baber/WOPTO huggingface dataset:
Patent GB-1117504-A (GB)
Title: Improvements relating to the measurement of the surface level of liquids
Inventor: LONNON LAWRENCE
IPC: G01F23/44
Filed: 1965-01-22
Abstract: 1,117,504. Indicating liquid levels, electrically. EVERSHED & VIGNOLES Ltd. Jan. 10, 1966 [Jan. 22, 1965], No.2975/65. Headings G1H and G1N. Apparatus for measuring the surface level of a liquid 8 comprises a displacer 7 connected by a suspension 4 to a winding member 3, the changes in height of the displacer serving to disturb the balance of a balancing arrangement 2 in which the effective weight of the displacer, the weight of the suspension and of the winding member are balanced against a constant restoring force, movement of the balancing arrangement causing the winding member to be automatically turned so as to restore the balance. In the embodiment described the balancing arrangement is in the form of a beam 2 mounted on a flexure pivot 9, the rotation of the beam being transmitted to a shaft 14. Also mounted on the beam 2 is winding member in the form of a drum 3 and a guide roller 6, a sprocket 5 is mounted on a plate 1. The restoring force is provided by a counterweight 10. When the balance of the beam is upset by a change in level one of two switches is actuated to energize an electric motor to rotate the drum 3. The rotations of the sprocket 5 may be transmitted to two potentiometers, the indicator output from one giving the change in surface level in inches or tenths of an inch and the other output giving the level increase in feet. The indicators may be of the moving coil type or the analogue signals from the potentiometers may be converted into digital form. In another embodiment, the movement of sprocket 5 rotates a disc studded with magnetic polepieces which co-operate with a soft iron core having a coil. As a pulse of current is generated in the coil a voltage is developed across a capacitor to cause a counter to register the number of polepieces which have passed the coil.
Patent GB-524398-A (GB)
Title: Improvements in thermally tripped automatic electric circuit breakers
IPC: H01H37/76
Filed: 1939-01-30
Abstract: 524,398. Thermal switches. CAPENER, L. C., and GILMORE, P. V. Jan. 30, 1939, No. 3061. [Class 38 (v)] A thermally operated circuit breaker has a spring arm or arms held rigid by fusible metal and adapted to hold a spring loaded plunger inside a hollow terminal boss until the metal fuses, the spring plunger being capable of reinsertion into position on cooling. The U-shaped spring fixed by set screw at 4 to the terminal boss 1, has extensions 5 extending through an aperture 6 into a chamber 2 containing a fusible alloy. A plunger 7, loaded by a spring 8 has a neck 10 which is gripped by the spring 3 at curved portions 11. On overheating the alloy melts allowing the tension of spring 8 to eject plunger 7 by separating the limbs of spring 3 thus forcing the usual plug-on fitting off the contact pins 12. The U-shaped spring returns immediately to its original position so that when the alloy solidifies the plunger may be reinserted.
Patent GB-394612-A (GB)
Title: Improvements in or relating to single-roll grinding mills
IPC: B02C4/34
Filed: 1933-02-01
Abstract: 394,612. Roller and roller-and-breast mills. SODER, O., Niederlenz, Argovie, Switzerland. Feb. 1, 1933, No. 3127. Convention date, Feb. 5, 1932. [Class 59.] In order to adjust accurately the pressure between a grinding block 2 and roller 1 by means of a sliding weight 20 on a lever arm or loading beam 19, the latter is adapted to be maintained horizontal in all positions of the block due to wear. As shown in the Figure, the breast 2 is secured by a bolt 7 to an arm 6 pivoted at 11 to the mill casing. The upper end of the lever 6 is bifurcated to receive trunnions 12 on a crosshead containing a revoluble screwed sleeve through which a rod 15 projects the purpose of which is to maintain horizontally the loading beam 19 and to transmit the load therefrom to the arm 6. The rod 15 is pivoted to a crank 16 the shaft 17 of which is fixed to the beam 19 weighted at 20. A screwed stop 23 limits the downward movement of the weighted end of the lever arm and a cam 25, operated by an arm 26, is adapted to bear on the other end of the lever arm to separate the breast 2 from the roller 1. The breast 2 is adjusted in relation to the roller by a screw 9. Several breasts bear on the roller 1 and each is fed with material which first passes through crushing rolls 27, 28, each roll 28 being mounted in a casing 32 pivoted at 33 and pressed against the roller 27 by means of a screw 36 in a pivoted stirrup 38 bearing on a lug 34 on the casing.
