baber/WOPTO huggingface dataset:
Patent GB-730778-A (GB)
Title: Method and means for preparing true surfaces
IPC: B24B7/14
Filed: 1952-06-23
Abstract: 730,778. Surface grinding. PECKETT, S.C. June 23, 1952, No. 15810/52. Class 60. A method of forming true surfaces, e.g. on surface plates, base plates and ways of machines &c., comprises grinding a surface to be trued with an interrupted action to maintain the surface free of significant heat distortion while continuously changing the direction of cut to reduce the surface to an accurate level while presenting a surface pattern of criss-crossing overlapping surface cuts defining a multiple of high spots constituting the true surface and separated by valleys between the spots. A grinding unit 1 is supported from a vertical bracket 2, a hand wheel 3 effecting vertical adjustment of the unit. The bracket 2 is carried at the outer end of an arm 4 carried by an inverted true surface " plate 5 moving on a surface plate 6 supported on a base-plate 7 which also supports the work-piece 8. Instead of using the plate 5, the grinding unit may be mounted on a carriage which runs on machine ways corresponding to the surface plate 6, the bed of the machine corresponding to the baseplate 7, Alternatively the work may reciprocate. The grinding unit 1 comprises a cylindrical casing 9 in which is journalled a vertical shaft 10 terminating at the lower end in an enlarged flange 11. The casing 9 has a sleeve extension 61 by which it is clamped to an arm 62 carried by the vertical bracket 2. The upper end of the casing 9 is enlarged to define an annular seat 25 on which is supported a ring 26 formed with a groove 27 having a varying surface contour alternating between peaks 28 and depressions 29. Rolling in this groove 27 are the balls of a ball-race 30, and overlying the ballrace 30 is a grooved ring 31 formed with a chamfered peripheral edge 32 engaged by correspondingly chamfered ring 33 received beneath a cap 34 held in position. by a nut 35. The shaft ' 10 is urged downwardly by a spring 36, thus loading the cap 34 downwards to force the balls of the race 30 to ride on the bearing surface of the groove 27, so that as the shaft 10 rotates a longitudinal reciprocation is imparted thereto. The contoured groove 27 may be provided in the upper ring 31. The shaft 10 is rotated through worm gearing 40, 41 by a shaft 42 driven by compressed air motor 47. The grinding wheel 57 is mounted on the shaft 55 of a compressed air motor 50 secured to the underside of the flange 11 of shaft 10; air supply is through axial passage 14 in shaft 10, radial passage 15 and port 17 in flange 11 and passage 53 in the motor casing. If the grinding wheel is brought into contact with the work under downward pressure it will stall, thus preventing gouging. A cooling exhaust of compressed air is delivered through discharge opening 68 on to the work. The grinding wheel may be grooved to provide spaced peripheral cutting portions. The reciprocation of shaft 10 may alternatively be effected by providing an unbalanced mass on shaft 42 or 55.
Patent GB-1174654-A (GB)
Title: Apparatus for Mixing Fluids
Inventor: REED ROBERT DEHART
IPC: B01F23/10
Filed: 1967-04-06
Abstract: 1,174,654. Mixing in conduits. JOHN LINK CO. 6 April, 1967, No. 15925/67. Heading B1C. Apparatus for mixing two liquids or two gases comprises a conduit 14, 16, a coaxial member 17 forming an annular chamber 21, and a closed coaxial tube 26, 27 having an elbow 28 communicating with the chamber 21. In operation the fluid of higher pressure is supplied through inlet 22 to the annular chamber 21 and tube 26, and emerges through the orifices 31, 32 to form a screen across the flow of the other fluid. The orifices 31, 32 may be inclined upstream of the conduit 14, 16 (see Fig. 3, not shown) at an angle of 5 to 20 degrees.
