baber/WOPTO huggingface dataset:
Patent GB-897675-A (GB)
Title: A holder containing a single sheet of light-sensitive film for x-ray photographic purposes
IPC: G03C3/00
Filed: 1958-08-27
Abstract: 897,675. X-ray sheet film holders. AGFA A.G. Aug. 27, 1958 [Aug. 28, 1957; April 18, 1958], No. 27530/58. Class 98(1). In a holder for a sheet of film, e.g. an X-ray dental film holder, the light-sensitive film is disposed in a light-tight wrapping and is removably connected by a readily releasable mechanical engagement with a pulling strip which partially projects from the holder and when pulled serves to break open the holder and facilitate removal of the film. As shown, a sheet film A has its inner end embraced by the turned over end of a pulling strip B which is folded over to form a light-trap near its outer end which extends from the wrapping D at C, the pack being closed in a lead foil F and a label E. The pulling strip may comprise an upper paper sheet and a lower black paper sheet sandwiching a lead foil and the wrapping may comprise an aluminium foil or white paper sandwiched between an inner black paper and an outer lacquer or plastic layer. In alternative forms the pulling strip may be stamped out to form a film-receiving projection, adhered to the outer end of the film with either a simple lap joint or a fork embracing the film, or may be formed by a thread passed through a hole in the outer film end, or passed round the film to form a cradle as in Fig. 5b.
Patent GB-1164198-A (GB)
Title: Filter for Cigarettes
Inventor: BRANCOVEANU ELISABETH
IPC: A24D/
Filed: 1967-06-15
Abstract: 1,164,198. Filter cigarettes. E. BRANCOVEANU. 15 June, 1967 [20 April, 1967], No. 27615/67. Heading A2C. A filter tip for a cigarette comprises a cardboard tube 1, containing two cellulose filtering wads 3, 6 spaced by one or more perforated flanged cardboard discs 4. Preferably a surface, such as a cardboard disc 5 in Fig. 1 or an unperforated part of another disc 4A, 4B, 4C in Fig. 2, is arranged opposite the perforations.
Patent GB-919009-A (GB)
Title: Electri direction-signalling system for motor vehicles
IPC: B24B21/00
Filed: 1961-07-31
Abstract: 919,009. Vehicle direction Indicators. CARELLO & C. S.p.A., FAUSTO. July 31, 1961 [Aug. 5, 1960; Feb. 24, 1961], No. 27699/61. Class 118. A vehicle indicator system includes a flasher of the hot wire type having a ferromagnetic core and is characterized by the inclusion of a dimming resistance 13 for the indicator lamps 5, 6 in the circuit of the energizing winding 9 on core 1 which is short circuited at night time when the headlamp switch is on and in the provision of a second winding 20 wound in opposition to 9 on the core 1 which is short circuited when resistance 13 is switched in. This arrangement ensures that the flasher always flashes at the same frequency since the compensating winding 20 is disconnected when resistance 13 is in circuit so that the M.M.F. in the flasher core will not decrease due to the current taken by resistance 13. Switch 18 is the headlamp switch which is shown in the off position so that when it is in the " on " position switches 16, 19 are also closed to short circuit resistance 13 and connect in winding 20. The indicator switch is shown at 14. The winding can be selectively connected to either the righthand or the left-hand signalling lamps (Fig. 2, not shown). Two current limiting resistors, one for each side, may alternatively be included in circuit between the indicating switch and the indicating lamps (Fig. 3, not shown).
Patent GB-1395537-A (GB)
Title: Process for the manufacture of an insulating base material  which is opaque to incident printing radiation
IPC: G03C5/58
Filed: 1972-06-14
Abstract: 1395537 Photographic materials and processes using ultraviolet absorbers KOLLMORGEN CORP 14 June 1972 [22 June 1971] 27711/72 Heading G2C A photo-resist material comprises an ultraviolet transparent support which is impregnated or coated with an ultraviolet absorber and coated on both sides of the treated support with a photo-resist layer. Specified u.v absorbers are hydroxybenzophenones, hydroxyphenylbenzotriazole and substituted acrylates. The invention also relates to a process of forming metal images comprising treating a u.v. transparent support which is catalytic to electroless metal deposition with a u.v. absorber (e.g. by impregnation or coating), coating the treated support with a photo-resist, imagewise exposing and developing the photo-resist to remove the unexposed areas and then treating with an electroless metal plating bath to form metal images on the bared support. In the examples, the catalytic support (a glass reinforced epoxy resin laminate) is coated with a solution of 2,2 - dihydroxy-4,4'-dimethoxy-benzophenone in an acrylic polymer or is impregnated with a solution of this u.v. absorber.
