baber/WOPTO huggingface dataset:
Patent GB-500791-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B19/12
Filed: 1937-08-11
Abstract: 500,791. Reflex photographic cameras. STEENBERGEN, J., DIEBEL, O., FRAUENSTEIN, H., ENGLISCH, E., SCHUBERT, H., and KOCH, C., (trading as IHAGEE KAMERAWERK STEENBERGEN & CO.). Aug. 11, 1937, No. 26734/38. Convention date, Feb. 3, 1937. Divided out of 500,626. [Class 98 (i)] A reflex photographic camera has a foldable viewing hood and an operating lever for releasing the shutter, means being provided to prevent actuation of said lever when the hood is in the closed or non-focusing position. In the form shown the mirror 3 is used in conjunction with a viewing lens 4 with a ground under surface. Members 7, 8, 12 are pivoted along the edges of the viewing lens and together with a cover 9, form the sides of the hood. Springs S<1> urge them to the positions shown when the catch 14 holding the cover 9 is released. The member 12 carries at its centre a lens 13 and the member 8 has an aperture 11. Either may be depressed over the lens 4 to assist view-finding. During the setting of the camera a lug 20 on the shaft 18 forming part of the shutter mechanism strikes a projection 20 on a plate 21 pivoted on the wall of the chamber 1 and carrying a pin 22 projecting through an arcuate slot in the wall. The plate is rotated and the pin 22 moves the mirror 3 to the focusing position where it is retained under pressure from the spring S by a detent 17 on the end of a spring blade 29, and also by a detent 23 which engages a projection 25 on the plate 21. The detent 23 is later removed by means (not shown) associated with the-shaft 18. The shutter release is effected by a button acting on the part 26 of a lever 27 pivoted at 28. This level carries at 30 a projection which lifts the blade 29 and releases the focusing mirror. During the return movement the plate 21 rotates freely to its initial position under pressure from the mirror. When the cover 9 is closed the release is prevented by a latch 32 pivoted to the cover at 33 and entering a slot in the lever 27 to hold it against movement.
Patent GB-1089550-A (GB)
Title: Game apparatus
IPC: A63B63/08
Filed: 1965-06-24
Abstract: 1,089,550. Table games; outdoor games. S. J. KOLWICZ. June 24, 1965 [Sept. 25, 1964], No. 26734/65. Headings A6D and A6H. A game apparatus comprises a target adapted to receive balls or other projectiles in one or more scoring zones, and a trampoline-like structure comprising a sheet of fabric held in a frame by peripherally disposed resilient securing means, said structure being or being adapted to be, spaced from said target and being or being adapted to be, disposed with the fabric inclined upwardly towards the target, said structure being adapted to receive a ball thrown thereon and loft it towards said target. As shown in Fig. 1 projectiles fall from said scoring zones past stationary obstruction pins 28 into further scoring channels defined by dividers 27. The stop rail 8 may be coinactuated to release spent projectiles to a trough 9. The structure 2 need not be mounted on the same base member 1 as the target, and when they are separate, the pins 28 are dispensed with and the scoring channels may be provided either directly under the target base 17, or under the structure 2. Moreover, for outdoor use, both the structure 2 and the target may be provided with spikes for insertion into the ground, and in this latter instance, the scoring compartments are replaced by nets adapted to retain the projectiles therein. Audible signals and automatic scoring devices may be arranged for operation by the projectiles.
