baber/WOPTO huggingface dataset:
Patent GB-910740-A (GB)
Title: Dictation transcribing machine
IPC: G11B5/004
Filed: 1959-04-15
Abstract: 910,740. Dictating machines; back-spacing. DICTAPHONE CORPORATION. April 15, 1959 [April 15, 1958], No. 12847/59. Class 40 (2). In a back-spacing mechanism for a dictation machine employing a wide endless record belt, two clutches associated with rotatable gears on the transducer carriage feed screw, by the operation of a solenoid, change the drive from slow forward to fast reverse while still maintaining normal forward drive of the record belt, and at the same time cause disengagement of the transducer from the record surface. The record belt is carried by rollers 32, 36, the former being driven via a belt 42 from the step 46 of a friction gear 50 driven from a motor 56 via friction pulley 60 brought into and out of operation instantly by a solenoid 68. The feed screw 40 is driven by the shaft 45 of roller 32 via a train of gears 76, 78, 82, 84 and 88, the gear 88 being free on the feed screw 40 but coupled thereto during a forward operation by a wheel 106 which presses a clutch spring on gear 88 into engagement with a hub 104 pinned to feed screw 40. The wheel 106 is mounted on a twoarmed lever 108 pivoted at 110 and carrying another wheel 112 for engagement with a further clutch spring 120 on a gear 122 when a reversing operation on the feed screw 40 is effected. Gear 122 is driven from gear 88 via a train 92, 96, 138 and a friction clutch 124, but is stationary during forward operation because the clutch 124 is rendered inoperative by a solenoid-operated plunger 132 which normally rests in a groove in the clutch housing 130. A reversing operation is effected by energizing a solenoid 134 so that the plunger 132 is withdrawn and clutch housing 130 becomes free to rotate and to establish rotation of shaft 98, the gear 138 thereon, and the gear 122. Shaft 98 also carries a double cam element 140 secured to gear 138 which rotates clockwise, as viewed in Fig. 6, and establishes during the major part of each half revolution the engagement of wheel 112 with clutch spring 120 on gear 122, through the medium of a follower pin 146 on the two-armed lever 108 carrying the wheels 106, 112. The shaft 98 carries a member 98, Figs. 6 and 7, having grooves 152 in one or other of which a pin 154 engages during forward drive. The pin 154 is carried on one end of a lever 156 which tilts the transducer 21 out of contact with the record belt every time the pin 154 leaves one of grooves 152. Specification 910,739 is referred to.
Patent GB-1597077-A (GB)
Title: Tube for irradiation equipment
IPC: G21K1/02
Filed: 1978-04-03
Abstract: Irradiation devices contain in the region of the emerging radiation a device which limits the cross-section of said radiation. As a matter of simplicity, said device is constructed as a tube, whereas it was previously necessary to provide a set of tubes of different cross-sections when the device was provided for the purpose of irradiating surfaces having different cross-sections. The novel tube contains four backing plates (32, 33, 34, 35) which bound the exit opening (47) of the device and can be displaced symmetrically relative to the centre of said opening. Mounted on each backing plate is a vertical side wall (53, 54, 55, 56) in the lateral extension of which there are arranged lamellae (65, 66, 67, 68) which can be erected parallel to the side wall or can be folded back onto the backing plate. It is possible in this way to vary the cross-section of the tube over a wide range by displacing the backing plates and erecting the lamellae required for the purpose of forming a closed tube. <IMAGE>
Patent GB-167577-A (GB)
Title: Improvements in positive electrodes of electric accumulators
IPC: H01M4/72
Filed: 1920-05-10
Abstract: 167,577. Pouchain, A. May 10, 1920. Electrodes.-A grid for a storage battery is provided with perforations 3 at some or all of the intersections of the bars to allow the electrolyte to pass from one side of the grid to the other. The bars may be of greater thickness at the perforated intersections which accordingly project above the rest of the grid and form flanges when the grid is compressed thus preventing the paste from passing into the perforations.
