baber/WOPTO huggingface dataset:
Patent GB-275550-A (GB)
Title: Incandescent cathode rectifiers
IPC: H01J17/04
Filed: 1927-02-16
Abstract: 275,550. Meyer, F., Spanner, H. J., and Wedel, C. von. Aug. 4, 1926, [Convention date]. Addition to 274,026. Drawings to Specification. Vacuum tubes.- In order to prevent reverse currents or discharges between cold electrodes in an incandescent-cathode rectifier of the type described in the parent Specification, the anodes are shaped to a point or edge, or are provided with one or more attachments in the form of points or edges which are spaced from the cathode at a distance equal to the mean free path of the gas filling, or a small multiple thereof. In modifications the anodes are similarly spaced from each other or from an auxiliary electrode connected with the cathode and formed with points or edges or consisting of a sheet or strip.
Patent GB-990686-A (GB)
Title: Photographic camera objective
IPC: G02B9/34
Filed: 1962-02-05
Abstract: 990,686. Telephoto objectives. VOIGTLANDER A.G. Feb. 5,1962 [Feb. 24,1961], No. 4418/62. Addition to 776,788. Heading G2J. The telephoto objective of the parent Specification modified by the provision as the rear negative member of a negative meniscus followed by a positive meniscus, these components enclosing a negative air lens and each having a divergent front surface concave towards the front. Each meniscus may be formed by a simple lens L 4  and L 5  or by more than one lens. Preferably, the ratio of the sum R 10  + R 7  to the difference R 10  + R 7  is between 4. 5 and 6. 5,the surface infraction powers of surfaces R 8  and R 9  are each between 1. 33 and 3. 33 times the objective power, and the quotient of the sum R 9  and R 8  to the difference R 9  - R 8  is between 4. 5 and 6. 5. The refraction index of the rear converged meniscus is preferably more than 1. 72, the difference between the index of this meniscus and the index of the negative meniscus being between 0.04 and 0.12. Official data are given for one example of the objective shown.
Patent GB-524905-A (GB)
Title: Improvements in or relating to electrical switches for battery operated devices
IPC: F21V23/00
Filed: 1939-02-10
Abstract: 524,905. Press-button retractive switches. EVER READY CO. (GREAT BRITAIN), Ltd., (National Carbon Co., Inc.). Feb. 10, 1939, No. 4427. [Class 38 (v)] A switch incorporated in the battery case 1 of a torch or fan, has extreme positions in which the switch is locked " off " and held continuously " on," respectively, and an intermediate position in which the button 16 can be moved axially for " flashing." The button 16 is mounted in a slide 15 guided in an opening in an escutcheon 12 on the case 1 and carries a plate 23 on which the contact-blade 26 is mounted. The bar, button, and slide move as a unit and the bar is normally urged by the spring 22 against the inner face of the escutcheon 12. The latter has two pairs of recesses 13, 14 with which co-operate upturned ends 24, 25 of the bar 23, The arrangement being that when the ends 24, 25 engage recesses 14 the switch is locked " off," whereas when the button is pressed and slid so that the recesses 13 are engaged, the button can be held depressed for flashing. In the upper extreme position, the ends 24, 25 rest on the face of the escutcheon and the blade 26 continuously engages the fixed contact 6. In a modification, Fig. 3 (not shown), the positions of the recesses and their co-operating projections are interchanged. Specifications 232,100, [Class 38 (v)], and 450,647, [Group XI], are referred to.
Patent GB-114458-A (GB)
Title: Improvements in Photometer.
Inventor: LAING CLAYTON
IPC: G01J1/22
Filed: 1917-03-27
Abstract: 114,458. Laing, C. March 27, 1917. Comparison photometers for use in photography to determine exposure data comprise means whereby daylight is compared with a standard light, shutter devices being provided so that the light emanating from one source is increased while that from the other is decreased and vice versa. Mounted in a cylindrical casing are two fixed shutters 6. 19, Figs. 1 and 10, having angular openings 8, and two revolving shutters 9, 17 formed with openings 12, of the shape shown in Fig. 3, but oppositely arranged. These latter shutters are mounted in a slotted cylinder 15, which can be revolved by a finger piece 10, so that the amount of daylight entering from one end is decreased or increased at the same time that light entering from an electric lamp 23 is increased or decreased. Excess red rays from the lamp are absorbed by a suitable screen carried by the shutter 19. Equality of light entering from both sources is judged by means of a comparison device consisting of a tube 40 fixed in the casing and passing through the slot in the cylinder 15. Mounted in the lower end of the device are two translucent blocks 35 separated by a tin foil diaphragm and observed through a lens 39. A pointer carried by the part 10 moves over a suitable scale carried by the instrument.
