baber/WOPTO huggingface dataset:
Patent GB-1291043-A (GB)
Title: Vacuum switch operating mechanism
IPC: H01H9/00
Filed: 1970-01-14
Abstract: 1291043 Vacuum switches, actuating; transformer tap changers WESTINGHOUSE ELECTRIC CORP 14 Jan 1970 [21 Jan 1969] 1815/70 Headings H1N and HIT Forming part of a transformer tap changing system a vacuum switch 102 is operated by a mechanism including dashpots 150, 152 for regulating the rate of axial movement of contact 118 and an actuator 170 arranged to apply a predetermined force to open the contacts and to disengage rapidly on closing so as to apply no restraint on the contact 118 during its closing movement.  In Fig. 1A a tap selector 20, diverter switch 52 and the vacuum switch 50 are arranged to connect a selected portion of winding 14 in series with windings 12, 16 of the transformer, either adding or subtracting the voltage depending on the position of a switch 30. The selector 20 has two moving contacts 22, 24 normally interconnected by the diverter switch 52 and vacuum switch 50 through inductances 42, 44 on a common core which limit the circulating current but not the load current. To change taps the contact 58 of the diverter is moved to disengage one fixed contact, say 56 (Fig. 1B, not shown) and the vacuum switch is opened; the disconnected movable contact 22 of the selector then moves arclessly to the next tapping T4 (Fig. 1D, not shown). Vacuum switch 50 then recloses and contact 58 returns to its centre position (Fig. 1F, not shown) thus interconnecting the two taps T4, T5. Subsequently the diverter moves to disconnect the other contact 54 and the second movable contact 24 of the selector moves to the new tapping T4. Thus the vacuum switch, at which all arcing is concentrated, is required to open each time the diverter contact 58 moves, independently of which direction it moves. In Fig. 2 a motor driven shaft 172, which drives the diverter (Figs. 3, 4, not shown) and tap selector, carries to cams 204, 206 and loosely supports the actuator 170 which is held by a latch 250. A heavy spring 192 is carried by the actuator 170 and biases an arm 230 anticlockwise about a pivot 190 also on the actuator. The arm 230 is fixed to a first toggle link 222 a second link 220 being pivoted to a fixed shaft 212. The spring 192 and another 218 tend to bias the toggle to a straightened position. When shaft 172 is rotated in either direction a rise 272 or 282 on cam 204 trips the latch 250; spring 192 expands straightening the toggle linkage 220, 222 and driving actuator 170 clockwise until its forked end 184 engages a block 154 on the vacuum switch shaft 142 opening the contacts 116, 118. The contacts remain open until shaft 172 returns to its initial position when the cam 206 strikes a roller 224 on the knee joint of the toggle, breaking the toggle, restressing spring 192 and allowing latch 250 to re-engage. The cam 206 moves the actuator 170 rapidly to the position shown free of shaft 142 whereupon the contacts 116, 118 are reclosed under control of the dashpots 150, 152 by the air pressure on bellows 120 and/or an auxiliary spring (not shown).
Patent GB-673035-A (GB)
Title: Improvements in or relating to inflatable body-attachments for marine lifesaving
IPC: B63C9/125
Filed: 1950-01-25
Abstract: 673,035. Life-jackets. FRANKENSTEIN & SONS (MANCHESTER), Ltd., P., and SILVERSTONE, J. Jan. 25, 1951. [Jan. 25, 1950] No. 1911/50. Addition to 647,188. Class 77. A life-jacket, according to the parent Specification, has a keyhole-shaped neck-receiving opening 7, inflation of the appliance resisting separation of the parts defining the narrow portion 7a of the opening so that the wide portion of the opening confines the wearer's neck. The apparatus is formed from two superposed panels 5, having a keyhole neck aperture 7, the slot portion 7a of which is the same length as the diameter of the circular portion. The panels 5 are sealed round their edges by rubberised tape and on inflation form two juxtaponed chambers 13, separated by a gusset 9, which lie over the wearer's chest and a secondary chamber 14 which is adapted to lie at the sides of and behind the wearer's neck. The apparatus is secured to the wearer by tapes 21 which are attached to the front part of the neck portion and pass through the slot 7a to tunnels and loops on the rear of the appliance. The anchorage points 22, 23 of the tapes 21 on each side of the neck are further apart as measured across the surface of the inflation chambers than the length of tape 21 between them. An inflation device 18 for releasing gas from a container within one of the chambers 13 is provided. An oral inflation tube 15 and a release valve are also provided.
