baber/WOPTO huggingface dataset:
Patent GB-873726-A (GB)
Title: Apparatus for fabricating flat and bottom-folding bags
IPC: B31B150/00
Filed: 1959-09-03
Abstract: 873,726. Bag-making machines. HESSER, MASCHINENFABRIK A.G., FR. Sept. 3, 1959 [Sept. 15, 1958], No. 30108/59. Class 94(2). A blank 1a is cut off a web of material of a length corresponding to the required bag width and is fed by belts 8, 9 to a folding wheel 11 which is rotatable stepwise between two fixed guide cheeks 18 and includes at least one folding segment 12 whereby a bag blank fed to the apparatus is engaged along a medial line by an edge of the folding segment, drawn between the guide cheeks and thereby folded, and the thus-folded blank is withdrawn by conveyer belts 22. Each segment has a clip 15 which holds the blank in position on the segment as the folding wheel 11 rotates, the clips being movably applied against the folding edges of the segments by spring tension and lifted for the introduction and withdrawal of the blanks by the action of a cam disc 17 through arms 16 associated with the segments. The belts 8 are raised, by means not shown, to release the blank and it is then drawn between the guide cheeks 18 which are curved outwards at the entrance to the space between them. After 90 degrees rotation the blank is folded and the movement ceases while the folded blank is heat sealed by sealing jaws 30, a fresh blank being fed in at the same time. The folding wheel 11 then rotates through another 90 degrees and brings the sealed longitudinal seam of the blank between pairs of vertical rollers 20, 21 which open and close under spring pressure, drawing the blank from the folding segment. Belts 22 convey the folded blank to sealing jaws 31 which heat-seal a second seam and form the blank into a bag. In a modification the jaws 30 are arranged parallel to the jaws 31 a bag-width apart. The apparatus may be adapted, Fig. 4, to make bottom-folding bags by the addition of folding plates 23 at both sides of each folding segment 12 which are shifted beyond the folding edges and make a double fold, as shown in Fig. 7. The shifting may be done by a cam 25 through arms 26 rotatably mounted on the hub of the folding wheel 11, and connected to toothed segments 27 in mesh with toothed segments 28 attached to the folding plates 23. Alternatively a parallelogram linkage system could be used. The guide cheeks 18 are movable for adaptation to bag materials of different stiffness and thickness and the complete folding assembly is vertically adjustable, in relation to the belt 22 and rollers 20, 21, to allow for the production of different sizes of bag.
Patent GB-299456-A (GB)
Title: An improved method and means for controlling the potential of double wound electric generators
IPC: H02P9/42
Filed: 1928-10-18
Abstract: 299,456. Eclipse Machine Co., (Assignees of Lansing, R. P.). Oct. 28, 1927, [Convention date]. Supplying consuming devices from variablespeed generators; regulation, automatic. - In generators having double-wound armatures, one armature winding supplying high-voltage current and another low-voltage current, the output from the high-voltage winding is controlled by a circuit-interrupting voltage-regulator in the lowvoltage circuit. In supplying radio transmitting sets on aeroplanes from a variable-speed generator driven, for example, by the motor of the aeroplane, the two windings 5, 4, Fig. 1, produce high and low voltages for the constat-load plate and filament circuits 9, 7 of the valves, the lowvoltage winding also supplying a variable-load circuit such as a battery-charging and lamp circuit 14, 13. The generator may be 4-pole with shunt field 6, or may have a compound field winding or more than two armature windings. The voltage supplied to the circuits 9, 7 at variable generator speed is maintained constant by a vibrating regulator 12 in circuit with the common field 6 across the circuit 7, whilst a current regulator 22 in the circuit 14 prevents variable load in this circuit from varying the field 6 and so the voltage in the circuit 9. The regulator 22 shorts a resistance 21, or, as shown, shunts it by a second resistance 23. Voltmeters V and ammeters A may be connected as shown. In a modification allowing the full output of the winding 4 to be used to charge the battery 13 when the radio set is not in use, an electromagnet in the circuit 7 is de-energized when the current in the circuit 7 is switched off, the armature of the electromagnet then short-circuiting the regulator 23. Switches in the circuits 7, 9 are operated by common mechanism. In a similar modification, the coil of the regulator 22 has two oppositely-wound windings 33, 35, Fig. 3, producing fields adding together and connected as shown in series with the battery 13 and with the filament circuit 7 so that the current supplied to the battery is always maintained constant but at a higher value when the. circuit 7 is open and the winding 35 is de-energized.
