baber/WOPTO huggingface dataset:
Patent GB-251472-A (GB)
Title: Valve
IPC: F16K15/08
Filed: 1925-07-02
Abstract: 251,472. Marks, E. C. R., (Ingersoll-Rand Co.). July 2, 1925. Casings; dashpots, applications of.-A valve for compressors and the like which comprises an annular valve D with a stop plate and guide ring K is provided with a co-extensive annular fluidcushioning chamber to cushion the valve both on opening and closing. A small clearance between the sides J of the valve D and the guide ring K permits leakage of the cushioning fluid as the valve rises or falls. Springs may be used to close the valve. An adjustable apertured plug b cooperating with an apertured disc a, Fig. 9, varies the leakage. Non-return valves may be fitted in the guide ring K to give a strong cushioning in one direction or the other. The valve ports are formed with rounded contours converging to a throat at the valve. Adjustment of the valve lift is obtained by means of washers P between the guide rink K and the seat member.
Patent GB-829731-A (GB)
Title: Improvements in multiple purpose domestic grating or slicing machines
IPC: A47J43/25
Filed: 1958-05-29
Abstract: 829,731. Slicing machines. BRAUN, E. P. R., and BRAUN, A. H. K. May 29, 1958 [May 31, 1957 ; June 21, 1957], No. 17136/58. Class 5(1). [Also in Group VI] A grating or slicing disc 11 is mounted between a cover 19 and a casing 1 which assembly is slid down on a coupling sleeve 12 of a shaft 10 driven by reducing gears 3 to 6 mounted within a core 2 which is pressed down on the main casing of an electric drive so that the coupling 7 couples to the drive. The cover 19 is secured by a clip clamp 22. Fig 3 shows the grating or cutting disc provided with a rib 26 to sweep the cut material to an outlet 25. The hopper 23 is provided with a plunger 24.
Patent GB-756944-A (GB)
Title: Polyvinyl resin jointless flooring compositions
IPC: B32B27/00
Filed: 1953-06-22
Abstract: Flooring compositions giving a marbled effect when trowelled, comprise pieces of laminated sheet wherein the laminates are different coloured flooring compositions comprising an aqueous polyvinyl resin emulsion (e.g. polyvinyl acetate emulsion), a filler and a pigment.  The final compositions may be produced by rolling the individual flooring compositions one on the other and then slicing the composite sheet.  Unspecified emulsion stabilizers and plasticizers may also be present.
Patent GB-152727-A (GB)
Title: Improvements in and relating to electric light fittings
IPC: F21V21/16
Filed: 1919-07-09
Abstract: 152,727. British Thomson-Houston Co., and Wheat, H. C. July 9, 1919. Supporting.-An electric lamp, together with a metal housing 1 and a globe 4 is supported by a cable 9 and is counterbalanced by a reflector 7 which is hung by pulleys 8 from the cable which is passed round pulleys attached to the ceiling plate so that, when the lamp is lowered, the reflector rises. Specification 3554/99 is referred to.
Patent GB-612924-A (GB)
Title: Improvements in and relating to magnesium-base alloys
IPC: C22C23/00
Filed: 1946-06-06
Abstract: Magnesium-base alloys of low density, high ductility and good tensile strength comprise 1-12 per cent lithium, 0.5-12 per cent aluminium, not over 0.1 per cent sodium and the balance magnesium with or without traces of impurities commonly associated with magnesium, lithium and aluminium.  Sodium which has a deleterious effect on the mechanical properties of the alloys, is preferably absent, and to ensure a sodium content not exceeding 0.1 per cent the alloys are prepared by melting the magnesium under a flux of one part lithium fluoride and three parts lithium chloride, and then adding the aluminium and lithium, the latter being held under the surface of the molten metal, as by an inverted perforated steel cap, and the temperature of 1300-1400 DEG F being used.  The alloys may be cold-rolled after hot rolling and are suitable for wrought fabrication; castings and rivets, whilst some of the alloys are susceptible to heat-treatment hardening.
Patent GB-121624-A (GB)
Title: Improvements in or connected with Carbon Brushes for Dynamo Electric Machines.
IPC: H01R39/36
Filed: 1917-11-23
Abstract: 121,624. Morgan Crucible Co., Knight, C. Y., and Wilson, W. N. Nov. 23, 1917. Drawings to Specification. Brushes.-In 'brushes of the type described in Specification 105,361, in which an insulating piece upon which the pressure finger bears is secured to the brush by means of grooves, holes, recesses, &c., which may be undercut, the insulating piece is made of some material which can be moulded in position whilst plastic and afterwards hardened. For example, fibre, vulcanite &c. may be applied to the brush in unvulcanized condition and vulcanized in situ.
