baber/WOPTO huggingface dataset:
Patent GB-586960-A (GB)
Title: Improvements in or relating to abrading tools
IPC: B24D3/08
Filed: 1944-01-10
Abstract: An abrading tool comprises abrasive such as crushed diamonds, sapphires, corundum &c. dispersed throughout at least a portion of a sintered mixture of 75-90 per cent. cobalt and 10-25 per cent. copper, preferably 83.5 per cent. cobalt and 16.5 per cent. copper. In forming the tool, which is of the same general construction as that described in Specification 586,959, particles of metal are compressed in a space between a central member and sleeve by a plunger under a pressure of 20 tons per sq. in.  A mixture of abrasive and metal particles is then placed on top of the compressed metal, which may be dusted with copper, and another plunger, having the desired shape of end surface, compresses the mixture at a pressure of 60 tons per sq. in.  The compressed assembly is then heated to 2,500 DEG F. for five minutes in a neutral atmosphere, quenched in oil or otherwise hardened, and bonded to a support.ALSO:An abrading tool comprises abrasive such as crushed diamonds, sapphires, corundum &c., dispersed throughout at least a portion of a sintered mixture of 75-90 per cent. cobalt and 10-25 per cent. copper, preferably 83.5 per cent. cobalt and 16.5 per cent. copper.  In forming the tool, which is of the same general construction as that described in Specification 586,959, particles of metal are comprssed in a space between a central member and sleeve by a plunger under a pressure of 20 tons per sq. in.  A mixture of abrasive and metal particles is then placed on top of the compressed metal, which may be dusted with copper, and another plunger, having the desired shape of end surface, compresses the mixture at a pressure of 60 tons per sq. in.  The compressed assembly is then heated to 2,500 DEG F. for five minutes in a neutral atmosphere, quenched in oil or otherwise hardened, and bonded to a support.
Patent GB-122763-A (GB)
Title: Improvements in Methods of Shearing Metals.
IPC: B23D19/04
Filed: 1918-05-10
Abstract: 122,763. Bates, A. J., and Bates Expanding Steel Truss Co. May 10, 1918. Cutting expanded metal; dividing.-For shearing metals, e.g. steel, to form expanded metal, the cold steel 11 is subjected successively to pressure between a pair of shear elements as the rotary shear blades 3, Figs. 1 and 3, which are submitted to pressure in order to advance the elements towards each other after contact with the steel a distance substantially equal to one half the thickness of the metal. The shearing operation is completed in order to sever the fibres 10, Fig. 8, which connect the sheared part 8 to the main body of metal 7, by passing the treated metals between rollers 4, 5, which, in returning the part 8 to its original position, sever the connexion between it and the main body of metal.
Patent GB-313551-A (GB)
Title: Improvements in furnace grates
IPC: F23H3/02
Filed: 1928-03-14
Abstract: 313,551. Bennis, A. March 14, 1928. Grate.-A travelling grate is provided with hollow grate bars detachably mounted on carrier bars pivotally connected together and provided with air passages from and to which air passes to and from the hollow grate bars. As shown in Figs. 2 and 6, cold air supplied to transverse conduits 20 passes into longitudinal conduits 23 and thence into the compartments 27 of the carrier bars 25 on which are detachably mounted the grate bars 30. The air passes through passages 33 in the grate bars, enters the hot air conduit 28 of the carrier bar and then passes to longitudinal conduits 24 and transverse conduits 21 from which it mav be led to the fuel for combustion. Figs. 8, 9, and 10 show various ways of forming the hollow carrier bars and the passages in the grate bars supported on them. Instead of the air passing through the grate bars in parallel, it may pss through the bars in series, as shown in Figs. 11 and 12, the air being led from the passage 52 of the carrier bar 51 through a pipe 55 passing through a number of bars 54 and thence to the passage 53. Fig. 14 shows a portion of a grate having bars of the drop link type with passages 60 for the circulation of air connected to conduits 56, 57. In a further modification the pipes in the grate bar may be coiled. In the modification shown in Fig. 7, air is passed through the bars 30 from a longitudinal cold air duct 63 and vertical passage 65 and escapes from the carrier bar 25 to the hot air duct 64. In use the invention may be combined with the air-supply regulating means of Specifications 306,605 and 311,206.
