baber/WOPTO huggingface dataset:
Patent GB-589606-A (GB)
Title: Improvements in or relating to pulse-operated thermionic valve circuits
IPC: H03K5/06
Filed: 1944-07-20
Abstract: 589,606. Pulse generating circuits. REID, D. G., and CHADWICK, C. C. July 20, 1944, No. 13951. [Class 40 (v)] In a circuit for converting irregular pulses into regular pulses, a single pulse converting valve is triggered into an operative condition by the leading edge of an input pulse, which is also fed over a delay line and separate channel to trigger the valve back to its initial condition. The intermediate electrodes of the valve may be coupled by a resistance capacity combination having a time-constant considerably greater than the length of the required pulses. The anode of diode V3a is biassed a few volts negative while lower end of resistance R2 is connected to a large negative bias potential, the suppressor grid of valve V1 being held sufficiently negative to cut off the anode current. Upon receipt of a positive pulse over coupling condenser C1 diode V3b conducts, carrying the suppressor grid sufficiently more positive for anode current to flow, the screen current thereby falling and potential rising. This rise is transmitted over coupling condenser C2, the suppressor grid potential rising until it is held near earth potential due to diode V4a conducting. The pulse passes down a delay line DN to a phase-reversing valve V2 feeding over coupling condenser C6 an amplified negative pulse through diode V4b to the suppressor grid of valve V1 to restore the valve to its initial condition. The output pulse is taken from the anode of valve VI and diodes V5 a, b are included for D.C. restoration. Valve V2 may be replaced by a transformer. For producing shorter pulses, condenserresistance combinations C1, R1 and C6, R8 may be arranged to differentiate the controlling pulse. When the controlling pulse is negative, valve V1 is normally conducting, resistance R2 being connected to a positive potential, the direct pulse being applied over diode V4b and the delayed pulse over diode V3b.
Patent GB-178017-A (GB)
Title: Improvements in friction transmission clutches
IPC: F16D13/52
Filed: 1921-05-19
Abstract: 178,017. Villiers Engineering Co., Ltd., and Pountney, F. May 19, 1921. Clutches, friction; operating clutches. - In actuating friction clutches, end-thrust is neutralized both in the engaged and disengaged positions, and the use of levers &c. carried on fixed brackets, cams, or screws is obviated by arranging the outer casing of a Bowden wire to abut on one clutch-member and the inner wire to be connected to the other member. As applied to a motor-cycle, alternate clutch-plates C are splined to an adapter B keyed to the end of the engineshaft A, and to a housing D, which carries a sprocket or pulley E and is rotatably mounted on a bush B4 held between a shoulder. B5 and means such as a ring-nut B6 screwed on an extension B3 of the adapter. The clutch is normally engaged by a spring G pressing on extensions H, F2 of the housing D and of a presser-plate F respectively, a shoulder B7 taking the thrust. The sheath of a Bowden cable J is connected by adjustable means M to a bent tube J3 abutting through the ball bearings J4 on the casing H, and the inner wire J2 abuts on the part F2 through ball bearings K2 and a sleeve K sliding on the tube J3. Oil passing the main engine bearing A4 is fed by ducts B8 to the plates C.
Patent GB-1005613-A (GB)
Title: Improvements in or relating to x-ray contrast preparations
IPC: A61K49/04
Filed: 1963-04-09
Abstract: A dosage unit for oral administration to patients before undergoing X-ray examination of the digestive tract comprises an intimate mixture of an X-ray contrast agent e.g. BaSO4 and a cellulosic filler e.g. methyl- or methyl, ethyl-cellulose optionally mixed with a binder e.g. gelatine or agar-agar and sugar and coated in chocolate or other pleasant-tasting coating.
Patent GB-745130-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B9/10
Filed: 1952-06-04
Abstract: 745,130. Knitting. MERZ, C., [trading as MASCHINENFABRIK C. MERZ KOMM.- GES.]. June 4, 1952 [June 22, 1951], No. 14045/52. Class 74 (2). In the event of fracture of the normal operating butt 5 of a needle slider of a double cylinder machine, the slider is taken to the correct level for ejection by action of a cam 15 on one, 4, of patterning butts on the slider, so that the defective slider does not foul projected pattern slides before it reaches a detecting and machine stopping device: pattern butts are formed in the slider edge by cutting away parts of the edge on each side of the butt. Cam 15 is rendered operative and inoperative with a needle clearing cam 11 inactive during welt formation. For this purpose, as a forked lever 16 withdraws cam 11, under the action of a cam 17, it moves a rod 19, supported by a lever 18, to swing the cam 15 about a pivot 20, into inoperative position. The cams are returned to the operative position by springs.
