baber/WOPTO huggingface dataset:
Patent GB-1037430-A (GB)
Title: Improvements in and relating to the measurement of circular dichroism
IPC: G01N21/19
Filed: 1963-11-27
Abstract: 1,037,430. Polarizing apparatus. J. BOR. Nov. 12, 1964 [Nov.27, 1963], No.46919/63. Heading G2J. [Also in Division G1] To compare the absorption, by a material, of right-handed and left-handed circularly polarized radiation, beams of the two kinds of radiation of equal intensity are passed alternately by means of a chopper 11 through the material 7 and their intensities measured afterwards by a photomultiplier 9. The circularly polarized radiation, in this embodiment light, is created from plane polarized radiation from the polarizer P by means of the bire - fringent plate 1, whose axis is at 45 degrees so that of the polarizer, and the two birefringent wedges 2, 3 arranged as shown in Fig. 8. The optical axis of the wedges is perpendicular to that of the plate 1, so that any phase difference introduced between the ordinary and extraordinary rays by the plate is opposite in direction to any introduced by the wedges. By suitable adjustment of the relative displacement of the wedges and hence their combined optical thickness, a resultant positive or negative phase difference of #/2 can be introduced to produce right or left-handed circularly polarized radiation. To produce the two beams two sets of the wedges 2, 3 are used having opposite displacement to give the required Œ#/2 phase differences, in Fig. 8 one set is behind that shown. If both the wedges 2 are arranged pointing in the same direction then one of the wedges 3 must move upwards and the other downwards, if the wedges 2 are arranged pointing in opposite directions then the wedges must move in the same direction. The wedges 3 are mounted on screwjacks or slides and can be interconnected by gears or levers to achieve simultaneous displacement. In the first arrangement a single large wedge may take the place of the two first wedges 1. If the polarization is exactly circular then that portion of it reflected onto a rotating analyser 41 by two internally reflecting prisms 40, arranged so as not to change the polarization, will create constant amplitude pulses in a detector 43. Any change in amplitude, as would be produced by elliptically polarized radiation, creates a cyclic signal which is used to readjust the displacement of the wedges by servo motor 45. The plate 5 contains apertures to equalize the intensity of the beams before their passage through the material.
Patent GB-1492586-A (GB)
Title: Roof support systems for underground mine workings
IPC: E21D23/08
Filed: 1974-10-31
Abstract: 1492586 Advancing mine roof support systems K M GROETSCHEL 31 Oct 1974 [5 Nov 1973] 47094/74 Heading E1P In an advancing mine roof support system for an inclined seam a row of supports 1, 2, 3 are interconnected by means 14, such as a chain extending along the conveyor 38, through steering devices 9 spaced therealong each steering device 9 being associated with one of the supports to allow lateral movement and a power-operated adjustment device 22 adapted to move the means 14 and hence the devices 9 in a direction generally lengthwise of the means 14; alignment devices 23, 24, 25 being also provided for individually aligning one support in a desired forepoling direction. The support 1 is connected to the means 14 by an additional brace in the form of a telescopic jib 16 which may contain a conveyor advancing jack 27 in addition to the usual ram 26. The steering device 9 includes parallel bars 10 and an aligning extension 12 adapted to co-operate with wedges 13, the device operating as disclosed in Specification 1287096 and the frame A of the supports being provided with guide members 8 bearing against the associated frame B. In a modification, see Fig. 3 (not shown), the unit 22 above is replaced by a modified unit [22'] secured to and aligned with the connected means [14']. For details of securing the jib to one of the supports and of an adjustment device the Specification and Figs. 2 and 4 (not shown) should be referred to respectively.
