baber/WOPTO huggingface dataset:
Patent GB-592177-A (GB)
Title: Improvements in polarizing screens for use in road vehicles
IPC: F21S8/10
Filed: 1944-07-03
Abstract: 592,177. Polarizing - apparatus. MARKS, A. July 3, 1944, No. 12658. Convention date, May 5, 1943. [Classes 97 (i) and 98 (ii)] [Also in Group XXXII] In a polarizing sheet particularly for attachment to automobile windscreens to prevent glare, the polarization effectiveness varies gradually over the sheet, being greatest at the top and least at the bottom. As shown, the sheet 18 is of stretched polyvinyl butyral, impregnated with iodine by treatment with a solution containing propyl alcohol, iodine and hydrogen iodide, excess iodine being removed by a solution containing isopropyl ether, carbon tetrachloride and propyl. alcohol. The sheet mav also be treated to introduce silica therein, as described in Specification 591,943. To produce gradation of polarizating effect, a source of infra-red and ultra-violet light 25, Fig. 5, illuminates the polarizing sheet 22 through a light filter 24 of varying thickness, the rays, after passing through the filter, vaporize and remove iodine from the sheet in accordance with the thickness of the filter. Alternatively, a localised solvent such as the second solution referred to above may be used, the sheet being dipped therein at a controlled rate, or the sheet may be exposed to vapour comprising ethyl or methyl alcohol and carbon tetrachloride issuing from a curved slit under which the sheet travels at controlled speed. The sheet 18 may be flat or cylindrical and the areas of equal polarization may be circular arcs, Fig. 2, or straight lines. When mounted on windscreens 10, 11, Fig. 1, with its polarizing axis horizontal, it may be used in conjunction with headlamps 13 producing two beams 15, 16 polarized respectively vertically and horizontally, the latter being directed towards the ground and reaching the eye 21 through the lower part of the screen, the direct beam 15 being absorbed by the upper part of the screen.
Patent GB-149452-A (GB)
Title: Improvements in or relating to extracting and/or ejecting mechanism for firearms
IPC: F41A15/14
Filed: 1919-05-20
Abstract: 149,452. Payne, O. V., and Auto- Ordnance Corporation. May 20, 1919. Machine guns.-Relates to extracting and ejecting mechanism of the kind in which (1) the extractor is detachably secured to the breech-bolt by means of a dovetail connexion and a spring catch; and (2) the ejector is threaded through an opening in the receiver. According to the invention (1) the dovetail connexion for the extractor is disposed in the rear of the spring catch, and is arranged transversely of the bolt, and (2) the ejector has a spring arm adapted to interlock with the face of the receiver. The invention is shown as applied to the automatic gun described in Specifications 148,022, 148,023, and 149,451. [Class 119, Small-arms]. The extractor E has a springy extension 21 adapted to dovetail into a groove 24 in the breech-bolt 4, and is held in position by the engagement of a lug 27 with a recess 28 in the bolt. The ejector E<1> comprises a screw-pin carrying an inclined projection 34 and a spring plate 31 studded at 33; it is adapted to be screwed into the receiver R so that the end 34 projects into a longitudinal slot in the breech-bolt 4, and is held in position by the engagement of the stud 33 with a. recess in the face 19 of the receiver R.
