baber/WOPTO huggingface dataset:
Patent GB-803457-A (GB)
Title: Glass furnace with apparatus for cooling the melting tank by means of a cooling liquid
Inventor: VOLLHARDT FROMUT
IPC: C03B5/44
Filed: 1957-04-17
Abstract: 803,457. Furnace walls and hearths. SCHMIDT'SCHE HEISSDAMPF G.m.b.H. April 17, 1957, No. 12562/57. Class 51 (2). [Also in Group XIII] A glass melting furnace of the tank type has a framework of spaced cooling tubes 1 extending between lower and upper headers 4 and 7 respectively, the tank being lined with plastic refractory 12, and the walls 8 and roof 5 with masonry or fireclay. The lining 12 is so dimensioned that, in operation, a solid layer 13 of glass forms thereon. The tubes 1 are provided with lugs 15 engaging the lining materials. Risers 16 connect header 7 with a steam drum 18, which is also connected to header 4 by downcomers 17. Alternatively, the cooling tube framework is connected to a waste heat boiler associated with the furnace. Burner ports 19 and gas discharge ports 20 are formed either by bending tubes 1 or by providing top and bottom headers 21 defining said ports.
Patent GB-910924-A (GB)
Title: Improvements in and relating to the production of orthophosphates of calcium
Inventor: SMIT NIMROD
IPC: C01B25/32
Filed: 1959-04-14
Abstract: Orthophosphates of calcium are obtained by hydrolyzing condensed calcium phosphates containing 2 to 15% by weight of silica and wherein the phosphorus to calcium ratio expressed as P2O5:CaO is in a molar ratio of 0,96-1,2, the silica to calcium ratio expressed as SiO2-CaO is in a molar ratio of 0,27-0,53, and/or the silica to phosphorus ratio expressed as SiO2:P2O5 is in a molar ratio of 0,1-0,7.  The condensed calcium phosphates are obtained by reacting rock phosphate and apatite concentrates at 1,000 to 1,200 DEG C with phosphorus pentoxide; sand, quartz, phosphate ore, limestone and/or lime are added to obtain the above proportions of silica, calcium phosphorus.  The hydrolysis to mono-calcium and orthophosphate is carried out by contacting the condensed calcium phosphates with water at 90 DEG  to 100 DEG C.  The monocalcium orthophosphate may be mixed with lime to obtain di-calcium phosphate.  The calcium orthophosphates may be ammoniated with anhydrous ammonia, ammonium hydroxide solution, ammonium nitrate and ammonia solutions, urea and ammonium hydroxide solutions or urea formaldehyde and ammonium hydroxide solutions.
Patent GB-1097064-A (GB)
Title: Photographic colour reproduction processes and materials
Inventor: BARR CHARLES ROBERT
IPC: G03C8/52
Filed: 1965-03-25
Abstract: 1,097,064. Photographic colour process. EASTMAN KODAK CO. March 25, 1965 [March 25, 1964], No. 12642/65. Heading G2C. A positive colour photographic reproduction is produced by (A) exposing to a subject a lightsensitive material comprising a support carrying at least two colour-forming layer units sensitive to different regions of the spectrum, each adjacent pair of units being separated by a barrier layer comprising a hydrophilic colloid binder containing a water-insoluble substance capable of forming a water-insoluble salt with a mercaptan, such as a silver halide, colloidal silver or gold or a colloidal metal sulphide, selenide or telluride, each colour-forming unit comprising (a) a sensitive silver halide emulsion, (b) a water-insoluble metal salt emulsion spontaneously developable with a colour developing agent, such as a lightsensitive silver salt containing development nuclei or which has been fogged chemically or with light, (c) a non-diffusible colour coupler contiguous to the spontaneously developable metal salt and capable of forming a non-diffusible dye with oxidized developer, and (d) a non-diffusible mercaptan-releasing hydroquinone derivative; (B) treating the exposed material with an alkaline solution in the presence of a primary aromatic amino developing agent, so that in the exposed areas of the silver halide emulsion (a) silver is developed and the oxidized developing agent reacts with the hydroquinone derivative (d) to release mercaptan which diffuses into the developable metal salt emulsion (b) inhibiting its development, and in unexposed areas of the silver halide emulsion (a) the developing agent develops the metal salt emulsion (b) and the oxidized developer reacts with the colour coupler (c) to form a positive non-diffusible dye image and (C) removing developed silver and residual silver halide, the non-diffusible mercaptan-releasing hydroquinone derivative having the general formula: - wherein Rad is a photographically inert heterocyclic radical which when split from the hydroquinone nucleus forms with the monothio linking radical a diffusible mercaptan, Ball is a photographically inert organic ballasting group which renders the compound non-diffusible, Sol is an acidic solubilizing group and R and R 1  are each hydrogen or an alkaline-splittable masking group. Three colour-forming layer units sensitive respectively to red, green and blue light may be arranged with the blue-sensitive unit being furthest from the support, the barrier layer under the blue unit containing yellow filter material. The developing agent may be sited in the light-sensitive material or in the alkaline solution. So that the exposed silver halide emulsion develops and releases inhibitor before the developable metal salt emulsion develops, the silver halide emulsion may be sited further from the support than the metal salt emulsion or a silver halide emulsion having a shorter development induction period than the metal salt may be used.
