baber/WOPTO huggingface dataset:
Patent GB-764452-A (GB)
Title: Improvements in or relating to quaternary ammonium salts
Filed: 1955-01-24
Abstract: The invention comprises compounds of the general formula <FORM:0764452/IV(b)/1> wherein X is the anion of an acid, R and R1 are lower alkyl groups, and Y is a lower alkyl or lower alkoxy radical or a halogen in an ortho or meta position.  (" Lower " indicates a radical containing 1 to 4 carbon atoms.)  Such compounds are obtained by reacting the corresponding tertiary base with a quaternizing agent of the formula R1X.  In examples: (1) o - methylbenzylhydryl chloride (from the reaction of o-methyl-benzhydrol with hydrogen chloride) and N-ethylpiperazine are reacted to give N - ethyl - N1 - (o - methylbenzhydryl) piperazine, reaction of which with ethyl iodide or ethyl bromide gives N,N-diethyl-N1-(o-methylbenzhydryl) piperazinium iodide or bromide respectively.  The corresponding chloride is obtained by treating the iodide with silver chloride.  Similarly prepared are (2) N-methyl-N - isopropyl - N1 - (o - bromobenzhydryl) piperazinium iodide; and (3) N-methyl-N-ethyl - N1 - (o - chlorobenzhydryl) piperazinium iodide. A list is given of further piperazinium iodides corresponding to the above formula, R and R1 being selected from methyl, ethyl and isopropyl radicals and ortho and meta substituents represented by Y being selected from methyl, bromo, chloro, methoxy and ethoxy radicals.  Specification 19458/49 (as open to public inspection) and U.S.A. Specification 2,630,435 are referred to.  Starting materials. Isopropylpiperazine is obtainable by catalytic reduction of carbethoxypiperazine in the presence of acetone followed by hydrolysis and concomitant decarboxylation of the ester function. N-ethyl-piperazine is obtainable by reacting piperazine in alcohol with an ethylating agent, adding an inorganic base and then excess ethyl chlorocarbonate, to give a mixture of N,N1-diethyl-piperazine, N - carbethoxy - N1 - ethylpiperazine (hydrolysable to ethylpiperazine) and N,N1-dicarbethoxypiperazine.
Patent GB-304774-A (GB)
Title: Improvements in or relating to cocks or valves
IPC: F16K31/524
Filed: 1929-01-22
Abstract: 304,774. Le Bozec, L. Jan. 26, 1928, [Convention date]. Lift valves; actuating-mechanism.-A two-way or multiple-way guided lift valve comprises a lift disc 12 or cone attached by a cross-pin 14 to a slide plunger 9 guided in a cylindrical guide 5 supported by ribs 4 in the casing 1. The plunger and valve are biassed to the open position by a light spring 16. To close the valve the handle 18 first operates the cam 8 to propel the plunger and carry the valve up to its seating. On further movement of the handle 18 an internal powerful spring 7, which is under an initial stress, is further compressed and acts upon the valve 12 through a pin 17 to force the valve tightly upon its seating. The pin has a hemispherical head, and the opening 13 through which the cross-pin 14 passes is flared at both ends, so that the valve disk is allowed to adjust itself evenly to its seating 3.
Patent GB-657164-A (GB)
Title: Electromagnetic actuator for contactors and like switches
IPC: H01H50/24
Filed: 1949-01-26
Abstract: 657,164. Electromagnetic switches. TELEMECANIQUE ELECTRIQUE. Jan. 26, 1949, No. 2152. Convention date, April 22, 1948. [Class 38(v)] The armature 15 of an electromagnetic switch is loosely mounted in a member 12 pivoted at 11 and engages the member 12 at a point 40 further from the axis 11 than the furthest limb 8 of the electromagnet. The biassing spring 29 tends to rotate the member 12 clockwise so that its turned over end 24 in engaging the armature tends to increase the pressure of the lower end of the armature on the lower pole 10 of the magnet relatively to the pressure of the upper end of the armature on the upper pole but this is compensated by removing the inner laminations of the electromagnet at the region 16. The carrier 12 is of sheet metal bent into U-shape, the sides of the U loosely embracing the armature. Screwed to the carrier 12 is a member 25 which is pivoted at 14 and which also serves as a stop for the armature but in the " closed " position shown the stop is not engaged. A gap also exists at 14 between the armature and the middle limb 9 of the electromagnet. The limb 8 is provided with a short-circuited winding 13 and the winding 34 is wound on the limb 9 and consists of two coils divided by a partition 35 carrying terminals 36 which serves for mounting the winding on the magnet support.
