baber/WOPTO huggingface dataset:
Patent GB-472258-A (GB)
Title: Improvements in or relating to the classification of material by elutriation
IPC: B04C7/00
Filed: 1936-03-18
Abstract: 472,258. Wet -separating apparatus. ANDREWS, L. March 18, 1936, No. 8119. [Class 82 (ii)] In apparatus as described in Specification 340,027 water is introduced under pressure into the lower part of the classifier from a nozzle 6, Figs. 1, 3, of ogee-shape in vertical section and supplied from a pipe 7 through a, plate 8 having a series of downwardly inclined tangentially-arranged passages 8a. The classifier comprises an upper cylindrical part 1, and lower conical parts 1a, 34 with a space 36 between them into which the material to be treated is introduced tangentially at 5. The classifier also contains a chamber B so arranged as to provide passages 35, 38, 40. The upper end of the latter opens into a conical extension of a pipe 46 and the flow of fines may be induced therethrough by means of a propeller 41. The siphon 2 draws from the upper part of the classifier through a chamber 20; the rate of withdrawal can be altered by varying the effective length of the outletleg as by a valve 24 and the said length can be measured by a gauge such as 22. The upper part of the classifier is closed and escape of air is provided for by a pipe 19 having a depending leg 27 closed by a seal 27a or a one-way valve, and which communicates with the upper part of the siphon. The outlet-valve 4 may be opened against the action of weights 55 by a wheel 63 adapted to lower a lever 60 carrying pins 58, 59, or it may be operated automatically by a diaphragm in a chamber 65 controlled by the pressure in the upper part of the classifier through a pipe 67. The nozzles 5 communicate with the feed tank, Fig. 5, by a pipe 15 which terminates short of the bottom of and passes through or over the side of the tank to avoid choking, a valve 17 being provided in the latter case. The lower part of the classifier has a dished or fiat apertured plate 13 which may be provided with a depending tube 13a, a pipe 14 also being provided. The nozzle is provided with a depending member 10 to prevent abrasion thereof. The wall 34a may be perforated in the region of the nozzles 5, which may be interchangeable.
Patent GB-1453128-A (GB)
IPC: G03B31/02
Filed: 1974-02-22
Abstract: 1453128 Positioning film cartridges EASTMAN KODAK CO 22 Feb 1974 [22 Feb 1973] 8160/74 Heading G2X A positioning means for film cartridges of more than one size includes a retaining member which is movable between an idle position and a cartridge engaging and retaining position, but is prevented from so moving if the cartridge is incorrectly positioned. The arrangement described is intended for use in a photographic processing device, but may also be used in cameras or projectors. As shown in Fig. 2, the positioning means includes a nest 16 having a flat surface 17 on which the cartridge rests. From surface 17 three flanges 18, 19, 20 extend upwards, and the surface 17 is itself supported on a flat base-plate 21 forming part of the processing device. The retaining member 22 is fixed to a plate 23 which can move in a recess 24 in plate 21. Member 22 can slide inwards towards flange 18 from the open position of Fig. 2 to grip a cartridge of a first size, Fig. 3 (not shown), or farther still to grip a cartridge of a second size, Fig. 4. It can be locked in either of these closed positions by a releasable locking device 28. The surface 17 has two spaced abutments 58, 59, and when the cartridge is properly positioned, these abutments enter into notches (12, 13), Fig. 1 (not shown) in the cartridge, and the film can then be withdrawn from the cartridge and led round the rollers 55, 56, 57 to the processing station. If the cartridge is incorrectly positioned, the abutments cannot align with the notches, so that the cartridge rests in a raised position on the abutments, so preventing member 22 from being moved inwards to the securing position. If a smaller size cartridge is to be positioned in the nest, the abutments 58, 59 are spaced from the cartridge. In this case a tongue 40 depending from plate 23, with a roller 42 at one end, engages with a probe or lever 44. A free end 47 of the probe extends upwards into an opening 48 in surface 17. In the first cartridge engaging position (i.e. with the larger cassette), the end 47 does not actually extend through opening 48, but with the smaller cartridge, roller 42 enters into a cam slot 43 in lever 44 and raises it, so that end 47 passes right through opening 48. If the cartridge is not properly positioned, it is lifted by end 47, so that further movement of retaining member 22 is prevented. A further probe 50 is positioned to engage with a corresponding notch 5 on the smaller cartridge, which may be located in a different relative position on the cartridge, to verify its presence, and in its absence prevents movement of member 22.
