baber/WOPTO huggingface dataset:
Patent GB-764130-A (GB)
Title: Steam generating unit
Inventor: KUHNER MAX HENRY
IPC: F22B37/14
Filed: 1955-01-13
Abstract: 764.130. Water-tube boilers; regulating steam temperature. RILEY STOKER CORPORATION. Jan. 13, 1955, No. 1056/55. Classes 123(2) and 123(3) A water-tube boiler comprises a steamgenerating tube-lined furnace 11 fired by burners 15 disposed in the front wall, the upper portion of the back wall 35 of the furnace being additionally lined by radiantly heated reheater tubes 26 which are bent forwardly to form a screen at the top of the furnace behind which is disposed the high temperature section 22 of the superheater, the screen' tubes being spaced so that superheater section 22 is heated partly, by radiant heat from the furnace. Gases leaving the furnace pass laterally through the screen and superheater section 22 and a convection heated reheater section 28 and flow downwardly through a pass disposed between the rear wall 39 of the boiler and a baffle 38 and locating the low temperature superheater section 20 and an economizer 46. The space between the baffle 38 and the back wall 35 of the furnace constitutes a by-pass passage for the superheater downpass, the gas flows through downpass and by-pass being controlled by dampers 43. Steam from the steam and water drum 16 passes downwardly in tubes 19 lining the downpass, upwardly in superheater section 20, through superheater section 22 and then downwardly in tubes 23 which line the forward side of the by-pass to an outlet header 24. Steam to be reheated enters the generator at 25, passes upwardly through the radiantly-heated tubes 26 at high velocity to prevent overheating, through reheater section 28 and downwardly in tubes 29 which pass to and fro across the by-pass passage to an outlet header 30. The temperature of superheat is regulated by the use of an interstage attemperator, not shown, and by adjustment of dampers 43 whilst the temperature of reheat, which remains substantially constant at all loads due to the proportioning of the radiantly and convectively heated reheater surfaces can also be regulated if necessary by varying the gas flow through the by-pass passage. The provision of radiantly heated superheater and reheater sections allows high steam temperatures to be attained whilst ensuring that the temperature of combustion gas leaving the furnace is sufficiently low for ash entrained therein, particularly when firing low grade fuel, to be in a dry condition.
Patent GB-538188-A (GB)
Title: Improvements in or relating to evaporators for refrigeration apparatus, particularlyfor use in ice cream freezers, methods of making evaporators, and ice cream freezersincluding such evaporators
IPC: F25B39/02
Filed: 1940-01-17
Abstract: 538,188. Refrigerating. CHERRY-BURRELL CORPORATION. Jan. 17, 1940. No. 1066. Converition date; Jan. 26, 1939. [Class 29] Evaporators. A refrigerant jacket around a freezer cylinder 37 is formed by assembling thereon a series of split flanged rings 116, the flanges :117 being cut away at 119 adjacent the slits and ribs 120 being placed in the. slits-and the whole secured together by welding to provide a helical passage for refrigerant. A heat exchanger 84 to precool the inlet refrigerant by the returning vapours and manual valves 87,91 and a thermo-static valve 90 are provided. The agitating means in the freezer chamber are those set forth in Specification 538,187.
Patent GB-292040-A (GB)
Title: Improvements in and relating to sign posts
IPC: E01F9/011
Filed: 1928-01-12
Abstract: 292,040. Cooke, S., and Automobile Association, Ltd. Jan. 12, 1928, Reflectors.-A road sign comprises lightreflecting or self-luminous signal devices which are secured by cement or asphalt 9 in perforated discs 6 carried by a post. In a modified construction, the discs 6 are formed with socket holes in which the reflectors are secured by cement.
