baber/WOPTO huggingface dataset:
Patent GB-831508-A (GB)
Title: Rotor blades for rotary wing aircraft
Inventor: BONNETT HORACE WILSON
IPC: B64C27/473
Filed: 1956-12-03
Abstract: 831,508. Helicopter rotor blades. UNITED AIRCRAFT CORPORATION. Dec. 3, 1956, No. 36918/56. Class 4. A helicopter rotor blade comprises a balancing weight or weights which extend spanwise through at least a substantial portion of the blade span and may be positioned in a plurality of positions chordwise of the blade. In one embodiment the blade 10 comprises a profiled extruded hollow spar 12 secured to a root fitting 16 and a tip fairing 22, the blade profile being completed by a trailing edge fairing 14. The leading edge of the spar is formed with an internal groove 24 to house a rod 26 of high density material which serves as a balancing element. The interior surface of the spar is formed also with ribs 28 which strengthen the spar but primarily are used to locate a series of balancing blocks 30 which are grooved on opposed faces to accommodate the ribs. Each block is apertured for a spanwise extending rod 40 which may be secured in selected holes 43 in end ribs 20 and 21 of the blade. By this means the chordwise position of the weights and thereby their chordwise balancing moment may be adjusted. The number and spanwise location of the blocks may be varied to change the center of gravity of the blade spanwise and to vary the blade weight as is necessary to produce interchangeable blades. In a further embodiment, Figs. 4 and 5 (not shown) for use in a blade consisting of a circular tubular spar secured to fabric covered ribs, balancing is achieved by a plurality of spanwise extending rods which may be placed in selected chordwise positions. In a further embodiment, Figs. 6 and 7 (not shown), for use in an all-metal blade having a hollow profiled spar, a balance-rod is pivoted at the root about an axis normal to the chordal plane and is mounted in a slot in the tip rib for chordwise swinging movement, the rod being clamped at the tip in a selected position to provide a desired balancing effect. Specifications 586,443 and 732,966 are referred to.
Patent GB-341645-A (GB)
Title: Improvements in a process and apparatus for filtering liquids
IPC: B01D35/12
Filed: 1929-12-03
Abstract: 341,645. Filters. NILSSON, N. E., Aspabruk, Sweden. Dec. 3, 1929, No. 37029. Convention date, Dec. 4, 1928. [Class 46.] Liquid is passed horizontally through two filtering partitions, one of which is oscillated, while laths are moved over the other and cause the separated matter to fall to an outlet at the bottom of the filter receptacle. Liquid enters a filter casing through an inlet 3 and after passing successively through filter cloths 1, 2 is discharged through an outlet 4. The frame of the filter cloth 2 is hinged or pivoted and it is moved in one direction by rotating cams 6 and in the other by a spring 9. Matter separated by the cloth 1 is caused to move downwards by laths 14 on a chain passing round wheels 17, the laths being attached to the chain so that they hang downwards on the rising side but open outwards as they descend. The distance of the chain from the cloth 1 may be adjusted. An outlet 5 for the separated matter is provided with a two-valve trap. Warm water, steam, gas or air for cleaning the cloth 2 is delivered through a sprayer 25. The cloth 1 can be removed through a manhole 27. The outlet 4 may be provided with a bend h, Fig. 3, so that the filter is normally kept full of liquid during filtering, and with a straight connection with valve f which is opened to empty the filter. The plant may comprise two filters as shown, so that one can be in use, while the other is being cleansed.
Patent GB-336488-A (GB)
Title: Electric cables
IPC: H01B7/22
Filed: 1929-12-03
Abstract: 336,488. Chase, P. H. Dec. 3, 1928, [Convention date]. Armouring cabdes. - An electric cable sheath comprises non-resilient sections joined together by resilient expansion elements. In the construction shown in Fig. 1, a cable 1 with insulation 3 is armoured with lead strips 5 held together by resilient bellows 7 of copper, monel metal, tin-copper alloy or rust-resisting steel. Figs. 9 and 12 show typical forms of the bellows 7. The bellows 7 may be of simple arcuate shape or formed as re-entrant bellows. Various other forms of bellows are shown and described. The bellows may form part of the surface of the sheath, or may be lead-covered. Two or more bellows may be used in juxtaposition or a laminated bellows may be used.
