baber/WOPTO huggingface dataset:
Patent GB-771883-A (GB)
Title: Improvements in or relating to blade elements
Inventor: BELLAMY ROLAND ALBERT
IPC: B23P15/04
Filed: 1953-12-22
Abstract: 771,883. Making hollow blades; destructible cores. ROLLS-ROYCE, Ltd. Jan. 14, 1955 [Dec. 22, 1953], No. 35669/53. Classes 83 (2) and 83 (4). A method of manufacturing a hollow blade element for a fluid machine comprises the steps of shaping a metal tube by a pressing or the like operation to give it a cross-section having a portion of desired aerofoil-section and an extra portion which extends beyond the location of the desired trailing edge, and connecting the walls of the aerofoil-section portion together and trimming off the extra portion. In the manufacture of hollow inlet guide vanes for a compressor of a gas-turbine engine, a rectangular sheet of metal is bent into a tube 11, Fig. 2, the edges being butt-welded together at 12; the weld is dressed and the tube annealed. The tube is then filled with wax and subjected to a first pressing operation which produces the shape shown in Fig. 3, the weld being at the trailing edge; the ends of the tube are milled parallel, the tube de-waxed by warming degreased and pickled. An auxiliary tube 14 of oval cross-section and which is shorter than the tube 13 is inserted within the tube 13 and secured therein by spot-welding 15. The tubes 13, 14 are filled with wax and subjected to a final shaping operation by pressing between dies, thus producing a vane as shown in Fig. 6, having a portion 16a of desired aerofoil crosssection and an extra portion 16b extending beyond the line 16c of the trailing edge of the desired aerofoil-section. The vane is de-waxed and surface-finished as by a planishing operation. After de-greasing, the concave and convex surfaces of the vane are welded together by seam welding along the line close to the desired trailing edge; the trailing edge of portion 16b may be opened as by a dressing operation with an emery wheel for ease of seam welding. The extra portion 16b is trimmed off along the line 16c of the trailing edge, and the trailing edge of the vane is radiused. The vane is trimmed to desired shape at its ends and given any desired surface finish, e.g. electro-polished. The extra portion 16b of the blade may be removed after the first shaping operation and before the final shaping operation; in this event the walls may be connected together after the trimming operation, preferably after the final shaping operation.
Patent GB-1142476-A (GB)
Title: Improvements in and relating to multiple-part tubular structures
Inventor: HARVEY DENNIS FRANCIS
IPC: F16L23/036
Filed: 1965-08-20
Abstract: 1,142,476. Joints for tubular components. GIRLING Ltd. 19 Aug., 1966 [20 Aug., 1965], No. 35789/65. Heading F2G. [Also in Division E2] Tubular components 10, 12 e.g. forming a servo-motor housing, have respectively, a peripheral lip consisting of a radial S-shaped part 14 and an axially-directed part 16 which is provided with spaced, circumferentially extending slots 18, and a radial flange 20 which engages in the part 16. A fluid seal between the components is formed by the bead 24 of a diaphragm and which is axially compressed by wire clips of C-shaped configuration the free downturned ends 28 of which pass through the slots 18 to bear against the flange 20. In modifications, (a) a sheet metal clip has spaced, downwardly curved fingers which engage behind the part 14 and a tongue for engagement behind the flange 20, (b) the flange 20 comprises a number of upstanding and circumferentially spaced, radial flanges each of which is received in a slot in the part 16 and the clips each consist of a bifurcated stem the free ends of the arms of which are formed with barbs engaging shoulders within a slot.
