baber/WOPTO huggingface dataset:
Patent GB-757685-A (GB)
Title: Method of and apparatus for sawing plastic masses
Inventor: BERGLING CHARLES GUNNAR BIRGER
IPC: B28B17/00
Filed: 1954-11-17
Abstract: 757,685. Stone saws. DUROX INTERNATIONAL SOC. ANON. Nov. 17. 1954, No. 33297/54. Classes 124 and 145 [Also in Group V] In sawing plastic masses such as partly set concrete, a. sawing wire is used comprising a wire core around which are spirally wound other wires so that in at least two sections the threads of the spirals are in opposite senses. The sawing wire is mounted in a frame. As shown, the sawing wire consists of a steel core wire 1 (Fig. 2) having an outer wire 4 wound :around it in such a manner that parts 6 with a right hand pitch alternate with parts 7 having a left hand pitch, a loop or knot 5 being made where the pitches change. Sleeves 2 grip sockets 3 on the ends of wire 1 and are fastened to a frame 10, the collet at one end being suspended by a helical spring 11 to prevent damage to the saw if it meets an obstruction during sawing. In operation (Fig. 1) the light weight concrete slab 12 is poured in a mould 13 and the end walls 14, 15 lowered when it has partly set. A support 8 then pushes the block 12 through the reciprocating saw.
Patent GB-1340628-A (GB)
Title: Continuous sphering apparatus
IPC: B01J2/14
Filed: 1972-07-17
Abstract: 1340628 Apparatus for forming granular spheres FMC CORP 17 July 1972 [24 Aug 1971] 33329/72 Heading B5A Apparatus for continuously forming moistened granules or pellets into spheres comprises at least two stationary concentric cylinders 29, 35 arranged vertically with a rapidly rotatable disc 23 at the bottom end coaxial with the cylinders. The disc has a roughened annular area 39 on its upper surface adjacent to the internal surface of the innermost cylinder; each cylinder has at least one opening 43, 49, substantially larger than the spheres to be formed, located above the top surface of the disc and there is a collecting device 51. The disc has a central stepped portion projecting into the inner cylinder with minimal lateral clearance to avoid trapping material therein. In the embodiment of Fig. 2 (not shown) several cylinders are provided, the disc being stepped and having its upper surface roughened between each concentric pair of cylinders, and the collecting device comprising an annular trough extending around the base of the outer cylinder.
Patent GB-881021-A (GB)
Title: Improvements in controlling circuits
IPC: G05D23/24
Filed: 1956-11-01
Abstract: 881,021. Automatic temperature control systems. STEGHART, F. L. F. Oct. 25, 1957 [Nov. 1, 1956; Dec. 28, 1956], Nos. 33350/56 and 39377/56. Class 38 (4). A controlling circuit (e.g. for automatic temperature control) of the type deriving an output signal which is a continuous function of the error input and its time integral includes a magnetic coupling device between input and output serving as an electrical isolating link to prevent leakage currents damaging the transducer. Fig. 2 shows such a circuit in which the device is a magnetic amplifier with control winding 44 energized with D.C. according to the unbalance of a bridge 1 containing a temperature-variable resistor, and main windings 40a-43a the currents through which are rectified to provide an error signal across resistors 6 and 30. The signal applied to the grid of valve 12 is an " error " component taken from across 30 plus the potential difference across a capacitor 9 which charges through 7 and 8 from the voltage developed across 6; this charging rate is maintained approximately constant for constant error by a potentiometer 14a (see below). Thus the desired integral component is introduced. A time differential component is introduced by the C.R. circuit 10, 11 and the valve 12 amplifies the net signal to control a second magnetic amplifier 21 in its anode circuit. This feeds an electromagnetic motor coupled to an oil-jet and piston servomotor 22 which adjusts the position of controlling means 24 and the slider of potentiometer 14 referred to above. Figs. 3 and 4 (not shown) illustrate modifications in which the feedback to the charging circuit of integrating capacitor 9 is via a transformer in the H.T. supply circuit for valve 12, and a magnetic amplifier controlled by the anode current of valve 12 respectively; in the former a further transformer in the H.T. supply circuit isolates the output from the rest of the controller. Specifications 826,341 and 871,562 are referred to.
