baber/WOPTO huggingface dataset:
Patent GB-1192204-A (GB)
Title: Methacrylonitrile Polymer Blends
Inventor: WILSHER RUDOLPH STANLEY
IPC: C08L55/02
Filed: 1967-05-31
Abstract: 1,192,204. Polymer blends. PRINCETON CHEMICAL RESEARCH Inc. 31 May, 1967, No. 25137/67. Headings C3B and C3P. Homogeneous polymer blends comprise 1- 99% by weight of a vinyl halide or urethane polymer or an epoxy or phenol-formaldehyde prepolymer resin, and 1-99% by weight of a homopolymer of methacrylonitrile; or of a copolymer of methacrylonitrile with an ester of acrylic, 2-chloroacrylic, fumaric or maleic acid, or 2-chloroethyl vinyl ether or vinyl acetate; or of a copolymer of (a) 25-45 parts by weight of methacrylonitrile, (b) 13-45 parts by weight of styrene or a substituted styrene (e.g. α-methyl styrene or vinyl toluene) and (c) 5-25 parts by weight of butadiene. The vinyl halide polymer is preferably polyvinyl chloride, and the epoxy prepolymer may be a bisphenol A-epichlorohydrin resin, an epoxidized fatty acid or a bis-(epoxy-cyclohexyl)-spirodioxane (1 : 3) compound. The blends are useful for moulding, casting, bonding, laminating, coating and in building and construction applications. In examples, N-phenyl-#-naphthylamine is added as antioxidant to methacrylonitrilestyrene-butadiene copolymers, and films are formed from solutions of polymer blends in cyclohexanone or cyclohexanone/methyl ethyl ketone mixture. The final example describes the preparation of methacrylonitrile-vinyl acetate copolymers, which are usable in the polymer blends, by emulsion polymerization (sodium lauryl sulphate emulsifier) in the presence of potassium persulphate.
Patent GB-727549-A (GB)
Title: A switchboard rack and panels
IPC: H02B1/48
Filed: 1953-09-11
Abstract: 727,549. Switchboards. BAGH, A. Sept. 11, 1953 [Sept. 13, 1952], No. 25147/53. Class 38 (5). A switchboard comprises a frame 1 with a rear wall 12 and bus bars 13 on which panels 3 carrying devices 4 e.g. switches or relays, are detachably and pivotally mounted to give easy access to the wiring 14. Opposite sides of each panel are flanged as at 5, Fig. 2, bayonet slots 7 in these flanges engaging pins 10 provided on supports 2 and end walls of frame 1, whereby each panel can be pivoted independently of the others and supported in a horizontal position by engagement of hooks 9 with pins 11. To detach the panel, the wiring is disconnected and the panel then swung back into the position shown in dotted lines in Fig. 2. Each panel is retained in a vertical position on the frame by screws 15 engaging strips 16 provided on the supports 2 and end walls of frame 1.
Patent GB-285338-A (GB)
Title: Improvements in bolts and lock nuts
IPC: F16B39/08
Filed: 1927-09-24
Abstract: 285,338. Gros-Claude, D. L. A. July 29, 1927, [Convention date]. Locking nuts.- For locking nuts a notched ring is fitted round the nut, the notch receiving the bent end of a plain locking pin which fits in a tapered groove along the bolt. A plain pin G, Fig. 6, is inserted in a tapered groove in the bolt and is engaged by the nut H and its end is bent over to engage a notch in a ring, Fig. 1, placed around the nut. The ring may have claws which can be bent around the other two sides of the nut.
Patent GB-335023-A (GB)
Title: Improvements in systems for reproduction of sound from optical sound records
IPC: G11B7/00
Filed: 1929-08-19
Abstract: 335,023. Jensen, V. April 20, 1929, [Convention date]. Optical apparatus.-Relates to the reproduction of sound from an optical record and consists of an arrangement in which the light-sensitive cell is disposed at a distance from the film driving and guiding mechanism in order to avoid sound and electrical interference from the latter. In the tube a, Fig. 1, are placed a light source b, a system of condensing lenses c, and a light slit d. The light passing through the film e is directed on to the photo-electric cell f by means of a mirror g and a lens h and sound reproduction is effected through the circuit i containing an amplifier and a loud-speaker k. The mirror g, lens h, and cell f may be disposed in a tube 1, Fig. 2, in which mirrors or prisms m are inserted so that the direction of the light path may be altered to follow the course of the tube. As shown at t, the tube l is divided into two parts with a telescoping connection so that mechanical vibrations are prevented from being transmitted to the cell f . The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement whereby the film is maintained taut at the portion of its path in front of the light slit. This feature now forms the subject-matter of Specification 335,511 and does not appear in the present Specification as accepted.
