baber/WOPTO huggingface dataset:
Patent GB-1002199-A (GB)
Title: Improvements in telerecording systems
Inventor: ADORIAN PAUL
IPC: H04N5/84
Filed: 1963-04-18
Abstract: 1,002,199. Television. REDIFFUSION TELEVISION Ltd. April 20, 1964 [April 18, 1963], No. 15371/63. Heading H4F. In an arrangement for recording television images, in particular interlaced television images, on intermittently moving film, successive frame signals of the television images are displayed in cyclic sequence each on a different one of a number of picture display areas on a single cathode ray tube or each on a different one of a number of cathode ray tubes, camera and shutter means being arranged to expose a film within the camera to the displayed images in the same sequence for the final portion only of each frame scan period e.g. the second field scan period. As shown, Fig. 1, the successive frames of the television signal are fed alternately to the tubes 2 and 3, both of which have a long afterglow, and rotating shutters 6 and 8 allow the light from tubes 2 and 3, only during the alternate frames in which they receive the television signals, to pass via semi-silvered mirror 5 to the film in camera 1. An additional shutter in the camera prevents light from reaching the film in the first field of each frame, i.e. when the film is moved. Thus in the second field of the first, third and fifth frames &c. the film is exposed to the first tube and in the second field of the second, fourth and sixth frames &c. the film is exposed to the second tube thus allowing three intervening fields for each tube between each recording of a field which provides time for the afterglow of the preceding frame to die away, the picture being recorded in each case being the first field by afterglow and the second directly. The first field is arranged to be brighter than the second to equalize the effect of the two consecutive fields on the film during the second field period in which the film is exposed. The camera shutter may be omitted and each rotating shutter is then arranged to permit the passage of light only during the second field of alternate frames. Alternatively either a single rotating shutter may be used operating in the plane of the semi-silvered mirror S and having sectors in the sequence: transparent, opaque, fully reflecting, opaque, &c., or an oscillating mirror or prism may be used. In an alternative arrangement, Figs. 3a and 3b, not shown, a single tube having two display areas is used, the beam being deflected from one display area to the other after each complete television frame. This arrangement has the advantage that the brightness and contrast of the images on the tube are the same for both positions whereas for the arrangement as shown a " staircase ". waveform has to be applied to both tubes to check for correct brightness match.
Patent GB-679297-A (GB)
Title: Improvements in or relating to barriers and like guards
IPC: E01F13/02
Filed: 1950-06-20
Abstract: 679,297. Fencing; gates. TUBULAR CONSTRUCTION SYSTEMS, Ltd., APPLEBY, W. E., and HARRY, T. June 1, 1951 [June 20, 1950], No. 150406/50. Class 45 A portable barrier unit 10 comprises a substantially vertical portion 12 forming a guard and a horizontal or foot portion 11 extending therefrom at least on one side and in which the foot portion 11 on said one side is arranged so that a pressure applied to the guard portion 12 from the other side will tend to lift one end of the unit The guard portion 12 which has an outwardly bent top rail and a wire mesh 19 which is welded to a tubular surrounding frame is welded to the base portion 11 which is of substantially triangular shape and formed from a single tube. The foot portion is so connected to the guard portion that the greater portion. of it is located to one side, i.e., the outside of the guard, one side 21 being arranged at an angle of approximately 30 degrees to the plane of the guard and another side 22 at approximately 60 degrees so that the apex 23 of the base is closer to one end than the other, hence when a pressure is applied to the side of the guard opposite the apex 23, the barrier tends to tilt about the side 21. The remaining side 20 of the base is arranged parallel to the guard portion and on the other side of the guard portion than the apex 23 . Because of the bending of the top rail people leaning on the guard tend to stand on the side 20 and help to hold the barrier in place. The underside of the base portion 11 may be provided with earth engaging spikes 24 to prevent lateral movement of the barrier. The units are connected together by hook and eye connections 25, 26, the eye being on the end of the unit which is closer to the apex 23 so that when the end of the unit tends to lift owing to pressure on the barrier, the weight of the adjacent unit transmitted through the hook tends to hold it down. A gate may be provided in an assembly of units; this consists of a sole plate 36, Fig. 6, having two sockets 35 into which posts 31, 32 fit. These posts have eyes 33, those on one post engaging the hooks of a unit 10 and those of the other being connected to the eyes of another unit 10 by nuts and bolts 34. The gate, which is hinged to the post 32, is of tubular construction. The unit 10 may be modified so that the base unit and the outside frame of the guard unit are made from a single length of tube. The wire mesh panel may be attached by clips instead of by welding.
