baber/WOPTO huggingface dataset:
Patent GB-1465694-A (GB)
Title: Preparation of penicillin salts
IPC: A61K/
Filed: 1973-05-15
Abstract: 1465694 Crystalline salts of amoxycillin BEECHAM GROUP Ltd 3 May 1974 [15 May 1973] 22982/73 Heading C2C A crystalline solvate of an alkali metal or alkaline earth metal salt of amoxycillin is obtained by adding a source of alkali metal or alkaline earth metal cations to a solution of amoxycillin or a salt thereof, the solution containing a pharmaceutically acceptable amide. Suitable amides include urea and compounds of the formula RCONR 1 R 2 , where R is H or CH 3 , and R 1  and R 2  are each H, CH 3  or C 2 H 5 , especially dimethyl formamide or dimethyl acetamide. The source of cations may be any of the precipitating agents used previously in preparation of, e.g. Na, K, Mg, Al or Ca salts of ampicillin, preferably sodium 2-ethylhexanoate or sodium methoxide. The invention also comprises a crystalline solvate of sodium amoxycillin and dimethyl formamide having the formula
Patent GB-670559-A (GB)
Title: Improvements in or relating to electric contact arrangements particularly adapted for use with electromagnetic circuit-breakers
IPC: H01H71/68
Filed: 1946-08-02
Abstract: 670,559. Automatic circuit-breakers; electromagnetic switches. KESL, K. Aug. 2, 1946. [June 20, 1941] No. 23129/49. Addition to 670,558. Class 38 (v). In a modification of the circuit-breaker . described in the parent Specification, the movable contacts 1 are mounted on the bridgepiece 61 of a two-armed lever 5, which is pivoted at 4, 4<SP>1</SP> to operating- arms 3, 31 which are themselves pivoted to the frame at 1, 1<SP>1</SP>. A tension-spring 8 is attached to a pin 6 carried by the end of the lever 5, and the pin 6 is located in a cam-slot 50 in a lever 16, which is pivoted at 20, and when the breaker is closed, is engaged by the semi-circular end 51 of a spindle 52 so as to hold the pin 6 in alignment with the pivots 1, 1<SP>1</SP>. The breaker opens when the spindle 52 is rotated clockwise by the armature 54 of an overload coil 19, or by a bi-metal strip 55 engageable with the end 53 of the armature, so as to disengage the lever 16 which rotates clockwise under the action of the spring, 8, thereby allowing the, pin 6 to move out of alignment with pivots 1, 1<SP>1</SP> and separate the contacts 9, 12. The opening movement is then completed by the pivoting of the arms 3, 3<SP>1</SP> on the de-energization of a holding magnet, which releases an armature carried by a stirrup 60 secured between the arms 3 3<SP>1</SP>. Reclosure of the circuit-breaker is effected by the energization of the holding magnet after the lever 16 and pivot 6 have been returned to their original positions by the manual rotation of a cam 49 which engages with a pin 62 carried by the lever 5.
Patent GB-474270-A (GB)
Title: Improvements in or relating to methods of cooling rooms or like spaces and apparatus therefor
IPC: F24F5/00
Filed: 1936-08-24
Abstract: 474,270. Moistening air. CORNELL, jun., E. S. Aug. 24, 1936, No. 23244. Convention date, Aug. 24, 1935. [Class 55 (ii)] [Also in Group XIII] Water is circulated by a pump to perforated pipes 13 surrounded by fabric contained in a casing 16 to which air is supplied by a blower 17. The air may be warmed by a heat exchanger 21. Specifications 457,387 and 467,625, [both in Group X], are referred to.
