baber/WOPTO huggingface dataset:
Patent GB-600844-A (GB)
Title: Improvements in or relating to hypodermic syringes and parts thereof
IPC: A61M5/24
Filed: 1945-07-31
Abstract: 600,844. Hypodermic syringes. LOCKHART, M. L. July 31, 1945, No. 19609. [Class 81(ii)] A hypodermic syringe (Fig. 1) comprises a tubular member 26 with extending arms terminating in members 32 adapted resiliently to grip and partly to surround a shank 36 on a double ended needle 22. Axial movement of the latter is prevented by the engagement of the needle head 40 in notches 38 formed in thrust members 42 projecting backwardly from the finger members 32. The inner end of the needle projects beyond the inner ends of the thrust members which are flattened to engage a stopper in a double ended ampoule 24, so that when this is pressed forward, the stopper is just punctured and thereupon forced along the bore of the ampoule. Members 42 are graduated. Each stopper 44, Fig. 6, of rubber, &c., is provided with annular grooves, and its end membrane is formed with a thick central portion 60 through which the needle passes, and may be provided with a removable, protective, adhesive disc 54. Concave faces 53 are formed in the ampoule partition 52 to contain any air bubbles present.
Patent GB-1512801-A (GB)
Title: Nitrodiphenylamine monoazo dyes
IPC: C09B51/00
Filed: 1975-05-09
Abstract: 1512801 Nitrodiphenylamine monoazo dyes IMPERIAL CHEMICAL INDUSTRIES Ltd 23 April 1976 [9 May 1975] 19610/75 Heading C4P Novel water-soluble monoazo dyes have, in the free acid form, the formula wherein R' is H, halogen, hydroxyl, alkyl, alkoxy or acylamino, R<SP>2</SP> is H, halogen, alkyl, alkoxy,cycloalkyl or aryl, R<SP>3</SP> is H or alkyl; and R<SP>4</SP> is acyl, arylsulphonyl, alkoxycarbonyl or cycloalkoxycarbonyl, the -OR<SP>4</SP> group being in the 2- or 4- position relative to the azo group. The dyes are prepared by converting the -OH group to -OR<SP>4</SP> using a suitable agent e.g. acetic anhydride, cyclohexylchloroformate, p-toluene sulphonyl chloride or benzoyl chloride. They may also be prepared by condensing a halogenonitrobenzene with the appropriate amino azo compound. They are used for applying to synthetic polyamide textile materials e.g. nylons.
Patent GB-225593-A (GB)
Title: Improvements relating to the preparation of titanium hydroxide
IPC: C01G23/053
Filed: 1923-07-31
Abstract: The hydrolysis of solutions of titanium sulphate for the production of titanium hydroxide is effected by adding a titanium solution to another of different concentration or to water and allowing diffusion to take place for several minutes before complete mixing is effected. In an example a paste of titanium sulphate crystals is introduced into twice its volume of boiling water and is maintained at boiling temperature, the mixing being effected after three to five minutes. The hydrolysis is effected in about half-an-hour.  In another example a strong solution of titanium sulphate is introduced little by little into half its volume of boiling water and afterwards stirred, the temperature being maintained near the boiling point.  The hydrolysis is effected in about an hour.  The process may be effected in presence of other substances which it is required to incorporate with the titanium hydroxide for the production of pigments, and such substances may be prepared separately or in the apparatus in which the hydrolysis is effected.  The substances mentioned are barium sulphate, calcium sulphate, and silica.
Patent GB-663324-A (GB)
Title: Improvements in mining machines of the trepanning chain-cutter jib type
IPC: E21C27/04
Filed: 1949-06-26
Abstract: 663,324. Endless-chain coal-mining machines. ANDERSON, A., and ANDERSON, BOYES, & CO., Ltd. June 30, 1950. [June 26, 1949] No. 19614/49. Class 68 (i). The trepanning jib 10 of a mining-machine has tracks for two implement-carrying chains 11, 12 that circulate in spaced parallel upright planes extending laterally and normally to the line of travel of the machine, said chains being convertible to function alternately, depending on the direction of travel of the machine, as a chain cutter 13 and as a loader conveyer 14. The chain which has been converted for loading purposes is equipped with wedge and impact members 15 to break down the mass of mineral emerging from the aperture of the jib. The chains may be interconnected by cross bars and an endless chain cutter can be provided in the upper part of the jib at right angles to the plane of the jib for cutting away the roof.
