baber/WOPTO huggingface dataset:
Patent GB-669595-A (GB)
Title: Improvements in or relating to electric protective arrangements
IPC: H02H3/30
Filed: 1949-06-24
Abstract: 669,595. Protective cut-out arrangements. REYROLLE & CO., Ltd., A., and EDGLEY, R. K. June 23, 1950. [June 24, 1949] No. 16827/49. Class 38 (v). In the Merz-Price current balance protective arrangement of Specification 667,687, the transductor is also provided with a "steadystate" bias winding to prevent undesired operation of the arrangement under "steady-state" throught-fault conditions. The or each transductor, Fig. 1, is provided with the "steadystate" bias winding L connected through a bridge-connected rectifier M to the secondary of a transformer M<SP>1</SP>, whose primary is in series with the pilot circuit C<SP>1</SP>, C<SP>2</SP> or C<SP>3</SP> and has a midpoint tapping to which one end of the equipotential connection is connected. The winding L is inductively linked with the smoothing winding G, but not with the A.C. operating and secondary windings H, H<SP>1</SP>, J, J<SP>1</SP>. Under heavy through-fault conditions, the large current circulating in the pilot circuit causes the bias winding L to saturate the core of the transductor to an extent sufficient to prevent any out-of-balance currents in the windings H, H<SP>1</SP> inducing sufficient current in the windings J, J<SP>1</SP> to energize the relay K. In addition to the modifications described in the above specification, the present arrangement may be modified by arranging the transient bias winding in two parts, the parts being connected in series in the pilot circuit one on either side of the equipotential connection, Fig. 6 (not shown). The two parts of the winding may be arranged to produce additive fluxes so that the bias depends on the D.C. component of the primary current surge, or to produce opposed fluxes in which case the bias depends on the D.C. component of the out-of-balance current. In a further modification, Fig. 5 (not shown) each transductor D<SP>1</SP> D<SP>2</SP> or D<SP>3</SP> is replaced by two transductors, the transient bias winding F and a smoothing winding being provided on one transductor core, whilst the "steady-state" bias winding L together with a further smoothing winding is arranged on the other transductor core, so that the biassing is effected in two separate transformer stages.
Patent GB-156283-A (GB)
Title: Improvements in or relating to chucks
IPC: B23B31/10
Filed: 1919-07-05
Abstract: 156,283. Vickers, Ltd., and Buckham, Sir G. T. July 5, 1919. Chucks.-In a chuck with independent screw adjustment, the screw c fits into a recess in the jaw b which is adapted to slide in an undercut groove in the face-plate a, a removable block d with a screwed portion, being employed to act as a nut for the adjusting-screw. The loose block is held in place by the dog embracing it and engaging with the inclined grooves in the faceplate.
Patent GB-940672-A (GB)
Title: Improvements in transistor circuits
Inventor: LAX LADISLAV
IPC: H03G1/00
Filed: 1960-05-13
Abstract: 940,672. Transistor amplifiers. PYE Ltd. April 28, 1961 [May 13, 1960], No. 16962/60. Heading H3T. [Also in Division G1] The gain of a transistor amplifier is controlled from a remote point by connecting a lightsensitive or heat-sensitive resistive element in parallel with the emitter resistor R1 and controlling the value of the resistive element by means of an electric lamp or heating element energized by a voltage which is variable at the remote point. Adjustment of potentiometer R3 at the remote point varies the intensity of the lamp LP and hence the resistance value of the photo-conductor PC, thus varying the negative feedback provided in the emitter circuit of the transistor and hence the gain of the amplifier.
