baber/WOPTO huggingface dataset:
Patent GB-488393-A (GB)
Title: Improvements in or relating to carrier wave modulating systems
IPC: H03C1/16
Filed: 1937-06-11
Abstract: 488,393. Valve modulating circuits. LORENZ AKT.-GES., C. June 11, 1937. No. 16268. Convention date, June 13, 1936. [Class 40 (v)] A self-excited carrier frequency generator is modulated by applying to its grid only the positive half-waves of the modulating-voltage, thereby preventing suppression of the oscillations by negative half-waves of large amplitude. The tube N2 has a resonant circuit R connected to the grid and produces oscillations by virtue of the back coupling means K. A microphone Mi and transformer T2 are included in the grid circuit for direct modulation on the oscillator. Normally, speech from A is amplified in tube N1 which is coupled to the grid of the oscillator by condenser C1 and blocking means M such as a dry rectifier, with the result that only half-waves which render the grid less negative are active in modulating the carrier. The modulated carrier is conveyed over the resistance coupling W to the tube N3 where it is amplified and passed to the line B by a transformer T3.
Patent GB-237231-A (GB)
Title: Improvements in method of and means for controlling reciprocating motors
IPC: H02P23/00
Filed: 1925-06-24
Abstract: 237,231. Central Electric Tool Co., (Assignees of Weyandt, C. S., and Fox, H. E.). July 17, 1924, [Convention date]. Percussive tools.-In systems for controlling reciprocating electric motors, applicable to electric hammers and other percussive tools for drilling, chipping, or riveting, rectified current is supplied in succession to the windings of the motor through a synchronous switch. The motor operates at a frequency lower than that of the supply and comprises two solenoids 11, 12, Fig. 1, a core 13 operating the tool, a back-stop 15 storing energy on the backward stroke of the core, a casing 16 with end-caps 17, 18, and a handle containing a trigger control-switch 20. Current from single-phase mains 29, 30, Fig. 2, is supplied to the windings 11, 12 through a thermionic valve 27, the filament of which is supplied from a transformer 28. The control switch 26 is driven at half the frequency of the supply by a synchronous motor 23 supplied through a handswitch 24 from the mains 29, 30 and having a rotor with four salient poles and a squirrel-cage winding. The switch 26 comprises a continuous conducting ring 33 of the form shown developed in Fig. 2 and contacting with brushes 37 - - 40 connected respectively to the valve 27, the winding 11, the winding 12, and a normally-closed, spring-restrained, electromagnetic switch 25 in the circuit of the motor 23. The rectified current impulses through the valve 27 are of 270‹ duration in a complete cycle of 360‹ of the supply and are separated by peroids of zero current, the switch 26 connecting the windings 11, 12 in circuit for 270‹ to 300‹ and changing the connections during the zero-current periods to prevent arcing. To ensure such changes, the switch 26, and so the polarity of the rotor poles 47- - 50 of the motor 23, must have a definite relation to the cycles of the supply. If this relation exists, extensions 35, 36 of the ring 33 contact with the brush 40 during periods of zero-current and no current is supplied to the switch 25; if not, the relation is produced on closure of a manual switch 52 by opening of the switch 25 for an odd number of cycles of the supply by current from the brush 40, the polarity of the poles 47 - - 50 being corrected and the switch 26 brought to the required relation with the supply.
Patent GB-641070-A (GB)
Title: Improvements in a method and apparatus for manufacturing an absorption control element for use in a sanitary napkin
IPC: A61F13/15
Filed: 1947-02-20
Abstract: 641,070. Endless-belt conveyers. BURGESS, A. F., [Representative of BURGESS, A. F.], (International Cellucotton Products, Co.). Feb. 20, 1947, No. 16330/49. Divided out of 640,987, [Group VI]. [Class 78 (i)] [Also in Groups VI and VIII] In a machine for producing a felted pad made from shredded fibrous material this is received from a mill 26 and falls on a conveyer belt 31 carrying a web of creped paper 35 to form a loosely felted layer. The belt passes over a hollow member 39 from which air is extracted by a fan 41 so that the consequent suction through the belt and web assists in compacting the felted layer. A second crepe paper web 45 is laid over the layer by a roller 46 and the whole is rewound on a roll 48.
