baber/WOPTO huggingface dataset:
Patent GB-1117594-A (GB)
Title: Unsaturated derivatives of the pregnane series
IPC: C07J1/00
Filed: 1965-07-15
Abstract: The invention comprises (1) a process for the preparation of steroids of the formula <FORM:1117594/C2/1> (wherein R1 is H, a - or b -CH3, or = CH2; and R2 and R3 are each H or C1- 6 acyloxy) by halogenation with chlorine or bromine in an inert organic solvent of corresponding steroids containing in rings A and B the D 3,5-3-acyloxy grouping, hydrolysis of the adduct formed, and dehydrohalogenation of the obtained 6b -halogeno - D 4 - 3 - ketone; and (2) as novel steroids, 6b  - chloro - 16 - methylene - 17a -acetoxy - progesterone of m.p. 144-146 DEG  C., 6b  - bromo - 16 - methylene - 17a  - acetoxy-progesterone of m.p. 148-149 DEG  C. (decomp.), 16 - methylene - 6 - dehydro - 17a  - caproyloxy-progesterone of m.p. 143-144 DEG  C. and 16-methyl - D 4,6,16 - pregnatriene - 3,20 - dione of m.p. 217-218 DEG  C.  In a modification of the above process for the preparation of the last-named steroid, the 3,20-di-enol-acetate of 16a  - methyl - progesterone is brominated and the product hydrolysed and dehydrobrominated to yield the required product.  Examples are given, and the hydrolysis of 17a ,21-diacetoxy-pregna - 4,6 - diene - 3,20 - dione to the corresponding diol and the acetylation of this to 21 - acetoxy - D 4,6 - pregnadien - 17a  - ol - 3,20-dione is also described.  3,17a - Dicaproyloxy - 16 - methylene - D 3,5-pregnadien -20-one is prepared from 16b -methyl-16a , 17a -epoxy-progesterone and caproic anhydride.  Reference has been directed by the Comptroller to Specification 963,427.
Patent GB-466602-A (GB)
Title: Improvements in or relating to balls for tennis and the like games and the manufacture thereof
IPC: A63B39/06
Filed: 1935-10-31
Abstract: 466,602. Pile fabrics for tennis balls &c. DUNLOP RUBBER CO., Ltd., and DOLBY, G. S. Oct. 31, 1935, No. 30058. [Class 142 (iv)] A rubber ball for tennis &c. is covered with a pile fabric which may comprise woollen base weft threads, cotton or wool base warp threads and woollen pile threads. A weft pile fabric, Fig. 1, with weft pile picks extending over nine warp threads, and with binding wefts, each extending over and under two warp threads may be used, which after being cut is scoured, bleached and milled. The warp threads may be three-fold 50s. and the wefts one-fold 20s.
