baber/WOPTO huggingface dataset:
Patent GB-261243-A (GB)
Title: Improvements in or relating to metal-planing machines
IPC: B23D13/00
Filed: 1926-03-20
Abstract: 261,243. Redman & Sons, Ltd., C., and Binns, R. March 20, 1926. Planing. - In a double-cutter tool-holder for planing-machines the pivots about which the holder is oscillatable are relieved from strain. A double-edged tool is secured by screws f in a cylindrical sleeve e rotatable within a block d mounted on pivots c carried by a U-shaped bracket a which is rotatably adjustable in the usual manner by arcuate T-slots b<2>. The block is oscillated about the pivots c to position the tool for each stroke by mechanical means (not shown), or by solenoids or other electrical means, the oscillation in one direction being limited by an abutment d engaging the bracket a and in the other direction by abutments d<2> engaging abutments a<2> on each arm of the bracket a. The contacting surface of the abutment d' is adjustable by means of a wedge j to vary the arc of swing and adjustable abutments are also provided on the block at h. The abutment d' has an arcuate surface d<4> which slides on a similar surface a<4> on the bracket to relieve the pivots of strain and the same object may be achieved by the addition of arcuate slots in the block engaging transverse pins on the bracket. The sleeve e is normally prevented from rotating on the block by a screw g, but oscillation of the sleeve on its own axis may be produced when the tool has lateral cutting edges, as for example when planing the bottom of a T-slot. The block d is then secured in its central position by means of a movable abutment k, locked by a screw l, and a screw m. The sleeve is oscillated through a pin or pins p by any mechanical or electrical device, the extent of the oscillations being limited by a collar e<3> on the sleeve having an arcuate recess whose ends are engaged alternately by a stop o fixed to the block d. When not required the sleeve e &c. may be omitted and the double-edged tool secured in an opening in the block d.
Patent GB-1390311-A (GB)
Title: Timed-release pharmaceutical preparations
IPC: A61K31/22
Filed: 1973-02-16
Abstract: 1390311 Sustained release propoxyphene napsylate ELI LILLY & CO 16 Feb 1973 [22 Feb 1972] 7790/73 Heading A5B A sustained release pharmaceutical preparation for oral administration comprises an extrudate of (a) up to 80% propoxyphene napsylate, (b) as excipient, microcrystalline cellulose, sucrose, dextrose, lactose, fructose and/or maltose and (c) as granulating agent partially hydrolysed starch, sodium carboxymethyl cellulose, methyl cellulose, hydroxypropyl methyl cellulose and/or polyvinyl pyrrolidone. The preparation may also include gelatinised starch. It may be prepared by mixing (a) and (b), adding an aqueous dispersion of (c), extruding the mixture through a perforated plate, breaking up the extrudate into particles and removing excess water. The extrudate may be broken up by tumbling it on a horizontal friction plate rotating within a stationary cylindrical wall.
Patent GB-685187-A (GB)
Title: Improvements in and relating to pyridylchlorosilanes
IPC: C07F7/16
Filed: 1951-04-04
Abstract: Organopolysiloxanes are obtained by hydrolysing di-(2-pyridyl) dichlorosilane alone or with other organohalogenosilanes, e.g. with dimethyl- or diphenyl-dichlorosilane or mixtures of dimethyldichloro- and methyltrichloro-silane.ALSO:Di-(2-pyridyl)-dichlorosilane is obtained by reacting silicon and 2-chloropyridine at temperatures within the range 250 DEG  to 500 DEG  C.  The reaction may be effected in the presence of copper or silver, or an alloy of silicon may be used.  Super-atmospheric pressures may be employed for the reaction.  One example is given.ALSO:Emulsifying agents comprise salts of di-(2-pyridyl) dichlorosilane.
Patent GB-249562-A (GB)
Title: Improvements in and relating to electric heaters
IPC: H05B1/02
Filed: 1926-03-22
Abstract: 249,562. British Thomson-Houston Co., Ltd., (Assignees of Kelly, W. D.). March 21, 1925, [Convention date]. Thermal switches; switches, quick-action.-A temperature regulator for electric irons &c. includes a snap-action switch consisting of a spring 30 which is connected to a link 33 by a member 32 adapted to be moved up or down by bi-metallic strips 19, the right-hand end of the link 33 being attached to a switch arm 23 pivoted at 29. When the temperature becomes too high, the strips 19 moving in unison press upwards a rod 31 adjustably connected to the member 32, so that the latter moves to a position above the arm 23 and the spring 30 causes the arm 23 to open with a snapaction. The switch is closed by a similar action when the iron cools down. To set the switch for different temperatures, the right-hand end of a member 27 carrying the pivotal supports for the switch arm 23, is raised by rotating a cam-shaped member 44 mounted on a sleeve 46. Contacts.-The switch arm 23 is pivoted at 29 in knife-edge bearings, and carries loosely at itsright-hand end a resilient bridging member 37<a> carrying contacts at its ends.
