baber/WOPTO huggingface dataset:
Patent GB-634172-A (GB)
Title: Polyamide condensation polymers
IPC: C08G69/08
Filed: 1946-11-21
Abstract: Polyamide condensation polymers useful for preparing fibres, mouldings, adhesive or coating compositions are prepared by heating an amino acid or mixture of amino acids having more than four atoms between the amino and carboxyl groups, or an amide-forming ester, amide or lactam thereof with benzene hexacarboxylic acid; 1,1,2,3,4,5-hexa-(b -carboxyethyl) - cyclopentadiene or 3,3,5,5,31,31,51, 51-octa-(b -carboxyethyl)-4,41-diketodicyclohexyl, or with an amide-forming ester, nitrile, acid chloride or anhydride of one of those polybasic acids.  Amino acids or equivalents mentioned are 6-aminocaproic acid, 10-aminodecanoic acid, 9-aminostearic acid, 12-aminostearic acid, 13-aminobehenic acid, 9-amino-margar acid, 14-aminobehenic acid, 9-aminopalmitic acid, 13-aminostearic acid, p-(2-aminoethyl)-benzoic acid and epsilon-methyl-epsilon caprolactam.  The length of the polyamide side chains which extend from the polybasic acid residue depends on the relative number of mols. of polybasic acid and amino acid in the reaction mixture.  Generally 100-5000 mols. of amino acid are used for each mol. of polybasic acid.  Reaction is usually performed with a molten reaction mixture.  Diluents may be added. The temperature may be higher at the end of the condensation than at the beginning. Oxygen should be excluded, e.g. by a stream of inert gas which also removes reaction by-products.  The course of the reaction is followed by the viscosity of the product.  Reduced pressure may be employed during the reaction. When using a lactam or a polynitrile or a polyester, the reactants may be given a preliminary heating in a closed system if desired with addition of water.  Solvent plasticizers for the polyamides may be added to the reaction mixture, e.g. p-hydroxydiphenyl, xylenol or o-hydroxy-diphenyl.  The polymers may be melt spun, or dry or wet spun from solutions in an alcohol, phenol, glycol, chlorhydrin or formic or sulphuric acid.  They may also be rolled into sheets, or cast or moulded.  They may be cold-drawn.  In the examples (1), (2) and (3), polymers were prepared from epsilon-caprolactam and 3,3,5,5,31,31,51,51-octa-(b -carboxy-ethyl) -4,41-diketodicyclodihexyl.  In example (4), 2 - methyl - 7 - ketohexamethyleneimine (epsilon-methyl-epsilon caprolactam) was reacted with the same acid.  In example (5), 10-aminodecanoic acid was the amino acid used.  U.S.A. Specifications 2,071,250 and 2,071,251 are referred to.ALSO:Cyclopentadiene is condensed with acrylonitrile and the product hydrolysed to yield 1,1.2,3,4,5-hexa-(b -carboxyethyl) cyclopentadiene. 3,3,5,5,31,31,51,51-octa-(b -carboxyethyl) -4,41-diketodicyclohexyl is prepared by hydrogenating p,p1 - dihydroxydiphenyl, dehydrogenating the product to form the corresponding diketone, reacting that with eight molecular equivalents of acrylonitrile and hydrolysing the product to the acid.
Patent GB-211635-A (GB)
Title: Automatic means for adjusting lift cages to correct landing level
IPC: B66B1/42
Filed: 1922-12-19
Abstract: 211,635. Bone, D., Huggett, W. J., and Express Lift Co., Ltd. Dec. 19, 1922. Electric plant.-Means are provided in the head of a lift for automatically varying the length of the connection between the lifting cables and lift to bring the floor of the lift into alignment with the landing if the lift has come to rest under the action of the usual controlling means with the floors out of alignment. A motor 8 drives through worm gearing a screw 4 which passes through a threaded block 3 to which the rope pulley 2 is attached. The motor is controlled automatically by means arranged in the well, e.g. by star wheels fixed to the axes of discriminating gears which are actuated by projections on the cage, there being a separate, projection for each wheel.
