baber/WOPTO huggingface dataset:
Patent GB-1072357-A (GB)
Title: Improvements in or relating to gas lasers
IPC: H01S3/0975
Filed: 1964-07-07
Abstract: 1,072,357. Lasers. SPECTRA-PHYSICS Inc. July 7, 1964 [May 25, 1964], No. 27921/64. Heading H1C. In a gas laser stimulated emission is produced as a result of electronic transitions of gaseous ions from an excited state to a lower state. An active medium of mercury vapour is inserted in an elongated glass tube, placed inside an optical resonator, with an inert gas carrier such as helium. Current pulses at a regular repetition rate are applied to the electrodes of the discharge tube to ionize the mercury by direct impact between neutral atoms and electrons in the discharge and populate the upper level of the laser transition. Fig. 2 (not shown). Since the energy levels of the ions are more spread out than those of neutral atoms a higher percentage of the total population of excited states can undergo the large energy difference quantum transitions which yield the short visible wavelengths. Since the wavelength of the output depends upon the width of the discharge pulses two tubes each energized by a different pulse may be arranged in tandem to obtain two wavelengths, Fig. 3 (not shown). An R.F. driven coil may be wound around the tube as an additional or alternative discharge-producing means. Reduction in input power requirements can be achieved by use of a hollow cathode discharge, Fig. 4 (not shown), a plurality of openings (15) being made in a cylindrical cathode sleeve (14) inserted in the laser envelope and anode pins (16) placed adjacent their openings. If cadmium or zinc ions are to be used the cathode sleeve is plated and the ions generated by sputtering of the cathode surface. In the embodiment of Fig. 6 the cathode 14 is formed from a block of graphite provided with transverse slots and two planar anodes 20 arranged one on each side of the block such that some of the broadening of the laser emission line due to field-induced ion motion along the optical axis is suppressed. In the arrangement of Fig. 7 (not shown) two glass tubes, disposed along the optical axis, interconnect an enlarged central region containing the cathode and enlarged end regions containing anodes which serve to drive ions into the optical axis region. Fig. 8 (not shown) shows an arrangement for generating high current densities in which the gaseous medium is formed into a toroidal configuration and includes a transformer which utilizes the medium as a secondary winding. A tetrode arrangement using electron gun excitation may be used, Fig. 9 (not shown), in which arrangement the carrier gas is omitted. A grid (27) controls the energy of the electrons from a cathode (26) and a grid (28) biased positively with respect to (27) collects the soft electrons resulting from ionization. The active medium may be Argon.
Patent GB-1078874-A (GB)
Title: Therapeutic compositions
IPC: A61K33/14
Filed: 1966-06-22
Abstract: A therapeutic composition comprising KHCO3, KCl and citric or tartaric acid mixed together, which are capable of effervescing when the composition is dissolved in water thereby forming a palatable solution for oral administration which is effective in potassium replacement therapy.  The compositions may be prepared in powder or tablet form suitable for dissolution in water and preferably comprise by weight percent 38-67% KHCO3, 25-56% KCl and 5-19% citric acid. The compositions may also contain conventional filters, sweetening agents, artificial colouring agents and additional flavour masking agents.
Patent GB-630690-A (GB)
Title: Voltage responsive trip circuit
IPC: G01R17/04
Filed: 1946-09-18
Abstract: 630,690. Automatic control systems for humidity. BENDIX AVIATION CORPORATION. Sept. 18, 1946, No. 28063. Convention date, Oct. 4, 1945. Drawings to Specification. [Class 38 (iv)] [Also in Groups XXXVI and XXXVIII] Humidity control. Apparatus responsive to the magnitude of an electric potential under test comprises means for varying the value of a sweep potential cyclically and successively in a first sense at a first rate and in a second sense at a second rate, a controlled device responsive to the potential under test, means for actuating said controlled device when the sweep potential bears a predetermined ratio to the potential under test and means for disabling the actuating means during that part of the cycle in which the sweep potential is varying in said second sense. The subject-matter is the same as that of Specification 627,030.