Patent GB-837282-A (GB)
Title: Improvements in and relating to writing tips for ball point pens
IPC: B43K1/08
Filed: 1956-06-25
Abstract: 837,282. Reservoir pens. HENRIKSEN, E. J. J. April 30, 1957 [June 25, 1956], No. 19621/56. Class 146(3) A method of making a writing tip element 1 for a ballpoint pen having a writing ball 3 mounted to be rotatable between a part-spherical side seat formed in the side wall of a bore 12 in the front end of the tip and a part-spherical bottom seat 23<SP>1</SP> formed in the upper end of a separate insert 2 which rests against a shoulder 15 in the bore 12, the insert 2 having ink feed conduits 22 extending from a central bore 21 therein to the periphery of the bottom seat 23<SP>1</SP>, is characterized in that the formation of the part-spherical side and bottom seat is completed after the ink feed conduits 22 have been formed in the insert 2 and after the insert has been placed in the bore 12. The insert 2 is placed in the bore 12, Fig. 1, the writing ball is then placed in the bore and pressed by a punch to expand the insert and form the seating 23<SP>1</SP>, Fig. 5, and the lip 13, 14 of the tip is then pressed into contact with the ball by spinning tools. If desired, the top end of the insert 2 may have a partlyformed seating surface before insertion in the bore 12. The insert may be made of the same material as the tip, but it may be made of an alloy of silver and copper or of nickel, silver, According to the Provisional Specification the tip casing 1 may be made of brass.
Patent GB-1490689-A (GB)
Title: Rotors for rotary fluid machines
IPC: F02B55/02
Filed: 1976-05-13
Abstract: 1490689 Rotary positive-displacement fluidmachines CATERPILLAR TRACTOR CO 13 May 1976 [26 Sept 1975] 19676/76 Heading F1F In a rotor 24 for a machine that may be an I.C. engine of the Wankel type (as shown), a compressor or a pump, each radial seal 30 is biased outwardly by the pressure of a fluid e.g. the working fluid, transmitted to a chamber 34 defined by a resilient ring 32 and the sides of the seal groove 28. The ring may be made of an elastomeric material or from thin-walled steel tubing. The working-fluid pressure may be transmitted through conduits 36, 40 and a non-return valve 38 communicating with a reservoir 44 for the fluid. To cool the seal the chamber 34 may be pressurized with oil flowing therethrough, Figs. 3 and 4 (not shown). A slotted bar may separate the seal from the ring to minimize transfer of heat from the seal to the ring, Fig. 5 (not shown). Shims may be used to prevent the axially outer portions of the ring chafing, Fig. 6 (not shown). The invention is said to be also applicable to side or peripheral seals of a rotor for a machine that may be other than of the Wankel type, such as one in which the rotor nutates.
Patent GB-854591-A (GB)
Title: Improvements in or relating to electric power supply units including rectifiers
Inventor: TIBBS CHRISTOPHER EVAN MUNDELL
IPC: H02M7/10
Filed: 1956-06-26
Abstract: 854,591. Rectifying. RADIO HEATERS Ltd. March 1, 1957 [June 26, 1956; July 20, 1956; July 31, 1956; Nov. 28, 1956], Nos. 19779/56 22578/56, 23624/56 and 36406/56. Class 38 (2). A power unit supplying high tension to the valve of an oscillator supplying high-frequency heating, medical diathermy or ultrasonic generating equipment comprises a voltage multiplying circuit incorporating electrolytic capacitors. Fig. 1 shows a three-phase supply feeding a resistor 28 representing the load, the terminals of which are respectively connected to two of the supply lines 12, 22 through oppositely directed pairs of vacuum deposited selenium rectifiers 14, 24 and 16, 26. The third line is connected to the load terminals through series-parallel arrangements of electrolytic capacitors 34, 36. By providing a number of relatively small capacitors, their life is increased and a single failure indicated by the blowing of a fuse 32 does not interrupt the supply. The input and output circuits are simultaneously switched by contacts 10a, 10b, 10c, 10d so that the rectifiers are never subjected to the high output voltage. In one modification in which semi-conductor contact rectifiers are used in a voltage doubler circuit energized from a single-phase supply, the rectifiers are protected from surges by the connection of a resistor in a supply line until the capacitors are charged (Fig. 2, not shown). In a further modification the surge-limiting resistor in the supply to a voltage quadrupler is short-circuited by contacts operated by current through neon tubes connected across a capacitor (Fig. 3, not shown).