Patent GB-1202666-A (GB)
Title: Improvements in fuel injection systems
IPC: F02D41/10
Filed: 1969-03-28
Abstract: 1,202,666. Regulating I. C. engines. ROBERT BOSCH G.m.b.H. March 28, 1969 [March 29, 1968], No.16368/69. Heading F1B. [Also in Division G1] In an I.C. engine fuel injection system in which a monostable multivibrator is triggered in dependence upon the engine speed and the duration of opening pulses from the multivibrator is dependent upon the pressure in the intake manifold 12, a pressure sensor 41 connected downstream of the butterfly valve 50 is connected momentarily to atmospheric pressure when the butterfly valve is opened to provide an increased injection period during acceleration. As shown, the pressure box 41 is connected to the manifold via a chamber 58 and to atmosphere via orifice 61 which is normally closed by a valve disc 62. Opening of the butterfly valve causes valve disc 62 to lift off its seat, the disc returning to its seat only when the pressure in the chamber 72 of pressure box 68 and chamber 58 are substantially equal.
Patent GB-699981-A (GB)
Title: Improvements in separators for storage battery plates
Inventor: WALKER HOWARD EMERSON
IPC: H01M50/437
Filed: 1951-07-10
Abstract: 699,981. Batteries. OWENS-CORNING FIBERGLAS CORPORATION. July 10, 1951, No. 16371/51. Class 53. A storage battery separator consists of a mat 26 of glass fibres impregnated with a porous substance and provided with ribs 28 to which is attached a glass fibre mat 32. The impregnating substance for the mat 26 may consist of microporous rubber or of particles of an inorganic substance bound together with elastomers, for example diatomaceous earth and a suspension of butadiene styrene copolymer or of neoprene latex. A mixture of silica and aluminium silicate may be used with ammonium alginate and rubber latex. In another example clay is mixed with gelatin and a suspension of polystyrene. The mixtures may also contain wetting agents. Fig. 6 shows part of an apparatus for making the separator. The glass fibre mat 26 is unwound from a roll and passed over a drum 38 and under a coater 40, the front wall 42 of which is provided with ribs 43 and is curved at its lower end and spaced from the periphery of the drum as shown at 44. The impregnating material for the mat 26 is fed into the coater 40 in a plastic condition and is pressed into the mat as this moves beneath the end 44 of the coater while at the same time the ribs 43 mould grooves and ribs in the top surface of the plastic material on the mat 26. The covering mat 32 is unwound from a roll and pressed against the ribbed surface 28 by a roller 50. The ribs being in a plastic state adhere to the mat 32. The completed web is then passed through an oven and then cut into pieces of the required size by a reciprocating knife.
Patent GB-166116-A (GB)
Title: Improvements in liquid-raising apparatus
IPC: F02M37/02
Filed: 1921-06-15
Abstract: 166,116. Gausmann, C. July 7, 1920, [Convention date]. Vacuum apparatus. -Apparatus for raising liquid, such as fuel for internal-combustion engines, comprises a chamber m connected by a pipe a to a source of suction, by a pipe d to a reservoir of the liquid to be raised, and by a valve c to the atmosphere. The float h controlling the suction and atmospheric valves b, c carries a cup f into which the pipe d delivers to load the float and retard the closing of the valve b and opening of the valve c. The liquid in the cup f is discharged through a siphon g, and when the chamber n is empty the float opens the valve b and closes the valve c. The siphon may be valve-controlled, or it may be dispensed with and the pipe d carried to the bottom of the cup. The valves b, c and pipe d are arranged in a common member mounted on the chamber. The chamber m discharges into a chamber n connected to the carburettor &c.
Patent GB-992497-A (GB)
Title: Improvements in or relating to packages for cards or carded articles
IPC: B65D83/00
Filed: 1962-05-01
Abstract: 992,497. Display-units. GILLETTE CO. May 1, 1962 [May 8, 1961], No. 16612/62. Heading A4T. [Also in Divisions B8 and G5] A display unit comprises an open top carton having side walls 22 with downwardly directed retaining flanges 23<SP>1</SP> for engagement with shoulders 13 in a set of rectangular display cards 10 the upper parts of which project from the top of the carton. Each card carries an article 12 such as a razor blade dispenser and has holes 11 for hanging it from a display rack 18. To transfer the cards to the rack 18 a wall 24 is folded down or torn off along perforations and the cards are transferred as a group (Fig. 6).
