baber/WOPTO huggingface dataset:
Patent GB-263516-A (GB)
Title: Improvements in variable driving gear for paper-making and like machines
IPC: D21F7/02
Filed: 1925-09-17
Abstract: 263,516. Milne, S. Sept. 17, 1925. Driving - arrangements, variablespeed, for paper mills comprises a stepped epicyclic train controlled by cone-pulley belt gearing. Fast on a driving-shaft b is a cone-pulley j which carries stepped planet gears h, h<1>. The gears h mesh with a loose central gear e which is driven from the pulley j through belts p, m and a cone pulley unit k, w loose on the driven shaft a, which is adjacent and serves as a countershaft axle. There is also a clutch n in this control train which can be disconnected to stop the drive. The gears h<1> mesh with a loose central gear f, which is the driven epicyclic element and is connected by a chain pair o to drive the shaft a. The mill may be driven through a yielding coupling y which may comprise a single yielding plate d, or a pair of such plates secured together at their outer edges. Driving and driven shafts of this gearing may be interchanged. A slow reversed drive is obtained by allowing a hook-shaped pawl s, Fig. 2, reciprocated from an eccentric q, Fig. 1, on the shaft b to come into engagement with a ratchet-wheel r fast on the shaft a. The pawl s is normally held inoperative by a weight t<1> which is raised by a hand-lever t after the clutch n has been disengaged, to effect reversed driving.
Patent GB-1504328-A (GB)
Title: Electronic musical instrument
IPC: G10H1/053
Filed: 1975-05-28
Abstract: 1504328 Electronic musical instruments NIPPON GAKKI SEIZO KK 28 May 1975 [31 May 1974 (2)] 23275/75 Heading G5J A digital electronic musical instrument has one or more keyboards 1; a logic arrangement 2, 3 (Figs. 3, 4, not shown) for generating an address code representing a depressed key; a memory 10 which delivers a first numerical value representative of the desired nominal frequency on receipt of the corresponding address code; a glide function generator 7, 11 which generates on demand a steadily increasing second numerical value; a multiplier 13 which multiplies the first and second numerical values; an accumulator 5 which is repeatedly incremented by the value from multiplier 13; and a memory 6 which stores a representation of the required waveshape and produces an appropriate tone, steadily changing in pitch, in response to the output of the accumulator. The memory 6 stores the waveshape at 64 sampled numerical values so that a complete waveform is read from the memory for every 64 counts registered in the highest order 5c of the accumulator 5. The rate at which these 64 counts are received and therefore the musical note generated depends upon the value added into the lower orders 5a, 5b of the accumulator at each clock period which in turn depends on the value read from the read only memory 10 to represent the nominal frequency and the multiplier derived from generator 11 which steadily increases over a period of 1 second after the operation of a key whereby the pitch of the note varies from about a semi-tone below the nominal frequency up to it. Means may be provided for setting the initial deviation to a lesser value. An envelope memory 21 is provided to control the attack and delay portions of the note played and this is read in a similar way to the waveshape memory. In a modification (Figs. 12-16, not shown) the frequency is increased only during the attack period remaining at the nominal frequency during the sustain and delay. The apparatus as described operating on a time sharing basis.
Patent GB-335319-A (GB)
Title: Improvements in or relating to telephone instruments
IPC: H04M1/02
Filed: 1929-07-29
Abstract: 335,319. Pollak, J. E., (Associated Telephone & Telegraph Co.). July 29, 1929. Binding-posts and terminals; couplings. - A terminal block for mounting on the false base of a telephone set, so that the soldered connections lie beneath the base, comprises a plate 9 which is secured over an aperture in the false base. The plate is provided with a series of apertures to receive terminals 35. These have each a threaded hole to receive a terminal screw 34, soldering tags which project below the false base and projections 36 which are bent up to lock the terminals to the plate.
