baber/WOPTO huggingface dataset:
Patent GB-409053-A (GB)
Title: Improvements in the manufacture of absolute alcohol
IPC: C07C29/80
Filed: 1932-11-18
Abstract: In a process for the azeotropic dehydration of alcohol of the kind in which the vapours from the rectification stage are used for heating the dehydration stage, the alcohol is concentrated in the rectification stage to a point substantially below 96 DEG  Gay Lussac at which the quantity of <PICT:0409053/III/1> heat supplied by the alcohol vapours corresponds to the quantity of heat required for the dehydration.  The alcoholic vapours pass from a distillation column a partly through a pipe i into the dehydration column d supplied in the usual manner with entrainer, e.g. benzene, and partly into a heat exchanger c in which they heat the liquid from the column d.  The azeotropic vapours pass off to a condenser e from which condensate is through a pipe 6 passed to a constant level tank f placed alongside a water tank g and the condensate and the water are mixed in constant proportions in a tank h and emulsified by vigorous mixing.  The mixture is pumped to a separator j where the carrier body separates out free from water and alcohol and is returned through pipe 2, 3 to the column d while the dilute alcohol is passed to a purification column l, k through a pipe 4.  The dehydrated alcohol is drawn off through a pipe o.  The lower layer in the separator j which may be cloudy owing to imperfect separation of the carrier may be clarified by submitting it to electrical tension.  Sufficient difference in pressure between the columns d, l, and the column a may be obtained by the reduction in pressure produced by the condensers e, m, or the column a may be maintained under pressure by a compressor.
Patent GB-818050-A (GB)
Title: Improvements in or relating to sheet removal devices
IPC: B65H3/08
Filed: 1957-10-21
Abstract: 818,050. Feeding sheets. SCHNELLPRESSENFABRIK . AKTIENGESELLSCHAFT HEIDELBERG. Oct. 21, 1957 [May 7, 1957], No. 32731/57. Class 100(1) In a pneumatic sheet-separator, the suction mouth of the suction head 1 has slidably fitted thereon a nozzle comprising a support plate 11 having a central hole therein which coincides with the bore 2 in the head, a spacer plate 12 carried by the plate 11 having a long slot therein, and a bottom cover plate 13 secured to the plate 12 provided with a nozzle hole 14 towards one end which registers with the front end of the slot in the plate 12. Thus the nozzle hole 14 communicates with the central bore 2 in the head 1, and is positioned to one side of the head so that sheets 10 can be gripped near one end e.g. near an abutment 8 The plates 11, 12, 13 may be of plastic material, and the plates 12, 13 may be transparent. As shown, the head 1 is rotatably mounted in a housing 5 which is clamped on a suction pipe 6 by a screw 7. The bore 2 normally communicates by a transverse bore 3 with a hole in the pipe 6, but the head 1 can be rotated by means of a knob 4 to isolate the head from the pipe. Several suction heads can be mounted on the suction pipe 6 each provided with a support plate 11, and long plates 12, 13 can be arranged to extend across two or more heads to form sets.
Patent GB-1196458-A (GB)
Title: Electro-Magnetic Spark Ignition Device
Inventor: HALM RICHARD
IPC: F23Q2/28
Filed: 1967-07-17
Abstract: 1,196,458. Reciprocating generators. R. HALM. 17 July, 1967 [16 July, 1966], No. 32733/67. Heading H2A. [Also in Division F4] In a spark ignition device having a magnetic circuit in a core composed of a U-shaped static part 22, 23 incorporating a permanent magnet 21 and an armature 27 displaceable by a lever 26 from a closed circuit rest position to produce by the sudden formation of an air gap an abrupt change in the flux threading in induction winding 29 embracing an arm of the part 23, complementary pole surfaces on the end of the arm and on the armature mutually contact in a plane extending normally to the arm axis, within a recess at one end of the winding, and with a common area of contact greater than the crosssectional area of the arm; moreover, the winding 29 includes both a low- and a high-tension winding whereof the circuit of the former is broken by the lever 26, simultaneously with that of the armature to induce in the H.T. winding a sparkgenerating voltage which is applied to ignition electrodes, as shown, those Pt tipped 11, 12 of a pocket cigarette lighter. The parts 22, 23 are laminated, and the greater area is achieved by making the pole surfaces 30 square whereas the arm 23 is cylindrical. The lever 26 is pivoted on a pin 25 and actuated via a leaf spring 42 by tilting the lighter cap 5 which is pivoted on a pin 6 and has a flame hole 43 above a buner nozzle having a gas valve 16 actuated by a lever 15. The L.T. winding circuit, which includes a capacitor 38, is broken by the lever 26 opening contacts 34, 35.
