baber/WOPTO huggingface dataset:
Patent GB-825689-A (GB)
Title: Cage for rolling bodies in rolling bearings
IPC: F16C33/56
Filed: 1957-10-22
Abstract: 825,689. Bearing cages. SVENSKA KULLAGERFABRIKEN A.B. Oct. 22, 1957 [Oct. 23, 1956], No. 32993/57. Class 12 (1). A roller bearing cage comprises a plurality of cage elements made of plastic and a pair of metal rings 5, between which the plastic elements extend and are located accurately with respect to one another, the plastic cage elements providing the only surfaces of the cage which the rollers contact. Each cage element consists of two arcuate side-pieces 6 connected by a cross-bar 7 which is hollowed out at 8 and has an inwardly directed tongue 9 extending over the middle portion of its length. A projection 11 on each side-piece 6 engages a hole in the adjacent metal ring 5, and flanges on the ring 5 are bent over the edges of the side-piece. The plastic elements may be made of polyamide resin. The invention is also applied to a two-row spherical roller bearing.
Patent GB-263869-A (GB)
Title: Improvements relating to electric synchronizing apparatus
IPC: H02J3/42
Filed: 1926-12-31
Abstract: 263,869. British Thomson-Houston Co., Ltd., (Assignees of Traver, O. C.). Dec. 31, 1925, [Convention date]. Synchronizing dynamo-electric machines.-The circuit controlling the closure of a switch connecting two alternating current systems is closed by a synchronizing device a predetermined time prior to phase-coincidence and the device, which is driven at a speed dependent upon the difference in frequency between the systems, provides a time interval independent of said speed. The time interval is determined by the space at phase-coincidence between the contacts which close the circuit and this is varied according to the speed. The circuit of a relay 7 controlling in a synchronizing switch 4 is closed by the engagement of contacts 34, 35 of the device provided that its contacts 32, 33 are also in engagement. A shaft 11 driven as stated above, e.g. by a stator 36 and rotor 38, carries a fixed disc 10 and loose disc 12 linked by a coupling spring 28. A magnet 17 causes an angular displacement between these discs corresponding to the speed of the shaft which is communicated by a pinion 22 to a sleeve 15 which carries an insulating disc 13 so that relative movement proportional to the speed takes place between a contact 32 carried by the disc 12 and a segmental contact 33 in the disc 13, and a contact 34, in connection with the contact 33, is similarly displaced from its normal position in relation to the shaft. When the frequency difference is low enough to permit synchronization the contacts 32, 33 engage and the contacts 34 and 35 then close the control circuit. The time interval elapsing between this closure and the moment of synchronism is independent of the relative frequencies owing to the displacement of the contact 34 in proportion to the shaft speed. The stator of the driving motor is adjustable to set the device.
Patent GB-906178-A (GB)
Title: Improvements in or relating to thermionic tube amplifiers
Inventor: CHALK GRAEME OLIVER
IPC: H03G3/22
Filed: 1960-09-27
Abstract: 906,178. Automatic gain control. ENGLISH ELECTRIC VALVE CO. Ltd. May 8, 1961 [Sept. 27, 1960], No. 33188/60. Class 40 (5). The invention relates to an amplifier employing a quadrupole electron beam tube, in which an electron beam from electron gun 1 is constrained by an axial magnetic field in its passage down the tube to collector electrode 5. The beam first passes between input coupler electrodes 2, in which it is modulated by the signal to be amplified, then between the quadrupole electrode system 3 to which a pump frequency approximately equal to the signal frequency is applied, and finally between output electrodes 4 from which an amplified signal is obtained. The input signals cause the path of the electrons to become helical, and due to the amplification in the tube, the amplitude reached at the output electrodes 4 is sufficient for electrons to actually strike these electrodes, so causing overloading of the tube, before a correspondingly large amplitude is reached at the input electrodes 2. To allow the tube to handle a larger input signal, the output, after amplification in succeeding stages 8, is applied to a rectifier 10, the D.C. output of which is added to the positive bias applied over resistor 11 from terminal 12 to the electrodes 3. The bias from source 12 also acts as a delay voltage on diode 10; when this is exceeded, the D.C. bias on electrodes 3 is increased, increasing the speed of the electrons through the quadrupole electrode system, and so reducing the gain in the tube. A larger input is then permissible before overloading sets in. The bias potential on terminal 12 may be made variable.
