baber/WOPTO huggingface dataset:
Patent GB-731256-A (GB)
Title: Improvements in and relating to the manufacture of polymerisation products obtained from acrylic acid derivatives
Inventor: BLOOM GEORGE ISAAC MAURICE
IPC: C08F20/22
Filed: 1952-02-01
Abstract: Methyl alpha-chloroacrylate is polymerized in bulk in the presence of from 0.01 to 0.15 per cent of a compound containing the group <FORM:0731256/IV (a)/1> such as ethylene oxide, propylene oxide, epichlorhydrin, diallyl ether monoxide, and polydiallyl ether monoxide, which reduces the tendency of the polymeric products to develop pits or dimples on shaping at temperatures above their softening points.  The methyl alpha-chloroacrylate may be polymerized alone or in the presence of other compounds containing the vinylidene group, such as vinyl esters, ethers, and ketones, acrylic and methacrylic acids and their amides and esters, acrolein, styrene, and vinyl naphthalene. Polymerization may be activated by heat and/or light and catalysts such as organic peroxides and azo compounds, e.g. alpha, alpha1-azodiisobutyronitrile.  If desired the polymerization may be carried out in two stages by first polymerizing the methyl alpha-chloroacrylate to a syrupy form, and then pouring the syrup into a casting cell before continuing the reaction.  The colour stability of the polymeric products may be improved by heat-treatment at 100 DEG  to 140 DEG  C.  Specifications 572,767 and 586,715 are referred to.  The Provisional Specification describes also the application of the process to ethyl, propyl, and isopropyl alpha-chloroacrylates.
Patent GB-114322-A (GB)
Title: An Improved Rotary Pump.
Inventor: SHINER ALBERT EDWARD
IPC: F04C2/32
Filed: 1917-02-23
Abstract: 114,322. Shiner, A. E. Feb. 23, 1917. Movable - abutment type; discharge and suction passages for pumps.-A rotary pump of the kind comprising a sliding-rocking abutment J of pendulum shape mounted on an eccentric H keyed to a shaft G has an outlet for the fluid formed by a channel Q in the stem K' of the pendulum opening into the pump chamber at a point in the stem adjacent to the pendulum bob. The casing is provided with inlet and outlet ports P, R respectively. Instead of ending above in a cylindrical enlargement, the stem K<1> may slide between rocking segments housed in recesses in the slot B.
Patent GB-164072-A (GB)
Title: Improvements relating to loose-leaf devices for binding paper and similar sheets
IPC: B42F13/00
Filed: 1920-01-28
Abstract: 164,072. Cox, C. H. S., and Jones, P. H. Jan. 28, 1920. Post files; covers; attaching files to covers.- In an expanding-back loose-leaf binder in which all the parts are readily removable with the sheets, rods or tubes &c. 9 carry opposed sets i<1>, i<2> of filing-posts of length not greater than the minimum thickness of the leaves d and. are locked in position by the expanding slides a of the back b when the binder is closed and released by the operation of expanding the back. In the form shown, the back is expanded by the usual screw and toggle - link mechanism, and the clamping- bars have inwardly-directed lips f to engage the rods g.
