baber/WOPTO huggingface dataset:
Patent GB-724918-A (GB)
Title: Improvements in or relating to methods for the manufacture of bags and sachets
IPC: B31B1/90
Filed: 1953-01-23
Abstract: 724,918. Packaging; making bags. CELLOPHANE INVESTMENT CO., Ltd. Jan. 23, 1953 [Feb. 15, 1952], No. 2026/53. Classes 94 (1) and 94 (2). Flat bags with rip-cords are made by feeding continuously a strip of bag material, securing a continuous length of rip-cord material to the strip at a position spaced from its longitudinal centre line, folding the strip about its longitudinal centre line to enclose the length of rip-cord, heat-sealing the folded strip to form transverse seams at intervals, cutting through the centre lines of the seams to form bags each having marginal seams and a ripcord extending therethrough, and providing cuts in the material of each bag extending partly through one or each seam on each side of one or each end of the rip-cord so that'the latter may be bent up and grasped. The cuts may be formed prior to, simultaneously with, or after the separation of the bags from the strip. In a modification, the folded strip is replaced by two superimposed strips heatsealed together along one longitudinal margin. As shown in Fig. 2, incisions 5, 5<SP>1</SP> are made in each transverse seam 4 on either side of the length of rip-cord 2 so that either end 7 or 7<SP>1</SP> of the rip-cord in a completed bag 6 may be bent up and grasped. Alternatively, the incisions may be made in alternate seams or non-centrally in each seam so that only one end of the rip-cord may be bent up. In a modification, Figs. 3, 4 and 5, the strip of bag material is formed with pairs of holes 8 at equal distances from the fold line so that when the strip is folded and heat-sealed the holes are superimposed and are positioned centrally of the seams, the ends of the rip-cord in a completed bag being thus left exposed. Alternate pairs of holes may be omitted-so that only one end of the rip-cord is left exposed, or the holes may be formed on one side only of the fold line and the heat-sealing tool so designed that it does not apply pressure over the areas of the holes, whereby the ends of the rip-cord in a completed bag will be left free but only one side thereof will be exposed. Specification 703,756 is referred to.
Patent GB-1529532-A (GB)
Title: Check valve assemblies
IPC: F16K15/03
Filed: 1977-01-19
Abstract: 1529532 Valves FMC CORP 19 Jan 1977 [23 Feb 1976] 02046/77 Heading F2V Lugs 70, 72 on the downstream side of check valve closure flaps 16, 18 are wedged against a stop shaft 26 so that the flaps remain in a stable open condition during high flow. The shaft 26 and the shaft 20 which supports the flaps are loosely mounted in the valve housing so that they may be forced together when the lugs 70, 72 engage the shaft 26. A resilient sealing ring 52, 54 for each flap 16, 18 comprises a main body portion which provides a seal against high back pressure and a bead 80, 82 which seals the valve against low back pressure. The sealing rings 52, 54 form the invention of Specification 1,529,533.
Patent GB-1527482-A (GB)
Title: Single servo driven printer
IPC: B41J23/02
Filed: 1977-01-19
Abstract: 1527482 Selective printing SINGER CO 19 Jan 1977 02129/77 Heading B6F A single motor 24 powers movement of print head carriage 18 and transport of record medium 22. The lead screw 20 is continuously coupled to the motor 24; clutch 48 selectively couples the platen 12 and tractors 34 to the motor 24. Other arrangements omit the tractors 34, or provide two pairs of tractors or provide split platens or permit bidirectional printing.
Patent GB-1325523-A (GB)
Title: Resilient plastics material and process for forming the same
IPC: C08L27/06
Filed: 1971-01-15
Abstract: 1325523 Quivery resilient polyvinyl chloride material ROYALTY DESIGNS OF FLORIDA Inc 15 Jan 1971 [4 Feb 1970] 2141/71 Heading C3P A quivery resilient plastics material comprises polyvinyl chloride having a plasticizer to resin ratio of 12 : 1  35 per cent (by weight). The material may be obtained by forming a liquid mixture of polyvinyl chloride with the plasticizer in a plasticizer to resin ratio of 12 :135% (by weight), heating the liquid mixture until it assumes a first high temperature, gel state, continuing the heating to a higher temperature until the gel is converted to a liquid state and then reducing the temperature to solidify the mixture. The cooling may be effected by applying the liquid from the higher temperature heating stage, e.g. by spraying, to a surface to be protected, e.g. a metal surface, and cooling to effect solidification on said surface. The final material should preferably have a thickness of from 1 to 1¢ inches or 2 inches and is particularly adapted for use as a non-bottoming cushion or pad having heat insulating and coldretaining properties suitable for application to the body. When the plasticizer is one of the usual oily type it gradually speeds out from the quivery product material and this enables the material to provide a cooling and lubricating effect when applied to a surface. Commercial plasticizers are referred to.
