baber/WOPTO huggingface dataset:
Patent GB-1001634-A (GB)
Title: Electronic circuit boards
IPC: H05K3/06
Filed: 1961-08-21
Abstract: 1,001,634. Printed circuits. AMPHENOLBORG ELECTRONICS CORPORATION. Aug. 21, 1961 [Sept. 19, 19 No. 30100/61. Heading H1R. In a printed circuit board, Fig. 10, a terminal 13 of relatively hard weldable metal is formed integrally with a conductor 10a which is of relatively ductile metal, e.g. Cu, Ag, a portion 10b of the conductor being bent outward from the board to form a projecting bracket spacing the terminal from the board. In Fig. 4, terminals 13, 14 of Ni or other hard metal are electroplated on to one surface of a thin Cu sheet 10, and are covered, together with surrounding areas of Cu sheet 10, with a release agent 15. A layer 18 of dielectric material is applied to the said surface of sheet 10 and adheres thereto except where the release agent 15 is interposed. The other surface of sheet 10 is etched through a positive resist to produce the desired conductor pattern. The terminals are lifted and the conductors bent where allowed by the release agent. A further dielectric layer 24, Fig. 10, may be added, and the exposed part of the circuit may be flashplated with Au or other metal. The board may be perforated adjacent the terminals to permit the passage of component leads.
Patent GB-1360006-A (GB)
Title: Process for producing 6-methylenetetracyclines and 6-deoxytetra cyclines
IPC: C07C233/00
Filed: 1971-06-28
Abstract: 1360006 6 - methylene and 6 - deoxy tetracyclines I VILLAX 28 June 1971 [3 July 1970 (3) 3 May 1971] 30120/71 Heading C2A In a process for dehalogenation or simultaneous dehalogenation and reduction at C6- of an 11a-chloro-6-doexy-6-demethyl-6-methyllenetetracycline, the 11a - chloro - derivative is dehalogenated at C11a by an equimolecular amount of hydrazine to yield the respective 6 - deoxy - 6 - demethyl - 6 - methylene - tetracyclines, or simultaneously dehalogenated at C11a and reduced at C6 by at least two equimolecular amounts of hydrazine to yield the respective 6 - deoxy - tetracyclines, in the presence of catalytic amounts of a noble metal catalyst such as palladium, platinum or rhodium in a reaction-inert medium, and the compounds thus formed are recovered subsequently from the reaction mixture. The 11a-chlorotetracyclines may be further substituted and suitable reaction-inert media are aliphatic alcohols and dialkyl formamides. If 5-hydroxy-tetracyclines are employed, it is preferable to use anhydrous conditions to avoid the formation of the degradation product 5-12a lactone. The starting tetracyclines may be in the form of free base, acid addition salts, e.g. hydrochloride, hydrofluoride, p-toluenesulphonate or N,N<SP>1</SP>- dibenzylethylene diamine or N,N<SP>1</SP> - dibenzylethylenediimine molecular complexes. The two last-mentioned complexes may be prepared by reacting 11a-chloro-6-deoxy-6-demethyl-6- methylenetetracyclines with N,N<SP>1</SP> - dibenzylethylenediamine or N - N<SP>1</SP> - dibenzylethylenediimine in a reaction inert medium at a pH adjusted to between 3À5 and 7À5 with ammonia; or the corresponding alkaline earth metal complexes may be prepared when the pH is adjusted with an alkaline earth metal hydroxide. The process for preparing 6-deoxy-tetracyclines is particularly suitable for obtaining predominantly the α-isomer.