Patent GB-1586577-A (GB)
Title: Ventilators
IPC: E05F1/10
Filed: 1977-08-05
Abstract: The device has at least one flap which is mounted pivotably over a ventilation opening which is to be closed. This flap can be actuated by a pneumatic-spring arrangement (1) which has a cylinder (10) filled with compressed gas, a piston (15) which is movable in this cylinder (10) and a piston rod (16) connected to the piston (15). In order to tension or release the pneumatic-spring arrangement (1) without subjecting the flap to additional twisting forces, a further piston (5) is provided, which is movable in a further cylinder (2). An inlet (7', 9) for the supply of compressed air opens into the further cylinder (2). The first-mentioned cylinder is connected to the further piston (5) or the further cylinder (2) while the first-mentioned piston (15) is connected to the further cylinder (2) or the further piston, the whole in such a manner that the pneumatic-spring arrangement (1) can, under the action of said compressed air, be extended from a retracted position, in which the flap is closed, into an extended position, in which the flap is open. As a result, there is a greater opening force which remains practically constant over the opening travel. <IMAGE>
Patent GB-1090755-A (GB)
Title: Method of transferring a powder image in an electro-photographic process
Inventor: LAWES LOUIS FREDERICK WILLIAM
IPC: G03G13/16
Filed: 1963-08-20
Abstract: 1,090,755. Printing processes. ARLSIDE Ltd. Aug. 12, 1964 [Aug. 20, 1963], No. 32891/63. Heading B6C. [Also in Division H1] A developed xerographic powder image 3 on a layer 1 of photoconductive material is at least partially transferred to a transfer paper 6 by first charging the image 3 with a wire 4 so that it acquires a charge similar to that retained on the layer 1 and then passing the charged image beneath a soft deformable roller 5. The charge applied to the wire 4 and the pressure at the nip 10 may be varied to control the amount of powder transferred to form the image 8. Multiple copies may be formed from one developed image.
Patent GB-795505-A (GB)
Title: Accounting machines
IPC: B07C7/04
Filed: 1956-10-29
Abstract: 795,505. Accounting-machines. NATIONAL CASH REGISTER CO. Oct. 29, 1956 [Nov. 15, 1955], No. 32906/56. Addition to 771,588. Class 106 (1). [Also in Group XXXVII] An accounting machine has compartments, for receiving cheques or other documents, each associated with a control key, an operating device for each control key, and a member extending across the mouth of each compartment and depressible at any point along its length for' actuation as the cheque is inserted to cause operation of the operating device of the corresponding control key. The whole assembly is similar to that described in the parent Specification but the construction of the switches (see Group XXXVII) which form the manuallyactuated members is different. Moreover, the solenoids 16 which operate the control keys are energized by means of the switches 45 over a circuit having a power supply including a transformer 74, a rectifier bridge 75, across which is connected a condenser 81, and a limiting resistor 79. A main switch 70, when switched off, discharges the condenser 81. A pilot light 71 is provided.
Patent GB-1387465-A (GB)
Title: Honing tool
IPC: B24B33/08
Filed: 1972-07-14
Abstract: 1387465 Honing MASCHINENFABRIK GLUCKAUF GUNTHER KLERNER 14 July 1972 33056/72 Heading B3D A honing tool comprises peripherally-spaced longitudinally-extending honing slips or segments 2 adhesively bonded to the circumferential surface, or to shallow grooves therein, of two non-deformable holders 4 separated by the thrust elements 13, 14 of a mechanical or hydraulic mechanism for adjusting the radial expansion of the holders, and a transverse driving bar 23 engaging holes 29 in the holders and mounted in a mandrel 5 embraced by the holders. As described, five honing slips 2 are adhesively bonded to the circumferential surface or grooves therein of each of the holders which embrace the tubular mandrel 5 detachably fitted to the machine spindle 6, the mandrel and spindle having axial bores for a control rod 7 of the adjusting mechanism. The holders may have a peripheral length embracing 120 to 180 degrees. The adjusting mechanism is disposed in a bore 10 in the mandrel and consists of two units each having complementary semi-cylindrical members 13, 14 formed with inclined faces 15, 16. Each face abuts a respective thrust pin 17, 18 which is semicylindrical along a major part of its length, the flat faces 19, 20 of the pins being in sliding engagement. A central rod 25 and plate 28 interconnects the units so that they operate in unison upon movement of the control rod to expand the holders against the pressure of return springs 22 acting on the thrust pins and springs 12 acting on the holders. The central rod 25 passes through a bore 24 in the transverse driving bar 23 which is located in holes 29, 30 in the mandrel and holders. Positions (31, Fig. 3, not shown) of a measuring gauge may be disposed between adjacent edges of the holders.
