baber/WOPTO huggingface dataset:
Patent GB-807608-A (GB)
Title: Methods of and apparatus for producing tubulures along a generatrix of a header
IPC: B21C37/29
Filed: 1957-08-02
Abstract: 807,608. Making tubular fittings; stamping. HUET, A. Aug. 2, 1957 [Oct. 18, 1966], No. 24634/57. Classes 83 (2) and 83 (4). A method of producing tubulures along a generatrix of a header by compressing the wall of the header between a punch mounted on a supporting bar positioned inside the header and a die applied externally to the wall of the header, the wall having been previously heated and, if necessary, pierced at the places where it is desired to form the tubulures, is characterized in that for the purpose of producing a series of tubulures simultaneously, the bar d introduced into the interior of the header tube a comprises a complete series of punches e and a shell f conforming to the outside of the wall of the header comprises as many dies g as there are punches e. The header is arranged on a supporting base c and the bar d is positioned inside the header. After heating the header along the generatrix A-A and applying the shell f, the bar d is displaced in the direction of the arrow C to form the tubulures h (Fig. 2). The punches are disengaged from the tubulures either by raising the base c whilst holding the bar stationary or by lowering a rod i carrying counter-punches i<SP>1</SP>.
Patent GB-600615-A (GB)
Title: Improvements in or relating to control devices for electric motors
IPC: G05D16/20
Filed: 1944-12-08
Abstract: 600,615. Actuation of switches. BENDIX AVIATION CORPORATION. Dec. 8, 1944, No. 24666. Convention date, Dec. 11, 1943. [Class 38 (v)] A control device, e.g. for a pump motor used in connection with an air-speed indicator comprises a pair of pressure responsive members 18, 20, which are subjected to the action of different pressure sources, and a normally balanced inertia member 35 acted upon by forces applied by each of the members 18, 20, at pre-determined points on the inertia member to exert a controlling action depending on a balance condition between the pressures controlling the members 18, 20. These members 18, 20, which are shown as expansible capsules, are respectively mounted on supports 28, 29, and are respectively connected to the pressure in a pitot tube 16, and pump pressure in a tube 17. The inertia member 35, together with a contact arm 43, is carried by a shaft 34 supported by bars 30 joining supports 28, 29. The expansible capsules 18, 20, bear on opposite sides of the member 35, so that when the pressures are balanced, the contact arm 43 is separated from its corresponding fixed contact 26 which is adjustably attached to the support 29. If the pressure in the expansible capsule 18 increases, due to an increase in air-speed, the member 35 is moved anti-clockwise (as viewed in Fig. 5) and the contacts 26, 43, close to energize the pump motor (not shown). The consequent pressure rise in capsule 20 moves the member 35 back to its normal position and contacts 26, 43, are separated. The condition of equilibrium is maintained by the continued intermittent repetition of this operating cycle. Specification 590,518, [Group XXXV], is referred to.
Patent GB-721677-A (GB)
Title: Improvements in or relating to electric vacuum control devices
IPC: H01H35/24
Filed: 1951-10-23
Abstract: 721,677. High vacuum diffusion pumps. VOGT, A. Oct. 23, 1951. [Oct. 23, 1950; Oct. 2, 1951] No. 24733/51. Class 71. A thermally-operated bimetallic switch 20, 21, Fig. 5, and a gas discharge gap 26, 28 are located in a space associated with a high vacuum diffusion pump so that when the pressure in the space falls below a predetermined value switch 20, 21 closes, owing to the change in thermal conductivity of a gas with change in pressure, to energize a solenoid 34 opening a valve connecting the pump to the space, the valve then being maintained open by relays 38, 39 unless the pressure should rise above a predetermined value at which discharge gap 26, 28 conducts to de-energize solenoid 34 without delay to isolate the pump. Bimetallic element 16<SP>1</SP> carrying contact 20 is heated by a constant current from a winding 33 of a mains transtormer 30 so that the temperature it attains is dependent on pressure. Element 18<SP>1</SP> carrying contact 21 is also bimetallic and compensates for ambient temperature variations. Separate resistance or high-frequency induction heating of element 161 is referred to. Construction of the thermally-operated switch and the gas discharge gap is shown. Control of electric heating for vaporising the motive fluid of a high vacuum diffusion pump instead of controlling the valve is referred to.