Patent GB-596732-A (GB)
Title: Improvements in or relating to a new and improved method of producing electroforms
IPC: B41C3/08
Filed: 1945-08-01
Abstract: 596,732. Electrotype. PRINTING & ALLIED TRADES RESEARCH ASSOCIATION, BANKS, W. H., and UPTON, P. B. Aug. 1, 1945, No. 19796. [Class 100 (ii)] [Also in Group XXXVI] Material, such as a wax or plastic mould for producing electro-type plates, having a surface not readily wetted by aqueous solutions, is subjected to treatment by a wetting agent and a solution of a metallic salt in order to enable a layer of conducting material such as silver to be subsequently deposited by chemical means, so as to form a basis for the electrodeposition of metal. The wetting agent is preferably the sodium salt of an alkylated naphthalene sulphonate. The wetting agent is preferably added to the salt solution, which may be acidified with hydrochloric acid. The salt may be stannous chloride or a salt of another metal such as iron, aluminium, chromium, or zinc. After the " wetting " process, the surface is washed, treated with a solution of silver nitrate containing one or more colloidal agents such as gelatin, then immediately, without washing, with a reducing agent the choice of which is governed by the rate of reduction required, washed, and finally treated in an electrolytic depositing bath. The reducing agent may be an aqueous solution containing 0.8 per cent. pyrogallol. Treatment with the silver solution and the reducing agent may be repeated.
Patent GB-286589-A (GB)
Title: New or improved means for propelling and steering water craft
IPC: B63H1/36
Filed: 1927-07-26
Abstract: 286,589. Michiels, E. J. D. March 5, 1927, [Convention date]. Vibrating plates or fins.-In vibrating plate propellers, two plates are pivotally carried by an oscillatorv arm and have their axes in the same vertical plane radiating in opposite directions and slightly inclined to one another, and have springs or the like tending to maintain them in normal position. A steel sleeve 1 is mounted by a slipper 3 on the stern of a boat and contains a shaft 7 having at its upper end a handle 9 and at its lower end a double arm supporting a boss 11. The plates 14, 15 are pivotally mounted on inclined axes 12, 13 and are coupled by a spring 16.
Patent GB-675912-A (GB)
Title: Improvements in or relating to organo-silicon resins and the baking of bread
IPC: A21D8/08
Filed: 1950-08-09
Abstract: Organopolysilane-polysiloxane resins of the average formula [(CH3)a(C6H5)bSiOc] are made (1) by reacting one or more chlorosilanes of the general formula (CH3)a(C6H5)bSiCl4-a-b, in which a+b is from 1.4 to 2 and in which between 30 and 75 per cent of the total organic radicals are phenyl radicals, with water in amount, taken in conjunction with that produced by simultaneous condensation of the hydrolysis product being formed, sufficient to cause hydrolysis of up to 80 per cent, the chlorine present in the silane(s), and reacting an alkali metal with the oxychloride so formed, which has the general formula (CH3)h(C6H5)bSiOcCln, in which c has a positive value, a+b+2c has a value up to 3.5 and a+b+2c+n has a value of 4; (2) by partially hydrolysing one or more silanes of the formula RnSiCl4-n, in which each R is a methyl or phenyl radical and n has a value of 1 to 3, and mixing the partially hydrolysed and condensed product with an additional amount of silane(s) of the above general formula but so selected as to give an oxychloride of the general formula given in (1) above, and reacting the oxychloride with an alkai metal; or (3) by reacting an alkali metal with an oxychloride of the above general formula.  Alkali metals specified are sodium, potassium, caesium, rubidium, lithium and a sodium-potassium eutectic.  The reaction with the alkali metal is effected in liquid phase. Solvents for the resins are benzene, toluene, xylene, naphtha and acrylic petroleum thinners.  The resins may be blended with each other, with polysilanes, polysiloxanes, silicone alkyds, with natural resins, e.g. wood rosin, copal and shellac, with other synthetic resins, e.g. phenol-aldehyde, ureaaldehyde, alkyd, cumar, and vinyl resins, and esters of acrylic and methacrylic acid, with cellulose esters, e.g. cellulose-nitrate-, -acetate, and -p-toluene sulphonate, and with cellulose ethers, e.g. methyl-, ethyl-, propyl-, butyl-, benzyl-, allyl- and hydroxy ethyl-cellulose.  The resins or their solutions, with or without pigments, e.g. Al powder, and setting catalysts, e.g. lead, zinc, cobalt and manganese salts, find use in coating ovens, smoke stacks and exhaust manifolds, for electrical insulation and the production of magnet wire enamels and as mould release agents in the baking of bread.  Methods of preparing the resins are exemplified. Specification 675,057 is referred to.
