baber/WOPTO huggingface dataset:
Patent GB-241039-A (GB)
Title: Improvements in variable power transmission mechanism
IPC: F16D31/02
Filed: 1924-10-28
Abstract: 241,039. Gayer, E. C. Oct. 28, 1924. Variable-speed gearing comprises an epicyclic train q, r, s, t, Fig. 1, controlled by a fluidpressure clutch, which varies the speed automatically in accordance with the load, and which comprises auxiliary plungers n, Fig. 2, for maintaining the fluid pressure. The sun gears q, t are secured to driving and driven members a, c respectively. The planet gears r, s are carried by a revoluble frame d, which carries four pistons e‹ arranged in two pairs between which fluid is exchanged through a valve i when the frame d slips relatively to a surrounding eccentric o upon the shaft a or the shaft c. The valve plunger i is yieldingly held so as to close, a port k by a governor i, Fig. 1, and a spring m<1>, or by the latter alone. A chamber l, Fig. 5, communicates by a duct l<2> with the port k, and when the liquid pressure falls a control plunger m is thrust to the left by the spring m<1>. This through a lever p<2> thrusts in a stop valve p<1> and allows the auxiliary plungers n to draw liquid through a pipe m<5> dipping into a sump in a fixed casing b along a passage p, and to discharge it through a passage l<1> to the chamber l. As the pressure there and under the pistons e<o> is replenished, the plunger m is returned to the right, closing the valve p<1>.
Patent GB-610544-A (GB)
Title: Device for regulating the pitch of two counter-rotating co-axial propellers
IPC: B64C11/42
Filed: 1945-11-30
Abstract: 610,544. Variable-pitch propellers. DOUSSAIN, R. Nov. 30, 1945, No. 32438. Convention date, March 27, 1942. [Class 114] Two contra-rotating variable-pitch air-screws are controlled jointly to maintain equal torque in their propeller shafts, one propeller being controlled directly by the pilot. Torsion meters 9, 11 transmit impulses to the solenoids 32, 34. With torque differences one solenoid closes the switch 35 or 36 actuating electromagnetic clutches 24a, 24b of a differential gear train to vary the pitch of propeller 18.
Patent GB-1070373-A (GB)
Title: Improvements in or relating to atmospheric humidity measuring apparatus
IPC: G01W1/08
Filed: 1964-08-10
Abstract: 1,070,373. Determining humidity electrically. R. SCHACHENMEIER. Aug. 10, 1964 [Aug. 8, 1963], No.32475/64. Heading G1N. A radiosonde transmits signals representative of the refractive index, ambient pressure and temperature of the atmosphere to a ground station where from a measure of humidity is derived. In Fig. 1, capacitors C2, C6, C7 which are variable with temperature T, pressure P, and refractive index n respectively, are successively switched into an oscillator circuit by switch 16 and each in turn controls the transmitted frequency from aerial 15a. At the ground station the three frequencies are identified and detected and provide a record of the parameter concerned. The required partial pressure e of the vapour in the atmosphere is calculated from the equation:- and the humidity may be calculated from the result. The refractometer capacitor C7 has two plates carried on a cantilever from the radiosonde such - that the atmosphere passes between the plates and acts as the dielectric which is variable and the capacitance is a measure of the refractive index. Capacitors C2, C6 each have a movable plate coupled to temperature sensitive bi-metal strip and to a diaphragm type barometer respectively. Instead of frequency modulation as above the measured values of n p and T may be transmitted by coded pulses having a constant high frequency, each measuring capacitor being connected in a bridge Fig. 5 (not shown) the unbalance output of which is used to select a coded signal. A mathematical analysis of probable errors in evaluation of signals is given.
