baber/WOPTO huggingface dataset:
Patent GB-462126-A (GB)
Title: Improvements in or relating to shutter-operating mechanisms for photographic cameras
IPC: G03B9/22
Filed: 1935-09-02
Abstract: 462,126. Photographic cameras. KODAK, Ltd. Sept. 2, 1935, No. 24442. Convention date, Sept. 14, 1934. [Class 98 (i)] In shutter-actuating mechanism of the delayed action type, the cocking of the spring sets a latching device to hold it in the cocked position and at the same time moves the latching device into a position where it can be released by the trigger by which the shutter is normally actuated directly. Preferably, the latching device in its operative position prevents the full movement of the trigger for direct actuation of the shutter, and the delayed actuating mechanism is carried as a separate unit on a plate that can be fitted to the shutter mechanism of a camera of usual type. Fig. 2 shows the mechanism in inoperative position. On an annular plate 10 is mounted a stub axle 16 carrying a setting arm 17, a toothed segment 15 gearing with a timing train, and a cam by which the main lever of the shutter mechanism is actuated. A power spring 12 is put in tension when the arm 17 is turned to the right in the Figure, and a nose at the end of the segment is engaged by a spring-actuated latch member 20 which has a sliding movement limited by the pin-and-slot device 21, 22. In the locking movement of the latch, the toe 25 comes across the arcuate slot 26 traversed by the projection 27 on the trigger so that actuation thereof withdraws the latch and sets the delayed action mechanism in operation. At the same time the limited movement of the latch prevents the full operation of the trigger. The shutter actuating mechanism is shown in Fig. 5 and comprises a main spring-pressed lever 31 which is actuated by the trigger 5 through the cam 52 and actuates a spring- pressed rocking member 61 connected by a link 66 to the shutter-blade actuating ring 68. The lever 31 carries a spring arm 30 which is in driving engagement with the cam 28 on the spindle of the delayed action mechanism. For this purpose the cam 28 is bevelled on its rear under-surface so as to slide over the arms 30 when setting the mechanism and engage the arm with its cam surface. A swinging weight 63 is provided to increase the retardation of the movement of the shutter blades for a slow snapshot exposure. The plate 10 carrying the delay mechanism fits into the shuttermechanism casing and is held by the cover plate thereof.
Patent GB-1149106-A (GB)
Title: Acid brilliant zinc electroplating bath
Inventor: GELDBACH INGEBORG
IPC: C25D3/22
Filed: 1967-05-26
Abstract: 1,149,106. Bright zinc electro-plating baths. I. GELDBACH, A. GELDBACH, U. GELDBACH and S. GELDBACH [trading as FIRMA DR. -ING. MAX SCHLÍTTER FABRIK FUR GALVANOTECHNIK]. May 26, 1967 [May 28, 1966], No.24483/67. Heading C7B. An acid bright zinc electro-plating bath having good throwing power comprises an aqueous solution of at least one single zinc salt including an aromatic carbonyl or carboxylic compound, a non-ionic polyoxyethylene surfactant compound, and ammonium chloride and/or another compound capable of forming soluble complex salts with zinc salts in the pH range 2À5 to 5À5. The zinc salt may be the sulphate, chloride, acetate or fluoborate and instead of ammonium chloride per se another ammonium salt such as the sulphate or acetate may be used in combination with zinc chloride or sodium chloride. The complex-forming compound may be sodium glycerophosphate, triethanolamine, ethylenediamine or the mono- or di sodium salt of E. D. T. A. The aromatic carbonyl or carboxylic compound may be cinnamaldehyde, m -hydroxybenzaldehyde, acetophenone benzophenone, benzal acetone, bensoic acid, cinnamic acid, salicylic acid, phenylpropiolic acid, benzoyl acetic acid or its ethyl ester, or o-coumaric acid. The non-ionic surfactant preferably includes at least 6 ethylene oxide molecules condensed with a long chain (C 6  or more) fatty alcohol, acid, or amine or an alkylphenol. To provide water solubility the surfactant should include 10 or more ethylene oxide moles and one example relates to a condensation product of tributyl phenol with 50 moles ethylene oxide. Typical bath temperatures used are 15 to 30C. providing a bright deposit current density range of 1 to 5 amps/ sq. dm. The bright zinc layers formed may be phosphated or chromated to a colourless, bluish, yellow, brown or olive finish.
