baber/WOPTO huggingface dataset:
Patent GB-721111-A (GB)
Title: Improvements in cardboard boxes and hinges therefor
Inventor: YOUNG LEWIS DOUGLAS
IPC: B65D43/16
Filed: 1953-05-15
Abstract: 721,111. Boxes. YOUNG, Inc., D. May 15, 1953, No. 13742/53. Class 18. [Also in Group XXV] In a cardboard box comprising a body and a cover each having a rear wall, which walls lie substantially in one plane with the adjacent edges abutting when the box is closed, the body and cover are connected together by a hinge comprising a pair of metal plates 15, 16 each of which extends along the inner surface of one of the rear walls and has a plurality of holes 20 along its length with a plurality of integral projections 21 disposed along the edge of each hole and embedded in the respective rear wall. The free ends of the projections are clinched over the outer surface of the rear wall, and each' plate also has an opening provided with a lip 24 to engage an inturned end 26 of an arcuate spring 25 adapted to urge the cover from an intermediate position to either the closed or the fully open position.
Patent GB-932816-A (GB)
Title: Brighteners in polyester fibers
IPC: C08K5/3475
Filed: 1961-04-17
Abstract: Polyesters are brightened by incorporating in them a naphtho-triazole brightener of formula <FORM:0932816/IV(a)/1> where X is a hydrogen atom or a chlorine atom.  The polyesters may be those derived from terephthalic or adipic acid and ethylene-, propylene- or butylene-glycol, especially polyethylene terephthalate and poly-1 : 3-propylene adipate.  The brightener may be incorporated (a) by adding it during the polymer-forming reaction, e.g. to the low molecular weight product obtained by reacting dimethyl terephthalate with ethylene glycol in the presence of sodium, (b) by adding it to a melt of the polymer or (c) by impregnating the polymer cloth with the brightener and then heating the cloth to cause migration of the brightener into the polymer (see Group IV(c)).  Delustrants such as titanium oxide may be added at the same time as the brightener. Specification 928,160 is referred to.ALSO:Brightening agents of formula <FORM:0932816/IV(a)/1> where X is hydrogen or chlorine are prepared in a manner similar to that of Specification 932,816 by the use of intermediates obtained by the condensation of 2-chloro-4-nitrotoluene with benzaldehyde, o-, m- or p-chlorobenzaldehyde or 2,4- or 2,5-dichlorobenzaldehyde.  Thus the brightening agent of formula <FORM:0932816/IV(a)/2> is obtained by (a) reacting 2-chloro-4-nitrotoluene with p-chlorobenzaldehyde in the presence of piperidine to give 41-chloro-2-chloro-4-nitrostilbene, (b) reducing this nitro compound dissolved in dimethyl formamide with iron borings and hydrochloric acid to give 41-chloro-2-chloro-4-amino-stilbene, (c) diazotizing this compound and coupling it with 2-naphthylamine to produce a dye and (d) oxidizing this dye with copper sulphate in the presence of picoline to produce the brightening agent.ALSO:Polyester fibres are whitened by distributing throughout each individual filament a whitening compound of formula <FORM:0932816/IV(a)/1> wherein X is a hydrogen or chlorine atom.  The polyester is preferably polyethylene terephthalate or poly-1:3-propylene adipate.  In Example 12, the whitener dissolved in dimethyl formamide is added to a polyethylene terephthalate cloth in an equal bath at 90 DEG C.  The cloth in the bath is agitated and p  thereafter removed, rinsed, dried and heated at 200 DEG C. to cause migration of the whitener into the fibre. Dyestuffs, which are intermediates of the above brightening agents may be obtained in a manner similar to that of Specification 928,160 by (a) condensing 2-chloro-4 nitrotoluene with benzaldehyde, o-, m- or pchlorobenzaldehyde or 2,4 or 2,5-dichlorobenzaldehyde to give a 2-chloro-4-nitrostilbene (b) reducing the compound to give the corresponding amino compound and (c) diazotizing this amino compound and coupling it with 2-naphthylamine.