Patent GB-292149-A (GB)
Title: Heating stoves
IPC: F24C3/00
Filed: 1928-06-15
Abstract: 292,149. Clarke, A. June 15, 1927, [Convention date]. Air-heating stoves; outlets to chimneys.-A stove adapted to supply hot air for heating purposes and designed to burn gas comprises a combustion chamber 14 with an air preheating chamber 7 below it and a hot air delivery chamber 13 above it, and includes an outlet baffle chamber 35 which may have means for extracting further heat from the hot gases. Air enters the chamber 7 from below and serves partly for combustion at the gas burner 18 and in part passes through heating pipes 30 to the chamber 13. Further air entering an open ended passage 26 within the chamber 14 is heated in pipes 29 exposed to the hottest part of the heating-chamber, the gases after passing these pipes being directed by a baffle 31 along the whole length of the pipes 30. The rear of the chamber 14 is spaced from the rear wall 24 of the casing to provide an air passage 45 delivering along the top and forwardly into the chamber 13. The waste gases leaving the stove enter a retarding casing 35 beneath a perforated plate 40 therein and rise upwardly between a number of vertical partitions to issue past a top baffle 42. A modified retarding casing may be built into the stove, affording additional airheating surfaces, and having the object of reducing the waste gases to a temperature at which they can safely be exhausted into the apartment to be heated.
Patent GB-140681-A (GB)
Title: Improvements in or relating to lathe bodies
IPC: B23Q1/00
Filed: 1919-07-12
Abstract: 140,681. Drummond, A. July 12, 1919. Machine framings. - Lathe beds are connected to their legs by bolts passing through slots b, d in the two parts that cross preferably at right-angles, so that accuracy in manufacture is not necessary. The tops of the legs are formed with narrow ledges to support the bed.
Patent GB-859513-A (GB)
Title: Improvements in tea rolling apparatus
Inventor: WORTHINGTON WILLIAM ROBERT
IPC: A23F3/12
Filed: 1958-06-03
Abstract: 859,513. Disc mills. MARSHALL'S TEA MACHINERY CO. Ltd. July 31, 1959 [June 3, 1958], No. 17665/58. Class 59 [Also in Group VI] In a tea rolling machine, tea leaf is fed into the gap between two plates 1, 2 with roughened surfaces facing one another, at least one of the plates being shaped so that the gap therebetween is least at the edges and one of the plates having an eccentric motion about an axis perpendicular to the plates. As shown, plate 1 is flat and horizontal having a central stud 4 and being mounted on crank shafts 6. Each shaft 6 comprises a pin 8 and a shaft 7 connected by a web 9, pins 8 and shafts 7 being received respectively in ball bearings 10, 12 and 13 mounted in the underside of plate 1, in the machine base 14 and in a housing 15. One shaft 7 is driven through bevel gearing from an electric motor. Plate 2 is annular with a central tubular portion 19 secured to the lower end of a feed tube 21 rotatably mounted in bearings 25, 26. Portion 19 has a collar 30 with a toothed annulus 31 meshing with pinion 32 driven through gearing, e.g. by the previously mentioned electric motor. A worm 55 is secured to the lower end of a shaft 40 mounted in bearings 41, 42 within and coaxial with tube 21 and has a projecting upper end carrying a driven toothed wheel 43 rotatably mounted thereon and situated between two circular clutch plates 44, 45 respectively fixed to and non-rotatably slidable on shaft 40. A spring 46 is mounted between plate 45 and a disc 47 secured to the upper end of shaft 40 and a further spring 59 is arranged between plate 44 and a bearing 61 encircling tube 21 to support the weight of plate 2, tube 21 and their attachments. A spring 60 maintained under compression by a collar 62 held against it by a toggle mechanism holds plate 2 down against the action of spring 59. If plate 2 is forced upwards in excess of a predetermined amount, the toggle mechanism frees collar 62 and the whole assembly is lifted by spring 59. In use, a hopper 56 surrounding tube 21 is filled with tea leaf which enters tube 21 through an aperture 57 by a leaf compacting worm 58 secured to the outer surface of feed tube 21 and, after passing through the machine, the tea leaf is received in a trough 72 with paddles 74 carried on plate 2 which push the leaf into a shoot 73. In a modification, Fig. 2 (not shown) plates 1 and 2 are vertical instead of horizontal.
