baber/WOPTO huggingface dataset:
Patent GB-893602-A (GB)
Title: Improvements in or relating to ophthalmic photography
Inventor: NOYORI KIMIHARU
IPC: A61B3/12
Filed: 1958-11-11
Abstract: 893,602. Ophthalmic photography. SATA, Y. Nov. 11, 1958, No. 36220/58. Class 97(1). In a combined ophthalmoscope and camera an apertured or semi-transparent mirror is used for observation and photography and illuminating means include separate light sources for observation and photography. As shown, the fundus of the eye 2 is observed through an aperture in mirror 1 (which may alternatively be semi-transparent) by means of the usual ophthalmoscope lens disc 3 and is photographed by reflection from the front surface of the -mirror. Illuminated graticule 27 and film 21 are arranged at the principal focal planes of lenses 24 and 20 respectively, and co-operate with semi-transparent mirror 19 and collimating lens system 12, 14 and 15. The fundus is illuminated by lamp 4 by means of a condenser 7, having a central circular opaque patch, uncoated glass plate 6 and lens 9. The image of the graticule 27 is projected on to the unilluminated part of the fundus provided by the patch and the position of lens 15 is adjusted axially; on turning knob 17 (by means of pinion 18 engaging the toothed part of slider 16) so that the graticule is clearly focused on the fundus and the latter is, accordingly, conjugate with the film 21. Lens disc 3 is separately adjustable. On pressing button 11, battery operated flash lamp 5 is fired, lamp 28 extinguished and shutter 23 simultaneously opened to effect exposure of the film. Lens 15 may be omitted and lens 14 made movable.
Patent GB-522680-A (GB)
Title: Ultra-sensitive balanced electromagnetic relay
IPC: H01H53/015
Filed: 1938-12-12
Abstract: 522,680. Electric firing of torpedoes, mines etc. SOC. ANON. PIGNONE-OFFICINE MECCANICHE E FONDERIA. Dec. 12, 1938, No. 36228. Convention date, Dec. 20, 1937. [Class 9 (ii)] [Also in Group XXXVII] A relay operable by a light current and so balanced as to be unaffected by bodily movements of itself, comprises two armatures a, a<SP>1</SP> with their windings in series and reversed relatively to each other so that on the passage of a current they rotate in opposite directions. The armatures carry cranks e, e' with counter weights f, f<SP>1</SP> and connected by links g, g' to a lever i pivoted at l. Passage of current through the armature windings causes them to move in the direction of the arrows c, c<SP>1</SP> and the lever i to be operated. Magnetic needles m on the armatures co-operate with the magnet pole pieces to return the armatures to their original position. The invention is particularly applicable to torpedoes and the. like, being operated by the light galvanic currents caused by the contacting of iron members of vessels with copper antennae, and the lever i being adapted to ignite the explosive charge of the torpedo by closing a circuit or releasing a percussionhammer or spring-driven dynamo.
Patent GB-1172599-A (GB)
Title: Transport Vehicle Loading Means
Inventor: KLAUS KASPAR
IPC: B60P1/64
Filed: 1967-08-08
Abstract: 1,172,599. Vehicle container loading apparatus; spreaders for containers. K. KLAUS. 8 Aug., 1967 [29 Aug., 1966 (2)], No. 36299/67. Headings B8E and B8H. [Also in Division B7] Apparatus for loading containers 6 on to a semi-trailer 1 or other vehicle comprises swivelling piston and cylinder operated lifting devices 7, 8 positioned to the front and rear of the container. Each swivelling device has a main and an auxiliary rocker arm 13, 14 actuated respectively by piston cylinder arrangements 15, 16 and a supporting foot 11 actuated by a piston cylinder arrangement 27. When swung to the position of Fig. 6 the container is suspended from the end 20 of the rocker arm 14 by carrier ropes 21. The device 7 may be mounted on the trailer or on the frame 9 of the tractor 2 and to close the gap between the container 6 and the device, which is necessary to prevent fouling during transport, the device 7 may be shiftable on the frame 9 or the container may be shifted with the trailer by sliding at the fifth wheel 4. Alternatively carrier bars may be interposed between the device 7 and the container 6, Fig. 2 (not shown).