Patent GB-1456464-A (GB)
Title: Catalyst compositions and their use in the polymerisation of  olefins
IPC: C08F4/00
Filed: 1974-08-23
Abstract: 1456464 Olefin polymerization catalysts MITSUI PETROCHEMICAL INDUSTRIES Ltd 23 Aug 1974 [24 Aug 1973] 37217/74 Addition to 1433537 Heading C3P A catalyst for the homopolymerization of a mono olefin or the copolymerization thereof with an ethylenically unsaturated compound comprises (a) an organometallic compound of a metal of Groups I-III of the Periodic Table, and (b) a component prepared by reacting a T 1  or V compound with the reaction product obtained by (i) reacting an organoaluminium compound and an alcohol simultaneously or sequentially in this order with a solid magnesium dihalide carrier or (ii) by reacting the organoaluminium compound with the alcohol and then reacting the resulting product with the magnesium dihalide. Ethylene may be homopolymerized or copolymerized with propylene, butene, hexene, methyl pentene, octene, butadiene, isoprene, ethylidene norbornene, dicyclopentadiene and 1,4-hexadiene. In the examples ethylene is homopolymerized or copolymerized with butadiene or butene-1 in n- or iso-hexane or kerosene continuously or batchwise in the presence of hydrogen using a catalyst in which (a) is triethyl-, triisobutyl- or tri-n-hexyl aluminium or diethylaluminium chloride and (b) is formed by reacting MgCl 2 , one of diethylaluminium bromide or chloride, triethylaluminium, ethylaluminium dichloride, tri-n-hexyl aluminium, diethylaluminium ethoxide or diisobutylaluminium hydride and one of ethanol, methanol, isopropanol, n-butanol, n-octanol, benzyl alcohol, ethylene glycol, propenyl alcohol or in one of the prescribed orders and reacting the product with one of TiCl 4 , VCl 4 , VOCl 3 , Ti(OEt)Cl 3 , TiBr 4  or Ti(OBu) 2 Cl 2 .
Patent GB-989425-A (GB)
Title: Frame grid and method of fabrication
IPC: H01J19/00
Filed: 1961-10-17
Abstract: 989,425. Making grids. RADIO CORPORATION OF AMERICA. Oct.17, 1961 [Oct.31, 1960], No. 37254/61. Heading B3A. [Also in Division H1] A method of making a discharge tube grid comprises winding wire around a pair of spaced supports, and between two pairs of cross-straps extending between, and fixed to, the supports, the ends of the wire being clamped between the straps and supports. As shown, a grid frame comprising supports 11 and pairs of straps 18, 20 is mounted on a mandrel 32 secured to a rotatable shaft 34, and wire from spool 61 is secured in jaws 79, wire guide 55 being disposed opposite the outer ends of supports 11. A clutch which couples, a driving system to shaft 40 and lead screw 47, which feeds the winding mechanism, is disengaged while an indexing motor 46 first rotates mandrel 32 to an angle of 45 degrees from the vertical whereupon stepped earn 72 is rotated by motor 78 to cause carriage 57 and wire guide 55 to move one step forward threading the wire between strap ends 22, 23, and then rotates mandrel 32 to a vertical position. Solenoid 84 is then energized to actuate crimping tool 82 which bends strap ends 22, 23 over support 11 clamping the wire therebetween. Energization of solenoid 81 causes rapid movement of jaws 79 thus breaking off the projecting wire end. The driving system is then engaged to rotate shaft 40 and mandrel 32, and to advance table 59, carriage 57 and wire guide 55 along the length of the grid frame. Upon completion of the winding, the driving system is disengaged and the end of the grid wire is clamped between straps 20 and supports 11 by the method used at the start. Finally carriage 57 is allowed to recoil under the action of springs 77 to break off the wire. Grid frames may be automatically loaded and unloaded from mandrel 32, and jaws 79 may be indexed for picking up the starting end of wire 63 from wire guide 55.
