baber/WOPTO huggingface dataset:
Patent GB-1014343-A (GB)
Title: Preparing organic carbonates
IPC: A61K31/135
Filed: 1962-06-08
Abstract: 2-Hydroxyalkyl thiolcarbonate esters are prepared by reacting an alkyl, substituted alkyl (including aralkyl), aryl or substituted aryl chloroformate with an alkali or alkaline-earth metal mercaptide salt of a mercaptoalkanol (advantageously prepared in situ by reacting the chloroformate with the mercaptoalkanol in the presence of an alkali or alkaline-earth metal base); and 2-mercaptoalkyl carbonate esters are prepared by reacting the aforesaid chloroformate with a mercaptoalkanol in a reaction medium at a pH below 6, or by isomerizating a 2-hydroxyalkyl thiolcarbonate ester by the catalytic action of uranyl acetate.  The products of any of these reactions may be further reacted with an acid halide or anhydride, with an alkyl or aryl chloroformate, with an alkyl or aryl isocyanate or with a carbamoyl chloride to replace the hydrogen atom of the hydroxy or mercapto group by an acyl, alkoxycarbonyl, aryloxycarbonyl or carbamido group.  The preferred hydroxyalkyl thiolcarbonates have the general formula <FORM:1014343/C2/1> R is a C1- 8 alkyl, substituted alkyl (e.g. aralkyl), aryl or substituted aryl group, R1 is H, -CH2OH, CH3, C2H5, C4H9, C5H11 or C8H17, and Q is H, -COR, -CO2R, -CONHR or -CONR2 where NR2 includes heterocyclic amino groups such as piperidino), corresponding to the use, as starting materials, of 2-mercapto-ethanol, 3 - mercapto - 1,2 - propanediol, 1-mercapto - 2 - propanol, 1 - mercapto - 2 - butanol, 1 - mercapto - 2 - hexanol, 1 - mercapto - 2-heptanol and 1-mercapto-2-decanol.
Patent GB-633219-A (GB)
Title: Improvements to lighters, igniters and like apparatus
IPC: F23Q2/44
Filed: 1947-12-31
Abstract: 633,219. Wicks. QUERCIA, M., and FERDINAND, G. Dec. 31, 1947, No. 35082. Convention date, March 17, 1943. [Classes 75(i) and 75(iii)] To increase the duration of the liquid fuel supply in a lighter or a small liquid fuel lamp or stove, the wick b is placed in a slidable perforated sheath a which is surrounded by porous material d disposed in a perforated casing f which is placed in the fuel reservoir e, the open end of the sheath a being hermetically closed by a valve or the like when the apparatus is not in use as when the snuffer arm is closed. The casing f is fixed, e.g. screwed, to the reservoir e, a packing ring g being provided at the joint. The sheath a is shown urged upwards by a spring l and when in use projects above a recess in the top of the casing f, but when not in use is pressed down by a spring-urged ball or the like carried by the snuffer arm, which ball hermetically closes the recess by making a circular linear contact therewith at k. To protect the wick the upper end a<SP>1</SP> of the sheath a is preferably a separate member provided with projections a<SP>2</SP> on which the ball may rest. The wick may be of cotton, asbestos or silicates for example. The assembly may be fixed either permanently or removably to the body of a lighter or to a removable fuel reservoir, or may be removably fixed to a reservoir of the capsule type.
Patent GB-509986-A (GB)
Title: Means for protection against poison gases
IPC: A62D7/00
Filed: 1938-12-02
Abstract: 509,986. Ventilating gas-protection chambers. POELMANN, A. J. J., and ETABLISSEMENTS R. SCHNEIDER. Dec. 2, 1938, No. 35166. [Class 137] Means for purifying the air admitted to an anti-poison-gas shelter comprises a layer of hygroscopic fibrous material charged with moisture, and causing the decomposition of the hydrolysable noxious bodies. A circular pit is made, and at the centre is provided a bell-mouthed pipe 1 which is connected to a ventilating fan furnishing purified air to the shelter. The walls and bottom of the pit are covered with a layer of alfa or esparto grass, peat or other similar substance charged with moisture, and layers of activated carbon 3 and dry fibrous material 4 are superposed on the humid layer 2.
