baber/WOPTO huggingface dataset:
Patent GB-701531-A (GB)
Title: 6-halo-8-hydroxycinchoninic acids and the process of preparing the same
IPC: C07D215/50
Filed: 1951-04-12
Abstract: 6-Halo-8-hydroxycinchoninic acids are obtainable from the corresponding dihalo-compounds by selective hydrolysis of the 8-halo-atom with an alkali hydroxide or carbonate or alkaline earth hydroxide in a proportion of 3:1, at 145 DEG -175 DEG C. in presence of a copper catalyst, followed by acidifying.  The dihalo-cinchoninic acid may be prepared by condensation of a 5:7 dihaloisatin with a -ketomethylene compounds and hydrolysed in situ to the 6-halo-8 hydroxycinchoninic acid, or may be isolated, by the use of the above proportions of reagents.  Examples describe the isolation of 2-phenyl-, 2-propyl, and 2-methyl-6-chloro-8-bromo-cinchoninic acids from the corresponding dihaloisatins with acetophenone, methyl, propylketone, and acetone, other keto-methylene compounds specified including ethylmethyl ketone, 2-acetonaphthone, cyclohexanone, and 2-acetothienone; and the hydrolysis to the corresponding 6 - chloro - 8 - hydroxy - compounds.  In addition the hydrolysis of 1:2:3:4-tetrahydro-5 - bromo - 7 - chloro - 9 - carboxy - acridine is described, and the condensation of the dihalo-isatins to cinchoninic acids followed by hydrolysis of one halo-atom, in a one-stage process, for the above-mentioned products.  Other cinchoninic acids specified may have the 2- and 3-positions occupied by allyl, alkyl, aryl or heterocyclic groups, or joined by carbocyclic rings, and the groups specified may be substituted in general by alkali-insensitive groups including alkyl, aryl and others.  Additional a -ketomethylene compounds from which the halo-cinchoninic acids can be prepared include isopropyl methyl ketone, allyl acetone, cyclopentanone, cyclohexanone, 2:3:3-trimethyl-cyclopentanone benzylphenylketone, 1-keto-1:2:3:4-tetrahydrophenanthrene, benzylmethylketone, 2:5-diacetothienone, a -furylmethylketone, and a -pyrryl-ethylketone. Specification 489,458 is referred to.
Patent GB-824613-A (GB)
Title: A process for the manufacture of a liquid silver-containing preparation
IPC: C07F1/00
Filed: 1958-03-18
Abstract: A solution of the silver salts of di- and tetrahydroabietic acid is prepared by the reaction of a silver compound with hydrogenated colophony at a temperature of 80 DEG  to 180 DEG  C. in the presence of a terpene or a terpene-containing solvent.  0.3 to 0.6 parts by weight of silver carbonate may be reacted with 1 part by weight of hydrogenated colophony using alpha-pinene as a solvent to give a solution containing the silver salts dissolved in alpha-pinene or the decomposition products thereof, and unreacted hydrogenated colophony.ALSO:Finely divided metallic silver is prepared by the reaction of a silver compound with hydrogenated colophny (a mixture of di and tetra hydroabietic acids) at a temperature of 80 to 180 DEG C. in the presence of a terpene or a terpene-containing solvent. 3.5 to 2 parts by weight of silver carbonate, which is the preferred silver compound, may be reacted with 1 part by weight of hydrogenated colophny using alpha-pinene as a solvent.  The finely divided metallic silver so obtained is used as a component of a liquid or pasty mixture for silvering solid bodies by mixing with a known flux, e.g. lead borate, a known solvent, e.g. a high boiling ketone and optionally 0.2% to 1.2% by weight of hydrogenated castor oil.  U.S.A. Specification 2,130,997 is referred to.
