baber/WOPTO huggingface dataset:
Patent GB-177506-A (GB)
Abstract: 177,506. Krupp Akt.-Ges., F. March 23, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Cash registers; machines with several itemvalue totalizers.-Relates to key-set and independently operated cash registers and like machines with multiple. totalizers, and comprises means for putting a selected totalizer into gear with elements differentially operated by amount key controlled means. The amount, and one totalizer-selecting special, key banks, B and C respectively, are shown, the differential segments of the amount keys gearing with coaxial racks b<11> adapted to be coupled by broad pinions with coaxial racks, b<12> so as to operate at the correct time, through nested sleeves, the totalizer-operating gear-wheels f<2>. The totalizers are mounted in yokes pivoted in the end walls of a drum G' and having rollers h<3> to engage a groove i<6>, Fig. 8, in a disc J positively connected by a sleeve to the sector C<1> differentially set by the special keys. The groove i<6> maintains the totalizers out of gear with the actuating-racks f<2>. An interrupted part of the groove i<5> is formed in a slide J<4> so as to allow radial movement of the latter by means of a cam groove k<5> in a disc K positively connected to the driving-disc C<10> of the special key bank which is rocked from a cam E<2> the groove in which is arranged to cause the complete up- and-down movement of the driver disc c<10> before the registering movement of the amount key driver discs takes place. By this means this disc J is set to select the totalizer, and the disc K is operated to put the totalizer into gear with the actuating gear-wheels f<2> before the latter are operated. A similar method of selecting and putting into gear one of a number of totalizers might be employed with straight racks instead of circular.
Patent GB-859896-A (GB)
Title: Improvements in circuits employing photo-conductive devices
Inventor: SMITH DENNIS CLAYTON
IPC: G01J1/16
Filed: 1958-06-03
Abstract: 859,896. Photo-transistor circuits; measuring shaft rotation photo-electrically. ERICSSON TELEPHONES Ltd. June 2, 1959 [June 3, 1958], No. 17752/58. Class 40(3). [Also in Group XL(c)] Photo-electric circuits, Fig. 1. Two photo-transistors 10 and 12 are connected in series so as to produce a potential change at the common connection proportional to the difference in their illuminations, and have their characteristics matched as regards current gain, collector saturation current and photo-conductive sensitivity in order that the potential of the common connection may be independent of temperature. The potential change at the common connection is employed to trigger a bi-stable circuit comprised of transistors 16 and 17, a measure of "hysteresis" (i.e. difference between the trigger on and trigger off levels) being introduced into the circuit by connecting the collector of transistor 17 to the base of photo-transistor 12 whereby the circuit tends to stay in the condition in which it is set by the change of potential at the common connection. Oppositely phased outputs are derived from terminals 23 and 24. Measuring shaft rotation, Figs. 2-4. Two photo-electric circuits as shown in Fig. 1 may be embodied in apparatus for measuring the rotation of a shaft 30, Fig. 2, with the aid of annular diffraction gratings 33, 34. One grating 34 is attached to and rotates with the shaft whilst the other grating is held stationary and illuminated by a lamp 31. Light passing through the gratings is detected by four photo-transistors (of which only two, 10 and 12, are shown) disposed at 90 degrees intervals around the gratings. Each pair of diametrically opposed photo-transistors is connected to form a circuit as shown in Fig. 1. Grating 33 has 250 and grating 34, 249 equally spaced radial lines. The light passing through the gratings forms a moirÚ fringe pattern consisting of a ring of light having diametrically opposed points of maximum and minimum intensity. When the shaft is rotated through one full revolution the fringe pattern rotates 250 times. When the shaft rotates in a clockwise direction the photo-cell circuits produce outputs in the sequence shown in Fig. 4, terminals 1 and 2 corresponding to terminals 23 and 24 of one diametrically opposed pair and terminals 3 and 4 corresponding to the terminals of the other pair. Rotation in the reverse direction reverses the output sequence. The photo-cell circuits are connected to an assembly of gate circuits as shown in Fig. 3, the gates, Fig. 5 (not shown), having the property (see Group XL(c)) of producing an output only when the input signals appear in a predetermined order. A first group of gates 40-43 produce outputs when the shaft is rotated clockwise and a second group 45-48 produce outputs when the shaft is rotated anticlockwise. A difference counter gives an indication of the instantaneous angular position of the shaft and rate determining device gives an indication of shaft rotational speed.
