baber/WOPTO huggingface dataset:
Patent GB-1048191-A (GB)
Title: Process for producing formaldehyde polymers
IPC: C08G2/08
Filed: 1964-03-26
Abstract: A linear paraformaldehyde of not more than 100 HCHO units is made by a process which comprises evaporating the H2O from an aqueous solution of formaldehyde within less than 15 minutes at a pressure of not above 400 mm. Hg and temperature from 40 DEG  to 80 DEG  C. in a thin film evaporator, continuously removing formaldehyde polymer from the evaporator within two minutes of its formation and cooling the polymer at a rate so as to obtain the desired degree of not more than 100 HCHO units of polymerization.  The example describes the operation of the process giving a polymer of average 15 units.
Patent GB-1255063-A (GB)
Title: Apparatus for etching printing plates
Inventor: GRAICHEN WERNER
IPC: G03F7/30
Filed: 1969-03-12
Abstract: 1,255,063. Etching. INSTITUT FUR GRAFISCHE TECHNIK. 12 March, 1969, No. 13024/69. Heading B6J. An apparatus for etching printing plates 5 comprises a rotatable cylinder 1 arranged to support the plates with their surfaces to be etched facing inwards and includes a brush 10 to brush the etchant over the surface of the plate and a doctor 20 to remove the etchant from the said surface. Brush 10 and doctor 20 are movable between operative and inoperative positions. The brush 10 may be axially reciprocated. Etchant may be removed through a drain slot 17, normally covered by closure strip 16 carried on arm 15. In an alternative embodiment (Fig. 3, not shown), the cylinder 1 is oscillated instead of being rotated.
Patent GB-473156-A (GB)
Title: Improvements in light mortars
IPC: F41F1/06
Filed: 1936-05-08
Abstract: 473,156. Trench mortars. TAMPEREEN, PELLAVA-JA RAUTATEOLLISUUS OSAKE-YHTIO, and DONNER, H. O. May 8, 1936, No. 13054. [Class 92 (ii)] Trench mortars using a constant charge and fired at a fixed elevation of 45‹ have their range varied by adjusting the starting point of the projectile, one or more gas escape openings o<1>, o<2>, o<3> being arranged forward of the initial position of adjustment P<1> of the projectile. The effect of the openings on the range adjustment increases the more the projectile is adjusted towards the extreme forward position P<2>. In the form shown, the projectile is adjusted in the barrel by turning a screwed percussion pin c by means of bevel gearing rotated by a handle v.
Patent GB-696811-A (GB)
Title: Improvements relating to electric circuit arrangements embodying electron discharge valves
Inventor: JAMES IVANHOE JOHN PENFOUND
IPC: H03F1/36
Filed: 1949-05-17
Abstract: 696,811. Valve amplifying circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd. May 17, 1950 [May 17, 1949], No. 13071/49. Addition to 586,137. Class 40(vi). A high impedance signal source is coupled to an impedance reducing circuit and the signals derived therefrom and applied to a shaping circuit of the type described in the parent Specification to correct the distortion of the signals caused by the high impedance of the signal source. The Figure shows a wide band amplifier for signals produced in a television pick-up tube 1, the output plate 2 of which feeds into the input circuit of a head amplifier comprising valve 4 and further stages 9, the input having associated with it stray capacity 6 which attenuates the H.F. end of the signal frequency band. The resistor 5 forms in effect a high impedance source and the output from the head amplifier is applied to the input of a cathode follower impedance reducing stage 15 of which the cathode is connected via load resistor 18 to a negative line 91 at a potential of say 300 volts. The output from resistor 18 is fed via parallel connected resistor 23 and capacitor 22 to a D.C. coupled wide-band amplifier comprising stages 25, 36, 50 and cathodefollower stage 69. The frequency response between the input to valve 25 and the output of valve 69 is maintained substantially flat by filter couplings similar to network 29, 92 in the anode circuits of valves 25, 36 and 50. The output voltage across resistor 72 is applied to a cathode-follower output stage 80 to produce an output signal at terminal 87. Negative feed-back is applied from resistor 72 via coaxial cable 89 to the screened resistor 88 in the grid circuit of valve 25, so that the input impedance of valve 25 is relatively low and the input current is determined mainly by the voltage from the low impedance source of resistor 18 and the network 22, 23. It is shown that under these conditions although H.F. signals are attenuated by stray capacity 6 this is substantially compensated for by the negative feedback via resistor 88 in conjunction with network 22, 23. Resistors 61, 77 may be adjusted to vary the gain of the D.C. coupled amplifier and thus adjust the frequency above which H.F. boost takes place. A small capacity may be connected across resistor 88 to counteract undesirable phase-shift in the amplifier and the valves 25, 36, 50 and 69 may be secondary emissive electron multipliers. Specifications 576,277 and 630,132 also are referred to.