Patent GB-147808-A (GB)
Title: Improvements in and relating to electric motors
IPC: H02K27/28
Filed: 1920-07-09
Abstract: 147,808. British Thomson - Houston Co., (Assignees of Altes, W. C. Korthals-). Feb. 14, 1918. [Convention date]. Alternating-current motors; windings. - In alternating-current commutator motors the rotor is provided with a primary winding P and a regulating-winding R in conducting connexion with the stationary secondary winding S through a commutator and brushes, the windings P, R forming a mechanically single two-layer balanced winding in the rotor slots. To secure such a winding, the coils must span an odd number of slots and, to keep the primary winding regular in respect to phases, the total number of slots should be even and divisible by twice the number of phases, and the number of slots per pole should be divisible by the number of phases to secure a balanced winding. In an example, the regulating-winding shown by full lines in Figs. 2 and 3, is connected to commutator bars 11, and the primary winding shown in broken lines has star connexions, 13 being the neutral points and leads 14, 15, 16 leading to the collecting-rings. Examples are also given of modifications in the above conditions.
Patent GB-357989-A (GB)
Title: Method of laying pavement
IPC: E01C19/22
Filed: 1930-06-30
Abstract: 357,989. Making concrete paving. MACKENZIE, L. R., 541, 44th Street, Des Moines, Iowa, U.S.A. June 30, 1930, No. 19881. [Class 107.] A method of making concrete pavements consists in spreading a layer of rock aggregate over an under layer of plastic concrete and subjecting the whole to pressure and a series of downward impacts by means of a travelling vibrator, the vibrations of which are substantially free from horizontal components. In the construction shown, the concrete 10 is spread upon a prepared base or sub-grade and has cast thereon a layer 12 of loose rock aggregate the size of which ranges between one and three inches. Upon the layer 12 are placed a plurality of platforms 14, each platform being formed of longitudinal slats 14a and cross slats 14b. These slats are all of the same width and are spaced equidistantly from one another. A vibrating machine is then moved over the platforms until the layer 12 is firmly embedded in the concrete and the surplus air and water forced upwardly from the latter. The layer 12 may comprise gravel, pebbles, steel slag, crushed rock, or like materials. The vibrating machine comprises a wheeled frame 16 having handles 28 and carrying an internal-combustion engine 20. The engine is provided with an overweighted piston which, when the engine is running, imparts to the frame 16 a series of vibrations which are substantially free from horizontal components.
Patent GB-1070801-A (GB)
Title: Control for an object handling system
IPC: B65G47/49
Filed: 1964-05-13
Abstract: 1,070,801. Route setting. GENERAL ELECTRIC CO. May 13, 1964 [May 21, 1963], No. 19987/64. Heading B7N. [Also in Division G4] Objects moving along a predetermined path, e.g. in a conveyer system, are routed in accordance with electrical object-identification signals obtained from devices located along the path. In the particular embodiment, a conveyer system utilizing an under-the-floor drag line for freight carts comprises two conveyer loops with one conveyer transfer section in each direction between them. Each loop has four sets of fourteen spurs. A photo-electric reader for reading destination code groups on approaching carts is located prior to each set and each transfer section. The code goups read are stored and then time-division-multiplexed by gating pulses to a decoder which energizes one of 314 wires in response to each group. 311 of the wires are connectable via a plugboard to eight encoders (one per set of spurs) each having fourteen inputs (one per supr). The encoder outputs (binary coded) are gated by pulses corresponding in time to the gating pulses which performed the time-divisionmultiplexing, to ensure that only those encoder outputs are effective which derive from the code reader immediately preceding the set of spurs corresponding to the encoder in question. Encoder outputs not removed by the gates go to the first stages of corresponding shift registers, each having 14 stages. As the carts move through the sets of spurs, the contents of the shift registers are shifted along, the contents of each stage being continually compared with stored codes to determine if they indicate that the cart is destined for the spur corresponding to the stage. If it does, the cart is diverted into the spur, unless the latter is already full. The remaining three of the 314 wires from the decoder are energized when the cart is to circulate indefinitely around one of the loops or both alternately, and go to gating circuitry also supplied with pulses corresponding in time to the gating pulses which relate to the code reader preceding the transfer sections in the time-division-multiplexing, the gating circuitry controlling devices to divert carts on to the transfer sections. This gating circuitry also receives pulses from the encoders to ensure that carts destined for spurs on the other loop are diverted to it.
