baber/WOPTO huggingface dataset:
Patent GB-639559-A (GB)
Title: The manufacture of derivatives of oxazolidine-2:4-diones and intermediates thereof
Inventor: DAVIES JOHN STANLEY HERBERT
IPC: C07D263/44
Filed: 1947-04-03
Abstract: S-Alkyl, S-cycloalkyl and S-aralkyl derivatives of 4-keto-2-mercapto-oxazolines of the general formula <FORM:0639559/IV (b)/1> where R1 and R2 are hydrogen atoms or alkyl, aryl, aralkyl or cycloalkyl radicals or may together form a cycloalkyl ring and R3 is a cycloalkyl, alkyl or aralkyl radical and the isomeric N-alkyl, N-cycloalkyl and N-aralkyl derivatives of the corresponding 4-keto-2-thionoxazolidines are prepared by reacting a 4-keto-2-mercapto-oxazoline or the tautomeric 4-keto-2-thion-oxazolidine in the presence of an acid binding agent or a salt thereof, e.g. the ammonium potassium sodium or silver salt, with an alkylating, aralkylating or cycloalkylating agent, such as dimethyl sulphate, methyl iodide, dimethyl sulphite, benzyl bromide or a cycloalkyl halide.  Oxazolidine-2 : 4-diones are prepared by reacting the N-substituted 4-keto-2-thion-oxazolidines which may be obtained by the above process with agents known to be capable of converting thioketones into ketones, e.g. warm mineral acids, water at 100-120 DEG  C. under pressure, silver nitrate, aqueous lead acetate or bromine water. The product of the alkylation, cycloalkylation or aralkylation step may contain a mixture of S- and N-derivatives which may be separated by fractional crystallization or fractional distillation.  The N-derivatives may be separated by hydrolysis, e.g. with mineral acid which decomposes the S-derivatives into the mercaptan and the oxazolidine-2 : 4-dione leaving the N-derivative unchanged.  N-Derivatives of oxazolidine-2 : 4-diones may be prepared directly from 4-keto-2-thion-oxazolidines by prolonged heating in a moist solvent in the presence of potassium carbonate and an alkylating agent which causes alkylation and hydrolysis of the S-derivative.  In examples: (1) 4-keto-2-thion-5 : 5-dimethyloxazolidine-2 : 4-dione in alcoholic sodium ethoxide is treated with dimethyl sulphate to give 4-keto-2-thion-3 : 5 : 5-trimethyloxazolidine and 4 - keto - 2 - methylthio - 5 : 5 - dimethyloxazoline which is decomposed by dilute hydrochloric acid to 5 : 5-dimethyloxazolidine-2 : 4-dione while the 4-keto-2-thion-3 : 5 : 5-trimethyloxazolidine is treated with bromine water to give 3 : 5 : 5-trimethyloxazolidine-2 : 4-dione; (2) the procedure of (1) is carried out using diethyl sulphate in place of dimethyl sulphate and giving corresponding products; other examples (3)-(10) describe the preparation of 4-keto-2-thion-3 : 5-dimethyl-5-ethyloxazolidine, 3 : 5-dimethyl-5-ethyloxazolidine-2 : 4-dione, 4-keto-2-thion-5-methyl-3 : 5-diethyloxazolidine, 5-methyl-3 : 5-diethyloxazolidine-2 : 4-dione, 4-keto-2-thion-3 : 5-dimethyloxazolidine, 3 : 5-dimethyloxazolidine - 2 : 4 - dione; (4) 3 - benzyl - 5 : 5 - dimethyloxazolidine-2 : 4 - dione, 3 - ethyl - 5 : 5 - dimethyloxazolidine-2 : 4-dione and 5 : 5-dimethyloxazolidine-2 : 4-dione.  Specifications 561,183 and 626,971 are referred to.