Patent GB-535566-A (GB)
Title: Improvements in or relating to a thermal protective device for rotating heat engines
IPC: F01D5/08
Filed: 1940-05-02
Abstract: 535,566. Gas turbines. MASCHINENFABRIK OERLIKON. May 2, 1940, No. 7910. Convention.date, June 13, 1939. [Class 110 (iii)] Blades and other parts of gas turbines are covered.with.a layer of a heat insulating material and that layer is covered by a protecting layer.of a heat stable material. Fig. 6 shows the cross-section of a blade, 15 is the body of the blade of ordinary material 16 is a heat insulation layer and 17 is a protective covering. The sides of the rotor may be similarly covered. The blades may have integral cover portions and these may be used to support the covering layers under centrifugal force. The protective covering may be omitted at the outer surfaces of the cover portions or these surfaces may be left entirely uncovered and be cooled by air currents. The heat insulating material and the protective covering may be applied by spraying and the heat insulating, material may be applied by a pressing process.
Patent GB-231492-A (GB)
Title: Improvements in combined coat and muffler
IPC: A41D3/02
Filed: 1925-03-24
Abstract: 231,492. Buchalter, L. March 28, 1924, [Convention date]. Coats; mufflers.-Muffler sections 8 form part of an ordinary coat and are brought into use, as shown in Fig. 2, or tucked away, as shown in Fig. 3. The usual turned-in part 2 of the coat is turned in further than is usual, is severed along a line 4, and is shaped at 9 to correspond to the wearer's neck. The lining is extended to the line 12 and back under the muffler sections. The cut edge 5 is hemmed and press fastenings 11 may be added.
Patent GB-100912-A (GB)
Title: Improvements in Variable or Change Speed Gearing.
Inventor: DAVIES DAVID EDWARD
IPC: F16H3/083
Filed: 1916-06-06
Abstract: 100,912. Davies, D. E. June 6, 1916. Variable-speed toothed gearing.-In gearing for motor-vehicles &c., of the kind having a series of change-wheels adapted to be coupled singly to a shaft by expanding-ring friction clutches operated by a cam sliding longitudinally in or on the shaft, two or more cams are arranged in different radial planes and are so spaced apart that one only is in operation at the same time. Each cam controls a number of change-wheels and comes intc operation in cyclic order. The cams 7, 8 are formed on a sliding member 9 which rotates with the driving-shaft 2. The wheels 6<a>, 6<b>, &c. are in constant mesh with wheels 19<a>, 19<b>, &c. fixed to a countershaft 3. The wheel 6<a> is fixed to a driven sleeve 13 carrying a wheel 18, so that the shaft 2 can drive the sleeve 13 either directly through the wheel 6a or indirectly through a pair of the change-wheels 6<a>, 19<a>, &c. In a modification, the cams 7, 8 are formed on separate keys sliding in slots in a solid shaft 2.
Patent GB-1536845-A (GB)
Title: Generation of mathematical functions
IPC: G06F17/17
Filed: 1975-02-26
Abstract: 1536845 Interpolation BELL & HOWELL Ltd 18 Feb 1976 [26 Feb 1975] 8134/75 Heading G4A An mnth order interpolation is performed using m iterations of an nth order interpolation method. As described the value of a dependent variable y corresponding to a given value of an independent variable x, where y is a function of x and is described by a linear polynomial series of the eighth order with B i  a linear polynomial expression in x of the ith order and d i  a coefficient, is interpolated using two iterations of the fourth order interpolation method described in Specification 1,536,844. Nine function values at values of x given by x=0, #,  ... #, 1 are stored and a fourth order binary polynomial series interpolated by arranging exact fits at the five x values 0, , ¢, ¥, 1. The error or "residual need" beyond the fourth order approximation is thus Since the linear polynomial series employed is a binary polynomial series in which exact fits obtained at a given order are preserved at the next higher order, z may be factorized as where G 4  is a common fourth order polynomial and H l  is a specific polynomial of the ith order. For the given value of x, where g 4  is a constant. If, as may happen, H i = B i  for all i, the value of g 4  may be determined by entering into the apparatus of Fig. 11 the quantities 0, d 5 , d 6 , d 7  and d 8  instead of the quantities d 0 , d 1 , d 2 , d 3  and d 4  which would have been entered for a normal fourth order interpolation. In general however H i =B i  but g 4  may still be determined by a fourth order interpolation entering into the apparatus linear combinations of the quantities d i . It may also happen that G 4 =B 4 . In this case the eighth order interpolation is obtained by consolidating the term g 4 G 4  into the fourth order term, giving If the polynomials G 4  and B 4  are different it may be necessary to modify more than one of the coefficients d i  to consolidate the constant g 4 . In either case the result of a second fourth order interpolation performed using the modified coefficients d i  will yield a value of y which would have been obtained by using an eighth order interpolation. The method may be embodied in physical form such as in a programmed read-only memory, and is implemented by programming a computer or by hardware designed for the purpose. Details of such hardware are shown in Fig. 11, divisions being effected by transferring values from a random access memory 12 to shift registers 14, 16 and shifting the appropriate numbers of bit positions, and addition or subtraction of the values in shift registers 14, 16 being performed by a full adder 18. The Specification gives formulae whereby the modified coefficients d i  (i = 1 to 4) may be obtained from the values of y at x = #, #, # and # for entering into the apparatus for the first fourth order interpolation to obtain the constant g 4 . Extension to a sixteenth order interpolation performed using four iterations of the fourth order interpolation methld is briefly described.
