baber/WOPTO huggingface dataset:
Patent GB-196853-A (GB)
Title: Improvements in or relating to suction cleaning apparatus and attachments therefor
IPC: A47L5/32
Filed: 1922-08-10
Abstract: 196,853. Hoover Suction Sweeper Co., Ltd., (Hoover Suction Sweeper Co.). Aug. 10, 1922. Vacuum cleaning-apparatus.-In a vacuum cleaner comprising a casing moved over the surface to be cleaned, and having a removable floor plate or portion thereof to give access to the interior and permit connection of a hose, a detachable housing or flanged tray forms when secured to the casing an airtight passage between the rear apertured wall of the hood and the base of the fan chamber. Fig. 1 shows in inverted position a vacuum chamber supported on castors 18, 19 and having a suction hood with a brush 21 driven from the motor shaft; the hood is partly closed by a removable plate 14. This plate and the flaring side walls 17 of the hood form a chamber open at the back, through which it is connected to the fan chamber 10 by a removable conduit formed of a flat plate 25 with integral side walls 26 fitted to the suction hood by dowels. The conduit is provided with a tongue 30 with sloping edge held within a slot in the bracket casting 20 supporting the rear wheels by a wedge operated by a. pin 35. When a flexible hose is to be used, the conduit is replaced by a converter attachment comprising a hemisphere 40, Fig. 2, with a conduit 41 for the hose. This attachment is formed with flanged arms 43 carrying dowels 45 and with a tongue 47 fitting in the same positions as the corresponding parts on the conduit which it replaces; and is further formed with a base-plate 46.
Patent GB-740110-A (GB)
Title: A hand motor saw
IPC: B23D49/16
Filed: 1954-07-26
Abstract: 740,110. Sawing. SCINTILLA, Ltd. July 26, 1954 [July 25, 1953], No. 21786/54. Class 145 A hand motor saw is provided with a removable presser foot frame 4 on which a pair of serrated rollers 8 are mounted one on either side of the blade 3 so that the saw is suitable for cutting curved or corrugated sheet material. As applied to a reciprocating saw, the rollers are preferably mounted independently, with a common axis of rotation normal to the plane of reciprocation and intersecting the line of reciprocation of the saw teeth, and an adjustable backing roller is provided between the two rollers 8. A handle 11 may be mounted on either side of the saw with its axis parallel to the roller axis and intersecting the line of reciprocation of the saw teeth.
Patent GB-839625-A (GB)
Title: Improvements in or relating to engraving machines
IPC: B44B3/04
Filed: 1955-07-28
Abstract: 839,625. Copy-milling. CLIFFORD, T.W., SHENTON, A. E., and KAPELLA Ltd. July 27, 1956 [July 28, 1955], No. 21840/55. Class 83 (3). [Also in Group XVI] A machine for engraving workpieces of circular section comprises a tool holder D-carrying a tool E movable to and from a rotary workspindle C, means for causing movement of a follower G to produce rotary movement of the work-spindle-and movement of the tool holder axially of the work-spindle, and means for tilting a member T having a guide surface to constrain the tool to engrave the surface of a conical workpiece. The stylus G is carried on a parallelogram H hinged at H<SP>1</SP> to the frame A and at H<SP>2</SP> to the carriage D carrying parallel belt-, or motor-, driven cutter spindles E. The carriage D slides on balls J<SP>1</SP> on a shaft J, and is prevented from rotation by a pair of faces K<SP>1</SP> engaging a ball-race on a shaft K. The shafts are supported on the carriage B carrying work. spindles C, and supported on balls M<SP>1</SP> and a shaft M, rotation being prevented by rollers on a bracket P. Thus, movement of the stylus G transversely of the pattern F<SP>1</SP> moves only the carriage D, and longitudinal movement moves both carriages. The movement of the carriage B is converted into rotational movement of the workpieces by a steel tape S engaging drums R on the work-spindles C. Each cutter spindle is mounted in a sleeve E<SP>1</SP> urged upwardly by springs E<SP>2</SP>. The cutters are moved into engagement with the work by a pedal or hand-lever attached to a lever U carrying a series of adjustable stops T having guide surfaces engaging rollers E<SP>3</SP> on the sleeves. E<SP>1</SP>. The lever.'U is mounted on a vertically adjustable bracket V, which also carries a stop X to determine the lowered position of .the cutters.. Hence, by adjusting the bracket V and the stops T, X, axial movement of the cutter slide D will result in each cutter cutting to a predetermined depth along a conical surface, the semi-vertical angle of which is determined by.the. inclination of the surfaces on the stops T. The stylus may be carried directly on the cutter carriage. A pattern holder of the type described in Specification 839,624 may be provided.
