baber/WOPTO huggingface dataset:
Patent GB-637380-A (GB)
Title: Improvements in or relating to circuits for controlling the frequency of generated oscillations
IPC: H03L7/107
Filed: 1947-02-06
Abstract: 637,380. Automatic frequency control systems. SMITH, .T. B. Feb. 6, 1947, No. 3515. [Class 38 (iv)] In a system for maintaining generated electrical oscillations in a fixed phase relationship with master oscillations by a control signal, dependent on phase difference, derived from a phase discriminator, the control signal is modified by the output of. the discriminator when a frequency difference occurs to effect rapid frequency correction. Output from a frequency divider 3 supplied from an oscillator 1, e.g. a pulse generator, the frequency, and phase of which is to be controlled, is applied together with the output from a master oscillator 2, e.g. a mains supply, to a phase discriminator 4, e.g. of the type described in Specification 534,749. Output from discriminator 4, amplified by a valve 5, serves to control the frequency of oscillator 1. With only phase deviation a smoothing circuit 6, 7 serves to prevent hunting, but sluggish control which would result from this circuit upon frequency deviation is avoided by a relay 15 which is energized through a rectifier 14 from the beat frequency output of discriminator 4 to short-circuit resistance 6. Integrated feedback by a resistance-capacity network between the junction of resistance 10, 11 and the control electrode of valve 5 is referred to.
Patent GB-419307-A (GB)
Title: Improvements in and relating to photo-electric apparatus
IPC: G08B13/189
Filed: 1933-02-06
Abstract: 419,307. Speedometers. FITZGERALD, A. S., 433, Warwick Road, Wynnewood, Pennsylvania, U.S.A. Feb. 6, 1933, No. 3571. Convention date, Feb. 4, 1932. [Class 106 (iii).] A method of detecting the movement of an object in a field of view, comprises deriving substantially balanced light effects from the field, causing movement of the object to give rise to periodic unbalance between the said light effects, deriving periodic electrical effects from the unbalance and utilizing the said electrical effects to give an indication of the movement or its speed or direction. The field of view 2, Fig. 1, is projected onto two cells 6, 60 over optical paths including a lens 1, prisms 4, 5, 40, 50, two inversely obturated screens 7, 70 and lenses 8, 80. The two cells are connected in a bridge circuit 9 connected to the input of a valve 15 whose output includes a relay 17. A moving object 3 in the field produces fluctuations in the currents from the cells due to the screens 7, 70, the fluctuations being out of phase and causing the bridge 9 to be unbalanced to actuate the relay 17. The screens of Fig. 1 will enable movement of an object in any direction to be detected, while the screens of Fig. 2 will only enable movement at an angle to the obturating lines to be detected. By replacing the relay 17 by a frequency measuring instrument, the speed of the moving object may be measured. Using screens as shown in Fig. 4, the direction of movement will correspond to an increasing or decreasing frequency. Using two systems of the type shown in Fig. 1, the screens 7, 70 being replaced by the screens of Fig. 2 in one, and by screens having horizontal obturating lines in the other, the electric output of each system will be proportional to the components of the movement of the object parallel to two axes at right angles, and the direction in space of the movement may be deduced. Ultra-violet and infra-red radiation may be utilized instead of light and the cells may be replaced by thermoresponsive devices.
Patent GB-393904-A (GB)
Title: Process for applying carbon paper pigment to the surfaces of carbon sheets and forms
IPC: B41L1/00
Filed: 1933-02-06
Abstract: 393,904. Carbon papers. BURGMER, (nee HEINRICH), 1., 1, Roberstrasse, Elberfeld, Wuppertal, Germany. Feb. 6, 1933, No. 3609. Convention date, Feb. 15, 1932. [Class 100 (iv).] A process for applying the transfer coating to carbon paper and forms, especially to those having separated patches of carbon, comprises applying the wax or other matrix in a warm condition either before or after the pigment, consisting chiefly of soot, which is applied cold by a printing-device. If the matrix is applied before the pigment, as by passing the paper through a wax bath, the wax may be cooled by a guide-roller before the pigment is applied. The wax and pigment layers may be united by reheating and pressing the paper, or the two coating operations may immediately succeed each other. The matrix, which is preferably colourless, may be applied all over the paper or only on the spots to be pigmented, and the blank spaces may bear printed or written matter.
Patent GB-1172707-A (GB)
Title: Injection Device for the Moulding of Plastics Materials.
