baber/WOPTO huggingface dataset:
Patent GB-184754-A (GB)
Title: Improvements in or relating to safety razor blades
IPC: B24D15/08
Filed: 1921-02-23
Abstract: 184,754. Salerni, P. M. Feb. 23, 1921. Stropping-apparatus.-A safety-razor blade 20 has a hole 26 in its back, which is substantially directed towards the cutting-edge and which is adapted to engage a pin 23 on the carrier 10 of a razor-sharpening device of the kind referred to in Specification 108,531. The pin 23 has a lateral tooth, and the hole 26 has lateral extensions at right-angles to the direction of an aperture 28 extending to the side of the blade through the wall of the hole 26, so that the blade is secured on the pin by an action similar to that of a bayonet-joint. The pin 23 is carried by a forked member embracing a reduced part of the carrier 10 and resiliently connected thereto by a metal member 21 embracing an enlarged cylindrical part of the carrier; the pin passes through a hole in the member 21 so that they can only turn together, but the spindle part of the carrier 10 may rotate independently of them so that the edge of the blade is pressed against the whetting-surface 4 during reciprocation of the carrier and the blade is reversed at the end of each stroke. The carrier is reciprocated in a frame 1 by a handle 9 and carries pinions 18 gearing with racks 17 fixed in the frame to reverse the blade and press the edge thereof on the whetting-surface. The frame 1 has openings at each face, in which are secured bases carrying the stropping and honing surfaces, one being removed while the other is in use and both being secured in the openings when the device is closed. The honing and stopping surfaces are arranged so that the blade is moved over the former edge foremost and over the latter with its back foremost. The pinions 18 are kept in engagement with the racks by members 30 mcunted on the carrier and engaging between overhanging parts 31 of the frame 1.
Patent GB-718538-A (GB)
Title: An improved pneumatically actuated interlocking mechanism for machine tools
Inventor: LEMAN HERBERT VERLINDE
IPC: F16P3/16
Filed: 1952-03-25
Abstract: 718,538. Machinery guards. HUGHES. Ltd., G. H. March 25, 1953 [March 25, 1952], No. 7599/52. Class 80 (4) The supply line to a pneumatically-operated machine tool, such as a press, is controlled by an interlocking mechanism which ensures that other parts of the machine, such as a guard, are correctly positioned before the tool is operated. The mechanism comprises a cylinder having an inlet port 9 and an upwardly spring- loaded piston '2 whose rod carries a foot 5 which when the guard is closed may enter a recess in a slide 22. A spring-loaded valve 12 slidable on an extension of the piston normally closes an outlet port 10, while a pin 16 fixed to the piston carries a normally-open valve 17 in an exhaust port 18. A port 19 is connected to the press operating mechanism. If an attempt is made to start the press before the guard is closed, i.e. if air is admitted to the port 9, the piston 2 is depressed until the foot 5 strikes the slide 22. During this movement the spring 13 expands to hold the valve 12 closed so that no air can pass to the port 19. If, however. the guard has been closed and the foot 5 can enter the recess in the slide, the additional downward movement of the piston closes' the valve 17 and causes its lower face to engage and open the valve 12 and start the press. To stop the press the air supply to the inlet 9 is cut off, whereupon the piston 2 is lifted by its spring and opens the valve 17 to exhaust the press mechanism. The interlock mechanism may be used in a pneumatically-operated bar feed mechanism for lathes to ensure that air cannot pass to the spinner head to feed the bar until the bar feed tube is in line with the spindle of the mechanism and is locked, or may be used with pneumatic clamping devices for work operated upon by pneumatic tools. The piston 2 may. be urged upwardly by valve-controlled pneumatic pressure instead of a spring. According to the Provisional Specification a radial pin on the piston engages a slot in the valve and opens the latter when the foot 5 enters the recess in the slide 22.
Patent GB-347399-A (GB)
Title: Improvements relating to selective card cabinets
IPC: G06K21/02
Filed: 1930-03-08
Abstract: 347,399. Selecting index cards. INFALLIBLE CARD SELECTING CO., Ltd. and TAYLOR, E. W., 9, Pitsford Street, Birmingham. March 8, 1930, No. 7607. Addition to 281,949, [Class 106 (i), Calculating &c.]. [Class 106 (i).] A cabinet for filing and sorting index cards according to the parent Specification is provided with means for facilitating the inversion of the cabinet whereby the sorted card falls out. These means comprise annular offset rings 20, 21 attached to the cabinet 1 and mounted by rollers or balls 25 in stationary rings 22, 23, the latter being adjustably mounted for alignment by screws 41. A handwheel 34 is attached to the front 6 for rotating the cabinet. The card-sorting rods 5 with twisted ends 19 do not move axially but are rotated by hinged, slotted levers 18 actuated by keys 15 as in Specification 345,467. The housing 16, 17 for these keys is attached by four lugs and by screws 29 to four bosses 30, 30, 31, 31 on the cabinet front 6. For correct engagement the member 17 has projections 32, 33 taking into corresponding apertures in the front 6. Rubber-faced stops limit the rotation of the cabinet to 180‹.
