baber/WOPTO huggingface dataset:
Patent GB-944090-A (GB)
Title: Improvements in or relating to declutching devices
IPC: F16D25/12
Filed: 1962-06-26
Abstract: 944,090. Controlling clutches and changespeed gearing; brakes. FRANCAISE DU FERODO S.A. June 26, 1962 [June 27, 1961; June 6, 1962], No. 24557/62. Headings F2D, F2E and F2L. An axially displaceable clutch thrust bearing is displaced by a pressure chamber having inlet and outlet valves under the control of a pilot mechanism, declutching being initiated by movement of the pilot mechanism to close the outlet valve before opening the inlet valve, the outlet valve being displaceable against a spring while remaining closed. A conventional single plate automobile clutch is released by a pedal operated release fork 34 which first contacts a valve stem 33 to seat outlet valve 31 against seating 55 on a spring loaded valve member 56. The valve spring 59 being weaker than the spring 60 allows the valve to remain closed, and prevent pressure air flow from pressure chamber 27 to exhaust 67, during further movement of the fork 34 which opens an inlet valve 30 between a pressure supply line 37 and the chamber 27. Pressure in the chamber 27 produces axial movement of a cylinder 20 carrying the valves and clutch thrust bearing 22 such that the clutch is released to an extent dependent on the movement of the fork 34. Selective fast or slow re-engagement of the clutch is provided by a two-way valve 68 leading to different area restrictors 69, 70. Since the fork 34 may butt against the ends of the valve bodies 36, 48, which are threaded into the cylinder 20, the pedal may always assist clutch release. The valve bodies may alternatively be bolted to the cylinder. In a second embodiment, Fig. 8, the stationary piston 26 of the pressure chamber 27 contains a second axially movable piston 75 restrained against rotation by splines 76 and carrying a brake lining 77 engageable against a face 78 rigid with a gear-box input shaft 15. On axial movement of the cylinder 20 sufficient for full clutch release, pressure from chamber 27 passes by passage 72 to a chamber 73 to apply the brake. In a modification, Fig. 9, the passage 72 is controlled by a valve 80 opening after lost motion D equal to clutch release, the dimension D being kept constant irrespective of clutch wear or adjustment by a sprag washer 84 acting on the valve stem 83. The pressure in the cylinder 20, Fig. 10, may be used to actuate a two-speed axle servo-piston 89 after change has been selected by a manual piston valve 85, the pressure being operative after it has reached a value sufficient to open a spring loaded valve 93.
Patent GB-297109-A (GB)
Title: Turbo-generator plant employing steam as motive power and hydrogen gas as cooling medium
IPC: H02K9/08
Filed: 1928-08-27
Abstract: 297,109. Maschinenfabrik Oerlikon- Sept. 15, 1927, [Convention date]. Dynamos, cooling.-In a steam turbo-generator set in which hydrogen is employed as the cooling medium, the hydrogen is obtained by reduction of steam by the oxidation of iron. During peak loads, the full supply of steam is used by the turbine and the cooling medium is drawn from the accumulated reserve.
Patent GB-688319-A (GB)
Title: Improvements in or relating to instruments for measuring forces
IPC: G01D5/20
Filed: 1950-10-09
Abstract: 688,319. Reservoir pens. DREYFUS, J. A. Oct. 9, 1950. No. 24608/50. Class 146 (iii). [Also in Groups XIX, XXXII and XXXVI] An oscillograph needle 22, (see Group XIX) comprises a number of telescopic tubes 61, 62, some of which may be of elliptical cross-section, and terminates in a jet head 63. The needle passes through a part 25 and is clamped by a nut 67 which may be adjusted with a tube key without disturbing a nut 66 clamping the coupling and suspension blades. The needle is supplied by an ink reservoir 68 through a rubber fitting 69, rigid tube 70, rubber tube 71 and a flow hole 111. The jet head 63 may be closed by a stainless steel wire 72 which passes through a resilient joint 73 and guide tube 74 to abut against a push button 75 with return spring 76 and actuated by a knob 77; which also controls the starting of the paper feed motor and the opening and closing of an aeration hole 68a of the reservoir 68 through a tube 79. The flow hole 111 and aeration hole are disposed diagonally opposite one another so that ink will flow when the apparatus is in any one of three positions obtained by turning it through 90 degrees. The jet head, Fig. 15, may be screwed to the needle and comprises a conical body 116 forced on to a conical point 117 of hard material such as sapphire, ruby or hard metal. The needle may be of a light rustless metal. The ink should be neutral and opaque without clogging, preferably brown e.g. by adding lamp black to red ink. The wire 72 should be of an electro-chemical material close to that of the needle e.g. stainless steel when the needle is of aluminium alloy; to prevent electro-chemical current the wire 72 may be enamelled or lacquered..
