baber/WOPTO huggingface dataset:
Patent GB-1476322-A (GB)
Title: Acceleration control system for a vehicle
IPC: H02P5/68
Filed: 1974-05-03
Abstract: 1476322 Control of D.C. motors DUDLEY CONTROLS Ltd 3 May 1974 [4 May 1973] 21455/73 Heading H2J The left and right wheels of an invalid chair are respectively driven by permanent magnet D.C. motors 1, 2 each controlled by a transistor switching circuit 9, 10, Fig. 4 (not shown), responsive to an astable multivibrator 12 controlled by a ramp-voltage generator 11, the arrangement being such that a desired acceleration of the chair, represented by the rate of change of voltage across a capacitor C1, can be set by adjustment of a variable resistor RV and the multivibrator 12 produces progressively longer output pulses as the chair accelerates until a steady speed is reached at which its output is a constant signal, whereby the markspace ratio of the circuit 9, 10 is progressively increased until its transistor is continuously conductive to drive the chair at a steady speed, whose value is determined by adjustment of a variable resistor RS in the multivibrator. The motors are also controlled by a switch 3 and relay logic circuit 4 comprising interconnected microswitches (5), relay coils (7a-7d) and diodes (D3-D6), Fig. 2 (not shown), whereby the motors are controlled selectively or in combination to drive the chair forwards or backwards or steer it to the left or right.
Patent GB-309800-A (GB)
Title: Improvements in and relating to door locks
IPC: E05B15/12
Filed: 1928-07-24
Abstract: 309,800. Bryant, R. H. July 24, 1928. Bolts; latches, sliding; locks, preventing opera. tion of.-A latch bolt 1, or key-operated lock bolt 9 is held in shot position by a pin 7 inserted in the space between the edge of the door and the jamb, and passing through a perforation 2 provided in the bolt. Two or more perforations may be provided so that one of the series will be available to receive the pin if the bolt is imperfectly shot. The pin may be secured by a chain 8 to prevent loss.
Patent GB-1470834-A (GB)
Title: Method of and apparatus for thermochemically scarfing a work piece
IPC: B23K7/06
Filed: 1974-05-15
Abstract: 1470834 Scarfing CENTROMASKIN I GOTEBORG AB 15 May 1974 [21 May 1973] 21547/74 Heading B3V A workpiece 11 is scarfed with a burner unit 10 by continuously moving the workpiece 11 and unit 10 relative to each other so that a zone of the workpiece sequentially passes through a preheating station 1, a combusting station 2 where the thermochemical combustion of the zone is initiated and a scarfing station 3. A zone on the workpiece surface 11a is preheated by a heat source 6 comprising at least one fuel gas flame, plasma arc or electric arc between the workpiece and a non-consumable or consumable electrode. Adjuvant material in the form of wire strip or powder may be fed to the zone. The preheated area, which is preferably molten, is then supplied with at least one oxygen stream 8 which enlarges the size of the preheated area in directions perpendicular to the direction of motion 4 or 5 of the unit 10 or workpiece 11. The oxygen stream 8 has a circular or oval cross-section and makes an angle α to the vertical of 0-45 degrees. Subsequently, the scarfing process proper is carried out by scarfing oxygen streams 9 which have a circular, oval or rectangular crosssection and which are inclined at an angle # of 0-60 degrees to the vertical. A plurality of sideby-side scarfing nozzles may be provided each individually controllable so that the width of the scarfed groove may be controlled. Three units 10 may be arranged side-by-side (Fig. 4, not shown), the oxygen streams 9 from the end nozzles of adjacent units being arranged to overlap. The oxygen may be supplied in a preheated or liquid state.
