baber/WOPTO huggingface dataset:
Patent GB-354951-A (GB)
Title: Method of alkalizing the waste liquors from the sods or sulphate pulp manufacture for the purpose of dry distilling the same
IPC: D21C11/12
Filed: 1930-07-08
Abstract: Alkalization of the waste liquids from the soda or sulphate pulp manufacture for the purpose of dry distilling the same is effected by adding oxides of barium or strontium mixed with oxide of calcium in a pulverized state to the concentrated hot waste liquor.  The resulting product is a pulverous mass directly ready for dry distillation.  In an example a waste liquor obtained by boiling esparto is concentrated and a pulverized mixture of barium oxide, barium carbonate, calcium oxide and barium peroxide is added, the barium peroxide being added to convert sulphur present in the waste liquor to sulphate, and to convert any barium sulphide present in the barium oxide to sulphate. To prevent the increase in quantity of sulphur a portion of the recovered barium oxide is treated with water giving the hydroxide and sulphydrate and the latter passes into solution in cold water.  The sulphydrate is then treated with carbon dioxide to give the carbonate which is finally burnt to oxide.  To remove any silica that may be present the hydroxide is dissolved in hot water leaving calcium hydrate and silicate undissolved.  In a further example coniferous wood completely digested with caustic soda is concentrated and a pulverized mixture of barium oxide and carbonate and calcium oxide is added to the hot concentrate giving a brown powder ready for dry distillation as the product.  The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of oxides of barium or strontium, or mixtures of such oxides with each other or with the oxide of magnesium; this subject-matter does not appear in the Specification as accepted.
Patent GB-634595-A (GB)
Title: Improvements in speed governors
IPC: G05D13/08
Filed: 1947-07-31
Abstract: 634,595. Governors. HAMMOND, E. V. July 31, 1947, No. 20739. [Class 57] In a governor an oscillating centrifugal member 6 is pivotally mounted at 7 on a driving shaft 1 and is in sliding point contact in a radial plane with the apex of a lip 12, or other part, of a member 8 axially slidable on the driving shaft 1 which rotates both members in unison, the sliding member 8 actuates a control lever 9 and is operated in one direction by the centrifugal member 6 and returned by an elastic means such as a spring 10 which may be adjustable by means of a movable collar 11.
Patent GB-797860-A (GB)
Title: Improvements in or relating to cold rolling machines
Inventor: DRADER JOSEPH C
IPC: B21H5/02
Filed: 1956-07-04
Abstract: 797,860. Rotting. MICHIGAN TOOL CO. July 4, 1956, No. 20774/56. Class 83 (4). In a method of cold rolling teeth, grooves, &c. on a cylindrical body while rotating on its own axis a tool engaging the body makes progressively deeper radial contact with teeth having tips which lie on a line sloping from a pitch line corresponding to a rolling diameter of the work at which the area of material to be removed below the periphery equals the area of tooth to be added outside the diameter. A shaft A, Fig. 1, to be formed with splines is freely rotatable on a fixed axis as between fixed and adjustable centres 5, 9, Fig. 2, and engaged between upper and lower platens 1, 3 moving in guideways 67 and having working faces 47 which make progressively deeper impressions on the shaft. In one example the platens, Fig. 6, have sharp teeth 75 at the leading end to grip and rotate the shaft A and the pitch line of the forming teeth 69a at the leading end region is tapered so that the teeth initially just engage the shaft A and work progressively deeper. Teeth 69b near the trailing end are fully conjugate with the splines to be formed and the opposed tops of the teeth are spaced apart a distance slightly less than the root diameter of the formed shaft to take up the elasticity of the machine under rolling pressure. The teeth 69c at the trailing ends are slightly reduced in thickness to eliminate seams &c. resulting from unbalanced forces at the end of the stroke. The platen 3<SP>1</SP> may have a chamfer 95, Fig. 7, along one edge to eliminate sharp .corners at the roots of the splines. In a further example the pitch line 79, Fig. 11, of the teeth is horizontal and the tops of the teeth 81a- 81g are cut off on a taper so that the leading teeth 81a just engage the work and gradually increase to the full height so that the teeth 81f are fully conjugate with the required splines. The trailing teeth 81g may be relieved by grinding off the flanks. The platens are moved by hydraulic cylinders 23, 24 operated from a common control valve to operate in unison. Helical splines may be formed by cutting diagonal teeth on the platens and herringbone splines may be formed by placing two platens side by side. More than one set of splines may be rolled simultaneously by using pairs of tools and in knurling where accuracy is not required the work may be allowed to roll loose without support from the centres 5, 9.
