baber/WOPTO huggingface dataset:
Patent GB-274609-A (GB)
Title: An improved mechanically operated conveyor of the endlessband type
IPC: B65G17/02
Filed: 1926-05-31
Abstract: 274,609. Fisher, G. J. May 31, 1926. Conveyers with linked carriers; driving-gear; auxiliary ropes.-An endless conveyer is driven indirectly by a driving pulley through the intermediary of an endless rope which directly engages the pulley and is permanently connected to the conveyer at longitudinally separated intervals. The conveyer d may be made of flexible material or of articulated steel plates, Fig. 17, which are overlapped and bent back and interfitted with a substantial initial clearance so as to permit appreciable extension before the overlapping bent-over borders abut. The conveyer is 'secured at intervals to the driving rope c by clips g each of which consists preferably of a U-shaped strap, Fig. 16, which is passed through a slot in the conveyer 'and secured by a split pin i. The strap is clamped to the rope by a bolt and nut h. In a modification, the ends of the strap are bent over on to the band and riveted thereto. The driving pulley carries pivoted gripping levers e, Fig. 11, which are forced inwards by the rope to grip it. As the jaws move inwards they bear against and distort a spring steel hoop f and thus effect the opening of the jaws on the opposite side of the pulley.
Patent GB-594368-A (GB)
Title: Improvements in or relating to band stop filters for electromagnetic waves
IPC: H01P7/06
Filed: 1945-05-31
Abstract: 594,368. Wave-guide filters. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. May 31, 1945, No. 13730. Convention date, Dec. 14, 1943. [Class 40 (iii)] A wave-guide is provided with a variable attenuator which can block a particular frequency. Inside a wave-guide having a rectangular cross-section C and conveying waves of the H01 type is mounted a rectangular frame A which can be rotated through gearing by means of a knob B2 and can be lengthened by turning a screw-threaded shaft L, the sides I, J being telescopic for this purpose and provided with interior springs. For H01 waves the attenuation is zero when the frame is transverse, but for other settings a peak of attenuation is reached for a particular length of the sides I, J, the attenuation being greatest when the frame is parallel to the sides of the waveguide.
Patent GB-456533-A (GB)
Title: Improvements in or relating to the manufacture of unsaturated organic compounds
IPC: C07C233/09
Filed: 1935-05-10
Abstract: Unsaturated amides are manufactured by heating a mixture of a ketone cyanhydrin with sulphuric acid, oleum or an alkylsulphuric acid, or mixtures thereof, preferably in the molecular proportion of 1--2 of acid to one of cyanhydrin, to 140--180 DEG  C. for a period of time not substantially exceeding 10 minutes, preferably between \ba1/4\be minute and 5 minutes.  The reaction may be effected continuously by introducing the reactants into a mixing vessel from which they are fed at a suitable rate through a reaction zone at 140--180 DEG  C., e.g. through a coil heated in an oil bath or over a heated metal drum.  The cyanhydrins may be those of ketones of the general formula R1COCHR2R3, where R1 is an organic radicle, R2 and R3 are organic radicles, hydrogen or p  halogen, or of carbocyclyc compounds containing the group --CO--CH =.  Inert diluents may be added to the cyanhydrin prior to admixture with the acid, and antipolymerization catalysts, e.g. copper, sulphur or hydroquinone, may be added to the reaction mixture.  The mixing of the reactants is preferably effected at an elevated temperature, e.g. about 80 DEG  C., preferably in a vessel furnished with means for controlling the temperature, e.g. a cooling device.  The reaction mixture may be worked up for the isolation of the unsaturated amide, or for conversion to the corresponding acid or ester.  In examples: (1) crude acetone cyanhydrin is mixed with sulphuric acid (0,2 per cent free SO3) at 85--100 DEG  C. and the mixture is passed with a transit time of 130 seconds through a coil immersed in an oil bath at 150 DEG  C., yielding methacrylamide; (2) methyl ethyl ketone cyanhydrin is mixed with sulphuric acid at 85 DEG  C. and the mixture is treated as in (1) at 160 DEG  C. for 187 seconds, producting a -methylcrotonamide; (3) in the process of (1) the mixing temperature is 80--85 DEG  C. and the beating is effected at 160 DEG  C. with a transit time of 59 seconds; (4) crude cyclohexanone cyanhydrin is mixed with sulphuric acid at 80--90 DEG  C. and the mixture is treated as in (1) at 170 DEG  C. for 89 seconds, yielding cyclohexane-1-carboxylic amide; (5) crude acetone cyanhydrin is mixed with sulphuric acid at 80--85 DEG C. and the mixture is passed through a coil as in (1); a table gives the yields obtained at temperatures ranging from 140--180 DEG  C. and transit times of 16--279 seconds.  Specifications 405,699 and 446,908 are referred to.
