baber/WOPTO huggingface dataset:
Patent GB-417215-A (GB)
Title: Improvements in electric discharge apparatus
IPC: H01J13/16
Filed: 1933-07-03
Abstract: 417,215. Electric discharge apparatus. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, Võsteras, Sweden. July 3, 1933, Nos. 18812 and 18813. Convention dates, July 4, 1932 and July 9, 1932. [Class 39 (i).] In electric discharge apparatus such as a rectifier, wherein the portion of the current path most adjacent to the anode is surrounded by an insulating-tube, one or more resistance bodies are mounted within the tube, of sufficiently high resistance to support between the ends thereof the entire normal working voltage between anode and cathode without overheating, and at the same time of sufficiently low resistance to permit a leakage current to pass to the gaseous conductor to control the voltage distribution therein. The main vessel 1, Fig. 1, of the apparatus is made of iron with an insulated cathode vessel 3 and cooling-jackets 4. An ignition anode 5, excitation anodes 6, and main anodes 7 are provided, the main portion of the current path from each anode to the cathode being surrounded by an insulating- tube 8 made of porcelain, glass or quartz, projecting from the main receptacle and closed at its upper end by a metal cap 9 with gas-tight sealings at its junction with the tube 8 and anode insulator bushing 10. The tube 11, of high-resistivity conducting-material which is arranged inside the tube 8 consists, for high voltages, of a material having a resistivity of the order of 1 ohm-centimetre, for example silicon carbide. The upper end of the tube 11 terminates at a short distance from the anode 7, and can be kept at an appropriate voltage by connecting the metal cap 9 either directly to the anode or, as shown, to a suitable point of the source of current to the anode, so as to have, at least during the blocking-interval, a negative potential with respect to the anode. A control voltage may be applied to the lower end of the resistance tube by a conductor 13, or upon a separate grid 14 mounted beneath it. Fig. 2 shows a modification wherein the anode 22 is inside the main vessel 21 of the rectifier and is surrounded by an insulating-tube 28, the resistance body 23 mounted inside the tube 28 having the cross-section shown in Fig. 3. Leads 24, 25 secured at the upper and lower ends of the body 23 by means of metal discs 26, 27 which distribute the current are connected to potential sources. In another modification, Fig. 5, the resistance body consists of a thin lining 53 of material of comparatively low resistance, such as graphite, on the inside of the insulating-tube 58. In order to obtain the best working conditions the outer insulating- tube may be surrounded by a heat-insulator 16, or a heating-device, to keep its temperature at an appropriate value.
Patent GB-146980-A (GB)
Title: Improvements in metal rolling mills
IPC: B21B21/04
Filed: 1920-07-06
Abstract: 146,980. Feller, W. March 28, 1919, [Convention date]. Rolling tubes; rolling-mandrels.-The feedspindle a. of a step-by-step rolling mill is reciprocated by fluid from a pump g driven from the rolls w. The piston f is reciprocated by a crank e and gearing e<2>, e<3>, the crank-shaft e' having a quickpitch screw in threaded engagement with the gear e<2> which can be moved axially to adjust the angular position of the crank in relation to the rolls. Flexible or like pipes h, h<1> connect the ends of the cylinder g with valves k<1>, k<2>, k<3> capable of being moved by one handle into the position shown in Fig. 4 or Fig. 5. In the first position, the piston b reciprocates in unison with the piston f, but in the second position it is held to the left, as shown in Fig. 1, owing to the action of the non-return valve l for removal of the work &c. without stopping the rolls. The cylinder d is gradually fed forward by a rack and pinion. Relief valves m, o or passages may be provided. The piston b has a threaded rod c to impart rotation to the mandrel in the usual way.