Patent GB-1120746-A (GB)
Title: Improvements in writing, drawing or marking instruments
IPC: B43K8/02
Filed: 1965-07-05
Abstract: 1,120,746. Reservoir pens. W. RIGONI 5 July, 1966 [6 July, 1965; 23 July, 1965], No. 30166/66. Heading A4K. In order to limit the pressure, applicable during use, to a porous writing tip (3) of a reservoir pen, the tip is yieldably mounted to retract under axial pressure into a rigid guide tip 10, which then supports the pen on the writing surface. The tip (3) may be extended from the guide tip 10 by the weight of reservoir 40 alone or, additionally, by the pressure of a weak coil, rubber or foam rubber spring located (at 6) above the reservoir. Alternatively, a coil spring (14, Fig. 5, not shown) is located in a compensating member (12). The porous tip (3) may be secured in a sleeve 13 which may have a flange 16 or extend into the reservoir 40 (Fig. 7, not shown). The guide tip 10 may be formed integrally with the casing (Figs. 1-5, not shown) and may be spherical (Fig. 8, not shown). As shown, a separate guide tube 18 has an inturned rim to provide the guide tip 10.
Patent GB-696593-A (GB)
Title: An improved box or carton
Inventor: DAGNALL LESLIE RICHARD WILLIAM
IPC: B65D5/496
Filed: 1950-12-11
Abstract: 696,593. Cartons. CROOKES LABORATORIES, Ltd. Nov. 13, 1951 [Dec. 11, 19501, No. 30213/50. Class 18. The contents, such as ampoules, of a carton are contained in a member which raises them from a horizontal to a vertical position when the lid is pulled away from the body. The member 17 is connected to the lid 15 by a tongue 4 which, when pulled, hinges the member 17 about a flap 9. Elements 13 maintain the tongue against the bottom 11. The lid may hinge in the normal manner when the tongue 4 is in its innermost position. The carton with the exception of a partitioning strip 21, may be formed from a single blank.
Patent GB-698742-A (GB)
Title: Fire resistant cloth and a method and solution for producing the same
IPC: D06M11/47
Filed: 1950-12-11
Abstract: An aqueous solution for use in fireproofing cloth contains a titanium chloride acetate, formate, or propionate in which the titanium, chloride, and organic radicals are present in specified proportions. Titanium chloride acetate having the formula TiCl1,2Ac2,8 is made by adding an aqueous lead acetate solution to an aqueous solution of titanium tetrachloride sufficiently slowly to keep the temperature below 25 DEG  C. and then filtering to remove lead chloride.
Patent GB-533735-A (GB)
Title: Self-locking device for screw connections
IPC: F16B39/38
Filed: 1939-11-17
Abstract: 533,735. Locking nuts &c. FERRARIO, D. M. Nov. 17, 1939, No. 30299. Convention date, Nov. 28, 1938. [Class 89 (i)] Nuts are locked by a contained ring B keyed against relative rotation at d and having a thread discontinuous with that in the nut. The resultant axial movement on screwing up compresses an undulating or other resilient washer C. In a modification the ring and washer are fitted on the reduced end of the bolt. The projection d may be replaced by a spigot or pin or the exterior of the member B may be other than circular.
Patent GB-768029-A (GB)
Title: Improvements in or relating to regulated power supply equipment
Inventor: TERRY VICTOR JOHN
IPC: H04B3/44
Filed: 1953-11-03
Abstract: 768,029. Automatic current control systems. STANDARD TELEPHONES & CABLES Ltd. Oct. 29,1954 [Nov. 3, 1953], No. 30337/53. Class 38 (4). [Also in Group XL (a)] In an automatic control system for maintaining constant the current output of a D.C. generator (or, it is stated, the voltage of a generator, a rectifier, or a circuit supplied through a saturable reactor) in which the current (or voltage) is detected by a magnetically controlled thermionic diode, the diode has additionally a fixed counter-bias to increase the sensitivity. The generator G supplies a telegraph cable at c and (if desired) a parallel balancing load at d. There is an earth return both for the cable and the balancing load, the generator being earthed via a starting relay PC and alarm relays JC<SP>1</SP>, JC<SP>2</SP>, and their adjustable shunts. The current supplied to the cable passes through the control winding 1 of the magnetically-controlled diode V<SP>2</SP> in opposition to the current in bias winding 2, the resulting variations in space current varying the voltage across cathode resistor R<SP>5</SP>. The supply to diode V<SP>2</SP> and bias winding 2 is stabilized by a discharge tube V<SP>1</SP>. The control signal across resistor R<SP>5</SP> is passed by a phase-splitter V<SP>3</SP> to a push-pull pair of tetrodes V<SP>4</SP>, V<SP>5</SP> supplying opposing control fields GA<SP>1</SP> GA<SP>2</SP> on the generator G. These balance at normal load, the main excitation being supplied by a fixed field GF. Automatic switching is provided so that on .starting the valve heaters are first allowed to warm up, then the cable is first supplied at low voltage to warm up the heaters of the cable repeaters before going on to full power. Further relays actuate alarms and/or shut down the generator if the load current is above or below a predetermined value.
