baber/WOPTO huggingface dataset:
Patent GB-1376509-A (GB)
Title: High-pressure mercury vapour discharge lamps
IPC: H01J61/18
Filed: 1972-03-24
Abstract: 1376509 Metal vapour lamps PATENTTREUHAND-GES FUR ELEKTRISCHE GLUHLAMPEN mbH 24 March 1972 [26 March 1971] 13971/72 Addition to 1282805 Heading H1D A high pressure mercury vapour discharge lamp with an additive consisting of a halide of a rare earth metal and/or of thallium, as described in Specification 1,282,805, is characterized in that bromine is present in an amount exceeding the stoichiometric ratio by from 0À1 to 3 mg./cm.<SP>3</SP>. Preferably the excess of bromine amounts to 0À2 to 0À8 mg./cm.<SP>3</SP>, and the amount of bromides may be 0À25-10 gm./cm.<SP>3</SP>, preferably 0À5-5. The rare earth metal may comprise dysprosium, holmium and thulium, alone or in combination, and the envelope may contain 2-12 mg.Àcm.<SP>3</SP> of mercury, preferably 4-10 mg./cm.<SP>3</SP>, and may contain up to 4 mg./cm.<SP>3</SP>, preferably 3 mg./cm.<SP>3</SP>, of caesium halide such as iodide, and a noble gas. In one example the filling comprises 0À6 mg dysprosium, 0À6 mg. holmium, 5 mg. mercuric bromide, 2À4 mg. caesium iodide, 10 mg. mercury, and argon at 50 torr. The mercury bromide reacts with the rare earth metals within the discharge envelope to form their bromides with excess bromine. The lamp may comprise a single envelope without an outer envelope.
Patent GB-1397027-A (GB)
Title: Capacitive discharge circuit
IPC: B61C15/00
Filed: 1973-03-22
Abstract: 1397027 Automatic control of capacitive discharge KNORR-BREMSE GmbH 22 March 1973 [22 March 1972] 14010/73 Heading G3R [Also in Division H3] A circuit for producing a regulated linearly decreasing voltage includes a capacitance with a discharge path controlled by the output of a differential amplifier receiving one input from a differentiating circuit connected across the capacitance and another input from a reference source. As shown, a capacitor 11 is charged by a generator driven by the wheels of a rail vehicle. The capacitor voltage is differentiated by an RC circuit 19, 22 connected to one input of a differential amplifier 20. The other input receives a constant voltage from a source 21, and the amplifier output controls, through a transistor 16, the impedance of a transistor 12 in the discharge path of capacitor 11 so that the rate of decrease of capacitor voltage tends to be held constant. This linearly decreasing voltage may be compared with the actual vehicle generator output voltage in a system for preventing slipping and skidding of rail vehicle wheels.
Patent GB-648384-A (GB)
Title: An improved fluid seal for a rotary shaft
IPC: F16J15/38
Filed: 1947-05-27
Abstract: 648,384. Stuffing-box substitutes. PIONEER OIL SEALING & MOULDINGS CO., Ltd., and BLAKELEY, J. W, May 27. 1947, No. 14039. [Class 122(v)] In a fluid seal for a rotary shaft 12 having a non-rotatable rigid sleeve 19 with shaft clearance in sealing contact at one end with a stationary member 11, 13, and a rigid ring 20 axially slidable on the sleeve 19 by means of a splined connection 21 to effect sealing under spring pressure with an annular face 23 rotatable with the shaft 12, the space between the ring 20 and the sleeve 19 is sealed by resilient means comprising an annular rubber member 26 on the side of the ring 20 remote from the face 23, bonded or free within a rigid cup like ring 27 and spring urged into sealing contact with the ring 20 so that the consequent axial compression causes it to grip the sleeve 19 in a sealing relationship. One end of a spring 22 reacts on the member 11, 13 while the other end engages the cup-like ring 27 to effect sealing between the sleeve 19 and the ring 20 and between the ring 20 and a steel washer 23 held against a step 24 of the shaft 12 by a liner 33 secured to the shaft 12 by a nut 34. Specification 638,829 is referred to.
