baber/WOPTO huggingface dataset:
Patent GB-415409-A (GB)
Title: Improvements in and relating to extruded metal tubes and extrusion presses for producing such tubes, for example lead sheaths for cables
IPC: B21C25/06
Filed: 1933-02-22
Abstract: 415,409. Squirting. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Feb. 22, 1933, Nos. 5436 and 5437. Convention dates, Feb. 22, 1932 and Dec. 20, 1932. [Class 83 (iv).] The seam or seams of an extruded metal tube have a direction or form divergent from the radial Projections 23, Figs. 1, 4<a>, of stream-lined forrr and with staggered portions 231, 232, produce a seam with overlapped parts 235, 236, Fig. 5. The lead channel comprises an inlet 13 and two passages 14 formed in the exterior of an insert 4, the lines of flow over the whole cross section being of equal length. The points 21, 22 are formed similarly to the projections 23 and may replace them. The lead channels may alternatively be formed in a divided press block, in the mandrel holder, or in the interior of a tubular insert. An annular projection 29 or ring of projections is provided, preferably on an insert 30. Heating elements are carried in holes 8. In a modification, the projections may be formed on an insert 45, Fig. 6, and may comprise a ring 46 and ribs 47 to divide the lead into two concentric tubes which weld together with non-radial seams. A number of forms of insert members 45 with projections are described, and the seam may be of slot-andtongue or toothed formation. A member 55 similar to a sieve may break up the lead stream before it enters the press, and is heated by a coil 56. Heating and cooling means 61, 62 are provided on the press. The invention is applicable to the press described in Specification 386,937.
Patent GB-797823-A (GB)
Title: Circuit arrangement to produce a modulated and an unmodulated carrier both of the same frequency and of phase relations independent of the transmitter circuit
IPC: H03C1/52
Filed: 1956-02-22
Abstract: 797,823. Amplitude-modulating systems. STANDARD TELEPHONES & CABLES, Ltd. (Lorenz Akt.-Ges., C.). Feb. 22, 1956,.No. 5480/56. Class 40 (5). In a carrier modulator comprising a parallelmodulated unbalanced push-pull carrier amplifier Ro1-Ro2 the cathode of Ro1 is kept more negative than Ro2 by a voltage #Uo giving different non-cancelling carrier voltages and a resultant residual carrier voltage at load resistor R2 and an additive carrier voltage at resistor R 1. The sideband components cancel at R2 and add at R1. Thus an unmodulated output is derived across load resistor R2 and a modulated output is derived across load resistor R1 whose mutual phase relationships are independent of the tuned circuit adjustments. In a second embodiment, Fig. 2 (not shown), the carrier voltage amplitudes are made equal by omitting voltage #Uo and the modulating voltage amplitudes are made unequal by means of an unbalanced modulation transformer.
Patent GB-417048-A (GB)
Title: Improvements in or relating to portable stands or carriers for gardening implements or accessories
IPC: A47B61/00
Filed: 1933-02-23
Abstract: 417,048. Stands or carriers for gardening - appliances. WARDROPER, L. D., Woodsome, High Park Road, Ryde, Isle-of-Wight. Feb. 23, 1933, No. 5508. [Class 52 (v).] A stand or carrier for gardening implements or accessories consists of a base or tray A with an upright B to which is attached one or more unadjustable arms C, C <1>. The arm C is furnished with slots c and apertures c<1> for the reception of pruning-knives, scissors &c. Hooks or loops b and a handle D may be also provided.
Patent GB-216571-A (GB)
Title: Improvements in governors for talking machines
IPC: G11B17/02
Filed: 1923-02-27
Abstract: 216,571. Gramophone Co., Ltd., and Buckle, H. L. T. Feb. 27, 1923. Speed, regulating. - Relates to centrifugal governors for sound - reproducing machines, particularly those of the kind in which a disc record is caused to rotate at a continuously varying speed. According to the invention, in a governor of the type comprising a rotating spindle 1 on which are mounted a fixed collar 6 and a slidable collar 5 attached to a friction disc 7, the collars being connected by weight-carrying members and normally held apart by a spring 11, the connecting-members are each formed of two unequal parts 8, 9, the longer part 8 being attached to the sliding collar 5 and the shorter part 9 to the fixed collar 6. The parts 8 are preferably in the form of leaf springs, and the distance of the weights 10 from the fixed collar is preferably one half to one third of the distance from the sliding collar. Specification 233,741 is referred to.