Patent GB-366383-A (GB)
Title: Improvements in clutch mechanism
IPC: F16D11/10
Filed: 1931-05-09
Abstract: 366,383. Claw clutches. ROBERTSON, J., Township 84, Peace River, Alberta, Canada. May 9, 1931, No. 13759. [Class 80 (ii).] In claw clutches for use in variable-speed gearing &c. a gear wheel such as 8 is mounted on roller bearings 16 on an inner race 9 which is splined to the shaft 6 and held against longitudinal movement by a spring-pressed pin 9 engaging also a stop-collar 17. The inner face of the wheel and of a support plate 20 are cut away to form clutch recesses for engagement by clutch teeth 28 on a clutch member 25 splined to the shaft, the rebated ends 30 of the teeth and the walls between the recesses in the gear wheel being tapered to facilitate clutch engagement.
Patent GB-1056676-A (GB)
Title: Steroids
Inventor: NATHANSOHN GIANGIACOMO
IPC: C07J41/00
Filed: 1964-07-24
Abstract: Novel steroidal a -aminoacids of the formula <FORM:1056676/C2/1> wherein R is a hydrogen or the acetyl group and the dotted line indicates an optional double bond are obtained in a process which comprises hydrolysing a corresponding 17-spiro-androstane-hydantoin with an alkali metal hydroxide at a temperature from 150 DEG  to 200 DEG  C. for 3 to 10 hours in a mixture of water and pyridine or a lower alkanol.  The diacetyl compound is obtained by heating the 17-amino-17-carboxyandrostane with acetic anhydride at 90 DEG C. to the boiling temperature of the acetic anhydride.
Patent GB-905562-A (GB)
Title: Recovery of scrap polyesters
IPC: C08G63/80
Filed: 1959-04-23
Abstract: A process for the preparation of linear condensation polymers of glycols and aromatic dicarboxylic acids comprises (1) mixing U moles, calculated as monomers, of scrap polymer with G moles of the glycol originally used in preparing the scrap polymer and E moles of a lower dialkyl ester of the aromatic dicarboxylic acid originally used in preparing said scrap polymer, the value of G being from 0,05U to 0,2U plus from 1,1E to 2,0E, E being any value including zero, and the ratio of E to U being no more than about 1,0, the mixing being performed under an inert atmosphere at a temperature of from 25 DEG C. less than up to 50 DEG C. more than the boiling point of the admixed glycol under conditions whereby all of the scrap polymer is dissolved and substantially all of any monohydric alcohol is removed thereby forming a monomeric composition composed of bis-glycol esters of said aromatic dicarboxylic acid and low polymers thereof having an average degree of polymerization of less than about 10, (2) heating said monomeric composition under conditions substantially completely removing that portion of the glycol which can be vaporized while forming an active prepolymer having a molecular weight of from about 2,500 to about 12,000, said heating being performed under a substantial vacuum, (3) heating solid particles of said prepolymer with agitation in an inert atmosphere under conditions whereby said particles remain substantially free-flowing and at a temperature from about 10 DEG  to 90 DEG C. below the crystalline melting point of said prepolymer until a molecular weight in the range of 14,000 to 50,000 is achieved, said particles being of a size completely passing through a 20 mesh screen(size of openings 0,841 mm. or 0,331 inch). When calculating the value of U it is necessary to consider 1 gram mole of polymer as being composed of 2 gram moles of monomer, that is to say, one gram mole of glycol and one gram mole of terephthalic acid.  High polymer scrap and also prepolymer which is inactive can be used as the starting material.  Catalyst for the reaction containing zinc, titanium, calcium, magnesium, lead, sodium, antimony, arsenic, rare earths, are listed.  The solid phase polymerization is advantageously performed with the particles of polyester in a fluidized state.  The process can be used to prepare polyethylene terephthalate of intrinsic viscosity at least 0,55 starting from 60 to 110 parts dimethyl terephthalate, 10 to 60 parts scrap polyethylene terephthalate of intrinsic viscosity at least 0,55 and 80 parts of ethylene glycol.  In examples the scrap polymer to which the process is applied is (1) to (4) polyethylene terephthalate; (5) a prepolymer from 2,2-dimethylpropane-diol, 4,41-sulphonyldibenzoic acid and terephthalic acid; (6) inactive polymer prepared from dibutyl sulphonyldibenzoate, succinic anhydride and 1,5-pentanediol; (8) inactive prepolymer prepared from 4,41-sulphonyldibenzoic acid and isophthalic acid (as butyl esters) and 2,2-dimethylpropanediol.
