baber/WOPTO huggingface dataset:
Patent GB-972946-A (GB)
Title: Improvements in or relating to the extraction of naphthalenic hydrocarbons
IPC: C07C7/10
Filed: 1963-03-26
Abstract: Naphthalene hydrocarbons are separated from mixtures also containing benzene hydrocarbons and aliphatic hydrocarbons by solvent extraction in which an extract of aromatic hydrocarbons in a polar solvent is obtained by contacting the mixture with a 5-membered heterocyclic compound selected from alkylene carbonates, gamma lactones and lactams and contacting the extract so formed with a paraffinic counter-solvent immiscible in the polar solvent and recovering naphthalenes from the polar solvent. In one embodiment the two contacting operations are carried out separately, the extract and raffinate from the first stage being separated and the extract being passed to the second stage; alternatively, the two are carried out in a single counter-current contacting step, introducing polar solvent at the top, paraffinic counter-solvent at the bottom and hydrocarbon feed intermediately. The polar solvent is preferably introduced dry and water introduced during the contact with counter-solvent, preferably in stages, up to a total of 15% by weight of the polar solvent.  The volume ratio of polar solvent to hydrocarbon feed may be 0.3-3.5 and the volume ratio of polar solvent to paraffinic counter-solvent may be 0.3-7.0.  Temperatures up to 125 DEG  C. may be used.  Naphthalenes are preferably recovered by adding water to the solvent, if necessary adding also an oil to prevent solidification of the naphthalene. Specified polar solvents are ethylene, propylene and chloropropylene carbonate, butyrolactone, valerolactone and crotonolactone, and butyrolactam (2-pyrrolidone) and its N-methyl derivative. The paraffinic counter-solvent may be propane, n-heptane, n-dodecane or a paraffinic mixture.
Patent GB-352562-A (GB)
Title: Improvements in and connected with fastenings for holding or locking sliding sashes
IPC: E05F11/00
Filed: 1930-04-16
Abstract: 352,562. Sliding window fastenings. STONE & CO., Ltd., J., Deptford, London. -(Powell, F.; c/o Jardine Engineering Corporation, Tientsin, China.) April 16, 1930, No. 12046. [Class 44.] An automatic catch for holding a sliding sash by engagement with a rack comprises a pawl with a rigid crank arm operated by a finger lever. In the construction shown in Figs. 5 and 6 the pawl e<1> which is urged into engagement with the rack by a spring u is disengaged by depression of the finger lever s towards the fixed thumb plate w. To limit the movement of the pawl it has inclined surfaces e<2>, e<3> which engage the rear wall l of the casing. In the construction shown in Fig. 7 the finger and thumb plates are arranged on the side of the casing and in that shown in Fig. 10 the pawl pivots about an axis which is at right-angles to the plane of the sash.
Patent GB-590690-A (GB)
Title: Improvements in or relating to mixing circuits for combining a plurality of signals
IPC: G01R27/32
Filed: 1944-06-26
Abstract: 590,690. Valve amplifying circuits. SPERRY GYROSCOPE CO., Inc. June 26, 1944, No. 12151. Convention date, July 16, 1943. [Class 40 (v)] In a. non-linear signal mixing circuit a number of valves have their anodes commoned and connected to H.T. positive, either directly or through a commor anode resistance, and their cathodes connected together and to earth through a common cathode resistance. The signals to be mixed. are applied individually to the control grids and the output is taken across either the common anode resistance or the common cathode resistance. A circuit suitable for combining four inputs is shown in Fig. 1, the inputs being fed between terminals A, B, C, D and earth, and its operation depends on the fact that the signal which has the greatest amplitude at any given instant will, owing to the presence of the cathode resistance, cause the valves appropriate to the other signals to be cut off. Consequently, four signals having, for example, the configurations shown as A<1>, B<1>, C<1> and D1, Fig. 4, are combined to produce the wave shape shown at E<1> or F<1> according to whether the output is taken from the cathode or anode resistor at E<1> or F<1> respectively. In modified arrangements, an individual resistance may be connected in the anode circuit of one or more valves or the grids of one or more valves may be connected to tappings on or across the common cathode resistor, in order to modify the effect of any given signal.
