baber/WOPTO huggingface dataset:
Patent GB-832528-A (GB)
Title: End stop circuit for servo systems
IPC: G05D3/12
Filed: 1956-10-11
Abstract: 832,528. Servo systems. COLLINS RADIO CO. Oct. 11, 1956 [Jan. 4, 1956], No. 31054/56. Class 40 (1). [Also in Groups XXXV and XL (c)] An end-stop circuit for a servo system comprises an impedance connected between the input and output terminals, a controllable impedance between the output terminal and ground, and a source of A.C. having the same frequency as that of the error signal and a predetermined phase relationship therewith, so that when the servo motor reaches the limits of its travel the A.C. is applied to the controllable impedance network to short the error signal to earth. The end-stop circuit is preferably included before the point where rate feedback is introduced as in this way the motor is rapidly brought to rest. The circuit can also be applied to systems in which there is no physical motion and the limits are voltage levels. In Fig. 1 the resistor 12 is connected between the input terminal EI and the output terminal E0, and the diode bridge forms the controllable impedance. Provided that the voltages of the bias batteries 19 and 21 exceed the peaks of the (alternating) error signal the diodes remain non-conductive and do not appreciably attenuate the signal. If. desired, the bias can be adjusted to reduce the amplitude of the error signal. The A.C. source 23 is of the same frequency and phase as the error signal so that an in-phase or out-of-phase signal is applied to the control terminal EL whenever one of the two limit switches 10 and 11 is closed. The diodes 28, 29 clip the waveform to produce square waves of amplitude equal to the voltage of the battery 28. These square waves are applied to the terminals A, B, and as their amplitude is more than twice that of each bias voltage these terminals are held at earth potential during the respective half-cycles. If the error signal is out-of-phase with the square waves it will then be shorted to earth and the servomotor (or other responsive device) will come to rest. When the error signal is reversed,in phase it will no longer be shorted and the system will return in the opposite direction to the end of its travel until the other limit switch closes. During the normal motion of the system neither switch will be closed and no square waves will reach EL. In a modification (Fig. 3, not shown), the square wave is obtained from a battery and vibrator, the contacts of the latter being switched by an A.C. of the appropriate frequency and phase. A further modification (Fig. 4, not shown) has the bridge circuit biased from a single battery across which is shunted a centre-tapped resistor, one side of the battery being earthed.
Patent GB-324136-A (GB)
Title: Improvements in or relating to automatic clutch-operating mechanism for motor vehicles
IPC: H05K9/00
Filed: 1928-10-26
Abstract: 324,136. Briggs, G. F. Oct. 26, 1928. Controlling different functions by same lever; controlling - apparatus, arrangements of foot and transmission gear in conjunction with; pneumatic transmission.-In automatic clutchoperating mechanism for motor vehicles, of the kind employing a piston and cylinder connected to the engine induction manifold through a valve actuated by the throttle-control, the piston and clutch pedal are connected by a chain or like flexible means. As adapted to an " Austin Seven " car, the clutch pedal 18 is connected by an arm 16 and chain 15 to the piston rod 11, the cylinder 9 having a dashpot vent 13 and communicating by a pipe 19 with a valve body 21, which is mounted on an adaptor 39 secured to the inductionmanifold flange 40. The piston valve 22, provided with straight and rightangled ports 24, 23, has a forked end 25 connected to a rod 28 and is positioned in the body 21 by a pin 26, on which bears a return-spring 27. The throttle pedal 33 is connected by a link 32 to a pivoted arm 31 having a swivel head 30, through which the rod 28, provided with adjusting-nuts 34, can slide. An arm 35, also pivoted on the head 30, is linked to the carburettor lever 37 and carries an adjustable stop 38. When the pedal 33 is released, as shown, the cylinder 9 is partially exhausted by the engine suction through the port 24 and pipe 19, the clutch being disengaged. On initial depression of the pedal 33, the valve 22 is moved by its spring 27 to admit air to the cylinder 9 through the port 23, at which instant, or just before, the stop 38 contacts with the arm 31, which thereafter carries with it the arm 35 to raise the lever 37 and accelerate the engine, the head 30 sliding idly up the rod 28. There may be provided a valve to regulate the speed of action and manual means to cut off the cylinder 9 independently of the valve 22. While the clutch pedal 18 can be depressed by the driver at any time, it is automatically actuated by the throttle pedal 33 for coasting or gear-changing, and the momentary depression of pedal 33 for speeding-up the engine during "changing-down" also performs the " double - declutching " function.
