baber/WOPTO huggingface dataset:
Patent GB-520119-A (GB)
Title: Improvements in or relating to voltage regulators employing on-load tap-changing switch gear
IPC: H01F29/04
Filed: 1938-10-28
Abstract: 520,119. Transformers. FERRANTI, Ltd., and PORTER, G. L. Oct. 28, 1938, No. 31168. [Class 38 (ii)] The tapped winding W is connected between leads A, B by cam-actuated reversing switches P1, P2 and tapping switches T1 ... T5. The sequence of operation from maximum in one direction with switches P1, T1 closed is to proceed as usual as far as closing T4, then instead of closing T5 a switch Z is closed whereupon T4, P1 are opened and T2, P2 closed, thereafter Z is 'opened and the sequence proceeds as usual until only T5, P2 are closed. The location of the switch Z at one end of the reactor R enables the sequence to proceed through zero boost in one step.
Patent GB-197975-A (GB)
Title: Improvements in or relating to hand rubbing boards for washing purposes
IPC: D06F1/00
Filed: 1921-11-22
Abstract: 197,975. Plantation Rubber Manufacturing Co., Ltd., and Dessau, M. M. Nov. 22, 1921. Washing-boards. - A thin flexible sheet of rough-surfaced rubber such as crepe or smoked sheet rubber, is used as a surface for washing boards and is secured at the edges and elsewhere if necessary but not uniformly all over. The rubber may be cold vulcanized. In Fig. 1 a sheet a of such rubber is stretched over a rubbing board e by securing its ends to the opposite edges of one end b of the board, the bight so formed at the other end of the board passing over a roller d; the rubber being kept taut by means of bolts h and thumb nuts i. In a modification the rubber may be first cured and then fixed to a board e, Fig. 4, by skips j along the edges of the rubber sheet; these strips may be rubber covered. Alternatively, Fig. 5, holes k in the edges of the board are filled with rubber plugs, which may project slightly above the board at each end and to which the rubber sheet is attached. The rubber sheet may be rolled into cord form and may be used to lace the covering sheet to the board as shown in Fig. 7.
Patent GB-1474523-A (GB)
IPC: F16B2/22
Filed: 1973-06-30
Abstract: 1474523 Fastening devices FIRTH CLEVELAND FASTENINGS Ltd 17 June 1974 [30 June 1973] 31264/73 Heading E2B  A fastening device comprises a member preferably made from a blank (Fig. 1, not shown), having at least one outwardly extending projection and a plurality of arms 24 for extending about an object, e.g. a boss, to be gripped and an annular constraining member 12 which is, in use, forced about the member to contract the member (10) onto the object, the projection(s) biting into the constraining member. As shown the arm has inwardly extending pointed members 32. Alternatively the inner surfaces of the arms may be roughened or provided with pointed projections or barbs. In a further embodiment the ends of the arms may be bent inwardly and be provided with serrations on the free end of each arm may be provided with inwardly directed serrations. The central portion of the member has an aperture for receiving a screw (Figs. 1, 3, not shown).
Patent GB-844609-A (GB)
Title: Improvements in or relating to the amplification of colour signals
Inventor: JAQUES ANTHONY FRANCIS
IPC: H04N9/68
Filed: 1955-11-02
Abstract: 844,609. Television. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 1, 1956 [Nov. 21, 1955], No. 31285/55. Class 40(3). A colour signal amplifier is arranged to operate with a higher gain and smaller band-width during the occurrence of synchronizing signals compared with its gain and bandwidth in the intervals between synchronizing signals. This arrangement gives an improved signal-to-surge ratio during the reception of the synchronizing signals, particularly of the "burst" component in systems of the NTSC type. As shown the amplifier comprises a first stage 6 and a second stage consisting of a beam deflection valve 1 the beam of which is deflected on to anode 9 during the intervals between synchronizing signals and on to anode 12 during the occurrence of such signals. In the former condition resistors 10, 11 and 17 provide a negative feed-back path and additionally, together with inductors 25, 29 and 37 and resistor 36 provide a wide-band flat-topped characteristic for the amplification of colour signals which are supplied to the colour demodulators via transformer windings 27, 28. During the occurrence of synchronizing signals, when the beam of valve 1 is deflected on to anode 12, the negative feed-back path is broken so that the amplifier gain is increased and the bandwidth reduced and the synchronizing signals are then derived from terminal 16 for application to conventional utilization circuits. The beamdeflection valve may be replaced by two pentode valves which are controlled at their suppressor electrodes to produce a similar effect, or a single pentode valve having current division between its anode and screen due to suppressor control may be employed. In an alternative arrangement the valve 1 is replaced by a valve having a single anode which is connected in similar manner to anode 9 and a further (triode) valve the cathode of which is fed from the single anode and the anode of which is connected via a high resistance to positive potential relatively to the equivalent anode 9 has its grid pulsed positively during the occurrence of synchronizing signals so that its low impedance across the tuned circuit 25, 38 renders the feed-back loop inoperative. The synchronizing signals are then derived from the anode circuit. During the intervals between synchronizing signals the valve is biased off and the circuit operates as described above when the beam of valve 1 is on anode 9.
