baber/WOPTO huggingface dataset:
Patent GB-1443634-A (GB)
Title: Elastomer-free fabric surface for power transmission belt tooth facing
IPC: F16G1/28
Filed: 1974-09-06
Abstract: 1443634 Moulding transmission belts GATES RUBBER CO 6 Sept 1974 [7 Sept 1973] 39012/74 Heading B5A [Also in Division F2] To provide an elastomer free fabric working surface on a positive drive elastomeric power transmission belt an elastomer impervious material 20 is applied to the intended working surface of the fabric 22 prior to incorporating the latter with the elastomer. The material 20 may penetrate up to 60% of the thickness of the fabric and may be applied to the latter by hot pressing a sheet thereon, e.g. polythene, by calendering, brushing, dipping, or spraying a resinous layer thereon, e.g. p.t.f.e., latex, silicone or by electrostatically adhering material thereto. The material 22 may have poor abrasion resistance and thus be rapidly removed as a result of using the belt or it may remain on the belt during its use. The belt may be made by centrifugally casting the elastomer under vacuum in an annular mould cavity 41 defined between mould parts 40, 42. One of the latter, e.g. inner mandrel part 40 is provided with teeth defining grooves, into which the fabric/material, 22/20 is urged by tensile reinforcing material, e.g. fabric or strands 18 wound therearound prior to the introduction of the elastomer via an inlet port 46 and distributer plate 48. The elastomer of the belt teeth 14 and of the overchord 12 may be the same or different The overchord may be provided with multiple Vs or cogs by post-moulding skiving. The tensile reinforcing material may comprise polyamide, cord, fibre glass, polyester cord or wire. The fabric 22 may be of cotton, polyester, polyamide, hemp, jute, or fibre glass. The elastomer may be polyurethane, chloroprene, polysulphide, rubber silicone, a plastisol carboxylated butadieneacrylonitrile or a polyester or polyether based resin.
Patent GB-974917-A (GB)
Title: Preparation of a modified mannitol product
IPC: A61K9/20
Filed: 1962-10-16
Abstract: Solid mannitol of modified form is obtained by dissolution in a volatile solvent, spraying said solution as fine droplets into a stream of heated inert gas, removing the vaporized solvent and separating the dry mannitol particles. The solvent may contain one or more pharmaceutically acceptable film forming agents, e.g. a cellulose ether, a gum such as tragacanth, guar or accacia, a polymer e.g. polyvinyl pyrrolidone, polyvinyl alcohol, or polivinyl acetate, gelatin, a wax or waxy substance e.g. stearic acid, cetyl alcohol, hydrogenated castor oil, or carnuba wax. It is preferred to heat the gas to a temperature above the boiling point of the solvent, especially above 100 DEG C., and to employ a suspension of mannitol in a saturated solution thereof.  The use of chloroform and water as the volatile solvent is illustrated in the examples, which also include the various film forming agents. The modified mannitol may be used as an excipient in pharmaceutical tablet compositions (see Division A5). A number of suitable formulations of which are given.ALSO:The use, as excipient, of spray dried mannitol (see Division C2) with optionally incorporated pharmaceutically acceptable film - forming agents, e.g. cellulose ethers, guar gum, tragacanth or accacia, polyvinyl pyrrolidone, acetate or alcohol, gelatin or waxes such as stearic acid, cetyl alcohol, carnauba, hydrogenated castor oil, having improved flow and compression characteristics is illustrated in compositions for tableting.  Examples are given for compositions containing: (a) Folic acid, (b) Ascorbic acid, (c) Phenobarbital, (d) Riboflavin, (e) Pentaerythrityl Tetranitrate, (f) Aspirin, (g) Niacinamide, (h) Phenelzine, (i) Dextromethorphan.
