baber/WOPTO huggingface dataset:
Patent GB-1317196-A (GB)
Title: Flow control apparatus
IPC: A01C17/00
Filed: 1970-07-15
Abstract: 1317196 Distributers TOPPS PATENTS Ltd 15 July 1970 [17 July 1969] 34366/70 Heading AID A distributer for granular or loose materials as described in Specification No. 876,776 and comprising a driven turntable 1 and a surround 2 has a modified outlet 3 having a passage open at both ends and formed by a vertical side wall 11 and a top cover 7. A long, rectangular blade 4 having a vertical sharp edge 10 is hinged at 8 to the surround 2 and is controllable by the arm 9 to vary the propor-  tion of material passing either side of the blade 4. A guide member 5 is provided which has one end above the centre of turntable 1 and the other near the rim. A spinner 12 may be provided to scatter the material which has emerged from the passage which, preferably, slopes down towards the outside. The apparatus is mounted on a frame 17 which may be provided with ground wheels.
Patent GB-835565-A (GB)
Title: Improvements in a mechanism for stacking trays
Inventor: ROSTRON FRANK
IPC: B65B35/52
Filed: 1956-11-09
Abstract: 835,565. Gearing for stopping machinery. NEWMAN, RENDER & CO. Ltd. Oct. 14, 1957 [Nov. 9, 1956], No. 34382/56. Class 80 (2). [Also in Group XVII] A cam 12 for reciprocating vertically a stacking platform (see Group XVII) receives intermittent motion under the control of a solenoid 53. A driving pinion 32, continuously rotated by a shaft 28 through a reduction gear-box 29, is on a shaft passing with clearance through the cam and engages a pinion 30 on a stub shaft on the cam. The pinion 30 is also in mesh with a pinion 33 on the cam which engages a pinion 34 on a normally freely rotatable shaft 35 bearing a rachet wheel 37. The pinions 30, 32, 33, 34 may rotate the shaft 35 without movement of the cam, but when the solenoid is operated a pawl 41 engages the ratchet wheel to lock the shaft 35, thus causing rotation of the cam until current to the solenoid is interrupted.
Patent GB-193589-A (GB)
Title: Improvements in sparking plugs
IPC: H01T13/58
Filed: 1921-12-22
Abstract: 193,589. Martin, E. Dec. 22, 1921. Sparking-plugs.-The insulation and electrodes may be withdrawn from the plug casing or engine cylinder without breaking the electric circuit. The plug A is formed with a collar m which is pressed against a washer w by a screw s turning in a nut pivoted to the links k. To facilitate insertion or withdrawal, the plug is made with a rightangled bend so that the terminal t comes out at the side. The links k may be pivoted directly to a bush B, or to a ring which will swivel around the bush. According to the Provisional Specification, the plug A may be inverted so that the terminals may be examined, and it may be secured by a clamp screwing down a cap upon the top of the cylinder.
Patent GB-329686-A (GB)
Title: Improvements in or relating to coin-controlled apparatus
Filed: 1928-11-24
Abstract: 329,686. Rogers, H. C. I., and Dolman, H. J. Nov. 24, 1928. Clearing - apparatus, automatic; coin - slit closing devices; testing coins.-A rimmed coin 27 is held by grippers 10, 11, shown in plan in Fig. 2, mounted on an arm 3 pivoted at 5, and counterbalanced at 25. The weight of the coin, whether a rimmed coin or not, tilts the arm, carrying the coin past a reject shoot 8 to the position shown in broken lines, over the shoot 9 leading to the coin-freed mechanism, but an unrimmed coin is tipped out from between the grippers by the movement of the arm 3 and falls into the shoot S. The grippers comprise a fixed jaw 11 on the arm 3, and a jaw 10 pivoted at 13 and pressed towards the fixed jaw by a spring. In the initial and final positions of the pivoted arm 3, the tail of the jaw 10 engages a cam 29 and 31 to receive and to release a rimmed coin. When the arm 3 is tilted, the jaw 10 closes on to the coin, and a plate 19 pivoted on the arm 3 at 18 swings over so that pins 23, 24 on the plate bear against the coins and force it out if unrimmed. The force exerted by the plate 19 may be varied by adjusting a weight 22 on the screwed rod 20. The coin may pass to the device described in Specification 275,278, which tests for milled edge, diameter and weight. According to the Provisional Specification the cam 29 may be omitted, the entering coin displacing the grippers by its weight; the coin may be supported only by the grippers, so that an unrimmed coin passes direct to the reject shoot; an undenveight coin may fail to tip the arm 3 sufficiently to return the coin; the arm 3 may be turned to release any coin when the delivery mechanism is operated, and the coin carrier may move a rod to block the coin inlet shoot.
