baber/WOPTO huggingface dataset:
Patent GB-1519664-A (GB)
Title: Method of producing a high molecular weight polyester of low carboxyl end group concentration
IPC: C08G63/91
Filed: 1976-03-31
Abstract: 1519664 Reacting polyesters with carbonates GOODYEAR TIRE & RUBBER CO 31 March 1976 [2 May 1975] 12936/76 Heading C3R The carboxyl end group concentration of a polyester is reduced by reacting the polyester with a monomeric organic carbonate in the presence of, as catalyst, 0À0005 to 0À01% by weight, . based on the polyester, of an alkali metal alkoxide having 1 to 8 carbon atoms or an alkali metal salt of a monocarboxylic acid having 1 to 9 carbon atoms. The amount of carbonate is preferably from 0À05 to 1À0% by weight based on the polyester. The Examples describe reducing the carboxyl end group concentration of polyethylene terephthalate using diphenyl carbonate or bis-(p-chlorophenyl) carbonate and sodium acetate or caesium acetate.
Patent GB-121573-A (GB)
Title: Improvements relating to Boots, Shoes and the like.
Inventor: LOUD RICHARD
IPC: A43C1/00
Filed: 1918-08-09
Abstract: 121,573. Loud, R. Aug. 9, 1918 With attachments for special purposes.-To retain the tongue B of a boot in position it has secured to its upper end a small strap A, Fig. 1, which is threaded through eyelets C in the boot upper, and is then secured by a buckle. In a modified arrangement, Fig. 2, the ends of the strap are perforated and engaged by the boot lace.
Patent GB-528222-A (GB)
Title: Improvements in or connected with tracks for toy railways
IPC: A63H19/30
Filed: 1939-05-01
Abstract: 528,222. Toy railways. KAHN, S. May 1, 1939, No. 12977. [Class 132 (iii)] A section of track for toy or model railways is so constructed that it can be made adjustable in length with the rails correspondingly adjustable, in such manner that the continuity of the rails for running purposes is not affected. The section shown comprises two parts A, B each having a track member 1 of insulating material provided with three longitudinal ribs on which the rails 2, 3, 4 are secured by clamps 5 passing through slots in the track member 1. A slotted plate 6 is screwed to member B and slides into a recess 7 in member A being secured adjustably by screw 8 passing upwards through slot 6a into a threaded hole in member A.. Rails 2, 3, 4 project beyond the ends of members A and B having half of their thickness cut away, and the rails of member A are provided with pins or wires 9, 10, 11 which can penetrate into recesses in the rails of member B when the section is reduced in length. The section can be made in more than two parts, each adjustably connected together, and sections can be straight.or curved. Instead of a flat plate, a channel-shaped member with corresponding recess can be used. The rails on one part can be made to terminate at the end of the part, the other part carrying wires to engage in recesses in the rails. Additional means may be used to connect corresponding rails electrically.
Patent GB-611381-A (GB)
Title: Improvements in or relating to thermionic tubes
IPC: H01J7/44
Filed: 1946-04-30
Abstract: 611,381. Thermionic valves. PHILIPS LAMPS, Ltd. April 30, 1946, No. 12981. Convention date, May 1, 1945. [Class 39 (i)] In a thermionic valve provided with a screen, a trimmer condenser is located in the space bounded by the screen and the wall of the tube ; in this way the electrode capacities can be adjusted during manufacture to a preset value so that all valves are interchangeable. In the Figures, 1 is the wall of the tube, 4 the screen and 3 an electrode lead-in wire. In Fig. 1, the lead-in 3 has a rod 7 secured to it; this rod is surrounded by an insulating sleeve 9 and a movable metal sleeve 10 which is connected to the screen 4 at 11 by means of a flexible wire. In Fig. 3, a wire 15 is helically wound on the insulating sleeve 16 surrounding lead-in 3; the capacity is varied by pulling the wire so that it unwinds. In Fig. 8, the trimmer condenser plate 26 is threaded on to the lead-in 3. Figs. 9 and 10 show a form in which one plate of the trimmer condenser is a coating 30 on the wall of the tube around the lead-in 3 and in contact with it; the other electrode is the screen 4 and the capacity is varied by altering the position of an insulating plate 31. U.S.A. Specification 1,923,552 is referred to.
