baber/WOPTO huggingface dataset:
Patent GB-1171822-A (GB)
Title: The Preparation if Polyesters by the Polymerisation of beta-Lactones
IPC: C08G63/82
Filed: 1967-01-18
Abstract: 1,171,822. Polymerizing #-lactones. MONTECATINI EDISON S.p.A. 18 Jan., 1967 [21 Jan., 1966], No. 2745/67. Heading C3R. Polyesters are made by polymerizing certain #-lactones whilst suspended in an inert liquid in the presence of a catalyst which is at least partially soluble in the organic liquid and comprises one or more halides of the elements Cu, Zn, Cd, Hg, B, Al, Ge, In, Ti, Sn, Pb, P, V, Sb, Bi, As, Fe, Co and Ni or one or more complexes of these halides with halogenated organic compounds. The #-lactones are those of formula where R and R<SP>1</SP> are hydrogen atoms, or alkyl, haloalkyl, aryl, haloaryl or nitroaryl groups except that both R and R<SP>1</SP> cannot be hydrogen atoms. Polymerization is effected at -180 to + 50 C. under anhydrous conditions and under an atmosphere of an inert gas. The inert organic liquid is preferably a paraffin or cycloparaffinic hydrocarbon. Examples describe the polymerization of # - methyl - propiolactone, # - isopropyl -# - propiolactone, # - isobutyl-#- propiolactone, # ,# - dimethyl - # - propiolactone, # - chloromethyl - # - methyl - # - propiolactone and #-methyl.#-butyl-#-propiolactone.
Patent GB-161737-A (GB)
Title: Improvements in rotary duplicating machines
IPC: B41L19/00
Filed: 1920-01-29
Abstract: 161,737. Rushworth, G. A. W. Jan. 29,1920. Rotary machines; stencilling - apparatus; addressing-machines; printing-surfaces; inking- apparatus.-In rotary duplicating-machines of the type provided with means whereby other matter may be printed in addition to the matter printed by the body of the machine, the additional printing-means is separately inked and may be held in any position on the main printing- cylinder, so that the additional printed matter may occupy any position relative to the main printed matter, and may be in a different ink or colour. As shown in Fig. 1, the main printing is done through a ribbon A free to slide between the auxiliary plate and cylinder, the former consisting of an electrotype plate C having projections c which engage the type-slots b in the cylinder. A cam C' integral with, or fixed relatively to, the auxiliary plate, engages a runner d controlling a separate inking-device D pivotally mounted at d', the separate inking-device being returned by a spring d<3> after the cam-surface has left the runner. Loose type may be used in the auxiliary plate, or, as shown in Fig. 12, rubber type formed on a metal plate may be employed, and the main printing may be done through a wax stencil. As shown in Figs. 8 and 9, the plate C is provided with pins e<2> for engagement with holes in the side of the cylinder, and may be held in position by springs e<3>. The inking- device may be geared to and driven from a rotating part of the machine, and may have a single roller instead of two as shown.
Patent GB-1105786-A (GB)
Title: A method and apparatus for producing a continuous rod of loose fibrous material
Inventor: NESTLER WALTER
IPC: A24C5/18
Filed: 1966-01-21
Abstract: 1,105,786. Feeding tobacco. TABAKUND INDUSTRIEMASCHINEN DRESDEN VEB. 21 Jan., 1966, No. 2806/66. Heading A2C. Tobacco fed from a hopper 3 via a vertical pipe 4 to a chamber 5 is entrained in an air stream issuing from a horizontal nozzle 6 and conveyed by a pipe 7 to a rod forming device 9 having a perforated plate 11 which radially compacts the tobacco stream and allows the major proportion of air (about 75%) to escape through outlets 13. The tobacco stream then passes through a pipe 14 to a system of suction conveyers where it is longitudinally compacted to form a rod. The suction conveyers may comprise endless perforated bands 15 and 16 which travel over suction boxes 19. The guide roll 20 associated with the band 15 may also have suction applied thereto. Alternatively, the bands may be replaced by a grooved roller around a portion of the periphery of which runs a perforated band, the roller being enclosed in a space to which suction is applied, Fig. 6 (not shown). Suction may be applied to the chamber 5 via outlets 8.
