baber/WOPTO huggingface dataset:
Patent GB-651306-A (GB)
Title: Improvements in or relating to an electrical transmitter for a liquid level
IPC: G01F23/70
Filed: 1948-05-26
Abstract: 651,306. Variable contact wire-wound resistances; casings for resistances. THE LIQUIDOMETER CORPORATION. May 26,1948, No. 14212. Convention date, July 24, 1947. [Class 37] [Also in Group XXXVIII] In a device for electrically indicating the level of a liquid, a float carrying a magnet moves adjacently to a closed immersed tube containing a vertical resistor so as to selectively displace a plurality of magnetic contact elements disposed along the resistor to make contact therewith at a point corresponding to the liquid level, which is remotely indicated by a conventional instrument in circuit with the tapped resistor. Figs. 1, 2, 6 show a wirewound resistor 20 in a vertical closed rectangular tube 42 which has one thin wall 44, and is enclosed within an upright housing 66 connected with the surrounding liquid by restricted flow apertures 68, 70 having small adjacent magnets to trap magnetic impurities in the liquid. The resistor is surrounded by closely-spaced interconnected resilient contact elements 22 of silver-plated stainless steel, which may be stamped out of sheet as a grid and wrapped round the resistor in the desired form and clamped (Fig. 6) under the insulating block 52 supporting the resistor. The tube may be filled with a " Silicone " fluid compound and the resistor connections are brought out to top terminals 64. A float 40, rising and falling with the liquid level within the housing, carries a permanent magnet 48 oppositely to the thin wall of the tube which it surrounds, and is guided by rollers 46, so that the contact elements opposite the magnet poles are deflected to tap the resistor (Fig. 6). The liquid level is remotely indicated by a conventional resultant field instrument (Fig. 1) whose rotor 36 is deflected by stator coils 34 connected between the tap and the ends of the resistor, across which the 'battery 38 is connected. The float magnet may be electrically excited. In modifications, the float may rise and fall within a tube, and have two magnets selectively operating contacts engaging two resistors fixed within closed housings on the outside of the tube (Fig. 7, not shown), or the resistor may be contained in a rectangular tube surrounded by plural resilient wire linkages carrying both the contact elements and the magnetic elements deflectable by the float magnet (Figs. 8-12, not shown.).
Patent GB-378504-A (GB)
Title: Improved method of and mechanism for twisting and forming the ends of tube-shaped wrappers
IPC: B65B11/34
Filed: 1931-05-14
Abstract: 378,504. Wrapping-machines. ROSE, A. G. and ROSE BROS. (GAINSBOROUGH), Ltd., Albion Works, Gainsborough, Lincolnshire. May 14, 1931, No. 14236. [Class 94 (i).] In a wrapping machine of the kind in which the projecting ends of a wrapper disposed in tubular form about the article are twisted to close the packet, for instance as described in Specification 150,076, [Class 94 (i), Packing &c.], a mandrel is inserted at each end of the tube during twisting so that the finished packet has open tubular ends as shown in Fig. 5. The article 12, Fig. 1, arrives at the closing position between the jaws 10, 11 of a mould wheel and with the wrapper 13 about it in the form of an open-ended tube. The twisting mechanism comprises jaws 24, 25 pivoted at 20, 21 on a rotatable spindle 15 extending inwardly in the form of a mandrel 17. The jaws conform to the shape of the mandrel as shown in Fig. 4. The mechanism is operated so that the spindle 15 moves axially inwards without any relative movement of the jaws until the mandrel is located within the tubular extensions of the wrapper. A roller 29 now allows the jaws to close under the action of a spring 26 and the jaws and mandrel are rotated to twist the ends of the wrapper. During the twisting operation the jaws approach further towards the article to compensate for the loss of effective length of the wrapper. The shape of the mandrel may be varied, the jaws in each case conforming thereto.