Inventor: NOUEL ROBERT ANGE MARIE
IPC: B29C45/53
Filed: 1967-01-24
Abstract: 1,172,707. Injection moulding machines. R. A. M. NOUEL. 24 Jan., 1967, No. 3622/67. Heading B5A. In an injection moulding machine an injection ram 3 has a central bore in which is situated a feeding screw 7 which is both rotatable and axially reciprocable. When injection is due to take place, a closure member 37 is operated to align channels 38, 39 and body 17 is pushed forwardly when fluid is admitted to a chamber 20 through a line 23 and plastics material held in an injection chamber 4 is injected, and a non-return valve 26 is seated firmly on the conical seat provided by the ram 3. In this case, pressure of material compacted by the continuously rotating screws causes the same to retract relative to the ram 3, thereby producing at 25 a reserve chamber which becomes filled with material. Retraction of the screw 7 retracts a piston 16 connected thereto, hydraulic fluid being displaced from a chamber 18 through a pipe 19, which may be throttled in order to keep a light counterpressure on the chamber 25. After injection, the member 37 is closed and fluid is admitted through pipe 19 while the line 23 is connected to a sump. Ram 3 moves backwardly while screw 7 forces material through grooves 29 and an annular space 30 into chamber 4, the screw continuing to feed material thereto when chamber 25 is empty. Chamber 4 is filled with a quantity of material slightly in excess of the volume required for moulding, this quantity being determined by an electric switch.
Patent GB-660230-A (GB)
Title: Improvements in or relating to variable gear mechanism for cycles
Inventor: YAPP THOMAS ALFRED
IPC: B62M9/124
Filed: 1949-02-10
Abstract: 660,230. Change speed gearing for cycles. HERCULES CYCLE & MOTOR CO., Ltd. Feb. 9, 1950 [Feb. 10, 1949], No. 3638/49. Class 80 (ii) A cycle gear of the Derailleur type consists of a fork plate 12 slotted to receive the rear wheel spindle 13, upon which the rear wheel carries three chain sprockets 14-16, engaged by the driving chain. The shifting of the chain from one sprocket to another is effected by a grooved roller or pulley 18, mounted on a spindle 19 slidable in the sleeve 20 fixed to the rigid bracket 21, the other end of this bracket being clamped by the wheel spindle nut 23. The axial sliding of the pulley 18 is motivated in one direction by a compression spring 31 and in the other by a head 27, rotatably anchored to the spindle 19, and having attached to it one end of a chain 28 connected through a Bowden cable to a controlling lever. To the spindle 19 is secured, by a locking nut 35 and tongue 36 in a keyway 37, an arm 34 having fixed to its other end a screwed spindle 38 clamped in the arm by a lock-nut 39. The spindle 38 carries a grooved roller or pulley 40 serving to tension the driving chain. The spring force on the arm 34 for tension is provided by the spring 31 of which one end is engaged with a flanged disc 25 locked to the bracket 21, and the other with a peg 41 on the arm, in such a way that the spring acts in torsion. The outer end 42 of the spring is cranked radially and can be inserted in one of a series of angularly spaced notches in the flange of the disc 25 so that the loading of the spring may be adjusted. The grooved rollers or pulleys 18 and 40 are identical, each having two spaced peripheral flanges 45, 45, leaving a groove of a radial depth substantially equal to the radius of the rollers of the driving chain, and the width between the flanges being slightly greater than the width of the chain. The outer edges of the flanges 45 are flared slightly in an outward direction to prevent the chain riding up them. In the centre of the groove is a shallow annular rib 46, or alternatively shallow angularly spaced projections corresponding in spacing to the pitch of the chain. The rollers 18, 40 are mounted on ball bearings comprising balls 47 in an internal groove 48 and races 49, 50. The bearings may also be of the needle-roller or other equivalent type.
Patent GB-807343-A (GB)
Title: Improvements in and relating to translation of symbols into electric signals
IPC: G06V30/224
Filed: 1956-02-06
Abstract: 807,343. Ciphering and coding apparatus. REUMERMAN, T., and HELMIG, W. H. T. Jan. 31, 1957 [Feb. 6, 1956], No. 3642/56. Class 146(2) [Also in Group XL(b)] In counter wheels &c. of an indicating mechanism each having a number of symbol fields carrying symbols 1, a spot or spots 3, 4, 5 of radioactive material are applied in recesses to indicate the symbols in code and are translated by a Geiger counter traversed past them.
