baber/WOPTO huggingface dataset:
Patent GB-392941-A (GB)
Title: Improvements in or relating to methods of synchronising the sectional drives of a multi-electric motor driven machine
IPC: H02P5/68
Filed: 1931-11-26
Abstract: 392,941. Maintaining equal speeds of motors. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Nov. 26, 1931, No. 32835. Convention date, Nov. 26, 1930. [Class 38 (iii).] In a sectional drive such as described in Specification 391,239, in which synchronism is effected bv means of asynchronous machines 4, 5, 6 connected in parallel on their stator and rotor sides, and in which at inching speed one of the synchronizing machines 5 is driven by an auxiliary motor 7, control means are provided'whereby before the normal speed'drive is started, firstly the synchronizing machines may be connected up, and secondly, one of them 5 may be rotated slowly by the auxiliary motor 7. Upon closure of a " start " button 19, relays 8, 9, 12, 13 close, the relay 12 connecting the machines 4, 5, 6 to the supply RST, and the relay 13 energizing the auxiliary motor 7. If normal speed drive is desired a "run" button 20 is then closed whereupon relays,14, 15, 16 close, the relay 16 connecting up the main driving motors 1, 2, 3. The auxiliary motor drive is through an overtaking coupling 11, and a contact 18<1> is provided for de-energizing the relays 8, 13 and disconnecting the auxiliary motor at a certain stage of the speed control. To bring the machine to rest either from normal speed or auxiliary drive a "stop" button 18 is opened thereby de-energizing relays 14, 15, 16, 12, or 8, 9, 13, 12. In each case the machines 4, 5, 6 remain connected for a time sufficient to allow the machine to come to rest.
Patent GB-806821-A (GB)
Title: Improvements relating to centrifugal machines
Inventor: HALLITT WILLIAM
IPC: D06F49/06
Filed: 1956-10-29
Abstract: 806,821. Centrifugal strainer separators. BROADBENT & SONS Ltd., T. Aug. 15, 1957 [Oct. 29, 1956], No. 32870 /56. Class 46. [Also in Group XXXII]  The spindle bearing housing d of a centrifugal strainer separator driven from above may pivot during loading of the basket in a resilient ring p ; it is constrained against moderate swinging movement by a resilient ring f, on which it is supported, and against excessive swinging movement by a seating ring g movable on a friction surface h in a fixed member i, the ring g being in turn constrained by an outer resilient ring j, the constraint exerted by the latter being adjustable by nuts k acting through a further ring n. In the equivalent arrangement for a machine driven from below the ring p is below the assembly f, g, j, n. The ring p may be replaced by a spherical bearing or a barrelled bush. According to the Provisional Specification the horizontal part of the member g may be shaped to an arc of a circle with its centre at the point about which the spindle swings, in service. The resilient rings f and j may be replaced by hydraulic, pneumatic or spring arrangements. The spindle may be driven through a flexible coupling, and there may be means between the bearing housing and a fixed member at a position adjacent to the bearing to provide a pivot point about which the spindle swings.
Patent GB-1282451-A (GB)
Title: A process for cutting off slugs from the end of a work piece
Inventor: SHAFER DONALD S
IPC: B23D59/02
Filed: 1969-05-30
Abstract: 1282451 Sawing WATKINS MFG CO 30 May 1969 32883/69 Divided out of 1171285 Heading B5L A process for cutting off slugs from the end of a metallic workpiece comprises rotating the workpiece on its axis providing at least one circular sawtooth cutter adjacent the workpiece having its axis parallel with the axis of rotation of the stock, the rotation of the workpiece and tool having a high differential speed, and effecting a feed movement of the cutter relative to the workpiece for cutting off the end of the workpiece so that the cutter removes 0À000058 to 0À00000021 cubic inches of workpiece-per tooth strike. The apparatus for carrying out the process is as described in Specification 1,171,285.