Patent GB-413497-A (GB)
Title: Manufacture of arseno-compounds
IPC: C07F9/70
Filed: 1933-07-24
Abstract: Asymmetrical arseno compounds of the kind described in Specifications 360,957 and 400,776 are prepared by heating in an alkaline solution two different symmetrical arseno compounds, one of which contains two oxyacetic acid residues and at least one contains two substituted amino groups or two pyridine or quinoline rings.  The reaction takes place with exchange of the arseno components.  According to the examples, (1) 3 : 3<1>-diacetyldiamino-4 : 4<1>-dihydroxybenzene is heated with 4 : 4<1>-diacetyldiaminoarseno-2:2<1>-phenoxyacetate (prepared by reducing 4-acetylaminobenzene-1-arsonic acid-2-oxyacetic acid with hypophosphorous acid); (2) 3 : 3<1>-diacetyldiamino-4 : 4<1>-dihydroxyarsenobenzene is heated with 3 : 3<1>-diacetyldiaminoarseno-4 : 4<1>-phenoxyacetate (made by reducing 3-acetylaminobenzene-1-arsonic acid-4-oxyacetic acid); (3) 2 : 2<1>-dihydroxy-5 : 5<1>-arsenopyridine (see Specification 255,892, [Class 2 (iii)], and 4:4<1>-diacetyldiaminoarseno-2 : 2<1>-phenoxyacetate are heated together; (4) 2 : 2<1>-dihydroxy-3 : 3<1>-diacetyldiamino-5 : 5<1>-arsenopyridine is heated with 1 : 1<1> - dimethyl - 5 : 5<1> - arsenobenzimidazole - 2 : 2<1> - dioxyacetate (prepared by reducing 1-methyl-2-hydroxyacetic acid-benzimidazole-5-arsonic acid).  Specification 250,577, [Class 2 (iii)], also is referred to.
Patent GB-419970-A (GB)
Title: Improvements in or relating to thermionic valve circuit arrangements
IPC: H03B7/04
Filed: 1933-07-24
Abstract: 419,970. Valve generating and amplifying circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. July 24, 1933, No. 20861. Convention date, July 22, 1932. [Classes 39 (i) and 40 (v).] A valve 1 with two or more grids has the inner grid held at a substantial negative voltage, whilst another electrode, such as the second grid, exhibits secondary emission with the result that the circuit of this electrode has a negative characteristic and its current i always flows against the applied positive voltage V. The high negative bias cuts off any current to the outer electrodes until the second grid is given a positive voltage high enough to cause it to lose more electrons than it receives. Fig. 3 shows the valve and Fig. 2 its negativeresistance characteristic. For generating oscillations, Fig. 5, or for use in an amplifier, Fig. 8, the negative-resistance is connected in series in the plate circuit of a triode valve 2, the plate characteristic of which is approximately the mirror image of Fig. 2. The characteristic of the series combination is a steeply-rising curve, indicating low resistance, preferably of a negative sign. A parallel-tuned circuit 3, 4 can be sustained in oscillation even if the circuit is considerably damped. When the circuit is used as an amplifier, Fig. 8, the input is applied to the grid of the triode valve 2, the plate circuit of which includes the negative resistance device. By approximately matching the positive resistance characteristic of the triode 2 with the negative resistance characteristic of the other valve 1, high current and voltage changes in the plate circuit result from small input voltages.
