baber/WOPTO huggingface dataset:
Patent GB-513313-A (GB)
Title: Improvements in electric-arc welding
IPC: B23K35/36
Filed: 1938-02-07
Abstract: 513,313. Fluxes ; uniting by fusion. ASEA ELECTRIC, Ltd., and FITCH, S. Feb. 7, 1938, No. 3830. [Class 82 (ii)] [Also in Group XXII] A flux of the type used in carbon arc welding is mixed with a vegetable oil such as raw or boiled linseed oil, almond oil, olive oil, rape oil, cotton oil, mustard oil or tung oil, with or without the addition of driers. The mixture may be applied to a filler wire and dried. For welding low carbon iron and mild steel, a flux mixture may consist of one to five parts of raw or boiled linseed oil containing up to 50 per cent. of terebine, and one to five parts by weight of powdered flux. For welding mild steel, sheet iron, cast iron and cast steel, a flux may comprise 1.25 parts of asbestos powder, 1.5 parts of clay, and 1 part each of zirconium silicate, rutile, ferro-manganese and sodium silicate ; about 40 per cent. of the above linseed oil and terebine is added. This flux when used for welding thick plate has added thereto 40 per cent. of linseed oil without drier.
Patent GB-819280-A (GB)
Title: Improvements in sulphonamides
Inventor: MACRAE FLORENCE JUNE
IPC: C07D285/135
Filed: 1957-02-05
Abstract: The invention comprises sulphonamides of the formula <FORM:0819280/IV (b)/1> wherein R is an alkyl group, preferably containing 3-6 carbon atoms, and their preparation by reacting a reactive derivative of methanesulphonic acid such as an ester or halide with a 2-alkyl-5-amino-thiadiazole.  Suitably a methanesulphonyl halide such as the chloride is reacted in the presence of an acid-binding agent such as pyridine.  In an example, the preparation of 2-isobutyl - 5 - methanesulphanamido - 1 : 3 : 4-thiadiazole and the corresponding n-propyl-, isopropyl-, n-butyl-, sec-butyl-, tert-butyl- and n-hexyl-derivatives is described.  Specification 811,522 is referred to.
Patent GB-693621-A (GB)
Title: Improvements in or relating to electrical timing devices
IPC: H01H47/00
Filed: 1950-02-15
Abstract: 693,621. Switching systems. GENERAL ELECTRIC CO., Ltd., and LAMBERT, R. A. Jan. 12, 1951 [Feb. 15, 1950], No. 3906/50. Class 38 (iv). A switching system for an X-ray transformer 1, or other iron-cored inductive device, which is intermittently energized for periods of whole numbers of half cycles of the A.C. supply wave, comprises a polarized relay 8, in parallel with the transformer, for sensing the polarity of the remanent magnetic flux in the core after each period of energization, and a change-over relay 14, 17, 18 (controlled over contact 13 of relay 8) for ensuring that the first half-wave of any period of energization is of opposite polarity to that of the last half-wave of the preceding period of energization. Polarization of the relay 8 may be effected by passing through the relay D.C. obtained over a rectifier 11 from a transformer 12. The contactor 4, 5 for switchin the primary circuit of the transformer 1 is controlled by the timing and phasing circuit 7 described in Specification 693,042. The circuit 7 is energized from a transformer 6 over the change-over contacts 17, 18 of relay 14.
Patent GB-747487-A (GB)
Title: A process for producing on fibres of acetyl cellulose or of a linear polyamide or polyurethane dyeings fast to cross-dyeing
IPC: D06P1/12
Filed: 1953-02-13
Abstract: Azoic dyeings, fast to cross-dyeing, are produced on acetyl cellulose, linear polyamide and polyurethane fibres by applying an aqueous solution of (1) an amine of the formula <FORM:0747487/IV(c)/1> in which the benzene ring "a" may contain further substituents such as an alkyl, alkoxy or aryloxy group or a halogen atom, X is -SO2- or -CO- and R1 and R2 are hydrogen or alkyl, aralkyl, aryl or hydroaromatic radicals, except that neither R1 nor R2 must be hydrogen if the group <FORM:0747487/IV(c)/2> is ortho to the amino group, and when R1 and R2 are both alkyl they may form with the nitrogen atom a heterocyclic ring, and (2) a coupling component comprising an alkali metal compound of an arylamide of 2 - hydroxy - carbazole - 3 - carboxylic acid or of 3 - hydroxy - diphenylene oxide - 2 - carboxylic acid or of 3 - hydroxy - diphenylene sulphide - 2 - carboxylic acid, effecting diazotization on the fibre and developing the dyestuff in a hot bath.  In an example cellulose acetate yarn is treated in an aqueous bath at 75 DEG C. containing 1 - amino - 2 - methoxybenzene - 5 - carboxylic acid piperidide, the sodium salt of 1 - (21 - hydroxy - carbazole - 31 - carboylamino) - 4 - chlorobenzene, monoethanolamine, sodium chloride, ammonia and the condensation product obtained from oleic acid chloride and albumen decomposition products, preferably lysalbic acid, according to Specification 413,016, diazotization is effected with acidified sodium nitrite solution and the dyeing developed with hot aqueous sodium acetateoleylmethyltaurine solution.  Lists of other suitable amines and coupling agents are given.  Specifications 511,432 and 512,864 also are referred to.
