baber/WOPTO huggingface dataset:
Patent GB-765342-A (GB)
Title: Improvements in or relating to air compressors and the control thereof
Inventor: HODGE JAMES
IPC: F04D25/00
Filed: 1953-10-20
Abstract: 765,342. Gas turbine plant; centrifugal compressors. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Oct. 19, 1954 [Oct. 20, 1953], No. 28989/53. Classes 110 (1) and 110 (3). An air compressing plant comprises a first compressor, the air from which is heated and passed to a turbine driving the compressor, the exhaust of the turbine being led to a second turbine driving a second compressor arranged to accept air from the first compressor and deliver it to an outlet. In the arrangement shown, Fig. 1, an air compressor 10 discharges into a combustion chamber 13 feeding a turbine 11 which drives the compressor. The exhaust of the turbine 11 is supplied to a turbine 18 which drives a compressor 14 supplied with air from the compressor 10. The compressor 14 discharges through a receiver 15 to a duct 16 leading to the point of use. The compressor 14 may be driven by the high-pressure turbine and the compressor 10 by the low-pressure turbine. The receiver 15 has a by-pass duct 20 controlled by a relief valve 21 regulated by a flow detecting device 23. The flow detecting device and relief valve 21 may be as described in Specification 612,414. Temporary reduction of flow may be obtained by hand operation of the valve 24. A governor 25 controlling the fuel supply to the combustion chamber 13 prevents overspeeding. For idling conditions the fuel supply to the combustion chamber is controlled by a second manual control (not shown). The whole of the compressing plant may be mounted on the receiver 15 so that it may float in water. The receiver may also be formed by the space between an outer casing and the main components of the plant. The compressor 10, Fig. 2, discharges into the duct 27 feeding the combustion chamber 13 which discharges through a scroll 28 to the turbines 11, 18 arranged in series and driving the compressors 10, 14, respectively. Part of the air from the compressor 10 passes through the duct 30 to the compressor 14 which discharges into the receiver 15. The receiver 15, which is in the form of a flat hollow slab, supports the compressing plant by the members 31. The Provisional Specification describes an arrangement in which a single turbine drives both compressors. In another arrangement the air is taken off to the user from the gas turbine plant compressor without further compression. In a further arrangement the air for the combustion chamber is bled off from a stage of a compressor which discharges direct to a user. Arrangements in which the compressor supplying the user is independent of the gas turbine compressor are also described. These arrangements may be controlled by placing a blow-off valve on the receiver, by throttling the intake of the useful air compressor or by variable diffuser vanes in the compressor discharge, all controlled by means responsive to the pressure in the receiver. A by-pass around the turbine may be used to prevent overspeeding.
Patent GB-210150-A (GB)
Title: Improvements in and relating to electric trip switches
IPC: H01H5/04
Filed: 1922-10-25
Abstract: 210,150. Priestley, W. C. Oct. 25, 1922. Momentary contact switches, mechanical.-Relates to spot welding machines in which depression of a pedal rocks a lever 22 carrying the movable electrode and simultaneously raises a catch 20 which first raises and then slips past a catch 19, so as to cause the temporary closing of contacts 3 and 4. The catch 19 is mounted on a pivoted lever 17 carrying a bridge piece 15 carrying the movable contact 3, and the catch 20 is mounted on a spring-controlled spindle 21 connected to the pedal, the arrangement being such that the spindle 21 passes through the pivotal axis 24 of the split lever 22 so that the action of the trip switch is unaffected by the thickness of the work between the electrodes. The contact 3 is supported by a spring 9 on a yoke 6 connected by two spindles 7 with the bridge-piece 15, and is normally kept at its lowest position by the action of springs.
Patent GB-618000-A (GB)
Title: Improvements in or relating to conveyor belt scrapers
IPC: B65G45/16
Filed: 1946-09-30
Abstract: 618,000. Endless-belt conveyers. BABCOCK & WILCOX, Ltd., and WRIGHT, R. B. Sept. 30, 1946, No. 29098. [Class 78 (i)] A conveyer belt scraper includes a strip 7 of rubber or like flexible resilient material transversely corrugated to increase its resistance to bending. The strip 7 is disposed between two corrugated metal sheets 8, the opposite edges 9, 10 of the strip 7 projecting beyond the metal sheets 8 and the ends of the metal sheets 8 projecting slightly beyond the ends of the strip 7. The blade' comprised by the strip 7 and the sheets 8 is mounted in a holder comprising flat bars 11, 12 by bolts 13 which pass through holes in the bars 11, 12 and the metal sheets 8 and through slots 14 in the strip 7 so that the latter may be moved relatively to its holder to adjust for wear. The holder and blade together can be reversed to use the opposite edge of the strip 7. The bar 12 engages at its ends in guides 17 and is mounted by slots 15 on the ends of arms 16 keyed to a shaft 21 biassed by adjustable weights 28 on arms 26 to press the scraper against a belt passing above. In an alternative construction the bolts 13 pass through holes in the strip 7 and the bar 11 and through slots in the metal sheets 8, one of which is welded to the bar 12, and in the bar 12, which is bolted to the arms 16 by angle brackets.
