baber/WOPTO huggingface dataset:
Patent GB-962242-A (GB)
Title: Hardening agents for epoxide resins prepared by reacting polyamines with amino-esters
Inventor: HUMPHREYS KEITH WOOD
IPC: C08G59/54
Filed: 1961-07-10
Abstract: The invention comprises the reaction products of polyamines or partially acylated polyamines with esters of the formula: <FORM:0962242/C1/1> and especially those products of formulae: <FORM:0962242/C1/2> and <FORM:0962242/C1/3> where in these formulae R1, R2 and R3 are hydrogen or alkyl, R4 is alkyl, R5 is an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon group, X is polyalkylene or a group: <FORM:0962242/C1/4> (where n is 0, 1 or 2), Y is polyalkylene or a group: <FORM:0962242/C1/5> (where m is 0, 1 or 2) and Z is a saturated or unsaturated acyclic aliphatic hydrocarbon group of 1-17 carbon atoms; and the production of such compounds by reacting the ester of the first formula above with the polyamine or partially acylated polyamine, e.g. with X(NH2)2, or with Y(NH2)2 followed by reaction with ZCOOH or an ester thereof, or with NH2YNHCOZ.  The products are hardening agents for epoxide resins (see Division C3).  Specification 960,622 is referred to.ALSO:Hardening agents for epoxide resins comprise the reaction products (amides) of polyamines or partially acylated polyamines with esters of formula: <FORM:0962242/C3/1> where R1, R2 and R3 are hydrogen or alkyl, R4 is alkyl, and R5 is an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon group. Preferred products are the diamides obtained from the above ester and X(NH2)2 where X is polyalkylene or: <FORM:0962242/C3/2> (where n is 0, 1 or 2), and the monoamide derived from the above ester and the amine: NH2YNHCOZ, where Y is polyalkylene or: <FORM:0962242/C3/3> (where m is 0, 1 or 2) and Z is a saturated or unsaturated acyclic aliphatic hydrocarbon group of 1-17 carbon atoms.  The invention also comprises hardenable compositions comprising a hardening agent as above and an epoxide containing on average more than one epoxide group per molecule, and hardened compositions obtained by curing such compositions.  Suitable epoxide resins are polyglycidyl esters and ethers, e.g. diglycidyl adipate and phthalate, ethylene glycol and resorcinol diglycidyl ethers, and resins of formulae <FORM:0962242/C3/4> Other acids and alcohols from which glycidyl esters and ethers may be obtained are listed. Specification 960,622 is referred to.
Patent GB-361004-A (GB)
Title: Improvements in the manufacture and production of hydrocyanic acid and its salts
IPC: C01C3/02
Filed: 1930-08-21
Abstract: Hydrocyanic acid and its salts are obtained by passing a gaseous mixture containing ammonia, oxygen and at least one hydrocarbon over an oxidation catalyst at from 500-1300 DEG  C., preferably from 700-1200 DEG  C.  Aliphatic, cycloaliphatic and aromatic hydrocarbons are suitable, but preferably one or more lower members of the aliphatic series, such as methane, ethane, ethylene, &c., are used. The proportion of oxygen used varies from 0,2 molecular proportion for a mixture of 1 molecular proportion each of hydrocarbon and ammonia to 1 molecular proportion of oxygen for each carbon atom of the hydrocarbon plus 0,25 molecular proportion of oxygen for any atomic proportion of hydrogen present in the hydrocarbon and ammonia. Excess of either hydrocarbon or ammonia serves as a diluent, or other inert gases may be added for that purpose.  The effluent gases may be used again after replacing the substances consumed, or they may be used for heating purposes.  The reaction is exothermic, and may be carried out at atmospheric, increased or reduced pressure. Suitable catalysts include the noble metals, such as platinum, iridium, rhodium, palladium, osmium, gold or silver, as such or alloyed with each other or with other metals and the rare earths, cerium, lanthanum, thorium, aluminium, iron, tin, zinc, cadmium, bismuth or uranium in the form of difficultly fusible compounds, such as oxides, phosphates, or mixed phosphates.  The noble metal catalysts are usually employed in the form of nets or like structures, while the above base metal compounds are preferably deposited on a heat-resisting carrier, such as silica or alumina gel.  The products may be cooled to obtain hydrocyanic acid, or allowed to act at temperatures from 500-900 DEG  C., after removal of water vapour if required, on alkali or alkaline-earth metal oxides or hydroxides or salts which are readily convertible thereto to obtain cyanides and cyanamides, and preferably gas mixtures richer in oxygen are used for this purpose to increase the yield. Details of various gas mixtures and different catalysts which may be used are given in examples.