Patent GB-1438677-A (GB)
Title: Variable-geometry nozzle with a muffler or silencer effect  for a jet engine
IPC: F02K1/12
Filed: 1973-07-09
Abstract: 1438677 Jet propulsion nozzles - variable geometry SOC NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION 9 July 1973 32632/73 Heading F1J The invention relates to a variable-geometry nozzle for a jet engine, the nozzle comprising a fixed structure, flaps adjustable in position with reference to the fixed structure, and control means for adjusting the position of the flaps. In a first embodiment the nozzle comprises a fixed structure 2 defining a jet pipe through which streams of gases F1 and air F2 flow. A series of brackets 6 are secured to the structure 2 and four C-shaped members 101, 102, 103, 104 are pivotally mounted on the brackets, the upper member 101 for example being pivotally mounted on brackets 6 about a horizontal axis A1-A1 and a side member 102 being pivotally mounted about a vertical axis A2-A2. The members are pivotally movable by means of actuators V1, V2, V3, V4. A main flap member 201a, 202a, 203a, 204a is rigidly secured to the centre portion of each member 101, 102, 103, 104 by means of bolts 8, and side flaps such as 201b, 201c are pivotally mounted at each side of each of the main flaps such as 201a, the adjacent side flaps such as 201b, 204c engaging in overlapping manner. The flaps may be moved so that the outlet area is either of horizontal rectangular form, of vertical rectangular form, of small area square form or of large area square form. When the actuator V 1 for example is actuated the top main flap 201a is swung about the pivotal axis A1-A1 to the position shown in Fig. 2 thus forming a tertiary air inlet 11 for air-flow F3, this being the position of the flaps 201a, 203a in the horizontal rectangular nozzle form and in the small area square nozzle form. The flaps 201a, 203a are in the Fig. 1 position for the vertical rectangular and large area square nozzle forms. In Fig. 7 (not shown) each main flap such as 201a is not flat as in the first embodiment, but is of flattened V-section so that the nozzle approaches more closely a circular form; also the pivotal axes such as B1, C4 of adjacent side flaps 201b, 204c are inclined at an angle less than 90 degrees; the axes meet at the same point 0 as that in which the Axes A 1 -A 1  and A 4 -A 4  meet. In Fig. 8 (not shown), there are six C-shaped members such as 101 and six main flaps such as 201a and of course six pivotal axes such as A 1 -A 1  ; thus the nozzle is of polygonal form. In a further embodiment Figs. 13-16 (not shown) the nozzle comprises only two C-shaped members 51, 52 which are pivotally mounted on parallel axes C 1 -C 1  and C 2 -C 2 . Two flap members 61, 62 and 63, 64 are pivotally mounted on each C-shaped member and four actuating jacks are provided whereby the nozzle may be adjusted to any of the four positions described with reference to the first embodiment.
Patent GB-1393766-A (GB)
Title: Pulse supply arrangement for supplying a two-channel switching arrangement
IPC: H03K19/007
Filed: 1972-07-12
Abstract: 1393766 Pulse generating and monitoring Circuits SIEMENS AG 12 July 1972 [16 July 1971] 32672/72 Heading H3T In a pulse generating and monitoring system two channels each comprising two bi-stable circuits in sequence DF1, DF3 and DF2, DF4 produce antiphase control pulses 201, 301 at inputs 2, 3 of a logic or other control circuit SW of the type comprising two parallel paths operating in antiphase and also produces control pulses 101, monitoring pulses 102 at the edges of the control pulses and intermediate pulses 103 between the edges, the channels being so controlled that if the output pulses or the control circuit paths are in phase the generating system ceases to operate. In the transistor arrangement shown an exclusive OR circuit U passes the monitoring pulses 102 only if the channel outputs are in antiphase and these monitoring pulses are fed to the priming input of a D-type bi-stable circuit DF2 of the lower channel and via the control circuit SW to the priming input of a D-type bi-stable circuit DF1 of the upper channel. Accordingly, in normal operation, these circuits are changed in state by the control pulses 101. Two D-type slave bi-stable circuits DF3 and DF4 receive in antiphase the outputs of the first circuits and produce the antiphase output signals 301, 302. Delayed timing signals for DF3 and 4 are derived from a bi-stable circuit F1 which is set by the monitoring pulses from U and reset by the intermediate pulses, the output from F1 normally passing via L6. If the antiphase condition of the control wave fails the exclusive OR circuit U no longer provides the monitoring pulses and the channels cease to switch. Similarly, as the monitoring pulse path through SW to DF1 includes exclusive OR circuits, failure of the antiphase condition in SW also causes the channels to cease switching. In order to prevent transitory failures in the switching circuit from causing permanent cessation of operation a circuit ST replaces connection L6. If an exclusive OR gate EO detects concurrence of the phase of the outputs EF1 and DF2, a monostable circuit MF1 blocks the timing pulse input from a delay circuit V to DF3 and DF4 so that they remain in an antiphase state long enough to allow normal operation to restart if the switching circuit resumes normal operation. A switch T is provided to set DF3 and DF4 to the antiphase state after a fault has been cleared.
Patent GB-287819-A (GB)
Title: Improvements in lifeboats
IPC: B63C9/02
Filed: 1927-12-03
Abstract: 287,819. Neill, D. S. Dec. 3, 1927. Fenders.-A lifeboat of the cylindrical enclosure buffer is provided with a horizontal fender 16 vertical end fenders 17 i and spherical side fenders 18 rotatably mounted in brackets.