Patent GB-667608-A (GB)
Title: Improvements in or relating to centrifugal refrigeration apparatus
IPC: F25B1/00
Filed: 1950-02-21
Abstract: 667,608. Refrigerating; heat-exchangers. CARRIER ENGINEERING CO., Ltd. Feb. 21, 1950 [March 18, 1949], No. 4486/50. Classes 29 and 64(iii) A refrigerator condenser comprises water tubes 14 extending between headers 15, 16 divided by partitions 17 into compartments 20, 21, 22, 23, valve means 25, 27 being provided whereby the direction of flow of a portion of the water may be reversed to vary the number of passes the water makes through the condenser. The headers at each end of the condenser are divided by baffles 17 into two compartments, the compartment 20 is connected to the water inlet pipe 18 and the compartment 23 to the water outlet pipe 19. The compartments 21, 22 are connected to the inlet and outlet pipes respectively through valves 25, 27. When the condenser water is to be used for heating purposes the valves 25, 27 are closed and the water makes three passes through the condenser. When the refrigerating machine is used solely for chilling water in the evaporator (not shown) the valves 25, 27 are opened so that the condenser cooling water makes one pass only through the condenser.
Patent GB-946718-A (GB)
Title: Polishing devices
Inventor: RENNIE CHARLES ROBERT
IPC: B24D7/16
Filed: 1961-12-18
Abstract: 946,718. Polishing. RAPHAELS Ltd. Nov. 28, 1962 [Dec. 18, 1961], No. 45304/61. Heading B3D. [Also in Division A4] A polishing device comprises an annulus of felt 21 stuck to a backing disc 20 of rigid material having provision for attaching it to a polishing spindle 10. The attaching means may comprise a member having a flat flange 15, Fig. 2, to which the disc 20 is secured and having a tubular portion 14 to take a reduced diameter portion of the spindle 10 or, as in Fig. 3, the tubular portion 24 may be a snug fit on a spindle provided with a tapered threaded end 23 on which an inserted bush 27 of relatively soft material is screwed. The backing disc 20 may be of hardboard having jig-drilled holes for securing it by screws or studs to the flange 15 or 25, and the bush 27 may be of lead or fabric-reinforced synthetic resin.
Patent GB-549204-A (GB)
Title: Improvements in or relating to dyestuff intermediates
IPC: C07D277/64
Filed: 1941-04-07
Abstract: 549,204. Thioesters. KENDALL, J. D. April 7, 1941, No. 4604. Samples furnished. [Class 2 (iii)] Dyestuff intermediates are prepared by condensing a quaternary ammonium salt of a heterocyclic nitrogen compound containing a reactive methyl or mono alkyl substituted methyl group in α or y position with an excess of a compound having the formula S = C(SR) 2  wherein R is an alkyl or aralkyl group in the presence of a base and a solvent. In examples, dimethyltrithiocarbonate is condensed in the presence of triethylamine and alcohol with 1 - methylbenzthiazolmethyltoluenesulphonate, quinaldinemethiodide, 4:5-dimethoxy-1-methyl benzthiazolethyl - p - toluenesulphonate and 1:4 - dimethylbenzthiazolethyl - p toluenesulphonate. By treating the products with alkyl or aralkyl esters, quaternary ammonium salts which are also intermediates are obtained (cf. Specification 549,202). Dyestuffs in small quantities are obtained together with the products (cf. Specification 549,203). Quaternary ammonium salts containing reactive methyl groups for use as starting materials may be derived from oxazoles, selenazoles and thiazoles of the benzene, naphthalene, acenaphthene and anthracene series, pyridine and its polycyclic homologues indolenines, pyrimidines, quinazolines, thio- #:#<SP>1</SP>-diazol, oxazolines, thiazolines, selenazolines and their amino, hydroxy, alkoxy, methylenedioxy and halogen substitution derivatives. Samples have been furnished under Sect. 2 (5) of products obtained by condensing (1) dimethyltrithiocarbonate with 1-ethylbenzthiazolmethyl - p - toluenesulphonate and (2) dibenzyltrithiocarbonate with 1-methylbenzthiazolmethyl-p-toluenesulphonate. Dibenzyltrithiocarbonate is obtained by treating with benzylchloride the aqueous potassium trithiocarbonate prepared by dissolving in water the product obtained by reacting carbondisulphide with alcoholic potash saturated with hydrogen sulphide.