Patent GB-1511631-A (GB)
Title: Implantable hip-joint prosthesis
IPC: A61F2/36
Filed: 1977-03-04
Abstract: 1511631 Hip-joint prostheses F BAUMANN and M B ULRICH 4 March 1977 [20 March 1976] 09208/77 Heading A5R An inplantable femoral head prosthesis for a hip joint comprises a ball head 1, a neck 2 and a shaft 3, the shaft being curved in one plane, a supporting shoulder 4 being provided at the junction of the shaft and neck, facing the shaft, and the shaft being provided with a first bearing surface 8 adjacent the shoulder, a second bearing surface 9 at its free end, and a third bearing surface 10 approximately midway between the first 8 and second 9 surfaces, surfaces 9 and 10 being flat, and approximately parallel to each other. Surface 8 is also preferably flat. The shaft and neck may be bored to receive a fastening screw 27 which passes through a retaining plate. An acetabulum socket for use with the femoral head prosthesis has holes therethrough for receiving fastening screws and may be provided with a peripheral ring, figures 8 and 9 (not shown), also with bores for additional securement of the socket to the pelvis.
Patent GB-510589-A (GB)
Title: Improvements in or relating to man's undergarment
IPC: A41B9/02
Filed: 1939-03-24
Abstract: 510,589. Pants &c. CLARK, G. M. (Reis & Co., R.). March 24, 1939, No. 9265. [Class 141] In a pair of men's pants the front portion has an inverted V-shaped notch extending upwards from its lower margin the edges of which are stitched together 'to form a "dart" whereby when the back portion of the garment is stitched to the front at the sides and lower margin a pouch for the wearer's private parts is formed. In the form shown, two sections 13, 14 cut out as shown in Fig. 6 are overlapped so that the V-shaped notches 20, 21 coincide and when stitched together form a "dart" 24. When the two sections 20, 21 are stitched to a back portion along the lines 11, 12 and 27, a pouch is formed in the front of the garment. The edges of the sections 13, 14 are sewn together along the line 23 omitting the arcuate recess 19 and along the line 22 so as to form a two ply fly front. Tape bindings 25, 26 covering the edges of the two front sections run from an elastic waistband 15 to bindings 18 edging leg openings 16, 17. Full-legged or half-legged undergarments as well as shorts may be formed in this manner.
Patent GB-1206405-A (GB)
Title: Improvements in or relating to straight bar knitting machines
Inventor: START ERNEST
IPC: D04B11/00
Filed: 1967-02-28
Abstract: 1,206,405. Knitting. WILLIAM COTTON Ltd. 16 Feb., 1968 [28 Feb., 1967], No. 9322/ 67. Headings D1C and D1K. A cable stitch pattern is produced on a group of five consecutive needles 1a . . 1e of a straight bar machine by the use of a single loop transfering mechanism comprising two transfer points P1, P2 one of which is rendered ineffective during a five stage transfer operation so that only one point effects a loop transfer at one stage whilst both points effect a transfer at another stage. For example, as shown in Fig. 4, initially the points are positioned so that point P1 is opposite an empty needle. The point P2 transfers loop from needle 1a to needle 1b both points actually moving simultaneously. Subsequently the points are reset and aligned with needles 1d 1e but a peaking spade buffs point P2 and in the next transfer movement the point P2 fails to transfer the loop in needle 1e but point P1 transfers loop from needle Id to needle 1a. The points are then reset to cover needles 1b, 1c and the corresponding loops transferred by both points, as shown. The successive stages are completed with the loop transfer forming a cable stitch having crossed over loops shown at stage E in Fig. 4. Alternatively instead of using a peaking spade to render the point ineffective the points may be operated by electromagnets into and out of operative positions. The shogging of the points is controlled by a lead screw from pawl and ratchet mechanism which under the influence of electromagnets causes the points to move in either direction and for one, two or three needle spaces.
Patent GB-101466-A (GB)
Title: An Improved Magnetic Compass.
Inventor: STEWARD JOHN JAMES
IPC: G01C17/00
Filed: 1916-07-03
Abstract: 101,466. Steward, J. J. July 3, 1916. Magnetic compasses.-A lever b, by which the needle or card e of a magnetic compass may be lifted from its pivot a<2>, is carried by a flexible piece of metal c, which closes an aperture in the side of the case a. Spirit-compass cases are thus rendered liquid-tight at the lever aperture. The piece of metal c is preferably provided with concentric corrugations, and the outer end of the lever b may be actuated by a screw f<1> and spring f<2> carried by a frame f secured to the case.
