baber/WOPTO huggingface dataset:
Patent GB-1158367-A (GB)
Title: Improvements in or relating to Automatic Speed Control Systems for Electric Motors
IPC: H02P7/288
Filed: 1967-11-23
Abstract: 1,158,367. Electric motors. RETOBOBINA HANDELSANSALT. 23 Nov., 1967 [24 Nov., 1966], No. 53352/67. Heading H2A. [Also in Division G3] A D.C. motor 8 has one of its commutator segments connected to a slip-ring located above the commutator and engaging a third brush 7 so that the frequency of an alternating voltage which is developed across terminals 9, 91, is proportional to the speed of the motor. This voltage is applied to capacitors 14, diodes 15 and filter 17 to provide a direct control voltage across terminals 16 associated with transistor 18. If the motor speed tends to decrease, point a becomes more negative so that transistor 19 passes more current to restore the speed to a set value. In another arrangement, one of the commutator segments is elongated and its free end is bent so that the contact position with the third brush lies on the axis of the motor shaft. The alternating voltage developed across the terminals 9, 91 may be applied to a frequency comparator which provides a control signal for regulation in the event of deviations of the motor speed.
Patent GB-1402337-A (GB)
Title: Brake actuators
IPC: F16D65/22
Filed: 1972-11-18
Abstract: 1402337 Shoe-drum-brake wedge actuators GIRLING Ltd 9 Nov 1973 [18 Nov 1972] 53405/72 Addition to 1255141 Heading F2E The Specification of the parent Specification 1,255,141 describes and claims an internal shoe drum brake actuator comprising a housing 10 formed with an internal chamber 16 and a pair of aligned bores 12, 14, opening from opposite sides of the chamber, a tappet 18 or 20 in each bore, the inner end of each tappet 18 or 20 being slotted and having mounted in its slot a roller 22 of greater diameter than the tappet, a wedge member 26 displaceable between the inner ends of the tappets and, in operation, bearing on the rollers, and a slot 30 in the housing 10 at the inner end of each bore 12 or 14 to accommodate the spreading movement of the rollers 22 resulting from a brake-actuating displacement of the wedge member 26. The present invention is characterized by one or both of the following features: (a) the wedge member 26 is restrained by the tappets from movement relative to the rollers in a direction generally parallel to their axes; (b) each of the sides of the housing intersected by the roller axes has a single access opening at or adjacent to the centre of the side (to permit attachment of the rollers to the tappets). As shown, the sides forming the slot of each tappet are extended as at 36 beyond the roller to flank and guide the wedge member 26; thus the slotted end of each tappet receives both the wedge member 26 and the respective roller 22. Alternatively, each tappet may have a projecting portion on one side only of its slot and extending over the full width of the tappet, the projecting portions of the two tappets projecting across opposite sides of the wedge member. Access opening 44, Fig. 2, (which is a vertical median section on a reduced scale), is for the introduction of each pin 24, in turn, on which a roller is to be mounted, while smaller opening 42, Figs. 1, 2, is for introduction of a drift to drive out pins 24 on dismantling.
Patent GB-1286090-A (GB)
Title: Motor vehicle gear changing and synchronising mechanism
IPC: F16D23/06
Filed: 1969-11-03
Abstract: 1286090 Positive clutches VOLKSWAGENWERKAG 3 Nov 1969 [10 Dec 1968] 53716/69 Heading F2C In a friction synchronized positive clutch wherein an axially slidable clutch sleeve 1 is splined to a hub 5, an annular spring 14 located in a recess 11 intersecting the splines 2 of the sleeve 1 is engageable with radially projecting ends 16 of the splines 3 on the hub 5 to limit axial movement of the clutch sleeve 1. The spring 14 may be made of wire having a circular or square cross-section.
Patent GB-1381559-A (GB)
Title: Device for feeding a plurality of cigarette machines with cut tobacco
Inventor: QUESTER KARL WILHELM
IPC: A24C5/39
Filed: 1972-11-24
Abstract: 1381559 Feeding tobacco WILH QUESTER 24 Nov 1972 [25 Jan 1972] 54311/72 Heading A2C [Also in Division B8] In a device for feeding tobacco to a plurality of cigarette machines, including a V-shaped circular channel 3 containing a loose mass of cut tobacco 20 from which batches are fed to storage hoppers .7 for individual cigarette machines, the channel 3 is either rotated or reciprocated about its central axis 13 and is automatically fed with tobacco from a hopper 18 by a conveyer 9, which is rotated about the axis 13, whenever the detected level of tobacco 20 in any part of the channel 3 falls below a pre-set value. A flap controlled opening 6, in the outer circumferential wall 5 of the channel 3, is provided above each of the (e.g. sixteen) storage hoppers 7, to supply tobacco when called for by a particular cigarette machine. During supply of the tobacco to a hopper 7, the continuous rotation of the conveyer 9 may be stopped above the particular hopper 7 to augment the feed from the channel 3.