Patent GB-1270445-A (GB)
Title: Stabilized polymer compositions
IPC: C08K5/3462
Filed: 1969-05-28
Abstract: 1,270,445. Polymer-pyrimidine derivative composition. ASAHI KASEI KOGYO K.K. 28 May, 1969 [4 June, 1968], No. 26891/69. Headings C3P and C3R.  A composition comprises (a) a high molecular weight synthetic polymer, (b) at least 0À001 (preferably up to 10%) of a pyrimidine derivative of the formula where R 1  is hydrogen, hydroxyl, amino or C 1-18  alkyl, R 2  is hydrogen, C 1-18  alkyl or an unsubstituted or alkyl-, alkylene- or acetyl-substituted C 5-6  monosaccharide, R 3  is hydrogen or C 1-18  alkyl, R 4  is hydroxyl or amino; and when R 4  is hydroxyl, R 2  is not hydrogen, and optionally (c) a phenolic antioxidant and (d) a further nitrogen-containing compound. In the examples, (a) acetylated polyoxymethylene, oxymethylene-oxyethylene copolymer, polypropylene, polybutadiene, butadiene-styrene copolymer, vinyl chloride-vinylidene chloride copolymer, a polytetramethylene oxide-2,4-toluylenediisocyanate - methylene - bis - (4 - phenylisocyanate) polyurethane, nylon - 6 and polyethylene terephthalate, are stabilized with (b) cytidine, uridine, cytosine, thymidine, 6-hydroxy-, 6-amino- or 5-methyl-cytosine, 1-N- dodecyl- or 1-ethyl-5-methyl uracil, and (comparative) 5-amino cytidine and 5,6-diamino uridine, (c) 2,2<SP>1</SP>-methylene-bis-(4-methyl-6-tbutylphenol), 4,4<SP>1</SP>-butylidene bis-(3-methyl-6- t-butylphenolformate), and 1,1 ,3-tris-(2-methyl- 4 - hydroxy - 5 - t - butylphenyl) butane, (d) polyaminotriazole (from sebacic acid dihydrazide), urea-adipic acid dihydrazide-hexamethylene diamine condensate, dicyandiamide, caprolactam-caprolactone copolymer (prepared in the presence of MgBr 2  and N-acetyl caprolactam), and sebacic acid dihydrazide-hexamethylene diamine-urea condensate (preparation described), while in Example 22 conventional vulcanization ingredients are also added to the butadiene polymers, and in Example 23 t-butyl phenyl salicylate and di-N-butyl tin dilaurate are also added to the vinyl chloride copolymer.
Patent GB-382391-A (GB)
Title: Improvements in or relating to methods of eliminating stray capacities in electricalapparatus such as is used in telephony
IPC: H04B3/34
Filed: 1931-09-28
Abstract: 382,391. Transformers. TELEPHONAPPARAT-FABRIK E. ZWIETUSCH & CO. GES., 6, Salzufer, Charlottenburg, Berlin. Sept. 28, 1931, No. 26957. Convention date, Oct. 20, 1930. [Class 38 (ii).] The capacities Ck, Cg between the windings and the core and pot of transformers are balanced by connecting the core and pot together directly and through equalizing condensers C1 .. C4 to the windings.
Patent GB-505357-A (GB)
Title: Improvements in and relating to the production of cement and the like
IPC: C04B14/02
Filed: 1937-10-05
Abstract: 505,357. Grinding cements. POLLAK, J. E. (Binney & Smith Co.) Oct. 5, 1937, No. 27010. [Class 59] [Also in Group V] A process for the manufacture of hydraulic cement comprises the addition of between À05 to À5 per cent by weight of finely divided dry carbon black to the raw cement clinker before or during grinding. The carbon black may be of, the kind produced by the known impingement process having a particle size of about 60 millicrons and is used in the dry state as a powder or in the form of pellets such as those described in Specification 327,979 [Class 90]. About À08-À33 per cent of the carbon black is added to the cement and acts as a dispersing agent serving to make the cement particles more available for hydration. It is stated in the Provisional Specification that the carbon black may be added to the cement after grinding. Specification 431,680, [Group V], also is referred to.
Patent GB-242290-A (GB)
Title: Improvements in or relating to electric accumulators
IPC: H01M50/466
Filed: 1925-10-28
Abstract: 242,290. L³beck, C. H. O. Oct. 31, 1924, [Convention date]. Cells; electrodes; connections.-In batteries with alkaline electrolytes and with electrodes of elongated cross-section and comprising active masses between perforated sheet metal plates, deformation of the electrodes due to swelling of the active material is prevented by surrounding a group of positive and negative electrodes by a rectangular sleeve, the end walls g<1>, Fig. 1, of which parallel to the electrodes are rigid to resist bending strain and take up the internal pressure through insulating members m between the electrodes at the points at which the electrodes swell, the side walls of the sleeve being less rigid and of thin sheet metal sufficient to resist the mere tensile strain. The electrodes may be assembled in jigs and compressed before placing in the tightly fitting sleeve. The end walls g' may be of metal corrugated or ribbed for strengthening purposes or may be frameworks. The electrodes may be of concave and convex shape as shown, and the members m may be rods or parts of perforated sheets of ebonite &c. The side walls of the sleeve may be welded to the bent up ends of the walls g<1> and a cover or bottom may be welded on to form a complete cell or one or more sieeves with the electrodes may be inserted side by side or otherwise in an outer receptacle. Electrodes of the same polarity may be connected to the sleeve which then serves as a current conductor, and the sleeve mav be connected to the outer container. The spaces between the end walls g' of adjacent sleeves or between an end wall g<1> and the casing may accommodate leads. Fig. 4 shows a battery of two cells in which the adjacent side walls of the two sleeves bear against one another or are replaced by a common partition so that the electrodes are perpendicular to the partition, an equal distribution of current over the electrodes being ensured by a common connection k at the bottom between electrodes of different polarity and the terminals being arranged at the top.
