baber/WOPTO huggingface dataset:
Patent GB-649897-A (GB)
Title: Improvements in or relating to the preparation of silica sols
IPC: C01B33/145
Filed: 1948-01-06
Abstract: Stable silica aquasols of high concentration are obtained by first preparing a silica aquagel, having a pH of 1.5 to 7, from a water-soluble silicate and an acid, and then allowing the gel to synerize, crushing it into lumps, washing it with water to remove the electrolytes formed, covering it with an aqueous solution containing 0.03 to 0.5 per cent of a substance which ionizes or hydrolyses in water to produce hydroxyl ions, and heating the treated gel at at least 80 DEG  C. without evaporation of water until substantially all the gel is converted to a sol.  Specified aqueous solutions of a substance giving rise to hydroxyl ions are those of caustic soda, caustic potash, alkaline earth metal hydroxides and sodium and potassium carbonates and phosphates. Heating of the treated gel is effected in an autoclave or other closed vessel.  The aquagel is prepared, for example, from sodium or potassium silicate and sulphuric or other mineral acid or acetic or tartaric acids.  The aquasols prepared as above may be converted into organo-aquasols by the addition of a water-miscible organic liquid, e.g. acetone, methyl, ethyl and propyl alcohols, ethylene glycol mono-ethyl ether, ethylene glycol mono-methyl ether mono-acetate, and methyl and ethyl carbitol, and part or all of the water may then be removed by distillation, if the organic liquid has a boiling point higher than that of water.  In the case when an organic liquid, e.g. ethyl alcohol, having a boiling point lower than that of water, is employed, another organic liquid, e.g. benzene, is added in an amount sufficient to permit removal of the water in the form of a ternary constant boiling mixture.  A silica organosol in a water-immiscible organic liquid may be obtained by the addition of a water-immiscible organic liquid to the organosols prepared as above and the water-miscible organic liquid then removed by distillation.
Patent GB-1241731-A (GB)
Title: Rheumatoid agglutination test reagent and its method of preparation
Inventor: MIZUSHIMA YUTAKA
IPC: G01N33/564
Filed: 1969-01-02
Abstract: 1,241,731. Determination of rheumatoid factor. KOWA CO. Ltd. 2 Jan., 1969, No. 401/69. Heading B1X. A rheumatoid agglutination test reagent comprises, in a buffered saline solution pH 6 to 9, (a) ion exchange resin particles coated with human gamma globulin and (b) either a colouring agent capable of colouring gammaglobulin, or a haemolytic agent. Cation or anion exchange resin particles of average diameter 0.5 to 3 microns may be used. Colouring agents exemplified are trypan blue, Evans blue, brilliant green; haemolytic agents exemplified are saponin, polyoxyethylene lauryl ether, laurylamine, "Miranol" (RTM), others are mentioned. The buffer is preferably glycine-sodium hydroxide. The agent may also contain preservative and/or stabilizer. Preferred proportions are 0.5 to 2% coated particles, 0.05 to 2% haemolytic agent, 0.005 to 0.15% colouring agent, 0.005 to 0.5% preservative, 0.005 to 1% stabilizer.
Patent GB-116257-A (GB)
Title: Improvements in Electrically Fired Small Arms.
Inventor: BOWMAN LEVI MAIN
IPC: F41A19/58
Filed: 1918-01-08
Abstract: 116,257. Bowman, L. M., and Smith, W. A. May 29, 1917, [Convention date]. Firing - appliances; safety - appliances; sighting-accessories. - Relates to electric firing mechanism of the kind comprising a battery and induction coil, finger operated contacts for closing the primary circuit, and a spark gap in the secondary circuit at the ignition point. The invention consists mainly in (a) an insulation member adapted to be moved between the contacts to prevent them from being closed and (b) a cartridge primer. In the construction shown, the mechanism comprises a battery 5, an induction coil 6, a switch operated by the trigger 16, and a cartridge having an electric primer. The switch is in the primary circuit and comprises a stationary contact 12 and a movable contact 13 pivoted to the trigger 16. The safety-device comprises a plug 39 of insulating material adapted to be pushed up between the two contacts 12, 13. As an additional safety-device, a second switch 34 may be provided. The primer of the cartridge comprises an insulating plug 27, Fig. 3, a central electrode 28, and a metal casing 26, a sparkgap being between the end of the electrode 28 and the inturned end of the casing 26. A small electric lamp 48 is provided near the muzzle of the barrel.
