baber/WOPTO huggingface dataset:
Patent GB-833235-A (GB)
Title: Improvements in and relating to electromagnetic clutches
IPC: F16D27/10
Filed: 1956-05-14
Abstract: 833,235. Friction and positive clutches. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. May 14, 1956 [May 21, 1955; June 22, 1955; July 21, 1955], No. 14953/56. Class 80 (2). In an electromagnetic friction disc or positive axially-toothed clutch of the kind having a stationary magnet, the magnet 1 is freely mounted on one, 3, of the rotating clutch members on plain bearings through which passes the magnetic flux. In Fig. 1, friction clutchdiscs 18 are splined alternately to a freelymounted gear-wheel 16 and a sleeve 9 keyed to a shaft 10 and to the clutch-member 3. A ring 11 of non-magnetic material, pinned between the clutch-member 3 and an outer ring 12, both of magnetic material, causes flux generated by a winding 7 to pass through the friction discs 18 and an armature 14 for clutch engagement. An outer air-gap 6 has a width of the same order as the working clearance at the bearing surface 2, which forms another air-gap. In Fig. 2, not shown, the friction clutch discs are arranged radially outside the magnet. The clutch discs may be resilient, for self-disengagement. In the positive clutch shown in Fig. 4, facial clutch teeth 89, 90 are carried respectively by clutch-members 72, 73, the former, 72, keyed to a sleeve 74 fast on a shaft 70, the latter, 73, splined on a sleeve 75 running on needle rollers 77 on the sleeve 74 and carrying a keyed gearwheel 76 to be clutched to the shaft. The clutch teeth 89 are carried on a ring 88 pinned to the clutch member 72 with the interposition of an outer ring 92, and a ring 82 of non-magnetic material. A fixed magnet 91, mounted on a bearing-surface 79 on the clutch member 72, drives flux through the members 92, 72 and an armature 71 attached to the splined clutch member 73. Bearing clearances at 79, 81 form air-gaps. Clutch-release springs 87 bear on a thrust-plate 86. Spacers 84, 85 of non-magnetic material prevent passage of flux through the clutch teeth 89, 90, and the toothed clutchring 88 may also be of non-magnetic material. In Fig. 3, not shown, the axially slidable toothed clutch member is freely slidable on the fixed magnet with the interposition of a ring of non- magnetic material, which causes flux to pass through the clutch-teeth to the clutch member on which the fixed magnet is freely rotatable. The slidable clutch member has an external splined connection with the gear-wheel to be clutched.
Patent GB-541066-A (GB)
Title: Improvements in and relating to apparatus for flashlight photography
IPC: G03B15/04
Filed: 1939-05-20
Abstract: 541,066. Photographic flash-light apparatus. MURPHY RADIO, Ltd., and GOLDRING. E. A. H. May 20, 1939, No. 15033. [Class 98 (i)] The ignition of a flashlamp is synchronized with the operation of a photographic shutter by causing the shutter release first to excite an electromagnet by which the shutter is held against movement, and then throwing the igniter of the flashlamp into the circuit of the electromagnet, which is thereby de-energized so that it allows the release of the shutter. The release may occur owing to the initial resistance of the igniter, or of its rise in resistance on heating, or upon its rupture. The apparatus shown comprises a casing 13 which extends round the tubular handle 1 of the flashlamp, to which it is secured by a screw 14. Mounted in the casing is a push-rod consisting of two metal rods 31, 32 connected by an insulating member 33. The push rod extends through metal sleeves 19, 21 and a metal cap 24 closing one end of a casing containing a solenoid winding 25, these parts being secured by insulating sleeves 18, 22, and 23. A contact washer 36 slidable on the rod 31 is held against the sleeve 33 by a spring 37, and a second contact washer 38 slidable on the rod 32 is pressed upwardly against the sleeve 21 by a spring 39. On depression of the push-rod the washer 36 is permitted to contact with the sleeve 21. The solenoid winding is then energized from the battery 4 in the handle 1 by way of lead 43, winding 25, lead 44, sleeve 19, spring 37 and rod 31, washer 36, sleeve 21, washer 38, spring 39, cap 23, and the metal casings to which the upper contact of the battery is connected. The solenoid core 27 is thus held against movement due to compression of the spring 41 by the push-rod. Further depression of the push-rod causes the insulating sleeve 33 to force the washer 38 away from the sleeve 21. The circuit from the sleeve 21 to the upper terminal of the battery is then completed only by way of lead 45 and through the flashlamp, which is therefore ignited, whereupon the igniter ruptures and breaks the circuit to the solenoid. The spring 41 then pushes the plunger 27 down and causes it to operate the flexible shutter release 29 which is attached to the bottom of the casing. The flexible release may be located between the operating knob and the press-rod 31, or between the rod 32 and the armature 27, the apparatus being in the latter case made in two parts, one comprising the switching devices being contained in a casing held in the hand, the other comprising the shuttercontrolling magnet and being attached to the shutter. According to the Provisional Specification the magnet may be in parallel with the filament which thus short-circuits it until it fuses, the magnet being then energized and operating the shutter.