Patent GB-469284-A (GB)
Title: A camera for making several exposures on the same plate
IPC: G03B19/02
Filed: 1936-08-25
Abstract: 469,284. Photographic cameras. GRINSPUN, J. Aug. 25, 1936, No. 23362. [Class 98 (i)] A camera for taking several pictures consecutively on a single plate comprises an objective with a shutter, ratchet bars for feeding the plate horizontally and vertically controlled by a single operating member, means for setting the shutter from the same operating member, and means for indicating when a complete row and also when all the exposures have been made. The camera is divided by a partition B<1>, Fig. 5, into two compartments, the compartment A containing the lens 120 and shutter, and compartment A<1> the plate-actuating mechanism. The dark slide is mounted to slide on vertical rods 25, Figs. 1 and 5, carried by a horizontally moving frame 3 mounted on rods 1. The frame 3 is moved to the left, Figs. 1 and 3, by a spring 5, and retained in position by a pawl 14 engaging teeth on a rackbar 12. Step by step release is provided by a push button 24. On completion of the travel of the frame 3 to the left, the end of the pawl 14 engages a bell-crank 41 to actuate a pawl 34 engaging teeth in a vertical rack-bar 31 carried by the dark slide, thus lowering it one step. The completion of a movement to the left is signalled by a projection 58 closing the circuit of an electric lamp 59 mounted in the neighbourhood of the view-finder 114. The frame 3 is returned to the right by pulling a cord 8. The shutter is set on pressing the button 24, Fig. 2, which moves a bell-crank 105 to actuate shutter-setting mechanism through spring-pressed rods 102, 98. When set the button 24 is locked by a tooth 75 thus preventing further movement of the plate. The shutter is released by pressing a button 88 which also withdraws the tooth 75 by links 73, 73, 71 and the button 24 is returned by a spring 78. When all exposures are made a contact 67 is closed in a buzzer circuit, and the frame contacts with a weight 48 on a cord 50 by which the slide may be returned to its initial position. The shutter 108 of the dark slide is engaged by a recess in the partition B<1> so that as the slide descends successive strips of the plate are uncovered and when the frame is drawn up the slide is closed prior to removal. The finder 114 is hinged on the casing and provided with a scale of distances 118 to allow for parallax. If an everset shutter is used the device for shifting the slide and exposing the plate are simultaneously operated by the button 24. The locking device for ensuring a single exposure on each strip is omitted while the setting device is used for releasing the shutter, the arrangement being such that the shifting of the slide cannot be effected unless a previous exposure has been made. A meter, actuated by the counterpoise 54, may be provided to indicate how many exposures have been made.
Patent GB-719980-A (GB)
Title: Improvements in or relating to push-pull circuits for amplifying or generating radio-frequency oscillations
IPC: H03F3/54
Filed: 1952-09-18
Abstract: 719,980. Valve amplifying and generating circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 18, 1952 [Sept. 21, 1951], No. 23456/52. Class 40 (6) An oscillator or tuned amplifier for generating or amplifying high-frequency oscillations comprises a plurality of pairs of valves connected in push-pull, each valve pair having a separate tunable grid circuit and the anodes of all the valves being connected to a common tuned anode circuit. An oscillator comprises valves 1, 2 having their grids connected in push-pull to adjustable tuned circuit 3 and valves 4, 5 having their grids. connected in push-pull to adjustable tuned circuit 6. The tuned anode circuit comprises Lecher wires 11, the anodes of valves 1 and 4 which are excited in phase being connected to one terminal of the anode circuit while the valves 2 and 5 which are also excited in phase being connected to the other terminal of the anode circuit. Optimum conditions for obtaining maximum output are obtained by tuning circuits 3 and 6.
Patent GB-777900-A (GB)
Title: Alkyl ethers of podophyllum glucosides and process for their manufacture
IPC: C07H17/04
Filed: 1955-08-15
Abstract: The invention comprises compounds of the general formula <FORM:0777900/IV(b)/1> (wherein R1 represents an alkyl or alkenyl group of 2-6 carbon atoms, and of R2 and R3 one represents hydrogen and the other O-glucose), and the preparation thereof and of the compounds in which R1 is methyl by the action of a diazoalkane or diazoalkene containing 1-6 carbon atoms in the molecule on the corresponding compounds in which R1 represents hydrogen.  The reaction is preferably carried out with an ethereal solution of the diazo compound at about 0 DEG  C.  The products have an antimitotic action.  Examples describe the treatment of 41 - demethylpodophyllotoxin - glucoside with (1) diazomethane, (2) diazoethane, (3) diazopropane, (4) diazobutane, (9) diazoisopentane and (10) diazohexane, and of a -peltatin glucoside with (5) diazomethane, (6) diazoethane, (7) diazopropane and (8) diazobutane. Diazopropylene is mentioned as a suitable diazoalkene.  Starting material.  41-Demethyl-podophyllotoxin glucoside is obtained from the rhizomes of Podophyllum by extraction with chloroform and then methanol, dilution of the concentrated methanolic extract with water, precipitation of tannins with lead acetate, concentration of the remaining liquor, treatment with chloroform and finally extraction of the glucoside from the aqueous phase with n-butanol followed by purification by chromatography or partition methods.  Specifications 768,919 and 777,662 are referred to.
