baber/WOPTO huggingface dataset:
Patent CU-35293-A (CU)
Title: Comparador de frecuencia y fase totalmente digital
Inventor: MARTI ARIAS JOSE A
IPC: H03J7/10
Filed: 1980-07-24
Abstract: Comparador de frecuencia y fase totalmente digital está relacionado con el campo de la técnica eléctrónica y de las comunicaciones, y está destinado para proveer una salida que sea proporcional a la diferencia de fase entre dos senales de entrada siempre que esta no sobrepase los límites + pi 3,14 y - pi 3,14 , caso en el cual el circuito mantiene un valor mínimo o máximo hasta que las senales de entrada se sincronicen nuevamente en frecuencia. A diferencia de los esquemas existentes, las magnitudes angulares de entrada y el valor de la salida se expresan en forma totalmente digital, y los bloques utilizados para el procesamiento aritmético de estas magnitudes con circuitos integrados digitales, todo lo cual permite obtener una elevada precisión y una realización más compacta y confiable. La comparación de frecuencia se logra mediante el empleo de una máquina secuencial sincrónica, la cual posee tres estados que se asocian respectivamente a la operación normal y a los dos sentidos posibles de la diferencia de frecuencia entre las senales que se comparan.
Patent GB-446202-A (GB)
Title: Tyres for cycles and other vehicles
IPC: B60C19/04
Filed: 1935-01-02
Abstract: 446,202. Pneumatic tyres. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, Euston Road, London, and FIELD, E. F., Fort Dunlop, Birmingham. Jan. 2, 1935, No. 129. [Class 144 (ii)] Alight-weight cycle tyre comprises a bias-cut fabric casing 1 with a rubber tread 2, the folded edges 4, 5 of the casing being butt - jointed and connected by stitching 11, and a base-tape 6 secured (as by adhesive) over the joint. Access to the airtube 12 is provided by a series of unconnected portions 12 of the casing, at which places flaps 7, 8 fitted with press-button fasteners 10 are secured, as by stitching 19, to the edges of the casing. The fasteners, which may be of the kind described in Specification 201,430, may be replaced by lacing connections.
Patent GB-156204-A (GB)
Title: Improvements in and relating to transfer or carrying-over mechanism for calculating apparatus, machines for automatically compiling, recording and reckoning statistics and like machines
Filed: 1919-05-01
Abstract: 156,204. Lasker, W. W. May 1, 1918, [Convention date]. Transfer mechanism for calculating-machines of the type in which the totalizer pinions are adapted to be driven through gearing by differential actuating rack bars, comprises means associated with each totalizer pinion to set a carrying bar to operative position, and means to actuate said bar to cause the differential actuating rack bar of the next higher denomination to move an additional step beyond its normal position so as to advance the corresponding pinion one step. The invention is shown applied to a calculating machine as described in Specification 149,286. The totalizer pinions 738, Fig. 3, are mounted on a reciprocatory carriage 725 and each is provided with a cam 742 which when transfer is to be effected rocks a lever 807 and allows a link 830, which is suspended from a restoring bar 824 and rests on the lever 807, to fall so that a carrying bar 836 pivoted thereto is lowered into the path of a shoulder 612 on the actuating rack bar 610 of the next higher denomination. Each carrying bar is pivotally connected to a carrying lever 837 mounted on a rod 731 and is adapted to move the actuating rack bar an additional step when the corresponding carrying lever 837 is rocked by the engagement of a roller 846 at the upper end thereof with a cam 847 on the reciprocating cam plate 848. The transfer is effected in succession by arranging the cams 847 in staggered relationship as shown. A detent lever 811 holds the lever 807 in set position until the totalizer carriage is returned to its normal position whereupon a guide-bar 730 releases the detent and a bar 827 restores the link 830 and other parts to initial position. The cam plate 848 is reciprocated by means of a rack 852 thereon and a pinion 854 on a rocking lever 859 actuated from the main cam shaft 531; the pinion 854 also gears with a fixed rack 857. The actuating rack bars 610 are returned to normal position by a bar 915 connected by levers to the cam shaft; this movement is aided by a restoring slide 903 which is adapted to prevent accidental movement of the actuating rack bars at instant of transfer.
Patent GB-718776-A (GB)
Title: Improvements in or relating to crucibles
IPC: C04B41/85
Filed: 1953-01-02
Abstract: A quartz crucible coated with a thin layer of amorphous carbon is made by passing a purified hydrocarbon gas, such as benzene, over it in an oven and cracking the hydrocarbon by heat.  A temperature of 900 DEG C., applied for 20 mins. is stated to be suitable.ALSO:A method of preparing germanium or silicon includes the melting of germanium or silicon in a quartz crucible coated with a thin layer of amorphous carbon.  The crucible may be made by passing purified hydrocarbon gas such as benzene, over it in an oven and cracking the gas by heating up to 900 DEG C. for 20 minutes.
