baber/WOPTO huggingface dataset:
Patent GB-754594-A (GB)
Title: Improvements in lifting mechanisms for agricultural tractors
IPC: A01B63/06
Filed: 1954-06-11
Abstract: 754,594. Tractor power-lift mechanisms. PATISSIER, A. June 11, 1954 [June 19, 1953; Jan. 21, 1954], No. 17257/54. Class 79 (1). In a tractor power-lift mechanism having a lift arm 8 oscillated by a nut 15 engaged with a screw 16a adapted to be rotated by the tractor power take-off shaft 11, the stroke of the nut 15 is limited by a pair of declutching abutments within a casing 10 of the mechanism and the stroke of the lift arm 8 is rendered shorter than that of the nut 15 by a pair of adjustable abutments 31 disposed outside the casing 10. As shown, the front end of the bar 3 of a plough 4 is articulated to links 2, 6, the links 2 being attached to a transverse shaft 1 on the tractor and the link 6 is connected to the lift arm 8 on a rotatable shaft 9 carried by the casing 10. Spring means 50 form an elastic link between the mechanism and the plough. The shaft 9 carries forks 12 engaging through blocks 13 pins 14 on the nut 15 carried by the screw 16a mounted in bearings 17 in the casing 10. The screw 16 has a splined section 16b slidably carrying a gear 18 which can mesh with either of gears 34, 35 or as shown in Fig. 3, disengaged from both gears, the gear 34 being carried by the tractor power take-off shaft 11 and the gear 35 being rotated in the opposite direction from the shaft 11. Movement of the gear 18 is controlled by a hand lever 25 so that the arm 8 can be raised or lowered, the screw 16a having such a pitch as to render the screw and nut irreversible. At the end of its .stroke the nut 15 either directly engages the gear 18 to disengage the drive from the power take-off shaft 11 or at the other end of the stroke engages an abutment 38 on a rod guided in the casing 10 and connected to the hand lever 25 to disengage the drive. Loosely mounted on the shaft 9 is an arm 26 connected by a link 27 to the lever 25 and carrying a pivoted lever 30. The lever 30 is spring-urged into the path of the abutments 31 adjustably carried in a slot 8b in the lift arm 8, whereby the stroke of the arm 8 can be adjusted within the limits set by the abutment 38 and engagement between the members 15, 18. If desired the driver can temporarily move the lever 30 out of the path of the abutments 31. Free-wheel means or an overload clutch, Fig. 7 (not shown), may be interposed in the drive from the power tuke-off shaft. In other embodiments, Figs. 8 to 12 (not shown), the gear-wheel adapted to be driven from the power take-off shaft is arranged at each end of the nut, and the nut may be replaced by a sector carried by the lift arm shaft, Fig. 6 (not shown).
Patent GB-1501729-A (GB)
Title: Conversion of organic waste material
IPC: C10B53/00
Filed: 1975-04-25
Abstract: 1501729 Gasifying waste material REDKERYOUNG PROCESSES Inc 25 April 1975 [6 May 1974] 17303/75 Heading C5E [Also in Division F4] The destructive distillation of waste organic material, for example fragments of paper, wood, garbage and plastics or trash from which glass and metal have been removed through flotation, is carried out by passing the organic material in dried and pulverized form through an extruder provided with two (or more) separate heating stages A, B and associated ports 66, 78 for the extraction of gases and vapours, and a cooling stage C. The root 40 of the extruder screw may increase in diameter from one end of the screw to the other, continuously (as shown) or stepwise. In operation the material is heated by electrical heating bands 96 and to some extent by the compaction also, to 400-600‹ F. in the first stage and the gases and vapours escaping including methane, ethane, carbon monoxide and carbon dioxide, are drawn off through a ceramic filter 76 into conduit 68 by vacuum pump 74. The conduit may be inductively heated to a red heat whereby to convert the paraffinic constituents into olefines. The gases and vapours pass through a condenser 70 to a storage tank 72. In the second stage the material is further heated, e.g. by induction heating up to 1500‹ F. and the volatiles extracted through the conduit 80 may be condensed into acetic acid, methyl alcohol and acetone. Alternatively, if the conduit is heated to a red heat, the volatiles will be reduced to gaseous paraffins and olefins. In the final stage the charred remnant is cooled by water circulating in jacket 89 to a temperature of 200‹ F. or less, to safeguard against its spontaneous ignition upon being exposed to the air. The extruded material may be formed into pellets and used as fuel.