Patent GB-181214-A (GB)
Title: Improvements in or relating to brush-filling machines
IPC: A46D3/04
Filed: 1921-05-06
Abstract: 181,214. Shipley, A. H., and Berry, A. B. May 6, 1921. Brush-making machines. - In a brush-fitting machine, the rest supporting the brush stock against the thrust of the inserting-tool is capable of universal movement about the centre of the work-engaging face. As shown in Fig. 2, the rest comprises an hemispherical member 4 movable within a socket 8 in the sleeve shaft 5 and yieldingly held by a spring 9. The front of the rest is recessed to receive a leather pad 13. The rest may be locked in adjusted position by means as shown in Fig. 3, comprising a bolt 15 rotatably connected to the rest 7a, the head of the bolt having a transverse hole 25 to receive a shaft 22 with an eccentric 23. On rotating the handle 24, the bolt may be moved longitudinally in the housing 20 to tighten the rest against the socket 8<a>. During release, a compression spring 26 acts to free the rest from engagement with its socket. As shown in Fig. 5, the locking-bolt 27 actuated by an eccentric 28 on a transverse shaft 29 has a conical end 31 provided with a slipper block 31a situated in an undercut groove extending around the back of the rest 4<b>. In addition the rest is rotatable in its socket 8<b> so that any desired inclination of the work-engaging face may be obtained. According to the Provisional Specification, instead of a hemispherical member movable within a socket, a gimbal arrangement may be employed.
Patent GB-1340430-A (GB)
Title: Method and apparatus for determining the i-v curve of a solar array
IPC: H02S50/10
Filed: 1971-05-04
Abstract: 1340430 Calibrating a solar array TRW Inc 4 May 1971 [4 May 1970] 12994/71 Heading G1A The characteristic I-V curve of a solar array 12 is determined by irradiating the array using a pulsed flash-lamp 20 and comparing the array output with that of a standard photo-cell 66. The lamp 20, preferably a xenon flash-lamp, is pulsed with an extremely high density current such that during each flash the lamp intensity is maintained constant at a peak value for a fixed period of time. After each flash a stepping device 52 changes the operating conditions of the solar array so that its output current may be monitored at open circuit, closed circuit, and a number of different voltage levels. For each position of the stepping device 52 a timing signal generator 28 provides control pulses for the following series of events a) Lamp 20 is pulsed b) Gated integrators 62 & 64 are gated ON, and then OFF so as to store the photo-current induced in the array 12 and standard cell 66 during the peak value of the flash c) Read-out sequencer 76 is operated to print out sequentially at 70, via a digital volt-meter 68, the standard photo-cell current, the array current and the array condition. d) Stepping device 52 is stepped on one position to provide the next array condition. e) Relays 74 of the integrators 62, 64 are actuated to clear these integrators. f) Lamp 20 is pulsed again.
Patent GB-391977-A (GB)
Title: High frequency electrical oscillators
IPC: H03B5/34
Filed: 1932-05-06
Abstract: 391,977. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Goddard, De W. R. ; Riverhead, Long Island, New York, U.S.A. May 6, 1932, No. 13136. Convention date, June 4,1931. [Class 40 (v).] A high-frequency oscillator comprises a multi-grid valve and a piezo-electric crystal connected between one of the grids and another electrode of the valve, the crystal forming part of a reactionless circuit having no resonant frequency. Fig. 1 shows a tetrode oscillator 8 having a piezo-electric crystal 2 connected between the control grid and cathode, the resistance 10 providing grid bias. The screengrid derived its potential from potentiometer 24 and its circuit includes the tuned circuit 22. In pentode oscillators, the crystal is connected between control grid and anode, control grid and screen grid, or control grid and cathode, Figs. 2, 3, and 4 (not shown). The Specification as open to inspection under Sect. 91 describes a tetrode oscillator in which a tuned circuit is connected between control grid and cathode, the crystal being included in the screen-grid circuit and shunted by a high-frequency choke. In Fig. 3 (Cancelled) the crystal is connected between the screen and control grids, resistances 5, 52, 56 being employed for grid bias, screen grid potential, and output coupling respectively. This sub. ject-matter does not appear in the Specification as accepted.
Patent GB-274403-A (GB)
Title: Improvements in bicycle stands
IPC: B62H1/00
Filed: 1927-05-17
Abstract: 274,403. Cohn, S. May 17, 1927. Supports.-A bicycle stand consists of a bar, or a number of bars interconnected by locking joints, attached to the cycle frame by a double pivotal joint and provided with a spring clip, which holds the stand, when out of use, folded against the frame, and receives the front or rear wheel when the stand is in use. As shown in Figs, 2 and 3, a clip 12 adapted to engage the front wheel 18 or the rear wheel 16 is mounted on a bar 1 connected by a spring joint 3 to a bar 2, which is pivoted to a member 2a rotatably mounted on a vertical pin 8 carried by a bracket 4 bolted to the frame members 6. The clip 12 is adjustable along a longitudinal slot in the bar 1 by means of a bolt 11, on which is rotatably mounted a base bar 13 adapted to engage the ground. The stand is collapsed by folding the bars 1, 2 together about the joint 3, turning the base bar 13 parallel to the bars 1, 2, and pivoting the stand upwards so that the clip 12 engages the frame tube 14. The stand may be locked in the position of use by a chain, lock, &c., passed through holes in the limbs of the spring clip 12. In a modification, the base bar 13 consists of two pivoted parts, which, on displacement, of the stand into the operative or inoperative position, are automatically brought into the transverse or the parallel position by means of a crank and link mechanism.
