baber/WOPTO huggingface dataset:
Patent GB-597885-A (GB)
Title: Improvement in electronic control apparatus
IPC: G05B11/01
Filed: 1944-11-21
Abstract: 597,885. Regulating liquid levels. PHOTOSWITCH, Inc. Nov. 21, 1944, No. 23130. Convention date, Aug. 20, 1943. [Class 123 (i)] [Also in Group XL] An electronic relay circuit comprises a valve having a control circuit connecting the control grid of the valve to the negative H. T. supply, and a controlling circuit which is supplied with alternating current via a transformer, and is coupled to the control circuit, and a variable impedance which is insulated from the control circuit by a transformer and which controls the distribution of potentials in the controlling circuit, thereby controlling the anode current and the operation of a relay contained in the valve output circuit. Oscillator circuit O is a conventional multivibrator with a tuned anode 'circuit to produce sine wave oscillations in winding L2. When the fluid in tank 1 covers probe 4 the tank-to-probe impedance Z is low and the amplitude of oscillations in winding L3 is too small to affect conduction through valve T3, which energizes relay magnet M. When probe 4 becomes exposed, impedance Z changes to a high value and oscillations build up in transformer L3L4. Grid current flow suppresses the positive half cycles, and the negative half cycles serve to reduce the mean anode current below the operating value of relay magnet M which becomes de-energised and operates an associated inducting device. Alternatively, the operation of the relay may be reversed by placing switch S in position II, when valve T3 becomes biassed negatively to keep relay M de-energised in the absence of oscillations in windings L3L4. Figs. 2, 3, 4 (not shown) illustrate alternative methods of connecting impedance Z into the circuit.
Patent GB-258875-A (GB)
Title: Improvements in and relating to crushers
IPC: B02C2/06
Filed: 1926-09-22
Abstract: 258,875. Mitchell, B. A. Sept. 24, 1925, [Convention date]. Crushers with gyratory heads.-In a crusher having a fixed crusher and a freely gyratory crusher having actuating means coaxial therewith independent means are provided to limit the extent of the gyratory movement, and one or both of the crushers have discharge openings in their working faces; the gyratory crusher is supported by the fixed crusher, which is in turn resiliently supported. The fixed crusher 15, Fig. 1, is supported on a frame 16 carried on rubber cushions 50. The frame supports a secondary frame 28 by adjustable bolts 16a, the frame 28 carrying the motor 33. The gyratory crusher 20 is supported in a bearing 18 and is provided at its lower end with a bearing sleeve 20b co-acting with a sleeve 16f on the lower part of the frame 16 to limit the gyratory movement. This movement is derived. from an impeller 45 driven by an universally-jointed shaft 45a and engaging the crusher 20 through balls &c. 4G running in raceways 48 and received in recesses in the impeller. The movable crusher is provided with a coned lining 25 interacting with a mantle 21 on the fixed crusher. The mantle is provided with vertical slots 21a the width of which is approximately equal to the maximum distance between the mantle 21 and lining 25 where their surfaces most closely approach. The crushed material is discharged through openings 16e. In the form shown in Fig. 7 openings 21f and 25f are provided in both the mantle and lining. The mantle may be made in sections, or, as shown in Fig. 5, the openings 21d may be in the lower part of the mantle, the outer ends 21e being enlarged to discharge through openings 25a in a flange 25b on the lining.
Patent GB-498698-A (GB)
Title: Improvements relating to mechanical scoring devices
IPC: A63F1/18
Filed: 1937-08-27
Abstract: 498,698. Scoring-apparatus for games. BISSET, K. Aug. 27, 1937, No. 23521. [Class 132 (ii)] [Also in Group XIX] A multiple-dial scoring device comprises a set of fingering discs 2 separately pivoted on a base-plate 1, a set of numeral-bearing dials 3 again separately pivoted on the base-plate and each operated by a corresponding disc 2, means 2x on each disc for effecting a transfer to the dial of the next denomination, a front plate 4 having a large window 4a concentrically over each disc 2 and a relatively small window 4x over a portion of each dial 3 sufficient to expose one numeral thereon at a time, a set of numerals 4b being associated with the fingering portions of the discs and a finger stop 4<1> extending over each large window. The transfer tooth 2a; is beak-shaped so as to be effective in one direction only, but when the device is adapted to be used both additively and subtractively this tooth is made symmetrical. To position the dials, spring-controlled rollers 5 press between the pins thereon (not shown) which engage the toothed discs. Zeroizing means for the dials may be provided. Small pointers 6 may be used to indicate the last score.