Patent GB-670095-A (GB)
Title: Audio-frequency signalling arrangements for automatic telephone systems
IPC: H04Q3/00
Filed: 1949-02-04
Abstract: 670,095. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSONFeb. 4, 1949 [Feb. 5, 1948], No. 3148/49. Class 40 (iv). In an audio-frequency signalling arrangement, e.g. for transmitting digits from a subscriber's station to an exchange register, in which resonance circuits are connected by a keyset at the subscriber's station to select the corresponding one or a combination of signalling currents of different frequencies transmitted over the line circuit from the exchange to actuate the appropriate receiving devices, false actuation of a receiving device due to the shunting effect of the line capacity is prevented by causing each device to be affected oppositely by two signalling currents, or by one signalling current and an auxiliary current. First arrangement, Fig. 1. Depression of a key, e.g. KO, at a subscriber's station A connects the associated resonance circuits across the line loop and releases relay RRS to connect each of the signalling generators f1... f4 and an auxiliary generator f5 in series with the line, and the selected frequencies f3, f4 are passed over transformers T1, T2 and an amplifier GS through filters F3, F4 and rectiaers E3, E4 to create a sufficiently high potential across two resistances in series with the control grids of valves G3, G4 to fire the latter and thus to operate register relays RR2, RR1. Each of the resistances in series with the control grids of valves G1 ... G4 is connected in series with all or part of a resistance r1, r2. Due to the line capacity, small amounts of the unwanted signalling frequencies f1, f2 and of the auxiliary frequency f5 will be transmitted to the receiving end, but the potential generated across resistance r1, r2 by the frequency f5 counterbalances that produced across the appropriate resistances by the frequencies f1, f2. Second arrangement, Fig. 2. The signal generators f1 ... f10 are connected over filters F1 ... F10 and rectifier bridges E1 ... E10 to the line. The opposed windings of polarized register relays RR1 ... RR5 having three positions including an intermediate neutral position are each connected to one of the rectifier bridges. Thus the possibility of false actuation of a register relay is prevented by the balancing out of the effects of the unwanted frequencies. When the register is seized from a conventional substation, relay RR6 acts as an impulsing relay. Series or parallel resonance circuits may be used. Third arrangement, Fig. 3 (not shown). This is somewhat similar to the second arrangement, but has the three-position relays connected through pairs of filters to a circuit bridged across the line loop and fed by the ten signal generators.
Patent GB-391926-A (GB)
Title: Improvements relating to winding hanks of yarn on to bobbins and the like
IPC: B65H49/30
Filed: 1932-02-03
Abstract: 391,926. Skein-holders or swifts. HICKS, BULLICK, & CO., Ltd., HICKS, H. C., CLYDE, H., and MARTIN, P., 24, Coates Street, Belfast. Feb. 3, 1932, Nos. 3187, 6159, and 7475. [Class 120 (ii).] In a swift or ryce for supporting hanks when unwinding yarns therefrom of the kind in which the hank supporting arms 3, Figs. 1 and 3, are inwardly and outwardly movable within predetermined limits, each arm 3 is connected by a rigid link 9 to a member 7 freely turnable on the spindle 8 so as to ensure equal and synchronous radial movement of the arms and permitting the arins to move outwards under centrifugal force so as to maintain the hank taut. The arms are secured to cylindrical. members 3a accommodated in tubular members 2 secured to the hub 1, the members 3a being urged outwardly by springs 5. Intercommunicating air cushioning or balancing holes 4, Fig. 3, may be provided. Alternatively holes 4a are provided at the bottom of each tube 2. According to the first Provisional Specification, guides adjustable on the members 2 and encircling the ends of the arms 3 may be provided to limit the outward movement of the arms.
Patent GB-1419985-A (GB)
Title: Photochromic filter for human spectacles
IPC: G02B1/04
Filed: 1973-01-22
Abstract: 1419985 Uses of photochromism AMERICAN CYANAMID CO 22 Jan 1973 3235/73 Heading C4S A sunglass filter comprises a solid solution of 5 x 10<SP>-5</SP> to 1 x 10<SP>-2</SP> moles per litre of photochromic material with three components each with a polynuclear conjugated aromatic ring system in a polymeric matrix protected by an oxygen impermeable barrier layer. The matrix comprises anhydride hardened epoxy, polycarbonate or polymeric phenyl siloxane resins; examples, preparation and physical properties are described. The resins are free from reactive sites, residual monomers and free O 2  capable of reacting with the photochromic material. The matrix material may be placed between glass, acrylo-nitrile polymer, PVA or PVC layers to prevent the entry of oxygen to the matrix, the edges of the sandwich being sealed, e.g. with plastics material or solder on metallized surfaces. Additional filters or polarizers may be added partly as protection against wavelengths to which the eye is not sensitive and which do not cause the retina to contract. Further hard abrasive resistant layers shaped to provide optical connections may also be added. The matrix is prepared by mixing finely divided resin and photochromic material and compression or injection moulding it in N 2 . Alternatively the resin and p.c. material are dissolved in chlorobenzene, tetrachloroethane or methyl chloride which is evaporated by freeze drying under vacuum to produce a moulding powder. Supersaturated solutions are formed by dissolving the p.c. material and one component of the resin, e,g, in benzene or toluene, vacuum evaporating and adding hardener. The matrix contains 3 components which absorb blue, yellow-green and orange-red light respectively. Photochromic compounds mentioned include benzanthracenes, benzotetraphenes, benzocoronenes, triphenylenes, naphthocoronene, and benzoperylenes. Compounds may be deuterated and have F substituents.