Patent GB-697462-A (GB)
Title: Improvements in or relating to electric resistance welding processes
Inventor: ELLEMAN ALBERT JULIUS
IPC: B23K35/22
Filed: 1950-07-07
Abstract: 697,462. Welding by pressure. IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 4, 1951 [July 7, 1950], No. 17014/50. Class 83 (iv). Metal parts having a dry coating of a paint or lacquer containing a non-oxidized magnetic metal powder are joined by electric resistance welding. The proportion of metal powder which may be of soft iron, nickel, nickel-iron, &c., is less than 30 per cent by volume of the dry paint. The metal powder may possess magnetic remanence and a liquid paint containing nickel is subjected to a magnetic field when as little as 7.5 per cent nickel in the dry film is satisfactory. The powder should have a ratio of real density to apparent density greater than 4 : 1, the apparent density being a weight of centrifugal compacted powder divided by its apparent volume.
Patent GB-883124-A (GB)
Title: Improvements in or relating to inlet valves for reciprocating compressors
Inventor: VILLADSEN VAGN HOVGAARD
IPC: F04B39/10
Filed: 1960-05-13
Abstract: 883,124. Reciprocating compressors. SABROC & CO. A. S. THOMAS THS. May 13, 1960, No. 17079/60. Class 8(1). A compressor inlet valve comprises two annular plates 15, 16 spaced axially apart within the cylinder wall 12 in planes normal to the cylinder axis and separated by an axially slidable ring 21 which forms abutments for valve springs 19, 20. The ring 21 is normally held midway between the valve plates by a ball catch 22, 23, 24 but during an unloading period is displaced towards plate 16 by a rod 28 subjected to delivery pressure by means not shown and serving to displace valve plate 15 from its seat 17 and hence to displace ring 21. The delivery valve comprises an annular spring- biased plate 13.
Patent GB-912519-A (GB)
Title: Improved crayon
IPC: B43K21/00
Filed: 1961-05-10
Abstract: 912,519. Pencil &c. holders. MOOJEN, L. G. May 10, 1961, No. 17079/61. Class 146 (3). A stick of transferable material such as a crayon 14 is slidably encased in an outer sheath 13 of cardboard or the like, and at the end remote from the writing end has a stop means comprising a metal strip, as shown in Fig. 1, partly set into the material. The stop means has first lateral projections 11 intermediate of its length which bear against the internal wall of the sheath 13, and second lateral projections 12 arranged to contact the inner wall of the sheath and prevent the material 14 from sliding backwards in the sheath by digging into the material of the sheath when pressure is applied to the writing and. In producing the crayon, the stop member is first placed into the top end of the sheath opposite to the writing end so that the second lateral projections 12 lie horizontally across the top end. In this position the stop member is held under compression by the first lateral projection 11 against the internal wall of the sheath. The molten transferable material 14 is poured into the sheath 13 and on setting retains the stop means except for the second lateral projections 12. By pushing the material 14 along the sheath 13 to the writing position, the stop member takes the form shown in Fig. 4. Specification 905,472 is referred to.
Patent GB-1511904-A (GB)
Title: Filter assemblies and cartridges therefor
IPC: F02M35/024
Filed: 1975-04-24
Abstract: 1511904 Filter cartridges and filter units TECAFILTRES 24 April 1975 [24 April 1974] 17125/75 Headings B1D and BIT A generally annular filter element is attached to two pre-formed end plates by heating the plates to softening point and pressing them on to the ends of the element between two platens to embed the element therein. The element may be resin-impregnated pleated paper, pleated cotton fabric supported between sleeves of perforated or woven metal or plastics, or polyurethane foam. The end plates are polypropylene, polyethylene, or polyacetal or methacrylate resins. They may be simple discs cut from a flat sheet or more complex moulded shapes including sealing rings to engage parts of an enclosing housing or forming a cover for the housing (Fig. 7 not shown) or the two halves of the housing itself (Fig. 8) to make a complete disposable filter unit. In Fig. 2 (not shown) the pressing platens engage the whole areas of the end plates and are heated by internal electric elements or tubes carrying hot fluid. In Fig. 3 (not shown) the platens expose annular areas of the end plates for heating by hot air jets. In Fig. 4 the end plates 26, 27 are similarly exposed for heating by infra-red radiators 30, 31, while the tubular filter element 23 (of foamed polyurethane) is supported temporarily by means 24, 25. Sealing rings may be formed as integral parts of end plates (Fig. 5 not shown) or as separate rings of neoprene or polyurethane which may be embedded in the end plates in the same operation as embedding the filter element (Fig. 6 not shown). The cartridges or units may be used as I.C. engine air intake filters or to filter oil or water. Claims are limited to the constructions wherein the end plates form part of the housing.