Patent GB-388191-A (GB)
Title: Improvements in pocket knives embodying double bow scissors
IPC: B26B11/00
Filed: 1932-02-01
Abstract: 388,191. Pocket-knives and scissors. MOODY, W. F., 13, Church Street, Romsey, Hampsbire. Feb. 1, 1932, No. 2900. [Class 30.] In a pocket-knife embodying folding scissors, one scissor shank X has a fixed bow A and the other Y is pivoted to the knife handle at D, its separate bow C being likewise pivoted at D and held in the operative position shown and also in the dotted closed position by a spring clip E struck up from or riveted to the knife handle. The bow C may close within or outside the knife handle. A rivet &c. on the shank Y may engage the bow C to facilitate opening and closing of the scissors. The knife handle may be pear-shaped, as shown, on one or both sides. The blades may be pivoted at either end and their springs are of slit steel. The stops for the blade points &c. may be grooved to hold pickers, tweezers, &c. The blade handle may be marked with scale divisions.
Patent GB-212701-A (GB)
Title: Improvements in or relating to sound recording and reproducing machines
IPC: G11B19/265
Filed: 1923-01-31
Abstract: 212,701. Rogers, H. A. Jan. 31, 1923. Sound-boxes, mounting; speed regulating; tone-arm joints.-Relates to machines in which the linear speed of the record under the needle is maintained constant by means of a centrifugal governor driven by a wheel which is in frictional contact with the record and follows the movement of the sound box. According to the invention, the rolling wheel 1, Fig. 1, which makes contact with the record 16, is connected by a helical gear 3 to the spindle 4 of the governor 9; and these parts are carried by a box 10, which is hinged to the side of the sound-box 14, Fig. 6, and is pivoted to a swinging link 13 or slidably mounted on a radial rod 17, whereby it is maintained tangential to the record track while it follows the travel of the sound-box. The soundbox may itself be hinged to the tone-arm. In a modification, the box or frame carrying the governor is hinged about the connection between the sound-box and the tone-arm, and the roller is maintained substantially in radial alignment with the needle. The roller may be bevelled and disposed in an inclined position on the record. The worm wheel and the roller may be made in one. The tread of the roller on the record may then be provided by rubber blocks between the helical teeth, or by a rubber band wound round the rim of the roller between the teeth, or bv an endless band 11, Fig. 3, removed from the roller 1 bv guide pulleys 12 where the worm wheel engages the worm on the governor spindle 4.
Patent GB-291424-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G4/28
Filed: 1928-01-30
Abstract: 291,424. Hermsdorf-Schomburg-Isolatoren Ges. June 4, 1927, [Convention date]. Condensers, particularly for wired wireless or other high tension purposes, comprise a relatively thin walled hollow porcelain body of a shape similar to that of a lead-in insulator and provided interiorly and exteriorly with metallic sheathing. The porcelain body 1 is provided with upper and lower openings 2, 3, closed by sealed covers 4 to which are connected current leads 5, 6 from which extend metal sheathings 7, 8 terminating in gutters 12 for improving the voltage distribution along the porcelain surfaces. An oil filling 9 is provided, but in a modification this is dispensed with by closing the body 1 at the lower end, the sheath 7 in this form covering the whole inner surface. The outside of the body has the usual petticoats, and the interior has ribs 11 for increasing the creepage path. The inner sheath need only extend to the point 12 and may be connected by a lead to the upper cap.
