baber/WOPTO huggingface dataset:
Patent GB-463724-A (GB)
Title: Improvements in or relating to propagating or tuning coils for the reception or transmission of radiated power
IPC: H01F21/06
Filed: 1935-08-30
Abstract: 463,724. Inductances. BROWN, S. G. Aug. 30, 1935, No. 24255. [Class 38 (ii)] A propagating or tuning coil having an adjustable magnetic core for the variation of its inductance comprises a single layer winding, the inherent capacity of the winding being used for tuning. In one form as shown in the Figure, the coil is provided with two cores 13, 14 which may be simultaneously or successively inserted. In a further modification, a screen is provided formed from axially arranged strands of wire earthed at one end. Stranded wire may be used for winding the coil. Specifications 444,951 and 445,252, [both in Group XXXVI], are referred to. Reference has been directed by the Comptroller to Specification 421,564, [Group XXXVI].
Patent GB-265490-A (GB)
Title: Improvements in safety wheels or supports for motor cycles
IPC: B62H1/12
Filed: 1926-10-01
Abstract: 265,490. Munsch, F. Oct. 1, 1926. Safety wheels.-In safety devices for motor cycles, of the type in which a supportirg-wheel is mounted on each side of the rear wheel in a fork-shaped swinging arm, two downwardly curved arms h, adapted to swing upwards about a pivot g, are acted upon by springs p, which hold the safety wheels n near the ground, and enable them, when in contact with the ground, to yield laterally, so that the rear wheel of the motorcycle remains in contact with the road, and overloading of the safety wheels is avoided. The pivot bolt g of each arm h is mounted in a socket f on one part b of a two-part, clip b, c bolted to the chain stays a. The wheel n is maintained at the required distance from the ground by an arm. w engaging a disc u of selected thickness removably mounted on an extension t of the clip part c. A stay y hooked to the arm h and to a clip on the frame member a prevents fore and aft movement. The tension of the spring p is adjusted by means of a screw hook r.
Patent GB-205643-A (GB)
Title: Improvements relating to the construction and arrangement of cranks for operating point-rodding on permanent ways
IPC: B61L7/02
Filed: 1922-09-08
Abstract: 205,643. Williams, O. R. Sept. 8, 1922. Rods for operating points.-A number of bell cranks in the point-rodding between the cabin levers and the points are arranged alternately at high and low levels and the arms of the levers are recessed as at b, c to receive the adjacent pivot pins and the ends of the next bell crank on the same level. Economy of space and greater facility of operation are achieved.
Patent GB-935156-A (GB)
Title: Improvement relating to gas filtering apparatus
Inventor: BAXENDALE RICHARD HENRY
IPC: B01D46/04
Filed: 1961-07-06
Abstract: 935,156. Air filters. DALLOW LAMBERT Ltd. July 4, 1962 [July 6, 1961], No. 24416/61. Class 8(2). The closed lower ends 9 of a plurality of inward flow filter bags are each located in a U-shaped recess 8 each half of which is formed by a cast metal or moulded plastic unit U; the units being clamped side by side alternately left-hand and right-hand on a rectangular sectioned horizontal shaker rod 2. The bent outer end 3a of a radial limb 3 of each unit has a lug 5 and a recess 6 which respectively engage a recess and lug on the bent end of an adjacent unit to form a bridge between adjacent filter bags. Specification 905,113 is referred to.
Patent GB-944682-A (GB)
Title: Improvements in or relating to multi-stage variable-gain transistor amplifiers
IPC: H03G1/00
Filed: 1962-06-26
Abstract: 944,682. Semi-conductor circuits; automatic gain control. SIEMENS & HALSKE A.G. June 26, 1962 [June 30, 1961], No. 24448/62. Headings H3R and H4T. In a multi-stage transistor amplifier having variable attenuators controlled in accordance with signal level connected between individual stages the control is such that the attenuation of the attenuator last in the direction of transmission is first increased to its maximum before the attenuation of the preceding attenuator is increased. Fig. 3 shows a wide band transistor amplifier with variable attenuators I, II and III each comprising a network of diodes D1, D2 and the emitter-base junction of the following transistor amplifier, the gain control signal being applied to the terminals - UR, + UR and Ue, to control the current through the diodes and therefore their impedances, the preferred arrangement being that the shunt diode D1 is operated with zero current through it while current is flowing in the series diode D2 and vice versa. Resistors R4, R5 and R6 are provided to limit the range of the attenuator and the variable capacitor is provided in series with D1 to adjust the frequency response. Since the frequency response of the attenuators may be compensated to be similar at maximum and minimum attenuation but will depart from this response in intermediate attenuation conditions, the arrangement according to the invention enables the frequency response to be maintained within close limits since only one attenuator is at other than its maximum or minimum attenuation at any one time. If slow response to changes in level is required the diodes may be replaced by thermistors.