Patent GB-464099-A (GB)
Title: Improvements relating to hoisting and like means
IPC: B66D1/48
Filed: 1935-10-08
Abstract: 464,099. Yielding couplings. CLARKE, CHAPMAN, & CO., Ltd., WOODESON, W. A., and MIDGLEY, W. Oct. 8, 1935, No. 27768. [Class 80 (ii)] [Also in Groups XXVI and XXX] In apparatus including a hoisting-rope or like barrel 1 adapted to be driven from a wheel 2 first through a spring 3 and thereafter directly, winding of the spring during more than one revolution of the wheel 2 is permitted by the provision of lugs 7, 8, adapted to travel in paths clear of one another, and a freely swinging arm 9 which, when in engagement with both lugs, transmits the direct drive. In the form shown, the direct drive is delayed for nearly two complete revolutions, but further delay may be obtained by the employment of a plurality of arms 9 which come into operation successively. Fig. 5 shows a modification embodying a safetydevice consisting of a cam 14 connected through shaft 13 and lever 12 to the inner end of the spring 3 and urged by a spring 15 towards a holding drum 16 mounted on the shaft of the wheel 2. In the event of breakage of the spring 3 before the direct drive is established, the cam 14 is pulled into engagement with the drum 16 and prevents dropping of the load.
Patent GB-468679-A (GB)
Title: Improvements in tapping screws and methods of cutting threads
IPC: F16B25/00
Filed: 1935-10-09
Abstract: 468,679. Bolts. CLAYTON, C. E. EVERY-. (Illinois Tool Works) Oct. 9, 1935, No. 27905. [Class 89 (i)] [Also in Group XXII] In a tapping-screw having a threaded liolding portion and a hardened tapered tapping portion provided with a recess traversing at least some of the thread convolutions, the recess is of sufficient cross-section to accommodate cuttings and is so shaped that cuttings are directed towards the entering end of the screw. The cutting edge of the screw is sufficiently rigid to exert a compressive force on the work and so increase the effectiveness of the cutting edge. The screw comprises a holding portion 26, Fig. 1, with threads of full section and a hardened cutting portion 30 with truncated threads 38 having a conical exterior surface but the same root diameter as the threads 26. A cutting edge 34 is formed by a recess 32 which has a depth not greater than the radius of the screw and a width not more than a third of the circumference of the screw. The recess has a transverse arcuate curvature B, Fig. 3, designed to form the cuttings 40, Fig. 6, into continuous spirals which are ejected from the recess by its longitudinal arcuate curvature A. The side walls 36a of the recess are straight and parallel at the entering end of the screw, but merge into the arcuate surface 36 at the top, thus producing initial heavy duty cutting edges 34 having an acute cutting angle and final finishing edges 34a having an obtuse cutting angle. The flanks of the threads are not relieved so that the gradually expanding size of each convolution of the thread produces a compressive action on the work 42 as the screw advances axially, this compression causing a slight wave of material to form in the recess 32 in advance of the cutting edge, thereby providing a heavier cut and ensuring that continuous self-ejecting cuttings 50 will be produced instead of small chips which might clog the recess. In a modification, which is described and claimed in Specification 468,744, the cutting threads 30a, Fig. 14, maintain the same shape, core diameter and pitch as the holding threads 26a but are of gradually decreasing height towards the point of the screw, and in another modification the cutting threads 30b, Fig. 15, retain the same height as the holding threads 26b, but are formed on a core which decreases towards the point. In a further modification, the trailing edges 64, Fig. 3, of the cutting threads are chamfered so as to provide a more obtuse angle in order to relieve the pressure on the thread at this point and prevent chipping of the thread on the screw.
