baber/WOPTO huggingface dataset:
Patent GB-1223795-A (GB)
Title: Improvements in or relating to photographic flash-light units
IPC: G03B15/06
Filed: 1969-04-01
Abstract: 1,223,795. Flash units. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 1, 1969 [April 4, 1968], No.16966/69. Heading G2A. In a stepwise rotatable multi-flash unit of the kind having a plurality of flashbulbs, each with an associated reflector, grouped around the axis of rotation of the unit, means for coupling the unit to a camera and electric leads for the flash-bulbs near the coupling means, the bulbs are arranged in at least two series such that the unit can be secured in a first coupling position suitable for flashing all the bulbs of a first series, and then in a second coupling position suitable for flashing all the bulbs of a second series, and so on. In a first embodiment (Fig.4), two series, each of four bulbs, are provided. The first series of bulbs 11, 13, 15, 17 are supported by a plate (5) Figs.1 2 (not shown) having a star-shaped coupling member (35) with four aligning cams. The second series of bulbs 19, 21, 23, 25 are supported by a plate (3) so that their tops point in the opposite direction to those of the first series. The second plate (3) has a star-shaped coupling member (33) with four cams offset by 45 degrees with respect to those of the first plate (5). The jacket (1) of the unit may have a blue colour filter therein. In use the unit is first secured to a camera by means of the first member (35) so that the bulbs of the first series are successively flashed on rotation of the first member (35) through 90 degrees after each firing. After four firings the unit is removed, inverted and resecured using the second member (33). In a second embodiment, (Fig. 6), there are again provided two series of bulbs, each series mounted on a different plate, but in this case the bulb tops 40 face each other while separated by a wall section 38. In this case the aligning cams are not relatively offset. In a further embodiment Figs.7-10 (not shown), two series of bulbs are mounted on the same plate (39), bulbs of each series being arranged alternately. After firing the bulbs of the first series, the coupling member (65) is rotated through 45 degrees relative to the plate so as to be positioned for firing the second series. Alternatively, the member may have two sets of cams, the bottom set of which is broken off after firing the first series.
Patent GB-683840-A (GB)
Title: Improvements in intensifiers for hydraulic press operation
IPC: F15B3/00
Filed: 1950-07-07
Abstract: 683,840. Hydraulic intensifiers. QUINN, C. M. July 7, 1950 [July 14, 1949], No. 17007/50. Class 69 (ii). A pressure intensifier for a hydraulic press 19 comprises a closed casing 5 of relatively large crosssectional area, a cylinder 9 of relatively small crosssectional area extending from an end of the casing and containing press-operating liquid, a resilient expandable member 12 secured to the opposite end of the casing and forming therewith an elastically expansible chamber 12a within the casing connectible with a low-pressure compressed air supply 15a controlled by a three-way cock 16, a stepped piston 22 slidable within the casing and carrying a ram 23 fitting the cylinder 9, an elastically expansible member 11 engaging the slidable piston 22 and spaced from the resilient member 12 to form a receptacle 13 for press operating liquid, and pipes 17, 27 controlled by non-return valves 21, 29, 33, 37, and a manuallyoperable valve 32, which is coupled to the valve 16, connecting the receptacle 13 and cylinder 9 with each other and with the cylinder 38 of the press. The members 11, 12 are of hollow dished formation, the member 12 being of less depth than the member 11 and are formed with marginal rims 14, 15 which are clamped between the casing 5, a relatively thick ring 17a having apertures communicating with the pipes 17, 27, and an end cover 7.
Patent GB-635088-A (GB)
Title: Improvements in or relating to the production of organic acids
IPC: C07C51/21
Filed: 1947-06-27
Abstract: Organic acids are prepared by oxidizing carbonaceous material at elevated temperature and pressure with oxygen or an oxygen-containing gas in the presence of an aqueous alkaline solution to give a solution of alkaline salts of organic acids, treating this with a mineral acid to liberate the organic acids, extracting these with a solvent and removing the solvent.  The term "carbonaceous material" means coal, coke produced below 700 DEG  C., pitch, tar, charcoal and chars, carbon black, partially oxidized products of any of the foregoing, and humic acids.  The acids produced are aromatic acids such as mellitic, and benzene p  penta-, tetra-, tri-, and di-carboxylic acids, aliphatic acids such as oxalic and acetic acids, and complex acids of unknown structure.  Reaction conditions are in the range 200-325 DEG  C. and 400 to 2000 lb. p.s.i., for example 250 DEG  C. and 800 lb. p.s.i. The aqueous alkaline solution may be, e.g. a solution of sodium or potassium hydroxide or carbonate.  Methyl ethyl ketone is the preferred solvent for the extraction of the organic acids, which may be operated in a counter-current manner, but other ketones, esters, alcohols and ethers may be used.  The extraction should be performed above 32 DEG  C. when sulphuric acid is used for the mineral acid acidification.  In an example, powdered bituminous coal is mixed with aqueous caustic soda and treated with oxygen at 270 DEG  C. and 900 lb. p.s.i. for 2 hours.  The Specification as open to inspection under Sect. 91 specifies also lignin as a suitable carbonaceous material.  This subject-matter does not appear in the Specification as accepted.
