baber/WOPTO huggingface dataset:
Patent GB-770876-A (GB)
Title: Improvements in or relating to sheet feeding devices for printing and the like machines
IPC: B65H5/24
Filed: 1954-03-03
Abstract: 770,876. Feeding sheets. SCHNELLPRESSENFABRIK AKT-GES HEIDELBERG.. March 3, 1954 [April 11, 1953], No. 6259/54. Class 100(1) Sheets 2 are separated from a stack by suckers 22 which present them to grippers 8 carried by endless chains 5 driven intermittently through gearing and a Geneva drive 13, 14. Several grippers 8, spaced transversly and fixed to a common shaft 9, protrude through longitudinal slots in a curved feed table 3, and feed a sheet over the table and release it in a position where it is adjacent front and side register abutments. The sheet is registered and then fed to the impression cylinder 1 of a printing- machine by oscillating grippers 23. The sets of grippers on the chains are spaced apart a distance less than the length of the sheets whereby the sheets are fed in overlapping formation. The cross-shafts 9 of the gripper sets have arms 10 secured thereto which are provided with rollers 11 running in guide tracks 12, whereby the grippers 8 follow the contour of the table 3 and always face in the same direction, i.e. towards the stack. Blasts of air or other gas blown upwardly through holes in the table 3, float the sheets and prevent printed sheets being smeared by contact with the table. Specification 770,877 is referred to.
Patent GB-471419-A (GB)
Title: Improvements in or relating to water or like taps
IPC: F16K1/50
Filed: 1936-03-02
Abstract: 471,419. Valves. GREY, H. March 2, 1936, No. 6280. [Class 135] The valve jumper of a screw down tap is prevented from rotation by the provision of a tongued washer 5, the tongue 6 of which projects into the spout 9 of the tap. The washer 5 is secured to the jumper disc 3 together with the usual leather washer 7.
Patent GB-1374695-A (GB)
Title: Range finder
IPC: G02B7/32
Filed: 1972-02-10
Abstract: 1374695 Automatic focusing EASTMAN KODAK CO 10 Feb 1972 [10 Feb 1971] 6284/72 Addition to 1270596 Heading H4D In a rangefinder where range is determined by sweeping a light beam across the target and comparing reflected light received at two adjacent detectors, the range is indicated when the intensity difference reaches a predetermined value within a predetermined time after it reaches zero. In a modification of the camera range finder described in Specifications 1,270,596 and 1,270,597 the differential outputs of the two photodiodes 51, 52 are passed by logic 78 where timing circuit 90 produces a pulse signal at the zero-crossing (i.e. diodes equally illuminated) and detector 92 produces a pulse when the differential output falls below a given threshold. The output pulse from circuit 90 is made long enough to ensure coincidence of the gate 91 inputs for valid targets only.
Patent GB-125497-A (GB)
Title: Improvements in and connected with the Construction of Ferro-concrete Ships and like Vessels.
Inventor: FAIRBRASS HERBERT
IPC: B63B3/26
Filed: 1918-04-15
Abstract: 125,497. Fairbrass, H. April 15, 1918. Concrete ships and vessels.-A concrete ship has transverse frames provided with slots each adapted to receive a series of longitudinal reinforcing rods or bars connected together between the frames and held in the slots by further longitudinals or other metal parts. In the form shown in Fig. 7, the frame 19 has T-shaped slots 30 adapted to receive flat longitudinals 20, 21 joggled at 22 to receive other frame members, and at 20<a>, 21<a> to receive vertical rods. The rods may be securecl in the joggles by tongues bent out of the bars. Fig. 4 shows the bars held in the slots by metal clips 15. In another form, round longitudinals are twisted together between the trans. verse frames or connected together by a plate 34 formed with sockets 35 as shown in Fig. 9. The slots may be formed by bending tongues out of the transverse frames. According to the Provisional Specification, the slots may be formed in brackets secured to wooden frames, the reinforcing-rods may pass from the outside of one frame to the inside of the next, and the concrete may be applied in one, two, or three layers of varying grades of fineness.