Patent GB-472003-A (GB)
Title: Improvements in or relating to manifold transfer devices for use in typewriters
IPC: B41J17/00
Filed: 1936-08-05
Abstract: 472,003. Carbon sheet holders. LACROIX, G. U. Aug. 5, 1936, No. 21615. [Class 16] [Also in Group XVI] A manifolding-device for use in typewriters comprises a flexible carbon - sheet holder having an oblique forward edge and one or more carbon sheets carried by the holder. The carbon-sheet holder 1, Fig. 4, has side marginal double-ply portions 14, 15 forming flat pockets to receive tabs 12, 13 on the carbon sheets, the plies being sewn together at points 18, 19 to form means within the pockets within which hooks on the tabs 12, 13 may be engaged, the material of the holder being so thin that the combined thickness of the holder and the tabs on the carbon sheets will pass readily between the platen 23, Fig. 6, and pressure rollers 24 of the typewriter. The holder 1 is of treated cloth or other material and is folded over and stitched at the rear edge and a stiffening insert 4<1> of cardboard or celluloid is inserted in the fold 4. Secured to the fold 4 are hook-shaped guide-members 5, 6 for the copy webs and angle-shaped stops 7, 8. The forward edge of the holder is cut on oblique lines 16, 17. The carbon sheets 9, interleaved with the narrower webs of a fan-folded pack, are successively engaged. with the pockets 14, 15. The assembly is placed in the typewriter and, when the first form is typed, is fed forward until the stops 7, 8 engage the platen. The pressure rollers 24 are then released and the forms, gripped through cut-outs 11 in the carbon sheets, are drawn forward until the next set are in alignment, and are then torn off. If the holder is arranged to lie next to the platen as shown it may be extended as a backing behind the carbon sheets. If it is to lie on the side of the assembly away from the platen it is of the length shown, and the guides 5, 6 are arranged on the same side of the holder as the stops 7, 8.
Patent GB-500123-A (GB)
Title: Improvements in or relating to crematory furnaces
IPC: F23G1/00
Filed: 1937-08-06
Abstract: 500,123. Crematory furnaces. BIRMINGHAM ELECTRIC FURNACES, Ltd., and LOBLEY, A. G. Aug. 6, 1937, No. 21668. Drawings to Specification. [Class 51 (ii)] In a crematory furnace of the kind described in Specification 460,766 which includes an electrically-heated smoke combustion chamber and a recuperator for heating the primary air supply to the incinerating-chamber, a controllable supply of secondary air is admitted to the smoke combustion chamber. The secondary air may be preheated in the recuperator or may be supplied cold from a connection to the air main between the fan and the recuperator.
Patent GB-979546-A (GB)
Title: Improvements in or relating to rare earth manganite monocrystals
Inventor: BERTAUT ERWIN FELIX
IPC: C30B9/00
Filed: 1962-06-05
Abstract: Manganites of rare earths, including yttrium and lanthanum, are prepared as monocrystals by dissolving a mixture of rare-earth oxide and manganese oxide in molten bismuth oxide, supersaturating the solution by evaporation, and coding.  The oxides may be fused at above 1000 DEG  C. in a platinum crucible, and the solution is evaporated at say 1400 DEG  C. or higher.  The evaporation may be continued until crystals first appear, when the solution is cooled, e.g. at 4 DEG  C./hr. to 1200 DEG  C., and at 10 DEG  C./hr. from 1200 DEG  C.  Alternatively evaporation is continued until all the Bi2O3 is driven off, when the mixture is cooled, e.g. at 10 DEG C./hr.  Examples refer to the production of manganites of thulium, yttrium and erbium. The manganites are stated to show piezo- and ferro-electric properties, where the latter are stable between 173 and 373 DEG  K.