Patent GB-1362642-A (GB)
Title: Oriented structures of tetrafluoroethylene copolymers
IPC: B29C55/02
Filed: 1973-01-22
Abstract: 1362642 Oriented structures E I DU PONT DE NEMOURS & CO 22 Jan 1973 [31 Jan 1972] 3241/73 Heading C3P An oriented structure having an orientation ratio of at least 1À1 of a copolymer of tetrafluoroethylene and a perfluoro-(alkyl vinyl ether) in which the alkyl group contains 1 to 5 carbon atoms, the units in the copolymer derived from the perfluoro-(alkyl vinyl ether) monomer comprising 1À0 to 7% by weight of the copolymer and may be in the form of a film, a funicular structure or a tubing, beading or filament structure. The oriented structures are prepared by conventional means, e.g. drawing filament or ribbon in nip or draw rolls, drawing film on tenter frame equipment and radially expanding tubing against the interior wall of a pipe of larger diameter. A suitable copolymer is tetrafluoroethylene/perfluoro-(propyl vinyl ether).
Patent GB-1336694-A (GB)
Title: Attaching tape to cassette hubs
IPC: G11B23/113
Filed: 1972-01-24
Abstract: 1336694 Attaching webs to cores KING INSTRUMENT CORP 24 Jan 1972 [I March 1971] 3247/72 Heading B8R Apparatus for attaching ends of magnetic tapes to spool cores comprises a tape supply roll 14, Fig. 1, from which a predetermined length of tape 16, advanced past guide rollers 18 and a stationary guide pin 20 and under a block 26, is bound on to a staked hub 132A under control of a timer or reader (not shown) sensing a stop mark, whereupon the tape feed is stopped and a pair of hubs 132B, 132C mounted on a hub block 24 is advanced upwardly by a piston cylinder assembly 142 into an underlying relationship with the tape 16. When the assembly 142 is stopped a further cyclinder 180, Fig. 4, is actuated to cause its piston 186 to pivot a crank 190 associated with a unidirectionally driven knurled roller pair 173 to angularly displace the rollers co-operating with a pair of rollers 169, having respective grooves 170 in which are located plastics rods 54, to advance the rods a distance corresponding to the length of the hubs 132B, 132C and provide end sections 54A, Fig. 9, which when respective pistons 104, 106, Fig. 1, are actuated are severed by cutting edges 94, Fig. 2, integral with their cutters 28, 30 which are displaced downwardly by the pistons 104, 106. Continued downward movement of the cutting edges causes the severed end sections 54A to be forced into axially extending key slots 138, Figs. 4, 9, for staking the tape 16 in the slots, the tape section between the hubs 132B, 132C being severed adjacent the slots by the cutting edges 94 after a further downward movement. The hub supporting block 24 is thereafter lowered by the assembly 146 and the hubs 132A, 132B removed for loading into a cartridge, and the hub 132C placed on the spindle 66 replacing the hub 132A, a further pair of hubs 132 being mounted on the hub supporting block for repetition of the staking process.
