baber/WOPTO huggingface dataset:
Patent GB-530150-A (GB)
Title: Improvements in tensioning devices for transmission chains and the like
IPC: F16H7/08
Filed: 1939-06-19
Abstract: 530,150. Chain-tensioning devices. WELLER, J. June 19, 1939, No. 17814. [Class 80 (i)] Consists in means for checking oscillations of the chain in devices wherein an adjustably mounted member is adapted to bear resiliently on a free length of the chain. In Fig. 1, the adjustable member comprises a flexible slipper S bearing on the chain C and anchored at its lower end A to the casing D. The upper end is connected to a dashpot piston P sliding in an open-ended cylinder B and loaded by a coil compression spring E bearing against the cylinder head H and tending to force the piston inwards to displace the liquid G slowly upwards past the piston. Any tendency in the chain to throw back the slipper S and thereby cause a rapid movement of the piston produces a vacuum below the piston whereby the movement thereof is opposed by atmospheric pressure on its upper end which pressure augments the thrust of the spring E. Oscillations of the driving side of the chain are checked by a steady pad J. In a modification, the piston is of larger area and the upper end of the slipper bears against a slide on the casing. In Fig. 3, a rigid slipper S is connected to the piston through togglelinkage M, N. In a further modification, the adjustable member S comprises a jockey pulley. In Fig. 5, the dashpot is disposed horizontally and submerged in an oil bath so that atmospheric pressure on the surface T of the oil acts upon the exposed end of the piston. A ball valve O may be provided. In all cases, as the tensioning device advances to take up slack, the dashpot piston moves into the cylinder. Specification 484,128 is referred to.
Patent GB-685653-A (GB)
Title: Improved refill pencil
IPC: B43K21/08
Filed: 1950-07-17
Abstract: 685,653. Pencil holders. ZAHEL, J. July 17, 1950. [July 17, 1949] No. 17834/50. Class 146 (iii). A pencil holder comprises a casing 1 and point member 5 rotatable relatively to one another, but secured against relative longitudinal displacement, and a propelling mechanism for leads consisting of a screwed spindle 3 carrying a pin 4 and engaging a thread 2 in the casing 1. The point member 5 has internal guide ribs 11, 11<SP>1</SP>, and 11<SP>2</SP> projecting towards the pencil axis to engage slots 12, 12 and 12<SP>2</SP> in the spindle 3 to prevent rotation of the spindle with the casing 1. The innermost surfaces 14, 14<SP>1</SP>, and 14<SP>2</SP> of the ribs form a guide for leads. The point member 5 has a collar 8 at its upper end which is split by radial slits 9, whereby, when the collar is inserted in the casing 1 it is first compressed and then engages behind a ledge 10, thus securing the point member 5 against longitudinal movement relative to the casing 1. Compartments 16 are provided for spare leads. The spindle 3 and pin 4 may be made of synthetic plastic material.
Patent GB-596004-A (GB)
Title: A protective device for use in conjunction with an infant's napkin or other articlesof infants' wear
IPC: A61F13/15
Filed: 1945-07-13
Abstract: 596,004. Infants' napkins. COLLENETTE, M. N. July 13, 1945, No. 17928. [Class 141] [Also in Group VI] A protective device for infants for use in conjunction with a napkin, knickers &c. consists of a water-proof container 10 of rectangular shape having widely turned in edge portions 11 forming a pocket adapted to receive a pad of absorbent material 12. A transverse strip of material 13 is provided to retain the pad in position.