Patent GB-908552-A (GB)
Title: High-frequency coil and method of manufacturing same
Inventor: MARTIN ERNST
IPC: H01F17/00
Filed: 1961-04-12
Abstract: 908,552. Transformers and inductances. FERNSEHGERATEWERKE STASSFURT VEB. April 12, 1961, No. 13153/61. Class 38 (2). [Also in Group XXII] A high-frequency inductance coil comprises a sinuous conductor formed by cutting or stamping from a conductive metal strip or by depositing a conducting layer on to an insulating strip and then pressing alternate webs in opposite directions out of the plane of the strip to produce a self-supporting helical coil 1, 2 which is placed over a former 3 having a variable tuning core 4. In a modification, the sinuous form may be etched from a conductive layer or each side of an insulating strip 5, slit at 6 and opened out to form two coupled coils. In a further modification, two axially spaced coils having two strips on each surface may be produced on a common insulator and directly connected by coupler coils 8 or by means of a capacitor 9 or by a capacitor 11 between coil taps 10.
Patent GB-899488-A (GB)
Title: Slitting device
IPC: B26B27/00
Filed: 1961-04-12
Abstract: 899,488. Making slitting blades. TILLY, J. O. April 12, 1961 [April 15, 1960], No. 13194/61. Class 83 (2). [Also in Group VIII] Slitting blades 26 having a cutting edge 30 and a complementary rear edge 32 are stamped from a metal strip 28 without waste.
Patent GB-574860-A (GB)
Title: Improvements in and relating to aerodynamic controls for aircraft
IPC: B64C3/54
Filed: 1944-07-11
Abstract: 574,860. Controlling aircraft. BLACKBURN AIRCRAFT, Ltd., COLEMAN, W. S., LEAVY, L. E., and SAUNDERS, C. G. July 11, 19.44, No. 13227. [Class 4] Aircraft control means comprises an arcuate plug spoiler mounted for movement in an arcuate slot. adjacent to and in front of an intersurface slot and provided on its, upper edge with a hinged plate, the angle of which is varied during movement of the spoiler. The operation of lowering the flaps is simultaneously effective on the means operating the hinged plate to give a new angular relationship of the plate to the spoiler during movement of the latter with the flaps down. In the form shown in Fig. 1, the spoiler 1 moves in an arcuate slot 4 about a fixed axis 3, and the hinged plate 5 is actuated by a link 6 connected to a pivoted lever 7 at a point close to but eccentric of the pivot axis 3. The desired characteristic is imparted to the plate 5 by appropriate displacement of the point of connection of the members 6 and 7 from the axis 3 as the spoiler moves, this being effected by a cam 8 which engages the lower end of the rod 7 and is rotated by a toothed gear sector 9 and pinions 10, 11. When the flaps are lowered, a member 12 engages the rod 7 to move its lower end clear of the cam 8, and provide a fixed pivot point for the link 6 to impart a new characteristic to the plate 5 suitable for flap down conditions. According to the embodiment shown in Fig. 2, the plate 5 is operated by a three-armed lever 17 and link 16, one arm of the lever 17 carrying a roller 18 which moves over a fixed cam plate 19 as the spoiler is operated. A bell-crank lever 21 is connected to the lever 17 by a slotted link 20, the point of connection of the crank and link normally being coincident with the pivot axis 3 of the spoiler, but lowering of the flaps displaces the point of connection to an eccentric position and moves the roller 18 out of contact with the cam 19. A further form of the invention is shown in Fig. 3, in which movement is imparted to the plate 5 by a rod 27 through a bell-crank 30 and links 31, 32, the rod 27 being displaced by one or other of two sleeves 23, 24, engaging fixed cam slots 25, 26, respectively. Dowels 28, 29 engaging bellmouthed slots 33, 34 determine which of the two sleeves 23, 24 is effective to actuate the plate, one dowel engaging the narrow end of its associated slot and the other dowel the mouth of the second slot. The cam slot 26 and sleeve 24 are effective during normal flight, and the slot 25 and sleeve 23 when the flaps are lowered. The operating mechanism is preferably arranged to impart movement in opposite directions to the spoilers on opposite wings. The hinged plate may be flat or of aerofoil section, and may be spaced a small amount from the end of the spoiler to form a variable slot.
Patent GB-132939-A (GB)
IPC: B60K17/30
Abstract: 132,939. Beremand, P. G. Nov. 23, 1918. Swivelling wheel hubs; brakes, arrangement and disposition of.-A centrally pivoted driving steering - wheel is shown in two sections at right-angles in Figs. 1 and 3. The axle casing 15 has a cylindrical head 16 carrying bearings on which the non-rotatable casing 10 is pivotally mounted. The driving-axle has a helical spring 21 connecting it to a plate 22 bolted to the wheel hub 23 which is mounted on bearings 25 on the casing 10. The casing 10 has central dust-excluding flanges 12 fitting the head 16 and its inner end is fitted with a ring 29 carrying the steering yoke 30 and a pneumatic cylinder E, Fig. 6, containing a piston for operating the brake bands A, A' through linkage B.