Patent GB-1222158-A (GB)
Title: Polyurethane coating compositions
Inventor: OGINO AKIRA
IPC: C08G18/62
Filed: 1968-05-23
Abstract: 1,222,158. Polyurethane coating compositions. TAKEDA CHEMICAL INDUSTRIES Ltd. 23 May, 1968 [23 May, 1967 (2)], No. 24743/68. Headings C3P and C3R. [Also in Divisions B1-B2] Two-can polyurethane coating compositions comprise a polyester polyol component and an isocyanate component which is an adduct produced by reacting trimethylolpropane with dimethylbenzene-#,#<SP>1</SP>-diisocyanate in a molar ratio of the former to the latter of 1 : 7 to 1 : 16 and removing unreacted dimethylbenzene- #,#<SP>1</SP>-diisocyanate. The polyester polyol may be (a) a fatty acid-modified polyester polyol having 4 to 7 OH groups in the molecule, a molecular weight of 200 to 600 per OH group and terminal mono or diglyceride groups; (b) a copolymer having a M.W. of 1500 to 8000 and an OH number of 30 to 180 and being the reaction product of hydroxyethyl methacrylate and a compound of formula where R is hydrogen or a methyl radical and R<SP>1</SP> is a C 1-4  alkyl radical, with or without styrene, (c) a saturated polyester polyol which has 3 OH groups in the molecule and a M.W. of 250 to 500 per OH group and which is prepared by reacting adipic acid, a C 2-8  glycol and a C 3-6  triol, or (d) an isocyanate modified polyester polyol produced by reacting (i) a polyester of M.W. 500 to 3000 and which is prepared by reacting adipic acid and a C 2-10  glycol with or without a C 3-6  triol, and (ii) dimethylbenzene- #,#<SP>1</SP>-diisocyanate, with or without a C 2-10  glycol in a molar ratio of 0À95#NCO.OH< 1À0. The reaction between the trimethylolpropane and dimethylbenzene - #,#<SP>1</SP> - diisocyanate is suitably conducted at 60 to 80 C. and the unreacted diisocyanate removed by extraction with a solvent. Additives such as pigments or dyes, solvents, viscosity regulators, fillers, antioxidants and levelling agents may be added preferably to the polyester component before admixture with the isocyanate component. As the dimethylbenzene-#,#<SP>1</SP>-diisocyanate, any of the ortho, meta and paracompounds, or a mixture thereof may be used. The preparation of several polyesters of the classes (a), (b), (c) and (d) is described.
Patent GB-500131-A (GB)
Title: Improvements in hydraulic torque-converters of the kinetic type
IPC: F16H41/30
Filed: 1937-09-10
Abstract: 500,131. Hydraulic transmission of power. VOITH, W., VOITH, H., and VOITH. H., (trading as VOITH, J. M., [Firm of]). Sept. 10, 1937, No. 24765. Convention date, Sept. 10, 1936. [Class 69 (ii)] A variable-filling torque converter is provided with an air-venting port or ports debouching from' the working circuit at the part thereof where minimum pressure exists during filling and leading to the outside of the circuit. In a torque converter comprising impeller A, turbine B and stationary reaction member C, and provided with valve-controlled filling and emptying ducts G, K, air which collects at the low pressure region c<2> during filling passes through ports c<1> formed in that part of the core guide ring which is carried by the reaction member into the space d' which is separated from the remainder of the core space D by a partition E, and thence to one or more air-escape ducts F leading to the exterior. These ducts may communicate as shown with a tube dipping below the oil level in a reservoir so that if during operation auction occurs in the space c<2> liquid and not air is drawn into the working circuit. The ducts may be connected to a cooler for cooling the liquid which escapes through the airvents when the circuit is full; means may be provided for closing the air-vents at the end of the air-venting period. The air-venting arrangement, which is also applicable to multi-stage torque converters, permits rapid filling, and therefore rapid take-up of torque as required on land vehicles.