Patent GB-1495926-A (GB)
Title: Cephalosporin analogues
IPC: C07D501/22
Filed: 1974-07-09
Abstract: 1495926 3 - Benzyl - 7# - [D - α - amino - phydroxyphenylacetamido]ceph- 3 - em - 4 - carboxylic acid BEECHAM GROUP Ltd 9 July 1974 [21 July 1973] 34871/73 Heading C2C The invention comprises compounds (I) and its pharmaceutically acceptable salts and pharmaceutically acceptable bioprecurors therefor, i.e. a compound having a structural formula different therefrom but which is converted thereto in the patients body, after administration and its preparation by reacting a 3- benzyl - 7 - # - amino - ceph - 3 - em - 4 - carboxylic acid or its salt, ester or silyl derivative with an activated N-acylating derivative of the (D)-form of the acid (IV), where A is a free or blocked hydroxy group and B is a blocked amino group and thereafter converting B to an amino group and, if necessary, converting A to a hydroxy group and, if necessary removing a remaining silyl group by hydrolysis or alcoholysis. Bioprecursors described in the Specification include acyloxy alkyl, lactone, thiolactone and dithiolactone esters and the acetone adduct of the compound (I).
Patent GB-1503929-A (GB)
Title: Process for electrostatic direct transfer printing of designs of fabrics
IPC: G03G15/16
Filed: 1975-08-22
Abstract: 1503929 Electrostatic printing process KANEBO Ltd 22 Aug 1975 [26 Aug 1974] 34911/75 Heading D1B [Also in Division B6] The invention comprises a process for electrostatically printing a design on a fabric by forming an electrostatic latent image on a photoconductive material or an insulating dielectric material, developing the latent image with a toner comprising at least one electrically chargeable resin and at least one colourant, electrostatically transferring the developed toner image directly to a fabric having a surface inherent resistivity as measured at 20C at at a relative humidity of 65%, of 1 x 10<SP>6</SP> to 1 x 10<SP>14</SP> ohms and fixing the toner image to the fabric. The fabric may be woven, knitted or non-woven and consist of cotton, wool, silk, viscose, cellulose acetate, polyester, polyamide or polyacrylonitrile. The resin may be a homopolymer of ethylene, propylene, styrene. aminostyrene, an ester of methacrylic acid, vinyl chloride and vinyl acetate, also copolymers thereof. Disperse, acid, direct, basic and reactive dyes may be used as colourant, also carbon black and aniline black. The fabric may be treated with water soluble polymers eg. carboxymethyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylamide or polyethylene oxide.
Patent GB-617608-A (GB)
Title: Improvements in or relating to a sheet transfer mechanism for printing presses and similar machines
IPC: B41F21/08
Filed: 1945-12-27
Abstract: 617,608. Printing machines. HARRISSEYBOLD CO. Dec. 27, 1945, No. 34935. Convention date, Sept. 4, 1941. Drawings to Specification. [Class 100(ii)] The present Specification describes a machine which is substantially identical with that described in Specification 606,285 which is based on the same U.S.A. Specification. The claims in the present Specification are different and are directed mainly to a sheet transfer cylinder for printing &c. machines having a plurality of sheet gripper units, each comprising a plurality of grippers spaced lengthwise of the unit, said mechanism comprising a rotating member, means for presenting said gripper units to and removing them from said rotating member in succession, and means for accurately registering each of said gripper units with said member during a portion of a revolution thereof, said registering means including means engaging each of said units at a plurality of points along its length, including at least one point between the endmost grippers. Specifications 527,280, 604,232 and 604,264 are referred to.