Patent GB-1201715-A (GB)
Title: Improved heat exchanger
IPC: F28F3/04
Filed: 1968-03-21
Abstract: 1,201,715. Plate heat exchangers. MOTOREN-UND TURBINEN-UNION MUNCHEN G.m.b.H. 21 March, 1968 [19 April, 1967], No. 13830/68. Heading F4S. A heat exchanger is formed by bending a metal sheet 1 into zig-zag form along the lines 2 so that elongated corrugations 3, which are inclined at an angle to the fold lines, in each adjacent limb extend cross-wise with respect to each other and the valleys formed at one side of the zig-zag formation form a first set of ducts carrying a primary fluid and the valleys at the other side form a second set carrying a second fluid. The edge portions of the sheet are free of corrugations to assist in the supply and return of a fluid flow 10 and have ribs 4 formed therein to deflect fluid into and out of the ducts from an inlet and outlet connection 9, 9a, respectively, and the second fluid flow 11 enters and leaves the ducts through connections 12, 12a, respectively. Reference is made to Specification 655,470.
Patent GB-551517-A (GB)
Title: Improved method of and apparatus for measuring and indicating the level and/or quantity of liquid in a container
IPC: G01F23/26
Filed: 1941-10-28
Abstract: 551,517. Fuel level indicators. ACKERMAN, M., and SAFFER, L. Oct. 28, 1941, No. 13894. Convention date, Jan. 30. [Class 40 (i)] A capacity bridge of which one of the arms consists of the capacity between two or more plates arranged in a full tank so that the fuel in accordance with its depth fills more or less of the dielectric space is coupled through a shielded transformer and a rectifier to a direct current instrument associated with two shunt resistances R1, R2 provided respectively for making minor calibration adjustments and for altering the range of the instrument so that, for example, a full scale deflection is given with the tanks only half full. Preferably a switch is provided whereby, for calibration purposes, condensers having capacities equal respectively to the full and empty capacities of the tank condenser may be substituted for the latter. To avoid danger of arcing in the tank the condenser plates may be embedded in insulating material and may be connected in series with a condenser of much larger capacity.
Patent GB-586122-A (GB)
Title: Improvements in tunable electric resonators for ultra high frequencies
IPC: H01P1/28
Filed: 1942-10-02
Abstract: 586,122. Tuning pistons. STANDARD TELEPHONES & CABLES, Ltd., FREMLIN, J. H., and JAQUES, T. A. J. Oct. 2, 1942, No. 13895. [Classes 40 (iii) and 40 (v)] A piston for tuning a resonator of the waveguide or coaxial conductor type comprises a number of sections which, with the tube in which it moves, form transmission line elements which are alternately of high and low characteristic impedance and so transmit one or more ranges of wavelengths and reflect another range. As shown in Fig. 1, the piston comprises portions 3 of a diameter approaching that of the tube alternating with portions 4 of small diameter fitted with insulating discs of polystyrene to locate the piston on the tube. The piston shaft may be hollow to provide a conduit for a conductor 5 looped at, 6 for drawing energy from the resonator. In a modification, Fig. 4, for tuning a velocity-modulation tube similar to that described in Specification 537,490, the piston comprises alternate members of conducting and insulating material. The insulating members in both arrangements may be of the form shown in Fig. 3. Other dispositions of insulating material for locating the piston in the tube are referred to. Design formulµ are given in the Specification. Resonators tuned by such pistons may be used in wave meters and harmonic generators. Specifications 579,414 and 581,883 also are referred to.