Patent GB-824895-A (GB)
Title: Improvements in or relating to thermal power plants
IPC: G21C1/12
Filed: 1957-12-19
Abstract: 824,895. Nuclear reactors. ESCHER WYSS A. G. Dec. 19, 1957 [Dec. 20, 1956], No. 39511/57. Drawings to Specification. Class 39(4). In a ship's power plant, the working fluid, helium gas is heated in a nuclear reactor and drives both the main propulsion turbine and a compressor turbine circulating the gas. Two annular heat exchangers are mounted concentrically round the reactor. The gas enters the inner exchanger from the compressor, passes through to the reactor, is heated therein and then is expanded in the turbines. On leaving the latter it again passes through the inner exchanger, on the opposite side, so as to heat the incoming gas. After leaving the inner exchanger the gas flows to the outer heat exchanger, which is liquid cooled, and is returned to the compressor.
Patent GB-900981-A (GB)
Title: Improvements relating to castors
Inventor: TOWNSEND CLAUDE MORTIMER
IPC: B62D7/04
Filed: 1958-12-09
Abstract: 900,981. Road vehicle undercarriages. AUTOSET (PRODUCTION) Ltd. March 1, 1960 [Dec. 9, 1958], No. 39590/58. Class 108(2). A castor comprises a pair of spaced wheels 4, 4 each mounted for rotation in a fork 5 carried by a common bracket 7 rotatable on a generally vertical axis 9, each fork being connected to the bracket by a resilient suspension 10 whereby each wheel is independently sprung. Each suspension comprises a rubber block, for example of 75 Shore hardness, bonded to or mechanically connected between clamping plates 12, 13. The bracket 7 may be temporarily locked to the superstructure by a bar inserted in registering holes and a screw operated brake pad 22 is provided for each wheel.
Patent GB-815818-A (GB)
Title: Veterinary compositions containing organotin compounds
IPC: A61K31/32
Filed: 1957-12-24
Abstract: The invention comprises stannonium compounds of formula [RmSn(Am)y]X4-m, wherein R is an aliphatic, aromatic or heterocyclic group which may be substituted, m is 2 or 3, Am is amine or heterocyclic base, y is 1 or 2 and X is halogen, or a residue of a carboxylic acid, an ester thereof, a mercaptoacid, an ester thereof, an arylsulphonic acid, a sulphonamide, a dithiocarbamate, an isodithiocarbamate or a xanthate, or an ORa or SRa group wherein Ra is a hydrocarbon group which may be substituted.  They may be prepared by reacting an organotin compound of formula R2SnX2 or R3SnX with the amine or base.  R may be an alkyl, alkenyl, alkaryl or aralkyl group having up to 22 carbon atoms in the open chain. Specified amines and bases include octyl amine, lauryl amine, stearyl amine, oleyl amine, cyclohexylamine, benzyl amine, aniline, p-phenylene diamine, dioctyl amine, dicetylamine, dilauryl amine, dodecylmethyl amine, dicyclohexyl amine, methyl aniline, piperidine, morpholine, piperazine, phenothiazine, tripropyl amine, dimethyl benzyl amine, trilauryl amine, pyridine, dimethyl lauryl amine, dimethyl aniline, methyldicyclohexylamine, quinoline, 8-hydroxy-quinoline, glyceryl diethylamine, cyclohexyldiethylamine. Specified X groups include butoxy, lauroxy, phenoxy and the sulphur analogues, and the residues of the following: acetic, lactic, stearic, maleic, fumaric, citric, phthalic, benzoic and a -mercaptolauric acids, mercaptoethanol, iso-octylmercaptoacetoate and laurylmercaptan.  The compounds are anthelmintics (see Group VI). The preparation of bis-(piperazino)-dibutylstannonium dilaurate by mixing piperazine with dibutyltin dilaurate is described. Specifications 814,064 and 815,819 are referred to.ALSO:An anthelmintic composition for oral ingestion by fowls contains a compound of formula [RmSn(Am)y]X4-m, wherein R is an aliphatic, aromatic or heterocyclic group which may be substituted, m is 2 or 3, Am is amine or heterocyclic base, y is 1 or 2 and X is halogen, or an ORa or SRa group wherein Ra is a hydrocarbon group which may be substituted, or a residue of a carboxylic acid, an ester thereof, a mercaptoacid, an ester thereof, an arylsulphonic acid, a sulphonamide, a dithiocarbamate, an isodithiocarbamate or a xanthate.  Preferably, Am in the above formula is piperazine, phenothiazine, dilaurylamine, X is chlorine, laurate, acetate and y is 2.  Where Am and X comply with these requirements R may conveniently be butyl, phenyl, octyl. Where R is butyl m may be 2 or 3, where R is phenyl m may be 3, where R is octyl m may be 2.  Specifications 814,064 and 815,819, [both in Group IV (b)], are referred to.