Patent GB-540050-A (GB)
Title: Improvements in or relating to manufacture of nitric acid esters
IPC: C07C201/02
Filed: 1940-03-29
Abstract: 540,050. Alkyl nitrates. STEVENS, A. H. (Sharples Solvents Corporation). March 29, 1940, No. 5722. Drawings to Specification. [Class 2 (iii)] Alkyl nitrates are produced by reacting in alcohol with nitric acid of 35-68 per cent. strength under a pressure of 20-650 mm., the nitrate being removed by azeotropicdistillation, water (or in the case of ethyl or methyl nitrate, the ester) being returned from the distillate or otherwise to the reaction vessel to prevent accumulation of ester or water. The invention is applicable to the esterification of dihydric alcohols. Urea is preferably added during the process, and the water to be returned may be added in the form of solvent or diluent of the nitric acid, urea or alcohol. Examples 1-11 describe the esterification of n-butyl, 2-chlorethyl, mixed amyl, secondary amyl, iso-amyl, n-amyl, n-hexyl, secondary hexyl, 2-ethoxyethyl, cyclohexyl, and octyl nitrates, using the reagents in the liquid phase. The alcohol may be supplied in the liquid or vapour phase. Another example describes the production of isopropyl nitrate, the alcohol being supplied in the form of vapour above the surface of the nitric acid. Specification 379,312 is referred to.
Patent GB-582195-A (GB)
Title: Improvements in or relating to circuit arrangements for indicating the duration of electrical pulses
IPC: H04N5/10
Filed: 1944-03-28
Abstract: 582,195. Pulse modulation. WHITE, E. L. C. March 28, 1944, No. 5738. [Class 40 (v)] [Also in Group XXXVI] A circuit arrangement for measuring or indicating the duration of electric pulses, particularly for de-modulating a train of duration-modulated pulses, comprises an integrating circuit normally inoperative, but rendered operative, for the duration of a received pulse, and a rectifier associated therewith to develop an output voltage proportional to said duration. In Fig. 1 the integrating circuit, comprising resistance 1 and condenser 2 is normally inoperative, the condenser being maintained discharged by the normally-conducting valve 3. The received pulse is applied in the negative sense to the grid of the valve thus blocking the valve and permitting the condenser 2 to charge to a peak voltage proportional to the pulse duration, and to discharge at the endof the pulse. The condenser 2 is shunted by a rectifier 6 in series with a condenser 7, the latter being shunted by a resistance 8. The time constant of the combination 7, 8 is large compared with the interval between successive pulses, so that the voltage across the condenser 7 represents the peak voltage across condenser 2. The output is applied to the grid of a cathode-follower valve 10, and the final output taken across the cathode resistance 9. In a modified circuit, Fig. 3, designed to overcome the non-linear rise of voltage on condenser 2, a condenser 15 is connected on one side to the grid 12 and through a resistance 14 to HT+, and on the other side to the junction of resistances 16, 19. Resistance 16 is connected at its other end to the valve anode, and through a resistance 17 to HT+. Resistance 19 has its other end connected to a bias source 20, from which bias is supplied to the suppressor grid 21 from a potential-divider 24, thus rendering the valve non-conducting. The cathode is earthed, and the input pulse is applied to the grid 21 in the sense to make the valve conductive. Voltage proportional to pulse duration is developed at the junction 16, 19 and is applied as in Fig. 1 to rectifier 25 and condenser-resistance combination 26, 27. A cathode-follower output stage may be used, both as shown in Fig. 3, the voltage across condenser 27 is applied to the grid of a pentode 28 and the output taken from its anode. This anode is connected to the grid by a condenser 32 and to the junction 16, 19 by a rectifier 31.
Patent GB-490856-A (GB)
Title: Improvements in or relating to fastener inserting machines
IPC: A43D69/04
Filed: 1937-02-26
Abstract: 490,856. Nailing. BRITISH UNITED SHOE MACHINERY CO., Ltd., and ELLIOTT, H. E. Feb. 26, 1937, No. 5763. [Class 89 (iii)] The awl of a slugging-machine is so operated, by a parallel linkage, that it occupies, during its feeding movements in the work, positions parallel to the position it occupies at the commencement of its feeding stroke. The awl 3 is fixed to a block 21 which is adjustable forwardly and rearwardly on a slide 23. The latter is reciprocated vertically, in a carrier 29, by means of a pivoted link 33 and a cam lever 37, 41. The carrier is supported pivotally by - two similar links 51, 53 which are pivoted in the machine frame. The link 53 is rocked, to impart the feeding stroke to the awl, by links 69, 73 and a cam lever 75, 77. The links 69, 73 are connected by a floating pivot 71 the initial position of which can be adjusted, to vary the feed stroke, by means of a lever 85, 89 provided with a stud 91 adjustable in a slot 93. The operating cams 47, 81 and the driver bar 105 of the machine are shielded by a removable cover plate 99 which has, in its inner surface, a guide groove 103 for the driver bar. The cover plate is cut away in front of the driver 1 and shearing mechanism 5, and provided, at this point, with a hinged door which carries a slugstop 12. Specifications 342,502 and 415,402 are referred to.
