baber/WOPTO huggingface dataset:
Patent GB-875735-A (GB)
Title: Processes for the preparation of catalysts for the polymerisation of olefinically unsaturated hydrocarbons and for the preparation of polyolefinic-hydrocarbons; and the resulting catalysts and polymers
IPC: C08F10/00
Filed: 1960-01-25
Abstract: A polymerization catalyst is prepared by reacting together (a) one or more titanium tetrahalides with (b) one or more aluminium alkyl compounds which may contain halogen atoms and (or) alkoxy groups, the reaction mixture containing 1/2 -1\ba1/2 alkyl groups per molecule of titanium tetrahalide, to give a product which is then reacted with (c) one or more compounds in the molecular structure of which aluminium atoms are bound to alkyl groups and to a lesser number of alkoxy groups.  The catalyst is used for the polymerization of olefinically unsaturated hydrocarbons, e.g. propylene or butadiene, and in particular the copolymerization of ethylene with propylene and the copolymerization of ethylene and/or propylene with higher a -olefins, e.g. butylene-1, or with conjugated dienes.  In examples, catalyst components specified are: (a) TiCl4; (b) AlEt3, n-octyl-OAlEt2 or an admixture thereof; and (c) EtOAlEt2, or n-octyl-OAlEt2 (optionally plus AlEt3).  Specifications 810,023 and 816,614 are referred to.ALSO:A polymerization catalyst is prepared by reacting together (a) one or more titanium tetrahalides with (b) one or more aluminium alkyl compounds which may contain halogen atoms and (or) alkoxy groups, the reaction mixture containing 1/2 -1\ba1/2 alkyl groups per molecule of titanium tetrahalide, to give a product which is then reacted with (c) one or more compounds in the molecular structure of which aluminium atoms are bound to alkyl groups and to a lesser number of alkoxy groups.  The catalyst is used for the polymerization of olefinically unsaturated hydrocarbons, e.g. propylene or butadiene, and in particular the copolymerization of ethylene with propylene and the copolymerization of ethylene and/or propylene with higher a -olefins, e.g. butylene-1, or with conjugated dienes.  In examples, catalyst components specified are:-(a) TiCl4; (b) AlEt3, n-octyl-OAlEt2 or an admixture thereof; and (c) EtOAlEt2, or n-octyl-OAlEt2 (optionally plus AlEt3).  Specifications 810,023 and 816,614 are referred to.
Patent GB-523891-A (GB)
Title: Improvements in or relating to films bearing sound record tracks
IPC: G11B7/28
Filed: 1939-01-19
Abstract: 523,891. Kinematograph films bearing sound records. RUDKIN, L. C. Jan. 19, 1939, No. 2676/38. [Classes 98 (i) and 98 (ii)] In printing variable-width or variabledensity sound records by projection on to a kinematograph film, and in order that two parallel records may be printed in the usual margin, the printing and printed films are relatively inclined to each other as they pass through their respective printing zones so that a print of narrower width than that on the printing film is made. The width of each printed record may be continuously varied in accordance with the relative volume of sound desired from the two records in the finished film. Use may be made of the apparatus shown in Fig. 1, wherein synchronously driven drums 32, 36, draw the printed film 30 and printing film 34 through a projection system indicated by lamp 38 and objective 39. The spindles of the printing-film drums 35, 36 are carried by brackets 40, 41 supported on a turntable 42 having a pivot axis 43 in line with one edge of the sound track on the film 34, so that this film may be inclined relatively to film 30. In a modification, the film 34 remains untilted, and the film 30 and the optical system are mounted on the turntable. The relative widths of the printed records may be controlled by a strip having a cam edge, which is driven synchronously with the films, the cam edge acting on an arm fixed to the turntable. An apparatus for producing such a strip cam is shown in Fig. 5. The films 60, 61, bearing the two sound records to be printed are scanned by photo-electric cells 64, 65 connected by way of potentiometers 71, 72 and an amplifier (not shown) to a loud-speaker 68. During the scanning, knobs 73, 74, controlling the potentiometers are turned to adjust the relative volumes of the two records. Simultaneously (or in a subsequent operation, from notes made during the first operation) shafts 77, 78 are driven from the potentiometer knobs to control the position of cutters 80, 81 operating on a travelling strip 79 to form therein edge cams 82, 83, one for each sound record.