Patent GB-641571-A (GB)
Title: Improvements in and relating to the manufacture of basic esters
Filed: 1947-12-15
Abstract: Basic esters of a  : a -diaryl-a -alkoxyacetic acid basic esters of the formula <FORM:0641571/IV (b)/1> wherein R is an alkyl residue, R2 is an alkyl group and R1 is a phenyl ring are prepared by treating a ,a -diphenyl-a -alkoxy acetic acids or their salts with a hydrogen halide, sulphuric acid, or toluene-sulpho acid ester of an amino alcohol.  In examples: (1) a  : a -diphenyl-a -methoxyacetic acid reacts with b -ethyl chloride-diethylamine in absolute alcohol in the presence of a small quantity of sodium to give diphenylmethoxy acetic diethylaminoethyl ester; (2) a  : a -diphenylethoxyacetic acid reacts with b -ethylchloride-diethylamine as in (1) to give a  : a -diphenylethoxy acetic acid diethylaminoi ethyl ester, and (3) diphenyl propoxyacetic acid reacts with ethyl chloride p diethylamine as in (1) to give diphenylpropoxyacetic acid diethylaminoethyl ester; the diphenylisopropoxyacetic acid diethylaminoethyl ester and diphenylbutoxyacetic acid diethylamino-ethyl ester may be similarly obtained. Diphenylpropoxyacetic acid is obtained by reacting diphenylchloroacetic acid ethyl ester with sodium and propyl alcohol and saponifying the resultant diphenylpropoxyacetic acid ethyl ester.
Patent GB-792603-A (GB)
Title: Process of and apparatus for purifying waste gases
IPC: F01N3/01
Filed: 1955-11-17
Abstract: 792,603. Treating and silencing exhausts. FUX, W. Nov. 17, 1955 [Nov. 19, 1954; Sept. 9, 1955]. No. 32985/55. Class 7(2) [Also in Group XL(a)] Air, supplied by a funnel 6, Fig. 1, directed towards the front of a motor vehicle, passes through inclined vanes 7 to form with exhaust gases from a tube 2 a swirling mixture the air in which is ozonized as it traverses electrodes 12, 13 between which a high-voltage intermittent electric discharge is passed by an apparatus 16, the ozone causing substantially complete oxidation of the gases which may also . be ignited by sparking between the electrodes 11. 12 and which pass to silencer 15. The tube 9 is of refractory ceramic material and may be jacketed for heat dissipation. In Fig. 5 a blower supplies the air and the tube 9 is of metal and acts to earth the electrode 11, the positive battery pole and the left-hand ends of the primary and secondary coils of the apparatus 16 also being earthed; the blower may be driven by the engine ignition dynamo, and the apparatus 16 be replaced by the engine ignition coil. In a modification, air supplied at 33, Fig. 8, is. ozonized at 36 before mixing in a chamber 40 with exhaust gases supplied from a chamber 31 via tapering nozzles 43, the mixture then passing through tapering nozzles 45 in a refractory ceramic partition 41 which may mount igniting means 44. Reference is made to ignition of the ozonized mixture by a flame or an incandescent body, and to use of devices according to the invention as motor vehicle exhaust silencers.
Patent GB-325213-A (GB)
Title: Improvements in or relating to the shaping of the heel ends of shoe uppers
IPC: A43D8/00
Filed: 1928-11-12
Abstract: 325,213. British United, Shoe Machinery Co., Ltd., and Gouldbourn, J. Nov. 12, 1928. I r o n i n g ; uppers, machines for. - The back and sides of at least the top of the quarter of a shoe are moulded, either after the shoe is finished or before the sole is attached. In the latter ease, the middle, and, preferably. the vertical middle line, of the top of the rear end of the upper is defined by the moulding, and the back seams of the quarter and lining are flattened, especially adjacent to the top of the upper. For operation on a finished shoe, a mould 5, Fig. 1, of nickel-plated brass, shaped to " overmould " the shoe, is heated by an electric cartridge 9, and formed with a stop 7 for the top of the upper. The outer mould comprises a stout strap of hide, a sponge rubber lining tapered at its ends, and a shoe contacting layer of soft leather. This mould is carried by links 43 pressed apart by a Spring and pivoted to a lever 15, guide links 45 being provided. The other end of the lever is slotted to engage a roll on a fixed pivot 13, the end of the slot being normally pressed against the roll by a spring 23 adjusted by a screw 27 threaded through the lever. An operating handle 33 has a nose 34 for depressing the lever and closing the moulds on the upper, stops being provided for the extreme positions of the handle. When the upper is fully compressed, the spring 23 yields and the end of the slot in the lever 15 leaves its roll. For treating an upper, after mulling or tempering as described in Specification 316,687, the mould 105, Figs. 3 and 4, slopes downwardly and rearwardly to facilitate the positioning of the flabby upper by the operator. The top of the mould is shaped as a narrow ridge, widening from about t in. at the rear to “ in. at the front. The outer mould comprises a rubber block 122 housed in a metal casing 120 pivoted direct to a lever 115 similar to the lever 15 but operated by a treadle rod 140 pivoted to an arm on a handle 133 similar to the handle 33. Banks of, say, half-a-dozen units mav be arranged side by side under the control of a single operator. Specifications 262,799 and 276,371 also are referred to.
