baber/WOPTO huggingface dataset:
Patent GB-1270247-A (GB)
Title: Synchro-control systems
Inventor: MASTERMAN JOHN MICHAEL
IPC: H02P25/20
Filed: 1968-06-19
Abstract: 1,270,247. Control of A.C. motors. DOWTY ROTOL Ltd. 12 June, 1968 [19 June, 1968], No. 29251/68. Heading H2J. A voltage signal on line 1 is applied to junction 6 where it is added to a feed-back signal from saw-tooth oscillator 8 whose output frequency varies between a maximum and minimum as the voltage signal changes from maximum positive to maximum negative values. A shaper 9 converts the saw-tooth oscillations into pulses which are applied to a frequency divider 11, an amplifier 17 delivering three-phase current to the stator winding 18 of a synchronous motor 5, while controller 15 ensures that the stator current remains constant despite changes in frequency. A fixed-frequency oscillator 21 is associated with shaper 23, frequency divider 25 and amplifier 29 to energize stator winding 30. The crossconnected rotor windings 36, 37 ensure that the rotor speed is half the difference between the speeds of the stator fields. The motor is reversed when the sign of the input signal voltage changes, the rotor being stationary when the signal is zero, so that the total rotation is proportional to the time integral of the voltage on line 1. In a modification, (Fig. 4, not shown), the pulses from shapers 9, 23 are transmitted to a unit which cancels coincident pulses and gives an output to either of two lines in accordance with the difference of the pulse frequencies. Each of these lines contains a one-shot multivibrator having a common filter whose output is a direct voltage which is either positive or negative according to the sense of the frequencydifference. This voltage is fed back to the summing junction 6. In a further embodiment, Fig. 5, an oscillator 103 provides a pulse frequency proportional to the magnitude only of the voltage on line 1. Gates 108 or 109 pass pulses delivered by oscillator 103 through store 105 in accordance with the sign of the signal on line 1 with regard to a datum signal on line 112. A fixed frequency oscillator 117 is associated with the store 105 and "OR" gates 121, 122 which deliver a pulse train whose frequency is the sum of the frequencies of oscillators 103, 117 to either frequency divider 127 or 128 depending on the sense of the input signal relative to its datum. Controllers 135 or 136 are alternately effective to modify the three phase voltages when the input signal is positive or negative. The stator windings receive signals at equal frequency when the input signal is zero. The motor may be used for the correction of positional errors. The motor may have a stator receiving one frequency signal and a rotor receiving the other. Alternatively, two separate motors respectively fed with the two frequencies may be connected to a differential gear.
Patent GB-994481-A (GB)
Title: Substituted n-phenyl-n-alkoxy-n-alkyl-ureas and a process for their manufacture
IPC: C07C275/64
Filed: 1961-08-14
Abstract: The invention comprises compounds of formula <FORM:0994481/C2/1> wherein R1 is an alkyl radical having 1 to 4 carbon atoms, R2 is a saturated or unsaturated aliphatic radical having 1 to 12 carbon atoms which may be substituted by chlorine, n is 0, 1, 2 or 3 and m is 0 or 1, with the exception of compounds of the formula <FORM:0994481/C2/2> wherein R is CH3 or C2H5 and X represents 0 to 3 chlorine atoms and wherein a methyl group may be present in conjunction with a chlorine atom.  The invention also comprises a process for the preparation of compounds of the first formula above wherein an amine of formula <FORM:0994481/C2/3> or a salt thereof is reacted with phosgene in an inert medium and the isocyanate is reacted without isolation with an O-alkyl-hydroxylamine R1-O-NH2 and the alkoxy urea obtained is alkylated with an alkylating agent in a mixture of an alkali metal hydroxide solution and alcohol.  