Patent GB-132652-A (GB)
IPC: B28C5/16
Abstract: 132,652. Lea, T. Oct. 16, 1918. Moving container apparatus; rotary stirrers.-Relates to concrete and like mixers. A stationary or revolving pan A is fitted with one or more stationary or revolving arms 1, 2, 3, each having affixed to it one or more vanes 14. The arms are made of angle section and are cast to a boss 4 on a spindle 5 revolving in a foot-step. Rollers 8 on the arms run on the top 9 of the pan. The arms are stayed by cross-stays 10 and are driven by bevel-gearing from a shaft 11. The vertical vanes 14 are slit to provide base connecting flanges 16, and their lower edges are bent as shown in Fig. 3 and scrape the bottom of the pan. The material is fed from a hopper near the centre, and the vanes turn the material and gradually move it towards the periphery, where it escapes through an outlet 20. Water sprays may be fixed in a convenient position as required. The feed may be at the periphery and the outlet at the centre, in which case the set of the vanes is reversed.
Patent GB-1299404-A (GB)
Title: Improved method of manufacturing a liquid conductivity cell
Inventor: GROS NORMAN WILLIAM ALBERT LE
IPC: G01N27/07
Filed: 1970-03-19
Abstract: 1299404 Moulding liquid conductivity cells LTH ELECTRONICS Ltd 19 April 1971 [19 March 1970] 13432/70 Heading B5A A liquid electrolytic conductivity measuring cell comprising resin-impregnated carbon-electrodes 6 (Fig. 2) embedded in plastics material, is made by supporting the electrodes 6 on a mandrel 2, 3 or inside a mould, expanding portions 3 of the mandrel or mould to grip the electrodes 6 and hold them in place, and surrounding them with the plastics material. In a first embodiment (Fig. 1) terminals are soldered to circlips encircling the carbon ring electrodes 6, which are then slid on to a mandrel comprising alternate sections of P.T.F.E.-coated stainless steel 2 and P.T.F.E. 3, and the electrodes are positioned on the P.T.F.E. sections by distance pieces (not shown). Nuts 4 are tightened on threads 5 formed at the ends of a supporting rod 1, to compress the P.T.F.E. sections 3 until they grip the carbon ring electrodes 6 (see Fig. 2). The distance pieces are removed, and the arrangement placed in a mould which is filled with plastics material; a screw thread may be moulded on the end of the cell. After moulding, the nuts 4 are loosened to release the electrodes 6 from the grip of the P.T.F.E. rings 3, and the liquid conductivity cell slid from the mandrel; the cell has an accurately dimensioned bore. The supporting rod 1 may be replaced by a solid core (11) (see Fig. 3, not reproduced). In an alternative embodiment in which the finished cell has an accurately dimensioned external surface, the steel and P.T.F.E. sections are positioned within a cylindrical support, the electrodes placed inside the sections, and plastics injected through apertures formed in the electrodes.
Patent GB-1519704-A (GB)
Title: Method and means for measuring substance volumes in light-trasnmitting samples
IPC: G01B11/02
Filed: 1976-04-02
Abstract: 1519704 Image analysis CARL ZEISSSTIFTUNG [trading as CARL ZEISS] 2 April 1976 [9 April 1975] 13552/76 Heading G1A To determine the amount of a substance in a sample by image analysis, the sample is raster scanned; during the first frame of the scan the resulting video signal is thresholded to locate all areas of the sample having more than a first level of absorption, and the thresholded signal is integrated to measure the total of such areas; during each successive frame the threshold is charged and the total area having a greater absorption is determined. In this manner the total area at each absorption level is found, and by multiplying each such total by a calibration factor (e.g. the logarithm of the light absorption) the amount of the substance in each area is found, the sum of these amounts giving the overall content of the substance in the sample. Fig. 1 shows the basic apparatus. The TV camera 1 scans a field of view shown in Fig. 3; the scanning lines a-e intercept a region within contour 12 containing the substance whose quantity is to be determined, and the resulting video signal is shown in Fig. 4. This signal passes via amplifier 2 of Fig. 1 to discriminator 3; during the first frame the discriminator is set on line 4 to pass signals below the threshold 11 of Fig. 4. The output of the discriminator is fed to a monitor 5 on which the contour 12 is thus displayed; the output is also integrated to measure the area within this contour. In the next frame the threshold is changed to 13 of Fig. 4, and contour 14 of Fig. 3 is thereby displayed and integrated. The digital evaluation means 7 of Fig. 1 subtracts the two integrated signals from one another to give the area between contours 12 and 14, and multiplies the result by the mean absorption in this area (this mean lies between levels 11 and 13 of Fig. 4). The result gives the amount of the substance in the area between the contour lines. This procedure is effected for other thresholds and contour lines in the succeeding frames, and the results are summed and displayed at 8 as a total substance measurement. The field of view may contain several regions such as that within contour 12, in which case the Fig. 1 apparatus sums the results from all the regions. The monitor 5 may have a movable mark superimposed on its screen, Fig. 5 (not shown), to allow the operator to designate a single region for measurement by making the mark touch that region.
