baber/WOPTO huggingface dataset:
Patent GB-350208-A (GB)
Title: An improved apparatus for projecting light
IPC: F21S8/00
Filed: 1930-03-21
Abstract: 350,208. Mounting illuminants in lanterns. GIBBONS, A. O., 100, Norroy Road, Putney, London. May 21, 1930, No. 15675. [Class 75 (iv).] In a stage light ing or other pro. jector, the illuminant is mountec upon a sliding base or tray which is connected to one or more counter. balance weights sc that, as the illuminant is moved in one direction within the outer casing, the weights move in the opposite direction. In the form shown, an electric arc lamp is mounted upon a base 4 provided on each side with a vertical post 5 carrying a horizontal pin 6 which engages the lower slotted end of a lever 7 pivoted at or slightly below its centre to the side of the casing. The upper slotted end of the lever engages a pin 9 carrying a weight 10 and fitted at one end with a grooved roller 11 running within guide rails 12 carried by the sides of the casing. The guide rails may be dispensed with by rigidly fixing the weights to the levers, and antifriction devices may be employed between the moving parts. In modifications, the lamp base and balance weights are connected to different portions of endless chains or a lazy tongs device.
Patent GB-894239-A (GB)
Title: Improvements in and relating to polymerisation
Inventor: WILLARD PAUL EDWIN
IPC: C08F36/20
Filed: 1960-05-04
Abstract: A method of producing a dry, free flowing, fusible polymer of a polyallylic ester of a polycarboxylic acid containing residual unsaturation and capable of further polymerization to a thermoset resin comprises polymerizing the polyallylic ester monomer to form a fusible polymer and stopping the polymerization before gelation occurs, the polymer being in solution in the monomer or in the monomer and a diluent, passing the solution of polymer into a shearing zone, said shearing zone acting on a small cross-sectional area of the solution, subjecting the solution to high shearing stresses in the shearing zone, simultaneously passing into the shearing zone at least two volumes per volume of the solution of an unreactive liquid precipitant which is a solvent for the monomer and a nonsolvent for the polymer, thus precipitating the polymer while in the shearing zone and simultaneously dissolving the monomer in the liquid precipitant, passing the mixture of precipitated polymer and solution of monomer out of the shearing zone, separating the polymer from the monomer solution and washing and drying the polymer.  The polymerization may be initiated by air, heat, light or basic or acid catalysts or a peroxide catalyst such as hydrogen peroxide or t-butyl perbenzoate and the diluent may be isopropanol or methanol.  The monomer may be the allyl or methallyl esters of ortho-, iso- or terephthalic acid or of various bicyclo (2, 2, 1)-heptene-dicarboxylic acids or of tetrahydrophthalic, hexahydrophthalic, cyanuric, isocyanuric or maleic acid and the prepolymer may be derived from more than one of these or mixtures of these with other monomers, e.g. in Example 2 a copolymer of diallyl phthalate and triallyl cyanurate is made.  The interruption of the polymerization may be effected by lowering the temperature or adding an inhibitor and the degree of conversion may be 25 to 40%.  The precipitant may be a lower aliphatic alcohol, e.g. methanol or isopropanol.  The prepolymer may be cured to an infusible state in the presence of peroxide catalysts.
Patent GB-131196-A (GB)
Title: Method and Means for Producing Improved Twist-drills, Reamers, and other Boring and Cutting or Finishing Tools.