Patent GB-338201-A (GB)
Title: Improvements in or relating to the manufacture of cellulose esters
IPC: C08B3/16
Filed: 1929-08-16
Abstract: 338,201. Kodak, Ltd., (Assignees of Staud, C. J. and Webber, C. S.). Feb. 18, 1928, [Convention date]. Cellulose carboxylates.-Mixed cellulose esters, other than cellulose lacto-formate, are prepared by digesting an acyl ester of cellulose, such as cellulose acetate, with an aliphatic or aromaticaliphatic mono- or di-basic carboxylic acid containing a hydroxyl group in the alpha position. Suitable hydroxy acids mentioned are lactic, tartaric, racemic, glycollic, glyceric, mandelic, and malic acids. The reaction is preferably carried out by digesting a solution of the acyl ester of cellulose in the desired hydroxy acid in a flask fitted with a reflux condenser, at a temperature of about 100‹ C. and at atmospheric pressure. The use of higher pressures is referred to. It is essential that the acyl cellulose ester be soluble in the acid employed, and for this purpose it may be necessary to add a small quantity of water; thus for example, cellulose acetate is soluble in a 75-85 per cent aqueous solution of lactic acid, and in a 77 per cent aqueous solution of tartaric acid. The composition of the mixed ester obtained depends on the extent of the digestion and the amount of water present, the longer the digestion the more does the solubility of the product pass over from solubility in acetone, to solubility in alcohol-water mixtures and finally to solubility in water. The initial acyl ester may or may not be partially hydrolyzed to the acetone soluble stage. In examples, (1) cellulose acetate, hydrolyzed or not, is dissolved in 75-85 per cent lactic acid and heated at 100‹ C. The product is precipitated with acetone, and is soluble in water. (2) Cellulose acetate containing 33 per cent acetyl is dissolved in glycollic acid and heated to 100‹ C. )3) Cellulose acetate containing 33 per cent acetvl is dissolved in tartaric acid containing water and is heated to 100‹ C. (4) Cellulose acetate containing 34.1 per cent acetyl is mixed with glyceric acid and heated to 100‹ C. (5) Cellulose acetate containing 34.1 per cent acetyl is digested with mandelic acid at 120-130‹ C. The product is soluble in an ethylene chloride, methanol mixture. (6) Partially hydrolyzed cellulose acetate is dissolved in a mixture of racemic acid and water, and heated by steam. (7) Cellulose acetomalate is prepared by dissolving cellulose acetate in a saturated aqueous solution of d-l malic acid, or in pure l-malic acid, and heating to 100‹ C. A progressive change is observed from solubility in acetone, in 75 per cent aqueous ethanol, in 50 per cent aqueous ethanol, and finally to solubility in water. Specification 8313/11 is referred to.