Patent GB-1020869-A (GB)
Title: Booster for booster-assisted actuating systems
Inventor: REYNOLDS DESMOND HENRY JAMES
IPC: B60T13/24
Filed: 1961-10-18
Abstract: 1,020,869. Servo-operated hydraulic brakes; valves. GIRLING Ltd. Oct. 12, 1962 [Oct. 18, 1961], No. 37313/61. Headings F2F and F2V.  A pressure-differential-operated booster for hydraulic braking systems includes a piston or diaphragm across which a pressure difference is developed by the admission or withdrawal of a pressure medium through a valve in which the valve is formed by an annular sleeve 11 forming a seating for a flat faced valved 14 which carries on its face a tapered projection 23 which, when the valve is closed, protrudes into the sleeve 11 to limit the effective area of the valve opening on initial opening of the valve to increase the cross-sectional area of the annular space between the sleeve and the projection at a progressively increasing rate as the valve opens. The space in the cylinder 2 on the lefthand side of the piston 1, as shown in Fig. 1, communicates at 3 with a source of vacuum and the space on the right-hand side is connected to atmosphere when a valve 5 is opened. This valve 5 comprises a valve head 14 which is urged towards concentric seatings by a bowed spring 16, one of the seatings, 15, being formed in the piston 1, in which also there is a passage 17, and the other being constituted by the end of a sleeve 11. The sleeve 11 is secured to the end of a push rod 10 which is slidable coaxially in a piston-rod 7. This piston-rod 7 is shaped to allow atmospheric air to pass through a filter 4 and enter a space 19, whence it can pass through radial holes 18 to the inside of the sleeve 11. The valve head 14 is shown in an intermediate position. Normally the push rod 10 holds the sleeve 11 further to the left, thus lifting the valve head 14 off the seating 15 and putting the right-hand end of the cylinder 2 in communication with the left-hand end and source of vacuum. The booster is brought into action to augment the braking force by causing a controlling force to cease to act on a button 9 at the end of the push rod 10, on which a spring 13 moves the sleeve 11 to the right. The valve head 14 then engages the seating 15, cutting off communication between the ends of the cylinder 2, and then the sleeve 11 moves away from the head 14, allowing atmospheric air to pass through the passage 17 to the righthand end of the cylinder, whereupon the piston 1 is urged to the left, actuating the brakes. The boss 23 obtrudes into the mouth of the sleeve 11 to restrict the flow of air on initial opening of the valve and so obviate a sudden rush of atmospheric air that would cause a juddering or " stop-go " motion of the booster.
Patent GB-905485-A (GB)
Title: Improved pressing apparatus
Inventor: WARD JOSEPH ALLAN
IPC: B30B9/02
Filed: 1957-11-30
Abstract: <PICT:0905485/III/1> Oil may be extracted from vegetable seeds by means of an apparatus in which oil-bearing material is fed to the upper end of a barrel member 1, preferably by a feed worm (not shown), and compressed, preferably by a reciprocating cylinder (not shown) enclosing the worm.  The width of the extrusion space formed between a conical part 3 of the barrel member and a conical pressure piece 12 may be varied by adjusting the axial position of the latter by means of a nut 22.  Both barrel and pressure piece are rotationally fixed, and only one need be perforated.  Knives 11 cut the extruded material into strips.
