baber/WOPTO huggingface dataset:
Patent GB-460464-A (GB)
Title: Improvements in the manufacture and production of cyanhydrins
Filed: 1935-11-04
Abstract: Aliphatic cyanhydrins are made by reacting in the liquid phase an aliphatic aldehyde or ketone with hydrocyanic acid in the presence of an alkaline earth cyanide, preferably calcium cyanide. Examples describe the production of the cyanhydrins of acetone and of butyraldehyde.
Patent GB-520407-A (GB)
Title: Improvements in folding furniture such as chairs
IPC: A47C4/40
Filed: 1938-10-21
Abstract: 520,407. Folding seats. SEELER, A. Oct. 21, 1938, Nos. 30506 and 30507. Convention dates, Oct. 22, 1937, and Dec. 15, 1937. [Class 52 (ii)] Folding seats are constructed in which the members of quadrilateral frames at each side are pivoted together at three corners and at the fourth corner are adapted to clamp together in one predetermined position but free to be displaced relatively in other positions. Fig. 1 shows a seat 'having at each side quadrilaterals formed by seat arms 5, back frame 3, seat-frame 1 and front braces 6 pivoted together at three corners but at the fourth corner is provided with a displaceable connection which is clamped in one predetermined position. This connection as shown comprises a pin 8 on braces 6 passing through a slot 9 on seat frame and an abutment 10 on braces 6 so that the seat frame is clamped between the pin 8 and abutment 10 when braces 6 are inclined backwardly but is released for adjustable movement -when the bracÚs are brought into an upright position. Fig. 6 shows a pair of abutments 19, 20 on the braces 18 adapted to grip the seat frame 17. Figs. 9 and 10 show similar abutments 26, 27 on the back frame 24 adapted to clamp the seat frame which in this case is also provided with a shaped projection 29, 30 to permit the clamping to take place at different angles.
Patent GB-1116546-A (GB)
Title: Steroid compounds
IPC: C07J75/00
Filed: 1966-07-07
Abstract: Novel compounds of the general formula <FORM:1116546/C2/1> in which R represents a hydrogen atom or an aliphatic hydrocarbon radical containing fewer than 7 carbon atoms; and in which there is a double bond solely in one of the positions 4(5) or 5(10) are obtained by hydrolysing a compound of the formula <FORM:1116546/C2/2> with an acid, followed by, if desired, the isomerization of the D 5(10) linkage of the products thus obtainedto the D 4 position.  Hydrolysis may be effected with acetic acid and isomerization with sodium hydroxide.  The D 2,5(10) starting compounds are obtained by reacting 3-methoxy - 16 - methylene - estr - 1,3,5(10)-triene - 17 - one with diazomethane to give a spiropyrazoline which is heated to give a 17-keto spirocyclopropane, reacting the latter with a Grignard reagent to form a 17b -hydroxy-17a  - hydrocarbyl - 16 - spirocyclopropane and reducing the latter with sodium in the presence of liquid ammonia.
Patent GB-1279153-A (GB)
Title: Improvements in or relating to a liquid reversal developer for negatively charged electrostatic images
Inventor: MUTAFFIS THOMAS DIMITRIOS
IPC: G03G9/135
Filed: 1969-06-17
Abstract: 1279153 Coloured liquid compositions of alkylated N-unsaturated polymers GAF CORP 17 June 1969 [10 July 1968] 30613/69 Heading C3P [Also in Division G2] An electrostatographic liquid reversal developer for negatively charged images comprises (1) an insulating carrier liquid, (2) a dispersed colouring agent, and (3) a polymer of a heterocyclic nitrogen-containing monomer alkylated with 2-2000 C alkyl radicals. The monomer is an N-vinyl monomer or is selected from (N- acryloyl)-pyrrolidone, -piperidone and -caprolactam; N - acryloyl - 5 - methyl - pyrrolidone, N - acryloyl - 6 - methyl piperidone and N- acryloyl-7-methyl caprolactam and their corresponding 5-, 6- and 7-ethyl derivatives; (N- acryloxy-methyl)-pyrrolidone, -piperidone and -caprolactam; (N - 2 - methacryloxyethyl)- pyrrolidone, -piperidone and -caprolactam; (N- methacryloxy - methyl) - 5 - methyl pyrrolidone, -6 - methyl - piperidone and - 7 - methylcaprolactam; N - methacrylamido - methyl -, N - 2 - methacrylamidoethyl - N - 3 - methacrylamidopropyl - and N - (N - phenyl - 3 - acrylamidopropyl)-pyrrolidones, -piperidones and -caprolactams. The polymer may be a homopolymer or a copolymer and may be mixed with a natural hydrocarbon polymer, a thermoplastic polymer of unsaturated hydrocarbons derived from petroleum cracking, or an oil-soluble C- alkyl succinyl derivative of polyethyleneimine. The examples describe developers comprising a hydrocarbon carrier liquid, carbon black and an olefine-alkylated polyvinylpyrrolidone.
