baber/WOPTO huggingface dataset:
Patent GB-1115870-A (GB)
Title: A method for the production of plates, webs, sheets or films of foamed plastics material
IPC: B29C44/00
Filed: 1966-03-23
Abstract: In the production of sheets or films of foamed plastics material by extrusion, plastics material is extruded through a slot die, is allowed to expand without confinement and thereafter the opposite surfaces of the extrudate are successively subjected to longitudinal "hotstretching" of not more than 20%, with consequent flattening, by passage over a smooth surface.  The stretching may be effected by two or more cylindrical or barrel-shaped rollers with, in the simplest case, the extrudate being led in an S-shaped path over two rollers. Preferably the temperatures of the rolls are controllable to ensure that at the last contact between a roll and the extrudate the non-contacting surface thereof is above the softening point of the plastics material.  External heaters may be provided, e.g. infra-red lamps, to assist this (see also Specification 1,091,624). However, in some cases the extrudate may be force-cooled using cold air blowers. After stretching, the extrudate may be heated to reduce the elongation of cells caused by the stretching.  Plastics materials exemplified are polystyrene and polypropylene, with pentane being used as a blowing agent, and mixtures of sodium bicarbonate and citric acid or azodicarbonamide respectively as modifiers.
Patent GB-1047664-A (GB)
Title: Sheet folding apparatus
Inventor: STOOTHOFF STANLEY TIFFANY
IPC: B65H45/14
Filed: 1965-03-25
Abstract: 1,047,664. Sheet folding machines. MIEHLE-GOSS-DEXTER; Inc. March 25, 1965, No. 12793/65. Heading B6H. A buckling folder machine comprises two folding plates 20, 21, each including an upper and lower plate 22, 23 respectively, and each folding plate is provided with a sheet guiding blade 30, 31, pivotally mounted on the lower plate 23 and means to move the blade between a first position in which the blade forms an extension of the lever plate to guide a sheet into the space between the plates 22, 23 and a second position in which the blade obturates the entrance to the space and deflects the sheets therefrom (Fig. 1, not shown). In operation, a sheet to be folded is fed along a bridge 44 into the bite of feed rollers 14, 15, which with the blade 30 in the position shown advance the sheet into the first fold plate 20 against a pivotally mounted and electromagnetically operated stop 24, whereby the sheet is folded between rollers 13, 14 and the folded edge fed into the second fold plate 21 and folded between rollers 12, 13. If the fold plate 20 is not to be used, the blade 30 is moved by a lever 43, which may be operated electromagnetically , in a downward direction to obturate the entrance to the plate 20.
Patent GB-663861-A (GB)
Title: Improvements in or relating to typewriting or like machines
IPC: B41J19/32
Filed: 1948-05-10
Abstract: 663,861. Typewriters. ROYAL TYPEWRITER CO., Inc. May 10, 1948, No. 12828/48. Class 100 (iv). Letter-spacing mechanism.-In differential spacing-mechanism comprising a normal stop and a key-operated auxiliary stop for permitting double and single movements of the escapement respectively according both to which key is operated and to the upper or lower case position of a case shift element, the auxiliary stop is operated by a control bar which is shiftable to two positions corresponding to those of the case-shift element and is actuated or not by links connected to the keys and each having a part or parts engageable with the control bar in one or the other only or both of its positions or having no such parts. The mechanism shown comprises, as described in Specification 298,973, [Class 100 (iv)], an escapement wheel 28, Fig. 1, co-operating with fast and loose dogs 24, 25 on a rocker, the movement of the loose dog being limited for double spacing by a stop on the rocker, and for single spacing by an auxiliary stop 57 mounted on a lever 49 pivoted to the main frame at 50, a yielding joint being provided at 63 by a spring 55 and stop ear 56; the lever 49 is actuated, against its spring 51, by a universal bar 61 pivoted at 59 on arms 58 integral with (Fig. 1) or screwed to (Fig. 10) links 16 which connect the drop-segment C to the spring-loaded arms 43 mounted on the rock shaft 42 of the case shift mechanism, and on depression of the type keys it is actuated or not according to the setting of the case shift and to the configuration of the rear hooked ends 15a-15d of links 14a-14d, Fig. 10, forming that part of the standard action which transmits movement to the escapement universal bar 16 connected to the dog rocker: the end 15a engages the bar 61 when the latter is raised (lower case) but misses it when it is lowered (upper case); the end 15b engages the -bar 61 in both positions; the end 15c has a U- shaped part 63 which fits round but does not actuate the bar 61 when the latter is raised, and an extension 62c which engages the bar 61 when it is lowered; the end 15d does not engage the bar 61 in either position. Specification 302,569, [Class 100 (iv)], is referred to.
