., and STADLER, M. Feb. 18, 1937, No. 4862. Void. Convention date, Feb. 20,1936. [Class 7 (iii)] The supply of aerating air, to the passage 13 behind the fuel nozzle, is controlled by a hit- and-miss valve on the spindle of the main throttle valve 28. This valve comprises a pear-shaped port 311, or circular ports of diminishing size, in the wall of an annular chamber round the spindle, and is arranged to be closed when the main throttle is fullyopened. It is supplied by a passage 211 from the atmosphere, or by a passage leading from a port 21 below the choke tube, which may comprise a pair of spring plates 22 fixed at their upper ends. The nozzle comprises a series of orifices 14<1> controlled by a needle valve 15. A branch of the passage for the aerating air extends to the slow-running nozzle 17 which is thus supplied with fuel. A fuel well 9 and a compensating-air tube 10 having an air filter 12 are provided.
Patent GB-1407594-A (GB)
Title: High voltage converter apparatus
IPC: G05F1/10
Filed: 1972-10-27
Abstract: 1407594 Inductors B B C BROWN BOVERI & CO Ltd and ALLGEMEINE ELECTRICITAETS GESELLSCHAFT AEF-TELEFUNKEN 27 Oct 1972 [29 Oct 1971] 49662/72 Heading H1T [Also in Division H2] In a converter (see Division H2), means for reducing the rate of rise of current in thyristors comprises two stacks K1, K2 of grain-oriented laminations of differing magnetic characteristics and having differing air-gaps # 1 , # 2 . The cores have a common winding Ha and a secondary winding Hi, bridged by resistance R. The equivalent circuit (Fig. 6, not shown) is that of two series-connected inductors, having differing saturation currents, one of which is bridged by the series arrangement of inductance and resistance.
Patent GB-1114357-A (GB)
Title: A radar system
IPC: G01S7/20
Filed: 1966-11-07
Abstract: 1,114,357. Pulse radar; aerials. RAYTHEON CO. 7 Nov., 1966 [1 Dec., 1965], No. 49812/66. Headings H4A and H4D. In a radar system, each pulse consists of subpulses of different carrier frequency and some at least of different width, the pulse being propagated to produce a plurality of beams each arranged to illuminate a different angle of elevation and at least some of the beams have different mean effective radiated power. Thus range decreases with increase of elevation angle. In the embodiment each pulse comprises subpulses of stepped carrier frequency and diminishing width, Fig. 2, produced from a " chirp " generator 10, Fig. 1; each receiver handles a corresponding sub-pulse echo and incorporates pulse compression by known matched-filtering. The sub-pulses may be of sloping carrier frequency; sub-pulse width may be selectively variable for air-sea rescue operations; and the pulse repetition frequency may be constant for moving target applications.
Patent GB-1260176-A (GB)
Title: Walls for buildings and the method of forming same
Inventor: LOUNT GRAHAM CONRAD
IPC: E04B1/00
Filed: 1969-10-13
Abstract: 1,260,176. Cast in-citu walls. G. C. LOUNT and W. D. LOUNT. 13 Oct., 1969 [18 Oct., 1968], No. 50097/69. Heading E1W. Reinforced cast in-citu walls are provided with reinforcing strands or cables 13 tensioned and secured to the end regions of vertically spaced concrete floor slabs 10A, 10B and passing through holes 14 or eye bolts embedded in the intermediate floor slabs. A welded wire or expanded metal grid 18 is wired to the strands 13 between adjacent floor slabs 10, 10A. A plywood form 23 with a smooth inner face 32 is temporarily fixed to the outside and concrete or urithane cement gunned or trowled around the reinforcements from the inside; or an expanded polystyrene permanent insulating shuttering (34), Fig. 10 (not shown), is held by batons (35) on the inside of the reinforcements and cement applied from the outside. In this latter case the wall is supported by anchor members (46), Fig. 9 (not shown), previously embedded in the floor slab ends. The reinforcing strands and the lathing mesh may be formed as a single unit unrolled on the site, see Fig. 8.
Patent GB-1091147-A (GB)
Title: Improvements in and relating to symmetrical generators for eelectrical heating by induction
IPC: H05B6/06
Filed: 1965-11-25
Abstract: 1,091,147. Converting. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov. 25, 1965, No. 50160/65. Heading H2F. [Also in Division H5] The ends 4a, 4b of a bifilar coil 4 are connected to a D.C. source 1 through thyristors 5a, 5b which are fired in turn by a pulse source 7. Terminals 3a, 3b are connected together and form in effect the centre-tap of a single-wire coil having two spatially-coincident halves. Current flows through both halves in series to produce magnetic fields having the same direction. A square wave of more or less sinusoidal total operational current is produced across the inductor 4.