Patent GB-852333-A (GB)
Title: Improvements in safety earthing systems for electric appliances
IPC: H02H3/16
Filed: 1956-10-05
Abstract: 852,333. Protective arrangements. WEBBER, R. A. Oct. 23, 1957 [Oct. 3, 1956], No. 30392/56. Class 38 (5). An arrangement for continuously monitoring the earthing circuit of a portable electrical appliance, e.g. an electric hand tool, comprises an earth lead 8 connected between the frame of the appliance 1 and an earth terminal 13, and an indicator 9, a further earth lead 10 and an energizing winding 11 connected between the frame and the terminal, the energizing winding 11 being inductively coupled to a winding over which the appliance is supplied with electric power. The winding 11 may be tertiary winding of a supply transformer 3, 4 or it may be a winding inductively coupled with the field winding of the motor driving the tool. The indicator 9 may be a lamp positioned on the appliance or on the transformer and when lit indicates the continuity of the earthing circuit.
Patent GB-303932-A (GB)
Abstract: 303,932. I. G. Farbenindustrie Akt.- Ges., Bonrath, W., and Schepss, W. Oct. 17, 1927. Addition to 232,249. Fungicides; insecticides; vermin - destroying compositions; disinfectants.-Disinfectant, bactericidal, insecticidal, fungicidal, vermin destroying, and wood preserving preparations are obtained by mixing a dyestuff base with an arsenic or arsenious acid or a salt thereof. Salts of these basic dyestuffs such as the oxalate or zinc chloride double salts and the like are intimately mixed with the arsenical compound. In an example 40 parts by weight of the oxalic salt of malachite green are mixed with 20 parts of arsenic acid. Seed grain is then treated with an aqueous one-tenth per cent solution of this mixture for an hour. Reference is made in the Specification to the prior use of basic dyestuff, e.g. triphenylmethane dyestuffs, such as those of the malachite green series; oxazines, such as Meldola blue Nile blue and the like; thiazines, such as methylene blue; acridines, such as acridine yellow, benzoflairne and the like; azines such as safranine and basic azo-dyestuffs such as Bismarck brown, for combating fungi and bacteria and immunizing seed grain and reference is also made to the prior use of oxalates of the respective dye bases above mentioned for destroying vermin. Specifications 5265/78 and 232,249 are referred to.
Patent GB-992508-A (GB)
Title: Improvements in pneumatically or hydraulically operated ram and cylinder devices
Inventor: CARRIE JOHN
IPC: F15B15/24
Filed: 1962-08-09
Abstract: 992,508. Variable stroke rams. JAMES HOLT (ENGINEERS) Ltd. July 5, 1963 [Aug. 9, 1962], No. 30493/62. Heading F1P. [Also in Division B5] A control unit B for infinitely varying the stroke of a ram a of a hydraulic or pneumatic cylinder A comprises a body b mounted on one end of the cylinder A and having a bore b<SP>3</SP> in which a member b<SP>1</SP> is longitudinally adjustable to vary the stroke, and a combined inlet and outlet port d<SP>3</SP> communicating with the cylinder through a first passage comprising an arcuate chamber c and a concentric bore b<SP>5</SP> both in the member b<SP>1</SP>, and a second passage comprising a longitudinal bore b<SP>9</SP> in the body b provided with a throttle valve d<SP>4</SP>. A rod C screwed into the member b<SP>1</SP> is rotatable by means of a hand wheel C<SP>1</SP> to adjust the longitudinal position of the member b<SP>1</SP>, which is prevented from rotating by a pin d engaging a slot d<SP>1</SP> in the member b<SP>1</SP>. In operation a projection, not shown, on the ram a enters the central bore in the member b<SP>1</SP> near the end of the return stroke, thereby preventing further discharge of fluid to the port d<SP>3</SP> along the bore b<SP>5</SP> so that fluid discharges solely through the bore b<SP>6</SP> whereby the ram is cushioned.