Patent GB-1447218-A (GB)
Title: Phenoxyalkanol derivatives and a process for their preparation
IPC: C07C43/225
Filed: 1975-03-26
Abstract: 1447218 Phenoxy alkanols and esters thereof MERCK PATENT GmbH 26 March 1975 [2 April 1974] 12745/75 Heading C2C Novel compounds I: wherein R<SP>1</SP> is H or CH 3 ; R<SP>2</SP> is CH 3  or C 6 H 5 ; R<SP>3</SP> is 4-halo-phenoxymethyl, 1,2,3,4-tetrahydro-1- naphthyl, 1-pyrryl, piperidino, isoindolino, 1,2,3,4-tetrahydroquinolino, 1,2,3,4-tetrahydro- 1 - R<SP>5</SP> - 4 - quinolyl, 4 - chromanyl, 4 - thiochromanyl, or, if R<SP>1</SP> and R<SP>2</SP> are not both CH 3 , R<SP>3</SP> may also be hal, phenyl, 4-hal-phenyl or 4- hal-phenoxy; R<SP>4</SP> is H or alkanoyl with 2 to 4 carbon atoms; R<SP>5</SP> is H or CH 3  and hal is F, Cl or Br; and their physiologically acceptable acid addition salts, are prepared by (i) reacting a phenol II: (which may be partly or wholly in the form of a phenolate) with a compound of formula X-CR<SP>1</SP>R<SP>2</SP>-CH 2 OR<SP>4</SP> in which X is Cl, Br, I, OH or an esterified OH group provided that when X is OH, R<SP>4</SP> is alkanoyl with 2 to 4 carbon atoms, to form a compound of Formula I, or (ii) reducing a compound of Formula IV: wherein Y is a free or functionally modified COOH group, a free or functionally modified CHO group, or a CH 2 OCH 2 C 6 H 5  group, to form a compound of Formula I, or (iii) treating a compound of Formula IV above wherein Y is a CH 2  hal group or an esterified or etherified CH 2 OH group, with a solvolysing agent, to form a compound of Formula I, or (iv) diazotizing a compound of Formula IV above wherein Y is an aminomethyl group, and reacting the resulting diazonium compound with a compound of formula R<SP>4</SP>-OH wherein R<SP>4</SP> has the abovestated meaning, to form a compound of Formula I, and, if desired, converting a compound I into another compound I by saponifying an alkanoyloxy group therein and/or esterifying a hydroxyl group therein. A resulting compound I may be reacted with an acid to form a physiologically acceptable acid addition salt. Pharmaceutical compositions for oral, parenteral or topical administration comprise a compound of the invention together with a pharmaceutical carrier. The compositions are useful for lowering cholesterol, triglyceride and uric acid levels and for inducing liver enzymes.
Patent GB-201267-A (GB)
Title: Improvements in bi-polar electrode electrolysers
IPC: C25B9/17
Filed: 1922-05-05
Abstract: 201,267. Mather & Platt, Ltd., Barclay, S. F., and Mellor, H. E. May 5, 1922. Cells; electrolytes, circulating; hypochlorites, obtaining.-A bi-polar electrode apparatus having separate cells d arranged so that electrolyte can circulate therethrough from a common outer container e, is provided with insulating partitions f dividing the outer container into compartments so as to reduce leakage current through the main body of electrolyte. As shown, the electrodes a form the sides of the cells and are inserted in channel-shaped insulating frames b of ebonite, glass, &c., having perforations c at the bottom for entrance of electrolyte. End electrodes in adjacent compartments are electrically connected so that all the electrodes are in series. Brine is poured into the container to about half an inch below the tops of the cells, over which the electrolyte streams by reason of gas evolution. According to the Provisional Specification, the divided container may 'be replaced by a series of separate containers.
Patent GB-589963-A (GB)
Title: Improvements in or relating to safety control systems for heating apparatus
IPC: F23N5/14
Filed: 1944-07-05
Abstract: 589,963. Gas burners. MAY, P. (Robertshaw Thermostat Co.). July 5. 1944, No. 12820. [Class 75 (i)] [Also in Group XXIX] The manual or thermostatic opening of a valve 16 allows gas to pass to a pilot burner 12 and completes the secondary circuit of a mains energized transformer 22 through a ballast resistor 34 to a flame sensitive resistance element 28 adjacent the pilot burner 12 and an electromagnet or solenoid operating a valve 18 controlling the gas supply to the main burner 10, the element 28 and the solenoid being arranged in parallel and the current passing through the solenoid being insufficient to open the valve 18 while the element 28 is cold. The burner 12 may then be ignited and after about a minute a switch 38 arranged with a constant resistance in parallel with the resistor 34 is closed, the consequent increased current through the solenoid opening the valve 18. The switch 38 is then released to open position, and so long as the element 28 is heated the valve 18 remains open. Variations in line voltage to the transformer 22 are compensated for by variations in the resistance of the resistor 34 to render constant the release time of the solenoid actuated valve 18 if the pilot burner is extinguished, A fuse 44 protects the solenoid coil if the circuit of the element 28 fails..Specification 572,130 is referred to.