Patent GB-984968-A (GB)
Title: Photographic printing
Inventor: NEALE DENIS MANKTELOW
IPC: G03B27/72
Filed: 1962-05-04
Abstract: 984,968. Supply systems for space discharge apparatus; control of A.C. motors. ILFORD Ltd. April 10, 1963 [May 4, 1962], No. 17307/62. Headings H2H and H2J. Photographic printing apparatus comprising both an electric discharge lamp and a tungsten filament lamp is provided with means for dimming the lamps so as to permit satisfactory printing of photographic negatives of differing density levels. The mean current flowing through the tungsten lamp is varied by means of a variable reactance X which may be of any suitable type such as a saturable reactor or a pair of reversely connected half-wave triggered rectifiers such as thyratrons or silicon controlled rectifiers whilst the light from the discharge lamp is intercepted at twice the frequency of the alternating current supply by a sectored shutter driven by a motor M connected in a bridge circuit comprising the variable reactance X, the tungsten lamp and a tapped impedance connected across the supply. Thus variation of the value of the reactance X simultaneously varies the current through the tungsten lamp and the phase, relative to that of the alternating current supply, of the voltage applied to the motor M with the result that the light intensity falling on the photographic negative from the discharge and tungsten lamps is varied. In a further embodiment the motor M is supplied from a bridge circuit together with a transformer and harmonic filter elements.
Patent GB-317941-A (GB)
Title: Position indicators for motor vehicles
IPC: B62D15/02
Filed: 1928-06-15
Abstract: 317,941. Kenna, M. D. June 15, 1928. Steering, indicating-devices for.-A position indicator or driving and parking guide comprises a plurality of spaced sights fixed on the car and adapted when aligned by the eye of the driver to indicate the path of the vehicle wheels. In the construction shown the foresight 13 comprises the tip of a radiator cap fitting 10 and the backsight 15 is adjustably carried on the dash-board 22. The line of sight 25 cuts the ground at a. point 23 which indicates the line which the offside wheels will just clear if the vehicle is steered in a straight path. According to the Provisional Specification more than two sights may be used.
Patent GB-356249-A (GB)
Title: Improvements in or relating to reversible dobbies for looms for weaving
IPC: D03C1/36
Filed: 1930-06-05
Abstract: 356,249. Loom dobbies. WOOD, A. E., Dobcross Loom Works, Dobcross, Yorkshire.-(Crompton & Knowles Loom Works; Worcester, Massachusetts, U.S.A.) June 5, 1930, No. 17357. [Class 142 (i).] A reversible dobby of the Knowles head type is arranged to control both the harnesses and the boxes of a drop-box loom in such a manner that the harness movement starts earlier than the box movement in every instance regardless of the direction of operation, by the provision of a lostmotion connection which is automatically shifted to correct the timing when the direction of rotation of the dobby cylinder is reversed. The cylinder gears 31, 41, Fig. 2, for the harnesses are fixed to the cylinder shafts 11, 12 and rotate in unison therewith, but the gears 30, 40 which control the boxes are loosely mounted on those shafts and are provided with segmental slots 60, Figs. 5 and 7, through which extend studs 61 mounted in collars 62 fixed to the shafts 11, 12. Spring washers 63 hold the centre web portions of the gears 30, 40 frictionally against the disc 62 whilst permitting the gears to slip relative to the discs the length of the slots when the direction of rotation of the cylinder shafts is reversed. The vibrator levers for the boxes and harnesses are controlled by pattern chain mechanism 25, and are locked by separate lock knives operated by cam means against the action of springs.
Patent GB-327061-A (GB)
Title: Electrical overhead insulator
IPC: H01B17/20
Filed: 1929-06-06
Abstract: 327,061. Fry, G. H., and Fry, G. E. June 6, 1929. Insulators. - In an electric insulator for supporting telephone and like wires the wires are clamped between two insulating washers which are held in position by upper end lower members of the insulator. In the embodiment shown, the lower insulating washer b<1>, Figs. 1 and 3, is formed with transverse recesses e which accommodate the wires and correspondingly shaped projections on the upper washer b<2>. In order to prevent relative motion between the washers, spigots f on the lower washer engage bucets in the upper, the spigots being of different dimensions. The lower member d of the insulator is adapted to screw on a standard and is formed with a threaded boss c and two cavities h, Fig. 4, in its upper surface which accommodate lugs g on the lower insulating washer and allow the recesses e to take up the direction of the, wires. The upper member or cap a is internally threaded to receive the boss c on the lower member and is formed with lugs k to facilitate tightening.