Patent GB-450564-A (GB)
Title: The manufacture of monoazodyestuffs
IPC: C09B29/30
Filed: 1935-03-15
Abstract: Monoazo dyes are made by combining diazo compounds of amines of the formula <FORM:0450564/IV/1> in which X=an unsubstituted or substituted aromatic, araliphatic or aliphatic radicle containing at least three carbon atoms, which may form a ring system, Y=an aliphatic, hydroaromatic, or aromatic radicle or an alkoxy group, and the benzene nucleus may contain further substituents, the --NH2 group being in m- or p-position to the acylamino group) with acylaminonaphthol disulphonic acids of the general formula <FORM:0450564/IV/2> (in which R=H or an alkyl group, R1 for an unsubstituted or substituted aromatic or aliphatic radicle containing at least four carbon atoms which may form part of a ring system, and one Z=H and the other a SO3H group).  They yield bright yellowish red shades on wool and silk and may be used for making lakes.  In examples, dyes from the following components are described : 1-cyclohexylacetyl- or benzoyl-amino-4-aminobenzene, 1-p- or o-methylcyclohexylacetyl amino-4- or 3-aminobenzene, 1-cyclohexylmethoxy- or phenoxyacetylamino-4-aminobenzene, 1-cyclohexylpropionyl-, chloracetyl- or carbethoxy-amino-4-aminobenzene, 1-cyclohexylacetylamino-4-aminobenzene-2-sulphonic acid, 1-n-butylisobutyl-, benzyl-, phenyl-, or n-amyl-acetylamino-4-amino-benzene, 1-n-butylacetylamino-4-amino-2-(or 3-)methylbenzene, 1-propylacetyl-amino-3-aminobenzene; Y in the above formula may also be butyryl, alkoxy acetyl, o -halogenacetyl, hexahydrobenzoyl, or carbomethoxy; coupling components: the N-phenoxyacetyl-, N-(2<1>- or 4<1>-chlorphenoxyacetyl)-, N-(2<1> : 4<1>-dichlorophenoxyacetyl)-, N - nitrophenoxyacetyl)-, N-n-butoxyacetyl)-, p N-cyclohexyloxyacetyl)-, N-n-amyloxyacetyl)-, N-(o- or p-methylphenoxyacetyl)- and N-(o-chlorophenoxyacetyl) - N - ethyl - derivatives of K acid and the analogous derivatives of H acid. Specifications 313,110, [Class 2 (iii)], 340,640, and 420,775 are referred to.
Patent GB-573182-A (GB)
Title: Improvements in or relating to the detection of faults in articles of non-magnetic material
IPC: G01N27/90
Filed: 1943-05-21
Abstract: 573,182. Measuring physical qualities of materials. KING, A. J., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. May 21, 1943, No. 8147. [Class 37] Apparatus for the detection of faults in articles of non-ferrous electrically conducting material includes a scanning device which comprises an E-shaped magnetic core having on its central limb a coil B which is supplied with audio - frequency current from a suitable oscillator not shown. The outer limbs are provided with coils A, C which are of similar dimensions but are wound in opposite directions. Coils A and C are connected in series and to an audio-frequency responsive device such as a pair of telephones, not shown: In operation the device is moved over the surface of apiece of non-magnetic metal T and, provided the material is homogeneous, the eddy current pattern due to the coil B is symmetrical, thus causing equal and opposite voltages to be induced in coils A and C, so that no noise is heard in the telephones. If; however, the coils A and C are on opposite sides of a crack such as F, the eddy current pattern is disturbed and the audio-frequency note is heard in the telephones. Sensitivity is increased by tuning the coils A, B and C to the audio frequency. A visual detector such as a cathode ray oscillograph may be employed.
