baber/WOPTO huggingface dataset:
Patent GB-720168-A (GB)
Title: Improvements in or relating to centrifugal clutches
IPC: F16D43/18
Filed: 1951-05-16
Abstract: 720,168. Friction clutches, breaking-pieces. EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI GEB. May 16, 1951 [May 16, 1950; June 24, 1950], No. 11400/51. Classes 80 (2) and 80 (4). The weights or coupling blocks of a centrifugal clutch are connected to the driving rotor by natural or artificial rubber, or material incorporating rubber, and means may be provided to automatically disconnect the clutch on overheating. Provision may also be made for adjusting the mass of the coupling blocks. Friction-faced blocks 7, Fig. 1, are secured by straps 8 to a flanged rubber cup 4 bolted to the driving rotor 2, and engage a drum 10 detachably secured by screws 13 to a driven rotor. Cooling air enters at 15 and leaves through passages formed between the blocks, and cooling fins are provided on the drum 10. In a modification the rubber cup 4 is replaced by a rubber disc and the blocks are shaped to cooperate with a cylindrical drum surface. In a further modification, Fig. 6 (not shown), the blocks are secured by annular plates to pairs of rubber blocks bonded to the faces of a flexible corrugated steel disc carried by the driving shaft, and the friction face of the driven drum is spherically curved to allow relative angular displacement of driving and driven shafts. In the construction of Fig. 7 coupling blocks 30 having T-shaped projections 31 are interposed between ribs 28 on the driving rotor and are held by rubber blocks 32 which are retained by.flanged plates bolted to the ribs. Heat-insulating strips are inserted between the rubber blocks (which have a certain amount of free play) and the blocks 30. According to Fig. 10 a corrugated rubber body 53 secured to a driving rotor has a peripheral thickening to which are clamped blocks 54. The blocks have axial holes (not shown) in which may be inserted steel pins to increase the centrifugal mass, and a friction lining 57 is formed as a cap to retain the pins. A drum 59, whose inner surface is conically tapered to retain the blocks, is rotatably supported on the driven rotor by a bearing 60, and a pin 62 radially slidable in the drum normally engages a groove in the rotor to drive the latter. A plug 64 of a low-melting-point material, e.g., a bismuthtin-lead alloy fusing at approximately 100‹C., is interposed between the pin 62 and a screw 65 so that should the clutch slip and overheat the plug 64 melts and is discharged through a channel to allow the pin 62 to move outwardly and disconnect the drum 59 from the rotor. The channel may be dispensed with if the plug 64 is formed as a hollow cylinder. Alternatively, a bimetallic latch may replace the fusible plug. In a modification, Fig. 9 (not shown), fusible pins inserted in axial holes in abutting faces of a drum and a driven rotor normally interconnect the latter but shear on overheating. The bearing bush is preferably of a porous self-lubricating metal, but a grease chamber may be provided.
Patent GB-1499773-A (GB)
Title: Assembly comprising a head suitable for magnetic reading or magnetic writing
IPC: G11B5/245
Filed: 1975-03-19
Abstract: 1499773 Magnetic heads XEROX CORP 19 March 1975 [22 March 1974] 11401/75 Heading G5R An assembly for magnetically reading or writing information comprises a movable magnetic record medium 14 and a magnetic head with a transducing gap 24 defined between two pole pieces 16, 18, the gap width (distance between the pole pieces) being substantially perpendicular to the direction of movement of the medium 14 with the leading edges 20, 22 of the gap being gradually rounded and the trailing edges 26, 28 of the gap being sharp. The required gap shape may be provided by rounding leading corners of the pole pieces 16, 18, Fig. 2 (not shown), or by shaping as in Fig. 3 or by a pole piece shape intermediate Figs. 2 and 3. The pole pieces may be of metallic ferromagnetic material or ferrite, and the gap may be filled with glass, metal or oxide. Only the trailing edge parts 26, 28 of the pole pieces are effective during reading and writing, the tapering front gap portion acting during writing as a pre-erase gap to erase prior recorded data and guard bands on each side of the track, the width of which is defined by the gap width at the trailing edge, e.g. 30 Î 10<SP>-6</SP> inch. Thus although the gap length (i.e. polepiece width parallel to the track length) may be 0À002 to 0À006 inch, the head can record several thousand, e.g. 4000, bits per inch of track length, with up to more than 20,000 tracks per inch of record width. The gap 24 may be formed by rough grinding one side of a head initially having a parallel-sided gap.