Patent GB-713893-A (GB)
Title: Indexing of the turrets of capstan lathes
Inventor: LLOYD ARTHUR HAROLD
IPC: B23Q16/06
Filed: 1952-05-21
Abstract: 713,893. Turret lathes. HERBERT, Ltd., A. March 18, 1953 [May 21, 1952], No. 12822/52. Class 83 (3) A furret lathe comprises two fluid-responsive devices which are automatically supplied with fluid-pressure by the withdrawal movement of the turret slide, one of the devices effecting the withdrawal of the turret locating-bolt and the other effecting the angular movement of the turret. The turret 11, Fig. 4, carried on a slide which may be moved by a hand lever through rack and pinion gearing, carries a locking ring 21 with notches engaged in turn by a spring-pressed plunger 23. The plunger is withdrawn prior to indexing of the turret by a double rack and pinion mechanism 45-48 operated by an air cylinder 38. Ratchet mechanism for indexing the turret comprises an air cylinder 34, Fig. 3, pivoted at 76 to a vertical pillar at the rear end of the machine. A piston rod 33 is pressed to the left by a spring 35 and is pivotaliy connected at its extreme end to a triangular plate 30 which pivots about the turret axis and carries a pawl 28 rotatable about a pin 29. The pawl is spring-pressed into engagement with a ratchet wheel 27 secured to the turret spindle so that when the piston rod 33 is moved to the right by air pressure the turret is indexed one notch of the ratchet wheel. Actuation. Cam plates 16, 17, Fig. 4, are adjustably secured to the turret slide and engage through levers 62, 63, valves 64, 65 on the retraction and forward movement of the turret slide respectively. When valve 64 is operated air is supplied to the L.H. end of cylinder 38 and through a pivoted latch 50 engaged by an enlargement 51 of the end of piston rod 52, the locking plunger 23 is withdrawn from the turret. Immediately following this operation air pressure is also applied through line 69 to the L.H. end of cylinder 34 which operates the indexing mechanism, piston rod 33 is moved to the right and a cam 60 secured thereon engages a projection 59 on a bell crank lever 58 which, through further linkage and a plunger 54, presses on the upper surface of latch 50 and thus releases the plunger 23. The latter bears on the periphery of the ring 21 until the indexing is complete and it comes opposite the next locking notch. Operation of valve 65 restores the air pistons to their initial position ready for the next indexing.
Patent GB-730080-A (GB)
Title: Tunable co-axial line resonator
IPC: H01P7/04
Filed: 1953-05-08
Abstract: 730,080. Coaxial resonators. STANDARD TELEPHONES & CABLES, Ltd. May 8, 1953 [Aug. 9, 1962], No. 12912/63. Class 40 (8). The inductance of a tunable coaxial resonator 1 is varied by moving a sleeve 9 over inductive grooves 8 in the inner conductor 2, thereby shorting a certain number of the grooves. The capacitance of the resonator may also be varied by axial movement of a conductive cap 4 which makes contact with the outer conductor by means of wiper strips 5.