Patent GB-879308-A (GB)
Title: Improvements in and relating to the production of acrylic acid esters
IPC: B01J31/22
Filed: 1960-03-17
Abstract: Acrylic acid esters are produced from C2H2, CO and an alcohol in presence of a complex of a nickel halide and a dialkylglyoxime of formula <FORM:0879308/IV (b)/1> wherein R and R1=C1-8 alkyl; a nickel salt of the said glyoxime may be alternatively used.  Alcohols used in examples are ethanol and 2-ethylhexanol, those otherwise specified being isopropanol, t-butanol, pentanol, dodecanol and the mono methyl, ethyl and butyl ethers of ethylene glycol.ALSO:Acrylic acid esters are produced from C2H2, CO and an alcohol in presence of a complex of a nickel halide and a dialkylglyoxime of formula <FORM:0879308/III/1> wherein R and R1=C1-8 alkyl; a nickel salt of the said glyoxime may be alternatively used.  Alcohols used in examples are ethanol and 2-ethylhexanol, those otherwise specified being isopropanol, t-butanol, pentanol, dodecanol and the mono methyl, ethyl and butyl ethers of ethylene glycol.
Patent GB-1498366-A (GB)
Title: Friction disc and ring assembly
IPC: F16D65/12
Filed: 1976-03-09
Abstract: 1498366 Brake discs; full-face disc assemblies; friction clutches BENDIX CORP 9 March 1976 [27 March 1975] 9381/76 Headings F2C and F2E A friction disc and ring assembly for a brake or a clutch comprises a carbon or carbon based friction disc 22 having frictionally swept and miswept annular portions, the disc 22 having an plurality of circumferentially spaced slots 42 provided in one of the two radially spaced apart peripheral edge portions thereof, an annular metal (steel) ring 26 arranged contiguous to the one peripheral edge portion and having a plurality of lugs 40, each lug 40 extending radially from the ring 26 into engagement with a corresponding slot 42, and first and second axially spaced annular metal (steel) plate members 44, (46) fixedly secured to the rings 26 and extending therefrom to overlay the unswept portion to protect it from oxidation. Figs. 1 and 2 illustrate a rotor disc 22 of a disc brake, the disc 22 being encircled by the ring 26; the ring 26 has a plurality of spaced radially outwardly extending sections 28 provided with slots 30 for engagement with drive keys 32 of a vehicle wheel. Backing ribs 36 are provided between end walls 34, 38 of the slots 30. The lugs 40 extend radially inwardly for engagement with slots 42 and the members 44, (46) are secured to the ring 26 by rivets (48). Figs. 3, 4 illustrate a stator disc 24 whereof the associated ring 56 has radially outwardly extending lugs 64 for engagement with slots 66 in stator disc 24, and radially outwardly extending keys 58 for engagement with splines 60 in a fixed torque tube 62. The plate members and the rings of the disc assemblies may be formed of arcuate segments. Fig. 5 illustrates a disc brake wherein the plate members 44, 46 are modified to provide protection from oxidation and from debris of the radially outermost edge portion of the stator disc 24. To this end the members 44, 46 are formed with axially extending cylindrical walls 76 telescoping one with another and projecting over adjacent stator discs 24 interposed between rotor discs 22. The plate members 68, 70 of stator discs 24 may also have telescoping walls to shield the radially inner edge portion of rotor discs 22 interposed between them.
Patent GB-642541-A (GB)
Title: Improvements in or relating to telecommunication exchanges and to operators' switchboards therefor
Inventor: WRIGHT ESMOND PHILIP GOODWIN
IPC: H04M15/08
Filed: 1946-03-09
Abstract: 642,541. Exchange systems. STANDARD TELEPHONES & CABLES, Ltd. March 9, 1946, No. 9407/47. Divided out of 642,527. Drawings to Specification. [Class 40 (iv)] The subject-matter of this Specification is identical with that described in Specification 642,527 but the claims differ. Specifications 440,348, 577,088, 642,524 and 642,542 are referred to.