Patent GB-1401182-A (GB)
Title: Electrical generators
IPC: H02N1/08
Filed: 1971-10-28
Abstract: 1401182 Electrostatic generators SCIENCE RESEARCH COUNCIL 13 Oct 1972 [28 Oct 1971] 50287/71 Heading H2A An electrostatic generator employing induction charging comprises a series of parallel, elongated conductive members 8 interconnected, e.g. at their ends 6, by insulating linkages 7 to form an endless, ladder-like chain 3 for conveying charge to a high voltage electrode 2. The ends 6 of the members and the linkages 7 run around two pairs of pulleys 13, 14. In Fig. 1, one pair of pulleys is at the potential of the h.v. electrode 2, but in another embodiment both pairs of pulleys are at earth potential and the h.v. electrode is midway between them. The charging and discharging electrodes, as 10, provided adjacent the pulleys each comprises two portions 20, 21, one on each side of the chain. The conductive members 8 comprise aluminium strips with tubular, stainless steel end pieces 6, and the linkages 7 are of nylon. The generator is disposed in a gas-filled casing 12 with interleaved glass and metal plates 16, 17 supporting the h.v. electrode 2.
Patent GB-1346666-A (GB)
Title: Sewing machines
IPC: D05B37/04
Filed: 1971-11-01
Abstract: 1346666 Trimming PFAFF INDUSTRIEMASCHINEN GmbH 1 Nov 1971 [5 Nov 1970] 50641/71 Heading DIG A sewing machine has a Barber type trimming mechanism having a cutter blade 11 secured to a shaft 5 which is oscillated through a disengagable part 32 by a lever 18 pivoted at 20 to a bracket 19, which is spring biassed to a 'normal' position. Rocking the bracket 19 by a knee lever &c. varies the position of pivot 20 to allow the knife to move against the direction of work feed to sever work in advance of the stitch point. Lever 18 is oscillated by an eccentric rod (16, Fig. 1 not shown) embracing an eccentric (15) on a shaft (14) driven by an independent motor. Depression of handle 40 depresses pin 42 to release pawl 31 from a slot 34 in the dog 35, the spring 36 then rotating shaft 5 until its pin 45 abuts a pin 46 on the handle, the blade 11 then being in a rest position to the rear. Handle 40 is swung about shaft 5 to reengage pawl 32 when the trimming action is again required.
Patent GB-1004236-A (GB)
Title: Spring-controlled support device
IPC: F16F15/067
Filed: 1963-12-24
Abstract: 1,004,236. Spring support devices. L. S. SUOZZO. Dec. 24, 1963, No. 50966/63. Heading F2S. A spring device for a spring-controlled support device comprises a housing 30 and a pair of levers 40, 50 each pivotally connected to the housing. A pair of rod members 44, 54 are pivotally connected to a corresponding lever and a spring means carried by the housing co-operates with the rod members to impart axial movement thereto. In the construction shown the support device consists of a number of pivoted links L-1 to L-6 in the form of a pantograph unit P, the free ends of the pair of levers 40, 50 being pivotally connected to links L-1, L-2 of the device and the elongation and contraction of the support device being controlled by a threaded rod 66 and nuts 67, 68, 69, 70 assembly which nuts co-operate with brackets 64, 65 of the links L-1, L-2. The spring means includes a guide tube 60 which carries a series of opposed disc springs 61, the guide tube being slidably housed in guide elements 47, 57 of the rod members 40, 50. The disc springs are spaced by rings 62. In a modification of the spring device, Fig. 5, the rod members 96, 100 carry at their ends movable plates 76, 77 which are biased away from each other by a spring 95. In a further embodiment (Fig. 8, not shown), further helical springs are positioned between the ends of the housing and the movable plates 76, 77. The axes of the pivots of the levers 40, 50 may be in one plane or the axis of the pivotal connection of the rod means may be offset from the plane of the axes of the other two pivotal connections (Figs. 6, 7, not shown). The support device may depend downwardly from a suspended member, e.g. a beam, or may be mounted on a base member and project upwardly. With a constant force spring device the support device is variable and with a variable force spring device the support device is constant. The springs in the spring means may be a combination of disc and helical springs. Specification 841,332 is referred to.
Patent GB-1200894-A (GB)
Title: Candle dipping machine
Inventor: BARFRED NIELS GEORG
IPC: C11C5/02
Filed: 1966-11-14
Abstract: 1,200,894. Coating candles. N. G. BARFRED. 14 Nov., 1967 [14 Nov., 1966], No. 50982/66. Heading B2L. In a machine for dipping candles the candles 28 are carried by a clamp 18 on the ends of radially extending arms 5 which are lowered to collect the candles from a holder 16 by a piston and cylinder 14, lowered again into the various treating baths, e.g. 17 as the arms are indexed and then finally lowered to release the candles for packing the number of arms equalling the number of treatment containers plus the collection and discharge points. The jaws of the clamps 18 are opened and closed by a member 25 which acts on the jaws 23, 24 which are connected to the clamp 18 to open and close them. The jaws 23, 24 are always partly open and the member 25 has a tapered end and is rotated to open the jaws. The dipping may be to add a non-drip outer coat of stearin or a coloured layer or to produce a glossy or glazed surface by dipping in cold water immediately after diping in melted candle composition. The candles may be only partially withdrawn at first to produce a taper before the final withdrawal.