Patent GB-682560-A (GB)
Title: Manufacture of dimethylamino-phenyl-pyridyl-hexanols and their esters
IPC: C07D213/38
Filed: 1950-09-04
Abstract: The invention comprises carbinols of the formula <FORM:0682560/IV (b)/1> (R=hydrogen or halogen), their esters with aliphatic monocarboxylic acids (2-5 carbon atoms) and salts thereof.  The carbinols are obtained by reacting g -dimethylamino-a -phenyl-a -pyridyl-butyronitriles with ethyl magnesium halides and reducing the resulting ketones with lithium aluminium hydride or sodium borohydride.  Esterification is effected with the acids, anhydrides, halides or ketenes; the carbinols may be used in the form of their functional derivatives such as metal alcoholates.  The carbinols and esters yield salts with hydrohalic, sulphuric, nitric, phosphoric, acetic. propionic, oxalic, benzoic, salicylic, p-aminosalicylic, methanesulphonic and ethanesulphonic acids.  In examples: (1) 1-dimethylamino-3-phenyl-3-a -pyridyl-hexanone-4 is produced as above and reduced to 1-dimethylamino-3-phenyl-3-a -pyridyl-hexanol-4; the latter is esterified with acetic, propionic and butyric anhydrides; (2) 1-dimethylamino-3-(p-chlorophenyl)-3-a -pyridyl-hexanone-4 is produced as above, reduced to the carbinol and esterified with acetic anhydride.
Patent GB-737792-A (GB)
Title: Improvements relating to signalling and control systems, primarily for coal-face conveyor apparatus
IPC: E21F17/18
Filed: 1952-08-30
Abstract: 737,792. Bells. DAVIS & SON (DERBY), Ltd., J., and DAVIS, W. B. Aug. 28, 1953 [Aug. 30, 1952], No. 21849/52. Classes 13 and 118 (2). Apparatus for signalling and control purposes (primarily for use in conjunction with coal-face conveyers) comprises a pivoted lever which is rocked by a pull-wire or similar flexible connection and is operatively connected with the striker of a mechanical bell or gong and with an electrical switch mechanism such that when the wire is pulled the striker and the switch are both actuated. A base framework 10 which can be secured to a pit prop, for example, carries a bell gong 51 with striker 50 (see Fig. 4) and flame-proof switchgear 40 operable by a plunger 41. On a pivot 11 is arranged a lever 12 having pulleys 13, 14 at respective ends and a drum 16 on which is wound a pull-wire 15 shown passing to the left over pulley 13 in Fig. 1. Pulley 14 is utilized if the pull-wire has to extend to the right. The drum 16 carries a spring-loaded plunger 30 which engages with one of a series of holes in a ratchet-wheel (Figs. 2 and 3, not shown) also mounted on pivot 11 and co-operating with pawls on the lever 12 such that it can rotate freely in a clockwise sense but counter-clockwise rotation entails rotation of lever 12 against the biasing action of a spring 36. Thus by lifting up the plunger 30 the pull-wire 15 may be run out freely to its distant anchor point. Release of plunger 30 and clockwise rotation of the drum 16 winds in any slack and the drum is maintained in its final position by the ratchet-wheel and pawls. A pull on the wire 15 now rotates the drum 16 and hence (via the ratchet and pawls) lever 12 against spring 36. Arm 58 which is pivotally attached to the lever 12 (Fig. 2, not shown) moves to the right and a trigger-piece 55 (Fig. 4) abuts the collar 50a on the striker 50, moving the striker 50 to the right and compressing spring 60. Near the end of its travel the trigger-piece 55 is locked by a projection 59 and moved clear of the collar 50a. The spring 60 then urges the striker briskly into contact with the gong 51 whereupon a light opposing spring 61 ensures rebound and avoids damping of the gong resonance. The striker 50 also impinges on one arm of a bell-crank lever 45, the other arm of which presses plunger 41 to operate switch 40. A leaf spring 42 engages a reduced end portion of the plunger 41 to maintain it in the operated position until released by lifting the leaf spring 42. The switch 40 operates the main contactors of a driving motor for the coal conveyer and may in addition operate a further contactor or electrical signalling circuit.