Patent GB-687750-A (GB)
Title: Process for the demethylation of methoxy-derivatives of furo-4-5-6.7-chromones
IPC: C07D493/04
Filed: 1950-12-15
Abstract: The invention comprises furochromones of the formula <FORM:0687750/IV (b)/1> where R represents H or methoxy and their preparation by demethylating a compound of the formula <FORM:0687750/IV (b)/2> by warming with an aqueous hydrohalic acid suitably for one hour, whereby the methoxy group in the 5-position is replaced by an OH group, whereas any methoxy group present in the 8 position is unchanged.  In examples: (1) 2 - methyl - 5 - hydroxy - 41 : 51 - 6 : 7 - furochromone, and (2) 2-methyl-5-hydroxy-8-methoxy - 41 : 51 - 6 : 7 - furochromone, were prepared by warming the corresponding 5-methoxy compound with aqueous hydrochloric acid.  Hydrobromic and hydriodic acid may be used in place of hydrochloric acid.
Patent GB-618482-A (GB)
Title: Improvements in or relating to apparatus for testing ignition systems for internal combustion engines
IPC: F02P17/02
Filed: 1946-10-15
Abstract: 618,482. Testing ignition. NAPIER &SON, Ltd., D., and RAMSAY, F. R. F. Oct. 15, 1946, No. 30673. Drawings to Specification. [Class 7 (iv)] In an ignition system testing apparatus comprising an oscillograph, an input circuit for connecting the oscillograph to the low tension part of the ignition system (i.e. to the primary winding of a magneto or ignition coil) so as to receive impulses and give indications representing the impulses delivered to the sparking plugs, and means for synchronizing the time base of the oscillograph with the cycle of the engine so that figures representing the impulses for a series of sparking plugs are produced by the trace in sequence on the screen of a cathoderay tube or its equivalent, the input circuit includes an attenuator comprising a variable inductance by which the voltage of the impulses delivered to the sparking plugs can be progressively reduced so as to cause the plugs successively to fail to spark. The apparatus is similar to that described in Specification 563,502. A variable inductance is employed in place of the variable resistance which is connected in parallel with the primary of the ignition system and a rectifier is inserted in the lead to one of the vertical plates of the cathoderay oscillograph. It is stated that as an alternative a variable resistance and inductance may be combined and used in place of the variable resistance in order to gradually reduce the impulses supplied to the sparking plugs. Specification 606,739 also is referred to.
Patent GB-174724-A (GB)
Title: Improvements in nut locking devices
IPC: F16B39/282
Filed: 1920-10-30
Abstract: 174,724. Scott, A. A. Oct. 30, 1920. Locking nuts.-In a nut-lock for detachable vehicle wheels, &c. of the type comprising two members engaging each other by means of spring- pressed teeth, one member being prevented from turning by means of lateral arms, the spring is placed around the arms to afford a free space for other internal fittings. A castellated nut 3 is provided with toothed projections 5, which engage teeth f on a disc 4 which has ,arms h, k engaging slots a, b in a member 2. A helical spring 6 is provided to keep the disc up to its work, and the nut 3 is screwed up by a flat bar placed sideways between the castellations which presses the disc out of engagement and so enables the nut to turn.