Patent GB-808097-A (GB)
Title: Parking brake system for tractors and the like
IPC: B60T13/10
Filed: 1957-02-07
Abstract: 808,097. Vehicle brakes. CATERPILLAR TRACTOR CO. Feb. 7, 1957 [ Nov. 27, 1956], No. 4215/57. Class 79(5) [Also in Group XXXIV] In a parking brake arrangement for a vehicle e.g. a tractor as shown, the cam shaft 18 of an internal shoe-drum brake fitted to the rear wheel of the tractor is rotated for actuation of the shoes against the drum 13 by a lever 17 connected to a pneumatic brake cylinder 14 to which air under pressure is applied through pipe 15 when pedal-actuated foot valve (not shown) is actuated. Rotation of brake cam shaft 18 in the brake applying direction advances ratchet bar 22 inwardly of housing 23 and when it is desired to lock the brake in the applied position, hand brake lever 33, situated adjacent the driver's seat, is moved upwardly to effect engagement of pawl 26 with ratchet 22. An expansion link comprising a spring 38 compressible in its chamber by an enlarged end 39 on a portion of rod 30 enables slight reaction of the toothed pawl 26 after it is in its engaged position so that should the operator accidently depress the brake pedal when the parking lock has been set, the ratchet bar 22 may be further advanced to the housing 23 so that the ratchet mechanism is not damaged. A modified arrangment is shown and described in the Specification wherein the ratchet bar and toothed pawl arrangement are replaced by a link and pivoted plate arrangement.
Patent GB-1456244-A (GB)
Title: Brake adjusters
IPC: F16D65/56
Filed: 1973-01-27
Abstract: 1456244 Spot-type disc brakes GIRLING Ltd 25 Jan 1974 [27 Jan 1973] 4278/73 Heading F2E An automatic brake slack-adjuster comprises a screw-thread connection between a first non- rotatable member 14 and a second rotatable member (19, Fig. 1 or 51, Fig. 2) having a common thrust axis and a friction ring 37 splined to the second member and spring urged against a stationary surface 39 to inhibit rotation of the second member, the latter (19 or 51) being axially movable (by the splining) relative to the friction ring 37, the latter being isolated from knockback forces. In Fig. 1, thread 18 between spindle 14 and nut 19 is non-reversible; a reversible screwthread connection 29 is provided between nut 19 and a fourth member or annulus 26, that is urged to the right by a spring washer 32 to bring friction clutch surfaces 30, 31 into contact. Spindle 14 has a non-circular connection with a key plate 20. During hydraulic operation, a non-rotatable piston 12 is moved to the left while spindle 14 is urged to the right; a clearance between a surface 36 on nut flange 33 and friction ring 37 is taken up and at a relatively low pressure spring 41 yields, permitting separation of friction surfaces 38, 39, but the axial clearance at the screw-thread connection 29 is not fully taken up. Upon lining wear occurring during hydraulic operation, the clearance at 29 is taken up, and thereafter continued leftward movement of annulus 26 (prevented from rotating by washer 32 and clutch surfaces 30, 31) rotates the nut 19 on spindle 14. On release of fluid pressure, the clearance at 29 is now taken up before piston 12 (optionally assisted by a spring at 44) reaches its new rest position, so thereafter surfaces 30, 31 are separated and annulus 26 is rotated along nut 19, the friction at 18 now being too great for rotation of nut 19. During hand brake operation via cam 45 and dolly 47, only nut 19 of the automatic adjuster assembly 24 takes part in force transmission to piston 12. In the simpler arrangement of Fig. 2, the annulus 26 is dispensed with, and the thread connection 52 is reversible. With hydraulic operation and lining wear, axial clearance at 52 is taken up, then friction ring 37 "catches up" with flange 33 on nut 51, spring 41 is compressed, permitting separation of friction surfaces 38, 39 and finally nut 51 is rotated by spring 41 acting through bearing 55, ring 37 and the latter's spline connection with the nut. On pressure release, nut reversal is prevented by renewed contact at 38, 39. In both embodiments, in the rest position, knockback jolts received by the nut via the piston 12 do not dislodge ring 37 from its frictional engagement with container 25 or 53 because of the clearance between flange 33 and ring 37, so ring 37 cannot rotate, and, by its spline connection to the nut, prevents rotation of the latter.
