baber/WOPTO huggingface dataset:
Patent GB-389275-A (GB)
Title: Improvements in combined coinfreed weighing and delivery machines
IPC: G07F17/04
Filed: 1932-03-11
Abstract: 389,275. Coin-freed weighing and delivery apparatus. BURLEY, E. A., 6, Eastcheap, London. March 11, 1932, No. 7313. [Class 27.] Relates to a combined coin-freed weighing and delivery machine of the kind wherein, for each inserted coin, in addition to indicating his weight, the machine can be actuated to deliver alternative articles selected by the person using the machine. According to the invention, a plurality of coin shoots, each lead. ing to a separate delivery mechanism, are selectively opened to receive a coin released from the weight-indicating mechanism. A coin released from the bucket e, as shown in the Figure, of the usual coin lever f actuating the weight-indicating pointer drops to a shoot j and rolls over slides K<1> .. K<4> closing the tops of coin shoots j<1> .. j<4> leading to the delivery drawer releasing mechanism of a plurality of mechanisms each delivering a different kind of goods. The slides are carried by levers l<1> .. l<4> pivoted on a rod m and are actuated to uncover the shoots by pressing in knobs m<3>. By pressing in one of these knobs, the coin drops into the corresponding shoot and releases the respective delivery drawer n<1> .. n<4>. Should none of the knobs be depressed, the coin rolls to a constantly uncovered shoot j<5> to release a drawer n<5> delivering the most popular article vended. The coin is normally discharged from the bucket e in the usual way, on the return of the coin-lever f after the person has stepped off the weighing platform, by a lever e<1> wiping over a rack of pins i<1> and moving aside a shutter e<3> closing the bottom of the bucket. In order that a delivery drawer may be released, should a person not stand on the weighing platform after inserting a coin, one of the levers l<1> .. l<4> or a lever l<5>, in the case of the delivery drawer n<5>, when pushed in by a knob m<3> or m<5>, moves a a bar o which through a lever p and link q pulls down the rack i<1> against the action of a spring s. This relative movement of the rack i<1> and the lever e<1> releases the coin from the coin bucket.
Patent GB-1126825-A (GB)
Title: Ion separation
Inventor: AHRLAND STEN HARALD
IPC: B01D15/04
Filed: 1966-02-18
Abstract: 1,126,825. Zr phosphate; separating ions. ATOMENERGI A.B. 18 Feb., 1966 [23 Feb., 1965], No. 7355/66. Heading C1A. [Also in, Division G6]- Alkali and alkaline earth metal ions, particularly Cs<SP>+</SP> and Sr<SP>2+</SP>, are separated from an acidic aqueous solution containing UO 2 <SP>2+</SP> ions by adsorption on a Zr phosphate having a P/Zr ratio of 1À8-2À1 and a water content of 0À8-2 moles per mole Zr. The Zr phosphate may be produced by adding H 3 PO 4  to a solution of zirconyl nitrate in HNO 3 , leaving to stand, centrifuging, drying at 50-60 C., washing to an effluent pH of 3, and dehydrating to the required water content, so that the interstices have shrunk to such a degree that they absorb Cs and Sr ions but reject UO 2  ions. The Zr phosphate may be microcrystalline with an average crystallite size of 10-1000%, or amorphous. The initial solution may be 0À8 M in uranyl nitrate and 2 M in nitric acid.
Patent GB-1047617-A (GB)
Title: Improvements in or relating to devices for rolling of screw-threads onto rotating workpieces
Inventor: ENGEL RICHARD
IPC: B21H3/04
Filed: 1964-02-21
Abstract: 1,047,617. Rolling screw-threads. WERKZEUGFABRIK TREPTOW, VEB. Feb. 21, 1964, No. 7410/64. Heading B3M. A thread rolling machine for forming threads on a rotating workpiece 15 comprises a holder 1 pivotally mounted on a support 7 and supporting threading rolls 2 and 5. The holder 1 is biased anticlockwise by a spring 11 so that the roll 5 first contacts the workpiece 15 to preform a thread on it, the final thread form being produced by the pair of rolls. Roll 2 is axially movable, against spring pressure, to enable the roll to readily follow the preformed thread on the workpiece as the roll engages the workpiece. The initial position of the holder 1 is adjustable by means of a stop 14.
