baber/WOPTO huggingface dataset:
Patent GB-1497359-A (GB)
Title: Tape transports
IPC: G11B15/30
Filed: 1976-02-23
Abstract: 1497359 Feeding record tapes RAYMOND ENG Inc 23 Feb 1976 [24 Feb 1975] 06986/76 Heading G5R [Also in Division B8] In an end-to-end tape transport in which a tape 18 is driven by a drive belt 26 which engages a plurality of rotatable idlers 28, 30, 32 and the outer surface of the tape 18 wound on two-hubs 14, 16, the outer surface 44, 46 of each idler, Fig. 2, and hub, Fig. 3, is convex in crosssection. Preferably the temperature coefficient of expansion of the hubs is approximately equal to that of the tape.
Patent GB-634284-A (GB)
Title: Furnaces for heating pins or billets
IPC: C21D9/00
Filed: 1949-04-02
Abstract: 634,284. Metal-heating furnaces. NUTS & BOLTS (DARLASTON), Ltd., FOSTER, T. H., and HOLLAND, A. March 6, 1948, No. 7003. [Class 51 (ii)] A furnace for heating a plurality of similar pins or billets is of generally circular shape with an opening at one side providing access for loading purposes to a circular track formed with vertical holes or slots for the reception of the pins or billets and rotatable about a substantially vertical axis, and means comprising an axially-movable member supported beneath each of the holes or slots and actuated by a cam-operated hammer for successively ejecting the pins or billets when heated just as, or before, they again reach the opening. In the form shown, the track comprises arcuate elements 11 formed with vertical holes 16 and bolted to arcuate members 13 secured to a plate 14 on a driven shaft 15. The upper surface of the track is aligned with the lower edge of an annular heating passage 17 having an opening 18 substantially in line with the charging opening 19. Each member 13 is formed with holes 16a aligned with the holes 16 and containing bolts 21 which are impacted successively to eject the pins or billets by the head 42 of a cam-operated hammer 28 located adjacent the discharge opening. The hammer is slotted to accommodate the cam shaft 31 and cam 30, the contour of which is such that the hammer is depressed against the action of a compression spring 37 and then released suddenly to deliver the blow. The pins or billets are ejected into a tube 45 having a split lower end which deflects them into a shoot 44.
Patent GB-1390934-A (GB)
Title: Power shift variable ratio gears
IPC: F16H3/66
Filed: 1971-03-17
Abstract: 1390934 Change-speed gear SRM HYDROMEKANIK AB 17 March 1972 7078/71 Heading F2D A change-speed gear, for a vehicle such as an earthmover, comprises planet trains A, B, C, with (Fig. 5, not shown), or without, a directdrive lock-up clutch, on an intermediate shaft 4, which comprises first and second coaxial shafts 36, 42, connected only through the planet trains or lock-up clutch, the said first shaft 36 being driven, through meshed wheels 8, 28, by a torque-converter-driven parallel input shaft 2, whilst the said second shaft 42 drives, through meshed wheels 32, 34, a final parallel output shaft 6. Choice of spacing between input and output shafts 2, 6, may be made by modifying the casing to change the angle included between planes including respectively the shafts 2, 4 and 4, 6, minimum spacing being with these planes coincident. The planet trains shown provide two reduced ratios and one reverse, by three fluid-actuated disc brakes 48, 64, 84, holding respectively the ring gears of trains A and B and the freely mounted carrier 78 of C. Trains A and B have a common output carrier forming the said second shaft 42, whilst the three suns are integral with the said first shaft 36. Fig. 4, not shown, adds an overdrive by an additional train, having a planet carrier fast to the input shaft 36, a brakeable sun, and a ring gear fast to the carrier of train C. Fig. 5, not shown, adds a direct-drive third ratio to Fig. 1, by a disc clutch between input 36 and the carrier 78 of train C. The final output shaft 6 has a fast coupling flange 104 and a clutchable flange 110. Clutchable power take-off is provided at 20 from the input shaft 2, and also, if desired, additionally from the intermediate shaft 4. A fluid pressure system for the ratio brakes 48, 64, 84, Fig. 2, not shown, comprises two pumps in series, one of high capacity, low pressure, for rapid servo filling, the other of low capacity, high pressure, for final pressurization. Brake selection is by a manual spool valve. Two brakes may be engaged together for vehicle service braking, and their engagement for this purpose may be preceded by first engaging reverse to cause preliminary speed reduction.
