baber/WOPTO huggingface dataset:
Patent GB-852394-A (GB)
Title: Apparatus for controlling the flow rate of air under pressure through a conduit
Inventor: BRAHM CHARLES BERNARD
IPC: F24F11/04
Filed: 1958-07-14
Abstract: 852,394. Ventilation systems for aircraft. UNITED AIRCRAFT CORPORATION. July 14, 1958, No. 22524/58. Class 137 [Also in Group XXIX] The flow rate of air along a conduit 12 from a supply end 14 through a nozzle 16 into a compartment 18 is determined by the position of a butterfly throttle valve 10 which is continuously adjusted so that the pressure at the nozzle 16 is always a predetermined amount greater than the variable pressure in the compartment 18 irrespective of variations in the supply pressure upstream of the valve 10. The valve 10 is actuated by a rack 26 controlled by a variable area diaphragm 38 and an opposed fixed area diaphragm 34 subject respectively to the supply pressure P1 and a reference pressure in the chambers 36, 32 of a housing 20. The chamber 36 is connected by a pipe 40 to the conduit 12. The reference pressure chamber 32 is connected to the pipe 40 via a restriction 44 and is connected via a pipe 46 to an orifice 48 which is controlled by a baffle 66 carried by a double diaphragm assembly 60, 62 subject to opposing pressures and in the end chambers 58, 56 of a housing 50 the central chamber of which receives the orifice end of the pipe 46 and is connected to atmosphere at 68. The chamber 58 is connected by a pipe 70 to the conduit 12 downstream of the valve 10. The chamber 56 is connected by a pipe 72 to the conduit 12 via two restrictions 74 between which is a spring-loaded relief valve 76 and to the compartment 18 via an orifice valve 78, 80 manual adjustment of which selects the flow rate from the nozzle 16. In operation, an increase in the supply pressure is reflected in chamber 36 to effect movement of the rack 26 to the left so moving the valve 10 towards its closed position. The sloping wall 52 of the chamber 36 reduces the effective area of the diaphragm 38 during this movement of the rack so that the movement occurs at a decreasing rate. Before the valve 10 can be adjusted there is an increase in the downstream pressure which is reflected in the chamber 58 to cause movement of the diaphragm assembly 60, 62, so that the baffle 66 leaves the orifice 48 with consequential dropping of the reference pressure in the chamber 32 so as to assist the movement of the rack 26. The closing of the valve 10 results in a lowering of the pressure at the nozzle so that the diaphragms 60, 62 return the baffle 66 to increase the reference pressure in the chamber 32 and so stop the movement of the rack 26. If the pressure in the compartment 18 decreases, the flow from the orifice 78 increases so lowering the pressure in the chamber 56 and moving baffle 66 from the orifice 48. The resulting decrease in the reference pressure in the chamber 32. again results in closing movement of the valve 10. If the valve 78, 80 is adjusted to fully open the orifice 78 the spring 82 overcomes the spring 84 to move the baffle 66 away from the orifice 48 and thereby reduce the reference pressure in the chamber 32 to a minimum and the valve 10 is thus fully opened.
Patent GB-1184313-A (GB)
Title: A method of producing 2-Chlorobutadiene-1,3
IPC: C07C21/21
Filed: 1968-05-13
Abstract: 1,184,313. Chloroprene. DENKI KAGAKU KOGYO K.K. 13 May, 1968 [19 May, 1967; 11 April, 1968], No. 22534/68. Heading C2C. Chloroprene is prepared by dehydrochlorination of 3,4-dichlorobutene-1 using an anion exchange resin, e.g. an OH-type strong base resin containing quaternary ammonium groups. The 3,4-dichlorobutene-1 may be used in admixture with 1,4-dichlorobutene-2, the chloroprene product being separated from the latter by distillation. The reaction is preferably carried out in a solvent such as an alcohol, cyclic ether, ketone or polyether at a temperature in the range 20‹ to 120‹ C.
