baber/WOPTO huggingface dataset:
Patent GB-621607-A (GB)
Title: Improvements in or relating to aircraft propulsion units
IPC: F02C6/02
Filed: 1947-02-04
Abstract: 621,607. Aircraft propulsion. SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES DU SUD-OUEST. Feb. 4, 1947, No. 3342. Convention date, Feb. 5, 1946. [Classes 4 and 114] [Also in Group XXVI] An aircraft propulsion unit comprises a pusher propeller unit driven by one or more engines and an annular reaction jet nozzle fed by the gases from said engine, the nozzle surrounding coaxially the hub of the propeller unit, and each blade root of the propeller unit being insulated from the gaseous jet by a fairing. One or more coupled coaxial pusher propellers 5 are driven by one or more turbines 2 by means of shafting 8, gearing 8a and a reduction gear 6. The engine tail pipes 3 are formed into a single jet pipe 4 which is coaxial with and exhausts rearwards of the propeller hubs 7 through a concentric annular duct formed between a cowling 11 and a hub fairing 12 connected by radial blade root fairings 13 set at an angle to minimize resistance, taking account of the rotary propeller speed and the gas ejection speed. The hubs 7 and the blade roots 5a may be either insulated against the heating effect of the jet or protected against icing effects by passing respectively cooling air or exhaust gases through the flap valve 15 and exhausting the air or gas through gaps 24 between the cowling 11 and the blade roots 5a. For contra-rotating propeller installations the oppositely rotating cowlings 11 and the stationary pipe 4 may be interconnected by stuffing-boxes or labyrinth joints. The pipe 4 may be sub-divided to maintain a high exhaust ejection speed if one engine is stopped. In an alternative arrangement (not shown), additional ducts eject part of the exhaust gases over the upper surface of the flaps to improve the lift properties thereof.
Patent GB-1507271-A (GB)
Title: One-way valve and apparatus for administering a parenteral solution incorporating the same
IPC: A61M39/24
Filed: 1976-01-28
Abstract: 1507271 Valves ABBOTT LABORATORIES 28 Jan 1976 [12 Feb 1975] 03403/76 Heading F2V A one way valve for use in the administration of parenteral solutions has a body 24 with intake and outlet orifices 27, 28 containing a freely movable valve member 25 with a continuous surface 33 facing the intake orifice and projections 35 extending towards the outlet orifice. As shown, the valve 10 is part of a Y junction 44 with a reseal device 40. The valve receives parenteral solution from a container (11), Fig. 1 (not shown), via a drip chamber (12) and delivers the solution to a hypodermic needle (21). If administration of a second solution is desired as an alternative it may be injected through the reseal device when it will effect an upward movement of the valve member to seal off the solution flow from container (11).
Patent GB-1462645-A (GB)
Title: Injection moulding machines
IPC: B29C45/00
Filed: 1974-01-24
Abstract: 1462645 Injection moulding machine control NETSTAL-MASCHINEN AG 24 Jan 1974 [7 Feb 1973] 3426/74 Heading B5A An injection moulding machine for plastics, comprises an hydraulically actuated plasticizing and injection screw 3 in an injection cylinder 2, a programming device influencing the hydraulic pressure via a control device, a device 13 for the continuous measuring of the hydraulic pressure, means 9 and 10 for measuring the velocity of and distance moved by the screw, timing means 17, and a switching device 14 which, when the hydraulic pressure reaches a predetermined value or, should the predetermined value not be reached when the screw has covered a predetermined distance, switches the control of the mould filling from being velocity controlled in screw distance dependent manner over to a pressure controlled after-pressure phase in time dependent manner.
Patent GB-527215-A (GB)
Title: Improvements relating to lathe tool holders
IPC: B23Q16/10
Filed: 1939-02-03
Abstract: 527,215. Turning. WARD & CO., Ltd., H. W., and WILLIAMS, W. T. Feb. 3, 1939, No. 3611. [Class 83 (iii)] A turret tool-holder for a lathe has a base a secured by bolts and T-slots to a slide and recessed to receive the flange g of a post f. The turret k slides in the post under the control of a screw i having a handle j, a collar m for raising the turret, and a collar n for reseating it. Notches p in a plate q secured to the'underside of the turret co-operate with a projection o bolted to the base. A spring detent i co-operates with grooves to indicate the altered angular positions for re-engagement of the parts o, p. In a modification the upper part of the post is threaded for engagement with a handled nut rotatably secured in the turret. In a further modification, cam or like means may slide the turret on the post.