Patent GB-1017832-A (GB)
Title: Improvements in or relating to signal detectors
Inventor: ILLINGWORTH LEWIS
IPC: H04Q1/446
Filed: 1961-05-03
Abstract: 1,017,832. Transistor circuits for operating relays. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. April 3, 1962 [May 3, 1961], No. 15966/61. Heading H3T. A circuit for operating a relay in response to the application thereto of an alternating- current input signal comprises a transistor which serves to amplify the alternating-current input signal, the amplified input signal being applied to a voltage-doubling rectifying circuit to derive therefrom a direct voltage which is applied to the transistor for amplification, thereby so as to operate the relay. Resistors R2, R3, R4 are so chosen that under quiescent condi. , tions transistor TX1 is biased to pass a very small current. Upon the application of a voice-frequency input signal at IL an amplified signal appears at the collector electrode of transistor TX1, this being rectified by a voltagedoubling rectifying circuit comprising diodes D2, D3 and capacitors C3, C4, the negative voltage appearing across capacitor C4 being fed back to the base circuit of transistor TX1 to switch the transistor fully on. This switches transistor TX2 off and so de-energizes normallyenergized relay X. Diode D3 is a Zener diode which limits the output of the rectifier circuit for large amplitude signals so as to prevent saturation in transistor TX1 and preserve a rapid switching-off, when the alternating- current input signal ceases. Zener diode D3 also assists the recharge of capacitor C3 when the input signal is removed.
Patent GB-542948-A (GB)
Title: Improvements in night-lights or the like
IPC: F21V37/00
Filed: 1940-11-02
Abstract: 542,948. Night lamps. PEARS, H. W. K., and SLACK, H. F. Nov. 2, 1940, No. 16022. [Class 75 (iv)]  A night lamp consists of a waxed wick a such as a short length of taper secured in a wick holder b placed in a recess in the upper surface of a float c resting on the surface of liquid fuel contained in a cup, wine glass or tumbler. The holder b may consist of a disc of metal, glass, fireproofed wood or card, or a thin tablet of compressed kaolin, talc, kieselguhr, french chalk or the like formed with a circular or key shaped hole to grip the wick which may be secured in position by an adhesive. The float c may consist of a cork washer or a hollow washer of plastic materials such as synthetic resin or cellulose acetate having secured to its upper surface a pierced recessed metal disc or an annular disc d of compressed kaolin, kieselguhr, french chalk &c. Pins or staples e or projections on the metal disc facilitate handling.
Patent GB-225788-A (GB)
Title: An improvement in frame construction for motor vehicles
IPC: B62D21/00
Filed: 1924-07-04
Abstract: 225,788. Karrier Motors, Ltd., and Poole, L. A. July 4, 1924. Frame constructions.-In order to reduce the loading height without special floor construction, the side members a of the frame are swept below the axle b or above it, and provided with brackets d stayed by one or more tension members e and one or more compression members f. The part a<1> of the longitudinals may be of less depth than the part a.
Patent GB-200993-A (GB)
Title: Improvements relating to inscribing the cases of electrical instruments
IPC: G01R11/02
Filed: 1922-06-09
Abstract: 200,993. Orling, A. June 9, 1922. Condensers.-The cover b of the casing of an electrical instrument such as a condenser, is made of wood or like inexpensive material and on it is pasted a paper or fabric label d showing the value of the capacity or other quantity. The edges of the casing are slightly raised, as shown at c, to protect the label, and the condenser or other instrument is secured to the cover as shown.
