baber/WOPTO huggingface dataset:
Patent GB-812233-A (GB)
Title: Anamorphotic supplementary lens system
IPC: G02B13/08
Filed: 1957-04-01
Abstract: 812,233. Optical systems. ZEISS-STIFTUNG, C., [trading as ZEISS, C. [Firm of]]. April 1, 1957 [May 11, 1956], No. 10505/57. Class 97(1) In an afocal anamorphotic supplementary lens system to be used with an objective and formed as a Galilean telescope of a positive and a negative system part air spaced apart and with parallel cylinder axes, either one of the system parts has a thickness at least equal to one half of the numerical value of the focal length of the system part of shorter focal length, or a member having such a thickness is located in the airspace between the system parts. By this means the image , corrections are improved. Numerical data are given for one example of the system shown in which a plane parallel member K of the necessary thickness is placed between a positive cylindrical system part LI, LII adjacent the objective O and the negative system part LIII, LIV and LV. Numerical data are also given for one example in which the member K is omitted and the thickness of the element LII increased to give the positive system part the desired thickness.
Patent GB-549134-A (GB)
Title: Improvements in hydraulic mechanism for the operation of tractor-drawn agricultural implements
IPC: A01B63/10
Filed: 1941-08-19
Abstract: 549,134. Agricultural implements. BROWN TRACTORS, Ltd., D., MERRITT, H. E., and HULL, C. H. Aug. 19, 1941, No. 10525. [Class 6 (i)] [Also in Group XXIX] In a hydraulic mechanism for raising and lowering tractor-drawn agricultural implements, the control of the pressure liquid led from a supply pump to a pipe a is effected by a piston valve c which is raised to the position shown against the action of a spring t by means of a lever p connected by a Bowden wire o, lever n, and link m to the valve spindle c<SP>3</SP>. A spring-catch s holds the spindle c<SP>3</SP> in raised position. The pressure liquid then passes through a non- return valve e to the cylinder f and raises the piston g which is connected by a link g<SP>1</SP> and lever h to the shaft h' controlling the position of the implement. When this reaches the required position an arm h<SP>2</SP> releases the catch s and the valve c descends under spring action and connects pipe a to the exhaust pipe i thus permitting the pump to run light. The valve still closes a pipe connected to the cylinder f so that the pressure is maintained in the cylinder f at a value which does not exceed the pressure at which a relief valve k opens. The position of valve c is controlled by the engagement of the lever p with a stop r<SP>1</SP>. The lever p is made of flexible material and can be moved past the stop r<SP>1</SP> by flexing it and so opening up the pipe to permit the implement to fall at a controlled speed. Should the operator not release the handle p when the implement is fully raised, excess movement of the shaft h<SP>1</SP> causes an arm u to engage a projection v on the valve spindle and to depress it so as to relieve the pressure.
Patent GB-265818-A (GB)
Title: An apparatus for sinking bridge piers or the like
IPC: E02D27/18
Filed: 1926-04-21
Abstract: 265,818. Hara, S. April 21, 1926. Endless-chain machines for excavating the earth from within bridge piers to sink the latter comprise a base frame 2 to be laid on the pier 36, the frame carrying columns 1 provided with vertical guides on which slides a frame comprising side beams 4 which adjustably supports the bucket chain. The vertical movement is-effected by screws 3 which are driven by worm gearing actuated by chains 31 from lower shafts connected by a shaft 32, one of the lower shafts being driven by a belt 33. The ladder 7 of the bucket chain is extensible, being formed of lengths connected by couplings 8, and is suspended from a screw 6 carried by the beams 4 which also support a polygonal shaft 5 slidably supporting and driving the upper tumbler 10 which drives the bucket chain, members 13 on each side of the tumbler having forked ends 14 engaging the ends of the bucket ladder and the screw 6, the latter being rotated by a hand wheel 15 to move the bucket chain and ladder laterally. The bucket chain is driven by a belt 34 and gearing 35 and delivers spoil to a shoot 18, 18<1>; the tumber 10 has on alternate surfaces projections 17 with one face formed as a trough to guide the spoil. The lower part of the bucket ladder has an attached frame 19 connected by cables 20, 20<1> oppositely wound on drums 21, 21<1> which are simultaneously driven by a hand chain 26 and worm gearing to pivot the bucket ladder about the screw 6.
