baber/WOPTO huggingface dataset:
Patent GB-1043964-A (GB)
Title: Machine for cutting grass
Inventor: HOWARD ARTHUR CLIFFORD
IPC: A01D34/42
Filed: 1964-07-10
Abstract: 1,043,964. Grass cutters. ROTARY HOES Ltd. July 1, 1965 [July 10, 1964], No. 28485/64. Heading A1F. A grass cutting machine comprises a transverse, horizontal, rotatable shaft 9, and cutting blades 17 pivotally mounted between pairs of bracket members 11, the shaft being rotated so tha lowermost blade moves in the direction of movement of the machine. Each pair of bracket members has extending therebetween a stop member 15, which prevents the associated blade from being moved to its normal position under the action of centrifugal force. The blades have attached thereto weights 20 and the cutting edges 17b are formed on plates 17a bolted to the blades 17. The plates have a second set of holes, so that the plates can be repositioned when the edges are worn. A transverse bar 21 lays the grass at a convenient angle for cutting. The machine may be mounted on a tractor, and the shaft may be driven by the p.t.o. shaft.
Patent GB-984612-A (GB)
Title: Process and composition for phosphatizing metals
Inventor: VULLO WILLIAM JOSEPH
IPC: C23C22/03
Filed: 1963-07-18
Abstract: A water-free solution for phosphating the surfaces of metals, such as Fe, Al, Zn, Mg, Cd, or alloys thereof, comprises by weight 70-98% of a chlorinated hydrocarbon such as C2HCl3, C2Cl4, C2H2Cl4, C2H3Cl3, C2H4Cl2 or CH2Cl2, 0.1-6% of orthophosphoric acid, 1.5-25% of a monohydroxy alcohol such as an aliphatic or alicyclic alcohol containing 1-18 carbon atoms, e.g. n-butanol, and 0.1-0.5% of glacial acetic acid.  Numerous alcohols are specified. Unstabilized chlorinated hydrocarbons may be used with stabilizers such as olefins, acetylenic compounds, hydrocarbons, phenols, alcohols, esters, ethers and epoxides, heterocyclic compounds containing N and O or S in ring, aldehydes, mercaptans, alkyl cyanamides/thioureas/amines/isocyanates, aryl amines, guanidines, diols, oximes, ketones, nitriles, amides, nitrates, thiophenes, pyrroles, nitroalkanes, sulphones, azines, aryl stibines and/or sulphoxides. The solution may be initially treated with powdered iron or other metals being treated, e.g. between 0.01 and 0.1% by weight of the solution, prior to contacting the degreased steel or other metal surface with the solution, e.g. by immersion or spraying.
Patent GB-1030916-A (GB)
Title: Electrochemical synthesis
IPC: C25B3/23
Filed: 1964-07-10
Abstract: A cyclopropane ring compound is produced electrolytically at an anode immersed in a solution of an aliphatic carboxylic acid having at least 4 carbons, with or without an alkali metal salt of a carboxylic acid, preferably formed in situ from the same free acid with a caustic alkali such as KOH. For example, an aqueous electrolyte solution containing n-butanoic acid, partly neutralized with KOH, yields an off-gas containing cyclopropane, propene, hydrogen, CO2 and CO, which may be collected by water displacement. If the solution contains instead n-pentanoic acid or 2- or 3-methylbutanoic acid, methylcyclopropane with all the butene isomers, together with some cyclopropane, propene, ethylene, butane, are obtained at the anode, the cyclopropanes being separated by fractionation using a reflux condenser and extracted with ether. Non-aqueous solutions may be used containing methanol, ethylene glycol, acetonitrile or dimethyl sulphoxide. The anode may be of graphite, gold, nickel or brown lead oxide, and the cathode of graphite, copper, stainless steel, platinum, silver, nickel or lead.  The current density is preferably 0.01-0.5 amp/sq cm.
