baber/WOPTO huggingface dataset:
Patent GB-1520781-A (GB)
Title: Electrodeposition of metals
IPC: C25C1/00
Filed: 1975-07-09
Abstract: 1520781 Electro-deposition of metals NIPKI PO TZVETNA METALURGIA 9 July 1975 [10 July 1974] 28950/75 Heading C7B In the electro-deposition of metals (e.g. Ni, Zn) using periodically reversed current, two baths are connected such that when reversed current flows through one bath, the same current flows through the second bath in the forward direction. In Fig. 1 two rectifiers 1, 2 are fed from a D.C. source and connected with two groups 6, 7 of electrolyte baths whose cathodes are connected via common diode 8 to point 12. Thyristors 3, 4 are controlled by 5. In the cycle of operations (a) both rectifiers are on and both thyristors are off giving normal plating (b) only rectifier 1 is on and thyristor 4 is on giving reverse current in bath 7 and normal plating in bath 6, (c) only rectifier 2 is on and thyristor 3 is on, thus reversing the plating sequence of (b). Between each of steps (a), (b) and (c) both rectifiers are briefly off, allowing transients to die away. The whole cycle may recur 1-8 times per minute, with a reverse c.d. 0À5 - 1.2 times the plating c.d. and a reverse current duration of 0À5 - 6% of the total. A c.d. range of 100 - 1500 A/M<SP>2</SP> and a working cycle of 12 - 144 hours are specified. Cathodes of Zn, Cu, Ni, Mo, Pb, Al, stainless steel, Ti and alloys thereof, and anodes of cermet, Pb-Ag alloy and graphite may be used.
Patent GB-959524-A (GB)
Title: A method of preparing water-soluble steroids
Inventor: MIKI TAKUICHI
IPC: C08F8/00
Filed: 1962-07-27
Abstract: Water soluble steroid esters are obtained in a process which comprises reacting a steroid containing at least one hydroxyl group in the molecule with a vinyl pyrrolidone co-polymer containing at least one carboxyl group or reactive group derived therefrom, in the polymer chain. As steroids there may be employed prednisolone, cortisone hydrocortisone, 9a -fluoro -16a -methylprednisolone, testosterone, 19-nortestosterone, triamcinolone, estradiol or 17a , 19, 21-trihydroxy-pregn -4- ene-3, 20-dione.
Patent GB-603864-A (GB)
Title: Improved process for making very strong artificial threads
IPC: D01F2/08
Filed: 1945-11-01
Abstract: Very strong threads of artificial silk are made by extruding viscose into a sulphuric acid-salt spinning bath containing a small proportion of formaldehyde or other aliphatic aldehyde and then stretching the threads so produced while they are passing through a second bath containing hot water.  Alternatively, the aldehyde, instead of being present in the spinning bath, may be added to another bath containing water at the temperature of the spinning bath, and the threads may be passed through this bath before entering the hot water bath in which they are stretched. The formaldehyde strengthens the threads and enables them to be subjected to greater stretching tensions than are permissible without this addition.  In an example, viscose containing 8 per cent of cellulose and 7 per cent of alkali is extruded into a bath containing sulphuric acid, sodium sulphate, magnesium sulphate, zinc sulphate, and 2 per cent of formaldehyde.  After leaving the bath the freshly spun thread is led through a water bath heated to 90 DEG  C. and containing a little acid owing to the spinning bath solution carried along by the thread. In this bath, the thread is stretched 120 per cent by means of rollers.  A thread having a tensile strength of 3.5 grams per denier is obtained.