Patent GB-193138-A (GB)
Title: Improvements in apparatus for severing stamps or the like from strips and affixing them to envelopes and similar articles
IPC: B65C11/04
Filed: 1921-11-16
Abstract: 193,138. Kaspar, F. Nov. 16, 1921. Damping-machines.-An apparatus for severing stamps from a roll, moistening them and attaching them to envelopes &c. is operated by a spring plunger which operates the moistening device by a cam-lever and the stamp feed through a rack and pinion. The moistening pad 22 is carried on a spring arm 3 attached to a lever 13 pressed against the frame of the machine by a spring, so as to work with considerable friction. During the first portion of the descent of the plunger, the lever 13 is prevented from moving by a piece 17 on the plunger engaging with a projection 16 on it. A roller 12 on the plunger then strikes against a curved arm 14 on the lever and forces it outwards, drawing the pad 22 across the stamp until the end 19 of the arm 3 engages with a detent 47, and a projection 52 on a second arm 15 of the lever 13 strikes against a step 49 on the frame of the machine. The lever 13 remains in this position until the plunger has nearly completed its upward movement, when the roller 12 strikes against the arm 15 and returns the lever to its original position, the roller 12 travelling freely for some space between the arms 14 and 15.
Patent GB-856493-A (GB)
Title: Therapeutic compositions comprising tetracycline antibiotics
IPC: A61K31/65
Filed: 1958-09-25
Abstract: Veterinary and pharmaceutical compositions for oral use comprise at least one tetracycline type antibiotic and at least one of the compounds; glucosamine, glucosamine salts, N-acyl glucosamines. Specified antibiotics are tetracycline, oxytetracycline; chlortetracycline, bromtetracycline, 6 - demethyl-chlortetracycline, 6 - demethyltetracycline, 6-deoxy-6-demethyltetracycline in their amphoteric forms and as salts with acids and bases, as complexes with polyvalent metal compounds and as derivatives such as esters which have similar biological activity as the parent antibiotics. Specified glucosamine salts are those non-toxic salts formed from the base and organic or inorganic acids e.g. the phosphate, sulphate, hydrochloride, hydrobromide, citrate, tartrate, succinate and ralicylate.  The N-acyl glucosamines may be those in which the acyl group is a lower (C1 to 6) aliphatic acyl group e.g. acetyl, propionyl, butyryl.  The ratio by weight of antibiotic to glucosamine compound may be from about 3:1 to 1:3 and is preferably about 1:1.
Patent GB-649804-A (GB)
Title: Improvements in files for documents and binding covers or transfer cases therefor
IPC: B42F13/12
Filed: 1948-11-26
Abstract: 649,804. Loose-leaf binders. HILTON'S OFFICE APPLIANCES, Ltd., and HUDSON, R. Nov. 26, 1948, No. 30674. [Class 146 (i)] In a fitment for a loose-leaf binder having parallel filing pins or posts A, A<SP>1</SP> which are mounted so as to be slidable in relation to each other so as to register with filing holes of differing pitch, the posts A, A<SP>1</SP> are carried by rigid strips B, B<SP>1</SP> lying in the same plane and slidable longitudinally in a guide member C, each strip B, Bl having a longitudinal slot b near the inner end extending from the edge to beyond the longitudinal centre line, the end b<SP>1</SP> of each strip B, B<SP>1</SP> being narrower than the strip and lying in the slot b of the other strip. The dotted line position of the strip B<SP>1</SP> and post A<SP>1</SP> shows the maximum distance apart of the posts, the fitment being intended for use with papers having filing holes the spacing of which corresponds either to the maximum or to the minimum distances apart of the posts A, A<SP>1</SP>.
