baber/WOPTO huggingface dataset:
Patent GB-762204-A (GB)
Title: Improvements in or relating to display stands
IPC: A47F5/025
Filed: 1954-02-15
Abstract: 762,204. Display stands. MANWARING, L. M. May 16, 1955 [Feb. 15, 1954], No. 4381/54. Class 52 (3). A rotatable display stand 19 is mounted on a hollow base which houses means 16 to rotate the stand 19 and a rotatable carrier member 29 adapted to display advertising matter in an aperture or window 28 in the front of the base. A vertical spindle 14 is supported on plates 11 and 13 which are attached a circular base plate 10 and carry an electric motor 16, and has a tapered end 17 receiving a turntable 18 supporting the display stand 19 which consists of a vertical pillar 20 and circular shelves 21 and 22. The gap between the turntable 18 and the base plate 10 is covered by a cup shaped member 24 having an arcuate aperture 28, subtending an angle of about 90 degrees, which provides a viewing window for advertising material moved across the aperture by carrier 29. Preferably the carrier is formed of two annular members 30, 31 joined and spaced apart by bolts 33, and provided with grooves 36, 37 for the reception of plastic or metal letter plates 38, the upper member depending from a collar 34 on the spindle 14. The grooves are formed at different distances from the centre so that the letter plates are inclined. Behind the letter plates and resting in grooves 36, 37 is a strip of translucent plastic 40 continuously or intermittently illuminated by a bulb 41. The carrier 21 may be made to rotate in the opposite direction to the display stand 19.
Patent GB-902807-A (GB)
Title: Improvements in or relating to the recovery of an antibiotic
IPC: C07D311/50
Filed: 1961-02-06
Abstract: Novobiocin is separated from associated acid-precipitable impurities by crystallizing the novobiocin from an aqueous solution of acetone containing from 5% to 45% acetone by volume while maintaining the pH between 4 and 6.5.  In a preferred process, citric acid is mixed with acetone, an aqueous alkaline solution of novobiocin and associated acid-precipitable impurities is added, sulphuric acid is added when the pH reaches pH 6 and the addition of sulphuric acid is continued at a rate to keep the pH within the limit between 4 and 6.5 until completion of crystallization, the proportions and concentrations being selected so that the final solution contains from 5% to 45% acetone and the temperature is held at 20 DEG  to 25 DEG C. Specification 815,518 is referred to.
Patent GB-548356-A (GB)
Title: Manufacture of polymeric materials
IPC: C08F8/20
Filed: 1941-04-04
Abstract: 548,356. Chlorinated polyvinyl chloride. BACON, R. G. R., EVANS, W. J. R., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 4, 1941, No. 4502. [Class 2 (iii)] Chlorinated polyvinyl chloride is prepared by passing chlorine into an aqueous medium containing the polyvinyl chloride in suspension. Solvents and/or swelling agents, e.g. chlorinated hydrocarbons such as ethylene dichloride, symmetrical tetrachloroethane or carbon tetrachloride, or dispersing agents, e.g. sulphonated oleic acid or the sodium salt of sulphated sperm oil alcohols, may be present.. The chlorination may be effected at elevated temperatures, with agitation, and with exposure to light and/or actinic radiation. The suspension of polyvinyl chloride may be obtained by submitting an aqueous emulsion of vinyl chloride, which may contain other ingredients such as emulsifying, dispersing or buffering ingredients, polymerization catalysts or plasticizers, to heat and pressure. After chlorination, excess chlorine may be removed by blowing with air or nitrogen, and the solvent or swelling agent may be distilled off as a binary mixture with water. Alternatively the water may be removed by adding sufficient of an organic solvent for the chlorinated polymer to form binary mixture with the water and to dissolve the polymer, and then distilling, whereby a solution of the polymer in the organic solvent is obtained. If no solvent or swelling agent is used, the polymer may be separated by filtration or by adding a coagulant such as ethanol. The products may be used for the production of films or as ingredients in coating compositions. Specification 485,000, [Group V], is referred to.
Patent GB-122321-A (GB)
Title: Improvements in or relating to Weighing Scales.
Inventor: WHITE ALFRED ERNEST
IPC: G01G1/00
Filed: 1918-03-14
Abstract: 122,321. White, A. E., (Toledo Scalc Co.). March 14, 1918. Pendulum-weight apparatus-Consists of an arrangement in hanging scales, for automatically locking the pendulum-levers, such as described in Specification 15724/13, when the scales are taken down. The suspension ring 64 is connected by a stem 66 to a cross-head supporting lateral arms 62 which carry hooks 59 adapted to engage recesses 61 in the pendulum levers 60. When the scale is suspended, its weight compresses a spring 68 and screws fixed to the casing move in slots in plates fixed to the lower ends of the arms 62, thus forcing them outwards, and at the same time the hooks 59 are freed by the descent of the pendulum levers bodily. In a modification in which the pendulum levers turn on fixed axes. stiff spring arms automatically engage projections on the levers when the scale is taken down.