Patent GB-980496-A (GB)
Title: Improvements in or relating to seismometers
Inventor: CONNELL DAVID VIVIAN
IPC: G01V1/18
Filed: 1961-10-11
Abstract: 980,496. Seismometers. HILGER & WATTS Ltd., and P. L. WILLMORE. Oct. 5, 1962 [Oct. 11, 1961], No. 36574/61. Heading G1J. [Also in Division H4] A seismometer comprises a mass 6 suspended through a spring system 18 and constrained by spokes 8,10 to move along a line with an additional spring 32 connected between a fixed part 34 and the mass 6 to act on the mass when it is displaced to alter its period of oscillation. The three lower spokes 8 and two upper ones 10 are supplemented by a spoke 28 connecting the mass 6 to the spring 32 which is in the form of a leaf spring attached to a quadrant 34 meshing with a gear 38 for adjusting the torque applied when the mass is displaced, but, in equilibrium position, acting perpendicularly to the instantaneous path of the mass. The mass 6 is shown as a magnet and a coil 20 is arranged to damp the vibratory system, a series of tappings allowing adjustment of the damping to correspond with the period of oscillation selected in adjusting the torque of spring 32. One or two tappings are used for coupling a galvanometer or other detector to the coil 20 to measure the output of the instrument. As shown, a compressive force in the spoke 28 will lengthen the period and a tensile force shorten the period, but by suitable design the opposite effect could be obtained. Instead of providing for co-related adjustment of the spring 32 and coil 20, a seismometer may be adapted in the workshop by replacing the spring and coil by others suitable for providing a required period of oscillation.
Patent GB-1010253-A (GB)
Title: Improvements in or relating to steroid ethers
IPC: C07J75/00
Filed: 1963-09-17
Abstract: The invention comprises dialkylamino alkyl ethers of 17b -hydroxy-androst-4-en-3-one; the corresponding 19-nor-compounds; and the 3-ethylene ketals of all these compounds.  The ketals have a D 5(6) - or a D 5(10) -double bond, the alkyl groups each contain 1 to 3 carbon atoms and the alkylene chain contains 2 or 3 carbon atoms. The invention also comprises the preparation of these ethers by reacting a suspension in a water-immiscible, inert organic solvent of an alkali metal salt of the corresponding 3ethylenedioxy17b -ol with the appropriate dialkylaminoalkyl chloride or bromide, destroying any excess alkali metal, isolating the formed 3-ethylenedioxy-17-ether and, if required, hydrolysing it under acidic conditions to give the corresponding D 4-3-one.  In the 19-nor series the starting ketals have a D 5(6)- or D 5(10)-double bond and the products are mixtures of the isomeric steroid ethers and are separated chromatographically; both on acid hydrolysis yield the D 4-3-ones.  Examples are given, and salts of the products with organic and inorganic acids are referred to.
Patent GB-1459786-A (GB)
Title: Preparation of hydrolysates of alkyl silicates
IPC: C08K3/00
Filed: 1973-08-01
Abstract: 1459786 Organic sificate hydrolysate; silica compositions; refractory compositions ZIRCONAL PROCESSES Ltd 1 Aug 1974 [1 Aug 1973] 36642/73 Headings C1A and C1J [Also in Divisions C3 and C4] A liquid/powder formulation comprises (1) the liquid hydrolysate of an organic silicate prepared by forming a homogeneous mixture of the organic silicate and water and digesting the mixture at an elevated temperature in the absence of an acidic or basic catalyst and (2) a powder insoluble in the liquid hydrolysate dispersed in the preformed liquid hydrolysate. The powder may be a refractory powder (e.g. fused alumina, calcined aluminium silicate, kyanite, corundum, fused mullite grain) or zinc dust. The homogeneous mixture may be formed with a mutual solvent for the organic silicate and water, optionally a lower aliphatic alcohol (including MeOH, EtOH, iso- and n-PrOH, iso- and n- BuOH, 2-ethoxyethanol). The organic silicate may be an alkyl silicate containing only C 1 -C 6  alkyl groups, optionally ethyl silicate. A gellable formulation may be formed by the addition of an alkaline gelation accelerator, e.g. ammonium acetate solution. The products may be used for preparing moulds and as paints.