Patent GB-1440908-A (GB)
Title: Process for increasing the concentration of aqueous acetic acid by extractive distillation
IPC: C07C51/44
Filed: 1975-02-20
Abstract: 1440908 Acetic acid HOECHST AG 20 Feb 1975 [20 Feb 1974] 7190/75 Heading C2C The concentration of acetic acid in aqueous solution is increased by extractive distillation with N-methyl acetamide and the separation of acetic acid from the resulting mixture. The second separation may be by rectification in a column from which the N-methyl acetamide may be recycled.
Patent GB-286700-A (GB)
Title: Improvements in the glands of turbo machines
IPC: F16J15/447
Filed: 1928-03-08
Abstract: 286,700. Akt.-Ges. Brown, Boveri, et Cie. March 9, 1927, [Convention date]. stuffing - boxes, substitutes for.-In a carbon packing for a turbine, the carbon rings are mounted on the rotor instead of in the stator, in order that heating due to rubbing contact may increase the packing clearance. The carbon rings 27, 28, Fig. 7, may be secured between L-shaped housing-rings mounted on the shaft, but are preferably mounted in undercut grooves in the shaft, or in a sleeve, on the shaft. The rings may be of different heights, as shown, in order to form a labyrinth packing. Each ring is preferably com.- posed of two segmental rings arranged side by side with staggered joints and in such a manner that the rings lock one another in the grooves. In order to avoid the necessity for a filling place a segment of a ring may be replaced by locking pieces 31, 33, Fig. 8. The leading edge of each segment may be bevelled as shown in Fig. 11. The rings may be fixed, or may be expanded by springs, or by centrifugal force. Specification 285,857 is referred to.
Patent GB-981736-A (GB)
Title: Machine for manufacturing synthetic resin wrappings, bags, or containers having closure elements on the inside surface thereof
IPC: B29C48/09
Filed: 1961-02-28
Abstract: 981,736. Making bags. SEISAN NIHON SHA KABUSHIKI KAISHA Feb. 28, 1961 [April 11, 1960 (2); June 3, 1960], No. 7372 /61. Heading A4G. A synthetic resin pouch is formed from a continuous tube 6, Fig 1, extruded from a die B and having one or two pairs of integral complimentary internal closure elements 9, 10, Fig. 4, the tube then passing through guides 12 and rollers 11, 17, 18 to a guide device D whereby the tube is flattened with the closure elements interengaging. The guide device comprises a frame 23, Fig. 8, supporting a slotted bar 25 and felt pad 37 through which the tube passes and a wedge member 19 inside the tube adjustably spring tensioned in width to accomodate the tube width and formed with vertical grooves to receive the closure elements and bring them to inter-engaging position so that, as the tube passes through a further slotted bar 74, the closure elements engage. The wedge 19 is positioned magnetically or by its weight resting on the tube and pad 37. The flattened tube or roll E is then led through rollers 202 and belts 203, Fig. 18 to a conveyer belt 239 where a heated knife 222 and cooperating cooled pressing elements 224 are operated to cut and seal the tube into pouches by a connection with bar 211 operated by cranks 212-214 moving in relation with rollers 202. A further shoe 233 compresses the welds. If two opposed pairs of closure elements 9, 10 are formed in the tube, two pouches at a time may be formed. Specification 981,737 is referred to.
Patent GB-526072-A (GB)
Title: Manufacture of vulcanised synthetic rubber-like materials
IPC: C08K5/138
Filed: 1939-03-07
Abstract: 526,072. Synthetic rubber compositions. BAIRD, W., HABGOOD, B. J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 7, 1939, No. 7465. [Class 70] Polymerized 2-chlorobutadiene-1:3 is mixed with a lead salt of catechol or of pyrogallol and compounding ingredients such as wood rosin, zinc oxide, and magnesium oxide and vulcanized by heat. Specifications 387,340 and 387,363 are referred to.
