baber/WOPTO huggingface dataset:
Patent GB-288958-A (GB)
Title: Improvements in or relating to dental chairs
IPC: A61G15/10
Filed: 1927-06-21
Abstract: 288,958. Ritter Dental Manufacturing Co., Inc., (Assignees of May, A. J.). April 16, 1927, [Convention date]. Rests, foot; adjustments.-A foot-rest for dental and like chairs comprises a fixed foot-board section 18 on which slides a carriage 26, pivotally carrying an angularly adjustable toe-board 19, together with means, operable by the pedal lever 51, for actuating and controlling the carriage and the toeboard. The carriage has bearings 35, 36 running on fixed guides 80, and pivotally carries, at 40, brackets 27, 28, 39 which support the toe-board 19. The angular position of the toe-board is determined by the spring-pressed detent 45, pivoted at 44 to the member 28, and doubly notched at its rear end to engage a keeper 46 on the carriage. The actuating pedal lever 51 is pivoted at 51<a> to a lever 52, itself pivoted on a bolt 53 secured to the carriage 26, and is further connected, by the link 61 and heads 60. 62, to an arm 63, keyed to the shaft 40. When the pedal is depressed, the shaft 40 is rocked, and the finger 70 releases the detent 45, allowing the toe-board to be adjusted to a horizontal position. On again depressing the pedal, the parts 83, 84 contact, raising the toe-board and freeing the detent which, however, re-engages the keeper 46 when the pedal is released. A bolt 86, actuated by a plate 90 on the shaft 40, is adapted to engage a recess 87 in the foot-board casting, thus locking the carriage and the toe-board thereon in its outermost horizontal position, so that the toe-board cannot be moved longitudinally until it has been raised from lowered position. Means for locking the carriage in any position of horizontal adjustment comprise a U-shaped clamp 92 surrounding a guide-rod 30. When the pedal lever 51 is swung around the pivot 53, the pins 106 act upon the fork 102 and rod 100, turning the lever 98 and lifting the cam 97, thus allowing the jaws of the clamp to open and the carriage to be moved horizontally. On releasing the pedals, the spring 108 returns the lever 98 and the clamp again engages the rod 30.
Patent GB-480739-A (GB)
Title: Process for the production and recovery of molybdenum
IPC: C22B34/34
Filed: 1937-06-15
Abstract: Molybdenum is recovered from liquids containing molybdenum anions, obtained for example from molybdenum ores or spent catalysts, by intimately contacting the liquid with lead sulphate and then mechanically separating the solids from the liquid, e.g. by filtration, centrifuging or sedimentation.  The lead sulphate is suitably stirred with the warm or hot liquid.  Finely divided lead sulphate is preferably employed, and it may be produced in the liquid by the addition of a soluble lead salt such as the chloride or nitrate, and sulphuric acid.  The quantity employed usually corresponds to 5-10 times or more the weight of the molybdenum present.  The hydrogen ion concentration of the solution corresponds to a pH value of about 2,5-7,5.  When the liquids to be treated are weakly alkaline, for example, when they are obtained by extraction of spent catalysts with ammonium carbonate according to Specification 459,554, the hydrogen ion concentration is first adjusted by addition of sulphuric acid. If the sulphate ion concentration of the solution is above 2 grms. per litre, the precipitation is effected after addition of ammonium carbonate, a concentration of at least 5 grms. per litre being advantageous.  The treatment may be effected in a counter-current manner, solutions nearly freed from molybdenum being contacted with fresh lead sulphate, and untreated solution being treated with lead sulphate charged with considerable quantities of molybdenum.  When the molybdenum content of the lead sulphate reaches 20 per cent or more, it is recovered by extraction with sulphuric acid of, say, 10-50 per cent strength. The solutions thereby obtained may be used for impregnating coal or other solid carbonaceous materials which are to be destructively hydrogenated according to Specification 467,117. The molybdenum need not be completely extracted from the lead sulphate, which is re-employed.  The acid may be used for successively extracting several batches of the lead sulphate.  Two examples are given.
Patent GB-674904-A (GB)
Title: Improvements in and relating to collapsible tubes
IPC: B65D45/04
Filed: 1949-06-22
Abstract: 674,904. Nozzles of collapsable tubes. GESTETNER, Ltd., and GESTETNER, S. June 1, 1950. [June 22, 1949]. No. 16605/ 49. Drawings to Specification. Class 66 A collapsable tube nozzle and delivery adjunct which may include a pump as disclosed in Specification 655,550 has also a resilient rubber or like washer at the end of the nozzle to prevent distortion of the nozzle end on attaching the pump &c. and ensure a satisfactory seal on replacing the same after removal. The washer may be conical.
