baber/WOPTO huggingface dataset:
Patent GB-350498-A (GB)
Title: Wave filter circuits
IPC: H03H7/01
Filed: 1929-12-09
Abstract: 350,498. Filter circuits. CAUER, W., 35, Friedlanderweg, G÷ttingen, Germany. Dec. 9,1929, No. 37665. Convention date, Dec. 7, 1928. [Class 40 (iii).] The Specification describes a method of classifying and designing wave filters so that they may have an optimum characteristic and be free from superfluous impedance elements. Any symmetrical filter is equivalent to a lattice filter, Fig. 1, having equal opposite arms z1z2, where z2/z3 determines the propagation constant and z1, z2 the image impedance. The impedances z1 z2 are to have values determined by formulµ for z1 z2 and z1/z2 which are tabulated in the Specification for four types of filter (bandpass, low- and high-pass, high-pass and low-pass) and for various numbers of impedance elements. Fig. 4 shows in canonical form a band-pass filter which is equivalent to that shown in Fig. 1 provided that z1, z2 have the forms shown in Fig. 2, and that the dimensions be as indicated in the figures. The tables give for z1 the formula m#(#<2>+#-1) (#<2>+#<2>u)/Á(#<2>- #<2>alpha) (#<2>-#<2>-alpha) (#<2>-#<2>-a), where # is 2##(-1) times the frequency, # -1 is one of the cut-off frequencies, #a #a, w-a, #α are arbitrary parameters selected to yield desired characteristics, and m, Á are constants. The tables give formulµ of similar form for z2. These formulµ can be split into partial fractions such as #D2/ (#<2> + D2/L2), whence the D's and L's indicated in the figures can be expressed in terms of the parameters mentioned above. If z1, z2 have one or more coincident poles or zeros, the number of impedance elements can be reduced, Fig. 5 (not shown). Figs 8 and 9 (not shown) comprise graphs showing the advantages of filters according to the invention over known filters, Figs. 6 and 7 (not shown). The invention can be applied to asymmetrical filter circuits, which are equivalent to circuits of the type shown in Fig. 4 coupled with ideal transformers. It can also be applied to multi-band filters, the formulµ for z1 z2 and z1/z2 being in this case the products of the corresponding formulae for the component bands. In filters according to the invention, a straight line parallel to the frequency axis can be drawn so as to cut the characteristic in four points for each transmission band. For small numbers of impedances, filters yielded. by the formulae degenerate into known filters, which are distinguished numerically in the Specification.
Patent GB-1110555-A (GB)
Title: Apparatus for stacking in layers material in bar or rod form
IPC: B65G57/18
Filed: 1965-09-03
Abstract: 1,110,555. Stacking machine. SIEMAG SIEGENER MASCHINENBAU G.m.b.H. 3 Sept., 1965 [8 Sept., 1964], No. 37771/65. Heading B8C. In a machine for grouping and stacking bars, e.g. rolled steel sections, groups of bars are lifted off a conveyer and transferred to pivoted magnetic grippers 16, Fig. 2, which then deposit them on to a stacking conveyer 8, table or truck, inverting alternate groups. In one embodiment, Figs. 1, 2 (former not shown), bars 1 are delivered from a straightening machine (2) on to vertically movable rollers 4. When a bar has fully emerged from the straightening machine these rollers 4 are retracted below the plane of driven rollers (6), set at an angle to the rollers 4, which cause the rod 1 to move sideways against a stop ledge (not shown). When a sufficient number 1a have been grouped on the rolls 6, vertically reciprocating arms 11 are raised from below to above the plane of the rollers 6 to lift the layer la from the roller track. The arms 11, carried by members 10 movable along guide rails 12, are then moved to a position above a stationary stacking roller track 8. In this position, for the first layer of a stack the arms 11 are lowered below the level of the conveyer 8, to deposit the layer on the conveyer. Subsequently they are moved towards the bottom or the top of rotatable magnets 16, pivoted at 17 on vertically reciprocating arms 15. In the former case, as the arms 11 move away from the conveyer 8. the magnets 16 are lowered to deposit the layer on the stack. In the latter case before the layer is deposited on the stack, the magnets are rotated in a vertical plane through 180 degrees, so that this layer is inverted with respect to the immediately previous layer. When a sufficiently large stack has been formed, the conveyer is started to remove the completed stack 1b In place of the conveyer 8, a stacking table or truck may be used, in which case the arms 15 are fixed and the plane of the truck or table is raised or lowered. In a second embodiment a chain conveyer 23 on which individual layers 1a have already been formed is used in place of the feed roller 4, 6.