Patent GB-1209294-A (GB)
Title: Improvements in or relating to controlled valve-type converters
IPC: H02M7/521
Filed: 1969-01-17
Abstract: 1,209,294. H.V.D.C. converter systems. NAUCHNO - ISSLEDOVATELSKY INSTITUT POSTOYANNOGO TOKA. 17 Jan., 1969, No. 2739/69. Heading H2F. In an H.V.D.C. system, wherein a plurality of three-phase bridge convertor units are connected in series on the D.C. side, a faulty convertor is shunted by simultaneously firing all the mercury arc rectifiers in series in one phase of the convertor bridge, instead of using a separate by-pass rectifier as in known arrangements. In normal operation firing pulses from a pulse generator (not illustrated) and at the A.C. system frequency, are amplified in a six-channel amplifier 5 (Fig. 1) and fed via a transformer 6, transformers 7, and resistor/capacitor networks 8 to the grids of mercury arc valves 1 (detailed in Fig. 2, not shown). In the event of a fault (e.g. backfire, misfiring, arc back &c.) a protection unit 9 which receives inputs B from current transformers 13, 14, 15 in the convertor circuit and an A.C. mains input C renders the valves in the faulty phase arm non-conducting and produces an output voltage at the mains frequency. This output is transmitted via two conducting channels in a sixchannel thyristor switch 10, transformer 11 and pulse circuits 12 to the grid networks 8 of the valves in a selected phase, i.e. one which is not faulty as determined by the protection unit 9. Thereby the selected valves are fired and shortcircuit the convertor for a brief period during which the fault conditions may be cleared. Each pulse circuit 12 (Fig. 2, not shown) comprises a transformer (31) which receives the said protection circuit output and resulting outputs from its two secondaries are respectively fed, one via a capacitor and one directly, to two auxiliary rectifier bridges serially connected on their output side and which apply a fluctuating D.C. voltage to the grid networks 8 of the two selected valves which are to act as a shunt.
Patent GB-451031-A (GB)
Title: Improvements in bullets
IPC: F42B10/22
Filed: 1935-01-28
Abstract: 451,031. Bullets. LEUBAZ, E., 8, Rue des PlantaperÛts, Geneva, Switzerland. Jan. 28, 1935, No. 2769. Convention date, Sept. 8, 1934. [Class 9 (i)] A bullet is made with a steel body 1 having a comparatively long ogival front end hardened and tempered and formed with at least three helicoidal grooves 3 uniformly distributed therearound, in combination with a copper belt 8 inserted flush in a recess around the part of largest diameter of the bullet and extending just behind the helicoidal grooves. Specification 17492/01, [Class 9], is referred to for a bullet of somewhat similar construction.
Patent GB-1457562-A (GB)
Title: Blowout preventers
IPC: E21B33/06
Filed: 1974-01-21
Abstract: 1457562 Wells &c HYDRIL CO 21 Jan 1974 02775/74 Heading E1F A blow out preventer comprises a resilient sealing member S having a curved inner surface adapted to engage a drill pipe or the like, a retainer plate 35 restraining the member and having an inner curved surface conforming with that of the member, and antiextrusion means E, F mounted on the plate and moved radially relative thereto by differential movement of parts of the seal and the plates. As shown the preventer is of the ram type having rams R, but the invention can also be applied to preventers of the annular type (Figs. 9-11 not shown). Each ram comprises a carrier plate 20, and plates 24, 25 having curved inner surfaces, a resilient seal 21, and a replaceable assembly A, comprising the member S, the anti-extrusion plates E, F, E', F' and the retainer plates 35, the anti-extrusion plates moving in grooves in the retainer plates and being bonded to the member S.
Patent GB-1197165-A (GB)
Title: Process for the Manufacture of Highly Chlorinated Solid Paraffins
IPC: C10G73/38
Filed: 1969-01-17
Abstract: 1,197,165. Chlorination of paraffin hydrocarbons. FARBWERKE HOECHST A.B. 17 Jan., 1969 [17 Jan., 1968], No. 2778/69. Heading C2C. Highly chlorinated solid paraffins are manufactured from a paraffin hydrocarbon containing 18 to 70 carbon atoms or a mixture of more than such hydrocarbon by chlorination with gaseous chlorine, wherein the paraffin or paraffin mixture is prechlorinated in the melt to a chlorine content of about 40% to 65% by weight, and then further chlorinated under a pressure within the range of 0.5 atmosphere gauge to 20 atmospheres gauge to a chlorine content of up to 75% by weight, the gaseous mixture above the liquid reaction mixture in the further chlorination stage being uniformly released from pressure at a rate slow enough to ensure a degree of conversion of the chlorine of at least 40%, while simultaneously introducing into the liquid reaction mixture an amount of chlorine required for maintaining the pressure in the gaseous phase within the aforesaid range.