Patent GB-849330-A (GB)
Title: Improvements in or relating to motion picture projectors
IPC: G03B19/18
Filed: 1959-04-16
Abstract: 849,330. Kinematograph apparatus. KODAK Ltd. April 16, 1959 [April 16, 1958], No. 12921/59. Class 97(1) A motion picture projector includes a friction clutch, comprising driving and driven members yieldably connected together, for driving a shaft for supporting a film reel, and a drive reversing mechanism, which is selectively operable to occupy either of two positions, in one of which the mechanism is adapted to drive the driving member of the clutch in one direction so as through the driven member of the clutch to effect rotation of the shaft and reel for driving film connected to the latter through the film gate of the projector for projection, and in the other of which the mechanism is adapted to drive the driven member of the clutch in the opposite direction to effect reverse rotation of the shaft for rewinding the film onto a film reel positioned on said shaft. As shown, drive from motor 29 to rotate clockwise the take-up spool shaft 40 is transmitted during projection by way of belt 28, pulley 26, integral gear 16, and the friction clutch comprising a driving gear 30 rotatably mounted on shaft 40 and urged by spring 36 into contact with the driven gear 32 on the shaft 40. Pulley 26 and gear 16 are carried by disc 10 which is pivotable about stub shaft 12 and is maintained in either of two angular positions as shown in Figs. 2 and 5, by a toggle spring 15. When drive selector knob 54 is moved to the #off" position, cut away portion 53 of cam 52 rotates allowing motor switch 56 to open, and lever 46 moves a short distance to the right. For rewinding, the filled take-up spool is placed on the supply spool shaft and an empty rewind spool is placed on the shaft 40, the film being led directly between the spools so as to be rewound on the empty spool by anti-clockwise rotation thereof. When knob 54 is moved to the "rewind" position (Fig. 5), switch 56 is again closed, and lever 46 is moved further to the right causing disc 10 to pivot into its alternative position, due to engagement of pin 42 by the end of slot 44. Thus drive from the motor is transmitted to the shaft 40 which now carries the rewind spool, by way of belt 28, pulley 26, integral gear 24, idler gear 20 carried by disc 10, and gear 32.
Patent GB-444050-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H03F3/28
Filed: 1935-05-01
Abstract: 444,050. Wireless transmitting systems; valve amplifying circuits. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. May 1, 1935, Nos. 12962 and 12963. Convention dates, May 2, 1934 and July 20, 1934. [Class 40 (v)] With the object of increasing the ratio of power output to power supplied in a radiotransmitting amplifier, or in a push-pull audiofrequency amplifier, the anode supply voltage and the grid bias are automatically regulated according to the momentary strength of the audio signal. The transmitting-amplifier E, Fig. 7, is fed with modulated carrier from the preceding stages T, and its anode circuit is supplied from mains N through a grid-controlled rectifier G and smoothing-circuit S. The microphone M, which effects modulation of the carrier by means not shown, is connected on the one hand to a device A which regulates the gridexcitation of the supply rectifier G, and on the other hand through a full-wave rectifier B and smoother K to a resistance 1, 2 in the grid circuit of the valve E. The result is that the anode supply voltage rises as the signal strength rises, and at the same time the negative grid bias is increased so that the valve E continues to operate at the bottom of the rising part of its characteristic. It is arranged that the anode voltage rises from one half to its full value as the modulation rises from zero to 100 per cent. The supply rectifier G may be replaced by a dynamo or other regulatable source. When the invention is applied to a floating-carrier system of the kind described in Specification 363,480, the variable grid-biassing device B, K may be so modified that the carrier amplitude is reduced when the signals are weak and the anode supply voltage is low. Fig. 12 shows a push-pull Class B audio-frequency amplifier utilizing the same principle as the transmitting amplifier of Fig. 7. Part of the input to the valves R is diverted to an amplifier V and on the one hand regulates the anode voltage by operating through a rectifier G2 on a gridcontrolled supply rectifier GL, and on the other hand regulates the grid bias through a rectifier G1. A non-linear amplifier N compensates for the curvature of the valve characteristics.
