baber/WOPTO huggingface dataset:
Patent GB-898295-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J5/00
Filed: 1960-03-14
Abstract: The invention comprises compounds represented by the formulae <FORM:0898295/IV (b)/1> wherein X is hydrogen, fluorine or chlorine and Y is b -hydroxymethylene or carbonyl, process for the preparation of 6a , 16b -dimethyl-11-ketoprogesterone by (1) diketalising 11a -hydroxy-16b -methylprogesterone with a lower alkylene glycol; (2) epoxidising the 5(6)-double bond of the thus produced diketal with a peracid to produce a 5a , 6a -epoxide; (3) reacting the thus produced compound with a methyl Grignard reagent to produce a 5a -hydroxy-6b -methyl compound; (4) hydrolysing the ketal groups with acid to give 5a , 11a  - dihydroxy - 6b , 16b  - dimethylallo - pregnane-3,20-dione; (5) oxidising the 11-hydroxy group to an 11-keto group with an oxidising agent; and (6) dehydrating the 5a -hydroxy group, to produce 6a , 16b -dimethyl-11-ketoprogesterone; and a process for the preparation of a compound having the formula <FORM:0898295/IV (b)/2> wherein the dotted line in the 1,2-position represents an optional single bond, X is hydrogen, chlorine or fluorine and Y is carbonyl or b -hydroxymethylene by subjecting a compound having the formula <FORM:0898295/IV (b)/3> wherein the dotted line, X and Y are as defined above to reduction by known methods for the removal of iodine, e.g. with sodium thiosulphate.  3, 11 - Diketo - 6a , 16b  - dimethyl - 4, 17 (20) - pregnadien-21-oic acid alkyl ester is obtained by diglyoxalating, trihalogenating, rearranging and dehydrating either 6a , 16b  - dimethyl - 11 - ketoprogesterone or 5a -hydroxy-6b ,16b -dimethylallopregnane-3,11,20-trione.  By protecting the 3-keto group, e.g. by forming a 3-enamine, the 21-carboxylic acid ester group may be reduced with lithium aluminium hydride to obtain 6a ,16b -dimethyl - 11b , 21 - dihydroxy - 4, 17 (20) - pregnadien-3-one into which a D 1-double bond may be introduced either microbiologically or with selenium dioxide.  Specifications 749,195, 761,490, 761,527, 761,528, 779,001 and 779,002 also are referred to.ALSO:Pharmaceutical compositions having anti-inflammatory and progestational activity comprise compounds having the formulae <FORM:0898295/VI/1> wherein X is hydrogen, fluorine or chlorine, and Y is b -hydroxymethylene or carbonyl, antibiotics e.g. penicillin, neomycin, chloramphenicol and novobiocin, and a pharmaceutical carrier.  They are administered orally, intramuscularly or topically in tablets, sterile suspensions and ointments. Specifications 749,195, 761,490, 761,527, 761,528, 779,001 and 779,002 also are referred to.
Patent GB-442685-A (GB)
Title: Improvements in the variable coupling of electrical oscillatory circuits
IPC: H03H7/01
Filed: 1934-10-11
Abstract: 442,685. Valve circuits ; impedance networks. MURPHY RADIO, Ltd., and ELLIS, H. D., 62, Brook Street, Hanover Square, London. Oct. 11, 1934, No. 29161. [Classes 40 (iii)] and 40 (v)] A band-pass filter comprises two oscillatory circuits reciprocally coupled by two valves. The input I is applied to a tunable circuit comprising coil L1, variable condenser C1, resistance R1 and large condenser C3, and the output O is taken from a similar circuit L2, C2, R2, C4. The grid circuits of the valves VI, V2 which may be of the tetrode or pentode type are connected respectively across the coils L1, L2, whilst the plates of the valves are cross-connected, the plate of V1 to a point on the second circuit, and the plate of V2 to a point on the first circuit. The degree of coupling between the two circuits may be varied by varying the slope of the valves by applying variable voltage P, B to the inner grids, or to the suppressor grids if pentode valves are used, or to both. The band-pass width is thus adjusted. As the internal resistance of the valves, and therefore the damping of the tuned circuits, also varies with the bias, the coupling may be maintained at the critical value at which a flat-topped response curve is obtained. The variable bias may be obtained by the methods used for automatic volume control. In a modification, the valve plates are held at a fixed voltage, their suppressor grids are connected to a source of variable bias, and the output connection to the tuned circuits is taken from the intermediate grids. The positions of the coils L1, L2 and resistances R1, R2 in the timed circuits may be reversed. The Specification discusses the values of the various impedances and the conditions necessary to avoid self-oscillation.