Patent GB-1004897-A (GB)
Title: A process for producing highly stereoregular polymers of propylene
IPC: C08F10/06
Filed: 1964-05-27
Abstract: Polymers of propylene are made by effecting the polymerization of propylene in the presence of a catalyst formed by mixing a titanium trihalide with an aluminium dialkylhalide, and reacting the aluminium compound with water in an amount of from 0.02 to 0.5 mole per mole of aluminium compound after mixing with the titanium compound, or for a time of up to 60 seconds before mixing.  The catalyst may also be reacted with an aliphatic amine, e.g. triethylamine, having at least five carbon atoms in an amount of from 0.01 to 0.5 mole per mole of aluminium compound.  The polymers are at least 90% insoluble in isopentane.  The titanium trihalide may be beta or gamma-TiCl3.  The preferred aluminium compound is aluminium diethylmonochloride. The polymerization, and the recovery of the polymer is effected by known "low-pressure" techniques.
Patent GB-653413-A (GB)
Title: Improvements in or relating to television receiver synchronising circuits
Inventor: BEDFORD LESLIE HERBERT
IPC: H04N5/12
Filed: 1948-08-12
Abstract: 653,413. Automatic frequency control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 19, 1948, No. 21928. [Class 38 (iv)] [Also in Group XL (b)] In an arrangement for controlling the frequency of the local time-base oscillator in a television receiving system employing two different types of synchronizing pulses by means of a control signal derived by phase comparison of the oscillator output with received synchronizing signals the oscillator output is in the form of pulses of effectively shorter length than the synchronizing signals. With an arrangement of this kind the controlled oscillator does not go out of correct phase when the synchronizing pulses change from line to frame. In the described embodiment line and frame synchronizing signals of the kind shown at (a) or (f), Fig. 1, and which appear in the anode circuit of a valve V1 (Fig. 2), are modified by means of the network R2, C2 to have the shape shown at (e), Fig. 1, and combined with pulses of the form (b), Fig. 1, produced by a line-scanning blocking oscillator V4 (Fig. 2), and fed to a discriminator V2 which is arranged to conduct and to supply a control voltage viz., a cathode follower valve V3, to alter the frequency of the oscillator V4 when the phases of the combined signals differ only slightly but not to conduct when the phases differ widely (i.e. when changing from line to frame pulses).
Patent GB-1085914-A (GB)
Title: Polyolefine compositions
Inventor: CLARK KEITH JASPAR
IPC: C08F4/60
Filed: 1964-05-27
Abstract: A polymeric composition is made up predominantly from a polymer containing monomeric units of 4-methyl pentene-1, having a melt flow index of 0.01 to 1000 and containing up to 5% by weight of a polymer of a second component which is an aliphatic 1-olefine, the homopolymer of which melts above 275 DEG  C., said polymer of the second component being present in a quantity such that the polymeric composition has a mean spherulite size when compression moulded from 265 DEG  to 280 DEG  C. and then quenched, of not more than 5 microns. The composition preferably has an ash content below 0.02% and a light transmission of at least 90% in 1/8 -inch section.  The polymeric composition may contain up to 30% by weight of monomeric units of a third component which is a polymer of a linear 1-olefine having 4 to 18 carbon atoms e.g. butene-1, pentene-1, hexene-1, or heptene-1.  These third monomers may be added randomly to the polymerizable mixture. The two component polymeric compositions may be prepared by (1) sequentially polymerizing 4-methyl pentene-1 with the second component which is an aliphatic 1-olefine using a stereospecific catalyst, or (2) polymerizing the second component before any substantial quantity of any other monomer has been polymerized, e.g. in a preliminary stage, or (3) initially polymerizing 4-methyl pentene-1 or the linear 1-olefine in a small amount, subsequently polymerizing the second component, and thereafter polymerizing the bulk of the 4-methyl pentene-1, or (4) polymerizing 4-methyl pentene-1 and the second component together, until all the pentene is polymerized and subsequently polymerizing the second component. The polymerization is effected in the presence of a conventional " low pressure " catalyst such as TiCl3 activated by an organometallic compound.  Hydrogen may be present. De-ashing of the polymer slurry is carried out by known methods but dry reagents are preferably used.  Sixty-seven examples are given.  The second component may be 3-methyl-penten-1, 4,4-dimethyl pentene-1, 3-methyl butene-1, 3-methyl hexene-1, 3-ethyl pentene-1, or vinyl cyclohexane.
