baber/WOPTO huggingface dataset:
Patent GB-1061172-A (GB)
Title: Process for the production of carboxylic acid esters
IPC: C07F7/00
Filed: 1964-02-20
Abstract: Carboxylic acid esters are prepared by reacting carboxylic acids, anhydrides, or esters or a combination thereof with compounds containing at least one alcoholic hydroxyl group, in the liquid state at elevated temperature in the presence of catalysts which contain titanium peroxides, and with the immediate removal of the water from the reaction mixture.  Examples describe the preparation of di-(2-ethylhexyl)-phthalate and isophthalate, di-(n-octyl)-adipate, tri - (2 - ethylhexyl) - trimellitate, the decyl ester of tall oil fatty acid, an ester of 1,2-propylene glycol and adipic acid, esters of 1,2-propylene and adipic acid and maleic anhydride, an ester of soya oil and pentaerythritol which is further reacted with phthalic and maleic anhydrides. The titanium compounds may be of formula Ti(OR)4 in which R represents an OH group or metal oxide and their preparation in hydrated form as gels is described (see Division C1).ALSO:Titanium peroxy compounds, Ti(OR)4, in which R represents an OH group or a metal oxide, are prepared by treating titanium containing minerals, e.g. rutile, ilmenite or bauxite slurry, with concentrated sulphuric acid, addition of an oxide, sulphate, or carbonate of a divalent metal to an acid solution to form titanium salts which are hydrolysed at normal or elevated temperatures in the presence of peroxides and/or per compounds. Hydrogen peroxide and its salts, persulphates, percarbonates, perchlorates, periodates, benzoyl peroxide, ozone or atomic oxygen may be used.  Gels may be formed when using ammonium or alkali hydroxides in the presence of the peroxides and/or peroxy salts. In an example titanium tetrachloride is introduced to methanol, and the product added to a mixture of methanol, 25% ammonia, and 30% hydrogen peroxide and a precipitate of peroxytitanic acid is washed and separated to yield a yellow peroxytitanic acid powder containing 40% of water.  The compound is used as a catalyst in the preparation of carboxylic acid esters (see Division C2).
Patent GB-401939-A (GB)
Title: Improvements in bases for electric switches
IPC: H01H23/16
Filed: 1933-03-10
Abstract: 401,939. Tumbler switches. BAIN, R., 25, Beaudesert Road, Handsworth, Birming- ham, and ALLDAY, N., The Nest, Streetly Lane, Four Oaks, Warwickshire. March 10, 1933, No. 7272. [Class 38 (v).] A tumbler switch has a movable contact bridge 15 of the form shown in Fig. 3 pivoted on a pin 29 and movable in a plane parallel to the plane of the base. The contact bridge 15 is operated by a tumbler 16 through the medium of a telescopic link having a deadcentre compression spring 42. Sparking between the fixed contacts 14 and the operating mechanism is reduced by the provision of an upstanding wall 43 which encloses the operating mechanism. Further projections 48, 49 prevent sparking on to the fixing screws 47. Specification 398,322 is referred to.
Patent GB-745995-A (GB)
Title: Improvements in and relating to collapsible chairs
IPC: A47C4/22
Filed: 1954-03-12
Abstract: 745,995. Adjustable chairs. AEROTHERM CORPORATION. March 12, 1954 [Dec. 16, 1953], No. 7286/54. Class 52(2). In a chair having a back 48 pivoted at 52 to the seat frame 12 and a fixed armrest 4, the back is held in adjusted position by a friction clamp located in the armrest, releasable by a press-button 76 and acting on a link 58 extending into the arm rest and pivoted to the back at 60. Link 58 slides within a channel 56, Fig. 6, in the arm-rest and is formed with a rack 58 engaging a pinion 62 the shaft 64 of which carries a drum 66 braked by several turns of a cable 68. This cable is adjustably anchored at one end 70 to the channel 56 and is pivotally connected at the other end to the spindle 74 of the press-button 76. A spring 82 urges the button and cable to locking position. A spring 84, which is just strong enough to urge the link 58 to the right against the friction of the cable when button 76 is actuated, restores the back to upright position. The arm rest is pivoted at 90 to the upper end of a rod 36 pivoted to the seat frame 12 at 88. Rod 36 carries a pin 40 which can be engaged in recess 44, Fig. 8, formed between jaws 22, 24 carried on a brace 18 and urged together by a spring 34. When the pin is forced from the recess, the arm rest and back can be folded down to the dotted-line position of Fig. 4. The leg assemblies of the chair may fold to lie under the seat.