Patent GB-501624-A (GB)
Title: Improvements in the manufacture of luminescent screens
IPC: C09K11/02
Filed: 1937-11-26
Abstract: 501,624. Luminescent screens. GENERAL ELECTRIC CO., Ltd., JENKINS, H. G., and McKEAG, A. H. Nov. 26, 1937, No. 32694, [Class 39 (i)] Before application to the screen surface, luminescent material is mixed intimately with a small amount, e.g. ¢-1 per cent, of phosphoric acid and enough liquid to form a paste and after drying and grinding, the resulting powder is treated to eliminate the coarser particles. The liquid may be water, e.g. by employing a 5 per cent solution of the phosphoric acid of the kind sold under the Registered Trade Mark " Analar." The drying is conducted for one hour at 200‹ C. and the sieve is of 240 mesh. Phosphoric acid may also be used as the binder.
Patent GB-692563-A (GB)
Title: Improvements in apparatus for dispensing liquids by air pressure
IPC: A61L2/24
Filed: 1949-12-21
Abstract: 692,563. Disinfecting sinks. BAKER, E. H. Dec. 21, 1950 [Dec. 21, 1949], No. 32773/49. Class 26 [Also in Groups II and XXVIII] Apparatus for dosing one liquid by another liquid comprises a container 1, for the dosing liquid, having a discharge duct 13 opening into the container at or near the lower end thereof and a control duct 5 whose lower end is adapted to be submerged by the liquid to be dosed and which opens at its upper end into the upper end of an air chamber 8 whose lower end is open to the interior of the container. Liquid rising up the control duct causes an increase of air pressure in the air chamber and hence in the container, whereby the dosing liquid is dispensed in proportion to the rise of liquid in the control duct. The container is supported on a bracket 17 whose vertical position may be adjusted by nuts 21. The lower end of the control duct may be formed as an inverted U-tube one limb of which extends lower than the other limb whereby the control duct is completely drained by syphonic action when the level of the liquid to be dosed falls below the upper limb. The apparatus is of particular use for supplying liquid disinfectant to washing water. The air chamber 8 prevents the dosing liquid from being discharged by normal atmospheric temperature rises.
Patent GB-460960-A (GB)
Title: Improvements in and relating to film magazines for use in the reproduction of sound
IPC: G11B23/04
Filed: 1935-06-04
Abstract: 460,960. Kinematograph and like spool boxes. KOLB, O. K., and WENDER. E. J. June 4, 1935, Nos. 21275/35 and 32793/36. Divided out of 457,857, [Group XXXVIII]. [Class 97 (i)] A photographic sound - record film b is mounted on spools ea, eb within a casing f which is adapted to be clamped to the soundreproducing machine so that film driving spindles on the machine make driving engagement with the walls of conical apertures ga, gb in the spools. The film is led round rollers in the casing so that when a thickened portion near the ends of the film passes over a roller, a lever fe (or ff according to the direction of rotation) is actuated, breaking a circuit governing the film driving motor. The casing is positioned against a fixed abutment ha and clamped by an eccentric hb, which, in the locked position closes a switch s governing the operation of the reproducing machine. The film mav be held at its ends between adhesive tapes on the spools, the variation of thickness at the portions of the film held by the adhesive tapes being used to actuate the levers fe, ff. The casing may be removed and reversed or the levers fe, ff may actuate means for reversing the drive of the spools. Specification 457,857 is referred to in the second Provisional Specification.
Patent GB-188982-A (GB)
Title: Improvements in or relating to extensible suction pipes for pumps
IPC: B67D1/08
Filed: 1921-12-07
Abstract: 188,982. Hill, E. H., and Hill, H. Dec. 7,1921. Suction pipes.- The suction pipe d of a pump is made telescopic so that the end is always near the bottom of the vessel in which the pump is mounted. The ends of the pipe d and pump barrel a are provided with packing e, f which prevents undue extension of the pipe.
Patent GB-1194208-A (GB)
Title: A Device for Driving the Programming Cams of an Electric Switch Programmer.