Patent GB-368326-A (GB)
Title: Improvements in distilling and gasifying carbonaceous materials underground
IPC: C10G1/02
Filed: 1930-11-28
Abstract: 368,326. Distilling and gasefying unmined coal. WADE, H., 111, Hatton Garden, London.-(Karrick, L. C. ; Salt Lake City, Utah, U.S.A.) Nov. 28, 1930, No. 35888. [Class 55 (ii).] Unmined coal, oil shale or the like is distilled and gasefied in situ, and liquid and gaseous products recovered, by passing hot fuel gases through tunnels containing the broken material, and subsequently gases of an oxidizing nature, so that distillation gases are obtained from which oils are recovered, and also a yield of producer gas or water gas. Shafts are sunk through which steam, air or gases are introduced into tunnels which are filled with material previously broken by firing charges, and other shafts serve to withdraw the gases and vapours. To prevent agglomeration and to harden the surfaces of the lumps of coal, a mixture of producer gas and air is employed, and distillation at high or low temperature may be effected. The vapours resulting from low temperature distillation may be cracked to lighter hydrocarbons by admixture with highly heated water gas, or producer gas obtained from the hot coke residue. A shaft 4 is driven - through the earth 2 to a coal stratum 1, and connects with a working tunnel 5 driven horizontally, these shafts containing pipes 12, 13, 14 for air, gas, and steam respectively. Smaller tunnels 6 run from the base of shafts 4, and connect with gas tunnels 6<1> and gas outlet shafts 7. Drill holes 8, 9 are made for the charges which break up the seam into pieces, which are arranged on the larger slabs 10 obtained by blasting the floor previously to the coal seam, a channel 11 being formed for the passage of gases. In deposits of great thickness, the tunnel 6 may be vertical, with the tunnels 5, 61 above and below the rich strata, or the tunnel 61 may be driven in a zig-zag manner so as to support the material heated. Each shaft 7 is connected to a manifold 15 having an explosion door 17 and balanced check valve 18 leading to a chamber containing a steam boiler 20 for using either the sensible heat or the heat of combustion of the gases. A gas control tunnel 24 with connections 25 enables pyrometers or gas sampling tubes to be inserted. The gases from the pipes in the shaft 4 may be preheated by passage through worked-out galleries which are still hot.
Patent GB-341928-A (GB)
Title: Improvements in pressing machines
IPC: D06F71/06
Filed: 1929-10-23
Abstract: 341,928. Safety devices for machinery. AMERICAN LAUNDRY MACHINERY CO., Cincinnati, Ohio, U.S.A.-(Assignees of Singiser, J. P. ; 1800, N. Spalding Avenue, Chicago, U.S.A.) Oct. 23, 1929, No. 35891/30. Convention date, May 17, 1929. Divided on 341,927. Drawings to Specification. [Class 80 (iv).] The machine described is identical with that described in Specification 341,927, but the claims relate to the operating-means for one of the valves being ineffective to actuate such valve until the other valve has been actuated. The exhaust-valve operating-means comprise the two normally-disconnected portions, described in that Specification, which are placed into operative connection with one another only by the actuation of the inlet-valve operating -means.
Patent GB-1366410-A (GB)
Title: Producing a polarized piezoelectric ceramic member
IPC: H01L41/257
Filed: 1972-08-01
Abstract: 1366410 Piezo-electric crystals SIEMENS AG 1 Aug 1972 [3 Aug 1971] 35967/72 Heading H1E A ceramic piezo-electric element 2 is polarized by heating it dielectrically with an alternating voltage from a transformer 1 and then cooling it while applying a direct voltage across the element. The cooling may be natural or assisted. The process is applicable to materials such as barium titanate and similar Perovskite structure mixed crystals.
