baber/WOPTO huggingface dataset:
Patent GB-1014391-A (GB)
Title: Improvements in arithmetic units for digital calculators and the like
Inventor: MEGGITT JOHN EDWARD
IPC: G06F7/498
Filed: 1961-09-20
Abstract: 1,014,391. Electronic calculating apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 19, 1962 [Sept. 20, 1961], No. 33721/61. Heading G4A. The Specification describes operations called pseudo - multiplication and pseudo - division. These are similar to division by repeated subtraction and multiplication by repeated addition save that the subtrahend or addend are modified as the computation proceeds. Among other examples the Specification describes the computation of log (1 + y/x). Digits q; are found by pseudo-division such that y + x x = x# (1 + 10<SP>-j</SP>)qj . . . . . (1) j = o Then log(1 + y/x) = # j  qj log(1 + 10<SP>-j</SP>) . . . (2) The process by which the RH side of (2) is evaluated is termed pseudo-multiplication. Ordinary division is defined by the equations, referring to the computation of the jth order of the quotient, qj, y n  +1  = yn - 10<SP>j</SP>x n  . . . . . . (3) x n  + 1 = x n  . . . . . . . . . . . (4) For accuracy it is usual for the dividend register to be shifted rather than the divisor registe and so, putting 10<SP>-j</SP>yn = Z n , (3) becomes Zn + 1 = z n  - x n  . . . . . (5) Then, qj is defined by Zq j  # o > Zqj + 1 Pseudo division differs from this only in the equation (4). It is shown in the Specification that the computation of the qj of (1) is defined by equations (5), (6) and X n  +  1  = X n  + 10<SP>-j</SP>x n  The apparatus used is shown in Fig. 1. There are three operand registers, A and M of one full word length, and B of one word length plus two digits. An adder 3 has as inputs A or B in true form and B or M in true or complement form. The output is connected to all three registers and an indication of carry or borrow from the highest order is given. There is an operations counter 7 and a control unit 1 of the microprogram type, which stores control words of which the individual bits each control a specific gate. The control unit also generates the address in the unit of the next control word, which address may be modified by the signal on line 8. The Specification states that the adder 3 may be in the form of a stored table. A flow sheet for the operation of the apparatus in performing ordinary division (y/x) and pseudo-division in evaluating log (1 + y/x), tan<SP>-1</SP>(y/x) and (y/x)¢ is shown in Figure 2a. The Specification describes how the inverse functions (squares, exponentials, trigonometric functions) can be calculated using a similar process and states that a combined register for operand and result data may be provided.
Patent GB-1389875-A (GB)
Title: Process for polymerizing episulphides
IPC: C08G75/08
Filed: 1972-07-19
Abstract: 1389875 Episulphide polymerisation catalysts SNAM PROGETTI SpA 19 July 1972 [31 July 1971] 33853/72 Heading B1E [Also in Division C3] Episulphide polymerisation catalyst comprises the reaction product of (i) at least one hydride of a Group IIIa element and (ii) a compound containing either (a) at least two active hydrogen atoms or (b) an active hydrogen atom and a group selected from C=O, N=O, P=O, S=O, C=S, P=S and C#N groups or (c) at least two groups selected from C=O, N=O, P=O, S=O, C=S, P=S, C#N, P-N and N=S groups or (d) at least one N=N group. The or each hydride (i) may be either an aluminium hydride having the formula A1HXY.Z wherein each of X and Y, which are the same or different, is a hydrogen atom, a halogen atom or a disubstituted aliphatic or aromatic amino group and Z, which may be absent if X and/or Y is a di-substituted amino group, is a Lewis base selected from ethers and amines or a complex hydride having the formula M(M'H 4 ) n  wherein M is a Group Ia, IIa or IIIa element, M' is boron, aluminium