baber/WOPTO huggingface dataset:
Patent GB-870605-A (GB)
Title: Improvements in or relating to static inductive apparatus
IPC: H01F27/20
Filed: 1959-09-07
Abstract: 870,605. Transformers. WESTINGHOUSE ELECTRIC CORPORATION. Sept. 7, 1959 [Sept. 12, 1958], No. 30418/59. Class 38 (2). A high-voltage transformer includes high-voltage windings 13 in the form of a stack of discshaped sections, spaced by insulating members 14 of radial width equal to or less than that of the coil sections. Static rings 10, having rounded edges to reduce electrical stress concentrations, are placed at the top and bottom of the stack. Bearing upon each static ring 10 is a pressure collar 11 of insulating material, a groove being formed in each ring to accommodate one end of the collar. Within static ring 10 is formed a channel 15 with a series of holes 16 (Fig. 3) through which cooling liquid passes and flows over the windings before evaporating to provide a gaseous dielectric. Suitable dielectric liquids are fluorinated compounds such as perfluorocyclic ether or sulphur hexafluoride which evaporate into an electronegative gaseous dielectric. Static ring 10 has a radial gap 18 to prevent eddy currents, and it is connected to one lead of the upper coil, coolant inlet tube 17 acting as an input terminal. Coolant is supplied to inlet 17 either through an insulating tube or by means of a free stream falling into a receptacle (Fig. 4, not shown) connected to inlet 17, the receptacle having rounded corners. Modified forms of static ring are described having two coolant channels, one form in which a central partition gives increased mechanical strength (Fig. 5, not shown) and a second form in which pressure collar 11 rests directly upon a second pressure collar (Fig. 6, not shown) and the static shield is disposed about collar 11 and rests upon the second collar. Further embodiments are described in which the pressure collar and static ring are combined in a single unit. In one of these embodiments (Fig. 10) the static ring is in the form of a hollow toroid 53, through which the coolant flows, set in a member 55 of insulating moulding or casting material forming the pressure collar. In all these embodiments an end ground shield in the form of an annular plate with an upwardly curved outer edge lies on top of the pressure collar and pressure is applied to the coil stack 1 through plate 51 which lies on top of ground shield 50 and upon which bears pressure bolt 61 attached to end frame member 60. In a final embodiment (Fig. 11) which dispenses with end ground shield 50 a second hollow toroidal duct 70, of round or oval section, is cast in static shield-pressure collar 55 separated as far as possible from static-ring duct 53. Coolant passes through duct 70 and through radial holes on to the low-voltage winding.
Patent GB-756292-A (GB)
Title: Improvements in or relating to chlorinated paraffin wax
IPC: C10G73/38
Filed: 1954-10-22
Abstract: Chlorinated paraffin wax having from 18 to 36 carbon atoms and containing from 50 to 80 per cent of chlorine, prepared by passing chlorine through a solution of the paraffin wax in an inert solvent, is stabilized by removing the solvent in the presence of a water-soluble compound capable of releasing a phosphate-containing ion in water solution.  The solvent may be carbon tetrachloride, and the phosphate compound may be alkali metal and soluble alkaline earth metal phosphates, such as trisodium phosphate, sodium pyrophosphates, metaphosphates such as trimetaphosphates and hexametaphosphates, and polyphosphates such as tripolyphosphate, tetrapolyphosphate and decaphosphate. The phosphate compound is used in an amount between 0.05 and 2.5 per cent by weight of the chlorinated paraffin wax.  The solvent may be removed by steam distillation.  Examples of the process are given, using sodium tripolyphosphate and trisodiumphosphate.
Patent GB-1072167-A (GB)
Title: Improvements in or relating to oxa-1-azabicycloalkane derivatives
Inventor: GRIOT RUDOLF G
IPC: C07D513/04
Filed: 1964-08-04
Abstract: Compounds of the general formula <FORM:1072167/C2/1> wherein R1 signifies a hydrogen atom, an alkyl radical of 1-4 carbon atoms or an aryl radical, R2 signifies an alkyl radical of 1-4 carbon atoms or an aryl radical and n is 2-5 inclusive, are prepared by the reductive splitting off of the benzyl radical from a compound of the general formula <FORM:1072167/C2/2> where R1, R2 and have the above significance which is followed by spontaneous cyclization. The compounds are novel except for those wherein R1 is H, R2 is methyl and n is 2 or 3 and where R2 and R3 are methyl and n is 2.  The compounds of the second formula above are prepared by reacting a compound of formula <FORM:1072167/C2/3> and a lactam of formula <FORM:1072167/C2/4>  Pharmaceutical compositions comprise a compound of the first general formula above and an inert diluent or exipient for oral or parenteral administration, the said compositions having anticonvulsive activity.