Patent GB-323862-A (GB)
Title: Improvements in or relating to means for nullifying voltage fluctuations in electrical circuits
IPC: G05F3/06
Filed: 1928-11-15
Abstract: 323,862,. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Nov. 15, 1928. Converting pulsating currents into steady continuous currents.-In means for supplying a load circuit such as a thermionic valve installation from a source of pulsating current such as electric supply mains 1, 2, a second pulsating or alternating current opposite in phase to the alternating component of the supply current is combined with the latter, the second current being obtained by means of a transformer T the secondary S of which is in series with the supply whilst the primary P is connected through a saturated core choking coil L across the supply source. Preferably, a condenser C is also connected in series with the primary winding 'and choking coil.
Patent GB-1027025-A (GB)
Title: Benzothiadiazine derivatives
IPC: C07D285/30
Filed: 1963-08-23
Abstract: The invention comprises (a) compounds of the formula <FORM:1027025/C2/1> wherein R1 and R2 represent hydrogen or halogen atoms or together represent a carbon-carbon bond, R3 is a hydrogen atom or a C1- 3 alkyl group, R4 is a halogen atom or a trifluoromethyl or C1- 3 alkyl group, R5 is a hydrogen or halogen atom or a trifluoromethyl or C1- 3 alkyl group, R8 is a hydrogen atom or a C1- 3 alkyl group and n is 1 or 2; (b) the process for their preparation by reacting a 2-R5-3-R4-4-chloro-sulphonyl-2-sulphamoyl-aniline with the appropriate bicyclic aldehyde or a functional derivative thereof such as the acetal, cyanohydrin, sodium bisulphite addition product or dihalogen derivative and (c) a process for preparing compounds of the formula <FORM:1027025/C2/2> wherein R6 and R7 are hydrogen atoms or C1- 3 alkyl groups or together with the nitrogen atom form a heterocyclic ring by reacting a product as defined in (a) above with an amine R6R7NH, preferably in the presence of an acid-binding agent. If desired, the reaction mixture from process (b) may be reacted directly with the amine R6R7NH without isolating the intermediate sulphonyl chloride (a).  4-Chlorosulphonyl-2-sulphamoyl-anilines bearing substituents R4 and R5 in the 3- and 2-positions are made by reacting the corresponding amine R8NH2.
Patent GB-958631-A (GB)
Title: Carbamic acid esters
IPC: C07D307/68
Filed: 1962-08-31
Abstract: The invention comprises compounds of the general formula: <FORM:0958631/C2/1> wherein R and R1 represent unsubstituted or substituted aliphatic, araliphatic or aromatic radicals and R2 represents a hydrogen atom or an alkyl radical.  Specified substituents of R and R1 are halogen atoms and alkoxy, alkyl and nitro groups.  The compounds may be prepared by reacting the corresponding aliphatic, araliphatic or aromatic hydroxamic acid chlorides with appropriate isocyanates or carbamic acid chlorides in the presence of pyridine or of a tertiary amine.  The hydroxamic acid chlorides used as starting materials can be obtained from the corresponding aldehydes and hydroxylamine with subsequent chlorination of the hydroxamic acids formed.  Examples are given.ALSO:The invention comprises fungicidal compositions containing a compound of the formula <FORM:0958631/A5-A6/1> wherein R and R1 represent unsubstituted or substituted, e.g. by halogen, alkoxy or nitro aliphatic, araliphatic or aromatic radicals and R2 represents a hydrogen atom or an alkyl radical (see Division C2), and a solid or liquid diluent or carrier.  The compounds may be used in the presence of suitable solvents and emulsifiers in the form of aqueous emulsions or may be mixed with suitable auxiliary suspending agents and inert carriers such as kaolin or bentonite and employed as aqueous suspensions.  The preparations may also be used in the form of dusting agents after mixing and optionally grinding with suitable solid carrier materials.  The compounds may also be used in combination with known fungicides and/or insecticides.
