baber/WOPTO huggingface dataset:
Patent GB-767705-A (GB)
Title: Improvements in the preparation of photographic developing agents
IPC: C07D231/20
Filed: 1954-08-03
Abstract: Pyrazolidones of the formula <FORM:0767705/IV(b)/1> where R is phenyl, substituted phenyl or a heterocyclic radical, are prepared by heating hydrazides of the formula R.NH.NH.CO-CH2.CH2OH in an inert organic solvent boiling at 110 DEG  C. or above, in the presence of an acid dehydration catalyst.  Suitable solvents are toluene, o-xylene, chlorobenzene, 1 : 1 : 2-trichlorethane and 1 : 2-diethoxyethane. Suitable catalysts are sulphuric, hydrochloric, methanesulphonic and p-toluenesulphonic acids.  Examples are given of the preparation of compounds where R is phenyl, p-(b -hydroxyethyl)-phenyl, o-, m- and p-tolyl, p-nitrophenyl, p-cyanophenyl, p-(b -methanesulphonamido - ethyl) - phenyl and 2-benzthiazolyl.  In a further example bis-p-(3-oxo-1-pyrazolidino)-benzyl ether is obtained from hydracrylic N1-p-(morpholinomethyl)-phenyl-hydrazide.  Other products are mentioned in which R is m-nitrophenyl, p-chlorophenyl and p-carboxymethyl-phenyl.  Starting materials are described in which R may also be o-nitrophenyl, o- and m-chlorophenyl, and o-, m- and p-bromophenyl.  The substituent in the phenyl group must be inert to the reaction conditions and it is stated that the process is inoperative if R is hydroxymethylphenyl, o-hydroxyethylphenyl, methoxyphenyl, acetamidophenyl, acetoxyphenyl, hydroxyphenyl or aminophenyl.  Hydracrylic N1-substituted hydrazides of the above formula are prepared by reacting propiolactone with the appropriate hydrazine.  Examples are given where the N1-substituent is phenyl, o-, m- and p-tolyl, p-(b -hydroxyethyl)-phenyl, p-nitrophenyl, p-cyanophenyl, p-(b -methanesulphonamidoethyl) - phenyl, 2 - benzthiazolyl and p - (morpholinomethyl) - phenyl. The N1-p-chlorophenyl compound is also mentioned and hydrazines are specified where the substituents are o- and m-nitro, o- and m-chloro and o-, m- and p-bromo.  p - (b  - Hydroxyethyl) - phenylhydrazine and p - (morpholinomethyl) - phenylhydrazine are made by reduction of the corresponding diazonium salts.  Specification 650,911 is referred to.
Patent GB-464022-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F01B7/14
Filed: 1935-08-09
Abstract: 464,022. Two-stroke engines ; valves. PATCHETT, G. W. Aug. 9, 1935, Nos. 22535 and 34214. [Classes 7 (ii) and 7 (vi)] In an engine wherein a working piston 2 and a secondary piston 4 are disposed in a cylinder 1, the piston 4 being actuated by a connecting rod 12 attached to a crank-pin 9a on a shaft which is driven by gearing from the main crank-shaft, the angularity of the secondary crank is such that the piston 4 moves away from the piston 2 during the induction period, moves towards it during the latter part of the compression stroke, and follows it during the first part of the power stroke so that the highest point of compression is reached after the piston 2 has passed its top dead centre position and the ignition devices are protected from the effects of the combustion gases. Towards the end of the power stroke, a cam 14 on the crank-pin 9a operates a rod 16 to open a valve 18 in the head of the piston 4, thereby admitting a charge of fuel or scavenging-air to the cylinder from a compressor 24. The valve-guide is supported by inclined webs 19 adapted to create turbulence in the incoming charge. The valve may operate automatically, the cam-mechanism being dispensed with.