Patent GB-195998-A (GB)
Title: Improvements in the production of pure alumina
IPC: C01F7/26
Filed: 1921-10-12
Abstract: Vessels used in the production of ammonium bisulphate by heating the sulphate are not attacked when made of aluminium, magnesium or silicon, alloys of these metals, or alloys thereof with heavy metals.ALSO:Pure alumina is precipitated by means of ammonia from the solution obtained by lixiviating aluminous material rendered soluble by fluxing with a bisulphate.  The latter is obtained by heating at normal or reduced pressure, in a separate operation ammonium sulphate or a double sulphate of ammonium and an alkali metal and the ammonia evolved is utilized in the subsequent precipitation of alumina.  The fluxing is effected under pressure and in the presence of a small quantity of water.  After the heat treatment the mass is extracted with water, and if the solution is sufficiently free from iron is precipitated directly by means of a large excess of ammonia.  When considerable quantities of iron are present, ammonium alum is formed by the addition of a saturated solution of ammonium sulphate and is separated by crystallization.  The crystals are washed with a solution of ammonium sulphate and are introduced into a solution containing a large excess of ammonia.  The ammonium sulphate present in the filtrate from the resulting alumina is recovered for re-use. The mother-liquor after separation of the alum may be used repeatedly for the formation of ammonium alum, the iron being removed when necessary by means of ammonia.  It is stated that vessels made of silicon, aluminium, magnesium or alloys of these metals or alloys thereof with heavy metals, are not attacked when used for the formation of the bi-sulphate.
Patent GB-140987-A (GB)
Title: Improvements in watches
IPC: G04B19/32
Filed: 1919-11-04
Abstract: 140,987. Depollier, C. L. Nov. 4, 1919. Glasses; dials; illuminating, means for.-In order that the luminous material may be entirely enclosed, watches are provided with two crystals or glasses d, f on the proximate face of one of which luminous figures, points &c. are painted as shown at d<2>. The glasses may be mounted as shown or both mounted on the bezel e and the luminous material may be painted on the upper glass to illuminate the dial b of the watch.
Patent GB-427101-A (GB)
Title: Improvements in or relating to metal milling machines
IPC: B23P15/32
Filed: 1933-10-03
Abstract: 427,101. Hot - milling machines. HOLMAN BROS., Ltd., Camborne, and RULE, J., 54, Hughville Street, Camborne, Cornwall. Oct. 3, 1933, No. 27204. [Classes 83 (ii) and 83 (iii)] In a machine for hot-milling the bits of rock drills the bit is guided to a milling - cutter by spaced guides so that its movements are constrained to those required for sharpening the cutting-edges and/or sizing the head of the bit. The hollow frame 11 encloses an electric motor 12 controlled by a starter 14 and connected by a belt enclosed within guards 20, 21 to a pulley on a main shaft 17 which is carried in bearings 16. The outer ends of the main shaft are connected to milling-spindles carrying cutters 18 each of which is fitted with shields 23, 24. A pair of brackets 25 project from the frame on the same side as the motor-starter 14 and each bracket is fitted with a pair of work rests 27, 28. The rest 27 comprises a base 29 adjustable along the bracket 25 and adapted to receive a vertically-adjustable member 33 which terminates in a horizontal arm 34 along which two V-rests 39, located at different levels, are adjustably secured. The rests 28 are similarly provided in pairs along a horizontal arm 41 connected to the frame by a plate 42. A member 44 secured to the frame carries a stop 46 adapted to engage the end of a drill during the sharpening operation. The member 44 also carries an adjustable centre 49 which may engage in the hollow stem of a drill placed on the upper pair of rests. In operation a drill 50, Fig. 2, is first placed on the lower pair of rests and pushed endwise up to the cutter which sharpens two adjacent edges of a cruciform drill bit by entering the V-shaped space between such edges. This movement is continued until the drill encounters the stop 46, whereupon the next pair of adjacent edges are milled, the temperature of the bit being maintained at or above forging heat. The drill is then transferred to the upper pair of rests so that the conical member 49 engages in the bore of the drill. During this operation the bit is rotated until each cutting edge has passed the cutter to obtain the finished size of drill bit.
