baber/WOPTO huggingface dataset:
Patent GB-442415-A (GB)
Title: Improvements in or relating to moving stairways
IPC: B66B29/06
Filed: 1935-08-29
Abstract: 442,415. Moving stairways. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.-(Assignees of Dunlop, J. ; 1517, Crescent Avenue, Park Ridge, Illinois, U.S.A.) Aug. 29, 1935, No. 24147. Convention date, Sept. 13, 1934. [Class 78 (i)] The comb-plate for a moving stairway is maintained by gravity in a supporting framework in correct position relatively to the grooved steps of the stairway. The plate which comprises a comb portion 42 and a base portion 41, Fig. 1, rests in a frame 53, Fig. 3, and is supported in its horizontal position by a pair of adjusting bolts 61, the heads of the bolts resting on arms 51, 52 of the frame 53. The comb-plate is prevented from moving towards the stairway by depending lugs 69 engaging behind lugs 66, 67 on the frame. The comb 42 is in three sections each of which at the rear has a dove-tail formation 44 to engage a corresponding groove 45 in the front of the base portion 41. The comb 42 is secured to the base by screws 49, so that one or more of the comb sections may be replaced in the event of broken teeth &c. A pair of rigging bolts 71, the heads 73 of which rest on the arms of the frame 53, are provided to enable the comb-plate to be lifted bodily out of the frame. The frame 53 rests on beams 1, 2 and has a riser 54 against which flooring material 55 supported on a plate 56 abuts. The stairway steps comprises treads 13 with parallel cleats 19 to provide grooves co-operating with the teeth of the comb-plate. The steps are provided with leading wheels 20 and trailer wheels 11 running respectively on rails 9, 5, a guard rail 10 being provided. The axles 21 of the wheels 20 extend through a gear chain 22 driven by a sprocket wheel 23, the shaft 24 of which is driven from an electric motor 31 through a countershaft 32, reduction gearing 33 and a chain 34. A spring applied brake having an electromagnetic releasing device 36 stops the stairway when the motor circuit is opened. When the comb-plate is in correct position, an aperture 91 in its underside receives the end of a pivoted switch lever 90 which holds closed against the action of a spring 87 a pair of contacts 85, 86 of a safety switch 83 in the circuit of the motor 31. Should some object be caught between the stairway and the comb-plate, the plate is moved back and is raised by rollers 75 engaging an incline 77 on the frame 53. This allows the spring 87 to push up the switch arm 90, which is slotted at its pivot and open the contacts 85, 86 thereby stopping the motor 31 and the stairway.
Patent GB-1513271-A (GB)
Title: Magnetic recording systems
IPC: G11B5/03
Filed: 1975-06-05
Abstract: 1513271 Multi-track magnetic heads MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 5 June 1975 [5 June 1974 (5)] 24275/75 Heading G5R In a multitrack magnetic head assembly on a substrate 25, Fig. 7, each head has a linear transducing gap defined between spaced apart portions of a planar first magnetic layer, such as substrate 25, and a second magnetic layer, 30 and has a first 28 and a second 29 electrical conductor between said magnetic layers 25, 30, with each conductor 28, 29 extending in the length direction of the corresponding transducing gap, conductor 28 being connected to a bias current source and conductor 29 being connected to a signal current source. The assembly may be formed by depositing a first magnetic layer (21), Figs. 4-6 (not shown), for each head on a substrate (17), a conductive layer (18) on the layers (21) to form a common first conductor extending through each head, a conductive layer (19) on to layer (18) to form single-loop second conductors for each head, and a second