Patent GB-201182-A (GB)
Title: Improvements in machines for grinding hollow stamping tools and cutting dies
IPC: B24B19/20
Filed: 1923-07-23
Abstract: 201,182. Wehrhan, F. K. July 22, 1922, [Convention date]. Disc and wheel apparatus; spindles and spindle mountings.-A machine for grinding hollow stamping-tools, dies, &c. comprises a frame a upon which is mounted a hollow member b carrying radial and thrust ball bearings for a grinding- spindle w<2>, and having secured thereto a worktable c. Secured to the table is a column d on which is adjustably mounted a head e carrying a ball bearing L. The spindle w<2> has a conical socket adapted to receive a mandrel S upon which the grinding - tool is mounted; the upper end of the mandrel is tapered and fits into a conical recess in a bush n, which runs in the bearing L with an interposed dust-excluding disc u<1>. On the spindle w<2> is a collar m; this collar prevents sliding down of the spindle, and, being above the upper bearing, protects this from dust. The table c has a neck H in which are three openings giving access to the interior and allowing ejection of dust by the rotation of the collar m. In order to allow work to be changed the head e is removed.
Patent GB-136598-A (GB)
Title: Improvements in or relating to Coin Freed Delivery Apparatus.
Inventor: KARCK GEORGE STIRLING
IPC: G07F11/06
Filed: 1918-11-18
Abstract: 136,598. Karck, G. S., and Varndell, S. H. Nov. 18, 1918. Delivery of articles stored on supports released in succession.-In coin-freed delivery apparatus of the type in which the articles are stored on shelves adapted to be released one at a time, the shelves b<1>, b<2> are pivoted to the casing at c<1>, c<2> and are held in the operative position by catch levers g<1>, g<2> pivoted on the casing and engaging lugs d<1>, d<2> on the shelves. The catch of the lowest loaded shelf b<1> is released to allow the shelf to drop and the article to be delivered by means of a rod r, which, after the insertion of a coin, can be rotated to bring a pin s<1> thereon to bear against and operate a link m' pivoted to the catch. The corresponding links m<2> of all the shelves but the lowest one are held out of the path of their respective pins s<2> by means of links m<2>, pins o<2> on which rest on the shelves immediately below. As each shelf is released, therefore, it places the catch of the next shelf above in a position to be operated by the rod r. All the shelves are restored to the operative position by means of a sliding rod 2, lugs 3 on which engage pins f<1>, f<2> on the shelves, and which is operated by an external handle and lever mechanism.
Patent GB-318140-A (GB)
Title: Improvements relating to rotary glass blowing machines
IPC: C03B9/22
Filed: 1929-06-20
Abstract: 318,140. Bullman Machine Co., Ltd., (Assignees of Hillmann, H.). Aug. 28, 1928, [Convention date]. Blowing.-Relates to a rotary glass-blowing machine of the kind which comprises a number of mould units carried by arms that radiate from a central vertical column. According to the invention, the central column is dispensed with and the units are mounted on a rotating annular member. The cams that control the working-operations of the units are disposed below the level of the units so as to leave a, central space, unhampered by any column, to which access can be obtained from below the base of the machine. The machine is shown in sectional elevation in Fig. 1<a>, and the lower part of it is shown in plan in Fig. 2. The base of the machine is an annular frame 4 mounted on wheels 5 and formed with a circular groove 6 in which a base ring 8 revolves. The ring 8 supports the moulds and their operating-mechanism by means of a number of vertical frames 9. Each frame comprises a box 10 and two parallel vertical members 11, 12 which are connected at their upper ends to a central-retaining ring 14. The cams that control the working-operations consists of cams 307 on the upper surface of the main frame 4, and other cams 40, 121, 208, and 209 which are attached to the inner surface of the main frame, entirely out of the way of the machine itself. This arrangement of cams inside the main frame allows them to be made sufficiently large to permit easy passage of the cam rollers over transition points. The cams are also in a cooler position, and the machine operator can obtain access to them from a pit beneath the machine when adjustment or replacement is necessary. The machine is of the type which gathers charges of molten glass by suction from a fixed forehearth 2, Fig. 2. Rails 5<1> on which the machine is mounted are arranged at an angle with the front wall of the furnace, so that they approach the furnace wall while they are dipped in the glass. This construction assists in moving the glass from the forehearth back into the furnace. Specifications 287,067, 315,347, and 318,138 are referred to in the description.