Patent GB-467534-A (GB)
Title: Double-acting jacks
IPC: B66F3/10
Filed: 1936-06-25
Abstract: 467,534. Lifting-jacks. HAFERKORN, H. O., HOBSON, C. E., and HAMLIN, R. E. June 25, 1936, No. 17717. Convention. date, Jan. 16. [Class 78 (iii)] Multiple screwjacks of the kind in which two telescoping oppositely - threaded screws are operated by a common actuating member, are fitted with special means for preventing rotation of the upper screw. In the illustrated form, two oppositely - threaded hollow screws 12, 19 are used, of which 12 is fixed to the base while 19 carries the lifting-lead 21, while a tubular member 14 forming the casing and housing the screws in the collapsed position, is fitted with nuts at each end engaging the screws and is rotated by ratchetmechanism 42, 44. The latter includes a reversible spring-mounted pawl 47, Fig. 4, for turning the member 14 in opposite directions. To prevent the upper screw rotating, it is fitted with pins 29 projecting between the legs of a U-shaped member 27 over which it telescopes. A cross-bar 36 near the base of the member 27 is guided in a slot in a member 33 fixed to the base. The crutch member is provided with stepped seatings for engaging various sizes of bumper-bars or other parts of motor vehicles and the upper surfaces 24, 241 of the seatings are slightly rounded to allow slight tilting of the bar without tipping of the jack. In the collapsed position, the tube 14 and members 10 and 21 form a closed compartment for the two screws.
Patent GB-334867-A (GB)
Title: Gearing for the individual drives for rollers and the like
IPC: F16H1/20
Filed: 1929-06-10
Abstract: 334,867. Tacke Maschinenfabrik Komm.-Ges., F. Jan. 8, 1929, [Convention date]. Motors, gearing for.- In a reduction gear for the electric drive of rollers, calendars drums &c. particularly of the hollow type wherein hot or cold gases or liquids may circulate. the gear casing, which also supports the motor is journaled on the roller shaft which carries the outermost gear wheel. As shown a divided casing 20 is hung from a hollow roller shaft 17. An electric motor 11 is attached with the interposition of a bearing-forming member 22 to the lower part of the casing and drives the roller through spur gearing 12, 14, 15. The shaft 27 may be extended through the casing to take off an intermediate speed. The casing is split vertically through the axes of the gear shafts, or otherwise, and has screwed to it undivided cover-rings 31, which as shown in Fig. 4, may bear directly on the boss of the wheel 15. The casing is further supported by a bolt 25 attached to a lug on the casing and to the fixed frame 30.
Patent GB-1494794-A (GB)
Title: Disc brake
IPC: F16D55/00
Filed: 1975-04-29
Abstract: 1494794 Sliding caliper disc brakes BENDIX CORP 29 April 1975 [20 May 1974] 17802/75 Heading F2E A sliding caliper 38 is mounted on a fixed support 22 by a pin assembly 60, 56 connected to the caliper and received in a socket 54 in the outer edge of one arm 24 of the support, the caliper having a bearing surface 76 normally spaced by a distance X from a complementary surface 74 on the inside of arm 24. Brake application with the disc rotating in direction A results in braking torque from the indirectly applied pad being transmitted to arm 24 via the caliper and pin assembly while torque from the directly applied pad 18 is transmitted directly to the other arm 28 of the support via abutting surfaces 32, 36. If the disc is rotating in the reverse direction surfaces 74 and 76 abut to transmit torque from the caliper to the support; spring 68 allows pin assembly 60, 56 to move partially out of the socket when this occurs. The caliper is prevented from rotating about the pin assembly during operation by a torque-in-groove sliding connection 80, 82 (having an interposed anti-rattle spring 84) which is releasable to allow the caliper to be pivoted for pad replacement.
Patent GB-568558-A (GB)
Title: Improvements in sketch pads
IPC: B42D15/00
Filed: 1943-10-28
Abstract: 568,558. Sketching pads. ELSDEN, H. E., and BURGOINE, S. F. Oct. 28, 1943, No. 17815. [Classes 11 and 16] A sketching pad comprises a base-board B, a pad of sketching sheets A attached to one edge of the board and a number of graph sheets C ruled to different scales interposed between the sheets A and the board B, each graph sheet being folded and secured at the free edge of one of its leaves, the other leaf being free so as to be capable of being inserted beneath the top sheet' A. The sheets A are sufficiently transparent to allow the lines of the sheet C to be seen therethrough and the scales of the rulings on the various graph sheets, three of which are shown, vary. A portion of the upper leaf of each graph sheet adjacent to its fold may be cut away to expose a portion of the leaf below on which the scale of the rulings is indicated. Alternatively, tabs may be attached to the sheets for this purpose. Also the upper leaf may be connected to the lower leaf by a flexible hinge strip. The sheets C may be attached to the same edge of the board B as the sheets A, or to one of the edges perpendicular thereto.