Patent GB-829454-A (GB)
Title: Improvements in collapsible cardboard and the like boxes
Inventor: WILSHIRE STANLEY VICTOR
IPC: B65D5/462
Filed: 1957-07-25
Abstract: 829,454. Cartons. RUNPRINT Ltd. July 25, 1957, No. 23582/57. Class 18. A collapsible cardboard box has a main closure flap a which is hinged to the top edge of one side and detachably secured to the opposite side and has a slit f extending at right angles from the said edge, and a pair of subsidiary closure flaps g, h hinged respectively to the other two opposite top edges and each provided with an extension i, j which can be pushed through the slit outwardly to form a composite handle. The box as now made up can be flattened for transport and storage, (see Fig. 3) ; tongues c on an extension b of the flap a are engaged in slits d in the box side, and the extension flaps i and j have handholes k, l, together form the handle.
Patent GB-506819-A (GB)
Title: Improvements in or relating to the heating or cooling of flat glass
IPC: C03B25/04
Filed: 1937-08-30
Abstract: 506,819. Heating and cooling sheet glass. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST. GOBAIN, CHAUNY, & CIREY. Aug. 30, 1937, No. 23652. Void. Convention date, Aug. 31, 1936. [Class 51 (ii)] In the heating or cooling of sheet glass the temperature changes in the glass are equalized by means of screens positioned between the glass and the source of heat or cold and movable in planes parallel to the plane of the glass. In the continuous leer shown in Fig. 2, in which cooling of the glass strip 1 is effected by radiation to the roof and floor the screen takes the form of an endless link chain or chains 4 arranged transversely to the strip. The screen is heated by radiation from the glass and by virtue of its movement tends to equalize the temperatures at the upper and lower surfaces of the strip. In a heating furnace in which the glass is sandwiched between opposed banks of heating-elements, an endless screen may surround the glass, or there may be a screen around each bank .of elements. The screen may consist of two sets of chains or strips arranged so that adjacent chains move in opposite directions, and such a screen may have superposed on and at right-angles to it a second similar screen. In the arrangement shown in Fig. 8, the screen 18, consisting of two sets of oppositely-moving chains &c. passes over a source of heat 17 and to and fro around the sheets 1. In another form the screen consists of discs rotating about axes at right-angles to the plane of the glass.
Patent GB-1438896-A (GB)
Title: Device suitable for closing-off a channel such as a water-slope  channel for inland navigation
IPC: E02B7/20
Filed: 1974-05-28
Abstract: 1438896 Closing-off a water-slope channel SOC GENERALE DE TECHNIQUES ET D'ETUDES and J AUBERT 28 May 1974 [29 June 1973] 23658/74 Heading E1H A water-slope channel 1 used for inland navigation has a floor 2, side walls 3 and a retention barrier 6 displaceable between the upstream end 4 and the downstream end 5 of the water-slope. Rollers 13, 14 between the barrier and the channel floor and side walls and seals between the rollers and the barrier limit water infiltration in the channel. Each seal comprises a rigid strip 27 extending along the length of a roller and runner wheels 35 maintain a constant clearance between a strip and the surface of the associated roller.
Patent GB-1474943-A (GB)
Title: Photo-sensitive composition for dry formation of image
IPC: G03F3/10
Filed: 1974-05-28
Abstract: 1474943 Photo-sensitive composition NIPPON PAINT CO Ltd 28 May 1974 [25 May 1973 11 Oct 1973] 23686/74 Heading G2C A photo-sensitive composition for the dry formation of images comprises, in the absence of a polymerizable compound having an olefinic double bond, a dyestuff having a photo-fading property, an aryl ketone compound as sensitizing agent and a high molecular polymer as binder which is compatible with the dyestuff and the sensitizing agent and selected from a polymer containing an N-C bond wherein the carbon atom bears one or more hydrogen atoms, a polymer containing a secondary OH group and a polymer containing a benzene ring bearing at least one of methyl, methylene and methene. Azo, azomethine, triphenylmethane, xanthene, oxazine, naphthol, anthraquinone and cyanine dyestuffs are specified. The aryl ketone compound may be a benzo-phenone, an acetophenone, a benzoin, an acyloin or an α-diketone. The polymer may be a polyamide resin, a urea resin, a urethane resin, a melamine resin, an N-substituted high polymer having acrylamide and/or methacrylamide units, a vinyl acetate polymer or a partially saponified derivative thereof, a polymer of a vinyl monomer having a secondary hydroxyl group, an epoxy resin, a cellulose resin, a butyral resin, an acetal resin, an acrylic resin, an alkyd resin, an unsaturated polyester resin, a copolymer of styrene or a derivative thereof and/or a phenol resin. The sensitivity can be increased by adding aldehydes, amides or thiocarbonyl compounds. The photofading is prevented by the presence of oxygen or air. It is promoted by strong light but not by scattered light in a room. The visible image can be stored in air without fixing. It is eliminated by irradiation  with light of the whole surface or by dipping into weak acid. The compositions can be applied to transparent supports to give materials for the preparation of colour proofs from colour separation negatives. The colour image sheets can then be combined by the over-lay or transfer methods.
