baber/WOPTO huggingface dataset:
Patent GB-1309803-A (GB)
Title: Control means for fluid-operated drive members
IPC: F15B9/14
Filed: 1970-06-03
Abstract: 1309803 Fluid pressure actuator control circuit J CLOUP 3 June 1970 [5 June 1969] 26896/70 Heading F1P The variable distance through which a rack 7, Fig. 1, suitable for moving a worktable (not shown) and driven by a pinion 6 on the shaft 21 of a fluid operated motor 1 in circuit with a distributing valve 38, 39 is related to the number of complete turns plus a fractional turn of a coarse thread screw 10 having one end keyed at 15a to a slotted shaft 18 coupled to motor shaft 21 and having its other end free to rotate relative to a first control member 8 which together with screw 10 is linearly displaced in direction A by digital means (not shown) a distance corresponding to the desired fractional turn of shafts 18, 21 and member 8 and screw 10 is linearly displaced by a distance corresponding to more than one rotation of shafts 18, 21 by linear displacement by digital means (not shown) of a second control member 85 and a rack and pinion 69, 71. Control member 85 carries a tubular member 87 tight with a non-rotational nut 88 through which passes a screw 91 to which is fixed a pinion 95 meshing with a pinion 99 on shaft 18. The screw 10 has slidably mounted thereon a sensor sleeve 24 having an integral tubular member 27 mounted to slide through a slot 28 in a plate 29 and enclosing a ball end 31 of a rod 32 articulated at 37 to a plate 36 by which valve positions 38, 39 are connected together. The sleeve 24 has diametrically opposed slots 25, 25a Fig.2 connected in parallel with opposite end chambers 51, 51a of valve 38, 39 by means of conduits 54, 55 supplied from a common pressure line 68. The conduits 54, 55 are exhausted to 64 through a spring- biased valve 58 when the latter is displaced to the right by screw 91. In operation and assuming a fractional rotation of shafts 18, 21 to be required a linear movement of screw 10 imported thereto by member 8 uncovers slot 25a so as to connect line 55 to exhaust. Pressure in line 54 then moves valve 38, 39 to the right and they in turn move the sensor sleeve until slot 25a is again closed resulting in valve 38, 39 to be returned to the neutral position. When the desired linear movement of rack 7 necessitates more than one complete turn of screw 10 linear movement imported by control member 85 is transmitted through pinion 71 and rack 69 to member 8 and hence screw 10 and linear movement of member 85 is also transmitted by a sleeve 87 screw 91 and push member 93 to valve spool 59 which is then moved so as to connect line 55 to exhaust and thereby position valve 38, 39 so as to feed and exhaust motor 1. Shafts 18, 21 and hence screw 91 are then rotated and after the desired number of complete turns screw 91 has moved linearly in direction E sufficiently to allow valve spool 59 to return to the position shown and after the remaining fractional turn of screw 10 is completed slots 25, 25a are blocked resulting in valve 38, 39 to be centred and motor 1 stopped.
