baber/WOPTO huggingface dataset:
Patent GB-716638-A (GB)
Title: Improvements in fluid-pressure valve mechanisms
IPC: G05D16/10
Filed: 1952-02-22
Abstract: 716,638. Valves. DUNLOP RUBBER CO., Ltd., and TREVASKIS, H. W. Jan. 16, 1953 [Feb. 22, 1952], No. 4688/52. Class 135 A valve mechanism for a military type flameprojecting apparatus, comprises a tube 1a sealingly connected at its ends to an annular fuel container 1, and housing a perforated tubular member 4, a sleeve 3 screw-threadedly attached to the member 4, a screw-threaded boss 6 sealingly connecting the sleeve 3 to a compressed air container 2 and a manually-rotatable knob 50 having slots 51a housing a spindle 56 carrying cam rollers 57a co-operable with a cam surface 58. Within the sleeve 3 is housed a normally closed inlet valve 19 having a stem 25 engageable with a control rod 36 and urged towards its seat 15 by a spring 21. A hole 22 through the valve 19 communicates with a hollow tail 20 to pressure balance the valve 19. A sealing ring 60 having a V-shaped groove to enhance its sealing properties prevents leakage from the space 4a between the tube 1a and the tubular member 4 to the space between the containers 1 and 2 whilst a similar shaped ring 61 permits flow fom the space 4a to the container 1 but prevents flow in the reverse direction. Within the tubular member is mounted a relief valve comprising a tubular seating 42a urged by a spring 46 into contact with a valve member 42 which co-operates with a nut 41 secured on the control rod 36. Anti-clockwise rotation of the knob 50 permits the rollers 57a to run down the cam face 58 to seat the relief valve 42 and through a spring 39 and the control rod 36 unseat the inlet valve 19 to permit the flow of compressed air from the container 2 to pass through a filter 17, the tubular member 4 and past the ring 61 to pressurize the fuel in the container 1 which is connected by a flexible hose to a jet nozzle. Further rotation of the knob moves the relief valve and its seat against the spring 46. The pressure in the tube 1a and the fuel container now progressively builds up and acts on the effective area of the relief valve 42 to overcome the spring 39. As the relief valve 42 moves upwards taking the control rod 36 with it, the spring 46 moves its seating 42a upwards so that it remains closed and the spring 21 urges the inlet valve towards closure. On the abutment of a flange 45 on the tubular seating 42a against a projecting flange 44a, the relief valve is unseated and air is exhausted to the atmosphere through a vent valve 54.
Patent GB-487614-A (GB)
Title: Improvements in or relating to motor vehicles
IPC: B62D35/00
Filed: 1937-02-17
Abstract: 487,614. Road - vehicle bodies. FACHSENFELD, F. R. K. Feb. 17, 1937, No. 4734. Convention date, Feb. 17, 1936. [Class 108 (i)] A road-vehicle body is constructed so that it is streamlined from the front to the point of greatest cross - section and then tapers gradually to the rear so that the air flow does not become detached from the surface, the rear being formed as a flat or curved flat transverse portion. Fig. 3 shows the known streamlined vehicle which tapers to a line or point at the rear and showing wherein the rear tapering surface deviates from the line of the air flow. Fig. 9 shows a vehicle which tapers rearwardly from the greatest crosssectional area A, B in conformity with the air flow, the body terminating in a truncated portion which may be recessed to hold tyres &c. As shown in Fig. 10, this truncated rear portion may be prolonged by covers or screens when desired, the prolongation preferably being of inflatable nature which may be collapsed when necessary.
Patent GB-1370534-A (GB)
Title: Method for the production of phosphoric acid
IPC: C01B25/22
Filed: 1972-02-02
Abstract: 1370534 Phosphoric acid production B G ZOTOV S K VOSKRESENSKY V A KONONOV S D EVENCHIK E N ZHUCHKOV D K NIKITINA N R BRODOVSKY V S KUNIN E P MASLOV N I TEREKHOV N A KOVALEVA and A K KISELEV 2 Feb 1972 4795/72 Heading C1A H3PO4 is prepared by mixing H3PO4 of 18-48% P2O5 by wt. concen. with H2SO4 of 75-98% by wt. concen. at a temp. of 95- 150‹ C. for 2-60 min., the wt. ratio of the acids being 1À5-3À5 : 1, and then digesting Ca-containing phosphate raw material, e.g. apatite, with the acid mixture at 65-100‹ C., the H2SO4 being present in amount corresponding to 90-105% by wt. of the amount necessary to convert all the Ca into CaSO4.2H2O or alpha-CaSO4.¢H2O, the resulting precipitate of CaSO4 being filtered from the product phosphoric acid; the precipitate being washed with water and the washings and some of the phosphoric being combined to give a liquor having a 18-48% P2O5 concen. and recycled to the acid mixing step. Steam may be introduced into the acid mixing step, the mixture being maintained at a temp. of 95-100‹ C. for 0À5-5 min. to remove SiF4 and then at a temp. of 100-150‹ C. to remove HF. Silica may also be added to the mixture in an amount of 20-100 kg/ton of product phosphoric acid calculated as P2O5.