Patent GB-924151-A (GB)
Title: New pregnan-18-acid derivatives and pharmaceutical preparations containing them
IPC: C07J75/00
Filed: 1959-07-01
Abstract: The invention comprises compounds of the general formula:-<FORM:0924151/IV(a)/1> which may contain a double bond originating from C5 and in which R1 represents a free or ketalised oxo group and R2 and R3 each represents a free or esterified hydroxyl group.  Particular compounds are the 18--> 11 lactones of dl-D 5-3-ethylenedioxy-11b ,16a , 21-trihydroxy-20-oxo-pregnen-18-acid, of dl-D 4-3,20-dioxo-11b ,16a ,21-trihydroxy-pregnen-18-acid, and their 16a -, 21-, and 16a ,21-esters, especially the 21-monoacetates.  The compounds may be prepared by the introduction of a free or esterified hydroxyl group into a compound of the above general formula that is unsubstituted at either C16 or C21, e.g. by C16 hydroxylation with Streptomyces A7747, S. roseochromogenus, Didymella vodakii or Pestalotia funera, by cleavage of a 16a ,17a -epoxide (directly or via a 16a -hydroxy-20-arylhydrazone), by C21 hydroxylation with Ophiobolus herbotrichus, Sphaeroidaceae, Sclerotinia, Wojnowicia or Hendersonia organisms, or by chemical methods.  Ring A may be saturated by catalytic hydrogenation, and other conventional transformations effected.  The compounds are useful for the restoration of a disturbed sodium balance, e.g. in treatment of oedemae and circulatory disorders, and may be formulated in admixture or conjunction with conventional pharmaceutical carriers for enteral or parenteral administration, e.g. in the form of tablets, dragees, solutions, suspensions or emulsions.
Patent GB-1487659-A (GB)
Title: 2-phenyl-indole derivatives process for preparing the same and their use for stabilizing polymers of vinyl chloride
IPC: C07D209/14
Filed: 1975-05-23
Abstract: 1487659 Stabilizing polymers with phenyl indole derivatives LABAZ 23 May 1975 [18 June 1974] 22747/75 Heading C3P [Also in Division C2] Compounds of Formula I stabilize polymers or copolymers of vinyl chloride in the formula R represents a phenyl group, an amino group optionally substituted by acetyl or benzoyl, a mercapto group optionally substituted by C 1 -C 12  alkyl or cyclohexyl, a carboxy group, or a group R 1 O wherein R 1  is hydrogen, isopropyl, carboxymethyl, carbethoxymethyl, carbethoxyisopropyl, acetyl, docosanoyl, benzoyl, benzyl, allyl or C 6 -C 12  alkyl.
Patent GB-598159-A (GB)
Title: Improvements in electron discharge device circuits for generating or amplifying electrical oscillations
IPC: H03F3/52
Filed: 1945-09-04
Abstract: 598,159. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 4, 1945, No. 22801. Convention date, March 8' 1944. [Class 40 (v)] A valve generator or amplifier for ultra-highfrequencies comprises a tuned anode circuit for determining the operating frequency, a grid effectively earthed, and a cathode circuit impedance constructed to be a capacitative reactance at the operating frequency. The Figure shows a transmitting oscillator combined with a buffer amplifier and power amplifier. Each amplifier unit comprises regenerative pushpull amplifiers 5, 6, having anode Lecher systems L5 with sliders S adjusted by means of insulating screws to determine the operating frequency. Line L1 in the cathode circuit is capacitive over the entire frequency range, and serves as an inductive coupling to the previous stage. Slider S1 serves as a fine control of the degree of excitation and, in the case of the buffer amplifier, is adjusted to produce weak oscillations in the absence of driving excitation. A short metal strip 3 of low inductance connects the grids which may be fed with amplitude modulating voltages. The oscillator stage 1, 2 is similar to the amplifiers, but grid connector 3 has higher inductance, and if a line similar to L1 is utilized in the cathode circuit, slider S1 is adjusted to give a lower capacitive reactance over the operating range of frequencies.
