baber/WOPTO huggingface dataset:
Patent GB-477881-A (GB)
Title: Improvements in or relating to two-stroke internal combustion engines
IPC: F01L1/00
Filed: 1937-07-20
Abstract: 477,881. Two-stroke engines. INTERNA HOLDING SOC. ANON. July 20, 1937, No. 20100. Convention date, July 24, 1936. [Classes 7 (ii) and 7 (vi)] Valve gear.-A piston valve 6 controlling exhaust ports 7a, 7b in a two-stroke engine is opened by the pressure of the exhaust gases and closed by air compressed by the opening movement of the valve. The valve works over a stationary head 13 and is formed with an enlargement 9 working in a chamber 11 in the cylinder head. The valve has upward extensions 15a, 15b connected to a shaft 22, which 'is formed with a crank 23 engaging a block 24 movable horizontally by a tappet 32 and cam 29. During the compression and firing periods, the crank 23 is on its lower deadcentre, and the valve is thereby locked. When exhaust is to occur, a projection 30 of the cam 29 moves the crank from its dead-centre position and also moves the valve sufficiently to overcome frictional resistance. The pressure of the cylinder gases then raises the valve 6 to open the exhaust ports. The air contained in chamber 14 above the valve is thus compressed until the valve arrives at its upper dead-centre, air being also drawn. past a valve 33 into the space 34. Another projection 31 on the cam 29 then moves the crank from its upper dead-centre, and the compressed air in the chamber 14 returns the valve 6 to the closed. position, the air in the space 34 braking this return movement. The position of the cam projections 30, 31 may be adjustable. Pumps.-The air thus compressed in the space 34 is admitted to the cylinder for supercharging, by means of a passage 39 and valve 41 opened by contact of an extension 43 of the bushing of the shaft 22 with the valve stem 42. A valve 35 is similarly actuated to open the chamber 14 to atmosphere.
Patent GB-901530-A (GB)
Title: Commutators for dynamo electric machines or other purposes
Inventor: BUTCHER FRED ERIC
IPC: H01R43/08
Filed: 1957-06-26
Abstract: 901,530. Commutators for dynamo-electric machines. LUCAS (INDUSTRIES) Ltd., JOSEPH. Sept. 16, 1958 [June 26, 1957], No. 20108/57. Class 35. In a moulded commutator of the type made by bending a transversely grooved strip into a cylinder and subsequently turning off the bridges between the segments, the inner surfaces of the segments are provided with at least two pairs of double claws e to provide effective bonding with the moulded material f.
Patent GB-225903-A (GB)
Title: Improvements in or relating to aircraft and the like
IPC: B64C13/00
Filed: 1923-08-08
Abstract: 225,903. Turner, C. Aug. 8, 1923. Balancing.-A divided control column for aeroplanes, &c. comprises two levers A, B capable of relative movement in an athwartship direction and so connected, as by a rack C and catch, that they can be moved as one either in a fore-and-aft or athwartship direction. As shown, the levers are connected to the ailerons D, E by cables D<1>, E<1>, and a compensating device is provided for taking up slack in the balance wire F, in different relative positions of the levers A, B, comprising a wire J attached to the two levers and passing over a pulley I which is attached to a pulley G over which passes a loop F<1> of the balance wire. When the compensated balance wire system is not employed the divided control column may be connected to the ailerons so as to obtain positive action thereof in both directions, or return springs may be used. The mechanism may be used to control accessories for flying, aerial combat, &c.
Patent GB-614199-A (GB)
Title: Improvements in clips for fixing electric conductors
IPC: F16L3/123
Filed: 1946-07-05
Abstract: 614,199. Clip brackets. PREECE, J. July 5, 1946, No. 20202. [Class 52 (v)] [Also in Groups XXV and XXXVI] A clip comprises two strip elements 5, 6 joined by an easily bendable neck 7, teeth 9 serving to fix the clip to a wall and teeth 14 being passable through incisions 12 in the strip 5 into the wall to hold the clip closed round a cable. A hole 10 may be provided for a screw or nail, and the teeth may be punched out of the body of the elements, 5, 6 instead of being formed on flanges thereof.