Patent GB-863469-A (GB)
Title: Improvements in or relating to chocolate moulding or enrobing machines
IPC: A23G1/18
Filed: 1957-07-02
Abstract: 863,469. Conditioning and coating chocolate. SOLLICH, R. July 2, 1957 [July 3, 1956], No. 20861/67. Class 28 (1). Cakes 7 on a conveyer are coated with chocolate by a swinging depositor 9, some or all of the drips b<SP>1</SP> being caught and collected into a chamber 11 leading to a mixing chamber 13 where a feed screw 14 adds unconditioned chocolate from the storage 2. The mixture then may pass through a cooler 15 controlled by a thermometer 17 in the feed pipe 16 to the depositor 9. All the drips first pass through a vibrating screen 18, some of the drips b<SP>11</SP> falling directly into the storage tank 2 which has a steam jacket 3 and an agitator 4. The depositor is partially closed by a bottom 19 leaving slots 20 small enough to build up an air pressure in the depositor so that the chocolate strikes the cakes 7 with some force. The storage tank 2 is fed from a hopper 21. By mixing some of the drips of conditioned chocolate with the unconditioned chocolate in 2, a less crystalline chocolate coating is obtained.
Patent GB-952144-A (GB)
Title: Improvements in devices for forming and fitting wire staples
IPC: B21F33/04
Filed: 1962-05-31
Abstract: 952,144. Stapling machines. SPUEHL A.G. May 31, 1962 [June 10, 1961], No. 20952/62. Heading B4C. A machine for forming and fitting wire staples 8 into a workpiece, such as securing padding 1 to a spring-interior mattress 2, comprises a movable cutter 34 and fixed cutter 36 for cutting off a piece of wire 30 supplied to the machine, a first slide 20 adapted, upon an initial advance movement, to preform the piece of wire into a U-shape, a movable retaining member 45 which supports the wire piece during the preforming operation, and is then moved, against the action of the spring 49, out of the path of the preformed staple by abutment of the first slide against the retaining member during further advance movement, and a second slide 21 adapted by an advance movement triggered off by a still further advance movement of the first slide, to drive the staple through the work piece against a die 27 causing the ends of the staple legs to be re-bent. The slides 20, 21 are connected to the piston-rods 14, 15 of pneumatically-actuated rams 12, 13, respectively. In operation, the wire is fed from a reel through a guide 38 until it abuts a stop 39, the driving mechanism for the reel being located in a housing 6 on which the stapling machine is mounted; the mechanism also, via a shaft 65, Fig. 10, rotates a cam 64. As the cam rotates, it actuates a valve 62 which feeds compressed air, via a pipe 69, to the upper end of the ram 12 thus causing the slide 20 to move downwardly. The first part of the movement causes a piece of wire to be cut off and then formed into a staple by contact of the bottom of the slide with the member 45. Continued movement of the slide then causes an abutment 32 thereon to contact a spring-loaded latch 55 mounted on the member 45 and thereby move the latter away from the staple, until the latch leaves the abutment and causes the member 45 to return so that its bottom face is now above the top limb of the staple. At this point in the travel of the slide 20, a leaf-spring 24 actuates a valve 26 and causes air to be fed, via a pipe 71, to the upper end of the ram 13, thereby driving the slide 21 downwardly so that the staple is driven into the padding 1 of the mattress, the ends of the staple being bent over by the die 27. After a certain rotation of the shaft 65, the cam again actuates the valve 63 which reverses the compressed air feed to the ram so that the slides 20, 21 are both returned to their initial position.
Patent GB-281364-A (GB)
Title: Improvements in or relating to the art of working metal
IPC: B21B5/00
Filed: 1926-08-26
Abstract: 281,364. Coryell, W. C. Aug. 26, 1926. Rolling annular bodies; stretching; cold-rolling.- Metal is elongated by rolling between rolls 11, 12 which apply a compression approaching the elastic limit and simultaneously applying a tension which also approaches the elastic limit of the material. the resultant force exceeding the elastic limit. The tension may be applied to the material at both ends or at the exit side of the rolls only. Fig. 3 shows a method of applying tension to a complete band of metal by a pulley 13, while the band is rolled in rolls 11, 12. By this method, elongations of 1000 per cent to 3000 per cent may be obtained without re-annealing. Reference has been directed by the Comptroller to Specification 9382/86.