Patent GB-858587-A (GB)
Title: Improvements in or relating to power amplifier circuit arrangements
Inventor: DUNHAM CARLTON ROSSLYN
IPC: H03F3/22
Filed: 1957-11-25
Abstract: 858,587. Supply and control system for electric furnaces. GENERAL ELECTRIC CO. Ltd. Nov. 14, 1958 [Nov. 25, 1957], No. 36720/57. Class 38 (4). A furnace 2 is fed from a supply 4 in series with a resistor 3 and a high gain valve amplifier which forms part of a regulator 1. A signal proportional to furnace current is tapped off a resistor 7 and is added to a signal proportional to furnace voltage tapped off resistor 6. The resistor 7 has a valve proportional to the range of load-resistance variation. The amplifier is controlled in an unspecified manner to keep the sum of the two signals constant. It is shown that this reduces variations in furnace power due to variations in furnace resistance.
Patent GB-1169239-A (GB)
Title: Printer.
Inventor: WILLCOX FREDERICK PRESTON
IPC: G06K15/06
Filed: 1967-08-10
Abstract: 1,169,239. Selective printing. INTERNATIONAL BUSINESS MACHINES CORP. 29 July, 1968 [10 Aug., 1967], No. 36774/67. Heading B6F. [Also in Divisions G4 and H3] Machines having type on face of continuously rotating disc.-In a printer the type faces are carried on resilient radial arms 100, Fig. 6, forming a wheel 98, an arm being deflected by a timed operation of a hammer to cause printing on a record strip 92 carried on a support 140, the print wheel and hammer assembly being displaceable across the record strip to space the successive characters, and means being provided to prevent such displacement for a given interval after each displacement. The wheel 98 rotates continuously being driven by motor 104 through shaft 106 and gears 110. Letter - spacing.-The shaft is splined so that the gear 110 can slide along it under the control of a ratchet 158 acting through a cord 148. The ratchet is operated by an electromagnet 162 with a pivoting armature. The shaft 106 carries a coded disc 172 having a pattern of holes for each character position. The outermost circle of holes act as index marks serving to ensure that the hammer operates at the correct instant. Line-spacing.-The record strip is advanced manually by knob 102 or by pulses applied to operating coil 146 of pawl and ratchet 144, 142. Carriage return.-At the end of a line the ratchet 158 is released and the print head assembly is returned to the initial position by a spring in drum 154. A dash-pot formed of cylinder 168 and piston 170 cushions the impact. Type wheel.-The heads of the radial arms, which carry the type faces are bevelled and the face of the hammer is also bevelled so that during operation there is no interference between the hammer and the two adjacent arms (Fig. 9, not shown). The resilience of the arms enables the type face to remain for an instant stationary while in contact with the record strip even though the wheel continues to rotate. The wheel 98 is slightly dished. The impression is made by discolouration in pressuresensitive paper. Control circuit.-The printer is operable by its own keyboard or by signals received over telephone lines. The keyboard, when operated may also send signals over telephone lines to operate printers at a distance. In either case the signals are entered in a store, closing a pattern of contacts which indentifies the character to be printed. The successive character patterns from the disc 172 are applied to the contacts, the outputs being gated together at 226 to operate the print magnet. Diode circuits recognize " carriage return " and " end of message " codes.