Patent GB-1501062-A (GB)
Title: Corrosion inhibitors and processes for using the same
IPC: C02F5/10
Filed: 1976-06-01
Abstract: 1501062 Inhibiting corrosion MONSANTO CO 1 June 1976 [2 June 1975] 22573/76 Heading C7E A method of inhibiting corrosion of a metal in an equeous medium comprises maintaining in the medium a carboxylated lactone of the formula:- where R<SP>1</SP> and R<SP>2</SP> are individually H, alkyl, hydroxy, hydroxyalkyl,-COOM,-CHOHCOOM, - CH 2  COOM or a 1, 3 dioxolane-5 oxo group, and R<SP>3</SP> is H or -COOM, M being H, alkali metal, ammonium or alkylammonium. The metal protected is iron, steel, galvanized steel, Cu and its alloys, Al and its alloys, and brass. The pH is preferably 4-12, and the lactone is preferably maintained at a concentration of 3-500 ppm. Preferably the medium also contains a 1, 2, 3-triazole, e.g. 1, 2, 3-benzotriazole or 1, 2, 3-tolyltriazole, or a thiol of a thiazole, an oxazole or, an imidazole. Preferred lactones are 1, 3-dioxolane-4, 4-diacetic acid, 5-oxo 1, 3-dioxolane-2-carboxy-4, 4- diacetic acid, 5-oxo 1, 3-dioxolane-4-acetic acid, 5-oxo 1, 3-dioxolane-2-carboxy-4 methyl, 5-oxo 1, 3-dioxolane-2-carboxy, 5-oxo 1, 3-dioxolane-4-hydroxy acetic acid, 5-oxo 2, 2'-dicarboxy-4, 4'-bis (1, 3-dioxolane, 5-oxo) 2, 2'-dicarboxy-4, 4'-bis (1, 3-dioxolane-4- hydroxy, 5-oxo) The prefered alkylammonium ions include those of alkyl amines, alkylene amines and alkanol amines, of which several examples are given. The following may also be added to the medium: polycarboxylates, anti-foam agents, water-soluble polymers, tannins, lignins, polymeric anhydrides, phosphates, phosphonates, molybdates, nitrates, Ca and Mg salts (e.g. nitrates, sulphates, chlorides, bicarbonates) and silicates.
Patent GB-1468084-A (GB)
Title: Apparatus for frequency measurement or adjustment of piezoelect ric resonators
IPC: G01R1/30
Filed: 1974-05-21
Abstract: 1468084 Measuring resonant frequency F L SAUERLAND 21 May 1974 [21 May 1973]  22704/74 Heading G1U An apparatus for determining the resonant frequency of a Piezo-electric crystal 16 comprises a variable frequency signal source 2 whose output is split 4 and fed via substantially equal length coaxial transmission lines 6, 8 to a quadrature phase detector 10, one line including means for connecting the crystal 16 and also being terminated by a complex impedance including variable capacitors 20. In one embodiment, splitter 4 produces in-phase outputs and the mismatch at the complex termination of the line 8 comprising the detector 10 input and the capacitors 20 is used to vary the total phase shift along the line to produce a zero output from detector 10 when substitution resistor 14 is in place in network 12. Replacement of resistor 12 by crystal 16 produces an extra phase shift in line 8 and causes detector 10 to give an output. This is fed back to source 2 to vary the frequency until detector 10 gives zero output again indicating zero phase shift across the crystal i.e. resonance. The detector output is also indicated (36), Fig. 2 (not shown) and in one embodiment is used to control vacuum metallization of the crystal electrodes to produce a specified resonant frequency. In this case, the frequency of the source 2 is compared with a pre-set value and the difference controls the metallizing process. The effective resistance of the crystal may also be measured by monitoring the source frequency and measuring the change in phase shift, proportional to the detector 10 output near resonance, for a small change in source frequency.
