baber/WOPTO huggingface dataset:
Patent GB-768579-A (GB)
Title: Preparation of improved alumina
IPC: B01J21/04
Filed: 1954-10-18
Abstract: Hard rock-like alumina of high surface area and excellent attrition resistance is prepared by precipitating hydrous alumina from an aluminium salt solution with an excess of a nitrogenous base, maintaining the resultant reaction mixture at a temperature above 150 DEG F. for at least five hours, and washing, drying, and calcining the alumina.  The preferred nitrogenous base is ammonia, but hexamethylene tetramine and urea are also mentioned.  The solution of the aluminium salt, e.g. the chloride, sulphate, or nitrate, is preferably added to the basic solution, the final pH being between 7 and 9.5 or 10.  The heat treatment of the reaction mixture may be effected by refluxing or by immersion of a steam coil.  The alumina may be used as a component of a hydroforming catalyst, other components being incorporated before or after the drying and calcining.  For example the alumina may be dry mixed with molybdic oxide or may be impregnated with a solution of a molybdenum compound which is then precipitated or decomposed by calcination.  A platinum catalyst may be prepared by impregnating the alumina with chloroplatinic acid or platinum chloride solution and heating or treating with hydrogen sulphide.  Other catalytic substances which may be incorporated are chromic oxide and palladium.  Specification 568,978 is referred to.
Patent GB-1047846-A (GB)
Title: Improvements in spiral staircases
IPC: E04F11/032
Filed: 1962-08-03
Abstract: 1,047,846. Staircases. Rt. Hon. R. B. BOYLE, EARL OF SHANNON. Aug. 2, 1963 [Aug. 3, 1962], No. 29970/62. Heading E1V. In a spiral staircase comprising a central pillar 11 to receive tubular sleeves 7 each carrying a stair tread 9, an axially compressive force is applied to the sleeves 7 by tensioning the pillar 11 to hold the sleeves fixed. This force is attained by screw-threading one or both ends of the pillar and clamping the assembly between nuts or a nut 13 and a baseplate 12. Each sleeve 7 has a fin 8 to which the tread 9 is attached. The abutting ends of the sleeves may be made accurately square to their axis, or shouldered and recessed to coact, or have mating angles. Collars may be inserted between sleeves. The sleeve ends may be toothed to engage each other.
Patent GB-884248-A (GB)
Title: Improvements in idlers for belt conveyors
IPC: B65G39/10
Filed: 1957-09-25
Abstract: 884,248. Idler rollers for belt conveyers. LARSSON, J. L. A. Dec. 25, 1957, No. 30034/57. Class 78 (1). An idler roller assembly for supporting a conveyer belt comprises a cradle E of U-section adapted to fit on a stool B on the conveyer framework, the cradle having upstanding pairs of brackets G between which are mounted rollers arranged to trough the belt, each roller consisting of a series of roller elements M1, M2, M3, &c. secured on a common shaft O. The arrangement is such that without stopping the drive to the belt the cradle can be lifted from the stool and placed on the conveyer framework at a lower level 2 where the rollers are clear of the belt. Each roller element has a series of notches around its periphery at each edge such that the rollers can be assembled either with the portions between the notches in contact as in the case of rollers M1, M2 or with the portions between the notches on one roller element engaging within the notches as in the case of rollers M2, M3. In the former case holes are formed in the roller periphery which are said to assist in keeping the belt clean. The shaft O carrying the roller elements is either of hexagonal section or has a key P, the roller elements having corresponding apertures so that they are secured non-rotatably to the shaft. The shaft is journalled in sealed bearings H which are adapted to be received in slots formed in the brackets G.
Patent GB-171399-A (GB)
Title: A process of and apparatus for hermeticalling sealing pressure storage vessels
IPC: F16K1/30
Filed: 1921-11-10
Abstract: 171,399. Schworetzky, G., WerlÚ, N., and Graaff, C. Nov. 11, 1920, [Convention date]. Storing under pressure.-A pressure storage vessel is closed by a member pressed against its seat from within the vessel by increasing the pressure of the medium so that a molecular combination of the pressed portions takes place. The pressure may be applied by heating the vessel. Fig. 1 shows a vessel closed by a ball valve k pressed against its seat by a spring f acting against a funnel or guide t. The seat or the valve may be coated with lead. A conical plug may replace the ball valve. The vessel may be heated by immersion in a 'bath of hot liquid.