Patent GB-474013-A (GB)
Abstract: 474,013. Photo-mechanical printing- surfaces. DEUTSCH, F., DEUTSCH, P., and DEUTSCH, E., (trading as DEUTSCH, G., [Firm of]). Jan. 13, 1937, No. 9563. Divided application. [Class 98 (ii)] Apparatus for producing outlines for photomechanical reproduction on rollers for textile printing consists of frames to which a positive and a negative of the design are secured, the frames being superimposed with the positive and negative in coincidence and are frame displaced parallel to itself by the desired width of the outline and caused to perform a continuous circling movement during which an exposure is made. In the form shown, the apparatus consists of a fixed frame P<2> carrying the negative Ne, and a movable frame P<1> for the positive P‹. The frame P<1> is carried by eccentrics D<1> which are mounted on eccentrics E<1> which may be coupled together by pins F<1>. The frame P<1> is first adjusted by screws S<1> so that the positive and negative are in register ; the eccentrics D<1> are then uncoupled from the eccentrics E<1> and rotated to produce the desired width of outline ; the eccentrics are then coupled by the pins F<1> and rotated by the gearing Sr, Sch which causes a circling movement of the positive. The sensitive film F is arranged between the positive and the plate P<1>.
Patent GB-1075517-A (GB)
Title: Oven cleaner and method of using the same
IPC: C11D7/06
Filed: 1964-09-08
Abstract: A method of cleaning ovens or grills comprises applying to the surface while at a temperature of at least 140 DEG  F. a liquid aqueous composition containing water in an amount of at least one half of the composition by weight and 1-10% of at least one alkali metal hydroxide, leaving the composition on the hot surface for a time and then removing it therefrom.  The composition may also contain up to 5% by weight of either furfuryl or tetrahydrofurfuryl alcohol, a humectant such as a glycerol or a glycol or mixture thereof, and a surfactant, and may be in aerosol form with a propellant.  Suitable surfactants include sulphate esters, alkyl and aryl sulphonates, amines, and quaternary ammonium compounds or, as exemplified, sodium dodecyl diphenyl ether disulphonate plus the ammonium salt of the sulphate ester of an alkylphenoxy polyoxyethylene ethanol.
Patent GB-1441116-A (GB)
Title: Process for the preparation of ethylene polymers by both free- radical and ionic polymerisation reactions
IPC: C08F10/00
Filed: 1973-10-11
Abstract: 1441116 High pressure Ziegler polymerization ETHYLENE PLASTIQUE 11 Oct 1973 [13 Oct 1972] 47562/73 Heading C3P Ethylene is polymerized at a pressure of at least 1000 bars and a temperature of 220 to 270 C. in the presence of a catalyst comprising (a) a titanium trichloride, (b) a silicone oil or a titanium alkoxide and (b) an alkyl-aluminium compound, e.g. Et 2 AlCl, the dwell time of the catalyst in each reaction zone being at most 150 seconds, the reaction occurring by a mixed free-radical/co-ordination mechanism, the proportion of free-radical products, indicated by decreasing relative branching index, normally increasing as any one of the following variables increase: dwell time, temperature, Al/Ti ratio and Ti alkoxide/TiCl 3  ratio. The reaction may be carried out in several zones and/or reactors. The monomer can be copolymerized with, e.g. propylene or butene-1 and hydrogen may also be included.
Patent GB-1361270-A (GB)
Title: Transparent glass beads having anti-reflection coatings and their use in retroreflective constructions
IPC: C03C17/00
Filed: 1971-10-13
Abstract: 1361270 Retroreflective coatings MINNESOTA MINING & MFG CO 13 Oct 1971 [9 Nov 1970] 47741/71 Heading B2E [Also in Divisions B5 and G2] A retroreflective element (see Division G2) is prepared in Example 1 by embedding glass beads 1 into the polyethylene layer of polyethylene coated paper. The resultant web is vapour coated with aluminium 3, and the surface with the protruding beads knife coated with a layer of a solution containing an acrylic resin, a plasticiser and pigment, e.g. TiO 2 . After this layer is cured, the so-formed surface is laminated to a pressure-sensitive adhesive coated film, e.g. of polyester, and the polyethylene-coated paper stripped from the other surface. The exposed surfaces of the beads are then vacuum vapour coated to form an antireflective layer 5, e.g. using cryolite. In Example 2, a paper web is coated with styrene in xylol, the solution also containing benzoyl peroxide and di-t-butyl peroxide, cured, then coated with a composition containing polyvinyl butyral and carbon black, and finally coated with a composition comprising a polyester, a butylated melamine-formaldehyde resin in butarol and xylnol, the acetate of the monobutyl ether of diethylene glycol, carbon black and a coconut oil alkyd resin. Glass beads coated with silver are then coated onto the surface and allowed to partially embed. The paper web is then removed and a pressuresensitive adhesive carried on a polyethylene coated release paper laminated to the surface so exposed. The entire construction is then passed through a dilute solution of H 2 SO 4  and K 2 Cr 2 O 2  to remove the exposed silver on the beads, and the beads then vapour-deposited with cryolite.