Patent GB-1033502-A (GB)
Title: Mixed flow blowers
IPC: F04D29/54
Filed: 1963-02-13
Abstract: 1,033,502. Mixed-flow blowers. GENERAL DYNAMICS CORPORATION. Feb. 13, 1963 [Feb. 15, 1962], No. 5831/63. Heading F1C. In the blower shown, the outer casing 10 is cylindrical but the impeller hub 14 increases in diameter in a downstream direction. Where the impeller blades 16 are each divided into two overlapping portions with a slot 24 between them, as described in Specification 872,228, the ratio between the relative velocity of flow at the trailing edge of the blade to that at the leading edge is between 0À65 and 1À1 at the hub, between 0À45 and 0À85 at the tip and has a mean value between 0À55 and 0À95. Where the blades 16 are of non-slotted form, these limits are 0À8 and 1À1, 0À60 and 0À85, and 0À7 and 0À95 respectively. The ratio of hub diameter to tip diameter at the trailing edge may be greater than 0À60. Non-slotted blades 16 may be of aerofoil or laminar form. Guide vanes 20 may be of slotted or laminar form and the inner casing 18 may be tapered to provide an increasing flow area in the downstream direction. The blades 16 and vanes 20 may be of substantially constant camber and chord and substantially without twist, and may operate with free vortex or forced vortex flow. The invention is also applicable to stator blading.
Patent GB-972129-A (GB)
Title: Improvements in and relating to tubular steam condensers
Inventor: SACHS PETER
IPC: F28F17/00
Filed: 1960-02-19
Abstract: 972,129. Surface condensers. ENGLISH ELECTRIC CO. Ltd. Feb. 17, 1961 [Feb. 19, 1960], No. 5924/60. Heading F4S. In a tubular steam condenser dropwise condensation is promoted by coating the tubes with a thin, i.e. about 0.0002 inch, layer of polytetrafluorethylene. In the condenser shown in Fig. 1 the coated tubes are arranged in nests 7, 8 which are inclined and cross one another diagonally in an octagonal casing 1. Steam enters at 5 whilst condensate and air discharge through outlets 6, 10 respectively. Cooling water enters at 3 and flows successively through a chamber 11, the tubes of the nest 7, a downflow chamber in the right hand portion of the jacket 2, the tubes of the nest 8 and a chamber 12 which, it leaves through an outlet 4. The condenser is adapted to be mounted below the low-pressure end of a turbine. The condenser shown in Fig. 2 is mounted on the same level as the turbine and connected directly to its low-pressure exhaust end 25. The casing 21 contains vertical banks 27, 28 of coated tubes, preferably made of aluminium. Condensate and air discharge through outlets 26, 20 respectively.
Patent GB-492958-A (GB)
Title: Improvements in driving and stop motion mechanism for the spindles of spinning, doubling, twisting and winding machines
IPC: D01H1/241
Filed: 1937-03-30
Abstract: 492,958. Spindle driving and stop apparatus for spinning &c. machines. WALTON, N., and DAVY, J. March 30, 1937, No. 5984/36. [Class 120 (ii)] In spinning, doubling, twisting, and winding machines wherein a tape drives four spindles, two on each side of the machine, the tension pulley 39 of the driving-band is adapted to slide vertically on a guide rod 37 to give adequate compensation when pulleys 16a are operated to deflect the tape from one or more of the spindle wharls. The spindles are driven from pulleys 30, the tapes passing over guide pulleys on brackets 34 carried by a longitudinal rail. The pulleys 16a are mounted on levers 16 adjacent each spindle, an arm 15a of the levers being operated upon release of stop-mechanism. A latch lever 8 carries a bowl 14 adapted to operate the lever 16, and is unshipped from a bar 9 to permit operation by the spring 10 and lever system 12, 13, by means of broken-end and measuring stop - mechanism. The brokenend mechanism comprises a wedge 5 on a detector 2 adapted to be inserted between a rotary cam 6 and a finger 8a on the latch lever 8 ; the measuring mechanism comprises a rod 27, 27a adapted to lift the latch lever 8 and operated by the thread guide bracket 26. The lever 13 actuates the bracket 22 which carries the traverse mechanism to remove the driving-wheels from the actuating gears on the shafts 4, 7, and to apply a brake 21 to the spindle wharl, as described in Specification 443,555.