Patent GB-570780-A (GB)
Title: An improved method of lubricating refrigerator compressors and the like
IPC: F25B31/00
Filed: 1944-02-05
Abstract: 570,780. Lubricating systems. PRESSED STEEL CO., Ltd., and ROWLEDGE, E. G. Feb. 5, 1944, No. 2142. [Class 12 (iii)] The valves and cylinder of a refrigerant compressor are lubricated by passing the refrigerant vapour on the suction stroke through a converging-diverging passage 19, to the throat of which oil is led and so atomised and entrained in the vapour. The auxiliary sump 10 is connected by a passage 21 and a small hole 22 to the throat of passage 19, the oil becoming atomised. The vapour then passes to the suction side of the compressor and on its return enters the casing through a rectifying chamber where the oil separates and is led to the main sump.
Patent GB-110854-A (GB)
Title: A Device for use when Fitting and Testing Artificial Legs.
Inventor: ERNST EMIL
IPC: A61F2/76
Filed: 1917-02-14
Abstract: 110,854. Ernst, E. Feb. 14, 1917. Limbs, artificial.-An appliance for use in testing or fitting legs comprises a shoe or slipper A worn on either the natural or the artificial foot of the patient, one or more loose soles or socks C of standard thickness being inserted in the shoe until the correct length of the leg is ascertained, as a result of a walking test. The shoe is provided with fastening straps B, as shown.
Patent GB-362746-A (GB)
Title: Improvements relating to rust-proofing iron or steel surfaces
IPC: C23C22/83
Filed: 1931-01-23
Abstract: An iron or steel article on which a phosphate coating has been formed which contains a metal which has a different electric potential from iron and is in the metallic state, e.g. a phosphate coating containing metallic copper, is subjected to the action of a solution, preferably hot, containing the chromic acid radical to increase its resistance to rusting.  A solution of a chromate, e.g. potassium chromate, containing from 1 to 5 grams of chromate per litre of water, or a solution of chromic acid containing from 2 to 3 grams per litre of water, or a solution of potassium bichromate may be used.
Patent GB-1029035-A (GB)
Title: Amine-modified hydrocarbon polymers
IPC: C08K3/22
Filed: 1963-01-18
Abstract: A copolymer of an alpha-olefin having the general formula RCH=CH2, where R is hydrogen or an alkyl radical having 1 to 8 carbon atoms, the olefin content of said copolymer being at least 50 mole per cent, based on the copolymer and an alpha, beta ethylenically unsaturated monocarboxylic acid, the acid monomer content of said polymer being from 0.2 to 25 mole per cent, based on the copolymer, said copolymer having at least 10% of the acid groups in the ionized form, -COO-, and containing uniformly distributed throughout the copolymer a diamine radical having the general formula <FORM:1029035/C3/1> where R1 is hydrogen or an alkyl radical of from 1 to 5 carbon atoms, R11 and R111 an hydrogen or an alkyl radical of from 1 to 5 carbon atoms, or alkylene radicals having from 1 to 10 carbon when R11 and R111 are combined, X is a carbon to carbon bond, oxygen, sulphur, an imine radical, carbonyl radical or phenylene radical, m is 0 to 4, and n is at least 1, said diamine radical being present in sufficient quantity to neutralize at least 10% of the acid groups, the diamine having a dissociation constant of at least 10-8.  The base copolymer may be obtained by conventional methods or by grafting the acid comonomer to a polyolefin base, e.g. by reacting the base olefin with a peroxide or by exposing it to varying radiation and subsequently reacting with the acid monomer.