Patent GB-1305000-A (GB)
IPC: C03C3/087
Filed: 1970-01-20
Abstract: 1305000 Glass composition OWENSILLINOIS Inc 20 Jan 1970 [17 Feb 1969] 30919/72 Divided out of 1303883 Heading C1M An X-ray absorbing alkali silicate glass contains yttria and not more than 2% by weight dithia. Preferably the glass contains in percentage by weight SiO 2  45-70; Na 2 O 3-10; K 2 O 5-15; Y 2 O 3  up to 10; Al 2 O 3  0-6; BaO 0-20; PbO 0-30; CaO 0-8; MgO 0-3; F 2  0-2; LiO 2  0-2; MnO 0-2; Sb 2 O 3  0-1; CeO 2  0-1; unspecified rare earths 0-1. The glass is used to form the faceplate of a cathoderay tube. The glass may further include up to 2% Rb 2 O or Cs 2 O and colorants such as NiO and CoO, particularly to give a grey colour.
Patent GB-1364680-A (GB)
Title: Process and apparatus for drying
IPC: B01D1/18
Filed: 1971-08-05
Abstract: 1364680 Spray drying BUSS AG 5 Aug 1971 [5 Aug 1970] 36924/71 Heading B1B [Also in Division F4]  A solution, suspension or paste is dried by feeding it by means of screw conveyor 6 to rotary impeller 7 which atomizes the material radially across a horizontal housing 1 supplied through pipe 13 with hot air which dries the material and carries it in suspension to outlet 14. The hot air is given rotating turbulence by paddle cascade 26, the paddle angle and pitch being adjustable to obtain optimum flow velocity. Displacement element 17 divides the drying space into two parts, undisturbed rotational turbulence prevailing in the front part. Element 17 contains the driving mechanism 9 for the impeller 7. The housing contains a drum 10 which is rotated on hollow shaft 4 by driving wheel 11 and chain 12. The wall of the drum is cooled with cold air supplied through pipe 24. Material is prevented from sticking to the inner surface of the drum by lamellar scraping knives 19 mounted in a frame 20 of a vibrator 21. In an alternative construction, the drum is stationary and the scraping knives are rotary. The apparatus may be used for drying viscous dyestuff pastes. The drying of free-flowing solids is referred to.
Patent GB-854592-A (GB)
Title: Electric pulse generator
IPC: B23D36/00
Filed: 1956-12-04
Abstract: 854,592. Machines with permanent magnets; mounting rotors. UNITED STATES STEEL CORPORATION. Dec. 4, 1956 [April 6, 1956], No. 37004/56. Class 35. A generator for creating a sharp electric pulse at the time of cutting of a shear drum comprises a magnet 22 secured to a non-magnetic member 14 and having a pole 24 arranged during rotation of the member 14 to pass a stationary pickup head 26 which includes a coil 32 surrounding a core 28 and an enveloping magnetic shield 40 having in the side adjacent the member 14 a small opening 42 which exposes adjacent the rotative path of the magnet pole 24 an end of the core 28; means are provided to so couple the member 14 to rotate in synchronism with the shear drum that as the drum is cutting the magnet 22 passes the opening 42 and creates the pulse in the coil 32. As shown the member 14 is a ring adjustably secured by grub screws 16 to a shaft 6 carrying the drum, and the coil output leads 34, 36 may be connected to an amplifier 36. The magnetic shield 40 prevents the flux from reaching the core 28 until magnet 22 is directly under it.