Patent GB-608233-A (GB)
Title: Improvements in or relating to screw nuts
IPC: F16B39/32
Filed: 1945-09-06
Abstract: 608,233. Box spanners. CLARKE, J. N. Sept. 6, 1945, No. 22924. [Class 61 (iii)] [Also in Group XXV] - A box spanner 8 has a slot with an inclined side 12 to deflect the projecting end 7 of a locking spring contained in a nut to permit the nut to be unscrewed. Two slots may be provided with the inclined sides oppositely arranged to enable the one spanner to be used for both right- and lefthand nuts.
Patent GB-222518-A (GB)
Title: Improved tension roll bearings
IPC: D21F1/36
Filed: 1924-09-29
Abstract: 222,518. Warren, F. W. Sept. 27, 1923, [Convention date]. Guiding and stretching mechanism.-In the adjustment of tension rolls used with belts, webs, and the like, such as is necessary in connection with the forming wires, felts, and paper webs in paper making machines, the roll 18 is mounted in bearing blocks 36, 37, one of which, 37, is slidable in guides against the action of a spring 41 and carries a pointer 45 which, by movement over a suitable scale 46, indicates the tension of the forming wire or the like 10, and thus makes possible the maintenance of the correct tension by adjusting hand screws 32, 33, or the like to raise or lower the roll 18.
Patent GB-274307-A (GB)
Title: Improvements in or connected with instruments for plotting and the like particularly for use with range determining instruments of a self contained base type
IPC: G01B3/56
Filed: 1926-09-20
Abstract: 274,307. Barr & Stroud, Ltd., and French, J. W. Sept. 20, 1926. Bearings, indicating.- Relates to instruments for plotting &c. in connection with range finders of the self-contained base type, particularly of the kind in which light enters one end of the range finder at a constant angle, the rays entering the other end being deviated for the purpose of measuring distances. When such an instrument is rotated in azimuth about an axis through the centre of the base, the azimuth reading will represent the angular direction of the object with relation to the fixed-angle end of the base. In order to correct this reading so that it will give the angle in relation to the axis of rotation of the range finder, the plotting &c. instrument, according to the invention, comprises an arm A graduated in terms of ranges and rotatable about a fixed axis C. The graduated edge 2 passes through a point C<1> eccentric with regard to the axis C, the distance CC' representing, to the scale of the graduations on the arm A, the distance from the axis of rotation of the range finder to its fixed-angle end. The arm A carries a graduated arc B which is read against a fixed vernier D. The arm A may be graduated to different scales on its two edges 2, 3, Figs. 3 and 4, in which case it can be fixed with either edge operative by pins 5 passing through apertures in the arc B and in the arm. To adjust the distance CC<1> according to the scale in use, the apertures in the arm are in such positions that the one edge, when in use, projects further than the other, as shown.
Patent GB-1002739-A (GB)
Title: Improvements in and relating to end seals for heavy current cables
Inventor: KUSCHE KURT
IPC: H02G15/068
Filed: 1962-06-15
Abstract: 1,002,739. Cable terminations. NORDEUTSCHE KABELWERKE A.G. June 15, 1962, No. 23165/62. Heading H2E. A heavy current, high voltage cable, which has a metallic screen 4, is terminated by preforming a portion 1 of the termination with the larger end of a stress relief cone embedded therein, locating the preformed por tion on the cable so that permanent electrical connection is made between the metallic screen 4 and the smaller projecting end of the stress cone and moulding a resin 11 around that portion of the cable extending between the end of the sheath and the adjacent end of the preformed portion. The cable is first stripped of its insulation 5, screening 4 and sheath 3 at its end, and the preformed portion 1 is then fixed over the cable and adjusted until the cone 2 makes contact with the screening, which is then soldered to it. A mould is secured at the end of the preformed portion 1 around the end of the cable and a resin cast therein. The projective end of the stress cone 2 is perforated to enable the casting resin to penetrate in between the cable and the preformed portion, the outer surface of which is provided with fins 14, 15, 16 to increase the electrical leakage path.