Patent GB-577870-A (GB)
Title: Improvements in and relating to variable-pitch propellers
IPC: B64C11/44
Filed: 1943-03-11
Abstract: 577,870. Automatic control systems. NEWPORT, H., CHILMAN, J. A., MORRIS, E. H., and STREETE, R. H. March 11, 1943, No. 2308. [Class 38 (iv)] [Also in Groups XXXIII and XXXVII] In an electrically adjusted variable pitch propeller the pitch changing motor 15 is controlled by a generator 20 connected to it in a Ward-Leonard control system, the current through the field winding 22 of the generator being varied by two controls such as 24, 23, one of which is adjusted by variations in the speed of the propeller and serves to maintain the speed constant, and the other of which is manually adjusted and serves to select the constant speed. In the arrangement of Fig. 1 the controls are tappings on a potentiometer and determine the direction and strength of the current through the motor. With increase of propeller speed, the contacts 24, 23 move from their normal position opposite each other, causing the motor 15 to coarsen the pitch of the propeller thereby reducing the propeller speed and causing the contacts once again to approach each other. In a modification, Fig. 2, a battery 21 is arranged in opposition to an additional generator 26 driven in accordance with the propeller speed and normally exactly balancing the battery. With change of speed a current flows through the field winding 22 of the generator 20. In a further development of this arrangement, Fig. 7, 8 (not shown), a generator 20, preferably of the " Amplidyne " type (R.T.M.), supplies the motor 15 through two alternative lines according to the direction of the current, rectifiers or a polarised relay selecting the particular line, and two limit switches, operated by pitch changing movements of the blades are arranged in the two lines. A three-way switch is also provided which can cut out the automatic control and put the full voltage of the battery 21 in one direction or the other across the field winding 22, thereby providing a maximum " coarse pitch " and " fine pitch " adjustment.
Patent GB-304776-A (GB)
Title: An arrangement for improving the commutation in dynamo electric machines
IPC: H02K3/16
Filed: 1929-01-23
Abstract: 304,776. Allmanna Svenska Elektriska Aktiebolaget. Jan. 27, 1928, [Convention date]. Armatures, dampers and short - circuited screens on cores of.-For improving the commutation of dynamo-electric machines in which a conducting loop embraces certain conductors on the armature, the loop is closed through other conductors on the armature which occupy a different position with respect to the commutating zone. It is explained in the Specification that in order to obtain effective damping towards the end of the commutation period with a closed loop such as 4, Fig. 1, the rising portion of the curve id, Fig. 2, representing the current in the loop should be as straight as possible. Also to reduce copper losses in the damping loops, the current should drop rapidly to zero after the termination of the commutating period. This mav be accomplished by introducing a counter E.M.F., for example by connecting together the open ends of two loops situated in slots at a distance apart equal to the width of the commutating zone. In another arrangement to give reduced losses, the open ends of the loops in all the slots are connected to end rings, and resistances or inductances are introduced into one of the rings. As shown in Fig. 7, the end ring 42 is in series with loops 5 wound in slots 8 in an auxiliary core 7 and the inductance of the loops may be determined by appropriate dimensioning of the interconnecting slits 9. The inductances 5 may be wound on a smooth or toothed core 17 as in Fig. 9 and an auxiliary pole system 10, 11 mav be employed to influence the current in the damping coils as required. The centre pole 11 may be omitted, or a stationary flux path may be provided having recesses opposite the commutating zone. Variation in the inductance of the damping coils may also be obtained by connecting the ends of the inductance coils 5, Fig. 12, to a commutator 13 upon which bears a brush 14 at the commutating zone. In order to damp the flux from the peripheral faces of the teeth, the closed ends of the loops 4 may be connected to a commutator 15, Fig. 14, on which bear interconnected brushes 16, whereby closed conducting paths are formed around some of the teeth. Fig. 15 shows a practical form of loop surrounding the upper conductor of a slot; the upper conductor 4<1> of the loop should extend radially outwards as far as possible and is therefore given a T-shaped cross-section. Fig. 16 shows a form in which the upper portion is divided into two parts 4<0>, 4<1> and the lower portion 4<11> is disposed at the side of the bottom slot conductor. In Fig. 18, a loop 4<0>, 4<111> is arranged to surround both the conductors in the slot, and' a loop 4<1>, 4<11> surrounds the upper conductor only, the two loops being connected in series. Subdivided conductors may be used for the damping loops. The Specification as open to inspection under Sect. 91 3) (a) gives a mathematical analysis of the considerations affecting the damping action of a closed loop. This subject-matter does not appear in the Specification as accepted.