Patent GB-1127473-A (GB)
Title: Improvements in or relating to bats
Inventor: CARLTON WILLIAM CHARLES
IPC: A63B59/04
Filed: 1966-05-12
Abstract: 1,127,473. Table tennis &c. bats. CARLTON TYRE SAVING CO. Ltd. 20 April, 1967 [12 May, 1966], No. 21139/66. Heading A6D. A table tennis or padder bat comprises two members to make up the full thickness of the blade, either or both having a surface with recesses 6 and the two members secured together so that at least one cavity is formed within the blade. The bat may be made of plywood or moulded plastics and steel slugs may be placed in the cavities to weight the bat.
Patent GB-795335-A (GB)
Title: Preparation of elastomeric cellular materials
IPC: C08J9/00
Filed: 1956-07-09
Abstract: In the preparation of an elastomeric cellular material by reacting a polymeric material containing a plurality of active hydrogen atoms, a polyisocyanate and water, from 0.002 to 0.02 per cent of a silicone oil is added to the reaction mixture.  When cushions are made from this material there is thus less movement of the upper part of the cushion parallel to the lower part when a horizontal force is applied.  The polymeric material may be a linear or branched polyester or polyesteramide or a polyalkylene ether glycol.  The polyisocyanate may be p-phenylene, m-phenylene, 1.5-naphthalene, 4.41-diphenylenemethane, tolyene or hexamethylene diisocyanate.  The silicone oil has the formula: <FORM:0795335/IV (a)/1> wherein R is an organic hydrocarbon radical (e.g. methyl or ethyl).  In Examples (2)-(5), to a prepolymer made by heating a polyester derived from adipic acid, ethylene glycol, diethylene glycol and 1.4-butanediol with tolylene diisocyanate there was added first tolylenediisocyanate and castor oil, then an activator mixture comprising the above polyester, water, N-methylmorpholine an alkylated aryl polyether alcohol (as emulsifier) and a condensate of 4 mols. of butyraldehyde and 1 mol. of aniline, and finally a silicone oil; the complete reaction mixture was then poured into a mould where it was permitted to expand and cure and was then heated to complete the cure; (7), (8) and (9), similar to Examples 2-5, except that the prepolymer is prepared by heating a mixture of the polyester, the tolylene diisocyanate and 1.4-butane diol.
Patent GB-441394-A (GB)
Title: Improvements in or relating to vibrator converters for electric currents
IPC: H02M3/42
Filed: 1934-07-19
Abstract: 441,394. Commutator switching arrangements; electromagnetic interrupters. STANDARD TELEPHONES & CABLES, Ltd., and TERVET, E. J., 63, Aldwych, London. July 19, 1934, No. 21184. [Class 38 (ii)] [See also Group XXXVII] A D.C. voltage changer for supplying, for example, the high tension circuits of wireless sets from car batteries comprises a transformer 5 having its primary and secondary windings centre-tapped and associated with a vibratory commutator switching device 2 which is provided with a set of contacts 3, 4 for energizing alternately the two halves of the primary winding, and a set of contacts 6, 7 for effecting full wave rectification of the secondary current. The movable element is maintained in vibration by a winding 1 associated with a further contact 9 whereby it is intermittently short-circuited. Shortcircuit current is limited by a resistance 10 or by connecting the winding 1 in series with one of the transformer windings. Figs. 2 and 3 show the construction of the commutator switching device which comprises a base plate 13 supporting a pair of frame members 12 having a core 11 and winding 1 disposed between them at one end and being cut away at the other end to form polepieces 17. A vibrating armature 2 carrying the movable contacts is mounted on a spring blade 22 between the polepieces and the fixed contacts are carried on a pair of terminal plates 18 secured on opposite sides of the frame members 12 adjacent the polepieces.
