baber/WOPTO huggingface dataset:
Patent GB-407832-A (GB)
Title: Improvements in and relating to apparatus for projecting light
IPC: F21S8/12
Filed: 1933-04-10
Abstract: 407,832. Light-projectors. CUMMINS, C. P. COOTE-, 1, Hargreaves Road, Sefton Park, Liverpool. April 10, 1933, No. 10682. [Classes 75 (ii) and 75 (iv).] Lenses.-A light-projector, for use as a vehicle or personal headlamp, microscope lamp, or spotlight, comprises a light source 8 enclosed in a reflecting container having a back reflecting part 1, a front reflecting part 2 with a small aperture 3, a rear non-reflecting portion 7 and an opaque non-reflecting screen 9 between the light source 8 and the aperture 3, the arrangement being such that only diverging rays are projected, and a lens 6 or system of lenses carried by a tube or support 4 in front of the aperture 3, the inside surface of the tube or support being non-reflecting. The lens or lens system projects a beam of diverging rays. The rear reflector 1 is paraboloidal, ellipsoidal, spheroidal, or of other shape. The front reflector is plane or tapering. In the latter case, its front part may be conical and it is curved at the rear to meet the reflector 1. The projector may in addition have, as shown, a half double convex lens 5 fixed in front of, or behind, the upper half of the lens 6 so as to project the upper half of the beam downwardly, and an aperture in the lower part of the lens tube 4, to allow light to fall close in front of the projector. The aperture 3 may be D-shaped, with the lower edge of the aperture horizontal. If desired, the front reflector, lens carrier, and lenses are formed as a unit attachable to an existing lamp.
Patent GB-277722-A (GB)
Title: Improvements in and relating to the treatment of cellulosic materials
IPC: D01F2/00
Filed: 1926-04-23
Abstract: 277,722. Kershaw, W., Barrett, F. L., and Bleachers Association, Ltd. April 23, 1926. Preparatory treatment of cellulose.-Cellulosic materials, such as low-grade cotton-waste, cotton flocks, linters &c. are boiled with caustic alkali solution with or without pressure, bleached with a hypochlorite liquor, and then boiled with caustic alkali, the product being suitable for conversion into cellulose derivatives such as viscose, cuprammonia, cellulose nitrate, and other cellulose esters giving solutions of low viscosity. In an example, cotton flocks are boiled with 3-5 per cent caustic soda under 40-50 lbs. pressure, rinsed, bleached with calcium hypochlorite solution of ¢ to 1‹ Tw. at 20-50‹ C., and boiled with. 1-5 per cent caustic soda at 10-80 Ibs. pressure and is then washed and dried, though a final bleaching treatment may be added if desired.
Patent GB-161577-A (GB)
Title: Switch arrangement for the sending and receiving of electrical oscillations, especially those of low frequency
IPC: H04B3/54
Filed: 1921-04-12
Abstract: 161,577. Huth Ges., Dr. E. F. April 12, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermionic amplifiers.-In a, system of telephony especially for domestic use or for transmission over short distances, power lines supply plate current for a thermionic amplifier and also carry the signal currents. In an example, Fig. 1, one power line is connected to the cathode 4 of a valve and the other through a switch 7 either direct or through the primary of the receiving transformer to the anode 8. The grid 13 is connected through the switch 12 to a shunt circuit across the power wires comprising the condensers 9, 10, or through the secondary 14 of the transmitting transformer to the cathode. The condensers 9, 10 can both be variable to adjust the sensitiveness of the tube. In a further example, Fig. 3, one of the condensers in the shunt circuit is replaced by the choke coil 20 provided with a secondary winding 21, and the change-over switches are omitted. A switch 22 is provided to short circuit the receiving transformer during transmitting. Arrangements shown in dotted lines may be provided for using current from the power wires for heating the filament and supplying the microphone 16. These comprise a large inductance 23, which may be omitted, and a variable resistance 24.
Patent GB-1358171-A (GB)
Title: Cleaning pad
IPC: A47L1/15
Filed: 1971-04-22
Abstract: 1358171 Cleaning pads L H STEVENS 21 April 1972 [22 April 1971] 10753/71 Heading A4F A cleaning pad, e.g. for wiping windows or car bodies, comprises a single piece of sponge like material accommodated in a closed bag of permeable flexible sheet material of dimensions such that the sponge-like material is partially compressed, the bag being formed at least partially of chamois leather so that at least one face of the pad is covered by the chamois leather which is perforated at intervals to enhance its permeability. The sponge-like material is preferably of foamed synthetic plastics, but may be of sponge rubber or natural sponge.