Patent GB-362010-A (GB)
Title: Improvements in screw tapping attachments
IPC: B23G1/46
Filed: 1930-09-09
Abstract: 362,010. Attachments for tapping. PROCUNIER, H. G., 14, South Clinton Street, Chicago, U.S.A. Sept. 9, 1930, No. 26929. [Class 83 (iii).] A tapping attachment for a drilling &c. machine comprises a casing 10 held stationary by a bar 11 and having rotatably mounted therein a driving shaft 16 carrying a friction bowl 14 and a chuck shaft 17 carrying a double friction cone 19, an inverted friction cup 23 being reversely rotated through gearing from the shaft 16 and the cone 19 being engageable with either the bowl or the cup according to the direction of end pressure on the chuck shaft. A fibre ring 23a prevents contact of the cup 23 with the bowl 14. The cone 19 is connected to the shaft 17 by a pin 20 which is insertable through a hole 21 and is secured by a transverse pin 22. The lower edge of the bowl 14 has internal teeth 28 which drive a gear 15 on the cup 23 through three idle gears 26 rotatable on screws 27 secured to the casing and the bowl completely encloses the friction surfaces so as to protect them from oil which is supplied to the bearings of the shaft 16 at 29. A pair of annular flanges 30, 31 at the base of the cup 23 assist in throwing off oil by centrifugal action and holes 32 in the bowl allow the oil to escape outside the bowl. The shaft 17 has an end bearing in a recess 18 in the shaft 16 which is lubricated by a felt pad in the recess accessible through a plug hole 18a. Ball thrust bearings are provided at 25a, 25b, the former being lubricated by oil which drains to the bottom of the casing and is received by a felt pad 25c. A hardened steel plate 25 embraces each of the screws 27 and forms part of the ball bearing 25a. The cup 23 is secured to the gear 15 by pins 24, and the attachment may be used horizontally instead of vertically as shown.
Patent GB-444113-A (GB)
Title: Improvements in and relating to electric welding apparatus
IPC: B23K11/24
Filed: 1934-09-19
Abstract: 444,113. Supply systems for resistance welding. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 19, 1934, No. 26933. Convention date, Sept. 19, 1933. [Class 38 (iv)] Switching control.-In resistance - welding apparatus in which the current supplied to the welding electrodes passes through grid-controlled discharge tubes and the grid voltage is changed so as to render the tubes conductive during an interval dependent upon a time element con. sisting of a, condenser and a resistance, the switch controlling the time element is coupled to the mechanism operating the welding electrodes. The welding electrodes E, Fig. 1, are supplied with A.C. from a source W1 through a transformer T3 and reversed discharge tubes F1, F2 having incandescent cathodes K1, K2, whenever the voltage in the grids G1, G2 is suitable. The grid voltage is changed during the desired interval of time by A.C. from a source W2 supplied from the same network as the source W1. Before welding is commenced, the switches S1, S2 are in the positions shown and the condensers are then charged from the source W1 through a transformer and rectifiers V co-operating with condensers C1, C2 and potential dividers P1, P2. When the electrodes F approach one another, the switches S1, S2 are changed over and each condenser is connected to its grid G1, G2, the voltage of which is thus changed during an interval of time which depends upon the rate of discharge through variable resistances W1, W2. In a modification, Fig. 2, the discharge tubes are operative when the grids receive, through the transformer T2, a positive voltage, the phaso of which is displaced slowly backwards until, at the end of the predetermined interval, the welding current ceases. The primary of the transformer T2 is connected to a circuit which includes the resistance W, the auto-transformer T1 and the secondary of a transformer T supplied with current from a source W2 in phase with the source W1. Before welding commences, the switch S is in the position shown and the condenser C is short-circuited. When the electrodes E are brought together, the switch S is changed over so that the condenser C is charged through the rectifiers G and the adjustable resistance WZ. The autotransformer T1 is thus loaded so that its impedance is small as compared with the resistance W, and the phase of the positive grid voltage is displaced backwards during an interval dependent upon the rate at which the condenser C is charged through the adjustable resistance W2 which thus determines the number of welding half waves. Reference has been directed by the Comptroller to Specification 420,100.
Patent GB-319921-A (GB)
Title: Improvements in gramophone and like sound boxes
IPC: H04R1/38
Filed: 1928-09-21
Abstract: 319,921. Parker, T. H. Sept. 21, 1928. Sound-boxes. - A sound-box for gramophones &c. is provided with a sound-baffling device in the form of a main disc 5 and a superimposed disc 6 inserted between the diaphragm 1 and the back 4 of the sound-box, such superimposed disc 6 being provided with one or more spiral grooves 7 and having a central tubular extension 8 communicating through an aperture in the main disc 5 with the tone-arm. The diaphragm 1 and the discs 5, 6 may be resiliently mounted, as at 2, by means of split rubber rings. If desired, the disc 6 may be of dish shape and mounted in the same rubber ring as the diaphragm 1. A series of spirally grooved discs 6 may be mounted on the main disc 5 in such manner that their tubular outlets nest one within another.