Patent GB-687221-A (GB)
Title: Improvements in bogies
IPC: B61F5/08
Filed: 1950-11-16
Abstract: 687,221. Rail vehicle bogies. HEDIN, E. Nov. 16, 1950 [Nov. 21, 1949], No. 28072/50. Class 103 (vi). An axle-truck has a frame 1 carrying transverse springs 3 to support a bolster 2 in an opening in the frame. The bolster 2 is provided with resilient buffers 6, 7 which engage inner plates on the sides of the frame opening to prevent metallic contact and consequent transmission of noise and vibrations during running. The buffers 6, 7 are arranged to be in compression when the bolster 2 and frame 1 are assembled. Specification 664,466 is referred to.
Patent GB-1277091-A (GB)
Title: Ionization type smoke detectors
IPC: G01N27/66
Filed: 1969-06-03
Abstract: 1277091 Smoke detectors NITTAN CO Ltd 3 June 1969 [11 July 1968] 28085/69 Heading G1N [Also in Division H1] In an ionization smoke detector for a fire alarm system removal of a wire mesh electrode 4, Fig. 2, short circuits the gate G of the FET to its source S. The mesh 4 forms part of a screw cap 21, and during removal for cleaning the short circuit protects the FET against static electricity. The FET source S is connected to the detector housing 20 and to a resilient piece 22 whilst its gate is connected to the plate 2 of closed ionization chamber 3. A rod 23 integral with the screw cap 21 retains the resilient piece as shown in Fig. 2 until removal of the cap, whereon the piece 22 contacts a screw 25 on chamber 3 to connect the gate and source together. The rod 23 may be used to electrically connect the cap 21 to the source if the housing 20 is not used. Rod 23 may alternatively be integral with the resilient piece 22, Fig. 4, or may be a cylinder concentric with housing 20 (not shown). A uni-junction transistor may be used and similarly protected.
Patent GB-501939-A (GB)
Title: Improvements in or relating to the air-cooling of cylinders of internal combustion engines
IPC: F01P1/02
Filed: 1937-10-15
Abstract: 501,939. Cooling cylinders. GABRIELSON, J. B. Oct. 15, 1937, No. 28165. Convention date, Oct. 15, 1936. [Class 7 (ii)] In a multi-cylinder air-cooled engine, the cylinder heads and barrels are cooled, respectively, by air currents supplied by conduits 21, 31, the air from the conduit 31 flowing over the barrels before it reaches the exhaust passages 5, which are also cooled by air flowing from the conduit 21. Baffles 33 may be provided between adjacent exhaust passages to deflect the air which leaves by ports 18; 19, 32 extending along the engine, and by circular ports 40 at the two ends. Further air may be supplied to cool the heads by a conduit 28, baffles 27, 36 being arranged to deflect the air on to ribs 14. The conduits 21, 28, 31, which taper, are supplied by a fly-wheel fan 42.
Patent GB-207798-A (GB)
Title: Improvements in synchronizing systems
IPC: G10F5/02
Filed: 1923-11-08
Abstract: 207,798. Soc. Anon. Pleyel. Nov. 29, 1922, [Convention date]. Synchronizing phonographs with other appara- - tus.-In a method of synchronizing separate apparatus, the master apparatus produces periodically, either regularly or with known irregularity, effects diagrammatically indicated at G, Fig. 4, while each apparatus to be synchronized therewith produces two effects R, A, one or other of which effects overlaps G when, and only when, the second apparatus is fast or slow, this overlap being utilized to put into operation means correcting the speed of the second apparatus. In Fig. 5, the master apparatus controls a duct 2 by means of special perforations in a tune sheet, the diaphragm 4 raising a valve 3 periodically to connect a tube 5 to suction in the chest 1. The second apparatus, also by a perforated tune sheet, controls two ducts 8, 9 similarly operating valves 6, 7 but only permitting the suction at 1 to reach one side of the double bellows 12 when tune-sheet perforations in the two apparatus are in operation together. The movable leaves of the double-bellows are connected by an adjustable link 14 to the speed regulator 17 of the second apparatus. If observation of a pointer 15 shows that the automatic corrections take a systematic course, the initial speed of the second apparatus may be adjusted. The invention mav be carried out by mechanical or electric means : for instance, cams rotated proportionately to the speeds of the two apparatus may make and break circuits operating electromagnets controlling the openings of the ducts 2, 8, 9; or the cams may control the ducts 2, 8, 9 directly. The system is applicable to automatic or mechanical apparatus, such as automatic musical instruments, kinematographs, or phonographs. The Specification as open to inspection under Sect. 91 (3) (a) states that the system is also applicable to receivers or senders of any kind of waves; and that the method used in automatic Morse may be employed. This subject-matter does not appear in the Specification as accepted.
