baber/WOPTO huggingface dataset:
Patent GB-692541-A (GB)
Title: Improvements in tuning means for ultra-high frequency apparatus
IPC: H03J5/32
Filed: 1946-01-30
Abstract: 692,541. Valve circuits for radio reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 30, 1946 [Jan. 30, 1945], No. 2988/46. Class 40 (v). A tuning arrangement for ultra-highfrequency radio apparatus includes a balanced line comprising a munber of pairs of seriallyconnected inductances, arranged so as to minimize mutual coupling between the seriallyconnected inductances and between the members of the pairs of inductance, and selective switching means for connecting together corresponding terminals of the pairs of elements to adjust the tuning of the line. Fig. 7 shows an U.H.F. receiver comprising a push-pull R.F. amplifier with the input connected to the heaters of valves 1, 3. The output circuit of amplifiers 1, 3 comprises a number of seriallyconnected binocular windings 53, 97 and 45, 91 forming a balanced line terminated by an inductance 127. The grid circuits of double triode mixer 5 includes pairs of binoculare windings 49, 57 and 93, 99 forming a balanced line terminated by an inductance 129 and coupled to the anode circuit of the R.F. amplifier and to a third balanced line 65, 101, 61, 95 forming the tuned circuit of the local oscillator 7. Additional coupling between the R.F. amplifier and mixer is provided by condensers 139, 137, as described in Specification 20948/45, (as open to inspection under Sect. 91). The balanced line 65, 101, 61, 95 forming the anode circuit of the local oscillator 7 is tuned by a push-button operated trimmer condenser 167, Fig. 2 (not shown), which may be shunted by a condenser 169 with a negative temperature coefficient. Inductive back-coupling to the grids is provided by a continuous conductor 163, the centre point of which is earthed. Corresponding terminals of each pair of inductances are shorted by ganged switches 81, 123 to tune the lines. A corresponding pair of inductances 53, 45; 57, 49; 65, 61 from each line is wound one on each side of an insulating support 15, Fig. 4, provided with fixed contacts 47, 51, 63 and movable contacts 83, 85, 87 operated by a push-button 81. Fig. 8 shows the construction of a push-button mechanism, each pushbutton 185 adjusting the position of contact members 213 by means of a pivoted lever 201 and arm 209. A spring-biased detent bar 197 is provided with projections R co-operating with notched collars C on the push-button operating rods to hold any push-button in its operated position till another button is pressed. Fig. 9 shows an alternative push-button mechanism, each push-button 225 operating all the buttons to its right by bars 241. A general release button 233 is provided. 'The tuning mechanism may comprise a push-button arrangement according to Specification 692,544, in which each button has two operative positions, Fig. 10 (not shown).
Patent GB-370091-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: H02P7/34
Filed: 1931-01-30
Abstract: 370,091. Maintaining defined speeds of D.C. motors. . WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.-(Assignees of Eames, W. F. ; 1128, East End Avenue, Edgewood, Pennsylvania, U.S.A.) Jan. 30, 1931, No. 3051. Convention date, Feb. 15, 1930. [Class 38 (iii).] Varying E.M.F. ; regenerative braking.-In a Ward-Leonard control system, the effect of a resistance connected to the generator field, is regulated by means responsive to the algebraic sum of the voltages of an auxiliary generator driven by the motor, and an auxiliary supply, the arrangement being such that the excitation of the generator is temporarily increased or decreased above or below its final value whilst the motor is accelerated or decelerated respectively, to a corresponding desired constant speed. A motor M, supplied from a generator G, drives an auxiliary generator 7, the field 7f of which, together with the field Gf of the generator, is supplied from an exciter E. When a controller 9 is moved one position anticlockwise, a contactor 1 closes connecting a resistance R across mains L1, L2, and energizing the fields Gf and 7f. The generator G now supplies current to the motor M which accelerates until the voltage of the generator 7 is greater than the voltage between a point 18 of the resistance R, and the line L2, by an amount sufficient to operate a relay 8, to insert a resistance r2 in the generator field circuit Gf. The main generator voltage and the motor speed fall slightly but the contacts 8d, 8f of the relay 8 vibrate to maintain the motor speed constant. Movement of the controller 9 to its second position energizes a contactor 3 to short-circuit a section of the resistance R so that the resistance r2 is again definitely removed until the motor speed builds up to a second value. A time after the contactor 3 closes, a second contactor 4 is closed, and a third step of motor speed is made. Further acceleration is obtained in a similar manner by a further movement of the controller 9 to energize the contactors 5, 6 in timed sequence. With an overhauling load, the motor M returns power to the generator G and the contacts 8d, 8e of the relay 8 vibrate to regulate a resistance r1 in shunt to the field Gf, and maintain the motor speed constant at a low value. When the controller 9 is returned to its central position, the relays open in timed sequence in the following order : 5, 6, 3, 4, 1, and the motor is brought to rest. Demagnetizing coils 3d, 4d, 5d, 6d on the relays 3-6 may be simultaneously adjusted for adjusting the time intervals by means of a resistance r7.
