baber/WOPTO huggingface dataset:
Patent GB-1428563-A (GB)
Title: Method of and apparatus for use in measuring the particle size distribution density and/or the concentration of particles in suspension in a gaseous dispersing medium
IPC: G01N15/14
Filed: 1973-03-08
Abstract: 1428563 Atomic absorption spectrometers SARTORIUS-MEMBRANFILTER GmbH 8 March 1973 [22 March 1972] 11265/73 Heading G1A The size distribution, concentration or density of particles suspended in a gas is measured by introducing the particles singly and in succession into the evaporation zone of an atomic absorption spectrometer using a modulated light beam to enable discrimination of the absorption and emission pulses. The output of the spectrometer is either applied to a multi-channel pulse height analyzer provided with counters for each channel to derive the size distribution of the particles (the pulse amplitude being a measure of the number of atoms of the particle and hence its size) or to a pulse integrator connected to an analogue instrument to determine the concentration of the particles in the gas. If the average specific gravity of the particles is known the total weight can be calculated. As shown, Fig. 1, a hollow cathode lamp 1 and an optical system including a lens 13 having a cylindrical component produces a beam of radiation 14 having an elliptical cross section with the major axis vertical which is passed through a microflame 15 which is elongate in the direction of the axis of the radiation beam. The lamp 1 has a cathode of the same material as the sample particles to produce a emission line corresponding to the absorption line of the particles. The transmitted radiation is collimated by a cylindrical lens 17 and passed through a monochromator 23 to a photo-multiplier 25. The sample aerosol is diluted to such an extent that when introduced into the microflame the particles enter singly. Evaporation of a particle results in an increase in the absorption of the light beam which is detected. The burning sample also emits radiation and to enable the absorption and emission pulses to be separated the radiation beam is modulated at a carried frequency either by applying A.C. to the lamp or by using a rotating chopper, and detecting the signal using a phase sensitive demodulator to produce the absorption pulse. The output of the photomultiplier may also be passed through a low pass filter to extract the emission pulses. The two pulses may be amplified one inverted, and then added to produce a measuring pulse of enhanced amplitude. In a modified arrangement the radiation transmitted through the flame is reflected by a pair of mirrors so that it passes a second time through the flame in a direction perpendicular to its first passage, Fig. 4 (not shown). In another arrangement a circular cross section converging beam is projected vertically up through an elongate laminar flame to a photo-multiplier (26) protected by a heat absorbing filter (76) Fig. 5 (not shown). Instead of a microflame a laser beam or a plasma burner may be used to evaporate the particles.
Patent GB-527532-A (GB)
Title: Spinning of artificial filaments or films
IPC: D01D1/04
Filed: 1939-04-14
Abstract: 527,532. Spinning artificial filaments. DU PONT DE NEMOURS & CO., E. I. April 14, 1939, Nos. 11320 and 11321. Convention dates, April 27, 1938 and Feb. 18, 1939. [Class 2 (ii)] Filaments, ribbons, foils &c. are formed from molten polyamides and other filamentforming compounds by forcing one or more uniformly shaped solid rods composed of such materials through corresponding apertures of smaller cross-sectional dimension than the rods into a chamber containing heating surfaces adapted to melt only the inwardly projecting ends of the rods and ejecting the melted material through openings of the desired shape to form filaments &c. The exposure of the materials to a melting temperature for an extended period of time is thus avoided, uniformity of denier is secured, and contact of melted material with moving parts eliminated. Fig. 7 shows a form of apparatus suitable for continuously feeding molten filament-forming material to a spinneret. The rods 1, 1<SP>1</SP> of material are forced by screwoperated caps 4, 4<SP>1</SP> through sealing rings 3, 31 of slightly smaller diameter than the rods into contact with the walls 5, 5<SP>1</SP> of a melting chamber 2, the temperature at the walls 5, 5<SP>1</SP> being maintained somewhat above the melting point of the rods by heating coils 6. Cooling coils 13, 13<SP>1</SP> are provided to keep down the temperature of the sealing rings 3, 3<SP>1</SP>. The molten material is forced through filters 11 to the spinneret 9. In order to secure continuous action, the rods 1, 1<SP>1</SP> are forced into the chamber in succession, one or other of the valves 51, 52 being closed when necessary to permit a new rod of material to be inserted into the machine. In cases where the material of the rod requires it, a supporting cylinder may surround the rod and the screw-operated caps be replaced by plungers or pistons. Among the filament-forming materials mentioned as suitable for the process are polytetramethylene sebacamide, polyhexamethylene suberamide and sebacamide, polydecamethylene and polyhexamethylene adipamides and the polyamide from 6-amino-caproic acid ; polyethylene, polystyrene, polyacrylic acid, polyesters, polyethers, polyacetals, mixed polyester-polyamides, and cellulose derivatives such as plasticized cellulose acetate can also be spun by the method. U.S.A. Specifications 2,071,250, 2,071,253 and 2,130,948 are referred to.
