baber/WOPTO huggingface dataset:
Patent GB-1259175-A (GB)
IPC: H01S3/098
Filed: 1969-05-08
Abstract: 1,259,175. Lasers. WESTERN ELECTRIC CO. Inc. 8 May, 1969 [13 May, 1968], No. 23532/69. Heading H1C. Transverse mode locking and beam-scanning is achieved in a laser by phase modulating the laser beam with a travelling wave of change of index of refraction propagating in the laser cavity 12, 14 transversely at a frequency equal to the transverse mode separation frequency. The phase modulator 15, Fig. 2A, comprises an electro-optical KDP crystal 16 provided with a plurality of electrodes on opposite faces connected in pairs at periodic points across a transmission line 18 driven by signal source 20 whereby a travelling electric field normal to the direction of propagation 17 of the laser beam is produced across the crystal 16. The travelling electric wave produces a travelling wave of change of index of refraction which propagates in the crystal and thereby phase modulates the light beam passing therethrough. By making the frequency of source 20 equal to the transverse mode separation frequency phase locking is achieved characterized by an elongated region of energy extending between the cavity reflector mirrors 12, 14 forming a spot of coherent light on the reflectors. Since the elongated region oscillates transversely in the resonator in step with the transversely varying index of refraction the spot scans the reflectors. In an alternative arrangement a standing wave is created in the crystal 16 by employing an additional signal source 24 which also produces a field at the transverse modeseparation frequency. The modulation may be acoustic by converting the applied electric field to an acoustic wave, Fig. 2C (not shown), by a transducer coupled to one end of the crystal 16. Both the longitudinal and transverse modes may be phase locked simultaneously by designing the cavity such that the longitudinal mode separation is an integral multiple of the transverse mode separation, the energy distribution in this case being a pulse of energy which bounces back and forth between the reflectors in a zig-zag path in both a longitudinal and a transverse direction simultaneously, Fig. 1D (not shown). Two dimensional scanning may be provided by using a pair of mutually orthogonal phase modulators.
Patent GB-1265243-A (GB)
IPC: H04N3/08
Filed: 1970-05-12
Abstract: 1,265,243. Light pointers. NATIONAL CASH REGISTER CO. May 12, 1970 [May 19, 1969], No. 22918/70. Heading G2J. An optical scanning apparatus comprises beam deflecting means 10 mounted for movement about an axis for deflecting an incident light beam 6 away from an incident plane 30 which contains the axis, and redirecting means 80, 16, 18, 82 for redirecting the deflected beam across the incident plane 30 and bringing it back into incidence with the beam deflecting means. The re-reflected beam 22 is thereby deflected through a greater angle with respect to the incident plane than the reflected beam 12. The beam deflecting means comprises an oscillatable mirror 10 at the focal point of lenses 80, 82 which together with mirrors 16, 18 comprise the redirecting means. In another embodiment, Fig. 1 (not shown), the redirecting means includes a dove prism (14) interposed between the lens 80 and the mirror 16, which deflects the beam across the plane of incidence 30. In a further embodiment, Fig. 4 (not shown), a bunch of optical fibres (15) replaces the mirrors 16, 18 and includes fibres criss-crossed so that light is returned to the opposite side of the incident plane. The light beam may be a laser beam and the beam deflection means may be a rotatable plane polygonal sided mirror or a glass prism. The beam may be directed a third time on to the beam deflecting means after suitable shift across the incident plane to give an even greater angle of deflection.