Patent GB-1084777-A (GB)
Title: Production of sheet-like fibre fleeces
IPC: D04H3/02
Filed: 1964-12-21
Abstract: Continuous filaments are fed in water to the screen of a paper-making machine at a speed greater than that of the screen so that they become entangled on the screen.  The filaments may be of a polyester, polyacrylonitrile, polyamide, polyolefin, glass loaded with thermoplastic synthetic materials, or regenerated cellulose.  The screen in the web forming zone may be inclined upwardly with suction boxes at different pressures on the inside of the screen and a breast box on the outside.  In the box a feed duct is positioned with its end adjustably positioned adjacent the screen, the duct widening from a circular cross-section to a preferably adjustable, slot-shaped opening at the end.  The opening is preferably largest in the middle. Water is fed at a speed greater than that of the wire through the duct, and draws and opens out the continuous filaments fed into the duct through a water-filled chamber adjustably positioned at the end of the circular-shaped portion of the duct.  The filaments may be spun directly into the chamber.  Water which may optionally contain staple fibres - for example thermoplastic bonding fibres - is fed directly into the breast box.  There may be a plurality of feed ducts side-by-side, preferably slightly offset vertically and overlapping laterally, with the exit slots adjusted in the regions,of the overlap so that a web of even thickness is obtained.  The filaments may be reciprocated across the screen. The web may be formed of a plurality of layers varying in thickness, and/or composition, and/or the traversing.  A laminate may be formed composed of outer layers of continuous filaments and an inter layer of staple fibres.  The web can be passed through a hot calender.
Patent GB-1269788-A (GB)
Title: N-substituted-1-hydroxy-2-naphthamides and their use as cyan couplers
Inventor: IWAMA MASAKUNI
IPC: G03C7/333
Filed: 1969-10-22
Abstract: 1,269,788. N - Substituted - 1 - hydroxy - 2- naphthamides and their uses as cyan couplers. KONISHIROKU PHOTO INDUSTRY CO. Ltd. 22 Oct., 1969 [24 Oct., 1968], No. 51868/69. Heading C2C. [Also in Divisions C4 and G2] The -invention comprises the compounds of the general formula wherein R 1  is a hydrogen or a methyl group; R 2  is a hydrogen atom or an aliphatic hydrocarbon radical having 1-16 carbon atoms; R 3  is an aliphatic hydrocarbon radical having 1-18 carbon atoms; n is zero or 1; and X is a hydrogen atom, or a substituted or unsubstituted phenylazo group. These compounds may be prepared by reacting an amino acid with an appropriate naphthoic acid derivative and reacting the resulting intermediate as a potassium salt with an alkyl (of 1 to 18 carbon atoms) ester of an α-halogeno fatty acid. N-Dodecyloxycarbonyl - methoxycarbonylmethyl - 1 - hyhydroxy - 2 - naphthamide is prepared by the reaction of 1 - hydroxy - 2 - naphthoylglycine with dodecyl - α - chloroacetate at a temperature of 95-100 C. The intermediate 1-hydroxy-2- naphthoyl glycine is obtained by treating glycine withphenyl-1-hydroxy-2-naphthoate; while dodecyl-α-chloroacetate is obtained by reacting α-chloroacetic acid and dodecyl alcohol. As representative compounds of the above formula there may be mentioned N-[1-(dodecyloxycarbonylmethoxycarbonyl) - ethyl] - 1 - hydroxy - 2 - naphthamide; N - dodecyloxycarbonyl - methoxycarbonylmethyl - 1 - hydroxy-4- chloro - 2 - naphthamide; N - [1 - dodecylcarbonyl - methoxycarbonyl) - ethyl] - 1 - hydroxy - 4 - (2 - acetylphenylazo) - 2 - naphthamide; and N - [2 - (dodecyloxycarbonylmethoxycarbonyl) - ethyl] - 1 - hydroxy - 4 - (2- ethoxycarbonylphenylazo)-2-naphthamide.