Patent GB-1042202-A (GB)
Title: Novel ª‰-amino-alkanoic esters processes for their preparation, and compositions containing them
IPC: B65D35/44
Filed: 1964-01-08
Abstract: Novel compounds of the Formula (I), wherein R represents a C1- 5 alkyl group; R1 represents hydrogen atom or a C1- 5 alkyl group; and Y represents a tertiary amino group of the formula -NR2R3 wherein R2 and R3 are the same or different and each represents a C1- 5 alkyl group, or together, with the nitrogen atom, they represent a heterocyclic ring, and acid addition salts thereof are prepared by reacting an a -phenyl-b -tertiary amino-alkanoic acid or a functional derivative thereof with an alkylating agent containing a C1- 5 alkyl group or by reacting an a -phenyl-a ,b -unsaturated alkenoic ester of the Formula (VIII) with an amine of the formula HNR2R3; and, if desired, converting the resulting free base into an acid addition salt thereof. <FORM:1042202/C2/1> <FORM:1042202/C2/2> <FORM:1042202/C2/3> <FORM:1042202/C2/4> <FORM:1042202/C2/5> <FORM:1042202/C2/6> a  - Phenyl - b  tertiary - amino - alkanoic acids of the Formula (V) may be prepared by reacting an acid of the Formula (II) with an amine of the formula HNR2R3.  a  - Phenyl - b  - tertiary - amino - alkanoic nitriles of the Formula (VI) may be prepared by reacting a compound of the Formula (VII) with an amine of the formula HNR2R3.  a  - Phenyl - b  - tertiary - amino - alkanoic anhydrides may be prepared by reacting alkanoic acids of the Formula (V) with an alkyl chloroformate.  Therapeutic compositions useful for the treatment of depressive states, psychosthenia, in convalescence, and for the treatment of physical and/or mental fatigue, in the form of coated or uncoated tablets, powders, granules, capsules, cachets, suppositories, solutions, suspensions, syrups, ampoules or multi-dose containers for oral, topical or parenteral application, comprise compounds of the Formula (I) and their therapeutically acceptable acid addition salts together with an acceptable carrier.
Patent GB-1503623-A (GB)
Title: Method and apparatus for pasting battery plates
IPC: H01M4/20
Filed: 1976-01-30
Abstract: 1503623 Pasting batterv plates GATES RUBBER CO 30 Jan 1976 [31 Jan 1975] 03754/76 Heading D1L [Also in Division H1] Thixatropic electrochemically active paste is applied to a continuous grid substrate 34 having interstitial pores by discharging at 10 a ribbon of paste 23 onto a non-hygrascopic web 16, passing the pasted web and grid substrate into the nip of compressing rollers 27 whereby the paste is forced into the grid substrate, the web being stripped from the pasted substrate at 40. The web may be a paper sheet wetted with water at 20. A second web 44 may also be employed to prevent the substrate adhering to the rolls 27 or the lower roll may be internally pressurized with water to prevent adhesion to the substrate. Paste density and thickness may be measured at 32 and the supply of paste controlled accordingly.
Patent GB-844287-A (GB)
Title: Hydrocarbon separation process
IPC: C10G25/03
Filed: 1957-02-04
Abstract: <PICT:0844287/IV(b)/1> In separating a hydrocarbon from another hydrocarbon of different configuration mixed therewith by means of a molecular sieve in a fixed bed the adsorbed hydrocarbon is desorbed and the sieve regenerated by a hydrocarbon having a similar configuration to that adsorbed but containing one or two carbon atoms more or less. The process may be carried out without a change in temperature between adsorption and desorption.  Referring to Fig. 1, a naphtha e.g. of boiling range 150-310 DEG F. is fed to the still 4 where it is separated into a light fraction containing C6 and C7 hydrocarbons and boiling between 150 and 235 DEG F. which is removed by line 6, and a heavy fraction containing C8 and C9 hydrocarbons and boiling between 235 and 310 DEG F.  The light fraction is passed through the molecular sieve which preferably has a pore size of 5  in the zone 10, preferably as a vapour at 100-500 DEG F., 200-400 p.s.i.g. and 0,2-10 v/v/hr.  The normal C6 and C7 paraffins are adsorbed and the effluent passes to the still 14.  When the sieve no longer adsorbs, the heavy fraction is passed in by line 8 under similar conditions. The normal C8 and C9 paraffins desorb the C6 and C7 paraffins and are themselves adsorbed.  The effluent containing normal C6 and C7 paraffins and C8 and C9 non-normal hydrocarbons pass to the still 18 where they are separated.  When desorption is complete the cycle is again reversed, the effluent now being normal C8 and C9 paraffins and C6 and C7 non-normal hydrocarbons which are separated in still 14.  In another embodiment adsorption is not carried to completion but only 75-80% of the sieve is saturated and similarly with desorption.  Olefins may also be separated using a molecular sieve having a pore size of 5  and aromatic hydrocarbons may be separated using a sieve of pore size 8-15 .