Patent GB-931887-A (GB)
Title: Improvements in or relating to photographic camera objectives
IPC: G03B3/02
Filed: 1961-11-08
Abstract: 931,887. Camera objective fitting. CARL ZEISS-STIFTUNG, and A. H. LOMB, [trading as COMPUR - WERK FRIEDRICH DECKEL OHG]. Nov. 8, 1961 [March 23, 1961], No. 40040/61. Class 98 (1). A bayonet coupling is provided for fitting exchangeable objectives to a camera body, in which one of the co-operating surfaces of the objective and body is provided with a thin layer of plastic material to reduce friction between the surfaces. In the embodiment shown in Fig. 3, an objective mount 1 is provided with an adaptor tube 2 which engages by means of lugs 3, with inclined surfaces 5, corresponding bayonet projections 4 in the camera body. Surfaces 12, 14 of the objective mount projection tube 7 and camera body respectively are pressed together by means of springs 10. Surface 12 is provided with a plastic layer 13.
Patent GB-1242585-A (GB)
Title: Apparatus and method for the production of dental mixtures poor in porosity
Inventor: BERGENDAL GUNNAR
IPC: A61C5/06
Filed: 1968-08-22
Abstract: 1,242,585. Mixing in vacuum. G. BERGENDAL. 22 Aug., 1968 [28 Aug., 1967], No. 40122/68. Heading B1C. [Also in Division C7] In a method of preparing a dental amalgam, the ingredients are mixed together in a mixing chamber in vacuo in order to produce an amalgam free from air bubbles. The ingredients may be mixed by means of a spatula, which is inserted through a wall of the mixing chamber, Fig. 2 (not shown), or by shaking the mixing chamber.
Patent GB-1291627-A (GB)
Title: Processes and compositions for the derusting of ferriferous surfaces
IPC: C23C22/78
Filed: 1970-08-21
Abstract: 1291627 Derusting AMCHEM PRODUCTS Inc 21 Aug 1970 [25 Aug 1969] 40289/70 Heading C7E A ferriferous surface is derusted by contact with an aqueous solution containing at least 2 wt% citric acid and is subsequently phosphatised by an essentially chromic acid-free phosphatising solution. Preferred amounts of citric acid are 5-25%, but solutions up to saturation (1 part acid: 0À75 parts water) may be used. A solution for the first step of the process is claimed which comprises at least 2 wt% citric acid and isopropanol or ethylene glycol monobutyl ether, the citric acid: water ratio being not more that 1:0À75. Where at least 5% citric acid is present, a conventional rust-remover such as H 3 PO 4  may be added. Optional ingredients are (a) 0À01 to 1À0% of surfactant, either non-ionic such as monylphenoxy polyethoxy ethanol or anionic, e.g. an alkylaryl sulphonate (b) an antifoam such as oleyl alcohol and (c) 0À05-2% of a thickener, e.g. methylcellulose, carboxymethyl cellulose polyoxyethylene, methylvinylether/meleic anhydride copolymer, guar gum, or gum arabic. Contact with the metal is for 2-5 minutes at 10-50‹C and the subsequent phosphatisation is, for example, zinc phosphatising preceded by an alkaline rinse.