Patent GB-1265449-A (GB)
IPC: H01H43/10
Filed: 1970-06-22
Abstract: 1,265,449. Ratchet mechanisms. SIEMENS A.G. 22 June, 1970 [21 June, 1969], No. 30280/70. Heading F2Q. Intermittent stepped rotation of a rotor 3 is effected by pawls 5, 6 carried by a reciprocating driving member 9 in accordance with the relative angular position of a control rotor 2 located between the pawls 5, 6 and the rotor 3. The rotor 3 carries a continuous outer row of teeth 4, adapted to be engaged by pawl 6, and an interrupted inner row of teeth, adapted to be engaged by pawl 5. The control rotor 2 has a row of teeth 1 adapted to be engaged by both pawls 5, 6, a hole 10 through which both pawls 5, 6 are adapted to pass and holes 11, 12 through which only pawl 5 may pass. Thus the rotor 3 is driven only when pawl 5 passes through aperture 10, 11 or 12 to engage one of the teeth in the interrupted row, or when pawl 6 passes through aperture 10 to engage one of the teeth in the outer row 4. In a modification, a control rotor 2 carries pawls 13 ... 16, Figs. 3 and 6, which are adapted to engage teeth on a rotor 3 under the influence of cams 18 provided on a fixed member 17. The pawls 13 are hammer-shaped, made of resilient plastics material, and moulded on to the rotor 2. They are spring-loaded on both sides. In a modification, each pawl 19 is formed by stamping and is mounted on a pin 20, Fig. 8, the necessary biasing being effected by gravity.
Patent GB-1290866-A (GB)
IPC: F24V30/00
Filed: 1969-09-26
Abstract: 1290866 Hot gas engines N V PHILIPS GLOEILAMPENFABRIEKEN 26 Sept 1969 [30 Sept 1968] 47435/69 Heading F1S In a hot gas engine comprising a reaction vessel 17 containing a metal or a mixture of metals which is liquid at the operational temperature and a reservoir 21 containing a supply of a liquefied oxydizing agent, the engine cooler 7 is connected to a duct 30 which is arranged in heat exchange relationship with the reservoir. In a modification (not shown) there are two reservoirs containing the oxydizing agent.
Patent GB-1295102-A (GB)
IPC: H02P25/08
Filed: 1970-03-26
Abstract: 1295102 Electric motors; control of motors FORD MOTOR CO Ltd (Ford Motor Co) 26 March 1970 14973/70 Headings H2A and H2J A reluctance motor as shown in Fig. 1 of Specification 1,240,979 is energized from a D.C. source by a power circuit arranged to boost the winding current periodically after the current has decayed by free-wheeling through the winding. The circuit includes commutating thyristors, as shown; or transistors, controlled in dependence on rotor position. Fig. 3 shows the winding 20 of one phase. As the rotor and stator segments begin to move into alignment current is passed through thyristors 120 and 134 to charge capacitor 136. The charge is then reversed by triggering thyristor 140. Capacitor 124 is similarly charged and its charge reversed. Motoring current is then passed through the winding by triggering thyristors 120 arid 132. Thyristor 120 is then turned off, after the winding current has reached a predetermined value determined by the desired torque, by triggering thyristor 122 to discharge capacitor 124 through the winding. The winding current then freewheels through thyristor 132 and diode 130. Capacitor 124 meanwhile recharges and its charge is reversed by triggering thyristor 128. At a predetermined winding current value, the current is boosted by again discharging capacitor 124 through the winding. The free-wheeling and boosting modes of operation may be repeated as often as desired. When the corresponding rotor and stator segments are aligned, the phase winding current is rapidly reduced to zero by switching off thyristor 132, by triggering thyristor 134 to discharge capacitor 136 through the winding, and so allowing the winding current to flow back to the D.C. source 90 through diodes 130 and 142. The motor may be braked by operating the power circuit as the rotor and stator segments move out of alignment. The motor is reversible. Fig. 5 (not shown) depicts a three-phase power circuit wherein the capacitors 124 and 136 are common to the individual phase circuits.