Patent GB-807145-A (GB)
Title: Apparatus for dispensing liquid and semi-liquid substances from a reservoir into a smaller container
IPC: G01F11/02
Filed: 1957-03-12
Abstract: 807,145. Reciprocating pumps; syringes. BECHER, H. March 12, 1957 [March 21, 1956 ; Aug. 17, 1956 ; Feb. 11, 1957], No. 8162/57. Classes 102(1) and 102(2). The plunger 6 of a pump mounted in a reservoir 1 is provided with a nozzle 7 adapted to be engaged by a nozzle 27 of a container 22 to be filled from the reservoir. The container 22 enters an opening 12 in a cap 10 and is used to actuate the plunger on its down stroke. Drain passages 16, 17 are provided in the cylinder 2 and cap 10. The container 22 may be provided with a rib to limit the stroke of the piston ; by inserting the container in a number of pumps the reservoirs of which contain different liquid a mixture containing a predetermined quantity of each liquid is obtained. In a modification, Fig. 2 the cylinder 2<SP>1</SP> is secured to a cap 10<SP>1</SP> and a bush 18 is slidable in the cylinder bore, bars 19, 20 engage and guide a cylindrical extension on a container insertable into the bush. The modified container shown in Fig. 8 is provided with a nozzle 38 for engagement with the pump nozzle and a piston 37 having a rod 39 extending through a sliding bush 40, the cylinder and bush having flanges 35, 41, respectively, engageable by the fingers so that by first pressing the rod 39 then the rod and bush together the contents of the cylinder are dispensed in two parts.
Patent GB-1521171-A (GB)
Title: Wound coverings
IPC: A61F13/02
Filed: 1977-03-30
Abstract: 1521171 Acrylonitrile copolymer membranes; wound coverings UNIVERSITY OF STRATHCLYDE 30 March 1977 [2 March 1976] 8200/76 Heading C3V A wound covering for the treatment of burns comprises a membrane formed from a composition comprising an acrylonitrile/dialkylamino-alkyl (meth)acrylate copolymer and an anti-microbial agent, e.g. a sulphadiazine compound. The membrane may also include a plasticizer, and may be modified by treatment with gaseous alkylene oxide as described in Specification 1,411,483.
Patent GB-148740-A (GB)
Title: Improvements in water jet pumps
IPC: F04F5/46
Filed: 1920-03-19
Abstract: 148,740. Hanff, M. July 26, 1919, [Convention date]. Aspirating-apparatus, jet-pump.-In water-jet pumps for laboratory use and the like, the cross section of the supply conduit a is reduced before the nozzle b either by a constriction such as g, Fig. 1, or by the insertion of a small solid body h, Fig. 2. The Specification as open to inspection under Sect. 91 (3) (a) described also a supply conduit having an enlarged portion immediately before the nozzle. This subject-matter does not appear in the Specification as accepted.
Patent GB-1040661-A (GB)
Title: A method of producing lithium fluoride
IPC: C01D15/04
Filed: 1964-02-27
Abstract: Readily-filterable lithium fluoride is precipitated from a lithium containing solution by addition of hydrofluoric acid or a salt thereof, wherein the precipitation is commenced at a pH below 7 and completed by raising the pH. HF may be added as gas or solution, while a fluoride, e.g. NaF may be added as solution or solid.  The lithium solution may be a Li2SO4 solution resulting from the treatment of ores with or without added H2SO4.  The acid solution is neutralized by alkali metal, e.g. Na, carbonate or hydroxide.
Patent GB-215518-A (GB)
Title: Improvements in and connected with the pouring or casting of metal into ingot and similar kinds of metal moulds
IPC: B22D9/00
Filed: 1923-03-24
Abstract: 215,518. Hosack, H. H. March 24, 1923. Moulds for casting ingots &c. are provided with firebricks to protect the walls of the mould from splashing. For a top pour mould a central block 4 carries a funnel 3 and rests on the bottom of the mould bv feet 5. The side bricks 2 are retained in the position shown by hooks 7 till the cast metal melts them. The bricks rise with the metal and the taper of the central block maintains the side blocks in contact with the wails of the upwardly tapering mould. Recesses 11 at the backs of the blocks 2 may receive strips of metal to cause all the side blocks to move together, and hook ends 12 at the tops of the blocks are engaged by catches on the tops of the mould' to determine the maximum height to which the blocks shall rise. As applied to a bottom pour mould the central block consists of a plain plate with feet. The central block may be arranged to act in conjunction with a lifting or controlling mechanism.