Patent GB-153864-A (GB)
Title: Improved roller for anti-friction bearings and method of manufacturing the same
IPC: F16C33/34
Filed: 1920-11-03
Abstract: 153,864. Aktiebolaget Svenska Kullagerfabriken, (Assignees of Hultgren, A. G. E.). Nov. 12, 1919, [Convention date]. Roller bearings.-A solid metal roller for antifriction bearings is made by twisting a rod about its axis at a suitable temperature, after which the rod is reduced to the proper diameter either before or after annealing. It is then cut up in suitable lengths which are finished, hardened, tempered, ground and polished. In the resulting roller 5, the fibres at and adjacent to the surface are helical, as shown at 7, such formation preventing the development of cracks,
Patent GB-828449-A (GB)
Title: Improvements in or relating to conveyors for conveying goods
Inventor: ORWIN OLAF JOHN BARCLAY
IPC: B65G21/14
Filed: 1956-10-13
Abstract: 828,449. Sectioned endless conveyers. FISHER & LUDLOW Ltd. Oct. 11, 1957 [Oct. 13, 1956], No. 31248/56. Class 78 (1). An endless conveyer comprises a plurality of frame sections 10 standing on supports 13 and carrying a belt driving unit 11 and a belt tensioning unit 12, the said units being supported by the frame sections (not directly by the supports). Frame section (Fig. 3).- Channels 14 are connected transversely by bracing tubes 15, the latter being secured to the channels by bars 17. Junction (Fig. 10).-Two conveyer sections are joined at an angle by a junction unit which has two parts, the first part having plates 45, 53 secured to the left section by said plates 53 and the second part having plates 51, 53 secured to the right section by said plates 53, and the two parts pivoting about the axis of roller 47, so that the two sections may be set at a predetermined relative angle. The upper belt is passed round the three rollers 46, 48, 47, the ends of the rollers being held in respective eyes 56, and the lower belt passes over rollers 49, 50. A similar junction 100 (Fig. 1) permits a change of slope of the conveyer belt of the other hand. Alternative junction (Fig. 9).-When a conveyer section 10 is to be positioned inclined to the horizontal a support leg 44 is fitted with a U-shaped bearing member 38, into which depend limbs 40 secured at 43 to said section 10, the member 38 permitting variation of angle in the vertical plane. Additionally the limbs 40 are made to carry return belt roller 39. Roller conveyer sections.-Each frame section 10 may be a gravity roller conveyer section adapted for use with an endless conveyer, the sections together forming the complete endless conveyer apparatus. Additionally, a roller conveyer may be added to an end of the endless conveyer framework to feed to or discharge from the endless belt.
Patent GB-159670-A (GB)
Title: Brake mechanism
IPC: F16D49/16
Filed: 1919-12-15
Abstract: 159,670. Ackley, G. S. Dec. 15, 1919. Hand-actuation. - Mechanism for operating vehicle brakes comprises a winding-drum having a grooved tapering section 10 with a cross-groove 63 to adapt the drum for having a chain 13 wound thereon in either sense. The drum is formed with a central pinion 9 and chain-receiving sections 10, 11 on each side thereof, the section 11 receiving a check-chain 14 for use in the event of fracture of the chain 13, or for connection of a chain 60 to operate a second brake as shown in Fig. 7. The drum is mounted on a shaft 16 journaled in a plate 2 at one end and at the other in a collar 5 supported by horns 4 projecting from a boss on the plate which forms a bearing for the brake standard 46 and its attached spur wheels 20, 41. The plate 2 is secured by bolts passing through slots 31 and by a bolt 36. A new-hole is drilled in the floor 1 when the position of the bolt 36 requires adjustment.