Patent GB-543619-A (GB)
Title: Improvements in and relating to piston pumps
IPC: B60P1/16
Filed: 1940-09-05
Abstract: 543,619. Synthetic resin articles. BROMILOW & EDWARDS, Ltd., and SWIFT, H. W. Sept. 5, 1940, No. 13902. [Class 2 (iii)] [Also in Group XXVIII] In a piston pump the crankcase 1, body portion 12, cylinder block 13, and pistons or plungers 15 are moulded from a thermosetting material, with or without metal reinforcement, and the cylinders are lined with metal sleeves 14. The pump may be of the construction described in Specification 543,618, [Group XXVIII], in which case the poppet valves 23 and the valve seats 24 also may be moulded from thermo-setting material, with or without metal or other reinforcement.
Patent GB-592970-A (GB)
Title: Amino dianthrimide acridones
IPC: C09B5/34
Filed: 1945-06-02
Abstract: 1.11 - Dianthrimide - 2.21 - acridones and 2.11-dianthrimide-1.21-acridones having an amino group in an alpha-position of a terminal nucleus are prepared by treating the corresponding alpha-acylamino o-carboxy or o-cyano dianthrimides with concentrated sulphuric acid at temperatures between 50 DEG  and 150 DEG  C.  The acyl radical may be acetyl, oxalyl or benzoyl.  In examples, the following substances are ring-closed in sulphuric acid: (1) 5-benzoylamino-1.11 - dianthrimide - 21 - carboxylic acid; (2) 5 - benzoylamino - 2.11 - dianthrimide - 21 - carboxylic acid; (3) 8 - benzoylamino - 1.11 - dianthrimide - 21-carboxylic acid; (4) 5-benzoylamino-11-cyano-1.21-dianthrimide.  The alpha-acylamino-o-carboxy or o-cyanodianthrimides referred to above and particularly those listed under 1, 2, 3 and 4, are prepared by reacting an ester of an o-chloranthraquinone carboxylic acid and a mono-acylated heteronuclear diaminoanthraquinone or by reacting an o-aminoanthraquinone carboxylic acid ester with a heteronuclear chlor-acylamino-anthraquinone, followed by hydrolysis of the ester to the carboxylic acid in alkaline medium, and by reacting an o-bromcyanoanthraquinone with a mono-acylated diaminoanthraquinone.
Patent GB-139201-A (GB)
Abstract: 139,201. Blaustein, J. April 20, 1917, [Convention date]. Adding and subtracting apparatus. - In machines of the key-set, lever-operated type having flexible keyboards, each bank of keys with the associated mechanism is mounted as a unit, actuation being obtained by the engagement or pins on the keys with differentially sloping members on longitudinally-moving plates. Movement of these plates is communicated through multiplying links to sliding plates carrying broadleaved pinions carried by setting-shafts adapted to be engaged and rotated, to an amount corresponding to the keys depressed, by cylinders bearing stepped teeth. Locking-means for the setting-shafts, justifying and restoring devices for the longitudinally moving plates are provided. Differential mechanism.-Movement of the plates 31 due to the engagement of pins 30, Fig. 2, on the keys with differentially sloping faces 34 is communicated to slotted plates 37 moving on pins 39 carried on sectional plates 3, Fig. 7, by extensions of links 32 upon which the plates 31 are carried. Secured to the plates 37 are members 40, Fig. 8, engaging reduced portions between broad-leaved pinions 14 and smaller pinions 42, which are formed in one therewith and adapted to slide upon and rotate with setting shafts 11 carried by the main casing. Mounted on a series of shafts 