baber/WOPTO huggingface dataset:
Patent GB-704041-A (GB)
Title: Improvements relating to elastic shaft couplings
IPC: F16D3/78
Filed: 1951-11-28
Abstract: 704,041. Flexible couplings. DAIMLER-BENZ AKT.-GES. Nov. 28, 1951 [Nov. 28, 1950], No. 27915/51. Class 80 (2) In a flexible coupling comprising a pack of flexible rings 2 secured by bolts 15, 16 to arms 11a, 12a on coupling members 11, 12 splined to shafts 1a, 1, centring means comprises a ball member 8 slidable and rotatable on an extension 9 of shaft 1a and engaging a two-part socket member, one socket part 4b being formed in the hub 4a of a disc 4 secured by the bolt 16 to the member 12 while the other socket part 5 is pressed against the ball by a spring 6 abutting against a closure disc 7 in. the hub 4a. An elastic ring 17 is interposed between the end of hub 4a and a nut 10 threaded on the extension 9. The hub 4a contains grease for lubricating the ball-and-socket joint.
Patent GB-1202290-A (GB)
Title: Regulated power supply
Inventor: KNIGHT MARK BERWYN
IPC: H04N3/185
Filed: 1968-06-12
Abstract: 1,202,290. EHT generators. RCA CORPORATION. 12 June, 1968 [12 June, 1967], No. 27988/68. Heading H2F. In a rectified flyback type of EHT generator, the output voltage is regulated by means of a variable loading device comprising a rectifier 40 capacitor 41 and variable conductivity device 44 connected across part of the inductive winding 32a, the conductivity of device 44 being varied by a voltage sensing means 45 in dependence on the EHT voltage. As described, the line output stage of a colour television receiver comprises two parallel connected transistors 21a, 21b supplying deflection coils 25 via S-shaping capacitor 26. A damper diode 34 and retrace capacitor 35 are coupled to an auxiliary winding 32b on the output transformer 32. Electrostatic focusing provided by winding 32c and rectifier 36. The EHT winding 32d is added to the focus voltage and its output is rectified at 38. The flyback pulses induced in winding 32e are dependent on the variation of EHT voltage due to changes in beam current of tube 15 and are rectified at 46, the resulting voltage being adjustable at 49 and used to control the conductivity of transistor 44 which imposes a variable loading on transformer 32 so as to regulate the EHT voltage. Auxiliary D.C. supplies are available at 29, 30, 31 for other parts of the receiver. A network 33 is connected in the emitter circuits to provide centering current for deflection coils 25. Waveforms (Fig. 2, not shown) indicate that the variable loading is achieved by varying the charging time of capacitor 41 through rectifier 40.
Patent GB-1116071-A (GB)
Title: Micro-wave bridge for spectrometers with paramagnetic electron resonance
Inventor: HEUER KLAUS
IPC: G01R33/345
Filed: 1965-07-01
Abstract: 1,116,071. Paramagnetic resonance detector. CARL ZEISS JENA VEB. July 1, 1965, No.27970/65. Heading G1N. A sample-containing cavity resonator 1, Fig. 1 and a balancing (reference) cavity 5 are coupled, via a hybrid coupler 2, with a waveguide 3 supplying microwaves from a generator, and also with a waveguide 4 connected to a measuring and indicating device, the second cavity 5 being coupled to the coupler 2 by means of a waveguide 8 containing a phase shifter 6 which adjusts the electrical length from the second cavity to the coupler 2. The cavity 5 has its frequency and Q adjusted by means of pins 9, 10 respectively, the latter being hollow and coated with attenuating material. A circular diaphragm 7, Fig. 2, (not shown) couples the second cavity (5) to the waveguide 8, and the coupling coefficient is adjusted by rotating the cavity (5) about an axis perpendicular to the diaphragm.
