baber/WOPTO huggingface dataset:
Patent GB-123539-A (GB)
Title: Respiratory Apparatus for use in Rarefied Atmospheres.
Inventor: KENT ALBERT FRANK STANLEY
IPC: A62B7/14
Filed: 1917-03-15
Abstract: 123,539. Kent, A. F. S. March 15, 1917. Pressure-regulating valves.-A valve controlling the supply of oxygen &c. to airmen is actuated by the atmospheric pressure so as to increase the supply as the pressure falls during an ascent. The apparatus comprises a chamber A sealed by a diaphragm B<1>, and a chamber B open to the atmosphere. The valve F controlling the passage of gas from a reservoir through the outlet tube G to a mask or mouthpiece is normally closed bv a cam-lever E pivoted at D<1> to a lever O and formed with an arm D held in position by a spring C adjustable by means of a screw K. Reduction of atmospheric pressure in the chamber B causes the diaphragm B<1> to move outwardly and so move the cam lever against the action of the spring C and allow the passage of gas through the valve F. Fall of pressure in the gas reservoir may be compensated by pivoting the lever O at O<1> and fitting it with an adjustable screw L bearing against an extension of a piston M in communication with the gas reservoir through a valve P. Fall of pressure in the reservoir allows the piston to be pressed downwards by a spring N' and so causes the lever 0 to turn about its pivot O<1> and reduce the pressure of the cam lever E on the valve F. In modifications, the diaphragm B' may be replaced by a piston or bellows, the piston M may be replaced by an expansible capsule or bellows, and a secondary chamber may be introduced between the valve F and the mask and may be fitted with an outlet valve actuated by the atmospheric pressure in the same manner as the valve F.
Patent GB-1386041-A (GB)
Title: Lapping or honing machine
IPC: B24B37/08
Filed: 1973-01-25
Abstract: 1386041 Grinding P WOLTERS 25 Jan 1973 [1 Feb 1972] 3820/73 Heading B3D [Also in Division F2] A lapping or honing machine comprises a pressure unit which acts on a lapping or honing wheel, and a control device for adjusting the force applied by the pressure unit, the device causing the force to increase steplessly from a starting value to a maximum value, to be held at the maximum value for a predetermined length of time and to be finally reduced to a final value. As described, the machine has a stand 1 supporting a lower lapping wheel 2 and an upper lapping wheel 3 between which workpieces 4 are located. The upper wheel 3 is rotatably mounted in a tubular part 5 and is driven by a spindle 6 passing through the part. An annular shoulder 7 is formed on the part 5 and divides a cylinder into chambers 8, 9. The upper chamber is connected directly to a pressure medium source 10, and the lower chamber is connected by a valve 11 to a source and controlled so that the force supplied increases with time in a straight line or in a curve, is maintained at the maximum force, and is then decreased in steps or in a straight line. Alternatively, the pressure may be varied in the upper chamber. The valve consists of a member 13 engaged by a spring 14 which, in turn, is engaged by a movable part 15 of a spindle 17 driven by a D.C. motor 16. An attachment 20 on the part 15 co-operates with a pair of limit switches 18, 19 which are adjustable by spindles 21, 22. The chamber 8 is connected to an inlet 23 of the valve and an outlet 24 is connected to a pressure storage container. The valve acts as a throttle and pressure in the chamber 8 is adjusted by the tension in spring 14 as controlled by the motor 16. The limit switch 18 is adjusted to control the maximum pressure, and limit switch 19 is adjusted to control the starting and final pressures in the chamber. In another embodiment, the member 13 is movable by a cam or electromagnetically. In another embodiment, the upper lapping plate 3 is rotatably mounted on a part 5, Fig. 3, formed with shoulders 25, 26 abutting a pair of springs 27 between which is an annulus 32 connected by an arm 28 to a support 30 engaging a screw-threaded spindle 20 driven by an electric motor according to a programme so as to control the force applied by the lapping wheel.