Patent GB-514692-A (GB)
Title: Improvement of fluxed tar for roads
IPC: C10C1/00
Filed: 1938-05-11
Abstract: 514,692. Bituminous compositions. DODD, A. H., and WEST, H. E. G. May 11, 1938, No. 14075. [Class 22] Coal dust or pitch dust is heated under pressure with a digesting oil, which consists-of a solvent and a peptizing agent, until the dust has been transformed into a bitumen-like product, a part of the digesting oil removed, as by distillation, and the product, which is liquid when hot, admixed with coal tar, or pitch or fluxed tar. A fluxing oil may be added to'the mixture before removal or before digestion, in which case all the volatile digesting oil may be removed. As solvents in the digesting oils may be used naphtha, light creosote, benzene, toluene, petroleum spirit, gas oil, or naphthalene and as peptizing agents, cresylic acid, carbolic acid, pyridine, acetone or decahydronaphthalene. Light oils which contain both solvents and peptizing agents may be used.
Patent GB-435825-A (GB)
Title: Improvements in oil preheaters for the oil burners of sectional and the like low pressure boilers
IPC: F23K5/20
Filed: 1934-05-10
Abstract: 435,825. Liquid - fuel supply. WALLSEND SLIPWAY & ENGINEERING CO., Ltd., Wallsend-on-Tyne, HENDERSON, H. E., and MORTON, J. A., 35, The Temple, Dale Street, Liverpool. May 10, 1934, No. 14104. [Class 75 (i)] A fuel oil preheater for the burners of sectional and other boilers comprises a hollow casing secured to the boiler front plate so as to overhang the furnace space, the casing being in communication with the water space of the boiler and enclosing a tube or coil traversed by the fuel-oil. In the Figure the casing 1 is secured to a flanged neck 4 on the boiler front plate 2 and a cover plate 8 on the neck carries a U-tube 3 traversed by the fuel oil. Water from the boiler enters the casing through a pipe 7 and is returned to the boiler through a passage in the neck 4. Cocks may be provided in the burner fuel supply pipe and the connections from the burner fuel supply pipe to the U-tube 3 arranged so as to allow the preheater to be byepassed wholly or partially. Regulable means may be provided in the furnace for screening the casing 1 from the source of heat.
Patent GB-949431-A (GB)
Title: Automatic gain control system
IPC: H03G3/30
Filed: 1962-04-12
Abstract: 949,431. Transistor gain control circuits. BENDIX CORPORATION. April 12, 1962 [May 3, 1961], No. 14238/62. Heading H3T. An automatic gain control circuit comprises a transistor signal amplifier to one electrode of which is applied a first automatic gain control voltage and providing at another electrode a second automatic gain control voltage which is applied to a non-linear resistor in shunt with the signal path to render the non- linear resistor conducting only when the signal exceeds a predetermined value. A transistor radio receiver comprises a double-tuned input circuit formed by permeability tuned inductors 12, 14 coupled by capacitor 16, a mixer oscillator 34, I.F. amplifiers 70, 86 and detector 98. The output of the detector 98 is fed to an audio amplifier 122 and the D.C. component, smoothed by resistor 74 and capacitor 76 is applied to the base of I.F. amplifier 70 so as to vary the gain. Corresponding variations in the voltage across resistor 82 in the emitter circuit are applied to a silicon diode 85 which forms a shunt across the tuned input circuit 14. A bias is applied from the B+ line, by means of resistors 22, 24, so as to render the diode 85 non-conductive below a predetermined value of signal input. Reference has been directed by the Comptroller to Specification 840,550.