Patent GB-1393159-A (GB)
Title: Scaffolding
IPC: E04G11/48
Filed: 1972-08-14
Abstract: 1393159 Scaffolding SOC NOUVELLE DES ECHAFAUDAGES TUBULAIRES MILLS 14 Aug 1972 [16 Sept 1971] 37822/72 Heading E1S Scaffolding comprises vertical uprights 1 con nected end-to-end, and bracing frames 4 interconnecting the uprights, each frame 4 comprising a cross-member 5 having at its ends engaging means, e.g. spigots 6, co-operating with engaging means e.g. sockets 3, on the uprights 1, and a further member 7 secured at an angle to the cross-member 5 and having at its remote end securing means 8 for connecting to the adjacent bracing frame 4. The frames 4 are preferably triangular, with the connecting means 8 at the apex engaging the adjacent frame's cross-bar 5. The uprights 1 may have sockets 2 at their lower ends to engage over the next lower uprights and to prevent removal of the spigots 6 from the sockets 3 near the tops of the lower uprights. Where extension elements 9 are telescopically located in the uprights 1, e.g. at the top of a tower, they are interconnected by frames 13 similar to frames 4 but with a central vertical member 17 which engages telescopically with a central vertical member 19 of the frame 4 next below; 'the elements 9 and members 17 have pin-and-hole engagement with the uprights 1 and members 19 respectively.
Patent GB-1535637-A (GB)
Title: Process for the enzymatic hydrolysis of collagen-containing hide or leather material
IPC: C09H3/00
Filed: 1977-09-12
Abstract: 1535637 Proteolytic hydrolysis of collagencontaining materials ROHM GmbH 12 Sept 1977 [24 Sept 1976] 37968/77 Heading C3H A process for the enzymatic hydrolysis of hide or leather material, which material comprises collagen, comprises the treatment of said material with at least one protease having an optimum enzymatic activity at a pH of 9 to 13, wherein said treatment is effected in an aqueous medium at a pH of 9 to 13 in the presence of 0.01 to 1 moles of urea/litre of said aqueous medium, whereby said hide or leather material is at least partially hydrolysed. The protease is preferably present in an amount of 0À03 to 3% by weight of the hide or leather material, may be of a Bacillus, preferably B. licheniformis, B. alcalophilus, B. cereus, B. mycoides or B. subtilis, most preferably a subtilisin of group B of B. subtilis, and the process may be effected at a temperature of from 20 to 60 C. The partially hydrolysed solution may be treated at a pH of less than 9 with a protease having optimum enzymatic activity at a pH of less than 9, wherein the enzyme may be papain, the pronase complex obtained from Streptomyces griseus, the protease of Bacillus natto, B. cereus or B. mycoides, or the protease from an Aspergillus, preferably A. satoi or A. oryzae. The product may be heated to above 80 C. to deactivate the enzyme(s) followed by removal of water and spray-drying. In the examples, the collagen material is (1) glue stock from calf skins, (2) limed splits of cowhides, (3)-(5) glue stock from cowhides, (6) crome leather shavings, (7) chrome-tanned split leather, (8) lime liquor, the enzyme is an alkaline bacterial protease from (1)(5) Bacillus lichenoformis, (2)(4)(6) B. subtilis, (3) B. alcalophilus, (7) B. cerus, (8) B. mycoides; other additives are (1)-(8) ammonium sulphate, (4) neutral bacterial protease from Streptomyces griseus. Further hydrolysis is effected in (3)(5) with papain, sulphuric acid and a fungal protease of (3) Aspergillus saitoi, (5) A. oryzae.