Patent GB-1344220-A (GB)
Title: Cutting mechanism
IPC: G03G15/00
Filed: 1972-08-31
Abstract: 1344220 Cutting apparatus ITEK CORP 31 Aug 1972 [23 Sept 1971] 40357/72 Heading B4B A cutting mechanism for cutting, e.g. photographic film comprises a first blade 12 fixed to a frame member 15, a second blade 14 secured to one of the ends of a pair of springs 16, 18, the other ends of the springs being secured to the frame member 15, the mounting being such that the blade 14 can be moved relative to the blade 12 to effect a cut without any alteration of  a preset shear angle between the blades. The springs 16, 18 are held together by brackets 20, 22, the bracket 20 being secured to the frame member 15 and the bracket 22 to the blade 14 via a leaf spring 24. The blade 14 is reciprocated by means of an electric motor 28 and crank drive 30, 32. In addition to the spring 24, the blades are maintained in contact by a roller 26; alternatively, the blades may be bowed in order to maintain contact, the roller then being dispensed with. In a modification the motor may be used to cock the springs 16, 18, the latter then providing the cutting force alone.
Patent GB-1190169-A (GB)
Title: Rapid Shut-Down System for Water-Cooled Nuclear Reactors
IPC: G21C9/00
Filed: 1968-08-23
Abstract: 1,190,169. Controlling reactors. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. 23 Aug., 1968 [25 Aug., 1967], No. 40386/68. Heading G6C. A rapid shut-down system for a water-cooled nuclear reactor comprises a plurality of absorber rods with a combined drive for each consisting of a mechanical drive for normal setting movements and an hydraulic drive for the rapid shut-down, and pressure tanks 15, 15<SP>1</SP> which are partially filled with an hydraulic medium, with a cushion of pressure gas above the surface of the liquid, which are provided with means 26, 27 for regulating the gas pressure and the liquid level, respectively, and which are in communication through drive connections 10, shut-off valves 11 and non-return valves 12, 12<SP>1</SP>, 12<SP>11</SP> with the hydraulic drives, all the pressure tanks 15, 15<SP>1</SP> being connected simultaneously to all the hydraulic drives. The pressure tanks 15, 15<SP>1</SP> form two groups, each group being connected by a line 14 to a closed-circuit pipeline 13<SP>1</SP>, 13<SP>11</SP>, respectively. A plurality of drive connections 10 are connected jointly through a group of non-return valves 12<SP>1</SP> to the pipeline 13<SP>1</SP> and hence to the pressure tanks 15, also through a group of non-return valves 12<SP>11</SP> to the pipeline 13<SP>11</SP> and hence to the pressure tanks 15<SP>1</SP>. Each group of pressure tanks 15, 15<SP>1</SP> is capable of effecting the rapid shut-down alone. Upstream of their common delivery line 14, the pressure tanks each have a quickopening valve 16 which is opened in an emergency so that pressure medium can flow out to the hydraulic drives. Water may be used as the pressure medium and nitrogen as the gas cushion. Pressure medium enters the tanks 15 through a line 18 and valves 25, and leaves through valves 24 and a line 19. Gas enters the tanks through a line 20 and a valve 22, and leaves through a valve 23 and a line 21. The operation of the valves 22, 23 and the valves 24, 25 is controlled by a pressure regulator 26 depending on the gas pressure in the tanks and a level regulator 27 depending on the amount of pressure medium in the tanks, respectively. The tanks in both groups are instrumented in the same manner. The retention of an absorber rod in its shut-down position is ensured by a locking means operating like a ratchet, a pawl engaging in sawtooth-like recesses in a member connected to the absorber rod and preventing the rod from slipping back.