Patent GB-1522056-A (GB)
Title: Method for viewing nuclear magnetic resonance
IPC: G01R33/46
Filed: 1976-07-20
Abstract: 1522056 Nuclear magnetic resonance A E  MEFED and V A ATSARKIN 20 July 1976 30227/76 Heading G1N A method of viewing nuclear magnetic resonance with reduced nuclear dipolar interactions, comprises the steps of: immersing a test sample of a material containing gyromagnetic nuclei into a unidirectional polarizing magnetic field set up by a magnetic system; subjecting this test sample to the effect of a radio-frequency magnetic field directed perpendicularly to the uni-directional polarizing magnetic field and set up by an exciting coil which is electrically connected to a generator of radiofrequency oscillations; selecting the amplitude of said radio-frequency magnetic field so as to exceed the average local magnetic field set up by the gyromagnetic nuclei of the test sample; viewing the component of magnetization of the test sample longitudinal to the uni-directional polarizing magnetic field at a frequency of nuclear magnetic resonance in an effective magnetic field H ef , the value of which is calculated from the relationship: where H 0  = intensity of the uni-directional polarizing magnetic field, H 1  = half amplitude of the radio-frequency. magnetic field, # = frequency of the radio-frequency magnetic field, γ = gyromagnetic ratio of nuclei in the test sample; and observing nuclear magnetic resonance by detecting changes in said longitudinal component of magnetization, viewing of said longitudinal component of magnetization being accomplished by means of a pick-up coil which is electrically connected to a detector tuned to a frequency of nuclear magnetic resonance in said effective magnetic field. Viewing of the longitudinal component may be accomplished by subjecting the sample to a variable magnetic field of frequency # oriented along the polarizing field and set up by the pick-up coil, and sweeping at least one of H 0 , H 1 , #, # so that # = γH ef . Alternatively the frequency or amplitude of the radio-frequency field may be modulated while at least one of H 0 , H 1 , #, # is swept.
Patent GB-889343-A (GB)
Title: Improvements in moulded plastic articles
Inventor: GASC PIERRE HERMES
IPC: B29C49/04
Filed: 1959-09-04
Abstract: 889,343. Blow-moulding hollow articles. L. W. G. (PLASTICS) Ltd. Sept. 5, 1960 [Sept. 4, 1959], No. 30233/59. Class 87(2). [Also in Group XVII] A handle or projection 2 is attached to a blowmoulded hollow polythene article by first locating it in a mould 3 and then blow-moulding a tube so that it covers a flange 9 on the handle. The flange is preferably cut-away as at 10 to lock the material to the handle. The tube may be blown through a lower mandrel 16. The mould parts have cutting edges 14, 15.
Patent GB-263993-A (GB)
Title: Improvements in tent poles and the like
IPC: E04H15/26
Filed: 1925-12-01
Abstract: 263,993. Hunter, E., and Wilson, J. Dec. 1, 1925. Tent poles.-A tent pole or the like is formed of sections with telescopic tubular coupling members 3, 4 fixed around the adjacent ends of the sections, and compression springs 5 disposed between the adjacent ends of the sections. A bolt 8 in one section engages slots 6 in the tube of the adjacent section to limit the relative movements of the parts. Specification 6522/96, 113,708, and 169,586 are referred to.