Patent GB-1382535-A (GB)
Title: Endless power transmission belt
IPC: F16G5/06
Filed: 1973-04-19
Abstract: 1382535 Laminates DAYCO CORP 19 April 1973 [24 May 1972] 19024/73 Heading B5N [Also in Division F2] A U-belt 10 comprises an outer tension section 11 including a plurality of fabric layers 14 impregnated with an elastomeric material; an adjacent load-carrying section 12 comprising a layer 15 of highly resilient elastomeric material and having load-carrying elements 16 embedded therein; and an inner compression section 13 having a plurality of layers including a stiffening layer 20 adjacent said load-carrying section and a plurality of fabric layers 21, said stiffening layer comprising an elastomeric material with discrete fibres 22 embedded therein, the fabric layers on the compression section each having warp 24 and weft 25 threads disposed at an angle of between 105 and 120 degrees with each other. The fabric layers 14 and 21 may be identical and may be woven from rayon, nylon, polyester or cotton fibres. The load-carrying elements preferably comprise a helically wound polyester cord comprising a plurality of twisted strands 17, the strands and the exposed surface of the cord being coated with an isocyanate cement. The fibres 22 in the stiffening layer 20 may be arranged perpendicular to the longitudinal axis of the belt, transverse to said axis or at any suitable angle, the fibres being of cotton, rayon, nylon or polyester. The elastomeric material is preferably neoprene.
Patent GB-1209090-A (GB)
Title: Improvements in and relating to numerical display apparatus
IPC: H03K21/08
Filed: 1968-04-23
Abstract: 1,209,090. Indicating devices for counters. RICOH K.K. 23 April, 1968 [24 April, 1967], No. 19069/68. Headings G4A and G4H. The four binary stages of a counter decade DC are connected so that their outputs have the values 1, 2, 4 and 2, each stage being connected to light the corresponding number of lamps in an array L of nine lamps. The lowest value stage FF 1  lights the centre lamp, the next FF 2  lights the top and bottom middle lamps, the next, FF 3 , lights the four corner lamps and the fourth stage FF 2  lights the left and right middle lamps.
Patent GB-120923-A (GB)
Title: Improved Process of and Apparatus for Refrigerating.
IPC: F25B5/00
Filed: 1918-11-20
Abstract: 120,923. Apeldoornsche Maschinenfabriek en Metaalgieterij voorheen L. Landaal. Nov. 20, 1917, [Convention date]. Refrigerating, compression machines and processes for.-The refrigerant is evaporated in stages, the outlet of the high-pressure evaporator being connected with a separator, from which the evaporated refrigerant passes to the compressor and the unevaporated refrigerant to a low-pressure evaporator. The high-pressure gas is admitted to the compressor after it has been filled with lowpressure gas, and the two are compressed together and discharged to the condenser. A regulating- valve 1 controls the flow from a condenser to the high-pressure evaporator 2, and a float-valve 6 controls the flow to the low-pressure evaporator 7, the valve 6 being arranged to open also under an excessive pressure of gas in the separator 3. The low-pressure gas is admitted to the compressor cylinder 12 through a port 9, the interior of the piston 10, and a suction valve 11 in the end of the piston, while the high-pressure gas is admitted through ports 13 uncovered by the piston at the end of its stroke. The admission of low-pressure gas may be cut off as soon as the high-pressure ports are opened. The distance between the high and low pressure ports and the length of the piston are such as to prevent leakage of highpressure gas to the low-pressure pipe 8. The lowpressure gas may be admitted to the cylinder directly, instead of through a valve in the piston, and the arrangement may be applied to doubleacting compressors.
Patent GB-737618-A (GB)
Title: Improvements in or relating to ejector devices
IPC: F04F5/10
Filed: 1953-07-10
Abstract: 737,618. Ejectors. WARD, A. J. C. July 9, 1954 [July 10, 1953], No. 19220/53. Class 71. A device adapted to have a stream of liquid passed through it from a source to suck liquid from a container comprises a one-way valve 5 which prevents liquid flowing from the container to the source. The valve 5 is positioned between the source inlet 4 and the container branch 2 and comprises a needle valve normally open and resting on a shoulder 10 but which may seat on a shoulder 11, having a transverse bore 7 and an axial bore 8 which forms the jet. To fill the container the device may be inverted and the outlet 3 connected to the source, the valve 5 then closes the outlet 4.