Patent GB-690032-A (GB)
Title: Improvements in folding or collapsible boxes
IPC: B65D5/64
Filed: 1949-09-26
Abstract: 690,032. Boxes. OGILVIE, J. D. Sept. 26, 1950 [Sept. 26, 1949], No. 24698/49. Class 18 A box comprises two collapsable tubular elements 4, 5 which when erected on the box bottom lie side by side to form a partitioned container, flaps 8, 9 attached to the bottom maintaining the box erect by engaging over the sides of the elements 4, 5. The bottom, flaps 8, 9 and three sides of each element 4, 5 are formed from a single blank, the fourth sides of the elements 4, 5 being attached by stapling &c. Additional end panels 12 may be secured inside the box end walls, their turned over edges 13 locking the flaps 9 in position. Tabs 14 carried on the portions 11 may also serve this purpose. The portions 11 may include handles 15 and a lid may fit over the handles which pass through slots joined by an S shaped cut therein. Ventilation holes 18 may be provided.
Patent GB-688068-A (GB)
Title: Improvements relating to gas release mechanism
IPC: F17C7/00
Filed: 1950-10-10
Abstract: 688,068. Inflatable life jackets. KIDDE CO., Ltd., W., and SPIDY, A. R. Oct. 10, 1951 [Oct. 10, 1950], No. 24702/50. Class 77 [Also in Group XXVIII] A compressed carbon dioxide container 1 (see Group XXVIII) for inflating a life jacket is secured to the outside of a rubber patch 44 by a bolt 45 and by a check valve 46. In a modification the container body is located internally of the jacket but with gas release mechanism outside. Specification 662,898, [Group XXVIII], is referred to in the Provisional Specification.
Patent GB-386709-A (GB)
Title: A new or improved combined and convertible dining and kitchen table
IPC: A47B1/04
Filed: 1931-09-03
Abstract: 386,709. Hinges. PARFITT, W. E., 58, Goldieslie Road, Wylde Green, near Birmingham. Sept. 3, 1931, No. 24732. [Class 65 (ii).] A table top comprises a permanent central part c, Fig. 3, normally covered by two infolding flaps d, and two drawleaves a mounted on hinges f which permit a slight rising and falling and other movements. To permit these movements the hinges f may consist of each of an L-shaped plate e, f, Fig 6; a stop pin on each edge of each flap d engages with a recess j in the plate f. In a modification, ordinary hinges l, k are used, and are attached to a rectangular hinge bar m, Fig. 9. Reference has been directed by the Comptroller to Specifications 208,403, [Class 52 (iii), Tables &c.], and 349,299, [Group XIV].
Patent GB-673871-A (GB)
Title: Improvements in or relating to process for the manufacture of tetraalkyllead compounds
IPC: C07F7/24
Filed: 1949-09-28
Abstract: Tetra-alkyl lead compounds are prepared by reacting an alkylating agent with lead and free metallic magnesium in the presence of a catalyst, said alkylating agent comprising one or more esters of inorganic acids having the desired alkyl group attached to the negative radical, and said catalyst being one or more organic compounds selected from the group comprising ethers, cyclic ethers, tertiary amines and substituted ammonium salts. The lead may be in the form of an alloy, e.g. with alkali or alkaline earth metals or with magnesium.  The alkylating agent may be an alkyl chloride, bromide, iodide or phosphate, e.g. an alkyl halide containing not more than 10 carbon atoms.  Catalysts that may be used include alkyl and aralkyl ethers, tetra-alkylammonium and aralkylammonium iodides and trialkyl- and triaralkyl-amines. The reaction is preferably carried out at a temperature within the range of 45 DEG  to 85 DEG C. for from 1/2 hour to 6 hours.  The ratio by weight of magnesium to lead may be between 1/100 and 30/100.  The ratio by weight of catalyst to magnesium may be between 8/1 and 1/20.  The alkylating agent may be employed in excess over the stoichiometric amount.  The lead used in the above process may be obtained from a process wherein both tetraalkyl lead and free lead are formed, e.g. a two-stage process may be used wherein free lead and tetra-alkyl lead are formed from the reaction of an alkali metal-lead alloy and an alkylating agent and the free lead so formed is reacted in accordance with the above process to form more tetra-alkyl lead.  A number of examples are given.