Patent GB-1453331-A (GB)
Title: Closing packages and devices therefor
IPC: B65B67/06
Filed: 1974-01-04
Abstract: 1453331 Pliers for closing clips on packages H NIEDECKER 4 Jan 1974 [10 Jan 1973 (2) 11 April 1973] 00435/74 Heading B4W Pliers for applying a U-shaped clip 9, described and claimed in Specification 1,453,332 (see Division E2) to a gathered portion 12 of a packaging material and for closing the clip therearound comprises pivoted arms 1, 2 a housing member 5 integral with one of the arms 1, a plate 6 pivotally mounted on the housing member 5 and having a recess 8 for holding a clip 9 with its open end towards the gathered material 12 when the latter is disposed adjacent a die 19 mounted on the housing member, and a drive connection between the arm 2 and the plate 6 for pivotal movement thereof whereby the clip is made to move in an arcuate path 18 firstly to embrace the gathered portion 12 and then to be closed by the action of the die 19 and plate about the said portion 12. A pivoted spring-loaded lever 13 assists in the correct placing of the gathered material adjacent the die 19. A magazine for supplying the clips extends laterally from the housing member (Fig. 3, not shown). As shown the drive connection includes an extension of the arm 2 and a cam groove 29 in the plate 6 but in an alternative embodiment (Figs. 1-3, not shown) the connection involves a knee type lever. In another embodiment (Fig. 6, not shown) a tapered opening in the housing member provides a lead-in for the gathered material to a space adjacent the die.
Patent GB-567966-A (GB)
Title: Improvements in the method of, and apparatus for, forming the recess in the base of shells or like products
IPC: B23B5/00
Filed: 1939-01-05
Abstract: 567,966. Turning projectiles. HEPBURN, J. T. Jan. 5, 1939, No. 457. [Class 83 (iii)] For turning a recess in the base of a shell or the like, a tool with a cutting portion of width substantially equal to the radius of the recess is fed axially against the work to cut the recess. Four tools 29-32, Fig. 1, are provided on a cross-slide 35 of a lathe, the first two rough. turn the recess and outside of the base, while the second two perform the corresponding finishing operations, their operative positions being determined by the stops 20A and 20 respectively. The rough-recessing tool 29 is set in position by placing a finished shell in the chuck 14 and bringing the adjustable stop 21 against a pivoted gauge block 24, Fig. 2, which is previously swung over into the path of the stop 21 ; the tool is then clamped in a position where it just contacts the base of the shell. The tool slide is next moved across until it contacts the stop 20A, and the finish-recessing tool 31 set in a similar manner. The gauge block 24 is of a thickness equal to the required rough depth of the recess and when swung aside allows the tool 29 to cut the recess, the movement being limited by the stop 21 engaging the face 26 of the gauging device 27. The latter is then rotated slightly to move the stop piece 26 away from the gauge 21 an amount equal to the finishing cut, and the tool 31 moved into position to effect this cut. The tool 31 is also provided with a longitudinal cutting edge and after completing its axial movement it is moved slightly in a lateral direction to finish the walls of the recess. The tools 30 and 32 rough turn and finish, respectively, the base and riveting rib on the end of the shell during the roughing and finishing operations performed by the recessing tools.
Patent GB-945469-A (GB)
Title: Replenishing hydraulic braking and other systems
Inventor: KINGS LEONARD WILLIAM
IPC: B60T17/22
Filed: 1959-01-06
Abstract: 945,469. Container closures. GIRLING Ltd. Dec. 31, 1959 [June 1, 1959], No. 468/59. Heading B8T. [Also in Division F2] A fluid container 22, Fig. 2, has a stem 23 with a head 25 normally biased to close opening 24; the container is fixed to a reservoir 26 by a wire loop 27 and the bottom of the container is forced away from head 25. In Fig. 4, a head 34 on stem 32 is forced by diaphragm 30 to close opening 33; an extension of stem 32 engages an abutment in reservoir 36 to raise head 34 when container 31 is push-fitted on to the reservoir and held in position by wire loop 39. The stem extension may have a nut or spring-clip to hold head 34 against the container bottom when not fitted to the reservoir. The extension may be screwed into a threaded bore in a projection in the reservoir to withdraw an external head from the container opening and to hold the container in position, Fig. 7 (not shown). In Fig. 8 (not shown) a spring pressed valve in the container is engaged and opened by a hollow stem fixed in the reservoir. The container is of thin metal on a transparent plastics material.