Patent GB-799690-A (GB)
Title: Improvements in or relating to transistor oscillators
IPC: H03L5/00
Filed: 1956-03-09
Abstract: 799,690. Transistor oscillator circuits; frequency shift radio signalling. SIEMENS & HALSKE AKT.-GES. March 9, 1956 [March 11, 1955], No. 7476/56. Classes 40 (5) and 40 (6). A feedback-type transistor oscillator has an amplitude limiter and a frequency controlling element in the feedback path and the load connected between the output of the transistor and the limiter so that variations in the load do not affect the feedback. In Fig. 2 the feedback path includes a load 8, a limiter comprising oppositely connected silicon diodes 1 and 2 together with a resistor 3 and a frequency determining circuit consisting of a parallel tuned circuit 4, 5. A single silicon diode could replace diodes 1 and 2, both forward and backward characteristics being used and when the limiter is temperature sensitive a temperaturesensitive resistor 9 could be provided to maintain constant output. Alternatively, biased diodes may be used. It is also suggested that the transistor could be operated in earthed base or collector configuration and that the resonant circuit could be replaced by a crystal or by a series resonant circuit. In addition the T- network 3, 4, 5, 6 could be replaced by a # network with crystal in the series arm. Fig. 3 shows the Fig. 2 oscillator modified for use in a frequency shift radio telegraph transmitter. Coil 18 which corresponds with coil 5 in Fig. 2 is transformer coupled to a network 20-30. When terminal K13 is positive with respect to K14 the rectifiers 20 to 29 are so biased that a capacitor 30 is effectively coupled across the transformer winding 18 so reducing the oscillator frequency but when K14 is positive with respect to K13 the capacitor is decoupled from the circuit and a winding 27 is coupled across the transformer secondary so increasing the operating frequency.
Patent GB-1075904-A (GB)
Title: Abrading tool
IPC: B24B23/06
Filed: 1966-02-21
Abstract: 1,075,904. Grinding. BLACK & DECKER MANUFACTURING CO. Feb. 21, 1966 [April 12, 1965], No. 7514/66. Heading B3D. An abrading tool comprises an endless belt 17 within a housing 11, a motor 19 in a frame 19A within the belt for a driving pulley 18, and guiding pulley means consisting of a bracket 21 having a main portion 22 and a pair of substantially parallel side flanges 23 having ends projecting above and below the main portion, an upper guiding pulley 24 and a lower guiding pulley 24 mounted in the respective ends of the side flanges, means for supporting the bracket for limited movement towards and away from the belt and including means to adjust the bracket to align the axes of the pulleys with respect to the belt travel, a spring 35 for urging the bracket so that the pulleys engage the belt, and means 44 to retract the bracket and at least one of the pulleys away from the belt. The pulleys 24 are mounted on needle roller bearings (27, Fig. 4) on spindles (25) mounted in the ends of the side flanges 23, the lower spindle serving as a pivot for the bracket and being mounted in a member (46) carried by the motor frame (19A). The spring 35 acts between the motor frame and main portion 22 of the bracket to pivotably urge the bracket outwardly so that the pulleys engage the belt. The means for retracting the bracket and pulleys from the belt consists of a lever 44 secured to a shaft (37, Fig. 7) which is journalled in the housing 11 and has an eccentric (42) for engaging a tab 43 on the side flange 23 of the bracket. The pulleys 24 have raised centre portions 24a to assist tracking of the belt, and the tracking can be adjusted by adjustment of the member (46, Fig. 4) on the frame (19a), one end of the member being secured to a face (50) of the frame by a screw (49) and the other end of the member being displaceable relative to the frame by means of a member (51) which is slidable in a bore (52) in the frame (19a) and has one end located in a hole in the member (46) and the other end formed with an incline engaged by the conical end (56a) of a screw (56) in the frame and having a knob outside the housing. The face (50) is inclined away from the member (46) which inherently is resiliently urged towards the face so that rotation of the screw (56) adjusts the alignment of the pulleys and hence the tracking of the belt. In another embodiment, the bracket is so pivotally mounted that both pulleys 24 are retractable from the belt.
Patent GB-656836-A (GB)
Title: Improved sand gun for removing soot from surfaces of boilers
IPC: F28G1/12
Filed: 1947-03-18
Abstract: 656,836. Sand-blast. WILSON, A. M. March 18, 1947, Nos. 7516 and 30597. [Class 60] [Also in Group XXVIII] A sand gun for removing soot from the heating surfaces of boilers &c. comprises a pair of aligned venturi nozzles 33, 34, air or steam being directed through the nozzle 33 to eject a secondary cleaning medium such as sand and water, supplied to a chamber 35, through the main nozzle 34. The nozzles are mounted in a cylindrical body 25, rotatable by a handwheel 29, at an inclination to its axis, the body having ports 26, 27 for the supply of sand and steam. The supply of sand or water is controlled by a plug-cock 20 having an indicator 19 associated with the handle, and.a pin-and-slot limit stop device 20A, 20B.