Patent GB-600324-A (GB)
Title: Thermionic high frequency generating system
IPC: H05B6/50
Filed: 1945-06-07
Abstract: 600,324. Automatic control systems for high-frequency systems. RADIO CORPORATION OF AMERICA. June 7, 1945, No. 14407. Convention date, July 12, 1944. [Class 38 (iv)] [Also in Group XL (c)] Current; power.-A high-frequency oscillator supplies power to a load through a coupling circuit which is adjusted automatically, by means responsive to changes in space current through the valve, to compensate for changes in load characteristics and maintain a constant power output. Fig. 1 shows a load LD coupled by a rotary coil L3 to the tank circuit of an oscillator comprising parallel connected valves V1, V2, for the purpose of heating the load by high frequency currents. Coil L3 tunes the load to present a capacitive impedance and inductance L4 gives parallel resonance to a relieve coil L3 of some of the current drawn by the load. To compensate for changes in the characteristics of the load during the heating process the reactance of coil L3 is varied by induction motor M2 under the control of a discriminator circuit comprising the grid-controlled thyratrons V9, V10. The total grid current of the oscillator is maintained substantially constant by lamps A5, A6 to produce a negative bias for valve V9 across resistor R6 which is set to determine the power dissipation required in load LD. Anode current flowing via an H.T. source between terminals c, d provides negative bias for valve V10 across resistor R5 which is originally set to equal the bias on valve V9 so that both thyratrons are non-conducting. Any large increase in anode current owing to changes in load characteristics reacts through resistor R8 to depress the cathode voltage and ignite valve V9, operating relay E6 and completing the A.C. supply to motor M2 which varies the rotary coil L3 to restore the equilibrium value of the anode current. Similarly, if resistor R6 is increased to change the power dissipation, valve V10 ignites to operate relay E7 and drive motor M2 in the reverse direction. If the grid current falls below the safety limit under-current relay E4 breaks the supply voltage to the H.T. rectifier source in Fig. ]a (not shown), which also illustrates other overload arrangements and a timing device to switch off the apparatus after a predetermined heating period. Manual switch S11 allows the motor M2 to be run back to restore the original circuit conditions. A test meter 20 monitors total anode current and buttons S1, S2, S3 may be operated for monitoring filament current of valves V1, V2 and total grid current respectively.
Patent GB-1445052-A (GB)
Title: Support mounting for a remotely controlled device
IPC: B60R1/068
Filed: 1974-04-01
Abstract: 1445052 Rear view mirrors HARMAN INTERNATIONAL INDUSTRIES Inc 1 April 1974 [3 Oct 1973] 14445/74 Heading B7J [Also in Division E2] A remotely controlled rear view mirror comprises a mirror glass 15 in a backing 19, a pedestal support 21 secured in a housing 22 mountable on a vehicle panel 23, a control knob 16 mountable on the vehicle dash 13 and connected by cables 17 to the backing 19, wherein the latter is connected to the pedestal 21 for rotation about two axes at right angles to each other by means of a cross member 20 formed of two intersecting cylinders 34, 35 secured together at right angles at their cross point of contact with each other, the cylinder 34 bearing in an elongate trough 33 in the backing 19 and the cylinder 35 bearing in troughs 36 on the pedestal 21, the opposed troughs being urged against the cylinders by the tension in the cables 17.
Patent GB-354726-A (GB)
Title: Improvements in reversible refrigerating apparatus employing a solid absorbent or an adsorbent
IPC: F25B17/08
Filed: 1930-05-12
Abstract: 354,726. Refrigerating. BOVING, J. O., Victoria Station House, Victoria Street, London. May 12, 1930, No. 14559. [Class 29.] Absorption machines.-The generator-absorber a of a reversing absorption or adsorption system is immersed in a liquid through which heat is transmitted during the generating period, and the displacement of the liquid due to the heating opens a valve g to permit the liquid to circulate by gravity through a cooling device e and back to the jacket of the generator-absorber, where it serves as the cooling medium during the absorption period. The generator-absorber is preferably annular and heated by a central flue, and the condenser k may be located in the liquid in the cooler e, which is gilled for air cooling. The valve g is actuated by a bellows f which moves with the change of pressure of liquid in the cooler and also serves to actuate a control i for the heat supply to the burner &c. h. In a system having two generator-absorbers working in opposite phases a common cooling device e may be employed. Preferably the bellows acts through a trip gear, as shown for a duplex system in Fig. 4, being fitted with a pawl u normally drawn by a spring u<1> towards a stop u<2> and adapted to advance a ratchet v of a switch or gas cock for the two heaters. The bellows is also connected with a spring-centred pawl w within the liquid space of the cooler adapted to engage one of two notches in a rocking disc x to close one valve g<1> and open the other valve g<2> of the cooling liquid systems. The evaporator, p Fig. 1, is arranged within a closed heat-insulated chamber l containing a condensible heat-transfer fluid which circulates in a closed cycle through a coil s in a brine tank o. The heat supply to the generator may also be controlled by a thermostat t, Fig. 1, in the refrigerating chamber n. The invention may be applied to systems using solid absorbents such as calcium chloride for sulphur dioxide or other refrigerant, and to charcoal or silica gel adsorption systems. Or a hydroxide and alcohol or water and ammonia may be used.