Patent GB-1296022-A (GB)
IPC: B24B31/02
Filed: 1970-02-04
Abstract: 1296022 Tumbling C K WALTHER [trading as CARL KURT WALTHER GmbH & CO KG] 4 Feb 1970 [24 May 1969] 5415/70 Heading B3D [Also in Divisions B1 B2 and F2] Apparatus for polishing, crushing, &c. includes a vessel 2 rotatable simultaneously about two intersecting axes x-x, y-y in bearings 7, 7<SP>1</SP>, 24, one of which 24 lies adjacent a neck portion 20, Fig. 5, the vessel 2 being provided with a lid 19 and a spider member 30 for clamping the lid 19 in the closed position, which spider member 30 is engageable with slots 26 of a web member 23<SP>1</SP> to retain the lid 19. A frame 3 mounts the bearing 24 through a support ring 5 and also supports a thrust bearing 4, the frame 3 being rotatable in the bearings 7, 7<SP>1</SP>. A drive pulley 8 is driven by a main motor (10), Fig. 2 (not shown), through a belt (9), to rotate the frame 3, a belt 14 passing over a transmission 11 held stationary on a frame-mounting shaft 6 to transmit rotation to the vessel 2 via a pulley 15 and gear wheels 17, 18. An auxiliary motor (13) for driving the transmission 11 through a bolt (12) allows rotation of the vessel 2 while the frame is held stationary. The lid 19, Fig. 4 (not shown), includes lugs 27 for engagement in slots 26, see also Figs. 6-8 (not shown), of the retaining member 23<SP>1</SP> to form a bayonet joint, arms 28 of the member 30 also engaging the slots 26, while a nut 32 screwed to a stud 34 of the lid allows securing of the closed lid 19. Fork like projections 30<SP>1</SP> of the member 30 engage ribs 19<SP>1</SP> of the lid to prevent relative rotation. A cover 36, restrains escape of material from the vessel on opening, and protects the operator from any vapour emerging under pressure, and grooves 25, 25<SP>1</SP> co-operate with the support ring 5 to provide a further sealing effect.
Patent GB-1296866-A (GB)
IPC: B65G47/82
Filed: 1970-02-16
Abstract: 1296866 Transferring sweets between endless conveyers OTTO HANSEL GmbH 16 Feb 1970 [14 March 1969] 7264/70 Heading B8A In apparatus for delivering articles 12 from a plurality of adjacent delivery channels 1-5 to conveyer means comprising a conveyer 20 travelling across the ends of the delivery channels for further conveying the delivered articles in single file, one article at a time is transferred to the cross conveyer from each delivery channel succession, beginning at the delivery channel that is last (i.e. the most downstream) in the direction of travel of the conveyer 20. The latter advances a given distance between the instant of accepting an article from one delivery channel and the instant of accepting a further article from the next delivery channel, and after the article from the first (i.e. the most upstream) of the delivery channels has been transferred, the next row of articles from the delivery channels does not begin to be transferred until the article received from the first channel has been conveyed by the conveyer 20   past the last delivery channel. The articles 12 are transferred by the action of a series of paddle-like members 29 which radiate from a rotary member 28. There is a paddle 29 respective to each channel 1-5 and they are disposed helically around the member 28. Each row of articles 12 arriving at the downstream end of the channels 1-5 is forwarded into the zone of the paddles 29 by the action of a reciprocating pusher 26. As shown, the conveyer 20 comprises pushers 23 respective to each article. The pushers may be replaced by grippers. The articles 12 may be forwarded in the channels 1-5 by two belts conveyers 15, 19, in series the conveyer 19 separating the articles by running at a faster speed.
Patent GB-1302736-A (GB)
IPC: C06D3/00
Filed: 1970-03-24
Abstract: 1302736 Smoke - producing projectiles LINDESBERGS INDUSTRI AB 24 March 1970 14315/70 Heading F3A [Also in Division C1] A smoke or gas producing composition comprises a smoke or gas producing liquid mixed with a porous absorbent powder consisting of grains all of which are smaller than 6 mm., but at least 85% by weight of which are larger than 0À125 mm. Preferably the grains are of non- uniform size and are jagged in shape and porous, the powder being free from absorbed gases and moisture. The liquid may be added to the powder under vacuum. Suitable absorbent material is powdered carbon, calcium silicate clinker, and volcanic ash. Smoke and gas producing liquids referred to are titanium tetrachloride, silicon tetrachloride, chlorosulphonic acid, and stannic chloride. The composition may be used in spin-stabilized grenades, rocket heads, or bombs.
