baber/WOPTO huggingface dataset:
Patent GB-198046-A (GB)
Title: Improvements in and relating to continuous current dynamo electric machines excited with series winding
IPC: B60L15/04
Filed: 1922-02-23
Abstract: 198,046. Archibald, R. D. Feb. 23, 1922. Exciting.-The series winding 15 of a series or compound-wound machine is connected through a rectifier 10 to tappings 2, 3 on the armature 1 of the machine or of a machine working in conjunction therewith. By a suitable arrangement of switches the winding 15 may be connected either to the armature 1 or to the rectifier 10 or to both. An adjustable transformer 7 is preferably connected between the armature tappings 2, 3 and the rectifier 10. The brush 13 on the rectifier 10 may be dispensed with and the middle point of the transformer secondary 9 connected directly to the winding 15. In this case the switch arm 8 is arranged to cut out turns simultaneously at both ends of the primary 7. More than two tappings may be provided in, the armature, the transformer and rectifier being constructed for the number of tappings used. In place of the transformer 7 an auto-transformer may be used. The transformer and rectifier may be replaced by a rotary converter, which may be mounted on the same shaft as the dynamo-electric machine. In the application of the invention to tramear motors, one rectifier may be employed connected at one side to the series windings of all the motors and at the other side to tappings from the armature of one of them.
Patent GB-538896-A (GB)
Title: A new or improved snow sweep
IPC: E01H5/06
Filed: 1940-03-21
Abstract: 538,896. Snow ploughs. ROADLESS TRACTION, Ltd., and JOHNSON, P. H. March 21, 1940, No. 5323. [Class 107] A snow plough for attachment to. tractors consists of a blade or Loard 1 fitted at an angle at the rear of the vehicle on arms.2; 3 which are rockably-mounted on a cross-shaft 6 between the vehicle frame members 7, 8. The extended ends of the blade 1 are tied to the vehicle by strainer-wires 9, 10. A winch 13 is provided for raising the device clear of the ground by means of a rope 14 connected at 16 to a cross-beam 17. The upper and lower edges of the blade are reinforced by angle-irons 18, 19.
Patent GB-1508242-A (GB)
Title: Furniture having parts linearly adjustable
IPC: A47C3/18
Filed: 1976-02-11
Abstract: 1508242 Telescopic seat support SEBEL Ltd 11 Feb 1976 05450/76 Heading A4J A telescopic seat support is adjusted in length by depressing a rod 8 to draw a one piece plastics material collet 17, provided with upwardly and outwardly extending fingers 18, downwardly off a taper 6 at the end of the inner tube 3 causing disengagement of the edge 29 of the collet from circumferential grooves 5 in the outer telescopic member 4. The collet allows relative rotation of the two members. Preferably, the collet is provided with radially outwardly extending fins 34 for guiding the collet as it is retracted by the rod.
Patent GB-1101054-A (GB)
Title: Film feeding arrangement
Inventor: CROOKS JOHN LEWIS
IPC: G03B17/26
Filed: 1964-02-10
Abstract: 1,101,054. Feeding sheets. KODAK Ltd. 4 Feb., 1965 [10 Feb., 1964], No. 5457/64. Heading B6B. Apparatus for feeding sheets 20 of film to a processor 26 comprises a platen 10, pusher members 12 movable over the platen to feed the sheets towards a guide 22, and a shoot 24 in the platen adjacent the guide, through which the sheets drop vertically. The apparatus is enclosed in a light-proof easing 30 with a cover 28, and is mounted on the processor 26. The pusher members 12 may be V-shaped bars, or round rods having feed ledges 56, Fig. 3 (not shown), therein, and are secured at each end to an endless chain 14 mounted on sprockets 16 driven intermittently by a motor 17. Film sheets 20 of assorted sizes are laid on the platen 10, with the trailing edge of each sheet engaging a bar 12, and as each sheet engages the guide 22 it rides up the guide to a substantially vertical position, and finally drops through a slot in the platen into the shoot 24. Guides 32, 36, Fig. 2 (not shown), lead the sheet between feed rollers 38, and a further guide 40 diverts the sheet horizontally between further feed rollers 42 into the processor 26. The guide 22 is inclined at eighty degrees to the platen, and movement of the sheets up the guide is facilitated by an air-blast 49 from a nozzle 50. Infra-red rays from a lamp 44 are directed across the shoot 24 on to a cell 45 in the circuit of the motor 17; when the presence of a sheet is detected, the motor is stopped, and is later re-started when the sheet has passed through the shoot. A further switch 46 in the motor circuit may indicate the presence of two superposed sheets between the rollers 38. Means to indicate the correct placing of small sheets 20 on the platen 10 to ensure that they will cut the infra-red rays in the shoot 24, comprises a groove 48 in the platen. In Fig. 4 (not shown), the guide 22 and platen 10 are ribbed at 55, 54 respectively.