Patent GB-824968-A (GB)
Title: Improvements in or relating to a switching device
Inventor: BONN THEODORE HERTZ
IPC: H03K17/62
Filed: 1956-12-04
Abstract: 824,968. Pulse gating circuits. SPERRY RAND CORPORATION. Dec. 4, 1956, No. 37042/56. Class 40 (9). Co-ordinate windings of a magnetic matrix store are each energized from a continuous supply of alternating positive and negative pulses, positive pulses being applied over a winding of one bi-stable core and negative pulses being applied over a winding of a second bi-stable core, the pre-set stable states of the bi-stable cores determining whether a pulse is applied to the co-ordinate winding or not. As shown in Fig. 5, cores 77 and 78 are associated with co-ordinate winding 75, and cores 79, 80 are associated with co-ordinate winding 76. Pulses, as illustrated, from sources PP-5 and PP-6 alternately energize windings on cores 78 and 80, and 77 and 79, respectively. If during a negative pulse from PP-6 either of the cores 77, 79 is set so that the subsequent positive pulse from PP-6 finds high impedance in the core winding, the associated co-ordinate winding remains unenergized. Any core which is not so set presents low impedance and allows passage of a positive pulse. During periods when PP-6 is negative source PP-5 is also negative and drives a selected co-ordinating winding negatively depending on the condition of cores 78, 80, as set during the preceding positive period of PP-5. In Fig. 6 a single pulse source PP-7 alternately energizes excitation windings on each one of the pairs of cores 84, 85 and 86, 87, associated with the co-ordinate windings 82, 83. Set windings are provided individual to each core but are not shown. If a core is set so as to be turned over by its excitation winding a pulse is induced in an output winding and energizes the co-ordinate winding, if not so set no pulse is induced. As shown in Fig. 2, co-ordinate windings may be driven from both ends. Windings 1 to 6 form a 3 X 2 matrix driven from wires 13, 14, 15 along one edge and from wires 16 to 19 along the other edge. Each wire 13, 14, 15 is connected to a pair of bi-stable cores arranged in the manner of Fig. 6 and can feed two coordinate windings the other ends of which are connected by lines 16 to 19 to similar pairs of bi-stable cores. To drive co-ordinate winding 1 with a positive pulse the cores 20 and 27 are set during a preceding negative half-cycle so that outputs are induced during a positive pulse. Set windings are not shown except on core 26. To drive winding 1 with a negative pulse cores 21 and 26 are set. Rectifiers associated with potential sources Œ E/2 limit the voltages applied to the co-ordinate windings. Such a matrix of co-ordinate windings may be driven along each edge by bi-stable cores arranged as in Fig. 5 (see Fig. 3, not shown) or one edge of the matrix may be driven over pairs arranged as in Fig. 5 while the other edge is driven over pairs arranged as in Fig. 6 (see Fig. 4, not shown).
Patent GB-796965-A (GB)
Title: Improvements in or relating to settling filters for liquid purification
IPC: B01D29/00
Filed: 1955-12-28
Abstract: 796,965. Filters. BOEHLER, M., and WEBER, F., [trading as BOEHLER & WEBER, KOMM.-GES.]. Dec. 28, 1955 [Dec. 29, 1954 ; May 17, 1955], No. 37058/55. Class 46. [Also in Group XXII] Elements 1, Fig. 15, may be made from a metal sheet by a rolling process, the sheet being stamped out to leave stays 5<SP>1</SP> and " laddersides " 1<SP>1</SP>. Undulations for the formation of slits 2 between adjacent elements may be pressed in at the same time. The outer edges of the sides 1<SP>1</SP> are also rounded off. Alternate elements 3 may be flat. Several elements may be compressed in a framework 9, Fig. 16, by nuts 12 on threaded tie-rods 11 passing through bores 10, liquid flowing in at the faces of the unit thus formed, and out at 13. " Halfelements," each consisting of a rod 1<SP>1</SP> with half stays 5<SP>11</SP>, Fig. 18, may be secured to form a unit by tie-rods (not shown). Several such " half-elements " may be threaded with intervening discs (not shown) onto a circular tie-rod 11, Fig. 21, to make a cylindrical unit. Several such units may be