Patent GB-865093-A (GB)
Title: Electro-mechanical filters
IPC: H03H9/54
Filed: 1957-04-18
Abstract: 865,093. Electromechanical filters. TOYO TSUSHINKI KABUSHIKI KAISHA. April 18, 1957 [April 23, 1956 (3); Feb., 26, 1957], No. 12759/57. Class 40(8) An electromechanical filter has piezo-electric quartz crystal transducers and mechanical resonators also made of quartz crystal. In the filters of Figs. 1(a) and 1(b) the transducers 1, resonators 2 and coupling members 3 are formed from a single block of quartz. The filter is supported by leads 5 soldered to the electrodes of the transducers. These filters are stated to be of the constant-K type and their electrical analogues are discussed in the Specification. It is stated that the transducers may vibrate in a bending torsional, thickness or lateral mode. The transducers in the embodiment of Fig. 3b vibrate in a longitudinal extensional mode as indicated by the arrows. The transducers are joined by a main coupling rod 10 of length equal to four half-wavelengths, this rod being coupled at intervals of one half-wavelength to three-elongated resonant elements 9. The elements 9 are excited at points displaced from their centre points in such a manner that they are antiresonant at two spaced frequencies. The filter so formed is of the in-derived type being the equivalent of the electrical filter shown in Fig. 3c. Similar antiresonant effects are obtained in the filter of Fig. 4a by asymmetric coupling of the longitudinal-mode transducers and resonators 11, 13. The equivalent electrical network Fig. (4b, not shown) is again of the in-derived type. The construction of Fig. 5a is similar to that of Fig. 3b except that it also includes resonant elements 16 which modify the equivalent circuit of Fig. 3c by the addition of series-resonant elements to the series branches of the circuit.
Patent GB-592144-A (GB)
Title: Improvements in and relating to objectives suitable for photographic purposes
IPC: G02B9/34
Filed: 1945-05-22
Abstract: 592,144. Lenses. HASSELKUS, J. W., and RICHMOND, G. A. May 22, 1945, No. 12774. [Class 97 (i)] An objective of the type shown comprising a negative doublet and a positive meniscus on each side of a central diaphragm has the following characteristics : (1) the refractive indices of the double convex lenses lie between 1.66 and 1.57 and their dispersive indices are above 53. (2) The refractive and dispersive indices of the double concave lenses are lower than those of the double convex lenses so that at the cemented surfaces the difference of refractive index is not greater than 0.8 and of dispersive index not greater than 20. (3) The refractive and dispersive indices of the positive menisci lie between 1.66 and 1.51 and 45 and 60 respectively. (4) The focal lengths of the doublets are each numerically greater than twice the focal length of the complete lens and the focal lengths of the meniscus lenses lie between .08 and 1.6 such focal length. Data are given.
Patent GB-150387-A (GB)
Title: Improvements in or relating to means for preventing theft or unauthorized use of automobiles and other vehicles
IPC: B62B5/04
Filed: 1919-05-21
Abstract: 150,387. Dewelle, L. May 21, 1919. Locking by positive detents.-To prevent theft &c. of an automobile or other vehicle, the wheel hubs 1 are fitted with toothed collars 2 adapted to be engaged by toothed collar 4 sliding on the axle 20 and operated by a handle 21 and eccentric 13 which engages spring-pressed rods 6 secured to the collars 4.