Patent GB-768790-A (GB)
Title: Improvements in or relating to siloxanes
IPC: C07F7/08
Filed: 1955-04-20
Abstract: Organosiloxanes, useful as lubricants, rust inhibitors and emulsifiers and having the average general formula <FORM:0768790/IV(a)/1> where R is a divalent hydrocarbon radical or a hydroxylated divalent hydrocarbon radical, R1 is a monovalent hydrocarbon radical and n has a value from 1 to 2 inclusive, may be made by reacting a metal salt of the formula <FORM:0768790/IV(a)/2> with a halomethyl siloxane of the average general formula <FORM:0768790/IV(a)/3> in which R, R1 and n are as above defined, X is a halogen atom and M is a metal, preferably an alkali metal. Preferably the reaction is effected in the presence of a mutual solvent, e.g. dimethylformamide, at a temperature of at least 80 DEG C. and under acid conditions.  Upon completion of the reaction the metal chloride formed and solvent are removed.  Instead of the mono salt a mixture of at least one mol. of the acid per mol. of the di-salt of the acid may be used.  Acids specified are malonic, malic, tartaric, pimelic, azelaic, tetraphenyl succinic, cyclohexyldicarboxylic, maleic, dimethyl fumaric, phthalic, naphthalic, diphenic, stilbene dicarboxylic, tolane dicarboxylic, dibenzyldicarboxylic and hydroxyterephthalic acids.  The siloxanes specified are halomethyl siloxanes containing as the monovalent hydrocarbon R1 radical(s) methyl, ethyl, octadecyl, cyclohexyl, vinyl, allyl, cyclohexenyl, phenyl, tolyl, benzyl and xenyl.  The siloxanes may be copolymerized with from 0.01 to 99.99 mol. per cent of siloxanes of the average general formula <FORM:0768790/IV(a)/4> wherein each R11 is a monovalent hydrocarbon or halogenated hydrocarbon radical and m has a value from 1 to 3.  In examples, the following siloxanes and copolymers were made as above-described: <FORM:0768790/IV(a)/5> <FORM:0768790/IV(a)/6> wherein x is at least 1; <FORM:0768790/IV(a)/7> <FORM:0768790/IV(a)/8> <FORM:0768790/IV(a)/9> <FORM:0768790/IV(a)/100> which, on refluxing with equimolar amounts o phenylmethyl- and monovinyl-siloxanes in toluene solution with trifluoroacetic acid, yielded a copolymer composed o 25 mol. per cent of dimethylsiloxane, 33.3 mol. per cent of phenylmethylsiloxane, 33.3 mol. pe cent of monovinylsiloxane and 8.4 mol. per cent of <FORM:0768790/IV(a)/111> which on heating with an equimolar amount of chlorophenylmethylsiloxane at 60 DEG  C. in the presence of H2SO4 yielded the copolymer <FORM:0768790/IV(a)/122> wherein x is at least 1; (8) a mixture of <FORM:0768790/IV(a)/133> which on copolymerization with vinylmethylsiloxane yielded <FORM:0768790/IV(a)/144> where x has a value of at least 1.  The disodium and calcium salts of the siloxane <FORM:0768790/IV(a)/155> of Example 1 were found to have rust inhibiting effects on steel, and the potassium salt of the siloxane of Example 2 was found to have good emulsifying properties.