Patent GB-1489849-A (GB)
Title: 4,4'-bi-piperidylidene derivatives and their use as polymer stabilizers
IPC: C08K5/3412
Filed: 1975-08-08
Abstract: 1489849 4,4<SP>1 </SP>- Bipiperylidene derivatives SANKYO CO Ltd 12 July 1976 [8 Aug 1975] 33228/75 Heading C2C [Also in Division C3] Novel 4,4<SP>1</SP>-bipiperylidene derivatives of the formula wherein: each of the symbols Z represents a hydrogen atom or an alkyl group; and X and Y are the same or different and each represents a hydrogen atom, an oxyl group, a hydroxy group, an alkyl group, an alkenyl group, an alkoxyalkyl group, a cyanoalkyl group, an aliphatic acyl group, a 2,3-epoxypropyl group, an unsubstituted aralkyl group, an aralkyl group which is substituted in its aryl moiety, a group of formula -CH 2 CH(R<SP>1</SP>)OR<SP>2</SP> (wherein R<SP>1</SP> represents a hydrogen atom, a methyl group or a phenyl group; and R<SP>2</SP> represents a hydrogen atom, or an aliphatic, aromatic, araliphatic or alicyclic acyl group), a group of the formula -CH 2 COOR<SP>3</SP> (where R<SP>3</SP> represents an alkyl group, an alkenyl group, a phenyl group, an aralkyl group or a cyclohexyl group), or a group of the formula -COOR<SP>4</SP> (wherein R<SP>4</SP> represents an alkyl group, a benzyl group, a phenyl group or a cyclohexyl group, and acid addition salts thereof, are prepared by several methods. The novel compounds are useful as stabilizers for polymeric compounds.
Patent GB-172655-A (GB)
Title: Improvements in mineral oil emulsions
IPC: A61K47/02
Filed: 1921-12-10
Abstract: 172,655. Lubricant Laxatives Corporation, (Assignees of Haley, C. B.). Dec. 11, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Medicines for internal use; emulsions, making. -Highly refined mineral oils for use as internal lubricants are emulsified by intimate admixture with milk of magnesia. Equal proportions by volume are stated to be most satisfactory. The emulsion may be prepared by treatment in a paint mill or by homogenization. No additional emulsifying agent is added.
Patent GB-295887-A (GB)
Title: Improvements in or relating to recording electrical measuring instruments
IPC: G01R13/08
Filed: 1927-12-08
Abstract: 295,887. Electroflo Meters Co., Ltd., (Republic Flow Meters Co.). Dec. 8, 1927. Index hands and pointers.-The index 77 of a moving-coil galvanometer has an enlarged portion 56 which is slipped over the pivot pin 57, of the coil 35 and secured by a plate 80, Fig. 21, sprung under struck-up portions 79 of a plate 56 attached to the coil. To adjust the zero of the instrument the upper pivot is attached to a plate 63<1> held by a spring-friction grip in a flanged plate 64'. One plate can be adjusted relatively to the other and for final adjustment the plate 64<1> can be turned by means of a screw 68<1> having an eccentric pin 67<1> engaging with a slot in an arm 65<1> attached to the plate. The screw 68<1> can be connected by a, rod with universal joints to a screw in the casing 26. Recording by co-ordinates.-The pointer 77 extends over a chart 88, Fig. 12, passing over a print bar 86 and driven by a roller 96 with projections 99 engaging with holes in the chart. The roller 96 is driven by clockwork which at regular intervals depresses a frame 90 so as to force the pointer 77 downwards and mark the chart 88 by means of a type-writer ribbon, also driven by the clockwork. The chart is held against the roller by spring plates 102 which can be turned back tc release the chart, which can then be placed above the plates, so that it is no longer moved by the roller. When two galvanometers are employed each has a separate chart and the two charts can be used independently. The charts pass over a backing plate having a groove, along which a pointed instrument may be run to facilitate detachment of a portion of the chart. The roller 96 is frictionally attached to its spindle 97 so that it can be manually adjusted thereon. The recording devices are carried on the opposite side of the plate 31 from the galvanometers.
Patent GB-799608-A (GB)
Title: Improvements in or relating to the manufacture of moulds for castings
IPC: B22C1/18
Filed: 1955-11-21
Abstract: A binder for foundry moulds from which silica is formed in situ is an alkali metal silicate solution in which the molecular ratio <FORM:0799608/III/1> , (M being the alkali metal), is between 4.7 and 5.2 and in which the silica content is between 200 and 270 grams per litre of solution.  The solutions are prepared by reaction, at a moderate temperature and atmospheric pressure, of hydrated silica and a commercial solution of alkali metal silicate.  In an example, a solution of sodium trisilicate 38-40 B<\>ae, silica gel containing 14 per cent water, and water, are mixed and heated to 95 DEG  C. Instead of silica gel, precipitated silica or fossil silica of the kieselguhr type may be used.  In a further example, potassium trisilicate and precipitated silica are used. Specification 715,576 is referred to.
