baber/WOPTO huggingface dataset:
Patent GB-332491-A (GB)
Title: Improvements in and relating to drying kilns
IPC: F26B15/00
Filed: 1929-11-02
Abstract: 332,491. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitats Ges.). Nov. 3, 1928, [Convention date]. Systems controlling travel for a fixed distance. -In a drying-oven in which cradles or frames on a conveyer are given an intermittent progressive movement through a tunnel, and slides or doors can be projected across the tunnel to enclose the cradles whilst they are stationary, means are provided to ensure that the motor driving the conveyer can be operated only when the slides are open, and to close the slides simultaneously with the stopping of the motor. This arrangement prevents the slides from being closed otherwise than when they register with gaps between adjacent cradles. The coil 8 of the motor contactor 17 can be energized only when a switch 4 is closed i.e. when the slide is open. A switch 12 is normally open and a safety switch 13 normally closed, whilst when the conveyer 20 is stationary a lever 15 is normally engaged by one of a number of projections 6 on the conveyer to hold a switch 5 open. An independently driven controller drum 2 co-acts with contacts 18, 19. As the drum bridges the contacts 19 the electromagnet 3 is energized to open the slide and close the switch 4. The contacts 18 being simultaneously bridged the actuating coil 8 of the motor contactor is thereby energized to close the motor circuit which is maintained by the closing of the switch 5 which has now been effected owing to the release of the lever 15 due to the movement of the conveyer. The conveyer continues to move until the next projection 6 engages the lever 15 to open the switch 5, de-energize the coil 8 and open the motor contactor. The contact 7 breaks the circuit of the electromagnet 3 thereby closing the slide and breaking the motor contactor coil circuit additionally at the contacts 4. The conveyer remains stationary until the controller drum has made another substantially complete revolution, when the conductor strips again bridge the contacts 18, 19. A brake 10 is operated simultaneously with the motor. An alternative arrangement for operating the switch 5 comprises a disc mounted on the shaft of one of the conveyer pulleys outside the oven and provided with a number of projections. The duration of the drying operation may be varied by regulating the speed of the auxiliary motor driving the controller drum, without interfering with the main motor. To avoid the normal effect of the controller drum during the loading and unloading of the conveyer, the switch 12 bridging the contacts 18, 19 may be closed. The safety switch 13, when opened, de-energizes the coil 14 to break the motor contactor coil circuit at 9 and energizes the circuit of the electromagnet 3 at contacts 11 to open the slide.
Patent GB-174265-A (GB)
Title: Improvements in detachable rims for securing tyres to wheels
IPC: B60B25/02
Filed: 1920-11-26
Abstract: 174,265. Smith, R. T. Nov. 26, 1920. Tyre attachments to rims.-To prevent lateral displacement of the removable section B of a col. lapsable rim, the abutting edges of the segment and of the main part A of the rim are arranged along non-parallel lines. In the construction shown, the segment B is further secured by a swivelling plate c adapted to hook over skids a<3> on tne ends of the rim.
Patent GB-604998-A (GB)
Title: Improvements relating to tin openers
IPC: B67B7/46
Filed: 1945-12-11
Abstract: 604,998. Tin-openers. JORGENSEN, E. Dec. 11, 1945, No. 33495. [Class 66] A step-by-step, lever tin-opener with a piercer e, Figs, 2 and 5, as an extension of the cutter c has a fulcrum-strip h with one end engaging under the bead k of the can and the other movable on an arm g, with a spring i holding the strip h in operative position. A guide-strip m on the outer side of the shank a bears against the wall d of the can. There may be a crown-cork opener n.
Patent GB-1441383-A (GB)
Title: Closure members for bottles
IPC: B65D41/28
Filed: 1972-07-18
Abstract: 1441383 Container closures J A DANCKER 29 June 1973 [18 July 1972] 33521/72 Heading B8T A safety stopper consists of a tubular member 10, made of resilient material, open at one end and closed at the other. To the closed end 11 is attached a rigid member 15 coaxially mounted. The open end of member 10 has on outwardly extending flange 13. As shown the rigid member 15 is integral with a flexible skirt 18. In order to remove the stopper, the rigid member is depressed, thus applying axial tension to the member 10 causing it to contract radially. The skirt 18 must then be compressed radially at a level below the flange 13, so retaining the tensile state of member 10 and enabling the stopper to be withdrawn.