Patent GB-685810-A (GB)
Title: Improved apparatus for sequentially feeding individual sheets of paper or the like
IPC: B65H3/10
Filed: 1951-01-25
Abstract: 685,810. Feeding sheets. POPE, D. H. Jan. 26, 1951, No. 2021/51. Class 100 (i). Sheet-separa,tors.-A suction roller 20, rotatably-mounted on a hollow shaft 17 carried in arms 12 pivoted about a fixed shaft 13, is adapted to be lowered into contact with the top of a pile of sheets 10, is then raised with the top sheet attached thereto to a position where a gear-wheel 23 on the roller engages a constantlyrotating gear-wheel 31, whereupon the roller is rotated to feed the sheet clear of the pile. The non-rotatable hollow shaft 17 is connected to a source of suction by a pipe 19, and the roller 20, comprising a perforated metal shell, is mounted by ball-bearings on the shaft. A metal block 27 fixed on the shaft 17 has a lower arcuate surface close to the inner surface of the roller 20 formed with a recess 29 to constitute a suction chamber which is connected to the source of suction through holes in the block 27 and shaft 17. One rocker arm 12 is extended at 14 and connected to an arm 16 which is reciprocated to cause the roller 20 to be raised and lowered. When the roller is lowered to bring the gear-wheel 23 out of mesh with the gearwheel 31, rotation thereof may be stopped by a brake mechanism. Sheet-guides.-Two wires 25, engaging peripheral grooves 24 in the roller 20, are secured to cross member 26 of the arms 12, and prevent the sheet, on rotation of the roller, from curling about the roller. They are extended at the front to divert the sheet into a shoot (not shown).
Patent GB-1332518-A (GB)
Title: Automatic sheet material cutter with cutting tool angle checking means
IPC: B26F1/38
Filed: 1971-01-15
Abstract: 1332518 Cutting apparatus GERBER GARMENT TECHNOLOGY Inc 15 Jan 1971 [9 Feb 1970] 2039/71 Headings B4B and B5L An apparatus for automatically cutting sheet material, e.g. fabric layups 16, comprises a cutting tool 22, e.g. a reciprocating knife or jig-saw blade or a band knife or saw blade, movable relative to a supporting surface 14 in two co-ordinate directions X, Y, the cutter being rotatable about an axis 24, an automatic controller 44 for supplying drive signals to motors 36, 42 for driving the cutter in the two directions and to a motor 48, Fig. 3, for rotating the cutter about its axis, and further means for additionally converting the drive signals fed to the motors 36, 42 into a corresponding required angular movement of the cutter and comparing this derived angle with the actual angle taken by the cutter, means being provided for stopping the cutting of the sheet material when the difference between the derived tool angle signals and the actual tool angle signals exceeds a predetermined amount. The signals are initially fed to a digital computer 44, Fig. 3, from an input device 46, e.g. a punched card or tape reader, the signal then being fed through drivers 50, 51, 53 to the motors 36, 42, 48. The signals fed to the motors 36, 42 are also fed to analog circuits 68, 72 respectively from which they are fed to a computing circuit 76 which derives the angle at which the cutter should be set at a particular moment. Signals are also taken from the motor 48 and fed to an encoder 64 which then feeds the signals representing the actual angle of the cutter to a comparator 80 wherein the latter signal is compared with the signals representing the derived angle. If the difference exceeds a predetermined value a signal is fed to the computer to stop the motors 36, 42. The supporting surface 14 is formed from penetrable foam plastic material.