Patent GB-1191753-A (GB)
Title: Method and Apparatus for Separating Contaminants from Fluids
IPC: B43K24/08
Filed: 1968-01-24
Abstract: 1,191,753. Separating water from hydrocarbons. FILTERS Inc. 24 Jan., 1968 [2 Oct.. 1967], No. 3769/68. Heading B1D. Coalesced water droplets are separated from a fluid hydrocarbon by passing the fluid through a screen 42 which retains the droplets and subsequently through a screen 46 whose permeability varies spatially such that its flow resistance produces uniform flow through the entire surface of screen 42. As described, the variable permeability is achieved by providing holes 48 of graded size (i.e. larger nearer the top of screen 46, where the hydrostatic pressure is less); or longitudinal slots (Fig. 4, not shown) of tapering width; or by winding the central tube helically with filter paper (60) of progressively increasing density (Fig. 8, not shown); or by providing a plurality of concentric centre tubes (62) (Fig. 9, not shown) of stepped heights. In Fig. 1; 26 are filter/ coalescea stages in parallel and 30 is the abovedescribed separator stage.
Patent GB-1377091-A (GB)
Title: Electron gun structure
IPC: H01J3/02
Filed: 1972-01-26
Abstract: 1377091 Electron lenses HITACHI Ltd 26 Jan 1972 [5 Feb 1971] 3774/72 Heading H1D The main focusing lens in a cathode-ray tube is formed by the combination of a unipotential lens and a bipotential lens. In Fig. 2 the first three electrodes P1-P3 form the unipotential lens L u  and the third and fourth electrodes P3 and P4 form the bipotential lens L B . Electrodes P1 and P3 are connected together to a high potential source E a  whilst electrodes P2 and P4 may be connected to a common medium potential source E b  or may be connected to separate medium potential sources (Fig. 3, not shown). In modifications (Figs. 4 and 5, not shown) the first two electrodes form the lens L B  and electrodes P2-P4 form the unipotential lens L u .
Patent GB-789922-A (GB)
Title: Improvements in dental impression trays
IPC: A61C9/00
Filed: 1956-02-07
Abstract: 789,922. Dental impression trays. AKT.-GES. FUR FEINMECHANIK VORM. JETTER & SCHEERER. Feb. 7, 1956 [Feb. 7, 1955], No. 3784/56. Class 81 (2). An upper impression tray is formed with a relatively deep outer wall having a recess 2, Fig. 1, for the commissure of the lips, the depth of the wall in the region of the molars being about equal to that in the region of the incisors. The dotted lines indicate the usual form of the walls. Fig. 7 shows a lower tray having an outer wall of the same general form as the upper tray, and an inner wall having parts 10, 10<SP>1</SP> of greater depth than the corresponding parts of the outer wall. Figs. 3 and 11 show upper and lower trays, respectively, for use with jaws having teeth as far as the premolars. The trays are made in sets of twelve.
Patent GB-664438-A (GB)
Title: Improved golf club head
IPC: A63B53/04
Filed: 1949-02-11
Abstract: 664,438. Golf-clubs. MAHMOUD, A. D. Feb. 13, 1950 [Feb. 11, 1949], No. 3817/49. Class 132 (ii). A golf-club head comprises a peripheral frame 20 having a striking face 18 and braced by a strut 21 extending from the back of the face 18 to the rear of the club so that an opening extends through the head at each end from top to bottom. The head may be formed out of the solid, Fig. 2 (not shown), or may be formed of metal strip in which case the strut 21 is narrower at the front than at the back.
Patent GB-1024824-A (GB)
Title: An apparatus for counter current solid-liquid material transfer and a method of using the same
IPC: B01J47/10
Filed: 1963-01-30
Abstract: <PICT:1024824/C6-C7/1> <PICT:1024824/C6-C7/2> Sugar syrups, or waste molasses solutions are purified by being passed through one or more than one ion-exchanger or activated carbon, e.g. animal charcoal, moving in counter-current; fresh ion-exchanger or activated carbon being introduced periodically and used ion-exchanger or activated carbon being continuously discharged, during the purifying operation. The arrangement of two treatment vessels is shown in Figs. 4 and 6.ALSO:<PICT:1024824/C1/1> Liquid is contacted with solid in countercurrent in vessel 1 entering by inlet 1 and leaving by outlet 3.  Fresh solid is introduced from hopper 7 when the flow of liquid is stopped and liquid in the vessel drained through outlet 4.  The solid may be activated carbon or sand particles.  Thus sand may be employed to filter out copper hydroxide particles from copper sulphate solution, the sand being subsequently freed from deposited copper hydroxide by contact with sulphuric acid.