Patent GB-1237267-A (GB)
Title: Measuring instrument
Inventor: JENNINGS ALFRED PETER HENRY
IPC: G01F1/00
Filed: 1968-10-10
Abstract: 1,237,267. Measuring fluid-flow. B.P. CHEMICALS Ltd. Oct. 8, 1969 [Oct. 10, 1968], No.48011/68. Heading G1R. In a rate of fluid-flow measuring apparatus means control the admission of a fluid to a tube 1 to move a piston 2 and automatic means comprising photo-electric detectors 8, 7, initiate a timer when the piston 2 passes one point on the tube 1 and stop the timer when the piston 2 passes a second point on the tube 2. A mercury seal 5 is provided on the piston 2. One or more timing slits 10 may be provided along the tube 2.
Patent GB-1511000-A (GB)
Title: Thermoplastic compositions containing chlorinated polyethylenes
IPC: C08F8/20
Filed: 1975-11-28
Abstract: 1511000 Chlorinated polyethylene compositions HOECHST AG 28 Nov 1975 [28 Nov 1974] 49002/75 Heading C3M A thermoplastic composition comprises: (a) 70-95% by weight of a vinyl chloride polymer, e.g. polyvinyl chloride, and (b) 5-30% by weight of a chlorinated polyethylene, wherein the chlorinated polyethylene has (i) a chlorine content of 38-42% by weight, (ii) a residue value of 55-70% by weight (measured by extraction with a 1 : 1 mixture of toluene/ acetone and (iii) a swelling value of less than 1 % by weight, measured in methylcyclohexane, and has been prepared from a polyethylene having (iv) a density of 0À955-0À965 g/cm<3>, (v) a melt index of 20-65g./10 min. determined as MFI 190/5 (DIN 53735), and (vi) a reduced specific viscosity of 1-2 dl./g., measured according to ISO/R 1191 with a 0À1% solution in decahydronaphthalene at 135 C., by chlorinating in water or aqueous hydrochloric acid at temperatures at least partially above 90 C. and not higher than 120 C. At least the last 10% by weight of the chlorine may be added at 110-120 C. and suitably all the chlorination may be carried out at this temperature. The reaction medium may also contain silicic acid or a siloxane oil.
Patent GB-1360459-A (GB)
Title: Process for resist printing
IPC: C07D213/82
Filed: 1971-10-21
Abstract: 1360459 A pyridone CIBA-GEIGY AG 21 Oct 1971 [23 Oct 1970 30 Sept 1971] 49003/71 Heading C2C [Also in Divisions C4 and D1] 3 - Cyano - 6 - hydroxy - 4 - carboxymethyl- 2-pyridone is prepared by saponification of its ethyl ester.
