baber/WOPTO huggingface dataset:
Patent GB-152731-A (GB)
Title: Improvements in and relating to household stoves
IPC: F24B9/00
Filed: 1919-07-10
Abstract: 152,731. Nance, A. M., and Tozer, F. M. July 10, 1919. Cooking-stoves; grates; doors; ovens and hot closets; boilers. arrangement of.-A niultiplefronted stove adapted to heat, as desired, four rooms, the partition walls of which meet at a point, consists of a circular grate 8, a dome-shaped oven 3 beneath it, and a heating-chamber 9 above it. Above this may be a hot-water tank 19. The chamber 9 is circular in horizontal section, and is traversed by a vertical flue 1 leading to the chimney. The floor of the chamber serves as a hotplate, and has the usual potholes. Doors are fitted to provide access from the kitchen and if desired from other rooms, and shelves 11 may also be fitted. The grate may also be enclosed by sliding or preferably hinged doors 14, which are preferably backed with asbestos. The part of the grate front facing the kitchen is made in two parts connected by a hinge 22, Fig. 4. The upper part is secured by a bolt 24, and the lower part is attached removably to the stove by hooks 23, 25. Partitions 15 separate the parts of the grates facing different rooms. The bottom of the grate consists of concentric slats 7, Fig. 1. The ashes fall into trays 13. A water-heater, supplied with water from a main 16, passes round the top of the fire, and delivers hot water to a tank 19, whence the hot water may pass to a radiator-system, and back to the main by a branch 21. The casing 30 of the oven is usually filled with asbestos, but if the oven is deep the packing 31 is omitted, and steam is conducted into the casing by a branch from the water-heating coil 17. A return pipe connects the casing and the pipe 18.
Patent GB-771453-A (GB)
Title: Carbonated potash
IPC: C01D7/18
Filed: 1954-06-14
Abstract: An aqueous solution of potassium carbonate and bicarbonate is produced by first passing an aqueous solution of potassium chloride, preferably a saturated solution, through a sulphonated phenolic, a carboxylic acid or a sulphonated polysyrene cation exchange resin, in an amount equivalent to less than 100 gm. potassium chloride per litre of resin, preferably 65-85 gm./l., so as to form the potassium salt of the resin, washing substantially all the chloride from the resin, and then passing an aqueous carbonated ammonia solution, preferably a saturated solution, having a NH3/CO2 ratio of 1.1-1.3 through the resin in an amount at least three times that required for exchange with the resin, so as to replace the potassium of the resin by ammonium, followed by washing with water to remove residual potassium from the resin.  The resulting solution may be partially vaporized to remove ammonia and carbon dioxide which is returned to the process, and the remaining solution treated either with caustic potash or lime and then further vaporized to crystallize potassium carbonate.  Alternatively crystallization may be effected by vaporization by submerged combustion, the ammonia and carbon dioxide being removed in an intermediate stage.
Patent GB-1247783-A (GB)
Title: Production of indole acetaldehydes
Inventor: GAL GEORGE
IPC: A61K31/40
Filed: 1969-04-02
Abstract: 1,247,783. Anti-inflammatory &c medicines. MERCK & CO. Inc. 2 April, 1969 [9 April, 1968], No. 17384/69. Heading A5B. [Also in Division C2]  Pharmaceutical compositions having anti-inflammatory and antipyretic activity, comprise a compound of formula I: in which R 1  is a substituted or unsubstituted aroyl or heteroaroyl radical, R 2  is hydrogen or C 1-5  alkyl and R 3  is alkyl, alkoxy, amino, alkylamino or dialkylamino, and a carrier. The compositions may be in tablet or capsule form for oral administration.