Patent GB-846520-A (GB)
Title: Apparatus for wet spinning and stretching artificial filamentary materials, particularly viscose rayon
IPC: D02J1/22
Filed: 1958-03-14
Abstract: <PICT:0846520/IV(a)/1> In apparatus for the production of artificial threads, particularly viscose rayon, by wetspinning of the kind in which the filaments, after leaving the coagulating bath, are continuously stretched by passing them in succession over two sets of rotating rollers, the second set having a higher peripheral speed than the first, and in which the filaments, during their passage from the first set of rollers to the second, pass through a bath of hot liquid, said bath is contained in a longitudinal horizontal closed cell having an inlet for the supply of liquid, an orifice at each end for the discharge of the liquid and the passage of the filaments and also at each end, a chamber into which the orifice at the end of the cell leads, which chamber is also provided in its opposite wall with an orifice for the passage of the filaments and, in its bottom wall, with an outlet for the discharge of the liquid which continuously flows into the chamber from the cell.  In the example, a bundle of filaments of regenerated cellulose, produced by the extrusion of viscose into a conventional coagulating bath, is withdrawn from the bath by a pair of co-acting rolls whose axes are horizontal and is drawn through a longitudinal horizontal closed cell 10 having an approximately elliptical cross-section and an internal height over four times its internal width.  The cell is provided with end chambers 11, 111 having nozzles 12, 121 aligned with the inlet and outlet holes 13, 131 for the filaments.  A liquid such as water at 95 DEG C. is introduced into the cell through the inlet 14 and is discharged from the chambers 11, 111 through the outlets 15, 151. Gases and vapours such as carbon bisulphide escape from the cell 10 through the outlet 16 in the top of the cell which slopes upwards to this outlet to prevent the trapping of any gases in the cell while spinning is in progress.  The chambers 11, 111 remain filled with bath liquid and thus prevent the building up of deposits of salts at the apertures 13, 131, damage to the filaments during their passage through the apertures thus being prevented.  The bundle of filaments travels from the outlet 131 of the stretching cell to a draw roll, the axis of which is vertical.
Patent GB-666895-A (GB)
Title: Improvements in and relating to shuttering for concrete building constructions
IPC: E04G15/06
Filed: 1949-03-25
Abstract: 666,895. Shuttering for cavity walls. SHIPWRIGHT, W. G. May 12, 1950. [March 25, 1949] No. 8222/49. Class 20(ii). Shuttering for a cavity in a cavity wall comprises a pair of plates 14 having flanges 15 at the top edges overlapping one another and havi n g registering slots 16 through which extends a member for forcing the plates apart or releasing them. In Fig. 1 this member is a strip 17 which is turned edgwise to force the plates apart. In Fig. 5 the member comprises two strips 21 joined by pins carrying rollers 23 adapted to be forced between protuberances 29 on the plates to force them apart.
Patent GB-635003-A (GB)
Title: Improvements in or relating to air distributing devices
IPC: F24F13/075
Filed: 1947-03-27
Abstract: 635,003. Ventilators ; valves for ventilation. AKTIEBOLAGET SVENSKA FLAKTFABRIKEN, March 27, 1947, No. 8378. Convention date, March 28, 1946. [Class 137] An inlet ventilator comprises parallel adjoining cylindrical bodies 7 (Fig. 7) adjustable about their axes in a frame 6 and having through channels 9. As shown in Fig. 7, the bodies 7 are'pressed together by yieldable members 8 e.g. of felt. The top and bottom frame members may be channels (Fig. 15), or have holes which receive stub-like pivots (not shown) on the ends of the bodies. Each body may have a single elongated channel 9 (Fig. 7) or sloping circular holes (Fig. 17). The body shown in Fig. 7 may comprise two segmental bars connected at their ends by distance pieces e.g. by nailing or pasting. In a modification (Fig. 22) two bars 21, 22 are independently rotatable between discs 23, 24 and rings 27, 28 so as to vary the shape of the through channel 9b. On the pressure side of the ventilator are two air-directing metal plates 10a, 106 (Fig. 15) independently rotatable like the parts of a hinge on a shaft 11 which is slidable in slots 12 of supports 13. Alternatively, the plates 10a, 10b have separate shafts which may be parallel and have their ends journalled in cubes (not shown) mounted in the slots 12. The plates 10a, 10b can shut off the ventilator. They may be replaced by a single plate (not shown) with rounded edges. Pivoted-flap ventilators. The Specification also describes and illustrates what is stated to be a known type of ventilator comprising a series of independently pivoted horizontal louvres behind a similar series of vertical louvres.