Patent GB-996289-A (GB)
Title: Improvements in or relating to rotary choppers
IPC: A01D43/08
Filed: 1961-09-29
Abstract: 996,289. Forage harvesters. J. DEERELANZ A.G. Sept. 29, 1961 [Nov. 12, 1960], No. 35198/61. Addition to 943,088. Heading A1F. [Also in Division B8] In a harvesting machine having a conduit 11 through which the crop is discharged on to a separate collecting vehicle, the conduit is formed with an auxiliary discharge aperture. 20 in its rear wall closable from the outside by a pivoted flap 47. A guide wall 53, 54 bolted to the front wall 29 of the conduit closes off the normal discharge opening of the conduit and directs the crop through the aperture 20, spreading guides 63 and swathing guides 64 being adjustably secured to the guide wall. The flap 47 may be hinged to the upper edge of the aperture 20 and form part of the guide wall.
Patent GB-490730-A (GB)
Title: Improvements in fluid control apparatus for the forward and reverse transmission gearing of engines, particularly marine engines
IPC: F15B11/12
Filed: 1937-12-20
Abstract: 490,730. Fluid-pressure servomotorcontrol systems. AKTIEBOLAGET BOLINDER-MUNKTELL. Dec. 20, 1937, No. 35271. Convention date, Jan. 14. [Class 135] [Also in Group XXIV] A fluid control mechanism for the forward and reversing gear of an engine, and in particular a marine engine, comprises a differential piston 7, 8, operating the gear-shift lever through a rod 3, to the two sides 11 and 12 of which pressure fluid can be admitted under control of a manually actuated valve 15 from an inlet 18. When pressure fluid is supplied to chamber 11 the piston is moved to the left, the chamber 12 being opened to an exhaust outlet 13 at the same time, and the gear is moved to the ahead position. Similarly, the admission of pressure fluid to chamber 12 moves the piston to the right for the reverse position. For neutral the piston occupies a central position as shown with pressure supplied to both sides of the piston and to ensure that the piston is retained in this central position a further auxiliary piston 9 is provided surrounding a reduced portion 8 of the main piston 7, 8 and having itself a reduced portion providing a chamber 10 communicating with the outlet 13. The piston 9, together with the piston 8, is of greater area than the piston 7 so that any tendency of the control piston 7, 8 to move to the right is resisted. In the opposite direction of movement, the piston 9 abuts against a shoulder 14 in the cylinder and the pressure to move the piston 7, 8 further is effective only on the area of the part 8 which is smaller than the piston 7 and this movement to the left is also prevented. When the piston has been moved into the position for ahead running the fluid pressure is relieved, so that the pump supplying the pressure fluid can run idly, by means of a plunger 33, acting against a spring- toggle mechanism 34, 36, which is exposed to the pressure in the chamber 11. When the piston reaches the end of its travel the pressure rises and moves the plunger 33 to open a passage 38 to the exhaust outlet 13.
Patent GB-851955-A (GB)
Title: Resistor
IPC: H01C1/148
Filed: 1958-11-04
Abstract: 851,955. Ohmic resistors. CORNING GLASS WORKS. Nov. 4, 1958 [Nov. 8, 1957], No. 35387/58. Class 37 A resistor comprises a dielectric rod 11 around which is a ribbon of conductive material 34. Low resistance terminals 35 are provided at each end of the ribbon being so shaped that the junction between the ribbon and each terminal lies along a line perpendicular to the longitudinal axis of the ribbon.