Patent GB-263648-A (GB)
Title: Improvements relating to shaving stick holders
IPC: A45D40/02
Filed: 1926-02-01
Abstract: 263,648. Brown, R. Feb. 1, 1926. Soap tablets. - A holder, secured to a stick of shaving soap, is provided with one or more tabs, or members, which can be moved out of a collapsed position so as to project from the bottom of the holder to form a finger grip. As shown, two tabs 2 are attached to, or cut out of, the metal of the holder 1, and normally passed through and bent over a washer 3. When the stick has been nearly all used, it is pushed out of its case 4 and the tabs are bent at right angles to the holder, to form a finger grip for using the remainer of the stick. Preferably, the holder is formed with a raised bottom, to reduce the amount of soap remaining when the stick is worn down level with the holder.
Patent GB-702184-A (GB)
Title: Apparatus for the extrusion of plastic materials
IPC: B28B17/02
Filed: 1952-02-04
Abstract: 702,184. Extruding strings of plastic material. TITAN CO., Inc. Feb. 4, 1952 [Feb. 8, 1951], No. 22685/52. Class 87 (2) 'The material to be extruded, e.g. wet titanium dioxide pigment, is put into a shoot 11 having a perforated bottom 12, and the shoot is vibrated up and down, whereupon the material issues from the perforations in the form of strings 13. The shoot is carried by a fixed support 20 through the intermediary of leaf springs 21, and is vibrated by means of a rotary cam 22 acting on a bracket 23 secured to the shoot. The strings fall on to a conveyer 14 whey they form a thick bed. The perforations 12a at the forward side of the shoot are smaller than the perforations 12b at the rear side, whereby the thickness of the strings is made uniform (the rear thick strings thinning out as they fall). The lines of perforations are staggered. The perforations may be of the shape shown in Fig. 7. The conveyer 14 takes the strings through a drying chamber.
Patent GB-662778-A (GB)
Title: Improvements in electrical switchgear
Inventor: DAVIES DAVID REGINALD
IPC: H02B13/075
Filed: 1949-02-02
Abstract: 662,778. Switchgear structures. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Feb. 1, 1950. [Feb. 2, 1949] No. 2885/49. Class 38 (v). In an internally-isolated switchgear structure, an earthing contact 25 is so arranged that in the earthing position it extends across the path of the main movable contact 2 so that unless the latter has been separated from its cooperating contact 1, the contact 25 cannot complete its movement. In a three-phase arrangement, three contacts 25 are interconnected by insulating bars 26, 27, are pivoted at 29 and are connected by means or links 31, 35 and lever 32 to an operating handle 34. Each contact 25 has an indicator 44, having discs 45, 46, bearing the words "Earth off" and "Earth on", respectively, and visible through windows 47 in the front of the structure, so that when the contacts 25 move below the ends of contacts 2 into engagement with auxiliary contacts 36 connected to cables 10, the discs 46 are visible. The position of the main contacts is indicated by a member 19 having the word "off" on its sides, which are covered in the "on" position by tablets 21 on either side thereof and connected to the operating mechanism, these tablets preferably being inscribed "on". The contacts 25 are normally earthed by rods 38 pivoted to the contacts at 37 and engaging earthing clips 40, which may be pivoted to the Fig. 3 position, after a cover plate 20 has been removed, so that testing bushings 48 may be connected to rods 38. The cover 20 preferably has a window so that the positions of the upper ends of rods 38 are visible, and lugs are provided on the rear of the front face of the cover so that the latter cannot be replaced unless the clips 40 are in the Fig. 1 position. Specification 395,088 is referred to.