Patent GB-408353-A (GB)
Title: Improvements in mounting electric motors and in driving gear therefor
IPC: H02K5/26
Filed: 1932-10-27
Abstract: 408,353. Belt gearing. BROOK MOTORS, Ltd., Empress Works, and BAILEY, J., Lynton Avenue, both in Huddersfield. Oct. 27, 1932, No. 30093. [Class 80 (i).] An electric motor A is pivotally and adjustably attached to a block carrying a countershaft B and sliding on rails. The motor drives the shaft B by a " vee " belt drive, which can be adjusted by moving the motor, and the shaft drives the machinery to be driven by a flat or " vee " belt drive which can be adjusted by shifting the block.
Patent GB-718583-A (GB)
Title: Compound piston and piston rod structure for high and low pressure pneumatic and hydraulic applications
IPC: F16J1/02
Filed: 1952-11-27
Abstract: 718,583. Pistons. BAYON, R., and LAUX, P. Nov. 27, 1952 [June 21, 1952], No. 30097/52. Class 122(1) A compound piston for hydraulic and pneumatic applications comprises a core a and a sleeve d of bronze or the like supported 'on the core between a flange a<SP>1</SP> and the shoulder b<SP>3</SP> of a nut b which engages threads in the bore of the core and retains the piston on a piston-rod c by engaging a shoulder c<SP>1</SP> on the rod. The latter is capable of small lateral and axial movements relatively to the piston which is provided with packing rings f, bearing against the wall of the cylinder, and a ring e between the sleeve d and the core a. Scraper rings g, of rubber, nylon or the like, are located in recesses in the ends of the sleeve d. The nut b may be turned by a key engaging recesses in the nut which is locked by grub-screws b<SP>2</SP>.
Patent GB-1319532-A (GB)
Title: Photoelectrophoretic imaging system
IPC: G03G15/24
Filed: 1970-06-22
Abstract: 1319532 Photoelectrophoretic imaging XEROX CORP 22 June 1970 [25 June 1969] 30098/70 Heading G2H Photoelectrophoretic imaging apparatus comprises injecting and blocking electrodes 1, 2 which are both transparent so that both sides of an imaging suspension 4 between the electrodes can  be exposed. As shown, an optical system 21, 22, 23 projects a right reading image of a transparency 18 through a cylindrical injecting electrode 1, and an optical system 21, 24, 26 projects a wrong reading image of transparency 18 through a cylindrical blocking electrode 2. The image formed from the suspension may be transferred to a receiver sheet. Figs.2, 3 and 4 (not shown) depict on alternative optical arrangement.
Patent GB-1127104-A (GB)
Title: Electrical conductors and alloys for use therein
Inventor: MASON JOHN JEFFERSON
IPC: H01B1/02
Filed: 1966-07-05
Abstract: 1,127,104. Fe-Ni-Mo alloys. INTERNATIONAL NICKEL Ltd. June 20, 1967 [July 5, 1966], No.30181/66. Addition to 1, 034, 765. Heading C7A. Alloys according to the parent Specification are made by powder metallurgy and then sintered until homogenized. In an example, a powder mixture of Fe 58À7%, Ni 32À1%, Mo 9À2% is compacted, pre-sintered in hydrogen at 485‹C. and then sintered at 1200‹ or 1300‹C. The resulting ingots are cold-rolled to strip in stages with intermediate annealing, finally annealed at 930‹C. (general range being 800‹ - 1100‹C.) and then magnetized. The alloys are used as de-icing sheaths around power transmission lines.
Patent GB-223077-A (GB)
Title: Improvements in or relating to casement windows or doors
IPC: E05D15/00
Filed: 1923-11-30
Abstract: 223,077. Cable, J. Nov. 30, 1923. Double and multiple hinges. - A casement window or door is hinged to its frame by means of two pairs of links 9, 10, at the top and bottom, the links 9 and 10 of each pair being pivoted to opposite sides of the window &c. and the longer link 10 being pivoted by a pin 1 and slot 12 to the frame to allow of sliding. The longer link 10 is hinged to the window &c. at a point nearer the edge than the link 9 and is pivoted to the frame at a point just outside the closed window.
