baber/WOPTO huggingface dataset:
Patent GB-878730-A (GB)
Title: Improvements in or relating to the manufacture of particulate solid catalysts
IPC: B01J33/00
Filed: 1959-08-10
Abstract: Butylene is dehydrogenated to butadiene in the presence of a coated, particulate potassium-promoted catalyst, prepared by treating the catalyst particles with vapours of an organic compound capable of being polymerised to a solid polymer by the alkaline action of the potassium compound in the catalyst.  In Example IV, butylene was dehydrogenated to butadiene using an iron oxide/chromium oxide/potassium carbonate catalyst which had been treated with acrolein vapours and then steamed at 620 DEG C. to remove the polymer coating.ALSO:A coated, particulate potassium-promoted catalyst is prepared by treating the catalyst particles with vapours of an organic compound capable of being polymerized to a solid polymer by the alkaline action of the potassium compound in the catalyst. Specified monomers are acrolein. methacrolein, methyl vinyl ketone and propylene oxide.  Examples I and II describe the coating of an iron oxide/chromium oxide/potassium carbonate catalyst by treating with acrolein; Example III states that methacrolein and methyl vinyl ketone give similar results but that styrene, divinyl benzene and acrylonitrile were ineffective.  In Example IV, butylene was dehydrogenated to butadiene using an iron oxide/chromium oxide/potassium carbonate catalyst which had been treated with acrolein vapours and then steamed at 620 DEG C. to remove the polymer coating.
Patent GB-1162570-A (GB)
Title: Ball-Bearing Cage, more particularly for Large-Diameter Deep-Grooved Bearings
IPC: F16C33/38
Filed: 1967-06-13
Abstract: 1,162,570. Bearings. S.K.F. COMPAGNIE D'APPLICATIONS MECANIQUES. 13 June, 1967 [20 June, 1966], No. 27261/67. Heading F2A. A ball bearing cage comprises a plurality of elements 1, each element separating consecutive balls and pivotably engaging the adjacent element before being rigidly assembled. Each element has two parts 4 (Fig. 2) inserted from opposite sides of the bearing and having projections 6 fitting into holes in the other part. Arms 7, 9 of adjacent arms 9 have part-cylindrical end surfaces (Fig. 1) engaging part-cylindrical recessed surfaces in adjacent arms 7, the axes of the surfaces being parallel to the bearing axis and passing through the centre of the respective balls. The adjacent elements are thus pivotable before being rigidly secured by rings 3 extending through grooves 11 in the axially outer surfaces of the elements, portions of the grooves having edges overlapping the rings. Projection 6 has a groove forming a continuation of groove 11, the ring 3 thus also securing parts 4 together.
Patent GB-892455-A (GB)
Title: Improvements relating to insulating spacers
IPC: H01J19/44
Filed: 1959-08-10
Abstract: 892,455. Insulations. SYLVANIA ELEC. TRIC PRODUCTS Inc. Aug. 10, 1959 [Aug. 8, 1958], No. 27300/59. Drawings to Specification. Class 36. [Also in Group XL (a)] An insulating spacer, for an electrical device having an electrode containing a metal which sublimes upon the spacer during operation, is provided with an insulating coating having, dispersed in a binder, a constituent which reacts with the sublimed metal to form an insulating substance. This constituent may be chrome oxide; a zeolite such as calcium, sodium or potassium alumino silicates; a P-type semiconductor such as germanium having traces of aluminium, boron, gallium and/or indium; nickel oxide-lithium oxide or lanthanum hexaboride. The binder may comprise an aqueous solution of an alkaline silicate or aluminium nitrate, or a hydrolysed nitrate such as is described in U.S.A. Specification 2,179,453. Specific examples are given of preferred insulating coating suspensions which may be applied to a mica spacer by a spray operation and afterwards baked to drive off volatile matter.
Patent GB-462916-A (GB)
Title: Improvements in or relating to windows and like glazed structures
IPC: E06B1/24
Filed: 1935-10-03
Abstract: 462,916. Moulding window sashes. COUGH, W. F. Oct. 3, 1935, No. 27333. [Class 87 (ii)] [Also in Group X] A mould for a sash frame of concrete or like mouldable material comprises two halved frames 21, 25 for the upper and lower parts of the bar and an intermediate fillet 26 for the glass-holding groove 13, Fig. 4. The fillet 26 comprises cornerpieces and straight sections having bevelled meeting edges to facilitate removal.