Patent GB-922781-A (GB)
Title: Organic thiophosphorus acid derivatives
IPC: C07F9/09
Filed: 1961-01-23
Abstract: The invention comprises phosphorus compounds of formula <FORM:0922781/IV(a)/1> where R stands for an alkyl radical or for an aryl radical which may be substituted by a halogen atom or an alkyl radical, R1 and R11 are hydrogen or alkyl, R2 and R3 are alkyl, cycloalkyl, alkoxy or phenyl, X is a nitrile, carboxylic ester or carboxylic amide radical, Y is oxygen or sulphur, and n is 0, 1 or 2. They may be obtained by reacting a compound of formula <FORM:0922781/IV(a)/2> with a salt of <FORM:0922781/IV(a)/3> and if desired oxidising the product to the sulphone or sulphoxide; alternatively the oxidation may be effected first. The products are insecticides (see Group VI).  Compounds of formula <FORM:0922781/IV(a)/4> are prepared by reacting <FORM:0922781/IV(a)/5> with RS-Hal.  Examples prepare compounds in which: X = COOCH3, R11 = CH3 and R = CH3, C2H5 and p-ClC6H4; X = COOC2H5, R11 = CH3 and R = C2H5; X = COOC2H5, R11 = H and R = CH3 and C2H5; X = CN, R11 = H and R = CH3 and C2H5; X = CONH2, R11 = H and R = CH3; (R1 is H in all cases).ALSO:Insecticidal compositions comprise organophosphorus compounds of formula <FORM:0922781/VI/1> where R stands for an alkyl radical or for an aryl radical which may be substituted by a halogen atom or an alkyl radical, R1 and R11 are hydrogen or alkyl, R2 and R3 are alkyl, cycloalkyl, alkoxy or phenyl, X is a nitrile, carboxylic ester or carboxylic amide radical, Y is oxygen or sulphur, and n is 0, 1 or 2, together with a carrier.  (For preparation see Group IV (b)).  Other insecticides and/or fungicides may be present.  Emulsifiers e.g. polyglycollised phenols such as benzyl hydroxy diphenyl polyglycol ether and auxiliary solvents such as acetone may be present.
Patent GB-627274-A (GB)
Title: Improvements in or relating to condenser rubbing aprons for carding engines
IPC: D01H5/86
Filed: 1947-01-28
Abstract: 627,274. Carding engines; condenser rubbing aprons. ANDRE RUBBER CO., Ltd., and CLEMENTS, H. Jan. 28, 1947, No. 2682. [Class 120 (i)] A condenser rubbing apron for. a carding engine comprises a continuously integral moulded endless belt of rubber or synthetic rubber and is provided with one or more rows of integrally moulded locating bosses on its inner surface extending longitudinally of the apron. The outer surface is ground and may be provided with a series of grooves, which, regarding the apron as a cylinder, extend helically round it from end to end thereof. A synthetic rubber composition from which the apron may be formed is a butadiene acrylic nitrile co-polymer and a vulcanising agent such as sulphur, or the apron may be formed wholly of rubber or with one face of rubber and the other of the synthetic rubber composition. The Provisional Specification states that the surface of the apron may be formed with ribs extending either longitudinally or diagonally or so as to form a diamond pattern, or may bear the imprint of a woven or wire fabric.
