baber/WOPTO huggingface dataset:
Patent GB-286251-A (GB)
Title: Improvements in and relating to apparatus for the mechanical bending of wood
IPC: B27H1/00
Filed: 1928-02-28
Abstract: 286,251. K³hne, H. March 1, 1927, [Convention date]. Bending.-Woodan bars to be bent are passed through a steaming chamber 32 and delivered in front of a reciprocating ram 27<1> which pushes them through a channel 2 of progressively varying cross-section, produced by means of suitablyshaped walls 3 or ribs 8, to effect the required deformation. The bent bars leaving the channel 2 are pushed into or through a retaining passage 9, with or without the help of chains or belts 22, to which passage hot air may be supplied to dry the bent wood. In a modified device, the channel 2 is omitted and the bars are bent over a. former 26 by a vertically reciprocating ram 24 before being pushed into the passage 9. In the Specification as open to inspection under Sect. 91 (3) (a) other forms of the steaming, bending, and drying apparatus are shown. This subject-matter does not appear in the Specification as accepted.
Patent GB-751515-A (GB)
Title: Lubricating oil compositions and process for the preparation thereof
Filed: 1954-03-03
Abstract: A lubricating oil composition comprises a major proportion of a mineral lubricating oil and 0.001 to 0.01 per cent by weight of a sodium compound of a mono- or polyhydric phenol substituted in the nucleus by at least one hydrocarbon group containing 8 or more carbon atoms.  The hydrocarbon group may be branched or unbranched alkyl groups or aralkyl, alkaryl aryl or alicyclic groups.  The nucleus may also be substituted with hydrocarbon groups containing less than 8 carbon atoms, or with halogen atoms, esterified or etherized hydroxyl groups or the -COONa group. Examples of sodium phenolates used are sodium dodecyl phenolate, sodium cetyl phenolate, sodium didodecyl phenolate, sodium dodecyl cresylate, sodium phenylbutyl phenolate, and sodium compound of a phenol obtained by alkylating phenol with a mixture of C14-C18 alkenes obtained by cracking solid paraffin hydrocarbons.  The phenolate may be dissolved in the oil or the free phenol may be dissolved in the oil and reacted with sodium hydroxide to form the sodium compound, a low-boiling hydrocarbon, such as benzene, being added to promote the conversion and to remove the water formed, an azeotropic mixture being distilled off. Concentrates of phenolate in oil may be added to the oil to obtain the desired phenolate content.  The lubricating oil is preferably a distillate refined by extraction with a selective solvent such as sulphur dioxide, furfural or nitrobenzene. Specification 537,816 is referred to.
Patent GB-690590-A (GB)
Title: Improvements in or relating to electric signal amplifier systems
IPC: H04J1/10
Filed: 1951-03-16
Abstract: 690,590. Multiplex pulse signalling; valve gating circuits. STANDARD TELEPHONES & CABLES, Ltd. March 16, 1951 [March 17, 1950], No. 6367/51. Classes 40 (v) and 40 (vi). In a system in which an amplifier is switched alternately to amplify signals passing in both directions between two circuits along a channel, means are provided to neutralize the effect of signals persisting in either of the circuits after the reception interval has ended. In one embodiment, the amplifier 50 is alternately connected between circuits 30 and 31 and circuits 31 and 30 by the switching voltage produced by a multivibrator 33. The terminals 34, 35 of the latter are alternately raised to a positive potential. When terminal 34 is positive, the pairs of rectifiers 42, 43 and 46, 47 are rendered conducting, so that the output of amplifier 50 is fed through condenser 52 and rectifiers 46, 47 to circuit 30 and its input is connected to circuit 31 through rectifiers 42, 43, condenser 51 and valve 48. When the other pairs of rectifiers are rendered conducting, circuit 30 feeds circuit 31 through the amplifier 50. The rectifiers are biased by batteries connected between earth and the points 36, 37, 38, 39, at which the pairs of rectifiers are connected together..To avoid cross-talk between a pulse passing from circuit 30 to circuit 31 and vice versa, and the residue of the preceding pulse passing in the opposite direction, each pulse from the amplifier is fed to a circuit 53 where its amplitude is appropriately changed and then through a delay circuit 54 to be subtracted from the succeeding pulse applied to the amplifier. For this purpose it is fed to valve 49, the common output circuit of valves 48, 49 being arranged to produce a pulse proportional to the difference in the inputs to the two valves. Two circuits such as 53, 54 may be provided, Fig. 3 (not shown), but with different delay times, so as to compensate also for pulses persisting for three times the period of the delay circuit 54. The system may be used for the transmission of multiplex pulse trains.
