baber/WOPTO huggingface dataset:
Patent GB-877964-A (GB)
Title: Improvements relating to monorail installations comprising a cruciform rail
IPC: H02G5/04
Filed: 1959-01-26
Abstract: 877,964. Collectors. TOURTELLIER, M. Jan. 26, 1959, No. 2739/59. Class 38 (1). A cruciform rail 1 for a monorail installation has conductors 6 mounted on either side of the lower part of the centre rib by means of insulating blocks 7 drawn together by bolts 8 to grip the rib between them. The conductors do not project beyond the edges of the cross-piece 3 which forms the track for the running wheels 4 of collectors 5 and load-carrying trolleys. The blocks 7 may also hold in position an inverted T-shaped track 10 for the driving wheel of a self-propelled trolley. Alternatively, such track may be welded to the rail 1 or formed integral therewith. In another construction (Figs. 5-7, not shown) the conductors are enclosed in flexible sheaths on either side of the centre rib of the rail, such sheaths having a narrow slot along which a collector arm of a trolley moves and opens out the sheath as it progresses and allows the sheath to close again behind the trolley. Specification 687,367 is referred to.
Patent GB-547495-A (GB)
Title: Improvements relating to protective shelters for use for example, in air raids
IPC: E04H9/06
Filed: 1941-02-28
Abstract: 547,495. Air-raid shelters. COLLINS, F. E. Feb. 28, 1941, No. 2741. [Class 20 (i)] A bell-shaped metal air-raid shelter of the kind described in Specification 518,165 has the body formed in two detachably connected complementary sheet metal sections there being a door provided in the wall of the cell. The body is formed in two axial sections A, B provided with edge lugs 14 which are joined in abutting relationship by bolts 15. The shelter is provided with a door 1 which can be fastened from inside or outside and is bodily removable, as described in Specification 526,126, and may be further provided with a base in one or two sections and which is removable from inside the shelter, as described in Specification 532,663. The walls of the sections forming the cell may be of hollow construction, as described in Specification 538,144. Specifications 504,642, 525,914 and 527,646, also are referred to.
Patent GB-233397-A (GB)
Title: Improvements in electrical marine propulsion
IPC: B63H23/24
Filed: 1924-02-02
Abstract: 233,397. Railing, A. H., and Kahn, M. L. Feb. 2, 1924. Driving-arrangements for screw propellers.-In marine propulsion systems having alternating current motors and generators for transmitting power to the propeller shafts, a magnetic shunt is provided on the exciter dynamo or booster of the generator the permeability of which is automatically varied by windings energized by the generator load current. The dynamo D energizes the field coils C of the generator B which has field magnets fitted with a magnetic shunt F. The permeability of the shunt is varied by windings F1, F2, F3 carrying the current supplied to the motor A or alternatively carrying a secondary current from a transformer G in the motor circuit. An increase in current decreases the permeability of the shunt and thus strengthens the active field. Alternatively a booster in the field circuit of the generator and either partly or series wound or excited by a winding in parallel with the field winding may be fitted with the magnetic shunt. Similarly the booster may be used in the field of the exciter dynamo.
Patent GB-732397-A (GB)
Title: Method of securing alloys, prepared for sustained cutting power and/or to resist heavy wear or abrasion, to metallic materials
IPC: B23K31/02
Filed: 1953-01-30
Abstract: 732,397. Brazing; welding by pressure or fusion. DEUTSCHE EDELSTAHLWERKE AKT.-GES. Jan. 30, 1953 [Jan. 31, 1952], No. 2762/53. Class 83 (4). Sintered carbide or high-speed steel working elements are welded'or brazed to a carrier element by passing an electric impulse or impulses through the junction between the parts, the resistance of the junction being such that localized heating to brazing or welding temperature is obtained. The parts may be laid directly on one another with light contact or the surfaces to be joined may be roughened to provide small points or areas of contact. Pressure may be employed to assist jointing. Brazing or welding metal powder may be introduced between the surfaces. The brazing powder may be compressed to plate or pellet form or sintered to a porous mass. A mesh of brazing metal wires may be employed and the surfaces may be roughened even if brazing is employed. When a hard metal tip is joined to a steel shank the parts may be preheated. During joining a protective atmosphere of, e.g., hydrogen may be provided. The current impulses may be generated by grid-controlled transformers, impulse transformers or condenser discharges.