Patent GB-821374-A (GB)
Title: Mechanism for folding-in or folding-over end closure portions of a bag in a bag-fabricating machine
IPC: B31B160/10
Filed: 1957-05-01
Abstract: 821,374. Toothed gearing. HESSER, MASCHINENFABRIK A.G., F. May 1, 1957 [May 29, 1956], No. 13886/57. Class 80 (1). [Also in Group XVII] A carrier-wheel for bag closure folders (see Group XVII) is given a rotary motion which varies in speed during each revolution, through an arrangement comprising two coaxial gears 23, 24, the gear 24 being connected directly to the carrier-wheel and the gear 23 to the driving mechanism (not shown). A connecting epicyclic gear 25 is oscillated by an arm 28 actuated by an eccentric 27 to give the required speed variations.
Patent GB-202704-A (GB)
Title: Locking device for electric lamps and adapters, for attachment to bayonet lamp-holders, in conjunction with a tool for operating same
IPC: H01R33/97
Filed: 1922-05-18
Abstract: 202,704. Birnie, W. J. May 18, 1922. Bayonet-joint fastenings; fastenings operated by tools.-A device for locking electric lamp bulbs in their holders comprises a ring a adapted to be screwed upon the usual threads of the holder socket and provided with an internal recess wherein are radially mounted pins adapted to be pressed by springs e into engagement with the bayonet slots. The heads d of the pins are provided with notches f to enable them to be held by the forked ends of arms g<1>, h<1> of a tool, these arms being relatively slidable by pressing their finger-pieces g<3>, h<3> whereby the pins may be withdrawn to release the lamp. The arms may be held in the extended position by a notch in a spring-controlled lever j on one arm engaging a piu m on the other.
Patent GB-696002-A (GB)
Title: Improvements in or relating to photographic roll films
Inventor: FARRINGTON GEORGE HOWARD
IPC: G03C3/02
Filed: 1951-06-13
Abstract: 696,002. Photographic roll films. ILFORD, Ltd. April 24, 1952 [June 13, 1951], No. 13987/51. Class 98 (i). A photographic roll film comprises a strip of photographic film, a paper strip extending beyond the ends of the film and secured to it, a spool on which the film and the paper are wound, and a sealing tab of self-adhesive material on the extreme inner end of the paper strip, the tab extending beyond said end and having an adhesive surface facing the spool. As shown, the paper backing 1 carries a shorter length of film 2, and each end of the backing carries a short strip of self-adhesive tape 3 and 4, that on the trailing end 5 being adhered to the spool 6 and that on the leading end 7 being free. The strip 4 is used to seal the unexposed roll on the spool 6, and the strip 3 to seal the exposed roll when wound on to a second spool. The strip 3 may be inserted in a slot in the hub of the spool 6 instead of being adhered to the core thereof. Specification 291,235, [Class 98 (i)], is referred to.