Patent GB-690245-A (GB)
Title: Improvements in and relating to electrical heating devices and automatic temperaturecontrol systems therefor
IPC: H05B1/02
Filed: 1950-12-11
Abstract: 690,245. Automatic temperature control systems. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 11, 1950 [Dec. 24, 1949], No. 30238/50. Class 38 (iv). [Also in Groups XI and XXXVII] A thermistor 30 is mounted on a spring- loaded metal plate 24 in the centre of a heating element, so as to respond to the temperature of the cooking utensil. The thermistor controls a thyratron 60 operating a thermal switch 55 (see Group XXXVII) in the supply to the heating element to maintain the cooking utensil at a preset temperature. The thermistor is slightly affected by the inner part of the heating element so that the supply is interrupted just before the utensil reaches the required temperature to allow for overshoot due to heat stored in the heating element. A switch 38, 39, operated by the spring-loaded plate is connected in the control circuit to switch off the heater when the utensil is removed. Control circuit, Fig. 5.-The thermistor 41 is connected in a bridge circuit with a temperature-setting resistor 72, the output being applied to a transformer 73 with its secondary 74 connected in series with the permanent cutoff bias circuit. Assuming a negative temperature characteristic of the thermistor, high resistance is arranged to provide an out-ofbalance voltage causing the thyratron to fire and energize the thermal switch to close the heating circuit, until the thermistor resistance falls to balance point corresponding to the required temperature. Short circuit by spring- plate operated contacts 38, 39, when the utensil is removed provides an out-of-balance voltage assisting the cut-off bias.
Patent GB-189337-A (GB)
Title: Improvements in horse shoes
IPC: A01L1/04
Filed: 1921-11-14
Abstract: 189,337. Cahill, W. J. Nov. 14, 1921. Renewable treads; integral calks.- A horseshoe comprises a channel-member 5 in which is seated a projecting strip of light metal 7, such as aluminium, of less width than the space between the flanges of the channel. The strip 7, which m a y be secured by rivets 8, is formed with abutments 9 and openings 10 aligning with the nail openings in the member 5. The shoe has a toe-clip 6' and a toecalk 6.
Patent GB-535038-A (GB)
Title: Improvements in or relating to differential gearing
Filed: 1939-11-20
Abstract: 535,038. Differential gearing; clutches. BENDIX, Ltd., and IRVING, J. S. Nov. 20, 1939, No. 30370. [Class 80 (ii)] In differential gearing of the controlled type in which the whole of the driving torque may be applied to one wheel axle, a clutch which is adapted to slip when a pre-determined driving torque is exceeded is incorporated in the drive between the differential gearing and the wheel. The clutch may be arranged at the outer end, or at the inner end of each shaft, or at an intermediate point. It may consist of a single or multi-plate spring-loaded friction clutch. As shown, the clutch has radial teeth 16, 19, with inclined side faces, which engage one another and are formed on a cover 13 on the wheel hub 10 and on a disc 18 fixed to the axle 17 respectively. Springs 20 urge the teeth into engagement. Should the torque exceed a predetermined amount the springs give and the teeth slide over one another, the resulting noise being an indication that. slipping is occurring. The springs 20 also bear on a sleeve 23 carrying studs 24 which slide in holes in the disc 18. The sleeve 23 engages a radial shoulder 22 on the wheel hub 10. The slipping of the clutch is also resisted by the friction occurring at the shoulder 22 ; this resistance can be increased by giving the parts 22 a conical form.
Patent GB-1110546-A (GB)
Title: Loop forming apparatus for web handling systems
IPC: B65H23/04
Filed: 1965-07-16
Abstract: 1,110,546. Feeding webs. CANADIAN GENERAL ELECTRIC CO. Ltd. 16 July, 1965 [25 July, 1964], No. 30377/65. Heading B6B. [Also in Division G3] The whole of the subject matter of this Specification is included in Specification 1,110,545 but the claims differ.
Patent GB-790266-A (GB)
Title: Improvements in and relating to switches for sweeping lawns
IPC: E01H1/12
Filed: 1955-10-25
Abstract: 790,266. A switch for sweeping lawns. CONNELL, H. Oct. 1, 1956 [Oct. 25, 1955], No. 30423/55. Class 6(2). [Also in Group XXIII] In a switch for sweeping lawns, the sweeping portion 1 is made of resilient metal tubing or rod, the upper end of which is formed into or fixed to an open spiral or helical coil 2 in the top of which a handle 4 is mounted. The handle, which may be of wood or  metal and either tubular or solid, is forced into or over the upper end of the coil ; its end 3 may be either plain and tapered or threaded to correspond with the convolutions of the coil.
