baber/WOPTO huggingface dataset:
Patent GB-714643-A (GB)
Title: A method of joining layers of fusible plastic material along an edge and an apparatus for applying said method
IPC: B29C65/02
Filed: 1952-05-08
Abstract: 714,643. Seaming non-metallic sheet material. HORSTINK, J. May 8, 1952 [May 12, 1951], No. 11622/52. Class 42 (1) Superposed layers of fusible plastic material such as polyethylene, initially connected together along at least one side edge, are joined along another edge by fusing the layers together by radiant heat at the edges to be joinea projecting slightly from a clamping device, the former weld whilst still soft, being compressed by two pressing members in the same direction as that in which the layers are clamped so as to prevent trapping of air bubbles at the ends of the weld As shown a flattened sleeve of plastic is inserted from the left between spring pressed jaws 2 opened for the purpose by a handle 3, so that the. end of the sleeve projects slightly beyond the jaws. A knife 11, pivoted at 9, is moved by a knob 10 across the face of the jaws to sever the projecting material. A handle 15 is then moved to the left to bring a strip 16 carrying a heat-radiating element 18 towards the jaws 2. Projections 20 on strip 16 engage studs 7 and move them apart to separate two thin plates 5, the edges of which were flush with the mating edges of the jaws, and bare a narrow edge of the plastic sleeve; element 18 is now close to the bared edge, and causes the two layers of material to fuse together. When. element 18 is again moved away from jaws 2, plates 5 move together again to compress the weld while still soft thus excluding air bubbles from the ends of the seam. Jaws 2 can now be opened, the sleeve pushed through the device for a desired distance, and knife 11 operated to sever a length of sleeve in the form of a bag and prepare the sleeve for the next welding operation. Means may be provided for effecting the various movements of the apparatus automatically instead of manually.
Patent GB-753475-A (GB)
Title: Purification of phenol by distillation
IPC: C07C39/04
Filed: 1953-04-27
Abstract: Phenol which has been prepared from cumene and which contains hydrocarbons boiling from 170 DEG  to 210 DEG C. under normal pressure is purified by introducing the phenol-mixture into an intermediate stage of a rectification zone, introducing water (preferably in the form of steam) into the zone at a level below the inlet of the phenol-mixture, withdrawing vapours containing the hydrocarbons and water from the upper section of the zone, and withdrawing phenol substantially free from the hydrocarbons from the bottom of the zone.  The rectification may be conducted at normal, reduced, or superatmospheric <PICT:0753475/III/1> pressure.  A mixture containing phenol (38 per cent), hydrocarbons boiling from 170 DEG  to 210 DEG C. (0.2 to 0.5 per cent), acetone (43 per cent), cumene (1 per cent), a -methyl styrene (4.6 per cent), acetophenone (2.6 per cent), heavy hydrocarbons and phenols (3.7 per cent) and water (6.3 per cent) is heated to about its bubble-point and fed through line 3 into column 2 which contains about 60 bubble-cap trays, the feed entering at about the 30th tray from the base of the column.  Steam is introduced through line 4 at about the 10th tray from the base of the column, the weight of steam being about equal to the weight of phenol in the feed.  The temperature at the base of the column is maintained at a temperature a little above the boiling-point of phenol by circulating the liquid which collects at the base of the column through reboiler 6.  The temperature at the top is maintained at about the boiling-point of water.  Vapours containing the 170 DEG -210 DEG C. hydrocarbons, acetone, cumene, methyl styrene, water and a small proportion (about 1 per cent) of phenol leave the head of the column, and are passed through line 15 to condenser 16. The condensate is collected in drum 17, which is maintained at about 50 DEG -100 DEG C.  About half the condensate is returned via line 14 to the column as reflux; and the other half is withdrawn through line 18, and may be worked up for acetone.  Dry phenol containing acetophenone, methylstyrene-polymers, cumyl phenol and other high-boiling impurities is withdrawn from the base of the column through 13, and is purified by fractional distillation. Specification 626,095 [Group IV(b)] is referred to.
Patent GB-795451-A (GB)
Title: Improvements relating to ceramic dielectric materials
Inventor: PLESSNER KARL WOLFGANG
IPC: C04B35/468
Filed: 1956-04-17
Abstract: A ceramic material contains barium titanate, a minor proportion of one or more zirconates and/or stannates of an alkaline earth metal or metals, and one or more of the oxides of iron, nickel, cobalt and manganese in the molecular equivalent of up to 1 per cent magnesia relative to the other ingredients.  Oxides or precursors therefor in the required proportions are fired, the product ground, shaped (possibly with temporary binders) and refired.  Specification 795,450 is referred to.
