baber/WOPTO huggingface dataset:
Patent GB-679931-A (GB)
Title: Improvements in or relating to blades for turbines or the like
Inventor: WHITEHEAD FREDERICK WILLIAM
IPC: F01D5/18
Filed: 1949-12-02
Abstract: 679,931. Turbine blades. BRISTOL AEROPLANE CO., Ltd. Nov. 20, 1950 [Dec. 2, 1949], No. 31075/49. Class 110(iii) In a turbine or the like blade having internal passages through which a cooling medium flows from the root end of the blade into the part of the blade towards the leading edge and then transversely through the blade, the internal passages comprise a main conduit 18 extending lengthwise of the blade at the front part thereof stopping short of the blade lip, and a plurality of separate channels 21 branching from the main conduit and spaced along the blade from the root end towards the tip, the cooling medium being discharged at or near the trailing edge of the blade. The body portion 14 of the blade is found with surface channels in either the concave or convex surfaces or in both, and the channelled face is covered by a plate 15 to define the internal passages, the plate being secured to the body portion by soldering, brazing or welding. The groove constituting the main conduit 18 is connected by a hole 20 to the hole 16 by which the cooling medium enters, and may be of constant depth along its length or may decrease in depth towards the blade tip. The branch channels 21 extend slightly beyond the trailing edge of the cover plate 15 so as to form outlets 27 for the cooling medium. The branch channels may be either uniformly or non-uniformly spaced along the blade and may be of differing cross-sectional areas to obtain a more even temperature distribution. The cooling medium may be air under pressure. The invention is applicable to either rotor blades or stator blades. Dimensions are given.
Patent GB-771955-A (GB)
Title: Production of pigmented polymers of ethylene
IPC: C08J3/20
Filed: 1955-11-03
Abstract: Pigmented polymers of ethylene or copolymers containing at least 90 per cent by weight of ethylene are prepared by intensively mixing the polymer under pressure in a totally enclosed chamber until the temperature has risen above the melting-point, adding the finely-divided pigment to the molten material and mixing the pigment therewith in the chamber under pressure, e.g. at least 25 p.s.i. at least until the temperature of the mixture is above the melting-point of the polymer.  The polymer may be mixed with the pressure released after melting and prior to the addition of the pigment, and the mixing may be stopped during the addition of pigment and gradually resumed. After mixing the pigment and polymer under pressure the pressure may be released and the mixing continued.  Carbon black, ultramarine blue, cadmium red, phthalocyanine green, and titanium dioxide are mentioned and amounts of 0.01 to equal parts of pigment to polymer may be used.  A suitable mixer has an enclosed chamber fitted with rotors having different peripheral speeds, e.g. a Banbury type mixer having a pressure head or ram inserted in the hopper.
Patent GB-441956-A (GB)
Title: Improvements in the manufacture of acetic anhydride
Filed: 1934-11-03
Abstract: Acetic anhydride is produced by thermal decomposition of acetic acid in presence of a small quantity of a volatile phosphorus-containing substance (excluding phosphoric acid) and of a small quantity of a volatile basic or base-yielding nitrogen compound.  Alternatively, the reaction may be effected in presence of the phosphorus-containing substance alone, and the nitrogen base is added to the vapours leaving the reaction zone.  In examples: (1) acetic acid containing 0,3 per cent of triethyl phosphate and 0.3 per cent of pyridine is passed through an electrically-heated carbon tube having an iron mantle; (2) the triethyl phosphate is replaced by 0,05 per cent of phosphorus, and the pyridine is led in after the reaction zone; (3) in the first example, the pyridine is replaced by 0,1 per cent of ammonia, led in after the reaction zone.  Specification 317,907, [Class 2 (iii)], is referred to.  The Specification as open to inspection under Sect. 91 includes the use of gaseous catalysts, preferably phosphorus compounds, in conjunction with the volatile nitrogen compound and contains an example in which 0,1 per cent of phosphoric acid vapour and 0,3 per cent of pyridine are employed. This subject-matter does not appear in the Specification as accepted.
Patent GB-379563-A (GB)
Title: Improvements in silencers for internal combustion engines
IPC: F01N1/24
Filed: 1931-11-16
Abstract: 379,563. Induction silencers. FAIRWEATHER, W. C., 65, Chancery Lane, London.-(Auto-Product Ges.; 17, Katharinenstrasse, Halensee, Berlin.) Nov. 16,1931, No. 31638. [Class 7 (ii).] A silencer for induction noises consists of a casing f enclosing a number of perforated tubes l<1> . . l<3> connected to conical headers m<1>, m<2> to which are secured the parts c<1>, c<2> of the air supply pipe to the carburetter. The tubes are covered or lined with gauze-like material and are entirely surrounded by cellular material which fills the casing. Three tubes are shown, but in a modification five are employed, the tubes in each case being arranged in a circle about the axis of the casing.
