baber/WOPTO huggingface dataset:
Patent GB-730837-A (GB)
Title: Improvements relating to electric switch contact arrangements
Inventor: MUCHER GEORGE JOHN
IPC: H01H21/02
Filed: 1953-06-05
Abstract: 730,837. Snap-action switches. CLAROSTAT MANUFACTURING CO., Inc. June 5, 1953, No. 15540/53. Class 38 (5). A cup-shaped body 5 for securing for example to a variable resistance contains a centrallypivoted insulating disc 9 on which two V-shaped contact members having resilient arms 14 are mounted in apertures 12, 13. Pivoted at 18 in a notch 17 in the disc is an actuator 19 connected to the disc by a spring having arms 23 and a central coiled portion. Rotation of actuator 19 by an arm or finger (not shown) compresses the spring until its point of connection with the actuator passes the disc pivot whereupon the disc is rotated anticlockwise with a snap-action from the position shown to a position in which the arms 14 bridge pairs of contacts 10, 11 mounted on the base of the body. Movement of the actuator is limited by arms 20 which engage the body and the pivot 18 limits movement of the disc by engaging the sides of notch 17.
Patent GB-462284-A (GB)
Title: Cast iron alloy
Filed: 1935-05-29
Abstract: A white cast iron having a melting-point between 1950 and 2010 DEG F. and a Brinell hardness not less than 500 comprises 2-4 per cent of carbon, not more than 2 1/2 per cent of silicon, not more than 1 per cent of sulphur and 0,3 per cent of phosphorus, and either 0,6-2,5 per cent of boron or 0,2-2,5 per cent of boron and 1,5-9 per cent of nickel, the percentage amounts of boron and carbon in each case not exceeding 6.  Manganese, chromium, tungsten, vanadium, molybdenum, and cobalt may be present.  White cast iron comprising 2 1/2 -3\ba1/2 per cent of carbon, 0,75-1 1/2 per cent of boron, 2,5-6 per cent of nickel, not over 1 1/2 per cent of silicon, and 0,05 per cent each of sulphur and phosphorus is referred to.  In making, the boron may be introduced in the form of aluminium-free ferro-boron of low sulphur and phosphorus content, or in the form of borax under which cast pig iron is melted in the presence of free carbon, e.g. in a graphite crucible.  Specification 462,285 is referred to.
Patent GB-612297-A (GB)
Title: Improvements in or relating to signature gathering machines
IPC: B65H5/30
Filed: 1946-05-23
Abstract: 612,297. Signature gatherers; feeding sheets. SHERIDAN CO., T. W. & C. B. May 23, 1946, No. 15685. Convention date, April 11, 1944. [Class 100 (i)] A signature-gathering machine, which is especially applicable for gathering lap signatures such as shown in Fig. 2 in which the edge or part of an edge s<3> of one fold s<2> of a signature S overlaps the edge s<5> of the fold s<1>, is constructed with a signature-carrying drum 26 fitted with two sets of grippers 30 each set taking a signature for each revolution of shaft 27 from an oscillating separator 24 which feeds one signature at each machine cycle from a batch of inclined signatures S resting on their folded edges s on a conveying band 12. The grippers 30 are opened to take the signatures by a segmental gear 32 operated by a fixed cam 35 to take the signatures and by an adjustable cam 36 to release the signatures. The drum 26 rotates counterclockwise, and when the grippers release the folded edge s it is engaged by an adjustable stop device 43, which holds the signature stationarily for an instant with its trailing edge situated at a place 62 in line with the axis of the drum 26 and a transfer cylinder 60 rotating clockwise and fitted with" a pair of gripper members 63, 66 of which the grippers 66 are adapted to engage only the overlap s<3> and the grippers 63 engage the fold s<1> also. The signatures on the drum 26 are maintained against the stop 43 by means of an idler roller 52 and are constrained by a guide 55. The signature is transferred to the grippers 63, 66 by means of an oscillating flipper 80 actuated by cams 84 on the drum shaft 27, or by an air blast, and the gripper seat 65 first engages the trailing edge of the signature prior to the closing thereon of the grippers. The gripper seat is arranged radially, and the pivots of the grippers are in line with the seat so -that the grippers do not move outside the path of the periphery of the drum 60. A drum 100 fitted with a gripper 102 co-operates with the drum 60 to open out the signatures and deposit them on a saddle member 19 from which they are taken and deposited on a saddle conveyer which collects the signatures from a number of piles in such a manner that they are inserted one within another. As shown in Fig. 6 the gripper 63 has been opened by a cam 72 to release the overlap s<3> which is seized by gripper 102 which assists the opening of the signature. A spring 74 maintains the gripper 66 closed until an extra movement of gripper 63 in the opening direction causes a projection 75 on it to engage a projection 76 on the gripper 66 which is then opened at the same time as the gripper 102, so that the opened signature falls on the member 19. In a modification the grippers 63, 66, are replaced by independently actuated grippers (Figs. 7-10 not shown) which are operated by independent cams timed to operate similarly to the cams 63, 66. Specification 510,991 and U.S.A. Specification 2,251,943 are referred to.