Patent GB-401330-A (GB)
Title: Improvements in or relating to pit props
IPC: E21D15/28
Filed: 1932-02-09
Abstract: 401,330. Mine props. TOUSSAINT, H., 23, waldmannstrasse, Lankwitz, Berlin, and BOCHUMER EISENHUTTE HEINTZMANN & CO., GES., Bochum, both in Germany. Feb. 9, 1932. No. 3892. [Class 20 (ii).] Mine of the type in which one member is received in the other and a wedge with friction pad is disposed axially of the prop between the prop members, have the wedge formed of metal member 2 is tapered and is received in the hollow members 1 and a metal wedge 3 provided with friction packing 17 adjusts the height of the prop. Grooves 7 may be provided in one face of the wedge to receive the end of a lever 8 whereby the wedge may be released. The wedge may be single or double and may be screw or crosswedge adjusted with friction packing disposed on both sides of the inner member. A separate sleeve may be secured to the end of the outer member which receives the inner member, and in another modification balls 41 may be placed at the rear of the wedge to facilitate its movement. The Provisional Specification describes also screw and lever means for causing relative movement between the prop members.
Patent GB-284475-A (GB)
Title: Improvements in or connected with automatic electric elevators, lifts and hoists
IPC: B66B1/44
Filed: 1927-02-11
Abstract: 284,475. Medley, C. P. Feb. 11, 1927. Electric push-button systems.-In push-button electric lifts of the kind in which the switch mechanism controlling the movement of the lift is adjusted in accordance with the load in order to ensure that the lift is stopped accurately at the landings, the thrust-bearing e carrying the worm c by means of which the lift is actuated from the motor a is used for controlling the initial position of the selector cams controlling the switch arms, so that these cams are set forward or backward in accordance with the thrust on the bearing which varies with the load on the lift. A bell-crank lever f attached to the thrustbearing e is pivoted to the piston-rod by a hydraulic cylinder h. A pipe j connects the cylinder h to a cylinder i which is mounted on the shaft k of the selector switch mechanism by means of a bracket i', Fig. 3, to turn with the shaft. The shaft k is rotated in the usual manner so that it turns slightly less than one rotation during the travel of the lift. The selector cams m are secured to a sleeve rotatably mounted on the shaft k. The piston rod of the cylinder i is linked to an arm on the sleeve l. If the thrust on the bearing e varies, the piston of the cylinder i will be moved and the sleeve l rotated, thereby advancing or retarding the time of contact of the cams with the contact arms n of the selector switch mechanism. The hydraulic cylinders may be replaced by a pair of solenoids.
Patent GB-607544-A (GB)
Title: Improvements in and relating to absorbable sutures
IPC: A61L17/06
Filed: 1946-02-07
Abstract: A suture consists of a cellulose thread oxidized sufficiently to cause its reduction to zero strength at the pH of the body tissue, i.e. 7.3-7.5 in not less than 5 days and not more than 36 days. Suitable oxidizing agents are nitrogen dioxide and periodic acid. With the former, the primary alcohol group is converted to a carboxyl group; with the latter, there is produced a scission of the glucose ring to form aldehyde groups from the secondary alcohols.  In employing nitrogen dioxide, a measured quantity (dependent on the degree of oxidation desired) is distilled from a supply over phosphorus pentoxide to a cooled measuring tube, and this quantity is then transferred to a vessel containing cellulose thread supported on projections therein and a quantity of phosphorus pentoxide at the bottom.  After say 64 hours, the oxycellulose thread is washed and dried.  An oxidation of say 15 to 55 per cent is suitable.  When oxidation is effected by periodic acid, the degree of oxidation is controlled by the strength of the solution and reaction time. Strengths of .224N, .108N and .096N at 50 DEG  C. are suitable.  The last traces of acid may be removed by washing with sodium thiosulphate solution.  The thread treated may be loosely wound on glass or stainless steel reels.  Threads of linen, cotton, or cellulose which in manufacture has passed through a cellulose acetate stage, are suitably employed.ALSO:A suture consists of a cellulose thread oxidized sufficiently to cause its reduction to zero strength at the pH of the body tissue, i.e. 7.3 to 7.5 in not less than 5 days and not more than 36 days.  Suitable oxidizing agents are nitrogen dioxide and periodic acid.  In employing nitrogen dioxide, a measured quantity (dependent on the degree of oxidation desired) is distilled from a supply over phosphorus pentoxide to a cooled measuring tube, and this quantity is then transferred to a vessel containing cellulose thread supported on projections therein and a quantity of phosphorus pentoxide at the bottom.  After say 64 hours, the oxycellulose thread is washed and dried.  An oxidation of say 15 to 55 per cent is suitable.  When oxidation is effected by periodic acid, the degree of oxidation is controlled by the strength of the solution and reaction time.  Strengths of .224N, .108N and .096N at 50 DEG C are suitable.  The last traces of acid may be removed by washing with sodium thiosulphate solution.  The thread treated may be loosely wound on glass or stainless steel rods.  Threads of linen, cotton or cellulose which in manufacture has passed through a cellulose acetate stage are suitably employed.