Patent GB-181940-A (GB)
Title: Improvements in and relating to electric heating units
IPC: H05B3/10
Filed: 1921-05-25
Abstract: 181,940. British Thomson - Houston Co., Ltd., (General Electric Co.). May 25, 1921. Wire resistances, cored; embedded.-An electric heating unit comprises a cylindrical casing containing a core of electrical insulating material and having a peripheral groove within which is disposed a helical resistance wire bent so that the axis of the helix lies in the groove, the casing being filled with granular insulating material. The core, of lava or other insulating material is supported by a stud 14 fixed to the casing 10 and has a groove 26 in which is placed the helical wire 13. This wire at one end is brazed to the casing to form a " ground " terminal and at the other end 22 is brazed to a terminal post 18 which is screwed into a disc 15. The disc is insulated from the stud 14 by a washer 17 and from the casing by @ washer 16. The casing is filled with a granular insulating material 23, and the cover 11 is subjected to pressure to consolidate the material. The cover 11 is finally held in position by pressing over the top sloping edge of the casing.
Patent GB-1509995-A (GB)
Title: Method of combined navigation of a barge or a lighter on sea and inland waters and apparatus for carrying out the said method
IPC: B63B35/28
Filed: 1975-04-09
Abstract: 1509995 Ship propulsion plant SOC NOUVELLE BIPT (BUREAU INTERNATIONAL DE PRESTATIONS TECHNIQUES) 9 April 1975 [12 April 1974] 14572/75 Heading B7V   A propulsion plant 12 is removably mounted on a barge 11, Fig. 1, and is transferable to another barge, Fig. 3, by a system of wheel trains on rails 27, 29.
Patent GB-1467203-A (GB)
Title: Inlet fitting for a water cistern
IPC: E03D11/00
Filed: 1975-04-09
Abstract: 1467203 Valves GEORG ROST & SOHNE 9 April 1975 14578/75 Heading F2V [Also in Divisions E1 and G3] A device 5 providing a helical flow path for water entering a cistern is arranged upstream of a diaphragm valve 3 to reduce noise and act as a filter, the inlet and outlet ducts 14, 18 of the device being arranged tangentially to the turns of the helix. The valve 3 is controlled by a pilot valve 122 mounted on a lever 12 operated by a float 9 on a slidable tube 8 coupled to the lever by an arm 11. Once the valve 3 has been opened by downward movement of the float water flows down a pipe 7 into the cistern and through a hole 74 into a bowl 10 discharged into an annular trough 91 in the float so that the valve is opened more rapidly. The float is made from closed cell foamed materal. Vanes 33 guide the diaphragm valve in its movements towards and away from its seat 19 while a nozzle 34 allows water from the inlet to enter the space behind the diaphragm which is thus held closed so long as the pilot valve is closed.
Patent GB-1137327-A (GB)
Title: A centrifugal separator drum
IPC: B04B1/08
Filed: 1967-03-30
Abstract: 1,137,327. Centrifugal separators. WESTFALIA SEPARATOR A.G. 30 March, 1967 [5 April, 1966], No. 14602/67. Heading B2P. In a plate-type centrifuge for treating a mixture of two liquids containing solids, blocking of the entrance to the heavy liquid discharge channel formed between the casing 1 and a divided plate 7 by solids accumulating in the sludge space 9 is prevented by providing a conical insert 10 which screens off the entrance to the discharge channel from the sludge space and is provided with accelerator blades 11 on its upper side whereby an accelerating chamber is formed between the plate 7 and the insert 10 having an inlet 13 at approximately the same radial distance from the drum axis as the outer rim of the set of plates 8 and an outlet 12 at the outer edge of a radial flange on the insert 10. The inlet 13 and outlet 12 are provided by a number of apertures in the. insert 10. The insert 10 may be integral with the uppermost separator plate (L.H.S. of drawing), or independent therefrom (R.H.S.). In operation, the mixture is directed in the separating chamber by a divider base 14, the interface between the separated liquids being indicated at 15. The heavier liquid entering the accelerating chamber through the apertures 13 is brought up to the speed of the drum by the blades 11 and due to pressure in the chamber decreasing towards the apertures 12, the flow of the heavy liquid in the chamber is in this direction, part of the heavy liquid being returned into the sludge chamber through the apertures 12 which are thereby kept clear of solids, and the other part leaving the drum at 16 through the discharge channel. Any solids entrained between the parts 1, 7 and 7, 10 are redirected to the sludge chamber 9 through the apertures 12. Sludge may be discharged through orifices 3 which can be opened and closed by a hydraulic valve 4.