Patent GB-591327-A (GB)
Title: Stands for bicycles
IPC: B62H1/02
Filed: 1945-05-22
Abstract: 591,327. Cycle supports. SCHWINN, F. W. May 22, 1945, No. 12837. Convention date, April 10, 1944. [Class 136 (i)] A bicycle stand of the kind adapted to be moved into operative position by the foot of the user comprises a tubular metal housing 37 mounted on the frame of the bicycle, a prop 38 consisting of a metal rod bent at the bottom to form a foot 64 and at the top to form a trunnion 55 rotatable in the housing 37 and carrying a transverse pin 67 engaging between two shoulders 62 which hold the prop in either of two positions, the housing being provided with a tapered socket 40 for receiving a complementary outer surface 51 on the cam 45 so that any wear on the cam is automatically taken up by its further movement into the socket. The cam is held against rotation within the housing if their tapered portions are of non circular section. A helical compression spring 69 fills the space between the housing 37 and trunnion 55 and urges the pin 58 against the cam 45, a washer 68 being interposed. The other end of the spring engages a bearing 70. The housing may either be welded to the frame, Fig. 2, or welded to one of a pair of clamping members 76, 78, Fig. 10, having flanges 77, 78 for engaging the rear fork members 32, 33. The housing may be packed with grease to act as a lubricant.
Patent GB-1199824-A (GB)
Title: Electro-Optical Rangefinder
Inventor: PRADEL GEORG
IPC: G01S7/481
Filed: 1968-03-18
Abstract: 1,199,824. Optical range finder. CARL ZEISS JENA VEB. 18 March, 1968, No. 12933/68. Heading H4D. Specification describes an optical range finder of the type wherein amplitude modulated infra-red light from a source 8 is focused on to a distant reflector and the reflected light therefrom is directed to photo-sensitive means 14 via a diaphragm 13 wherein the range of the distant reflector is determined by known means. The invention lies in the provision of a integral mirror/lens combination 3 in the transmitting optics, whereby the optical paths are shortened and easily attained spherical surfaces for the mirror/lens can be used. For initial setting up, source 8 is switched off and a visible light source 9 switched on. Light from 9 is reflected by prism hypotenuse 5 on to the mirror lens whereby it is refracted by the lens 3, reflected by a silvered surface 3<SP>1</SP> and refracted again to form a parallel beam which is directed towards the distant reflector. Light from the reflector is focused by lenses 1 and 2 on to lens 11 via hypotenuse 5 and the focused light is observed at O 2  via reflector 15 and eyepiece 16, 17. For range measurement, source 9 is shut off and source 8 switched on, the infra-red light from which is directed to the mirror/lens 3 by reflective coating 6. Reflector 15 is now in inactive position 151 whereby the focused reflected infra-red at 10 is directed via lens 12 and diaphragm 13 on to the photosensitive means 14.
Patent GB-921278-A (GB)
Title: Process for the alkaline, activated polymerization of ªE-caprolactam
Inventor: DACHS KARL
IPC: C08G69/18
Filed: 1961-04-11
Abstract: S -caprolactam is polymerized in the presence of alkaline catalysts, 0,1 to 15% by weight based on the weight of caprolactam, of caprylic lactam and with the aid of activators having the general formula <FORM:0921278/IV(a)/1> wherein R1 represents hydrogen or an organic radical, R represents an organic radical, X represents oxygen, sulphur or the divalent radical > NR1 and Y represents the radicals <FORM:0921278/IV(a)/2> -OR, -SR or -R.  Many activators and catalysts are specified. In the examples, S -caprolactam is polymerized in the presence of caprylic lactam and:- (1) sodium methylate and bis-(caprylic lactam-N-carboxylic acid)-hexamethylene diamide-1:6 and (2) potassium and (a) bis-(caprylic lactam-N-carboxylic acid)-hexamethylene diamide-1:6, (b) tricyclohexyl guanidine and (c) 7-methylphenylene-2:4-bis-N:N1-phenylurethane. Specifications 900,150 and 900,151 are referred to.