Patent GB-315021-A (GB)
Title: Tone arms or like sound conducting tubes for gramophones and the like
IPC: G11B3/00
Filed: 1928-02-06
Abstract: 315,021. Columbia Graphophone Co., Ltd., and Mitchell, F. A. Feb. 6, 1928. Divided on 313,420. Tone-arms.-A tone-arm comprises two or more sound conduits F, T, flexibly connected together and having two or more relatively rigid reflecting surfaces D, D<1>, and D<2>, D<3> adapted to maintain the wave front of the sound vibrations in each conduit in a plane at rightangles to the axis x of such conduit. In the form shown in Fig. 1, the sound-box is connected to a portion F of the tone-arm which is flexibly jointed at F<2> to the main portion T of the arm, so that the sound-box can be lifted about this joint for changing the needle. The joint is so arranged that in all playing positions the axis or propogation of the sound wave is unchanged. The tone-arm may be connected to horns H of the kinds described in Specifications 271,571, [Class 13, Bells &c.], 284,779, and 306,166, through the medium of the pedestal shown in Fig. 5. The tone-arm swivels on ball bearings B in the pedestal P, and an oiled sleeve A prevents leakage of air. The reflectors may be constructed of hard or soft material or with a bright or rough surface so as to act as resonators or dampers of sound.
Patent GB-236051-A (GB)
Title: Improvements in or relating to attachments for sewing machines
IPC: D05B3/24
Filed: 1924-07-17
Abstract: 236,051. Sibbald, C. J., Sibbald, C. T. A., and Sibbald, J. O. July 17, 1924. Operating belt forks.-Stopping gear actuated by a cam 42 comprises a belt lever 74 which is ,acted on by a spring so as to tend to move the belt 73 on a loose pulley. This is normally prevented by a catch 75 engaged by a latch 77. A lug 81 on the latch is engaged by a, lug 83 on the cam to trip the latch. The cam is employed in a machine for stitching trade Lames and when names of more than one word are to be stitched a second stop lug 83<1> is provided the cam being' moved by hand and the machine restrained after the first stoppage.
Patent GB-862472-A (GB)
Title: Improvements relating to railway vehicle vacuum braking apparatus
Inventor: MOORE IVAN GEOFFREY
IPC: B60T13/46
Filed: 1958-05-30
Abstract: 862,472. Fluid-pressure servomotors. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. May 29, 1959 [May 30, 1958], No. 17300/58. Class 135. [Also in Group XXXIV] In an " empty-load " vacuum braking apparatus for railway vehicles, (Group XXXIV), provision is made for automatic changing of empty to load braking and vice versa by means of a servomotor contained in casing 23 which operates a slide valve 19 between open and closed positions in response to the supply of vacuum over one of two supplying paths accord - ing to whether the load is above or below a predetermined value. When the vehicle load is less than a predetermined value, the train pipe 11 is connected through direct application valve 12 with the " empty " brake cylinder 13 and with a change-over valve 14 of the control mechanism leading to the load brake cylinder ; the latter valve 14 being in the inoperative position illustrated. Increase in load causes check valve 35 of empty load valve 32 to be unseated and thereby expose the diaphragm 30 to train pipe vacuum. However, it is not until the next stage when the check valve member 36 is unseated that the vacuum to which the diaphragm 30 is exposed is able to assert itself, because only then is the vacuum prevailing at the diaphragm 31 released by exposure of that diaphragm to atmospheric pressure through open check valve member 36. The depression of the plungers 33 and 34 becomes sufficient to accomplish this last stage when the vehicle load exceeds a predetermined value and the servomotor 23 is displaced with a snap action due to the spring toggle device 24 to 29 inclusive, to the upper limit position and accordingly the slide valve 19 is operated to the position corresponding to the open position of the change-over valve in which the check valve member 20 is unseated. Flow is thereby permitted in the direction towards the lower chamber of the " load " brake cylinder 17 which therefore becomes operable.