Patent GB-294848-A (GB)
Title: Improvements in water heaters
IPC: F24H1/16
Filed: 1928-01-23
Abstract: 294,848. Self, S. A., and Self Engineering Co., Ltd. Jan. 23, 1928. Water-tube boilers. - A number of vertical pipe-coils A, C are arranged in pairs within an inner casing c and are so connected to inlet and outlet pipes e, g, which are disposed between the inner and outer casings c, a, that the flow of water is through each pair of coils simultaneously. The coils in each pair are serially connected by junction boxes r, s.
Patent GB-970425-A (GB)
Title: Aircraft undercarriages
Inventor: WATSON KENNETH
IPC: B64C25/50
Filed: 1962-01-22
Abstract: 970,425. Aircraft undercarriages. WESTLAND AIRCRAFT Ltd. April 3, 1963 [Jan. 22, 1962], No. 2179/62. Heading B7G. An aircraft undercarriage comprises a plurality of castorable wheels, of which the planes of rotation of at least two of said wheels are selectable to be divergent with respect to the longitudinal axis of said aircraft in order to co-operate with the surface upon which said aircraft alights in a manner such as to resist movement in all lateral directions of said aircraft on said surface. A helicopter 1 is provided with an undercarriage having four freely castoring wheels 3-6 each capable of being locked in selected positions to resist lateral movement of the helicopter when standing on a moving platform, e.g. ships' deck. Each wheel is carried by a fork 11 free to castor within a eg 8, a manually-operable catch 7 being engageable with one of a pair of slots 9, 10. The latch mechanism may be power-operated and the wheels may be locked to prevent wheel-roll.
Patent GB-1170022-A (GB)
Title: Improvements in and relating to the Purification of Natural Gas
Inventor: TRACY RICHARD RIPLEY
IPC: B01D53/00
Filed: 1968-01-16
Abstract: 1,170,022. Natural gas separation process. R. R. TRACY and R. G. SPEAR. 16 Jan., 1968 [17 Jan., 1967; 27 Dec., 1967], No. 2244/68. Heading F4P. Separation of natural gas into a hydrocarbon rich fraction and into a relatively low boiling contaminant fraction e.g., nitrogen is effected by cooling compressed feed gas mixture by passage through parallel heat exchangers 24, 25, expansion with partial liquefication in valves 26, 27, separation into liquid and gaseous phases in a vessel 30, continuously withdrawing liquid and gas product streams from vessel 30 through lines 33, 31 and passing at least a portion of each product stream separately through said heat exchangers 24, 25 in counterflow to the feed gas mixture. The feed stream at well head pressure having been cooled, filtered and dried has its pressure reduced to 1500 p.s.i.a. at a valve 23 in feed line 22 and is expanded at valves 26, 27 to about atmospheric pressure; the return flow of liquid fraction through exchanger 24 being effected by a pump 34 for discharge in the gas phase through a line 40, 40A. The nitrogen gas withdrawn from vessel 30 and warmed in exchanger 25 is discharged through a vent line 32. The heat exchangers 24, 25 and expansion valves 26, 27 are periodically purged of condensed solids by closing the feed flow valve 23 and diverting the feed through a regulating valve 42, a heater 43, a line 44 and a valve 45 to back-flow the warm feed; valve 29 being closed and pump 34 being stopped. In a modification purging without interrupting the separation process is effected by duplicating the heat exchangers, expansion valves and flow regulating valves.