Patent GB-708347-A (GB)
Title: Improvements in or relating to machines for counting and sizing spray droplets, stains, craters and the like
Inventor: HOARE ERIC RONALD
IPC: G06M11/04
Filed: 1951-05-31
Abstract: 708,347. Photo-electric particle counter. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 21, 1952 [May 31, 1951], No. 12851/51. Class 40 (3) Small particles or stains on a two dimensional record are counted and sized by means of a scanning beam producing a succession of signals of duration corresponding to the lengths of chords of the particle, a number of counters being arranged to count the number of signals the scanning period of which is above predetermined time duration. Thus by subtraction the number of chords in each group may be determined and the Specification shows how, from this, the number of particles in each size group may be inferred. As shown, the specimen is scanned by a slow speed scanner A which may be a picture telegraph transmitter of the type in which the record to be analysed is fastened on to a rotary drum, a mirror drum or prism being used to cause the scanning spot to move with constant velocity along the axis of rotation of the drum. When the specimen must be scanned as a plane surface two mirror drums or prisms rotating on axes at right angles may be used. The ouput of the scanner which consists of a high frequency carrier modulated by the scanner signal is demodulated at B and the resultant pulses applied to a squaring circuit C and are passed through a protective gate D to be described later to a linear voltage sweep generator E. This circuit is initiated by the start of pulses to produce a voltage which increases linearly with time until the end of the pulse resets the circuit. The output of the circuit is applied to a number of voltage level discriminators F ... O of the type in which a biased diode forms part of the feed-back circuit of a blocking oscillator. When the output of the circuit E reaches the bias level of any of the diodes the blocking oscillator generates a pulse but by the time the oscillator has recovered the output of the circuit E is such as to prevent a repetition of the action. These pulses are counted on one of counters P-Y which may be the cold cathode type in which the pulses are stored as the position of a glow within the tube. Gate circuit D is inserted between squaring circuit C and linear voltage generator E and is made non- conducting by a pulse from discriminator O which accepts the largest pulse. Thus pulses too large for the counters are automatically shortened and included in the largest group. A rate voltage proportional to the speed of the scanning motor may control the slope of the output waveform of voltage generator E to correct for speed variations. Contacts on the drum shaft may black out the circuit when spring clips holding down the specimen are traversed by the scanning beam. Variations in the " white level " of the pulses are compensated by applying a bias derived from a circuit of long time constant compared with the pulse duration to the squaring stage.
Patent GB-1001966-A (GB)
Title: Improvements in or relating to detergent compositions in bar form
Inventor: WARD NORMAN ERNEST
IPC: C11D10/04
Filed: 1960-08-31
Abstract: A detergent composition in bar form comprises a mixture of preformed soluble soap and at least one preformed alkaline earth metal, magnesium, zinc or aluminium salt of an ether linked sulphonic acid derivative of the general formula RO.(CH2)n.SO3H, in which R is a C10-18 alkyl group, n is 1-3, and the group (CH2)n may carry not more than one unetherified hydroxyl group.  The mixing of the soap and the salt is carried out under conditions such that exchange of cations does not take place, i.e. with insufficient water to make the mixture fluid, as if more water than this is present the mixing is achieved quickly and the product dried immediately.  The soap may be a conventional alkali metal soap, e.g. one derived from a mixture of tallow with coconut or palm kernel oil, which suitable salts are calcium and zinc alkyl (from coconut) glyceryl ether sulphonates. A small proportion of free saturated C10-18 fatty acid (e.g. lauric acid) may be present, as also may be perfume, colour, opacifiers, superfatting agents, and germicides.