Patent GB-1425417-A (GB)
Title: Brake pressure control valve assemblies
IPC: B60T8/30
Filed: 1973-06-26
Abstract: 1425417 Controlling braking systems GIRLING Ltd 11 June 1974 [26 June 1973] 30332/73 Heading F2F An arrangement for controlling a braking system of a vehicle in accordance with changes in the loading of the vehicle comprises a valve having a valve actuating member 7 and a tension spring 11 directly connected to the valve actuating member 7 and tending to hold the valve open. In use the valve is mounted on the sprung or unsprung mass of the vehicle and the spring to the unsprung or sprung mass respectively. As shown the valve comprises a pressure limiting valve the valve actuating member 7 being of smaller area than a piston head 9. In a further embodiment the valve is as in Specification 1,215,806 (Fig. 4, not shown). The valve controls fluid to the rear brakes of the vehicle and in one embodiment the pressure in the front brakes may be used to augment the force of the tension spring (Fig. 5, not shown).
Patent GB-220210-A (GB)
Title: Improvements in and relating to brake and/or clutch linings
IPC: F16D69/02
Filed: 1923-12-03
Abstract: 220,210. Slade, E. Dec. 3, 1923. Clutches, friction.-A material for clutch linings comprises a fabric of fibrous material and metal having a lubricant incorporated therein. Preferably the weft of the fabric is formed of twisted strands of asbestos and cotton 1<1>, Fig. 7, interwoven with a wire 2<1>, and the warp consists of wires 4, Fig. 1, which may be of bronze, the warp strands being bent about the weft strands to form a compact fabric. A lubricant is applied to the fabric so formed either in powdered form, by spraying, or by mixing it with the impregnating material which is applied to the fabric, preferably under pressure. A mixture of powdered graphite and an impregnating material having a base of oxidized asphalt is preferably used, but a rubber compound may be employed. The impregnated fabric is folded from the ends inwardly so that the raw edges of the weft are not exposed, pressure is applied, and the folds are secured by stitching, or preferably by metallic staples 5, the open ends of which are clinched into the wearing surface of the lining. Finally the lining is pressed to shape, heated to drive off volatile constituents, and subjected to heavy pressure. In forming a clutch lining, the blank, Fig. 10, is cut so that its sides 15<11>, 16<11> are parallel to the weft, and so that both the weft and warp threads are disposed at an angle to the lines 18<11>, 20<11>, along which the fabric is folded from the ends inwardly. The diagonally opposite corners of the blank are cut away at 17", so that when the fabric is folded, tongues and pockets are formed at its ends, which may be engaged to form a joint when the lining is assembled as shown in Fig. 14. After being pressed to annular form, the lining is stitched with concentrically arranged brass staples, and is subsequently subjected to pressure, heat treatment, and a final pressing operation during which countersunk rivet holes may be formed in it.
Patent GB-656868-A (GB)
Title: Improvements in or relating to a conical paper cup and method of making the same
IPC: B65D3/06
Filed: 1948-11-25
Abstract: 656,868. Conical paper cups. LILY-TULIP CUP CORPORATION. Nov. 25, 1948, No. 30606. Convention date, Dec. 4, 1947. [Classes 66 and 94(ii)] A conical paper cup 29 is formed by winding a paper blank and adhering the overlapping outer edge 26, the pointed apex of the cup being then rounded as shown at 27 by forming a succession of pleats 28 by compression dies or by spinning the cup about mandrels, and compressing. In a modification, pleats converging towards the tip are formed instead of circumferential pleats. The tip of the cup may be impregnated with wax or plastic, or such material may be applied to the blank. The rim of the cup may be rolled to form a bead 43.