Patent GB-193638-A (GB)
Title: Improvements in or relating to sextants
IPC: G01C1/10
Filed: 1922-02-01
Abstract: 193,638. Booth, L. B. Feb. 1, 1922. Sextants.-In a sextant in which the object and the horizon or a bubble are viewed superposed with the whole pupil of the eye and in which the fields do not appreciably separate when the eye is moved, a transparent or partly-silvered plane reflector 10 fast on a pivoted index arm 11, is used with a fullysilvered reflector 12 fast on the frame 13. The arm 11 carries a vernier 15 and a tangent screw 16, Fig. 9, on the shaft of a graduated micrometer head 33 operated through bevel gearing 34, 35, from a milled wheel 36, and a release 47 for the tangent screw is provided. The reflectors 10, 12 are arranged to be parallel when the vernier and micrometer readings are zero. A frame carrying a bubble container and optical elements for viewing the bubble is pivoted at 39 to the frame 13 and is held by a spring against a stop. The size of the bubble may be adjusted from a wheel 45, Fig. 1, controlling a diaphragm 44. The bubble is disposed beneath a lens 18 with a concave lower surface and the container is bounded below the bubble by a glass 23. The bubble is viewed through an objective 19 after reflection at mirrors 20, 21, the latter being adjustable by a screw 49. In using the instrument the sun is viewed by reflection at the surface 10 while viewing the horizon of the bubble through the surface 10 by reflection at the surface 12. Shade glasses 38, 46 are provided. For stellar observations, the star is viewed through the surface 10 from below, and the bubble is seen by reflection at the surface 10. The bubble is illuminated by an electic lamp 25 in conjunction with a plane unsilvered or partly-silvered glass 24 mounted above the bubble lens 18 at about 45‹ to the lens axis, and a rheostat adjusted by a hand-wheel 27, is provided in the lamp circuit for varying the illumination. The vernier 15 and the micrometer head 33 are illuminated by an electric lamp 28 located in the handle 9, and arranged in parallel with the lamp 25.
Patent GB-422152-A (GB)
Title: Improvements in or relating to shovelling or excavating machines
IPC: A63H17/12
Filed: 1934-01-29
Abstract: 422,152. Model machines. BRYANT, F. J. N., 133, Wellington Road, East Ham, London. Jan. 29, 1934, No. 2952. [Class 132 (iii)] [See also Group XXI] A toy shovelling or excavating machine, has the shovelling, raising and discharging operations effected in sequence by winding a single cable and the return to the initial position by reverse winding of the cable. A cab 1 is pivoted on a wheeled base 42 and carries a jib 6 held by ties 14 and strengthened by braces 7, 8. A channelled slide bearing 16 is pivoted on a spindle 17 and slidably supports the chan. nelled scoop arm 15 which is fixed to the scoop back 27, the front of the scoop being pivoted at 29 and normally held closed by a spring 32. Pulleys 18, 19, are mounted adjacent the bearing 16 and pulleys 11, 25, at the jib head and rear of the scoop arm respectively. A chain 13 passes from a hand driven spindle 36 by pulleys 18, 25, 19, 11 to the scoop ; when the chain is wound in, the scoop arm advances until a stop thereon contacts the rear of the bearing 16, the scoop then being raised until the rear of the scoop arm contacts the brace 7, and the scoop is then opened. On reverse winding of the chain, a spring 33 or weight returns the scoop arm until a stop 47 thereon engages the front of the slide 16. A brake disc 38 may be provided on the winding spindle and may be gripped by a loop 41 on a spindle 39 to hold the scoop in raised position.