Patent GB-147192-A (GB)
Title: Means for preventing the escape of oil from the oil tanks of submarines
IPC: B65D90/50
Filed: 1920-07-07
Abstract: 147,192. Bauer, G., and Kramer, F. April 6, 1916, [Convention date]. Drawings to Specification. Submarine vessels.-In order to prevent the escape of oil from the external oil tanks of submarine vessels a differentia pressure device is provided which automatically maintains a lower pressure within the tanks than that of the, water surrounding the tanks. This device is interposed between the oil tanks and the water surrounding them, and is under the influence of the pressures inside and outside the tanks. The device may take the form of a differential piston arrangement, which is under the influence of the pressure in the oil tanks and the pressure of the surrounding water, which water after operating upon the said device passes into the interior of the tanks to replace the oil which is withdrawn or which leaks therefrom. Alternatively, two pairs of enclosed gear wheels meshing with each other after the manner of oil pumps, or ether differential pump arrangements, may be used.
Patent GB-480575-A (GB)
Title: Improvements in or relating to suspension ears for trolley conductors of electric traction systems
IPC: B60M1/24
Filed: 1937-07-13
Abstract: 480,575. Suspending conductors. WATSON, T. M. July 13, 1937, No. 19355. [Class 36] A trolley wire suspension ear comprises a body portion 5 having means, such as an internally screw-threaded socket 6, for attachment to a suspension insulator and formed with a longitudinal web 7 having flanges 8 on its opposite sides. Clamping cheeks 9, 10 having longitudinal ribs 11 for engagement over the flanges 8 and formed at their lower edges into jaws 13 for gripping the trolley wire 12 are secured together and to the body portion by screws 14. To prevent relative longitudinal movement . between the clamping cheeks and the body portion the web may be formed with a projection 15 which engages a slot in the flange 11 of the cheek 9. The jaws 13 may be of the form shown or they may encircle the trolley wire, in which case the edges of the clamping cheeks are preferably chamfered towards their ends.
Patent GB-596527-A (GB)
Title: Improvements in or relating to automatic speed change devices of the free-wheel type
IPC: F16H61/02
Filed: 1945-07-30
Abstract: 596,527. Variable-speed epicyclic gearing. WATSON, C. D. July 30, 1945, No. 19381. [Class 80(ii)] Relates to free-wheeling two speed bicycle, winding engine or like gears of the kind having a centrifugally actuated pawl on the driven member alternatively engageable with inner and outer driving ratchet members revolving at different speeds, and provides locking means whereby speed changes can only occur upon free-wheeling. As shown, applied to a bicycle rear hub in place of the normal free wheel, a driving sprocket 1, Fig. 3, carries planet pinions 9 meshing a fixed sun 6 and a rotatable annulus 7. Direct drive external and overdriving internal ratchet teeth 10, 11, Fig. 2A, on the sprocket 1 and annulus 7 respectively are alternatively engageable by each of two diametrically opposed centrifugal pawls 3a pivoted on the driven hub 2. The pawl flyweights 4a tend to move the pawls into engagement with the teeth 11 against the pressure of springs 5a mounted in the flyweights. The free end of each spring 5a interferes with the free end of the opposite flyweight and the weights are thus prevented from moving outwards until the pawls are forced inwards on freewheeling and release the springs. In a modification, one pawl 3c, Fig. 2B, alone is centrifugally actuated, being connected by a spring 14 to linked flyweights 4c. The latter are prevented from moving outwards against springs 5c by a catch 13 on the other pawl 3d, which is spring pressed into engagement with the outer teeth and is forced inwards to release the catch on freewheeling. The gearing may be arranged to give direct drive and an underdrive. A number of two speed units may be arranged in series or parallel, friction or other means being provided in the former case to maintain the intermediate units at output speed during a long freewheeling interval.
