baber/WOPTO huggingface dataset:
Patent GB-788052-A (GB)
Title: Improvements relating to the use of chisels
Inventor: DOWNING ROBERT ERNEST
IPC: B22D45/00
Filed: 1952-10-27
Abstract: 788,052. Percussive tools. HOLMAN BROS., Ltd. Oct. 27, 1953 [Oct. 27, 1952], No. 12725/55. Divided out of 788,051. Class 124. A method of manufacture which includes the use of a compressed air operated chisel on an exposed surface comprises locating a suction nozzle close to the cutting edge of the chisel and connecting the nozzle to a vacuum to collect the fine dust released by the cutting. As shown, a chisel 2 has a duct 3 connecting a nozzle 4 formed near the cutting edge 5 through a bore 6 in a pneumatically operated tool to a source of vacuum. The nozzle may be formed in a downwardly stepped part of the chisel and face towards the cutting edge. The nozzle may be connected to the vacuum by a pipe external-to the chisel. The chisel may be of the type described in Specification 788,051. Specifications 694,963 and 695,010 also are referred to.
Patent GB-810711-A (GB)
Title: A magnetic powder clutch or brake
IPC: F16D63/00
Filed: 1957-04-18
Abstract: 810,711. Magnetic clutches and brakes. ELEKTRO-MECHANIK G.m.b.H. April 18, 1957 [April 21, 1956], No. 12738/57. Class 35. In a magnetic powder clutch or brake, having a substantially cylindrical working gap 15 open at both ends 17, the construction of the working gap is such that the magnetic field strength therein is greatest at the ends to prevent or reduce escape of powder, e.g. by making at least one of the surfaces 16 forming the gap of double truncated conical form so that the gap is narrower at the ends, a suitable value for the angle of inclination 18 of the surface being about 1 to 2 degrees.
Patent GB-916912-A (GB)
Title: Improvements in combined air and hydraulic piston-and-cylinder devices
IPC: B30B15/16
Filed: 1958-04-22
Abstract: 916,912. Hydraulic intensifiers. TRYTHALL, W. J. C. April 21, 1959 [April 22, 1958], No. 12759/58. Class 69 (2). A combined air and hydraulic apparatus for operation of a machine, such as a press, comprises a cylinder 1 having a piston 7 adapted to be operated by air to move its rod 8 into a bore 9 in a work ram 2 to displace hydraulic fluid therefrom into an annular space 10 between the ram and a pressure pot 3 and apply a pressure stroke to the ram, and a second annular space 11 for the admission of air under pressure to retract the work ram 2 and piston 7. Air is supplied to the upper surface of the piston 7 which moves downwardly and the rod 8 displaces the hydraulic fluid in the bore 9 through radial passages 12 into the space 10 between seals 16 retained in position by plates 15a, 15b secured to the pressure pot 3 and ram 2, respectively, to provide the ram to which the tool is secured with an intensified pressure. The ram is retracted by air pressure supplied to the space 11 and the liquid is displaced from the space 10 to return the piston to its uppermost position. In alternative embodiments, the annular space 10 may be formed by a flexible diaphragm assembly or a ring or tyre moulded in rubber-like material.
