baber/WOPTO huggingface dataset:
Patent GB-755145-A (GB)
Title: Improvements in or relating to electrode systems for oscillator tubes having crossedfields
IPC: H01J23/075
Filed: 1954-05-19
Abstract: 755,145. Travelling-wave tubes; magnetrons. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 19, 1954 [May 19, 1953], No. 14755/54. Class 39 (1). A backward-wave oscillator of the magnetron type has two auxiliary electrodes P, W in line with the delay line L and the negative electrode S, and the cathode K is mounted in a recess in the electrode W. Electrode W is mounted on a member G insulated within a recess of the electrode S. The cathode terminals F are insulatingly mounted on the member G. The front lip U, Fig. 3, of the cathode recess is sloped to provide a uniform field. The edges of electrodes W, P, E and S may be rounded. The electrons perform 1<SP> </SP>1/2 cycloids before entering the interaction space. The electrode P is maintained at a potential halfway between the potentials of electrodes L and S. Modulating potentials are applied to electrode W.
Patent GB-593767-A (GB)
Title: Improvements in or relating to self-sealing couplings for fluid supply lines
IPC: F16L37/22
Filed: 1945-06-11
Abstract: 593,767. Self-sealing couplings. UNI-GUN LUBRICATING EQUIPMENT, Ltd., and MARTONFALVY, I.C. June 11, 1945, No. 14782. [Class 99 (i)] A self-sealing coupling for engagement with a nipple or like has a hollow body 10 for attachment to a supply conduit and a valve 23 normally co-acting with a seating 13 in the body and opened against a spring 26 by insertion of the nipple, Fig. 2, which when inserted further engages a spring pressed retaining member 17 and permits detents such as pins or balls 16 to be cammed into a nipple groove 34 by a shoulder 29 on an enclosing sleeve 28. When the nipple is withdrawn the valve is closed by its spring and the detents and member 7 secured to the Fig. 1 position.
Patent GB-1535546-A (GB)
Title: Electric switch arrangement for hand-held portable appliance
IPC: B26B19/38
Filed: 1976-04-12
Abstract: 1535546 Mechanical switches SPERRY RAND CORP 12 April 1976 [4 June 1975] 14818/76 Heading H1N An electric switch 30, Fig. 2, mounted within a casing of an electric appliance has an actuator 32 coupled to an operating member 72 slidable in a slot 90 in the casing wall 88 and co-operating with a resilient detent means 100 within the casing. The operating member 72 has a pair of recesses 78, 80, Fig. 6, alternately engaged by a projection 108 on the detent means 100 in order to define first and second detent positions of the switch. A pair of upwardly extending arms 84, 86 on the operating member 72 engage on opposite sides of the actuator 32 to provide a drive connection. The resilient detent is formed in a flange 56 of a casing part 36 provided for housing the switch 30 which is retained in position by a pair of resilient latching fingers 50, 52.
Patent GB-1342059-A (GB)
Title: Locking device
IPC: B62D33/037
Filed: 1972-03-29
Abstract: 1342059 Bolt fastenings G H WEIG [trading as DR GUNTER H WEIG] 29 March 1972 [5 April 1971] 14840/72 Headings E2A and E2B A fastening device for a side wall of a vehicle by means of which the wall is securable to an adjoining part of the vehicle, comprises a housing 1 adapted to be attached to the wall and having guide means 29 in which a bolt 3 is axially slidable by a handle 2 pivotable about an axis 8 perpendicular to the axis of the bolt, the bolt co-operating with a keeper 5 on the said adjoining part of the vehicle and the axial sliding of the bolt being effected by co-operation of the bolt with at least one cam 12 which is rotatable by pivotal movement of the handle in such a manner that in the fully locked position of the device an axial tension is produced between the bolt and keeper. As shown, the handle is pivoted on pins 14 and has a forked part the arms 13 of which each carry a cam 12 which acts on facing follower faces on flanges 9, 10 of a double T-shaped part 11 of the bolt; the bolt is in two parts 23 24 screwed together whereby the length of the bolt is adjustable. A T-shaped head 26 of the bolt engages in the keeper 5. By rotating the handle outwardly corresponding rotation of the cams therewith causes sliding forward movement of the bolt whereby the keeper is disengageable from the head 26. The handle, in the fastened position of the bolt, is latched in place by a spring catch 22. In a modification, the bolt 3 is formed with a claw (32), Fig. 3 (not shown), providing follower faces (33), (34), the handle 2 being rotatable on a single pin (31) and latched in place by a bolt (41) engaged between springs (43), the bolt (41) being released by pressing the handle so that a sleeve (45) on the bolt forces apart the springs. The bolt has a part-spherical head.
