baber/WOPTO huggingface dataset:
Patent GB-545686-A (GB)
Title: Improvements in or relating to methods of and apparatus for freezing food products
IPC: A23L3/36
Filed: 1940-06-20
Abstract: 545,686. Freezing vegetables, fruit, &c. STEVENS, A. H. (Mechanical Research, Inc.). June 20, 1940, No. 10642. [Class 29] Food substances in solid or semi-solid form, such as shelled green peas, shelled oysters, fruits, broken eggs, &c. are fed to a series of spaced horizontal internally cooled plates 20, 21 on which their moisture is immediately frozen, and the produt is removed by scrapers 67 and moved in a wavelikc manner across the surface of the plates to ensure freezing throughout each particle and mixture therewith of the detached ice. The hollow plates are annular and surround a central rotary shaft 50 which may be hollow to receive a charge of solidified carbon dioxide. The plates have internal baffles to provide a circuitous path for a refrigerant supplied from a machine in the base compartment of a heat insulated casing 12, the feed and discharge pipes extending through vertical ducts 30 formed in the insulation. Cold air or gas is circulated by a fan 38, Fig. 5, upwards through the ducts and issues through holes 32 to pass between the plates and is withdrawn centrally at the bottom. A drip channel 55 and waste pipe 57 are fitted at the lower end of the shaft. The three uppermost plates 21 are more widely spaced than those below, and have fixed inner and outer annular baffles or rims 42. The scrapers 67 for these plates are carried by rod 66 having adjustable turn buckles depending from rotary arms 65, while the scrapers 78 for the lower set of plates are set at an angle to the radius and are carried by rods 71 from rotary arms 65 set into notches in rims 70, 71 so as to rotate these rims on the plates. The plates have staggered openings with smoothed edges in the direction of flow of the frozen material. A spreader 105, Fig. 20 may be set forwardly to pile up material in front of it on a plate, or rearwardly as shown in dotted lines to press and compact an even layer. The finished product is removed from the bottom of the casing by worm conveyers 92, 99.
Patent GB-542226-A (GB)
Title: Coupling circuits for electronic discharge devices
IPC: H03H7/38
Filed: 1940-07-30
Abstract: 542,226. Valve modulating circuits. STANDARD TELEPHONES & CABLES, Ltd. (Material Telephonique, Soc. Anon.). July 30, 1940, No. 10707. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 30, 1941.] [Class 40 (v)] A modulator stage is coupled to an energizing stage through a network comprising a tuned transformer and one or more additional elements which inverts the variations of impedance of the modulator stage as seen from the energizing stage so that the parasitic variations of potential of the energizing stage produced by modulation aid instead of opposing the modulation. The arrangement may compensate for non-linearity in the valves by choosing a weak energizing source and a suitable transformation ratio in the network. The network may include a quarter wave transmission line, Fig. 2 (not shown), or may include a quadripole network ABCD terminated in the tuned secondary winding 4 and the tuned circuit 7. Modulation potentials are fed across resistance 9.
Patent GB-995200-A (GB)
Title: Improvements relating to photographic image forming processes
IPC: C08F2/46
Filed: 1962-03-20
Abstract: A photographic image transfer-polymerization process (see Division G2) comprises treating a silver salt image record in image transfer relationship with a layer comprising a non-gaseous, addition-polymerizable, ethylenically unsaturated compound with a fixing agent and a peroxygen compound.  The fixing agent dissolves the silver salt forming a soluble complex which initiates the peroxygen catalysed polymerization. An extensive list of suitable monomers is given including acrylic and methacrylic acids, amides, metal salts and esters of monohydric and polyhydric alcohols and ether alcohols; vinyl esters of mono- and di-carboxylic and sulphonic acids; vinyl ketones; 2-methyl-5-vinyl pyridine; styrene; and sorbaldehyde.  In specific examples, polyethylene glycol diacrylate is used as monomer and potassium persulphate or hydrogen peroxide as peroxygen compound. A list of Specifications describing suitable polymerizable strata is also given.  Specifications 995,199 and 995,201 are referred to.