Patent GB-782251-A (GB)
Title: Improvements in or relating to inductive transmitters
IPC: H02P29/00
Filed: 1956-02-14
Abstract: 782,251. Dynamo-electric machines ; transmitting mechanical power. ELEKTRO-MECHANIK GES. Feb. 14, 1956 [Feb. 14, 1955], No. 4641/56. Classes 35 and 38 (4). Current is supplied to a rotating member without the use of slip-rings by a device 18 comprising two polyphase stators 19, 20 producing opposite flux rotation, and a single rotor 23 whose winding 21 is influenced by both stator fluxes. Rotation of the rotor causes the voltage induced by one stator to rise and that induced the other to fall by an equal amount so that the total output of the rotor winding is unchanged. The rotor current is passed through a rectifier 26 and fed back through the hollow shaft to the load device, as shown, an electromagnetic clutch 14 or 15 of a reversible drive to shaft 17 from a motor shaft 10.
Patent GB-736528-A (GB)
Title: Improvements in or relating to aircraft flying controls
Inventor: NORTH JOHN DUDLEY
IPC: B64C13/00
Filed: 1953-02-19
Abstract: 736,528. Fluid-pressure servomotor-control systems. BOULTON PAUL AIRCRAFT, Ltd. Feb. 19, 1954 [Feb. 19, 1953], No. 4665/53. Class 135. [Also in Group XXXIII] A flying control for aircraft (see Group XXXIII) has in combination means for spring loading the flying control surface to a predetermined position, and a hydraulic damper for damping the movement of the control surface by externally applied loads. As illustrated, the dashpot comprises a hydraulic servomotor 3 normally adapted for operating the surface 1, a piston 4 being connected by a rod to a lever 5 fast to the surface, an extension of which lever is constrained by springs 14, 15 contained in a frame 16 adjustable by screws 17, 18 to predetermine a neutral position of the surface. A by-pass duct 8 contains a bleed member 10 biased by spring 13 to provide a bleed path to convert servomotor 3 to a dashpot. When the normal control system is made operative, e.g. by starting a motor driving the hydraulic pump or driving an auxiliary pump operating a relay controlling the main pump, hydraulic pressure in pipe 12 forces member 10 back against spring 13 to block the by-pass duct 8. The springs 14, 15 may be inside the servomotor 3, acting on the piston 4.
Patent GB-240357-A (GB)
Title: Improvements in and relating to clutches for connecting and disconnecting power transmission shafts
IPC: F16D43/22
Filed: 1925-02-20
Abstract: 240,357. Hunt, W. Feb. 20, 1925. Clutches, friction. - The main expanding or contracting clutch coil of the centrifugally-controlled friction clutch described in Specification 208,363 is replaced by a pair of expanding or contracting shoes. In the expanding-shoe clutch shown arcuate, shoes b<1>, b<2> are pivotally connected at j<1>, j<2> to arms d<1>, d<2> loose on the driven shaft y, and at k<1>, k<2> to plates p<1>, p<2> which are hinged on the shaft y and normally held by springs n<1> n<2> somewhat inclined from the radial position towards the arms d<1>, d<2> respectively. Extensions of the arms d<1>, d<2> are connected to a loose drum c, which is acted on by centrifugally controlled shoes carried by a driving-member (not shown), as in the Specification above referred to, or by an expanding or contracting band or other centrifugally operated clutch member. On engagement of the auxiliary clutch, the arms d<1>, d<2> are advanced and, due to the resistance of the driven shaft, the plates p<1>, p<2> turned into a. more nearly radial position until arrested by adjustable pins (not shown) carried by a member on the shaft y. The shoes b<1>, b<2> then engage a driving-drum (not shown) which may have an adjustable inner lining. Such lining may, however, be carried by any form of framework in place of the drum. Specification 215,560 also is referred to.
Patent GB-1292357-A (GB)
Title: PREPARATION OF p-NIROPHENOL AND SALTS THEREOF
IPC: B01J21/00
Filed: 1970-01-30
Abstract: 1292357 p-Nitrophenol and salts E I DU PONT DE NEMOURS & CO 30 Jan 1970 [11 Feb 1969] 4723/70 Heading C2C A process for the preparation of p-nitrophenol or a metal salt thereof comprises agitating a mixture comprising nitrobenzene, a metal hydroxide which is potassium hydroxide, cesium hydroxide or rubidium hydroxide and ammonia. Oxygen may be included to avoid reduction of the nitrobenzene. The metal salt is converted to p-nitrophenol by acidification optionally in situ. Examples are furnished.