Patent GB-830605-A (GB)
Title: Improvements in or relating to electromagnetic relays
Inventor: SMITH WILLIAM CHARLES GEORGE
IPC: H01H50/30
Filed: 1955-10-27
Abstract: 830,605. Electromagnetic relays. SMITH & SONS (ENGLAND) Ltd., S. Oct. 29, 1956 [Oct. 27, 1955], No. 30769/55. Class 38 (5). A relay insensitive to acceleration forces comprises a coil 1 surrounding a core (not shown) and surrounded by a magnetic tube 2, the core and tube being connected at the remote end by a magnetic disc, and a brass mounting-block 3 being supported at the other, nearer, end of the core. A pair of slotted arms 4 on the block receive, respectively, armatures 8, 9 pivoted at their centres of mass about an axis 10. An inner polepiece 11 connected to the nearer end of the core co-operates with the lower end of armature 8 and a similar polepiece (not shown) co-operates with the upper end of the armature 9; also, an outer polepiece 13 on a tongue 12 extending from the tube 2 co-operates with the upper end of the armature 8 and a similar polepiece (not shown), co-operates with the lower end of armature 9. Thus when the coil 1 is energized the armatures rotate in opposite directions to bridge their respective pairs of polepieces. The ends of the armatures are connected by pins 19 of a pair of non-magnetic bars 14 pivoted on the block 3 about an axis .15, this axis being at right-angles to and in the same plane as, the axis 10. The bars 14 carry insulating contact-actuating forks 16 and the axis 15 passes through the centres of mass of the bar and fork units. Each fork 16 controls a respective contact blade 23 operating between fixed contacts 21, 22, the blade being moved to engage its contact 22 when the coil 1 is energized and the inherent bias of the blades restoring them against their contacts 21 and returning the armatures, when the coil is deenergized.
Patent GB-1420958-A (GB)
Title: Photo-polymerisable composition
IPC: G03F7/032
Filed: 1972-06-30
Abstract: 1420958 Photopolymerizable compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 8 June 1973 [30 June 1972] 30770/72 Headings C3P and C3R [Also in Division G2] A photopolymerizable composition comprises a soluble polyamide a photoinitiator and an N,N-disubstituted aniline having the Formula I where R is H or CH 3 , in which the benzene ring Y may contain one or more other substituents. The substituents may be the same or different and include an alkyl group containing up to 4 carbon atoms, -COOH, halogen, -COOR 1  in which R 1  is CH 3  or C 2 H 5 , -SO 2 NR 2 R 3  or -CONR 4 R 5 , where R 2 , R 3 , R 4  and R 5  each represent H, CH 3  or C 2 H 5 . Crosslinking agents of the above formula may be employed with alcohol soluble polyamides such as the interpolyamide of 66 and 6 nylon or a terpolyamide comprising 66/6/PACM6, 66/6/6À10, 66/6/ 6À12 and 66/6/6À9 nylons. The cross-linking agents may be present in an amount up to 10 parts by weight of agent to 10 parts by weight of polyamide. The photoinitiator may be, for example, benzophenone.
Patent GB-831656-A (GB)
Title: Improvements in or relating to combustion apparatus
Inventor: CARLISLE DENIS RICHARD
IPC: F23R3/10
Filed: 1956-10-09
Abstract: 831,656. Liquid fuel burners. ROLLSROYCE Ltd. Sept. 27, 1967 [Oct. 9, 1956], No. 30811/56. Class 75(1) [Also in Group XII] In combustion equipment comprising a flame tube 11 within an air casing 10 and having a fuel injector 15 located at the inlet end of the flame tube and adapted to produce a conical spray of fuel, the injector 15 is surrounded by a cowling 17 having a straight through passage for part of the primary air and having a portion extending through the conical spray into the primary combustion zone, this portion being provided with circumferentially spaced apertures 19 so that a part of the spray passes uninterrupted through the apertures and the remainder is intercepted and carried to the down stream end of the cowling by the air flowing in the through passage. The cowling is cylindrical and its upstream end is disposed centrally of swirl vanes 14 surrounding the fuel injector and its downstream end is inturned to form a lip 18. The apertures 19 are axial closed-ended slots. The flame tube 11 is tubular and has secondary air inlet ports 12 in its wall. The air casing 10 may be either tubular or annular. In a modification the axial slots 19 are open at their downstream ends and the cowling has a series of circumferentially spaced inward projections carrying a ring in spaced relation from the fuel injector. In another embodiment both the air casing and the flame tube are annular, the fuel is injected by a series of nozzles mounted on a ring manifold and the apertured cowling comprises axial extensions of annular walls defining an annular air inlet passage to the flame tube. Each nozzle produces a flat outwardly directed spray and a flat inwardly directed spray, the flat sprays from all the nozzles combining to form a pair of conical sprays.