Patent GB-605319-A (GB)
Title: Coating limited area of rectifier discs
IPC: H01L21/08
Filed: 1945-01-05
Abstract: <PICT:0605319/III/1> <PICT:0605319/III/2> A limited area of a rectifier disc is coated by applying a flexible masking strip, which may be of paper, to a portion of the disc surface, maintaining the strip in tight engagement with the surface by tension of the strip and applying coating material to the exposed portion of the surface. A series of discs may be coated by mounting the discs on a flexible plate which is held against a curved support by the tension of a masking strip drawn tightly across the discs.  In Figs. 1 and 2, a jig 12 mounts a metal plate 11 from which are struck up a series of rectifier base-plates 10.  The plate 11 is placed with one end under the hook 15 and an end of the masking strip 17 is wedged in the clip 16, brought up through the notch 19 across the central portions of the discs and is drawn downwardly through the opposite notch 19, pulling the plate 11 against the curved face of the support 14. The insulating liquid can then be applied to the exposed parts by brushing or spraying.
Patent GB-643854-A (GB)
Title: Improvements in the transmission of electric signals
IPC: H03G5/20
Filed: 1947-01-07
Abstract: 643,854. Gramophones. SCOTT, H. H. Jan. 7, 1947, No. 546. Convention date, Feb. 9, 1946. [Class 40 (ii)] [Also in Group XXXIX] Systems of the kind described in Specifications 643,574, [Group XXXIX], 643,662, [Group XL (b)], 645,256, 645,343 and 656,545, [all in Group XXXIX], in which the frequency range is expanded or compressed according to the strength of the signals, are characterised by delaying the transmission or reproduction of the signals to permit the proper exercise of the control. A gramophone pick-up 19, Fig. 3, feeds a reactance tube filter 70 through a delay network 160, the mid-audio frequencies being also applied to a control circuit 6 which applies a voltage to the grid of the reactance tube according to the strength of these frequencies, the frequency range of the output being restricted in quiet passages to reduce noise such as needle scratch. The delay network may be omitted and two pick-ups 19, 119, Fig. 6, engaging the same groove may feed the controlled and control circuits, respectively, the distance between the pick-ups being controlled by a spring 164 and a cable 163 according to the distance from the centre of the record. Alternatively, the pick-ups may be at a fixed distance apart, Fig. 8, movement of the pickup arm altering the value of a resistance 91 in the control circuit. The invention may also be applied to kinematograph films.
Patent GB-128855-A (GB)
Title: Process of Manufacture of Composite or Compound Metal Plates and Large Sheets.
Inventor: MARTIN EDOUARD
IPC: B23K20/227
Filed: 1919-01-08
Abstract: 128,855. Martin, E. Jan. 8, 1919. Cased or compound forms; plates and sheets. -Composite sheets 'or plates formed of a steel foundation coated on either side with copper, brass, or other metal or alloy, are produced by employing the outer layers in the form of supple blocks formed of a large number of thin sheets of a thickness such as a tenth of a millimeter. The steel may be of a thickness from 10 to 25 cm., and to facilitate adhesion of the outer layers may be coated electrolytically with copper or the like, or a composite layer of brass and copper may be employed with the brass adjacent to the steel; or if the outer layers are of silver, tin, or zinc, may be applied electrolytically to the steel. The outer layer of the block may be formed of two metals such as copper and brass, or silver, or tombac. The union of the steel and other metal is effected under hydraulic pressure in iron clamps at a temperature of 800-1000‹ C., and after this the material is rolled to the required thickness.
Patent GB-1118771-A (GB)
Title: Polymerisation process
Inventor: ALDERSON GEOFFREY WINTON
IPC: C08F10/14
Filed: 1966-01-06
Abstract: Polymers of alpha-olefins containing 4 to 12 carbon atoms, are made by polymerizing one or more of the olefins in the presence of a catalyst obtained by mixing an organoaluminium compound with a composition comprising supported chromium oxide, at least a portion of the chromium being in the hexavalent form and the support comprising silica and/or alimina, and in effecting the polymerization in the liquid phase, i.e. in bulk or an inert diluent. Suitable olefins are butene-1, pentene-1, hexene-1, 4 - methylpentene - 1, and decene.  The exemplified olefin is 4-methylpentene-1, and Al(C2H5)3 is used as the organoaluminium compound.  Reference has been directed by the Comptroller to Specification 884,545.