Patent GB-1115252-A (GB)
Title: "conveying mechanism"
IPC: A21B3/18
Filed: 1965-07-09
Abstract: 1,115,252. Detinning apparatus. BAKER PERKINS Ltd. 9 July, 1965 [23 July, 1964], No 29159/65. Heading A4D. [Also in Division B8] A conveyer mechanism 27 for lifting magnetizable lids L from pansets P as the latter are being conveyed into a machine for removing backed products B from the pansets P, comprises guide track means along which a pair of spaced parallel endless roller chains 55 move and means for creating a magnetic field so that the lids L are conveyed in engagement with chains 55, along a path diverging from that taken by the pansets. Each chain (55) moves along a non-magnetizable channel shaped guide (58a), (58b), Fig. 3 (not shown), the rollers of the chain engaging a central projecting strip in the channel such that the link plates of the chain just project from the channel to engage the lids (L). The guides are mounted between and along the upper and lower edges of a pair of magnetizable side plates 57 forming a housing R therewith, in which are housed permanent magnet bars 59. Outwardly turned flanges are provided along the lower edges of the side plates adjacent the lid carrying run of the chains. The parallel housings R are connected by non-magnetizable bars 63. The whole mechanism 27 is pivotable about a pin 66a journalled in a framework F, the inclination of the mechanism being manually controlled by a threaded bar 70 engaging a nut 69 pivotally mounted to the remote end of the mechanism. In operation, pansets P arriving on a magnetic conveyer 10 have their lids L removed by the conveyer mechanism 27 and are then passed under a pivotable conveyer 28 whereupon suction caps 37 thereon lift baked products B from the pansets and transfer them to a conveyer 40, the lids L meanwhile having been transferred to a conveyer D. All the conveyers are driven through a chain and sprocket transmission from a common motor M. Suction for the cups 37 is supplied by fan S. In the embodiment of Fig. 5 (not shown) the endless roller chains include plastic plates connected to each chain link, which plates extend over and slide along the side plate flanges (57a). In the embodiment of Fig. 6 (not shown) the side plate flanges are replaced by bottom plates on each side of the channel shaped guide and connected by horseshoeshaped magnets.
Patent GB-950289-A (GB)
Title: Improvements relating to organopolysiloxanes
IPC: C09K23/54
Filed: 1960-08-25
Abstract: Organopolysiloxanes have the formula: <FORM:0950289/C3/1> where A is the nucleus of a saturated aliphatic polyhydric alcohol, each R is a monovalent hydrocarbon radical or a substituted monovalent hydrocarbon radical, each R1 is hydrogen or a methyl radical, x is an integer equal to one less than the number of hydroxyl groups in the polyhydric alcohol from which A is derived, the carbonyl carbon atom is attached to a carbon atom other than a silicon-bonded carbon atom, a has a value of from 0.01 to 2.0, b has a value from 0 to 2.49, the sum a+b is equal to from 1 to 2.5, c is an integer and n is from 2 to 18. These compounds may be prepared by reacting a cyanoalkylsilane with a polyalkylene glycol, hydrolysing the product and condensing the hydrolysis product either alone or with one or more organo-alkoxysilanes.  Alternatively a carboxyalkylorganosiloxane of formula: <FORM:0950289/C3/2> with ethylene or 1,2-propylene oxide. Alternatively a carboxyalkylorganosiloxane of the above formula may be esterified with a polyhydric alcohol to give a polyhydroxy ester of the formula: <FORM:0950289/C3/3> which is then reacted with ethylene or propylene oxide.  The polyhydroxy esters of the above formula may also be prepared by reacting one or more cyanoalkylchlorosilanes and one or more other organochlorosilanes with one or more polyhydric alcohols and hydrolysing the product. The products may be mixed with one another and with other organosiloxanes, water and curing agents such as tin oleate to give water-proofing compositions.  Examples are given of the preparation of the organopolysiloxanes and of their use in water-proofing compositions.  Specifications 839,374 and 889,131 are referred to.ALSO:Textile may be waterproofed using compositions containing an organopolysiloxane of the formula:  <FORM:0950289/D1-D2/1> where A is the nucleus of a saturated aliphatic polyhydric alcohol, each R is a monovalent hydrocarbon or substituted hydrocarbon radical, each R1 is hydrogen or a methyl radical, x is an integer equal to one less than the number of hydroxyl groups in the polyhydric alcohol from which A is derived, the carbonyl carbon atom is attached to a carbon atom other than a silicon bonded carbon atom, a has value of from 0.01 to 2.0, b has a value from 0 to 2.49, a + b is equal to from 1 to 2.5, c is an integer and n is from 2 to 18, (see Division C3).  In Examples (10 and 11) aqueous emulsions of two such polysiloxones containing also a liquid methylhydrogen-polysiloxane, a dimethylpolysiloxane and tin oleate are padded on to cotton, rayon and rayon acetate fabrics and heat cured.  Specifications 839,374 and 884,131 are referred to.