Patent GB-1284708-A (GB)
Title: Electron beam apparatus
IPC: H01J37/28
Filed: 1971-04-19
Abstract: 1284708 Electron microscopes SIEMENS AG 19 April 1971 [7 Feb 1970] 21245/71 Heading HID In a scanning electron microscope an electric field is provided to remove secondary electrons and back-scattered electrons from the vicinity of the specimen so that the output derived from the specimen current corresponds to the secondary electron emission. In Fig. 1 an electrode E2 is arranged in front of the specimen P and biased positively by a source Q2, and is in the form of a disc with an aperture large enough not to affect the electron beam E. The output signal is derived across the resistance R and varies inversely with the secondary emission from the specimen; the signal may be inverted to give a positive image. The specimen may be tiltable towards some other detecting system, e.g. an X-ray detector, and a magnetic field may be applied parallel to the surface of the specimen to assist in the removal of secondary electrons. In a modification, Fig. 2 (not shown), electrode E2 is omitted and the positive terminal of Q1 is connected to the envelope W and to the lens L. In another modification, Fig. 3 (not shown), the electrode E2 is in the form of a plate with a knife edge and is movable parallel to the plane of the specimen to adjust the contrast by altering the direction of the electric field. A similar third electrode (E3) may also be provided and is connected to a negative potential relative to the specimen; it may be stationary or may be moved along with the second'electrode E2. The electric field and/or the magnetic field at the surface of the specimen may be varied periodically by a function generator which also controls a phase-sensitive detector in the output circuit. In one such arrangement, Fig.4 (not shown), the function generator is connected between E2 and a plate electrode arranged behind the specimen; two resistances are connected across the function generator and their junction is earthed. The output is derived from the specimen and is fed via a capacitor to the phase-sensitive detector.
Patent GB-630947-A (GB)
Title: Electric ventilator fan
IPC: F04D25/08
Filed: 1947-08-05
Abstract: 630,947. Ventilators. WELCH, W. W. Aug. 5, 1947, No. 21246. [Class 137] [Also in Group XXVI] A cylindrical support for a ventilating fan 10 and motor 12 in a wall aperture comprises a number of hoops 22 on both sides of the wall secured together and to end plates 40, 46, by rods 50, the hoops being spaced by bosses 24 providing annular air paths. The structure is mounted on an apertured baffle 30 having extensible side panels to fit windows or other openings of various widths, the rods 50 passing through inwardly directed ears round the margin of the aperture. A conical deflector 44 is mounted at the outlet end to. disperse the air radially; the hoops are oppositely inclined at the inlet and outlet sides of the baffle, air being drawn in radially and through perforations in end plate 40.
Patent GB-645063-A (GB)
Title: Improvements in or relating to knitting machines
IPC: D04B9/18
Filed: 1947-08-06
Abstract: 645,063. Knitting-machines. HEMPHILL CO. Aug. 6, 1947, No. 21401. Convention date, March 4, 1940. [Class 74 (ii)] In an independent-needle circular machine there are provided means whereby elastic and non-elastic yarns are fed at separate feeding points, spaced needles only take and draw the elastic yarn into independent knitted stitches and needles are raised to a yarn-taking but not to a latch-clearing position prior to taking the non-elastic yarn, and pattern-controlled supplemental means movable to and from active position for raising spaced needles only to clear at the non-elastic yarn feed, whereby some needles knit and others tuck. In utilizing a wrap machine to form a tuck edge on a fabric such as a stocking top, spaced jacks, selected by action of the top one of plungers 28 or 129 (normally used to select jacks, and thus their needles, for wrapping) on long butts 24 or the topmost of frangible butts 126, are raised by the action of wrap cam 29 on master butts 26 or of wrap cam 131, supplemented by a patterncontrolled cam 133, on master butts 125, so that their needles clear and take, at the auxiliary feed, an elastic yarn e or e<SP>1</SP>, which is drawn into loops by pattern-controlled stitch- and centre sinker-cams 39 and 66 or 111 and 204; subsequently, these selected jacks are raised by a pattern-controlled cam or cams 40 or 155, 156, 151, so that the needles again clear and take non-elastic yarn y or y<SP>1</SP>, whilst the remaining needles are raised to a tucking level by cam parts 19 and 18 or by cam 215. The front stitch cam 11 or 104, Figs. 14 and 39 (not shown) is moved out of action during the above operations. In the form of Fig. 38, a second set of plungers 130 makes possible " colour side of colour " and " colour within colour." Specifications 20101/09, [Class 74], 300,605, [Class 74 (ii)], 528,673 and U.S.A. Specification 2,208,698 are referred to.