Patent GB-987575-A (GB)
Title: Improvements in spring latch devices, particularly for doors and the like
IPC: E05C1/14
Filed: 1961-07-06
Abstract: 987,575. Latches. L. MARZOCCHI. July 6, 1961 [July 8, 1960; June 14, 1961], No. 24567/61. Heading E2A. A spring latch device, particularly for doors, windows and the like, of the type in which two rods 8<SP>1</SP> are simultaneously reciprocable in opposite directions and in which the force exerted on a handle to open or shut the door &c. automatically operates the spring latch, is characterised in that each rod is provided with a pin 7 and the handle 1 is provided with an eye 4 whose sides form a parallelogram so arranged that on movement of the handle in either direction from a mean position, two sides of the eye engage the pins and cause them to converge. A spring 9 opposes movement of the pins.
Patent GB-151824-A (GB)
Title: Improvements in and relating to astronomical demonstrating devices
IPC: G09B27/02
Filed: 1919-10-08
Abstract: 151,824. McHenry, S. B. Oct. 8, 1919. Globes and orreries. - In an apparatus for demonstrating the earth's illumination as described in Specification 4804/15, means are provided for causing the element representing the earth to swing in an orbit. The spherical element 2, Fig. 4, representing the sun, is mounted about a diameter on standards 6 secured to a suitable base-plate 4. Secured at the ends of a diameter at right angles to that of the attachment of the standards are tangential bars 7. The shaft 10 which rotatably supports the sphere 3, representing the earth, is a U-shaped member 9, passes through a slot in the bars 7. The support 9 is provided with a flat base 12 and a pin 11, Fig. 7, which extends into an endless groove 13 in the base-plate 4. A ring 14, encircling the sphere 3 and connecting the bars 7, serves to indicate the amount of surface illuminated as the sphere is guided round the groove 13 in the base-plate, as shown in dottedlines in Fig. 4.
Patent GB-212587-A (GB)
Title: Hob, method of making it and worm making process
IPC: B23F21/16
Filed: 1922-09-11
Abstract: 212,587. Marks, E. C. R., (Gould & Eberhardt). Sept. 11, 1922. Gear-cutting; milling-cutters. - A hob for cutting a worm &c. comprises a number of finishing teeth of full size arranged on a helical path, while the remaining teeth, the tops of which are located at progressively increasing distances from the hob axis act as roughing- teeth and are provided with serrations. In order to avoid interference one side of each of the roughing-teeth is arranged on a helical path having a lead slightly greater than that of the finishing- teeth. The method of making such a hob comprises the steps of firstly cutting a helical thread having a cross sectional contour obtainable from a fly-cutter, secondly ascertaining the path of interference of this hob thread when imagined to be in working relation with the worm, thirdly determining the form and dimensions of a secondary helical locus which if subtracted from the primary helix would eliminate the interference, and finally recutting the primary helix using the precalculated lead and contour of the secondary helix. In an example given in the Specification the cutting of a four threaded worm of given dimensions, with a 30‹ pressure angle by means of a single threaded hob is considered, the path of interference being obtained graphically. A projection of the worm helix is first drawn and from this is derived the profile of a fly cutter which would cut the desired worm. To ascertain the interference which would result if such a profile were employed for the entire length of the hob helix the diagram shown in Fig. 12 is constructed wherein the hob is assumed to have 12 teeth per convolution and the successive relations attained between the hob teeth of the derived section and the helicoidal groove of the worm as the blank and hob are relatively rotated are represented. From this diagram it appears that the regions of interference (which are shaded in Fig. 12) only occur on one side of the cutting- edge and further that no interference occurs in the last four teeth. Thus by recutting the helicoid of the hob on one side only using a lead somewhat longer than the theoretical lead all the interfering-portions will be removed, the amount of the auxiliary lead being obtainable from the diagram. In order to distribute the cutting action among the hob teeth the teeth are of increasing height as shown in Figs. 1 and 2 so that each tooth removes approximately the same amount of material. The last four teeth, however, F<16> - - F<19> are not deformed and act as finishing-teeth. Some of the roughing-teeth may be notched on their periphery in order to break up the chip. To facilitate accurate mounting of the hob, the side walls W, W<1> and the key seat Z are accurately located with respect to the hob helix.