Patent GB-834302-A (GB)
Title: Polymers
IPC: C08F8/20
Filed: 1957-04-15
Abstract: High molecular weight copolymers of ethylene and one or more mono-olefins containing not more than 6 carbon atoms and which copolymer contains 40-75 mol. per cent of units of ethylene are chlorinated to an extent of 10 to 35 weight per cent of the copolymer.  The mono-olefin may be propylene, butene-1, pentene-1, hexene-1, or isopropylethylene.  Exemplified copolymers are ethylene and propylene, ethylene, butene-1, and hexene-1, and ethylene, propylene, and butene-1.  The copolymers are preferably made by polymerizing the monomers in the presence of an inert organic solvent or diluent and a co-ordination catalyst such as aluminium triisobutyl, or magnesium powder, and titanium tetrachloride.  The chlorination is generally effected in an inert solvent such as carbon tetrachloride and a reaction initiator such as alpha-alpha1-azodiisobutyronitrile and optionally light.  The chlorinated copolymers may be stabilized with epoxy compounds such as 2,21-bis-(4-glycidyloxyphenyl)-propane, and cured by compounding and heating with sulphur, a Group II metal oxide, or a rubber vulcanization accelerator such as tetraethyl thiuram disulphide, dipentamethylene thiuram tetrasulphide, 2-mercaptothiazoline, mercaptobenzothiazole, piperidinium pentamethylene dithiocarbamate, zinc diethyldithiocarbamate, or benzothiazyl disulphide.  The chlorinated copolymer may also be compounded with pigments and fillers such as carbon black.  The chlorinated copolymer may be used as a covering for wire, cables, and industrial rollers, or as a tank lining.  Specification 497,643 is referred to.
Patent GB-109091-A (GB)
Title: Improvements in or relating to Knitted Gloves and the Method of Producing the same.
Inventor: STIBBE GODFREY
IPC: A41D19/00
Filed: 1916-08-30
Abstract: 109,091. Stibbe, G. Aug. 30, 1916. Knitting gloves. - The finger fabrics are formed as seamless continuations of the hand fabric, and the courses of stitches are disposed vertically from the finger-tips to the wrist. A tube of fabric 1 is knitted upon a circular machine, and at intervals pouches 2 are formed on one side by reciprocating knitting. The tube is cut open along the line a-a, the blank 4 is then folded transversely about the line c-c, Fig. 3, the pouches 2 are cut as indicated in Fig. 4, and the edges 5 of the blank and the appropriate edges 9 - - 14 of the finger-sections are seamed. A thumb is afterwards inserted.
Patent GB-1321557-A (GB)
Title: Apparatus for the experimental demonstration of uniformly  accelerated motion
IPC: G09B23/06
Filed: 1971-04-29
Abstract: 1321557 Railway systems LEYBOLDHERAEUS-VERWALTUNG GmbH 29 April 1971 [8 May 1970] 12284/71 Heading B7L [Also in Division B8] Apparatus for experimentally demonstrating uniformly accelerated motion, for use as a teaching aid comprises an air cushion track 2 containing upwardly directed outlet orifices and a slipper element 1 adapted to straddle the track, the slipper element having an air dome 3 with an outlet orifice 4 which forms a reaction nozzle to move the element 1 along the track. Air is supplied under pressure to the track 2 and issues from the orifices therein to provide an air cushion beneath the slipper element 1. A battery-operated electrically driven airscrew 5 may be provided inside the dome 3 and the orifice 4 may be designed so that reaction nozzles of differing exit cross-sections can be attached thereto.
Patent GB-1154656-A (GB)
Title: Improvements in or relating to Dispensers for Slab-Like Articles.
Inventor: REY DANIEL
IPC: B65D83/08
Filed: 1967-03-16
Abstract: 1,154,656. Dispensing flat articles. D. REY. 16 March, 1967 [25 April, 1966], No. 12302/67. Heading B8P. In a dispensing container where a column of flat articles, e.g. chewing-gum bars, is pressed against the top wall by a spring 24, the uppermost article 35 is ejected through a slit 25 by a resilient arm 31 when a knob 33 is released; forcible displacement of the arm 31 to the dotted line position allows the next bar to rise. Ribs such as 26-28 guide the column.
Patent GB-455588-A (GB)
Title: Photographic shutter
IPC: G03B9/22
Filed: 1936-05-01
Abstract: 455,588. Photographic shutters. VOIGTLANDER & SOHN AKT.-GES., 7, Campestrasse, Brunswick, Germany. May 1, 1936, No. 12427. Convention date, May 14, 1935. [Class 98 (i)] The operative parts of a pivoted blade, symmetrical-opening shutter mechanism are supported between two plates 2, 3 which are rigidly fixed at the ends of a tubular member 1. The shafts 11 of the gearwheels of the retarding mechanism 8, 9 are mounted in bushings 13 which screw into bores 16 in the flanging plates 2, 3. Radial slots extend from the bores 16 to the edge of the plates 2, 3 and allow insertion of the shafts 11. One of the plates may be cut away at parts where there are no shafts to support.