or gallium and n is 1, 2 or 3; specified hydrides (i) are aluminium trihydride complexed with an ether or amine, aluminium monochloride dihydride complexed with an ether or amine, aluminium dichloride monohydride complexed with an ether or amine, aluminium (dimethylamino) dihydride, aluminium piperidino dihydride, lithium borohydride, sodium borohydride, LiAlH 4 , NaAlH 4 , KAlH 4 , RbAlH 4 , CsAlH 4 , Be(AlH 4 ) 2 , Mg(AlH 4 ) 2 , Ca(AlH 4 ) 2 , Sr(AlH 4 ) 2 , Ba(AlH 4 ) 2 , boron aluminium hydride and lithium gallium hydride. The compound (ii) may be a dimercaptan, phosphoramide, sulphoxide, oxime, sulphone or a nitro- or nitroso-derivative; specified compounds (i) are 1, 6-hexane dithiol, hexamethylphosphoramide (HEMPA), dimethylsulphoxide (D M S O), diacetylmonoxime (DMO), dimethylsulphone, nitromethane and nitrobenzene. The hydride(s) (i) and compound (ii) may be reacted in the presence of solvent, for example selected from aliphatic, cycloaliphatic and aromatic hydrocarbons and linear and cyclic ethers; the reaction product may be subjected to heat treatment prior to use. As exemplified, catalyst is prepared from AlH 3  . N(CH 3 ) 3  and either HEMPA (Example 1) or DMSO (Examples 2, 12, 13 and 14) or DMO in the presence of toluene (Example 3) or HEMPA in the presence of tetrahydrofuran (Example 4) or from AlH 3  . N(CH 3 ) 3  and nitrobenzene in the presence of toluene, the reaction product being treated, after removal of the toluene, with DMSO prior to use (Example 5) or from AlH 2  N(CH 3 ) 2  and DMO in the presence of toluene, the reaction product being treated, after removal of the toluene, with DMSO prior to use (Example 6) or from AlH 2  N(CH 3 ) 2  and DMSO (Example 7) or Ca(AlH 4 ) 2  and HEMPA in the presence of tetrahydrofuran (Example 8) or LiAlH 4  and HEMPA (Example 9) or LiAlH 4  and DMSO (Example 10) or NaBH 4  and HEMPA (Example 11).
Patent GB-750260-A (GB)
Title: Printing process for planographic printing by offset or contact printing
IPC: B41C1/10
Filed: 1953-12-04
Abstract: 750,260. Printing processes; printing-surfaces. DIETZ, V. Dec. 4, 1953, No. 33864/53. Class 100 (2). [Also in Group XX] In a planographic printing process, the script image is applied to a hardenable colloid layer not more than 0.1 mm. thick on a support and already pre-hardened and containing roughening agents, by means of a substance which further hardens the colloid in a dry state under the action of light or by a reducing agent without light, and the surface is then inked and printing effected. The colloid may be gelatine prehardened by a formaldehyde. The drawing is effected by an ink ribbon or ink, directly on the layer for offset printing, or on paper and thence transferred to the layer for contact printing. Kieselguhr, starch or the like may be added to impart roughness, and glycerine to facilitate penetration of the hardening substance, which is in the ink. The further hardening is terminated by moistening. The hardening substance may be a bichromate or a diazo compound. The sensitivity of the colloid may be increased by adding copper chloride, ferric ammonium oxalate, ammonium sulphate, cobalt chloride, uranium chloride or manganese salts. Letters can be deleted by adding a strong alkaline solution such as ethylene diamine soda, or by a soft rubber. For hardening without light, chromic acid or salts may be added to the ink, and the reducing agent may be hydroxyamine hydrochloride or monomethyl-p-aminophenol sulphate. For example, the entire script image may be coated with a solution consisting of 4 gr. hydrazine hydrochloride, 20 gr. bydroquinone, 2 gr. sodium hydroxide, 50 c.c. water, and 924 c.c. alcohol. If aluminium nitrate is added to the ink, no light is necessary. For printing without moistening, Fel tauri inspissiatum may be added to the ink and the colloid, and glycerine to the ink.