Patent GB-824281-A (GB)
Title: New polythioureas and process for their manufacture
IPC: C08L75/02
Filed: 1956-02-01
Abstract: Polythioureas of the formula (-R-NH-CS-NH-)n where R is -Ar- or -Ar-Z-Arsubstituted by a sulphonic acid group, and in which -Arrepresent a phenylene-(1 : 4) residue, Z is a divalent hydrocarbon radical having less than 3 carbon atoms or -NH-, -S- or -S-S-, and n is such that the molecular weight of the compound is greater than 1000, and each residue R is bound to a further thiourea group -NH-CS-NH- or to a free amino group, and salts of these polythioureas with alkali or alkaline earth metals or ammonia.  The compounds may be made by reacting a diamine H2N-R-NH2 with a dihalide of thiocarbonic acid.  In the example, 4,41-diaminostilbene-2,21-disulphonic acid is reacted with thiophosgene in aqueous caustic soda containing sodium acetate to produce products of the formula <FORM:0824281/IV (a)/1> in which terminal stilbene disulphonic acid residues are bound to free amino groups.  The polythioureas may be used with carriers, e.g. water, gelatine, lactose, gum, starches, magnesium stearate, talc, vegetable oils, benzyl alcohols, polyalkylene glycols, white petroleum jelly and cholesterol as pharmaceutics.ALSO:Pharmaceutical preparations for enteral, parenteral or topical administration comprise organic or inorganic carriers and compounds of the general formula (-R-NH-CS-NH-)n where R is -Ar- or -Ar-Z.Arsubstituted by a sulphonic acid group, and in which -Ar-represents a phenylene-(1 : 4) residue, Z is a divalent hydrocarbon radical having less than 3 carbon atoms or -NH, -S- or -S-S-, and n is such that the molecular weight of the compound is greater than 1000, and each residue R is bound to a further thiourea group -NH -CS-NH or to a free amino group, and salts of these polythioureas with alkali or alkaline earth metals or ammonia, together with an organic or inorganic pharmaceutical carrier.  Cholesterol gums, vegetable oils, petroleum jelly polyalkylene glycol and benzyl alcohol are specified as a carrier.  The preparations may also contain anti-bacterial or anti-virus substances and may be made up as tablets, dragees, salves, creams or as solutions, suspensions or emulsions.
Patent GB-127541-A (GB)
Title: Improvements in or connected with a Mill Train for the Manufacture of Small and Medium Iron Bars.
Inventor: LINARD RAYMOND
IPC: B21B35/02
Filed: 1919-02-10
Abstract: 127,541. Linard, R. Feb. 10, 1919. Rolling.-A rolling-mill train comprising roughing-rolls and intermediate rolls driven by one motor, and finishing-rolls driven by another motor, is provided with a second set of finishing-rolls which can be driven by either of the motors. The motor 11 drives the roughing-rolls 1, 2 and the intermediate rolls 3, 4, 5, 6, 5<1>, 6<1>. The motor 12 drives the finishing-rolls 7, 8, 9. The finishing-rolls 7<1> may be driven by the motor 11 or 12. Bars are carried from the roughing-rolls 1, 2 by mechanical conveyers 10 to the intermediate rolls 3, 4, where they are transferred by a workman at 18 to the rolls 5, 6 or 5<1>, 6<1>. A workman at 21 then transfers them to the finishing-rolls 7, 8, 9, or 7<1>. When a change of section is required, the rolls 5<1>, 6<1>, 7<1> may be unclutched, and the change made while the other rolls remain at work; these rolls may therefore be used for sections that frequently vary. When the rolls 7, 8, 9 require to be changed, the motor 12 is stopped and the rolls 7<1> are clutched to the shaft 14.
Patent GB-888821-A (GB)
Title: Sheet transfer mechanism
IPC: B41F21/05
Filed: 1960-01-29
Abstract: 888,821. Feeding sheets. MIEHLE-GOSSDEXTER Inc. Jan. 29, 1960 [March 17, 1959], No. 3271/60. Class 100(1) In apparatus for feeding sheets from a table 14 to a gripper cylinder 17 by means of oscillating gripper fingers 11 and gripper pads 12, the usual system of springs which maintain the actuating members against cams for imparting relative motion to the fingers and pads is replaced by a single resilient member consisting of a torsion bar 33. The bar 33 is mounted within a rockable hollow shaft 19 to which the gripper fingers 11 are clamped and about which the pads 12 are pivotally mounted. The shaft 19 is mounted for rocking in brackets 18 secured to a shaft 10 eccentrically mounted about journals 22 and oscillated by known means, and the shaft 19 is rocked by a cam 21, rotating about the journals 22, which engages a cam roller 23 on a lever 24 secured to the shaft 19. The gripper pads 12 are rocked about the shaft 19 by a second rotating cam 30 which engages a roller 31 on a lever 32 rockable about the shaft 19. The torsion bar 33 is splined to the shaft 19 along a central zone thereof, and is splined at the end to a lever 39, Fig. 4, the free end of which engages a settable eccentric pin 42 mounted on the lever 32: thus, by pre-setting the lever 39 and pin 42 to exert torsion on the bar 33, both cam levers 24 and 32 are urged respectively against their cams 21, 30 by the torsion bar 33. Preferably, the cams 21, 30 and the various levers and rollers are duplicated at the two ends of the assembly. The sheets, registered on the table 14 by lays 13, are gripped and carried to the cylinder 17 along the path A-A, and the gripper fingers 11 and pads 12 are retracted from that path during the return oscillation.
