baber/WOPTO huggingface dataset:
Patent GB-1422676-A (GB)
Title: Production of polyesters
IPC: C08G63/64
Filed: 1973-10-04
Abstract: 1422676 Polyester resins GENERAL ELECTRIC CO 4 Oct 1973 [29 Nov 1972] 46285/73 Heading C3R A high molecular weight, linear poly (1,4- butylene terephthalate) resin is prepared by (a) heating a bis ester of 1,4-butane-diol and terephthalic acid at from 250-275‹ C. under a vacuum of from 0À1-25 mm. Hg., and removing the 1,4-butane-diol as it is formed, and continuing the heating until the intrinsic viscosity of the intermediate polyester product reaches at least 0À65 dl./g., as calculated from the measured value in a 60 : 40 mixture of phenol and tetrachloroethane at 30‹ C.; (b) adding from 0À5-3 moles of a diaryl carbonate per 100 moles of the intermediate polyester product; and (c) applying a high vacuum of from 0À01-1À0 mm. Hg. and continuing the heating until the intrinsic viscosity of the polyester product reaches at least 1À2 dl./g. Suitable diaryl carbonates are diphenyl carbonate, di-o-tolyl carbonate and di-#-naphthyl carbonate. The bis-ester is preferably prepared by reacting 1,4- butane-diol and dimethyl terephthalate at a molar ratio of at least 2 : 1 under alcoholysis conditions. Preferably the alcoholysis is carried out at atmospheric pressure and step (a) is carried out in 2 stages by (i) heating the bisester under the specified temperature and vacuum conditions only until a prepolymer which has an intrinsic viscosity of at least 0À2 dl./g. and normally solid at 25‹ C. is obtained, cooling the mixture and recovering the solid prepolymer; and (ii) remelting the solid prepolymer and heating under the conditions specified in step (a) until the intermediate polyester product is obtained. The linear polyester may comprise up to 15 mol per cent of groups derived from other glycols, e.g. ethylene glycol, 1,3-propane diol and 1,4-dimethylol cyclohexane, and/or up to 15 mol per cent of groups derived from other dicarboxylic acids, e.g. isophthalic acid, succinic acid and naphthalene dicarboxylic acid. Uses.-Moulding powders either alone or mixed with other polymers and fillers such as glass filaments, wood flour, cloth fibres and clays, as well as conventional additives.
Patent GB-1504852-A (GB)
Title: Saddle-cloths
IPC: B68C1/12
Filed: 1976-11-09
Abstract: 1504852 Saddle-cloths for horses CARL FREUDENBERG 9 Nov 1976 [31 Jan 1976] 46539/76 Heading AIM The saddle-cloth shown in the Figure is formed of a needled non-woven fabric comprising undyed synthetic and semi-synthetic fibres between 6 and 12mm thick and having a weight of 1500 to 2000 gm/m<SP>2</SP>, the fabric being impregnated over the surface facing away from the horse with a layer of binder to a depth of up to 3mm. The binder is coloured by dyeing, and comprises synthetic rubber applied by padding to a fabric formed by carding. The binder may be foamed.
Patent GB-1284088-A (GB)
Title: Device for preheating granular and/or lumpy material to be treated in a kiln, by means of gases from the kiln
IPC: F27D13/00
Filed: 1969-09-22
Abstract: 1284088 Shaft preheaters KLOCKNERHUMBOLT-DEUTZ AG 22 Sept 1969 [20 Sept 1968] 46582/69 Heading F4B A cross-current shaft preheater for granular &c. material, e.g. limestone, dolomite or magnesite, being fed to a kiln comprises gas chambers 2 and 3 divided by louvred partitions 4 from the charge column 1 and supplied alternately with hot waste kiln gases through ducts 6 controlled by slides 20, and one or more ridged gas distributers 7 with valves 22 at each end controlling passage of said gases back into the charge material. Ridged gas collectors 9 connected to an offtake 10 remove said gases at the top of the shaft and water is supplied through a spray device 14. Additional hot gases may be supplied through pipes 13 and dust collecting pockets 11 are discharged at 12. One or more inverted channels 18 or segmental arches 19 restrict the charge material shaft. In a modification (Fig. 2) the preheater comprises two feed shafts separated by a gas distributer chamber and flanked by gas collector chambers.