Patent GB-625363-A (GB)
Title: Improvements in or relating to labelling machines
IPC: B65C9/08
Filed: 1947-07-08
Abstract: 625,363. Labelling-machines. NEWMAN, R. J., and FRIEND, D. S., (formerly FREUND, D. S.). July 8, 1947, No. 17965. [Class 73] A bottle &c. labelling-machine comprises a pair of horizontally reciprocable spaced gum plates which successively pass under a gum roller. pick off a label, and pass on to a transfer position, where a grip pad presses the label down between the gum plates on to a bottle so that further downward movement of the grip pad and the bottle removes the label from the gum plates which are then withdrawn horizontally while the bottle is raised against pressers. A cam 33 on a shaft 21- operates a spring- controlled lever 30 to reciprocate a block 27 carrying gum plates 23, 24 along rods 28 from a forward transfer position, through a label picking position to a rearward gumming position. A roller 35 supplied with gum by rollers 40, 42 is actuated by a cam, lever 39, spring 38, and levers 37, 36 to transfer gum to the gum plates 23, 24. The rollers 40, 42, and 35 are geared together and driven by a chain 44, and sprocket 45. Six vertical holding fingers, two of which are shown at 72, 74, having incurved lower ends form an adjustable vertically reciprocable base for holding a pile of labels which are pressed down by a spring 76 and a plunger 77. The gum plates withdraw the bottom label from a pile and carry it forward to the transfer position above a bottle 80 supported in a cradle 81 vertically reciprocable by a cam, lever 84 and spring 85. Above the centre of the gum plates 23, 24 and the label, a grip pad 90 operated by a cam through a lever 95, rod 93 and lever 92 against a spring 96 is carried by a vertical rod 91 so that the grip pad 90 descends until the central part of the label contacts the bottle 80 whereupon the grip pad 90 and the bottle 80 descend and bring the label through the gum plates. Upon retraction of the gum plates the bottle 80 and the grip pad 90 ascend and the label is pressed firmly on to the bottle by presser blocks 87, 88. In a modification, a subsidiary gum plate 100, Fig. 16, is bolted to the rear of the gum plates 23, 24 to gum the label centrally during an extra traverse of the label base when the carrier 27 is in the transfer position. The extra gum plate may be replaced by a type holder which can be inked by an inking roller in which case the rear of the label is printed centrally. Specification 581,853 is referred to.
Patent GB-1120919-A (GB)
Title: Improvements in potato and root-crop lifters
IPC: A01D17/10
Filed: 1967-04-19
Abstract: 1,120,919. Root-crop harvesters. A. UNDERHAUG [trading at F. A. UNDERHAUG FABRIK], 19 April, 1967 [22 Nov., 1966], No. 17978/67. Heading A1F. A potato-harvester, having two side-byside endless conveying belts 3, 8, running in opposite directions, transverse to the direction of travel of the machine, the material being transferred from the front belt 3 to the rear belt by a barrier 4 arranged obliquely above one end of the front belt, is characterized in that a conveying device 7 is mounted above the adjacent end of the rear belt and is driven in the opposite direction to that end of the belt so as to remove weeds and haulms from the rear belt. The machine described is generally similar to that described in Specification 981,110 and comprises a frame attached to tractor lift-links and supported on two non-aligned ground-wheels. Crop dug by a share 1 is thrown by a spinner 2 on to the lower end of the front conveyer 3 and is transferred by the oblique barrier 4 at the upper end, to fall on to the lower end of the rear conveyer 8 where it is sorted by operators standing on a platform 9. The conveying device 7 comprises a roller mounted on an extension of the upper spindle 6 of the front conveyer-belt, the roller having a ribbed rubber surface. In a modification (Fig. 4, not shown), the roller 7 is replaced by a short belt conveyer having a similar ribbed surface.
Patent GB-995345-A (GB)
Title: Improvements relating to direct-coupled transistor amplifiers
Inventor: BARTLETT CHARLES JOHN CLIFFORD
IPC: H03F1/30
Filed: 1961-05-17
Abstract: 995,345. Transistor circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 26, 1962 [May 17, 1961], No. 17994/61. Heading H3T. A direct coupled amplifier, Fig. 1, comprises a signal input it, a reference input rt and a capacitor C connected to the reference input to provide a reference voltage, the arrangement being such that the capacitor C is charged from the output ot1 of the amplifier during times when no input is present at the signal input. As described with reference to Figs. 2, 3, 4, the first stage of the amplifier comprises two transistors VT1, VT2, forming a longtailed pair to which the signal input it and reference capacitor C, are connected respectively. The push pull output from this first stage is limited by diodes MR1, MR2 and fed via emitter followers VT12, VT13 to a further longtailed pair comprising transistors VT3, VT4, the output from which is again limited by diode MR3 . . . MR7 and fed to emitter follower output stages VT5, VT6. During intervals in the input signal, for example during the signalling channel period in a pulse code modulation system, a pulse is applied to terminal tt, which cuts off diode MR8 allowing transistor VT11 to become conducting charging capacitor C via resistor R from the amplifier output ot1 to provide a reference input voltage for the next period of input signal. In order to ensure that the output ot1 ot2 are zero in the absence of input signals, Zener diodes MRZ1, MRZ2 are provided which effectively clamp the output to earth during zero input conditions. The outputs ot1, ot2 are fed from the amplifier to trigger a bi-stable circuit comprising crosscoupled transistors VT7, VT8, via a push-pull gate pp comprising four silicon diodes MR10 . . . MR13 which suppresses any output signal of insufficient amplitude. In order to ensure symmetrical triggering, the emitter of transistors VT7, VT8 and the cathodes of two germanium diodes MR14, MR15 are connected to a positive potential of 0À15v.