Patent GB-364360-A (GB)
Title: Improvements in covers for manholes, inspection chambers and the like
IPC: F16J13/06
Filed: 1931-01-22
Abstract: 364,360. Manhole covers. LEATHER, C. L., 23, Stanmore Gardens, Richmond, Surrey. Jan. 22, 1931, No. 2153. [Class 107.] A cover 3 for manholes, inspection chambers and the like is adapted to fit into a main frame 1 and be detachably secured by means which are normally protected by a subsidiary cover 4 adapted to fit into an aperture Z in the main cover 2. The frame 1 is provided with a seating 1c for the cover,' and main and strengthening flanges 1a, 1b. The securing means for the cover 3 may consist of pivotally-mounted bolts 2 on the frame 1 adapted to fit into, and be secured by nuts 2c to, jaws 3x which are disposed on the cover 3 at the corners of the aperture Z.
Patent GB-142188-A (GB)
Title: Improvements in apparatus for supplying liquid fuel to the cylinders of internal combustion engines
IPC: F02B75/02
Filed: 1919-01-29
Abstract: 142,188. Erickson, A. Jan. 29, 1919. Regulating.-Liquid fuel is vaporized and ignited in a cavity 12 in the head of the air-admission valve 10. The fuel is stored in the vessel 23 and flows into the hollow stem of a valve 20 through a needle valve 26 which is raised by the lever 38 acting through a wedge 39; the wedge is adjusted by a governor through a lever 41 and link 40. The fuel is warmed in the stem of the valve 20 and escapes therefrom when the lever 38 engages the collar 18. This oollar, in its downward movement, engages the collar 15 on the valve 10 and admits air to the cylinder. The air, during compression, enters the cavity 12 through holes 12a and raises the pressure therein high enough to ignite some of the fuel and thus expel the remainder. The invention is described in connexion with a two-stroke-cycle engine, but is equally applicable to four-stroke engines.
Patent GB-394270-A (GB)
Title: Improvements in and relating to dry bell gas-holders
IPC: F17B1/013
Filed: 1933-01-24
Abstract: 394,270. Gas-holders. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.- GES., Nuremberg, Germany. Jan. 24, 1933, No. 2260. Convention date, Jan. 29, 1932. [Class 54.] A dry gas-holder comprises a bell having inner and outer walls h, f movable relatively to a central guiding column d and a fixed base a carried by supports b. The bell is rendered gastight by sealing devices l, k carried by the base a and moves in contact with supporting blocks or rollers i, r, n and members p. The members p may be constructed as a horizontal strengthening ring. Instead of one guiding column, a number of columns distributed over the area occupied by the gasholder may be employed.