Patent GB-730816-A (GB)
Title: Improvements in firing means for pulverised fuel furnaces
IPC: F23C5/02
Filed: 1953-06-30
Abstract: 730,816. Pipe joints. BABCOCK & WILCOX, Ltd. Jan. 30, 1953 [Jan. 31, 1952], No. 2719/53. Class 99 (1). [Also in Group XXX] In a pulverized fuel fired furnace fired from a direct-firing mill, a pipe leading from the mill (not shown) to a burner 4 discharging into the furnace chamber includes a flexible connection to permit movements, due to thermal expansion and contraction of the walls of the furnace chamber, between the burner and the mill. As shown, the pipe comprises a vertical part 1, a bend 2 and a horizontal pipe 9. A sleeve 7 secured to a flange 5 on the bend spigots into one end of the pipe 9, the other end of which spigots into a sleeve 11. connected by a flange 12 to a flange 13 on a burner casing 14, the end of the sleeve 7 being thickened to form a curved projection 8 and a similar projection 10 being formed on the pipe 9. The pipe 9 is supported by hinge pins 15 on the sleeve 7 engaging slots 16 in the pipe 9 and pins 15<SP>1</SP> on the pipe engaging slots 16<SP>1</SP> in the sleeve 11, the points of intersection of the pins with the pipe axis forming the centres of curvature of the projections 8, 10. The joints are covered by bellows 19, 23 connected by a sleeve 21, one end of the bellows 23 being joined to the wall of a duct 25 leading to which is a tube 26 connected to a source of gaseous fluid under pressure, e.g. to the air duct in front of the mill. The gas flows via a space 28 to the joints so that entry of dust is prevented : the space 28 also acts as an insulating jacket. The bellows are enclosed by shields 29, 30.
Patent GB-211461-A (GB)
Title: Improvements in connection with the pyrogenic transformation of acetylene or gaseous mixtures containing acetylene
IPC: C07C2/48
Filed: 1924-02-02
Abstract: A mixture of aromatic hydrocarbons is obtained by passing acetylene or gases containing acetylene through tubes containing pieces, preferably rings, of electrode carbon which are heated by the passage of an electric current.  The ingoing acetylene may be heated at the expense of the heat of the outgoing products.  The gas may be circulated continuously through the tubes and the products, such as benzene and toluene, separated by absorption or cooling.  The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of any finely-divided material instead of electrode carbon and mentions ordinary or activated charcoal, glass, porcelain, quartz, silica, coal and non-catalytic metals. Methane is stated to be obtained by the decomposition of some of the acetylene; naphthalene is also mentioned as a reaction product.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1419424-A (GB)
Title: Mineral mining machines
IPC: E21C25/10
Filed: 1973-01-19
Abstract: 1419424 Mineral-cutting heads COAL INDUSTRY (PATENTS) Ltd 11 Jan 1974 [19 Jan 1973] 2830/73 Heading E1F A boom-mounted, rotary cutting head I of a mineral-mining machine comprises an end plate 2, a body portion 6 attached to and extending from said plate, a plurality of helical vanes 12 mounted in spaced relation on the body portion and with helix angles such that the degree of overlap of adjacent vanes is small or nil, and a plurality of mounting means on the vanes adapted to receive cutting tools 13. Preferably the helix of the vanes is of left hand. Such a head when mounted on a machine may have dust suppression medium directed to the cutting zone of the head from apertures or nozzles 22 of dust suppression means 20 non-rotatably mounted on the machine to the rear of the end plate of the head. Such apertures or nozzles may be provided in a tubular collar 21 mounted on the boom 23.
Patent GB-1106311-A (GB)
Title: An apparatus for measuring the probability distribution function of the amplitudes of alternating current signals
Inventor: KOP VLADIMIR
IPC: G06G7/52
Filed: 1966-01-21
Abstract: 1,106,311. Probability calculating. USTAV PRO VZYKUM MOTOROVYCH VOZIDEL. 21 Jan., 1966 [21 Jan., 1965], No. 2850/66. Heading G4G. [Also in Division G1] In apparatus for determining the probability distribution function, as set forth, of the amplitude of alternating electrical signals, the signal 1 to be investigated and a signal from a variable D.C. source 3 are fed through an adding circuit 2 to an amplitude-sensitive switch element 4, such as a mono-stable circuit, an instrument 5 being provided to indicate the mean time value of the output signal of switch element 4. The probability distribution function is determined by varying the D.C. source 3 and noting corresponding variations of the indications on instrument 5. In a modification, Fig. 2 (not shown), the signal to be investigated is fed to a wave-analyser (8) with selectable band-pass filters. The bandwidth of the signal to be examined is effectively altered by selecting the appropriate band-pass filter which is connected into the wave-analyser.