Patent GB-920227-A (GB)
Title: An improved hydraulic press and method of pressing sound recording discs
IPC: B29C43/02
Filed: 1961-02-01
Abstract: 920,227. Pressing gramophone records. AFFILIATED PUBLISHERS Inc. Feb. 1, 1961 [Feb. 23, 1960], No. 3873/61. Class 87(2). A method of pressing gramophone records 14 in an hydraulic press comprises heating the mould 11, 13 with a heated fluid such as oil. This same oil, which is heated in a sump tank is used in the hydraulic control circuit for the press. In operation a disc or sheet 14 is placed between open mould halves 11, 13 (see dotted lines in Fig. 1). A switch is operated to energize a magnetic valve so that the mould is closed and moved by a slide 17 into a position above a press 6 (see solid lines Fig. 1) in which position by means of magnetic valves the supply of oil to the heating ducts in the mould is stopped and the piston in the press is raised. A time relay is operated so that after one second the piston is impelled downwardly by a spring and encounters a switch to cause the mould halves to be driven apart by means of the slide 17.
Patent GB-275096-A (GB)
Title: Improvements in means for identifying the sizes of pencil refills
IPC: G01B3/34
Filed: 1927-02-11
Abstract: 275,096. Last, A. W. Feb. 11, 1927. Linear-dimension gauges.-A gauge for use in determining the sizes of refills for pencil holders consists of a member d of metal, wood, or celluloid, provided with holes e corresponding in diameter to the different sizes of lead, and wires f corresponding to the sizes of the lead orifices, each hole and wire being identified by a numeral associated with the particular size of lead.
Patent GB-671149-A (GB)
Title: Improvements in or relating to glass in fibrous form
IPC: C03C13/00
Filed: 1950-02-15
Abstract: 671,149. Glass composition; fibres. CARBORUNDUM CO. Feb. 15, 1950 [Feb, 23, 1949],. No. 3930(50. Class 56. Glass in fibrous form comprises not less than 90 per cent of Al 2 0 3  and SiO 2  in substantially equal parts by weight and a modifying agent in sufficient quantity to render the glass resistant to devitrification up to 1400‹ C. By " modifying: agent " is meant any of the following materials : borax, borax-glass, Na 2 O e.g. contained in Al grade alumina with B 2 O 3  with or without soda ash, AlCl 3 , Na 2 CO 3  KC1, KF, K 3 PO 4 , and ZnO. The Al 2 O 3 /SiO 2  ratio may be maintained in the range 45-65 parts by weight Al 2 O 3  to 55-45 ' parts by weight SiO 2 . The modifying agent is preferably present in amounts of 1¢-6 parts by weight to every 100 parts of combined Al 2 O 3 , and SiO 2 . Up to 7¢ per cent of the SiO 2  may be replaced by ZrO 2 . The SiO 2  may be introduced as a high purity flint or white sand. The compositions of two satisfactory Al 2 O 3  sources namely T-61 and A1 grade white alumina are given. Kaolin &c. is not suitable because of impurities such as iron oxides, TiO 2 , and alkali earths &c. A small amount of Na,O is preferably used ,with all modifying agents. Example 1 is prepared from 50 parts A1 grade Al 2 O 3  50 parts flint, and 1¢, parts borax glass by mixing,. fusing, and subjecting a stream of the molten material to the action of a stream of compressed air directed at right angles thereto. The resultant glass is composed of 52.67 per cent Al 2 O 3 , 45.77 per cent SiO 2 ,1.06 per cent B 2 O 3  and 0.50 '  per cent Na 2 O. Example 2 is formed from 50 '  parts Al grade Al 2 O 3 , 50 parts flint, 1 part B 2 O 3 , and 1 part Na 2 CO 3 . With Al 2 O 3  sources which contain alkali oxide, the B 2 O 3 , added can vary between 1 and 5 per cent and the added Na 2 O varied to provide 0-3 per cent of Na 2 O. , Example 3 is formed from 50 parts Al grade Al 2 O 3  42.5 parts flint, 7¢ parts ZrO 2 , 2 parts borax: glass. Example 4, for use at 1300‹ C. or lower, is formed from 50 parts Al grade Al 2 O 3  50 parts flint, 3.5 parts Na 2 CO 3 . A further satisfactory composition contains 50 parts Al 2 O 3 , 50 parts SiO 2 , and 1¢-2 parts borax glass. The fibres may be formed into batts, cloth, tapes, sleevings, or cordage, and used for insulation, filtering, packing &c.