Patent GB-1120272-A (GB)
Title: Retreatment of synthetic fibres
Inventor: CHOPRA SOHINDER NATH
IPC: B29C48/793
Filed: 1965-01-21
Abstract: 1,120,272. Recovering fibrous waste thermoplastics. CHEMCELL (1963) Ltd. 21 Jan., 1966 [21 Jan., 1965], No. 2783/65. Heading B5B. Usable feedstock is produced from synthetic thermoplastic resin waste in the form of randomly arrayed fibres by feeding the waste continuously through an extruder from a feed end to an outlet end, and heating the extruder to a temperature sufficient to render the waste tacky, whereby it adheres to the extruder. Specified resins are polyolefins, e.g. polypropylene and polyamides, e.g. nylon. A preferred screw extruder has a vent nearer the outlet than the feed end for allowing escape of vapours and is provided with a monofilament die of circular or rectangular cross-section.
Patent GB-739179-A (GB)
Title: Method of controlling a photo-electric letter-facing machine
Inventor: MULDERS CORNELIS EMILIUS
IPC: B07C3/14
Filed: 1953-01-30
Abstract: 739,179. Applications of luminescence. STAATSBEDRIJF DER POSTERIJEN TELEGRAFIE EN TELEFONIE. Jan. 30, 1953, No. 2789/53. Class 39 (1). [Also in Group XL (b)] The position of a stamp on a letter is detected by means of n coating of a luminescent material provided during manufacture. As shown, letters 2, 3, 4, 5 provided with stamps of this type pass between ultra-violet light sources 6, 7, e.g. mercury lamps. The letters then pass through a narrow tunnel 8 which excludes external light and which is provided with two apertures 9, 10 on each side, a photo-electric cell being situated behind each aperture. According to which cell gives an output pulse as a result of the phosphorescence of the stamp, the letter is directed to the appropriate channel. Three cells are sufficient, the fourth position being considered as the normal. If two cells are used the letters must be turned and passed through the tunnel by a second belt in order to make a further separation. Fluorescent material may be used if filters are provided to prevent the primary radiation affecting the cells.
Patent GB-922711-A (GB)
Title: Improvements in or relating to optical slide projectors
IPC: G03B23/04
Filed: 1959-01-26
Abstract: 922,711. Optical slide projectors. C. BRAUN, and W. BRAUN, [trading as CARL BRAUN CAMERAWERK. Jan. 26, 1959 [Aug. 7, 1958; Sept. 5, 1958], No. 2800/59. Addition to 912,366. Class 97 (1). The optical slide projector of the parent Specification in which a slide plunger is movable transversely to a slide magazine for effecting transfer of slides into the axis of projection and their return to the magazine and the slide plunger is manually operable and also can be connected by a coupling device to a drive member driven by an electric motor for powered transfer and return of the slides, is modified by the provision of a projector cooling fan driven by said motor and of means for drivecoupling the drive member for the slide plunger to the cooling fan motor shaft. As shown, a slide is located in the projection gate. When motor 74 is energized so that the fan 76 is operating and a generator coil in the motor is providing a voltage across lines 213, 231, operation of press button 209<SP>1</SP> energizes relay 106 to pull lever 88 anticlockwise against action of spring 86 and also to pivot lever 81 anticlockwise against a spring 115, thus moving the rim of a friction wheel 78 on the lever against the friction sleeve 77 on the motor shaft. The movement of lever 88 moves arm 89 past a leaf spring 112 which holds it against return. Rotation of the wheel 78 through gears 92, 93, 94, 96 rotates the drive gear-wheel 32 as shown. A crank 30 pivoted on the drive gear-wheel is connected by a link 73 to a reciprocable transport member 22 movable along guides 27 (Fig. la) and returns the slide to the magazine. After 180 degrees rotation of the wheel 32 the flange 57 of an eccentrically mounted cam 56 engages a toothed wheel 58 on a shaft 14 to rotate it one tooth thereby moving the magazine to present the next slide, which on continued rotation of the wheel 32 is fed into the projection gate. On return of the crank 30 into engagement with the lever arm 109, spring 112 releases the arm 89 so that levers 88, 81 return to the position shown until relay 106 is again operated. If the motor 74 fails the slide plunger can still be operated manually by raising a normally disengaged gear-wheel 98 into the position shown to engage gear 94, the gear-wheel 98 having a manually accessible casing 99. The operating button 209<SP>1</SP> and switch 209 for the relay are provided in a switch housing 210 which also contains a press button 208<SP>1</SP> and switch 208 for a motor 207 which through worm 218 and gears 343, 340 causes focusing movement of the projection lens 2. An alternative form of switching is also described in which a single 3-position pole can be caused to energize relay 106, motor 207 or neither. Specification 922,712 is referred to.