Patent GB-188908-A (GB)
Title: Improvements in or relating to jigging conveyors and screens
IPC: B65G27/00
Filed: 1921-10-22
Abstract: 188,908. Redfern, T. Oct. 22, 1921. Jigging conveyers. - In jigging conveyers or screens the fixed rail supports 3 for the rollers 5 are above the centre of gravity of the trough 1, and on the hubs 7 of the rollers rest bearing surfaces G provided on brackets 2 which extend upwardly from the trough. Alternatively, the bearing surface of each bracket may be the upper edge of the slot 9. The bearing surfaces are preferably curved or inclined, and the rail supports may be curved or inclined similarly. The conveyer is reciprocated by known link motion comprising a frame 11 pivoted to a connecting rod 13 from a crank 10, to the conveyer trough, and to an anchoring link 16. The length of the reciprocations imparted to the trough is varied by altering the length of the link 16. This is preferably effected by forming the link in two parts and connecting them by a member 19 whose ends are oppositely threaded. In a modification each bracket 2, Fig. 4, is of inverted U- shape and has two bearing surfaces 6.
Patent GB-735890-A (GB)
Title: New pyrimidine derivatives and process for their production
Filed: 1952-11-07
Abstract: The invention comprises amoebicidal compounds of the general formula <FORM:0735890/IV (b)/1> and their salts, where A is a divalent aliphatic chain containing 2 to 6 carbon atoms.  They may be prepared by condensing 2-amino-4-chloro - 5 - (41 - chlorophenyl) - 6 - ethyl pyrimidine or its N-acetylamino derivative with a diamine of the formula NH2-A-NH2, preferably by refluxing 2 mol. proportions of pyrimidine reactant with 1 mol. proportion of the diamine in a solvent such as phenol.  Specified amines are ethylene diamine, 1 : 4-diamino-butane and hexamethylene diamine, leading to the production of N,N1-1 : 2 - di-(21-amino - 51 - p - chlorophenyl - 61 - ethyl - 41-pyrimidyl) amino-ethane, -butane, and -hexane, respectively. Specification 730,472 is referred to.
Patent GB-1206819-A (GB)
Title: Improvements in waterstops
Inventor: FIELD-SMITH JOHN FIELD
IPC: E04B1/68
Filed: 1968-06-13
Abstract: 1,206,819. Waterstops. EXPANDITE Ltd. 12 May, 1969 [13 June, 1968], No. 28236/68. Heading E1B. A P.V.C. or rubber waterstop 1 for concrete walls has blind holes 4 formed in dovetail ribs 2 and 3 through which galvanized steel rails pass to secure the waterstop to shuttering before concrete is cast.
Patent GB-169629-A (GB)
Title: Improvements relating to spirit decanters and similar receptacles for liquids
IPC: B65D55/14
Filed: 1920-10-06
Abstract: 169,629. Grinsell & Sons, Ltd., J., and Grinsell, J. R. H. Oct. 6, 1920. Stoppers secured by key locks.-On a stopper h of the kind adapted to be rotated so that radial projections e, f thereon engage with hooked lugs c, d on a ferrule a surrounding the neck of a bottle, an arm is provided for supporting a staple i formed with a camend i<2> and with a recess i<3> into which a vertically-disposed spring- actuated bolt b<1> forming part of a lock b on the ferrule a can enter when the projections e, f are in effective engagement with the lugs c, d. Alternatively, the projections e, f may be on the ferrule and the lugs c, d on the stopper.
Patent GB-711334-A (GB)
Title: Improvements in grinding in a wet mill
IPC: B02C17/06
Filed: 1952-11-11
Abstract: 711,334. Wet grinding; ball mills. SMIDTH & CO. AKTIESELSKAB, F. L. Nov. 11, 1952 [Dec. 7, 1951], No. 28407/52. Class 59 In a wet grinding mill comprising successive compartments I to IV, to the first, I, of which dry material and liquid are supplied from a hopper 4 and pipe 5 respectively, and from the last, IV, of which the final slurry is discharged through a pipe 7, further liquid is supplied through a pipe 10, gland 11, and pipe 12 to the last compartment or compartments to the amount necessary to form a final slurry which will flow, but not in substantial excess of that amount. A valve 18 in the pipe 10 is controlled electrically by means of a viscometer 13 the rotor of which dips into a chamber 14 through which a fraction of the final slurry passes. A valve 6 in the pipe 7 is controlled by means of a microphone 19 which detects the noise of grinding in compartment I. In another form, Fig. 1 (not shown), the automatic means for controlling the valve 6 are omitted.
