baber/WOPTO huggingface dataset:
Patent GB-931326-A (GB)
Title: Improvements in and relating to rotary actuators
IPC: F16H25/12
Filed: 1960-06-20
Abstract: 931,326. Ratchet gearing. LEDEX Inc. June 20, 1960 [June 19, 1959], No. 21536/60. Class 80 (3). [Also in Group XXIX] A fluid-operated actuator comprises a shaft 22 journalled for rotation in a housing 10 having a toroidal bladder means 34 forming an expansible chamber, and a mechanism 52, 62, 64 for converting an axial thrust resulting from expansion of the bladder into a rotary movement of the shaft. The bladder which has a normally open seam 36 closed by being clamped between parts 12, 14 of the housing, abuts a thrust plate 46 having a groove engaged by balls 54 in turn engaging a groove in a plate 52 splined to the shaft 22. The plate 52 is formed with arcuate inclined grooves 66 co-operating with balls 64 in similar grooves 68 in a plate 62 which engages a clutch disc 72 on the housing. The shaft is provided with a detent wheel 80 having notches engageable by a spring-pressed ball 82. When fluid pressure is supplied through a port 40 to the bladder, the plates 48, 52, 62 are urged to the right, the grooves 66, 68 acting through the balls 64 to apply a torque to the plates 52, 62 to rotate plate 52 and the shaft 22, plate 62 being held against rotation by the friction disc 72 and the wheel 80 rotated so that the ball 82 engages a different notch. Upon the release of fluid pressure, the plate 62 is disengaged from the friction disc and returned to its initial position relative to plate 52 by a spring 78, the ball 82 and wheel 80 maintaining the shaft in its new position. Repeated admissions of fluid-pressure to the bladder thus provide a step-by-step rotation of the shaft 22. Extrusion of the bladder past the thrust plate 46 is prevented by overlapping shims 48, 50, one closely fitting a sleeve on the shaft and the other closely fitting the inner surface of the housing. Two similar actuators plated back-to-back may be combined into a unit having a single shaft, fluid pressure supplied to one or other of the actuators rotating the shaft step-by-step in one direction or the other.
Patent GB-531507-A (GB)
Title: Improvements in exhaust silencers for internal combustion engines of aircraft or motor vehicles
IPC: F01N13/20
Filed: 1939-07-25
Abstract: 531,507. Exhaust-silencers. ELIOT, S. July 25, 1939, No. 21544. Convention date, June 28. [Class 7 (ii)] A device for silencing and assisting the discharge of the exhaust of aircraft or motorvehicle engines comprises an expansion chamber 3 arranged in the exhaust pipe 2, which then leads the gases to an inlet 11 of a casing 10 of wing-like form, having a narrow outlet 13 at the rear edge, so that the air-stream produces a suction effect to assist in withdrawing the exhaust. The pipe 2 enters part-way into the chamber 3 and is there formed with louvred openings. The passage through the casing 10 is formed by curved lateral walls 18, 19, between which and the edges of the casing mineral wool or other sound-deadening material is arranged.
Patent GB-780366-A (GB)
Title: Improvements in or relating to containers for lipstick and like cosmetics
Inventor: MATCHAN LEONARD JOSEPH
IPC: A45D40/06
Filed: 1955-07-26
Abstract: 780,366. Lipstick holders. WEBSTER, Ltd., E. Oct. 4, 1955 [July 26, 1955], No. 21551/55. Class 18. A screw feed type lipstick holder has both helical and axial slots open at the upper end to enable the cup and stick to be withdrawn and replaced, a notch being provided to one side of either slot to provide .an upper limiting stop for the cup 11 during normal use. The notch 23 may be at the junction of the helical slot 17 with a short axial portion or may be adjacent the upper end of the axial slot.
Patent GB-310453-A (GB)
Title: Improvements in joints for concrete and other pipes
IPC: F16L13/11
Filed: 1928-07-25
Abstract: 310,453. Hume Pipe Co. (South Africa), Ltd. April 26, 1928, [Convention date]. Joint-making packing. - Fluid-tightness between a pipe 3 and a collar or socket 4 on another pipe 2 &c. is secured by an interposed sealing ring 10 which is formed by rolling up a cylinder 10<a> of rubber &c. sheeting by relative sliding movement of the collar and the pipe 3. The cylinder 10a is positioned on the end of the pipe 3 before the pipe and collar are brought together, and the end 11 thereof is thickened preferably by folding it over a flexible band 12 in the form of a closely wound wire helix. The rubber sheet is also preferably tapered towards the end 11 so that the increase in diameter of the ring is proportional to the distance it rolls. The collar 4 is provided with an internal lip 8 which prevents the ring 10 from being forced out by the internal pressure, while the joint may be completed by bitumen 13, 15 inserted between the collar and pipe. Specifications 310,452, 310,454, 310,455, 310,456, 310,457, 313,033, [all in Class 99 (i), Pipes and tubes, Joints &c. for], and 313,579 are referred to.