Patent GB-1017459-A (GB)
Title: Improvements in or relating to motor drive circuits
IPC: H02P7/288
Filed: 1964-02-24
Abstract: 1,017,459. Automatic control of speed and tension. AMPEX CORPORATION. Feb. 24,1964 [March 22, 1963], No. 7611/64. Heading G3R. [Also in Division H2] In a data processing system, tape supply and take-up reels are associated with a drive capstan and a pair of vacuum chambers forming loops of variable length. Loop position sensing devices provide error signals to reel servo circuits maintaining substantially constant tension in the tape. The capstan motor 44 has a substantially linear relationship between torque and current, its armature being of the low inertia type with printed circuit conductors. A saturable amplifier receives reference signals, and negative feedback signals from a tachometer generator coupled to the motor 44, the amplifier having a stable saturation output level, the output current to the motor windings being held constant until the motor speed approaches the nominal value. If a positive signal applied to terminal 48 of the amplifier is above a threshold level, transistors 83, 92, are rendered conductive so that transistors 98, 95 are switched on for energisation of the motor. When the input error signal exceeds the saturation level, the voltage across resistor 100 turns on transistor 102 to lower the voltages at the bases of transistors 108, 95, to reduce the motor current to a set level. The amplifier has a dead band between positive and negative threshold voltages which is adjusted to a minimum consistent with thermal stability. In an alternative arrangement, the bridge transistors 92-95 are replaced by a system comprising a pair of opposite polarity power sources and separate transistor amplifiers receiving switching signals from the input stage, Fig. 4 (not shown). In the absence of a command signal, a reference voltage circuit provide equal positive and negative potentials at opposite sides of divider 144, 145. A pair of gates 147, 148, each responsive to a different polarity of command signal, connects one side of the divider to earth for establishing a reference signal at terminal 149 for actuation of the capstan motor. Gate 151 connects the output terminal to earth in the absence of a "go" signal. The drive system may be energized concurrently with the entry of data, the start pulse being applied for a selected interval. The tape is accelerated and then decelerated until it is stopped, the total increment of movement being varied by selection of the amplitude and duration of the start pulse.
Patent GB-797656-A (GB)
Title: Shutter mechanism for counters
IPC: G06M3/10
Filed: 1957-03-08
Abstract: 797,656. Transfer mechanism. VEEDERROOT, Inc. March 8, 1957 [March 14, 1956], No. 7726/57. Class 106 (1). A counter comprises two trains of numeral wheels each provided with a shutter actuated by the transfer mechanism between the highest order numeral wheels, the arrangement being such that one train of numeral wheels only is visible at any one time during the counting operation. The counter as described comprises two counting trains A, B of numeral wheels 13- 16, 13a-16a mounted on parallel shafts 17, 18, the input shaft 17 driving the shaft 18 in the same direction and at the same speed through intermediate gearing. The numerals on the numeral wheels of the trains A, B are arranged in opposite order so that when one train is counting up from zero the other train is counting down towards zero, and zero is registered simultaneously on each train. The lowest order numeral wheels 13, 13a are driven directly by the shafts 17, 18 and transfer between the numeral wheels 13, 14 and 13a, 14a is by Geneva discs 25, 25a attached to the pinions 21, 21a. Higher order transfers are by multilated pinions 32, 32a, 33, 33a, locking rims 28, 28a, 29, 29a being provided to prevent movement of the transfer pinions except during a transfer operation. The transfer pinions 33, 33a are fixed to the shafts 26, 26a. The shutters 40, 40a are provided with viewing apertures 43, and have end-plates 41, 41a, 42, 42a fixed to the shafts 26, 26a and so positioned that only one train of numeral wheels is visible during a counting operation. The driven gears 44, 44a, are mounted on the respective shaft 17, 18 and are attached to the end-plates 41, 41a for controlling movement of the shutter. The gear 44a, Fig. 3, has two mutilated sections 45, 46 co-operating with the locking disc 47a mounted on the shaft 26a. The gear 44 is similarly constructed. A twotooth gear. segment 48, 48a is fixed to and is in register with a notch such as 51a in the locking discs 47, 47a, and engages the unmutilated portion of the gears 44, 44a. The locking discs 47, 47a are pinned to the shafts 26, 26a by pins such as 49a. Fig. 3 shows the position of the gear segment 48a just prior to transfer of the numeral wheel 16a to the zero position in an adding direction or just after transfer to the zero position in a subtracting direction. The transfer pinions 33, 33a are rotated ninety degrees each time the numeral wheels 15, 15a make one revolution. The gearing such as 44a, 48a, 33a is constructed to give a shutter rotational speed 3.75 times the rotational speed of the numeral wheels so that the shutter movement occupies only a part of the transfer movement time and approaches a snap action. The shutters are maintained in either extreme position by the engagement of the mutilated portions of the gears 44, 44a with the periphery of the locking discs 47, 47a. Specification 664,865 is referred to.