Patent GB-255582-A (GB)
Title: Vibratory diaphragms for acoustical instruments
IPC: H04R7/12
Filed: 1925-05-18
Abstract: 255,582. British Thomson-Houston Co., Ltd., Butcher, J. H., and Crossling, E. G. May 18, 1925. Diaphragms.-A conical diaphragm for acoustic instruments, such as telephone receivers, transmitters or loud speakers, of the type wherein the diaphragm vibrates as a whole, is formed of two or more layers of fabric impregnated with synthetic resin or like material, such as natural resin or a compound of a resin with a powdered material. The conical diaphragm shown in Figs. 1 and 3, is formed by cutting equal sectors from three discs and moulding the discs to shape under heat and pressure in a conical mould. The butting edges 11 of the sectors are arranged symmetrically. Instead of cutting out sectors, each disc may be slit radially and the material adjoining the slits overlapped : or the material of the sectors may be overlapped without the provision of a slit. The edge of the diaphragm may be turned back as shown in Fig. 1, or thickened. The Provisional Specification states that the diaphragm may be formed of one layer of impregnated fabric. Reference has been directed by the Comptroller to Specifications 7109/86, and 175,138.
Patent GB-151671-A (GB)
Title: Improvements in apparatus for burning liquid fuel in steam generators and the like, specially applicable to steam generators for motor waggons and other steam propelled vehicles
IPC: F23D99/00
Filed: 1919-05-23
Abstract: 151,671. Kermode, J. J. May 23, 1919. Liquid-fuel furnaces.-In a vertical steamgenerator suitable for steam lorries &c. the usual ash-pan is replaced by a depending brick-lined casing a forming with the combustion space of the boiler an enlarged combustion chamber suitable for oil burning. Over an opening a<3> in the casing a is secured an air control casing a<4> into which the burner B projects, and which is fitted with an air control valve a' so pivoted as to close when the pressure within the furnace is excessive. The oil supply is heated by steam &c. and/or by passing through a loop arranged in the flame. The draught is obtained by a steam ring in the chimney in addition to the usual exhaust nozzle.
Patent GB-197936-A (GB)
Title: Improvements relating to apparatus for dyeing hanks
IPC: D06B3/08
Filed: 1923-05-15
Abstract: 197,936. Rosina, I. May 22, 1922, [Convention date]. Hank-type. - A hank &c. dyeing- machine comprises a frame 2, 2<1>, Figs. 1 and 2, removably mounted on the vat 1 and provided along opposite sides with pairs of coaxial shafts 8 to the inner ends of which are secured cranks 16 in the extremities of which the sticks 18 carrying the hanks are mounted; the sticks, which are provided with longitudinal edges or ribs, are either secured in fixed sockets 12, Fig. 4, provided in the cranks, for which purpose a clip 17<1> is provided, or the socket itself may be rotatably mounted on the crank as shown in Fig. 5, in which case a spur wheel 20 carried by the socket 17 engages a stationary spur wheel 21 so that the movement of the crank produces a rotation of the stick, which rotation may, by omitting teeth on portions of the wheel 21, be rendered intermittent. The shafts 8 are driven by worm gearing from a pair of shafts 9 which are in turn driven from a common shaft 13, Figs. 1 and 2, and the frame carrying the mechanism is removably connected to the vat by loops 3, Fig. 3, and screws 4, the latter engaging lugs 6 carried by the frame.
Patent GB-542553-A (GB)
Title: Improvements in and relating to means for saving life
IPC: B63C9/20
Filed: 1940-04-03
Abstract: 542,553. Electric battery lamps. with switches. GENERAL ELECTRIC CO., Ltd., ELLIS, G., SAUNDERS, C. W. April 3, 1940, No. 13004/41. Divided out of 539,751. [Class 39 (ii)] [Also in Group XXXVII] A self-contained battery lamp for use on board ship consists of a water-tight casing holding the battery 25 and having attached to its end a lamp 13 enclosed in a glass cover 10. The device is normally suspended upsidedown by means of the loop 3 and the switching means is unaffected by the roll of the ship. In use, it is inverted whereupon the contact 37 slides and rotates down the threaded metal wire 23 into engagement with the contacts 35 to complete the circuit with a time-delay action. Specifications 1493/05, [Class 38], 538,088, and 539,751 are referred to.