Patent GB-339048-A (GB)
Abstract: 339,048. Gutehoffnungsh³tte Oberhausen Akt.-Ges. Oct. 8, 1928, [Convention date]. Hydrocarbons.-Fatty oils' are converted into hydrocarbons of low boiling point suitable for operating internal combustion engines by heating the oils to above their boiling point in the presence of hydrogen at a pressure of less than 45 atmospheres. The reaction is preferably carried out in the presence of catalysts such as copper, iron, or zinc. Soya bean oil mixed with illuminating gas containing hydrogen is passed at 500‹ C. over a contact prepared by pouring dilute sodium carbonate over iron oxide and drying and reducing the mixture. A product is obtained comprising 78 per cent of benzine-like hydrocarbons. The process may be carried out in two separate stages, the oils being first decomposed into vapours which are then mixed with hydrogen and passed over the catalysts.
Patent GB-172988-A (GB)
Title: Improvements in or relating to drying support for gloves
IPC: D06F59/04
Filed: 1921-12-19
Abstract: 172,988. Meehan, A. Dec. 17, 1920, [Convention date]. Glove-stretchers. - A form or support upon which gloves may be mounted for forming or stretching either in a wet or dry state, comprises separate expansible hand and wrist portions, preferably mounted on a common base 15. The hand portion comprises two members 17, 18 shaped respectively approximately to the shape of the palm and back of the hand and loosely connected at the wrist by two screws 29. The thumb portion 22 of the part 18 is passed through a slot 24 in the part 17, and the members 17 and 18 may be expanded by a rod 27 having an enlargement 28 and sliding in a cylindrical groove 25. The wrist portion comprises a rod 31 having stationary collars 32, 33 connected to bars 35 by links 34, 34<x> which may be expanded by a sliding sleeve 36 connected to the links 34<x> by other links 37. A cuff or cover 41 of leather or the like is provided over the bars 35 and the sleeve 36 is retained in adjusted position by a pin engaging one of a series of holes in the rod 31. Perforations 30, 43 facilitate drying. In use, the hand portion is supported in holders 16 and a glove placed in position, after which the hand is expanded by the rod 27, the end of which is then placed in position in a socket 40 of the rod 31, when the sleeve part of the glove may also be stretched.
Patent GB-779280-A (GB)
Title: Improvements in means for cushioning the pistons of fluid-pressure operated piston and cylinder assemblies
IPC: F15B15/22
Filed: 1954-11-25
Abstract: 779,280. Fluid-pressure engines. TOMKINSJOHNSON CO. Nov. 25, 1954 [Jan. 11, 1954], No. 34225/54. Classes 122 (1),122 (3) and 122 (4). [Also in Group XXIX] A fluid-pressure actuated piston 16 is cushioned and regulated during its movement by means comprising collars 20, 22 secured on the piston rod 18 for movement into bores in the cylinder heads 12 and axially slotted rings 30, 32 housed in the annular spaces 40 formed between the collars and the cylinder head bores and movable by fluid pressure between two positions to either allow pressure fluid to pass through the axial slots 44 therein to the cylinder 10 or to cause exhaust from the cylinder to pass through restriction flow passages 36, 36<SP>1</SP>, 38, 381 in the cylinder heads 12. The rings 30, 32 are slidable axially between abutment faces 42 and stop rings 34 and are formed on their ends facing the rings 34 with internal counterbores 48 and on their opposite ends with external counterbores 52. The restriction passages 36, 361 and 38, 38<SP>1</SP> are connected by intermediate passages 36<SP>11</SP>, 38<SP>11</SP> housing adjustable valve plugs 56 by which the amount of cushioning may be regulated. Ports 26, 28 in the cylinder heads are alternately connected to a source of fluid pressure and to exhaust and when, as shown in Fig. 1, pressure fluid is supplied to the port 28 the slotted ring 32 is forced by fluid pressure to seat on its associated stop ring 34 and fluid flows through the slots 44 to the cylinder space D and moves the piston to the left. The collar 20 enters the slotted ring 30 which is moved by fluid pressure to seat against its abutment face 42 and exhaust from the cylinder space C to the port 26 has to pass through restriction passages 36, 361. Similarly, when the pressure differential across the piston is reversed to return it to the right, exhaust from the space D is restricted. The collars are bevelled at 20<SP>1</SP> and 22<SP>1</SP> to facilitate entry into the slotted rings 30 and 32.