Patent GB-340214-A (GB)
Title: Improvements relating to metal-extrusion presses
IPC: B21C27/00
Filed: 1929-09-19
Abstract: 340,214. Squirting. HYDRAULIK, GES., 72, M³lheimerstrasse, Duisburg, and SCHLENSTEDT, O., 64, Hundsbuschstrasse, M³lheim, Ruhr, both in Germany. Sept. 19, 1929, No. 28463. Convention date, Nov. 24, 1928. [Class 83 (iv).] The container 2 of a squirting press and its crosshead 1 are mounted on the base 3 by means of an extension 4 coaxial with the container and on that side of the head 1 remote therefrom thus avoiding lack of alignment due to expansion. The extension may be rectangular or cylindrical and in this case it is prevented from rotating and if desired adjusted by keys 7 or wedges 8, Fig. 2. The extension may be integral with the head 1 or fixed thereto by bolts 18, Fig. 1, insulating material 10 being interposed. The bearing 5 may be provided with a detachable cover secured by bolts through lugs 9, Fig. 2.
Patent GB-635351-A (GB)
Title: Improvements in beam deflecting circuits for cathode ray tubes
IPC: H04N5/12
Filed: 1946-09-24
Abstract: 635,351. Automatic frequency-control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 24, 1946, No. 28499. Convention date, Sept. 24, 1945. Drawings to Specification. [Class 38 (iv)] [Also in Group XL (b)] The subject-matter of this Specification is substantially the same as that described in Specification 621,793, but the claims differ and relate to the use of a thermionic valve and reactance connected in series across the tuned circuit of the oscillator, the reactance being more or less effective correspondingly as the valve bias is varied.
Patent GB-437067-A (GB)
Title: Gear for loading and unloading lorries with loads of timber in bulk, instead of piece by piece
IPC: B65G63/00
Filed: 1934-10-05
Abstract: 437,067. Loading and unloading lorries. SCARBOROUGH, W. H., 29, Coolhurst Road, Crouch End, London. Oct. 5, 1934, No. 28532. [Class 78 (iii)] A machine for handling long loads such as timber in bulk, whereby a vehicle can be completely loaded or unloaded in one operation, comprises four standards 1 let into the ground and carrying a pair of cross-bars 2 in slots 5. Hydraulic or screw jacks 9 supported on platforms 7<a> on each standard are used to raise the ends of the cross-bars independently. To load a vehicle, the timber is stacked by hand on the cross-bars in an inclined position as shown, being confined laterally by the members 12 connected to sleeves 11 sliding on the standards. The vehicle is then run under the load and the jacks are manipulated to lower the cross-bars until the timber rests on the cross bearer supports of the vehicle. The cross-bars can then be removed and the vehicle driven away. To unload a vehicle, the cross-bars are removed and then re-inserted under the load after the vehicle has been run in. Elevation of the cross-bars then takes the weight of the load and elevates the latter clear of the vehicle. The cross-bars can be removed from one post, and the other post swung round through 90‹ when not in use.