Patent GB-565944-A (GB)
Title: Improvements in or relating to safety guards for presses
IPC: F16P3/04
Filed: 1943-06-01
Abstract: 565,944. Machinery guards. MILLING- TON, H. June 1, 1943, No. 8718. [Class 80 (iv)] A guard, particularly for hand presses, comprises an arm 1, 5, 6 mounted to oscillate on the ram 14. The rod 1 is cranked at 1a and is secured to a boss adapted to rotate with a gear-wheel 2 which meshes with a rack 3 fixed to the press frame. The rod 1 is also secured to a coupling member 4 which carries two adjustable rods 5, 6. A pusher arm 7 is pivoted to the rod 5 and is urged by a spring 9 against a head at the lower end of rod 6 which passes through a slot in the arm 7. An inwardly directed finger 10 is secured to the arm 7 and is arranged to pass over the die 11. The finger may be of resilient material and has a projection 10a which, on a return stroke, removes the work-piece. In a modification, the rod 1 is fixed to a lever pivoted on the ram and adapted to move over an abutment on the press frame.
Patent GB-731206-A (GB)
Title: A process for preparing surface-active sulphuric acid ester salt mixtures
IPC: C07C303/24
Filed: 1953-03-30
Abstract: Sulphuric acid alkyl ester salts containing at least 50 per cent of 2-sulphates are produced by sulphation of mixtures of alkenes containing 8 to 18 carbon atoms in the molecule obtained by the vapour phase cracking of substantially oil free paraffin waxes having a molecular weight below 375, wherein the alkene mixture contains at least 65 per cent by weight of alpha alkenes with the weight ratio of alpha alkenes to other alkenes greater than 4 and is sulphated with 90-100 per cent sulphuric acid in a mole ratio of acid to alkene mixture between 0.15 to 1.5, for a period of 2 to 15 minutes and at a temperature between 0 DEG  and 25 DEG  C., and the resulting alkyl sulphuric acids are subsequently neutralized.  Preferably the weight ratio of alpha alkenes to other alkenes is at least 7 and the temperature is between 5 DEG  and 15 DEG  C.  The cracked distillate may be pretreated to remove alkadienes, e.g. with sulphuric acid or aluminium chloride.  The overall yield of ester salts may be increased by extracting the above product with a low boiling hydrocarbon such as gasoline in the presence of a water-soluble alcohol, removing the polymerization products from the extract and sulphating the extract with sulphuric acid of higher concentration than that used in the first stage.  A suitable reactor consists of two concentric nests of small bore tubes, cooled by liquid ammonia or liquid propane, through which the reaction mixture is recycled by a pump. The reactants may be added continuously to the circulating reaction mixture and a corresponding part of the latter continuously withdrawn.  Examples of the process are given.
Patent GB-181148-A (GB)
Title: Improvements in and relating to singeing apparatus for fabrics
IPC: D06C9/00
Filed: 1921-03-22
Abstract: 181,148. Wilson, J. W., and Davies, H. March 22, 1921. Singeing.-A fabricsingeing apparatus comprises a shallow channel A of firebrick or other refractory material containing granular refractory material R, within which a combustible mixture will burn substantially without flame, and a heavy metal, preferably copper, bar C, forming the roof of the channel and over which the fabric is passed. A series of valve-controlled gas or vapour and air pipes D<2>, D', are connected through pipes B<1> to pipes B secured in openings C' in the base, or side, of the channel A. A number of removable plugs P are provided opposite the openings C<1> for lighting purposes, and a flue F for the escape of combustion products. Dimensions of the bar, channel and refractory material are given.