Patent GB-771766-A (GB)
Title: Improvements in and relating to vibrating screeds
Inventor: KIRKHAM REGINALD HERBERT HONLE
IPC: B28B1/093
Filed: 1954-11-16
Abstract: 771,766. Vibrating screeds. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 16, 1955 [Nov. 16, 1954], No. 33176/54. Class 107 A vibrating screed is provided with lifting means with which it can be lifted and moved sideways on to the next section to be screeded. The lifting means are preferably jacks with larg area feet to rest on the screeded concrete, but they may be arranged to bear on the forms or the ground beyond the forms. The screed 11 has pneumatic vibrators 13 and the jacks 21 are also pneumatic, being supplied by the same source of air as the vibrators, the screed otherwise being of known construction. The jacks have a common foot 24 and are pivoted at 19 to brackets 18. They are double acting, being extended by air in pipes 28, and retracted either by air in pipes 29 or by springs. A control 26 for the jack movement is fitted to the handle 12 of the screed. When an electric motor or internal combustion engine is used to drive the vibrators, they also drive pumps to provide a suitable source of hydraulic power for the jacks.
Patent GB-826670-A (GB)
Title: Improvements in chairs with tip-up seats for theatres and the like
IPC: A47C7/60
Filed: 1955-11-21
Abstract: 826,670. Tip-up seats. CAFFREY, F. Nov. 21, 1955 [Feb 21, 1955], No. 33219/55. Class 52(5) Chairs, with automatic tip-up seats and easily bolted together in rows in a hall or cinema, each comprise a back 5 detachably connected to side members 1 of sheet material and a seat 9 pivotally mounted between brackets 13 bolted at 23 to the side members and each consisting of a rectangular plate having opposite corners 17, 18 cut at 15, 16 and bent towards a third corner to provide lugs 19, 20 forming stops for the seat in horizontal and vertical positions. Obtuse-angled plates 6 are bolted or screwed to the back and side members and arm pads 3, which are reversible end to end, are secured by studs 4 to bases 2 mortised to the tops of the side members. An angle strip 10, detachably secured to each side of the seat 9 by studs 11, is bored to receive a headed pivot pin 12 which extends through the bracket. Rubber buffers 21, 22 provide abutments against which the angle strips rest in horizontal and vertical positions of the seat. Specifications 241,095 [Class 52(ii)] and 623,785 are referred to.
Patent GB-891419-A (GB)
Title: Improvements in or relating to packings for sealing together two relatively rotatable members
IPC: F16J15/44
Filed: 1959-10-01
Abstract: 891,419. Stuffing-box substitutes. NEIL, J. B. Sept. 30, 1960 [Oct. 1, 1959], No. 33264/59. Class 122 (5). A packing ring 24 between relatively rotatable members 20, 22, such as the shaft and casing of a steam turbine, is sealed to one of the members, such as the member 22, at a cylindrical surface C, e.g. by carbon rings 26, 28, so as to permit relative axial displacement between the ring and the member and is provided with axially opposite, annular sealing and throttle faces 32, 36 co-operating with corresponding faces 34, 38 on the other member 20 so that, when the faces 32, 34 are in engagement, relative rotation occurs therebetween and the faces 36, 38 are spaced apart to define a throttle orifice T. The mean diameter of the faces 32, 34 is different from that of the faces 36, 38 but approximately equal to the diameter of the surface C. Both packing ring 24 and casing 22 are formed in halves bolted together. Steam leaking past the carbon ring 28 is drawn off at 42 whilst steam leaking past the sealing faces 32, 34 and subsequently condensed is thrown outwardly by collar 44 through radial holes 46 to be drawn off at 42. In operation, when the sealing faces 32, 34 are in contact the pressures on faces A and B of the ring are equal; if the sealing faces part slightly steam flows through orifice T and the pressure on face A becomes greater than that on face B urging the sealing faces into engagement again. Various other arrangements are described in which the packing ring is non-rotatably mounted with respect to either the casing or the shaft.