Patent GB-432186-A (GB)
Title: Improvements in or relating to motor cycles
IPC: B62M25/00
Filed: 1933-10-20
Abstract: 432,186. Motor-cycle driving-gear. ZUNDAPP GES. FUR DEN BAU VON SPEZIALMASCHINEN, 10, Dieselstrasse, Nuremburg, Germany. Oct. 20, 1933, No. 29106. Void [Abridged as open to inspection under Sect. 91 of the Acts, April 23, 1934]. [Class 79 (ii)] The engine c of a motor-cycle has its shaft disposed in the central longitudinal plane of the cycle and drives a parallel shaft f through chain gearing. In the construction shown in Fig. 1, the chain gearing d<1>, e<1> constitutes the change-speed gear ; in that shown in Fig. 2, the chain gear d, e may be a single train or a twospeed gear and a main change-speed gear h of ordinary type is provided, either on the shaft f or in line with the engine shaft. The rear wheel is driven through bevel or worm gearing g.
Patent GB-209227-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H19/02
Filed: 1922-10-25
Abstract: 209,227. British Thomson - Houston Co., Ltd., and Griffiths, L. Oct. 25, 1922. Switches, without quick action.-A dimming switch has a number of fixed spring contacts and a rotatable member which is retained in any position in which a metallic element therein bridges two of the contacts by the engagement of the contacts with recesses in the rotatable member. As shown, the handle 13 rotates an insulating boss 8 carrying a contact 7 which bridges adjacent contact springs 1 mounted on a base 3. The contacts 7 are bent at their tips 10 to engage recesses 11 in the boss 8. Such a switch may be used with two separate lamps or double filament lamps and may be mounted between the lamp body 5 and its reflector by means of clips 4. Specifications 168,106 and 180,788, [both in Class 35, Dynamo-electric generators &c.], are referred to.
Patent GB-983637-A (GB)
Title: Improvements in or relating to gas cleaners
IPC: B60C9/20
Filed: 1961-08-11
Abstract: 983,637. Separating particles from gases. P. M. VAN DER MEER. Aug. 11, 1961, No. 29118/61. Heading B1T. Gas entering at 1 passes through a series of open-ended sleeves 4-9, each consisting of a cylinder terminating in a frusto-cone, the sleeves being interconnected by three axial spacer plates 11 (angularly spaced 120 degrees from one another in plan). The plates and the sleeve 9 are secured to a supporting plate 14 which in turn rests on three nuts 23 co-operating respectively with three bolts 21 depending from fixed lugs 19. By manipulating nuts 23 the whole assembly of sleeves and plates may be raised or lowered. Clean gas is discharged at 16. Gas emerging from sleeve 9 can reach pipe 16 via apertures 26 in plate 14.
Patent GB-603874-A (GB)
Title: Improvements in or relating to plant for the recovery of waste heat from furnace gases
IPC: F22B1/18
Filed: 1945-11-02
Abstract: 603,874. Turbines. SPENCER-BONECOURT, Ltd., and GREGSON, W. Nov. 2, 1945, No. 29124. [Class 110 (iii)] In a plant for the recovery of waste heat from an industrial furnace comprising a heat exchanger, draught-inducing means draws the waste gases through the heat exchanger, and a compressor delivers working fluid to a turbine by way of the heat exchanger ; means are provided for supplying a controlled amount of additional heat to the working fluid. The waste gases from the furnace 2, Fig. 2, are drawn through the heat exchanger 3 by means of a fan 1. The compressor 4, comprising stages 4<1>, 4<11>, with an intercooler 10, delivers air by way of a heat exchanger element 3<1> to a turbine 5. The latter comprises stages 51, 5<11> with an interstage heater 3<11> forming part of the heat exchanger 3. Cooling water from the intercooler 10 is fed to a boiler 9 where it is heated by the turbine exhaust to produce steam or hot water. Additional heat is supplied to the heat exchanger 3 by an auxiliary combustion chamber 6, the firing of which is controlled automatically to regulate the turbine output. The control means may be responsive to variations in turbine speed from a normal value. The gases from the auxiliary combustion chamber may now through a separate section of the heat exchanger 3 or through a separate heat exchanger. In the embodiment shown in Fig. 3, the turbine exhaust passes through an auxiliary heat exchanger 12, and the boiler 9 is heated by the waste gases from the furnace. In a further embodiment the turbine exhaust and the furnace gases are passed through separate sections of the boiler 9.