Patent GB-260769-A (GB)
Title: Improvements in runners for curtain rails
IPC: A47H15/02
Filed: 1925-10-29
Abstract: 260,769. French, G. F. Oct. 29, 1925. Curtains, suspending. - In a curtain runner of the kind comprising a U-shaped frame a with inturned ends a<1> carrying rollers engaging an inverted T &c. rail, the ends a<1> are inclined upwards so that the rollers b, which are each of disc formation with an elongated hub portion, travel in the angles between the rail web and flanges. The ends a<1> may be riveted over. The rollers b may be conical. A suspension loop d bent to form a pair of eyes 2 to engage the frame a may be provided. The rollers may be made of metal, fibre or rubber, and the wire of the frame may be flattened except at the parts a<1>.
Patent GB-1437362-A (GB)
Title: Electrodes
IPC: C25B11/04
Filed: 1973-06-07
Abstract: 1437362 Silicon PPG INDUSTRIES Inc 7 June 1973 [8 June 1972 27 Feb 1973] 27160/73 Heading C1A [Also in Division C7] Silicon having an electroconductivity of at least 10<SP>2</SP> (#.cm.)<SP>-1</SP> is made by fusing Si with one of the following fluxes whereby one or more electron donor and/or acceptor atoms are incorporated such as B, P and Co. The Si is useful as a substrate in electrodes for electrolysis. The fluxes are; Na 2 B 4 O 7  optionally with Na 2 HPO 4 , NaOH, Mo, Co or W; Na 2 HPO 4 ; Na 2 WO 4  optionally with BiO 3 ; LaAlO 2  with Al 2 O 3  or B 2 O 3 ; Cr 2 O 3  with B 2 O 3 ; AlPO 3  with Na 2 B 4 O 7  and V 2 O 5 ; and soda lime glass optionally with Na 5 B 4 O 7 .
Patent GB-616732-A (GB)
Title: Improvements relating to means for feeding batter to moulds in machines for making cones or biscuits for containing ice cream
IPC: A21B5/02
Filed: 1946-09-10
Abstract: 616,732. Delivering measured quantities of batter. MARSHALL, E. L. Sept. 10, 1946, No. 27187. [Class 106(v)] [Also in Group V] Apparatus for measuring batter into moulds for ice cream cones or biscuits comprises a barrel provided with pockets 2 adapted to be charged with batter from a feed chamber 5, pivoted plummets 10 being adapted to drop into the pockets by gravity to displace excess batter and being forced out of the pockets by engagement with the barrel as it is intermittently rotated between the filling operations. The batter from the pockets is discharged to the moulds by holes 6. In order to adjust the plummets to penetrate the pockets to the desired extent to regulate the amount of batter, the pivot 11 of each plummet is mounted on an adjustable screw spindle 13. These spindle's may be adjusted simultaneously by a worm shaft or a rack or the plummets may be mounted on a common adjustable shaft. The barrel is rotated periodically through 90 degrees by means of fingers pivoted on the end of the barrel and engaging stops on the barrel.