Patent GB-1490536-A (GB)
Title: Ship having a mechanism for moving its cargo platform
IPC: B63B25/00
Filed: 1974-11-13
Abstract: 1490536 Toothed gearing; screw-and-nut gearing NAVIRE CARGO GEAR INTERNATIONAL AB 18 Sept 1975 [13 Nov 1974] 49116/74 Heading F2Q [Also in Divisions B7 and E2] In a worm and rack mechanism for moving a cargo platform on a ship, the rack is composed of evenly spaced pads secured along each side of the platform, and the worm forms part of a screw winch, rotatable in either sense of rotation, in which the worm consists of a tubular core member 15, Fig. 3, to which has been secured a bar member 16 wound to form a helix for mating with the spaced pads. Two opposite sides of the platform may each be provided with a worm and rack. The pads may consist of rollers 12, Fig. 4. The worm and rack may be such that the rack can be moved only when the worm is driven in rotation, and that neither gravitational nor inertia forces, e.g. due to ship movements at sea, can cause the rack to move by its action upon the worm. The cargo platform may comprise hatch covers, ramps or other load-carrying or working platforms which may be moved horizontally along a deck or some similar structure in a ship. The winch may comprise a drive motor 20 of hydraulic type, at each end of a worm screw 14 mounted on shafts 17, in bearings 18, disengageably connected by couplings 19, and provided with disc brakes 21 and thrust bearings 22.
Patent GB-1046180-A (GB)
Title: Method for preparing carbamates
IPC: C07C271/06
Filed: 1964-12-03
Abstract: N-(b -Haloalkyl) carbamate esters are prepared by reacting an N-halocarbamic alkyl, cycloalkyl or aryl ester with an unsaturated organic compound having at least one nonaromatic carbon-carbon double bond, e.g. under free radical-producing conditions such as actinic radiation or the presence of a peroxidic compound or azo-diisobutyronitrile.  Solvents may be used.  Examples react ethyl chlorocarbamate with cyclohexene, isobutene, pent-l-ene, oct-l-ene, 2-methylpent-l-ene and 4-vinyl-cyclohexene to give the corresponding adducts; other products are specified.  Reference is made to conversion of the products to isocyanates, and the production of OCN.CH2CHClCH2NCO and OCN.CF2CFClCFClCF2.NCO is mentioned.
Patent GB-1131258-A (GB)
Title: Process for the homo- and co-polymerization of olefins
IPC: C08F4/64
Filed: 1965-11-22
Abstract: 1,131,258. Polymerization catalyst for alphaolefins. SNAM S.p.A. 22 Nov., 1965 [3 Feb., 1965], No. 49558/65. Heading C3P. A catalyst which is the interaction product of a transition metal compound and a linear aluminium iminic polymer containing at least four repeating units of the general formula in which R is an alkyl, aryl or cycloalkyl group, is used to polymerize alpha-olefins. Specified alpha-olefins are styrene, ethylene, propylene, butene-1, pentene-1, hexene-1, 3- methyl - pentene - 1, and 4 - methyl - pentene- 1. Exemplified catalysts are formed from TiCl 4 , TiCl 3 <SP>1</SP>/ 3 AlCl 3 , TiCl 3  and the n-butyliminic polymer or the ethyl-iminic polymer. In addition to homopolymers, copolymers of ethylene and propylene are exemplified. The polymers may be fractionated by solvent extraction.
Patent GB-1488158-A (GB)
Title: Corrosion-resistant immersion heater
IPC: H05B3/78
Filed: 1974-11-20