Patent GB-910402-A (GB)
Title: Fluid seal for rotary shafts
IPC: F16J15/38
Filed: 1961-08-12
Abstract: 910,402. Stuffing-box substitutes. CHESTERTON CO., A. W. Aug. 12, 1961 [July 20, 1961], No. 29193/61. Addition to 895,408. Class 122 (5). A rotary shaft seal comprises an axially movable non-rotatable ring 29 urged into facial sealing contact with a ring 20 fixed to the shaft 10 and an 0-ring 34 slidably located between a bore in the shaft housing 12 and the stem 31 of a member 30 secured to the housing. The 0-ring 34 abuts a piston 26 loaded by springs 27 and in operation, when the pressure of the sealed fluid is below a certain value, the piston contacts the end of a sleeve 28 carrying the ring 29 and the sealing faces are urged into contact by the springs 27. As the pressure increases, fluid passing through passages 32 in the member 30 moves the 0-ring and the piston 26 to the right until the latter abuts the end wall of the housing bore, the springs then being ineffective and the sealing contact pressure being due solely to fluid-pressure acting on the area B of the sleeve 28 which is sealed to the member 30 by an 0-ring 33. The ring 20 is sealed to the shaft by an 0-ring 22 and is rotatably and axially connected by driving pegs (not shown) and overlapping flanges 21 and 17 respectively to a two-part ring 16 clamped to the shaft 10.
Patent GB-1500898-A (GB)
Title: Forming of materials by extrusion
IPC: B21C23/21
Filed: 1975-07-11
Abstract: 1500898 Extruding UNITED KINGDOM ATOMIC ENERGY AUTHORITY 9 July 1976 [11 July 1975] 29316/75 Heading B3P In apparatus of the kind described and claimed in Specification 1,370,894, one of the first and second members consists of a wheel 32 with an endless groove 38 in its periphery and the wheel material particularly that of the walls of the groove is prestressed by superimposing a circumferential compression in the wheel material. The components forming the wheel are keyed to a shaft or drive member 10 and retained by an hydraulic nut 16, consisting of a body 17 containing an annular bore 18 communicating with an annular cylinder 19 in which is located an annular piston 20. The piston is forced outwardly by hydraulic pressure to exert a force on pressure ring 25, sleeve 26 and ring 29, a reactive force in the opposite direction being exerted on ring 35 by a face 12 of a portion 11 of the member 10. Surfaces 30, 34 of the rings 29, 35 bear on the wheel 32 and set up a compressive hoop stress in the wheel. The prestress prevents, or prevents the propagation, of fatigue cracking. In alternative embodiments the wheel may be formed of close-fitting sectors or the compressive stress may be applied by shrinking rings on to the wheel on either side of the groove.
Patent GB-811832-A (GB)
Title: Improvements relating to fuzes for projectiles
IPC: F42C1/02
Filed: 1957-09-19
Abstract: 811,832. Projectile fuzes. BOFORS, A. B. Sept. 19, 1957 [Sept. 21, 1956], No. 29482/57. Class 9(1). An impact-operated projectile fuze is provided with means designed to protect the fuze against operation by impact with rain drops. The fuze nose 1 has an axial stepped bore 2 housing a sleeve 4 provided with a flange 5 supported by a shoulder 3. A safety pin 8 passing through an axially positioned striker 9 extends into openings in the sleeve 4, which is secured'by a disc 6 placed over the flange 5 and held by a ring 7 or by bending over the nose 1. Within the sleeve 4 is a member 11 closed at the top and slotted to straddle the pin 8. Should the centre of the disc 6 be destroyed by impact with a small object, e.g. a raindrop, the blow would be transmitted to the member 11 without operating the fuze. Impact with a larger object causing a thrust on the sleeve 4 would either shear off the flange 5 or so bend it that the sleeve would move inwards forcing the striker to actuate the fuze. In Fig. 4 the member 4 has the form of a slide with three radial vanes engaging recesses in the member 11. The vanes are enlarged at the outer ends of the fuze to engage an annular recess 14. A disc 6 (not shown) may be fitted into the recess as in Fig. 1.