Patent GB-466952-A (GB)
Title: Improvements in or relating to electric distant control systems
IPC: B23K11/00
Filed: 1935-10-05
Abstract: 466,952. Electric control systems. JAPOLSKY, N. Oct. 5, 1935, No. 11731/37. Divided out of 466,881. [Class 40 (i)] A transmitter normally controls its receiver "poly-periodically," i.e. in accordance with one of the known systems in which the receiver, e.g. a synchronous motor, has several possible stable positions relatively to the transmitter and thus continues to follow the movements of the transmitter after it has fallen out of step but does not tend to go back to the correct phase relationship, but when the receiver has fallen out of step, poly-periodic control is replaced by " mono-periodic " control, i.e. control in which there is only one stable relative position between the transmitter and receiver. When the latter is in step again, " poly - periodic " working is automatically resumed. As shown, the transmitter 36 which comprises brushes 37 fed with current proportional to the speed of the motion to be reproduced as well as brushes 38 fed with constant current, to compensate for lag between the transmitter and receiver as described in Specification 449,901, supplies 3-phase current to the exciter winding 48 of a generator 49 which supplies 3-phase current to the receiver 54 which acts as a synchronous motor. If the receiver falls out of step, current flows in the circuit of the coil 61 via the potential dividers 60, 62 and the coil either directly or through a relay arrangement alters the connections of the machines 49 and 54 so that instead of acting merely as a power amplifier as hitherto, in the manner described in Specification 221,041, [Class 40 (i)], the machine 49 becomes a D.C. generator and machine 54 acts as a D.C. motor. When the transmitter and receiver are in step again the coil 61 lets go. The invention is further described with reference to systems identical with some of those shown in Specification 466,881.
Patent GB-910392-A (GB)
Title: Coating method and product
IPC: B05D1/24
Filed: 1960-04-04
Abstract: 910,392. Coating articles with beads. POLYMER CORPORATION. April 4, 1960 [April 13, 1959], No. 11797/60. Class 93. An article has a non-reflective mat surface containing a tightly-packed single layer of glass beads embedded at least part in and carried by a. matrix on the surface, the average diameter of the beads ranging up to 125 microns, the diameter of the beads being selected in accordance with the light-reflectivity of the matrix, being higher for a low-reflectivity matrix and lower for a high-reflectivity matrix. The beads may be applied to the tacky surface of the article by immersion in a fluidized bed of the beads. The article may be resinous throughout, or may have a surface coating of a synthetic resin. The beads may be first coated with a primer, e.g. a chrome or silane primer. The beads may be preheated to a temperature between 150‹ and 1000‹ F. The surface may be rendered tacky prior to immersion in the fluidized bed either by heating or the application of a solvent. Where the plastic surface is of a thermosetting resin, curing may be completed after withdrawal from the fluidized bed by further heating. The plastic surface may have been applied to the article in another fluidized bed. The resin may be a thermoplastic or thermosetting resin or a mixture thereof, and may be a cellulose ester, polystyrene, an epoxy resin, polyethylene, a polyvinyl resin, a polyamide, or a polycarbonate. In Example 1, a steel shaft heated to 625‹ F. is dipped in a fluidized bed of powdered plasticized cellulose acetate butyrate resin for 6 seconds, removed from the bed, dipped in a fluidized bed of spherical glass beads of diameter 20-50 microns, and further heated for a short time at 625‹ F. Example 2 is similar, using a whitecoloured resin, Examples 3 and 4 are similar, using steel panels. In Example 5, glass beads are dipped into a priming solution of epoxy resin, epoxy curing agents consisting of methylene-dianiline, other aromatic amines, and mphenylenediamine, methyl ethyl ketone, and toluene, drained, and tumbled while being air dried. An aluminium medallion is heated to 250‹ F., dipped into a fluidized bed of epoxy resin powder for 15 seconds, and while still tacky is dipped into a fluidized bed of the primed glass beads at ambient temperature. The medallion is withdrawn and heated to 350‹ F. for 30 minutes. In Example 6, a glass panel at 600‹ F. is dipped into a fluidized bed of plasticized cellulose acetate butyrate for 5 seconds, heated for 30 seconds, dipped into a fluidized bed of glass beads, excess beads being then shaken or blown off, and is heated at 500‹ F.. for 45 to 60 seconds. In Example 7, a polyvinyl chloride rod is immersed in cyolohexanone for 10 seconds and then dipped in a fluidized bed of glass beads. In Example 8, a metal dish rack is dipped in a vinyl plastisol, allowed to drain, heated at 325-350‹ F. for 2 to 5 minutes, dipped in a fluidized bed of glass beads, and then heated to 325-350‹ F. Specification 759,214 is referred to.