Patent GB-1049752-A (GB)
Title: Improvements in or relating to the manufacture of heat exchangers
IPC: B23K1/08
Filed: 1963-06-21
Abstract: 1,049,752. Making heat exchangers; soldering. S.A. DES USINES CHAUSSON. June 21, 1963 [July 9, 1962], No. 24814/63. Headings B3A and B3R. A method of making a heat exchanger comprises assembling tinned fins to tinned tubes, fitting a lower collector having flanged apertures over the ends of the tubes, expanding the tubes therein, pickling the assembly in a flux bath, tilting the assembly to remove excess flux therefrom by gravity or an air jet applied thereto, differentially heating the vertically disposed assembly by passing it through successive preheating and soldering chambers which extend to half the height of the assembly to effect soldering of the lower half thereof, air cooling the assembly, turning it through 180 degrees, attaching the upper collector to the tubes and differentially applying heat to the upper half thereof to effect soldering as before followed by accelerated cooling. The collector may be coated with soldering material by steeping in a bath or by an atomized spray. Alternatively, a thin perforated sheet of material may be inserted between the tubes and collector flanges on assembly. Hot air jets and one or more jet burners may be housed in the chambers to effect heating of the fin and tube portions and the collector respectively to effect soldering thereof. A blower unit may be positioned at the exit of each chamber to remove excess solder. The operations are preferably conveyerized with the process line having an in-line, looped or L1-shaped layout.
Patent GB-443377-A (GB)
Title: Improvements in or relating to the delivering of charges of powdered or granular materials
IPC: G01F11/24
Filed: 1934-08-29
Abstract: 443,377. Hoppers. PARNALL, J. B., and VEITCH, W. W., 75, Mark Lane, London. Aug. 29, 1934, No. 24831. [Class 78 (i)] [See also Group XVIII] Apparatus for delivering measured quantities of powdered or granular material comprises a feed hopper q communicating with a channel r terminating in an adjustable outlet p<6> from which the material is fed in a film or layer on to a plate a having a discharge opening a<1> and revolving over a stationary plate c having a larger discharge opening c<1>, the layer of material being collected or heaped up by a scraper device v until the opening a<1> registers with the opening c<1>, thus allowing the discharge of the heaped material by way of a shoot w. The hopper q is mounted on a cover o from which depends a chamber p having a side outlet to the channel r which is defined by walls p<1>, p<2>, p<3> and p<4>. A plate s pivoted at s<1> between the walls p<2>, p<3> and adjustable by a screwed rod t controls the outlet p<6> of the channel rand consequently the thickness of the layer fed to the plate a. The outlet from the chamber p may also be adjustable. The plate a has a peripheral bounding wall b and is mounted on a shaft e rotated through gearing g, h from a shaft j adapted to be connected to a driving pulley through a manually operable clutch. If desired the shaft e may extend into the hopper and carry an agitator device.
Patent GB-1317733-A (GB)
Title: Method of preparing decorative surface coverings
IPC: B44C1/00
Filed: 1970-05-22
Abstract: 1317733 Coating ARMSTRONG CORK CO 22 May 1970 [23 May 1969] 24836/70 Heading B2E Decorative surface coverings are produced by applying a plastisol to a backing sheet to form a plastisol layer of given thickness, then distributing uniformly a quantity of given thickness chips to the upper surface of the plastisol, heating to change the viscosity of the plastisol and permit the rapid settling of the chips into the plastisol until they come into close proximity with the backing sheet, the ratio of the quantity of plastisol per unit area to. the quantity of chips per unit area being chosen such that either the chips are partially submerged or completely submerged within the plastisol. Suitable backing materials are sheets of woven fabric and impregnated felted fibres, sheets of thermoplastic or elastomeric resinous compositions. The chips may be broken down sheet stock comprising polyvinyl chloride, plasticizer and stabilizers. The plastisol may comprise polyvinyl chloride, plasticizers and stabilizers. As shown in Figure 1 web 2 of backing material is fed past nozzle 4 depositing a layer of plastisol 6. Alternatively, dispensing apparatus 4 can be a roller coater. A hopper 8 distributes the chips 10 uniformly on the upper surface of the plastisol layer (alternatively dispensing apparatus 8 could be a stencil type of dispenser). Heating means 12 causes the chips to sink into the plastisol. Planishing can also be used to force the chips into the plastisol layer. The structures may be used as floor coverings.