Patent GB-688005-A (GB)
Title: Improvements in and connected with machines for die-casting metal
IPC: B22D17/04
Filed: 1951-06-01
Abstract: 688,005. Casting-machines; moulds; cores. GENERAL MOTORS CORPORATION. June 1, 1951 [June 12, 1950], No. 13016/51. Class 83 (i). The die part 50, Fig. 2, of a casting-machine through which molten metal is forced into the die cavity 62 is thermally insulated from the nozzle by an insulating washer held in a recess of the part 50 by a nozzle-engaging plate 92. The washer 88 may be of mica and be located in an annular recess 86 in a block 54 which may comprise one part or, as shown, two parts 80, 82 and may also have a water or other fluid cooling passage 90. The plate 92 has a nozzle-engaging recess 102, the whole being welded at 84, 94 to form a unit which is held in the recess 52 of the part 50 by a washer and screw 104. In a modification, the parts 80, 82 are omitted, the insulating washer 188, Fig. 3, being located in a shallow recess 152 of the part 150 to which the plate 194 is bolted. The edge of this plate 194 may have a bevelled edge 198 to make line contact with the part 150 and thus reduce conduction of heat, and for the same reason the plate may have recesses 202. The mould may have a water-cooled core 64, which extends into the sprue 68 for rapid cooling, and ejectors 72. The casting-machine shown has a hardened liner 20, Fig. 1, shrink-fitted in the cylinder bore, a shield 34 over the molten-metal intake 24 and a nozzle 40 which is jointed to a hardened steel spacer 44 fitted into the metal-supplying neck 36 and is heated by a burner 56.
Patent GB-1173966-A (GB)
Title: Improvements in Packing Machinery
Inventor: UDALL DONALD FREDERICK
IPC: B65B51/14
Filed: 1967-03-20
Abstract: 1,173,966. Packaging-machines. BRITISHAMERICAN TOBACCO CO. Ltd. 6 March, 1968 [20 March, 1967], No. 13018/67. Heading B8C. A machine comprises means for applying quick drying adhesive to opposed side closure flaps of a package and a reciprocating device, to fold the flaps inwards, acting perpendicularly to the package route. A filled hinged-lid carton formed by folding a blank around a block, e.g. of cigarettes, the folding of which is complete apart from securing the side flaps 4, Fig. 4, passes between adhesive applying rollers 2 to allow the undersides of the flaps 4 to receive adhesive, e.g. of the hot-melt type. The carton is then pulled by reciprocating grippers (not shown) between guides 6 and members 9 to align it. These then move with it under a height-adjustable plate 10. Cams 20, 23 continuously rotate on a shaft 22. Cam 23 causes a plate 27 to pivot against the bias of a spring 28 and abut the carton against preceding cartons whilst cam 20, via its follower 19, allows springs 21 to expand pushing the interconnected parts 12-15, 18 downwards. Consequently folders 12 cause the flaps 4 to bend and, upon withdrawal of the grippers 6 along the rails 8, the flaps 4 are forced against inner flaps 11. Brushes 31 retard the cartons as they pass a testing device, e.g. a photo-cell which causes a solenoid 36 to swing a plate 37 downwards and reject a carton in which the flaps have not been sealed. In further embodiments (not shown) the folders 12 may be electro-magnetically, pneumatically, or hydraulically operated. Also an intermittently driven conveyer can be used to move the cartons.
Patent GB-184265-A (GB)
Title: Improvements in or relating to vulcanising apparatus
IPC: B29C35/00
Filed: 1921-05-06
Abstract: 184,265. Frost, W. May 6, 1921. Portable vulcanizers. - A heating-unit is constructed with a heat capacity such that when raised to a temperature not less than vulcanizing- temperature it maintains the article to which it is applied at the desired temperature for the length of time necessary to complete the vulcanization. The unit preferably comprises a container, surrounded by heat-insulating material except on the working face, containing a substance which changes its state and gives out its latent heat at the vulcanizing temperature. Suitable substances are the alloys described in Specification 183,590. Mixtures of substances having different melting-points, or mixtures which give eutectic alloys at appropriate temperatures may also be used. Substances such as wax which are bad conductors of heat in the solid state are particularly suitable. The apparatus may be made sufficiently heavy to produce the requisite pressure when laid upon the article to be treated. Reference has been directed by the Comptroller to Specifications 7477/94 and 183,590.