Patent GB-1444512-A (GB)
Title: Folding caravan
IPC: B60P3/355
Filed: 1974-01-21
Abstract: 1444512 Folding caravan COMPAGNIE TRIGANO 21 Jan 1974 [1 June 1973] 02832/74 Heading B7B A folding caravan comprises a body 1 fixed to a chassis having wheels 2 and a tow bar (not shown). Platforms 7 and 8 are pivoted on the body 1 on pivots 3 and 4 to open transversely of the body 1 for support by feet 9 and 10. A pivoted frame comprising four hoops I, II, III, and IV supports a tent having sections a, b, c, d e. The hoops III and IV are coupled at each side to platform 8 through links 17, 18 and 19. Lever 17 is pivoted by a pin 20 to a bench 16 and by a pin 23 to the link 18. Opening of the caravan is effected by opening platform 7 to open hoops I and II until hoop II contacts an abutment (31) Fig. 5 (not shown). The platform 8 is opened in a similar manner with the pivot point 24 describing a curved trajectory to permit opening of the hoops III and IV.
Patent GB-795133-A (GB)
Title: Improvements in or relating to the flame-proofing of viscose products
IPC: D06M11/46
Filed: 1955-01-31
Abstract: Flame-resistant viscose cellulose material is made by producing a viscose regenerated cellulose product containing a minor proportion of cellulose substituted by a carboxy methyl, glycerol ether or carboxy ethyl group, and treating it with a compound of a metal which has flame-proofing properties (see Group VIII).  The modification of the viscose product may be effected by adding carboxymethyl cellulose or the glycerol ether of cellulose, produced by reacting cellulose swollen in glycerol monochlorhydrin with alkali, to the viscose before spinning, by partial carboxy methylation of the original cellulose, e.g. by treatment with monochloracetic acid and alkali, or by treatment of the viscose with acrylonitrile.  Tetraethyl orthosilicate may be added to the viscose.  Besides fibres, other articles, such as film and flexible sheet, may be treated.  U.S.A. Specification 2,489,651 is referred to.
Patent GB-574675-A (GB)
Title: Apparatus for determining the direction of reflecting objects by means of electromagnetic waves
IPC: G01S19/48
Filed: 1942-03-06
Abstract: 574,675. Wireless direction-finding apparatus. STANDARD TELEPHONES & CABLES, Ltd. March 6, 1942, No. 2993. Convention date, March 8, 1941. [Class 40 (v)] Apparatus for determining the direction of an object by the reflection from it of electromagnetic waves comprises radiating and receiving antenna systems, one of which has a symmetrical directive field pattern and is arranged to oscillate about a mean axis, the direction of which is variable, a cathode-ray oscillograph, and means for deflecting the oscillograph beam in one direction of coordinates in response to the received signals and in the other in synchronism with the oscillation of the directive field pattern, the last means being such that for each half oscillation of the field pattern on either side of the mean axis a diagram is produced, the two diagrams becoming more similar and finally coinciding as the mean axis is adjusted to the direction of the reflecting object. As shown, a transmitting antenna 51 having a symmetrical radiation pattern is carried on an orientable platform 52 and is oscillated by a motor so that the axis of the pattern oscillates between positions 2, 3 about a mean position 5. The slider 7 of a potentiometer controlling the potential of the horizontal deflecting plates of a cathode-ray oscillograph is moved in synchronism with the radiation system, the vertical deflections being produced by the output of a receiver fed by an omnidirectional aerial with the reflected signals. The potentiometer is fed at its mid-point and a counter E.M.F. is produced in the circuit across a resistance 9, with the result that the beam makes an oscillation from one side to the centre and back again for each half oscillation of the radiation pattern on one side of the mean axis. In this way two curves 12, 13 on one side of the vertical axis are produced, the former being a reversal of the continuation 14 of the curve 13 which would occur if the deflecting voltage produced by the potentiometer were not reversed owing to the centre-tap connection. When, by manual orientation of the platform 52, the direction of the mean axis of oscillation 5 of the transmitting antenna is brought into coincidence with that of the reflecting object, the two curves 12, 13 become similar and coincide. In a modification, the curves 12, 13 are interrupted in complementary manner, so that when they are correctly superposed the remaining portions join up to form an unbroken curve. For this purpose, the radiated beam may be. split into a number of spaced narrow beams, or the receiver may be intermittently blocked by the action of a contact moved over a bank of contacts in synchronism with the oscillation of the radiation diagram.
