baber/WOPTO huggingface dataset:
Patent GB-121949-A (GB)
Title: Construction of and Method of Assembling Ball Bearings with Distance Pieces between the Balls.
IPC: F16C33/372
Filed: 1918-12-23
Abstract: 121,949. Aktiebolaget Svenska Kullagerfabriken, (Assignees of Janson, A. J. G.). Dec. 24, 1917, [Convention date]. Ball bearings.-In a ball bearing having filling-notches 7 in the two race rings and non - resilient spacing-pieces 8 between adjacent balls, the last ball 5 and the two adjoining spacing-pieces are introduced together by applying pressure to the ball, so that the pieces 8 turn around the last ball and also around the balls previously introduced. The spacing-pieces 8 are recessed on both faces. The play of the balls is adjusted by inserting alternative pieces 8 of different thickness.
Patent GB-729827-A (GB)
Title: Improvements in or relating to feedback amplifiers
Inventor: LAWTON JOHN
IPC: H03F1/36
Filed: 1952-08-27
Abstract: 729,827. Valve amplifying circuits. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Aug. 6, 1953 [Aug; 27, 1952], No. 21561/52. Class 40 (6). A multi-stage feedback amplifier is provided with two negative feedback loops, the final amplifier stages being included in both loops: the circuit parameters are so chosen that the loop gain of the outer feedback loop is substantially unity in the region of the cut-off frequency of the inner loop. The Specification gives a mathematical demonstration, showing that an amplifier designed in this manner can provide a greater bandwidth for a given degree of stability and feedback on the final stages, as compared with a single-loop amplifier; alternatively, a greater amount of feedback is permissible. The extension to amplifiers with three or more loops is also envisaged.
Patent GB-421992-A (GB)
Title: Improvements in or relating to the manufacture of metal tubes and tubular articles
IPC: B21C1/26
Filed: 1933-08-01
Abstract: 421,992. Making tubes. WELLMAN SEAVER ROLLING MILL CO., Ltd., and SMITH, S., Victoria Station House, Victoria Street, London. Aug. 1, 1933, Nos. 21591/33 and 11194/34. [Classes 83 (ii) and 83 (iv)] In making tubular metal bottles by forcing a mandrel partly through a billet and then removing the closed end of the billet container so that the mandrel can push the billet through a series of ring dies to reduce it, the heated billet 51 is placed in a hopper 23a and pushed into the special container by the mandrel 3, operated by hydraulic cylinder 18. Fluid pressure cylinder 33 then advances the wedge 27 to raise the bottom half 26 of the container against the billet. Fluid pressure cylinder 20 then forces the mandrel 3 into the billet until near its bottom end. The end halves 38, 39 of the container are then slid aside by fluid pressure cylinders 48, and the lower half 26 is dropped. The electric motor 11 is then started to drive the mandrel rack 5 forward so that the mandrel and bottle 52 is passed through the reducing die rings 22. The speed of the rack 5 and its pinion 8a is determined by the gear box 10. The motor 11 drives the hydraulic pump 13 supplying the air hydraulic accumulator 14 for the various cylinders. The rods 50 take the longitudinal thrust. Specification 300,288, [Class 83 (iv)], is referred to.
Patent GB-823253-A (GB)
Title: Improvements in or relating to mine winders or the like
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: G01G19/18
Filed: 1956-07-12
Abstract: 823,253. Control of A.C. motors; controllers. GENERAL ELECTRIC CO. Ltd. July 3, 1957 [July 12, 1956], No. 21619/56. Class 38 (3). Accurate levelling of a multi-deck, doublecage winder driven by an A.C. motor is afforded by measuring the load when the brakes are applied and subsequently controlling the motor in accordance with such measurement. The load is determined by displacing the rope 1, at a point between sheave 3 and drum 4, in a direction perpendicular to the normal direction of movement of the rope and thus displacing the cage 2 a short distance vertically. A displacement member 8, having an adequate radius of curvature, is connected to piston 10 associated with a contact 12 moving over potentiometer 13. An actuating piston 14 pumps oil into cylinder 11 and is coupled with contact 17, the position of which on potentiometer 18 is dependent upon the displacement-force. The potentiometers are connected in cascade to provide an output voltage proportional to the final force of displacement divided by the distance, and this voltage is applied to the coil 19 of a polarized relay 20 to afford a measure of the load. A reversible regulating motor 27, which drives face-plate controllers 39, 40, to vary a speed-control signal for the winder motor, is made to run in one direction or the other, or to stop, in accordance with the position of relay 20. An induction regulator 41 is driven by the motor 27 and supplies a re-setting voltage to the coil 19 in opposition to the voltage derived from the potentiometers 13, 18, the magnitude of the re-setting voltage being determined by the position of the regulators 39, 40, so that, when the said position is the chosen one for a predetermined load, the relay 20 is de-energized. The stopping impulse provided by the relay 20 to the motor 27 is given a fixed time interval before the actual balance between the load-measuring and resetting voltages is reached, to prevent overshooting. For this purpose, the relay is provided with a bias winding 21 the excitation of which changes sign when the motor 27 is reversed, and which is switched off in the neutral position of the relay 20. Specifications 785,478 and 798,760, [Group XXX], are referred to.