Patent GB-1465032-A (GB)
Title: N,n-diethyl-dibenzo-b,e thiepin-11-6h-ylidene-1,3-propane diamine derivatives methods for their preparation and compo sitions containing them
IPC: C07D337/12
Filed: 1975-03-19
Abstract: 1465032 N,N - Diethyl N<SP>1</SP> - [dibenzo[b,e]- thiepin - 11(6H) - ylidene] - 1,3 - propanediamine derivatives F HOFFMANN-LA ROCHE & CO AG 19 March 1975 [20 March 1974] 11429/75 Heading C2C Novel compounds I and their acid addition salts in which X is S or SO 2  and R is H or Me, are prepared by (1) reacting a compound II with NH 2 -(CH 2 ) 3 -NEt 2  in the presence of a dehydrating agent (2) reacting a compound III in which Y is a leaving atom or group with HNEt 2  to form a compound I (X = S) (3) deoxygenating the corresponding N<SP>1</SP>-oxide (4) dehydrogenating the corresponding N,N-diethyl- N<SP>1</SP>[R - substituted - dibenzo[6,e]thiepin- 11- (6H)-yl]-1,3-propanediamine to form a compound I (X = S) or (5) ethylating the corresponding N-monoethyl compound; and if desired converting a compound I formed into an acid addition salt. Compounds III (Y = tosyloxy) are prepared by reacting: a Compound II with 3-amino-1- propanol and treating the imino-propanol formed with tosyl chloride, N,N-diethyl-N- [dibenzo[b,e]thiepin - 11(6H) - ylidene) - 1,3- propanediamine - N<SP>1</SP> - oxide and N<SP>1</SP> - 5,5- trioxide are prepared from the corresponding compound II (R = H) by the formation of the oxime which is reacted with Cl(CH 2 ) 3 NEt 2 . N,N - Diethyl - N<SP>1</SP> - [dibenzo[b,e]thiepin - 11(6H)- yl]-1,3-propanediamine is prepared by reducing a compound II (R = H, X = S) to the alcohol, chlorinating to give the 11-chloro compound which is reacted with 1,3-propanediamine. NEthyl - N<SP>1</SP> - [dibenzo[b,e]thiepin - 11(6H) - yl]- 1,3-propandiane and its 5-oxide are prepared from the corresponding compound II (R = H) and N-ethyl-1,3-propanediamine. Compounds I are diuretics and form with a carrier a pharmaceutical composition which may be administered orally. Reference has been directed by the Comptroller to Specification 1,334,967.
Patent GB-403275-A (GB)
Title: Improved device for taking photographs with the aid of a source of flash light
IPC: G03B15/04
Filed: 1933-04-19
Abstract: 403,275. Flashlight photography. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. April 19, 1933, No. 11483. Convention date, April 22, 1932. [Class 98 (i).] For making flashlight photographs, the shutter releasing- member of the camera is so combined with a spring-controlled electric switch for the flash-lamp that on pressing the releasing member the shutter is opened before the switch is closed to energise the lamp. The device permits combined daylight and flashlight exposures to be made. As shown, the ordinary antinous release 6 connected to the camera shutter is removably threaded into a central bore 7 of a switch, its collar 8 resting against the end of the bore. The switch comprises two insulators 1, 2 which carry opposed contact members 12, 13 connected by cables 10, 11 to the flash-lamp and its battery, and are connected by sliding pins 14, 15 encircled by springs 3 which press the insulators apart to an extent limited by a bolt of adjustable length. These springs are stronger than the spring in the release cable 6, so that, when the pressure member 9 of the antinous release is depressed, the shutter is operated first, and then the insulators are pressed together to close the contacts 12, 13 and energise the flash-lamp. Flash lamps may be used containing a reacting mixture as of carbon disulphide and nitric oxide or of oxygen aluminium or magnesium. Reference is made to a pneumatic shutter releasing-member so combined with a pneumatically-operated flash ignition member that the shutter is opened before the flash is ignited.