Patent GB-1352806-A (GB)
Title: Disc brakes especially for automobiles
IPC: F16D65/097
Filed: 1972-06-12
Abstract: 1352806 Spot-type disc brake element mountings; preventing vibration AUTOMOBILES CITROEN SA 12 June 1972 [17 June 1971] 27389/72 Heading F2E In a disc brake especially for automobile vehicles comprising an axially-fixed disc 1, a fixed brake frame 2, a friction element 10, Fig. 3, at each side of the disc, each friction element including a support or plate 9 held by rigid and removable fixing means such as a single spindle 14 so that the plates can slide along guide surfaces 11, Fig. 1, of the frame 2, control means such as a piston 6, Fig. 2, for applying each element and a resilient anti-vibration component 12 preventing, by pressure, at least one plate 9 from vibrating, the resilient anti-vibration component 12 is arranged also to immobilize the spindle 14 relative to the frame and to prevent it from moving in a direction perpendicular to the direction in which the component exerts pressure on it. As shown, the anti-vibration component 12 (not depicted complete in any Figure) consists of a generally U-shaped piece of spring steel wire of which the middle portion 12a, Fig. 3, presses down upon the plates 9 of the two friction elements 10, the limbs 12b, Fig. 1, are kinked at 12c to exert upward pressure via grooves 17 on spindle 14, and the ends 12d are turned inwards and supported directly by frame 2 or, as shown, each presses down upon an auxiliary friction element consisting of lining 19 and plate 20. At each end, the spindle 14 passes through a hole 16 in a plate 9 and is supported in a hole 15a or 15b in the frame. To remove an element, spring limbs 12c are disengaged from grooves 17, pin 14 is slid until free of hole 16 in the appropriate element, and the element is withdrawn radially through opening 13 of the casing 2, Fig. 3. Each auxiliary element 19, 20, is accommodated in a housing 21 and applied by a lever 18. Modifications: there may be more than one spindle; the disc need not be axially fixed and only one element need be slid relative to the frame by the control means (which may be pneumatic or mechanical); the resilient component may be strip, and one may be provided for each friction element.
Patent GB-429082-A (GB)
Title: Improvements in electric resistances and the manufacture thereof
IPC: H01C10/00
Filed: 1934-09-24
Abstract: 429,082. Resistance coatings and deposits; variable resistances. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Sept. 24, 1934, No. 27404. Convention date, Nov. 4, 1933. [Class 37] Resistance layers for variable resistances are made by coating an insulating member 1 with a dispersion comprising a hardening resin and a conducting material followed by heating after removal of the dispersion medium to harden the resin, whereupon the surface 2 is smoothly ground. The grinding operation may be followed by reheating to increase the hardness of the resistance layer. Shellac or phenol-formaldehyde condensation products are specified as hardening resins, while the conducting material is preferably carbon in the form of graphite, although other materials, such as silver oxide, may be used. The insulating member 2 may be made of a fibrous material, such as paper, impregnated with a hardening resin. The movable contact 7, which may be of spherical shape, is mounted on a flexible arm secured to an insulating disc 8 rotatable by means of a knob 10. Reference has been directed by the Comptroller to Specification 409,740.
Patent GB-769716-A (GB)
Title: Ratiometer
IPC: G01L15/00
Filed: 1954-09-22
Abstract: 769,716. Measuring pressure ratios. BENDIX AVIATION CORPORATION. Sept. 22, 1954 [Oct. 15, 1953], No. 27408/54. Class 106 (2). [Also in Group XXIX] A servo-piston 36 is positioned as a function of a ratio of pressures and may be connected at 44 to a valve, cam, lever, spring mechanism, &c., to be controlled as a function of the pressure ratio. In the embodiment described, the two pressures are the inlet and discharge pressures of the compressor 13 of a gas turbine engine. A conduit 20 interconnects the two points from which these pressures are tapped and incorporates a fixed restriction 30 and a restriction 32 whose effective area is controlled by a valve closure member 34 actuated by the servo-piston 36. A control valve 46 for the servo-piston is operated by a lever 76 pivotally mounted at 78 and operable by the movable ends of bellows 56, 58, 60, 62. The bellows 58. is subjected internally to the pressure between the restrictions 30, 32 and the bellows 60 is subjected internally to the pressure downstream of the restriction 32. The other two bellows 56, 62 are evacuated and compensate for variations of atmospheric pressure. The servo-piston 36 and valve 34 thus control the orifice 32 to maintain a constant pressure ratio across that orifice whereby the ratio of the areas of the orifices 30, 32 is a function of the required pressure ratio. By varying the contour of the valve member 34, the function of pressure ratio which the displacement of the servo-piston represents may be varied; The valve member 34 may alternatively control the orifice 30 or one of a group of restrictions parallel to the; orifice 30 or 32. Specification 745,146, [Group XXIX], is referred to.