IPC: D06F34/30
Filed: 1967-07-18
Abstract: 1,194,208. Time switches. CROUZET. 18 July, 1967 [22 July, 1966; 14 Nov., 1966], No. 32850/67. Heading H1N. A programming cam assembly is stepped at different time intervals by intermittent engagement with a continuous drive when an electromagnet is pulsed to engage a toothed clutch, pulses at different frequencies being provided by the same continuous drive and selected automatically by a cam or cams on the stepping assembly itself. Shaft 7, geared from a synchronous motor (not shown), drives gear-wheels 8, 11 to rotate a sleeve 10 having fingers 10a which are slidingly engaged by a wheel 12 attached to a slidable core 13 of a solenoid 5. An energizing pulse applied to winding 5 thus engages teeth 12a with teeth 6a to step a cam assembly 6 which is rotatable on a fixed shaft 3. The stepping positions are located by teeth on a spring-urged crown B co-operating with those on a fixed ring A. A cam wheel 15 has teeth 15a engaged by a wheel 16 integral with wheel 8 but differing in diameter such that wheel 15 is driven at a somewhat greater speed than sleeve 10 and wheel 12. Impulses are provided by a movable contact (17, Fig. 2, not shown) operated to engage alternative fixed contacts by a projection 15b and a notch 15c on the periphery of wheel 15, but the notch 15c is initially obturated (Fig. 2, not shown) by a vane 20 rotated with wheel 12 by the mutual engagement of teeth 20b and 12b. Thus notch 15c is uncovered (Fig. 3, not shown) only after wheel 15 has made a predetermined number of revolutions depending upon the difference in speed of wheels 12 and 15, and the extent of vane 20. Each time wheel 12 is attracted by solenoid 5 it disengages teeth 20b, 12b and a spring 21 returns the vane 20 to its initial obturating position. Thus the two fixed contacts (18, 19, Fig. 2, not shown) are periodically engaged at two different respective time intervals. A cam 6b of assembly 6 actuates a change-over contact to decide which pulsing contact (18 or 19) is connected to the solenoid 5. A third series of pulses may be provided by further contacts operated by a further notch 15<SP>1</SP>c obturated (Fig. 4, not shown) by a larger vane 20<SP>1</SP>, and a cam 6c may be used to select this time interval. In a modification (Fig. 6, not shown), to ensure that the pulse is not too short to produce a step of assembly 6, the vane 20 is allowed some axial movement to follow wheel 12 so that it does not restore the pulsing contact (17) on returning to its obturating condition.
Patent GB-726765-A (GB)
Title: Improvements in or relating to combustion apparatus
IPC: F23L5/04
Filed: 1953-11-26
Abstract: 726,765. Heating air for combustion. STEIN & ATKINSON, Ltd. Nov. 26, 1953 [Feb. 13, 1953], No. 32871/53. Class 51 (1). [Also in Group XIII] An arrangement for preheating combustion air supplied to the burner 14 of a furnace comprises an air-heating recuperator 31 heated by flue gases, air induction jet 37 which draws air through the recuperator and delivers it to the burner and a heat-exchanger 40 in which. air supplied from a compressor 41 is heated before being led to the jet 37. The recuperator 31 is of the refractory tile type disclosed in 'Specification 182,075, [Class 51 (i)], and the heat-exchanger,40 is of the type which comprises metal tubes.
Patent GB-489626-A (GB)
Title: Improvements in the sealing of electric conductors through quartz envelopes
IPC: H01J9/32
Filed: 1937-01-28
Abstract: 489,626. Sealing leading -in wires; discharge lamps. GENERAL ELECTRIC CO., Ltd., FRANCIS, V. J., HARRIS, N. L., RYDE, J. W., and SCHNETZLER, K. G. Jan. 28, 1937, No. 32934. Divided out of 489,630. [Class 36] [Also in Group XL] A plurality of metal strips are arranged within a flattened tube of quartz or like material, the strips being substantially parallel to the axis of the tube and being spaced apart in a plane parallel to the longest dimension of the cross-section of the tube, the tube is heated so that its flattened sides collapse on to the strips in a direction substantially perpenclicular to said plane, and the body so formed is joined to the sides of an aperture in an envelope of quartz or like material. Molybdenum strips 6, Fig. 3a, are welded to molybdenum wires 7, 8, the wires 7 being twisted at 9 and the wires 8 held together temporarily by a cross wire 10. The strips are then placed in a quartz tube having circular parts 11, 12 and a flattened part 13 : the parts 12, 13 are then heated so that they collapse on the cable 9 and strips 6 respectively, and the ends of the parts 11, 12 are cut off. Electrode systems comprising running electrodes 2 and starting electrodes 4, Fig. 4, are then welded to the cables 9 of two strip systems and the parts 14 inserted in tubes 15 of the envelope 1 of a high pressure mercury vapour discharge lamp, a pumping tube 16 being attached to the envelope. Inert gas is passed into the envelope, the tubes 15 collapsed on to the parts 14, and the envelope is eventually sealed off at 17. The electrodes 4 may comprise rods of alkaline earth enclosed in tungsten spirals. British Specification 476,488 and U.S.A. Specification 1,271,245 are referred to. The Provisional Specification refers also to Specification 396,103, [Group XI].