Patent GB-216508-A (GB)
Title: Transformer for mercury vapour lamps
IPC: H01F38/10
Filed: 1924-05-13
Abstract: 216,508. Busse, H. May 24, 1923, [Convention date]. Transformers; vapour apparatus, arrangements of. -A transformer for feeding a mercury-vapour rectifier is provided with an auxiliary secondary winding 11 connected in the lead to the cathode, this winding, which acts as a choking- coil, being mounted on a supplementary core magnetized by continuous current from the anode coils 6. In one arrangement for single-phase currents, Fig. 1, the supplementary core has three legs, the central leg 9, carrying the winding 11, being connected to the main core, while the outer legs 8, 10 are separated from the main core by air gaps. Auto-transformer connections are provided between the primary winding 5 and the secondary windings 6 connected to the anodes. For polyphase currents, the supplementary core is starshaped in plan, and comprises a central leg connected to the main core and carrying the auxiliary winding, and free legs equal in number to the number of phases, arranged around the central leg. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also a modified arrangement for single-phase currents, Fig. 1. (Cancelled) in which independent primary and secondary windings 5, 6 are employed instead of using auto-transformer connections. In another modification, Fig. 3 (Cancelled), all three legs of the susplementary core are connected to the main core, air gaps being provided between the central leg 9 and the outer legs 8, 10. This subject-matter does not appear in the Specification as accepted.
Patent GB-1173499-A (GB)
Title: A Heating Device for Moving Synthetic Filaments.
IPC: D02J13/00
Filed: 1967-03-14
Abstract: 1,173,499. Electric heating elements. BABMAG BARMER MASCHINENFABRIK A.G. 14 March, 1967 [14 March, 1966], No. 11896/67. Heading ASH. [Also in Division D1] In a heating device for travelling synthetic filaments the filament 2 is passed over the surface of a resistance heating element 1 whose cross-sectional area is varied in the direction of travel to ensure that the temperature distribution is substantially constant along its length. As shown, the width of the element varies, but in Fig. 5 (not shown), holes are provided along the length of the element. The element may be in the form of a split tube. The heating element may comprise a thin steel strip of variable width mounted on an anodized aluminium support. In Fig. 6 (not shown), the thickness of the heating element varies along its length. Fig. 9 shows a twin plate heating system in which both heating plates 11, 12 are carried by a pivoted support 13. In the event of lap formation of the rollers 15, 16, support 13 is displaced against the action of spring 17 to actuate a microswitch 19 controlling the drive. Current may be induced in the heating element or supplied from terminals as shown.
Patent GB-111453-A (GB)
Title: Improvements in Hair-cutting Devices.
Inventor: ELLIS FREDERICK ARTHUR
IPC: B26B21/12
Filed: 1917-08-20
Abstract: 111,453. Ellis, F. A. Aug. 20, 1917. Hair-cutting appliances of safety-razor type.- A hair-cutting device comprises a comb provided with integral or attached studs b upon which haircutting blades c are threaded. Leaf or helical springs n are interposed between the upper parts of the blades and the sides of the comb and over the blades fits a yielding extension g of a pivoted plate f, said extension being of inverted-U section.
