baber/WOPTO huggingface dataset:
Patent GB-226219-A (GB)
Title: Improved process of and device for the production of moulds for artificial teeth
IPC: A61C13/08
Filed: 1924-12-12
Abstract: 226,219. Keradenta Porzellan - U. Dental-Werke Akt.-Ges., and Kammer, K. Dec. 14, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Dies for artificial teeth, buttons, small porcelain reliefs, &c. are produced by taking negatives from an undivided pattern connected to a thin metal plate along the mould joint. Where the joint is substantially plane, the pattern mav be inserted into an aperture cut in a thin plate and united thereto by welding, soldering or galvanically. For more complex joints, the pattern a, Fig. 2 is embedded in wax e and the wax cut away along the mould joint c, after which a thin plate of metal is deposited galvanicallv upon the wax so as to unite with the patern and the wax then removed. A wire e is preferably embedded in the wax about the patterns so as to form subsequent mould grooves g, Fig. 5, for cutting off excess material. Fig. 3 shows the combined pattern a and plate p from which the dies f, Fig. 5, are obtained by the galvano-plastic process. To compensate for the thickness of the plate p the die hollows are filled with wax and the edges increased by electrodeposition. Fig. 8 shows a multiple frame composing members k, i adapted to clamp the plate p with patterns attached thereto during the formation of the dies.
Patent GB-635952-A (GB)
Title: Devices for the shooting and release of panic bolts from the outside of the door
IPC: E05B65/10
Filed: 1947-11-11
Abstract: 635,952. Emergency-exit fastenings. WILLIAMS, H. M. Nov. 11, 1947, No. 29945. [Class 44] A device for releasing panic bolts from the exterior of a door or the like and suitable for use in conjunction with existing panic bolt mechanisms comprises a yoke 5, Fig. 1, or sleeve adapted to cooperate with the crush bar 3 of the panic bolt mechanism 2, the yoke or sleeve co-operating with a rod or tube 6, figure 2, slidably mounted through the door 1 or the like, the tube being provided with an external terminal knob 8 or handle and being adapted to co-operate with a catch plate 9 operable by a lock to prevent undesired releasing of the panic bolts from the exterior of the door. The crush bar 3 may be forced to its position 3a, Fig. 2, to release the bolts by pulling the outside handle 8 the bolts being shot by pressure on a knob 18 fixed to one end of a rod 17 which is slidable within the tube 6 and having its other end provided with a face 20 to bear on the crush bar 3, terminal flanges 19 preventing the rod from leaving the tube. Grooves 10 formed in the tube 6 may be engaged by the catch plate 9 which is rotated by the spindle 13 of a cylinder lock mounted on the outside of the door. The catch plate 9 may have slots 16 concentric with the lock spindle 13 in which headed studs 15 on the back plate 14 engage or may be formed with a flanged boss 9a, Fig. 8, which passes through a hole in the backplate surrounding the spindle 13 of the cylinder lock 11. If the panic bolt assembly is provided with a thumb button 21, Fig. 1, to retain the crush bar and bolts in the released position it may be rendered inoperative to allow of movement of the crush bar from the outside, by a turn button 22, keeping the thumb button depressed. In a modification, Fig. 8, a sleeve formed in one or two pieces joined by bolts passing through lugs 32, surrounds the crush bar 3 and has an inwardly directed flange 33 engageable by the outwardly directed flange 34 of tube 6 when the outside knob 8 is pulled. When the crush bar is operated from inside the door, however, with tube 6 locked by the catch plate 9, the whole sleeve 25 moves inwards, the flanges 33, 34, becoming disengaged. The knob 18 may be formed within the knob 8 and the bushes 24, in which the tube 6 slides may be chamfered as at 24b and also at the edge of the bush in the backplate 14 if required, to prevent fouling the grooves 10. In a further modification, the sleeve 25 is provided with slots in which headed studs on the ends of tube 6 may slide. The tube 6 and rod 17 may be prevented from rotation by studs in the bush 24 and tube 6 engaging corresponding keyways in the tube and rod respectively or the slots 10 and catch plate 9 may be shaped to prevent rotation of the tube 6 when locked by the latter. The outside handles may be freely rotatable upon their spindles by grub screws 37, Fig. 2. engaging annular grooves in the rod 17 and tube 6 or conical or similarly shaped extremities of the rod or tube may engage co-operating annular recesses in the knobs.