Patent GB-313793-A (GB)
Title: Improvements in extensible garment racks or rails for use in wardrobes and the like
IPC: A47B61/02
Filed: 1928-07-26
Abstract: 313,793. James, J. H. July 26, 1928. Garment racks.-In a pull out rail for suspending garments in a wardrobe &c. the guide member secured to the top of the wardrobe consists of a slotted strip 5 provided at each end with integral bent up portions 7, to form attaching parts, the front portion having a hole to receive and guide the top bar 4 of a sliding frame, the rear part 2 of which slides along the longitudinal slot 10 in the guide member. In the construction shown the sides of the strip 5 are bent up to form a channel section. The frame consists of a suitably bent length of rod, the rear part 2 having a reduced portion which passes through the slot 10 and is riveted to the top bar 4. A washer 11 may be provided. In a modification the strip is longitudinally corrugated for strength, in which case the edges are not bent up to form a guide of channel section. The bottom bar 1 of the frame may be of a wave formation.
Patent GB-1031049-A (GB)
Title: Lung ventilating equipment
IPC: A61M16/00
Filed: 1963-05-30
Abstract: 1,031,049. Artificial respiration apparatus. AIR-SHIELDS Inc. May 30,1963 [Feb. 5, 1963], No. 21678/63. Heading A5T. Artificial respiration apparatus comprises a collapsible reservoir 20 for connection with the lungs, the reservoir being alternately collapsed and expanded by the supply of compressed gas to a chamber 32 surrounding the reservoir and a control device 38 which establishes the cycle of operation of the compressed gas and includes a valve 138 (Fig. 9 not shown) for separately and independently adjusting the expiratory phase of the equipment. Air or oxygen and if desired an anaesthetic gas is supplied to the patient through a supply and absorber unit 25 connected by inhalation and exhalation tubes 27, 28 to a mask or tracheal tube. A breathing bag 20 connected in the patient circuit is alternately collapsed and expanded to induce inspiration and expiration by the supply of gas to and withdrawal of gas from a transparent chamber 32 surrounding the bag 20. The chamber 32 receives gas from a source 42 through a valve 40, the controlling chamber of a normally closed dump valve 39b, a controller 38, ducts 37, 38 and a valve 35. When the controller causes the gas supply to the chamber to cease to permit expansion of the bag in the expiratory phase, gas under pressure is supplied through the controller to a chamber 49 to cause opening of a dump valve 48 so that gas in the chamber is vented to atmosphere via the valve 35, valve 48, an outlet duct 53 and a flap valve 54. During the expiratory phase a negative pressure may be developed in the chamber 32 by the passage of operating gas from a nozzle 61 through a venturi 62 which communicates with the outlet duct 53. Relief valves 69, 70 are associated with the outlet duct and the operating gas supply, respectively. A diaphragm valve 56 between the breathing bag and the operating gas supply has a control chamber communicating with the chamber surrounding the bag so that when the pressure in the bag exceeds that in the chamber during expiration, breathing gas is vented into the operating gas circuit and thence to atmosphere through the dump valve 48 and the flap valve 54. In the event that the operating gas supply fails so that the dump valve 48 remains closed, the dump valve 39b opens so that the bag can be vented to atmosphere. A tube 29 connecting the patients breathing mask or tube to the breathing circuit is connected via a control device 67 and ducts 66a, 66 to the controller 38 so that in the event that pressure in the tube 29 is reduced due to an inspiratory effort by the patient the controller is switched over to inspiratory operation. The apparatus may attenuatively be operated manually by a bag 71 to which air or other gases may be supplied, the breathing bag being vented during expiration through the valve 56 and an axial passage 72 in the valve 35 which is set to cut out the automatic operating circuit.