Patent GB-753523-A (GB)
Title: Improvements in or relating to door latches
IPC: E05B65/00
Filed: 1953-11-12
Abstract: 753,523. Latch fastenings. COLDAIR, Ltd., and FURNIVALL, G. Nov. 2, 1954 [Nov. 12, 1953], No. 31416/53. Class 44. A door latch comprises a latching member 13 pivoted between its ends at 17 so as to be able to swing from a latched position (shown), through a dead-centre position to a retracted position (shown in dot and dash lines), means operable by the door handle (which is not shown, and is arranged to be separate from and mounted independently of the latch) for moving the member 13 over its dead-centre position from its latching position, and means for engaging a striker 5 on closing of the door, for tripping the member 13 from its retracted, to its latching position, by giving the member 13 an initial movement over its dead-centre position. The arrangement is such that if the member 13 is in its latching position during closure of the door, engagement of the member 13 with the striker 5 causes the member to pivot towards the dead-centre position and ride over the striker 5. As shown in Fig. 2, applied to the door of a refrigerator, the member 13 is in the form of a double-armed member carried by a pivot 17, which is rigid with the channelshaped latch body 11 riveted to the door 3. A member 18 is pivoted at 19 to the member 13 and has a slot 20 by which it is mounted on a pivot pin 21 rigid with the latch body 11. A spring 22 acts between the pivot pin 21 and a shoulder 23 at the other end of the member 18. The member 13 has a hook-like part 15 carrying a roller 16 for engagement with the striker 5. A second double-armed member 24 pivoted to the latch body 11 at 27, has a base 25 which is in engagement with a pin 26 slidably mounted in the door frame. The pin 26 is operable by a pad 126 by action of the door handle (not shown). The member 24 carries a roller 29 which engages the base 14 of the member 13. In operation, when the door is closed, movement of the door handle causes the roller 29 to bear on the member 13, and thus urge the toggle formed by the members 13 and 18 over the dead-centre position, into the retracted position of the latch. When the door is pushed into a closed position, a part 30 of the member 13 engages the striker 5 to pivot the member 13 back into the latched position. If the member 13 happens to be in its latched position when the door is open, on closing the door, the roller 16 will engage the usual sloping surface 7 of the striker 5 to throw the member 13 over its deadcentre and back to the unlatched position. When the door is finally closed, the member 13 will be thrown back again, as before, by the action of the part 30 engaging the striker 5. In a modification described in the Provisional Specification, the part 30 of the member 13 is replaced by a similar part on a separate arm pivotally mounted on the latch body 11.
Patent GB-1398324-A (GB)
Title: Process and apparatus for use in manufacturing sheet glass
IPC: C03B25/12
Filed: 1972-07-05
Abstract: 1398324 Drawing sheet glass GLAVERBEL 5 July 1972 [13 Aug 1971 29 Aug 1971] 31482/72 Heading C1M In a process for drawing sheet glass by upward drawing through a drawing chamber, which is supplied by causing a continuous flow of molten glass into the drawing chamber, a mixing action is imposed on the gases above the molten glass outside the drawing chamber by exerting gas displacement forces in a direction across the flow of molten glass. The mixing action preferably takes place at a position between the drawing chamber and a shut off which isolates the drawing apparatus from an associated glass melting furnace. The mixing action may take place in a region between the drawing chamber and an end wall of the kiln containing the molten glass. The mixing action may be achieved by directing gas from one or more Gifford or Venturi type ejectors located in the side walls of the kiln in which the molten glass is held. In one arrangement (Figs. 1 and 2) two pairs of ejectors 19, 20 and 21, 22 are provided on each side wall, one ejector of each pair being horizontally displaced from the other. Gas is supplied first two diagonally opposite ejectors such as 19, 27 and then the other two diagonally opposite ejectors 20, 22 while gas supply to the ejectors 19, 21 is shut off and so on altenately, thus encouraging circulation of gases. Alternatively gas may be supplied alternately to the pairs of ejectors on each side wall. In a further arrangement (Fig. 7) the pair of ejectors 89, 87 are displaced horizontally from an opposite pair of ejectors 86, 88. Also shown on Fig. 7 are ejectors 84, 85 mounted on angled conduits so that by rotating the conduits about their axes the position of the ejectors 84, 85 may be adjusted independently. Gas may also be directed into the kiln from conduits 106-109 (Fig. 8) the outlets of which are closable by means of vanes 110-113 and through screens of flames provided by burners 101-104. The mixing action may further be achieved by using mechanical means such as propellers (Fig. 8, not shown).