Patent GB-1537324-A (GB)
Title: Process for producing blow moulded thermoplastic articles
IPC: B29C49/46
Filed: 1976-03-04
Abstract: 1537324 Reducing permeability of blow mouldings AIR PRODUCTS & CHEMICALS Inc 4 March 1976 [6 June 1975] 8773/76 Heading B5A A blow moulded thermoplastics bottle is produced with decreased permeability to atmospheric gases into and liquid or gases from the bottle, by at least partly effecting the blow moulding by a material reacting with the thermoplastics and comprising a mixture 86 to 0À1% by weight of a silicon compound, and 14 to 99À9% by weight of air or an inert gas, e.g. nitrogen, argon, or helium, the mixture being substantially free of water vapour or other compound containing a reactive hydrogen ion. The bottle is purged with an inert gas while in the mould, or subsequently, to remove the silicon compound. In the examples; (1), an extruded parison of 0À92 gm/c.c. density polyethylene is blow moulded with a mixture of 15% trichloromethylsilane and 85% nitrogen, to produce a bottle comprising an improved barrier to non- polar solvents; (2), the same material is initially expanded in the mould to half the volume of the bottle by substituting chlorotrimethylsilane in the mixture of Example (1), with nitrogen then being introduced to complete the blowing. Various other thermoplastics and reactive silicon compounds are also specified.
Patent GB-1113297-A (GB)
Title: Improvement in power driven rotary tools
Inventor: MITCHELL WALTER GEORGE
IPC: B25D16/00
Filed: 1966-03-01
Abstract: 1,113,297. Drilling machine details. ROCKWELL MANUFACTURING CO. 1 March, 1966, No. 8817/66. Heading B3C. [Also in Division B4] A rotary-percussive tool comprises a motor 22 adapted to rotate an anvil 28 in which a tool bit is axially displaceable and to impart axial impacts to the tool bit, the tool being provided with a hammer member 96 adapted to impart rotational impacts to the anvil when the torque-resisting rotation of the tool bit exceeds a predetermined amount. The anvil is rotated via lugs 130, Fig. 9, thereon being engaged by lugs 128, Fig. 8, formed on the hammer member 96 which is rotated via a ball-and-cam connection 98 between the hammer and a member 102 secured to a cylinder 88; the cylinder is rotated via gears 82, 78 by the motor 22. In the event of the tool bit becoming jammed the hammer is raised by means of the ball-and-cam connection thereby causing the driving lugs 128, 130 to be disengaged. Due to the shape of the cams, the lugs 128 of the hammer re-engage those on the anvil with a sharp impact thereby loosening the tool bit. The tool bit is given axial impacts by means of a striker 186 reciprocated in the cylinder by means of a piston 182 which is reciprocated by a crank 164 rotated by the motor; the striker is given rapid movements by means of an air pressure developed between the head of the piston and the striking end 198 of the striker. In order to prevent the piston from abutting the end 198 in the event of loss of air pressure a resilient ring 203 located in the striker is arranged to engage in a groove 205 formed in the piston. The tool may be used for hammering action only, hammer and rotary action, or rotary action only, this being effected by the use of different shaped shanks on the tool bits.
Patent GB-478162-A (GB)
Title: Improvements in or relating to methods of and apparatus for coiling slivers of cotton or other fibres into cans
IPC: B65H54/80
Filed: 1937-03-25
Abstract: 478,162. Coiling slivers. CASABLANCAS, F. March 25, 1937, No. 8868. [Class 120 (iii)] In apparatus for coiling slivers, the slivers are delivered through devices 6, 7, Fig. 1, into a can 1 supported on a plate 2 the feed devices or the member 2 being moved round a substantially circular path without giving an axial rotation thereto so that the sliver is coiled without permanent twist. Both the support 2 and the devices 6, 7 may be so moved without giving an axial rotation either to the support or to the feed devices while a number of slivers may be coiled in a single can. A suitable mechanism for moving the support 2 and /or the coiler 3 consists of a lever 8, Fig. 2, actuated by a crank 10, to the end of which the support plate 2 is secured, the lever 8 being slotted at 11 and guided by a stud 12 and the plate 2 tracing out the path 15. In a modification, the plate 2 is caused to follow a truly circular path 19, Fig. 3, by guiding the pin 17 in a cam groove 18 of the same shape as the path 15.