Patent GB-133785-A (GB)
IPC: A24F5/06
Abstract: 133,785. Harper, E. E. Oct. 18, 1918. Tobacco pipes.--Plugs a for bowls are made of a mixture of asbestos fibre and Portland cement, and may be fitted with eyelets c to facilitate removal.
Patent GB-759904-A (GB)
Title: Improvements in and relating to devices for giving electrical impulses at predetermined intervals
Inventor: WOODCOCK EDWARD CECIL
IPC: H01H51/32
Filed: 1953-05-13
Abstract: 759,904. Make and break switches mechanical. WILLIAMSON MANUFACTURING CO., Ltd. May 11, 1954 [May 13, 1953], No. 13414/53. Class 38(5) A device for giving electrical impulses at adjustable time intervals and intended for use with an automatic aircraft-camera comprises an electric motor 15 which drives through worm gearing 16a, 16b and bevel gears 17, 18 shafts 19, 21 fixed respectively to the latter, whereby the shafts rotate in opposite directions,' the shaft 19 passing through the hollow interior of the shaft 21. The shafts 19, 21 respectively carry annular electromagnets 13, 14 energizable through slip rings 22, 23, a magnetic disc 12 being freely mounted between the magnets so that, depending on which magnet is energized, the disc is clutched to that magnet and rotated in one or the other direction. Cam surfaces 28 formed on opposite sides of an arm 11 of the disc 12, operated respectively, normally-open switches 24, 26. The magnets 13, 14 are supplied respectively, through contacts 38g, 38e of a relay 38 having a pair of windings 38a and 38b, winding 38a controlling contacts 38c, 38g, 38h, and winding 38b the contacts 38d, 38e, 38f. In operation, assuming the arm 11 is being rotated by the magnet 14 towards the switch 24, then the contacts 38c, 38d, 38e will be closed and the winding 38b energized. On closure of the switch 24 by the arm 11 an impulse is given to the winding 38a whereby the hold-on contact 38c for the winding 38b is opened so that the latter releases opening its own hold-on contact 38d and de-energizing the magnet 14 by opening contact 38e; also a hold-on contact 38f for the winding 38a is closed. At the same time winding 38a closes contact 38g to energize magnet 13 and closes its own hold-on contact 38h. Thus the arm 11 is rotated by the magnet 13 in the reverse direction and the switch 24 opens to terminate the impulse, a similar sequence of events taking place when the arm arrives at the switch 26, whereby the arm is again reversed and the cycle continues. The interval between the operation of the switches 25, 26 is adjustable by rotating, by means of a knob 31, a toothed wheel 27 on which the switch 26 is mounted, the circuit connections to the switch 26 being established through slip rings 34. The switching means providing the electrical impulses for the camera may be combined with the clutch-controlling switches 24, 26 or be separate therefrom and operated by the arm 11. In another contruction (Figs. 4-14, not shown), a single annular electromagnet is employed, the disc 12 being driven in the reverse direction by a friction plate against which the disc is urged by a spring when the magnet is de-energized.
Patent GB-134544-A (GB)
IPC: B60C7/12
Abstract: 134,544. Runyan, A. L. Oct. 7, 1916, [Convention date]. Spring wheels with continuous outer rigid ring and pneumatic rubberring and like cushions.- A tread 4 is carried on a rim 6 peripherally recessed as shown so that portions of the material may enter the recesses, and reinforced by a metal plate of which portions 11 are bent to form a series of annular cells of triangular cross-section, and the edges of which are bent to form flanges 10. The cushion comprises a ring 14 of rubber with a series of pyranadal airpockets 17, 18 in staggered relationship. Sheets 15, 16 of fabric &c. seal the pockets. Side rings 19 of resilient material, the edges of which are secured by flanges 10, and flanges 22, 23 respectively, protect the sides of the cushion.
Patent GB-134814-A (GB)
IPC: B62D55/02
Abstract: 134,814. Soc. Anon. des Etablissements Delaunay-Belleville. Oct. 30, 1918, [Convention date]. Void [Published under Sect. 91 of the Act], Endless-track vehicles are fitted with road wheels which can be depressed into ground engagement, and are carried on pivoted members. The rear road wheels are driven from the track-driving mechanism, and the front wheels may be fitted for steering. The rear wheels may be spring supported in their operative position. The wheels 1 are carried on arms 2 pivoted to the axles 3 of the track wheels 4, and are driven by chain or other gear 7. The wheels are held in their raised and lowered positions by stops, and in the case of vehicles in which the body is not resiliently mounted on the trucks, springs 11 may be provided. The springs may be arranged transversely, as shown, and be con. nected to the wheel axles by members 12, or they may be arranged longitudinally and be pivoted with the wheels and abut against adjustable stops on the body. The front steering wheels are similarly mounted on pivoted arms.
