baber/WOPTO huggingface dataset:
Patent GB-275400-A (GB)
Title: Improvements in rangefinders, heightfinders and the like
IPC: G01C3/00
Filed: 1926-07-16
Abstract: 275,400. Barr & Stroud, Ltd., Barr, A., Stroud, W., and Macgill, C. D. July 16, 1926. Range-finders. - Mechanism is provided whereby the operating head of a range-finder used for height-finding may be actuated from a working head D relatively to which the rangefinder is movable without causing by such movement relative rotation of the operating and working heads. The range-finder tube A may be rotated in altitude by the handle 2, being supported in a fork B. Teeth 3 on the fork engage a toothed wheel 5 free on the working head C, the wheel 5 forming part of a differential gear 6, 7, 8, the jockey wheel 7 which is mounted on an arm 4 fixed to the shaft C. The gear ratio between the wheels 3, 5 are the same as that between the wheel 10 operated by the head D and the wheel 9 on the differential gear wheel 8. Motion of the tube therefore does not result in relative movement of the heads C, D but rotation of the head D is transmitted to the head C. The arrangement shown in Fig. 3 corresponds substantially with that of Fig. 1, the differential gear in both cases moving with the range-finder tube. A modification is described in which the differential gear does not rotate with the tube A. In each case the shaft C moves the refracting prism F.
Patent GB-769879-A (GB)
Title: Inert gas-shielded arc welding torch with water-cooled non-consumable electrode and method of welding therewith
IPC: B23K9/167
Filed: 1955-06-20
Abstract: 769,879. Welding by fusion. UNION CARBIDE & CARBON CORPORATION. June 20, 1955 [Aug. 9, 1954; Sept. 27, 1954], No. 17828/55. Class 83 (4). [Also in Group XI] In order to minimize electrode wear in gasshielded arc welding using alternating current or reverse polarity direct current, cooling fluid is passed through a passage extending within the electrode to the vicinity of the arcing tip. The electrode may be of copper or an alloy thereof and the arcing tip may be of the same material or gold or silver or an alloy thereof or tungsten. Shielding gas constituents may be argon, helium, oxygen, carbon dioxide, nitrogen and additives such as silicon tetrachloride. Aluminium, steel, stainless steel and copper containing 3 per cent silicon are examples of workpieces. Mild steel and aluminium were welded using a shielding gas containing 93.1 per cent argon, 4.9 per cent oxygen and 2 per cent nitrogen. To weld aluminium, argon containing 0.1-5 per cent (preferably 0.1-0.4 per cent) oxygen was used. Other shielding gases referred to are argon, helium, carbon dioxide and mixtures of argon with 5 per cent or 50 per cent carbon dioxide, argon with 50 per cent helium and 5 per cent oxygen and argon with helium and carbon dioxide. A welding torch consists of a hollow body B into which is threaded a copper tube E. A hollow conical copper arcing tip 40 is threaded into the lower end of the tube E and is surrounded by a watercooled gas nozzle N secured to the lower end of the body B. Shielding gas is passed through grooves 22 in the body B to the nozzle N. A further tube 38 extending through the tube 36 serves to convey cooling water to the hollow tip 40. The cooling water outlet 14 communicates with the hollow tip via the space between the tubes 36 and 38. In a modification, the electrode is formed as a welded unit consisting of concentric copper tubes and a copper or tungsten arcing tip welded thereto.
Patent GB-937197-A (GB)
Title: An improved method and apparatus for forming plastic articles
IPC: B29C49/48
Filed: 1959-10-06
Abstract: 937,197. Blowing-moulding machines. OWENS-ILLINOIS GLASS CO. Oct. 6, 1959 [Jan. 8, 1959; Jan. 28, 1959; Jan. 30, 1959], No. 17920/63. Divided out of 937,195. Class 87(2). In a blow-moulding machine, mould halves 45 are moved towards each other, but not closed, to bring members 35, 36 into engagement with an extruded tube 30, a knife 37 severs the gripped length of tube, and immediately after severing, the mould is lowered. During this movement, the tube recovers from stresses imposed on it. A blowing head is then inserted into the bottom of the tube, the mould closed, and the tube blown into the shape of the mould. In a modification, Fig. 5, the extrusion head 40 is provided with a vertically reciprocable blowing head 83. Specification 937,196 is referred to.