Patent GB-1499137-A (GB)
Title: Process for producing silane
IPC: C01B33/04
Filed: 1975-02-24
Abstract: 1499137 SiH 4 ; chlorosilanes UNION CARBIDE CORP 24 Feb 1975 [25 Feb 1974] 7661/75 Heading C1A Silane (SiH 4 ) is prepared by (a) feeding HSiCl 3  into a bed comprising an insoluble, solid anion exchange resin containing amino groups; (b) maintaining the region of the bed into which is fed the HSiCl 3 , at a temperature sufficient to disproportionate the HSiCl 3  into vaporous products which rise in the bed, and into SiCl 4  which is condensed; (c) maintaining the temperature at the top of the bed above the boiling point of silane and below the boiling point of H 3 SiCl and (d) recovering silane from the bed. The process is a single-step one pass process.
Patent GB-772691-A (GB)
Title: Improvements in or relating to the manufacture of silicon carbide crystals
IPC: H01B1/04
Filed: 1955-03-16
Abstract: <PICT:0772691/III/1> Silicon carbide crystals are obtained by sublimation in an atmosphere of an inert gas in a chamber the wall of which is of silicon carbide.  A graphite cylinder 1 is lined with lumps of slicon carbide 2 and closed by a lump 3 of silicon carbide, and is arranged in a graphite cylinder 7 surrounded by a carbon furnace wall 17, through which an electric current is passed from electrodes 18.  The inert gas, which may be an inert rare gas, such as argon, or hydrogen or carbon monoxide, is introduced through a pipe 22 and surrounds and fills the cylinder 1.  The temperature in the furnace is maintained at around 2500 DEG C.  On cooling single crystals are removed from the inner wall of the silicon carbide lining.  Crystals having a n-type conductivity are obtained by introducing nitrogen, PCl3, PH3, AsCl3 or SbCl3, into the atmosphere of the furance, or Na3PO4 into the starting silicon carbide material; crystals having p-type conductivity are obtained by introducing AlCl3 or BCl3 into the furnace atmosphere, or Al2O3 into the starting material. Crystals having adjacent zones of different conductivity, e.g. p-n junctions, are obtained by adding impurities to the starting material and different impurities to the gas atmosphere, and causing the vapour pressures of the impurities to predominate alternately; or impurities may be added only to the gas atmosphere, which is changed for one containing different impurities after the crystals have grown for some time.  Examples of the process are described.
Patent GB-325406-A (GB)
Title: Improvements relating to spring gaiters for automobiles or the like
IPC: F16F1/24
Filed: 1929-03-09
Abstract: 325,406. Ramsden, H., and Ramsdens (Halifax), Ltd. March 9, 1929. Gaiters.-The meeting edges of a flexible gaiter enclosing a laminated vehicle-spring are secured together by metal straps J fixed on one edge and bent round the rod B secured to the opposed meeting edge, the straps being then turned back and held in position by bending metal tongues K down on to them. The edge of the gaiter to which the straps J are secured is stiffened by a longitudinal metal-insertion G<1> to which are secured the straps J and the tongues K by means of rivet H. The rod B is secured in the other edge of the gaiter by bending the leather &c. round it, the material being cut away at intervals. The pliable straps J may be made so long as to encircle the gaiter completely as shown at M before they are finally locked by the strips K.
Patent GB-1021790-A (GB)
Title: Improvements in cutting devices
IPC: B26D3/24
Filed: 1964-02-25
Abstract: 1,021,790. Cutting fruit. K. ECKERT. Feb. 25, 1964 [March 5, 1963], No. 7827/64. Heading A4C. A device for cutting apples, pears, tomatoes &c. into equal pieces comprises a plurality of blades 2 arranged radially on a hollow central shaft 1 provided with a handle 3, the blades 2 having teeth 6 with inner edges 7 extending parallel to the shaft 1 and the blade upper edges 9 being received towards the shaft 1 and extending upwardly to the handle 3. The handle 3 has a recess 8 in which seats the handle 5 of a needle 4 extending freely through the shaft 1 and serving to impale the whole fruit to be cut. In a further embodiment (Fig. 4 not shown), a T-shaped needle enters the shaft from beneath the blades. The device may be of moulded plastics.