Patent GB-816748-A (GB)
Title: Improvements in or relating to devices for handling and transporting a plurality of elements
IPC: G03B17/34
Filed: 1957-10-25
Abstract: 816,748. Filing papers. EASTMAN KODAK CO. Oct. 25, 1957 [Oct. 29, 1956], No. 33332/57. Class 146(1) [Also in Group XXIII] A device for handling thin elements 10 in stack formation each of which has a non-circular aperture 12 adjacent one edge, comprises a handle member 16 having secured thereto a relatively long, hollow support member 30 congruous in crosssection to and adapted to be inserted in the non-circular aperture in the elements, and means mounted adjacent the free end of the supporting member for retaining the elements thereon. The retaining means comprises a pair of bell crank levers 53 pivoted within the support arm 30 and rotatable through slots 40 between an operative position for engaging the under surface of one of the elements 10 and an inoperative position for permitting the support member to be inserted or withdrawn from the apertures in the elements 10. The bell crank levers have supporting edges 58 which are normally held in engagement with the surface of the lowermost element of the stack by a spring- pressed strip 43 slidable within the support member 30. The strip 43 is operated to rotate the bell crank levers 53 into inoperative position by depressing a button 44 secured to the strip and extending through an elongated slot 48 in the side of the support member 30. The movement of the strip is limited by a pin 49 secured to the member 30 and engaging a slot 50 in the strip.
Patent GB-1303030-A (GB)
IPC: B22D17/10
Filed: 1971-07-15
Abstract: 1303030 Casting-machines NIPPON LIGHT METAL CO Ltd 15 July 1971 [15 July 1970] 33345/71 Heading B3F A pressure die casting machine has means 9 for introducing oxygen into the injection cylinder 6 and mould cavity 4, and heat insulated zones within the cavity 4. The zones may be formed by inserts 10 of ceramic or metallic material located in cavities in the mould walls. The inserts may have heating wires embedded therein and serve to retard the solidification of the molten metal in the said zones compared with that in other parts of the mould cavity. This ensures that any shrinkage pores are concentrated in these zones which are located so as to correspond to unimportant parts of the casting, e.g. parts which are subsequently removed from the casting in order to obtain the finished product. Oxygen is introduced into the injection cylinder 6 and mould cavity 4 to displace the air therefrom prior to injection of the molten metal. The oxygen then reacts with the metal to form metal oxide particles in the casting and enables a casting almost free from blow holes to be obtained. Reference has been directed by the Comptroller to Specification 1,183,468.
Patent GB-1459546-A (GB)
Title: Ploughs
IPC: A01B3/421
Filed: 1974-07-29
Abstract: 1459546 Turnover plough control V LEMKEN 29 July 1974 [9 Aug 1973] 33389/74 Heading A1B A turning device for a two-way plough has a locking mechanism and comprises a hydraulic piston 1 and cylinder 3 fitted with a fluid supply line 11 that includes a throttle and slide valve (neither shown) whereby the line can be connected to the pump of a tractor to a vacuum oil tank or to neither. The cylinder has a fixed frusto-conical ring 23, whose taper is opposite to that of a frusteconical annular clamp 24 that slides on the piston and which is separated from the ring by balls 25 which engage within axial grooves in the ring and clamp. The clamp is urged upwardly into locking engagement with the ring by a spring 26 which is stronger than a spring 42 which acts upon a sliding control ring 27 that abuts the top of the clamp 24. During plough operation the pressures above and below the control ring are equal and the ring 23 and clamp are locked by virtue of the stronger spring 26. To turn the plough the line 11 is connected to vacuum whereby the pressure below the control ring 27 drops and the fluid above the piston overcomes the spring force differential to cause the control ring to urge the clamp out of locking engagement. Due to the eccentric positioning of the centre of gravity of the plough the plough rotates and causes the piston to rise and expel fluid through a spring biassed pressure relief valve 45. As the dead centre position of the plough is passed the space above the piston becomes pressure less and the valve 45 closes. A non-return ball valve 41 then equalizes the pressure above and below the control ring 27 and the clamp is returned to the locking position.  In modifications the supply line is connected as shown in broken line. Alternatively the line inlet is connected to the line mid-way between the top and bottom of the cylinder in which case the ball valve 41 is positioned to the left of a spring 44 and the valve 45 is spring biassed within a bore 40 of the control ring 27. In a further modification the piston is double acting, the ball valve 41 and valve 45 are both arranged at the top of the cylinder and an equalizing line connects the space above the piston to the space around spring 42. The ball valve and valve 45 may alternatively both be arranged in the control ring.