Patent GB-242905-A (GB)
Title: Improvements in control devices for motor tipping lorries and the like vehicles
IPC: B60P1/10
Filed: 1925-06-10
Abstract: 242,905. Walker, J. S. A., and Walker Bros. (Wigan), Ltd. June 10, 1925. Tipping-wagons.-In motor &c. vehicles provided with automatically-driven tipping-gear which is automatically disengaged at the limit positions of the tipping body, additional means are interposed in the path of the trip gear whereby the automatic drive of the tipping-gear is disengaged at an intermediate position of the tipping body. The tipping-gear shown is described in Specification 150,034, and comprises telescopic screws 1 driven by the shaft 4 from the vehicle motor, the shaft 4 having a screwed portion 11 co-operating with a nut 12 adapted to engage nuts 13 to stop the drive at the limit positions of the tipping body. A shoe 18 is provided mounted on a spindle 16 and adapted to be interposed in the path of the nut 12 to move the trip spindle 14 and so stop the tipping drive before the vehicle body has reached its fully tipped position.
Patent GB-1465282-A (GB)
Title: Leakage control structure
IPC: F01D5/20
Filed: 1974-04-04
Abstract: 1465282 Turbine blade shrouding GENERAL ELECTRIC CO 4 April 1974 [19 April 1973] 15049/74 Heading F1T Leakage past a shroud ring 18 secured to the tips of turbine rotor blades 14 is reduced by a labyrinth seal formed by ribs 28, 32 co-operating with stepped surfaces 26, 30 separated by a concave or flat edge 31. As shown ribs 28, 32 are formed on the stator structure 10 but in a modification, Fig. la (not shown) are on the shroud ring.
Patent GB-917334-A (GB)
Title: Improvements in locking units for casement and similar windows
IPC: E05C9/18
Filed: 1961-04-26
Abstract: 917,334. Releasable fastenings. ABENDROTH G.m.b.H., [trading as ABENDROTH G.m.b.H. & CO. KOMM. GES.].- April 26, 1961 [Sept. 6, 1960], No. 15060/61. Class 44. A fastening system for a window having a casement a swinging about a horizontal axis, comprises a vertical bolt 27 at each side of the window, moved into engagement with a plate 29 on the window frame b by an operating member 1, which is connected to each bolt 27 by a linkage system comprising a bar 10, a connecting member 14, linking the bar 10 with a chain slidable within an arcuate sleeve 2, and a further connecting member 23 linking the chain with a second bar 21 to which the bolt 27 is connected. The adjacent ends of each bar 10 and its associated connecting member 14 are serrated, and by means of a pin and roller 4, the member 14 may be moved relative to the bar 10 to decrease the effective length of the latter and provide a means of adapting the system to fit windows of various sizes. A pin 16 (not shown) is provided for locking the members 14 and 10 together after the necessary adjustment has been made.
Patent GB-168663-A (GB)
Title: Improvements in account files
IPC: A47B53/00
Filed: 1920-06-04
Abstract: 168,663. Reddie, L. N., (Barr, H. L.). June 4, 1920. Pivoted-leaf files; cabinets.-In pivoted-leaf files of the type in which a series of stiff leaves are supported in a cabinet and are turned up or down on horizontal axes and rest upon a yielding table, the near leaf is provided at its upper end with projections which lie in bearings formed between fixed and adjustable stops on the sides of the cabinet, the adjustable stops lying behind the projections and the fixed ones in front of them. As shown in Figs. 1 and 3, the fixed stops 6 are formed of angle-iron, and are situated lower than the stops behind them. The adjustable stops 7 are also formed of angle-iron, and are detachably secured by bolts 8 to a bar of angle-iron 5, the flange 38 of which forms a base for the rear leaf projections 4. Rearward displacement of the leaves when in the horizontal position is prevented by links 22 pivoted to the hinges of the front leaf, Fig. 4, the links having projections 23 which engage in front of the guide-bars 19. Additional projections 23<a> may be provided on the links coaxial with the pivot 20 to strengthen the arrangement. The guide-bars 19 have forward extensions 24, so that the file may be easily removed under the influence of the yielding table by lifting the rear leaf clear of the short stops 6 at the top of the cabinet, and drawing the front leaf off the guide-bar extensions. The yielding table is mounted in the cabinet in known manner, the file being held upon it by restraining-bars 21 movable along guides 25, 26, spring-controlled slides 28 having pin-and-slot connections with the restraining-bars, latches 30 pivoted on the slides at 40 also having two pin-and-slot connections with the restraining-bars. In the normal operative position of the restraining-bars, the latches engage shoulders 31 on the front guides 25, and the slides engage lugs 29 on the rear guides. Raised bosses 35 on the table hold the front leaf in its horizontal position. A roller curtain 36 is secured to the front of the table. Larger books of leaves may be inserted in the file by adjusting the stops 7 in the holes 81.