Patent GB-514070-A (GB)
Title: Improvements relating to the production of powders from natural silk
IPC: A61K8/64
Filed: 1938-04-26
Abstract: 514,070. Grinding and crushing. LAWSON, R. W., and VERDIERS, E. E. April 26, 1938, No. 12491. [Class 59] [Also in Groups XXXVI, III, IV and VI] Natural silk is subjected to the action of aqueous acids or alkalies or other agents having a decomposing action but before the silk is completely decomposed or broken-up, the action is interrupted by treatment of the mass with a neutralizing agent whereby the mass is obtained as a slime of solid colloidal particles. The slime is subjected to an electrolytic treatment between an anode consisting of an alloy of copper, gold and silver, and an aluminium cathode and preferably at the same time it is subjected to the action of radio-active salts, or X-rays. The silk particles thus absorb metal particles. The slime is then dried and ground to an impalpable powder.
Patent GB-367633-A (GB)
Title: Improvements in the manufacture of splinterless glass
Filed: 1931-04-28
Abstract: 367,633. Compound glass. 1. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. April 28, 1931, No. 12526. Convention date, April 28, 1930. Addition to 349,283. [Class 140.] Splinterless glass is made by interposing between sheets of glass layers of a polyvinyl alcohol or a derivative thereof capable of dissolving or swelling in water. Softening agents such as poly-ethylene oxide may be added. The polyvinyl alcohols are preferably highly viscous and elastic. The polyvinyl alcohol derivatives may be obtained by partially saponifying polyvinyl esters, by partially esterifying polyvinyl alcohols, by saponifying halogen fatty acid esters of polyvinyl alcohols, and by reacting polyvinyl alcohols with ethylene oxide as described in Specification 364,323, [Group V], or with aldehydes as described in Specification 356,408, [Group V]. Films of the polyvinyl alcohol or derivatives thereof may be prepared from aqueous or alcoholic solutions and placed between sheets of glass or attached thereto by adhesive layers prepared, for example, from gelatine or solutions of polyvinyl compounds in organic solvents or the films may be formed directly on the glass sheets. The assembly is then hot pressed.
Patent GB-1304654-A (GB)
IPC: C08F14/06
Filed: 1971-04-30
Abstract: 1304654 Polymerizing vinyl chloride SHINETSU CHEMICAL CO 30 April 1971 [4 May 1970] 12556/71 Heading C3P In the suspension polymerization of vinyl chloride in a vessel provided with a condenser, the monomer, water and suspending or dispersing agent are first stirred and only after bubbling has ceased the initiator is added. Preferably the condenser is operated only after polymerization has commenced and an alkaline substance, organic amine, oxidizing agent or nigrosine dye is added to the polymerization medium.
Patent GB-970768-A (GB)
Title: Pneumatic hand or foot pump
IPC: F16J9/28
Filed: 1963-03-29
Abstract: 970,768. Piston packing. W. BLOME, and W. BLOME Jun., [trading as KARL SCHEFFER-KLUTE INHABER WILHELM BLOME KOMM.-GES.]. March 29, 1963 [April 13, 1962], No. 12571/63. Heading F2T. [Also in Division F1] In a pneumatic hand or foot pump the piston is sealed during the forward stroke by a rubber &c. sealing disc 3 mounted for limited axial movement in a circumferential groove in the piston formed by flanges 2 and 2c, the disc 3 having an inner diameter larger than the diameter of the bottom of the groove and projections 3a on its side remote from the piston-rod 1 which projections engage the flange 2c during the backward stroke and thereby provide clearance for free passage of air past the piston. Sealing ribs 3b may be formed on the face of the disc opposite flange 2. The piston-rod 1 is inserted in a bore in a bush part 2a of the piston which may be cast thereon or secured by a cross-pin. In a modification the piston-rod is hollow and surrounds the bush 2a.
Patent GB-370676-A (GB)
Title: Improvements in stereoscopic and similar cameras
IPC: G03B35/10
Filed: 1931-04-29
Abstract: 370,676. Photographic cameras. THORNTON PICKARD MANUFACTURING CO., Ltd., PICKARD, A. G., and SLINGER, F., Altrincham, Cheshire. April 29, 1931, No. 12602. [Class 98 (i).] A stereoscopic or twin-lens camera is furnished with a single shutter disc B pivotally mounted between the lenses upon a stationary plate C furnished with lens apertures a, a<1>, and a pair of stops c, c<1>, the disc being furnished with diametral exposure slots or apertures b, b<1> and a peripheral projection b<3>. The shutter is actuated by a lever D through a wire spring d. A time lever E is adapted to be moved into the path of the projection b<3> for time exposures.