Patent GB-1116543-A (GB)
Title: Attitude computer with rotatable reference frame
Inventor: DESCHAMPS GEORGES ARMAND
IPC: B64G1/24
Filed: 1966-03-30
Abstract: 1,116,543. Digital electric calculating apparatus. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 30 March, 1966, No. 13996/66. Heading G4A. The system disclosed in Specification 938,957 for continuously providing information representing the attitude of a moving body (e.g. missile) with respect to a fixed set of axes comprising a reference frame by means of a digital electric calculating circuit is modified so as to allow for rotation of the axes themselves (e.g. as missile circumnavigates the globe). The arrangement is very similar to that previously described except that the matrix computer, ,part of which is shown in Fig. 5a (compare with Fig. 4a of prior Specification), now has inputs for buffered pulses # I , # II  and # III  signifying incremental rotations of the reference axes I, II and III relative to the body and signals # I , # II  and # III  indicating the relative direction of said rotations, in addition to inputs # x  # y , # z , # x  # y  and # z  as previously disclosed for rotations of the body (as detected by gyroscopes) relative to the reference frame. A simplified calculating circuit is illustrated in Fig. 4 (not shown) using separate static registers in place of the recirculating magnetostrictive store 98, thereby eliminating the elaborate timing requirements but leading to considerable redundancy in circuitry.
Patent GB-1194541-A (GB)
Title: Improvements in apparatus for Washing Articles Surfaces and Motor Vehicles
Inventor: STONE JACK
IPC: B60S3/04
Filed: 1967-03-28
Abstract: 1,194,541. Spray producers. J. STONE. 22 Jan., 1968 [28 March, 1967], No. 14048/67. Heading B2F. Apparatus for use with washing, polishing and/or other preparations and for connection to a water hose 13, comprises a reservoir 10 adapted to contain a washing, polishing and/or other preparation, an elongate body, a duct or aperture 14 from the reservoir through which the preparation may be fed to the body, and a handle or pistol grip 15 whereby the whole apparatus can be manipulated manually, there being turbulence vanes or grooves in the bore of the body between the point where the duct or aperture opens into the body and the outlet end thereof. A control valve may be provided in the duct or aperture, and the body may terminate in an optionally adjustable nozzle. There may be a movable body in the elongate body between the duct or aperture and the outlet to assist mixing of the preparation and water from the hose.
Patent GB-528976-A (GB)
Title: Improvements in or relating to typewriting and like machines
IPC: B41J19/58
Filed: 1939-05-11
Abstract: 528,976. Typewriters. IMPERIAL TYPE WRITER CO., Ltd., and ETHERIDGE, H. May 11, 1939, No. 14107. [Class 100 (iv)] Type-lever machines.-In a typewriter or like machine for oriental languages, in which the type-blocks lie at rest in an arcuate row, the type-bars are spaced apart according to the width of the type-block carried. In the printing position, the type-bars are received by a segment, slotted radially at angles varying according to the rest position of the type-bars. Letter-spacing mechanism.- Single or double letter-spacing is selectively controlled by the key depressed and the shift mechanism. A fast and loose dog escapement has a fixed dog 44, Figs. 5, 9, and movable dog 46 mounted on a rocker 38 actuated by a universal bar 54, Fig. 6, lever 57 and rod 62. Fixed and movable stops 52, 76 limit the motion of dog 46. Stop 76 is fixed to a sleeve 78 rotatable on pin 80 and bearing a crank 82 connected at 86 by a rod 84 to the slotted arm of a bell-crank 88 pivoted at 90 to frame 100, the other arm 89 being connected to a rod 98. A pin 94, projecting from the frame through slot 92 in crank 88, limits its angular movement and that of stop 76. The rod 98 passes through part of the frame and carries below the latter a collar 102. A spring 104, between the frame and a collar 106, tends to move rod 98 upwards into the position shown in Fig. 5, when stop 76 permits of double-spacing. A bell-crank lever 134, 135 is pivoted at 132 to a bracket 128 on the frame, and has its arm 