Patent GB-745498-A (GB)
Title: Improvements in or relating to radio direction finders
IPC: H01Q25/02
Filed: 1953-11-30
Abstract: 745,498. Radio navigation. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Nov. 30, 1953 [Nov. 29, 1952], No. 33278/53. Class 40 (7). Means for determining the angular position of a first point with respect to a second point and a reference axis therethrough comprises apparatus at the second point generating sequential overlapping beam radiation patterns providing equal signal strengths along the said axis and a receiver at the other point determining the ratio between the difference of the signal strengths received and their sum. The Specification explains that this ratio bears a linear relationship to the angular deviation from the equisignal line over a considerable angle. In one embodiment a continuous or pulsed wave is transmitted which is amplitude modulated at a frequency <SP>1</SP>/T0 which is small compared with the lobe switching frequency <SP>1</SP>/T. At the receiver the signals are amplified by a wide band amplifier 1 and fed to filters 2 and 3. Filter 2 passes signals within the frequency band <SP>1</SP>/T<SP>1</SP>/T0 which are fed to amplifier 4 having a coefficient of amplification proportional to the voltage applied over the line from unit 5. Its output is indicated on meter 6 which gives an indication of the angle required. Filter 3 passes signals of frequency <SP>1</SP>/To which are amplified at 7 and rectified at 5 to control the amplification of unit 4. The control signal from the rectifier may also be fed back to control the gain of amplifier 1 as shown by the dotted line 8. In another embodiment wherein a continuous wave is transmitted this is reduced to an intermediate frequency at the receiver. The resultant signal is then detected once to provide a lobe switching frequency signal which is separated to provide the difference frequency signal required, and detected again to provide a mean amplitude signal proportional to the sum signal required. As in the receiver of Fig. 5 the sum signal may be used to control the gain of an amplifier through which the difference signal is fed to the indicator.
Patent GB-466220-A (GB)
Title: Improvements in or relating to the construction of fives courts, rackets courts, squash-rackets courts and the like
IPC: E04H3/14
Filed: 1935-12-02
Abstract: 466,220. Squash rackets and like courts. COLT, G. H. Dec. 2, 1935, No. 33300. [Class 20 (i)] Fives courts, squash rackets, and like courts, are formed wholly or partially with transparent walls to allow spectators to view the play from without but which are more or less opaque to the players within. The panels for the walls are formed of compound glass sheets 10, unbreakable or safety glass, celluloid, or like transparent substances, having one or both faces roughened, stippled, painted or provided with frosted areas 12 to render the panels partially opaque. The outer surface may be covered with mesh screens 3 and the screens may be enclosed by further glass sheets 14 ; sheets of perforated metal may be used as screens. In certain cases opaque blinds may be used to screen the court when the exterior is more brilliantly lit than the interior. The panels are fitted together to provide continuous playing surfaces free from obstructions and are secured by sunken bolts 18 to T-shaped frame bars 16 which may be supported by inclined struts 17.
Patent GB-492631-A (GB)
Title: Improvements in producing plain warp knitted goods provided with rubber warp threadson a warp loom having only one row of needles
IPC: D04B21/00
Filed: 1937-12-02
Abstract: 492,631. Knitted fabrics. SCHONFELD, P. Dec. 2, 1937, Nos. 33384 and 33385. Convention dates, Feb. 13 and Julv 16. [Class 74 (ii)] Relates to methods of producing elastic warp fabrics stretchable in two directions at rightangles. Fig. 1 shows a lapping diagram, 1 being the ground threads and 2, 3 rubber threads. The group 2 (one thread only being shown) is racked continually in opposite directions to the threads 1, while the group 3 is racked in the same direction as the groups 1 or 2. In the latter case the groups 2 and 3 are lapped different distances. The groups 2 and 3 stand behind the group 1 and in front of a group of filler threads 4 racked similarly to the group 1. Fig. 3 shows a lapping diagram for ground threads 1, filler threads 4 and a single set of rubber threads 2. In this case the threads 2 are in rear of the threads 1, 4 and the threads 2, 4 are given unsymmetrical laps.