Patent GB-817434-A (GB)
Title: Improvements relating to a stabilizer for reducing the rolling motion of ships
IPC: B63B39/02
Filed: 1957-01-29
Abstract: 817,434. Anti-rolling devices. SCHWEIZERISCHE LOKOMOTIV UND MASCHINENFABRIK. Jan. 29, 1957 [Feb. 2, 1956], No. 3091/57. Class 113. In a stabilizer for damping the rolling motion of ships including a travelling truck used as stabilizing mass and reciprocated along one or more toothed racks by means of a driving device comprising one or more driving units, each unit is operatively connected to a toothed rack at points spaced longitudinally thereof by driving gears coupled by a power transmission gear train and associated with devices for equalising the tooth pressure. In the embodiment shown two trucks 1 coupled together at 40 and travelling on athwartship rails 3 each carry two driving units comprising electric motors 4, 5 connected to an equalizing (differential) gear 7, the bevel gears 8 of which drive a pinion 9 engaging gears 10 of two gear transmission trains 10, 11, 12. The gears 11 and 12 are connected each to a driving gear wheel 13 by means of a resiliently yielding connection (e.g. coil springs). Gear wheels 13 mesh in pairs with an athwartship toothed rack 14 at two contact points a distance a apart. Thus each driving unit is connected to its associated track, the units on each truck and on adjacent trucks being interconnected via bevel gearing and shafts 38, 39. The ship's stabilizing control apparatus controls the driving motors 4, 5. Due to the differentials 7, when sais motors rotate at the same speed the trucks remain stationary, but a difference in speed between the motors causes movement of the trucks.
Patent GB-1452441-A (GB)
Title: Apparatus for producing a body of porous thermoplastic material
IPC: B29C47/00
Filed: 1974-01-23
Abstract: 1452441 Double belt machines; foam casting GULLFIBER AB 23 Jan 1974 [2 Feb 1973] 03147/74 Heading B5A A continuous length of thermoplastic foam is cast by introducing foamable granules into the channel 24 between upper and lower endless belts 10, 12 which run on rollers 14, 16, by means of a feed box 32, 34 which comprises upper and lower walls 40, 46 which converge towards the entrance of the channel 24, and upper and lower rows of nozzles 64, 72 positioned in the rear walls for the introduction of the granules by means of a non-condensable carrier gas. The sides of the channel 24 are defined by guide plates 26 between the belts. A lower part 34 of the box is stationary and the vertical walls are overlapped by those of an upper part 32 which is secured to the upper roller to follow the upper belt when adjusted in height. Seals which allow the carrier gas but not the granules to escape are placed between the parts of the box and between the box and the belts. Gas also escapes through holes 18 in the belts. Flexible pipes 66, 74 and 68, 76 supply granules and compressed air at room temperature to the nozzles and flaps 80, 82 distribute the incoming granules. Plastics or metal wires or nets may be passed through openings 60 in the box and into the foam. The granules between the belts pass through steam boxes (not shown) where steam under slight overpressure is applied to expand and fuse the granules, and through cooling devices, not shown.