magnetic layer (22) on to layer (19) and exposed parts of layers (21). The conductors (18), (19) may be located in the transducing gaps or separate non-magnetic gap-fillers (24), Fig. 6, may be provided. Deposition of the various layers in the form of thin films may be by plating or vapour deposition, the magnetic layers may be of permalloy, sendust or ferrite and intermediate insulating layers of SiO or SiO 2  may be provided where necessary. In an alternative form, Fig. 7, a common magnetic substrate 25 has deposited thereon insulating layers 26, 26a, 26b, single-loop second conductors 27, one for each head, a first conductor 28 common to all heads and magnetic layers 30. Multitrack recordings are made with such heads using a common bias current source connected to the common first conductor. To enable higher bias than singal currents to be supplied, the cross-sectional area of the first conductor may be greater, e.g. in excess of five times, the cross-sectional area of each second conductor, e.g. by providing co-planar, equal-thickness first 34 and second 33 conductors of different widths, Fig. 8a, or by other arrangements, Figs. 8b, 8c (not shown). To reduce cross-talk between adjacent heads of the assembly bias current from a source 139, Fig. 12, may be supplied via an amplifier 137 to the series-connected first conductors 134 of odd numbered heads, and via an amplifier 138 to the series-connected first conductors of even numbered heads, the outputs of amplifiers 137, 138 being 180 degrees out of phase with one another, or the first conductors of all heads may be connected in one series chain but arranged so that the bias-current-produced flux across the gaps of odd numbered heads is in the opposite direction to that of the even numbered heads, Figs. 13, 14 (not shown).
Patent GB-1483680-A (GB)
Title: Sulphamide derivatives containing phosphorus and a process for making them
IPC: C08J9/00
Filed: 1975-06-05
Abstract: 1483680 Flame-retardant polyurethane foams HOECHST AG 5 June 1975 [5 July 1974] 24281/75 Heading C3R [Also in Division C2] Polyurethane foams are rendered flameretardant by incorporating in the foam-forming mixture a phosphonate ester derivative of the formula in which R, is an optionally halo-substituted C 1 -C 6  alkyl radical or is an aryl radical and R 2 , R 3  and R 4  are selected from H, -CH 2 OH and -CH 2 P(O)(OR 1 ) 2  where R 1  is as defined above. An example is given in which the foam forming mixture comprises a branched polyether polyol (based on propylene oxide), toluylene diisocyanate, a compound of the formula water, triethylene diamine, tin (II) octoate and a polydimethylsiloxane block copolymer.
Patent GB-1385263-A (GB)
Title: Method for producing high-purity nickel from nickel matte
IPC: C22B23/00
Filed: 1972-05-23
Abstract: 1385263 High purity nickel with cobalt and iron recovery LE NICKEL 23 May 1972 [24 May 1971] 24283/72 Heading C1A [Also in Division C7]  High purity nickel is produced from nickel matte by the following steps:- (1) comminuting said matte and roasting at 900C. to obtain nickel oxide; (ii) dissolving this impure nickel oxide in concentrated hydrochloric acid to give a concentration of 6-99 ions i.e. of chloride ions; (iii) oxidizing iron in the solution to the ferric state by reaction with hydrogen peroxide or gaseous chlorine; (iv) removing impurities by means of an ion exchange resin and an elution step to recover cobalt values and remove iron values; (v) electrolysis of the purified solution to recover high purity nickel. The elution may be carried out in different ways by washing with different strengths of hydrochloric acid, and chlorine released on electrolysis is reacted with hydrogen to form hydrochloric acid which can be used to dissolve the impure nickel oxide.