134 arranged to depress collar 102. When rod 98 is pulled downwards, stop 78 is moved into single-space position. Two parallel bails 108, 110 extend transversely beneath all the key-levers 22, Fig. 7, and have side limbs 109, 111, pivoted at 112, and depending crank-arms 114, 126. Arm 126 is pivotally connected to arm 135 of bell-crank 134, 135 to which a lever 120 is also attached. The other end of bar 120 has an horizontal bent portion 122 lying vertically below the shift key-lever 124. Crank arm 114 has a pin 116 engaging in an inverted L-shaped slot in lever 120. The bails 108, 110 are slotted in such a way that if a key-lever having two narrow characters is depressed, bail 110 is also depressed, but if a key-lever having one wide and one narrow character is depressed, bail 108 is depressed ; while with a key-lever having two wide characters, neitner bail is depressed. Bail 110 operates bell-crank 134, 135, depresses rod 98, and shifts dog 76 to singlespace position. Bail 108 causes pin 116 to engage in the slot in lever 120 so as to move this lever and hence bell-crank 134, 135 unless the shiftkey is depressed, when lever 120 is also depressed and pin 116 enters the long horizontal portion of the slot so that the motion is lost and dog 76 remains in the double-space position, which is also the case when neither bail is depressed.
Patent GB-445654-A (GB)
Title: Improvements in typewriting machines
IPC: B41J19/42
Filed: 1935-05-14
Abstract: 445,654. Typewriters. ROYAL TYPEWRITER CO., Inc., 2, Park Avenue, New York, U.S.A.-(Assignees of Michelsen, W. O.; 8029, 90th Road, Woodhaven, Long Island, New York, U.S.A.) May 14, 1935, No. 14150. Convention date, Sept. 5, 1934. [Class 100 (iv)] Letter - spacing mechanism.-A spring-controlled wiper-cam for cushioning the return movement of the loose escapement-dog is arranged also to serve as a positive stop for the loose dog, the cam and dog being, for this purpose, so shaped that the common normal passes through the pivot of the cam when the parts are in initial position. The escapement-wheel 11, co-operates with fast and loose dogs 22, 23 on a rocker C, the loose dog being in engagement with a wiper-cam 31. which is pivoted on the rocker and connected to a spring 34. Preferably, the cam is pivoted on a yielding support consisting of U-member 26 secured to a bracket 25 on the rocker. The member 26 is adjustable by means of a screw 38. On movement of the rocker, the loose dog is swung into engagement with a stop-cushion 37, and on return of the rocker, the loose dog is cushioned and then positively arrested by the cam. The cam may be formed with a longitudinal slot. The escapement-wheel may be associated with the means described in Specification 445,685 for silencing the coupling dog 13 during return of the carriage.
Patent GB-239298-A (GB)
Title: Improvements in connection with the construction of floating vessels
IPC: B63B3/14
Filed: 1924-06-11
Abstract: 239,298. Curchin, H. W. June 11, 1924. Bulkheads; framing.-Construction for connecting up longitudinals so that the connecting- devices pass through or across the bulkhead in a liquid-tight fashion comprise horizontal plates 5 which pass through a slot in the bulkhead, and are connected to the webs of the longitudinals 2 which are stopped at 3. Sectional material 6 is fitted to the plates 1 where they pass through the bulkhead. The joint may be strengthened by the provision of a doubling plate 9 fitted to the interior or exterior of the shell or deck plating 8. The horizontal plates 3 may be scolloped between the longitudinals, or, as shown in Fig. 6, individual strap plates 5 may be provided for each longitudinal, the edges of the slots where the plates pass through the bulkhead 1 being strengthened by sectional material 11. The plates 5 may not abut directly on the longitudinals 3, but, as shown in Fig. 5, may be spaced therefrom and connected thereto by vertical plates 11. This construction may also be applied to the modified form in which the plates 5, Fig. 8, do not pass through the bulk head, but are effectively connected thereto by brackets 10 associated with suitable sectional material, an exterior or interior doubling plate being always provided on this construction.