Patent GB-808518-A (GB)
Title: Tow of polyacrylonitrile filamentary material and production thereof
IPC: D02G1/12
Filed: 1956-05-07
Abstract: <PICT:0808518/IV (c)/1> <PICT:0808518/IV (c)/2> A tow of polyacrylonitrile filamentary material, which has been hot-crimped mechanically, passes to a quenching zone provided by a circulation of cooled gas through which it travels in relaxed state on a moving support.  In the apparatus shown, the crimped tow 10 is led from the crimper to a quencher 12 in the section 14 of which it passes between feed rolls 20 and 22 and through a tube which reciprocates to lay the tow (optionally, assisted by a shoot) in a transverse zig-zag pattern upon a support 26, e.g. a continuously moving perforated or porous apron or wire screen, by which it is conveyed through a quenching zone 32 wherein a fan 42 circulates air which is cleaned by a filter 34 and cooled by coils 36 through which a cold fluid, e.g. refrigerated brine solution, circulates.  The tow leaves the support at 44 and falls into a shoot 46.
Patent GB-653620-A (GB)
Title: Improvements in and relating to automatic control systems for electric motors
IPC: B23D36/00
Filed: 1947-05-27
Abstract: 653,620. Automatic control systems for electric motors. BRITISH THOMSONHOUSTON CO., Ltd. May 27, 1947, No. 14083. Convention date, May 27, 1946. [Class 38 (iv)] [Also in Group XXXVII] An electric motor driving a flying shear is maintained at the same speed as the motor driving the final stand of a rolling mill by a tachometer generator, and the phase relationship between the motor is predetermined by a pair of 3-phase Selsyn repeaters. The output of a tachometer generator 12 driven by mill motor 5 is compared with a voltage tapped off resistor 13 proportional to the armature voltage of the shear driving motor 2. The resultant is applied to the control field winding 11a of the exciter 11, which controls the generator 3 and hence the speed of motor 2. The mill motor 5 is also coupled to a Selsyn 6 having 3-phase rotor and stator windings, and the motor 2 is coupled to a similar Selsyn 7. Both stators are normally energized via contactor 8 by a 3-phase supply 9. Two rotor windings 6e and 7d, chosen so that they are out of phase when the Selsyns are in the required phase relation, supply, via contactor 18, a rectifier 15 energizing one control field 14a of a generator 14 which is in series with the tachometer 12 and the potentiometer 13. The second control winding 14b is energized in opposition by rectifier 16 supplied from windings 6d and 7e which are equally and oppositely out of phase when the Selsyns are in phase. Under the conditions shown, Selsyn 6 is disconnected from motor 5 by a magnetic clutch 10 and is locked in a predetermined initial position by connecting rotor and stator via contactor 18 to a D.C. source 19. The stator of Selsyn 7 is also de-energized. As the strip 4 advances through the rolls it closes flag switch 17c, energizing the clutch 10 and restoring normal connections to both Selsyns which then remain in phase since any deviation unbalances the control fields 14a, 14b which produces a voltage from generator 14 to act upon control winding 11a to correct the speed of motor 2 and restore synchronism. Specification 539,835 is referred to.
Patent GB-608125-A (GB)
Title: Improvements in or relating to rocket motors
IPC: F02K9/08
Filed: 1944-07-24
Abstract: 608,125. Rockets. AEROJET ENGINEERING CORPORATION. July. 24, 1944, No. 14145. Convention date, Sept. 21, 1943. [Class 9 (ii)] A propellant composition for charging a rocket motor comprises a thermoplastic mixture of an oxidising agent and a fuel composed of an admixture of two petroleum base components of different viscosity characteristics. The oxidising agent may be potassium perchlorate and the fuel a mixture of asphalt, particularly air-blown asphalt, and a light mineral oil. In Fig. 2, the rocket motor comprises an elongated cylindrical vessel 17 filled up to the level 28 with the propellant composition. A lining material 29, preferably asphalt, binds the propellant composition to the vessel wall, and the vessel is provided with an igniter 21 and an exhaust nozzle 23. Igniter 21 comprises a primary ignition charge with filament 40 embedded therein and a secondary charge 43. On passage of an electric current through filament 40, via leads 41, the primary charge is ignited and as a result the secondary charge and the main body of the propellant composition are ignited in their turn. Details of the method of charging the rocket motor and also of re-conditioning it when it has deteriorated as a result of movement of the propellant charge, are given. The Specification as open to inspection under Sect. 91 refers to a propellant composition for charging a rocket motor comprising an impermeable thermoplastic mixture of an oxidizer and a fuel. Materials which may be used as fuels include cup grease, rubbery type vegetable oil pitch, mixtures of coal-tar pitch and ethyl cellulose, mixtures of various asphalts and other combustible thermoplastic materials. In an example, the propellant composition consists of asphalt and potassium perchlorate. This subject-matter does not appear in the Specification as accepted.