Patent GB-825696-A (GB)
Title: Sound film apparatus
IPC: G11B15/34
Filed: 1958-08-07
Abstract: 825,696. Combined sound and picture apparatus. AGFA A.G. Aug. 7, 1958 [Aug. 28, 1957], No. 25371/58. Class 40 (2). An apparatus for showing sound films comprising a projector 1 capable of use as an independent unit for silent film and a sound unit 8 constructed as a base for the projector and containing sound recording and reproducing apparatus and adapted to be connected to and detached from the projector. When the projector and sound unit are used conjointly the film passes down from the picture gate 3 and through the sound gate 30 from which it is drawn over a roller 25 stabilized by a flywheel 26 by a sprocket 5 in the projector. Accurate setting of picture frame and sound track is obtained by initially pressing a loop of the film into a curved portion 53 of a recess 19 in the sound unit. Location pins, Fig. 2 (not shown), in the sound unit are provided for connecting microphone, external amplifier and loudspeaker, and an external sound source such as a radio set or tape recorder, under the control of a switch 43. Push buttons 32, 33 are supplied for applying and releasing of pressure on the tape to and from the transducers and roller 25, while push-buttons 40, 41 control switching from RECORD to REPRODUCE and vice versa, the intensity levels being controlled by an attenuator 42.
Patent GB-299165-A (GB)
Title: Means applicable to vehicles for intimating the presence of obstructions in the path of travel
IPC: B60R19/48
Filed: 1927-09-27
Abstract: 299,165. Butcher, E. T. Sept. 27, 1927. Obstruction-removers. - A device for giving a warning when a vehicle encounters an obstruction comprises a wire or cable 4, which is mounted on a pair of arms 1 pivoted to a part of the vehicle and is adapted, when distorted, to operate an audible or other electric warning device. In the construction shown the arms 1 are mounted on ball-bearing pivots between two discs 21, 23 and at their outer ends are provided with hollow curved extension members 3, while one end of the cable 4 is attached to a tensioning device within one of the members 3 and the other end is attached to a spring-pressed piston 6 movable within the other member 3. Normally the piston 6 bears against and presses inwardly a spring- controlled spindle 7 , carrying an electric contact 10 which co-operates with a contact 9 on the member 3 to constitute a normally open switch in the circuit of an electromagnet 11 controlling an electric warning device 14, the member 3 forming part of the vehicle " earth." When an obstruction is met and the cable 4 is distorted, the piston 6 is moved outwardly, allowing the spring 8 to close the switch 9, 10, whereby the electromagnet 11 is energized and the warning device, 14 operated.
Patent GB-655145-A (GB)
Title: Improvements in or relating to mercury vapour discharge lamps
IPC: H01J61/10
Filed: 1948-09-30
Abstract: 655,145. Electric discharge lamps. PHILIPS ELECTRICAL, Ltd., HOLMES, T., and GOSTT, A. W. Sept. 30, 1948, No. 25496. Drawings to Specification. [Class 39 (i)] A mercury vapour discharge lamp operated with its discharge path substantially horizontal is associated with a permanent magnet for producing a magnetic field whose direction is substantially coincident with the discharge path, thus preventing the discharge from rising to the top of the lamp. The position or the permanent magnet is adjustable.
Patent GB-814807-A (GB)
Title: Improvements in or relating to range finder sights
IPC: F41G3/06
Filed: 1955-09-06
Abstract: 814,807. Range-finder sights. BEACONING OPTICAL & PRECISION MATERIALS CO. Ltd. Sept. 6, 1955 [Sept. 30, 1954], No. 25509/55. Class 97(1) [Also in Group XXI] In a range-finder sight of the type comprising an optical range-finder operating on the co-incidence or split-image principle and including a manually operable member to adjust the system to determine the target distance and a sighting system having a vertically adjustable reticule, a pivoted lever engages the reticule at a point spaced from the lever pivot, a cam is connected to and rotatable in response to movements of the manually operable member and engages the lever between the pivot thereof and its point of contact with the reticule, and means are provided for varying the ratio and the length of the lever arms between the pivot and the point of contact of lever and cam to the length of the lever arm between the pivot and the point of contact of lever and reticule. By varying this ratio compensation can be effected for changes in the original ballistic curve of a firing weapon to which the sight is clamped. The co-incidence type range-finder may be as described in Specification 738,504 in which a member is manually operated to adjust two relatively rotatable wedges to bring the target images into co-incidence, this member being coupled to a cam 1 which through pivoted lever 2 effects the vertical adjustment of reticule 4. The transfer ratio of this linkage is varied by sliding pivot support 5 along a fixed track 6 by means of a screw 7 having a dial 10 calibrated in terms of the factor or factors which causes the changes in the ballistic curve of the firing weapon. Alternatively, the axis of the cam may be shifted laterally.