Patent GB-1075543-A (GB)
Title: Tyre building apparatus
IPC: B29D30/28
Filed: 1964-08-04
Abstract: 1,075,543. Tyre-building apparatus. AKRON STANDARD MOLD CO. Aug. 4, 1964 [July 19, 1963], No. 30649/64. Addition to 977,178. Heading B7C. The tyre-building apparatus disclosed in Specification 977,178 is modified in that each rotatable means 8, 9 for altering the shape of the expansible ply turn-up diaphragms is pivotally movable in a plane at an acute angle to the building drum axis. The means 8, 9 are each adjustably supported on g plate 68 for angular orientation relative to the drum 1 in a generally horizontal plane so as to vary the said acute angle. The diaphragm displacement wheels 10 (see also Fig. 4, not shown) are each pivoted towards or away from the drum by a fluid piston-cylinder 74 and are mounted on a base plate 66 angularly adjustable on the associated plate 68 by a nut-and-bolt 69 slidably received in a slot 70. Each plate 68 is movable in a horizontal plane by loosening nut-and-bolt assemblies 73 slidably received in slots 71, 72. The piston-cylinders 74 may be actuated simultaneously or independently.
Patent GB-741303-A (GB)
Title: Improvements in or relating to apparatus and methods for welding electric cable sheaths
IPC: B21C37/08
Filed: 1952-12-03
Abstract: 741,303. Welding by fusion. PIRELLIGENERAL CABLE WORKS, Ltd., and DONELAN, J. A. Dec. 2, 1953 [Dec. 3, 1952], No. 30674/52. Drawings to Specification. Class 83 (4). In apparatus for electric-arc welding the longitudinal or helical seam of a metal cable sheath in which during welding the sheath moves past a normally stationary welding torch, the torch is movable parallel to the seam for starting and re-starting of welding. The apparatus is identical with that described in Specification 741,302.
Patent GB-675826-A (GB)
Title: Improvements in or relating to apparatus for controlling the airspeed of an aircraftduring an automatic landing
IPC: G05D1/06
Filed: 1948-04-14
Abstract: 675,826. Automatic speed control systems. BENDIX AVIATION CORPORATION. April 14, 1948. [April 18, 1947] No. 30696/50. Divided out of 675,755, [Group XXXV]. Class 40 (i). The airspeed of an aircraft is controlled during automatic landing by signals, e.g. from a glide path computor such as that described in Specification 675,751, [Group XXXV]. As shown, in a twin engined aircraft having a synchronising system as described in Specification 675,755, [Group XXXV], the speed of both the master and slave engines 11, 12, respectively, is controlled by a voltage applied at 13 to the servo-amplifiers 21, 28 of two similar systems controlling the engine throttles 14, 22. Amplifier 21, e.g. energizes a two-phase servomotor 16 driving through gearing or linkage 15, 32 the throttle 14 and a displacement feedback pickoff 30. The voltage from the synchronising system of Specification 675,755, [Group XXXV], is injected into the amplifier 28 from an inductive pickoff 70 in series with the speed control voltage.
Patent GB-990484-A (GB)
Title: Improvements in or relating to electromagnetic flowmeters
Inventor: BIRNSTINGL DAVID WILDON
IPC: G01F1/58
Filed: 1962-08-10
Abstract: 990,484. Induction flowmeters. MAWDSLEY'S Ltd. Aug. 2, 1963 [Aug. 10, 1962], No. 30707/62. Heading G1N. In a detector head, the coils creating the magfield comprise two complementary sets 14-17, 18-24 mounted on opposite sides of a flowmeter tube 10, the individual coils of each set being of generally rectangular form and of graded sizes and having their minor sides bent so that the major sides lie side by side around the tube parallel with the tube axis. The number of turns in the coils may be determined experimentally to produce a homogeneous field; and the magnetic circuit is completed by a laminated casing 23. The tube has an internal insulating tube 12 and carries a non-magnetic coil support ring 22 to which the coils may be held by a band or tape. In a modification, laths which extend past the ends of the coils are attached to the long sides of the coils and the ends of the laths are secured to the tube by bolts or studs. The long sides of the coils are held down by wedge shaped clamps described with reference to Fig. 5 (not shown).