Patent GB-444826-A (GB)
Title: Improvements in and relating to wireless receiving systems
IPC: H03G3/22
Filed: 1934-10-15
Abstract: 444,826. Valve circuits for wireless reception. BRITISH TUNGSRAM RADIO WORKS, Ltd., West Road, Tottenham, London, and SZABADI, J. A., 11, Kenmore Gardens, Edgware, Middlesex. Oct. 15, 1934, No. 29444. [Class 40 (v)] Automatic volume control is effected, in a superheterodyne receiver, by controlling the anode voltage of the local oscillator 13 in accordance with the anode current of the anode-bend second detector 18, said anode voltage being derived from the junction of the resistances 20, 22 in the anode circuit of valve 18. The normal oscillator voltage is chosen so that only a small change of gain occurs when the signal amplitude is below a predetermined value. Reference has been directed by the Comptroller to Specification 421,786.
Patent GB-171112-A (GB)
Title: Improvements relating to anti-friction bearing devices
IPC: F16C33/24
Filed: 1921-11-05
Abstract: 171,112. Anastay, J. P. Nov. 8, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Bushes.-A bearing for vehicle wheels &c. comprises a number of concentric tubes arranged one inside the other and formed with longitudinal recesses to contain a solid lubricant such as paraffin alone or melted in vaseline or mixed with graphite. Steel discs formed with recesses for lubricant may be placed at both ends of the bushes.
Patent GB-838134-A (GB)
Title: Improvements in or relating to stop motions for textile machines
Inventor: NESBITT-DUFORT TIMOTHY
IPC: D01H13/18
Filed: 1957-09-19
Abstract: 838,134. Textile stop-motion. SCRAGG & SONS Ltd., E. Aug. 18, 1958 [Sept. 19, 1957], No. 29470/57. Class 120(2) In a stop-motion for use (e.g. in twistdoubling or crimping) where a number of yarns each retaining a detector pass simultaneously along adjacent paths between two common cutting-members, one of which is movable, and in which, when one detector is released by yarn-failure it moves the movable cutting-member to engage the other to sever the remaining yarn(s), to facilitate re-threading, means are provided to support the detectors where they are neither retained by their respective yarns nor in engagement with the movable member, the same means serving to hold the movable member clear of the yarn paths. In a form where the yarns follow vertical paths, each detector 9 is urged by a weight 10 and shares a common pivot 14 with a cutting-member 2 co-operating with an anvil 3: when a yarn fails, the corresponding detector falls so that a part 6 thereon strikes a part 15 on the cutter 2 so that it engages the anvil to sever the yarn. For re-threading, a pivoted member 8 can be raised to engage projections 18 to support the detectors and engage the part 15 to support the cutting- member. In a horizontal arrangement, the detectors are in the form of slidable fallers, and the part 2 in the form of a bell-crank, one arm of which is engageable by a faller and the other carries the cutter. The re-setting member is similar to that already described.