Patent GB-397877-A (GB)
Title: Improvements in or relating to electric gramophone motors
IPC: H02K19/06
Filed: 1932-03-01
Abstract: 397,877. Alternating-current motors. ROYAL MOTOR AKT.-GES., 74, Freiestrasse, Basle, Switzerland, and BOITEL, A. F., 168, Kaiserallee, Wilmersdorf, Berlin. March 1, 1932, No. 16116. [Class 35.] Motors with unwound armatures ; motors, controlling.-A synchronous gramophone motor comprises a stator having a continuous ring of outwardly extending teeth divided by a circumferential groove accommodating the winding, and a rotor which is secured to the turntable and has internal teeth parallel with its axis which bridge across the interrupted teeth of the stator, the rotor having an outer surface which is uninterrupted circumferentially. In the form shown, the coil groove 24 divides the stator teeth into two parts 21, 21a which are in alignment and equal in number to the teeth 20 on the rotor 19. A trigger 46 may be used to give a starting impulse, this trigger cooperating with a lever 41 carrying a pad 43 which engages the outer surface of the ring 19, the arrangement being such that current is off while the motor is being started. Specification 379,706 is referred to.
Patent GB-1507154-A (GB)
Title: Grinding tool for use in the machining of metals
IPC: B24D3/18
Filed: 1975-04-24
Abstract: 1507154 Grinding tool J C J WIRTH 24 April 1975 16204/77 Divided out of 1507153 Heading C4V A grinding tool comprises abrasive particles mixed with a grinding aid consisting essentially of a compound free of sulphur and halogen, stable under the conditions of use and having a melting point in the range of 70‹F. to 1000‹F., a decomposition temperature at least 100‹F. above its melting temperature and a latent heat of melting greater than 10 cal/gm. The abrasive particles may be overcoated with a resin having the grinding aid dispersed therein or the abrasive particles may be formed into a porous, vitrified mass and the aid impregnated into the pores of the mass. In an alternative embodiment particles are bonded together in a resin matrix and the aid is dispersed at least partly throughout the matrix. Where the tool is a flexible sheet the abrasive particles and the aid may be deposited in the form of a coating on the backing material. The aid may be sodium nitrite, potassium nitrite, sodium nitrate, potassium nitrate, lithium nitrite, lithium nitrate, potassium dichromate or mixtures of these. Particularly preferred compound is the eutectic mixture of potassium nitrate and sodium nitrite and the eutectic mixture of potassium nitrate, sodium nitrite and sodium nitrate.
Patent GB-352658-A (GB)
Title: Improvements in machines for forming the ends of paper tubes
IPC: A24D3/00
Filed: 1930-05-27
Abstract: 352,658. Cigarette-making machines. FARROW, T., 5, Stockport Road, Ashtonunder-Lyne. May 27, 1930, No. 16248. [Class 130.] Paper tubes A for insertion in the ends of cigarettes are formed with an inturned flange a serving as a retainer for an absorbent wad. The tubes of which the ends are to be turned in, are mounted on pins E projecting through an intermittently rotating table B. Grippers G<1>, G<2> close around the tube as it passes under the closing tool H, but are thereafter separated, against the action of springs, by guides F, F<2> on a stationary member F. A recess in the member F permits a spring e<1> to withdraw the pin E whereupon the released tube is removed by an arm L. The intermittent movement of the .table B is effected through bevel gearing from a mutilated toothed wheel on the main shaft, and the reciprocations of the tool H and the arm L by cams. The tool H is cupped with a central projection and four transverse shaping pins.
Patent GB-582680-A (GB)
Title: Improvements in and relating to trolleys for lifting and transporting heavy and/or bulky loads
IPC: B62B3/10
Filed: 1944-08-28
Abstract: 582,680. Clamps. CASBURN, E. V., and MACKENZIE, T. Aug. 28, 1944, No. 16327. [Class 44] [Also in Groups XXX and XXXII] A fastening for engaging and securing the load of a truck (see Groups XXX and XXXII) comprises a book 24 having a bifurcated tailpiece embracing a handle 23 to which it is pivoted by means of a pin 25 and embraced by the limbs of a U-shaped guide 28 the limbs of which have slots 29 in which the pin 25 is constrained to slide. A clamp member 26 having a counterweighted tail 26a is pivoted at 27 to the upper end of the handle 23. Upward rotation of the handle 23 thus causes the member 26 to approach the hook 24 so clamping the load 12 between the hook 24 and the shaped forward face of the clamp 26. The hook 24 may be replaced by a clamp member adapted to slide perpendicularly to a link pivoted to pin 25 and engaging the opposite side of the load to that engaged by clamp 26 or by a chain passing round the load.