Patent GB-883795-A (GB)
Title: Cellulose ester filaments of h-shaped cross-section and their manufacture and use
Inventor: SMITH ARTHUR SNELLER
IPC: A24D3/10
Filed: 1958-01-02
Abstract: <PICT:0883795/IV (a)/1> <PICT:0883795/IV (a)/2> <PICT:0883795/IV (a)/3> Cellulose ester filaments of H-shaped cross-section, the horizontal of the H being shorter than either of the verticals of the H, are made by dry-spinning a solution of a cellulose organic acid ester through a spinneret having square orifices, drafting the filaments in the cabinet at a draft ratio of 0,7-1,43 and passing an evaporative medium through the cabinet to dry the filaments at a temperature of 60-90 DEG C.  Specified cellulose esters include cellulose acetate and single and mixed organic acid esters of cellulose in which the acids have 2-4 carbon atoms.  As shown, spinning solution is supplied via candle filter 12 to spinneret 13, having square orifices 14.  Heated air is supplied to the cabinet via conduits 23, 24 and removed via conduit 26.  In drying, the filaments gradually change from their original square cross-section to the specified H form.  Godet roll 20 is driven uniformly at a linear speed which, compared with the linear rate of extrusion of the spinning solution, yields the required draft ratio.  The filaments pass next over guide rolls 21 and, after being twisted, are wound on to bobbin 22.  U.S.A. Specifications 2,000,047 and 2,000,048 are referred to.
Patent GB-902933-A (GB)
Title: Camera lens diaphragm
IPC: G03B7/085
Filed: 1959-01-02
Abstract: 902,933. Photo-electric control of cameras. REVERE CAMERA CO. Jan. 2, 1959 [Jan. 20, 1958], No. 167/59. Class 40 (3). [Also in Group-XX] An iris diaphragm comprises two blades having oppositely orientated and tapered apertures, the two blades being mounted, with their apertures overlapping to define an iris opening, about axes which are laterally spaced and one blade being pin-and-slot connected to a galvanometer rotor operated by signals from a photo-cell receiving light from a subject and being also pin-and-slot connected to the other blade whereby the two blades rotate in opposite directions to vary automatically the size of the iris opening in response to variations of the light intensity. As shown, the diaphragm comprises blades 25 and 26 having tapered apertures 39 and 40 which overlap to define an iris opening. These blades are mounted on the camera body for rotation about axes 29, 35, respectively. Blade 25 has a pin-and-slot connection 43, 44 with a crank-arm 42 on the rotor of a galvanometer 12 connected to a photo-cell 7 and also has a pin-and-slot connection 47, 48 with the blade 26. Thus as the light intensity incident on photo-cell 7 varies, the blades are rotated in opposite directions to alter correspondingly the size of the iris opening.
Patent GB-585153-A (GB)
Title: Improvements in apparatus for filling bottles and other containers
IPC: B67C3/16
Filed: 1944-01-05
Abstract: 585,153. Filling bottles &c. COOPER, McDOUGALL, & ROBERTSON, Ltd., and HOLLOWAY, W. R. Jan. 5, 1944, No. 193. [Class 125 (ii)] An apparatus for filling bottles, tins &c. with liquid from reservoir g<2>, Fig. 2, comprises a filling head g, Figs. 1 and 2, having a spout b which enters a bottle d held with its mouth against a washer c. Air is withdrawn from the bottle by tube n and connections h, i, l and ejector pump m, thus drawing in liquid through connection e. When the level of liquid reaches the end of tube n the inflow stops, and the residual liquid in the spout empties itself into the bottle by a siphon action in which spout b and a tube r form the two legs of the siphon.
Patent GB-452628-A (GB)
Title: Improvements in or relating to the manufacture of nitrates
IPC: B61L3/14
Filed: 1936-01-02
Abstract: The production of nitrates, such as sodium, potassium, or calcium nitrate, from aqueous nitric acid of, say 40 per cent strength, and the corresponding chlorides is carried out in a reaction chamber through which steam under reduced pressure is passed in countercurrent for expelling the hydrochloric acid, the acid vapours being rectified in two stages, firstly to return nitric acid to the reaction chamber and then to separate hydrochloric acid, the residual water vapour being passed back to the reaction chamber together with steam obtained by evaporating the resultant salt solution under a pressure of at least one atmosphere; live steam may be added if desired.  Mother liquor obtained by crystallizing the nitrate may be passed back into the reaction chamber, and a portion of the chloride may be introduced into the rectifier which serves to separate the nitric acid from the acid vapours.  Specification 419,232 is referred to.