Patent GB-649194-A (GB)
Title: Improvements in or relating to snap-action electric switch devices
IPC: H01H13/28
Filed: 1948-02-24
Abstract: 649,194. Thermal switches; actuation of switches. ROBERTSHAW-FULTON CONTROLS CO. Feb. 24, 1948, No. 5528. Convention date, March 14, 1947. [Class 38(v)] A switch is tripped by a temperature or pressure sensitive means which increases the compression of a spring before unlatching an operating member, so that the switch contacts are opened with a snap action. The switch comprises three pivoted levers; the first, a lever 28, is pivoted at 32 and has an insulating strip 26 carrying a loosely mounted contact member 24; the second, a lever 40, is also pivoted at 32 and has an extension 44 forming a latch member; and the third, a lever 48 is pivoted at 52 and has a latch 60 engaging the member 44. The contacts 20, 24 are held closed by a spring 56 mounted between the levers 28, 40, when the member 44 on the lever 40 is retained by the latch 60, so as to hold the lever 40 against the pressure of a spring 54 mounted between the levers 40, 48. A distortable capsule 62, which is connected by tube 66 to a fluid containing temperature sensitive bulb or to a source of pressure, has a button 68 engaging an adjusting screw 70 on the lever 48. Thus, as the pressure in the capsule 62 increases, the spring 54 is at first compressed to a greater extent, so that when a predetermined temperature or pressure is reached and the latch 60 is disengaged from the member 44, the lever 40 is moved rapidly by the spring 54 and its end 47 strikes the lever 28 to open the contacts with a snap-action. The contacts 20, 24 remain open until the levers are restored to their original positions by means of a re-set button 72, which when depressed manually, moves the lever 40 to a position where it is relatched if the pressure in the capsule has fallen sufficiently. The button 72 is carried by the switch cover 12 which has an insulating lining 22 surrounding the contact members.
Patent GB-749832-A (GB)
Title: Improvements in or relating to electrical control circuits
Inventor: ROBINSON THOMAS PHILIP
IPC: B03C3/66
Filed: 1953-02-27
Abstract: 749,832. Protective arrangements for supply systems for electrical precipitators. STANDARD TELEPHONES & CABLES, Ltd. Feb. 19, 1954 [Feb. 27, 1953], No. 5569/53. Class 38 (4). Simultaneous conditions of low voltage and high current, say, in a rectifier system TI, MR1 supplying a precipitator -indicative of flashover or arcing therein-cause opera- RE1 tion of current relay - and 2 RE2 voltage relay -, with conse- 1 RE3 quent operation of relay '-- 4 which, by its contacts RE3.3, RE3.4, effects a further voltage reduction to an arc extinction value by de-energizing the D.C. excitation windings of saturable reactors LS1-LS6 in series with the primary windings of the mains transformer T1 and simultaneously energizing the excitation windings of further saturable reactors LP1-LP6 which shunt the primary windings of the transformer. The voltage relay is controlled by a normally non-conducting cold-cathode valve CC which, however, conducts upon flashover in the precipitator, due to consequent reduction of hold-off voltage across bias potentiometer R2. Contact RE3.1 closes RE3 a holding circuit for relay - and establishes 4 a supply to a timing circuit C1R3, independent of contacts RE1.1, RE2.1, which are both open when the flashover is cleared. The timing circuit eventually operates a further relay RE 4 /3 which de-energizes RE 3 /4 and so effects a return to normal supply conditions. Specification 684,024, [Group XL (a )], is referred to.
Patent GB-302523-A (GB)
Title: Improvements in and relating to electric motors
IPC: H02K1/28
Filed: 1928-02-22
Abstract: 302,523. Feldman, E. D. Feb. 22, 1928. Pole-pieces; cores.-The poles a - - a<2> of the armature of an electric motor are separate from each other and from the spindle c<x> and are formed so that the armature coils d may be slipped on to the poles before assembly, the coils and poles being maintained in position by positioning carriers located at each end of the armature. The poles, which may be laminated or solid, are provided with a projection b - - b2 as shown in Fig. 5, each of such a width than when the spindle is passed through holes c therein, the total width occupied by the projections is equal to the length of the armature pole face in the axial direction. To assemble, the coils d are placed on the poles, one arm of a carrier e, f is inserted between the pole and the coil at each end, and the spindle is then passed through the holes c, c' in the extensions and carriers respectively. Rivets or bolts g<x> secure the poles and carriers together, and the laminae of the poles are secured by rivets h'.