Patent GB-689110-A (GB)
Title: Improvements in or relating to optical objectives
Inventor: WREATHALL WILLIAM MICHAEL
IPC: G02B13/14
Filed: 1950-07-17
Abstract: 689,110. Optical objectives. TAYLOR, TAYLOR, & HOBSON, Ltd. July 17, 1951 [July 17, 1950], No. 17818/50. Addition to 619,818. Class 97 (i). A corrected objective comprises two members separated by an air-space whose axial length lies between zero and 1.2 F, where F is the equivalent focal length of the rear member, the rear member having an overall axial length between 0.5 F and 2.2 F, and comprising at least three convergent components, at least two of which are compound, whilst the front member consists of a simple element having one surface slightly aspherical. The objective claimed in the parent Specification is modified, according to the invention, to render it suitable for other applications such as to miniature radiographic cameras referring short focal lengths. Numerical data are given for two examples in which, as in the parent Specification, the rear member consists of three doublets and for one example in which the rear of the three doublets is replaced by a simple thick lens. Data for one example are given of the objective shown which includes a curved plate in the focal plane to support a photographic film, and for one example in which such plate is omitted. Finally one example is given of an objective as shown, in which the rear simple component of the rear member is replaced by a convergent doublet. Specification 610,269 also is referred to.
Patent GB-605056-A (GB)
Title: Extrusion press for the covering or coating of electrode rods
IPC: B23K35/40
Filed: 1945-07-12
Abstract: 605,056. Hydraulic machines. GLOOR, K. July 12, 1945, No. 17824. [Class 69 (ii)] [Also in Group V] A piston 16 is moved to and fro in a cylinder 31 by means of hydraulic pressure from a pump 50, and the speed of the piston is maintained substantially constant by means including a valve 53 rotated by an electric motor 56. If the motor is idle, movement of the piston to the right from the position shown is transmitted by bar 38 and nut 67 to the valve, thus opening both sides of the piston to pressure, whereupon it stops. But when the motor is running, the valve screws into the nut 67 and moves to the left to offset the rightward movement of the piston, so that the piston continues to move. If the piston slows down, the opening X enlarges and favours release of pressure fluid from behind the piston. If the piston speeds up, the opening decreases and the flow area for returning is decreased. This arrangement forms part of an extrusion press (see Group V). The motor is automatically reversed by an abutment 73 which travels with the cylinder 15 and moves between stops 74, 75, to operate a switch 81.
Patent GB-1058896-A (GB)
Title: Improvements in or relating to heating arrangements for houses without basements
IPC: F24D5/00
Filed: 1965-04-28
Abstract: 1,058,896. Heating buildings. BAHCO A.B. April 28, 1965 [April 29, 1964], No. 17892/65. Headings F4U and F4V. A space beneath the floor of a non-basement house is thermally insulated from the underlying ground and hot air is injected into the space through a horizontally directed nozzle at a speed exceeding 5 metres per second. From the space the air is supplied to the various rooms through valves.
Patent GB-1110899-A (GB)
Title: Water heating and storage system
IPC: F24D17/00
Filed: 1966-04-25
Abstract: 1,110,899. Hot water supply systems. A. L. MILLER. 25 April, 1966 [1 June, 1965], No. 17907/66. Heading F4A. A hot water storage system comprises a cylindrical storage tank 11, connected to a gas fired water heater 12 by flow and return pipes 32, 37 respectively. The gas and water supplies to the heater are controlled by thermostat 36 mounted at the bottom of storage tank 11. Water for supply at 180 F. is drawn off through outlet 17, and a further supply at 140 F. is delivered through outlet 23, water from conduit 18 being admixed with cold water from inlet 22 by thermostatic mixing valve 19. Cold water is supplied to the tank 11 either through conduit 39 and return conduit 37, or directly to the bottom of the tank beneath a diffuser plate or the mixing chamber 41. The chamber 41 (see Fig. 3) comprises a rectangular box like enclosure surrounding the inlet 38 and outlet 33 of the return and flow pipes 37 and 32 respectively, and defining a space (42) which communicates with the main body of the tank 11 only through small spaces (51, 52) between the top and bottom walls (45, 46 respectively) of the chamber 41, and the side wall of the tank 11. Thus turbulence in tank 11 due to the circulation of water to the water heater 12 is prevented, since only a small convection flow passes from the chamber 41 to the main body of the tank 11 through the spaces (51, 52). Inclined baffle plates (43, 44) further restrict the flow through the spaces (51, 52) respectively.