Patent GB-564363-A (GB)
Title: Improvements in pumps or compressors
IPC: F04B1/14
Filed: 1943-02-20
Abstract: 564,363. Pumps and compressors. FORD, R. C. Feb. 20, 1943, No. 2854. [Classes 8 (i) and. 102 (i)] A. multiple pump or compressor comprises two annular series of pump &c. units 2 in a, stationary housing in parallel planes about a central axis, one at each side of a cam 8 rotating about the axis in engagement, e.g. through rollers 13 with cross-heads 4 connecting the plungers of the two sets of units ; the adjacent cross-heads are arranged in sliding contact, with or without anti-friction balls or rollers ; the pump barrels 3 are formed as holes through fixed plates 5 in the cylindrical housing, and the inlet and outlet valve chambers are formed by annular ducts 16, 17 communicating with the units. Specification 561,128 is referred to.
Patent GB-549773-A (GB)
Title: Improvements in or relating to damping apparatus for swivelling wheels of aircraft and other vehicles
IPC: B64C25/50
Filed: 1941-03-03
Abstract: 549,773. Frictional shock absorbers. RUBERY OWEN MESSIER, Ltd., CONWAY, H. G.,and ORLOFF, G. March 3, 1941. No. 2887. [Class 108 (iii)] [Also in Group XXXIII] To damp oscillations in a swivelling wheel on an aircraft or other vehicle, a brake acting upon the wheel support is applied by fluid displaced from a cylinder as the wheel moves from its central position. An escape valve with a restricted orifice enables slow oscillations to take place without building up sufficient pressure to apply the brake. As applied to a tail or nose wheel on an aircraft a wheel fork 13 is secured to a conical stem 14 rotating in bearings in a casing 43 which may be pivoted at 44 for retracting the wheel. A sleeve 50 is secured to the casing 43 by a flange 51, and anchored to this sleeve by a dog clutch 53 is an inner sleeve 22 tightened by a nut 54 which forms an abutment for a spring 19 acting upon a piston 20 moving in a cylindrical space 21. The space 21 is divided from a lower space 55 by a partition 52 into which is screwed a valve member 70 housing a lightly loaded check valve 24 having a restricted orifice 25. Rollers 65 carried by the wheel fork act upon a cam 64 formed on a flange carried by a piston 56 moving in the space 55, relative rotation bein gprevented by rollers 61 engaging grooves 62 on the outside of the sleeve 22. Slow upward displacements of the piston 56 displace oil into the space 21 and the piston 20 is raised against the spring 19 the valve 24 permitting free return movement for centralizing the wheel. Quick upward displacement of the piston 56 builds up pressure sufficient to expand brake shoes 31, 32, Fig. 3, against a cylindrical surface 72 formed within the stem 14. The pressure is applied through a passage 71 to a cylinder 28 in which move opposed pistons 29, 30. A spring 73 withdraws the shoes when the pressure falls. Specification 549,772 is referred to in the Provisional Specification.