Patent GB-506081-A (GB)
Title: Improvements in or relating to multi-stage thermionic valve amplifiers
IPC: H03F1/36
Filed: 1938-01-24
Abstract: 506,081. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and FARREN, L. I. Jan. 24, 1938, No. 2261. [Class 40 (v)] In an amplifier covering a wide-band of frequencies, instead of using inductance in series with the load resistance to prevent loss of the higher frequencies in some of the stages, two consecutive stages comprise screen-grid valves VI, V2 of mutual conductance g<1>, g<2> the second of which has feedback produced by a resistance R5 between grid and anode while the load R1 of the first valve is substantially equal to G<1>R<5>/g2R2(g1R5-G<1>) where R2 is the load of the second stage and G<1> the gain of the two stages. The Figure shows the circuit wherein, preferably G<1>=g1g2 R2<SP>2>/# where # is the ratio of the stray capacity shunting R1 to that shunting R2, and R5 lies between 1À7g2 R2<SP>2>/# and g2R2<SP>2> /# and preferably R5=1À1g2R2<SP>2>/#, and R1=R2/(#-alpha) where alpha=g2R2<SP>2>/R5. The Specification gives a mathematical analysis of the circuit and the Provisional Specification in addition gives curves showing the change in response as R5 is varied. The amplifier may be direct-coupled, condensers C23, CO1 being omitted when the operating range includes very low or zero frequencies.
Patent GB-806152-A (GB)
Title: Improvements in or relating to earring pad device
IPC: A44C7/00
Filed: 1956-01-24
Abstract: 806,152. Earclips. NORMAN, F. P. Jan. 24, 1956, No. 2280/56. Class 43. In order to relieve the effect of the pressure of an earring of the clip-on or screw-on type upon the lobe of an ear to which it is secured by inner and outer clamping-members, the inner clamping member, e.g. screw 18, Fig. 2, is provided with a pad comprising a cushion member 20 with one face adapted to contact the lobe, the other face of the pad being secured to one side of a resilient non-metallic pocket element 21, Fig. 4, provided with a distendable central opening 25 of continuous circumference to receive the inner clamping member which, in this example, comprises a button-like head on the end of the clamping screw 18. The pocket element 21 is also provided with a distendable opening 24 along a portion of its circumference in order that the cushion 20 secured to it may be attached alternatively to a clip-on type earring, Fig. 5, by forcing the inside clip 26 of the latter into the opening 24. The cushion 20, which consists of sponge rubber or similar compresible non-slipping material, is attached to one face of the pocket element 21 by an adhesive or other means. In a modification, Fig. 6 (not shown) the pocket element is formed by a short length of flat rubber tube secured by adhesive to one face of th pocket element 21 by an with open ends and an aperture in the part of the outer wall intermediate the ends for attachment to the alternative forms of clamping members. Each form of clip may be provided with a pad 28 which bears upon the outer face of the ear lobe adjacent to the jewel or ornament such, as 14, Fig. 2, and consists of resilient material, similar to that of. the inner pad 20, attached by a permanent adhesive to a centrally apertured disc 29 which, in turn, is attached to the inside face of the jewel 14, or clip 31, Fig. 5, by a re-usable adhesive disposed within the aperture of the disc, thereby permitting the pad to be removed for attachment to a different ear ornament or clip.