Patent GB-1279790-A (GB)
Title: Separator for separating a liquid from a mixture of the liquid and a compressible fluid
IPC: B01D45/12
Filed: 1971-04-19
Abstract: 1279790 Centrifugal separator GUTEHOFFNUNGSHUTTE STERKRADE AG 19 April 1971 [14 Feb 1970] 27210/71 Heading B2P A steam-liquid centrifugal separator comprises an ascending duct 1 through which the steam-liquid mixture is introduced, the duct being closed at the top, e.g. by a partition 2, and being fitted at its top end portion with a ring of vanes 3 extending generally outwardly from its peripheral surface, the duct and vanes being surrounded by a collector casing 6, pairs of adjacent vanes 9 being joined together at their outer and inner edges to present a continuous outer surface and to define verticallyextending steam passages to provide communication between the space within the casing 6 below the vanes and a steam extractor pipe 5 fitted above the vanes. Single vanes 10 are provided between the pairs of joined vanes to provide radial passages 4, these passages being closed at their top and bottom. The lower end portion of the casing is provided with a liquidseal trap 7 and at its upper edge is provided an annular baffle plate 8 having a curved portion. In operation, the steam-liquid mixture fed through the duct 1 escapes through the passages 4 in the ring of vanes being thereby imparted with rotary motion so that part of the liquid is separated out on the inner wall of the casing 6 and rises to the upper edge. thereof where it is removed by the baffle 8. The remainder of the liquid is removed below via the liquid-seal trap. The bulk of the steam separated from the liquid is led away from the casing at the top. Any steam entrained by the liquid below the ring of vanes 3 escapes via the vertical passages provided between the joined vanes 9 into the pipe 5. Liquid particles in the steam ascending through the pipe 5 separate out by gravity and is removed from the dished upper surface of the partition 2 through a drain pipe 11.
Patent GB-495228-A (GB)
Title: Mechanism for applying patches to envelope blanks and the like
IPC: B31B19/00
Filed: 1937-10-07
Abstract: 495,228. Affixing sheets by adhesives. SMITHE MACHINE CO., Inc., F. L. Oct. 7, 1937, No. 27252. Convention date, Oct. 20, 1936. [Class 73] [Also in Group XVII] In a mechanism for applying patches to envelope blanks &c., patches whose surfaces are adapted to be rendered tacky by heat are applied to the moving blanks by a pressure rotor containing patch-heating and patchholding devices, the patched blanks being then stored or forwarded for further operations thereon. A web S of patch-forming material, bearing on one side a heat-tacky coating, is fed by rolls 21, 22 along a stationary shear 24x, a patch length being severed therefrom by a cam-operated shear 24. This patch is taken up by suction on to a block 36 of a rotor R<1>, the speed of rotation of the block being governed by a cam-groove and toggle lever system so that there is a dwell in the rotation of the block 36 while the patch is severed from the strip S and taken up by the rotor R<1> The block 36 is now rotated at accelerated speed until the block 45 on the rotor R<1> coacts therewith to remove, by suction, the patch therefrom. The rotor R<11> feeds the patch to one of the suction blocks H<1>, H<11>, H<3> on the rotor R, each block thereof being heated by electric heating elements 52. The patch W<1> is pressed on to the apertured envelope blank, fed therebeneath by rolls 16, 17, the counter-roll R<3> of the rotor R being apertured at 80 so that peripheral pressure only is exerted on the patch. The envelope blank, with patch applied, is fed away by rolls 18, 19. In a modification, the rotors R<1>, R<11> may be replaced by a single rotor, the suction block of which is rotated at variable speed by mechanism similar to that set forth for the rotor R<1> above, the substituted rotor feeding patches direct to the rotor R. The diameters of the rotors R<11>, R may be such that a patch is not fed to each of the blocks H<1> H<11>, H<3> in turn, but the rotor R may rotate through 240‹ before taking up the next patch. Specification 460,367, [Group XVII], is referred to.