Patent GB-256101-A (GB)
Title: Improvements in or relating to combined buffer and draw-gear for railway vehicles
IPC: B61G9/10
Filed: 1925-11-19
Abstract: 256,101. Priebe, H. C. Nov. 19, 1925. Combined buffer and draw-gear of the type in which friction is produced by cam surfaces comprises a yoke 7, Fig. 1, connected to a coupler stem 6 by a key 2 sliding in slots 4 in the draught cills and provided with lost motion preferably in a slot 8 in the yoke. A front follower plate 12 is secured by a key 3, the ends of which are adapted to slide in slots 9, 5 in the yoke and draught cills respectively. A hollow rear follower plate 12 houses springs 19 and is provided at the outer end with sockets 15, 16 in which are fulcrumed inner rockers 17, 18 which coact with rockers 22, 23 respectively frictionally mounted in sockets 20, 21 in the front follower 12. Each rocker 22 is provided with friction surfaces 25, 27 engaging similar surfaces 24, 26 respectively on each rocker 17, so that in draught or buffing the friction surfaces slide over one another under the action of the springs 19. A plate or pawl 32 on each rocker 17, 18 engages with the coacting rocker 22, 23, when the draught or buffing stresses are removed, to restore the rockers to the normal position. A single pair of rockers may be employed.
Patent GB-1156723-A (GB)
Title: Resilient Silicone Rubbers.
IPC: C08L83/04
Filed: 1966-06-29
Abstract: 1,156,723. Silicone rubbers. BENDIX CORP. 29 June, 1966 [12 July, 1965], No. 29237/66. Heading C3T. A rubber stock, heat curable to a resilient rubber having a hardness of not greater than Shore A40, is made by mixing together (a) a methylvinylpolysiloxane gum containing submicron silica (e.g. fumed silica) (b) a methylvinylpolysiloxane gum having some of the vinyl groups replaced by 3,3,3-trifluoropropyl groups and containing sub-micron silica (e.g. fumed silica) (c) a metal oxide buffer (d) a heat stabilizer and (c) an organic peroxide curing agent. Ingredient (b) may be replaced by two components one being the gum free from silica and the other being the gum containing silica. Specified components are:-for (c)-a mixture of silica, a calcium oxide, magnesium oxide, alumina, sodium oxide and potassium oxide; for (d)-red iron oxide or a mixture thereof with black iron oxide, ferric oxide monohydrate, carbon black, ferric octoate and barium zirconate; for (e)-di-tert. butyl peroxide, butylperoxyisopropyl carbonate, benzoyl peroxide, 2,4- dichlorobenzoyl peroxide and 2,5-bis(butyl peroxy)-2,5-dimethylhexane.
Patent GB-400768-A (GB)
Title: Improvements in and relating to transmitting or rectifying electric discharge valves
IPC: H01J19/36
Filed: 1932-10-19
Abstract: 400,768. Making anodes for electric discharge devices. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Oct. 19, 1932, No. 29254. Convention date, Oct. 19, 1931. Drawings to Specification. [Classes 83 (i) and 83 (ii).] Casting composite articles.-In the construction of a tubular anode which consists of an outer cylinder of material which has a high thermal conductivity, and an inner tube of material of high melting point in intimate contact therewith, the formation of the tube takes place within the cylinder. The material of high melting point, which may consist of tungsten, tantalum, molybdenum, zirconium or titanium, may be cast into a copper cylinder, preferably in a vacuum, or it may be applied thereto as a paste which is subsequently sintered. Specification 271,960, [Class 39 (i), Electric lamps, Arc, &c.], is referred to.
Patent GB-685768-A (GB)
Title: Improvements relating to wind instruments such as saxophones
IPC: G10D9/04
Filed: 1949-11-15
Abstract: 685,768. Saxophones. BEESON, G. Nov. 15, 1950 [Nov. 15, 1949], No. 29262/49. Class 88 (ii). A valve pad for a saxophone is faced with a slightly concave disc d of nickel silver. The pad comprises a disc of box-cloth a backed with cardboard band covered with a skiver c. The pad and the metal disc are secured together by means of a double headed rivet f, one head g of which is concave to conform to the shape of the metal disc. The metal disc is turned at the edge e to bite into the skiver covering.