Patent GB-622354-A (GB)
Title: Means for forming concrete floors or the like
IPC: E04C3/14
Filed: 1947-03-17
Abstract: 622,354. Casting concrete floors &c. SYMONDS, R. March 17, 1947, No. 7287. [Class 20(ii)]  Temporary supports for making concrete floors comprise a number of posts 15 carrying at the top swivelling cradles 8 supporting a number of parallel hollow bearers 5 which support plywood &c. sheeting.
Patent GB-1193021-A (GB)
Title: Improvements in or relating to Personal Suspension Harnesses
IPC: B64D17/30
Filed: 1968-02-15
Abstract: 1,193,021. Parachute harness. O. W. NEUMARK. 15 Feb., 1968, No. 7356/68. Heading A3V, A parachute harness including a seat portion 10 and adapted for securement around the body and over the shoulders of the wearer 11, 13, 16, is characterized in that the seat portion and shoulder strap portions (or lift webs detachably connected to the latter) are provided at opposite sides with rings or links 20, 21 through which an adjustable cord or webbing loop 22 can be passed, this loop being to receive the feet of the wearer and to allow him to assume a near-supine position. The links 20, 21 may be D-rings located on the harness by fabric bands. A second loop 23 may be provided to assist the placing of the feet in loop 22. The harness may be incorporated in a flexible envelope adapted to enclose the body of the wearer, the wall of which may be of heat insulating material and/or inflatable, Fig. 8 (not shown).
Patent GB-279701-A (GB)
Title: Improvements in packing rings for bearings and the like
IPC: F16J15/38
Filed: 1927-03-17
Abstract: 279,701. Evans, W. P. March 17, 1927. Addition to 266,479. Stuffing-boxes, substitutes for.-In packing for rollers, &c. of the type claimed in the parent Specification, comprising a ring A attached to the stationary part, a ring C bearing against a rotating shoulder, fibrous packing F and a spring-pressed ring E, the rings being of larger internal diameter than the shaft, the rings C, E are arranged outside the ring A, instead of inside. Relative rotation of the rings may be prevented by pins.
Patent GB-650093-A (GB)
Title: Improvements in and relating to a method for producing posts, beams and like structures of concrete and the products so obtained
IPC: B28B23/06
Filed: 1947-03-21
Abstract: 650,093. Moulding prestressed concrete posts, beams, &c. WEINBERG, V. March 21, 1947, No. 7784. Convention date, March 23, 1946. [Class 87 (ii)] [Also in Group X] A reinforcing skeleton that is to be embodied in a concrete post &c. comprises terminal blocks 1, 2, Fig. 1, to which the reinforcing wires 7 are anchored, and a medial block 3 having channels through which the wires 7 pass. Other reinforcements 8 are anchored to the blocks 1 and 3. This skeleton is placed in the mould, the blocks are pulled apart to stress the reinforcement, and concrete is cast into the spaces between the blocks. Fig. 3 shows a modified skeleton having a medial block in which the channels are not straight, the reinforcements conforming to the outline of the article to be cast. The wires may be anchored to the blocks either by embedding, as shown, in which case the embedded ends may have various shapes (Figs. 6 and 7, not shown), or by winding the wires around the blocks.
Patent GB-1174577-A (GB)
Title: Improvements in or relating to Bituminous Emulsions
Inventor: GREATOREX NEVILLE HILL
IPC: C08K5/17
Filed: 1966-01-27
Abstract: 1,174,577. Bitumen emulsion. THOMAS SWAN & CO. Ltd. 16 Jan., 1967 [27 Jan., 1966; 22 Feb., 1966], Nos. 3824/66 and 7820/66. Heading B1V. [Also in Divisions C2 and C3] A bitumen emulsion has as emulsifying agent a composition comprising two cationic emulsifiers: (i) a first emulsifier which has a primary or secondary amine group in the molecule and (ii) a second hydrophilic emulsifier which contains more than two primary or secondary amine groups per molecule. The emulsifiers may be prepared separately or together by reacting a fatty acid, fatty acid oil or fatty acid ester or a mixture of these with, for (i), a polyamine containing two or three amino groups, e.g. ethylene diamine or diethylene triamine, or for (ii) a polyamine containing more than three amino groups, e.g. pentaethylene hexamine, or for a mixture of (i) and (ii), a polyamine mixture, e.g. one containing diethylene triamine and pentaethylene ,hexamine in weight ratio 0.2:1 to 5:1. The emulsifying composition may contain methyl cellulose.
