baber/WOPTO huggingface dataset:
Patent GB-1376581-A (GB)
Title: Anti-lock control system for vehicle brakes
IPC: B60T8/82
Filed: 1973-03-30
Abstract: 1376581 Anti-skid braking systems TELDIX GmbH 30 March 1973 [30 March 1972] 15483/73 Heading F2F  An anti-skid braking system has a first means controlling brake pressure at the front wheels in dependence on the rotary behaviour of the front wheels, a similar means controlling the rear wheel braking pressure, and means for comparing the said brake pressures or values dependent thereon and preventing a pressure increase at the front if a predetermined relationship between the pressures exists. As shown a dual master cylinder 9 supplies hydraulic fluid to the front and rear brakes in separate circuits, control valves 10 to 13 being arranged in the circuits and operated by control apparatus 14, 15 which receive signals from wheel sensors, and brake pressure measuring devices 16 to 19 are provided between the valves and produce for example a voltage proportional to the brake pressure, these voltages being compared in comparators 20, 21 one for each side of the vehicle. Alternatively pressure switches may be used to produce a signal when the front brakes exceed a relatively high threshold and other switches to produce signals when the rear pressures are below a low threshold, an AND gate producing therefrom a control output signal.
Patent GB-342626-A (GB)
Title: Improvements in moulding presses
IPC: B29C45/70
Filed: 1930-05-20
Abstract: 342,626. Casting and moulding machines with extrusion charging- apparatus. ECKERT & ZIEGLER GES., 124, Eupenerstrasse, Braunsfeld, Cologne, Germany. May 20, 1930, No. 15535. Convention date, April 15. [Class 87 (ii).] A moulding machine in which a two-part mould is assembled and charged by extrusion at each operation, is arranged for working by hand or by compressed air at will. For working by hand, the charging-apparatus and the mould parts are moved towards a fixed ram, but when compressed air is used, the ram is moved towards the fixed mould parts. The two mould parts 38, 39 are moved from the open position shown in Fig. 2, in which the ejecting rod 53 projects through the part 39 for removal of the moulded article, into the closed position shown in Fig. 1 by the operation of an adjustable toggle linkage 50, 51 connected to the fixed abutment 2 at one end and operated by the handle 48. Further movement of the handle in the same direction after the mould is closed, moves the member 36 against the pressure of the springs 40 until the electrically-heated nozzle 29 fits into the opening 43, and when working by compressed air the handle is fixed in this position, but when working by hand the movement is continued so that the members 25, 36 are moved in unison over the fixed ram 23, whereby material from an elevated hopper delivered to the chamber 27 is forced through the nozzle 29 into the mould. The handle then is reversed to open the mould, the members 25, 36 being retracted by the springs during the process. For working by compressed air, the locking nut 22 is removed from the end of the ram and the member 25 is fixed to the abutment 3 by sleeves mounted on the rods 54. The handle 48 is operated to close the moulds and locked with the nozzle 29 abutting against the mould as previously described. The valve-controlling handle 18 then is manipulated to admit compressed air to the cylinder to advance the piston 7 and ram 23 to charge the mould and to retract them again afterwards. The non-working side of the cylinder is in communication with the atmosphere during the forward stroke of the ram. Other details of construction comprise the arrangement of the heating coils round the nozzle 29 so that the material is heated more strongly as it progresses towards the exit and the formation of the ram with a concave spherical end which never penetrates to the heated portion of the nozzle.
Patent GB-572766-A (GB)
Title: A process for the manufacture of aminoacridines
IPC: C07D219/08
Filed: 1941-12-03
Abstract: Aminoacridines free from substituents in the meso-position are prepared by condensing 3-aminodiphenylamine or a derivative thereof not substituted at the 2 and 6 position otherwise than by formyl groups, with formic acid or a mixture of substances giving rise to formic acid under the conditions of the reaction.  The hydrogen-ion concentration should be equivalent to that produced by from 1/4 to 3 molecular proportions of hydrogen chloride calculated on the amine present.  The reaction temperature is preferably between 120-180 DEG C., and the reaction time 1/2 to 3 hours.  In examples: (1) a mixture of 3-aminodiphenylamine and its hydrochloride is treated with anhydrous formic acid and glycerol first at 155 DEG  C. and then at 175 DEG  C.  The product is treated with water containing a little hydrochloric acid and sodium acetate to give 2-aminoacridine; (2) 3 : 41-diaminodiphenylamine is treated with anhydrous formic acid and glycerol as in example (1) to give 2 : 7-diaminoacridine, which is purified by crystallization from pyridine; (3) 2 : 8-diaminoacridine (proflavine) is obtained from 3 : 31-diaminodiphenylamine by the procedure of example (1); (4) 3-nitro-8-aminoacridine is obtained from 4-nitro-31-aminodiphenylamine by the procedure of example (1).
