baber/WOPTO huggingface dataset:
Patent GB-824871-A (GB)
Title: Improvements in or relating to rotatable holders for rolls of photographic material
Inventor: BOWLER VALENTINE MARCUS
IPC: G03B17/30
Filed: 1957-02-11
Abstract: 824,871. Film spools. KODAK Ltd. Jan. 31, 1958 [Feb. 11, 1957], No. 4549/57. Class 98(1) A photographic roll film holder comprises a rotatable film receiving hub and a flange which is axially and angularly movable relative to the hub to either of two predetermined positions to accommodate either of two rolls of different widths with longitudinal centre lines in the same position relative to the length of the hub, the flange and a plate secured to an end of the hub being provided with one or more co-operating projections and apertures which in one predetermined position of the flange are displaced axially and radially relative to one another to space the flange from the plate and in the other predetermined position of the flange are in engagement so that the flange bears against the plate. As shown, a hub 1 has a portion 4 of reduced diameter upon which a flange 5 is freely mounted and has pegs 9 which may engage apertures 8 in a plate 6 fast with the end of the hub to allow the flange to contact the plate for accommodation of the greater width film. Alternatively, the flange may be displaced inwardly of the hub and rotated so that the ends of the pegs 9 bear against the surface of the plate 6 to space the flange and plate apart for accommodation of smaller width film. The two alternative positions are positively located by a projection 10 on the plate 6 bearing against the peg 9 adjacent an aperture 11 on either side thereof and a leaf spring 12 prevents the' flange 5 from rattling.
Patent GB-1457797-A (GB)
Title: Bituminous composition
IPC: C08L95/00
Filed: 1974-01-31
Abstract: 1457797 Bituminous composition BRITISH PETROLEUM CO Ltd 10 Jan 1975 [31 Jan 1974] 04569/74 Headings C3N and C3P A process for preparing a bituminous composition comprises reacting bitumen and 6- 150% by weight of the bitumen of a chlorinated polyolefin at 140-250‹ C. The process may be carried out in the presence of a dehydrochlorinating agent, e.g. zinc oxide. The chlorinated polyolefin may be chlorinated polyethylene or polypropylene. The chlorine content may be 15-45% by weight of the chlorinated polyolefin. It appears that during the heating, cross-linking occurs between unsaturated groups in the bitumen and the polyolefin and this may be assisted by the addition of conventional cross-linking agents and acclerators and also phenol-formaldehyde resins. The bitumen may be a vacuum distillation residue or the product obtained by air blowing such a residue. The composition may also contain a filler such as limestone, fuel ash, carbon black, clay, silica or asbestos. The specific examples refer to the preparation of compositions comprising bitumen and chlorinated polyolefin in a 1 : 1 weight ratio.
Patent GB-713878-A (GB)
Title: Process for the polymerisation or copolymerisation of hydrocarbons having more than one olefinic bond and the resulting polymers
IPC: C08F2/22
Filed: 1952-02-21
Abstract: In a process for the polymerization of hydrocarbons containing more than one olefinic bond in a system having a continuous aqueous phase which comprises a solution of an emulsifier in water and a discontinuous phase which comprises the olefinically unsaturated hydrocarbon, the aqueous phase has a polymer concentration less than 10 per cent. by weight and a monomer concentration less than 7 per cent. by weight at the end of the polymerization.  Specified hydrocarbons are butadiene, methyl-2-butadiene, dimethyl-2, 3-butadiene, isoprene, chloroprene and pentadiene which may also be copolymerized with styrene, acrylonitrile, methyl methacrylate and isobutene.  A catalyst such as cumene hydroperoxide may also be present as may also be potassium oleate, sodium pyrophosphate, ferric sulphate, tertiary dodecyl mercaptan and glucose.  The polymerization may take place by passing a stream of drops of the hydrocarbon through a solution of an emulsifier in water containing a polymerization catalyst while the concentration of the polymer may be kept so low that the polymer remains soluble in toluene at room temperature.  The process may be batch or continuous.  After addition of phenol b -naphthylamine as stabilizer the suspension is coagulated by addition of a mixture of methanol and 50 per cent. suphuric acid. Specifications 542,434, 649,654, and 687,984, are referred to.