Patent GB-173633-A (GB)
Abstract: 173,633. Automatic Telephone Manufacturing Co., Ltd., Webster, P., and Mercer, R. Oct. 18, 1920. Automatic and semi-automatic systems and apparatus.-For preventing two switches of a group from connecting to the same line simultaneously, a controlling-circuit extending through contacts individual to each of the other switches of the group is provided, which prevents more than one connection from being completed at the same moment. In Fig. 1, the invention is shown applied to a group of rotary line switches C, C<1>, C<2>, C<3>, having access to selectors such as D, and divided into sub-groups, the switches C, C<1>, C<2>, C<3>, representing switches in four such sub-groups. A chain circuit 20, 21, 22, 23 extends from the conductor 38 over the armatures 18, 18<1> &c. of the line relays of idle switches, or the armatures 35<1>, &c. of the switching relays of those switches which have extended connection, to the lead 24 and back to the conductor 38, so that this circuit is interrupted only during the interval between the energization of a calling subscriber's line relay and the energization of his switching relay 24<a>. Points in this chain, one in each sub-group, are earthed in rapid succession by the arms 33 of a rotary contact maker S common to the group of line switches. On a switch, say C, being taken into use its line relay 13 is energized, and if no other switch in the group is actually engaged in searching for an idle line, a circuit is completed for the rotary magnet 26 and the switching relay 24<a> over the armature 18 and the chain circuit 20, 21, &c. to earth at, say, contact 34 and arm 33, a point between the switching relay and the rotary magnet being connected to the test wiper 28. As long as busy lines are engaged by the wipers the rotary magnet 26 is energized to step the wipers round in the usual manner, but on an idle line being found a short circuit is removed from the switching relay 24a, which responds and locks up and extends the caling line to a selector D. If a line switch in a lower sub-group, for instance the switch C<1>, is engaged in searching for an idle line, the chain circuit is interrupted at the armatures 18<1> and 35<1> and the response of the switching relay 24a of the switch C is delayed until an arm 33 engages the contact 37. This delay is very small as the arms 33 of the device S only rest on the contacts 34 &c. long enough to allow a relay to operate. In a modification two chain circuits are provided and earth alternately connected to them. The device S may also be replaced by a chain of relays adapted to energize and de-energize one another in continuous cyclical succession, their armatures successively earthing the conductors leading from the contacts 34 &c. According to the Provisional Specification the cyclical succession of relays is only set in operation when earth is actually required.
Patent GB-575930-A (GB)
Title: Improved elastic pad as employed on moulding presses to form, in effect, a female die surface into which pattern pieces may be pressed during the moulding process
IPC: B30B15/02
Filed: 1943-10-22
Abstract: 575,930. Embossing by cupping. HYDRAULIC ENGINEERING CO., Ltd., and MANGNALL, A. R. Oct. 22, 1943, No. 17437. [Class 100 (ii)] [Also in Group V] Relates to box constructions of the kind employed to house elastic pads used in moulding presses to form, in effect, a female die surface into which pattern pieces may be pressed during the moulding process. According to the invention the ends 2 (Fig. 1, plan view Fig. 3 end view) of the box are connected to plates 1 disposed at right-angles to the ends, the two sets of plates being tied together by rods 4. The sides 5 of the box are reinforced by #-shaped plates 11, the sides 9 of which bear against the box sides 5. In modifications (a) the sides 5 serve as the tie rods, and (b) (Fig. 11) the sides 5 are formed from spaced strips 13 lined with pieces 16. Specification 560,229, [Group XXIV], is referred to.