Patent GB-1530047-A (GB)
Title: Developing
IPC: G03G15/10
Filed: 1977-06-30
Abstract: 1530047 Electrophotographic development KONISHIROKU PHOTO INDUSTRY CO Ltd 30 June 1977 [10 July 1976] 27508/77 Heading B2L Apparatus for developing latent images borne on the surface of a medium P comprises leading and trailing squeeze rollers 2 in horizontally spaced relation, means 5 disposed between the squeeze rollers and spaced a short distance from medium P for selectively applying one or more liquid developers and a rinse liquid thereto, and means 15 disposed at the rear of the trailing squeeze roller for neutralizing or dissipating residual charge remaining after development. As shown, in colour reproduction, light from illuminated image N passes through red, green, blue and neutral filters f 1  to f 4  in turn to fall upon surface S, pre-charged by S 1 . Surface S is caused to overlie surface P, which is charged image-wise by passing charging means S 2  over both surfaces. Appropriate developer (yellow, magenta, cyan) is fed to chamber 6, which, together with the whole apparatus D, traverses surface P right-to-left, so that the image is developed and residual charge removed by means 15. Chamber 6 has an apertured plate therein to assist uniform liquid flow, and a developing electrode adjacent surface P; excess developer is caught in tray 17 and returned to an appropriate tank by means 20. For the return journey left-to-right, developer supply is shut off, and rinse liquid supplied instead. The procedure is repeated for each colour as necessary. In another embodiment, there are 3 rollers and two intermediate chambers 6 with a device 15 at each end, so that one single pass both develops and rinses; in a third embodiment, the rollers and chambers 6 pass underneath surface P.
Patent GB-1007960-A (GB)
Title: Receiving equipment for vf-keyed code signals in telecommunication, particularly telephone systems
IPC: H04Q1/46
Filed: 1963-07-12
Abstract: 1,007,960. Voice immunity circuits; automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. July 12, 1963 [July 17, 1962], No. 27707/63. Headings H4K and H4R. In a receiving equipment for voice frequency keyed code signals in a telecommunications system the code receivers are permanently connected to the line while voice immunity circuits are connected to the receivers only for a short time interval after detection of a signalling frequency, and during this time interval the outgoing line and the receiver selection tone generator are disconnected from the code receivers. In the embodiment, Fig. 2, voice frequency signals on the line a, b are fed over the transformer to code receiver CE, the output from which is fed to a codechecking device CK which, on detection of a genuine code, passes the signal to the registers, not shown, and actuates a relay which, over contacts t3, connects the voice immunity circuits SpK to the receiver CE, and, over contacts t1 and t2, disconnects the outgoing line al, b1 and the local tone generator WG from the receiver circuits for a time governed by the timing device T. Fig. 2 also shows how the code signal regenerated by the register is fed to the line a1, b1, from a source TS over changeover contact S in order to prevent the signals having any influence on the receiver CE.
Patent GB-231547-A (GB)
Title: Improvements in augers or bits
IPC: B27G15/00
Filed: 1923-11-05
Abstract: 231,547. Armstrong, J. J. V., (Mc- Curdy, H. M.). Nov. 5, 1923. Augers.-An auger comprises a stem furnished with two spirals of equal width, one spirad being cut away and backed off at the end to form a floor lip-cutting edge 9 substantially perpendicular to the axis of the tool, while the end of the other spiral is sharpened to produce a curved scoring cutter 13, the web of the latter spiral between the scoring cutter and the smooth removable centre point 7 being cut away to a level 12 belov that of the floor lip cutter. The floor lip cutter 9 extends inwards beyond the centre of the auger to form a frustro-conical projection round the centre pin 7. The outer surface of the cutter 9 nearer to the work is backed off from the cutting edge at an angle which preferably is 10, while the inner surface 10 is preferably formed at an angle of approximately 57. The edge 13 projects towards the work about 1/32 of an inch beyond the cutting edge of the cutter 9. The centre pin has a wedge-shaped end which makes a driving fit in the conical end 8 of an axial hole in the auger and is removed by forcing a drift pin through the lateral hole 6.