Patent GB-484743-A (GB)
Title: Improvements in mops, brushes, squeegees and the like
IPC: A47L1/06
Filed: 1937-02-01
Abstract: 484,743. Brush --handle attachments. MORGAN, F. Feb. 1, 1937, No. 2897. [Class 61 (i)] The handle 1 of a brush, mop, squeegee, &c. is secured to a sleeve 2 which terminates in a flat end 9 to which the brush &c. is secured and has anchored therein at 4 a spring 3 connected by a flexible wire or cord 5 passing round a pulley 6 and through an aperture 7 in the sleeve to a stirrup or foot-rest 8. In use, the foot is placed in the stirrup and the brush &c. pushed forward over the floor thus stressing the spring which aids the return movement of the brush.
Patent GB-438837-A (GB)
Title: Improvements in adjustable wrenches
IPC: B25B7/10
Filed: 1935-01-29
Abstract: 438,837. Wrenches. RAPINET, H. P., 87, Tachbrook Street, Vauxhall Bridge Road, London. Jan. 29, 1935, No. 2941. [Class 61 (iii)] An adjustable wrench comprises a fixed jaw 1 on a shank 2, a slidable jaw 4 with a leg 5 channelled at its rear end 6 to engage flanges 7 on the shank and a bifurcated lever 8 pivoted to the leg 5 on a pin 9 and pivoted on an adjacent pivot 11 to a dog 10 located in a gap in the leg 5 and influenced by a spring 13 to engage rack teeth 3 on the shank 2 ; in the lifted position of the lever 8 the front end 17 of the dog coacts with the rounded end 14 of the gap 12 to tilt the dog out of engagement with the rack teeth and in the gripping position of the lever the rear end of the dog is engaged by the other rounded end 15 of the gap 12 to lock the dog in engagement with the rack, the gripping movement of the lever imparting a final closing movement to the jaw.
Patent GB-250354-A (GB)
Title: An improved refractory material
IPC: C04B33/02
Filed: 1925-02-02
Abstract: 250,354. Grosvenor Scientific Products, Ltd., and Turner, B. Feb. 2, 1925. Refractory substances containing chrome ore, China clay, and soluble silicates are prepared by mixing chrome ore, which has been crushed to pass through a <1>/10 inch mesh, with China-clay and silicate of sodium or potassium, packing the mixture in a mould, submitting to pressure, removing and firing. The silicate preferably has a specific gravity of 1.6 and contains 2 parts of silica to 1 of soda or potash. The chrome ore may be Rhodesian chrome ore which is crushed and graded and particular proportions of the grades mixed together.
Patent GB-1291781-A (GB)
Title: Improvements in or relating to tools for use in percussive machines
Inventor: RABETT REGINALD GEORGE EDWARD
IPC: B25D17/11
Filed: 1970-01-21
Abstract: 1291781 Tools for use with percussive machines PADLEY & VENABLES Ltd 7 Jan 1971 [21 Jan 1970] 2957/70 Heading B4C A tool for use with a percussive machine comprises an elongate bar having a shank 1, a working head 3 and an intermediate stem 2, and a sound muffling collar assembly 6 having a length less than the stem and being secured thereto in the region of the mid-length part of the bar. The assembly comprises a layer 7 of elastomeric material, e.g. rubber, extending around the stem and a metal, e.g. steel, collar 8 which extends around the layer and the stem to retain the layer on the stem. The collar assembly is keyed to the stem to prevent longitudinal movement of the collar assembly relative to the stem, e.g. by means of an annular groove 5 (Fig. 1) or an annular rib 10 (Fig. 2). In the Fig. 2 embodiment the layer of elastomeric material comprises two semicylindrical moulded rubber elements each including a recess corresponding to the shape of the rib 10. The elastomeric material may additionally to the keying be adhesively secured or bonded to the stem. The weight of the collar assembly may be increased by embedding lead shot in the elastomeric material or by mixing lead dust with the material prior to moulding. The working head may comprise a point (as shown), or, for example, a spade or a chisel.