Patent GB-831919-A (GB)
Title: Sulphonamide compounds and preparation thereof
IPC: C07D251/18
Filed: 1958-03-11
Abstract: The invention comprises 2-(41-sulphamoylphenylamino) - 4 - amino - 1 : 3 : 5 - triazine and acid addition salts thereof and its preparation by cyclizing 4-sulphamoylphenyl-biguanide with formic acid to give 2-(41-sulphamoylphenylamino)-4-amino-1 : 3 : 5-triazine which is converted into the desired free base by hydrolysis and subsequently converted into acid addition salts if required.  The compound and its salts are used pharmaceutically as oral diuretic agents.  In an example the preparation of the free base, the formate and the hydrochloride of the above compound is described. 4-Sulphamoylphenyl-biguanide is prepared by the action of dicyandiamide on sulphanilamide in the presence of hydrochloric acid.ALSO:Diuretic preparations for intravenous or oral administration comprise 2 - (41 - sulphamoylphenylamino) - 4 - amino - 1 : 3 : 5 - triazine or a salt thereof with an organic or inorganic acid, e.g. sulphate, formate, acetate and p-toluene-sulphonate (see Group IV (b)); in conventional formulations, for example in the form of tablets or aqueous dispersions.
Patent GB-784538-A (GB)
Title: Improvements in or relating to sodium metasilicate compositions
Inventor: ALCOCK HORACE EDWARD
IPC: D06L4/664
Filed: 1955-03-17
Abstract: An optical bleaching agent is dispersed in a melt of sodium metasilicate and the melt is allowed to crystallize.  An aqueous solution of sodium metasilicate may be cooled below the melting point of the penta- or hexa-hydrate, but above the melting point of the octa-hydrate and the bleaching agent may be added at any stage prior to reaching the minimum temperature.  The temperature of the melt is then raised and a mixture of the hexa- and pentahydrate will crystallize out.  The optical bleaching agent may be 4 : 41-dibenzoyldiaminostilbene-2 : 21-disulphonic acid, a 4 : 41-diaminostilbene disulphonic acid containing a triazine ring or a coumarin derivative.  The product is used for washing wool or cotton.ALSO:An optical bleaching agent is dispersed in a melt of sodium metasilicate and the melt is allowed to crystallize.  An aqueous solution of sodium metasilicate may be cooled below the melting-point of the penta- or hexa-hydrate but above the melting-point of the octa-hydrate and the bleaching agent may be added at any stage prior to reaching the minimum temperature.  The temperature of the melt is then raised and a mixture of he hexa- and penta-hydrate will crystallize out.  The optical bleaching agent may be 4 : 41-dibenzoyldiaminostilbene-2 : 21-disulphonic acid, a 4 : 41-diaminostilbene disulphonic acid containing a triazine ring or a coumarin derivative.  The product is used for washing wool or cotton.
Patent GB-1039944-A (GB)
Title: Polyolefin compositions
IPC: C08K5/5398
Filed: 1965-02-23
Abstract: A polyolefin is stabilized with a hydrocarbyl (or substituted hydrocarbyl) thionophosphine sulphide, e.g. phenylthionophosphine sulphide or p-methoxy-phenylthionophosphine sulphide.
Patent GB-472126-A (GB)
Title: Improvements in and relating to methods of sealing metal into quartz
IPC: H01J5/32
Filed: 1936-03-16
Abstract: 472,126. Sealing metal into vitreous material by heat. BRITISH THOMSONHOUSTON CO., Ltd., GILSON, C., and BRETT, J. G. March 16, 1936, No. 7876. [Class 36] A method of obtaining a lead-in assembly for sealing into a quartz wall of an electric discharge device or the like consists in securing to or forming integral with a thin metal foil a lead-in wire and an electrode support, and then placing the assembly in an electrolytic bath to clean and reduce in thickness the assembly so that the foil after treatment has a thickness of at most 0À0006 inch. The foil may consist of molybdenum or tungsten. Since the electrolytic action is greater at the edge of the foil, a feather edge is produced and the subsequent sealing facilitated. In the example, the central portion 3 is pressed out from a molybdenum wire 1 and the assembly treated in an electrolytic bath to reduce the portion 3 to foil of the requisite thickness. A cathode 2 is welded to one end of the wire 1.