Patent GB-1503981-A (GB)
Title: Apparatus for processing thermoplastic materials
IPC: B29C48/38
Filed: 1975-02-25
Abstract: 1503981 Kneading plastics material L WITTROCK 25 Feb 1975 [25 Feb 1974] 7913/75 Addition to 1405672 Heading B1C [Also in Division B5] The apparatus of the main patent is modified by embodying the compression and feeding means each as a single screw 2, 8 having a pitch which is larger than the screw diameter and a channel depth of at least 15% of the diameter. The plasticizing means may be a rotor 5 having projections 6, the total area of the rotor including projections not exceeding 80% of the contacted inner wall of the housing. The exit channel of the plasticizer may have an adjustable throttle which may be provided by a conical portion of the axially adjustable rotor shaft. The apparatus may be provided with pressure and temperature measuring device operating means for automatic control.
Patent GB-433160-A (GB)
Title: Improvements in water cooled door and like frames for high temperature furnaces
IPC: F23M7/00
Filed: 1934-03-13
Abstract: 433,160. Furnace-door frames. SCHIELDROP, B. H., 88, Cassiobury Drive, Watford, Hertfordshire. March 13, 1934, No. 7920. [Class 51 (ii)] A water-cooled door frame comprises an upper box section 1<a> bevelled at its lower corners 1<e>, and having its lower wall 1<d> inclined downwards from back to front, and leg sections 2, 2<a> shaped at their upper faces to fit the corresponding parts of the upper section. All the sections have projecting portions 1<b>, 5, 5<a> at their edges to provide a face recess in which the door or damper 4 slides. In assembling the structure the upper section is first positioned by means of an angle bar 1<g> attached to its upper edge, and the leg sections are raised on blocks 10 to contact with the lower face of the section 1<a>. The leg sections are then secured against movement by clamps 11, which are bolted to the buckstays and engage angle pieces 8 welded to the sections, while forward movement of the upper section is prevented by removable stops 12.
Patent GB-116150-A (GB)
Title: Improvements in Chain or Gear Cases.
Inventor: YOXALL HENRY SMALLWOOD
IPC: B62J13/04
Filed: 1917-06-02
Abstract: 116,150. Yoxall, H. S., and Richmond, R. H. June 2, 1917. Gear cases and chain guards.-In chain or gear cases of the kind wherein each shaft aperture is adapted to be closed by one or more plates 8, 9 surrounding the shaft 6 or 7 and disposed within a framework 12 on the casing, the framework is provided with separate means, such as set-pins 14, for pressing the plate firmly against the exterior of the casing. For preventing leakage of oil, the plate or plates are formed with an annular part 10 of U or equivalent section to carry a felt or like washer 11. As shown applied to the shaft 6 in Fig. 1, the plate 8 may be in halves, which are clamped around the shaft by screws and nuts 16. The framework 12 comprises two parts each formed by pressing out the inner portion 13 of a plate to provide a recess for the reception of the edge of the plate 8 or 9. The framework for, say, the plate 9 may be made longer than the plate, so that the shaft 7 can be adjusted in a slot in the case. In order that the plates may fit tightly against the unlevel surface of a case made in two parts 1, 2 with overlapping edges, over half of their inner surface the plates are cut away, as shown in Fig. 3, to a depth corresponding with the thickness of the metal of the case.
Patent GB-1040259-A (GB)
Title: Clamping means
IPC: F16B2/08
Filed: 1965-02-24
Abstract: 1,040,259. Pipe connections; supporting pipes. H. OETIKER. Feb. 24, 1965 [Nov. 24, 1964], No. 7953/65. Headings F2G and F2P. [Also in Division E2] Means for clamping one member to another comprises a ring or band provided with two or more outwardly-directed bulges disposed closely adjacent to each other and being compressible to reduce the diameter of the ring or the length of the band to cause the ring or band to press one of the members tightly against the other. As shown, the clamping means is in the form of a continuous strip having one or more pairs of folds 2, 3, Fig. 1, or a slotted strip, the free ends of which are joined by a connecting strip 15, Fig. 7a, or a strip 30, Fig. 10, the free ends of which are attached to a support 32 for a pipe or cable 33. The folds which are compressed by pliers or pincers may be formed with grooves or ribs 14, Figs. 4a, 4b (not shown).