Patent GB-466377-A (GB)
Title: Massaging belt functioning through the effect of the weight or movements of the subject
IPC: A61H11/00
Filed: 1936-04-22
Abstract: 466,377. Massage apparatus. BOUDO, A. April 22, 1936, No. 11483. Convention date, Aug. 26, 1935. [Class 81 (ii)] A massage appliance comprises a broad belt adapted to embrace the greater part of that portion of the body to be massaged but leaving a gap, such gap being bridged by thin straps which come into direct contact with the body and pass freely through rings provided with massaging rollers, the rings being attached to the broad belt and arranged to act in the manner of pulleys in conjunction with the straps when the latter are attached to a fixed point. In Figs. 1 and 2, the belt consists of two lateral parts 1, 1a of elastic fabric, composed for example of rubber and textile threads, or of sheet rubber joined at the back by adjusting straps 2 and buckles 3. The adjusting straps may, however, consist of elastic material or springs, in which case the parts 1, 1a are of non-elastic material. Two groups 4, 4a of thin straps are provided, being respectively fixedly connected to the parts 1, la through rings 5, 5a and running freely through rings 6a, 6 also attached to the parts of the belt. A massage roller 8 is rotatably mounted in each ring. Rollers may also be mounted on other parts of the belt. In operation the ends of one group are attached to a fixed point, and the other group is held in the hand, the belt being alternately tightened and slackened by a swaying movement of the body. In Fig. 6, the straps of one group 4a are doubled back through supplementary buckles formed on the rings 5a so that the free ends of both groups can be attached to the same fixed point. The adjusting straps 2 may be replaced by a further set of thin straps 4, 4a. Specification 429,059 is referred to.
Patent GB-770087-A (GB)
Title: Improvements in or relating to ventilator windows for motor vehicles
IPC: B60J1/14
Filed: 1955-04-21
Abstract: 770,087. Vehicle windows. MILES, Ltd. H. G. and NEWMAN, A. W. A. April 21, 1955, .No. 11514/55. Class 20(3) A ventilator window pivoted about trunnions 6 in a forward side window 2 of a motor car comprises a sheet of glass 7 having a composite frame 8. of metal and rubber. The frame 8 comprises metal channels 9, 10 which are joined together and bonded to a rubber covering 11 during the curing of the rubber, e.g. by vulcanization. The margin 16 of the sheet 7 fits, and if desired. is glued, between inturned portions 14, 15, of the side flanges 12, 13 of the rubber covering 11 which has two sealing flanges 17, 18 terminating in spaced relation, one on either side of the trunnions 6. The trunnions 6 are fixed to the web of the metal frame and are received in holes in the sides 3, 5 of the window opening 2. In a modification, Fig. '4, the metal frame has a number of holes 20 so that, during moulding, rubber will extend through them, and become securely bonded to the frame. In this case one channel of the frame comprises the base and hypotanuse sides of the frame, the other side comprising a straight vertical channel.
Patent GB-740329-A (GB)
Title: Improvements in or relating to cigarettes
IPC: A24D3/04
Filed: 1954-04-22
Abstract: 740,329. Cigarettes. WILLIAMS, D. S., and WILLIAMS, J. D. April 22, 1954 [Feb. 5, 1954], No. 11590/54. Class 130. A filter tip has a transparent tubular casing 10 enclosing one filter element 13, positioned immediately adjacent the tobacco filler 17, and one or more further filter elements 12, 11, the various elements having an air space or spaces 15, 14 between them. The casing 10 may be a continuation of the cigarette paper 16.