Patent GB-1028635-A (GB)
Title: Improvements in or relating to a sewing machine
Inventor: RICH MARION CRAMER
IPC: D05B47/00
Filed: 1963-04-18
Abstract: 1, 028, 635. Sewing machines. REECE CORPORATION. April 18, 1963, No. 15420/63. Heading D1G. A cyclically operated sewing-machine having a work clamp movable between a first and a second position has a needle bar mounted in its head for reciprocatory movement during a portion of the clamp movement and has means for releasing thread tensioning means after cessation of needle bar movement and for re-applying the thread tension at the end of the first stroke of the needle bar on resumption of its movement. The work clamp, not shown, is carried on a bracket 14 and moves from right to left during sewing, and moves further left after the needle bar stops, the bracket 42 then rocking levers 36 and 34, the upper end of the latter engaging the loose plate 24 of a tension device to move it against a spring 28 and relieve thread passing thereunder from tension. The clamp is moved back to the right after the work has been removed and new work is inserted, the lever 34 being retained in its tension releasing position by friction at its pivot 32 until a projection 44 on the needle bar the the end of its first stoke when the machine is restarted engages the lower end of the lever to move it clockwise and allow plate 24 to clamp, and thus tension, the thread.
Patent GB-858044-A (GB)
Title: Method for improving the colour-stability of acrylonitrile-styrene copolymer
IPC: C08F220/44
Filed: 1959-05-05
Abstract: Copolymers of acrylonitrile and styrene or an alkyl substituted styrene are made by copolymerizing a mixture of the monomers in the liquid phase and at elevated temperature in the presence of an organic amine which is volatile at the copolymerization temperature employed, or ammonia, or a compound which decomposes to liberate ammonia at the chosen temperature.  The temperature is preferably between 100 and 150 DEG C.  The amine or ammonia is said to function as a vapour-phase copolymerization inhibitor.  Specified amines and compounds which liberate ammonia are ammonium hydroxide, carbonate, and carbamate, methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, propylamine, isopropylamine, isobutylamine, and methyl-isobutylamine.  The polymerization in the liquid phase can be effected in the presence of water, or an inert diluent such as toluene, heptane, or methyl ethyl ketone.  The amine, ammonia, and compounds which decompose to liberate ammonia may be added at any stage of the polymerization or mixed with either or both of the monomers.
Patent GB-1121057-A (GB)
Title: Improvements in or relating to cutting and/or welding plastics
Inventor: SULLIVAN ARTHUR BASIL JOSEPH
IPC: B23K26/40
Filed: 1966-04-06
Abstract: 1,121,057. Seaming non-metallic sheet material; cutting plastics with laser beams. NATIONAL RESEARCH DEVELOPMENT CORP. 4 May, 1967 [6 April, 1966], No. 15424/66. Headings B5A and B5K. [Also in Division H1] Plastics materials are cut and/or welded using a laser beam. In one application, aligned edges of plastics sheets are held together between metal jaws so that the edges to be joined protrude slightly and a laser beam is directed on to and run along these edges to form a molten seam which is then allowed to cool. Preferably, the beam is held stationary and the jaws are passed across the beam. The edges of the jaws may be rounded to form a trough or narrow channel therebetween or are shaped to form a cylindrical trough surrounding the edges to be welded to act as a mould to form a beaded seam. In another application, two sets of jaws positioned fairly close together grip a web of double plastics material. The laser beam traverses the material between the two sets of jaws to simultaneously out and weld the web. In a further application, to out a buttonhole in a plastics sheet, the laser beam is sharply focused and traversed over the sheet to make the slot and is then broadened to make the eye of the buttonhole. Alternatively, a buttonhole shaped stencil is interposed between the laser and the sheet.
Patent GB-212799-A (GB)
Title: Improvements in or relating to guards or protectors for cocks, taps, spigots or similar filling or delivery devices
IPC: B67D7/42
Filed: 1923-06-14
Abstract: 212,799. Henry, A. R. June 14, 1923. Protecting covers. - A guard for use in outlets discharging liquids into a vessel or holder and particularly adapted for use in connection with petrol supply pumps comprises a conical flexible cover secured to the outlet adapted to fit over and around the inlet of the receiving vessel. The cover A is made of water-proof canvas, rubber, leather or other flexible material and may be provided with a window A<1>. The cover is clamped to the outlet by a band D or it may be attached by a screwed or resilient ferrule and may be allowed to slide within limits on the outlet. A vent pipe E may also be fitted.