Patent GB-397625-A (GB)
Title: Improvements in or relating to lathes or similar machine tools
IPC: B23B7/16
Filed: 1932-05-25
Abstract: 397,625. Lathes. SUNDSTRAND MACHINE TOOL CO., 2531, 11th Street, Rockford, Illinois, U.S.A.-(Assignees of Dumser, L. A. and Schroeder, C. J. ; c/o Sundstrand Machine Tool Co., 2531, 11th Street, Rockford, Illinois, U.S.A.) May 25, 1932, No. 14863. Convention date, Nov. 30, 1931. [Class 83 (iii).] A lathe or like machine has a pair of laterally spaced substantially parallel frame elements carrying tool slides which are positioned so that when the tools are operating on a rotatable work piece the slides are in compression substantially perpendicular to the frame elements. The opposite frame elements 20, 21 of a vertical spindle machine, having tension members 48, carry tool slides 25 adjustably bolted thereto, these slides carry secondary slides and tool rests capable of vertical and horizontal adjustment with clamping means 34, and may also be arranged to swivel. The adjustment of the main slides towards and away from the work is by fluid means incorporating pistons 64 and cylinders 66, Fig. 5, a slow feed being obtained in any angular position of the slide by a roller 63, on the latter, contacting a rotating cam 62 driven through pick off gears from a self-contained motor (not shown). Quick return is effected by fluid means only without action from the cam. The tools 33 are arranged around the work carrier, Fig. 2, so that the resultant force is compressive and substantially perpendicular to the main slideways. Two separate compartments 51, 52 are provided in the base 10 for chips and a guard 50 prevents chips from entering the bearings of the hollow spindle 11. An adjustably mounted fluid-operated tailstock carrying a dead centre 42 may be provided on one of the frame uprights and connected to the other by a brace 43 to form a closed frame.
Patent GB-990143-A (GB)
Title: Improvements in electric primary cells
IPC: H01M6/08
Filed: 1963-04-17
Abstract: 990,143. Electric cells. VARTA PERTRIXUNION G.m.b.H. April 17, 1963 [June 1, 1962], No. 14993/63. Heading H1B. A relief valve for a primary cell comprises a resilient membrane 2 seating on a member 6 and yielding to excess pressure. The cell is of the zinc-alkaline type.
Patent GB-361307-A (GB)
Title: Improvements in methods of transmission by hertzian waves
IPC: H03B5/34
Filed: 1930-05-15
Abstract: 361,307. Wireless signalling. GUERBILSKY, A., 45 ter, Rue des Accacias, Paris. May 15, 1930, No. 14997. Convention date, May 16, 1929. Void [Published under Sect. 91 of the Acts]. [Class 40 (v).] An auxiliary source of alternating-current is used at a transmitter or receiver with such a frequency as to interfere with the original frequency to produce a frequency corresponding to the invariable frequency of a resonator in the receiver. If two main frequencies and two fixed resonators are used, the auxiliary frequency differs from the respective main frequencies by amounts equal to the frequencies of the resonators. The auxiliary frequency is so high that inequalities in the main frequency are negligible relatively to the resulting frequency.
Patent GB-544417-A (GB)
Title: Improvements relating to compression-ignition engine fuels
IPC: C10L1/24
Filed: 1940-10-08
Abstract: 544,417. Compression ignition fuels. STANDARD OIL DEVELOPMENT CO. Oct. 8, 1940, No. 14997. Convention date, Oct. 28, 1939. [Class 91] Diesel fuel is stabilized by the addition of 0.2 per cent. to 3 per cent. of an organic compound containing a five membered heterocyclic ring structure containing both nitrogen and sulphur. Classes of compounds mentioned include thiazoles, thiadiazoles, thiazolines, benzothiazoles and mercaptobenzothiazoles. Compounds specified include thiazole, 2 : 3-thiadiazole, 3 : 5-thiadiazolt, 2:5-thiadiazole, 3:4-thiadiazole, 3:4:5-thiatriazale, 1:3-dithia-2-azole, thiazoline, 2-mercaptothiazoline, benzothiazole, o-thiazolidine, thiobiazolone, 2-imino-4-keto-thiazole and perthiocyanic acid. The above compounds may be substituted by the groups halogen, amino, mercapto, hydroxyl, alkyl, aryl, -NH-alkyl, -NH-aryl, -N-alkyl, -N-aryl, -S- alkyl, -S-aryl, and organic groups containing heterocyclic ring structures. The preferred subgroup of compounds is benzothiazole, and its substitution products. Compounds of this subgroup mentioned include 2-methyl-benzothiazole, 6-methyl-benzothiazole, 2-mercapto-6-amyl benzothiazole, 2-anilidobenzothiazole, 2-mercaptobenzothiazole 2-butyl-mercaptobenzothiazole, benzothiazolehydrazine, primuline base, and benzothiazyl disulphide. The compounds may be used alone or in conjunction with other ignition promoters such as nitrogen tetrasulphide. Examples of suitable fuel mixtures are given. Specification 544,492 is referred to.