Patent GB-1205955-A (GB)
Title: Dispensers for pressurised liquids
Inventor: BILLINGTON ARTHUR ERNEST
IPC: B05B9/04
Filed: 1967-05-30
Abstract: 1,205,955. Valves. BEECHAM GROUP Ltd. 29 May, 1968 [30 May, 1967], No. 24844/67. Heading F2V. [Also in Division F1] A dispenser for dispensing a pressurized liquid, e.g. carbonated beverage, from a can 5, comprises a holder 1 with a handle 3, a fixed hook 2 and a retractable hook 7 engageable beneath the rim 6 of the can and a piercer 12 and outlet valve 11 mounted on the holder. Piercer 12 is hollow and surrounded by a sealing pad 13. When valve 11 is opened, the can contents are discharged through the piercer and the valve. Hook 7 is retractable by a trigger 10 against a spring 9.
Patent GB-601477-A (GB)
Title: Improvements relating to dielectric compositions
IPC: C04B35/468
Filed: 1945-09-25
Abstract: Refractory compositions with high dielectric constants comprise a fired mixture of a major amount of barium titanate with a minor amount of a zirconate of magnesium, calcium, strontium or barium, preferred compositions having less than 20 parts by weight of zirconate for each 100 parts of titanate.  Specification 590,583 is referred to.
Patent GB-374340-A (GB)
Title: Improvements in selector tuning devices for radio receiving sets
IPC: H03J1/04
Filed: 1931-09-04
Abstract: 374,340. Adjusting wireless apparatus. FABBRICA ITALIANA MAGNETI MARELLI, 22, Corso Venezia, Milan, Italy. Sept. 4, 1931, No. 24898. Convention date, Sept. 23, 1930. [Class 37.] Indicating mechanism for radio receivers having wavelength switching arrangements comprises a dial provided with a number of scales, together with a screen operated by the wave-change switch and having slots registering with the scales and with an opening in the radio panel, the screen rotating about the axis of the dial. The slots in the screen may be at the same or at a different distance from the axis of rotation The screen 10 is mounted loosely on the drum 5 behind the dial 6 which registers with an opening 20 in the panel 21. Illumination is effected by a lamp 7 through an aperture 8 in a stationary frame 9. The screen slots are provided with coloured plates, the scale lines being similarly coloured. The screen is operated by a member 15 which also effects the wave-changing gear.
Patent GB-170566-A (GB)
Title: Improvements in steam locomotives with a condenser and a reflux cooler
IPC: B61C1/12
Filed: 1921-09-21
Abstract: 170,566. Krupp Akt.-Ges., F. Oct. 18, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Cooling water by direct contact with cooling- media.-The condenser cooling-water of a steam locomotive is cooled by contact with a current of air produced by fans or blowers driven from steam turbines or from the axle of the vehicle. The cooling structure may be mounted on the locomotive or on a separate tender. In the latter case, the coal bunker is at the front of the tender over the water tank, which also extends at the sides of the cooling structure. The warm water is led from the condenser through a pipe D to radial spray pipes d<2> at the tops of compartments b<3> formed by longitudinal and transverse partitions b<1>, b<2>. The compartments are open at the top and are filled in the usual way with material presenting a large trickling surface, and air is forced into the compartments below a perforated base b<4> by fans F. The collecting-tank A<2> for cooled water is divided into two parts by a longitudinal girder C of the frame, and the water is returned through pipes E to the condenser.
Patent GB-302418-A (GB)
Title: Improvements in vacuum electric tube devices
IPC: H01J19/38
Filed: 1927-09-23
Abstract: 302,418. Robinson, E. Y., Hubbard, E. J. E., and Metropolitan-Vickers Electrical Co., Ltd. Sept. 23, 1927. Vacuum tubes.- Electrodes and grids for vacuum tubes are made of wire gauze strengthened by welding the warps and wefts together at several points, preferably along parallel lines running at 45‹ to the warps and wefts. Fig. 2 shows such a piece of gauze welded along the lines 4, 5. The gauze so strengthened may be shaped into a cylinder, as shown in Fig. 1, and welded to supports 1, 1, preferably also at an angle of 45‹ to the warps and wefts. Other shapes of electrodes and grids are described.