Patent GB-165917-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H21/56
Filed: 1920-03-22
Abstract: 165,917. Hodges, H. C. March 22, 1920. Switches, quick-break; bases, cases, and covers. -An electric multi-pole knife switch includes a casing 10 with a hinged or removable cover 11, and a square operating-spindle 1 having rounded portions at each end, which are pivotally supported in the sides of the casing. Mica or other insulating-material 2. is wrapped around the spindle 1, two-pa.rt arms 3 being secured to the insulated spindle, these arms carrying pivotally at 4 contact blades e, adapted to bridge fixed pairs of contact clips a, b when the switch is closed. Projecting closing-arms 5 for the switch blades are formed integrally with the contact-supporting arms 3. The tops of the closing-arms 5 may be forked to assist in the correct alignment of the switch blades. The operating-spindle 1 is rotated by means of a crank or handle 9 secured at one end outside the switch case 10, the handle 9 having a lug 13 which co-operates with a projection 12 of the lid 11 to prevent opening of the lid with the switch in the closed position. A coiled spring 8 biasses the switch blades e towards the closing-arms 5, the opening of the switch first raising the arms 5 clear of the switch blades owing to lost motion between the operating-spindle and switch blade, during which the quick-break spring 8 is strained, further rotation of the spindle causing positive engagement between the bevelled end 7 of the extended switch blade and on opening projection 6 rigid with the spindle 1, which projection may consist, as shown, of one of the angles of the square operating-spindle 1. In a modified form of the switch, the switch blades are freely mounted on insulating bushes surrounding a round spindle or a rounded portion of a non-circular spindle, closing arms 5 and opening arms 6 being rigidly secured to the operating-spindle adjacent to the switch blades, and both arms being suitably bent to engage the switch blades.
Patent GB-565154-A (GB)
Title: Improvements in or relating to hot tops for ingot moulds
IPC: B22D7/10
Filed: 1943-05-27
Abstract: 565,154. Ingot moulds; mould materials. FERRO ENGINEERING CO. May 27, 1943, No. 8502. Convention date, July 30, 1942. [Class 83 (i)] To reduce the amount of waste metal in a sink head 11, a hot top is used having a lining of exothermic material 20, Fig. 3, applied as a paste or in dried blocks, to the semipermanent lining 18. The hot top may be made wholly of refractory material 32, Fig. 7, and a lining 33 of exothermic material may extend over the whole surface. The lining 20 or 33 may be shaped to cause a constriction C between the sink head 11 and ingot 10. The exothermic lining may be applied to a recess in.the lower part of the inner face of a refractory hot-top 35, Fig. 8, as a paste 37. The constriction C or projections 36 assist in secuiing crane bits of a handling crane. The exothermic lining may include coal, coke breeze, tar and graphite, ferro-silicon, aluminium dross, straw, oat or rice hulls, &c., and is preferably sealed off from the cast metal by a coating impervious to the gases produced in use. The refractory materials 18, 32, 35 comprise high insulating refractories which will not withstand direct contact with molten metal. A layer of insulating or exothermic material 21 may be placed on top of the cast metal. Specification 532,243 is referred to.
Patent GB-1209086-A (GB)
Title: Improvements in and relating to a suspended ceiling
IPC: E04B9/16
Filed: 1968-02-21
Abstract: 1,209,086. Suspended ceilings. DAEMPA A/S (DET FYENSKE TRAELASTKOMPAGNI A/S). 21 Feb., 1968 [22 Feb., 1967], No. 8521/68. Heading E1W. In a suspended ceiling, rectangular panels have upturned longitudinal flanges which may be integral as in Figs. 5 and 6 (not shown) or separate but attached as at 11, each subtending an angle of slightly more than 90 with the plane of the panel, the panels being mounted with their transverse edges upon rails 1 and carrying downward projections integral with their transverse edges (Figs. 5 and 6) or at the ends of the flanges 11, such downward projections being engaged in grooves (Figs. 5 and 6) or slots 3 formed along the upper faces of the rails 1. The separate flanges 11 may be glued to the edges of the panels or may be secured within edge grooves in the panels. A hanger may engage the groove 3 or may be fixed to a web projecting upwardly from the zone between the projection-receiving grooves in the rails, (Figs. 5 and 6). Abutting adjacent flanges 11 leave visible slots between adjacent panels on the finished ceiling.