Patent GB-640358-A (GB)
Title: Improvements in pulse distributor circuits
IPC: H04J3/04
Filed: 1947-01-24
Abstract: 640,358. Pulse generating circuits. WESTERN ELECTRIC CO., Inc. Jan. 24, 1947, No. 2286. Convention date, Feb. 8, 1946. [Class 40 (vi)] In a pulse generating system for delivering accurately timed pulses in sequence to a number of separate outputs the precision of timing accuracy is increased by the use of a chain switching circuit wherein a lower frequency control source initiates the operation of the firsf pulse generator of the chain and a higher frequency control source terminates the pulse in this and the succeeding generators of the chain, the termination of a pulse in each generator initiating a pulse in the succeeding generator. Fig. 1 shows a pulse generating system in which the output of a crystal-controlled 1024 kc/s. oscillator 22 after squaring in unit 24 is divided down by multivibrators 26, 28, 30, 32, 34, 36 to produce controlling pulses at 256, 64, 32 and 8 kc/s, the 256 and 64 kc/s. pulses being used to control the single-stroke multivibrator chain 1-8 to produce the required sequence of pulses which may be used for sequentially gating signals through to a common load or indicator. The 32 and 8 kc/s. pulses similarly control the multivibrator chain 1<SP>1</SP>-8<SP>1</SP>. The frequency dividing chain of multivibrators 26, 38 &c., Fig. 3 (not shown), comprises a number of identical stages each comprising a pair of pentode valves in which the synchronizing signal is applied to the screen grid of the valves and the cross coupling is effected between the screen and control grids, the control signals A, B and A<SP>1</SP>, B<SP>1</SP> being derived from across the cathode resistors of the multivibrator valves and thus having a 180 degrees phase relationship to each other. Fig. 4 shows the first stages of the single stroke multivibrator chain 1-8, the 64 kc/s. control pulses from multivibrator 32 is applied to terminal c and the control pulses A, B from the 256 kc/s. multivibrator 28 are applied to terminals A, B of Fig. 4. Initially the right-hand section of valve 74 is conducting and the left-hand section is cut-off, a positive going 64 kc/s. pulse is applied to terminal C and a negative 256 kc/s. pulse to terminal A as shown in Fig. 2, this causes the multivibrator to trigger over and at a time prior to that at which the circuit would revert to its normal state if uncontrolled, a positive going pulse at terminal A causes the reversion to be accurately determined. At this reversion to its normal state a positive going pulse is applied from the cathode of valve 74 to trigger off the next multivibrator stage 102 which has been prepared by a negative going pulse applied to lead B. Thus a train of pulses - appear sequentially across the anode loads of the multivibrator as shown in curves 1-8 of Fig. 2. Specifications 510,379, 539,082 and 596,699 are referred to.
Patent GB-1074602-A (GB)
Title: Installations for the control of fixed-track vehicles
IPC: B61L21/10
Filed: 1966-01-19
Abstract: 1,074,602. Automatic train control. SIEMENS A.G. Jan. 18, 1966 [Jan. 26, 1965], No. 2398/66. Heading B7N. Vehicle positional information is passed from a vehicle to a store at a central control station and control instructions from the station are passed to the vehicle via a cable K which is connected in turn via switches F 1  ... F n  to loops S 1  ...S n  positioned in succession adjacent the vehicle track. During the-period switch F 1  is closed a signal at frequency f 1 , continuously generated on the vehicle 2 passes via the cable K to the station Z which stores an indication that a vehicle is positioned over loop S 1 . At the same time orders derived by a computer from the stored positional information and serving e.g. to ensure a safe spacing between vehicle 2 and vehicle 1 in advance are transmitted on carrier frequencies # 2 , # 3 , via the cable to the vehicle. The switches may be connected by separate cables to the control station, the cables being energized to close their respective switches in sequence or the switches may be closed via AND gates each connected to a different combination of a number of control cables connected to individual stages of a binary counter at the control station which is fed with a series of timing pulses. The neighbouring ends of the conductor loops may be disposed with wide or narrow gaps therebetween or may overlap and an auxiliary conductor coupled to all the loops and energized at a frequency # 4  may be provided. This signal will be transmitted to the station each time a switch is closed to monitor the operation of the track apparatus and also can be picked up on the train to monitor the train receiving apparatus.
Patent GB-371417-A (GB)
Title: Improvements in or relating to trigger mechanism for gasoperated machine guns
IPC: F41A9/35
Filed: 1931-01-22
Abstract: 371,417. Machine guns. BIRMING- HAM SMALL ARMS CO., Ltd., NORMAN, G., and WYKES, C. C., Armoury Road, Small Heath, Birmingham. Jan. 22, 1931, No. 2434/32. Divided on 371,410. [Class 92 (ii).] Relates to double-barrelled gas-operated machine guns having independent breech mechanisms whereby the barrels may be discharged either separately or together, and consists in providing each firing mechanism with a sear 17 movable in a horizontal plane at right-angles to the plane of movement of the trigger 12. The invention is shown applied to the gun described in Specification 371,410. The sears which are pivotally mounted in the common breech body 1 have inclines 20, Fig. 5, for engagement with inclines on the triggers 12 pivotally carried by detachable pistol grips 11 as described in Specification 371,416.