Patent GB-1224309-A (GB)
Title: Improvements in swivel pipe joints and in water other liquid jet monitors incorporating such joints
IPC: F16L27/08
Filed: 1969-07-14
Abstract: 1,224,309. Hydrants. JOHN W. STANG CORP. July 14, 1969 [Aug. 28, 1968] No.35394/69. Heading F1X. [Also in Division F2] The nozzle 10 of a water jet gun or monitor can be pointed in any direction by rotation of vertical and horizontal swivel pipe joints 12, 14 (see Division F2) using hand-wheels 35, or hydraulic, pneumatic or electric motors 34 and 34a.
Patent GB-1474476-A (GB)
Title: Circuit-breakers with magnetic arc driving systems
IPC: H01H73/38
Filed: 1974-08-12
Abstract: 1474476 Arc extinguishing WESTING- HOUSE ELECTRIC CORP 12 Aug 1974 [21 Aug 1973] 35436/74 Heading H1N An arc extinguishing arrangement comprises a laminated magnetizable yoke 4 surrounding at least one of the contacts on a pair of parallel conductors 13, 14 on three sides so that an arc drawn between the contacts will be magnetically driven outwardly by the field "B" induced in the yoke by the current I flowing in the conductors. Arc extinguishing plates 29 of non- magnetizable material e.g. copper with tungsten tips, or ceramic, are provided at the exit end of the space encompassed by the yoke. Instead of being window shaped as shown the yoke may be U-shaped e.g. comprising only the portion above the line X-X in Fig. 9 (Figs. 26 and 27, not shown). Arcing horns may be provided (Fig. 3, not shown). The arc-extinguishing structure may be fabricated on a base plate for use with standard replaceable circuit breaker units (Figs. 10-17, not shown).  An overload-release circuit-interrupter having two sets of contacts, with the arc-extinguishing arrangement of the invention provided for each set, release being effected by induction in a magnetic drive structure acting on a bridging contact arm against a magnetic holding device, is described (Figs. 22-25, not shown).
Patent GB-435523-A (GB)
Title: Improvements relating to the development of dyestuffs or the like on the fibre
IPC: D06B1/02
Filed: 1933-12-16
Abstract: <PICT:0435523/IV/1> <PICT:0435523/IV/2> In developing dye on fibrous materials by an acid treatment, the acid liquid enters the treating chamber in a sprayed condition. Preferably it is sprayed into the treating chamber by means of a spraying nozzle operated by air, steam or gas so as to impinge against a deflecting plate inside the apparatus which prevents the jet from directly striking the goods. As shown, Fig. 1, a spraying nozzle A is fastened to the side of the chamber J.  Acid is supplied by pipe E and steam by pipe D.  The resultant jet impinges against plate G which may be provided at its lower edge with a channel H to drain off any drops.  The flow of acid to the nozzle may be observed in a glass observation tube F, Fig. 3, placed in the acid pipe line and controlled by stopcock L.
Patent GB-972250-A (GB)
Title: Improvements in or relating to triggered plus and saw-tooth waveform generators
Inventor: FENTON ROGER WAKEFIELD
IPC: H03K3/351
Filed: 1961-10-02
Abstract: 972,250. Pulse and sawtooth circuits. MARCONI CO. Ltd. June 8, 1962 [Oct. 2, 1961], No. 35543/61. Heading H3T. A pulse or sawtooth waveform generator comprises a uni-junction transistor 1, the emitter current of which is controlled by a further switching device 4. A capacitor 3 is arranged to be charged or discharged linearly via the leakage current of the device 4 until the emitter voltage reaches the triggering value of the unijunction transistor 1, when both devices become regeneratively conductive, restoring the charge on capacitor 3. The unijunction transistor 1 and junction transistor 4 are normally conductive, maintaining capacitor 3 discharged. When a positive triggering pulse is received at A, both devices revert to their high impedance states, capacitor 3 charging via the leakage path of transistor 4 until the voltage at the emitter is sufficient to trigger the unijunction transistor 1 when both devices 1, 4 become conductive, discharging capacitor 3. The discharge is expedited by a further path via diode 8 and Zener diode 7. Positive sawtooth waveforms are available from terminal B and positive ,pulses are available from terminals A, C, D. A positive delayed pulse may be obtained from across a resistor (Fig. 3, not shown) connected in the lower base circuit of the unijunction transistor 1. The trailing edges of pulses from terminals A, C, D may be used to trigger another circuit of the type shown. A delayed negative pulse may be obtained from a resistor (Fig. 4, not shown) connected in series with the lower plate of capacitor 3. The diode 8 may alternatively be connected to a potential divider across the supply or to an external source or may be omitted (Figs. 6, 7, 5, not shown). In Fig. 8 (not shown) the lower side of capacitor 3 is connected to the positive line. In Fig. 9, an; additional unijunction transistor 1<SP>1</SP> has its emitter fed with a sawtooth voltage. This transistor will trigger when the input voltage reaches a predetermined amplitude, triggering the rest of the circuit as described.