Patent GB-733542-A (GB)
Title: Improvements relating to ear protectors
IPC: A61F11/08
Filed: 1953-10-16
Abstract: 733,542. Ear protectors. HULTGREN, G. V. I. Oct. 16, 1953, No. 28623/53. Class 81 (2). An ear plug to be inserted in the external auditory canal consists of a body 2 of soft elastic spongy material in which the walls between the pores are perforate spongy material being surrounded by a skin which is removed from the two ends of the body only. The body 2 is made by casting so that an external skin is formed which is removed from the ends only. A stem 1 of hard or rubber-like synthetic resin is provided. The plug is made of a softened copolymers consisting substantially of vinyl chloride or of polyvinyl chloride, but may consist of polyisobutylene or polyvinyl butyral, the material chosen being dependent on the conditions under which the plug is to be used.
Patent GB-1334746-A (GB)
Title: Photographic layers which contain uv-absorbers
IPC: C08K5/23
Filed: 1971-06-18
Abstract: 1334746 Benzatriazole derivative AGFAGEVAERT AG 18 June 1971 [19 June 1970 24 July 1970] 28690/71 Heading C2C [Also in Divisions G2 and C4] A compound of the formula and useful as a U.V. absorbing compound in photographic elements is prepared by diazotizing o-nitroaniline with sodium nitrite, coupling the product with 2-see-butyl-4--tert-butylphenol. The resulting 2-nitro-phenylazo-2<SP>1</SP>- hydroxy-3<SP>1</SP>-sec-butyl-5<SP>1</SP>-tert-butylbenzene is reduced in alkaline medium with zinc dust to give the required compound.
Patent GB-952422-A (GB)
Title: Catalytic hydrocarbon conversion
IPC: C07C5/22
Filed: 1962-07-26
Abstract: Hydrocarbon conversion reactions are effected in the presence, as catalyst, of a sulphonated organic resin or a sulphonated coal having an exchange capacity of at least 0.5 milliequivalent per gram, a production of cumene from propylene and benzene at 75-85 DEG C. of 1-10 millimols per gram per hour, a substantial freedom from metal ions and either an AV or a Vp of at least 0.05 c.c./g.  (AV is the accessible volume and Vp the dry pore volume). The isomerisation of 3,3-dimethylbutene-1 to 2,3-dimethylbutene-1 is effected at 100 DEG C. and of cyclohexene to methylcyclopentene at 150-200 DEG  C.  The polymerization of propylene, butene, isobutylene, pentene, hexene, cyclohexene, styrene, butadiene or isoprene to dimers, trimers and tetramers can be effected at 0-250 DEG  C., up to 200 atmospheres, in the gaseous or liquid phase in the presence or absence of inert gases or solvents. Isobutylene can be selectively polymerized in the presence of other olefins.  The alkylation of benzene, toluene, xylene, ethylbenzene, isopropylbenzene, butylbenzene, diisopropylbenzene, tri-isopropylbenzene or naphthalene with ethylene, propylene, butene-1 butene-2, isobutylene, pentenes, hexenes, cyclopentene, cyclohexene, or methylcyclopentene may be effected at up to 250 DEG  C. and 100 atmospheres. When using olefin polymers as alkylating agents by choice of conditions the olefin may be introduced intact into the molecule or simultaneously depolymerized. Transalkylation and disproportionation may also be effected. Paraffins or cycloparaffins may be alkylated under similar conditions.  The catalysts used are sulphonated "popcorn" resins or porous bead resins obtained in the presence of a solvent removed after the polymerization; many monomers and "popping" or cross-linking agents are mentioned but styrene-divinylbenzene copolymers are preferred.  Sulphonated coals such as described in U.S.A. Specifications 2,191,059 and 2,191,060 may also be used.