Patent GB-1303503-A (GB)
IPC: G02B27/00
Filed: 1970-05-07
Abstract: 1303503 Optical display apparatus PILKINGTON PERKIN - ELMER Ltd 15 July 1971 [7 May 1970] 22028/70 Heading G2J An optical display system has a primary optical axis 2 along which light can travel towards an observer E, a beam-splitter 5 positioned on the primary optical axis and having a partially reflecting interface 6 and a front face 5A downstream, as considered in the direction of travel of light along the optical axis 2, and a display source 7 positioned off the primary optical axis and so that light therefore enters block 5, is internally reflected from front surface 5A, then reflected from interface 6 along the optical axis. Lenses 4,4' collimate the light. This arrangement may be incorporated into a head-up display, with primary source 1, e.g. cathode-ray tube, and secondary source being projected into the field of view, either singly or together Fig.2 (not shown).
Patent GB-1318105-A (GB)
Title: Apparatus for carrying and straightening electrolytic anode plates to be installed in an electrolytic cell
IPC: H01M4/04
Filed: 1970-06-02
Abstract: 1318105 Making electrolytic anode plates MITSUBISHI KINZOKU KOGYO KK 2 June 1970 26517/70 Heading B3A [Also in Division B8] Apparatus for conveying and straightening electrolytic anode plates 1 comprises means for receiving batches of cast plates and spacing them at regular intervals, means for conveying the plates to a straightening section which removes distortion and casting flash, and conveying means for removing the straightened plates from the apparatus. A stack of anode plates 1 is recieved on a stand 2, Fig. 1, which is lowered by a jack 3 to allow lugs B to engage a conveyer 4. Fig. 2. Each plate is taken to a frame 5 and lifted off by hooks 10 which are actuated by a jack 9. A jack 8 aligns the plate with a truck 11, which runs on a rail 12. The rail is lowered by a jack 13 and the truck is moved to place the plate between a platen 16 and a cross-head 17, Fig. 1. Jacks 18 place the plate 1 on the platform, which is provided with a protrusion (19) to align the plate, Fig. 4 (not shown), and the cross-head is advanced to correct any distortion in the plate and remove casting flash by pressing it against the platen. Jacks 20 on the platen then remove any distortion in the lugs B. The jacks 18, 20 are withdrawn and the straightened plate is stripped from the platen by a jack 21. The truck 11 then places the plate in alignment with a conveyer 29, on which it is placed by hooks 28 of a jack 27 mounted in a frame 23. The plates are stacked on a stand 30 and are unloaded from the apparatus into a known device for installation in an electrolytic cell. In alternative apparatus, Fig. 9, the stack of cast plates is received on a stand 32, which lowers them until their lugs engage a conveyer 33, for transfer to a conveyer 34. The plates are advanced to a pair of beams 35, which are moved cyclically by a rotational mechanism acting on end plates C of the beams. The beams advance the plates step-by-step, finally lifting them off the conveyer 34 and placing them on pawls d of a conveyer 36. Each plate is lowered in turn into alignment with a platen 38 and a cross-head 39 is advanced by an hydraulic cylinder 40. A protrusion e on the cross-head aligns the plate correctly and pneumatic hammers 41 act on the plate to straighten it as well as remove distortion from the lugs and remove the casting flash. The straightened plates are placed on a conveyer 42, which transports them to a storing lot 44, via a further conveyer 43. They are lifted off the latter by a crane for installation in a electrolytic cell.