Patent GB-359690-A (GB)
Title: Improvements in fuel cut-off valves
IPC: F23N5/24
Filed: 1930-10-14
Abstract: 359,690. Thermally-actuated valves. LOVEKIN, L. D., Montgomery Avenue, Villanova, and FISCHER, W. F., 501, Mt. Pleasant Avenue, Mount Airy Station, Philadelphia, both in Pennsylvania, U.S.A. Oct. 14, 1930, No. 30730. [Class 135.] A fuel cut-off valve for controlling the supply of gas to a water-heater or boiler, comprises a spring- influenced valve 22 and a lower cartridge 24, containing a fusible disc 16 normally supporting the valve stem 21, and adapted to retain the fusible disc when the latter melts to permit closure of the valve, the cartridge being in close thermal relation to the heater content and connected to the valve stem for removal and insertion therewith when the fusible disc is required to be replaced. The valve body 11 is mounted on a tee-member 12 connected with the cold water supply and mounted on the top or side of the heater. The disc 16 is fused by the overheated water expanding into the supply pipe, and by heat conduction up the supply pipe attached to the beiler. The cartridge 24 is contained loosely in a lower well of the valve body 11 which may be wholly within the water supply member 12, as shown, or which may be outside the member and have a solid heat-conducting end projecting to a greater or less extent into it. The valve comprises a body 11 having a gas inlet 19 and a seat 17, a leather closure element 22 fixed on the stem 21 together with a skirt 23 slidable in a removable cap 32 and pressed downwards by a spring 30. The lower end of the stem 21 projects into the cartridge 24 which has an inner shoulder supporting the fusible disc 16 and has screwed to it a bushing 26 loose on the stem. The connection between the stem and the cartridge is by a pin 27 which permits longitudinal movement of the stem. The lower well of the valve body 11 has a loose cover 36 which insulates the cartridge by a dead air space and prevents tar &c. from dropping thereon. The upper end of the stem 21 has a shallow groove to facilitate removal.
Patent GB-626331-A (GB)
Title: Improvements in or relating to apparatus comprising a current converting tube
IPC: H01J17/54
Filed: 1946-10-16
Abstract: 626,331. Converting. PHILIPS LAMPS, Ltd. Oct. 16, 1946, No. 30832. Convention date, Jan. 30, 1943. [Class 38 (ii)] [Also in Group XL (a)] The cathode screen of a gas and/or vapourfilled converting valve is connected to a tapping on a potentiometer connected between the cathode and an anode. An argon and mercury vapour-filled glass valve 1 of the kind described in Specification 623,012, [Group XL (a)], has two anodes 3 surrounded by gauze screens 8 and separated by screen 12, and a cathode 2 with a screen comprising a cylinder 13 and a cover 14 for preventing the passage of cathode particles to the anode. So that the anode voltage at initiation of discharge may not vary, the cathode screen, to which the arc is first struck from the cathode, is given a voltage intermediate between those of anode and cathode by connecting it to the junction of resistances 21, 22 connected between anode and cathode. These resistances may be mounted on cooling fin 20 on hood 17 in which mercury 18 is kept substantially at air temperature. The cylindrical part of the screen may be divided into as many mutually insulated parts as there are anodes, and each connected to a tapping on a potentiometer connected between the cathode and the respective anode, Figs. 2a-2c (not shown).
Patent GB-333796-A (GB)
Title: Improvements in loud speakers
IPC: H04R7/00
Filed: 1929-10-11
Abstract: 333,796. Jouffray, J. F. Oct. 12, 1928, [Convention date]. Loud-speakers ; magnetic - instruments.-A loud-speaker comprises an electromagnetic driving unit 1, a rod 3 actuated thereby, a rigid support 2 on which the driving unit 1 is mounted and a second rigid member 5 rigidly fixed to the support 2, the driving rod 3 being attached to the member 5. The driving rod 3 is unable to perform longitudinal vibrations and vibrates transversely. The rigid member 5 may be the sounding board of a piano.