Patent GB-985244-A (GB)
Title: Sheet array of magnetic metal elements and methods of making same
IPC: H01F10/10
Filed: 1962-08-09
Abstract: 985,244. Magnetic memory systems. RADIO CORPORATION OF AMERICA. Aug. 9, 1962 [Aug. 31, 1961], No. 30599/62. Heading H3B. A sheet of magnetic memory elements is produced by coating a metal sheet with etch resistant material, etching the sheet to form the elements and apertures and then coating the sheet so formed with a resilient insulating material before heating to a temperature which mechanically deteriorates the etch resistant material to remove any stresses produced in the elements. As shown, a sheet 26 is electroetched after applying a photoformed resist layer 28, 30 in such a pattern that apertures in the elements are etched from both sides of the sheet but the gap 38 between an element and the sheet are bridged by a web 30 of the resist material. The etching of an element ceases as soon as the gap 38 is etched through and the contact broken. A layer 40 of resilient material such as silicone rubber is then applied and the whole is heated to remove stresses in the elements. A thermoplastic 44 is then applied to the layer 40 and printed conductors 22, 24 are formed thereon. The unit is then heated to soften the thermoplastic 44 and prevent stresses being transferred from the conductors to the elements. The thermoplastic layer may be replaced by a silicone grease surrounded by a plastics layer, the final heating phase being then unnecessary. Examples of suitable materials and dimensions are given in the Specification.
Patent GB-490205-A (GB)
Title: Improvements in or relating to television transmitting apparatus
IPC: H04N5/217
Filed: 1936-11-10
Abstract: 490,205. Television; cathode ray tubes. BLUMLEIN, A. D., and BROWNE, C. O. Nov. 10, 1936, Nos. 30610/36 and 8466/37. [Classes 39 (i) and 40 (iii)j Signals of a wide range of frequency and including spurious undesired signals of a low frequency are interspersed with other signals of a datum level and recurrent at a frequency higher than that of the undesired signals, frequencies below a predetermined frequency are attenuated to remove the undesired signals, and the suppressed low frequency and D.C. components of the desired signals are reinserted by reference to the recurrent signals of datum value. An image of an object to be transmitted is projected on a mosaic screen 5 to give the elements an electrostatic charge, which is periodically discharged by a scanning ray, and the spurious " tilt " component of the signals is removed by signals corresponding to black which are formed by breaking up the image by black strips 20. Frequencies in the signals up to a frequency higher than, or equal to, the tilt component are attenuated, and the suppressed components of the picture signals are reinserted, as described in Specification 422,906. The interspersed black signals have a duration equal to that of the picture signals between them, the signals, with the spurious signals removed, are transmitted through the transmitter by utilizing the interspersed black signals as a carrier, and the D.C. component is reinserted by rectification, Fig. 8 (not shown). If a full-wave rectifier is used, the interspersed signals appear of the same brightness as the preceding signal, Fig. 5 (not shown). The image may be projected on the mosaic through a grid, which casts a shadow on the mosaic and thus produces the black signals. The grid may be reciprocated to render its image less apparent in the received picture. As shown, the supporting screen 16 of the mosaic is transparent or translucent, the optical image is projected on the side of the screen which is opposite to the mosaic and has on it an opaque conducting grid 20 which is the conductive signal plate of the apparatus. The black signals may be removed by mixing undelayed picture signals with signals of the same amplitude which have been delayed by an amount corresponding to the duration of the black signals. To obtain a closer approximation to the original, the undelayed signals are mixed with corresponding signals of twice the amplitude and delayed by the duration of the black signals and with a signal of the same amplitude as the undelayed signal, but delayed by twice the duration of the black signal. The reinsertion may take place at the receiver.