Patent GB-1348045-A (GB)
Title: Polythioethers formed by anionic ring opening of episulphides
IPC: C08G75/08
Filed: 1971-04-19
Abstract: 1348045 Thioether thiols ESSO RESEARCH & ENG CO 19 April 1971 [26 March 1970] 25360/71 Heading C2C [Also in Division C3] Thiol terminated thioethers, including novel polythioether thiols of the formula wherein R denotes a C 1-200,000  organic radical, m is the valency of R, R<SP>1</SP> denotes a C 1-250,000  hydrocarbyl or substituted hydrocarbyl radical in which the substituents are hydroxy, hydrocarbyloxy, hydrocarbylthio, acyl, thioketonic, alkylene sulphide, alkylene oxide, polyester or hydrocarbylene polyether groups, R<SP>11</SP>, R<SP>111</SP> and R<SP>1111</SP> independently denote H, C 1-30  hydrocarbyl or C 1-30  substituted hydrocarbyl in which the substituents are as listed above, provided that when R<SP>11</SP> is H, R<SP>111</SP> is also H, and when R<SP>11</SP> and R<SP>111</SP> are H, R<SP>1</SP> is not the same as R<SP>1111</SP>, X denotes an organophosphine, p is 1 to 20,000, m is an integer, n is an integer of 1 to 50,000, r is an integer of 1 to 10 and t is 0 to 10, are prepared by reacting at least one episulphide with hydro-. gen sulphide or an organic thiol or a mixture thereof in the presence of an organic phosphine catalyst. Analogous novel compounds in which X denotes an organoamine and t is also 0 to 10 may be prepared using an organoamine catalyst in place of the organophosphine catalyst. The novel polythioether thiols are prepared by a series of sequential reactions using episulphides of differing reactivity. The catalyst may be removed from the catalyst complexes by a mild acidification treatment and aqueous extraction, or by a heat stripping treatment. In examples (1) methanethiol and propylene sulphide are condensed in presence of trimethylphosphine to produce 1-methylthio-2-propanethiol. Uses.-The monothioether thiols may be used as pesticides.
Patent GB-1023442-A (GB)
Title: Improvements in or relating to straight bar knitting machines
Inventor: TAYLOR GEORGE
IPC: D04B11/14
Filed: 1962-07-03
Abstract: The machine needles 2 of a straight-bar rib machine Figs. 4, 5, 7, 9 and 10 (not shown) have their rear end portions 2a at right angles to their shanks and extending upwardly so as to be secured to a bar attached to an operating lever controlling their movement.  During the knitting of rib fabric the machine needles are fully advanced, Fig. 4, after the frame needles have received a yarn sunk by the sinkers such that the upstanding rear end 2a of the machine needles engages the yarn adjacent alternate frame needles and prevents it entering the hook of those needles.  The old loops on the machine needles 2 have meanwhile passed over a protuberance 2b on their shanks so as to hold the old loops as the machine neeldes are withdrawn taking into their hooks the loop of yarn K dispossessed from the alternate frame needles Fig. 5.  The machine needles are then pressed and knit the rib loops simultaneously as the frame needles knit the plain loops.  When it is desired to knit plain fabric the machine needles are fully advanced above the machine needles to extend their loops, Fig. 7, and to enable the alternate frame needles to engage in a groove 2c in the end portion 2a as the frame needles rise to take the loops from the machine needles. Alternatively instead of the bearded machine needles, or for that matter frame needles, loop forming element 5, Figs. 9, 10, may be used and comprises a composite member having a fixed portion 6 with an inclined slot 6a and a slide 8 having a vertical slot 8a.  When drawing a loop the yarn engages the slot 6a and slides down the incline drawing the slide 8 forward as it does so by its engagement with slot 8a.  The old loop can then pass over the new loop. Transfer to the frame needles is performed in a similar manner to the bearded needle arrangement.  In the case of loop forming elements a pressing motion is not required and cam and lever mechanism for performing this motion in connection with bearded needles can in the case of the loop forming elements be dispensed with.  The machine needles can also serve to perform the welt forming and turning operations by slogging the cam shaft such that the controlling cams for the operating lever are suitably disposed to effect the required motions.