Patent GB-1086214-A (GB)
Title: Apparatus for, and method of, treating tea
Inventor: HOPPER FREDERICK AISTON
IPC: A23F3/06
Filed: 1963-07-19
Abstract: 1,086,214. Screening apparatus. MARSHALL'S TEA MACHINERY CO. Ltd. July 20, 1964 [July 19, 1963], No. 28591/63. Heading B2H. Tea from a drying apparatus is received from a chute 20 on to a foraminous endless band 1 of a conveyor through which a current of air is passed for blowing dust from the tea, the dust-laden air being directed to a cyclone 18 for separating the dust therefrom. The conveyor band may be horizontal or inclined and may be made of wire mesh. As shown, the air passes downwardly through the endless band being sucked out of an open top chamber 10 between the upper and lower flights of the conveyor by means of a fan 16. A hood 21 provided with water-cooled pipes 22 may be arranged above the conveyor in order to provide cool air for cooling the tea. Alternatively, the air may pass upwardly through the conveyor band, a suction hood being placed above the band for that purpose. Instead of sucking air through the conveyor band, a pressurized system may be used for creating the air flow. The tea is discharged on to a chute 24. A brush 25 removes tea clinging to the lower flight of the band 1.
Patent GB-960778-A (GB)
Title: Sun-bathing equipment
IPC: E04H15/00
Filed: 1962-07-26
Abstract: 960,778. Laminated reflectors. P. J. TRAFTON. July 26, 1962, No. 28795/62. Drawings to Specification. Heading B5N. A sunlight reflective flexible sheet material has an embossed transparent synthetic plastic layer e.g. polyethylene terephthalate, and a multi-faceted metallic sunlight-reflective surface which faces towards the transparent layer for reflecting sun's rays transmitted thereto through said layer, back through and out of said layer. A protective backing of a vinyl synthetic plastic is given to the metallic layer. The metallic layer may be particles of aluminium deposited on to the under surface of the transparent layer.
Patent GB-173355-A (GB)
Title: Improvements in wrenches
IPC: B25B13/22
Filed: 1920-10-12
Abstract: 173,355. Wood, J. R. Oct. 12, 1920. Pivoted-jaw wrenches; sliding-jaw wrenches.- In wrenches of the kind wherein the loose outer jaw is provided with a shank having ratchet &c. teeth, a toothed locking-member between the handle of the wrench and the shank of the loose jaw is pressed into locking engagement with the latter by a spring. The wrench comprises a handle A with a jaw A<1> formed integral with it, a loose jaw C with a ratchet-toothed shank C' passing through an inverted U-shaped link B pivoted at b to the handle member A, and n . spring-pressed locking-member D formed with teeth d commencing some distance from its front end and with recesses d<1> on its edges to take the side straps of the link B. The fixed jaw A<1> is formed with a rounded protuberance a<1> engaging a. like recess d<2> in the underside of the locking- member D, enabling the latter to be given a pivotal movment by depressing its back end against the pressure of the spring E for releasing its locking teeth d from the teeth c on the shank of the loose jaw. The sides of the jaw A<1> are recessed round the pivot b so that the two ends of the link B are flush therewith.
Patent GB-225051-A (GB)
Title: Improvements in desks for school and like uses
IPC: A47B39/04
Filed: 1923-11-17
Abstract: 225,051. Mann, Egerton, & Co., Ltd., and Gibbs, A. Nov. 17, 1923. School desks; desk frames; foot-board attachments.-A school desk comprises frame members which are made from bar metal and include an L-shaped portion, the upright stem of which supports the seat, and an inverted U-shaped portion which stands on the base of the L-shaped portion and provides a support for the desk. The metal bar may be of angle or T-section and the frames may be built up of lengths or may be formed with the seat support 1, base 2, and inverted U-shaped desk support 3, 4, 5 in one piece by bending the bar, the flanges being cut away to form neat joints at the corners 9. When angle section bar is used, the flanges are also cut away at the joints to form a flush surface on the outside of the frame. Corner stays 11, 13 may be provided for strengthening the structure, and a foot-board 19 may be carried on the stays 13. The seat 21 is supported by a hinged bracket 16, 17 bolted to the uprights 1, the ends of which are slightly bent and tapered to provide a seating for the back rest 18.