Patent GB-1080477-A (GB)
Title: Process for producing 2,2,6,6-tetramethyl-2,6-disila-1,4-dioxan
Inventor: SIMMLER WALTER
IPC: C07F7/08
Filed: 1966-07-12
Abstract: 2,2,6,6 - Tetra - methyl - 2,6 - disila - 1,4-dioxan <FORM:1080477/C3/1> is prepared by heating 1,3-di-(hydroxymethyl) tetramethyl disiloxane in the presence of p-toluene sulphonic acid as catalyst in a column distillation apparatus to a temperature in the range 100 DEG  to 150 DEG  C. at atmospheric pressure until about 0.8 mol water per mol of disiloxane has distilled over together with part of the product, adding to the reaction mixture a further catalytic amount of p-toluene sulphonic acid and then heating the mixture under reduced pressure at 120 DEG  to 180 DEG  C. to distil over the remainder of the product.  The 1,3-di-(hydroxymethyl)-tetramethyl disiloxane is obtained by transesterification of a 1,3-di-(acyloxymethyl)-tetramethyl disiloxane, a dimethyl-(acyloxymethyl)-acyloxysilane or a dimethyl-(acyloxymethyl)-alkoxy silane with excess methanol in the presence of p-toluene sulphonic acid and the process can be effected using this transesterification product in the raw state directly.
Patent GB-159369-A (GB)
Title: Improvements in or relating to receipt, statement and reminder slips or forms and the like adapted to be affixed to accounts, letters and the like
IPC: B42D15/00
Filed: 1919-12-13
Abstract: 159,369. Greig, A. C. Dec. 13, 1919. Affixing by adhesives. -Receipt, statement or reminder slips 1 are attached to an account &c. by means of an adhesive stamp which is secured to the account &c. through a hole in the slip. The hole may be replaced by a notch in the side of the slip, or two holes or notches may be provided.
Patent GB-762496-A (GB)
Title: Vehicle wheels having multi-compartment tires
IPC: B60C5/20
Filed: 1953-11-12
Abstract: 762,496. Wheel tyres. McLEOD, N. W. Nov. 12, 1953 [Nov. 13, 1952], No. 31344/53. Class 144 (2). A wheel and tyre assembly arranged to provide a load pressure distribution over its road contact area which at normal load and deflection on a flat unyielding surface gives a greater load pressure at the centre than at the edges of the contact area, and thereby mitigates against failure of the road or foundation layers, comprises a central and outer compartments (nested or side-by-side) of different compressibilities, the central compartment being less compressible than the outer compartments. Fig. 4A shows three nested separately-inflatable annular compartments 10, 11, 12 mounted on a single rim 16 and inflated at 400, 200 and 100 lbs. per sq. inch respectively. Fig. 4B shows the road contact deformation under load; to reduce wear from slippage between the contacting surfaces of the chambers, graphite or like lubricant may be provided therebetween. Alternatively the peripheries of the chambers may be integrated at the crown region of the tyre. Fig. 6A shows a solid rubber tyre formed of a hard core 24 enclosed within layers 25, 26 of successively softer rubber. The core 24 or the soft rubber sheaths 25, 26 may, in alternative arrangements, be replaced by a high or low pressure inflatable chamber respectively. In a further arrangement, a series of separately mounted annular air tubes may be arranged side-by-side, the central tube being at higher inflation pressure than the tubes on each side thereof, intermediate tubes being, if desired, at the lowest inflation pressure. Fig. 9 shows a high-pressure inflatable tube 38 mounted on a rim 39 which is rotatably mounted, by means of bearings 41, for slippage on a rim 40 which supports an enclosing low-pressure tube 45. Air enters the inner tube 38 from the outer tube 45 through a non-return flap-valve 43 so that, in operation, the outer tube, and thus the inner tube, is first inflated through a valve 46 to high pressure, after which the pressure in the outer tube is reduced to the desired amount. Fig. 13 shows an alternative arrangement for inflating the high pressure inner tube, wherein two slit-rubber nippled spring-ball check valves 72, 79 in outer and inner rims 70 and 67, respectively, can be aligned on rotation of the inner rim to allow insertion of a hollow inflating needle. The inner rim may have a number of such valves 79 circumferentially spaced and a further similar valve may be provided in the outer rim 70 to provide for insertion and manipulation of a pry effecting rotation of the inner rim. A releasable spring-urged ballended latch-pin may be provided on the outer rim to extend therethrough and engage one of a number of suitably-spaced detents on the inner rim to hold the two rims with the valves 72, 79 aligned. Specifications 243,890 and 291,503, [both in Class 144 (ii)], are referred to.