Patent GB-1454476-A (GB)
Title: Fade resistant ink
IPC: C09D11/00
Filed: 1975-04-25
Abstract: 1454476 Fade-resistant ink FIBREBOARD CORP 25 April 1975 [29 April 1974] 17351/75 Heading C4A A fade-resistant ink comprises at least one basic dye of the triarylmethane or diarylmethane series, at least one metal complex of an azo dye and a suitable solvent. Suitable solvents are glycols, water, alcohols and glycol ethers. In the examples the inks comprise Basic Violet 1, a cobalt complex of an azo dye, tetraethylene glycol, butoxytriglycol, water, ethyl alcohol, Basic Red 1, Basic Yellow 2, Solvent Red 130, Basic Green 4, Solvent Blue 42 and Solvent Yellow 88.
Patent GB-857935-A (GB)
Title: Improvements in or relating to inorganic ceramic binders
IPC: C04B41/88
Filed: 1959-05-21
Abstract: 857,935. Enamels. DU PONT DE NEMOURS & CO., E. I. May 21, 1959 [May 23, 1958], No. 17364/59. Class 56. A silver composition comprises finely divided metallic silver or a compound yielding metallic silver under firing conditions and finely divided particles of a vitrifiable inorganic ceramic binder comprising 65-85% Pbo, 12-20% B 2 O 3 , 0-5% SiOz and 0À5-10% A1 2 O 3 , the total content of SiO 3  (if any) and B 2 O 3  being between 13% and 25% by weight of the binder and the proportion of silver to binder being between 10 : 1 and 18:1. The binder is preferably dispersed in a liquid vehicle for application to a surface on which it is to be fired. The stated binder constituents preferably constitute at least 85% thereof. Alkali metal oxides and bismuth trioxide are preferably absent. The binder ingredients are melted, poured into water, ball milled and dried. If wanted finer, the frit is sintered and ball milled again. The composition is used in the production of piezo electric devices by firing a silver layer on a body of lead zirconate, lead titanate zirconate, lead metaniobate or barium titanate zirconate. Specifications 803,943, 803,944, and U.S.A. Specifications 2,385,580, 2,607,701, 2,607,702 and 2,892,734 are referred to.
Patent GB-1119614-A (GB)
Title: Improvements in or relating to commutating electrical machine brush assemblies
IPC: H01R39/26
Filed: 1966-04-20
Abstract: 1,119,614. Brushes for dynamo-electric machines. SOC. LE CARBONE-LORRAINE. 20 April, 1966 [23 April, 1965], No. 17369/66. Heading H2A. To prevent corrosion by a coiled metal strip pressure spring 5, a metallic plate 3 fixed to the upper part of one brush 1 of a twin brush assembly for a commutating electrical machine and which bears on the pressure-conveying surfaces of both brushes 1, 2 is provided on its surface which receives the pressure with an insulating relatively low coefficient of friction coating 4. Such coating may be P.T.F.E., nylon, or an epoxy resin obtained by deposition or fixing a plate thereof.