Patent GB-1398833-A (GB)
Title: Sealing of containers
IPC: B65B7/16
Filed: 1973-05-17
Abstract: 1398833 Closing, and sealing, containers LOVIDA AG 17 May 1973 [18 May 1972] 23695/73 Headings B8C and B8T A container with a closure lid, for cosmetic and pharmaceutical products, has its mouth inside the lid sealed by means of a foil 6, the lid having in its interior a foil-smoothing portion which, when the lid is completely fitted on to the container, projects slightly into the interior of the latter so as to smooth the foil by pressing it down. As shown, the container is sealed by the foil 6, made, e.g. of aluminium and coated with plastics, and a screw-cap closure 22, having a sealing-and-smoothing insert 13, subsequent tampering of the product being easily detected by placing the foil, which is wrinkled as shown, over the product in the container and securing it to the container upper rim 4, by heat-sealing adhesive, bonding or, by deformation; placing the smoothing-and-sealing insert 13 into the screw-cap 22 and screwing the latter down on to the threads 2 of the container. In this manner the cap 22 clamps an outer rim 16 of the insert 13 and the outer edge of the foil 6 between itself and the rim 4 so that a pressing ring 19 in the insert 13 forms a corresponding depression in the foil 6 to stretch the latter flat, and completely smooth, over the container contents. When a consumer removes the cap 22 from the container, if the latter is sealed by a smoothly stretched foil 6 it can be assumed that the contents have not been touched. The container can be sealed by means of a foil which has been pre-smoothed, e.g by radial pleats, or other profiles, or reliefs. In a manually-operated apparatus for centering a container with respect to a vertically-reciprocable centering sealing tool, not shown, for sealing a foil on to a container, a container is adapted to be clamped between a rear abutment member 35 adjustably secured, by a slot-and-wing nut arrangement 39, 40 in a housing 26 and a sliding member 42 which has a base 43 for supporting the container and which is manually movable, in the housing, toward and away from, the rear abutment 35. In use, the rear abutment 35 is secured in position on the housing 26 according to the size of the containers to be sealed and each filled container is placed upon the base 43 of the sliding member 42 which is then pushed forward so that a forward, spring-loaded, member 45, carried by the member 42, engages, and centres, the container. When the container is fully clamped between the members 35, 45 an abutment 38, on the underside of the base 43 operates a switch 37 carried by the frame 26, to initiate the lowering of the sealing tool. A centering mark (53), Fig. 6, not shown, is provided. The smoothing insert 13 is provided with embossed symbols which are impressed in the foil. A smoothing projection may be provided at the centre of the smoothing insert. Thicker crease-free foils may be employed.
Patent GB-301957-A (GB)
Title: Hypodermic syringe
IPC: A61M5/24
Filed: 1927-09-09
Abstract: 301,957. Smith, A. E. Sept. 9, 1927. Syringes. - In a hypodermic syringe 10 in which the charge is contained in a sealed ampoule 11 the lower end of the ampoule is tapered and provided with a rubber washer 24 which seats in a conical recess 47 in a needle holder 43. The upper cap 29 of the syringe is screwed into the barrel 25 and is provided with telescopic depending members 31, 32, 33 bearing upon and positioning the ampoule through the medium of a spring 34 and a cup-shaped head 35. The syringe plunger 30 passes through the members 31, 32, 33 and bears upon a rubber or like piston 19 within the ampoule, the piston having a washer 20 secured thereto and connecting with the plunger by a projecting nipple 21 engaging a recess 39 in the plunger or a central aperture receiving a nipple on the plunger. The upper and lower ends of the ampoule 11 are weakened to permit breakage before use at points 14, 16. The needle holder 43 is seated in a cap 40 screwed to the barrel 25 and is formed of larger diameter than the needle 46 at its lower end 44 in order to avoid breakage of the needle. Specification 302,265 is referred to.