Patent GB-869287-A (GB)
Title: Product metering and container filling apparatus
IPC: B65B3/30
Filed: 1958-04-10
Abstract: 869,287. Container-filling machines. DOLE ENGINEERING CO., JAMES. April 10, 1958 [Oct. 25, 1957], No. 11414/58. Classes 94(1) and 125(2). A machine for filling containers with liquid or plastic materials includes a tubular casing 2, into which the material is fed, having a series of discharge apertures 48, the apertures being closed in desired sequences by arcuate valve members 49 on a constantly rotating shaft 33. The machine in other respects is substantially the same as that described in Specification 786,366, the material being discharged directly into the containers travelling beneath the casing 2 on a conveyer belt. U.S.A. Specification 2,549,216 also is referred to.
Patent GB-741172-A (GB)
Title: Improvements in electric resistance welding machines
Inventor: LAWSON ALAN HERBERT
IPC: B23K11/06
Filed: 1952-05-06
Abstract: 741,172. Welding by pressure. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 6, 1953 [May 6, 1952], No. 11421/52. Class 83 (4). In a roller electrode welding machine a driven electrode is rotatably mounted in a carrier free to move towards or away from the other electrode and a driving roller free to move in the same direction as, but independently of, the driven electrode is urged against that electrode to cause it to apply welding pressure to the work-piece. The electrode 2 is mounted in a carrier 4 bolted to a tubular part 5 vertically slidable with a splined connection in a cylindrical guide 6 and a driving roller 9 on a spindle 10 is mounted in a carrier 12 having a tubular part 13 sliding within the part 5. A hollow shaft 15 mounted within the part 13 carries a bevelwheel 14 engaging a bevel-wheel 11 on the spindle 10 and a rod 16 within the shaft 15 is attached to the carrier 12 at its lower end and to a plunger 18 of a pneumatic cylinder 19 at its upper end. A hollow shaft 20 is splined to the shaft 15 and by a worm and worm-wheel drive 21, 22, the roller 9 is rotated and by the pneumatic cylinder is pressed on to the electrode 2. The carrier 4 may be unbolted from the extension 5 and the electrode 2 rotated about a vertical axis. By a key 27 and slot 28 connection the carrier 12 rotates with the carrier 4. Both electrodes may be driven in the manner described and a number of rollers, some idle, may replace the single driving roller.
Patent GB-357555-A (GB)
Title: Process for the manufacture of hormone preparations which are active per os
IPC: A61K38/28
Filed: 1930-04-10
Abstract: Hormone preparations which are active when administered per os are obtained by bringing the hormone, e.g. insulin, thyroxin, or the hormone of the anterior lobe of the hypophysis, and a difficulty saponifiable lipoid substance into solution in a volatile solvent and then evaporating the solvent.  The lipoid employed may be one obtained as a by-product in the manufacture of the female cyclus hormone from placenta.  According to an example insulin is dissolved in acidulated water and the solution is diluted with alcohol and added to a solution of placenta lipoids in alcohol.  The alcohol is driven off and the solution of hormone in lipoid may be worked up to pills.  Substances promoting absorption, such as bile acids, starch, or inulin, may be added. The placenta lipoids may be obtained by stirring ground placenta with methanol, drying the mixture in vacuo, adding calcium hydroxide and extracting with boiling methanol under a reflux condenser.  The extract is freed from solvent, taken up in benzene, the solution obtained is filtered and distilled, and the residue dissolved in acetone, cooled to-10to-15 DEG C., filtered to remove separated material and the filtrate evaporated.  The evaporation residue is dissolved in benzene, the hormone is extracted from this solution with aqueous caustic soda lye leaving the lipoids in the benzene solution.  This solution is evaporated, the residue is dissolved in methanol and filtered and is finally evaporated to leave the placenta lipoids in the form of a thick oil.