Patent GB-285331-A (GB)
Title: Improvements in grinding wheels particularly adapted for grinding wood pulp
IPC: B24D5/06
Filed: 1927-09-05
Abstract: 285,331. Marks, E. C. R., (Norton Co.). Sept. 5, 1927. Rasping and like abrading apparatus.-An abrasive wheel for use in grinding logs into wood pulp comprises a number of abrasive segments mounted upon a rotatable support to which they are secured by means including resilient members to which initial stresses are imparted sufficient to hold the segments under pressure against the support irrespective of any expansion or contraction of the wheel incident to normal usage. The resilient members may consist of bolts made of material of high tensile strength and of high elastic limit, such as nickel steel, the initial stress being imparted to the bolts by elongating them within their elastic limits, and the bolts are associated with clamping-blocks which may be wedge shaped and engage bevelled surfaces on lugs provided on the wheel segments. As shown, the segments 2 are clamped on the drum 1 by by means of bevelled wedge-blocks 6 arranged between the segments in grooves in the sides of adjacent segments and adjustably fastened to the drum by means of bolts 7. The grooves 6 are arranged so that the distance a-a from the inner surface of the segment is substantially equal to the distance a-b between the grooves in order that the force required to shear off the two clamping corners of a segment is substantially equal to the tensile strength transversely of the segment between opposite clamping-blocks. The blocks 6 have radially-disposed screw-threaded holes 11 to receive the upper ends of the bolts which are reduced in section throughout their medial portion 12 between the threads 13, 14 at their upper and lower ends. The nuts 17 at the inner ends of the bolts engage collars 18 resting against the inner surface of the drum. Alternate blocks are held initially in fixed position by a spacer block 20 which limits the inward movement of the block 6 during assembly of the wheel, a tongue 22 on the spacer engaging a groove 23 in the block 6. The spacer 20 rests in a slight depression 24 in the drum 1, and during assembly of the segments a thin shim is placed between the spacer and the depending portion 21 of the block 6, after which the bolts 7 are tightened. After the blocks 6 on each side of the fixed one have been set tightly in place, the shims are withdrawn and the bolts tightened. Metal shoes 30, 32 are provided in the grooves in the sides of the segments and on t.he inner periphery of each segment adjacent its outer corner. The shoes 30, 32 may be made of zinc or bablitt and may be connected by strips 34 which lie in grooves in the faces of the segments. A metal filler which wears away at substantially the same rate as the segments is run into the crevices 35 between the segments, and grooves 36 may be provided nn one side of each segment to assist in holding the filler in position. Specification 238,176 is referred to.
Patent GB-972870-A (GB)
Title: One way check valve
IPC: F16K15/18
Filed: 1962-06-18
Abstract: 972,870. Valves. ATWOOD & MORRILL CO. June 18, 1962 [Sept. 13, 1961], No. 23394/62. Heading F2V. A free swinging hinged check valve has means for positively closing the valve. The closure 30 is carried by a sleeve 34 rotatable on a shaft 36 on which is keyed a dog 56 engaging with lost motion in a corresponding dog 62 on the sleeve 34. On energization of an air motor 80 against a spring 86 the shaft 36 is rotated through piston-rod 78 connected to an arm 74 to rotate the dog 56 counterclockwise in Fig. 3 and allow free swinging movement of the closure 30, the opening being limited by a stop 68 on the closure engaging the valve body. On deenergization of the air motor the valve is closed by the spring 86. In a modification, the dogs 56, 62 are replaced by inter-engaging toothed members 137, 134, Fig. 5, the lost motion being taken up against a trapped body of liquid between the teeth to avoid shock on closing and act as a dashpot in the opening direction. The valve chamber is closed by a cap 16 outwardly tightened against a sealing-ring 18 by bolts 24 and strongback 26. In a boiler feedwater system, Fig. 6, an auxiliary three-way valve supplies and exhausts the air motor 80 of the main valve under the control of a solenoid in circuit with the line current to a motor 104 driving the feedwater pump 100 which delivers through the main valve, the arrangement normally being that de-energization of the pump motor also de-energizes the air motor 80 to effect the spring closing of the main valve.
Patent GB-480953-A (GB)
Title: Process for the conversion of alkali metal chlorides into carbonates
IPC: C01D7/00
Filed: 1936-08-26
Abstract: Alkali metal carbonates are obtained from alkali metal chlorides by converting the chloride into an acetate by double decomposition with an acetate of another base, and converting the resulting alkali metal acetate into carbonate by subjecting it as a dry powder or in a non-aqueous solution to the action of carbonic anhydride, the acetic anhydride also produced being employed to re-convert a hydroxide or an oxide, formed from the chloride produced in the initial double decomposition, back to its acetate.  According to an example, an aqueous solution of potassium chloride is mixed with an aqueous solution of lead acetate.  The product after being maintained for one hour at 100 DEG  C. is centrifuged to separate lead chloride.  The remaining solution is cooled to deposit potassium acetate.  The deposited acetate is dried and dissolved in alcohol.  The solution is treated with carbon dioxide preferably at a temperature not exceeding 20 DEG  C., either by forcing a current of gas through the solution or by dispersing the solution into the gas.  Potassium carbonate is deposited, any lead still in the solution being deposited in the earlier stages.  Any small quantity of water present leads to a production of some bicarbonate.  The precipitated potassium carbonate may be separated with a centrifuge, washed with alcohol and heated to remove residual bicarbonate and alcohol.  The residual alcoholic solution containing acetic anhydride and some acetic acid is reacted with lead hydroxide produced from the chloride of lead (say by reaction with lime) to regenerate the lead acetate, the alcohol being separated by distillation.ALSO:Acetic anhydride is obtained by reacting an alkali metal acetate either in dry powder form or in non-aqueous solution (e.g. in alcohol) with carbon dioxide.  In an example, an alcohol solution of potassium acetate is carbonated, preferably at a temperature not exceeding 20 DEG  C.