Patent GB-615198-A (GB)
Title: Improvements in or relating to pumps
IPC: F04B43/12
Filed: 1946-08-06
Abstract: 615,198. Flexible tube pumps. MORGAN, L. A., and ELLIS, J. P., [Representatives of MORGAN, J. S.], and GAMMON, J. C. Aug. 6, 1946, No. 23250. [Class 110 (ii)] The pump comprises a pipe 11, at least part of which is resilient and deformable, which is pressed upon by means such as rollers 13 on a rotor 14 to force fluid along the pipe.
Patent GB-388076-A (GB)
Title: Improvements in and relating to machines for dividing dough and other plastic substances
IPC: A21C5/00
Filed: 1931-08-20
Abstract: 388,076. Dividing dough. ROBERTSON, E. F., 40, Clouston Street, Glasgow. Aug. 20, 1931, No. 23444. [Class 87 (ii).] Dough descending from a hopper 1 is sheeted between intergeared rolls 2, 3 (of which the roll 2 has flanges embracing the roll 3), and is divided by a knife 7 mounted in a block 8 which is resiliently carried by rods 6<11> driven by a crank 61 and constrained by trunnioned guide sleeves 9. The cutter is stated to move radially of the roller 2 and also in the same direction as the roller during cutting. The cut pieces of dough are removed by a corrugated roll 11. Scrapers 13 are fitted to remove dough from the roller 2. The roller 3 is adjustable by a hand-wheel 15 to vary the thickness of the dough sheet.
Patent GB-1112078-A (GB)
Title: Silica-alumina-magnesia-magnesium fluoride catalyst for use in cracking hydrocarbons
Inventor: BAKER RICHARD WILLIAM
IPC: B01J21/14
Filed: 1966-05-25
Abstract: Heavy petroleum fractions are contacted above 425 DEG  F. with a catalyst consisting of particles containing 0.5 to 57% Al2O3, 28.3 to 0.4% MgO, 14.0 to 0.1% MgF2 and the balance being essentially SiO2. Comparative examples describe the cracking of West Texas gas oil the physical and chemical properties of which are specified.  Tabulated details of products and properties are also given.ALSO:A cracking catalyst comprises 0.5 to 57% Al2O3, 28.3 to 0.4% MgO, 14.0 to 0.1% MgF2, the balance being SiO2, in microspheroidal form.  The catalyst may be made by blending conventional SiO2-Al2O3 and SiO2-MgO-MgF2 cracking catalysts appropriately.  The catalysts are described as being of a size useful in fluidised beds and data such as surface area, pore volume and bulk density are disclosed.
Patent GB-1421263-A (GB)
Title: Process for the production of aqueous urea/formaldehyde solution  of high formaldehyde concentration
IPC: C07C273/02
Filed: 1973-05-17
Abstract: 1421263 Formaldehyde BADISCHE ANILIN- & SODA-FABRIK AG 17 May 1973 [18 May 1972] 23479/73 Heading C2 An aqueous urea/formaldehyde solution havng a concentration of free and combined formaldehyde of more than 42% by weight is obtained by oxidative dehydrogenation of methanol with air in the presence of a silver catalyst followed by absorption of the formaldehyde formed in an aqueous solution of formaldehyde and urea and/or a urea/formaldehyde precondensate at a pH of less than 7, at least part of the solution obtained being treated with air which is then used for the dehydrogenation. In a preferred embodiment, the product stream is first passed through a plurality of absorbers containing urea-formaldehyde precondensates passing through the successive absorbers in the opposite sense to the product stream, and then through an absorber containing aqueous urea, the bottoms from which is mixed with some of the bottoms from the first absorber and mixed with acid to form the precondensates which are fed to the penultimate absorber. The air stream is passed through bottoms from the first absorber to concentrate the solution to give the required product.