Patent GB-1346967-A (GB)
Title: Apparatus and method for radio-frequency pulse generation in tuned radio-frequency loads
IPC: H03K3/80
Filed: 1972-06-27
Abstract: 1346967 Inverting MEGAPULSE Inc 27 June 1972 [23 Aug 1971] 30063/72 Heading H2F [Also in Division H3] A generator for supplying radio frequency energy to a tuned load such as an aerial comprises a plurality of SCR controlled storage capacitors connected to the load by magnetic pulse compressors, the capacitors being triggered in sequence to give a waveform of desired envelope. The basic generator shown in Fig. 1, is similar to that of Specification, two SCR controlled storage stages are shown which differ from the foregoing Application only in having separate voltage controlled power supplies and in having an SCR controlled bias on the capacitors C 11 , C 21 , C 1n  and C 2n . In operation, considering only the upper half of Fig. 1, the capacitors C 11  and C 21  are initially biased negatively. When SCR 11  is triggered capacitor C 11  becomes positively charged. When SCR 12  is triggered this charge is transferred to capacitor C 21  and when saturable inductor SR 11  saturates due to the charge flowing through it, the capacitor C 21  rapidly discharges into transformer T 11  and hence into the load L A , C A , R A . The next part of the wavetrain delivered to the load is generated by similarly triggering the next storage circuit (not shown) and so on until the nth circuit has been triggered when the process starts again. When a storage circuit has delivered its pulse the capacitors are rebiased, e.g. by using SCR 31  in the case of the first circuit in Fig. 1. By using independant voltage controlled power supplies the amplitude of the wave generated may be controlled, as can the width of successive half cycles of the wave. Adjustable inductors L v1 -L vn  allow the load resonant frequency to be set. When peak output energy is reached the load is short circuited by SCR A1  and SCR A2 , and rings down through them. This form of output coupling may be replaced by that shown in Fig. 5(a), where inductor L M  forms a weak magnetic coupling to which all the n stages of Fig. 1 may be connected. Both forms of coupling may be combined, as in Fig. 7, where n stages, only one of which is shown, are connected across the short circuitry SCRs and r stages, of which only one is shown, are connected across the weak magnetic coupler L M . During initial stages of the wavetrain the short circuiting SCRs are open circuit; at a given value i 3  of the load current they are triggered, and the weak magnetic coupling remains. The value of i 3  is chosen to avoid a step in the output current.
Patent GB-1472880-A (GB)
Title: Press
IPC: B30B15/06
Filed: 1974-07-08
Abstract: 1472880 Chipboard press MASCHINENFABRIK J DIEFFENBACHER UND CO 8 July 1974 [6 July 1973] 30218/74 Headings B5A and B5F In a chipboard press which comprises two relatively movable and heatable press plates 1 each mounted on respective beams 9 with insulation 3 between the plates and beams, metal shells 4 are fitted over the parts of the insulation 3 adjacent the beams 9 and the plates 1 to prevent damage to the insulation by differential thermal movements. Insulating strips 3 should be of high strength and low water absorption materials (examples given) but the insulation 11 in between may be of lower quality. Passages for heating fluid are provided in the plates 1. The beam 9 may comprise two parallel plates spaced by webs which may be interconnected by ribs (not shown), the lower plate 14 being cooled by fluid in passages 10. Alternatively the plate 14 may be omitted (Fig. 1, not shown) with the webs directly contacting the shells 4 of the insulation and the cooling passages (8) being formed in the webs (2). The cooling fluid temperature is controlled in response to the temperature of the webs measured at a point remote from the plate 1. The insulating strips 3 and also the shells 4 may be coated with PTFE or metals to reduce friction. Metal shims may be fixed inside the metal shells 4 to ensure the plane parallelism of the plates 1.
Patent GB-520351-A (GB)
Title: Improvements in or relating to constructions incorporating a scraper ring
IPC: F16J9/06
Filed: 1938-10-19
Abstract: 520,351. Valves. NAPIER & SON, Ltd., D., and TRYON, H. C. Oct. 19, 1938, No. 30219. [Class 7 (vi)] [Also in Group XXVI] A scraper ring, which may be applied to the engine piston or to the cylinder A in which a sleeve valve B reciprocates, is constructed of a complete ring D arranged loosely in a groove C in the cylinder A, or in the groove of a piston, a split scraper ring E which bears on the sleeve B or on the cylinder of an engine, and a resilient device between the rings D, E, which preferably takes the form of a sinuous spring F bearing on 'the two surfaces D, E. The ring E can thus yield in a radial direction and maintains a constant pressure which is unaffected by lack of true concentricity between the parts. The ring D may be formed of U-shape in cross-section, or as shown in Fig. 3 of E-shape with two scraper rings J, and sinuous spring rings J<1> arranged in the limbs of the E-member H, which is formed with an extension H<1> arranged in an annular extension G<1> of the groove G. Oil-removing grooves H<2>, H<3> are provided. In a modification, the ring D instead of being formed as one integral ring is formed as a split ring having interlocking ends, so that it is then not necessary to form the groove C between parts A, A<1>, which have to be separated completely to insert the scraper ring.