Patent GB-833770-A (GB)
Title: Hollow turbine or compressor blades
Inventor: PERKINS FRED
IPC: F01D5/18
Filed: 1956-11-01
Abstract: 833,770. Turbine and compressor blades. DE HAVILLAND ENGINE CO. Ltd. Oct. 14, 1957 [Nov. 1, 1956], No. 33447/56. Class 110 (3). A hollow turbine or compressor blade is provided with a plurality of internal channels through which a fluid medium can be passed, for example for cooling the blades, a distributer block being provided in the root portion of the blade, the distributer having a plurality of passages communicating on the one hand with different internal channels in the aerofoil portion of the blade and on the other hand with a common chamber in a blade-supporting member to which the fluid medium is supplied, the channels being defined in part by at least one insert which is not part of the distributer block but is at least partly supported thereby, the distributer block also striving to retain the blade in the blade-supporting member. The turbine rotor blade shown is formed from a thin-walled metal tube to provide an aerofoil portion 10 and two tongue portions 13, 14 which are tranversely corrugated. An insert 15 comprising a hollow sheet metal body with longitudinally-corrugated sides 16 is inserted loosely into the hollow interior of the blade so as to define therewith a series of longitudinal cooling passages 17a, 17b, 17c, 17d. The lower end of the insert is formed to provide a stem 18 and a root portion 19. The tongue portions 13, 14 of the blade are entered axially into an open-ended groove 21 formed at the periphery of the rotor disc, the sides 22, 23 of the groove being shaped to correspond with the corrugations of the tongue portions. A distributer block is then inserted into the space between the two tongues 13, 14 to hold the blade in position. The distributer block is provided with an open-ended groove 29 in its upper surface, the groove being shaped to correspond with the shape of the root portion 18, 19 of the inert 15 so that as the distributer block is entered the root of the insert is engaged in the groove 29. A pin 30 is then entered into the root 19 whereby the insert is secured in position. The distributer block is formed with a series of passages 25, 26, 27, 28, the passages 25 communicating with the passages 17a in the aerofoil portion, passages 26 communicating with passages 17b, and passages 27 and 28 communicating with passages 17c, 17c, respectively. Cooling fluid is supplied to a groove 31 formed at the bottom of the blade-mounting groove 21, the fluid then flowing through the passages in the distributer block. The cooling fluid may discharge at the open tip of the blade and through apertures formed along the trailing edge. The insert may be formed in two halves with rectangular-shaped corrugations instead of triangular, as shown in Fig. 5. The distributer block may be of either rectangular, parallelogram or arcuate shape in cross-section normal to the axis of the blade.
Patent GB-968761-A (GB)
Title: Improvements relating to root crop harvesting machines
IPC: A01D33/00
Filed: 1962-08-31
Abstract: 968,761. Root-crop harvesters. F. A. STANDEN &- SONS Ltd., and P STANDEN. Aug. 28, 1963 [Aug. 31, 1962], No. 33622/62. Heading A1F. A root-crop harvester comprises lifting shares 2 disposed at the leading end of an upwardly and rearwardly inclined elevator 3 and the passage of the roots on to the elevator is assisted by rotary flail-elements 6 comprising a plurality of resilient arms having eyes mounted on pivot-rods 7 which extend parallel to a power-driven flail-shaft 8. Each pivot-rod 7 carries a group of three arms arranged side-byside so as to be freely swing- able into a radially-extending position during rotation of the flail-shaft. A pair of discs 12 are mounted freely on the flailshaft to flank the flails and ensure that the crop is thrown rearwardly on to the elevator. The elevator is an endless linkweb of openwork construction and a single stationary run 4 of link-web is arranged to sag over its upper run to retain the crop. Alternatively, the elevator may comprise two super-imposed link-web conveyers. The elevator and flailshaft are driven from the power-take-off of the towing tractor. Specifications 662,804, 842,422 and 842,423 are referred to.
Patent GB-360195-A (GB)
Title: Improvements relating to feeding devices for animals
IPC: A01K5/01
Filed: 1930-11-08
Abstract: 360,195. Feeding - appliances for animals. THOMAS, H. B., Grangeside, Pinsley Road, and ALEXANDER & DUNCAN, Ltd., Lion Works, both in Leominster, Hertfordshire. Nov.' 8, 1930, No. 33664. [Class 5 (ii).] The cover g of a sheep rack is supported at its ends by brackets or arms d carried by pivot pins f extending from metal plates e secured to the ends of the rack. Each h plate has formed integral with it a pair of stops h forming abutments for the cover in the raised and the closed positions respectively. The plate carrying the pivot may be separate from the plate carrying the stops.
Patent GB-878591-A (GB)
Title: Improvements in or relating to suction cleaners
Inventor: CARPENTER KENNETH
IPC: A47L9/04
Filed: 1959-10-05
Abstract: 878,591. Suction cleaners. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 30, 1960 [Oct. 5, 1959], No. 33682/59. Class 8(1). A suction cleaner of the kind having a main rotary brush stock 2 with brushes 3, 4, 5 and 6 helically disposed with respect to the axis of rotation operating over a swept width less than the overall width of the cleaner casing or having auxiliary brushes 9 and 10 set in a synthetic plastic material and housed in brush clips one at either side of the casing to extend the total swept width over which the cleaner is operative. The cleaner which has front and rear rollers has its rear rollers vertically adjustable and likewise the rotary brush shaft 24 by means of the eccentrics 25.