Patent GB-1291570-A (GB)
Title: Non-woven fabric
Inventor: BAHIA HARDEV SINGH
IPC: D04H3/005
Filed: 1969-03-07
Abstract: 1291570 Non-woven fabric COURTAULDS Ltd 6 March 1970 [7 March 1969] 12119/69 Heading D1R A non-woven fabric comprises a plurality of plies of substantially parallel lengths of bundles of crimped continuous filaments, the bundles are twistless or have up to 1 turn per inch of twist. The bundles of one ply are cross laid on the bundles of an adjacent ply with the filaments of crossed lengths being entangled. One fabric can be formed by winding one or more filament bundles onto a rotor under tension so as to temporarily reduce the crimp, the winding being conducted to produce crossing helices, relaxing the tension in the wound bundles (e.g. by collapsing the rotor) so that the filaments resume their crimp and crossing bundles entangle. The fabric can also be made by over-end winding with the collection twist neutralising twist in the filament bundle to produce twistless bundles in the plies. The fabric can also be made by the looping device disclosed in Specification 1,042,134. The formed fabric can be left in its tubular shape or can be slit to form a flat fabric. The filament bundles can be spaced to form a net like fabric or can be closed to entangle along their lengths and produce a batt-like fabric. The filaments can be made of polyethylene terephthalate, poly (ethylene terephthalate/isophthalate), polyhexamethylene adipamide, polycaproamide, cellulose diacetate, cellulose triacetate, polyethylene, polypropylene, polyacrylonitrile or acrylonitrile copolymers. The fabric can be bonded with a solution or emulsion of acrylate or methacrylate ester polymer or copolymer, polyvinyl acetate, polyvinyl chloride. The adhesive can be applied by printing.
Patent GB-437037-A (GB)
Title: Method of and apparatus for steering motor vehicles
IPC: B62D1/26
Filed: 1934-04-23
Abstract: 437,037. Steering motor vehicles. JACOBSOHN, W., 12, Ahrweilerstrasse, Wilmersdorf, Berlin. April 23, 1934, No. 12238. [Class 79 (v)] Trackless motor vehicles are steered automatically by means of a rail or guide, the manual steering gear being put out of action and steering being effected by a servo-motor controlled by the distance of the vehicle from the guide. In the construction shown in Figs. 4 and 5, the conductor wire 17 of a trolley vehicle is used as the guide and the vehicle is steered by a servo-motor 22 energized in accordance with (1) the angle alpha which the trolley arm 18 makes with the longitudinal axis of the vehicle, (2) the angle # which the collector shoe 19 makes with the trolley arm, or (3) the effect produced by both angles. The angular movement of the shoe or the trolley arm may operate a rheostat in the servo-motor control circuit, and this circuit may be supplied from the conductor 17 so that the servo-motor is put out of action when the trolley shoe leaves the conductor. The servo-motor controls the steering wheels through steering-gear 23, the steering hand wheel being put out of action. In the construction shown in Fig. 3, a conductor 12 is embedded in the road and electric highfrequency devices 10, 11 are employed to control the steering servo-motor 13, the effect of the devices 10, 11 being dependent on their distance from the conductor 12. The vehicle may run normally on flat rails 14, 15 and one or both of these may be used as conductors, the separate conductor 12 being dispensed with. In Fig. 1 (not shown) the servo-motor is controlled mechanically by an arm carried by the vehicle and bearing against a guide rail.
Patent GB-775104-A (GB)
Title: Respirator for use by swimmers
IPC: B63C11/16
Filed: 1955-07-25
Abstract: 775,104. Respiratory appliances. BARTLETT, W. July 25, 1955 [April 28, 1954], No. 12266/54. Class 81(2) A breathing tube assembly, for use by swimmers, is so constructed as to prevent the surface of the water from reaching the valve seating, so as to avoid the possibility. of oil interfering with the correct functioning of the valve. The open end of the breathing pipe 11 is directed vertically downwards and provides a seating 20 for a valve plug 18 on a slidable stem 15, which also carries a float 19 to cause the valve to close when it is submerged. The valve is enclosed in a body made from a cup-shaped member 12 and an open cage 13 so that air is trapped in the upper part of the cup 12, when the device is submerged, and water cannot reach the plug 18 and seating 20. The float shown may be replaced by a ball against which the rod 15 bears.