Patent GB-1354345-A (GB)
Title: Laminated dynamoelectric machine stator cores and method of stacking
IPC: H02K1/18
Filed: 1971-10-07
Abstract: 1354345 Stator cores of dynamoelectric machines GENERAL ELECTRIC CO 7 Oct 1971 [18 Jan 1971] 46612/71 Heading H2A   In a dynamoelectric machine stator having circumferentially spaced keybars 4, 5 supporting layers of punchings 7 making up a slotted stator core, such core comprises alternating first and second layers of punchings each punching, e.g. 20...22 being asymmetrical about its centre line so as to define a full tooth, e.g. 8, 26 on one side and a full slot cutout, e.g. 9, 25 on the other side, the punchings in the two layers having the sides with the cut-outs 9, 25 running circumferentially in opposite directions, and each pair of punchings in the two layers which overlap on the cut-out sides being disposed on a common keybar 4. This arrangement reduces the number of outside slot corners 23 and voltages that can be induced between two keybars from adjacent layers, and is applicable to punchings with any number of teeth, those with one, two, and three being exampled.
Patent GB-1473109-A (GB)
IPC: A47L11/10
Filed: 1973-10-05
Abstract: 1473109 Cleaning floors R G DIXON & CO Ltd 1 Oct 1974 [5 Oct 1973] 46685/73 Heading A4F [Also in Division G3]  A floor-treating machine has laterally spaced wheels driven by separate pulse-controlled traction motors, and means for recording the pulse trains to the motors and replaying the record to repeat the operation, and means for modifying control in dependence on sensing a wall, or other physical obstruction and the condition of the floor. As shown, Fig. I a floor-washing machine is mounted on wheels 2, 3, each driven through a gear-box by a motor 7, and castor wheels 4. A squeegee nozzle 11 is provided at each side with a protective wheel 12. The motors are powered from a storage battery, not shown, which also supplies a motor, (not shown), for scrubbing brushes 6. Manual steering and speed control is effected by a handle 9 actuating potentiometer 10 in a control circuit for the motors 7. A buffer 13 operates a stop switch when the machine hits an obstruction. The presence of a wall or other laterally placed obstruction is detected by spring-loaded arms 14 each positioning a potentiometer, (not shown) and the boundary between scrubbed and unscrubbed areas is detected by devices 15, Each device 15 comprises small rotating brushes having a clean water feed and small squeegees to the rear of each brush with a transparent return water pipe. The transparency of the water in the pipe is sensed by a light and photo-cell arrangement and is taken as a measure of dirtiness of the floor. The signals from the photo-cells are processed in an analog computer in accordance with formulae as set out in the Specification. The motors 8 are controlled, Fig. 8, by applying a fixed voltage to a field winding 41 and switching the supply through electronic switches 44. Manual control of each motor is effected through a delay network 46 by a pulse-generator 45 controlled by a potentiometer 10. The outputs of the pulsegenerators 45 are stored by a multi-track taperecorder 51 for replay to enable automatic operation of the machine. The outputs VW and VS of the wall and scrubbed boundary detectors is fed to logic units 52 which modify, through the delay units 46, the operation of the electronic switches 44 so that the machine follows the scrubbed edge. The outputs from the detectors are recorded during the manual mode.
Patent GB-1168646-A (GB)
Title: Method of Preparing Ethylene-Amide Copolymers.
Inventor: HURST JACK
IPC: C08F8/00
Filed: 1966-10-20
Abstract: 1,168,646. Preparing ethylene-amide copolymers. GULF OIL CORP. 20 Oct., 1966, No. 46937/66. Heading C3P. Copolymers of ethylene and an amide of an α,#-ethylenically unsaturated carboxylic acid are prepared, in finely divided form, by heating a copolymer of ethylene and an alkyl ester of said carboxylic acid at a temperature of at least 180‹ C. with at least a stoichiometric equivalent, with respect to the ester groups, of ammonia or a primary or secondary amine and from 1 to 10 equivalents of an alkali metal hydroxide per 100 equivalents of carboxylate alkyl ester groups, the starting polymer having up to about one equivalent of said ester groups per 3 equivalents of groups of the main polymer chain. The alkyl ester units of the starting polymer may be derived from acrylic, methacrylic, crotonic, isocrotonic, itaconic, fumaric, maleic, citraconic or mesaconic acid. Any carboxylate salt groups present in the final product can be converted to free acid groups by treatment with a mineral acid.