Patent GB-293911-A (GB)
Title: Improvements in or relating to telephonic or like receiving devices
IPC: H04R1/10
Filed: 1927-04-20
Abstract: 293,911. Lacy, H. K. de. April 20, 1927. Supporting. - Relates to cushions having telephonic &c. receivers embedded therein and consists in either supporting the telephonic or other sound emitting device 1 midway between the walls of the cushion by rubber or fabric thongs 11 as shown in Fig 1, or mounting it on the fabric of the side wall 18 of the cushion, as shown in Fig. 3. The receiver shown in Fig. 1 is doublesided. The cushion, which may be stuffed with hair, pieces of spongy rubber, kapok &c. or in the form of an inflatable air cushion, may be provided with a detachable fabric cover 15 and with hooks 16 either for suspending the cushion or for looping up the leads 13. Fig. 4 shows a modification in which a horn 19 having its mouth covered by a perforated diaphragm 22 is enclosed in a cushion 20. The horn is connected by a flexible tube 23 to a sound emitting device, such as a gramophone soundbox or a chamber surrounding a telephone receiver.
Patent GB-105872-A (GB)
IPC: B42D9/08
Abstract: 105,872. Jemison, A. J. Nov. 17, 1916. Leaf-turners.-Music leaf-turning arms are fixed to pinions turned by spring- operated racks released in succession by hand-operated control levers. The control levers 13 are linked to spring-arms 11 having upwardly-projecting pins to raise spring catches 16 out of engagement with the spring-operated racks 7. The pinions 4 carrying the leaf-turning arms 5 are mounted in the compartments of a casing 2 on the supporting plate 1. The leaf clips 19 are adjustable along the leaf-turning arms which are square in cross-section.
Patent GB-1027957-A (GB)
Title: Improvements in and relating to methods and devices for rounding off by fire-polishing an edge of a glass object
IPC: C03B29/06
Filed: 1965-03-12
Abstract: The rim of an open end of a glass tube is rounded off by passing combustible gas through the tube and burning it, the burning gases being deflected so that they emerge from the tube transversely of the tube axis about the whole periphery of the rim.  In the Figure, rotating drum 1 carries glass tube 7 in socket 5.  At <PICT:1027957/C1/1> stations 11 and 13 gas from tubes 15 and 19 in stationary drum 17 passes through the glass tubes and the burning gases are deflected by baffles 11 and 13.  The tubes may be cleared by air before or after, as through tube 31.
Patent GB-477744-A (GB)
Title: Process for the manufacture of alkali metal and magnesium salts
IPC: C01F5/00
Filed: 1937-04-14
Abstract: Alkali bicarbonates are obtained by dissolving magnesium oxide in water charged with carbonic acid gas under pressure and passing the solution over a sodium or potassium zeolite. Regeneration of the zeolite with a solution of an alkali chlorate or sulphate yields a solution of magnesium chlorate or sulphate.
Patent GB-768767-A (GB)
Title: Method and apparatus for density control
IPC: G06F3/153
Filed: 1955-04-13
Abstract: 768,767. Automatic density control systems. QUEEN'S UNIVERSITY. April 13, 1955 [May 20, 1954], No. 10595/55. Class 38 (4). To control the density of a liquid, a sample stream is continually passed through a control chamber in which its temperature is controlled to maintain its density constant, the temperature variations being measured and used to adjust the density of the main part of the liquid. In the embodiment described the sample stream is led from conduit 10 to the top of the control chamber 1 through a coil 13 immersed in boiling liquid 3a in the lower part of a surrounding chamber 2, containing an electric heater 3. The sample stream leaves the lower end of chamber 1 through conduit 14 and the level-control device 15. The vapour of the boiling liquid in chamber 2 is condensed in condenser 18 and returned to the chamber 2. The density of liquid in the chamber 1 is indicated by the position of a floating bob 5 which sinks when the density decreases, to allow light from a source 19 to energize a photo-cell 20. The current in cell 20 is caused to operate an amplifier and relay 22 to actuate a vacuum pump 21 connected to the space above the boiling liquid 3a, by a pipe 23, through the condenser 18. The lowered pressure causes the temperature of the liquid 3a to fall and hence that of the sample liquid in chamber 1. The resulting increase in density causes the bob 5 to rise and cut off the light falling on cell 20 so that the pump 21 is shut down. A thermocouple 7 immersed in the sample liquid actuates a potentiometer &c. 8 connected to effect the required density control in the main part of the liquid. Alternatively, movement of the bob 5 may be used to vary an inductance or capacity to operate the relay, Figs. 3 and 4 (not shown).