Patent GB-732990-A (GB)
Title: Improvements in or relating to variable coupling means for microwave electromagneticenergy
IPC: G01S19/21
Filed: 1952-10-03
Abstract: 732,990. Adjustable micro-wave couplers. NATIONAL RESEARCH COUNCIL. Oct. 3, 1952 [May 14, 1952], No. 24874/52. Class 40 (8). [Also in Group XL (c) ] Adjustable coupling probes 16, 34 (Fig. 8) between waveguides 10, 15 and 33, 15 consist of a shaft of dielectric material 50 rigidly attached to screw member 51 electrically connected to the wall of guide 15. The end of shaft 50 which protrudes into waveguide 10 or 33 is provided with a conducting sleeve 54 held in place by pin 55 (Fig. 9). Sleeve 54 slides inside and makes electrical contact with the bushing 56 which is exposed to the inside of guide 15, held by the insulating bushing 57. The coupling may be used in a dual mixer for a superheterodyne radar receiver, in which the single waveguide 1, Figs. 2, 3, carries both the transmitted signal to the antenna (not shown) and the received signal energy from the antenna, mixes the received signal, and, for frequency-control purposes, a sample of the outgoing signal, with the output of a local oscillator tube 17 mounted in socket 20 on waveguide 15. The local oscillator 17, Fig. 6, delivers energy to waveguide 15 via probe 18, the energy flowing in both directions in the guide. Matching posts of conductive material 23, 24 are mounted in depressions on either side of probe 18 and dissipative loads 29, 32 are provided at each end of wave-guide 15 beyond its junctions with wave-guides 10 and 33. Wave-guide 15 is coupled by the adjustable couplers 16, 34 as described above, to waveguides 10, 33 in which crystal mixers are mounted at 12 and 35. A sample of the outgoing signal is taken from guide 1 to the mixer crystal in guide 33 via a resistiveattenuated coupling between guides 1 and 33, Fig. 5 (not shown). The received signal from the antenna is applied to the mixer crystal in guide 10 via the guide 4 and the transmitreceive switch 6. An anti-T.R. switch may be provided between the junction of waveguides 1 and 4 and the magnetron coupled at coupling member 2. Specification 733,014 is referred to.
Patent GB-426633-A (GB)
Title: Improvements relating to presses for cutting metal and other sheets
IPC: B21D28/08
Filed: 1933-09-08
Abstract: 426,633. Punching. GRIFFITHS, H. A., 8, Chad Road, Edgbaston, Birmingham. Sept. 8, 1933, No. 24903. [Class 83 (iv)] Metal - sheet feeds.-In a quincunx &c. feed mechanism, a slide on an inclined guide is given intermittent movement up the guide by a reciprocating rack and intermittent downward movement by gravity. The punch, die and bed of the machine are inclined. A guide c carrying a bed d slides along a bar a fixed to the frame for spacing the rows. On the bed d a guide e carrying a slide f with work clamps slides for spacing the blanks in a row. The guide e, Fig. 2, carries two fixed racks n, o and a rack p reciprocated by levers g engaging respectively pawls q, s, r, on the slide f. The rack p in its upward movement feeds the sheet upwards one hole pitch and during the return of the rack p the slide is held by pawl q engaging rack n. When the slide reaches the end of a row, the pawls r, q, are made inoperative by a tappet 3 on the bed d engaging a lever 2 and the slide returns bygravity under control of the pawl s and rack o. The pawl s is released intermittently for this movement by a bar 12 reciprocated by the cranks y raising a bar 7 engaging the pawl. When the slide f reaches the lower position a tappet 15 rocks the lever 2 to reverse the pawl action. For spacing the rows, the bed d is moved along the bar a, Fig. 3, by a continuously reciprocating bar 16 carrying a pawl 17 held out of action during the punching of a row by a bar 20. The bed is held by a pawl k with inclined edges engaging a rack j on the guide c during the punching of a row. At the end of a row the bar 20 is reciprocated by a cam and lowered by links 21 to free the pawl 17 which engages the rack j on the guide c to effect movement. The bed is returned when free of the pawl by a mass m. To vary the spacing of the holes, the racks are made removable and the pawl k is adjustable. To stagger the holes in alternate rows the rack o is set to drop the slide f half a hole pitch at the start of the downward movement.