Patent GB-399131-A (GB)
Title: Improvements in display fillers for boots and shoes
IPC: A43D3/14
Filed: 1933-05-31
Abstract: 399,131. Boot &c. trees. GUNTHER, H., 82, Bederstrasse, Zurich, Switzerland. May 31, 1.933, No. 15719. Convention date, June 17, 1932. Addition to 385,900. [Class 17 (iii).] The longitudinally - adjustable stretching rod 6 of a shoe tree 1 according to the parent Specification is accommodated as a separate structure in a long itudinal groove or recess 5 in the inflatable filler body so that air-tight connections are not required. The stretching rod 6 is made in three sections 6, 7, 8, one of which engages the other by right- and left-handed screw means for adjusting the length. The rod 6 may be shaped to the longitudinal contour of the shoe sole, if desired.
Patent GB-185515-A (GB)
Title: Improvements in or relating to wave-power apparatus
IPC: F03B13/14
Filed: 1921-06-07
Abstract: 185,515. Stanford, W., Keen, T. R. W., and Isgrove, W. C. June 7, 1921. Wave energy, utilizing.-Wave-power apparatus of the kind in which the force of the waves is employed to force water up a shoot into a storage reservoir at a higher level, from whence it can be employed for power purposes, is provided with means for raising and lowering the mouth of the shoot in accordance with the state of the tide, comprising a fluid-pressure operated motor controlled by a float, which directly operates the admission valve of the motor. The shoot 2, which communicates through a non- return valve 4 with a telescopic pipe 6, is guided by rollers 18 into a frame 16 and is raised and lowered by means of a screw 20 moved bv means of a worm-wheel 22 operated through gearing by a water-motor 28. A counterbalanced float 44, in a chamber 46 open to the tide, is connected to a lever 40, which operates a valve 38 in the supply-pipe of the water-motor, so that on the tide rising the valve is opened and the motor raises the shoot. On the tide falling, the shoot is lowered by a weight (not shown); or the float may admit water to the other side of the motor 28 to give a reverse motion; or an additional motor may be used. To permit the escape of air from the shoot when a wave enters, an air-escape valve is provided comprising a ball 56 normally resting against a ridge 58, but, when acted on by the water, closing an opening 54 :n a casing attached to the shoot. The waves entering the shoot are forced up the pipes 6, 8 to the conduit 14 to a storage chamber, the flow being regulated by an air chamber 12.
Patent GB-730929-A (GB)
Title: Stabilised aqueous hyaluronidase solutions and method of preparing them
IPC: C12N9/26
Filed: 1953-06-09
Abstract: Aqueous hyaluronidase solutions for parenteral use are stabilized by addition of ethylene-diaminetetra-acetic acid together with sodium or calcium chloride.  The hyaluronidase may be present in amounts to furnish 25 - 1000 TRU per millitre (as defined in the Specification). The ethylenediaminetetra-acetic acid may be present in amounts between 0.1 and 1 mg per millitre, and the concentration of the sodium or calcium chloride may be between 0.1 M and 0.2 M.  The pH of the solution may be kept between 6.0 and 8.0 by the addition of a non-toxic buffer such as 0.01 ionic strength phosphate buffer.  A preservative such as sodium ethylmercurithiosalicylate may also be present: it is preferred to make up the solution using a 1 : 10000 solution of this substance in pyrogenfree water.  Small amounts of amino acids such as glycine or arginine may also be added.  In an example a stock solution is prepared containing sodium ethylmercurithiosalicylate, sodium chloride and the di-sodium salt of ethylene diaminetetra-acetic acid.  The solution is buffered with disodium hydrogen phosphate and sodium dihydrogen phosphate, powdered hyaluronidase dissolved therein, and diluted with further stock solution to give a solution of the desired activity.  The stability of the solution may be increased by filling the sterile solution into ampules of such a size as to provide a minimum ratio of air-liquid interface to volume, and sealing.