Patent GB-1268114-A (GB)
Title: Method for improving water drainage from paper web on a wire-screen of a paper machine
IPC: D21H17/45
Filed: 1969-06-06
Abstract: 1,268,114. Papermaking. SEIKO KAGAKU KOGYO CO. Ltd. 6 June, 1969 [12 June, 1968], No. 28796/69. Heading D2A. The drainage of water from a paper web on the wire screen of a paper-making machine is improved by adding to the slurry an aqueous solution of modified polyacrylamide, stirring the mixture and feeding the mixture to the screen before the effect of the polymer disappears, in about ten minutes. The polymer is made by subjecting a water-soluble polyacrylamide having an average molecular weight between 100,000 and 600,000 to the Hoffmann degradation until more than 15% of the amide groups have been degraded to amine groups, and is used in solution at a pH between 3.5 and 5.5 in an amount equivalent to 0.01 to 0.1% of degraded polyacrylamide based on the dry weight of the pulp. In Example 1, the effect of this drainage aid is compared with those of unmodified polyacrylamide, modified acrylamide in which 5% of the amide groups have been converted, and polyethylenimine. In Example 2, a multiply paperboard is made, the first ply being of fresh pulp and sized with rosin-alum, the last of mixed waste paper also sized with rosin-alum, the others of waste paper and unsized; here again the performance of the present drainage aid is compared with that of polyethyleneimine.
Patent GB-798094-A (GB)
Title: Improvements in and relating to self-priming centrifugal pumping plant
IPC: F04D9/04
Filed: 1955-10-10
Abstract: 798,094. Centrifugal pumps. SOUTHERN, J., and WORTHINGTON-SIMPSON, Ltd. Oct. 3, 1956 [Oct. 10, 1955], No. 28822/55. Class 110 (1). A centrifugal pump is primed by a priming pump which has its suction connected to the centrifugal pump suction and its discharge connected to a separator chamber for separating liquid from air, gas or vapour delivered by the priming pump; on completion of priming, means responsive to conditions in the centrifugal pump disconnect the suction of the priming pump from the centrifugal pump and connect it to the separator chamber to unload the priming pump. During priming, a liquid ring pump 2 draws air or vapour from the suction chamber 6 of the centrifugal pump 1 by way of a pipe 29 and a non-return valve 31 and delivers it at 10 to a separator tank 8, where any liquid drawn off with the air or vapour is separated and returned to the centrifugal pump through a pipe 5. The air or vapour is vented to atmosphere through a vent valve 12 and a connection 11 having a non- return valve 14 and, preferably, a filter 13. The vent valve 12 and a valve 15 controlling the return of liquid through the pipe 5 are jointly controlled by a float 16. Sealing liquid for the liquid-ring pump 2 is supplied from the tank 8 through a pipe 4 or from a separate source. On completion of priming, a float 25 actuates a valve 21 to disconnect the pipe 29 from the suction chamber 6 and connect it by way of a pipe 19 and a non-return valve 18 to the vent connection 11, so that the liquid-ring pump 2 draws in air and becomes unloaded. The centrifugal pump discharge is provided with a non-return valve 37 and a relief valve 35, the latter being connected through a duct 33 to the pump suction. Instead of being operated by a float, valve 21 may be operated by a non- return valve responsive to pressures in the pump. According to the Provisional Specification, where the valve operation is by means of a non-return valve instead of by a float, the non-return valve is located in the pump discharge.
Patent GB-289561-A (GB)
IPC: C10G27/04
Abstract: 289,561. Petroff, G. Feb. 1, 1927. Mineral and tar oils, purifying.-Naphtha distillates, petroleum, cracked oils, and oils obtained by the dry distillation of bituminous fossils, are deodorized by passing air or other gas containing free oxygen through a series of vessels and containing the oil, heavy metal salts of fatty, naphthenic, or resin acids being dissolved in the oil in the first vessel, and metal turnings or powder being present in the others. Such salts of lead, manganese, cobalt, copper, zinc, iron, calcium, and chromium are specified. In an example petroleum that has been purified by acid and alkali is filled into 3 vessels connected in series, and compressed air is forced for 40-60 hours into the first maintained at 90' C. and containing manganese stearate; the air and vapours pass into the second vessel maintained at 75‹ C. and containing copper turnings, and then into the third maintained at 30-40‹ C. and containing lead turnings. Acids, in part dissolving in the oil and in part settling out, are formed in the first vessel. The oil is afterwards treated with 1.81-1.84 sulphuric acid, or fuming sulphuric acid, or sulphur trioxide, and then with alkali.