Patent GB-456856-A (GB)
Title: Improvements in starting devices for internal combustion engines
IPC: F02N99/00
Filed: 1935-10-12
Abstract: 456,856. Turning-gear. BOSCH AKT.- GES., R., 4, Militarstrasse, Stuttgart, Germany. Oct. 12, 1935, No. 28198. Convention date, Nov. 19, 1934. [Class 7 (v)] An engine starter is of the type in which a pinion d or other driven member movable into engagement with an engine member e is connected to a flywheel f or other driving member through a friction-disc clutch i which is brought into operation by an axially screwing nut m after the engagement of the members d, e and when the action of springs u on the nut m has been overcome. Each spring u is housed in the nut m and is adapted to move the nut away from the pressure plate o of the clutch, while a fixed stop y annuls the action of the springs on the member m when the pinion d is fully in mesh with the engine member e. As shown, the cup h of the disc clutch is driven from the starter fly-wheel f through planetary gearing g, and the stop y is an annular plate mounted on the cup h. The pinion d is formed on a sleeve a movable axially by means of a lever z. The discs of the clutch i are in engagement alternately with the cup h and with the nut m, which is threaded on the sleeve a and carries the pressure plate o bearing against a collar p. The springs u are interposed between bolts s, t arranged in bores r in the nut m, the bolts s normally bearing against the plate o and the bolts t each having a pin v extending through an opening in the end of the bore r. In operation, the fly-wheel f is set in rotation manually or by an electric motor. On moving the pinion d into mesh with the engine member e, the plate o comes into engagement with the disc clutch i and moves this and the nut m axially until the pins v engage the stop and the springs u are compressed. The clutch then transmits rotation from the fly-wheel f to the pinion d and is automatically tightened by the nut m until the engine starts and overruns the starter, whereupon the nut releases the disc clutch and the parts are returned to normal position.
Patent GB-975537-A (GB)
Title: Cooking apparatus
IPC: F24C15/08
Filed: 1962-07-23
Abstract: 975,537. Oven stoves. RADIANT ELECTRONIC PRODUCTS CORPORATION. July 23, 1962 [July 31, 1961], No. 28289/62. Heading F4W. [Also in Division H5] Cooking apparatus comprises two ovens 22 within and spaced from an outer cabinet 21, so that air may circulate around them and discharge from the flue 33, said ovens being heated by radiant panels of fused silica 45. These panels are heated by resistance coils 47, Fig. 11, in a grooved asbestos backing 46, which, in turn, is backed by a sheet of metal foils 48, e.g. aluminium, insulating material 49, e.g. fibre glass or wool, a stucco aluminium plate 50 and a metal casing 51, in that order. The front of the apparatus has controls 62 and 65 and two drop-down, insulated oven doors which actuate micro-switches 30 by means of cam plates and, as shown at Fig. 12, the microswitches and timer switches 62 are wired so that, after setting the timer and closing the oven doors, the predetermined time will elapse and a buzzer will sound. The heater coils 47 are energized by switch 65 and a neon light 66 indicates this state. The heating elements may be at the top and bottom of the oven as indicated at Fig. 4, or at the bottom only.
Patent GB-1079510-A (GB)
Title: Apparatus for starting and controlling the rate of revolution of asynchronous motors
Inventor: VELCAN GRIGORE
IPC: H02K17/30
Filed: 1966-06-24
Abstract: 1,079,510. Transformers. RUMANIAN MINISTER OF PETROLEUM. June 24, 1966, No. 28496/66. Heading H1T. [Also in Division H2] The wound rotor of a polyphase induction motor is connected for starting and speed control to a transformer, the secondary winding of which comprises a few short-circuited turns of tubular conductor through which flows cooling water. The primary may have tappings, or be connected in series with low value resistors, or two transformers may be used connectible in series or parallel. The waste heat may be used, e.g. for heating a building.