Patent GB-357051-A (GB)
Title: Improvements in rotary folders for paper-bag making and similar machines
IPC: B31B23/00
Filed: 1931-01-24
Abstract: 357,051. Making paper bags &c. ROWLES, S. G., Kethro, St. John's Road, Orping- ton, Kent, and FENDER, P. R., 85, Philbeach Gardens, Earl's Court, London. Jan. 24, 1931, No. 2393. [Class 94 (ii).] In applying a turned-over end or a transverse fold to a paper web or tube in paper bag &c. making by means of rotary folders comprising a slotted cylinder housing a movable nipping element and a coacting cylinder provided with a reciprocating tucking blade, the nipping element normally presses against the leading edge of the folding g slot, and co-operates with means which cause it to open momentarily for the tucking operation, to close for nipping while the slot cylinder makes a partial rotation and then to open momentarily for releasing the folded end. A rigid bar or nipper 17 is maintained in contact with the leading edge of a slot 16 in a cylinder S by a spring-pressed curved lever 22, Fig. 5, pivoted at 23 to an arm 21 rigidly secured to the bar which is rotatably mounted in the ends of the cylinder S. A tucking cylinder T, associated with the cylinder S, carries a double cam 25 having humps spaced apart so as to depress the lever 22 and thereby open the nipper 17 in the rotation of the cylinder S at successive points less than a quarter of a revolution apart. The tucking cylinder T rotates about a fixed shaft 7 provided with two cams 8 and is provided with a tucking blade 1 secured to a holder 2 adjustably mounted in a slot 3 in the cylinder, the holder 2 being drawn against the cams 8 by springs 9. As the cylinder T rotates, the cams 8 thrust out the blade 1 and tuck the paper tube into the slot at the moment when the nipper bar 17 is displaced from the edge 16 of the slot, withdrawing the blade as the nippers close. To ensure exact co-operation, the shaft 7 is adjustable in the machine frame F over a small angle. If the bag end is to be gummed, a pasting blade 14 on the cylinder T, collects gum from a roller 15 in a trough P and applies it to the blank immediately prior to the folding. The cylinder T is driven from the shaft of the cylinder S and the cylinder S is adjustably mounted on its shaft to permit it to be set independently of its drive. Specification 357,034 is referred to.
Patent GB-927135-A (GB)
Title: Turbo transmitters
IPC: F16H61/50
Filed: 1961-01-20
Abstract: 927,135. Hydraulic couplings and converters. J. M. VOITH G.m.b.H. Jan. 20, 1961 [Jan. 22, 1960], No. 2414/61. Class 69 (2). A turbo transmitter comprises an annular slide 5, Fig. 1, insertable axially into the working circuit of the transmitter, the slide being guided externally of the working circuit and by a guide 12 provided in the working circuit itself. In a torque converter having an impeller 1, runner 2 and reactor 4, the slide 5 is guided on a surface 6 in the casing 3 and by the edges 12 of the reactor blades 4, and is movable by hydraulic or pneumatic pressure supplied through a pipe 7. A seal 14 is provided between the inner surface of the slide and the housing. In another embodiment, the slide is movable from a recess within the annular core space 20. In an hydraulic coupling, the impeller blades 15a are formed with edges 21, 22 and the slide 17 is guided by surface 18 in the casing and the edges 21. A seal 24 is provided to close a gap 23. In order that the slides may move without tilting or jamming, the fluid supply for moving the slides passes through two passages of approximately the same length leading from a manifold to diametricallyopposed points on the slides.
Patent GB-1166316-A (GB)
Title: Polymerization of Aromatic Polyisocyanates
Inventor: LIEBSCH DIETRICH
IPC: B41L11/00
Filed: 1967-01-17
Abstract: 1,166,316. Polymerization of aromatic isocyanates. FARBENFABRIKEN BAYER A.G. 17 Jan., 1967 [2 Feb., 1966], No. 2426/67. Heading C2C. [Also in Division C3] Polyisocyanates containing one or more isocyanurate rings are prepared by reacting at - 20‹-150‹ C. an aromatic polyisocyanate with an aliphatic, cycloaliphatic or araliphatic isocyanate, in such proportions that more than 0.5 aliphatic -NCO groups are present per aromatic -NCO group in the presence of an aliphatic, araliphatic, mixed aliphatic-araliphatic or mixed aliphatic-aromatic phosphine, the reaction being stopped by addition of an inhibitor therefor while the reaction mixture is substantially colourless and free from uretdione groups. The invention also includes a composition of matter comprising essentially a compound of the formula It is preferred to effect the reaction at 40‹- 120‹ C. in the presence of 0À001-0À1% by wt. of phosphine using 0À5-10 aliphatic -NCO groups per aromatic-NCO group and stopping the reaction when the -NCO content has fallen to 50% of its initial value by addition of, e.g., alkylating or acylating agents. The non- aromatic isocyanate reactants are thought to act as co-catalysts for the reaction and the ratio of aromatic to non-aromatic groups in the isocyanurate products is usually greater than the ratio in the reactants. The nature of the product also depends on the extent to which the reaction is allowed to proceed. At yields of up to 20%, mono-isocyanurates are obtained, but if the reaction proceeds further products of higher molecular weight corresponding to the formula are obtained, where n is an integer, Ar represents an arylene radical and Alk represents an alkylene radical. In examples isocyanate reactants are selected from 2,4-toluylene diisocyanate, 2,4<SP>1</SP>- and 4,41 - di - isocyanato - diphenylmethane and 1,6 - hexamethylene diisocyanate, dicyclohexylmethane - 4,4<SP>1</SP>- diisocyanate, 1,4 - tetra methylene diisocyanate, 1 - isocyanato - 3 - isocyanatomethyl - 3,5,5 - trimethylcyclohexane, 6 - chlorohexylisocyanate and 1 - methyl - 2,4 - diisocyanato - cyclohexane.