Patent GB-159291-A (GB)
Title: Improvements relating to petrol filters
IPC: B01D35/00
Filed: 1919-11-21
Abstract: 159,291. Errington, A. E. H. Nov. 21, 1919. Strainers fitted at end of pipes. - A strainer, intended more particularly for use on motor cycles, comprises a gauze cylinder A projecting into the petrol tank and attached at one end to a slotted plunger B adapted to fit into the outlet tap C. As shown, the plunger is made in two portions with sides b, b<1> meeting at the top which form a frame for the gauze A. The two portions may be soldered together. Reference has been directed by the Comptroller to Specification 102,219.
Patent GB-1536802-A (GB)
Title: Grading equipment
IPC: G01G11/00
Filed: 1977-07-11
Abstract: 1536802 Grading by weight OTTO NIEDERER SONS Inc 11 July 1977 [13 July 1976] 28979/77 Heading G1W Apparatus for grading articles comprises a plurality of balance beams 8 each with means 14 for supporting an article, means 30 holding each beam in a position for receiving an article and means 34 for initiating movement of the beam towards an article discharge position when the influence of means 30 is removed. In egg grading apparatus the beam is held against a stop 28 by bar 30 during loading. The stop is carried on the free end of a leaf-spring 34 fixed at 36. When the bar is removed the spring urges the beam upwards. Underweight articles not off loaded are moved by a reciprocating bar 18 to the next balance arm By overcoming inertia when the article nearly balances the counterweight 26, the process is speeded up. The spring also acts as a damper.
Patent GB-243711-A (GB)
IPC: F27B3/00
Filed: 1925-11-17
Abstract: 243,711. W³st, F. Nov. 27, 1924, [Convention date]. Reverberatory furnaces; charging.-In a reverberatory furnace a, of the kind to which the material is fed through a pre-heating shaft e serving also as the chimney, a hole or recess f extends across the rear wall of the shaft e at the level of the gas outlet passage d to prevent the formation of a dam at this point.
Patent GB-862062-A (GB)
Title: Improved torque transmitter
IPC: F16H61/00
Filed: 1959-08-25
Abstract: 862,062. Change-speed control. GENERAL MOTORS CORPORATION. Aug. 25, 1959 [Oct. 6, 1958], No. 29028/59. Class 80 (2). [Also in Group XXVIII] In a motor car or the like, a torque-transmitting device 7 which may be a mechanical change-speed gear having fluid-pressure actuated ratio-establishing clutches and/or brakes or similar fluid-actuated torque transmitting elements, comprises an input shaft 1 driving a pump 5 (not further described) drawing oil from a sump 11 and passing it through a one-way valve 14 to a pipe 15 and then through an inlet pipe 21 into the torque transmitting device, an output shaft 3 carrying a cam 31 which drives a pump 9 also drawing oil from the sump and passing it through a one-way valve 19 to the pipes 15, 21, the arrangement being such that when the input driven pump 5 is operated the drive to the output pump 9 is disengaged, but when the input-driven pump is not operated, rotation of the output shaft 3, as for a towed start, drives the pump 9 which then supplies oil under pressure to the pipes 15, 21 and the torque transmitting device. The pump 9 comprises a piston 25 reciprocated in a cylinder 23 and having a one-way valve 35 therein opened to admit oil from a space 45 at its lower side to a space 47 at its upper side. A spigot 27 on the piston 25 engages a pin 29 in turn engaging the cam 31 fast upon the output shaft 3. When the pump 5 operates, and the pipe 15 is pressurized, a one-way valve 17 is opened by the pressure in a pipe 15a acting on the base of a valve piston 55 against the bias of a spring 61, oil flowing therethrough to a pipe 49a and a port 49 leading into the space 47 above the piston 25, which is accordingly forced downwards against the bias of a spring 33 to disengage the pin 29 from the cam 31. If, however, the input shaft 1 