Patent GB-729617-A (GB)
Title: Process for the synthesis of chloramphenicol
Filed: 1951-12-04
Abstract: Chloramphenicol is prepared by esterifying racemic b -phenylserine to racemic threo-b -phenylserine cyclohexyl ester; resolving the ester by combination with an optically active acid and fractional crystallization; reducing the dextrorotatory form (L-three-b -phenyl serine cyclohexyl ester) in an organic solvent by a method known to be capable of reducing the carbalkoxy group to carbinol to give D-threo-1-phenyl - 2 - amino - 1 : 3 - propanediol; 0 : 0-bisdichloroacetylation of this in an anhydrous solvent free from alcoholic and basic groups preferably dichloroacetic acid acidified with a solution of hydrochloric acid in the same type of solvent, dichloroacetylating with dichloroacetyl chloride at a temperature below 35 DEG  C. to produce the desired 0 : 0-bisdichloroacetyl hydrochloride; nitrating at below 0 DEG  C. to give the p-nitrophenyl derivative, and alkalizing to effect migration of one dichloroacetyl group from the O to the N position while saponifying the other to give D-threo-1-p-nitrophenyl-2-dichloroacetamido - 1 : 3 - propanediol (chloramphenicol).  An alternative procedure comprises esterification of b -phenylserine to the cyclohexyl ester, resolution into optical isomers and reduction as in the above method to give D-threo - 1 - phenyl - 2 - amino - 1 : 3 - propanediol; 0 : 0-diacetylation of this with acetyl chloride at a temperatre below 35 DEG  C. in a solvent free from alcoholic or basic groups which is acidified with a solution of hydrochloric acid in a solvent of the same type to give the 0 : 0-diacetyl hydrochloride; nitration of this at a temperature below 0 DEG  C. to obtain the corresponding nitrophenyl compound; alkalizing to a pH between 7 and 8 to cause migration of an acetyl group to give D-threo-1-p-nitrophenyl-2-acetamido - 3 - acetoxy propan -1-ol; saponifying to give D-threo-1-p-nitrophenyl-2-amino-1 : 3-propanediol hydrochloride; treating this with dichloroacetyl chloride in dichloroacetic acid saturated with hydrochloric acid to give the 0 : 0-biodichloroacetyl hydrochloride and alkalizing to a pH higher than 7 to cause migration of a dichloroacetyl group from O to N with contemporaneous saponification to give the desired D - threo - 1 - p - nitrophenyl - 2 - dichloroacetamido p  - 1 : 3 - propane diol. Examples are given.  Specifications 687,214, 707,571, 715,122, 715,123 and 715,128 are referred to.
Patent GB-177717-A (GB)
Title: Improvements in or relating to heating stoves
IPC: F24B5/02
Filed: 1921-04-13
Abstract: 177,717. Pedersen, C. E. April 13, 1921. Closed solid - fuel stoves; heat-radiators.- A solid-fuel stove of the type having heat-radiating pipes with means for directing the combustion gases either through them or direct to the outlet comprises a closed chamber 1 in which is arranged a fire-grate, on either side of which are flues 2 through which the gases pass downwardly to an outlet 3 in the bottom of the chamber 1. Air-valves are arranged so that air may be supplied above and below the grate. In the stove shown, the gases pass into a chamber 4 at the base, and thence in parallel through two U-shaped heat-radiating pipes; or, by opening a valve D', a part or the whole of the gases may pass direct to the outlet and be used to heat a radiator in another room.
Patent GB-634669-A (GB)
Title: Improvements in the stabilisation of vinyl and vinylidene chloride resin compositions
IPC: C08K5/098
Filed: 1947-04-23
Abstract: Vinyl and/or vinylidene chloride polymers and copolymers are stabilized to heat and light by incorporation of 0.5-10 per cent by weight, preferably 0.5-4.0 per cent of a bismuth salt of an organic acid.  Suitable copolymers may contain a major or minor proportion of vinyl or vinylidene chloride copolymerized with one another or with one or more copolymerizable compounds, e.g. vinyl acetate, methoxybutyrate and laurate, acrylonitrile, methacrylonitrile, crotononitrile, cyclohexyl methacrylate, butyl acrylate, ethyl chloracrylate, diesters of itaconic, maleic and fumaric acids with alkyl or cycloalkyl radicals of six or less carbons, styrene, p-chlorstyrene, ethyl styrene and vinyl xylene. The compositions may include plasticisers, fillers, pigments, dyes and lubricants, e.g. dibutyl phthalate, tricresyl phosphate, calcium stearate.  Bismuth salts of fatty acids having at least 12 carbons are preferred, e.g. the formate, acetate, butyrate, crotonate, laurate, palmitate, stearate, oleate, citrate, tartrate, maleate, benzoate and phthalate. The stabilised compositions are non-toxic and suitable for the manufacture of calendered sheets, mouldings and extrusions of use with foodstuffs or in contact with the skin.  Specifications 450,856 and 17729/45 (as open to inspection under Sect. 91) are referred to.