Patent GB-510802-A (GB)
Title: Improvements in or relating to transparent closures and the like
IPC: C09K3/18
Filed: 1938-02-08
Abstract: 510,802. Cellulose derivative and synthetic resin films, eye-pieces, windows &c. DREYFUS, H. Feb. 8, 1938, No. 3947. [Classes 2 (ii) and 2 (iii)] Eye-pieces of respirators or goggles, or windows or windscreens of closed vehicles, aircraft, gun-turrets or other articles liable to be exposed on one side to a warm moist atmosphere and on the other side to a colder atmosphere comprise transparent closures of material obtained by saponifying sheet material of a cellulose organic ester or a polymerised ester of an unsaturated compound so as to provide at least one surface capable of absorbing moisture while maintaining transparency and resistance to the penetration of water and gases in the sheet material as a whole. The closure is arranged with an absorbent surface on the side of the article which in use is exposed to the moist damp atmosphere. The eye-piece discs or other closures may be cut or punched from the sheet material before or after the saponification treatment. The sheet material may be made by extrusion, casting, or blocking and slicing methods. It may contain one or more plasticisers which are not readily removable by the saponifying bath and which preferably have a slight affinity for water. Dimethyl phthalate, dimethoxyethyl phthalate, dioxyethyl phthalate, ethyl ethoxyethyl phthalate, or ethyl acetanilide may be used as plasticiser. Preferably saponfication is intense at the surface of the material, but does not extend far below the surface. Saponification may be on both sides or confined to one surface by coating the other side with wax. Saponification may be such that the sheet material has an affinity for cotton dyes extending from the surface to a depth of not more than onethousandth of an inch, but it may be deeper in the case of thick sheet material. The saponifying agent may be caustic soda or potash, barium hydroxide, alkali metal carbonate or phosphate, ammonia, guanidine, quaternary ammonium bases, alkylamines, alkylolamines, benzylamines, ethylene diamine, or cyclohexylamine. Agents which repress swelling, e.g., sodium acetate or sulphate, may be added to the saponifying medium, or swelling agents, e.g., dioxane or methanol, may be added. The saponified surface of the sheet material may be subjected to buffing or treatment with a strong jet of water. The sheet material may be made flat, curved, or flexible, according to the desired shape of the closure. The cellulose acetate or other ester is preferably made under conditions such as to avoid degradation of the cellulose molecule and, in the case of acetate, ripening is carried out to acetone solubility or even to a stage where the ester is soluble in acetone diluted to a considerable extent with water. The sheet material may be of cellulose acetate, propionate, propionate-nitrate, or oxyethyl cellulose nitrate, or it may be of polyvinyl acetate, chloride, or acetate-chloride, or of a polyacrylic or polyalkylacrylic ester, e.g., poly- (ethyl acrylate) or poly- (methyl methacrylate). Specification 503,834 is referred to.
Patent GB-627412-A (GB)
Title: Improvements in and relating to frequency modulation radio receivers
IPC: H03J5/24
Filed: 1947-02-11
Abstract: 627,412. Frequency modulation ; radio receiving systems. PHILCO CORPORATION. Feb. 11, 1947, No. 3955. Convention date, Feb. 26, 1946. [Class 40 (v)] Accuracy in the manual tuning of frequencymodulation receivers is ensured by arranging that, when the control knob is grasped by the operator, ambient electric fields established by electric power circuits impose an audible amplitude-modulation on the received carrier wave, the tuning being adjusted to a point where this audible hum is a minimum. As shown, the tuning-knob 19 and spindle 20 turn in a metal sleeve 21 which is connected by a lead 25 to the grid circuit 2 of the radiofrequency amplifier 3 or one of the other highfrequency valves 5, 8. The operator serves as a source 29 of hum or ripple voltage from the A.C. or D.C. supply circuit, and when he grasps the knob 19, the hum voltage amplitudemodulates the incoming wave. If the set is not in accurate tune, the hum is detected in the FM detector 9 and is heard in the audio output 10, but if the tuning is accurately adjusted the balanced detector 9 gives a minimum or zero hum output. The lead 25 is connected to earth by a small condenser 28 in the grid circuit 2. The A.V.C. lead 13 may be connected to the same point in the grid circuit, and resistors 14, 26 may be connected in the respective leads 13; 25. The knob 19 may be of metal or plastic conducting material, and it may have an insulating outer cover. The spindle 20 and sleeve 21 are insulated from the set by an insulating section 23 of the spindle, and by a non-conducting wall 22. The lead 25 may be connected to a resistor between grid and earth of the modulated valve 3. Specification 559,555 is referred to.