Patent GB-611341-A (GB)
Title: Method of and machine for casting enlarged bodies on pins or rods and trimming said castings
IPC: B29C45/14
Filed: 1946-04-29
Abstract: 611,341. Casting composite pins etc.; shearing. PLASCO, Ltd. April 29, 1946, No. 12787. Convention date, Oct. 11, 1945. [Classes 83 (i) and 83 (iv)] [Also in Groups V and XXVI] In a method of die-casting a body on a member such as a pin, the member is delivered to a position where it is held by grippers between a pair of dies which are then closed upon a portion of the member while casting material is injected into the die cavity, the die parts being then separated and the grippers actuated to move the member with the casting thereon to a trimming-station. The cast material may be either metal or a plastic. Pins 31, Figs. 1 and 2, are fed one at a time from the mechanism 30, operated by a piston 57, and directed by a guide tube 34 into the passage 45 between the partially open gripper blocks 44, 441, each supported on an arm 43, 431. The downward movement of the pin is halted by an adjustable stop 39, of a relatively soft material to prevent damage to the pin end, so that when the gripper arms are finally closed on to the pin by operation of the piston rods 80, 80<SP>1</SP>, the head of the pin is held in correct location in the die cavity 36 of the dies 37, 38, which are then brought to the closed position by operation of the piston rods 68. Thereafter, casting material is injected to form the head 41, the injection mechanism depicted in Fig. 2 being appropriate for plastic materials. After casting, the dies 37, 38 are opened and a piston rod 83 moves the grippers to a trimming station shown in dotted lines in Fig. 2, where the gate 48 is trimmed by blades 47, 47<SP>1</SP>, reciprocated in the guides 65, 651 by piston rods 69. The gripper blocks 44, 441 then open to release the pin and return to commence another cycle of operations. The correct sequence and timing of operation of the various pistons, which are pneumatically operated and have spring returns, is effected by a rotary valve mechanism 28 (see Group XXVI) driven through a shaft 23 controlled by a clutch mechanism 25. In a modification dual injection cylinders may be used to speedup production or to inject plastics of different colours or combinations of colours. T-slot couplings are used between the shafts 68 and the dies to allow for quicker coupling or uncoupling of the dies, and the dies to be aligned solely by the guides 64, 64<SP>1</SP>. The swinging movement of the gripper arms 43, 43<SP>1</SP> to the required positions is limited by stop pins 121, 122 engaged by an offset finger 123 on the rocker arm 82.
Patent GB-557832-A (GB)
Title: An awning or cover for lifeboats and other boats
IPC: B63C9/03
Filed: 1942-09-14
Abstract: 557,832. Boat covers. PATON, W. H. Sept. 14, 1942, No. 12958. [Class 113 (i)] A boat cover comprises a central fore-and-aft supporting member A to the sides of which are hinged curved longitudinal roof sections which are divided longitudinally into leaves so that the outer leaves El, F<SP>1</SP> can fold up within the inner leaves E, F, means being provided for tightening the peripheries of the outer leaves against the gunwale H. The tightening means may include drop links J on the outer leaves to engage with pivoted locking devices M on the gunwale. The outer leaves may also carry hinged rod Q engageable in securing means on the gunwale whereby the cover may be secured in a raised position to act only as an awning. The cover may be made of thin sheet steel and the supporting member A may be protected by a curved plate U. Below the gunwale there may be fitted rowlocks W as described in Specification 551,203.
Patent GB-1458922-A (GB)
Title: Apparatus for electroplating foil strip
IPC: C25D5/02
Filed: 1974-03-22
Abstract: 1458922 Selective electro-plating of strip DR EUGEN DURRWACHTER DODUCO 22 March 1974 [17 May 1973] 12976/74 Heading C7B Apparatus for the continuous selective electroplating of a metal strip comprises a rotatably mounted wheel 9 having an insulated strip-receiving annular recess about its periphery; means, e.g. rollers 8, 8', for guiding the strip in the recess about a portion of the wheel; a flexible, electrically insulating masking band 14 and means, e.g. rollers 15, 15', for guiding the band about the periphery of the wheel atop the strip to partially mask the strip; an arcuate conduit 22 for electrolyte spaced from the wheel and supporting a metal strip electrode (25), Fig. 4 (not shown); and outlet ports spaced at intervals along the conduit and corresponding apertures in the electrode whereby on delivery of electrolyte to the conduit 22 jets of electrolyte are directed via the outlet ports of the conduit and the apertures in the electrode on to the exposed face of the strip to thereby effect plating of the areas not masked by the masking band. The wheel may be provided with pins (33) Fig. 5, (not shown) to key into notches provided along the edges of the metal strip and the masking band to prevent relative movement therebetween.