Patent GB-1112253-A (GB)
Title: Stabilized controlled rectifier circuit
IPC: H02M7/155
Filed: 1965-07-24
Abstract: 1,112,253. Semi-conductor pulse circuits. METALECTRIC FURNACES Ltd. (Inductotherm Corporation). 24 July, 1965, No. 31681/65. Heading H3T. [Also in Division H2] In a thyristor circuit for providing pulses to an inductive load, 22<SP>1</SP> Fig. 2, turn off of the thyristor at the termination of a pulse is ensured by means of a circuit providing a small reverse bias voltage V s . The bias may be derived from a source 34<SP>1</SP>, a capacitor, Fig. 4 (not shown) or a rectifier circuit, Fig. 5 (not shown). A number of circuits may be connected to a common bias, Fig. 3 (not shown). The input to the thyristor circuit may be obtained from a rectifier, or in a polyphase circuit, Fig. 6. The thyristors 84, 86, 88 may also act as rectifiers. In this case, the bias is derived from diodes 112, 114, 116.
Patent GB-1166789-A (GB)
Title: Means for Producing Unidirectional Flow of Molten Metal in a Container
IPC: G06V10/12
Filed: 1968-07-03
Abstract: 1,166,789. Electromagnetic mixing apparatus. AJAX MAGNETHERMIC CORP. 3 July, 1968 [15 Feb., 1968], No. 31749/68. Heading B1C. [Also in Divisions H2 and H5] A coreless electric induction furnace 10 has a heating and stirring coil of two or more sections as at A, B, the section A being connected to a single phase power supply 11 and section B to a capacitance 14, 14' and not to the power supply; the capacitance is turnable in resonance with the power supply frequency so that section B has a 90 phase lag, producing a travelling magnetic field causing unidirectional flow of the outer parts of the melt (as shown, upward) with a return flow in the centre. Capacitance 12, 12' is provided to improve the power factor. The arrangement may be converted to one more suitable for melting by closing switch 17 when sections A, B are connected in parallel to the power supply. The capacitors 12, 12', 14, 14' may be adjustable manually or automatically; taps may be provided on the coil or a transformer interposed between coil and capacitors. In a modification (Fig. 3, not shown) the coil has four sections A, B, C, D, the power supply being connected to A and C, and the capacitance to B and D in series or parallel. There is then a phase lag of 90 between each successive coil section. In a further modification (Fig. 4, not shown) the direction of flow of the melt may be reversed by providing switches (30, 40) to connect sections A, C to the capacitance and sections B, D to the power supply. For melting the sections are connected in two groups A, C and B, D in parallel to the power supply, the sections in each group being in series and switches (31, 32) being provided to reverse the connections to C, D so that all four sections are in phase. The invention may be applied to the pumping of molten metal in a pipe-line, the metal in the centre of the pipe being carried along with the flow at the periphery.
Patent GB-1010881-A (GB)
Title: Improvements in or relating to incinerators or the like
Inventor: SCHOLER FELIX
IPC: F23G5/00
Filed: 1964-08-05
Abstract: 1,010,881. Refuse incinerators; loading shoots. GOODRID INCINERATOR CO. PTY. Ltd. Aug. 5, 1964, No. 31793/64. Heading F4B. A refuse incinerator is provided with a loading shoot 11, receiving material direct from a vehicle or conveyer, and having a sloping front wall and vertical rear wall with two openings 18, 19 therein, closed by counterweighted sliding doors 20, 21, each door being provided with two damper controlled frusto-conical air inlets 22; the openings each communicating with a firing chamber. The sloping front wall of the shoot is provided with counter-balanced drop-down hinged doors 24 aligned with and providing access to each opening in the front wall of the shoot. The shoot may be divided into two by a partition 15 to apportion the load between the firing chambers. Each air inlet 22 is mounted with the largest diameter vertical, the outlet being either horizontal or, as shown, angularly disposed to the horizontal axis of said diameter, and capable of rotation about said axis by means of a ring gear and pinion. Air inlets may also be provided in the side walls of the incinerator and below the grates of the firing chambers. In operation, refuse is discharged into the loading shoot and fed, through the openings 18, 19, into the firing chambers where it is fired; the openings are closed and the dampers on the air inlets are adjusted. The incinerator, once fired, becomes self-stoking since the streams of combustion air burn a channel through the load, causing the upper material to fall into the burning zone. Water spray nozzles may be provided above the air inlets for the complete combustion of carbonaceous materials.