Patent GB-129382-A (GB)
Title: Improvements relating to Fuses for Shells or Projectiles.
Inventor: TUCKER JOHN BRISTOW
IPC: F42C19/02
Filed: 1917-11-13
Abstract: 129,382. Tucker, J. B. Nov. 13, 1917. Projectile fuses.-Consists, in making a fuse body by providing a hollow casing a of cast iron and casting into it a core b, of white-metal or the like. The core has projections, suitably balanced, for securing it to the outer part, and is machined to receive the usual fittings.
Patent GB-165655-A (GB)
Title: Improvements relating to electrostatic plant for depositing dust and particles from gases
IPC: B03C3/76
Filed: 1920-06-21
Abstract: 165,655. Skinningrove Iron Co., Ltd., and Smith, T. R. June 21, 1920. Gases, electrically precipitating stispended particles from. - A negative collecting elcetrode of a dnst-depositing plant consists of a flexible metallic structure attached to a fixed upper bar a and a heavy lower bar which is raised and let fall so as to jerk the electrode and remove deposits. In one form, the electrode c is composed of links so as to resemble chain mail. The lower end b is guided vertically and is lifted and dropped by cams e. Several electrodes may be shaken successively so as to equalize the load on the cam shaft. In another form, horizontal bars or laths are connected together and to the top and bottom by interlaced flexible vertical wires.
Patent GB-650407-A (GB)
Title: Improvements in apparatus for measuring the hardness of materials
IPC: G01N3/42
Filed: 1948-06-22
Abstract: 650,407. Testing hardness of plastic materials. WALLACE & CO., Ltd., H. W., and MORE, A. R. June 22, 1948, No. 16730. [Class 106 (ii)] Apparatus for measuring the hardness of a plastic material by measuring the difference in the penetration of a plunger indenting the material under two set loads successively using either the upper or lower surfaces in contact with the specimen as datum surface comprises a cast base 1 carrying a glass plate 3 to support a specimen, and a column 4 upon which slides the upper portion 7 of a carriage under the control of a rack 12 and pinion 11 manipulated by a hand wheel 10, the lower portion 18 of the carriage sliding on the upper portion under the control of rack 25 and pinion 24 manipulated by a hand wheel 26, keys 14, 19 preventing angular displacement and a set screw 21 limiting downward movement of the portion 18. An indentor 30 is fixed to a plunger 29 which is coupled preferably magnetically with gauge mechanism 37 for indicating its displacement and the weight of the plunger, which forms the minor load, is initially borne by a weight 28, which forms the additional load and is initially borne by an arm 27 of the lower portion 18 of the carriage. The gauge is carried by a neck 33 of a casing 31 having a bush 42, the bush 42 sliding loosely in a hole in the arm 27 and the neck 33 in a hole in an arm 8 of the upper portion 7 of the carriage, which arm 8 supports the weight of these parts initially. To make a test measuring the indentation from the upper surface of the specimen, a shoe 44 is attached to the bush 42 and surrounds the indentor 30, the specimen is placed on the plate 3 and the wheel 10 turned to lower the carriage, the shoe 44 makes contact with the specimen, the weight of the parts supported by the arm 8 is transferred to the specimen, as the weight 28 is lowered with the carriage, the plunger is left floating in the specimen under the minor load, the indicator needle settles and the dial is set to indicate 100 so that, when the carriage is lowered still further to transfer the weight 28 to a shoulder 43 on the plunger which then sinks into the specimen until it floats under the major load, the hardness of the specimen may be read from the gauge. To make a test measuring the indentation with reference to the supporting surface, the shoe 44 is removed and the position of the lower portion 18 of the carriage is adjusted so that it comes up against a stop 16 on a hand wheel 13 which is now turned downward. The wheel 10 is then turned to lower the carriage until the indentor 30 rests on the specimen and thereafter until the needle indicates 100. The wheel 26 is then turned to lower the lower portion 18 of the carriage until the needle comes to rest indicating the hardness. To overcome any frictional resistance the apparatus is preferably gently vibrated by means of an electric buzzer 55.
