baber/WOPTO huggingface dataset:
Patent GB-1430343-A (GB)
Title: Method of producing phenolic moulding materials
IPC: C08L61/00
Filed: 1974-01-30
Abstract: 1430343 Phenolic moulding composition NIZHNETAGIL ZAVOD PLASTMASS 30 Jan 1974 4254/74 Heading C3R Phenolic moulding material based on a phenolaldehyde resin is prepared by condensing a phenol and an aldehyde under anhydrous conditions in a molar ratio of 1 to 0À3-1À5 in the presence of a filler, other conventional additives and a mono- or dihydric C 2 -C 8  alcohol, said alcohol being used in an amount of 1-10 p.b.w. per 100 p.b.w. of the phenol, at temperatures of 130-250 C. until the maximum volatiles content is 7 wt. per cent. The percentage content of ortho linkages in the phenolic material produced generally ranges from 60-80% of the total amount of ortho and para linkages and its IR spectrum is characterized by absorption bands at 760 cm.<SP>-1</SP> and 830 cm.<SP>-1</SP>, the one at 760 cm.<SP>-1</SP> being of greater intensity than that at 830 cm.<SP>-1</SP>. Suitable phenols include phenol, cresol, xylenol or mixtures thereof, the phenol fraction of coal tar and resorcinol. Suitable aldehydes include paraform, hexamethylenetetramine, furfural or mixtures thereof. Suitable alcohols include ethyleneglycol, diethyleneglycol, n-octanol, and 2-ethylhexanol. Suitable fillers are wood flour, cotton cellulose, asbestos or fibreglass. The filler is preferably used in an amount of 100-130 p.b.w. per 100 p.b.w. of phenol. Suitable additives are kaolin and talc to increase heat resistance, MgO and CaO as curing accelerators, stearine, calcium stearate or oleic acid as lubricants. The process is preferably carried out in an extruder.
Patent GB-862153-A (GB)
Title: Tooth profile checking apparatus
Inventor: FLAIR HENRY JOSEPH
IPC: G01B5/00
Filed: 1957-02-07
Abstract: 862,153. Gauging toothed gears. ILLINOIS TOOL WORKS. Feb. 7, 1957, No. 4270/57. Class 106 (2). [Also in Group XXII] An apparatus for checking tooth profiles of circular toothed workpieces 130 includes a checking member 94 mounted for combined rotation and radial motion with respect to a centre spaced from the centre of the workpiece 130, and means 26 for imparting to the member 94, radial motion of less magnitude than the circumferential motion due to rotation, for causing the member 94 to define substantially the theoretical profile of the tooth being checked. A carriage 14 is slidably mounted on the base 12 and may be adjusted by a hand wheel 22, and locked by a screw 24. Fixed to the carriage 14 is a master cam 26 and a shaft 28 on which is pivoted a head 30. On an extension 34 of the head 30 is a slide 36 urged by a tension spring 40 against a lever 56, 52. The lower arm 52 of this lever carries a roller 54 acting on the cam 26 and the upper arm 56 has a vertically adjustable abutment 60 cooperating with the slide 36. Thus the ratio A/L (see Fig. 1), may be varied. The slide 36 carries a further slide 72 which may be adjusted longitudinally of the slide 36 by a hand wheel 78. Attached to the slide 72 is a pillar 84 on which is fitted a shaft 90 carrying the checking member 94 which is adjustable and a fixed finger 98 engaging with a dial indicator 100, which also actuates a recording mechanism driven in accordance with the rotation of the head 30. In operation, the gear 130 is placed on a shaft 16, and the carriage 14 is adjusted to locate the shaft 28 a predetermined distance from the shaft 16. The upper slide 72 is then adjusted to position the tip 94 of the checking member a predetermined distance from the shaft 28, and the arm 56 of the lever adjusted so that the ratio A/L equals a predetermined value. The head 30 is then turned by a hand wheel, and the action of the cam 26 in displacing the slide 36 and hence the tip 94 radially combined with the circular motion of the tip about the shaft 28 makes the tip follow the theoretical curve of the gear teeth, inaccuracies in the shape of which are shown by the dial indicator 100. A mathematical discussion is given showing how one cam 26 will serve, by means of the adjustments described above, to test a family of geometrically similar gears, e.g. involute, epicycloid cardioid, &c. To check the other face of a gear tooth, the slide 72 is reversed and the head 30 rotated through 180 degrees, the cam 26 being provided with a similar curve on its opposite face. If desired the carriage 14 and head 30 may be mounted on the base of a known machine such as a hobbing machine.