Patent GB-777296-A (GB)
Title: Improvements in or relating to display stands
Inventor: CAVECCHI WALTER
IPC: A47B57/04
Filed: 1955-06-07
Abstract: 777,296. Display stands. SOC. D'INSTALLATIONS GENERALES ET D'AGENCEMENTS COMMERCIAUX S. I. G. E. A. C., ANCIENNEMENT H. CAVECCHI ET FILS. June 7, 1955, No. 16391/55. Classes 52 (3) and 52 (5). A display stand comprises a base 1 with upstanding panels 4 carrying uprights 3a which support removable shelves 11 hooking into holes 13 in the uprights 3a. The uprights are part of a frame 3 set at an angle to the base and which is surmounted by a sloping rack 5. On the reverse side of the panels 4 to the shelves 11 compartments may be formed by inserting partitions ; the end walls 8, 8a are held in position by bracing members 9 which may support movable racks 10 by means of hooks or pegs on the rack which engage holes 13 in the members 9. The shelves 11 are provided with hooks 12 which engage holes 13 in the uprights 3a. Wedges 14 may be inserted between the shelf 11 and the uprights to vary the angle of inclination of the shelf. Alternatively, the shelf may be cut away at its inner end to give a downward inclination of the shelf relative to the uprights. In Figs. 8 and 9 is shown another method of attaching the shelves. The compartments may be omitted and the stand designed to fit against a wall as in Fig. 7, in which case the uprights 3a extend downwards to rest on the ground with the panels mounted on tubular supports 1a.
Patent GB-621573-A (GB)
Title: Improvements in a feed-dog driving mechanism of sewing machines
IPC: D05B27/02
Filed: 1946-05-30
Abstract: 621,573. Sewing-machines. KELLER, J. May 30, 1946, No. 16509. Convention date, June 13, 1945. [Class 112] A feed dog drive mechanism, comprising two rock shafts operating a link and lever gear for the feed advance, and two levers for the feed lift, is arranged so that the feed dog remains parallel to the line of feed during its entire movement. The dog 10, mounted on a stirrup 11, is advanced by levers 6 on the rock shaft 3 connected to the stirrup by the link 8. The feed lift is obtained from the rock shaft 17 by means of interengaging levers 16, 18 which co-operate with the stirrup. One end of the lever 16 is connected to the rock shaft 17, and the other carries a roller 13 engaging a slot 12 in the stirrup. The lever 18, pivoted at 19, engages a slot 161 in the lever 16, and carries a roller 14 running in the slot 12. The pivot 19 is eccentrically mounted on the machine frame to, permit accurate setting of the mechanism.
Patent GB-601695-A (GB)
Title: Process for the production of artificial filaments, fibres and films of low swelling characteristics
IPC: D01F2/06
Filed: 1945-06-28
Abstract: Artificial filaments, fibres, horsehair, bristles and films of low swelling characteristics are obtained by extruding an aqueous solution of cellulose or of a cellulose derivative containing free hydroxyl groups having dissolved therein trimethylolphenol in a slightly condensed condition, into an aqueous coagulating bath, finishing the so formed filaments and films and subjecting them to a thermal treatment in the presence of acid.  The trimethylolphenol is said to form bridge-linkages between the cellulose molecular chains. The fibres are impregnated with an acid catalyst, e.g. acetic or lactic acid prior to the thermal treatment.  To the spinning solution resins such as polyvinyl alcohol, partial polyglycerines and polymerisation products of acetaldehyde, pigments, plasticisers and colouring and dulling agents may also be added.  In an example, fibres are spun from viscose containing slightly condensed trimethylolphenol, the fibres being desulphurised, softened, treated with aqueous lactic acid and heated at 115 DEG  C.  In another example, films are extruded from viscose, containing slightly condensed trimethylolphenol and butyralpolyvinyxxanthate, the films being softened in aqueous glycerine containing lactic acid and heated to 125 DEG  C. Specification 601,694 is referred to.