Patent GB-146800-A (GB)
Title: Improvements in screens for sifting purposes
IPC: B07B1/12
Filed: 1920-03-02
Abstract: 146,800. Wullstein, H. F. March 2, 1920. Sieves and screens, forms and construction of.-A screen for granular material comprises an open frame 1 carrying a number of parallel bars 9, 9<a>, Figs. 1 and 2, of uniform cross-section and with alternate bars diverging vertically from the others towards their free ends. The bars are provided with eyes 12 engaging rectangular shafts 6, the ends of which are located in sockets 4 in the lower sides of grooves 3 in side bars 2 of the frame. The shafts are held in place by plates 7, which also serve to protect the sides of the frame from wear. The eyes 12, preferably separated by washers 13, are held against movement on the shafts by angular bars 14, one edge of each of which is secured by soldering to the eyes, while the other edge is provided with ears 15 through which certain of the bars 9 pass. The bars are convenientlv stamped from sheet metal and are formed with ribs 10 which serve to support the free ends of the bars 9, 9<a>. In a modified construction, Fig. 5, straight bars 9<b> are used instead of the bent bars 9<a>, and their free ends are left unsupported.
Patent GB-698114-A (GB)
Title: Improvements in or relating to apparatus for measuring the content of a substance ina fluid
Inventor: ROGERS EDWARD
IPC: G01N27/00
Filed: 1949-03-08
Abstract: <PICT:0698114/III/1> Apparatus for measuring the amount of a substance present in a fluid by reacting therewith a reagent the electrical conductivity of which is changed by the reaction, comprises a contact chamber 1, means, e.g. pump 2, for passing a stream of the fluid through the chamber, means, e.g. pump 8, for passing the reagent through the chamber at a rate proportional to the rate of flow of the fluid, and means, e.g. cells 12, 13, for comparing the electrical conductivity of the reagent with the electrical conductivity of the product of the reaction.  When used to detect hydrogen sulphide and sulphur dioxide in a gas used in steel making, the gas enters at 4 and is brought into contact in tower 1 with bromine water supplied from reservoir 5 via tube 6.  The constant volume rotary gas pump 2 is provided with a cam 11 which closes and opens contacts 10 in the circuit of the winding 9 of electromagnetic pump 8 (see Group XXVIII) which passes bromine water through tube 6 to the top of tower 1 at a rate proportional to the rate of gas supply; tubes 35, 36 maintain a constant pressure head across the pump 8.  Heat exchanger 18 ensures that the bromine water is at the same temperature before and after reaction.  The conductivity cells 12, 13 may be connected in a Wheatstone bridge provided with an automatic balancing potentiometer as described in Specification 597,410, [Group XXXVI], the A.C. supply to the potentiometer circuit may be in series with a second bridge which includes the temperature compensating resistance 17.  The apparatus may be made of glass or plastic, and may also be used to detect solid or liquid particles in a gas, or to detect constituents of liquids by reaction with gaseous or liquid reagents.
Patent GB-506689-A (GB)
Title: Improvements in elastic band connections
IPC: A41F9/00
Filed: 1938-03-01
Abstract: 506,689. Belts, braces, &c. FORSTNER, W. March 1, 1938, No. 6420. [Classes 43 and 141] The end fittings 11, 13, of an elastic belt &c. 10 formed from rows of loop coils of wire, are each attached thereto by a connector 15 comprising a bottom plate 16, formed with prongs 18, 19 which engage the coils of the band and the end fitting, and a separate top plate 17 secured to the bottom plate by tabs 24 which take into recesses 22 therein.
Patent GB-822317-A (GB)
Title: Improvements relating to warp knitting machines
Inventor: PORTER ALLAN WILLIAM HENRY
IPC: D04B23/00
Filed: 1957-02-26
Abstract: 822,317. Making thread guides for knitting- machines. F.N.F. MACHINERY MANUFACTURING CO. Ltd. April 3, 1958 [Feb. 26, 1957], No. 6455/57. Class 83 (2). [Also in Group VIII] In a flat warp knitting-machine, the warp thread guides pass not between the needles but over them and are so shaped that each warp thread moves through its thread guide in a plane parallel to the planes in which lie the needle hooks, instead of being forced into an S-shape as in conventional guides. In one embodiment (Fig. 6) the edges of metal sheets are bent into channel-shaped sections 41, 42 and a series of slots 43, 44 are milled into the bottom of the channels. In another form (Fig. 7) tubes 46 are cast side-by-side into blocks 50 and are open at their lower ends 47 and have openings 48 milled into their side walls. In a third form (Figs. 8, 9), loops 51 of wire are formed in pairs and cast side-by-side into a metal block 53.