Patent GB-1081910-A (GB)
Title: Apparatus for steaming running lengths of yarn
IPC: D02G1/20
Filed: 1965-12-23
Abstract: Apparatus for steaming running lengths of yarn comprises an elongated steaming chamber having steam inlet and outlet means at opposite sides, the steam passing substantially transverse to the direction of yarn travel.  In a preferred embodiment, Figs. 1-3 (not shown), the steam inlet means comprises an elongated foraminous plate 16 which communicates with an inner chamber 6; the steam outlet means comprises a threading slot 18 for the yarn. The steam is supplied to outer chambers 4 which communicate with the chamber 6 through metering orifices 8, the steam being distributed throughout the chamber 6 by impinging on a curved screen 12 within the chamber 6. The distributing means may alternatively be in the form of a baffle plate made, for example, of aluminium.  In an alternative embodiment, Figs. 4-6 (not shown), a steam supply pipe 104 extends the length of the apparatus and communicates with outer chambers 106.  The chambers 106 supply steam via orifice 114 to a reheat chamber 112 which surrounds the supply pipe 104.  The steam then passes through the inlet means to the steaming chamber.  Two or more supply pipes surrounded by a reheat chamber may be provided.
Patent GB-1202890-A (GB)
Title: Pressure equalizer for vulcanizable elastomers for three layer extrusion
IPC: B29C48/06
Filed: 1967-12-01
Abstract: 1,202,890. Vulcanizing extruded coatings. GENERAL CABLE CORP. 1 Dec., 1967 [30 Dec., 1966], No. 54721/67. Heading B5A. Apparatus for extrusion coating on electric cable and vulcanizing the elastomer coating comprises an extrusion coating die in which the insulation is applied, another die for applying a coating to the insulation, a high-pressure steam vulcanizing chamber immediately beyond the second die and a chamber through which the cable passes, sealed to the two dies in which a gas pressure from 0-20 p.s.i. less than the steam pressure is maintained to prevent the steam pressure forcing insulation back through the second die. As shown, the wire 24<SP>1</SP>is coated in a first die 92 with a thin layer (15-30 mils) of insulation 5, 4, a thick insulation layer 62 (100-650 mils) is applied in the second die 52 and a further thin coating is applied in the third die 12. A pressure vulcanizing chamber 40 abuts the outlet of the third die 12 and is supplied with steam from inlet 90. The pressure-equalizing chamber 70 sealably abuts the dies 12 and 52 and is supplied with a gas inert to the elastomer (e.g. dry air or nitrogen) from a gas source 82. Regulator 84 continuously monitors the steam pressure and supplies gas to the equalizing chamber at the desired pressure.
Patent GB-1203757-A (GB)
Title: Heterocyclic compounds
Inventor: BALDOCK TERENCE WILLIAM
IPC: G03C1/34
Filed: 1966-12-08
Abstract: 1,203,757. Stabilizers for photographic silver halide emulsions. MINNESOTA MINING & MFG. CO. Dec.7, 1967, [Dec.8, 1966], No.55114/66. Heading G2C. [Also in Division C2] Silver halide photographic emulsions are stabilized by 4-hydroxy-5-iodo-1:3:3a:7- tetra-azaindenes by addition of the compounds, either to the emulsion as a whole, or to a particular layer of the emulsion, as this then stabilizes the adjacent layers of the emulsion by diffusion. Examples are given of the inclusion of the stabilizing compounds in silver iodebromide photographic emulsions.
Patent GB-1207187-A (GB)
Title: Method of determining variable process coefficients of a mathematical model of an industrial process
IPC: G05B13/04
Filed: 1967-12-06
Abstract: 1,207,187. Testing of controlled processes. INTERNATIONAL BUSINESS MACHINES CORP. Dec.6, 1967 [Dec. 7, 1966], No. 55513/67. Heading G3R. The computation of gain, natural frequency and delay of a controlled process 10, which may be paper-making, is effected at 26 by a digital or analogue computer which first inserts, into a differentiated version of an equation representing the process, actual values of process input and output variation produced by a signal generator  29 periodically perturbating the process through a controller 24. The computation involves use of a residual function and the method of least squares. An integrated version of the differentiated equation is then utilized to calculate second values of gain and natural frequency assuming the delay to be that calculated from the differentiated equation. The best values of gain and natural frequency are finally selected by inserting the differently computed values in the equation representing the  process and comparing computed and actual process outputs. The final values of gain, natural frequency and delay are then employed to produce at 28, signals K 1  -K m  adjusting the gains of sections of controller 24 which compare the magnitudes of process variables 18, 20, 22 with desired values so that any differences are eliminated by control of appropriate process variables through lines  12, 14, 16.