Patent GB-787264-A (GB)
Title: Improvements in or relating to arc-melting furnaces
Inventor: SWAINSON ERIC
IPC: F27D11/08
Filed: 1955-03-25
Abstract: 787,264. Electrode mounting in arc-melting furnaces. IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 16, 1956 [March 25, 1955], No. 8741/55. Addition to 737,043. Class 39(3) An arc-melting furnace according to the parent Specification, i.e. of the kind incorporating a non-consumable electrode adapted for movement relative to part of the furnace through a gas seal, in which a scraping device is located immediately adjacent the seal adapted to remove metallic deposits and the like from the electrode surface, is modified in that the scraping device is located on a mounting which extends into the furnace and is surrounded by a sheath of insulating material so as to prevent bridging between the scraping device and the furnace lid by material deposited during the melting operation. The scraping device comprises a knife-edged ring secured to the lower end of a steel tube and supports a concentric sleeve of non-conducting material, e.g. porcelain, silica. anodized aluminium or enamelled steel over the intermediate part of the tube. The upper end of the tube, within which the electrode stem moves longitudinally, is. flanged for attachment to the electrode housing.
Patent GB-857223-A (GB)
Title: Improvements relating to semi-automatic presses
IPC: F16P3/04
Filed: 1957-03-18
Abstract: 857,223. Machinery guards. HURST, E. J. June 6, 1958 [March 18, 1957], No. 8752/57. Class 80 (4). In a power-driven screw press wherein a starting handle 15 controls a pair of driving friction discs, one of which is shown at 14, engaging a flywheel 13 on the press screw 11, a guard 33 in front of the die box 12 is suspended from arms on a shaft 23 extending across the press, the shaft 23 carrying at one end a cam 34, Fig. 2, forming an interlock with a roller 35 or a lever of the press-starting linkwork, while the other end of shaft 23 is linked to rotate a cam 40 co-operating with a spring-raised plunger 41, Fig. 1, mounted in the path of the descending flywheel 13. The guard 33, which has a window 33a, is raised by a weighted arm 28 and lowered by a handle 20. The cam 34 and roller 35 co-operate so that the press cannot be started until the guard has been lowered, and subsequently the guard cannot be raised so long as the handle 15 is held in the "on" position. The interlock 34-35 is released to allow opening of the guard during the return movement of the flywheel. The cam 40 and plunger 41 cooperate so as positively to prevent descent of the flywheel, e.g. under gravity or if the interlock 34-35 fails, when the guard. is raised to its open position. The cam 40 has a number of recesses which co-operate with the plunger 41 to prevent its complete descent at intermediate positions of the cam, i.e. when the guard is partly open.
Patent GB-369400-A (GB)
Title: Improvements in air filters
IPC: B01D46/30
Filed: 1931-03-21
Abstract: 369,400. Air filters. STEWART, A. W. 150, Helen Street, Govan, Glasgow. March 21, 1931, No. 8767. [Class 8 (ii).] An air filter is packed with elements formed of spirals or scrolls 1 of perforated metal through which the air passes transversely. Short elements may be packed irregularly, or elements may be used extending the width of the filter frame and arranged in horizontal rows facilitating the retention of oil on their surfaces. The frame may be of expanded metal retaining the elements and may have handles 6.
Patent GB-166934-A (GB)
Title: Improvements relating to the reduction of trinitrotoluol
Filed: 1920-03-25
Abstract: 2 : 4 : 6 - Triaminotoluene is prepared by reducing trinitrotoluene by means of iron, water, and a small proportion of an acid such as hydrochloric acid.  The product couples with diazobenzene to form an azo dye of the chrysoidine type.  With oxidizing-agents such as copper sulphate, triaminotoluene yields yellow to brown shades on wool, silk, or cotton.  Specification 137,529 is referred to.ALSO:2 : 4 : 6-Triaminotoluene with oxidizing-agents such as copper sulphate yields yellow to brown shades on cotton, wool, or silk.
Patent GB-351016-A (GB)
Title: Improvements in the production of acetaldehyde from acetylene
Filed: 1930-03-19
Abstract: A catalyst for the preparation of acetaldehyde from acetylene and steam is prepared by adding dehydrated boric acid to syrupy phosphoric acid and evaporating to dryness.ALSO:Acetaldehyde is prepared by passing a mixture of acetylene and steam over a catalyst comprising boron trioxide in chemical combination with a non-volatile acid such as phosphoric acid. Temperatures of 200-400 DEG  C. are employed and preferably a twofold excess of either acetylene or steam.  Examples are given of the use as catalyst of a boron phosphate prepared by adding dehydrated boric acid to syrupy phosphoric acid and evaporating to dryness.