Patent GB-1553002-A (GB)
Title: Process for the telomerisation of dienes
IPC: C07C69/145
Filed: 1977-07-26
Abstract: A process for the telomerization of dienes with a telomerizing compound containing a mobile hydrogen atom is disclosed wherein the reaction between the diene and the telomerizing agent is effected in the presence of a catalytic system comprising a water-soluble sulfonated triaryl phosphine compound, preferably a water-soluble salt of a mono-, di-, or trisulfonated triphenyl phosphine and a transition metal compound, preferably palladium or a palladium-containing compound. Water is added either before or after the reaction is completed and the reaction products can easily be separated from the aqueous catalyst solution.
Patent GB-252301-A (GB)
Title: Improvements in shaft-couplings
IPC: F16D15/00
Filed: 1925-12-15
Abstract: 252,301. Magnusson, J. I. Dec. 14, 1925. Claw clutches. - In a clutch comprising two members 6, 12 which are connected and disconnected by moving them to and from each other, the member 6 being provided with recesses 7a adapted to engage with balls or rollers 8 carried bv the member 12, the recesses 7<a> consist of deepened and widened portions of an annular race 7, which portigns merge into the shallower and narrower portions of the race. The member 6 is splined on the rim 2b of a disc 2 keyed to the driving shaft 1 and the member 12 is splined in a divided housing 13, 14 surrounding the disc 2 and the member 12 and keyed to the driven shaft. The balls 8 are mounted in holes 9 in a ring 10 secured to the member 12. The holes 9 are tapered in order to retain the balls and prevent axial movement thereof. The balls are normally held in the recesses 7a by a spring 23 acting on the flange 25 of a sleeve 24, which flange 25 acts on the ends of levers 18 pivoted at 19 to the housing 14, the levers having pins 20 bearing on headless screws 21 threaded in the ring 12. The clutch is disconnected by a lever engaging a grooved ring 27 fixed to the flange 25. The housing 13, 14 may serve as a brake pulley.
Patent GB-899565-A (GB)
Title: Method of forming a reconstituted tobacco product of increased wet strength
IPC: A24B15/12
Filed: 1960-09-14
Abstract: 899,565. Reconstituted tobacco products. MORRIS Inc. PHILIP. Sept. 14, 1960 [Sept. 14, 1959], No. 31634/60. Class 130. [Also in Group VIII] A slurry of tobacco, e.g. of stem parts and/or " fines," is delivered from a spreader 11 as a film 12 on a stainless steel conveyer band 10 and is passed through a hot air dryer 13 operating at a temperature between 110‹ C. and 160‹ C., whereby a dense and slow-burning film of high wet strength and decreased nicotine and sugar content suitable for cigar wrappers is obtained. Re-moistening of the dried film to 20 to 40% by weight moisture content is effected by sprays 18 prior to stripping it from the band 10 by a blade 19, drying it to 12 to 15% moisture content in an oven 22 and forming it into a reel 23. An aqueous slurry may be employed incorporating 3 to 10% by weight of tobacco, a substantial proportion of which has been reduced to a gelatinous state and a substantial proportion, e.g. one-third to one half, of which remains as fibres, the slurry including stems which have been cooked and beaten or refined and leaf fragments which have been ground sufficiently to pass a screen having 80 openings per linear inch. Further grinding or beating of the slurry may be effected prior to film-forming. The slurry may contain glycerine and non- volatile flavourings. Initial film-forming on a Fourdrinier screen may be used.