Patent GB-102062-A (GB)
Title: Improvements in or relating to Revolution Counter Apparatus.
Inventor: JAEGER EDMOND
IPC: G06M1/06
Filed: 1916-05-25
Abstract: 102,062. Jaeger, E. May 25, 1915, [Convention date]. Associated counters, trip, total, and like.- Trip-and-total counters for use in the speed-indicating apparatus described in Specifications 100,542 and 102,061, [Class 106 (iii), Fares &c.], are driven by spur, bevel, and worm gearing, a common shaft 14 serving to drive both the trip and total shafts 17, 18. The gearing may be so arranged that the lowest drum on the trip counter shows tens, and the total counter hundreds on the lowest drum. Transfer mechanism.-Motion is communicated to the numeral-drums through friction springs 21, Fig. 6, which are secured to the drums and engage grcoves in the shafts 17, 18. Normally, the drums are locked by the engagement of shoulders 25 on pawls 23 with pins 20 or other projections carried by the drums, the pawls being supported by cams 22 carried by the drums. In the case of the total counter, a cam 22 controlling the lowest drum is carried by the shaft. At the transfer point, the pawls fall into grooves 26 in the cams and allow the higher drums to move with their shafts until locked by the pawls being again lifted. Zeroizing-mechanism.-To allow the trip counter to be zeroized, the driving worm-wheel is locked to the shaft 17 by a friction clutch comprising a spring 30, Figs. 3 and 7, carried by the wheel ar.d engaging a disk 31 secured to the shaft 17 and situated inside the adjacent drum. The countershaft is rotated in the direction of the arrow b. Fig. 5, by a milled head 28 until the pawls fall into the grooves 26, and then in the direction of the arrow a to show zero at the sight-openings. Cams 22 are provided on the highest indicating- drums to co-operate with spring-pressed pawls 23 for zeroizing purposes only.
Patent GB-786716-A (GB)
Title: Improvements in or relating to supply arrangements for electric motors
IPC: H02K17/24
Filed: 1956-05-18
Abstract: 786,716. Winding lay-outs for dynamoelectric machines. FERNSEH GES. May 18, 1956 [May 20, 1955], No. 15562/56. Addition to 771,872, [Group XXXVII]. Class 35. In a polyphase motor whose stator and rotor are supplied with different frequencies by means according to the parent Specification, and having a sinusoidal flux distribution, the combined resistance of the source having a low D.C. resistance and the winding connected to it is equal to or less than :- where (ni) 2  and (ni) 1  are the ampere-turns of the two windings, T is the moment of inertia of the rotor, r is its radius, l is its length and lg the width of the air-gap between stator and rotor.
Patent GB-628305-A (GB)
Title: Process for the manufacture of folic acid
IPC: C07D475/04
Filed: 1947-06-13
Abstract: Folic acid is prepared by hydrogenating 2 - amino - 6 - hydroxy - 8 - pteridylaldehyde in an inert solvent or formic acid in the presence of p-aminobenzoyl-1-(+)-glutamic acid and a hydrogenation catalyst. When formic acid is used as the solvent, any formyl folic acid formed during the reaction is converted to folic acid by treatment with ammonia.  In examples, 2 - amino - 6 - hydroxy - 8 - pteridylaldehyde is hydrogenated in accordance with the above process in formic acid solution in the presence of palladium charcoal.  The numbering of the pteridine ring is as follows: <FORM:0628305/IV (b)/1>
Patent GB-673777-A (GB)
Title: A method of cast-forging metals
IPC: B21D22/02
Filed: 1950-06-22
Abstract: 673,777. Casting-machines. KROYER, K. K. K. June 22, 1950, No. 15619/50. Class 83 (i). In casting molten metal, e.g. aluminium or an alloy thereof, a quantity is poured into a die, this and an upper die are closed in two stages, the second being much slower than the first and initiated suddenly when the volume of the die is only slightly more than that' of the casting. To avoid much exposure of the molten metal, the movement of the dies should be rapid during the first part of the closure. This may be effected by a mechanical press using e.g. cams of a shape to secure a sudden reduction of speed or by using a hydraulic press capable of quick movement at low pressure and slow movement at high pressure. Such a press with a known device to change from quick to slow automatically when resistance is encountered may be used and an adjustable device is arranged between the diecarrying plates 3, 4 to produce this resistance at the point required. Such device may consist of an adjustable stop 7, Fig. 3, adapted to engage a spring 8 or the like or to be carried by a piston 13, Fig. 5, in a hydraulic cylinder 12 with an adjustable check valve 16. In another modification the lower die 1, Fig. 6, is moved up by a piston 3<SP>x</SP> in a cylinder 17 supplied by high and low-pressure pumps and the lower table 3 has a projection 23, which at the appropriate position, closes a valve 27 to stop the supply of low-pressure liquid. In another modification the projection 23 operates a switch to stop the electric motor driving the pump 20. The process may be used for making aircraft &c. engine pistons from alloys not hitherto cast.