Patent GB-240757-A (GB)
Title: Improvements in reinforced concrete railway sleepers and the like
IPC: E01B3/36
Filed: 1925-05-11
Abstract: 240,757. Jones, C. May 11, 1925. Steepsrs, composite; tie-bars. - Reinforcedconcrete sleeper-blocks are connected by adjustable tie-bars consisting of links attached to projections of the reinforcement and provided with means to set themselves parallel or otherwise. The links 9, Fig. 1, are spaced by a screw 10 and connected to the ends 7b of a bar 7 reinforcing each block. The bar 7 is wound with wire 8a which is tensioned before moulding by a bolt 8 spreading the arms of the bar. At the outer end of each block, the bar 7 may extend as a handle 7<a> or to form a coupling with another block, the intervening space being filled with concrete. In Fig. 6, the blocks A, B, C are provided with filling D, E to receive branch rails, the location of which is settled before the filling is completed. The links may be pivoted to the blocks about bolts 9<a>, Fig. 6, or may be rigidly secured thereto by bolts 9<a>, 9<b>, Fig. 1.
Patent GB-959984-A (GB)
Title: Method and apparatus for forming a tobacco rod
IPC: A24C5/18
Filed: 1961-04-06
Abstract: 959,984. Cigarette-making machines. K. KÍRBER. April 6, 1961 [April 6, 1960], No. 12349/61. Heading A2C. A machine for forming a tobacco filler for cigarettes, cigars and smoking tobacco packs includes a testing device which automatically operates a fine (filler-trimming) control, and outside predetermined limits, a coarse (filler-feed) control. In a cigarette making machine, Fig. 1, tobacco is showered on to a belt 2 and delivered to a suction groove 7 of a feed wheel 6. The tobacco stream is trimmed by a trimming device 10 and the excess tobacco delivered to a spiked groove 9 from which it is later picked off by a beater wheel 46 and returned at point 45 to the belt 2. The trimmed tobacco stream is withdrawn from the suction groove 7 by a scraper 11 and delivered, aided by a steel belt 16, to cigarette paper 13 and fed into a rod forming mechanism. The amount of tobacco in the formed rod is tested by a radiation measuring testing device 19 upstream of the machine cut-off 18. The result shown by the testing device 19, is converted by a control unit 20 into a control signal which is transmitted along a line 21 to an actuator motor 23. A driving shaft 24 (Fig. 3) from the actuator motor 23 drives through a slipping clutch 25 a member 26 carrying a regulator shaft 27 which shaft is rotatable in fixed bearings 28 and 29. The driven member 26 embodies a pin 35 (Fig. 2) which co-operates with a stop 36. A rod 42 which is operated against spring pressure by the cam 30 through a roller 41, controls through an adjustable spindle 43 the trimming device 10. When the rotation of the shaft 27 exceeds a predetermined value due to an excess feed of for example 10%, a press switch 33 is operated by a cam disc 31 and through a control line 37 operates a regulator appliance 39, which appliance varies a continuously variable drive 40 of the distributor such that the tobacco feed is reduced by 10%. Should the feed be too small; a press switch 34, operated by a cam disc 32, operates the regulator appliance 39 through a control line 38 in the opposite sense. The stop 36 may be replaced by machine cut-outs (Fig. 4 not shown). In an alternative embodiment the testing device 19 is placed at 44.,
Patent GB-539219-A (GB)
Title: Improvements relating to bedstead back rests
IPC: A47C20/04
Filed: 1940-08-01
Abstract: 539,219. Bed-rests. HOSKINS & SEWELL, Ltd., and HOSKINS, H. R. Aug. 1, 1940, Nos. 12458/40 and 5300/41. [Class 52 (ii)] A bedstead is provided with a back-rest a, a cross bar d capable both of rotation and axial movement by means of a knob i, an arm or arms e secured to the cross bar d and pivotally connected to cross pieces f on the rest frame, and means for locking the cross bar d in any of a number of predetermined angular positions according to the required inclination of the backrest. When out of use, the back-rest assumes the vertical position shown by full lines, the lower end being retained by hooks t on the uprights b of the bedstead. To bring the rest into use, a pivoted abutment u is swung aside to permit the cross bar d to be moved axially to the left as viewed in Fig. 1. This movement releases an apertured collar o carried by the cross bar from engagement with a pin on the supporting bracket. The cross bar together with the arms e may now be rotated to the desired extent and locked in the adjusted position by re-engagement of the pin with one of the apertures in the collar o, the lower end of the back rest a having been swung forward as indicated by broken lines. To remove the back rest from the bedstead, the knob i is detached and the right-hand end of the cross bar is removed laterally through a slot in its supporting bracket after first displacing a retaining sleeve k. The other end of the cross bar is then disengaged by an axial movement to the right, Fig. 1. In a modification, the upper portion of the back-rest is provided with a telescopic extension.