Patent GB-132216-A (GB)
IPC: H02G15/013
Abstract: 132,216. Siemens Bros. & Co., and Wood, H. G. May 26, 1919. Junction and test boxes; plug couplings and connectors; couplings.-A junction-box arrangement is provided with separate sealing-troughs or chambers for feeders and bus-bars, disposed transversely and having connector sockets so arranged that they may be interconnected as desired by readily removable connectors or jumpers. A separate sealing- trough a is provided for each set of associated single-core cables or for each multiple-core cable, and each trough has one or more connector sockets g for each core; these troughs are arranged parallel to each other. A separate trough b is provided for each busbar and fitted with a connector socket for each set of cores; these troughs are arranged above, and transversely to, those for the feeders. Jumpers consisting of pairs of plugs e united by slightly flexible conductors e<1> are provided to make the interconnexions. The jumpers may act as fuses. The bus-bar sections b may be adapted for extension by the addition of extra sections to their ends, so that further cables may be added. The sockets and plugs shown are four-sided with a spring contact-piece at each side, and may be made watertight by a union joint f<1> or water seal g<1> as shown in Figs. 4 and 5 respectively. Suitable covers are provided for sockets not in use.
Patent GB-132245-A (GB)
IPC: C07B39/00
Abstract: 132,245. Chemische Fabrik Flora. Aug. 31, 1918, [Convention date]. Bromo and chloro compounds are prepared by treating aliphatic amines, especially aminocarboxylic acids or their salts, with a mixture of hydrobromine or hydrochloric acid and nitric acid. Mixtures of bromides or chlorides with nitric acid, or of hydrobromic or hydrochloric and with a nitrate may also be used. The amino group is thus replaced by the halogen. Examples are given of the preparation of alpha-chlor- or alpha-bromisobutylacetic acid from leucine, and of chlor- or brom-succinic acid from aspartic acid; alanine is also specified as a parent substance.
Patent GB-132514-A (GB)
IPC: A22C17/14
Abstract: 132,514. Marland, B. April 8, 1916, [Convention date]. Intestines, treating.-Animal intestines for sausage casings are salted by drawing them through 'a salt bath while maintaining the casings separate from each other. The intestines 40 are brought to the working table in pans 5 having pegs 7, over each of which one intestine is looped. The intestine is then measured and looped over pegs 16 on a removable comb 15, which comb may be transferred to the other side of a pan 19 which has a perforated bottom through which fluid matter may escape. The loop is then drawn through salt 24 and passed over a hook on a conical drum 27 which is rotated to draw the intestine through the salt and wind it on the drum. The salted intestine is removed from the drum and skeined for transport or storage.
Patent GB-133016-A (GB)
IPC: B65C11/04
Abstract: 133,016. Multipost Co., (Assignees of Schweiger, W. F.). Sept. 26, 1918, [Convention date]. Damping-machines.-The operations of feeding a stamp, severing it from the strip, moistening the surface to be stamped, applying the stamp, and printing upon it, are performed as a result of a plunger 4 being pressed down, the moistening-device being actuated through the medium of the inking-device. The pivoted ink reservoir 40 is moved by a roller 47 carried by the plunger. When it tilts, a projection 75 engages an arm 72 of a lever 70 pivoted at 73 to the upper end of a bolt 64 which enters a water chamber 52. The bolt thereupon rises against the pressure of a spring 68 and moves a lever 56 about a pivot. Later in the stroke of the plunger, a projection on the reservoir 40 moves away from the arm 72, the bolt springs back, and the rubber facings a on the end of the lever 56 force liquid in the form of a spray through minute holes 54 on to the surface to be stamped.
Patent GB-821738-A (GB)
Title: Improvements in and relating to reciprocating pumps
IPC: F04B9/105
Filed: 1957-04-26
Abstract: 821,738. Reciprocating pumps. WILLETT & CO. Ltd., T., WAKEFIELD, F. R., TURNER, C. H., and WALTON, F. E. April 15, 1958 [April 26, 1957], No. 13320/57. Addition to 677,136. Drawings to Specification. Class 102(1). A modification of the pump disclosed in the parent Specification in which the pump cylinder and actuating ram are disposed in a horizontal plane. The Specification states that the pump may be double acting.