Patent GB-1501123-A (GB)
Title: Acoustic surface wave devices having performance versus temperature characteristics
IPC: H03B5/30
Filed: 1975-02-14
Abstract: 1501123 Surface wave delay lines HEWLETTPACKARD CO 14 Feb 1975 [24 June 1974] 6409/75 Heading H3U A surface wave delay line comprises a plurality of delay paths on a single substrate, the paths being arranged on surface regions having different crystallographic orientations so as to extend the substantially constant portion of the phase shift against ambient temperature characteristic. The delay line may be used in the feed back loop of an amplifier to provide a frequency-stable oscillator. In a first embodiment, Fig. 5, the delay path formed by interdigital transducers 52a, 52b on surface 11 is coupled via intermediate amplifier 55 to a delay path formed by transducers 54a, 54b on surface 13, amplifier 56 being the oscillator amplifier. Alternatively the delay paths may be coupled via a curved end face of the substrate (Fig. 6, not shown). In a final embodiment, Fig. 7, three delay paths on relatively inclined surfaces 71, 72, 73 are cascaded via intermediate amplifiers 77, 79. In a modification these amplifiers may be omitted and direct connections made between transducers 74A and 76A, and 76B and 78B. Also, it is envisaged that surfaces 71, 72, 73 might be combined into a single curved surface.
Patent GB-1108272-A (GB)
Title: Coating composition and process of preparing the same
IPC: C09D155/02
Filed: 1966-02-14
Abstract: A coating composition comprises an acrylonitrile-butadiene -styrene resin, a solvent and a non-solvent diluent which is compatible with the solvent.  The resins may be terpolymers or mixtures of copolymers with a homopolymer of the third component, or mixtures of the homopolymers or mixtures of the terpolymer with one of the copolymers or homopolymers and copolymers of four or more monomers such as an ABS-alpha-methyl styrene (or -methyl-methacrylate) graft polymers. They may also contain further polymers, e.g. ABS blended with an alpha-methyl styrene and the ABS components may be replaced wholly or partially by their homologues.  The preferred compositions contain 10-30% A, 20-60% B and 30-70% S.  The solvent may be methyl ethyl ketone, methyl isobutyl ketone or ethylene dichloride, a mixture of methyl ethylene ketone and ethylene dichloride being particularly preferred.  Diluents specified are butanol, toluene or lacquer thinner.ALSO:Coating compositions comprising an acrylonitrile-butadiene-styrene resin, a solvent and a non-solvent diluent which is compatible with the solvent are used as anti-corrosive coatings on metallic materials and for the water-proofing and moisture-proofing of materials.  The applied compositions may be baked.  The compositions are preferably applied on top of an undercoat preferably containing a mixture of a thermosetting resin such as an epoxy resin, a polyester or a polyurethane curable at normal temperature and an acrylonitrile-butadiene-styrene resin, and acrylonitrile type resin, a butadiene type resin, a styrene type resin, an acrylate type resin or a methacrylate type resin or a mixture of two or more thereof. Especially preferred are undercoat paints containing a mixture of a thermosetting resin curable at normal temperature and an ABS resin, or even more preferably a thermosetting resin on an amount of a coating composition of the invention.  In examples a steel plate is coated with an ABS resin dissolved in a mixture of methyl ethyl ketone and ethylene dichloride (50:50) and as a non-solvent 2(B) toluene, 4(A) lacquer thinner, 4(E) toluene and 4(-) butanol.  In Example 5 a steel plate is undercoated with an ABS resin dissolved in methyl isobutyl-ketone/diacetone alcohol containing toluene and also clay, styrene monomer, red lead and dimethyl phthalate followed by a top coat containing the same ABS resin in the ketone/alcohol/toluene mixture together with dimethyl phthalate.
Patent GB-359852-A (GB)
Title: Improvements in or relating to impulse transmitters for use in telephone or like systems
IPC: H04M1/32
Filed: 1931-03-02
Abstract: 359,852. Impulse transmitters. TELEPHON - APPARAT - FABRIK E. ZWIETUSCH & CO., GES., 6, Salzufer, Charlottenburg, Berlin. March 2, 1931, No. 6469. Convention date, July 7, 1930. [Class 40 (iv).] In a dial-type transmitter, the impulse springs are short-circuited or disconnected unless the return movement takes place at the normal speed, so that the dial cannot be used to effect release at a prepayment station. As shown, members 3 carried by the governor shaft and coupled by a spring swing outwardly under centrifugal force, and, provided the normal speed is attained, act on a contact spring 7 surrounding the shaft to remove a shortcircuit from the impulse springs.