Patent GB-887595-A (GB)
Title: Oxazolidone derivatives
Inventor: INGLEBY RICHARD FREDERICK JAME
IPC: C07D263/20
Filed: 1959-10-02
Abstract: Compounds of formula <FORM:0887595/IV (b)/1> wherein R1 is the residue of an aldehyde R1CHO and R2, R3, R4 and R5, which may be the same or different, are hydrogen, alkyl, aryl or aralkyl, are prepared by reacting an oxazolidone of formula <FORM:0887595/IV (b)/2> with an aldehyde of formula R1CHO, if necessary in the presence of an acid catalyst.  The condensation products are claimed per se except for that in which all the R groups are hydrogen.  Suitable acid catalysts include organic and inorganic acids, sulphonic ion-exchange resins, acid salts and Lewis acids. The aldehyde is generally in excess.  The products are stated to be solvents and plasticisers for polymers.  In examples, condensation products are prepared from 2-oxazolidone and formaldehyde, acetaldehyde (these may be used in the form of their polymers), benzaldehyde, chloral hydrate, propionaldehyde, n-heptaldehyde, cinnamaldehyde, crotonaldehyde, acrolein, furfural and glyoxal and from 5-methyl-2-oxazolidone and paraldehyde.
Patent GB-1456762-A (GB)
Title: Flexible annular core used for the production of hollow toroidal rubber shells
IPC: B29C33/76
Filed: 1974-07-31
Abstract: 1456762 Moulding hollow toroidal rubber shells BRIDGESTONE TIRE KK 31 July 1974 [7 Aug 1973] 33684/74 Heading B5A An annular core for moulding, e.g. tyres, comprises bead portions 5, a reinforcing layer 6 and an elastomeric covering 7, with the layer 6 formed of at least one ply reinforced with cord and being adhesively joined to the elastomeric layers in the region of the bead portions 5 but not adhered to the elastomeric layers in the region between the beads. In operation, the core is fixed to rings 3 and is inflated within a mould 9 to define a cavity 8. When a tyre has been moulded the rings are moved apart to deform the core to a cylindrical state and allow the moulded tyre to be removed.
Patent GB-918004-A (GB)
Title: Improvements in electrical insulation testers
Inventor: AXWORTHY FRANCIS ROY
IPC: G01R27/02
Filed: 1961-09-20
Abstract: 918,004. Resistance measurement. EVERETT, EDGCUMBE & CO. Ltd. Sept. 20, 1961, No. 33707/61. Addition to 874,672. Class 37. In the insulation tester claimed and described in the parent Specification the resistance calibrated current-measuring instrument is replaced by a ratiometer whose voltage coil is energized proportionally to the output voltage of the oscillatory voltage converter, and whose current coil is energized by the output current of the converter when connected across the insulation to be tested. The voltage coil may be energized from an intermediate tap of the secondary of the converter transformer over a half-wave rectifier, smoothing capacitance, and series resistance (Fig. 1, not shown). For initial adjustment of the converter voltage ganged switches S 1 , S 2  (Fig. 2) in position b apply a known voltage coil Cv from a further intermediate tapping of the secondary through rectifier D 3 , resistance R 2  and stabilizing Zener diode D z  while connecting a known resistance R 4  to the output terminals, to read which the calibrated meter may be adjusted, while in position a the voltage coil is directly energized over rectifier D 2 .