Patent GB-478460-A (GB)
Title: Improvements in or relating to kinematograph projection apparatus
IPC: G03B41/10
Filed: 1937-02-12
Abstract: 478,460. Kinematograph apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 12, 1937, No. 4292. Convention date, Feb. 13, 1936. [Class 97 (i)] In continuous-feed kinematograph apparatus the illumination is provided by at least one artificially cooled high pressure metal vapour discharge tube with narrow linear discharge path so arranged relatively to the condenser system and compensating mirror that the image or images of the discharge path or paths is or are formed in or near the mirror. Preferably no shutter is used, the film gate has a height about double picture height, and the lamps are liquid cooled mercury vapour lamps periodically illuminated. As shown in Fig. 1, the film 4 moving over the gate 3 is illuminated by the lamp 1, the discharge path 6 being parallel to the axis 13 of the compensating mirror 7 oscillated by the cam 9. An image of the discharge path is formed by the condenser 2 on the narrow mirror 7. A number of such lamps may be used with separate condensers as shown in Fig. 4. To avoid flicker without a shutter alternating or interrupted direct current may be used and each picture illuminated twice during its passage across the gate, for example by two lamps as in Fig. 4, illuminated alternately by the alternate half cycles of an alternating current.
Patent GB-414433-A (GB)
Title: Improvements to automatic sheet feeders
IPC: B65H9/14
Filed: 1933-02-13
Abstract: 414,433. Feeding sheets. BACKHOUSE, H. T., 29, Norfolk Road, St. John's Wood, London. Feb. 13, 1933, No. 4294. [Class 100 (i).] In connection with a sheet-feeding apparatus of the kind in which tapes 2 conveys a stream of overlapping sheets 3 to a printing or other machine, accurate registration of the foremost sheet is assisted by reducing the friction between this sheet and the one beneath it during the registration of the sheet by introducing a layer of air between the two sheets. An air pipe 6 with nozzles 7 is carried adjustably on a rod 9 and directs blasts of air in a direction substantially at right angles to the stream. The pipe 6 can be adjusted so as to direct the stream just behind the foremost sheet and to produce components as indicated by the arrows. A considerable part of the air passes under the foremost sheet which can thus move without friction over the next sheet during registration. A pair of rollers 12 is carried by the carriage 11, which supports the pipe 6, and serves to maintain the edges of the sheets in contact with the tapes 2.
Patent GB-500003-A (GB)
Title: Improvements in circuit control arrangements of electro-magnetic switches
IPC: H01H71/16
Filed: 1938-02-11
Abstract: 500,003. Thermal switches. OSBORN, H. J., and SHARP, W. Feb. 11, 1938, No. 4315. Addition to 467,829. [Class 38 (v)] In an arrangement according to the parent Specification wherein a thermal switch controls an electromagnetic switch, the contact arm of the thermal switch comprises or is carried by two bimetallic strips which are arranged in opposition and only one of which is heated by a current. The arrangement compensates for variations of atmospheric temperature and causes a quicker return movement of the contact arm. The bimetallic strips 1, 1a are shaped as shown and arranged one above the other. The fixed ends are fixed to a pillar 2 and their free ends are connected to each other by L-shaped brackets. The strip 1 is extended to carry contacts 3, 4 which co-operate with contacts 5, 6. Specifications 291,494 and 318,950, [both in Class 38 (v)], are referred to.
Patent GB-1455213-A (GB)
Title: Electric isolation device
IPC: G06F1/00
Filed: 1974-01-31
Abstract: 1455213 Switching circuits for AC loads XEROX CORP 31 Jan 1974 [1 Feb 1973 04449/74 Heading H2H [Also in Division H3]  An electrical isolator comprises a triggering device 10, 12, a triac 28 for connecting a load to a supply, a first optical system 14, 16 for transmitting trigger signals from the triggering device to the triac and a second optical system 46, 48 for transmitting a signal, derived from the instantaneous amplitude of the supply, to the triggering device. When the supply voltage crosses zero a light emitting diode 46 is turned off so that a photo-transistor 48 and a transistor 50 are turned off. One of the inputs of a NAND gate 12 is therefore at earth potential so that the output of the gate is high. When a trigger signal is applied to a NAND gate 10, both its inputs are high and its output is low so that a light emitting diode 14 is energized and turns on a photo-transistor 16. A capacitor 20 is charged via a rectifier 18 until a bidirectional switch 24 breaks down and triggers the triac 28. The triac is triggered at each zero crossing to connect the load to the supply. If the trigger signal to the gate 10 is removed, the output of the gate remains high and the diode 14 is not energized thereby preventing triggering of the triac.