Patent GB-1303663-A (GB)
IPC: B64C25/22
Filed: 1970-01-30
Abstract: 1303663 Retractable undercarriage for aircraft MESSIER 30 Jan 1970 [31 Jan 1969] 4634/70 Heading B7G  An undercarriage leg 1 is extendible and retractable under the control of a fluid-operated jack 2 and is braced in the lowered position (Fig. 1) by a strut comprising arms 3 and 4. The arm 4 is pivoted at 41 and carries a plate 5 having a cam slot 51 which controls, via arms 6 and 7, the position of slide 73 of fluid distributer 12 also interconnected via arms 7 and 9 with catch 8 which engages member 24 to lock the undercarriage when retracted. Door 16 of the undercarriage bay is opened and closed by fluid-operated jack 23, being locked when closed by the engagement of catch 17 and roller 19, and movement of the door controls, by means of arm 15 and cam slot 141 of plate 14 the position of slide 131 of fluid distributer 13 (see Fig. 7). When the undercarriage is locked down fluid is being fed under pressure to line X to enter distributer 12 (which is in the position shown in Fig. 4) at 122 and to be passed via cavity 1226 of the distributer to cavity 232 of jack 23 to maintain the door 11 closed; line Y is connected to a fluid reservoir. In this position of the door distributer 13 causes both sides of the jack 2 to be connected to vent line 138, Fig. 7, so that the undercarriage is not actuated. In order to raise the undercarriage line X is connected to the reservoir and pressure fluid is instead fed to line Y, to pass via cavity 1227 of distributer 12 to jack 20 to release the catch 17 and to cavity 233 of the jack 23 to open the door. As soon as it has opened beyond a certain angle, a new position of distributer 13 (Fig. 8, not shown) allows fluid to pass via channels 134 and 136 to the jack 2 so as to raise the undercarriage. This causes slide 73 to assume a first new position (Fig. 5, not shown), wherein the fluid is still fed to jack 23 so as to open the door, but at reduced pressure, via narrow channel 1218 and non- return valve 1219, and then a second new position (Fig. 6, not shown), wherein the fluid is fed from cavity 1226 to cavity 232 of the jack 23 so as to close the door. The pressure fluid also causes jack 24 to close the catch 8 as the undercarriage is raised, while spring 18 closes the catch 17. In order to lower the undercarriage the connection of lines X and Y is again reversed; catches 8 and 17 are disengaged by jacks 11 and 20, respectively, and the above-described sequence is reversed.
Patent GB-1002465-A (GB)
Title: Method and apparatus for detecting corrosion in a pipe line
IPC: G01N17/00
Filed: 1964-02-04
Abstract: 1,002,465. Testing a pipeline for corrosion and for defects in protective sheathing. CAMCO Inc, Feb. 4,1964 [April 26, 1963], No. 4648/64. Heading G1N. The currents which flow into and along the metallic wall 1, Fig. 2, of a protectively coated pipe line, from a cathodic protection system are monitored for inhomogeneities arising from corrosion, or sheathing defects, by a coil which is made to traverse the line. The coil 20. which may be helical or annular is spring mounted in an assembly with batteries 23, an amplifier 21, and a recorder 22, the assembly being propelled by line pressure on a flexible cupped disc 44. The assembly includes a wheel 47 for monitoring distance or sonde position, and a generator 40 driven by the wheel for re-charging the batteries. Separate coils monitoring different sectors of the periphery are described with reference to Figs. 4 and 6 (not shown), and a coil on a radical core for circular scanning is described with reference to Fig. 7 (not shown). Ripple pick-up by the annular coil is referred to.
Patent GB-707689-A (GB)
Title: Improvements in or relating to set-squares
IPC: G01B3/56
Filed: 1952-02-21
Abstract: 707,689. Set squares. BORNEMAN, H. G. Feb. 21, 1952, No. 4661/52. Class 97(3) In a triangular set square in which the ends of the hypotenuse are arranged to slide along the shorter sides of the set square, the hypotenuse 1 is displaceably connected at each end with the short sides of the set square which sides are provided with seals having a common zero and formed by linearly plotting as points along each of said sides the sine values of the angles from 0 degrees to 45 degrees, whereby the angle enclosed between the hypotenuse and one short side is indicated on the scale on said side by a mark adjacent the end of on the other short side by a mark adjacent the other end of the hypotenuse when the angle is less the hypotenuse connected to said side, when the angle is greater than 45 degrees, and on the scale than 45 degrees. As shown the hypotenuse arm 1 has semi-circular ends sliding in grooves in the short side arms 2, 3, the centre points 5 of the semi-circular ends constituting said marks. In another form, the short sides do not extend beyond the 45 degrees mark, and the hypotenuse arm 1 has cam surfaces which are accommodated in the recesses in the short side arms when the angle approaches the limits 0 degrees and 90 degrees.
Patent GB-117425-A (GB)
Title: Improvements in the Aprons of Photographic Film-drying Reels.