Patent GB-560400-A (GB)
Title: Improvements in means for electrically indicating at a distance the condition of theflame of a railway signal or like lamp
IPC: B61L5/18
Filed: 1942-12-15
Abstract: 560,400. Lamp failure alarms. JAMES, T. E. B., LAMP MANUFACTURING & RAILWAY SUPPLIES, Ltd., and LINLEY ENGINEERING CO., Ltd. Dec. 15, 1942, No. 17817. [Class 118 (ii)] [Also in Group XXXVII] A lamp-failure alarm comprises a normallyclosed thermal switch mounted between annular plates 8, 9 spaced apart by ferrules 10 to form a frame suspended by screws 7 from the lid 1 of a lamp, such as that described in Specification 510,814, [Group XI]. A pair of arcuate levers 12, 13 are pivoted on pins 14, 15 so as to lie between, and rotate in the plane of, the plates 8, 9 from which they are spaced by washers or a grub screw 17, plates 18 holding the pins 14, 15 in place. The short arm of each lever receives a thrust bearing 19 in a threaded hole, the arm being bifurcated by saw-cuts extending to the hole and the bifurcations screwed together at 21 to secure the bearings. The heatsensitive member 20 carries coned ends engaging the bearings, whereby the thrust of a spring 26 on lever 12 is transmitted to lever 13 to force the latter into engagement with an adjustment cam 28, whilst allowing the contact 23 on lever 12 normally to engage an adjustable fixed contact 24 and maintain the alarm circuit closed. The cam 28 has trunnions of which one 29 has a tommy hole or is otherwise adapted to be adjustable, whereas the other 30 has a lock nut 31 for securing the cam in the position indicated by a pointer 32 and scale. Specification 503,553, [Group XXXVII], is referred to.
Patent GB-879219-A (GB)
Title: Internal combustion engine
IPC: F02F7/00
Filed: 1960-05-20
Abstract: 879,219. Engine construction, mounting engine accessories. PORSCHE, F. A. E. May 20, 1960 [June 6, 1958], No. 17827/60. Class 7(2). An engine comprises a cast housing 2 which is made torsionally rigid by the assembly thereto of an oil sump 3 and end plates 5, 15. A crankshaft 1<SP>1</SP> drives a cam-shaft 26 and a cooling air blower 32 by a gear train 28 ..... 31 mounted between the end plate 5 and a cover 30. Mounted on an extending portion of an end plate is a generator and/or a starter motor which drives a flywheel 24 through a gear-wheel 23. A vehicle suspension bracket 35 may be secured by studs 34 screwed into the oil sump 3 and the housing 2.
Patent GB-1379151-A (GB)
Title: Rotary cutter for excavation especially for use with raise boring  and tunnel boring machines
IPC: E21B10/52
Filed: 1972-04-18
Abstract: 1379151 Roller cutters KENNAMETAL Inc 18 April 1972 17904/72 Heading E1F A rolling cutter for the cutting means of a tunnelling machine has a shaft 10 provided with spaced bearings 18 confined between end members 12 that are fixed to the shaft and a rotary cutting member 24 surrounding the shaft and disposed between the end members and supported on the bearings. This cutting member 24 is generally cylindrical arid has an outwardly projecting annular rib 26 in the axially central region of the member. The rib is provided with radial bores 28, 30 in which are hard metal inserts 32, e.g. tungsten carbide inserts, are secured. These bores are arranged in two sets, the axes of the bores of one set being located in a plane which is on one side of the axially central plane of the rib and parallel to said central plane whilst the axes of the bores of the other set are located in a plane which is on the other side of said central plane and is parallel to the central plane. Each of the inserts has a major portion thereof on 'the respective side of the central plane and a minor portion on the other side of the central plane. Preferably the rib is of V-shaped cross section, the inserts are rod like and with outer ends conforming to surfaces of the rib.
Patent GB-188024-A (GB)
Title: Improvements relating to telephone systems
IPC: H01H50/54
Filed: 1921-07-01
Abstract: 188,024. Creed & Co., Ltd., and Lenaghan, T. July 1, 1921. Relays. - Under the influence of a weak current the armature 26 operates a stop 24 to close the front contact springs, but it is only when the relay is fully energized by a stronger current that it is enabled to operate a second stop 25, nearer the spring support block 28, to open the back springs.