Patent GB-723313-A (GB)
Title: Improvements in conveyors
Inventor: DUNCAN ANGUS WELLESLEY
IPC: B65G19/28
Filed: 1951-04-04
Abstract: 723,313. Endless conveyers. MINING ENGINEERING CO., Ltd. March 20, 1952 [April 4, 1951], No. 7836/51. Class 78 (1). A sectional conveyer comprises at each side two angle sections, one flange of each of which is vertical, which are connected together by interengaging pegs and recesses and spaced apart by blocks at each end of a section which define with the vertical flanges of the angle-section apertures for the reception of locking members for connecting adjacent sections of the structure together, and conveying trough sections attached to the side members by stud and slot connections. As shown, a conveyer section comprises a base structure consisting of inner angle members 2 secured to skid flats 1, a trough section 8 for the upper run of a scraper chain 9 and a pair of upper and outer angle members 12 having horizontal flanges extending inwardly over the scraper chain. In assembly, headed pegs 11 on the trough section are engaged in slots 4 in the angle members 2 to assemble the trough on the base frame, after which the angle members 12 are lowered into place, Z-shaped projections 17 on their vertical flanges sliding behind similar Z-shaped projections 5 on the vertical flanges of members 2. Goaf side plates 20 are secured to members 12. Adjacent sections are coupled by U-bolts 21 threaded between upper blocks 7 and lower blocks 16 located in the space between angles 2 and 12, a slot 15 being provided for insertion of the bolt. The troughs 8 either have an overlapping portion or alternatively consist of two troughs one within the other (not shown) and slid longitudinally relative to each other to provide a projecting lower part at one end and a projecting upper part at the other. Specification 723,401 is referred to.
Patent GB-938645-A (GB)
Title: Hydrocarbon polymer blends
IPC: C08L23/08
Filed: 1962-02-28
Abstract: A normally solid polypropylene of density 0,870-0,920 is blended with a normally solid ethylene copolymer of density 0,900-0,960 and prepared from ethylene and a terminally unsaturated hydrocarbon containing more than 3 carbon atoms.  The unsaturated hydrocarbon may comprise 0,1-50% of the copolymer and may contain 4-18 C atoms, e.g. 1-butene, 1-octene or 1-decene. The polypropylene may comprise 2-75% of the blend, e.g. 2-25% for use as a wire and cable coating resin or 25-50% for use as a foamed coating, e.g. using 0,75% of an azodicarbonamide.  The blend may have a melt index of 0,005-5,0.  The copolymer may be made by introducing the comonomer during the co-ordination polymerization of ethylene, i.e. using a co-ordination compound as catalyst, and the polypropylene may be prepared using a similar catalyst.
Patent GB-244694-A (GB)
Title: Improvement in mining machines
IPC: E21C29/10
Filed: 1925-03-24
Abstract: 244,694. Sullivan Machinery Co., (Assignees of Holmes, M. P.). Dec. 19, 1924, [Convention date]. Coal-cutting machines.-A mining- machine has a reversible driving means such as an electric motor and a feed operating member driven from the motor through change-speed gear housed in a longitudinal bore of the machine frame, a single set of guide members co-operating with the feed operating member. The guide members are arranged on vertical axes on each side of the feed operating member. The armature shaft 13 of an electric motor carries a gear 15, Fig. 8, adapted to be connected by an axially slidable internal gear 23 with a coaxial gear 22 on a short shaft 20 which then drives he cutter chain 5 through gearing 50, 49, 51, 52. The gear 23 is adjusted by a bell-crank lever 26 engaged by a member 37 which is moved transversely from either side of the machine by rotaion of one of the caps 34, 44 provided with pins 5, 45 engaging cam slots 36, 46. Fast and slow transmission gearing comprising friction clutches 5, 107, Fig. 3, is driven from a pinion 60 on the opposite end of the armature shaft, and drives a gear 86 which transmits motion to the feed sprockets 8; the clutches 75, 107 may be operated by rods with oppositely-threaded, halfround ends engaged by a common reverselythreaded nut which controls the rods. Specifications 197,970 and 233,365 are referred to.