Patent GB-789143-A (GB)
Title: Improvements relating to rotary pumps
IPC: F04C14/04
Filed: 1955-10-14
Abstract: 789,143. Rotary pumps. HOBOURNEATON MANUFACTURING CO., Ltd. Oct. 14, 1955 [May 31, 1955], No. 29313/55. Class 110 (2). A rotary pump for delivering fluid in the same direction for either direction of rotation of the rotors has an outer gear ring 24 meshing with an inner gear-wheel which is in two parts 26, 28, the part 26 being keyed to a driving shaft 14. The pump casing 16 has a bore comprising two arcs AB, BC of circles with equal radii and centres D, F respectively, joined by an arc CA of a circle, centre E, so that for the direction of rotation indicated by the arrow A the outer circumference of the ring 24 engages the arc AB but when the direction of rotation is reversed the ring 24 moves bodily to the right and its outer circumference engages the arc BC so that the pump discharges in the same direction through the same port for both directions of rotation. The two parts 26, 28 of the inner gear are pressed apart by a spring washer 27 or by coil springs so that the part 28, which is driven by the gear ring 24, frictionally engages a side wall 18 of the pumping chamber and so lags behind the driving part 26 to facilitate a quick response of the pump to reversal of the direction of rotation.
Patent GB-1389847-A (GB)
Title: Photo-electric range finder
IPC: G01C3/08
Filed: 1972-06-23
Abstract: 1389847 Photo-electric range finding K VOCKENHUBER and R HAUSER 23 June 1972 [23 June 1971 14 Jan 1972] 29497/72 Heading H4D A range finder has an optical system providing two separate images of a scene to be ranged which are always identical or mirror images of each other when the range setting of the optical system corresponds to the range of the scene, said condition being detected photo-electrically. In Fig. 2 a scene is split into two mirror images and photo-cell pairs n-1, n-1<SP>1</SP> to n-19, n-19<SP>1</SP> are sequentially interrogated to give electrical signals for each pair, the signals being compared in an electrical circuit. At correct range setting the composed signals are identical. In the prior art method in which the scene is split into two partial images which are not mirror images or identical (Figs. 1a, 1b, not shown), it is stated that the range finger may give a correct range setting indication when the two partial images are incorrectly matched (Fig. 1b, not shown). Fig. 5 illustrates the electrical circuit. Photocell lines n, n<SP>1</SP> are interrogated by pulses from generator 15, the interrogation being initiated by pulses C, D and an interrogation cycle being determined by device 16. A delay 18 is alternately enabled so that pulse D is alternately delayed with respect to pulse C, thus synthesizing a lateral shift in the mirror or identical images. The resulting signals are passed to amplifiers 20, 20<SP>1</SP>, enabled by device 24, only when signals are expected, to high pass filters 21, 21<SP>1</SP>, to suppress the effects of ambient light, amplifiers 22, 221 and Schmitt triggers 23, 23<SP>1</SP> to digitize the signals. The digitized signals are passed to an Exclusive - OR gate 25, integrator 26 and amplifier 27 feeding high pass filter 37. Two bi-stables 32, 33 receive the filter 31 output and the delay energizing signal E. The bi-stables form a phase detector and determine the lighting of the lamps 29, 30 which give no signal at correct range setting, and either one flashes according to the direction of the incorrect setting. The signals L, M may be used for auto-focusing. Fig. 8 illustrates a camera having an objective 41 and film plane 44. A beam splitter 42 directs light from the scene to a lens L3 and to two lenses L1, L2 via beam splitter 46, lens L1 being of short focal length and lens L2 being of long focal length. The lenses direct light on to photo-cells 47, 48. At correct range setting the images on the photo-cells are the same but at incorrect setting the images will be of different size and focus (see Fig. 9, not shown). The photo-cells may be replaced by a system similar to that of Figs. 2 and 5 or by a photo-cell consisting of concentric sensitive elements (Fig. 10, not shown). Optical apparatus for giving the images of Fig. 2 is detailed (Figs. 3, 4, not shown).
Patent GB-329602-A (GB)
Title: Pneumatic hammers
IPC: B25D9/20
Filed: 1929-09-30
Abstract: 329,602. Chicago Pneumatic Tool Co., (Assignees of Steven,s, E. W.). Oct. 1, 1928, [Convention date]. Percussive hand tools.-The valve case is arranged at the rear of the cylinder and comprises interfitting parts 12, 13 supporting a sleeve valve 14 through which the piston passes. The valve is of three diameters 14a, 14b, 14<c>, the ends of the valve and the. faces of flange 14<c> constituting four pressure areas. The valve is moved to the right by cushioned main cylinder fluid, and is moved rearwardly initially by fluid from the cylinder controlled by the piston and passing through passage 15. A non-return valve 17 is arranged in an enlargement 15<c> of the passage 15 to prevent reverse movement of pressure fluid therethrough. The rearward movement of the valve is completed by fluid admitted through a port 18<a> uncovered by the flange 14<c>, which port communicates with the supply passage 19 by passages 18, 20. The continued movement of the valve opens ports 21a in a passage 21 to supply fluid to the fonvard cylinder end. A bye-pass 22 permits fluid to pass from the inlet groove 20<a> to the rear of the piston to drive it forward when the piston covers the groove. The forward cylinder end exhausts through passages 21, ports 21<b>, chamber 23 rearward of flange 14<c> and ports 24<a>, 24 to atmosphere, Fig. 3. Upon the valve movement to the left, the exhaust ports 24b for the rear cylinder end are opened. A vent 21<c> releases any air trapped in the valve chamber 16 after the ports 21a are closed by the flange 14<c>. The valve 17 obviates waste of pressure fluid when ports 18a are opened.