Patent GB-795794-A (GB)
Title: Improvements relating to differential driving mechanisms
IPC: B62B5/00
Filed: 1955-02-01
Abstract: 795,794. Electrically-propelled vehicles. LAMBERTS OF KINGSTO.N, Ltd., and BOSTOCK, H. T. Dec. 29, 1953 [Feb. 1, 1955, March 10, 1955], Nos. 2980/55 and 7076/55. Classes 79(2) and 79(3) [Also in Group XXIX] A free-wheeling differential gear on a battery electric factory truck comprises two positive clutches each having a facially toothed output member 20 fast on an output half-shaft 6, and a freely slidable toothed input member 22 moved axially to engage the output member 20, and also driven, by a transverse pin 26 on an input shaft 2 engaging a double inclined cam surface 25 on the input member 22. A spring band 30 anchored at 31 to the fixed casing applies a light friction drag to the slidable input member 22 to pilot engagement and also to permit the driven shafts to rotate freely when the driving member is stationary. The drag brake may, as shown, act constantly, or may (Fig. 4, not shown) disengage from the casing and rotate with the input member in the fully engaged position. The cam 25 has axial end surfaces 36 to avoid end thrust when fully engaged and a spring 34 disengages the clutch. The clutch teeth 33 are inclined at 30 degrees to the axis to disengage on overrun. The input shaft 2 is driven through a wormgear 3 by an electric motor 1, de-energization of which causes both clutches to be spring disengaged, allowing the truck to be pushed freely. The motor 1 is mounted on the axle gear casing and supported by a spring link 16 anchored to one of two cross bars 11 connecting triangular end plates 10 carrying the wheels. The driven axle is centrally disposed and there are axially slidable wheels 58 at each end. Batteries 54, 55 and a controller 53 are provided. Specifications 703,942 and 705,795 [Group XXIV] are referred to.
Patent GB-195490-A (GB)
Title: Improvements in or relating to electrical regulating switches
IPC: H01H9/26
Filed: 1922-02-01
Abstract: 195,490. Curtis, F. C. Feb. 1, 1922. Regulating-switches; locking.-Two or more switches, each controlling a separate circuit, are so interlocked by direct obstruction, one by another, that the total current cannot exceed a given maximum, though it may have any value up to that maximum. The method is shown in Fig. 1 applied to two switches, wherein movable contacts 1. 2 bridge fixed contacts 3, 5<a>, 5<b> &c. respectively, the maximum current being obtained at contacts 5<g>, 6<g>. The handles 9, 10 carry cam surfaces 13. 14 adapted to limit the degree of nearness to which the contacts 1, 2 can approach, and with these conditions a constant number of fixed contacts lies between them according to the Provisional Specification.
Patent GB-547799-A (GB)
Title: Improvements in and relating to the surface treatment of composite metal bearings or bearing surfaces
IPC: C23F1/00
Filed: 1941-03-05
Abstract: 547,799. Cleaning bearings; electrolysis. VANDERVELL PRODUCTS, Ltd., TEMPLE, C. F., and GREEN, D. F. March 5, 1941, No. 3016. [Class 82 (ii)] [Also in Group XXXVI] The smeared layer produced by the final broaching or other tooling operation of a composite bearing or bearing surface having a matrix phase and an anti-friction phase is removed by chemical or electrolytic etching so that the anti-friction, phase is caused to stand above the matrix phase. The etching solution is chosen so as not to react with any backing metal upon which the bearing surface is carried, with or without the aid of an electric current. When the bearing &c. consists of lead bronze or lead copper bonded in a steel back, it is immersed in an etching solution of ammonium hydroxide and hydrogen peroxide, preferably 98 per cent of ammonium hydrate of 0.880 specific gravity and 2 of "100 volume" hydrogen peroxide.
Patent GB-142787-A (GB)
Title: An improved adjustable spanner or pipe wrench
IPC: B25B13/12
Filed: 1920-01-31
Abstract: 142,787. Schember & S÷hne, Bruckenwagen-und Maschinenfabriken Akt.- Ges., C., and Seibt, R. May 3, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Sliding-jaw wrenches; hand-grip wrenches.-A pipe or other wrench comprises an adjustable jaw movable along the shank of the other jaw, the section of the shank and of the opening in the movable jaw, through which it passes, being wedge-shaped in the upper and lower parts so that, after adjustment, they may be locked or jammed together. The shank S of the jaw B is of the sectional form shown in Fig. 4, having upper and lower wedge portions F', f<1>, and the opening o in the jaw b is of similar form in crosssection. This opening also tapers or contracts towards the centre so that the shank S may move freely through it in the position shown in Fig. 1, and may be locked by pressing the shank down to the shank s of the jaw b. This shank s may be of U-section, as shown.