Patent GB-1412294-A (GB)
Title: Photographic emulsions
IPC: G03C1/09
Filed: 1972-04-05
Abstract: 1412294 Photographic silver halide emulsions ILFORD Ltd 5 April 1973 [5 April 1972] 15613/72 Heading G2C Latent image regression in photographic silver halide emulsions, especially in those hardened by halo-trazinyl, halodiazinyl or halo-triphosphatriazine hardening agents, is reduced by the addition of a compound of one of the general Formulae:- herein R 1  and R 2  are each hydrogen, alkyl or aralkyl, either of which may be substituted, allyl, alkoxycarbonyl or aralkoxycarbonyl, any of which may be substituted: X is an anion; n is 0 or 1; x and z are each 1, 2 or 3; Y is a direct link or alkylene of 1-6C; B is S or O; provided that when Y is a direct link at least one of x and z is greater than one. Specified compounds are homocystine, djenkolic acid, and S:S'-ethylene-, -trimethylene-, -tetramethylene-, -pentamethylene- and -hexamethylene-bis-L-cysteine. The hardening agent specified is 4-(2:4-dichloro-1:3:5-triazinylamino)-benzene sulphonic acid, used in conjunction with 1:4-diaza-bicyclo-(2:2:2)-octane.
Patent GB-240393-A (GB)
Title: Improvements in and relating to anti-glare headlight lenses
IPC: F21V9/08
Filed: 1925-06-16
Abstract: 240,393. Tumey, C. H., Nealon, M. D., and Tumey, M. June 16, 1925. Lenses. - A vehicle lamp is provided with a forwardly projecting lens 4 of approximately hemispherical form, to the outer surface of the upper portion 5 of which is applied first a mirror substance such as silver and then an opaque coloured substance so as to reflect upwardly directed rays of light downwardly in front of and, to each side of the vehicle, whilst the lower portion 6 of the lens is left clear to admit of the unobstructed passage of forwardly projected rays of light. The base of the lens is provided with an outwardly disposed flange 7 which serves as a reinforcement and is engaged by the forward edge of the reflector 2 and is held in position on the lamp body 1 by means of a band 8.
Patent GB-167152-A (GB)
Title: Improvements in and connected with electromagnetic chucking devices
IPC: B23Q3/154
Filed: 1921-06-07
Abstract: 167,152. Krupp Akt.-Ges., F. July 24, 1920, [Convention date]. Addition to 148,457. Electromagnetic chucks, according to the parent Specification, are modified to hold split annular pieces of work, for example, piston-rings. The cast-steel casing A is made cylindrical and has a central thickened part A, to which is secured a wrought-iron plate C covering the exciting-winding B and having its outer surface flush with the top of the annular wall of the casing. Secured to the casing by bolts E is a cast-steel cover D, in which are secured, by means of non-magnetic rings F, six pole-pieces G arranged in a circle. The cover and pole-pieces are then turned down to produce annular steps, on which the work is placed and held by the magnetic attraction.
Patent GB-566488-A (GB)
Title: Improvements in and relating to piston packing rings
IPC: F16J9/06
Filed: 1943-09-24
Abstract: 566,488. Piston packing. CARLISLE, J. H. Sept. 24, 1943, No. 15694. [Class 122 (i)] A piston packing comprises split rings 1 expanded in an unrestricted manner and pressed axially into frictional contact with unsplit rings 2 by a compound spring 3a, 3b. The rings 2 act as bearing and centralising rings for the piston and, due to their frictional engagement with the piston walls, also act to clamp such lateral movement as is permitted by the small clearance between the inner periphery of the rings and the piston.