Patent GB-496355-A (GB)
Title: Improvements in hair curlers
IPC: A45D2/28
Filed: 1938-03-01
Abstract: 496,355. Hair-curlers. DELAMERE CO., Inc. March 1, 1938, No. 6482. Convention date, Dec. 28, 1937. [Class 131] In a hair-curler of the type shown in Fig. 2, the ends 17 of the swingable loop 14 are offset with respect to the portions 15 and are surrounded by a split sleeve 19. Eyes 12 may be used to connect the parts 11, 10 pivotally together.
Patent GB-537728-A (GB)
Title: Improved closure for jars and like containers
IPC: B65D45/28
Filed: 1940-04-10
Abstract: 537,728. Hermetic closures for containers. FARISH, T. G. April 10, 1940, No. 6502. [Class 125 (iii)] To enable jam jars and the like to be employed for bottling fruits each is provided with a dished cap a of tin plate or like material having a flange a<SP>1</SP> at the top of its tapered side and carrying a sealing ring b of rubber. The cap is held in place during heating operations by a spring clamp c with U- shaped ends c' to engage the lip on the jar mouth. After the jar has cooled the clamp can be removed for re-use as the cap is held by air pressure. The central port of the clamp may be dished transversely.
Patent GB-766777-A (GB)
Title: Improvements in or relating to apparatus for capping vials and like containers
Inventor: BAKER-CARR EDGAR DAVID STANLEY
IPC: B65B7/28
Filed: 1954-03-05
Abstract: 766,777. Closuring containers. GLAXO LABORATORIES, Ltd. Feb. 16, 1955 [March 5, 1954], No. 6531/54. Class 125(2). In apparatus for applying adhesive backed foil sealing discs described in Specification 744,249 to the necks of vials &c. by the method described in Specification 748,843, the means which applies heat and pressure to the disc is so mounted that the heat-applying surface thereof is free to accommodate itself to the plane of the upper surface of the vial neck even though said plane be not strictly horizontal. The mounting may be a universal joint, a ball and socket, or a spring or, as in the embodiment described, may allow lateral vertical and longitudinal movement of the means. Vials are supplied between guides 5 on a table 2 to a station 43 one at a time. From station 43 the vial is transferred by a pusher 44 to a station 6 located beneath a punch 32. The vial, when in position, actuates a switch 57 which causes fluid pressure to be applied to a cylinder 38 to lower a plunger 37. This hits the punch 32 which cuts out an adhesive backed foil disc from strip material 10 and lightly presses it on to the vial neck whereupon the punch is raised by spring 34. Pusher 63 then transfers the vial to station 61 from which the previous vial is pushed to station 62, A third pusher 72 then moves the vials from stations 61, 62 to stations 7 each disposed beneath a pad 87 provided on an electric heater 85, the pad being loosely mounted in a supporting frame 82 so that it can rest evenly on the top surface of the neck of the vial. The frame 82 is then lowered so that the disc is heated and pressed on to the vial. The frame 82 is-then raised again and, when pusher 72 is next reciprocated, the succeeding pair of vials pushes the vials from positions 7 to positions 8 where, during the next cycle, the discs are subjected to pressure from a pad 81 also carried by frame 82. Pad 81 covers four vials. The various pushers and the strip feed are driven in the proper time sequence from a single shaft 27 driven by an electric motor. The strip 10 is sterilized by ultra-violet light from lamp 12 before entering the punch mechanism. The various operations may be performed while the vials are being carried in an arcuate path.
Patent GB-1118123-A (GB)
Title: Pneumatic dispatch system
Inventor: COOK GEORGE R
IPC: B65G51/06
Filed: 1966-02-15
Abstract: 1,118,123. Pneumatic despatch apparatus. COOKTON PNEUMATICS Inc. 15 Feb., 1966, No. 6552/66. Heading B8A. A carrier for a pneumatic conveying system comprises a cylindrical container 13 formed with spaced annular grooves 29, having a parallelogram-shaped cross-section, providing spaced annular fins 31 the outside diameter of which is less than the inside diameter of the conveyer tubes (11, 12), Fig. 1 (not shown). There being substantially no seal between the carrier and the conveyer tubes, the carrier is conveyed by the aerodynamic effect of contacting air flowing through the tubes. Recesses 34, 35 are formed in the fins 31 and in a nose section 25 to assist in positioning the carrier concentrically with respect to the conveyer tubes. A detachable closure plug 26 is provided with an eyelet 27 for supporting it on a rack or for holding objects to be carried outside the carrier. The conveyer system, Fig. 1 (not shown), consists of a blower (18) connected between the conveyer tubes (11, 12) at a station (A). A sensor (39) in a U-bend at a station (B) is provided to out off the power supply to the blower on the passage of a carrier.