Patent GB-217590-A (GB)
Title: Device for regulating the rate of fire in automatic fire arms
IPC: F41A19/03
Filed: 1924-06-11
Abstract: 217,590. Etablissements Darne. June 11, 1923, [Convention date]. Machine guns.-Mechanism for regulating the rate of firing gas-operated guns comprises a lever n pivoted on the breech-block m or member carrying the firing-pin, adapted to strike a tooth o<2> on a spindle o rotatably mounted' on a fixed part of the gun and carrying an arm o<1> on which is an adjustable weight o<3> for varying the moment of inertia. When the tooth is struck,' the arm o<1> is turned through a certain angle until the lever n can pass beneath the tooth o<2>. As shown, this occurs during the closing of the breech. The lever n is pivoted so that it can pass freely during the reverse movement. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also (a) the application of the invention to automatic guns other than gas-operated, for instance, to recoil operated guns, (b) a construction in which the lever n is pivoted to a moving part other than the breechblock, and (c) a modification in which two or more oscillating arms adapted to be operated in succession are provided. This subject-matter does not appear in the Specification as accepted.
Patent GB-645456-A (GB)
Title: Improvements in inner tubes
IPC: B60C5/10
Filed: 1948-05-26
Abstract: 645,456. Pneumatic tyres. CHAPPELL, D. J., and LEASON, F. W. May 26, 1948, No. 14275. [Class 144 (ii)] A butt-ended air-tube of uniform external cross-section with interfitting ends has one end sealed by closure of the walls for fitment into a closed socket spaced from and sealed to the other end of the tube. As shown in Fig. 1, the end 1 of the tube is sealed at 4 for engagement with a socket 5 with its open end vulcanized &c at 7 to the other end 2 of the tube and closure-sealed at 8. In the modification shown in Fig. 2, the sealed end 11 of the tube is received in the open end of a closed socket 15 vulcanized &c. at 17 to the other end 12 of the tube. In this form, the ends of the tube are positively connected by the inflation-valve 19 which is secured to the end 11 and passed through an aperture 22 in the end 12 of the tube. In a further modification, the receiving-end of the tube is closed by a rubber strip vulcanized &c. by its ends and edges to the tube wall.
Patent GB-204357-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H5/04
Filed: 1922-05-22
Abstract: 204,357. Preston, W., and Walker, W. May 22, 1922. Switches, quick-action.-A switch is provided with lost motion between the handle and its shaft, and between the shaft and the contactcarrying member. As applied to an ironclad switch, the handle c has a lost motion connection with a shaft a rigidly carrying an arm l on which are a pin k and roller m. The contact blades g are insulated on a tube f loosely surrounding the shaft a and carrying an arm i slotted at j to engage the pin k. Quick-a c t u a t i o n is effected by means of the roller m engaging a cam surface formed on a sliding rod n controlled by springs q. A spring r retains the contactcarrier f in the closing movement until the roller m passes the apex of the cam. Specification 207,363 is referred to.