Patent GB-421179-A (GB)
Title: Improvements in and relating to electric arc welding
IPC: B23K9/12
Filed: 1933-06-09
Abstract: 421,179. Electric arc welding. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Catlett, J. T.; 232, 4th Street, Scotia, New York, U.S.A.) June 9, 1933, No. 16580. Convention date, June 21, 1932. [Class 39 (iii)] The electrodes 1, 2 are fed independently and simultaneously in accordance with the voltage between them, and the feeding means are selectively controlled to maintain a predetermined relationship between the voltages between the electrodes and the work. The electrodes are operated by reversible motors 16, 17 having fields 20-23, controlled by switches 25-28 under the control of relays 29, 30. Relay 29 comprises a pivoted contact 45 co-operating with spring-mounted contacts 46, 47 and is operated by coils 39, 41 energized by the voltages between the respective electrodes and the work. Relay 30 has a single coil energized by the voltage between the electrodes. The electrodes are fed from a polyphase transformer and the motors are fed from an auxiliary winding 24. The work is not connected until the arc is struck with consequent closure of contacts 11, 12. If switch 68 is opened the arrangement may be operated on a single-phase circuit. Specification 405,519 is referred to.
Patent GB-181720-A (GB)
Title: Detachable hub for wheels of motor driven and other vehicles
IPC: B60B3/18
Filed: 1922-06-15
Abstract: 181,720. Labeyrieg R. June 16, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Detaching from, and attaching to, permanent hubs.-The drive is transmitted between the detachable wheel hub 1 and the permanent hub by Interengaging radial teeth 3, 3'.
Patent GB-726481-A (GB)
Title: A refiner for fibre suspensions and pulp
IPC: D21D1/22
Filed: 1953-06-17
Abstract: 726,481. Refining paper pulp &c. SKARDAL, K. A. June 17, 1953 [Dec. 4, 1952], No. 16748/53. Class 96. [Also in Group II] Paper pulp &c. is refined by squeezing and rubbing between the inner surface of a fixed, perforated drum 11 and curved, perforated plates 21 with flanges 22, pivoted at 20 to a rotating disc or plate 19 on a shaft 15. Centrifugal force urges the curved plates outwardly, and directs liquid and reduced pulp through the drum perforations 14. There may be a succession of such drums 11 &c., each with smaller perforations 14 than the preceding one, all being within a casing 3 supplied with pulp at 8.
Patent GB-774951-A (GB)
Title: Improvements in and relating to absorption devices for use in filtering the productsof combustion formed in combustion heating appliances
IPC: B01D46/00
Filed: 1955-06-10
Abstract: 774,951. Gas filtering devices. FREMION, M. June 10, 1955 [June 11, 1954], No. 16815/55. Class 25 A gas filtering device for use with heating appliances and shown in Fig. 1 above the waste gas outlet of a gas water heater 4, comprises a cylindrical casing 5, Fig. 2 having gas outlet apertures 6 and a dependent truncated gas inlet member 7 and capped by a cover 20. Between the cover and the casing top edges 9 is an asbestos plate 10 carrying on arms 13, 14 a perforated circular plate 15 in an inclined position. Depending from the plate, are two concentrically arranged curtains 17, 18, Fig. 3, of asbestos wicks 16 with a small number of wicks aranged in an arc 19 between the curtains on the side of the plate nearest the arm 14. A close mesh metal grid 8 rests on the member 7. The casing may be of square rectangular or oval cross-section and the device could be incorporated in its associated heating appliance.