The compounds are used in herbicidal and acaricidal compositions (see Division A5). In an example a solution of phosgene in toluene is mixed with a solution of aniline in toluene, the mixture refluxed for 6 hours, the excess phosgene removed by a current of nitrogen, the mixture cooled, n-butoxyamine is added, the N-butoxyurea is filtered off, suspended in a mixture of methanol and aqueous sodium hydroxide and treated with dimethyl sulphate to yield N-phenyl-N1-n - butoxy - N1 - methyl - urea.  The preparation of N - (3 - or 4 - chloro - or 3,4 - dichloro-or 2,4,5 - trichloro - phenyl) - N1 - methyl - N1-methoxyurea, N - (2 - methyl - 4 - chlorophenyl) N1 - methoxy - N1 - methyl - or - n - butylurea, N - (4 - chlorophenyl) - N1 - ethyl - or - isopropyl - or - n - butyl - or - 1 - or 2 methylpropyl- or -3-methylbutyl- or -allyl- or 3,3-dichloroallyl- or -dodecyl-N1-methoxyurea, N - phenyl - N1 - methyl - or - ethyl - or - n-butyl - N1 - methoxyurea, N - (2 - chloro - or - 2,4 - dichloro - or - 2,4,5 - trichlorophenyl) -N1 - n - butyl - N1 - methoxyurea and N - (4-methylphenyl) - N1 - methoxy - N1 - n - butylurea is also described in examples.  Reference has been directed by the Comptroller to Specification 852,422.ALSO:Herbicidal and acaricidal compositions containing as active ingredient a compound of formula <FORM:0994481/A5-A6/1> wherein R1 is a C1-C4 alkyl radical, R2 is a saturated or unsaturated aliphatic radical having 1-12 carbon atoms which may be chloro-substituted, n is 0, 1, 2 or 3 and m is 0 or 1 (see Division C2), together with a suitable carrier, are specified. Specified compositions are aqueous suspensions and a spray powder containing siliceous chalk, colloidal preservative and a wetting agent.  In Examples 24-28 the use of the compositions in treating weeds in corn, beans and peas and spider mites in pinks is described. Reference has been directed by the Comptroller to Specification 852,422.
Patent GB-626137-A (GB)
Title: Immersion anode
IPC: C25B9/04
Filed: 1946-10-02
Abstract: 626,137. Anodes for electrolysis ; couplings. COX, G. C. Oct. 2, 1946, No. 29356. Convention date, April 22. [Classes 38 (i) and 41] [Also in Group XVIII] A total immersion type anode for use in electrolysis, e.g. in the decomposition of saline solutions, comprises an anodic insoluble electrode such as a carbon electrode, formed in two parts 1, 4, united by a non- metallic externally threaded nipple 6, e.g. of carbon, one,  viz 4, of the parts having a passage aligned with a bore of substantially the same diameter in the nipple 6 to receive the insulation-covered conductor 10 to terminate in a cavity in the nipple. This cavity comprises a cylindrical packing chamber 11 which is packed to form a leak-tight joint between the conductor and the wall of chamber 11, and a conical anchoring chamber 12 provided in its wall with one or more peripheral recesses 14. Molten metal such as lead, silver, aluminium or any of their respective alloys, is poured into chamber 12 to embed and anchor the bared end of the conductor 10, the metal being such that on cooling it grips the nipple. In an alternative construction, the nipple is axially short as compared to its diameter and the anchorage chamber is of large diameter as compared to its axial height and has an undercut annular groove coaxial with the packing chamber. In another alternative construction a disc-like cap has a plurality of parallel elongated bars, each united at one end to the cap by a nipple, the conductor extending through a passage in the cap and being anchored as above described in only one of the nipples. The external surface of the nipple may be cylindrical as shown, or of double tapered type. Specification 540,487 is referred to.-
Patent GB-337911-A (GB)
Title: Improvements in grinding or crushing apparatus
IPC: B02C23/00
Filed: 1929-09-27