Patent GB-117582-A (GB)
Title: Improvements in Crown Corking Machines.
Inventor: BLAXTER AUGUSTUS PEARCE
IPC: B67B3/02
Filed: 1918-02-25
Abstract: 117,582. Blaster, A. P., Blaxter, A. P., and Chaloner, G. W., (trading as Barnett & Foster). Feb. 25, 1918. Capsules, ' crown corks,' and the like, applying.- The hand - lever which effects the relative movement between the bottle platform and the crowning- head of a machine for applying metal crowns or capsules to bottles is weighted so as to reduce the effort needed on the part of the operator. As shown, applied to a machine in which the crowning-head is stationary, the platform 1 is moved upwards by a handlever 2 which has a cam or fork to engage an adjustable collar on the rod 5 as usual, and is provided with a weight 7. The downward movement of the platform is effected by gravity when the lever 2 is released, and during this return movement a belt 10 connected to an arm 9 of the lever 2 drives the usual feeding-device on the hopper 17. The belt 10 passes a guide-pulley 11, over a pulley on the shaft 16 of the conveyer disk, and down again past the pulley 11 to a weight 13. During the working stroke of the lever 2, the pulley 12 is arrested by a ball or roller 15 which binds between the rim of the pulley 16 and a race 14, and the belt 10 then slips over the pulley 16. The conveyer disk of the feeding-device is preferably mounted elastically on its spindle, as described in Specification 117,160.
Patent GB-725160-A (GB)
Title: Improvements relating to beet harvesters
Inventor: SCHMIDT LEWIS WALLACE
IPC: A01D27/04
Filed: 1953-02-05
Abstract: 725,160. Beet-harvesters. JONGENEEL, A. M. Feb. 5, 1953, No. 3313/53. Class 6 (3). A beet-harvester, of the type whereiu the beets are simultaneously dug and picked up by a spiked wheel 26 and topped while carried by the wheel, comprises a frame 8 pivoted at its rear end on brackets 12 secured to the rearaxle housing 6 of a tractor and mounted at its front end upon a power-actuated link 16, the frame 8 pivotally supporting a floating frame 21 which carries the pick-up wheel, the latter being driven from the rear axle 7 by a chain 30. The link 10 depends from an arm 15 rigid with a rock-shaft 14 journalled on the tractor chassis 2 and rocked by a hydraulic ram 19 to raise and lower both frames 8, 21. The frame 8 includes a rear shaft 10 rotatable' in the brackets 12 and on which the frame 21 is separately rotatable. A jockey-sprocket 34 maintains the chain 30 taut in all positions. The frame 21 also carries an elevator for the beets, a stripping member 38 for removing the cut tops from the wheel 26 and a shoot 39 deflecting stripped tops on to a transverse conveyer 40, these parts 'being as described in Specification 668,813. A spring 50 connected between the frames 8 and 21 maintains the pick-up wheel in ground-engagement.
Patent GB-540005-A (GB)
Title: Electro-plating method and apparatus
IPC: C25D7/02
Filed: 1941-03-12
Abstract: 540,005. Electroplating sliding-clasp fasteners &c. PLASCO, Ltd. March 12, 1941, No. 3368. Convention date, May 29, 1940. [Class 41] Articles such as sliding-clasp fasteners are electroplated by being fed through a bath by rotating roller systems consisting of intermediate bi-polar electrodes disposed between the anodes and cathodes. The steel or other metal rollers 7 separated by insulation pieces 8 are mounted on two sets of shafts 6 carried by a frame 3 which can be raised and lowered, cathodes 9 suspended from bus bars 10 being disposed within each set and anodes 12 suspended from bus bars 14, 22, being arranged surrounding the sets. Anodes and cathodes are all made of the metal to be plated on the articles. The fasteners 19 are fed spirally around the left-hand set of rollers 7, reversed at 20, and fed around the righthand set; the rollers are shown as being all driven by chain and sprocket gearing from drive shaft 16, but some of them may be idlers. The current deposits metal on the articles and also on the parts of the rollers which at the instant are outermost facing the anodes ; as the rollers rotate so that these portions face the cathodes the metal deposited thereon is discharged into the electrolyte and deposited on the cathodes, which when built up by this process to a substantial extent are interchanged with the anodes.