Patent GB-1504867-A (GB)
Title: Voltage amplitude multiplying circuits
IPC: G04G99/00
Filed: 1974-06-05
Abstract: 1504867 Counters RCA CORPORATION 14 May 1975 [5 June 1974] 24898/74 Heading G4D [Also in Divisions H2 and H3] A D.C. voltage multiplier (see Division H2) incorporates a counter 25. As shown in Fig. 4, a first voltage multiplier 21 receives a positive D.C. supply +V and clock or aperiodic pulses Q and produces a square wave A (Fig. 2) swinging between -V and + V. A waveform B is also produced swinging from 0 to - V. When Q is 0, transistors N1a, N2a are off and P1a, P2a are on. This gives +V at 16a, turining on N3a which clamps 17a to ground. Ca charges via P1a and N3a. When Q is +V, P1a, P2A are off and N1a, N2a are on so that the left hand side of Ca is clamped to ground, when 16a, 17a become -V. A similar circuit 23 is driven by antiphase clock or aperiodic pulses Q and gives inverse waveforms at 22, 24. Waveforms A, B, A, B are fed to the indicated points on a counter 25 which arranges that alternate series chains of transistors I, II, III conduct alternately, giving waves of half frequency at 01, 02 and 03; the frequency may be further reduced by additional circuits.
Patent GB-205300-A (GB)
Title: Improvements in or relating to the feed or camshaft driving mechanism in automatic screw machines and similar machinery
IPC: B23B7/10
Filed: 1922-09-14
Abstract: 205,300. Smallpeice, C. D. P., and Smallpeice, Ltd. Sept. 14, 1922. Turning.-In a change-speed feed or cam-shaft driving-mechanism for automatic screw-machines &c. the low speed drive, which is transmitted through change gearing or, in a modification, through constant-mesh change-speed gearing, is automatically engaged when the fixed high speed is disengaged. A bracket a secured to the machine bed is provided with a worm-shaft b and a parallel shaft c mounted in sleeves d, e bearing on the bracket. The sleeve c carries a loose pulley m and a fixed pulley n provided with a planet pinion p engaging fast and loose gears q, r on the shaft c, the gear q having one more tooth than the gear r. Reverse rotation of the gear r is prevented by a pawl engaging a ratchet wheel s. The worm shaft b carries fast gears f, g engaging gears j, h secured on the sleeve d and shaft c respectively. The gears g, h are changeable to vary the slow speed or they may be replaced by a series of automatically-selected constant-mesh gears. The shaft c carries a clutch member t in constant engagement with a long tenon on the sleeve d and engageable by cam and lever mechanism with the sleeve e. In operation when the clutch member t engages the sleeve e the high speed drive is transmitted to the worm shaft b through the sleeve d and gears j, f, the shaft c then revolving idly. When the clutch member is disengaged from the sleeve e the slow drive is imparted to the shaft c through the planet gearing and transmitted to the worm shaft through the gears h, g. Reference has been directed by the Comptroller to Specifications 27971/09, 5039/10, and 14600/11.
Patent GB-810558-A (GB)
Title: Improvements in semiconducting elements of silicon
IPC: H01L21/00
Filed: 1955-08-31
Abstract: A semi-conductor device comprises a body of initially high purity silicon impregnoted with from 1013 to 1017 atoms of gold per cc. bearing a pair of ohmic electrodes.  The device has enhanced photo-conductive and temperature variable resistance properties particularly at low temperatures.  A suitable mono-crystalline rod may be produced by seed withdrawal from a silicon melt containing 5 to 10 per cent of gold, which has a low segregation coefficient. Specifications 686,907 and 721,671 are referred to.