Patent GB-1514112-A (GB)
Title: Preparation of quaternary phosphorus compounds and phosphorus ylides useful as intermediates in the preparation of sterols
IPC: C07J53/00
Filed: 1976-01-02
Abstract: 1514112 Quaternary phosphorus compounds and phosphorus ylides UPJOHN CO 2 Jan 1976 [27 Jan 1975] 33390/76 Divided out of 1514111 Heading C2P A betaine (III) of the formula wherein A is the portion of a Wittig reagent inert to the reaction medium and R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> are each H or methyl is obtained by reacting a methylene phosphorane: AP = CH 2  with an epoxide (IV) in an inert organic solvent. The betaine (III) may be converted to the corresponding ylide by contact with a strong base, e.g. sodamide, NaH or a lithium amide, expecially N-butyl lithium. The group AP may be the group X 3 P where each X is phenyl optionally substituted 1 to 3 times by a C 1 -C 4  alkyl group, or two X's are phenyl and the third is p-carboxyphenyl or each X is di(C 1 -C 3  alkyl)amino, and in this case the ylide has the formula where D is OM and M is the metal cation of a strong base. The betaine (III) in which AP is X 3 P may be converted to an ylide of Formula II wherein D is -OC(O)R<SP>4</SP> and R<SP>4</SP> is C 1 -C 6  alkyl, phenyl, benzyl or phenethyl, by reaction with an appropriate acylating agent containing the group R<SP>4</SP>, e.g. an R<SP>4</SP> acid anhydride or an R<SP>4</SP> acyl halide, to form a quaternary ammonium compound and then reacting the latter with a strong base, e.g. lithium diisopropylamide to form the ylide in which D is -OC(O)R<SP>4</SP>. Specified epoxides (IV) are ethylene oxide and isobutylene oxide.
Patent GB-915817-A (GB)
Title: Process for the treatment of cellulosic textile fabrics
IPC: D06M15/423
Filed: 1960-09-29
Abstract: Cellulosic fabrics are treated with an omegacarboxy alkyl urea having the formula NH2CONHRCOOH, in which R is an alkylene group, and the omegacarboxy alkyl urea polymerized in situ to form a wash-resistant resin.  The omega-carboxy alkyl urea, which preferably has 5-10 carbon atoms in the alkylene chain, may be applied to the fabric in solution or suspension and the fabric then dried and heated to polymerize the acid, no acid polymerization catalyst being required since the omega-carboxy alkyl ureas are self-polymerizing under the action of heat.  The omega-carboxy alkyl ureas also harden aminoplast resins and their precondensates, e.g. urea-formaldehyde, melamine-formaldehyde and ethylene urea-formaldehyde resins, and cellulosic fabrics may be treated with a composition comprising an aminoplast resin or precondensate thereof and an omega-carboxy alkyl urea and the composition then hardened. Specification 913,713 is referred to.ALSO:The crease resistance and tensile strength of cellulosic fabrics, e.g. cotton and regenerated cellulose, are improved without greatly affecting their ability to absorb water by treating them with an omega-carboxyalkyl urea having the formula NH2CONHRCOOH, in which R is an alkylene group, and polymerizing the omega-carboxyalkyl urea in situ to form a wash-resistant resin.  The omega-carboxyalkyl urea, which preferably has 5-10 carbon atoms in the alkylene chain, may be applied to the fabric in solution or suspension and the fabric then dried and heated to polymerize the acid, no acid polymerization catalyst being required since the omega-carboxyalkyl ureas are self-polymerizing under the action of heat.  The omega-carboxyalkyl ureas also harden aminoplast resins and their precondensates, e.g. urea.  Formaldehyde, melamine-formaldehyde and ethylene urea-formaldehyde resins, and cellulosic fabrics may be treated with a composition comprising an aminoplast resin or precondensate thereof and an omega-carboxyalkyl urea and the composition then hardened. Specification 713,713 is referred to.