Patent GB-316157-A (GB)
Title: Improvements in and relating to draw leaf and similar tables
IPC: A47B1/05
Filed: 1928-03-14
Abstract: 316,157. Angus & Co., Ltd., W., and Wentworth, H. T. March 14, 1928. Expanding tables.- In extending tables of the kind with draw-out endleaves, the centre section is lifted bv means fitted on the draw leaf, which mav then be drawn out by these means. As shown on the right-hand side of Fig. 1, there is mounted near the rear edge of the draw leaf a a pair of upright levers b connected by a link e. Cne of the levers is on a pivot rod g, and both are operated by a handle h so as to raise the main table-top sect.on d, indicated by dotted lines, away from the draw leaf a, which may then be drawn out. The section d is then dropped to the level of the leaf a. The draw leaf a is mounted on a pair of runners m which pass through slots in the end members n. They are also guided by pins p, engaging slots in the sides of the runners m, the pins being mounted on battens r under the table. A strip s strengthens the table and limits the movement of the leaf a. In the left-hand s de of Fig. 1 is shown a construction comprising a pair of Levers w pivoted at x and carrying a cross-strip y. A groove z receives a spindle carrying a pair of rollers 10, and the outer ends of the levers w have a spindle 11 with lever members 12 and a knob 13, by means of which the outer ends of the lever w mav be held depressed, while the inner ends, with the rollers 10 may be raised, thus raising also the main table top section d. The leaf a may then be withdrawn. In another modification, the parts 12, 13 are replaced by a pivoted finger.
Patent GB-1220945-A (GB)
Title: Lubricated bearing assembly and method of manufacturing it
IPC: F16C33/10
Filed: 1968-02-19
Abstract: 1,220,945. Bearings; lubricating. PERMAWICK CO. Inc. 19 Feb., 1968 [28 Feb., 1967], No. 7976/68. Heading F2A. A wick-lubricated bearing 9 has a shaft 10 mounted therein; has an aperture 14 which receives a plug 15 therein, the plug serving to convey lubricant from wicking material to the shaft 10 and thus to the bearing 9 and also serving as a filter to prevent wicking material from entering the bearing; and is supported by an inner annular part 11 of a housing. The housing has a number of circumferentially spaced radial arms 13 which connect the part 11 to an outer annular part 12 and has lubricantimpregnated wicking material 24 injected therein. The housing may be provided with covers 17 and 22 and the shaft has a lubricant - slinger 28 mounted thereon. When the shaft rotates the bearing is lubricated by lubricant from the wicking material being passed through the plug 15 and deposited on to the shaft. The lubricant escaping from the bearing is returned to the wicking material 24 by means of the slinger 28.
Patent GB-319029-A (GB)
Title: Improvements in or relating to the manufacture of golf balls & apparatus therefor
IPC: B29D99/00
Filed: 1928-03-16
Abstract: 319,029. Dunlop Rubber Co., Ltd., Willshaw, H., and Goodhall, S. N. March 16, 1928. Moving-chamber apparatus. Apparatus for dispensing measured quantities of gutta-percha &c. solution comprises a jacketed hopper 7 fitted with stirring blades 7<b> below which is disposed a worm 8 adapted to force the solution into a pipe 8<c> fitted with a measuring-device consisting of a disc having a diametral bore 9<b> fitted with a piston 9<a>, the disc being oscillated through 180‹ by a rack 9<e> driven by a crank rod 10. The blades 7b are carried by a bridge 7<c> secured to a spindle passing through a tube 7<g> supporting an upper bearing situated above the level 7<h> of the solution. The solution is delivered through a nozzle 9<c>.
Patent GB-710350-A (GB)
Title: Improvements in and relating to electrical control or regulating systems
Inventor: HALL COLIN CHARLES
IPC: G05D23/30
Filed: 1951-04-06
Abstract: 710,350. Thermal switches. SUNVIC CONTROLS, Ltd. March 27, 1952 [April 6, 1951], No. 8050/51. Class 38(5) [Also in Group XXXV] In Fig. 2 a thermal switch employed in an automatic temperature control system for a furnace (see Group XXXV) comprises two bimetallic strips 8 and 9 bolted to an insulating base 30 and carrying cooperating contacts 5 and 6. A heater winding 7 for strip 8 is energized by the control current and snap action is produced by a permanent magnet 37, carried by strip 8, co-operating with an armature 41 of magnetic material carried by strip 9. Contact 6 is carried by a spring blade 39 bolted to armature 41 at 40 and bent over armature 41 at 43 to limit relative movement. A winding 15 for strip 9 is connected in series with the contacts and may be arranged to compensate the differential to any desired extent. The position of armature 41 relative to magnet 37 when contacts 5 and 6 are closed is adjustable by a screw 35 to set the differential. The relative position of strips 8 and 9 may be adjusted by a screw 34.