Patent GB-862118-A (GB)
Title: Improvements in or relating to blood collection method and apparatus
IPC: A61M1/02
Filed: 1957-07-31
Abstract: 862,118. Valves. FENWAL LABORATORIES Inc. July 31, 1957 [Aug. 3, 1956], No. 24285/57. Class 135. [Also in Groups VI and XVII] In apparatus for filling a collapsible container with a liquid and comprising a cylinder 21 which is evacuated so that liquid flows into the container placed therein (see Groups VI and XXIX) a tube T connecting the container with a source of liquid is secured in a hole in the cylinder wall when the cylinder door 23 is closed. Before the door is closed, the tube T is pinched between a clamp block 50 and an extension of a valve block 44. Closing of the door pivots the block 50 so that the tube T is freed and a valve stem 47 in the valve block 44 is shifted against a spring 48 thus establishing communication between passages 45a, 45b in the valve block which are connected with a vacuum pump and a nipple in the cylinder, respectively, so that the cylinder may be evacuated. A small amount of air enters the cylinder through a bleed passage. When the container is full its upper wall occludes the nipple so that evacuation ceases and air entering the bleed passage causes a rise in pressure in the cylinder which permits the cylinder door to be pushed open by the spring-urged valve stem 47 through the intermediary of the clamp block 50. Thus communication between the vacuum pump and the cylinder is blocked and the tube T is again pinched between the block 50 and the valve block extension 49. Reference has been directed by the Comptroller to Specification 771,582.
Patent GB-691696-A (GB)
Title: Improvements relating to hypodermic injection apparatus
Inventor: MAY EDWIN ANTHONY
IPC: A61M5/30
Filed: 1950-10-05
Abstract: 691,696. Hypodermic injection apparatus. BECTON DICKINSON & CO. Oct. 5, 1950, No. 24356/50. Class 81 (ii). A needleless hypodermic injection device is provided with an accumulator the pressure of which may be increased by a manual leverage means, connection means being interposed beween the medicament receiving chamber and the accumulator so that on release of energy by the accumulator medicament is discharged and additional means forming part of the apparatus being provided for varying the pressure of the accumulator. The device consists of a handle 5 across one end of which is secured a head piece 7. The handle 5 contains an accumulator spring 25 which bears against a cap 26. The other end of the spring 25 bears against a piston 29 above which is a valve chamber 12. The head piece 7 is provided with two bores 8, 9, separated by a partition 10. One bore contains a piston 35 the position of which may be adjusted by rotation of an extension 39 projecting outside the head piece 7. The bore 9 is connected with the valve chamber 12 by a passage 11. A rubber sac 20 in the other bore 8 is charged with medicament which may be contained within a collapsable capsule 21 made of metal foil, gelatine or synthetic resin, the 'capsule being held in position by a cap 22 beyond which a nozzle 23 extends. The bores 8, 9, the valve chamber 12 and the space above the piston 29 are filled with liquid. In order to make an injection, the piston extension 39 is screwed into the bore 9 until a graduation on its stem corresponding to the volume of medicament to be injected coincides with the surface of the part 41 of the casing. Liquid displaced from the bore 9 passes into the valve chamber 12 and the space above the piston 29. The accumulator spring 25 is then compressed by rotation of the cap 26 to a suitable graduation 43 on the handle 5. On operating a trigger 6 a stem 18 is depressed opening a valve 13. Liquid is then forced by the accumulator from the space above the piston 29 into the bore 8 through channels 19 in the stem 18 so that medicament is discharged from the capsule 21. A cam 44 is provided on the head piece 7 underlying the trigger 6 to prevent inadvertent operation of the trigger.
Patent GB-956963-A (GB)
Title: Improvements in or relating to earthing devices for electrical accessories, appliances and apparatus
Inventor: HARGREAVES BRIAN
IPC: H01R4/64
Filed: 1959-07-17
Abstract: 956,963. Earthing parts of switches; twopart couplings. ASHLEY ACCESSORIES Ltd. July 14, 1960 [July 17, 1959], No. 24550/59. Headings H2B and H2E. The invention relates to earthing arrangements in electrical accessories in which a securing device holding two parts together form part of an earthing connection. In the single embodiment described the sockets, shutter mechanism &c. of a switched wall socket are housed in a moulded cover 10 (a small part of which is shown in Fig. 2) which is secured to its metal wall box (not shown) by a screw 14 which passes through the eye of an earthing strip 13 projecting through a slot in the side wall 10a of a hole in the cover. When the cover and box are tightened together the head of the screw clamps down on the eye of the earthing strip either directly, as shown, or through washers and completes the electrical connection between the wall box and an earth terminal in the cover. It is stated that when making the moulded cover the slot in the wall of the hole is obtained by arranging for the top and bottom faces of the moulding tool to be coincident except at this point so that a thin flash is formed which may be readily broken out.