Patent GB-410433-A (GB)
Title: Improvements in or relating to street box apparatus for fire-alarm systems
IPC: G08B25/12
Filed: 1933-12-12
Abstract: 410,433. Man traps. BOHN, H., 7, Zeppelinstrasse, Heilbronn-on-Neckar, Wurtemberg, Germany. Dec. 12, 1933, No. 34964. Convention date, Dec. 13, 1932. [Class 5 (i).] ln a street box apparatus for fire alarm systems, a device is provided which automatically detains the person who operates the alarm. As shown, a heavy shackle 6 is mounted for vertical movement in a frame 4 and is normally maintained in a raised position by the engagement of spring-pressed balls 11, 13 with holes, e.g. 9, in the frame. The alarm is transmitted by operation of the press-button 35 and in order to operate it, the hand, which is inserted through an opening 2, firstly encounters a pivoted plate 16 which has arms 17 adapted to depress the shackle on to the operator's wrist so as to prevent withdrawal of the hand. The shackle is locked in its depressed position by a pawl 27 which engages a notch in a member 20 pivoted at one end to the shackle and connected at the other end through linkwork to the plate 16. The pawl 27 is operated by a member 29 which engages an arm 34 on the plate 16. A guard 37 is provided to prevent operation of the switch 35 by unauthorized implements. A roller provided in an incline 39 is adapted to further prevent withdrawal if the hand is pulled. A push button 40 is operated by the shackle when unobstructed by the hand in order to give an alarm and operate a lamp mounted in the street box. The pawl 27 and shackle 6 are reset by strings 44, 45 which are accessible through a locked lid 48.
Patent GB-350546-A (GB)
Abstract: 350,546. Bakers' ovens. SOUTH METROPOLITAN GAS CO. and CHANDLER, D., 709, Old Kent Road, London. March 13, 1930, No. 8188. [Class 51 (ii).] A baker's oven comprises a heat-storing element I of cellular or grid form, which is heated by the combustion of gas prior to the insertion of the goods to be baked, and the capacity of which is such that the baking can be effected entirely by the stored heat. In the construction shown the grid is formed by cast-iron bars 2 supported in longitudinal channels 3, and spaced from one another and from the roof of the oven. The products of combustion from burners inserted through the front wall of the oven pass through the grid and side wall flues 10, and through apertures in the metal floor, to flues 16 in communication with the stack. When the grid has been sufficiently heated the burners are withdrawn, the burner apertures 20 are plugged, and the flue damper is closed before the bread is inserted. The roof of the oven consists of tiles 6 carried by supports 7 suspended from transverse channel chambers 9.
Patent GB-363482-A (GB)
Title: Improvements in and relating to can-soldering machines
IPC: B23K1/14
Filed: 1930-11-21
Abstract: 363,482. Soldering cans. LUXTON, W. J. and GREEN, W. A., 198, Westminster Bridge Road, London. Nov. 21, 1930, No. 35099. [Class 83 (iv).] The solder slot of a can-soldering machine consists of a surface over which cans may slide perforated with a number of openings through which solder is supplied and provided at intervals with depressions. Straight-edge end seams can thus be soldered and longitudinal seams can be soldered from top to bottom. The solder slideway consists of a rectangular bar 1 clamped between a pair of angleirons 2 mounted on the bed of a trough T, which has side wings 6 and overflow and return conduits to the reservoir R. The bar is provided with groups of vertical or inclined holes 5 through which solder is supplied from the reservoir via the trough 4. The unperforated sections of the bar are recessed at 7, with a ramp surface 8 and a vertical surface 9, so that the bead of a can sliding along the bar drops into the recess and gradually slides up the ramp. The solder flows from hole to hole and overflows at each recess. The delivery end of the bar is also unperforated to provide an ironing action on the seam, and a rotary cotton or other wiping- wheel may be provided. The top surface of the bar may also be convex, concave, V or other section. The cans may be supported on the bar by adjustable frames. The fluxing wheel 11 may be provided with a renewable sponge-rubber tyre 12 passing through a slot in an angle runway 13. Specifications 195,129, 215,233, and 260,100, [all in Class 83 (iv), Metals, Working], are referred to.