Patent GB-1534648-A (GB)
Title: Planet gear positioning and retaining mechanism
IPC: F16H1/46
Filed: 1977-06-13
Abstract: 1534648 Epicyclic gearing CATERPILLAR TRACTOR CO 13 June 1977 [19 Nov 1976] 24517/77 Heading F2Q In epicyclic gearing having planet gears 32 rotatably mounted on axle pins 47 these pins each have a lubricant inlet 56, into which lubricant flows due to the rotation of the carrier 24, a central passage 52 and lubricant outlets 54 for the bearings for the planet gears. The gearing is between an hydraulic motor 19, which drives the sun gear 21 and a wheel rim 14 to which a ring gear 39 is attached. The reaction is taken by a further ring gear 36, each planet gear having teeth 33 which mesh with the sun gear 21 and ring gear 36 and teeth 34 which mesh with ring gear 39. To disconnect the drive a brake 38 is released to release ring gear 36. A retainer plate 57 prevents rotation and axial movement of the axle pins, in slots of which it engages.
Patent GB-863779-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J5/00
Filed: 1957-08-02
Abstract: The invention comprises steroid compounds having the general formula: <FORM:0863779/IV (b)/1> wherein R is alkyl or aryl radical, R1 is a hydroxy or keto group, R11 is iodine, fluorine or the group -O-SO2-R111 wherein R111 is a lower alkyl radical, phenyl, tolyl or naphthyl, and a process for the preparation thereof wherein a compound having the general formula:  <FORM:0863779/IV (b)/2> is treated with an organic sulphonyl halide to obtain a compound having the general formula:  <FORM:0863779/IV (b)/3> and then if desired treating the latter compound with an alkali metal iodide to produce the corresponding 21-iodo derivative, if desired treating the latter compound with silver fluoride to produce a compound having the general formula:  <FORM:0863779/IV (b)/4> and then if desired oxidising the 11-hydroxy substituent when present to the corresponding 11-keto derivative.  As oxidising agent there may be used chromic anhydride.  Specific compounds claimed are 6a -methyl-11b , 17a -dihydroxy- 21- fluoro- 4- pregnene- 3, 20- dione, 6a -methyl-17a -hydroxy- 21-fluoro-4-pregnene-3, 11, 20- trione, 6a - methyl- 11b , 17a -dihydroxy-21-iodo-4-pregnene-3, 20-dione, and a 21- sulphonate of 6a - methyl- 11b , 17a , 21-trihydroxy- 4- pregnene- 3, 20- dione.  Specifications 826,627 and 863,782 are referred to.ALSO:6 - Methyl - 11b ,17a  - dihydroxy - 21 - fluoro - 4 - pregnene - 3,20 - diones and 6 - methyl - 17a  - hydroxy - 21 - fluoro - 4 - pregnene - 3,11,20 - triones are useful in oral, parenteral and topical compositions, e.g. as ointments, lotions, jellies, creams, suppositories, bougies, aqueous suspensions &c. Alternatively other 6a -alkyl or 6a -phenyl compounds or the 6b -alkyl or 6b -phenyl compounds may be employed.  A dermatological and ophthalmic ointment incorporates 6a  - methyl - 11b ,17a  - dihydroxy - 21 - fluoro-4-pregnene-3,20-dione.  In addition there may be present neomycin sulphate, bacitracin, circulin, polymyxin B sulphate, gramicidin, streptomycin sulphate, dihydrostreptomycin sulphate, oxytetracycline, chlorotetracycline, tetracycline, chloramphenicol and sulphonamides.  Specifications 826,629 and 863,782 are referred to.
Patent GB-803639-A (GB)
Title: Device for feeding wood or the like to tools for chipping same into small fragments
Inventor: VOELSKOW PETER
IPC: B27L11/00
Filed: 1957-08-03
Abstract: 803,639. Chipping wood. SYBERTZ, H. [trading as HOMBAK MASCHINENFABRIK K. G.]. Aug. 3, 1957, No. 24659/57. Class 145. A machine for chipping wood comprises a rotary cutter 1 enclosed in a casing 2 having a chip-ejection opening 3 and a wood-feeding shoot 5 having an extension 8 which projects into a guide 4 extending from the casing, the cutter and shoot being relatively movable so that the extension pushes or backs up the portion of the wood being operated on by the cutter. As shown, the shoot 5 is slidable towards the cutter with its axis parallel to the cutter axis and with the end of the wood resting on the face 7 of the guide 4 but it may have a swivelling motion. The extension 8 is curved to correspond to the curvature of the cutter. Two shoots may be provided, one retracting while the other feeds towards the cutter.