Patent GB-929528-A (GB)
Title: An improved piston packing for hydraulic pit props
IPC: F16J15/16
Filed: 1961-08-01
Abstract: 929,528. Piston packing. RHEINSTAHI. WANKEIM G.m.b.H. Aug. 1, 1961 [Aug. 13, 1960], No. 27928/61. Class 122 (1). In a sealing arrangement between the piston 2 and the cylinder 1 of an hydraulic pit prop extension of the grooved piston packing ring 6 is prevented by a wedge-shaped supporting ring 11 of elastically deformable material, such as a polyamide resin, e.g. nylon, which bears against the cylinder wall and is arranged on that face of the ring not exposed to fluid pressure and a shoulder 4 of the piston. The packing ring 6 is mounted in a recess in the piston 2 and is retained by a flange 9 or by a ring engaging in the groove 16. The ring 11 which is slightly compressed radially abuts against inclined and plane surfaces on the ring 6 and piston 2 respectively and may extend over the whole width of the ring 6. In modifications, the inclined and plane surfaces are formed respectively on the piston and on the ring 6 or the ring 11 has an equilateral triangular crosssection engaging inclined surfaces on both the piston and the ring 6. In a further modification, Fig. 4, the bearing surface 25 of the ring 23 is inclined to the adjoining piston surface providing a gap 24 when the prop is unloaded.
Patent GB-728687-A (GB)
Title: Improvements in and relating to rolls or cylinders for drying and cleaning the feltsof paper-making machinery
Inventor: HALL HUBERT DANIEL
IPC: D21F5/02
Filed: 1952-11-06
Abstract: 728,687. Suction cleaning-rolls of papermaking machines &c. HALL & KAY, Ltd. April 13, 1953 [Nov. 6, 1952], No. 27930/52. Class 96. A roll for drying and cleaning felts of papermaking machines &c. is divided into sectors 11 by longitudinal walls 12 braced by partitions 21 and extending between a hollow shaft 13 and a coarse wire helix 19. The partitions 21 are apertured at 22, and have ribs 23 providing additional support for the wire 19. Suction is applied from an apertured, fixed plate at an end of the roll through, e.g. three of the sectors 11, through the spaces between the convolutions of the wire 19 and through the belt. The endplate, which makes an air-tight joint with rest of the roll may be faced with self-lubricating material &c.
Patent GB-1430130-A (GB)
Title: Locking device for doors
IPC: E05B47/02
Filed: 1973-06-12
Abstract: 1430130 Door fastenings BEAUSIDE PATENTVERWERTUNGS AG 12 June 1973 [28 June 1972] 27954/73 Heading E2A In a device for locking a door 20, or the like, which is part-rotatable about an axis in a surrounding frame 10 there is provided, in an elongate recess open towards the door opening and located in the door frame adjacent the free edge of the door, two elongate members of which one, the operating member 30, is rotatable about an axis parallel to the axis of the door and has a groove 36 for receiving the other member, the locking member 44, which is parallelly displaceable from a locking position where the locking member is retained by the operating member, forced into a longitudinal recess 56 in the adjacent edge of the door, into an unlocking position where, on rotation of the locking member, the locking member can enter the groove 36 of the operating member. As shown, the operating member 30 is biassed by torsion strings 52 to a position in which the edge 62 of the recess 36 engages the roller 44 to retain the latter in a groove 56 in the edge of the door whereby the door is held in a fastened condition; the member 30 may be retained in this position by a pin 43 engaging in the recess 36 and which is co-axial with a knob 38 having an eccentric pin 40 which engages in a recess 42 of the member 30; rotation of the knob, after withdrawal of the pin 43, causes, via the pin 40, the member 30 to rotate to the position in which the recess 36 faces the roller 44 whereby the latter upon opening of the door, is caused by the edge 64 of the door to be withdrawn into the recess. To retain the member 30 in this latter position the pin 43 is engaged in the recess 42. The roller 44 is biassed by springs 54 to move laterally and parallel to the door hinge, and may extend the whole height of the door. The roller may comprise a plurality of spaced, coaxial cylindrical members.
