baber/WOPTO huggingface dataset:
Patent GB-210896-A (GB)
Title: Improvements in automatic electric circuit breakers
IPC: H01H71/18
Filed: 1922-11-15
Abstract: 210,896. Clossmann, J. von, and Halberstadt, H. Nov. 15, 1922. Switches, partly electromagnetic; thermal switches; magnetic blow-outs.- A thermal switch, adapted to be released by hand, or by the heating effect of the current, comprises a strip of spring carrying at its free end a contact engaging a fixed contact and adapted to expand longitudinally to break circuit. As shown in Fig. 1, the expanding strip a is secured at b and sprung against a fixed contact c, from which it may be moved also by hand, or by a finger f moving the contact c, as shown in Fig. 2. The wire a may have a loop e of one or more convolutions whereby it is secured, and the magnetic effect of the current assists the opening movement; the stationary end b may engage a rock g for setting the tension. For varying the maximum current, a resistance may shunt the loop e and a fuse may also be incorporated. For use with alternating current, a choking coil or condenser may shunt the loop e. The dimensions of the loop itself may be varied to vary the time taken for opening the circuit.
Patent GB-458882-A (GB)
Title: Improvements in and relating to vacuum pans for boiling sugar and like purposes
IPC: C13B25/00
Filed: 1935-11-15
Abstract: <PICT:0458882/III/1> A vacuum pan 1 for boiling sugar and the like has a vertical tubular shaft 5 extending into the pan and carrying spaced heating and agitating elements 3, 4.  Part of the shaft is double-walled to form an annular passage 10 round a central bore 12 serving as a heating fluid conduit to at least one element 3, and the passage 10 communicates with a compartment 11 formed by partitioning another part 6 of the shaft and conducting heating fluid to at least one other element 3.  The pan has a calandria 2 between the steam-heated elements 3, 4 which may each comprise a multi-tubular structure or a set of radial field tubes on a rotary sectional shaft. Steam admitted by pipes 13, 33 to the conduits 10, 12 passes therefrom by ports 29, 30 to outlet pipes 23, 26.
Patent GB-784523-A (GB)
Title: Rubber mats for floors
IPC: A47G27/02
Filed: 1954-11-02
Abstract: 784,523. Rubber mats for floors. ISLES, H. T., and GIUSTI, G. Jan. 30, 1956 [Nov. 2, 1954], No. 31683/54. Drawings to Specication. Class 142(4) Mats are made by interweaving rubber strips cut from discarded motor tyres. A tyre is cut circumferentially to separate the tread portion from the side portions and each of the side portions is then cut to form a continuous strip which is subsequently cut into short lengths and interwoven. An edging formed of upper and lower strips secured by adhesive and/or stitching is provided. The mats may be of various shapes.
Patent GB-837962-A (GB)
Title: Improvements relating to the manufacture of multiple contact devices
Inventor: DEAKIN STANLEY THOMAS
IPC: H05K13/00
Filed: 1957-10-10
Abstract: In a method of assembling electrical contact members on a circuit board, the members are first arranged in a pattern on an adhesive strip which is placed on the circuit board with the contacts aligned with apertures therein.  The contacts are then pressed into the apertures and the adhesive strip is removed.  The adhesive may be a mixture of pitch, wood ash and tallow in the proportions 5 : 1 : 1 by weight.  The tallow is mixed with the pitch and the wood ash is then added.  Specification 832,402 is referred to.
Patent GB-300401-A (GB)
Title: Improvements in the manufacture of heavy metal azides
IPC: C06B35/00
Filed: 1927-11-25
Abstract: 300,401. Matter, O. Nov. 25, 1927. Sodium, lead, and other azides.-Sodium azide is freed from carbonate, in order that it may be used for the preparation of lead or other heavy metal azide free from carbonate, by the addition to its aqueous solution of hydrates or salts of alkaline earth metals, such as baryta. The purified solution may be treated to separate solid sodium azide, or used directly to form lead azide.