Patent GB-1256129-A (GB)
Title: Improvements in feed or discharge collector rings for thrust nozzles or combustion chambers of rocket propulsion units
IPC: F02K9/64
Filed: 1969-04-08
Abstract: 1,256,129. Making rockets; soldering. MESSERSCHMITT-BOLKOW BLOHM G.m.b.H. 8 April, 1969 [18 April, 1968], No. 17965/69. Headings B3A and B3R. [Also in Division F1] The invention relates to a liquid propellant rocket unit and to an annular manifold through which liquid propellant is supplied to or received from propellant flow passages formed in the wall of the rocket combustion chamber and/or propulsion nozzle for cooling thereof. The manifold is formed with a cavity extending around the whole periphery and is formed in the surface which faces the wall of the combustion chamber or nozzle with apertures or bores which correspond to apertures or bores in that wall. The propulsion nozzle shown comprises an inner wall 1 and an outer wall 2 which together define a series of propellant flow passages 3 which open to the outer surface of the wall through pairs of radial bores 4. A ring manifold 6 formed in two parts 6a, 6b and defining a peripheral cavity O is mounted at the downstream end of the wall 2, the inner portion 6a of manifold being formed with series of bores 9 which correspond to the bores 4 in the wall 2. Tube members 8 are disposed within the bores 9 and project into the stepped end portions of the bores 4 in the wall 2. The parts are secured together by a metal fusion process such as soldering or brazing. Propellant supply ducts 7 are secured to the manifold. The wall 1 is formed of copper with a series of ridges which are to define the propellant flow passages; the grooves between the ridges are then filled with an easily fusible material and the wall 2 then formed by an electro-deposition process, the filling material being then removed. The ring manifold is formed of material of high tensile strength such as steel. The tube members are loosely received within the bores 9 and are located by caulking the outer ends. A solder ring 11 is located in a recess 10 and upon fusion the solder fills the space 12 and the spaces around the tubes but cannot enter the tubes 9 or passages 3.
Patent GB-690631-A (GB)
Title: Improvements in or relating to sedimentation or settling tanks
IPC: B01D21/02
Filed: 1950-07-19
Abstract: 690,631. Gravity-separation apparatus. FILTRATORS, Ltd., and AITKEN, I.M.E. Oct. 19, 1951 [July 19, 1950], No. 18024/50. Class 46 In a settling tank in which the liquid flows upwards through a chamber of upwardly-increasing cross-sectional area the chamber is divided by one or more vertical or nearly vertical partitions into two or more sections between or amongst which the upward flow is distributed in sucn manner that a predetermined proportion of the total flow through the tank takes place through each section irrespective of the rate of flow of liquid through the tank. Liquid to be treated is delivered preferably tangentially into the upper end of a downwardly-expanding delivery passage F, Fig. 1, and flows radially outwardly beneath a ring-beam G between supporting pillars H. Some rises in an annular upwardly-expanding section Q within a circular wall J, Fig. 2, the supernatant liquid flowing through notches E<SP>1</SP> into radial collecting channels E which convey it to a peripheral trough D. The remaining liquid rises in the remaining section R between the wall J and the outwardlysloping wall B of the tank, the supernatant liquid flowing through further notches E<SP>1</SP> in the walls of the channels E and also through notches D<SP>3</SP> in the inner wall D <SP>2</SP> of the trough D. The maximum value of one of the horizontal dimensions at any location in each of the sections Q and R is preferably not greater than three-quarters of the average vertical height of the respective section to prevent eddying. Preferably also the distribution and dimensions of the notches E' and D<SP>3</SP> in relation to the sections Q and R are such that the upward velocity of the flow of liquid at approximately equivalent levels is the same in both sections. Sludge collecting in sumps L is drawn off by static head through pipes M, Fig. 4, each discharging by a spout M<SP>3</SP> into a trough N communicating at circumferential intervals with a trough O at ground level. The rate of discharge of sludge from the spouts M<SP>3</SP> may be varied by adjustment of a screw extension M<SP>2</SP> in a socket M<SP>4</SP>. The pipes M and M<SP>2</SP> are easily accessible for cleaning by a flexible rod. In an alternative arrangement a comparatively straight upper end portion of the sludge pipe may be connected to the rigid position by a knuckle joint. All the upper portions may be interconnected by a series of wire or rod links so arranged that when moved circumferentially the series of links causes simultaneous movement of all the upper portions to adjust the level of sludge discharge.