Patent GB-846183-A (GB)
Title: A guiding device for sluice gates
IPC: E02B7/20
Filed: 1958-07-08
Abstract: 846,183. Vertically sliding sluice gates. SOC. DES FORGES ET ATELIERS DU CREUSOT S.A. July 8,1958 [July 13, 1957], No. 21851/58. Class 68(2). A vertically sliding sluice gate is characterized in that it runs in guides which are a clearance fit in slots in the side walls of the sluice and can themselves be raised out of the water. Each guide G (Fig. 1) which consists of a series of links connected by pivot pins has connected to it a length of chain which has teeth of the same pitch as the sections of the guide and passes over a toothed pulley 4 driven by a hoist mechanism 3 so that the guide and chains can be raised and stored in the boxes 25. Each section of the guide comprises two lengths of I-section guide 5 and 6 (Fig. 4) connected by a tie-bar 7 and fitted with wooden sealing blocks 8 and 9. The sluice gate is fitted with rollers 12 pivoted about axles 13. Each part 5 or 6 has drilled plates 19 and 20 fixed to it at the top and a plate 22 at the bottom which together form bearings for the axle 21. The teeth of the pulleys 4 run in the space between the plates 20 and 22.
Patent GB-317075-A (GB)
Title: Improvements in or relating to the control of fuel injection mechanism for internal combustion engines
IPC: F02M57/02
Filed: 1929-07-16
Abstract: 317,075. Sulzer FrÞres Soc. Anon. Aug. 11, 1928, [Convention date]. Addition to 274,042. Cylinders receiving liquid fuel.-In the fuelinjection device, described in the parent Specification, in which fuel from a pump a is stored in a pressure accumulator until pressure behind a plunger m is released by opening a valve e, a throttling device k substantially prevents backflow of the fuel. The pressure accumulator may comprise an annular spring-pressed plunger e.
Patent GB-1485342-A (GB)
Title: Processes for the manufacture of feed-grade dicalcium phosphate and phosphoric acid
IPC: A23K1/175
Filed: 1975-05-21
Abstract: 1485342 Dicalcium phosphate and phosphoric acid preparation ISRAEL CHEMICALS Ltd 21 May 1975 [5 June 1974] 22003/75 Heading C1A A combined process is described for the preparation of dicalcium phosphate (DCP) and phosphoric acid from rock phosphate which comprises: (a) reacting excess comminuted uncalcined (i.e., not heated above 650 C.) calcerous phosphate rock with an aqueous solution of a mineral acid selected from hydrochloric acid, phosphoric acid and nitric acid characterized in that the free acidity (as defined) of the dissolution liquor does not exceed 60%, (b) separating the clear solution from the solids, (c) precipitating feed grade DCP from the clear solution obtained in step (b) by adding Ca(OH) 2 , CaCO 3  or mixtures thereof, (d) reacting solids from step (b) with hydrochloric acid at between 16 and 120 C. to produce an acidulate containing phosphoric acid, (e) separating an acidulate containing phosphoric acid in step (d), (f) extracting the phosphoric acid obtained in step (e) with an organic solvent which is miscible with phosphoric acid but does not dissolve CaCl 2 , the solvent being selected from butanols and pentanols and mixtures thereof, thereby forming a mutually immiscible brine phase containing CaCl 2  and a phosphoric acid-solvent extract phase, (g) separating the phosphoric acid-solvent extract phase from the CaCl 2  containing brine phase, and (h) separating the phosphoric acid from the organic solvent extract phase obtained in step (g), and recycling the phosphoric acid-miscible solvent to step (f). The term "free acidity" is the percentage of P 2 O 5  solubilized as phosphoric acid (H 3 PO 4 ) based on the total P 2 O 5  in solution. The mineral acid in step (a) may have a concentration of from 2-20% by wt.
