baber/WOPTO huggingface dataset:
Patent GB-987061-A (GB)
Title: Vitamin a compositions
IPC: A61K31/59
Filed: 1961-05-18
Abstract: A Vitamin A composition comprising an isomeric mixture of an ester of synthetic Vitamin A alcohol consisting essentially of 50 to 60% of the all-trans isomer, 15 to 25% of the 2-cis isomer, 15 to 20% of the 6-cis isomer, and 5 to 10% of the 2,6-di-cis isomer may be made by isomerizing all-trans Vitamin A aldehyde with an acidic material to obtain an isomeric aldehyde mixture corresponding to the above mixture, reducing the aldehyde mixture to the corresponding aldehyde mixture and esterifying the resulting corresponding isomeric aldehyde mixture. The isomeric mixture may also be produced by mixing together the 4 isomers in the proportions stated.  In a preferred process a compound having the formula <FORM:0987061/C2/1> wherein R is an alkyl radical having 1-8 carbon atoms is dehydrated and hydrolysed with hydrochloric acid, chloroform, or carbon tetrachloride as described in Specifications 732,066 and 768,794, reduced to the corresponding alcohols with lithium aluminium hydride, sodium borohydride or potassium borohydride and then esterifying with acetic anhydride or palmitoyl chloride; or with methyl acetate or methyl palmitate in the presence of an alkaline catalyst as described in Specification 816,224.ALSO:A stable Vitamin A composition comprises an isomeric mixture of an ester of synthetic Vitamin A alcohol consisting essentially of 50-60% of the all-trans isomer, 15-25% of the 2-cis isomer, 15-20% of the 6-cis isomer and 5-10% of the 2,6-dis cis isomer. This may be made according to the methods described in Division C2.  A preferred multivitamin aqueous dispersion comprises Vitamin A palmitate isomers of the invention, thiamine mononitrate, riboflavin-5-sodium phosphate, nicotinamide pyridoxine hydrochloride, d-panthenol, ascorbic acid, Vitamin B12.  Vitamin A acetate isomers may also be used, and Vitamin E and K may also be added. Specifications 732,066 and 768,794 are referred to.
Patent GB-185273-A (GB)
Title: Improvements in and relating to spring mattresses and the like
IPC: A47C23/30
Filed: 1921-07-04
Abstract: 185,273. Faith, C. July 4, 1921. Mattresses.-The woven wire surface a is held in tension by helical springs b, and additional support is furnished by levers e, which are attached at their upper ends to the woven wire a and at their lower ends by tension springs g to a cross-bar f. The edge f<1> of the bar f forms the fulcrum of each lever e.
Patent GB-399944-A (GB)
Title: Improvements in or relating to hand bags
IPC: A45C3/06
Filed: 1932-06-27
Abstract: 399,944. Handbags. FLINT, A. W., 2, Harewood Place, Hanover Square, London. June 27, 1932, No. 18132. [Class 133.] A handbag handle consists of superimposed straps b, c maintained in contact by rings or slides h, each strap being permanently connected to the bag at one end, and detachably connected to the base of the bag at the broadened end i, for instance by a pressbutton d. When the fastenings d are released, the straps may be drawn out to form a shoulder strap, enabling the bag to be carried as a satchel. External and internal pockets or compartments are provided, one of the interior ones being rendered waterproof. The mouth of the bag has a sliding-clasp closure.
Patent GB-1508783-A (GB)
Title: Apparatus for comparing refractive indices
IPC: G01N21/45
Filed: 1975-05-23
Abstract: 1508783 Determining refractive indices KODAK Ltd 23 May 1975 [25 April 1974] 18145/74 Heading G2J [Also in Division G1] A device for determining refractive indices comprises two parallel sided cells, shown in plan, one on top of the other in Fig. 2, whose front faces are parallel and facing the same direction, a parallel line grating 2 of such coarseness that diffraction effects are insignificant, and a source of light oblique to the front face of the cells. As shown the cells displace a light beam to different extents and therefore the emerging array of light beams from the top cell is displaced with respect to that of the lower cell. The emerging light beams are caused to pass through a second coarse grating 3 (or are reflected back through the original grating) whose lines are parallel with grating 2, and the moirÚ patterns are observed (e.g. directly or on a screen), their relative displacement being related to the refractive index difference. Several arrangements are possible. Photo-electric observation of the fringes may be employed.