Patent GB-958797-A (GB)
Title: Fluid flow control gate valve
Inventor: BREDTSCHNEIDER KURT BRUNO
IPC: F16K3/30
Filed: 1960-10-18
Abstract: 958,797. Valves. CRANE CO. Oct. 18, 1960, No. 35686/60. Heading F2V. A gate valve comprises a housing 1, Fig. 2, having an inlet 2 and an outlet 3, the outlet receiving a body seat plate 29 welded as at 31 and having a port 38 and a flat surface engaging the flat surface of a valve closure member 21. A flange 12 is secured across the open end of a bonnet neck 7 and a pin 32, secured to the flange engages the body seat member to prevent rotation. The inlet is also preferably provided with an insert 23, welded at 26, and having a port 27. The closure member 21 has a port 22 and the ports 22, 27, 28 are preferably of substantially triangular shape of which the bottom side may be of arcuate form. As shown in Fig. 4, the side plate 29 is provided with guide portions 53, 54 which engage the closure member 21 to guide it throughout its reciprocal movement and preferably the ports 27, 28 are so shaped to provide a Venturi-shaped flow path through the valve.
Patent GB-845706-A (GB)
Title: Improvements in or relating to devices for laterally displacing material lying on the ground
IPC: A01D78/00
Filed: 1956-11-22
Abstract: 845,706. Side-delivery rakes. VAN DER LELY N.V., C. Nov. 22, 1956 [Nov. 29, 1955], No. 35762/56. Class 6(3). [Also in Group X] In a side-delivery rake, the rake-wheels comprise oblique discs 21 driven by groundcontact, each disc having an outer marginal portion of flexible resilient material such as rubber or synthetic resin. The machine comprises a bifurcated frame 1, 2, the upper ends being formed into handles 4 and the lower ends carrying ground-wheels 8, 9. A beam 19 carrying the discs 21 is integral with an arm 18 rotatable within a bearing 16 itself rotatable on an axle 10 and lockable by a pin 13 in a raised position. Each rake-wheel Fig. 6, comprises a hub 30 and a rigid disc 32 to which is fixed the flexible disc 34, the flexible disc having integral projections 36, 37 on its face or edge and having a ring of slots or holes 38 to increase its flexibility. In modifications the projections comprise arcuate ribs, concentric ribs, or a continuous spiral rib, and the rigid disc may be dispensed with, the rubber disc being thickened near the hub. The device may be used for sweeping streets (see Group X). Specification 845,703 is referred to.
Patent GB-1035965-A (GB)
Title: Process for the production of isonitriles
Inventor: UGI IVAR
IPC: C07D307/91
Filed: 1964-09-01
Abstract: Isonitriles of the formula R-(NC)n, where R is an aliphatic, araliphatic, aromatic or heterocyclic radical and n is 1-6, are prepared by contacting R-(NHCHO)n with a tertiary amine and an acylating agent in the presence of an organic solvent, treating the reaction mixture with ammonia at from - 60 DEG  to 100 DEG  C. and separating the isonitrile product.  Suitable acylating agents are COCl2, POCl3, PBr3, PhSO2Cl and toluene sulphonyl chloride.  Many formylamine starting materials are specified, including compounds in which R is substituted by dimethylamino, ether and ester radicals, cyano, halogen, nitro, keto, carbonate ester, thioether, amino and thiophosphoric ester radicals.