Patent GB-250488-A (GB)
Title: Improvements in pen nibs
IPC: B43K1/01
Filed: 1925-11-12
Abstract: 250,488. Rauh, K. Nov. 12, 1925. Reservoir nibs.- A pen nib is provided with a stamped-out tongue b lying in the cavity thereof and forming a reservoir for ink, the tongue being connected to the nib at the shaft end and being so arranged that the reservoir tapers away from the point. The tongue is unconnected to the body of the nib except at the shaft end, and at its free end may be bent inwards slightly to facilitate the retention of the ink.
Patent GB-257781-A (GB)
Title: Improvements in electrical water heaters
IPC: F24H1/10
Filed: 1925-11-12
Abstract: 257,781. Marks, E. C. R., (Walker (nÚe Honey, G. H.). Nov. 12, 1925. Heating by electricity. -In an electric water heater of the type comprising a chamber through which the water flows freely and having a removable cover carrying the heating-elements; the cover also carries a switch and rheostat. The chamber 1 is of tubular form with inlet 8 below the outlet 16 above. The cover consists of a screw at ring 12 into which is screwed an insulating plug 20, through which pass leads connected to three metal bars 25, 26, 27 connected at their lower ends by a bar 24 and forming the heating-element. The ring 12 has a wide upstanding flange 17 to which is attached a bracket 35 carrying a casing 36 containing a switch and rheostat connected to the heating- elements.
Patent GB-855840-A (GB)
Title: Improvements in or relating to alternating current generators
IPC: H02K19/24
Filed: 1958-09-05
Abstract: 855,840. Inductor alternators. GENERAL MOTORS CORPORATION. Sept. 5, 1958 [Sept. 11, 1957], No. 28559/58. Addition to 855,551. Class 35. In an inductor alternator having a stationary field member 30 and stator core 22 in the annular air-gap between which an interdigitatedpole inductor 58 rotates as described in the parent Specification, the field winding 32 and stator winding are cooled by air ventilation through apertures in the end wall 28 or by circulated oil. As shown in Fig. 7, the field member consists of coils 32 mounted on the core 30 haying two cylindrical pole parts 36, 38, while the inductor rotor consists of interdigitated magnetic members 60, 62 secured as by brazing to a spacer 64 e.g. of aluminium and serving to carry the generated flux to the stator 22. In the oil-cooled form shown in Fig. 7, oil from a sump 132 is pumped via ducts 120, 122, 124 into the machine casing to cool both windings, whence it is withdrawn at 125, 128 via a cooler 134 to the sump. In a modified construction, Fig. 8, the rotor magnetic members 90, 92 and spacer 94 form part of an engine flywheel. This form may be air-cooled, but as shown is cooled by oil pumped from sump 152 and returned via cooler 151. It is stated that alternators gear-driven by an engine may be cooled by engine oil. The exciting winding may comprise a shunt coil connected across the alternator through a rectifier, and a regulating coil fed through a current or voltage responsive regulator.
Patent GB-394855-A (GB)
Title: Improvements in tufting apparatus
IPC: D05C15/00
Filed: 1932-10-13
Abstract: 394,855. Tufting-tools. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Van Dyke Textigraph Corporation ; Chattanooga, Tennessee, U.S.A.) Oct. 13, 1932, No. 28614. [Class 112.] A tufting - appliance comprises a hollow needle 1 which is reciprocated within a presser foot 3 by a double screw-threaded member 11 rotated bv means of a motordriven flexible shaft 20. The thread passes through a guide 24 and an aperture 23 in the needle. The point of the needle and the presser foot are inclined rearwardly and the appliance advances automatically along the fabric as the needle reciprocates and the presser foot engages the last inserted loop. The presser foot 3x, Fig. 14, may be coneshaped and the needle may be mounted to turn with respect to the presser foot. Two needles arranged to reciprocate alternately may be mounted in the presser foot. The needle may be mounted eccentrically in a rotatable head 26, Fig. 9.