Patent GB-701491-A (GB)
Title: Continuous thread tester
IPC: G01N3/08
Filed: 1952-07-10
Abstract: 701,491. Testing strength of yam. COOK & CO., MANCHESTER, Ltd. July 10, 1952 [Oct. 2, 1951], No. 17390/52. Class 106 (2) In apparatus for testing thread by suspending weighted means in a loop of thread which is being continuously advanced by driving means each side of the loop, the first driving means advances the thread at a constant speed, the second and following driving means advances it at a relatively higher but constant speed and an adjustable tension device in advance of the first driving means is controlled by a connection to the weighted means. As shown, the thread 1 passes through an adjustable tension device, comprising a pair of opposed discs 2, 3, a biasing spring 4 and control stem 5, and is then trained round a pair of stationary snub bars 6, 7 to increase the drag applied by the tension device. The thread is then trained round 'a plurality of snub bars 8 all of which are driven e.g. by an endless chain, from a motor. Next, in the control loop is suspended a pulley 11 and from the pulley block is suspended a platform 13 to receive weights. From the loop the thread enters second driving means comprising a similar series of snub rollers 14 similarly driven but controlled to ensure that thread is taken out of the loop faster than it is fed in, e.g. by passing the second drive through a double-cone type of adjustable speed control. The weighted pulley 11 serves to elongate the thread and for any relative speed of the drive means, variations encountered in the thread will cause the pulley 11 continually to tend to rise and fall. The pulley is stabilized by causing the tendency to rise and fall to adjust the tension device and hence the elongation of the loop. Downward movement of the pulley 11 rocks a lever 18 about its pivot 19 through a cable 17 and a cable 21 rocks a bell crank lever 22 about its pivot 23 to move the control stem 5 to the right in Fig. 2 to increase the tension in the thread. Conversely a tendency for the pulley to rise causes the tension to be relieved. Several holes 20 in the lever 18 for connecting the cable 21 enable the .leverage to be adjusted and a spring 25 inserted in the cable 21 absorbs shocks, minimizes hunting and ensures that the force exerted on the thread corresponds to the dead weight of the applied load. To ensure prompt stopping of the feed when the thread breaks the falling of the weight may actuate a switch 26 to open the motor circuit 27.
Patent GB-403424-A (GB)
Title: Improvements in and relating to folding tables and the like
Filed: 1932-06-20
Abstract: 403,424. Hinges; stays. GREAVES, F. A., and THOMAS, A. J., (trading as GREAVES & THOMAS), Amherst Works, Northwold Road, Clapton, London.-(Seng Co. ; 1450, Drayton Street, Lincoln Park Station, Chicago, U.S.A.) June 20, 1932, No. 17437. [Classes 65 (i) and 65 (ii).] A bracket 4 of pressed metal is secured by screws to the parts 5 of a table etc.; it is formed with a bent piece 6, in which is secured a pivot 7 for the leg 8, and with a hook-like part 9 which partly embraces the leg 8. A strut 10, with an elongated keyhole-like slot 11, is pivoted to the bracket 4, and slides over a pin on the leg 8 ; when the leg is upright, the enlarged lower end of the slot 11 slips over an enlarged part of the pin, the strut being bent, or secured to the bracket 4, in such a way as to produce a resilient effect tending to move the end of the strut outwards from the leg.
Patent GB-674702-A (GB)
Title: Improvements in and relating to alternating current electromagnets
IPC: H01F7/12
Filed: 1950-07-12
Abstract: 674,702. Electromagnets. BRITISH THOMSON-HOUSTON CO., Ltd. July 12, 1950 [July 26, 1949], No. 17471/50. Class 35. A laminated electromagnet has at least one polar projection with a shading coil 22 in a slot 20 cut parallel to the laminations at its pole face and with a separator 21 of non-magnetic material abutting in this slot and separating the polar projection into two portions. Fig. 4 shows a U-shaped electromagnet having two shading rings 22 and two separators 21 of non- magnetic material displaced from each other but extended to the middle of the bight portion of the core where they abut on a third separator 19 placed perpendicularly to the laminations.
Patent GB-175525-A (GB)
Abstract: 175,525. Hathaway, H. A. Feb. 8, 1921. Hand-knitting appliances.-A knitting pin is composed of a core a of aluminium or alloys thereof and a covering b of brass or of other metal or alloy capable of being drawn into the form of a thin sheath. One or both ends may be pointed by a swaging operation, and the core is removed for a short distance near the ends to be pointed to facilitate this operation.