Patent GB-1333271-A (GB)
Title: Diffusion-coating nickel-base superalloy articles
IPC: C23C10/48
Filed: 1971-07-23
Abstract: 1333271 Coating by diffusion GENERAL ELECTRIC CO 23 July 1971 [21 Aug 1970] 34650/71 Heading C7F A method of producing an aluminium-containing coating on a Ni-base super alloy article comprises heating the article in a box-like retort to 900 C- 1100 C, preferably 1050 C in the presence of hydrogen, a filler, an aluminium source, and a halide carrier. The carrier is AlCl 2 , NH 4 F, NH 4 Cl or NaF, and the aluminium source is FeAl 2 , Fe 2 Al 5 , FeAl 3  or a mixture thereof. The article is placed in a bed comprising 5-40% Al source, 0À1-0À4% carrier, and 60-95% Al 2 O 3  as a filler, and is heated for 3 hours in a hydrogen atmosphere at a maximum of 10 psi gauge pressure. The coating consists of nickel aluminides.
Patent GB-796964-A (GB)
Title: Improvements in or relating to electrical socket connectors
IPC: H01R13/11
Filed: 1955-12-05
Abstract: 796,964. Two-part couplings. GENERAL ELECTRIC CO., Ltd., and SHEPHERD, S. A. Nov. 26, 1956 [Dec. 5, 1955], No. 34869/55. Class 38 (1). A contact assembly comprises a metal strip bent to form a U-shaped socket having arms 4, 5 the ends of which are reversely bent to form portions 3, 6 and the portion 6 being elongated at 7 to form a connecting tag. The arms 4, 5 are pressed together by a U-shaped spring 2. Such a contact assembly may be held captive in a recess 15 in an insulating body 13 by a plate 14, the connecting tag projecting through a slot 18 in the plate and shoulders 17 on the portions 3, 6 engaging projections 16 in the recess which limit lateral movement of the assembly.
Patent GB-523347-A (GB)
Title: Improvements in impact crushing or grinding apparatus
IPC: B02C13/28
Filed: 1938-12-01
Abstract: 523,347. Impact pulverizers. KING, A. Dec. 1, 1938, No. 34971. [Class 59] A beater hammer head is formed as an annulus having a number of projections on its outer periphery and an equal number of sockets on its inner periphery which are adapted to be engaged with a pair of spaced supports fixed on the arm, the maximum width of the supports being less than the least internal diameter of the annulus. As shown in Fig. 2, the annulus is provided with external projections 11 and internal sockets 5, a support 13 attached to the arm 8 engaging at each end with a socket 5. The support 13 may comprise two spaced pins or where projections are provided instead of the sockets a single pin with a concave recess to fit a projection is provided. In Fig. 5 the recesses 5 are flat-bottomed and the support 13 is shaped to correspond with the recesses. In another modification the recesses are triangular and the ends of the support 13 are shaped to engage therein. Grooves 12 concentric with the centre of the head may be formed to facilitate setting up the head when it has to be sharpened.