Patent GB-400549-A (GB)
Title: Device for locking the pump of a matrix composing and line casting machine
IPC: B41B11/88
Filed: 1933-05-24
Abstract: 400,549. Type-bar-maldng machines. INTERTYPE CORPORATION, 360, Furman Street, Brooklyn, New York, U.S.A. May 24, 1933, No. 15002. Convention date, June 16, 1932. [Class 100 (iii).] Metal - pumps ; clamping matrices.-In a device for locking the pump of a matrix composing and line-casting machine having levers to release the lock by the spreading of the vice jaws in carrying out the justification of the matrix line, a release lever is moved by contact between the end of the lever and a side surface of one of the jaws against which it is resiliently pressed. The pump-lever g is locked by the lever h which has a slot i fitting over a pin k on the metal-pot a and is adapted to be pressed by a spring l against the inner surface of the vicejaw e, when the mouth b of the metal-pot is pressed against the mould c. The opposite end of the lever h carries a pin m engaging a fork n of the lever p, which is pivoted to the machine frame and engages beneath a projection q on the pump lever g, when in the locking position. The lever h is brought out of this position, after the metal-pot has been advanced, by the movement to the left of the vice-jaw e during justification ; the lever is then in contact with the jaw e and is carried along with the jaw, by the friction between the contacting surfaces, which may be increased by roughening the front end of the lever h or covering it with some suitable material, and, in addition, by providing a set of teeth thereon which may engage a set of teeth on the jaw. After the cast, the metal-pot returns, withdrawing the lever h, and the lever p is drawn back into locking position by the spring s.
Patent GB-1355835-A (GB)
Title: Pressure pickup arrangement
IPC: H04R17/04
Filed: 1971-05-14
Abstract: 1355835 Pickups TELEFUNKEN PATENTVERWALTUNGS GmbH and TELDEC TELEFUNKEN DECCA SCHALLPLATTEN GmbH 14 May 1971 [15 May 1970] 15009/71 Heading H4J [Also in Division G5] In a playback arrangement comprising a pickup and a record carrier for storing signals as variable elastically compressible surface features, the pickup includes an engagement portion adapted, when the pickup is traversed over the carrier, to engage and compress the surface features of the carrier and a pressure loaded mechanical-electrical transducer element operating in the thickness mode for transducing the pressure applied to the engagement portion into electrical signals. The mechanical-electrical transducer element has a thickness in the direction of the reaction between the pickup and the record carrier, less than half the wavelength of the mechanical oscillations produced by the record carrier at the upper limit of the frequency range of the record carrier. The upper frequency limit may be 6 MHz or 4 MHz. The transducer element may be a parallelepiped, e.g. a cube. It may be of piezoelectric, magnetostrictive, piezomagnetic or of pressure sensitive semi-conductor material. The transducer element may be of ceramic material such as lead zirconate-titanate or potassium-sodium-niobate, e.g. lead zirconatetitanate of thickness 0À2 mm. Affixed to a piezoelectric ceramic body 2 (Fig. 1) by means of hard glue is a diamond skid 3 in the form of a three-edged prism. Edge 4 runs in the groove of a hill-and-dale disc and forms with the disc an acute angle of 3 to 10 degrees. Body 2 is secured by an elastic moulding 5 of soft plastics material having high internal damping to an aluminium holder 6.
Patent GB-543269-A (GB)
Title: Improvements in snap couplings for multipole magnetos
IPC: F16D5/00
Filed: 1940-10-10
Abstract: 543,269. Driving magnetos. HASLER AKT.- GES. WERKES FUR TELEPHONE UND PRAZISIONSMECHANIK. Oct. 10, 1940, No. 15107. Convention date, Oct. 21, 1939. [Class 35] In an impulse coupling for driving a multipole magneto the usual pawls or the like are dispensed with. The motor and magneto rotor shafts are connected by a lost motion coupling, the lost motion being, preferably, taken up by springs, and the electromagnetic resistance to relative movement is relied on to delay movement of the rotor between pole changes. A member 2 shaped as an annular trough is keyed to the motor shaft, and is provided with lugs 9. A gear wheel driven by the motor is secured by lugs 11 to a member formed with grooves housing springs 8, the free ends of the springs engaging elastic buffers 10 contacting with the lugs 9. On starting, the springs yield until the torque is sufficient to overcome the electro-magnetic resistance to the motion of the rotor, when sudden yield causes the spark. During normal running the yield of the springs decreases with increase of speed, resulting in appropriate variation of ignition timing.