Patent GB-279153-A (GB)
Title: Improvements in & relating to cutters for boring & milling & like machines
IPC: B23C5/00
Filed: 1926-07-17
Abstract: 279,153. Williams, E. July 17, 1926. Boring-heads; milling-cutters. - A rotary cutter for boring, grooving &c. has teeth of different shapes so as to produce the desired shape of cut in a number of stages and is mounted on a hollow shaft for conveying lubricating or cooling fluid to the cutting edges. The teeth may be shaped as shown in Fig. 3 and act successively to produce a rectangular groove, the cutter having radial passages or grooves communicating. through a central boss with the hollow shaft. Alternatively, cutters 3 may be mounted in a body 10 having radial passages 7 for lubricant &c., or in axially disposed recesses 11 in the body. The desired shape of cut may be produced by a single cutter or may be distributed between a number of cutters. The lubricant &c. may be discharged by centrifugal action or by pressure. Specification 263,580 is referred to.
Patent GB-1142938-A (GB)
Title: Pattern and process for precision investment casting
IPC: C08L91/08
Filed: 1966-04-25
Abstract: 1,142,938. Moulding moulds. PRECISION METALSMITHS Inc. 25 April, 1966 [26 April, 1965], No. 17932/66. Heading B5A. [Also in Divisions B3, C3 and C5] A moulded workpiece pattern for making a casting mould by the lost wax method is composed of 5-40% of a vinyl resin, 30-70% of a compatible organic material such as a natural or synthetic resin and 10-50% of wax (see Division C3). The pattern is formed from the composition by injection moulding and the mould formed around the pattern. The pattern is finally removed by heating to melt it preferably by placing in a furnace at 1600- 2300‹ F. The mould is preferably a ceramic shell mould formed by repeated dipping and stuccoing operations. In an example a mould is formed using a suspension of zirconium silicate flour and fused silica flour in colloidal silica gel. The first two dips were sanded with granular zirconium silicate and four further dips with coarse fireclay grog. After drying the pattern was removed by placing in a furnace at 2000‹ F.
Patent GB-1015052-A (GB)
Title: Improvements in and relating to steam condensers
Inventor: SUDALL ALLAN
IPC: F28B1/02
Filed: 1961-05-17
Abstract: 1,015,052. Steam condensers. ENGLISH ELECTRIC CO. Ltd. May 11, 1962 [May 17, 1961], No. 17933/61. Heading F4S. A condensing steam turbine T is mounted on a concrete foundation and an exhaust-steam condensing chamber 7 and header chambers 9, 10, 11 for the condenser tubes 8 are formed in the concrete, at least a part of the interior surface of the steam condensing chamber 7 being coated with an expoxy resin. Preferably also the interior of each header chamber and, if desired, the culverts conducting the coolant water to and from the headers, are also coated with the resin. The resin coatings are said to inhibit erosion of and air leakage through the concrete. The concrete foundation beams 3 supporting the turbine may have additional protection by the provision of linings 15 of steel, resin, or latex cement.
Patent GB-434555-A (GB)
Title: Improvements in and relating to telephone book cabinets
IPC: H04M1/22
Filed: 1934-06-18
Abstract: 434,555. Cabinets. MARTIN, J., 844, Cosburn Avenue, Toronto, Canada. June 18, 1934, No. 17960. [Class 52 (i)] [See also Group XXXIX] A cabinet for attachment to a wall has a hinged flap 4, serving as a book - rest, and a telephone - supporting bracket 15 mounted on its top fitted with a lamp 17 to illumine the book - rest and the telephone dial.
Patent GB-1034316-A (GB)
Title: Improvements relating to centrifugal distillation apparatus
IPC: B01D3/30
Filed: 1963-05-07
Abstract: 1,034,316. Centrifugal distilling apparatus. BRITISH PETROLEUM CO., Ltd., and W. L. THOMAS. April 14, 1964 [May 7, 1963], No. 17968/63. Heading B1B. Liquid enters a distilling column at H, passes to the centre of a pair of plates A and B beneath H, the upper plate B being stationary and mounted on the column casing and the lower plate A being mounted on a rotating shaft G, and the liquid then moves by centrifugal action to the periphery of the rotating plate A along a tortuous path between alternating rings D and E on the plates. It then descends to the top of the next lower plate B and runs towards centre of column on to the next rotary plate, and so on down to column base. The liquid is heated at the column base and the vapour formed passes up the column back through the tortuous paths where it contacts the descending liquid and strips it of its more volatile components. Above the inlet H the ascending vapour contacts descending reflux from line J, and is removed via line T to a condenser. The plates preferably are between 15 degrees and 85 degrees to the horizontal and from 5 inches to 5 feet in diameter. The rings on each plate are separated by a distance which increases towards the centre of the plate or that the area enclosed between any two consecutive rings is the same. Radial vanes C on the underside of each rotary plate permit low pressure differential in the column. Less volatile components are recovered via line K.