Patent GB-713642-A (GB)
Title: Improvements in or relating to drawing and/or writing nozzles
IPC: B43K8/00
Filed: 1951-03-19
Abstract: 713,642. Reservoir pens. GEY, L. March 19, 1951 [March 18, 1950; Dec. 7, 1950], No. 6472/51. Class 146(3) A drawing or writing nozzle for insertion into a reservoir pen comprises a cylindrical member 1 having an axial bore 14, two or more convergent flat surfaces sloping toward the writing end, and a plurality of longitudinal slits extending from the writing end to connect with the axial bore. As shown, three surfaces 4, 5, 6, Fig. 6, converge at different angles towards a triangular flat surface 2, while slits 7, 8, 9 parallel to the edges of the surface 2 connect with the bore 14. The edges of the surface 2 provide writing surfaces of different length, these edges projecting longitudinally beyond the outer edges of the slits 7, 8, 9 which also constitute writing surfaces. The nozzle, which may be of brass or rustless steel, has a portion 13, Fig. 1, screwed into the barrel 16 which includes a hollow piston rod 17, a piston 18, and a preferably rubber packing ring 21. A choke member 24 screws into the bore 14, such that the size of the choke opening may be varied to control the flow of writing liquid.
Patent GB-549523-A (GB)
Title: Improvements in or relating to engine governing means
IPC: F01K7/34
Filed: 1941-05-21
Abstract: 549,523. Fluid-pressure servomotor control systems. CHORLTON, F. O. L. May 21, 1941, No. 6510. [Class 135] [Also in Group XXVI] In a steam plant providing steam for power and also steam at lower pressure for heating and process purposes at a lower pressure such as exhaust steam alone or mixed with steam independently generated, the engine steam supply is governed in accordance with the pressure of temperature in the process steam main T. This pressure may act on a piston L to control the supply e.g. of the engine lubricating oil through passages O, R to the cylinder of a piston G forming the abutment of the loading spring of a governor A which controls the engine throttle valve E. The rod of the piston G may act on a lever to which the throttle rod D is connected, the piston rod being either also connected to the lever or acting on a bell-crank to alter the position of its fulcrum. In the latter case the spring may act on the lever in place of the piston or may be replaced by a weight hung on the lever. The piston may be replaced by a diaphragm or metallic bellows.
Patent GB-1306671-A (GB)
Title: Piezoelectric igniter element for explosive compositions
IPC: F42C11/02
Filed: 1965-02-15
Abstract: 1306671 Igniter DYNAMIT NOBEL AG 15 Feb 1965 [21 April 1964] 6523/65 Heading F3A  A piezoelectric igniter element for an explosive composition, more especially for a hollowcharge mine, has a piezoelectric element 1, e.g. of barium titanate, made conducting on two opposite surfaces 2, 3 by a thin metal or graphite coating, which coating is continued over a narrow side of the element between the two opposite surfaces, being only interrupted by a narrow gap 5 into which a priming composition 6 is pressed. The priming composition 6 may, for example, be silver azide, lead azotetrazole or a lead picrate. When pressures of suitable magnitude act on the opposite surfaces 2, 3, corresponding electric charges are formed on these surfaces which are neutralized through the priming composition 6, whereby ignition occurs. According to the sizes of the charges produced and the width of the gap 5, this ignition is initiated by a spark jumping over between the two charges or by a suitably strong heating effect along the gap. In certain circumstances, the formation of a fine fissure by means of a needle is sufficient for the gap, the two conducting coatings being connected to one another by means of narrow bridges along the gap. When the charges are neutralized there is a strong heating effect at these bridges and, when using metal coatings, fusion occurs. On the other hand, a comparatively wide gap may be formed and filled with a priming composition made semi-conducting by the addition of colloidal graphite. The narrow side (4) of the element may be in the form of a cup-like depression so that an autoelectric primer cap is thereby produced. By pressing on another charge, e.g. an intensifier charge, this primer cap is converted into an autoelectric detonator cap. Since the igniter element only responds when pressure is applied to the piezoelectric element simultaneously from two sides, it can with particular advantage be used with those arrangements with which an ignition is to be initiated only when signals are given simultaneously from two positions which are spaced apart. For example, when using hollowcharge mines, such may be the case with the object that when a tank is travelling through a field of such mines, the tank only releases a mine when this is between the two tank tracks, i.e. directly beneath the tank. The pressure may be applied without the use of metal, by hydraulic means for example, thus rendering the arrangement non-locatable.