Inventor: BRUNDRETT HARRY
IPC: B23C3/32
Filed: 1918-09-27
Abstract: 131,196. Brundrett, H. Sept. 27, 1918. Milling helical surfaces; drills; reamers; chucks.-Twist drills, reamers, and the like having grooves of increasing pitch towards the base are cut with the area of the groove the same throughout but with an increasing sectional area of metal from the point to the shank, by the use of a master drill with an increasing pitch toward the shank end. The drill blank e<5> is carried by a split chuck e<4> secured to one end of the master drill a which is secured at its other end to a spindle on which is mounted, loosely, a screwed sleeve g between ball bearings on the spindle. A sliding bearing g<3> receives one end of the screwed sleeve which is adapted to be rotated by a worm wheel g<2> and a pivoted worm h<2>, Fig. 11. Axial and rotational motion is given to the master drill bv the screwed sleeve and bushes h<1> and by spring-controlled balls d in a fixed adjustable support e<3> respectively. The spiral grooves may be made of uniform depth or of gradually decreasing depth, and for this purpose the cutter spindle i<1> is mounted in a bearing pivoted at j, Fig. 14, an offset j<1> of the bearing holding a micrometer screw k, Fig. 20, which abuts against a lever m carrying a spring pawl m' operated by a sliding bar n which controls the position of the tool with respect to the blank. The bar n has also a recess o which allows complete withdrawal of the tool from the work by means of springs on completion of the cutting and on reverse movement of the bar the pawl is tilted backwards against a spring m<3> until it enters a recess o<1> in the bar and resumes its active position against a stop on the lever m. The slide bar n is actuated through levers from the sliding bearing g<3> on the feeding sleeve g. The toolholder may be slidable instead of pivoted and the bar a may be replaced by a cam. If two grooves are to be cut, the master drill is indexed before the advance of the drill commences. In order to get uniform or an increasing area of groove as the depth of cut is decreased means are provided to present the blank to the cutter at various angles for this purpose the main slide bar c is pivoted at q and lateral motion is given to the blank in respect to the cutter by an adjustable wedge plate r<2> engaging a projection t on the sliding bearing g<3>, the projection being held up to the plate by a cord and weight r. The operations may be performed successively in three machines instead of in one.
Patent GB-137750-A (GB)
Title: A process for defecation of sugar solutions
IPC: C13B20/04
Filed: 1919-06-23
Abstract: 137,750. Marks, E. C. R., (Industrial Apparatus Corporation). June 23, 1919. Purifying saccharine liquids.- Sugar solutions are purified by being treated with defecants, such as lime, sulphurous acid, and phosphoric acid, the resulting precipitates being removed by impregnating the solution with air or gas and heating, when the precipitates are carried to the top by the liberated air and form a scurn, which can be removed by flotation. In the arrangement shown in Fig. 1, the juice is impregnated with air or gas in a vertical vessel B through the length of which extends a perforated pipe D, through which air is introduced. The juice enters the vessel B at the bottom through a pipe A and overflows at the top through pipes C. The vessel in which the scum is formed and removed is shown in Fig. 2. It is provided with baffles 4 and steam-pipes 5 for heating, the steam entering alternate pipes on opposite sides of the tank. The scum overflows into the trough 8.
Patent GB-311122-A (GB)
Title: Improvements in or relating to spools of twine, thread or the like
IPC: B65D85/675
Filed: 1928-05-30
Abstract: 311,122. Robertson, R. N., and Ramsay, J. F. May 30, 1928. Spools of thread, twine &c. - A cross-wound coreless cylindrical spool of twine, thread or the like is provided with means whereby elongation of the spool during use is positively prevented, the means comprising non-rigid end members permitting passage of the free end of the twine secured to or integral with members extending longitudinally of the surface of the spool and parallel with the axis. In one form the means comprises a length of twine or the like a, Fig. 1, wound round the spool and extending diametrically across the ends, the twine being a continuation of that forming the spool or separate therefrom. In other forms a cylindrical paper wrapper d is wound round the spool and is crimped together at its ends d<1>, Fig. 5, or a projecting strip e, Fig. 3, is secured by adhesive across the ends of the spool, or an extension member in the form, of an apertured disc c, Fig. 2, is secured by a tab o across the ends. A separate band of paper may be disposed outside the wrapper d, or immediately within the wrapper and outside the spool, or beneath the last spool layer.