Patent GB-278029-A (GB)
Title: Improvements in jacquard machines used in looms for weaving
IPC: D03C3/24
Filed: 1926-04-24
Abstract: 278,029. Lightbown, W., and Hacking & Co., Ltd. April 24, 1926. Jacquards for weaving figured terry fabrics. The griffes are operated by multiple cams each consisting of two coaxially mounted portions p<1>, p<2> having staggered risers a and one or more depressions b so as to give three or more picks to each card. A cam for three-pick terry fabric is shown, A indicating the portion where the card cylinder changes, whilst 1 and 3 indicate the positions where the face pile ends are raised and the back pile ends depressed, and 2 indicates the position where the face pile ends are depressed and the back pile ends raised. A cam for a fourpick terry fabric is also described.
Patent GB-254441-A (GB)
Title: Improvements in calico printing
IPC: B41F17/00
Filed: 1925-04-27
Abstract: 254,441. Crompton, A. April 27, 1925. Printing processes and apparatus. - Textile fabrics are printed by passing them between an uninked printing-roller A formed with the design in relief, and a co-operating pressure roller B furnished with ink or colour by means such as a roller or a band E passing round a roller C in engagement with a roller partly immersed in a colour trough. Reference has been directed by the Comptroller to Specifications 326/11 and 134,284.
Patent GB-446041-A (GB)
Title: Improvements in the manufacture and production of halogenated ethers
IPC: C07C43/174
Filed: 1935-04-09
Abstract: Halogenated ethers are obtained by acting on aliphatic olefinic hydrocarbons with mixtures of aldehydes with alcohols and hydrogen halides, if desired in the presence of an anhydrous metal halide, such as mercury or zinc chloride, as a catalyst.  According to examples: (1) trimethylethylene is shaken with a mixture of benzaldehyde, hydrogen chloride, methanol and mercuric chloride, 1-phenyl-1-methoxy-2.3-dimethyl-3-chlorbutane being obtained; (2) liquified butadiene is shaken with a mixture of benzaldehyde, hydrogen chloride, methanol and mercuric chloride, 1-phenyl-1-methoxy-5-chlorpentene-3 being obtained; (3) dihydrobenzene is shaken with a mixture of benzaldehyde, hydrogen chloride, methanol and mercuric chloride, methoxy - benzyl - chlor - cyclohexene being obtained.  Mixtures of para-formaldehyde with methanol and hydrogen chloride and mixtures of acetaldehyde with ethanol and hydrogen chloride may also be used.  Specifications 423,520 and 446,222 are referred to.  The Specification as open to inspection under Sect. 91 comprises also the use of mixtures of formaldehyde with dodecyl alcohol and hydrogen chloride and the subject-matter of Specification 446,222 together with the employment of compounds not containing conjugated olefinic double bonds, e.g. trimethylethylene and cyclohexene in the process of that Specification.  This subject-matter does not appear in the Specification as accepted.
Patent GB-614175-A (GB)
Title: Improvements in devices for removing articles or work, particularly lenses, from holders or supports to which they have been adhesively secured
IPC: B24B13/005
Filed: 1946-04-09
Abstract: 614,175. Grinding lenses &c. ABBEY, A. !(American Optical Co.). April 9, 1946, No. 10935. [Class 60] [Also in Group XIII] Apparatus for unblocking lenses 9 or other work by chilling from the blocks or holders 8 to which they are adhesively secured by pitch &c. for grinding, comprises a solenoid-operated valve 29 adapted to be opened for a predetermined time by a time-controlled switch 39 to supply liquid CO 2  from a pipe 24 to a hood 17 surrounding the lens and block. A support 4 carries an upright bearing member 5 supporting slidably a bar 6 with a holder 7 for the lens block 8; a hand or foot operated member 11 enables the bar to be depressed for insertion of a blocker lens, and on release a spring 12 raises the holder into the hood 17. The needle valve 29 is pressed downwards to close the aperture 28 by a spring 31 and is raised by the plunger 30 of the solenoid 35. Grooves 33 in the plunger allow the CO 2  to pass.