Patent GB-711584-A (GB)
Title: Dew-point measuring device
IPC: G01N25/68
Filed: 1952-07-11
Abstract: 711,584. Hygromatic apparatus. ILLINOIS TESTING LABORATORIES, Inc. July 11, 1952 [July 13, 1951], No. 17587/52. Class 97(3) A dew-point measuring instrument comprises moisture collecting means, means for bringing a gas sample into contact with the moisture collecting means, means for lowering the temperature of the moisture collecting means at a smooth rate, and temperature sensitive means for detecting an abrupt change in said rate due to the addition of heat arising from the condensation of vapour of said gas, the material and dimensions of the collecting means being such that very small reductions in the heat content thereof produce appreciable temperature changes whereby the temperature sensitive means is rendered sensitive to the latent heat of condensation in a sufficiently short time for the said temperature sensitive means to respond clearly, thereto. The instrument shown comprises a capillary tube 28 which terminates below a metal plate 30 and through which is passed a refrigerative gas, e.g., carbon dioxide, which expands and cools the plate 30. Consequently a plate 43 as of glass and gas in a chamber 42 having an inlet 50 and outlet 53 are cooled. This path supports an electrical resistance element 47 forming one leg of a temperature bridge. When moisture collects on the path 43, the reading of the galvanometer associated with this bridge changes abruptly; this reading gives the dew-point. In another form, the gas is adapted to be locked in the chamber by a rotatable valve member which is of cylindrical form and detachably fits in the chamber, and the assistance element 47 is replaced by a thermo-couple.
Patent GB-212481-A (GB)
Title: Improvements in or relating to automatic shuttle guards for weaving looms
IPC: D03D49/58
Filed: 1923-07-07
Abstract: 212,481. Hough, N. July 7, 1923. Shuttle and like guards. -A shuttle guard comprises a net 8 attached to a roller 7 automatically rotated by the starting and stopping of the loom to unroll the net to extend it over the lay or to roll it up. The outer edge of the net is secured to a bar 9 having eyes 10 running on inclined fingers 11. The roller 7 is rotated by a toothed quadrant 13 engaging a pinion 12 thereon, the quadrant being connected by an arm 15 and link 16 to a lever 17 weighted at one end and tending to roll up the net. The weighted end of the lever 17 is connected by a slotted link 18 and an arm 18<a> to a lever 19 having a slot 19<a> in which runs a pin 21 on a bracket 22 carried by the setting-on rod 23. Movement of the rod 23 to start the loom raises the weighted end of the lever 17 and unrolls the net.
Patent GB-168719-A (GB)
Title: An appliance for picking up railway rails and moving or transporting same along the railway
IPC: B61D15/10
Filed: 1920-06-29
Abstract: 168,719. Twist, B. June 29, 1920. Single-rail vehicles.-Railway rails are lifted and transported by tongs E pendant from a lever having a lifting handle C and an auxiliary handle D and secured to a two-wheeled trolly at A, B. The connection at B is of the plug-and-socket type, secured by a sliding catch, Fig. 5. The wheels of the trolly are double-flanged, one flange F being deeper than the opposite flange. Two. transporters are used with long rails.
Patent GB-1176950-A (GB)
Title: Semiconductor Devices
Inventor: GERSHENZON MURRAY
IPC: H01L21/00
Filed: 1967-04-18
Abstract: 1,176,950. Electroluminescence. WESTERN ELECTRIC CO. Inc. 18 April, 1967 [26 April, 1966], No. 17722/67. Heading C4S. [Also in Divisions C1 and H1] A PN junction light-emitting diode is formed in a body of III-V compound material containing bismuth as an impurity with a concentration in the range 10<SP>16</SP> to 10<SP>19</SP> atoms/cm<SP>3</SP>. The material is of crystalline form grown from a melt containing one or more III-V compounds and an appropriate proportion of bismuth. The presence of the bismuth in the melt is found to increase the efficiency of crystal growth -e.g. for a quoted gallium phosphide crystal forming technique the presence of bismuth produces a five-fold increase in the volume of the resulting crystal. Conductivity determining impurities, e.g. group IV elements, may also be added to the melt, and the PN junction formed by diffusion of further impurity into the resulting crystal. The drawing (not shown) depicts successive stages in the manufacture of a lightemitting diode by diffusion of zinc into the surface of an N-type crystal of bismuth-doped gallium phosphide. The doped crystal is shaped by largely conventional techniques so as to constitute a plurality of mesa diodes. The III-V compounds from which the crystal may be made are the nitrides and phosphides of Ga, Al, In, B and III-V compound mixtures of which gallium arsenide-gallium phosphide alloy is quoted as an example. The preferred crystal-forming method is to form a first melt of elementary Ga Al, In, B or a mixture of them, add to this melt a III-V compound and crystallize out from the resulting mixed melt. The bismuth, whose proportion is 0À01 to 99% of the total quantity of bismuth plus first-melt elements, may be added to the melt either before or at the same time as the III-V compound. S, Se and Te may be used as additional dopants.