Patent GB-1127268-A (GB)
Title: Improvements in or relating to d.c. amplifiers
IPC: A61B5/276
Filed: 1967-07-21
Abstract: 1,127,268. Transistor amplifying circuits. HONEYWELL Inc. 21 July, 1967 [27 July, 1966], No. 33579/67. Heading H3T. A drift stabilization system for a D.C. amplifier comprises a standard signal source and means for connecting it to an input of the amplifier, an error corrector and first switching means which when conductive connect it to the amplifier output, and second switching means which when conductive connect signal input terminals and also an output of the error corrector to at least one amplifier input. The first and second switching means are arranged to operate in synchronism so that when either is conducting the other is not and the error corrector is arranged to respond in operation to any signal applied to it from the amplifier output, to store a signal representative thereof and to provide a similar signal for application to the amplifier input in such a sense as to tend to compensate for any drift when the second switch is conductive. As shown, the standard signal source 28 comprises earth, which is connected to the amplifier input by a field effect transistor used as a switch; field effect transistors are also used as the first and second switches 42, 14 respectively. In each case the gate is connected to source via a resistor and gating pulses applied to it via a reversed diode, so that the transistor cannot be driven into passing gate current. The error corrector comprises a capacitor 50. The amplifier 24 may be provided with a fixed negative feedback path and also a second path including a switching field effect transistor which is operated in synchronism with the second switch 14, so that the gain is greater during the period when the error corrector is being charged. The error corrector 42 may alternatively comprise an analogue to digital converter followed by a digital to analogue converter (Fig. 3, not shown).
Patent GB-486560-A (GB)
Title: Improvements in or relating to the manufacture of organic esters
IPC: C07C51/10
Filed: 1936-12-07
Abstract: In the production of esters by reacting a di-alkyl ether with carbon monoxide in the presence of a compound containing boron and halogen, the product is treated with a di-alkyl ether, advantageously in excess, whereby the ester is liberated from its addition compound with the boron-halogen compound and is distilled off.  The ether-boron-halogen addition compound formed can be treated with more carbon monoxide to form an ester.  Methyl, ethyl, propyl, butyl, isopropyl, and allyl symmetrical and unsymmetrical ethers are suitable.  Boron compounds include boron fluoride, hydrofluoboric acid, dihydroxyfluoboric acid and, in general, oxygenated acids obtained by reacting hydrofluoric acid with boric acids and borates, and boron halide-water complexes. Promoters, e.g. powdered metals or metal oxides such as nickel, nickel oxide, and mercury oxides, may be added.  The molecular ratio of condensing agent to ether is generally 0, to 1,0 or higher, and much less in the presence of promoters. Temperatures from normal up to 350, preferably 150-240 DEG  C., and pressures up to 1000 atm. or more, preferably 400-900 atm., may be employed. Commercial carbon monoxide which may contain inert gases but is preferably freed from sulphur and carbonyl compounds may be used. In examples: (1) dimethyl ether and boron fluoride are reacted at ordinary temperature and pressure and the product treated with CO at 900 atm.  After heating for 2 hrs. at 150-190 DEG  C. the product is discharged and distilled while dimethyl ether is added.  Methyl acetate is recovered and the residue again treated with CO; (2) a mixture of dimethyl ether - boron fluoride addition compound and dihydroxyfluoboric acid is used, the initial CO pressure being 800 atm.  The product is distilled while dimethyl ether is constantly added.  Specification 486,563 is referred to.  The Specification as open to inspection under Sect. 91 comprises the use of other compounds such as water, metal halides, e.g. CaF2, NaCl, and NaF, and alcohols in place of ethers for liberating the esters.  The conversion of chlorethers, cyclohexyl ether, and anisole to the corresponding esters is also referred to.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1032952-A (GB)
Title: Paper catch tray
IPC: B65H31/02
Filed: 1964-08-18
Abstract: 1,032,952. Delivering paper &c. RANK XEROX Ltd. Aug. 18, 1964 [Sept. 9, 1963], No. 33625/64. Heading B6H. A paper tray 10 is releasably mounted by a hanger yoke 35 in yoke supports 5, 6 of a desk type xerographic reproducing apparatus 1, having a document discharge guide 2 and reproduction discharge 3, the tray including a hanger panel 11 secured to said yoke 35. The hanger panel 11 comprises a base 12 terminating in upright panels 13 and a deflecting plate 15. To retain the documents and reproductions discharged into the tray there is provided a shoot 21 pivotally secured at the bottom of the base 12 to a flap hinge 24. The shoot 21 terminates in a curved end wall 22 provided with a cut-out 23 (Fig. 6, not shown) for bottom removal of the reproductions and supports on side frames 25, a window 27 and an edge trim 28. The shoot, frame and window are maintained in the position shown by spring latches 32 secured to panels 13 and the free ends of the latches receive the bottom extensions of the frames 25. The latches are released by a forward pull of the edge trim 28 whereby the shoot 21 will pivot forward to facilitate top removal of the reproductions.