Patent GB-165720-A (GB)
Title: Improvements in electrical apparatus for railway signalling
IPC: B61L23/00
Filed: 1920-05-21
Abstract: 165,720. Tyer & Co., Ltd., and Downes, F. May 21, 1920. Miniature signals and indicators. - A single needle indicator with two coils is arranged in conjunction with a polarized relay in the line wire to indicate at an intermediate point the direction in which a train is passing over a single-line track. The coils of the polarized relay 2 are connected in the line wire AB, and from this coil a lead 10 is taken to both coils 3, 4 of the singleneedle indicator 1. The armature of the relay 2 connects these coils alternatively to earth. A positive or negative current sent from station A causes the indicator 1 to move to one side, and currents from station B cause the other indication to be given.
Patent GB-1023765-A (GB)
Title: Improvements in or relating to devices for sucking liquid,air and solid particles
IPC: A61M1/00
Filed: 1964-02-11
Abstract: 1,023,765. Rotary pumps. S. G. ERIKSSON. Feb. 11, 1964 [Feb. 12, 1963], No. 5703/64. Heading F1F. A flexible vane pump for sucking air, liquid and solid particles, e.g., air, blood, saliva, bone, metal and dust particles in dental operations, comprises an additional inlet 8 in an insert located after the pump outlet 5 and before the pump inlet 6 through which water is supplied for cleansing and lubricating the pump. The radius of the insert before the inlet 8 is less than that after it so that water is sucked into the pump by the rotor vanes 3. A line 9 connected to the inlet 8 and formed with a funnel 10 which may be placed below a water cock (not shown) includes a pressure switch 11 which operates to start the motor driving the pump when the water pressure is adequate. Thus the system may be started by opening the water cock. In a modification, the line 9 may be connected to a container into which the pump outlet 5 opens so that part of the water is re-circulated. A switch at the bottom of the container operates to start the pump motor when the water in the container reaches a predetermined level.
Patent GB-779714-A (GB)
Title: A suspension for mounting one-way ploughs on tractors
IPC: A01B3/36
Filed: 1955-02-25
Abstract: 779,714. Agricultural implements. CLAUSING, H., [trading as CLAUSING, R. H.]. Feb. 25, 1955 [Feb. 27, 1954 ; March 10, 1954 ; Aug. 4, 1954], No. 5759/55. Class 6(1). A one-way plough comprises two plough beams each provided with a plough-share and connected to the three point linkage of a tractor, a holding device to hold each plough share in a working position, a device for supporting and locking each plough share in the raised position and an adjustable device operable to vary the distribution of the weight of the raised plough share between the tractor and working share. As shown each plough beam 33 is mounted on a casting 32 which is pivoted on a casting 30 pivotally mounted on a frame 25 secured to the three-point linkage 24, 26 by means of a shaft 29. Rotatably supported on an arm 34 of casting 30 by a pin 35 is a lever 36 rotatably connected with a tubular body 39 carrying a rod 40 which is movable in a tube 47 pivoted to the top link 24 by means of a pin 50. The end of the rod 40 is hook-shaped and is engageable with a hand operated spring catch 56. The lever 36 is provided with a hook 37 which together with an arm 45 bears against a shaft 28 to secure the plough beam in its working position as shown in Fig. 5. For raising the working plough share the three point linkage is raised causing the frame 25 to swing about the shaft 28 to swing the shaft 29 downwardly, disengaging the hook 37 and arm 45 from the shaft 28 and pushing the rod 40 into the tube 47 where it is held by the catch 56 at the same time raising the plough into the transport position. To lower the plough the catch 56 is moved out of engagement with the rod 40 by hand. The pivot 35 of the arm 34 can be adjusted selectively into any one of the bores 62 to change the weight of the raised plough share transmitted to the tractor through the upper link.