Patent GB-606565-A (GB)
Title: Improvements in pigment and method of pigment manufacture
IPC: B02C19/00
Filed: 1945-07-09
Abstract: Pigments from aluminium dross suitable for admixture with linseed oil or varnish to form a paint are obtained by subjecting the dross to the action of a disintegrating mill in the presence of a viscous liquid until the dross is reduced to the desired degree of fineness and then adjusting the liquid content or completely removing the liquid to leave a dry powdered pigment. The viscous liquid may be water with a thickening agent such as water-soluble gums or bentonite clay or the viscous liquid may be mineral spirits or coal tar solvents mixed with a surface-active compound such as aluminium naphthenate.  The dross consists of aluminium oxide admixed with unrecoverable aluminium and aluminium alloyed with the metals copper, zinc, magnesium, arsenic or silicon.  The metal content of the pigments may be adjusted by removing during grinding a predetermined proportion of aluminium oxide.  The pigments may be mixed with rust inhibitors such as blue lead or zinc chromate or tinting pigments such as chrome yellow.  After application to a surface, the pigment may be rubbed or buffed to give a lustrous metallic effect.ALSO:Aluminium dross is ground in the presence of a viscous liquid in a disintegrating mill to render it suitable for use as a pigment.  The viscous liquid may be water with a thickening agent such as water soluble gums or bentonite clay or the viscous liquid may be mineral spirits or coal tar solvents mixed with a surface active compound such as aluminium naphthonate.  The dross consists of aluminium oxide admixed with unrecoverable aluminium and aluminium alloyed with the metals copper, zinc, magnesium, arsenic or silicon.
Patent GB-677037-A (GB)
Title: Improvements in and relating to electric radiant fan heaters
IPC: F24H3/04
Filed: 1950-07-12
Abstract: 677,037. Screw fans. BRITISH THOMSON-HOUSTON CO., Ltd. July 12, 1950 [July 26, 1949], No. 17470/50. Class 110(i) [Also in Group XI] An electric air heater comprises a cylindrical casing 4 adjustably mounted on a base 1, an electric motor 18 mounted in the casing 4 with its shaft 9 coaxially arranged therewith, a combined reflector and fan member 12 on the shaft and having a central, polished, heat-reflecting part 15 with peripheral blades 16, an electric heating element 7, 8 arranged opposite the member 12 at the side remote from the motor 18, and a guard 5 on the casing 4 supporting the heating element 7, 8. The member 12, which is of aluminium or copper coated with lacquer, has a central hub-forming part 14, the intermediate, parabolic part 15, and a narrow, peripheral portion cut and bent to form the blades 16. A rear guard 6 is provided, air passing from the rear 6 to the front 5 of the casing 4.
Patent GB-1498138-A (GB)
Title: Pivot joint for an apparatus cover hood
IPC: E05D11/08
Filed: 1975-04-28
Abstract: 1498138 Pivot joints DUAL GEBR STEIDINGER KG & CO GmbH 28 April 1975 [13 May 1974] 17473/75 Heading E2F In a pivot joint for connecting a cover 8 to a housing 2, helical compression springs 13, 14 are provided to produce a torque to counteract the torque produced by the weight of the cover 8 and axially displaceable sleeves 9, 10 are mounted concentrically on the joint axle 3 such that cam surfaces 17, 18 on the sleeves 9, 10 engage against respective cam surfaces 19, 20 provided on a member 5 which is mounted on the joint axle 3 and which is provided with a slot-like recess 6 into which the rear wall of the cover 8 is inserted. The dimensions of the compression springs 13, 14 are such that, over a substantial predetermined region of the opening angle of the cover, a torque is produced which corresponds to the weight of the cover in any position but which acts in opposition thereto. Adjustment of the compression springs is provided by a knurled nut 21.