Patent GB-316380-A (GB)
Title: Improvements in or relating to gyroscopic indicating instruments
IPC: G01C19/44
Filed: 1928-06-09
Abstract: 316,380. Brown, S. G. June 9, 1928. Gyroscopic apparatus.-In a gyroscopic indicating instrument, particularly an artificial horizon, the gyroscope is mounted on a normally vertical shaft supported by a sleeve which is mounted at or near its mid-point in a gimbal suspension. The gyro wheel 2 carrying the mirror 1 is mounted on the upper end of a vertical shaft 3, being preferably attached to the shaft by a universal joint, and also supported by a ball bearing and free-wheel clutch as described in Specification 274,980. The: shaft 3 is supported in a sleeve 4 carrying at its lower end the driving motor 6 and mounted at about its mid-point by means of a gimbal suspension 7 in a turntable 8. The table 8 is mounted by a ball bearing 9 in a pendulous frame 10 carrying a motor 11 by which the turntable is slowly rotated, preferably in the same direction as the. gyro-wheel 2. The frame 8 is mounted in an outer gimbal frame, not shown, which is preferably so arranged that the plane of its pivots contains the cardan point of the universal joint carrying the gyro-wheel. The system carried by the suspension 7 may be rendered pendulous by a weight 16 and is preferably provided with damping-means comprising a ring 17 submerged in oil &c. in a bath 18. A brush 15 on the turntable 8 co-operates with a slip ring 14 on the frame 10 to supply current to the motor 6.
Patent GB-905241-A (GB)
Title: Improvements in or relating to the detinning of scrap tinplate
IPC: C22B25/06
Filed: 1960-05-12
Abstract: 905,241. De-tinning scrap metal. KNIPPERS, G. May 12, 1960 [May 23, 1959], No. 16835/60. Class 41. Scrap tin-plate is de-tinned electrolytically using an electrolyte, preferably an alkaline carbonate, to which is added an organic liquidmiscible with it, e.g. a low molecular alcohol. The electrolyte contains 35 to 45 g. per litre of alkali calculated as Na 2 O, and may be added as carbonate, and 5 to 20% by volume of MeOH. Operating temperatures of 60‹ to 80‹ C., using 2.8 to 3 v. at 2500 amps. A suitable apparatus consists of a steel vessel 17 heated at the base 9, and in which is mounted an open drum cathode 4 and an inner wire basket 3 connected through bars 10 to the anode leads 5. The contacts 2 are of copper amalgam. The bales of compressed scrap are preferably treated with electrolyte in vacuo, and loaded into the basket 3 without dis-membering. Tin is deposited on the cathode as a powder, and any oxygen formed at the anode is directed upwards away from the cathode deposit by funnel-shaped louvres mounted outside the inner basket member. The tin deposit is scraped and remelted in a reducing atmosphere with or without addition of ammonium chloride and borax.
Patent GB-794016-A (GB)
Title: A wide-angle objective
IPC: G02B13/04
Filed: 1955-06-10
Abstract: 794,016. Optical objectives. BERTELE L. J. June 10, 1955 [June 18, 1954], No. 16838/55. Class 97(1) A wide-angle objective consists of three components separated by air spaces, the first component, that facing the object, being divergent meniscus convex towards the object, the second component being a convergent meniscus convex towards the object and the third component being convergent and having its more strongly curved surface convex and facing the image, the air space between the second and third components containing the diaphragm and having the form of a converging lens. Numerical data are given for two examples of the objective shown.
Patent GB-203430-A (GB)
Title: Improvements in drill chucks
IPC: B23B31/12
Filed: 1922-06-19
Abstract: 203,430. Muller, A. R., (Sorgel, P.). June 19, 1922. Chucks. - In a bevel closing chuck of the type. in which the jaws are disposed in radial guides in a carrier and have bevelled faces coacting with an outer rotatable sleeve, the carrier being formed separate from and rotatably mounted in a screw - threaded base portion which is secured to a machine spindle, the sleeve is provided with a screw thread for direct engagement with the base. The base a is provided with a socket c, in which is rotatably mounted the jaw carrier d, and with a screw thread j for engaging a sleeve i having a coned end k coacting with the jaws f, the latter being opened by a spring l. A ball bearing e is provided between the carrier and the base, and the parts of the chuck are held together by wire springs r, n engaging annular grooves in the base, sleeve or carrier. The carrier is made hollow for use with hollow epindle lathes, and a shoulder u on the body forms a guide for the sleeve.