Patent GB-712241-A (GB)
Title: Improvements relating to sound transducing devices
Inventor: ELLIOTT LLEWELLYN JOHN
IPC: H04R17/04
Filed: 1951-04-17
Abstract: 712,241. Gramophone pick-ups. ELECTRIC & MUSICAL INDUSTRIES, Ltd. April 17, 1952 [April 17, 1951], No. 8886/51. Class 40 (4) [Also in Group XXXVIII] In an electrical pick-up, a detachable stylus assembly comprises a resilient arm which engages a slot formed in a piezo-electric crystal holder, the resilient arm and the slot being shaped so that when the arm is inserted its curvature is changed and frictional retaining forces are set up. As shown in Fig. 5c, the stylus assembly comprises a curved resilient blade-like arm 24 and a metal arm 22 carrying a sapphire stylus 20 which are joined by a common support 23. The crystal holder, Fig. 5b, consists of a crystal clip 11 integral with a metal shaft 12 which is fitted with a sleeve 14 and has a slot 13 for reception of the resilient arm 24. The holder is embedded in a resilient bearing bush 15 formed of rubber or a mixture of ethyl cellulose and castor oil. A piezo-electric crystal 10 fitted at each end with a holder and a co-operating detachable stylus assembly is located in a pick-up head comprising a two-part casing 30, 31, Fig. 3, which is detachably connected to a rotatable member 41 on a pick-up arm 40 by pins and sockets 44, 36. Electrical continuity is effected between a fixed contact 45 and a spring contact 34 located in a central aperture 33 in the head, and also through the pins and sockets. Either stylus may be moved to the playing position by rotation of member 41, the movement being restricted to an arc of 180 degress by a screw 43 and a co-operating circumferential slot (not shown). A dowel, Fig. 4 (not shown), and a corresponding groove 50 prevent incorrect fitting of the head to the member 41. A pair of bifurcated guard arms 46, 46<SP>1</SP>,Fig. 2, form part of member 41 and straddle the stylus arms which may yield under excess pressure and retract the stylus. A further guard for the upper stylus comprises a hood 471 which is integral with a forked saddle 50 pivotally mounted on the pick-up arm. In the lowered position, Fig. 1 (not shown), the hood shrouds the upper stylus while the forked saddle arms engage the side walls of member 41 and prevent rotation of the head. Specification 704,750 is referred to.
Patent GB-413441-A (GB)
Title: An appliance for holding and facilitating the slicing of meat and other foodstuffs
IPC: A47J47/00
Filed: 1933-03-24
Abstract: 413,441. Cutting slices in succession. CALDWELL, W. J., Rome Hall, Brierfield, Lancashire. March 24, 1933, No. 8911. [Class 28 (ii).] In a slicing-apparatus of the kind wherein the substance is moved along a tubular container by a pusher actuated by a screw, the delivery end of the container is made smaller than the other end to grip the substance tightly at the point where it is sliced, and the delivery end of the container is inclined so that the substance can be sliced to the end by inserting a fresh piece of substance between the short piece of substance and the pusher. As shown, the container A is removably screwed to a base G in which the feed screw C is mounted, the feed nut b having an arm b which works in a slot a<2> and fits into a socket b<2> on the pusher B. The delivery end of the container is normally closed by a glazed cover D, and the other end is closed by a cover plate E which is pressed against the end of the container by a screw f threaded in a cross bar F. The bar F is locked in position by a turning movement which engages it with a portion g<x> of the base and with a slotted lug a<1> on the container. The cover E carries spikes H which pass through registering holes in the pusher B and extend substantially to the cutting plane. The substance is inserted by disengaging the cross-bar F and withdrawing the cover E. The plate B is then withdrawn from the container and swung about the feed screw thus permitting the plate B to be slid off the arm b<1>. The feed is effected by hand-members c, c<1>, and a screwed handle c<3> may be attached for rapid retraction of the pusher. A spring pressed member b' acts as a stop for indicating that the pusher B is nearing the end of its feed movement. The stop may be manually withdrawn to allow the pusher to travel until the arm b<1> contacts with the end of the slot a<2>. Lugs e<1> on the cover E and lugs g<3> act as feet when the device is used in the vertical position. The container may be of circular or other section and may be made of a stainless material.