Patent GB-421489-A (GB)
Title: Process for the production of electrical heating bodies
IPC: H05B3/44
Filed: 1933-07-14
Abstract: Electric heating resistances are made from an alloy containing 50 per cent tungsten and 50 per cent molybdenum.
Patent GB-278142-A (GB)
Title: Improvements in golf clubs
IPC: A63B53/02
Filed: 1926-08-16
Abstract: 278,142. Hadden, W. J., and Donaldson Manufacturing Co., Ltd. Aug. 16, 1926. Golf clubs.-A golf club is built up of readilyassembled parts comprising a hollow steel shaft, a tubular grip adapted to be clamped in position, on one end of the shaft, and a club head with a socket provided with circumferentially contractible means for clamping the socket on the shaft. As shown applied to a golf club with an iron head 1, a hollow steel shaft 2 is filled at the end by a plug 10 secured by rivets 11 and provided with a projecting screwed portion 12. The socket 4 is slotted longitudinally so that after screwing in the shaft, the socket may be clamped thereon by a screwed ferrule 13. A similar attachment may be applied to wooden heads. A tubular grip 20 covered by leather 21 is applied to the upper end of the shaft. As described in Specification 277,473, the lower end of the tubular grip is split longitudinally and may be clamped to the shaft by a screwed ferrule 23. The upper end of the grip carried a milled head 26 from which a screw 27 projects and passes through a screwed filling plug 24 secured within the upper end of the shaft. By rotating the milled head the position of the grip upon the shaft may be adjusted, and after tightening up the ferrule 23 further rotation of the milled head tightens the screw and prevents further longitudinal movement. Rotation of the grip upon the shaft is prevented by longitudinal grooves in the grip and shaft. By standardizing the parts clubs may readily be built up to suit the individual player.
Patent GB-1418898-A (GB)
Title: Pulley drive systems lamp cap construction
IPC: D06F37/36
Filed: 1972-05-01
Abstract: 1418898 Expanding pulley gear; centrifugal clutches HOOVER Ltd 27 April 1973 [1 May 1972] 20170/72 Headings F2C and F2D A pulley drive system comprises a driven pulley assembly consisting of a part 21 fixed to a shaft 15, a part 22 rotatable and axially movable on the shaft and having a belt-receiving portion 37, and a centrifugal mechanism operative when the part 22 reaches a predetermined speed to move the part 22 axially to bring the belt 9 into contact with the part 21 to drive it. The system is described applied to a washing machine in which, when a motor 1 is accelerated for spindrying, the drive to a pump 13 is taken up when the motor reaches a predetermined speed and the pump is thereafter driven at a speed that increases at a lesser rate than that of the motor. The drive pulley comprises a part 4 fixed to the motor shaft 3 and a spring-loaded part 6 which may be free on the shaft or splined thereto. The centrigugal mechanism of the driven pulley consists of balls 20 accommodated in inclined radial grooves 24 and bearing against inclined parts 34 of a retaining member so that as the part 22 is driven at increasing speed it is moved leftwardly by the balls against loading springs 31. The beltreceiving portion 37 may have splines to engage splines in a recess 38 in the part 21. The pulley assembly 21, 22 may be mounted on a stub shaft and the final drive applied by another belt mounted on the part 21. In this case the part 21 need not be fixed to the shaft.