Patent GB-396454-A (GB)
Title: Improvements in or relating to pit props and chock pieces for use in coal mines and the like
IPC: E21D15/12
Filed: 1932-02-10
Abstract: 396,454. Pit props and supports. BRITTON, W., 2, Brompton Terrace, Whickham, MAGEE, S. S., Coley Hill, Westerhope, and WOOD & CO., Ltd., H., Sun Buildings, Collingwood Street, all in Newcastle-on-Tyne. Feb. 10, 1932, No. 3979. [Class 20 (ii).] Pit props or chocks of the type in which a cap is adjusted on the prop by means of a wedge, have a loose plate fitting on the cap so that it can be moved by hammer blows to cause the initial release of the cap. The cap 2 is formed with triangular-shaped side portions and a top flat portion to which is loosely fitted a plate portion 4 with projecting ends, to which blows may be applied. The cap is adjusted by means of a transverse wedge 5 fitting between it and a sloping portion at the end of the prop 1, and a transverse bolt 3 in a slot prevents separation of the cap. In a modification, the end portions 2 may be provided with inward projections to contact a bolt to prevent separation of the cap, and in a further modification, a separate wedge-head may be fitted to the top of the main prop for contact by the wedge. As applied to a chock, Fig. 7, the retaining bolt 14 slides in transverse slots in the bearing iron 10 and in coverplates 11 a, a wedge chock-block 11 being also used for contacting with the wedge.
Patent GB-1508747-A (GB)
Title: Manufacture of self-locking fasteners
IPC: F16B39/34
Filed: 1976-02-02
Abstract: 1508747 Applying resin to threaded fasteners LONG-LOK FASTENERS CORP 2 Feb 1976 [8 May 1975] 04001/76 Heading B2L [Also in Division F2] In the manufacture of self-locking threaded fasteners in which a patch of resin is bonded to the thread thereof, the resin is applied by clamping the bolts 6 on the periphery of a cylinder 8 which upon rotation contacts a portion of the thread with a transfer disc 26 partially immersed in a bath 32 of the resin. Following wiping of the applied resin 96 into the grooves of the thread by a curved plate 39, the bolts are unclamped by curved cam 24 and discharged from the cylinder. The resin may be thermoplastic or thermosetting. In the former case the bolts are heated by coil 3 as they are supplied from feed 2, and following resin application quenched in water bath 48, the resin bath 32 being heated at 34. The resin may be applied in one or more coatings in which latter case the cam 24 is removed from the unclamping position and feed 2 stopped. The clamp device comprises a member 78, pivoted at (84) [Fig. 2 (not shown)], which is pressed at 92, by action of a spring (85), into contact with the head 72 of the bolt. Release therefrom is effected by cam 24 which bears on a roller (88) located at the end of the member 78 opposite to the pivoted end 92.
Patent GB-914341-A (GB)
Title: Improvements in gas-liquid separators
Inventor: HODDINOTT PETER FROST
IPC: B01D45/08
Filed: 1959-02-05
Abstract: 914,341. Refrigerating. DAVEY, PAXMAN & CO. Ltd. Jan. 20, 1960 [Feb. 5, 1959], No. 4119/59. Class 29. An oil separator 1 located between the compressor and the condenser is divided into upper and lower chambers 4, 11 by a partition 9, the inlet 2 discharges through apertures 3 into the former, the refrigerant rises through demister 5 to the outlet 8, and the oil flows from chamber 4 over a weir 10 and through an orifice 12 into chamber 11 which is maintained under reduced pressure so that residual refrigerant is distilled from the oil. An elevated temperature is maintained by thermal insulation around the separator, and the reduced pressure, by a connection 13 to the compressor suction, the distilled refrigerant also being withdrawn through this connection. Oil leaves chamber 11 over weir 14. The separator may also be used to remove liquid from gaseous refrigerant in the suction line.