Patent GB-138809-A (GB)
Title: Improvements in disinfectant supply devices for flushing cisterns
IPC: E03D9/03
Filed: 1919-07-07
Abstract: 138,809. Hemsley, A. July 7, 1919. Water-waste preventers, disinfecting- apparatus for.-The neck B of a disinfectant container A is formed with a groove C and fitted with a stopper D, by adjusting which the amount of disinfectant discharged may be regulated. Reference has been directed by the Comptroller to Specification 10110/07.
Patent GB-243269-A (GB)
Title: Improvements in the distributing mechanism of typographical machines
IPC: B41B11/18
Filed: 1925-07-01
Abstract: 243,269. Hart, H., (Mergenthaler Linotype Co.). July 1, 1925. Distributing matrices. - Distributing-apparatus for matrices, which have been separated into founts by a primary distributor, is so constructed as to avoid the necessity for notches in the feet of the matrices. The matrices from the primary distributor fall into one A, Fig. 1, of a number of distributor-boxes, in which they are sup. ported by means of their ears on inclined rails A<1>, A<2>. Shoulders A', A<5> arrest the matrices, which are lifted one by one by a reciprocating linger C, and slide down into engagement with the distributor-screws B<1>. The shoulders A<4>, A<5> are in different vertical planes, so as to arrest the matrices in an inclined position, and fingers A<7> tilt each matrix into a vertical position before it engages the screws. A separator blade D<5> engages slots in the matrices to prevent more than one from being lifted. In a modification, the shoulders A<4>, A<5>, Fig. 5, are in a vertical plane, and the lifted matrix is pushed forwards by a pivoted spring-pressed dog D, having a cross-bar D<2> in the path of the matrices. Shoulders E<1>, E<2> limit the movement of the matrices under the action of the dog, the lower part D<3> of which also acts as a separatorblade. Fixed cam surfaces may be used in place of the dog. In another form, the upper shoulders A<4> are formed on a sliding member, which is retracted by a cam to withdraw the shoulders from beneath the matrix ears. The ends of the screws B<1> are cut away to form vertical abutments for the matrices, and the guide-rails may have co-operating abutments to prevent rebound.
Patent GB-607029-A (GB)
Title: Improvements in or relating to means for tuning wireless sets
IPC: H03J3/10
Filed: 1946-06-04
Abstract: 607,029. Tuning radio receivers. PHILIPS LAMPS, Ltd. June 4, 1946, No. 16942. Convention date, Oct. 16, 1939. [Class 40 (v)] In a wireless set having band spread-tuning on one or more bands, use is made of a variable auxiliary coil connected in series or in parallel with the main tuning coil, either continuously or only for band-spread tuning, the inductance of the auxiliary coil being varied during normal tuning simultaneously with the capacity of the main tuning condenser, while during band-spread tuning the main tuning condenser is cut out of circuit and is replaced by a fixed condenser defining the centre of a band in which band-spread tuning is effected by variation of the auxiliary coil. In Fig. 1, normal tuning is effected by a main tuning coil 1, together with a main tuning condenser 2 simultaneously variable with an auxiliary coil 3. For band-spread tuning switch 4 is moved to one of positions 6 ... 8 to connect an appropriate condenser 9 ... 11 in circuit tuning being effected by adjustment of the auxiliary coil 3. Coil 3 and condenser 2 are operated-by a single tuning knob. The auxiliary coil may be in series with the main coil, Fig. 2 (not shown). In Fig. 3, the auxiliary coil 13 is only connected in circuit when switch 4 is moved to one of the band-spread positions 6 ... 8. A similar arrangement for a parallel connected auxiliary coil is described in which two ganged switches are used for changing the connections, Fig. 4 (not shown). The variable inductance may be adjustable by moving a short-circuited turn, a metal plate or a high-frequency magnetic core by means of a spiral cam driven by a rotary shaft having the same angular movement as the shaft driving the main tuning condenser.