Patent GB-173667-A (GB)
Title: Improvements in chain making and welding machines
IPC: B21L3/02
Filed: 1920-11-10
Abstract: 173,667. Robinson, S. Nov. 10, 1920. Making and welding chains; bendii?g-dies.-Relates to chains and consists in a machine for bending and welding the ends of a hot U-shaped blank to form a link. The blank 48 is placed in position on a thrust-block 40 held in an adjusted position in a frame by set screws 9, the end of the blank projecting beyond an anvil 41, Figs. 4 and 5, having a recess 42. Bv means of a treadle and a pitman 38 the right-hand rod 26, Fig. 2, is drawn down, against the pull of a. weight 27, into engagement with a continuouslyrotating cam 35, and there held during one revolution of the cam. A slide 15 carrying a die 43, Figs. 4 and 7, is thus moved inwards to bend one leg of the link round the anvil and by means of the ribs 44, to groove the said leg. By similar means the slide 14 is moved inwards, and by means of a die 45, Fig. 8, bends the other leg of the link over the previously-bent one, the metal being pressed into the grooves formed by the die 43. By similar means the slide 16, Figs. 1 and 4, carrying the finishing die 46, grooved at 47, is pressed on to the end of the link to complete the weld and finish the link. When each treadle is released, the corresponding rod 26 is raised and drawn backwards clear of the work by its weight 27.
Patent GB-208567-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H47/14
Filed: 1923-12-18
Abstract: 208,567. British Thomson-Houston Co., Ltd., (Assignees of Carichoff, E. R.). Dec. 18, 1922,. [Convention date]. Void [Published under Sect. 91 of the Act]. Electromagnetic switches for use as electric motorstarting contactors, or other purposes are constructed so that each switch or contactor is composed of two electromagnets 10, 11 with mutually independent fluxes, mounted upon a common base 23 and acting oppositely upon a common pivoted member 13. When a group of such contactors is used for cutting out resistance in starting a motor, all the windings of the magnet 11 are connected in series with one another across the supply 22, and those of the magnets 10 are connected in series with one another across the motor armature A, in order that the contactors may respond to rising counter electromotive force at values differing by approximately constant amounts from the supply voltage, irrespective of fluctuations affecting the whole group, and of temperature changes of individual contactors.
Patent GB-670256-A (GB)
Title: Improvements in or relating to electrical discharge lamp structures
IPC: H01J61/34
Filed: 1948-12-08
Abstract: 670,256. Discharge lamps. KREFFT, H. E. Dec. 8, 1948 [Dec. 8, 1947], No. 31799/48. Class 39 (i). A high candle-power discharge lamp structure comprises a high-pressure gaseous discharge lamp 1 and auxiliary envelope 4, 5 formed of two strong glass shells secured together at their rims 12, one shell 4 being shaped as a reflector and the other 5 being translucent, the shells forming a protective shield in the event of the lamp exploding. A reflecting surface 4a is formed on the shell 4 by evaporating a reflecting metal, e.g. aluminium, or by precipitating magnesium oxide thereon, and the shell 5 may be strengthened by a wire mesh 14 embedded therein and have a luminescent screen 15. The space between the shells may be evacuated through an exhaust tube 13 or it may be filled with inert gas at low pressure. In a modification preferably for car head lamps, Fig. 3, the discharge lamp 1 has three symmetricallyarranged electrodes 23, Fig. 2 (not shown), so as to produce three arcs, two of which give parallel beams and the third a beam directed towards a surface, e.g. a road. A mirror 26 is provided on the translucent shell to screen off undesirable emission. In another modification for high operating voltages, Fig. 4, the shell 4 is formed as a paraboloid reflector with insulated conductors 40, 41 leading over its surface from the lamp to contact pins 36 on clips 32, 34 securing the shell-rims together. In this case, the lamp 1 has an auxiliary electrode 31 and may carry a reflector 44. The shell 5 may contain oxides of nickel, cobalt or copper and the lamp 1 preferably operates at 20 atmospheres. Specification 601,281 is referred to.