Patent GB-130702-A (GB)
Title: Improvements in or relating to Propellers.
Inventor: GRANDVILLE HENRI JOSEPH LEON M
IPC: B64C11/16
Filed: 1918-03-19
Abstract: 130,702. La ChevardiÞre de la Grandville, H. J. L. M. de. May 25, 1917, [Convention date]. Drawings to Specification. Screw and like propellers. - Laminated wood propellers designed particularly for aircraft are constructed so that their blades are free from bending, but are sufficiently elastic to allow the pitch to vary automatically during rotation. The neutral line, i.e. the line on which the centres of gravity of the various transverse sections are situated, is shaped so that if any desired point of it is considered which is in the effective part of the blade, and if the centrifugal force and the thrust, acting on the portion of the blade beyond the said point relatively to the axis of the propeller, is transferred to this point, the resultant of these forces is tangential to the neutral line and the two couples produced by the transfer are of equal and of opposite sign. Further, the neutral line is shaped so that if any desired point of it is considered which is in the effective part of the blade, the projection of the transverse plane passing through the said point, of the point of application of the trust acting on the portion of the blade situated beyond the said point of its neutral line, relatively to the axis of the propeller, is at a greater distance from the leading edge of the propeller than the said point of the neutral line. Methods for designing a propeller of this kind are described in the Specification at length. All the laminµ in the inactive part of the propeller above the neutral line may be of soft wood; the rest of the propeller is constructed from hard and very elastic wood laminµ.
Patent GB-229494-A (GB)
Title: Improvements in and relating to scrubbing boards
IPC: D06F1/00
Filed: 1924-03-12
Abstract: 229,494. Barratt, W. H. March 12, 1924. Mangles and wringers, boards for. - A scrubbing-board, which may be attached to a wringer or mangle to serve as the drip or mangle board comprises a shaft 1 of zinc or other metal provided with a number of protuberances 2 and bent at a right-angle 1<a>. The sheet is supported by a framework 3, the front members 4 of which are spaced from the sheet to form a channel 5 for the water expressed from the clothes, which is discharged through a hole 6.
Patent GB-1127983-A (GB)
Title: Improvements in or relating to electric switching circuits
Inventor: GARLAND BERNARD
IPC: H04L27/12
Filed: 1966-02-04
Abstract: 1,127,983. Transistor switching circuits; frequency shift modulation. GENERAL ELECTRIC CO. Ltd. 30 Jan., 1967 [4 Feb., 1966], No. 5019/66. Headings H3R and H3T. The voltage developed across a rectifier 11 in a potentiometer chain 11, 13 by a bias source 12, is applied between the base and collector of a transistor 10 operating in the inverse mode to bias the transistor to the threshold of conduction, the voltage then developed across resistor 15 by an input signal 2 rendering the transistor fully conductive or fully non-conductive, depending on the polarity of the input signal. The diode 11 and transistor 10 are of. the same material, e.g. silicon, and the diode therefore provides temperature compensation for the basecollector junction of the transistor. The circuit is used in a frequency shift telegraphy transmitter to effectively connect a capacitor 9 into the resonant circuit 6, 16, 17 of oscillator 4 and hence change the frequency thereof.
Patent GB-116874-A (GB)
Title: Improvements in Collapsible Receptacles, such as Packing Cases, Crates and the like.
Inventor: WHITE ROBERT JOHN
IPC: B65D6/16
Filed: 1918-03-21
Abstract: 116,874. White, R. J. March 21, 1918. Folding or knock-down boxes &c.-Boxes, packing-cases, crates, &c. are constructed with separable side, end, and bottom members, the side members a, b carrying parts c with grooves d, which receive fillets g on the end members f. Projections h on the fillets, preferably formed with inclined lower faces, are adapted to enter corresponding recesses in the parts c. The bottom member j, inserted from the top, rests on fillete i at the lower edges of the members a, b, f and the lid l, which may be hinged, fits between the upper ends of the parts c, g. The fillets g may be held in the parts c by clamps, screws, &c. The bottom j may be raised by means of a loop k.
