baber/WOPTO huggingface dataset:
Patent GB-577530-A (GB)
Title: Improvements in or relating to electron discharge devices employing hollow resonators
IPC: H01J25/24
Filed: 1941-12-16
Abstract: 577,530. Velocity modulated discharge tubes. PEARCE, A. F., BARFORD, N. C., and MAYO, B. J. Dec. 16, 1941, Nos. 16230/41 and 681/43. [Classes 39 (i) and 40 (v)] In a velocity-modulated electron discharge device working as an oscillation generator, wherein the electron beam is reflected back through the resonator 6 by a reflecting electrode or electrode system 8, the shape of the electrode and the operating potentials are such that at the zero equipotential surface in the reflecting system the potential gradient is small, i.e. not more than 0.6 of the gradient averaged over the distance between the centre of the resonator gap and the zero equipotential surface. Sizes of the orifices in the resonator gap and electrode 8 and other dimensions related to potentials are given. The electrode 8 may be a deep cylinder as shown in Fig. 4, a frustum of a cone, Fig. 5, or formed of a number of parts 17, 16, Fig. 6, the part 17 being at a potential between that of the resonator and the reflecting electrode 16. The beam may be of ribbon form as set out in Specification 574,512, or annular or radial as described in Specification 577,037, the reflecting electrode system being suitably designed to deal with the shape of beam. With the forms described, as the potential applied to the resonator varies, to maintain efficiency the numerical value of the potential applied to the reflector electrode should vary in the same sense. As a consequence, such an oscillation generator is particularly suitable as the local oscillator 11, Fig. 7, in a superheterodyne receiver, whose applied control potentials are obtained from discriminator 14, sensitive to frequency changes in an intermediate frequency amplifier 12.
Patent GB-247819-A (GB)
Title: Improvements in or relating to parachutes
IPC: B64D17/00
Filed: 1925-06-23
Abstract: 247,819. Johannessen, W., and Jensen, A. P. June 23, 1925. No Patent granted (Sealing fee not paid). Parachutes.-The frame d with hand grip f is attached to a parachute of collapsable or permanently extended type by a continuous cord e passing through eyelets c &c. at the edge of the parachute and either round the frame as shown or through eyelets &c. thereon. The eyelets c are carried by the ribs b or by a reinforcing ring of wire or cane at the edge of the parachute. A second frame i is carried by strong cords h which may be elastic and which pass over pulleys k the edge of the parachute to the main frame d. The frame : i may be pulled down to the frame d and secured to it. The hand grip f may be provided with a glove or hook. A hook g is provided at the top of the parachute for raising or suspending it.
Patent GB-789546-A (GB)
Title: Improvements in and relating to machines for manufacturing wire netting
Inventor: BOWER PAUL MAURICE RHODES
IPC: B21F27/06
Filed: 1955-06-06
Abstract: 789,546. Making netting. BARNARDS, Ltd. May 15, 1956 [June 6, 1955], No. 16257/55. Addition to 736,203. Class 83 (4). A wire netting making machine, as described in the parent Specification, is modified in that means for feeding wire strands 8a, 8b to a twisting drum 4 comprises a rigid elongated guide member 6 extending parallel to and adjacent the surface of the twisting drum and mounted for oscillation about its longitudinal axis, said member 6 having two rows of holes 18, 19 formed through opposite sides thereof, each hole of one row being coaxially spaced from a hole of the other row whilst the holes 18, 19 of each row are alternately of large and small diameter respectively, not less than will allow the free passage of a single wire strand, and are so arranged with respect to the holes of the other row that each coaxial pair comprises one large 18, and one small 19, diameter hole whilst means is provided for oscillating the guide member 6 about its longitudinal axis substantially symmetrically about a mean position of the plane containing all the axes of the pairs of coaxial holes, which position is substantially tangential to the twisting drum 4, so that the guide member 6 is in its successive limit positions during feed of the wire strands 8a, 8b to successively operative rows of slotted pinions 14. Thus, in co-operation with spheroidal guide segments 17 on the drum 4, the guide member 6 in one position guides the wires 8a to lie in the slots of the pinions 14 a little before the wires 8b and under them and in the other positions guides the wires 8b a little before the wires 8a. Selvedge wires 8c may be guided by holes 24 in a bar 25 directly through the pinions. The means for oscillating the guide member 6 comprises a cam 23 on a take-off drum 5 for the wire netting, engaging a follower 22 on an arm 21 secured to the member 6. The member 6 may comprise a tube of circular or rectangular section or a pair of parallel bars or solid bar having conical bores formed therethrough of alternately opposite tapers, the mouths of the bores forming the holes 18, 19.