Patent GB-705212-A (GB)
Title: Improvements in or relating to process and installation for producing birefringent glass products
IPC: C03B25/02
Filed: 1951-10-12
Abstract: 705,212. Birefringent glass. LONG, B. Oct. 12, 1951 [Oct. 18, 1950], No. 23800/51. Class 56 A process for giving a glass product birefringence characteristics which remain unaltered by subsequent cutting or other after working operations, comprises heating the product from room temperature to a suitable temperature within the softening range, applying external forces to the product, cooling, and finally suppressing the action exerted by the external forces after' the product has become solid, the stages subsequent to heating being so controlled as finally to avoid a state of permanent internal stresses due to temperature gradients through the thickness of the product, the action of the external forces being concomitant with at least a portion of the solidifying stage. In one modification of the invention the external forces are applied when the glass is being heated. In a further modification the solidification stage is accelerated and the permanent internal stresses due to thermal gradient are subsequently eliminated by annealing. The effect varies according to the nature of the glass, being appreciable with glasses containing a high percentage of boric oxide, particularly the borosilicates. The percentage composition of three glasses suitable for application of the invention are, (1) SiO 2  66, B 2 O 3  25, Al 2 O 3  2, Na 2 O7, (2) SiO 2  68, B 2 O 3  22, Al 2 O 3  1, Na 2 O 3.5, K 2 O 5.5, (3) SiO 2  71, B 2 O 3  16, Al 2 O 3  2, Na 2 O 2, K 2 O 4, PbO 5. Fig. 1 shows an apparatus for producing a sheet with parallel faces having a central region possessing uniform permanent birefringence, the sheet 1 being heated in a vertical position within the enclosure 2 and simultaneously subjected to a vertical tensioning force by means of a lever 3 through the intermediary of hinged tongs 4, 4a, upper link 5, and fixed lower link 6, the tension being varied by displacing the weight 9 along the lever. The enclosure is heated by an electric resistance 10, and insulated by slabs 11, 15, and heat insulating material 14, e.g. keiselguhr. The tongs include projections 20 of very hard metal which grip the sheet 1. In the apparatus shown in Fig. 4 the thick sheet 21 bears on two supports 22 in enclosure 24 heated by resistance 25 and insulated at 23, 27 and 28. A downwardly directed vertical force is distributed along the transverse axis of the sheet through the intermediary of the knife edge of a fulcrum 29, the force being applied by the weight 32 and lever 33 through a rod 31 connected to the fulcrum. The products may be applied in optics, in the production of polarized light, for producing birefringence compensators, or in mechanical applications by virtue of their higher mechanical strength.
Patent GB-670217-A (GB)
Title: Improvements in or relating to a packaged food product and a method of packaging food products
IPC: B65D77/06
Filed: 1949-09-15
Abstract: 670,217. Packages. SALERNO, G. F. Sept. 15, 1949 [Oct. 19, 1948], No. 23815/49. Class 94(i) A packaged food product comprises an elongated moisture-resistant bag, one end of said bag being permanently sealed and the opposite end being unsealed, and said bag containing a supply of articles, such as crackers (biscuits), disposed in stacked alignment in said bag and only partially filling the same, the said bag having an unfilled portion adjacent its unsealed end whereby to provide a foldable portion adapted to be folded over for closing said open end and protecting the contents of the bag against atmospheric moisture. Square biscuits 17 are stacked in a bag 16 of transparent cellulosic material and which has one end 18 permanently sealed, and the other end 21 is pleated inwardly and folded over but not sealed. The wrapped biscuits are then placed in a cardboard box 11. In filling the bag, it is :placed over an open-ended shoot 27 into which biscuits 17 carried by a moving belt 23 are placed and the filled bag is then moved off by an ejector member 29.