Patent GB-1302148-A (GB)
IPC: H01J17/49
Filed: 1971-07-06
Abstract: 1302148 Gas discharge display panels NATIONAL CASH REGISTER CO 6 July 1971 [20 July 1970] 31549/71 Heading HID A plasma display device includes first and second plates 12 and 18 of electrically insulating material, at least the first plate being lighttransmissive, an excitable gas being contained between said first and second plates, wherein said second plate 18 has provided on a surface thereof a plurality of individual electrodes 21 and a common electrode 22, all of the electrodes being separated from said excitable gas by electrically insulating material, there being provided supply means for applying an alternating potential between said common electrode and selected ones of said individual electrodes whereby, in operation, a luminescent display is caused to appear in the region of said selected ones of said individual electrodes. The electrodes 21 and 22 are deposited on the plate 18 by conventional techniques, e.g. vacuum deposition, silk screening or electrolytic deposition. A spacing member 16 having openings each defining a cell has a roughened surface to enable gas to pass from one cell to another. An opaque mask 14 has openings corresponding to the electrodes 21 but conceals the common electrodes 22. The assembly is sealed with glass frit, and the gas filling may comprise 99À7 % Ne, 0À1 % A, and 0À2 % N at a pressure of 16 to 70 mm. Hg, preferably 35 mm. Hg.  In an alternative arrangement (Fig. 2, not shown) the common electrode 22 is located to one side of the group of individual electrodes 21.
Patent GB-1062547-A (GB)
Title: Improved polyamide type fibers
IPC: C08G69/40
Filed: 1965-07-23
Abstract: A fibre-forming linear polyamide may be derived from equimolecular proportions of adipic acid and hexamethylene diamine and 0.3-3% of a polyoxyalkylene diamine of formula <FORM:1062547/C3/1> where R is an alkylene radical having a chain of 2-8 carbon atoms and x is such that the molecular weight of the polyoxyalkylenediamine is at least 1000.  The adipic acid and hexamethylene diamine may be present as their salt.  R may be ethylene, propylene, butylene and pentylene. The polymerization may be carried out at 180-300 DEG  C., at atmospheric, sub- or super-atmospheric pressure, and in the absence of O2, e.g. under an N2 atmosphere. The polyoxyalkylene diamine may be added during polymerization of the other monomers. Other materials which may be added are delustrants, antioxidants, plasticizers, viscosity stabilizers and chain terminators.
Patent GB-776133-A (GB)
Title: Electric cable
IPC: H01B7/29
Filed: 1955-11-04
Abstract: 776,133. Cables. STANDARD TELEPHONES & CABLES, Ltd. Nov. 4, 1955 [Nov. 5, 1954], No. 31599/55. Class 36. A coaxial cable comprises a central conductor 1, a helically applied insulating tube 2 having an inorganic core 3, both tube and core being capable of withstanding temperatures up to 135‹ C., an insulating sheath 4, a metallic braid 5 and an elastomeric jacket 6. The conductor is sufficiently rigid to withstand being deformed by the tube 2 and may be of silverplated copper-jacketed steel. The tube 2, sheath 4 and jacket 6 may be of polymonochlorotrifluoroethylene and the core 3 of glass yarn. The braid 5 may be of silver-plated soft copper. U.S.A. Specification 2,131,987 is referred to.
Patent GB-1196748-A (GB)
Title: Improvements in or relating to the Measurement of Dimensions of Bodies.
Inventor: WALTER DEREK OSCAR
IPC: G01B11/08
Filed: 1967-07-10
Abstract: 1,196,748. Digital measurements. JOHNSON, MATTHEY & CO. Ltd. 24 June, 1968 [10 July, 1967], No. 31656/67. Heading G4H. [Also in Division G1] A dimension of a body is compared with a known dimension of a standard body by moving a radiation beam of small cross-section over the dimensions in turn and comparing the times taken for the beam to move over the two dimensions. A beam of light from a source 1 is scanned across a standard wire 4 and a fixed or moving test wire 5 by a mirror drum 2. The square waves produced in photo-cells 3, 3a by interruption of the beam are amplified at 6, 6a, clipped at 7, 7a and used to open gates 8, 8a which pass pulses from an oscillator 9 to the " count up " and "count down" inputs of a counter 10. The number on counter 10 represents the deviation of the diameter of the test wire from the standard. The counter is calibrated by making a number of scans across the standard wire and equating the mean count to the known diameter. In a modification cells 3, 3a are replaced by a single cell and a switch operated by drum 2 segregates the standard and test pulses. The source 1 and drum 2 may be replaced by a C.R.T. flying spot scanner. The gates 8, 8a and counter may be replaced by a C.R.T. display of the pulses from cells 3, 3a. Ultra-violet infra-red or X-radiation may be used instead of light.