Patent GB-988806-A (GB)
Title: New steroid compounds and processes for their preparation and conversion into pharmacologically-useful compounds
IPC: C07J9/00
Filed: 1962-01-24
Abstract: The invention comprises 5b -pregnanes, having the formula <FORM:0988806/C2/1> wherein R1 is a hydrogen atom or an acyl radical, and either R2 is a b -hydroxyl group H(OH) in which case R3 and R4 are each a hydrogen atom or an acyl radical and R5 is a hydrogen atom, an acyl radical or a benzyl group, or R2 is the oxygen atom of a keto group, and R3, R4, and R5 together are a methylene group ­ CH, the acyl radical in each case being derived from an aliphatic carboxylic acid having from 2-7 carbon atoms and processes for the preparation thereof by treating a 3a -hydroxy - 20 - carboalkoxy - 20 - benzyloxymethylene - 5b  - pregnan - 11 - on - 21 - oic acid alkyl ester with a mixed metal hydride to form 3a ,11b ,21 - trihydroxy - 20 - hydroxymethylene - 20 - benzyloxy - methylene - 5b  - pregnane, subjecting the latter to catalytic hydrogenolysis to give 3a ,11b ,21-trihydroxy-20,20-bis - hydroxymethylene - 5b  - pregnane, reacting the latter with an acylating agent derived from a lower aliphatic carboxylic acid having 2-7 carbon atoms to obtain 3a ,21-diacyloxy-11b  - hydroxy - 20,20 - bis - acyloxymethylene-5b  - pregnane, oxidizing the latter by treatment with a mixture of chromic acid and concentrated sulphuric acid to obtain 3a ,21-diacyloxy - 20,20 - bis - acyloxymethylene - 5b -pregnan - 11 - one, saponifying the latter by treatment with alkali to obtain 3a ,21 - dihydroxy - 20,20 - bis - hydroxymethylene - 5b -pregnan - 11 - one, reacting the latter with a lower alkyl ortho-lower aliphatic acylate e.g. lower alkyl orthoformate to obtain 11-(3a -hydroxy - 5b  - androstan - 11 - on - 17b  - yl)-31,51,81\h - trioxabicyclo - [2,2,2] - octane, treating the latter with an acylating agent to obtain the corresponding 3-acyloxy compound and subjecting the latter to hydrolysis to obtain 3a -acyloxy - 20,20 - bis - hydroxymethylene - 21 - hydroxy - 5b  - pregnan - 11 - one.  As mixed metal hydride, LiAlH4 may be used.  Catalytic hydrogenolysis is preferably effected in ethanol with palladium black. Specification 967,078 also is referred to.
Patent GB-237086-A (GB)
Title: Improvements in artificial limbs
IPC: A61F2/58
Filed: 1924-07-07
Abstract: 237,086. Marks, E. C. R., (Livingston Artificial Limb Co.). July 7, 1924. Limbs, artificial.-An artificial hand is provided with jointed fingers and thumb and means for holding the hand in any position relatively to the wrist. Finger -operating mechanism. Each finger comprises two secticns 18, 14 pivoted together at 19 and connected by a link 20. A spring 23 tends to hold the finger normally in the closed position. The finger is opened and held in any position by means of a spring-pressed bar 26 pivoted at 27 to the link 20 and having a series of teeth which engage a fixed bar 29 on the hand. The bar 26 is disengaged from the bar 29 and moved to open the finger by a line 32 which passes over a pulley 33. Each finger is provided with similar operating means, the lines 32 from all the fingers being connected to a single operating line outside the hand. Thumboperating mechanism. The thumb is pivoted at 39 and is placed in any desired position manually. It is locked in any position by means of a spring- pressed bar 41 pivoted at 42 and provided with notches 43 which engage a fixed bar 44. The bar 41 is moved out of engagement with the bar 44 by means of an operating rod 46. Wrist-operating mechanism. The lower part of the hand terminates in a spherical part 49 which engages in a corresponding member 50 on the wrist to allow the hand to be turned to various positions. The member 50 is split at one point, as shown in Fig. 1, and provided with lugs 52 which can be drawn together or separated by a screw 53 provided with a handle 54. The pressure between the members 49 and 50 can accordingly he adjusted and fixed in any position relatively to the wrist. A guiding flange 55 is fixed to the member 49 to prevent undue wear of the lines 32.