Patent GB-1056243-A (GB)
Title: Improved filament construction for measuring bridges
IPC: G01N27/74
Filed: 1964-01-20
Abstract: 1,056,243. Resistor filaments for measuring bridges. CHARBONNAGES DE FRANCE. Jan. 20, 1964 [Jan. 21, 1963], No. 2435/64. Heading G1N. [Also in Division Hl] An electric filament for a measuring bridge (e.g. in a catharometer, an anemometer or an optical pyrometer) comprises a helical resistor whose terminal ends extend 2, 3 (Fig. 3A) perpendicular to the axis of the helix and are fixed to parallel conductive supports 4, 5 of equal length. In addition the pitch of the turns of the helix may be non-uniform. The filament material may be of platinum. It is stated that the distance between the supports 4, 5 and their lengths are such as to obtain a controlled uniformity of the radiation effect of the filament. A table of comparative results of tests using different sizes of wire and support spacing, related to the frequency of ignition of a gas by the filament, is given.
Patent GB-1486724-A (GB)
Title: Wheeled tractor-bowl scraper combinations
IPC: E02F3/64
Filed: 1975-01-20
Abstract: 1486724 Earth-moving bowl type scrapers CATERPILLAR TRACTOR CO 20 Jan 1975 [31 Jan 1974] 2444/75 Heading E1F The jamming of rock spillage from the bowl 15 of a tractor-towed bowl scraper between the draft arms 14 and the sides 23 of the bowl 15 is prevented by securing directly or indirectly to each of the draft arms a guard means 17 that has an inner edge 22 spaced from the adjacent side wall 23 a distance d that is less than, preferably less than a half, the distance D between the draft arm 14 and the side wall 23. The guard means preferably comprises a flat plate 18 extending the length of the draft arm and provided with elongated slots 21 that allow of it being secured by bolts 20 to the arm 14 or to a block 19 secured to and extending along the arm so that it may, when it is so desired, be laterally adjusted with respect to the arm.
Patent GB-1406406-A (GB)
Title: Apparatus for adjusting the distance between two planes
IPC: H05K13/00
Filed: 1973-01-17
Abstract: 1406406 Aligning original with copy material ELEKTROMAT VEB 17 Jan 1973 2453/73 Heading G2A [Also in Division F2] Apparatus for adjusting the distance between two planes, one plane being fixed and the other being movable in a direction substantially normal to the fixed plane, comprises an axially movable slide 2 which carries the movable plane e.g. a wafer 3, and a lever system comprising a coarse adjustment lever 12 and fine-adjustment lever 13 controlled by drive means 4, 5. In operation a vacuum is applied to drive means 5 which acts on the coarse-adjustment lever 12 via a stop 11, causing the lever to rotate anti-clockwise about a pivot pin 14, with which the lever is integral, and lower the slide 2. A wafer 3 is then placed on an object holder 1 mounted in spherical bearings on the slide 2. The means 5 is vented and lever 12 pivots clockwise under the influence of spring 6, raising the slide and bringing wafer 3 into contact with the fixed plane, e.g. a stencil (not shown). Holder 1 moves in its bearings bringing the wafer parallel to the fixed plane. Vacuum is now applied to disc brakes 7, 8 to arrest the lever system in its assumed position. Vacuum is applied to drive means 4 to pivot fine adjustment lever 13 anticlockwise about fulcrum 21 to lower slide 2 a distance determined by a stop 13a on lever 13 engaging an adjustable stop 10. Once the desired alignment between the wafer and stencil is complete means 4 is vented and lever 13 again pivots moving slide 2 upwards and bringing the wafer 3 and stencil again into contact.