Patent GB-936406-A (GB)
Title: Suspended ceiling
IPC: E04B9/22
Filed: 1960-07-06
Abstract: 936,406. Suspended ceilings. L. TIBBY. July 5, 1961 [July 6, 1960], No. 23560/60. Class 20 (4). A suspended ceiling comprises panels 10 having upstanding flanges 11, 12, Fig. 4, each folded adjacent its upper edge to present a hook 14 with a substantially semi-circular or semielliptical downwardly facing bight, the panels being suspended in edge-to-edge relationship by support means of a shape so as to present a complementally curved surface which locates into said hooks. The support means may comprise heating or cooling pipes 15 engaged within the hooks and supported in turn by stirrups 16. In the embodiment of Fig. 4 the hooks 14 on both sides of all of the panels are inwardly directed in relation to the panels and the support means comprises a pair of pipes 15 each individually engaging one hook 14, the pipes being supported by stirrups 16. In the embodiment of Fig. 1, each panel has one hook 14b directed inwardly in relation to the panel, and the hook 14a on the opposite side of the panel directed outwardly, whereby adjacent hooks 14a, 14b on adjacent panels may nest together, thereby requiring support means comprising only a single pipe 15. A similar result is obtained with the embodiment of Fig. 2 (not shown) in which alternate panels have respectively a pair of inwardly directed hooks and a pair of outwardly directed hooks. Stirrups may be formed with inverted U-shaped end pieces 32a, Fig. 6, for engagement with the hooks of the panels and their other ends may be formed to slidably engage over or within an overhead support member. At the edge of the ceiling, the panels 10 are supported on a horizontal web 26 of an angle strip 24 the other web 25 of which is secured to a wall not shown. The web 25 is folded to locate angle clips 29 which resiliently bear down upon the upper surfaces of the panel ends 28. Other heating elements and/or thermal and acoustic insulating material may be carried in the panels.
Patent GB-749264-A (GB)
Title: Improvements in means for extracting fluent waste or surplus matter from spraying and analogous booths
IPC: B05B15/80
Filed: 1953-08-26
Abstract: <PICT:0749264/III/1> Draught is induced through the open front 4 and an outlet duct 9 of an otherwise closed paint spray booth 1 by a compressed air jet issuing from the outlet 16a of a duct 16 passing up through the curved floor 8 of the booth and connected to the outlet of a motor driven blower 10 carried by brackets between legs 5.  The sides 3 of the booth are of wired glass.
Patent GB-1348225-A (GB)
Title: Pile carpet
IPC: D05C17/02
Filed: 1972-05-19
Abstract: 1348225 Pile fabrics FIBER INDUSTRIES INC 19 May 1972 [19 May 1971] 23614/72 Heading D1K A pile fabric has pile yarns with a pile height of from 3/8 inch to 3/4 inch to a weight of 25 to 50 ounces per square yard, the pile yarns comprising at least 80% by weight of polytetramethylene terephthalate having an intrinsic viscosity of from 0.75 to 0.90, as denier per filament of from 15 to 30 at least six crimps per crimped inch and at least 15 per cent crimp (as defined). The yarns may be singles with a cotton count from 0.5 to 2.0 or a two ply yarn.