Patent GB-367813-A (GB)
Title: Improvements relating to measuring and like apparatus for electric high potential circuits
IPC: G01R15/06
Filed: 1930-08-18
Abstract: 367,813. Protective cut-out arrangements. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Aug. 18, 1930, No. 24680. Convention date, Aug. 17, 1929. [Class 38 (v).] A representation of the voltage in a high voltage circuit U, for operating a measuring instrument or relay, is obtained by employing a current transformer having its primary winding connected to the circuit, in series with a condenser c, the instrument or relay being connected through a resonant circuit, C, L, Fig. 4, C1, C2, L, Fig. 5, and C, L1, L2, Fig. 6, to the secondary K1, K1 of the transformer, and the resonant circuit being such as to transform the approximately constant current flowing through the transformer primary winding to approximately constant voltage, irrespective, within limits, of the impedance of the instrument or relay.
Patent GB-518317-A (GB)
Title: Improvements in or relating to devices for introducing objects into the evacuated spaces of electron microscopes
IPC: H01J37/20
Filed: 1938-08-22
Abstract: 518,317. Electron microscopes. FIDES GES. FUR DIE VERWALTUNG UND VERWERTUNG VON GEWERBLICHEN SCHUTZRECHTEN. Aug. 22, 1938, No. 24688. Convention date, Aug. 24, 1937. [Class 39 (i)] An object is introduced into the evacuated space of an electron microscope by means of a valve plug 3 having a transverse aperture ; the object is contained in a cartridge 6 which is introduced into the aperture, brought into the operating position by rotation of the plug and finally displaced longitudinally against a yielding control, tending to maintain the cartridge within the plug aperture, such as spring 9, by means of a plunger 13 which is movable toward and away from the objective lens 2, until the object is in the required position for operation. The cartridge comprises object carrier rings 7, 8, main body with evacuating holes 20, and a retaining ring 22 having a set-screw 11 sliding in a groove 12 to prevent rotation and pressed upwardly by spring 9. The plunger 13 has a rack actuated by a pinion 16 on a suitably packed shaft 17. The object is introduced through a side aperture and the plug is first turned until tube 19 opens into a small side tube which evacuates it roughly before being turned to the operating position. Cooling channels 21 are provided. The Specification as open to inspection under Sect. 91 includes moving the cartridge by means other than a plunger, and not necessarily against a yielding control. This subject-matter does not appear in the Specification as accepted.
Patent GB-1274641-A (GB)
Title: Improvements in or relating to burners for flame spectroscopy
Inventor: KIRKBRIGHT GORDON FRANK
IPC: G01N21/72
Filed: 1968-05-23
Abstract: 1,274,641. Burners for spectroscopy. G. F. KIRKBRIGHT. 20 May, 1969 [23 May, 1968], No. 24697/68. Heading F4T. In a burner assembly for use in flame emission and absorption spectroscopy and comprising a burner head having one or more apertures 2 at which a flame can be supported, means for supplying gas to be burnt to the aperture or apertures, a circumferentially-extending opening which surrounds the burner head, and conduit means 3 for supplying inert gas to the opening, the conduit means 3 is so arranged that for a range of velocities of the inert gas leaving the opening, a lower part of the flame 10 adjacent to the burner head is shielded from the atmosphere by the inert gas so that the secondary zone 9 of the flame is spaced apart from the burner head. As shown, the conduit means comprises alternate layers of plain, 5, and corrugated, 6, strips, the longitudinal axes of the corrugations lying parallel to the direction of gas flow through the burner assembly and the strips being located between inner and outer walls of the conduit means. Alternatively, the conduit means may comprise a plurality of hypodermic needles. To produce a substantially flat flame, there may be a row of apertures (Fig. 17, not shown) or a single elongated aperture (Fig. 20, not shown), in the burner head, and in these cases the conduit means may be oval or rectangular in cross-section. Gas flowing to the burner head may be kept cool by the provision of a metal mass of high thermal conductivity in thermal contact with the head (Fig. 14, not shown), or by air or water cooling in the burner assembly. Inert gases used are nitrogen and argon, while suitable gases for burning are hydrocarbon/air and hydrocarbon/nitrous oxide mixtures respectively.
