baber/WOPTO huggingface dataset:
Patent GB-946428-A (GB)
Title: Servo positioning mechanism
IPC: G11B5/55
Filed: 1961-08-24
Abstract: 946,428. Electric selective signalling systems. SPERRY RAND CORPORATION. Aug. 24,1961 [Aug. 26, 1960], No. 30631/61. Heading G4H. A servo mechanism for driving a device to a selected position comprises a source of error voltage, a source of damping voltage related to the operating speed of said servo mechanism, a source of reference voltage, means for combining said error and damping voltages to produce a combined voltage, means for applying said combined voltage to drive said servo mechanism, and means to de-energize said servo-mechanism when said combined voltage drops below said reference. The system described forms the coarse positioning system for a magnetic drum data storage head and uses the principle that when the head is both sufficiently near to its desired position and moving sufficiently slowly when the servo mechanism can be de-energized and the head will coast to the desired position. As described, in order to decide when to deenergize the servo mechanism, instead of comparing the error signal and the speed signal independently with separate reference signals, their sum is compared with a single reference signal. This is illustrated in Fig. 3,where an amplitude significant A.C. error voltage e (being the difference between desired position and actual position voltages) is rectified 44 and added to a rectified speed signal V and their sum has substracted from it a pulsed reference amplitude 56. When the resulting signal 58 crosses the zero line a threshold device 60 is triggered de-energizing the servo mechanism. Specifications 898,154 and 910,636 are referred to.
Patent GB-1047004-A (GB)
Title: Apparatus for the thermal development of exposed light-sensitive material
IPC: G03D13/00
Filed: 1964-08-04
Abstract: 1,047,004. Developing apparatus. CHEMISCHE FABRIEK L. VAN DER GRINTEN N.V. Aug. 4, 1964 [July 18, 1963], No. 30670/64. Heading G2A. In apparatus for the thermal development of photographic material, means for varying the speed at which the material is continuously conveyed through the apparatus is coupled to means for controlling the heating temperature in such a way that an increase in speed results in an increase of temperature, and vice-versa. As shown, the exposed photographic material is guided into the apparatus at 28, carried round the heating cylinder 12 by an endless band 11, and guided out again at 29. The cylinder is heated by an axially disposed element 13, energized through a circuit comprising leads 50 and a switch 23. The switch is carried by an arm 22 pivoted to a rod 16 of a low-expansion alloy fixed at one end to an end wall 2 of the apparatus. The band 11 passes round guide rollers 4, 5, 6, 7, the motive force being supplied by roller 5 which is driven by gearing from a motor 10. In series with motor 10 is a variable resistance 20, adjustable by a knob 21, so that the speed of rotation of cylinder 12 can be controlled thereby. Switch 23 rests in contact with a stud 25 on the end wall of cylinder 12, and is initially in the "closed" position so that heater 13 is in circuit with its energizing source. As cylinder 12 becomes heated, it expands axially, pushing back the arm of switch 23, until eventually it is pushed back sufficiently to operate the switch, and so break the circuit. When cylinder 12 has cooled sufficiently to contract the necessary amount, the circuit is re-established once more. If it is desired to reduce the speed at which the photographic material passes through the apparatus, resistance 20 is adjusted by knob 21 accordingly. At the same time this operates, via gears 19, 18, a rod 17 having an inclined circular guide surface 27, against which the end of arm 22 is biased into contact. This moves to the left, so bringing switch 23 closer to the stud 25. Consequently, cylinder 12 does not have to expand so much to shut off switch 23, and therefore it is maintained at a lower temperature. Correct development is thus still attained, since the slowermoving material is being heated for a longer period. Conversely, adjustment of resistance 20 to increase the speed of the material automatically moves switch 23 further away from cylinder 12, so that a higher cylinder temperature is maintained. Figs. (not shown) 4 and 5 are of alternative methods of coupling the movement of switch 23 to the speed-regulating means.