Patent GB-1304285-A (GB)
IPC: G11C5/04
Filed: 1970-05-15
Abstract: 1304285 Magnetic storage apparatus RCA CORPORATION 15 May 1970 [16 May 1969] 23669/70 Heading H3B  In a magnetic core memory plane the magnetic ring cores are edge embedded in a resilient coating of cured resin on a sheet. The ring cores are first primed by subjection to silane vapour at an elevated temperature, Fig. 1 (not shown), and then loaded in a vacuum positioning jig with their edges exposed. A flexible sheet 26 coated with an uncured silicone rubber resin 28 is then pressed on to the exposed edges of the cores so that they become embedded in the resin 28 by an amount less than the radial distance between the inner and outer surfaces of the cores but more than a quarter of the radial distance, the coating 28 having a thickness greater than the depth to which the cores are embedded. The sheet 26 and adhered cores are then removed from the jig and the resin 28 cured. The cores may then be threaded and the sheet 26 may be adhered by adhesive 34 to a rigid support plate 30 provided with terminals 32 to which the 40 are connected.
Patent GB-845314-A (GB)
Title: Electrical contacts
IPC: H05K13/04
Filed: 1957-07-26
Abstract: 845,314. Switch contacts. COLE Ltd., E. K., and KING, A. E. Oct. 27, 1958 [July 26, 1957], No. 23685/57. Class 38 (5). [Also in Group XXII] Switch contacts have silver heads 2 and bifurcated shanks 3 of copper. The shanks are inserted into rectangular holes in an insulating support 5, e.g. a biscuit for use in a turret tuner, and the bifurcated end is twisted as at 4 to secure the contact in position.
Patent GB-317445-A (GB)
Title: Improvements in locking devices for the nuts of screwed bolts and the like
IPC: F16B21/14
Filed: 1929-08-02
Abstract: 317,445. Kerb-Konus Ges. Aug. 16, 1928, [Convention date]. Cotters.-Nuts are locked by slipping a collar 1 over the bolt 2 and inserting a cotter 5 through aligned holes in the collar and bolt. The cotter is formed with bifurcated end 6 which on engagement with a wedge-shaped projection 8 on the remote side of the collar is splayed to lock the cotter. Removal is effected by inserting a thin chisel through a slit 11 in the wedge, and gripping the neck 5<b>.
Patent GB-1201600-A (GB)
Title: Improvements in or relating to spray printing machines for color patterning a moving textile web
Inventor: GOLBS GUENTER
IPC: D06B11/00
Filed: 1969-05-09
Abstract: 1,201,600. Spray printing. TEXTILMASCHINENBAU ZITTAU VEB. 9 May, 1969, No. 23740/69. Heading B6C. A spray printing machine for the repetitive patterning of a moving textile web is provided with a control system arranged to ensure that the web is printed with a pattern that begins and ends with a complete design motif. As shown, a spray printing machine is provided with consecutive spraying heads 2 to 9 corresponding to the number of colours in the pattern, the heads being controlled by the respective template rollers 10 to 17 of a patterning device; first and second feelers 20, 22 are arranged upstream of the head 2, feeler 20 being close to the head 2 and feeler 22 being at a distance L, equivalent to the maximum possible repeat-length of the pattern, from the head 2. A conveyer 19 for transporting the web 1 through the machine is driven by a motor (not shown) through gearing 24 which is also coupled, by respective electromagnetic clutches 28, 29, 30 to the patterning device, to a rotary control switch 26 (Figs. 2 and 3, not shown), and to a measuring device 27 (Fig. 4, not shown) which is adjusted to take account of the actual repeat-length of the pattern being printed. The web is provided with a marker 22 on its leading edge and with a marker 23 on its trailing edge. In operation, the conveyer 19 is started up and the web 1 is moved into the machine; when feeler 20 detects marker 22 the clutches 28 and 30 are engaged causing the template rollers 10 to 17 to rotate whilst the spraying heads 2 to 9 are consecutively brought into operation by rotation of the control switch 26. With all the heads in operation a further switch 40a de-energizes clutch 28 and printing proceeds in the normal manner. When the feeler 21 detects the marker 23 clutch 29 is operated and the measuring device 27, with associated switches, is brought into operation whereby the switch 26 is again caused to rotate this time  deactivating the heads 2 to 9 in sequence and then stopping the patterning device, so that the pattern on the web ends with a complete design-motif.