Patent GB-333557-A (GB)
Title: Improvements in or relating to relay or servo mechanism
IPC: G05G25/00
Filed: 1929-05-07
Abstract: 333,557. Smith, W. W. May 7, 1929. Actuated or applied by springs and weights.-A spring or weight relay mechanism particularly applicable to brakes to enable the pull-off springs to be overcome and the brake shoes forced against the drum without appreciable muscular exertion comprises a pivoted lever 1 having a track comprising three differently shaped portions AB, BC, CD, a roller 3 or slide applying a force by a spring 8 or weight to the lever and means such as a pedal 6 for moving the roller, over the track, the portions of the track being so shaped that, except when the brake shoe 10 operated by the lever is being moved, substantially no work is done by the spring or weight. Fig. 1 shows the apparatus applied to a vehicle brake, the bellcrank lever 1 being pivotally mounted at 2 and the roller 3 being connected by a link 4 with the brake operating lever 6 pivoted in a pin 7. The spring 8 under tension is attached between the trunnions 5 of the roller and the pin 7. The brake shoe 10 is carried by a lever 11 pivoted at 12 and connected by a link 13 with the lever 1, and is held off the drum 9 by a spring 15. In the position shown in full lines the spring 8 exerts no turning moment on the lever 1 but when the roller is moved from A to B the moments exerted on the lever by the springs 15, 8 will be equal; further movement of the roller to C causes the lever 1 and brake shoes to be rocked to the dotted position, and the brake shoes are applied with increasing pressure as the roller is moved to D. The tracks AB, CD are concentric circles with centre at 7 and the track BC is so shaped that the moments exerted by the springs 15 and 8 are equal at all points between B and C so that substantially no work is required to move the roller. To retract the brake shoes a light draw-off spring is connected to the lever 6, or the track on the lever 1 may be so formed that the moment due to the spring 15 is always somewhat greater than that due to the spring 8. The spring 8 may be replaced by a hairpin spring slidable on a fixed track, or by an elliptical spring. Fig. 11 shows a modification in which the spring 8 is in compression between the lever 6 and a bracket 27 pivoted on the lever 6 at 28 and carrying the roller 3. The track is continued to form a projection E so that the brakes may be applied more forcibly. A bridge piece 30 limits the compression of the spring 8 and enables the brakes to be operated if this spring is broken. The roller 3 may be moved past the pivot point 2 so that the spring 8 tends to hold the brakes in the off position. The roller 3 may be replaced by a sector rolling on the track or meshing with the lever 1 by gearing. Fig. 13 shows a form in which the spring 8 is inoperative after it has contracted a distance determined by adjustable stops 32 after which other springs 8<a> are operative. Curved links 25 connect the spindle of the roller 3 with the spring. Specification 17149/14 is referred to.
Patent GB-434972-A (GB)
Title: Improvements in toy bricks
IPC: A63H33/06
Filed: 1934-05-11
Abstract: 434,972. Toy building bricks. LANGE, W., Am Bahnhof, Gr³ppenb³hren, Oldenburg, Germany. May 11, 1934, No. 14296. [Class 132 (iii)] Toy building bricks a are provided on one side with studs c and on the other side with slots b larger than the studs to allow the bricks to be relatively adjusted for the accommodation between them of apertured sheets e of paper or cardboard in imitation of mortar joints. The bricks can be assembled on a supporting base d having slots for the reception of the studs on the lowermost bricks. The slots b may be extended as in Fig. 2 or made polygonal or cross-shaped as in Fig. 3 to allow of adjustment in more than one direction. In order to increase the rigidity of the structure the slots g, Figs. 5 and 6, may be undercut and enlarged at one end to interlock with heads c<1> on the studs.
Patent GB-1175904-A (GB)
Title: Improvements in the Production of Detergent Compositions
IPC: C11D1/12
Filed: 1967-03-29
Abstract: 1,175,904. Activated cellulose. MO OCH DOMSJO A.B. 29 March, 1967 [29 March, 1966], No. 14334/67. Heading C3A. [Also in Division C5] Activated cellulose is obtained by the treatment of paper or ground cellulose, viscose, cotton or cotton linters or cellulose acetate with one or more alkylaryl sulphonic acids, acetic acid alone or in the presence of acetic anhydride or isopropanol. Dodecyl-benzene sulphonic acid is specified either in the pure state or diluted with water. The activation may be preceded by a cooking of the cellulose with water. The activation temperature is suitably in the range of from 5-50‹ C., and preferably the activation time is from 1-2 days.