Patent GB-775247-A (GB)
Title: Improvements in or relating to electric pull-switches
IPC: H01R33/955
Filed: 1955-07-27
Abstract: 775,247. Lamp-holders. GENERAL ELECTRIC CO. July 27, 1955 [July 29, 1954], No. 21725/55. Class 38 (1). [Also in Group XXXVI] A lamp holder combined with a switch (see Group XXXVII) has a two-part body 21, 22 which is held together by clips 28 and a screw 32. The fixed contact 36, of the switch is connected to a centre contact 31 of the lamp and is located in a recess in a wall 51. The side contact 30 is arranged in a recess in the threaded part 23 of the holder and is connected to the supply at 33.
Patent GB-297929-A (GB)
Title: Improvements in and relating to rollers
IPC: D06B23/02
Filed: 1927-08-18
Abstract: 297,929. Macintosh & Co., Ltd., C., and Brazier, S. A. Aug. 18, 1927. Rollers for use in dyeing, printing, &c. have a rubber surface beneath which are alternate sleeves of fabric and rubber.
Patent GB-517759-A (GB)
Title: Improvements in door closing and checking appliances
IPC: E05F3/10
Filed: 1939-02-07
Abstract: 517,759. Door-operating appliances. ROWLEY, Ltd., W., and SANEY, J. Feb. 7, 1939, No. 21803. Divided out of 512,126. [Class 65 (i)] In. door-operating appliances of the kind comprising a vertical spindle 14 connected to the door, and adapted, when the door is opened, to displace a thrust member against spring action tending to close the door, such closing being retarded by a fluid check device, rotation of the door spindle causes axial movement of the check piston 42 and cylinder 43 relatively to one another and to the housing 5. The thrust member 18 is actuated by crank pins 16 on the spindle 14, and acts on the springs 32 through levers 22. The check piston 42 is actuated by a crank pin 17, and the cylinder 43 moves oppositely to the piston with the thrust member 18 and may be formed therein. During the opening of the door, fluid enters the cylinder through a valve 48, and during the closing movement the fluid escapes at first through a port 47 and then through an adjustable port 44.
Patent GB-1336091-A (GB)
Title: Thread brake for textile machines
IPC: B65H59/22
Filed: 1972-05-10
Abstract: 1336091 Tensioning yarns LINDAUER DORNIER GmbH 10 May 1972 [24 June 1971] 21839/72 Headings DID and D1E A thread tensioning device comprises two leaf springs 10 adjustably pressed towards each other, the leaf springs being mounted in rotatably coupled holders. The coupling between the spring holders can be by means of gear wheels on the holders. The tensioning device can be used in a shuttleless loom or a winding frame.
Patent GB-403334-A (GB)
Title: Improvements in or relating to syphonic flushing apparatus
IPC: E03D5/092
Filed: 1933-08-04
Abstract: 403,334. Siphon-discharge waterwaste-preventers. CLAUGHTON BROS., Ltd., and CLAUGHTON, W. G., Mill Lane, Bramley, Leeds. Aug. 4, 1933, No. 21898. [Class 26.] In a siphon-discharge water-waste-preventer of the piston-and-cylinder type, wherein the piston-rod 5 is actuated from a handle 8 carried by the cistern wall through lever-and-link mechanism taking the form of a crank 6 and a connecting rod 7 attached to the piston rod, the fulcrum of the lever 4 which connects the rods 7 and 5 is disposed on that side of the siphon remote from the cylinder, thereby permitting the lever 4 to be made of maximum length so that a substantially rectilinear movement is imparted to the piston rod. To provide for adjustment, the rod 7 screws into a forked member 7x which is pivoted to the lever 4 and the crank 6 is movable along the handle-shaft 9 a screw 10 being provided to secure the crank in the desired position. The member 7x may include a universal joint and the siphon-crown may be flattened as shown.