Patent GB-968742-A (GB)
Title: Improvements in or relating to sodium perborate trihydrate
IPC: C01B15/12
Filed: 1962-05-11
Abstract: Sodium perborate trihydrate, NaBO3.3H2O or NaBO2.H2O2.2H2O of coarse grain, e.g. 0.5-2 mm., is made by crystallizing a highly concentrated aqueous sodium perborate solution having an atomic or molecular ratio of Na : B : active oxygen : H2O of approximately 1 : 1 : 1 : max. 7 in the presence of at least 10% by weight of solid sodium perborate trihydrate based on the weight of the final product, at a temperature of 15 DEG  to 85 DEG  C.  The crystalline product may be dried.  The highly concentrated solution of perborate may be obtained by the reaction of boric acid, borax or sodium metaborate with hydrogen peroxide or sodium peroxide with/without the use of caustic soda and the addition of water; alternatively the perborate solution may be made by melting dry or moist sodium perborate tetrahydrate and maintaining the melt at 70 DEG  C. for a few minutes with or without the addition of hydrogen peroxide.  The dustless granulate may be used directly in the preparation of bleaching or self-acting washing agents and is formed mechanically e.g. with the aid of a roll from a highly concentrated solution or plastic mass before or during its crystallization. The trihydrate used for seeding may be that obtained by the process.  Stabilizers may be added to mixture to be crystallized, e.g. sodium stannate, sodium silicate, magnesium silicate, magnesium chloride and potassium pyrophosphate. Specifications 737,304 and 802,434 are referred to.
Patent GB-102968-A (GB)
Title: Improvements in or relating to Friction Driven Drop Hammers.
Inventor: SCOTT JAMES LIVESEY
IPC: B21J7/44
Filed: 1916-12-21
Abstract: 102,968. Scott, J. L., and Scott, E. Dec. 24, 1915, [Convention date]. Clutches, friction.-The tup of a drophammer is raised through the operation of a plate clutch. The rope or the like 54, Fig. 1, supporting the tup is connected to a pulley 23 which has notches on its hub 24, Fig. 4, engaging plates 20, which are arranged on either side of plates 18 engaged by projections 14 on a driven gear 10. A collar 26 fixed to the pulley 23 has inclines engaging corresponding inclines on a rotatable ring 29. The ring cannot move to the right owing to the adjustable nut 32, so that if it is rotated, the pulley is moved to the left, the plates grip, and the tup is raised. The ring 29 has a projection 37, Fig. 13, which is moved by a slide 38 operated by a lever 44, Fig. 1, and quadrant. The tup continues to rise until one of the steps 40, Fig. 13, on the ring 29 comes into contact with a stop 41, which is moved into the desired position or at the desired time bv another lever 47, and quadrant. The plates 18, 20 are thus released, and the tup falls, the momentum of the pulley being absorbed by a fixed buffer 43, Fig. 1, engaging a projection 52, Fig. 4, thereon. The tup may be kept in the raised position by any of the pawls 55, Fig. 1, which are withdrawn by a treadle 57.
Patent GB-108110-A (GB)
Title: Improvements in Automatic Pressure Releasing Devices for the Rollers of Clothes Wringers.
Inventor: WRIGHT REA PATTISON
IPC: D06F45/00
Filed: 1916-12-22
Abstract: 108,110. Wright, R. P. Dec. 22, 1916. Wringers, rollerseparating arrange. ments for.-The topbar 5 is held down by pivoted latches 18 which are pushed aside by sliding bars 21 lifted by the upper roller axle w h e n abnormally raised. The bars 21 carry pins 23 which slide in slots in the guides 22; their upper ends engage with the cam slopes 19 of the latches 18, and their lower ends carry adjustably mounted trip members 28 against which the roller axle 8 presses when unduly raised. Alternatively, the trip members may be raised by lateral extensions of the upper bearings 6. Reference has been directed by the Comptroller to Specifications 110,605 and 110,606.