Patent GB-681581-A (GB)
Title: Improvements in or relating to resinous compositions
IPC: C08K5/42
Filed: 1950-08-18
Abstract: Polyvinyl chloride and copolymers containing at least 70 per cent of vinyl chloride are plasticized by sulpho-esters having the formula <FORM:0681581/IV (a)/1> where X is a hydrogen or chlorine atom or a methyl group and n is from 8 to 12.  The plasticizer generally comprises 5 to 50 per cent of the total composition which may be obtained by mixing on a mill.  The copolymers may be derived from up to 30 per cent of compounds such as vinyl acetate and alkyl maleates and fumarates. An example specifies a phenyl ester of 1-dodecane sulphonic acid.ALSO:Esters having the formula <FORM:0681581/IV (b)/1> where X is a hydrogen or chlorine atom or a methyl group and n is from 8 to 12, are prepared from 1-olefins as derived from the Fischer-tropsch reaction or from the primary n-mercaptans.  The 1-olefins may be reacted with hydrogen sulphide or b -mercaptoethanol.  The mercaptan, its thial or the alkyl mercaptoethanols are then oxidized, e.g. with nitric acid, to the sulphonic acids.  These are converted to the sulphonyl halides which can be reacted with phenol, a cresol, or a chloro-phenol to give the esters, which are used as vinyl chloride resin plasticizers.
Patent GB-1344918-A (GB)
Title: Acrylate-capped polycaprolactone
IPC: C07C69/54
Filed: 1971-04-19
Abstract: 1344918 Acrylate-capped polycaprolactones UNION CARBIDE CORP 19 April 1971 [29 Jan 1970 2 Sept 1970] 20557/71 Heading C2C [Also in Division C3] The invention comprises acrylate-capped polycaprolactones of the formulµ wherein Z is H or CH 3 , Q is the residue remaining after reaction of a caprolactone polyol and is one of the formulµ wherein R<SP>1</SP> is H or an alkyl, alkoxy, aryl, cycloalkyl, alkaryl or aralkyl group having up to 12 C atoms and at least six of the R<SP>1</SP> groups are H, and R<SP>11</SP> is the residue of an organic polyol, G is the monovalent organic residue remaining after reaction of a substituted or unsubstituted monocarboxylic acid or monoisocyanate and is alkyl, aryl, alkenyl, aralkyl, alkaryl or cycloalkyl having up to 12 C atoms; G<SP>1</SP> is the poly. valent organic residue remaining after reaction of a substituted or unsubstituted polycarboxylic acid or polyisocyanate and is a direct link, linear or branched C 1  to C 10  alkylene, C 6  to C 12  arylene, alkarylene or aralkylene, C 5  to C 10  cycloalkylene and C 7  to C 15  bicycloalkylene; R is a linear or branched C 2  to C 5  divalent alkylene; x is an integer from 1 to 4; y is an integer from 1 to 3, y<SP>1</SP> is an integer from 1 to 3; the sum of y and y<SP>1</SP> is from 2 to 4; and w is an integer equal to the valency of G<SP>1</SP> and is from 2 to 4. These products may be obtained as follows: (a) Products of Formulµ IA and IB may be obtained by reacting a compound of formula having at least one free OH group with a monocarboxylic acid or its anhydride, or a dicarboxylic acid or its anhydride respectively; (b) products of Formulµ IC and ID may be obtained by reacting a compound of Formula A above having at least one free OH group with an organic mono- or polyisocyanate respectively under anhydrous conditions in the presence of a catalyst for the formation of a urethane group; and (c) products of Formula II may be obtained by heating a mixture of polycaprolactone polyol, hydroxyalkyl acrylate and organic isocyanate. Examples are given for the preparation of these products. They are useful as coating compositions. The acrylate-capped polycaprolactone polyols of Formula A above may be obtained by heating a mixture of polycaprolactone polyol with acrylic or methacrylic acid.