Patent GB-1362734-A (GB)
Title: Manual self-instructional and self-testing apparatus
IPC: G09B3/08
Filed: 1972-04-26
Abstract: 1362734 Educational appliances J R HARTE 26 April 1972 [7 May 1971 29 July 1971 27 Sept 1971] 19453/72 Heading G5G A teaching aid comprises a holder for a question sheet having multiple choice answers indicated by zones which are positioned above holes or recesses in the holder when the sheet is in place in the holder. The holes or recesses are formed so that when a stylus with a shaped tip is used to pierce the indicator zones a hole of small, intermediate or large size results. Different hole sizes thus produced in the sheet can be used to show whether the answer is correct, partially correct, or incorrect. As shown, the holder 101 is formed with circular recesses 103 of three different depths and is used with a stylus having three cross-sectional shapes on the tapered portion of its shaft, so that a shallow penetration, e.g. at position 121, produces a triangular hole in a sheet 102, an intermediate penetration produces a circular hole and a deep penetration produces a square hole (Figs. 4 to 7, not shown). The holder may be formed with recesses or holes of different shapes or sizes, or combinations thereof, to give the desired effects and the stylus may have different tip configurations, several such modifications being described with reference to Figs. 8 to 44 (not shown). The answer sheet may have a detachable portion which can be removed and retained as a record of a student's performance, and the holder may incorporate a frame shaped, e.g. hexagonally to accommodate the sheet in a number of different positions. The stylus may carry markings to give a visual indication of the depth of penetration.
Patent GB-1269989-A (GB)
Title: A workpiece contouring numerical control device
Inventor: ALANCHE PIERRE
IPC: G05B19/409
Filed: 1969-04-16
Abstract: 1,269,989. 989. Programmed control of machine tools. SOC ALSACIENNE DE CONSTRUCTIONS ATOMIQUES DE TELECOMMUNICATIONS ET D'ELECTRONIQUE. April 16, 1969 [April 17, 1968], No.19483/69. Heading G3N. A workpiece containing numerical control devices incorporates memories and registers which determine the contour of workpieces to be machined and according to the radius of the selected tool, the path to be followed by the tool. As shown, an 8-track tape bearing contourdetermining information is fed through a photoelectric reader 7 into a register 8 and manual valves are set in a console 1. The addresses from register 8, through a shift register 11, and console 1 are held in a passive memory 4 which is used to enable dimensional registers 17-22 and passive function registers 23-29. The dimensional registers comprise address sub-registers 17.1-22.1, connected to memory 4 and digital data sub-registers 17.2-22.2, connected to a transcoder 16 and a register 5 and contain X, Y, Z co-ordinates of the final point with respect to the initial point in a portion of the machining path and the co-ordinates of the centre of a circular interpolation. The passive function registers comprise address sub-registers 23.1-29.1 and digital data sub-registers 23.2-29.2 which contain, respectively, feed-rate, sequence, preparatory function, tool selection, tool correction, auxiliary function and spindle speed. The sub-register 23.2 is connected to the manual register 5 and the others to the manual register or an AND-gate 15 responsive to register 8, switch 12 and register 5. A switching logic connects registers 30-40 to provide a number of circuits for straight or arcuate interpolation wherein registers 30-36 act as co-ordinate registers, 31-37 as overflow registers and 38, 34, 40 as comparator or forward-backward counters. Adders 42-52 are inter-connected by the switching logic to interrelate the interpolating function. Digital-toanalog converters 53-55 converts the interpolated data into analog voltages for X, Y, Z co-ordinate movements of the machine tool. A quartz clock 57 drives the transcoder 16 through a cycle generator 58, the switching logic 41 and a speed generator 59 with a control 60. Positional feedback is derived from transducers 61-63.
Patent GB-183141-A (GB)
Title: Carton closing machine with automatic stop mechanism
IPC: B65B51/18
Filed: 1922-07-15
Abstract: In a machine for completing the closing of cartons, the cartons having the flaps coated with silicate of soda and folded down, are fed into the machine and the flaps are retained in position until the adhesive has set.