Patent GB-821870-A (GB)
Title: Improvements in or relating to sheet metal shaping machines
Inventor: BAKER CYRIL CHARLES
IPC: B21D22/18
Filed: 1956-12-12
Abstract: 821,870. Spinning; shearing. MICKLEOVER TRANSPORT Ltd. Dec. 10, 1957 [Dec. 12, 1956], No. 38000/56. Class 83 (4). A sheet-metal shaping-machine comprising two opposed rotatably mounted rollers between which a rotating sheet is disposed is characterized in that in addition to the means for imparting rotation to the rollers and sheet, means are provided for effecting swinging movement of a mounting for the sheet about an axis transverse to the axis of rotation of the sheet and disposed away from the rollers. The machine comprises rollers 11 and 12 mounted on parallel axes inclined to the horizontal, the upper roller 11 being adjustable vertically and horizontally in known manner. The mounting for the sheet to be shaped comprises an arm 13 provided with spaced holes 14 each of which may be brought to register with holes 16 in a pair of vertical stanchions 15 and a pivot-pin 18 introduced therein. The sheet is first cut into a disc and then clamped to the end of the arm 13 which is rocked during the spinning operation about the pivot 18 by means of connecting-rods 36 attached to a nut 34 on a lead-screw 32 geared to a variable speed gear 42. In a modification the arm and stanchions are provided with slideways for accommodating two slides pivoted together with means for clamping the slides to the slideways. In another modification the arm is formed in two telescoping parts 46 and 47 (Fig. 3). The connecting-rod 36 is forked and pivoted at 51 to the part 47. A pin 48 which extends through slots 49 in the part 47 engages in cam slots 52 in the limbs 50 of the forked rod 36. Thus articular movement between the rod 36 and part 47 of the arm will cause the other part 46 to be extended or withdrawn to vary the radius of swing. The lower end of the arm part 47 is pivoted to a block 54 which engages a fixed vertical slideway 55. The block is reciprocated in the slideway by a cam 58 rotated by chain-and-sprocket transmission 60 driven from the lead-screw 32. Thus the axis of swing may be varied automatically during the swing movement to impart various shapes to the disc varying from a conical to a spherical shape. Shearing.-The sheet may be cut into circular shape by two special cutting-rollers which replace the spherical shaped rollers and the cutting is effected by imparting up-and-down movement to the upper roller which is displaced to one side of the cutting-edges of the other roller.
Patent GB-1057555-A (GB)
Title: Improvements in or relating to control apparatus for isolating cocks of pipeline couplings of rail vehicles
IPC: G05G25/00
Filed: 1963-09-26
Abstract: 1,057,555. Train pipe operating gear. J. VIELMETTER. Sept. 26, 1963 [Sept. 26, 1962], No. 38049/63. Heading B7T. A train pipe service line 7, Fig. 1, is controlled by a cock 5 which may either be manually operated by moving one of a pair of handles 15, or automatically operated when coupling takes place by movement of a lever 23, Fig. 2 (not shown), operating a Bowden cable 25 connected through a control box 21 with the cock linkage. With the coupling un-made, a handle 15 may be turned to pivot linkage 17 fixed to a shaft 19, Fig. 4, so that a pin 41 moves in a slot 37 in a latched cam element 43 pivoted on the shaft 19. During automatic coupling with the service pipe couplings already made, the cock 5 closed and the control box linkages in the position of Fig. 4, the lever 23 is pivoted by the engaging heads 3 and pushes the cable 25 which moves a stop 51, Fig. 6, against a compression spring 63 and swings a spring-controlled latch 45 to release the cam 43. The cam then pivots about the shaft 19 under the force from a spring 49 and moves to the position of Fig. 7, carrying with it the pin 41 and pivoting linkage 17 to open the cock 5. When coupling has taken place, the stop 51 moves to its extreme inward position and frees the latch 45 which returns to its holding position ready to hold the cam 43 when uncoupling takes place and a handle 15 is operated to rotate the linkage 17 and the cam back to the Fig. 4 position and close the cock. If the cock is to remain closed during coupling then the handles 15 must be locked in the cock closed position by latches 29. The head 3 may be provided with a device by means of which the head may be brought into a shunting position, and a further latch cooperating with the means and the cam 43 is provided in the control box to prevent automatic opening of the cock 5 only when the head is in the shunting position.
Patent GB-859827-A (GB)
Title: Improvements in or relating to plugs for molten metal containers
Inventor: ZAEYTYDT JEAN
IPC: F27D3/15
Filed: 1959-11-10
Abstract: 859,827. Foundry ladles. BRITISH IRON & STEEL RESEARCH ASSOCIATION. Nov. 10, 1959, No. 38060/59. Class 82(1) [Also in Group XXII] A refractory plug for closing the outlet of a tundish or other molten metal container comprises a number of refractory sleeves 2 and an end closure piece 3 into which is screwed a metal tube 4, 5. The space 7 between the tube 4 and the sleeves 2 is filled with powdered insulation material such as alumina. A further tube 8 is fitted inside the tube 4 and coolant fluid is supplied at 13 and discharged at 11.