Patent GB-611547-A (GB)
Title: Improvements in or relating to electric regulators
IPC: H02P9/22
Filed: 1946-04-30
Abstract: 611,547. Automatic regulators. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. April 30, 1946, No. 13029. Convention date, May 1, 1945. [Class 38 (iv)] A voltage regulator of the electromagnetically - operated pile type incorporates a dashpot damping device comprising a disc of magnetisable material, held against movement when the magnet is energized, and a dished diaphragm carried by the armature member. The carbon pile is compressed through a pressure member 90 by a dished star-shaped laminated spring 76  mounted behind the armature 64. The magnet system incorporates a centre pole member 40, carrying the energizing coil, and an annular polepiece 42. A thin disc 66 of magnetisable material is placed over the magnet poles and a dished diaphragm 68 is carried by the armature assembly so that its periphery engages the member 66, against which it is held by a stepped annular member 70 on which the spring 76 presses. The step 72 allows free movement of the diaphragm 68 and the combination of the latter with the disc 66 provides a damping dashpot whose action may be improved by a vent 96, in either the disc 66 or diaphragm 68. The rear face of the member 70 is recessed as shown so that the spring 76 comes into progressively greater contact with it as the armature approaches the magnet poles so, in effect, increasing the rigidity of the spring as the air gap decreases. Excessive movement in the opposite direction, which may result from prolonged use of the carbon discs, is limited by engagement of the diaphragm 68 with the inner edge of the ring member 70 and so prevents the current rising to an unsafe extent.
Patent GB-101486-A (GB)
Title: Improved Regulator for Gas Pumps and Compressors and the like.
IPC: G05D16/12
Filed: 1916-09-15
Abstract: 101,486. Smulders & Co., L. Sept. 15, 1915, [Convention date]. Regulating and controlling compression.-In a regulator for gas pumps, compressors, &c., speed regulation of the motor driving the pump is combined with regulation of the flow of gas, the two regulations being dependent on one another in such a manner that the flow regulation comes in aid of the speed regulation only when the gas output at the time has fallen to a determined adjustable minimum. As shown, a ball a is suspended in a vessel b containing water and is balanced by a weight d and a cord passing over a pulley c. The space below the bell is connected by a pipe f and a neck g to the suction side of the pumps, and the suction side is separated from the delivery side at h in the regulator by a disk j, which is adapted to slide in a cylinder p having upper rectangular apertures and lower triangular apertures. The disk j and bell a are connected by a rod k which acts through levers n, provided with slidably adjustable weights, and rods o, adjustable in length, on the speed regulators m of the electric motors or gas or steam engines driving the pumps. The upper part of the cylinder p has a slot for pipes q to discharge into the cylinder an oil that is a solvent of tar, to prevent the parts from being choked with dirt. When the gas pressure fails in the suction main owing to diminished gas output, the ball falls and acts on the speed regulators to lower the speed of the motors &c. The weight d, the weights on the levers n, and the length of the rods o are adjusted to bring the flow regulation through the triangular apertures in aid of the speed regulation at a determined minimum pressure. When the pressure becomes too great in the suction main, the bell rises, the speed of the motors &c. is increased, and at a determined pressure gas flows through the rectangular apertures in the cylinder p from the suction main to the delivery main, an adjustable part of the weight d being allowed to rest on rods r, so that a high pressure in the suction main is required to raise the bell a sufficiently to open the rectangular apertures. The regulator may, alternatively, be used to maintain a given pressure in the delivery main, the apertures for the return flow being arranged above the disk.
Patent GB-131627-A (GB)
IPC: B64C3/50
Abstract: 131,627. Higginbottom, J. June 3, 1918. Steering and balancing.-The planes of aeroplanes are composed of a fixed front part proportioned so as to be just sufficient to take the main part of the load at high speeds, and a rear part hinged thereto and adjusted by the pilot, preferably by means of a hand-wheel and worm gear. Fig. 2 shows the front fixed part 1 with a rear part 3 hinged at 5 and set in the position for slow speeds. For high speeds, the rear part is raised so that the main load is taken by the front part. The two adjustable parts 3 at opposite sides of the machine may be operated simultaneously or separately. Planes, construction of.-The front part 1 of the plane is preferably cambered, and the rear part 3 flat; or the rear part may be of doubleconvex cross-section.