Patent GB-468114-A (GB)
Title: Improvements in surgical douches
IPC: A61M3/02
Filed: 1936-10-30
Abstract: 468,114. Surgical douches. BOUDO, A. Oct. 30, 1936, No. 29503. Convention date, Oct. 31, 1935. [Class 81 (ii)] A surgical douche comprises a substantially elliptical rubber or like bulb 1 at least one end 2 of which is conical and serves as a nozzle and also as an obturator for the cavity treated. A delivery valve 3 is housed in the nozzle 2 and an inlet valve 5 in the end remote therefrom. A flexible tube 7 may be attached to the inlet end by a connector 6 and a delivery nozzle of ordinary construction may be applied to the end 2 if desired.
Patent GB-258127-A (GB)
Title: Improvements in or relating to the manufacture of blown glassware
IPC: C03B9/14
Filed: 1925-11-23
Abstract: 258,127. Jackson, W. J. Mellersh-, (Hartford-Empire Co.). Nov. 23, 1925. Blowing; delivering molten metal. - A method of making blown glassware consists in allowing molten glass to issue from an aperture in a receptacle, and in blowing the glass while it is issuing and before it is detached from the body of glans in the receptacle. The form of apparatus shown in Figs. 1 and 3 comprises a forehearth 4 having a discharge aperture 6. a hollow and vertically movable plunger 2 having its lower end submerged in molten glass 3, and a blowpipe 7 which extends through the plunger 2 and is connected at its upper end to a source of vacuum or air pressure. In the position shown in Fig. 1, the plunger 2 is at the top of its stroke, the blowpipe 7 is raised above the aperture 6, and the glass is beginning to issue from the aperture. A slight leakage of air into the blowpipe causes a hollow 9 to be formed in the issuing glass. Downward movement of the plunger forms a gather of glass below the aperture, and air blown through the pipe 7 enlarges the space 9 and forms the gather into a bubble. After the bubble has been allowed to elongate, a mould 8, Fig. 3, is closed around it and it is blown to fill the mould. The mould and the pipe 7 are next separated, and blowing is continued to burst-off the glass between the mould and the pipe. If the glass does not burst, it may be cleaned off by a tool passed over the mould, and the hardened neck of glass may be severed by shears from the mass in the forehearth. Finally, a burner is brought into position to reheat the stub end of glass projecting from the aperture 6. In some cases, the plunger 2 may be omitted, the reciprocation of the pipe 7 being sufficient to control the formation of the gather. Shaping articles after formation.-If the neck of the formed article, in this case a bottle, is to be finished, the mould is moved to a new position where a neck-former 20, Fig. 8, is closed on the upper end of the mould and a ring burner 22 is brought into position to reheat the rough projecting edge of the glass. When the glass is soft, the burner is removed and a forming-tool 21 is lowered and co-operates with the former 20 to finish the neck of the bottle. A rotary shaping-tool or other suitable device may be used instead of the formers 20, 21. The method and apparatus may also be used for the production of electric lamp bulbs.
Patent GB-402583-A (GB)
Title: Improvements in or relating to vehicle wheels
IPC: B60B27/02
Filed: 1932-10-22
Abstract: 402,583. Vehicle wheels. McCLURE, J., and BROADBENT, J., c/o Simpson, Fawcett, Co., Black Bull Street, Hunslet, Leeds. Oct. 22, 1932, No. 29530. [Class 144 (i).] The hub of a wirespoked wheel, particularly for use on perambulators, comprises two cup-shaped members 1 with their inner edges recessed to house ballbearings 2, and their outer edges connected by seaming, welding, riveting, or like means. The inner ends of the spokes have tee-shaped heads which are assembled through key-hole slots in the parts 1.