Patent GB-1394916-A (GB)
Title: Manufacture of metal frames for tennis and other rackets
IPC: A63B49/12
Filed: 1973-07-16
Abstract: 1394916 Rackets J SANTINI-ORMIERES R SPENLE and M CHERVIN 16 July 1973 [2 Aug 1972] 33740/73 Heading A6D A metal frame for a tennis or other racket includes two tubular metal elements of the required shape, at least one of which has, on one surface, depressions 3, which, when the elements are assembled one on top of the other, define spaces 5 for the passage and fixing of the interwoven strings (not shown). Preferably both elements are formed with matching depressions as shown in Fig 4. The frame is made by bending two metal tubes to the shape shown in Fig 1, stamping both tubular elements to form the depressions 3, and welding or brazing the elements together at 4. The depressions 3 may form holes 5 for single strings as shown in Fig 4, or may be elongated to form holes 5' for two or more strings, the strings then being positioned by perforations 6a in a strut or small plate 6 of synthetic material fixed to the outside edge of the frame as shown in Figure 8.
Patent GB-1472042-A (GB)
Title: Tractor vehicle with an engine exhaust system
IPC: F01N13/08
Filed: 1975-08-13
Abstract: 1472042 Vehicle exhaust systems CATERPILLAR TRACTOR CO 13 Aug 1975 [21 Nov 1974] 33759/75 Heading B7H [Also in Division F1] A tractor vehicle 12 for drawing a trailer 14 comprises a turn-stop assembly 24 (i.e. an assembly including bumper or stop means 62, 64 to prevent the trailer 14 from swinging around excessively about a vertical pivot 16 and striking the vehicle cab 32) mounted on the vehicle rearwardly of its cab 32 wherein an exhaust system is incorporated in the turn-stop assembly 24 which includes a closed chamber 51 having an inlet opening 68 and an exhaust stack 86 means 88 to deliver exhaust gases from the vehicle engine 20 to the inlet opening 68 baffle means 72 and 74 in the chamber 51 on opposite sides of the opening 68, and means 76 for blocking the shortest path of the exhaust gases from the opening 68 to the stack 86. Baffle plates 72, 74 have apertures 78 for passage of part of the exhaust gases, and the chamber 51 has drainage holes 80 near its bottom for discharge of condensate from the gases.
Patent GB-922620-A (GB)
Title: Polymer process
IPC: C08F10/00
Filed: 1960-10-03
Abstract: In a continuous process for the polymerization of ethylene and/or propylene or the copolymerization thereof with one or more copolymerizable ethylenically or acetylenically unsaturated monomers the polymerization is conducted in the presence of a combination catalyst system comprising a metal halide or oxyhalide catalyst of a multivalent metal and a cocatalyst reducing agent, the ratio of cocatalyst to catalyst being maintained between 0,5 and 25% by weight, in the presence of an inert solvent-diluent, at a pressure of 2,000 to 6,000 p.s.i.g. in a stirred reactor.  Preferably the catalyst is thereafter deactivated and agglomerated with a mixture of water or solvent and an oxidizing agent, e.g. t-butyl hydroperoxide and hydrogen peroxide, the solid deactivated catalyst particles are separated from the fluid reaction mixture, the pressure is released to substantially atmospheric and the polymer or copolymer is separated from unreacted olefin and solvent-diluent.  The cocatalyst may be a metal alkyl, metal aryl, metal hydride, p  Grignard reagent, alkali metal or alkaline earth metal.  Many examples of suitable catalysts, cocatalysts and catalyst systems are listed.  The solvent-diluent may be benzene, toluene, xylenes, ethylbenzene, cyclohexane, methyl cyclopentane, cyclopentane, petroleum fractions, pentanes, hexanes or heptanes.  Modifiers such as hydrogen, tetrachlorethylene, water, oxygen, ethers, aldehydes and ketones may be present.  Many suitable comonomers are listed.  Examples describe the polymerization in cyclohexane of (1 to 4) ethylene and (6) a mixture of ethylene and propylene in the presence of a catalyst system comprising titanium tetrachloride and triethyl aluminium, and of (5) propylene and (6) a mixture of ethylene and butene-1 in the presence of a catalyst system comprising titanium tetrachloride, vanadium oxytrichloride, silicon tetrachloride and triethyl aluminium. Apparatus suitable for carrying out the process of the invention is described and illustrated.  The products may be liquids, greases, waxes or solids, e.g. linear polyethylene and isotactic polypropylene.