Patent GB-877667-A (GB)
Title: New dyeing process
Inventor: PARSONS BRIAN NEVILLE
Filed: 1959-05-08
Abstract: Natural or regenerated protein textile materials are dyed or printed with an aqueous dispersion of one or more disperse azo dyestuffs which are free from sulphonic and carboxylic acid groups but which contain, attached to a carbon atom of an aryl ring or an alkyl chain present in the nucleus of the dyestuff, at least one group: <FORM:0877667/IV(c)/1> wherein A represents a substituted or unsubstituted alkylene radical, Z represents a halogen atom or an oxiranyl group, Y represents a direct link or a -CO- group and B represents a hydrogen atom or a substituted or unsubstituted alkyl or aryl radical or a group -A-Z.  Specified substituted and unsubstituted alkylene radicals A are methylene, ethylene, trimethylene, isopropylene, hydroxytrimethylene, tetramethylene and a : b -dimethyl ethylene.  Specified substituted or unsubstituted radicals B are methyl, ethyl, propyl and butyl which may be substituted by hydroxy, methoxy or ethoxy groups, and phenyl or tolyl which may be substituted by methoxy groups. Dyeing is effected at a temperature up to or above 100 DEG C., at a constant or varying dyebath pH value and the dyebath may also contain ammonium sulphate, acetate or dihydrogen phosphate, diammonium hydrogen phosphate, disodium hydrogen phosphate, sodium bicarbonate, sulphuric acid, phosphoric acid, formic acid, acetic acid, ethyl lactate, ethyl tartrate and anionic, cationic or nonionic surface-active agents. Printing is followed by steaming and the printing paste may contain acid-binding agents and the usual thickeners and adjuvants such as sodium alginate, methyl cellulose, oil-in-water or water-in-oil emulsions, ethanol, urea and sodium m-nitrobenzene sulphonate. Specified disperse azo dyes are, among others, 2-trifluoromethyl- 4-cyano- 41-N : N-bis (b  : g -epoxypropyl) aminoazobenzene, 2-chloro- 4-ethylsulphonyl- 21-methyl- 41-N : N-bis (g -chlorob -hydroxypropyl) aminoazo benzene, 4-nitro- 41-N : N-bis (g -bromob -hydroxypropyl) aminoazobenzene, p  2-chloro-4-b -hydroxyethylsulphonyl- 21-methyl- 41-N : N-bis (b -bromoethyl) aminoazobenzene, 4- N-methyl- N- g -chlorob -hydroxypropylaminoazobenzene - 41-sulphonamide, 2-chloro- 4-methylsulphonyl- 41-(N- b -hydroxyethyl- N- b -chloroacetylaminoethyl) aminoazobenzene, 3, 4-dicarbomethoxy- 21-methyl- 41-(N-methyl- N- g  -chlorob -hydroxypropyl) aminoazobenzene, bis [1-[11-(511-chloroacetylamino- 211-methylphenyl) 31-methyl- 5-ketopyrazolyl- 41-azo] phenyl- 3-sulphon] imide and 2-chloro- 4-(N-methyl- N-g -bromob -hydroxypropyl) amino-21 : 51-dimethoxyazobenzene.
Patent GB-612395-A (GB)
Title: Improvements relating to photographic enlarging cameras
IPC: G03B27/36
Filed: 1946-05-24
Abstract: 612,395. Photographic enlarging apparatus. GUE, H. L. G. May 24, 1946, No. 15866. [Class 98 (i)] In an enlarger comprising a camera supported by a carriage slidable upon a vertical column, wherein rack and pinion gearing is provided between the column and the carriage, and operates cam-controlled automatic focusing means, and the carriage also carries means for manually moving the camera lens bodily to focus the apparatus independently of the cam-controlled means, the image table is provided with means for separate continuous adjustment of its position to accommodate extremely large throws of the projected beam. As shown, the carriage 9 bearing the camera 19 is movable up and down the vertical column 8 by rotating a handwheel 41 which, through worm-gearing 38, 39, feeds the threaded portion 28 of the rod 27 through the threaded sleeve 13 on the carriage, said carriage being attached by a cord 18 passing over a pulley 16 to. a counterweight within the column. A pinion 63 mounted on the carriage and engaging a rack 64 on the column is rotated as the carriage moves and drives, through a coaxial helical gear 62 engaging a second helical gear, a shaft 56 on which is mounted a snail cam 54, followed by a roller 53 secured to the plate- or film-carrier 48, which is thus moved up or down a slideway 12 on the carriage to maintain focus, the lens 24 remaining stationary on the carriage. Preferably the worm-wheel is secured to the rod 27 by making a portion 29 of it of square section to key into a complementary hole in the wheel, and the roller 53 is spring-urged against the cam. The roller may be replaced by a pair of rollers secured to two corners of a triangular plate which is pivoted at its apex on the carrier 48. To obtain extreme enlargement ratios, the image table 31 may be lowered by means comprising a hand-wheel 44 controlling via gear 45 rack-and-pinion gearing 43, 47 between the column 8 and the image table supporting sleeve 33, Fig. 4, and the lens adjusted to focus the image by rotating manually the wheel 69 on spindle 35 which moves by rack-and-pinion gearing the lens and its supporting frame up or down the slideway 12. Specification 529,633 is referred to. The Provisional Specification refers to pushbutton control of a motor which drives the carriage up or down the vertical column.