Patent GB-1478750-A (GB)
Title: Liquid level indicators and installations incorporating the same
IPC: G01F23/24
Filed: 1975-04-09
Abstract: 1478750 Measuring liquid level electrically LIQUIDOMETER CORP 9 April 1975 [10 April 1974]  14638/75 Heading G1N In a liquid level gauge in which an upright electrically conducting probe 14 and a row of electrodes 18 are positioned adjacent to each other in the liquid to be monitored the potential of the probe 14 is monitored as an energizing voltage is applied successively to the electrodes 18. Electrodes 18 are coupled by respective shielded leads A, B ... VV to corresponding contacts 1,2,3 .. 24 of two rotary selector switches 104, 106 having wipers 108, 110 with one end of wiper 108 being connected via resistor 124 to a positive voltage and probe 14 is connected via shielded lead 46 and high input impedance unity gain amplifier 52 to comparator 76 and motor 134. In operation wiper 110 is moved to terminal 24 and wiper 108 to contact 122 so that a positive voltage is applied via lead VV to the top electrode 18, the remaining electrodes are coupled by high resistors 116 to the output 64 of the amplifier 52 so that they are maintained at a bias voltage substantially equal to probe 14. A shield constituted by sections 38, 40, 42 and 44 is also coupled to the output of amplifier 52 so that no potential gradients appear in the liquid. If the top electrode is not at least partially immersed in the liquid the potential sensed by probe 14 is zero and a light emitting diode 98 connected to the comparator 76 remains unenergized. The wiper 110 is then stepped anti-clockwise to each contact in turn until an electrode is energized which is partially immersed, wiper 108 being so stepped if the tank is less than half full, when the probe 14 senses a voltage which results in LED 98 being energized. The reading of the wiper 108 gives a coarse indication of the level and meter 134 gives a reading of how much the electrode 18 is immersed in the liquid. Details of a power supply circuit are given which has a timer incorporated therein, Fig. 2 (not shown).
Patent GB-769090-A (GB)
Title: Method of producing a photograph in glass
IPC: G03F7/00
Filed: 1955-05-20
Abstract: 769,090. Photographic image in glass. CORNING GLASS WORKS. May 20, 1955 [Sept. 29, 1954], No. 14649/55. Addition to 730,169. Classes 97(1). and 98(2) An image of silver or copper which may be of half-tone formation, or particularly may be of a kind suitable for use as reticle or scale requiring great dimensional accuracy, is made by producing the desired metal image by means of a photosensitive resist in continuous film formation directly in contact with a silcate glass containing an alkal metal oxide, heating the product in air sufficiently to oxidize and ionize the metal and cause migration of the ions into the glass; and then heating in a reducing medium to reconvert the ions to metallic particles. The resist-produced image of desired accuracy thus replaces a silver image resulting from development or transfer, and which image may lose accuracy in manipulation, of the otherwise similar main Specification. The metal image may be made by depositing a silver or copper mirror on the glass. applying the resist thereover, exposing, processing to remove unaffected areas of the resist and etching to remove metal from such areas; or by the reverse sequence, application of metallic film to the glass carrying processed resist, when metal which does not directly contact the glass is ineffective. In both cases residual resist is eliminated in the 'first heating step which may be of a temperature up to 700C. Numerous resists for the purpose. of the kinds used in the photo mechanical industry, are described. The two sequences of making the metal image indicated above may be applied successively to the same glass article to provide one image of silver, brown colour, and one of copper, red colour, therein. Specification 100,738 [Class 56] also is referred to.
Patent GB-215985-A (GB)
Title: An improved process for the purification of wool-washing waters, with recovery of the products which they contain
IPC: C11B11/00
Filed: 1923-06-04
Abstract: In the recovery of fats from wool-washing waters by adding calcium chloride or hydrochloric acid and excess of lime and extracting the precipitate with acetone by adding calcium chloride or hydrochloric acid and excess of lime and extracting the precipitate with acetone, boiling acetone is used, and the extracted wool-fat is isolated from the solvent and extracted lime and lime soap by distilling off the acetone, treating with soda solution, and centrifuging or adding alcohol.  Prior to the extraction with acetone the precipitate may be treated with steam to extract free fat.  The matter undissolved by the acetone is treated with hydrochloric acid to liberate the fatty acids and produce calcium chloride.  Or this matter, with or without the soluble soaps separated from the extract, is subjected to a current of superheated steam, e.g. at 180-280 DEG  C. to hydrolyze the soaps.  The basic residue may be used as a fertilizer.