Patent GB-1505054-A (GB)
Title: Brush
IPC: A46B3/04
Filed: 1976-08-09
Abstract: 1505054 Brushes NEWARK BRUSH CO 9 Aug 1976 [14 Aug 1975] 33061/76 Heading A4K [Also in Division B5] A brush is formed by supporting tufts 10, Fig. 1, of bristles in a plate 16 so that the tufts 10 depend into a mould 18 with medial bends thereof positioned adjacent the bottom S2 of the mould and with restraining means fixed to the tufts positioned nearer the upper surface of the mould, and casting a body of substantially inflexible high impact resin, having a Shore 'D' hardness greater than 50, around the tufts to form a brush back 22 with a major portion of each tuft extending out of the body and with the restraining means being substantially completely embedded in the body. The restraining means may comprise at least one steel ring (48), Fig. 4 (not shown) or (96), Fig. 9 (not shown) surrounding each tuft 10. In an alternative arrangement, the restraining means comprises an apertured plate 56, Fig. 8, to which steel wire tufts are secured, the plate carrying a driving pin 66 for powered rotary motion. The resin may be a thermosetting polyester resin filled with chopped fibre glass.
Patent GB-1142106-A (GB)
Title: A solder for germanium-silicon alloys
IPC: B22F9/00
Filed: 1967-07-19
Abstract: 1,142,106. Alloys. SIEMENS A. G. July 19, 1967 [July 19, 1966], No.33235/67. Heading C7A. A solder consists of Ge, Si and one of Ti, Zr, Hf, V, Nb, and Ta in a minor proportion relative to the Ge + Si. Examples given are: - (a) Ti 0.17  (Ge x Si 1- x ) 0.83  where 0À4 # x # 0À6 (b) V 0.12  (Ge x Si 1-x ) 0À88 where 0À4 # x # 0À6 (c) Nb 0.12  (Ge x Si 1-x ) 0À88 where 0À4 # x # 0À6 (d) Ta 0.06  (Ge x Si 1-x ) 0À94 where 0À3 # x # 0À6 The solder is made by induction melting the constituents in a rotating tube, and is used to solder Ge-Si semi-conductor limbs to contact bridge in thermo-electric devices.
Patent GB-1117580-A (GB)
Title: Improvements in or relating to control systems for aerial missiles and like vehicles
Inventor: GILDON WALTER JAMES
IPC: F02K9/84
Filed: 1958-10-17
Abstract: 1,117,580. Control by jet reaction. MINISTER OF TECHNOLOGY. 8 Oct., 1959 [17 Oct., 1958], No. 33304/58. Heading B7G. In a short-range missile, guidance is effected by movable jets, in roll, pitch and yaw. The jets are moved by compressed air which is controlled by electrical signals transmitted to the missile by radio link or trailing leads. The propulsive fluid may be supplied to the jets from the main or separate motor. As shown, the Venturi jets 2, which are fed from the main motor, not shown, exhaust into the surrounding deflector tubes 4. The latter are each displaceable about two perpendicular axes by the pneumatic actuators 11, 12. The compressed air supply to 11, 12 is regulated by the electrically operated valve 27. The actator 11 is coupled by the linkage 9, 10 to the tubes 4 which may thereby be displaced simultaneously in the same direction. In addition, the separate actuators 12 may move the tubes 4 simultaneously above the perpendicular axis, either in the same or opposite directions.
Patent GB-520615-A (GB)
Title: Improvements in or relating to vehicle brake systems
IPC: B61H11/06
Filed: 1938-11-16
Abstract: 520,615. Fluid friction brakes. KNORRBREMSE AKT.-GES. Nov. 16, 1938, No: 33320. Convention date, Nov. 20, 1937. [Class 103 (i)] In a vehicle brake system provided with an oil circulating brake, for example, of the kind described in Specification 482,428, and also with a friction brake, the friction brake is automatically rendered operative when the speed falls so that the other brake is insufficiently effective, whereupon both brakes act, and is automatically rendered inoperative when the speed rises, this control being effected by the movement of a piston in a cylinder under the action of the oil circulating brake pressure and the pressure in the air control pipe, whereby the two brakes complement one another to provide a constant collective braking moment when 'the pressure in the air control pipe is kept constant. As shown, the control piston 37 movable in a cylinder 31 is connected with a piston 36 in a cylinder 32 communicating with the circuit of the oil circulating-brake system described in Specification 482,428, and is also connected to a pivoted lever 33, which is connected to a piston 38 in a circuit containing the pistons 35 of the friction brake. The ends of the cylinder 31 are connected respectively to the air control pipe 24 and to a pipe 29 connected through a valve 26 with a pressure reservoir or with the atmosphere. When the vehicle speed is reduced with consequent descent of the member 4 of the oil circulating brake system a part 27 connected with the member 4 operates the valve 26 to connect the pipe 29 with the pressure line 25 whereby the piston 37 is moved against the resistance of the piston 36 and moves the piston 38 to apply the friction brake, whose effect is added to the oil circulating brake and the total braking effect maintained constant so long as the pressure in the control line 24 is kept constant. When the vehicle speed increases the member 4 and part 27 rises and the valve 26 opens the pipe 29 to the atmosphere, whereupon the pressure in the control line 24 moves the piston 37 and thereby the piston 38 to take off the friction brake.