Patent GB-682333-A (GB)
Title: Electric motor speed controller
IPC: H02P25/18
Filed: 1949-11-29
Abstract: 682,333. Electromagnetic interrupters; controllers. TRIGGS, W. W. (White Sewing Machine Corporation). Nov. 29, 1949 No. 30623/49. Classes 38 (iii) and 38 (v) The speed of the motor of a sewing machine or other device is controlled by arranging in series with it an electromagnetic interrupter and adjusting the duration of the full-voltage impulses delivered to the motor. The interrupter contacts are adapted to short circuit an impedance, which may be the electromagnet of the interrupter. Impulses at full voltage but of varying duration are thus supplied to the motor, while the current to the latter is never completely cut off. The interrupter is operable by A.C. or D.C. In the form shown the electromagnet 25 has pole pieces 13, 27 which attract downwards an armature 16 mounted on a blade spring 17. The armature 16 is in the form of a hollow rectangle excircling the pole 13 and the blade 17 with its contact 23 projects like a tongue into it. The armature carries a single turn 28 of zinc or other conducting material to provide damping of the armature the frequency of which is perhaps one tenth of that of the A.C. when A.C. is used. A condenser 42 mounted on an iron member 11 is connected between the contact 23 and its cooperating contact 30. A spring-biased plunger 33 is pressed by hand, or foot or the like so as first to close contacts 32, 31 in series with the interrupter and then to vary the position of the contact 30 thereby varying the proportion of "make" to "break". With A.C. current, the alternations of the current set the armature into forced vibration, even when the contact 30 is too far off to be engaged. With D.C. current the vibration of the armature is produced by the short-circuiting of the electromagnet.
Patent GB-1425497-A (GB)
Title: Photodegradable thermoplastic compositions
IPC: C08K5/00
Filed: 1973-06-27
Abstract: 1425497 Photo-degradable polymer compositions BADISCHE ANILIN- & SODAFABRIK AG 27 June 1973 [1 July 1972] 30626/73 Heading C3P Photo-degradable compositions comprise (1) a thermoplastic synthetic polymer and (2) 0À01 to 5 per cent, based on the weight of the polymer, of a photo-degradation accelerator of formula where X is C n H 2n  linked in the α,# or α,# positions, n is 2 to 8, each A is a 5- or 6-membered carbocyclic or N-heterocyclic aromatic ring, and each R is hydrogen, chlorine, C 1-3  alkyl or C 1-3  alkoxy. The polymer may be derived from ethylene, propylene, butene, 4-methylpentene-1, styrene or vinyl chloride, or may be a polyamide, polyester or polyurethane. Specified prodegradants are ketals of benzil with ethylene glycol, propylene glycol, trimethylene glycol, 1,3-butanediol and 2,2-dimethyl propane-1,3- diol; and ketals of ethylene glycol with 2,2<SP>1</SP>- and 4,4<SP>1</SP>-dichlorobenzil. The compositions may contain conventional additives and may be made into mulching sheets and, optionally after foaming, into containers and packaging products. Examples describe sheets of compositions comprising (1) polyethylene and 2-pchlorophenyl - 2 - p - chlorobenzoyl - 1,3 - dioxole, and (2) polypropylene and 2-phenyl-2- benzoyl - 1,3 - dioxole, and foamed sheets of compositions comprising (3) polystyrene and 2- benzoyl-2-phenyl-5,5-dimethyl-1,3-dioxole.
Patent GB-262764-A (GB)
Title: Means permitting of the reduction of the resistance to flight both in the air and on water of aeroplanes, hydro-aeroplanes and hydrogliders and for facilitating the landing of aeroplanes and hydro-aeroplanes
IPC: B64C23/08
Filed: 1926-12-03
Abstract: 262,764. Bidoire, M. A. L. Dec. 11, 1925, [Convention date]. Resistance to propulsion, reducing.-Friction of the floats, &c. of aircraft or the hulls of hydroplane boats is diminished by the use of endless bands on the under surface passing over freelypivoted rollers and exposed to the stream of water on the receding side only so as to be driven thereby. Fig. 3 shows the invention applied to a hydroplane hull. The speed of the bands may be limited by using them to drive a dynamo for wireless or lighting. In the case of a float, Fig. 5, the lower surface of the band may be under pressure from spring-pressed rollers 22. Two such floats may be mounted laterally of the fuselage by knuckle-joints 24 with means by which the pilot can vary their incidence. The elevator also may be formed as a float, with a band on its under side. The bands may be of rubber or rubber-coated fabric, or (especially for landing devices) may consist of metal sections 25, Fig. 9, pivotally assembled on cross-rods 26 which take into flutes on the rollers.