Patent GB-305139-A (GB)
Title: Method of and apparatus for producing electrolytic deposits on bodies
IPC: C25D17/00
Filed: 1929-01-30
Abstract: 305,139. Poulverel, A. Jan. 31, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Metals, depositing; electrodes; diaphragms.- An anode for use in the deposition of metals comprises hollow bars a mounted between a pair of hollow curved arms 2, Fig. 4, connected by hollow arms 7 to trunnions 8 by which a heating fluid is supplied and withdrawn. The trunnions are oscillated through gearing by pulleys 10. The articles to be plated are suspended within the anode frame from an overhead bar to which an oscillatory movement of variable frequency and amplitude may be imparted. Noxious fumes are removed from above the bath by tubes 3 connected to an exhaust pipe provided with a suction fan and a trap for condensed fumes. In a modification the anode is heated but stationary. In another modification, Fig. 7, the anode comprises hollow vertical rods 2 mounted on a rotating hollow cvlindrical frame on which soluble anodes 2<1> are also mounted. The cathode 5 is rotated in the opposite direction by means of a crossed belt 6. The anode and cathode may be separated by a permeable or semi-permeable or osmotic or semi-osmotic diaphragm. An insulating screen having apertures arranged to produce a varying deposit at different points of the cathode may also be provided, and may be combined with a dia. phragm. The invention is applicable to the depostition of silver from a silver cyanide solution and chromium from a bath of chromic acid, and also to the deposition of nickel; soluble anodes may be employed in each case.
Patent GB-162406-A (GB)
Title: Improvements relating to vessels or boats
IPC: B63H1/04
Filed: 1920-02-02
Abstract: 162,406. Royer, E. E. Feb. 2, 1920. No Patent granted (Sealing fee not paid). Driving-arrangements for paddle wheels; paddle wheels.-In ships or boats supported and propelled by cylindrical floats f provided with vanes h, the height of the shell a relatively to the floats is adjusted by scr.ews k which bear upon the arms i mounted on a common axis j. The floats are driven through chain gear from a motor b and a rudder l is provided.
Patent GB-266690-A (GB)
Title: Improvements in and relating to electric oscillation generators
IPC: H03B5/34
Filed: 1927-02-04
Abstract: 266,690. British Thomson-Houston Co., Ltd., (Assignees of Hull, A. W.). Feb. 26, 1926, (Convention date]. Thermionic generators and amplifiers.-A piezo-electric element 2, shunted by a leak resistance 19, is connected between the cathode and the control grid 12 of the valve 3 for predetermining the frequency of the grid potential variations, and the impedance 2 in the plate circuit is such that the plate circuit is tuned to a frequency higher than, e.g. double, the predetermined frequency. The impedance 22 is kept as low as possible, consistently with the maintenance of oscillation in the valve 3; and the valve is given a high mutual conductance by employing a space-charge grid 11 maintained at a positive potential. The oscillator is coupled by a capacity 5 to the grid circuit of an amplifier 4, the plate circuit 9, 24 of which is tuned to the predetermined frequency and is coupled to an output circuit 8. To prevent back action of the plate circuit 9, 24 on the prime oscillator 3, a screen grid 16, maintained at a positive potential, is interposed between the plate and grid of the amplifier.