Patent GB-326797-A (GB)
Title: Improvements in or relating to bakers' ovens
IPC: A21B1/14
Filed: 1928-12-18
Abstract: 326,797. Clement, R. Dec. 18, 1928. No Patent granted (Sealing fee not paid). Bakers' ovens.-In a bakers' oven of the kind having a false sole adapted to be rocked into a sloping position, a hinged flap is provided above the oven mouth and connected with the sole rocking mechanism so that as the sole is tilted the flap is closed and vice versa. The baking chamber c, is provided with false soles i, i, each being pivoted at its front end on a cross bar g and adapted to be tilted by an arm n carried by a cross shaft o rotatably mounted in the side walls and turned by a handwheel s through a shaft r and gears p, q. Above each mouth b is mounted a hinged flap or half-door v which is connected by suitable gearing with the operating shaft r. The chamber c is heated by means of steam pipes d of which the lower row forms the fire grate f.
Patent GB-619660-A (GB)
Title: Improvements in or relating to electro-magnetic interrupters
IPC: H04M19/02
Filed: 1946-12-19
Abstract: 619,660. Electromagnetic interrupters. STANDARD TELEPHONES & CABLES, Ltd. Dec. 19, 1946, No. 37409. Convention date, May 31, 1944. [Class 38(v)] An electromagnetic interrupter with a lowfrequency has a contact member 1 pivoted on a fixed member 2 and controlled by a dead-centre spring 3. The contact 1 lies between two contact springs 4, 5 that are connected by an insulating piece 6. With the parts in the position shown, a circuit is completed through the contacts 1, 4 to the electromagnet 9 which attracts its armature 8 causing a stud 13 to press the springs 4, 5 to the left carrying the arm 1 over its dead-centre position so that it snaps from the contact 4 to the contact 5. This short-circuits the coil and introduces a resistance 14 in its place. The springs 4, 5 then move back under their own bias carrying the arm 1 back over the deadcentre position so that it snaps from 4 to 5 and the cycle recommences. A copper ring 10 may delay the rate of change of flux. The armature may also operate other contact springs.
Patent GB-367490-A (GB)
Title: Improvements in means for emptying domestic refuse or dust bins
IPC: B65F1/14
Filed: 1930-12-11
Abstract: 367,490. Refuse bins. TAPP, E. T. J., 10, Manville Road, Tooting Common, and CRASKE, H., 31, Ryecroft Road, Streatham Common, both in London. Dec. 11, 1930, No. 37430. [Class 26.] Refuse bins are emptied by placing a container bottom upwards over the bin and inverting the two together, the container being provided with a rocker member to facilitate the inversion. The container has slots 8, Fig. 1, or bulged portions, to receive the handles of the bin, and the rocker member consists of strips 2 connected by one or more cross-bars 3, and provided or not with notches 4a. A dust cart has a platform 6, Fig. 2, and adjustable notched or other supports 7 for engagement with the cross-bars or notches of the rocker member. Specification 355,745 is referred to.
Patent GB-379128-A (GB)
Abstract: 379,128. Calculating - machines. MERZ, A., 21, Hammerr÷dchen, Zella- Mehlis, Thuringia, and MERCEDES BUROMASCHINEN-WERKE AKT.-GES., Benshausen, both in Germany. Oct. 8, 1931, No. 27977. [Class 106 (i).] In a calculating machine having several line and column totalizers and in which controlling plates attached to the column totalizers are settable by hand to determine whether and what kind of calculation shall be performed in the line totalizers, the controlling plates by means of setting members upon them may each be set and secured independently of one another. To a column totalizer Z, Figs. 1 and 3, is fixed a plate 2 having a projection 2a engaging grooves 4a, 4b, 4c in an adjustable controlling plate 4. This plate is guided by slotted holes 4d through which project pins 3 secured to the plate 2. The plate 4 has fixed to it a screwed rod 5. The pins 3 have reduced ends 3a and on these is secured a plate 8 by nuts 14 and spacing collars 10. The plate 8 has a projection 8c engaging grooves 6a, 6b, 6c in a second adjustable control plate 6 to which is fixed a screwed bush 7 provided with a nut 9. The rod 5 projects through the bush 7 and has a nut 11 prevented from moving axially by a groove 11a engaging a fixed plate 12. The plates 4, 6, acting on bell cranks 17, 18, cause the setting of the respective line totalizers for addition, inaction or subtraction according to the vertical position of the plates. To adjust the plate 4, the nut 11 is turned until the notches 4a, 4b, 4c are withdrawn from engagement with the projection 2a. To adjust the plate 6 the nut 9 is turned to move the plate 6 until it is withdrawn from the projection on the fixed plate 8. In a modification, Fig. 7, one control plate 29 is adjustable on pins 25, 26 fixed to the column totalizer Z and is secured in place by nuts 40, 41 which press collars 31 on the pins 25, 26 against the plate 29. On the pins 31 is also fixed a plate 35 so arranged that is cannot move vertically, a projection on this plate engaging positioning grooves in the second control plate 32. A screwed rod is attached to the plate 32 and, passing through a slot in the plate 35, is provided with a nut 38. The plate 29 has positioning means 28 and is freed for movement by unscrewing the nuts 40, 41. The plate 42 is released by unscrewing the nut 38.
