baber/WOPTO huggingface dataset:
Patent GB-1190675-A (GB)
Title: Improvements relating to Secondary Radar Transponders.
Inventor: WOOLLVIN GEOFFREY GEORGE
IPC: G01S13/76
Filed: 1969-02-14
Abstract: 1,190,675. Transponders. A. C. COSSOR Ltd. 14 Feb., 1969, No. 8266/69. Heading H4L. In a secondary radar transponder the received video signal V v  consisting of pulses P 1  to P 5 , Fig. 2 (a), which are spaced by 2 Ás., the pulses P 1  to P 4  being transmitted by a directional aerial and pulse P 5  being transmitted by an omnidirectional aerial for side lobe suppression, is supplied to input 12 of a differential amplifier 10 which receives a reference voltage V R  from a capacitor 16 as its second input 14. A constant current device 20 allows the reference voltage to decay with a predetermined time constant as shown by the broken line, Fig. 2 (a). The amplifier 10 provides an output signal when Vv exceeds V R  which controls the clock input of a bi-stable 22 to supply an output Q to a delay circuit 24. The invention provides that the circuit 24, Fig. 3 (not shown), supplies an output pulse Po at the end of its 0À3 Ás. delay period but only if the input from the bi-stable 22 is still present whereby the circuit discriminates against short interference pulse such as PN, Fig. 2 (c). This pulse P o  is shaped at 32 and supplied via terminal 34 to group recognition circuits. The arrangement is compatible with other interrogating systems and components 36, 38, 40, 42, are provided for inhibiting an output terminal 44 when a three-pulse signal is in use and interrogation is taking place on a sidelobe. When the delay circuit produces a pulse Po a transistor switch 26 conducts and connects together terminals 12 and 14 so that V R  = V v  and the amplifier 10 returns to its quiescent state to preset the bi-stable via differentiating amplifier 28 and terminal P to the state Q = 0. Interference pulses of intermediate amplitude such as P, Fig. 2 (d) which are of width sufficient for voltage V R  to fall below Vv, are also suppressed from the output signal. The bi-stable 22 only produces an output Q if zero input is supplied to terminal D. A differentiating amplifier 30 connected to terminal D normally produces an output signal but a short pulse at zero level is produced at the leading edge of each video pulse so that an output Q is produced only when the output of amplifier 10 is switched simultaneously with the rising edge of a video pulse.
Patent GB-350553-A (GB)
IPC: H02P5/695
Filed: 1930-03-14
Abstract: 350,553. Actuating controllers. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) March 14, 1930, No. 8277. Convention date, March 14, 1929. [Class 38 (iii).] Electromagnetically.-Two motors 10, 12, with their torques in opposition, are used to effect stepby-step rotation of a drum controller. With the master switch 9 on contact stud 37, relay contacts 32 are opened and the torque of motor 10 is reduced, so that the motor 12 drives the drum forwards under the control of an accelerating relay 19. Reverse rotation is obtained with switch 9 on stud 36 under the control of a braking relay 20.
Patent GB-1193756-A (GB)
Title: Process for Purifying Enzymes
IPC: C12P19/34
Filed: 1968-02-20
Abstract: 1,193,756. Polynucleotide phosphorylase. SCHWARZ BIORESEARCH Inc. 20 Feb., 1968 [23 Feb., 1967], No. 8278/68. Heading C3H. A process for purifying an enzymic solution containing polynucleotide phosphorylase and a nucleic acid impurity such as ribonucleic acid, deoxyribonucleic acid or mixtures thereof comprises adding a solution containing magnesium ions in a concentration between 0.01 and 0.1 moles per litre to the enzyme solution, allowing said magnesium ions to react with the nucleic acids to effect precipitation thereof, and separating the precipitate from the solution to recover an enzymic solution substantially free of nucleic acids. In a preferred procedure the impure enzyme is enclosed in a dialysis bag and dialysed against a buffered magnesium solution. The enzyme may be produced by cultivation of Micrococcus lysodeikticus.
Patent GB-143278-A (GB)
Title: Improvements in or relating to riveting machines
IPC: B21J15/20
Filed: 1918-05-17
Abstract: 143,278. Jay, R. May 17, 1918. Riveting.-In riveting-machines of the kind in which the d i e s are carried by auxiliary holders for effecting the riveting of work which is difficult of access, the upper die-holder comprises a lever 3 pivoted about an horizontal pin 19 carried bv an intermediary part 30 swivelly secured in the upper snapholder 2, so that the lever 3 is capable of movement in both vertical and horizontal planes. Bolts 20, movable in an annular channel in the upper jaw 1<a>, take the thrust when riveting is effected at either end 8 or 16. The lower auxiliary holder 9 is fixedly secured to the lower jaw 1<b>. The auxiliary holders 3, 9 may have more than two arms.