Patent GB-845789-A (GB)
Title: Moulding sand for the shell moulding process and a process for the production of the moulding sand
IPC: B22C1/22
Filed: 1958-01-13
Abstract: Moulding sand for the shell moulding process is coated with a synthetic resin coating, comprising one or more ketone-aldehyde resins, preferably ketone-formaldehyde resins, which may be employed in the form of intermediate condensates of one or more ketones with formaldehyde, in an incompletely hardened condition. Such condensates may be applied dissolved in an organic solvent, which may be in excess of the ketone component of the condensate. The ketone-aldehyde resin may be formed on the sand granules in situ by adding a suitable reaction mixture, for example a ketone, and a substance capable of splitting off formaldehyde, such as hexamethylene tetramine or paraformaldehyde.  Alternatively the ketone, such as acetone, methyl isobutyl ketone, mesityl oxide, diacetone alcohol, and methylanone, is reacted with formaldehyde in the presence of a basic condensation agent.  The ketone may be present in sufficient excess to dissolve the synthetic resin formed.  A catalyst having a gentle action, such as sodium aluminate, magnesia, guanidine, or dicyandiamide, may be present. Other synthetic resins may also be present in the coating, such as coumarone styrene or novolak resins and phenolformaldehyde resins, especially phenolformaldehyde novolak resins.  The phenolformaldehyde resin may be applied to the sand in a finely divided or dust-like condition, and converted to a plastic state by adding an initial condensate of one or more ketones and formaldehyde, or a mixture which will form such condensate. Conveniently a liquid mixture containing one or more ketones of relatively high boiling point, and which is capable of both plasticizing the resin coating and forming a ketone-aldehyde resin which remains with the resin already on the sand on evaporation of the readily boiling constituents of the liquid mixture, may be employed.  Another method of coating the sand comprises softening a synthetic resin with one or more organic solvents, for example alcohol, adding thereto a ketone of relatively high boiling point, for example cyclohexanone, capable of forming a ketone-formaldehyde synthetic resin, and a substance which can split off formaldehyde, bringing this mixture to a suitable viscosity for application to the sand granules by adding a low-boiling solvent, for example acetone, applying the mixture to the sand, and permitting the low-boiling constituent to evaporate. Hardeners may also be present in the synthetic resin coating. Specification 845,790 is referred to.
Patent GB-269643-A (GB)
Title: Improvements in methods of generating electrical and mechanical oscillations
IPC: H03B5/30
Filed: 1926-01-18
Abstract: 269,643. Eccles, W. H., and Leyshon, W. A. Jan. 18, 1926. By varying inductance. - Oscillations are generated, sustained, and stabilized by the interaction of a mechanically-vibrating member, such as a tuning-fork and an electric system comprising a negative-resistance device, such as a Duddell or Poulsen arc, an oscillating or " singing " crystal or the triode combination described in Specification 148,582. Or an equivalent device such as a Neon flash lamp or a soft triode valve may be used. The invention is distinguished from that disclosed in Specification 155,854. As shown in Fig. 1, a Neon lamp N, shunted by a condenser C, is connected in series with a battery B, a resistance R, and an electromagnet M. The inductance of the magnet M is varied by the vibration of a tuning fork F in such a way as to coerce the system into sustained oscillation at the frequency of the fork. Fig. 3 shows a " singing " crystal circuit in which the coils X, Y, or Z may constitute electromagnets acting upon a tuning fork. In Fig. 2 a soft triode valve V comprises a resistance R shunted by a condenser C in the plate circuit, and coils M, M<1> in the grid and plate circuits respectively which coact with the control fork F. When any of the systems described are adjusted to the threshold point of oscillation, they can be used to function as a sensitive selective relay under the impulse of external excitation.
Patent GB-1068152-A (GB)
Title: Mass-flow measuring device
Inventor: HUTCHEON IAN CARRODUS
IPC: G01F1/90
Filed: 1963-01-11
Abstract: 1,068,152. Measuring mass flow electrically. GEORGE KENT Ltd. Jan.6, 1964 [Jan.11, 1963], No.1367/63. Addition to 1, 028,143. Heading GIN. [Also in Divisions H3 and H4] The system of Specification 1, 028,143 is modified in that the two diode pumps C3, D3, D4 and C5, D5, D6 are operated by the same train of input pulses t, through transistor J2 and transistors J14, J15, J3 respectively, to feed respective positive and negative voltage pulses to the reservoir capacitor C4. The negative pulses exceed the positive pulses in amplitude so that the voltage across capacitor C4 falls and at a certain value operates, through an amplifier A12, a bi-stable circuit A13 to block the driving pulses to the diode pump C5, D5, D6 until the next input pulse t via the other diode pump raises the voltage across C4 to reverse the bi-stable circuit A13 and remove the blocking signal. The mean output pulse frequency taken from the transistor J15 thus varies in accordance with the amplitude and frequency variations of the input pulses t which may be derived from a fluid-flow transmitter and corrected in the diode pump circuit C3, D3, D4 for variations in temperature of the fluid and its specific gravity by adjustable resistors RV1, RV2 as in Specification 1,028,143. The output pulse frequency then measures mass flow. The amplifier A12 may be a chopper type D.C. amplifier with output smoothing circuit R22, C16. To prevent spurious operation of the bistable circuit A13 during the blocking state thereof an inhibit signal is fed from transistor J14 during the intervals between input pulses t.