Patent GB-497369-A (GB)
Title: Improvements in gramophones for playing endless-film records
IPC: G11B15/28
Filed: 1937-06-18
Abstract: 497,369. Gramophones. KONISHI, S. June 18, 1937, No. 17073. [Class 40 (ii)] Relates to gramophones for playing coiled endless-film records in which a positively driven feed-drum 13 arranged at an inclination to the reel 3b draws the film from the innermost and returns it to the outermost turn of the coil. According to the invention, the feed-drum partly projects into the interior of the reel, the upper part of the drum outside the reel serving to support the film at its point of engagement by the sound reproducer 41. The reel 3b is provided with rollers 7, 7a for supporting the film coils. Further, the reel and the shaft 10 carrying the drum 13 are carried by a cylindrical frame 3a supported on pivots 2 on a base 1 to permit of turning the reel into the horizontal plane to facilitate loading the reel. Within the frame 3a a synchronous motor 4 is flexibly supported on an elastic band 8. The shaft 9 of the motor drives the drum shaft 10 by a belt 14, and the shaft 10 is geared to a turntable 34 for playing disc records. The motor is given a starting torque by means of a handle 28 geared to a shaft 25 carrying a bell-crank lever 20 one arm of which is connected to a tension spring 43 the other arm being connected by a link 18 to a ratchet arm 21 engaging a toothed wheel 15 on the shaft 10. The bell crank lever 20 also carries a knife 30 engaging between the contact blades 31 of a starting switch for the motor. To stop the motor, the handle 28 is turned to rotate the lever 20 in clockwise direction, a pin 22 on the ratchet 21 then passing over a cam 24 and coming to rest in position 22b, Fig. 6, ready for starting the motor. This is effected by rotating the lever 20 in the anticlockwise direction, the pin 22 then passing beneath the cam 24 so that the ratchet engages the teeth of the wheel 15 under the action of the spring 43 when the arm 20<1> of the bell crank passes beyond the dead-centre position.
Patent GB-670358-A (GB)
Title: Improvements in or relating to calling arrangements for telecommunication systems
Inventor: EADES RAPHAEL ALWYN
IPC: H04Q1/44
Filed: 1946-06-28
Abstract: 670,358. Manual exchange systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 12, 1950 [June 28, 1946], No. 17130/49. Class 40 (iv). In a calling arrangement between two exchanges the line is provided with two tone sources of different frequency, one at each exchange, a tone in coming from either exchange being mixed with the locally-produced tone at the other exchange to provide the calling or supervisory signals. As shown, Fig. 1, tone from the two sources S2, S4 is normally connected to line over switches S1, S3 and received by demodulators 3, 7 which are also fed with the locally produced tones, to produce a difference frequency which holds a signalling device 5, 10 operated. When the operator throws switch S1 one of the frequencies is removed from the line so that the device 10 releases to call the operator. When the latter, on answering, operates S3, device 5 is released as a supervisory signal. In the detailed arrangement, Fig. 2, the tone source O is connected to a gating valve V1, whence it is fed to line over the hybrid transformer. The incoming tone is amplified at V2 and fed to valve V3 which mixes it with the tone from the local source O, the difference frequency being selected by the tuned transformer T and fed to a rectifier bridge R to hold the supervisory relay L. The outgoing tone is suppressed by the operation of relay A which closes the gate V1.