Patent GB-644384-A (GB)
Title: Frequency meter
IPC: G01R23/00
Filed: 1947-05-30
Abstract: 644,384. Frequency measurements. LABORATORIES RADIOELECTRIQUES. May 30, 1947, No. 14427. Convention date, Jan. 17. [Class 37] [Also in Group XL (c)] In a high frequency measuring system in which the frequency to be measured is lowered in measured steps by successively mixing it with a harmonic of a series of standard frequencies, each one-tenth the frequency of its predecessor, the inter-stage filters instead of being low-pass filters are band-pass filters having a width equal to the value of the standard frequency of the stage, and a low cut-off selected to exclude parasitic frequencies. The output of the last stage is fed into a direct reading L.F. frequency meter, the original H.F. being determined by combining the known value of the harmonic chosen at each stage and the final reading on the L.F. frequency meter. A quartz-controlled 100 kc/s. oscillator 1 controls a series of relaxation oscillators 2 to 6 at a frequency of 100 kc/s., 10 kc/s., 1 kc/s., 100 c/s., 10 c/s. respectively, and two harmonic generators 7, 8 at a frequency of 1 Mc/s. and 10 Mc/s. respectively, each oscillator feeding into a combined selector, mixer and amplifier 12 to 18 and a filter 22 to 28 respectively. The oscillator frequencies may be checked by a cathode-ray oscillograph 9. The first five filters 28, 27, 22, 23, 24 pass 10,000,600 to 600 c/s., 1,000,600 to 600 c/s., 100,600 to 600 c/s., 10,600 to 600 c/s. and 1600 to 600 c/s. respectively, filter 25 passes 220 to 120 c/s. and filter 26 passes 20 to 10 c/s. Each filter feeds into the combined selector, mixer and amplifier of the following stage, except the last filter 26 which feeds through a switching device 21 to a direct reading L.F. frequency meter 19, and a recording instrument 20. Filters 24 and 25 may also be fed via switch 21 to meter 19. The selectors of the first five stages control nine pretuned circuits and select one of the first nine harmonics of the corresponding oscillator by a ten-position switch, the first position blocking the fundamental, and each subsequent position allowing the passage of one of the harmonics. The selectors of the last two stages 15, 16 control ten pre-tuned circuits, covering the fifth to fourteenth harmonic in selector 15, and the eleventh to twentieth harmonic in selector 16. Each selector switch is associated with a dial numbered 0 to 9, indicating the particular harmonic chosen, except for the switches of the last two stages, when the dial numbers are out of step with the harmonic chosen by a total of 610 c/s., this frequency being added to the scale calibration of the L.F. frequency meter 19. The mixers include facilites for eliminating the sum frequency and standard frequency, and pass only the difference frequency. For measuring the frequency of a weak signal a superheterodyne receiver may be used with an additional mixer to re-combine the I.F. with the local oscillator to reconstitute the H.F. to be measured.
Patent GB-438140-A (GB)
Title: Improvements relating to electric resistance alloys
IPC: C22C19/05
Filed: 1934-05-12
Abstract: An electrical resistance alloy comprises a nickel-chromium alloy containing more than 50 per cent of nickel and also 1-20 of molybdenum, 0,1-1,0 of zirconium and 0,01-0,2 of calcium.  In an example the alloy contains substantially 5 per cent of molybdenum, substantially 0,2 of zirconium and substantially 0,02 of calcium, the balance consisting of nickel and chromium in the proportions of substantially 80 parts of nickel to 20 parts of chromium.  Another alloy consists of 1-20 per cent of molybdenum, 0,1-1,0 of zirconium and 0,01-0,2 of calcium, the balance consisting essentially of nickel chromium and iron in the proportions of substantially 60 per cent of nickel, 10-15 of chromium and the balance iron.
Patent GB-836744-A (GB)
Title: Improvements in key chain attachments formed as miniature lighting devices
IPC: F21V33/00
Filed: 1958-05-06
Abstract: 836,744. Electric battery lamps. SCHMIDT, K. O., and SCHMIDT, K. W. May 6, 1958 [Feb. 22, 1958], No. 14447/58. Class 39(2) [Also in Groups XXXV and XXXVI] A pocket lamp adapted to be attached to a key ring comprises a spherical housing 1 containing a bulb 2, switch 3, a battery 6 and a half-wave rectifier 11. Outward movement of the plunger-like switch 3 completes the circuit to illuminate the bulb 2 whilst the rectifier 11 prevents the battery from discharging if the metal member 9 and the housing 1 become accidentally short circuited. The battery 6 can be recharged by placing the housing 1 in a two part plug device 7, 8 so that the member 9 and the housing 1 are in contact with members 15 of the device which are connected by way of resistors 12, 17 to the contacts 13 which are capable of being connected to a source of current.