Patent GB-627676-A (GB)
Title: A continuous process for recovering starch by centrifugally separating a mixture of water, starch and gluten
IPC: C08B30/04
Filed: 1947-08-08
Abstract: 627,676. Centrifugal separators. DELAVAL SEPARATOR CO. Aug. 8, 1947, No. 22033. Convention date, Aug. 10, 1946. [Class 23] A centrifugal separator separates a starch mixture into three components, one rich in starch, a second rich in gluten and a third primarily water. The third component is returned, without intermediate storage, to the separator and is used to evacuate the first component. The third component may be similarly used in a second separator in which the first component is further treated. The starch mixture to be treated may be the tailings from standard starch tables. In the plant shown in Fig. 1, the three components are discharged, respectively, at 9, 10 and 11 from a separator 8. The water component may be returned directly to the separator through pipes 12, 13 or be passed through a purifier 16 and returned to the separator through pipe 18a. An alternative pure water supply 26 is provided. The starch component is passed to a tank 20 where it may be diluted by the water component directly or through the purifier and is then further treated in a second separator 22 in which the water component from the first separator is used as a carrier for the separated starch. The second separator may have two deliveries as shown or may be similar to separator 8. The separator 8 may comprise a pile of unperforated plates 61, Fig. 3, and a pile of plates 63 with perforations at two levels 60<SP>1</SP>, 64. The two piles are separated by a plate 62 sealed to the spindle 58. The starch concentrate is discharged through nozzles 70 being entrained by the returned water component which is directed by pipes 72. In the separation the gluten component passes through holes 64 in the plates 63 and through discharge holes 67<SP>1</SP> in an end plate 66. This component is discharged by spilling over the lip 57. The water component spills over the lip 68.
Patent GB-895387-A (GB)
Title: Improvements in or relating to padded chairs and padded packing cases
IPC: B29C44/12
Filed: 1959-06-29
Abstract: 895,387. Laminates. LENNOX-LAMB, D. C. Sept. 26, 1960 [June 29, 1959], No. 22168/59. Class 140. [Also in Groups XIV and XVII] A chair, motor-car seat, or packing-case comprises resilient padding made from an assembly of resilient pads having a backing formed in situ thereon and comprising one or more layers of a synthetic resin, such as a polyester or epoxy resin, reinforced with glass fibre or other fibrous material in mat or loose fibre form. The pads may comprise curled hair or man-made or natural fibres or mixtures thereof bonded with rubber latex, neoprene or the like, or foamed or expanded rubber, synthetic rubber, or synthetic resins such as polyethers, polyesters or polystyrene, and the synthetic resin of the backing may be so applied as to penetrate partly into the pads to bond the reinforcement thereto without destroying their resilience. The fronts of the pads may have a finished coating or covering, and the assembly may be finally shaped by moulding. A packing-case may comprise five pads, assembled to make an open box and held together by layers of glass fibre mat impregnated with liquid polyester resin, additional backing material being provided in the corners. A sixth pad similarly backed may be provided as a lid.
Patent GB-614699-A (GB)
Title: Improvements in or relating to display and dispersing devices
IPC: A47F1/08
Filed: 1946-07-25
Abstract: 614,699. Containers for displaying and dispensing articles. PHILIPSON, A. L., and SESSIONS, Ltd., W. July, 25, 1946. No. 22181. [Class 18] [Also in Group XVIII] A displaying and dispensing device for small articles comprises a vertical open fronted channel 10 formed from a single blank 11, tongues 16 forming guides being cut and bent from the side walls 17 of the channel, a base member 21 attached to vertical marginal portions 13 and having a tongue 22 which engages the back of the channel to form a sloping platform for inclining the lowermost article, the platform having a tab 25 for supporting the article. The device is made of cardboard or like material, and more than one channel may be provided. The platforms 22 are retained in position by integral tabs 23 which engage behind tongues 24 cut from the back of the channel. The channels are normally open at the top for filling but openings may be provided in the back. A supporting strut, or tabs 20 for a string, may be provided.
