baber/WOPTO huggingface dataset:
Patent GB-1294585-A (GB)
Title: Improved photomasks and method of fabrication thereof
IPC: G03F1/00
Filed: 1970-02-02
Abstract: 1294585 Photo-masks RCA CORPORATION 2 Feb 1970 [8 May 1969] 4856/70 Heading G2M [Also in Division B6] Photo-masks for use in production of semiconductor devices comprise a transparent body having a pattern of multi-layer opaque elements on one surface; each element comprises in order (1) a first layer which can be etched by a substance which will not etch the body, (2) a second layer which can be etched by a substance which does not etch the first layer, and (3) a third layer which can be etched by a substance which etches the first layer but not the second layer, the edges of the second layer in each element being generally spaced inwardly from the edges of the first and third layers. A photo-mask may be prepared by (a) coating a transparent substrate with (1) a Cr layer, and (2) a Cu or SiO 2  layer, (b) forming a first photo-resist pattern on (2), (c) using a mixture of 32 parts by wt NH 4 F, 60 parts of deionized water and 1 part conc. HF to etch the unprotected areas of (2) with undercutting of the protected areas so that the pattern produced in (2) is smaller than the photo-resist pattern, (d) removing photo-resist (e) coating with Cr, (f) forming another photo-resist pattern identical to the first but using a different master, (g) etching away the unprotected Cr with an aqueous solution containing 5% KOH and 10% K 3 Fe(CN) 6 , and optionally (h) removing any unwanted Cr spots by forming a third photo-resist pattern, applying a solvent for Cr, and removing the photo-resist.
Patent GB-704605-A (GB)
Title: Improvements in fire alarm apparatus
Inventor: REECE MICHAEL PETER
IPC: G08B17/06
Filed: 1950-03-01
Abstract: 704,605. Fire alarm apparatus. PYROBAN DEVELOPMENTS, Ltd. Feb. 28, 1951 [March 1, 1950], No. 5142/50. Addition to 632,279. Class 118 (1). The resistor elements in a fire alarm apparatus as claimed in the parent Specification are housed in a tube A of heat insulating material, element a being of bare wire in a part of the tube having perforations a' to allow air circulation, and element d being lagged with material such as glass wool and tightly wound in the upper portion of tube A. Alternatively, windings a and d may be placed in separate tubes located at different points.
Patent GB-594238-A (GB)
Title: Improvements in or relating to electric power systems for ship propulsion and other purposes
IPC: H02P9/06
Filed: 1945-03-02
Abstract: 594,238. Transmitting mechanical power. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 2, 1945, No. 5245. Convention date, June 8, 1943. Drawings to Specification. [Class 38 (iv)] Synchronizing.-A system for ship propulsion and other purposes comprises a motor operating as induction motor and synchronous motor and two alternators which are arranged to be synchronized with each other. The system comprises a controller for each generator, a motor controller and a speed controller all operable independently of each other. The motor controller provides three starting positions and one running position for each direction and is associated with an electromagnetic interlock preventing opening of the motor circuit while a generator field is energized. The speed controller provides two starting positions, a range of low-speed positions of induction motor operation and a range of high-speed positions with synchronous motor operation ; over these two ranges speed variation is produced by a mechanical connection of this controller to the governor controls of the prime movers accompanied by suitable variation of the excitation of the generators. A latch is provided which the operator must release to enable the controller to move to induction motor positions after synchronous operation. A mechanical interlock between motor and speed controllers prevents movement of the motor controller unless the speed controller is in a slow speed position and prevents movement of the speed controller if the motor controller is in any of its start positions. After starting and connecting the first generator to bus-bars common to the generators and to the motor, the three position generator controller being in its " run " position, the controller for a second generator is moved from its " off " to its " start " position to energize solenoids, changing the speed setting of the prime movers to reduce their speeds, to short-circuit resistance in the field circuit of the running generator, to connect a resistance across the field winding of the incoming generator and to connect the armature thereof to the bus-bars. By these means the incoming machine runs as an induction motor up to near synchronous speed, whereupon its controller is moved to the " run " position in which the original speed setting of the generators is restored, both field windings are given normal excitation and the generators synchronize. The speed controller is arranged to increase the speed of the prime movers while the motor is going from induction motor to synchronous motor operation.