Patent GB-496162-A (GB)
Title: Improvements in air horns
IPC: G10K7/00
Filed: 1937-12-03
Abstract: 496,162. Fluid pressure horns EKMAN, O. I. H. Dec. 3, 1937, No. 33510 [Class 13] An air-horn comprises a chamber containing air under pressure and from which the com pressed air is periodically expelled through on( or more openings provided with a valve or valves controlled in part by a magnetic or other retaining power which tends to maintair the valve or valves in the closed position anc which is such that it decreases with increased opening of the valve or valves and in part by a counter power tending to open the valve or valves alternatively brought into and out of action or alternately increasing and decreasing and such that its operating strength or maximum strength is sufficient to overcome the retaining power applied to the valve or valves. As shown in Fig. 1, a valve 6 forming a closure member for a chamber 1 to which compressed air is supplied through an opening 2, is normally held in closed position by the attraction of an electromagnet 8, 9, 10 energized from a source 12. When the pressure in the chamber 1 rises to an extent to overcome the attraction of the magnet the valve 6 moves from its closed position and opens at an accelerated rate to allow air to pass to the opening 5 and horn 4. In a modification, Fig. 2 (not shown), the chamber above the valve 6 has a restricted outlet where it opens into the horn 4. In a modified construction, Fig. 3, the diaphragm valve 6 is of conical shape and normally rests on a conical surface 15 of a cup-shaped core 9 into which compressed air is supplied through openings 2. The valve is guided and centred by a spring 17 which is such that its strength is small compared with the attractive force of the electromagnet. In a further modification, Fig. 4 (not shown), two or more diaphragm valves are connected to the rim of a cup-shaped core and are supported at their inner ends on a cup-shaped polepiece through which the magnetic circuit is completed. The cup-shaped core forms the chamber to which the fluid under pressure is admitted, and the initial movement of one diaphragm opens the magnetic circuit and effects the immediate opening of the remaining valve members. A further construction is shown in Fig. 5, in which a core 9 is formed with a cup-shaped extension 10 closed by a cover 22 carrying a diaphragm 21 on which is mounted an annular armature 6 normally closing a small chamber 1 to which air is fed under pressure from a chamber formed in a magnetic casing 3. When the pressure in the chamber 1 is sufficient to lift the armature from its seat, air flows to passages 26 leading to a horn 4. The armature is provided with a peripheral flange 25, and a stop disc 23 secured to the cover 22 limits the upward movement of the diaphragm 21. The armature 6 or chamber 1 may be formed with partitions and the member 10 may be formed by curved magnetic bars separated by non-magnetic portions, Fig. 6 (not shown). The diaphragm 21 may be replaced by a number of elastic spokes or the armature 6 may be formed by iron sprayed on the peripheral annular portion of a disc of non-magnetic material.
Patent GB-342372-A (GB)
Title: Improvements relating to machines for making paper bag tubes
IPC: B31B160/10
Filed: 1929-11-05
Abstract: 342,372. Paper tubes. WINDMÍLLER & HÍLSCHER GES., Lengerich, Westphalia, Germany. Nov. 5, 1929, No. 33648. Convention date, Nov. 24, 1928. [Class 99 (ii).] A machine for making paper tubes for forming bags from a continuous paper web consists essentially of folding cylinders 2, 3 provided with engaging blades 14, 15 and tongs 17, 18 respectively, a reciprocating doffer 4, and a folder 5. The web is fed between the cylinders 2, 3, after being cut into suitable lengths by cutters disposed to the right of the cylinders, and the doffer 4, which serves to detach the leading edge of the paper length from the cylinder 3, is drawn away from the cylinders when the forward end 13 of the paper length 1 arrives in position over the folder 5. At about the same time the folder blade 14 coacts with the tongs 17, Fig. 2, to form a crease in the paper, and the tongs grip the paper and carry it forward to the position shown in Fig. 3, where the folder 5 turns the forward end over on to the succeeding portion. Shortly afterwards the second blade 15 contacts with the paper and forces it into the tongs 18 to form a second crease, Fig. 4. At the same time the tongs 17 are opened by a controlling eccentric to release the leading folded edge 20 and allow it to contact with bands 22 which travel from right to left as shown and tend to carry the paper with them. When the tongs 18 reach the position shown in Fig. 6 the undersurface of the rear edge 21, which has been pasted by a pasting device 16 on the cylinder 2, applies itself to the front part 13, and the tube so formed is gripped between the roller 3 and a delivery belt 23 travelling from left to right, the tongs 18 being released and the pasted seam being well pressed down during this stage.