Patent GB-878680-A (GB)
Title: Production of linalyl acetate
Inventor: NAYLER PETER
IPC: C07C69/145
Filed: 1959-05-07
Abstract: Linalyl acetate is prepared by contacting linalol with ketene at a temperature below 30 DEG C. in the presence of an acid esterification catalyst such as para-toluene sulphonic acid or sulphuric acid.  In the examples the ketene is passed into linalol containing the catalyst at 0-20 DEG C.; in a comparative experiment similarly effected but at 50 DEG C., the linalyl acetate is contaminated with, e.g. geranyl acetate.
Patent GB-781469-A (GB)
Title: Improvements in or relating to rigid polyester-urethane thermoplastics
IPC: C08G18/42
Filed: 1954-05-27
Abstract: Thermoplastic polyurethanes useful as adhesives are obtained by reacting an aromatic diisocyanate, with a linear polyester of molecular weight 400-1500 and derived from an aliphatic dicarboxylic acid of 4-10 carbon atoms and a glycol of 4-10 carbon atoms, the polyester preferably having a negligible acid number.  The molar proportion of isocyanate to polyester should be from 0.9 to 1.5 to 1. Specified diisocyanates are 1.5 naphthalene, diphenylmethane-p.p1, triphenylmethane-p.p1, metatoluene, phenylene and benzidine diisocyanates.  In examples: (1)-(3) three polytetramethylene adipates of molecular weight 406, 847 and 995 were reacted with equimolar proportions of paraphenylenediisocyanate to give thermoplastic polymers of softening points 150 DEG  C., 110 DEG  C. and 85 DEG  C. (4)-(7) a polytetramethylene adipate of molecular weight 847 was reacted with paraphenylene diisocyanate using 0.97, 1.00, 1.03 and 1.06 mols. of diisocyanate per mol. of polyester.  The softening points of the products were 90 DEG  C., 110 DEG  C., 125 DEG  C. and 200 DEG  C. respectively.  (8)-(10) As in (1)-(3) but using 1.5 naphthalene di-isocyanate to give polymers having softening points of 140 DEG  C., 100 DEG  C. and 75 DEG  C.  In further examples the products were used to units layers of polyvinyl chloride, the products applied molten.  The products are soluble in solvents such as dimethyl formamide and tetramethylurea.  A polymer from polytetramethylene succinate and p-phenylene diisocyanate of softening point 200 DEG  C. is also referred to.
Patent GB-284529-A (GB)
Title: Propellor pencil
IPC: B43K21/08
Filed: 1927-06-13
Abstract: 284,529. Fend, K. June 13, 1927. No Patent granted (Sealing fee not paid). Pencil holders; pencils; erasers. -A propelling pencil holder consists of a propeller i connected to a plunger h slidable under the influence of a resilient member such as a spring f in an internal sleeve b, the plunger being moved to propel the lead by means of an external sleeve e sliding on the outer casing a and connected to the internal sleeve by a pin d passing through a slot in the casing. The lead and the bore of the point-section k of the holder are of non-circular cross-section to prevent relative rotation. The refill receptacle n is housed in the rear end of the casing, and is provided with a recessed bottom for the reception of an eraser o. The length of the sleeve e may be such that the distance between its lower end and the joint between the casing and the pointsection indicates the length of lead remaining. To propel the lead, the holder is gripped by the sleeve e and the point pressed on to the table, the spring f being thus compressed and the casing retracted relatively to the sleeve to project the lead. To retract the lead, the point, is placed on a table and pressure applied to the rear end of the holder.