Patent GB-655121-A (GB)
Title: Improvements relating to ignition means for gas-turbine engines
Inventor: JOHNSON FRANCIS MURRAY
IPC: F02C7/264
Filed: 1948-05-19
Abstract: 655,121. Sparking plugs. ROLLSROYCE, Ltd. May 19, 1948, No. 13612. [Class 7(iv)] [Also in Group XI] Ignition means for a gas turbine engine comprises a plurality of insulated rod electrodes arranged with their sparking tips adjacent the sparking surface of a common earthed rod electrode to form a plurality of spark gaps and a separate electrical high potential source for each insulated electrode whereby each is brought to its sparking potential independently of the others. The insulated electrodes 11, each connected to a battery 13, and the earthed electrode 12 are arranged so that their tips do not lie in a straight line. Two electrodes 11 may be aligned with one another and the third may be located at right angles to them in alignment with the earthed electrode. The means may be utilized in the ignition apparatus described in Specification 616,481, [Group XI]. According to the Provisional Specification the earthed electrode may be in the form of a coil through which is passed a low voltage current for heating and vaporizing the fuel to assist ignition.
Patent GB-775575-A (GB)
Title: Improvements in locks for doors and other closure members
IPC: E05B55/00
Filed: 1954-05-10
Abstract: 775,575. Locks; latches. BACKHOUSE, H. T. Aug. 10, 1955 [May 10, 1954], No. 13627/54. Class 44. Relates to a door lock of the kind having a bolt which normally extends from a casing but may be withdrawn inwardly of the casing to a release position, a barrel-type lock at one side of the casing, and means operable by the barrel lock by which the bolt may be locked in the extended position. According to the invention, the barrel lock-operated means comprise an abutment member which is movable by operation of the barrel lock to and from a bolt holding position, thereby to hold the bolt in extended position, a lost-motion between the barrel lock and the abutment member permitting movement of the member to the bolt-holding position independently of the barrel lock when the latter is in its unlocked position and handle-operated means accessible at the opposite side of the casing by which the member may be moved to and from the bolt-holding position without operation of the barrel lock when the latter is in its unlocked position. In the arrangement according to Figs. 2 and 3 a spring-loaded latch bolt 14 is lockable in its shot position and is retractable, by means of a handle-operated pivoted arm 20. A barrel lock 39 is clamped within the lock casing by means of a split block, the clamping screw 41 of which is accessible upon removal of a front end cover-plate of the casing. The cylinder of the lock carries a plate 47 abutment faces 47a, 47b of which are engageable with a pin 30 on the arm 20 and provide a lostmotion connection between the plate and the arm 20, permitting withdrawal or deadlocking of the latch bolt exclusively by means of the handle, or rotation of the barrel lock back to its normal position to allow removal of the key, after rotation of the lock to deadlock the latch bolt. The bolt may be held in the withdrawn position by a finger-operated catch 31. In another arrangement, Figs. 7 to 9, a spring- loaded latch bolt 51 is withdrawable by either of a pair of handle-operated arms 54, 55. A barrel lock 63 is secured within the lock casing in a manner similar to that of the Fig. 2 arrangement and is adapted to rotate an arm 65 arranged to engage either of two pins 67, 68 on a rotatable cam disc 69. Rotation of the disc 69 operates a spring-loaded lever 72 which engages a slide 74 for deadlocking the bolt 51. The disc 69 is also rotatable by a handle 77 to raise and lower the slide 74 when the arm 65 is in the upright position corresponding to the position of the lock 63 at which the key thereof is insertable or withdrawable.