Patent GB-384754-A (GB)
Title: Improvements in or relating to ships' davits
IPC: B63B23/04
Filed: 1931-10-31
Abstract: 384,754. Davits. MARTEN, T. H., 90, Chedleigh Avenue, Toronto, Canada. Oct. 31, 1931, No. 30245. Convention date, Nov. 3, 1930. [Class 115.] In a gravity davit, the davits 27 are mounted on rollers 25, 26 on a carriage K which itself is provided with rollers 21, 31 which travel on guides D, F on fixed arched supports 12. The fall are led from the boat over rollers 28, 29, 30 on the davit and then over rollers 52, 53 to a winch arranged beneath the guide D and comprising a pair of spaced drums 42, 43. On release of the fall, the carriage with the davit moves until the carriage reaches the stops limiting the ends of the guides D, F and the davit then moves alone on the carriage to the boat-lowering position, as shown in Fig. 3.
Patent GB-919800-A (GB)
Title: Improvements in the construction of multi-level roadway crossings
IPC: E01C1/04
Filed: 1960-01-22
Abstract: 919,800. Road crossings. HERSEY, G. W. Oct. 17, 1960 [Jan. 22, 1960], No. 30360/62. Divided out of 919,354. Class 107. In a two-level roadway crossing the upper road 1 slopes upwardly and the lower road 2 downwardly to the point of intersection to provide head room for the road 2, the road 1 being constructed at one side with a pedestrian bridge 10 which is of shorter span than the raised portion of the road and links footways on opposite sides of the road 2, at least one link road, originating at the lowest level of the intersection, extending alongside the road 1 at the other side thereof. On the same side of the road 1 as the link road 9 but on the opposite side of the road 2 a vehicle loading bay 12 which extends towards the road 2 but is blanked off at 13 before reaching it.
Patent GB-893884-A (GB)
Title: Improvements in or relating to operating and flutter damping devices for the control surfaces of aircraft
IPC: B64D45/00
Filed: 1958-09-23
Abstract: 893,884. Controlling aircraft. HOUDAILLE INDUSTRIES Inc. Sept. 23, 1958 [Oct. 1, 1957], No. 30405/58. Class 4. In the operating mechanism of an aircraft control surface the operating motor and hinge for the surface are combined in a fluid pressure motor comprising a vane type piston controlled by a valve so constructed that in its neutral position it provides a leakage path for the fluid on opposite sides of the motor piston to provide a damper to reduce the tendency of the control surface to flutter. An aircraft structural member 11 carries brackets 12 for a fixed shaft 13 upon which is rotatably mounted a cylindrical housing 16 formed with flanges 17 to which is attached a control surface 20. The interior of shaft 13 is formed with liquid conducting passages connected by pipes 22, 23 to a control valve 25 having connections 40 and 51 to a pump and reservoir respectively, Fig. 3. The shaft 13 carries opposed vanes 26 sealed by glands 28 against the inner surface 27 of housing 16 which, between the vanes, carries fixed walls 31 sealed against the contacting surface 15 of the shaft. Passages 32, 35 and 33, 36 are provided in the housing to connect pipes 22 and 23 with chambers 29 and 30 respectively, the pipes connecting also with the pump connection 40 and the reservoir connection 51 through spring-centred valve 37 which is provided with a centre land grooved axially at 52 so that when the valve is in its neutral position fluid in chambers 29 and 30 may be metered through the orifice to damp flutter movement of the control surface and housing 16. A valve 46 normally closed by pressure fluid through line 47 but which may be biassed open by a spring 49, is located in a by-pass line 45 which connects pipes 22 and 23 through the medium of a metering orifice 50 which provides flutter damping when the pressure in line 40 fails due to a hydraulic system failure. A further embodiment, Fig. 4 (not shown), discloses an arrangement in which the hinge housing is stationary and the control valve and operating mechanism therefor is located within the damper housing.