Patent GB-135028-A (GB)
IPC: B23B27/16
Abstract: 135,028. Olsen, C. E., and Meddings, W. J. Jan. 6, 1919. Tools; tool-holders.-The high-speed-steel or equivalent removable cutter C of a metal-cutting tool is formed as a portion of a helix. The cutter is secured by a screw clamp D, E. Reference has been directed by the Comptroller to Specification 23293/00.
Patent GB-135101-A (GB)
IPC: B26B19/32
Abstract: 135,101. Collins, C. B. March 20, 1919. Razors, safety. A rotary safety razor is actuated by a spring motor through a rotating shaft 21, Fig. 3, which carries a disk blade 28, Figs. 1 and 3, clamped between members 27, 29. A shield 33 is fixed to a stationary centre post 31 and a guard 19 to a fixed support 17, the guard being clamped at any desired distance from the blade by a lock-nut 20. The rotating shaft 21, which can be removed when the shield 33 is unscrewed, is actuated through teeth 22 on its lower end meshing with a gear 16, Figs. 1, 2, and 3, on a shaft 14 rotated through a gear .13 by the rotation of the spring housing 1. The motor is housed in a casing comprising two rotatable parts 2, 3, the spring being wound up by rotating the part 3, to which the winding-stem 4, 5 is connected by the screw joint 9, 10. The unwinding of the spring is prevented by a ratchet and pawl 8, 11, Fig. 4. The speed is regulated by a centrifugal governor 35, embodying a shaft 36 and slidable brake disk 37, acted on by friction shoes 41, 42. The shoe 41 is on a sliding member 43 and serves fdr stopping and starting the mechanism. The speed is regulated by a pivoted lever 44 engaging the member 43, and also a sliding member 45 in the casing. The governor is driven from the gear 16 through a worm gear 39 and a train of speed gears 40.
Patent GB-135124-A (GB)
IPC: B26D3/18
Abstract: 135,124. Kennedy, J. E. Nov. 29, 1918, [Convention date]. Cutting and slicing vegetables &c.-An apparatus for cutting fruit, vegetables, &c. into slices, strips, or cubes comprises a holder 53 for the vegetable &c., a disk 54 on which it rests, a slieing knife on a rotating shaft 32, and two sets of parallel knives 15, 16, Fig. 2, which cut the slice into strips and cubes respectively. One or both sets of knives 15, 16 may be readily removed when it is desired to produce strips or slices only. The driving-shaft 32 also drives a gear-wheel 41 having two opposite rollers 45 engaging slots 46, Fig. 2, in the boss of a disk 31 having four equidistant openings 38 larger than the holder 53. The knives 15, 16 are carried by a cage 12 reciprocated by cams 27 on the power shaft 25, the arrangement being such that a slice cut by the knife 60 is directed by a bulbous portion 65 of the knife through holes in the disks 54, 31 and rests on the knives 16. The disk 31 then moves one-eighth of a revolution, bringing a solid part of the disk above the knives 15, 16 to act as an abutment for the slice when the knives ascend. An adjustable brake 48 holds the disk 31 against movement except by the rollers 45. The knife 60 is adjustable vertically so that it may always move close to the lower end of the holder 53. The disk 54 is vertically adjustable to vary the thickness of the slice, and a removable spacing block 67 of the required thickness or built up of shims is placed between the disks 54, 31.
Patent GB-165627-A (GB)
Title: Improvements in and relating to protective fuses for electric circuits
IPC: H01H85/045
Filed: 1920-05-17
Abstract: 165,627. Uren, F. W. May 17, 1920. Fusible cut-outs; plug couplings.-A fusecarrier 10 has terminal recesses 13 on its inner side containing plug contacts 21, angular wire channels 25 and a central transverse channel 26 communicating between them, and air vents 28 from the terminal recesses. The transverse channel 26 contains a damper 27 of asbestos tubing. The base member 11 is secured in position by nuts 35 upon hollow contact sockets 33 and annular walls 31 surround the contact sockets and co-operate with the terminal recesses 13 in the carrier to form an annular air path around the terminals. Holes 37 in the base communicate with transverse passages under the same to form flame outlets. Projections 29 on the base engage mating recesses 30 in the carrier. The plug contacts 21 are screwed upon terminals 16 fixed by polygonal heads 17 engaging polygonal recesses in the carrier and serve to damp the fuse wire.