Patent GB-130592-A (GB)
Title: Machine for Cutting Beets, Carrots, and the like.
IPC: B26D3/18
Filed: 1919-07-18
Abstract: 130,592. Naamlooze Vennootschap Machinefabriek De Pol, (formerly Naamlooze Vennootschap Zutphensche Constructiewerkplaats en Reparatie-in-richting). July 30, 1918, [Convention date]. Cutting and slicing vegetables.-In a barrel cutter for vegetables having finger-cutting knives 7 which act in advance of the slice-cutting knives 6, tho knives 7 are mounted on a knife-carrier 8 which is hinged at 9 so that the blades can be moved from the working position, in which they project through slots in the drum 5, into the interior of the drum and secured by studs 13. The knives 7 in one row alternate with those of the other row in the same set.
Patent GB-1521446-A (GB)
Title: Method and apparatus for obtaining dental prostheses
IPC: A61C9/00
Filed: 1977-04-29
Abstract: For the purpose of obtaining a perfect mixing of the mixtures intended for taking the impression and of simplifying the operations involved in said impression taking, mixing takes place, in a complete manner and mechanically, of a first mixture composed of a silicone mass and a catalyst, which are contained, in premetered quantities, respectively in a container (1) having a cover (2) and in the cavity (3) of said cover; said mixture is introduced into the impression carrier and a first impression is taken on the patient. Mixing then takes place, in a complete manner and mechanically, of a second mixture which is also composed of a silicone fluid and a catalyst, which are contained in premetered quantities in a container similar to the first (10, 14, 15): part of said second mixture is injected into the gingival zones of the teeth and onto said first impression by means of a pressure syringe (10, 12), and finally a second final impression is taken on the patient. <IMAGE>
Patent GB-724621-A (GB)
Title: Improvements relating to a permanent magnetic separating apparatus
IPC: B03C1/14
Filed: 1953-06-29
Abstract: 724,621. Magnetic separators. SPODIG, H. June 29, 1953, No. 17994/53. Class 117. A U-shaped iron frame 1, 2 forms a closed magnetic circuit with an axle 5 carrying rotatable disc-shaped pole-pieces 8 which project into the airgap between magnets 6 mounted on the frame. Material to be separated is introduced between the pole-discs and magnetic material adhering to the discs is carried round to a neutral zone where it drops off, or is removed by e.g. a brush (not shown). Parts 1, 2 of the frame may be movable to adjust the airgap between the magnets and pole discs. Modifications: (i) a single pole-disc only is used, preferably closer to one magnet than the other, Figs. 1, 2 (not shown); (ii) a further disc of non-magnetic material may be arranged between the two discs 8, Fig. 4 (not shown); (iii) the discs 8 may be made of alternate sectors of magnetic and non-magnetic material to reduce eddy currents, Figs. 5, 6 (not shown) ; (iv) instead of a U-shaped frame, the frame parts 1, 2 may be joined at both ends by an axle carrying a pole disc, Fig. 7 (not shown).
Patent GB-139448-A (GB)
Title: Improvements in resistance for electric furnaces
IPC: H05B3/06
Filed: 1919-07-18
Abstract: 139,448. Piquerez, E. Feb. 26, 1919, [Convention date]. Resistances. - A heating-element, more particularly in the form of a carbon rod to be inserted in a quartz tube for use in a furnace, has enlarge contact parts on which metal of low resistance such as copper is deposited. The deposit may be made on the surface of, or inside a hole in, each contact part, and may be covered by a coating of enamel having a high melting- point. The metal coating may be deposited electrolytically or by spraying. The Specification as open to inspection under Sect. 91 (3) (a) covers also the use of enlarged contact parts having more than one hole coated with metal. This subject-matter does not appear in the Specification as accepted.
Patent GB-613281-A (GB)
Title: Improvements in or relating to breech block retaining mechanisms for fire arms
IPC: F41A17/36
Filed: 1946-06-17
Abstract: 613,281. Smallarms. SAWYER, B. R., DUKE, J. R. C., EDMONDS, F., and MITCHELL, S. S. C. June 17, 1946, No. 18133. [Class 119] The breech-block 1 of a firearm is held in the retracted position, in order that a partiallyfilled magazine C may be completely filled, by a retainer 6 which is moved by a manual device 9 accessible from the exterior of the gun, the retainer also being brought into operation by the magazine platform 4 when the magazine is exhausted. In the construction shown the retainer 6 is pivotally mounted and moves under the influence of a spring 8. Its end 5, remote from the pivot, and a projection 10 of the platform 4, both have inclined sides so that they can slip past one another should the platform be so tilted that its projection rides above the retainer.