Patent GB-333582-A (GB)
Title: Improvements relating to electrical induction furnaces
IPC: H05B6/24
Filed: 1929-05-15
Abstract: 333,582. Davis, N. R., Wood, G. A., and Associated Electrical Industries, Ltd. May 15, 1929. Induction furnaces.- The material for lining the furnace is graded axially so that some parts are less refractory and more easily sintered than other parts. The least refractory material is arranged at the rim and the most refractory where the most rapid erosion is likely to occur. The normal lining material comprises 65 per cent magnesite and 35 per cent lime. For the bottom of the furnace 6-7 per cent of borax is added. The erosion is likely to be most rapid at about 6 inches from the bottom and only 4 per cent of borax is used at this level. The amount of borax used may then increase up to 15 per cent at the wash line. At the rim 25 per cent or more borax and 5 per cent of dextrine may be added.
Patent GB-1071843-A (GB)
Title: Improvements relating to vehicle suspension systems
Inventor: DUCKETT WILLIAM ARTHUR
IPC: B60G21/073
Filed: 1964-04-14
Abstract: 1,071,843. Controlling lateral canting. WOODHEAD MANUFACTURING CO. Ltd. March 26, 1965 [April 14, 1964], No. 15294/64. Headings B7D and B7L. [Also in Division F2] A railway bogie or other vehicle suspension comprises a piston 17 on each side reciprocable by relative movements of the sprung and unsprung parts of the vehicle in a cylinder 10 the lower and upper ends 20, 21 of which are respectively connected to shock-absorbing devices 34 on the same and opposite sides of the vehicle to resist vehicle roll. Each shock-absorbing device (Fig. 3, not shown), comprises a cylinder (24) with ports (35), (37) connected to respective cylinders 10, flap-type damping valves (42), (43), a piston (30) with a bleed hole (32), a hollow piston-rod (28) with a passage (44) communicating with a reservoir (46) through non- return valves (48), (50) which control flow to and from the reservoir and a spring (53) tending to urge piston 30 to the central position. Valve 48 also acts as a pressure-limiting relief valve for chamber 34. The reservoirs 46 are interconnected by a pipe 46a.
Patent GB-557668-A (GB)
Title: Improvements in means for keeping a clear vision through the windscreen of a motor vehicle or the like
IPC: B60S1/52
Filed: 1942-11-02
Abstract: 557,668. Windscreen cleaners. TAYLOR. J. T. Nov. 2, 1942, No. 15374. [Class 138 (i)] In a windscreen wiper clear vision in all weathers is ensured by employing means for discharging a gas, vapour, or liquid on to the screen by means of an arm or distributer member movable over the screen and connected to a hollow body mounted on the wiper shaft. In Fig. 1, the wiper 5 is mounted in an oscillating hollow member 1 to which are secured two pipes 6 perforated for discharging hot air admitted to the member 1 by a flexible tube, or by a rotary air-tight joint. In Fig. 6, is shown means for producing a stream of hot air, or a mixture of steam and hot air, in which a pump 43 is actuated by the exhaust of an internal combustion engine 44, and delivers air through a muff 45 around the exhaust and thence via a tube 47 to the member 1 and distributer 48. A hand-pump 50 can project water into the muff when a mixture of steam and hot air is required. In further modifications a wiper blade may be arranged on each side of a distributing tube, or the distributing member is provided with side shields to prevent deflection of the discharge by outside air pressure.
