baber/WOPTO huggingface dataset:
Patent GB-387496-A (GB)
Title: Improvements in the manufacture of piperidine pentamethylene dithiocarbamate
IPC: C07D295/21
Filed: 1932-01-20
Abstract: Piperidine pentamethylenedithiocarbamate is manufactured by separately dissolving approximately two molar proportions of piperidine and one of carbon disulphide in a solvent or solvents in which the reagents are soluble and the reaction product insoluble, the total quantity of solvent used being between 3 and 7 times the amount of piperidine by volume, mixing the solutions, cooling the mixture during the reaction, and filtering and drying the product. Preferably commerical 95 per cent piperidine (containing 95 per cent piperidine bases) is employed.  With this reagent the solvent, after being made up to the predetermined volume, can be used in all four times or even more according to the stability required in the product and the nature of the impurities in the piperidine.  To obtain an exceptionally stable product, piperidine should be employed which has been "aged" by standing, preferably with the addition of strong caustic soda, for several weeks, and which is distilled immediately before use. In an example, 95 per cent piperidine is employed and the solvent is petroleum spirit of boiling point 135-150 DEG  C., which is used four times with a consumption of less than two pounds per pound of piperidine.  Instead of using the same solvent for both reagents, different solvents may be employed provided the reagents are each soluble in both solvents and the reaction product is insoluble in the mixture.  Reference has been directed by the Comptroller to Specification 358,230.
Patent GB-1413693-A (GB)
Title: Device for regulating thermal relays
IPC: H01H71/74
Filed: 1973-01-12
Abstract: 1413693 Circuit tripping mechanism LA TELEMECANIQUE ELECTRIQUE 12 Jan 1973 [14 Jan 1972] 1829/73 Heading H1N A device for setting the operating current of a thermal trip relay includes a bimetallic ambient temperature compensator 8 in the form of a lever acted upon by a transmission member 2 and arranged so that the point of application of the transmission member 2 on the lever is varied at the same time as the gap between the transmission member 2 and a thermally responsive element 1 is set by adjustment of a regulator arm 6 which may be copivotal with the lever 8. The lever 8 has a latch 16 which retains a slide 10 as in Specification 1,412,831. As shown, the distance b is increased as the current setting is increased so that sensitivity is reduced but if an increase in sensitivity with increase in current setting is required the pivot point of the lever 8 should be on the other side of the abutment 4 of member 2 (Fig. 2, not shown). The transmission member may be a lever with an adjustable pivot (Fig. 3, not shown).
Patent GB-1117882-A (GB)
Title: Improvements in or relating to firearms
Inventor: VESELY JOSEF
IPC: F41A3/58
Filed: 1965-01-15
Abstract: 1,117,882. Small-arms. BIRMINGHAM SMALL ARMS CO. Ltd. 14 Jan., 1966 [15 Jan., 1965], No. 1848/65. Heading F3C. A firearm, in particular a sporting gun, comprises a barrel pivotally mounted on a pin 5 of the body 7 and having brazed thereon a lump 2. The barrel 1 is locked in its firing position by a rotatable shaft 10 the lower end of which is formed with a cam surface 12 to co-operate with the upper surface of the lump 2. The shaft is rotated by means of a top lever 11, the shaft being urged into its barrel locking position by a spring loaded slide 25, one end of which acts against a surface formed in a slot 22 in the shaft. The shaft 10 is retained against axial movement by a pin 14 working in a slot 15 of the shaft. The lower end of the shaft is formed with a slot (Fig. 3, not shown) which, when the shaft is rotated, co-operates with the lump 2 to allow the barrel to pivot downwardly, the spent cartridge at this time being ejected by an extractor slide 4. The slide 25 on being forced rearwardly by the rotation of the shaft 10 carries with it a spring loaded firing pin 16, the firing pin then being held in its retracted position by the trigger 19. The trigger may be squeezed when a safety lever is moved out of engagement therewith.