Patent GB-737412-A (GB)
Title: Improvements in or relating to dermatomes
Inventor: GROOM WALTER
IPC: A61B17/322
Filed: 1953-02-02
Abstract: 737,412. Dermatomes. ALLEN & HANBURYS, Ltd. Jan. 1, 1954 [Feb. 2, 1953], No. 2899/53. Class 81 (2). A dermatome has a blade which is oscillated longitudinally of its cutting edge by a pneumatic motor. The handle 8 encloses a conduit 9 through which air, under pressure, is fed through a stop valve 10 to a pneumatic motor 5. This comprises an oscillating piston 6 which is reciprocated under the control of an interconnected piston valve 30. A rod extends from each end of the piston 6 and is connected to a blade holder 13 which is mounted for oscillation on parallel rods, and the blade 13b is held in position by a spring-loaded clamp plate 13a. The working angle of the blade is determined by a pivoted plate 14 and the depth of cut by a transverse shoe 16 mounted on pivoted arms 17, the setting of which is adjusted by cams rotatable by a setting knob. A masking plate 21 at each end of the blade may be drawn across the cutting edge by a screw-threaded arrangement to determine the width of cut. By slight modification of the motor the appliance may be designed to run from a vacuum line.
Patent GB-663219-A (GB)
Title: Improvements in and relating to foldable tops for vehicle bodies
Inventor: VIGMOSTAD TRYGVE
IPC: B60J7/12
Filed: 1949-02-02
Abstract: 663,219. Vehicle hoods. BRIGGS MANUFACTURING CO. Feb. 2, 1949, No. 2912/49. Class 108(i) A vehicle hood comprises front intermediate and rear side rail sections 21, 22, 23 pivoted to each other at 24 and 25 and at 43 to the vehicle body. The rear rail section is operated by the toggle links 45, 47, and the ram 54, and the front rail section is operated by the link 27 which may be adjustable in length, connected directly between the front and rear rail sections 21, 23. The link 36 which operates the intermediate rail section 22 may also be adjustably secured at 39 to the vehicle body.
Patent GB-1020879-A (GB)
Title: A fluid tight container of corrugated cardboard or the like and method for producing the same
IPC: B65D5/36
Filed: 1965-01-22
Abstract: 1,020,879. Collapsible boxes. C. G. O. WEJNARTH. Jan. 22, 1965, No. 2956/65. Heading B8P. Side wall portions 2 of a plastics coated box blank 1 have extensions which are folded over the base portion 4 and end walls 6 so that the triangular portions 10 of the extensions 1 may be heat sealed to the end walls 6 to form the collapsible box shown. The end walls 6 may have extensions 8 which are supported on extensions 9 of the side walls 2 to form a lid for the box.
Patent GB-770573-A (GB)
Title: Improvements in or relating to electromechanical filters
Inventor: BABCOCK DEAN F
IPC: H03H9/50
Filed: 1955-02-01
Abstract: 770,573. Electromechanical filters. COLLINS RADIO CO. Feb. 1, 1955, No. 2985/55. Class 40 (8). The magnetostrictive driving rod 21 of an electromechanical filter is surrounded by a pair of coils 36, 37 connected in series opposition and situated at the velocity nodes of the rod, i.e. at distances #/4 and 3#/4 from its free end. The filter may be of the type described in Specification 722,664 in which the mechanical vibratory system comprises a number of discs 16, 18, &c. (two only shown) coupled by supporting wires 19. In the embodiment shown the driving wire is connected to the second disc 18 whilst the first disc 16 is secured to a non-magnetic tube 13 surrounding the driving coils. The output coupling of the filter (not shown) is identical to the input coupling. The driving coils 36, 37 may be surrounded by an internally recessed cylinder 44 of magnetic material, e.g. pressed powdered iron. For convenience of assembly this cylinder may be divided along its axis into two half cylinders. In a modification (Fig. 2a, not shown), the magnetic cylinder is omitted and a polarizing magnet is mounted above the tube 13.