Patent GB-892439-A (GB)
Title: Apparatus for magnetically recording and reproducing high frequency signals
Inventor: SAWAZAKI NORIKAZU
IPC: G11B15/64
Filed: 1960-05-12
Abstract: 892,439. Feeding magnetic tapes; television. TOKYO SHIBAURA ELECTRIC CO. Ltd. May 12, 1960, No. 16849/60. Class 40 (2). A magnetic recorder and play-back device comprises a stationary cylinder 1, divided into upper and lower members coaxially supporting between them a rotary disc 3 carrying one or more magnetic heads 5 around its periphery, pins 15 to guide a magnetic tape 6 around the cylinder in a predetermined helical path, and means for forming a thin layer of gas between the surface of said cylinder and the magnetic tape to reduce friction between them. The disc 3 is driven at a high speed by motor 2. The cylindrical stator 1 has an inner wall 20 and an outer wall 19 between which is an annular air chamber 21, in which higher than atmospheric pressure is maintained. The air ejected through holes 22 forms a layer between the tape and the stator. For fast re-wind the air pressure is further increased. Grooves 23, 24 in the cylinder adjacent to the disc serve to suck a portion 1 of tape towards the stator and maintain contact between the tape and the heads.
Patent GB-744326-A (GB)
Title: Improvements relating to electrical testing apparatus
Inventor: DRACOPOLI JOHN LAWRENCE
IPC: G01R19/145
Filed: 1953-06-18
Abstract: 744,326. Detecting presence of A.C. potentials. HIVOLT, Ltd., and BRUCE, F. M. June 18, 1954 [June 18, 1953], No. 16889/53. Class 37. Self-contained portable apparatus for detecting the presence of A.C. potentials (particularly H.T. voltages) without touching the potential bearing conductor comprises a metallic probe (e.g. as at 3 in Fig. 2) connected through a capacity 11, Fig. 1, to the control grid of a thermionic valve amplifier 12 whose output actuates a device such as a moving-coil meter 8. As shown in the example of Fig. 2 all the components including batteries 7 supplying amplifier 12 are enclosed in a common insulating casing 1 which is also the apparatus handle and may have a pistol grip. The probe 3 on to onto which may be threaded an insulating cap extends from casing 1 and is contained in a metal tube 2 surrounded by an insulating tube 4. The output meter 8 is at the rear end of the casing 1 and visible through window 9 and the assembly comprises two switches 6, 10 and a unit 5 comprising valve voltmeter components 12 &c. In Fig. 1 the valve voltmeter 12 has an anode load transformer 14 delivering into output meter 8 via bridge rectifier 15 and also supplying feed-back into input capacitor 11 whereby pressing feed-back switch 10 converts the valve voltmeter 12 into a self-sustained oscillator and thus checks the working of all the components. In using the apparatus the operator (i) closes battery-supply switch 6, (ii) momentarily presses feed-back switch 10 and checks that the pointer on the output meter 8 reaches a given (normal oscillation) mark, and (iii) points the pick-up probe 3 in the direction of the conductor to be tested. If the latter is alive or energized an alternating voltage is induced in the probe 3 and produces a deflection on the meter 8. In Fig. 3 for H.T. spout testing the probe 3 co-operates with a cross bar 19 carrying a further threaded stem 20 to which one or other of the threaded attachments 16, 17, or 18 may be fitted. Also for spout testing the probe 3 may be replaced by metallic disc at the centre of a larger disc of insulating material. If great sensitivity is not required the meter 8 may be replaced by a lamp or by a relay controlling a lamp.
Patent GB-166520-A (GB)
Title: Improvements in self-cleaning spark plugs
IPC: H01T13/14
Filed: 1921-06-21
Abstract: 166,520. Champion Ignition Co., (Assignees of Champion, A.). July 12, 1920, [Convention date]. Sparking-plugs. - A ceramic insulator has circumferential ridges 9 which are formed by frusto-conical surfaces enclosing more than a right angle. The innermost ridge is placed at the end of the insulator; the 'best spacing of the ridges is onetwelfth of an inch, the depth of the grooves being one half of this distance.