Patent GB-414786-A (GB)
Title: Improvements in tobacco ash receptacles
IPC: A24F19/00
Filed: 1933-02-20
Abstract: 414,786. Smokers' ash receptacles. BUNN, C. W., 1, Herbert Street, West Bromwich. Feb. 20, 1933, No. 5114. [Class 130.] An ash receptacle 18 is normally housed in an attachment plate consisting of a hollow body 11 with an open front, and comprises an apertured front plate 16 behind which is disposed the receptacle 18, which normally cpvers the open front of the attachment plate, and with which the aperture 17 in the front plate communicates. In one form, Fig. 2, the receptacle 18 is pivotally mounted at 19 on the flange 12 of the body 11, which may be mounted in a recess 15 in the back of a seat &c., and a lug 21 on the front plate 16 is normally engaged by a spring catch 22. In a modification, the receptacle slides in engagement with integral ribs provided in the side walls of the container and is normally retained by a curved strip spring. In a further form, Fig. 6, a pin 28 mounted on the plate 16 slides in a tubular lug 27 on the body 11, and the receptacle 18 is normally drawn into the body 11 by a spring 29 bearing against a head 30 on the pin 28. A match-striking surface 31 may be provided.
Patent GB-222432-A (GB)
Title: Improvements in electro-magnetic clocks
IPC: G04C3/027
Filed: 1924-02-28
Abstract: 222,432. Etablissements L. Hatot. Sept. 27, 1923, [Convention date]. Electric clocks.-In a clock in which the pendulum is maintained electromagnetically the circuit is closed during the time of swing in one direction but the force exerted by the electromagnet 26<1> lasts only during a small interval at the time the pendulum is vertical. The circuit through the magnet comprises insulated spring strips 31, 32 connected to the battery terminals 29, 30, Fig. 4, an insulated plate 20 carried by a bracket screwed to the plate 11, Fig. 6, and connected to the strip 32, a rod 19 carried by the plate 20, and a friction-driven contact spindle 15 having a precious metal contact 14 with the rod 19 on each oscillation of the pendulum in one direction. The spindle 15 is pressed by the spring 17 against the plate 7 and has a recessed end to hold lubricant. The electromagnet 26<1> is short and so placed that the pendulum magnet is actuated only during a small interval at the middle of the swing. An additional coil 26<2> and, if desired, a copper tube 27 are provided to damp the vibrations when a certain amplitude is exceeded. The pendulum has an adjusting-nut 36 and a spring 39 engaging an adjustable stop 37. A pivoted stop to hold the pendulum during transport is also provided. The battery is held in the back of the case on a ledge pressed out therefrom and secured by a turn-button fastener. The hands &c. are driven by a pivoted pawl 34 on the pendulum and ratchet 33 and suitable gearing. The pendulum is suspended by two pairs of U- shaped hard metal hooks 6, 8 engaging the pendulum and frame.
Patent GB-1357829-A (GB)
Title: Process for producing porous articles of polytetrafluoroethylene
IPC: C08J5/18
Filed: 1972-02-03
Abstract: 1357829 Artificial fibres &c. KUREHA KAGAKU KOGYO KK 3 Feb 1972 [3 Feb 1971 10 Nov 1971] 5199/72 Heading B5B [Also in Division C3] A porous sheet or film having open-cells is made by stretching a sheet of polytetrafluoroethylene in at least two directions at a stretch ratio of 1À5-5 times in each direction at -10 to 200 C. The sheet may be stretched in a liquid which has a surface tension such that the liquid can penetrate the open-cells formed during stretching, e.g. methanol, ethanol, 1 - butanol, 1 - pentanol, ethyl ether, acetone, CCl 4 , hexane, heptane, octane, decane or nundecane. The stretched sheet or film may be heat treated, e.g. under tension.