Patent GB-382058-A (GB)
Title: An improved method of securing rolling rings on hollow bodies or the like
IPC: B21D51/20
Filed: 1931-10-20
Abstract: 382,058. Rolling rings for casks &c. VEREINIGTE STAHLWERKE AKT.-GES. 69, Breitestrasse, Dusseldorf, Germany. Oct. 20, 1931, No. 29102. Convention date, Dec. 11, 1930. [Class 21.] Rolling rings are secured between folds or collars in the walls of hollow bodies such as casks, by heating the ring then forcing it over one of the collars and shrinking in position. A ring 3 of I-section is secured in this-manner between previously produced leads 2, made by rolling or the like in a hollow body 1. Specification 8440/06, [Class 21, Casks &c.], is referred to.
Patent GB-1180803-A (GB)
Title: Improvements in or relating to Heat Exchangers for Cooling Electrical Apparatus.
IPC: C25D21/02
Filed: 1967-06-23
Abstract: 1,180,803. Transformers. UDYLITE CORP. 23 June, 1967 [23 June, 1966], No. 29158/67. Heading H1T. A cooling system for a transformer enclosure 8 comprises a blower 40 which blows cooling air from an inlet 26 over the electrical components to an outlet 28, and a removable housing 80 which is bolted to the enclosure when additional cooling thereof is required, the housing including at least one heat exchange module having a tube through which cooling water is passed and the air exhausted from the enclosure 8 being passed over the or each module and returned to the enclosure.
Patent GB-647731-A (GB)
Title: Improvements relating to boxes
IPC: B65D5/28
Filed: 1947-10-31
Abstract: 647,731. Boxes. SKRINE, H. H., and DRING, Ltd., J. Oct. 31, 1947, No. 29179. [Class 18] A partitioned box, e.g. for live chicks, has a collar 13 in each compartment to form a cornerless housing communicating with the exterior, a lid 2 with perforations 20 at positions corresponding to the corners of the compartments outside the collars and extensions or ribs 11 on the partitions arranged to project through slots 12 in the lid to support a superimposed box so that an air space is provided between the boxes for ventilation purposes. As shown, the collars have air holes 15 and diametrically opposed recesses 16, the box body has perforations 21 and each compartment has an individual cover flap 17 hinged to an adjacent rib 11 and formed with holes 19 to register with the perforations 20 in lid 2.
Patent GB-1501930-A (GB)
Title: Electrical resistance heaters
IPC: H05B3/00
Filed: 1975-07-11
Abstract: 1501930 Electric resistance heating LIEBELT PALMER & CO Ltd 20 Aug 1976 [11 July 1975] 29183/75 Heading H5H A helically coiled wire heating resistor 5 is wound upon an insulating corrugated former 3, enclosed within a mechanically protecting and electrically insulating body. The protecting body may be sheets of insulating material 2, 4 or an embedding mass. A rigid outer casing may be provided. Former 3 is corrugated, 7, for flexibility and notched 8 to locate the resistor. Former 3 and plates 2, 4 may be of mica, asbestos, asbestos compound or ceramic. The embedding material may be a ceramic or magnesium oxide. The casing, of stainless steel or mild steel or brass, may be formed as a bobbin and closed by an outer plate 12, or be open on the inner side during manufacture and closed by an inner plate. Leads 9, conduit 10 may be brazed on. The heater may be an incomplete annulus (Fig. 3, not shown) for ease of clamping around a member (e.g. an extrusion nozzle), or a complete annulus, as shown, or a plate.
Patent GB-1353533-A (GB)
Title: Block polymers
IPC: C08G77/442
Filed: 1971-06-22
Abstract: 1353533 Polybutadiene-polysiloxane block copolymers FIRESTONE TIRE & RUBBER CO 22 June 1971 [2 July 1970] 29246/71 Headings C3P and C3T Block copolymers (BSi) n  or BSiB, where n is an integer, B is a polybutadiene having at least as much 1,2-structure as 1,4, and Si is a polysiloxane, are obtained by forming a polybutadiene having one or two alkali metal terminal atoms and reacting this living intermediate with a polysiloxane to produce a block polymer by intercalation. In examples, the product of polymerizing butadiene in tetrahydrofuran in the presence of lithium biphenyl is reacted with polydimethylsiloxane. The products may be peroxide cured in the presence of silica or carbon black.