Patent GB-1318785-A (GB)
Title: Couplings
IPC: E06B3/82
Filed: 1970-05-16
Abstract: 1318785 Flexible shaft couplings DUNLOP HOLDINGS Ltd 18 May 1971 [16 May 1970] 23811/70 Heading F2U A flexible shaft coupling 10 comprises two rigid members 11, 12 (e.g. made from sheet metal) each comprising a base portion normal to the rotation from which extend axially two arms 13, 14 arranged to loosely fit between the arms of the other member, there being between each pair of adjacent arms 13, 14 a torque transmitting elastomeric element 23 having a groove or recess 24 to allow a predetermined angle (e.g. 38) of substantially free rotational play between the members. The element 23 may be formed by casting it between the members 11, 12 in a mould having inserts to provide the recesses 24.
Patent GB-1326803-A (GB)
Title: Metal laminate structures
IPC: C09J5/00
Filed: 1970-08-11
Abstract: 1326803 Laminates INTERLOCKING SYSTEMS INTERNATIONAL Ltd 11 Aug  1970 38675/70 Heading B5N A metal laminate comprises two metal sheets bonded face-to-face by a rubber-type adhesive  which has been cured in the range of 90 to 95% of full curing, the adhesive containing voids in each square centimetre thereof between the sheets. In producing the laminate of the invention a sheet 10, e.g. of steel is fed past adhesive spraying apparatus 13 through a curing oven 14 and through the nip of rollers 16 and 17 where it is contacted with a metal foil sheet 18 which has been fed past adhesive spraying apparatus 13a and through oven 14a. The adhesive which preferably comprises an elastomer, e.g. polychloroprene, a phenolic resin and a solvent is preferably sprayed in a latice pattern. The ovens 14 and 14a comprise three groups of heaters 52, 53, 54 having differing heat intensity and duty cycles.
Patent GB-1330348-A (GB)
Title: Surface cleaning device
IPC: A47L1/16
Filed: 1970-11-27
Abstract: 1330348 Window cleaning devices; reservoir squeegees B E WOOLF 27 Nov 1970 56497/70 Headings A4F and A4K [Also in Division F1] A device for cleaning and/or de-icing a window or like surface comprises a container 1 for holding a cleaning or de-icing liquid associated with a manually operated pump, valve, or other means for applying the liquid to the surface to be cleaned or de-iced, and a cleaning and/or deicing head 5, attached to the container and comprising a rubber squeegee 11 and a rigid plastics ice scraping blade 12. The latter are carried by fins 4 integral with a cap 3 secured to one end of the container 1. A pump within the container 1 has a plunger 8 and piston 15 manually operated by repeatedly depressing a nozzle unit 9 through which liquid is discharged. The piston 15 is moved downwardly within a cylinder 14 against the action of a spring 16 which urges a ball valve 18 to close a passageway 17 for conducting liquid from the container 1 into the cylinder 14. On release of the nozzle unit 9 when at its lowermost position the piston 15 is moved upwardly by the spring 16 to draw liquid into the cylinder 14 past the ball valve 18. On the next downward stroke this liquid is forced through the piston 15 past a ball valve 23 into the plunger 8 which is filled on repeated operation so that liquid eventually discharges through the nozzle unit 9. (For Figures see next page)
Patent GB-1331813-A (GB)
Title: Blanks for containers and containers made therefrom
IPC: B65D5/489
Filed: 1971-05-28
Abstract: 1331813 Knock-down compartmented containers LINPAC CONTAINERS Ltd 14 April 1972 [28 May 1971] 18196/71 Heading B8P Compartments are formed within a container erected from the blank shown by flaps 11 cut from one side panel 2 and hinged to the adjacent side panels 1, 3 by triangular comer pieces 12, 13. The container is formed in a collapsed condition by folding inwardly the end panels 8, 9 with the flaps 10 folded back on the panels 9, folding the blank along the crease line between panels 2 and 3, and adhering the glue flap 5 to the panel 1 and the flaps 10 to the adjacent panels 8. The container is erected by pushing inwardly the longitudinal sides whereupon the panels 8, 9. open out to close the container ends, and folding inwardly the flaps 11.