Abstract: 1488158 Immersion heater K TAKAYASU 20 Nov 1974 [29 March 1974] 50173/74 Heading H5H A corrosion resistant electric immersion heater comprising a plurality of metal sheathed powder insulated heating elements 1 disposed in channels 15a, 15b, defined in the two halves 14a, 14b of a corrosion resistant cover 14, has a liquid tight seal formed about a supply cable 12 where it enters the cover 14, the seal being formed by metal tube 20 tightly fitted about the cable 12, a heat resisting elastic tube 21 on metal tube 20, theremal contraction resin tubes 22 on the ends of tubes 20, 21, a thermal contraction resin tube 23 fused to tubes 22, and a metal tube 24 welded to the cover 14 and provided with annular grooves 25 by rolling which compress the tube 23 against the elastic tube 21. The metal sheaths, the cover 14, and the metal tubes 20, 24 are all made of corrosion resistant material, e.g. titanium, stainless steel, tantalum, or zirconium. The ends of the resistance wire 4 of each element 1 are connected to terminals 5a, 5b. The left hand ends of the three elements 1 are delta connected by electric conductors 7 sandwiched between nuts 8a and mica packing pieces 9a on the terminals 5a. Insulating spacers 6 between the left hand ends of elements 1 and the terminals 5a are rigidly connected by a thermal contraction resin end cup 10a. The right hand terminals 5b are connected to respective lead wires 11 of the cable 12, and are provided with individual thermal contraction resin end caps 10b. The two halves of the cover 14 are welded together along their edges 19a, 19b and along the flat surfaces 16a between the channels 15a, 15b. The ends of the cover 14 have flat surfaces 18a, 18b, and are wider and deeper than the remainder of the cover. The peripheral edges 19a, 19b act as heat dissipating fins. The left hand end of the cover may have a corrosion resistant reinforcing strip wleded to its edges 19a, 19b. A polyester premix 29 embeds the contraction resin end caps 10a, 10b. In Fig. 6 (not shown) the three metal sheathed elements in the cover 14 are U-shaped. The heater may be suspended by hook 28 or may be provided with a pair of parallelogram shaped frames 27 by means of which it may be rested on the bottom of a tank with its major surfaces inclined to the horizontal so that air bubbles produced may be readily dispersed. The thermal contraction resins may be p.v.c. or polyethylene.
Patent GB-1169565-A (GB)
Title: Catalyst and Catalytic Processes
IPC: C07C17/152
Filed: 1966-11-10
Abstract: 1,169,565. Oxychlorination catalysts. MONSANTO CO. 10 Nov., 1966 [10 Nov., 1965], No. 50462/66. Heading B1E. [Also in Division C2] Oxidative chlorination catalysts comprise cuprichalide e.g. CuCl 2  and an activated Al 2 O 3 . carrier which are combined and heated to at least 350‹C for at least 3 hours. The Al 2 O 3  and CuCl 2  may be used to impregnate Al 2 O 3 . The heat treatment is preferably effected in nitrogen. Additionally the catalyst may contain Su, Cd, Sb, the alkali metals and alkaline earth metals as halides. Preferred halides are CuC1 2 , CuF 2  and CuBr 2 .
Patent GB-1475405-A (GB)
Title: Method and apparatus for making a bespoke shoe manufacturing  last
IPC: A43D1/00
Filed: 1975-11-21
Abstract: 1475405 Moulding shoe lasts H THALMANN 21 Nov 1975 [21 Nov 1974] 50511/74 Heading B5A In a method of producing a shoe manufacturing last for an individual foot, the latter 10 is pressed against a grid 18 composed of parallel bars 20 with slotted elements 24 whereby the elements are forced into a pad 16 of plastically deformable material on a pedestal 6 whereby a plantar foot shape is provided therein. Pre-moulded toe and heel caps 40, 41 are fitted to the foot which is enclosed by elastically deformable sheet material 62 sealingly attached to a two-part frame 51, 52 hinged at 57 to the pedestal. The sheet material is drawn by suction into intimate contact with the foot, and material is cast over the assembly to provide a two-part mould shell which is then placed on a similar pedestal and material cast therein to form the last. The pad may include cork or rubber granules in a plastic binder, and the mould shell may comprise thermosetting or thermosplastic material or plaster. The toe and heel caps are adjustably and removably mounted on the pedestal and are hinged at 81 and 91 respectively.