Patent GB-1465823-A (GB)
Title: Amplifier circuit arrangements
IPC: H03F3/72
Filed: 1974-04-25
Abstract: 1465823 Alarm clocks SONY CORP 25 April 1974 [1 May 1973] 18189/74 Heading G3T [Also in Divisions H3 and H4] A radio-alarm clock has an amplifier comprising a negative feedback circuit connected between the output of power amplifying transistors 83, 84 and the input of a driving transistor 82, and a snooze switch 20 connected between a voltage source 55 for applying a voltage to the amplifier and a charging and discharging circuit 140. By closing auto-alarm switch 16 operated by a push button (15), Fig. 1 (not shown), the radio 51, 53 is switched on by a timer switch 31 at a time pre-set on alarm setting drum (9). By pressing a snooze button 19, a capacitor 145 charges, transistor 143 conducts and D.C. and A.C. negative feedback are applied from 85 to the base of transistor 82 to lower the gain of the amplifier 53. Also the voltage at 85 is lowered and transistor 81 is turned off and reproduction through the loudspeaker 54 is stopped. After a time such as 5 to 10 minutes, the capacitor 145 discharges sufficiently through resistors 146, 144 to turn transistor 143 off. This disconnects the negative feedback and transistor 81 turns on so that the broadcasting wave is reproduced in the loudspeaker 54. As the A.C. feedback via capacitor 142 persists longer than the D.C. feedback via resistor 141 to lower the gain of the amplifier the distorted output from the transistor 81 is prevented from being applied to the loudspeaker when the transistor 81 is changed from its off to its on state. The radio may also be switched on by a push-button switch (17) 18.
Patent GB-1205197-A (GB)
Title: Improvements in vehicle heading-setting controls
Inventor: CHOMBARD PIERRE ANDRE
IPC: G05D1/02
Filed: 1969-04-09
Abstract: 1,205,197. Automatic steering control. SOC. FRANCAISE D'EQUIPEMENTS POUR LA NAVIGATION AERIENNE. April 9, 1969, No.18266/69. Heading G3R. In an automatic steering system for a vehicle, the difference in position between elements indicating measured and desired headings operates, by way of a shaped cam with lost motion, a rotary electrical heading correcting signal generator, movement of the rotor of which is thus limited to less than 180 degrees even when a turn greater than 180 degrees is selected. In Fig.2 heading is indicated against a fixed pointer 7 by a repeater compass card 1 driven by a follow-up servomotor 5 associated with a synchro transmission from a remote compass. A pointer 8 is movable relative to card 1 to set a desired course by manual or motor operation of a shaft 12. Coupled to pointer 8 is a spring-loaded cam follower 20 which, when pointer 8 coincides with pointer 7 and the selected course is being maintained,-rests in a hollow 15a in a cam 15 coupled to the rotor of a synchro or potentiometer transmitter 13 so that spigot 17 is midway between stops 18a, 18b on the stator and the output of the transmitter is zero. When a new heading is selected, follower 20 is moved in a corresponding direction and the output of transmitter 13 increases until spigot 17 reaches a stop, the output then remaining constant for any further movement of the follower up to the point 15c of the cam thus permitting a turn of more than 180 degrees. The output of transmitter 13 adjusts the heading until servomotor 5, operating through a differential gear 11, brings pointer 8 into coincidence with pointer 7 again. In a modification, the position of stops 18a, 18b is adjustable to counter lateral drift.
Patent GB-1187985-A (GB)
Title: Control Panel.
IPC: H01H13/84
Filed: 1967-04-20
Abstract: 1,187,985. Resistance networks. MINNESOTA MINING & MFG. CO. 20 April, 1967 [21 April, 1966], No. 18319/67. Heading H3U. [Also in Division H1] A resistance network for controlling e.g. a tape dispenser, comprises a potential divider consisting of resistor 236, resistors 200 to 220, resistors 232, 234 and resistor 238. Asignal of the desired magnitude is applied to the terminal 196 of the controlled apparatus by depressing the corresponding push button switch 170 to 192. The range of signal values may be altered by changing the positions of ganged switches 100, 102 and hence the connection of resistances 232, 234 relative to resistances 200 to 220. Variable potentiometers 252, 256 are connected in parallel with each other and apply signals to terminal 196 when the required switch 246 or 248 is closed. A further switch 264 allows the voltage across resistor 236 to be applied to output 196.