Patent GB-432666-A (GB)
Title: Improvements in and relating to method of and machine for hobbing threading tools
IPC: B23P15/48
Filed: 1934-10-12
Abstract: 432,666. Making screw-cutting taps or dies. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Greenfield Tap & Die Corporation ; Sanderson Street, Greenfield, Massachusetts, U.S.A.) Oct. 12, 1934, No. 29247. [Class 83 (iii)] In a method of making a thread-cutting tap or die having a number of circumferential lands separated by longitudinal flutes the teeth along a land 1 are first cut so that they lie to one side of a normal helix line P to provide clearance on the side a<1> of the teeth and the teeth of the next land 2 are then cut so that they lie on the opposite side of said helix line, to provide clearance on the opposite side b<1>. The teeth of the lands 3 and 4 of a four-flute tap are in helical alignment with those of the lands 1, 2 respectively, clearance being thus provided at c<1> and d<1>. For making a tap T the work is mounted on a spindle 10 and all the teeth of a land are cut simultaneously by a hob H having parallel rings of teeth and moved axially by a cam 33 to the required pitch, the cam being driven by gearing 36. The hob is driven from a flexible shaft 25. In order to produce the alternate off-setting of the teeth the cam groove has stepped portions as shown in Fig. 2, the portions a, b, c and d being operative to produce the teeth on lands 1 .. 4 respectively, and the cam rotating at the same speed as the work. The amount of offset may be about À003". In the application to the three-land tap the axial shift between the first and second lands may be half of that between the second and third lands.
Patent GB-408698-A (GB)
Title: Improvements in or relating to airscrew hubs
IPC: B64C11/04
Filed: 1932-10-19
Abstract: 408,698. Air screws. BARNWELL, F. S., and BRISTOL AEROPLANE CO., Ltd., Filton House, Bristol. Oct. 19, 1932, No. 29270. [Class 114.] Air screws in which the blades are fixed in cylindrical sockets are provided with bushes 14 at the outer extremities of the sockets 10, their internal diameter being the same as that of the sockets. These bushes extend beyond the sockets and are given a tapered edge 16. When the socket is in two parts, the bush is similarly made and each half is soldered into its corresponding recess in the socket. According to the Provisional Specification instead of the bush the socket itself may be extended or provided with a tapered resilient edge.
Patent GB-989996-A (GB)
Title: Combustion chamber linings
IPC: H02K44/08
Filed: 1963-07-24
Abstract: 989,996. Magnetohydrodynamic machine combustion chambers. BROWN, BOVERI & CO. Ltd. July 24, 1963 [July 26, 1962], No. 29312/63. Heading F1L. A combustion chamber for a magnetohydrodynamic machine comprises a support member having wall portions defining a passage for cooling fluid flow, and a lining element consisting at least partially of ceramic material and supported by a portion of the support member extending away from the wall portions, the element being arranged on the support portion such that heat exchange between the element and the wall portions is substantially by radiation. A combustion chamber 1 of a magnetohydrodynamic machine is lined with small ceramic or part ceramic elements 2, Fig. 1, supported on plugs 7 attached to an annular tube 5 carrying coolant 6. Each element 2 is retained on plug 7 by a conical ceramic ring 9 locating within a hole in element 2 and by a ceramic ring 8 and nut 10. Rings 8, 9 are of lower thermal conductivity than elements 2. Plug 7 may have passages for circulation of coolant 6. In a modification, Fig. 4, each element 2 is bolted at 18 to a plug 15 attached to a wall 16 having cooling channels 17. More than one plug 7 or 15 may support each element 2 and the plugs may be copper. Heat exchange between elements 2 and tube 5 or wall 16 is substantially by radiation. The construction prevents excessive heat losses through the combustion chamber wall and reduces thermal stresses.