Patent GB-810993-A (GB)
Title: Exhaust silencers for internal combustion engines
IPC: F01N1/08
Filed: 1956-11-09
Abstract: 810,993. Exhaust-silencers. VILLIERS ENGINEERING CO. Ltd, and HARRIS, R. W. Nov. 6, 1957 [Nov. 9, 1956], No. 34231/56. Class 7(2) Diametrally opposed holes 24 spanning partitions 17 in a tube 11 connect the successive tube sections via chambers 13 defined between tubes 11, 10 by rings 12. The tube 10 is in two pressed or stamped sections welded together along flanges 28 and forms a gas inlet chamber 29. The rings 12 are coned as shonw or otherwise inclined and are welded to the tube 10. The tube 11 is made from a blank by rolling up and butt welding, each partition 17 being spot welded therein after a notch in one of its two flanges 27 has been located with a pressed-out tab 27. The tube 11 is removable for cleaning, having tongues 31 some or all of which are sprung out to engage the first ring 12, and passes with clearance through the other rings 12, its tail end being expanded to form a sliding fit in the tube 10 and being secured thereto by a removable pin 33.
Patent GB-1154086-A (GB)
Title: Automatic Firearm.
IPC: F41A25/18
Filed: 1966-07-29
Abstract: 1,154,086. Automatic firearms. OERLIKONBUHRLE HOLDING A.G. 29 July, 1966 [29 July, 1965], No. 34291/66. Heading F3C. An automatic firearm has a breech casing 15 mounted for recoil on a support or cradle 10, a damping device being interposed therebetween. The damping device which cushions the run forward of the breech casing to a rest position, includes a piston and cylinder hydraulic damping assembly, the cylinder 17 being connected to the breech casing 15 and the piston rod to the cradle 10 through a buffer spring 27 in series with the hydraulic damping assembly. The buffer spring 26 acts to absorb the shock produced when the breech block strikes the breech casing on the breech block arriving at the firing position. A recuperator spring 19 is provided between the cylinder 17 and the cradle, this spring being weaker then the buffer spring 27. The hydraulic damping is controlled by an adjustable needle valve 32 and spring loaded one-way valves 34. Fluid also passes round the periphery of the piston. In a modification the piston rod is firmly connected to the cradle, the cylinder being floatingly mounted within a ring attached to the breech casing. The buffer spring and the recuperator spring abut one on each side of the ring and at their other ends abut members attached to the cylinder.
Patent GB-1014917-A (GB)
Title: Preparation of 5,5-dimethyl-4-iminohydantoin and its use as sweetening agent
IPC: C07D233/88
Filed: 1964-08-21
Abstract: 5,5 - Dimethyl - 4 - iminohydantoin is prepared by cyclization of a -ureidoisobutyronitrile in a basic solution in an inert substantially neutral solvent, suitably at 20-250 DEG  C.  The starting material may be prepared from a -aminosiobutyronitrile and cyanic acid (or metal cyanate and an acid), or from acetone cyanohydrin and urea. The hydantoin product is a sweetening agent, e.g. for foods and drinks (see Division A2), medicinal and cosmetic preparations (see Division A5) and for gums for stamps, envelopes and labels.ALSO:5,5-Dimethyl-4-iminohydautoin (see Division C2) is a sweetening agent suitable for medicinal and cosmetic preparations, such as cough syrups, eliscirs, pills, tablets or coatings therefore, and dental preparations such as toothpastes, powders, mouth washes, denture cleaners and denture adhesives.  The sweetening agent may be added with a carrier, such as water, glycerol, starch, sorbitol, salt, sugar, citric acid or a vegetable oil.