Patent GB-600881-A (GB)
Title: Improvements relating to seats or chairs
IPC: B64D11/06
Filed: 1945-11-16
Abstract: 600,881. Seats. AIRSPEED, Ltd., and HAGG, A. E. Nov. 16, 1945, No. 30840. [Class 52(ii)] A seat or chair, particularly applicable for aircraft pilots, is provided with a pair of movable extensions each of which are connected together so that when one is depressed the other rises. As shown the seat b is provided with a pair of thigh extensions c, d fixed to shafts e, f which are out of alignment and which are adapted to rotate or oscillate in bearings g, h carried by a plate k affixed to the seat frame a. The inner ends of the shafts e, f are provided with cranks l, m which are linked together by a link n so that the rotary movements of the shafts are in opposite directions causing the extensions c, d to move similarly. Other means such as hydraulic may be provided for operating the extensions c,d, which are also manually adjustable to suit the occupant.
Patent GB-367343-A (GB)
Title: Improvements in the purification of gas mixtures containing ammonia and hydrogen sulphide
IPC: C10K1/00
Filed: 1930-10-15
Abstract: 367,343. Gas-purifying materials and processes. JOHNSON, J. Y., 47, Lincoln's Inn Fields, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany.) Oct. 15, 1930, No. 30868. [Class 55 (ii).] In the purification of gas mixtures containing ammonia and more hydrogen sulphide than is required for interaction with the ammonia, all of the ammonia is initially .washed out of the gases and then, before or preferably after the benzene wash, the excess of hydrogen sulphide is withdrawn by dividing the gas stream and the remaining part washed with the liquors used for the removal of ammonia in the undivided gas stream. The ammonia wash comprises a faintly acid thionate or sulphite bisulphite liquor. The hydrogen sulphide in the divided stream may be oxidized catalytically to sulphur dioxide before removal. The gas withdrawn may be used directly for heating the retorts, or may pass through a separate purifier. Specifications 307,903 and 336,425, [both in Class 55 (ii), Gas manufacture &c.], are referred to.
Patent GB-897338-A (GB)
Title: Improvements in or relating to devices for producing a uniform layer of pulverulent or fine-grain substances in sprinkling apparatus
Inventor: BARTHEL WOLFGANG
IPC: B29C31/02
Filed: 1960-09-07
Abstract: 897,338. Endless conveyers. SACHSENRING AUTOMOBILWERKE ZWICKAU VEB. Sept. 7, 1960, No. 30903/60. Class 78 (1). Apparatus for sprinkling a synthetic resin material uniformly comprises a container 1 for the material which has become agglomer ated into lumps due to sintering, a crumbling device comprising a rotating shaft 24 carrying hooks 25 intermeshing with teeth of a rake 23 carried by a plate 5 which is vertically adjustable in a side of the container, a first endless conveyer belt 3 which delivers the material from the container via the crumbling device in a layer of depth determined by the height of plate 5, a second conveyer belt 8 which receives the material from the belt 3 via a skimming roller 7, and a skimming plate 14 which is moved to and fro transversely of the belt 8 to level the material on the latter prior to being sprinkled off by a skimming roller 22. The plate 14 is pivoted at 13 to a slide 12 which is mounted for vertical adjustment on a carriage 11, the latter being provided with rollers 11a running on a rail 10, and being caused to reciprocate along the rail 10 by an endlessdriven chain 16 carrying a bolt 19 engaging a vertical slot in an arm 11b provided on the carriage. A hooked member 21 depending from the bolt is engageable with the plate 14 such that in one direction of movement of the carriage the plate 14 is lowered against a stop on the slide 12 to skim off surplus material into a shoot 20 for recirculation, while in the other direction of movement of the carriage the plate 14 is raised to an inoperative position. The vertical adjustment of plate 5 which adjusts the height of material on belt 3 is effected by rotation of a bolt 27 carried in a bracket 28 secured to the container wall 29. The rake 23 is also vertically adjustable on the plate 5, being locked in position by a nut 26 engaging a threaded stud 4 which is secured to the rake and passes through a slot in the plate 5.
Patent GB-455256-A (GB)
Title: Improvements in and relating to electrodes for electric discharge devices
IPC: H01J1/00
Filed: 1935-11-08
Abstract: 455,256. Electrolytic purification of graphite. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Nov. 8, 1935, No. 30941. Convention date, Nov. 8, 1934. Drawings to Specification. [Class 41] The graphite electrodes of electric discharge devices containing metallic vapour are purified, particularly from alkaline or alkaline earth compounds which readily emit electrons or positive ions by electrolysis in which the graphite is the anode. Preferably a strong acid, e.g. hydrochloric acid is used as the electrolyte, and a further treatment may be given with a weak electrolyte, e.g. water containing a weak acid as carbonic acid. The electrolyte may be heated. Before assembly in the discharge apparatus, the graphite parts are heated in an air-tight or vacuum furnace to about 1500‹ C., to remove final traces of electrolyte.