Patent GB-233563-A (GB)
Title: Telephone attachments for phonographs and the like
IPC: H04R11/00
Filed: 1924-07-11
Abstract: 233,563. Dubilier Condenser Co. (1921), Ltd., (Deventer, H. R. van). July 11, 1924. Loud-speakers; magnetic instruments.-In an attachment to a phonograph of the kind in which the diaphragm thereof is connected to the diaphragm of a telephone receiver 7 to constitute a loudspeaker the receiver is provided with a cap member 8 adapted to hold the diaphragm of the receiver in position and at the same time to form a. support for the entire receiver. The cap 8 may be secured to or formed integral with a foot portion 9 and means such as screws may be provided for adjusting the height of the receiver above the record table.
Patent GB-212806-A (GB)
Title: Improvements in and relating to vibrating sieves
IPC: B07B1/38
Filed: 1923-06-28
Abstract: 212,806. S÷rensen, G. R. B. June 28, 1923. Sieves with compound motion. - In sieves of the type which are actuated by a shaft 9 mounted in bearings 1.0 in a fixed frame 4 and having an intermediate eccentric part mounted in bearings 11 on the sieve frame 2, the sieve cloth or plate 1 is attached to the frame 2 by tensioning screws 3 or the like so as to leave, between it and the bottom end of the frame a discharge opening for the tailings, and the frame 2 is attached to the rigid frame 4 by means of bolts 5 with interposed springs 6. The frame 4 is adjustable about the shaft 7 and its lower end rests on adjustable supports so as to vary the inclination of the sieve.
Patent GB-222213-A (GB)
Title: Improvements in or relating to bag corner sewing and like operations
IPC: D05B13/00
Filed: 1923-06-28
Abstract: 222,213. British United Shoe Machinery Co., Ltd., Ricks, F., and Woodcock, R. B. June 28, 1923. Leather and like bags and cases, stitching; rotary horns. - A curved-needle lockstitch machine adapted for sewing bag corners &c. is provided with a rotary horn having a work entering element which is adjustable about its tip transversely to the direction of horn rotation. A curved horn 10 is carried by a block 13 supported rotatably on an axis 15 in the manner described in Specification 198,430. A bracket 7 which may be clamped in adjusted position along the horn 10 carries a work entering arm 4 having a ball-end 3 on which is mounted a work-engaging roll 1 which coacts with an external work-support 2. Collars 11 may be adjustably mounted on the horn to assist the rapid positioning of the arm 4.
Patent GB-497354-A (GB)
Title: Improvements in and relating to the control of synchronous dynamo-electric machines
IPC: H02P1/46
Filed: 1937-06-17
Abstract: 497,354. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. June 17, 1937, No. 16903. Convention date, June 17, 1936. [Class 38 (iii)] Excitation of a synchronous machine 1 is effected when the speed of the machine reaches a predetermined value, under the control of relay means operating in response to the frequency of current variations produced in an alternating current circuit by means of an impedance device 11, the impedance of which is varied periodically at a rate proportional to the speed of the machine. Upon closure of a circuit-breaker 4 a synchronous motor 1 is started with its field winding 5 connected to a discharge resistance 8. The motor rotates a magnetic member 13 between the ends of a magnetic core 12 on which a coil 14 is wound, and the periodic variation of the impedance of the coil is initially such that the armature 16 of a relay 15 energized from the motor supply 3 through the coil 14, vibrates at a rate proportional to the speed of the motor. The vibrations of the relay armature 16 effect continuous reversals of the current flowing from a source 19 to the primary winding 17 of a transformer 18, and a relay 22 energized from the secondary 20 of the transformer 18 through a rectifier 21 receives current pulsations at a frequency proportional to the speed of the motor. At low speeds the frequency of these current pulsations is such that the relay 22 does not operate, but when a predetermined motor speed is reached the relay closes and energizes a relay 26 which closes and maintains itself over contacts 27. At a speed still nearer synchronism the frequency at which the impedance of the circuit of the energizing coil of the relay 15 varies, is such that the relay armature 16 ceases to vibrate. Thus the relay 22 is de-energized and completes at contacts 28 a circuit for a field switch 7 which operates to connect the motor field to its supply and interrupt the closed circuit through the resistance 8. The arrangement is particularly applicable to a totally enclosed machine such as a hydrogen-cooled synchronous motor, the impedance device 11 being contained within the gas-tight container 10.