Patent GB-617588-A (GB)
Title: Improvements in or relating to clamps for pipes, conduits and the like
IPC: F16L55/172
Filed: 1946-10-08
Abstract: 617,588. Clamps. PASS & CO., Ltd., E., and COOKE, F. Oct. 8, 1946, No. 29978. [Class 61 (ii)] A pipe clamp comprises a pair of jaw members a, b pivoted together at one end c and provided with pipe engaging jaw recesses a<SP>2</SP>, b2 diminishing in size from the pivot and with a pressure applying device such as a screw and nut d, e or a cam at the end opposite the pivot, one of the members being extended to form a handle g.
Patent GB-286343-A (GB)
Title: Improvements in or relating to means for reversing a lever upon alteration in the direction of rotation of a shaft
IPC: G05G15/02
Filed: 1926-11-27
Abstract: 286,343. Redfern, G. A., (Naamlooze Vennootschap Machinerieen-en Apparaten Fabrieken). Nov. 27, 1926. Switch actuation by reversal of rotary motion. - Positively acting means for reversing a lever, for actuating electric contacts, members &c., upon reversal of the direction of rotation of a shaft, are supplemented by non- positively acting means which, after reversal of the lever, takes one of the positively acting members out of the path of contact and returns it thereto upon subsequent reversal of the shaft. The arrangement may be employed in obtaining direct current in an electric generator irrespective of the direction of rotation of the shaft. A lever A is positively rocked between stops N by engagement with its lower end L of a tooth or lug K on the rotary shaft D, the part L then being taken out of the path of the tooth by a stud J spring pressed into contact with a friction disc H on the shaft. The lever is in two parts, the lower part F having some play between stops G on the upper part E the movement of which is completed by a tip-spring M. Upon reversal of the shaft D the frictional means brings the lower end L again into the path of the tooth K which positively reverses 'the lever. Instead of frictional means, a current of air or eddy currents produced by magnets on the shaft in co-operation with a massive copper disc on the lever, may comprise the supplementary non-positive means.
Patent GB-1093374-A (GB)
Title: Improved chlorimated polyvinyl chloride
Inventor: BATTAERD HENDRIK ADRIAN JACOBU
IPC: C08F8/20
Filed: 1964-07-29
Abstract: Chlorinated polyvinyl chloride in which at least 80% of the chlorinated units are 1,2-dichloroethylene units and in which the percentage of 1,2-dichloroethylene units arranged in sequences of four or more units exceeds significantly that to be expected from a random arrangement, which polymer is substantially non-crosslinked, may be prepared by chlorinating polyvinyl chloride suspended in a liquid halogenated hydrocarbon, or in an aqueous medium containing a liquid halogenated hydrocarbon, under irradiation from a high energy radiation source (wavelength shorter than 100 Angstr<\>uom units) at a mean irradiation dosage of 2000 to 35,000 rads. per hour. Preferred halogenated hydrocarbons are carbon tetrachloride and mixtures thereof with chloroform. Cross-linking may be prevented by excluding air, or by adding organotin compounds or tricresyl phosphate.  The products may be blended with polyvinyl chloride to raise the softening point thereof.  In examples, polyvinyl chloride is chlorinated in suspension in carbon tetrachloride, chloroform, mixtures of carbon tetrachloride and chloroform, and mixtures of water, hydrogen chloride and chloroform with and without carbon tetrachloride, while exposed to a cobalt 60 source.  The products are compounded with polyvinyl chloride, dibasic lead phosphite, calcium stearate, wax, titanium dioxide and dioctyl phthalate.
Patent GB-1141543-A (GB)
Title: An improved clip
Inventor: SECKERSON CLIFFORD ALEXANDER
IPC: F16B21/08
Filed: 1966-07-05
Abstract: 1,141,543. Spring clips. F. T. PRODUCTS Ltd. 3 July, 1967 [5 July, 1966], No. 30163/66. Heading E2B. A resilient clip comprises a base portion 11 and a resilient arm 13 integral with the base portion wherein the free end of the arm is divided lengthwise into two transversely spaced fingers 15, 16, which are resiliently movable towards one another, the root portion of the arm being inclined outwardly from the base portion of the clip the two fingers being bent intermediate their lengths generally at right angles to the root portion of the arm and extending through the base portion and each finger being provided with a shoulder 18 or 20 (not shown) facing the root portion of the arm in that edge of the finger remote from the other finger. In the construction shown each finger has two additional shoulders 17 or 19 (not shown) and the clip is intended for securing a panel to a support formed with aligned apertures, the base. portion of the clip, in use, lying flat against the upper surface of the panel and the fingers extending through the panel and the support, with one of the shoulders of each finger engaged beneath the rim of the aperture in the support and the arm held thereby under tension to clamp the panel against the support. The base portion is bowed to provide resilience and the bowing is flattened in the assembled condition of the clip panel and the support; which pair of shoulders engages the support depends upon the combined thickness of the panel and the support and if desired more than two pairs of shoulders can be provided.