Patent GB-1315703-A (GB)
Title: Transformers
IPC: H01F30/10
Filed: 1970-05-11
Abstract: 1315703 Electric transformers ELECTRICITE DE FRANCE 11 May 1970 [9 May 1969] 22730/70 Heading HIT [Also in Division H4] A transformer (Fig. 3) having different degrees of coupling between primary and secondary in the two directions, comprises at least one core limb 13 of high reluctance surrounded by a primary coil P and at least one core limb 11, 15 of weaker reluctance surrounded by a secondary coil S 1 , S 2 . Core limbs 12, 14 of an intermediate reluctance may be provided. Air gaps 22, 23, 24 are provided, gap 23 being longer than 22 and 24 and core limb 13 is of smaller cross-sectional area than cores 11, 12, 14, 15. Fig. 4, shows another embodiment using a single secondary coil which surrounds the primary and the inner core limbs. In either embodiment flux generated by signals picked up by the secondaries is "shunted" via the intermediate limbs while flux generated by the primary passes easily through limbs 11, 15.
Patent GB-484767-A (GB)
Title: Improvements in or relating to propulsion of cycles or other wheeled vehicles
IPC: B62M1/00
Filed: 1937-08-20
Abstract: 484,767. Cycle &c. driving-mechanism. PROSSER, T. J. Aug. 20, 1937, No. 22830. [Class 136 (ii)] In driving-mechanism for cycles and other vehicles of the type in which a road wheel is driven from a coaxial driving-member through a number of tension members, the driving- member is prevented from rotating backwards, relatively to the driven wheel, by means of a ratchet and pawl device, so as to maintain the tension members in tension during free-wheeling. As shown, a free-wheel sprocket 1 has its inner component provided with a laterally-projecting drum 3, Fig. 2, which is loosely mounted on the hub of the road wheel 2 and drives the wheel 2 through chains, cables, &c. 4 extending to the rim or other convenient part of the wheel. The members 4 are tensioned by springs 9 (preferably adjustable), or by turnbuckles or other screw-adjustment devices. The members 4 are maintained in tension during free-wheeling by means of a pawl 8, Fig. 5, carried by the inner member of the free-wheel and engaged with ratchet teeth on a member 10 rigid with the wheel hub. In a modification, the tension members consist of rods, &c. arranged between the wheel rim and lateral studs on the free-wheel.
Patent GB-187779-A (GB)
Title: Improvements in and relating to methods of making and repairing roads, paths, walls, roofs, and the like
IPC: C09D5/34
Filed: 1921-08-30
Abstract: Colloidal solutions of bitumen, asphalte, tar, pitch, resin, and the like in water are used as a surface dressing for roads &c. for dust-laying purposes.  A preferred composition, to be diluted for use with 19 times its volume of water, consists of 17 parts of Mexican asphalte, 33 parts of green tar oil, 1 part of soap or other dispersion accelerator, and 50 parts of water.
Patent GB-1191018-A (GB)
Title: Improvements in or relating to Cabinets
Inventor: RUITER JOHN DE
IPC: F16B12/48
Filed: 1967-05-18
Abstract: 1,191,018. Cabinets. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 18 May, 1967, No. 23069/67. Heading A4B. The legs of a cabinet are detachably secured thereto by engaging screws 4 on the cabinet with key hole slots 3 on the legs, and the top 7 of each leg engages the undersurface 8 of the cabinet top and a horizontal surface 9 on each leg engages the undersurface 10 of the cabinet bottom. Each screw 4 may be adjustably mounted on a plate attached to the cabinet.