Patent GB-724734-A (GB)
Title: Improvements in cooling arrangements for internal shoe drum brakes for vehicle wheels
IPC: F16D65/827
Filed: 1953-05-13
Abstract: 724,734. Filtering gases. COMPAGNIE DE PONT-A-MOUSSON. May 13, 1953 [May 20, 1952], No. 13343/53. Class 8 (2). [Also in Group XXXIV] In a cooling air collector for an internal shoe-drum brake, the collector 29 is triangular shaped and is welded to the forward end of the brake back plate 16 which is provided with an opening 27 for cooling the working parts of the brake. At least one ball 31 of metal or other heavy material, covered with rubber 32 or other resilient material is disposed in the front part of the collector so that its diameter is greater than the width of the free space provided on either side of the rod 30, which is welded to the collector 29, Fig. 5, so that the ball cannot reach the opening 27. The' bouncing ball keeps the grill, composed of longitudinally extending member 33 of metal wire or rubber, free from mud and dirt.
Patent GB-750741-A (GB)
Title: Improvements in and relating to garages
IPC: E04H6/10
Filed: 1954-05-07
Abstract: 750,741. Garages; warehouses; fortifications. MAISSEN, V. May 7, 1954 [May 11, 1953 ; March 19, 1954], No. 13385/54: Class 20(1). A garage comprises a shell, e.g. of reinforced concrete, including a cylindrical outer wall 1, a plane floor and a flat continuous ceiling joined respectively to the base and top edge of the wall 1, and a plurality of spaced partitions 3, extending radially inwardly from the wall, joined to the wall 1, ceiling and floor and terminating a fixed distance from the wall to define an internal manoeuvring area 5, at least one opening 6 communicating with the area 5 from the exterior of the shell. The garage, which may be underground, may have several storeys with partitions 3, adjacent storeys being interconnected by an external ramp 7. The shell may comprise several concentric walls, e.g. three, partitions extending from each wall into each of the two annular inter-wall areas so formed, which are the manoeuvring areas. There is an opening in each wall, the innermost wall enclosing a workshop. The building may be used as an air raid shelter or as a warehouse.
Patent GB-922827-A (GB)
Title: New phthalocyanine dyestuffs and their manufacture and use
IPC: C09B62/10
Filed: 1959-04-20
Abstract: The invention comprises tetraphenylphthalocyanine dyestuffs of the formula <FORM:0922827/IV(a)/1> in which Q is a tetraphenylphthalocyanine residue, R is alkylene or arylene, Z is a substituted or unsubstituted mercapto or amino group and n is 1 or 2, and in which the residues Q, R and Z together contain at least two sulphonic acid groups.  The dyes are made by condensing a phthalocyanine dyestuff of the formula Q-[-SO2-NH-R-NH2]n in which Q, R and n are as above, with a triazine of the formula <FORM:0922827/IV(a)/2> in which Z is as above, or with a trihalogen triazine and then replacing one of the two remaining halogen atoms by a substituted or unsubstituted mercapto or amino group; or by condensing a tetraphenylphthalocyanine sulphonic acid halide with a triazine of the formula <FORM:0922827/IV(a)/3> in which R and Z are as above and either choosing the starting materials so that the product contains at least two sulphonic acid groups, or reacting only one sulphonic acid halide group of a polysulphonic acid halide and hydrolysing the remaining acid halide groups to sulphonic acid groups.  Examples are given.  The dyes dye and print fibres of polyvinyl alcohol or of natural or regenerated cellulose in conjunction with a treatment with alkali in green shades.