Patent GB-877531-A (GB)
Title: Substituted acrylamido-penicillanic acids
IPC: C07D499/46
Filed: 1960-07-05
Abstract: The invention comprises compounds of the general formula <FORM:0877531/IV (b)/1> wherein R1, R2 and R3 each represent a hydrogen, chlorine, bromine or iodine atom, a trifluoromethyl, C1-C12 alkyl, C1-C6 alkoxy, hydroxy, nitro, cyclohexyl, or benzyl group and non-toxic salts thereof, and the preparation of the compounds by reacting 6-amino penicillanic acid or a neutral salt thereof with an acid chloride of the general formula:  <FORM:0877531/IV (b)/2> or with its functional equivalent as an acylating agent for a primary amino group.  Such equivalents include the corresponding acid bromides, acid anhydrides and mixed anhydrides with other carboxylic acids including monoesters and particularly lower aliphatic esters, of carbonic acid.  Salts include non-toxic metallic salts such as, sodium, potassium, calcium and aluminium, the ammonium salt and salts of amines such as trialkylamines, procaine, dibenzylamine, N-benzyl-beta-phenethylamine, l - ephenamine, N,N1 - dibenzylethylenediamine, dehydroabietylamine, N,N1-bis-dehydroabietylethylenediamine.
Patent GB-324083-A (GB)
Title: Improvements in the purification of paraffin wax
IPC: C10G73/42
Filed: 1928-08-15
Abstract: 324,083. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Aug. 15, 1928. Paraffin wax, purifying.-In purifying paraffin wax by treating with a solvent of the oil but not of the wax, and filtering, a continuous suction filter is used. In an example, brown coal tar oil containing 20 per cent of paraffin is cooled with stirring to 10‹ C.; the separated wax is filtered .off, stirred at -5‹ C. with 2 vols. of 0.760 benzine, filtered, washed with benzine previously cooled to -5‹ C., and treated with steam to remove residual solvent. The benzine may be replaced by acetone, or mixture of benzene with ethyl alcohol of 96 per cent strength. The filter used consists of a rotary filter drum dipping into the material, reduced pressure being maintained inside and the deposit being continually removed by scrapers. Specifications 164,325 and 260,129 are referred to.
Patent GB-962072-A (GB)
Title: Improvements in mats
Inventor: STANDEN ALBERT HENRY
IPC: A47L23/24
Filed: 1962-06-19
Abstract: 962,072. Mats. CIMEX Ltd. June 13, 1963 [June 19, 1962], No. 23599/62. Heading A4S. A mat comprises spaced parallel slats 10 of aluminium alloy, a strip 11 of rubber or other resilient material undulating between each pair of slats and secured to one of them by tubular connectors passing through the strip and slat, and wires 20 each extending through a connector on each slat and secured at each end to an end part of the mat to hold the slats together. The connectors are in the form of eyelet rivets 16 having a preformed flange 17 resting against the strip 11 and the other end 18 being turned over to engage the slat 10. End parts 12, 13, 14 of the mat are ramps of extruded aluminium alloy, secured together by screwing to corner fillets 27, and the end part 15, to lie against a vertical surface, is a slotted hollow rectangular member one end of each wire 20 being passed through a hole 21 until held by a cable nipple 22 threaded through the rivets 16 and secured by a cable nipple 26 passed through a slot 25 in the end part 12 and held between projections 23 by tension in the wire. A securing wire for the ends of the members 13, 14 remote from the part 12 passes longitudinally through the end part 15 and is secured by nipples. In modifications a mat intended for a well is frameless, ramp members are provided on four sides of the mat, the slats are constructed similarly to the end part 15 the rivets extending through wall opposite the slot, or the wires 20 are replaced by a single wire. Specifications 663,249, 665,410 and 836,181 are referred to.