Patent GB-283639-A (GB)
Title: Method of and apparatus for the distillation of oils from oil shale or coal or similar material
IPC: C10G1/02
Filed: 1926-10-13
Abstract: 283,639. Crozier, R. H. Oct. 13, 1926. Coking and car. bonizing processes. -In distilling oil from intumescent shales or coals within a vertical retort the material is heated at the upper end of the retort to a high initial temperature (at least 400‹ C.) so as to volatilize pitchlike constituents, and the heating of the semi. coke thus formed is maintained as the charge descends. In a retort comprising superposed flat and semi-cylindrical sections provided with a series of inclined flues B, vapours traps C and amnular flues D, as described in Specification 245,499, a number of gas or like burners G are arranged at various levels, combustion products passing downwardly through the flues to the bottom of the retort and thence to an outer flue E and fan F.
Patent GB-771869-A (GB)
Title: Improvements in or relating to a new salt of vitamin b
Inventor: GAILLOT PAUL
Filed: 1955-09-06
Abstract: The invention comprises Vitamin B1 methylene-bis-b -hydroxynaphthoate and the preparation thereof comprising reacting in aqueous solution a water-soluble salt of methylene-bis-b -hydroxynaphthoic acid with a water-soluble salt of Vitamin B1.  The reaction may be effected at room temperature with a concentration of 5-10 per cent Vitamin B1 in the reaction mixture.  In an example, sodium methylene-bis - b  - hydroxynaphthoate is reacted with Vitamin B1 hydrochloride.ALSO:An animal food contains vitamin B1 methylene-bis-b -hydroxynaphthoate (see Group IV(b)).ALSO:A food preparation, e.g. flour, contains vitamin B1 methylene-bis-b -hydroxy naphthoate (see Group IV(b)).
Patent GB-781444-A (GB)
Title: Improvements relating to high frequency electrical generators for dielectric heating
Inventor: KINDER ARTHUR THOMAS
IPC: H05B6/46
Filed: 1952-10-13
Abstract: 781,444. Dielectric heating. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 22, 1953 [Oct. 13, 1952], No. 25601/52. Class 39(3) [Also in Group XL(c)] A high frequency generator is coupled to dielectric heater electrodes through an inductive coupling which is overcoupled such that at the frequency employed the voltage output over the working band of frequencies will be a maximum at each end of the band, and will have a reduced value intermediate the extreme frequencies, and the apparatus is so adjusted that with the dielectric load material cold the frequency is on the outer slope of the frequency characteristic,. whilst when the material heats up the frequency drifts through the adjacent maximum towards the further maximum. With such an arrangement a process of heating a dielectric material whose dielectric constant varies with its temperature consists in causing such variation to vary the resonant frequency of the load circuit such as initially to build up the voltage across the electrodes between which the material is placed over a prescribed time interval, and with further rise in temperature of the material to maintain a working voltage across the electrodes for a further period. During the voltage build-up the electrodes may be pressed together to remove air gaps in the material which may cause sparking. Specification 781,443 [Group VIII ]is referred to.
Patent GB-318204-A (GB)
Title: Separable fastener
IPC: A44B19/40
Filed: 1929-08-22
Abstract: 318,204. Blaskopf, M. Aug. 30, 1928, [Convention date]. Fastening strips.-In the " rip-up " type of fastener, the interlocking elements 3, which are engaged and disengaged by a slider, are attached to a fabric strip 1 which is inelastic longitudinally and elastic transversely. The fabric strip may have transverse indiarubber threads, and may be elastic across only a portion of its width. The strip, as shown in Fig. 4, may be of indiarubber with an inelastic cord 2 embedded at the fastening edge and a piece of inelastic fabric 5 at the other. In another modification, a strip of rubber e, Fig. 6, strengthened at one edge is at the other sandwiched between the edges of a folded inelastic strip i. The inelastic strip may surround the cord 2, or a pair of cords may be arranged one at each side of the folded strip.