Abstract: 337,911. Rexworthy, H. S. Sept. 27, 1929. Ball and like mills.- In a tube mill in which rods 38 in segmental sections 36 of aligned, rotary, spiders 24, are provided, a side 31, Fig. 2, of the section is substantially tangential to a central circle and a side 28 is straight or formed by an arc of the interrupted circle forming the inner surface of the peripheral rim of the spider. The spiders 24 are attached to the drum 6 by wedge-bolts 53 and spigots 39, 42, each spigot 39 being clamped between the flanges 20 of the drum and each spigot 42 being surrounded by packing in a hole in the drum and is secured thereto by a bolt 48 and plate 47. The end-plates 7, 8 of the drum, Fig. 1, are provided with trunnions mounted in bearings and doors 55 for the insertion of the rods 38. The drum is driven through a sprocket 21 and the feed falls on the centre of the rods through a scoop 58 and pipe 57. A coarse sieve 17 and fine sieve 16 surround the central part of the drum, the sieve 17 being shorter in length than the sieve 16 so that coarse particles are returned back to the grinding chamber. The circumference of the spiders may be provided with packing rings 33 and stepped portions 26 are provided with scoops 27 to distribute the material to be ground. In a modification the feed tube 57 is provided with helical ribs, the screens are placed in the end plates 7, 8 and the scoops 27 arranged in the centre of the drum. The mill may be attached to the end of the drum of a ball mill, Fig. 8 (not shown), the ground material passing through a centre sieve into a passage communicating with lifting vanes between the two mills, whereby the material is discharged through a central orifice in the ball mill. The mill may be used for pulping material in a tank 88, Fig. 9, the spiders 79 being mounted on a shaft 78 passing through the tank. Pairs of spiders are used which are displaced angularly with respect to each other and the external rims of the spiders are provided with bars 87 which aid in the disintegration of the pulp. The ground material may be removed from the mill by air suction as shown in Fig. 14. Material enters the mill through a hopper 94 and the ground material is carried by the air current up the tube 95 into a chamber 96 from which it is discharged through the outlet 98. A deflector 101 at the end of the pipe 95 and a baffle 97 in the chamber 96 present a tortuous path for the ground material whereby the coarse particles fall to the bottom of the chamber 96 and are returned to the mill through a rotary seal 100. A flap valve 102 prevents choking in the outlet 92 of the mill. Specification 190,941 is referred to.
Patent GB-191525-A (GB)
Title: Improvements in or relating to means for supporting telephone transmitters and the like
IPC: H04M1/04
Filed: 1921-11-04
Abstract: 191,525. Graham, E. A. Nov. 4, 1921. Supporting. - A telephone transmitter a, for use on a motor car &c., is provided with a knob c, and a support d fixed to the car is adapted to hold the knob c in an easily detachable manner but firmly so as to prevent the transmitter swinging. The knob c enters an aperture f in the trough-like flanged stamping d and is held in a slot e, of a width only slightly larger than the diameter of the neck c<1>, by a spring g. The transmitter may be provided with a switch to be closed by a spring push b. The stamping may contain insulated terminals h for connecting the transmitter to the receiver.
Patent GB-304400-A (GB)
Title: Improvements in or relating to cushions
IPC: A47G9/02
Filed: 1927-11-03
Abstract: 304,400. Lowe, J. N. Nov. 3, 1927. Cushion covers.-A wedge-shaped cushion cover has at one end a mouth extending from side to side which is fitted with a sliding clasp fastener 23, 24, a tongue 27 being provided beneath the mouth to prevent damage to the cushion 11 by the clasp 26. The ends of the cushion cover are secured by piped seam 17 which afford the necessary hand hold when operating the fastener clasp. Specification 12261/15 [Class 44, Fastenings, Lock &c.], is referred to.