Patent GB-584459-A (GB)
Title: A manual control box for initiating the operation of a fire extinguishing system
IPC: A62C99/00
Filed: 1944-08-17
Abstract: 584,459. Electric switch cases. CARDOX (GREAT BRITAIN), Ltd., (Cardox Corporation). Aug. 17, 1944, No. 15740. [Class 38 (v)] A manual control box for initiating the operation of a fire-extinguishing system comprises a hollow body 5 in which is mounted a pushbutton switch 15, the operating member 16 of which projects through a screen 18. A hinged cover 10 carrying a pivoted lever 33 has the lower portion of an opening defined by edges 26, 27, 28 closed by transparent frangible sheet 31 supported at its vertical edges by strips 32. The lever 33 consists of a finger-gripping portion 38, which normally closes the upper portion of the cover opening and two branches 35 which terminate in the hinges 34 and have projections 43. When the lever is pulled the projections shatter the transparent plate the fragments of which 'are swept forward by a bifurcated plate 45, and exposes the operating member 16. A flange 40 prevents the lever from swinging backwards in the box and a ball-detent 41 prevents it from accidentally opening. An indicator lamp is mounted in a housing 23 on the top of the box. In a modification, Fig. 6 (not shown), the lever pivots are mounted below the edge 27 and the bifurcated plate is adapted to fracture the transparent plates. In this modification means are employed to render the box waterproof.
Patent GB-593941-A (GB)
Title: Improvements in or relating to driving means for the rear wheels of motor bicycles
IPC: B62M9/00
Filed: 1945-06-20
Abstract: 593,941. Ratchet clutches. BALLAMY. L. M., and SHEEPSHANKS, R. H. June 20, 1945, No. 15748. [Class 80(ii)] [Also in Group XXXI] A free wheel device suitable for incorporation in the rear wheel of a motor-cycle comprises a driven gear 22 concentric with the rear wheel having a cylindrical recess in which is an arcuate member 35, e.g. of cast iron, frictionally engaging the inner wall 41 and anchored at one end only by a knuckle joint 33 to a triangular member 30 fast with the rear wheel, the other two arms 37, 38 of the triangular member serving to guide the arcuate member 35. The whole mechanism runs in oil. When the gear 22 is driven, the member 35 tends to expand and grips the wall 41 and so transmits the drive to triangular member 30. On the over-run, member 30 pulls member 35 away from the wall 41 and no drive is transmitted. Specification 562,169, [Group XXXI], is referred to.
Patent GB-273481-A (GB)
Title: Improvements in the manufacture of starch
IPC: C08K3/00
Filed: 1926-06-23
Abstract: 273,481. Nanji, D. R. June 23, 1926. Starch. - Solid starch after purification and drying, is mixed with a quantity of alkaline agent such as alkali carbonate, hydroxide bicarbonate or borate, not greater than 0.3 per cent by weight of the starch, so that the product is substantially neutral in reaction. In a preferred procedure, the amylaceous material is washed and, if necessary, digested with acid, and made into a cream with a 1 per cent solution of hydrochloric acid. The mixture is oxidized with a potassium permanganate or dichromate solution, and the excess of oxidizing agent removed by sulphurous acid or bisulphites. After washing, drying and sieving, the small amount of alkaline agent is added as above stated. The starch so produced gives limpid, neutral solutions in water, whose viscosity varies inversely as the quantity of alkaline agent used. It may be used in the sizing and finishing of textiles and paper. The Provisional Specification describes the addition of a suitable and very small amount of alkaline agent which is exemplified at 0.1-1 per cent by weight of the starch.
Patent GB-844217-A (GB)
Title: Improvements in or relating to apparatus for testing soil moisture
Inventor: JR WILLIAM JOEL TURNER
IPC: G01N27/04
Filed: 1957-05-17
Abstract: 844,217. Electric indicating systems. AMES CO., W. R. May 17, 1957, No. 15811/57. Class 40 (1). The moisture content of soil is measured by means of a stake which may be inserted in a tapered hole in the ground and which consists of a number of spaced conductivity measuring cells each having a pair of electrodes in a moisture-absorbing material. As shown (Fig. 2), the stake consists of a central insulating tube 15 on which are the cells 12 spaced from each other by spacers 14 and insulating rings 13. Each cell consists of a pair of ring-shaped electrodes 19, 20 mounted on an insulating sleeve 21 which is secured to the core 15. The electrodes are surrounded by an hygroscopic material which may be gypsum. The spacing material may also be gypsum. Connections to the electrodes are made by a multi-core cable which enters the central tube through a screwed cup 25 and the individual cores of which are led to the appropriate electrodes through a longitudinal slot 16 in the central tube. A shaped end piece 28 is also provided. In a further embodiment (Figs. 4 and 5, not shown) the electrodes consist of concentric cylindrical meshes and the spacers of polystyrene making insulating elements 13 unnecessary. The resistance of the individual cells is measured by the arrangement of Fig. 6 in which a part of the output of oscillator 59 is tapped by potentiometer 61, voltmeter 63 being connected in circuit to show that the output is the same and is then applied through an ammeter 64 to the conductivity cell 12 selected by switch 67. Ammeter 64 and voltmeter 63 may be incorporated in a compound instrument with a single needle.