Patent GB-837808-A (GB)
Title: Improvements in or relating to photographic camera shutters
IPC: G03B9/58
Filed: 1956-07-16
Abstract: 837,808. Photographic shutters. GAUTHIER G.m.b.H., A. July 16, 1956 [Aug. 18, 1955], No. 21942/56. Class 98(1) A photographic camera shutter has a mechanism for delaying the opening of the shutter for a predetermined time after release, this mechanism being in two sections which are coupled together, after release of the shutter, by an element on a shutter operating member (e.g. a blade ring), or by the shutter release lever, uncoupled by said element after completion of the running down time of the mechanism, and kept uncoupled thereafter by a retaining device. The pivoted blade shutter shown is set by a pivoted lever 3 carrying a spring biased latch 11 which engages a driving pin on the blade ring 13, and is held in set position by a spring loaded latch 6. When the shutter is being set, a lug 57 on lever 3 rocks a lever 51 which in turn rocks a connected lever 52, having a pin and slot connection with a toothed segment 42, so that this segment is moved to tension a spring 47 attached thereto. This segment, together with intermeshing gears 40, 39, 38 and 37 forms one section of the exposure delay mechanism, and, when spring 47 has been tensioned, a spring biased latch 44a engages a locking pin 43 on the gear 39. The other section of the delay mechanism consists of cooperating pallet wheels 28, 31 and intermeshing gears 30, 32 and 33, the gears 32, 33 being mounted on a lever 34, pivoted co-axially with pallet 28 and interconnected with a lever 63. Upon release of the shutter by lever 22, a pin 62 on blade ring 13 moves away from the lever 63 so that the connected lever 34 pivots under the action of a spring 35 to bring the gear 32 of one section of the delay mechanism into mesh with the gear 37 of the second section of the delay mechanism. Thereafter a lug 13a on the blade ring engages an extension 44b of the lever 44 and rocks the latter to release the latch 44a and allow the delay mechanism to run down under the action of the tensioned spring 47. Lug 13a then strikes a projection 57a of a lever 57 and further blade ring movement is arrested. When the delay mechanism has run down, the lever 52 rocks lever 57 to release the lug 13a and allow the blade ring 13 to open and close the shutter blades. Pin 62 then rocks lever 63, when the shutter blades have closed, so as to incouple the two sections of the delay mechanism. In another form, the shutter release lever moves a latching lever to release a connected lever carrying the gears 32, 33 so that the two sections of the delay mechanism are coupled together, and uncoupling is effected by the movement of the blade ring pin to latch the two levers together again. The shutter described incorporates a flash contact device, as described in Specification 770,041.
Patent GB-155007-A (GB)
Title: Improvements in grinders
IPC: B24B3/02
Filed: 1919-09-06
Abstract: 155,007. White, A. E., (Saphil Manufacturing Corporation). Sept. 6, 1919. Disk apparatus. - A semi - portable grinding- machine comprises a base 1 on which is secured a bracket 3 carrying vertical rods 5 having adjustably mounted thereon a bracket 6 carrying an electric or other motor 7 adapted to drive, through a belt 7<1>, the grinding- disk 37. The grinding- disk is mounted on a shaft 20, Fig. 4, comprising a thin-walled hollow part 25 with solid ends 26, 27 welded or otherwise secured thereto; the ends have parts of reduced diameter running in ball bearings 21 comprising inner rings 23 secured to the shaft and outer rings 22 mounted in a cylindrical housing 19. At the grinding end of the shaft the ring 22 is secured between a shoulder 30 in the housing and a ring nut 31 and at the pulley end the ring 22 has axial freedom between a shoulder 30 and a ring nut 31. At the grinding end the ring 23 is clamped against the shoulder 32 on the solid end 25 by a closing-member 33 having a part 35, fitting loosely over the end of the housing, provided with grooves 36 for felt or other soft rings for preventing the escape of lubricant; the grinding-disk 37 is clamped against the member 33 by a dished washer 40 and a nut 41. At the rear end of the shaft the pulley 44 is pressed against the inner ring 23 by a nut 27, and the pulley also has a flange 45 formed with grooves 46 for felt &c. rings. The housing serves as a container for lubricant and is provided with filling holes 47 and drain openings 49. The housing is mounted in the bore 18 of a support 8, comprising a part 9 and a cap 10, slidable vertically in the bracket 3 by means of an adjusting-screw 12. The machine is shown in Fig. 1 as applied to grinding a block 51 supported on the upper surface 2 of the base 1; it is shown as applied to grinding a milling-cutter in Figs. 2 and 6. The cutter 52 is slidably mounted on a shaft carried by a bracket 54 adjustably secured to the base, and the tooth to be ground is positioned by a spring support 58 adjustably mounted on a rod 60 carried by a support 64 which is mounted on a shaft 62 adjustably carried by the bracket 3; in operation, the cutter is moved along its supporting shaft with the tooth in contact with the support 58. In a modification, adapted for internal grinding on a lathe, the grinding-disk is replaced by a smaller disk carried by an extended spindle and the bracket 3 is mounted on the tool-post of the lathe. In another modification, in order to avoid alteration of the tension of the belt when the support 8 is moved, the vertical rods 5 are carried by the support 8 instead of by the bracket 3.