Patent GB-531994-A (GB)
Title: Improvements in the automatic volume control of radio receiving sets
IPC: H03G3/22
Filed: 1939-08-10
Abstract: 531,994. Automatic volume control. GENERAL ELECTRIC CO., Ltd., and BRIGGS, A. J. Aug. 10, 1939, No. 23117. [Class 40 (v)] In a wireless receiver, delayed automatic volume control is attained by using the A.V.C, anode of a duo-diode, not to generate the A.V.C. voltage, but to impose a delay on an A.V.C. voltage generated in the final detector. The signal is applied through a tuned input circuit 4, 5, to the earthed cathode 1 and signal anode 2. The negative end A of the load resistor R, is connected through resistor R 2  to the A.V.C. anode 3, which is connected by resistor R 3  to H.T.+ and through low-pass filter R 4 , C 4  to the grids of the controlled valves. When the signal voltage is small the anode 3 is positive and current flows through the diode whose impedance is then small compared with R 2 . Thus while this is the case the potential of point B varies only slightly with change of signal voltage Once, however, the signal voltage increases sufficiently to drive anode 3 negative and render the diode non-conducting, the potential of point B will increase negatively in proportion to the signal strength.
Patent GB-499945-A (GB)
Title: Improvements in combined surfacing and boring machines
IPC: B23B29/034
Filed: 1938-08-05
Abstract: 499,945. Rotary tool heads. KEARNS & CO., Ltd., H. W., and KEARNS, H. W. L. Aug. 5, 1938, No. 23159. [Class 83 (iii)] The facing slide c, Fig. 1, of a combined boring and surfacing machine is displaced by means of a spiral face cam or . scroll plate f driving a rack h connected to the slide, through the intermediary of a helical pinion which meshes directly with the spiral face cam. The scroll plate f, Fig. 1, is driven in known manner from differential gearing o, p. The facing slide may be slotted tc provide for the boring bar e, Fig. 2, in which case two racks h are provided on the facing slide, one on each side of the slot, and the helical pinions i are arranged on a common shaft at right-angles to the racks. The pinions may, however, be arranged on separate shafts, radially with respect to the scroll plate and inclined to the racks. In a further arrangement, a single helical pinion meshing with the scroll plate is used, and spur wheels arranged on the shaft of the pinion engage with the racks on the facing slide.
Patent GB-851248-A (GB)
Title: Improvements in machines for moulding concrete or like plastic materials
Inventor: FERRIS STANLEY JAMES
IPC: B28B7/00
Filed: 1958-07-18
Abstract: 851,248. Concrete-beam casting machines. RAPID FLOOR CO. Ltd. July 15, 1959 [July 18, 1958], No. 23197/58. Class 87(2). A moulding machine comprises a rigid frame 1 including two side members which consist each of a channel 12 of larger sections and a channel 13 of smaller section arranged to give vertical plane parallel opposite faces, a horizontal bed 17 comprising a T-section bar and a pair of jacks 24 operable to move the bed between the side faces, the jacks being so spaced that the overall horizontal deviation of the bed under the load of the material whilst it is being raised is a minimum. The channels 13 also guide a plough, not shown, which is moved along the length of the channels, e.g. by a winch and cable, to form a profile on one face of the cast beam. The opposite face is shaped by a pallet, not shown, which rests on the bed 17. When wear takes place the channels 13 are cheaply replaceable. The channels 12 are supported by channels 7 (" feet ") with slots in their webs by which they are attached, by bolts 8, to channels 5 (" saddles "), so providing for adjustment of the width of the mould. The slots have recesses in their sides to give definite locations. In its bottom position the bed 17 rests on angles 14, through vibration-damping rubber pads 20, and there is clearance between it and the mould sides for the escape of excess concrete. The bed 17 is guided between the mould sides by short lengths of angle iron 32 which project from its leg 19 and are sloped so that they pass the point between the members 12, 13 with a scissors action. The rams 28 of the jacks 24 have spaced plates 29 with semi-circular recesses 30 in which rest part circular members 31 secured to the bed 17 and the cylinders 25 of the jacks are pivoted to the base of the frame, so allowing a self-adjusting movement of the bed. In operation, a pallet is lowered on the bed, with ends to determine the shape of the ends of the beam, or of the beams if more than one is cast end to end. The mould is partly filled, reinforcement is positioned on the concrete, and the remaining concrete is poured in. Electrical vibrators 33, bolted to members 34 secured to the leg 19 of the bed, are then operated. The plough (or, alternatively, rollers) is then moved along the top of the mould. The moulded beam is then lifted clear, by elevation of the bed 17, and slid on its pallet from the machine on rails which are hooked on to the side members. The frame 1 is adapted for lifting by a wheel jack by constructions 37, 38 on its ends, for transporation.