Patent GB-1472863-A (GB)
Title: Intermediates for cephalosporin synthesis
IPC: C07D513/04
Filed: 1974-08-15
Abstract: 1472863 Azetidinone-thiazolines intermediates for cephalosporin synthesis SOC PARMACEUTICI ITALIA SpA 11 Aug 1975 [15 Aug 1974] 35903/74 Heading C2C A process for the preparation of azetidinonethiazolines of the general Formula I below comprises reductively dehydrohalogenating a compound of the general Formula II below In the above formulae R represents a hydrogen atom, an alkyl, cycloalkyl or alkenyl group that contains up to 12 carbon atoms and may be unsubstituted or substituted by one or more free or protected hydroxy or amino, cyano or nitro groups, a thienyl-methyl, furyl-methyl, naphthyl - methyl, cyclohexenyl - methyl or cyclohexadienyl - methyl group, or a group having the general formula in which X is a hydrogen or halogen atom, a free or protected hydroxy group, an alkyl group having 1 to 4 carbon atoms or a nitro, cyano or protected amino group; Y is a protected hydroxy, amino or carboxyl group; n is 0 or an integer from 1 to 4; and each of the groups R<SP>2</SP>, which may be the same or different, is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R<SP>1</SP> represents a hydroxy group, an alkoxy group having 1 to 4 carbon atoms, a benzyloxy, p-methoxybenzyloxy, pnitrobenzyloxy, benzhydryloxy, triphenylmethoxy, phenacyloxy, p - halophenacyloxy, or phthalimidomethoxy group, an amino group that is unsubstituted or substituted by at least one alkyl group having 1 to 4 carbon atoms, cycloalkyl group having 5 to 8 carbon atoms, phenyl group or mononuclear heterocyclic group, or an acyloxymethyloxy, acylamidomethyloxy, or free or protected hydrazino group; Hal represents a halogen atom, preferably chlorine or bromine; and Z represents a hydroxy, azido, amino, or carbamate group, an -O-alkyl, -OCO-alkyl or -S-alkyl group in which the alkyl residue contains 1 to 4 carbon atoms, an -S-aryl group, or an -S-mononuclear heterocyclic group containing one or more nitrogen and sulphur atoms. The reductive dehydrohalogenation is suitably carried out electrolytically or by the use of zinc dust in a protic solvent, or a chromium (II) salt. The intermediate compounds of Formulae (II), (III) and (IV) are described and claimed in Specifications 1,472,867, 1,472,868 and 1,472,869 respectively, and the compounds of the invention may be used as intermediates in the production of cephalosporin compounds, e.g. according to Specifications 1,472,865 and 1,466,599.
Patent GB-437406-A (GB)
Title: An improved flexible drive for airscrews
IPC: B64C11/04
Filed: 1934-12-14
Abstract: 437,406. Yielding couplings. FAIREY, C. R., Cranford Lane, Hayes, Middlesex. Dec. 14, 1934, No 35954. [Class 80 (ii)] [See also Group XXXIII] An air-screw has its action with the engine shaft at a position remote from the engine and the drive is arranged to provide a torsional flexibility of from 2 to 15‹. The screw propeller hub 4 is provided with an extended sleeve adapted to be coupled by splines at 10 to the hollow engine shaft 1 at a position remote from the engine 3, the near end being supported on the ball-bearing 9. In order to obtain this the driving shaft 1 or the sleeve 5 or both may be formed with weakening grooves or slots. In the modification the propeller hub 4 is supported on two sets of ball-bearings 9, 16 and has a flange 15 adjacent ball-bearing 16 which is secured by pin 20 to a groove or slotted sleeve 17 within the hollow driving shaft. This sleeve is secured in turn by a pin 21 to the driving shaft adjacent the ball bearing 9. It is stated that the distance between the engine bearing and the point of action of the torsion driving member with the hub is not less than the internal diameter of said torsion member and not more than six times.