Patent GB-825397-A (GB)
Title: Organo-mercapto-methylenamides of o, o-dialkyl-thio-(or dithio)-phosphorylacetic acids and their preparation
IPC: C07F9/165
Filed: 1958-06-02
Abstract: The invention comprises organo-mercapto-methylene amides of O,O-dialkyl-thio- (or dithio-) - phosphoryl acetic acids having the general formula <FORM:0825397/IV (b)/1> in which R is a normal or branched alkyl or alkenyl radical, or a cycloaliphatic, aryl, or substituted aryl radical, R1 is C1-C4 alkyl and X is oxygen or sulphur.  They may be obtained by reacting a mercaptan (RSH) with a N-methylol-amide of an O,O-dialkyl-thio-(or dithio-) phosphoryl acetic acid of the formula HO.CH2NHCOCH2SP(X)(OR1)2 in which R, R1 and X are as defined above in the presence of an acid condensation agent, e.g. HCl, H2SO4, ZnCl2 or CaCl2, and a solvent for at least one of the reactants or a dispersing agent and at a temperature of from 0 DEG  to 150 DEG  C. or by reacting an organo - mercapto - methylene - (2-halogeno)-acetamide of the formula R-S-CH2-NH-CO-CH2Y in which R is as defined above and Y is halogen, e.g. chlorine, with a compound of the formula MS.P(X)(OR1)2, in which R1 is as defined above and M is Na, K, or alkaline earth metal such as calcium or barium, or an ammonium radical, in the presence of a solvent for at least one of the reactants or a dispersing agent and at a temperature of from 0 DEG  to 150 DEG  C. SSpecified R radicals are methyl, ethyl, isopropyl and phenyl and specified R1 radicals are methyl and ethyl. The products have insecticidal properties (see Group VI).ALSO:Organo-mercapto-methyleneamides of O,O-dialkyl-thio- (or dithio) phosphoryl acetic acids of the general formula R.S.CH2.NH.CO.CH2S.P(X)(OR1)2 in which R is a normal or branched alkyl or alkenyl radical or a cycloaliphatic, aryl, or substituted aryl radical (see Group IV (b)) have insecticidal properties and may be used in admixture with known insecticides.  Specified compositions are aqueous dispersions of the products and solutions of the products in acetone or in dimethyl acetamide.
Patent GB-1422069-A (GB)
Title: Apparatus for filling containers
IPC: B65B39/14
Filed: 1974-04-23
Abstract: 1422069 Filling containers OHLER EISENWERK THEOB PFEIFFER 23 April 1974 [30 Aug 1973] 17617/74 Heading B8C Apparatus for filling containers 1 moving on a conveyer 2 comprises a hopper, plate or other material receiving device 6 located at a fixed position, a pivotally mounted guide channel 4 having an inlet end beneath the hopper and an outlet end joined to a filling pipe 9 movable at the same speed as a container, a conveyer in the guide channel to move material from the inlet to the outlet, and delivering device in the hopper to deliver material to the conveyer in dependence on the container conveyance. The delivering device may comprise a pivoted base-plate in the hopper and is pivoted when a photo-cell 8 detects a container. Two filling apparatuses may be arranged side by side, with a lever 13 interconnecting the filling pipes and connected by a pin and slot arrangement 14, 14a to a slide 12 driven by the conveyer 2. There may be three filling apparatuses.
Patent GB-508623-A (GB)
Title: Improvements in and relating to springing arrangement for vehicles
IPC: B60G11/38
Filed: 1938-06-14
Abstract: 508,623. Vehicle spring-suspensions. PORSGHE, F. June 14, 1938, No. 17624. Convention date, July 10, 1937. [Classes 108 (ii) and 108 (iii)] In vehicle spring-suspensions comprising a main leaf spring and a rubber spring acting additionally thereon, the rubber spring is divided, transversely of the direction in which force is applied, by a rigid intermediate member. The rubber spring may act directly or indirectly on the leaf spring and may be stressed in compression or shear or a combination thereof. As shown, the rubber spring consists of parts 5, 5<1> separated by a member 12, 13, 14, the part 5<1> being secured to the walls of a supporting member 9 bolted to the frame, and the part 5 by means of a member 6, plates 7, 7<1> and bolts 8, 8<1> to the leaf spring 1. A space is left between the part 5<1> and the top of the member 9 so that the part 5<1> is stressed in shear over the lower part of the springing range and in compression when the space is filled with deformed rubber. The part 5 is provided with slots 15 to permit it to be deformed laterally. The dimensions. of the rubber spring may be chosen so that the suspension has a constant period of oscillation when subjected to shock stresses.