Patent GB-527510-A (GB)
Title: Improvements in or relating to machines for operating upon hides, skins or the like
IPC: C14B1/04
Filed: 1939-04-06
Abstract: 527,510. Leather-working machines. TANNING PROCESS CO. April 6, 1939, No. 10713. Convention date, April 7, 1938. [Class 76] A staking machine comprises a plurality of blades operating on a skin and a uniformly yielding resilient worksupporting brush into which the skin is pressed by the blades so that it is bent sharply back over them. In the illustrated embodiment the work support is a freely rotating brush roll 10, and the blades 12 are mounted on a powerdriven cylinder 14, being disposed in double helical form as shown in Fig. 3 so that they exert a stretching action on the skin. Between the blades and parallel to them are ribs of felt 16 presenting a broad surface at a level lower than the edges of the blades; these also exert a stretching and smoothing action. The bearings of the roller 10 are carried by parallel arms 18 pivoted on a shaft 20, and power-driven means (not shown) are provided for swinging it from the receiving position (shown in dotted lines) to the operative position and vice versa. The skin 11 is placed over the roller in the former position, the roller is then moved to the operative position, and the operator withdraws the skin against the action of the blades by pulling on the part 24. A power-driven roller 22 assists this withdrawal. A conduit 90 connected with a suction plant is provided for removing dust. Specifications 1061/97 and 253,824, [both in Class 76], are referred to.
Patent GB-183206-A (GB)
Title: Improvements in plaster lathings
IPC: E04F13/04
Filed: 1921-04-13
Abstract: 183,206. Heyd, W. April 13, 1921. Lathing.-A plaster lathing comprises rectangular wooden laths a set edgeways to, and cn one side of, a wire b, which lies in a single undeflected line coincident with the line of tension on the wire. The laths are secured to the wire b by wires c or like fastenings, which are not subject to any part of the tension applied to the wires b.
Patent GB-694297-A (GB)
Title: Improvements in or relating to window or wall ventilators
Inventor: BRASKAMP WILLEM HENDRIK
IPC: E06B7/02
Filed: 1952-04-29
Abstract: 694,297. Ventilators. NAAMLOOZE VENNOOTSCHAP INDUSTRIELE ONDERNEMING W. H. BRASKAMP. April 29. 1952, No. 10771/52. Class 137. A window or wall ventilator comprises a shutter 2 which is displaced to obturate an air passage by means effected by an operating force having the same direction for both directions of movement of the shutter. A bell crank lever 5, 5<SP>1</SP>, on a fixed axis 6 is acted upon by a torsion spring 7 to move the shutter between guides 3 into open position by engagement of a pin 4 with the forked end of the lever. In the closed position the. lever is held against the action of the spring by a spring pawl 8 attached to the ventilator casing and resiliently engaging a recess 9 in the other end of the lever. This arm 5<SP>1</SP> of the lever is straddled by a U-shaped pawl lifting element 11 pivoted on an axis 12 and normally urged in clockwise, direction by a spring 13 within the limit of an abutment 14 on the lever. A chain 16 is attached to the element at a point 15 such that in the position in which the element engages the pawl the chain is situated beyond the axis; a pull on the chain rocks the element to release the lever which on release of the chain moves to open the shutter. The element 11 is now held against the casing and the chain hangs to the left of axis 12. A pull now causes the element to rock the lever to close the shutter the pawl being temporarily forced back by the rounded nose 10 of the lever arm.
Patent GB-108073-A (GB)
IPC: B62B3/06
Abstract: 108,073. Vickery, F. W. Oct. 5, 1916. Hand-trucks. - A truck of the type provided with a loadcarrying frame or platform adapted to be raised by vertical movement of t h e steering - handle is shown in central section in Fig. 1 and in Fig. 2 with one side member of the load frame 1 removed. The frame 1 is carried upon the wheel axles 16, 29 by a pair of rear cranked arms 5, pivoted to the frame at 27, and bv a front transverse frame 4 pivoted to the frame 1 at 3 and mounted upon the wheel-carrying member 7, which is capable of steering movement about the pivot 9. To constrain equal lifting movement of the frame 1 at front and rear, the frame 4 and arms 5 are further connected by links 31. The frame 4 and member 7 can be turned about the axle 16 to raise or lower the load frame 1 by the handle 10, which is however connected to the member 7 by pins 11, 12, one of which 11 can be disengaged from its slot 15 so that movement of the handle is ineffective to move the load frame. The load frame 1 is automatically locked in the raised position by a pair of detents 17, 18 pivoted on the frame at 23 and adapted to engage projections 19 on each end of the frame 4. A pawl 21 slides in guides 20 pivoted on the detent 18, and is engaged by the frame 4 as the latter approaches the raised position, thereby tensioning a spring 22 extending between the pawl 21 and the detent and urging the latter into position for engagement by the projection 19. To unlock the load frame for lowering, it is necessary, after first disengaging the pawl 21 from the frame 4, to give the frame 4 a slight raising movement to free a projection 26, formed on the detent, from the projection 19, when the spring 24 is able to swing the detent clear of the projection 19.