Patent GB-356091-A (GB)
Title: Improvements in or relating to pneumatic tyre and like valves
IPC: B60C29/06
Filed: 1931-03-12
Abstract: 356,091. Dust caps for tyre valves. FISCHER, A., 19, Seifertshofstrasse, and KOCH, F., 50, Weichengereuth, both in Coburg, Germany. March 12, 1931, No. 7677. Convention date, March 12, 1930. [Class 135.] A dust cap for a tyre valve is secured in position by frictional engagement with a spider slidably mounted therein and adapted to be screwed on to the valve stem. The spider comprises two V-shaped members e, f secured together at right-angles. The arms e have internally screwed parts g and external projections h adapted slidably to engage internal longitudinal grooves in the cap a. The arms f have similar parts of shorter length and also have internal wedge surfaces m. When the spider is screwed down by means of the cap, the wedge surfaces engage a rubber cover c over a packing d to press the packing against the end of the valve stem and to splay the arms f into tight engagement with the cap. The cap may have an enlarged recess in the part o and the grooves may increase in depth towards the top of the cap. A slotted extension n may be provided to facilitate manipulation.
Patent GB-400581-A (GB)
Title: Toothed wheel and method and machine for the production thereof
IPC: B23F5/20
Filed: 1932-03-15
Abstract: 400,581. Toothed wheels. FORSTER, A., 61, B÷ndlerstrasse, Kilchberg, Lindenberg, Switzerland. March 15, 1932, No. 7681. Convention date, March 17, 1931. [Class 80 (i).] In a toothed wheel A particularly suited to high speed mechanisms, the arc of contact e, g, is considerably less than the pitch, and continuity of contact between a pair of gears is maintained by curving the teeth longitudinally as shown in Fig. 2, wherein the height K of the curve of the developed tooth directrix is at least equal to the difference between the pitch t and the length of the arc of contact, and the zone of contact moves axially along the gear. In some cases the path of contact is reduced almost to nil, the height K being then at least as great as the pitch. The tooth profile p, Fig. 3, is of involute form generated from a base circle Kg. p being the pitch point, c d the active profile and alpha the pressure angle. Conjugate gears a, a<1>, Fig. 6, have toothed directrices s s<1>. In one modification, Fig. 7, only the dedendum c p of the profile follows an involute curve p<1> which is conjugate to an involute p<2> of an imaginary mating gear, while the addendum pd lies within the involute. In this case contact between pairs of gears is limited in theory to the pitch point p and there is no slip between the engaging tooth flanks. The tooth directrices s are of cycloidal or modified cycloidal form and are generated by straight sided rotary cutters mounted in a cutter head which is driven in timed relation with the work spindle to produce the cycloidal tooth form. The usual rolling-generating movements of the cutter and work are superposed on the cycloid producing movements. According to the invention, a pair of cutters F1, F2 are used for cutting one face of a tooth and another pair of cutters for the opposite face thereof, the cutters being mounted on milling heads connected with the work spindle. The cutter F2 having the normal pressure angle alpha generates mainly the middle part of the tooth flank while the cutter F1 inclined at the smaller pressure angle generates mainly the end parts of the flank, Fig. 15. The errors between the profile thus produced and the theoretical profile may be minimized by reducing the pressure angle alpha The invention is also applicable to the cutting of bevel wheels, the axis of rotation of the cutter spindles being inclined at the required angle to the bevel gear axis and the angular velocities of the cutting edges being periodically varied to obtain the desired pitch variations between the small end and the large end of the bevel gear teeth.
Patent GB-609367-A (GB)
Title: Improved composite tape for electric insulating and other purposes
IPC: H01B3/46
Filed: 1946-03-12
Abstract: An electrical insulating adhesive tape comprises a layer of woven or felted glass or asbestos fibres and a partially cured silicon resin, for example dimethyl or phenyl-ethyl silicone. Small amounts of diphenyl may be added.  The resins are applied either in volatile solvents, for example toluene or xylene, or dispersed in only slightly polymerized silicones.  In a modification, completely cured dimethyl silicone may be applied as a backing or intermediate layer.
Patent GB-134162-A (GB)
Title: Improvements in Fire-grates, Stoves, and the like.
Inventor: DAWSON STEPHEN GEORGE
IPC: F24B1/18
Filed: 1919-03-27
Abstract: 134,162. Dawson, S. G. March 27, 1919. Open fire-places.-A grate is mounted in a shell 4 to rotate on rollers in the wall dividing two rooms, or centrally in the junction of several such walls. The upper part of the shell has a cylindrical portion which fits rotatably in a socket carried by the chimney or flue. Fins 11 are formed on the shell behind the fire so as to radiate heat into the room or rooms not directly heated.