Patent GB-1477792-A (GB)
Title: Organosilicon materials possessing imide groups
IPC: C07F7/18
Filed: 1975-02-04
Abstract: 1477792 Sizing glass fibres RHONEPOULENC INDUSTRIES 4 Feb 1975 [5 Feb 1974] 4728/75 Heading D1P [Also in Divisions B5 and C3] Glass fibre cloth may be sized before impregnation and lamination with imide-containing silanes obtained by reaction of a bis-imide with at least one mol of a silane H 2 N-R'-SiR" x Z 3-x  per mol of bis-imide; R is a C 2-20  divalent unsaturation free hydrocarbon radical, a C 2-10  heterocyclic radical or a C 4-20  radical consisting of divalent hydrocarbon radicals linked by -O-, -S-, -CO- or -SO 2 -, R' is a C 1-20  hydrocarbon radical or a C 4-20  radical consisting of hydrocarbon radicals linked by -NH- or -O-, R" is a C 1-6  is a monovalent radical, Z is a hydrolysable group and x is 0 or 1. The bis-imide may contain up to 20 mol % of maleimide, which may be N- alkyl or aryl, or acetoxy or acetamido-substituted. Z may be e.g. -OG, -O.CO.H, -O.CO.G, -NHG, -NG 2 , -NG.CO.G, -ON=CHG, -ON=CG 2  or -ONG 2  where G is a C 1-15  hydrocarbon radical or G 2  may form a divalent radical optionally containing a heteroatom. The reaction results in addition of the -NH 2  group to a maleimide double bond. In Examples bis-imides in which R is 4, 4'-bis-phenylene methane or metaphenylene in CH 2 Cl 2  are mixed with 1 or 2 mols or excess of H 2 N(CH 2 ) 3 Si(OEt) 3 ; to the products are added dibutyltin dilaurate in CH 2 Cl 2  or toluene. The solutions are used to size glass cloth before coating with a bismaleimide/methylene dianiline prepolymer and making up into a laminate.
Patent GB-1189403-A (GB)
Title: Colour television picture tube
IPC: H01J29/07
Filed: 1968-01-30
Abstract: 1,189,403. Colour television tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 30 Jan., 1968 [2 Feb., 1967], No. 4736/68. Heading H1D. A colour television tube with a rectangular screen is provided with a shadow mask secured in the tube without the use of a supporting frame by resilient members at the four corners. In the arrangement shown the resilient members 6 lie in diagonal planes and are welded to the upright edge 4 of the mask 3 and extend at an angle equal to half the maximum deflection angle, e.g. 45 degrees for a 90 degree deflection angle. The ends of the members 6 carry cylindrical cams 7 adapted to extend into conical holes 8 drilled in the edge of the face plate; alternatively the cams 7 may be pressed from the material of the springs 6 as the weight to be supported is less than when a frame is provided. The edge 4 should have a minimum height of 4% of the diagonal of the mask and the height may be constant, or it may be smaller at the corners. The flange 5 substantially closes the gap between the mask and the tube wall to prevent electrons from penetrating into this space.
Patent GB-215474-A (GB)
Title: Machines for bending plates, sheet metal, fibre & the like
IPC: B21D5/04
Filed: 1923-02-19
Abstract: 215,474. Frost, W. Feb. 19, 1923. Bending. - In a machine for bending vulcanized fibre &c., the curving-roll a is mounted on the ends of levers c, c<1> which are pivoted to brackets d, d' and are provided with toothed quadrants engaged by pinions g, g<1> secured to a shaft f operated by a hand-lever i. The lever lies be- ' tween the side walls h of a boss on the shaft and' carries a projection k adapted to engage a fixed toothed quadrant l to lock the roll a in any adjusted position, disengagement being effected by rocking the lever laterally against a spring m. For angular bending, a former n, Fig. 6, is placed near the top feed roll o and the plate q is bent against it by a sweeping motion of the roller a. The top roll o may be tilted at one end for inserting the former and for removing a complete closed plate such as a rectangular box, and the levers c, c<1> may be operated by a worm gear instead of pinions. The lever i may be otherwise connected to the shaft f.