and the pump 5 are inoperative, the pressure in the pipe &c. 49a, 49 is vented through the oneway valve 19 and the piston 25 is forced upwards by the spring 33 to engage the pin 29 with the cam 31. On rotation of the cam 31, the piston 25 is pushed downwards so that reduction of pressure in the space 47 above the piston draws oil through the one-way valve 35 from a space 45 below the piston. On further rotation of the cam 31, the spring 33 forces the piston 25 upwards again, so oil is pumped through the port 49 and the one-way valve 19 into the pipes 15, 21, additional oil at the same time being drawn up into the space 45 below the piston through a pipe 43 from the sump 11.
Patent GB-338279-A (GB)
Title: Improvements in and relating to light-sensitive apparatus
IPC: H01J40/14
Filed: 1929-09-25
Abstract: 338,279. British Thomson-Houston, Ltd., (Assignees of White, W. C.). Oct. 4, 1928, [Convention date]. Television.-A light-sensitive cell 1, Fig. 1, illuminated by a source of varying intensity 7, has the resulting current through it increased by the illumination of an auxiliary source of light 2 energized or controlled by the current passing through the cell, the auxiliary source 2 therefore varying in luminosity in accordance with the source 7. The source 2 may comprise a glow lamp. The initial light stimulus should determine the initiation and maintenance of the glow discharge, and the regeneration may be controlled by changing the amount of light supplied to the cell 1 from the lamp 2 by changing the distance between or shunting the lamp 2 with a variable resistance. By providing a combination of inductance and capacity in the circuit, oscillations may be developed whose maintenance may or may not be determined by the initial light source. Should' the current through the cell be insufficient to energize the glow lamp 2, an amplifier may be provided between the cell 1 and lamp 2 as in Fig. 2 in which the cell 1 is included in the input circuit of a valve 5, and the lamp 2 in the output circuit. The output of the system may be taken from resistance 4 or a. transformer 6 designed to pass either audio or radio frequencies. The invention is applicable to photophones, television, and related arts and the actuation of traffic signalling or street lighting apparatus.
Patent GB-866317-A (GB)
Title: Unloader apparatus for stacked articles and the like
IPC: B65G59/02
Filed: 1958-09-11
Abstract: 866,317. Stack unloading apparatus. BARRYWEHMILLER MACHINERY CO. Sept. 11, 1958 [July 25, 1958], No. 29118/58. Class 94(1). An apparatus for unstacking a loaded pallet P, Fig. 1, comprises means 25 for pushing each column 2 of stocked articles C in sequence from the pallet P on to a plate 43 of a lifting device 28, and oscillating sweep means 71 that shifts each article in turn from the lifting device 28 to a discharge conveyer 57. An article engaging roll 66, Fig. 3, at the top of the lifting device 28, has a surface speed greater than that of the lift device 28 and causes each uppermost article to be raised upwardly from the lower articles in advance of the action of the sweep means 71. The motion of the sweep means 71 is initiated when the articles on the lift 28 engage a stack sensing means 82. The sensing means 82 has removable contact faces 83, 84, whereby the instant of operation of the sweep can be adjusted according to the height of the articles being handled. The sweep, on contacting the article, imparts a further lifting force to it before pushing it over the roller 66 and on to the conveyer 57. A safety switch 64 on the conveyer 57 stops the apparatus if the sweep 71 endeavours to transfer an article on to the conveyer 57 before the previous article on the conveyer has moved out of position. The apparatus is operated by electrically controlled pressure fluid circuits, the correct sequence of operation being controlled by a plurality of limit switches and timer devices.