Patent GB-591132-A (GB)
Title: Improvements in optical apparatus
IPC: H01J31/28
Filed: 1936-12-21
Abstract: 591,132. Electron image tubes; electron multipliers. JONES, R. V. Dec. 21, 1936, No. 35010; [Class 39 (i)] Apparatus for the detection of infra-red radiation comprises an evacuated tube 3, Fig. 1, having a window 4 transparent to the radiation and containing a cathode of thin foil 2 of low thermal capacity and low conduction in 'its plane, blackened on the side 5 receiving the radiation and provided on the other side with a thermionically emissive layer 6, such as some type of caesium-silver-oxide film. The window 4 may be made of rock salt or fluorite, silver chloride or brornide crystals, and may be coated with selenium to absorb visible light. As applied to an image transformer. Fig. 1, the emission from the cathode is .focused and accelerated by an electron optical system 7, 8, 9 on a fluorescent or phosphorescent screen 10, and the voltages are adjusted so as to. bring the screen to the visible threshold due, to the normal ambient temperature of the room. This may be kept constant by enclosing the device in a thermostat, or by the provision of means for adjusting the voltages of the accelerating electrodes. In an alternative form, Fig. 2 (not shown) the thermionic cathode is constructed as a mosaic which is scanned by a cathode ray; the output is fed through an amplifier and filter to the grid of a cathode-ray tube, scanned in phase with the other so as to reproduce the image on a fluorescent screen. A form of the apparatus for the detection of infra-red radiation is shown in Fig. 3, and comprises a secondary, emission multiplier 17 in.combination with the cathode 2, ,5,6. The radiation, is interrupted periodically by a shutter 18, and the intermittent output current is indicated by a vibration galvanometer 20 in series with a condenser 21 across the output resistance 19. The sensitivity increases with the temperature of the screen, and the apparatus may be kept above room temperature in a heated compartment, or the cathode may be heated directly or indirectly.
Patent GB-815313-A (GB)
Title: Improvements in and relating to control systems for electric motors
IPC: B60K1/00
Filed: 1955-12-07
Abstract: 815,313. Controllers; control of D.C. motors; actuation of switches. KALYNYCZ, I., and COX, W. A. March 4, 1957 [Dec. 7, 1955], No. 35044/55. Classes 38 (3) and 38 (5). Relates to means which prevent the supply of current to a traction motor to drive the motor in one direction whilst it is rotating in the opposite direction. A two-way switch 1 is coupled to the reversing switch of the vehicle so that strip 6 engages contact 8 or 9 when the reverser is in the " forward " or " reverse " positions respectively. A double-pole switch 2 has contacts 10, 11, and 12, 13, which are respectively actuated to the closed positions in accordance with the forward or reverse rotation of the traction motor. Thus, when the vehicle is in motion, the motor circuit is opened if the switches 1 and 2 do not occupy corresponding positions. A shunt switch 24 is closed, when a hand brake is applied, to enable the motor to be started. When the brake is removed, the switch 24 is opened and the motor is placed under the control of the switches 1 and 2. A bolt 25 is adapted to engage disc 5 and hold it in the " neutral " position, the bolt being withdrawn against the action of a spring by means of solenoid 27 when the switch 24 is closed. As shown, the switch 2 comprises a disc 17 which is coupled to a motor-driven shaft 18 through a slip coupling. A bar 15 extends between the spring-contacts and is coupled by pin 16 to the member 17. In another arrangement, the double-pole switch comprises two pairs of contacts, each pair having a fixed and movable element. The movable elements are carried on spring-biased pivoted arms which are engageable by an intermediate member frictionally coupled to a motor-driven shaft, Figs. 7, 8 (not shown). In this manner, one or other of the contact-pairs are opened in accordance with the direction of rotation of the motor-shaft. Stops are provided to limit the movement of the pivoted arms, and the switch is carried in a casing which is angularly adjustable about the motor-driven shaft. This enables contacts, which may have remained open after the motor has been stopped, to be closed manually.