Patent GB-473537-A (GB)
Title: Improvements in and relating to alternating current electric generators having permanent magnet excitation
IPC: H02K21/04
Filed: 1936-02-10
Abstract: 473,537. Magnetos. SIEMENSSCHUCKERTWERKE AKT.-GES. Feb. 10, 1936, No. 4016. Convention date, Feb. 11, 1935. Drawings to Specification. [Class 35] Exciting.-The greater part of the excitation of an alternating current generator is provided by a permanent magnet rotor, but means are provided for supplementing this automatically so as to maintain the terminal voltage in spite of the demagnetizing effect of the armature reaction, or to increase the terminal voltage when the generator is loaded. This is effected either (a) by means of a winding on the rotor supplied with direct current, the direction of which can be automatically reversed if necessary under conditions discussed in the Specification, or (b) by means of adjustable wattless current apparatus in the stator circuit, such as condensers, which may be combined with adjustable chokes. The rotor may be provided with damping windings to check demagnetization.
Patent GB-831344-A (GB)
Title: Agricultural chemical compositions
Inventor: BARKER CHRISTOPHER HOLROYD
IPC: A01N25/10
Filed: 1957-02-06
Abstract: Pesticidal, herbicidal, fungicidal and plant growth regulant compositions contain 0.01-2% based on the active ingredient of a polymer or copolymer of vinyl pyrrolidone, preferably having a molecular weight in the range of 10,000 to 100,000.  Wetting and sticking agents &c. may also be incorporated.  Specified active ingredients are fungicides: copper oxychloride, cuprous oxide; pesticides: 1 : 1 : 1-trichlor-2 : 2-di-(parachlorphenyl) ethane, 1 : 2 : 3 : 4 : 10 - hexachloro - 1 : 4 : 4a : 5 : 8 : 8a - 2 : 3 : 3a : 7a - tetrahydro - 4 : 7 - endo - methyleneindene and parathion ; herbicides : the substituted aryloxyaliphatic acids such as 2-methyl-4-chlorophenoxyacetic acid, 2 : 4-dichlorophenoxyacetic acid, or a salt preferably an alkylamine salt thereof, polyhalogenated benzoic acids; plant growth regulants: maleic hydrazide.  The composition may be anhydrous or an aqueous concentrate or dilution, or may comprise a substantially water-insoluble material in the form of a wettable powder, i.e. admixed with a surface-active agent, or an aqueous suspension concentrate, or may comprise an oil-soluble material in the form of an aqueous emulsion of an oil solution concentrate.
Patent GB-414754-A (GB)
Title: Device for regulating the voltage in alternating current lines
IPC: H02M7/06
Filed: 1933-02-10
Abstract: 414,754. Automatic regulation; charging batteries. WESTINGHOUSE COOPER HEWITT GES., 6A, Kopenickerstrasse, Berlin. Feb. 10, 1933, Nos. 4077, 4078, and 4079. Convention dates, Feb. 16, 1932, March 23, 1932, and July 22, 1932. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 11, 1933.] [Class 38 (iv).] An increase of voltage is obtained from an A.C. source as the load increases by connecting in series with the load an iron-cored choke coil DR with a condenser C in parallel therewith. The coil and condenser combination is designed to produce a sharp bend in its current-voltage curve at a low load, where the phase displacement of its voltage vector is nearly zero, so that the succeeding increase of phase displacement causes a rise in consumption voltage, the drop of voltage in the combination remaining nearly constant. To produce saturation in the choke coil it has a closed magnetic circuit and iron of the highest permeability and low ironloss, e.g. a nickel-iron alloy is preferably employed. In the charging of batteries by dry surface or contact rectifiers R the combination causes the charging current to die away at a given cell voltage b, Fig. 4, and at a given minimum voltage a the charging current is reestablished in the manner of a highly sensitive relay. The combination of choke, condenser and rectifier when used without a battery is stated to produce an almost constant D.C. voltage. The rectifier need not be of the type referred to. The choke and condenser may be placed in the primary circuit of the supply transformer T. The choke may operate also as a smoothing coil or a coil DG may be used for smoothing.