Patent GB-227200-A (GB)
Title: Improvements in or relating to heeling of boots or shoes
IPC: A43D79/00
Filed: 1923-10-12
Abstract: 227,200. British United Shoe Machinery Co., Ltd., Minett, W. T., and Jones, R. M. Oct. 12, 1923. Heels, machines for.-Relates to heel attaching machines of the kind described in Specifications 100,111 and 186,126 provided with a work support, a heel tread abutment and an abutment to engage the rear contour of the heel; and consists in a rear abutment which is moved into engagement in consequence of the approach of the work support and the tread abutment, but in a path transverse to that movement of approach. and which, when in position, resists rearward movement of the heel by direct bracing against the machine column or the like. As shown, the rear abutment 35 is pivoted to a bracket 19 adjustable along a link 21 pivoted to the machine column. The bracket is supported by a link 15 screw threaded into a block carried by lugs 13 in the usual vertically moving member carrying the heel tread abutment 11. Slots 25 with enlarged circular ends normally engaging slidable sleeves carried by the block facilitate rapid removal of the rear abutment when this is not required. The tread abutment 11 is mounted on straight and curved adjusting slides controlled by thumb nuts 16, 17. Tn a modification, the rear abutment is rigidly mounted at the end of an arm pivoted to the column, is depressed against the action of a spring by a stop plate moving with the tread abutment. The invention may be applied to the machine described in Specification 23031/11. Specification 108,178 also is referred to.
Patent GB-820480-A (GB)
Title: Self compensating gyro apparatus
Inventor: FREEBAIRN DARWIN L
IPC: G01C21/18
Filed: 1956-08-20
Abstract: 820,480. Gyroscopic apparatus. NORTH AMERICAN AVIATION Inc. Aug. 20, 1956, No. 25445/56. Class 97(3) [Also in Groups XXXIV and XXXV] Gyroscopic apparatus in which inherent error torques about the precessional axis are cancelled out by periodically reversing the gyro spin direction comprises, Fig. 1, a platform 1 stabilized about a vertical axle 2 by a pair of gyros 5, 6, having precessional axes 8, 7. The gyro rotors are driven by 3-phase windings connected to a supply # 1 -# 3  through a drum switch 15 (shown in developed form) rotated at 3 r.p.m. by a motor 18 so that contacts 62, 63, 64 &c., move from right to left, whereby the two gyro rotors are respectively reversed at each 180 degrees drum rotation at drum positions displaced by 90 degrees. The drum switch also controls the output from amplifiers 72, 77 derived from "E" pickoffs 13, 14 associated with the axes 8, 7, such that the output from either pickoff is directed either to the associated gyro torque motor 9 or 10 or to a torque motor 4 connected to axle 2. Thus platform 1 is stabilized by the gyros 5, 6, alternately, since when the pickoff signal of one gyro is connected to the motor 4, the signal of the other is connected to its torque motor so that the other gyro is caged, the rotor reversal taking place just after commencement of the caging phase. Each gyroscope comprises, Fig. 2, a rotor 20 supported by bearings 21, 22, in a sphere 23 supported by a fluid supplied to bearings 26, 27 through conduits 30, 31. The stator windings 41 are supplied through flexible leadins 38, 39 and the pickoff signal is derived from "E" pickoff 37 having a rotor 36 secured to a shaft 32 connected to the bearing 27. The pickoff signal is supplied either to 2-phase windings 34, 35 of an induction motor having a rotor 33 to cage the gyro, or to induction motor windings. 51 controlling a rotor 44 held in its normal position by a torsion rod 43, rotation of the rotor in either direction causing movement of a valve 46 whereby air is exhausted through jet 48 and 49 to maintain the correct orientation of the platform 1. A platform rotatable about three mutually orthogonally disposed axes and stabilized by three pairs of gyroscopes is described with reference to Figs. 6-10 (not shown).