Patent GB-943169-A (GB)
Title: Improvements relating to the phosphate-coating of metals
IPC: C23C22/20
Filed: 1962-01-22
Abstract: A microcrystalline phosphate coating, e.g. of weight between 0.8 and 1.6 g./m.2, is formed on a metal surface, e.g. of iron or zinc or an alloy thereof, by treatment with an aqueous acidic zinc phosphate solution, such as of Zn(H2PO4)2, containing from 0.02 to 1 g/l of aluminium ions as a refining agent for the coating.  The aluminium ions may be introduced into the solution as aluminium hydroxide, to form Al(H2PO4)3, or a soluble aluminium salt such as the acetate, sulphate, phosphate, carbonate or fluoborate. The ratio of Al:Zn ions preferably lies between 1:7 and 1:40. Oxidizing agents may be added to the solution, e.g. H2O2, nitrates such as Zn(NO3)2 and NaNO3, chlorates, or organic nitro-derivatives.  An example gives a steel plate immersed in the above solution at 80  DEG C. for 7 minutes, after a conventional degrease, and prior to water rinsing and rinsing in chromic acid solution.
Patent GB-1203384-A (GB)
Title: Improvements relating to sample preparation
IPC: G01N23/22
Filed: 1968-01-16
Abstract: 1,203,384. Vitreous sample preparation. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 16 Jan., 1968 [19 Jan., 1967], No. 2289/68. Heading ClM. A vitreous sample for use in X-ray fluorescence spectrometric analysis is made by heating to its melting point a substance to be investigated, e.g. dry cement raw material, in a holder made of an electrically conducting material, e.g. Pt-Au or graphite, and at the instant when gas evolution from the substance is completed, a vitreous material, e.g. alkali metal borates in the form of borax or lithium borate or mixtures thereof, is added to the holder which is inductively heated by high frequency energy until the substance and the matrix are molten. On cooling, a vitreous sample is formed.
Patent GB-214725-A (GB)
Title: Improvements in or appertaining to chucks for holding metal and the like during turning and like operations
IPC: B23B31/20
Filed: 1923-01-26
Abstract: 214,725. Entwistle, W. L., and Entwistle, F. Jan. 26, 1923 Chucks.-A collet chuck for holding work during turning, and particularly adapted for holding the rings of ring spinning machines, comprises a collet 6 which may be closed or opened without stopping the machine. The collet is carried by a rod 10 which is engaged by bell-crank levers 9 loaded at s and pivoted in a sleeve 7 integral with the spindle driving-pulley 4<b>. The collet is closed by the centrifugal action of the levers 9 and is opened by a sleeve 11 which may be moved forward against springs seated inthe sleeve 7, by a hand-operated rod 14. In a modification, the lever ends 9<b> engage slots in the rod 10 so that the collet may be positively retracted. The loading of the centrifugal arms may be varied. Turning.-The machine spindle is mounted in ball-bearings and a guard 17 is provided to enclose the rotary parts.
Patent GB-872965-A (GB)
Title: Method of making bifocal lenses
IPC: C03B23/22
Filed: 1960-01-22
Abstract: 872,965. Manufacture of glass lens assemblies. CORNING GLASS WORKS. Jan. 22, 1960 [Jan. 26, 1959], No. 2445/60. Class 56. In the manufacture of a fused glass lens segment assembly for use in the manufacture of bifocal lenses, a preformed glass carrier 10 containing a segment cavity 12, heated on a refractory block 20 to a temperature between its annealing and softening points, is moved beneath a sheared stream 16 of molten glass of different refractive index and of less cross-sectional area than the cavity, so that the shear mark 22 impinges on the bottom plane of the cavity 12 ; the stream 16 is sheared, as by means 18, after sufficient glass to fill the cavity has descended whereby the shear mark 24 is deposited above the level of the finished lens surface, shown in dotted line in Fig. 6, and the surface of the glass in the cavity is pressed while still at a temperature above its softening point to fuse it uniformly to the walls of the carrier and the fused assembly then annealed. The lower surface is then ground to the desired curvature 26, during which the carrier web 28 and shear. mark 22 are removed, and placed in a concave depression in the major element 30 of the same glass as the carrier 10 and fused thereto. The final grinding removes the shear mark 24. In a modification, the cavity 12 extends right through the carrier 10.