Patent GB-979877-A (GB)
Title: A process for the production of 4-methylpent-1-ene
IPC: B01J23/04
Filed: 1963-07-25
Abstract: A hydrocarbon compound of an alkali metal other than lithium is obtained together with metallic lithium when an organo-lithium compound LiR in which R is aryl, cycloalkyl or C2-C18 alkyl is reacted with a dispersion of another alkali metal in an inert hydrocarbon. In an example, potassium dispersed in a diesel oil boiling in the range 180-220 DEG C. is reacted with butyl lithium and the butyl potassium separated by decantation from the resulting lighter lithium.ALSO:4-Methylpentene-1 is obtained by dimerization of propylene in an inert hydrocarbon in the presence of lithium obtained by reacting an organo-lithium compound LiR (in which R is aryl, cycloalkyl or C2-C18 alkyl) with another alkali metal.  Dimerization is effected at 100-250 DEG  C. preferably in a hydrocarbon which does not boil at the dimerization, e.g. a diesel oil boiling in the 180-220 DEG  C. range.  To form the catalyst potassium is melted in the hydrocarbon to form a dispersion which is cooled with stirring. Butyl lithium in the same hydrocarbon is added. The organo-potassium compound may be removed or the whole mixture used as catalyst.ALSO:Metallic lithium as a fine dispersion in a hydrocarbon is obtained by reacting another alkali metal, preferably potassium, in dispersion in an inert hydrocarbon with an organo-lithium compound LiR in which R is aryl, cycloalkyl or C2-C18 alkyl.  The hydrocarbon may be a diesel oil boiling in the range 180-220 DEG C., and the lithium compound butyl lithium.  The butyl potassium also formed is separated from the lighter lithium by decantation.ALSO:A mixture of lithium and an organo-derivative of another alkali metal, for use as catalyst in dimerising propylene, is obtained by reacting a dispersion of an alkali metal, preferably potassium, in an inert hydrocarbon with an organo-lithium compound LiR, in which R is aryl, cycloalkyl, or C2-C18 alkyl.  The hydrocarbon may be a diesel oil boiling in the range 180-220  DEG C. p
Patent GB-1389928-A (GB)
Title: Carriers for packages
IPC: A45F5/10
Filed: 1972-06-23
Abstract: 1389928 Package carriers ILLINOIS TOOL WORKS Inc 23 June 1972 [25 June 1971] 29588/72 Heading A4G A package carrier comprises a strip 11 of resiliently deformable thermoplastic material e.g. polyethylene or polypropylene, of substantially uniform thickness, each end portion of the strip having a longitudinally extending slit 14 extending substantially along the axis of the strip,_each end of the slit 14 having a curved slit 16 about the end and extending through an arc of more than 180 degrees of a circle, the portion of the strip between the end portions forming a handle. Packages are supported as shown in Fig.2.
Patent GB-199320-A (GB)
Title: Improvements in or relating to boot or shoe fillers
IPC: A43D3/14
Filed: 1922-10-30
Abstract: 199,320. Buckland, V., and Hawkins, H. Oct. 30, 1922. Trees and stretchers.-A boot or shoe filler comprises a skeleton frame of wire or other suitable material, consisting of a main longitudinal member a following the upper vertical contour of the shoe and provided at intervals with splayed depending legs or arms b<1>, b<2> b<3>. The filler may be used with the shell described in Specification 187,548.