Patent GB-542945-A (GB)
Title: Improvements in electric storage water heaters
IPC: F24H1/20
Filed: 1940-08-14
Abstract: 542,945. Hot-water supply systems. KNOX, D. B., and WALTERS, W. L. Aug. 14, 1940, No. 13006. Convention date, Aug. 9, 1939. [Class 64 (i)] Water supplied from a cold main 12 to the bottom of a storage chamber where it is heated by an immersion heater 15 is discharged under pressure into a chamber 18 in which the heated water is mixed with cold water taken directly from the main through a pipe 20. A thermostat 16 cuts off the current supply to the heater when the water is at a predetermined high temperature, and water is discharged through a relief valve 24 when the pressure becomes excessive.
Patent GB-201660-A (GB)
Title: Improvements in sound amplifiers for acoustic apparatus
IPC: G10K11/08
Filed: 1922-05-09
Abstract: 201,660. Telegraphie Ges. System Stille, and Stille, C. May 9, 1922. Pneumatic relay sound-boxes. - A pneumatic sound-amplifying device for phonograph soundboxes, telephones, and like acoustic apparatus comprises two superposed valve plates a, m having in their central portions staggered apertures, one plate a serving as a support for the other m, which is clamped peripherally and acts as a diaphragm. When the diaphragm m is vibrated, either by means of a stylus coacting with a sound record or electromagnetically, as in the construction shown, compressed air escapes through the valve apertures as the plates are intermittently separated. The apparatus shown comprises a box-magnet ! l through which the air passes from an inlet p to the valve plates. The central pole of the magnet is surrounded by a coil q which receives current impulses. A movable portion k of the core is connected to the diaphragm m. A damping ring d of rubber or the like rests on the diaphragm.
Patent GB-131224-A (GB)
IPC: E05C3/14
Abstract: 131,224. Parkes, S. R. Dec. 18, 1918. Latches, lift and thumb.-The pivoted latch 3 can be locked in the fastening position by a sliding member 18 mounted on the latch and adapted to engage a slot 19 in the keeper 14. The slot 19 is cut in the centre of the keeper to allow the latch to be used on right and left handed doors.
Patent GB-128993-A (GB)
Title: Improvements in the Manufacture of the Fuselage, Wings, Struts and the like of Aircraft.
Inventor: WARREN ARTHUR OWEN
IPC: B64C3/18
Filed: 1917-09-13
Abstract: 128,993. Warren, A. O., Prior, W., and Prior, E. G. Sept. 13, 1917. Framework.-The fuselage, wings, struts, &c. of aircraft are built up of a number of frames b arranged side by side and connected together and to the longitudinal members a. The frames are of substantially triangular form and are of laminated construction, Fig. 6, formed by winding the laminations on a former and binding them together. Fig. 1 shows the side of a fuselage; similar frames are provided at the top and bottom of the fuselage. The frames may be secured to the longerons by adhesive and wrappings, and the contacting faces may be bevelled, Fig. 4. Struts f, Fig. 2, may be secured to the sides of adjoining frames.
Patent GB-290612-A (GB)
Title: Improvements in pumps with deformable diaphragms
IPC: F04B43/02
Filed: 1928-05-04
Abstract: 290,612. Farman, H., and Farman, M., (trading as Farman, H. et M.). May 17, 1927, [Convention date]. Cam, lever, and spring-actuated pumps; diaphragm pumps.-In a diaphragm pump the diaphragms Dare actuated on the suction stroke by cams R and levers L engaging flanged members G, G<1>, and on the delivery stroke by springs F. A pipe may be arranged in the chamber C of the actuating mechanism to draw off liquid if one of the diaphragms breaks.
Patent GB-132367-A (GB)
IPC: B64C3/18
Abstract: 132,367. Birmingham Guild, Ltd., and Roberts, C. A. L. Sept. 19, 1918. Framework.-Struts or other streamline members of aircraft are formed of sheet metal 2 bent to shape and welded together at its edges 3, internal webs 4, lightened by holes, being secured as shown. In a modification, one web acts also as a distance-piece for the other web.