Patent GB-670748-A (GB)
Title: An improved photo-electric densitometer apparatus
Inventor: LLOYD HARRY
IPC: G01N21/25
Filed: 1949-08-19
Abstract: 670,748. Photo-electric dust-density indicator. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 6, 1950 [Aug. 19, 1949], No. 21620/49. Class 40 (iii). A portable photo-electric densitometer for measuring the density of air-borne dust from a filter paper sample thereof, comprises a photoelectric cell 12 coupled to a micro-ammeter 13 in a casing 3 having slot means 6 for holding the dust sample 8 in a position to enable light from a separate lamp unit, such as a miner's lamp 1, to be transmitted through the sample to the photo-electric cell and bayonet socket means 4, 5 for temporarily securing the lamp unit in the appropriate position. The microammeter is normally short-circuited by contacts 16, 17 which are opened by means of levers 21 and 18 when the dust sample 8 contained in a hinged clip 7 is pressed home in the slot 6 thereby depressing the end 21a of lever 21. The scale 15 of the micro-ammeter may be calibrated directly in dust densities and a zero adjustment knob 30 is provided to set a cusp-shaped shutter 25 across the light aperture by means of pinion 28 and quadrant 27 when a clean filter paper is in position in clip 7 and thereby compensate for variations in opacities of batches of filter papers or brightnesses of lamps. A groove 14 is provided in the lamp unit 1 to co-operate with slot 6 such that the clip 7 cannot be inserted unless the lamp unit 1 has been secured to casing 3 in the correct position.
Patent GB-1204779-A (GB)
Title: Method of producing insulation materials, and insulation materials produced by using this method
IPC: C04B28/18
Filed: 1968-05-07
Abstract: 1,204,779. Thermal insulating materials; hydrothermally producing calcium silicate. OWENS - CORNING FIBERGLAS CORP. 7 May, 1968 [9 May, 1967], No. 21620/68. Headings C1A and C1H. Thermal insulating materials consisting of an asbestos filler bound by crystals of calcium silicate are made from an aqueous slurry containing calcia, finely divided silica materials and at least 0À75 lb. per cubic foot of finished insulating material of crushed sodium- or potassium-silicate glass containing up to 12 wt. per cent of other oxides and having a'silica to alkali metal oxide weight ratio between 3.75 and 7.5, by moulding the slurry into shapes which are heated to 300-400 F. in a quiescent condition to react the CaO and SiO 2 ; the ratio of dissolved alkali metal oxide to CaO in the slurry always being less than 2 wt. per cent. The slurry suitably contains 30-40 parts by wt. calcia, 30-40 parts silica, up to 8 parts clay, up to 8 parts crystalline calcium aluminosilicate, up to 1 part carbon black, fines consisting of groundup product, crushed stone, soluble alkali metal silicate, 10-25 parts crushed sodium or potassium silicate glass, and Portland cement.