Patent GB-1084029-A (GB)
Title: Sequential timing device for controlling the durations of automatic operations
IPC: G05G21/00
Filed: 1965-11-29
Abstract: 1,084,029. Timed control of electric circuits. MOIST O'MATIC Inc. Nov.29, 1965 [Dec. 4, 1964], No. 50622/65. Heading G3T. [Also in Divisions D1 and F2] In a timing device for controlling for example, a washing machine or a water sprinkling irrigation system, and comprising a rotary shaft 6 for operating a selector valve or switch in a housing 4, rotation of the shaft 6 is interrupted for a predetermined time interval at each of a number of operative positions of the selector valve or switch, by the engagement with one of a series of stops 46 of an arm 18 secured to the shaft 6. The motor 19 continues to run when the arm 18 is arrested, since it is coupled to the shaft 6 through a slipping clutch device. As soon as the arm 18 engages a stop 46 a switch 36 is closed by a cam 30 to energize a timing motor 28 which rotates a gear 21, having a hub 22 threaded on to a fixed bushing 7, so that the hub 22 moves axially and bears against the hub 34 of the cam 30 to move the shaft 6 axially. Thus after a predetermined period the arm 18 is disengaged from the first stop 46 and is moved to the next. The resumption of rotation of the shaft 6 causes the switch 36 to be opened by the cam 30 so that the motor 28 stops and the hub 22 is returned to its initial position by a spiral spring 23. The stops 46 are adjustable axially for varying the periods for which the shaft 6 is halted at the various operative positions of the valve or switch in the housing 4.
Patent GB-1075519-A (GB)
Title: Constant-pressure pinch rolls for continuous casting
IPC: B22D11/128
Filed: 1964-12-11
Abstract: 1,075,519. Continuous casting-machines. UNITED STATES STEEL CORPORATION. Dec. 11, 1964 [Dec. 20, 1963], No. 50627/64. Heading B3F. Apparatus for maintaining a constant pinch roll pressure in a continuous casting system comprises a pair of fixed bearing blocks and a pair of reciprocable bearing blocks movable toward and away from said fixed blocks, at least one pinch roll journalled in each of said pairs of blocks between which the casting passes, means for continuously measuring the force transmitted to the fixed bearing blocks from the casting, means for transmitting a signal which is proportional to the difference between said measured force and a preselected force, and means for moving said reciprocable bearing blocks in response to said signal. The reciprocable bearing blocks 28 carrying the pinch roll 31 are urged towards the opposing pinch roll 30 by compression springs 42. The blocks 28 are also connected to piston-rods 54 of cylinders 52 which oppose the springs and are connected across the length of the roll by equalizing means including toggles 72. Strain gauges 33 transmit a signal to a differential generator 82, the output of which controls the pressure of fluid supplied to cylinders 52 in accordance whether the pressure between the rolls is greater than or less than the preset roll pressure, thus moving the roll 31 away from the roll 30 against the spring pressure or allowing the spring pressure to move the roll 31 toward the roll 30, to maintain constant the pressure between the rolls. The spacing between the rolls is preset by screws 44 operated by hand wheel 46.
Patent GB-506698-A (GB)
Abstract: 506,698. Refractory substances. STAATLICHE PORZELLAN MANUFAKTUR BERLIN. June 28, 1938, No. 19112. Convention date, June 30, 1937. [Class 22] Materials of great hardness and electrical resistance are prepared by mixing 85-50 parts by weight of a pure, alkali-free, non-fused alumina, with 17-57 parts of pure hydrated kaolin, and, if desired, a little aluminium hydroxide, and burning the mixture at temperatures between 1700‹ and 1800‹ C., after shaping it to form articles such as insulators, ball mills, grinding balls, mortars, nozzles, heating tubes, crucibles and pyrometer tubes.
Patent GB-1029350-A (GB)
Title: Portable dictating machine
IPC: G11B5/00
Filed: 1964-12-14
Abstract: 1,029,350. Dictating machines. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 14, 1964 [Dec. 20, 1963], No. 50718/64. Heading G5R. In a portable dictating machine employing a belt 26, the belt is guided by rollers 39-42 movable to an extended position for loading. With sides 18, 19 open, the rollers take up the position shown in Fig. 3 and the belt is loaded through slots 56, 57. The sides 18, 19 are then closed, and the belt forms itself in a double loop around the drive roller 38 with a portion of the belt pressed against transducer 25 by pad 81 as shown in Fig. 2. The drive roller 38 is driven by means of a motor housed inside the roller, Fig. 4 (not shown), the motor also driving a lead-screw 31 for moving the transducer across the head. The position of the transducer is indicated by a pointer 33. In order to tension the belt, roller 40 is mounted on a spring-loaded arm, pivoted about bearing 60 for roller 39.