Patent GB-494609-A (GB)
Title: Improvements relating to wringing and mangling machines
IPC: D06F45/16
Filed: 1937-07-26
Abstract: 494,609. Mangles and wringers. TAYLOR & WILSON, Ltd., KENNEDY, A., and HINDLE, C. July 26, 1937, Nos. 20579 and 34335. [Class 138 (ii)] In a folding wringer the turnover frame A and the stationary part, which may be a washing-machine D, are formed with interengaging surfaces a, a which become interlocked by imparting a slight lateral movement to the wringer when in its operative position. The wringer may be mounted on a rod B carried in bearings C secured to the washing-machine and the rod is formed with a turned over end b<3> in which a pin b<4> carried by the limbs of a bifurcated cam lever b<5> is received. On rotating the lever so that the cam face contacts with the side of the turnover frame the latter is moved to the left to effect the interengagement of the parts a, c. When the cam lever is moved to the position shown, a spring moves the turnover frame slightly to the right and allows it to be lowered. A table cover may be removably placed over the washing-machine to serve as a board for receiving the goods as they come from the wringer, and when the latter is moved to its inoperative position the table cover may be raised somewhat and placed over both the washing-machine and the lowered mangle and may be locked thereto by causing a stud, projecting downwardly from its under surface, to engage between the interengaging surfaces a, c. In the form shown in Fig. 6 the cam lever is replaced by a screw h<4> having a portion h<6> of the head h<5> engageable in a countersink a4 in the turnover frame. On screwing up, the interengaging surfaces a<2>, b<1> are moved into interlocking engagement. The wringer may be entirely removed by removing a screw a<6> at the other end of the turnover frame. On releasing the screw h4 the wringer frame is automatically moved slightly to the right so that it may be folded down. The table and stationary support may be provided with three sets of hinge members, two of which are used for supporting the table as a work receiving board and two being used when the table is being used as a cover.
Patent GB-834983-A (GB)
Title: Hair curling device
IPC: A45D2/24
Filed: 1958-06-27
Abstract: 834,983. Hair curlers. GILLETTE CO. June 27, 1958 [July 11, 1957], No. 20661/58. Class 131 A hair curler comprises an elongated winding member having spaced ribs 16 and a sponge member 26 engaged between the ribs. The sponge, which is preferably made of polyurethane and may have slots 28 in which the ribs seat, project beyond the ribs to provide a yielding support for the wound hair which is retained by a pivoted clamp 10 locking the winding member against rotation. The sponge may be saturated with waving or neutralizing solution.
Patent GB-1194670-A (GB)
Title: Vacuum Lifting Gear for Flat Articles
IPC: B66C1/02
Filed: 1969-04-23
Abstract: 1,194,670. Suction lifting devices. VACULIFT MASCHINENBAU G.m.b.H. 23 April, 1969 [26 April, 1968], No. 20687/69. Addition to 1,129,348. Heading B8H. The vacuum lifting device of Specification 1,129,348 is modified by the provision of a pressure reduction chamber 46, Fig. 1, which is connected to the annular chamber 16. This reduces the back-pressure produced when the piston rises and provides a larger volume of air for sounding a warning whistle. Flanges 23, 51 ensure that the diaphragm 19 is folded in an orderly manner. In a second embodiment, Fig. 2, the reduction chamber 48 is provided in a traverse 50 which supports several suction cups 49 connected to the vacuum supply through conduits 52. Conduit 47 connects the chambers 48, 16.
Patent GB-771586-A (GB)
Title: Lubricating system for sewing machines
IPC: D05B71/00
Filed: 1955-07-18
Abstract: 771,586. Sewing-machines. INDUSTRIEWERKE KARLSRUHE AKT-GES. July 18, 1955 [July 19, 1954], No. 20709/55. Class 112. [Also in Group XXXIV] A lubricating system for a sewing machine includes a pressure pump arranged within the machine and having its suction side commuriicating with an oil reservoir and its pressure side communicating with parts of the machine to be lubricated, and a suction pump also within the machine having its suction side communicating with an oil-accumulating chamber in the head of the machine and being adapted to return the oil withdrawn from the chamber to the oil reservoir. As shown, a pressure pump 2 is arranged within a hollow casing 1 with its suction conduit 7 dipping into an oil pan 5. The oil is delivered through a conduit 12 to an oil distributor 13 having several branch points 16 .... 19, the points 16, 17, 18 leading through conduits to lubricating points of the driving parts in the lower part of the machine. A conduit 25 from branch point 19 leads up to a distributor 29 provided with branch points 33, 34, 35. The point 33 leads through a conduit 37 to the bearing for shaft 30 and to driving parts for sewing tools above the seam-forming station. Excess oil accumulates in oil sump 39 and is withdrawn through suction conduit 41 leading to a suction pump 44. The oil leaves this pump at 10 and returns by gravity to the reservoir 5: The branch point 34 is provided to supply oil under pressure from pump 2, this oil being fed through conduit 45 leading to the suction conduit 41. This ensures a proper suction effect of the pump 44 at low speeds of the machine. The branch point 35 leads by an overflow pipe 31 to a sight glass 27. The oil conduits may be of metal or of synthetic material with metallic connections.