Patent GB-135165-A (GB)
IPC: G03D13/04
Abstract: 135,165. Gorsky, S. de Procoudine-. Nov. 9,1918, [Convention date]. Plates, washing.-Apparatus for washing or treating plates comprises a tank A with inlet and outlet pipes 1, 2, and a hinged lid 3 having an horizontal shaft and coupling gear to rotate a vertical shaft 7. This shaft has a cross-head 9 with a pin 10 which rotates an inner frame 24 holding the plates. The wheel 14 is coupled with a driving-wheel 15 and pulley 16 when the lid is closed and fastened by the spring bolt 5. The rotating holder comprises four notched uprights 24 mounted to rotate in a frame 19 and having a slotted head 25 in which the pin 10 engages. Three of the uprights 24 are bolted to star frames 23, the fourth upright being attached at the bottom by a spring bolt and at the top by a coupling-joint 27.
Patent GB-639309-A (GB)
Title: Electric current regulator
IPC: H01H3/00
Filed: 1948-05-19
Abstract: 639,309. Control systems for consumption apparatus. CLEMENTSON, S. P. May 19, 1948, No. 13559. [Class 38 (iv)] In a regulating system for an alternating current circuit of the kind in which the circuit is periodically interrupted for an adjustable interval, the switch for interrupting the circuit is a rotary one, driven by a synchronous motor and is arranged to " make " and " break " whilst the current wave is passing through zero. A further switch allows selection of the ratio of the number of half-cycles during which the circuit is energized to the number of half-cycles that it is un-energized. In the arrangement shown a load L is supplied from an A.C. source X, Y through a rotary distributer switch c, d in series with a selector switch g, the wiper c of the former being driven by a four-pole synchronous motor band the fixed contacts d, each of which corresponds to a half-cycle of the supply, being connected in any desired number in the load circuit by the contact f of the selector switch. In a modified arrangement the rotary switch comprises segments mounted on a synchronously-driven shaft making contact with a stationary or adjustable brush or brushes, different segments or numbers'thereof occurring in different positions along the shaft. The selector switch determines the number or size of the segments brought into circuit. Radio interference suppressors may be connected across the rotary switch, the mains, or both. The selector switch may be actuated manually, or automatically, say, by a thermostat.
Patent GB-716250-A (GB)
Title: Improvements in or relating to electric semi-conducting devices
Inventor: WOLFSON HENRY
IPC: H01L23/488
Filed: 1951-06-08
Abstract: 716,250. Crystal rectifiers. STANDARD TELEPHONES' & CABLES, Ltd. June 8, 1951, No. 13657/51. Class 37. A rectifier comprises a semiconductor body and an electrode, each of which is secured to a metal plug Which is a force fit in the ends of a tube of insulating material. Fig. shows rectifier comprising a whisker electrode 3 welded to a metal cup 5 and engaging the surface of a crystal 2 which is conductively fixed to a metal cup 4. The metal cups and 5 are formed from flat discs of metal which are forced into the ends of a tube i of insulating material by means of a ram. A projection on each disc is used for connecting the cups to terminal wires 6 and 7 of copper, nickel or copper-clad steel. The ends are sealed with a thermosetting or thermoplastic material 9 such as a lithageglycerine cement or "Araldite" (Registered Trade Mark), the material filling the plugs 4 and 5. The material may be applied as a powder, or in the form of a disc, and alumina may be added together witha pigment to provide colour identification for the ends. The crystal 2 is attached to cup 4 by soldering or by means of a conducting cement such as that described in Specification 716,243, [Group V]. An alternative assembly (Fig. 12) is described in which the whisker 3 is welded to the terminal wire 7 and to a springy wire 15, so that the whisker is held centrally in the tube when the wire 7 is pulled through a central hole in the disc or plug 5. In this case no welding or soldering to plug 5 is necessary. Further modifications provide for the plugs 4 and 5 to be formed solid from a soft metal such as lead, the plug being slightly tapered and then forced into the tube with a ram. Alternatively, two rams might be used to provide a plug shaped as shown in Fig. 17, or the inside ends of the tube i may be slightly enlarged providing a plug formation as shown in Fig. 22. The invention has the advantage that no screws or solder are used in the final assembly, and the units can be soldered into circuit without special precautions for cooling.