Patent GB-935998-A (GB)
Title: Fastening device
Inventor: PAICE CHRISTOPHER LAWRENCE
IPC: F42B15/36
Filed: 1959-02-09
Abstract: 935,998. Clamp fastenings. PYE Ltd. Feb. 8, 1960 [Feb. 9, 1959], No. 4456/59. Class 44. A fastening device for securing two parts 1, 2 together in abutting relationship comprises a lever 5 mounted on a pivot 6 intermediate its ends so that it can pivot relative to one of said parts 2 and having means 5a at one end thereof. for engaging with a surface on the other of said parts to fasten the two parts together, a pivoted member 7 carried by the part 2 and having a cam portion 7b the pivoted member 7 being pivotable between a first position in which the cam portion engages the lever on the opposite side of its pivot to the end provided with the engaging means to hold the lever with the engaging means engaged with surface and a second position in which the cam portion allows the part to pivot to release the engaging means from engagement with the surface and a further member 9 caused to be moved by pivoting of the pivoted member to the second position to engage the lever and positively pivot the lever to disengage the engaging means from the surface. The engaging means is a nose 5a which engages a projection 3a. The cam portion engages the lever with an over-centre action. The member 3 has a finger 10 for engaging the lever 7.
Patent GB-101122-A (GB)
Title: Improvements in Reversing Gear for Metal Planing and like Machines.
Inventor: STIRK JOHN GEORGE
IPC: B23D7/00
Filed: 1916-03-27
Abstract: 101,122. Stirk, J. G. March 27, 1916. Planing.-The reversing - mechanism of a planing- machine, such as an electric reversing-switch H, is operated by dogs F on a wheel C having internal or external teeth meshing with a pinion A on the bull-wheel shaft. The arms G are thus operated at a less speed, and consequently with less shock. The wheel C may be graduated to show the table spoke.
Patent GB-451681-A (GB)
Title: A combined folding table and cabinet
IPC: A47B3/08
Filed: 1935-02-12
Abstract: 451,681. Tent poles. KRAWITZ, M. L., 70, Queens Road, Jesmond, Newcastle-on- Tyne. Feb. 12, 1935, Nos. 4515, 10747, and 27094. [Class 20 (i)] [See also Group XIV] A joint for a folding tent pole has a sleeve A slidable on one member B and hinged to the adjacent member C, the members, when aligned and pushed together, having a socketed engagement to form a rigid joint. An external sliding sleeve D may be used to lock the joint.
Patent GB-225098-A (GB)
Title: Improvements in the heating of rolls
IPC: B21B27/10
Filed: 1924-02-22
Abstract: 225,098. Marks, E. C. R., (Freyn, Brassert, & Co.). Feb. 22,1924. Rolling.-The rolls are heated to the proper working temperature by means of electricallyheated members A, B applied one on each side of a pair of rolls and clamped by bolts 17, 18. Each member comprises flexible jackets 19, 20 adjusted to contact with the rolls by bolts 21 and provided with a lining 26 of asbestos or other heatinsulating material which encloses a plurality of heating elements 27 connected in parallel by conductors 29. In order to distribute the heat as uniformly as possible throughout the periphery of the rolls, the heating elements are more closely spaced in the vicinity of the gaps at the top and bottom of each roll than at the intermediate side portions. In one form of heating element, Fig. 4, the resistance wire is wrapped round a mica strip 30 and enclosed in a coating 32 of refractory cement, the element being secured to its jacket by means of lugs 34. The convolutions of the reactance wire are closer together at the centre of the strip than at the ends so that the heating effect is greater at the middle portion of the roll than at the end portions. The four heating sections C, D, E, F may be connected either in series or in series-parallel, and preferably a double pole two-way switch is connected as shown in Fig. 8, the heaters being first connected in series to heat the rolls gradually so as to avoid excessive internal strains, and the switch being subsequently put over into the series-parallel position to increase the rate of heat supply until the desired temperature is attained.