Patent GB-1452962-A (GB)
Title: Method of refining molten metal
IPC: C21C5/48
Filed: 1973-08-29
Abstract: 1452962 Metallurgical converters USS ENGS & CONSULTANTS Inc 29 Aug 1973 [29 Aug 1972] 40726/73 Heading F4B [Also in Division C7] Molten metal, e.g. steel, is refined in a vessel 10 by blowing gas through at least one tuyere 16 extending upwardly through the bottom of the vessel, each tuyere having an hydraulic diameter between <SP>1</SP>/ 25 th and <SP>1</SP>/ 13 th of the depth of the molten metal bath and the total tuyere horizontal cross-sectional area in sq. cm. being from one to three times the bath size in metric tons. As shown, the tuyeres are mounted in a removable bottom 12 of the vessel and comprise concentric inner and outer tubes 30, 34. The inner tube 30 delivers oxygen and lime to the bath and the annular space 38 between the tubes delivers a jacketing gas, e.g. natural gas. The tuyeres may be vertical or at an angle to the axis of the vessel.
Patent GB-1439769-A (GB)
Title: Fischer tropsch hydrocarbon synthesis
IPC: C07C1/00
Filed: 1973-08-30
Abstract: 1439769 Fischer-Tropsch synthesis SOUTH AFRICAN COAL OIL & GAS CORP Ltd 30 Aug 1973 [5 Sept 1972] 40927/73 Heading C5E A method of controlling the relative yields of low molecular weight, predominantly gaseous, aliphatic hydrocarbons and higher molecular weight hydrocarbons in the catalytic Fischer- Tropsch synthesis of hydrocarbons from feed gases comprising hydrogen, carbon monoxide and carbon dioxide in the presence of an iron catalyst, said method comprising reacting said feed gases in a reactor in the presence of a catalyst having a basicity equal to that of a Fischer-Tropsch catalyst consisting essentially of iron and not more than 0À001 g K 2 O/m<SP>2</SP> of effective surface area of the catalyst, the K 2 O being evenly distributed on the surface of the catalyst and at a temperature in excess of 250‹ C. and either (a) adapted to suppress the formation of methane and other gaseous hydrocarbons in favour of the production of higher molecular weight products in that the catalyst basicity as above defined corresponds to from 0À0005 to 0À001 g K 2 O/m.<SP>2</SP> and the partial pressure of CO 2  measured in the reactor near the feed inlet exceeds 4 kg./cm.<SP>2</SP> but is maintained below 7 kg./cm.<SP>2</SP>; or (b) adapted to favour the formation of methane and other gaseous hydrocarbons and to suppress the formation of higher molecular weight products in that the catalyst basicity as above defined corresponds to from zero to 0À0005 g. K 2 O/m.<SP>2</SP> and the partial pressure of CO 2  measured in the reactor near the feed inlet is in excess of zero and up to 3 kg./cm.<SP>2</SP>.
Patent GB-409337-A (GB)
Abstract: 409,337. Tube joints. BOUR, E. F., Forest Side, Mauritius. Oct. 26, 1932, No. 29926. [Class 99 (i).] In a road surface sign comprising an illuminated casing 2, 3 embedded in the road surface, the end 5 of a tubular lead sheath 7 housing the wires of an electric lamp L, is spread over a lug 6 and covered by a cap 4 to form a waterproof joint. Specification 206,552, [Class 75 (iv)], is referred to.
Patent GB-1185232-A (GB)
Title: Improvements in or relating to Coaxial Cables for the Transmission of High Frequency Electric Currents
Inventor: HARTHMAN FRANCIS PETER
IPC: H01B11/18
Filed: 1967-09-07
Abstract: 1,185,232. Coaxial cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. 6 Sept., 1968 [7 Sept., 1967], No. 40975/67. Heading H1A. A coaxial cable comprises an inner conductor 5 supported within an outer conductor 6 by a spacer comprising a series of interconnected annular plates 1 of insulating material e.g. polyethylene each of which is inclined at an acute angle e.g. 60 degrees to each adjoining plate and is hinged to it, the hinge of any two interconnected plates being displaced angularly about the axis of the spacer relatively to the hinge of either one of the said two plates with the next plate of the series. As shown, two adjoining plates are hinged together about the line of intersection 3 of their planes. The spacer may be made from a blank (Fig. 1, not shown) consisting of mutually spaced annular plates of elliptical shape, the blank being suitably folded along the lines of intersection 3. The plates are then threaded on the inner conductor 5 and positioned obliquely at a given angle to the cable axis and so spaced that when the outer conductor 6 is applied the external edges of the plates lie against the internal surface of the outer conductor throughout a major part of their peripheries. The external and/or internal edges of each plate may be of polygonal form or of corrugated or toothed form. The plates need not be in direct contact with the conductors but rather are interposed between layers of insulating material.