Patent GB-748884-A (GB)
Title: Process for the production of fluorescent compounds
IPC: D21H21/30
Filed: 1953-01-19
Abstract: Easily water-soluble fluorescent compounds are obtained when a difficultly water-soluble fluorescent amine which contains in the amino group at least one hydrogen atom linked to the nitrogen atom is reacted with an aliphatic sultone containing at least 3 carbon atoms per molecule.  The emission wavelength of the amines lies between 380 and 780 mm  with water as a solvent.  Specified sultones are propane sultone and 1,3-, 1,4- and 2,4-butane sultone.  Fluorescent amines free of sulphonic or carboxylic acid groups are particularly referred to, those mentioned being of the benzthiazole, benzimidazole, benztriazole, coumarin, quinoline and pyrene series.  The reaction is preferably effected at elevated temperature.  The products are optical bleaching agents. In examples a mixture of 1,3- and 1,4-butane sultones is reacted with (1) 2-(41-aminophenyl)-5-methylbenzthiazole, (2)5-amino-2-phenylbenztriazole, (3) 7-amino-4-methyl-coumarin, (4) 7-ethylamino - 4 - methyl - coumarin, (5) bis-(benzimidazolyl - 2) - ethylene, (6) 2 - aminopyrene, (7) 7 - amino - 2 - hydroxylepidine, (8) the sodium salt of bis 4,41-(p-aminobenzoyl-p-aminobenzoyl) - aminostilbene - 2,21 - disulphonic acid and (9) 3-aminopyrene.
Patent GB-785860-A (GB)
Title: Improvements in or relating to rotary piston blowers
IPC: F04C29/04
Filed: 1956-01-17
Abstract: 785,860. Rotary blowers. DUNKEL, M. Jan. 17, 1956 [Jan. 17, 1955], No. 1576/56. Class 110 (2). A blower of the Root's type has cooling means for the rotors 11, 12, the cooling fluid passages being under low pressure or vacuum. Oil, water or air may be used as a coolant which passes through a heat exchanger, and may be controlled by a thermostat. In the Figures, one or more circulating pumps 20, in an evacuated space 21, supply the coolant to pipes 13, 14, which lead to the insides of hollow rotor shafts 1, 2, through diaphragms 15, 16 or 23, 24. In Fig. 1, the coolant circulates through the rotors by way of passages 7, 9 or 8, 10, but these are dispensed with in Fig. 2. The coolant may also be used for cooling the shaft bearings, or other parts of the blower.
Patent GB-547038-A (GB)
Title: Rectifier circuits
IPC: H02M7/06
Filed: 1941-02-07
Abstract: 547,038. Automatic volume control. STANDARD TELEPHONES & CABLES, Ltd. Feb. 7, 1941, No. 1634. Convention date, Feb. 17, 1940. [Class 40 (iv)] In a carrier transmission system such as that described in U.S.A. Specification 2,066,514 in which the gain of a repeater is controlled in accordance with the strength of a pilot current, the receiver of the pilot current is set normally off tune so that any decrease in the efficiency of the copper oxide rectifier 13, owing to a change in temperature, is off-set by the accompanying change in the capacity of the rectifier which brings the receiver more nearly into tune. The receiver is first tuned in the ordinary way with an inductance. 11 connected up and a switch 12 is then opened to disconnect the inductance and so put the receiver in the necessary off-tune condition.
Patent GB-1000351-A (GB)
Title: Improvements in electric switches
Inventor: BUCKTON KENNETH JAMES
IPC: H01H23/16
Filed: 1961-01-14
Abstract: 1,000,351. Switches held set and freed mechanically. REEVES & CO (BIRMING- HAM) Ltd. Jan. 14, 1962 [Jan. 14, 1961], No. 1635/61. Heading H2B. A switch comprises two terminal posts 9 mounted upon an insulating circular base 1 on opposite sides of a sheet-metal bridge 5 supporting a dolly or rocker 17 arranged to move the free end of a blade into engagement with one of the posts against a spring bias 13. The head of the bridge is domed and supports a sheet-metal cover 3 making a friction fit therewith. Depending arms 6 of the bridge 5 are turned outwards and attached to the base 1 by hollow rivets (Fig. 2, not shown) through which mounting screws may be passed.