Patent GB-1475382-A (GB)
Title: Logical synchronization of test instruments
IPC: G01R13/28
Filed: 1974-07-11
Abstract: 1475382 Testing digital systems HEWLETTPACKARD CO 11 July 1974 [20 July 1973] 30758/74 Heading G1U An electronic test instrument, for example a c.r.t., is synchronized with a multi-channel digital device under test, by examining the digital signals on one of the channels and producing a triggering signal for the test instrument when a particular pattern of signals occurs, and some other particular event - which may be dependent upon the signals occurring on the other channels or upon absolute time - also occurs. Five possibilities are discussed, in all of which a particular pattern, such as "0010" in channel 4, has to occur within a particular time window for it to be effective to cause a triggering signal to be generated. In the first possibility, Fig. 2, the window signal is produced by sequences of ones, 15, 17, on channel 5. In the second, Fig. 3, the window is started and stopped by ones 19, 21 on channel 5. In the third, Fig. 4, the window lasts for a fixed duration and is started a fixed time t 1 , after a pulse on channel 5. In the fourth, Fig. 5, the window starts a time t 2  after a pulse 24 on channel 5 and continues until the particular pattern 0010 is found. In the fifth, Fig. 6, the window starts when ones 23 are present simultaneously on all three channels 1, 2 and 3. Two block diagrams, Figs. 7 and 8 (not shown) are described for producing triggering pulses.
Patent GB-944092-A (GB)
Title: Weatherproof lift cover plate for electrical wiring devices
IPC: H01R13/447
Filed: 1962-08-10
Abstract: 944,092. Preventing corrosion and access of moisture; two-part couplings; switch covers. HARVEY HUBBELL Inc. Aug. 10, 1962 [April 25, 1962], No. 30815/62. Headings H2B and H2E. [Also in Division E2] A weatherproof lift cover-plate for a box containing an electrical wiring device consists of a plate and lid of non-corrodable material, the lid being hinged to the plate by a plastic pin. As shown, the plate 18 has a lug 30, and the lid 12 has a pair of lugs 46, 48 through apertures in all of which a nylon hinge pin 60 is passed. Lug 46 has a larger aperture to receive a steel spring 14 one end 58 of which engages a hole in lug 30 while the other end engages a slot in the face of lug 46, and the spring is arranged to bias the lid to the closed position. Lug 48 has a splined aperture so that when the pin 60 is forced into position the splines cut into the pin and firmly retain it. The head 62 of the pin 60 abuts the face of the lug 46 and retains the spring 14. The plate has access apertures which are covered by the lid and are surrounded by ridges. The lid is also provided with ridges and a rubber sheet so that when the lid is closed the ridges press on the sheet and form a weatherproof seal.
Patent GB-801808-A (GB)
Title: Improvements in retarding apparatus
Inventor: LOBELLE MARCEL JULES ODILON
IPC: B64F1/06
Filed: 1955-10-28
Abstract: 801,808. Hydraulic retarding apparatus. M. L. AVIATION CO., Ltd. Oct. 26, 1956 [Oct. 28, 1955], No. 30918/55. Class 108(3) Apparatus for arresting the travel of high speed bodies comprises a plunger 4 supported in line with a cylinder 5 and forming a sealing fit with an opening formed in a chamber 14 whereby, prior to operation, the cylinder 5 may be kept full of liquid which is expelled into the chamber 14 when the plunger enters the cylinder under the impact of the body to be arrested. As shown, the plunger 4 is rigid with a second cylinder 2 which is slidable on rails 3 and is full of liquid which is retained by a frangible seal 39. The body to be arrested carries a plunger 40 which in operation is first retarded by penetration of the cylinder 2 which thus urges the plunger 4 to penetrate the cylinder 5. Liquid is maintained in the latter by flow through an inlet valve 20 and an outlet orifice 21. The device is duplicated, there being two sets side-by-side, Fig. 2 (not shown). Specification 760,481 is referred to.