Patent GB-817589-A (GB)
Title: Improvements relating to collapsible gates, shutters and the like
IPC: E06B3/48
Filed: 1957-08-02
Abstract: 817,589. Doors. COLEMAN, F. G., and POTTER RAX Ltd. Aug 2, 1957, No. 24591/57. Class 20(3) In a collapsible gate, shutter &c. of the kind comprising shutter plates or panels 1 which are pivotally secured together at their adjacent longitudinal edges by means of longitudinally-extending channelled connecting members 2 so that the plates 1 may be extended to closed position and collapsed therefrom to open position by folding them together alternately back to back and face to face, accordion-wise, alternate connecting members 2 being secured to pickets 4 as by means 5 each connecting member 2 secured to a picket and the edge portions of the plates 1 housed in each such connecting member are provided with aligned slots and means such as plates 7, 7<SP>1</SP> with lugs 6, 6<SP>1</SP> supported by the picket at 9 extend into the slots to support the weight of the plates 1 at points intermediate their ends.
Patent GB-355936-A (GB)
Title: Improvements in machines for sorting or cleaning raw cotton prior to ginning
IPC: D01G9/14
Filed: 1930-08-18
Abstract: 355,936. Sifting apparatus. SOC. ALSACIENNE DE CONSTRUCTIONS MECANIQUES, Mulhouse, Haut-Rhin, France.-(Assignees of Mieg, C. ; Mulhouse, Haut-Rhin, France.) Aug. 18, 1930, No. 24663. Convention date, Feb. 5. [Class 117.] The rotating drum 1 enclosing the beater in the apparatus for sorting and cleaning raw cotton prior to ginning described in Specification 355,855, [Group IX], is provided with two series of independent grating bars 2, 3 adapted to be set at different spacings. The wooden bars 2, 3 are fixed in metal strips 4 as described in Specification 355,934, the bars 2 being of uniform section throughout, the bars 3 being of greater section over the part 5 near the inlet for the cotton bolls. The casing 6 formed with a hopper 7 is divided by a plate 8, sand, stalks, leaves and other small impurities being removed through the part 5 of the bars 3 and collected in the part 10 of the hopper 7.
Patent GB-721135-A (GB)
Title: Improvements in and relating to electrically heated heating units for ranges
IPC: F24C15/10
Filed: 1953-09-08
Abstract: 721,135. Hinges. GENERAL ELECTRIC CO. Sept: 8, 1953 [Sept. 9, 1952], No. 24829/53. Class 65 (2): [Also in Group XI] A hot-plate 3 is movably located in an opening of the top 1 of an electric cooker by a hinge link 15 one end of which is pivoted by a hinge pin 14 to a bracket 13 rivetted or welded to a flange 4 of the cooker top 1, the other end of the link 15 being pivoted by a hinge pin 16 to a bracket 17 attached to the sheaths 11 of the hot-plate where it is bent down below the cooker top, so arranged that the link 15 is normally substantially vertical and allows the hot-plate to be pivoted up and moved laterally. The terminal part 11 of the heater is bent down and outwardly beyond the area of the opening and may be connected to a terminal block on a flange 18 formed as an integral part of the bracket 17. A flexible earthing strap 20 is welded at one end to a projection 21 of the bracket 13 and at the other end of a projection 19 on the bracket 18.