Patent GB-1175387-A (GB)
Title: Packaging Assembly for Folding Film about Articles.
IPC: B65B9/06
Filed: 1967-12-08
Abstract: 1,175,387. Wrapping groups of articles. AUTOMATIC SPRINKLER CORP. OF AMERICA. 8 Dec., 1967 [3 Jan., 1967], No. 55867/67. Heading B8C. Apparatus for forming a continuous film envelope around rows of objects, e.g. cans, advanced into the apparatus, comprises a collar formed from a trapezium-shaped guide plate and a top plate, beneath and parallel to the guide plate, and forming, with side plates and a pair of bottom plates, a passage through which the objects can pass, together with means for retaining the moving film and folding it around the leading edges of the plates. Rows of cans 16 are fed into the apparatus 10 which folds about them a heat-shrinkable plastics film 14. The film first travels horizontally, from a roller 52a, along the top face of the guide plate 20 and then folds around the leading edge 20a of this plate, the central part 56 of the film moving vertically downwards, Fig. 3, and the marginal parts moving inwardly under the plate 20, over folding bars 42, and then down the outer faces of side plates 24. The central part of the film next folds under the leading edge of a top plate 28 and moves along the lower face of this plate in the direction 70 to form the upper part of envelope 14a, whilst the lateral parts of the film fold around angled edges 26 of the side plates 24 to form the sides of the envelope, and also around angled edges 26a, Fig. 2, of bottom plates 30 to form overlapping base flaps of the envelope, these flaps being subsequently sealed together at 77, Fig. 3 (sealing not described). In order to facilitate initial feeding of the film, the apparatus can be raised, e.g. by cylinders 75, Fig. 1, and the bottom plates 30 are pivotable downwardly, Fig. 5 (not shown). The folding bars 42 can be swung horizontally about pins 44, Fig. 2, and are secured in their operative position by a cross-piece 62 connecting their ends. The film is drawn continuously through the apparatus by devices (not shown) on endless chains 100 which engage the can and film assembly. Certain leading edges of the plates in the apparatus are at angles of substantially 45 degrees to the direction of article movement, but may differ slightly from this value to give better film flow. The envelope 14a is subsequently cut transversely at intervals and heat-shrunk to produce individual packages each containing for example, six cans.
Patent GB-1371203-A (GB)
Title: Control mechanism for a liquid dispensing nozzle or the like
IPC: B67D7/54
Filed: 1971-08-27
Abstract: 1371203 Valves DOVER CORP 27 Aug 1971. [31 Aug 1970] 56000/73 Divided out of 1371202 Heading F2V The disclosure corresponds with that of the parent but the claims relate to a control mechanism for terminating flow to a space in response to rising level or overpressure in the space.
Patent GB-1247922-A (GB)
Title: Improvements in and relating to developing solutions and to methods and apparatus for making same
IPC: G03G9/12
Filed: 1968-11-27
Abstract: 1,247,922. Electro-photographic liquid developers. RICOH K. K. Nov. 27, 1968 [Dec. 5, 1967], No.56177/68. Heading G2H. A liquid electro-photographic developer comprising charged toner particles in an insulating carrier liquid is made by electrostatically charging the particles suspended in air or in the carrier liquid by passing all of the particles through an electrode energized to impart a charge of the same polarity to all the particles, and then mixing them in a quantity of the carrier liquid in a liquid chamber. The invention includes apparatus in which particles suspended in air are blown Fig. 1 or sucked Fig. 2 to pass through an electrode nozzle into carrier liquid or particles already suspended in carrier liquid may be withdrawn from a vessel and returned thereto after passage through an electrode Figs.3 and 4. The latter apparatus may form part of an electro-photographic development apparatus Fig. 7.