Patent GB-113971-A (GB)
Title: Improvements in Lathes.
Inventor: VANDENHEUVEL LOUIS CONSTANT AL
IPC: B23B5/42
Filed: 1918-03-06
Abstract: 113,971. Heuvel (otherwise Vanderheuvel), L. C. A. van den. Feb. 14, 1917, [Convention date]. Lathes; lathe and like centres and drivers.- The Figures show the lathe as adapted to the machining of a rifle grenade P, but it can be employed on other work such as backing-off milling- cutters. The framing a has two bearings b for the main spindle c which carries fast and loose pulleys, and a bearing a<1> for the tail-stock which is fitted with a spring-centre g that can be withdrawn by a lever i. The spindle c is fitted with a driver e to suit the work and a centre f. The tool-rest k is pivoted on a spindle and is moved to and from the work by a screw q<1> and a nut s actuated by a hand-wheel r<1> or by power. The nut is mounted in a bearing carried on trunnions s'. The rest k has a dovetailed groove, one side of which is movable, to receive the tool m which is fed by a screw n and locked by a bolt o. An adjustable stop p limits the movement of the rest. When used to back-off a milling-cutter t, Fig. 8, the tool m and rest k receive an oscillatory movement in one direction from a cam u and in the other by a suitable return device,
Patent GB-470027-A (GB)
Title: Improvements relating to railway-rail chairs or base plates
IPC: E01B9/46
Filed: 1936-02-08
Abstract: 470,027. Securing railway rails. COLVILLES, Ltd., and MACBRIDE, R. W. Feb. 8, 1936, No. 3940. [Class 104 (ii)] Rails are secured to chairs or sleepers 1 by clips 5 engaging the rail flanges and secured by bolts 4 provided with lateral heads 10 engaging the underface of the chair or sleeper. A plug 7, integral with the clip, enters the bolt hole 3 in the chair &c. and secures the bolt against movement. During the tightening of the nut 9 on the bolt, the clip may pivot on the edge 14 of the upstanding ribs 12 through which the bolt holes are formed. In another form it pivots on the top of the chair by means of a downward extension at the back.
Patent GB-500912-A (GB)
Title: Improved process for manufacturing fermented beverages
IPC: C12G3/02
Filed: 1938-02-08
Abstract: 500,912. Food for animals. ROEDER, G. Feb. 8, 1938, No. 3963. Convention date, Feb. 15, 1937. [Class 5 (ii)] [Also in Group VI] Albumen, precipitated by heat from whey before the latter is used in brewing, may be used as cattle fodder.
Patent GB-1213633-A (GB)
Title: Improvements in push button units
Inventor: CARTER JOHN MICHAEL MINDEN
IPC: H03J5/12
Filed: 1967-01-26
Abstract: 1,213,633. Push-button tuning. IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd. 1 April, 1968 [26 Jan., 1967], No. 3963/67. Heading H3Q. A push-button tuning unit has a switch on each button for energizing a solenoid to locate the spindle of the corresponding button in the operative position. Each button 7 (Fig. 2) when pushed in closes a micro-switch 47 to energize a solenoid whose armature (31 in Fig. 1, not shown) swings a lever 35 with arms 35a into the position shown so that the nose 39 of a latch plate 38 moves to the right and rides over the sloping surface of a collar 15 to come to rest in the position shown. In the case of the buttons that have not been pressed, the nose 39 remains to the left of the collar 15. On release of the button, the solenoid is de-energized and a spring (40 in Fig. 1, not shown) returns the armature and lever 35 to their former positions. The nose 39 then pushes the collar 15 and the button spindle to the left until the latch plate ends up in position 38a and the end 19 of the spindle enters a hole in the left-hand frame. During this movement, a nut 12 on the spindle engages the end 21 of a lever 22 and moves a push-rod 25 which is attached to the tuning elements (not shown). The tuning setting is adjusted by rotating the button and thus moving the nut 12 along the spindle. When another button is pressed the nose 39 of the latch plate rides up the sloping surface of'a cam 50 and allows the collar 15 of the first button to return to its disengaged position under the influence of a spring (not shown). Modifications.-The functions of the spring (40) and the solenoid can be interchanged so that the spring causes engagement of the latch plate 38 and the solenoid drives the spindle. The spring (40) can be replaced by a second solenoid. The power required by the spring and solenoid can be reduced by introducing a bell-crank between the armature and the lever 35.