Patent GB-513448-A (GB)
Title: Improvements in and relating to wheel-barrows
IPC: B62B1/18
Filed: 1938-04-11
Abstract: 513,448. Hand trucks. WRIGHT, A. A. K. April 11, 1938, No. 10979. [Class 108 (i)] In a wheelbarrow comprising a pair of side shafts 3 interconnected by cross-spars and each carrying at one end a journal for a two-wheel axle 8 and formed at the other end with a handle 2, a pivoted telescopic arm is provided, adjacent the handles, having at its outer end a claw 4, hook, or the like adapted to, engage the load to assist in transferring the load to the barrow, the arm being adjustable longitudinally relative to the shafts. As shown the arm 1 is telescopic, the tubular part being pivoted to a collar 10 slidable on a bar 11 carried by transverse rods 12 and having a detent 13 adapted to co-operate with a tooth or teeth 14 on the bar, the collar being rockable by a handle 15 to disengage the detent from the bar. The telescopic parts of the arm 1 may be relatively fixed by a pin 6 engaging registering holes in the parts. The side shafts 3 may be formed with curved surfaces 7 projecting beyond the wheels so that when the barrow is up-ended for loading the wheels are raised off the ground. According to the Provisional Specification the arm 1 is pivoted on a transverse bar carried by and adjustable between the shafts 3, while the arm may be supported above the load by means of a catch constituted by a second arm adapted to engage the bar and carried by a sleeve loosely mounted on the transverse bar, the sleeve being held in position by a notch &c. formed thereon engaging a lug on the transverse bar.
Patent GB-286499-A (GB)
Title: Improvements in or relating to fruit vending machine
IPC: G07F11/56
Filed: 1927-04-25
Abstract: 286,499. Redlinger, M. April 25, 1927. Delivery of articles stored on helical shelf. -In a coin-freed venaing machine, particularly adapted for selling fruits, and of the kind in which a rotatable metal frame descends a screw and supports the articles to be, vended on a helical shelf, the fruits, such as apples, oranges, &c., are held in bottomless pockets 5, Figs. 2 and' 12, helically arranged on a cylinder 4, which engages a spiral 3 of coarse pitch on a shaft 2 so that the cylinder, when free, will descend the shaft under its own weight. When a coin is inserted and a rod 6, pushed in, a shaft 19 carrying two escapement arms 22, 25 is rocked to allow the cylinder to turn through the space of one pocket. The arms coact with the dividing walls 21 of the pockets and. the arm 25 has a hand or projection 24 which passes up through the pocket and pushes out the. fruit. The fruit drops on a slope 27B provided with a cushion 27A to prevent noise and is delivered to a pocket. 27 which is pivoted to and normally retained by a weight 27c in a position closing an opening in the wall of the casing 1. The pocket is tilted outwardly by the weight of the fruit, which can be taken out by the purchaser. Coin action, mechanical-connection.-The coin is inserted into slots 7, Fig.. 9, in the slide 6 and rests on guides 8. When the slide is pushed in, the coin engages the arm 15 of a lever 12 pivoted at 13 and raises this lever, thereby raising a rod 16 pivoted to it at 17. The rod 16 is connected to an arm 18 on the rock shaft 19. When the slide 6 is pushed in completely, the coin drops through slots 9 in the guides 8. A complete stroke of the slide 6 is ensured by the coin engaging the toothed underside of a pivoted arm 11.
Patent GB-1326864-A (GB)
Title: Open-end spinning machine
IPC: D01H4/32
Filed: 1972-03-09
Abstract: 1326864 Fibre feed in open-end spinning machines FRIED KRUPP GmbH 9 March 1972 [10 March 1971] 11111/72 Headings DID and D1N In an open-end spinning machine of a type having a conical opening roller 7 mounted coaxially with and extending into the spinning rotor 2 the edge of the roller 7 from which the opened fibres emerge is provided with a thrower wheel 12 of arcuate radial crosssection to deflect the fibres towards the collecting surface 1 of the rotor 2. This thrower wheel 12 may be detachable or integral with the roller 7.