Patent GB-1410958-A (GB)
Title: Shot-gun having a cocking and ejection mechanism
IPC: F41A15/06
Filed: 1972-12-07
Abstract: 1410958 Shotgun FABRIQUE NATIONALE HERSTAL SA 7 Dec 1972 [14 Jan 1972] 56580/72 Heading F3C A double-barrel shotgun comprises barrels 1, 2, Fig. 1, a forestock 3 and a gun lever 4 which is pivotally mounted to the gun at 6, each barrel 1 or 2 having a percussion and ejection device. The latter has a cocking lever 7 pivoted at 8 on the forestock 3, an end 9 of the lever 7 being profiled to co-operate with a chamfered end 10 of an axially movable cocking rod 11 which is supported by the gun lever 4. The other end of the rod 11 is urged by a spring 12 against a shoulder 13 of a percussion hammer 14 which is pivoted at 15 and is moved towards an anvil 16 by a pin 17 urged by a spring 18. The hammer 14 is maintained in its cocked position by a tumbler 19 which is released by the operation of a trigger 20. A portion 21, Fig. 3, of the lever 7 engages an ejection tumbler 22 which is hinged, 23, to the forestock 3 and is urged by a spring 24. An ejection hammer 25 is hinged at 26 to the forestock 3, has a tip 27 engageable with the tumbler 22, has a nose 28 which is located adjacent a shoulder 29 of a ram-rod 30, Fig. 1, the latter being connected to an extractor 31, and is urged by a spring 33, via a pin 32. The shoulder 29 has an arm 34 received between protuberances 35, 36, Fig. 3, of the gun lever 4. The gun is opened by a key 37. After firing, the percussion hammer 14, Fig. 2, abuts the anvil 16, having moved the rod 11 so that its end 10 Fig. 3, engages the end 9 of the cocking lever 7. When the gun is being opened, the relative angular movement of the forestock 3 and the gun lever 4 causes the retraction of the cocking- rod 11, the cocking of the hammer 14 by the end 9 of the cocking lever 7, the portion 21 of the lever 7 to move the tumbler 22 against the urging of the spring 24, and the shoulder 35 of the gun lever 4 to move the arm 31 and partially extract cases 38, 39 from the gun. When the gun is fully opened, the portion 21, Fig. 6, of the lever 7 again moves the tumbler 22 and thus releases the tip 27 of the ejection hammer 25 which is then urged by the spring 33, via the pin 32. The nose 28 hits the ramrod shoulder 29 and the latter causes the extractor 31 to eject empty cases 38, 39. The movement of the extractor 31 is then arrested by the protuberance 36 being abutted by the arm 34 of the shoulder 29. When the gun is being closed, the protuberance 36 moves the arm 34 to cause the extractor 31 to be retracted and the hammer 25 to return to its initial position. The tumbler 22 is returned by the spring 24 and the cocking lever 7 resumes the pre-firing position as shown in Fig. 1. The release of the ejection hammer 25 can be effected when the gun lever 4, Fig. 5, has moved a distance d, thus enabling the empty case 39 to be ejected clear of the lever 4. The timing of the release of the ejection hammer 25 is effected by a screw 40, carried by the tumbler 22, which adjusts the cocking rod 11, via the cocking rod 7.
Patent GB-1496484-A (GB)
Title: Bearing structures
IPC: F16N7/36
Filed: 1974-10-31
Abstract: 1496484 Lubricating TURNER MFG CO Ltd 31 Oct 1974 [7 Dec 1973] 56953/73 Heading F2A A bearing assembly comprises a shaft 13 rotatably mounted with respect to a member 11 by means of a tapered roller bearing 19, there being a screw-type lubricant feed means 36 on the shaft 13 occupying a bore 35 in the member 11 and arranged to deliver lubricant to the radially innermost ends of the bearing rollers. The assembly may be part of a gear-box. The member 11 is itself rotatably supported with respect to the gear-box casing 10 by means of a bearing 16-18. Lubricant is gravity fed to the feed means from a reservoir 27 attached to the casing, by way of radial bores 34 in the member 11. Some of the lubricant finds its way through the bearing 16-18, but the flow therethrough may be restricted by suitable means.