Patent GB-1521425-A (GB)
Title: Manufacture of polyvinyl chloride foams
IPC: B29C67/00
Filed: 1976-05-05
Abstract: 1521425 Mixing apparatus WACKER CHEMIE GmbH 5 May 1976 [9 May 1975] 18484/76 Addition to 1505740 Heading BIC [Also in Division C3] High-speel mixing apparatus used to foam pulverulent or granular foamable vinyl chloride polymers by generating heat by friction within the mixer (see Div. C3) comprises a concentric rotary mixer with a rotor mounted within a stator and with an annular gap between the rotor and stator through which the foamable polymers can be passed. The mixer may be as shown in Fig. 1, wherein a cylindrical stator 8 has coaxially situated therein a cylindrical rotor 18 which is driven by an electric motor (not shown) by means of drive shaft 9 in housing 13; a feed screw 6 supplies the mixing zone consisting of the annular gap 19; rotor 18 has, below the feed screw 6, on its surface lozenge-shaped studs whose sides define two helices of different pitch and the inner surface of stator 8 may have vertical ribs and grooves; flowable additives may be fed into the mixing zone 19 via inlet 3 and the foamed mixture leaves the mixer through an outlet (not shown) below 19; inlet 4 and outlet 5 are used for heating or cooling fluids jacketing the stator 8; drive shaft 9 has a seal 10 supplied with sealing liquid via inlet 12 and outlet 11. A mixer similar to Fig. 1 is shown in Fig. 2 having a rotor 18 which is part cylindrical and part frustoconical with stator 8 being of similar shape; feed screws 15 and 16 supply two pre-heating zones, the composition entering 16 under pressure and 17 constitutes the mixing zone.
Patent GB-186290-A (GB)
Title: Improvements in and relating to coin slot closing devices
IPC: G07F15/08
Filed: 1921-03-07
Abstract: 186,290. Anderson, J. March 7, 1921. Gas, supplying by meter; coin-slit closing-devices.-In a prepayment meter, a slotted rod a passing through the member b containing the in. sertion slot e is rotated to close the slot when the maximum number of coins have been inserted. The rod is held with its slot and the slot e in register by a spring c. It is rotated by a cam carried on a crown wheel as described in Specification 183,157 acting on a crank d.
Patent GB-111371-A (GB)
Title: Improvements in the Manufacture of Annealing Pots.
Inventor: DAWES JOSEPH
IPC: C21D9/00
Filed: 1916-12-27
Abstract: 111,371. Dawes, J. Dec. 27, 1916. Annealing-boxes.-An annealing-pot is pressed or stamped from a single blank of steel, the dies being arranged to form indentations such as b, c, d in the sides and bottom of the pot.
Patent GB-530482-A (GB)
Title: Improvements in means for propelling bicycles and the like
IPC: B62M1/10
Filed: 1939-06-26
Abstract: 530,482. Pedal-crank driving - mechanism. THOMAS, W. A., and WELLS, J: J. June 26, 1939, No. 18514. Convention date, March 24. [Class 136 (ii)] In driving-mechanism for, bicycles &c. one of the pedal cranks 9 is continued beyond the crank shaft 6 in the form of an extension arm 13, secured, as by screws 15, to the sprocket wheel 3, which is loosely mounted on the shaft 6, and the extension arm 13 is counterbalanced by one or more weights on the sprocket wheel or crank. As shown, two weights 16 are secured to the sprocket wheel 3 by screws 17 and clamping- plates 18.
Patent GB-642855-A (GB)
Title: Improvements in or relating to phase multiplying devices
IPC: H03H11/22
Filed: 1948-07-09
Abstract: 642,855. Phase changing automatic phase centre) systems. GENERAL ELECTRIC CO., Ltd., and BRYDEN, J. E. July 9, 1948, Nos. 18574 and 25141. [Classes 38 (ii) and 38 (iv)] In a single-polyphase converting system suitable for supplying phase shift devices as described in Specification 632,007, the single phase input at 14 energizes the grids of a valve VI and, through an inter valve coupling circuit, of a valve V2 and the polyphase (in this case 6-phase) output is taken from the terminals PI-P6 of the secondaries 10, 11, 12, 13 of Scott connected transformers 1, 9. The necessary 90 degree phase difference between the voltages in the primaries 6, 8 of transformers 1, 9 which are in the circuits of valves V1, V2, result from the 90 degree phase shift produced by the condenser C, resistance R and transformer secondary 3 which together form the intervalve coupling circuit. The 90 degree phase change may be kept constant with change in frequency by varying C. Deviations from 90 degrees may be shown by an indicator (not shown) connected across terminals 19, 20 in a phase discriminator circuit which com, prises wiridings 12 of transformer 9, the earthed half 106 of winding 10 of transformer 1, rectifiers 15, condensers 16 and resistances 17 (see Figure accompanying the Complete Specification). Such deviations may be automatically kept to a low value by replacing the indicator by a device which controls a motor varying condenser C as shown in the Figure accompanying the Complete Specification. A continuously vibrating contact 21 and blocking condenser 25 feed a signal of square wave shape and proportional to the extent of deviation through an amplifier 23 and valve 26 to two relays 27, 28 which are alternately short circuited by a contact 29 vibrating in synchronism with contact 21. One or other of the relays is operated to drive the motor and vary C to reduce the deviation to zero.