Patent GB-232029-A (GB)
Title: Improvements in and relating to reaping or mowing machines
IPC: A01D34/125
Filed: 1924-04-02
Abstract: 232,029. Rogers, F. H., (Langenau, W.). April 2, 1924. Mowing-machines.-A track-clearer is applied to a machine having a lateral projecting cutting- apparatus of the type in which the width of the machine (apart from the cutting-apparatus) is equal to or does not greatly exceed that of the track required by a single draft animal, such clearer or deflector being mounted on the outer end of the knife-beam and being adapted to deflect the cut crop away from the standing crop so as to clear a path behind the knife-beam the width of which is less than the length of the knife-beam but is sufficient to allow the machine to pass. The track-clearer 4 is arranged at the outer end of the knife-bar 2 of a mowing-machine of the type carried by a single main wheel 1 and an auxiliary wheel 5. The knife-bar 2 and platform 3 may be raised for transport.
Patent GB-1145215-A (GB)
Title: Catalyst preparation and use
Inventor: JONES JOHN ROBERT
IPC: B01J37/02
Filed: 1967-02-22
Abstract: 1,145,215. Polymerisation catalysts. BRITISH PETROLEUM CO. Ltd. 26 Jan., 1968 [22 Feb., 1967], No. 8360/67. Addition to 1024314. Heading B1E. The process of the parent Specification 1024314 for the preparation of catalysts comprising Co or Ni and .activated carbon, in which the activated carbon is pretreated with HNO 3 , impregnated with aqueous Co(NO 3 ) 2  or Ni(NO 3 ) 2 , all the water removed, suspended in a fluidised bed by means of an inert gas under conditions of increasing temperature, the bed is saturated with water when the tempera-' ture reaches 180-220‹C. the heating is continued until all the water has been removed and thereafter the temperature is raised to not more than 300‹C to complete decomposition is modified in that the final decomposition is effected at 300-600‹C.
Patent GB-526441-A (GB)
Title: Improvements relating to scrapers for paint or like roller mills
IPC: B02C4/40
Filed: 1939-03-16
Abstract: 526,441. Roller mills. CONSTANTINE. A. C. March 16, 1939, No. 8398. [Class 59] A resilient scraper for removing ground material from the periphery of the delivery roller of paint &c. roller mills is made from metal strip or narrow metal sheet, with transverse slits extending from its longitudinal scraping edge. As shown, a sheet-metal scraper a, mounted in a holder e so as to engage the periphery of the delivery roller d, is formed with a number of transverse slits b extending from the scraping edge c. In a modification, the scraper consists of two or more lengths of metal strip arranged end to end in a holder, each length being formed with one or or more transverse slits extending from its outer edge. In another modification, the scraper consists of a number of short separate strips arranged end to end in a holder, the contiguous edges forming the slits.
Patent GB-609615-A (GB)
Title: Improvements in the construction of projection and photographic lens systems
IPC: G02B13/00
Filed: 1946-03-19
Abstract: 609,615. Lens systems. BUDDEN, R. G., and BLACKMORE, L. March 19, 1946, No. 8432. [Class 97 (i)] To correct, at least partially, zonal aberrations, a photographic or projection lens has disposed coaxially therewith and between its front surface and its focal plane one or more plane, parallel sided circular or annular zone plates of chosen dimensions and refractive index. The plates may be connected to a supporting plate or to the plane surface of a lens, and may correct spherical or comatic aberration or both. Numerical data are given for the cemented doublet shown, having cemented thereto zone plates P2, P3, P4, the latter two having the same refractive index. In another example, plates P2, P4 are omitted and in a third example the plates P3 and P4 are omitted.
Patent GB-626166-A (GB)
Title: Improvements in or relating to boxes, cartons and the like
IPC: B65D5/26
Filed: 1947-03-28
Abstract: 626,166. Boxes. ROBINSON, Ltd., E. S. & A., ROBINSON, P. N., and BOND, R. H. March 28, 1947, No. 8478. [Class 18] A box is formed from a blank comprising a base 1 having extensions on all sides which fold up to form hollow walls. Each extension consists of two panels separated by a strip 4 or 12 and having a ledge 5 or 13. The panels 2, 3 on the long sides of the box have extensions 6, 7, the latter having notches 8. For transit in a flat condition, the panels 2, 3 are folded upon each other, their ledges 5 being secured to the base. In erecting, the sides comprising panels 2, 3 are folded at right angles to the base, the extensions 7 interlocked by the notches 8 and the extensions 6 folded on the extensions 7. Panels 10, 11 of the ends of the box are folded up to enclose the extensions 6, 7 and their ledges 13 are tucked beneath the extensions 6, 7 to lock the box in an erect condition. In a modification, the extensions 7 may have flaps at their upper edges which are bent towards the extensions 6 when the box is erected.