Patent GB-156920-A (GB)
Title: Improvements in pneumatic load-engaging means
IPC: B66C1/02
Filed: 1919-10-17
Abstract: 156,920. Pilkington Bros., Ltd., and Waldron, F. B. Oct. 17, 1919. Suction holding- appliances.-Pneumatic load - engaging means, of the kind in which a sucker plate has its operative face divided into rings, is constructed with the outer edges of some or all of the rings inclined inwardly and upwardly away from the load. In the construction shown in Fig. 1, a rubber ring 2 vulcanized to a support provided with a hole 3 leading to an exhausting- apparatus, is provided with three moulded internal rings 8, 9, 10. Each cf the inner rings is inclined as stated above, so that air pressure in any channel, due to leakage, has a vertical component which assists in pressing the succeeding ring to the load and thus prevents the leakage penetrating the entire system. The outer ring 7 may be inclined or formed with a vertical wall as shown, to minimize damage. Modifications are described in which the number and arrangement of rings is varied to give different widths of the marginal rings 7, 10 to suit particular circumstances. Fig. 5 shows a built-up sucker plate comprising conical rings of leather 16 separated by annular distance-pieces and clamped to themain support 1 by the curved cross-plate 17.
Patent GB-443188-A (GB)
Title: Improvements relating to the manufacture of elastic threads
IPC: D02G3/32
Filed: 1935-09-14
Abstract: 443,188. Elastic threads. PICKLES, R., Ashmeade, Padiham Road, Burnley, and PICKLES, J., Fence House, Fence, near Burnley. Sept. 14, 1935, No. 25551. [Classes 120 (ii) and 120 (iii)] An elastic thread, formed of one or more tensioned rubber filaments combined with one or more non- extensible threads, is made by ballooning the thread as it is combined with the filament so that the parallel formation is slightly disarranged and a slight binding effect produced, the combined filament and thread being subsequently twisted once then twisted in pairs in the opposite direction. As shown, the rubber filament A is drawn from a bobbin B resting on a pair of rollers C driven through a variable speed gear and passes with the threads F, G, drawn from cones D, E, over a tension roller H and through a traversing guide J to the bobbin K on which they are wound; the bobbin K is driven through change speed gearing and the speeds of the bobbin B, K can be varied to adjust the stretch imparted to the filament and control the amount wound on the bobbin K. The combined thread on the bobbin K is then twisted in a suitable doubling frame, preferably of the wet type, and finally twisted in pairs in the opposite direction on a second doubling frame.
Patent GB-1476824-A (GB)
Title: Culinary implement for cutting and serving pastry products
IPC: A47G21/04
Filed: 1975-06-16
Abstract: 1476824 Pie cutting and serving utensil DART INDUSTRIES Inc 16 June 1975 [5 Aug 1974] 25628/75 Headings A4A and A4C A utensil for cutting and serving pastry products from round pie dishes comprises a blade 12 having bevelled knife edges 28 and a recess 34 on the upper surface extending adjacent the knife edges and a handle 14 extending rearwardly of the blade and joined thereto by an upwardly angled integral connector 16, the edges of the connector and a portion of the handle being bevelled 46, 42, whereby in use, the bevelled portions of the blade, connector and handle ensure complete separation of the pie from the bottom, side wall and lip portions respectively of a pie dish and the recess 34 prevents adhesion of the pie to the upper surface of the blade. The knife edge 28 of the blade is preferably serrated and the handle and connector concave to form a channel for liquids. The utensil is preferably moulded from plastics material.
Patent GB-154765-A (GB)
Title: A collar stud
IPC: A44B3/02
Filed: 1919-10-20
Abstract: 154,765. Bloom, L. Oct. 20, 1919. Studs.-A metal, bone, or other collar stud A has a cap B of rubber on the base to avoid chafing the neck. Reference has been directea by the Comptroller to Specifications 1504/75 and 25692/02.