Patent GB-1509823-A (GB)
Title: Liquid crystal imaging of radiograms
IPC: G03G15/054
Filed: 1976-02-16
Abstract: 1509823 Controlling light XONICS Inc 16 Feb 1976 06020/76 Heading G2F [Also in Division H1] A device which provides an optical output corresponding to an incident x-ray image includes a chamber 17 having an upper wall electrode 15 and filled with an x-ray absorbing, electrically insulating, liquid having atoms of an atomic number of at least 17, the charge image resulting from ionization of the liquid being transferred through a matrix of pins 16 in a glass plate which forms the lower wall of the chamber, to modulate a liquid crystal 20 contained between the glass plate and a transparent electrode 19. The liquid crystal material may be of either dynamic scattering or of field effect type. In the former case, the polarity of the potential difference across the chamber 17 is preferably reversed between successive exposures, giving alternate electron and positive ion images at the matrix, in order to increase the useful life of the liquid crystal. To improve the optical image, in the former case the lower ends of the metal pins 16 may be polished to enhance their reflectivity, and in the latter case the insulating layer which it is necessary to interpose between the pin matrix and the liquid crystal material may be in the form of a dielectric mirror; a lamp 34 may also be directed at the window. Reference is made to the use of a storage liquid crystal material, to permit preservation of an image until erased by the application of A.C. The pin matrix glass plate may be x-ray absorbing, to constitute an x-ray shield for the liquid crystal material.
Patent GB-100368-A (GB)
IPC: F02M19/00
Filed: 1916-04-27
Abstract: 100,368. Soc. du Carburateur Zenith. Dec. 4, 1913, [Convention date]. Valve members and faces. - In carburettors having butterfly valves for controlling the mixture it is found that, with the valve slightly open, a noise is produced by the rush of gas past the edge and chiefly the upper edge of the valve, and the invention consists in preventing this noise by admitting air to the space a, b, Fig. 1, between the upper edge h and the wall of the induction pipe. To effect this, air passages C are formed in the valve from the lower edge g, to the upper edge h, as shown in Fig. 1, or oblique passages d are formed, as shown in Fig. 4.
Patent GB-880100-A (GB)
Title: Improvements in or relating to silencers for internal combustion engines
IPC: F01N1/08
Filed: 1958-02-25
Abstract: 880,100. Exhaust silencers. ABBUHL, F. Feb. 25, 1958 [Feb. 10, 1958], No. 6098/58. Class 7(2). A silencer for I.C. engines comprises a number of continuous, separate, annular ducts 3 arranged in a number of juxtaposed similar groups, the ducts in each group being of different lengths, all the ducts in a first group being connected to an inlet 24 and all the ducts in a last group being connected to an outlet 27, the ducts of similar length in adjacent groups being interconnected by apertures 20. As shown, a number of corrugated sheet metal discs 1 are assembled on a tubular member 2, and enclosed by cover discs 5, 6 held together by clamps 9.
Patent GB-459985-A (GB)
Title: Improvements in or relating to a method and apparatus for coating pipes and the like
IPC: F16L58/12
Filed: 1936-02-29
Abstract: 459,985. Coating pipes &c. by extrusion machines. JACKSON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London.-(Standard Oil Company of California; 100, West 10th Street, San Francisco, U.S.A.) Feb. 29, 1936, No. 6197. [Class 87 (ii)] Pipes or the like are coated with a bituminous mastic by wrapping the mastic helically about the pipe and constricting the wrapped layer uniformly about the entire circumference of the pipe as by passing through an extrusion nozzle. A pipe 1 is rotated and moved longitudinally through a nozzle 14 and mastic is supplied from a hopper 12 down a shoot 19 to the pipe. Rollers 2 are provided to support and feed the pipe and are mounted in brackets 8 carried on rotatable bearings 7. The brackets 8 may be fixed in an adjusted position by a bolt 11 engaging in an arcuate slot 10 in a plate 9 so that rollers 2 are inclined to the pipe which is thus fed longitudinally as it rotates. The nozzle 14 comprises a central bore 16 which tapers from the entrance 17 to the outlet 18. The shoot 19 extends tangentially into the bore 16, a portion of the nozzle being open at the side. A vertical side wall 20 guides the mastic in the shoot. A layer of mastic is thus wrapped round the pipe as it rotates and advances past the shoot 19. The wrapped layer is constricted by the tapered nozzle which becomes parallel to the pipe at its outlet end 40. The nozzle 14 is attached to a framework 22 and is maintained in a floating position about the pipe by rollers 26 mounted on rings 23, 24 forming part of the framework 22. The rollers 26 are mounted in brackets rotatably