Patent GB-656496-A (GB)
Title: Improvements in or relating to apparatus for feeding labels or blanks
IPC: B65C9/08
Filed: 1948-10-01
Abstract: 656,496. Wrapping-machines. ROFFEY, W. A., TREDGET, C., and MOLINS MACHINE CO., Ltd. Oct. 1, 1948, No. 25637. [Class 94(i)] [Also in Group XVI] 'Apparatus for feeding labels or blanks comprises a pair of feed rollers and a friction gripper on the exit side of the rollers adapted to receive the blank as it emerges from the feed rollers and hold it by its trailing end so that it hangs vertically in a position which is fixed relatively to the fixed parts of the apparatus and from which it may. be removed by an article on a conveyer which is thus enabled to engage the blank in exact register with the leading and trailing edges thereof. Wrapper blanks are fed under a guide 9 over a rotating feed roller 8 and into the bite between this roller and a co-operating small pressure roller 10. The roller 10 is carried by a bell-crank lever 19, 21 pivoted at 20 to the lower end of a spring- pressed lever 17 pivoted at its upper end to the machine frame, a screw 22 on the lever 17 contacting one arm of the bellcrank lever 21 serving to adjust the position of contact of the roller 10 around the periphery of the roll 8. The blank is fed down from the rollers 8, 10 through friction gripper means which includes a fixed central friction block 27 and side guides 26 and co-operating bars 28 on an arm 29 pivoted to the machine frame. The bars 28 are moved, by engagement of a lever 31 on the pivot of the arm 29 with a rotary cam on the shaft of the roller 8, away from the fixed block 27 while the blank is being fed down therebetween and then, towards the end of the movement of the blank, moved towards the block 27 to frictionally engage the blank with a pressure sufficient to hold the blank motionless, by its trailing edge, immediately it leaves the rollers 8, 10 completely. An article on a conveyer 15 then engages the blank so positioned in its path to fold the blank around it. When the blank is firmly engaged by the article the gripper means is opened again to receive a fresh blank. The blanks may be cut from a web prior to delivery to the rolls 8, 10. Specification 240,926, [Class 94(i)], is referred to in the Provisional Specification.
Patent GB-229258-A (GB)
Title: Condensing apparatus for separating condensing vapours from air or other gases
IPC: F28B9/10
Filed: 1924-10-28
Abstract: 229,258. Boecler, A. Feb. 12, 1924, [Convention date]. Surface condensers. - Condensible:vapours are separated from air or other gas by passage through a U-shaped apparatus having one limb a cooled by a cooling coil c or by a jacket and the other limb i heated by a pipe k or by a jacket. The cooling and heating cause gas admitted at an inlet b to circulate down the limb a and up the limb i to an outlet o. Condensate is removed through an outlet f at the base.
Patent GB-785681-A (GB)
Title: Steroid compounds
IPC: C07J75/00
Filed: 1953-09-16
Abstract: The invention comprises compounds having the formul : <FORM:0785681/IV (a)/1> in which (Formula I) the 3-position is occupied by either a divalent group convertible to keto by acid hydrolysis, e.g. a cyclic acetal, or by a pair of univalent groups together convertible to a single keto group by acid hydrolysis, e.g. a non-cyclic acetal or in which (Formula II) the 3-position is occupied by a univalent group which is convertible to keto by acid hydrolysis, e.g. an enol ether and their preparation from the corresponding 17-acetyl compound by treatment with an oxalic acid diester, e.g. dimethyl oxalate in the presence of a strong alkali, e.g. sodamide, sodium hydride and sodium triphenylmethyl, or of an alkali-metal alkoxide, e.g. sodium methoxide.  Examples disclose the production of d and dl-D 5-3-ethylenedioxy-11-keto-etrenoylpyruvic acid. Specifications 763,208, 777,691, 777,693, 785,683 and 785,684 are referred to.
Patent GB-1502076-A (GB)
Title: Paper shredding or cutting mechanism
IPC: B26D1/24
Filed: 1976-06-21
Abstract: 1502076 Document shredders A GOLDHAMMER [trading as FEINWERKTECHNIK SCHLEICHER & CO] 21 June 1976 [26 Nov 1975] 25687/76 Heading B2A A document shredder has a pair of interdigitating cutting rollers 5 each driven via a sprocket 7 by its own individual motor 10, the two motors being mounted with output spindles parallel with the cutting rollers, and being supplied by a circuit having a common capacitor. The motors are each independently fan cooled and cooling air passes across the gears 7, 11 of that motor and exits via tubes 13.