Patent GB-138619-A (GB)
Title: A vacuum insulated vessel
IPC: A47J41/02
Filed: 1919-06-02
Abstract: 138,619. Mantle Lamp Co., (Assignees of Simonson, W. W., and Blair, L. van D.). June 1, 1918, [Convention date]. Stoppers, plug; stoppers, screw.-The fusible adhesive jointing compound described in Specification 127,824, consisting of a preparation of lac or shellac treated by heat to raise its temperature of fusion and increase its adherent properties, is employed for closing the exhaust aperture of a vacuum-insulated stopper for a vacuum-jacketed vessel. In a spherical vessel provided with a onepiece vacuum-insulated stopper L, Fig. 8, the exhaust aperture X<1> is sealed with the jointing-compound and protected and obscured by a cap M. Another form of vessel, the parts of which are united by the same compound, is closed by a cork and a cap M, Fig. 1, screwed on to a protecting ring I fitted to the neck of the outer wall of the vessel.
Patent GB-562720-A (GB)
Title: Improvements in and relating to cutlery and like cases
IPC: A47G21/14
Filed: 1943-02-27
Abstract: 562,720. Cutlery &c. cases. MORTON, J. A. Feb. 27, 1943, No. 3225. [Class 18] A cutlery &c. case has a slotted or recessed article-supporting rack 1 mounted therein so as to project beyond the body of the case, surfaces 5a of the projecting portion engaging the lid to-retain it closed. The rack may pass centrally from front to back or laterally along the front and back walls. It may be made of slightly resilient material and may be covered with textile.
Patent GB-1536065-A (GB)
Title: Ignition circuit for ammunition
IPC: F42C13/00
Filed: 1977-01-27
Abstract: 1536065 Fuzes for scatter ammunition DIEHL 27 Jan 1977 [28 Feb 1976] 03266/77 Heading F3A A fuze for scatter ammunition, especially hollow charge mines which are suspended from parachutes and right themselves on landing with the aid of extensible legs, provides for the ambush of metal vehicles by the laid ammunition but, should the vehicle be detected by the fuze during the descent phase of the ammunition and be within the destructive range of the ammunition, the fuze will fire the ammunition to destroy the vehicle from overhead. The fuze comprises an electrical igniter 1, an ignition circuit 3, an OR gate 5, an AND gate 7, an OR gate 29, an impact or distance sensor 9 for ensuring firing within the destructive range of the ammunition, a time switcn 10, a metal detector 8 for sensing the presence of a vehicle, and an ambush sensor 6. During the descent phase of the ammunition, the gate 7 is switched to cause firing only upon the receipt of simultaneous signals from both the sensors 9 and 8. The laid ammunition is fired when the gate 5 is switched by the sensor 6 which may be a scratchwire, pressure, acoustic or metal sensor. The sensor 9 may be an opto-electronic device or a piezo-electric element mounted on a precursory member. The time switch 10 provides for timed self-destruction. In a modification, the metal detector 8 also acts as the ambush sensor and obviates the need for the sensor 6.
Patent GB-988877-A (GB)
Title: Plastic cups and other containers, their manufacture and apparatus therefor
Inventor: CAINE JAMES ROBERT
IPC: B29C51/22
Filed: 1962-01-26
Abstract: 988,877. Nestable cups. HAVEG INDUSTRIES Inc. Jan. 26, 1962, No. 3373/62. Heading A4A. [Also in Division B5] A plastics cup formed by a plungerassisted vacuum moulding process (see Division B5) comprises a thick bottom and lower wall section 268 and 269 respectively, a thinner middle wall section 267, and a thick top wall portion 266 having a lip 270. The middle wall portion is corrugated and stepped as shown at 262, 264, 265, the corrugations providing an increased resistance to deformation of said middle wall portion and a decreased heat transfer to the person gripping the cup.
Patent GB-393693-A (GB)
Title: Improvements in or connected with the manufacture of food for animals
IPC: A23K1/16
Filed: 1932-02-05
Abstract: Megasse is crushed or disintegrated and mixed with cod liver oil or other oils or fats, the mixture then being mixed with other granular or pulverulent food stuffs such as meals.  The megasse permits the oil or fat to be uniformly distributed through the foodstuff.