Patent GB-886833-A (GB)
Title: Improvements in preparation of sodium borohydride
Inventor: WINIARCZYK EDWARD RICHARD
IPC: C01B6/00
Filed: 1959-02-04
Abstract: Reaction mixtures containing sodium borohydride and sodium methoxide are dissolved in water, methanol is removed from the resulting aqueous solution, which is extracted with an organic solvent for NaBH4, and solid NaBH4 is recovered from the solution.  Solvents may be iso-propylamine, n-butylamine, ethylene diamine, monomethylamine, monoethylanime, n-monopropylamine, pyridine, piperidine, ethanolamine, morpholine, cyclohexylamine, dimethyl ether of mono-, di-, tri-, or tetra-ethylene glycol, diethyl ether of diethylene glycol, mono-methyl ether of ethylene glycol, or acetonitrile.  The mixture of NaBH4, NaOCH3, and excess NaH in a liquid hydrocarbon, obtained by reacting B(OCH3)3 with NaH dispersed in a mineral oil is dissolved in water and the oil layer is separated.  The resulting aqueous solution of 1 mol NaBH4, 3 mols NaOH, and methanol (the latter resulting from hydrolysis of NaOCH3 and NaH) has the methanol distilled off, and is extracted by a continuous countercurrent of the organic solvent, if necessary, at elevated temperature.  The extraction may be repeated.  The organic solvent solution of NaBH4, which contains H2O, as NaBH4.  2H2O is separated from the aqueous layer and vacuum dried to produce solid borohydride.  The organic solvent may contain up to 15% H2O and the aqueous solution should be saturated with NaOH, or contain up to 60% H2O.
Patent GB-182840-A (GB)
Title: Improvements in the valve mechanism of internal combustion engines
IPC: F01L13/00
Filed: 1921-02-03
Abstract: 182,840. Cammell, Laird, & Co., Ltd., Carter, Sir, G. J., and McCallum, J. Feb. 3, 1921. Valve-gear; regulating.-In two-stroke engines, particularly vertical multicylinder engines of the Fullagar type, the compressed-air admission valve C for starting or manceuvring and the fuel-injection valve B of a cylinder are actuated by means of rods D<1>, D connected to levers E', E fulorumed at opposite sides of the crank-shaft A and co-operating with cams x, y formed on a member Z carried by the crank-shaft, preferably by being shrunk on to segmental blocks z<1> at opposite sides of a crank-web a<1>. The cam bowls are mounted in members H<1>, H pivoted at J<1>, J to the levers E', E. The levers E', E are formed with hollow gudgeon pins mounted in bearings e<3>, the reversing-shafts N<1>, N passing through the hollow pins. The levers E<1>, E are formed with arms e<4> adapted to bear against adjustable stops U to limit the movement of the levers towards the crank-shaft so that the cam bowls are maintained, just clear of the cylindrical surface of the member Z. The rods D, D' are fitted with springs V mounted in boxes V<1> so as to maintain the levers E, E' against the cams.