Patent GB-910622-A (GB)
Title: Improved gramophone records
Inventor: GOULD REX WILLIAM
IPC: C08J7/044
Filed: 1960-04-14
Abstract: Gramophone records moulded from a material comprising a vinyl chloride polymer are coated with at least one quaternary pyridinium salt in which the substituent on the nitrogen atom is an organic group consisting essentially of carbon and hydrogen atoms and containing at least 7 carbon atoms and in which the hydrogen atoms attached to the carbon atoms of the pyridine ring may or may not be substituted by alkyl groups.  The pyridinium salt may be applied to the surface of the record as a solution or dispersion by spraying, brushing or wiping.  The polymer may be polyvinyl chloride or a copolymer of vinyl chloride with vinyl acetate or vinylidene chloride.  The pyridinium salt may be decyl, undecyl, cetyl, octadecyloxymethylene or stearamido-methyl methyl pyridinium chloride; dodecyl, cetyl, octadecyl or tetradecyl pyridinium bromide; cetyl pyridinium iodide; dodecyl pyridinium sulphate or tetradecyl picolinium salts.  In Example 3 a record moulded from a vinyl chloride-vinyl acetate copolymer is sprayed with an aqueous solution of tetradecyl pyridinium bromide. Reference is made in the Provisional Specification to other polymers, e.g. polymethylene terephthalate and polyesteramides, and other articles, e.g. conveyer belts.ALSO:Gramophone records are moulded from compositions comprising a vinyl chloride polymer and at least one quaternary pyridinium salt in which the substituent on the nitrogen atom is an organic group consisting essentially of carbon and hydrogen atoms and containing at least 7 carbon atoms and in which the hydrogen atoms attached to the carbon atoms of the pyridine ring may or may not be substituted by alkyl groups.  The polymer may be polyvinyl chloride or a copolymer of vinyl chloride with vinyl acetate or vinylidene chloride.  The quaternary pyridinium salt may be decyl, undecyl, cetyl, octadecyloxymethylene or stearamido methyl pyridinium chloride; dodecyl, cetyl, octadecyl or tetradecyl pyridinium bromide; cetyl pyridinium iodide; dodecyl pyridinium sulphate or tetradecyl picolinium salts.  The compositions may also comprise stabilizers, e.g. barium/cadmium laurate and dibasic lead stearate, and fillers, e.g. carbon black.  Reference is made in the Provisional Specification to other polymers, such as polymethylene terephthalate and polyesteramides, and other articles, such as conveyer belts.
Patent GB-704534-A (GB)
Title: Improvements in and relating to the banding of shoe laces and the like
IPC: B65D75/02
Filed: 1950-05-30
Abstract: 704,534. Packaging shoe laces &c. ALBERTON & LEYTON, Ltd., and HELD, P. E. May 30,1951 [May 30, 1950; July 21, 1950], Nos. 13472/50 and 18275/50. Class 94 (1) Shoe laces and the like are packaged in pairs by folding or winding the laces into flat coils disposed side-by-side, applying a strip of deformable material;' such as metal foil, which is sufficiently rigid to retain its shappe after deformation and shaping the strip to provide a substantially rectangular enclosure for the laces. In .one form, Fig. 1, a strip of aluminium :foil 10 ,is folded along parallel lines 10a-d to form a rectangular enclosure consisting of five panels with two overlapping: The strip may be embossed with ridges 10e around the edge of each panel, adjacent ridges defining the folding lines. In a second form, the strip is embossed to define six panels and folded around the laces so that four of the panels are disposed adjacent the sides of the coils with the remaining two extending in overlapping relationship so that they may be secured together and folded flat. In Fig. 4 the panels are secured together by stapling or rivetting in the area 14, crimping along the line 13 or cold-welding along the line 15. In Fig. 5 a tongue 12f is formed in one panel and inserted through an opening in the other in Fig. 6 two parallel slits 12g and 12h are formed in the two panels and the material between the slits is depressed and expanded; and in Figs. 7-9 (not shown) the panels are secured together by folding over portions of one or both panels.
Patent GB-1033215-A (GB)
Title: Process for the manufacture of linear polyamides
IPC: C08G69/22
Filed: 1963-04-04
Abstract: A process for the manufacture of high molecular weight linear polyamides comprises polymerizing by anionic polymerization a b -lactam which is unsubstituted at the nitrogen atom, is substituted in the a -position to the carbonyl group by two alkyl groups having a total of at most 4 carbon atoms and is unsubstituted in the b -position to the carbonyl group or is substituted in this position by one alkyl group containing at most 3 carbon atoms or by one phenyl group, in the presence of a compound capable of converting the b -lactam into a lactamate. Specified lactams are a  : a -dimethyl - b - propiolactam, a  : a  - dimethyl - g  - methyl - b  - valerolactam and a  : a  - dimethyl - b  - phenyl - b  - propiolactam.  Copolymers may be made by including in the reaction mixture a b -lactam unsubstituted at the nitrogen atom and having at least one hydrogen atom in the a -position to the carbonyl group, e.g. b -methyl-b -butyrolactam or 4-phenyl - b  - propiolactam. Specified initiators are the conventional alkali and alkaline earth metal compounds. Accelerators may also be present in the reaction mixtures.