Patent GB-637368-A (GB)
Title: Improved method of making alloys
IPC: C22C1/02
Filed: 1946-08-28
Abstract: A process of making an alloy, other than one containing iron or nickel or both except possibly in such small quantity as to constitute a trace, includes the step of coating one or more of the constituents of the charge, before addition to the melting crucible, with a reactive coating or coatings such that a chemical reaction or combination takes place at a suitable comparatively low temperature between the reactive coating and the ingredients of the charge to form a complex compound which dissociates at a suitable higher temperature, but below the melting point of the alloy to be formed, thereby releasing the constituents of the charge in such form that they alloy easily, said reactive coating or coatings being substances which are or include a salt or metallic oxide or hydroxide.  An organic liquid may be added to the reactive coating When one or more of the constituents of the charge is lithium, sodium, potassium, rubidium or caesium the reactive coating therefore is or includes calcium oxide or dry calcium hydroxide.  The reactive coating to be associated with copper, silver and/or gold is a chloride or nitrate of an alkali metal or ammonium or zinc or of other easily volatilized metal or metalloid, to which is added one or both of alcohol and glycerine. Beryllium, magnesium, calcium, strontium and/or barium are associated with a chlorate, urate or tartrate or fatty acid salt of an alkali metal with oleic acid.  Zinc, cadmium and/or mercury are associated with a chloride, nitrate or sulphate or fatty acid salt of calcium or an alkali metal with a mixture of glycerine and oleic acid.  Aluminium, boron, gallium and/or thallium are coated with a citrate, tartrate or urate of sodium, potassium or zinc with added alcohol.  Titanium, zirconium, mony and/or bismuth are coated with a chloride, sulphate citrate or tartrate or fatty acid salt of a heavy metal to which is added a mixture of glycerine and alcohol.  Carbon or silicon is coated with a chloride of chromium or iron. Phosphorus, vanadium, niobium, tantalum, arsenic, antimony and/or bismuth are coated with a chloride or fatty acid salt or other organic salt of calcium together with wood alcohol. Chromium, molybdenum, tungsten, selenium, sulphur and/or tellurium are coated with a sulphate, fluoride, nitrate, chloride or fatty acid salt of zinc, alkali metal or alkaline earth metal to which is added a mixture of alcohol and glycerine.  Manganese and/or cobalt are coated with any sulphate, fluoride or chloride. Rhodium, palladium, osmium, iridium and/or platinum are coated with a chloride, fluoride, dichromate or fatty acid salt of an alkali metal, zinc or tin with sufficient sulphuric acid thoroughly to wet the salt; or a formate or benzoate or finely divided aldehyde resin, to any of which foregoing substances is added a mixture of alcohol and glycerine.  The coating is applied to its respective alloy constituent or constituents by intimately mixing it, in a fairly finely divided state, with the said constituent or constituents.  Specification 455,434 is referred to.
Patent GB-1014189-A (GB)
Title: Improvements relating to delay lines
Inventor: JOHNSON KENNETH CHARLES
IPC: H03H7/34
Filed: 1963-06-28
Abstract: 1,014,189. Delay lines. FERRANTI Ltd. June 25, 1964 [June 28, 1963], No. 25715/63. Heading H1W. A delay line having a delay time which may be continuously varied and having inductance and capacitance comprises, Fig. 1, an elongated flexible insulating sheet 1 with a repetitive pattern of copper elements printed on one side, each element comprising a conductor 2 linking a capacitor plate 3 and two strips 4 joined by a strip 5. On the other side of the sheet 1 is printed another repetitive pattern of copper elements shown in broken line, each element comprising a conductor 6 and capacitor plate 7. The delay line is formed by rolling the strip 1 about one longitudinal edge together with a further flexible insulating sheet (not shown) serving to insulate the plates 3, 7 of adjacent turns. When the sheet is rolled the strips 4 form mutually coupled inductances. In a modification, Fig. 2, the repetitive pattern on one side of the sheet 1 comprises strips 8 joined at the ends by strips 9, 10, the pattern on the other side of the sheet shown in broken line, comprising a conductor 11 having arms 12, 13. When the sheet is rolled about a longitudinal axis the strips 8 constitute the inductance and the strips 8 together with the strips 12, 13 constitute the capacitance of the line. The delay time may be varied by skewing the rolling of the sheet 1 or by varying the diameter to which it is rolled, apparatus for thus rolling the sheet being described with reference to Figs. 4-6 (not shown).