Patent GB-1175817-A (GB)
Title: Knitting Machine Drive Apparatus
IPC: D04B15/94
Filed: 1968-06-26
Abstract: 1,175,817. Knitting-machines. SINGER CO. 26 June, 1968 [3 July, 1967], No. 30419/68. Heading D1C. The dial of a circular cylinder-and-dial machine is driven through a pair of co-operating wheels 90, 94, the wheel 90 attached to the cylinder support 24 pressing against the wheel 94 mounted in a support 100 attached to the dial and having the fabric produced on the machine passing between the wheles. The wheels are periodically rotated to advance the fabric at the rate at which it is taken up by the take-down mechanism. To prevent the fabric being marked due to the pressure between the wheels on additional drive from the drive shaft 14 is transmitted through shaft 42 and worm 54. The dial shaft 70 is coupled by a spring 74 frictionally and resiliently gripping and slipping about pulleys 56, 72. The two driving mechanisms ensure that the dial is rotated at the correct speed in the register with the cylinder the torque being proportionately spread between the two mechanisms such that the pressure between the two wheels 90, 94 is insufficient to mark the fabric. Alternatively instead of a slipping spring engaging two pulleys to transmit the drive, a chain drive may be connected to a spring loaded pawl housing which through the pawls and springs resilently transmits the drive to the dial.
Patent GB-1071516-A (GB)
Title: Improvements in or relating to shuttles for weaving looms
IPC: D03J5/00
Filed: 1964-08-04
Abstract: A shuttle has extensions (3) which protrude past the tip on the back of the shuttle to maintain even flight.  The extension may be in one piece (Fig. 9) and made of various materials and may be cushioned from the body of the shuttle.
Patent GB-266392-A (GB)
Title: Improvements in or relating to motor propelled road vehicles
IPC: B62D55/02
Filed: 1926-03-31
Abstract: 266,392. Dawson, Sir A. T., and Buckham, Sir G. T. March 31, 1926. Endless-track vehicles.-Relates to motor vehicles of the kind having endless tracks and road wheels for alternative use, the conversion from one state to the other being effected by power-operated means, and comprises a vehicle in which the power gear comprises a clutch under the driver's control and a crank or like device which is driven through the clutch in one direction only to effect the conversion from one state to the other and back again. The road wheels B, B<1> are carried at the outer ends of levers G, G', and the endless-track frames C<3> are carried by the inner end of these levers. A transverse shaft F<x>, which can be rotated from the engine shaft D through a clutch d, carries cranks F connected by links F<1>, F<2> to downwardly and upwardly extending arms f<1>, f<2> on the levers G, G<1> respectively. Thus, when the shaft Fx is rotated the cranks first rock the levers G, G<1> in one direction to bring the road wheels into contact with the ground and raise the endless-tracks from the ground, after which, further rotation of the shaft rocks the levers in the opposite direction to convert the vehicle into the endless-track state again. In either state of the vehicle the cranks preferably occupy a dead-centre position relatively to the rods F, F<1>, and the levers G, G<1> may be locked by suitable catches. Specification 265,670 is referred to.