Patent GB-645865-A (GB)
Title: Improved method of concentrating whole, fresh eggs
IPC: A23B5/02
Filed: 1946-10-11
Abstract: 645,865. Concentrating l i q u id e g g s. ZAHM, G. G., and HURD CORPORATION. Oct. 11, 1946, No. 30438. [Class 49] Eggs are concentrated in the liquid phase by breaking and thoroughly mixing whole fresh eggs with a uniform liquid and passing it preferably vertically over a heat exchange surface in an evacuated chamber at a relatively high speed and in a relatively thin continuous film while subjecting it to mechanically applied pressure. It is preferable to employ an apparatus of the type shown having a long evaporator column 1 and a long centrally disposed hollow cylindrical impeller 2 having a plurality of radially projecting vanes 3, which impeller rotates inside and coaxial with a steam-jacketed cylindrical column 4, the inner surface 5 of which acts as a heat exchanger, said impeller 2 having a plurality of apertures 6 opening into its interior 7, the blades 3 of the impeller 2 extending radially outwards and being at their outer extremities deflected rearwardly relative to the direction of rotation of the impeller. The liquid eggs are fed in at the upper end of the hollow cylindrical impeller and flows downwardly under gravity and outwardly through the aperture under the action of centrifugal force into the path of the blades and is spread out in a thin film around the heat exchanger surface. Each element of the liquid follows a downward spiral path, the entire film rotating and slipping downwardly at the same time: The column is heated by external application of steam or other heating media, to a temperature of approximately 120‹F. With a column approximately 15 feet in height concentrate at the bottom will contain substantially in excess of 50 per cent solids. Specification 645,864 is referred to.
Patent GB-155984-A (GB)
Title: Improvements in or relating to the bodies of motor cars and the like
IPC: B60J7/12
Filed: 1919-12-05
Abstract: 155,984. Fuller's United Electric Works, Ltd., and Fuller, L. Dec. 5, 1919. Opening tops.-The body of a motor-car &c. of the enclosed type has one or more openings C cut or formed in the rigid roof, or roof and rear portion, the opening or openings being covered by a flexible cover or blind which is adapted to be wound on a roller or entirely removed so that, when the windows A are lowered, the body is practically of the open touring type.
Patent GB-668661-A (GB)
Title: Temperature control apparatus for electrode type boilers
Inventor: TATEM JOHN ARTHUR
IPC: F24H1/10
Filed: 1949-11-28
Abstract: 668,661. Fluid-pressure servomotor-control systems. G.W.B. ELECTRIC FURNACES, Ltd. Nov. 15, 1950 [Nov. 28, 1949], No. 30489/49. Class 135 [Also in Groups XI and XXXV] In an electrical type water boiler the electrodes 4 are provided with insulating shields 10 and are carried by a hydraulic piston 7, movement of the shields being under the control of an electrically operated pump 13 and electrically operated valve 15, the pump and valve being operated by a thermostat 17 to maintain the water temperature within predetermined limits. The thermostat 17 comprises a "low" contact and "high" contact, the closure of the "low" contact causing operation of the pump 13 to raise the shields, exposing more of the electrodes and thereby increasing the temperature of the water, and closure of the "high" contact causing the valve 15 to be opened so that the shields are allowed to fall and the temperature of the water is decreased. In the event of failure of the control apparatus, or should the temperature of the water rise excessively, a second thermostat 24 is adapted to operate a relay 25 to switch off the main supply to the electrodes.
Patent GB-520630-A (GB)
Title: Improvements in and relating to cinematographic or like moving display apparatus
IPC: G03B15/08
Filed: 1938-10-21
Abstract: 520,630. Changing signs. PAVELY, D. A., and WILLIAMS, L. E. Oct. 21, 1938, No. 30520. [Class 3 (i)] [Also in Group XX] Images on a flexible band are successively displayed by means of a rotating blade or flat frame; the band may be divided by folds or hinges between the images, and the blade may be rotated by the pull of the band as it is wound on to a spool. As shown in Fig. 1, the band 14 is wound on to a driven spool 5 from a spool 4, by way of rollers 18 and a blade 14 rotated on a spindle 13 by the band ; alternatively the spool 4 may be driven for reverse winding. The casing of the apparatus may comprise a viewing aperture 3 and doors 31, 32, and may contain a lamp 21 and brakes 22 operating by the pressure of springs 24 on the wound band or on pulleys secured to the spools. A modification is described comprising a rotary shutter driven by bevel gears from the spindle of the blade 14. In a further modification, Fig. 9, the casing is formed from a folded blank described in detail, and comprises transverse portions having edges 72, 73 that replace the rollers 18. The images on the band 14 may be separated by folds all made in the same direction.