Patent GB-733850-A (GB)
Title: Improvements in and relating to implement coupling devices for tractors
IPC: A01B59/042
Filed: 1952-06-09
Abstract: 733,850. Agricultural implements. RANSOMES, SIMS & JEFFERIES, Ltd., GARRARD, J. R., and BROWN, R. A. June 5, 1953 [June 9, 1952], No. 4796/55. Divided out of 733,787. Class 6 (1). Draught linkage for coupling a plough 20 to a tractor 16 comprises two lower spaced apart links 1, 2 and an upper central link 7, the points of attachment of the links to the tractor all being to one side of a line X-X drawn through the longitudinal axes of the tractor whereby the draught forces imposed by the implement will interact at a point 17 substantially coincident with the centre of power 18 of the tractor. As shown the plough 20 is provided with an adjustable cross bar 10 as described in Specification 733,787,
Patent GB-904469-A (GB)
Title: Improvements in and relating to projection lamps
Inventor: MCLINTIC WILLIAM JAMES
IPC: H01K7/02
Filed: 1960-02-11
Abstract: 904,469. Electric incandescent lamps. THORN ELECTRICAL INDUSTRIES Ltd. Feb. 11, 1961 [Feb. 11, 1960], No. 4917/60. Class 39 (2). A projection lamp comprises a sealed envelope 1 containing a light source 3 and a structure consisting of a concave ellipsoidal reflector 8 arranged with the line joining the foci lying in the direction of projection and a concave spherical reflector 9, the first focus of the reflector 8, the centre of the reflector 9 and the light source 3 being substantially coincident and the reflector 9 having an aperture 14 through which rays emanating from the source or passing through the first focus of the ellipsoidal reflector after reflection by the spherical reflector are directed by reflection from the ellipsoidal reflector. The reflectors 8, 9 may be united to form a cup-shaped unit and are supported by legs 10 connected to earthing pins 11 passing through the base 2 of the lamp. Where the light source is an incandescent filament, vent 13 may be provided in the structure above and below this. The filament 3 is supported by wires 4 extending through a block 5 which is a force fit in an aperture at the pole of the reflector 8. The reflectors may be of metal or vitreous material. The aperture 14 may be of a size to allow light rays reflected from the periphery of the reflector 8 just to pass through. In use for cinematograph projection, the film gate is located at the second focus of the reflector 8.
Patent GB-882562-A (GB)
Title: Method and apparatus for supplying several cigarette making machines with cut tobacco
IPC: A24C5/39
Filed: 1959-02-12
Abstract: 882,562. Cigarette-making machines. NEUERBURG G.m.b.H., HANS. Feb. 12, 1959 [Feb. 20, 1958], No. 4928/59. Class 130. [Also in Groups XXXV and XL (b)] Cut tobacco is fed from a store box 3e on to a rotating table 1 on which it is formed into an endless sliver above which are situated nozzles 4 which feed the tobacco, e.g. pneumatically, to a plurality of cigarette-making machines. A conveyer 3f delivers the tobacco to spiked rollers 3a, 3b, which feed the tobacco on to the conical centre portion of table 1. The nozzles 4, Fig. 3, are shoe-shaped and have a pivoted flap portion 4c which opens to prevent large lumps of tobacco blocking the nozzles. The rate of feed of tobacco is controlled by a photo-electric device 6 controlling the motor 9 driving the conveyer 3f. The speed of the motor may also be adjusted in accordance with signals generated when a nozzle 4, controlled by a valve 5, is brought into operation.
Patent GB-577937-A (GB)
Title: Improvements in or relating to radio range finder
IPC: G01S13/14
Filed: 1941-04-17
Abstract: 577,937. Radio-echo apparatus. FORMAN, J., and PYE, Ltd. April 17, 1941, No. 4986. [Class 40 (v)] [Also in Group XXXVI] In a radio range-finder wherein a pulse of radio waves is transmitted and after reflection from the object of which the distance is to be determined is received on a receiver near the point of origin, the " transmission " initiates the charging or discharging of a condenser 17 and the time between " transmission " and " reception " and hence the distance of the object is measured by measuring the charge of the condenser at the moment of reception. In the form shown, the transmission pulse in addition to being radiated, influences a resistor 12, thereby " triggering " a valve 13 which is preferably a gas discharge valve known under the Registered Trade Mark " Thyratron," so that current from a transformer 15 can pass to charge the condenser 17. The received pulse enters at 20 and triggers another valve 22 allowing the condenser 17 to discharge through a meter 19, the reading of which is thus proportional to the charge of the condenser. In a modification, Fig. 3 (not shown), the transmission pulse causes the quick charging of the condenser to a predetermined amount and simultaneously opens a slow discharge circuit for the condenser. In another modification, Fig. 4, the condenser is connected to the plates 37 of a cathode-ray tube and will cause the beam to be deflected in accordance with the charge. The transmission pulses and reception pulses are both fed to the grid 38 which is biassed to cut off by the resistor 39. At every transmission pulse, the condenser will be uncharged and a series of spots will appear on the screen at the same point which will indicate the position of the observer. Similarly, a series of spots will appear corresponding to the received pulses. These will indicate the position of the object and will alter their position as the distance of the object varies.