Patent GB-247124-A (GB)
Title: Improvements in or relating to domestic fire-places
IPC: F24B1/18
Filed: 1925-11-30
Abstract: 247,124. Williams, L. F. G. Nov. 30, 1925. O p e n fireplaces; grates.-An open fireplace, to be set in a wall opening to heat either of two adjacentrooms, comprises an outer cylinder 1 with two opposed openings 6 in which is pivotally mounted a cylindrical grate member 2 having a single opening 7 and a flue 10 adapted for revolubile engagement with the lower end of the chimney flue. The bottom of the cylinders are closed by plates carrying the pivot 5 and socket on which the inner cylinder rotates. The inner cylinder is of less height than the outer in order that it may be raised to clear away dirt beneath it. Openings 12 provide access to the lower part of this member, through which the ashes are removed. The outer cylinder in the form shown is provided with side wings.
Patent GB-533729-A (GB)
Title: Improvements relating to cellular boxes
IPC: B65D5/49
Filed: 1939-11-17
Abstract: 533,729. Containers for bottles &c. THOMPSON & NORRIS MANUFACTURING CO., Ltd., and ADAM, A. M. Nov. 17, 1939, No. 30262. [Class 18] A container for bottles has, fitted within a liner 9, 10, a set of crossed partitions 11 forming compartments which enclose and project above the larger portions of the bottles &c. and a second set forming smaller compartments superposed on the first and enclosing and projecting above the narrower parts of the bottles &c. The partitions are removable, and may be made from slitted cardboard strips so as to be collapsable.
Patent GB-1465756-A (GB)
Title: Continuous manufacture of phthalimide
IPC: C07D209/48
Filed: 1974-07-09
Abstract: 1465756 Phthalamide BASF AG 9 July 1974 [10 July 1973] 30292/74 Heading C2C A continuous process for the preparation of phthalimide comprises reacting phthalic anhydride with ammonia at elevated temperature, washing the off-gas with a melt which contains at least 70% by weight of phthalimide, at a temperature of not less than 210‹ C., and feeding the melt to the reaction. Preferably the reaction is carried out in countercurrent and the wash column is combined with the reactor by using a tray column, the phthalic anhydride melt being fed continuously to one of the middle trays, the ammonia being introduced at the bottom of the column, and the phthalimide melt, as the wash fluid, being introduced at the top of the column.
Patent GB-822801-A (GB)
Title: Improvements in agricultural implements
IPC: A01D57/20
Filed: 1954-10-21
Abstract: 822,801. Reaping machines. McBAIN, A. Sept. 15, 1955 [Oct. 21, 1954], No. 30313/54. Addition to 716,617. Class 6(3). In a modification of the windrower described in the parent Specification, the windrower frame 6 is pivoted directly to the ends of the power-open ated draught-links 1 of a tractor and the links 1 are cross-braced by members 3 connected between their outer ends and a pivot 4 on the tractor rear axle. The counterbalancing spring 9 is connected between the draughtlinks and lugs 10 on the windrowerframe 6.
Patent GB-704920-A (GB)
Title: Improvements in packages for springy-walled articles
Inventor: NEWCOMB BRIAN
IPC: B65D59/00
Filed: 1951-12-28
Abstract: 704,920. Cartons; packages. AUTOLEX, Ltd. Aug. 22, 1952 [Dec. 28, 1951]; No. 30316/51. Classes 18 and: 94" (1) A carton for nested paper baking cases &c. comprises a blank rolled to cylinducal form and the opposite ends engaged by means of slots. 5, 6. The slots are wide enough to allow slight contraction. against the resilience of the contents 10 enabling the cylinder to grip frictionally, flanged, end closures 11. Apertures 12 permit viewing of contents.