Patent GB-799568-A (GB)
Title: Basic organic salts of cadmium
IPC: C07C51/41
Filed: 1956-01-31
Abstract: The invention comprises monobasic cadmium compounds having the general formula: <FORM:0799568/IV (b)/1> wherein n is 1 or 2 and R represents an aliphatic radical having 1 to 17 carbon atoms or an aromatic radical having 6 to 11 carbon atoms or may also represent the linking bond of oxalic acid when n is 2.  They may be prepared by reacting cadmium oxide in an aqueous medium with the appropriate acid in the proportion of 2 equivalent weights of oxide for every equivalent weight of acid and preferably in the presence of a small proportion of a water-soluble alcohol or glycol ether such as sec. butanol, isobutanol or ethylene glycol monobutyl ether. Alternatively, the basic salts may be prepared by reacting a soluble normal cadmium salt with the desired organic acid in an aqueous medium in the presence of an alkaline agent in the proportion of 2 equivalent weights of cadmium salt for every equivalent of acid. In typical examples: (1) cadmium oxide, caprylic acid, water and some isobutanol are mixed together in a rotary pebble mill for 24 hours at 35 \sB 5 DEG  C. to give mono basic cadmium caprylate; (2) an aqueous solution of undecylenic acid and caustic soda at 50 DEG  C. is added with stirring to an aqueous solution of cadmium sulphate at 30 DEG C. and monobasic cadmium undecylenate is precipitated.  In like manner, there are prepared the monobasic cadmium salts of capric acid, benzoic acid, salicylic acid, caproic acid, pelargonic acid, myristic acid and lauric acid.  Other acids mentioned are stearic, maleic, oxalic, adipic, succinic, sebacic, naphthoic, phthalic, chlorobenzoic, toluic and phenylacetic acids.  The monobasic cadmium salts are useful as stabilizers for vinyl halide resins (see Group IV (a)).  Specifications 760,636, [Group IV (a)], and 797,054 are referred to.ALSO:Vinyl halide resins are stabilized by means of mono-basic cadmium salts of the general formula CdO.Cd[R(COO)n]n2 wherein n is 1 or 2 and R represents an aliphatic radical containing 1 to 17 carbon atoms, an aromatic radical containing 6 to 11 carbon atoms or, when n=2, may also represent the linking bond of oxalic acid.  The mono-basic cadmium salts may be obtained from caproic, caprylic, capric, undecylic, undecylenic, lauric, myristic, stearic, pelargonic, maleic, oxalic, adipic, succinic, sebacic, benzoic, naphthoic, phthalic, chlorbenzoic, toluic, phenyl acetic and salicylic acids (see Group IV (b)).  Specifications 760,636 and 797,054 are referred to.
Patent GB-100857-A (GB)
Title: Improvements in Screws.
Inventor: LAW WILSON
IPC: F16B25/00
Filed: 1916-03-29
Abstract: 100,857. Law, W., and Manton, R. C. March 29, 1916. Drive-screws. - Screws for use in woodwork are tapered from end to end and are of circular cross-section at the roots of the threads, which are interrupted circumferentially. Fig. 2 shows a screw of oval section over the thread, and circular section at the root, as shown in Fig. 3.
Patent GB-393025-A (GB)
Title: Improvements in or relating to fishing reels
IPC: A01K89/033
Filed: 1932-02-03
Abstract: 393,025. Fishing. ENGLISH NEEDLE & FISHING TACKLE CO., Ltd. and FAWCETT, J. R., Central Works, Studley, Warwickshire. Feb. 3, 1932, No. 3182. [Class 48.] A fishing-reel brake comprises a screwed sleeve 17 which retains the drum 13 on a spindle 9 and a nut 20, 21 by adjustment of which the pressure of a spring- pressed washer 16 against the drum can be varied. A spring check pawl in accorda n c e wit h Specification 353,370 is provided.