Patent GB-1377351-A (GB)
Title: Miniature tape cartridges
IPC: G11B23/04
Filed: 1973-02-19
Abstract: 1377351 Tape cartridges VICTOR CO OF JAPAN Ltd 19 Feb 1973 [26 Feb 1972(2) 31 March 1972] 7973/73 Heading G5R A half-size cartridge 10 is provided on its rear wall 13 with a tongue 26 and groove 20 so that it may be joined back-to-back to a similar cartridge by tongue-and-groove joints. The pair then has overall dimensions approximately equal to a conventional cartridge and can be inserted in the slot of a conventional cartridge player to play the innermost cartridge, FigsÀ 6, 7 (not shown). The groove 20 is defined by a flange 23, which has an internal projection (28), Fig. 2 (not shown), for co-operation with a recess (27) in the mating tongue 26. The groove 20 is also provided with lead-in slot 21 having a tapered portion 22, so that the cartridges are interengaged by a sideways sliding motion. A handle (32) Fig. 8 (not shown), is also provided for manipulating single cartridges, and has tongues (33c, 33d) co-operable with the cartridge groove 20. The handle (32) may also be fitted across a cartridge front wall 12, Fig. 10 (not shown), to protect exposed tape.
Patent GB-374931-A (GB)
Title: Improvements in and connected with rudders for boats and ships
IPC: B63H25/38
Filed: 1931-03-16
Abstract: 374,931. Rudders and rudderposts. PICKERSGILL, W. J., Thornhill Tower, Thornhill Park, and PICKERSGILL & SONS, Ltd., W., Southwick, both in Sunderland. March 16, 1931, No. 8062. [Classes 113 (ii) and 114.] The rudder 1 is provided with a faired extension 7 of substantially U- section to reduce the space between the rudder stock 4 and the rudderpost 8. The latter is also faired by forwardly extending fins 18 of U- or V-section attached to it. The fin 7 is closed at the top and bottom by plates 9. The width of the post 8 is slightly less than the width of the front of the fin 7. Plates 22 close the ends of the fins 18 in proximity to the boss.
Patent GB-1222993-A (GB)
Title: Process for recovery and purification of acrylate and methacrylate esters
IPC: C07C69/54
Filed: 1968-02-20
Abstract: 1,222,993. Ethyl acrylate. STANDARD OIL CO. 20 Feb., 1968 [20 March, 1967], No. 8125/68. Heading C2C. [Also in Division B1] Ethyl acrylate is separated from ethyl alcohol, acrylonitrile, acrylic acid, diethyl ether, and beta ethoxy ethyl propionate (BEEP), as present in the reaction product from the synthesis of ethyl acrylate from acrylonitrile and ethyl alcohol, by submitting the mixture to distillation in a system comprising four fractionating columns. The bulk of the ether is removed from the head of the first column; and a mixture containing acrylic acid and BEEP is withdrawn from the base. A sidestream from the first column, comprising ethyl acrylate, ethyl alcohol, acrylonitrile and residual ether is distilled in an extractive distillation (extrillation) column while introducing water into the upper portion of the column; the vapours passing from the head of this column are condensed to give a condensate which is passed to a decanter where it separates into an aqueous phase and an organic (i.e. acrylic ester) phase, and organic phase is distilled in a further column, which contains an internal decanter, to obtain ethyl acrylate as bottoms fraction. The ethyl acrylate may be further purified, if desired, by passing it over a molecular sieve type desiccant, or by vacuum distillation. The mixture of ethyl alcohol and water withdrawn from the sump of the extrillation column is distilled, together with the ether from the first column, and the separated water is returned to the upper portion of the extrillation column. The aqueous phase from the internal decanter of the acrylic ester purification column is passed to the external decanter associated with the extrillation column, and the aqueous phase from the external decanter is introduced into the upper portion of the extrillation column.