Patent GB-546414-A (GB)
Title: A process of distilling higher fatty acids
IPC: C11C1/10
Filed: 1941-01-06
Abstract: 546,414. Distilling fats and fatty acids. WILLIAMS, W. P. (Procter & Gamble Co.). Jan. 6, 1941, No. 207. [Class 32] Fatty acids are recovered from vegetable, animal, or marine fats and oils by passing the fatty acid-containing material without the use of an added gaseous medium through a heating zone into a body of the material maintained under reduced pressure whereby the fatty acids are instantaneously vaporized by their self contained heat and utilizing the vapours to project said material through a gas lift tube of known type against a baffle the vapours formed being withdrawn and condensed while the excess residual material is continuously withdrawn from circulation or may be recirculated in part. The fatty acid containing material is pumped from a tank 5 through a heat exchanger 4. where it is indirectly heated . by diphenyl vapours, into a still 10 provided with a residue basin 11, circulation tube 12 and baffle 15. The heated material is fed by a pipe 9 to the bottom of the tube 12 the vapours generated producing a circulation of the residual material up the tube against the baffle 15 and down again through the basin 11. The vapours are drawn off by the vacuum pumps through condensers 17, 18 maintained under successively reduced temperature by water boiling under successively reduced pressure maintained by pumps 28, 29. Excess residual material is drawn off through pipe 30 to receiver 31 or may be recirculated to the heater 4 through line 36. Condensates are recovered to receivers 20, 21. Specifications 408,117 and 546,416 and U.S.A. Specification 1,372,477 are referred to.
Patent GB-537622-A (GB)
Title: Improvements in or relating to the construction of boxes
IPC: B65D85/74
Filed: 1940-01-05
Abstract: 537,622. Crates &c. MUDD, H. A. Jan. 5, 1940, No.320. [Class 18] A box of the crate type or of the completely closed type, e.g. for butter, fruit and fish is constructed from one or more elements each consisting of two or more panels a hinged together and bevelled at c which are nailed into the side edges of plain wooden ends d. For an openwork crate battens e are secured as shown to the ends. In a closed box the elements a are connected by continuous panels.
Patent GB-562705-A (GB)
Title: Improvements in negative resistance devices for generating oscillations or reducing damping
IPC: H04B1/16
Filed: 1943-01-08
Abstract: 562,705. Telephonic amplifiers. STANDARD TELEPHONES & CABLES, Ltd., CHATTERJEA, P. K.. and SCULLY, C. T. Jan. 8, 1943, No. 377. [Class 40 (iv)] [Also in Group XL] An electric resonant circuit comprises an inductance, at least part of which is connected in series with the resistance element of a thermistor having a negative temperature coefficient of resistance to a source of direct current, the thermistor circuit resistance being adjusted so that the voltage-current characteristic curve of the thermistor circuit has a portion whose slope is either zero or slightly positive so as to produce oscillations or to form a resonant circuit with very low damping. One form of circuit is shown in Fig. 1 in which a thermistor element R is connected in series with a direct current source E and part of an inductance L of a tuned circuit LC. The temperature of the thermistor is governed by a heater r. In Fig. 2, curve A is the voltage current characteristic of element R with no applied heat, and curve B the characteristic of the remaining resistance in the series circuit. This gives a combined characteristic C which has a horizontal portion P about which, as a working point, oscillations occur, the frequency being determined by the circuit LC. The frequency is low (about 200 per sec.) due to the thermal time-lag of the element R. By altering the amount of heat supplied by r or by changing the resistance in the circuit, the point P may be made to approach the peak of the characteristic so that there is no point of zero slope, only a point of inflection having a small positive slope. At this point no oscillations are produced, but the circuit LC has very low damping. Where it is not desired to alter the working temperature, the heater r may be dispensed with.
Patent GB-571331-A (GB)
Title: Improvements in and relating to dial type thermometers
IPC: G01K1/16
Filed: 1944-01-11
Abstract: 571,331. Thermometers. MILLER, F. Jan. 11, 1944, No. 489. [Class 97 (iii)] In a bi-metallic dial thermometer, the bi-metallic heat-sensitive element is mounted in front of the dial in such a manner that the air in the room &c. is in free contact with it. As shown, the bimetallic element 16 consists of a coil located in front of an annular glass cover 3 and protected by a perforated cover 21 through which the air may circulate. The coil actuates a pointer 20 over a dial 1 and is mounted upon a frame which may be rotated by the manufacturer to set the mechanism to give correct temperature readings on a chart 1. The frame is retained in its adjusted position by friction at its pivotal mounting 9 and by the friction of spring fingers pressing on a dial plate 5.