Patent GB-420948-A (GB)
Title: Improvements in and connected with road and like blocks for use as signs and warnings
IPC: E01F9/06
Filed: 1934-01-31
Abstract: 420,948. Block for road signs. STEPHENSON, J. F., 96, High Street, Knaresborough, Yorkshire. Jan. 31, 1934, No. 3243. [Class 87 (i)] Symbolic members 2 forming part of road warning signs are secured in a moulded block 1 of hard wearing material by means of reinforcing members 3 embedded both in the block and in the symbolic members and extending laterally beyond the edges of the block to key with the road surface. Preferably, the blocks are formed of concrete in a mould having raised letters on the bottom to produce corresponding cavities in the block, the reinforcing wires or mesh extending across these cavities. The cavities in the block are filled with concrete containing marble or granite chippings or colouring matter to contrast with the block. Alternatively, the symbolic members 2 may be preformed with the reinforcement 3 embedded in them, and laid on the bottom of the mould before pouring in the material for the block 1. Where several blocks abut, the abutting edges may have interlocking means or grouting grooves, the reinforcement extending beyond the other two edges only.
Patent GB-141454-A (GB)
Title: Attachment for a wire spring mattress
IPC: A47C23/32
Filed: 1919-08-09
Abstract: 141,454. Glaholm, J. Aug. 9, 1919. Mattresses.-An anti-sagging device for use with a spring mattress, of the type comprising a woven wire band 4 with attached helical springs 3 and clips, has the clips 1 adapted to slip over the head and foot rails of the mattress from the outside thereof.
Patent GB-962689-A (GB)
Title: Polymerisation of organic isocyanates
Inventor: FARTHING ALAN CHARLES
IPC: C07D229/00
Filed: 1962-01-30
Abstract: The process of the parent Specification is modified by the presence, in addition to the aryl isocyanate, of another organic isocyanate, the aryl isocyanate being converted at least in part to the uretedione or dimeric form at below 100 DEG C. and the uretedione then being separated from the mixture.  Where the other isocyanate is less reactive than the aryl isocyanate the conditions can be controlled to dimerize only the aryl isocyanate and not the other isocyanate. Suitable aryl isocyanates are phenyl, p-chlorophenyl and p-nitrophenyl isocyanates and tolylene-2, 4-, chlorophenylene-2, 4-, 2-chlorophenylene-1, 4- and methoxyphenylene-2, 4- diisocyantes. Suitable other isocyanates are aliphatic isocyanates not known to form a dimer, and aryl isocyanates or polyisocyanates with a substituent ortho to each -NCO group, such as butyl, o-chlorophenyl, o-tolyl, and o-methoxyphenyl isocyanates and hexamethylenetolylene-2, 6-, 1-ethylphenylene-2, 6-, methoxy, phenylene-2, 6- and chlorophenylene-2, 6-diisocyanates. The polymerization may be stopped when desired by adding an acyl halide or Friedel-Crafts catalyst. The process may be used to separate mixtures of isocyanates. such as tolylene-2, 4- and 2, 6-diisocyanates and o- and p-chlorophenyl isocyanates.ALSO:An aryl isocyanate is removed from solution in or admixture with high molecular weight polyisocyanates such as isocyanurate polymers or urethane polyisocyanates by polymerising the monomer to the uretedione (dimeric) form (see below) and removing the latter by filtration. The dimerisation is effected at below 100 DEG C. by the process of the parent Specification (former Abridgment Group IV (b)) by contacting the mixture with a 3- and/or 4-substituted pyridine of such basicity that when substituted in benzoic acid in the m- or p-position respectively, said 3- and/or 4-substituent increases the pKa value of the substituted benzoic acid, measured in water at 25 DEG C., to greater than 4.35. Specified substituents are alkoxy, aryloxy, dialkylamino, alkaryl, morpholino and piperidino.