Patent GB-479215-A (GB)
Title: Improvements in the manufacture of lead alloys
IPC: C22C11/00
Filed: 1936-10-08
Abstract: Extruded products are made from a lead alloy containing 0,001-0,25 per cent of tellurium and 0,03-0,1 per cent of copper, the products being extruded at temperatures equal to those customarily employed for extruding ordinary soft lead.  The products may be pipes or cable sheaths.  Specifications 414,606, 416,568, 444,938, and 473,911 are referred to.
Patent GB-836374-A (GB)
Title: Furnace and heat exchanger for heating gas
Inventor: DONNISON JAMES OLDAKER
IPC: F24H3/06
Filed: 1957-08-30
Abstract: 836,374. Air heating furnaces. WOODS OF COLCHESTER Ltd. Aug 29, 1958 [Aug. 30, 1957], No. 27412/57. Class 64(1) A gas heater comprises an elongated casing 11 within which is arranged a combustion chamber 44 preferably fired by an oil burner, and a heat exchanger comprising a zig-zag wall occupying the greater part of the space between the casing wall and a central baffle 16, the combustion gases passing out of the heat exchanger e.g. to an outlet connection 33, through radially extending passages 28 located in that part of the space not occupied by the zig-zag wall. In the form shown, the zig-zag wall is built of U-shaped steel sheets 14 welded together at their edges 17 the sheets together with the casing 11 and the central baffle 16 defining generally triangular passages 19 and 21 for the heating gases and gas to be heated respectively. The zig-zag wall may contact the central baffle and the casing but preferably, and as shown, is spaced from the baffle 16 by several narrow rings 18 and from the casing 11 by longitudinal extension of certain of the plates 14, e.g. as indicated at points 22. The passages 19 of the heat exchanger are closed at their ends by plates 23, 24 and heating gasses from the combustion chamber 44 are diverted into these passages by a transverse plate 25 which closes the end of the central baffle 16. After flowing through the passages 19 the heating gases pass into the space within the baffle 16 which is cut back at 27 to allow the gases to pass into the tubular passages 28. Baffles 35, 36 are provided in the passages 28 to prevent an undue proportion of the heating gases from passing direct to the flue 33. The gas to be heated flows through the passages 21 from left to right as viewed in Fig. 2 being propelled by a fan (not shown) mounted at either end of the casing 11. Regulation of temperature and output may be effected by employing a variable speed fan motor, by using a fan having blades of adjustable pitch, or by regulating the burner. A heat shield 49 may be provided around the combustion chamber. In a modification in which the shield 49 is omitted (Fig. 3, not shown), the heater is mounted in a secondary casing through which passes the gas to be heated whereby a proportion of this gas is heated in flowing over the outer surface of the casing 11.
Patent GB-444758-A (GB)
Title: Improvements in or relating to containers for fused material to be cast
IPC: B43K29/02
Filed: 1934-09-24
Abstract: 444,758. Casting ; tapping furnaces ; foundry ladles. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Sept. 24, 1934, No. 27429. Convention date, Oct. 21, 1933. [Class 83 (i)] [See also Groups II, V, and XII] A container for holding fused material to be delivered to a casting-mould through a closable aperture, has a drip-catching device which is movable to or from the outlet independently of the presence or absence of a casting or mould in the casting position. Material fused in a furnace 1 is delivered to an electrically heated chamber 3, which communicates with the container 6 by a channel 5. Heat is conducted through channels 7. A valve 9 is opened by a handle 11 to allow the flow of the material into a mould, the handle also moving a drip-catcher 17 from beneath the outlet by a rack-and-pinion 16, 15. The catcher 17 is returned upon closure of the valve 9. The parts may move independently. Specifications 381,790, 402,096, and 402,205 are referred to.