Patent GB-950669-A (GB)
Title: Process for the liquid-phase oxidisation of olefins
IPC: C07D301/06
Filed: 1961-10-24
Abstract: Olefins containing at least 3 carbon atoms per molecule are converted to epoxides and diols by contacting with oxygen a solution thereof in an aromatic hydrocarbon or a chlorine substituted benzene, preferably mono or dichlorobenzene, said solution containing an alkali or alkaline earth metal oxide, hydroxide or carbonate as neutralising agent suspended therein, in the liquid phase and under substantially anhydrous conditions i.e. in the presence of less than 20g of water per litre of reactants. The reaction temperature of up to 300 DEG C. may be employed, the pressure being sufficient to maintain the solvent in the liquid phase, i.e. from 1 to 10 ats. A free radicle initiator may be added to the solvent; formaldehyde, acetaldehyde propionaldehyde, methyl propionate, propylene glycol diacetate acetone, sodium chromate, ammonium molybdate, lead linoleate, manganese cobalt and lead oxides are specifically listed. Alternatively the solvent after removal of suspended solids and products may be recirculated.  A list of solvents includes toluene, xylenes, naphthalene, di and terphenyls, and trichlorobenzene.  It is advantageous to limit the olefin conversion to less than 40%, preferably to 5 to 25%.  The examples which relate to the oxidation of propylene, 2-methyl -1- butene, 1-hexene, cyclohexene and styrene also show the detrimental effects on yield if no neutralising agent is used and the effect of the use of a paraffinic hydrocarbon as solvent and also the results of using gross amounts of water.
Patent GB-1113356-A (GB)
Title: Improvements in or relating to mirror supporting assemblies
Inventor: DALLAWAY JOHN ROBERT
IPC: B60R1/04
Filed: 1965-09-07
Abstract: 1,113,356. Vehicle mirrors. WILMOT BREEDEN (PLASTICS) Ltd. 6 Sept., 1966 [7 Sept., 1965], No. 38122/65. Heading B7J. [Also in Division A4] A rear view driving mirror supporting assembly comprises an integrally moulded plastics mirror backing 1 with an internallythreaded boss 3, and a zinc based die cast or moulded plastics mounting bracket 7 formed with a ball end 9 around which seats a collar 10 screw threaded at 13 for engagement with the boss 3. Thread 13 and/or boss thread 5 may be tapered. The collar is longitudinally split and made of plastics material to enable it to be snapped on to the ball 9. The ball 9 may be formed separately from bracket 7 and secured thereto by means of a spigot 15 on which a cap 16 is located. A peripheral rim 2 of backing 1 allows a mirror glass to be sprung into the backing.
Patent GB-1394361-A (GB)
Title: Manufacture of electrical coils
IPC: H02K15/04
Filed: 1971-08-13
Abstract: 1394361 Shaping coils ALUMINIUM FOILS Ltd 11 Aug 1972 [13 Aug 1971] 38124/71 Heading B3A A process for the manufacture of a shaped electrical coil comprises bending a coil to a required shape by compression between correspondingly-shaped plates of a press, the coil having been wound from metal foil and having been treated to procure the adhesion of adjacent comolutions to each other and thus forming a blocked coil. The blocked coil is wound from foil, e.g. aluminium ribbon, and coated with a thermo-setting lacquer which is then heated to produce a chemical cross-linking reaction. The bending operation is carried out by a single stroke of an hydraulic press. The shaped coil is suitable for the field coil of an electrical generator.
Patent GB-1197992-A (GB)
Title: Improvements in Sponge Rubber
IPC: C08K5/21
Filed: 1967-08-18
Abstract: 1,197,992. Sponge rubber blowing agents. WITCO CHEMICAL CO. Inc. 18 Aug., 1967 [26 Aug., 1966], No. 38196/67. Headings C3C, C3E and C3P. [Also in Divisions C4-C5] The decomposition of the blowing agent in a sponge rubber composition is controlled by adding an adduct of urea and a hydrocarbon (see Division C5). The invention is applicable to natural and synthetic rubbers and Examples (4-9) are given of compositions based on No. 1 Smoked Sheet, butadiene-styrene polymers, chloroprene polymers and ethylene-propyleneterpolymers. Comparative examples using urea per se are also given.