Patent GB-1102560-A (GB)
Title: Cleaning and polishing agent for dental prophylaxis-zirconium silicate
IPC: C01B33/20
Filed: 1965-06-11
Abstract: Zirconium silicate particles mixed in three distinct size ranges, namely (I) up to 20 m , (II) 20 m -50 m  and (III) over 50 m  wherein not more than 2% by wt. are over 70 m  form the essential ingredient in dental prophylaxis compositions. Preferably, the zirconium silicate particles have a rough surface produced by hammer milling attrition and the mixture comprises 10-50% by wt. in range I, 5-25% in range III, and the balance in range II, not more than 25% being less than 10 m .ALSO:A dental prophylaxis composition comprises as its essential ingredient zirconium silicate which is a mixture of particles in three distinct size ranges, namely (I) up to 20m , (II) 20m -50m  and (III) over 50m  wherein not more than 2% by wt. are over 70m . Preferably the particles have a rough surface produced by hammer milling attrition and the mixture comprises 10-15% by wt. in range I, 5-25% in range III and the balance in range II, not more than 25% being less than 10m .  Generally the zirconium silicate is used in the form of an aqueous slurry containing 15-25 parts by weight of water per 100 parts zirconium silicate powder in a conventional prophylaxis composition.
Patent GB-1190391-A (GB)
Title: Improved Hydraulic Tilting Device and Method of Actuating Same
IPC: B21B39/22
Filed: 1967-05-30
Abstract: 1,190,391. Hydraulic actuators. COCKERILLOUGREE-PROVIDENCE. May 30, 1967 [June 16, 1966], No.24914/67. Heading F1P. A loaded ingot-holding cradle 1 Fig. 1 is tilted anti-clockwise and beyond its over-centre position about two lateral horizontal pivots 2, on a fixed frame 5 Fig. 3 by retraction of a hydraulic jack 11b pivoted at 12d to frame 5 and connected by its rod 10, a lever 9, a link 8 and an arm 7 to the cradle 1 and supplied with pressurized oil from the oil space 13c of a gas/oil accumulator 13 through a line 14, 156 a change-over solenoid valve 16b when in its lower energized position and a line 17b until when the cradle passes the overcentre position and the valve 16b is automatically de-energized contraction of the jack 11b is continued by the gravity effect of the descending cradle whereby oil is forced from the rear end of the jack through a check valve 22b and valve 16b into the accumulator space, 13c thereby re-pressurizing the gas e. g. nitrogen in space 13a. The ingot 3 having been removed from the cradle 1 on to transport rollers 24, the cradle 1 is tilted clockwise beyond its over-centre position by extension of a second hydraulic jack 11a which during the above mentioned anticlockwise tilting movement was vented at both ends to a reservoir 20. The rear end of jack 11a is supplied from accumulator space 13c through a line 15a, the solenoid valve 16a when in its lower energized position and a line 18a, whilst the rod end of the jack is connected to reservoir 20 through a check valve 22a, a throttle valve 21a, a line 17a, valve 16a and line 19a. At the over-centre position valve 16a is automatically de-energized and during the continued extension of jack 11a by the cradle now tilting under gravity oil is forced from the rod and of the jack through valves 22a, 21a, 16a, and lines 15a, 14 to the oil space 13c of accumulater 13 thereby re-compressing nitrogen therein. During the whole of the clockwise tilting movement of cradle 1 both ends of jack 11b are connected to reservoir 20.
Patent GB-843140-A (GB)
Title: Sealing and shockproofing member for watchcases
Inventor: RISELEY CECIL EDWARD
IPC: G04B37/11
Filed: 1957-08-08
Abstract: 843,140. Watches. WATCHCASES PTY. Ltd. July 2, 1958 [Aug. 8, 1957], No. 24973/57. Class 139 In a watch the resilient plastic movement supporting ring 1, Fig. 4, has a flange 2 which is clamped between the case bottom 3 and the caseband 7. A curved gap 11, Fig. 1, in the inner wall of the ring 1 accommodates a projecting part of the balance or barrel.