Patent GB-752114-A (GB)
Title: Novel salts of ª -n-morpholinoethylmorphine and their production
Inventor: STERN EDWARD SEVERIN
IPC: C07D489/04
Filed: 1954-02-23
Abstract: The invention comprises the salts of b -morpholinoethyl - morphine (see Specification 680,952) with 2 mols. of an acid of the formula HOOC-(CHOH)n-COOH, where n is 0-4.  Examples show the preparation of the bis-acid oxalate, tartronate, tartrate and mucate by addition of the base to a warm aqueous solution of the acid, the salt crystallizing on cooling.  In a further example a benzene solution of the base is extracted with warm aqueous tartaric acid and the salt crystallized from the aqueous phase.
Patent GB-773592-A (GB)
Title: Shell mould, hollow core, or thin-walled moulding and methods for the production thereof
IPC: B29C43/00
Filed: 1954-02-23
Abstract: 773,592. Moulding-processes. MOLLER, E. A. T., RUUS, A. M. B., and JENSEN, W. H., [trading as MOLLER & CO., V. A.]. Feb. 23, 1954 [Feb. 26, 1953], No. 5319/54. Class 83 (1). In the manufacture of shell-moulds and cores, or other thin-walled mouldings, of a discrete material bound with a thermo-setting binder, the pattern, before the application of said material, is coated with a thin smoothing layer consisting of a mixture of a very fine-grained material and a thermo-setting binder. The smoothing layer may comprise kaolin, zirconium silicate, silicon dioxide, aluminium oxide, zirconium oxide and other high-melting- point metal oxides, metal carbides, high-melting-point metal, sillimanite, graphite or firebrick. In one example a heated pattern is coated with a thin layer of finely-ground material and a thermo-setting binder and then a layer of discrete material with a thermosetting binder, and the two layers left to harden in contact with one another, the binder of the primary layer being slower-setting than that of the second layer. The primary layer may be applied in a liquid or semi-liquid state as by spraying, atomization or dipping, or in a solid state as by atomization, with superheated steam as a pressure medium. The binder may be a liquid phenol-resin or a solution of pulverized phenol-resin or cresol-resin in ethyl alcohol, or a mixture of the powder with solid pulverized binding agent suspended in a diluting agent, such as alcohol. In a further example, the investments are heated and applied to an unheated pattern, the whole being further heated, if necessary, to complete the setting of the two layers. The invention is stated to be applicable to the production of articles produced from discrete material bound together and given a smooth surface, e.g. dolls'-heads, ornaments, decorations, &c. The secondary layer for shellmoulds may be sand, metal, metal-oxide or graphite grains or mixtures thereof, bound with a binding agent. Specification 725,470 is referred to. Reference has been directed by the Comptroller to Specification 726,739.
Patent GB-465759-A (GB)
Title: Improvements in or relating to means for conveying fibrous or granular material in an upward direction
IPC: B65G65/00
Filed: 1936-02-22
Abstract: 465,759. Delivering material from hoppers; conveyers. LEGG, O. Feb. 22, 1936, No. 5375. [Class 78 (i)] Fibrous or granular material is conveyed upwards from a hopper 1 by an endless ribbed belt 3 passing into and through the hopper, pivoted plates 7, 9 being positioned normally to close the sides of the opening in the hopper for the passage of the belt, these plates being pivoted upwardly by the ribs 5 and arranged so that the opening is always closed by one of them. Any material falling on to the plate 9 gravitates against the belt and is carried upwards by an adjacent rib 5. The ribs may have flat upper surfaces or be trough-shaped as shown. A horizontal belt may extend across the bottom of the hopper when this is flat, to convey material to the ribs 5. This belt may constitute the bottom of the hopper and may convey material into the hopper through an aperture in the side thereof opposite the belt 3.