Patent GB-795087-A (GB)
Title: Improvements in or relating to continuous exposure devices for producing photocopies from flat patterns
IPC: G03B27/52
Filed: 1956-05-22
Abstract: 795,087. Continuous photoprinting apnaratus. ZINDLER, W.. [trading as LUMOPRINT ZINDLER KOMM.-GES.]. May 22, 1956 [May 20, 1955; Aug. 31, 1955], No. 15803/56. Class 98(1) For optical printing from flat originals such as letters or journals up to 1 cm. thick but not bound volumes, the originals and film or photocopy paper are inserted back to back through a common feed slot shown at the left of Fig. 2 to be diverted, the former through a slot 30 for propulsion by roller 27 past exposure slot 1 in plate 17 to exit 32, and the latter through slot 31 for propulsion by roller 26 past image slot 2 in plate 18 to exit 33; and rod-like lamps 28, 29 cause reflection of the image from slot 1 around mirrors 19, 20, 21, 22 and through objective 23 to slot 2, the rollers being driven by gears 24 from motor 25 at proportional speeds, as shown to result in reduced-size image. In Fig. 3 (not shown) a generally corresponding arrangement involves use of two mirrors only instead of the four of Fig. 1.
Patent GB-410198-A (GB)
Title: Improved liquid-operated braking apparatus for motor vehicles
IPC: B60T13/14
Filed: 1933-01-02
Abstract: 410,198. Fluid - pressure brakes. WESTON, S. A., 26, Tarleton Road, Hanley, Stoke-on-Trent. Jan. 2, 1933. No. 15805. [Class 103 (i).] A liquid operated brake is applied by an expansion cylinder supplied from a pressure cylinder under the control of a device slidably mounted about the steering column near the steering wheel and which is manually engaged to hold the brakes inoperative. A pump driven from the vehicle mechanism forces liquid into the pressure cylinder depressing spring pressed plungers therein. The pressure cylinder is connected to a port 37 of a control valve, Fig. 2 and the pressure liquid from the pressure cylinder raises the valve 32 and passes to the expansion cylinder, Fig. 1 by ports 38, 39 and applies the brakes which are connected to the piston 33. To release the brakes a wheel 26 Fig. 3, mounted on a base 28 slidable on the steering column is grasped by the driver and by means of a cable 31 closes the valve 32 Fig. 2, and opens a release valve 36 Fig. 1, of the expansion cylinder. A safety valve is provided on the expansion cylinder.
Patent GB-174306-A (GB)
Title: Improved manufacture of red oxide of iron
IPC: C01G49/06
Filed: 1921-06-08
Abstract: Red oxide of iron, in a form suitable for use as a pigment, is obtained by roasting in air a mixture of ferrous chloride with excess of barium carbonate.  A solution of ferrous chloride, for example galvanizer's waste pickle, neutralized, is mixed with witherite, which is ground so that it passes through a 30-mesh sieve, but is retained by one of 150-mesh.  The witherite is present in an excess of from 50 to 100 per cent over the theoretical quantity.  The solution is evaporated to dryness, and the product roasted at 300 DEG C. until the reaction is complete. The mass is treated with water, which dissolves the barium chloride, and forms a suspension of iron oxide, from which the unchanged witherite quickly settles.  The oxide is filtered, washed, and dried, and barium chloride obtained from the filtrate by evaporation.  The process may be modified by adding to the original mixture a finely-divided iron compound, which is decomposed under the conditions of the process.  Hydrated ferric oxide, ferrous carbonate, and iron pyrites are suitable compounds. Two examples of the working of the process are given.
Patent GB-476180-A (GB)
Title: Improvements in or relating to kneading tools for the consolidation of concrete roads
IPC: E01C19/40
Filed: 1936-06-05
Abstract: 476,180. Kneading-tools for concrete. WINKLER, K. June 5, 1936, No. 15838. [Class 86] [Also in Group X] Kneading - tools for consolidating concrete road surfaces have effective lower faces which lie in a horizontal plane, and which consist of a single curved narrow limb, such as the member p, Fig. 1, or a plurality of straight or curved narrow limbs such as the members d, v, and y. A number of other suitable shapes of kneader faces are also shown in Fig. 1. The kneaders may be manually operated, or they may be connected to the pounders 47 of a machine as shown in Fig. 2. The pounders may be urged downwards by springs and may each carry a sleeve 57 in which a bolt 56 carrying the kneader 55 is rotatably mounted.