Patent GB-617018-A (GB)
Title: Improvements in or relating to humidors for tobacco and the like
IPC: A24F25/02
Filed: 1946-10-03
Abstract: 617,018. Humidifiers for cigarettes &c. LOMBARD, J. S. Oct. 3, 1946, No. 29489. [Class 130] A humidifier for tobacco, cigarettes, cigars and the like comprises a container having spaced inner and outer walls 7, 2 respectively forming a sealed air space 1, a tank 18 formed on the outer side of wall 7 being filled through a tube 23 which passes through the top of the tank and an inturned flange of the wall 2 and which serves also as a guide for the indicator 26 of a float 27 acted on by the liquid in the tank. The indicator is visible at 24 when the liquid level in the tank is normal. The wall 7 has perforations 29 coacting with a slot 30 in a rotatable member 8 fitting closely within the wall 7, the adjustment being indicated by letters P.T.C. (Fig. 11) and serving to uncover a greater or less area of the perforation according to whether tobacco, cigars or cigarettes are being stored. The container is closed by a lid 11 preferably of wooden discs, a sealing rim of cork being located at 17. In Fig. 2 the device is fitted with a cigar rack comprising a base 39 and a stem 42 on which is carried a perforated disc 45. In another modification, Fig. 12, a cigarette rack has perforated vertical walls and the cigarettes are retained horizontally by flanges 36, 37. By rotating the rack in the container either end of the cigarettes may be directed towards the perforations 29.
Patent GB-179505-A (GB)
Title: Pendulum weighing-scale
IPC: G01G1/26
Filed: 1921-11-07
Abstract: 179,505. Wistoft, S. May 2, 1921, [Convention date]. Pendulum-weight apparatus.-Relates to a pendulum weighing-scale and to means for increasing the weighing capacity thereof when desired, by the removal of a counterpoise from the weigh-beam. The weigh-beam 4 carries the usual counterpoise 3 on the short arm, and is formed at the extremity of the long arm so as to receive the capacity-increasing counterpoise 16. This counterpoise is lowered on to the beam by means of a handle 22 and hooks 19. The weigh-beam is coupled by a fiexible band 8 to the pendulum lever 11 which carries a pointer 29 indicating weights on two graduated scales 27, 28 for use respectively with and without the counterpoise 16 in operative position. A dash-pot 30 connected to the weigh-beam minimizes shock. The Specification as open to inspection under Sect. 91 (3) (a) describes also a dash-pot connected to the hooks 19. This subject-matter does not appear in the Specification as accepted.
Patent GB-205700-A (GB)
Title: Method of and apparatus for making metal castings, particularly for use in dental, gold- and silver-smith work
IPC: A61C13/20
Filed: 1922-10-30
Abstract: 205,700. R÷nn, J. A. Oct. 30, 1922. Casting-machines.-Castings particularly those for dentists and jewellers are cast in a compression machine in which the pressure is produced by the successive ignition of a rapid and slow burning cartridge to produce an explosion-like combustion. The cartridges are such that the gaseous product of combustion comprises only pure carbonic acid. The rapid combustion cartridge may consist of carbon and potassium chlorate with a small amount of dextrine as a cement, and the slow combustion cartridge may be of nitrate of potassium, potassium chlorate, sawdust and dextrine. The flask 3 is mounted below a guide 6 for a cap-shaped head 16 connected by a ball and socket joint to a stem 5 fitted with a handwheel 12, and adapted to contain the cartridges 22, 23. A groove 8 in the stem with bayonet slot end 10 engages a pin in the guide to maintain the head in its raised position. In the lower position tight joint is made on the flank by a packing 18 under pressure produced by pins 13 entering cam slots 15 a second bayonet portion 9 of the slot 8 permitting the necessary rotation. Flasks.-A wire 19 in the flask becomes sufficiently heated during the melting of the charge to ignite the explosive. In a modification electric ignition may be employed. The flask seats in a spigot 21 and is fitted with a grating 20.
Patent GB-192198-A (GB)
Title: Improvements in reinforcements for reinforced concrete
IPC: E04C5/02
Filed: 1921-11-07
Abstract: 192,198. Wakelam, H. Nov. 7, 1921. No Patent granted (Sealing fee not paid). Drawings to Specification. Reinforced concrete. - Reinforcing bars are formed along the length with anchoring projections, indentations, grooves, &c. separated by regular intervals which correspond with a unit of length or a multiple or submultiple thereof. Reference has been directed by the Comptroller to Specifications 18290/07, 26121/07, 15349/08, 204/09, 6005/09, 14063/11, 39/14 and 156,129.