Patent GB-497941-A (GB)
Title: Improvements in method and apparatus for coating containers
IPC: B05D3/04
Filed: 1937-06-29
Abstract: <PICT:0497941/III/1> <PICT:0497941/III/2> <PICT:0497941/III/3> A process of lining a large metal container with a protective coating, consists in coating the interior surface with a thermoplastic heat-hardening material and then hardening the coating by passing into the container a continuous supply of hot air which subsequently escapes from the container, said air being introduced through a distributing device so arranged that the whole coated surface of the container is uniformly heated.  The inner surface of the container may be cleaned and sand-blasted before the coating operation. Apparatus for carrying out the process is shown, comprising a furnace 11 and fan 12 delivering hot air to the interior of the tank 6 which has been lined with a thermoplastic heat-hardening material 7, and the conduit 14 is provided with discharge branches 15, 16 for equalizing the distribution of the hot air throughout the tank.  A sectional heat-insulating blanket 8 may be arranged around the tank and thermometers or pyrometers 9 may be provided.  When the metal lower portion 33 of a tank, having an upper portion 32 of wood, is to be lined, a temporary partition 38, carrying insulatin material 39, may be inserted.
Patent GB-1389938-A (GB)
Title: Apparatus for the detection of breaks in moving threadlines
IPC: B65H63/032
Filed: 1972-04-19
Abstract: 1389938 Rollers; thread breakage detection ICI (EUROPA) FIBRES GmbH 19 April 1972 [18 May 1971] 18117/72 Heading DID [Also in Division G1] A device for detecting a break in a travelling threadline comprises a driven roll 3 and an idler roll 4 around which the thread passes several times and which is driven by the motion of the thread, and means for detecting the speed of the idler rolls and emitting a signal when this speed increases by a predetermined amount or decreases by a predetermined amount thus indicating a break in the thread.  As shown in Fig. 2 the idler roll is mounted on races 12 to rotate about a shaft 7 which carried a fixed flange 13. Two magnets are mounted in a recess in the flange and are joined by a ferromagnetic rod which is surrounded by a coil 16. Ferromagnetic poles 15 are spaced around the roll at a distance equal to the separation of the magnets, and a signal is induced in the coil dependent on the speed of rotation and the number of poles. The output frequency F 1  is mixed with a standard frequency F 2  at a diode D (Fig. 4 not shown) the difference frequency F 1 -F 2  or F 2 -F 1  being fed to a tuned circuit LC resonant at a frequency F 3  in the input circuit of a transistor Tr 2 , so that when F 3  is reached an alarm is given and/or the thread supply is interrupted. Operation occurs when F 1 -F 2 = F 3  indicating a break after the driven roll or F 2 -F 1 =F 3  indicating a break before the driven roll. By appropriate selection of F 2  and F 3  warning may be given at any desirable speeds above and below normal. The speed detection may be made by magnets fixed and the idler roll and associated with a fixed coil.
Patent GB-141983-A (GB)
Title: Improvements in lasts and their use in treating the stiffened portion or portions ofboots or shoes
IPC: A43D11/14
Filed: 1919-07-21
Abstract: 141,983. Stubbs, W. A. July 21, 1919. Drying, softening, and like treatment. - To facilitate lasting, a last is provided with means whereby steam or hot air or a stiffening fluid may be directed against the inside of the toe and heel of an assembled, 'shoe for the purpose of softening or stiffening the stiffeners. In the hinged last, Figs. 1 and 2, the usual jack thimble 15, to which steam is adapted to be admitted, communicates by way of tubular lining members 17 with a U-shaped member 16 housed in the heel part of the last, the member 16 being provided with ports 19, and by way of tubular members 23, 23<1> with a bushed cavity 21 in the toe part of the last, ducts 24 radiating from the cavity as shown. Fig. 4 shows the invention applied to a solid last with a removable instep portion, the duct 23 being drilled through the last before the jack thimble is inserted and the rear end of the duct being closed by a wooden plug 38. Fig. 5 shows an apparatus for admitting steam to a hinged last of the type shown in Figs. 1 and 2, while at the same time the outside of the toe of the shoe is heated in a steam chamber 40 of ordinary construction. The last is carried on a tubular member 26, which communicates through a valve 33, sliding block 31, pipe 30, and a flexible tube 29 with a steam pipe 28; this pipe also communicates through a pipe 41 and valve 42 with the steam chamber 40. The member 26 is adjustably connected by links 44, 45 with the valve 42, the arrangement being such that, as the member 26 is swung from the position shown in dotted lines to the position shown in full lines, it opens both valves 33, 42. The flexible connexion enables the block 31 to be adjusted for lasts of different sizes, being afterwards locked in adjusted position by a pin 50 engaging holes 51; a corresponding adjustment is made between, the link 44 and the valve 42.