Patent GB-493403-A (GB)
Title: Multiple lead pencil
IPC: B43K24/12
Filed: 1937-11-11
Abstract: 493,403. Pencil holders. RUF, C. E., and KIDAISCH, A., (trading as RUF, C. E., [Firm of]). Nov. 11, 1937, No. 30967. Convention date, March 18. [Class 146 (iii)] In a pencil holder of the kind having a number of lead carriers f movable into writing- position by means of knobs d sliding in slots in the outer casing a and adapted to be returned to normal position by springs p, a retaining-rest s is provided in the casing adapted to be engaged by notches m in the lead carriers and to be released therefrom by a sleeve q sliding in the casing. The lead carriers are each supported by a blade spring g formed with a head at the rear end provided with the notch m, a cam surface k, and a support n forthe spring p the other end of which bears on a guiding-bracket h for the springs g. The springs g tend to force the notches over the rest s when a carrier is moved to forward position, and a beard r on the inner end of the sleeve q cooperates with the cam surfaces k to release the holders. The sleeve q is normally held in its rearward position by the pressure of the springs p, and its movement is limited by a pin u. An additional spring serving to hold the sleeve q retracted may be provided.
Patent GB-533812-A (GB)
Title: Improvements in or relating to interference suppressors for radio receivers
IPC: H03G11/00
Filed: 1939-11-28
Abstract: 533,812. Wireless receiving circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 28, 1939, No. 31013. Convention date, Nov. 29, 1938. [Class 40 (v)] In an interference suppressor circuit for an interrupted carrier wave telegraphic receiver, the output from the intermediate frequency amplifier is applied through a transformer T to a diode 4 the output from which passes to a voltage limiter valve 7 which is biased to cut-off by a rectified signal. One end of a resistance 9 in the output circuit of valve 7 is connected to the grid circuit of two valves 11, 12 connected in push-pull, the output from which passes via transformer 29 to a narrow band pass filter 14 and hence to a utilization device. A source of tone modulations 16 is connected to the grid circuit of valves 11 and 12 by transformer 27. When a signal is applied to the aerial 1, the rectified current through resistance 5 serves to block valve 7. The consequent reduction in anode current reduces the bias on valves 11, 12 which thus pass tone modulation to filter 14. When the signal ceases, valve 7 becomes conductive and valves 11 and 12 are blocked. The limiter 7 reduces the amplitude of stake impulses down to the signal level and due to the time constant of filter 14, the short impulse have no time to build up to an appreciable amplitude.
Patent GB-446426-A (GB)
Title: Machine for mills for cleaning, husking, rolling or grinding corn and the like
IPC: B02B3/02
Filed: 1934-10-29
Abstract: 446,426. Roller and - breast mills. ZINSSER, L., Murr, Oberamt Marbach, Germany. Oct. 29, 1934, No. 31016. [Class 59] [See also Group I] A machine for cleaning, husking, rolling, or grinding corn comprises a number of spaced discs or segments keyed at an incline upon a shaft and co-operating with a cylindrical or conical casing surrounding the discs, the discs having plain circumferential surfaces extending parallel to the inner surface of the casing. The casing and the discs may be relatively adjustable so that different operations may be successively performed on the grain within the casing by varying the distance of the discs from the casing or separate devices may be used for husking the first and the second skins, a brushing device to clean the fissure of the grain and other devices to roll and grind the cleaned grain. As shown in Fig. 1, angularly set discs 2 rotate in a stationary casing which is provided with a filling aperture 8, a sifting surface 5, an adjustable grinding surface 11 and a brushing surface 9. The discs may be inclined at the same or at different angles to the shaft. An air exhauster withdraws light particles from the casing. In the modification shown in Fig. 4, two shafts 14, 15 carry stone discs 12, 13, keyed inclined at an angle ; segments 16, 17, 18, 19 surround the discs 12, 13 and are simultaneously adjustable through levers actuated from a shaft 43; a hopper 24 is fitted with rotary valves 25, 26 so that grain can be fed to the discs 12, 13, alternately. Sifters 31, 32 may be removably inserted in the outer arms 33, 34 of the segments 16, 19, when the machine is used for cleaning, husking or rolling ; the dirt, husks, and other waste products pass through these sifters and are drawn off by a fan or pass into a collecting device. The husked or cleaned material passes to brushing devices 46, 47, with inclined rotary brushing discs.