Patent GB-298101-A (GB)
Title: Manufacture of derivatives of the triarylmethane series
IPC: C09B11/20
Filed: 1927-06-29
Abstract: 298,101. Imray, O. Y., (I. G. Farbenindustrie Akt.-Ges.). June 29, 1927. Triarylmethane dyes.-Derivatives of the triarylmethame series are produced by combining a basic dyestuff of this series with an oxynaphthoic acid compound not containing a sulphonic group. The latter may contain two carboxylic groups, in which case it probably combines with two molecules of the dyestuff. 'The products are coloured powders having a metallic lustre. They are insoluble in water and soluble in spirit and are particularly suitable as printing colours Salts of the two components may be caused to react in aqueous solution, or a carbinol base of the triarylmethane series may be treated with free oxynaphthoic acid in alcoholic solution. In examples the following pairs of components are used : Fuchsine hydrochloride and sodium 2 : 3- hydroxynaphthoate, p-triaminodiphenyl-m-tolylcarbinol and 2 : 3-hydroxynaphthoic acid, Methyl violet and sodium 2 : 3-hydroxynaphthoate, Benzal green and sodium 2 : 6-naptholcarboxylate, Fuchsine hydrochloride and sodium 2:3:6- nap'htholdicarboxylate.
Patent GB-1503627-A (GB)
Title: Television video display apparatus
IPC: H04N9/72
Filed: 1976-04-28
Abstract: 1503627 Cathode-ray tube circuits THOMSONCSF 28 April 1976 [28 April 1975] 17346/76 Heading H4T In a video system, electron gun cathode current characteristics are stabilized by sampling and storing the measured value of the current during the blanking period of the display, at two test levels of input signal applied to terminal 31, the first being applied for D.C. component correction and the other applied either to correct the bias on the second "accelerating" grid of the gun or to correct the gain of the video signal. The first test level is at "black" video potential, applied via line 20 and gate 55 during three scan lines identified by counter 51 early in the blanked part of the frame scan: the level of gun 43 current measured across shunt 10 is stored in circuit 56. The second test level is at "white", applied via line 21 and gate 57 during three scan lines later in the blank interval, and the measured current is stored in circuit 58. In each case the only input to adder 41 is the appropriate test level. During the following display scan period the level stored on circuit 56 controls the D.C. level of the current of black level, and circuit 58 varies the gain via multiplier 59 to ensure that the current at full white is also correct. The multiplier 59 may be omitted and the white level signal taken via an amplifier to grid 2 of the gun (Fig. 1, not shown). Alternatively the controls may be commoned as in Fig. 2 but with the gun current taken to resistor 10 via one of a complementary series pair of transistors with commoned emitters, the control being to the common bases (Fig. 3, not shown). In a colour tube a separate circuit may be provided for each gun.
Patent GB-794208-A (GB)
Title: Improvements in or relating to work bench construction
IPC: B25H1/02
Filed: 1955-06-16
Abstract: 794,208. Work benches. WEST, P. J. C. Sept. 10, 1956 [June 16, 1955], No. 17399/55. Class 61. In a work bench having a horizontal surface 11 supported by legs 12, a storage space is provided in the form of a frame 13 containing shelves, trays, cupboards or the like supported for vertical movement between a retracted position in which the top of the frame lies adjacent the working surface 11 and a raised position in which the storage space extends above the level of the working surface. The retractable storage unit 13 is provided with runners or guides 25 which coact with runners or guides 26 on the bench structure. The weight of the frame is counterbalanced by weights 27 connected to each end of the unit 13 by wire connections 28 passing over pulleys 29, Fig. 3. Turn buttons 32 are provided to secure the unit 13 in the retracted position. This enables balancing weights to be used which overbalance the unit when empty. The unit 13 may be provided adjacent the back edge of the work surface 11, Fig. 1. When the bench is used in a corner between two walls the unit may be provided adjacent the side of the bench where it abuts the wall. Additional storage space may be provided in the form of a locker 14 pivotally mounted so that one of its walls forms a vertical side to the work bench when the locker is closed. The locker is counterbalanced and biased towards the closed position. Drawers 16 and shelves 19 are also provided. A section 21 of the working surface 11 may be hinged to be swung upwardly to provide access to shallow storage trays.