Patent GB-1404593-A (GB)
Title: Stripping of brussels sprouts from their stems
IPC: A23N15/01
Filed: 1972-03-23
Abstract: 1404593 Stripping brussels sprouts PRODUITS FINDUS SA 11 June 1973 [23 March 1972] 13522/72 Heading A4C [Also in Division B8]  A device for stripping Brussel sprouts from their stems, comprises a movable member, such as an endless band or a rotatable drum 12, having a soft resilient surface 17, a series of spaced arcuate pressure members 19 each having a soft resilient surface 21 and being individually urged towards the surface of the drum 12 by compression springs 37 to form a resilient nip, and a series of resilient stripping rollers 49 spaced apart and located between each pair of adjacent pressure members. The pressure members 19 are flared outwardly away from the drum to form a mouth 57 for guiding the plants towards the nip, the said members 19 being pivotally attached at 31-33 to supporting studs 34 which pass through lateral slots in stays 23 secured to a pair of arcuate frames 28. The frames 28 are articulated on common shafts 29 and mounted on a supporting framework 11, compression springs 43 yieldably urging the said frames towards the drum 12 at the pivot point and tension springs 46 doing likewise at the free ends of the frames. The stripping rollers 49 are rotatably mounted in the frames 28 on carrier shafts 48, which are driven in two groups from a variable speed motor 52 by chain and sprocket gearing 53, the shafts of each group being inter-connected by individual chain and sprocket gearing (56), Fig.3 (not shown), and the rollers 49 rotating in the opposite sense to the drum 12. The group of stripping rollers 49 which engages the sprouts first may be driven at a slower speed than the rollers of the lower group. A hopper 58 opens on to the surface of the drum 12 and has a wall portion 59 pivotally mounted on the framework 11 and yieldably urged towards said hopper by springs 61. The drum covering 17 is formed of rubber with lateral grooves 18, the pressure members 19 having a like covering 21 with grooves 22, and the stripping rollers 49 are of similar material. Alternatively, the said covering material may comprise inflatable bags or tubes.
Patent GB-1363374-A (GB)
Title: Reactive dyestuffs
IPC: C09B62/00
Filed: 1972-03-23
Abstract: 1363374 Amides BAYER AG 23 March 1972  [24 March 1971] 13661/72 Heading C2C [Also in Division C4] N- (3 - Amino - 4 - methylphenyl) - N<SP>1</SP> - (2 - amino-ethyl)-urea is prepared by reacting 2-nitro-4- aminotoluene with chloroformic acid phenyl ester to give the urethane which is further reacted with ethylene-diamine to yield N-(3-nitro- 4 - methylphenyl) - N<SP>1</SP> - (2 - aminoethyl) - urea which is reduced. N - (4 - Aminophenyl) - N<SP>1</SP> - (2 - aminoethyl). urea is prepared by condensing 4-nitrophenylisocyanate with ethylene-diamine to give N-(4- nitrophenyl) - N<SP>1</SP> - (2 - aminoethyl) - urea which is reduced. N - (3 - Amino - 4 - sulphophenyl - N<SP>1</SP> - methyl- N - (2 - methylamino - ethyl) - urea is prepared by condensing 1,3-diamino-benzene-4-sulphonic acid with phenyl chloroformate and further reacting the resultant urethane with N,N<SP>1</SP>- dimethyl - ethylenediamine, 2 - phenoxycarbonylamino - 5 - hydroxynaphthalene - 7- sulphonic acid (Na salt) is prepared by condensing 2 - amino - 5 - naphthol - 7 - sulphonic acid (Na salt) with phenyl chloroformate.
Patent GB-889335-A (GB)
Title: Process for the production of dyestuffs and dyestuff intermediates of the quinone series
Filed: 1959-04-22
Abstract: Dyestuffs and dyestuff intermediates are made by reacting an anthraquinone-acridone, an anthrapyridone or a non-anthraquinonic quinone containing 6-10 fused carbocyclic rings in which the ketonic group or groups are present in the fused ring system, with at least one molecular equivalent of an alkali-metal cyanide per quinone ketone group, the reaction being carried out in an inert solvent at a temperature within the range of 60 DEG C.-250 DEG C., the addition products, which are leuco alkali-metal salts, are oxidised to cyano derivatives of the initial compounds and the cyano derivatives, if desired, are hydrolysed to the corresponding carboxylic acid amides or carboxylic acids. Starting materials containing 6-10 fused carbocyclic rings are dibenzpyrenequinone, isodibenzpyrenequinone, anthanthrone, pyranthrone, violanthrone, isoviolanthrone and substitution products thereof.