Patent GB-867778-A (GB)
Title: Improvements relating to blocking oscillators
IPC: H03K3/16
Filed: 1957-08-29
Abstract: 867,778. Valve blocking oscillator circuits. TELEFUNKEN G.m.b.H. Aug. 29, 1957 [Aug. 29, 1956], No. 27224/57. Class 40(6) The relaxation frequency of a blocking oscillator is stabilized by tuning a portion of the feedback transformer winding by a circuit connected in parallel with it and comprising the series connection of a capacitor and resistor. The frequency of the tuned circuit is an integral number of times the relaxation frequency and small compared with the frequency of the oscillation which occurs when the blocking oscillator is unblocked. Fig. 1 shows a blocking oscillator in which a sawtooth waveform is generated by charging capacitor 8 from the H.T. voltage U via resistor 9 and periodically discharging it through tube 1 of a blocking oscillator circuit. The repetition frequency of the oscillator may be varied by adjusting the value of resistor 7, the bias voltage U R  or the inductance of transformer 3 and is stabilized by tuning winding 2 with capacitor 4 to a frequency which is preferably double the relaxation frequency of the oscillator. Resistor 5 limits the sinusoidal voltage generated by tuned circuit 2, 5 and prevents the high frequency components of the feedback pulse of the blocking oscillator from being shorted by the tuned circuit. In a modification, Fig. 2 (not shown) the blocking oscillator transformer is an auto-transformer. In a further modification shown in Fig. 3 the auto-transformer 13 provides feedback between cathode and control grid and has its bottom portion, tuned by circuit 4, 5.
Patent GB-862809-A (GB)
Title: Well servicing rig
IPC: E21B15/00
Filed: 1959-08-10
Abstract: 862,809. Well-rigs. BENDER, E. A. Aug. 10, 1959, No. 27229/59. Class 85. In a truck-mounted wellservicing rig, the mast 48 is pivoted at 66 to members 52, 54 pivoted at 58, 60 to the trunk, the top section 46 of the mast pivoting down, as shown in Fig. 2, to reduce the extent of front projection for the truck, and and the whole being raised to working position by lines and pulleys operated by the drawworks 28. The member 54 is telescopic and is fully extended when the mast is stowed. The mast consists of three tubular members 40, 40, 42 braced by crossstays 44, the member 42 being arranged at the back of the mast and serving as a slide-guide for the end 74 of an elevating arm 68 which is pivoted to a rigid structure 62 and is pulled towards the hinge 66 by a line 168. To erect the mast from the Fig. 2 position, a line 98 passing over a pulley 102 to the drawworks 28 pulls on the end of a toggle lever 80, the lever 80 thus becoming aligned with the other toggle lever 82 to swing the top end of the mast into the dotted line position in which it is locked by a detent on the lever 80 engaging a hole in the lever 82. The line 98 is now removed, and the conventional fast line 126 from the drawworks is passed over one of a pair of pulleys 162 to the crown block assembly 116 and from thence to the travelling block 128, the dead line from which returns to the drawworks over a pulley 118 and the other pulley 162. The block 128 is connected by the line 168 which passes over pulleys 160, 158 with the outer end of the arm 68. Operation of the drawworks will now cause the members 52, 54 to be pivoted upwards, the main hinges 66 being raised above the truck body as the members 54 contract. Further operation causes the arm 68 to slide along and raise the mast about the pivots 66, and when the mast is fully, raised the arm 68 is automatically locked to the rear of the mast and acts as a strut. The mast is lowered by reverse operations which may be intiated by an air cylinder 38 in a line 36 connecting the top of the mast with a rest 32 for the stowed mast. The working loads are taken by the structure 62 and jacks 61, and by outrigger legs 140 connected to the hinges 66 and braced by members 144 hingedly connected to the rear of the truck. Additional braces 147 adjustable in length, are connected at 149 to the sides of the truck. Jacks 148 are arranged between supporting pads 150 and the legs 140. A hinged racking platform 130 is supported on brackets 132 and is arranged to deal with a stand of pipe in "doubles".
Patent GB-846771-A (GB)
Title: Improvements in or relating to oscillation generators
Inventor: ADAM ARTHUR MYLNE
IPC: G01P3/486
Filed: 1957-08-29
Abstract: 846,771. Photo-electric pulse generators. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. June 12, 1958 [Aug. 29, 1957], No. 27236/57. Class 40(3). In a sinusoidal pulse generator in which a chopper is arranged between a light source 1 and a photo-cell 8, the chopper comprises a rotary disc 4 with tapered radial apertures 9 and a fixed mask 3 with tapered apertures, and the light from several apertures falls on the photo-cell 8 to increase the output.