Patent GB-801699-A (GB)
Title: Improvements in and relating to inductive devices
IPC: H01F38/10
Filed: 1956-09-12
Abstract: 801,699. Transformers and inductors. GENERAL ELECTRIC CO. Sept. 12, 1956 [Sept. 12, 1955], No. 27921/56. Class 38 (2). A magnetic core for an inductive device comprises a central cylindrical member 2 formed from iron wires, annular end portions 3, 4 formed from washer-shaped laminations and a surroundng portion 8 joining the end portions and formed from axially-extending radially-disposed laminations. The crosssection of the portion 8 is an incomplete annulus and a easing 10 retains the laminations by lugs 11, 12. A channel-shaped base member 15 slides over further lugs 13 to enclose leads 18, 19 and the exposed parts of coils 6, 7.
Patent GB-989722-A (GB)
Title: Improvements in or relating to acidic polyester polyepoxide compositions
Inventor: LEWIS REGINALD NORMAN
IPC: C08L67/00
Filed: 1960-08-12
Abstract: Hardening agents for polyepoxides are acidic polyesters containing more than two carboxyl groups per average molecule formed by the reaction of a polyhydric alcohol containing at least three hydroxyl groups with a dicarboxylic acid made by reacting a glycol with an excess of glutaric acid or a mixture of saturated dicarboxylic acids containing a major proportion of glutaric acid.  The polyesters may be used to harden polyepoxides containing internal or terminal epoxide groups and may be used in conjunction with the anhydride of a polycarboxylic acid.  In comparative examples epoxy resins are hardened with an acidic glyceryl glutarate.
Patent GB-724762-A (GB)
Title: Vehicle windows
Inventor: FOWLER PETER MAXWELL
IPC: B60J10/04
Filed: 1952-11-06
Abstract: 724,762. Vehicle windows. WILMOTBREEDEN, Ltd. Dec. 1, 1953 [Nov. 6, 1952], No. 27952/52. Class 20 (3).  In a vehicle window wherein at least one pane i slides horizontally past another pane a, guides b for the slidable pane and slides j on the slidable pane have interacting grooves and flanges e, k, f, m, forming water-tight seals, and spring-supported rollers b, balls or skids are provided between the guides and slides.
Patent GB-783739-A (GB)
Title: Detachable support for electrical components
IPC: H05K7/06
Filed: 1955-10-03
Abstract: 783,739. Supports for circuit components; plug-boards; holders for thermionic valves. NATIONAL CASH REGISTER CO. Oct. 3, 1955 [Oct. 4, 1954], No. 28073/55. Class 38 (1). A detachable unit intended to carry components such as condensers, resistances, and valves, for a computer, comprises a channel-section base 11 to which are riveted insulating strips 13 supporting lugs 33 adapted to provide connectors for the components at one end and inwardly-bent contacts 35 at the other end. The base 11 also supports a pair of plug members 17, 21 at its ends, those 21 being differently spaced from those 17 to ensure correct coupling of the unit with corresponding sockets 17<SP>1</SP>, 21<SP>1</SP> on the cooperating coupling part 31, Fig. 7. A plate 41 supporting valve sockets 59 is spaced from the element 11 by spacers 43 bored and threaded at each end to receive securing studs, the upper studs 51<SP>1</SP> being extended to provide handles. The spacers are grooved at 61 to support a series of flexible insulating plates 63, the edges of which are nicked to support the leads of the components. The part 31 comprises frame members 111, 113 screwed together and supporting insulating boards 103 each comprising a pile of thin strips glued together and carrying lugs the ends of which on the one side of the board are turned over at 107 to form companion contacts to those 35 of the plug-in unit. When the two parts are coupled together, a pair of locking screws 121 having clearance with the plates 41 and 63 are rotated so that their threaded ends 123 engage threaded holes 125 in members 115, whereby a flange 127 on each screw bears on the base 11 to urge the contacts 35 tightly against contacts 107. The boards 103 are adapted to receive units of only half the length of that shown (Fig. 3, not shown).