Patent GB-711136-A (GB)
Title: Improvements in or relating to reciprocating pumps for liquids
IPC: F04B15/08
Filed: 1950-12-12
Abstract: 711,136. Reciprocating pumps. BRITISH OXYGEN CO., Ltd., MOLL, J. H., and MADELEY, R. S. B. Dec. 11, 1951 [Dec. 12, 1950], No. 30331/50. Class 102 (1). A pump for liquid gases comprises a liquid chamber having a discharge port below the liquid level, and a cylinder mounted in the chamber so that relative movement causes the cylinder to register in a fluid tight manner with the discharge port. The piston, cylinder, and discharge port have relative movements so that first the discharge port and the cylinder registerto trap liquid in the cylinder and then the liquid is ejected through the discharge port and the piston and cylinder then have a short relative movement so that the pressure within the cylinder is reduced to facilitate disengagement of the cylinder and discharge port. The pump may be constructed so that either the discharge port or the piston remains stationary and the end of the cylinder has a conical seating which engages a complementary seating around the discharge port.
Patent GB-1080384-A (GB)
Title: Control of nuclear power reactors
IPC: G21C7/22
Filed: 1965-07-16
Abstract: 1,080,384. Controlling reactors. ATOMIC ENERGY OF CANADA Ltd. July 16, 1965 [Aug. 31, 1964], No. 30335/65. Heading G6C. A reactor, shown in vertical cross-section in Fig. 1, comprises a cylindrical core 2 traversed by horizontal fuel tubes 3 and is controlled by neutron absorbing fluid disposed at discrete positions 9 within hollow vertical rods 8 traversing the core. The arrangement of three rods 8, shown, occurs at three spaced intervals along the length of the core to provide a total of nine rods (Fig. 2, not shown), the central rod of each group containing three positions 9 and the outer rods containing two positions. In an embodiment (Fig. 3, not shown) each position 9 is filled with a neutron absorbing liquid comprising boric anhydride and D 2 O, the level of the liquid being controlled to vary the reactivity. In another embodiment (Fig. 4, not shown) the reactivity is varied by adjusting the relative proportions of the boric anhydride and D 2 O. In a further embodiment (Fig. 5, not shown) the positions 9 are filled with helium<SP>3</SP> gas, the gas pressure being varied to vary the reactivity. An automatic control may be provided (Fig. 6, not shown) by using signals from flux detectors mounted in the core adjacent the rods 8, these signals controlling valves which determine either the liquid level, the liquid concentration, or the gas pressure.
Patent GB-1313031-A (GB)
Title: Gas analyzer
IPC: G01N1/24
Filed: 1971-06-29
Abstract: 1313031 Gas analysis COMBUSTION EQUIPMENT ASSOCIATES Inc 29 June 1971 [30 April 1971] 30400/71 Headings G1B and G1N A gas analyzer for measuring the quantity of pollutants e.g. SO 2  in air by measuring the conductivity of a fluid in which the air is dissolved includes means for accurately sampling a predetermined quantity of air. A chamber 22 partially filled with acidified hydrogen peroxide solution 74 is mounted in a portable container. Plunger 18 biased by constant energy spring 24 is depressed so that piston 28 moves downwardly in chamber 22, air being expelled from the chamber first via supply tube 21 in communication with the atmosphere and thence through valve 39 as valve ball 37 is forced upwardly from its seat 35 by upwards biased rode 41. On further depression of the plunger 18 and piston 26 block 56 suspended from piston 28 by conducting rods 68 moves into the position shown in phantom when rod 61 engages post 71 to drive piston 58 upwards to flush any fluid remaining in the fluid cell defined by bore 57 in block 56. Plunger 18 is now released and initially the piston rises rapidly, as air passes through 39, until rod 41 no longer contacts ball 37 and valve 39 closes. During this period piston 58 moves downwards to define the fluid cell and allow it to pick up fluid from solution 74 as the piston 38 subsequently returns to the position shown at a controlled rate dependent upon the dimensions of tube 21, through which air now flows into the chamber, constant energy spring 24 and friction between piston 28 and the walls of chamber 22. As the piston 28 rises a jet of air is delivered to the fluid in the fluid cell so that any SO 2  present in the air dissolves in the fluid to form solution of sulphuric acid. A potential is applied via leads 69, rods 68 to electrodes 67 in contact with the fluid in the cell and the resistance of the fluid measured to indicate the percentage of SO 2  in the sample. The piston 28 may be fixed and the chamber 22 movable in which case the downward movement of the chamber is under the control of gravity.