Patent GB-667843-A (GB)
Title: Improvements relating to ladders
IPC: E06C7/08
Filed: 1950-03-31
Abstract: 667,843. Ladder rungs. LLOYD'S CYCLES, Ltd., W. A., and KING, J. LAWSON-. June 1, 1950. [March 31, 1950]. No. 8071/50. Class 20(ii). In a ladder the end 3a of a cylindrical tubular metal rung 1 is non-circular and is received in a non-circular aperture 12 in the outer wall 10 of the hollow stile. The rung is of softer metal than the stile and the projecting extremity of the rung is upset by a spinning tool to an interior circular form so that projecting portions 13 of the stile aperture are embedded in the rung wall. The aperture in the inner wall 9 is circular and engages a circular part of the rung which is formed with a shoulder 5 to locate the rung longitudinally against the stile. The stiles shown are of rectangular section. Modifications show other sections of rung ends of non- circular shapes. In one modification the end of the rung is circular but part of the metal thereof is upset into a keyway in the aperture in the stile.
Patent GB-564857-A (GB)
Title: Improvements in or relating to thermostatically controlled gas cookers and the like
IPC: G05D23/02
Filed: 1943-05-22
Abstract: 564,857. Gas cooking stoves. GENERAL GAS APPLIANCES, Ltd., and BENNETTS, H. C. W. May 22, 1943, No. 8155. [Class 126] In a gas cooker fitted with a thermostaticallycontrolled gas valve g, the heat-sensitive element f of the thermostat is located outside the oven e in a byepass tube a through which part only of the hot gases from the oven flow. As shown, the tube a is arranged above the oven at one side of the space below the grill burner and communicates with the interior of the oven through a vertical tube b. The gases passing into the tube a may either escape to atmosphere through a valved outlet k or return to the oven through a second vertical tube c ; by suitable setting of the valve k escape to atmosphere and return to the oven may take place simultaneously.
Patent GB-781563-A (GB)
Title: Improvements in or relating to time division multiplex communication systems
Inventor: HARRIS LIONEL ROY FRANK
IPC: H04Q11/04
Filed: 1952-01-01
Abstract: 781,563. Automatic exchange systems. POSTMASTER GENERAL. Dec. 17, 1952 [Jan. 1, 1952], No. 8191/57. Divided out of 781,561. Drawings to Specification. Class 40 (4). Groups of subscribers to an automatic exchange are connected via gates to multiplex paths individual to the groups, the said paths being interconnected by gate circuits, and communication between subscribers in different groups is established by synchronously pulsing both subscribers' gates and the appropriate intergroup gate circuit. The description is identical with part of that of Specification 781,561, which claims other features. Specifications 707,379, [Group XL (c)], 718,262, 718,269, [Group XL (c)], 722,179, 781,562 also are referred to, and Specification 770,616 is referred to in the Provisional Specification.
Patent GB-297645-A (GB)
Title: Retread mould for tires
IPC: B29D30/54
Filed: 1928-03-17
Abstract: 297,645. Gill, H. A., (Super Mould Co.). March 17, 1928. Moulding tyres.-A re-treading mould for tyres comprises a pair of matching circular sections adapted to be secured in closed relation round the tyre and provided with axially-movable means for engaging the outer surfaces of the side walls of the tyre to expand the tread against the inner surface of the mould. Thus two ring-shaped members 3, one of which is fixed and the other movable are moved bodily on horizontal slides 7 by the screw 11 to enclose the tyre. A set of spacing-members 14 with a corresponding set of matrices 17 to accommodate various patterns and widths of tyres, are provided. In operation, the tyre is placed on a rim 24 and set up in position against the fixed member 3, the proper matrix and spacing-member are inserted, and the members 3 closed together by the screw. Screw clamping stirrups 19 then are positioned and tightened to lock the mould members in position. Finally, to expand the tread against the inner surface of the mould, the tyre is partly inflated and a pair of guided annular rings 26 are moved axially by screws 31 to force the outer surface into all-over engagement with the matrix 17. Finally steam is passed through the hollow members 3 and 14 to perform the vulcanizing operation.