Patent GB-1445015-A (GB)
Title: Gas turbine engines
IPC: F02C3/04
Filed: 1973-12-11
Abstract: 1445015 Gas turbine engines - power turbine modules GENERAL ELECTRIC CO 11 Dec 1973 [26 Dec 1972] 57326/73 Headings F1G and F1J The invention relates to a gas turbine engine of the kind having a separate power turbine, the drive shaft of the power turbine extending forwardly through the engine and engaging at its forward end with a power take-off shaft, the power turbine being in the form of a module which is releasable and removable from the remainder of the engine in an axially rearward direction. The engine shown comprises a compressor 16, combustion equipment 28, an H.P. turbine 36 connected to drive the compressor through hollow shaft 38, and an L.P. power turbine 40 connected to a hollow drive-shaft 42 which extends forwardly through the engine, through the hollow shaft 38, being connected at its forward end to a power take-off shaft 43 through a spline connection 164. The power take-off shaft is in turn connected at its forward end to an output shaft 171 through a spline connection 173. The output shaft may be connected to drive a helicopter lift rotor, a ducted fan or an airscrew. The engine comprises a front frame 45 within which the power take-off shaft is rotatably mounted by means of a roller bearing 166, also by means of a double-row ball thrust bearing 174, 180. The frame 45 also carries a bearing 48 which supports the forward end of the compressor/turbine shaft. The engine comprises also a rear frame 47 which carries a roller bearing 152 which supports the rearward end of the drive-shaft 42; the rearward end of the shaft is also supported by means of a ball thrust bearing 158. The rearward end of the compressor/turbine shaft 38 is supported in a roller bearing 50 carried by engine stator structure (46). The power turbine comprises an outer stator casing 100 which carries the power turbine inlet nozzle guide vane assembly 120 and inter-stage guide vane assembly 106, also shroud structure 96, 98 for the rotor blade assemblies 84, 88, the stator casing 100 being secured to the engine stator casing 12 by means of releasable bolts 103. By releasing the bolts 103, the power turbine module including the driveshaft 42 may be removed from the engine in an axially rearward direction. The spline connections 164 and 173 are lubricated by means of an oil supply nozzle 186 which supplies oil through inclined openings 188 in the power take-off shaft 43, the oil passing through the splines thence through openings 193, 193' in dams 192, 192'. The output torque is measured by means of a meter comprising a tube 163 secured within the hollow drive-shaft 42.
Patent GB-1373548-A (GB)
Title: Anti-hypertensive 6-substituted 3-hydrazino-pyridazines and their preparation
IPC: C07D237/20
Filed: 1971-12-13
Abstract: 1373548 6-Substituted-3-hydrazino pyridazines ISF SpA 13 Dec 1971 [15 Dec 1970] 57858/71 Heading C2C Novel compounds of Formula I wherein R is methyl, ethyl, propyl, 2-hydroxyethyl or 2-hydroxypropyl and not toxic acid addition salts thereof are prepared by acid hydrolysis of a hydrazone of formula wherein R is an organic radical such that the resulting aldehyde may be distilled off with the acid and that the hydrazone is soluble in organic solvents.  The intermediates of Formula IV above are obtained from compounds of Formula III (which are described and claimed in Specification 1,373,549) by reaction first with hydrazine and then with the aldehyde. Pharmaceutical compositions in conventional forms for oral or parenteral administration and having hypotensive activity comprise an above novel compound and a carrier therefor.
Patent GB-1410014-A (GB)
Title: Gas turbine engine blade
IPC: F01D5/18
Filed: 1971-12-14
Abstract: 1410014 Gas turbine blades ROLLS ROYCE (1971) Ltd 8 Dec 1972 [14 Dec 1971] 58127/71 Heading F1T A hollow gas turbine rotor blade has generally chordwise staggered ribs 18 extending from the blade interior surfaces 16, 17 part-way towards the opposite surface such that cooling air passing generally spanwise through the blade is directed by the ribs alternately towards the opposite surfaces. In modifications Figs. 4, 5 (not shown) ribs 18 are inclined in the same or opposite directions. In a further modification Fig. 6 (not shown) the ribs are of wave shape.
Patent GB-1404359-A (GB)
Title: Method and apparatus for producing a concrete lining in a gallery tunnel or shaft
IPC: E04G11/34
Filed: 1972-12-18
Abstract: 1404359 Method of producing tunnel linings H T WALBROHL 18 Dec 1972 [22 Dec 1971] 58310/72 Heading E1S In a method of producing a tunnel lining 16 in which concrete is fed between an inner shuttering 20 and the soil or an outer shuttering that section of'the concrete which has  sufficiently set to be stable in form is loaded on its inner faces by a pressurised fluid until it can absorb external loadings. The shuttering 20 is of frusto-conical configuration and connected to the cutter mechanism by advancing rams 25, the rear of the shuttering being connected to thrust members 31. Each member 31 has a skin 32 of reinforced rubber re-inforced by steel ribs and encircled by spacers 36, adjacent members 31 being coupled by elastic sealing rings 35. The fluid, which may be compressed gas or a highly viscous liquid, is fed into the space 34 between the members 31 and the concrete by pumping means 42, 41 and the space is sealed by a seal 37, 38, 39. For modified details of seals, shuttering, forming member and joints the Specification and remaining drawings, (not shown), should be referred to.