Patent GB-399993-A (GB)
Title: Improvements in couplings or clamps for scaffold poles and the like
IPC: E04G7/16
Filed: 1932-10-31
Abstract: 399,993. Scaffold clamps. MAGIS, A. A. G. and MAGIS, R. A. P., 3, Rue La BoÛtie, Paris. Oct. 31, 1932, No. 30569. Convention date, Oct. 31, 1931. [Class 20 (ii).] Relates to couplings or clamps for scaffold poles and the like of the kind comprising two clamping members which embrace the poles and which are pivotally interconnected at their bases in such a manner that the two poles may be secured at any relative angle in two parallel planes. According to the invention, the two clamping members or stirrups 1 are interconnected by a hollow pivot 2 having an annular recessed portion with which the bases of the stirrups engage. In the form shown, the pivot is formed with two flanges and is built up from two rings interconnected by riveting or welding. The poles 3 are secured in position by a bolt 4 and nut 5, or by a bridge-piece 6 and screw 7, which securing means pass through the wings of the stirrups. The tubes, when secured in position, exert a pressure on the pivot 2 and are thereby frictionally held in the desired relative angular positions. The Specification a,s open to inspection under Sect. 91 comprises also a coupling device in which two discs 11, Fig. 4 (Cancelled) are riveted or welded to the stirrups and engage in an external ring 13. The edges of the ring are not so thick as the bases 14 of the stirrups. In a modification, the ring is thicker than the bases so that the poles 3 are locked at the desired relative angle when clamped in their respective stirrups. This subject-matter does not appear in the Specification as accepted.
Patent GB-210874-A (GB)
Title: Improvements in cartons or like containers
IPC: B65D3/28
Filed: 1922-11-09
Abstract: 210,874. Everson, H. Nov. 9, 1922. Contents, delivering. -A box for peas &c. of the type consisting of a tubular body having its ends closed by flanged covers, is provided with an opening c in one side of the body adapted to be closed by a flap which is held in position by part of the covering label or by a separate label. The flap d, which may be formed integrally with the box body, may be hinged thereto as shown in Fig. 1 or may be slid into position.
Patent GB-1186639-A (GB)
Title: Knock-Out Masking Techniques
IPC: H04N1/387
Filed: 1968-06-27
Abstract: 1,186,639. Knock-out masking. PRINTING DEVELOPMENTS INTERNATIONAL S.A. 27 June, 1968 [28 June, 1967], No. 30664/68. Heading H4F. In a system for producing separate colour separation negatives 40, 41, 42 and 43 from a colour transparency 11 by scanning the colour transparency and developing separate colour image signals 26, 27, 28 and 29, further detail different from that in the transparency, such as lettering, is superimposed on the colour separation negatives by scanning a knock-out mask 45 bearing this further detail synchronously with the colour transparency to develop colour component signals 67, 68 and 69 representative of the further detail on the mask. Colour component image signals are produced by the colour analizer head 15 corresponding to detail on the colour transparency and fed via a colour correction circuit 20 and gates 35 to glow lamps 30, 31, 32 and 33 which form the colour separation negatives. Colour component image signals are also produced from the knock-out mask by a further colour analizer head 65 and fed via masking circuits 70, 71 and 72 to knock-out triggers 80, 81, 82 and 83. These triggers are arranged to block the signals due to the colour transparency at such times as signals are produced due to the knock-out mask, and replace them by signals from a printing colour source 90, 91, 92 or 93 actuated by the signals due to the knock out mask. The colour produced by a particular printing colour source need not be identical with that colour on the mask which produced the signal activating that source. Adjustment of the colour to that required is achieved by variation of the potentiometers 94 in the printing colour source. The knock-out masks are made by producing the required images on black and white film and colour toning chemically as required, thus producing a less grainy image than would be obtained by using colour film. The masks may be complex, comprising several superimposed films. A modified system is described in which a subsystem, Fig. 4 (not shown), allows a choice during one scanning of seven reproducing colours by using a 3-digit binary colour code. In this embodiment seven printing colour sources are activated by triggers via AND gates when a colour component signal due to the knock-out mask is present, the particular source being activated at any instance depending upon the combination of trigger outputs.