Patent GB-784670-A (GB)
Title: Heterocyclic quinones
IPC: C07D241/46
Filed: 1956-01-20
Abstract: Phenazine-quinones of the formula <FORM:0784670/IV (b)/1> where R is hydrogen, alkyl, halogen, hydroxy, alkoxy or acyloxy, are obtained by oxidizing the corresponding 1 : 4-dihydroxyphenazines with an oxide or oxyacid of a halogen, particularly bromic acid in the form of a concentrated aqueous solution of its alkali metal salt; the invention also includes the products as above with the proviso that if R is alkyl it contains at least two carbon atoms.  An example is given of the oxidation of 1 : 4-dihydroxyphenazine itself with aqueous potassium bromate. It is stated that the products may be used as dyestuffs.ALSO:Phenazine-quinones of the formula: <FORM:0784670/IV (a)/1> where R is hydrogen, halogen, alkyl, hydroxy, alkoxy or acyloxy, are obtained by oxidizing the corresponding 1 : 4-dihydroxyphenazines with an oxide or oxyacid of a halogen, particularly bromic acid in the form of a concentrated aqueous solution of its alkali metal salt; the invention also includes the products as above with the proviso that if R is alkyl it contains at least two carbon atoms.  An example is given of the oxidation of 1 : 4-dihydroxyphenazine itself with aqueous potassium bromate.
Patent GB-608969-A (GB)
Title: Biotin and its analogues and methods for obtaining the same
Filed: 1946-01-23
Abstract: Biotin and its analogues (21-keto-3,4-imidazolido-2-o -substituted alkyl thiophenes) are made by hydrogenating, in the presence of a sulphide of p  molybdenum, nickel, cobalt, tin or iron, a compound of formula <FORM:0608969/IV(b)/1> where n=1 to 8 and the alkylene residue -CnH2nis straight or branched, and where R1 is -COOH, -COOM, -COOR1, alkoxy, aralkoxy or aryloxy, R1 being lower alkyl and M representing a salt-forming group or metal such as sodium or other alkali metal, alkaline earth metal, ammonium or substituted ammonium. The reaction may be carried out in a solvent consisting of dioxane, a lower monohydroxy or polyhydroxy alcohol, or their lower molecular weight ethers.  In examples: (1) a mixture of 2,3,4,5-tetradehydrobiotin, dioxane and molybdenum trisulphide-alumina gel catalyst is hydrogenated to yield dl-biotin; (2) a mixture of 21-keto-3,4-imidazolido-2-g -phenoxypropylthiophene, alcohol and molybdenum trisulphide-alumina gel catalyst is hydrogenated to yield mainly 21-keto-3,4-imidazolido-2-g -cyclohexyloxypropyl - tetrahydrothiophene.  Similarly, a compound of the formula <FORM:0608969/IV(b)/2> is obtained by hydrogenating 21-keto-3,4-imidazolido-2-g -benzyloxypropylthiophene. 2,3,4,5-Tetradehydrobiotin is prepared by the following series of reactions: Ethyl 3-chloropropyl malonate, obtained from trimethylene chlorobromide and ethyl malonate, is converted to ethyl 5-chloro-valerate by hydrolysis, decarboxylation and esterification, and is then combined with ethyl malonate to give ethyl pentane-1,1,5-tricarboxylate.  Hydrolysis, treatment with sulphuryl chloride, and heating to decarboxylate at the 1-carbon atom gives a -chloropimelic acid which, by reacting with the sodium salt of b -mercaptopropionic acid and esterifying, is converted to 2-carbethoxyethyl-11,51-dicarbethoxyamyl sulphide.  Cyclization by the Dieckmann reaction gives ethyl - 4 - carbethoxy - 3 - keto - tetrahydrothiophenevalerate which is converted through its oxime to ethyl 3-amino-4-carbethoxyl-2-thiophenevalerate by treatment with dry HCl followed by decomposition of the resulting amine hydrochloride. The di-ester is selectively hydrolysed to 3 - amino - 4 - carbethoxy - 2 - thio - phenevaleric acid which by treatment with benzoyl chloride followed by Curtius degradation through the hydrazide and azide, and refluxing of the azide with alcohol, gives 3 - benzoylamino - 4 - carbethoxyamino - 2 - thio - phenevaleric acid. This is hydrolysed to the free diamine and treated with phosgene to give 2,3,4,5-tetradehydrobiotin.  21 - Keto - 3,4 - imidazolido - 2 - g  - phenoxypropyl-thiophene is prepared from diethyl ester of g -phenoxypropylmalonic acid by the same series of reactions as shown for ethyl pentane-1,1,5-tricarboxylate above.