Patent GB-1213085-A (GB)
Title: An electrical system for a vehicle
IPC: H02J7/14
Filed: 1969-03-12
Abstract: 1,213,085. Control systems for vehicles. TOWMOTOR CORP. 12 March, 1969 [14 March, 1968], No. 12964/69. Heading H2H. An electrical system for a vehicle-such as a fork lift truck-is provided with means for sensing and indicating an undesirably low battery voltage together with means for disabling at least one function of the vehicle after the low battery voltage has existed for a predetermined time. The drive and lift functions of a fork lift truck are hydraulically actuated by means of valves 16<SP>1</SP>, 22<SP>1</SP> the hydraulic pressure being supplied by a pump 13 driven by a motor 14 energized by a battery 11. Closure of a lift control switch 16 energizes relay 17 thereby closing contacts 18 to start the motor 14. The switch 16 also actuates the valve 16<SP>1</SP> so that both the drive and lift functions of the track are available. The voltage of the battery 11 is sensed by means of a temperature compensated voltage divider 23 and a transistor circuit 43 When the battery voltage has dropped to an unacceptable level, transistor 46 provides an output at a point 52 to activate a pulsing network 53 which provides pulses to a timing device 54. When the pulses have persisted for a predetermined time-say one minute-the timing device 54 provides an output which triggers a thyristor 36 into conduction to energize a warning device such as a lamp 12. The output of the timing device 54 is also fed to a second timing device 56 which-should no action have been taken after energization of the lamp 12- triggers a second thyristor 42 say, five minutes after the lamp 12 has been energized. Conduction of thyristor 42 energizes relay coil 21 opening contact 19 to de-energize the motor 14 thereby disabling the drive and lift functions othe truck. A switch 22 is provided to re-energize the relay coil 17 and motor 14 and to actuf ate valve 22<SP>1</SP> by means of which the drive function only of the truck may be restored in order that the truck may be driven to a battery charging station. In a modification the relay 21 may be replaced by solid state components.
Patent GB-829187-A (GB)
Title: Improvements in and relating to weighing apparatus
Inventor: FLETCHER LAWRENCE ALFRED
IPC: B07C5/20
Filed: 1955-05-05
Abstract: 829,187. Vibration dampers. SOLARTRON ELECTRONIC GROUP Ltd. July 13, 1956 [May 5, 1955], No. 13099/55. Class 108(3) [Also in Groups XXXV and XXXVIII] A vibration damping device for a weighing machine (see Group XXXVIII) comprises an electromagnetic transducer consisting of a coil 105 fixed to one of the movable weighing members 10 and a permanent magnet 106 fixed to a frame member, the voltage output from the coil 105 produced by vibrations being applied to an amplifier which feeds the coil 109 of a similar transducer to produce amplitude vibrations between the coil 109 and the magnet 110 which oppose the magnet vibrations.
Patent GB-805535-A (GB)
Title: Directional reference system
Inventor: GARBARINI ROBERT F
IPC: G01C21/16
Filed: 1955-05-06
Abstract: 805,535. Gyroscopic apparatus. SPERRY RAND CORPORATION. May 6, 1955, No. 13243/55. Drawings to Specification. Class 97(3) [Also in Group XXXVIII] In a craft navigational-aid apparatus the "warder" of a local directional reference, for example, a gryoscope, is measured by computing the azimuth position of a celestial body, using the readings of the reference, and comparing the computed position with the actual position of the body by means of an optical device sighted on the celestial body by the computed output signals. Correction of the readings of the directional reference may be made either by reorientation of the reference or by the adjustment of its output signal, autoanatacally or directly by the observer, in accordance with the measured " warder." The data employed in the computation is Greenwich hour angle of Aries, Sidereal hour angle, west longitude of craft, the latitude of the craft and the directional readings from the directional instrument in the craft. Both azimuth and elevation angles of the celestial body are computed and corresponding signals in conjunction with the craft heading signal derived from the direction reference, are applied to electrical servo systems controlling azimuth and elevation motors to direct the line of sight of the optical device. The azimuthal deviation of the optical device, for example, a telescope, from correct alignment on the celestial body is a measure of the gyroscope "warder". When automatic correction of the gyroscope is used the telescope will be continuously moved to track the celestial body as the craft moves. Specification 664,092 [Group XXXV] is referred to.
Patent GB-132482-A (GB)
IPC: H01R4/24
Abstract: 132,482. Collie, J. H. Aug. 13, 1918. Needle-point couplings.- Relates to the connexion of electric lamps in circuit by means of pointed contacts mounted on the holder and adapted to penetrate the insulation of the supply cables. According to the invention, a flanged lampholder provided with the piercing-pins is mounted within a hollow block a so that the pins d project into transverse channels in the closed end of the block, which is provided with side plates for the attachment of a wire or other guard. The cables are pressed down on to the points by a plate e which swivels on one set-screw and is clamped by another. The plate is provided with a loop f for suspending the fitting.