Patent GB-1282374-A (GB)
Title: Amidophenylguanidines and their use as fungicides
Inventor: WIDDIG ARNO
IPC: C07C279/24
Filed: 1970-11-03
Abstract: 1282374 Amidophenylguanidines and their uses as fungicides FARBENFABRIKEN BAYER AG 3 Nov 1970 [6 Nov 1969 8 Jan 1970] 52217/70 Heading C2C The invention comprises compounds of formula wherein each X independently denotes a halogen atom or C 1-4  alkyl or alkoxy group; n denotes 0, 1 or 2; R denotes a hydrogen atom or C 1-4  alkyl; R<SP>1</SP> denotes C 1-12  alkyl; R<SP>11</SP> denotes a hydrogen atom, C 1-8  alkyl (which may be substituted by halogen, cyano, C 1-4  alkoxy, C 2-5  alkoxycarbonyl, phenoxy, halophenoxy, alkylphenoxy, alkoxyphenoxy); C 5-8  cycloalkyl; aralkyl (which may be substituted by halogen, C 1-4  alkyl or alkoxy group); aryl (which may be substituted by halogen, C 1-4  alkyl or alkoxy group) or 1-furyl group. These compounds may be obtained by treating 2-aminoaniline derivative of formula with an isothiourea ether of formula wherein X, n, R, R<SP>1</SP> and R<SP>11</SP> have the meaning stated above, and R<SP>111</SP> denotes a C 1-4  alkyl group, in the presence of a diluent. The compounds of the invention together with a solid or liquid diluent or carrier containing a surface-active agent are used as fungicidal agents.
Patent GB-1370807-A (GB)
Title: Signal amplifier provided with a protective circuit
IPC: H03F1/52
Filed: 1971-11-12
Abstract: 1370807 Protecting signal amplifiers PIONEER ELECTRONIC CORP 12 Nov 1971 [16 Nov 1970] 52769/71 Heading H3T [Also in Division H2] In a signal amplifier 1 provided with a protective circuit 2 for use in protecting the output stage of the amplifier and/or its load impedance from an abnormal condition represented by a difference in the form of the input signal and the output signal of the amplifier, the protective circuit includes a differential amplifier 21 arranged to produce an output control signal in response to a difference between signals applied to its inputs, an attenuation circuit 22 having an attenuation factor of the same magnitude as the amplification factor of the signal amplifier and a clipping circuit 24 for clipping an input signal at signal levels at which corresponding clipping would occur in the signal amplifier. The input of the clipping circuit 24 is connected to the signal input of the signal amplifier 1, the output of the clipping circuit is connected to one input of the differential amplifier 21, the input of the attenuation circuit 22 is connected to the output of the signal amplifier, and the output of the attenuation circuit is connected to the other input of the differential amplifier so that the differential amplifier responds to an abnormal condition without responding to clipping of the output signal of the signal amplifier. The input and output signals of the amplifier 1 are in phase and as the attenuation factor of an attenuator 22 is of the same magnitude as the amplification factor of the amplifier 1 the differential amplifier is operated in a balanced state. If the D.C. potential of the output L 2  varies due to some defect of the amplifier the differential amplifier 21 becomes unbalanced and operates a switching circuit 23 which opens contact Y to protect the loud-speakers SP. Similarly the amplifier 1 is protected against short circuit of the loudspeaker which would cause unbalance of the differential amplifier and opening of the contact Y. When the switching circuit is operated it returns to its unoperated state after a few seconds so that contact Y is again closed. If the differential amplifier is still in an unbalanced state the contact Y is opened again. When a large input signal is applied at L1 so as to cause a clipped output signal from the amplifier 1 at L2, the clipping circuit 24 operates to also clip the input signal to the differential amplifier 21 so that it retains its balanced state and the loud-speaker is driven. The protective circuit may operate to disconnect the power source.
Patent GB-1291884-A (GB)
Title: Improvements in gas-fired water heaters
IPC: F24H1/14
Filed: 1969-10-31
Abstract: 1291884 Instantaneous or circulation water heaters JUNKERS & CO GmbH 31 Oct 1969 [29 March 1969] 53355/69 Heading F4A A gas-fired instantaneous or circulation water heater has a casing comprising a rear wall 10 supporting water and gas regulating devices 11, 12 and a burner 13, at least one combustion chamber 14 with a heat exchanger 15, a draught diverter 16, a waste gas pipe support 17 and a front shell 18 of plastics coated metal sheet enclosing a ventilated space 19 having a minimum cross-sectional area defined at the base of the draught diverter at least 1À2 times the cross-sectional area of the waste gas pipe. Apertures are provided in the front shell 18 for a temperature selection knob 111, a gas control knob 121 and an inspection hole for inspection of the burner 13 and a pilot burner in heaters without automatic ignition. The shell 18 is formed from Sendzinier galvanized sheet steel and coated by application of a plastics lacquer or a plastics powder or paste. The space 19 produces a chimney effect cooling the waste gases and preventing discoloration of the plastic coating.