Patent GB-438707-A (GB)
Title: Improvements in and relating to refrigerating machines
IPC: F25D11/00
Filed: 1935-06-28
Abstract: 438,707. Refrigerating. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. June 28, 1935, No. 18587. Convention date, June 29, 1934. [Class 29] The evaporator 16 of a refrigerating machine comprises a horizontal freezing shelf portion and a vertical air cooling portion which contain communicating passages 31 and 32 through which liquid refrigerant is circulated, and these passages are connected to a header 27 by connections 26 and 37 which allow of a re-circulation of refrigerant. Refrigerant from the condenser of the machine enters the evaporator passages through a jet 34 and thus facilitates circulation in the evaporator. The passages in the two portions are connected in series between tubes 26 and 37. In an alternative construction the inlet of passage 32 is connected to the conduit supplying refrigerant from the condenser and the outlet of passage 31 is connected to passage 26. A small proportion of fresh refrigerant enters the passage 31 through the jet 34 in this construction ; the greater part that passes therethrough consists of re-circulated refrigerant. The pipe 28 which returns evaporated refrigerant to the compressor opens within a baffle 38 in the header. Lubricant oil collecting on the refrigerant is withdrawn through pipe 28 and the baffle serves as a precaution against the withdrawal of refrigerant therewith in the event of agitation of fluid in the header. The condensate receiver of the refrigerating machine and the header 27 are embedded in the insulation of the cabinet. The condenser coil of the refrigerating machine is secured in contact with the inner surface of the outer casing of the cabinet.
Patent GB-638434-A (GB)
Title: Improvements in or relating to flame-resistant finish for fibrous cellulosic materials
IPC: D06M15/433
Filed: 1947-07-14
Abstract: 638,434. Flame-proofing fibrous cellulosic materials. AMERICAN CYANAMID CO. July 14, 1947, No. 18644. Convention date, Aug. 20, 1946. [Class 140] Flame-resistance is imparted to fibrous cellulosic materials such as yarns, threads or fabrics of cotton, regenerated cellulose, cellulose esters or ethers, paper or paper board, by incorporating in the material one or more aminotriazine pyrophosphates. The pyrophosphates of melamine, melam, melem, ammeline, ammelide, substituted melamines such as guanyl melamine, guanamines such as formo- or aceto-guanamine may be used, optionally in conjunction with a binder such as a phenol-, urea-, or aminotriazine-aldehyde resin, or an alkyd resin to prevent mechanical separation of the pyrophosphate from the treated cloth, paper or the like. The pyrophosphates, which are water-insoluble, may be applied directly in finely divided condition, e.g. as a suspension in water or in a resinous material used as binder. They may be formed in situ by impregnating the fibrous cellulosic material, first with an aminotriazine or a water-soluble aminotriazine salt such as melamine or guanyl melamine hydrochloride, and later with pyrophosphoric acid are a water-soluble salt thereof such as disodium dihydrogen pyrophosphate. Alternatively, the fibrous material may be impregnated with materials capable of forming an aminotriazine or its pyrophosphate upon further treatment, e.g. heat. Thus the fibrous material may be impregnated with an aqueous solution of guanidine phosphate, guanylurea phosphate, biguanidine phoshate, or ammonim cyanate, and heated to produce an aminotriazine or an aminotriazine pyrophosphate, the aminotriazine being further treated to produce its pyrophosphate. The addition of substantial quantities of urea, cyanamide, dicyandiamide, biuret, or ammonium cyanate and, if desired, small quantities of hexamethylene tetramine prevents tendering of the fabric during the conversion of guanidine phosphate, guanylurea phosphate, or biguanide phosphate to aminotriazine pyrophosphates, The resinous binders may be aqueous solutions or syrups of aminotriazine aldehyde condensation products such as melamine-formaldehyde resins, organic solvent-soluble resins obtained by reacting methylol melamines with alcohols such as methanol, butanol, or octanol in the presence of acidic etherification catalysts such as oxalic acid or phthalic anhydride, dimethylol urea, methylated or butylated dimethylol urea.
Patent GB-668327-A (GB)
Title: Improvements relating to conveyors for transporting bottles, crates and the like
IPC: B65G15/10
Filed: 1949-07-15
Abstract: 668,327. Endless conveyers. MORREY, S. July 17, 1950. [July 15, 1949] No. 18663/49. Class 78 (i). Bottles, crates and the like are conveyed between guides g by endless ropes or cables f which extend along a channel e<SP>1</SP> on the opposite sides of a flange e<SP>2</SP> and are proud of the channel and flange.