Patent GB-1103960-A (GB)
Title: Improvements in compressors
Inventor: GODWIN JOHN BOULDING
IPC: F04B45/053
Filed: 1965-09-27
Abstract: 1, 103, 960. Compressors. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 22, 1966 [Sept. 27, 1965], No. 41016/65. Heading F1N. In a compressor having a diaphragm 19 reciprocated by pulsating liquid in a chamber 18 to discharge gas through an outlet valve 27 into a reservoir 26, a relief valve 10 for limiting the pressure across the diaphragm is provided which is responsive to the differential pressure between the reservoir 26 and the chamber 18. The valve 10 comprises a needle 11 having at one end a head 16 subjected through a port h to the pressure in chamber 18 and a shoulder 12 at the other end subjected to the reservoir pressure. When the pressure differential is above a predetermined value determined by the areas of the port h and shoulder 12, the pressure in the chamber 18 is relieved to an auxiliary chamber 23 connected through a non-return valve 24 with the chamber 18.
Patent GB-1155370-A (GB)
Title: Photocopy Machine having Moving Carrier for Original
IPC: G03B27/50
Filed: 1966-09-14
Abstract: 1,155,370. Photo-copying apparatus. AMERICAN PHOTOCOPY EQUIPMENT CO. Sept. 14, 1966 [Sept. 15, 1965], No.41118/66. Heading G2H. A photo-copying machine comprises a housing having a reciprocable original carrier 30 mounted at the top thereof, movement of the carrier to the left (as seen) allowing lights 221, (222, Fig. 10, not shown) to scan an opaque original line by line, the scanning beam being reflected by a stationary mirror 211 on to a moving charged copy sheet at an exposure station 100, from which station the exposed sheet passes to a developing station 110 and thence on to a collecting tray 46. With the reservoir 50 loaded with a stack of copy sheets, face down, the machine is switched on thereby starting a fan 140, drive-motors, a heater 142 and a dispenser motor 75, which later advances the top copy sheet 61 into a "ready" position 80, just short of rollers 81, 82. An original 35 is placed face down on a transparent plate 34 and held there by a rubber pad 36. A start button is then momentarily depressed causing the dispenser motor to advance the sheet 61 incrementally so that it is engaged by rollers 81, 82 and is transported through a corona unit 90 into the exposure station 100 where the leading edge closes a switch S2. This causes the lights to be turned on, the heater to be turned off, and energizes a solenoid to produce forward (to the left as shown) scanning movement of the carrier. This movement continues until the trailing end of the copy sheet clears a switch S5, whereupon the first solenoid is de-energized and a second solenoid energized to return the carrier to its original position at double the forward speed, accompanied by turning on of the heater. The copy sheet continues its movement through the developer trough which contains a liquid consisting of finely divided toner particles suspended in colloidal solution in a fluorinated hydro-carbon liquid. The toner is replenished after a predetermined total length of copy sheet has passed through the trough, a predetermined amount of toner concentrate being added to the developing liquid, which liquid is constantly recirculated through the trough by a pump. After leaving the trough the copy sheet passes between squeeze rollers and is subjected to a current of warm air before being deposited upon a collecting tray. The carrier continues its return movement until the second solenoid is de-energized by means of a switch S4 being opened. Multiple copies may be made, and the stack of single sheets may be replaced by a continuous web with an automatic cutter. The original may take the form of a page of a book, means being provided to support the book during the copying.