Patent GB-280897-A (GB)
Title: Improvements in labyrinth packings
IPC: F16J15/447
Filed: 1927-11-04
Abstract: 280,897. Akt.-Ges. Brown, Boveri, et Cie. Nov. 19,1928, [Convention date]. Stuffing. - boxes, substitutes for. - In labyrinth packing comprising sheetmetal rings a, Fig. 3, the rings a are made in segments and are secured, without caulking, in undercut grooves by means of retaining - pieces b, The grooves may be undercut at one or both sides, or may be of dovetail section. Adjacent packing strips may be formed integral and embrace the retaining-pieces b. In securing the packing in the stator, the retaining pieces b are threaded in at the joint in the packing-box, while, in mounting the packing on a shaft, the retaining-pieces are threaded through an axial slot h, Fig. 11, in the shaft. The groove is undercut at i to secure final retaining-pieces b and spacing and locking pieces f. In a modification, the undercut is made shallow, Fig. 8, so that the retaining- pieces b can be inserted through the mouth of the groove. The undercut may be bevelled, or rectangular. In securing the packing on a shaft, the retaining-piece which is inserted last is made in two pieces e, g secured by a locking-piece f.
Patent GB-864549-A (GB)
Title: Improvements relating to cross-cutting machines
IPC: B23Q16/00
Filed: 1958-10-16
Abstract: 864,549. Sawing. BUCKLEY, R. H. Jan. 18, 1960 [Oct. 16, 1958], No. 29585/58. Class 145. A stop arrangement for a cross-cut saw comprises several stops 3, 4 adjustable along a gauge bar 2, each comprising a triangular stop 10 retractable up the inclined base 9 of the stop by a cam 13 engaging a roller on a pin 14 within a slot 11 in the stop member. The cams are carried on bushes 12 slidable on a square shaft 15 and have depressions of different angular lengths so that by rotating a geared hand wheel 18 the stop members can be retracted successively. The gauge bar 2 may be mounted in fixed brackets or may be movable lengthwise a limited distance to enable each stop to be used for more than one dimension by rack and pinion, link or toggle means. The gauge bar may be graduated and a rule 6 may be provided. A pin 16 in the stop passes through a guide slot 17 in the stop member and the stop members may be spring-loaded to the out position so that they move out in any angular position of the stop on the gauge bar. The work is conveyed on a belt 1 and the stops are securable to the gauge bar by clamps 5.
Patent GB-443355-A (GB)
Title: Improvements in apparatus for drying webs of fabric
IPC: F26B13/16
Filed: 1935-10-28
Abstract: 443,355. Drying webs of fabric. SEABROOK, H., 31, Bedford Street, Strand, London.-(Weisbach Kommanditges., C. H. ; Chemnitz, Germany) Oct. 28, 1935, No. 29721. [Class 34 (i)] To enable two webs of fabric to be dried under independent conditions in the one machine, a perforated rotatable drum 2 arranged for webs to travel thereon and enclosed within a casing 1 is divided into two chambers by means of three partitions 10, 11, 10 arranged transversely of the axis of the drum, the central partition 11 being fixed and the outer partitions 10 adjustable in relation to each other by means of right and left threaded screw spindles 12 engaging nuts fixed to the partitions 10, the spindles being connected with each other by chain-and-sprocket gear for rotation by means of a hand wheel. The space between the drum and the casing is also divided into two chambers by means of a partition 14. Fans 15 drive the air from the drum, past heaters 17 and back again into the drum through the web and the perforations. The two circulating and heating systems work independently so that either two narrow webs can be dried under different conditions or one wide web can be dried with the same condition in both systems. In a modified construction, the screw spindles 12 are divided at the centre and the sections driven independently, so that the partitions 10 can be adjusted separately.