Patent GB-1361454-A (GB)
Title: Fibrillated film yarn
IPC: D01D5/42
Filed: 1971-07-30
Abstract: 1361454 Fibrillated yarn FIBER INDUSTRIES INC 30 July 1971 [30 July 1970] 35968/ 71 Headings DID DIF and D1W A fibrillated yarn has a tenacity of 0.1 to 10 g.p.d., a denier of 30 to 10,000, an elongation at break of 0.5 to 75 per cent, and an initial modulus of 2 to 300 g.p.d., and comprises fibrils of a synthetic, organic polymer having an average denier of 0.5 to 60, a width/ thickness ratio of 0.5/1 to 20/1 and an average ratio of 2/1 to 12/1, the fibrils exceeding 40cm. comprising 70 per cent by weight of the yarn. The polymer may be polyethylene terephthalate, polytrimethylene terephthalate or polytetramethylene terephthalate. The yarn is made by fibrillating a longitudinally oriented tape by passing it under a tension of 0.05 to 0.2 g.p.d. through at least four gaseous fluid twisters. In each twister a tangential gas jet; supplied at a gauge pressure of 3.0 to 5.5 b.g. per cm<SP>2</SP> and having a velocity of 0.5 to 1.0 times sonic velocity at the point of contact with the tape; imparts to the tape at least 20,000 times per minute of false twist. Adjacent twisters twist the yarn in opposite directions. The yarn is wound up at a speed of at least 300 metres per minute. The tape may comprise polyethylene terephthalate having, to assist fibrillation, 0.1 to 25% by weight of an incompatible polymer, e.g. polypropylene, dispersed therein. The false twisters may be formed in pairs, Fig. 1, and comprise concentric false-twisting bores 12, 14 supplied with gas via passageways 24, 26 intersecting the bores tangentially and on opposite sides of the common bore axis. To tension the tape the passages may both be inclined in an upstream or downstream direction, or one may be inclined upstream and the other downstream. The passages then intersect the bores at an angle of 15 to 70, preferably 45 to 60.
Patent GB-1435557-A (GB)
Title: Mineral mining installation
IPC: E21D23/00
Filed: 1973-07-30
Abstract: 1435557 Mining conveyers GEWERKSCHAFT EISENHUTTE WESTFALIA 30 July 1973 [1 Aug 1972] 36080/73 Heading B8A In a mining installation comprising a conveyer 2 and a plurality of support units 1 in a longwall system wherein each unit 1 is provided with at least one roof support prop 15 and an advancing ram 3, the latter is capable of adopting either of two conditions when the support unit thereof is in an advanced position, namely a first condition in which movement of the conveyer towards the support unit is rigidly resisted and a second condition in which the conveyer is permitted to yield towards the support unit through a predetermined distance. The ram 3 acts on the conveyer by way of a pivotal cross-head 9 and a pair of bell crank levers 4 co-operating with brackets 5 having a pair of stop faces 10, 11. The ram 2 is also adapted to be connected by a valve 17 with an elastic pressure reservoir so that it can yield through a reserve stroke R equal to the distance X shown to allow passage of the winning machine. In a modification, see Figs. 3 and 4 (not shown), the bell crank lever system above is replaced by a pair of hydraulic aligning jacks disposed at the forward end of the bore of the support unit. The aligning jacks are pressurized to the same extent as the advancing jack and since their effective area of their pistons is at least twice as great as that of the piston of the advancing jack the latter has a reserve stroke R corresponding to the distance X allowed for " breathing " of the conveyer. Again the advancing jack and the aligning jacks may be connected by a valve with an elastic pressure reservoir according to the type of winning machine employed.
Patent GB-619389-A (GB)
Title: Improvements in and relating to driving belts
IPC: F16G7/00
Filed: 1946-12-06
Abstract: 619,389. Belt fastenings. DICK, Ltd., R. & J., and MACKENZIE, J. D. Dec. 6, 1946, No. 36114. [Class 80 (i)] In a driving belt of the type comprising blocks secured to a binder, the two ends of the binder a are interconnected to form a scarf joint c by means of bolts d screw-threaded at both ends thereof, which secure the blocks b to the binder a, the bolts having washers e integral therewith and disposed between the blocks and the binder.