Patent GB-783915-A (GB)
Title: Elevating apparatus
IPC: E02B17/08
Filed: 1955-06-07
Abstract: 783,915. Fluid pressure jacks. ARBELLA, R. C. P., and SVENUNGSSON, J. G., [trading as RODOVERKEN SVENUNGSSON & CO.]. June 7, 1955 [June 11, 1954], No. 16349/55. Class 78 (3). [Also in Group XXIX] A plurality of jacks used in the construction of a tank (see Group XXIX), each comprise a fluid pressure ram 6; a fixed column 1 provided with a pair of toothed bars 18 and channelsection guides 12; a toothed lifting bar 9 which is operatively connected with the lifting head of ram 6; and a lifting carriage 10 provided with rollers 11 engaging guides 12 and spring-loaded pawls 13, 17 engaging the teeth on bars 9, 18. In operation, extension of ram 6 raises bar 9, together with the lifting carriage, until the bar abuts against an adjusting screw 8, on retraction of the ram, bar 9 is lowered but the carriage remains supported by pawls 17 and racks 18. Thus reciprocation of ram 6 causes the carriage, and with it the tank section 24, to be inched along the column 1. The rams of all the jacks are connected in series and are actuated simultaneously from a common source of fluid pressure.
Patent GB-574880-A (GB)
Title: Improvements in and relating to dynamo-electric machine
IPC: H02K23/02
Filed: 1942-11-20
Abstract: 574,880. Dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 20, 1942, No. 16416. Convention date, Nov. 27, 1941. [Class 35] An armature reaction excited machine comprises an armature 10, Fig. 1, and a magnetic frame 11 with split poles 19, 22 and 20, 21 having series compensating windings 24 in the load circuit of the machine and producing a component of excitation opposing secondary armature reaction 18 and aiding the primary armature reaction 17. The load characteristics of the machine are controlled by separately excited windings 23 arranged on the poles and producing a flux opposing secondary armature reaction and, where these windings are provided only on the poles 20, 22, a flux aiding the primary armature reaction. The Specification as open to inspection under Sect. 91 comprises also a machine (Fig. 3, Cancelled), having separately excited windings 25 arranged on all poles and in which a portion 26 of the series compensating winding is arranged around the two parts of each divided pole. This subject-matter does not appear in the Specification as accepted.
Patent GB-689195-A (GB)
Title: Device for suppressing disturbances by electric apparatus in a radio receiver at all wavelength ranges
IPC: H04B1/10
Filed: 1950-06-30
Abstract: 689,195. Radio receiving systems. IJZER, J. R. June 30, 1960 [July 9, 1949], No. 16445/50. Class 40 (v). In an arrangement for suppressing disturbances in a radio receiver by electrical apparatus, the-aerial 1 is arranged outside the disturbance region and is connected by a conductor 2 to one side of the primary P of a transformer a conductor 3 which is parallel and close to the conductor 2 being connected to the other side of the winding P. The secondary S is connected to the receiver and an earthed metal screen 5 is arranged between the windings. The transformer primary, Fig. 2 (not shown), is not conductively connected to earth and is arranged in two equal parts which are wound in opposite directions and surrounded by a cylindrical metal screen, the secondary winding being arranged over the metal screen. Since the disturbance voltage in conductors 2 and 3 is substantially equal no disturbance voltage is induced into the secondary winding S. It is stated that by avoiding a conductive earth connection to the primary winding and utilizing the capacitance between the primary winding and the earthed screen the symmetry of the arrangement is improved.
Patent GB-183116-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04M15/10
Filed: 1922-06-14
Abstract: 183,116. Siemens & Halske Akt.-Ges. June 15, 1921, [Convention date]. Metering systems. - The meter-controlling magnet is provided with means whereby the strength of the field is reduced at the end of the metering impulse to release the armature. In the arrangement for a manual system shown in Fig. 1, upon insertion of the plug AS in the jack AK, a circuit is completed through the cut-off relay T<1>, the winding I of the meter-magnet E<1>, and a resistance W, which is momentarily shortcircuited at definite time-intervals by a switch Zr, whereby the current is increased so that the armature e<1> is attracted and closes a circuit through the winding II of the meter-magnet. The two windings are opposed, so that at the end of an impulse the field is neutral, and the armature is released, actuating a counter. A modification is described in which the circuit through the winding II is completed upon energization of the relay T<1>. In the arrangement for an automatic system shown in Fig. 2, the energization of the meter-magnet E<2> removes a short-circuit from the opposing winding II. The winding II may be replaced by a resistance. Arrangements applicable to both manual and automatic systems are described in which (1) a polarized metermagnet is used, and (2) the magnet is shunted by a resistance upon attraction of the armature.