Patent GB-954699-A (GB)
Title: Improvements in and relating to electrical counting apparatus
Inventor: BARBER DEREK LESLIE ARTHUR
IPC: H03K21/00
Filed: 1960-07-19
Abstract: 954,699. Counters. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 19,1961 [July 19, 1960], No. 25170/60. Heading G4A. A binary counting chain includes a number of bistable devices giving continuous outputs between counting pulses, said devices being fed in parallel from a clock pulse source via associated gates, each gate requiring simultaneously a "1" output from every one of the preceding bi-stable devices. Clock pulses are fed from a common line PL to gates 2G-NG, each of which is operative only when it receives a "1" output from everyone of the preceding bi-stable devices 1B-(N-1)B, as the case may be. A delay line such as 1DL is inserted in the feed to each gate to ensure that one clock pulse shall not operate a succession of bi-stable devices. Indicating state of count. A signal pulse S pulses clear line CL and sets HB to 1 to pass a clock pulse of opposite phase to read-out gates 1RG-NRG whereby holding bi-stable devices 1HBNHB are set up according to the count. An indication is then provided by appropriate devices 1DND. Transfer. The "O" output of (N-1)B controls a further bi-stable device NB'. NB and NB<SP>1</SP> feed add and subtract gates leading to AB and also gates 1EG, 2EG so that positive and negative transfer to the next denomination can take place over leads 3T or 2T respectively. Application to movement of diffraction gratings NB and NB' produced #1-#4 which open gate 1PG-4PG, respectively. Light from a collimator is passed via a pair of diffraction gratings to photo-electric cells 1PC-4PC in the manner described in Specification 952,734. While the gratings are stationary the sequential opening of gates 1PG-4PG produces square waves on wire CW which is transferred to a sine wave. If relative movement of the gratings occurs the phase relationship between #1 and the output on CW alters. The resultant signal pulse S obtained once per scanning cycle of the photo-cells depends on this phase relationship so that the relationship between the gratings is indicated in wavelengths by the counter fed by 2T, 3T and in fractions of wavelengths by 1D-ND. Reference is also made to Specification 932,471.
Patent GB-1085800-A (GB)
Title: Improvements in or relating to shot-blasting and like equipment
Inventor: HIBBS JOHN BRIAN
IPC: B24C5/08
Filed: 1965-06-15
Abstract: 1,085,800. Blasting. BRITISH STEEL CASTINGS RESEARCH ASSOCIATION. June 10, 1966 [June 15, 1965], No. 25187/65. Heading B3D. [Also in Division H1] Shot-blasting equipment for use with ferromagnetic blasting particles comprises a rotor having a face normal or substantially so to its axis, the face containing the symmetrically disposed pole faces of at least one magnet and means for feeding near to the centre of the face particles to be held to the face by magnetic attraction so that they rotate with the face and are carried to and flung from the periphery of the face by centrifugal force arising from the rotation of the rotor. A shaft 2 rotated by V-belt drive to a pulley 17 carries rotors 1A, 1B consisting of mild-steel backing plates 12 carrying coils 13, pole plates 14 and slip rings 18 for the coils. Spout blasting medium and material removed from the workpieces are passed by an elevator (7) to a separator (8), the re-usable medium passing through a demagnetizing coil (10) to remove residual magnetism and thence to a bore 9 extending from one end of the shaft 2 having slots 20 in register with the gap 15 between the rotors. The polepieces may be sector-shaped (25, Fig. 5) or concentric (25A, Fig. 6) with flexible sealing members (26, Fig. 5 or 26A, Fig. 7) therebetween to exclude shot. Permanent magnets may be used. To control the arc of discharge from the rotors the medium may be supplied through a single slot in a non-rotating member in register with the gap 15; a rotating impeller may be mounted within the slot-containing member. If a single rotor is used the supply pipe (11) is suitably orientated. The direction of flinging may be controlled by a pick-off magnet. A permanent magnet (27, Fig. 8) narrow enough to enter the gap between the rotor faces is carried by a block (28) mounted between arcuate plates (29) with arcuate slots (30) for adjustment of the magnet. The magnet has a mild steel pole-piece 31 with a projection having one face (32) radial and another edge (33) inclined to concentrate the magnetic field.
Patent GB-296569-A (GB)
Title: Improvements in sliver cans
IPC: B65H75/16
Filed: 1927-09-24
Abstract: 296,569. Stott, J. W., Walker, W., and Carruthers, J. E. Sept. 24, 1927. Rims of openings.-The top of a sliver can of vulcanized or compressed " fibre " is reinforced by folding the material outwardly over an endless ring B of the section shown.