Patent GB-604849-A (GB)
Title: Improvements in the manufacture of articles from unicrystalline material
IPC: C30B29/26
Filed: 1945-12-06
Abstract: 604,849. Shaping stone. LINDE AIR PRODUCTS CO. Dec. 6, 1945, No. 32977. Convention date, Dec. 13, 1944. [Class 124] [Also in Group XXXIV] In a process for shaping a fusible, non - combustible, semi-crystalline body, such as corundum or spinel, there is directed against a portion of the body a jet of gas having sufficient heating intensity and mass velocity to melt and displace the portion. As shown, a small piece 15 of corundum or spinel is held on a rotatable support 13 and on to it is first directed an annular pre heating flame F and then a shaping flame S which forms a cavity 51 by melting and displacing part of the material and forming a lip 53 which may later be ground off. Overheating of the nozzle may be prevented by a cooling coil 21. The shape of the cavity may be altered by varying the angle at which the flame S impinges on the specimen. Various types of cavities and holes, as indicated in Figs. 3, 4, 5 and 6 (not shown), may be formed, the finished articles being used for jewel bearings. The annular preheating flame may contain excess fuel gas, and the shaping jet excess oxygen, or the excess oxygen may be supplied to the annular flame and fuel gas to the jet. Peripheral grooves or threads may be formed on rods, Figs. 10 and 11 (not shown), or longitudinal grooves may be formed on a surface, Fig. 12 (not shown).
Patent GB-489326-A (GB)
Title: Improvements in crank shafts built up from hollow metal parts
IPC: F16C3/10
Filed: 1937-11-30
Abstract: 489,326. Making crank shafts. HIRTH, H. Nov. 30, 1937, No. 32993. Convention date, Nov. 30, 1936. [Classes 83 (ii) and 83 (iv)] [Also in Group XXIV] Uniting by fusion.-Crank shafts are formed by assembling hollow sheet metal members or thin drop forgings, the hollow crank pins or shaft elements 2, 1, Fig. 1, extending through the hollow crank webs 4, 4, and being secured by welds 5, 6, 8, 9 to both walls of each web. The tubular members 1, 2 are formed by bending up and welding sheet metal strips or from drawn steel tubing. Corrugations 3 engage recesses in the webs which comprise dished members 4 secured by welds 7. A crank shaft which may be dismantled and re-assembled comprises pins 11, 12, Fig. 3, having on their end faces teeth which engage similar teeth on the portions 10 which extend through and are welded to the webs 4, 4. The parts are held in engagement by members 13 having differential screw-threads at their ends. The portions 10 may have corrugations only on their inner ends, their outer ends being of reduced diameter or of conical form, Fig. 5. In a further modification, Fig. 1, corrugations are not employed, but the teeth on the member 10 engaging those on the pin 12 are continued into the annular flange on the web 4 and the weld 5. Specification 160,751, [Class 80 (ii)], is referred to. The Specification as open to inspection under Sect. 91 states that the portions 10 may be made from solid bars. Further, the parts may be connected together by flanging the rims one upon the other over the whole or part of their periphery or by means of interengaging toothed connections or by tongue-and-slot connections, instead of by welding. The crank shafts are stated to be used for high-speed multi-cylinder light engines. This subject-matter does not appear in the Specification as accepted.
Patent GB-1164519-A (GB)
Title: Method for preparing Toluylenediisocyanates from Dinitrotoluenes
IPC: C07C209/36
Filed: 1967-07-19
Abstract: 1,164,519. Toluylene diisocyanates. INSTYTUT CHEMII OGOLNEJ. 19 July, 1967 [19 July, 1966], No. 33117/67. Heading C2C. Toluylene diisocyanates are produced from dinitrotoluenes by a method comprising reducing dinitrotoluenes in liquid phase with hydrogen at elevated temperatures and pressures in the presence of catalysts and in o-dichlorobenzene as solvent and after separating the catalyst and freeing from water by distillation, treating the reaction mixture with phosgene by known methods in the same reaction medium.