9, rotated by bevel gearing from the main crank-shaft 6, are stepped cylinders 53 and toothed cylinders 43, the teeth being stepped so that the number thereof engaging the pinions 14 after setting corresponds to the key depressed. Locking-devices for the setting-shafts 11 during inactive periods comprise spring-depressed pawls 49 adapted to engage the pinions 42. The pawls are mounted on rocking-shafts 46 carried by the plates 40 and are lifted when projections 51 on the shafts are struck by the appropriate steps 52 of the cylinders 53, the pawls being retained in this position by contact with the surfaces of the cylinders. Justifying-means for the longitudinally moving plates 37 comprise teeth 71 thereon engaged by a knife edge 73 carried by arms 74 secured to a shaft 75 which is rocked through an arm 76 by a cam 77 on the crank shaft. Keyboards; keyboard interlocks.-The keys are formed from sheet metal and provided with wings 26, Fig. 7, having sloping faces 27 and locking- faces 28. Pivoted in the sections are angle-plates 54 adapted to be rocked against gravity by the faces 27 and to lock the depressed keys by engagement with the faces 28. Release on the completion of an item is effected by a bell-crank lever 57, Fig. 2, rocked by a cam 56 on the shaft 6. The plates 31 are returned to their original positions by arms 68, Fig. 2, on a shaft 65 engaging pins 69 on the plates, the shaft 65 being rocked by a cam 67 on the shaft 6. Error levers.-The shaft 65 may be rocked from the exterior bv an external handle 65<1>, such movement serving to return the plate 31 to its original position and also to release any wrongly depressed keys. Displaying items.-Numeral-bearing drums 80. Fig. 2, are rotated to show the item set up bv racks 78 mounted on the reciprocating plates 37.
Patent GB-874179-A (GB)
Title: Layer-form structures of improved resistance to light containing aminoplasts
IPC: C07D307/46
Filed: 1958-05-01
Abstract: A composition for use in preparing laminates having an improved resistance to the effects of light contains an aminoplast and 2 : 4-di-hydroxybenzoyl-furan.  The aminoplast may be: a urea-formaldehyde resin; a condensation product of formaldehyde and a compound such as dicyandiamide or melamine containing the grouping: <FORM:0874179/IV (a)/1> or a compound, such as cyanamide, easily converted to such compounds; methylol derivatives of melam, melem, ammeline, ammelide or halogen-substituted aminotriazines, such as 2-chloro-4; chloro-4 : 6-diamino-1 : 3 : 5-triazine; methylolguanamines; ternary condensation products obtained by reacting in any sequence (a) methylol compounds of amino-triazines or their ethers with low molecular-weight alcohols; (b) aliphatic alcohols, carboxylic acids, carboxylic acid amides or methylolamides containing a chain of at least seven carbon atoms, and (c) primary or secondary amines or tertiary alkanol-substituted amines; and condensation products of formaldehyde and guanyl-melamines, which may be made by treating dicyandiamide in an inert solvent in the hot with gaseous hydrogen halides, and separating the free amines from the salts by addition of strong alkalies.  The Specification also refers to the use of salts of these condensation products with inorganic or organic acids, e.g. hydrochloric, sulphuric, formic, acetic, propionic and glycollic acids, and to urethane resins, sulphonamide resins and aniline resins.