Patent GB-1273936-A (GB)
Title: Benzodiazepine derivatives and a process for the manufacture thereof
IPC: C07D243/16
Filed: 1971-04-19
Abstract: 1,273,936. Benzodiazepines. F. HOFFMANN-LA ROCHE & CO. A.G. 19 April, 1971 [12 Feb., 1970], No. 2163,1/71. Heading C2C. Compounds of the general formula (B=CO, CH 2 ; R<SP>1</SP>=H, C 1-7  alkyl or hydroxyalkyl, di(C 1-7  alkyl)amino(C 1-7  alkyl), C 3-6  cycloalkyl-(C 1-7  alkyl); R<SP>2</SP>=Ph, halophenyl, trifluoromethylphenyl, Py ; R<SP>3</SP> =H, C 1-7  alkyl, OH, C 2-8  alkanoyloxy), N<SP>4</SP>-oxides of the compounds in which R<SP>3</SP> = H or alkyl and acid addition salts of the compounds and oxides are prepared by converting a 7-amino compound into a diazonium salt and treating the latter with an azide ion generating agent, optionally followed by introduction of a 1-substituent and/or salt formation. The preparation of certain of the starting materials from the corresponding nitro compounds is described. The above compounds are muscle relaxants, sedatives and anticonvulsants, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-1062204-A (GB)
Title: Television camera tube apparatus
IPC: H04N5/235
Filed: 1965-05-21
Abstract: 1,062,204. Transistor pulse circuits. FERNSEH G.m.b.H. May 21, 1965 [May 23, 1964; Dec. 12, 1964], No. 21701/65. Heading H3T. [Also in Division H1] A circuit for generating a train of pulses of variable width for blanking off the electron flow between the photo-cathode 2 and target of a television camera tube 1 during a variable portion of each frame scanning period, comprises emitter-follower impedance converter transistors 11, 15, 17 and a variably-biased diode 16. Low-impedance synchronizing signals from the emitter of transistor 11 are applied to the base of transistor 13 and a voltage of sawtooth waveform is produced across capacitor 14. The amplitude of the sawtooth voltage arising at the emitter of transistor 15 is limited by diode 16, so that there results at the base of transistor 17 a clipped sawtooth voltage in which the width of the flats can be adjusted as desired by varying the clipping level of diode 16. The clipped signals are amplified by transistors 18, 19, 20 and clipped at both ends to yield a sharp pulse of variable duration. The timeconstant circuit including capacitor 22 and adjustable resistor 23 connected in the emitter lead of transistor 21 allows the slope of the pulse edges to be adjusted. As shown, the variable width pulses are amplified by a valve 24, but, alternatively, they may be applied to a start-stop oscillator or to a modulator to which is also applied a carrier frequency. The pulsed carrier-frequency signal may be at a low voltage which is increased in a transformer, and after rectification and smoothing is applied to the camera tube. In Fig. 4, the trailing edge of each pulse occurs during a line blanking interval. A monostable trigger circuit including transistors 111, 112, Fig. 4, is driven into an unstable condition by a signal derived from the trailing edge of each vertical synchronizing pulse received at 114, to initiate the production of pulses the widths of which are controlled by variable resistor 117, and is urged towards a stable condition, to which the circuit progressively returns, by pulses derived from line synchronizing pulses received at 118. The variable-width pulses are fed by way of transformer 122 to an amplifier circuit including transistors 123-127.
Patent GB-918542-A (GB)
Title: Improvements in straight bed hand knitting machines
IPC: D04B39/00
Filed: 1959-06-25
Abstract: 918,542. Knitting machines. STEINHOF, K., [trading as STEINHOF, APPARATEFABRIK, KARL]. June 25, 1959 [June 27, 1958], No. 21816/59. Class 74 (2). A needle deflecting sheet at each end of the lock of a hand knitting machine consists of a metal strip 1 secured by its middle to the lock plate 9 and having surfaces 10 slightly curved so that the lock plate is substantially tangential thereto, the free ends of the strip being bent away at right angles to the lock plate to form needle butt deflecting ribs 3 which converge towards one another in the direction of the length of the needle bed, which have each an edge extending perpendicularly to the lock plate and terminating flush with an adjacent end edge of the associated needle guiding rail 4 (extending from and at right-angles to the lock plate) and which, when the strip is flexed towards the plate, come up against stops 12 before the strip can come into full surface contact with the lower surface of the plate. Thereafter, the strip can twist about a stop as fulcrum, this being facilitated by cut-aways 13. The stops are formed by offsets at the ends of the rails 4. The ribs 3 are trapezoidal. Specification 764,527 is referred to.
Patent GB-1249254-A (GB)
Title: Mechanism for an inking ribbon
IPC: G07C1/00
Filed: 1969-04-30
Abstract: 1,249,254. Ink ribbon mechanism. BURROUGHS CORP. 30 April, 1969 [9 May, 1968], No. 21926/69. Heading B6F. [Also in Division F2] Ink ribbon feed reversal mechanism comprises a continuously rotatable shaft 31 carrying two worm gears 35, 35<SP>1</SP> the worm gears being alternatively couplable to respective ribbon spool drive gears 25, 25<SP>1</SP> by axial movement of the shaft, such axial movement being caused automatically by tension in the ribbon 23, when a spool is empty, preventing rotation of the respective engaged drive gear 25 or 25<SP>1</SP>, whereby the drive to the respective worm gear urges the shaft axially. The axial movement of the shaft causes an actuator member 37 fixed to the shaft to move with respect to a spring detent 45, the actuator member 37 comprising a pair of base-butted conical frustums having an oblique elliptical bases joined at 37E so that as the join 37E passes the detent 45 the axial movement of the shaft 31 is assisted by the detent engaging the alternate conical frustum. Grooves 37A, 37B in the actuator member 37 define the two operative positions of the shaft. The shaft 31 is driven from a gear 41 which may be mutilated to effect incremental rotational movement.