Patent GB-274105-A (GB)
Title: Control gear with compressed air drive, particularly for the control of the steering wheels of automobiles
IPC: B62D5/10
Filed: 1927-07-08
Abstract: 274,105. Lang, R. J. July 12, 1926, [Convention date]. Hydraulic and pneumatic transmission.-Comprises pneumatic servo-motor steering gear in which the inside or pressure lap of the slide valve is greater than the outside lap so that when the valve moves from its central position relatively to the piston one side of the piston is connected to pressure before the other is open to exhaust. In the construction shown in Figs. 1 and 3 the steering rocker-arm 40, connected to the stub axles, is operated by a piston rod 8 fixed to a piston 7, a slide valve 9 working within the hollow piston-rod being controlled by a handoperated shaft 1 through toothed gearing 3 and screw-and-nut gear 4, 5. One end of a lever 10 pivoted on the nut 5 is connected at 16 to the valve rod 17 and the other end is pivoted at 13 to a slide 12 fixed to an extension of the piston rod 8 so as to reciprocate therewith. Compressed air is admitted through a reducing valve 20 and port 19 in the cylinder 6 to an annular recess 18 in the piston communicating with the slide valve through ports 21. Ports 23, 24 in the piston communicate respectively through passages 28, 27 with the spaces 26, 25 below and above the piston. The passages 32, 33 of the valve communicate through ports 34 with the hollow centre of the valve spindle which is open to the atmosphere. The valve is shown in mid position in Fig. 3, and it will be seen that if the piston moves relatively to the valve, due to leakage, say, one of the ports 23 or 24 will be in communication with the pressure space 31 of the valve before the other is in communication with its exhaust space 32 or 33, and the piston will be brought back in its proper position relative to the valve. The reducing valve 20 is controlled by a rod 48 from the driver's seat. In a modification the nut 5 is rotated directly by the steering handwheel, the screw 4 is fixed to the valve rod and is prevented from rotating, the cylinder 6 is pivoted to the frame, and the piston rod 8 is pivoted directly to an arm 40 fixed to the steering- arm.
Patent GB-910261-A (GB)
Title: Process for the polymerisation of ethylenically unsaturated hydrocarbons by means of fluidisable catalysts, and a process for the production of these catalysts
IPC: C08F4/68
Filed: 1961-05-18
Abstract: Ethylenically unsaturated hydrocarbons in the gaseous state may be polymerized in contact with a catalyst composition comprising a trihalide of titanium or vanadium, an aluminium alkyl compound and a solid, inert diluent characterized in that said catalyst is prepared by mixing its components while maintaining the fluidizability of the mixture.  The aluminium alkyl in the gaseous state, e.g. in an inert carrier gas, or in the liquid state, e.g. dissolved in an inert hydrocarbon solvent, may be adsorbed on the inert diluent and the product mixed with the trihalide. Alternatively the aluminium alkyl may be contacted with a mixture of diluent and trihalide.  The solid particles may be agitated, e.g. by mechanical stirring or preferably fluidizing, during contacting with the aluminium alkyl.  The catalyst is preferably heated before use.  Polymerization may be effected while maintaining the catalyst, optionally together with other inert solid materials such as sodium chloride, in a fluidized state. Preferred trihalides are the chlorides and bromides.  Preferred aluminium compounds are the trialkyls and the dialkyl and monoalkyl chlorides.  The solid diluent may be silica gel, kieselguhr, alumina, pumice powder, calcium oxide, magnesium oxide, sodium tripolyphosphate, calcium carbonate or sodium chloride.  Examples describe the polymerization of propylene in the presence of fluidized catalysts prepared from titanium trichloride, diethyl aluminium chloride and as solid diluents (1) silica gel and sodium chloride, (2) silica gel and (3) sodium tripolyphosphate, calcium oxide, alumina and polypropylene. Specification 837,301 is referred to.