Patent GB-324145-A (GB)
Title: Improvements in or relating to furnace bars for forced draught furnaces
IPC: F23H3/02
Filed: 1928-11-01
Abstract: 324,145. Col1ins, G. H. Nov. 1, 1928. Firebars.-A trough bar through which air or steam is passed comprises separate side walls 9, 10 movable about longitudinal axes to produce an opening in the bottom of the trough. The walls 9, 10 are inwardly curved at 13, 14 and have trunnions 11, 12 at the ends accommodated in opposite semicircular depressions in the bridge plate 3 and dead plate 8. A transverse shaft 15 below the bars carries arms 18 with ball-shaped ends 19 moving between and engaging the outer faces of a pair of side walls of adjacent troughs so that when the arms are in a vertical pisition, Fig. 1, the troughs are closed at the bottom and by lowering the arms, Fig. 2, they are opened for the removal of ash and to give maximum air flow. Plates 20 close the troughs at the back of the furnace and at the front of each .trough is a nozzle 22 carried from the dead-plate 8 for the introduction of the blast for forced draught. Firebars 25 are supported upon the upper edges of the walls 9, 10 and at the ends of the troughs the bars 25 extend on to the stepped parts of the bridge-plate end dead-plate. The upper outer edges of the side walls may be shaped to leave spaces 26 through which ash may pass. As shown the walls open by gravity, but they may be positively opened by lugs engaging the arms 18, and further projections may be provided on the side walls whereby the arms 18 shake the walls during opening to assist the removal of ash. The side walls 9, 10 may be suspended by pins and lugs from parallel side members.
Patent GB-988122-A (GB)
Title: Improvements in or relating to explosives
IPC: C06B21/00
Filed: 1963-08-13
Abstract: A normally crystalline high explosive is converted to a finely-divided particulate form by contacting immediately after formation, a turbulent mixture of a solution of the explosive in an inert solvent (8 p.b.w.) and of an inert miscible non-solvent (3-7 p.b.w.), with additional non-solvent such that the total non-solvent is at least 2.2 x the solvent.  Specified explosives are pentaerythritol tetranitrate, nitromannite, cyclotrimethylenetrinitramine, cyclotetramethylenetetranitramine, tetranitromethylaniline ethylene dinitramine and trinitrotoluene.ALSO:A normally crystalline high explosive is converted to a finely-divided particulate form by contacting immediately after formation, a turbulent mixture of a solution of the explosive in an inert solvent (8 p.b.w.) and of an inert miscible non-solvent (3-7 p.b.w.), with additional non-solvent such that the total non-solvent is at least 2.2 x the solvent.  Specified explosives are pentaerythritol tetranitrate nitromannite, cyclotrimethylenetrinitramine, cyclotetramethyltetranitramine, tetranitrome thylaniline, ethylenedinitramine and trinitrotoluene.
Patent GB-491283-A (GB)
Title: Improvements in cut-off mechanism for upsetting or like machines
IPC: B21K27/06
Filed: 1937-11-19
Abstract: 491,283. Forging. WILCOX, R. L., and WATERBURY FARREL FOUNDRY & MACHINE CO. Nov. 19, 1937, No. 31912. [Class 83 (iv)] The means employed for reciprocation of the shearing slide of an upsetting or like machine actuated from a cam is modified by introducing a rocker arm or arms in the transmission system. As shown, the actuating cam 21 is attached as by a screw 22 to a plate 20, adjustably fixed by bolts 24 to a toothed wheel 18, gearing with a corresponding wheel 17 on the main shaft 16. A pivoted spring pressed lever 28 carries a roller 30 engaging the cam 21 and a roller 31 engaging a return cam 23. The lever has a ball-and-socket connection to a rod 42 connected by a shear pin 43 to a sleeve 44 connected in turn by ball-and-socket to a bellcrank 36 pivoted at 37. The bell-crank is attached to the shearing slide 15. A stud 53 engaging a slot in the sleeve 44 prevents disengagement if the relief pin 43 is sheared. Studs 45, 48 with corresponding lock nuts serve for adjustment.