Patent GB-207831-A (GB)
Title: Improvements in or relating to coupling motors
IPC: F16D7/04
Filed: 1923-12-03
Abstract: 207,831. Tampier, R. J. C. Dec. 2, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Clutches, claw.-A coupling between a starting- motor and an engine, which is disengaged if the engine turns backwards, comprises concentric members 1, 5 connected to the motor and the engine and pistons 3 sliding radially in the member 5 and held by springs 4 in engagement with recesses 2 in the member 1, which is driven from the starting-motor through worm or other gearing. If the engine turns backwards, the pistons 3 are disengaged by the inclined ends of the recesses 2. A breakable pin 6 connects the member 1 to its toothed rim and breaks if the pistons 3 fail to disengage.
Patent GB-1507594-A (GB)
Title: Electrolytic treatment of metal sheet
IPC: C25D17/06
Filed: 1976-07-21
Abstract: 1507594 Supporting sheet metal in electrotreatment WAI KWANG SHANG 1 July 1977 [4 Oct 1976] 30436/76 and 41114/76 Heading C7B [Also in Division F2]  Ferromagnetic sheets are conveyed in contact with the surface of an electrotreatment bath (Cr, Sn or Zn plating, degreasing or pickling) by a series of rollers to the undersides of which the sheets are held by permanent or electromagnets. As disclosed Ti or stainless steel tubular rollers contain barium ferrite magnets between soft iron armatures. A stainless steel or Ti endless strip may intervene between the sheets and rollers to prevent electrolyte contact. The rollers or strip may be electrically connected. A roller spacing less than 1/3 the length of a sheet is used.
Patent GB-177560-A (GB)
Title: Improvements in record holders for talking machines
IPC: A47B81/06
Filed: 1920-10-29
Abstract: 177,560. Hughes, G. N. Oct. 29, 1920. Contents, delivering.-In a gramophone record cabinet A containing holders B in which a number of grooves or slots are arranged for the reception of the records which are ejected by keyactuated levers against which, when in position, they abut by gravity, each lever 29 is pivoted unequally as regards its ends, the short end being in contact with a slidable rod 34 actuated by a key 39. When a key is depressed to eject a record, the centre of gravity of the lever is displaced from one side of the pivot to the opposite side so that the lever and key remain in thisdisplaced position until the record is returned. The record holder B carrying the levers &c. comprises side members 10 connected at the front and rear by inverted U-shaped members 18, 11, the undersurface of the transverse part of the member 18 and the front surface of the transverse part of the member 11 having a series of corresponding grooves 20, 12 for the reception of partitions 25, 27 separating the records which rest in grooves 22 in a bottom wall 21 fixed to the member 18; the bottom ends of the partitions 25 are received in grooves at the front of the wall 21. The partitions 25, 27 are covered with baize or other soft material 28. The ejecting levers are mounted on a rod 30 extending through. orifices in projections 13 on the members 10 at the front of which an inclined keyboard 16 is fixed. The keys 39 extend through apertures in the keyboard and pins 40 at their lower ends engage orifices in recesses 36 in the ends of the rods 34. The upper and longer arm of each ejecting-lever has a central groove in the front and a U-shaped member 32 having a lining 33 of felt &c. for engaging the record, is fixed to the upper end. A stop member 44 limits the rearward movement of the ejecting-levers.
Patent GB-856334-A (GB)
Title: Method for separating n-hydrocarbons using molecular sieves
IPC: C07C7/13
Filed: 1959-09-08
Abstract: In the separation of straight chain hydrocarbons from mixtures thereof with other hydrocarbons by contacting in the liquid phase with a molecular sieve which selectively absorbs straight chain hydrocarbons, the sieve is desorbed by contacting with a straight chain hydrocarbon having a higher boiling point than any component of the feed mixture in the liquid phase.  Preferably after the absorption step non-absorbed liquid is removed from the sieve by a strippant liquid which differs in boiling point both from the feed and the desorbing liquid and which is itself not absorbed on the sieve.  In order to separate both n-olefines and n-paraffins from a feed, two beds of sieve are used olefine being absorbed in the first and desorbed by a higher olefine and paraffin being absorbed in the second and desorbed by a higher paraffin.  Reference is made to the separation of n-heptene andt n heptane from toluene, desorption being effecedrespectively by n-dodecene and n-dodecane with cumene being used as the intermediate strippant liquid.