Patent GB-1497683-A (GB)
Title: Treatment of underwater surfaces
IPC: C09D5/08
Filed: 1975-04-14
Abstract: 1497683 Antifouling coatings for marine use BRITISH PETROLEUM CO Ltd 24 March 1976 [14 April 1975] 15202/75 Headings C3B and C3P A film is made from a copolymer of an acrylic acid ester and an acrylic acid salt of a metal having anti-fouling properties, the ratio of ester to salt being at least 60 : 40 molar. An anti-fouling paint, comprises a filmforming binder and a non-film forming polyacrylate salt of a metal having anti-fouling properties. The metal may be Cu, Zn, Ni, Co, Mu, Sn, or Hg. A suitable binder is an epoxy coal tar resin.
Patent GB-612355-A (GB)
Title: Improvements in or relating to boxes of cardboard, pasteboard or similar material
IPC: B65D5/64
Filed: 1946-05-20
Abstract: 612,355. Boxes. FILMER, Ltd., R. H., and FILMER, J. W. May 20, 1946, No. 15207. [Class 18] A cardboard box having a hinged lid, has slits 30, 32 in corresponding overlapping side walls 25, 28 of the box and lid, the slits being curved at 31, 33 to form tongues which interengage to keep the box closed. To facilitate the engagement of the tongues. a cut out portion may be arranged to give a clearance round each tongue. A handle which assists in keeping the box closed may be formed by a loop of cord engaged in slits at opposite ends of a rectangular card, the card being placed on the inside of the box and the loop being passed through the slits 30, 32, the tongues 31, 33 being kept within the loop. In an alternative form, a tongue is cut on one wall only, a plain slit being cut in the other.
Patent GB-771979-A (GB)
Title: Improvements in or relating to receiving circuit arrangements for frequency-modulated oscillations
IPC: H03G11/06
Filed: 1955-05-26
Abstract: 771,979. Frequency modulation; frequency changing. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 26, 1955 [May 29, 1954], No. 15220/55. Drawings to Specification. Classes 40(5) and 40(6) Frequency modulated received waves are applied through a pre-amplifier and peak amplitude limiter to a self-oscillating additive frequency changer to avoid lockin of the local oscillation frequency on any occurrence of high amplitudes of the waves. The limiter may be a rectifier shunting the anode circuit of the preamplifier and biased to a value .5 volts or less from a filter network in the HT supply line.
Patent GB-1208048-A (GB)
Title: Gas laser
IPC: H01S3/105
Filed: 1968-03-29
Abstract: 1,208,048. Lasers. COMPAGNIE GENERALE D'ELECTRICITE. 29 March, 1968 [31 March, 1967], No. 15293/68. Heading H1C. A gas laser comprises a quartz capillary tube 1 coupled to cavities 5, 7 housing discharge electrodes 6, 8, the respective ends of the capillary 2 being closed by a plane resonator mirror 14 and by a plane window 15 inclined at the Brewster angle, the second resonator mirror 16 being mounted on a piezo-electric sleeve 17 in spaced relationship to the window 15 so that the resonator dimension may be electrically varied. The window 15 is frequencyselective, and has considerable absorption at unwanted frequencies; e.g. for a helium-neon laser it passes wavelength 6328 and absorbs wavelength 3À39Á. This window is hermetically enclosed by the piezo-electric sleeve 17 and the mirror 16. The laser output is monitored by a photo-detector 21 the output of which passes through a synchronous detector 22 to control the output amplitude of a generator 20. The generator output, e.g. 5 kc./s., is applied to electrodes 18, 19 of the piezo-electric sleeve 17 and serves to modulate the output frequency of the laser by changing the resonator dimension. The arrangement is stated to impart output frequency stabilization.