Patent GB-588635-A (GB)
Title: Improvements relating to the manufacture of moulded articles from moulding powders
IPC: B29C43/00
Filed: 1945-01-31
Abstract: 588,635. Moulding buttons &c. HORNFLOWA, Ltd., and WINTER, H. A. M. Jan. 31, 1945, No. 2463. Addition to 566,837. [Class 87 (ii)] In the parent Specification, differently-coloured. moulding powders, L, M, G are shaken through sieves and stencils into a mould and the powders are hot-pressed to form a tablet and finally moulded under heat and pressure into the form of buttons &c. According to the present invention the surrounding walls of the mould are made in two superposed parts A', A<2>, the part A<2> being adapted to retain the partly formed tablet by being formed with a constricted portion N. Fig. 2 shows the partly formed tablet after its first hot pressing by a plunger K'. The mould base is formed by an insert C screwed into the base plate B. The insert has projections which form grooves in the underside of the tablet. When the mould is dismantled, the partlyformed tablet is retained in the part A<2>, which is thereupon turned upside down, as shown in Fig. 4. Moulding powder P is then filled into the grooves, and the tablet is again pressed, upwardly this time, by a plunger K<2>, the .tablet being pressed past the constriction N and being forced against a mould part B<2> which is recessed to shape the top of the tablet. Finally the tablet is moulded under greater heat and pressure to form a button &c. The mould may be a multiple one, several tablets being formed in rows side by side.
Patent GB-558882-A (GB)
Title: A method of recovering magnesium from sea water
IPC: C01F5/22
Filed: 1943-03-10
Abstract: 558,882. Recovering magnesium from sea water. AFRICAN SISAL & PRODUCE CO., Ltd., WALSH, C. L., and BROWNE, R. J. March 10, 1943, No. 2479/42. [Classes 1 (i) and 1 (iii)] Magnesium is recovered from sea water by removing the carbonates and bicarbonates, converting the magnesium chloride into magnesium hydroxide by the addition of lime, adding a dilute pectic sol. extracted from vegetable matter with a sodium or potassium alkaline salt, to flocculate and precipitate the hydroxide and separating the precipitate. Preferably the pectic sol is obtained by treating the flesh of sisal or other member of the agave family, as described, for example, in Specifications 517,729, 532,877 and 539,602, [all in Group V], 150-200 parts by weight of a ¢ per cent. solution per 100,000 parts of sea water being used. The carbonates and bicarbonates may be precipitated as calcium carbonate by the addition of lime and flocculation of the precipitate accelerated by means of a pectic salt. Specification 544,810 also is referred to.
Patent GB-510237-A (GB)
Title: Improvements in or relating to electromagnetic release mechanism for permitting apparatus to function
IPC: H01H71/50
Filed: 1938-01-26
Abstract: 510,237. Spring-applied brakes ; printing- presses. WRIGHT & SONS, Ltd., J., and WRIGHT, P. J. Jan. 26, 1938, Nos. 2523 and 28980. [Class 103 (i)] [Also in Group XVI] In release mechanism for permitting the operation of a brake or other device of the kind comprising a spring-urged operating member restrained from movement by a pivoted arm or lever normally held by a catch, means are provided for effecting a fine adjustment of the lever so that the pressure normally exerted by the operating member on the lever may pass substantially through the pivot of the lever and the pressure on the catch be a minimum. In Fig. 1, the slidable rod 1 which may operate the switch, brake and trip mechanism of an automatic printing press, under the action of a spring 2, is normally restrained by a catch 8, 9, one member of which is on the armature 10 of an electromagnet 11 and the other on an arm 6 pivoted at 7 and connected by a link 3 to the rod 1. The arrangement of the parts 3, 6, is such that the turning moment on the arm 6 due to the spring 2 is small and thus also the reaction on the catch member 9. The catch is disengaged on energizing the magnet. The pivot 7 can be adjusted in a curved slot 12. The actual pivot is, eccentric to the part which enters the slot so that by turning this part a fine adjustment of the pivot is obtained. When the rod 1 is returned the catch re-engages. In a modification, Fig. 2, the rod 1 carries a ramp 20 engaging a roller 19 on the arm 6 the line joining the adjustable pivot 7 to the point of contact of the roller with the ramp passing just below the pivot of the roller so that the arm has only a slight tendency to rise. When the catch 8, 9, is disengaged the roller rides up the ramp as the rod 1 moves to the left. Movement of a pin 26 on the rod permits a stop arm 24 to be turned to a vertical position on its pivot 24<1> by a spring 25 to hold the arm 6 in the raised position to prevent re-engagement of the catch until the rod is returned. Adjustable stops 17, 23 are provided for the arm 6 and the armature 10, and the ramp 20 is adjustable by the means 21, 22. In a modification of the device of Fig. 2, the catch device is mechanically operated and comprises a bolt slidable in a direction parallel to the pivot axis of the arm 6 and in contact with the upper end of the arm. The bolt slides in bearings in vertical check plates between which the arm 6 and rod 1 are arranged and it is operated by a lever and link.