Patent GB-936788-A (GB)
Title: Light-polarizers and methods for making them
IPC: G02B5/30
Filed: 1962-04-04
Abstract: 936,788. Polarizers. INTERNATIONAL POLAROID CORPORATION. April 4, 1962 [April 25, 1961], No. 12988/62. Class 97 (1). The polarizer comprises an element of photolytically oriented dichroic dye or stain on an unoriented support. In an example, a cellulose triacetate film whose surface was converted to cellulose by alkaline hydrolysis was stained with a dye solution and dried before being exposed to polarized ultra-violet radiation. In that way, the chromophoric groups of the dye molecules lying along an axis parallel to the polarizing plane of the incident radiation were decomposed, while those groups at right-angles to the polarizing plane were unaffected. By successively exposing and shielding different areas to the decomposing radiation, these areas may be given different polarizing axes.
Patent GB-1172725-A (GB)
Title: Apparatus and Method for Detecting Bulges in Continuous Casting.
Inventor: REINHARDT ANTHONY DAVID
IPC: B22D11/20
Filed: 1967-03-20
Abstract: 1,172,725. Measuring thickness electrically. UNITED STATES STEEL CORP. March 20, 1967, [March 25, 1966], No.13010/67. Heading G1N. Apparatus for detecting bulges in a continuous metal casting as the casting passes through an unsupported path following a cooling stage, comprises a pair of detectors 12 which engage the broader sides of the casting and a recorder 28 which measures the algebraic sum of the detector outputs. A bulge is stated to be indicative of the presence of unsolidifed molten metal in the casting and when the algebraic sum exceeds a predetermined value, the recorder can automatically actuate means to change the rate of cooling or the speed of travel of the casting.
Patent GB-440800-A (GB)
Title: Improvements in or relating to land vehicles, more particularly land motor vehicles
IPC: B62D61/10
Filed: 1934-04-30
Abstract: 440,800. Motor fore - carriages. TENNANT, W. J., 111, Hatton Garden, London.-(Tatra Works Ltd. Motor Car & Railway Carriage & Wagon Builders; 200, Kartouzska, Smichov, Prague) April 30, 1934, No. 13013. [Class 79 (iii)] [See also Group XXXII] In a motor or like road vehicle having at least one multi-axle sub-frame or bogie, in which the wheels are independently spring- mounted, e.g. by means of floating semi-axles, the main frame 9 is pivoted to the one or more sub-frames about an horizontal transverse axis and also about a vertical axis. In the arrangement shown, the semi-axles 15 are pivoted to a central longitudinal sub-frame member 3, which also supports the engine 1 and gear-box 2, while the longitudinals 9 are forked at 8 and pivoted about an horizontal transverse axis to an upper transverse member 10 which is capable of swinging about a vertical axis 14 relatively to a lower transverse member 6 secured to the central member 3. The springs 7 are disposed between the semi-axles and the member 6.
Patent GB-451134-A (GB)
Title: Improvements in and relating to apparatus for indicating the quantity of liquid in acontainer
IPC: G01F23/42
Filed: 1935-05-01
Abstract: 451,134. Indicating liquid levels. FRONTERAS, E. M., 10, Oakleigh Avenue, Edgware, Middlesex, and BONORA, G., 185, Via Maggiore, Bologna, Italy. May 1, 1935, No. 13014. [Class 123 (i)] In a liquid-level indicator applicable as a fuel gauge, a toothed sector 2 engages a pinion 3 on a drum 4 on which is wound a Bowden cable 6. The other end of the cable is connected to a tubular slide 7 within a guide 8 in a fuel tank 9. A spring 10 tends to force the slide 7 downward. A float 11 is hinged to the slide 7 so that it normally hangs in a tilted position. The drum 4 is prevented from unwinding by a manually controlled latch 12 engaging the rack 2. The drum 4 carries a ratchet wheel 14 associated with a pawl 15 actuated by an electromagnet 17 controlled by a switch 18 of the mercury tilting type. The switch is actuated by a rod 19 passing through an opening 20 in the slide 7, and opening 22 in the float 11, in which the rod 19 is gripped when the float becomes horizontal on reaching the liquid. The pawl 15 is thereby actuated to stop further rotation of the drum 4 and sector 2. The amount of fuel is indicated by a scale 2b on the sector. In a modification, the switch is carried by the plunger 7, and carries a downwardly projecting rod which contacts with a freely-floating float on lowering the plunger, in order to tilt the switch.