Patent GB-405427-A (GB)
Title: An improved grinding or honing tool for piston pin and like bearings
IPC: B24B33/08
Filed: 1932-11-10
Abstract: 405,427. Honing bearings. DEHN, F. B., 103, Kingsway, London.-(Automotive Maintenance Machinery Co. ; 816, West Washington Boulevard, Chicago, U.S.A.) Nov. 10, 1932, No. 31822. [Class 60.] A tool for honing bearings, particularly piston pin bearings, comprises end members connected by posts and guiding abrasive carriers expanded by conical spreaders engaging the posts to prevent rotation of the spreaders relatively to the tool. End members 13, 14 are connected by posts 15 and are formed with radial slots to slidably engage the ends of T- shaped abrasive carriers 17 which are urged inwardly by spring rings 23. The inner edges of the carriers 17 are formed with inclines engaged by cones 19 shaped to engage the posts to prevent relative rotation. The cones are pinned to a rod moved endwise by a sleeve 22 threaded to engage a boss on the end member 14. Each of the carriers 17 is faced with emery cloth 30, the cloth being carried by a metal support 29 slid along the head of the carrier, the edges of the cloth being held by turned back side edges of the support 29. A member 31 is slidable and rotatable on the driven shaft 24 of the tool, and has a conical portion for engagement with the end of a bearing to serve as a guide. Specification 405,323 is referred to.
Patent GB-913616-A (GB)
Title: Device for levelling instruments
IPC: F16C23/10
Filed: 1960-09-16
Abstract: 913,616. Levelling-heads. GAZZARD, C. W. G. Sept. 11, 1961 [Sept. 16, 1960], No. 31947/60. Class 97 (2). [Also in Group XIV] In a levelling-head, the inclination of an instrument carrying spindle A, about a fixed spherical bearing B, is varied by displacing spherical bearing C in a horizontal plane by rotation of eccentric bushes D, E. Arms H and J clamp the spherical bearings C and B.
Patent GB-665278-A (GB)
Title: Improvements in or relating to cigarette filter tips
Inventor: TAYLOR WILLIAM IVAN
IPC: A24D3/10
Filed: 1948-12-10
Abstract: 665,278. Filter wads for cigarettes. BRITISH CELANESE, Ltd. Dec. 8, 1949 [Dec. 10, 1948], No. 32020//48. Class 130. [Also in Groups V, VIII and XXVIII] A cigarette filter tip comprises a rod of aligned crinkled cellulose acetate fibres bonded together by a film of water soluble cellulose derivative. The rod is formed by dry spinning a solution of cellulose acetate in acetone through a jet having a plurality of holes of 0.055 millimetre diameter to produce fibres having fifteen crinkles per inch and of 16. denier. The fibres are corded and the sliver soaked in an aqueous solution of methyl cellulose 'and whilst wet drawn through three dies of successively smaller diameter to form a rod which after drying to effect bonding of the fibres is cut into appropriate lengths. Specification 613,716, [Group VIII], is referred to.
Patent GB-768583-A (GB)
Title: Improvements relating to foot valves for compressed air vehicle braking systems
IPC: B60T15/04
Filed: 1954-11-05
Abstract: 768,583. Fluid-pressure brakes. WESTING- HOUSE BRAKE & SIGNAL CO., Ltd., and SIMMONS, A. W. Oct. 12, 1955 [Nov. 5, 1954], No. 32060/54. Class 103 (1). In a foot valve for compressed air vehicle braking systems for controlling in one operation of a pedal the independent operation of two separate braking circuits such that failure of a hose connection affects one group of cylinders only and effective braking is still achieved by means of the other brake cylinder or cylinders, characterized in that a thrust rod is provided between the first and second pistons in the foot valve whereby operating thrust is transmitted to the second piston if fluid pressure fails to build up in the pressure chamber as a result of movement of the first piston, the length of the thrust rod being such that it is engaged by both pistons only after movement of the first piston sufficient to push the first valve off its seat. In the embodiment illustrated in Fig. 1, when the operating pedal is depressed the pin 25 compresses spring 26 causing piston 2 to move and open valve member 4. This allows air under pressure to pass from the main reservoir through passage 11 to the rear wheel brake cylinders through passage 12. At the same time air passes through restricted passage 22 until pressure in the reaction chamber 27 builds up sufficiently to force piston 2 to rise against a spring 26 into a lap position in which the pressure in the brake cylinders is proportional to the effort applied to the pin 25. At the same time air is admitted through the passage 24 to the pressure chamber 28 acting on the upper surface of piston 3 moving piston downwards to disengage valve member 5 from its seat, thereby admitting air from the second main reservoir to the front wheel brake cylinders connected to passage 21. Passage 23 acts in a similar manner to passage 22 as described above. Should a hose failure occur in the front braking circuit, air supplied to the rear wheel brake cylinders will not be affected. In the event of a hose failure in the rear braking circuit air pressure will not build up in passage 12, chamber 27 or chamber 28 with the result that piston 2 does not oppose thrust spring 26. The effort applied to the pin 25 is therefore transmitted through piston 2, thrust rod 29 to piston 3 thereby causing air to be supplied to the front group of brake cylinders in accordance with the effort supplied to the pin 25. In the position illustrated, the wheel brake cylinders are exhausted to atmosphere via passage 10 formed in piston rod of piston 2 and through passage 17 formed in the piston rod of piston 3 and thence to atmosphere through chamber 18 and port 19. An alternative construction is described in the Specification in which the bore in the piston rod of the second piston 3 extends through the piston and opens into the pressure chamber 28 wherein is housed a check valve which obturates said bore when the fluid pressure in the pressure chamber exceeds that in the bore. Specification 751,578 is referred to.