Patent GB-689020-A (GB)
Title: Improvements in and relating to insulating structures and method of assembling the same
IPC: F25D23/06
Filed: 1951-12-18
Abstract: 689,020. Cold-retaining cabinets. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 18, 1951 [Dec. 23, 1950], No. 29611/51. Class 64 (ii) Relates to insulated cabinets, such as household refrigerators, of the kind in which the space between outer and inner compartments 2, 3 is traversed by spaced highly-reflective sheets 10 of aluminium foil or the like supported on corner spacer members 11. According to the invention the spacers 11 comprise flexible inflatable members, Fig. 6, of rubber or the like forming with the sheets 10 an insulation frame which is attached at 11a to the inner compartment. The members are deflated to facilitate insertion of the assembly, as shown in Fig. 4, through a reduced opening in the outer compartment, after which the members 11 are inflated to cause the insulation frame to fill the space between the side walls of the compartments. The base insulation is formed of a bevelled non-conducting frame 20 slotted to receive sheets 19 of aluminium foil. A lid is provided for closing the top of the cabinet.
Patent GB-726173-A (GB)
Title: A suspended sliding door
IPC: E05D15/06
Filed: 1953-10-27
Abstract: 726,173. Sliding doors. COWDROY, T. C. Oct. 27, 1953 [Feb. 5, 1953], No. 29629/53. Class 20 (3). [Also in Group XXXIV] A suspended sliding door 10 comprises a ball track fitting 12 mounted upon the upper end of the door, a rail 18 disposed within the ball track fitting, ball bearings 19 within the fitting 12 and resting upon the rail 18 and a channel 23 formed in the lower edge of the door to receive a guide member 24 secured to the floor 25 adjacent to the door. The fitting 12 which is secured, as by screws 13 through a base flange 14, to the top edge of the door, has long and short limbs 16, 17, joined by a cylindrical portion 15 containing the ball bearings 19. The ball bearings occupy a space which is half the total length of the track fitting 12 and roll upon an upper arcuate surface 22 of the rail 18, the latter being screwed at 21 to the door head 20. A cover strip (not shown) may be provided to screen the fitting 12. The guide member 24 may be secured directly to the floor 25 or as shown may be received in a groove 26 in the latter.
Patent GB-443700-A (GB)
Title: Means for hanging up magnesium lights and the like
IPC: F21K5/08
Filed: 1935-10-28
Abstract: 443,700. Magnesium lights. ELIASSON, K. E., and LEVINSON, J. T. L., Svenshogen, Sweden. Oct. 28, 1935, No. 29676. [Class 9 (ii)] [See also Group XVII] The suspension cord 4 of a magnesium light or the like 1 stored in a tubular container 2 is connected to a fastening device 6 attached to a cover or closing plug 3, or is attached to the closing plug which is then provided with a fastening device 8, so that when the light is removed from its container it may be suspended from a ceiling or other suitable support by means of the fastening device. A match 5 is provided for igniting the light. The fastening device may be an adhesive tab as indicated at 6, or a vacuum cup as indicated at 8. The vacuum cup may constitute the outer or inner end of the cover or may be provided with a cork-screw for attachment to a closing plug.
Patent GB-1099748-A (GB)
Title: Improvements relating to conduit systems
Inventor: MARTIN JOSEPH LUCKEY
IPC: F16L59/13
Filed: 1966-07-01
Abstract: 1,099,748. Pipe expansion bends; pipes. RIC-WIL (U.K.) Ltd. July 1, 1966 [July 13, 1965; July 26, 1965], No. 29728/66. Headings F2G and F2P. A conduit assembly for transmitting fluids, comprising a pipe 12 having heat-insulating sleeves 15 mounted by spaced supports 14 in a surrounding casing 11, is provided with a U-shaped expansion bend 10 wherein the supports 22 and the casing 23 of the arms 20, 21 at least of said U-shaped bend are of complementary elliptical cross-sectional shape to prevent twisting the supports 22 relative to the casing 23 and wherein said elliptical supports 22 are formed with elongated slots 41 extending parallel to the major axis of the elliptical supports to permit transverse movement of the pipe portions in said arms resulting from longitudinal expansion of the main pipe lengths. As shown, each support comprises an annular elliptical body 35 of concrete or other insulating material, an outer corrugated band 36 welded to an embedded band 37, and an inner band defining the wall of the elongated slot 41. A further elongated slot 42 parallel to and below the slot 41 enables a further pipe 13 to be included in the conduit assembly.
Patent GB-171383-A (GB)
Title: Improvements in and relating to threaded sheet metal parts
IPC: B60C29/06
Filed: 1921-01-08
Abstract: 171,383. Schrader's Son, Inc., A., (Assignees of Schweinert, M. C.). Oct. 11, 1920, [Convention date]. Drawings to Specification. Ornamenting.-Dust caps for tyre valves, or other threaded sheet metal parts, having interna.l and external threads formed by pressing or otherwise, have the exterior threads knurled to obliterate its threaded appearance.