Patent GB-390430-A (GB)
Title: Improvements in styli for making sound records
IPC: G11B3/48
Filed: 1932-10-01
Abstract: 390,430. Sound-recording tools. RHEINISCHE NADELFABRIKEN, 19, Reichsweg, and HESSE, W., 41, Kaiser - Friedrich - Allee, both in Aixla-Chapelle, Germany. Oct. 1, 1932, No. 27325. Convention date, Oct. 29, 1931. [Class 40 (ii).] A stylus for cutting sound-record grooves has a lower portion with chisellike cutting edges, which portion is wider at its base than the width of the shank. As shown in side, front and rear elevations by Figs. 6, 7, and 8, respectively, the lower or cutting portion is worked from the shank c and has cutting edges a, b forming an angle of about 90‹. The flat surfaces d, e at the front and rear sides of the stylus are slightly inclined to the axis of the shank c. The shape of the front and rear sides of the stylus may differ according to various described modifications. Thus, the front side may be formed with a hollowed portion formed by two surfaces inclined to each other at an obtuse angle. Or the rear surface may be recessed to the form of a portion of an imaginary cylinder extending either transversely or parallel to the longitudinal axis of the shank. Alternatively, the rear surface may be recessed to the form of a portion of a sphere.
Patent GB-1023499-A (GB)
Title: Process for selective hydrogenation of a cyclic butadiene oligomer
IPC: C07C5/05
Filed: 1963-07-10
Abstract: Cyclic mono-olefins are obtained by the partial hydrogenation of cyclic oligomers of butadiene or its derivatives, e.g. isoprene or piperylene, the hydrogenation being effected in the presence of a nickel sulphide catalyst. The catalyst may have a nickel to sulphur weight ratio of 1.83-7.0 and may be used alone or supported, e.g. on alumina, which may contain silica or have been treated with hydrochloric or sulphuric acid or zinc or aluminium chloride, or on silica, pumice, diatomite, " Vycor " (Registered Trade Mark) glass, activated charcoal or acid-activated clay. Unsupported catalyst is used in concentrations of 0.1-20% and, supported catalyst containing 10-12% nickel in concentrations of 5-60%.  Temperatures of 125-225 DEG  C. with hydrogen pressures of 5.3-140 kg./cm.2 are used preferably with agitation.  A hydrocarbon or ethanol solvent may be used.  Cyclooctene is obtained from cyclooctadiene-1,5 and cyclododecene from cyclododecatriene-1,5,9.ALSO:Conventional nickel sulphide catalysts may have a nickel to sulphur weight ratio of 1,83-7,0.
Patent GB-226175-A (GB)
Title: Improved fin tube for heat exchangers and method of making the same
IPC: B21C37/26
Filed: 1924-11-17
Abstract: 226,175. Griscom-Russell Co., (Assignees of Brown, S.). Dec. 15, 1923, [Convention date]. Metal tubes.-Gilled tubes for beat-exchangers are constructed by winding helically on to a tube 14 a series of gills 12 attached to a single base 13. The strip of metal 10 may be shaped in its passage to the tube by a series of dies. Two or more strips may be wound or. a tube simultaneously either spaced apart or close together. Other forms the gills may take are shown in Figs. 5 and 7, and consist in a three gilled strip the edges 17 of which are turned up, and an interlocking strip formed with a plain gill 21 on one side and a double hook-like gill 22 on the other.