Patent GB-307954-A (GB)
Title: Method of and apparatus for producing pirns and the like
IPC: B65H54/14
Filed: 1927-11-18
Abstract: 307,954. Smith, W. Prince-, and Waterhouse, D. Nov. 18, 1927. Building - motions; stop - motions.-In a machine of the cap, flyer or ring type wherein yarn is " worhed " (i.e. spun, twisted or folded) as well as wound into pirn or like form, either individually or by groups, an automaticallyoperating control mechanism is provided serving on the breakage of any thread to arrest the corresponding building unit whilst the remainder proceed to operate normally, The yarn is drawn from a supply bobbin 31D, Fig. 1, by a dolly roller 31 and passes through a trap lever F to the pirns A carried by live spindles in a rail B, being wound thereon by a ring-and-traveller D, E. Each ring-plate 25 is carried by a squared rod 1, Fig. 2, guided by a bush 2 in rail B and is traversed by a heart-cam 29. Each rod 1 is advanced to build the pirn by a forked tappet 28 on a reciprocating rod 27 actuating a ratchetwheel 5 through a lever 10 whereby the screwed lower end of the rod 1 is moved upwardly in the split nut 4. The rod 1 is reduced at 1<B> to ensure that the upward feed ceases on completion of the pirn. Each roller 31 is mounted on a vertical arbor 31A and is supported on a bracket 33 pivoted at 33<A>, wire connecting- members 34, 36 serving to maintain in mesh the wheels 31B, 31c through which the roller 31 is driven. On completion of the pirns tumblers 40 are thrown over by contact with strikers 41 and sever the threads, the trap levers F thereupon moving angularly upwards and withdrawing the support of their tail members F1 from the toes 33D of the roller brackets 33 which tilt on to the line y-z. This movement through the members 34, 36 also stops the feed of the ratchetwheel 5. This sequence of operations also takes place automatically on breakage of a thread. In a modification for twisting or folding two or more threads together each thread supports a detector wire 42, Fig. 7, which falls into contact with a wiper 46 on breakage of its thread whereby the gear-wheels 31B, 31c are separated and the spindle drive and traverse stopped.
Patent GB-1159493-A (GB)
Title: Metal Chelates
IPC: C08K5/22
Filed: 1966-07-11
Abstract: 1,159,493. Bicyclononanedione derivatives. AIR PRODUCTS & CHEMICALS Inc. 11 July, 1966 [9 July, 1965 (2)], No. 31050/66. Heading C2C. [Also in Division C3] The invention comprises lead chelates of bicyclononanedione of formula where X and X<SP>1</SP> are alkyl or aryl groups or salt-forming metal ions or ammonium ions. The chelates are prepared by adding a solution of a lead salt in an organic solvent to a solution of the appropriate bicyclononanedione tetracarboxylic acid ester in an organic solvent, adjusting the pH to 7 to 10 and separating the precipitated chelate. When X and X<SP>1</SP> are methyl the carbomethoxy groups may be hydrolysed to acid groups and metal or ammonium salts formed. In examples, lead acetate is reacted with bicyclononanetetracarboxylic acid tetramethyl ester in methanol. Formazan derivatives of formulµ where Y and Y<SP>1</SP> are OH, Cl, Br, alkoxy, OC 6 H 5 , NH 2 , NHR or RNR where R is alkyl, phenyl, nitrophenyl or chlorophenyl, and Z is H, Cl, Br, carboxyl, nitro, alkyl or phenyl, are obtained by diazotization of aniline and substituted anilines and reaction of the diazonium salt with dimethyl malonate and, in some cases, further converted to acids, from which are obtained other esters and acid halides, the acid halides being used to obtain esters and amides.