Patent GB-741731-A (GB)
Title: Improvements in or relating to power-operated stapling machines
Inventor: KINGSBURY HENRY EDMUND ROLAND
IPC: B27F7/19
Filed: 1952-10-06
Abstract: 741,731. Stapling. KINGSBURY COMPONENTS, Ltd., and KINGSBURY, H. E. R. Jan. 6, 1954 [Oct. 6, 1952], No. 25033/52. Class 89 (3). In a stapling apparatus in which a hand or other stapling machine 5 is operated by the core 13 of a solenoid 14, the solenoid and the base 6 on which the anvil 29 is supported are mounted for relative movement against a resilient opposing force to allow continued movement of the core 13 after the stapling operation is completed so as to open a switch 18 in the solenoid circuit. As shown, a hand stapler 5 is mounted on a resilient platform 6 supported at its front end by a spring 17, and the switch 18 is closed when work is inserted in the device through resiliently mounted arms 28 carrying a ball 33 which is movable to allow the switch to be opened before the platform 6 is returned to its raised position. In a modification, the platform is rigid and the solenoid is carried by a spring-pressed pivoted lever. The Provisional Specification describes a construction which is further modified in detail.
Patent GB-445268-A (GB)
Title: Improvements in or relating to the refining of copper
IPC: C22B15/00
Filed: 1934-08-31
Abstract: 445,268. Casting -machines. MOND, A. L., 19, Southampton Buildings, Chancery Lane, London.-(Soc. GÚnÚrale Metallurgique de Hoboken; Hoboken-les-Anvers, Belgium) Aug. 31, 1934, No. 25055. [Class 83 (i)] [See also Groups II and XII] Metal pouring.-Electrolytically produced copper is melted in a reducing or neutral atmosphere in an electric furnace which rotates or oscillates about its source of heat k, the molten copper being transferred from said furnace to a casting mould whilst protecting it from oxidation by surrounding the jet of metal with a non-oxidizing or deoxidizing gas. A furnace for carrying out the treatment comprises a shell c having a refractory lining a, rollers d for tilting the furnace and a flexible connection e between the outlet a box f surrounding said outlet and the inlet to a casting mould g. The furnace may be tiltable about a shaft s and for this purpose may be provided with a detachable cable n carrying a counterweight p. Neutral or reducing gas is continuously supplied. According to the Provisional Specification, the copper may be melted in the presence of a reducing agent such as charcoal.
Patent GB-492924-A (GB)
Title: Improvements in or relating to handles for hand grenades
IPC: F42B27/08
Filed: 1937-09-15
Abstract: 492,924. Moulding grenade handles. ERDMANN, G., and FRANK, H. Sept. 15, 1937, No. 25061. [Class 87 (ii)] [Also in Group XXI] Relates to grenade handles comprising a tubular handle part, a member for attaching the tubular part to the grenade body, and a closing cap for the outer end of the tubular part. According to the invention, these parts are made of artificial resin. The tubular part, Fig. 2, is formed by forcing dies from opposite ends into a heated mass in a mould with reinforcing insertions, and subsequently punching out the thin partition left between the ends of the dies. The connecting member, Fig. 1, is moulded in one piece with a screw thread for attachment to the grenade body and a socket 4, which is subsequently welded to the end of the tubular part. Fig. 2. The closing cap, Fig. 3, is similarly pressed in one piece with a screw thread for attachment to the outer end of the tubular part. In a modification, the tubular part may be made up of layers of paste-board or paper impregnated with artificial resin, which may be strengthened by layers of fabric impregnated with artificial resin.
Patent GB-164270-A (GB)
Title: Improved apparatus for washing or separating ores
IPC: B03B5/62
Filed: 1920-08-31
Abstract: 164,270. Whitworth, M. Aug. 31, 1920. Inclined-trough washing-apparatus; jigs.-Ore and water are passed down an inclined trough A the bottom D of which is formed with backwardlyinclined perforations through which water is admitted to the trough intermittently from tanks B. The tailings pass off with the water while the concentrates settle on the bottom D and may be collected against a transverse board placed across the trough.