Patent GB-1065521-A (GB)
Title: Overbed table
Inventor: CARROLL JOSEPH ROY
IPC: A47B23/04
Filed: 1963-08-07
Abstract: 1,065,521. Bed tables. CALTHENA Ltd. Nov. 3, 1964 [Aug. 7, 1963], No. 31094/63. Heading A4H. A bed table which is supported by two telescopic legs 17, has a central section 30 of the table top pivotally mounted to form an inclined book rest with its front edge abutting a front frame member 11. A rear frame member 12 is discontinuous to provide a free space beneath the bookrest. the bookrest 30 is supported in its inclined position by links 33. The mechanism for raising and lowering the table comprises screw jacks 27 disposed in the telescopic legs 17 and rotated through bevel gears 25, 26 by a drive spindle 23 disposed in a longitudinal frame member 14.
Patent GB-663566-A (GB)
Title: Improvements in or relating to the production of organic carboxylic esters of polyhydric alcohols
IPC: C07C69/33
Filed: 1948-12-01
Abstract: Polyhydric alcohol esters of carboxylic acids are made by heating an agitated suspension of freshly heat-activated aluminium oxide in a liquid or molten mixture of the polyhydric alcohol and carboxylic acid to such a temperature that water appears as a reaction product, distilling off said water as the reaction proceeds until the reaction is complete, and thereafter separating the resulting ester in a liquid condition from the spent aluminium oxide and thermally reactivating the latter for re-use in the process.  Alcohols specified are pentaerythritol, polypentaerythritols, mannitol, sorbitol, ethylene glycol and glycerol.  Monoor poly-carboxylic acids may be used and the invention has particular reference to esters which can be distilled without decomposition only under high vacua or not at all, e.g. esters with monobasic aliphatic or cyclo-aliphatic saturated or unsaturated acids having more than 10 C atoms, such as fatty acids or esters with phthalic or maleic acid.  The catalyst is obtained by heating aluminium hydroxide gel to red heat in an inert atmosphere and is reactivated at 900 DEG  C., also in an inert atmosphere.  Advantageously the catalyst is used in quantities of 1-5 per cent by weight of reactants.  The catalyst may be recovered while the reaction residue is still molten or by solvent extraction of the ester.  Solvents specified are chloroform, benzene, alcohol, ligroin or mixtures thereof.  In examples, in which the above catalyst is used, (1) stearic acid and glycerol are reacted at 260-280 DEG  C., water formed being continuously removed and glyceryl tristearate separated from spent catalyst in the molten state; (2) stearic acid (1 1/2 mols.) and pentaerythritol ( 1/2 mol.) are reacted as in (1), cooled to 150 DEG  C. and adipic acid ( 1/4 mol.) added and reaction completed at 260-280 DEG  C. to yield bis - tristearoyl - pentaerythrityl adipate; (3) pentaerythritol and glacial acetic acid are reacted at 98-106 DEG  C. to yield pentaerythrityl tetra-acetate; and in (4) pentaerythritol (2 mols.), stearic acid (6 mols.) and adipic acid (1 mol.) are heated at 260-280 DEG  C. in CO2 to yield bis-tristearoyl-pentaerythrityl adipate.
Patent GB-1499225-A (GB)
Title: Shredded food article and its production
IPC: A21D13/08
Filed: 1976-07-27
Abstract: 1499225 Making shredded food articles KELLOGG CO 27 July 1976 [28 July 1975] 31186/76 Heading B5A [Also in Division A2] A shredded food article is made by applying a shredded web zig-zag fashion to a moving support and subdividing the web thus formed into a plurality of articles. Two or more shredded webs may be applied serially to the support, a filling material being interposed between the webs. In the preferred embodiment, a first shredded web 18a is formed by one or more shredding mills 10a and applied zig-zag fashion to a moving belt 28 by a pair of conveyers 20a, 22a reciprocated across the belt by a cylinder 30a. Streams of fillings are applied to the web thus formed by discharge tubes 72 and a second shredded web 18 is applied in the same fashion to form a composite web. The composite web is slit longitudinally by an array of rotating cutting discs 44 pivotally carried from a shaft 50, the selvedge is removed by arms 54, and the longitudinally slit and trimmed web thus formed is transversely slit into individual articles by discs 60 mounted upon a chain 68 extending obliquely across the web. A composite web of uniform thickness is formed on the belt if there is an even number of laps per width of shredded web.