Patent GB-1131956-A (GB)
Title: Phosphor and method of preparation thereof
IPC: C09K11/08
Filed: 1966-03-22
Abstract: 1,131,956. Luminescent materials and processing. RADIO CORPORATION OF AMERICA. 22 March, 1966 [24 March, 1965], No. 12635/66. Heading C4S. A cathode- or photo-luminescent phosphor consists of the singly-activated material M<SP>1</SP>( 2-x )M<SP>11</SP> x O 2 Ch where M<SP>1</SP> is Y and/or Gd, M<SP>11</SP> is one of Dy, Er, Eu, Mo, Nd, Pr, Sm, Tb or Tm, Ch is S, Se or Te and x is between 0À0002 and 0À2. Preferred materials are yttrium or gadolinium oxy-sulphides activated by europium or samarium, which are red-emitting with x above 0À05; terbium gives blue and green emitters, with x below and above 0À02 respectively; thulium gives a deep blue emission with x 0À06. The oxy-sulphides may be made by heating (a) the mixed oxalates in H 2 S; (b) the mixed sulphates in H 2 , H 2 S or CS 2 ; (c) the mixed oxides in CS 2 ; (d) a mixture of S and the mixed oxides, oxalates or sulphates in N 2  or H 2 ; all at 900- 1300‹ C. for 0À2-2À0 hours. Specific examples are given of the preparation and emission wavelengths of all the preferred materials.
Patent GB-1299793-A (GB)
Title: Improvements in or relating to apparatus for use in an indoor golf game
Inventor: BALDWIN BRADFORD JAMES
IPC: A63B69/36
Filed: 1970-03-17
Abstract: 1299793 Automatic lie selection for a golf game BRUNSWICK CORP 17 March 1970 [29 April 1969] 12777/70 Heading A6D A tee area includes a register means for registering a code denoting the location on a golf hole from which a ball is to be played and output means which both memorises the lie associated with the code corresponding to any given location on the golf hole and is responsive to the said registered code to give an output signal denoting the lie condition at the said location. A code (say F5) associated with a particular zone of the golf hole, Fig. 5, from which a shot is to be played is fed to the register means by switches 174, 176 which operate both a projector 16 to show an appropriate view of the hole as is disclosed in Specification 1,199,327 and the output means which rotate a tee-structure 20, constructed as disclosed in Specifications 1,181,401 and 1,234,528, to present to a golfer one of three mats disposed thereon representing different lie conditions. Each zone lies entirely within one lie condition and the code figures 1-4, 5-9 and 10 represent respectively the fairway, the rough and sand. Contacts 178 of the switch 176 control a NOR gate 198 and switches 200 and 202 of a logic circuit 170 for controlling the tee 20. A switch 218 of said circuit forms part of the projector circuit described in Specification 1,199,327 and is open when the film transport mechanism of the projector is in operation. A set of push buttons 222 are provided for four players. Alternatively, the means may utilize an opaque portion 242, Fig. 7, on the film strip; windows 246, 248 being provided to allow light to reach photocells in accordance with a code indicating the lie. The photocells form part of a logic circuit, Fig. 8 (not shown) controlling the tee 20. The game may utilize a ball spot projector as disclosed in Specification 1,203,264 and the mats may be constructed in accordance with Specifications 1,181,403 and 1,181,404.