Patent GB-1372436-A (GB)
Title: Dispenser systems
IPC: G01N35/00
Filed: 1972-07-21
Abstract: 1372436 Sampling liquids INSTRUMENTATION LABORATORY Inc 21 July 1972 [22 July 1971] 34318/72 Heading B8N [Also in Divisions G1 F1 and G3] In preparing a sample for photometry, a precise amount of liquid is dispensed by a pipette 14, controlled by a card reader 20 to draw in a given precise amount of liquid by raising a plunger 76 from a datum position to a first position and then by a manually operable switch 16 to lower the plunger to a second position beyond the datum position to dispense the liquid, the last drops being freed by a blower which is automatically started when the plunger reaches the second position, the plunger then returning automatically to its datum position. Two similar pipettes are provided. Each has a reversible electric motor 56 coupled via a rack and pinion to raise and lower the plunger 76 under the control of a control circuit (Division G3). The plunger has a waisted region 78 which in the lowermost travel limit allows air from a blower (not shown) connected to conduit 138 to pass a sealing ring 144 for freeing the last drops of liquid. A sample holder is detachably fitted over ring 88 and has an inverted conical shape with a hole at its bottom (46, Fig. 2, not shown). If the plunger should be raised to a certain upper travel limit, the plunger is automatically driven downwards, the blower activated, and the plunger returned to its datum position. A choice of four given precise volumes is available: 25, 50, 100 and 200 Ál.
Patent GB-823484-A (GB)
Title: Water-base rust preventive and lubricant
IPC: C23F11/10
Filed: 1957-11-04
Abstract: A rust preventive and/or lubricating concentrate comprises 30 to 50 wt. per cent of a mixture of sodium and barium soap of oxidized petrolatum and 10 to 25 wt. per cent of an oil-soluble mono- or di-alkyl phosphate, or mixtures of the two, the alkyl radicals therein containing a total of 3 to 40 carbon atoms; the remainder of the concentrate being oil.  The preferred descriptions and/or concentrations of the constituents are as follows: the ratio of sodium to barium is 0.5 to 20.0 parts by weight; the soap has an acid number of 4 to 20 mg. KOH/g. of soap and a saponification number of 10 to 60 mg. KOH/g. of soap; the soap is prepared from an oxidized petrolatum having a saponification number of about 60 to 110 and an acid number of about 20 to 50; the alkyl phosphate is the product of reacting 3 to 5 molecular proportions of C3-C20 alkanol with one molecular proportion of phosphorus pentoxide (P2O5); the oil is a non-volatile animal, vegetable, mineral or synthetic oil.  This concentrate is utilized by addition of water to form a composition comprising a major proportion of water, preferably 60 to 99 wt. per cent of water and 1 to 40 wt. per cent of concentrate.  In an example an emulsion contains 88 wt. per cent of water and 12% concentrate; the latter comprises 5 parts by weight of a mixed sodium/barium soap of oxidized petrolatum, said soap having a sodium: barium ratio of 3.8 : 1 by weight, and having an acid number of 12.1, a saponification number of 31.4 and having been prepared from an oxidized petrolatum which has an acid number of 28 and a saponification number of 93; the concentrate comprises also 2 parts by weight of a mixture of mono- and di-C8-oxo phosphate from reaction of 1 mol. P2O5 and 4 mols. C8 oxo alcohol, and 5 parts by weight of a mineral oil, specifically a naphthenic coastal distillate, viscosity 105 S.U.S. at 100 DEG  F. or 39 S.U.S. at 210 DEG  F.
Patent GB-363091-A (GB)
Title: Improvements in valves suitable for air containers such as a pneumatic tyre
IPC: B60C29/00
Filed: 1930-11-15
Abstract: 363,091. Inflating-valves. MICHELIN ET CIE, Clermont-Ferrand, Puy-de-Dome,. France. Nov. 15, 1930, No. 34444. Convention date, Feb. 4. Addition to 363,002. [Class 135.] An inflating-valve of the kind described in the parent Specification in which an inner stop valve is screwed in the valve casing by a rotatable member housing a non-return valve has the rotatable member 6 extended bv a flexible tube c to which is attached a separate casing b housing the non-return valve 10, 12. The member 6 and the casing b may have ridged nipples e on which'the tube is secured by ferrules f. The casing b may be rotatably secured in a lug i on the wheel rim by means of a screwed ferrule g.