Patent GB-654298-A (GB)
Title: Improvements in engine-starters
IPC: F02N15/02
Filed: 1947-08-21
Abstract: 654,298. Turning gear. MINIE, V. J. Aug. 21, 1947, No. 23232. Convention date. March 28, 1939. [Class 7(v)] In a starter for internal-combustion engines and the like comprising an axially movable driving claw 4 with an extension 4a embodying a coarse-pitch screw-thread engaging a nut member 5, power means, such as hand turning-gear, an electric, hydraulic or pneumatic motor (not shown), or an auxiliary internal-combustion engine 35, for driving the nut member, means including a friction clutch 10a for operatively connecting the power means to the nut member, and a pinion 7 loosely mounted on the extension and engaging gear sectors 13 on shafts 12, upon which latter are located helical springs 16 to load the clutch, the pinion 7 is clamped between an abutment 6 on the extension 4a and an abutment on the nut 5 when the claw 4 is engaged with the engine whereby relative movement between the clutch discs will result in axial movement of the shafts 12 to increase the initial loading on the clutch discs. The planet carrier 20 of a speed-reducing gear, which is driven from the power means 35, has mounted upon it double planet pinions 26a and 26b, the former meshing with a gear wheel 30 and the latter with both an annulus 25 on a housing 8 and with the pinion 27 of a flywheel 27a. The gear 30 is externally threaded and co-operates with a nut 31, which at starting locks the gear wheel 30 to the starter casing 2, but when the engine has started unlocks gear 30 and forms a free-wheel device. The axial loading and slip of the clutch 10a is a minimum when the starting operation is commenced. The teeth of the section 13 and the pinion 7 are mutilated to prevent jamming, as well as being offset with respect to one another relatively to the pinion teeth in order to assist in the return of the apparatus to the inoperative position. The maximum load the clutch 10a can transmit is obtained when the sectors 13 have rotated far enough to become disengaged from the pinion 7. If the claw 4 and the pinion 7 remain stationary, upon the former engaging the engine, the shafts 12 are driven in a gyratory movement thereby increasing the loading of the clutch. When the claw 4 is cammed back to the disengaged position after the engine has started the pinion 7 is released from between the abutments the compressed springs 16 acting on the shafts 12 to restore them to their initial position.
Patent GB-814289-A (GB)
Title: Improvements in or relating to low pressure thyratrons
IPC: H01J17/56
Filed: 1955-08-11
Abstract: 814,289. Thermionic valves. M-O VALVE CO. Ltd., COOK, K. G., and ISAACS, G. G. July 27, 1956 [Aug. 11, 1955], No. 23237/55. Class 39(1). The anode of a thyratron is surrounded by the control electrode, and between them is interposed another electrode which also surrounds the anode, the arrangement being such that no lines of force exist between any adjacent pair of these electrodes which are more than twice as long as the minimum spacing between them. In the Fig., the control electrode 4 is shown as a cylindrical box 20 with plane ends 21, 22 parallel to the anode 6. The end 22 is perforated, and screened by a baffle 23. Concentrically within this electrode is a similar box-like electrode 5, acting as an auxiliary anode. This also has plane ends 16, 17 parallel to the anode, and a baffle 18 screening a perforated part. Suitable spacings are given for all these electrode parts. In operation, when 50 kV are applied to the main anode, the auxiliary anode is tapped off at 25 kV. The control electrode is at cathode potential, so that a p.d. of only 25 kV exists between control electrode/auxiliary anode, and auxiliary anode/main anode, which is not sufficient to cause breakdown with the specified electrode spacing and gas filling, which is hydrogen at ¢ mm. The anode 6, auxiliary anode 5, and control electrode 4 are supported by a series of coaxial glass sleeves 14, 30, 34, 37, united with the glass envelope at their upper ends. Between and adjacent these are disposed nickel sleeves 31, 39, and nickel gauze sleeves 35, 38. Sleeves 31 and 35 are attached to the auxiliary anode, enclosing between them the lead 9, and sleeves 38 and 39 are attached to the control electrode. By thus reducing the lengths of the lines of force between neighbouring electrodes, the possibility of breakdown is reduced, giving a higher holdoff voltage for the particular conditions obtaining.