Patent GB-718313-A (GB)
Title: Enclosure for treating strips, wires and similar products, and especially a continuous treatment furnace
IPC: C21D9/56
Filed: 1952-05-21
Abstract: 718,313. Furnaces. HEURTEY & CIE. May 21, 1952 [May 24, 1951], No. 12808/52. Class 51 (2). (Also in Group XVI] A furnace for treating metal strips, wires, &c. is characterized by the fact that the work is initially set over a straight path between rolls the axes of which have fixed positions and displaceable rolls the axes of which have been shifted by a device adapted to move said displaceable rolls individually or simultaneously from their working positions towards and slightly beyond the fixed axis rolls to positions in which they alternate with said fixed rolls the displaceable rolls after the introduction of the work being shifted back to their working positions so that the work during treatment is carried over a sinuous path. Shown (Figs. 2 and 3) is a refractory lined furnace comprising work 6, inlet and outlet 4, 5, and movable and fixed rolls 2, 3, the rolls 2 being in the position shown in Fig. 2 for setting the work and in the position shown in Fig. 3 for the operation of the furnace and hence the heat treatment of the work. Vertical movement of rolls 2 is effected by supporting end hollow trunnions 12 in collars 8, which are made to slide vertically in guideways 7, arranged in the furnace end walls by cables 13 attached to the drums of a hoist (not shown). Rotation of each roll 2 is effected by a pair of retractable spindles 14 which are displaced from engagement with the trunnions 12 for the vertical shifting movements. A device is provided for cooling each spindle end. In the embodiment shown in Fig. 8 the rolls are arranged in fixed and movable sets each set comprising a row of linked twin rol'ers 15, 15a, 16, 16a, the top set being initially lowered such that the threading paths of oppositely moving work strips 17, 18 are straight. Fig. 9 shows a furnace comprising furnace, heat-exchanging and cooling chambers 19, 20, 21 the chamber 20 being provided with a train of twin rolls. With the movable rolls in their lowered positions wire is fed in a straight path between the appropriate rolls through the chambers 20, 19 from an inlet opening 26 to a roll 3a about which it is turned and then fed straight back between further appropriate rolls through chambers 19, 20 and 21 to an outlet opening 25. The movable rolls are then raised and the sinuous work travel path shown in the figure ensues.
Patent GB-1284024-A (GB)
Title: Improvements in magazine spindles for automatic record changers
Inventor: GOULDING KENNETH CHARLES
IPC: G11B17/16
Filed: 1970-03-17
Abstract: 1284024 Turntable spindle MAGNAVOX ELECTRONICS CO Ltd 19 April 1971 [17 March 1970] 12852/70 Heading G5R In a symmetrical turntable spindle including 3 primary support pawls 17 retractable downwardly into the casing to release lowermost record 23 as push rods 10, 13 are moved downwardly and 3 secondary support pawls which during said downward movement of the push rods move downwards and outwards to engage beneath the next lowermost record 24, a record sensing member 18 is provided which prevents downward movement of the push rods when the absence of a record is detected. This latter action leads to stoppage of the automatic change mechanism. The sensing member 18 is positioned between two primary support pawls and moves with the pawls during the record change cycle. On being moved downwardly, the cam nose 27 on the sensing member moves opposite slot 31 in the casing allowing spring 20 to force the upper end 28 of the member outwardly through slot 22 into sensing engagement with a record. In the absence of a record, the upper end moves outwardly allowing abutment surface 32 to engage the lower lip of slot 22 thereby preventing downward movement of the push rod assembly 10, 13. The gap between rod 13 and a rod 15 coupled to the auto-change mechanism is detected by member 33 to stop further operation of the mechanism.
Patent GB-586970-A (GB)
Title: Improvements in optical indicating apparatus
IPC: G01L7/10
Filed: 1944-07-05
Abstract: 586,970. Indicating - apparatus. BENDIX AVIATION CORPORATION. July 5, 1944, No. 12859. Convention date, July 12, 1943. [Class 106 (iv)] - An indicating device comprises a receiving plane or dial 10 on to which a beam of light is reflected as a light spot, and a reflector 16 so shaped that relative movement of the beam over the reflector causes the reflected beam to trace a predetermined path on the dial, the total length of which is large compared with the linear dimensions of the dial. The reflector 16 is so formed that parallel rays of light, when reflected on to the receiving plane, follow a circular, spiral, oval or other scale of graduations such as that shown in Fig. 8. In one embodiment, Fig. 2, variations of pressure in a capsule 30 displace the reflector vertically so that a beam of light from a source 23, when reflected, appears as a spot traversing a scale on the dial 10. In another embodiment, the shaped reflector is fixed and an intermediate plane mirror is moved by pressure-responsive. means.
Patent GB-157677-A (GB)
Title: Improvements relating to chains particularly those used for traces of draught animals
IPC: F16G13/14
Filed: 1920-05-10
Abstract: 157,677. Belz, E. P. May 10, 1920. Driving and like chains without separate joint pins; wire-link chains.-In a chain, particularly for traces of draught animals, each link is formed of a looped metallic member with converging shanks 6, 7. The loop at the open end has elongated eyes 10, 11, the closed end 5 being shaped to lie out of the plane of the main portion and in alignment with the eyes. The eyes are of such a length as will admit one of the eye portions of a contiguous link.