Patent GB-1410465-A (GB)
Title: Electronic safety apparatus for an automotive vehicle
IPC: B60K28/06
Filed: 1974-02-01
Abstract: 1410465 Motor vehicle safety apparatus NISSAN MOTOR CO Ltd 1 Feb 1974 [3 Feb 1973] 04773/74 Heading B7H  Safety apparatus for warning the driver of a motor vehicle that the frequency of steering wheel movements has fallen below a reference value indicating that he is fatigued or otherwise incapacitated comprises a speed detector 10a for producing a first signal when the vehicle speed exceeds a predetermined value at the start of a run, a trip sensor 13 which responds to the first signal by producing a periodic trip signal at preselected distance intervals, a first counter 16 for counting steering wheel movements during the first trip period to establish a reference value for the run, a second counter 17 for counting the steering wheel movements to repeatedly establish a second count during the subsequent trip periods, and a comparator 18 for comparing the counts to activate a warning device 19 if the second count is smaller than the reference count. Steering wheel movements are detected by a photo-electric sensor 16 which produces a pulse-type signal in response to oscillation of the steering wheel. Each time the vehicle speed reaches the predetermined value after falling below that value the speed detector 10a signals the start of a fresh run and the first counter 16 establishes a new reference count. The reference count is reduced by a factor of less than unity before comparison with the second count as steering movements are often more frequent than normal at the beginning of a run, and the value of the reference count may be varied in accordance with the speed of the vehicle as. steering movements are usually less frequent during high-speed driving.
Patent GB-364397-A (GB)
Title: Improvements in blotting devices
IPC: B43L17/08
Filed: 1931-02-17
Abstract: 364,397. Blotting-appliances. ERNST, R., Reichenbach, near Waldheim, Germany. Feb. 17, 1931, No. 5012. [Class 146 (iii).] In a blotting-appliance of the kind wherein a blotting- roller is divided into hingedly connected halves i, k between the free edges of which the ends of a blotting- strip c are clamped and the roller is rotatably mounted in a forked operating-handle, the halves of the roller are clamped together by means of coil springs o which are pivoted to the ends of one half at n and adapted to be hooked to screws s on the other half. One half of the roller may be provided with sleeves p adapted to receive the ends of the forked wire handle, the ends being sprung into position and retained by sliding over the shank of the handle a bored hand-grip. The roller is provided with a felt support b.
Patent GB-945241-A (GB)
Title: Improvements in or relating to apparatus and methods adapted for use in soldering the side seams of cans
IPC: B23K1/16
Filed: 1960-02-12
Abstract: 945,241. Making cans; soldering. BRITISH UNITED SHOE MACHINERY CO. Ltd. Feb. 12, 1960 [Feb. 19, 1959], No. 5043/60. Headings B3A and B3R. In soldering the side seams of can body portions, each of which side seams comprises an interlocked portion joining two lap portions comprising overlapping layers, the body portions are conveyed seriatim past solder-applying mechanism and pressure is applied to the lap portions only of the side seams to hold the layers together while the solder between the layers is allowed to solidify. The cylindrical can bodies B, Fig. 5, made of tin-coated steel, each have an interlocked side seam portion 4 extending to within a short distance of the ends of the body and at its ends lapped portions L for facilitating the fitting of the can top and bottom. The bodies are conveyed from a body maker seriatim with their seams lowermost and in alignment by dogs 28 on an endless chain 26 past a solder applying mechanism S substantially as described in Specification 900,716 and the lap compressing mechanism C. The chain 26 is supported in guides 36 by transverse studs which allow a slight upward movement against applied pressure. The mechanism C comprises an endless chain 42 having lugs 44 with the same spacing as the dogs 28, the chain 42 having the same linear speed as the chain 26 and being supported by a guide 46. The mechanism C also comprises two spaced guide members 60 which engage each body portion on each side of its seam as it passes through and leaves the solder applying mechanism S and two similar guides 64 at the exit end of the chain 42. The body portions passing along the guides 60 are deformed to elliptical shape with no gap between' the lapped portions 14, 16, Fig. 5, and while still on the guides 60 a trailing lap portion L<SP>1</SP>, Fig. 3, of one body and a leading lap portion L<SP>2</SP> of the next body are engaged by the flat upper surface of a lug 44 on the chain 42 which maintains the elliptical shape. As the bodies are carried by the chains 26, 42 the solder solidifies and then the bodies move on to members 64 which allow them to return to cylindrical shape. The lapped ends of the soldered bodies are flanged outwardly and rolled with edges of can top and bottom members to form double seams.