Patent GB-235842-A (GB)
Title: Improvements in vehicle window regulator installations
IPC: E05F11/38
Filed: 1925-04-09
Abstract: 235,842. Ternstedt Manufacturing Co., (Assignees of Archer, T. P., and Heintz, E. E.). June 18, 1924, [Convention date]. Vehicle - window opening and closing apparatus.-The convex roller or stud b of a vehicle-window operating apparatus engages an open guide, preferably formed integral with the bottom sash and having a V-groove c for the roller. The window is freed from the roller by tilting, as shown in Fig. 5, when the front moulding or guidepiece is removed.
Patent GB-558587-A (GB)
Title: Improvements in or relating to tool holders for machine tools and the like
IPC: B23G5/00
Filed: 1942-07-08
Abstract: 558,587. Hydraulic clutches ; holders for machine-tools. STANLEY, F. R. July 8, 1942, No. 9462. [Class 69 (ii)] [Also in Group XXII] In a lathe, drilling-machine, or other machine tool, hydraulic means is provided for varying the speed of rotation of the tool relatively to that at which the work or the tool holder is driven. As applied to a capstan lathe in which a tap is mounted in a chuck 7 on the spindle 2 mounted in the body portion 1 of the tool holder, which is clamped in a lathe capstan, the spindle 2 is fitted with a pump rotor 3 fitted with sprine-controlled sliding vanes 4 which rotate in a cylinder 5, bored eccentrically in a piston 6 which can slide in the body 1 without rotation. In the position shown in Fig. 2, the rotor 3 can rotate freely and causes liquid to be drawn from a reservoir 9 through a non-return valve 12 and discharged through outlet passages 13, 14 to the reservoir. When, however, the lateral movement of the tool is stopped by engagement with the work, the piston 6 is moved to the right and the flow of liquid constricted, so that the rotation of the tool by the rotating work is caused to lag behind the work, and an adjustable rate of rotation of the tool relatively to the work is obtained by adjustment of a throttle valve 16. When the capstan is stopped the tool is moved forward relatively to the body 1 and the piston 6 is moved to the left thus permitting free rotation of the spindle 2 and the cessation of the cutting operation. On reversal of the work the pump acts as a brake and the motion of the work causes quick withdrawal of the tool. In a modification, Fig. 5, a gear type of pump is used and the tool spindle 25 is splined to one of the gears which can receive fluid from a casing 23 via a non-return valve, and when the tap is advanced by the capstan the gears are rotated and an adjustable stop obtained by means of a throttle valve 24. When the motion of the capstan is halted the spindle 25 continues its movement until a groove 29 in its spindle permits the liquid to byepass the valve 24, so that the work and the tap will rotate at the same speed and the cutting action cease. The invention may be applied to driven tools such as a drill secured in a rotating chuck, and in this case the speed of the drill can be reduced relatively to the chuck.
Patent GB-1254511-A (GB)
Title: Improvements in and relating to ferromagnetic materials
Inventor: MIHARA TOSHIHIRO
IPC: G11B5/706
Filed: 1969-02-21
Abstract: 1,254,511. Modified chromium dioxide. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 21 Feb., 1969 [23 Feb., 1968; 28 Feb., 1968], No. 9501/69. Heading H1H. [Also in Division C1] Ferromagnetic chromium dioxide includes in the crystal structure as an integral part thereof 0À01-10 atomic per cent of the calcium, 0À01- 20 atomic per cent of tellurium and 99À98-70 atomic per cent of chromium based on the total of the three kinds of metal atoms. The material may be made by mixing chromium trioxide, a tellurium compound and a calcium compound in an atomic percentage of 70-99À98% chromium, 0À01-20% tellurium and 0À01-10% calcium, and heating the mixture in presence of a solution or compound containing ammonium ions, at 280-180‹ C. and 50-1000 atmospheres. When the chromium dioxide contains 0À01-2 and 0À01-3 atomic per cents of calcium and tellurium respectively, the particles are rutile, acicular, 0À1-2À0 Á in length, 0À01-0À4 Á in width, the ratio of length to width being 4 : 1 to 30 : 1. In examples, the ferromagnetic material is made by heating chromium trioxide with calcium monoxide and telluric acid, either without ammonium ions or in presence of ammonium chromate or aqueous ammonia. In one example an oxygen atmosphere is used. The products have coercive force (H c ) = 320-510 oersteds, residual magnetization (B r ) = 1450-2200 gauss and maximum magnetization (4# I m ) 3260- 4200 gauss.