Patent GB-389331-A (GB)
Title: Improvements in the production of shaped rubber plates
Filed: 1932-06-20
Abstract: 389,331. Making goods from rubber &c. dispersions. ACCUMULATORENFABRIK AKT.-GES., 3, Askanischer Platz, Berlin. June 20, 1932, No. 17421. Convention date, June 20, 1931. [Class 70.] Apparatus for the production of plates having a patterned or profiled surface from rubber latex or similar dispersions comprises a shaped travelling band a passing under a feed tank c and a covering band g which, after coagulation of the latex on the foundation band, for instance by passing between hot plates, is fed over the coagulated latex, preferably in such manner as to exert pressure thereon, prior to the vulcanization. The latex may be compounded as in Specification 240,430, [Class 70, Indiarubber &c.], with solutions of magnesium or alkaline earth salts to give on vulcanization a microporous structure. Instead of a preformed band a, a smooth band which is shaped by passing between rollers before it reaches the feed tank may be used.
Patent GB-1042288-A (GB)
Title: Typewriter ribbon combination
IPC: B41J33/00
Filed: 1965-04-26
Abstract: 1,042,288. Ink-ribbons. INTERNATIONAL BUSINESS MACHINES CORPORATION. April 26, 1965 [June 5, 1964], No. 17462/65. Heading B6F. [Also in Division B8] A spooled " once only " polyethylene ink ribbon has secured to its outer end 3 a polyvinyl chloride leader 13 which continues the convolution of the ribbon, the inner surface of the leader having an adhesive area 32 connecting the outer end of the coiled assembly with the underlying turn to hold the spool in wound-up state. The adhesive area 32 is formed by a gap cut in the leader, the severed parts 24, 26 being held together by a strip 30 which is adhesive on both sides, one to fix the parts 24, 26 and the other, the outer surface, to attach the leader to a take-up spool. The area 32 is arranged to adhere either to a silvered strip 28 stuck on to the leader 13 or to an underlying coil of the leader itself. In the latter case the leader is made of polyethylene glycol terephthalate. Apparatus for making.-The leader 13 may be made by feeding webs 48, 50, 52 from spools to form the separate pieces 20, 28, 30, Figs. 5a, 5b (not shown). These webs are led over a web 40 of a width equal to the length of the leader. The adhesive on the webs 48, 50, 52 fixes them to the web 40 which is subsequently transversely cut to form the separate leaders. The area 32 is formed by longitudingly cutting a strip from the web 40 as it is led from its spool.
Patent GB-1347806-A (GB)
Title: Process for producing polyphenylene oxides
IPC: C08G65/44
Filed: 1972-04-14
Abstract: 1347806 Preparation of polyphenylene oxides MITSUBISHI GAS CHEMICAL CO Inc 14 April 1972 [14 April 1971 (2)] 17467/72 Heading C2C [Also in Division C3] Polyphenylene oxides are prepared by oxidizing a substituted phenol with oxygen or an oxygen-containing gas in the presence of a catalyst which includes a copper compound, e.g. cuprous cyanide, thiocyanate, iodide, sulphide, cupric sulphide, sulphate, nitrate and chloride, an iodine compound, e.g. an alkali metal iodide, ethyl iodide or iodine itself the copper compound and the iodine compound being optionally the same compound and a tertiary diamine which is capable of forming a stable chelate ring with the copper compound. Examples describe the preparation of poly (2,6-dimethyl- 1,4-phenylene) ether and poly(2-methyl-6-ethyl- 1,4-phenylene) ether.
Patent GB-1023042-A (GB)
Title: Improvements in or relating to pressure responsive apparatus
Inventor: CALVERT RAYMOND
IPC: G01L9/12
Filed: 1962-05-07
Abstract: 1,023,042. Determining liquid; measuring pressure. WAYNE KERR LABORATORIES Ltd. May 2,1963 [May 7, 1962], No. 17470/62. Heading G1N. In a U tube pressure measuring arrangement 12 Fig. 1 using a conductive fluid 13, the difference in heights of the two columns is determined by combining the signals from capacitative position sensing heads on the respective limbs, the sensing heads each comprising an electrode 15 and a screen 16, and alternating current being applied to the screen, and to either the electrode or the fluid to produce a position sensitive signal between the screen and either the fluid or the electrode respectively. The arrangement may be vibrated to prevent sticking, and the limbs may be of different cross-section. A null measuring arrangement in which the outputs from the head 30, 31 are opposed in a primary winding 41 of a transformer 42 to produce a difference signal and in which the difference signal is itself cancelled by adjustment of variable capacitor 37 is described with reference to Fig. 2, the variable capacitor setting being a measure of pressure. In a modified circuit Fig. 3 (not shown) the difference signal is measured by high-gain feed-back amplifier across the secondary winding and in a further modification described with reference to Fig. 4 (not shown) departure from a null condition is used to drive a null restoring servo which acts on a sequence of decade potentiometers, connected between the secondary of transformer 33 and the balancing capacitor which in this case is fixed. The electrode 15 may partly or completely surround the tube, and its vertical position may be adjustable. The screen may be of conductive glass to promote visual readings.