Patent GB-886862-A (GB)
Title: Improvements in textile ring twisting machines
Inventor: SCOWCROFT HECTOR
IPC: D01H7/64
Filed: 1959-09-08
Abstract: 886,862. Ring-twisting machines. T.M.M. (RESEARCH) Ltd. Aug. 24, 1960 [Sept. 8, 1959], No. 30653/59. Class 120(2) In a ring-twisting machine, especially a drawtwister for nylon &c., the ring-holder is retained on the ring-rail by magnetic means, and means are provided for detaching it and guiding it to a lower position so that the package may be removed without interfering with the build of any other package. In Fig. 2, a ring-holder 16 has a depending part 161 slidable on a poker 11 secured to a housing 12 carried by the ring-rail 10; the housing has a magnet 18 attracting an extension 164 of the holder. The holder has depending portions 165, 166 Fig. 3, in which is slidably mounted a bolt 19 normally urged by a spring 21 into a socket 23 in housing 12. To free the ring- holder, the bolt is rotated by a handle 193 for a cam 23 to engage part 166 to withdraw the bolt from the socket, and for a second cam 22 to engage the undersurface of a part 122 of housing 12 to force the ring-holder downwardly to overcome the attraction of the magnet. The holder is now freed to be lowered to a position where the package can be doffed, being guided on the poker by depending part 161. To restore the holder to operative position, it is raised until its bevelled end engages a bevelled face 123 on the housing whereby the bolt is forced back against the action of spring 21 so that it can spring into its socket. The ring-holder is located in operative position by the engagement of a dowel pin in the housing 12 with a hole in the holder. According to the Provisional Specification, the ring-holder has a carriage running on a tube depending from the ring-rail, and a second catch may be provided to secure the holder to the rail, the magnet being dispensed with.
Patent GB-731047-A (GB)
Title: Photographic objective
IPC: G02B13/00
Filed: 1953-11-05
Abstract: 731,047. Photographic objectives. AGFA CAMERA-WERK AKT.-GES. Nov. 5, 1953 [Nov. 18, 1952], No. 30674/53. Class 97 (1). In an objective comprising two simple outer convergent components enclosing two negative meniscus doublet components concave to a central diaphragm and with the negative elements innermost, the sum of the thickness of the negative element in the front doublet and the thickness of the central airspace is greater than 0.24 times the focal length of the whole system and the distance between the internal surface of the front doublet and the focus of the two front positive lenses is less than 0.75 times the focal length of the said two positive lenses. Such an objective allows the use of a small size shutter. Optical data are given for two examples of the objective shown.
Patent GB-136555-A (GB)
Title: Improvements in Mowing and Reaping Machines.
IPC: A01D34/26
Filed: 1919-12-09
Abstract: 136,555. Maschinenfabrik Fahr Akt.- Ges. Oct. 20, 1917, [Convention date]. Reaping and mowing machines. - In reaping and mowing machines in which the cutter is adapted to be secured in either of two elevated positions by locking the lifting-apparatus, the locking-detent is pivoted on the frame and engages notches in the lifting-lever. Fig. 2 shows the mechanism in the position for supporting the cutter at some distance above the ground. The pivoted detent or locking-bar 8 is normally pressed upwards by a spring 11 and is actuated by means of a pedal 12. It carries a roller 13 engaging in a notch 7 in the lifting-lever 1. When the cutter is raised into the vertical position, the roller 13 enters a notch 6 in the lifting-lever. When the roller 13 is disengaged from the notches 6, 7. the cutter falls to the ground.