Patent GB-593987-A (GB)
Title: Synchronizer for electromagnetic change-speed gears
IPC: F16H63/30
Filed: 1945-06-21
Abstract: 593.987. Electromagnetic clutches. SOC. D'ETUDES ET D'APPLICATIONS INDUSTRIELLES ET COMMERCIALES INTERTECHNIQUE. June 21, 1945, Nos. 15894 and 15895. Convention dates, March 25, 1944, and Sept. 23, 1944. [Class 80(ii)] In an electromagnetic clutch for a variable speed gear the electromagnet A is provided with a resiliently mounted friction ring D over the winding B which engages the armature C, or an inserted friction ring J, to effect synchronism before the surfaces of the electromagnet and the armature engage. Alternatively the armature C may carry the ring D. As shown in Figs. 1 and 2 the ring D is carried by blade springs E fitting in radial grooves F of the electromagnet A while in Fig. 4 a resilient mass E such as rubber is employed. The ring D is of suitable anti-frictional material such as bronze while the co-operating ring J may be of surface hardened or treated steel. Various modifications of the rubber mounting are described and in some cases the rubber is mounted under preliminary elastic compression.
Patent GB-1209222-A (GB)
Title: Switching circuit
IPC: H02P1/42
Filed: 1968-04-03
Abstract: 1,209,222. Control of A.C. motors. INTERNATIONAL BUSINESS MACHINES CORP. 3 April, 1968 [1 May, 1967], No. 16014/68. Heading H2J. [Also in Division H3] A motor 25 is supplied from an A.C. source through a bridge circuit comprising rectifiers SCR 2a, SCR 2b, and diodes D14, D15, means being provided to connect the line voltage to the motor at an instant when the A.C. waveform has substantially zero voltage. When relay R1 is de-energized, its contacts are closed so that rectifier SCR 1 conducts to divert current from the gates of the rectifiers SCR 2a, SCR 2b. The gating circuit of the rectifier SCR 1 is opened when the relay R1 is energized, but the rectifier continues to conduct until the line voltage goes to zero at the end of the particular half-cycle. Either rectifier SCR 2a or SCR 2b fires during the next half-cycle whereby the motor is started. In another arrangement, the motor is supplied through a single silicon controlled rectifier connected to a diode bridge, Fig. 3 (not shown).
Patent GB-542158-A (GB)
Title: Improvements in boring tools
IPC: B23B29/034
Filed: 1940-11-05
Abstract: 542,158. Boring-heads. WESSON, CO. Nov. 5, 1940, No. 16103. Convention date, Dec. 28, 1939. [Class 83 (iii)] A boring-tool of the kind in which the cutters 27 are retractable radially in the tool-holder is actuated by a pull rod 18 which is electromagnetically operated and is connected by a screw plug 20 to a plunger 19 controlled by a spring 22 tending to depress the plunger to the position shown in Fig. 2 corresponding to the operative position of the cutters. The cutters are adjustably secured to a pair of L-shaped holders 25, 26, which are movable radially of the holder by means of toggle links 32, 33 connected to the plunger 19, the links being moved to over-centre position to effect the cutting. In this position the plunger 19 is engaged by an adjustable screwed sleeve 35 which is held in adjusted position by a lock-nut 36 after being adjusted by the aid of a spring-pressed ball 37 which engages recesses in the sleeve 35. When the rod 18 is withdrawn the toggles are broken and the cutters rendered inactive. The holders 25, 26 are L-shaped and serve as guides for one another, and the cutters are held adjustably therein. In Fig. 9 the cutters are adjustable by means of screws 28 and held in position by inclined keys 29 and screws 30. In Fig. 8 the cutters 45 are mounted in plugs 46 and adjustable therein by set screws 47, 48, the plugs being secured to the holders by screws 49.
Patent GB-698416-A (GB)
Title: Improvements in or relating to annealing copper and copper alloys
Inventor: WILLIAMS SIDNEY RICHARD
IPC: C22F1/08
Filed: 1950-06-28
Abstract: 698,416. Annealing copper. HAYNEINGLEBY, Ltd. June 27, 1951 [June 28. 1950], No. 16160/50. Class 72 Copper or copper alloy to be annealed is fed down a ramp into a tank of water and a flame played on it just above its point of entry into the water for a time sufficient to obtain the desired annealing. As shown, a tank 1 containing water to the level 2 is fitted with a ramp 4 having a firebrick lining 3. A pair of burners 5 mounted on a support 10 and fed with air and coal gas to produce a reducing flame extending across the material to be treated, are placed above the tank so that the flame is directed on to the material at its point of entry into the water. The material, e.g. strip up to #th-inch thick or sheet or small objects up to “-inch thick may be fed down the ramp continuously or intermittently. The material may be dried immediately in a non-oxidizing atmosphere to produce a bright annealed finish.