Patent GB-1025719-A (GB)
Title: Polymerisation process
IPC: C08F214/06
Filed: 1964-06-09
Abstract: Ethylenically unsaturated monomers are polymerized by a process which comprises adding thereto in aqueous medium a catalyst comprising (i) a water-soluble peroxide, (ii) an inorganic basic substance and (iii) an acid halide.  Specified monomers are vinyl chloride, vinyl acetate, vinyl stearate, vinyl ethers and acrylic, methacrylic and itaconic esters, and mixtures, e.g. of vinyl chloride with butyl acrylate, 2-ethylhexyl acrylate or monobutyl itaconate.  The preferred peroxide is hydrogen peroxide.  The basic substance may be an alkali metal or alkaline earth metal hydroxide or carbonate.  The acid halide may be sulphuryl chloride or benzene sulpho-chloride. Polymerization may be effected in the presence of dispersing agents, e.g. methyl cellulose or polyvinyl alcohol.  Examples describe the copolymerization of vinyl chloride and 2-ethylhexyl acrylate in the presence of hydrolysed polyvinyl acetate, hydrogen peroxide, sulphuryl chloride and (2) calcium hydroxide and a silicone oil and (3) sodium carbonate; the co-polymerization of vinyl chloride and butyl acrylate in the presence of (4) hydrolysed polyvinyl acetate, hydrogen peroxide, calcium hydroxide and benzene sulpho chloride; and the polymerization of vinyl chloride in the presence of (5) hydrolysed polyvinyl acetate, hydrogen peroxide, sodium carbonate and benzene sulpho-chloride.  The products are said to comprise porous, non-uniform granules having good absorption power for additives.
Patent GB-243852-A (GB)
Title: Improvements in or relating to fixed condensers more particularly for use in connection with wireless telegraphy and telephony
IPC: H01G4/32
Filed: 1924-10-09
Abstract: 243,852. Igranic Electric Co., Ltd., and Bitton, E. A. Oct. 9, 1924. Condensers of the fixed type comprising two conductive leads insulated from one another and wound in close mutual physical relationship into a common coil, one of the leads forming one plate and the other lead the other, with the insulation and air between them forming the dielectric, are made so that the coil into which the leads are wound is of rectangular or square formation. In Fig 1, two enamel wires 1 are twisted together non-inductively and wound in layers to form a square coil on a former 2, the wires being preferably covered with a tube of insulating material. The wires, instead of being twisted, may be made non-inductive by being wound simultaneously in opposite directions. In Fig. 4, two lengths of conducting tape 1<a> are separated by insulating tape 3a and wound into a square coil of any number of layers. The condensers may be mounted in a small box or by sealing in wax or moulded material, and may be capacitatively adjusted during manufacture by cutting off small lengths from one end of the coil. There may be more leads than two arranged to form electrically disconnected sets in accordance with usual multi-plate condensers.
Patent GB-204498-A (GB)
Title: Means for longitudinally joining two or more belts
IPC: F16G3/00
Filed: 1922-09-05
Abstract: 204,498. Sonesson, A. E. Sept. 5, 1922. Belts. - A wide steel or other metal belt is made by joining two or more belts 1, 2 by means of rivets 4 and projecting tongues 3 formed on one or both edges of one or more of the component belts, the arrangement being such that portions of each component belt alternately overlap and are overlapped by portions of the adjacent belt. According to the Provisional Specification the tongues may be secured by welding or brazing to the belt they overlap.
Patent GB-897564-A (GB)
Title: Arrangements for regulating the height of the lubricating film on the slide tracks of machine tools
Inventor: AXER HEINRICH
IPC: F16C29/02
Filed: 1960-07-09
Abstract: 897,564. Lubricating. SCHIESS A.G. July 9, 1960, No. 24019/60. Class 12 (3). In a means for regulating the height of the lubricating film on the slide 3 of a machine tool, pressure chambers 5 in a support bed 2 are connected to a pump 11, the flow of lubricant is adjusted by a throttle-valve 14, sensing means 7 are positioned in each of the chambers 5 to measure the height of the film, reference means 8 compare the desired with the actual height of the film, an amplifier 9 is connected to the reference means 8 and to means which actuate said throttlevalve 14. In operation, the variations between the desired and actual height of the film vary the speed of a control motor 10 which drives a gear 21<SP>1</SP> of a differential drive 25, the latter having a gear 21 driven by a constant-speed motor 22. A shaft 19, of the drive 25, is engaged by an adjustable rod 17<SP>1</SP> so that variations in speed of the motor 10 causes rotation of the rod 171 by the shaft 19. The rod 17<SP>1</SP> is screw-threaded at 18 and engages an internal thread of an extension 16 of a piston-rod 17. The rotation of the rod 17<SP>1</SP> causes the piston-rod 17, having a piston 15 attached thereto, to slide in the valve 14.