Patent GB-832016-A (GB)
Title: A machine or the like with a shiftable slide and with a reading device for measuringor setting the shift of the slide
IPC: B23Q17/10
Filed: 1957-09-30
Abstract: 832,016. Machine-tool details. HENSOLDT & SOHNE OPTISCHE WERKE A.G., M. Sept. 30, 1957 [Sept. 29, 1956; July 6, 1957], No. 30483/57. Class 83 (3). In a machine-tool, a measuring device comprises an unnumbered scale 2 associated with a counting device 17 for numbering the scale. The slide 1 of a machine-tool carries the scale 2 marked by double lines at centimetre intervals. The scale is observed through a reading window 8. A millimetre scale 10 is interposed, the scale being adjustable transversely by an eccentric ring 12 rotated by a knurled rim 11, the rotation being indicated by a circular scale 15, Fig. 3, which has 100 divisions to denote <SP>1</SP>/ 100 ths of a millimetre. When the slide is moved, a rack 22 thereon rotates a series of ten counting-devices such as 17 1 , 17 6 , numbers on which are projected upwardly to appear next to the scale-markings 2. To set the device to zero, a motor 46 is actuated to rotate the scale 15 to zero, a motor 42 is actuated to move a slide carrying the window 8 until a scale-marking 2 embraces the zero line on the scale 10, and finally a motor 51 is actuated to rotate the counting-mechanisms 17 to zero. In a modification, the numbers are marked helically on a transparent cylinder 95, Fig. 4, which is advanced by screw-threads 86, 87 via gearing 79 driven by a rack fast with the scale 2. Instead of attaching the scale 2 to the slide, the scale may be fixed and the reading- device moved. In a further modification, the counting-mechanism may be geared to a leadscrew of the machine.
Patent GB-1130623-A (GB)
Title: Treatment of ricinoleic acid esters
Inventor: HOF LEENDERT PIETER VAN T
IPC: C11C3/12
Filed: 1966-07-07
Abstract: 1,130,623. Hydrogenating castor oil. UNILEVER Ltd. 15 June, 1967 [7 July, 1966], No. 30540/66. Heading C5C. A ricinoleic acid ester, particularly castor oil, is catalytically hydrogenated at below 130‹ C. under conditions such that substantial loss of hydroxyl value is avoided until the iodine value is less than 25 and hardening continued more rapidly at above 130‹ C. until the remaining saturation has been substantially reduced, e.g. to an iodine value less than 12. The hardening may be effected with a nickel catalyst, e.g. 0À1- 1% Ni at 0À5-5 atmospheres and at 90-120‹ C. for the first stage and 140-190‹ C. for the second. The hardened product may be dehydrated by heating to 170-250‹ C. under reduced pressure in the presence of an acid catalyst, e.g. NaHSO 4 .
Patent GB-1412557-A (GB)
Title: Electrically propelled vehicles
IPC: B60L15/20
Filed: 1973-06-27
Abstract: 1412557 Electrically propelled vehicle GES GESELLSCHAFT FUR ELEKTRISCHEN STRASSENVERKEHR mbH 27 June 1973 [23 Aug 1972] 30562/73 Heading B7H [Also in Division F2]  An electrically propelled vehicle includes a battery powered shunt wound electric motor 1 (or a motor with shunt wound characteristics) which is driven at a constant speed of rotation and which drives the wheels 6 through a clutch 7 and a branched input gearbox 2 with a variator 9, the vehicle speed being regulated by a control pedal 8 which acts on the variator 9. As described the gearbox 2 includes a planetary gear set. The input shaft 3 of gear box 2 drives the sun gear 10 through a first branch including gearing 16 and shaft 11 and drives the annular gear 14 through a second branch including variator 9, clutch 18 and gearing 17. The planetary gear carrier 12 drives the output shaft 4 of the gearbox 2. The variator 9 is preferably of the expanding pulley type, but any other torque converter may be used. The variator 9 is controlled by a control pedal 8 which acts through linkage 26 and a damping device 20, 21 which ensures that the maximum permissible current for the motor is not exceeded. The vehicle is operated as follows:- the motor 1 is switched on, either directly, or by means of a starting resistance and clutch 7 is engaged. At this stage the motor 1 drives the sun gear 10 and annular gear 14 in opposite directions and at such speeds that the output shaft remains stationary. The control pedal 8 is then depressed which alters the setting of the variator 9 and the vehicle moves off. When the maximum speed is reached the clutch 18 is disengaged and the annulus 14 is braked by brake 19 so that the motor 1 drives the output shaft directly through the first branch. When the vehicle has to be retarded brake pedal 22 is depressed which initially alters the setting of the variator 9 and then operates a mechanical brake 23. A dynamo 24 may be driven from the gearbox and when extra power is neede, e.g. for extra acceleration or for mounting ramps, the dynamo 24, connected as a motor, can increase the driving power for short periods.