Patent GB-520155-A (GB)
Title: Means for permitting traffic to pass over hoselines
IPC: E01F9/529
Filed: 1938-10-13
Abstract: 520,155. Hose Bridges. ROBERTS, S. F. Oct. 13, 1938, No. 29664. [Class 107] Relates to ramps for facilitating the passage of traffic over hose pipes of the kind comprising resilient pads a hingedly or flexibly connected by a strip b which, with the adjacent sides of the pads, forms an intervening space e for the hose. According to the invention, the strip b is so arranged that it forms a roof to the intervening space. The pads are formed of a canvas or leather outer cover stuffed with cork or rubber elements and stitched together by string c the ,strip b being part of the outer cover. The ramp may be readily folded about the strip b and carried by handles g.
Patent GB-976593-A (GB)
Title: Preparation of 1:2-diphenyl-4-alkyl-3:5-dioxo-pyrazolidine
Inventor: TURNER EUSTACE EBENEZER
IPC: C07D231/34
Filed: 1962-08-02
Abstract: 1, 2-Diphenyl-4-alkyl-3, 5-dioxo-pyrazolidines, in which the alkyl group has at least 4 carbon atoms, and metal salts thereof, are prepared by condensing an a , a , a -tri(alkoxycarbonyl) alkane, in which the alkoxy groups contain 1 to 4 carbon atoms and the alkane group contains at least 5 carbon atoms, with hydrazobenzene in the presence of an alkali metal alkoxide, an alkali metal alkyl or aryl or an alkali metal amide as condensing agent, and, if desired, liberating the basic compound from the alkali metal salt of the pyrazolidine formed.  The reaction is preferably carried out at 100 DEG  to 200 DEG C. and an inert solvent having a boiling point above the reaction temperature may be used. Specification 976,594 is referred to.
Patent GB-1447715-A (GB)
Title: Injection moulding process apparatus and product
IPC: B29C45/27
Filed: 1974-07-04
Abstract: 1447715 Injection moulding apparatus DU PONT OF CANADA Ltd 4 July 1974 [13 July 1973] 29761/74 Heading B5A A balanced runner system for injection moulding apparatus comprises four gates 3-6 symmetrically spaced in two dimensions about a central gate 2, and an inlet 8 connected to the gates 2-6 by a plurality of runners 9, 10, 12, 13, 14 having lengths and cross-sections such that the runner system is capable of supplying molten polymer to each gate at substantially the same rate. The runner system may be a hot runner system or an insulated runner system which may have hot probes. In modifications (not shown) the primary runners 9, 10 slope downwardly towards a plate 7 forming part of a mould, or the runners 9, 10 may contain a right-angled bend in the direction of plate 7. Fig. 2 (not shown) shows a modification in which the runners (16, 17) connecting the junction 15 to the gates 3, 4 are rectilinear instead of right angled as in Fig. 1.
Patent GB-188528-A (GB)
Title: Dead key actions for typewriting machines
IPC: B41J25/20
Filed: 1921-11-08
Abstract: 188,528. Marks, E. C. R., (Corona Typewriter Co., Inc.). Nov. 8, 1921. Type-lever machines; accenting-arrangements. - -Type-levers bearing accenting-types are arranged to operate directly a device for preventing operation of the letter-spacing mechanism; in shift machines, the accenting-types are arranged as lower-case characters, and the device for preventing operation of the letter-spacing mechanism is rendered ineffective when the shiftmechanism is operated. The invention is shown applied to a machine of the kind described in Specification 21006/09 and comprising an escape. ment lever 5 on the carriage bad 11 operated by a tappet 6 on a bail 7 which is connected to a universal bar 12 operated by the key-levers 17, the bell 7 moving vertically with the carriage bed when the latter is shifted. The tappet 6 is now pivoted to the bail and co-operates with a slide 27 engaging a finger 35 on a rock-shaft 29 which is formed with a bend 36 in the path of the typelevers 19 that bear accenting-types. When such type-levers are operated, the rock-shaft raises the slide, and an incline 28 thereon moves the tappet and thereby prevents operation of the escapement lever. When the carriage is shifted the tappet is raised out of engagement with the slide and the type-levers 19 are ineffective to prevent operation of the letter-spacing mechanism, the upper-case characters on the type-levers printing in the ordinary manner. Normally, the tappet is held in contact with a stop 26 on the bail by means of a spring 25, and a finger 40 on the rock-shaft is held in contact with a stop 43 by means of a spring 39. The ink-ribbon vibrator 45 is operated by the bail 7 at each operation of the type-lexers, preferably bv the mechanism described in Specification 2127/13.