Patent GB-1217305-A (GB)
Title: Method for the manufacture of ball joints
IPC: F16C11/06
Filed: 1969-07-08
Abstract: 1,217,305. Making ball joints. NIPPON THOMPSON CO. Ltd. 8 July, 1969 [9 July, 1968], No. 34456/69. Heading B3A. [Also in Division E2] A method for the manufacture of ball joints comprises the steps of preparing a mould a for forming an outer rod 1 of a ball joint, positioning a steel ball 4, having a film A of tin, copper or lead or mixtures thereof over at least part of its surface, in the mould a so that it rests as a core in the mould, casting a charge of molten aluminium into the mould to form the outer rod 1, having a part-spherical head 5 holding the steel ball therein and having a cast aluminium alloy B of high performance as a plain bearing formed around the internal surface of the head 5 through the interaction of the film with the molten aluminium, removing the rod 1 with the steel ball 4 from the mould a, joining an inner rod 8 of the ball joint to the exposed surface of the steel ball by friction welding and swaging the head 5 from the exterior to provide a clearance 12 between the inner surface of the head 5 and the surface of the steel ball so that the steel ball having the inner rod 8 joined thereto can rotate within the head 5. In another embodiment the inner rod 8 is joined by friction welding to the steel ball 4 prior to positioning the ball in the mould.
Patent GB-1017245-A (GB)
Title: Improvements in and relating to electrical sockets
Inventor: CLEWES ANTHONY BRASHER
IPC: H01R29/00
Filed: 1963-09-02
Abstract: 1,017,245. Two-part couplings. CARR FASTENER CO. Ltd. June 23, 1964 [Sept. 2, 1963], No. 34626/63. Addition to 912,545. Heading H2E. In a socket connector as described in the parent Specification in which grooves are cut into the sides 3, 4 of the body 1 with one of the grooves 5 intersecting the plug-receiving bore 2, the resilient contact 7, 8 is retained by one of its arms 8 being bent at 12 substantially at rightangles to the groove containing it, and/or is formed integrally at one end with a bight portion 9 which is bent at right-angles to the arms 7, 8 and serves as a wiring terminal. On insertion of a plug, the arm 7 is moved away from a fixed contact 11.
Patent GB-467202-A (GB)
Title: Manufacture of rubber articles
IPC: C08J5/12
Filed: 1935-12-13
Abstract: Compound unvulcanized natural rubber is attached to compounded unvulcanized halogen substituted butadiene polymers, by inserting a layer of an accelerator for natural rubber between them, and vulcanizing.  Accelerators containing both nitrogen and sulphur, e.g. mercaptoarylene - thiazoles, dithiocarbamates, thiuram disulphides, and 2 : 4-dinitrophenyl benzthiazyl sulphide may be used; they are applied either alone or in a carrier, e.g. petroleum jelly, compounded natural rubber, benzene, or a benzene solution of a chloroprene polymer.  The composite rubber may be used for printing-rollers and tyres.  Specifications 387,363 and 442,559 are referred to.
Patent GB-1080755-A (GB)
Title: Improved peg
IPC: A47K10/12
Filed: 1964-08-25
Abstract: 1,080,755. Clips. PERFLEX PTY. Ltd. Aug. 25, 1964 [Aug. 29, 1963], No. 34808/64. Heading E2B. A peg has a top portion 10 extending downwards in the form of two spaced arms 13 which define a guideway 16 for the peg to receive a clothes line 17 or like support and any article positioned thereon, the guideway extending upwards towards the top portion into an aperture 12 defined by the spaced arms so that the uppermost portions of the guideway are defined by two fingers 14 extending into the said aperture and terminating therein. The peg is preferably a unitary moulding of polypropylene or polyethylene. The fingers 14 curve in towards each other at their upper ends but do not touch as do the arms 13. When the peg is applied to a wire 21 it is gripped by the upper ends and the wall of the recess 12. The peg is made up of a planer portion 18, all the edges of which have upstanding webs 19 which reinforce the peg as well as making it easier to handle.