Patent GB-385587-A (GB)
Title: Improvements in the production of oval metal bowls
IPC: B23K1/14
Filed: 1931-03-24
Abstract: 385,587. Metal bowls. SORENSEN, C. C., 19, Nordre Frihavnsgade, Copenhagen. March 24, 1931, No. 8976. Convention date, May 12, 1930. Void [Published under Sect. 91 of the Acts]. [Class 66.] Sheet-metal bowls, such as fruit bowls of a substantially oval form, are formed from two equal members forming part of a hollow body of revolution, which are fastened along their edges. A semiellipsoid of revolution which may be produced by spinning is divided along the axis X-X, Fig. 1, the two halves A then being soldered along the semicircular edges B. In a modification, two equal semi-ellipsoids of revolution C, C, Fig. 4, are cut along a plane E parallel to the major axes the portions Y being removed and the remainder soldered along the circular edges D to form the bowl. A modified form is similarly formed from bodies F, Fig. 6. The finished bowl may be subjected to polishing and hammer-beating to render the soldering invisible.
Patent GB-250269-A (GB)
Title: Improvements in peeling and cutting machines for vegetables
IPC: A23N7/02
Filed: 1926-04-06
Abstract: 250,269. Benninger, M. April 6, 1925, [Convention date]. Peeling fruit and vegetables: graters; cutting and slicing vegetables &c.-Relates to a machine for peeling and cutting fruit and vegetables in which the vegetables &c. are peeled by being held against a rotary brush 9 positioned in a chamber 2, and are cut, scraped, or rasped in a compartment 12 in which an interchangeable cutting or scraping drum 14 is arranged to rotate. The vegetables &c. may be " parted " by forcing them into the chamber 12 through severing-members 17 by a sliding pressure head 18 which may be operated by levers. The brush 9 and drum 14 may be driven by a water turbine 4 and injector 6, or other driving-means may be provided in which case an independent supply of washing. water is supplied to the chamber 2. The severing-members 17 may be dispensed with and the head 18 may be formed, or provided with an attachment, to extend into the chamber 12.
Patent GB-810120-A (GB)
Title: Box
IPC: B65D43/10
Filed: 1955-03-28
Abstract: 810,120. Boxes. BERGERIOUX, R. C. M. March 28, 1955 [March 27, 1954], No. 9036/55. Class 18. One side at least of a box is extended below the base to form a rim which is releasably engaged by an inturned flange of an elastically deformable cover. The box may have rims extending below opposite sides for engagement by inturned portions 14, 15 of the cover. The rims may be omitted from the box ends enabling the cover to slide as well as being removably by deformation. The cover may have flanges on all four sides or may be hinged to the body and have only one flange.
Patent GB-669575-A (GB)
Title: Separation of stereoisomers of 1-(p-hydroxyphenyl)-2-(alpha-methyl-gamma-phenyl-propylamino)-propanol-(1)
Filed: 1949-04-04
Abstract: Stereoisomers of 1-(p-hydroxyphenyl)-2-(a -methyl - g  - phenyl - propylamino) - propanol - 1 of melting points 111-112 DEG  C. ("Base Ia") and 139-140 DEG  C. ("Isobase Ib") are separated from mixtures thereof by fractional crystallization of the free bases (which may be liberated from their salts in situ) from aliphatic alcohols containing not more than 6 carbon atoms in the molecule, or by fractional crystallization of salts of the bases with fatty acids containing 2-4 carbon atoms in the molecule.  The fractional crystallization of the free bases is preferably effected from methanol, in which case Base Ia separates first, after which Isobase Ib may be isolated from the mother liquor by prolonged standing in the cold (if necessary after further concentration) or by converting it to a salt, preferably the hydrochloride.  When the initial mixture is in the form of salts of the bases (e.g. their hydrochlorides obtainable by hydrogenation of 1-(p-hydroxyphenyl)-2-aminopropanol-1 in the presence of benzylacetone, acidification with hydrochloric acid, evaporation and heating with acetone), separation may be effected by suspending the salts in methanol, adding an equimolecular quantity of methanolic alkali (e.g. sodium methylate, methanolic caustic soda or preferably methanolic caustic potash), filtering off the Base Ia which crystallizes out together with the alkali metal salt of the acid (which is then removed by washing with water), and recovering Isobase Ib as before.  Alternatively, if the proportion of Isobase Ib hydrochloride exceeds about 60 per cent, the hydrochloride of Base Ia (with a minor proportion of its isomer) may be dis solved out by heating with a little aqueous methanol (or ethanol) or water, the resulting solution being treated as before and the residue of Isobase Ib hydrochloride being purified by further recrystallization or by way of the free base.  The fractional crystallization of the fatty acid salts of the bases is preferably effected from diluted aqueous solutions of the fatty acids, though other solvents (e.g. methanol) may also be used.  Examples illustrate the various embodiments of the invention.  Specification 669,574 is referred to.