Inventor: SCOTT NEWTON LIVINGSTONE
IPC: G03D15/02
Filed: 1918-03-19
Abstract: 117,425. Scott, N. L. March 19, 1918. Sheet-metal chains.-An apron, which is arranged to separate successive convolutions of a photographic film when the film is wound upon a reel for drying, comprises cross-bars b secured at their ends in sockets f formed at the ends of flexible sheet-metal links connected together by wire loops h engaging notches l. The ends j of each loop h pass through a washer k engaging slots n in the adjacent links. The sockets f, which serve to space apart successive layers of the apron on the drying-reel, are strengthened by wooden blocks d. The total length of each sheetmetal link is twice the pitch of the cross-bars b, and the abutting ends of the links are rounded so that they roll freely on one another. The flexible central portion of each sheet-metal link is formed of two thicknesses c, q, of metal.
Patent GB-792671-A (GB)
Title: Improvements in or relating to spring interior mattresses
Inventor: HICKS RICHARD BERNARD
IPC: H05B3/34
Filed: 1955-02-17
Abstract: 792,671. Electrically-heated mattresses. HICKS, Ltd., B. Feb. 16, 1956 [Feb. 17, 1955], No. 4828/55. Class 39(3) [Also in Group XIV] A resistance heating wire 10 coated with polythene is incorporated in one face of a spring interior mattress, the said face having the higher degree of heat insulation in its padding for winter use. The resistance element is in a plurality of separately operable sections' controlled by a switch 9. As shown, for a double mattress, two elements, each with its own control switch, are used. Each element has a central tapping 11, so that its two sections may be switched in separately or together in series or parallel.
Patent GB-618958-A (GB)
Title: Improvements in or relating to fastenings for locks and latches and other purposes
IPC: E05C1/16
Filed: 1946-02-15
Abstract: 618,958. Latches. BIALKOWSKI, L. S. Feb. 15, 1946, Nos. 4832/46 and 28414/45. [Class 44] A door latch comprises a latch casing a, Fig. 1, recessed at h, a sliding latch frame c, fixed to the latch bolt band orifices at g, a sliding bar e recessed at i and a ball f selectively to engage one of the members a or e with the middle one c. The sliding bar e is mounted on the latch frame c and carries an arm l loaded by a spring j. The latch is shown in the locked position, the ball f locking the frame c to the casing a. A rotatable cam m on the handle spindle engages the arm l of the slidable bar e moving it to allow the ball to pass into the recess i and free the latch frame which is retracted by engagement between the arm l and a stop pin o<1> on further rotation of the cam. The recesses h, i are shaped to cause the ball to move to the required position. The latch springs n bear against a sliding plate o which. bears on the cam to return it, when released, to the original position. The bolt is retained retracted when the door is opened by a spring- loaded hook member p allowed to engage in a recess i<1> in the latch by the outward movement of a spring-loaded auxiliary bolt r. The bolt is ,shot when the door is slammed to move the auxiliary bolt inwardly. The bolt may be deadlocked by turning the cam clockwise so that the nose g engages the orifice c<1> in the bottom of the frame c where it is retained by the engagement between the nose m<1> of the cam and the notch u on the plate o.. The bolt may be retained in the fully retracted position by turning the cam in the opposite direction. The sliding bar e and the ball f may be replaced by a catch w, Fig. 6, pivoted to the frame c, normally engaging a recess x in the latch case and released by the pressure of the cam on the other arm v<1>.
Patent GB-1502481-A (GB)
Title: Clamping and limiting circuit
IPC: H04N9/455
Filed: 1975-02-05
Abstract: 1502481 Clamping and gating circuits INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA SpA 5 Feb 1975 [6 Feb 1974] 4837/75 Heading H3T An oscillatory signal 9, Fig. 1, is gated by a transistor 8 to an output 16, 17 under the control of pulses 1 which are clamped, both above and below, by a Zener 5, the lower clamp being the diode forward drop and the upper clamp the Zener voltage. Thus taking the diode forward drop to be 0À6 v., and the base-emitter drop of the transistor 8 before conduction occurs, to be 0À6 v. also, providing the signal 9 does not have a peak-to-peak swing of more than 1À2 v., and assuming that the gating pulse 1 has a swing greater than the Zener voltage, transistor 8 only conducts, to pass the signal 9 to the output 16, 17, when the gate signal 1 is at its high level. The embodiment shown is described with respect to a television receiver for gating a reference signal 9 of 4À43 Mc/s., to which the collector of the transistor 8 is tuned, by a lineflyback pulse 1.