Patent GB-1498617-A (GB)
Title: Arrangement for focussing the image of an information structure onto a transducer
IPC: G02B7/28
Filed: 1975-02-06
Abstract: 1498617 Automatic control of focus PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 6 Feb 1975 [9 Feb 1974] 5073/75 Heading G3R In a system for maintaining the focus of the image of an information structure on a photoelectric transducer by causing its output to adjust an optical element (lens L) in a reading light beam the adjusting signal is modified by feedback of the velocity of movement of the optical element. The object is to prevent the large overshoot which may occur at switch-on and cause damage to the record. When in focus the image falls between photo-cells L1, L2, as explained in Fig. 1 (not shown). Thus, their differential output is a measure of amount and direction of misfocus and this is applied via amplifiers D, A2 to a drive coil S1. The rate feedback may be provided by a capacitor device but as shown it is derived from a "tachometer" winding T. It is applied via Zener diodes Z1, Z2 which provide a dead band. This is symmetrical with regard to direction if the light is reflected from a track on the record surface, but if light is transmitted through the carrier an asymmetrical threshold is used, either by choice of Zeners or by separate amplifiers of different gains in the feedback path, Fig. 3 (not shown).
Patent GB-1476093-A (GB)
Title: Electable shelter structure and method of erection
IPC: E04B1/32
Filed: 1975-02-06
Abstract: 1476093 Mounting winches LOCKHEED AIRCRAFT CORP 6 Feb 1975 [2 Aug 1974] 5107/75 Heading B8B [Also in Divisions E1-E2 and F2] A winch 50, Fig. 11, is mounted on an A-frame structure 48 provided with a pulley 51 and adjustable legs 52 for levelling purposes. In a modification, see Fig. 12 (not shown), the winch (50) is mounted on the side of a container (49) having adjustable legs (55) and pulleys (53, 54). A winch 72, Fig. 15, for positioning wall panels 13, see Heading E1-E2, is mounted on an upper pulley section 67 telescopically received in a lower pulley section 68. The sections 68, 67 are pivotally connected to a mounting pad 70 and a support bar 71 respectively. The cable extends over a pulley mounted on an axle 74 and is connected to a panelengaging bar 75. Two winches (128, 126) for opening and closing a door are jointly mounted on a common upright, see Fig. 31 (not shown).
Patent GB-1451285-A (GB)
Title: Temperature sensitive control circuit
IPC: G05D23/20
Filed: 1974-02-04
Abstract: 1451285 Measuring temperature electrically RCA CORPORATION 4 Feb 1974 [9 Feb 1973] 05117/74 Heading G1N [Also in Divisions H2 and H3-5] The temperature sensing unit of a temperature sensitive switching circuit for protecting apparatus against overheating comprises two series paths of semi-conductor rectifiers connected in parallel across a current source one path having one more rectifier than the other, this extra rectifier being the base-emitter junction of a transistor 12 whose collector is connected to a switching unit so that the potential difference across the rectifiers 11 in the one series path equals the sum of the potential differences across the rectifiers 13 in the second series path plus the potential difference across the base-emitter junction of the transistor 12 which base-emitter junction potential difference must  thus be constrained to follow a slower decrease with temperature rise than in the free state and causes a compensating change in the transistor collector current which above a threshold temperature rises dramatically to operate the switch. The rectifiers are formed by transistors having their basecollector junctions shorted so that they act as diodes. An embodiment is described as used with an amplifier for limiting the amplifier dissipation, Fig. 4 (not shown). To increase the sensitivity of the circuit one of the diode connected transistors in series with the transistor 12 may be connected in the base lead of that transistor (12), Fig. 5 (not shown). In a further embodiment the transistor 12 is diode connected and a connection is made from its collector to the base of a transistor having a much larger base-emitter junction area to provide an increased output current Fig. 6 (not shown).
Patent GB-122328-A (GB)
Title: Improvements relating to Unsinkable Ships and other Water Craft.