Patent GB-671412-A (GB)
Title: Production of keto compounds
IPC: C07C45/73
Filed: 1949-07-05
Abstract: Keto compounds are prepared by reacting an organic compound, in which a hydrogen atom attached to carbon is rendered labile by a single adjacent activating group, in the liquid phase with an alpha-unsaturated aliphatic ketone in presence of a basic catalyst. Examples describe the reaction of methyl vinyl ketone with (1) acetone in presence of alcoholic potash and butanol to give a substance in which nine acetoethyl groups have entered the acetone molecule; (2) 2-nitropropane in presence of trimethyl-benzyl ammonium hydroxide and dioxane to give 2-nitro-2-acetoethyl-propane.  Other unsaturated ketones specified are ethyl vinyl ketone, mesityl oxide, and isopropenyl methyl and ethyl ketones.  Other catalysts specified are sodium hydroxide and sodium methylate.
Patent GB-342637-A (GB)
Title: An improved tobacco pipe
IPC: A24F1/08
Filed: 1930-06-10
Abstract: 342,637. Tobacco pipes. NETTLETON, G. W., 15, Maple Street, St. Luke's, Southport, Lancashire. June 10, 1930, No. 17767. [Class 130.]. A tobacco pipe is provided in the stem with chambers 4, 6 connected by a tube 5 projecting from each end of a screw plug forming a stem joint 9; and a plug 11 in the bowl is provided with an inclined smoke passage 2 leading to the end 10 of the chamber 4. A tube 8 fitted in the end of the mouthpiece 7 projects into the chamber 6. Specification 291,198, [Class 130, Tobacco], is referred to.
Patent GB-665029-A (GB)
Title: Improvements relating to hot plates for cooking ranges
IPC: F24C15/10
Filed: 1949-07-06
Abstract: 665,029. Hot-plates for cooking-ranges. CHATWINS, Ltd., and ALLPORT, W. C. July 3, 1950 [July 6, 1949], No. 17833/49. Class 126 A cooking-range hot-plate a, beneath which hot combustion products flow on their way to the chimney flue, is formed of substantial mass to serve as a heataccumulator and has its underside formed with holes f to provide increased area of contact with the hot gases. A cover e for pot-hole d provided in the hot-plate is also formed with holes on its underside. The longitudinal edges of the hot-plate may be formed, as shown in Fig. 4, with depending flanges g to provide a channel for the flow of hot gases.
Patent GB-401411-A (GB)
Title: Improvements in and relating to hair clips for use in permanent waving of the hair
IPC: A45D6/08
Filed: 1932-06-24
Abstract: 401,411. Hair-curling appliances. CALDERON, M., 12, Hill Crescent, Totteridge, London. June 24, 1932, No. 17874. [Class 131.] A clip for holding the end of a tress of hair to be wound on a curler comprises two arms a, b pivoted together and provided with fingerpieces a2, b<2>, respectively. The arm a is formed with a lateral extension a<1> having a series of apertures a<5> adapted to be engaged by a spring catch d so positioned on the arm b that the arm does not project to any substantial extent on that side of the finger-piece b<2> adjacent the arm a. The lateral width of the clip in the open position is thus so reduced that it can be inserted on hair in a confined position. The catch d is pivoted on lugs forming the finger-piece b<2> and is provided with a coil spring e, Fig. 4. The end of the catch is turned down to a point d<2> which engages the apertures a<5>. The point is bevelled so that the arms may approach freely, but so that they cannot be separated without actuating the catch. One arm may be provided with a socket to receive the curler. The socket may be removable and provided internally with a helical spring allowing rotation of the curler in one or both directions. The socket may be in two parts, relatively rotatable with the spring interposed, and one part may have a squared aperture to engage a squared end of the curler.