Patent GB-281537-A (GB)
Title: Improvements in the manufacture of white artificial horn
IPC: C08G8/10
Filed: 1927-05-17
Abstract: 281,537. Jõger, A., and Herold Akt.- Ges. May 17, 1927. Phenol-formaldehyde condensation products suitable for use as a substitute for horn are obtained in the following way. One part bv weight of phenol, 2.2-3.0 parts by weight of a 30 per cent aqueous solution of formaldehyde, and an alkali salt of a fatty acid, such as sodium stearate, in an amount corresponding to at least 0.035 part of sodium hydroxide are heated at about 160‹ F. for about 90 minutes, and the product is then dehydrated in vacuo until the temperature, which at first decreases, has risen again to about 130‹ F. An amount of salicylic acid corresponding to 1.8 molecules in respect of each molecule of alkali in the mixture is then added, and the mixture is further dehydrated until a sample ceases to be sticky under cold water or cloudy under flowing water. The product is finally hardened in open moulds at a temperature of 175-195‹ F. The process may be modified by forming the fatty acid salt in situ, and the product may be modified by the addition of oily substances, such as castor oil or glycerine, in small amount. Specification 8875/05 is referred to.
Patent GB-810217-A (GB)
Title: Improvements in or relating to card-feeding apparatus
Inventor: ROSE BERTRAM LESLIE
IPC: G06K13/103
Filed: 1956-04-30
Abstract: 810,217. Card feeding apparatus. POWERS SAMAS ACCOUNTING MACHINES Ltd. March 4, 1957 [April 30, 1956], No. 13273/56. Class 117 Cards are discharged at a high speed from magazine 1 by reciprocating picker 50, the said picker 50 and the throat pad 6 being carried by carriage 7 which is reciprocated between guide rollers 15, 19 by cam 21, which latter engages and pushes follower 22 of the said carriage against retraction of a return spring. Picker 50 has two plates 24, 25 (Fig. 4), which abut to form an edge 28 which engages the lowermost card so as to discharge it, ramp 27 providing an adjustment for the said edge. Rollers 15 are carried by bell cranks 16 influenced by springs 18, the rollers 19 being carried eccentrically so that the carriage may be adjusted to present the edge 28 parallel to the engaged edge of the lowermost card.
Patent GB-165445-A (GB)
Title: Improvements in the process of drying and compressing raw peat and the like
IPC: C10F5/06
Filed: 1921-05-10
Abstract: 165,445. Haddan, A. J. H., (Torfverwertungsges. Dr. Pohl und von Dewitz). May 10, 1921. Addition to 158,513, [Class 55 (i), Coking, &c.]. Multi-stage processes. - Peat treated in the manner described in the parent Specification modified as described in Specification 159,464, [Class 55 (i), Coking &c.], is removed from the pressure apparatus when a suitable reduction of the moisture has been effected, but prior to completion of the coking. The drying operation is then completed, for example by means of steam derived from containers in which the pressure treatment is carried out.
Patent GB-160687-A (GB)
Title: A new or improved apparatus for tensioning and controlling yarn in textile machines
IPC: B65H59/10
Filed: 1920-05-14
Abstract: 160,687. Stroud, A. E. May 14, 1920. Tensioning yarns in warp form. - A device for use in textile machines, and particularly in twist-lace machines, is adapted to tension and take up the slack of a single thread or a group of threads. Fig. 1, represents a front view of the apparatus, in which a standard 1 fixed on a part 2 of a machine has top and bottom guide-rings 5 to retain the thread 6, which in this case is drawn from a bobbin 6a. A roller 7, carried by a frame 8 pivoted to the sides of the standard 1, is pressed against the thread to jam and tension it. In Fig. 2, which is a back view, a weigkt 10 is shown supported by cords 11 passing over a fixed part 12 and having their ends fastened to the sides of the frame 8, so that the tension on the cords 11 tends to press the roller 7 against the standard 1. By altering the points of attachment of the cords 11 to the frame 8, the tensioning effect will be varied. An arm 14 having an eye 13 through which the thread passes is in one with a collar 15 rotatably mounted on one of the fixing jaws 3, so that the arm 14 with its collar 15 can pivot about the centre of the collar and is displaced from its normal position solely under the action of the thread. A spring 16, hooked to a pin 18 in the standard 1, has its other end fastened to the lower part of the collar 15 so that the arm 14 always tends to reassume its vertical position and then takes up any slack in the thread. The spring 16 may be replaced by a weight.