Patent GB-698384-A (GB)
Title: Rotary shear, particularly slitting shear
IPC: B23D19/06
Filed: 1951-10-25
Abstract: 698,384. Shearing. HYDROPRESS, Inc. Oct. 25, 1951 [Oct. 27, 1950], No. 24973/51. Class 83 (iv). A rotary-blade shearing machine has blades 38 on shafts 37 carried by auxiliary slides 36 adjusted by screw mechanism on main slides 29. The latter carry shafts 31 with blades 34 and are adjustable by rack mechanism in an upper frame 12. A lower frame 11 carries similar slides and blades. Rotation of the blades is effected through flexible couplings 40 and keys between shafts 39, 31, 37. By adjusting the screws and the rack mechanism the blades 38, 34 on each frame may be adjusted transversely independently. The upper frame 12 is adjusted on posts 13, secured to the lower frame 11, by screw mechanism, and is counterpoised by bolts 21 secured to the frame and raised by springs 22 supported by cross-heads 17 engaging the ends of the posts 13.
Patent GB-369144-A (GB)
Title: Improvements in straining arrangements for vacuum drying apparatus
IPC: F26B11/04
Filed: 1931-09-05
Abstract: 369,144. Vacuum drying apparatus. JONSSON, A. E., Liding÷, Sweden. Sept. 5, 1931, No. 25015. Convention date, Sept. 25, 1930. Drawings to Specification. [Class 34 (ii).] In rotary drum vacuum drying apparatus such as that described in Specification 288,341, having a strainer which is cleansed automatically by a rotatable toothed holder weighted eccentrically, the ends of the straining slots are recessed radially, whereby the cleansing teeth push out the impurities gathered in the slots.
Patent GB-789868-A (GB)
Title: A compound product for disinfecting or sterilizing paper-making pulps
IPC: D21C9/00
Filed: 1956-08-16
Abstract: 789,868. Sterilizing paper pulp. PROCHIM SOC. ANON. Aug. 16, 1956 [Aug. 29, 1955], No. 25056/56. Class 96. The formation of bacterial slimes in paper pulp is inhibited by incorporating organic mercury compounds and an isolating agent, e.g. ethylene-diamine tetra-acetic acid, n-hydroxyethyl ethylene-diamino tri-acetic acid, nitrilehydroxy di-acetic acid, or n-dihydroxy ethyl glycine, to prevent the precipitation of mercuric sulphide due to the generation of hydrogen sulphide by bacteria. The mercury compound may be alkyl, aryl, alkaryl, or alkoxyalkyl.