Patent GB-711367-A (GB)
Title: Improvements in or relating to stereoscopic viewing apparatus
IPC: G02B27/22
Filed: 1951-07-30
Abstract: 711,367. Optical apparatus. WILSON, R..G., and SILVER, W. D. July 9, 1952 [July 30, 1951], No. 17972/51. Class 97(1) Pictures of a stereoscope pair are viewed in. superposition, directly or after projection, using a light combining system consisting of two right angled prisms with their hypotenuse faces slightly spaced. As shown, a mirror 3 is arranged parallel to the hypotenuse faces of the prisms 1, 2. Transparencies in holders 4, 5 are illuminated by a lamp 6 in a holder 7 and viewed through a lens 9. Diffusing screens may be associated with the transparencies. Opaque pictures may be viewed if illuminated through a transparent area in the base supporting the optical elements. The lamps may have heat and colour filters. The two pictures may be optically projected. The projector may have a single optical system and use a film with left and right eye pictures on the two halves of a single frame or have two optical systems and images in separate film frames. The images are preferably formed on diffusing surfaces on the faces of the prisms 1, 2. Mirrors in one or both projection beams provide equal light paths and may be adjustable to provide adjustment of one or both projected images.
Patent GB-1455393-A (GB)
Title: Clamping device for rotary tools
IPC: B27B5/32
Filed: 1974-04-25
Abstract: 1455393 Mounting saws LEDERMANN & CO 25 April 1974 [25 April 1973] 18055/74 Heading B5L [Also in Division B3] A quick change clamping device for rotary tools comprises a support adapted to be mounted on a machine spindle for drivable rotation about an axis, said support having a support surface arranged to extend radially relative to said axis, at least one elongate holding member mounted on the support so as to project at one end axially or parallel to said axis from said support surface and so as to be movable axially (or parallel therto) relative to said surface, each said holding member having an enlarged head on one end with a clamping surface thereon arranged to face said support surface whereby a tool can be mounted between said clamping and support surfaces so as to extend radially relative to said axis with said holding member passed through an opening in said tool, bias means acting on the other end of said holding member for biasing the clamping surface towards the support surface for clamping the tool between the surfaces in position relative to the support so as to be rotatable therewith, and a lifting device operable to effect movement of said clamping surface awayfrom the support surface so as to permitdisengagement of such tool from the holding member and removal of the tool from between said surfaces. A circular saw blade 14 is clamped against the supporting surface 12 of a saw mounting device by means of a series of screw elements 22 the heads 24 of which engage slots 26 in the saw blade the slots being keyhole-shaped to facilitate removal of the blade and the screw elements 22 being urged in clamping direction by a stack of spring washers 20. Cam means on a disc 29 operate on rotation of the disc to compress the spring washers to allow removal of the blade; the disc 29 is rotated by means of a radially disposed drive pinion 36 (a drive socket 37 in which is accessible on the periphery of the tool) which meshes with bevel teeth 35 on the disc 29. The annular disc portion 2 of the mounting device may carry cutters 38 in slots therein. In an alternative embodiment (Figs. 4, 5, not shown) release of the tool clamping means is effected by a pneumatically operated annular piston and cylinder. In a further embodiment (Figs. 6 and 7, not shown) the saw is made up of a series of toothed segments each secured by two circumferentially spaced holding screws. In a further embodiment (Figs. 8, 9, not shown) the mounting device has an integral hub and flange portion. In a further embodiment (Figs. 10, 11, not shown) the clamping screws bear on an annular clamping disc rather than directly on the saw blade. In a further embodiment (Figs. 12, 13, not shown) the device is adapted to support a set of axially spaced tools which are not necessarily identical. In a final embodiment (Figs. 14, 15, not shown) a cup shaped grinding tool is clamped axially against a support by an axial clamping element loaded by spring washers and adapted to be released by fluid pressure.
Patent GB-1242291-A (GB)
Title: Improvements in or relating to data exchange systems
IPC: H04L12/50
Filed: 1969-04-09
Abstract: 1,242,291. Digital transmission systems. SIEMENS A.G. 9 April, 1969 [10 April, 1968], No. 18059/69. Addition to 1,210,733. Heading H4P. In a digital transmission system employing transparent transmission and comprising a programmed exchange, and in which duration significant signals, such as calling signals, are transmitted in a code form which is not duration significant, the coded control signals are transmitted over a channel common to a group of information channels, which is assigned to one or more of these information channels as required for a limited time. Each control signal is accompanied by a signal indicating the information channel to which it is relevant. Allotting the control signal channel to a seized information channel is initiated by a signal sent to the exchange by the subscriber and the channel may remain allotted until the information channel is released. The control channel may be common to one or more groups of channels or there may be several control channels to each group. A counter at the exchange determines the number of transparent information channels in use in a group of channels, and an engaged signal is sent to any subscriber requesting a transparent channel when a preset number is exceeded.