Patent GB-1193043-A (GB)
Title: Sodium Tripolyphosphate.
IPC: C01B25/41
Filed: 1968-07-16
Abstract: 1,193,043. Hydrating sodium tripolyphosphate. FMC CORP. 16 July, 1968 [28 July, 1967], No. 33734/68. Heading C1A. Anhydrous sodium tripolyphosphate is hydrated by distributing water uniformly over agitated particles of anhydrous tripolyphosphate, at least 10% by wt. of which have a size below 100 U.S. mesh, the water being added in an amount of at least 80% but not in excess of 105% of that theoretically required to produce the hexahydrate, and at such a rate as to keep the temperature below 80 C. The water is preferably 80-98% of the theoretical, and may be sprayed on to the particles in an inclined rotary tube. The product may be dried at below 80 C. by showering it through a stream of air having an inlet temperature of 75-85 C. If may then be ground and screened to a product size of - 20 + 60 mesh, fines being recycled. The starting material may be obtained by drying and calcining a solution of H 3 PO 4  and Na 2 CO 3  having an Na/P ratio of 1À67 to give a mixture of Phase I and II which is then ground to the required size. The product has a bulk density of 0À65-0À9 g/cc.
Patent GB-506991-A (GB)
Title: Improvements in garden and the like rakes
IPC: A01D7/06
Filed: 1938-11-21
Abstract: 506,991. Garden &c. rakes. ENGLISH TOOLS, Ltd., and HEATON, E. C. Nov. 21, 1938, No. 33739. [Class 6 (ii)] In a rake, a strip of rubber 1 having integral rubber prongs 2 is held between a plate 5 provided with means 8 for receiving the handle 10 of the rake, and a detachable metal strip 3, Fig. 4. The strip 3 has a grooved flange 4 into which the rubber 1, which may be reinforced with canvas, engages and is fixed by bolts 7 to the plate 5. The plate 5 may be welded to the socket 8 into which the handle 10 is bolted.
Patent GB-1175998-A (GB)
Title: Improvements in Methods and Arrangements for Measuring and Checking Dimensions
IPC: G01B11/22
Filed: 1967-07-21
Abstract: 1,175,998. Mirror mounts. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. July 21, 1967 [July 21, 1966], No.33762/67. Heading G2J. [Also in Division G1] A device for cyclicly modulating the length of the path taken by a beam F 1  comprises a pair of mirrors 21, 22 deflecting the beam F 1  to a prism assembly 23 movable by a cam 25 along a guide 24. The cam is symmetrical about the line X 1 X 2  and has a form: p = k# - p o  for O < # < #.
Patent GB-435078-A (GB)
Title: Improvements in devices for compensating the action of the wind on aircraft gun-supporting turrets
IPC: F41A27/30
Filed: 1934-03-12
Abstract: 435,078. Aircraft gun mountings. PILAIN, R., 20, Rue Terme, Lyons, France. March 12, 1934, No. 33766. Divided out of and addition to 435,040 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 11, 1934. [Class 92 (i)] The spring-controlled device for compensating for the action of wind-pressure and gravity on mountings of the " ring " type as claimed in the parent Specification has the spring in the form of a rod 10 subject to torsion. The rod carries at one end an arm 35 connected by a link 37 with a limb 4 of the arch member supporting the gun 5. At the other end the rod carries an arm 31 which is connected by a link 33 with a crank arm 27 geared to rotate synchronously with the rotary ring 2 supporting the gun. The link 37 may be connected to a pivoted toothed sector geared to the arm 4 and ball joints are provided at the extremities of the links 33, 37.
Patent GB-314748-A (GB)
Title: Artificial fly in fishing
IPC: A01K85/08
Filed: 1928-11-19
Abstract: 314,748. Stewart, J. C. Nov. 19, 1928. Artifi,cial flies.-An artificial fly 4 on a hook 3 has means for attaching other hooks 6, 6<a>, 6b, these may be secured to a length of gut 5 or may be integral with the hook 3.