Patent GB-114809-A (GB)
IPC: F24B15/02
Abstract: 114,809. Chesshire. J. H. Feb. 15, 1918. Hammers; picks.-A hammer or tool for breaking coal comprises a head b having five or more short pointed projections c, radial to the axis and equidistant about tho centre or bees. The head may be fixed on a tubular metal handle d, which is tapered and has its end e flanged or spun over into a recess in the head b.
Patent GB-1002291-A (GB)
Title: Improvements in or relating to circuits for detecting alarm conditions
Inventor: ADAMS FRANCIS JOHN
IPC: G08B29/06
Filed: 1963-03-22
Abstract: 1,002,291. Fire alarm systems; selective signalling. PYRENE CO. Ltd. March 19, 1964 [March 22, 1963], No. 11485/63. Addition to 910,920. Headings G4H and G4N. An alarm indicating device comprises a detector, which passes curent in its operated condition, shunted by a constant voltage device and an indicator giving a first indication corresponding to the voltage of the constant voltage device under normal conditions and a different indication when current is passing through the detector. In one form, Fig. 1, a number of fire detectors 10, 11, 12 are each connected in series with a Zener diode 14, 15, 16 having a 5V. reference potential and the series circuits are connected in parallel with each other and with a further Zener diode 13 having 10 V. reference potential and a meter 17 across a 20 V. supply. Under normal operating conditions detector switches 10, 11, 12 are open and the voltage indicated by the meter 17 corresponds to the reference voltage of diode 13 (i.e. 10 V.). Upon closure of one of the pairs of detector contacts, the meter indication is reduced to 5 V. If there is a short-circuit or open-circuit in the lines 6, 7 the meter will indicate zero or 20 V. respectively. Diodes 14, 15, 16 may have different reference voltages, the voltage indication of meter 17 then showing which of the detectors has operated. The Zener diodes may be replaced by batteries, Fig. 2 (not shown). In a modification, the detectors are connected in a loop circuit, Fig. 3 (not shown). In an alternative form, Fig. 4, the detector is in the form of a cable 40, 41 whose resistance changes with temperature connected between Zener diode 13 and the meter 17.
Patent GB-205445-A (GB)
Title: Improvements in levelling instruments
IPC: G01C9/16
Filed: 1923-04-28
Abstract: 205,445. CÚsar, J. April 28, 1923. Clinometers.-In a pendulum clinometer comprising a rectangular base frame a in which is rotatably mounted a shaft d diametral to a graduated arc e suspended on it, and a pendulum index ,arm h<1>, suspended from the shaft, indicates the longitudinal inclination on the arc which itself moves over a second arc j fixed to the frame a to indicate the lateral inclination, an additional index q<1> is geared to the arm h<1> to indicate the longitudinal inclination on an arc r secured transversely to the shaft d. By this arrangement the two inclinations can be read simultaneously. The arm h<1> is secured to a shaft g which is rotatably mounted transversely in the shaft d and carries a similar arm h<2> at the opposite side of the arc e to balance the arm h<1>. A bevel gear p<1> on the shaft g engages a bevel gear p<2> loose on the shaft d and secured to a counterweighted arc q carrying the index q<1>, and the gear p' is balanced by a blank cone p<3> at the other end of the shaft g- The arc e carries sights l<1>, l<2> and the arcs q, r are so arranged as not to obstruct the line of sight. The shaft g may be locked in the reading- position by pressing against it a rod n which is mounted axially in the shaft d and is normally held out of engagement with the shaft g by a spring. The arcs j, r, and q may be adapted to swivel into line with the frame a to enable the instrument to be carried in the pocket.