Patent GB-480818-A (GB)
Title: Improvements in or relating to endless-belt conveyors
IPC: B65G15/04
Filed: 1936-12-21
Abstract: 480,818. Endess - belt conveyers. BAINBRIDGE, F., and WOOD & CO., Ltd., H. Dec. 21, 1936, No. 35055. [Class 78 (i)] In conveyers of the kind in which the inner surface of the belt is in contact with a short endless belt running around a driving roller and a companion roller, the companion roller is of smaller diameter than the driving roller and resilient means is provided for maintaining close contact between the slack portion of the conveyer belt leaving the driving drum and the slack of the auxiliary belt. The sloping upper members of the driving head have bearings f at about the middle of their length for mounting a driving roller g, and slots h near the top for mounting a smaller companion roller k. An endless belt l passes around the rollers g, k, and is maintained in close driving contact with the conveyer belt b by a jockey roller n, which is mounted on vertical stubs o slidable in bosses m on the driving head. The jockey roller is loaded by springs p, and can be reversed to press the lower strand of the belt b against the belt l. The lower run of the belt b is used for conveying, and material is discharged by a tripper t on to a conveyer u which carries away also any undischarged material carried around. between the belts b, l and separated from them where they leave the roller k. The tripper has adjustable uprights 5 for supporting an idler roller 6 for the belt b. A telescopic inverted trough 1 shields the lower run of the belt b between the tripper and driving head. In a modification the tripper is replaced by a plough 7, Fig. 3, which is mounted on a base plate 8. Coiled springs 12 press the plough on to the belt. A side wall 13 on the base plate prevents spillage. Specification 475,175 is referred to.
Patent GB-1057456-A (GB)
Title: Multi-colour printing of flexible materials
Inventor: SAMWAYS BRUCE
IPC: B41F9/02
Filed: 1964-08-27
Abstract: 1,057,456. Intaglio printing apparatus. COLODENZE Ltd. Aug. 24, 1965 [Aug. 27. 1964], No. 36075/84 Heading B6C. A multi-colour gravure printing apparatus for applying ink impressions to a travelling web 1 of a flexible material comprises a continuous flexible inextensible belt 2 caused, in one run, to follow an arc-shaped path for supporting the web on the convex surface of the belt. Four positively driven gravure printing cylinders 7 with associated impression rollers 10 and inking and doctoring-means 8, 9 are placed at spaced intervals adjacent the belt as it describes the arc-shaped path whilst hot air drying means 11 are placed between the cylinders. The drive to the belt is effected by the positive drive of the cylinders whilst the belt is tensioned by a movable guide roller 19. The belt is urged to follow the arc-shaped path by air jets issuing from air boxes 13, 14, 15. If desired the impression rollers may be dispensed with, the air jets serving to press the web against the gravure cylinders. Each hot air drying means incorporates air coolers 11<SP>1</SP>. An infra red heater 12 is used to dry the printed web 9 before it is wound into a storage roll. In a modified apparatus the belt 2 is driven by independent driving rollers.