Patent GB-227983-A (GB)
Title: Improvements in casement stays for windows
IPC: E05C17/18
Filed: 1923-12-21
Abstract: 227,983. Thompson, H. A., Barnes, F. W., and Nettlefold &. Sons, Ltd. Dec. 21, 1923. Stays.-The stay-bar A is guided by a member D loosely mounted and Vertically movable on a pin E secured to the window sill by a plate F. To secure the stay in another adjusted position, it is first released from the pin E by lifting one end of the stay until the member D has been moved vertically a distance to enable the stay to slide above the pin.
Patent GB-538946-A (GB)
Title: Improvements in electric filter circuits
IPC: H03H9/54
Filed: 1939-12-13
Abstract: 538,946. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and STARR, A. T. Dec. 13, 1939, No. 32162. [Class 40 (iii)]  An unbalanced wave filter comprises a threeelectrode crystal which provides two shunt arms, the two electrodes on one side being bridged by a series impedance Z. An additional pair of series or shunt impedances Z 1  as shown may be provided in certain cases. The electrodes may be formed by partial plating, as described in Specification 529,131, and an earthed screen may, if desired, be placed between the two electrodes on one side to reduce any direct capacitance between them. The filters are shown to be equivalent to a balanced lattice filter. The impedances Z, Z, may take various forms, such as crystals, inductances, capacitances or combinations of such elements, according to the requirements of the filter. In particular, if Z is a crystal and Z 1  an inductance (either series or shunt) a much lower image impedance can be obtained than with the equivalent lattice form. In another arrangement, Z is a series-tuned circuit with parallel capacitance, and Z 1  = 0, a broad pass-band being obtained of which the upper cut-off may be adjusted by varying the parallel capacitance. Reference has been directed by the Comptroller to Specification 531,662.
Patent GB-270597-A (GB)
Title: Improvements in or relating to machines for screwing nuts upon bolts or the like
IPC: B23P19/00
Filed: 1926-12-20
Abstract: 270,597. Fries, A. de. Dec. 20, 1926. Bolts and nuts, assembling.-In a machine for screwing nuts on bolts &c., which may be used as an attachment to a boltthreading machine or by itself, the nuts are supplied continuously or intermittently to a guide 7 so that the lowermost nuts are fed by the weight of those above them to a rotary sleeve 2 by which they are screwed on the bolts &c. (not shown). The nuts are a loose fit in the guide and sleeve and are further guided by a bent rod 9. The bore of the sleeva 2 may be circular if the friction of its lower surface on the nuts is sufficient to screw them on the bolts, or may be polygonal to fit the nuts, the rear end then merging into a circular section to facilitate entrance of the nuts. The foremost nut is position by spring fingers 5 which allow a nut to be withdrawn with its bolt when it is Screwed thereon. Instead of the internal guide 9 for the nuts an external guide in the form of a bent tube may be provided to embrace the nuts loosely. The sleeve 2 is rotated by a belt drive 11 from a motor 12 or a countershaft. The guide 7, which may be circular or polygonal in section, is adjustably mounted by means of a slide 6 and screw 8.
Patent GB-641375-A (GB)
Title: Improvements relating to the pressure treatment of materials for changing the gas content thereof
IPC: B28B3/22
Filed: 1947-12-06
Abstract: 641,375. De-airing plastic material. JOHNSON, J. A. Dec. 6, 1947, No. 32248. Convention date, Aug. 3, 1940. [Class 86] The gas content of plastic material is reduced while an elongated tubular column of the material is travelling lengthwise along the inner surface of an elongated tube to which rotary movement is imparted. As shown, plastic material is discharged from a pug mill 50 and passes through an inlet 27 of a vacuum tight casing 11 into a tube 17 which is mounted for rotation by a motor 91, sprockets 90, 93, and chain 94 about an eccentric axis. The input end of the tube 17 receives a tubular inlet extension 20 which carries a helical thread on its outer surface, which in combination with the eccentric rotation of the tube 17 maintains a clearance for passage of gas from the tube whilst preventing egress of plastic material. Within the tube 17 and disposed at an angle to its axis of rotation is a fixed feed screw 34 comprising angled blades 36, which urge the plastic material along the tube whilst the centrifugal force of rotation holds the material in contact with the wall of the tube, thus providing kneading, pressure and a relatively large exposed surface area for removal of the gas. Gas is drawn off by means of the pump 60. The discharge end of the tube 17 has a helical thread upon its outer surface which enters, with radial clearance, the end of a fixed tube 21, and carries a feed screw 42 which lies within the tube 21 at an angle and eccentric to the axis of rotation of the tube 17. Plastic material rotating with the tube 17 enters the tube 21 and is progressed therethrough by the action of the feed screw 42, whilst gradually losing its rotation. The angular displacement and eccentricity of the feed screw with respect to the axis of rotation maintains a central clearance for the removal of gas. The plastic material is expelled through a die 56. Tubular lining screens may be provided within the tubes to prevent material being forced backwards up the tubes.