Patent GB-791466-A (GB)
Title: Improvements in or relating to hydraulically-operated double-acting pushing jacks for the displacement of equipment, for example conveyors, in mineral workings
IPC: E21F13/08
Filed: 1956-03-16
Abstract: 791,466. Reciprocating pumps. WEBER, E. [trading as E. WEBER FABRIK HYDRAULISCHER APPARATE]. March 16, 1956 [March 17, 1955], No. 8394/56. Class 102(1). [Also in Group XXX] An hydraulic jack 1 is extended and contracted by an hydraulic pump 2 driven by a pneumatic motor 3, the pump and motor being secured one behind the other, to the rear of the jack. The pump has a double piston 22, 22a which is reciprocated by the piston 18 of the pneumatic motor 3 in low and high pressure cylinders 25, 25a, which are connected through non-return ball valves 26, 32 and a manual control valve 33 between a reservoir 23 and the working chambers in the jack cylinder 37. If the pressure in the cylinder 37 exceeds a predetermined value a valve 42 is automatically operated to byepass the fluid from the cylinder 25 back to the reservoir ; thus causing the jack to operate under the action of the high pressure stage of the pump only. In a modification, Fig. 7 (not shown), a separate auxiliary hand pump is provided in the pump body. In a further modification, Fig. 8, a single pump may be operated by either a handle 13 or the piston rod 55 of a transversely arranged pneumatic motor 3.
Patent GB-180123-A (GB)
Title: Improvements in boxes, cases or the like
IPC: A45C13/34
Filed: 1921-03-18
Abstract: 180,123. Synyer, H. March 18, 1921. Lids.-A box or case for eyeglasses, cigarettes, cards, &c., comprising a lid 3 hinged to the body 4, is retained in the fully opened, or the closed position by a plate spring 5, which is supported at its two ends by either lid or body, and engages with a cam or heel-piece carried by the other portion of the case. The width of the spring may be increased where it engages with the cam or heel-piece.
Patent GB-374541-A (GB)
Title: Improvements relating to iron and steel alloys
IPC: C22C38/12
Filed: 1931-03-19
Abstract: In a process for improving the properties of iron or steel either unalloyed or alloyed but containing at least 50 per cent of iron, one or more of the elements, tantalum mobium, cerium, and uranium are included in the iron &c. in a total amount of 0,1-8 per cent and the alloy so constituted is cooled quickly or slowly from the casting temperature or in the case of reheating the alloy, from 700-1300 DEG C. and then tempered at 150-800 DEG  C.  When the alloy has been reheated, the alloy may be subjected to a particularly slow cooling instead of tempering.  The alloy may also contain one or more of the elements silicon, manganese, nickel, chromium, tungsten, molybdenum, vanadium, and cobalt.  The process is particularly applicable to stainless chromium or nickel-chromium iron or steel alloys such as those containing 6-40 per cent of chromium, 25-0,5 per cent of nickel and up to 1 per cent of carbon.  Specification 29597/09, [Class 72, Iron &c.], is referred to.
Patent GB-403614-A (GB)
Title: Improvements in and relating to the production of cymene
IPC: C07C7/171
Filed: 1932-03-23
Abstract: Pure cymene is manufactured from turpentine by distilling, at a variable temperature depending on the boiling point of the turpentine employed, a mixture of the turpentine, an alkaline chloride, e.g. sodium or potassium chloride, or a mixture which will produce it in situ, e.g. calcium chloride and an alkali salt such as soda, and sulphuric acid, and thereafter submitting the distillate to a series of successive distillation and condensing operations, the distillate produced in a later stage being caused to pass over a suitable condensing body, e.g. zinc chloride, whereby the camphor is polymerized.  In an example, calcium chloride and soda, if desired with the addition of water, are introduced into a distillation apparatus where they produce sodium chloride by double decomposition, turpentine of boiling point 152--180 DEG  C. and sulphuric acid are added and the mixture is distilled.  The distillate is submitted to a series of distillations (e.g. three or four), and the product of the last distillation is passed over a condensing agent such as zinc chloride in order to polymerize the camphor present.  The calcium chloride and soda may be replaced by sodium chloride.  The final product is chemically pure cymene, whilst other valuable products, e.g. isobornyl acetate and limonene, may be isolated from the residues of the intermediate and later distillations.
Patent GB-214427-A (GB)
Title: Improvements in or relating to water-heaters
IPC: F24H1/20
Filed: 1923-03-27
Abstract: 214,427. Withers, J. S., (Bastian-Morley Co.). March 27, 1923. Heating water.-In boilers of the type having a tank 10 and a burner chamber 11 below in which also is situated a small water chamber 13 connected to the tank the water chamber is provided with an outlet 24 on its upper side and has formed integral with it a passage or passages 22 communicating at their lower ends with the bottom of the chamber. The inlet 21 to the chamber may be arranged concentrically round the outlet. The passages may be formed on the outside of the chamber and may be spiral in form. Specification 203,159 is referred to.