Patent GB-644937-A (GB)
Title: Spotting board
IPC: D06F43/00
Filed: 1948-03-15
Abstract: 644,937. Dry cleaning. RIGHTERKESSING, F. H. March 15, 1948, No. 7746. Convention date, April 3, 1947. [Class 138(i)] A trough construction for a spotting board comprises a rigid hair-pin shaped frame 8, a pan 11 depending from and conforming in outline to the shape of the frame and having a peripheral flange 12 whereby it is supported by the frame, a screen (13 or 14) also conforming in outline with the frame superimposed on the frame and pan, and a channelled retaining band 15 superimposed on the screen, and embracing the latter and the pan and frame. A perforated screen 13 of relatively heavy material may be used and/or a screen 14 woven from fine wires and formed with a depending flange 14A. A flat panel 16 formed integrally with the band 15 provides a tamping board. The band 15 and frame 8 are preferably of stainless steel.
Patent GB-100766-A (GB)
Title: Improvements in Bearings for Rock Shafts.
Inventor: ROY EDWARD DAVID
IPC: E21B17/04
Filed: 1916-06-01
Abstract: 100,766. Roy, E. D. Jan. 11, 1916, [Convention date]. Adjusting for wear.- A bearing for a rockshaft comprises a split conical sleeve 8 which is pressed by a coiled spring 11 into a conical casinn 7 to take up wear automatically. One end of the spring is secured to a sleeve 9 fixed to the shaft 6, and the other end engages a series of ratchet teeth 13 on the end of the bearing 8. The rocking movement of the shaft changes the tension of the spring, and there is consequently a tendency for the bearing 8 to rotate. A slight rotation takes place from time and time and equalizes the wear. If the sleeve S is in two parts, these are interlocked as shown.
Patent GB-926840-A (GB)
Title: Improvements relating to windings in electrical machines
Inventor: FARMER ERNEST
IPC: H02K3/48
Filed: 1961-03-03
Abstract: 926,840. Securing windings in dynamoelectric machines. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 19, 1962 [March 3, 1961], No. 7844/61. Class 35. Slot-windings 6 are kept under pressure in spite of plastic flow in service of their thermoplastic insulation 8 by compressed elastomeric strips 9, e.g. of silicone rubber, extending along the slot. Expansion of the elastomer out of the ends of the slots may be prevented by suitable plates. The insulation 8 may comprise wrappings of mica backed with glass, cotton or paper impregnated with bitumen or shellac.
Patent GB-124103-A (GB)
Title: An Improved Mould particularly adapted for use by Children.
Inventor: UMNEY FREDERIC ERNEST
IPC: A63H33/32
Filed: 1918-05-10
Abstract: 124,103. Umney, F. E. May 10, 1918. Boxes combined with toy moulds; hand-holes. -A mould for use as a toy for making sand bricks comprises a body portion a having a loose bottom band folding handles c capable of being folded over the bottom portion when not required and being of sufficient length to meet each other, as shown, to facilitate the carrying of the mould with articles placed therein.
Patent GB-372024-A (GB)
Title: Improvements in and relating to mess tins for scouts, motorists and others
IPC: A47J33/00
Filed: 1931-03-14
Abstract: 372,024. Mess tins. WADE, W. K., 173, Spring Hall Lane, and WADES (METAL SPINNERS), Ltd., Fenton Works, both in Halifax. Yorkshire. March 14, 1931, No. 7889. [Class 88 (i).] In composite mess tins wherein the several vessels are formed without any projections or the like, each vessel is constructed with a roll or hollow rim D provided with one or more slots J therein, whereby cranked ends K of a detachable bent wire handle H may be inserted in the rim. The handle may be locked in engagement by a clip L movable thereon which, when drawn towards the looped end of the handle, permits the ends K to be squeezed together for engagement with or detachment from the rim. A half-loop or semicircular handle comprising two sections coupled together with their free ends similarly engaging slots in the rim may be provided. Vessels serving as a kettle, cooking utensils, dishes and plates may be provided so constructed as to be enclosed within two outer telescoping vessels. A cover may be provided with a pivoted looped handle.