Patent GB-1216050-A (GB)
Title: Cam adjustment apparatus for a circular knitting machine
IPC: D04B15/32
Filed: 1969-04-01
Abstract: 1,216,050. Cams. SINGER CO. 1 April, 1969 [11 April, 1968], No. 16923/69. Heading F2K. [Also in Division D1] A stitch case 48 is moved longitudinally against spring action by a projection 54 of a pivoted bell-crank 56. The crank is turned by a push-rod 218 contacting a screw head 220. The screw is held in position by a spring arm engaging serrations 62 in the head, and indicating the setting with reference to indicia on the face.
Patent GB-561030-A (GB)
Title: Differential mechanism
IPC: F16D41/00
Filed: 1942-11-30
Abstract: 561,030. Differential mechanism. THORNTON TANDEM CO. Nov. 30, 1942, No. 17013. Convention date, June 8, 1942. [Class 80 (ii)] A driving spider 14 has a plurality of annular rows of clutch teeth 14<1> which co-operate with clutch teeth 15<1> on a pair of driven clutch members 15. The latter are spaced by a cage' 24, 25, secured centrally within the spider 14 and having balls 27 co-actable with cam recesses 34 in the adjacent faces of the clutch members 15. Sleeves 16 are splined to the members 15 and the driven shafts 10, 11, and springs 21 arranged between plates 22, 23, urge the members 15 towards one another. There is a circumferential clearance between the clutch teeth 14<1>, 151. A sleeve 35 with flared ends holds the parts together as a unit. In operation, if one shaft, say 11, tends to over-run the other, the cam recesses 34 in the corresponding clutch member 15 co-act with the balls 27 and the member 15 is moved axially, as shown to the right of the Figure, to disengage' the clutch teeth 14<1>, 151. The balls 27 and recesses 34 may be replaced by camming projections.
Patent GB-263051-A (GB)
Title: Improvements in and relating to spring mattresses and like resilient surfaces
IPC: A47C27/06
Filed: 1926-07-07
Abstract: 263,051. Newborn, J. T., and Marshall Patent Mattress Co., Ltd. July 7, 1926. Spring surfaces. -The end coils of upholstery springs are of substantially square outline and the end x of the wire. is left free. The springs are connected together by clips at their corners a<1> which are set or bent outwardly to provide a seating for the clip.
Patent GB-440783-A (GB)
Title: Improvements in earth leakage protective systems for electric mains or apparatus
IPC: H02H3/38
Filed: 1935-06-13
Abstract: 440,783. Protective cut-out systems ; inductive relays. FRYDENLUND, C., 36B, Italiansvej, Copenhagen. June 13, 1935, No. 17109. [Class 38 (v)] An arrangement for the protection against leakage of a transmission line or apparatus connected to an A.C. supply comprises two cores 1, 5, one having a winding 2 connected across the supply and the other having a balanced phase winding 6 in series with the supply, an induction disc 7 between the cores moving when a fault occurs to complete first a signal circuit, and then, if the fault is sufficiently large, the operating circuit of a circuit breaker. The spindle 8 carries a contact 11 which on the occurrence of a slight fault is moved in one direction or the other to contact with a lever 14 and complete the circuit of a signal device 21 such as a glow discharge tube. If the fault is fairly large sufficient torque will be produced to rock the lever 14 and close contacts 16, 17, completing the circuit of a circuit breaker coil 18. Under normal conditions the armature is moved to a particular position by a magnetic brake 27, 28. In a three-phase arrangement two sets of cores and coils are provided which may operate either on opposite sides of the disc 7 or may operate on separate discs on the same spindle. A single set of current or voltage coils may be used if the connections are arranged as in Fig. 3 or 4 (not shown). In a further modification, three voltage windings connected in delta are provided. With this arrangement the disc rotates in one direction only and only one set of contacts is needed.