Patent GB-811614-A (GB)
Title: Improved method of and improved means for producing decorative plaques, ornaments, and/or motifs depicting pictorial and/or other designs
IPC: B44C3/12
Filed: 1957-07-23
Abstract: 811,614. Pictures; ornamenting. SHELDON, A. July 23, 1957, No. 23257/57. Classes 11 and 93 [Also in Group X] A pictorial or decorative panel is composed of pieces of coloured plywood approximately 1¢mm, thick which have been cut before colouring from a plywood sheet by a knife-edged device under pressure and then affixed in re-assembled posisition on to a rigid backing.
Patent GB-925909-A (GB)
Title: Process for the manufacture of 1-bromo-1-chloro-2:2:2-trifluoroethane
Inventor: CHAPMAN JAMES
IPC: B01J27/06
Filed: 1960-07-05
Abstract: 1-Bromo- 1-chloro- 2,2,2-trifluoroethane is prepared by heating 1,2-dibromo-1-chloro-2,2-difluoroethane with substantially anhydrous hydrogen fluoride in the presence of an antimony fluorochloride catalyst, at least part of the antimony being in the pentavalent state.  The preferred temperature range is p  70-160 DEG C. Specifications 767,779 and 805,764 are referred to.
Patent GB-615701-A (GB)
Title: Improvements in reciprocating lubrication pumps
IPC: F16N13/14
Filed: 1946-08-07
Abstract: 615,701. Lubricating pumps. ETABLISSEMENTS H. HAMELLE SOC. ANON. Aug. 7, 1946, No. 23443. Convention date, Aug. 8, 1945. [Class 102 (i)] A lubricating pump comprises a body 1 having a number of parallel cylinders 2 disposed around the axis of the pump, and pistons 3 operated by a cam 4, rotatably mounted on a shaft 7 which is connected by a key 25, having a projection 26, to a wheel 22 in mesh with a screw 23 driven by the pump engine. A plate 12, secured by screws 11 to the body 1 and provided with orifices 13 opposite the lower opening of each cylinder 2, bears upon a rotatable member 14 connected to the shaft 7. The member 14, which is provided with a semicircular port 16 whereby the orifices 13 are put into communication with a chamber 18 connected by a pipe 20 to an oil inlet 21, is applied to the plate 12 by a spring 30, assisted by the discharge pressure and, bearing on a cup 31 slidable in an elastic packing ring 32. The underside of the plate 12 and the upper face of the cup 31 are provided with oil recesses. Oil is first drawn from the chamber 18 through the port 16 and the orifice 13 to each cylinder 2 from which it is discharged through a conduit 34 to a lubrication tube 36. To disconnect the wheel 22 from the shaft 7 and effect the manual rotation of the plate 14 by a handle 40, a sleeve 42 is pressed axially to displace the projection 26 from its seating in the shaft 7, by means of a rod 49, to a position below the lower face of the shaft 7. A screw 6 permits the regulation of the stroke of the pistons 3.