Patent GB-757306-A (GB)
Title: Improvements in and relating to feeding means for sheets or webs used in tabulating,type-writing and like writing or recording machines
Inventor: GARWOOD VICTOR WILLIAM
IPC: H01L23/31
Filed: 1951-11-28
Abstract: 757,306. Typewriters. LAMSON PARAGON, Ltd. Nov. 26, 1952 [Nov. 28, 1951; May 28, 1952], Nos. 27957/51 and 13596/52. Class 100 (4). In a typewriter, tabulating or like machine wherein continuous 'stationery is fed over a platen so that it is either out of contact or in only light contact therewith means are provided to control the feed of the transfer. webs to permit the feed of a small increment irrespective of the amount the stationery is fed. Record sheets a, Fig. 1, are fed over a platen 1 by a positive feed on the infeed and outfeed sides as described in Specification 757,302. The platen 1 is rotated for line spacing by a constantly reciprocating arm 11 which engages a hook member 15 when a solenoid 13 is energized to attract an arm 14 and acts through rods 2, 3, side plates 4, 5, a pawl 8, and a ratchet wheel 9, to turn a spindle 10. A bell-crank lever 30 is at the same time rotated by a lug 32 on the rod 3 and through a Bowden wire 29, detachably connected to it, acts through a pawl 22 and a ratchet wheel 20 and other linkage to rotate a spindle 16 on which is the transfer web b. Thus, for each line spacing, the transfer web is fed a small increment preferably less than the depth of the type so that the whole web is usefully used. Alternatively, the feed of the spindle 16 may be controlled directly by the action of the printing unit or by other parts which are actuated each time the record webs are imprinted or fed. A modified means of feeding the transfer web comprises a solenoid 33, Fig. 4, which when energized acts through an armature 35, lever 36 and pin and slot connections 39 and 41 to activate a similar pawl and ratchet mechanism 20a, 22a in the transfer web feed. The solenoid 33 may be energized at the same time as the solenoid 13 or directly from the other means, mentioned above, for controlling the transfer web feed. Specifications 468,284 and 468,327 also are referred to.
Patent GB-1062375-A (GB)
Title: Diorthosilicic acid esters, and lubricant and transmission liquids obtained from them
IPC: C07F7/04
Filed: 1965-07-07
Abstract: A synthetic lubricant or power-transmitting liquid comprises at least 5% of one or more compounds of the formula A(OSi)2(OR)6- n(OR1)n where A is a polyoxyalkylene residue containing 1-6 etheric oxygen atoms, each R is a polyoxyalkylene glycol ether residue containing 2-8 etheric oxygen atoms, each R1 is a C9- 20 alkyl group and n is 0 or an integer from 1-4, in admixture with up to 95% of another lubricant. Such liquids are stated to retain fluidity at low temperatures.ALSO:Novel compounds of the formula A(OSi)2(OR)6- n(OR1)n wherein A is a polyoxyalkylene residue containing 1-6 etheric oxygen atoms, R is a polyoxyalkylene glycol ether residue containing 2-8 etheric oxygen atoms, R1 is an alkyl group of 9-20 carbon atoms, and n is 0, 1, 2, 3 or 4, may be made by conventional procedures, e.g. by reacting the requisite glycols with SiCl4. Individual R or R1 groups may be the same or different.  Preferred esters have n = 0 or 3, and A is (CH2CH2O)2 or 3-CH2CH2-, R is di-or triethylene glycol ethyl or n-butyl ether and R1 is isodecyl or isotridecyl.  The compounds are stated to be good low-temperature lubricants and power-transmitting fluids (see Division C5).
Patent GB-837956-A (GB)
Title: Improved jet noise suppressor nozzle
Inventor: LOMBARD ADRIAN ALBERT
IPC: F02K1/48
Filed: 1957-09-04
Abstract: 837,956. Jet-propulsion nozzles. ROLLSROYCE Ltd. Aug. 5, 1958 [Sept. 4, 1957], No. 27992/57. Class 110 (3). In a jet noise suppressor nozzle comprising a plurality of hollow flow dividing members which are closed at their upstream ends and open at their downstrean ends and extend radially into the jet pipe so as to form longitudinal passages between themselves for the flow of jet gases, alternate flow-dividing members extend radially inwardly to greater and lesser extents. The jet noise suppressor nozzle 40 has a casing 41 through which the hot jet gases flow in the direction of the arrow 39. A number of hollow flow-dividing members 42, 43, which are closed at their upstream ends and open at their downstream ends and extend radially into the jet pipe, are mounted in the casing 41. The members 42, 43 alternate, the members 43 being of considerably greater radial extent than the members 42. Each member 43 has an aperture 44 and guide vanes 45 by means of which atmospheric air is directed into the member 43 from which it flows out at the downstream end. Apart from the apertures 44 and the open downstream end, each member 43 is closed and increases in radial extent in a downstream direction. Each member 42 is of similar construction and has an aperture 46 with guide vane 47. The members 43 are braced by aerofoil struts 49. The flowdividing members are of semi-elliptical shape which provides a good faired form and is suitable for resisting pressure. Inner shims 42<1>, 43<1> are provided to facilitate the atmospheric air flow. For the most efficient operation the ratio of the cross-sectional areas which are disposed externally and internally of the flow-dividing members are within the range 1: 1.75 to 1: 2.0. The diameter of the inscribed circle touching the innermost tips of the members 43 should be reduced to the minimum. The innermost tips of the members 42 also lie on a circle.