Patent GB-362203-A (GB)
Title: Improvements in or relating to gear for moving chimneys of boilers and the like
IPC: F23J11/00
Filed: 1931-01-07
Abstract: 362,203. Load-handling appliances. RANSOMES & RAPIER, Ltd., Waterside Iron Works, and WORSNOP, T., 35, Oxford Road, both in Ipswich. Jan. 7, 1931, No. 532. [Class 78 (iii).] Gear for moving boiler chimneys or the like of the kind in which the chimney &c. is carried towards its lower end on a pivoted arm, comprises a floating lever pivoted at one end to the chimney, a fulcrum about which the lever pivots and at the same time moves as a whole, and a rope or other mechanism acting on the free end of the lever to effect and control the movement thereof. The chimney A is pivoted at A<2> by means of arms A<1> carrying semicircular cams C. Pivotally connected to the chimney near the centre of gravity is one end of a floating lever comprising two arms D having shoulders D<3> and connected together at one end by a transverse rod D<2> carrying pulleys F. To raise the chimney from the inoperative position shown in full lines, the floating lever is raised by means of ropes E fastened at one end to the boiler and passing round the pulleys F and fixed pulleys F<1>, the shoulders D<3> of the lever moving between guides G on the boiler. When the pulleys F approach the pulleys F<1> the centre of gravity of the chimney is substantially over the pivot A<2> and the momentum carries it into the position shown by the chain lines. In this position the lever is fulcrumed on the cams C, the weight of the chimney at one end tending to raise the pulleys F away from the pulleys F<1> and by slackening the ropes E the chimney may be lowered under control on to its seating A<3>. The removal of the chimney is effected by pulling the ropes until the pulleys F, F<1> approach. Momentum will carry the centre of gravity of the chimney to the other side of the pivot A<2> and a slackening of the ropes allows the chimney to be lowered into its operative position.
Patent GB-815062-A (GB)
Title: Improvements relating to electron lens apparatus
Inventor: ARCHARD GEOFFREY DENNIS
IPC: H01J37/153
Filed: 1955-01-07
Abstract: 815,062. Electron lenses. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 3, 1956 [Jan. 7, 1955], No. 576/55. Class 39(1). An electron lens system for correcting chromatic aberration, e.g. in a beam of linear cross-section, comprises, Fig. 1, a pair of positive electrostatic poles for outwardly deflecting the beam and a pair of negative poles for inwardly deflecting the beam. A beam of circular cross-section is corrected in mutually perpendicular directions by two sets of correcting poles C 1 , C 2 , Fig. 2, acting successively on the beam S 1  is a 4-pole system for imparting astigmatism to the beam and S 2  is a similar system for restoring the circular cross-section. The poles may be spheres, wedges or laminae. Spherical aberration may also be corrected in the manner described in Specification 794,014.
Patent GB-360266-A (GB)
Title: Manufacture of trialkoxy-derivatives of phenylethylamine
Filed: 1931-01-07
Abstract: 3 : 4 : 5-Trialkoxyphenylethylamines, in which at least one alkoxy group contains more than one carbon atom, are prepared by catalytically reducing the corresponding 3 : 4 : 5-trialkoxynitrostyrenes.  An example is given of the production of 3 : 4 : 5-triethoxyphenylethylamine by treating 3 : 4 : 5-triethoxynitrostyrene in alcohol solution with hydrogen in the presence of palladious chloride at 15 DEG  C.  The preparation of the samples is described in the Specification, in which connection it is stated that the treatment with hydrogen of 4-n-butoxy-3 : 5-dimethoxynitrostyrene in glacial acetic acid solution at ordinary temperature in the presence of palladious chloride, colloidal platinum or palladium, chloroplatinic acid or platinum black yields 4-n-butoxy-3 : 5-dimethoxyphenylethylamine.ALSO:3 : 4 : 5-Trialkoxy-phenylethylamines, in which at least one alkoxy group contains more than one carbon atom, are prepared by reducing the corresponding 3 : 4 : 5-trialkoxynitrostyrenes.  The reduction may be effected chemically, catalytically or by electrolysis.  The 3 : 4 : 5-trialkoxynitrostyrenes are obtained by converting 3 : 4 : 5-trialkoxybenzoic acids by way of their halides into the aldehydes and condensing the latter with nitromethane.  