Patent GB-733970-A (GB)
Title: Power transmitting mechanism
IPC: F16H25/22
Filed: 1953-08-26
Abstract: 733,970. Door-operating apparatus. EATON AXLES, Ltd. Aug. 26, 1953 [Sept. 13, 1952]. No. 23543/53. Class 65(1). [Also in Groups X and XXIV] Screw and nut actuator mechanism, such as for windows, &c. of automotive vehicles, comprises a motor 106, Fig. 4, which drives, through worm reduction gear 128, a screw 108, the screw having a double thread and being arranged to actuate a nut 110 which has on its inner surface a number of spaced annular grooves, the grooves of the screw and nut being interconnected by a number of balls held in openings in a sheet metal cage which is interposed between the screw and nut so that the balls undergo a planetary motion causing translation of the nut. In an application to the lid of the vehicle luggage trunk, Fig. 1 (not shown), the nut is linked to the lid and the screw and worm gear are reversible to allow the lid to be moved by hand if the power fails.
Patent GB-204335-A (GB)
Title: Improvements in or relating to apparatus for extracting oil from shale or the like
IPC: C10G1/02
Filed: 1923-09-20
Abstract: 204,335. S. E. Co., (Assignees of Wallace, G. W., and Davis, D. J. L.). Sept. 20, 1922, [Convention date]. Discharging.-The base of a vertical retort is closed by an inclined oil receptacle 7 which carries a grate 6 and is mounted on wheels 8 so that it may be withdrawn, by means of a screw 12, in order to discharge the retort. The shale &c. is distilled by a descending combustion zone, and a tube 10 conveys the oil from the receptacle to an outlet pipe 11. In a modification, the receptacle is horizontal and mounted by means of pinions on inclined racks.
Patent GB-1163839-A (GB)
Title: Tungsten Powder Bodies Infiltrated with Copper-Titanium-Bismuth or Copper-Titanium-Tin
IPC: C22C9/00
Filed: 1967-05-26
Abstract: 1,163,839. Tungsten infiltrated with copper alloys. MALLORY METALLURGICAL PRODUCTS Ltd. May 26, 1967 [May 26, 1966], No. 23580 /67. Heading C7D. A W-Cu-Ti-Bi or a W-Cu-Ti-Sn composite suitable for use as an electrical contact in a vacuum switching device is made by vacuum infiltrating either a green or presintered W compact with either a Cu-Ti-Bi alloy or a Cu-Ti-Sn alloy. The W compact is made from 1-10 micron powder which is compacted at 20-35 t. S. i. and optionally presintered at 1250 C. in hydrogen. The infiltrant Cu alloy may contain 0À1-0À25% Ti and 5-12À5% Bi or 0À1-0À25% Ti and 5-12À5% Sn. Vacuum infiltration is effected at 1200-1450 C. at 10<SP>-5</SP> torr. In an alternative embodiment the green or presintered W compact may be coated with Ti by electro-plating or vapour phase plating and then infiltrated with Cu-Bi or Cu-Sn.