Patent GB-1175488-A (GB)
Title: New Basic-Maleamic Compounds, their production and use and Imides and Polyimides prepared therefrom
IPC: C07D207/452
Filed: 1968-02-26
Abstract: 1,175,488. Bis-maleamides and maleimides. SOC. RHODIACETA. 26 Feb., 1968 [28 Feb., 1967], No. 9169/68. Heading C2C. [Also in Division C3] The invention relates to bis-maleamides of the general formula in which R is a hydrogen atom or an alkyl, cycloalkyl or aryl radical, R<SP>1</SP> is an alkyl, cycloalkyl or aryl radical, or R and R<SP>1</SP> together form an alkylene radical, and R<SP>11</SP> is a hydrogen atom or alkyl radical containing 1-4 C atoms. The invention also relates to bis-maleimides of the general formula The maleamides may be produced by reacting maleic anhydride and a diamine of the formula NH 2 -X-NH 2  in which X represents The bis-maleimides may be produced by dehydrating the maleamide by heating to a temperature between 40 and 60 C. with acetic anhydride in the presence of sodium acetate preferably in a liquid medium such as dimethyl formamide. Several examples are given.
Patent GB-751999-A (GB)
Title: Slewing loaders
IPC: A01D87/00
Filed: 1954-03-29
Abstract: 751,999. Shovelling machines. PROTTER, S. Dec. 29, 1954 [March 29, 19541, No. 9184/54. Class 68(1) [Also in Group XXX] A shovelling machine comprises a U- shaped frame 1; a ram 20 which, together with lift links 19, luffs the frame about pivots 2; a cradle 5 pivoted to frame 1 by a bearing 3 and' supporting a telescopic member 7, 8 which is adapted to be extended by a ram 12; a bucket or load handling fork (see Group XXX) secured to the member 7, 8 and a rod 16 pivoted to the frame 1 and to the outer portion of member 7; 8; the arrangement being such that the rod 16 causes the cradle 5 and its associated parts to swing about the axis of bearing 3 when ram 12 is extended. The axis of rotation of bearing 3 is variable in relation to the lengthwise axis of frame 1.
Patent GB-1209586-A (GB)
Title: Improvements to telealarm networks
IPC: G08B23/00
Filed: 1969-02-20
Abstract: 1,209,586. Alarm systems. GROUPEMENT ATOMIQUE ALSACIENNE ATLANTIQUE. 20 Feb., 1969 [20 Feb.. 1968], No. 9275/69. Addition to 1,120,455. Heading G4H. The normal holding current of the alarm system claimed in the parent Specification is reduced by a bridge circuit having one of its arms connected to a satellite station 1-3, 5, 6, a comparator 11 providing an amplified unbalance signal to the central station when the holding current changes from its normal value in response to operation of switch 1. Comparator 11 may be an operational difference amplifier, one input of which is earthed through an overload protection and filter circuit 14. Separate threshold detectors may be connected to line 22 to detect different line conditions.