Patent GB-345804-A (GB)
Title: Improvements in devices for re-winding the record carriers of magnetic dictating machines
IPC: G11B15/28
Filed: 1930-03-13
Abstract: 345,804. Winding webs. KLAPPENECKER, W., 66, Wrangelstrasse, and TELEGRAPHIE - PATENT - SYNDIKAT, GES., 119B, Potsdamerstrasse, both in Berlin. March 13, 1930, No. 8163. [Class 100 (i).] In apparatus for rewinding magnetic sound record carriers and the like from one spool to another wherein a brake is applied to the et-off spool or spindle provision is made for reducing automatically the braking action as the speed of the let-off spool increases consequential on the decreasing diameter of the carrier on the spool. This is effected by centrifugal action on spring-controlled braking elements. The take-up and let-off spools S<1>, S<2>, Fig. 2, for the magnetic wire or band D are secured to spindles A extending down into a casing G and mounted by balls l, Fig. 5, in bearings reduced at the lower ends m on which pulleys R with an annular rib p are mounted by ball bearings O. The lower ends of the shafts A carry discs K secured by radial pins s<1>, s<2> normally retracted by a circular spring f as regards the let-off spindle but which can be projected by a pin s to engage lugs on the rib p of the pulley R as regards the driving spindle. The discs K carry a pair of pivoted and spring- controlled brake levers h<1>, h<2>. Fig. 4, whose short ends bear against the ribs p. The pulleys R are connected by a belt R<1>, Fig. 2, running over a driven pulley S, and the brake levers carried by the spindle of the take-up spool bear against the ribs of the pulley R on that spindle with a pressure which decreases owing to centrifugal action on the levers as the speed of the spindle decreases.
Patent GB-434885-A (GB)
Title: Improvements in and relating to contacts for electric oil switches
IPC: H01H1/20
Filed: 1934-03-15
Abstract: 434,885. Oil-break switches. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. March 15, 1934, No. 8199. Convention date, March 15, 1933. [Class 38 (v)] Contacts.-A contact-bridge for an oil-switch has, for movement in the switching direction, rotatably and slidably mounted contact-levers d continually under spring pressure e, which levers carry movable contacts c co-operating with fixed contacts b and giving a rolling contact engagement. The levers d have their fulcrum f approximately at the middle of the bridge and are suspended between it and the contact c by spring-loaded plungers coacting with the channel-shaped cross bar h, which serves simultaneously as a guide in such manner that the levers d tend to be moved in a direction opposed to the movement of the bridge caused when opening the switch. The fulcrum may be an abutment f or a joint affording play to the levers d. The Figure shows the contacts about to engage or separate.
Patent GB-808435-A (GB)
Title: Bonding process
Inventor: COULTER DAVID JAMES BRYANS
IPC: C08J5/12
Filed: 1956-03-16
Abstract: A process for bonding polythene to substrates is characterized by the interposition of a vulcanizable blend of natural or synthetic rubber and polythene between the polythene and the substrate, and by the vulcanization of this blend during the bonding process, e.g. by heating in a press at 141 DEG  C.  The vulcanizable blend preferably contains between 40 and 60 per cent of polythene.  The polythene preferably has a molecular weight greater than 13,000.  The blend may be made by blending at a temperature about that of the melting point of the polythene.  A curing agent (e.g. sulphur) and, if desired, other ingredients commonly used in the compounding of vulcanizable rubber blends are incorporated.  These include activators, accelerators, fillers, pigments and antioxidants.  The vulcanizable blend may be interposed between the polythene and the substrate in solid form, e.g. as a layer thereof, or it may be painted on as a solution in a solvent, or both methods may be used in combination.  A known bonding agent (e.g. 4 : 41 : 411 - triisocyanatotriphenylmethane or other isocyanates, phenol-formaldehyde condensates or rubber derivatives) may be used to bond the vulcanizable blend to the substrate.  The substrate may be a metal (e.g. mild steel, iron, brass, aluminium, copper), a textile fabric, leather, stone or a ceramic material. The process may be used for lining tanks, vats, pans or other vessels or in the production of electrical equipment.  When the substrate is a suitable fabric, a structure suitable for conveyer belting for the conveyance of corrosive or chemically active materials may be obtained.ALSO:A vulcanizable composition comprises a blend of natural or synthetic rubber, e.g. a butadiene-styrene copolymer, and polythene.  The blend preferably contains between 40 and 60 per cent of polythene.  The polythene used may be any solid polymer of ethylene made by a high- or low-pressure process.  The polythene preferably has a molecular weight greater than 13,000.  The blend may be made by blending at a temperature about that of the melting point of the polythene on standard rubber-mixing machinery for example on an open mill or on a Banbury mixer. When the polythene and rubber have been blended, and the resulting blend cooled, there is incorporated therein a curing agent (e.g. sulphur) and, if desired, other ingredients commonly used in the compounding of vulcanizable rubber blends.  These include activators, accelerators, fillers such as china clay, pigments and antioxidants.  The composition may be interposed between polythene and various substrates (see Group VIII) either in solid form, e.g. as a layer thereof, or it may be painted on as a solution in a solvent, or both methods may be used in combination. The composition is then vulcanized to join the polythene to the substrate.