Patent GB-994047-A (GB)
Title: Improvements in or relating to fuel meters
IPC: G01F9/00
Filed: 1960-07-06
Abstract: 994,047. Reciprocating pumps. A. E. R. ARNOT. July 4, 1961 [July 6, 1960], No. 23582/60. Heading F1A. [Also in Division G1] A fuel-consumption metering apparatus, which controls the fuel supply to an internal combustion engine according to its output, has a fuel inlet 72, an outlet 70 to the carburetter, a pumping chamber 3, and a spring-loaded variable-stroke piston 30 (described in more detail below) actuated by an eccentric bearing 2 on a shaft rotated e.g. by the speedometer drive if the output in question is distance travelled by a vehicle driven by the I.C. engine. Initially, a valve-member 51 loaded by a weak spring 49 is in the open position and the pumping chamber communicates, via valve 50, with the outlet 70 and (via grooves in the member 51) a variable space 5 bounded on its lower side by a deformable diaphragm 41 fixed to a plunger 45 which is biased upwardly by spring 46. In this initial state, the plunger 45 has risen to its fullest extent: the button 44 deflects spring 47 to allow the valve member 51 to rise; and a wedgeshaped member 4, which is carried by the plunger, and through a slot in which the piston 30 passes, gives maximum clearance for abutment shoulders of the piston thus allowing a maximum length of stroke. The corresponding maximum pressure is in excess of the maximum engine requirements and acts on diaphragm 41 to lower the plunger 45 and the wedge 4 until the piston stroke is such as to give balance between fuel supply and consumption. Valve 50 is now closed and the engine is supplied with fuel pumped by piston 30 (at a pressure considerably greater than the input pressure at 21) through valve 63 which is biased to a closed position by bellows 65 communicating with atmosphere. The bellows act to take up random excess pressure. If the pressure drops (through static friction in the mechanism etc.,) plunger 45 will rise to maintain the flow of fuel. The position of the wedge 4 is used to indicate the rate of fuel consumption by means of a Bowden-like cable 52 connected (see Fig. 3) to a shaft 108 (99) carrying a tightly coiled helical spring 105 which, on being allowed to extend from a "zero" position, will rotate at its free end taking with it a nut 104. The latter is fixed to a cylindrical drum 83 on which is marked a calibration curve 84. As the drum rotates the curve will coincide with different markings on a fixed scale graduated, for example, in miles per gallon. As a safeguard, if the delivery of fuel is excessive, the resultant pressure rise will compress bellows 65 and allow fuel to pass through a valve 63 without a cumulative pumping effect. Alternative piston assemblies to fit the same body 1 may be chosen to suit a particular vehicle. A modification for diesel engined vehicles is also described and applications to ships and electricity generating sets are mentioned.
Patent GB-679729-A (GB)
Title: Improvements in or relating to ventilators
IPC: F24F13/12
Filed: 1949-09-13
Abstract: 679,729. Ventilators. GILBERT, L., and HOBSON, L. J. Sept. 12, 1950 [Sept. 13, 1949], No. 23639/49. Class 137 An opaque, translucent, or transparent, ventilator comprising male and female units, in which the air passes through passages formed by co-operating projections and recesses on adjacent units, is characterized in that the sides of the projections blend into the adjacent supporting faces with smoothly flowing lines, and the projections are provided with grooves for the reception of fly screens. The ventilator is an improvement on that described in Specification 583,552. The unit comprises rectangular glass units 1, 2, 3 having recessed undersides, the units 1, 2 being provided with longitudinal projections 4, 4. Shutter blades 10, 11 are vertically adjustable by a handle 28, lifting arms 22, 22, carrying the blades 10, 11, each being secured at one end to the handle. A bolt 27 secured by nuts 34 within the handle 28 is slidable in a bush 37 carried by a clip' 26 having arms for engaging the member 2, a spring 42 housed in a recessed nut 41 providing a clutch engagement for securing the handle in its adjusted position. In an alternative arrangement, Fig. 8, grooves. 157, 158 on the under faces of the units 147, 148, and grooves 154 on the projections 149 carry fly shields 161, the shutter blade 164 having openings 165, is operable in a guide member 166, and the space 151 beneath the member 146 is closed by a plate 163. Figs. 6 and 7 show examples of other units which may be used.