Patent GB-787839-A (GB)
Title: Improvements in or relating to textile drawing-in frames
IPC: D03J1/14
Filed: 1953-03-27
Abstract: 787,839. Textile drawing-in frames. ASPINALL, A. E., and HOLROYD, C. R. March 29, 1954 [March 27, 1.953], No. 8494/53. Class 142(1) A drawing-in frame, for use with an automatic readher-in which travels across the frame and selects the warp threads, is pivoted so that it can be swung from a vertical position to a substantially horizontal position (Fig. 3), in which stopmotion droppers can be moved to the rear of the frame and a lease struck with the warp threads. The frame 5, pivoted at 2, has clamps 13, 25, for the warp, the clamp 13 being adjustable along a slot 9 in an arm 7 by a handle 17 and links 19, 21, and the clamp 25 being adjusted by screws 27. A screw 27 is provided at each side of the frame and may be adjusted independently or may be connected by gearing. A handle 39, links 35, 37 and a ratchet 41, 43 are provided for swinging the frame. Warp stop motion droppers 51 are moved to the rear against the clamp 13 when the warp is substantially horizontal.
Patent GB-1401126-A (GB)
Title: Impact damping means for fluid cylinders
IPC: F16F9/58
Filed: 1973-02-21
Abstract: 1401126 Hydraulic actuators MOSIER INDUSTRIES Inc 21 Feb 1973 [10 Aug 1972] 8509/73 Heading F1D [Also in Division F2] A piston 18, Fig.1, is damped at the ends of the stroke by resilient rings 28 which abut the ends of the cylinder 14, 16 and force trapped fluid out through orifices 52 which may be adjustable. Notches 56, Fig.5, may be provided in the bumper portion 40 of the ring. Fig.6 shows an embodiment in which the rings 128 are retained in grooves 68 in the end walls of the cylinder. As before fluid is trapped between the piston and the ring at the end of the stroke and expelled through throttles 74 when portions 72, 78 of the piston-rod engage seals 148 and the piston face abuts projecting rings 140.
Patent GB-374954-A (GB)
Title: Improvements in fabric winding mechanism for looms
IPC: D03D49/20
Filed: 1931-03-19
Abstract: 374,954. Take up mechanism for looms. DIEDERICH, LES FILS DE G., Ste. Colombe-les-Vienne, Rh¶ne, France. March 19, 1931, No. 8522. Convention date, Nov. 17, 1930. [Class 142 (ii).] The fabric passes around traction rollers e, e<1>, which art driven in the same direction by a spur wheel on a worm-driver shaft. Two presser rollers f, f<1>, which are rotated by the fabric guide it around the rollers e, el The cloth beam or roller h is driven by the rollers e, e<1>, and is held in contact therewith by means of counterweighted levers. The roller e<1> has an emerized surface, whilst the roller e is covered with felt or cloth.
Patent GB-371132-A (GB)
Title: Change-speed gear mechanism
IPC: F16H3/16
Filed: 1931-03-20
Abstract: 371,132. Variable-speed toothed gearing. STANDARD MOTOR CO., Ltd. and MAUDSLAY, R. W., of Standard Motor Works, Canley, Coventry. March 20, 1931, No. 8587. [Class 80 (ii).] Relates to countershaft three-speed gearing for motor vehicles of the type in which a constantly rotating lay shaft 7 drives a secondspeed gear-wheel 9 loose on the driven shaft 3 and in which a sliding wheel 11 splined to the shaft 3 carries end clutches 12, 13 for direct drive and second speed, respectively, a wheel 17 splined on the shaft 7 being engaged with the wheel 11 for first speed, the constant mesh gearing 5, 6, 8, 9 being preferably helical. The wheel 17 is locked in the position shown except when moved for first speed and constantly engages a long idler wheel 18, which is slid to engage the wheel 11 for reverse.