Patent GB-796786-A (GB)
Title: Electrical converting system for supplying welding apparatus
IPC: B23K11/24
Filed: 1955-04-22
Abstract: 796,786. Converting. WELDING RESEARCH, Inc. April 22, 1955 [May 3, 1954], No. 11636/55. Class 38 (2). In a welding system of which the welding transformer 19 has three primary windings 16, 17, 18 each connected between a respective pair of the lines 11, 12, 13 of a three-phase supply system in series with a pair of reversely connected ignitions 23, 24; 28, 29; 32, 33, the provision of inductors 21, 22; 26, 27 ; 30, 31 accelerates the rate of reversal of current between oppositely directed pulses, Fig. 4, by allowing it to occur before the energy stored in the circuit inductance could be dissipated by natural losses. The inductors also limit circulating current and prevent short-circuiting of the power supply following the use of two groups of ignitions. The efficiency of alternating pulse welding is thereby increased, the weld having less time to lose heat between pulses. The inductors may be formed by centre-tapped coils wound on a common core 25. Each ignition is impulsed by the discharge of a condenser 38 through a transformer 36 when its associated thyratron 35 is fired. The grids of the thyratrons 35 are energized from pick-up coils 43, 44, 45 and 49, 50, 51 which are moved in the fields created by coils 40, 41, 42 and 46, 47, 48 energized from the three-phase supply. The movement is effected by a piston 55 moved under the control of a master control 70 which supplies a selected number of pulses of appropriate frequency and duration to control 73, which by energizing coil 66, operates valves 59, 60 against spring 67. The instants at which the ignitions are fired, and thereby the power supplied to the weld, are determined by the setting of piston stops 63, 64. Specifications 654,583 and 674,042 are referred to.
Patent GB-574392-A (GB)
Title: Improvements in or relating to electric soldering irons
IPC: B23K3/03
Filed: 1943-07-17
Abstract: 574,392. Electric soldering-irons. RIMMING- TON, F. July 17, 1943, Nos. 11643 and 13340. [Class 39 (iii)] [Also in Group XXII] An electric soldering-iron in which a pointed carbon rod 11 is arranged behind a copper bit 24, is provided with a carbon holder 3 slidable in bearings 4, 5 in a plastic moulding forming a pistol-type handle 1. The forward end of the tube 3 is tapered to receive a split collet 7, operated by a knob 8 at the rear end of the tube 3 through the medium of a tube 9 threaded over the collet, to secure the rod 11 in any desired position. A toothed rack 12 carrying collars 12a surrounding the tube 3 is engaged by a toothed segment 13 having a trigger 15 whereby the tube 3 may be moved forward through the movement of spring 17. A lighter retracting spring 18 is provided. The segment 13 may be locked by a releasable pawl 19. The bit 24, made of sheet copper, carries a rod 23 which is inserted into the socket 22 and locked by a screw 25. The bit is heated by the glowing point of the carbon 11, and it may carry side wings 26, 27 to prevent dazzle. Alternative bits, Figs. 4a, 4b may have the part 28 at other angles, or the bit may be removed and the carbon rod used for spot soldering, the work being in the circuit. Current may be supplied at low voltage from a transformer 36. In alternatives, two carbons may be employed, or a metal block may be interposed between carbon and bit. Specifications 544,011, 546,696, and U.S.A. Specification 2,112,068 are referred to. The second Provisional Specification refers also to the use of a flat-ended electrode to avoid glow, and to details of a modification in which two carbon electrodes are used.
Patent GB-660412-A (GB)
Title: A tool for locating holes in drilled structures
Inventor: VERDON-ROE GEOFFREY
IPC: B23B47/28
Filed: 1949-05-02
Abstract: 660,412. Drilling jigs. SAUNDERS-ROE (ANGLESEY), Ltd. April 28, 1950 [May 2, 1949; Nov. 22, 1949], Nos. 11647/49 and 29876/49. Class 83 (iii). A tool for locating the position of holes to be drilled and for guiding the drill comprises a pair of limbs 11 and 12, one limb 12 carrying a locating spigot 15 and the other a drill bush 16 or guide hole 26 aligned with, or capable of being aligned with, the spigot, and the limb 12 has a hole or recess 27 for receiving the point of the drill. In the form shown in Fig. 1, the limb 12 carrying a tubular spigot 15 is extended to form a handle 14 and the other limb, which' carries a hardened or lined bush 16 and is somewhat springy, is attached to it by a plate 13. To assist in locating the position of a hole 22, Fig. 3, which is masked by the plate 23 to be fitted, locating holes 17 and 18 are provided to pick up each rivet 21 of a previously completed row and a pair of nicks 24 can be aligned with a line drawn on the plate 23 to show the centreline of the holes. In the form shown in Fig. 4, a U-shaped member 25 has a spigot 115 which is split so that it resiliently engages the holes and a recess 27 is provided for the point of the drill; ina modification of this form, Fig. 6, the spigot is constituted by a screw 215 having a collar 28. In another modification, Fig. 9, a spring clip 29 is pivoted on a rivet 315 forming the locating spigot and is used as shown when working on the bottom of the plate; when working on the top of a plate, the spring clip is rotated on the rivet 315 through 180 degrees. Specification 593,221 is referred to.