Patent GB-1453822-A (GB)
Title: Method for the inductive heating of metallic melts
IPC: F27D11/06
Filed: 1974-02-08
Abstract: 1453822 Induction heated metal melting furnace ASEA AB 8 Feb 1974 [9 Feb 1973] 05797/74 Heading F4B [Also in Division H5] In induction heating of molten metal, level differences 12 on the surface of the melt are locally suppressed by interposing a plate of low resistivity 6 between the induction coil 5 and the melt 11 to permit tapping of surface slag 13. A furnace has an open loop pancake induction heating coil 5 beneath the bottom 2 giving rise to a ridge 12 on the surface of a thin layer of molten iron 11 in the furnace. Pulverized coal is added via pipe 9 and iron ore concentrates and slag forming materials are added via pipe 10 to the slopes of ridge 12. Slag 13 thus forms in the central dip of the surface of the melt. When it is desired to draw off the slag via outlet 3, 4 in the wall 1 of the furnace, a water cooled copper plate 6 is inserted between the coil and the furnace adjacent the outlet. The waveforming electromagnetic field is thus shielded from the melt, wave 12 is locally suppressed and slag flows out through the outlet.
Patent GB-949712-A (GB)
Title: Improvements in or relating to a method and apparatus for maintaining sterilised perishable liquids in a sterile condition during the bulk transportation of the liquids in tanks
IPC: B61D5/00
Filed: 1961-02-16
Abstract: 949,712. Tank wagons. H. J. HEINZ CO. Feb. 16, 1961 [Feb. 17, 1960], No. 5846/61. Heading B7L. A railway tank car for the bulk shipment of sterilized perishable products of liquid character, comprises an elongated tank 2, Fig. 3, provided with a central dome 3, a bottom discharge opening 7 below the dome, a valve 8 for the opening 7 controlled by a rod 9 from a hand wheel 11 on the dome, an enclosure 5 projecting downwardly from the opening having a removable closure plate 13 and means whereby a sterilizing fluid (alcohol) may be maintained within the enclosure to form a sterile seal for the valve during transit of the wagon. Alcohol can be supplied to the enclosure from a coupling 17 through a valve 16 and a pipe 15 secured in the plate 13. The alcohol splashes about to wash the bottom of the valve and the tube 15 remains full of the liquid to seal the valve 16. When it is required to empty the tank, a plug 13a is removed from the plate 13 to drain the enclosure and the plate then removed. The flange 6 of the enclosure is then connected to a coupling connectible to a discharge hose, the coupling being connected through a valve to a steam supply whereby steam can be supplied to the enclosure and hose to sterilize them prior to discharge of the tank. The dome is provided with spray nozzles 25, 25a and 25b connected to a manifold 26 to which a sterilizing fluid, e.g. peracetic acid can be supplied at 27 to sterilize the tank before it is filled. The tank is filled through the bottom opening 7 until the level reaches the bottom of the dome. The space within the dome is filled with nitrogen or other inert gas at superatmospheric pressure from a tank 31, Fig. 2, via a regulator 30, a pipe 32 and a filter unit 33 having an outlet 36 immediately opposite the nozzle 25. The gas passes to the outlet 36, Fig. 5, through a pair of biological filters 34 and a chamber 35. As the tank 2 is filled the sterile air in the tank and the gas escapes through the vent 28 which is subsequently closed. A pressure relief valve 29 is provided on the dome. The spray nozzles 25a and 25b are directed to opposite ends of the tank and the nozzle 25 is directed at the outlet 36 whereby the filters can be sterilized before the tank is to be filled.
Patent GB-568319-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B9/12
Filed: 1943-04-12
Abstract: 568,319. Lenses. TAYLOR, TAYLOR, & HOBSON, Ltd., and COX, A. April 12, 1943, No. 5868. [Class 97 (i)] In a lens having high corrections for comparatively small apertures and narrow semi-angular fields when made up in long focal lengths, and of the type comprising a simple divergent component between two convergent components each consisting of a bi-convex convergent element cemented to a divergent element of lower mean refractive index and AbbÚ V number, the contact surfaces being convex towards the middle component, the mean refractive indices of the two elements of the front convergent component differ from one another by not less than . 055, and the radius of curvature of the contact surface betweeen them lies between .25 and .40 times the focal length of the objective. Other numerical data relative to the desirable optical properties, radii of curvature, and separation of the components are set out, and tables of data for two examples are given.