Patent GB-465945-A (GB)
Title: Heating systems comprising radiators through which hot liquid circulates
IPC: F24H3/00
Filed: 1935-10-11
Abstract: 465,945. Radiator stoves. WALTON, J. I. AUSTEN-. Oct. 11, 1935, No. 28062. [Class 126] [Also in Group XIII] In a radiator stove comprising a heatradiating chamber h through which circulates water heated in a boiler a, the chamber has a greater heat dissipating surface and crosssectional area at the lower end than at the upper end. Heat-conducting bars k in the flue of the boiler are made of brass or bronze with about 0À2 per cent barium chloride. In an electrically heated boiler, the heating element is surrounded by a fireclay tube impregnated with barium chloride. Specification 60/15, [Class 64 (ii)], is referred to.
Patent GB-1074369-A (GB)
Title: 17-alka-1',3'-diynyl)-steroids
Inventor: FEATHER PETER
IPC: C07J1/00
Filed: 1965-07-02
Abstract: Novel steroids having in the 17-position the structure <FORM:1074369/C2/1> (wherein R is C1- 5 alkyl; and R1 is H, methyl, ethyl or tetrahydropyranyl) are prepared by alkylation under anhydrous conditions of a metal derivative of the corresponding 17a -butadiynyl-17b -OR1 steroids.  This process may be effected with an alkali metal derivative and an alkyl halide.  The alkali metal derivative may conveniently be formed by adding a solution of the steroid in tetrahydrofuran to the amide of the alkali metal in liquid ammonia, and when in this method a molar ratio of sodamide to a 17-hydroxy-steroid not less than about 2:1 is used the hydroxy group is alkylated as well as the butadiynyl group; while with equimolar quantities a mixture of products is obtained which can be separated by thin layer chromatography and/or fractional crystallization.  17b -tetrahydropyranyloxy products may be acid hydrolysed to the free 17b -ols, which may be alkylated.  The steroids may belong to the androstane or 19-nor-androstane (estrane) series and may optionally contain substituents and/or double bonds in the steroid nucleus, such as D 1, D 2, D 3, D 4, D 5, D 5(10), D 6, D 7, D 8, D 9, D 9(11), D 11 and D 14 double bonds, hydroxyl at positions 1, 3, 4, 5, 6 and 11, or acyloxy group, alkyl or alkenyl at positions 1, 2, 4, 6, 7 or 16, and carbonyl at positions 2, 3, 6, 11 and 12.  Hydroxy groups may be alkylated during the process unless protected as tetrahydropyranyloxy groups; acyloxy groups may be hydrolysed; and carbonyl groups may interfere with the process and are preferably protected by conversion to ketals. Products containing a D 2,5(10)-3-alkoxy grouping may be hydrolysed directly or via the D 5(10)-3-ones to the D 4-3-ones, and D 3,5-3-enol ethers may be hydrolysed to the D 4-3-ones as may D 5-3-ketals.  3b ,17b  - bis - (Tetrahydro - 21 - pyranyloxy) - 17a  - butadiynyl - androst - 5 - ene is prepared from the diol and dihydropyran.  17b -(Tetrahydro - 21 - pyranyloxy) - 17a  - butadiynyl - 4 - methyl - estra - 1,3,5(10) - triene, 17a  - butadiynyl - 3 - methoxy - 17b  - (tetrahydro - 21 - pyranyloxy) - estra - 1,3,5(10) - triene, a mixture of D 5- and D 5(10) - 17a  - butadiynyl - 17b  - (tetrahydro - 21 - pyranyloxy) - 3 - ethylenedioxy - 19 - nor-androstene (the parent 17b -ols of which are prepared from the D 4-3-one and ethyleneglycol), 17a  - butadiynyl - 17b  - (tetrahydro - 21 - pyranyloxy) - 3 - ethylenedioxy - androst - 5 - ene (the parent 17b -ol of which is prepared from the D 4-3-one and ethyleneglycol), and 17a -butadiynyl-3,17b  - bis(tetrahydro - 21 - pyranyloxy) - estra-1,3,5(10)-triene are prepared similarly.  The steroids of the invention, which may possess estrogenic, progestational, claudogenic, ovulation-inhibiting and gonadotrophin-inhibiting properties, may be administered as tablets, pills, injections or vaginal tampons.