Patent GB-999476-A (GB)
Title: Improvements in or relating to electric frequency measuring devices
IPC: G01R23/02
Filed: 1961-09-29
Abstract: 999,476. Frequency measuring. P. GOSSEN & CO. G.m.b.H. Sept. 29, 1961 {Jan. 27, 1961], No. 35152/61. Heading H3A. A capacitor 1 is charged through a rectifier 4 during each first half-cycle of voltage U having a frequency f and discharged during the second half-cycle through a rectifier 2 and one winding of a bifilar-wound moving-coil measuring-mechanism 3, the p.d. across A, B being stabilized by Zener diodes 7, 8 connected in opposition to one another to nullify the effects of temperature changes. During each second half-cycle of voltage U a current J R  flows in the other winding of mechanism 3 and a rectifier 10, the resultant of current JR and the discharge current J c  of capacitor 1 providing an. indication of frequency f. A resistor 11 estab lished an artificial zero on the scale of mech anism 3 (Fig. 2, not shown), whereas a resistor 12 causes corresponding variations in currents J C , J R  with changes in voltage U. A resistor 9 has a value such that the p.d. across points A, B is substantially constant. Discharge pulses of capacitor 1 are attenuated by a capacitor 5 and the sensitivity of mechanism 3 is determined by a resistor 6. Alternatively, the device comprises a measuring-mechanism 3 (Fig. 4) having a single winding and resistors 13, 14 in series with diode rectifiers 2, 4, respectively, the threshold voltages of said rectifiers and the resistance of said resistors being such that no current passes through rectifier 2 whilst capacitor 1 is charging. Fig. 4 may include a diode and a resistor connected in series across <SP>"</SP> capacitor 1 to prevent flow of current in rectifier 2 whilst capacitor 1 is charging, resistor 14 being omitted. Fig. 6 (not shown) differs from Fig. 4 in that a further pair of Zener diodes are connected in parallel with diodes 7, 8 to improve stabilization of the p.d. across capacitor 1, and rectifier 10 is replaced by an inductor which forms with capacitor 1 a parallel-resonant circuit. The frequency difference between two voltages (Fig. 8, not shown) may be measured.
Patent GB-191380-A (GB)
Title: A device for sharpening and honing cutting tools
IPC: B24B3/54
Filed: 1922-12-28
Abstract: 191,380. Beck, H. Jan. 7, 1922, [Convention date]. V-slot and like blade sharpeners; tools; cutting-edges, shaping and treating.- Comprises a holder having at one end two opposed large non-rotary sharpening-balls 1, 2 of abrading-material, for example, carborundum, emery, oilstone, &c., and at the other end two small rotary honing-balls 3, 4 of steel, &c. The holder comprises two members 5, 6 secured to a distance-piece d<1> by rivets 7, 8. The ends of the members 5, 6 are formed with cup-shaped bearings to receive the balls; in order to permit the small balls to rotate during sharpening, the bearings are provided with projections or balls against which the balls rest. The large balls may be turned by hand to present fresh grinding- surfaces. Cork pieces 12, which prevent damage to the blade are placed between the members 5, 6 and carry rivets 11 slidable in slots in the members 5, 6 to regulate the pressure between the balls. In a modification, Fig. 5, the pairs of balls are carried by screwed sleeves 13 and are pressed together by springs m; the balls may be carried by springy clamping-members which screw into a central member. The sharpening and honing balls may be mounted as shown in Fig. 11, respectively on discs 23, 24 and discs 25, 26, the discs 24, 26 being secured to a rotating shaft 22 and the discs 23, 25 being slidably keyed thereto and pressed inwards by adjustable springs 29. In Fig. 14 is shown a holder for the balls which has cam-shaped projections 41 which rest, during sharpening, on a cylindrical guide 44 formed on a blade-holder 42 adapted to hold a safety razor blade; the holder 42 may be modified to hold an ordinary razor. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also the use of agate honing-balls. This subject-matter does not appear in the Specification as accepted.