Patent GB-554770-A (GB)
Title: Improvements in implements for removing ash and cinder from fire grates
Filed: 1942-04-14
Abstract: 554,770. Shovels. DAVIES, E. April 14, 1942, No. 4896. [Class 6 (ii)] A shovel or scoop is provided with a cinder-sifter consisting of a rod 3 having teeth 4 and supports 5 slotted for engaging the sides of the shovel. The teeth rest on the base 1 so that they rise to allow ashes &c. to be scooped up but fall back to retain cinders during emptying. They may be integral with, or individually pivoted on the rod. The holes in the support are inclined to and larger than the rod to allow for fixing to sloping shovel sides. Set-screws 7 or wing-nuts, and screwed knobs or clamps fix the parts in position. A grid or net-work may replace the fingers.
Patent GB-591601-A (GB)
Title: Improvements relating to filing and index systems
IPC: B42F17/00
Filed: 1945-02-28
Abstract: 591,601. Visible indexes. BULLEN, J. A. Feb. 28, 1945, No. 5012. [Class 146 (i)] In a visible index system in which a tablet or sheet is slotted to receive and hold slips in overlapping formation by means of tongues thereon, means are provided on the rear face of the sheet for covering the tongues, which means extend only over that portion of the sheet where the tongues are situated. The tablet A<1> is slotted at C' to receive and hold the tongues G of slips E and slotted at J to receive additional tongues H for sliding the slips on the tablet when the tongues G are withdrawn. Two backing strips K, each covering one set of slots C' are secured by adhesive at their sides K' and K<2>. Two such tablets may be mounted back to back, the same strips K serving for both sheets. In a modification, the tablet acts as the backing for slotted strips, secured by adhesive on the outer edge only, the inner edge acting as a guide for the tongues H. Slotted strips may be mounted on both sides of the tablet. For enabling the strips to be secured permanently, the backing strip K, or the tablet in the modified form, may be coated with adhesive under the slots.
Patent GB-341311-A (GB)
Title: An improved brush for use with vacuum cleaning machines
IPC: A47L9/06
Filed: 1930-02-17
Abstract: 341,311. Vacuum cleaners. BUSBRIDGE, E. M., 157, Woolstone Road, Forest Hill, London. Feb. 17, 1930, No. 5217. [Class 8 (i).] A brush of square or triangular shape witl peripheral bristles is at tached to the hollow suction and operating arm by a ball and socket joint b, c. A band e of rubber &c. surrounds the bristles.
Patent GB-566576-A (GB)
Title: Improvements in and relating to induction coils and the like
IPC: H03K3/55
Filed: 1943-04-01
Abstract: 566,576. Thermionic valve circuits. DURHAM CABLES, Ltd., and STEEL, N. April 1, 1943, No. 5249. [Class 40(v)] The use of a mechanical interrupter with an induction coil is dispensed with by the provision of a grid-controlled gas-filled discharge device, the grid control being such that when a condenser is charged the valve fires and discharges the condenser through the primary of the induction coil. The Figure shows a condenser 1 charged from the source 2 through resistances which may be lamps 3, 5 and discharged by a tube 4, the control grid of which is variably biassed to adjust the spark which may be observed by the neon tube 8.
Patent GB-163493-A (GB)
Title: Improvements relating to combined lavatory basins and baths
IPC: A47K1/10
Filed: 1920-02-21
Abstract: 163,493. Maine, M. B. S. Feb. 21, 1920. Baths fitted with labatory basins.-Supporting- arms, b<1>, b<2>, b<3>, b<4>, of the basin a are made in two parts united by adjusting nuts d with right and left hand threads. The arms may thus be adjusted to different sizes of bath and the basin may be moved sideways. The ends of the arms are fitted with rubber sleeves c to rest on the bath rim. Adjusting-nuts may also be inserted in the vertical portions of the arms.
Patent GB-234200-A (GB)
Title: Improvements in shedding mechanism for looms
IPC: D03C5/02
Filed: 1924-03-01
Abstract: 234,200. Pearson, H. March 1, 1924. Shedding-tappets; shedding- motions. - Cam plates for making rep borders wherein the border warp threads are raised for two consecutive picks and then lowered for two such picks are so constructed as to close the shed of the border warp threads at the beat up. For this purpose, each lifting-surface A is formed with an intermediate recessed portion B to lower the top shed for one pick, and interposed between the lifting portions, projections C are formed to raise the bottom shed for one pick. Two such " centre shed " cam plates are used. The lifting surfaces each open the shed for half a pick. Ordinary cams or tappets control the main or body warp threads.