Patent GB-563130-A (GB)
Title: Improvements in vehicle brakes
IPC: B61H13/24
Filed: 1942-10-30
Abstract: 563,130. Vehicle brakes. DIURSON, A. R. K., and SVENSKA AKTIEBOLAGET BROMSREGULATOR. Oct. 30, 1942, No. 15312. [Class 103 (i)] The frictional force acting on the brake shoes during a brake application is used to vary the distribution of the braking pressure applied as between the wheels at the two ends of a vehicle so that this distribution may accord with the variation of the distribution of the load on the wheels brought about by the retardation of the vehicle. As shown, brake shoes 3a, 3b are arranged to be applied to wheels 2 of a railway bogie or truck by levers 4, S connected together by a rod 6 and respectively mounted at 7 on the truck frame and connected to an operating rod 8. The shoes are supported by links 9, 10 from a lever 11 which surrounds the bolster 12, is pivoted at 13 to the truck frame and which carries at 15 a lever 16 connected by links 17, 18 to the brake shoes. When the shoes are applied by the rod 8, the frictional drag thereon acting through the levers 11, 16 increases the pressure on the shoes of the forward wheels and reduces by an equal amount the pressure applied to the shoes of the rear wheels, irrespective of the direction of travel. Means, such as an empty-load change-over device, may also be provided for varying the braking power according to the load of the vehicle.
Patent GB-702078-A (GB)
Title: Improvements in or relating to telephone systems
Inventor: GALVIN JOHN LESLIE
IPC: H04Q1/446
Filed: 1951-06-28
Abstract: 702,078. Voice frequency signalling; twoway transmission. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. June 12, 1952 [June 28, 1951], No. 15343/51. Class 40(4) In a voice-frequency signalling system the receiver for incoming signals is rendered insensitive to outgoing signals and to locally produced speech, noise, and tones by associating it with a winding of a hybrid transformer which is also connected to the network employed for balancing the local 2-wire line. As shown in the 4-wire termination of Fig. 1, the V.F. receiver VR is connected in shunt with the balance network QA, YA which balances the local 2-wire line ES. Outgoing V.F. signals are applied directly to the pair OL by contacts SX1, SX2 under control of the outgoing relay set which connects the V.F. currents to leads SG. If desired, signalling may take place simultaneously in both directions. Due to an imperfect balance at the remote exchange part of the transmitted signal may appear on the incoming pair IL and if the same frequency is employed for signalling in both directions operation of VR may occur. This may be prevented by short-circuiting IL during outgoing signalling. Another method of preventing such false operation is shown in Fig. 2 in which the contacts SX1, SX2 disconnect the receiver during outgoing signalling and apply the V.F. currents to the balance winding of the hybrid. This has the advantage that access to the 4-wire side of the hybrid is not required. In the case of a 2-wire trunk the trunk is connected as is IL in Fig. 2'and the outgoing pair OL (Fig. 2) is replaced by a further balance network. The invention is particularly applicable in cases where it is desired to receive signals while transmitting dialling or N.U. tone. At a tandem exchange at which switching is on a 4-wire basis the hybrids may be connected in a " tail-eating " circuit, the V.F. receiver in the outgoing relay set being disabled by the incoming relay set and vice versa, as described in Specification 674,243, to prevent both receivers responding to one signal.
Patent GB-153738-A (GB)
Abstract: 153,738. Edmonds, O. D. Sept. 22, 1919. Road-traffic signals on vehicles.-In a direction-indicator for vehicles, a cylindrical member a rotatable about a spindle carries a triangular extension e, both member and extension having glass fronts b, f and containing electric lamps g, h. The spindle runs on ball bearings c, on a streamline pedestal d. Upon the spindle is a conical seating j on which is locked a drum k carrying a pair of wire cables m which co-operate with a second drum near the driver's seat. One end of the part j is formed with a spigot o screwed axially to a sleeve q with one end bifurcated to engage with the pin p on the spigot. The other end of the sleeve is threaded at r to carry a spider s and lock-nut, the spider being screwed to the body a. On the sleeve is fitted an insulating-ring v carrying four diametrically opposite conducting-studs w connected in pairs and adapted to make contact with brushes y mounted on terminal rods z which are connected to the source of current by means of leads 11. Extensions x on the studs are connected by spring fingers 14 suitably insulated by rings of insulating- material to two commutator segments 19 formed on the spindle. These make contact with spring brushes 20 to which the lamps are connected in parallel. Means for controlling the extent of rotation comprise a ring 25 screwed to the pedestal, containing four cup-like recesses 90 degrees apart, adapted to receive balls 27 which are carried loosely in apertures in a sleeve 28 screwed to the part j. This sleeve has an internal flange 29 to which is screwed the screw 30, the space between the screw 30 and the sleeve 28 containing a wedge ring 35 and a spring 36 adjustable by means of the nut 37. This ring tends to force the balls at the appropriate points into the recesses.