Patent GB-868755-A (GB)
Title: Improvements in or relating to totalisator boards
Inventor: KITZ NORBERT
IPC: A63F3/06
Filed: 1957-02-07
Abstract: 868,755. Monogrammic signs. BELL PUNCH CO. Ltd. Jan. 31, 1958 [Feb. 7, 1957], No. 4284/57. Divided out of 868,753. Drawings to Specification. Class 118. A totalizator indicator board comprises an aggregator utilizing a ten-cathode stepping electronic tube, a signal derived from the glowing cathode being fed to a rotary switch, as disclosed in Specification 868,753, which asserts its motion on the position representative of the particular glowing cathode and feeds energizing current to one of a series of electromagnets, each of which energizes the lamps of a lamp box, as disclosed in Specification 868,762, to give a unique signal. The aggregators form part of the totalizator system as disclosed in Specification 868,754.
Patent GB-433615-A (GB)
Title: Improvements relating to electro-magnetic separators
IPC: B03C1/08
Filed: 1934-02-09
Abstract: 433,615. Magnetic separators. ELECTROMAGNETS, Ltd., and BOX, W. E., 2, Church Street, Colmore Row, Birmingham. Feb. 9, 1934, No. 4287. [Class 72] Supported above electromagnets 8 mounted on a base plate 7 secured to a frame 4 which is pivoted at its upper end to standards 5 and bolted at 'its lower end to standards 6, in any one of these positions is a trough 9 provided with transversely arranged armatures 10 which co-operate with the polepieces 11 of the magnets 8. The trough 9 is oscillated transversely by eccentrics mounted on a shaft 15 and connected at one end to rods 14, the other ends of which are pivotally connected to bars 12 carried by bearings 13 on the plate 7. The trough 9 is provided with brackets 9<a> having holes through which passes the rods 12.
Patent GB-984922-A (GB)
Title: Improvements in or relating to drawing and crimping synthetic polymer filaments
Inventor: JONES GEOFFREY HUGH
IPC: D02G1/14
Filed: 1963-02-02
Abstract: 984,922. Crimping fibres. BRITISH NYLON SPINNERS Ltd. Jan. 10,1964 [Feb. 2,1963], No. 4354/63. Heading D1F. In a process for drawing i.e. molecularly orienting, and permanently crimping or corrugating synthetic polymer filaments e.g. a multifilament yarn, the filaments are heated and pulled under tension to pass once only between means e.g. intermeshing toothed-wheel members or corrugated bands, causing the filaments to follow a sharply zig-zag path and having a component of motion in the mean direction of travel of the filaments at the point of contact therewith. The filaments may be of a polyamide, polyester or polypropylene, and of circular, triangular or trilobal cross-section. As shown, filaments (in the form of one or more yarns Y 1 ) withdrawn over one end of a package 1 through a guide 3 by nip feed rolls 5, 7, are drawn in the span between rolls 5, 7, and draw roll 9 (with separator roll 11) wherein they are wrapped around, and their temperature raised to 140-160‹C. by, an electrically heated snubbing pin 13 and pass through the nip (directly or after passage over the periphery of one) of gear wheels 17, 19, rotating at a speed such that the filament speed between them is less than the surface speed of the draw rolls, and are wound with (added) twist on a ring spindle package 21. The crimped filaments may be treated e.g. false-twisted by frictional contact with a flange on one end of a drum as described in Specification 890,053, to "dephase" the crimp. The wheels 17,19, are maintained at a uniform temperature e.g. by a blast of air directed upwardly into the meshing area or solely against one wheel. The crimp frequency may be adjusted by altering the number of teeth per inch in the wheels; the amplitude may be altered by increasing or decreasing the meshing engagement of the teeth; the teeth may be irregularly spaced and/or meshed; one or both wheels are driven. Filaments emerging from the wheels may be cooled e.g. by a (or the) blast of air to assist crimp setting.
Patent GB-1061471-A (GB)
Title: Improvements in and relating to linear accelerometers
Inventor: STOCKER BRIAN JOHN
IPC: G01P15/00
Filed: 1964-01-31
Abstract: 1,061,471. Accelerometers. MULLARD Ltd. Jan. 19, 1965 [Jan. 31, 1964], No.4355/64. Heading G1N. An accelerometer consists of a gas-filled envelope 4 containing a cylinder 2, heated by an element 3 which lies on an axis joining two thermocouples 5, 6, a metal shield being arranged to surround the thermocouples, cylinder and element. Convection currents set up in the gas by an acceleration along the axis joining the heater and the thermocouples cause a temperature difference between the thermocouples, and the resultant voltage is a measure of the acceleration. Acceleration at an angle to the said axis is measured by having a second pair of thermocouples arranged on an axis which passes through the heater cylinder 2 and is at right angles to the first axis; the two components of the acceleration as measured by the two pairs of thermocouples being combined. The heater element 3 is of alumina-coated tungsten, and the gas may be xenon, helium, or hydrogen at various pressures. The metal shield may be arranged inside the envelope 4, or may form part of the envelope.