Patent GB-710081-A (GB)
Title: Improvements in or relating to the annealing of metal in strip or like elongated form
Inventor: RANDALL WALTER FREDERICK
IPC: C21D9/62
Filed: 1950-07-21
Abstract: 710,081. Annealing TELEGRAPH CONSTRUCTION & MAINTENACE CO., Ltd. July 18, 1951 [July 21, 1950], No. 18333/50. Class 72 Metal in strip form is continuously annealed by being passed through an evacuated tube of inverted U shape having a cross-section not greatly in excess of the strip and having each open end immersed in a bath of conductive liquid, the length of each limb of the U-tube being sufficient to enclose a column of liquid balancing the atmospheric pressure, heat being generated in the strip by connecting the liquid seals, or the metal strip at a point intermediate the seals, to a source of electric potential. As shown, a U-tube has vertical limbs 2, 3, which may be water cooled, immersed in baths of mercury. Metal strip S passes from a spool 7 into one of the mercury baths, through the U-tube to the second mercury bath and on to a winding spool 12. The U-tube is evacuated and an electric current passed through the strip by connecting the baths to a source off current or if the baths are to be kept at earth potential, the supply may be fed to the strip through a shoe in the crosspiece 4 of the U-tube Fig. 2 (not shown). If the tube is metallic one or both ends should be of non-conducting material or a non-conducting portion 25 included in one or both limbs. The inner surface of the tube may be coated to produce a , reflecting surface. Temperature indicators may be fitted to the tube and may operate controls to vary the speed of the strip or the heating current.
Patent GB-897103-A (GB)
Title: Improvements in or relating to door handles, door knobs and the like
IPC: E05B3/04
Filed: 1959-05-29
Abstract: 897,103. Securing handles on spindles. JAGGI-HALLER, E. May 29, 1959, No. 18417/59. Class 80 (2). In a door handle assembly comprising a door handle and a spindle, the spindle 7 has at least one row of serrations 8 thereon which are adapted to engage corresponding serrations 5 within a bore 4 of the handle and at least one spring 9 is provided on the side of the spindle opposite a side thereof upon which the serrations are provided so as to urge the serrations on the spindle into engagement with the serrations in the bore. As shown, the handle 2 may be detached by pressing the end of the grip of the handle towards the door sufficiently to compress the spring and at the same time pulling the handle off the spindle. In a modification, Figs. 4-6 (not shown), the serrations on the spindle are provided on a member separately attached thereto. One handle may be permanently fixed to the spindle. Serrations and springs may be provided on two faces of the spindle.
Patent GB-184486-A (GB)
Abstract: 184,486. Knapp, K., and Neumeyer Akt.-Ges., F. Aug. 15, 1921, [Convention date]. Lighting and heating systems.- A variablespeed generator lighting system is provided with a single winding cut-in and cut-out switch the winding of which is in series with the field winding of the generator, connected across the positive terminal of the generator and an auxiliary brush, and under the control of a switch integral with the lamp switch in such a manner that the generator is excited only when the lamp circuit is closed. The winding k<1> of the cut-in switch is connected in series with the field winding f across the terminal c and the auxiliary brush d of the generator and is under the control of the lamp switch h in order that the battery m is not connected to the generator unless the lamp circuit is closed.