Patent GB-732995-A (GB)
Title: Improvements in or relating to dynamic capacitor modulator and electrometer using the same
IPC: H03F3/40
Filed: 1952-11-13
Abstract: 732,995. Dynamic capacitor electrometer. BECKMAN INSTRUMENTS, Inc. Nov. 13, 1952 [March 24, 1952], No. 28623/52. Class 37. A dynamic capacitor comprising two parallel ferromagnetic plates assembled in a sealed glass tube is used to measure a small D.C. voltage by surrounding the plates with an A.C. energized coil so that the plates vibrate at twice the supply frequency to convert the small D.C. voltage applied to the plates to an A.C. voltage of proportionate amplitude which is amplified and demodulated to give a measured D.C. output. Dynamic capacitor construction (Fig. 1).-Two flat, flexible ferromagnetic plates 15 having sand-blasted surfaces are mounted on rigid leads 12 and sealed into a glass envelope 10, preferably filled with a small quantity of hydrogen, or evacuated. The exterior of the envelope is coated with a conductive film to provide an electrostatic shield. A coil 20 surrounds the plates 15 outside the envelope 10, and when the coil is A.C. energized the plates vibrate at twice the frequency of the A.C. supply, due to their mutual repulsion twice per cycle. Electrometer (Fig. 6). The D.C. signal is fed via terminals 40, 41 through a three-stage R.C. filter which rejects any supply frequency signals the dynamic capacitor 53 forming the condenser of the third R.C. stage, to an A.C. amplifier comprising valves 50, 60, 61, so that a proportionate A.C. current of twice the supply frequency appears in the amplifier output transformer 88. This output is demodulated in a ring modulator 104 with a signal of the same frequency derived from a secondary winding 105 of the H.T. smoothing choke 99, and the resulting D.C. signal is fed back via meter 112 and resistors 115, 116 to oppose the input signal, so that the meter indicates the magnitude of the input D.C. signal. Resistor 115 is adjustable manually, or automatically in accordance with temperature. Zero adjustment of the apparatus is obtained by varying the bias on the first valve 50 by potentiometer 118.
Patent GB-261405-A (GB)
Title: Improvements in or relating to systems of electric braking
IPC: B60L7/00
Filed: 1926-11-13
Abstract: 261,405. International General Electric Co., Inc., (Assignees of Allgemeine Elcktricitõts Ges.). Nov. 14, 1925, [Convention date]. Drawings to Specification. Electric braking. - In electrically braking direct-current series motors for traction or other purposes by short-circuiting the motor armature through a braking resistance, the whole of the resistance, is transiently short-circuited and restored one or more times during the passage of the braking controller through its successive stages 67 by means of one or more additional segments between the controller notches. The Specification as open to inspection under Sect. 91 (3) (a) contains the following additional matter. A separate electromagnetic switch responsive to the braking current may insert the full resistance and may be arranged to be thrown out of action when not required. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1533075-A (GB)
Title: Dry-shaving apparatus with endless-band cutter
IPC: B26B19/00
Filed: 1977-07-08
Abstract: 1533075 Dry-shavers PHILIPS' GLOEILAMPENFABRIEKEN NV 8 July 1977 [12 July 1976] 28745/77 Heading B4B A dry shaver comprises an endless band movable cutter 7 disposed between an outer stationary cutter 12 and an inner stationary member 13, preferably also a cutter, with aligned hair entry apertures 20 and 15A. The apertures in the inner cutter are formed by the spaces between teeth 15 which may have protrusions 21 to space the cutter 13 from the cutter 12 sufficiently to accommodate the band cutter. The cutter 7 passes round rollers 10 and 11 spring urged apart, a drive wheel 22 driven by a battery powered motor 4. The cutter 13 is urged towards the cutter 12 by springs 18.
Patent GB-1317964-A (GB)
Title: Process for converting an olefin to a product containing higher and lower olefins and a catalyst therefor
IPC: B01J23/89
Filed: 1970-08-12
Abstract: 1317964 Catalyst composition GULF RESEARCH & DEVELOPMENT CO 12 Aug 1970 [25 Aug 1969] 38804/70 Heading B1E [Also in Division C5] A catalyst composition comprises solely alumina, cobalt (1-4 wt% based on the total catalyst) molybdenum (4-12 wt%) and silver or copper (0.1-6 wt%) the metals optionally being in the form of oxides. The catalyst is formed by grinding together oxides of the above components or by impregnating the alumina with solutions of compounds of the other metal components, drying and then calcining, e.g. at 400-600‹C.