Patent GB-157962-A (GB)
Title: Improvements in or relating to balancing rotating bodies
IPC: F01D5/02
Filed: 1921-01-10
Abstract: 157,962. Schenck Eisengiesserei und Maschinenfabrik Darmstadt Ges., C., and Heymann, H. Nov. 30, 1918, [Convention date]. Testing balance of rotary apparatus.-For balancing rotary bodies, a bearing device is used in which certain members have a sliding movement and others a rotary movement relatively to the frame, the sliding members being held fast when desired while permitting the others to rotate. The disc C, Figs. 1 and 2, upon which the ordinary bearing B may be placed in which the test object will subsequently be mounted when in practical use, is mounted so that its vertical journal rotates in a step ball-bearing E in a member F. The member F is mounted to slide at right-angles to the axis a-a on ball bearings G, such movement being controlled by adjustable springs K, K. The ball-bearings H between the upper surface of the member F and stays J prevent excessive jumping of the member F, and the ball bearings G are constructed with play to allow of vibrations along the axis a-a. The member F'may be held against movement by wedge members on rockers N operated from a lever V and adapted to engage wedge surfaces on the member F, the rockers on opposite sides being operated simultaneously through a linkage S, Y, Z. An additional brake W operated by the hand-lever V is also provided. In use, the shaft carrying the body to be balanced is mounted on two bearing devices constructed as described above. The body is first set in rotation with both bearing devices locked,. and the speed increased to a value exceeding that at which resonance of the oscillatory system be-- gins. The drive is' now disconnected, and the brakes on one of the bearing devices released, the body being allowed to oscillate about the vertical pivot of the other device; and the position and dimensions of the compensating weight determined in known manner. The device first released is then locked and the other device released, a similar determination being made. Further balancing is effected anew, and so on. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a form in which the member F is mounted on links, a flat spring taking the place of the springs K. This subjectmatter does not appear in the Specification as accepted.
Patent GB-667072-A (GB)
Title: Stereoscope for viewing stereoscopic pairs of pictures
IPC: G02B27/22
Filed: 1950-01-23
Abstract: 667,072. Stereoscopes. ELIAS, J. J. Jan. 23, 1950, No. 1674/50. Class 97 (i). A stereoscope comprises two pairs of mirrors A, A<SP>1</SP>, B, B<SP>1</SP>, each pair before one eye, each mirror being hinged at both ends to cross-bar axles of a frame, the axles D3, D4 of the mirrors A1, B1 being movable in slots E1, E2, respectively and clamped in position by finger screws G<SP>1</SP>, G<SP>2</SP> to adjust the angle of the mirrors A<SP>1</SP>, B<SP>1</SP> for viewing pictures at different separations and different distances. The folding frame shown comprises eyepiece frames F<SP>1</SP>, F2 having viewing apertures and hinged together by a bracketW which carries a distance-piece H having a slot in which slides an axle D<SP>9</SP> to which are hinged object frame members F<SP>3</SP>, F'. The members F3, F' carry axles D<SP>5</SP>, D<SP>5</SP>, D<SP>7</SP>, D<SP>8</SP> to which the mirrors are hinged and have apertures through which the stereoscopic pictures can be seen. To fold the frame the finger screw G<SP>3</SP> on the axle D<SP>9</SP> is released and the latter slid to the lower end of the slot in the distance-member H., the members F3, F<SP>4</SP> and F<SP>1</SP>, F<SP>2</SP> hanging towards each other. The members F<SP>1</SP>, F<SP>2</SP> may carry a band for attachment to the head or the device may be fitted to a spectacle type frame.
Patent GB-719024-A (GB)
Title: Electrical plug connectors and contacts therefor
IPC: H01R25/00
Filed: 1953-01-21
Abstract: 719,024. Two-part couplings. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Jan. 21, 1953, No. 1719/53. Class 38 (1). A contact 48 bent from a sheet metal blank, Fig. 7, comprises a pin-receiving tube 53 having a projection 54, and two apertured plates 55, one of which plates has a screw-threaded aperture 57 and is bent at its end to provide an abutment for a lead 6o clamped between the plates 55 when a screw 58 is tightened. Three such contacts are laid in grooves 44 in one half 34. of a plug the projections 54 seating in locating recesses 45. The socket 15 is attached to a bracket 10 fixed onto a sewing machine. Insulating sleeves 42, 41 round one two-core and one three-core cable 47, 46 respectively, are gripped between the plug halves 34, 35 when these are bolted together, the cables supplying a light fixture, the motor, and the motor controller. Earth contacts 22 and 28 are provided on the socket and plug respectively.