Patent GB-1276493-A (GB)
Title: Article-handling apparatus
Inventor: MCCOMBIE ALAN KEITH
IPC: A24C5/35
Filed: 1968-05-10
Abstract: 1276493 Conveying cigarettes MOLINS MACHINE CO Ltd 9 May 1969 [10 May 1968 20 Feb 1969] 22018/69 and 10941/69 Divided out of 1276492 Heading B8A A conveyer system for conveying cigarettes and other rod-like articles in tack formation in relation to which the articles lie transversely, includes two substantially horizontal conveyers 14, 15 extending in opposite directions from a junction zone above which is arranged a sensor mechanism comprising two sensor members 12, 13, which are arranged to rest on the articles in positions lying respectively approximately above the ends of the two conveyers, and including a conveyer speed-regulating mechanism 35 which controls the speed of one of the conveyers (as shown 14) and is coupled to each sensor member 12, 13 by a lost-motion device so that the speedregulating mechanism 35 can be moved in one predetermined direction as a result of movement of either one of the sensor members while the other sensor member remains stationary. As shown, the predetermined direction corresponds to downward movement of either of the sensor members. The latter are slotted and intermesh with one another. They also intermesh with stationary members 38, 39 to prevent any articles from escaping. A further embodiment (Fig. 3, not shown) is identical to that described with reference to Fig. 3 of the Specification 1,276,492.
Patent GB-698675-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J19/30
Filed: 1950-05-03
Abstract: 698,675. Electrode materials and processing. M-0 VALVE CO., Ltd., and WRIGHT, D. A. May 2, 1951 [May 3, 1950], No. 10944/50. Class 39(i) In a thermionic valve, the anode which forms part of, or is sealed through, the envelope is coated on that part which is likely to be bombarded by electrons with gold. A copper anode may have an intermediate layer of nickel or rhodium or the copper may alloy with the gold during processing. Specification 646,015 is referred to.
Patent GB-1105860-A (GB)
Title: Sound and optical effects toy
IPC: A63F9/02
Filed: 1966-03-14
Abstract: 1,105,860. Sound and optical effects toy. MATTEL Inc. 14 March, 1966 [22 Oct., 1965], No. 11032/66. Heading A6S. A toy comprises means for superimposing a programmed visual display on a real scene and producing a synchronised sound characteristic of the visual display. The toy is described in the form of a gun. The user looks down the gunsight 32 and tube 12 at the real scene. Ambient light passes through a translucent screen 124 and is directed by concave mirror 126 through arcuate colour patterns 36a-36f and openings 38a-38c onto slot 120. It then passes through a kaleidescope produced by two mirrors 128 and thence onto a half-silvered mirror 128 which reflects the light to the user. The sound effect is produced by a needle 226 on a record 136, a frusto-conical roller behind the record taking the force of the needle and enabling a light flexible material to be used for the record, the speed of which is controlled by governor 192. To simulate firing of the gun, regularly spaced slots in the barrel 14 of the gun, show a plurality of red marks on a sliding rotating tube 90 maintained therein and connected to the drive mechanism. The gun is operated by spring 212, wound by a handle 158 connected to a gear train. To operate the gun trigger 244 is pulled. This pulls the connecting rod 80 in a direction opposite to arrow 68 (Fig. 12 not shown) and slides link 55 along slot 50 so that patterns 36b, 36d and 36f are positioned opposite windows 38a, 38b and 38c respectively. The motion of these patterns past the slot 120 produces the effect of the colour first filling the whole eyepiece and then decreasing in size to a small central area on the real scene. This effect is accompanied by a synchronised vibrational sound which rises to a crescendo as the coloured area decreases to a minimum. At the same time the sliding tube 90 moves inside the gun barrel 14 to produce red "flashes" at the slots 118. This effect occurs three times and takes about four seconds. The flashing from the barrel then stops and a crashing noise is emitted from the record. The pulling device 80 disconnects from the main spring and spring 70 which is in tension starts to return the sliding member 40. To control the speed of return, sinusoidal slot 62 is provided and the combination of weight 66 and pin 58 in the slot acts as a brake. Link 55 slides back along slot 50 and position patterns 36a. 36c and 36e in front of the windows 38a, 38b and 38c respectively. These patterns have rough edges so that as the sliding member 40 passes the slot 120, the effect seen in eyepiece 32 is of an explosion ring with jagged edges exploding from the object at which the gun is pointed. This motion is again accompanied by suitable sounds of expansion after an explosion produced by the record. The toy may be adapted to produce the effect of shells or a ray such as a "lazer beam".