Patent GB-1098370-A (GB)
Title: Pipe cutting machine
IPC: B23K7/00
Filed: 1966-07-08
Abstract: 1,098,370. Cutting by fusion. M. ELLER. July 8, 1966, No. 30715/66. Heading B3V. A machine for cutting segments from a cylindrical pipe 8 comprises a base 5 having a chuck 6 for supporting the pipe vertically, a vertically adjustable standard 9 adapted for alignment with the pipe, a gauge plate 30 hinged to the lower end of the standard for movement in a vertical plane and arranged to be secured in an adjusted position, a cutting mechanism 38 disposed below and biased upwardly towards the gauge plate and carrying an acetylene cutting torch 54 and driving mechanism 62 engaging the underside of the gauge plate for rotating the cutting means. The standard 9 is mounted on a carriage 23 movable along fixed horizontal rails 26 and is adjustable vertically by a rack 12 and pinion (10), Fig. 5 (not shown), driven through gear-box 16 by a motor 17. A pointer 56 is used to align the axes of the pipe 8 and the standard 9. A protractor scale 33 on the gauge plate co-operates with a vertical pointer 32 for indicating the angle of the gauge plate which is locked in position by links (34), (37), Fig. 2 (not shown). Cutting mechanism 38 is mounted for horizontal rotation in bearings (42), Fig. 5 (not shown), at the bottom of a vertical rod 43 movable vertically along guide tracks (46), Fig. 6 (not shown), in the standard 9 and biased upwardly by a counterweight (51), Fig. 5 (not shown). The cutting mechanism comprises two horizontal rods 40 adjustable horizontally by rack teeth (41), Fig. 3 (not shown). One rod 40 adjustably mounts a vertical pin 53 carrying a vertically adjustable cutting torch 54; the other rod 40 carries a driving motor 57 which actuates through gearing a friction disc 63 engaging the underside of the gauge plate 30. A pair of magnet plates 64 slide on the underside of the plate to maintain the disc in frictional contact. The machine is used to cut out segments such as (64a), Fig. 8 (not shown), which are welded together to form pipe bends.
Patent GB-1120060-A (GB)
Title: Catalyst system for the preparation of cis 1,4 polybutadiene
Inventor: DIXON CHRISTOPHER GEORGE PIERS
IPC: C08F136/06
Filed: 1966-07-08
Abstract: A polymerization catalyst system for butadiene comprises (a) an organic compound of nickel, (b) a Lewis acid and (c) a boron compound of general formula MBRnH(4- n), where M is a Group I metal, R is the same or differe alkyl groups and n is 0 to 4, in which all the alkyl groups and/or hydrogen atoms are attached to the boron atom. Compound (a) may be nickel acetylacetonate, diisopropyl-salicylate or octoate.  Compound (b) may be boron trifluoride etherate or TiCl4. Compound (c) may be lithium tetrabutyl boron, sodium tetraalkyl boron compounds, sodiu  triethyl butyl boron, lithium borohydride, or sodium trialkyl hydroboron compounds.  Compound (a) may be premixed with compound (b) before (c) is added, and further butadiene may be added to the premix.  The polymerization may be carried out in a conventional "low-pressure" manner, and solvents such as hydrocarbons, hydrogenated aromatic hydrocarbons, and ethers may be used as the solvent.  A small amount of water may also be present.
Patent GB-1526599-A (GB)
Title: Process for the preparation of single cell protein
IPC: C12R1/26
Filed: 1977-07-22
Abstract: 1526599 Single cell protein HOECHST AG 22 July 1977 [24 July 1976] 30852/77 Heading C3H A strain of the species Methylomonas clara ATCC31226 is cultivated under aerobic conditions in a nutrient medium comprising a nitrogen source, and a carbon source which comprises at least one substance selected from methane, methanol and dimethylamine. The nitrogen source may be KNO 3 , (NH 4 ) 3 PO 4 , (NH 4 ) 2 SO 4  and NH 3 . The product of cultivation, in addition to single cell protein; may include fats, carbohydrates and vitamins. Examples describe the preparation of materials containing about 80% protein; 8-10% nucleic acids, 5-10% crude fat and 5-10% crude oil.
Patent GB-390765-A (GB)
Title: Device for tightening previously fastened or held wires
IPC: B65B13/02
Filed: 1932-11-02
Abstract: 390,765. Wire strainers. GERRARD WIRE TYING MACHINES CO. PROPRIETARY, Ltd., 119, Hawke Street, West Melbourne, Victoria, Australia. Nov. 2, 1932, No. 30902. Convention date, Dec. 11, 1931. [Class 45.] A device for tightening previously fastened wires, such as those secured around boxes &c., fencing wires or concrete reinforcement wires, comprises a pair of discs 6 having projecting teeth 12, the teeth of one disc entering the spaces between those of the other disc and not touching the other teeth. Certain of the teeth 16 are shortened to permit the insertion and removal of the wire and the discs are rotated by intermeshing gear wheels 21 operated by levers 26, thereby crimping and so tightening the wire.