mounted on the rings so that the inclination of the rollers to the pipe can be adjusted. The weight of the nozzle 14 and framework 22 is taken by a cable 37 attached to a counterweight. The longitudinal feed of the pipe for each rotation may be adjusted to a distance less than the width of the shoot so as to prevent gaps in the coating. Rotation of the nozzle with the pipe may be prevented by a bar on the framework 22 engaging a fixed support or by a cable attached to the framework. Longitudinal drag may be overcome by links 44 attached to a support 47. The coated pipe may be washed with lime or whitewash. For coating materials which harden quickly, the nozzle 14 may be provided with an insulating jacket 48 and a heating coil 49 to prevent sticking. The mastic may be fed along the shoot under pressure. In one form, Fig. 10, it is fed from a hopper 77 by a worm 78 to a closed hopper 75 from which it is delivered tangentially to the pipe in the nozzle 14. In another form, Fig. 9, it is forced along the shoot by a reciprocating plunger or tamper 50 on a lever 51 pivoted to a bracket 53 mounted on a wheeled carriage 54 whose position is adjusted as the pipe moves by a lever system 58.. 61. The lever 51 is reciprocated by a crank 69 operated through gearing from a motor 65. Energy is stored during the upstroke of the plunger 50 by a spring 72 and a flywheel 73. Specification 354,803 is referred to.
Patent GB-932911-A (GB)
Title: Automatic pressure pouring control mechanism
Inventor: HURSEN HORACE HALE
IPC: B22D18/08
Filed: 1960-02-22
Abstract: 932,911. Casting-machines. GRIFFIN WHEEL CO. Feb. 22, 1960, No. 6202/60. Class 83 (1). In pressure casting molten metal is forced into the mould from a container by pressure fluid delivered to the container through a valve which is automatically continuously adjusted to provide a predetermined constant rate of pressure increase in the container and a uniform rate of flow of metal into the mould cavity, while means responsive to the pressure in the container actuate the adjusting means to compensate for deviations from the predetermined rate. The chamber 26 is pressurized through a pipe 12 to force the molten metal 16 into the mould 34. The pipe is controlled by a valve 66 which is regulated automatically by a pneumatic valve control mechanism 100 driven by an electric motor and clutch arrangement 101. The control mechanism 100 is of a known type wherein the desired pneumatic pressure is set by a normally manually operated gear 122. Unpredictable variables such as leaks, temperature changes &c. cause the pressure in the chamber to differ from the pressure called for by the particular setting of the gear 22, and a pressure-sensing device 118, responsive to the actual pressure in the chamber 26, controls the mechanism 100 to compensate for pressure deviations. In order to force the metal into the mould at a controlled uniform rate of flow it is necessary that the pressure increases at a constant rate and the motor and clutch arrangement drives the gear 122 at a predetermined rate to increase at a constant rate the pressure condition called for by the gear. The gate stopper 54 is electrically conductive and connected in the electrical control circuit as an electrode so that the initial filling rate is high until the melt contacts the stopper. One of a series of resistance for insertion in the motor circuit is selected to give the predetermined rate of pressure increase appropriate to the particular casting operation. Specification 465,530 is referred to. Reference has been directed by the Comptroller to Specification 718,744.
Patent GB-128881-A (GB)
Title: Rack or File.
Inventor: ROSS HERBERT OESTERLE
IPC: B42F17/08
Filed: 1919-03-12
Abstract: 128,881. Ross, H. O. March 12, 1919. Racks.-An extensible rack or file for letters- &c. comprises end sections A, A<1>, Fig. 1, and intermediate sections C consisting of upright walls and connected floor members B, B', the latter fitting together in pairs telescopically and having end extensions forming pockets to receive index cards. The floor members B, B<1> are preferably formed from a single blank, as shown in Fig. 4, for a member B. The blank is bent along the line v to form an angular body having a floor 3 and a leg 1 to be riveted or otherwise secured to the upright wall of the section. The floor 3 is bent at each end along a line w to provide end extensions 4, which are curled upwardly along a line x to provide an index-card seat or channel 5. A portion 6 is cut along a line y and curled inwardly along a line z to form a vertical end of the index-card pocket. The member B<1> has corresponding parts 1', 3<1>, 4<1>, 5<1>. 6<1>. The members B, B<1> are adjustably secured together near each end by means of bolts 9 projecting through apertures in the lower member B and through elongated slots in the upper member B'. Anglemembers 11 are attached to the end sections A,. A<1>.