Inventor: WEBBER WILLIAM HENRY
IPC: B63B43/12
Filed: 1918-03-23
Abstract: 122,328. Webber, W. H. March 23, 1918. Compartments ; decks.-To render a ship unsinkable in the event of damage by collision, gunfire, torpedo, or grounding, a second deck is built above or below the main deck b, over the whole or any part of the plan area of the ship, and the interspace is subdivided by longitudinal and transverse bulkheads into air and watertight compartments h. The second deck may be formed of constructional ironwork, or of wood, or both.
Patent GB-567069-A (GB)
Title: Improvements in or relating to rollers for moulding presses
IPC: B30B11/16
Filed: 1943-03-31
Abstract: 567,069. Rollers for moulding presses. TAPPING, F. F. March 31, 1943, No. 5160. [Class 87 (ii)] A roller comprises a cylindrical central driving' hub, an outer ring consisting of segmental halfmould plates, each extending longitudinally from end to end of the hub, means for locating each plate in position on the hub, and spring clips at each end to secure each plate to the hub. Three examples are given: (1) (Figs. 1 and 2). Plates 5 have ribs 6 which fit into grooves 2 on the roller, and studs 8 threaded into the plates at 7 have eyes through which pass spring clips 12. (2) (Fig. 4, not shown). The plates are located by dowels and secured by tension spring clips sprung into recesses in the plates and in the hub. (3) (Fig. 5). The plates 5 have tongues 5b which fit between studs 16 on the hub and are secured by clips 17. There may be a plurality of rows of moulding recesses in each half-mould plate.
Patent GB-1016532-A (GB)
Title: Improvements in or relating to fabric linking or sewing
Inventor: MATTHEWS DENIS
IPC: D05B7/00
Filed: 1962-02-10
Abstract: Knitwear is linked by single thread chain stitching on a linking machine by means of a hooked or latched needle having a pointed end and co-operating with a thread-laying member.  The needle may be positioned either inside or outside the point dial.
Patent GB-546295-A (GB)
Title: Improvements in or relating to calculating machines
IPC: G06F7/40
Filed: 1939-10-23
Abstract: 546,295. Calculating machines. JENNINGS, H. W. K. (Addressograph-Multigraph Corporation). Oct. 23, 1939, No. 5206/41. Divided out of 546,272. Drawings to Specification. [Class 106 (i)] This invention is that described in respect of Figs. 6, 7 and 8 of Specification 546,272, to which reference is made, and is set forth broadly in relation to apparatus for controlling a sequence of operations in a calculating machine.
Patent GB-494570-A (GB)
Title: Improvements in or relating to sound reproducing and recording apparatus
IPC: H04R9/12
Filed: 1937-02-22
Abstract: 494,570. Oscillographs. HAGLUND, A. G., and WITTANDER, S. Feb. 22, 1937, No. 5247. Convention date, Feb. 22, 1936. [Class 37] [Also in Group XXXIX] An instrument for recording sound records comprises two oppositely disposed magnetic fields, a cross carrying a needle or the like and having a plurality of arms with bearing edges on two opposite arms thereof, an electric conductor movable in the magnetic fields and arranged around the cross and bearings for the edges arranged so that the conductor can vibrate about an approximately diametral or diagonal axis. Two magnets 1, 2 secured to a supporting member 3, preferably of aluminium, are provided with inner pole-pieces 14, 15 of opposite polarity and outer polepieces 13, 13 separated by a slot 17. The conductor 12, which moves in an arcuate gap 10, 11 between the pole-pieces, is secured to the ends of the arms 18 of the cross which has further arms 19 carrying knife edges 30 seated in recesses in projection 7<1>, 7<2> formed on the member 3. The cross is held against its bearings by elastic strips 34 passing round further knife edge portions 29 formed on the arms 19. The arms 18 are preferably bevelled at their outer ends and are formed with perforations 24. The Specification as open to inspection under Sect. 91 states that the electromagnetic unit may be employed for the photographic recording of sound, a connection being provided between the oscillating cross and a light projector whereby a ray from the projector is caused to follow the electrical oscillations applied to the coil 12. This subject-matter does not appear in the Specification as accepted.
Patent GB-932653-A (GB)
Title: Improvements in or relating to petroleum fractions
IPC: C10M101/02
Filed: 1961-02-13
Abstract: One or more blending components, each of which has a Ca value (defined) 4-40, is separated from a petroleum lubricating oil, by solvent extraction or selective adsoption, and blended, in the proportion 2/3 -4 parts to 1 part, with one or more other lubricating oil blending components to give a lubricating oil.