Patent GB-168269-A (GB)
Title: Improvements in and relating to brakes for davits
IPC: B63B23/18
Filed: 1920-11-02
Abstract: 168,269. Schat, A. P. Nov. 2, 1920. Davits. - The rotary speed of davits tending to swing out automatically is controlled by a brake comprising at least two brake shoes interconnected and adapted to move simultaneously into the braking or releasing position. The substantially parallel levers 7, pivoted at 9, are fitted with diametrically opposed brake shoes 3 for engaging the davit brake drum 2, and connected by toggle levers 11 operated by a screwed spindle 14. In a modification, instead of the levers being pivoted at 9 and coupled by toggle levers, they are coupled by a pair of screwed spindles, each screwed with right and left hand threads, the levers being operated by rotation of the screwed spindles.
Patent GB-1005162-A (GB)
Title: Improvements in or relating to the electrolytic precipitation of copper
IPC: C25C1/12
Filed: 1963-08-07
Abstract: High grade cathode copper is obtained by electrolysis of an electrolyte solution of dissolved copper until substantially all of the copper has been recovered from solution with the last portion recovered forming a loose and darkened deposit, removing the spent electrolyte, and repeating the electrolysis a number of times each time with a fresh batch of electrolyte, whereby the loose and darkened deposit from each batch end becomes consolidated and refined by electrolysis of the following batch, and terminating the final electrolysis before the loose and darkened deposit is formed. Typically the non-ferrous metal content is extracted from roasted iron pyrites and produces a sulphate solution containing 40 g./l. Cu, 20 g./l. Co, 7.5 g./l. Zn and 2.5 g./l. Ni.  By electrolysis at a CCD of 10 ASF and an applied P.D. of 2 volts with air agitation or circulation of electrolyte, the copper concentration of each batch is reduced to 0.05 g./l. with production of a loose and darkened end deposit. By terminating the final batch electrolysis before this undesirable deposit is formed copper of 99.86% purity is obtained containing only 0.019% Co, 0.0015% Zn and a trace of Ni. The electrolyte from the last batch of a series forms at least part of the first batch of the next, and the spent electrolyte from each batch may be further treated to recover the other metals in it.
Patent GB-1520251-A (GB)
Title: Protection of a recording medium
IPC: G12B17/00
Filed: 1975-07-14
Abstract: 1520251 Protecting magnetic recording media EMI Ltd 14 July 1975 [13 July 1974] 31144/74 Heading B8M A recording device comprises reels 11 and 12 having hubs 13 and 15 which are preferably made of zinc or magnesium based alloys, a metal magnetic recording tape 2, preferably made of "VICALLOY" (Registered Trade Mark) which is an alloy of iron, cobalt, vanadium elements and supported on the reels 11, 12 in contact with the hubs 13, 15 by having their ends attached in. angled slots 16, whereby when the tape 2 and the reels 11, 12 are immersed in an electrolytic medium such as sea-water the hubs 13, 15 being of higher electropositive material relative to the material of the tape 2 act as a sacrificial electrode, thereby delaying the corrosion of the tape 2. The device is used in the "black box" of an aircraft. The hubs 13, 15 may be made of different materials provided they are more electropositive than the material of the tape 2. The hubs can be protected against too rapid dissolution by covering part of the surface with an insulator such as a plastics film or the hub material may be such that it is slightly more electropositive than the material of the tape 2.
Patent GB-894468-A (GB)
Title: Cabinet mounting system suitable for electronic components
IPC: H05K7/14
Filed: 1960-09-09
Abstract: 894,468. Electrical equipment panels. NIPPON ELECTRIC CO. Ltd. Sept. 9, 1960 [Sept. 16, 1959], No. 31177/60. Class 37. An electrical cabinet mounting system comprises a front panel, a pair of angle-bars extending rearwardly from opposite diagonal corners of the block of the front panel, a rail attached to each of the angle-bars and extending parallel therewith, a component mounting panel disposed in a vertical plane between said angle-bars and having upper and lower plates provided with openings therein for air convection and rail guides mounted within the cabinet so that the rails may slide therein. The cabinet drawers consist of a front panel 2 having handles 1 and angle-bars 3 extending from diagonally opposite corners of front plate 2, rails supported by the angle-bars 3 and co-operating with rail guides 8 provided along the cabinet structure 9, and a component panel 5. The component panel 5 having end surfaces in the form of parallelograms is mounted with its VF surface in a vertical plane, upon the angle-bars 3 by means of screws. Holes h are provided in the upper and lower plates of the mounting panel 5 so as to provide air cooling by natural convection, the air flow being indicated by the dotted arrows on the Figure. Electronic components are mounted on one side of the panel 5 and the associated wiring on the other side.