Patent GB-740441-A (GB)
Title: Method of welding polyethylene and like plastic materials
IPC: B29C65/00
Filed: 1950-04-06
Abstract: 740,441. Seaming non-metallic sheet material. CIBA LABORATORIES, Ltd., and BEDFORD, J. G. March 21, 1951 [April 6, 1950], No. 8747/50. Class 42 (1). Laminae of polyethylene or like plastic material are welded together by placing between temperature-controlled platens the marginal portions face to face, with their free edges uppermost and a space between their inner surfaces capable of being bridged on melting of the marginal portions, directing radiant heat downwardly on to the latter to cause a molten bead to build up along each portion until the beads unite to bridge the space between them, and controlling the temperature of the platen surfaces and their proximity to the outer surfaces of the marginal portions to retard the rate of cooling so as to permit the region of fusion to extend laterally on each side of the initial molten bridge before the joint solidifies. The spacing of the laminae may be produced by interposing between them, and below the marginal portions to be joined, a distance piece of similar material. As shown, a stationary platen 6 is mounted on supports 17 on which supports 19, carrying a movable platen 7, are pivoted. Both platens are hollow, and are maintained at a suitable temperature by the circulation of water through pipes 33, 34. The platen 7 may be moved towards the platen 6 by rotation of cams 21, which aie pivoted on fixed supports 23, by levers 24. A yoke 26 pivoted at 25 at the other end of the supports 23, carries a strip 16 of refractory insulating material to which is secured an electrically heated strip 15 of " Nichrome " (Registered Trade Mark) alloy. The yoke may be reciprocated, to bring the heater to and from its operative position, by a rod 32. The platens are separated by raising the lever 24 and the articles to be sealed, e.g. collapsible tubes are supported on a shelf 36 with the edges protruding slightly above the platens 6 and 7, which are then brought into close proximity with the work, preferably without actually touching it, by depressing the lever 24. The heater strip 15 is brought to full working temperature and brought down over the edges by mechanism operated by an electronic timing device which is brought into operation by the closing of a switch 39 by a lug 38 on the lever 24. After the appropriate melting period, the strip 15 is switched to low heat and returned to inoperative position, and, after a period of retarded cooling, the platen 7 is caused to approach the platen 6 to compress the welded joint, both operations being controlled by the timing mechanism, which, when the switch 40 is closed during the latter operation, returns the platen 7 to its starting position, opening switches 39 and 40. The platens may take the form of oppositely disposed rollers, wheels or endlessbands between which the edges of the laminae are fed ; the opposed surfaces may move continuously, or their direction of movement may alternate, to receive and discharge the material.
Patent GB-1151452-A (GB)
Title: Method of manufacturing Electrical Capacitors
Inventor: COOK RONALD JOHN
IPC: H01G4/248
Filed: 1967-02-24
Abstract: 1,151,452. Capacitors. LONDON ELECTRICAL MFG. CO. Ltd. 7 Feb., 1968 [24 Feb., 1967], No. 8850/67. Heading H1M. In the manufacture of a capacitor an insulating plate 11 is provided with metal edge strips 12 to act as electrical connections, and the separately produced, relatively fragile mica or ceramic capacitor is attached to the edge strips. Connecting wires 14 may be welded to the edge strips. Alternatively the wires and edge strips may be integral (Figs. 6 and 7, not shown). The capacitor may be soldered to the edge strips and for this purpose preferably has metallized marginal areas. Plate 11, which may be of mica, may support two capacitors, one on each side. The structure may be encapsulated in synthetic plastics by dipping or moulding.
Patent GB-711723-A (GB)
Title: Improvements in or relating to the manufacture of transfer paper and transfers
IPC: B44C1/16
Filed: 1952-04-07
Abstract: 711,723. Transfers. COLOUR WORKS, Ltd., R. S., and CHANDRA, S. G. April 7, 1952, No. 8855/52. Class 100 (2) Transfers are made by coating with a cellulose nitrate or cellulose acetate solution, by the silk screen process, each individual area of the gummed surface of a backing paper, which is to be occupied by a transfer, this coating being restricted to the individual areas while the remainder of the gummed surface remains uncoated, and printing each transfer on the backing paper in register with the corresponding individual coated area. Such transfers are particularly for use in the decoration of heat-resisting bases. U.S.A. Specification 1,900,048 is referred to.