Patent GB-1363460-A (GB)
Title: Rofluoropregnenes
IPC: C07J7/00
Filed: 1971-09-24
Abstract: 1363460 5,6,6-Trifluoropregnenes E I DU PONT DE NEMOURS & CO 24 Sept 1971 [1 Feb 1971] 4373/74 Divided out of 1363458 Heading C2U The invention comprises compounds of formula (wherein X is oxo or (α-H, #-OR) where R is H or C 1-4  acyl), and their preparation from a 3#- (C 1-4  acyloxy)-5α-fluoropregn-16-ene-6,20-dione by fluorination to give I (X=α-H, #-Oacyl), optionally followed by hydrolysis to give I (X = α-H, #-OH), optionally followed by oxidation to give I (X=oxo). 3# - Acetoxy - 5α - fluoropregn - 16 - ene - 6,20- dione is prepared from 3# - acetoxypregna- 5,16 - dien - 20 - one via 3# - acetoxy - 5α- fluoro - 6 - nitriminopregn - 16 - en - 20 - one. Compounds I may be further converted as described in Specification 1,363,458. Compounds I, of which that wherein X is oxo is said to have progestational and antiandrogenic properties, may be made up with carriers into pharmaceutical compositions for oral, parenteral and topical administration.
Patent GB-252426-A (GB)
Title: New or improved mechanism for converting rotary motion into oscillating motion
IPC: F16H3/00
Filed: 1925-02-17
Abstract: 252,426. Midgley, A. H. Feb. 17, 1925. Windows and the like, cleaning.-A device for converting rotary into oscillating motion, applicable to operate wind screen wipers on motor vehicles &c. comprise a driving or driven member e with a through aperture accommodating a clutch member o adapted to engage alternately slots, g, g<1> in oppositely revoluble elements d, d<1>, the transfer of the clutch connection being effected automatically by the movements of the parts. As shown, a driving shaft n, through worm gearing l, m and a pinion k on an interdmediate shaft j, rotates toothed wheels d, d<1> constantly in opposite directions, plates f, f<1> secured to the wheels being formed with slots or recesses g, g<1>. Between the toothed wheels, straddling a squared part of the shaft c to be oscillated, is arranged a plate e formed with a through aperture e<2> in which is located a ball o or equivalent member of a size to project beyond the thickness of the plate into engagement with one or other of the slots g, g<1> thereby clutching the member e to the corresponding rotary member d or d<1>. The clutch connection is automatically transferred to the oppositely rotating member when in the course of each half revolution the slots pass one another, oscillating motion thus being imparted to the plate e with a pause at each end of the motion depending upon the length of the slots. Stops may be provided to set positive limits to the angle of oscillation. The reverse arrangement may be employed, the plate e forming a rotary driving member imparting rotation alternately in opposite directions to the toothed wheels d, d' and parts driven thereby. The slots may be shaped to assist the transfer of the clutch connection at the required times. The device may be mounted in a frame or casing as shown, the plate b conveniently forming the end wall of a small electric motor, the shaft n extending therefrom.