Patent GB-229280-A (GB)
Title: Improvements in devices for inflating air tubes
IPC: F16K15/20
Filed: 1925-01-28
Abstract: 229,280. Soc. Nouvelle des Etablissements Bardin, Renard, et Couche. Feb. 13, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Spigot-and-socket screwed joints; with valves. - A pump connector 1 is coupled to a valve casing by a swivel nut 12 having the lower threads removed and provided with packing 16. Packing 15 is also interposed between a flange on the lower end of the connector and a flange on the internal member of the swivel nut.
Patent GB-102083-A (GB)
Title: An Improved Control Handle for Motor-propelled Vehicles including Aeroplanes.
Inventor: SADLER SETH
IPC: B62M25/04
Filed: 1916-02-22
Abstract: 102,083. Sadler, S. Feb. 22, 1916. Control mechanism.-Relates to a rotary control handle for Bowden mechanism for use on the handle-bars of motor-cycles &c. The handle 2 is fixed on a rotary sleeve 1 provided with a flange 3 having a slotted boss 4, in which the end of the Bowden cable 5 is secured. The flange 3 works in a groove 6 in a bracket 7 clamped to the handle-bar &c. by a split ring portion 9, in which is a bolt 10. The bracket 7 is provided with a hole to receive the sheath 8 of the cable and a slot to receive the cable 5, and also with two lugs 11 to secure a spring 12, which encircles the sleeve 1 and holds the handle. in any desired position.
Patent GB-752569-A (GB)
Title: Improvements relating to the heat-sealing of films comprising thermoplastic material
IPC: B29C65/24
Filed: 1954-01-28
Abstract: 752,569. Heating by electric resistances. CELANESE CORPORATION OF AMERICA. Jan. 28, 1954 [Jan. 28, 1953], No. 2627/54. Class 39(3). [Also in Groups VIII and XVII] Overlapping edges of thermoplastic films are heat-sealed (see Group VIII) by a sealing member consisting of a resilient metal strip 54 of good heat conductivity but low heat capacity fixed to a block 53 slidably mounted, by a bolt 52, on a cooling block 35 of good heat conductivity and capacity ; strip 54 is normally spaced from block 35 by a compression spring 62. Block 35 is pivotally secured to links 38, 39 pivoted at 43, 45 respectively. In operation, link 39 is swung down by operating an arm 47 so as to move block 35 to the dotted-line position wherein strip 54 contacts a depression 33 in a thermostatically-controlled electricallyheated heating element 28 comprising a metallic block 29 having embedded therein a heating unit 31 and a thermostat 32. When strip 54 has been heated to the desired sealing temperature, arm 47 is moved back to swing block 54 up so that strip 54 projects through an aperture 25 in a table 11 into sealing contact with an overlap 15 in the thermoplastic wrapping 14 of a package 12 to form a seam therein.