Patent GB-1067378-A (GB)
Title: Manufacture of thioethers in liquid phase
IPC: B01J31/02
Filed: 1964-07-03
Abstract: Thioethers are prepared by condensing hydrogen sulphide with an ethylenically unsaturated hydrocarbon under a pressure which is sufficient to maintain the reaction medium in the liquid state, in the presence of a catalytic system constituted by sulphur and at least one organic compound consisting of a rubber vulcanization agent.  The heating generally takes place at a temperature between 100 DEG  and 200 DEG  C. at a pressure generally between 10 and 300 atmospheres.  A solvent of the thioether which is to be prepared may also be present, a particularly suitable solvent being the thioether itself.  The vulcanization agents which may be used are mercaptobenzthiazoles, dithiocarbamates, thiurams, Schiff's bases, i.e. aldehyde and amine combinations, guanidines, thio-bis-amines, amines, xanthates and thioureas.  In the examples, the preparation of diethyl sulphide from ethylene, of dipropyl sulphide from propylene and of diphenylethyl sulphide from styrene is described.
Patent GB-921766-A (GB)
Title: Improvements in pneumatic tyres
Inventor: JENKINS HERBERT FREDERICK LEON
IPC: B60C15/06
Filed: 1958-08-28
Abstract: 921,766. Pneumatic tyres. DUNLOP RUBBER CO. Ltd. Aug. 20, 1959 [Aug. 28, 1958], No. 27578/58. Class 144 (2). A tyre bead core wire 1 surmounted by a concentric, radially outwardly-extending rubber or polyurethane apex strip 2 is reinforced by a toroidal winding of steel wire 3 looped around the core assembly section to enclose same, the winding having a radially outwardlytapering cross-section. As shown in Fig. 1, the winding may comprise a series of progressive loops 4a forming adjacent convolutions 4 which enclose the assembly with the wire extending obliquely to the circumferential direction and in opposed directions on opposite sides of the core. Two or more layers of such convolutions may be wound with adjacent layers wound in opposite directions. Alternatively the loops of the winding may extend radially of the core as shown in Fig. 3, or in obliquely-directed parallel-sided fashion as shown in Fig. 5. The windings may be effected by a bobbin rotating around the core section in a plane perpendicular to that of the core; and with the core rotating about its axis.
Patent GB-1026803-A (GB)
Title: Improvements relating to liquid filtering apparatus
Inventor: ENGLISH LEONARD WALTER
IPC: B01D29/11
Filed: 1962-08-17
Abstract: Apparatus of the type comprising a plurality of annular filter units has each unit 15, Fig. 1, (not shown), disposed with clearance within an annular baffle 10, the units and baffles being mounted with their axes parallel and spaced apart within a casing 1, the interior of each unit communicating with an outlet port 7 in the casing and the annular space between each unit and its associated baffle communicating through a tube plate 6 with an inlet port 8 in the casing; the apparatus also has a reflux port 9 in the casing and a valve member 23, 25 movable across the surface of the tube plate on the inlet side selectively to connect the annular spaces with the reflux port.
Patent GB-525608-A (GB)
Title: Improvements in or relating to electric discharge tubes for the photo-electric transformation of light
IPC: H01J31/50
Filed: 1939-10-10
Abstract: 525,608. Image intensifiers. MULLARD RADIO VALVE CO., Ltd. Oct. 10, 1939, No. 27622. Convention date, Oct. 13, 1938. [Class 39 (i)] The photo-electric cathode and the fluorescent anode of an image-intensifier are enclosed in a spherical electrode which deflects the cathoderays and focuses them on the anode. The spherical electrode 5 may be formed as a metal lining in the tube 1 which encloses the cathode 2 and anode 3. Windows 10, 11 are provided for admitting light to the cathode and viewing the anode. It is stated that this arrangement permits of considerable reduction of the image, with consequent increase in brightness. This reduction may be carried further by means of an annular electrode 12 at an adjustable potential between those of the anode and cathode, the electrode 5 being at an adjustable negative potential with respect to the cathode. The anode 5 preferable consists of some metal, such as oxidized silver, which will absorb excess of the cµsium employed in sensitizing the cathode.