Patent GB-1380966-A (GB)
Title: Plasma torches
IPC: H05H1/28
Filed: 1972-02-23
Abstract: 1380966 Plasma torches ELECTRICITY COUNCIL and G T DYOS 20 Feb 1973 [23 Feb 1972] 8302/72 Heading B3V [Also in Division H5] The plasma constricting tube of a plasma arc torch is formed in a porous body 18 and is cooled by water forced through the pores from annular chamber 20 to evaporate on the walls of the tube. The conventional water-cooled cathode 15 may be positioned in a tapered water-cooled chamber as shown or in an enlarged water-cooled chamber (Fig. 2, not shown) with replaceable pieces (176) guiding the plasma so that the size of the constrictor tube may be altered at will. The porous body 18 is of ceramic material or sintered metal with pore sizes between 1.5 and 1500 microns.
Patent GB-751525-A (GB)
Title: Method of and apparatus for the continuous manufacture of light-weight concrete in block form
IPC: B28B1/50
Filed: 1954-03-22
Abstract: 751,525. Making lightweight concrete blocks. SKOVDE GASBETONG AKTIEBOLAG. March 22, 1954 [March 25, 1953], No. 8321/54. Class 87(2) A method for the continuous manufacture of lightweight concrete blocks comprises pouring expansible concrete mix on a conveyer, supporting the. mix between walls moving with the conveyer, allowing the concrete to expand and set, and cutting the concrete stream into blocks. 'The vertical side belts 2 may be carried along with the concrete by friction or geardriven from the drive pulley 3 of the horizontal belt 1. The belts are of steel, or in the case of the belts 2, of linked metal plates. The trough-like space enclosed by the belts may be covered by an insulating housing 10 in which heating or cooling, devices may be fitted. Lightweight concrete is fed into a hopper 5 but kept from accumulating on the belt 1 by a gate by which the opening from the hopper may be regulated. At the commencement of the operation, before the gate is opened, an end wall is placed in front of the opening and fixed to the belt 1, and when the machine is started and the gate is opened this end wall supports the front of the concrete mass till it has set and is removed at the discharge end. The concrete passes between vertical wires in a frame 8, which reciprocate to cut it into lengths parallel to the direction of movement, and then under a knife 9 which is reciprocated by an eccentric to cut the lengths into blocks. The top of the concrete is levelled by a scraper at the discharge end. As the belts return over their pulleys they are cleaned by brushes or scrapers 15, which may be combined with water sprays. Felt packing soaked with oil, behind the rear wall of the hopper, lubricates the belts just before the concrete is deposited.
Patent GB-1345294-A (GB)
Title: Glass-ceramic articles
IPC: C03C10/16
Filed: 1972-02-23
Abstract: 1345294 Glass-ceramic CORNING GLASS WORKS 23 Feb 1972 [24 Feb 1971] 8331/72 Heading C1M A glass ceramic article which comprises tetrasilicic mica crystals dispersed in a glassy matrix, the crystals constituting at least 50% by volume of the article, is produced by crystallization in situ of a glass body comprising in weight per cent 45-70 SiO 2 ; 8-20 MgO; 8-15 MgF 2 ; a total of 5-35 (R 2 O+RO), wherein R 2 O is present in an amount of from 5-25 and consists of at least one oxide selected from 0-20 K 2 O, 0-23 Rb 2 O and 0-25 Cs 2 O; and wherein RO is present in an amount of from 0-20 and consists of at least one oxide selected from SrO, BaO and CdO; a total of 0-10 As 2 O 5  and/or Sb 2 O 5  and a total of 0-5 glass colourants. The glass colourants may be K 2 Cr 2 O 7 , KnO 4 , NiO, CuO, Fe 2 O 3 , FeO, V 2 O 5 , CoO, Nd 2 O 5  and/or elemental Au. The crystallization is carried out at a temperature of between 650 and 1200 C. Preferably, the glass is exposed to a temperature of 750 to 850 C. for 1-6 hours and then to a temperature of 1000 to 1150 C. for 1-8 hours. The article may be translucent or opaque.