Patent GB-1077311-A (GB)
Title: Improvements in or relating to the manufacture of enamel coatings
IPC: C23D5/06
Filed: 1965-07-19
Abstract: A decorated enamel coating is produced by applying a layer of enamel to the surface of an article, contacting the layer with finely-divided metal particles, and firing to soften the enamel so that the particles sink into and become embedded in the softened enamel. The metal particles may be carried on a synthetic plastics foil which is laid on the enamel surface and which vaporizes during firing.  The metal particles may be a noble metal, e.g. gold, and may be disposed so that on embedding they conduct electricity.  The enamel may be transparent or translucent.  The article may be metallic.
Patent GB-1131859-A (GB)
Title: Improvements in internal combustion burners
IPC: F23D14/00
Filed: 1967-07-04
Abstract: 1,131,859. Burners. COMPAGNIE DE SAINT-GOBAIN. 4 July, 1967 [20 July, 1966], No. 30765/67. Heading F4T. A gaseous fuel burner arrangement includes a combustion chamber 1 with an outlet 2 for the combustion gases with lips cooled by circulating fluid, the combustible gaseous mixture being fed via a conduit 6, past a diffuser 7 to a first grid 8 constituted by an apertured, V-shaped iron plate and thence to a second grid 11 constituted by bars of refractory material. A channel 9 connecting the conduit 6 to the burner inlet has a double wall 10 through which is circulated a cooling medium. Modified arrangements of grids are described.
Patent GB-1172334-A (GB)
Title: Shadow-Mask Cathode-Ray Tube
IPC: H01J29/07
Filed: 1968-06-27
Abstract: 1,172,334. Colour television tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 27 June, 1968 [30 June, 1967], No. 30765/68. Heading H1D. A generally rectangular shadow mask 2 provided with an edge 3 extending away from the screen, is supported from the envelope by means of resilient suspension strips 4 each situated near a corner of the mask and extending in a plane containing the axis of the tube from a point on the inner side of the edge to a point on the envelope beyond the edge so that it skirts the edge. Each strip 4 may be secured at one end to a member 6 which bridges the corner of the mask, or the strip may be bent so that it constitutes a bridging member. The other end of each strip may bear on a stud 5 provided on the face-plate 1, as shown in Fig. 2, or may be provided with a pin (9, Figs. 3 and 4, not shown) which is clamped in a recess (8) in a thickened part (7) of the face-plate.
Patent GB-801799-A (GB)
Title: Improvements in or relating to decoding systems for graphically recording data represented by electrical code signals
IPC: H03M1/00
Filed: 1956-10-09
Abstract: 801,799. Recording-apparatus. BENDIX AVIATION CORPORATION. Oct. 9, 1956 [Oct. 10, 1955], No. 30781/56. Class 106 (4). [Also in Group XXXVIII] A device for recording incoming binarycoded digits and the time of their arrival, the digits being received serially on four leads C1 to C4, Fig. 1, comprises a continuously driven monophillic coding disc 24 which drives a conductive belt 38 carrying electric styli 42 across a moving record web 44, and two sets of relays R1-R4, the coding disc being so arranged that it produces a combination of markings on four leads L1 to L4 representative of the position of that stylus actually over the record web with respect to the record web and the relays being so arranged that when the state of the set R1 to R4 is the same as that of the set R1<SP>1</SP> to R4<SP>1</SP> their contacts apply a voltage to the styli causing a mark to be made on the record web. A second embodiment is described (Fig. 2, not shown), using four pair of sensing brushes co-operating with the coding disc, in place of relays R1 to R4.