Patent GB-1196133-A (GB)
Title: Improvements in and relating to Machines Suitable for Use in Operating on Marginal Portions of Shoe Uppers
IPC: A43D37/00
Filed: 1967-06-28
Abstract: 1,196,133. Roughing &c. shoe uppers. BRITISH UNITED SHOE MACHINERY CO. Ltd. 28 June, 1967 [29 June, 1966], No. 29808/67. Heading B4B. [Also in Division B3] A machine for reducing and roughing the marginal portion of a shoe upper S comprises an angularly adjustable support 9 for the shoe upper, a roughing wheel 1 in the form of a wire brush driven about a horizontal shaft 3 and having a portion which extends through a slot in the support 9, and a presser roll 22 freely rotatable about an axis lying in the plane of rotation of the wheel 1. The support 9 is provided with adjustable guides 14 for the shoe upper. The roll 22 is carried by a support 21 which is adjustable angularly, heightwise and lengthwise on a bracket 20 which is adjustable widthwise on the support 9. The support 21 has two projections 28, 29 between which the roll 22, which is carried on a pin 30, is mounted. The diameter of the roll 22 is greater at one end of the roll than at the other end, the greatest diameter of the roll is less than the length of the roll, and the lengthwise periphery of the roll corresponds approximately to an arc of the periphery of the wheel 1.
Patent GB-965321-A (GB)
Title: Packaging
Inventor: BROOKS THOMAS JERRAM
IPC: B65B31/06
Filed: 1962-08-03
Abstract: 965,321. Suction cleaners. RIDGECOURT Ltd. July 17, 1963 [Aug. 3, 1962], No. 29836/62. Heading A4F. [Also in Division B8] A device for evacuating filled bags prior to sealing comprises a nozzle 12 apertured along its length, the application of suction to the apertures being controlled by a slide valve 17. The bag is drawn over the nozzle and its mouth gathered manually round the valve 17 which is then actuated to evacuate the bag. The nozzle extends from a chamber 5 communicating with a cushioning chamber 3 by a pipe 8 and manually operated valve 10. A connection 4 is joined to a suction source (not shown). The pipe 8 serves to prevent matter being drawn into the suction source, it being retained in the chamber 5. Several nozzles may extend from the chamber (not shown).
Patent GB-1091815-A (GB)
Title: Method of and apparatus for removing bilge oil from ships
IPC: B01D17/02
Filed: 1966-07-04
Abstract: 1,091,815. Disposal of oily bilge water. SIMMERING - GRAZ - PAUKER FUR MASCHINEN, KESSEL-U, WAGGONBAU A.G. July 4, 1966 [July 22, 1965], No. 29848/66. Heading B7M. Oily bilge water is pumped through inlet pipe i of a ship into a settling chamber a and oil which accumulates over the oil-water interface I is fed through outlet hole h to a burner device in at a rate controlled by needle valve n, the pumping being effected by steam generated in boiler tubes u by the burner device m. The steam preheats the oily bilge water on pumping it into the settling chamber a by injector pump v. Burner pan r of the burner device m is pivotally mounted and linked to needle valve n to control the amount of oil fed down over trickle plates o 1 .