Patent GB-1465472-A (GB)
Title: Fluid control valves
IPC: F16K27/06
Filed: 1974-02-07
Abstract: 1465472 Valves SHIPSTON ENG CO Ltd 7 Feb 1974 [9 Feb 1973] 6536/73 Heading F2V A rotary spherical plug valve, has a valve body 1 received in a fixed manner within an aperture 7 in a coupling member 6 provided for connection in a pipe-line so that the piping has no direct connection with inlet and outlet ports 22, 23 in the valve body. The valve is held in the coupling by a screw-threaded boss 24 and a threaded clamp ring 25 retained on the coupling by lugs 26 which engage a groove 27 in the clamp ring. The valve body has inclined sealing faces 2 tapering to give it a wedge form. Removable seating rings 16, 17 are retained in the valve body by retaining rings 18, 19 having inclined faces co-planar with the sealing faces 2. In a modification, Fig. 3 (not shown), the spherical plug is provided with a drainage groove (30) on its surface so that when the valve is closed the outlet side of the valve is vented, via a passage (28) in the valve body and the central hole in the clamping ring 25. In further modifications (not shown) provision is made for fixing the coupling member to a similar member containing a component controlled by the valve or for fixing the component in a further aperture in the coupling member.
Patent GB-558452-A (GB)
Title: Improvements relating to photographic materials
IPC: C07C37/07
Filed: 1942-04-21
Abstract: 558,452. Photographic sensitive materials. KODAK, Ltd., and KNOTT, E. B. (Eastman Kodak Co., and Staud, C. J.). April 21, 1942, Nos. 6575/43 and 6576/43. Divided out of 558,099. [Class 98 (ii)] The tendency for a sensitizing dye to wander from a dye-sensitized silver salt emulsion to a neighbouring silver salt emulsion, the two being coated in superposed layers, is reduced by disposing between them an intervening layer of a sensitive silver salt emulsion which is slower and of finer grain than either. Both emulsions may be dye-sensitized. The slow emulsion may be a Lippmann type emulsion and may have a threshold speed of not more than a fifth of that of the slower of the other emulsions. All three may be silver bromide or all three silver chloride emulsions. The finer the grain of the slow emulsion, the less the quantity that is usually necessary. In Example 1, a gelatino silver halide emulsion sensitized with 1<SP>1</SP>: 2-diethylthia-4'-carbocyanine iodide is coated on two similar film supports, and in one case a clear gelatine layer is applied and in the other a layer of the same thickness of a Lippmann type emulsion. An emulsion similar to the first but not dye-sensitized is then applied in both cases. On exposing both films from the front in a wedge spectrograph and processing, an image in the red region of the spectrum was found in the non-dye-sensitized emulsion only in the film with a clear gelatine layer. In Example 2, the procedure was similar using the sensitizing dye 3-ethyl-5-(3-methvl-2- thiazolinylidene-ethylidene)-rhodanine. Specifications 524,552, 532,098, 540,451, 540,464, 544,134 and 555,699 are referred to.
Patent GB-1028366-A (GB)
Title: A latch assembly comprising a rotatable latch bolt adapted to be actuated by handles
IPC: E05C3/10
Filed: 1963-02-19
Abstract: 1,028,366. Latch fastenings. AHRENDLIBRA N.V. Feb. 19, 1963 [Feb. 22, 1962], No. 6662/63. Heading E2A. A latch assembly comprises a casing 7, a rotatable latch bolt 6 releasable from a keeper by handles 19 on each side of the casing, a shaft 8, rotatable about its longitudinal axis, secured to the bolt and equipped with a spring 11 tending to keep the bolt in the latching position, the shaft having a follower 12 projecting into a recess of the casing which casing surrounds the shaft with the follower being adapted to be moved to the releasing position by an actuating member from outside the casing through the recess in the casing, in which the actuating member is spring biased and slidably arranged on a rod 18 connecting the handles which are rotatably mounted in door roses 20, 21 and has at one end a cam 25 co-operating with the follower and at the other end one or more cams 26 co-operating with one or more fixed cams 27. In the construction shown a plurality of cams 26 and 27 are provided and the cams 27 are part of one of the roses 20. The actuating member is biased by a spring 23 which is trapped between the member and the other rose 21. Rotation of the actuating member and hence of the handles is limited by means of abutments which engage abutments of a sleeve 16 which is positioned between the two roses and through which the rod 18 passes. The casing 7 has lips 15 which engage slots in the sleeve 16 to hold the sleeve and casing in engagement.