Patent GB-1220441-A (GB)
Title: Improvements in or relating to isotopic enrichment of uranium
Inventor: JAMRACK WILLIAM DOUGLAS
IPC: B01D59/24
Filed: 1957-04-04
Abstract: 1,220,441. Separating uranium isotopes. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 1 April, 1958 [4 April, 1957], No. 11081/57. Heading C1A. Isotopic enrichment of uranium is effected by contacting a uranium-containing solution in a large number of stages with a substantially immiscible solvent which is such that the distribution of one uranium isotope between the solution and the solvent is different from that of another isotope. For example to obtain fractions enriched in U235 and U238, an aqueous solution of uranyl nitrate is treated with methyl isobutyl ketone or dibutoxy di-ethylene glycol. In a continuous process the ratio of flow rates of solvent and solution may be substantially equal to the equilibrium ratio of solute concentrations in the solution and solvent. Series of mixersettler extraction stages may be connected in cascade and the solution and/or solvent concentrated between series of stages. In an alternative process, both the solvent and the solution contain uranium and the flow rates are adjusted so that there is no appreciable net transfer of uranium. Uranium may be removed from the outgoing solutions and returned with the ingoing solvent at the same end of the series. An improved separation is sometimes obtained by making the time of contact in each stage less than that required to reach equilibrium.
Patent GB-541796-A (GB)
Title: Improvements in high frequency relay systems
IPC: H01Q1/52
Filed: 1940-07-01
Abstract: 541.796. Wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 1, 1940, No. 11116. Convention date, June 30, 1939. [Class 40 (v)] In a high frequency relay system in which short wave signals are received by :an antenna 1. amplified without change of frequency at 5 and retransmitted from an antenna 3, the reflectors 2, 4 are arranged so that energy fed back from 3 to 1 by certain paths such as 12 is neutralized by energy fed back over other paths such as 13. This may be done by cutting back the reflector 4 as at 9 by a distance equal to a quarter wavelength or both reflectors may be cut back by one eighth of a wavelength. The Specification as open to inspection under Sect. 91, describes a modification, Figs. 3 and 4 (Cancelled, not shown), in which interference betwen the transmitting and receiving antenna is prevented by forming the edges of the reflectors with baffles one wavelength or more in extent. This subject-mater does not appear in the Specification as accepted.
Patent GB-819127-A (GB)
Title: Herbicidal amine salts of chlorobenzoic acids
Inventor: SCHNEIDER ALAN WALTER
IPC: C07C63/70
Filed: 1958-04-09
Abstract: The invention comprises compounds of the general formula <FORM:0819127/IV (b)/1> where n is 1-5, R1 is C1 or C2 alkyl which may be substituted with an amino group, or C2-C4 branched or straight chain alkanol radical, and R2 and R3 which may be the same or different are hydrogen or as R1.  The compounds of the invention may be prepared by reacting an amine of formula N-N1R2R3 with <FORM:0819127/IV (b)/2> at ambient temperature to 49 DEG  C., at atmospheric pressure.  The amine is preferably slowly added to a slurry of the acid in water, and the mixture held at the reaction temperature until the pH of the solution is 6.5-7.5.  Small increments of acid or amine may be added if the pH of the solution does not fall within this range after an hour.  Mixtures of polychlorobenzoic acids may be used as starting materials, e.g. mixtures of 2,5-dichloro; 2,3,5; 2,3,6; 2,4,5; trichloro, 2,3,4,5; and 2,3,5,6; tetrachloro, and pentachloro benzoic acids.  Amines specified as starting materials are mono-, di- and trimethyl and -ethyl amines, mono-, di- and tri-ethanol and propanol amines, N,N-dimethyl ethanol amine, N,N-diethyl ethanol amine; N-aminoethyl ethanol amine, N,N-dimethyl propanol amine, 2-amino butanol-1, and mixtures thereof.  Examples are given.ALSO:The invention comprises herbicidal compositions containing compounds of general formula <FORM:0819127/VI/1> where n is 1-5, R1 is C1 or C2 alkyl which may be substituted with an amino group, or C2-C4 branched or straight chain alkanol radical and R2 and R3 which may be the same or different are hydrogen or as R1. Polychlorobenzoic acids specified are 2,5-dichloro, 2,3,5; 2,3,6; 2,4,5; trichloro, 2,3,4,5; and 2,3,5,6; tetrachloro and pentachloro benzoic acids and mixtures thereof. Amines specified are mono-, di- and tri-ethanol and propanolamines, N,N-dimethyl ethanol amine, N,N-diethyl ethanol amine, N-aminoethyl ethanol amine, N,N-dimethyl propanol amine, 2-amino butanol-1 and mixtures thereof.  Suitable carriers for the above compounds are sequestering agents such as water-soluble salts of citric acid and ethylene diamine tetra-acetic acid or mixtures thereof, preferably in an amount of 0.1 to 2.0 per cent by weight of the composition.