Patent GB-1190911-A (GB)
Title: Improvements relating to Derrick Cranes to Prevent Swinging of the Load
Inventor: MORRISON ROBERT
IPC: B66C13/06
Filed: 1966-02-25
Abstract: 1,190,911. Ship's derricks. R. MORRISON. 24 May, 1967 [25 Feb., 1966; 26 Feb., 1966], Nos. 8321/66 and 8588/66. Heading B8B. To minimize swinging of the load hook of a ship's derrick having a cross beam 2, Fig. 1, the combined lifting and slewing rope passes from a winch round the following pulleys: 3, 4A, 5, 4B, 6, 7, 6, 4B, 5, 4A, 3 and either back to the winch or to a fixed point. To provide a sixpart instead of a four-part purchase the pulley 7 is moved and attached to the load block 5. Fig. 3 illustrates an embodiment in which the four falls are all separated by mounting the pulleys 4A at the ends of a beam 2A. A sixpart purchase can be provided as described with ref. to Fig. 1.
Patent GB-268396-A (GB)
Title: Improvements relating to revolution counters
IPC: G06M1/16
Filed: 1927-03-29
Abstract: 268,396. Mombur, G. March 29, 1926, [Convention date]. Transfer mechanism.-In a revolutions counter the connection between two adjacent numeral drums is effected by an intermediate wheel submitted to the action of one drum and transmitting said action to the next drum in one and the same plane, the said wheel being provided with notches and teeth, the notches being formed in the axes of said teeth. The numeral drums are mounted on a common spindle and each is formed on one side as shown in Fig. 2, with a pin 7 and a locking ring 5 with an opening opposite the pin 7; the other side of each drum Fig. 3 is formed with a ring of peg teeth 10. The pin 7 and pegs 10 co-operate with a Geneva wheel 9 having teeth 8 in each of which is formed a notch 8<1>. The pin 7 once in each revolution is adapted to enter a notch 8' and rotate it the movement being transmitted through the engagement of a peg 10 in a tooths space 9<1> of the wheel 9.
Patent GB-782112-A (GB)
Title: Improvements in and relating to automatic control circuits for doors in underground mines
Inventor: CREETH DENNIS
IPC: E05F15/20
Filed: 1954-03-24
Abstract: 782,112. Door-operating apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. March 18, 1955 [March 24, 1954], No. 8628/54 Drawings to Specification. Class 65(1) An air-lock door in a mine gallery provided with a railway track is prevented from closing across the track by an electric circuit which includes a normally insulated section of the track, running through the doorway and which is completed by a vehicle on the track. The door swings upwardly to the open position and is so arranged that when free it will close or open according to its position in relation to an intermediate position in which it is just not clear of a vehicle, so that it cannot fall on to a vehicle which has entered beneath it; the door is opened and closed by separate electro-hydraulic devices such as that described in Specification 363,137. The circuits described involve two additional insulated rail sections in addition to that running through the door (five in all): Entry of a vehicle on to either inner section of track causes energization of a dooropening relay, provided that an interlock switch is closed by an adjacent door being in the closed position, the circuit being maintained by a contact operated by the door; entry into the section running through the door then causes a closing circuit to be prepared while still keeping the door-opening circuit closed, but opens a contact in the circuit of the closing motor so that the latter cannot be energized accidentally until this section of track becomes unoccupied, its circuit normally being completed only as a result of subsequent occupation of one of the outer sections of track. Push button switches are provided for opening and closing the doors when required. Colour-light signals indicating the position of the door are controlled by switches actuated by the door and by the occupation of the section running through the door. Specification 756,887 also is referred to.
Patent GB-767000-A (GB)
Title: Improvements in or relating to sealing means for preventing the escape of powdered flowable material from a space between relatively rotatable parts
IPC: F16D37/02
Filed: 1955-03-24
Abstract: 767,000. Electromagnetic brakes and couplings. SMITH & SONS (ENGLAND), Ltd., S. March 24, 1955 [March 25, 1954], No. 8647/55. Class 35. A magnetic powder clutch or brake comprises a driving member having two annular U-shaped channel members 20, 22 embracing two annular field coils 38 and two driven members having cylindrical parts 44, 45 located in the annular space 36 of the driving member two fans 94, 96 being carried on the opposite sides of a disc 92 fixed to driving member 22. The annular space 36 contains the magnetic powder which is substantially presented from escaping therefrom by labyrinth sealing rings 72, 78, 74, 76, 80, 82 carried by the members of the clutch. Any powder escape past the sealing rings is connected in an annular chamber 120 formed between the disc 92 and the hub member 56 of the driven member 54. The powder is stopped from escaping from the chamber 120 by a stream of air circulated by the shrouded fans 94, 96 in the direction shown by the arrows. The outer fan 96 has a larger diameter than that of the inner fan 94. The clutch driven members are mounted on two concentric shafts 48, 59 separated by ball bearings 58. The hub member 84 of the clutch driving member is journalled on the shaft 48 and sealing elements 88, 90 are provided between the member 84 and the adjacent inner portions of the hub members 46, 56 of the driven members. Specification 764,949 is referred to. Reference has been directed by the Comptroller to Specification 649,553, [Group XXXIV].