Patent GB-736118-A (GB)
Title: Improvements in or relating to wedge blocks for pit props and the like
IPC: E21D15/52
Filed: 1953-02-19
Abstract: 736,118. Wedges. HEWITT, H., and HEWITT, J. Aug. 24, 1953 [Feb. 19, 1953], No. 4631/53. Class 89(2). [Also in Group X] Relates to a wedge device comprising upper and lower wedge parts B, C respectively engaged by a central wedge A, the parts B, C engaging one another by slidable vertical guidemembers 9, 10 having lateral projections 11, 13 engaging inclined flanges 5 on the central wedge which can thereby bring the parts B, C together. According to the invention the wedge parts A, B, C are of box cross-section and the walls are formed of metal plates. The wedge device may be fitted in rectangular openings in lower and upper parts of a pit prop.
Patent GB-143959-A (GB)
Title: Improvements in or relating to pneumatic tyres
IPC: B60C19/12
Filed: 1919-03-31
Abstract: 143,959. Wilkes, J. E. March 31, 1919. Jackets and covers. - Overlapping metal plates a are secured to the inner tread periphery of the outer cover, as by rivets c, a canvas liner d being attached by one edge e to the side of the cover, as shown.
Patent GB-285412-A (GB)
Title: Improvements in or relating to lubricating pumps with sight feeds
IPC: F16N13/04
Filed: 1928-02-14
Abstract: 285,412. Etablissements Quervel FrÞres. Feb. 15, 1927, [Convention date]. Auxiliary actuating gear; cam-and-lever actuated pumps; mountings; reciprocating cylinder pumps. -A lubricator comprises a number of pumps arranged in two rows in a container 1, air pistons 2 being stationary and the barrels 8 movable on the pistons by cams 23 and levers 19. During the downstroke of the barrels, the oil enters the spaces 12 through the suction valves 9, and during the upstroke it is forced through the valves 10 and ports 14 and passages 15 in the piston rods into sight-glasses 44 containing water &c. and rods 50 up which the oil travels to the delivery pipes 46. The end of the rod 50 is formed into a spring 51 gripped between the pipe 46 and a member 45 to facilitate removal. The strokes of the pumps are regulated by rods 22 carrying abutments 25 engaging the levers 19. The rods 22 pass through sleeves 29 threaded into sleeves 27 and provided with notches 38 engaging pins 37 on the rods. The rods are adjusted by turning them by means of heads 30, thus causing the sleeve 29 to move axially in the sleeve 27. The amount of the adjustment may be indicated by a screw thread 40 cut on the outer surface of a cylinder 32 carried bv the lock nut 30, the reading being taken with reference to the front edge of a cap 33 carried by the rod. The sleeve 29 has a slot 39 into which the pin 37 is brought when the rod 22 is used to actuate the pump. Each pump is carried by a plate 5 removably mounted on the cover of the container, so that the complete pump may be removed for repair &c. A spring- controlled stop 52 pivoted on to the piston rod may be turned to lift the pump barrel out of engagement with the lever 19.
Patent GB-700611-A (GB)
Title: Improvements in and relating to polymeric products derived from polyisocyanate-modified polyesters
IPC: C08G18/10
Filed: 1952-02-23
Abstract: A substantially linear polyester having an hydroxyl number from 20-80, preferably 40-60, is modified by reaction with a poly-isocyante in a quantity 100 - 600 per cent. in excess of that equivalent to the hydroxyl groups in the polyester, the resulting product then being reacted with a diamine in a proportion equivalent to from at least one quarter to at most all the remaining isocyanate groups.  In general the product is a polyurea intimately associated with a polyester which acts as a plasticizer, the polyurea being cross-linked by reaction with isocyanate.  The initial polyesters are primarily derived from glycols and aliphatic saturated dicarboxylic or hydroxy-acids but small quantities of materials of higher functionality, e.g. trihydric alcohols, and of unsaturated or aromatic acids may be included.  The acid number of the polyesters should be low to avoid carbon dioxide formation.  With low isocyanate content the final products are elastic, higher isocyanate content giving harder, non-brittle products.  By choosing slowly reacting isocyanates and diamines the reaction mixture may be moulded in the liquid phase.  Six examples are given, examples 1-5 describing the modification of glycol - adipic acid and propylene glycol adipic acid esters having hydroxyl numbers about 50 with toluylene and 1.5 naphthalene diisocyanates, the products being reacted with dichlorobenzidine, toluylene diamine and 4.21 diamino - diphenyl, the final products being used to cover automobile steering wheels, condensers and cable joints and for packings, foils and plates. Talcum is used as a filler in example 1.  In example 6 a polyester from adipic acid, glycol and trimethylolpropane, having an hydroxyl number 60, is modified with toluylene diisocyanate and the product reacted with dichlorobenzidine.  Other fillers referred to are titanium dioxide, asbestos and mixtures of asbestos with iron powder. Specifications 700,609 and 700,610 are referred to.