Patent GB-269011-A (GB)
Title: Improvements in and relating to camera apparatus for photographing burglars or othervisitors
IPC: G03B15/00
Filed: 1926-06-18
Abstract: 269,011. Seebold, J. E. June 18, 1926. Burglar apparatus; cameras, cases for. - A secreted armoured casing 1, Fig. 3, is fitted with a camera 4 without a shutter, a bullet-proof shutter 11 being recessed in the front wall 8 of the casing which also has an exposure opening 16 therein. The casing also contains means, such as an electric motor 5, for operating the shutter, the motor circuit being closed externally as by an unseen contact switch. The circuit may also include a flashlight apparatus. The shutter 11 is driven by gearing 6, 7, 9, 10, the shutter spindle 12 having an arm 13, Fig. 4, rotating over a contact segment 15, so that on reaching the insulating portion 14 rotation ceases. Alternatively, a film camera may be fitted within the casing, and the film mechanism driven synchronously with the shutter to take a series of exposures. The front wall 8 of the casing 1 is covered with a facing plate 22, Fig. 7, having an aperture with bevelled edges 23 in alignment with the aperture 16. The lens collar 18 screws into a ring 17 on the wall 8 and is clamped by a locking ring 19.
Patent GB-401770-A (GB)
Title: Improvements in hydraulic shock dampers
IPC: B67B1/04
Filed: 1932-05-31
Abstract: 401,770. Shock - absorbers. AUBIN, E., Elmstead, West Wittering, near Chichester Sussex, and CLAREMONT, A. W., Vernon, House, Sicilian Avenue, London, (Representatives of Royce, Sir F. H.) May 31, 1932, No. 15421. [Class 108 (iii).] In shock-absorbers of the kind in which the pressure of the operating fluid, supplied by a constantly-working pump, in the shock-absorber chambers is varied by means of a relief valve the resistance of which is varied by means of a governor proportionately to the speed of the road wheels the loading of the relief valve by the governor is accomplished without the intervention of a spring. The pinion a1 driven at a speed proportional to that of the road wheels by means of the gear box drives a shaft b carrying a governor j<3> having weights mounted on pins j and operating a sleeve k by means of pins j<4> in lugs on the governor arms. The sleeve k operates through pin k<2> a sliding rod k<4> having at one end thereof a ball race k5, Fig. 2, which actuates through balls k<1> and ball race k' the ball check g<3> of a relief valve connected by conduit f<5> to the constantly working pump which is operated from the shaft b by means of eccentric and strap and connecting rod d<4>. This pump also forces fluid through conduits f<2>, f<3> to the shockabsorber chambers the pressure in which is thus varied by the relief valve according to the speed of the road wheels. Specifications 293,530, [Class 108 (iii), Springs &c.], and 372,445 are referred to.
Patent GB-458565-A (GB)
Title: Improvements in and relating to thermionic amplifier circuits
IPC: H03F1/36
Filed: 1936-06-02
Abstract: 458,565. Valve amplifying circuits. WIRED RADIO, Inc., 60, Broadway, New York, U.S.A. June 2, 1936, No. 15433. Convention date, July 9, 1935. [Class 40 (v)] In an amplifier potentials for grid bias and for reducing distortion are developed across a resistance in the input circuit connected to the cathode. The Figure shows an arrangement in which the amplifier 4 operating at low voltage has a small feed-back voltage produced by resistance 15. The amplifier 6 utilizes the whole of the grid bias resistance 19 for feedback while in the output stage feed-back voltages are taken from the potentiometer resistances 23 ... 26 across the output through condensers to the low potential points 28, 29 of the input. A resistance 20 in the cathode lead provides grid bias which is applied through resistances 31, 32, which are in shunt to the potentiometer resistances 24, 25. The pushpull stage can be multiplied by arranging valves in parallel.
Patent GB-512005-A (GB)
Title: Improvements in or relating to methods of extracting fluorine values from fluorspar ores
IPC: C01B35/06
Filed: 1938-05-24
Abstract: 512,005. Hydrofluoboric acid; fluorborides; calcium sulphate. HEISER, H. W. May 24, 1938, No. 15468. Convention date, May 24, 1937. [Classes 1(ii) and 1(iii)] Fluorine values are extracted from fluorspar containing silica by digesting the fluorspar with an aqueous solution of sulphuric acid, containing boric acid or a boric acid compound, preferably in excess, and separating the solution of hydrofluoboric acid and its soluble salts from the sludge containing calcium sulphate and the insoluble impurities such as silica present in the fluorspar. According to a modification an initial digestion is carried out employing an excess of fluorspar and after the removal of the solution, the sludge containing hydrated calcium sulphate and the excess fluorspar is subjected to a second acid digestion with a solution of sulphuric acid containing excess of boric acid or boric acid compound. This second solution after separation is used to treat a fresh excess quantity of fluorspar. The digestion may be conducted at below the boiling point of the solution, say at 70-100‹C., for 1-3 hours. When carrying out a two-stage digestion the amount of boric acid or boric acid compound present in the first stage may be in excess of that required to combine with all the fluorine' extracted in that stage by the sulphuric acid. If sodium sulphate is present in the liquid in the second stage of a two-stage digestion, the calcium sulphate will be obtained in a finely divided anhydrous form instead of the hydrated form.