Patent GB-509527-A (GB)
Title: Improvements in telephone systems
IPC: H04Q5/24
Filed: 1938-05-27
Abstract: 509,527. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd., and SCOWCROFT, J. May 27, 1938, No. 15832. [Class 40 (iv)] A reverting call relay set for two-party lines applies ringing current to the wanted party's bell alternately with battery over a relay to the line so that if the call is abandoned the exchange apparatus is released, whereas if it is answered a ring trip relay is operated and the set remains associated. When the set shown is taken into use, relays A, L pull up over the loop and release relay B energizes J and connects R to wire D which is alternately earthed and dead for ¥ second periods. Relay R on operating cuts off A, L and applies ringing current to the negative line to which both bells are normally connected and a ringing tone leak condenser to the positive line. RH operates in the ringing circuit and energizes RC which locks. On the relapse of R, relays A, L are connected up again and if the call has been abandoned relay B falls and releases the connection. If not, ringing proceeds until the called party replies, whereupon relay RH, since both bells are now disconnected, fails to pull up on the operation of R and relay F replaces L by a further winding of the feed relay A and applies a booster metering impulse to the p-wire at the same time releasing J, the relapse of which terminates the impulse. Discrimination between the two meters is controlled by causing one party's hook-switch to apply a momentary ground to a speaking wire. If the set is seized by a non-party subscriber, RH fails to operate at all and the first operation of R energizes NU which sends back NU tone. NU tone is given similarly if the wanted party's bell is out of order.
Patent GB-754028-A (GB)
Title: Production of erythromycin by growth of an erythromycin-producing microorganism
Filed: 1954-05-28
Abstract: Erythromycin is produced by growing an erythromycin-producing-micro-organism in a substrate medium containing a water-soluble amide of propionic acid.  Specified are propionamide and the mono- and di-N-alkyl substituted propionamides wherein the alkyl contains up to four carbon atoms, e.g. methyl, ethyl, n-propyl and n-butyl.  The amide is used in quantities of 0.05 to 1 per cent of the substrate medium.  The pH of the medium is 6.0 to 7.5, and preferably 6.5.  The temperature is 25 DEG  to 37 DEG C., and preferably 26 DEG  to 30 DEG  C.  The medium is preferably an aqueous medium containing 0.5 to 10 per cent carbohydrate, 0.5 to 5 per cent nitrogen and up to 1 per cent nutrient salts.  Specified carbohydrates are starch, dextrose, sucrose, dextrin, molasses, brown sugar and maltose; nitrogen sources are corn steep, soya bean meal, distillers' solubles, casein, amino acid mixtures, peptones, brewers' yeast, peanut granules and peanut meal, nitrates and ammonium salts; nutrient salts are those providing sodium, potassium, calcium, phosphate, chloride and sulphate ions, together with the trace elements cobalt, magnesium, iron and manganese.  A buffer such as calcium carbonate may be present.  Specification 708,159 is referred to.
Patent GB-1067065-A (GB)
Title: Improvements in or relating to the treatment of keratinic fibres
Inventor: KALOPISSIS GREGOIRE
IPC: A45D7/06
Filed: 1964-04-16
Abstract: A composition for treating keratinic fibres comprises an aqueous solution of a polymer containing thiol groups and of an organic disulphide. Preferably the polymer containing thiol groups has the general formula <FORM:1067065/C3/1> in which R is an alkylene radical, preferably of 2 to 4 carbon atoms, which may be unsubstituted or substituted by alkyl of 1 to 4 carbon atoms, carboxyl or carbalkoxy; R1 is hydrogen or alkyl of 1 to 4 carbon atoms; R11 and R111, which may be the same or different, each represents hydrogen, alkyl of 1 to 4 carbon atoms, phenyl or alkoxy of 1 to 4 carbon atoms; and n is an integer greater than 1 and less than 25 obtained by the process described in Specification 1,002,455. The disulphide is of the formula R1SSR2 in which R1 and R2 which may be the same or different, each represents an alkyl radical of 1 to 4 carbon atoms having a water-solubilizing substituent.  The composition may also contain ammonia or an organic amine.ALSO:A method of treating keratine fibres comprises (a) applying to the fibres an aqueous solution of a polymer containing thiol groups and of an organic disulphide, said polymer and said disulphide being such that they are capable of reacting together under the conditions of use, to reduce said disulphide to the corresponding mocaptan and to oxidise said polymer to the corresponding polysulphide; (b) shaping the keratinic fibres after reduction of their disulphide linkages by said mercaptan is substantially complete; (c) allowing said reduced linkages to oxidise to the disulphide form.  The polymer is preferably that described in Specification 1,002,455 (see Division C3).  The solution is preferably applied at a pH of from 8.5 to 9.5. Hair is permanently waved to applying the solution to the locks of the hair, winding the locks of hair on rollers, again impregnating the locks with the solution, leaving the air rolled while the solution reacts, removing the hair from the rollers, and rinsing and drying the hair.  The rollers in which the hair is wound are preferably heated.  The solution may also contain swelling and penetrating agents.