Patent GB-718980-A (GB)
Title: Arrangement in control valves for hydraulic transmission systems
Inventor: NORMANN ARNE
IPC: B66D1/14
Filed: 1952-01-08
Abstract: 718,980. Hydraulic machines. BOGEN VERFT AKTIESELSKABET. Jan. 8, 1952, No. 619/52. Class 69 (2) An arrangement of valves in a hydraulic system controlling, e.g. a winch motor, so that full pump pressure is always available to operate the motor, comprises a manually-actuated s'ide valve E and a spring-loaded relief valve V jointly mounted in a casing F having an inlet C from the pump, connections A, B with the motor, and a discharge outlet D. The valve V is subjected to pump pressure on one face, controls a passage b leading to the connection B and the outlet D, and is subjected on its other face to the pressure in the connection A. As shown, pump pressure passes unimpeded to the winch motor which then runs at maximum hoisting speed. To brake the motor, the valve E is moved down to partly mask the connection A to reduce the pressure therein and behind the valve V which now opens to connect.the pump to the outlet D. To reverse the motor, the valve E is lowered to connect the connection B with the inlet C, the connection A then being connected to the outlet D.. Neutral position is with the connection A fully masked whence the full pump supply passes to the outlet D.
Patent GB-218579-A (GB)
Title: Improvements in apparatus for cleaning the wind-screens of motor vehicles
IPC: B60S1/34
Filed: 1924-01-10
Abstract: 218,579. Radovsky, D. R. Jan. 10, 1924. Addition to 157,773. Windows and the like, cleaning.- The apparatus described in the parent Specification, in which a wiper is reciprocated over the screen by fluid pressure acting on a piston working within a cylinder, the piston being connected to the wiper by a flexible band, is made more compact by mounting the guide 34 for the wiper 30 adjacent to the cylinder 1 along one edge of the screen 2 and making the guide below for use as a conduit for the working fluid. Hollow castings 3, 4 carry the ends of the cylinder and guide and have mounted in them pulleys 13, 14 over which passes a flexible steel band 19 fixed to the piston 20 and the. wiper-carrier 27 and passing through stuffing-boxes 23, 24. One end of the hollow guide 34 communicates with the chamber 10 of the casting 4, which is connected by an aperture 12 with the left-hand side of the piston, while the other end of the guide is connected with a port 47 in the front face of the casting 3. Other ports 48, 49 in this face communicate with the. source of suction or pressure and the right-hand side of the piston respectively, and a slide-valve 46 cooperates with the ports to supply the working fluid to either side of the piston alternately. As shown in Fig. 4, the right-hand side of the piston is connected to the port 48, while the. left-hand side communicates through the port 47 with the valve chamber, which is open to the atmosphere at 68. The slide valve is held on its seating and operated by a spring arm 52 which is rocked by a switch 54 operated by a tappet-rod 60 slidably mounted at each end in the castings 3, 4 and having abutments 66 adapted to be engaged by the wiper-carrier 27 at the ends of its travel. Buffer springs 67 are fitted to prevent noise.
Patent GB-906833-A (GB)
Title: Improvements in pulsation dampening or surge absorbing apparatus
IPC: F16L55/052
Filed: 1960-01-08
Abstract: 906,833. Pressure-relieving devices for fluids. WESTINGHOUSE AIR BRAKE CO. Jan. 8, 1960 [Jan. 8, 1959], No. 705/60. Addition to 824,365. Drawings to Specification. Class 135. The pulsation dampening or surge absorbing apparatus disclosed in the parent Specification is modified in that the hollow mandrel is composed of sintered metal having pores of such perviousness as to afford throttled communication between the interior of the mandrel and the space between the sleeve and the mandrel.