Patent GB-778799-A (GB)
Title: Improvements in or relating to a machine for use in the manufacture of slide fasteners
IPC: A44B19/58
Filed: 1956-03-14
Abstract: 778,799. Making sliding clasp fasteners. WALDES KOH-I-NOOR, Inc. March 14, 1956 [April 21, 1955], No. 7937/56. Addition to 775,407. Class 83 (2). In an improvement in the apparatus claimed in the parent Specification for producing a succession of measured lengths of slide fastener chain 10 cut-off from a continuous chain, and having element-free gaps at one end and adjacent the other end of each measured length produced by removing the fastener elements from the chain at predetermined positions by means of punches 15a, 15b two locating pins 19, 20 are provided rearwardly of the punch set 15 which pins are permitted to move relatively to one another in their movements towards the chain. Both locating pins are biased downwardly by springs 24, 25 and are raised from the chain by a rotating cam 29 and lift rod 27. The pin 19 has a locating edge 19a for engaging the elements of one stringer and a second locating edge 19b for engaging the elements of the other stringer, said edges 19a, 19b being spaced apart a distance approximately half the pitch of the fastener elements. The punch 20 has a locating face 20a for one stringer and a second locating face 20b for the other stringer, said edges being also spaced from each other at half the pitch of the elements. The edges 19a, 20a and also the edges 19b, 20b are spaced from each other a distance approximately equal to the distance between adjacent elements on the same stringer whereby upon descent of the locating pins, one or other of the edges 19a, 20a will engage in the gap between adjacent stringers and thus ensure more accurate measured lengths of chain being produced. The stretching pin 16 is biased downwardly by a spring 35 and moved upwardly by a cam 39. Alternatively the two locating pins may each have one locating edge 19a, 20a only for operating of the same stringer or these pins may have each one locating edge 19a, 20b or 19b, 20a for operating on opposite stringers.
Patent GB-680577-A (GB)
Title: Improvements in laminated magnetic cores for electric transformers
Inventor: CHURCH RICHARD HEPWORTH
IPC: H01F27/245
Filed: 1950-03-30
Abstract: 680,577. Transformers. N.G.N. ELECTRICAL, Ltd. March 28, 1951 [March 30, 1950], No. 7938/50. Class 38 (ii). A transformer core is built of a plurality of pairs of E-shaped laminations A, each pair being arranged in a common plane to form a rectangle, each lamina of a pair having their outside legs a1, a3 of unequal length, the centre leg a2 being cut at an angle. The pairs of laminations are stacked so that adjacent laminations are reversed to one another, thus forming butt and lap joints throughout the stack. The laminations may be coated on one side with an.insulating substance to reduce eddy currents. In another embodiment all three legs are cut at an angle of 45 degrees.
Patent GB-879705-A (GB)
Title: Improvements relating to ring gear and differential case assemblies
IPC: F16H48/06
Filed: 1960-03-07
Abstract: 879,705. Toothed gearing; securing together rotary parts. GLEASON WORKS. March 7, 1960, No. 7968/60. Classes 80 (1) and 80 (2). A ring gear 14 is secured to a differential case 10 by explosive rivets which pass through cylindrical apertures 37 in a flange 21 of the case 10 and through complementary semi - cylindrical recesses 35, 36 in adjacent cylindrical surfaces 16, 17 of the gear 14 and the case 10. The gear 14 has a back face 18 seating against a surface 19 of the flange 21, the surface 19 being preformed as a shallow internal conical surface, which is held flexed into surface contact with the back face 18 of the gear by the rivets.
Patent GB-835847-A (GB)
Title: Method of preparing boro-organic compounds
IPC: C07F5/02
Filed: 1958-03-12
Abstract: Organoboron compounds, containing at least one boron-carbon linkage, are prepared by reacting a boron halide (as hereinafter defined) with an alkali metal hydride and an olefinic or cyclic olefinic compound in the presence of an organic amine and of an organic boron or organic metallic compound capable of activating the alkali metal hydride.  The term boron halide is defined as meaning any compound in which at least one chlorine, bromine or iodine atom is bound to a boron atom, examples being boron trichloride, diboron tetrachloride, alkyl boron halides or alkoxyboron halides.  The alkali metal hydride is introduced in an inert dispersant and must be first transformed into an active soluble form.  Suitable activators are the organic compounds of boron, aluminium or gallium, particularly the alkyls, alkyl hydrides and alcoholates thereof, and the presence of only 0.2% of these compounds, based on the alkali metal hydride, is sufficient, but 5 to 30% is preferred.  If other organometallic compounds are employed, they will react with the boron halide to form boro-organic compounds.  The organic amine used is preferably a tertiary amine such as trialkylamines, morpholine or piperidine. The reaction may be effected at temperatures up to 220 DEG  C. in the presence of inert solvents, and at slightly elevated pressure. Specification 830,768 is referred to.
Patent GB-129751-A (GB)
Title: Improvements in or relating to Electric Relays.