According to the example, 3 : 4 : 5-triethoxybenzoic acid is heated with thionyl chloride and the resulting acid chloride treated with hydrogen in the presence of a barium sulphate-palladium catalyst to give triethoxybenzaldehyde; nitromethane is then added with cooling and the triethoxynitrostyrene formed is reduced with hydrogen in the presence of palladious chloride to the corresponding phenylethylamine.  The Specification includes the following description of the preparation of the samples:--(1) the sodium salt of syringaic acid is heated with n-butyl bromide and the resulting 4-n-butoxy-3 : 5-dimethoxybenzoic acid converted with thionyl chloride into the acid chloride, which is then reduced with hydrogen and palladium to 4-n-butoxy-3 : 5-dimethoxybenzaldehyde; with nitromethane the latter gives 4-n-butoxy-3 : 5-dimethoxynitrostyrene which by treatment with hydrogen in the presence of palladious chloride, colloidal palladium, chloroplatinic acid, colloidal platinum or platinum black yields 4-n-butoxy-3 : 5-dimethoxyphenylethylamine; (2) in a similar manner, 4-benzyloxy-3 : 5-dimethoxyphenylethylamine is obtained from syringaic acid, the final reduction however being performed in two stages, first with zinc dust and glacial acetic acid to form 4-benzyloxy-3 : 5-dimethoxy-1-phenylacetaldoxime and then with sodium amalgam in alcoholic acetic acid to produce 4-benzyloxy-3 : 5-dimethoxyphenylethylamine.
Patent GB-251677-A (GB)
Title: Improvements in or relating to the production of matrices for stereotype printing
IPC: B41D1/00
Filed: 1925-01-08
Abstract: 251,677. Victory-Kidder Printing Machine Co., Ltd., Wilson, H. W. V., and Nixon, E. G. Jan. 8, 1925. Embossing. - Stereotype matrices are prepared by pressing a flong on to a type forme by the application of pressure through the medium of a fluid, semi-fluid, or plastic material capable of transmitting pressure equally in all directions. The pressure fluid may be brought into direct contact with the flong or may be separated therefrom by a flexible diaphragm such as a thin sheet of rubber, and a vacuum may be produced to withdraw the air from between the forme and flong through the interstices of the type. The apparatus comprises a shaft 20 carrying a worm 22 driving a cam shaft 24, and an eccentric 25 operating the plunger of a pump 26. The pump is connected to a valve-box 28 housing valves controlled by rockers 29 operated from the cam shaft 24, and the box 28 is connected to a cylinder 30 and to a pipe 34. The ram 31 of the cylinder 30 acts through a toggle-joint 32 on a platen 33 carrying the forme which is drawn on to the platen by a roller 38 operated from Geneva mechanism 42 controlled by the cam shaft 24. The pipe 34 is provided with a by-pass and relief and non-return valves, and is connected to a recess in the bottom of a fixed platen 36, the flexible diaphragm being secured over the recess if required. The duration of the pressure, which may be intermittent or constant, may be controlled automatically or manually. According to the Provisional Specification, the base which serves as a support for the forme and flong acts as a receptacle for the pressure fluid, and is adapted to be connected to a cover to support the pressure applied through the fluid, the pressure being applied by a force pump or hydraulic ram. Provision is made for the escape of air.
Patent GB-1514851-A (GB)
Title: Dental x-ray apparatus
IPC: A61B6/14
Filed: 1976-01-08
Abstract: 1514851 X-ray exposure control SIEMENS AG 8 Jan 1976 [2 May 1975] 00706/76 Heading G1A Apparatus comprising a film-holder 2 for use in a mouth 1 and an x-ray source 7 directable at a patient, includes a radiation detector and wireless transmitter 4 attached to the film-holder 2, and a wireless receiver 5, 12 and control system 10, 11, 14 with the source for terminating an exposure at a predetermined level. A direct x-ray detector, or a photo-sensor 18, Fig. 2, faced with a phosphor layer 17 behind the film, signals the x-ray intensity to an amplifier 19, integrator 20 and comparator 21 which, when a predetermined amount of radiation, settable by a manual reference 22, is attained, turns off a wireless transmitter 23 which has previously been turned on manually at 25. The exposure, started by a manual switch 13, Fig. 1, is stopped by the opening of a switch 14 when the receiver 12 no longer receives the wireless signal. In a simpler embodiment, Fig. 3 (not shown), the transmitter (23) sends a signal directly representing the radiation intensity, the integrator and comparator then being disposed in the receiver.