Patent GB-514734-A (GB)
Title: Safety razor incorporating a blade stropping device
IPC: B26B21/50
Filed: 1938-05-13
Abstract: 514,734. Safety razors. GRANATO. F. May 13, 1938, Nos. 14352 and 14353. Convention dates, May 13, 1937, and Dec. 9, 1937. [Class 30] Adjusting-means are provided for safety razors carrying rotatable sharpening devices for the blade so that the correct position of the blade with respect to its 'guard and sharpening device can be maintained as the width of the blade decreases with wear. The blade 2, Fig. 1, is mounted in a holder 16 pivoted to a plate 9 pivoted at 17 in a carrier 1 which can be reciprocated on the frame 10. Frame 10 has a guard 19 and carries an abrading element 3 rotated by a pinion 8 engaging a rack on plate 9. The carrier 1 is adjusted both for shaving and sharpening by a rod 15 carried by handle 14 and rotated by a head 22 with marked graduations, the same marking indicating the correct adjustment for both operations. The blade may be graduated to indicate wear. In a modification, Fig. 5, the blade 27 is mounted in a holder pivoted to a support 30 and is turned over and down to engage the abrading element 29 which has a pinion 31 rotated by rack-teeth on the reciprocating support 30. The guard 24 is mounted on pins 25 and adjusted by a screw 26 with graduated head 28. The abrading element 29 is carried by a shaft 32 mounted in a graduated disc. 36 threaded on its periphery for adjustment within the main holder.
Patent GB-782816-A (GB)
Title: Process for the manufacture of para-tertiarybutylbenzoic acid
Inventor: GARDNER CYRIL
IPC: C07C51/275
Filed: 1954-05-17
Abstract: A process for the manufacture of purified tertiarybutyl benzoic acid comprises oxidizing para-tertiary butyl toluene with nitric acid having an initial strength between 2 and 50 per cent by weight, at a pressure of from 100 to 600 p.s.i. and a temperature of from 50 DEG to 250 DEG  C.  In the example, para-tertiary-butyl benzoic acid containing a small amount of terephthalic acid is obtained by oxidizing para-tertiary-butyltoluene at elevated pressure and temperature with dilute nitric acid.  The starting material may be synthesized from toluene and tertiarybutylchloride or isobutane and the product may be converted to terephthalic acid by oxidation, e.g. with nitric acid.  Specifications 655,074, 662,139, 662,229, 758,676, and 782,817 are referred to.
Patent GB-930180-A (GB)
Title: Improvements in or relating to the storage and transport of acetylene
IPC: F17C11/00
Filed: 1962-04-13
Abstract: 930,180. Storing gases. E. I. R. ESERCIZIO INDUSTRIE REVOIRA S.p.A. April 13, 1962 [April 13, 1961], No. 14373/62. Class 8(2). A method of storing acetylene comprises preparing a solution of 1 to 3 parts by weight liquid acetylene in 1 part by weight of at least one organic solvent having a boiling point of at least + 20‹C and a freezing point of not more than -92‹C., and maintaining the solution at a pressure substantially equal to atmospheric pressure and at a temperature between the freezing point of pure acetylene and the point of incipient freezing of the solution. Suitable solvents are methanol, ethanol, npropanol, acetaldehyde, methyl formate and acetone; a mixture of the solvents rather than one alone is preferred, e.g. 55% acetone, 15% ethanol, 15% methanol and 15% n-propanol, The solution is preferably stored at a temperature between about -90‹C. and about -95‹C; if the solution is to be transported over a long distance the temperature prior to shipment may be lower than this range. A preferred method of preparing the solution comprises cooling gaseous acetylene substantially down to its dew point at a pressure of from 1 to 1À3 atmospheres and introducing it into the solvent while the latter is maintained at a temperature equal to or just below the dew point and at atmospheric pressure. The resultant solution is then cooled to the storage temperature. A container for the solution comprises a metal bottle 10 the top end of which is normally open to atmosphere through a screw-threaded fitting 12 which may be associated with a vent common to a plurality of bottles. The bottle is enclosed in an air-free thermally insulating wrapping 14 made of microcellular powdered material which is surrounded by a casing 15 provided with an annular foot 11. The thermal insulation may be sufficient to maintain the storage temperature for several days but refrigerating circuits may also be used.