Patent GB-1240240-A (GB)
Title: Process for the production of a crepe yarn
IPC: D02G3/30
Filed: 1969-09-24
Abstract: 1,240,240. Crepe yarns. SOC. RHODIACETA. 24 Sept., 1969 [25 Sept., 1968], No. 47071/69. Headings D1F and D1W. A process for the manufacture of a crepe yarn constituted by continuous synthetic thermoplastic filaments is characterised in that there is imparted to the yarn a voile twist and the resultant yarn is then subjected to an operation of continuously overtwisting-fixing-untwisting, the overtwisting being in the same direction as the initial voile twist. The yarns may be made from polyamide or polyester e.g. polyethylene terephthalate and fabrics woven from these yarns exhibit the grain and relief pattern of conventional crepe woven fabric. The polyester filaments used are preferably multilobed filaments and the yarn is passed at a voile twist through a texturing frame for imparting hard-twist, in which it is given, continuously, an overtwist in the same direction as the voile twist; the overtwist is fixed by passing the yarn through an oven, and the yarn is finally untwisted. The yarn may be incorporated in a fabric with similar yarns or conventional yarns.
Patent GB-1401101-A (GB)
Title: Data storage device
IPC: G11C11/405
Filed: 1973-10-10
Abstract: 1401101 F.E.T. data storage N C R CORP 10 Oct 1973 [16 Oct 1972] 47230/73 Heading H3T Gate capacitance 43 of F.E.T. 44 stores data which is received via write F.E.T. 28 and read out by read F.E.T. 36, and which is permanently stored when the supply fails by appropriately setting the threshold of write F.E.T. 28. The potential on column line 84 is set to 1 or 0 by a switch 86 (from 82, 80), and is fed to C43 when a read-write potential 50 is connected by a switch 72 to line 20 and F.E..T 28 gate. Read F.E.T. 36 is similarly turned or to connect a potential dependent upon whethe, the charge stored on C43 turns on F.E.T. 44, to read-out amplifier 92 through the switch 86. Switch 83 refreshes C43. When a circuit 60 senses that the power supply 58 falls below a predetermined value, it causes switch 72 to connect a negative "store" voltage 52 to F.E.T. 28 gate thereby to set its threshold to -10V if C43 holds F.E.T. 28 source at "0" level, or to -2V if C43 stores a "1". Upon restoration of the power supply, an intermediate negative voltage 54 is applied to F.E.T. 28 gate which makes F.E.T. 28 conduct only if a -2V threshold exists, thus writing a 1 back on C43. A positive erase voltage 56 subsequently ensures that F.E.T. 28 threshold is reset to -2V. A matrix of the three-F.E.T. storage cells (Fig. 3, not shown) uses common read-write-refresh and supply monitoring circuits.
Patent GB-1459825-A (GB)
Title: Device and method for detecting the degree of vacuum in container  for products such as food products
IPC: G01L9/00
Filed: 1974-11-04
Abstract: 1459825 Gauging vacuum PLASMON SpA 4 Nov 1974 [5 Nov 1973] 47579/74 Heading G1G The degree of vacuum in a container is checked by electromagnetically inducing vibrations of a wall of the container, receiving sound waves resulting from the vibration, analyzing them to determine whether or not the air-pressure in the container exceeds a given value, sensing the presence of the container at the checking point, and producing a container rejection signal if the given pressure is exceeded or if the sensed presence is not accompanied by a received sound wave signal. In the Fig. 2 embodiment the caps of jars on a conveyer are caused to resonate by electromagnet TD 1 energized with frequency-modulated pulses. The resulting sounds pass up conduit 11 to transducer H1 whose output is filtered to pass only those frequencies characteristic of jars having insufficient vacuum. The filtered signal is rectified and, if above a threshold amplitude, actuates a jar-reject mechanism after a delay equal to the travel time of a jar from the checking point to the reject point. The delay is provided by a shift register. The filtered and rectified output of a second transducer H2 responsive only to ambient noise is subtracted from the rectified signal from the transducer H1 so that ambient noise picked up by H1 does not cause spurious rejection of jars. The presence of a jar at the checking point is also sensed to ensure jar rejection if the cap lid is distorted and so cannot resonate. Cooling of electromagnet TD1 is aided by heat dissipators 12.
Patent GB-1482648-A (GB)
Title: Film cassette
IPC: G03B17/30
Filed: 1974-11-04
Abstract: 1482648 Tape cassettes PENTACON DRESDEN KAMERA-UND KINOWERKE VEB 4 Nov 1974 [5 Nov 1973] 47672/74 Heading B8M In a film cassette, a rigid cross-piece 3, interconnecting film roll storage and take-up chambers 1 and 2 and providing a contact pressure surface for film 4, comprises a transport slot 6 positioned between ribs 7. When the cassette is loaded into a camera, claw mechanism protrudes through slot 6 to engage successive perforations 5 in, and thus advance, the film the edges K of which can be guided direct in a film gate (of the camera).