Patent GB-759712-A (GB)
Title: Improved or modified falsework support for use in building construction
IPC: E04G17/16
Filed: 1950-11-30
Abstract: 759,712. Girders for supporting ceiling shuttering. HINZE, O. Nov. 30, 1950, No. 3488/54. Divided out of and Addition to 759,691. Class 20(2). The falsework carrier for ceilings and floors of the parent Specification is provided with an end element constructed so as to be continuously adjustable in length of two parts 1a, 1b adjustably connected by pins and slots 1d, the part la being connected to the falsework carrier 7 and the part 1b having a leg 2 carrying a hook 3 adapted to engage the wall, scaffolding &c. which supports the falsework. The part 1a abuts the upper chord 7 of the falsework and is connected to it by a clamp 9 and is also connected by rods 13, 14 and an adjustable turnbuckle 10 to the lower chord. The leg 2 is angularly adjustable by means of a link 5.
Patent GB-1418764-A (GB)
Title: Transmission
IPC: F16H63/20
Filed: 1973-01-23
Abstract: 1418764 Change-speed control TOYOTA JIDOSHA KOGYO KK 23 Jan 1973 [24 Jan 1972] 3492/73 Heading F2D In a transmission having a first fork shaft for engaging forward ratios and a second fork shaft for engaging a further forward ratio and reverse, a selector engageable with recesses in the fork shafts has biasing means defining non-aligned first and second travel paths through which it is moved for actuating the second fork shaft, and restricting means are provided whereby when the selector is positioned in the first travel path it can be moved only between positions establishing the forward ratio and neutral, reverse being selectable only after further transverse movement of the selector against the biasing means to the second travel path. In one embodiment a selector lever 2, held in a spherical socket 4 by a spring 7, is selectively engageable with recesses 12, 13, 14 in the ends of fork shafts 9, 10, 11 which have interlocking means 15, 16. First and second ratios are established by the shaft 9, third and fourth by the shaft 10, and fifth and reverse by the shaft 11. The lever coacts with a plate 21 supported at one end by a set-bolt 22 and slidable at the other end on a shaft 23 so that when the lever is moved towards the recess 14 it encounters resistance as a spring-loaded ball 28 rides up a ramp 25<SP>1</SP>a. When a further ramp 25<SP>11</SP>a engages the ball the lever is positioned so that it engages portions 13b, 14b of the recesses 13, 14 and cannot therefore move the shaft 11 to the left to establish reverse ratio but is enabled to move the shaft 11 to the right to establish fifth ratio by engagement with a portion 14a of the recess 14. Reverse is engageable only after further movement of the lever 2 to overcome the additional resistance provided by the ramp 25<SP>11</SP>a. A modification has a spring-loaded plunger in the recess 14 instead of the plate 21 and ball 28. In a further modification the fork shafts are operated by an arm on the end of an intermediate shaft the other end of which is connected to the selector lever and spring-biased to the third and fourth ratio position, and a spring-loaded plunger in the recess of the fifth and reverse fork shaft, or in the casing, coacts with a cam on the arm to provide the resistance to reverse ratio selection. When the plunger is in the casing it may operate a reversing light switch.
Patent GB-1071340-A (GB)
Title: Improvements in or relating to apparatus for making gramophone records
Inventor: PHILLIPSON ALAN
IPC: B29C45/73
Filed: 1965-01-27
Abstract: 1,071,340. Injection moulding gramophone records. DECCA Ltd. Nov. 23, 1965 [Jan. 27, 1965], No. 3530/65. Heading B5A. A gramophone record is made by a method comprising injecting a material such as that described in Specification 1,071,331 through a nozzle 20 into a gap between a movable die 12 and a fixed die 10, moulding the material as described in Specifications 1,071,332, 1,071,333, 1,071,334 and 1,071,335, and then removing the die 12 with the record attached thereto, air being injected in synchronism with the movement of the die 12 through six orifices 32, each of one thousandth of an inch diameter, into the gap between the record and the fixed die 10 to break the vacuum. The dies are maintained at the same temperature (65‹ F. at the inner periphery, 120‹ F. at the outer) by water circulating through annular channels 23, 25, 28 therein the record is removed by ejector pins 21 which withdraw automatically as soon as the record is released by a method described and claimed in Specification 1,071,341. Attraction of the released record to either die due to electrostatic forces is obviated by blowing ionized air over the record, as described and claimed in Specification 1,071,337. The record may be embossed with a sound track or may be a blank disc for use in a two-part process by use of suitable matrices 14, 15.