Patent GB-304700-A (GB)
Title: Improvements in and relating to high frequency electric signalling systems
IPC: H04B1/16
Filed: 1929-01-24
Abstract: 304,700. British Thomson-Houston Co., Ltd., (Assignees of Allen, H. E.). Jan. 24,.1928, [Convention date]. Thermionic relays.-The valves 1, 2, are fed from a common A.C. supply 4, the normal grid bias being such as to prevent the flow of any appreciable plate current. The input circuit 10, 14 is tuned to the high-frequency signal impulses, whilst the plate circuit 13 is tuned to the frequency of the A.C. supply 4. Incoming signals cause an increase in the average current flowing in the plate circuit of the valve 1 during the halfcycles of the power supply when the plate is at a positive potential. These impulses having the frequency of the local source 4 are passed through the second valve 2 to operate a recorder or relay 9. Resistances 11, 12' in the grid circuits of the valves prevent undesirable transient grid currents. The resistance 12 may be inserted in series instead of in shunt, as shown. The valves 1, 2 may be replaced by diodes. Specification 242,667 is referred to.
Patent GB-296625-A (GB)
Title: Double action check floor door spring
IPC: E05F3/06
Filed: 1928-01-26
Abstract: 296,625. Groom, G. W. Jan. 26, 1928. Operating doors by springs; checks.-A doubleacting floor spring and check comprises a spring e the ends of which engage rocking members g that bear against an arm h secured to the door pivot a, and an arm c on the other side of the door pivot having teeth b to engage a lever d operatively-connected to a cylinder check j. As the door swings open in either direction the arm h moves one of the rockers g to tension the spring. the spring being arranged to exert an increased power on the door as the door reaches' its closed position. The check has a screw valve n to adjust the speed of the door as it closes.
Patent GB-772634-A (GB)
Title: Liquid storage vessels
Inventor: GREENWOOD RICHARD
IPC: F24H1/18
Filed: 1955-01-28
Abstract: 772,634. Hot-water supply systems. UTTLEY, INGHAM & CO., Ltd. Jan. 23, 1956 [Jan. 28, 1955], No. 2573/55. Class 64(1) The bottom 3 of a hot water or other liquid storage vessel is outwardly domed and has an annular shoulder 4 engaged by the end of the cylindrical wall 1 of the vessel. A cylindrical extension 5 of the bottom 3 surrounds and is brazed, welded, or otherwise secured to the cylindrical wall 1 and is seamed, roll-jointed, or similarly attached to a separately formed ring 7 which supports the vessel. The ring 7 may have cut-out parts or dependent legs or may have a closed bottom to form a chamber for lagging. The wall 1 and bottom 3 are of copper or copper alloy. The ring 7 may be of steel.
Patent GB-248889-A (GB)
Title: Improvements in, or relating to, wrapping machines
IPC: B65B11/12
Filed: 1925-01-31
Abstract: 248,889. Rose, W., and Rose Bros., (Gainsborough), Ltd. Jan. 31, 1925. Packeting by wrapping-up. - Relates to wrapping-machines in which the article to be wrapped is partially enclosed in a wrapper in such manner that portions of the wrappers project beyond the ends of the articles. According to the invention. the projecing ends are operated on by punch and die members so as to define creases to aid in the subsequent final folding operations, the punch member having previously made the first end fold. As shown, a block 3, Fig. 5. partially enclosed in a wrapper so that tubular portions 5, 5a project beyond the ends of the block, arrives between punch members 6, 6a and die members 7, 7a a with recesses 8, 8a. The members 6, 6a first approach the ends of the packet and turn down portions 27, 27a of the wrapper against the ends of the article. The members 6, 6a remain in position while the die members 7, 7a approach so that triangular creases x, Fig. 6, are formed, such creases defining the edges of the folds to be made at a later stage. The article and wrapper may be sarried through the apparatus by an intermittenly rotating mould wheel, an endless chain, or an oscillating arm.