Patent GB-691237-A (GB)
Title: Improvements in or relating to voice frequency signalling systems
IPC: H04Q1/453
Filed: 1951-07-23
Abstract: 691,237. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. July 23, 1951 [July 21, 1950], No. 17438/51. Class 40 (iv). A subscriber transmits the called number to a register by pressing push-buttons to emit corresponding frequencies which pass through appropriate filters F1-F10 in the register to fire one or more gas tubes, the higher frequencies being substantially harmonics of the lower frequencies and the low-frequency filters F5-F10 being associated with two tubes, one of which is also associated with the filter passing a harmonic of said low frequency. A subscriber initiates a call by depressing button K, Fig. 1, which is locked down by a spring 17 and reverses contacts 15, 16 to close the line circuit through the filament of tube E1. A line relay starts a line-finder Sa-Sc, test relay SR3 pulling up when the calling line is encountered. A register-finder Va-Vc selects a free register, whereafter SR1 pulls up to close circuit over the loop, the filament of E1, wipers Va, Vb, relay R7 and tube E21. Tubes E21 and G2 feed tube E1 with a constant current irrespective of the resistance in the line. Tube E1 is thus energized and emits an audio-frequency signal over transformer T12, the signal being shaped by trigger E23 and passed over transformer T2 and through filter F11, Fig. 3, to actuate relay R6 which pulls up before the slugged relay R7. The first digit is transmitted by depression of one of push-buttons P1-P10 which changes the frequency of tube E1, one of filters F1-F10 responding to fire one or more of gas-tubes G31-G34 and actuate the corresponding relays R11-R14 which lock up. Simultaneously, release of R6 energizes both opposed windings of R5 and the upper winding of R4. When the signal ceases, filter F11 re-operates R6 to release the upper winding of R5 which then pulls up under the influence of its lower winding to actuate R1, which locks up so that the second digit fires one or more of tubes G35-G38 and the associated relays R15-R18. Similarly, operation of R2 causes the third digit to be registered on tubes G39-G42 and relays R19- R22 after which R3 pulls up to extinguish the fired tubes and indicate over lead t5 to the register that three digits have been entered. The register then functions in known manner and is released by earth on lead t6 operating SR2, which restores SR1, dismisses the register and establishes connection between leads a, b and a1, b1.
Patent GB-1268266-A (GB)
Title: Process for the production of malonic acid dinitrile
IPC: C07C253/06
Filed: 1969-04-03
Abstract: 1,268,266. Malononitrile. DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT. 3 April, 1969 [5 April, 1968; 5 March, 1969], No. 17456/69. Heading C2C. Malononitrile is prepared in the absence of a catalyst by reacting a thorough mixture of gaseous acetonitrile and a gaseous cyanogen halide in a molar ratio greater than 1, and subsequently condensing the reaction mixture by chilling it with a coolant. The acetonitrile may contain up to 50% by weight of water, and when water is present, the reaction mixture is neutralized during condensation by the addition of an acid-binding agent. The coolant is preferably condensed malononitrile, water or anhydrous or aqueous acetonitrile. The reaction may be carried out in the presence of a gas inert to the reactants, e.g. nitrogen, carbon dioxide or, preferably, steam. In a preferred embodiment, the reaction mixture is condensed directly inside the reactor outlet.
Patent GB-146224-A (GB)
Title: Improved process for manufacturing detergents
IPC: C11D3/34
Filed: 1920-06-26
Abstract: The alkali, ammonia, or other soluble salts of a  or b naphthalene-mono-sulphonic acid are used as lathering detergents. The sulpho-salts may be mixed with soda, potash, water glass, clay, kieselguhr, glauber salts, or other filler.
Patent GB-255631-A (GB)
Title: Improvements in electrical water heaters
IPC: F24H1/20
Filed: 1925-07-08
Abstract: 255,631. Croad, A. K., (Naamlooze Vennootschap Fabriek van Instrulmenten en Electrische Apparaten Inventum). July 8, 1925. Heating by electricity. -A pressure-fed water heater in which an electric heating element 12 is located within the water container is provided with means in direct communication with the inlet pipe 7 for automatically preventing dripping or leakage from the outlet pipe 9 when the inlet is closed. This means comprises a water - levelling chamber 10 connected to an injector 8 on the inlet pipe. Water flows from the container into the chamber 10 when the inlet is closed and is ejected therefrom when the inlet is re-opened. A non-return valve may be fitted in the inlet pipe. A thermostat 13 may also be provided. The container comprises intercommunicating concentric cylinders 1, 2, 3 surrounded by a lagging of cork 15. In a modification the container is a single cylinder closed at the bottom by a removable plate on which the devices located in the container are mounted. Baffle plates are provided to increase the efficiency.
Patent GB-1060286-A (GB)
Title: Knitting machine
Inventor: MICHALKO JAN
IPC: D04B35/22
Filed: 1965-04-27
Abstract: False twist is imposed on a yarn by a texturing device prior to it being fed to a knitting-machine.  A heat setting device is provided positioned prior to the texturing device such that a yarn fed from a bobbin has the false twist imposed by the texturing device set by the heat setting device.