Patent GB-838822-A (GB)
Title: Improvements in or relating to the preparation of titanium tetrachloride
IPC: C01G23/02
Filed: 1956-10-19
Abstract: Titanium tetrachloride is obtained by the thermal decomposition of an alkali-metal or ammonium chlorotitanate, in which the free and combined oxygen content of the chlorotitanate is first reduced to a maximum of 1% by weight calculated as water by passing a stream of dry hydrogen chloride gas over the chlorotitanate, preferably at 70-300 DEG  C.  The chlorotitanate may initially be partially dried by washing with a non-aqueous liquid containing hydrogen chloride, preferably acetone or ethyl acetate.  The chlorotitanate may be decomposed in an inert atmosphere by heating, preferably to 150 DEG to 550 DEG  C.  The chlorotitanates may be obtained by preparing a solution of titanium in hydrochloric acid, cooling to 0 DEG  to - 20 DEG  C., saturating with hydrogen chloride, and adding the appropriate quantity of alkali-metal or ammonium chloride.  The precipitate may be washed with cold concentrate hydrochloric acid, or may be purified by dissolving in a fairly dilute hydrochloric acid solution and reprecipitating by saturating with hydrogen chloride at - 20 DEG  C.
Patent GB-1415030-A (GB)
Title: Body support garment
IPC: A41B9/02
Filed: 1973-07-04
Abstract: 1415030 Body support garment MAGIC MOLD Inc 4 July 1973 [5 July 1972] 31938/ 73 Heading A3V A body support garment comprises a continuous first portion 10c adapted to encircle the body of a wearer and a second portion 10d extending from the first portion to one end of the garment, the second portion being split to form flaps 10e, 10f which may be attached together in overlapping relationship throughout substantially the whole length of the triangular overlapping portions and at various mutual angles of overlap. The ladies support garment shown in Fig. 1 comprises a rear panel 11 and left and right front panels 12b, 12a of elastic support material. The adjustable flaps 10e, 10f accommodate fluctuations in the waistline. Securing means for the flaps comprise a pivotal snap fastener 30 adjacent the apex of the triangular region of overlap and complementary strips of filamentary hook and loop fastening material on the respective flaps. Additionally provision is made for adjustment of girth at the thighs by means of thigh supports 50a, 50b arranged to extend across splits in the thigh portions of the garment and to be secured adjustably by means of filamentary hook and loop strip fasteners. Fig. 8 shows a pair of men's briefs which lack the thigh adjustment and which are formed additionally with a stretchable genital panel 130 having a free upper edge,
Patent GB-446186-A (GB)
Title: Improvements in and relating to endless track vehicles
IPC: B62D11/22
Filed: 1934-11-07
Abstract: 446,186. Endless - track vehicles. LITTLE, L. F., Cornerways, Weir Road, Chertsey, Surrey. Nov. 7, 1934, No. 31987. [Classes 79 (i) and 79 (v)] [See also Group XXXII] An endless-track vehicle wherein the supporting track wheels or rollers on each side are steerable so as to cause the tracks to be laid in or adjusted to a curved path for steering, has the said wheels mounted on axles or supports articulated both longitudinally and laterally to impart stability to the vehicle. In the construction shown, the wheels 5 are mounted in pairs on the ends of balance beams 7 pivoted about horizontal axes 8 on supports 9 which can swivel for steering about vertical pivots 10. Steering is effected by a steering wheel 20 or a pedal through a link 21, bell-cranks 24 coupled together by a rod 26, and links 25 connected to the inner parts of the balance beams 7. The supports 9 are connected by the vertical pivots 10 to blocks 10<b> connected by horizontal pivots 11<b> to parallel links 11 which are pivoted at 12 to the frame 13. Transverse balance beams 16 are connected at their ends to arms 17 on the blocks 10<b>, and longitudinal balance balance beams 14 pivoted at 15 to the frame are connected at their ends to the transverse beams 16 by bolts 19, resilient blocks 18 being interposed and held in cups or flanges as shown. The beams 14, 16 may, as shown, form the suspension springs. The engine 28 drives the front or rear wheels 5 through a gear-box 29 and differential gear 31. Steering on sharp curves may be assisted by brakes or clutches. A limited amount of lateral flexibility is provided in the links of the tracks to permit them to be laid in a curved path. Specification 442,864 is referred to.