Patent GB-446915-A (GB)
Title: Improvements in relating to the exhaust silencers of internal combustion engines
IPC: F02D9/04
Filed: 1934-11-09
Abstract: 446,915. Exhaust-silencers. GRIFFITH, A. A., and HELMORE, W., Royal Aircraft Establishment, South Farnborough, Hampshire. Nov. 9, 1934, No. 32258. [Class 7 (ii)] An exhaust - silencer 2 for an aircraft or other internal-combustion engine is provided with a forwardly - pointing valve - controlled air intake 5 whereby cold air may be caused to pass through the silencer by the forward movement of the engine when the engine throttle, to which the valve is coupled, is closed or partly closed. The air intake is controlled by a butterfly valve 6 operated by a lever 9 coupled to the throttle, the lever operating a valve 13 in a silencer cut - out pipe 11 also ; an overriding control may be provided so that the air intake can be opened before the cut-out opens. The air intake and the cut-out may each be controlled by two or more valves spaced apart in series and coupled together, as described in Specification 446,914.
Patent GB-229440-A (GB)
Title: Improvements in electric generating plant for constant current systems
IPC: H02K23/20
Filed: 1923-12-27
Abstract: 229,440. Austin, G., MacFarlane, J. C., and MacFarlane, W. A. Dec. 27, 1923. Exciting; cores and yokes.-In constant-current systems the generator 11 is excited by a separate exciter having a single armature 1, main and auxiliary poles M<1>, M<2>, A<1>, A<2>, main brushes M<3> and auxiliary brushes A<3>, field windings on the main poles in series with the line, and two separate additive windings on the auxiliary poles, one of these windings, 21, being an exciting winding connected to the auxiliary brushes, and the other, 31, a compensating winding in series with the generator field winding 12 and connected to the main brushes. A " stabilizing " winding 41 is also wound on the auxiliary poles and is connected in series with the exciter main field winding carrying the line current. The yoke is split circumferentially into portions 3, 4 by a nonmagnetic ring 5, thus dividing the main and auxiliary poles. The windings 21, 31 embrace the whole auxiliary pole, and the winding 41 for highly regenerative loads is wound separately and reversely around each part thereof, one portion assisting the windings 21, 31 and the other portion opposing them. The permeability of the pole-part carrying the opposing portion of the winding 41 is less than that of the other polepart. On ordinary loads the "stabilizing" winding is wound so that it wholly opposes the windings 21, 31. To prevent sparking during commutation the armature coils are given a fractional pitch.
Patent GB-604781-A (GB)
Title: Improvements in or relating to holders or carriers for bottles and like containers
IPC: B65D85/30
Filed: 1945-12-03
Abstract: 604,781. Bottle crates. MORRISONS ENGINEERING, Ltd., and PROCTOR. D. M. Dec. 3, 1945, No. 32576. [Class 18] A bottle crate comprises a single integral piece of sheet metal bent up at opposite ends to form a base A and end walls A<1>, A<2> and a bracing plate D interconnecting the end walls, spaced from the base and having openings to embrace the bottles. The plate may have openings D' having downwardly extending tongues D' or may be in the form of a rigid mesh or grid. Openings C or recesses C' may be provided in the base in alignment with the openings D<2>. The marginal side portions of the base A are bent downwardly to form foot flanges A' and the side margins A<4> of the end walls are bent inwardly to form reinforcing flanges. Angle plates B are provided to strengthen the corners and may have inwardly directed webs which support the base. An upper marginal portion E of each end wall is bent over to form a rim and a slot or finger grip may be provided adjacent to the rim. The finger grip E may be formed by bending back the material of the slot. The rim E may be cut away at its edges an amount equal to the thickness of a foot flange A<3> so that the crates may be more readily stacked.