Patent GB-178978-A (GB)
Title: Improvements in and relating to spherometers
IPC: G01B5/22
Filed: 1921-02-07
Abstract: 178,978. Pollard, A. F. C. Feb 7, 1921. Surface and outline gauges. - Comprises a method of and means for measuring the radius of curvature of a curved surface, for instance, a lens, at or about a point on the surface, by causing a rolling action to take place without slip between a glass plate on the one hand, and on the other hand, the surface under measurement and a spherical surface of known radius rigidly connected together in such a manner that the points of contact. between the two surfaces and the plate describe arcs which may be observed and the lengths of which, or of their chords may be measured or compared. In the form shown in Figs. 2 and 3, the object 2 the surface of which is to be measured is secured to a pillar 5 carried in a chuck 7 on a base 4. A ball 1 of known diameter is mounted on a three-point support in a cup 3 formed on the base 4. The glass plate 8 rests on the surface 2 and the ball 1 and is supported through the medium of an arm 11 by a float 10 on mercury. The pressure of the plate 8 on the surfaces may be'kept light and is regulated by the adjustable balance weight 12. The level of the mercury can be varied by moving the screw plunger 13 and the plate thus caused to roll on the surfaces. The rolling is measured by observing the displacement of the interference rings of Newton surrounding the points of contact of the glass plate with the surfaces. In the form shown in Fig. 4, the surface 2, say a lens, is cemented on to a vertical pillar 13 which is mounted upon a graduated drum 14 rotatable about the axis of the pillar and carried by an arm 15 which, together with a graduated drum 16, rotates about an horizontal axis. The drum 16 and arm 15 are carried by an arm 17, which can rotate about an axis in line with the axis of the pillar 13 and is also carried on a block 21 mounted on a semicircular frame 3 so that the frame 3 can slide relatively to the block 21, the centre about which the semicircle is struck being the approximate centre of curvature of the lens. This frame 3 can swing about an axis 4, 5 in a semicircular frame 18, struck about the same centre, which can be rocked in a block 19 and clamped in any position. The standard ball 1 is carried in a three-point support by the frame 3. The axis 4, 5 passes through the centre of the ball and meets the axes about which the drums 16, 14 turn on a point which is the approximate centre of curvature of the lens. The plate 8 is mounted horizontally and is carried by a float 10 on a mercury surface the level of which may be adjusted by a screw-plunger 20. A screw 6 against which the frame 3 is swung by a counterweight serves to adjust the frame about the axis 4-5 to cause the rolling of the lens 2 and ball 1 over the under surface of the plate. The drums 14, 16 and the axis of the arm 17 serve to bring any point on the lens to contact with the plate. The Newton rings are counted during the rolling with the aid of one or more micrometer microscopes (not shown).
Patent GB-538710-A (GB)
Title: Improvements in or relating to means for marking lines or the like on roadways, courts and the like
IPC: E01C23/20
Filed: 1940-03-08
Abstract: 538,710. Line-markers for roads &c. OPENSHAW, K. March 8, 1940, No. 4482/41. Divided out of 538,687. [Class 132 (ii)] An apparatus for marking lines or roadways, courts &c. comprises a wheeled vehicle with a marking drum provided with one or more surface pads, brushes or the like for marking a continuous or broken line, an air-tight paint container, a compressed air cylinder for forcing paint under pressure to the marking drum and a hand-operated brush, for independent use on trees, walls, kerbs &c. connected to the paint container by a flexible hose. As shown, the vehicle carries an air-tight paint tank 33 connected by a pipe 34 to a cylinder 35 of compressed air provided with an adjustable outlet valve 36 and a pressure gauge. The paint is forced from the tank through a slitted sprayer head 31 controlled by a valve 32, and falls upon a rotating drum 26 from which it is transferred to a marking drum 24 contacting with the roadway. The two drums may be driven from the axles of the larger road wheels. The surface of the marking drum 24 may be in the form of a continuous pad or brush to mark a continuous line, or the pad or brush may be in two or more sections so as to mark a broken line. A handoperated brush 41 for use in marking kerbs, trees, walls &c. is connected to the paint tank by a flexible hose 40 through which the paint is supplied under pressure. A control cock 50 may be provided. The marking wheel 24 may be raised to an inoperative position by detaching the front-wheel bracket 44 and inserting packing material between the bracket and the framework. The laterally-extending guiding means described in Specification 538,687 may be fitted to the apparatus.
Patent GB-119812-A (GB)
Title: Improvements in or relating to Artificial Limbs.
Inventor: CATELLANI GASTONE DE CATELAN
IPC: A61F2/60
Filed: 1918-03-13
Abstract: 119,812. Catellani, G. de C. March 13, 1918. Limbs, artificial. - The operating-strap 8, 9 for the lower portion of a leg is passed round a roller 7 carried by the bifurcated lower part 6 of a curved bar 1 which is secured to the calf of the leg and pivoted at its upper end upon the knee pivot 3. A stop-rod 12 engages the bar to limit the forward movement of the leg. The foot is provided with a front cushioning-pad 16 of rubber and a rear cushioning-spring 15.
Patent GB-105243-A (GB)
Title: Improvements in or relating to Kinematographic Projection Apparatus.
Inventor: EVANS HENRY RIEGEL
IPC: G03B21/46
Filed: 1917-03-30
Abstract: 105,243. Evans, H. R. March 30, 1916, [Convention date]. Drawings to Specification. Electric-lamp casings; lantern doors. - The Specification as open to inspection under Sect. 91 (3) (a) describes a kinematograph projector in which the lamp-house forms a chamber to which air enters through holes in the upper part of the outer wall of a double-walled door, the air passing down between the walls and entering the lamphouse through holes in the lower part of the inner wall. The combustion products may escape through a flue leading from the lamp house through the wall of the operating chamber or building to the outer air, or, alternatively, may escape through an aperture in the front wall of the lamp-house, a damper being provided which closes either outlet. This subject-matter does not appear in the Specification as accepted.