Patent GB-1426178-A (GB)
Title: Playing piece
IPC: A63D3/02
Filed: 1972-04-10
Abstract: 1426178 Toy projectors; projectors for games SUBBUTEO SPORTS GAMES Ltd 6 April 1973 [10 April 1972] 16493/72 Headings A6H and A6S A projector for use as a toy or in a game is freely movable and free standing on a playing surface, and comprises a base which can be held by hand upon the playing surface with a figure simulating a human performing an overhead two-handed throw spring-mounted upon the base and so formed as to hold a ball, &c or support a ball, &c held against it, the figure being pulled back against spring biass and then released to project the ball, &c. The figure may be articulated at one or more joints, e.g. the elbow, shoulder, waist, knee or ankle, and the articulated joint or joints may be spring biassed. Alternatively the figure may be rigid and mounted on the base through a sprung pivot or a spring, &c, or may itself be made of a resilient material such as a plastics. As shown. a base 2 carries a spring 3 and mounting block 4 to which is secured a figure 1 simulating a football player. A ball 6 is held against the head and hands of the figure 1 by one hand of the player, while the base 2 is held on the playing surface by the other hand. Ridges 5 across the base 2 facilitate retaining the base in position. The figure 1 and spring 3 are bent backwards, Fig. 3 (not shown), and released to throw the ball 6.
Patent GB-895964-A (GB)
Title: Improvements in or relating to reversible ploughs
IPC: A01B3/42
Filed: 1958-05-22
Abstract: 895,964. Agricultural implements. BOMFORD, D. R. Aug. 12, 1959 [May 22, 1958], No. 16526/58. Class 6(1). A reversible plough wherein oppositely handed plough shares are secured to a structure rotatable about a fore and aft axis between two limiting positions on a support which is raised and lowered by a hydraulic lifting mechanism is characterised in that movement of the support results in rotational movement of the rotatable structure sufficient to move it from one limiting position upwardly and beyond dead centre position whereafter its movement towards the other limiting position may take place under gravity. As shown in Fig. 1 a lever 14 is pivoted on the rotatable structure 12 and is connected by a chain 18 to a fixed point, the lever having a pin and slot connection with a link 26 pivoted to a latch 13 pivotally mounted on the structure 12 and engageable with one of two stops 23, 24 at opposite limits of rotational movement of the structure. In a modification the link 26 is omitted. In a further modification the chain is replaced by a collapsible strut or a telescopic strut. Specification 895,965 is referred to.
Patent GB-496034-A (GB)
Title: Improvements in or relating to regeneratively heated chamber ovens for producing gas and coke
IPC: C10B5/02
Filed: 1938-06-02
Abstract: 496,034. Coke-ovens. OTTO, C. June 2, 1938, No. 16531. Convention date, June 16, 1937. [Class 51 (ii)] In a " twin "-flued cokeoven the greater amount of heat which is required at the two ends of the oven to compensate for end heat losses is provided for by reducing the cross-sectional area of the end flues 9 as compared with that of the flues 10 with which they co-operate in reversal. In a modification, Fig. 5, not shown, the end flues are of the same dimensions as the other flues of the heating-walls, but each end flue is in reversing connection with the second and third flues.
Patent GB-931180-A (GB)
Title: Vehicle wheel-axle constructions
IPC: B60K17/04
Filed: 1962-05-01
Abstract: 931,180. Planetary hub gears. CLARK EQUIPMENT CO. May 1, 1962 [May 19, 1961], No. 16566/62. Class 79(2). In a planetary reduction gear which is contained within the wheel hub 18 of a fork-lift truck and comprises planet pinions 46 mounted in a carrier 40 splined to an axle housing 12 and a ring gear 36 secured to the wheel hub 18, a sun gear 32 driving the reduction gear is either rotatably mounted on an axle shaft 14 extending through the housing 12 and is disconnectably coupled to the axle shaft by a dog clutch 58 as shown in Fig. 1 or the sun gear is splined to the axle shaft and may be slid out of engagement with the planet pinions 46. The dog clutch 58 is engaged with the sun gear 32 by means of a lever 60 carried on a shaft 68 (Fig. 2) which extends through a cap 70 on the hub 18 and is rotated by a rod inserted in a hole 88. A spring- loaded ball mechanism 72 engages depressions 74, 76 in the lever 60 to retain the dog clutch 58 in the engaged or disengaged position. In Fig. 3 (not shown) a similar lever system but disposed below the axle shaft slides the sun gear 32 in and out of engagement with the planet wheels 46.