Patent GB-1122755-A (GB)
Title: A high frequency oscillator
Inventor: ERLER HEINZ
IPC: H03B5/18
Filed: 1967-07-25
Abstract: 1,122,755. Oscillators. FERNSEHGERATEWERK STASSFURT VEB. 25 July, 1967, No. 34037/67. Heading H3T. [Also in Division H1] A high-frequency oscillator tuned by a varicap diode comprises a conductively coated insulating plate supporting all the components and having the inductive part of the frequencydetermining components as strips formed by removing part of the conductive coating. In Fig. 1 a common-base transistor has a feed-back loop 4 inductively coupled to an inductive strip 7. The latter is tuned by a varicap diode 6 and capacitor 5 to a frequency above the oscillator frequency while the loop 4 is tuned by a capacitor 3 to a frequency slightly less than the minimum oscillator frequency. The components 4 and 7 are formed as conductive strips on opposite sides of the insulating plate (Figs. 2-5, not shown). The frequency range can be adjusted by (a) varying the width of the strips, (b) altering the distance between the strips and the surrounding conductive coating, or (c) using a piece 13 which shorts the strips on the two sides of the plate.
Patent GB-169644-A (GB)
Title: Novel or improved closure for receptacles
IPC: A47J27/08
Filed: 1920-12-02
Abstract: 169,644. Jones, B. Highfield-, Jones, P. Highfield-, and Dodd, C. E. Dec. 2, 1920. Stoppers and lids, catch and like; stoppers, packing-rings for. - In lids of sheet-metal sanitary buckets &c. secured by toggle means, packing is interposed in an inverted channel on the lid. The upper edge of the receptacle A is turned over to form beadings a, a'. The lid is formed with an inverled channel b to contain packing F, the outer side being carried downwards as shown at b<1>. A hook member C is adapted to engage the beading a' and is pivoted at the upper end between jaws d on a toggle-lever D pivoted between brackets E riveted to the cover. The lever D is extended to form a handle G, which is provided with a face g<1> at an angle corresponding with that of the lower portion of the receptacle, to facilitate nesting. The packing F may be solid, or may be in the form of a tube f having inserted therein an endless wire ring f<1> keeping the tube extended into a recess b<2>. In a modification, the lower bead a<1> is dispensed with and the hook C engages a single bead at the edge of the receptacle, and in another form brackets may be disposed near the top of the receptacle to replace the bead.
Patent GB-902283-A (GB)
Title: Improvements in or relating to compensating arrangements for wattmeters
IPC: G01R21/00
Filed: 1958-10-24
Abstract: 902,283. Wattmeters. SANGAMO WESTON Ltd. Oct. 24, 1958 [Nov. 4, 1957], No. 34133/58. Class 37. An arrangement for correcting the indication of a wattmeter for the power consumed by its potential circuit comprises a thermocouple having its input connected to the potential circuit of the wattmeter, means converting the thermocouple output to a proportional torque, and means for applying such torque in opposition to that developed by the movable element of the wattmeter. Fig. 1 shows the arrangement applied to an electrodynamometer wattmeter comprising fixed field coils 14 coupled to the supply 11 by a current transformer 18, and a movable potential coil 16 connected in series with potential dropping resistor 22 and thermocouple heater 27 across load 10. The output of thermocouple 23 is applied through potentiometer 26 to a direct current amplifier 24 whose output terminals 32 are connected to coil 33 of a D.C. instrument 34. Coil 33 is fixed to the staff 17 carrying the wattmeter potential coil 16, the torques produced by each coil being in opposition. The correct opposing torque of coil 33 is obtained by opening load 10 and adjusting potentiometer 26 for zero deflection of pointer 37. The arrangement may also correct for the power consumed by an additional instrument, e.g. a voltmeter connected across the load 10. In Figs. 2, 3 (not shown), the correcting arrangement is applied to the product resolver described in Specification 754,130 which is connected as a wattmeter.