Patent GB-649647-A (GB)
Title: Improvements in or relating to viners
IPC: A23N15/10
Filed: 1948-02-24
Abstract: 649,647. Threshing machines. CHISHOLM-RYDER CO., Inc. Feb. 24, 1948, No. 5454. Convention date, July 27, 1940. [Class 58] In a viner for threshing peas &c. comprising a screened reel R having lifting ribs 133 and rotatable about a tubular shaft 30 on which also rotates a beater cylinder 35 provided with beaters 79, means for adjusting the angle of the beaters are provided as are also outside the reel two arcuate plates 150, 151 hinged together at 152 and concentric with the axis 30, the plate 151 being formed at its lower end into an arcuate shelf 153, arms 161 carried by the reel and adapted to sweep the plates to remove any threshed material on to a conveyer 175 agitated by means of a triangular roller 173 against a beam 176 so that the peas. beam &c. fall down its slope and the threshed vines are carried over the triangular roller. The shaft 30 is provided with two end spiders 40 between which are located six other spiders, 42, Fig. 7, the former comprising a hub 52 from which three tubular arms 53 radiate, Fig. 3, and the latter a hub 62 and three tubular arms 63, Fig. 8. In bores 56 or 66 of the arms 53, 63 are held tubular supports 75 having a flange 78 to which the beater 79 is attached. The beaters of spiders 40 and some of the spiders 42 may be individually adjusted to any desired angle. Others of spiders 42 may be adjusted together by means of a wheel 111, Fig. 5, rotating a rod 105 within the tubular shaft 30 which is attached to members 90, 96 slidable on the shaft joined by rods 100 which pass the corresponding side of each arm 63 of each of the spiders 42 and are secured to sleeves 88 of the beaters required to be adjusted.
Patent GB-936891-A (GB)
Title: Improvements in or relating to radio frequency heating apparatus
Inventor: SPASH DAVID ISAAC
IPC: H05B6/76
Filed: 1961-02-14
Abstract: 936,891. Couplings. RADYNE Ltd. May 9, 1962 [Feb. 14, 1961; Jan. 12, 1962], Nos. 5464/61 and 1257/62. Addition to 909,009. Class 38 (1). Interference from a high frequency heating apparatus is reduced by providing it with a casing 8 and a cover 5, the casing carrying a stainless steel tube 15 fixed to a lip 7 and the cover carrying a channel 4, 6 containing springs 9, 10 which contact the tube 15. The springs tend to push the cover upwards but it is held down by an electromagnetic catch 11. In a modification, Fig. 2 (not shown), the tops of the springs are bent towards each other to increase the separating force. In a further modification, Fig. 3 (not shown), the tube 15 and the lip 7 are replaced by a tongue of tapered crosssection. The springs may be mounted on the lip 7 instead of the channel or both channel and lip may be provided with springs. Specification 622,774 also is referred to.
Patent GB-796395-A (GB)
Title: Improvements in or relating to process for the preparation of anthraquinone
Filed: 1957-02-18
Abstract: Anthraquinone is prepared by oxidizing anthracene in the liquid phase with concentrated nitric acid at a temperature of above 150 DEG  C. The reaction may be carried out using liquid anthracene or by dissolving the anthracene in an organic solvent which is relatively inert to the oxidizing effect of nitric acid at elevated temperatures and which has a boiling point of over 150 DEG  C.  Suitable solvents are nitrobenzene, chloro and dichlorobenzene and nitrochlorobenzene. The nitric acid may be added by itself or dissolved in one of the specified solvents.  When the reaction is complete the mixture is cooled to 20 DEG  C. when the anthraquinone crystallizes out.  In examples: (i) 95.8 per cent anthracene is oxidized with 98 per cent nitric acid at 220 DEG  C. in the absence of a solvent; (ii) as in (i) but using nitrobenzene as solvent and a reaction temperature of 195-200 DEG  C.; (iii) as (ii) but using 84.7 per cent anthracene and a reaction temperature of 175-85 DEG  C.; (iv) as (ii) but using 92.3 per cent anthracene and a reaction temperature of 160 DEG  C.