Patent GB-799920-A (GB)
Title: Process and devices for the accelerated growth of monocrystals
IPC: C30B7/00
Filed: 1957-04-25
Abstract: <PICT:0799920/III/1> <PICT:0799920/III/2> Monocrystals are grown by feeding a saturated solution to the surface of a crystal 6 (Fig. 2) by means of jets 5 from holes 3 in a sprinkler, and removing the desaturated solution by suction.  In one embodiment for growing a crystal of ammonium dihydrogen phosphate on a seed 50 (Fig. 7) in a container 51 filled with a saturated solution of ammonium dihydrogen phosphate, a main sprinkler 52 is placed against a face 53 of the crystal and an auxiliary sprinkler 54 is placed against a side face 55.  A pump 57 feeds solution through conduits 58 and 59 to the sprinklers so that jets of solution impinge against the faces of the crystal, and spent solution is sucked into cavities surrounding the nozzles and removed by a conduit 60.  The solution fed to sprinkler 54 is passed through a cooler 56 so that supersaturated solution is fed to the slower growing face 55.  A motor 61 actuates an oscillating system 62 which moves the sprinklers in front of the faces of the crystal so that they are swept by the jets.  The crystal is on a support 64 on an arm 63 which is raised on a screw 65 as the crystal grows.  Other forms of sprinklers with means for removing spent solution are described.
Patent GB-1454243-A (GB)
Title: Gasket manufacture
IPC: B27D1/08
Filed: 1975-04-01
Abstract: 1454243 Gaskets ENGINEERING COMPONENTS Ltd 1 April 1975 13255/75 Addition to 1429805 Heading F2B The method of forming cork gaskets in the parent Specification is modified by the additional step of attaching elongated segments to the free surface(s) of the tubes so as, after slicing, to form ears 4 on the completed gasket. Preferably the ears are drilled after slicing, so that the resulting bolt-holes 5 do not become distorted by the slicing process.
Patent GB-740638-A (GB)
Title: Improvements relating to the recovery of waste gases in the synthesis of urea from ammonia and carbon dioxide
Inventor: MARULLO GERLANDO
IPC: C01C1/24
Filed: 1953-05-12
Abstract: The process of the parent Specification for the separation of the components of a mixture of ammonia and carbon dioxide by means of an aqueous solution of an ammonium salt of a strong acid, wherein the selective absorption of ammonia is effected at a pressure higer than atmosphere, is carried out at a temperature higher than 100 DEG C so at to increase the selectivity of separation. A suitable temperature is 125-135 DEG C, and a suitable pressure is 3.5 atm.