Patent GB-289749-A (GB)
Title: Improvements in or relating to the manufacture of chairs or like supports for railway rails
IPC: B21K7/00
Filed: 1928-01-30
Abstract: 289,749. Kilburn, B. E. D., (Soc. Anon. d'OugrÚe-Marihaye). Jan. 30, 1928. Chair keys ; chair plates P, produced by cutting a rolled bar into short lengths and provided with parallel jaws C, have a convergence produced in the jaws by deforming the base between the jaws. A tapered recess E is stamped in the base and comprises an isosceles triangle extending the full width of the base. The rail R is secured by taper keys K both driven in the same direction.
Patent GB-1400177-A (GB)
Title: Moulded cap for a pressurized dispenser
IPC: B65D83/16
Filed: 1974-01-22
Abstract: 1400177 Actuator caps for pressurized  dispensing containers PRECISION VALVE CORP 22 Jan 1974 [12 Feb 1973] 02970/74 Heading F1R A tamper-proof cover plate 12 is moulded integrally with a hinged actuator tab dispensing cap 10, being connected thereto by webs 40 which form a hinge so that after moulding the plate 12 may be pivoted whereby a hook 44 enters a hole 48 and is locked therein so that the plate covers the actuator tab 14. To operate the tab the edge 34 of the plate is raised to break the webs 40 after which the hook 44 may be removed from the hole 48. The socket may receive a button and is apertured at 28 for the button orifice. Alternatively the socket may receive a valve stem and be provided with a discharge orifice.
Patent GB-112692-A (GB)
Title: Improved Lathe Cutting Tool.
Inventor: MACARTHUR ALEXANDER
IPC: B23B27/08
Filed: 1917-03-01
Abstract: 112,692. Macarthur, A., (trading as Maclean & Macarthur). March 1, 1917 Tool-holders; tools.-Lathe tools are formed with a number of cutting-surfaces 2 of like or unlike formation, the tool being adjustable on a screw 3 iu the jawed end of the holder 4 and clamped in position by an I-shaped packing-block 5 and a cotter 6.
Patent GB-1260164-A (GB)
Title: Injection means for plastics material
Inventor: MCINNIS STIRLING ALEXANDER
IPC: B29C45/53
Filed: 1969-03-05
Abstract: 1,260,164. Injection moulding apparatus. S. A. McINNIS. 5 March, 1969, No. 3157/70. Divided out of 1,260,163. Heading B5A. The subject-matter is all described in Specification 1,260,166, but the claims relate to the means for injecting the mixture of plastics and filler materials into the mould.
Patent GB-1480435-A (GB)
Title: Bisphenol derivatives and uses thereof
IPC: C08L21/00
Filed: 1975-01-24
Abstract: 1480435 Aromatic polycarbonates derived from bisphenols EXXON RESEARCH & ENG CO 24 Jan 1975 [11 Feb 1974] 3174/75 Heading C2C [Also in Division C3] The invention comprises compounds of the formula wherein X is -S-, R and R<SP>11111</SP> are H, (C 1 -C 18 ) alkyl or aryl, A is (C 1 -C 16 ) alkylene or arylene, R<SP>1</SP> is (C 4 -C 12 ) tert-alkyl or (C 3 -C 12 ) sec-alkyl, R<SP>11</SP> is H, R<SP>111</SP> is H or (C 1 -C 5 ) alkyl, R<SP>1111</SP> is CH 3  or C 2 H 5 , Y is carbophenoxy which may be substituted, Z is phenoxy which may be substituted or a group of the formula and n has a value from 1 to 10. They may be obtained by reacting an appropriately substituted bisphenol either with phosgene and subsequently or simultaneously with a phenol, or with diphenyl carbonate. They are useful as stabilizers for polyolefins.