Patent GB-140040-A (GB)
Title: Improved means to be employed in connection with the raising, or moving, of sunken vessels, or other submerged objects and for analogous purposes
IPC: B63C7/16
Filed: 1919-05-02
Abstract: 140,040. Hagman, W. J. March 7, 1919, [Convention date]. Drilling submerged work; tapping; screws, inserting, drills; taps; sockets.-Plates carrying chains or the like are attached to sunken vessels by elements operating through holes in the plates which successively drill, tap, and screw themselves into the skin of the vessel. A submarine vessel 1, Fig. 1, has a projection 3 with a guideway 2 on which runs a carriage 4 carrying in trunnions 5, 9, a machine 6 for attaching a plate 18 to the skin of a sunken vessel x. The plate 18 is adjusted in close proximity to the wreck by means of an hydraulic ram 8 in a cylinder 7, and a manually operated rod 11 on which is mounted a spring 16 to take up small inequalities. The machine 6, Fig. 5, comprises a casing 27 enclosing an electro motor 29 which rotates and feeds forward a series of spindles 50 situated opposite holes in the plate 18 which is attached to the front of the machine 6 by lead or like bolts 22. For rotating the spindles 50, sleeves are splined to the spindles and carry worm-wheels 55 engaging a worm-shaft 43 driven from the motor 29. Each of the spindles has a threaded portion 54 in an internally threaded sleeve carrying a worm-wheel 55<a> engaging a shaft 44 also driven from the motor. On rotating the shafts 43, 44, the spindle 50 is rotated, and fed forward at a rate dependent on the difference of speed of the shafts 43, 44, and the pitch of the screw 54. Each spindle 50 is tubular and carries a shank 57, Fig. 7, revoluble with it but free to slide in it. Connected to the end of the shank 57 by a shearing wire 59 is a 'bar on which are formed successively a drill 60, tap 61, screw 62, and head 63. In operation, the plate mounted on the machine 6 is placed in contact with the wreck and the spindles rotated and fed forward. The drills 60 pass through the holes in the plate and drill holes in the ship's plating. When the hole is drilled, a split collar 71 comes into contact with the ship's side and prevents further forward motion of the drill. The forward feeding of the spindle 50 compresses a spring 70 until the compression is sufficient to break the collar 71. and shoot the tap 61 into the hole, ensuring a grip. Continued rotation taps the hole and screws the bolt home. The shearing wire 59 then breaks and teeth 64 in the head of the bolt 63 cut through a soft-metal collar 68 should rotation continue and the spindle 50 still move forward. The shearing wire 59 and teeth 64 also come into action should one of the drills stick or break. When the bolts are screwed home and separated from the shanks 57, as shown by the amount of power consumed by the motor, the machine 6 is withdrawn by admitting water to the cylinder 7, the lead bolts 22 break, and the plate 18 with its chains 21<a> remains bolted to the wreck.
Patent GB-693793-A (GB)
Title: A liquid adding apparatus for the disinfection of water-closets, urinals and other similar places
IPC: E03D9/03
Filed: 1951-05-10
Abstract: 693,793. Disinfecting water closets and the like. WITTWER, R. May 10, 1951 [May 12, 1950; Jan. 11, 1951], No. 10993/51. Class 26 An apparatus for adding disinfectant to the scavenging water of water closets, urinals and the like, and which comprises a reserve chamber 7 for addition liquid, an outflowing duct 22 and a valve 24 in the duct and controlled by the scavenging water, is characterized in that it comprises a mixing chamber 6 opening to the duct 22, an intake and discharge canal 13 for the mixing chamber (which canal is connected to the scavenging pipe), an obturator 46 in the canal 13 and a float 19, in the mixing chamber, which controls both the valve 24 and the obturator 46. The canal 13 is connected by a nipple 12 to a pipe (not shown), the end of which projects into the flush pipe. When the flush commences, flushing water enters the chamber 6 via the pipe connected to the flush pipe and raises the asymmetric float 19, which is simultaneously partially rotated by an inclined pin 43 and bracket 45, so that the conical end of the finger 42, connected to the float by a rod 39, lifts the end 37 of the latch 27. The latch lifts the valve 24, via the rod 25, and thus allows disinfectant stored in the chamber 7 to enter the mixing chamber 6. As it continues to rise, however, the finger 42 slips off the latch end 37 (which is formed obliquely) so that the valve 24 closes. Meanwhile the float 19 continues to rise, and finally the obturator 46 connected to the underside closes the inlet 13. At the end of the flush, the pressure of the liquid stored in the chamber 6 is greater than that of the water in the flush pipe and this liquid discharges into the flush pipe. The float 19 may be (a) asymmetric and asymmetrically placed, as shown, (b) of 'annular form, or (c) a symmetrical body having sufficient clearance or an asymmetrically placed hole to provide sufficient space for the mixing of the disinfectant and the water in the chamber 6.