Patent GB-411278-A (GB)
Title: Improvements in and relating to shock absorbing mechanism for typewriting machines
IPC: B41J19/04
Filed: 1933-05-06
Abstract: 411,278. Typewriters. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Elliott-Fisher Co. ; Cedar Street, Harrisburg, Pennsylvania, U.S.A.) May 6,1933, No. 13282. [Class 100 (iv).] Carriage - retarding devices.-The carriage, during the latter part of its return-movement, actuates line-spacing mechanism, and a member connected to shock - absorbing mechanism. The member may co-operate with a stop for limiting letter-spacing movement of the carriage. The line-spacing frame 1<a>, Fig. 5, travels on the platen frame and supports a type-carriage 2 which is urged towards the right by a spring drum and is provided with an escapement co-operating for letter-spacing with a rack 3 on the linespacing frame. On return of the type-carriage, line-spacing mechanism is actuated and locked by co-operation of a hook 5 on the typecarriage with an adjustable stop 7 on a drawbar 4. The rack 3 is now mounted with longitudinal freedom on blocks 28, and is connected to a brake 38 mounted on a bracket 37 on the line-spacing frame. The brake comprises an annulus 38 mounted on a spider 45 which is mounted on a shaft 40 on the bracket 37 and has friction-plates 52, 53 abutting on discs 54, 55 secured to and splined on the shafts respectively, the disc 55 being engaged by an adjustable spring-plate 63. The annulus is connected by a link 42 to the rack, and spring-urged rollers 49 are provided for clutching the annulus to the spider when the rack is moved towards the left. The rack is provided with a resilient stop 31 which normally abuts on an adjustable stop 32. When the type-carriage has been returned, the hook 5 engages the stop 7, and an abutment on the type-carriage engages an adjustable margin stop 36 on the rack. Thereafter, the rack and type-carriage make a short further movement during which the line-spacing mechanism is actuated and locked, and the brake becomes effective to arrest the rack and type-carriage without shock. The spring drum then causes the rack and type-carriage to rebound in letterspacing direction, the type-carriage being thereby moved into the required marginal position, and the movement being cushioned by the stop 31. During the rebound movement, the line-spacing mechanism is unlocked by means comprising, as described in Specification 373,457, a cam adjustable on a rod 18.
Patent GB-234498-A (GB)
Title: Improvements relating to packing rings for bearings
IPC: F16J15/32
Filed: 1925-05-21
Abstract: 234,498. Deutsch - Luxemburgische Bergwerks-und H³tten Akt.-Ges. Abteilung Friedrich Wilhelms-H³tte. May 21, 1924, [Convention date]. No Patent granted (Sealing fee not paid). Dust, excluding.-A ring a of felt, leather or the like protrudes beyond the inner and outer peripheries of clamping metal rings b and is retained in position both axially and circumferentially by springs c engaging grooves m in the bearing. As shown in Fig. 1 the packing ring a is pressed against a projection n on the bearing casing l. For very dusty atmospheres two or more rings a may be arranged side by side and separated by a plate b. In another modification, springs c, Fig. 4, are fitted on both sides of the packing ring a.
Patent GB-681985-A (GB)
Title: Improvements relating to air-blast switches
IPC: H01H33/16
Filed: 1948-05-14
Abstract: 681,985. Air-blast switches. CZECHOSLOVAK METAL & ENGINEERING WORKS, NATIONAL CORPORATION, and GROSSE, V. May 14, 1948 [April 21, 1948], No. 13344/48. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 16,1948] Class 38 (v) An air-blast switch with resistance-shunted main contacts 1, 2 has arcing electrodes 3, 4 connected in series with the resistance 5, the application of the airblast to the electrodes being controlled by a valve 20 operated by the blade 6 of a disconnecting switch. In the figure, compressed air is admitted at 11 and acts on a piston 12 to move the main moving contact 1 downwardly. When the arc formed between the main contacts is extinguished by the air-blast through the fixed nozzle contact 2, an arc is, struck at the electrodes 3, 4 in series with the resistance. This arc is extinguished when the initial movement of the blade 6 by the operating lever 52 opens the valve 20 to permit compressed air to flow from the main contact chamber 7 through a pipe 16 to the chamber 8 containing the electrodes 3, 4.