Patent GB-234082-A (GB)
Title: Improvements in method of and apparatus for refining lubricating oil in a hydrocarbon motor
IPC: F16N39/00
Filed: 1925-05-05
Abstract: 234,082. Clifford, W. B. May 16, 1924, [Convention date]. Recovering waste lubricants.-The lubricating system of a motor is provided with a by-pass containing a purifier heated by the exhaust and closed and opened automatically to the admission of oil as the temperature falls below or rises above a predetermined point'. In the device shown, a portion of the. oil is pumped through a by-pass 16 to a vaporizer 42 heated by passage of gases from the exhaust 32 through a jacket 30, admission of gas .being controlled by the size of the opening 36 in an exchangeable washer 38. The vaporizer is closed by a removable cap 52 from which rods 74 support a thermostatic regulator 70 comprising a corrugated copper shell filled with lubricating oil similar to that in which it is immersed. As the temperature rises the regulator 70 expands and a rod 82 contacts with and forces up a ball 60 against the pressure of the oil and a spring 64, so opening the pipe 68 t'o the oil. The pipe 68 is threaded to a sleeve 50 which is screwed into the cap 52 whereby it may be adjusted to raise or lower the valve 60, 62 and so regulate the temperature at which the valve is opened by the rod 82. The treated oil flows over a dam 90 to a pipe 92 connected with the lubricating system. The vaporized impurities such as water and gasolene escape to the atmosphere, a condenser, or the carburetter. The vaporizer 42 should be maintained at a temperature slightly below the flash point of the oil. A range of 270-300‹ F. rising in special cases to a maximum of 400‹ F. is suitable.
Patent GB-333594-A (GB)
Title: Improvements in or relating to trailer vehicles
IPC: B60T7/20
Filed: 1929-04-16
Abstract: 333,594. Morris, E. H. April 16, 1929. Applied by backward pressure of tractor or relaxation of pull.-Towing and brake operating connections between a tractor and a trailer vehicle, whereby the trailer brakes are automatically applied when the tractor is retarded comprise a link 3 pivoted at 2 on a tractor member 1 and slidable in a yoke 7 on the trailer. The link is connected to a brake member 14. The towing stress is transmitted by the engagement of surfaces 13, 16 on the link and yoke. The rearward movement of the link during braking of the trailer is limited, as shown, by the engagement of the end of a slot in the link with a bolt 11 which is adjustably secured in a slot in the yoke by serrated plates 9 to permit of adjustment of the braking operation. A stand 15 to support the yoke 7 when the trailer is disconnected from the tractor is hinged to the link 3.
Patent GB-610790-A (GB)
Title: Improvements in telephone systems
IPC: H04M19/02
Filed: 1946-04-16
Abstract: 610,790. Exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. April 16, 1946, No. 11724. Convention date, April 19, 1945. [Class 40 (iv)] Signals are transmitted over a telephone line by the application thereto of alternating current by either of two relays which connect the line wires to the terminals of the source in opposite senses so that the initial current goes to line in one direction or the other. The receiver comprises an arrangement of relays and rectifiers arranged to respond differently to these two initial current directions and thereafter to remain operated, in the position taken up in response to the initial current, for the duration of the A.C. signal. As shown in Fig. 1, the transmitter comprises three relays of which R3 generates the A.C. and R1 or R2 connects the source to the line La, Lb. Operation of R1 or R2 completes a D.C. circuit through the primary of T and connects the secondary to the line wires in one of the two senses. Simultaneously, R3 operates, changes the current direction in T and interrupts its operating circuit, whereupon it continues to reverse the current in T as long as R1 or R2 is operated. The receiver shown in Fig. 4 comprises a double-winding polarized relay. A current impulse from La to Lb energizes the lower winding and results in the actuation of the lower spring-sets so that the lower winding remains energized independent of the subsequent reversals of current in the line, contact 106 repeating the signal. Similarly, an initial impulse in the opposite direction energizes the upper winding, contact 101 repeating the signal. In a modified receiver, Fig. 5 (not shown), two normal relays replace the polarized relay, while in a modified transmitter a separate A.C. source is employed after R3 has transmitted the initial signal.