Patent GB-1278223-A (GB)
Title: Improvements in control system for automatically regulating the division of power between motives means and working means
IPC: F16H61/46
Filed: 1971-05-11
Abstract: 1278223 Hydrostatic transmission VALMET OY 11 May 1971 [13 May 1970] 14194/71 Heading F2D A tractor drive includes a pump 13 and motor 11, and the diesel engine 1 also drives an attachment, e.g. rotary ditchers or snow-ploughs, via a second hydrostatic transmission including a pump 6 and motor 23, the displacement of the pump 13 being adjusted automatically in accordance with the pressure 27 in the second hydrostatic transmission to decrease vehicle speed with increasing resistance to the attachment to prevent stalling of the engine. As shown, the pump 13 and motor 11 provide the creep transmission path from the engine to the gear-box 4, power being normally transmitted through a double clutch 2 and shafts 3 and 7. The pressure 27 acts via an adjustable throttle 28 on a servo 29, the piston (30) of which acts against a return spring (32) on the end at an adjusting lever (33) pivoting intermediate its ends on a lever (34) allowing manual adjustment. The control may also be adjusted by the pressure in the main transmission.
Patent GB-142485-A (GB)
Abstract: 142,485. American Optical Co., (Assignees of Boutelle, W. H.). April 29, 1919, [Convention date]. Spectacles and cyeglasses.-The separable parts of eyeglasses and spectacle frames are united by securing- means which are permanently attached to the parts; the securing-means may comprise screwed parts of harder material than the frame. Fig. 2 shows part uf a finger-piece eyeglass mounting in which a flattened part 2 of the bridge 1 has rigidly secured to it a post 11. The post 11 extends upwardly to form a pivot for the plaquet lever 3, and downwardly, as a screwed stud 16, to be engagd by a nut 17 rotatably secured in the joint plate 10 of the frame 6. The part 11 is secured to the frame by burring it at 21 so that it bites into the frame, and the nut 17 is secured by spinning its end 19. The plaquet lever 3 and spring 15 are secured by a screw 14 in a threaded hole 12 at the top of the post 11. In a modification, the post 11 ma.v be tubular with an internal thread, and the nut 17 may be replaced bv a screw secured in the frame. In other modifications, the post 11 may be screwed into the frame, and may be secured by burring the frame into a groove formed in it, or may be formed in one with the screw 14, having in the latter case a threaded hole to receive a screw rotatably secured in the part 10. As applied to spectacle frames, a dowel pin having a threaded part may be fixed in one portion of the frame so as to engage a rotatable nut secured in the other portion of the frame, the nut being as shown in Fig. 2, or having a partly spherical surface and being housed in a similarly shaped opening in the frame. Alternatively, the nut may be fixed and a screw rotatably secured in the frame may be provided to engage it.
Patent GB-1029439-A (GB)
Title: í¸-3-hydroxy-steroids and derivatives thereof
IPC: C07J5/00
Filed: 1964-04-07
Abstract: The invention comprises steroids of the formula <FORM:1029439/C2/1> (wherein R1 is hydrogen, acyl, a hydrocarbon radical or a tetrahydropyranyl group; R2 is hydrogen or halogen; R3 is acyl; and R4 is hydrogen or methyl) and their preparation by reduction of the corresponding 3-ketones with a complex light metal hydride.  This porcess may also be effected on a 17a -ol or its ether, or on a 20-protected keto compound or free or protected 20-ol, and the product subsequently converted to one of the desired structure.  The 3-hydroxyl group may then be esterified or etherified and, if desired, subsequently released again.  In 3,17,20-trihydroxy products, the 17,20-dioxy grouping may be converted to an alkylidene derivative, the 3-hydroxy group esterified, the protective grouping hydrolysed off and the 20-hydroxy group oxidized.  Examples are given, by-products being 3a -hydroxy compounds.  The steroids of the invention, which are stated to have a gestagenic action, may be made up into pharmaceutical compositions with suitable carriers.  These may take the form of tablets, dragees, capsules, solutions, suspensions, emulsions, ointments or creams, and may contain preserving, stabilizing, wetting or emulsifying agents, salts for regulating the osmotic pressure, or buffers.
Patent GB-200297-A (GB)
Title: Improvements in universal joints
IPC: F16D3/224
Filed: 1922-05-20
Abstract: 200,297. Hammond, A. S. May 20, 1922. No Patent granted (Seading fee not paid). Universal joints.-Rows of balls engage in inter secting grooves in the two members to be connected, the grooves being inclined to the main axis of the members. As shown, ball and socket members a, b have double helical slots c, d engaged by two rows of balls e.