Patent GB-932102-A (GB)
Title: Apparatus for augmenting hoist brake capacity
Inventor: NIX EDMUND ALLEN
IPC: B66D1/14
Filed: 1960-06-24
Abstract: 932,102. Winch brakes; slewing jib-cranes. DOMINION ENGINEERING WORKS Ltd. June 24, 1960, No. 22198/60. Classes 78 (4) and 78 (5). A reversible mechanism operated by two normally alternatively-engaged clutches, e.g the slewing mechanism of a mobile crane, has provision for simultaneous engagement of both clutches for use of the mechanism as a supplementary brake on an associated hoisting drum. In a crane with two twisting drums 15, 16 (Fig. 2), on a common shaft 5 and a slewing control gear 38 driven alternatively by gears 35, 36 on a shaft 4, the two shafts 4 and 5 are coupled by gears 12, 13 and the former is driven, through transmission 3 and clutch 9, by a motor 2. Further mechanism, e.g. traversing mechanism, may also be coupled to that shown. Each drum is clutchable to its shaft 5 by a clutch 22 and each has its normal brake 18. Each gear 35, 36 also has its respective friction clutch 46, 47. The clutches and brakes are all operable in a conventional manner for normal lifting, lowering &c., but in use, if the supplementary braking, clutches 22, 46, 47 are all engaged and clutch 9 disengaged. To enable clutches 46, 47 to be engaged together the hydraulic control of Fig. 7 may be employed. In this, lever 69 of double valve 68 is operable to supply pressure fluid to one or other of clutch-operating cylinders 50, 50a. Operation of lever 91 of valve 66, however, shuts-off both cylinders from valve 68 and energizes them both simultaneously. An equivalent lever-operated mechanical linkage control system (Fig. 8, not shown), is also disclosed.
Patent GB-617161-A (GB)
Title: Method and apparatus for sand blasting
IPC: B24C3/06
Filed: 1945-08-29
Abstract: 617,161. Sand-blast. MEAD, W. H. Aug. 29, 1945, No. 22282. [Class 60] Apparatus for sand-blasting surfaces comprising means for applying a stream of air mixed with particles of sand against the surface and means for impeding movement of sand beyond a confined area, is characterized in that the latter means permit the air from the surrounding area to flow therethrough. The operating head 31, Fig. 1, has an inner shell 72, Fig. 4, through which the sand-blast passes on to the work, and an outer casing 75 connected to a suction line 45; the rim 79 of the casing is spaced from the work surface by adjustable feet 83. A brush or other porous, easily flexed, maze-like baffle member 84 bears on the work surface; a flexible boot 85 may also be provided. This arrangement serves to confine spent abrasive and debris to the working zone; they are carried up the tube 45 to a cyclone separator 41, debris being collected in container 44, abrasive in a hopper, and dust in a filter 39. Abrasive can pass from the hopper to chamber 30 through a valve 65 which normally opens under its own weight plus that of the abrasive; compressed air is supplied through pipe 26 to the top of the chamber 30 to maintain the abrasive therein under pressure to assist its feed into the compressed air stream. Pressure air also passes through connection 29 to hold the valve 65 closed. The compressed air passes through a slidable tube 50, Fig. 2, urged by a spring against a fitting 47, thus scouring out the pipes and blast nozzle; pressure passes through a bleed port 63 in the tube 50 and when it has built up sufficiently, moves the tube 50 back against the spring, thus opening up a gap for the i admission of sand. The compressed air is controlled by a valve 23 electrically controlled by a switch 71 on the operating head 31 and by a switch which is normally opened but which is closed by contact of the operating head with the work surface.
Patent GB-516850-A (GB)
Title: Improvements in or applicable to spring seats
IPC: A47C23/053
Filed: 1938-07-27
Abstract: 516,850. Spring seats. KEEBLE, D. July 27, 1938, No. 22286. [Class 52 (iv)] The upholstery springs A of a spring seat, mattress or the like have their bases or plates F to which they are attached secured to each other and to the supporting frame B by springs C in compression. Various arrangements are described and, as shown, the springs A have secured to their bases links D, E passing through and secured to the remote ends of the supporting springs C so that when the links are pulled apart by the upholstery springs A the springs C are put under compression.