Inventor: HEAP ARTHUR CECIL
IPC: H01H71/20
Filed: 1918-05-14
Abstract: 129,751. Heap, A. C. May 14, 1918 Electrically - released switches; t h e r m a l switches. - In electric relays which are held open by a strained cord or thread, the thread 14 having in its length a small mass of fusible material 24, this mass is surrounded bv a coil carrying the current, so that the heat generated is concentrated in a small space. The cord is attached to a crosspiece 15 and, by a silver ring 16, to a tensioning-spring 17; it is either in two parts or looped, the fusible material connecting the divided parts or holding the loop. The heating- coil is connected by the loose wire 25 to terminals on the head 4, and the screw contact 20 is also connected to a terminal. When the fusible mass, which may be spermaceti wax or an alloy, melts, the cord d i v i d e s or lengthens, and the ring 16 bears on the contact 20 and closes the relay circuit. Two buttons 23 space the cord &c. in a paper tube 13 which carries on its outside a brass bobbin 12 surrounded by an auxiliary heating-coil 26; this coil is used to raise the temperature of the whole device and increase its sensitiveness. It is of particular use when the relay is employed in submarine devices as described in Specification 130,376 to bring the temperature of the apparatus, when submerged, to the temperature during manufacture. Cottonwool 11 packed between paper tubes 7, 9 surrounds the inner tube, &c., the whole being contained in a casing 1 with end plugs 3, 4 and cap 6. The cord is impregnated along its whole length to prevent hygroscopic changes of length.
Patent GB-1110643-A (GB)
Title: Benefication of cassiterite ores by froth flotation
IPC: B03D1/012
Filed: 1967-02-21
Abstract: Cassiterite ore is beneficiated by subjecting an aqueous pulp of the ore to froth flotation in the presence of a collector selected from the class consisting of water dispersable alkyl sulphosuccinates and alkyl sulphosuccinamates.  The number of carbon atoms in the collector molecule is at least 8 and preferably 18.  A particular collector may be dioctyl sulphosuccinate or N- octadecyl tetrasodium 1,2 dicarboxyethyl sulphosuccinamate or may be in the form of another alkali metal salt or of an alkaline earth metal salt.  The collector concentration may be between 10-6 and 10-4 mols per litre of pulp. Flotation may be carried out at a pH of between 2.0 and 10.0  The flotation may take place first in rougher cells followed by one or more cleanings of the rougher concentrate. The collector may be added once at the beginning of the operation or in stages.  The pulp may contain between 15 and 30% of solids by weight.  A frother may be added during the process.  Activators for the cassiterite may be added in the form of ions of polyvalent metals, e.g. soluble salts of ferric iron, lead, zinc or copper in amounts not exceeding 10-2 mols per litre. Small amounts of a sulphide collector, e.g. a xanthate, may be added at the same time.  When the ore contains minerals such as tourmaline, topaz, fluorite, siderite and iron oxides, e.g. hematite or magnetite, these may be depressed by the addition of small amounts of soluble silicates, fluosilicates, ferrocyamides or ferricyamides either at the roughing or cleaning stage. Sulphide flotation reagents may be used to remove sulphide minerals, if present, before flotation of the cassiterite.
Patent GB-374964-A (GB)
Title: Manufacture of cellulose compounds
IPC: C08B11/02
Filed: 1930-03-14
Abstract: Cellulose alkyl ethers soluble in alkalies but insoluble in water, are made by acting on cellulose or its near conversion products with alkylating-agents, in particular with dialkyl sulphates, without extraneous supply of heat or in some cases with cooling.  Large or small proportions of alkylating-agent may be employed; very good results are given by the use of 0,3 to 1,0 molecular proportion of alkylating-agent to one molecular proportion of cellulose.  The amount of alkali used may be smaller than the quantity of water present; and the alkali cellulose may be either not matured at all or matured for a shorter period than usual.  The treatment with alkali and alkylating-agent may be carried out simultaneously or successively in either order; a catalyzer such as a copper, nickel, or iron salt may be added; and the alkylating-agent may be diluted with benzol &c.  The reaction product may be worked up directly into technical products by solution of the reaction mixture in alkali or in water if sufficient alkali is present; or the product may be isolated by washing with water with or without neutralization of the alkali; and the product may be finally dried, if desired after previous dehydration with alcohol.  The products may be worked up into artificial threads, films, and coatings of all kinds, a solution of the product being brought into the desired form and then acted on with a coagulating-agent such as is used for viscose; and such agent may have also a plasticizing effect on the coagulated product, for example, 35-50-80 per cent sulphuric acid or other strong mineral acid may be used, and the coagulation and plasticizing may take place as separate steps.  Examples are given illustrating the preparation and working-up of methyl and ethyl celluloses and of mixed methylethyl celluloses, the corresponding dialkyl sulphates or mixtures thereof being used as the alkylating-agents.  Specifications 177,810, 203,346, 203,347, and 274,521, [all in Class 2 (ii), Cellulose &c.], are referred to.