Patent GB-1333062-A (GB)
Title: Lock actuators for fluid pressure operated braking systems
IPC: F16D65/22
Filed: 1970-01-14
Abstract: 1333062 Lock actuators CLAYTON DEWAXDKE CO Ltd 13 Jan 1971 [14 Jan 1970] 1856/70 Heading F2F A fluid pressure lock actuator comprises a piston 45 displaceable by fluid pressure introduced through a port 50, the thrust of which piston 45 is transmitted to an output piston 43 initially through a bank of disc springs 48 and, then after a predetermined clearance has been taken up, through the abutment of a shoulder portion 64 of the piston 45 and a skirt 46 of the piston 43; the actuator also incorporates a fluid pressure released roller and wedge locking device 49 operable to lock the piston 43 in a brakes applied position, the device 49 being displaceable with the piston 45 but also being capable of a limited degree of movement relative thereto. The actuator may be incorporated in a compressed air system but, as shown and particularly described, the actuator is used in an hydraulic system for the control of an internal shoe drum brake; the actuator includes a further piston 42 movable by hydraulic pressure from the port 50 and the pistons 42, 43 have abutment means 42a, 43a for engagement with opposed brake shoes. The piston 42 has an axial stem 44 upon which is slidingly disposed the piston 45; a thrust ring 47 embodying device 49 is located in a counterbore 61 in the piston 45 and the counterbore 61 is closed by a thrust washer 62. Under normal operative conditions pressurization via the port 50 of the space between the pistons 42 and 45 moves the pistons 42, 45 apart and causes outward movement of the piston 43 to the position of Fig. 2; there now exists a clearance e between the locking mechanism 49 and the thrust washer 62. To lock the "brakes on" pressure is depleted from the device 49 and pressure is relieved from the space between the pistons 42, 45 so that the locking mechanism 49 will become operative by reaction with the stem 44. When the hydraulic braking pressure is relieved, a degree of relaxation occurs within the unit and the piston 45 moves to the left to establish a clearance f between the piston 45 and the skirt 46 (Fig. 3). When it is required to release the locking mechanism 49, the piston 45 may be moved relative to the piston 43 to cause the device 49 to disengage and in this manner it is possible to ensure release of the brakes in spite of "cooling on" of the drum.
Patent GB-1337108-A (GB)
IPC: H02P25/26
Filed: 1969-08-22
Abstract: 1337108 Control of A.C. motors J F NYBOM 16 Nov 1970 [22 Aug 1969 (2)] 41874/69 and 41968/69 Heading H2J The stator 1 of an induction motor is energized from a source RST at fixed frequency and its rotor 3 from controlled rectifiers 2 at a frequency which is determined either by a separate oscillator 5 or by signals derived from measurements of rotor voltages and currents via unit 7. Initially, the oscillator 5 is set to the supply frequency and no torque is produced; the frequency of the oscillator is then increased or decreased according to the desired direction of rotation and by an amount such that a desired speed of rotation occurs, at which the frequency of the voltage supplied to the rotor is equal to the frequency induced in the rotor by the stator currents (i.e. slip frequency). The phase angle between these voltages depends upon the load; if this is excessive so that the rotor may pull out of step, a switch 6 is changed over and triggering of 2 takes place at the frequency derived from the unit 7 and at a phase angle such that maximum torque is produced. In alternative embodiments (Figs. 3, 4, not shown) the oscillator 5 is additionally controlled by a "current limiter" (10), i.e. a device responsive to the rotor current, which increases the frequency with increasing load. Figs. 3 and 4 also have an inverter connected to the rotor whereby rotor current can be fed back to the supply, in Fig. 3 via the stator and in Fig. 4 via a transformer. The use of the frequency control for braking is mentioned.