Patent GB-246947-A (GB)
Title: Improved construction of braking appliances
IPC: F16D49/00
Filed: 1924-11-24
Abstract: 246,947. Knight, J. S. Nov. 24, 1924. Blocks acting on drums; disc locking by frictional detents.-The longitudinal thrust imparted to a helically cut toothed wheel, mounted on a longitudinally movable shaft carrying a rigidly attached braking disc, by a helically cut toothed wheel mounted on a shaft to be braked is utilized to effect the braking. The invention is particularly adapted to brake a shaft driven against a load, whereby the load is sustained when the power is cut off. As shown in Fig. 1, the shaft 1 to be braked carries a wheel 2 with helical teeth meshing with a helically cut gear wheel 3 mounted on a vertical shaft 4 carrying a braking disc 7 adapted to co-operate with a fixed disc 6. One end of the shaft 4 is mounted in a fixed sleeve 5, and the other end, which is reduced in diameter, rests on a thrust block 8 having a screwed portion 8a, whereby the block may be raised or lowered by rocking a lever 9. When the shaft 1 runs in a clockwise direction, the lower end of the sleeve 5 acts as a fixed thrust bearing for the shaft 4, and the disc 7 is held clear of the disc 6 by the reaction between the wheels 2, 3. If, however, the direction of rotation is reversed, the shaft 4 tends to move downwards, and if the lever 9 be actuated to lower the block 8, the discs 6, 7 are brought into engagement and the shafts 4 and 1 braked. The brake is released by raising the block 8. In a modification, shown in Fig. 6, the fixed disc is replaced by a loose disc 17 connected by a rod 18 to a brake block 19 co-operating with a drum 21 on the shaft 1, so that the block is applied to the drum when the discs 7, 17 engage. As shown in this Figure, the thrust block 8 may be replaced by a hand-operated cam device. In the form shown in Fig. 7, the shaft 4 carries a pair of discs 7, 7a and is carried in bearings in a pair of co-operating fixed discs 6, 6a. The reduced ends of the shaft bear against thrust bleeks 8, 8a having chamfered portions 23, 24 respectively, which are adapted for simultaneous operation by a lever 25. When the shaft 1 turns in a clockwise direction, the shaft 4 tends to move to the left and if the blocks 8, 8a are lowered by the lever 25 to permit this movement, the resulting engagement of the discs 6, 7 will brake the shaft 1, which, however, will be free to run in an anticlockwise direction. Similarly, when the blocks 8, 8a are raised from the position shown, the shaft is free to run in a clockwise direction, but is prevented from running in an anticlockwise direction by the engagement of the discs 6a, 7a. If, in the construction shown in Fig. 1, the discs 6, 17 take the form shown in Fig. 7, the recess in the disc 6 may be filled with oil or other fluid to delay or cushion the braking action. Specifications 21167/13, 172,449 and 195,331, [all in Class 78 (v), Winding and paying-out apparatus &c.], are referred to.
Patent GB-279509-A (GB)
Title: Improvements in or relating to weighing scales
IPC: G01G3/02
Filed: 1927-02-15
Abstract: 279,509. Dayton Scale Co., (Assignees of Bryce, J, W.). June 16, 1926, [Convention date]. Printed and perforated records, apparatus for giving.-A weighing-scale comprises parts displaced in accordance with weight and a perforating device controlled by the parts for giving a perforated weight record, the perforating device including a number of punches to represent different amounts and having provision for selecting certain of the punches for conjoint punching operations to form the perforated record, each perforation by its location on the record determining and defining a digital value of a multi-denominational weight amount. In the weighing scale shown in the Figure, the load on the scale pan 10, or on a platform lever system, tilts a scale beam 11 and this is restored substantially to equilibrium position by motors R, S which respectively deposit loose weights 19 upon the beam and extend a spring 18 attached to the beam, the final adjustment to exact equilibrium (as indicated by a pointer 46) being made by a hand wheel 35. The weight of the load is indicated by discs 26, 42 corresponding respectively to the loose weights 19 and to the spring 18 and driven by gearing from the motors R, S. The indications are viewed through apertures in a masking plate 45 carried by the beam. The weight-indicating discs 26, 42 are geared to corresponding printing discs 48, 49 and to pin cylinders 58, 59. Below the pin cylinders is a number of punches 55 capable of independent upward movement. According to the setting of the pin cylinders, the upward movement of certain of the punches is obstructed by the pins or by interposed levers, and the selected punches may be caused to perforate a card 61 when this is raised by the depression of a handle 63. The same movement of the handle produces a printed record from the type dscs 48, 49 by means of the usual platen mechanism 66. Unless the beam 11 is in equilibrium, a notched member 70 connected to the handle 63 fouls the beam if an attempt is made to operate the handle, and consequently the printed and perforated records cannot be obtained. Specification 272,853 is referred to.