Patent GB-1097943-A (GB)
Title: Method for producing laminated plates of phenolic resins
IPC: C08L61/14
Filed: 1965-01-22
Abstract: Curable modified aromatic hydrocarbonformaldehyde resins are made by reacting from 5 to 70% by weight of an aromatic hydrocarbonformaldehyde resin with from 10 to 75% by weight of a phenol and from 20 to 80% by weight of a phenolic vegetable oil having at least one hydrocarbon chain of 15 to 17 carbon atoms. Specified aromatic hydrocarbons are toluene, o-, m- and p-xylene, mesitylene, naphthalene and alkyl-substituted aromatic hydrocarbons. Specified phenols are phenol, cresol, xylenol, isopropyl phenol, t-butyl phenol, octyl phenol, nonyl phenol, bis-phenol-A and phenyl phenol.  Specified vegetable oils are cashew nut oil, urushiol, lactol and thistiol.  The modified resins may be made by reacting the hydrocarbon formaldehyde resin with: (1) a phenol in the presence of an acidic catalyst, the product being reacted with the vegetable oil and formaldehyde in the presence of an alkaline catalyst; (2) the vegetable oil in the presence of an acid catalyst, the product being reacted with phenol and formaldehyde in the presence of an alkaline catalyst; (3) with phenol in the presence of an acidic catalyst, reacting the product with formaldehyde to form a resol which is reacted with (a) the vegetable oil, or (b) a mixture of the vegetable oil and a phenol, or (c) a reaction product of the vegetable oil and formaldehyde, or (d) a reaction product of the vegetable oil, phenol and formaldehyde; (4) a phenolic vegetable oil and formaldehyde as in (3), the product being further reacted as in 3(a), 3(b), 3(c) or 3(d); (5) a phenol as in (1), the product being reacted with either (a) a reaction product of the vegetable oil and formaldehyde, or (b) a reaction product of the vegetable oil phenol and formaldehyde; (6) the vegetable oil as in (2), the product being reacted with either (a) a reaction product of phenol and formaldehyde, or (b) a reaction product of a phenol, a vegetable oil and formaldehyde; (7) a phenol-formaldehyde condensate in the presence of an acid catalyst, the product being reacted with either (a) a vegetable oil and formaldehyde, (b) a vegetable oil, a phenol and formaldehyde, or (c) the product of reaction between the compounds in (a) or (b); (8) a phenolic-vegetable oil-formaldehyde condensate in the presence of an acidic catalyst, the product being reacted as in 7(a), 7(b) or 7(c); and (9) and (10) a condensation product of a phenol, a phenolic vegetable oil and formaldehyde in the presence of an acidic catalyst, the product being reacted with either (a) a phenol and formaldehyde, or (b) a phenolic vegetable oil and formaldehyde, or (c) a phenol, a phenolic vegetable oil and formaldehyde, (d) a product of reaction between the compounds in (a) or (b) or (c) or (e) formaldehyde.
Patent GB-1481492-A (GB)
Title: Bridge transporting and installing vehicle
IPC: E01D15/127
Filed: 1975-01-23
Abstract: 1481492 Bridge-laying vehicle DR ING h c F PORSCHE AG 23 Jan 1975 [25 Jan 1974] 3028/75 Heading E1G A bridge-laying vehicle for transporting and installing two super-posed deck sections 4, 5' includes a first placement device 13 for displacing a first section 5' longitudinally in one direction and a second rigid, non-extensible placement device 1 pivoted to the vehicle for displacing the second section 4 longitudinally in the opposite direction, the device 1 being connected to the section 4 by means of an arm 2 pivoted to the device 1. The arm 2 is formed by two parallel beams 2 each having a guide cam 12 which engages a guide track in the deck section 4. The beams 2 may be telescopic and they are releasably pivoted at 3 to the second placement device 1. In use, the upper deck section 4 is displaced to the right, the lower section 5' is displaced to the left so that the upper section can drop down to bring the sections into abutting relationship, and they are then interconnected.