Patent GB-572010-A (GB)
Title: Improvements relating to the tinning and soldering of sheets or articles of aluminium or aluminium alloy
IPC: B23K35/28
Filed: 1943-08-17
Abstract: 572,010. Soldering. LOUIS, L. Aug. 17, 1943, No. 13357. [Class 83 (iv)] A tinning or soldering composition for use in soldering sheets or other articles of aluminium or alloy thereof comprises from 31 to 42 per cent or thereabouts of tin, 5 to 9 per cent of zinc oxide, 20-27 per cent of zinc chloride and 24 to 32 per cent of ammonium chloride, all in powder form with water of crystallization up to 15 per cent of the mixture. One composition may be made by melting tin powder and stirring therein three parts of zinc oxide to 15 parts of tin and after cooling, powdering the mixture and adding to two parts thereof 10 parts of zinc chloride powder. 12 parts of ammonium chloride powder and 16 parts of the aforesaid tin and zinc oxide mixture. In another composition, 50 parts of tin powder and 37.5 parts of ammonium chloride powder are mixed with 108.8 parts of a powder formed from the residue after the manufacture of zinc chloride from scrap or other zinc digested with hydrochloric acid and containing 32.3 parts of zinc powder, 8.8 parts of zinc oxide powder, 29.9 parts of zinc chloride powder, 13.3 parts of lead powder, 9.15 parts of lead chloride powder and 15.35 parts of water of crystallization. The powder is applied to the surface of the work which is then heated by a blowlamp &c. until a dross appears and then a dense smoke with the formation of a dull white deposit, i.e. to a temperature of' about 230‹ C., whereupon the surface is rubbed with an iron or steel tool and the tinned surface then cleaned. The tinned article may then be soldered with ordinary solder by an iron to a similarly tinned aluminium &c. article or to an article of another metal suitably tinned.
Patent GB-437658-A (GB)
Title: Improvements in or relating to the treatment of platinum contact masses
IPC: B01J23/96
Filed: 1934-05-03
Abstract: Platinum catalysts used in sulphuric acid manufacture are regenerated by treatment with formic acid which may be dissolved in a volatile solvent such as water or alcohol and applied to the catalyst by spraying.
Patent GB-997801-A (GB)
Title: Improved ribbons and methods of making same
IPC: B41J31/04
Filed: 1964-04-01
Abstract: A ribbon for carrying ink in a printing device is made by weaving into a fabric a synthetic multifilament stretch yarn, which has been prepared by false twisting and heat setting in the twisted condition, and treating the woven fabric so that it becomes uniformly puckered. After false twisting and heating, the yarn is subsequently heat annealed by dry heating at 325-460 DEG F. for 0.2 to 1.5 seconds. Preferably both the warp and weft contain this stretch yarn but a conventional non-stretch synthetic thermoplastic, multifilament yarn may be used as the warp.  Nylon yarn and/or polyethylene terephthalate yarn may be used.  During weaving, the stretch yarn is kept under sufficient tension to stretch the yarn to its maximum length usually 200% to 300% of its relaxed length.  After weaving, the fabric is removed from the loom and exposed in a fully relaxed condition to water containing 0.1% by weight of detergent, e.g. an alkylaryl polyether alcohol surfactant, and a neutralizing agent, e.g. sodium carbonate, at 175-200 DEG F. for 15-45 minutes resulting in the puckering of the fabric, shrinkage being in the order of 10-30% of the original width and length of the fabric.  The fabric is frame dried at 220-235 DEG F. under tension at predetermined width and is then exposed to dry heat, e.g. at 350-400 DEG F., and held at the proper width to set the fabric.  The fabric is cut into ribbon form and conventionally inked.  In the examples, a twisted stretch nylon yarn is prepared by false twisting on a machine using a spindle speed between 40,000 and 240,000 r.p.m. with an average speed of approximately 150,000 r.p.m. at the rate of 95 to 130 turns per inch with an average of 121 turns per inch while heating the twisted yarn in a temperature range from 350-440 DEG F. and at rate of 25-50 yards per minute to give an exposure time of 0.2-1.5 seconds after which the heat set yarn is subsequently annealed in a temperature of 325-460 DEG F. for approximately the same length of time.  During this latter process the yarn is overfed into the twisting unit at a rate varying from 0.2 to 18% in a rate range of 15-117 yards per minute. Polyacrylic acid may be applied to the yarn to facilitate weaving.  Specification 902,330 is referred to.