Patent GB-930195-A (GB)
Title: Improvements in operating mechanism for an electrical circuit breaker
IPC: H01H3/60
Filed: 1962-02-12
Abstract: 930,195. Automatic circuit-breakers. GENERAL ELECTRIC CO. Feb. 12, 1962 [Feb. 14, 1961], No. 5245/62. Class 38 (5). A motor-driven cam-operated circuit-breaker has a second cam coupled to the main contact driving cam and a dash-pot coacting with the second cam for dissipating the kinetic energy of the motor drive after de-energization so as to stop the main cam. As shown, the contacts 12, 16 are closed by one complete revolution of the cam 40 which moves the toggle linkage 23, 24 over centre into engagement with a stop 44. Two further cams 107, 62 are mounted on the shaft 54 of the cam 40 and the shaft 54 is driven by a motor 50. The cam 107 controls contacts 56 which take over from initiating contacts 85 and de-energize the motor after the cam point 88 disengages the roller 42 of the toggle joint 25. Further movement due to kinetic energy is opposed by the dash-pot 60 as a roller 70 is driven downward by the cam 62. The dash-pot has a piston 64 with a metering opening 65 and non-return valve 66, 67 and stop 69 formed in the dash-pot cylinder 63 prevent the return force of spring 68 moving the piston upward to rotate the cams in the reverse direction. On initial energization of the motor 50 the piston will be driven downward until the cam point 80 passes the roller 70 but during this movement there is no to the linkage 23, 24, 20 and contacts since the roller 42 engages a part 90 of the cam 40 having a uniform radius. A trip-free mechanism comprises a latch 32 normally retaining a roller 31 on a pivot-pin 28 for the toggle link 24. The latch 32 is controlled by a solenoid 34 fed by a current transformer 35. The lever 29 on which the pin 28 is mounted has a return spring 49.
Patent GB-1092089-A (GB)
Title: Improvements in arrangements for the automatic control of lifts
IPC: B66B1/16
Filed: 1965-02-08
Abstract: 1,092,089. Automatic speed control. INVENTIO A. G. Feb. 8, 1965 [Feb. 10, 1964]; No. 5330/65. Heading G3R. A motor 11 which drives a lift has its speed regulated by a retroactive system, the reference voltage at terminals 12À5, 12À6, being controlled during the retardation period by series-connected potentiometers 15, 16. The potentiometer 15 is adjusted by synchronous motor 21 in accordance with time, whilst potentiometer 16 is adjusted by stepping motor 24 in accordance with the distance between the lift-cage and its destination. Contact 29 closes when the lift receives a signal to move to another floor, whereby synchronous motor 21 is energized to move tapping 15À1 upwardly, so increasing the reference voltage until the lift reaches its rated speed. A limit switch 17 stops the motor 21 at the end of the travel of tapping 15À1. A cam in the lift-shaft actuates a switch carried on the cage to reverse the motor 21 and reduce the reference voltage at a steady rate. The lift-cage also carries photo-electric apparatus 9 associated with punched strips in the region of each floor-level. At a short distance before the destination, a first pulse is generated by apparatus 9 which now comes into the region of the punched strip, this pulse passing through amplifier 25 to motor 24. Tapping 16À1 is moved downwardly by one step, and switch 19 is actuated to interrupt movement of tapping 15À1. On further travel of the lift-cage, the tapping 16À1 is shifted step-by-step, the reference voltage being reduced to zero at the desired floor-level. Thereafter, tapping 15À1 is returned to its original position, and pulse generator 27 returns tapping 16À1 to its initial position. The potentiometer 15 may be wound in a linear manner, whilst potentiometer 16 has a parabolic resistance-distribution. Alternatively, the holes in the punched strip may be distributed parabolically.
Patent GB-160455-A (GB)
Title: Method of extracting zinc from lead-slags, zinc-retort residues, poor zinc-ores or the like
IPC: C22B1/248
Filed: 1921-02-17
Abstract: 160,455. Rheinisch - Nassauische Bergwerks - H³tten - Akt. - Ges., and Spieker, A. March 17, 1920, [Convention date]. Distilling zinc; dry processes of extracting and recovering metals.-A method of extracting zinc from slags, retort residues, poor ores, &c., consists in treating in a shaft furnace briquettes consisting of the material mixed with such a proportion of basic or acid fluxes that the briquettes pass through the furnace unchanged until they reach the hottest zone, lime or silicic acid being present in the briquettes in excess. Zinc and lead are volatilized, and other metals such as iron, nickel, cobalt, copper, silver, and gold, present in theoriginal material, are obtained in the residue.