Patent GB-611875-A (GB)
Title: Closures for collapsible tubes
IPC: B65D47/26
Filed: 1946-05-13
Abstract: 611,875. Stoppers &c. SPARGO, R. T. May 13, 1946, No. 14334. [Class 125 (iii)] A closure for a collapsable tube comprises a shutter 3, Fig. 1, having side pieces 5 pivoted at 6 to the outlet nozzle 2 of the tube 1, the nozzle having a semicircular surface 7 concentric with the pivot, and flat sides 9 inclined to each other so that in its closed position the shutter, the sides 5 of which are correspondingly inclined, is frictionally held by a wedging action. The under surface of the closure piece 4 of the shutter may be lined with metal foil, cork, &c. In a modification, Fig. 7, the shutter 3a is pivoted about an axis eccentric to the curved surface 7a of the nozzle so that when the shutter is in the closed position the closure piece 4a is frictionally gripped by the surface 7a. The outer surface 7 and closure piece 4 may be flat, ridged, or slightly rounded and ridged.
Patent GB-1424869-A (GB)
Title: Non-aqueous polyamic acid electrodepostion compositions
IPC: C09D5/44
Filed: 1973-03-26
Abstract: 1424869 Polyamide-acid salt solution WESTINGHOUSE ELECTRIC CORP 26 March 1973 [19 April 1972] 14335/73 Heading C3R [Also in Division C7] A method of making a non-aqueous polyamide acid electrodeposition composition comprises reacting 1 p.b.w. polyamide acid in 12.5 to 15.5 p.b.w. of a non-aqueous non-electrolizable organic solvent with 0À8 to 1.5 p.b.w. of an imidazole or organic t-amine to form a salt and adding to the resulting salt solution 7 to 9 p.b.w. of a non-aqueous non-electrolizable organic non-solvent for the salt to provide a solution of the salt in the solvent/non-solvent mixture. The polyamide acid may be obtained as described in Specifications 1,056,564 and 1,032,649. Various polyamide acid forming reactants, solvents, non-solvents, imidazoles and t-amines are mentioned. The specified preparation and order of mixing are stated to just barely keep the salt in non-colloidal solution and result in even and uniform covering of both flat surfaces and edges in electrodeposition processes, e.g. for coating electrical conductors. Finely-divided pigments or lubricants may be included to obtain coloured coatings or anti-frictional films. Coatings of 1 to 3 mils. may be deposited on Al, Cu, Ni, Fe, Zn, Ti, Pb, Sn, Pt or stainless steel.
Patent GB-496134-A (GB)
Title: Improvements in or relating to water-soluble organic iodine compounds
Filed: 1937-05-24
Abstract: Salts of 2 : 6-diiodo-phenoxy-aliphatic acid-4-sulphonic acids are prepared by reacting a 2 : 6-diiodo-phenol-4-sulphonate with a halogen-substituted aliphatic acid containing 2-4 carbon atoms. The sulphonates may be those of sodium, potassium, lithium, ammonium, diethylamine and diethanolamine.  The products, which are water-soluble, are useful as X-ray opaque media in urography. The example describes the preparation of the disodium salt of 2 : 6-diiodo-phenoxyacetic acid-4-sulphonic acid by heating sodium 2 : 6-diiodo-phenol-4-sulphonate with sodium chloracetate in aqueous solution.  The preparation of mixed salts is referred to.  The Specification as open to inspection under Sect. 91 also refers to the production by similar means of phenoxy-aliphatic acids containing a sulphonate group and at least one iodine atom in any position in the phenyl nucleus.  This subject-matter does not appear in the Specification as accepted.
Patent GB-184895-A (GB)
Title: Improvements in toggle presses
IPC: B30B1/14
Filed: 1921-05-24
Abstract: 184,895. Prouty, G. W. May 24, 1921. Embossing.- In a toggle press particularly designed for making phonographic records the lower die 15 is pressed against the upper by means of a double toggle 31, 32, 34, operated from a driving shaft 12. The upper press head 43 slides on uprights 13 and forms a piston working in a hydraulic cylinder 41, the whole being vertically adjustable bv means of nuts 38 After the toggle has been straightened, pressure fluid is admitted by means of a valve 50 to increase the pressure between the dies. A guard 22 covers the gearing.