Patent GB-631380-A (GB)
Title: Improvements in or relating to electric discharge for receiving frequency-modulated signals
IPC: H03D3/32
Filed: 1946-07-24
Abstract: 631,380. Electron discharge apparatus. PHILIPS LAMPS, Ltd. July 24, 1946, No. 22011. Convention date, July 27, 1945. [Class 39 (i)] [Also in Group XL (c)] The invention relates to electric discharge tubes having two control electrodes and three screen grids, and which are adapted for demodulating a frequency-modulated signal and suppressing amplitude modulation, wherein two voltages differing in phase by an amount depending on the instantaneous frequency duration of the signal are fed to the control grids to affect the distribution of the electron current among the electrodes but not its total strength. Each control voltage causes the anode current to obtain full strength or zero strength according as it deviates above or below a predetermined level, so that the duration of anode current pulses depends on the phase relation between the two control voltages ; this condition usually obtains if the voltage of the control electrodes affects the distribution of the electron stream, but not the cathode current. According to the invention, the distance between each control grid and the subsequent, screen grid is smaller than that between the control grid and the preceding screen grid. In Fig. 5, suction grid 21 has a constant positive voltage to produce saturation of electron current from cathode 19. The electron beam is concentrated by rods 22. Screen grid 25 is situated between control grid 23 and grid 21 and a second. screen grid 25a is placed between the control grid 23 and a second control grid 24. A screen grid 26 is provided between grid 24 and the anode. In accordance with the invention grid 23 is nearer grid 25a than to grid 25, and grid 24 is nearer to grid 26 than to grid 25a. Fig. 6 (not shown) describes a similar arrangement but in which the other side of the cathode is also coated, so that an additional electron stream may be provided for another purpose. In another modification, the electron stream is formed into a beam by means of screens attached to the cathode. The shape of each control grid may be made irregular so that the slope of the anode-current, grid-voltage characteristic decreases as the grid is made more negative. U.S.A. Specification 2,343,263 is referred to. The Specification as open to inspection under Sect. 91 describes further examples in which the desired effect is produced by means of electrode construction to produce mirror-deflection effect and in which the effect is obtained by velocity control of the electron stream. Reference is also made to the use of an electron lens between two deflection electrodes. This subject-matter does not appear in the Specification as accepted.
Patent GB-1382978-A (GB)
Title: Printing plate cylinder saddle
IPC: B41F27/14
Filed: 1973-05-09
Abstract: 1382978 Flexible printing plates; saddles ROCKWELL INTERNATIONAL CORP 9 May 1973 [12 June 1972] 22102/73 Heading B6C A flexible printing plate 61, Fig. 3, is secured to a printing cylinder through the intermediary of a saddle 11 which carries at each end radially restraining clamping and plate tensioning means whereby the cylinder when carrying the saddle may be used in a machine in either rotational direction. The plate ends are prepared with predetermined spaced slots and the tensioning means are actuated by the pivotal movement of an associated bell crank lever 37 shown in plan view in Fig. 2. Such movement has the effect of moving circumferentially tangs 51, 52 which are engaged in the trailing edge of the plate. Fig. 3, shows in part a cylinder mounting two printing plates 61 the right-hand side of the Figure showing a clamped leading edge whilst the left-hand side shows a tensioned trailing edge.
Patent GB-1213927-A (GB)
Title: A device for forming coils of thread
IPC: D03D47/26
Filed: 1969-04-30
Abstract: 1,213,927. Dummy shuttle loom. RUTI MACHINERY WORKS Ltd. 30 April, 1969 [30 April, 1968], No. 22125/69. Heading D1E. The invention rotates to the winding device of Specification 931,711 for supplying coils of weft sufficient for one pick 'to the dummy shuttles of a travelling ware loom. According to the invention, the blade 31 on which the flyer 32 winds coils of weft 35 is held stationary by two retaining means acting alternately, the change from one to the other being effected to allow a coil 35 to be slid along the blade by a pusher 41. As shown in Fig. 4, a plunger 66 having a forked end engages the edge of the blade; when it is retracted to allow a coil of weft 42 to pass, a dummy shuttle being pushed out of a magazine 30 onto a coil of weft 43 serves as the other retaining means. Various other designs are shown, including two plungers pressing on a flat side of the blade near its edges; or a spring strip 84, Fig. 7, operating near the free end of the blade 45 and having a finger 86 resting against the blade and another finger 85 entering a hole in the blade to prevent the coil of weft (43, Fig. 4) from sliding off prematurely. In another form, weft is wound on a cylindrical former instead of on a flat blade; two plungers engaging diametrically opposite dimples in the former act as one retaining means and the pusher 41 passing through a diametrical slot acts as the other. A similar arrangement employs a former of oval section having a slot for the pusher 41 through its major axis; two plungers gripping the former between them to act as the other retaining means. The devices may be used to measure weft for a jet loom.