Patent GB-1116602-A (GB)
Title: Electric circuit breakers
Inventor: ATHERTON THOMAS GEOFFREY FENTO
IPC: H01H71/10
Filed: 1965-01-26
Abstract: 1,116,602. Automatic circuit breakers. DORMAN & SMITH Ltd. 10 Jan., 1966 [26 Jan., 1965], No. 3290/65. Heading H1N. A polyphase circuit breaker of the kind described in Specification 1,116,601, having a plurality of parallel connected contacts, is assembled from a plurality of smaller single or multipole circuit breakers. As shown three three-pole circuit breakers are coupled together by the device described in Specification 1,116,601, for conjoint operation and the terminals of each small breaker are connected together by a conducting plate to which cables 46, 47 can be connected. Coupling bars (33), (Figs. 3-5, not shown) extending between each adjacent pair of small breakers cause all the contacts to be tripped open upon an overload current flowing through any one pair of contacts. The couplng bars (33) carry arms (37) spring-biased into engagement with the releasable arms (19) (Fig. 4) of each small breaker so that when the arms (19) are released the bars (33) pivot to drive rods (39) to tilt the common trip bars (21) of each small breaker. Each pole of each small breaker is generally similar to those described in Specification 1,116,601.
Patent GB-842210-A (GB)
Title: Improvements relating to high voltage electrodes
Inventor: JAMES RONALD EDWARD
IPC: G01D5/16
Filed: 1957-01-30
Abstract: 842,210. Electric tests. BRITISH THOMSON-HOUSTON CO. Ltd. Jan. 16, 1958 [Jan. 30, 1957], No. 3309/57. Class 37. In the high voltage testing of insulating material between electrodes 1 and 9, electrode 1 is discshaped and is located by a stem 8 in the mouth 6 of a cavity in an insulating block which has an internal metallised coating so shaped as to produce a uniform field free from edge effects at the electrode and is connected to the electrode. The block is in two parts 3, 4. Specification 822,203 is referred to.
Patent GB-100627-A (GB)
Title: Improvements in Safes for Perishable Articles.
Inventor: SUTTON JOSEPH WALTER
IPC: A47J41/00
Filed: 1916-03-06
Abstract: 100,627. Sutton, J. W. March 6, 1916. Lined boxes.-A safe for perishable articles is constructed of a base A, four corner posts, four side frames C secured to the posts, and an internal channelled metal receptacle E. Between the frames and the receptacle are a packing F of insulating-material, preferably compressed cork, and panels G of three-ply wood. Fillets I are screwed on the top of the safe, and a lid J is hinged thereto, the lid having an insulating-layer L and a metal sheet M.
Patent GB-425256-A (GB)
Title: Recording and reproduction of electrical impulses
IPC: H03G3/20
Filed: 1934-02-01
Abstract: 425,256. Recording and reproducing music &c. RADIO CORPORATION OF AMERICA, 30, Rockefeller Plaza, New York, U.S.A. Feb. 1, 1934, No. 3366. Convention date, Feb. 1, 1933. [Class 40 (iv)] The volume range of sounds is compressed during recording, the amount of control being represented on the record by the amplitude of a pilot frequency outside the audible range superposed on the audio-frequencies. During reproduction, the pilot frequency is separated out and is used, in accordance with its amplitude, to expand the volume range to its original extent. The volume of sound and pilot currents during recording may be controlled manually by potentiometers as in Fig. 1, (not shown), but as shown in Fig. 3 the control is automatic. The recording channel comprises transformer 35, amplifier 36, filter 41, amplifier 14 and recorder 11 which may be of mechanical, optical or other type. A control frequency say of 20 cycles is injected from 15 into the channel over an amplifier 43 and low-pass filter 48. Voltages according to the sound level at transformer 35 are applied to amplifiers 51, 53 and then rectified at 55, smoothed at 57 and used to control the grid bias of the amplifiers of both the sound channel and control frequency channel so that low volume levels corresponding to say below 30 per cent of the maximum recording level are boosted up above the noise level and high volume levels corresponding to say above 90 per cent of the maximum recording level are reduced, 10 per cent of the record track being reserved for the pilot frequency which is controlled simultaneously with the sound levels. In reproducing, Fig. 2, the sound and pilot frequencies are separated by filters 23, 29, the sound currents being amplified at 25 and fed to reproducer 28. The pilot current is rectified at 30, smoothed and applied to a bias resistance 281 in amplifier 25 so that the volume range is restored. The separation of the sound and pilot frequencies may be effected electromechanically as shown in Figs. 7 and 8. The pick-up 70 operates in the usual manner in response to the recorded sound and a tuned vibrator responding to pilot frequency is mounted on the tone arm 71. The vibrator comprises an adjustably weighted armature 77 mounted on resilient supports 78 carried by a magnet 76 secured to the tone arm, control frequencies being generated in coil 80 carried by armature 77.