Patent GB-727374-A (GB)
Title: Improvements in or relating to devices for controlling the supply of gaseous fuel toburners
Inventor: CAPARONE MICHAEL J
IPC: F23N5/10
Filed: 1953-07-06
Abstract: 727,374. Valves. ROBERTSHAW-FULTON CONTROLS CO. July 6, 1953 [Aug. 2, 1952], No. 18691/53. Class 135. The pressure of gaseous fuel supplied to a burner from an inlet chamber 12 to an outlet chamber 14 is controlled by a valve 26 which is urged to the open position by a spring 52 and is controlled by a pressure-responsive member 32 secured to the stem of the valve, and the armature 76 of an electromagnet 66, normally held in attracted position by current flowing round the magnet all the while a pilot flame 58 is heating a thermo-electric device 68, is projected by a spring 80 to contact and force the valve to the closed position when the current is cut-off on the pilot flame being extinguished. The current developed by the thermo-electric device is not sufficient to overcome spring 80 and move the armature from the projected position to the attracted position and this must be done by a spring-loaded resetting knob 84 which, when depressed, contacts the valve stem to move the valve to the open position and, at the same time, force the armature on to the magnet. The latter is of inverted U-shape.
Patent GB-658017-A (GB)
Title: Non-shanking golfing irons
IPC: A63B53/04
Filed: 1949-07-18
Abstract: 658,017. Golf clubs. KLEIN, G. F. July 18, 1949, No. 18838. [Class 132 (ii)] The hosel 2 of a golf iron merges into the rear of the head 1 so as to leave an uninterrupted striking face 4 which projects slightly at the heel end of the head, the junction of the head and hoset acting as a weight to throw the centre of gravity of the head nearer to the heel. The thickness of the head tapers from bottom to top and from heel to toe. A flat 11 is formed on the top of the head, the bottom of which is also flattened to form a sole 12. U.S.A. Specification 1,550,501 is referred to.
Patent GB-516439-A (GB)
Title: Improved manufacture of hollow tappets for internal combustion engines
IPC: B22C9/24
Filed: 1938-06-25
Abstract: 516,439. Moulding processes. SMITH, C. R., and SMITH, A. B. June 25, 1938, No. 18862. [Class 83 (i)] Patterns d, Fig. 7, and d<1>, Fig. 9, are made of each half of a tappet a, Fig. 1, and are mounted on pattern e, e<1> by which they are printed in moulds f, f<1>. After drawing, the moulds are assembled on a chill plate, the top being closed by another mould section carrying pouring gates &c. The end of the tappet remote from the chilled face may be moulded with a hole at m, Fig. 9. There may be one or more side openings b.
Patent GB-1287527-A (GB)
Title: Polyolefine films
IPC: B29C55/12
Filed: 1970-04-21
Abstract: 1287527 Polyethylene films IMPERIAL CHEMICAL INDUSTRIES Ltd 20 April 1971 [21 April 1970] 18992/70 Heading B5B A process of producing a film or tape of high density polyethylene or a copolymer thereof having a shrinkage not exceeding 10% in either the longitudinal or transverse directions when maintained for five minutes at a temperature of 120‹ C., without heat setting, comprises heating a film or tape of high density polyethylene or a copolymer thereof having a density greater than 0À935 gm./cm.<SP>3</SP>, after extrusion, and optionally, cooling to a temperature within the range of from 18‹ to 3‹ C. below the crystalline melting point of the polymer or copolymer and biaxially stretching the film or tape at draw ratios of at least 6À5 : 1 in mutually perpendicular directions in the plane of the film or tape at that temperature, the maximum temperature to which the film is heated being the stretching temperature. The film or tape may be stretched simultaneously in each direction, and a balanced film or tape may be made by employing substantially equal draw ratios in the two directions. Preferred biaxial draw ratios are from 6À5 : 1 to 9 : 1. Preferred stretching temperatures are from 128‹ to 134‹C. Polyethylene or polyethylene copoylmer film so made may have a shrinkage in the longitudinal and transverse directions not exceeding 5%, and a tensile strength at break in the longitudinal and transverse directions exceeding 20,000 p.s.i. Such film may have a twist retention of about half a twist after twisting 1À5 times and being allowed to relax for about 24 hours. A preferred polyethylene or copolymer film has a shrinkage in the longitudinal and transverse directions of 2 to 4% when heated for five minutes at 120‹ C., a tensile strength at break in excess of 25,000 p.s.i., and an elastic modulus (1% secant) greater than 3 x 10<SP>5</SP> p.s.i. Films so made may be utilized as packaging material, and are especially useful for twist wrapping.