Patent GB-648916-A (GB)
Title: Improvements relating to overload protective systems for x-ray generators
IPC: H05G1/54
Filed: 1948-02-24
Abstract: 648,916. Protective cut-out arrangem e n t s. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Feb. 24, 1948. No. 5478. Convention date, Oct. 15, 1945. [Class 38(v)]  In an overload protective arrangement for an X-ray tube, a biassing voltage derived from the anode-cathode circuit of the tube is applied to the grid of a gas-filled triode in opposition to a fixed bias-voltage so that when an overload occurs, the net bias voltage is changed sufficiently to permit the triode to conduct and operate a protective relay. The tube 1 is supplied by a transformer 4 having its primary winding 5 applied by an alternator 21 with a field winding 22 under the control of a relay 24. The high tension circuit of the tube 1, which has its anode 3 earthed, is completed from the transformer secondary winding 6 through a filter 13, which byepasses the alternating current component directly to earth. The circuit for the direct-current component is. then completed through an electromagnetically operated switch 14, through a changeover switch 16 and thence through either of a pair of micro-ammeters 11 and resistances 18 to earth. The protective arrangement indicated at 19 comprises a gas-filled triode 39, the operating potentials of which are derived from a transformer 28, rectifier 30 and a filtering and regulating circuit indicated at 33. The grid of the triode 39 is connected to earth at 41 through a condenser 42 and obtains its fixed bias voltage by virtue of the connection 45 from the cathode of the triode to an adjustable tapping on a potentiometer 38. The grid is also connected to a point 44 so that a biassing voltage is derived from the circuit of the X-ray tube, this voltage being the drop across either of the meters 11 and its resistance 18. When the system is in normal operation, the triode 39 is biassed to cut-off and a condenser 46 in the anode circuit of the triode is charged. If the current through the selected micro-ammeter 11, i.e. the current of the tube 1, exceeds a predetermined value, the voltage drop across the selected resistance 18 and meter 11 is sufficient to reduce the grid bias of the triode 39 so that the triode fires, enabling the condenser 46 to discharge through the triode and a relay coil 47. The relay closes its contacts 48, which shortcircuit the winding 25 of the relay 24, which opens to interrupt the circuit of the alternator field 22 and reduce or cut-off the operating power supplied by the transformer 4. When the condenser 46 has become fully discharged, the relay 47 opens, to permit the restoration of the field circuit. The relay 47 in addition to or instead of controlling the relay 25, may control the switch 14 or a contactor in the primary circuit of the transformer 4.
Patent GB-128161-A (GB)
Title: Improvements in and relating to Cartons & the like.
Inventor: HEARN JOHN EDWARD
IPC: B65D3/28
Filed: 1919-03-05
Abstract: 128,161. Hearn, J. E. March 5, 1919. Boxes designed to be of variable capacity; boxes made by bending sheet material.-A carton &c. for hats and other articles comprises a body formed by bending a strip a of material to cylindrical shape, the overlapping ends b, c being secured together by loops d on one end entering slots e in the other and by a pin inserted through the loops. Several series of slots are provided, as shown, so that variation in the size of the body may be effected. The open ends are closed by lids or covers of the required sizes.
Patent GB-459819-A (GB)
Title: Process for stabilising cellulose esters
IPC: C08B3/28
Filed: 1936-02-24
Abstract: Cellulose esters are stabilized by treatment with the vapours of organic liquids, preferably at temperatures of above 50 DEG  C. and either in the saturated or in the super-heated state.  The treatment may be carried out under increased or decreased pressure.  In examples, (1) cellulose nitrate is exposed to the action of the vapours of ethyl alcohol and benzol at 100 DEG  C. under a pressure of 2 atmospheres, and (2) cellulose acetate is treated in a centrifuge with the vapours of benzol at 120 DEG  C. and 3 atmospheres pressure.  Specification 377,313 is referred to.
Patent GB-1534476-A (GB)
Title: Accounting means for use with vending machines
IPC: G07F9/08
Filed: 1977-02-10
Abstract: 1534476 Vending apparatus H R ELECTRONICS CO 10 Feb 1977 [20 May 1976] 05542/77 Headings G4D and G4V A vending machine is provided with means which keeps a running total of sales from the machine. The vending machine (not described) produces on lines 10-18 a digital signal representing the value of an article sold and at 21 an enabling signal when the article is dispensed. The counter 20 is preset to the value and is then counted back to zero by clock 24 pulses; the clock is disabled when the counter reaches zero. The pulses from clock 24 are also counted by a second counter 28 which thus maintains a total sales value which can be read out 30 to a digital display, tape recorder or remote computer installation monitoring a number of such vending machines. In another embodiment (Fig. 2, not shown) the value is added directly into an accumulator (41).