Patent GB-249382-A (GB)
Abstract: 249,382. Grandjean, G. March 2C, 1925, [Convention date]. Counting apparatus with variable-step movement.-Relates to the franking-machine described in Specification 235,905 and consists in improvements in the mechanism for driving the counter. The plain parts of the mutilated gear wheels 12 are provided with a ridge 50 of half the width of the teeth, and the pinion 13 coacting with the wheels 12 has every alternate tooth 54 cut away for half its width to a depth corresponding to the height of the ridge. This prevents rotation of the pinion 13 and consequent actuation of the counter when the pinion is opposite the plain part of a wheel 12, locking being effected when a tooth 54 rests on a ridge 50. In a modificaion, the wheels 12 are replaced by reciprocating racks having ridges 50 on their plain parts, the pinion 13 being constructed as before. A ratchet prevents reverse actuation of the counter.
Patent GB-732843-A (GB)
Title: Improvements in or relating to a device simulating the human eye for experimental orinstructional purposes
Inventor: BINSTEAD HUGH CECIL
IPC: A61B3/00
Filed: 1952-10-06
Abstract: 732,843. Model eyes. ALLIED INSTRUMENT MANUFACTURERS, Ltd. Oct. 6, 1953 [Oct. 6, 1952], No. 25034/52. Class 97 (1) In a model eye, used especially for training in the use of ophthalmological instruments, in which a hollow casing is shaped at B<SP>1</SP> to represent the retina and is provided with an aperture C covered with a transparent meniscus D representing the cornea and a lens F, the anterior and posterior chambers in front of and behind the lens, respectively, are filled with a transparent solid liquid or gas and the materials used for the meniscus and the lens are such as to scatter the incident light or otherwise to render a beam of light visible when viewed at an angle, e.g. by fluorescence. An iris E may be provided and preferably the anterior and posterior chambers are filled with water or other liquid. The casing may be made in two parts A, B which may be, as shown in Fig. 3, movable relative to one another, the movement being effected by forcing liquid into or out of the posterior chamber, through duct J, by means of a screw plunger M. In another form pressure is exerted on a liquid by squeezing a rubber reservoir. The anterior and posterior chambers may be sealed from one another by a rubber part of the lens mount or, if the same liquid is provided in both the chambers, they may be interconnected.
Patent GB-1380032-A (GB)
Title: Yarn for use as packing for rotating shafts
IPC: D02G3/44
Filed: 1973-05-25
Abstract: 1380032 Yarns E I DU PONT DE NEMOURS & CO 25 May 1973 [26 May 1972] 25135/73 Headings D1C and DIW [Also in Division F2] A mixed filament yarn comprises 50-80% by weight of (preferably bleached) polytetrafluoroethylene filaments and 50 - 20% by weight of aromatic polyamide e.g. poly (metaphenylene isophthalamide) filaments. The yarn may also comprise a coating, or successive coatings, of finely divided polytetrafluoroethylene particles and/or polyorganosiloxane. The yarn or a braid made therefrom may be used as packing material e.g. in a stuffing box, to reduce fluid leakage from around a rotating shaft. The respective filaments, preferably in the form of multifilament yarns, may be combined, as by plying and/or interlacing without twist: component yarns may differ as regards number of ends, filaments per end and denier.
Patent GB-1141886-A (GB)
Title: Bag filling machines
IPC: B65B1/16
Filed: 1966-06-06
Abstract: 1,141,886. Packaging-machines; pneumatic conveyers. BLACK PRODUCTS CO. 6 June, 1966 [11 June, 1965; 17 Dec., 1965], No. 25168/66. Headings B8A and B8C. Air pressure in a fluidizing chamber 12 feeding a bag filling spout 16 prevents material entering the chamber through a vertical pipe 13 until the spout is cut off by a valve 22 and the chamber simultaneously vented. A top pressure is maintained by passing low pressure air into the top of the chamber 12 through a pipe 24 via an air pump 28, regulating valve 29 and air valve 26. The material is fluidized so that it flows through the filling spout 16 and into a bag 19, by passing air through a pipe 21 connected to a diffuser pad (20) (Fig. 2, not shown) and when the bag 19 reaches a predetermined weight, a scale mechanism 15 is tripped to actuate a switch (41) (Fig. 4, not shown), which closes the air valve 26, the valve 22 in the bag filling spout 16 and a valve (23) in the air pipe 21. A valve 27 in a vent pipe 25 is opened to release the pressure within the chamber 12 causing the material 39 to flow through the inlet pipe 13 to once more fill the chamber up to the level of the bottom of the inlet pipe, whereupon the apparatus is ready for the next bag filling operation. A collapsible, rubber sleeve (51) (Fig. 5, not shown), to prevent air leakage may be connected to the inlet pipe 13, projecting from which are rods (54) to prevent inversion of the sleeve (51). Vertical slits (55) (Fig. 7, not shown) in the sleeve (51) facilitate collapsing of the sleeve during pressurization. Alternatively, air leakage may be prevented by a hinged flap (52) (Fig. 6, not shown) connected to the open end of the inlet pipe 13.