Patent GB-326057-A (GB)
Title: Improvements relating to paper bags
IPC: B65D30/24
Filed: 1929-04-11
Abstract: 326,057. Weisshuhn, E. April 11, 1929. Paper bags; securing bags, special means for.- In closing paper bags comprising one or more tubes, a cross bottom is formed at one or both ends by folding the end of one of the flaps 8, 10, produced by opening out the end of the bag tube, inwardly beneath the connecting portion 14 when the flap is folded over the centre line of the bottom, the connecting portion being thus creased along lines at an angle to the centre line; the other flap is then folded in the usual manner and a gummed label applied to secure the flaps. One corner may be folded in the usual manner to provide a filling aperture. In a modification, the ends of the bag lengths are out parallel to one another and at an angle other than a rightangle as shown at 13, Fig. 5, to economize paper. The closed flaps may be secured by staples'.
Patent GB-664774-A (GB)
Title: An improved air heating system for motor vehicles
IPC: B60H1/00
Filed: 1949-04-27
Abstract: 664,774. Butterfly valves. FORD MOTOR CO., Ltd. April 27, 1949 [May 5, 1948], No. 11227/49. Class 135 [Also in Groups X and XIII] An air heating system for vehicles (see Group XIII) includes a butterfly valve 22 located in a conduit leading air from the front to the interior of the vehicle at the junction with a pipe 19 leading to an air heater. The valve is pivoted on a rod 31 actuated by a Bowden wire operating upon a crank and comprises two complementary sheet metal ellipses enclosing an elliptical rubber gasket 34 which is larger than the diameter of the air conduit to effect a tight seal when in either of the closed positions and this it is stated imparts an over-centre action to the valve so that it will automatically seat in either closed position and remain so without the application of any external pressure.
Patent GB-805522-A (GB)
Title: Improvements in and relating to the heat treatment of filaments
IPC: D02J1/22
Filed: 1955-04-19
Abstract: Filaments, especially thermoplastic filaments, are heat-treated by traversing them through a bath consisting of a mass of hot metal balls or granules.  The filaments may be stretched by admitting them to the bath at a predetermined linear rate, traversing them along a rectilinear submerged path through the bath, and continuously withdrawing them at a predetermined linear rate greater than the supply rate.  The balls or granules may be of steel, preferably stainless steel, and the effective density of the bath may be controlled magnetically, e.g. by one or more permanent magnets or electromagnets disposed below the bath to attract the balls or granules downwards.  The bath may be heated by an electric resistance heating device, and the temperature may be controlled thermostatically.  The invention may be applied to the hot stretching of thermoplastic synthetic polyamide filaments, e.g. nylon, and other synthetic thermoplastic filaments, e.g. "Terylene" (Registered Trade Mark), and to the polyresination by heat of urea-formaldehyde or phenol-urea condensate resins on or in cotton or woollen yarns.ALSO:Wire is heat - treated by traversing it through a bath consisting of a mass of hot metal balls or granules.  The bath may be heated by an electric resistance heating device, and the temperature may be controlled thermostatically.  The balls or granules may be of steel, preferably stainless steel, and the effective density of the bath may be controlled magnetically, e.g. by one or more permanent magnets or electromagnets disposed below the bath to attract the balls or granules downwards.