Patent GB-288002-A (GB)
Title: An improved machine for embossing envelopes
IPC: B31F1/07
Filed: 1927-02-19
Abstract: 288,002. Briggs, W. E. Feb. 19, 1927. Sheet-registering devices.-In a machine for embossing the flaps of envelope blanks, by means of pressure members e, e<1>, Figs. 1 and 2, the blanks fed to the machine are registered on a table a by means of four fingers b, Fig. 5, which project through openings in and oscillate above and below the table a. The table a is in four sections which are connected to feet a<1>, a<2>, a<3> by screw-and-slot connections 1 - - 7 so as to be capable of adjustment in a direction parallel to the axis of the member e<1>, and the feet a<2>, a<3> are adjustably connected to elongated bases a<5>, a<6> so that the sections of the table a removed from the member e<1> can be adjusted in a, direction at right-angles to the first direction. Bearings are provided on the underside of the table a for spindles on which the fingers b are keyed, so that as the sections of the table are adjusted, the fingers are moved therewith. Levers c<1> operated by cams c on a main shaft dare connected to cranks c<4> on the finger-carrying spindles by links consisting of two parts c<2>, c<3> adjustably connected together by a bolt-and-slot device, and operate the fingers b so that the pair b<1>, b<2> engaged by the leading edge of the blank rise in advance of the other pair which push the blank against the first pair. The member e of the press is fixed, and the upper member c<1> is pivoted thereto, being provided with a roller on its extreme end engaging a cam g<2> on a shaft g<1> oscillated by link mechanism f<1>, f<2>, g from a cam f on the shaft d. Delivery apparatus. - After the embossing operation, the blank is delivered to a table by the engagement of a vertically-reciprocated roller h<1>, Fig. 2, with a driven roller h projecting through an opening in the table a. The roller h is driven from the shaft d by means of a chain i<2>, and the arm n<1> carrying the roller h<1> is slidably mounted on a part n of the framing. A cam i on the shaft d engages a roller on a link k which reciprocates the arm n<1> through an intermediate lever l and link m.
Patent GB-1024513-A (GB)
Title: Improvements in disc brakes controlled by a pair of levers, in particular for automobile vehicles
IPC: F16D65/097
Filed: 1964-02-04
Abstract: 1,024,513. Disc brakes. ANDRE CITROEN S.A. Feb. 4, 1964 [Feb. 5, 1963], No. 4696/64. Heading F2E. A disc brake has friction linings mounted on opposite sides of a disc and movable parallel to the disc axis by two application levers located on the opposite sides of the disc, each lining being carried by a plate slidably mounted on a post substantially parallel to the disc axis, means being provided on each of the levers to guide the corresponding plate to slide along the post but to prevent rotation there about, the mutual location of the guiding means being such that when the brake is applied the resultant force on each brake pad passes through the corresponding post. The linings 4 are riveted to backing plates 6 which engage posts 7 and slide there along. Notches 6a in the plates are engaged between surfaces on the edges of the levers 5a to maintain the plates in the position where the brake force F passes through the posts 7. The levers are actuated by cables against the action of a return spring 17. Screwed stops in a block 20 adjacent the spring are manually adjustable as the pads wear. The posts 7 are carried on the calliper of the main brake which may comprise a single hydraulic actuating cylinder or a pair of opposed cylinders.
Patent GB-314422-A (GB)
Title: Improvements in or relating to sound-producing apparatus
IPC: G10K9/12
Filed: 1929-02-12
Abstract: 314,422. Submarine Signal Co., (Assignees of Williams, R. L.). June 27, 1928, [Convention date]. Magnetic instruments.-In an electromagnetic fog horn or the like, the two diaphragms 1, 2 are rigidly connected at their peripheries to the field magnets 3, 4, and at their centres by the tie rod 11. The field magnets are maintained by the coil 5 whilst alternating current is suplied to the coil 17 wound on the steel core 16 which is rigidly fixed, relative to the field magnets, by the brass rings 15. A copper tube 10 is fitted in the air gap 18 and projections thereon pass through the rings 15 and engage the light cones 8, 9 which are in contact with the diaphragms. When current is supplied, the tube 10 moves to and fro in an axial direction moving the diaphragms. A horn 19 is fitted to each diaphragm, the horn comprising a resonating chamber 20 and a horn chamber 21 which are tuned to transmit the sound waves with maximum efficiency. One of the horns may be omitted or the two resonating chambers may be brought to a common horn in which latter case the connecting tubes vary in length by a half wave length of the sound waves produced.