Patent GB-1172011-A (GB)
Title: Method for the Production of Helically Crimped Filaments
Inventor: CLARKE BARRY HENSON
IPC: D01F8/04
Filed: 1967-05-22
Abstract: 1,172,011. Crimped filaments. IMPERIAL CHEMICAL INDUSTRIES Ltd. 13 May, 1968 [22 May, 1966], No. 23672/67. Heading B5B. A method for the production of helically crimped filaments, each consisting of at least two polymeric materials arranged in eccentric relationship over the cross-section thereof, comprises forming as-spun composite filaments into a tow, inducing crimp in the filaments of the tow, developing the crimp in the filaments by relaxing the tow while it contains at least 10% by weight of a liquid wetting agent, and subsequently treating the tow to enhance the development of the crimp. The crimp may be induced in the filaments by subjecting the tow to a stretching or drawing treatment, and the crimp may be enhanced by subjecting the tow to a heat shrinkage treatment or a heat setting treatment. Suitably, the tow is saturated with the liquid wetting agent. The tow of crimped filaments may be cut to produce staple fibres, or in a modification, the tow of filaments may be cut into staple fibres prior to the treatment for enhancing the crimp. Specified materials include polyamides and polyesters, and their copolymers, and addition polymers, for example polyolefins. Composite filaments of both the side-by-side and the sheath-core variety may be used. The presence of the liquid wetting agent appears to cause adhesion between adjacent filaments and the tow, so that many filaments crimp together in register during development of the crimp as the tow is allowed to relax. This registration between the filaments produces a predominantly torsional restraint which inhibits the further development of the crimp, especially of the number of crimps per inch, in contrast to known methods wherein the filaments crimp individually upon relaxation. Generally, the polymers used in forming the components of the precursor composite filaments have differing intrinsic viscosities, but in some polymeric systems, especially poly-alphaolefins, two polymers having the same intrinsic viscosity can still have differing melt viscosity behaviour, if the two polymers have different molecular weight distributions. This shows itself by the fact that they have different Melt Flow Indices. The method of the invention may also be applied to bi-component filaments composed of two such polymers. A convenient liquid wetting agent is water, which may contain additives either dissolved or dispersed therein, e.g. textile finishing agents. The composite filaments may be supplied directly from one or more spinnerets or from bobbins. Examples are given. Filaments so made are characterized by a high crimp index, the average value for the filaments being in excess of about 40%, and by a low number of crimps per inch, i.e. the average value is less than about 25, the number being expressed per inch of filaments when crimped; the filaments are thus especially useful as filling materials. Examples relate to the production of crimped filaments of polyethylene terephthalate and of polypropylene.
Patent GB-1128641-A (GB)
Title: Improved flat cell pack battery
IPC: H01M6/46
Filed: 1966-05-26
Abstract: 1,128,641. Flat cell pack battery. DOW CHEMICAL CO. 26 May, 1966 [1 June, 1965], No. 23696/66. Heading H1B. A flat cell pack battery comprises a top metal plate 34 and bottom metal plate 26, one of which is a Mg or Mg alloy anode plate 26, the other being a cathode collector plate 34, and a plurality of anode plate/cathode plate assemblies disposed in spaced apart relationship between the top and bottom plates, each assembly comprising an anode plate and a cathode collector plate having a layer of a compressible cushioning material 24 sandwiched therebetween, each cathode plate having a moisture impervious electrically conductive carbonaceous coating on the entire surface facing the anode plate, at least one face of each electrode being in electrical contact with a cathodedepolarizer mix cake (46, 48, 50), each cake being surrounded by a porous envelope on all sides except the side contacting the cathode plate, each envelope and mix cake being moistened with an aqueous electrolyte, the anode and cathode plates of each assembly being electrically connected, the battery assembly being disposed in a fluid impervious housing 10 and having a pair of electrical leads 40, 28, coupled to the top and bottom plates and extending through the housing. The cushioning material is preferably expanded polystyrene or P.V.C. The cake mix is an electrolytemoistened mix of MuO 2  and C black compressed or moulded into a cake, the preferred electrolyte being an aqueous solution of an alkali metal, alkaline earth metal or ammonium bromide, (MgBr 2  being preferred) and desirably an alkali metal, alkaline earth metal, or ammonium, salt of chromic acid.
Patent GB-647690-A (GB)
Title: Electric motors and electric motor control systems
IPC: H02P25/24
Filed: 1948-09-09
Abstract: 647,690. Dynamo - electric machines. SCAIFE, F. N., and BUCKINGHAM, J. Sept. 9, 1948, No. 23710. [Class 35] [Also in Group XXXVII] A polyphase commutator motor has a singlephase tapping on its rotor so that it may be switched from its normal motoring connection to operation as the receiver of a single-phase. Selsyn system for inching. In the " Auto " position of switch s both the stator windings 1, 2, 3 and the commutator brushes 5, 6, 7 are fed from a 3-phase supply for normal running. In the "Hand" position, the stator is connected to the stator of a hand driven Selsyn 11, whilst the rotor is fed through slip-rings and brushes 9, 10 from the single-phase supply, a transformer T and resistance R being inserted to limit the current.