Patent GB-1249606-A (GB)
Title: Circuit arrangement intended for the pulse keying of magnetron tubes for radar installations
IPC: H03K3/57
Filed: 1970-02-04
Abstract: 1,249,606. Transistor pulse circuits. FRIED KRUPP G.m.b.H. 4 Feb., 1970 [5 Feb., 1969], No. 5294/70. Heading H3T. . In a circuit for pulsing a magnetron 2 by discharging a pulse storage network 5 through an inductive coupling 1 by triggering a thyristor 4, turn off of the thyristor at the end of the pulse is ensured by arranging for the triggering circuit to close a switching device 10, in parallel with the pulse storage network and separated therefrom by a de-coupling device 12. Thus, the charging circuit 6 is short circuited until after the pulse is terminated. The switching device 10 may comprise a transistor, held conducting by a pulse 8 of sufficient duration from triggering circuit 9, or by a pulse from a separate monostable circuit triggered by 9. Alternatively, a transistor switch may be controlled by a bistable circuit which is set and reset by a differentiating circuit which detects the leading and trailing edges of the pulse 8, or in another alternative (Fig. 5, not shown) the differentiating circuit triggers on a thyristor switch at the leading edge of a pulse and turns it off at the trailing edge by a transformer in its cathode circuit. The decoupling device 12 may comprise a diode or a resistor which forms part of a charging resistor. In Fig. 8 (not shown) the output pulse length may be varied by switching different capacitors in network 5 and the length of pulses 8 is correspondingly varied by changing the time constant of an astable multivibrator (9) producing them. An inductor 14 protects the thyristor from damage due to triggering pulses 8 applied when it is already on, as a result of " charging phenomena ".
Patent GB-310128-A (GB)
Title: Improvements relating to valve actuating mechanisms for internal combustion engines
IPC: F01L1/12
Filed: 1928-02-20
Abstract: 310,128. Abingdon Works, Ltd., and Bramley, T. B. Feb. 20, 1928. Valve gear. - The rocker p is mounted in a knife-edge or unilateral bearing comprising an abutment e recessed to accommodate a rounded projection on the rocker, or one or more balls or rollers f inserted between the rocker and abutment. The pushrod d is fitted with a spring j serving to press the rocker against its fulcrum; Other springs m may also be provided for this purpose. Specification 160,538 is referred to. Regulating is effected by means of an adjustable member h screwing into the rocker.
Patent GB-425722-A (GB)
Title: Improvements in or relating to sorting or grading or recording apparatus
IPC: B07C5/30
Filed: 1934-02-19
Abstract: 425,722. Weighing-apparatus. BEST, C., and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. Feb. 19, 1934, No. 5428. [Class 143] In a weighing-apparatus controlling the actuation of counting or registering mechanism means are provided to render the counting or registering mechanism inoperative when an article (for example, a cigarette) is not passed to the weighing-apparatus. As the cigarettes 1 are transferred to the scale pan 7 by a fluted drum 4 and stripper plate 24, they pass beneath a pivoted detector plate 5 carrying a pawl 16. After each cigarette is weighed, a cam follower 18 is allowed by a cam 20 to descend and operate a counting mechanism 21 such as that described in Specification 425,721. If a cigarette is absent the pawl assumes the position shown and prevents the cam follower 18 from descending and consequently the counting mechanism 21 is not operated. The detector plate 5 presses the cigarette into its flute as it passes, but is removed (to allow the stripper plate 24 to operate) by the pressure of the follower 18 upon an inclined surface on the pawl. The scale pan has a resilient outlet at the bottom through which the weighed cigarette is forced by the arriving cigarette.
Patent GB-459820-A (GB)
Title: Process for stabilising cellulose esters
IPC: C08B3/28
Filed: 1936-02-24
Abstract: Organic esters of cellulose are stabilized by treatment at temperatures between 50 and 150 DEG  C. with aliphatic and/or aromatic hydrocarbons, alcohols, ethers, or ketones, which are non-solvents for cellulose esters and which neither are nor become acid in the process, or the chlorinated derivatives of these compounds.  The process may be carried out under normal or excess pressure.  In examples, (1) secondary cellulose acetate is treated for 6 hours with ethyl alcohol at 70 DEG  C., (2) primary fibrous cellulose acetate is heated to 120 DEG  C. with benzene for 25 mins., and (3) primary fibrous cellulose acetate is heated with methyl alcohol to 110 DEG  C. for 35 mins.  Specifications 411,260 and 415,329 are referred to.