Patent GB-467057-A (GB)
Title: Devices for filling small containers
IPC: B43L25/04
Filed: 1936-08-12
Abstract: 467,057. Inkstands; fountain pens. ABEL, E. Aug. 12, 1936, No. 22212. Convention date, Aug. 13, 1935. [Class 146 (iii)] A device for filling a small container, such as a fountain pen, consists of a compressible bulb B, Fig. 1, adapted to be connected at one end to the receptacle E, and at the other end to a reservoir, a plug G having a small passage H being interposed between the bulb and reservoir. The bulb is provided at one end with a flange adapted to be secured on the neck of the reservoir by a screw cap F, and at the other end is formed with a conical opening formed with internal steps to provide a fluid-tight joint with the container. When not in use, the device is closed by a plug J resting on the conical end and carrying a stem I which screws into an enlarged part of the.passage H. According to the Specification as open to inspection under Sect. 91, a fountain pen is provided with a semi-permeable membrane N, Fig. 3 (Cancelled), to prevent leakage of ink This membrane is mounted in a rubber sleeve O connecting the reservoir proper with the feed-bar. A rubber self-filling sac L, adapted to be deflated by twisting, is also provided. This subject-matter does not appear in the Specification as accepted.
Patent GB-211438-A (GB)
Title: Improvements in and relating to spectacle frames
IPC: G02C1/08
Filed: 1923-09-04
Abstract: 211,438. Shur-on Optical Co., Inc., (Assignees of Kirstein, H. E., and Gage, H. W.). Feb. 16, 1923, [Convention date]. Spectacles.-Spectacle frames are constructed with end-pieces 3, 4 adapted to receive a temple piece 8 formed with two ears 10. The temple piece 8 is of non-metallic material and is provided with a metal insert 9 formed with ears 10 the overall dimensions of which are not less than the diameter of the stem 9. One of the endpieces 3 is slotted to receive the upper ear 10 and the other end-piece 4 is recessed to receive the other ear when held in position by the screw 5. The pivot 15 of the temple-piece 8 passes loosely through both ears and is screwed at its lower end to engage the lower end-piece 4. Projection 18 on the ears 10 limit the movement uf the temple pieces 8. By this construction the lens may be removed without removing the temple piece or vice versa. In a modification the temple piece is entirely of metal and formed with extended shoulder pieces 18<a>, Fig. 10, in place of projection on the ears 10.
Patent GB-966275-A (GB)
Title: Reciprocable conveyor
IPC: B65G69/00
Filed: 1962-06-08
Abstract: 966,275. Endless conveyers. HEAD, WRIGHTSON & CO. Ltd. June 8, 1962 [June 12, 1961], No. 22291/62. Heading B8A. A uniform thickness of balls of a mixture of ore concentrate, binding material, water and, if desired, fuel, is formed on a travelling grate 8 of a pelletizing machine 9 via a vibratory screen 7 fed by an endless conveyer 6 across which the discharge end 5 of an extensible endless conveyer 4 is reciprocated so as to deposit the balls is spaced flat-topped parallel piles 107. The balls are formed in machines 1A, 1B and screened by vibratory screens 2A, 2B, undersized balls being returned to the machines 1A, 1B by endless conveyers 12A, 12B. Sufficiently large balls are fed to the conveyer 4 via endless belts 3A, 3B. The extensible conveyer 4 comprises an endless belt 23 looped round rollers 24, 62 attached to the main frame 21, a tensioning roller 61 nominally with its axis stationary with respect to the main frame 21, an idler roller 44 and an end roller 41 at the discharge end 5, both mounted on a carriage 22 mounted on rollers 39 on rails 35 along which the carriage is reciprocated by an hydraulic ram 26, 27, dashpots 72 cushioning the reversals of motion. The length of the belt 23 is fixed (movement of the rollers 41, 44 being the same their effects cancel). The material carrying upper run 42 may be troughed by suitably inclined idler rollers 47. Cams 83, 84 (84 not shown) on either side of the carriage 22 engage limit switches (not shown) to cause reversal of the carriage at the end of each stroke of the ram 26, 27. Each cam 83, 84 can be adjusted so that the length and position of the stroke can be varied. The carriage 22 moves at the speed of travel of the belt 23 so that the balls are only deposited as the discharge end 5 of the conveyer 4 returns across the conveyer 6.