Patent GB-1212576-A (GB)
Title: Improvements in centrifuges
IPC: B04B3/02
Filed: 1968-07-30
Abstract: 1,212,576. Pusher plate movement control in centrifuge. ALFA-LAVAL BERGEDORFER EISENWERKE G.m.b.H. 30 July, 1968 [14 Dec., 1967], No. 36202/68. Heading B1D. The axial reciprocation of pusher plate 5 within the rotary drum 1 of a centrifuge is effected by piston-cylinder motor 2, 3, 7, which rotates with the drum, and controlled by sensors 15, 24, which respond to the proximity of emitter 9, carried by piston 7, to operate magnetic valve 18 and reverse the flow of hydraulic oil to the motor. Thus piston 7 and plate 5 are repeatedly reciprocated, and the length and end positions of the stroke described by plate 5 are adjustable by moving sensors 15, 24 along the axis of cylinder extension 8. The electric circuit includes a variable time delay 16, which may also vary the stroke length of plate 5, and amplifier 17. In Fig. 1, valve 18 controls oil flow to the motor directly, while in Fig. 2 (not shown) valve 18 controls a fluid valve (32) which in turn actuates a fluid-operated valve (31) to reverse flow to the motor.
Patent GB-452204-A (GB)
Title: Improvements in annealing furnaces
IPC: C21D9/00
Filed: 1934-12-18
Abstract: 452,204. Gas burners. BRITISH FURNACES, Ltd., and HOPKINSON, P., Derby Road, Chesterfield.-(Surface Combustion Corporation ; Toledo, Ohio, U.S.A.) Dec. 18, 1934, No. 36240. [Class 75 (i)] [See also Group XII] In a furnace heated bv radiation from horizontal tubes 31 each fitted at its respective ends with a gas burner and a compressed-air jet exhauster, the burner comprises a central tube 36 supplied with gas under the control of a valve 38<1> and projecting into the open end of the heating tube 31, the tube 36 being surrounded by a jacket 48 to which an igniting mixture of gas and air is supplied from a valve-controlled pipe 50. In operation, the gas supplied by the central tube 36 and air, drawn in from the atmosphere by the exhauster at the outlet end of the tube 31, flow in parallel streams separated by flames produced by igniting the mixture supplied through the jacket 48 at its outlet end 46 ; combustion of the main gas and air supplies is thus delayed and the highest temperature is attained at a point intermediate the ends of each heating tube 31.
Patent GB-1339279-A (GB)
Title: Endless track vehciles
IPC: B62D55/20
Filed: 1970-12-22
Abstract: 1339279 Endless-track vehicles BLAW KNOX CONSTRUCTION EQUIPMENT Inc 22 Dec 1970 [31 Dec 1969] 36287/71 Divided out of 1339278 Heading B7H  The subject-matter of this Specification is included in Specification 1,339,278 but the claims are directed to an endless track vehicle having a non-rigid frame supported by a pair of endless tracks engaged by bogie wheels mounted on a bogie carriage non-resiliently supported on the frame. Specification 1,339,280 is also referred to.
Patent GB-1191895-A (GB)
Title: Improvements in or relating to Sulphoalkylcarbamate Esters
Inventor: EISEMAN FRED SAMUEL
IPC: C08G65/338
Filed: 1967-08-08
Abstract: 1,191,895. Sulphoalkylcarbamate esters. GAP CORP. 8 Aug., 1967 [5 Oct., 1966], No. 36367/67. Heading C2C. [Also in Divisions C3 and C5] Novel Sulphoalkylcarbamate esters of the formula wherein R is C 8-24  alkyl, R‹ or R<SP>1</SP> is H or C 1-3  alkyl, at least one of R‹ and R<SP>1</SP> being hydrogen, R<SP>11</SP> is H or C 1-4  alkyl, n is 3 to 150, x is 1 to 5, and M is H, Na, K or Li, R<SP>1</SP> being the same or different in the same compound, with the further proviso that only one of R<SP>1</SP> and R<SP>11</SP> is H, are prepared by reacting 1 mole of an alkoxylated primary or secondary aliphatic alcohol of from 3 to 24 carbon atoms inclusive containing 3 to 150 alkyleneoxy units inclusive with a molar excess of phosgene and treating the resulting chloroformate ester with 0.30% aqueous caustic soda and an alkali metal salt of a 2-aminoalkane sulphonic acid, or an alkali metal salt of an N- alkylaminoalkane sulphonic acid at a pH of 10À5 to 11.