Patent GB-799417-A (GB)
Title: Improvements in or relating to electric communication cables
Inventor: EVANS BENJAMIN BEARDMORE
IPC: H01B7/28
Filed: 1956-04-11
Abstract: 799,417. Cables. CABLE MAKERS PROPERTIES, Ltd. March 8, 1957 [April 11, 1956], No. 11041/56. Addition to 758,815. Class 36. In a communication, cable comprising at least one pair, each conductor is surrounded by a glass covering and at least one barrier layer of silicone rubber, each covered conductor or each pair or assembly of pairs having a covering of non- halogen containing insulating material. The barrier layer may be applied under and/or over the glass covering, which may be in the form of a braid, roving or wound tape, and the outer covering may comprise a glass tape coated on one or both sides with a silicone rubber and/or a jacket comprising a natural or synthetic non- halogen containing rubber or other hydrocarbon such as polyethylene, which may be coloured or provided with other identification. Further sheathing, comprising a vulcanizable natural or synthetic rubber or polyethylene, and armouring may be provided.
Patent GB-358122-A (GB)
Title: A device for disinfecting or deodorising air in lavatories
IPC: A61L9/12
Filed: 1931-02-05
Abstract: 358,122. Disinfectant sprayers. ARMSTRONG, T. G., 6, Wear Bay Crescent, Folkestone, Kent. Feb. 5,1931, No. 11110/30 [Class 26.] FIG. 2. FIG. I. In a device which is interposed in the operating chain &c. of the cistern for disinfecting the air in lavatories, the disinfectant receptacle 1, Fig. 1, and the pump member 2 are connected by means of a bayonet-joint 4, 5. An aperture fitted with a plug 6 is provided in a closure member 3 secured to the receptacle 1 which is also fitted with a drip-catching lip 1b beneath the air pipe 7. In another form, an external channel 16, Fig. 2, having a cushion ring 15 is provided on the receptacle 1 to accommodate the pump barrel 2.
Patent GB-1086862-A (GB)
Title: Improvements in or relating to side loading industrial lift trucks
Inventor: BOWMAN-SHAW GEORGE NEVILLE
IPC: B66F9/10
Filed: 1963-03-22
Abstract: 1,086,862. Side-operating lift trucks. LANCERS MACHINERY Ltd. March 18, 1964 [March 22, 1963], No. 11438/63. Heading B8H. The mast assembly 1 is traversible in a recess 2 in the truck chassis and is provided with lugs 3 which are adapted to engage in brackets 4 secured to the walls of the recess for tying together the front and rear portions of the chassis when the mast assembly is positioned with the forks projecting beyond the side of the chassis. A beam 5 may be secured to the base of the mast assembly and provided with rollers 6 arranged to engage with guides 7 on the walls of the recess. In the embodiment shown in Fig. 3, a bracket 12 on the mast supports a roller 11 which engages an intermediate guide 10 having a roller 14 which engages a flange 16 secured to wall of the recess, whereby the mast assembly and guides 10 act as a tie between the front and rear chassis portions. The guides 10 permit the mast assembly to be projected beyond the side of the truck.
Patent GB-1119759-A (GB)
Title: Improvements in internal combustion engine valve components
IPC: C22C37/06
Filed: 1967-03-10
Abstract: A tappet, camshaft or rocker arm for an internal combustion engine has at least its bearing surface portions made of an alloy consisting, by weight of:- .C.3 - 3.6% .Si.2 - 3% .Mn.0.7 - 1.25% .Ni.0.15 - 0.7% .Cr.0.4 - 1.5% .Mo.0.15 - 0.7% .Ti.0.1 - 1% Fe and impurities, balance. P and S are the main impurities and should not exceed 0.2% and 0.01% respectively.  The Ti is present in the alloy as carbide and/or nitride. The components may be hardened by heating at 1580 DEG  F. for 30 minutes and then quenching in oil.