Patent GB-704143-A (GB)
Title: Process for the treatment of fabrics with resinous condensation products
Inventor: MARSH JOHN THOMPSON
IPC: D06M15/39
Filed: 1950-07-08
Abstract: Fabrics composed wholly or partly of regenerated cellulose are crease-proofed without any reduction in their abrasion-resistance by impregnation with a solution of urea-formaldehyde resin-forming ingredients containing an acidic catalyst and then heating, e.g. at 130 DEG -180 DEG C, in an atmosphere containing not less than 20 per cent of superheated steam to insolubilize the resin.  Prior to the heating operation, the impregnated fabric may be subjected to mechanical finishing effects, e.g., calendering, Schreinering, embossing, glazing, pleating and mechanical shrinking.  With a fabric containing nylon in addition to regenerated cellulose, the heating operation also serves to set the nylon.  The catalyst may be an acid or a substance capable of becoming more acid or liberating acid during the treatment, specified catalysts being ammonium thiocyanate, ammonium dihydrogen phosphate, aluminium chloride, a mixture of calcium chloride and boric acid and aluminium acetate.  When ammonium salts are employed as catalysts, natural or synthetic rubber latices may be incorporated in the reaction mixture.  Water repellents such as stearamidomethyl- and octadecyloxymethyl-pyridinium chloride, the polysiloxanes described in Specification 695,703 and wax emulsions may also be incorporated in the reaction mixture.  Specifications 437,642 and 449,243 also are referred to.  In the first Provisional Specification, the process is said to be applicable to cotton fabrics and also to non-cellulosic fabrics and, in addition to urea-formaldehyde resins, melamine-formaldehyde, phenol-formaldehyde and cresol-formaldehyde resins may be used. It refers also to Specifications 291,473 and 291,474 [both in Class 2(iii)]
Patent GB-401785-A (GB)
Title: Improved kettle
IPC: A47J27/21
Filed: 1932-06-17
Abstract: 401,785. Kettles. MOLYNEUX, S. W., 49, Knatchbull Road, Camberwell, London. June 17, 1932, No. 17160. [Class 66.] The flange B of the removable top portion A of a kettle is formed at spaced intervals with internally beaded portions C adapted to pass between and on turning of the top to engage beneath sloping ridges E spaced around the upper part of the body portion so that the top is drawn down tightly into contact therewith. A rubber, fibre or like washer adapted to be engaged by the edge of the body may be disposed in an annular groove formed at the edge of the top. The top may have an opening fitted with a lid L.
Patent GB-673577-A (GB)
Title: Improvements in insulating shields for cathode ray tubes
IPC: H01J29/86
Filed: 1950-07-11
Abstract: 673,577. Cathode-ray tubes. FISCH, R. A. July 11, 1950 [July 12, 1949], No. 17366/50. Class 39 (i). A cathode-ray tube of the metal-backed type is shielded by an insulating skirt 20 held into position by a flexible split ring 30 having an inner annular groove 32 to clamp the shield to the tube, and an outer annular groove 34 for a clamping band. The ring has a tongue 61 to cover the join between the two ends. A press-stud contact 43 on the shield is clamped into contact with the metal back of the tube.
Patent GB-292911-A (GB)
Title: Improvements relating to methods and apparatus for the centrifugal treatment of substances
IPC: B04B11/02
Filed: 1928-06-15
Abstract: 292,911. Sharples Specialty Co., (Assignees of Jones, L. D.). June 25, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Density separators; discharging.-A substance discharged in a dispersed condition from a centrifugal machine is brought into contact with vapours of the substance thus discharged, or with a gas substantially saturated with those vapours. In the apparatus shown in Fig. 2, the separator drum 1 discharges one constituent of the supplied material through the openings 3 into the cover chamber 5 from which it passes through the spout 5<e> to the receiver 21. To prevent air from being drawn in at the space 13 between the neck of the bowl and the cover plate 5<c>, an enclosing member 16 is arranged between the bearing support 7 and the cover plate. The member 16 rests upon packing 17 in a grooved member 18 on the cover plate, and is clamped by a screw connection 20 between the upper member 19 and the bearing support 7. The member 16 consists of two parts hinged together; the two ends away from the hinge are drawn together and secured by clamps with a screw adjustment. The chamber enclosed by the member 16, and the lower cover chamber 4 are connected by ducts 22, 4<e> respectively to the receiver 21. Any gas or vapour with the discharged material passes through the spout 5<e> to the receiver 21 and is again conducted by the ducts 22, 4e to places, such as the spaces 13, 14 at which air or gas would normally flow into the machine. Any suitable gas or vapour may be supplied by external means through the gas cock 33.
Patent GB-108791-A (GB)
Title: Improvements in or relating to Cloths or Covers (generally known as Rugs) for Animals.