Patent GB-491235-A (GB)
Title: Improvements in and relating to typewriting machines
IPC: B41J1/32
Filed: 1936-11-23
Abstract: 491,235. Typewriters. DESTREE, J. Nov. 23, 1936, No. 32049. Void. Convention date, Nov. 22, 1935. Drawings to Specification. [Class 100 (iv)] Type-wheel actions.-A swinging type-wheel machine is provided with two or more typewheels which are separately mounted and actuated, the arrangement enabling the usual case-shift mechanism to be omitted. The axes of the type-wheels may be inclined to the axis of the platen or parallel thereto, and in the latter case provision may be made for moving the platen axially to cause the selected type-wheel to strike in correct position.
Patent GB-300127-A (GB)
Title: Improvements in pneumatic closing devices for car doors
IPC: E05F15/56
Filed: 1928-11-03
Abstract: 300,127. Chemin de Fer Electrique Souterrain Nord-Sud de Paris. Nov. 5, 1927, [Convention date]. Operating doors pneumatically; checks.- In pneumatic operating mechanism for vehicle doors which are checked during the closing movement by making the operating cylinder fluid-tight at both ends so that a fluid pressure is produced on the door side of the operating piston to oppose the closing movement, this fluid under pressure is allowed to escape slowly through a hollow piston rod having a port which passes out of the cylinder towards the end of the stroke. The piston 1 is provided with a cup-leather 2 on the side opposite to the inlet 15 for compressed air to the door-closing cylinder 8, the piston rod 3 being connected at its other end to the door. As the door is being closed, the air in the cylinder on the door side of the piston escapes through a port 16 in the hollow piston rod 2 until the piston is moved so far to the right that the port 16 is beyond the stuffing-box 5. During the remainder of the closing movement of the door the air on the exhaust side of the piston escapes only through passages 13, 17 in the cylinder head 4 leading to and from a valve 6, Figs. 2 and 3. The escape of the air through the valve 6 is adjustable by means of a screwed member 11. The valve 7 on the inlet side of the cylinder is similar to the valve 6.
Patent GB-887849-A (GB)
Title: Improvements relating to power transmissions for motor vehicles
Inventor: ISSIGONIS ALEXANDER ARNOLD
IPC: B60K17/30
Filed: 1959-09-22
Abstract: 887,849. Motor vehicle driving gear. MORRIS MOTORS Ltd. Nov. 9, 1960 [Sept. 22, 1959], No. 32177/59. Classes 79(2) and 79(3). In a vehicle; in which the front wheels 5 are driven through universally-jointed axle shafts 6 from a power unit disposed at the front of the vehicle and comprising an engine 1, change speed gear 2 and differential 3, provision is made for selectively coupling the output member of the change speed gear to a second differential gear 19 through which the rear wheels 20 may also be driven. A crown wheel 10 fixed to the cage of differential 3 drives a rearwardly extending shaft 12 through a pinion 11. The rearwardly extending propeller shaft 18 is coupled to a shaft 14 to which is splined in sliding engagement a dog clutch element 16 which may be brought into engagement with a flange 17 on the shaft 12 by a control lever (not shown). The front wheel drive shafts incorporate rubberised Hooke type couplings 7, sliding joints 8 and constant velocity universal joints 9. Specification 808,807 is referred to.
Patent GB-342253-A (GB)
Title: Improvements in or relating to looms having a stationary weft supply
IPC: D03D47/00
Filed: 1929-10-23
Abstract: 342,253. Shuttleless looms. BRITISH CELANESE, Ltd. and DREYFUS, H., 22, Hanover Square, London, and DICKIE, W. A., of British Celanese, Spondon, near Derby. Oct. 23, 1929, No. 32195. [Classes 142 (ii) and 142 (iii).] The weft is inserted by heads 6 secured to flexible metallic strips 5, which may be secured to the peripheries of oscillating rollers or drums or may be secured by clips 7 to oscillating arms 8. The heads 6 meet at the centre of the shed, the weft inserted in loop form by means .of a hook or eye &c. on one head being transferred to a hook &c. on the other head, so as to be withdrawn thereby, or, as shown, each head may serve either to insert or withdraw the weft and be provided with a fork 26 to engage weft extending from a package 24 to the fabric, and with a hook 27 to receive the weft inserted by the hook on the other head and withdraw it from the shed, so that several wefts may be inserted in succession from the same side for mixing or patterning. Each head has a guard shield 28 and each hook 27 has a tongue 29 to guide the weft from the fork 26 of one head to the hook 27 of the other head. The metallic strips are bent by rollers 9 into curved form outside the loom and rollers 12 guide the strips in straight lines into the shed. The arms 8 mav be secured to shafts driven by toothed quadrants oscillated by cranks. The weft loops may be secured by selvaging means, or be cut, so that single picks are laid in the shed, which may have short ends turned back into subsequent sheds or may be cut flush with the fabric edges. The metallic strips may partake in the lay movements or be guided on the loom frame. Beat-up motions.-The lay may be actuated by grooved cams on the crank shaft to give a quick beat-up dwell, whilst the metallic strips are being inserted and withdrawn.