Patent GB-625984-A (GB)
Title: Improved fluid operated valve gear for fluid pressure engines
IPC: F01L25/02
Filed: 1946-08-22
Abstract: 625,984. Fluid-pressure engine valves. SPEEDIE, A. D. Aug. 22, 1946, No. 25013. [Class 122(ii)] In a fluid-actuated valve gear working in conjunction with a horizontal directacting duplex reciprocating pumping engine, the fluid actuated distribution valve on each side of the engine is operated by means of pressure taken from the working cylinder on the opposite side of the engine, the said pressure being released from the cylinder when the piston therein passes beyond an auxiliary passage arranged at a point to allow pressure to pass from the cylinder and to act directly on the respective ends of the distribution valve. Fig. 12A is a diagram of the engine showing the pistons P, P<2> on their inward stroke, and valves V, V<1> in their inner position, the main working passages through the valves being omitted for clarity. At the time when piston P<2> is reaching the end of its stroke, piston P moves to uncover passage D allowing pressure fluid to flow from cylinder C via passage F in valve V, passage G, adjustable regulating valve H to inner end of valve V<1>, the outer end being connected via passage G' to exhaust cavity O (shown in broken lines) in valve V. Valve V<1> is therefore moved to its outer position thereby reversing the flow to cylinder C<2> and causing piston P<2> to start its outward stroke. Piston P<2> moves past the passage D<2> when piston P is at the inner end of its stroke and pressure fluid flows from cylinder C<2> via passage D<3>, passage F' in valve V<1>, passage G<3> and regulating valve H<3> to the inner end of valve V, the outer end being connected by passage G<2> to exhaust cavity D<1> in valve V<1> so that valve V is moved to its outer position in which it reverses the flow to cylinder C, the piston P then moving on its outer stroke until it moves beyond passage D<1> at the time when piston P<2> has reached the end of its outward stroke. Pressure fluid then passes from cylinder C via passages D<1>, F, and G<1> to move valve V<1> to its inner position, thereby starting piston P<2> on its inner stroke. When piston P is at its outer end position, piston P<2> passes beyond passage D' and pressure fluid from cylinder C' passes via passages D<3>, F<2>, and G<2> to move valve V to its inner position, thereby moving piston P on its outward stroke. Positions of pistons and valves will then be as in Fig. 12A, and a new cycle commences. The valves are in the form of a plain unstepped piston with all pressure passages arranged through the body thereof and grooved at each end to take packing rings. As shown in Fig. 1 the main working pressure passages B<2>, B<3>, have greater area at the top or inlet end than at the bottom or outlet end in order that a greater pressure may be exerted on the top half of the valve to ensure good bearing of the bottom half in the valve housing. A tapped hole Y, into which a spindle is screwed, is placed off centre to counteract any rotary motion of the valve.
Patent GB-432664-A (GB)
Title: An improved apparatus for grading fruit, vegatables, and other solid substances
IPC: B07B13/00
Filed: 1934-08-31
Abstract: 432,664. Sifting-apparatus. LESLIE, G. M., Sunnylaw House, Bridge of Allan, Stirlingshire. Aug. 31, 1934, No. 25059. [Class 117] Apparatus for grading fruit &c. according to size comprises a box 6 containing a number of superposed riddles 8 of decreasing mesh and divided along one side into channels 9 communicating with the spaces above the riddle. The box is rocked about horizontal pivots 7 and, after the riddling operation is complete, is turned through a right angle so that the passages 9 register with the shoots 16 on a stationary table for discharge of the graded products. The bottoms of the passages 9 in their discharging position are inclined, and stops 21 are provided on the box to engage with the supporting framework and limit the movement of the box between the horizontal position and the discharging position. The riddles are inclined or curved so as to rise in the riddling position towards the passages 9. The shoots 16 are closed by doors 17 and baskets or containers are mounted on a platform 18 which can be slid on guides 19 under the frame when not in use.
Patent GB-989734-A (GB)
Title: Improvements in or relating to the production of machine-glazed paper web materials
IPC: D21G1/00
Filed: 1961-07-11
Abstract: 989,734. Glazing paper web materials. BELOIT IRON WORKS. July 11, 1961 [Sept. 19, 1960], No. 25107/61. Heading D1L. Paper web material W is glazed on one side by wetting it on one side S with water or sizing solution, by a spray, shower or roll-coating, and passing it between a finishing roll and a backing roll 9. The backing roll has a surface of hardness less than 30 P and J (# inch ball); this may be a hard rubber sleeve over a metal core, and may be internally cooled. The finsihing roll is harder than the backing roll, and highly polished and may be plated with chromium or nickel. It is internally heated to give a surface temperature of at least 220F. and the two rolls are pressed together at a pressure of 240 to 2400 1b/in<SP>2</SP>, so that the wetted surface, which is in contact with the finishing roll, is dried and glazed. As shown, the apparatus also comprises an air-doctor 6a, fly-rolls 24 and 25, and a second backing roll 10 forming a second pressure rip with the finishing roll. In modification, the glazed surface may be resocketed and the web passed through a similar apparatus, or the unglazed surface may be wetted and the web passed through a similar apparatus with the inglazed surface in contact with the finishing surface to yield a product glazed on both sides.