Patent GB-870930-A (GB)
Title: Improvements in and relating to the production of columbium and tantalum
IPC: C22B34/24
Filed: 1959-07-22
Abstract: Tantalum or niobium is produced by (a) preparing a powdered mixture (1-40 m  particle size) of carbonaceous reducing agent and an oxide of the required metal, the oxide being present in an excess up to 15% of the stoichiometric proportion, (b) heating the mixture, under reduced pressure and at such a rate that the formation of fused suboxidic compounds is avoided, to a temperature between 2000 DEG C. and the melting point of required metal until substantial evolution of gas ceases and (c) cooling the resultant metal under noncontaminating conditions.  The metal oxide is preferably niobium or tantalum pentoxide and the reducing agent graphite, lampblack, acetylene black or thermatomic carbon.  The mixture may be heated in an induction furnace and the preferred rate of temperature increase is 150-300 DEG C. per hour. The metal is cooled in the furnace, initially under vacuum and finally under an inert gas e.g. helium or argon.  Oxides of readily volatilized metals e.g. calcium, barium, strontium and aluminium may be added to the reaction mixture and the mixture may be compacted at 1500lbs. per square inch before heating to provide a massive product.
Patent GB-829459-A (GB)
Title: Improvements relating to cross bottom valve bags
IPC: B65D30/24
Filed: 1957-08-08
Abstract: 829,459. Multi-ply valve bags. HOUSEL, C. Aug. 8, 1957 [Aug. 9, 1956], No. 26095/57. Class 94(2)  In multi-ply cross-bottom valve bags having incisions 2, 3 in at least the outer ply, the incision 3 for the side opposite the valve is made longer than the usual incision 2 and is arranged so that, on folding the inner flaps 6, 7, the incisions 3 intersect the projected fold lines 4a, 4b outwardly of and away from the ends whereby upon closing the outer flaps 6a, 7a triangular tips 8a, 8b, Fig. 8, are formed which project beyond the ends of the fold edges and are stuck together to form a dust-tight seal. Such tips are provided on both sides of the bottom of the bag and on one side of the top, the other side of the top being made in the ordinary way to take the valve hose.
Patent GB-654239-A (GB)
Title: Improvements in or relating to simple expansion steam engines more particularly for marine installations
IPC: F01B17/04
Filed: 1946-08-23
Abstract: 654,239. Steam engines; valve gear. ALESSIO, G. Aug. 23, 1946, No. 25202. Convention date, July 21, 1944. [Classes 122(ii) and 122(iii)] In a simple expansion, double acting, multi-cylinder steam engine having a valve gear controlled by independently variable rotary cams which provide for regular operation of the engine with a low cutoff, starting of the engine with a high cutoff, stopping of the engine by setting the reverse control at its mid position, and coupling of the engine with an exhaust steam turbine operating only during forward running with the compression period of the engine in forward gear adjusted so as to provide a final compression which is nearly constant under varying loads, and in reverse gear to have the engine operating only in uniflow, means are provided for correcting the effect exerted by the obliquity of the connecting rods on the cut-off. The engine has cylinders of the uniflow type having auxiliary exhaust valves, and a condenser, said auxiliary valves being controlled by combined action rotating cams so adjusted as in forward gear, to ensure an exhaust period increased proportionately to an increase in load so as to obtain a substantially constant ratio of compression to exhaust pressure and turbine feed pressure, and in reverse gear, to ensure that a maximum compression is obtained, the exhaust of the engine in this latter case being directly to the condenser. The poppet valve system employed is operated and controlled as described in Specifications 654,240 and 654,241. The obliquity of the connecting rod is compensated by adjusting the cut-off by means of apparatus comprising a pair of beams B mounted oppositely to each other on either side of the opening cams A1 and the closing cams A2 for each valve V1 and rollers R1, R2 provided at either end of the beams, which rollers bear on the opening and closing actuating cams for the valves, and are so arranged that the distance d1 between the rollers is different from that. d, between each pair of cams A1, A2, so that the rollers which bear on the closing cams of each pair, in forward gear, move in advance or delay with respect to those bearing on the opening cams.