Patent GB-588712-A (GB)
Title: Improvements relating to lubrication systems
IPC: F01M5/04
Filed: 1943-12-10
Abstract: 588,712. Lubricating systems. POWER JETS, Ltd., and WALKER, D. N. Dec. 10, 1943, No. 20744. [Class 12 (iii)] A diluent or thinner is supplied to the lubricating system of aero engines or other machinery on shutting down or during running by a gear wheel pump 8 driven by an electric motor 9 through a differential gear assembly 4, the other output spindle of which rotates a paddle wheel 2 in the outlet of the main lubricant tank 1 so that the delivery of the pump 8 is dependent on the viscosity of the lubricant. The motor 9 is controlled by a time switch 9A which may be controlled by a thermometer 10 in the tank 1. Alternatively the thermometer 10 may actuate a brake 7A on the paddle wheel spindle 3 or a valve in the outlet of the pump 8. The Provisional Specification states that the delivery of the diluent may be controlled by other means dependent on the oil viscosity such as the pressure difference caused by a restriction in a pipe line or on the two sides of a lubricant pump. It also states that the diluent pump may be in operation continuously.
Patent GB-1339847-A (GB)
Title: Process for the preparation of a conjugated diene polymer
IPC: C08F36/04
Filed: 1971-04-19
Abstract: 1339847 Conjugated diene polymerization process SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 19 April 1971 [2 Feb 1970] 20782/71 Heading C3P A polymer of a conjugated diene, optionally mixed with other monomers, e.g. styrene, is prepared by a process comprising the steps of: (i) polymerizing the diene at 20-90 C. in a hydrocarbon medium in the presence of an organolithium initiator until 7À5 to 50% of the diene is polymerized; (ii) coupling the resulting living polymer with at least a stoichiometric amount of a coupling agent capable of joining at least three polymer chains; (iii) adding fresh organolithium initiator; (iv) continuing the polymerization; (v) coupling the living polymer formed in (iv) in the same way as before, and so on. The reinitiation and coupling stages are repeated, each being carried out 2 to 20 times in all. By using a similar amount of initiator and degree of polymerization in each cycle, products with a narrow molecular weight distribution are obtained: the distribution may be broadened by varying either or both of these parameters from one cycle to another. The cis : trans ratio of the polymer produced in each cycle is also controllable, being dependent on the amount of initiator used. The process may also be applied to the preparation of block copolymers of formula A-B-(A-B) 2-5  where B is a polymer block derived from the conjugated diene, either a homopolymer or a copolymer with, e.g. styrene in which the diene predominates and A is a block, e.g. of styrene or a styrene-rich styrenediene copolymer. In this case the organolithium initiator is itself the living polymer block, A-Li. The examples describe the polymerization of isoprene in eight cycles of polymerization and coupling with sec-BuLi as the initiator and dimethyl or diethyl adipate as the coupling agent. SiCl 4  is also mentioned as a preferred coupling agent.
Patent GB-234682-A (GB)
Title: Improved sacking device
IPC: B65B67/12
Filed: 1924-09-03
Abstract: 234,682. Piombo, S. Sept. 3, 1924. Sack - holders. - The sack is carried by pins 14 projecting from cranked shafts 6, 7, mounted on the side members of a U-shaped horizontal frame 4 mounted adjustably on a vertical member 3 extending from a wheeled stand 1. The cranks 10, 11 of the shafts are connected by a link 17 so that when the one shaft 6 is rocked by the actuation of a handle 13 the other shaft is rocked in the opposite direction. The handle 13 is pivoted on the shaft 6 and normally falls into a catch formed by a member 17. A spring on the shaft 6 tends to maintain it in a position with the pins vertical. In operation, after the sack, which has been resting on the stand 1, with its upper end held open by engaging the pins 14, has been filled, the shafts are both turned inwards bv the handle 13 thus permitting the sack to fall from the pins. When the device is used with a sack of the drawcord type the sack is hung up and supported by the pins and the cord is passed over a hook 18. After the sack is filled the shafts are turned, allowing the sack to fall from the pins, and thus pulling the draw-cord tight. The cord is then freed from the hook by the operation of a treadle 24 connected to the hook.