Patent GB-1113050-A (GB)
Title: Device for holding flat workpieces,particularly piezoquartz plates during lapping
IPC: B24B37/10
Filed: 1965-11-11
Abstract: 1,113,050. Lapping. V. V. PAVLOV, N. A. ROZIN, J. V. TYUTCHEV, and A. V. JAKOBSON. 11 Nov., 1965, No. 47833/65. Heading B3D. A device A is mounted on a lapping plate 1 and restrained by rollers 3 on a bracket 2. The device comprises a ring 4 in which is disposed a weight 5, relative rotation being prevented by a pin 6 in the ring engaging a groove in the weight. The weight 5 acts through three members 7 on a replaceable holder 10, of glass or quartz, for the workpieces 11, e.g. piezo-quartz plates. The weight 5 has a rod 8 located in a bushing 12 secured to the cover 13 of the ring 4. At the ends of the bushings 12 are jaws 14, 15 forced together by axial movement of rings 16, 17 to adjust the gap between the rod 8 and the bushing 12. The ring 17 has holes e for its adjustment; the cover 13 has access slots f. Dust is excluded by a diaphragm 18 and bellows 19.
Patent GB-1085210-A (GB)
Title: Apparatus for mixing molten metal
IPC: F27D27/00
Filed: 1964-11-25
Abstract: 1,085,210. Agitating liquids. KOBE STEEL Ltd. Nov. 25, 1964 [Dec. 6, 1963; Dec. 30, 1963], No. 47947/64. Heading B1C. [Also in Division F4] A foundry ladle containing molten metal to be mixed, is supported on a moveable framework 4 carried by a plurality of spherical bearings 2 inserted between upper and lower races 5, 3 carried by the framework 4 and a stationary base 1 respectively. The triangular framework 4 and its attached ladle are swung about in an horizontal plane under the action of driving means comprising three sets of cranks, one at each apex, each of whose crank pins 7 are set with eccentricity e relative to their respective crank shafts 6 which are synchronously rotated from a common motor and shaft (13, 14, Fig. 2) through bevel gears 8. In a modification (Figs. 3 and 4) the spherical bearings (2) are carried on a plurality of dish shaped lower races (3) mounted on the stationary base (1), the weight of the ladle and the framework (4) being transmitted through a plurality of disc shaped upper races (5). Reference has been directed by the Comptroller to Specification 1,021,825.
Patent GB-1453496-A (GB)
Title: Serial intercommunication system with a centrla control
IPC: H04M9/00
Filed: 1974-11-07
Abstract: 1453496 Communication systems INTERNATIONAL STANDARD ELECTRIC CORP 7 Nov 1974 [12 Nov 1973] 48141/74 Heading H4K A looped communication system having access via a control unit to exchange lines is provided with a separate TDM signalling bus over which dialling signals, subset interrogation signals and subset control signals are transmitted. The control unit translates internal dialling signals into a format acceptable to the exchanges connected to the lines. Each station SP is allotted a time slot during a first part of which its address is transmitted by the control unit Z, S over bus SW. The condition of each button (i.e. internal calling button, exchange line request button and external key dialling buttons) is transferred via SW to the control during an intermediate portion of the allotted time slot. During a final part of the slot control signals such as crosspoint enable signals are sent via SW so as to connect the substation to an internal line or to an exchange line AL as appropriate
Patent GB-1086095-A (GB)
Title: Improvements in or relating to devices for correcting the picture geometry of cathode ray tubes
IPC: H01J29/70
Filed: 1964-11-27
Abstract: 1,086,095. Cathode-ray tubes. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 27, 1964 [Dec. 20, 1963], No. 48205/64. Heading H1D. A device for correcting the deflection geometry of a cathode-ray tube includes at least one magnet, and means for supporting the magnet in relation to the cathode-ray tube, which means includes means for guiding the magnet for translational movement having a component directed longitudinally in respect of the cathoderay tube and for rotational movement about an axis which substantially passes through the axis of the tube. As shown, in a support 1, magnet 2 is retained by springs 4 within housing 3 on a lever 5 provided with a longitudinal rib 6 and transverse ribs 7, 8, and with a stud 9 having a head 10 in the form of a plate. Support 1 is secured to the magnetic deflection assembly of a cathode-ray tube by stud 9 fitting in a slot in a protective cover over the scanning coils, head 10 lying beneath the slot with a leaf spring 11 clamping head 10 against the underside of the cover. Stud 9 enters the slot through a wider portion at one end filled with a resilient retaining member which may be depressed to allow stud 9 into the slot then springs back to retain it. In an alternative arrangement the slot may be replaced by a U-shaped wire loop.