Patent GB-610770-A (GB)
Title: Improvements relating to chucks
IPC: B23B31/20
Filed: 1946-04-16
Abstract: 610,770. Chucks; indexing. HANCOCK, W. A. April 16, 1946, No. 11658. [Class 83 (iii)] A bevel closing chuck has a collet c forced into a conical bore of a spindle d by means of a ring e splined to the spindle and moved axially by a screwed connection with a rotating ring f carrying a ring of teeth f rotatable by a handoperated pinion. A spigot on the pinion is engageable with one of a number of holes j in a ring h secured to the spindle and a freely rotatable toothed ring g forms a backing for the pinion to prevent it from springing out of engagement with the teeth f<SP>3</SP>. The chuck may be rotated by a pulley l keyed to the spindle or, for dividing purposes, a spring bolt p<SP>2</SP> may be engaged with recesses l<SP>1</SP> in the pulley. The bolt p<SP>2</SP> is retractable from the pulley by a hand lever q pivoted at r to the spindle housing b and having a slot engaging a pin s on the bolt. The lever q may be locked in the withdrawn position by a screw t when the chuck is being rotated continuously. The housing b is angularly adjustable about a vertical axis by means of a spigot a<SP>1</SP>. An ejector rod d<SP>1</SP> is mounted axially with the hollow spindle d.
Patent GB-637810-A (GB)
Title: Device for the operation of tipping bodies on motor vehicles and trailers
IPC: B60P1/16
Filed: 1947-05-01
Abstract: 637,810. Tipping-vehicles. OFFICINE VIBERTI. May 1, 1947, No. 11659. Convention date, April 25, 1945. [Class 108 (i)] A device for facilitating side or rear tipping of a motor vehicle or trailer body of the type in which the body rests on the frame by means of ball and socket bearings is characterised in that the elements of the ball and socket bearings are locked together by locking rods a, a<SP>1</SP>, a<SP>11</SP> extending through diametral holes in the balls fixedly connected to the frame, and engaged by slots in the sockets fixedly connected to the body. The locking rods are operated from a central control either manually or hydraulically. For side tipping the lever c pivots about the removable pin d and through the action of the floating link t the rod g is used as a strut to withdraw rod a<SP>1</SP> when lever c is lifted and the rod g<SP>1</SP> is used as a strut to withdraw rod a when lever c is depressed. Withdrawal of the rods a, a<SP>1</SP> allows disengagement of the respective elements since the rods are no longer in engagement with the lower ends l of the slots i. Disengagement of the corresponding rear ball and socket by the rod a<SP>11</SP> is effected by the rod b which is operatively connected to the lever c by means of the pin d. For rear tipping the pin d is removed from its position as shown in Fig. 1 and inserted in the socket f. When lever c is raised it pivots about pin d, and the link t, which is operatively connected to the lever c by the pin d, rotates anticlockwise to withdraw pins a and a<SP>1</SP> simultaneously. The rod a<SP>11</SP> remains in the engaged position since there is no operative connection between the rod b and the lever c. In another embodiment, each locking rod for the ball and socket joint is operated by a hydraulic cylinder controlled from a central control valve.
Patent GB-970353-A (GB)
Title: Improvements in and relating to the production of 3-haloacrylic compounds
IPC: C07C51/363
Filed: 1963-03-25
Abstract: cis-3-Haloacrylic compounds are prepared by reacting propiolic acid or a derivative thereof with aqueous HCl or HBr in the presence of a salt of Cu, Cr, Hg, Mu, Fe, Zn, Cd or Al, preferably at 0 DEG -110 DEG C.  The starting materials include propiolic acid and its halides, salts, esters and amides (including amides of heterocyclic amines). Preferably the reaction conditions are such that all the carboxylic derivatives are hydrolysed to -COOH during the reaction.
Patent GB-1133253-A (GB)
Title: Selective hydrogenation of small amounts of acetylene in ethylene or gases rich in ethylene
Inventor: LANGER JOHANN
IPC: C07C5/09
Filed: 1966-03-17
Abstract: 1,133,253. Purifying ethylene. BADISCHE ANILIN- & SODA-FABRIK A.G. 17 March, 1966 [18 March, 1965], No. 11720/66. Heading C5E. Ethylene, and gas mixtures comprising predominantly ethylene (e.g. ethylene/ethane mixture from a cracker), are selectively hydrogenated for removal of minor quantities of acetylene by hydrogenation in the presence of a catalyst containing 0À01-1 wt. per cent of palladium on a carrier of silica gel having an internal surface area of 250-400 sq. m./gm. The temperature may be 50-200‹ C., the pressure 1-30 atmospheres, and the hydrogen: acetylene volume ratio 1À5 : 1-2À0 : 1. The temperature may be progressively increased as the catalyst activity decreases.