Patent GB-325256-A (GB)
Title: Improvements in or connected with automatic, and turret or capstan lathes or machines
IPC: B23B29/16
Filed: 1928-11-08
Abstract: 325,256. Jones, W. H. Nov. 8, 1928. Turning.-A tool-box for an automatic turret &c. lathe for making articles such as rivets &c. from bar stock comprises a head portion 6 having a radial bracket 12 on which the tools 10, 11, are supported and a shank portion 3 for attachment to the turret &c. A sleeve 2 on the shank is secured thereto at the rear end only by a rivet 4. The head 6 is at some distance from the shank and clearance is provided at 2<xx> between the shank and sleeve in order to give the device flexibility and allow the tools to align themselves with work which is slightly eccentric. When producing work such as headed rivets 8 the roughly turned end of the bar-stock is finished by the radial tools 10, 11 resting on the bracket 12 and by an axial tool 20 secured in a central bore in the head by a screw 21. The tools 10, 11 are spaced by packing pieces 13, 13<x> which are positioned by pins 15, Fig. 3, thereon engaging a slot 16 in the bracket so that the tools may be adjusted without interfering with each other. A semi-cylindrical bush 5, interchangeable to suit the work being produced, is held in the head by a screw 7 to support the work during turning. The tools are set while the tool box is on a bench by placing a finished work-piece in the bush 5 and adjusting the tools into contact therewith. A slot 23, Fig. 1, provides access to the end of the tool 20 for setting or ejection and the tools 10, 11, are secured by screws 17 in a muff 18 surrounding the bracket 12. The tools 10, 11 may be formed separate as shown or may be in one piece, the packing pieces 13, 13x then being unnecessary. The tools may be adjusted by micrometer devices.
Patent GB-930459-A (GB)
Title: Diphenyl methane derivatives and methods for the preparation thereof
Inventor: TEMPLE RICHARD WILLIAM
IPC: C07D211/34
Filed: 1958-10-14
Abstract: The invention comprises compounds of the formula <FORM:0930459/IV(a)/1> (wherein Y is COOH, COOM, COOR1, COOR, CONH2 or CONR2R3 where M is an alkali metal, R1 is alkyl of at most 4 carbon atoms, R is (CH2)nNR2R3, n is 1, 2 or 3, R2 and R3 are alkyl groups each containing at most 4 carbon atoms or NR2R3 is a saturated heterocyclic ring optionally containing a further imino group or alkyl-substituted imino group or an oxygen atom, and A is 2-, 3- or 4-pyridyl which may be substituted by an alkyl group of at most 4 carbon atoms or, when Y is COOR, A may also be a phenyl group which may contain one or more chlorine or bromine atoms or alkyl or alkoxy groups of at most 5 carbon atoms) and their pharmaceutically acceptable acid-addition salts; and their preparation, when Y is COOH, by acid hydrolysis of a corresponding nitrile, the product being converted, if desired, to a salt by reaction with an equivalent amount of an alkali metal lower alkoxide, or, when Y is COOR1, by alcoholysis of a corresponding nitrile with the alcohol R1OH; or, when Y is COOR1 or CONR2R3, by reaction of an appropriate ester or substituted amide of diphenylacetic acid with an appropriate picolyl chloride; or, when Y is COO(CH2)nNR2R3, by refluxing the sodium or potassium salt of the corresponding acid with a compound Cl(CH2)n NR2R3; or, when Y is CONH2, by alkaline hydrolysis of the corresponding nitrile.  Esters wherein Y is COOR1 may also be hydrolysed to the corresponding acids.  Detailed examples are provided and a list of salt-forming inorganic and organic acids is given.  Nitriles of the formula <FORM:0930459/IV(a)/2> are prepared from diphenylacetonitrile and an appropriate picolyl chloride.  The diphenylmethane derivatives of the invention, which are stated to exhibit analgesic properties and some of which, viz those wherein Y is COOR and A is a phenyl or substituted phenyl group, are stated to be potentiators of various drugs which affect the central nervous system, may be made up into pharmaceutical compositions with suitable carriers or excipients.  In the Provisional Specification Y is additionally defined as CN and COR1, R2 and R3 as substituted alkyl groups, and A as an unsubstituted or alkyl substituted 2-imidazolinyl or 4-imidazolyl group; and there are also described a -(2-thiazolyl)-diphenyl-acetonitrile and the corresponding acid and amide.  The ketones wherein Y is COR1 are prepared by reaction of the nitriles with a Grignard reagent.  The thiazolyl-nitrile is prepared from 2-chlorothiazole and diphenylacetonitrile, and on hydrolysis it gives the amide.