Patent GB-805116-A (GB)
Title: Improvements in or relating to ball joints
IPC: B60G7/00
Filed: 1956-11-29
Abstract: 805,116. Ball and socket joints. THOMPSON PRODUCTS, Inc. Nov. 29, 1956 [Dec. 5, 1955], No. 36557/56. Class 65(2) fAlso in Group XXXII] In a ball joint particularly for use in vehicle steering and wheel suspension mechanism, the housing comprises two internally-facing segmental-spherical bearing surfaces, the upper surface 20a co-operating with the bearing surface of a stud 23, and the lower surface 20b having a bearing ring 27 of self-lubricating plastics material forced into sealing engagement with it by a resilient sealing ring 26, e.g. of synthetic rubber, which more than fills a recess 30 in the bearing ring and preloads the bearing surfaces when the housing portions are clamped together. Lubricant for the surface of the stud inserted through the fitting 32 is maintained under pressure in the reservoir 33. Spiral lubricant grooves may be formed on the stud head 23. Specification 652,432 is referred to.
Patent GB-1151994-A (GB)
Title: Preparations for and a Method of Combating Ticks
IPC: A01N57/12
Filed: 1966-08-16
Abstract: 1,151,994. Treating tick-infested animals with organo-phosphorus compounds. CIBA Ltd. 16 Aug., 1966 [18 Aug., 1965]. No. 36631/66. Heading A5E. Tick-infested animals are disinfected by treatment with a compound of the formula wherein R, R 1 , R 3  and R 4  each represent a C 1-4  alkyl radical, or R 3  and R 4  each represent a hydrogen atom or R 3  or R 4  represent a C 1-4  alkoxy radical, and R 2  represents a hydrogen atom or halogen radical. Cattle or sheep may 'be treated with dips or sprays in which the active compounds are dissolved or emulsified.
Patent GB-932670-A (GB)
Title: Improvements in or relating to vinylation of tertiary alcohols
IPC: C07C31/13
Filed: 1960-10-25
Abstract: A catalyst for the conversion of tertiary alcohols to their vinyl ethers by reaction with acetylene (see Group IV(b)) comprises an alkali metal alkoxide promoted with an oxide of an alkaline earth metal or of magnesium.ALSO:Vinyl ethers of tertiary alcohols are prepared by reacting together, in the liquid phase at a temperature of from 100 DEG C. to 250 DEG C. and at an elevated pressure of up to 500 p.s.i.g. in the presence of a catalyst comprising an alkali metal alkoxide and an oxide of an alkaline earth metal or of magnesium, acetylene and a tertiary alcohol of formula <FORM:0932670/IV(a)/1> wherein the R groups may be the same or different and represent alkyl, aryl, aralkyl, alkaryl or cycloalkyl radicals or two R groups together with the tertiary carbon atom form a cycloalkyl group.  The alkoxide catalyst may be derived from any primary, secondary or tertiary alcohol.  An inert solvent may be present. In Examples (1) and (3) potassium is reacted with excess tertbutanol and the resultant solution of potassium tert-butoxide is charged into an autoclave together with calcium oxide; acetylene is introduced under pressure and the product contains more than 90% tert-butyl vinyl ether.  Examples (2) and (4) are similar but use, respectively, magnesium and barium oxides in place of calcium oxide.  In Example (5) a ,a -dimethylbenzyl vinyl ether is prepared from a ,a -dimethylbenzyl alcohol by the method of Example (1); a comparative example omits the calcium oxide.  Other specified alcohols are triphenyl methanol, 1,1-dimethyln-butanol, 1,1-dimethyl (p-methylbenzyl) alcohol, 1-methyl-cyclohexanol, dihydro-a -terpineol and 1,1,2,2-tetramethyl propanol.