Patent GB-181282-A (GB)
Title: Improvements in lubricators, chiefly for use with hack saw machines and the like
IPC: F16N7/16
Filed: 1921-09-22
Abstract: 181,282. Herbert, E. G. Sept. 22, 1921. Lubricant conveyed by mechanical means.-A lubricator for hack saw machines &c. which delivers lubricant each time the saw frame is tilted on the introduction of fresh work, comprises a cylindrical vessel a attached to a tiltable part c of the machine, in which a U-shaped pendulous arm f is pivoted so that it can always assume a vertical position. An axle g carrying a dipper arm g is rotatably mounted in the sides of the vessel a and rests on the curved hub of the arm f so as to be frictionally rotated thereby. A dipper h<1>, which is counterbalanced by a weight h, has a series of V-shaped delivery points on one edge and a gutter-way on the other. On tilting the part c, the dipper arm is rotated about the axle g<1> until the gutter-way dips into oil which is contained in the lower portion of the vessel a, and on lowering the part c the oil in the gutter-way is carried over and delivered by the delivery points to a series of pipes a<3> leading to the parts of the machine to be lubricated. The axle g<1> may gear positively with the arm f by tooth-gearing. The action of the machine may be reversed.
Patent GB-867043-A (GB)
Title: Web supply means
IPC: B65B41/12
Filed: 1958-08-06
Abstract: 867,043. Feeding webs. PACKAGE MACHINERY CO. Aug. 6, 1958 [Aug. 30, 1957], No. 25158/58. Class 100(1) A device for feeding web material at a variable rate from a rotatable supply roll comprises a braking device for applying a variable braking action to the supply roll, a web loop-forming roll movable along a predetermined path and arranged to control a bell-crank lever, the angular relationship between a first arm of the bell-crank lever and the path of movement of the loop-forming roll being such that the arm extends substantially parallel to this path and a second arm of the bell-crank lever being arranged to control the braking action applied to the supply roll such that a shortening of the loop reduces the braking force. As shown, a web supply roll 16 is mounted on a shaft 36 rotatably mounted by roller bearings 48 mounted in a block 50. A brake drum 46 on the shaft 36 has a peripheral groove engaged by a roller 49 carried by a block 51 adjustable by a screw 61 to position the roll 16 correctly in a transverse direction. A brake shoe 52 is supported by plates 56 pivotally mounted on a pin 60 on a pivotally mounted bar 62 urged downwardly by a spring 72. The plates 56 are rocked downwardly by a weight 86 on a bar 82 attached to the plates. The lever 62 may be swung clear of the supply roll for replacement of this roll and retained in raised position by an over-centre action of the spring 72. The upper end of the bar 82 overlies a roller 89 on a bracket 90 on a bar 94 mounted on a rotatable hub 96. The hub 96 also carries a depending lever 110 rockable by a roller 28 supported by a loop of web. Thus, the length of this loop varies the braking action exerted by the shoe 52. The roller 28 is guided by pinions 112 on the roller shaft engaging fixed racks 116.
Patent GB-467256-A (GB)
Title: Improvements in or relating to a process for the elimination of interference in signals transmitted by oscillatory currents
IPC: F23J1/00
Filed: 1935-09-10
Abstract: 467,256. Preventing inductive &c. disturbance; recording and reproducing circuits. KASEMANN, E. Sept. 10, 1935, No. 25192. Void. Convention date, Sept. 10, 1934. [Class 40 (iv)] [Also in Group XL] Ground noise in sound recording or reproducing or the like is removed by resolving the electric oscillations into their two waves halves which are then reunited after passing through a system having a threshold value. Fig. 1 shows a cathode-ray tube the output from which is applied to a pair of light sensitive cells 12, 13 through a screen 8 having apertures 9, Fig. 1a. In a modification, Fig. 2 (not shown), a pair of push-pull valves biassed below the bottom bend are used as the threshold device.
Patent GB-481880-A (GB)
Title: Improvements in bandage packages
IPC: A61F13/02
Filed: 1936-09-16
Abstract: 481,880. Packages. SAMUEL, M. Sept. 16, 1936, No. 25207. [Class 94 (i)] A bandage adapted for rapid application, shown partly unfolded in Fig. 4, comprises a gauze pad b, Fig. 4, on a plaster strip a. The ends of the strip a are covered with gauze strips d, e extending beyond the ends, and reinforced by pieces of plaster d<1>, e<1>. The plaster strip may be perforated. The bandage is packed as shown in Fig. 1 by enclosing in a rectangular sheet f of rubber or rubberized fabric placed round both sides and sealed along the edges g, h with rubber solution. The end e<1> is passed through a vertical slit in the cover and turned back, and the end d<1> is passed between the overlapping ends and turned back. To open, the ends d<1>, e<1> are pulled apart, the cover sheet comes away with the end e<1> and may be removed before application of the bandage.