Patent GB-589190-A (GB)
Title: Improved tool for extracting timber piles or the like
IPC: E02D9/02
Filed: 1945-03-17
Abstract: 589,190. Withdrawing piles. HOLMES, A. B. March 17, 1945, No. 6752. [Class 68 (ii)] A tool for extracting wooden piles, comprises a frame 10, carrying pivoted serrated eccentric jaws 14, which open as the tool is lowered on to the pile, and close as the tool is lifted. The jaws are geared together as at 17, to move in unison.
Patent GB-724564-A (GB)
Title: Improvements in or relating to electrical capacitors
Inventor: GIRLING DOUGLAS STACEY
IPC: H01G4/22
Filed: 1953-03-12
Abstract: 724,564. Electrical capacitors. STANDARD TELEPHONES & CABLES, Ltd. March 12, 1953, No. 6839/53. Addition to 693,062. Class 37. A condenser unit which as described in the parent Specification is impregnated with and embedded in a thermosetting resin has the outer casing made of metal and hermetically sealed to afford an additional protection against moisture.
Patent GB-540454-A (GB)
Title: Automatic gain control system
IPC: H04N5/52
Filed: 1940-04-16
Abstract: 540,454. Automatic volume control. PHILCO RADIO & TELEVISION CORPORATION. April 16, 1940, No. 6850. Convention date, May 24, 1939. [Class 40 (v)] In a composite signal system employing a signal having components established on opposite sides of a predetermined amplitude level, a signal channel means for deriving a signal from said channel, a gain control valve operable by said described signal, means for causing the effective anode current of said valve to decrease rapidly and abruptly from a substantial value to cut off, means whereby the operating conditions of said valve can be adjusted so that said amplitude level is normally slightly above the cut-off point of the valve, to render the valve fully responsive to one of the said signal components and but slightly responsive to the other component, thereby to obtain an output signal which is substantially independent of variations of the other signal component, and means for applying the output signal to the signal channel to control the gain thereof. Fig. 1 shows the invention applied to a television receiver. The control signal is taken from the LF. output and is applied to the grid of a triode 9 across a leak resistor 10 connected to a source of negative bias 11. The cathode is slightly less negative, being connected to the centre tap of a voltage divider 12, 13. The plate load resistor 16 is connected by a smoothing filter 18, 19 to the anode of a diode 20 from where the A.V.C. voltage is fed over a line 21 to the I.F. amplifier or earlier stage. Until the signal applied to the grid of valve 9 is sufficiently large to cause the plate to go negative, no negative control voltage is developed across condenser 19 but when the plate goes negative diode 20 ceases to conduct, and condenser 19 is charged through resistor 18. When the signal declines condenser 19 discharges until another signal peak occurs to drive the plate of valve 9 negative. Curves are shown to demonstrate that this arrangement gives a control voltage which is large relative to the change in signal amplitude and as applied to a standard television signal serves to maintain the blanking level and the amplitudes of the synchronizing pulses constant. The use of the diode 20 introduces a delay action which may be varied by altering the bias of the diode. Specification 537,856 is referred to.
Patent GB-625191-A (GB)
Title: Improvements in and relating to framed mirrors or like articles
IPC: A47G1/02
Filed: 1947-03-12
Abstract: A water-hardenable substance is cast or moulded round a mirror to form a frame.  The substance may be plaster of Paris, Keen's or Sorel's cement and/or magnesium oxide, with a synthetic resin, such as urea-formaldehyde, and a catalyst.  An example comprises plaster of Paris, water and urea-formaldehyde in stated proportions.  A chain, clip or other support for the finished mirror may be embedded in the substance while still soft.  The mirror may be bevelled at its edges to key it into the forme. Where a high-quality substance is used, economy is effected by inserting filling pieces of a low-quality material.
Patent GB-854164-A (GB)
Title: Process for the preparation of highly crystalline polyethylene of pre-established degree of polymerisation
IPC: C08F10/00
Filed: 1957-03-04
Abstract: Ethylene is polymerized in the presence of a solvent and hydrogen, and using a catalyst derived from a crystalline compound of a Group IVa, Va or VIa metal, the metal having a valency lower than the maximum, and an organometallic compound of a Group II or III metal. Preferred catalysts are TiCl3 \sR AlEt3 or Et2AlCl.