Patent GB-327735-A (GB)
Title: Improved means for promoting screw propeller efficiency and for steering
IPC: B63H5/16
Filed: 1928-12-04
Abstract: 327,735. Heide. H. C., (Costanievich, L.). Dec. 4, 1928. Divided on 327,719. Controlling. - A streamline b o d y placed immediately behind an airscrew or other screw propeller so as to fill the normal medial cavitation area is formed as a rudder or a part of a rudder. The rudder 1. Fig. 1, is formed with a central streamline body 2 placed immediately aft of the propeller. The forward nose of the body 2 may have a duct 8 to which fluid is supplied and the tail member 2' may be lined up in the direction of the slip stream. For attachment to an existing rudder, the rudder is provided with an added streamline, body 2, Fig. 4, and the rudder post has a cover 9. In any of these constructions the section through the stream line body may be made slightly asymmetric, and further, the upper and lower parts of the rudder blade may also be given a set so as to act as counter propeller blades.
Patent GB-535961-A (GB)
Title: Improvements in or relating to radio altimeters
IPC: G01S19/49
Filed: 1940-01-29
Abstract: 535,961. Locating objects by reflected waves; condensers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 29,1940, No. 1787. Convention date Jan. 28, 1939. [Class 37] In order to measure the distance from a point to a wave-reflecting medium a wave is radiated from the point and reflects back to the point, the frequency is continuously varied over a band of variable width, the radiated and reflected waves are combined, and the resultant wave is demodulated. As shown diagrammatically in Fig. 5, a low-frequency oscillator 31 is connected to a synchronously driven modulator 33, which is in turn connected to a high-frequency transmitter 35. The output of the transmitter is applied to a dipole antenna 37 which may include a reflector 39. The receiving device consists of a receiving antenna 41, a reflector 43, and a radio receiver 45. The output of the receiver is connected through an audio-frequency amplifier 47 to a direct indicating frequency meter 49. An oscillating detector connected to a single antenna may replace the transmitter 35 and receiver 45. The frequency of the radiated wave is varied by different amounts over the same periods of time, as shown by the curve 55, Fig. 7. This modulation may be produced by the modulator shown in Fig. 8 in which a common motor 57, having a speed of one revolution per second and operative through gears 59, 61 having ratios of 1 to 50 and 1 to 58, drives rotors 63, 65. These comprise a pair of semi-circular plates which are insulated from their shafts and from pairs of stator plates 67, 69 connected in parallel pairs. Instead of using gears, two motors operating at different speeds may be employed, or a single motor may drive rotors having different numbers of blades. In another arrangement, Fig. 10, a generator 77 of currents having a frequency of the order of 120 cycles per second is amplitude modulated by a second generator at a frequency of 15 cycles per second. The resultant amplitude-modulated currents are applied to a piezo-electric device 79 connected to a movable capacitor plate 81, which is thereby vibrated with respect to a pair of fixed capacitor plates 83.
Patent GB-698955-A (GB)
Title: Clips or clamps for connecting tubes
IPC: E04G7/14
Filed: 1951-01-24
Abstract: 698,955. Making scaffold clamps. WIGGIN, A. L. Jan. 24, 1952 [Jan. 24, 1951], No. 1787/51. Class 83 (ii). [Also in Group X] A scaffold clamp comprises an intermediate member formed from a mild steel strip 10, Fig. 1, with arcuate cut-outs 17, which, when the strip is bent into box or tubular form and welded together at the ends 12, form seatings for two tubes at right angles, the clamping straps 29, Fig. 3, being pressings of channel section. The strip 10 is also formed with rectangular cut-outs 18 across which pivots 30 for the straps 29 are welded and the strip is slotted at 19 to form lugs 20 which are bent out to act as abutments for the T-heads 33 of the clamping bolts 32. The pivots 30 may be secured to lugs similar to the lugs 20.
Patent GB-726974-A (GB)
Title: Titanium-manganese-molybdenum alloys
IPC: C22C14/00
Filed: 1953-01-21
Abstract: A Ti-base alloy consists of: Mo 0.5-16 per cent; Mn 0.5-16 per cent; the balance, which is at least 70 per cent, Ti with impurities.  A preferred alloy contains 2-10 per cent Mo and 2-10 per cent Mn.  The alloy may be hot-rolled at 1450 DEG  F. and aged at 750 DEG  F. for 4 hours.