Patent GB-338801-A (GB)
Title: Improvements in or relating to brooms, mops, squeegees and the like
IPC: A47L13/46
Filed: 1930-01-30
Abstract: 338,801. Pomfret, M. Jan. 23, 1930. Holders with clamping-devices for brushes; locking catches for socket fixings. - A broom, mop, squeegee, &c. 1 is secured to a handle 4 by means of a saddle member 2 having clips 5, 6 for engaging the edges of the stock, a socket member 3 integral with or secured to the saddle and adapted to receive the handle and spring catches 18 screwed to the handle at 19 and having turned-over ends 20 adapted to engage apertures 17 in the socket. A plug 13 secured to the saddle by lugs 14 engages the normal hole 12 in tne brush stock. The clip 6 may be hinged at 11 to a slotted plate 7 adjustably connected by a bolt and nut 9, 10 to the saddle 2.
Patent GB-860319-A (GB)
Title: Improvements in or relating to wall coverings of synthetic resinous materials
IPC: E04F13/08
Filed: 1959-01-22
Abstract: 860,319. Laminates. SATTLER, L. Jan. 22, 1959 [Feb. 1, 1958], No. 2350/59. Drawings to Specification. Class 140. A wall covering comprises a plurality of tiles of synthetic resinous material secured to a backing sheet of polyester-diisocyanate foam. The tiles may be secured to the backing sheet by a synthetic resinous adhesive.
Patent GB-936954-A (GB)
Title: Two-directional drive and anti-reverse lock mechanism
IPC: F16B1/04
Filed: 1960-01-22
Abstract: 936,954. Friction brakes. FROMSPRAG CO. Jan. 22, 1960 [Feb. 27, 1959], No. 2429/60. Class 103 (1). A bi-directional torque transmission device with means preventing reaction in either direction of a driven member, such as a shaft 65, on a drilling member, such as a gear 70 journalled thereon, for the controls of aircraft or missile rudders &c., bulldozer or grader scraper blades, automotive steering, or hoists, comprises oppositely directed sets of sprags 82 which are pivotally socketed in an inner member 75 keyed on the shaft 65 and are urged by a garter spring 93 to wedgingly engage a fixed outer race 80 for said prevention of driven member reaction, and on rotation in either direction of the driving member axially extending fingers 85 thereon first take up slight lost motion to release the wedging set of sprags by engaging the outer sprag portions 94 and then take up the remaining lost-motion to drive the inner and driven members through the socketed portions 91 of the released sprags. The sockets in the inner member are suitably shaped to prevent the sprags from leaving their sockets under driving or centrifugal force.
Patent GB-364866-A (GB)
Title: Box appliance to be used as loom for simple manually-operated weaving
IPC: D03D29/00
Filed: 1931-01-26
Abstract: 364,866. Hand-power looms ; boxes. MACK, E. A., Red Roof, Frampton Cotterell, near Bristol. Jan. 26,1931, No. 2455. [Class 142 (ii).] A loom for hand weaving with a continuous warp comprises a box open at the top and having holes to accommodate rollers H, I serving as cloth and warp beams. The rollers project sufficiently at one side to allow their ends to be used for adjusting a continuous warp, whilst wedges K coacting with the rollers and with a fixed diagonal bar J can be used to fix the beams in position during weaving. The box has projecting uprights furnished with bars E for supporting the warp to facilitate easy weaving.
Patent GB-121037-A (GB)
Title: Improvements relating to Radial Arm Drilling Machines.
IPC: B23Q1/28
Filed: 1918-02-13
Abstract: 121,037. Archdale & Co., J., and Jewsbury, J. Feb. 13, 1918. Drilling-machines.-Mechanism for locking the arm of a radial-arm drilling-machine to the pillar, of the kind having two short independently-operable shafts g in line, for operating, through eccentrics at their outer ends, and links d, the split portions of the sleeve a of the arm, is operated as follows :-Levers h, h on the adjacent ends of the shafts g are coupled by links i, i to a compensating-lever j actuated by an eccentric k on a shaft l, so that on turning this shaft, the clamping devices are simultenously locked, each to the full amount, or unlocked.