Patent GB-633704-A (GB)
Title: Improvements in or relating to a stock feeding device
IPC: B21F99/00
Filed: 1946-11-18
Abstract: 633,704. Forging. NATIONAL MACHINERY CO. Nov. 18, 1946, No. 34084. Convention date, Jan. 31. [Class 83 (iv)] [Also in Group XXIV] A stock feeding device, more particularly for metal working machinery such as upsetting and heading machines comprises intermittent stock feed members driven from a pivoted lever coupled to a reciprocating driving member by locking means which may be released so that the driving member can be driven without moving the pivoted lever or the feed mechanism and means preventing such release during the feeding stroke. The stock is fed by feed rolls 5, the lower of which is intermittently rotated by means of a ratchet mechanism 7 of known type operated by a lever 20 pivoted at 41 and coupled to the ratchet mechanism by a link 55. The lever 20 is reciprocated from a crank-pin 9 through lever 11 and a swinging arm 12 which is pivoted on a pin 13. One part 18 of the lever 20 abuts one side of the arm 12 and when in driving position, a spring-pressed pin 16 slidably mounted in the lever 20, embraces the other side of the arm 12 so that the oscillation of the arm is transmitted to the lever. The pin 16 may however be withdrawn from the position in which it engages the arm 12 and no motion is then transmitted to the feed rolls. A shaft 25 freely mounted within the lever 20 has an arm 26 extending into a notch 27 in the pin 16 and to the outer end of the shaft is fixed an arm 28 which during the return or idle stroke of the mechanism may engage a tripping cam 30 in which case the arm 28 is operated to raise the pin to interrupt the drive. The cam 30 may be moved into a position to engage the arm 28 on the idle stroke of the lever 20 by means of a hand lever 59 operating through rod 58 and link 33, but the arm 28 itself prevents the cam 30 from moving into the operating position during the feed stroke. When the pin 16 is released for re-engagement, it will ride across the surface 60 of the arm 12 until the arm reaches a position for the beginning of a fresh feed stroke. The extent of the driving movement of the rolls 5 may be adjusted by means of the connection between the link 55 and lever 20 which comprises a screw 48 mounted in the lever and in screw-threaded engagement with a block 47 pivoted to the end of the link. A hand-wheel 54 serves to rotate the screw through gears 50 and 52.
Patent GB-1413460-A (GB)
Title: Single chain scraper conveyor
IPC: B65G19/24
Filed: 1974-08-02
Abstract: 1413460 Scraper conveyers HALBACH & BRAUN 2 Aug 1974 [7 Sept 1973] 34132/74 Heading B8A Each flight bar 5 of a single-chain scraper conveyer is connected to chain 3 by a stirrup member 4 of which a portion 10 extends below the bottom 8 of the flight bar arms 9. The flights are thus supported by the stirrup members engaging a deck plate 2 of the conveyer troughing. End portions 6 of the flights are guided by trough walls 7.
Patent GB-501857-A (GB)
Title: Adjustable muff or screen for motor vehicle radiator
IPC: F01P7/10
Filed: 1937-12-10
Abstract: 501,857. Radiators for motor vehicles. DUNNING, C. E. Dec. 10, 1937, No. 34183. [Class 64 (iii)] A screen for a motor-vehicle radiator comprises a frame having grooved uprights H, for accommodating the edges of a blind G, a guide roller I at the base of the frame, and lateral extensions L between the outer ends of which is mounted a spring- roller K to which one edge of the blind is secured. The frame is secured to the front of the vehicle by a cross-bar M, and the blind is operated by a cord wound on a pulley B attached to a ratchet-wheel mounted on the steering-post A of the vehicle and operated by a hand wheel C.
Patent GB-641022-A (GB)
Title: Improvements in or relating to anode packages for use in cathodic systems for protecting underground metallic structures
IPC: C23F13/02
Filed: 1946-12-24
Abstract: 641,022. Preventing corrosion. ALUMINUM CO: OF AMERICA. Dec. 24, 1947, No. 34224. Convention date, Oct. 25,1946. [Class 123(i)] An anode package for use in cathodic systems of preventing corrosion in underground metallic structures, comprises a metallic electrode 18 which is partially or wholly enveloped and contacted by a rigid mass 19 containing any chemical which promotes the action of the device. The electrode 18 and envelope 19 comprise a single unit which is buried in the earth, the electrode being connected to the system to be protected by a conductor 20. The envelope 19 may be of cement, plastic, ceramic, or some forms of gelatin, and after being formed round the electrode 18, has the required chemical placed in its pores by immersion or impregnation, or alternatively the mass and the chemical may be mixed prior to forming round the electrode. Examples are zinc or magnesium electrodes with calcium sulphate cement or an aluminium electrode with a cement envelope of magnesite and sand, moistened by a saturated solution of magnesium chloride.