Patent GB-310584-A (GB)
Title: Improvements in or relating to display stands and the like
IPC: F16B7/10
Filed: 1928-02-10
Abstract: 310,584. Sage & Co., Ltd., F., Harris, F. W. H., and Bosker, B. Feb. 10, 1928. Pedestal stands.-In a telescopic pillar for a display stand the telescoping members are held against relative rotation by a rib in the outer member engaging a groove in the inner member, the members being held in adjusted position by a spring pressed catch pivoted to the outer member and selectively engaged with recesses &c., in the inner member. In the construction shown, a short groove k in the outer member a forms an internal rib engaging a groove j in the inner member b, the bent end g of the pivoted catch f engaging notches at the edges of the groove j. The member a may be provided with a terminal cap l formed with a tongue to engage the groove j. The catch may be provided with a pressed out tongue h which bears against the pillar to retain the catch in locking position. The catch is pivoted between lugs of a clip c or between lugs pressed out of the outer member. According to the Provisional Specification the members a, b may be of square section.
Patent GB-899389-A (GB)
Title: Improvements in or relating to the production of expanded polyethylene
Inventor: COOPER ALFRED
IPC: C08J9/12
Filed: 1960-02-05
Abstract: Expanded low density polyethylene is prepared by (1) either submitting the polymer to ionizing radiation or heating it in the presence of an organic peroxide to a temperature at which the peroxide will dissociate into free radicals, (2) heating the modified polymer in the presence of nitrogen under pressure to a temperature higher than its softening temperature and (3) expanding the material at a lower pressure.  Suitable polyethylenes for the process are those with densities in the range 0,9 to 0,94 g./c.c.  Specified ionizing radiations are high energy electrons produced by a Van de Graaff accelerator, gamma rays and X-rays.  Dicumyl peroxide is the specified peroxide.  In the examples, the expanded materials are prepared from tubular sections or slabs of polyethylene irradiated with high energy electrons or from polyethylene chips which have been either irradiated or mixed with dicumyl peroxide before being sheeted and, when the peroxide is used, pre-heated to decompose it; the chips may also be mixed with a compounding ingredient such as carbon black, "Irgalite" Yellow Br. ("Irgalite" is a Registered Trade Mark) or crystalline calcium carbonate.ALSO:Expanded low density polyethylene is prepared by (1) either submitting the polymer to ionising radiation or heating it in the presence of an organic peroxide to a temperature at which the peroxide will dissociate into free radicals, (2) heating the modified polymer in the presence of nitrogen under pressure to a temperature higher than its softening temperature and (3) expanding the material at a lower pressure.  Suitable polyethylene for the process are those with densities in the range 0,9 to 0,94 g/c.c.  Specified ionising radiations are high energy electrons produced by a Van de Graaff accelerator, gamma rays and X-rays.  The specified peroxide is dicumyl peroxide.  In the examples the expanded materials are prepared from tubular sections or slabs of polyethylene irradiated with high energy electrons or from polyethylene chips which had been either irradiated or mixed with dicumyl peroxide before being sheeted and, when the peroxide is used, pre-heated to decompose the peroxide; the chips may also be mixed with a compounding ingredient such as carbon black, "Irgalite" Yellow Br. ("Irgalite" is a Registered Trade Mark) or crystalline calcium carbonate.
Patent GB-416338-A (GB)
Title: Bridge support for eye glass frames
IPC: G02C5/04
Filed: 1934-02-09
Abstract: 416,338. Spectacles. BOCK, F., 36, Spandauerstrasse, Charlottenburg, Berlin. Feb. 9, 1934, No. 4284. [Class 97 (i).] A support b shaped to fit the nose is attached to the centre of the bridge a by a universal joint. The connection may be formed by a spherical or conical projection b<1> on the support b or the bridge a projecting into a corresponding depression a<1> in the other part. A screw c is provided to clamp the joint in any position. The support b may bear on the nose through two adjustable end pieces e.