Patent GB-757017-A (GB)
Title: Improvements relating to roller conveyors
IPC: B65G39/00
Filed: 1954-12-06
Abstract: 757,017. Roller conveyers. SPODIG, H. Dec. 6, 1954 [Dec. 4, 1953], No. 35281/54. Class 78 (1). The rollers 1, 2 of a conveyer for elongated metal objects 13, such as tubes or rolled steel sections, are made of ferro-magnetic material and are situated in a magnetic field created by permanent magnets 3, 4 and a magnetic yoke 5. The rollers are mounted in, and magnetically insulated from, the yoke. In a modification a roller, which is magnetically connected to the yoke, is placed between the rollers 1, 2.
Patent GB-213333-A (GB)
Title: Improvements in and connected with rod and like couplings
IPC: F16B7/18
Filed: 1922-12-29
Abstract: 213,333. Stone & Co., Ltd., J., and Baynes, F. W. Dec. 29, 1922. Rod Couplings.-Lengths of pump or other rods b, c are connected together and locked by a coupling comprising an internally screwed sleeve a and a key h which passing through a slot in the sleeve engages flats or like formations on the screwed ends of the rods. The key is held in position by offsetting the ends as at h<1>, Fig. 4. In a modification shown in Fig. 7, two keys p are provided, the ends of each rod being formed with flats on diametrically opposite sides. A single U-shaped strip of metal may be used in this modification as a key, by passing the two free ends of the strip through the slot and on opposite sides of the abutting rods. The middle portion of the sleeve a may be hexagonal or cylindrical in shape.
Patent GB-781066-A (GB)
Title: Improvements in or relating to glass to metal seals
IPC: C03C27/04
Filed: 1953-12-21
Abstract: A hermetic seal between glass and a metal such as iron or mild steel which does not readily seal to glass is formed by depositing on the metal surface, where it is to be sealed, a different metal such as chromium or cobalt and heating to form a surface-alloyed layer at least 0.01 mm. thick and which produces an adhesive oxide and has a co-efficient of expansion nearer to that of the glass than is that of the base metal, and then sealing this layer to the glass.  The deposition may be effected by electrodeposition, vapour deposition, dipping, or inchromization, and a further number of pairs of layers of the base metal and coating metal may be subsequently added before the alloying heat treatment.  Iron and mild steel cathode-ray tube envelopes may be chromized with chromium trichloride at 500 DEG C. at which temperature the necessary alloying of the surface layer takes place.
Patent GB-384100-A (GB)
Title: Improvements in or relating to devices for the hydraulic transmission of power
IPC: F16D33/00
Filed: 1931-12-23
Abstract: 384,100. Hydraulic transmission of power. BEAUMONT, J. M., Dogley Villa, Fenay Bridge, near Huddersfield. Dec. 23, 1931, No. 35507. [Class 69 (ii).] In hydraulic transmission devices, a vaned member f with a braking ring e<2> disposed between the halves of a divided casing e, is interposed between the driving and driven vaned members b, d. The vanes of the driving and intermediate members are inclined and/or curved, and those of the intermediate member may be adjustable. The vanes of the driven member may be parallel to the axis, inclined, or curved. A positive clutch may be provided, and the member d may be slidably mounted on its shaft and acted on by a spring.
Patent GB-448631-A (GB)
Title: Improvements in flicker reducing arrangements for cinematograph projectors
IPC: G03B21/40
Filed: 1934-12-11
Abstract: 448,631. Kinematograph projectors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and LUCAS, G. S. C., 75, Eastlands Road, and HALL, E. S., 16, Oval Road, Hillmorton Paddox, both in Rugby. Dec. 11, 1934, No. 35587. [Class 97 (i)] In projectors having a light source subject to periodic fluctuations in intensity, e.g. an incandescent lamp fed with a 50-cycle alternating. current, the intermittent shutter is adjusted so that the ratio of the frequency of the fluctuations to the time during which light passes through its openings is a whole number ; low-frequency light flicker, widely differing from the frequency of fluctuation of the light source, is thereby avoided. The result may be attained by adjustment of the angles of the shutter openings, or by displacement of the shutter axis.