Patent GB-528484-A (GB)
Title: Methods and circuits for use in eliminating interference in radio reception
IPC: H03G11/04
Filed: 1939-05-08
Abstract: 528,484. Radio receivers. MAGYAR WOLFRAMLAMPA GYAR KRAMENEZKY JANOS R. T. May 8, 1939, No. 13745. Convention date, May 6, 1938. [Class 40 (v)] In a receiver in which the received signal is blocked during moments of interference, the bias for effecting this blocking is the sum of potentials proportional to the mean amplitude of the carrier and the modulation envelope. Carrier frequency oscillations, such as intermediate frequency, are applied through a condenser 7 to a rectifier 6, and develop across a resistance 8 (the time constant of 7, 8 being long), a voltage proportional to the mean amplitude of the carrier. Low frequency oscillations are applied through a condenser 11 to a rectifier 10 and develop across a resistance 12 (the time constant of 11, 12 being about 1/40th of a second) a voltage varying with the envelope of the modulations. The voltage appearing at point b is either compared with a voltage proportional to the modulation of the carrier as in Specification 517,909 or is used to control the characteristic of an amplitude limiting pentode 15. This pentode has its anode and screen grid supplied across voltage dropping resistances 31, 27, 28 in such a manner that the voltage on the anode is about half that on the screen grid, and the actual voltages thereon are controlled by a triode 22 in shunt to the resistances 27, 28 and controlled by the bias of point b.
Patent GB-314643-A (GB)
Title: Improvements relating to haulage gear for power tractors
IPC: A01B3/68
Filed: 1928-05-10
Abstract: 314,643. Henderson, G., and Henderson, W. M. May 10, 1928. Anchoring. - A pair of spades 15 pivotally attached to spaced cheek plates 2 on a tractor 1 are engaged with the ground for preventing retrograde movement when the winch 5 is in operation.
Patent GB-442402-A (GB)
Title: Improvements in screening apparatus
IPC: B07B1/48
Filed: 1935-05-10
Abstract: 442,402. Sifting-apparatus. TYLER CO., W. S., 3615, Superior Avenue, Cleveland, Ohio, U.S.A. May 10, 1935, No. 13832. Convention date, March 15. [Class 117] In screening-apparatus wherein the screen is vibrated by a shaft disposed centrally with regard to the frame, the frame comprises spaced sheet metal side members connected by cross-bars, each side member having a longitudinal outwardly projecting trough shaped stiffening part disposed intermediate its upper and lower edges. In the form shown, the longitudinal plates 1 between which the screens 8, 16 are disposed have their rigidity increased by the outwardly bent portions 2 traversed by bolts 10 which, with angle members 5, enable the screen tension to be adjusted. The plates 1 are secured to bearing housings for the belt driven eccentric shaft 45 by which the screens are gyrated, the shaft being supported by fixed bearings 56. A supporting spiral spring is provided at each corner of the screens. In the form shown in Fig. 7, the troughs are formed by welded or reinforcing members 35.
Patent GB-332319-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: C09B29/20
Filed: 1930-05-03
Abstract: 332,319. Groves, W. W., (1. G. Farbenindustrie Akt.-Ges.). May 3, 1929. Azo dyes are made in substance or on a substratum by coupling any diazo, tetrazo, or diazoazo compound with a 4-(2-hydroxy-3'-naphthoylamino)-diphenylamine. The following components are specified :-The 2 : 3-oxynaphthoyl derivatives of 4-aminodiphenylamine, 4'-nitro-, 2<1>- or 4<1>-methoxy-, 4<1>-methyl.3<1>-chloro-, 4<1>-methyl, 3<1>- chloro-, and 3<1>: 4<1>-dichloro-4-aminodiphenylamine; 4-, 5-, or 6-chlor-2-toluidine, 5-nitro-2- anisidine, dianisidine, m-xylidine, 5-nitro-2- toluidine, o-aminoazotoluene, alpha-aminoanthraquinone, p-nitrobenzeneazo-4-amino-2: 5-dimethoxybenzene, m-chloraniline, 4-chloro-2-amino-1-ethylbenzene, o- or m-nitraniline, 2-chlor-4-nitraniline, o-phenetoleazo-1-naphthylamine, 4-chlor-2-aminodiphenylether, 4-nitro-2-anisidine, 2:5-diohloraniline, 4-chlor-2-nitranilina and 4 : 6-dichlor-3- toluidine. Specifications 6379/12; and 17279/13, [Class 15 (ii), Dyeing, Processes &c. for], are referred to. 4-(2<1>-Hydroxy - 3<1> naphthoylamino) - diphenyl amines are made according to Specification 23732/13.