Patent GB-1131501-A (GB)
Title: Fluorinated quinolines
Inventor: BROOKE GERALD MARTIN
IPC: C07D215/20
Filed: 1965-05-24
Abstract: 1,131,501. Fluorinated quinolines; trifluoroaniline; hexachloroquinoline. IMPERIAL SMELTING CORP. (N.S.C.) Ltd. 27 June, 1966 [24 May, 1965], No. 21974/65. Heading C2C. The invention comprises compounds of the general formula wherein ring A is substituted by 2-4 F atoms attached to nuclear carbon atoms and rings A and B have optional substituents chosen from C 1-6  alkyl, C 1-6  perfluoroalkyl, hydroxyl, alkoxy, amido, substituted amido, amino, substituted amino, chloro, bromo or iodo. The compounds may be prepared by a Skraup synthesis from (I) a polyfluoroaminobenzene having an -NH 2  group and a hydrogen atom on adjacent ring atoms and substituted with 2-4 F atoms attached to nuclear carbon atoms, and (II) an aldehyde or ketone of formula where R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are hydrogen or a substituent derived on position 2, 3 or 4 respectively of ring B. 5,6,7,8-Tetrafluoroquinoline may be reacted with sodium methoxide, KOH or ammonia to give, respectively, to give a monomethoxy-trifluoro-, a monohydroxy-tri-fluoro-, or 7 - amino - 5,6,8 - trifluoro - quinoline. 7 - Amino - 5,6,8 - trifluoroquinoline may be diazotized with NaNO 2 /HF and the resulting solution either reduced with hypophosphorous acid to give 5,6,8-trifluoroquinoline or reacted with cuprous bromide solution to give 7- bromo-5,6,8-trifluoroquinoline. 2,4,5 - Trifluoroaniline is prepared by reacting 1,2,4,5 - tetrafluorobenzene with 0.880 ammonia. A hexachloroquinoline, m.p. 184-185.5‹ C., is obtained by heating 5,6,7,8-tetrafluoroquinoline with PCl 5 .
Patent GB-381275-A (GB)
Title: Improvements in and relating to gramophone pick-up devices
IPC: H04R11/08
Filed: 1931-08-01
Abstract: 381,275. Gramophone pick - ups. FERRANTI, Ltd. and CARLISLE, H.V., Hollinwood, Lancashire. Aug. 1, 1931, No. 22012. [Class 40 (iv).] In an electromagnetic pick-up, the armature is pivoted on knife-edges and is held thereon by magnetic action. Damping of the armature is also effected solely by magnetic forces. The construction shown comprises two horseshoe magnets a, b which are arranged with polepieces a<1>, bl of opposite polarity facing each other to form an air gap, the other pair of polepieces a2, b2 being in contact or integral with each other. An armature d of high permeability steel protrudes through an opening formed in the junction between the polepieces a2, b2, the armature being pivoted by knifeedges g provided on cross arms, so that its upper end is adapted to oscillate close to the polepieces a<1>, b<1>. Movement of the armature is thus heavily damped magnetically. The needle (not shown) is held in the armature by a screw disposed in the pivotal axis of the armature. A coil h encircles the armature, or coils may be placed around each of the polepieces. Moulded material such as that known by the registered Trade Mark " Bakelite " may be provided to connect the polepieces a<1>, b<1> together. The polepieces may be accurately positioned on the ends of the limbs of the magnets by suitably shaping the abutting parts, e.g. by V-groove formation.
Patent GB-870280-A (GB)
Title: High bulk filamentary material
IPC: D02G1/20
Filed: 1958-07-09
Abstract: A bundle, tow or yarn of continuous filaments wholly or mainly of "recessed" cross-section e.g. Y-, U-, X- or H-shape or mixtures thereof, as produced by spinnerets with non-circular e.g. triangular, semi-circular, square or star-shaped orifices, is bulked by subjection to two or more successive crimping operations, e.g. compression in a stuffer-box, to impart a non-rectilinear configuration in more than one plane to the filaments.  Prior to each crimping operation the filaments may be lubricated, e.g. with water or an aqueous composition, quaternary ammonium compound or compositions exemplified in Specification 747,499.  The filaments may be of cellulose derivatives including triacetate, polyamides, polyesters including polyethylene terephthalate and polyurethane, or vinyl chloride-vinyl acetate copolymers.  Specification 696,762 also is referred to.