Patent GB-120187-A (GB)
Title: Improvements in or connected with Trolley Heads for Electric Traction.
Inventor: PICKERSGILL WALTER
IPC: B60L5/04
Filed: 1918-07-18
Abstract: 120,187. Pickersgill, W., Pitt, J. H., and Haigh, F. July 18, 1918. Trolly heads; devices for retaining and replacing collectors.-In a trolly head for electric traction, guide-forks p, Fig. 1, are mounted on the spindle d of the pulley o, and are connected by links n to a sleeve i, mounted in the upper end of the hollow support a, whereby, when the pulley leaves the conductor, the upward movement of the pulley due to the spring g causes the guides p to move into the position shown in broken lines. The sleeve i is free to swing about a vertical axis with the trolly wheel. Fig. 4 shows a modified construction in which contact is kept with the conductor by means of a block r of carbon or other conducting material mounted between the guides. The guides may be dispensed with and the block r used by itself. Plates t act to take the current when passing frogs or at turnings, at which places the block r rides clear. Specification 111,396 is referred to.
Patent GB-1419696-A (GB)
IPC: E21D11/38
Filed: 1973-03-13
Abstract: 1419696 Tunnels &c TREST LENORGINZHSTROI GLAVLENINGRADSTROI PRI LENGORISPOLKOME 13 March 1973 11909/73 Heading E1F A waterproof tunnel comprises a waterproof shell and load bearing lining 4 within the shell, the waterproof shell comprising a plurality of non-load bearing members 5 in abutting relationship, each of the members being trough-shaped and having edge portions 6 directed inwardly of the shell, the edge portions being exposed to the interior of the lined tunnel and adjacent edge portions being sealed to each other. The members may be in the form of rings or segments and are preferably constructed from polyethylene or metal foil.
Patent GB-219747-A (GB)
Title: Improvements in heels for footwear
IPC: A43B21/433
Filed: 1923-05-03
Abstract: 219,747. Binnie, T. May 3, 1923. Protectors, construction of.-Rubber and like composition heel pads 7, Fig. 3, are provided with one or more upstanding projections 9 reinforced with metal insets 10, to engage corresponding recesses in a similarly.shaped heel layer 2, Fig. 4, made of aluminium or other preferably hard-wearing material nailed or screwed to the upper part of a heel. The aluminium or equivalent layer is concaved on its lower surface, and the pad is either flat on its upper surface and convex on its lower surface, or vice versa, so as to make a close fit with the upper part. The forward part of the pad is provided with an upstanding flange 13 secured by screws 18<a> to the breast portion of the heel. In a modification, Fig. 1, the rear part 14 of the upper pad is made revoluble upon its central upstanding part by being severed along a line 15. The screwed holes and nail holes may be plugged with rubber.
Patent GB-370203-A (GB)
Title: Baffle-device for discharge hoppers or chutes
IPC: B65B1/28
Filed: 1931-04-23
Abstract: 370,203. Feeding devices for granular &c. materials. HENNEFER MASCHINENFABRIK C. REUTHER & REISERT, Hennef - on - Sieg, Germany. April 23, 1931, No. 12025. Convention date, May 3, 1930. [Class 59.] A discharge hopper or shoot a is provided with one or more guide-plates b arranged at an acute angle to the wall of the hopper, and bent or curved baffleplates c connecting the guide-plates with said wall. The baffle-plates may be concave and may form an interconnection between two guide-plates.