Patent GB-884534-A (GB)
Title: Capacitor charging and discharging circuit
IPC: B23H1/02
Filed: 1959-04-03
Abstract: 884,534. Removing metal by spark erosion. FIRTH STERLING Inc. April 3, 1959 [April 7, 1958], No. 11363/59. Class 83 (4). [Also in Group XL (c)] A pulse generator for spark erosion apparatus comprises a capacitor charged from a direct current supply via a saturable inductor having a rectangular hysteresis loop and discharged via a periodically closed ionizable switching device. As shown in Fig. 1, capacitor 11 is charged from a direct current supply 10 via a saturable inductor 21 and discharged via a thyratron or mercury pool ignitron 12 and the gap between the tungsten carbide workpiece W and the earthed electrode T, each time a trigger pulse is fed to the igniter 12a. The natural period of the capacitor 11 and the saturated value of the inductor 21 is made less than the required period between pulses and the charging circuit is less than critically damped. The saturable inductor 21 is provided with a biasing current in winding 25 from a D.C. supply 27 to oppose the flux produced by the charging current. At the end of each pulse (time B) the capacitor 11 begins to recharge slowly, due to the high unsaturated inductance of inductor 21, thus giving time for the gas tube 12 to deionize. At time C, the inductor 21 becomes saturated, and the capacitor 11 charges rapidly. At time E the effect of the charging current on the core 26 is nullified by the bias current, and the core is no longer saturated so that the rate of rise of charge is reduced. The capacitor 11 is now charged to a higher voltage than the supply 10 but discharge is prevented by a gaseous, silicon, germanium or selenium rectifier 30. In a similar arrangement, the capacitor 18 is charged from the supply 17 via a saturable inductor 34 and a thyratron 41 connected as a rectifier. The latter may be omitted. When a trigger pulse is fed to terminal 20, the gas tube 19 first discharges capacitor 18 and hence fires the gas tube 12 which discharges capacitor 11 via the spark gap W, T. A further saturable reactor 32 is present in the discharge path to prevent " arc-back" in the tube 12. The saturable inductor 32 should have a very low saturation inductance. Feed arrangements may be provided for electrode T to maintain the gap length. The gap may be flooded with kerosene. Specification 737,397 is referred to.
Patent GB-690623-A (GB)
Title: Improvements relating to transfers
Inventor: EDGE NORMAN
IPC: B44C1/175
Filed: 1950-05-08
Abstract: 690,623. Transfers; transferring designs. BRITTAINS, Ltd. April 26, 1951 [May 8, 1950], No..11419/50. Class 100(ii) An improved transfer paper for use in printing with ceramic colours and fluxes for the decoration of heat-resisting bases, such as pottery, glass or vitreous enamels, comprises a decalcomania paper, such as a Duplex or Simplex paper, the gummed side of which is united by a water-soluble adhesive bond to a coating of a thermoplastic material which will accept a decoration printed with ceramic colours and fluxes and which becomes soft and adhesive at a tremperature of 50-100‹C and is volatilized or decomposed without residue below the maturing temperature of the decoration. The transfer paper is produced by coating the gummed side of Duplex or Simplex decalcomania paper with a solution of the thermoplastic material in an organic solvent such as toluene, acetone, methyl ethyl ketone, ethyl or butyl acetate. The coating should be at least as thick as the design printed on it, and should become adhesive at 50-100‹C. The thermoplastic material is preferably a polymeric synthetic resin such as polymethyl methaerylate, n-polybutyl methacrylate and polystyrene and their co-polymers, which depolymerize to the volatile monomer at temperatures below the maturing temperature of the decoration, and is compounded with volatile plasticizers, such as the chlorinated diphenyls and polyphenols known as Aroclors (the word " Aroclor " being a Registered Trade Mark), which evaporate at the same temperatures with little or no carbonization leaving no stain, or the phthalates, for example dibutyl phthalate. Alternatively, the material may be ethyl cellulose or nitrocellulose plasticized with "Aroclors " methyl abietate or phthalates and modified by the addition of suitable resins such as hydrogenated rosin, polyvinyl acetate, or, in the case of nitrocellulose, ester gum. Examples for use when dissolved in toluene for applying to Duplex paper are (a) 10 gms. polymethyl methacrylate, 15 gms. " Aroclor " 1254; (b) n-polybutyl methacrylate without a plasticizer; (c) 40 gms. polymethyl methacrylate, 20 c.c. dibutyl phthalate; (d) 20 gms. ethyl cellulose, 15 c.c. " Aroclor " 1254. Transferring designs.-The desired decoration is printed with ceramic colours and fluxes on to the thermoplastic coating previously applied to the paper, and the printed decoration cut out from the sheet leaving a suitable margin around the decoration. The decoration is applied to the surface to be decorated and heat-sealed to it, the paper is removed by the application of water, and the surface is heated to the maturing temperature of the colours and fluxes. The thermoplastic coating decomposes or volatilizes without residue during firing. If Duplex paper is used, the backing can be stripped from the tissue paper before applying the design, and the tissue paper and design applied to a surface pre-heated to a temperature at which the coating will adhere, or applied to a cold surface and moderate heat and pressure applied.