Patent GB-1024997-A (GB)
Title: Improvements in or relating to toys
IPC: A63H33/00
Filed: 1964-02-12
Abstract: 1,024,997. Mechanical toys. M. J. GLASS [trading as MARVIN GLASS & ASSOCIATES]. Feb. 12, 1964 [Feb. 25, 1963], No. 5910/64. Heading A6S. An electrically propelled, remotely controlled toy has a head 110 (Fig. 1 not shown) rotatably mounted on a base from which head disc like objects are propelled. A pair of drive wheels 50 are driven by electric motors 56, 57 (Fig. 3 not shown) via gear trains. Upon reversing the current passing to either motor a shifting idler cog in the gear train is disengaged from the gear driving the appropriate wheel and engages a gear 74 (Fig. 7 not shown). When motor 56 (Fig. 3 not shown) is reversed a cog 136, engaging teeth 134 of rotatable cylinder 112 which tiltably carries the head or arms 122, is caused to be driven thus the head rotates. When the other motor is reversed a gear 150 is caused to rotate, via cable 145 and gear 146, and effects tensioning of a spring 154 by lugs 152 on the gear 150, which spring when released propels an object from the toy. A crawling action is simulated by two U shaped members 96 (Fig. 3 not shown) movable about their pivots 100 by eccentric gears 104 drivingly engaged with pinions 106 (Fig. 5 not shown) of the wheel shafts, which members engage the lower arcuate surfaces 92 of legs which are pivoted at 91. When the motor 56 (Fig. 3) is not reversed a cam causes a spring 178 to vibrate to drive air from chamber 172 into a whistle 170. An eye 162 (Fig. 1 not shown) having three vertically polarised sections, when viewed from different positions, has the appearance of a "flashing eye". The various operations of the toy are controlled by buttons on a panel 32 (Fig. 1 not shown).
Patent GB-1077450-A (GB)
Title: Improvements in and relating to the manufacture of microporous sheet plastic material
Inventor: HARBARD EDWARD HENRY
IPC: B29C67/20
Filed: 1965-02-11
Abstract: <PICT:1077450/C3/1> Microporous sheet plastic materials are produced by incorporating a soluble filler into the plastic mix for casting, extruding or otherwise forming into a sheet, and afterwards leaching out the filler, the leaching being effected by exposing one of the two surfaces of the sheet to sub-atmospheric pressures, whilst the other surface is kept at or near atmospheric pressure, whereby the leaching liquid is caused to pass through the sheet from one surface to the other to dissolve and carry away the soluble material from the sheet.  Preferably the sheet is stretched over the perforated surface of a hollow roller which is connected to a suction pump.  Fig. 1 shows a normal leaching tank, from which a sheet 11 passes to a tank containing such a roller 21 around which the sheet passes.  The inside of the roller is connected to an exhausting apparatus, which exerts suction through narrow channels 39 connected to grooves on the surface of the roller.  The specified plastic material is polyvinyl chloride, while the specified soluble filler is common salt, which may be leached out with water.  This leaching process may be used subsequent to leaching by normal methods and/or the leaching process using ultrasonic waves described in Specification 1,077,449.
Patent GB-385472-A (GB)
Title: Improvements in expansible bands for personal wear
IPC: A44C5/08
Filed: 1932-02-29
Abstract: 385,472. Bracelets &c. ALLDRIDGE, E. C. and ALLDRIDGE, W. E., 107, Spencer Street, Birmingham. Feb. 29, 1932, No. 5978. [Class 43.] Spring links for expanding bracelets or the like comprise an inner wire loop 1 slidable within an outer casing 2 made from a single folded metal blank. The free ends of the blank are interlocked together without the use of a separate connecting part by tongues 4, 5 at the ends, one tongue 4 being bent into hook shape and the other 5 being curled around it. The blank has a central portion of reduced width about which it is folded round the slidable loop of an adjacent.link. A spring 7 and the loop 1 are then inserted and the ends of the blank are interlocked. The edges of the blank are bent to form flanges 6 which serve to conceal the inner loop 1 and the spring 7 and leave space so that the sides of the loops 1 may slide between the flanges and the tongues 4, 5. The spring 7 is interposed between one end of the loop 1 and the tongue 4.
Patent GB-757205-A (GB)
Title: Improvements in or relating to measuring apparatus
IPC: G01F23/26
Filed: 1953-03-04
Abstract: 757,205. Electric tests. MINNEAPOLISHONEYWELL REGULATOR CO. March 4, 1953 [May 31, 1952], No. 6003/53. Drawings to Specification. Class 37. The depth of fluid in a container is measured in known fashion by means of two condensers, each comprising a plurality of parallel plates or concentric tubes; the first condenser extends throughout the height of the container so that its capacitance is affected by the depth and dielectric constant of the fluid, and the second (compensating) condenser is totally immersed in the fluid so that its capacitance is affected by only the dielectric constant of the fluid; according to the invention the second condenser is joined to the lower end of the first to form a single physical unit. In the embodiments described the two condensers comprise a plurality of concentric tubes, the second condenser being fitted over the lower end of the first. Specifications 757,295 and 757,296 are referred to.