Patent GB-666127-A (GB)
Title: Electromagnetic gauge
IPC: G01B7/00
Filed: 1948-02-02
Abstract: 666,127. Magnetic tests and measurements. MILES-BEMENT-POND CO. Feb. 2, 1948 [Nov. 25, 1943], No. 3037/48. Class 37. Apparatus for measuring the thickness of a strip or sheet of magnetic material comprises a head containing a pair of coils C adjustably supported in relation to the surface of a magnetic roller 10 carrying the strip 11. Initially the distance of coils C from the roller is adjusted to give balance in a bridge circuit (Fig. 3) with two coils D which have a fixed air-gap, by means of a vernier screw 23 attached to a calibrated dial 30. The air-gap between coils C and roller 10 is increased by the predetermined thickness of the strip 11, and the strip introduced into the gap, being held snugly against roller 10 by two further rollers 12, 13. If the thickness of the strip is as required, the bridge is rebalanced; if the thickness is greater or smaller the unbalance current of the bridge produces an appropriate reading on a meter G, calibrated in terms of thickness variation. The head is located by two cross-bars 14, 15, and may be moved across the surface of the strip 11, or locked in position by a cam-lock 16c operated by a handle 16d.
Patent GB-284651-A (GB)
Title: Improvements in or relating to the switching of stationary dry surface contact rectifier cells to a voltage divider
IPC: H02M7/06
Filed: 1928-01-31
Abstract: 284,651. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Siemens-Schuckertwerke Ges.). Feb. 2, 1927, [Convention date]. Plug couplings and connectors.-In a rectifying arrangement in which the load is connected between the mid point of a transformer secondary winding or potentiometer resistance and a pair of metal oxide rectifiers oppositely connected to the ends of the winding or resistance, provision is made for breaking the circuit through the two (rectifiers at the mid point connection when the load circuit is broken. This may be effected by connecting the two halves 2. 3 of the winding to a pair of sockets 7, 8, and the rectifiers 4, 5 to a third socket. The load is connected to a three-pin plug, in which two pins are electrically connected so as to connect the two halves of winding when inserted in the sockets. In a modified form, the sockets 7, 8 are replaced by a single divided socket, the two halves of which are adapted to be bridged by a single pin. When used with a potentiometer resistance, the socket 6 is similarly divided In a further modification, a three-part socket, two parts of which are connected to the winding sections and the third part to a plain socket forming one of the load circuit terminals, is used.
Patent GB-1169236-A (GB)
Title: Improvements in or relating to Spindle Mountings
Inventor: BLOHM ROBERT
IPC: F16H25/00
Filed: 1967-01-20
Abstract: 1,169,236. Grinding. R. BLOHM. 20 Jan., 1967 [3 Feb., 1966], No. 3096/67. Heading B3D. [Also in Division F2] A screw-and-nut mechanism comprises a vertical screw 1, a load supporting nut 4 of bronze, and a threaded safety ring 6 of steel, the ring 6 being spaced axially from the nut 4 and connected therewith by a pin 11 which prevents relative rotation between them. The amount of wear between the threads of the spindle 1 and nut 4 can be determined by measurement of the axial separation of the ring 6 and nut 4. In the event of the screw threads stripping, the screw 1 is prevented from falling through the nut 4 by the engagement of ring 6 with the upper surface of a flange 7 on the nut 4. Either the screw or the nut may be rotatably driven. The mechanism may be applied to so-called height spindles for grinding machines.
Patent GB-137145-A (GB)
Title: Drawer handles
IPC: A47B95/02
Filed: 1919-02-10
Abstract: 137,145. Applebee, R. S., and Goff, G. Feb. 10, 1919. Handles.-A drawer-handle consists of a slotted plate A within which is pivoted a tongue B which is normally flush with the plate. When a knob D on the shorter end of the tongue is pressed, the longer end projects as shown, and permits the fingers to be inserted behind it to withdraw the drawer.
Patent GB-192915-A (GB)
Title: An improved card game trump determining device
IPC: A63F9/16
Filed: 1922-02-04
Abstract: 192,915. Shears, F. H. Feb. 4, 1922. Trump indicators; teetotums.-A device for determining trumps or for similar purposes in playing card games comprises a teetotum having four U-shaped facets a marked with the symbols b of the four suits. The teetotum is pointed at the bottom d and provided with knob c at the top.