Patent GB-609504-A (GB)
Title: Improvements in or relating to self-locking threaded fastening devices
IPC: F16B39/284
Filed: 1945-12-28
Abstract: 609,504. Making nuts. WATSON, F. (Elastic Stop Nut Corporation of America). Dec. 28, 1945, No. 35078. [Classes 83 (ii) and 83 (iv)] [Also in Groups V and XXV] Powder metallurgy.-Self-locking nuts of the type in which the bolt impresses the thread either wholly or in part in the locking section of the nut are made by the powder metallurgy process. A mould corresponding to the hexagonal or other shape of the nut is formed in a member 18, Fig. 2, movable from station to station, and contains a hollow punch 22 fitted with a thin sleeve 24 and mandrel 26. The thickness of the sleeve determines the amount by which the bore of the locking part 10, Fig. 1, exceeds the root diameter of the threaded part 12. With the parts in the position of Fig. 2, the powder for the section 10 is filled in to the mould space. At the next station, the parts 22, 24 are lowered and the powder for the part 12 is added. Next, a punch similar to 22, but bored to fit the mandrel, is advanced into the mould and at the same time the punch 22 and sleeve 24 are differentially raised.. After compression, the parts 22, 24, 26 are all raised so that their end surfaces are level with the top of the mould and the compacted nut is ejected. The punch 22 preferably forms the chamfer on the nut and the upper punch both forms a chamfer and countersinks the bore. The nut is then sintered and the part 12 is tapped. In a modification, the punch 22 is in two concentric sections shaped to form the part 46, the inner punch part applying a greater pressure than the outer. In some cases, the tap may be such as to tap an incomplete thread in the locking section. When the metal is uniform throughout the nut, the first filling stage is omitted and all the powder is inserted with the parts in the position of Fig. 3. Electrolytic iron powdered to pass 100 mesh is compressed at from 50 to 150 tons per square inch, preferably 100, and is sintered at from 1700‹ to 2100‹ F. Carbon may be added up to 0.2 per cent or more. When a full thread is to be impressed, in the locking part, by the bolt, up to five, but preferably three per cent of lead is added to this powder for this part. Silicon and manganese may be added to the metal for the threaded part. A brass or copper locking part may be used with a ferrous threaded part or brass and bronze may be used. Brass with 60 to 80 per cent copper is compacted at 50 tons per square inch and sintered at from 1500‹ to 1700‹ F. The bronze has a copper content of from 90 to 95 per cent.
Patent GB-1515947-A (GB)
Title: Buoyancy aids
IPC: B01L7/02
Filed: 1975-06-11
Abstract: 1515947 Buoyancy jacket B A BEADLE (SAFETY MARINE) Ltd 12 Aug 1976 [26 Aug 1975] 35118/75 Heading B7A A buoyancy aid comprises a trunk fitting garment of air tight layers 11, 22 connected together at their upper peripheral regions to define an open bottomed pocket between the layers and surrounding the wearer. An inflation tube 31 is provided. The layers are of polyurethane coated nylon. A crutch strap may be provided.
Patent GB-799047-A (GB)
Title: Improvements in or relating to the extraction and purification of sapogenins
Inventor: HOLT THOMAS ERIC
IPC: C07J75/00
Filed: 1955-12-07
Abstract: Crude sapogenin-containing material, obtained by hydrolysis of natural saponin-containing material and containing coloured impurities, is purified by heating it with a solution of an alkali metal hydroxide or an alkali metal alkoxide (derived from an alkanol which contains from one to five carbon atoms) in such an alkanol, preferably methanol, to effect at least partial hydrolysis of coloured impurities, treating the reaction mixture with alkaline earth metal ions to precipitate at least some of the coloured impurities, and separating the alkanolic solution containing dissolved sapogenin.  The preferred starting material is a "dried sludge" obtained by acid hydrolysis of the sap expressed from plant material, the hydrolysis being preceded if desired by autolysis due to enzymes in the sap, and preferably removing the excess acid by washing or with sodium carbonate. When derived from sisal the sludge contains from 5-30 per cent hecogenin.  The sapogenin may be recovered from the alkanolic solution by crystallization and then further purified, e.g. by extraction with a hydrocarbon solvent containing aliphatic hydrocarbons of 6-12 carbons per molecule, or by acetylation procedures.  The preferred source of alkaline earth ions is calcium chloride or acetate which are alkanol-soluble.  In examples: (1) Kenyan "dried sludge" containing hecogenin is refluxed with methanol and sodium hydroxide, the mixture stirred with calcium chloride, filtered and filtrate concentrated, solid sodium chloride separated and solution cooled yielding crude hecogenin, which is slurried with light petroleum to remove impurities, and dried; (2) as in (1) using calcium acetate as the source of calcium ions; (3) and (4), as in (1), using "dried sludge" of Tanganyikan and Jamaican origin; (5) and (6) as in (1), using sodium in methanol and potassium hydroxide in n-butanol respectively as the hydrolysing agents. Specifications 768,459 and 784,536 are referred to.