arranged concentrically, the stays 511 forming distance pieces, or several single units may be arranged next to one another, in a single outer envelope. A strip 21 of sheet metal may have both edges beaded at 21<SP>1</SP>, Fig. 38 (one edge only being shown), the strip thereafter being passed between two rollers which flatten the beads, except for regularly-spaced " studs " 25 left in the beads by depressions in one of the rollers. When elements are juxtaposed, slits 28, Fig. 38, separated by studs 25, are formed between adjacent elements. Prominences 30 and depressions 29 to prevent lateral sliding may be formed during the rolling process. The bead may be formed on the under surface at one edge and on the upper surface at the other edge Fig. 37 (not shown). Spacing between the elements may be provided by nesting U-shaped strips 31, Fig. 31, instead of by studs 25. The U-shaped strips 31 are connected to their respective strips 21 by crimping or spotwelding at 32. In a further alternative spacing between elements may be provided by lugs 34, Fig. 41, formed by partly bending back, in V-formation, spaced parts of the beads 21<SP>1</SP>. The lugs may be accommodated in depressions 35 to ensure a smooth outer surface for the complete unit. Slits 28 are formed as before. Elements similar to Fig. 15 may be formed by a drawing process, the portions 1<SP>1</SP> and 5<SP>1</SP> being formed by stamping-out as before. The sides 1<SP>1</SP> may be of circular or drop-shaped cross-section and may be thicker than the stays 5<SP>1</SP>. In a further alternative two wires may be connected by a series of apertured lugs by welding to form each element. In units embodying elements where stays (5<SP>1</SP>, 5<SP>11</SP>) are provided the " laddersides " are sufficiently flexible to allow a " return " movement of them when the pressure, on the unit, of the liquid being filtered is removed or reversed, whereupon a previously formed cake of kieselguhr or the like slides off the unit.
Patent GB-860424-A (GB)
Title: A process for producing benzene
Inventor: HAENSEL VLADIMIR
IPC: C07C5/387
Filed: 1959-11-02
Abstract: Benzene is obtained by the conversion at elevated temperature and pressure of cyclohexane and/or methyl cyclopentane in the presence of a non - siliceous catalyst containing alumina, fluorine and a platinum group metal and having a surface area of 75-150 square metres per gram.  Alumina having a greater surface area is steamed before compositing with the metal.  Preferred conditions are 320-540 DEG  C., 3-40 atmospheres, a hydrogen to hydrocarbon mol. ratio of 0.5-20 and a space velocity of 0.5-20 wt./wt./hr.  The change may be pure hydrocarbon or a fraction from a petroleum source, e.g. boiling in the range 66-85 DEG  C.
Patent GB-773323-A (GB)
Title: Improvements in or relating to the removal of dust from gases in chimneys and the like
IPC: B01D47/06
Filed: 1954-07-21
Abstract: 773,323. Metallurgical converters. BISCHOFF GES., G. July 21, 1954 [July 22, 1953, No. 37196/55. Divided out of 773,322. Class 72 [Also in Group XII] Apparatus for removing dust from gases, particularly gases from Bessemer and like converters, comprises a drop-like streamlined body 33 (Fig. 1), supported axially in a gas passage 34 and defining between itself and the wall of the passage an annular gap 36 in which there is highly turbulent flow of the gas, and a spray for moistening the dust. As shown the spray 38 directs a cone of spray upwardly and downwardly, the upwardly direction spray forming on the body 33 a liquid film which is blown off at an annular dripping edge 43. In a modification the liquid spraying may be effected from openings in the rounded end of the streamlined body. In a further modification (Fig. 3), the gas passage is-provided with a circumferential bulge 47 and the streamlined body is axially adjusted in the gas passage so that the size of the gap 36 may be adjusted. An orifice plate may be provided in front of the streamlined body or as shown in Fig. 3, an orifice plate 51 may 207 surround the tail portion of the streamlined body. The apparatus may be inserted into a suitable passage within a converter chim ney to enclose the converter mouth.