Patent GB-922667-A (GB)
Title: Stable aqueous cutting fluid containing an amine salt of boric acid
Inventor: SLUHAN CLYDE ALBERT
IPC: C10M173/02
Filed: 1961-06-09
Abstract: A stable aqueous cutting fluid comprises a salt of boric acid and an aliphatic amine, having 1 to 3 aliphatic radicals each with 1 to 4 carbon atoms, and having at least one hydroxy group attached to a carbon atom, the amount of amine being at least the stoichiometric amount and may be up to 100% excess; and the composition also contains 5 to 40 mols. water per mol. of boric acid.  The amine is preferably triethanolamine.  The composition may also contain an unsaturated fatty acid with 18 to 22 carbon atoms, which may have a single hydroxy group as substituent, in amount of from 1/8 to 2/5 mols. per mol. of boric acid and containing sufficient amine in excess of that stated above to form a salt therewith.  Examples include oleic, linoleic, elaidic, linoleric, erucic, eleostearic and ricinoleic acids.  Nonionic wetting agents may also be used.  These are preferably of the soluble type, e.g. polyethoxy-esters of fatty acids, polyethoxyethers of fatty alcohols, the condensation product of an alkyl phenol with ethylene oxide, the sulphonated product of the condensation of an alkylphenol or an alkylnaphthol with ethylene oxide.  A preferred compound is an alkylated aryl polyether alcohol. Another ingredient is an antifoam agent.  Many examples are given including silicones and silicates.  1 to 7 g. of a silicone may be used per mol. of boric acid.  A gel-forming solvent may also be added to the composition.  Alcohols having more than 3 carbon atoms and ethers of these alcohols may be used in amount of from 20 to 60 g. per mol. of boric acid.  A rust inhibitor may also be added, e.g. an alkali metal borate or nitrite which also aid gel formation. Potassium compounds are preferred, e.g. 20 to 70 g. potassium tetraborate per mol. of boric acid.  A composition for use in said cutting fluid as antifoam agent comprises a mixture of silicones with other antifoam agents, e.g. sulphonated fish oils or high molecular weight saturated fatty acids.  The silicones preferably are those in which each saturated hydrocarbon group contains 14 to 24 carbon atoms, the total being at least 24.  The hydrocarbon groups may be substituted with alkoxy, nitro, halogen, or esterified sulphonic groups.ALSO:A salt of boric acid and an aliphatic amine having from 1 to 3 aliphatic radicals, each containing 1 to 4 carbon atoms and having at least one hydroxy group attached to a carbon atom is prepared by mixing boric acid with water and the amine.  Preferably the boric acid is finely divided and the mixture stirred until it is dissolved.  Up to 100% excess of the amine, e.g. triethanolamine, may be used.  The salt is used with numerous additives as an aqueous cutting fluid.  One such additive is a salt of the amine with an unsaturated fatty acid having 18 to 22 carbon atoms.
Patent GB-1457519-A (GB)
Title: Filter centrifuge
IPC: B04B11/02
Filed: 1974-05-10
Abstract: 1457519 Filter centrifuge KRAUSS-MAFFEI AG 10 May 1974 [19 June 1973] 20899/74 Heading B1D A filter centrifuge comprises a sieve drum 21 and an integral liquid collecting chamber 25. Liquid is drawn through the centrifuged solid by assistance of a vacuum in chamber 25 created by an injector pump 29 (or pumps) operated by an external source of liquid supplied through conduit 34 or by filtrate (Fig. 1 not shown). A swivellable tube 8 allows filtrate and external liquid to be removed. Tubes 24 through sieve drum wall may be extended (Fig. 1 not shown) to protrude into collecting chamber 25 .to maintain an air space between liquid and sieve wall. A valved air vent (15 Fig. 1 not shown) may allow controlled ingress of air to chamber 25.
Patent GB-390388-A (GB)
Title: Improvements in or relating to display showcases
IPC: A47F1/12
Filed: 1932-07-26
Abstract: 390,388. Cases for reels of thread. DAVIDSON, J. R., 50, Denmark Road, Moss Side, Manchester. July 26, 1932, No. 21032. [Class 18.] A case for displaying reels of thread has a number of fixed magazines 14 inclining downwards to the front of the case with their outlets 16 in line and a rod 17 is fixed in front of each line of magazines a distance from the outlets less than the diameter of a reel so that the foremost reel x in each magazine rests on the rod and the edge of the outlet of the magazine. As shown, the case has a glazed front 9 hinged to a bar 11 which may slide along battens 12 secured to the sides 3 of the case and the magazines are formed by partitions 15 fixed to inclined shelves 13.