Patent GB-761669-A (GB)
Title: Improvements in films
Inventor: ROBSON JOHN PERCY
IPC: A61L15/22
Filed: 1953-12-17
Abstract: A film for use as a surgical dressing comprises a mixture of 60 to 40 per cent of a copolymer of 25 per cent of acrylonitrile and 75 per cent of butadiene and 40 to 60 per cent of a copolymer of 80 per cent vinyl chloride and 20 per cent of vinyl acetate. The film may also contain small amounts of other plasticizers such as dimethoxyethyl phthalate.  In an example the butadiene copolymer is dissolved in methyl ethyl ketone, the vinyl chloride copolymer is dissolved in acetone and the solutions mixed; the mixture is converted into a film by the usual methods. Specification 586,447, [Group IV], is referred to.
Patent GB-1106394-A (GB)
Title: Copolyacetals and process for their manufacture
IPC: C08G2/18
Filed: 1966-08-08
Abstract: Novel copolymers comprising 89 to 98% by weight of trioxan, 2 to 10% by weight of a cyclic ether or cyclic formal, and 0.05 to 2% by weight of a bis-epoxy-ethylbenzenene, are prepared by copolymerizing at - 50 DEG  C. to + 100 DEG  C. in the presence of a cationic catalyst. Specified cyclic ethers and formals are ethylene and propylene oxide, epichlorohydrin, 4-chloromethyldioxolan, glycol formal, and diglycol formal. Specified catalysts and inorganic and organic catalysts, acid halides, and Lewis acids e.g. BF3, BF3 etherate, and diazonium fluoroborates.  Heat, oxidation and light stabilizers may be incorporated in the copolymers.
Patent GB-798451-A (GB)
Title: Method of producing trichloroethylene from tetrachloroethane
IPC: C07C17/25
Filed: 1956-11-20
Abstract: The invention comprises a method for catalytically converting symmetrical tetrachloroethane to trichloroethylene by passing vaporized sym-tetrachloroethane through a dehydrochlorination catalyst-containing zone, establishing a temperature in said zone sufficient to convert between 75 and 85 per cent of the tetrachloroethane to trichloroethylene, analysing the product composition to determine the degree of conversion and, in response to such analyses, raising the temperature in the zone to maintain a 75-85 per cent tetrachloroethane conversion throughout the reaction. The tetrachloroethane is fed into an elongated tubular reaction zone, containing a finely-divided solid dehydrochlorination catalyst, at a substantially constant rate, the feed rate being established to provide a retention time in the reaction zone of from 5 to 15 seconds.  The initial temperature established in the catalyst zone is between 350 DEG  and 450 DEG  F., the temperature being raised in steps of 3 DEG  to 25 DEG  F. until a final temperature of between 675 DEG  to 725 DEG  F. is reached.  In an example, sym-tetrachloroethane is passed into a U-shaped tube, surrounded by a heating jacket, preheated in the first leg and then passed over activated carbon impregnated with barium chloride (20 per cent by weight) in the second leg.  The maximum reactor temperature is adjusted to 418 DEG  F. and the effluent gas stream eminating from the reactor is cooled to separate out, as a gas, hydrogen chloride. The condensate is subsequently fractionally distilled and the recovered unreacted tetrachoroethane recycled. After periods of about forty hours of operation the temperature of the catalyst zone is raised in response to the analysis of the product being formed. After 584 hours a final temperature of the catalyst containing zone is 654 DEG  F., after which the reactor is charged with fresh catalyst.