Patent GB-935966-A (GB)
Title: Improvements in shuttle-propelling mechanism for looms
IPC: D03D37/00
Filed: 1961-10-03
Abstract: 935,966. Circular looms. SOC. D'APPLICATIONS GENERALES D'ELECTRICITE ET DE MECANIQUE. Oct. 3, 1961 [Oct. 5, 1960], No. 35597/61. Class 142 (2). The shuttle 7 is propelled by a roller 1, carried by a revolving arm 2, pushing against a roller 8 mounted on the shuttle. As shown, a toothed wheel 11 attached to the roller 1 meshes with the warp threads and thereby rotates the roller. Alternatively, the toothed wheel may be attached to the roller 8 on the shuttle.
Patent GB-751838-A (GB)
Title: Improvements in or relating to drawer arrangements
IPC: A47B88/493
Filed: 1954-12-08
Abstract: 751,838. Drawers. ERISMANN, P. Dec. 8, 1954 [Dec. 9, 1953], No. 35599/54. Class 52(1). A drawer 20 mounted by rollers in runners 10 is provided with one or more containers 33 each having an area the same as that of the drawer and slidable on runners 31 and rollers 39 through an opening 30 in the rear of the drawer, their rearward movement being limited by a stop plate 45. Rails 44 above the containers prevent tipping when they are in the rearward position. A stop limits the forward motion of the drawer. Plate 45 returns the containers when the drawer is closed.
Patent GB-1072596-A (GB)
Title: Apparatus for treating light sensitive materials
IPC: G03D3/13
Filed: 1965-08-20
Abstract: 1,072,596. Photographic processing apparatus. O. A. GUINAU. Aug.20, 1965 [Aug. 26, 1964], No. 35758/65. Heading G2A. A photographic light sensitive sheet to be treated (developed or fixed) is fed by an inlet 5 between a rotating cylinder 3 and rotatable rollers 7 of smaller diameter than the cylinder which act as guides for the sheet in its path to an outlet 6, where it is fed between rollers 28, 29 one of which dips in a liquid bath 30. The rollers 7 are connected by linkage 8 at each end of the cylinder the rollers being displaceable relative to the cylinder and being pressed against the cylinder by means of adjustably tensioned members 9-14. The tension may be released and the cylinder and rollers removed from the tank 1 for cleaning. The tank is surrounded by a jacket 2 containing a thermostatically controlled liquid which keeps the processing liquid in the tank 1 at constant temperature. The processing liquid is continuously renewed by means of a pump (not shown) supplying fresh liquid to the tank. Two or more tanks may be arranged in series to effect successive treatments. In another embodiment Fig. 5 (not shown) the linkage 8 is dispersed with, the rollers 7 being positioned by driven endless belts (37). Alternatively, Figs. 6, 7 (not shown) the roller shafts may be adjustably mounted in the sides of the tank.
Patent GB-1430605-A (GB)
Title: Flow through tissue culture propagator
IPC: C12M3/04
Filed: 1973-07-27
Abstract: 1430605 Apparatus for tissue cell culture ABBOTT LABORATORIES 27 July 1973 [31 July 1972] 35878/73 Heading C6F Apparatus for growing tissue cells comprises a vessel 9 containing horizontal plates 13, there being gaps e.g. 11 between the ends of the plates and the end-walls of the vessel, which end-walls incorporate inlet and outlet conduits 15 and 17. The vessel may be rectangular and the plates may be formed from a long strip of material which follows a serpentine path about supports adjacent the side walls of said vessel, see Fig. 4. Such supports may comprise vertical rods placed adjacent the corners of the vessel with a framework of bars, rods, pegs, threads, wires, lines or cords extending between. The plates may be of glass or a polycarbonate plastic.