Patent GB-655047-A (GB)
Title: Improvements in or relating to means for adjusting the reach in spinning or the likeframes
IPC: D01H5/44
Filed: 1947-12-08
Abstract: 655,047. Roller adjusting means for spinning &c. frames. BLACKSTAFF FLAX SPINNING & WEAVING CO., Ltd., GILLESPIE, J. H., and TELFORD, S. Dec. 8, 1947. No. 32274. [Classes 120(ii) and 120(iii)] Means for adjusting the reach in a spinning &c. frame having feed rollers on a long shaft supported at spaced intervals by bearings which are movable in stands or brackets spaced along the frame, comprises an actuating shaft 1 .extending along the frame, a manually actuable reduction gear for rotating the shaft and a connection between the shaft 1 and each bush or bearing 14 of the feed roller shaft 15 comprising a pinion 20 on the shaft and a toothed rack 19 on a slide 16 which is slidably mounted on the stand 4 and carries the bearing 14, whereby actuation of said gear causes simultaneous movement of each bush or bearing in its stand. Each slide 16 may have a dovetail shaped recess which slidably embraces a similarly shaped guide on the stand 4 and may have a toothed rack on each side of said recess engaging pinions on the actuating shaft 1. The reduction gear may comprise a wormwheel mounted on the shaft 1 and a worm 9 keyed to a vertical shaft 10 rotatable in bracket 25, the lower end of the shaft 10 being of square section for actuation by a spanner.
Patent GB-632581-A (GB)
Title: Weft cutting and removing mechanism for automatic weft replenishing looms
IPC: D03D49/70
Filed: 1946-10-30
Abstract: 632,581. Cutting wefts in automatic bobbin changing looms. CROMPTON & KNOWLES LOOM WORKS: Oct. 30, 1946, No. 32287. Convention date, May 4. [Class 142 (iii)] The thread ends from the spent and fresh bobbins are cut by selvedge cutters and by cutters on the shuttle feeler 28 and are removed by a suction head 50 mounted on the slay. When bobbin changing is initiated, the shuttle feeler is moved rearwardly as usual, which movement opens cutting and clamping jaws 45, 46 linked to a fixed point 70 ; as the slay beats up, it pushes the shuttle feeler forwards, thereby closing the jaws, so that the jaw 45 cuts the weft between the shuttle and the selvedge and the jaw 46 clamps the piece leading to the selvedge against the side of a fixed jaw 34. On the first pick after bobbin changing, the fresh weft comes in front of a hook 60 on the slay and, at the next beat up, is pushed over a hook 61 on the shuttle feeler into a notch 64 ; this piece of weft thus extends from the selvedge, through the notch 64, to an anchorage on the magazine. Several picks later, the taking up of the fabric brings the two pieces of weft into range of the selvedge cutter, which either cuts both pieces together or cuts the spent weft before the fresh weft. In either case. the fresh weft (which passes through the notch 64 at the top of the shuttle feeler) cannot prevent the spent weft (which is clamped at the bottom of the feeler) from hanging freely over the path of the suction head 50, into which the lower ends of both wefts are drawn. The two pieces of weft remain in this condition until the next bobbin changing operation when, as the shuttle feeler moves rearwardly, the clamp 34, 46 opens, releasing the weft held by it, and a blade 62 cuts the weft in the notch 64 ; both pieces of weft are then completely removed by the suction head 50.
Patent GB-618192-A (GB)
Title: Improvements in valve spring lifters
IPC: B25B27/26
Filed: 1946-10-31
Abstract: 618,192. Valve-spring compressors. CULLEN, C. H., and KETTLE, A. J. Oct. 31, 1946, No. 32378. [Class 61 (ii)] A valve spring lifter comprises a channel section body 1 and two L-shaped arms 3, 9, the former of which carries a valve head engaging bearer 4 on a stem 5 adjustably secured in the arm 3 by a bolt 7 and the other arm 9 has an interchangeable foot 10 with seating 13 to engage the valve spring retaining washer. The lower jaw arm is adjustable in the body 1 by means of a bolt 14 engaging one of a series of holes 15 in the part 8 and in the operation of the device the upper jaw arm is actuated by a pressure screw 17 working in a lug 18 on the body.