Patent GB-622734-A (GB)
Title: Improvements relating to the bearing supports of rotary drums
IPC: B24B31/02
Filed: 1945-12-17
Abstract: 622,734. Support bearings for rotary drums. SMIDTH & CO. AKTIESELSKABET, F. L. Dec. 17, 1945, No. 34147. Convention date, April 11, 1942. [Class 59] [Also in Group XXXIV] A horizontal or inclined grinding drum rotatably supported by cylindrical surfaces thereon slidingly engaging shoes which may be fixed or self - adjusting is axially located by a transverse surface thereon slidingly engaging an axially fixed surface. As shown in Fig. 1, a rotary drum 1 is provided with a number of rings 2, the cylindrical surfaces of which slidingly engage shoes 3 which are supported in a self-adjusting manner on fixed bases 7 connected by tie bolts 8; the shoes 3 rock on pins 4 arranged parallel with the axis of the drum, the pins being carried by pieces 5 supported on transverse rollers 6, whereby a small axial movement of the drum can, occur on expansion thereof. The drum may be axially located by a separate base piece 9 carrying pivoted shoes 11, Fig. 2, against which the side faces of the drum ring slidingly engage, or, as shown in Fig. 6, one of the supporting shoes may have side flanges 13 to engage the side faces of the drum ring and such shoe is axially located by the pin 4 on which it rocks being provided with end flanges. This shoe, with 3' with its rocking pin 4, is mounted directly on its fixed base 7<SP>1</SP>. Alternatively, the drum ring may have side flanges to engage the sides of the shoe, Fig. 4, (not shown).
Patent GB-899571-A (GB)
Title: Improvements in or relating to the registration of printing formes
Inventor: HADLEY WILLIAM ALFRED
IPC: G03F9/00
Filed: 1959-10-09
Abstract: 899,571. Printing surfaces. LINOTYPE & MACHINERY Ltd. Oct. 4, 1960 [Oct. 9, 1959; June 27, 1960], Nos. 34239/59 and 22422/60. Class 100(2) [Also in Group XX] Apparatus for registering the component members of a printing forme 14 with a layout 15 comprises a forme supporting table 12, Fig. 2, having uprights supporting a canopy 3 on top of which is a transparent plate 13 supporting the artist's layout 15. A casing 11 is suspended from a carriage which runs along rollers 7 of a second carriage which in turn is movable along rails 4 fixed to the sides of the canopy 3. On top of the casing 11 are sodium lamps 17, Fig. 3, giving orange light and beneath the casing are mercury vapour lamps 16 giving blue-green light. The orange light reflected from the layout 15 is reflected at 19 into a dichroic mirror 20 positioned midway between the forme and the layout. A blue-green image from the forme 15 is reflected through the bottom of the casing 11 on to the dichroic mirror 20. In this way, a combined orange-blue image of the forme and layout is projected through a lens system 21 to a mirror 24 and via a further mirror 25 on to a screen 26 which may be of the Fresnel lens type. If any of the elements of the forme 14 are out of register, colour fringes will be produced where overlap occurs and the forme is adjusted until they disappear. There is also provided an alternative viewing device in the form of an eyepiece 27, Fig. 3, which is fixed to the casing and to which the combined images may be directed by way of mirrors 28 and 33. The mirror 28 is mounted on an arm 29, pivoted at 31 to the wall of the casing and movable so as to bring the mirror into or out of the light path by an external handle. The movement of the arm 29 is limited by stops on the wall of the casing, and the movements of this arm are damped by a dash pot. :