Patent GB-319795-A (GB)
Title: Apparatus for electrical measuring instruments for the mechanical representation of a quotient from its separate members
IPC: G01R25/00
Filed: 1929-09-28
Abstract: 319,795. Siemens - Schuckertwerke Akt.-Ges. Sept. 29, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Multiple indication apparatus.- The quotient of two electrical quantities, for the operation of a measuring instrument or relay, is obtained by separate measurement of the quantities and forming the quotient by by kinematic auxiliary means. The invention is applicable for the measurement of resistance, impedance, power-factor, &c. and particularly for distance relays in which the switching-off of a line is determined by the value e/i, e/i sin #, or e/i cos #. In the example shown in Fig. 1 a coil 2 lifts a, core 1 proportionally to the potential e, .and a second coil 3 moves its core 4 to the right proportionally to the current i. The cores 1, 4 are connected by long rods 5, 6 to a stud 7 on a guide-piece sliding on an arm 8, which takes up a position such that tan a = e/i. In a, modification, Fig. 3, current and pressure measuring pointers 12, 9 are connected by links 10, 13 to a slider moving in an arc in the lever 11, which indicates the ratio e/i. Fig. 4 shows another modification in which the slider and arc are replaced by a link 14. Fig. 5 shows a construc- -tion in which arms 15, 18, moved in accordance with potential and current respectively, are connected by links 16, 17, the locus of the junction 19 of which is traced for different values of e/i. The link 17 may be replaced by an arcuate guide integral with the arm 18. Fig. 7 shows a construction of relay for switching off a line with a delay proportional to e/i. The arms 15, 18 and links 16, 17 are equal, the junction pin 19 being located on the curve corresponding to the e value -. An arm 20, shaped to correspond to i these curves, is driven by a spring 21 and retarded by a dash-pot 22. It is released at the moment a short-circuit occurs and completes a relay circuit on contacting with the pin 19.
Patent GB-653946-A (GB)
Title: Improvements relating to circuit arrangements for stabilising the amplitude of electrical oscillations
Inventor: LEYTON ERIC MCPHAIL
IPC: H04N5/40
Filed: 1948-11-13
Abstract: 653,946. Valve amplifying circuits; valve modulating circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd.. Nov. 13, 1948, No. 29513. [Classes 40 (v) and 40 (vi)] A variable load is coupled to the output electrode of a driving valve so as to present a high impedance to the valve, which is driven to cut-off by the negative excursions of the input voltage applied between its control grid and cathode, and brought to such a low output impedance for positive excursions of the input that variations in the minimum potential at the output electrode are reduced and the amplitude of the potential variations applied to the load rendered more constant. As shown, radio frequency oscillations are applied. to a Class B or Class C amplifier 2 with a tuned anode circuit 5, which may be constructed as a line circuit. The output of the driving valve 2 is fed to the cathode of a grounded grid Class B or C amplifier 10 from a tap on the tuned circuit 5. Modulation signals are applied to the grid of the valve 10. The driving valve 2 is arranged to have very steep anode current/anode voltage characteristics, Fig. 2 (not shown), for low anode voltages and high grid voltages, and the modulated valve 10 is connected to present a high load impedance to the driving valve so that variations in the amplitude of the radio frequency drive fed to the modulated valve 10 are greatly reduced. Push-pull driving and modulated stages may be used.
Patent GB-1533896-A (GB)
Title: Apparatus for visual communication
IPC: H04N7/00
Filed: 1976-07-15
Abstract: 1533896 Teaching appliances A HERMANS 15 July 1976 [8 Aug 1975 29 June 1976] 29533/76 Heading G5G The presentation at 1 of a series of frames of visual information from a tape or film 2 can only be stopped by a switch 7 when an enabling signal A from a control tape 4 is detected at 3; the presentation being restarted by a switch 8. The control tape may be integral with, or separate from the tape or film 2. Preferably the presentation comprises a plurality of series of frames with a control signal A being generated at the end of each series. Each successive series presents a same question but reduced in difficulty so that the point at which the presentation is stopped represents a score. Apparatus is described for television use, (Figs. 3 to 6, not shown).
Patent GB-210177-A (GB)
Title: Improvements in combined dust cap and valve cap
IPC: B60C29/06
Filed: 1922-10-30
Abstract: 210,177. Schweinert, M. C. Oct. 30, 1922. Dust caps for tyre valves. -A valve cap E and dust cap D are relatively movable or separable and have interengaging means, shown as a friction ring H, by which the dust cap is retained when the valve cap is screwed on the casing F. The dust and valve cap may have corresponding polygonal faces or inter - engaging projections and grooves.