Patent GB-1033356-A (GB)
Title: Improvements in casings for flexible shafts
Inventor: BROWN EDWARD FORREST
IPC: F16C1/26
Filed: 1964-04-17
Abstract: 1,033,356. Flexible tubes. WHITE DENTAL MANUFACTURING CO. (G.B.) Ltd. S. S. April 14, 1965 [April 17, 1964], No. 15970/64. Heading F2P. A casing for a flexible power transmission shaft has an inner tube consisting of at least two metal wires 1, 2 of complementary interengaging cross-sectional shape and helically wound in smoothly overlapping convolutions so that the tube has a helically grooved but otherwise smooth bore, an intermediate helically wound stranded wire layer 3, and a protective sheath 4 of polyvinyl chloride.
Patent GB-729856-A (GB)
Title: Quick acting vice
IPC: B25B1/18
Filed: 1953-06-10
Abstract: 729,856. Vices. BEAUSOLEIL, P. F. June 10, 1953, No. 15984/53. Class 61.. In a quick adjustment sliding jaw vice, the screw spindle 7 has on one portion of its length a mutilated external thread which is adapted to engage segment-shaped plates 12 provided either in a nut 10 which is secured to the fixed jaw 2, Fig. 1, or in the hollow piston rod 16 of a pneumatic cylinder 18, Fig. 4. On another portion of the spindle 7 a standard thread 8 is provided which engages the internal threads of a nut 4 rotatably mounted but held against longitudinal movement in the base of the movable jaw 3. The spindle 7 is frictionally held against rotation in the nut 4 by a yieldable ring 15 held in an annular recess in the nut 4 by a washer 14a, the jaw 4 and spindle 7 being movable as a unit to slidably adjust the jaws. To clamp a, workpiece between the jaws, the mutilated screw threads on the spindle are brought into engagement with the segmentshaped plates on the nut 10 or piston 12 by rotation of the spindle 7 and nut 4, continued rotation of the spindle causing the frictional action of the ring 15 on the spindle to be overcome ; the spindle no longer being held against rotation in the nut 10, clamping action of the nut 4 takes place. The mutilated threads on the spindle comprise transverse collars 9 the peripheries of which are cut away by parallel planes at either side of the axis of the spindle. Transverse stop members in the nut 10 limit the rotation of the spindle.
Patent GB-321175-A (GB)
Title: Improvements in machines for delivering change for coins inserted therein
IPC: G07D1/02
Filed: 1928-06-01
Abstract: 321,175. Frank, H., and Hunt, A. J. June 1, 1928. Money delivering apparatus. - A machine for delivering coins and/or articles to the value of an inserted - coin, of any one of three or more denominations, or to its value less a predetermined fee, has means for permitting the delivery of coins and articles in any desired combination, and for preventing delivery in excess of the value of the coin inserted. Coinslots 2 - - 5, Fig. 2, for halfcrowns, florins, shillings, and sixpences are provided with shoots having means for testing for weight, diameter and milling, rejected coins passing to a receiver 10. A retained coin comes to rest in one of a series of slots 16 - - 19 in a slidable carriage 20 and depresses a carriage detent. The carriage is then moved e.g. by a lever 29, Fig. 4, having full-stroke mechanism, this movement bringing a halfcrown, florin, or shilling into contact with and operating a slidable member 34 through an abutment 31, 32 or 33; simultaneously five pennies and one halfpenny may be delivered from magazines 60 to the receiver 10. The slidable member 34 through lever and ratchet mechanism rotates a member 39 loose on a shaft 27 to take a stop arm 48 away from an extension 49 of a member 50 slidably keyed to the shaft 27, the extent of separation being proportional to the value of the actuating coin. Levers 54 - - 57 loose on the shaft 27 are then actuated to deliver coins from magazines 60, and through ratchet gearing rotate the shaft 27 until the extension 49 again abuts against the stop arm 48. In order to prevent the operation of either lever 56 or 57 which would deliver a coin of greater value than that due, a slide 77, Fig. 11, carries pivoted catches 79 adapted to engage under the levers, the slide being operated by axial movement of the member 50, which is acted on by a spring 51 and carries a face cam 53 co-operating with a projection 52 on the member 39. In a modification, catches for the levers 54, 55 may also be provided, and the members 48, 49 may then be dispensed with. In order to prevent the operation of more than one lever at a time, a gate 83 has balls 84 and distance pieces 85 so arranged that there is space to admit one lever only. The coin slots 2 - - 5 are closed by a shutter whenever any magazine 60 is empty by mechanism operated from weights in the magazines. When articles are to be delivered, levers similar to the levers 54 - - 57 are arranged to deliver them from magazines, and rotate the shaft 27.