Patent GB-240248-A (GB)
Title: Improvements in and relating to railway rails
IPC: E01B11/32
Filed: 1925-02-12
Abstract: 240,248. Thomas, C. O. W. Feb. 12, 1925. Rail joints, welded, and with tread fish-plates. -The upper surfaces of the rail ends a are provided with additional metal e projecting a'bove the running level of the rails and either integral with the rails or independent of them but secured thereto. In the former case, Fig. 1, the additional metal is either formed on the rails when manufactured or is welded to them afterwards. In the latter case, Fig. 4, the metal forms a tread bridge with a flange h fitting the sides of the rail heads and secured bv screws i to one or both rails. In both cases the additional metal wears down or is hammered down by the traffic to the normal level of the rails, and will not sink further owing to the hardening of the metal by the traffic.
Patent GB-1109667-A (GB)
Title: Improvements in or relating to the surface melting of metal bodies
IPC: B23K10/02
Filed: 1965-04-14
Abstract: <PICT:1109667/C6-C7/1> The surface of a metal body 18, is melted by a plurality of constricted arcs which are oscillated across the surface.  The melting is for the purpose of removing surface defects therefrom of for introducing alloying ingredients such as chromium into a carbon steel body to form thereon a surface of stainless steel.  A plurality of torches T are mounted in a box 26, Fig. 7, into which a protective gas such as argon is introduced through inlet 30. A housing 34 disposed downstream of the box has a porous partition 40 above which shielding gas is admitted through inlet 36. The work 18 is moved under the box on rollers 28 whilst the box 26 and housing 34 are reciprocated transversely by a crank mechanism (50), (52) Fig. 8 (not shown). The torches are inclined to the work surface, Fig. 2 (not shown), and each comprise a non-consumable electrode 11, Fig. 1 (not shown), of graphite, tungsten, thoriated tungsten or copper and a water cooled constricting nozzle 12 fed with argon, argon and hydrogen, or helium.  To prevent the molten surface metal from escaping, graphite dams 19, Fig.6 (not shown), are disposed along the sides of the work.  The electrodes may be supplied with 3-phase A. C. Figs 3, 4 (not shown), a combination of A. C. and D. C. current, Figs. 9, 9a, 9b (not shown), or six-phase A. C. current, Figs. 10a, 10b, 10c (not shown).  The alternating currents produce interacting magnetic fields which oscillate the arcs.  For preventing outward deflection of the outer arcs, longitudinal conductors 120, Figs. 9b. 10c (not shown) are placed along the edges of the work.  The work may be initially cold or hot, for example the surface conditioning may take place between rolling stages.  Specific examples are given for conditioning the surfaces of stainless steel and titanium and for alloying the surface of a low carbon steel workpiece with chromium by spraying on to the surface ferrochrome powder in a binder of sodium silicate.
Patent GB-1129736-A (GB)
Title: Switching system
Inventor: ROLAND GERT
IPC: G05B19/416
Filed: 1967-04-07
Abstract: 1,129,736. Programmed control of machine tools. STARKSTROM-ANLAGENBAU KARLMARX STADT VEB. April 7, 1967, No. 15997/67. Heading G3N. In a numerical control system for operating and processing machines a distance governed transport feed-rate selection, within a range of pre-set preliminary coincidence points is effected through coincident point set OR-elements and feed-rate determining AND-gates interconnected through negators. As shown, when a programmed movement is initiated preliminary coincidence points, A, B, corresponding to particular difference values, from a comparator between the actual and the required position values, are present as L signals at one input of each of OR-gates O1 02. When a transport feed rate Fl is called in through input a of an AND-gate Ul the machine past is moved at this feed-rate until the first preliminary coincidence point A is reached, at which the L signal from OR- gate O1 is cancelled. The feed-rate F1 is then cancelled and a feed-rate V1 initiated through a negator N and an AND-gate U2 enabled by the OR-gate 02. At the second preliminary coincidence point B the L signal from OR-gate 02 is cancelled, thus cancelling feed-rate V1, and initiating a feed-rate 5, through a negator N2, by an AND-gate U3. At the desired position HK, a L signal, through a negator N3, cancels the AND- gate U3 to terminate the movement of the part. For rapid return feed, an X signal to the OR-gate O1 is fed to a second input of the OR-gate 02 and to the AND- gate Ul for the feed-rate F1. The signal X continues over the entire distance to the desired position. The system can be modified to enable the order of the transport actions to be changed by intercalating further OR-gates between the negators and associated feed-rate AND-gates. The number of feed-rates can be increased or reduced by connecting further AND-gates in parallel with the feedrate AND-gates.