Patent GB-1409783-A (GB)
Title: Fluid pressure operated switch
IPC: H01H35/34
Filed: 1972-02-05
Abstract: 1409783 Fluid pressure actuated switches LUCAS ELECTRICAL CO Ltd 29 Jan 1973 [5 Feb 1972] 5476/72 Heading H1N In a fluid pressure operated switch a flexible diaphragm 17 of compressible material containing discrete particles of conductive material normally establishes a conductive path between a shoulder 12 of a hollow conductive body 10 and a conductive disc 15 yieldably loaded by a spring 16 whereby on application of fluid pressure the diaphragm 17 deforms to disengage the conductive disc 15 and break the electrical connection.
Patent GB-411237-A (GB)
Title: Improvements in shuttles of looms for weaving
IPC: D03J5/00
Filed: 1933-02-23
Abstract: 411,237. Loom shuttles. SHIMWELL, O., Gawsworth Old Hall, Gawsworth, Cheshire. Feb. 23, 1933, No. 5514. [Class 142 (iii).] A weaving shuttle is made with the slot or opening c for the insertion of a cop or pirn at the underside. The shuttle is chambered to follow closely the upper side of a full cop &c., and is of only slightly greater height than the diameter thereof. The chambering breaks through at f leaving the cop &c. exposed. The slot f is in an inclined face of the shuttle and its sides prevent the warps from fouling the cop &c. A ledge or groove h supports the weft trailing from the eye and prevents it from being trapped between the shuttle and the shuttle box. The ends of the shuttle are tapered and relatively long.
Patent GB-1291631-A (GB)
Title: Triazolobenzodiazepine derivatives
IPC: C07D487/04
Filed: 1970-02-05
Abstract: 1291631 Triazolobenzodiazepines UPJOHN CO 5 Feb 1970 [17 March 1969 29 Oct 1969] 5532/70 Heading C2C Triazolobenzodiazepines and their acid addition salts are prepared by the following route: (R=H, C 1-3  alkyl, Ph, PhCH 2 , COO(C 1-4  alkyl); R1=H, C 1-3  alkyl; R 2-5 =H, C 1-3  alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl or alkanoylamino, di-(C 1-3  alkyl)-amino, halogen, NO 2 , CN, CF 3 ), optionally followed by salt formation. The above compounds are sedatives, tranquilizers and muscle relaxants, and may be administered in the form of pharmaceutical and veterinary preparations containing them in association with a carrier.
Patent GB-508236-A (GB)
Title: Means for the control of hydraulic power transmitters
IPC: F16H45/00
Filed: 1938-02-22
Abstract: 508,236. Hydraulic power transmitters. VOITH, W., VOITH, H.; and VOITH, H., (trading as VOITH, J. M., [Firm of]). Feb. 22, 1938, No. 5631. Convention date, March 12, 1937. [Class 69 (ii)] In a hydraulic power transmitter provided with a plurality of turbo circuits, at least one of the turbo circuits; which comprises a rotary casing enclosing the vanes thereof, is provided with an annular collecting channel mounted on said casing and adapted to receive liquid discharged from the, associated turbo circuit through a controlled port, and a scoop tube is adapted to engage liquid in said collecting channel and to transfer such liquid to a duct which terminates within another of the turbo circuits of the transmitter, said port opening within the radially outer part of said collecting channel so that liquid, while flowing from said port to said scoop tube, does not traverse an air space. Valves 1, of the kind described in Specification 470,056, are.disposed on the outer part of a coupling 9 ; the discharge of these valves flows through ports 5 which open within the radially outer part of a channel 2 disposed laterally on one of the rotatable parts of the coupling, the external diameter of the channel slightly exceeding the external diameter of the driving casing of the coupling 9, and the maximum diameter of the inner surface of the channel 2 being somewhat larger than the outer profile diameter of the turbo circuit of the coupling 9. A scoop tube 3 projects into this channel ; its mouth may lie on a larger diameter than the outer profile diameter of the working circuit of the hydraulic coupling 9 ; it may be combined with a second smaller tube 3<1> serving for the reception of the oil discharged from the coupling, for taking off heat during normal operation, through restricted drain passages (not shown) which are in parallel with the valves 1 and which are permanently open. The liquid in the scoop tube 3 can be delivered directly through a valve 4 into the other circuit 10, a filling pump 6 which provides for replacement of the leak-off loss being shut off during this change-over process or being made smaller than previously usual. The valve 4 can be set so that the liquid delivered from the scoop 3 is discharged into a reservoir chamber. The scoop tube may be rockable and so connected with the valve 4 that on displacement of the scoop tube from its inner inoperative position to its outer operative position, the valve 4 is moved from a shut position into a position in which it puts the scoop tube into communication with the other turbo circuit. The turbo circuit 10 has an outlet duct 11.