Patent GB-1010760-A (GB)
Title: Modified polyolefines
IPC: C08F255/00
Filed: 1964-09-18
Abstract: Polymers of a -olefins are modified by mixing them with a minor proportion of a monomeric compound containing two acrylamide groups and heating the mixture.  Suitable acrylamide modifying agents are those having the general formula:  <FORM:1010760/C3/1> in which R is an alkylene, alkylidene, phenylalkylidene, hydroxyphenylalkylidene, or alkylphenylalkylidene group.  Many are listed; those exemplified are methylene - bis - (acrlyamide), ethylidene - bis - (acrylamide), benzylidene - bis - (acrylamide), and salicylidene - bis - (acrylamide). Polymers of a -olefins exemplified are polyethylene, polypropylene, and a copolymer of ethylene and propylene; a number of others are listed.  The polymer may be in the form of flakes or moulding powder granules which are dry mixed with the modifying agent, or the modifying agent may be dissolved in a low boiling liquid and the resultant solution mixed with the polymer, preferably in flake form, and the solvent evaporated off.  No catalyst is used in the reaction.  Conventional additives such as fillers, pigments, dyes, plasticizers and resins may be added.  In some examples the stabilization is effected with mixtures of calcium stearate, dilaurylthiodipropionate and either the reaction product of 4,41-n-butylidenebis - (2 - t. - butyl - 5 - methylphenol) with diphenyliso-octyl) phosphite or the reaction product of nonyl phenol and acetone.  The modified polymer may be cast into films.ALSO:N,N1 - Ethylidene - bis - (acrylamide) is prepared by reacting vinyl acetate and acrylamide in the presence of mercuric acetate, hydroquinone and sulphuric acid.
Patent GB-853249-A (GB)
Title: Improved switching arrangement for series connected motors
Inventor: STRAND THOMAS JOHN
IPC: B63H23/24
Filed: 1957-12-09
Abstract: 853,249. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO. Ltd. Dec. 8, 1958 [Dec. 9, 1957], No. 38227/57. Class 38 (3). A control system for two-or more-series connected D.C. motors M1 M2, particularly for driving ship propellers has the armatures connected in a constant-current circuit supplied by way of terminals T1, T2, the motors being speed controlled by varying the voltage applied to the field F1, in the case of motor M1, at terminals CV1, the motor being arranged to maintain a centrifugal switch CS1 open when the motor is rotating above 2 R.P.M. Should, however, the voltage applied to the field F1 at terminals CV1 be such that the motor tends to stop rotating the centrifugal switch CS1 will close at 1 R.P.M. thereby to apply to the field F1 a fixed voltage from terminals CV1<SP>1</SP> sufficient to keep the motor M1 rotating at a low speed and thus prevent the damage to the commutator which would occur if the motor became stationary in a constant current circuit. Means are provided whereby the motor field can only be excited when current is flowing in the motor armature.
Patent GB-1399728-A (GB)
Title: Method of conditioning fabrics
IPC: D06M23/00
Filed: 1972-08-17
Abstract: 1399728 Packages ECONOMICS LABORATORY Inc 17 Aug 1972 [17 March 1972] 38388/72 Heading B8C [Also in Division D1] A heat-activated dispenser containing a fabric conditioning agent in heat-softenable, solid, reuseable form has at least one surface permeable surface so that the conditioner can penetrate therethrough when heated and has means for attaching the dispenser to a drum of a machine dryer. The dispenser can be attached by a woven loop and hook fastener in a domestic drum drier. The dispenser can be a bag made of a cotton/polyester twill, or a plastics clip holding the conditioner. The conditioner may be dimethyl di(hydrogenated tallow) ammonium chloride with or without stearyl dimethyl benzyl ammonium chloride and the methanolamide of coconut oil fatty acid. The conditioner may soften and impart antistatic properties to the fabric.
Patent GB-1398680-A (GB)
Title: Production of bromostyrene dibromostyrene and alkyl bromides
IPC: C07C17/25
Filed: 1973-08-15
Abstract: 1398680 Bromostyrene, dibromostyrene and alkyl bromides YEDA RESEARCH & DEVELOPMENT CO Ltd 15 Aug 1973 38505/73 Heading C2C Bromo- or dibromo-styrene and an alkyl bromide are prepared simultaneously by reacting bromoethyl bromobenzene or bromoethyl dibromobenzene with a C 1  to C 4  alkanol at an elevated temperature in the gaseous phase. The reaction is preferably carried out in the presence of a source of free radicals and the reactants are preferably mixed with a carrier gas.