Patent GB-1347947-A (GB)
Title: Snap-acting intermittent rotary drive mechanisms
IPC: G05G21/00
Filed: 1972-02-25
Abstract: 1347947 Toothed gearing OMP OFFICINE MECCANOPLASTICHE DI PRECISIONE SpA 25 Feb 1972 [27 Feb 1971] 8866/72 Addition to 1305656 Heading F2Q [Also in  Division H1] An arrangement for the intermittent driving of a wheel 10 having two, axially spaced, rings of teeth, comprises two nibs 23 and 24 on an axial pin 22 of a driving wheel 17, one nib engaging both sets of teeth and being longer in the axial direction than the other nib which only engages one set of teeth. In the condition shown the wheel 10 is held stationary by two ribs midway along a lever 50, pivoted at 51 and biased (towards wheel 10) by a spring 52. The opposite side of the driving wheel 17, as shown in Fig. 4, has two studs 56 and 57 engaged by a catch 53 at the end of lever 50, so that the rotation of the wheel 17 causes the lever 50 to be pivoted away from a stop 58 to disengage the ribs from the wheel 10 and allow a nib, 23 or 24, to rotate the wheel 10 by one tooth, the wheel 10 being held still by the ribs again after the catch 53 has passed over the stud 56. A spring 19 co-operates with cam lobes on wheel 17 as shown in Fig. 4, to control its movement. The arrangement is for use in generating pulses of different durations in a timing programmer for such as linen washing machines and dish washing machines.
Patent GB-309716-A (GB)
Title: Improvements in or relating to detachable wheel mechanism for motor cycles and the like
IPC: B62K25/02
Filed: 1928-03-24
Abstract: 309,716. Enfield Cycle Co., Ltd., and Smith" F. W. March 24, 1928. Wheels, facilitating detachment of. - Mechanism for facilitating the detachment of the rear or front wheels of motor-cycles &c. comprises a spindle formed of two end parts b, c, united by a connecting-pin a and rigidly carried by the fork ends b<1>, c', the parts b, c supporting ball bearings b<2>, c<2>, the outer elements b3, c<3> of which, in the rear wheel construction shown, carry respectively a brake drum b<4> and a chain sprocket c<4> with cushion drive c'. The wheel hub comprises inner and outer concentric tubes e, d held together by end pieces f, and is provided with flanges d<1>, to which the spokes are attached, and which are perforated for the reception of transverse bolts g, which pass through apertures in the sprocket mechanism and screw into apertures in the brake mechanism, the sprocket being, if desired, additionally secured to the flange d<1> by a sleeve c<7> surrounding each bolt. By removing the bolts g, sleeves c', and pin a, the wheel may be detached, leaving the ball bearings in position on the fork ends. In the case of a front wheel, the sprocket and, if desired, the brake drum are omitted, and the outer members of the ball bearings are formed with flanges to receive the bolts g.
Patent GB-150244-A (GB)
Title: Improvements in piston-rings
IPC: F16J9/14
Filed: 1920-03-26
Abstract: 150,244. Beecher, E. March 26, 1920. Piston packing.-Consists in a form of joint for a divided ring. At each end of the ring is a tongue t of half the thickness and half the depth of the ring, which fits into a corresponding recess in the other end. The corners are rounded at c to guide the parts together when the ring is being closed. The faces e at the side of the tongues abut when the ring is in use.
Patent GB-165228-A (GB)
Title: Improvements in and relating to stoves or fires
IPC: F24B1/00
Filed: 1920-03-26
Abstract: 165,228. Brook, S. V. March 26, 1920. Hoods; ovens. - A hood and hot-closet for gas and other stoves, of the type comprising an inner chamber or oven A, and an outer casing B forming flues around the bottom, sides, and top of the oven, to which the gases are led by a flue-pipe j, is provided with an outlet pipe k leading from. the top flue to the uptake l and with two dampers m, n, by means of which the gases may be carried to pass either round the oven flues or directly to the uptake. The dampers m, n may be mounted on one spindle for conjoint operation. The hood is supported on, and may be combined with, the hot-plate C. The front of the hot-closet is preferably closed by two sliding glazed panels, or by a single door hinged at the top edge and arranged so that when raised to the horizontal position it may slide in guides over the top of the oven. Reference has been directed by the Comptroller to Specification 450/99.
Patent GB-818270-A (GB)
Title: Improvements in or relating to starter drives for internal combustion engines
IPC: F02N15/06
Filed: 1957-03-19
Abstract: 818,270. Starter drives. FORD MOTORCO. Ltd. March 19, 1957 [March 19, 1956], No. 8989/57. Class 7(5) A solenoid 26 tends to hold the pinion 15 in engaged position during operation of the starting motor 25. A ratchet gear 33 permits relative rotation between the screw 13 and the shaft 18.