Patent GB-861167-A (GB)
Title: Improvements in safety helmets for the operators of shot and sand blasting machines
Inventor: HUDSON THOMAS
IPC: A62B18/04
Filed: 1958-05-07
Abstract: 861,167. Respiratory appliances. BRITISH SHOTBLAST & ENGINEERING CO. Ltd. May 6, 1959 [May 7, 1958], No. 14577/58. Class 81 (2). [Also in Group VII] A respiratory helmet for operators of shot and sand blasting machines is made from vulcanized rubber sheet mounted on an inner frame B secured to the helmet by a nut on the screwed shank of an air inlet pipe C which passes through the helmet and frame, the helmet including a member b for supporting the helmet on the head. Sheet rubber is worked and cut to the required helmet shape on a metal jig so that adjacent edges of the sheet overlap, the shaped sheet is then vulcanized to form the helmet A and outer and inner aprons D, D<SP>1</SP> are secured by rivets to a band B<SP>1</SP> inside the helmet. The frame B may be made of leather and comprises U-shaped strips which overlap at the crown and have their free ends connected to an endless band b<SP>5</SP> to which the head support b is connected.
Patent GB-323705-A (GB)
Title: Improvements in healds for weaving
IPC: D03C9/02
Filed: 1929-05-10
Abstract: 323,705. Haydock, Ltd., J., and Haydock, H. May 10, 1929. Healds of cotton or other yarn are given a coating of finely divided aluminium, copper, zinc, or other metal applied to the surface in a liquid adhesive carrying medium such as copal or kauri gum varnish by spraying, brushing, or otherwise. The coating which may be applied instead of or in addition to the usual varnish coating renders the healds smoother and more durable.
Patent GB-416141-A (GB)
Title: A new or improved strainer for culinary purposes
IPC: A47J43/22
Filed: 1933-05-22
Abstract: 416,141. Strainers. LUDLOW BROS. (1913), Ltd., and CRANKSHAW, H. M., 202, Fazeley Street, Birmingham. May 22, 1933, No. 14693. [Class 46.] A device for expressing liquid from vegetables in a pan or cullender consists of a disc-like member with a comparatively deep depression 3 and a row or rows of perforations 4<a> in the part surrounding the depression 3 and which may be slightly depressed below the margin 5 of the member. The device is provided with a handle 6.
Patent GB-931387-A (GB)
Title: Cigarette
IPC: A24D1/00
Filed: 1962-04-17
Abstract: 931,387. Cigarettes. M. DIAMANT. April 17, 1962 [May 8, 1961], No. 14717/62. Class 130. A cigarette C is provided with means to be grasped to facilitate axial extraction of the cigarette from a group of tightly packed cigarettes, the extracting means consisting of a tube-like extension 2 of the cigarette paper wrapper. The extension may include a disc which is brought into engagement with an end of the tobacco material in a cigarette when a group of cigarettes is packed. The cigarette paper wrapper and the tube-like extension may be divided by a circularly arranged series of perforations.
Patent GB-475810-A (GB)
Title: Improvements in or relating to barrels or drums
IPC: B65D8/04
Filed: 1936-05-25
Abstract: 475,810. Wood &c. barrels &c. VENESTA, Ltd., and RAWLINGS, G. May 25, 1936, No. 14733. [Class 21] Barrels or drums of wood or other vegetable fibre have end hoops d held by metal plates f fitting over the abutting ends and by rivets g, the hoops extending beyond the upper and lower edges of the body against which the heads abut. Internal hoops h held by rivets, bear on the heads. Two external metal strips k extending from top to bottom join the two halves from which the body is made.
Patent GB-170550-A (GB)
Title: Improvements in hydraulic moulding presses
IPC: B30B15/16
Filed: 1921-05-27
Abstract: 170,550. Buckeye Iron & Brass Works, (Assignees of Trace, R. A.). Oct. 18, 1920, [Convention date]. Combinations of independent valves. - In an hydraulic oil-cake press having means for performing part of the stroke by low-pressure liquid and the remainder by high-pressure liquid, an inlet valve 16, Figs. 1 and 6, is opened by lifting a lever 19, and low-pressure liquid passes to a controlling-valve 23 through a port 38, Fig. 4, lifts a check valve 40, and flows through a pipe 13 to the press cylinder. When the pressure rises to a predetermined value, it opens a spring- controlled high-pressure inlet valve 58 by acting on a piston 44, the valve 40 being then closed by the pressure on its back. By depressing the lever 19, an exhaust valve 15 is opened and the inlet valve 16 allowed to close. The valves 15, 16 are similarly constructed, each being acted on by a spring 55 and having operating and stop pins 18, 56. The pipe 13 leads to a cylindrical member 9, Fig. 8, passing into the interior of the ram 5, and receiving a plug 11 when the ram is lowered. The ram is guided by a member 4, having a lower cup-shaped portion vented at 7. The upper press head is supported by columns 27.