Patent GB-386763-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H9/10
Filed: 1931-12-01
Abstract: 386,763. Switch bases and cases. PRENTICE, H. B., Low Hall Mills, Holbeck, Leeds. Dec. 1, 1931, No. 33347. [Class 38 (v).] In a switch designed to minimize the danger of shocks a panel 11 supporting switch mechanism at the back and fuses at the front is mounted at the front of a casing or other recess and fixed for example by a screw 14 engaging a projection 16 from the back of the casing. The switch shown is a double-pole one having fixed contacts 24 which are engaged by contact arms 23. The contacts 24 also have portions 32 engaged by the blades 35 of the detachable fuse-carrier 34, the blades being inserted through narrow apertures 42 in the panel. Other narrow apertures are provided in the panel for the insertion of a screwdriver when it is desired to tighten up the clamping screws of the contacts without removal of the panel. The Provisional Specification refers to Specification 320,219, [Class 38 (v), Electric switches &c.].
Patent GB-446809-A (GB)
Title: Device for modifying the degree of selectivity and accurate reproduction of a wireless receiving apparatus
IPC: H03H7/01
Filed: 1935-12-03
Abstract: 446,809. Wireless receiving systems. COLE, Ltd., E. K., Priory Crescent, Southendon-Sea. Dec. 3, 1935, No. 33420. Convention date, April 11. [Class 40 (v)] A method of controlling selectivity comprises a variable magnetic coupling between the windings L1, L2 of a high or intermediate frequency transformer, the double-humped characteristic obtained with maximum coupling being obviated by inserting resistances R1, R2, into each tuned circuit as the coupling increases. The arrangement is such that the resistances begin to be inserted at a predetermined point in the variation of coupling. The resistances may be in parallel with the tuning condensers C1, C2 instead of in series, Fig. 4 (not shown). Fig. 5 shows an embodiment of the complete coupling, the coil L2 being rotatable with respect to L1 by mounting in a stirrup 1 which carries wipers 4, 5, engaging the resistances R1, R2. Both coils are preferably of the iron-duct core type. The condensers C1, C2 are of the semi-fixed type in this unit which is designed as an intermediate frequency coupling ; for radio frequency stages ordinary tuning condensers may be used.
Patent GB-614412-A (GB)
Title: Improvements in or relating to tubular containers suitable for use as tyre curing bags and method of making same
IPC: B29C33/76
Filed: 1945-12-12
Abstract: 614,412. Tyre curing bags. FIRESTONE TIRE & RUBBER CO. Dec. 12, 1945. No. 33597. Convention date, Feb. 1. [Class 87 (ii)] A sectional curing bag comprises longitudinal extending strain members disposed substantially parallel to each other and each attached to a ring at, at least, one end of the bag. Fig. 3 shows the strain members in the form of wires 12 embedded in a sheet of rubber 11. This sheet is wrapped around an inflatable inner core member 10, the projecting ends of the sheet are cut into strips 13, Fig. 4, a ring 15 is threaded over the strips (Fig. 5), the strips are folded down on to the member 10 and secured by means which are described in detail. Then a heavy rubber cap 25, Fig. 2, is placed over the end, the body of the bag is covered with a layer 26 of rubber, and a cover 27 is applied over the entire assembly. The usual tube washer 28 and valve nut 29 are applied to the valve stem 14, and the whole is vulcanized.
Patent GB-374783-A (GB)
Title: Improvements in and relating to steam turbines
IPC: F01D3/04
Filed: 1931-12-04
Abstract: 374,783. Steam turbines. AKT.- GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Dec. 4, 1931, No. 33713. Convention date, Dec. 4, 1930. Addition to 368,578. Drawings to Specification. [Class 110 (iii).] In a turbine having end-thrust balancing means as described in the parent Specification the shrouding of some or all of the blading is formed with extensions forming sealing means which open and close in the same sense as the sealing means of the dummy piston.