Patent GB-233483-A (GB)
Title: An improvement in or in connection with the groundropes of trawl nets
IPC: A01K75/06
Filed: 1924-03-14
Abstract: 233,483. Loncaster, J. W. March 14, 1924. Trawling-gear.-The shackles D, D<1>, Fig. 1, connecting the sections A, A<1> of the ground-rope of a trawl net are enclosed in a sleeve E which is held in position by cross-pins F, F<1> passing through the shackles, and is intended to serve the purpose of protecting the spliced eyes a, a<1> of the ground-rope sections from being frayed by the rollers B, B<1> and also of preventing wear of the eves of the rollers bv rubbing on the shackles. The sleeve is formed with flanges e<1>, e<2> at its ends and with reinforcing annular flanges e<3>, e<4> and bosses e, and provides an attachment for an additional lashing G for the balch line of the net. In a modification, Fig. 3, the shackles are dispensed with and the eyes a, a<1> of the ground-rope sections are directly engaged by separate cross-pins F, F', or a single pin may pass through both the eyes, which are overlapped inside the sleeve E.
Patent GB-1089029-A (GB)
Title: Process for preparing bis-quaternary ammonium sulfates
Filed: 1966-02-15
Abstract: Bis-quaternary-ammonium sulphate salts are obtained by reacting a dialkyl sulphate ester and a trialkylamine at 50-400 DEG  C. for 0.25 to 3 hours under sufficient pressure to prevent evaporation of said trialkylamine.  The amine is generally employed in a stoichiometric excess and an inert solvent may be present.  The reaction may be effected as a continuous process or it may be effected in two stages, i.e. in a first reaction stage at about 0-50 DEG  C. in which the mono-quaternary ammonium salt is formed and a second stage at 50-400 DEG  C. in which a second quaternary ammonium group is formed. Specified products are bis-tetramethyl-, bis-triethylmethyl-, bis-tetraethyl, bis-trimethyl-ethyl- and bis-tetrapropyl-ammonium sulphates. Trimethyl ammonium tetramethyl ammonium sulphate and tetramethyl ammonium methyl sulphate are also produced in examples in small quantities.
Patent GB-954267-A (GB)
Title: Means for installing a heating appliance
Inventor: WATTS HERBERT
IPC: F24C3/04
Filed: 1962-02-21
Abstract: 954,267. Means for installing heating appliances. RADIATION Ltd. Jan. 17, 1963 [Feb. 21, 1962], No. 6684/62. Heading F4W. A heating appliance comprises a back-plate through which a flue duct passes, and means for attaching legs and a restrictor plate to the lower part of the back plate at two or more levels. As shown, a convector fire is mounted on the back plate 1 and exhaust gases escape through the duct 2. A single rear leg 3 is fixed centrally by bolts 4 passing through holes 5 in the back plate, and is further located by a lug 6 engaging one of two holes 7. Two gussetted brackets 8, with their gussets welded to the back plate, each have two step portions 9 and two fixed nuts 10. Each bracket has a threaded spindle 11 screwed into the nut 10 of one of its step portions 9 and locked by a nut 13. A front leg 12 is secured on to each spindle 11. A restrictor plate 14 has two threaded studs 15 attached to it which pass through one of two sets of vertically extending slots 16 in the back plate and are held by wing nuts 17. The distance between the holes 5, 5, the difference in levels of the step portions 9, and the difference in levels of the slots 17, 17 are all the same. Specification 814,381 is referred to.