Patent GB-328558-A (GB)
Title: Method of and means for reclaiming used lubricating oils
IPC: C10M175/00
Filed: 1929-01-25
Abstract: 328,558. Chetwin, H. W., and Mann, W. Jan. 25, 1929. Recovering waste lubricants. - Used lubricating oils having a flash point below 350‹ F. are reclaimed by boiling in a. tank 1 with alum, e.g. 20 per cent bv volume of a 10 per cent solution of alum, maintaining at 180-190‹ F. e.g. for 4 hrs., settling e.g. tor 10 hours, filtering or centrifuging e.g. by a centrifuge 3, passing through a continuously working still 4 to remove volatiles through pipes 8, 9 to water-cooled receivers 7, agitating with 1-5 per cent of sulphuric or equivalent acid in a vat 10 for about 1 hr., washing with alkali e.g. a 2-5 per cent suspension bf calcium hydrate in water, and filtering e.g. in a press 12. If the used oil be comparatively clean passage through the centrifuge or filter 3 may be omitted. The apparatus may be used to treat oils with flash points above 350‹ F. by a process already known by omitting passage through the still 4. When the used lubricating oil is not in the form of an emulsion the treatment in the tank 1 consists solely in heating to 150-160‹ F. without alum e.g. for 4-6 hrs. and settling for 10 hrs. The still 1 consists of one or more iron or other pipes e.g. 12in. wide, each with a steam coil or equivalent 6 heated to 400‹ F., and each provided with partitions 5 forming sections from which the vapours pass by pipes 8, 9 to water-cooled receivers 7.
Patent GB-1179175-A (GB)
Title: Excavator, Crane or Conveyor.
Inventor: BARGMANN ERWIN
IPC: F16C23/08
Filed: 1967-01-18
Abstract: 1,179,175. Bearings. KLOCKNER-WERKE A.G. 18 Jan., 1967, No. 2613/67. Heading F2A. [Also in Divisions B8 and E1] A rolling bearing in an excavator, crane or conveyer comprises an upper race 9 with a pivot edge 12 on which an upper carriage 3 may tilt, the pivot edge being nearer the bearing axis than the inner point of contact between race and elements, and the race being yieldable on tilting of the carriage. In Fig. 5, upper race 9 is secured by bolts 16 to carriage 3 and lower race 8 is secured to carriage 2. Bolts 16 are fastened loosely enough so that when carriage 3 tilts downwards at the jib side A race 9 bends, forming spaces 14, in order to increase the number of elements taking load at this side. The upper race may be bevelled to form pivots at both sides and both ends. The upper race may have recesses to facilitate bending.
Patent GB-537629-A (GB)
Title: Improvements relating to clamps
IPC: F41A23/50
Filed: 1940-02-10
Abstract: 537,629. Transporting gun mountings. SUNBEAM TALBOT, Ltd., and WHITE, E. S. Feb. 10, 1940, No. 2615. [Class 92 (i)] [Also in Groups XXXI and XXV] A clamp for securing a gun platform f, gun wheel g or tractor wheel h on a vehicle comprises a base having a pair of side members a supported on legs b bolted to the vehicle c, a framelike clamping lever e of bellcrank form pivoted at n on the base a, and means for securing the lever comprising a hook x, shackle y and toggle z secured to the vehicle c. The gun platform rests on the base a, but the wheels rest on the vehicle c. Springs o secured to the frame a and to the tail e<SP>2</SP> of the lever e normally urge the lever e to the raised dotted-line position shown. Padded stops, p, q on the lever e engage the gun platform f. A bail s trunnioned at t in clamp brackets u engages the tractor wheel in the right-hand position, Fig. 1, or, by means of a depending abutment w, the gun wheel in the left-hand position. A stop m locates the gun platform and guides k centralize it. A safety strap 5 on the lever e is secured to the vehicle.
Patent GB-1464343-A (GB)
Title: Pipe couplings
IPC: F16L19/12
Filed: 1975-01-22
Abstract: 1464343 Pipe coupling T TAKAGI and T TAKAGI 22 Jan 1975 [1 Feb 1974] 2706/75 Heading F2G A pipe connector suitable for small diameter metal pipes, particularly the "double-roll brazed steel" type comprises a screw threaded fastener 7, a sleeve 6, a packing member 3 and a screw threaded body 5 having a tapered bore: the arrangement being such that with the members arranged upon a circumferentially grooved pipe as shown, with packing 3 received within the groove, and with the fastener screw-threaded on to the body, the sleeve and packing are urged into engagement with the pipe, the packing making sealing contact with the pipe, tapered bore and sleeve. Preferably, the part 11 of the sleeve which contacts the bore has a taper corresponding to that of the bore and the other end 15 of the sleeve is in the form of an annular projection which is forced upon contact with the fastener to indent the pipe of flange 12 formed on the sleeve may be included to limit the reception of the sleeve into the bore, and the packing comprises preferably a synthetic rubber "O"-ring.