Patent GB-1529913-A (GB)
Title: Beta-lactam compounds
IPC: C07D205/09
Filed: 1976-02-04
Abstract: 1529913 7 - Oxo - 4 - oxa - 1 - azabicyclo- [3.2.0]heptanes BEECHAM GROUP Ltd 21 Jan 1977 [4 Feb 1976 4 March 1976 14 April 1976 11 June 1976] 04320/76 08597/76 15346/76 and 24227/76 Headings C2C and C2P [Also in Division A5] Novel 7 - oxo - 4 - oxa - 1 - azabicyclo[3.2.0]- heptanes of the general formula wherein R 1  is H, C 1-4  alkyl, hydroxymethyl or phenyl; R 2  is H, C 1-4  alkyl or optionally salified or esterified carboxyl; R 3  is H, Cl, optionally substituted alkyl or a conjugating group; and. R 4  is a conjugating group, CH 2 OH or but excluding clavulanic acid and its salts and esters ('conjugating groups' are groups containing an unsaturated atom linked directly to the olefinic carbon atom shown in the formula) are prepared, e.g. (a) when R 4  is other than CH 2 OH or CH(OH)CH 3 , by cyclization of an azetidinone of the general formula wherein X is Cl or Br in the presence of at least a molar equivalent of a base; or (b) when R 4  is CH 2 OH or CH(OH)CH 3 , by reduction of the corresponding compound in which R 4  is esterified CO 2 H or COCH 3 . The mixed anhydride of the formula is prepared by treating (Z)-(2RS,5RS)-(3-benzylidene)-7-oxo-4-oxa-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid with diphenylphosphinyl chloride and N-methyl-morpholine. The mixed anhydride of the formula is prepared analogously.
Patent GB-1091413-A (GB)
Title: Improvements in articles to be subjected to cyclic compressive loads
Inventor: WOOD JOHN OSWALD
IPC: B29D30/70
Filed: 1964-02-01
Abstract: A tyre, industrial belt or a rolling lobe diaphragm is reinforced with a lace fabric disclosed in Specification 1,091,414.
Patent GB-549229-A (GB)
Title: Improvements in cabinets, particularly for refrigerators
IPC: F25D23/12
Filed: 1942-04-02
Abstract: 549,229. Refrigerators. BRITISH THOMSONHOUSTON CO., Ltd. (General Electric Co.). April 2, 1942, No. 4415. [Class 29] A butter receptacle 13 for a refrigerator comprises inner and outer shells 14, 15 held together by a peripheral front member 16 and rear studs 19, and is retained in a corner of the cabinet by being urged forwardly by springs 33 bearing on studs 27 passing through apertures 27a in the rear wall of the shell 15 until the edge of an aperture 32 on the side wall of the outer shell engages behind the head 31 of a stud 30 on the side wall of the cabinet. The receptacle has a door 21 hinged at the top and spring-urged either to open or closed position. Near the top of one side wall of the receptacle the space between the shells contains an electric heater 34 controlled by a thermostat 35 having an adjusting knob 39. The electric wiring of the receptacle terminates in a plug 43 co-operating with a socket 41 on the rear wall of the cabinet.
Patent GB-1102264-A (GB)
Title: Method of and apparatus for coding or heating particulate material
Inventor: VANDENHOECK JEAN PAUL
IPC: B01F15/06
Filed: 1966-02-01
Abstract: 1,102,264. Heating and cooling granular materials. BUELL ENGINEERING Inc. 1 Feb., 1966, No. 4463/66. Heading F4U. Particles of fertilizer flow in counter flow to cooled, heated, or ambient air to effect heat exchange. The particles from hopper 10 are deflected by inclined plates 34 to form a curtain about inclined perforated plates 26-4a, 26-4b which are adjustably suspended from chains 30a, 30b. The particles then flow downwardly through perforated plates 26-1 to 26-3 and out through outlet 38. The air from inlet 16 is drawn upwardly through the perforated plates to outlet 22 by fan 18 driven by variable speed motor 20. Alternatively, the fan could be situated at the air inlet. The air flow is sufficient to produce a turbulent zone above the plates, but permits the downward passage of particles therethrough. The perforations comprise substantially half the area of each plate.