Inventor: O'BRIEN THOMAS
IPC: A01K13/00
Filed: 1916-12-04
Abstract: 108,791. O'Brien, T., and McLoughlin, J. Dec. 4, 1916. Clothing for animals; fastening.-The cover 1, which may be provided with a lining 2, is made to fit the contour of the animal's back, preferably by folding it longitudinally and stitching it along the fold. The part 4 is cut away to accommodate the neck of the animal. The cover is secured over the shoulders and breast by a strap 5 and buckle at 5<1> and to the body by a cord 8 fastened at one end to the inside of the cover at 6 near the lower front edge and removably attached at the other end 9 to the cover near the opposite edge. The cord passes through loops at 7, 7 and eyelets 7', 7<1>. Previous to fastening the end 9, the cord is passed under the animal's body, round the length of cord on the opposite side, and back again under the body.
Patent GB-592976-A (GB)
Title: Improvements in turret tool posts for lathes and like machine tools
IPC: B23Q16/10
Filed: 1944-09-12
Abstract: 592,976. Turning. MARK, E. R. Sept. 12, 1944, No. 17397. [Class 83 (iii)] A turret tool post for lathes &c. comprises a base with an upstanding post integral therewith, a turret block rotatably mounted on said base and post, means projecting upwardly from the base for engaging the block and a nut, rotatably engaging threads on the post, loosely engaging said block for rotation and limited axial movement relative thereto, and means on the block adapted to be engaged by the nut for lifting the block out of engagement with the base after predetermined rotation of said nut in a direction to disengage the threads on said post. The base 15 is clamped to a tool slide 14 and has an integral port 16 threaded at its upper end for engagement with a nut 18 forming part of a hand lever 36. The foursided block 22 with tool recesses 24 and clamping screws 25 is rotatable about the pillar and carries a cover 29 which overlaps a flange 28 provided on the nut 17, a small clearance 35 being provided between the lower face of the cover and the top of the flange. This clearance is of such predetermined amount that on rotation of the handle 36 in an anticlockwise direction one quarter of a turn, the clamping pressure on the block is released and the clearance is taken up ; on continued movement up to one complete turn, tapered recesses 41 in the block 22 are lifted clear of co-operating studs 38 provided on the base for locating the tool block. Subsequent rotation of the handle 36 for a quarter of a turn in the reverse direction automatically indexes the block a similar amount through the engagement of spring- pressed detents 46 with recesses in the nut. Spring-pressed detents 64 in the block engage the base to hold the block against rotation until the detents 46 engage the recesses in the nut. The next pair of tapered recesses are then in position to be engaged by the upstanding pins 38 and the block is held against rotation for the remainder of the clamping movement of the operating handle. The tapered inserts 41 may be replaceably secured by socket screws or may be in the form of socket screws themselves to provide adjustment for wear.
Patent GB-102724-A (GB)
Title: Improvements in or relating to Bevel Gear-wheels.
IPC: B23F5/20
Filed: 1916-12-05
Abstract: 102,724. Aktiebolaget Svenska Kullagerfabriken. Dec. 16, 1915, [Convention date]. Toothed wheels.-A pair of bevel gear-wheels each have the top surfaces of the teeth and the bottoms of the gaps between the teeth lying on cones, the apexes of which are respectively below and above the apex 4 of the pitch-cone, and at such a distance from it that the top surfaces and the bottoms of the gaps are of the same width throughout. This design enables the teeth to be cut by one operation of a milling or planing tool 2 of truncated-wedge shape, which is advanced in a straight line intersecting the pitch-cone. The imaginary circle 3 at which the sides of the cutter would meet if produced advances along a line passing through the apex 4, with the result that the sides of the teeth of the generating-wheel lie on planes passing through the apex. A second bevel-wheel to gear with the generating. wheel is formed by a cutter having the section of one of the teeth of the wheel 1, which in addition to advancing, is rolled in a manner similar to the rolling engagement of two bevel teeth.
Patent GB-111360-A (GB)
Title: Improvements in Steering Gear for Vehicles.
IPC: B62D7/00
Filed: 1916-12-06
Abstract: 111,360. Marks, E. C. R., (Mercury Manufacturing Co.). Dec. 6, 1916. Steering-gear; deflectable axle-ends and intermediate connexions therefor.-The arms 12 are connected by adjustable links C, D to a cross-head 19 on an arm 18 carried in bearings 16 and keyed to an operating-arm 17. The arm 17 is cranked forwardly and rides between the arms of a forked member 41 carried by the steering post 43. The cross-head 19 is provided with ball projections which ride in adjustable spring bearings in the links C, D. The links C, D are formed in two parts provided with interengaging screw-threads by means of which their lengths can be adjusted, locking-nuts 24 being provided.