Patent GB-143952-A (GB)
Title: Improvements in or relating to vehicle spring-suspensions
IPC: B60G11/36
Filed: 1919-02-04
Abstract: 143,952. Edwards, C. K., and Associated Equipment Co. Feb. 4, 1919. Volute springs.-In a vehicle spring suspension of the kind comprising two volute springs G, H superposed between the vehicle body B and the usual leaf spring A, one of the volute springs is of such strength relatively to the other that it is virtually uncompressed until the load completely compresses the weaker spring. In the construction shown, the volute springs are separated by a plate J having flanges J<1>, J<2>, the upper spring G being the lighter, so that the lower spring does not come into operation until the flange J<1> engages the iron plate F. The springs G, H are preferably made from strips of spring steel tapered as shown in Figs. 4 and 2 respectively. The strip for the stronger spring is of uniform width for only about one quarter of its length, as shown from b-b to c-c, while the weaker spring is of uniform width for three-quarters of its length. Both springs are formed with knifeedges at their ends.
Patent GB-805457-A (GB)
Title: An arrangement for the control of the motional actions on a cooling bed and a set of shears located before the cooling bed
IPC: B23D36/00
Filed: 1957-01-25
Abstract: 805,457. Rolling mill plant. SCHLOEMANN A.G. Jan. 25, 1957 [Feb. 4, 1956; Feb. 6, 1956], No. 2726/57. Class 83 (4). In a rolling mill the working cycles of a set of shears 3, Fig. 1, and of the ejectors 19 and deflector 26 of a cooling bed 2 are controlled from the movement of the rolled stock through a mechanical switch 10 actuated by the stock 1 which transmits control impulses to a thyratron or ignitron valve 12 which through preselected electronic delay apparatus 13 and further electronic switches 16, 21, 24 operates the various mechanisms. The rolled stock 1 passes through rotary shears 3 and is carried through a roller table 4 to a take-up trough 5 of the cooling bed 2 by driven conveyer rollers 6 and the leading end engages and closes the trough contact switch 10 before it enters the trough 5. Preset electronic counters 14 determine the operation of the shears 3 but the time delay is influenced by a length-measuring roller 7 and impulse sender 9 so that the length of stock remains constant at different speeds of travel through the mill. The cut lengths are alternately deflected by the deflector 26 which is similarly controlled from a preselected delay counter 20. The lengths slide alternately over ejectors 19, Fig. 2, or in the trough 5 against the side faces 30 of the ejectors 19 which are raised and lowered under control of a further preselected delay counter 23.
Patent GB-727617-A (GB)
Title: Improvements in an exhaust gas turbine driven supercharger assembly for internal combustion engines
IPC: F02C6/12
Filed: 1951-07-11
Abstract: 727,617. Centrifugal fans. SOC. D'ETUDES DE MACHINES THIRMIQUES. July 11, 1951 [July 19, 1950], No. 2757/53. Divided out of 16452/51. Classes 110 (1). An exhaust gas turbine-driven supercharger for an internal-combustion engine has a blower body comprising at least one volute casing with a flared outlet pipe and grid means at the end of said pipe. The grid means may be a bank of cooler tubes. The turbine driven supercharger shown, Fig. 1, comprises a vertical shaft 1 journalled in bearings 2, 3. The shaft 1 carries two blower wheels 4, 5 to which air is supplied through a port 6 which acts as a silencer. The blower body comprises two volutes 8, Fig. 2, which are flared to a considerable extent, leading to two members 10 which direct the air to the inlet end of the second blower wheel 5. The members 10 are fitted with a grid of rods 11 which is is stated prevent the break-away of the fluid flow from the walls of the flared portion of the volute. The grid may be formed by a bank of cooler tubes.
Patent GB-663273-A (GB)
Title: Improvements in or relating to composite products of rubber and textile material
IPC: C08K5/13
Filed: 1949-02-02
Abstract: Composite products, e.g. belting, formed from cotton fabric coated with rubber and vulcanized, comprise an organic textile component associated with a synthetic rubber, e.g. a polymer of butadiene or chloroprene, or a copolymer of butadiene with styrene, containing a hydroxydiaryl methane, a hydroxytriaryl methane or a halogenated derivative of either of such compounds. These compounds may be the bis-(hydroxyphenyl) methanes, bis-(chlorohydroxyphenyl) methanes, bis - (chlorohydroxy - tolyl) methanes and bis - (trichlorohydroxyphenyl) methanes; a preferred compound is bis-(2-hydroxy - 5 - chlorophenyl) methane.  The methane compound may be added to the rubber in the form of a mixture with camphor, diphenyl or benzyl benzoate, or to a latex in the form of an aqueous dispersion.