Patent GB-927422-A (GB)
Title: Improvements in or relating to power transmission
Inventor: RITTER KASPAR
IPC: B60K17/28
Filed: 1961-08-25
Abstract: 927,422. Hydraulic transmission systems. KOPAT-GESELLSCHAFT FUR KONSTRUKTION, ENTWICKLUNG UND PATENTVERWERTUNG m.b.H. Aug. 25, 1961 [Aug. 27, 1960], No. 30805/61. Class 69 (2). [Also in Groups XXIV and XXXI] A tractor power transmission comprises a torque converter 5 transmitting power to the tractor wheels and a shaft 3 extending coaxially through the torque converter 5 transmitting a drive from the engine 1 to a power take-off 36. The rear wheels are driven from the engine 1 through shaft 3, primary piston plate 4 of the hydrostatic torque converter 5, casing 12 of the converter, epicyclic gearing 22, spur gears 23, 24, bevel gears 25, 26, differential gears (not shown) and half-shafts 27. The annulus gear of the epicyclic train may either be fixed to the tractor casing 11 or be arranged to be connected to either the casing 11 or the planet wheel carrier as required by a pair of brakes to give two speed ranges. The torque converter comprises, in addition to the primary pump plate 4 driven by shaft 3, a fixed secondary pump plate 6 mounted on stationary sleeve 7 and a pair of swash-plates 14, 15, the inclination of which is controlled by lever 45 through servo-setting device 46 and axial movement of control member 17 which rotates with the casing 12. Hydraulic pump 9 supplies fluid to the device 46 and the power lift mechanism 47 and through line 43 and the hollow interior of sleeve 7 to the converter 5 to replace leakage losses. A clutch 29 has three alternative positions to connect shaft 31, which drives power take-off 36 through disc clutch 32, either directly with the engine through extension 3<SP>1</SP> of shaft 3 or to spur-gear 23 and the rear wheel drive or to both the engine and rear wheel drive together. Specification 914,699 is referred to.
Patent GB-533796-A (GB)
Title: Improvements in or relating to direction indicators
IPC: B60Q1/34
Filed: 1939-11-25
Abstract: 533,796. Direction indicators for road vehicles. WARE, R. E. Nov. 26, 1939, No. 30816. [Class 118 (ii)] The illuminated arm 5 of a direction indicator is provided with a detachable opaque cover 4 having narrow slots 7 through which a restricted amount of light can pass. The cover can be removed during the daytime to allow the arm to be seen clearly. As shown, the cover consists of a glove of flexible opaque material, such as leather, which is secured on the arm by an edge-to-edge fastener 6. In another form, the cover consists of a metal stamping which may be clipped on or pivoted to the arm.
Patent GB-408717-A (GB)
Title: Improvements in spring balances or weighing machines
IPC: G01G3/02
Filed: 1932-11-02
Abstract: 408,717. Spring balances. SALTER & CO., Ltd., G., and BACHE, E. W., 144, High Street, West Bromwich, Staffordshire. Nov. 2, 1932, No. 30819. [Class 143.] The scale pan support or weighing platform is provided with a depending part which is guided vertically relatively to a stationary support or stand by rollers, or pins on one part engaging slots or grooves on the other part. The platform 3 is secured by a connecting piece 11 to the box-shaped depending part 4, the open front part of which faces the rear of the plate 2. Side flanges 8, and supporting feet 6, 7 are formed integral with the plate 2 by bending. In the construction shown, the part 4 is guided vertically by : (1) two pairs of rollers 16, 17 mounted on pins carried by bent out lugs integral with the plate 2, the rollers engaging slots 14, 15 in the part 4 and (2) a pair of rollers 19, 20, carried by the plate 2 and engaging slots 10, 21 in the back of the part 4. The moving parts are supported by a helical spring 5 anchored to the plate 2 by a bell-crank lever 25 with a zero adjusting screw 28. The pointer 30 is actuated by a toothed rack and pinion. A sheet metal cover 34 may be sprung on from the rear.
Patent GB-347091-A (GB)
Title: Improved method of clamping scaffold poles and the like
IPC: E04G7/08
Filed: 1929-10-11
Abstract: 347,091. Scaffolding. PERTIERRA, R., 379, Alberti Street, Buenos Aires. Oct. 11, 1929, No. 30856. [Class 20 (ii).] A method of clamping together scaffold poles and the like consists in stretching around the poles a hoop or band, tightening the hoop or band so as to produce grooves in the poles, and then securing the ends of the band together by a clasp while it is still under tension. In the construction shown two poles a are secured together by bands 1 of rectangular crosssection. The bands are tightened by any suitable means so that they bite into the posts on three sides thereof. The ends of the bands are secured together by clasps 2 such as are used for clasping the hoops of bales of wool and cotton. Reference has been directed by the Comptroller to Specifications 15041/99, [Class 20, Buildings &c.], 219,501 and 277,905, [both in Class 20 (ii), Buildings and structures, Miscellaneous accessories, &c.].