Patent GB-582746-A (GB)
Title: Improvements in moisture-resisting packages
IPC: B65D77/36
Filed: 1944-05-18
Abstract: 582,746. Cigarette &c. packages. SHARMAN, C. F. and COULSON, D. A. May 18, 1944, No. 9532. [Classes 18, 66 and 94 (i)] A moisture - re - sisting package of the kind in which goods, e.g., cigarettes, are contained in a box consisting of two parts connected by a sealing band around the four sides and which is opened by severing the band along three sides to have a hinge connection on the fourth side, is made from paper, cardboard or like sheet material and comprises a tray 5 and a lid 6 each made from a blank having a central panel and four side extensions, the tray having a rebated portion 9 to fit within the lid formed by a skelet 13 fitting within the tray or by setting inwards the upper border of the wall. A band 3 of substantially the same depth as the box is adhesively secured around the four walls so as to hold these together and seal the joint between the lid and tray, the container being such that it may conveniently be opened by severing the band along three sides leaving the fourth side as a hinge 7. The material may be moisture-resisting or the package may be given a moisture-resisting coat, e.g., of synthetic resin. The severing may be effected by a tearing string the end of which may be initially covered by the band. The top and bottom may be domed, and the material may be laminated, one layer consisting of metal foil.
Patent GB-712814-A (GB)
Title: Improvements in crystallizers
Inventor: MILNER GEOFFREY
IPC: B01D9/00
Filed: 1950-04-19
Abstract: <PICT:0712814/III/1> A classifying crystallizer comprises a crystallization vessel 10 of substantially constant cross-section over the major portion of its height, an inlet in, or terminating adjacent the bottom of the vessel and a closed baffle 12 adjacent and symmetrically disposed with respect to the inlet, the baffle being either substantially pear-shaped, or, as shown, substantially biconical.  In a modification the baffle has a cylindrical portion of diameter equal to the maximum diameter of the baffle. When a downcomer is used, as shown, the baffle is formed concentrically with the inlet pipe 11.  The vertical velocity of the liquid at the point of maximum baffle diameter is at least equal to the settling velocity of the largest crystals which are removed by a siphon or pump.  The only crystals below this point are small crystals being recirculated or which have been added with the feed liquid.  The baffle diameter at any given point above the point of maximum diameter is arranged to provide a liquid velocity suitable for crystals of a predetermined size, and is determined in accordance with known data for the settling rates of crystals of various sizes together with the known density of suspension required for the proper dissipation of supersaturation.  The effect of the baffle having a cylindrical portion is to spread out the zinc containing the largest crystals, such baffles, e.g. of three to ten feet in length, being used with liquors such as ferrous sulphate liquors which desupersaturate slowly.  For ammonium nitrate liquors the baffle would have no cylindrical portion.  By suitably designing the upper part of the baffle the separation between crystals of two given sizes may have any desired value, increasing as the angle of taper of the baffle decreases.
Patent GB-581367-A (GB)
Title: Improvements in liquid fuel burners
IPC: F23D11/26
Filed: 1943-06-15
Abstract: 581,367. Liquid-fuel burners. ANGLOSAXON PETROLEUM CO., Ltd., JOYCE, J. R., and POWER JETS, Ltd. June 15, 1943, No. 9603. [Class 75 (i)]. A vortex chamber unit secured in the burner body 1 by an apertured screw plug 8 comprises a hollow cylinder 2, an orifice plate 3, a vortex chamber 4, and a piston 5 pressed towards the vortex chamber by a spring 6 engaging a retaining plug 7. Liquid fuel supplied to the burner body passes through radial openings 2B in the cylinder 2 and moves the piston 5 rearwardly according to its pressure, to uncover one or more rings of tangential swirl ports 4A in the chamber 4. The rearward movement of the piston is limited by a spigot 7A in the plug 7. Leakage past the piston is returned to the vortex chamber through an axial passage 5A in the piston. Specification 577,039 is referred to.