Patent GB-963790-A (GB)
Title: Stator winding for electrical machines
IPC: H02K3/22
Filed: 1963-02-04
Abstract: 963,790. Windings for dynamo-electric machines. BROWN, BOVERI & CO. Ltd. Feb. 4, 1963 [Feb. 5, 1962], No. 4383/63. Heading H2A. The cross-over spaces in a Roebel bar are filled with insulating wedges 3 and the whole bar is covered at least on the top and bottom surfaces with a semiconductive layer 7, e.g. of graphite or silicon carbide, in contact with the conductor group at the transposition points. Additional insulating layers 5 may be secured to the main insulation, or in a modification (Fig. 2, not shown) these layers may be semiconductive or covered with semi-conductive material. and secured to the conductor by semi-conductive adhesive.
Patent GB-1024500-A (GB)
Title: Polycyclic hydrocarbon conversions
IPC: C07C13/573
Filed: 1965-02-02
Abstract: The following conversions are effected in the presence of HF and BF3: (1) tetralin to (a) octahydroanthracene and octahydrophenanthrene together with benzene at 15-110 DEG  C., or (b) 1-(2-tetralyl)-4-phenylbutane at -50 DEG  to 15 DEG  C.;  (2) indane to (a) as-hydrindacene together with benzene at 52-110 DEG  C., (b) 1-(2-indanyl)-3-phenylpropane at 0-52 DEG  C., or (c) the novel compound 1-(4-as-hydrindacene)-3-phenylpropane together with benzene at 60-150 DEG C.;  (3)  1-(2-tetralyl)-4-phenylbutane to octahydroanthracene, or octahydrophenanthrene at 15-110 DEG C., and (4)  1-(2-indanyl)-3-phenylpropane to as-hydrindacene at 52-110 DEG C.  Reactions (1) and (2) use at least 1 mol. HF and 0.5 mol. BF3 per mol. of hydrocarbon and (3) and (4) at leat 1 mol. HF and 0.1 mol. BF3. The pressure should maintain HF in the liquid phase and a solvent is added if the hydrocarbon is solid at the reaction temperature.
Patent GB-161392-A (GB)
Title: Improvements in or relating to pistons for internal-combustion engines
IPC: F02F3/00
Filed: 1920-02-14
Abstract: 161,392. B.S.A. Cycles, Ltd., and Pearsall, R. H. Feb. 14, 1920. Pistons.-A piston for an internal-combustion engine is built up of a grooved head 1, a skirt 11, 12 of bobbin shape having a perforated waist 13, and a central column 6 fitted within the waist and secured by a flange 5 to the head 1. The column 6 is provided with a shoulder 8 beneath which it is perforated similarly to the waist. Selfaligning gudgeon - pin bosses 14, provided with collars 15 and placed into position from the interior of the piston, are carried by the waist and the column. The skirt and column may be made in one as shown in Fig. 8. The shirt is made of greater depth at the front and back.
Patent GB-1111281-A (GB)
Title: Improvements in fluid control valves
Inventor: CAMAC GEORGE
IPC: F16K3/10
Filed: 1965-02-03
Abstract: 1,111,281. Valves. SPEEDWELL RE. SEARCH Ltd. 29 April, 1966 [3 Feb., 1965], No. 4595/65. Heading F2V. A disc-shaped valve closure-member 48 with a peripheral seal 50 of P.T.F.E. is pivotally mounted on an arm 47 for hinged movement by a shaft 20 on which is threaded a hand wheel 30; the closure member 48 controls fluid flow from an inlet 41 to an outlet 16. The shaft 20 carries a roller 35 which coacts with a Z-shaped slot 34 in the adjacent casing 22; the positions of the roller and slot may be inter-changed. To open the valve, for example, the wheel 30 is turned counter-clockwise whereby the spindle 20 is moved axially to similarly move the closure member 48 from the seat 49, whereupon the roller 35 lies at one end of one of the axial portions of the slot 34 and so prevents the spindle from further axial motion but permitting rotation thereof. The roller 35 traverses the transverse limb of the slot 34 when the wheel is further turned and swings the closure member out of alignment with the seat 49. Upon the roller reaching the other end of the transverse limb of the slot still further rotation of the wheel 30 again causes axial movement of the shaft 20 and the roller to travel to the closed end of the other axial portion of the slot. The valve is closed by the reverse process. In another form, the axial and rotational movements of the valve are effected by separate controls acting on the shaft 20. The seat may embody two annular concentric seals. The valve housing is formed by two circular or triangular mild-steel elements 10, 11 that are lined with titanium sheet 14, 15, which latter encloses the seat 49 and inlet port.