Patent GB-576624-A (GB)
Title: Improvements in or relating to material-handling implements
IPC: E02F3/34
Filed: 1943-05-24
Abstract: 576,624. Escavators. RUSTONBUCYRUS, Ltd. May 24, 1943, No. 8226. Convention date, May 1, 1942. [Class 68 (i)] [Also in Group XXX] The scoop 29 or dumping bull-dozer blade is carried on a tractor or wheeled frame 11 by two arms 16, the rear ends of which are guided in an arcuate path A, C, as by links 15 pivoted to the tractor, the front ends of the arms being guided in a vertical path as by a guide 23 and lifting means 20 applied between the ends of the arms. The tractor 11 is pivotally attached at 12a to the traction frames 12 at each side, being supported by springs at the front, and carries brackets 14 on which links 15 are pivoted at 13. The pusher arms 16 are pivoted to the links and carry rollers 22 riding in the vertical guides 23 fixed to the tractor. Fluidpressure rams 20 act between trunnions 18 on the arms and supports 21 on the traction frames 12. The guides 23 are braced by a stay 25 and flared at their lower ends, the rear portion terminating short of the bottom stop 24 so that with the arms in the lowermost position, for digging, the thrust is not taken by the guides but by the links 15 abutting a stop 27. The parts are so arranged that the reactions of the lifting rams 20 transmitted to the tractor 11 by the links 15 and guide 23 are substantially equal and opposite to prevent tilting. The scoop 29 is released for dumping by a catch 32 and chains 30 with springs 31 control the dumping tilt.
Patent GB-546105-A (GB)
Title: Improvements relating to permanent shuttering units for use in building construction
IPC: E04C2/34
Filed: 1941-07-02
Abstract: 546,105. Walls. CLARKE, T. F. W. July 2, 1941, No. 8320. [Class 20 (iv)] Wall-building units consist of inner and outer sheets 2 connected by internal metal ties 3 and filled with concrete or the like. The sheets 2 may be of metal, asbestos-cement, plastic material, corkboard, fibreboard, plywood, or glass. Metal mesh, expanded metal, sheet metal or wire may be used for the ties, connection being effected by welding, riveting, embedding, fusing, cementing, screwing, stitching or stapling. The sheet-edges are ridged or grooved to interengage, and the ties are formed with slotted projections to engage those of adjoining units.
Patent GB-772202-A (GB)
Title: Improvements relating to butt welding of light metal pieces
IPC: B23K9/035
Filed: 1955-03-22
Abstract: 772,202. Welding by fusion; making plates &c. SOC. ANON. POUR L'INDUSTRIE DE L'ALUMINIUM. March 22, 1955 [March 23, 1954], No. 8323/55. Classes 83 (2) and 83 (4). One of two light metal, e.g. aluminium or an alloy thereof, members 1, 4 which are to be buttwelded by a flame or an arc is formed, e.g. by extrusion, with a channel-shaped projection 2 which extends below the edge to be welded and serves as a backing to retain the weld metal. Inert gas shielded arc welding may be used and longitudinal butt welds on long hollow bodies may be made in this way.
Patent GB-841191-A (GB)
Title: Improvements in or relating to apparatus for testing electric transmission lines
Inventor: CAMERON WILLIAM ALFRED
IPC: G01R27/02
Filed: 1956-03-16
Abstract: 841,191. Duplex radio signalling; logarithmic amplifiers; pulse-echo testing apparatus; pulse generators; valve amplifying circuits. PIRELLIGENERAL CABLE WORKS Ltd. Jan. 18, 1957 [March 16, 1956], No. 8362/56. Classes 40(5), 40(6) and 40(7). In electric pulse-echo transmission line testing apparatus the echoes are logarithmically amplified before indication. In the embodiment duplexing is afforded by hybrid network 3 and the echo amplitudes are indicated on electrostatic cathode-ray (C.R.) tube display 8. Pulse generator 4 is triggered by positive-going pulses from time-base 9. After differentiation by network 76, 77, Fig. 6, the pulse leading edge triggers the blocking oscillator circuit of valve 84 whose output pulse at terminal 92 is of "sinesquared" form; its amplitude may be controlled by varying inductances 85, 89, its leading edge shaped by varying either inductance and capacitor 88 and its trailing edge shaped by varying capacitor 91. The hybrid network comprises a bridge circuit including equal resistors 95, Fig. 7, pulses from the generator being applied at terminal 94 the coaxial cable under test being connected to terminal 96, the matching termination to terminal 97 and the echo signal amplifier to terminal 99. The matching termination is so adjusted that no current flows through terminal 99 when a pulse is applied at terminal 94. The logarithmic echo amplifier comprises a pentode circuit feeding a cathode follower the interstage coupling including pairs of oppositely-connected crystal rectifiers operating over that portion of the characteristic where the instantaneous amplitude of the output voltage is proportional to the logarithm of the current passed, Fig. 4 (not shown). The dynamic resistance of the rectifier combination is made low to give wide-band operation by employing three pairs of rectifiers. Amplifier 5 includes a cascade input circuit, Fig. 5 (not shown).