Patent GB-1149236-A (GB)
Title: Prestressed rolling mill
Inventor: BRIGGS PETER RICHARD ASHWORTH
IPC: B21B37/16
Filed: 1965-05-03
Abstract: 1,149,236. Rolling. DAVY & UNITED ENG. CO. Ltd. 26 April, 1966 [3 May, 1965], No. 18586/65. Heading B3M. [Also in Division G3] A prestressed rolling mill includes a mechanism for automatically controlling the prestressing force, to maintain the thickness of a rolled product constant, a mechanical screwdown for the mill being automatically operated if the prestressing force departs from a given range. Hydraulic prestressing jacks 27, 28 are positioned between the backing chocks 14, 15 of backing rolls 15, 16, work rolls 25, 26 being positioned within chocks 23, 24 located within the chocks 14, 15. Further jacks 31-33 act between the various chocks, all the jacks being supplied with oil from a pump 60, Fig. 1, via appropriate valves 63A and 63 and 71. For setting up the mill the prestressing force applied to the jacks 27, 28 is kept constant while the screws 20 are automatically adjusted to provide a constant workpiece gauge, while for running the mill, the screws remain in position (except when the prestressing force departs from its given range) and the gauge control is effected by varying the prestressing force. During setting up, switch 76 is charged to " set up " and the valve 71 is controlled by a differencing circuit 75, the pressure in rams 27, 28 being maintained at a value set manually at 77. Variations in this pressure as measured by a load cell 30 cause a difference signal to appear at amplifier 78 to modify the pressure. A gauge error signal is simultaneously fed from amplifier 81 to a gate unit (85), Fig. 3, the signal causing operation of contactors 36 to vary the screwdown, if the gauge error exceeds a manually adjusted gate width value set at 86. When a meter 99 indicates that the mill is running on-gauge the switches 76 and 84 are changed over so that a gauge error signal is fed to amplifier 78 to control the valve 71. The gauge error signal is compounded of signals from load cells 30 and 21, from synchros 37, 40 sensing the screw position, and from a manually set device 96 indicating the desired gauge. A further signal from a thickness gauge 103 or 104 is fed through a monitor integrator 107 to cause a long term adjustment of amplifier 81 for ongauge rolling. A potentiometer 46 is adjusted initially so that when the work rolls just touch each other the gauge error signal is zero.
Patent GB-753942-A (GB)
Title: Improvements in valves
IPC: F16K3/24
Filed: 1954-06-24
Abstract: 753,942. Valves. KLINGER AKT.-GES., R. June 24, 1954 [July 24, 1953], No. 18592/54. Class 135. In a valve comprising a piston-like closure member 15 sealed by packing-rings 3, 3a which are held apart by an apertured spacer 2, the latter is formed of two rings spaced apart by, at most, four main struts 7 ... 9 having aerofoilshaped cross-sections. Auxiliary supports may be provided between the main struts. The strut 7 may extend over an arc of 120 degrees and may be in contact with the valve casing over its entire width. The upper and lower edges of the apertures in the spacer are bevelled and rounded, respectively, and the lower end of the closure member is coned. The outlet passage 1 is convergent or, as shown, divergent, and the inlet passage may also diverge towards the piston.
Patent GB-733583-A (GB)
Title: Apparatus for separating mixtures of particles into fractions according to specific gravity
IPC: B03B5/36
Filed: 1953-07-06
Abstract: 733,583. Washing granular material; sink and float separation apparatus. STAMICARBON N.V., [formerly MAATSCHAPPIJ VOOR KALENBEWERKING STAMICARBON N.V.]. July 6, 1953 [July 7, 1952], No. 18729/53. Class 82 (2). A wash-box with an inclined bottom, a device for discharging float material from the box, and a worm conveyer mounted adjacent the inclined bottom for raising and discharging the sinks, is provided with one or more plate or like members located on the conveyer so as to rotate in the shallow end of the wash-box, the apparatus being so constructed that the sinks on being raised to the plates are lifted and discharged thereby from a side of the wash-box (i.e. in a direction substantially perpendicular to the axis of rotation of the worm conveyer). As shown, the worm conveyer 13 (having two helices) is driven by a motor 14 through a chain 15 and bevel gears 16, 17 and carries perforated partitions 18 which expel the sinks fed thereto over a sill 19. The whole mechanism depending into the heavy medium in the wash-box 4 is carried on a frame 20 pivoted about the axle 21 to allow it to be lifted out of the medium when not in use. A paddle 9 is similarly carried on the frame and discharges the floated products at 10. This paddle is driven by a motor 11 through a chain 12.
Patent GB-344743-A (GB)
Title: Process for joining together relatively small metal elements
IPC: B23K1/00
Filed: 1930-06-20
Abstract: <PICT:0344743/III/1> <PICT:0344743/III/2> In a process for joining together small metal elements to form composite strips, a guide, through which the elements are mechanically fed, passes below a vessel from which an adhesive medium such as nitro-cellulose varnish flows; the flow may be controlled by bushes and the drying accelerated by heat.  As the elements are joined a knife c automatically operates to cut the composite strip into the desired lengths.