Patent GB-840689-A (GB)
Title: Improvements in or relating to waveguide switches
Inventor: SPEAKE GEORGE DAVID
IPC: H01P1/12
Filed: 1957-08-09
Abstract: 840,689. Waveguide switches. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. May 28, 1958 [Aug. 9, 1957], No. 25179/57. Class 40 (8). A waveguide switch comprises a rotatable conductive disc C positioned between two waveguides A, B and having an aperture C1 coinciding with the cross-sections of the guides, the aperture being bridged by one or more conductive members C2 which reflect the propagated energy when they lie parallel to the electric field and allow transmission when they lie normal to the field. The conductive structure C, C2 may be made of plastic material coated with a conductor. The disc C may be rotated by a rack-and-pinion mechanism. The whole of the switch may be enclosed in a pressurized box which may also contain a driving motor. The waveguides shown are of rectangular section and the members C2 extend parallel to the long dimension of the aperture C1. For better impedance matching the long dimension of the aperture C1 may be less than that of the waveguides. Two switches S1, S2 may be connected as shown in Fig. 3, in the arms of a pair of 3db couplers 1C, 2C. The other arms are connected to a transmitter T, a matched load L and to aerial feeders 1A, 2A.
Patent GB-239732-A (GB)
Title: Improvements in and relating to joints for log-houses and similar structures
IPC: E04B2/70
Filed: 1924-10-23
Abstract: 239,732. Paulsen, B. Oct. 23, 1924. Joints, carpenters' &c. -A joint for transverse logs in hut construction is formed by transversely recessing each log, providing the sides of the recesses 13 with grooves 14, 20 and the bottom of the recess with a projection 7 to engage corresponding projections and grooves 15, 22, and 8 respectively in a recess in the transversal log. The timbers are of the type provided with double tongues 3, 4 and double grooves of suitable wedge shape.
Patent GB-718110-A (GB)
Title: Carpet underlays of flexible resilient material
Inventor: SAUL WALTER
IPC: A47G27/04
Filed: 1951-10-30
Abstract: 718,110. Carpet underlays. SEMTEX, Ltd. Oct. 14, 1952 [Oct. 30, 1951], No. 25299/51. Class 142(4) A carpet underlay 2 of soft vulcanized rubber has a plurality of spaced embossments 3 an one side and a plurality of corresponding indentations 4 on the reverse side. The distance between the centres of adjacent embossments is about twice the diameter of their maximum cross-section and the height of the embossments is about equal to the thickness of the sheet, the maximum diameter of the embossments being two to four times the sheet thickness. The rubber may be natural or synthetic, may be expanded, and may contain a filler such as textile fibres, hair or cork. The embossments need not be circular but may, for example, be irregular or polyhedral. The indented surface may have a sheet of hessian secured thereto.
Patent GB-797274-A (GB)
Title: Improvements in or relating to miniature magnetic sound recording and reproducing device
Inventor: GENNING ERNST
IPC: G11B5/00
Filed: 1954-09-01
Abstract: 797,274. Centrifugal governors. PROTONA PRODUKTIONAGES FUER ELEKTROAKUSTISCHE GERAETE GES. Sept. 1, 1954, No. 25347/54. Class 57. [Also in Group XXXVIII] In a battery-operated portable magnetic wire recorder, alternative speeds are provided by means of a twospeed governor 23, Fig. 4, which is driven by an electric motor 20 and has centrifugally - operating weights 72a, 73 carrying electrical contacts 74a, 74 connected to slip-rings 27, 28, respectively. The spring 75a acting on weight 72a exerts a lesser pressure than spring 75 acting on weight 73, so that while switch 29 is open, the motor circuit tends to be broken at a lower speed than when switch 29 is closed and contact 74 is in circuit.