Patent GB-1452173-A (GB)
Title: Method and apparatus for surface-treating a metal wire metal extrusion of other elongated metallic material
IPC: B21C43/04
Filed: 1974-02-07
Abstract: 1452173 Treating elongated material; broaching; drawing KABEL-UND METALLWERKE GUTEHOFFNUNGSHUTTE AG 7 Feb 1974 [10 Feb 1973] 05684/74 Headings B3A B3L and B3P Elongated metallic material, e.g. a wire or extrusion, is supplied with an evaporating lubricant, e.g. alcohol, and passed through a guide 8 before it is reduced in cross-section and pared, the latter operation producing parings which are detached at points at least 5 mm. from the surface of the material. A wire, e.g. aluminium, is reduced 5% in area by a drawing die 9 before its surface is cleaned by a parer 16 and enveloped with a copper strip. The die 9 and guide bushing 8 are mounted in bushings 10 and 7, the latter of which is provided with oblique surfaces engaging similar surfaces of guide plates 4a, 4b. The latter are axially movable by adjusting spindles 5 to enable the drawing die 9 to be adjustable in position transverse to the drawing direction. A stationary parer 16 is mounted not more than 6 mm. behind the drawing die 9 in a recess in a bushing 15 on which is rotatably mounted a sleeve 26 carrying cutters 30, 31 for detaching the parings. The sleeve 26 is driven via a belt 28 by a motor (27), (Fig. 2, not shown), which is carried by a pivotable mounting (35) to enable the belt 28 to be tensioned. The bushings 8, 10, are provided with lubricating passages (shown dotted) whilst the bushing 15 and the parer 16 are provided with lubricating and/or cooling passages 17. The die 9 and parer 16 are mounted in a housing 2 which has a transparent cover 1 and which may be supplied with inert gas.
Patent GB-124882-A (GB)
Title: Method of and Apparatus for Pressing Cloth or the like.
Inventor: PETH HERMAN WILLIAM
IPC: D06F69/04
Filed: 1918-04-03
Abstract: 124,882. Peth, H. W. April 3, 1918. Ironing-machines with hand-operated flat-irons; ironing, steaming and damping apparatus for.- Parts of garments, particularly the seams and cuffs of sleeves and trouser legs, are laid upon a fixed steam-heated bed 3, Fig. 1, and are pressed by a steam-heated hand-operated iron 6 provided with perforations in the base through which steam may be admitted to the work during pressing, under the control of a valve having a handle 30 within the handle 9 of the iron. The iron is pivotally mounted within the end of a link 11 connected by a link 12 with a vertically movable member 13. Steam is supplied to a chamber 14, Fig. 3, in the iron through a supply pipe 17 and a longitudinal pipe 15. The steaming valve 28 is normally held closed by a spring 31, and the steam issues through perforations 24 in the central part of the base of the iron. Steam passes from the heating-chamber of the iron to the bed through a pipe 19, 20, and is discharged, together with water of condensation, through a pipe 23 at the lowest point of the sloping bottom of the bed. Hollow parts such as sleeves are passed over a flat plate 34, Fig. 7, pivoted to a clamp 36 and adapted to be raised bv a treadle 37. Sleeve cuffs and similar parts are placed over pivoted plates 40, Fig. 8, adapted to be raised by a treadle 45 and links 44, 43. Steam may be admitted to the work from the interior of the bed.
Patent GB-675400-A (GB)
Title: Improvements in amplitude-limiting circuits
IPC: H03G3/22
Filed: 1950-03-07
Abstract: 675,400. Valve limiting circuits; frequency modulation. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 7, 1950 [March 10, 1949], No. 5718/50. Classes 40 (v) and 40 (vi). Oscillations such as F.M. signals to be amplitude-limited are applied to the grid of a valve 2, the output being rectified by diode 5 and applied to the grid in such a manner as to cause the grid to become more positive with increasing output signal, thereby increasing the damping on the preceding tuned circuit 3. The network 6 is given a time-constant less than that of the highest modulating frequency while a circuit 7 of large time-constant is also provided, across which an A.G.C. potential is developed. In a modification, Fig. 2 (not shown), the diode 5 is fed over a transformer.
Patent GB-465382-A (GB)
Title: Improvements in or relating to sealing devices for rotary kilns, driers and the like
IPC: F27B7/24
Filed: 1936-02-26
Abstract: 465,382. Stuffing-box substitutes for rotary kilns. VICKERS - ARMSTRONGS, Ltd., and SKY, J. D. Feb. 26, 1936, No. 5743. [Class 122 (v)] The seal between the fixed and moving parts of a rotary kiln is made by a flexible tubular member such as the fabric band 12, and a rigid co-operating element 18. As shown the band is secured at one edge between rings 13 on the fixed head 11 of the kiln, and at the other by tensioning hooks 15 to a ring 16, the rigid element consisting of a T-section circumferential rib on the kiln. The band may be of metal or fabric, or a combination of the two, e.g. of fabric reinforced by metal over the contacting area, and the operative surface of the rigid element may be grooved to hold a lubricant. The band is made sufficiently wide to allow of relative axial displacement between it and the rigid element without breaking the seal. In a modification, Fig. 2 (not shown) the band is carried by the kiln, and the co-operating rib 18 on the fixed head operates on its outer surface.