Patent GB-132540-A (GB)
IPC: F42B22/10
Abstract: 132,540. Riley, G. B., Sherman, C. C., and Mock, H. O. May 8, 1916. Mines, marine.-Relates to mines of the kind provided with means for securing the mine to an automatic anchor, and consists in the use, for this purpose, of one or more bands which embrace the mine to a more or less degree. In the form shown in Fig. 1, one band 9 is used, and is passed around the mine 1 and secured at its ends to the anchor 2. Both ends of the band may be releasable; preferablv, however, one end is attached to a tensioning-screw 10, and the other is hooked on to a pivoted slip catch 12, which is held in place by a bell-crank lever 13, until this is rocked bv a link 15 when the usual pawl 6 is pulled by a plummet 7, or the bell-crank lever is rocked directly by a line 17 connecting it to the plummet 7 or to the plummet line 8, or to a separate weight. In a modification, the plummet line is wound round a small drum which it rotates in falling, and this rotation moves a nut along a screw-threaded part of the drum spindle to release the slip catch. In the form shown in Fig. 3, the slip catch comprises a fixed part 21 and a pivoted part 20, which are held together by a cap 22 connected by a line 23 to the plummet 7. The plummet, in this case, is hollow for holding the plummet line and is attached to a releasing- device as described in Specification 125,166. This plummet may be constructed like the anchor described in Specification 125,085. The slip catch 24, Fig. 4, has a pivoted hook 26 held by a trigger 27 connected by a line 31 to the plummet, a coupling 28, 29 with a shear wire 30 being interposed to disconnect the line by the shearing of the wire after the trigger has been pulled. In a modification of this, Fig. 5, the line 31 is connected directly to the end 27<1> of the trigger by a ring 33, which is held in place by a fixed hook 32 until the trigger is pulled. In other modifications, the band is released by a hydrostatic device, a clock-work, or a dash-pot, either directly or through the intermediary of link-work and slip catches.
Patent GB-133012-A (GB)
Abstract: 133,012. Farbenfabriken vorm. F. Bayer & Co. July 25, 1916, [Convention date]. Monoazo dyes are obtained by coupling the diazo compounds of 5-nitro-2-aminobenzene-1 - carboxylic amides (in which the two amide hydrogens are replaced bv alkyl, aryl, or aralkyl groups) with sulphonic acids of #-naphthylamine or its substitution products (other than 2-alkylamino- or 2-arylamino-8-naphthol-6-sulphonic acids). Products are specified from the following pairs of components: 5-nitro-2- aminobenzene-1-carboxylic ethylanilide and 2- aminonaphthalene-6-sulphonic acid, 2-methylaminonaphthalene-5-sulphonic acid, 2-methylaminonaphthalene-7-sulphonic acid, or 2 : 8 : 6- aminonaphthol sulphonic acid; 5-nitro-2- aminobenzene-1-carborylic methylanilide and 2 -methylaminonaphthaiene -7-sulphonic acid; 5-nitro-2-aminobenzene-1-carboxylic dimethylamide and 2-p-xylylaminonaphthalene-6- sulphonic acid; 5-nitro-2-aminobenzene-1- carboxylic piperidide and 2-methylaminonaphthalene-7-sulphonic acid or 2 : 8 : 6-aminonaphthol sulphonic acid; 5-nitro-2-aminobenzene - 1-carboxylic ethyl-o-toluidide is also specified as diazo component. The products dye wool red to violet shades in acid baths. The Specification as open to inspection under Sect. 91 (3) (a) describes also the dye from diazotized 5-nitro-2-aminobenzene-1-carboxylic dimethylamide and 2-p-tolylamino-8-naphthol- 6-sulphonic acid. This subject-matter does not appear in the Specification as accepted. 5 - Nitro - 2 - aminobenzene - 1 - carboxlic amides.-The parent substances described above are obtained by treating nitroisatoic acid with secondary amines. 2-Alkyl- or 2-aryl-aminonaphthalene sulphonic acids, used as second components in the above process, are prepared by treating #-naphthol sulphonic acids with alkylamines or arylamines and sulphites, as described in Specifications 1387/00 and 18726/00.