Patent GB-1091481-A (GB)
Title: Agricultural spray applicator
Inventor: HILLS MICHAEL ROBERT
IPC: A01C15/02
Filed: 1963-06-05
Abstract: 1,091,481. Crop sprayers. IMPERIAL CHEMICAL INDUSTRIES Ltd. May 27, 1964 [June 5, 1963], No. 22321/63. Heading B2F. A portable device suitable for spraying weedkiller on the ground close to trees &c. comprises a handle member 1, a U-shaped shield 3 connected at two points 5, 6 on a bracket 4 at one end of the handle and adapted to surround part of a tree, and an applicator head 16 provided with a nozzle 17 arranged to direct weedkiller onto that part of the ground adjacent the surface of the shield remote from the tree, said head 16 being pivoted at 18 to a housing 19 forming part of the handle member and being also pivoted by means of a rod 20 to the push rod 7 of a pump 2 so that when the rod is actuated the head moves about its pivotal connections. The shield may be flat and may be formed of a flexible synthetic polymer. The head may be formed with an orifice or may be provided with a nozzle or a boom supporting a plurality of nozzles. The device may be mounted on wheels. The shield is adapted to be swung into a storage position, Fig. 3 (not shown) surrounding the pump and handle.
Patent GB-1044133-A (GB)
Title: Improvements in and relating to sliding door gear
Inventor: STRETTON HENRY JACKSON
IPC: E05F15/14
Filed: 1964-05-29
Abstract: 1,044,133. Door operating mechanisms. G. D. PETERS & CO. (ENGINEERING] Ltd. May 18, 1965 [May 29, 1964], No. 22439/64. Heading E2M. In door operating mechanism in which a door or doors are operated electrically, hydraulically, or pneumatically, failure of the operating power releases a latch 23 whereby a spring loaded rod 1 is freed and opens the, or one of, the doors. A motor 7 and gears 30, 31, 6 drive a rack 2 on one end of the rod 1 in one direction only through a free wheel device 8 to comprise the spring 9. A limit switch connected with the latch 23 stops the motor 7 when the latch is in the position shown in Fig. 1. Failure of the main power source releases the latch 23 whereby the spring urged rod 1 strikes an abutment on a door to cause door opening. The mechanism could be applied to a hinged door.
Patent GB-750339-A (GB)
Title: Improvements in or relating to thermionic cathodes
Inventor: BECK ARNOLD HUGH WILLIAM
IPC: H01J1/28
Filed: 1953-08-14
Abstract: 750,339. Cathode materials and processing. STANDARD TELEPHONES & CABLES, Ltd. Aug. 6, 1954 [Aug. 14, 1953], No. 22495/53. Class 39 (1). An indirectly-heated cathode in which emission is confined to a restricted solid angle comprises a compacted mass of mixed powders of nickel (or cobalt) and alkaline earth material, together with a reducing agent, the mass being sintered and firmly united to a metal support. A suitable mixture is 69 per cent nickel, 30 per cent barium-strontium carbonates, and 1 per cent zirconium hydride as a reducing agent, ballmilled as described. In the construction of Fig. 1, the mixture is applied as a layer 5 to the end surface of a cup 1; the adhesion is improved by an intermediate nickel layer 4. The nickel is sintered by stoving in vacuo or hydrogen, to form a roughened surface on to which is brushed or sprayed the emissive mixture suspended in amyl acetate. It is then dried and compressed. The cathode may be temporarily stored in this state by coating with a suitable plastic. In the alternative form of Fig. 2, a plug 7 of the compressed emissive mixture is contained in the cupshaped end of the cathode sleeve 6. A backing- plate 8 gives additional support, and prevents rearward emission. The cathode may be activated after assembly in the finished tube, or by mounting in a temporary tube with an anode. The cathode is first outgassed, during which the sintering also takes place, and then current is drawn from it in the usual manner. Such cathodes can then be removed, since they are temporarily stable in air. Fig. 3 (not shown) is a modification of Fig. 2 in which the plug 7 has a composite structure providing a greater porosity in the interior than at the surface. This is obtained by varying the amount of alkaline earth carbonate in the original powder mixture, reduction of the carbonate proportion giving reduced porosity. The powder is introduced in several layers, the central layer having 40 per cent carbonate, the upper layer 20 per cent and the lower layer 10 per cent. The cathode surface may be covered with a closure of porous sintered tungsten, or other specified metal. Particulars are given regarding temperatures, pressures, grain sizes, dimensions, and layer thicknesses. Fig. 4 (not shown) is a set of curves comparing the performance of the cathode of the invention with other cathodes. Suitable applications are for cathode-ray tubes, high-voltage rectifiers, and high-frequency beam tubes.