Patent GB-355702-A (GB)
Title: Improvements in fluid operated feed mechanism for high speed machines
IPC: B23Q5/26
Filed: 1930-05-20
Abstract: 355,702. Lathes. JONES & LAMSON MACHINE CO., Springfield, Vermont, U.S.A.-(Assignees of Flanders, R. E. ; 41, Pleasant Street, Springfield, Vermont, U.S.A.) May 20, 1930, No. 15487. Convention date, June 4, 1929. [Class 83 (iii).] In fluid-operated feed mechanism having a metering device 31, disposed in the exhaust from the cylinder 10 during the working stroke, a byepass 40 is provided controlled by a valve 41 independent of the main control valve 20. In the form shown, the metering device is driven from the headstock spindle of a lathe, and the working stroke is effected directly by compressed air supplied at 21, and the return stroke by liquid forced from a reservoir 15 by the admission of compressed air. In a modification, the working stroke also is effected by liquid forced from a reservoir by compressed air.
Patent GB-144667-A (GB)
Title: Improvements in power hammers
IPC: B21J7/12
Filed: 1920-06-09
Abstract: 144,667. Charmet, C. April 26, 1917, [Convention date]. Power hammers. - The driving shaft e of a hammer n carries a brake drum h and fast and loose pulleys f, g, and means are provided for releasing and tightening the brake band according as the driving belt is on the fast or loose pulley. The belt is shifted from a fork operated by a treadle q which also operates the brake. The wheels h, f have weights h<1>, f<1> to counterbalance the weight of the spring hammer n which has adjustments j and k. The frame may be made in three pieces a, b, c .as shown.
Patent GB-1164642-A (GB)
Title: Composition for use in a Photographic Process
IPC: G03C11/08
Filed: 1966-09-13
Abstract: 1,164,642. Aqueous/organic liquid polymer compositions. INTERNATIONAL POLAROID CORP. 13 Sept., 1966 [15 Sept., 1965], No. 15582/69. Divided out of 1,164,641. Headings C3F and C3P. A composition comprises a film forming polymer having acid-function groups, water, a water miscible organic liquid that is a solvent for the polymer, zinc oxide or a heavy metal salt which forms a sulphide which is insoluble in water and a volatile base in sufficient quantity to establish a pH of at least 8. The compositions exemplified are (1) a copolymer of ethylene and maleic anhydride, water, ammonium hydroxide, hydrolyzed gelatine, 2-propanol, zinc acetate and modified ammonium caseinate; (3) the butyl half ester of a copolymer of methyl vinyl ether and maleic anhydride; (4) cellulose acetate hydrogen phthalate, isopropyl alcohol, ammonium hydroxide, water and zinc acetate; (5) as (4) together with hydrolysed gelatine; (6) as (1) with the caseinate replaced by a dimethyl hydantoin formaldehyde condensation polymer; (7) as (6) with the copolymer being replaced by a phthalaldehydic acid partial acetal of polyvinyl alcohol which has been prepared by treating polyvinyl alcohol with the acid in the presence of conc. sulphuric acid; (8) as (7) with zinc oxide in place of zinc acetate.
Patent GB-947496-A (GB)
Title: New dialkyl xanthine derivatives and the preparation thereof
Inventor: RIDDER RENE RACHEL DE
IPC: A61K31/00
Filed: 1960-05-03
Abstract: The invention comprises compounds of general formula: <FORM:0947496/C2/1> in which R1 and R2 represent alkyl radicals, X represents an alkylene radical, R3 and R3 represent hydrogen atoms or aralkyl (e.g. furfuryl) alkyl or alkenyl groups, or R3 is hydrogen and R4 is a cycloalkyl, dialkylaminoalkyl, alkoxyalkyl or heterocyclic radical, or R3 and R4 together form a heterocyclic ring which may be substituted; and their acid addition salts; and processes for the preparation thereof wherein (1) an appropriate 7-haloalkylxanthine is reacted with a compound HNR3R4, or (2) an appropriate 7-unsubstituted xanthine is reacted with a compound Hal.X.NR3R4, Hal being a halogen atom.  Pharmaceutical compositions comprise an acceptable carrier or diluent together with the above compounds.  Forms suitable for oral (tablets, capsules, solutions, suspensions), parenteral (solutions) and rectal (suppositories) administration are mentioned.  The compounds stimulate the central nervous system, and have spasmolytic action on smooth muscles and a positive inotropic action on the heart.  Specification 947,494 is referred to.