Patent GB-564039-A (GB)
Title: Improvements in or relating to drawing drums for wire-drawing machines
IPC: B21C1/14
Filed: 1943-05-26
Abstract: 564,039. Drawing wire. BARRON, C. A., and BARRON, H. D. May 26, 1943, No. 8389. [Class 83 (iv)] The wire forwarding surface of a drawing drum consists of an annular series of rollers mounted loosely on pins on a driving-plate. If the tension in the wire increases so that there is danger of slip, the rollers are forced inwards against a fixed drum and commence to roll on the surface thereof increasing the forwarding speed until normal conditions are restored. A driving shaft b carries a plate a carrying an annular series of pivots c on which rollers d are loosely mounted, if desired with interposed bushes e. A fixed drum f is mounted in proximity to the rollers, but when the tension on the wire is low, centrifugal force keeps the rollers clear of the drum f and they do not rotate, the wire then being forwarded by the pull from the following drum. To prevent the wire from being marked by the rollers these may be surrounded by a split ring m which forms the forwarding surface. The drum is cooled by liquid supplied at i and discharged by a series of jets j. In a modification, the drum f is arranged to be driven in either direction further to modify the speed control. The rollers may be arranged in a coaxial series of short sections and then may be mounted in two groups to rotate at different speeds.
Patent GB-1133139-A (GB)
Title: Step-by-step mechanism for rolled stock cooling, hardening and/or transporting devices, formed by spoked wheels rotatable about a horizontal shaft
IPC: F16H31/00
Filed: 1966-02-25
Abstract: 1,133,139. Ratchet gearing. SIEMAG SIEGENER MASCHINENBAU G.m.b.H. 25 Feb., 1966 [25 Feb., 1965], No. 8470/66. Headings F2D and F2Q. [Also in Division B3] A two-speed ratchet gear for the step-by-step driving of rolled metal stock cooling, hardening, or transporting devices comprises rockers 5, 19 pivoted about a shaft 1, to which a ratchet wheel 2 is secured, for angular oscillation under the control of drive means 8, 20, respectively, a pawl 6 on the rocker 5 movable by an actuator 10 into and out of engagement with the ratchet wheel during a driving stroke and a return stroke respectively, and an opposed pair of pawls 11, 12 on the rocker 19 movable by actuators 15, 16 into engagement with the ratchet wheel during the return stroke of the pawl 6 either to lock the ratchet wheel, the rocker 19 remaining stationary, or to impart a second step movement to the ratchet wheel during the return stroke of the pawl 6 to double the mean speed of the shaft 1. The driving means 8, 20 and actuators 10, 15, 16 may be hydraulic, electric, electro-pneumatic or electrohydraulic, and may be subject to an overall automatic control. The flanks 3a, 3b of the ratchet teeth 3 are parallel to radii passing through the centres of the respective teeth.
Patent GB-622573-A (GB)
Title: Improvements in and relating to control systems for electric motors
IPC: G05B11/01
Filed: 1947-03-28
Abstract: 622,573. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. March 28, 1947, No. 8491. Convention date, March 28, 1946. [Class 38(iii)] A reversible D.C. motor 1 is supplied from an A.C. source and is provided with split series field windings 1b and 1c which are respectively adapted for forward and reverse motor operation. These field windings are connected respectively in series with half-wave rectifying valves 2 and 3 which may be of the gas-filled type. The rectifying valves are grid-controlled by means of individual condensers 6 and 11 respectively. The charge on the condenser 6 is varied by means of control valves 7 and 8, which are connected reversely in parallel. The valve 8 is of the triode type and has a signal voltage applied to the grid thereof. The valve 7 is adapted for diode operation. The condenser 11 is similarly controlled by means of a triode valve 14 and a diode valve 13, the grid of the valve 14 being connected to a voltage divider 16. A signal voltage is developed across resistors 18 and 19 which, for example, are connected in series with a photo-electric cell 20. The signal voltage is amplified by a valve 25 so that, with an increase of the signal voltage above a predetermined value, the conductivity of the valve 25 is increased, that of the valve 8 is decreased with respect to the valve 7, and the resultant voltage across the condenser 6 becomes such that the valve 2 is rendered conductive for forward motor operation. The effect of a common resistor 10 in the cathode circuits of the valves 8 and 14 is to increase the conductivity of the latter when the current through the valve 8 is reduced. The resultant voltage on the condenser 11 is such that the valve 3 remains at cut-off. Increase or decrease of the signal voltage, within a certain limit, leads to increase or decrease of the motor speed in the forward direction, but, if the signal voltage falls below a pre-determined value, the conductivity of the valve 8 is so increased that the valve 2 is cut off, the conductivity of the valve 14 is decreased, and the valve 3 fires for motor operation in the reverse direction. Further decrease of the signal voltage leads to increased motor speed in the reverse direction.