Patent GB-168157-A (GB)
Title: Improvements in ploughs or like agricultural implements
IPC: A01B63/18
Filed: 1920-05-29
Abstract: 168,157. Ransomes, Sims, & Jefferies, Ltd., and Newson, T. May 29, 1920. Lifting-devices, power.-Means for raising and lowering a plough or like implement by rocking the cranked axle of a land-wheel comprises a pinion fast on the land-wheel, a rack adapted to engage the pinion, a depthregulating arm provided with locking-mechanism, and a trip plate for releasing the depth-regulating arm and moving the rack into engagement. The arm f is fixed on the cranked axle b and is locked by means of a bayonet-slotted link g engaging with a stud i on the spring-controlled trip plate j, which is loosely mounted on a cross-shaft k carrying the rack q and is connected by a link m to a lever l. The plough is lowered by pulling sharply on the lever l and thus causing the trip plate i to knock up the link and release the arm f, the depth to which the plough falls being regulated by a screwed rod r passing through a swivelling eye s on the arm f. The plough is raised by pulling steadily on the lever l until a screw-stud n on the plate j engages an arm o on the shaft k and turns the rack q into contact with the pinion c, which then raises the rack and the plough frame. The axles of the land and furrow wheels are connected by a screwed rod passing through swivelling nuts carried by brackets on the axles. An arm on the shaft k is connected by a link z<2> to an arm z<1> of a spring-actuated cam z.
Patent GB-1299637-A (GB)
Title: Exercise apparatus
Inventor: HENSON GLEN ERVIN
IPC: A63B21/018
Filed: 1970-03-26
Abstract: 1299637 Exercising apparatus G E HENSON 26 March 1970 [10 April 1969] 14763/70 Heading A6M [Also in Division B8] An exercising apparatus has a rope 66 secured to, and wound around, a spool 50 and adapted to be pulled by the user and means 72 disposed to yieldably resist the pulling of the rope, means to automatically reset the apparatus following each pull of the rope said means comprising a shaft 38, a spool 54 journalled on the shaft, and a spring 58 secured to the shaft 38 and the spool 54. The resisting means 72 includes a movable member 68 and drive means 70 coupled between spool 54 and member 68, the drive means including a ratchet to move member 68 when rope 66 is unwound and permit rewinding of the rope without moving member 68. The resistance to the pulling of rope 66 is governed by the rate of pulling of the rope via a centrifugal force responsive means which includes shaft 68, discs 84, 86 mounted on the shaft, and a pair of levers 102 pivotally secured to and having ends engaged with disc 84 and weights 108 carried by the free ends of the levers. The speed of rotation of shaft 68 shifts levers 102 to clamp discs 86 and 84 on friction member 92.
Patent GB-528956-A (GB)
Title: Cooling of sleeve valve internal combustion engines
IPC: F02F1/34
Filed: 1939-05-18
Abstract: 528,956. Cooling cylinders and spark-plugs. JAMISON, R. R. May 18, 1939, No. 14841. [Classes 7 (ii) and 7 (iv)] The depending head B of a sleeve-valve engine is cooled by air led downwards between the wall F<1> of the recessed head and a baffle D, and then under the baffle and through a series of spiralshaped fins E directed towards a pair of sparkplugs C. The baffle D is made of sheet metal, with its lower end turned up at D<1> and arranged to rest on the top of the fins.
Patent GB-559675-A (GB)
Title: Improvements in and relating to fulling or planking machines
IPC: D06C17/02
Filed: 1940-10-04
Abstract: 559,675. Felting hats. BOHM, V. C. Oct. 4, 1940, No. 14888. [Class 63] A frilling or planking machine comprises one or more main rollers 1 and a plurality of smaller secondary rollers 4 - - 7 co-operating with each main roller. The main rollers may have the usual axial reciprocating movement and may be longer than the secondary rollers, groups of which may be positioned alternately above and below along its length. The secondary rollers may be urged toward the main roller by springs 14, and the pressure between the rollers may be adjustable, a cable 15 having means for tensioning it. The rollers may be hollow, of rustless steel, and covered with rubber or artificial resin. Preferably, the covering is grooved or roughened.