Patent GB-1352657-A (GB)
Title: Electrochemical cell comprising solid electrolytes
IPC: H01B1/06
Filed: 1972-08-16
Abstract: 1352657 Solid state cells PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Aug 1972 [19 Aug 1971] 38146/72 Heading H1B In a rechargeable electrochemical cell having a solid electrolyte at least one electrode consists wholly or partly of a solid solution of composition Cu 1 + y Cr 2 Te 4  wherein y is from 0 to 1, or CuAg y Cr 2 Te 4 , wherein y is up to 0À4. Such compounds have the spinel structure or a slight variation thereof and allow transport of Cu or Ag ions. The other component of the electrode may be RbAg 4 I 5  and/or carbon. Examples include the cells CuCr 2 Te 4 /CuCl 2 /Cu, CuCr 2 Te 4 /RbAg 4 I 5 / mixture of powdered Ag and AgRb 4 I 5  and Pt/CuAg 0.25 Cr 2 Te 4  + RbAg 4 I 5 / RbAg 4 I 5 /Ag powder + RbAg 4 I 5 . For use as a timer the second electrode is inert, e.g. gold or carbon.
Patent GB-1417393-A (GB)
Title: Structural assemblies
IPC: E06B3/964
Filed: 1971-08-13
Abstract: 1417393 Curtain walls R L STOAKES 13 Nov 1972 [13 Aug 1971[ 38225/71 Headings E1R and E1W A structural assembly for a curtain wall construction comprises a series of elongate members 2, 6 forming a frame and carrying flexible sealing means in which panels or panes can be mounded to provide a watertight facade. The sealing means accommodates relative movement provided for between at least some of the junctions between the elongate members by a connection element 66 insertable into and engageable with guide means provided by one of the members 2 so as to be slidable longitudinally thereof. Another of the members 6 having a registering portion 26 against which the connection element is located. Locking clamps 68 fix the element 66 to the member 6.
Patent GB-1503878-A (GB)
Title: Nonmedical antimicrobial agents
IPC: C07D309/10
Filed: 1976-09-16
Abstract: These compositions are prepared by mixing with a basic composition an appropriate quantity of at least one compound of formula R-X-CH=CH-COOY, in which R, X and Y are as defined in Claim 1. The basic composition, on which it is desired to confer an improved resistance to degradation caused by the action of microorganisms, may for example be a cosmetic, a liquid detergent, an emulsion for machine oil, and the like.
Patent GB-1516767-A (GB)
Title: Flow straighteners for liquid flows
IPC: F16L55/00
Filed: 1976-09-16
Abstract: 1516767 Pipe elbows; flow straightener ESCHER WYSS GmbH 16 Sept 1976 [16 Sept 1975] 38416/76 Headings F2G and F2P [Also in Division G3] A flow straightener for liquids, e.g. for straightening the flow of stock in a paper machine, comprises a tube 1, Fig. 1, having at least one internal web 2 extending longitudinally with one longitudinal edge 3 secured to the tube wall and the other longitudinal edge 4 spaced from the tube wall. Moreover, the upstream end of the web has an edge 6 which forms an acute angle α with a plane E perpendicular to the longitudinal axis of the tube adjacent the upstream end. This construction avoids collections of fibres or other suspended solids on the web or webs. Preferably the angle α is between 15 and 60 degrees. The edge 7 at the downstream end may be similarly angled. The webs may be arranged in a pipe elbow, Figs. 3 and 4 (not shown). In Figs. 6 and 7 (not shown), the tube is of rectangular cross-section and has four webs arranged as two opposed pairs or are interleaved.