Patent GB-241547-A (GB)
Abstract: 241,547. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Hill, L. H.). Oct. 14, 1924, [Convention date]. Drying air and gases.-In apparatus for drying gases in which the reagent is held in a container surrounded by a casing through which the gas to be treated is passed, the container is movably supported in the casing in such a way that its position indicates the condition or degree of exhaustion of the reagent. The reagent 19 is held in a porous container 18 mounted on a spring 17 in a casing 5. The container 18 carries at the bottom a rod 26 terminating in a pointer 27 the position of which can be observed through windows 16, the increase in weight and final exhaustion of the reagent being indicated by the sinking of the pointer 27.
Patent GB-461997-A (GB)
Title: Improvements in methods of exterminating corn beetles and other vermin
IPC: A01N59/26
Filed: 1935-08-29
Abstract: Phosphides of calcium, barium, aluminium, or magnesium are placed in or near heaps of grain so as gradually to evolve hydrogen phosphide by the action of the moisture of the grain or the air, and thereby to destroy vermin in the grain.ALSO:Corn beetles and other vermin in grain are destroyed by introducing a solid substance which will evolve hydrogen phosphide into or directly beside the stored grain. The phosphides of calcium, barium, aluminium, and magnesium are referred to as suitable materials; they react with the moisture of the grain so as gradually to evolve hydrogen phosphide.  The solid compound, preferably in tablets of standard size, may be packed in a paper, fabric or metal gauze bag enclosed in a perforated container which is in turn enclosed in a second gauze bag.  This package is embedded in the grain and the whole covered by a tarpaulin.
Patent GB-317645-A (GB)
Title: Improvements in back-lining feed mechanism for book cover making machines
IPC: B42C7/00
Filed: 1928-08-23
Abstract: 317,645. Schramm, C. Aug. 23, 1928. Feeding webs.-The rollers for feeding a back-lining strip into a machine for making book-covers are rotated by mechanism comprising a pinion which is oscillated by a reciprocating rack 3, Figs. 1 and 4, and engages an oscillatory toothed quadrant 10 coupled to a second quadrant 20 pivoted at 19, the movement of the latter quadrant being imparted to a pinion 21 which is loosely mounted on a shaft 22 and is secured to a coaxial ratchet wheel 23 whereby movement is imparted to a rotary pawl-carrier 24 secured to the shaft and communicated to a gear train 27 - - 29. The gear 29 is secured to the shaft 30 of the lower feed-roller 31 and engages the gear 34 of the upper feed-roller 33. The web 35 is drawn from the supply roller 37 during the forward movement of the reciprocating rack 3, the pawls 25 slipping luring the return movement. The coupling beneath the toothed quadrants 10, 20 is such that the feed starts slowly, increases, and then slows down, thereby relieving the web of sudden tensioning. To effect, this coupling one side of the quadrant 10 has a radial guide-slot 13 to receive a slidable block 14 carrying a stud 16 on which is pivoted a block 17 engaging within a forked arm 18 on the quadrant 20. The position of the block 14 is adjustable by means of a screw 15 extending through the block and the shaft 12 on which the quadrant 10 is pivoted, enabling the amount of the web fed at each stroke to be varied. The quadrant 10 is driven by a pinion 9 secured on a shaft 6 and adapted to be. coupled by a clutch 7 to a pinion 5 which is loosely mounted on the shaft and is engaged by the rack 3. The web roll 37 is mounted on a spindle supported by a fixed arm 39 extending downwardly from the machine frame, a number of rolls being carried simultaneously by the shaft and arranged so that as one is exhausted the next one can be moved into the unwinding position adjacent to the arm 39 after swinging an arm 41 which is pivoted to an offset arm at the top of the arm 39 and is recessed at its lower end to embrace the roll-carrying spindle. From the supply roll the web passes through a tensioning device and between edge-trimming cutters 49 to the feed rollers 31, 33, from whence it is advanced along a guideway 36 to the book-covering devices. Specincation 8739/97, [Class 16, Books &c.], is referred to.
Patent GB-156324-A (GB)
Title: Improvements in machines for charging vertical gas retorts and the like
IPC: C10B31/02
Filed: 1919-10-06
Abstract: 156,324. Goodall, Clayton, & Co., Ltd., Payne, C. R., and Archdale, J. A. Oct. 6, 1919. Charging.-The hopper A of a charging- machine for vertical retorts is provided with shoots B, having telescopic ends C to engage with the mouthpieces of the retorts, these ends being slidably controlled by levers and links D, F, and being suspended in their raised position by hooks G. Reference has been directed by the Comptroller to Specification 28941/10.