Patent GB-809889-A (GB)
Title: Improvements in or relating to contact spring sets for electromagnetic switching devices
IPC: H01H50/56
Filed: 1957-05-06
Abstract: 809,889. Contact members for switches. TELEFONAKTIEBOLAGET L. M. ERICSSON. May 6, 1957 [May 5. 19561, No. 14419/57. Class 38 (5). A contact spring set applicable to an electromagnetic relay 1, 2, 3, has the spring strips or wires 4 mounted on an insulating block 5 and bent against their natural bias so as to engage in either upper or lower notches 11 in a fixed contact plate 10 carried on an insulator bar 9 fixed on brackets 13. The springs 4 pass through slots 16, 17 in an insulating plate 8 which is held against the armature 2 by a spring 14. When the armature is attracted to lift the plate 8 contact tubes 12 on the ends of the lower springs 4 can engage the lower notches 11 and contact is broken between the upper notches and the tubes 12 on the upper springs. The instant of contact make and break depends upon the depth of the slots 17, 16 and certain slots may be of such depth that their contacts remain closed. The plate 10 may be drilled at 19 to make a number of electrically separate parts. This, if the slot for the left-hand contact (Fig. 2), is such that it is always closed and the holes 19 are drilled the next two contacts act as a change-over switch. For the modified arrangement of Fig. 4 the springs are arranged so that there is a movable contact for each notch 11. The fixed contact plate may then be broken at any of the necks 41 ... 43 to give the desired contact combination.
Patent GB-322420-A (GB)
Title: Improvements in or relating to inking rollers for printing machines
IPC: B41N7/06
Filed: 1928-09-18
Abstract: 322,420. Du Belle, C. S. Sept. 18, 1928. Divided on 322,264. Inking-apparatus. - Inking-apparatus for printing-machines, particularly adding or multigraph machines, comprises a number of rotatably-mounted ink-containers or reservoir rollers each consisting of two telescopically-connected perforated tubular members surrounded by absorbent material and adapted for relative axial movement to bring their perforations in or out of register, together with means for imparting axial movement to one of the tubular members of each container, means for rotating the containers, and means for introducing ink into each container at a point adjacent its axis of rotation. The reservoir rollers may be mounted coaxially in a common frame. The tubular members of the rollers are similar in construction to those described in Specification 322,264, and the inner member f has a screwthreaded axial extension f<10> extending through an aperture in a supporting-frame E, the latter aperture, at the outside, being surrounded by a ring N<1> secured to the frame E and formed with a flange n<11> forming a seating for an annular flange on an adjusting-nut Q. Rotation of the nut Q in either direction produces an axial movement of the inner tubular member f, and the nut is held in a set position by providing its periphery with spaced indentations to receive the end of a resilient pawl or detent x mounted on a washer X, secured between a lock nut N<2> and a flange at the open end of a tubular member Y which is screwed upon the extension f<10> and provides an auxiliary ink reservoir, with a filling aperture closed by a ecrew-eap y. In key-operated machines such as adding-machines the adjusting-nut Q may be provided with pinion teeth q to co-operate with a rack-bar connected to a key lever, the operation of which controls the flow of ink to the felt roller. The felt roller is preferably composed of a series of felt rings k secured together between circular end plates f<14> by a bolt or bolts f<13> and, to provide a free flow of ink between the rings, the central apertures of alternate rings are made larger than the others, thereby providing a clearance between the perforated surface of the reservoir and the inside of the ring. A radial projection or flange f<11> on the inner tubular member f is connected by a pin f<12> or the like to one end of the absorbent surface. Both reservoir rollers may be rotated independently or in unison bv means of ratchet-wheels Z on their inner ends coacting with pawls controlled by the operating mechanism of the machine. The reservoir rollers mav be arranged in contact with the type, or inking-rollers G<1> mounted on spring-pressed levers may be provided.
Patent GB-290638-A (GB)
Title: Improvements in talking machines
IPC: G11B3/00
Filed: 1928-05-17
Abstract: 290,638. Enckell, A. May 18, 1927, [Convention date]. Tone-arms cases with internal horns.-A tonearm is constructed with a main part 6, Fig. 1, having no straight portion, connected by a rightangle bend 3 and loose screw connections with another right-angle bend 1 which connects with the amplifying chamber. This construction permits horizontal and vertical movement of the sound box, and by turning the bend 3 down allows the tone arm to be housed in a cabinet of smaller height. For hill-and-dale records played with a sapphire, the sound box 8 is mounted directly on the tone arm 6, but for zigzag records for playing by a needle, the sound box is connected through a right-angle bend 9. Fig. 12 shows a modification with a horn 12 formed integrally with the bend 1 and delivering into a resonance chamber formed by the part 15 of the casing and by the cover. The bend 1 is mounted by a loose screw joint 13 to a socket 14 on the casing and the tone arm 6 connnects directly with the bend 1. The parts are shown in housed position; for playing, the parts are turned on the support 14 so that the horn opens downwardly, and the tone-arm is swung over the record.