Patent GB-953302-A (GB)
Title: Fluid damped shock absorbers
Inventor: MILLARD DENNIS JOHN
IPC: F16F9/19
Filed: 1962-01-08
Abstract: 953,302. Hydraulic-shock absorbers. BOULTON PAUL AIRCRAFT Ltd. Jan. 1, 1963 [Jan. 8, 1962], No. 706/62. Heading F2S. [Also in Division B7] A shock-absorber comprises an inner cylinder 23, a piston-rod 17 which is slidable within and projects from the cylinder and which has an integral piston 25, and at least two sets of orifices 34, 35 which are in, and spaced apart along, the cylinder wall and which place the cylinder chambers 32, 33 on either side of the piston 25 in communication with an annular chamber 24 which is formed between the cylinder 23 and an outer cylinder 22. The annular chamber 24 communicates, through orifices 47, 46, with a liquid reservoir space 42 and also, through apertures 28, 29 controlled by spring-loaded ball valves 30, 31 respectively, with the chambers 32, 33. The ball valves 30, 31 prevent flow of fluid from the chambers 32, 33 to the reservoir 42, the valve apertures 28, 29 being formed respectively in closure members 26, 27 for either end of the inner cylinder 23. One end of the outer cylindrical housing 22 is closed by a member 36 which is retained by a ring 37 and forms a bearing for the piston-rod 17 the other end, which extends beyond the inner cylinder, being closed by a plate 38 bolted at 39. The flange 41 of a stepped cylindrical member 40 is clamped between a shoulder 22a on the inner wall of the outer cylinder 22 and the closure member 27 to define the annular chamber of the reservoir 42. The latter, which accommodates a spring- loaded annular piston 43, communicates with the valve aperture 29 through an aperture 46 in the flange 41 and also, through further apertures 47, the annular space 24 and apertures 48, with the valve aperture 28. The piston 25 is provided with an orifice 25a, and the reservoir 42 can be recharged through a plug 49. The underside of the annular piston 43 is in communication with the hollow interior of the piston-rod 17 which is provided with a relief valve 51.
Patent GB-568119-A (GB)
Title: Improvements in radio direction finding systems
IPC: G01S3/14
Filed: 1940-01-12
Abstract: 568,119. Directive wireless systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., FARMER, F. T., and WHITAKER, L. W. Jan. 12, 1940, No. 769. [Class 40 (v)] In a direction finder of the kind in which the signal pick-up from two spaced aerials is fed through a radiogoniometer to an indicator, the gain of one of the amplifier stages is periodically and automatically varied in such a way that at least once in each cycle of variation the amplitudes of the voltages fed to the indicator are equal. As shown, the signals from the two frame aerials F1, F2 are fed through push-pull amplifiers V], V2 and V3, V4 respectively to the field-coils of a radiogoniometer RG, the output from the search coil of which is fed to one of the two pairs of deflecting plates of a cathode-ray tube indicator. The other pair of defecting coils of the tube is fed from a timebase circuit V5, V6, and a part of this scanning voltage is tapped from a potentiometer R6 and applied to vary cyclically the gain of the amplifiers V3, V4. An additional bias is applied from a potentiometer R6 to the suppressor grids of the same valves, to offset any change in grid-cathode capacity likely to produce phase-variations in the amplified currents. The resulting signal on the' screen of the cathode-ray tube is a V-shaped trace, the apex of which is located at a point on the time-base at which the amplitudes of the two signals are equal.
Patent GB-412645-A (GB)
Title: Improvements in or relating to barrel-valves for fluid motors
IPC: F03C1/36
Filed: 1933-01-10
Abstract: 412,645. Centrifugal governors; engine valves. MILLS, E. C., 35, Trelawney Road, Camborne, and HOLMAN BROS., Ltd., Camborne, Cornwall. Jan. 10, 1933, No. 883. [Classes 57 and 122 (ii).] Fluid-pressure engines, wherein the distribution is effected by rotary-barrel valves, are controlled by sleeve slide valves which control supply ports in the rotary valves and are moved by centrifugal governors against the resistance of springs. The barrel valve is housed in a cylindrical sleeve 22 between pairs of cylinders as described in Specification 412,637 and is driven by a chain of wheels from the crank-shaft. The inlet ports 6 are arranged at one end of the valve, and the exhaust 7 at the other end. The ports 6 are controlled by a sleeve 11 with a flange 12 upon which acts a spiral spring 13 and the arms 19 of weighted bell-cranks 18, 19 pivoted at 17 to brackets on a sleeve fixed on the valve. The governor is housed in a casing 23 provided with an inspection cover. The governor may positively actuate the sleeve 11 by engaging a groove therein, or may act through a pin-and-slot connection.