Patent GB-417022-A (GB)
Title: Improvements in or relating to apparatus for receiving, storing and elevating materials, such, for example, as household refuse
IPC: B65F9/00
Filed: 1934-01-30
Abstract: 417,022. Elevating and storing material in bulk. VENIEN, T. J., 3, Boulevard TonnellÚ, Tours, Indre-et-Loire, France. Jan. 30, 1934, No. 3085. Convention date, Jan. 30, 1933. [Class 78 (i).] Household refuse or other material is delivered at 3 to the lower of two inclined chambers 2, 7, and is forced into the upper chamber 7 by an elevating device which may be a screw 1, the chamber 7 having its floor, or both floor and roof, formed by an endless band or apron 7, 8. The vanes or aprons 7, 8 may be driven to aid in elevating the material or they may be moved by the passage of the material, thus serving to reduce friction. The material is discharged into hoppers 17 for utilization or treatment, and the apparatus may be movable on rails 16 16<1>, or about a pivot 16, to serve a range of hoppers. The bands 7, 8 may be driven at different speeds.
Patent GB-561795-A (GB)
Title: Improvements relating to the rotors of electricity meters, small motors and the like
IPC: G01R11/12
Filed: 1943-02-25
Abstract: 561,795. Dynamo-electric machines. MEASUREMENT, Ltd., BATT, F. H., and CLIFFORD, C. F. Feb. 25, 1943, No. 3122. [Class 35] [Also in Group XXXVI] Means for the magnetic suspension of the rotor of an electricity meter, small motor, or the like comprises a permanent magnet having one pole of the order of 1 or 2 mm. in length projecting from the side of a mass of high coercive force alloy, the peripheral edge of which forms the other pole, there being a similar pole projecting from a mass of magnetic material at the end of the rotor shaft. A permanent magnet a, above and coaxial with the rotor shaft b, consists of a cylindrical disc of a magnetised high coercive force alloy and has a short soft iron polepiece c projecting axially from its underside. The face of the polepiece may be rounded. A similar disc d and short polepiece e is provided on the rotor shaft, but this disc may be made of permanent magnet material or of soft iron, mild steel &c. The end face of one or both polepieces c, e may be plated with non-magnetic material. The approach of the polepiece e to the polepiece c is limited by a pintle k secured to a screw m which threads into a non-magnetic part n on to which the polepiece c threads, this polepiece being a fit in the magnet a. The part n threads into a fixed bracket o and is locked by a nut p. The gap between the polepieces c, e is initially set by threading the part n through the bracket o. Nuts q, r on the screw m can be locked together in any desired position to determine the gap between the bottom of the pintle k and the bottom of a recess in the polepiece e. The polepiece c may be proportioned or constructed (as by being recessed or necked) so that it is magnetically saturated and there is, therefore, only a negligible increase in flux as the poles approach one another. The polepieces may be formed of a powdered metal product.
Patent GB-908766-A (GB)
Title: Electromagnetic vibrator
IPC: H01H50/76
Filed: 1961-01-27
Abstract: 908,766. Electromagnetic interrupters. MORLE, C. W. (Oak Manufacturing Co.). Jan. 27, 1961, No. 3240/61. Class 38 (5). [Also in Group XXXV] A vibrating reed interrupter for D.C.-A.C. conversation has one or more magnetic shunts including a polepiece adjacent the pole of the energizing electromagnet and mounted so as to vibrate on energization so as to maintain a constant frequency of vibration of the reed owing to increased flux by-passed by the shunt as the energizing voltage increases. As shown, a vil rator generally similar to that described in Specification 460,470, has two shunts each comprising a soft iron bracket 47 secured to the magnet frame 16 and a ferromagnetic angle piece 37 having a spring portion 38 and polepiece 40. The latter extend through holes 50 in the frame 16 to the vicinity of the pole 33 of the electromagnet 27 and armature 32.