Patent GB-1334807-A (GB)
Title: Tyre building apparatus and method
IPC: B29D30/32
Filed: 1971-04-19
Abstract: 1334807 Tyre building drum NATIONAL-STANDARD CO 19 April 1971 [19 Feb 1970] 22039/71 Heading B7C In order to maintain the bead core 21, Fig. 3, concentric with the tyre bead shoulder 10 of a tyre building drum 6 whilst the end portion 15 of the carcass material 11 is tensioned axially outwardly to support the bead core prior to ply turn-up, the bead core is supported on circumferentially spaced apart fingers 44, Figs. 2 and 3, mounted on finger frames 42 which are themselves mounted on bead core placer means 34. The finger frames 42 are pivoted about 43 on the axially inner end of placer means 34 so that once the end portion 15 has been axially tensioned, by inflating bag 19, to support the bead core circumferentially between the fingers 44 further expansion of bag 19 causes the frames 42 and thus the fingers 44 to be pulled away from the bead core as shown in Fig. 10. Further expansion of bag 19 causes placer means 34 to pivot about 35, Fig. 11, thus allowing the remainder of the turn-up operation to be completed by axially inward movement of assembly 8, which carries parts 34, 42, 44, to roll bag 19 over the bead. The placer means 34 and finger frames 42 are maintained in their initial supporting position by means of an inflatable bag 80 which bears against placer means 34 and, via a lever 72 and spring arrangement 55 also against frames 42. A side wall pusher means 32 is mounted on the placer means 34 to facilitate, in conjunction with bag 19, application of side wall components to the finished tyre carcass.
Patent GB-322430-A (GB)
Title: Photographic printing process
IPC: G03C1/73
Filed: 1928-07-30
Abstract: 322,430. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). July 30, 1928. Plates, films, and papers; developing.-Photographic prints are produced by exposing colloid layers sensitized with organic compounds (other than ferric salts), which are partially reduced by light, and subjecting the layers to physical development. Suitable colloids are gelatin, albumin, casein or collodion. The organic sensitizers may be dyestuffs and their intermediate products such as amino-compounds, aminonaphthol compounds, hydroxy-compounds, ketones or diketocompound's of the anthraquinone series, anthraquinone-2 :7-disulphonic acid or one of its salts. Coloured sensitizers must be capable of being washed away by a subsequent treatment. For the physical development, metal salts such as silver or mercury salts in the presence of a. reducing agent are used, preferably under acid conditions. Alternatively, the metal salt may be present in the photographic layer before exposure. In an example, paper is coated with a gelatin solution sensitized with sodium 2:7-anthraquinone disulphonate, dried, exposed under a negative, immersed in a solution of silver nitrate, removed to a developing bath containing 1-methyl amino-4-hydroxybenzene sulphate and acetic acid, washed, and fixed in a bath of sodium thiosulphate acidified with potassium meta-bisulphite. In a further example, the dye Flavindulin O with a little chrome alum is used as sensitizer and para-phenylenediamine is used in the developer.
Patent GB-874246-A (GB)
Title: Chloral derivative
Inventor: PETROW VLADIMIR
Filed: 1959-06-26
Abstract: The invention comprises a compound of betaine or betaine hydrate and chloral or chloral hydrate having the empirical formula C7H14O4NCl3 and melting point 122.5 DEG  to 124.5 DEG C., and the preparation thereof by interacting betaine or betaine hydrate with chloral or chloral hydrate in approximately molar proportions, and pharmaceutical preparations containing the compound (see Group VI).ALSO:A pharmaceutical preparation comprising a compound of betaine or betaine hydrate and chloral or chloral hydrate having the empirical formula C7H14O4NCl3 with a diluent may be in the form of tablets and suppositories.
Patent GB-1270888-A (GB)
Title: Apparatus for forming sand piles
Inventor: OGAWA M
IPC: E02D3/08
Filed: 1970-05-08
Abstract: 1,270,888. Wells &c. FUDO KENSETSU CO. Ltd. 8 May, 1970 [27 Aug., 1969], No. 22334/70. Heading E1F. Apparatus for forming sand drains comprises a casing pipe 1 having a sand hopper 10, a vibratory pipe driver 2 on the top of the pipe, a reciprocatory device 3 mounted within the casing pipe, and a ram 7, 8 actuated by the device 3. The casing pipe is driven into the ground by the driver with a plug of sand below the ram head 8. Sand is supplied and the ram is actuated during withdrawal of the casing pipe. The diameter of the drain is dependant on the speed of withdrawal of the pipe, and stepped drains may be formed by varying the pipe speed during withdrawal. The head 8 may be formed of plates radiating from the rod 7 or by pivoted semicircular flaps.