Patent GB-173572-A (GB)
Title: Improvements in or relating to the treatment of canvas and similar woven fabrics
IPC: D06B3/10
Filed: 1920-09-06
Abstract: 173,572. D.R. Cotton Mills, Ltd., No. 2, and Andrew, T. Sept. 6, 1920. Registering webs.-In a machine for breaking or destroying the selvedges of canvas and similar fabrics wherein a series of discs A having sawlike teeth and driven by a.n electric motor C engage the edge of the fabric, the discs are maintained automatically in the correct position with respect to the edge of the fabric by means of a spring-actuated feeler device L adapted to bear against the edge of the fabric. The feeler controls a contact-maker N to cause it to make contact with one or other of two contact-pieces o, o<1> separated by an insulator o<2>. The contactpieces o, o<1> are connected to relay devices controlling the direction of rotation of an electric motor, which is normally at rest but is adapted to operate a screw device for moving the motor C and the discs A towards or from the edge of the fabric.
Patent GB-665573-A (GB)
Title: Improvements in the remote control and protection of electric motors, cables and other apparatus
IPC: H02H7/00
Filed: 1949-10-26
Abstract: 665,573. Protective cut-out arrangements. BROOKE, W., and BALDWIN, H. T. Oct. 26, 1949. No. 25672/49. Drawings to Specification. Class 38 (v). A remote control protective system for electric motors or other apparatus has two gasfilled thermionic valves connected in push-pull and provided with negative primary grid bias voltages of unequal value and resistors equal in value to each other in the grid circuits arranged so that secondary grid voltages may be impressed across the resistors into the grid circuits in opposition to the primary grid bias voltages. By controlling the magnitude of the secondary voltages both valves may fire to provide full wave excitation to the closing coil of a contactor to close the contactor and then on a reduction in the secondary voltages one valve ceases to fire, so that the other valve provides a half wave excitation sufficient to maintain the contactor closed, but insufficient to reclose the contactor should it have been opened by a fault condition. The Figure and description are the same as Figs. 4 and 5 and the subject matter relating thereto of Specification 665,571, but the claims differ. Specifications 605,927, 605,932, 623,911, 636,720 and 665,576 also are referred to.
Patent GB-199646-A (GB)
Title: Improved pump for supplying lubricating oil
IPC: F16N13/10
Filed: 1922-09-22
Abstract: 199,646. Salisbury, A. Sept. 22, 1922. Regulating delivery by closing suction valves; valves, arrangement of. -A lubricating pump comprises a cylinder 10 with inlet and delivery ports 17, 18 controlled by a slide valve 22 which is adapted to be alternately engaged and released by a resilient arm 27 on the plunger 12 adapted to engage a notch 29 in the valve head and lift the valve during the suction stroke against the action of a spring 31. At a variable point in the stroke the arm is disengaged from the valve by an abutment 33 on the pump barrel engaging a bent portion of the arm, and the valve then closes the suction port. The moment of closing may be varied by adjusting the position of the abutment on the barrel.
Patent GB-443907-A (GB)
Title: Improvements in or relating to magnetos for multi-cylinder internal combustion engines
IPC: H02K21/14
Filed: 1934-09-07
Abstract: 443,907. Magnetos. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and GOUGH, W. E., 20, Biggin Hall Crescent, and MAYCOCK, W. H., 33, Camden Street, Stoke, both in Coventry. Sept. 7, 1934, No. 25777. [Class 35] A magneto has two independent sets of stator windings spaced one-eighty degrees apart, each with its own circuit-breaker, and when the pairs of rotary magnet polepieces co-operate simultaneously with the polepieces of both stator windings, one of the circuit breakers is actuated. In the form shown, the magnet D has eight polepieces and the circuit breakers A, A1 are actuated alternately so that four sparks are produced by each secondary winding H, HI per revolution. The circuit-breakers may be actuated by a common cam and the magnet may be rotated at one and a half times the engine speed.