Patent GB-419333-A (GB)
Title: Improvements in collapsible cylindrical containers for liquids
IPC: B65D35/00
Filed: 1933-10-20
Abstract: 419,333. Collapsable containers. IDEN, M. W., 175, Bahrenfelderstrasse, Altonaon-Elbe, Germany. Oct. 20, 1933, No. 29147. Convention date, June 3. [Class 11.] Cylindrical collapsable containers for milk &c. are formed of soft metal, preferably aluminium, with a flat-base 2 at one end, the the other end being closed by pressing together the walls and folding them over or fusing them together. For use, pouring and vent holes 5, 6, are made in the edges of the container close to the sealed end, and after use this end is rolled to close the holes, thus re-sealing the container with the remaining contents, further holes being formed as a fresh supply of milk &c. is required. Reference has been directed by the Comptroller to Specifications 14369/94 and 11155/05, [both in Class 11].
Patent GB-1206892-A (GB)
Title: Device for gripping hypodermic needles
Inventor: BOUTROY RAYMOND
IPC: A61M25/06
Filed: 1968-06-19
Abstract: 1,206,892. Clamps. R. BOUTROY. 19 June, 1968 [22 June, 1967], No. 29166/68. Heading E2B. [Also in Division A5] A gripping device for a hypodermic needle comprises a flat plate which can be held between the fingers, and a gripping means mounted on the plate, which means is manually operable to grip the needle in a plane perpendicular to the plane of the plate. The plate and/or gripping means is provided with an aperture, the hypodermic needle being held in the aperture by a means which may be in the form of a threaded member or a tensioned member. A gripping means comprising a threaded member is shown in Fig. 6 wherein a plate 16 has mounted thereon a bar 15 which is provided with a needle receiving aperture 18, which aperture may be tightened around a needle by the screw 17. A gripping means comprising a tensioned member is shown in Fig. 11 wherein an aperture 49 is formed between the tensioned levers 45, which levers are held in the position shown by flat spring 47 and are pivotable about the shafts 46 mounted on the plate 44.
Patent GB-432533-A (GB)
Title: Improvements in cellulose mixed and higher ester compositions containing trialkyl phosphates
IPC: C08K5/521
Filed: 1933-10-21
Abstract: Compositions for the production of films, artificial silk, lacquers, moulded articles, and the like, comprise an organic ester of cellulose containing an acyl group having more than two carbon atoms, and a lower trialkyl phosphate.  Cellulose esters specified are the acetate-propionate, acetate-butyrate, acetate-stearate, propionate, butyrate, and stearate; the trialkyl phosphates are tributyl phosphate and others having less than six carbon atoms in the alkyl group.  A composition for making films or sheets comprises unhydrolysed cellulose acetate-propionate dissolved in ethylene chloride, to which is added tributyl phosphate in amount from 10--80 parts to 100 parts of cellulose ester.  Comparative tests are given of films made with and without the trialkyl phosphate.ALSO:Compositions for the production of films, artificial silk, lacquers, moulded articles, and the like, comprise an organic ester of cellulose containing an acyl group having more than two carbon atoms, and a lower trialkyl phosphate.  Cellulose esters specified are the acetate-propionate, acetate-butyrate, acetate-stearate, propionate, butyrate, and stearate; the trialkyl phosphates are tributyl phosphate and others having less than six carbon atoms in the alkyl group.  A composition for making films or sheets comprises unhydrolyzed cellulose acetate-propionate dissolved in ethylene chloride, to which is added tributyl phosphate in amount from 10-80 parts to 100 parts of cellulose ester.  Comparative tests are given of films made with and without the trialkyl phosphate.