Patent GB-1527828-A (GB)
Title: Tetrafluoroethylene terpolymers
IPC: C08F16/00
Filed: 1977-03-08
Abstract: 1527828 Tetrafluoroethylene terpolymers E I DU PONT DE NEMOURS & CO 8 March 1977 [10 March 1976] 09812/77 Heading C3P Novel terpolymers contain in polymerized form: (a) tetrafluoroethylene; (b) between 4 and 12 wt.% hexafluoropropylene and (c) between 0À5 and 3 wt.% of either perfluoro(ethylvinylether) or perfluoro(n-propylvinylether). They may be prepared by aqueous or non-aqueous phase polymerization in the presence of a chlorofluoroalkane or chlorofluorohydroalkane solvent, a chain transfer agent and an initiator. They are mouldable, unlike PTFE itself.
Patent GB-1415388-A (GB)
Title: Bearing devices
IPC: F16C27/04
Filed: 1973-02-28
Abstract: 1415388 Bearings A TINDAL 28 Feb 1973 9842/73 Heading F2A A bearing assembly comprises sets of rotatable hollow bearing members 1, 1a, 2, the members in the sets 1, 1a being disposed on common axes, and the axes of the members in set 2 being spaced from the said common axes a distance greater than the major external radius of each bearing member, but less than the internal diameter of each bearing member, the bearing members being linked by connecting members 3 of circular cross-section, each connecting member being rotatable on the internal surfaces of the bearing members. The bearing members may be constructed in the form of a laminate in which at least one of the laminations may comprise a resilient material. The connecting members 3 may be provided with internal vanes to assist in dissipating heat. The assembly may form a radial bearing (as shown), a thrust bearing, or a rectilinear motion bearing. In the case of a thrust bearing, the bearing members may be conical in shape.
Patent GB-1419688-A (GB)
IPC: D21F3/08
Filed: 1973-02-28
Abstract: 1419688 Rollers E KUSTERS 28 Feb 1973 [6 June 1972] 9850/73 Heading F2U A roller, e.g. for paper or textile processing, has an outer layer comprising a number of cylindrical roll sections 3 abutted end to end, each section having been separately shrunk on to a common core member 2, wherein the roll sections 3 are composed of a corrosion-resistant steel or of a chill casting, having circumferential grooves formed in their outer surfaces, and one or two layers 4, 5, of thin sleeve members 7, 8, 9 and 10, 11, 12 respectively may be interposed between the sections 3 and core 2. During the shrink-fitting assembly operation, the sleeve members and the pre-heated roll sections 3 are installed alternately in sequence, being passed in one axial direction along the core 2, as indicated by arrow 13, Fig. 2, thereby providing a radial clearance gap, which facilitates the positioning of each roll section 3 and the avoidance of premature contact with the core 2. The sleeve layers 4, 5, may be omitted. Each roll section 3 has annular recesses 14, within which seal rings 15 may be trapped for preventing the entry of moisture.
Patent GB-296016-A (GB)
Title: An improved portable wardrobe trunk
IPC: A45C13/03
Filed: 1928-04-02
Abstract: 296,016. Soc. Anon. Innovation. Aug. 23, 1927, [Convention date]. Garment racks. - In a, portable wardrobe trunk a tubular telescopic sector a has its end rigidly connected to the hinged lid b<1> and body b so that when the trunk is opened the member a is extended; the trunk may be stood on end so that clothes, carried by hangers c<1> slidable on the member a, are available for inspection. While, when the trunk is closed, the hangers are caused to slide flat against one another in the body of the trunk.