Patent GB-812148-A (GB)
Title: Improvements in vehicle rear lamp assemblies
IPC: F21V5/00
Filed: 1955-09-02
Abstract: 812,148. Vehicle lamps. GENERAL MOTORS CORPORATION. Sept. 2, 1955 [Sept. 27, 1954], No. 25265/55. Classes 75(2) and 75(4) A vehicle rear lamp comprises a housing 3 containing a bulb 26, a plane inner lens 31 having a plurality of concentric prismatic rings 65, 67 on its inner surface and arranged across the open face of the housing, an outer lens 5 mounted in front of the inner lens 31 and a ring 9 disposed about the housing and adapted to engage a surface supporting the lamp, a part of the ring 9 lying in the plane of the inner lens 31. The housing comprises an upper section 13 for a combined rear and stop light and a lower section 15 for a reversing light. The inner lens 31 extends across the open face of the upper section 13 and is clamped thereon by the outer lens 5 which is secured to the housing 3 by a bolt 35. Alternatively the lenses 5, 31 may be welded together. The inner lens is tilted downwardly but the light is emitted horizontally by horizontal upwardly refracting prisms 69 on the front face of the lens and by locating the. centre P of the bulb filament below the axis A-A of the lens. Alternatively the inner lens 31 may be tilted upwardly and the centre P of the bulb filament located above the axis A-A and the refracting prisms 69 made downwardly refracting, or the inner lens may be vertical in which case the refracting prisms 69 are not provided. The lower section 15 has a plug 43 which can be replaced by a bulb and socket assembly. The lens 7 for this section has prismatic rings 51 on its curved front wall and its 'top and bottom walls 47, 49 extend rearwardly to abut the housing 3. The lens is held by a plate 55 which abuts ribs 53 on the bottom wall 49 and is secured to the housing 3 by a bolt 57. The ring 9 is secured to the housing by bolts 59 and clamps a trim member 63 over the adjacent edges of the outer lens 5 and the lens 7. The outer lens 5 is red and has a reflex portion 41.
Patent GB-244227-A (GB)
Title: Improvements in or relating to wireless receiving apparatus
IPC: H04B1/18
Filed: 1924-10-24
Abstract: 244,227. Combe, J. W. Oct. 24, 1924, No Patent granted (Sealing fee not paid). Atmospherics and undesired signals, eliminating or limiting. - A separate tuning unit 4, adapted to be bridged across the aerial and earth terminals 2, 3 of a wireless receiving set, comprises a plug-in coil 6 and a variable condenser 7 which can be inserted either in parallel or series with the coil 6 by means of plug-and-socket connections 8, 9, and 10, 11, 12 respectively. If the receiver is tuned say to receive London, this station can be cut out, in favour of say Bournemouth, by connecting the tuner unit 4 as shown, and suitably adjusting the values of the coil 6 and condenser 7. Either station can then be heard at will according as the tuner 4 is connected to or disconnected from the aerial. The tuner unit may also be employed to eliminate interference from Morse or other stations working on a neighbouring wave-length.
Patent GB-502540-A (GB)
Title: Apparatus for supplying luminescent discharge tubes with current
IPC: H05B41/24
Filed: 1937-09-18
Abstract: 502,540. Generating high - frequency oscillations. SOC. ANON. FONCIERE INDUSTRIELLE & COMMERCIALE. Sept. 18, 1937, No. 25403. Convention date, Sept. 18, 1936. [Class 40 (v)] [Also in Group XXXV] An oscillatory system for supplying current to a discharge lamp 7 from a D.C. source 2 comprises at least one thermionic valve 6 with filament or cathode 4 energized through a resistance 5 in the positive supply lead, with grid 8 connected to one electrode of the lamp 7, and with the anode 3 connected to one end of the primary of a transformer 1, the other end of the primary being connected to the positive lead while the other electrode of the lamp 7 is connected to the secondary of the transformer. In a modification, Fig. 3, two thermionic valves 6, 6a are combined to form an amplifier. Condensers 9, 10 and switches 11, 12 may also be provided, the condenser being brought into the circuit when the switches are moved to the left. This is stated to produce a chain effect involving the appearance of fixed or moving rings in the lamp.