Patent GB-635745-A (GB)
Title: Improvements in or relating to stapling mechanism for binding together folded sheets
IPC: B42B4/02
Filed: 1947-11-06
Abstract: 635,745. Rotary stapling machines. TIMSONS, Ltd., and DICKINSON, C. H. Nov. 6, 1947, No. 29613. [Class 89 (iii)] In a stapling mechanism for a rotary printing &c. machine comprising co-operating. fold-blade and stapling cylinders, the stapling cylinder is provided with diametrically opposite staple-forming devices with which is associated a doubleended driver which is reciprocated to operate in conjunction with the two devices alternately. Wire W is fed by rolls 7, 8 from a reel 3 through a curved guide 6 to a nozzle 9 where lengths are cut off by a co-operating edge 10 on the stapling cylinder 2 and retained by a brush 48 and extensions 12 of side plates 11 of the staple-forming devices 1, and are then bent to U-form between a fixed horn 20 and the side plates 11. The staple is supported by spring-pressed blocks 13 between which the driver 5 is movable under the action of a fixed cam. The rolls 7, 8 spring-pressed together are driven by geneva gear mechanism provided with means to prevent accidental movement thereof and operated from the shaft of the cylinder 2 by gears 68, 71, and interchangeable gear 70 or 70<SP>1</SP>.
Patent GB-661546-A (GB)
Title: A mounting arrangement for the barrels of firearms and more particulary those of automatic rifles
IPC: F41A21/48
Filed: 1949-11-18
Abstract: 661,546. Firearms; barrels. CESKA ZBROJOVKA, NARODNI PODNIK, and HOLECEK, J. Nov. 18, 1949. [Nov. 19, 1948] No. 29618/49. Classes 92 (ii) and 119. The barrel 1 of a firearm is fixed to the firearm body 3 at a part of the barrel located either in the front third or, as shown, in the middle third of its length, the front and rear ends a, b, being free, and the rear end being allowed a degree of play d in the parts of the firearm which surround it, The barrel shown is secured in position by a nut 12 and pins 5.
Patent GB-290512-A (GB)
Title: Improvements in detachable holding devices
IPC: B60R13/10
Filed: 1927-11-07
Abstract: 290,512. Thibert, N. R. Nov. 7, 1927. Stud-and-slot fastenings.-A fastening for securing number plates to motor vehicles comprises a flattened stud 15 with a transverse bar 18 and a spring 20 between the base 17 and washer 19, the parts being held between the washer 19 and a hollow head 21 having a slotted base for the bar 18. The bar 18 is received in grooves 23 while a rib 24 may enter the slot in the number-plate bracket. The head 21 has a cover 26 of rustless metal with a flange 27 to secure a jewel 28.
Patent GB-216799-A (GB)
Title: Improved hand-screw
IPC: B25B5/10
Filed: 1923-11-27
Abstract: 216,799. Chris, A. Nov. 27, 1923. Clamps.-A hand-screw comprises wooden jaws. a, b, metal operating screws c, d engaging nuts g, h fitted in recesses in the jaw b, and a metal thrust surface such as a thimble f recessed into the face of the jaw a, this surface being in alignment with the screw d. The thimble f is secured' by means of prongs thereon and is countersunk to receive the end of the screw d. The nuts g, It are situated on opposite sides of the jaw b so that the screws in operation tend to force the nuts into their recesses. The jaws may have faces x of metal, rubber, fibre or like material attached by an adhesive or by screws.
Patent GB-686209-A (GB)
Title: Improvements in the recovery of diamonds from diamondiferous gravel
IPC: B03B7/00
Filed: 1950-12-06
Abstract: The diamond constituent of diamondiferous gravel is recovered by treating the gravel with one or more reagents which render the surfaces of the diamonds water-repellant and flowing the treated gravel over a greased surface.  The reagent may be an aliphatic amine ar salt thereof, whether primary, secondary of tertiery or a quaternary ammonium compound, such as tallow amine acetate, coco amine acetate, tallow trimethylammonium chloride or coco trimethylammonium chloride; a sulphonated or emulsified oil; a salt of a saturated or unsaturated long-chain aliphatic acid such as palmitic, stearic or oleic; or neutralized acid oils such as whale oil, ground-nut oil, fish body oil or copra oil.  Depressing agents such as sulphuric acid to limit the effect of these agents on the gravel itself and dispersing agents such as sodium silicate may be present.