Patent GB-838391-A (GB)
Title: Improvements in or relating to quick-action electrical switches and actuating devices therefor
Inventor: KELLEIGH WALDO JAMES
IPC: H01H21/44
Filed: 1956-11-30
Abstract: 838,391. Snap-action switches. ELECTRICAL APPARATUS CO. Inc. Nov. 30, 1956, No. 36673/56. Class 38 (5). In a snap-action switch employing a frame F with tension members f1, f2, and a bent-over end ff forming a recess for a compression member 5, either or both the pivots ps, pf, Fig. 6, are resilient so as to be movable towards one another as the assembly moves across the deadcentre between contacts L3, L4 when actuated by a member L1 or L2. Alternatively, Fig. 3, the tip of the assembly may engage contacts when one or other of two press-buttons 311, 312 acts on the compression member s. As shown, button 311 has been depressed to snap the frame from a lower contact 112 to an upper one, the reverse movement being effected when button 312 is pushed. The buttons may have markings to show which is unoperated. Fig. 11 shows a switch which is operated by the stud 49 of a timer according to Specification 679,596, which moves a limited distance counter-clockwise to change the switch from contact L4 to contact L3 and then reverses to restore the switch to contact L4. The pivot ps is M-shaped to provide limited up-and-down as well as sideto-side movement, whereas pivot pf provides limited up-and-down movement. The part ff engages the crotch 71.2 of an operating cam 71 pivoted at 72 and having wings 71.11 and 71.12 co-operating with adjustable screws 75.1 and 75.2. Movement of stud 49 in direction a brings it against operating surface 61.1 of the cam, and in the direction b against surface 61.2, the latter being on a cam part 62 which is keyed to, so as to be slidable in, the main part of the cam so as to adjust the interval before the return movement of the switch. The switch is also adjustable as a unit about the hub of a carrierdisc (Fig. 9, not shown) and the stud 49 is carried on a rotatable disc concentric with the carrier disc.
Patent GB-368378-A (GB)
Title: Improvements in or relating to windings for electrical apparatus
IPC: H01F27/28
Filed: 1930-12-05
Abstract: 368,378. Transformers &c. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.- (Assignees of Cole, H. L. ; 260, Case Avenue, Dann, W. M. ; 54, Hall Avenue, and Brown, R. L. ; 132, Woodrow Street, all in Sharon, Pennsylvania, U.S.A.) Dec. 5, 1930, No. 36692. Convention date, Dec. 20, 1929. [Class 38 (ii).] To reduce eddy currents within the conductors of transformer and like windings due to leakage flux, the conductors are sub-divided in a direction transverse to axis of the windings. Fig. 4 shows a shell-type transformer in which groups of high voltage coils 23 .. 31 are interleaved with groups of low voltage coils 14 .. 22, the conductors of each coil being divided in a direction transverse to the axis of the coil into elements insulated from each other throughout the depth of the coil but connected in parallel at the ends. In order to equalize current in the two conductor elements, the latter are transposed in the centre of each coil. Alternatively, transpositions are made between each pair of coils as indicated in Fig. 5 in which the upper conductor element in the upper of a pair of coils is connected to the lower conductor element in the lower coil and vice versa. In another arrangement, Fig. 6, the upper conductor elements are connected in series throughout the whole series of coils, the lower conductor elements being similarly connected, and the two being connected in parallel at the ends of the winding. Thus the conductors are virtually transposed at the centre of the winding since the conductors further from the centre in the upper half of the winding are connected in series with those nearer the centre in the lower half and vice versa. The conductor elements may be taped up in pairs for winding or in groups of more than one pair. Alternatively, conductor elements of special shapes interlocking to form a single rigid conductor with insulation between the elements as shown in Fig. 11 may be used.