Patent GB-1099400-A (GB)
Title: Improvements in or relating to racket frames
Inventor: CARLTON WILLIAM CHARLES
IPC: A63B49/12
Filed: 1965-11-20
Abstract: A racket frame comprises an elongated member 1 of titanium shaped to form a frame for the strings of the racket.  As shown the member is in the form of a loop and the cross-section of the elongated member is substantially less in the plane of the loop than in direction perpendicular to this plane, e.g. rectangular. The cross-section may be wider at its ends than at its centre in a direction perpendicular to the plane of the loop, i.e. bone-shaped or H-shaped.  Extension portions 2, 3 of each end of the loop are arranged to form the shaft. In an alternative embodiment only one end of the loop may be extended to form the shaft, the other end being joined thereto and in a further embodiment a separate shaft may be employed secured at its end to both ends of the loop.
Patent GB-1526220-A (GB)
Title: Crop handling apparatus
IPC: A01D90/08
Filed: 1975-12-03
Abstract: 1526220 Trailer hitches SPERRY RAND CORP 3 Dec 1975 [5 Dec 1974] 49566/75 Heading A1P [Also in Division B8]  A round bale collecting trailer has a draft member 20 latchable at 144 to a load support member 34 in the straight ahead road transport position to help support the trailer body which draft member can be swung by a ram 25 outwards to allow the drawing of the trailer to be offset to allow pick up operation. The member 20 is held in the respective positions by a pin entering holes 136, 138 respectively.
Patent GB-1199039-A (GB)
Title: Antacid Composition
IPC: A61K47/36
Filed: 1967-11-01
Abstract: 1,199,039. Antacid compositions. RICHARDSON-MERRELL Inc. 1 Nov., 1967 [21 Nov., 1966; 21 Dec., 1966], No. 49744/67. Heading A5B. A method for preparing a solid antacid composition comprises intimately mixing from 1-4 parts by weight of a non-toxic acidcounteracting compound; 1 part by weight of a hydrocolloid; and at least 4 parts by weight of water to form an intimate aqueous dispersion and evaporating the water to form a solid composition containing an intimate homogeneous mixture of the acid-counteracting compound and hydrocelloid. Tablets may be prepared by adding to the mixture from 2-10% each of a hydrocolloid and antacid, based on the quantity of hydrocolloid and antacid in the solid homogeneous mixture, together with tabletting, disintegrating and binding agents, and pressing the mixture. Suitable hydrocolloids are gums, polysaccharides from water plants, modified cellulose molecules, proteins, clays and colloidal silica and several specific hydrocolloids are mentioned. Antacids mentioned are magnesium oxide, hydroxide, carbonate or trisilicate, aluminium hydroxide, calcium carbonate and mixtures thereof.
Patent GB-1060300-A (GB)
Title: Process for the production of low molecular weight copolymers of butadiene and isoprene
IPC: C08F236/06
Filed: 1963-12-18
Abstract: Copolymers of butadiene and isoprene of molecular weight between 1000 and 20,000, and a viscosity of about 25 to 1000 centipoises at 50 DEG C. are made by copolymerizing the dienes in the presence of a catalyst comprising metallic lithium, or organolithium compounds, and which is present in an amount of 10 to 200 millimoles per mole of the dienes.  The molecular weight of the product is regulated by adding acetylene and/or an allene to the dienes.  The catalyst is used in the form of a solution or suspension in an inert diluent.  The copolymerization may be effected in bulk, but the presence of a hydrocarbon diluent is preferred.  Butyl and phenyl lithiums are the specified organo-metallic compounds.  The copolymers are recovered by conventional techniques.
Patent GB-1371430-A (GB)
Title: Process for preparing hydroxy citronellyl esters
IPC: C07C47/26
Filed: 1972-04-27
Abstract: 1371430 Hydroxycitronellyl enol esters SOC DES USINES CHIMIQUES RHONEPOULENC 27 April 1972 [28 April 1971] 50853/72 Divided out of 1371429 Heading C2C Esters (I) and (II) are made by reacting the esters (III) and (IV) with 58-78% w/v aqueous H 2 SO 4 , R being C 1 -C 6  alkyl.  The esters (III) and (IV) may be made by reacting citronellal with an aliphatic carboxylic anhydride in the presence of an alkali metal carboxylate.