Patent GB-1147135-A (GB)
Title: Improvements in electrophotographic plate
IPC: G03G5/087
Filed: 1967-03-10
Abstract: 1,147,135. Electrophotography. GENERAL ELECTRIC CO. 10 March, 1967 [25 April, 1966], No. 11323/67. Addition to 1,039,245. Heading H1K. An electrophotographic plate sensitive to X-rays is made by firing orthorhombic PbO, mixing the fired oxide with an insulating binder, coating a conductive member with the mixture and heating the coated member, all these operations being carried out in a dry atmosphere. The oxide has a purity of more than 99À9% and a particulate size less than 10Á. The binder may be polystyrene, polyvinyl acetate, P.V.C., alkyd resin, polyphenylene oxide or polybutyl methacrylate whilst the conductive member may be Al, Cu, Ni, Zn, brass, stainless steel, paper, conductively coated cellulose acetate, polystyrene or polyethylene terephthalate or glass coated with SnO, Al or In 2 O 3 . A coating of paraffin wax may be applied to the plate to give a hard surface, alternatively an opaque coating may be applied to the plate to exclude visible light. The oxide is fired in an inert atmosphere at 300-600 C. or in a dry air at 100-300 C. or 500-700 C. thereby introducing O 2  to provide P-type conduction.
Patent GB-407833-A (GB)
Title: Improvements in a shoe construction
IPC: A43B9/06
Filed: 1933-04-18
Abstract: 407,833. Boots and shoes. FLORSHEIM SHOE CO., 541, West Adams Street, Chicago, U.S.A. April 18, 1933, No. 11337. Convention date, Dec. 14, 1932. [Class 17 (ii).] Connecting uppers to insoles and soles.- The upper surface of the insole is formed with a rabbet 8 at its margin the edge 9 being undercut. A channel 3 is cut leaving a lip 6 which is notched in the neighbourhood of the heel breast. The upper 13 and welt 15 are then stitched to the insole and the welt turned down so that its lower surface lies below the plane of the insole.. The margin 10 of the insole, the edge of the upper and lip 6 are then trimmed flush with the lower surface of the welt, a waterproof filling 20 is inserted and the outsole secured as usual. The construction provides an insole which will not curl or wrinkle at its edge.
Patent GB-949470-A (GB)
Title: Stereophonic radio receivers
IPC: H04H20/88
Filed: 1960-03-31
Abstract: 949,470. Stereophonic radio systems. PHILCO CORPORATION. March 31, 1960 [April 9, 1959], No. 11379/60. Heading H4L. A stereophonic radio receiver for a wave which is amplitude modulated by the sum A+B of the two information signals and phase modulated by the difference A - B of the two information signals comprises means for providing first and second detected signals varying in amplitude in the same sense in response to the amplitude modulation and varying in amplitude in opposite senses in response to the phase modulation and means for combining said detected signals to provide two outputs representing the respective information signals. As shown, the incoming signal after frequency-changing is supplied to I.F. stages 72, 74 having output stages 76, 80, tuned respectively below and above the centre frequency of the incoming signal so that the arrangement will act as a frequency discriminator. Diodes 84, 88 act as amplitude detectors for the A+B amplitude modulation signal and produce corresponding signals across the loads 86, 90 which have the same polarity with respect to earth. Considering the phase modulation as a frequency modulation of the carrier by a signal equivalent to the time derivative of the A - B signal, this demodulated signal will appear across the loads 86, 90 in opposite phase. The signals across the loads 86, 90 are supplied to the respective control grids of a differential amplifier 94, 96. Since the A+B signals are in phase they are added in the common cathode resistors 98, 100, but the A - B signals cause the anode-cathode currents of the valves 94, 96 to change in opposite directions so that their effect is balanced out in the cathode resistors and the A - B audio signals appearing across load resistors 102, 104 will be in opposite phase. The signals across capacitors 122 and 126 are proportional to the integral of the frequency component and thus are proportional to the A - B phase modulation component, but are in opposite phase. The potentiometers 102, 104 are adjusted so that the B component is equal to that appearing across resistor 100 and thus the signal appearing at output terminal 20 will be the A signal and that at output 22 will be the B signal. In modifications, cross-talk due to any difference between the average frequency of the incoming carrier and the cross-over frequency of the discriminator is minimized by deriving a control voltage having an amplitude which is dependent on this difference to control the frequency of the local oscillator or alternatively to change the cross-over frequency of the discriminator. Specification 947,306 is referred to.