Patent GB-781394-A (GB)
Title: Improvements in or relating to apparatus for representing an input voltage in the form of a code
IPC: H04Q1/39
Filed: 1955-06-17
Abstract: 781,394. Electric selective signalling systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. June 17, 1955 [June 18, 1954], No. 17633/55. Class 40 (1). In an apparatus for representing a voltage in the form of a code, the voltage to be coded is compared with a reference voltage which increases in steps of equal amplitude, the reference voltage being derived from a series of pulses which are also fed to an electronic stepping device to control its stepping action, the reference voltage being arranged to block the source of pulses when it exceeds the value of the voltage to be coded whereby the electronic stepping device operates a device indicating the desired code value. As shown, the voltage to be coded is fed to the grid of valve 3 of a differential amplifier 2, 3, causing triode 3 to carry most of the current, the grid of valve 2 being earthed at that instant through contact 26. The series of pulses are derived from an oscillator valve 1, provided with back coupling through windings 13, 14 of a transformer whose output is applied via capacitor 16 and rectifier 17 to a capacitor 25 to produce a staircase voltage on the grid of valve 2. The pulses are also fed via transformer windings 13, 50 to the plates 44 to 49 of a trochotron 4 where in known manner the electron beam is stopped sequentially from box 59 to box 54. When the staircase voltage exceeds the amplitude of the voltage to be coded the valve 2 carries more current than the valve 1 causing the voltage on anode 23 to decrease, the diode 18 to conduct, and the series of pulses to stop. The stepping of the trochotron 4 ceases and the electron beam thus remains in a box corresponding to the amplitude of the voltage to be coded and through a winding 74 to 78 allows a testing device to be operated to give a signal in the form of a predetermined code combination corresponding to that box. The time constant of circuits 64 to 68 is long to prevent the operation of the testing devices by the stepping pulses. After the voltage has been transformed into code the apparatus is returned to zero by the closing of contacts 170 and 26, which are camoperated by a motor 8, a coding being obtained for each revolution of the motor. In an alternative arrangement, Fig. 2 (not shown), the stepping of the trochotron is controlled by a push-pull amplifier.
Patent GB-243278-A (GB)
Title: Improvements in and relating to variable resistors
IPC: H01C10/32
Filed: 1925-07-09
Abstract: 243,278. Croad, A. K., (Amsco Products, Inc.). July 9, 1925. Variable resistances.-A resistance for use in wireless circuits of the type comprising a stator member 13 including a resistance 12 and a rotor member including a shaft 21 carrying a contact blade 22, is fitted with a connector element 16 fixed to the stator and a spring 27 located between and bearing axially in opposite directions on the shaft and the connector element, the spring and contact blade acting in opposition so that each assists the other in maintaining electrical cor.tact between a rotor part and a stator part. The connector element is secured to the stator 13 and panel P by nuts 17, 18 and is connected to one binding post 14 by a strip 19. The blade 22 fits in an annular lip in a nut 23 mounted on the shaft 21, the nut and blade being locked in position by a nut 24 and washers 25, 26. An operating knob 28 is secured to the shaft by a screw 29.
Patent GB-120724-A (GB)
Title: Process of Dry Distillation with Strong Bases in the Presence of Steam of the Waste Liquors of the Cellulose Manufacture or other similar Waste Liquors.
Inventor: RINMAN ERIK LUDVIG
IPC: D21C11/00
Filed: 1918-10-30
Abstract: 120,724. Rinman, E. L. Nov. 8, 1917, [Convention date]. Ammonia; alkali manufacture.-Various products (ammonia, methyl alcohol, acetone, oils, wax, &c.) are obtained by dry distillation with strong bases in the presence of steam of waste lyes from cellulose manufacture and the like. The process is particularly applicable to waste lyes from soda-cellulose manufacture, waste lyes obtained by dissolving vegetable substances in boiling caustic soda solution, liquors obtained by boiling waste sulphite-cellulose lyes with calcium hydrate, and waste liquors obtained in the treatment of vegetable textile fibres with alkalis. The distillation is carried out in three stages, first below 200 C. until the water has distilled off, then from 200-300 C. until methyl alcohol has distilled off, and finally at 300-500 C. to distil off acetone; the ammonia distils off in the second stage. The heating is preferably effected by the introduction of superheated steam, or superheated steam mixed with the distillation gases. The Specification as open to inspection under Sect. 91 (3) (a) is not confined to the above temperature conditions, and refers to the distillation in stages of mixtures of organic acids with strong bases. This subject-matter does not appear in the Specification as accepted.