Patent GB-612574-A (GB)
Title: Controlled pressure vapor heating system
IPC: F24D1/00
Filed: 1946-05-27
Abstract: 612,574. Thermally-operated valves. VAPOR CAR HEATING CO., Inc. May 27, 1946, No. 16091. Convention date, June 8, 1945. [Class 135] [Also in Group XIII] A valve for a steam heating system whereby the pressure of the incoming steam is automatically controlled by the temperature of the outgoing steam, comprises a valve 30 mounted in the inlet side of the system. The plunger 31 of the valve bears against a rocking lever 32 actuated by the movement of a liquid-filled bellows 35 mounted in a chamber 36 through which the outgoing steam passes.
Patent GB-833790-A (GB)
Title: Current transformer
IPC: H01F38/30
Filed: 1957-05-21
Abstract: A current transformer (see Group XXXV) is encapsulated in an epoxy resin.  One example comprises 29.2% by weight of epoxy resin (e.g. the reaction product of epichlorhydrin and bisphenol A), 6% of a plasticizer such as a long chain carboxylic acid, 7.8% of phthalic anhydride as cross-linking agent and 57% of electrical grade flint (98% through a 200 mesh screen, 99.8% pure silicon dioxide).  The epoxy resin and plasticizer are separately heated to 300 DEG  F. and mixed, whereupon the predried flint and phthalic anhydride are added and mixed for 5 minutes at 300 DEG  F.  Other mouldings in the transformers are formed from a resin comprising 34% by weight epoxy resin, 10% phthalic anhydride and 66% flint. Other fillers, for example slate, quartz and clay, may be used.ALSO:A current transformer (see Group XXXV) is encapsulated in a casting resin comprising epoxy resin together with a plasticizer such as a carboxylic acid, phthalic anhydride, and a filler such as slate, quartz, flint or clay.  The mould may be polished aluminium or brass and provided with a silicone releasing agent or silver plated.  The transformer is dried for two hours at 320 DEG F. in a forced circulation oven and assembled with the resin in the mould.  It is then placed in a heated vacuum tank and evaporated to 29-25,5 inches of mercury at a temperature 300-320 DEG F. and then cured at atmospheric pressure for 16 hours at 200-260 DEG F. After release from the mould, the cast unit is further cured for 4 hours at between 250 DEG F. and 260 DEG F.  Rubber covered cushions of crumpled aluminium foil which are disposed about the transformer are compressed as the resin contracts on cooling.  One example of resin comprises 29,2% by weight epoxy resin 6% of carboxylic acid, 7,8% phthalic anhydride and 57% flint.  The epoxy resin and plasticizer are separately heated to 300 DEG F. mixed, added to the flint and phthalic anhydride and mixed for 5 minutes at 300 DEG F. Preformed bosses which support the core of the transformer are moulded from a resin comprising 34% epoxy resin, 10% phthalic anhydride and 66% flint.
Patent GB-649840-A (GB)
Title: Improvements in automatic reset time delay relay
IPC: H03K17/288
Filed: 1948-06-16
Abstract: 649,840. Valve relay circuits. RADIO CORPORATION OF AMERICA. June 16, 1948, No. 16225. Convention date, June 26, 1947. [Class 40 (vi)] An automatic reset time delay relay comprises a capacitor which is charged through a resistor from a voltage source which includes a constant component and one proportional to the charging current flowing through the resistor, the timing cycle commences when the capacitor is discharged and terminates when the voltage across the capacitor on charging reaches a predetermined value. In this way the effective time constant of a given resistor and capacitor is very greatly increased. Fig. 2 shows a circuit in which the timing cycle commences when capacitor 5 has discharged through thyratron 11 which has been rendered conducting by a positive pulse at terminal 13. The grid potential of valve 27 is thus reduced to a low value, the voltage across resistor 25 which acts as a charging voltage source has a low value, thyratron 17 is non-conducting and relay 19 is released. Capacitor 5 is charged from the voltage across resistor 25 through resistor R, the effective source voltage being reduced as charging current flows, by the negative feed back action of stage 27 so that an effective time constant of considerable length is obtained. The voltage across resistor 25 which is proportional to the charge on capacitor 5 increases until valve 17 fires when relay 19 operates and terminates the timing cycle which recommences when the next positive pulse renders valve 11 conducting. In a modification, Fig. 3 (not shown), the bias batteries of Fig. 2 are replaced by cathode biassing resistors and the circuit is operated entirely from an A.C. supply. In a further modification, Fig. 4 (not shown), the effective time constant of the delay circuit is still further increased by amplifying the voltage produced across the charging circuit resistor R in a number of D.C. coupled stages before applying it to the grid circuit of the negative feed-back amplifying stage.