Patent GB-231788-A (GB)
Title: Improvements relating to the manufacture of ammonium sulphate
IPC: C01C1/242
Filed: 1924-12-30
Abstract: 231,788. Gill, H. A., (Soc. des Fours Ó Coke Semet-Solvay et Piette Soc. Anon.). Dec. 30, 1924. Ammonium sulphate.-Crude ammonium sulphate crystals, after draining, are washed with successive saturated solutions of ammonium sulphate, each washing solution being more pure than the preceding, and each liquor obtained on filtration being employed in succession for washing a subsequent batch of crystals. The excess of washing liquor is returned to the saturator and for the final washing a freshly-prepared saturated solution of ammonium sulphate, preferably rendered alkaline by means of ammonia, ammonium carbonate or bicarbonate is used. In the preferred arrangement of plant, crystals removed from a saturator 1 are separated from acid liquor in a drainer 2 and are then suspended in a filtrate from a previous washing drawn from a tank 4. The suspension is passed to a mixer 5 and after being agitated is separated in a rotary vacuum filter 6, the filtrate passing to the tank 4. The crystals are next sprayed from a nozzle 7 with a liquor obtained from a tank 9, the filtrate also passing to the tank 4. Finally the crystals are sprayed from a nozzle 8 with the freshly-prepared saturated solution of ammonium sulphate, the filtrate passing to the tank 9. The neutralized salt is removed by means of a scraper 10 and passes to a screen 11 which directs it into a drier 12.
Patent GB-1309036-A (GB)
Title: Method and apparatus for the bulk processing of hides or the like
IPC: C14B1/00
Filed: 1971-07-02
Abstract: 1309036 Rotary drum apparatus CHALLENGE-COOK BROS Inc 2 July 1971 [19 Aug 1970] 31239/71 Heading C6C [Also in Division D1] Batch processing of hides or like sheet materials of a porous and absorbent nature is carried out in a drum 10 rotatable about an axis which is inclined, e.g. at 16 degrees, to the horizontal and having a pair of internal spiral fins 24, with perforations 30 and extending from the upper, open end 15 to a perforated partition 22 near the inner end 14. The drum, which may be filled with liquid to a level 23, has an inlet 54 for treatment medium and an inlet (not shown), for water, and an outlet 37 which extends to the bottom of the space behind the partition 22 and passes through a support bearing 17. The end 15 of the drum is supported by a roller 16 which may be adjustable vertically. The arrangement allows various treatment media to be admitted to and withdrawn from the drum so that the operations of brine-curing, soaking and washing, unhairing, bating, pickling, tanning, colouring and fatliquoring may be performed successively on a batch of hides. When the drum is rotated in one direction those hides nearer the bottom of the drum are conveyed towards the partition 22, and during such conveyance are pressed by the weight of hides above them against, and are thereby worked by, the beaded edges 31 of the fins 24 and beaded edges 33 of lateral projections 29 from the fins. As they reach the inner end of the drum they are squeezed against the partition 22 and subjected to a lifting and scrubbing action against the surface of the partition which has parallel corrugations 35. Rotation of the drum in the other direction causes the hides to be discharged through the open end 15. Liquid withdrawn from the outlet 37 may be discharged to a sewer or diverted to a holding tank for further use. Treatment medium is supplied to the inlet 54 through a heater and pump which may draw from a supply tank or from the outlet 37. An electronic pH meter, monitors the medium draw from the supply tank and that discharged through the outlet 37.