Patent GB-531836-A (GB)
Title: Improvements in rotary graters
IPC: A47J43/25
Filed: 1939-07-28
Abstract: 531,836. Graters. MANTELET & BOUCHER. July 28, 1939, Nos. 22031, 22032 and 22033. Convention dates, Dec. 30, 1938, March 22, 1939 and May 5, 1939. [Class 28 (ii)] In a portable grater of the type comprising a hopper secured to a handle and supporting a rotary perforated drum which is driven by a crank, the hopper extends over not more than half the periphery of the rotary drum and is secured to two lateral brackets or lugs forming a mounting for the crank shaft, which has a driving connection to the drum ; the drum is also provided with diametral reinforcing struts of sheet-metal, with central stamped-out parts secured to the crank shaft. A hopper 1 is secured to two lateral brackets 2 rotatably supporting the shaft 3 of a crank 4 for rotating a perforated grater drum 5, the hopper I covering less than half the periphery of the drum 5. The hopper 1 is provided with a looped wire 6 supporting a handle 7 and carrying the pivoted arm 9 of a pusher 10 for the hopper. The drum 5 is strengthened by a diametrically-disposed sheetmetal strut 11, Fig. 2, provided with flanges 12, 13 to be soldered to the inner surface of the drum, and with stamped curved parts 15, 16 to embrace the crank shaft, the parts 15 being formed with a groove 23 to receive a longitudinal key on the crank shaft; or other methods of fixing the strut to the crank shaft may be employed. In other forms, the drum is strengthened by two end members or cheeks each stamped from sheet-metal in the form of a flanged outer ring to which the perforated sheet-metal forming the drum is soldered, and a diametral strut the central part of which is formed with bent lugs adapted to be soldered &c. to the crank shaft.
Patent GB-849861-A (GB)
Title: Improvements in or relating to vinyl ester polymers
Inventor: BONDY CLEMENS
IPC: C08F218/04
Filed: 1958-07-09
Abstract: Vinyl ester polymers or copolymers are produced by polymerising one or more vinyl esters in the presence of the zinc, cadmium, or lead salt of at least one of the following:-crotonic acid, acrylic acid, or an alkyl, aralkyl or cycloalkyl half ester of maleic, fumaric or itaconic acid in a proportion of 0.1 to 10 mols of the salt to 100 mols of vinyl ester.  The preferred monomer is vinyl acetate and this may be copolymerised with an alkyl vinyl ketone or an ester of acrylic, maleic, fumaric or itaconic acid. The salts may be used as such or may be formed in situ, e.g. by the interaction of the carboxylic acid compound with the metal oxides or carbonates or by double decomposition of zinc, lead or cadmium salts with salts of the carboxylic acid compounds.  Gum acacia, the sodium salt of sulphonated butyl oleate, mercaptobenzthiazole, polyvinyl alcohol, carbon tetrachloride, benzoyl peroxide, hydrogen peroxide and dibutyl phthalate may be added to the polymerising mix.
Patent GB-387695-A (GB)
Title: Improvements in or relating to all-weather equipment for motor cars
IPC: B60J1/08
Filed: 1931-08-05
Abstract: 387,695. Vehicle weather screens, MATTHEWS, C. A. and GILL, J. J., 23, Chilworth Street, London. Aug. 5, 1931, No. 22237. [Classes 103 (ii) and 108 (i).] In vehicles, boats, and aircraft of the type provided with a roof and side screens which are secured to the body by a detachable connection between the lower edge of the screen and the body the connection is a slidable one comprising two interengaging parts, one secured to the body and the other to the screen so as to permit endwise movement but prevent vertical movement, and in vehicles having two door windows the screen as shown is applicable to the body between the two windows. As shown, the screen 18 is provided with a framing 19 having secured to it in any suitable manner a beading 20 whereby it may be slid into position into the guide 21 secured to the vehicle body 22, the joint being such as to permit limited outward tilting of the screen. The screen is positioned by means of a stop 31 entering a slot and by a stud 29 engaging a slot in the framing 19. The screen may be provided with a lateral plate 23 by which it is securely fixed in position by means of screws 24 &c. The framing 19 may be provided at the sides of the screen with rubber or the like strips 27 held in brackets or corner pieces 28, the strips being adapted to contact with the windows 13, 14 to exclude draught &c. and to prevent rattling. When the gap between the windows is narrow the screen may be replaced by a filling piece which may be opaque. The screen shown in Fig. 5 is provided with a wing screen 25 which is adapted to coact with a central transverse screen.