Patent GB-1537361-A (GB)
Title: Housing for a lamp for an optical projector
IPC: G03B21/16
Filed: 1976-01-29
Abstract: 1537361 Projector lamp housings EASTMAN KODAK CO 29 Jan 1976 [29 Jan 1975] 03573/76 Heading G2J [Also in Division F4]  A projector lamp has a housing 1 made of material which is transparent to infrared radiation and is coated on its inner surface with particulate material which reflects visible light but transmits infrared rays. Housing 1 fits over an assembly including a lamp 20, a reflector 22, condenser lenses 14, 16, an infrared filter 18, enclosed in a support 24, which may be made of material transparent to  infrared radiation. A sheet 34 has a gate aperature  for film lying between sheet 34 and a sheet 12 supporting a projection lens 27. A fan 26 draws in air through holes 2 in housing 1 (when in place) and blows it over the lamp &c. and out through slits 3. The material of housing 1 transmits about 70% of the infrared radiation emitted and may be transparent to visible and infrared rays and the housing may be coated on the inside with TiO 2  dispersed in a cellulose nitrate binder: the size of the TiO 2  particles and the refractive index of the binder being chosen to maximize reflection of visible rays and to minimize reflection of infrared rays. The housing may be made of infrared transmitting epoxyresins, polyethers or polyolefinic materials e.g. polyethylene or polypropylene. The coating may be an evaporated coating. A dye may be added to the material of housing 1 to render it opaque to visible rays or transparent to infrared rays.
Patent GB-310997-A (GB)
Title: Improvements in or relating to wireless loud speakers, microphones and the like
IPC: H04R9/02
Filed: 1928-02-06
Abstract: 310,997. Stanley, A. Feb. 6, 1928. Loudspeakers; magnetic instruments; diaphragms.-A diaphragm unit for loud-speakers, microphones &c. comprises a rubber &c. disc A sandwiched between two discs or rings B, C, the disc C being formed with a bridge piece or web D to which is attached a conducting wire or strip E located between the poles of a permanent or electromagnet F. The outer edge of the disc A is secured to the housing or neck of a loud-speaker &c. Fig. 3 shows a modification in which two diaphragm units' are arranged back to back and adapted for use with the horns shown in Figs. 4 or 5. The wire E may be replaced by a loop of wire or a pancake coil, in which case, each side of the loop or coil may, if desired, be located in a magnetic field. The diaphragm unit may be used with the bulbous type of horn described in Specification 290,387, [Class 13, Bells &c.]. According to the Provisional Specification, the disc B may be dispensed with and the bridge piece D replaced by lugs adapted to hold the wire E.
Patent GB-922675-A (GB)
Title: Preparation of di-aliphatic phosphites
IPC: C07F9/142
Filed: 1960-02-02
Abstract: A di-aliphatic phosphite is obtained by reacting an aliphatic alcohol containing at least five carbon atoms and in which the aliphatic radical is an alkyl group or an alkyl group substituted by a nitro, chloro, or alkoxy group, with a tri-aromatic phosphite in the presence of phosphorous acid, or with a di-aromatic phosphite, in the proportion of at least the stoichiometric amount of the alcohol where a tri-aromatic phosphite is used or of at least two moles of the alcohol per mole of the di-aromatic phosphite when the latter is used, and recovering the resulting di-aliphatic phosphite.  The aromatic group present in the di- or triaromatic phosphite may be a phenyl or substituted phenyl group, e.g. p-chlorophenyl, p-nitrophenyl, or cresyl and the aliphatic alcohol is preferably one having 8 to 20 carbon atoms in the molecule.  The preferred reaction temperatures are from 60 DEG  to 150 DEG C. and it is preferred to carry out the reaction in an atmosphere of dry nitrogen.  Examples are given for the production of di(2-ethylhexyl)-, dilauryl-, and distearylphosphites.  The products have flame proofing properties as resin components and di(2-ethyl-hexyl) phosphite may be chlorinated, e.g. at 0 to 2 DEG C., to form di(2-ethylhexyl) phosphorochloridate which may then be hydrolysed to form di(2-ethylhexyl) phosphoric acid.  Specification 835,785 is referred to.