Patent GB-1485340-A (GB)
Title: Process for the determination of thyroid hormone
IPC: G01N33/78
Filed: 1975-07-25
Abstract: 1485340 Determination of thyroid content utilizing pepsin digestion CENTER FOR LABORATORY MEDICINE 25 July 1975 31257/75 Heading G1B A process for the determination of thyroid hormone content of a blood serum sample comprises mixing with a sample of blood serum pepsin at a pH of about 1À0, incubating the sample for a period of time and at a temperature sufficient to allow the pepsin to digest the thyroid hormone binding protein in the serum, adjusting the mixture to a pH at which the pepsin is inactive and assaying the mixture for the released thyroid hormone. The pepsin may be in the form of an aqueous solution containing 6À0N.HCl or alternatively glycine hydrochloride, glutamic acid hydrochloride or aspartic acid hydrochloride, or pepsin and an acid may be included in a tablet comprising pepsin, glutamic acid hydrochloride and lactose. A process utilizing the invention in radioimmuno assay of I-125-thyroxine is described.
Patent GB-299712-A (GB)
Title: A new or improved system of electric signalling for automatically insuring safety in railroad traffic
IPC: B61L3/18
Filed: 1928-10-29
Abstract: 299,712. Tasquin, A., and Delfosse, (nÚe Foy), R. Oct. 29, 1927, [Convention date]. Electrical systems, automatic; track apparatus actuating signals on trains and for stopping trains; track apparatus actuating signals other than on trains.-Energy from a train-carried generator S is supplied over a pole-changing switch 7 and a brush to a sectional conductor 1 on the left side of the locomotive in the direction of motion. The conductor 1 is connected by a. cross conductor 3 to a conductor 2 on the right side of the track which engages a brush on a following locomotive to energize lamps 11, 11', a bell 19 and a valveoperating magnet 20 which supplies compressed air to a cylinder operating the throttle and brake valves. At curves or other places requiring lowspeed running, an auxiliary conductor 4, placed on the right side of the track and parallel to the conductor 1, is connected to it and engages an extra brush on the locomotive to energize slowspeed signal lamps 12, 12'. Change-over switches 10, 10<1> are fitted to provide for reverse running of the locomotive. At points, the auxiliary conductors along the branch roads are connected and disconnected by the movements of the points.
Patent GB-485199-A (GB)
Title: Improvements relating to the treatment of fabrics having a basis of organic derivative of cellulose
IPC: D06M15/423
Filed: 1936-11-16
Abstract: Fabric comprising organic derivatives of cellulose is impregnated with a resin-forming solution, dried and a water-insoluble resin formed on the fabric, which is subjected at any stage after the drying to a mechanical treatment adapted to break up the film of resin-forming matter on the outside of the fabric.  The mechanical treatment may consist in passing the fabric between pairs of rollers, one of each pair being provided with studs and the others being resilient, or between pairs of rollers provided with relatively staggered projections; or the fabric may be drawn over a sharp edge or blade which may be moved relatively to the fabric; or the fabric may be subjected to a beating operation, or crumpled and passed between rollers repeatedly.  After such mechanical treatment the disintegrated coating is removed, e.g. by brushing or blowing.  Any synthetic resin may be employed, particularly formaldehyde-urea.  In an example, a cellulose acetate fabric is swollen in acetone, impregnated with a solution of urea-formaldehyde pre-condensate, dried, and passed between pairs of driven wooden rollers having metallic studs, brushed and heated to 120-180 DEG  C. for 10 mins. The mechanical treatment may be effected after the heat treatment. In another example, a saponified cellulose acetate fabric is soaked in a solution of urea containing some boric acid, dried and treated with formaldehyde at 100 DEG  C. for 2 hrs., rinsed and mechanically treated as in the foregoing example.  According to the Provisional Specification, the mechanical treatment may comprise passing the fabric between a pair of rollers rotating at different speeds, and the synthetic resin may be replaced by ester resins, rubber, guttapercha or balata.  Specification 485,372 is referred to.
Patent GB-658403-A (GB)
Title: Improvements in or relating to a mold forming apparatus
IPC: B22D13/10
Filed: 1949-12-07
Abstract: 658,403. Moulding pipe-like graphite moulds for casting metals. ROLLINSON, E. W. (Herman Pneumatic Machine Co.). Dec. 7, 1949, No. 31393. [Class 87 (ii)] [Also in Group XXII] In forming a graphite or like mould by pressing a slender flexible mandrel against the inner face of a hollow mass, within a flask, to compact and shape it, e.g. as described in Specification 650,683, [Group XXII], the mandrel is given such a form that when it flexes in use the part in contact with the graphite has the form desired. Fig. 3 shows such a mandrel for forming the mould for a socketed cast-iron soil pipe.