Patent GB-1175331-A (GB)
Title: Improvements in or relating to Pipe-Bending Machines.
Inventor: ALLEN ALBERT
IPC: B21D7/022
Filed: 1968-02-22
Abstract: 1,175,331. Bending. C. & J. HAMPTON Ltd. 22 Feb., 1968, No. 8664/68. Addition to 1,163,407. Heading B3E. The pipe-bending machine of Specification 1,163,407, includes a stop located at X for limiting the travel of the roller 23 as bending takes place. The stop may be integral with the guide 26. Alternatively a setting piece 25 screwed or otherwise secured to the upper surface of the guide may also act as the stop, the guide being removed, after adjustment of the roller height with reference to the setting piece, and replaced in reversed disposition i.e. with the setting piece at X.
Patent GB-196780-A (GB)
Title: Improvements in and relating to lace braiding machines
IPC: D04C3/38
Filed: 1922-03-27
Abstract: 196,780. Krenzler, G. March 27, 1922. Braiding-machines.-The bobbin-driving discs l of a lace machine are each secured to or formed with a bearing sleeve b to which is splined the upper part c of a driving-clutch by means of an easily removable round pin d. The part b rests on a ring g fixed to the stub axle, the enlarged lower end i of which forms a bearing for the driving wheel h while a clutch member f fixed to it surrounds the ring g.
Patent GB-989044-A (GB)
Title: Improvements relating to carding machinery
Inventor: GROVES ERNEST
IPC: D01G27/02
Filed: 1963-03-06
Abstract: 989, 044. Winding carded slubbings. CARPET MANUFACTURING CO. Ltd. Sept. 30, 1963 [March 6, 1963], No. 8847/63. Headings D1J and D1N. Carding-engine condenser spools are urged against their driving drums by fluid pressure. The stub axles associated with each spool abut against a carriage 14 with which is associated a stud 16 secured to an end of a cylindrical sliding member 18 slidable upon a coaxial guide rod 19 and having its other end secured to a piston rod 21 associated with a cylinder 23 connected by a pipe 24 to an air pressure source.
Patent GB-967432-A (GB)
Title: Improvements relating to regenerative energy absorbing apparatus
Inventor: SMITH BRIAN TURTON
IPC: B66C13/24
Filed: 1960-03-14
Abstract: 967,432. Control of D.C. motors. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. March 14, 1961 [March 14, 1960], No. 8868/60. Heading H2J. To protect metal or crystal diode rectifiers 2 supplying one or more motors 3, e.g. on ship's winches, from excessive inverse voltage or current due to overhauling loads, shunting resistors 41 . . . 43 are sequentially switched in as required by current or voltage sensitive devices. A permanently connected resistor 44 may also be provided. As shown, selectively adjusted current sensitive transductors 51 . . . 53 are used to operate switches 71 ... 73 which may be either mechanical or electronic. The complete control circuits for the transductors are described (Fig. 2, not shown). Alternatively the switches 71 ... 73 may be controlled by voltage sensitive devices, e.g. Zener diodes, connected in parallel with the motors 3. Reference has been directed by the Comptroller to Specification 903,438.
Patent GB-556601-A (GB)
Title: Improvements relating to the manufacture of bis-hydroxyphenyl compounds
IPC: C07C37/00
Filed: 1942-06-27
Abstract: 556,601. Synthetic oestrogenic compounds. BOOTS PURE DRUG CO., Ltd., PEAK, D. A., and SHORT, W. F. June 27, 1942, No. 8872. [Class 2 (iii)] Di-, or tetra-hydroxy-γ-#-diphenyl-n-hexanes or ethers thereof, of low oestrogenic activity are converted into isomeric compounds of high oestrogenic activity by a heat treatment in the presence of an acid catalyst or a noble metal catalyst. This relation between the two isomeric forms is the same as that between the racemic and meso forms of tartaric acid, the form which is of low oestrogenic activity corresponding to the racemic form. In examples (1) Iso-hexoestrol dimethyl ether is heated to 300‹-320‹ C. for 2 hours while a stream of hydrogen sulphide is passed through the molten material. The product is diluted with light petroleum and the highly oestrogenic hexoestrol dimethyl ether crystallises. (2) Isohexoestrol dimethyl ether is heated with palladised charcoal at 300-320‹ C. and worked up as in example (1). (3) Iso-hexoestrol dimethyl ether is heated with sulphur at 280‹-300‹ C. for half an hour. Specification 523,320 is referred to.