Patent GB-514629-A (GB)
Title: Improvements in or relating to safety devices for machine tools
IPC: F16P3/04
Filed: 1938-05-10
Abstract: 514,629. Drilling machines; punching. STANDARD TELEPHONES & CABLES, Ltd. WIPPLEMAY, F., and'POWELL, G. S. May 10, 1938, No. 13944. [Classes 83 (iii) and 83 (iv)] [Also in Group XXIV] In a machine tool, such as a drilling-machine or a punch press provided with a worktable 3 slidably mounted relatively to the punchcarrying ram, the table 3 is actuated by a handle 11, through toggle mechanism 9, and the press ram (not shown) by a lever 24, and the table is provided with a slide member 25 which is adapted to co-operate with a slot in a control rod 27, associated with lever 24, and prevent depression of the lever to actuate the ram except when the table is pushed into operating position and a cut-away portion 26 of the slide member is in alignment with said control rod. A safety guard or guard portion 21, which permits access to the table when the latter is moved outwardly of the machine but prevents access thereto when moved inwardly, is secured upon the front of the table; guard parts'16, 17, hingedly secured together at the rear of the press and connected at the front by wing nuts 19, may also be provided.
Patent GB-930269-A (GB)
Title: Improvements in the production of fired ceramic or cermet objects
IPC: B22F3/00
Filed: 1960-04-21
Abstract: A sintered ceramic or cermet is produced by immersing a green compact of the material in a bath of molten metal having a specific gravity approximating to that of the green compact and which is inert to the material and heating to the sintering temperature.  In the case of alumina, the shaped compact is sintered in molten aluminium at 1340 DEG  C. in argon and after removal from the bath any adhering aluminium is removed with hydrochloric acid.  Cermets containing appreciable quantities of Be or Zr may also be produced.ALSO:A fired ceramic or cermet is produced by immersing a green ceramic or cermet compact in a bath of molten metal having a specific gravity approximating to that of the green compact and which is inert to the material and heating to the sintering temperature of the material. Pure alumina or alumina mixed with 2% CaCo3 and zinc stearate is shaped, dried and immersed in a molten aluminium bath at 700 DEG C. and the bath and compact are heated to 1340 DEG C. in argon.  After removal from the bath any aluminium adhering to the sintered compact is removed by treating with hydrochloric acid and the compact may be refined in an air kiln at 1340 DEG C., or at 1700 DEG C. in hydrogen in the case of pure alumina.  The ceramic mixture may also contain other compounds of Al, Mg, Be and Zr and cermets containing a ceramic and metals such as Be or Zr may also be produced.
Patent GB-786848-A (GB)
Title: Improvements in or relating to lids for the keys of key instruments
IPC: G10C3/02
Filed: 1956-05-07
Abstract: 786,848. Pianofortes. C.A.V. LUNDHOLM AKTIEBOLAG. May 7, 1956 [May 6, 1955], No. 14135/56. Class 88 (2). The front panel 7 above the keyboard is pivoted at 9 and may be swung forward so that the keyboard-cover 4, 5 may be folded away behind it in the position 4<SP>1</SP>, 5<SP>1</SP>. The panel 7 carries a music-rest 10 which serves as a handle. Linkage of a known type may be provided whereby the raising and lowering of the panel 7 brings about the required movements of the keyboard-cover 4, 5.
Patent GB-797285-A (GB)
Title: Improvements relating to electric warming devices for bed pans and urinal bottles
IPC: A61G9/00
Filed: 1955-05-16
Abstract: 797,285. Electrically heated cabinets. TURNER, F. C. April 19, 1956 [May 16, 1955], No. 14136/55. Class 39(3) [Also in Group XIII] A warming device for bed pans &c. comprises a ventilated thermally uninsulated cabinet provided with electrical heating means, the power of the heating means and the heat dissipation capacity of the cabinet being so co-ordinated that a pre-determined steady temperature will be maintained in the cabinet without thermostatic control. As shown, the cabinet 1 has a completely open bottom 2, and a closed top 3 with louvres 4. The ends 5 and back are closed, and the front wall is mainly formed by a hinged door 6, which opens to a horizontal position, where it is supported by chains 7. Disposed longitudinally within the cabinet and just above the open bottom are two "block heat " heating elements 8, which have a terminal box 9 and an indicator lamp 11. An internal framework 12, 13, 14 holds bed pans in a tilted position, and a perforated shelf 15 is provided for urinal bottles.