Patent GB-1487447-A (GB)
Title: Moulding composition
IPC: B22C1/22
Filed: 1975-08-13
Abstract: 1487447 Foundry mould compositions DEUTSCHE TEXACO AG 13 Aug 1975 [20 Aug 1974] 33765/75 Heading C3N A composition suitable for the manufacture of foundry moulds and cores using the cold box method comprises sand and a two-component binder system of an acetone-formaldehyde condensation product and a polyisocyanate, the acetone-formaldehyde condensation product being a polymethylol having a molecular weight of 140-220 that is obtained by condensing acetone and aqueous formaldehyde solution in a mole ratio of acetone : formaldehyde of 1À0 : 1À0 -2À5 in the presence of aqueous alkali, the mole ratio of alkali to acetone being in the range 0À011 :1 to 0À15 : 1, until the reaction mixture is substantially neutral, acidifying the substantially neutral mixture with aqueous acid solution to a pH value of 4 or below, and removing water to a solids content of at least 95% by weight. The alkali is preferably sodium hydroxide whilst the aqueous acid used in the neutralization may be any mineral acid or organic acid. The polyisocyanate is preferably 4,4<SP>1</SP>-diphenylmethane diisocyanate. In the specific examples the sand, polyisocyanate and acetone-formaldehyde solution are mixed and then subsequently cured with atomized triethylamine.
Patent GB-1120816-A (GB)
Title: Process for separation of mixtures of gas and vapour
Inventor: SCHMIDT KLAUS
IPC: F25J3/06
Filed: 1965-08-09
Abstract: 1,120,816. Cold separation of gas mixtures. INSTITUT FUR CHEMIEANLAGEN. 9 Aug., 1965, No. 33942/65. Heading F4P. Separation of a gas-vapour mixture which is defined as a gas mixture containing one or more components, e.g. nitrogen, which have a boiling point higher than the critical temperature of the other components, e.g., hydrogen and helium, is effected by continuously expanding compressed feed mixture within a heat exchanger 3 resulting in partial liquefaction of the mixture, throttle-expanding at 6 the wet mixture leaving the cold end of the exchanger, separating gaseous hydrogen and helium from liquid nitrogen collected in a vessel 5 and passing them reversely through the heat exchanger in separate paths from which they are withdrawn as gaseous products through lines 10, 9. The temperature of the wet mixture leaving the exchanger 3 is below the inversion temperature of hydrogen whereof the Joule-Thomson effect at the throttle 6 is positive. The gas phase withdrawn from separator 5 may be further separated by passage through a second heat exchanger throttle expansion valve and separator the liquid and gas phases from which are returned reversely through both heat exchangers in series.
Patent GB-1142858-A (GB)
Title: Screw anchor devices
Inventor: PERKINS JOHN MERVYN
IPC: F16B13/08
Filed: 1965-08-09
Abstract: 1,142,858. Screw anchors. JOHN M. PERKINS & SMITH Ltd. 26 July, 1966 [9 Aug., 1965], No. 33969/65. Heading F2H. A screw anchor intended to be inserted in a hole comprises an elongated body having a threaded bore 11, a wedge-shaped recess 12, the longer surface of which extends obliquely to the length of the body, a piece 15 shaped to fill the recess, and a rod 14 connected to the piece 15 so that insertion of a screw-threaded member into the bore 11 causes the piece 15 to slide relatively to the body and increase its width. The longer surface of the recess 12 may be concave or convex, and the surface of the piece 15 can be a corresponding shape.
Patent GB-965342-A (GB)
Title: Bag closures
Inventor: RUSSELL JOHN WILLIAMS AUGUST F
IPC: B65D33/26
Filed: 1962-09-05
Abstract: 965,342. Bag closures. BEMIS BRO. BAG CO. Sept. 5, 1962, No. 33996/62. Headings B8C and B8K. Stitching 11 (Fig. 1) through a tape 9 folded about the end of a bag is secured at an extended end 15, from which unravelling takes place, by adhesive, preferably paste, applied on the looper side of the stitching. The two sides of tape are secured by adhesive 45 (Fig. 5) applied away from the stitches. A releasable pull-tab 35 (Fig. 1) is secured to the bag which may be multiply and may have gussets, by heatsealing or adhesive. The stitching which is single thread chain stitching may also pass through a paper ribbon 17.