Patent GB-1478325-A (GB)
Title: Strike-correcting arrangement for print hammers
IPC: G06K15/08
Filed: 1974-09-04
Abstract: 1478325 Control of printers COMPAGNIE INTERNATIONALE POUR L'lNFOBMATIQUE CII-HONEYWELL BULL 4 Sept 1974 [5 Sept 1973] 38660/74 Heading G4H A control circuit for a belt printer comprises means for adjustably delaying hammer actuation to compensate for variations in the speed of the character support. The belt 101, Fig. 1 (not shown) contains holes, corresponding with characters thereon, which are sensed to provide signals indicating which character will next be in alignment with a hammer. At time t 0 , Fig. 3 a monostable provides a delay pulse of length td, after which the hammer strike amplifier is actuated. The hammer and belt trajectories M 1 , D coincide at time t 2  if the belt is moving with speed V; if the speed has altered to (V-#V) then coincidence takes place at time t 2 , but there is a degree of misalignment F 1 , F 1 <SP>1</SP>. The control circuit of the present invention delays actuation of the monostable by a time tr so that the hammer trajectory becomes M 2 , and the hammer strikes the character at time t 3  in alignment therewith. The delay time tr = t 3  - t 2 . The control circuit comprises means 2, Fig. 2 (not shown) for counting N pulses (Nα actual strike time as dictated by the actual speed of the support); the count N is fed, to a subtractor together with a number N<SP>1</SP>α strike time relative to the nominal speed of the support. The difference #N=N-N<SP>1</SP> is fed to a counter (5) which counts down in a time equal to the required delay tr, after which a signal is passed to the monostable (7).
Patent GB-1475674-A (GB)
Title: Thermal stress reducing arrangements
IPC: F22B1/06
Filed: 1974-08-16
Abstract: 1475674 Steam generators BABCOCK & WILCOX Ltd 16 Aug 1974 [16 Aug 1973] 38726/73 Heading F4A [Also in Division F2] A heat exchanger (Fig. 1), used as an economiser or/and evaporator or/and superheater or as a reheater for a boiler associated with a liquid sodium cooled nuclear reactor of a nuclear power plant, comprises a vessel 1 which contains a tube bank 5 for heating water with or without steam or saturated or superheated steam. The bank 5 comprises several tubes coiled helically in an annular space 6, liquid sodium flowing downwards through this space. Inlets 8 and outlets 9 for the liquid sodium are provided. The tubes extend to the bank from a toroidal inlet header 12 through penetrations 13 in the lower dished end piece of the vessel, and extend from the bank to an outlet header 15. Sealing fittings 21 prevent the liquid sodium from flowing down outside the space 6. The coils of the tube bank 5 are supported by members attached to brackets 22 which extend from the lower end of a spinal column 11, the latter itself extending through the top of the vessel 1. Thermal stress is minimized where the tubes enter the vessel at 13 by use of shrouding sleeves (see Division F2) which extend at least to the level 36.
Patent GB-1531110-A (GB)
Title: Antennas
IPC: H01Q13/02
Filed: 1977-09-16
Abstract: 1531110 Horn antenna HUGHES AIRCRAFT CO 16 Sept 1977 [16 Sept 1976] 38792/77 Headings H4A A conical horn antenna includes superposed dielectric bands 25, 26 which introduce higher order modes. The bands are dimensioned and positioned such that these higher order modes are in phase with the dominant mode at the horn aperture, ensuring low ellipticity of the radiation pattern.