Patent GB-662295-A (GB)
Title: Improvements in and relating to voltage regulators
IPC: H02P9/14
Filed: 1949-07-01
Abstract: 662,295. Automatic voltage control systems. BRITISH THOMSON-HOUSTON CO., Ltd. July 1, 1949 [July 1, 1948], No. 17487/49. Class 38 (iv). A germanium rectifier is used as the voltage sensitive element in an A.C. voltage regulator. The output of an alternator 2, Fig. 1, driven by motor 1, is fed back to the control field 15 of the amplidyne exciter 3 by a variable ratio transformer and the germanium rectifier 12. If the voltage applied to the rectifier is less than its critical peak inverse voltage, the rectifier passes D.C. to the control field and the alternator voltage rises. On reaching the critical voltage the rectifier breaks down and passes A.C. to the field and the alternator voltage falls until the voltage applied to the rectifier is again below the critical value. In a modification, Fig. 2, the output of a booster transformer 22 connected between the unregulated input 20, 21, and the output 20a, 21, is controlled by a saturable reactor 24 in series with the transformer primary. The reactor is controlled by the current passed by the germanium rectifier 12 as above described. Specification 539,835 is referred to.
Patent GB-293565-A (GB)
Title: Improvements in or relating to pipe joints
IPC: F16L19/10
Filed: 1927-07-01
Abstract: 293,565. Lament, B. N. R. July 1, 1927. Joints with longitudinal pressure and with yielding outer part compressed. - A soft metal pipe 10, Fig. 5, is coupled to a socket member 11 by. first securing a collar 17, having a countersunk face 26, to the pipe end and thereafter expanding the pipe end within the collar and completing the joint in one operation by drawing the collar and pipe end over a tapered plug 21 engaging the member 11. The collar 17 is secured to the pipe by providing it with a reduced neck portion 18 which is deformed to grip the pipe under the action of. the coupling nut 14, which has a countersunk face 16 adapted to coact with the said neck portion 18, the pipe meanwhile abutting against the member 11, Fig. 2. The invention is also applicable to the jointing of two pipes, Fig. 8, the collars being compressed onto the pipes by the jointing flanges 27, 28, Fig. 7, which in a modification are replaced' by interengaging threaded sleeves.
Patent GB-900284-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B17/08
Filed: 1960-05-19
Abstract: 900,284. Photographic cameras. GAUTHIER G.m.b.H., ALFRED. May 19, 1960 [May 20, 1959], No. 17669/60. Class 98 (1). In a photographic camera including a camera shutter release mechanism and an exposure setting mechanism adjustable by hand or by means of a light-controlled driving device, a manually operable selector number is settable to an " automatic " position and a " non- automatic"  position and a locking device is associated with the shutter release mechanism and the selector number in such a manner that the shutter release mechanism is locked when the selector member is in a position intermediate the " automatic " and " non-automatic " position. As shown, selector ring 3 is adjustable to either an " automatic " position (cf. Fig. 2)- in which position the diaphragm for example is set by a driving mechanism to a value determined by an exposure meter-or to a " non- automatic " position, in which position the diaphragm may be set manually to values as indicated on a scale 5 by an index 4. A spring- urged latch 9 for the shutter master number 6 is provided with an extension 9d projecting through an aperture 1a in shutter housing wall 1 and ring 3 is provided with recesses 3a and 3b corresponding to the two positions " automatic " and " non-automatic," the arrangement being such that the shutter latch 9 can only be released by actuation of a spring-urged release lever 13 if either of recesses 3a or 3b registers with the opening 1a. Further, after an exposure and owing to the presence of extension 9d in one of the recesses 3a or 3b, the shutter must be re-cocked before the ring 3 can be moved to the other of its two positions. In a modification (Fig. 1, not shown), the extension which co-operates with the recesses 3a or 3b is formed as an extension of the lever 13, not of the lever 9. In this case the ring 3 may be moved from one of its positions to the other after exposure without the necessity for re-cocking first.