Patent GB-450749-A (GB)
Title: Improvements in disc differential gears
IPC: F16D41/22
Filed: 1935-12-30
Abstract: 450,749. Differential gearing. LAVAUD, D. S. DE, 82, Rue de le Jonquiere, Paris. Dec. 30, 1935, No. 35987. Convention date, Jan. 4. [Class 80 (ii)] In a differential gear, a set of friction discs 25, 27 is arranged on each side of a central ring 19 secured to a driving drum 9, alternate discs of each set being splined in a loose drum 23 and on a hub 17 secured to the corresponding driven shaft 15, each set being arranged between an end flange of the drum 9 and a pressure plate 29 splined in the corresponding drum 23. Balls 43 engage between conical recesses 37 in the ring 19 and conical recesses 39 in the plates 29. Socket members 31 secured to one of the plates 29 and passing through elongated slots in the ring 19 slidably receive spring-loaded plungers 34 provided with conical ends engaging conical recesses 36 in the other plate 29, whereby limited angular movement between the two plates 29 is permitted against the action of the springs 33, which latter also lightly load the friction discs. During drive in either direction, the balls 43 coact with the recesses 37, 39 to apply pressure to the plates 29, while, on one of the driven shafts overrunning, the corresponding balls cause a reduction of the pressure and slipping occurs.
Patent GB-1329518-A (GB)
Title: Contactless control system for volume control and power on- off control
IPC: H03G1/02
Filed: 1972-08-02
Abstract: 1329518 Radio receiving circuits; transistor oscillator circuits MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 2 Aug 1972 [10 Aug 1971 12 Nov 1971] 36136/72 Headings H3Q and H3T A contactless control system for volume control and on-off switching comprises means to generate a suitable contro signal, means to receive this signal and produce a D.C. voltage, corresponding to its duration, and memorize this voltage, means to obtain a D.C. control voltage by read out of the receiving and memorizing means, a sound amplifier whose degree of amplification is controlled by the D.C. control signal for volume control and a semi-conductor switching element connected between a power source and a load and which is switched on and off in response to the D.C. control signal. In one embodiment sound control signals are picked up by microphone 11, amplified in amplifier 12 and separated according to frequency in filters 13, 14, the outputs of which are rectified by diodes e.g. 15 to produce a smoothed D.C. voltage across an output filter e.g. 17, 19. The D.C. voltages bias transistors 20, 22 respectively: when biased conductive, transistor 20 charges memory capacitor 25 via resistor 23, while if transistor 22 is rendered conductive the capacitor 25 is discharged via resistor 24. The potential on capacitor 25 provides gate bias for FET 26, the drain potential of which is applied via terminal 28 to control the audio gain. When the drain potential of FET 26 rises to a predetermined value it biases transistor 35 conductive. This transistor is back-coupled via capacitor 36 to constitute an oscillator; when it oscillates, the output is fed via transformer 37 to diode rectifier 38, the smoothed output of which is applied as a bias to transistor 40. Transistor 41 is then turned off, so the gate bias of triac 42 vanishes, rendering it non-conductive and so removing the supply from terminal 45 to load 43. In a modification, a two stage D.C. amplifier is interposed between the rectified output of filter 14 and base of transistor 22; this D.C. amplifier derives collector potentials from the controlled side of triac 42, and so is switched off as soon as the triac is turned off (Fig. 5, not shown). In a second embodiment the filters 13, 14 are replaced by oscillators which are rendered operative by means of touch contacts (Fig. 3, not shown).