Patent GB-1493778-A (GB)
Title: Pipe handling apparatus in combination with an oil well drilling derrick
IPC: E21B19/15
Filed: 1976-06-09
Abstract: 1493778 Boring earth &c LEE C MOORE CORP 9 June 1976 [11 June 1975] 23824/76 Heading E1F A stand of drill pipe 6 is moved between a horizontal position in front of a derrick 1 and a vertical position in the derrick 1 using a pipe elevator 5 on the travelling block 4 and pipe handling apparatus including a boom 9 which is pivoted at its inner end to a pedestal 10 and which carries a pipe holding arm 11 at its other end, the boom 9 being swung in one direction by a cable system connected to the travelling block 4 and in the other direction by a cable system connected to a counterweight. As described the arm 11 is pivoted to the boom 9 and carries pipe clamps at each end. Each pipe clamp (Fig. 6) include two sets of spring loaded jaws 35, 43, the jaws 35 being moved to their open positions by air motors 41. A pulley 61 is fixed to the arm 11 and is connected by a cable 62 to a pulley 60 which can be held stationary by a brake (not shown). When the arm 11 carries a stand of pipe 6 the brake is released so that the arm 11 is free to swing about its pivot on boom 9. When no pipe 6 is being carried the brake is applied so that as the boom 9 is swung between its two positions the arm 11 automatically assumes a vertical position in the derrick 1 and a horizontal position in front of the derrick 1. In a first embodiment (Fig. 1) the boom 9 is raised by upward movement of the travelling block 4. The block 4 is connected to a line 17 which passes round pulleys 18, 19, 27, 30, 31 and is anchored at pulley 30. Pulley 31 is connected by line 21 which passes around a shoe 22 fixed to arm 24 and is anchored to the boom 9 at 23. A tensioning pulley 27 mounted on the piston rod 28 of air cylinder 29 permits small movements of the travelling block 4 (e.g. when making or breaking the drill string joints) without corresponding movement of the boom 9. The boom 9 is returned to its lowered position by a counterweight 55 connected to line 56.  In a second embodiment (not shown) the cable systems are arranged so that the boom 9 is raised by the counterweight and is lowered by downward movement of the travelling block.
Patent GB-518081-A (GB)
Title: Improvements in or relating to honing devices
IPC: B24B33/10
Filed: 1938-08-13
Abstract: 518,081. Honing cylinders. MICROMATIC HONE CORPORATION. Aug. 13, 1938, No. 23931. Convention date, Aug. 13, 1937. [Class 60] Honing - devices for cylinder bores comprise reciprocable supports detachably carrying one or more honing-tools that can be expanded and contracted at any position in the stroke by means carried by the support. In one form the machine has a reciprocating head 12 supporting the hone which rotates relatively thereto. A housing 13 below the head is restrained from rotation and has passages 14, 15 for the supply of fluid to ports 27, 28 for operating a piston 23. The end of the piston rod 24 controls a rod 18 that operates the expanding mechanism for the hones and is maintained in contact with the rod 24 by a spring 25. The degree of expansion is limited by a flange 50 on a nut adjustable on the tool body and engaged by a stop 30. In a modification the tool is constructed as a separate attachment independent of the machine. In the form shown in Fig. 3, fluid supply passes through a non-rotating collar 35 to the piston 23 which actuates through a pin 39 a sleeve 41 having a nut 42 with an end 43 that provides a limiting stop. The lower end of the sleeve carries a nut 45 engaging a sliding collar 46 keyed to the end of the sleeve. A spring ball 47 retains the nut in adjusted position, The collar 46 acts through a washer 48 on a spring returned sleeve 49 connected to the expanding rod 52 by a pin 51. Drive is transmitted by a link 55 with pins 57 and 58 providing a flexible joint. In a modification of the construction shown in Fig. 3, the hydraulic actuating means is carried by the machine. The form shown in Fig. 5 has a piston 73 on a central shaft suspended from a driving element 72. A pin and slot 77, 70 forms a bayonet joint for the tool 76. A detent 91 locks the joint in the assembled position. Fluid is supplied at 36 to a collar 83 restrained from rotation at 84. A recessed nut 87 co-operates with a pin 89 to limit the expansion and the nut is serrated on its external surface to co-operate with spring means 94 for maintaining the nut in adjusted position. In a further modification the expansion is by fingers 99, Figs. 6 and 7, carried by a sleeve 111 and acting on a sleeve 112. The fingers are controlled by levers 106 pivoted at 107 and operated by a cone 108, as limited by a stop 114 from a piston 104 in a cylinder carried by a bracket from the machine 101. In other forms the piston acts on the sleeve through rack and pinion gearing or through levers. A number of tools may be reciprocated by a common rod and rotated by gearing from a single splined shaft.