Patent GB-482620-A (GB)
Title: Improvements in or relating to photographic shutters
IPC: G03B9/08
Filed: 1936-12-14
Abstract: 482,620. Venetian - blind shutters for photographic cameras. STRINGER, H. B. Dec. 14, 1936, No. 34239. [Class 98 (i)] [Also in Group XI] A venetian-blind shutter comprises a number of strips 1 at or near the longitudinal edges of which are formed corrugations 2, 3 of two different widths so that when the shutter is in the closed position with the strips overlapping a narrow corrugation 2 on one strip enters a broad corrugation 3 on the adjacent strip. The wide corrugation 3 may conveniently have a flat bed 4. Metal blocks 5, 6 are secured on opposite sides of the strips to provide for pivoting and stiffening very thin strips. A short arm 9 projects from each block 5 through the strip 1 and the block 6 in order to coact with the operating member of the shutter. In the construction where half the blades turn one way and half the other way, the central strip has two wide corrugations. Specifications 213,018, [Class 98 (i)], 365,224, and 383,224, are referred to.
Patent GB-833979-A (GB)
Title: Improvements in beam-forming electron tubes
IPC: H01J21/14
Filed: 1958-10-27
Abstract: 833,979. Thermionic valves. MACHLETT LABORATORIES Inc. Oct. 27, 1958 [Nov. 1, 1957], No. 34317/58. Class 39(1). A discharge tube has a cathode having on its outer surface alternate emitting and non-emitting areas, means for focusing the electrons from each emitting area into a beam, a control grid whose wires are opposite the non-emitting areas, and a screen grid whose wires are opposite the emitting areas. In Fig. 3, the cathode 14 has a number of longitudinal grooves 16, a layer of emissive material 18 being laid on the bottom of each groove. The sides 17 of the groove act as focusing means. The control grid wires 20 are disposed opposite the non-emissive lands 19 separating the grooves, while the screen grid wires 21 are disposed opposite the grooves themselves. The wires 21 should have a relatively small area presented towards the cathode ; in Fig. 3 they are shown as of ribbon section with the narrow edge facing the cathode, but they may also be triangular, Fig. 4 (not shown). By staggering, instead of aligning, the control and screen grids, it is intended to produce a field under which electrons are not deflected back by the screen grid to impinge on the control grid instead of passing through to the anode.
Patent GB-390779-A (GB)
Title: Bathing cap and method for the production thereof
IPC: B29C65/74
Filed: 1932-12-05
Abstract: 390,779. Bathing caps. DOROGI ES TARSA GUMMIGYAR R. T., DR., DOROGI I. and DOROGI, L., 50, Budapest- Albertfalva, Budapest. Dec. 5, 1932, No. 34392. Convention date, Oct. 27. [Class 63.] A method of manufacturing rubber bathing caps consists in uniting four or more sheets of even number meeting at a point by means of seams cut and pressed together at one operation. As shown in Fig. 1, two folded rubber sheets 3 are placed between rubber sheets 1 and 4, and a cutter 5 consisting of two arcuate wires is interposed between the laps of the sheets 3. The pile of sheets is then pressed between plates 6, and a cap of the form shown in Figs. 3 and 4 is obtained. The raw cap is vulcanised by cold or warm vulcanization. The raw sheets are prevented from sticking before the stamp-welding process by coating them with a substance which during warm vulcanization is taken up in the rubber or loses its anti-adhesive properties. In a modification, two caps are produced at one operation by using a stamp die 9, Fig. 5, and the body obtained is cut into two pieces. In a further modification, Fig. 7, two pocket-shaped elements having convex bottoms are stamped out by means of a die having arcuate branches, and are placed one upon the other, with the arcuate seams crossing, between two further rubber sheets, the sides of the pocket-shaped elements being welded with the adjoining outer sheets. The body is then cut so as to form two caps. Specification 271,355, [Class 132 (ii), Games], is referred to.
Patent GB-465399-A (GB)
Title: Improvements in or relating to cinematograph projectors
Filed: 1936-12-15
Abstract: 465,399. Kinematograph projectors. ZEISS IKON AKT.-GES. Dec. 15, 1936, No. 34491. Convention date, March 11. [Class 97 (i)] The driving motor 2 of a projector is secured by a flange to the front or rear wall of the housing 1 for the driving mechanism. As shown, it is secured below the lens carrying rods 3, is a synchronous motor, and has a starting knob 5 housed in a countersunk portion of the cover plate of its casing.