Patent GB-515230-A (GB)
Title: Improvements in piston and like packing rings
IPC: F16J9/14
Filed: 1938-05-28
Abstract: 515,230. Piston-rings. OUBRIDGE, W. A. May 28, 1938, Nos. 15975 and 19624. [Class 122 (i)] Relates to piston and like packing rings of the type which are prevented from radial expansion by the provision of terminal interfitting means such as, for example a tonque a', Fig. 1, entering a groove b' and consists in constructing the outer fitting means of such curvature as to be eccentric to the ring itself. Various forms of interfitting means may be provided. In one construction a pair of pegs a<2>, Fig. 4, are provided on one end ,of the ring for engagement with a groove b<1> in the other. The rings may be multiple layered and the interfitting tongue and groove or like construction may be of dovetail section.
Patent GB-1187919-A (GB)
Title: Flip-Flop.
Inventor: SCHUBERT GUENTER
IPC: B60Q1/38
Filed: 1968-04-03
Abstract: 1,187,919. Transistor pulse generator. ZENTRALLABORATORIUM ELEKTROGERATE DER VVB ELEKTROGERATE. 3 April, 1968, No. 15989/68. Heading H3T. [Also in Division G4] A free running flip-flop is formed from a Schmitt trigger having two transistors Ts1, Ts2, and a time constant C, R3 in a feedback from Ts2 emitter to Ts1 base. A further transistor stage V may be included to improve sensitivity; otherwise the points A, B are directly connected. The output of the Schmitt trigger passes through a diode D1 to a power transistor Ts3 which operates for example the flashers L2, L3 of a motor vehicle by means of a switch S2. When the switch S2 is unoperated, a diode D2 which is reverse biased during flasher operation, is conductive so that transistor Ts3 acts as a low impedance path in the emitter circuit of Ts2 to increase the frequency of operation of the flip-flop; this provides almost immediate illumination of the flasher lamp upon closure of S2, this frequency falling upon such closure to about 1 c/s. In operation, from a condition where Ts1 is non-conductive, and Ts2 is conductive, the capacitor C charges through R3 at a rate determined by adjustment of the latter, towards the relatively negative potential of Ts2 emitter. When a sufficiently low potential is reached the transistor Ts1 conducts and Ts2 is cut off. The capacitor now discharges through R3, R4, R5 until the transistors switch back. A daylight-sensitive device to operate parking lights includes a photo resistor R1 which with R2 provides a bias potential for Ts1 base when a switch S1 (a, b, c) is changed over. The lamp L1 is energized by transistor Ts3 when the threshold is reached as set by R2.
Patent GB-561379-A (GB)
Title: Improvements in or relating to the centrifugal moulding of concrete products
IPC: B28B21/30
Filed: 1942-11-12
Abstract: 561,379. Centrifugal moulding of concrete poles &c. HUME PIPE & CONCRETE CONSTRUCTION CO., Ltd., and PLUMMER, T. H. Nov. 12, 1942, No. 16011. [Class 87 (ii)] The mould g is supported by driving chains a which are prevented from moving horizontally by one or a pair of fixed, but preferably adjustable, jockey rollers f. The rollers are carried by plates n supported on a two-part lengthwiseadjustable bar b secured at its base to a rail j and provided at its upper end with a roller c resting on a rail d. The rollers f may be adjusted horizontally by means of a handle h engaging a screw-threaded part m rigid with the plates o. Specification 205,263, [Class 87 (ii)], is referred to.