Patent GB-515520-A (GB)
Title: An improved overload device for lifts
IPC: B66B5/14
Filed: 1938-05-31
Abstract: 515,520. Lifts. WYLIE SAFE LOAD INDICATORS, Ltd., and WYLIE, H. N. May 31,1938, No. 16201. [Classes 78 (iii) and 78 (v)] On the load of a standing lift cage nearing the safe limit, a light signal is energized and a bell rung successively and on actual overload a circuit is opened and starting of the lift thus rendered impossible. This apparatus is combined with mechanism for cutting-out the safety-apparatus once the lift has started, so that an overload during running will not stop the lift between floors. A member 5, which bends under the load on the cage 4 transmitted through the pivoted lever 3 moves the switch arm 6 axially Several contacts of which 12 is insulated, are carried by the arm and the latter remains in permanent contact with the brush 7. As the arm moves towards the right the contacts 8 and 10 are closed, ..causing the light 19 to be illuminated, followed by the closing of contacts 9 and 11 causing the bell 20 to ring. At, or just beyond this point, the contact 12 leaves the contacts 13 thus preventing starting of the lift. When the lift has started, a relay. 14 is energized to move the member 18 to bridge the gap 13 and open the gap 7. This gives an alternative closure for circuit 13 so that movement of member 12 is no longer effective to break it, and also opens both the light and bell circuits so that they cannot function. In a modification the relay 14 may be in a separate circuit from that energizing the lift, which includes a switch on the cage normally closed, but opened mechanically by projections when the cage is standing at a floor. In another modification the relay is operated mechanically, for example by travelling screw - and - nut mechanism, so as to move it to the illustrated position, whenever the cage stands at a floor. Specification 400,428 is referred to.
Patent GB-161869-A (GB)
Title: Improvements relating to loose leaf books or binders
IPC: B42F13/00
Filed: 1920-06-16
Abstract: 161,869. Myatt, J. W. June 16, 1920. Clamping - devices; covers. - In loose - leaf binders of the type having screw telescopic posts between clamping-bars, the clamping movement is transmitted by a central wheel throuh idle wheels d to wheels c on the posts, the whole forming a train of straight-toothed ear-wheels situated within one of the clamping-bars. A spindle e on the central wheel projects through the inner side of this clamping-bar for the reception of an operating-key having a long stem which passes through holes in the leaves and the other clamping-bar. The usual sliding telescopic posts are indicated at h.
Patent GB-594884-A (GB)
Title: Improvements in or relating to electric clocks
IPC: G04C3/027
Filed: 1943-10-19
Abstract: 594,884. Electric clocks. DENTON, L. E. Oct. 19, 1943, No. 16320/44. Divided out of 574,169. [Class 139] In a clock in which contacts are closed by the pendulum to discharge a condenser through an electromagnet to provide maintaining impulses for the pendulum, the latter is connected by a flexible element to a rigid member hinged to a fixed support, contacts carried on the rigid member engaging fixed contacts shortly after the pendulum passes through its mid-position so that movement of the rigid member is prevented during the major part of the swing of the pendulum, The pendulum rod e is suspended from the lower end of a hinged rigid member c by a flexible element f. The bar c carries contacts g<1> and g<2> which co-operate respectively with adjustable contact screws h<1> and h<2> secured to the backboard a. The pendulum bob m has an armature l which co-operates with the pole pieces of an electromagnet k adjustable along the arc of swing. When the pendulum m is slightly to the left of its mid-position, Fig. 5, the contacts g<1>, h<1> are closed and the battery p supplies a charging current to the condenser q, said current passing through the electromagnet winding r. The. armature s is drawn .up and on its return stroke rotates the ratchet wheel u which is geared to the clock dial mechanism. On the return stroke of the pendulum m the contacts g<2>, h<2> are closed and so the condenser q discharges through the winding of the electromagnet k which supplies the impulse to the pendulum m. The pole faces n of the electromagnet k are carved in a plane perpendicular to the plane of swing of the pendulum so that the air gap remains constant even if the clock is out of level.