Patent GB-632898-A (GB)
Title: Improvements relating to roof ventilators
IPC: F24F7/02
Filed: 1947-12-02
Abstract: 632,898. Ventilators ; ventilating shaft tops. WALLACE, E. Dec. 2, 1947, No. 31803. [Classes 25 and 137] A roof ventilator comprises a pair of oppositely mounted dampers 7, 7a, pivoted on a supporting structure 1 above an opening 3 for movement about a horizontal axis intermediate their top and bottom longitudinal edges, so that in their open position an unimpeded vertical air passage 10 is provided and when closed, as by their top edges abutting, additional outlets in the vertical side walls of the structure are uncovered to permit a lateral outflow of vitiated air. The dampers may consist of glazed frames and preferably comprise several sections ; they may be counterbalanced and have control cables operated manually or electrically.
Patent GB-440680-A (GB)
Title: Improved underlay-covering for floors
IPC: D06N7/00
Filed: 1934-11-06
Abstract: 440,680. Compound sheet materials. ROYLE, N., 149, College Road, Whalley Range, Manchester. Nov. 6, 1934, No. 31811. Drawings to Specification. [Class 140] A compound sheet material for laying under linoleum, carpets, parquetry flooring, wood block flooring, &c. consists of one or more layers of bitumen-impregnated felt, and one or more layers cut from a block of compressed granulated cork, united by a waterproof adhesive such as bitumen paint. For example, a layer of felt may be united to one of cork, a felt layer may be sandwiched between two cork layers, or a cork layer between two felt layers. The block to be sliced may consist of cork granules bonded with magnesium oxychloride cement.
Patent GB-707959-A (GB)
Title: Vesicular prints and process of making same
IPC: G03C5/60
Filed: 1952-12-16
Abstract: 707,959. Photographic diazo layers for vesicular prints. DIXON, M. G. (General Aniline & Film Corporation). Dec. 16, 1952, No. 31864/52. Class 98(2) A support is coated with an aqueous dispersion comprising 30 to 40 parts of a hydrophilic colloid, 3 to 10 parts of a finely divided solid having an index of refraction similar to that of the colloid, and a stabilized photosensitive diazonium compound; and dried. On exposure light affected areas release gas, and on development by heat, moisture or steam the colloid softens to permit formation of minute vesicles which can refract light to cause an appearance of whiteness by reflected light and darkness by transmitted light. In a specific embodiment of the invention the support is black paper, the colloid gelatin, the finely divided solid precipitated barium sulphate, and the diazonium compound the zinc chloride double salt of p-diethylamino benzene diazonium chloride. Thiourea and citric acid also are present in the coating dispersion. Ultra-violet exposure through a positive transparency requires 30 seconds as against 70 seconds in absence of the barium sulphate to produce equal density on steam development. A glass support instead of the black paper results in a negative print. In variations the support may be regenerated cellulose, cellulose acetate or metal; the colloid may be glue, casein, fish glue, gum tragacanth, starch, dextrin, albumin, polyvinyl alcohol, urea- or melamine formaldehyde resin; the solid bentonite, colloidal silica, or calcium sulphate or silicate; the diazonium compound a diazo oxide, a diazonium compound derived from para-amino diphenylamine, the zinc chloride double salt of 4-benzamido-2.5-diethoxybenzene diazonium sulphate, of diazotized 3-aminocarbazole or of p-diethylamino-o - ethoxybenzene diazonium chloride; or the cadmium chloride double salt of p-dimethylaminobenzene diazonium chloride or of 2-hydroxy-4-sulphonaphthalene-1-diazo anhydride. Other acidic stabilizers are indicated. The final print may be given a hydrophobic coating as of wax. Specifications 524,786, 636,144, 645,825 and 647,617 are referred to.
Patent GB-1130625-A (GB)
Title: Remanent electromagnetic relay
IPC: H01H51/27
Filed: 1966-07-15
Abstract: 1,130,625. Magnetically retained relays. INTERNATIONAL STANDARD ELECTRIC CORP. 15 July, 1966 [21 July, 1965]. No. 31899/66. Heading H1N. A remanent relay which may or may not be polarized has its operating coil made of remanent material. In the polarized relay shown a toroidal permanent magnet 2 and coil 3 of remanent material surround a sealed magnetic reed contact unit 1. More than one contact unit may be provided and the coil may be in two portions, one on each side of the magnet. The coil may be of interleaved tape or wire.