Patent GB-753514-A (GB)
Title: Semiconductor signal translating devices and circuits
IPC: H03F3/16
Filed: 1953-10-28
Abstract: 753,514. Semiconductor devices. WESTERN ELECTRIC CO., Inc. Oct. 28, 1953 [Oct. 31, 1952], No. 29789/53. Class 37. [Also in Group XL (c)] A signal translating circuit comprises a semiconductor body of one conductivity type having source and drain electrodes, a reverse biased rectifying junction in contact with the body, means to vary the potential across the junction to vary the current through the load which is connected to the drain, and means adjacent the drain for enhancing minority carrier flow from the drain to the gate. Reference is made to Specification 748,487 which describes a unipolar transistor (Fig. 1), wherein a majority carrier current flows in N-type semiconductor body 11 from ohmic source electrode S to. ohmic drain electrode D, this current being controlled by varying the potential of gate electrode G consisting of two P-type portions 12, the PN junction being reverse biased. The drain bias is substantially greater than the source bias. A minority carrier current also flows from the drain D to the gate G, and according to the invention this flow is enhanced. The minority current flow is proportional to the majority current flow, and therefore variation of the gate potential results in a change in the gate current in opposite sense to provide a negative resistance effect. An oscillator circuit (Fig. 5, not shown) may then be provided by including a tuned circuit in the gate lead, and signals may also be applied to the source electrode to provide an oscillator-mixer circuit. Alternatively, if a resistance is connected between the gate and source electrodes, the arrangement provides a two stable state trigger circuit (Fig. 6, not shown). The minority carrier flow from the drain to the gate electrode may be enhanced by providing a region of material having low carrier lifetime adjacent the drain electrode which corresponds to a high rate of thermal generation; this may be achieved by using a solder of antimony and tin, by diffusing nickel into the semiconductor body, by creating imperfections such as by sandblasting or electron bombardment of body surface, or by using rhodium plating for the drain electrode. Since the mechanism involves minority carrier generation, the device is sensitive to temperature and light variation and may be used to monitor, measure or control temperature and illumination. Alternatively the minority current may be increased by providing a forward biased rectifying contact (point contact or PN junction) to inject minority carriers in the neighbourhood of the drain electrode; the forward bias may be made to vary directly with the majority carrier current by connecting to the drain load resistor (Fig. 2, not shown), so providing a low negative resistance.
Patent GB-1211632-A (GB)
Title: Copying apparatus for machine tools
IPC: B23K7/00
Filed: 1968-01-01
Abstract: 1,211,632. Photo-electric follower systems. MESSER GRIESHEIM G.m.b.H. Jan. 1, 1968 [Jan. 26, 1967], No. 29792/70. Divided out of 1,211,631. Heading G1A. The description is identical to that of Specification 1,211,631 but the main claim includes the feature that the first and second control means for adjusting the lead, in dependence on machining speed, and the cutting gap, respectively, are constituted by a cross-carriage arrangement of two carriages at 90 degrees to one another and to the axis of rotation of the scanning device. The photoelectric means, however, is not required to be secured to one of the control means for movement therewith.
Patent GB-1274066-A (GB)
Title: Improvements in or relating to substituted carbamates
Inventor: EISEMAN FRED SAMUEL JR
IPC: D06M13/428
Filed: 1969-06-12
Abstract: 1,274,066. Coated products. GAF CORP. 12 June, 1969 [17 June, 1968], No. 29939/69. Heading B2E. [Also in Divisions C2 and C3] Antistatic coatings on natural and synthetic fibres are formed by compounds of formula: wherein R is a C 2-25  alkyl, aryl or alkaryl radical, the alkyl groups containing 2 to 18 carbon atoms, X is chlorine, bromine or fluorine, Y is a hydrogen atom or a methyl or ethyl group, n is 10, R 1  and R 2  are C 1-3  alkyl or C 1-3  hydroxyalkyl groups, R 3  is a C 1-4  hydroxyalkyl group and Z is an anion. Fibres specified are polyesters, acetate rayons, polyamides, polyolefins, acrylic fibres and wool. The coating is applied from methanol/carbon tetrachloride.