Patent GB-297490-A (GB)
Title: Improvements in or relating to the manufacture of blown glass articles
Filed: 1927-06-22
Abstract: 297,490. Hunt, S. June 22, 1927. Blowing. - Relates to a device for connecting a ring mould to the blowhead of a machine in order to resist the tendency of the mould to be forced away from the underside of the blowhead, thus preventing loss of blowing pressure. According to the invention, the halves 5 of the ring mould, which are pivoted on a pin 6 carried by the blowhead 7, are formed with grooves 11, or projections, that engage projections 10, or grooves, on a pin 9 carried by the blowhead. The grooves on the mould halves are so arranged that they engage the projections 10 as the mould is closing and become disengaged as the mould is opened, and they are so shaped that the clearance. between the mould and the blowhead is progressively reduced as the mould is closed. The pin 9 may serve to centralise the mould in relation to the blowhead.
Patent GB-352665-A (GB)
Title: Improvements in or relating to processes for the production of materials adapted to be moulded and fired from raw material containing lime
IPC: B28C1/20
Filed: 1930-05-29
Abstract: 352,665. Disintegrating and moulding material containing lime. JIROTKA, B., 13, Belle-Alliancestrasse, Berlin. May 29, 1930, No. 16615. Convention date, May 29, 1929. [Classes 59 and 117.] A process for working up plastic material containing lime for moulding purposes and especially for moulding material capable of being fired, comprises feeding the material in the form of a bar to a rapidly rotating grinding member by which it is ground and thrown off. The grinding devices may be of the kind described in Specification 276,471, [Class 59, Grinding, crushing &c.], for grinding peat &c. Clay &c. is conveyed by a screw 1, Fig. 1, to a rotating brush 2, with steel &c. blades 3, and thrown on to a conveyer 22 for transference to a funnel containing a screw 10, Fig. 2, which presses the material against a revolving brush 12 from which it is thrown into a chain of moulds 14 for the manufacture of bricks, tiles, &c. The nozzle 8 of the screw conveyer 1, Fig. 1, is provided with a series of spring flaps 9 which permit stones &c. in the clay to be discharged farther than the clay and so separated. The material may be disintegrated by being forced by a screw conveyer between conical or lenticular discs containing wire brushes or between a revolving brush and a fixed or movable breast or a movable, rotary breast. The material from the brush 12, Fig. 3, may be discharged into a ring mould 18, 21 supported on a rotary disc 16 or it may be discharged into moulds 26, having spring-supported sides, Fig. 4, mounted on a rotary disc 25, the moulded articles being dropped on to a conveyer band 28. In a modification only endplates for the moulds are provided on the drum, the side-plates being formed by segmental plates 38, Fig. 6 (not shown). The brush 12, Fig. 8, may discharge the material on to a rotary pipe mould 39 which may be perforated on its periphery so that the material may adhere by the effect of a vacuum inside the mould. The throwing apparatus may be inside the mould ; it may also be movable.
Patent GB-738699-A (GB)
Title: Improvements relating to hydrodynamic torque converters with adjustable blades
IPC: F16H61/56
Filed: 1953-06-17
Abstract: 738,699. Hydraulic couplings. DAIMLERBENZ AKT.-GES. June 17, 1953 [June 17, 1952], No. 16713/53. Class 69 (2) In a hydrodynamic torque converter the guide rotor L, the turbine rotor T and the pump rotor P all have adjustable blades. The pump and turbine rotors comprise fixed and adjustable blades P2, P1 and T2, T1, respectively, and all the blades L1, L2, L3 of the guide rotor L may be adjustable. The blades are supported for the purpose of torque transmission in one direction and are adjustable in the opposite direction; their movement in this direction may also be limited. Where a plurality of adjustable blades are fitted to a rotor they may be interconnected for common movement. The rotor L may be arranged on a free-wheel device. The axes of rotation of the blades are arranged in advance of their respective centres of pressure in the direction of fluid flow and their movement may be damped by friction with the pivots or with the neighbouring wall. All the blades may be similarly shaped and may be curved or straight.