Patent GB-1162856-A (GB)
Title: Improvements in Smokestacks and/or Breechings
Inventor: LAWRENCE RICHARD EDWARD
IPC: E04H12/28
Filed: 1967-02-02
Abstract: 1,162,856. Metal pipes; pipe joints. R. E. LAWRENCE. 2 Feb., 1967, No. 5169/67. Headings F2G and F2P. [Also in Division F4] A steel smokestack or breeching is made in sections 10 having terminal plate flanges 14, 15 with holes 14<SP>1</SP>, 15<SP>1</SP> for bolts or the like to join the sections together, each section comprising axially aligned portions 11, 12, 13 with concentric inner and outer walls 23, 22 forming a smoke conduit and a surrounding dead space sealed at its ends by the plate flanges 14, 15, the portions 11, 12, 13 being braced at uniformly spaced intervals by stiffeners 18, 19, 20, 21 extending above and below the joints 17 of the portions. In modifications (Figs. 3-7, not shown), the axially aligned portions are made in four or six segmental parts with radially and axially extending flanges (F) whereby the parts are secured together. In further modifications (Figs. 9 to 15, not shown), the outer wall has an accordion-like fold (30a) at its upper end to allow for differential axial expansion between the inner and outer walls, this fold being surrounded by an apron (40a) welded to the top plate flange (32a). Relative expansion is also permitted by stiffeners comprising interfitting T-pieces (56, Fig. 12, not shown) and sockets (62). Some of the axially aligned portions have V or inverted V-section rings (94, 95, 96, Figs. 18 to 20, not shown) welded to them to permit relative sliding movement between these portions.
Patent GB-1217211-A (GB)
Title: Process and device for removing residual thread from a spool
Inventor: SCHMID ERWIN
IPC: D03D45/58
Filed: 1968-02-01
Abstract: 1,217,211. Removing thread residue from bobbins. KNOTEX MASCHINENBAU G.m.b.H. 1 Feb., 1968 [4 Feb., 1967], No. 5195/68. Heading D1F. Thread residue is removed from a suspended bobbin by the start of the thread being blown between two discs, the discs being pressed together to clamp the thread and being rotated to wind the thread thereon, with the discs then being opened to allow the wound thread residue to be removed. As shown a beam 2 has a plurality of bobbin supports 3 each of which can grip by means of a magnet 6 or a leaf spring a bobbin 5. Below each support is a continually driven disc 9, and a disc 10 axially movable by eccentric 20. Nozzles 8 blow the start of the thread between the discs while nozzle 27 blows the wound residue into a funnel below the discs. One or both discs are preferably tapered, or both discs may be cylindrical with further air jets being provided to blow the residue off the opened discs. The operation is time controlled and after a set time beam 2 is moved to a position in which the bobbins are knocked from the supports 3.
Patent GB-778600-A (GB)
Title: Vaporizing dispenser for air treating gels
IPC: A61L9/12
Filed: 1956-02-21
Abstract: 778,600. Vapour diffusing devices. AIRKEM, Inc. Feb. 21, 1956 [March 18, 1955], No. 5315/56. Class 81(1) A vapour diffusing device for air treating gel in cylindrical slug form comprises a storage chamber 13 having a length and width closely conforming to the length and diameter of a predetermined sized cylindrical gel slug 15 when disposed with its axis horizontally of the chamber, supporting means for the chamber providing a volatilization zone 14 below the chamber, and means forming a restricted passage 25 between the volatilization zone and the chamber, the opening provided by the restricted passage being substantially less than the diameter of a fresh gel slug to thereby support the gel slug within the chamber while exposing a portion of the cylindrical surface of the gel slug for evaporation of volatilizable material therefrom. As shown the vapour diffuser comprises a base 10 provided with grooves 16 for receiving in snap engagement a flange 17 extending around the lower end of a body portion 11 and a telescoping closure part 12 which together form the upper storage chamber 13 and the lower volatilization chamber 14 for cylindrical bodies of air treating gels 15 which are supported one above the other by ribs 24 forming a restricted passage 25 through which part of the lower gel is exposed and vaporizes until it has wasted sufficiently to fall through into the volatilization chamber 14 (as shown at 15<SP>11</SP>) when another takes its place. Apertures 26 are provided in opposed longitudinal walls of the lower part of the body 11 and through which by vertical adjustment of the closure 12 the rate of volatilization of the gels may be regulated, a visual indicator marked on the end of the closure 12 serving to indicate the extent to which the apertures are open.