Patent GB-200146-A (GB)
Title: Improvements in and relating to turning lathes
IPC: B23Q5/14
Filed: 1922-03-07
Abstract: 200,146. O'Dell, T. E. March 7, 1922. Lathes.-In a screwcutting lathe of the type having auxiliary worm gearing which is arranged to drive the lead screw when the,ordinary gearing is put out of operation the spindle 1 is provided with a cone pulley 2 connected bv a belt to a cone pulley 6 on a spindle 7 which through bevel gearing actuates a worm 12 which is mounted in a pivoted housing 15 and is engageable with a worm wheel 13 on the lead screw 14. The worm housing is positioned by means of an arm 16 carrying a spring plunger which may engage holes in a quadrantal member on the headstock. The arm 16 is also connected to the reversing lever 20 operating the usual tumbler gearing so that when the worm gear is in operation the ordinary gearing is in a neutral position as shown in Fig. 3. When the worm gearing is not required the lower end of the arm 16 may be disconnected from the worm housing.
Patent GB-1423779-A (GB)
Title: Photon isolators
IPC: H01L31/12
Filed: 1973-02-12
Abstract: 1423779 Semiconductor devices HEWLETTPACKARD CO 12 Feb 1973 [14 Feb 1972] 6742/73 Heading H1K The semiconductor photon emitter 11 and detector 21 of an optically coupled isolator are spaced apart by transparent isolating film 41 of a fluorinated ethylene-propylene (FEP) copolymer, such as Teflon (Registered Trade Mark). In one modification two FEP films sandwich between them a polyimide film, such as Kapton (Registered Trade Mark), and in another the emitter 11 and detector 21 are precoated with a clear, soft silicone resin, and a potting compound is provided around the assembly. The isolator is preferably assembled by placing the film 41 between the emitter 11 and detector 21 and heating to 250-300C to soften the film 41 and bond the assembly.
Patent GB-1511752-A (GB)
Title: Pwm signal modulator
IPC: H03F3/217
Filed: 1976-02-20
Abstract: 1511752 Pulse width modulator SONY CORP 20 Feb 1976 [24 Feb 1975] 6833/76 Heading H4L A pulse width modulator comprises a bi-stable {R-S flip-flop} 15, set; whenever the time integral of an input waveform is a predetermined portion of the time integral of the PWM pulse train provided by the bi-stable; to terminate each PWM pulse train cycle, and reset each time a sawtooth waveform starting from a given value at the commencement of a pulse train cycle attains a value proportional to the current value of the input waveform, the PWM train having constant period. The input waveform (S 1 , Fig. 4A) is subtractively combined at 2 with a signal derived from the PWM signal (S 6 , Fig. 4E), the resultant being integrated by integrator 3 to form the signal (S 4 , Fig. 4C) which is compared with the reference value zero in comparator 13, providing a pulse; for each equality of the zero reference, and integrator output signals; used to set the bi-stable. At such setting, transistor Q 2  ceases conducting, capacitor 19 charging, by means of current from constant current source 20, to provide the sawtooth waveform, (S 2 , Fig. 4A) compared with an attenuated version of the input waveform in comparator 14 providing a reset pulse to the bi-stable for each equality. Disclosed analysis enables a choice of the attenuation factor of unit 17, or the sawtooth slope, to ensure constancy of the PWM period (T, Fig. 4E). The modulator is incorporated into a class-D amplifier, the PWM signal S 6  being amplified in switching amplifier 5 before passing via low-pass filter 6 to load 7. Unit 8 provides for feedback of the PWM train to the subtraction circuit 2. The amplifier is contrasted with known class D amplifier arrangement Figs. 1, 2 (not shown), utilizing a hysteresis circuit; (4, Fig. 1), or a sample and hold circuit receiving a reference sawtooth, and an analogue input signal; (10, Fig. 2), to provide the PWM train.
Patent GB-774527-A (GB)
Title: A new and improved method of and means for imparting a pattern to thermoplastic films
IPC: B29C48/91
Filed: 1954-03-09
Abstract: Coloured patterns are applied to films of organic thermoplastic material, e.g. polyvinyl chloride or polythene, by extruding a hot film of the material on to a backing member bearing, on that surface on to which the film is extruded, a colour-printed or other coloured pattern so that the film will pick up the pattern. Preferably heat is applied to the film-backing member assembly and light pressure may also be applied.  The backing member is subsequently stripped from the film by winding-up on separate rollers or, in the case of a paper backing, by passing the assembly through an alkaline aqueous bath or by wetting the paper and brushing it from the film.  If desired, a thin layer of paper may be left attached to the film to provide a suede effect. Instead of a paper backing, a metallic sheet which has been prepared to take a printed design may be employed as the backing member in the form of an endless band.  The ink with which the backing member is printed must be compatible with the material of the film.