Patent GB-222961-A (GB)
Title: Improvements in loud speaking telephones
IPC: G10K11/02
Filed: 1923-07-11
Abstract: 222,961. Graham, E. A. July 11, 1923. Sound magnifying and directing appliances.- A trumpet for a loud-speaking telephone has a horizontal U-shaped portion b, of increasing cross-sectional area from the circular inlet to the rectangular outlet a, and a vertical portion c adapted to support the receiver in such a way that the smaller end of the conduit terminates behind the flaring mouth. When the receiver is applied the whole combination does not occupy a greater horizontal and vertical elevational space than the flaring mouth a. The flared end portion of the trumpet is made of wood, the U-shaped portion b of metal, and the vertical portion c may be of non-sonorous material, such as rubber, and may be ribbed as at f to impart rigidity. The portions may be joined together with the aid of interposed material such as rubber, the flared portion a being joined to the portion b as described in Specification 217,675. The flared portion a may have one side wall flat and vertical, the opposite side wall convex to the interior and vertical, the top wall convex and extending horizontally and the bottom wall flat and horizontal. Specifications 15369/15 and 220,990, [both in Class 40 (iv), Telephones &c.], also are referred to.
Patent GB-901181-A (GB)
Title: Improvements in or relating to photocopying apparatus
IPC: G03G15/26
Filed: 1957-06-06
Abstract: 901,181. Printing processes. OZALID CO. Ltd., and FIRMINGER, A. R. Sept. 8, 1958 [June 6, 1957], No. 18008/57. Class 100 (2). [Also in Group XX] In a xerographic printer (see Group XX), a powder image is transferred from a xerographic plate 5 to a continuous web 16 as it is brought into contact therewith on moving transfer device 20 over the face of the plate. Contact between the web and plate may be maintained by suction, and the transfer may take place under the influence of a corona discharge. During transfer, the web is fed and the powder image fixed by infra-red heater 24. Cutting and trimming devices for delivering separate sheets may replace take-up roll 27.
Patent GB-462510-A (GB)
Title: Improvements in two-row ball bearings
IPC: F16C33/60
Filed: 1936-06-29
Abstract: 462,510. Ball bearings. UNIVERSAL-KUGELLAGER-FABRIK GES. June 29,1936, No. 18024. Convention date, June 27, 1935. [Class 12 (i)] A bearing has two rows c, c<1>, of load-supporting balls each row having a separate row of spacing balls d, d<1>, surrounded by guide rings e, e<1>. The spacing balls d, d<1>, also bear on an additional guide ring h, which is supported by a ring i, which may be of bronze to reduce the friction between it and the ring h. The latter may be divided transversely. The Specification as open to inspection under Sect. 91 comprises also a construction in which the rings i, h, are omitted and in which the guide rings e, e<1> are integral with one another. This subject-matter does not appear in the Specification as accepted.
Patent GB-182785-A (GB)
Title: Improvements in and relating to methods and means for regulating steam power and heating plants
IPC: F01K7/00
Filed: 1922-06-30
Abstract: 182,785. Schmidt'sche Heissdampf Ges. July 11, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Draught, regulating; stoking.-In a steampower plant in which the exhaust steam is used for heating purposes, the rate of combustion in the boiler furnace is controlled by the pressure of the exhaust steam. This may be effected, as shown, by a pressure -controlled device C connected with the flue damper D. When a chain grate is used, instead of the step grate shown, the rate of fuel feed is controlled in addition to the air supply.
Patent GB-205857-A (GB)
Title: Improvements in spring suspension systems
IPC: B62K25/24
Filed: 1922-06-30
Abstract: 205,857. Meredith, F. W. June 30, 1922. Spring devices.-A spring system suitable for use in the suspension of motor-cycles &c. is arranged so that one or more main springs acting through a suspension arm or lever take the whole normal load in such a manner that when the strain increases the effective leverage of the spring decreases, and one or more restoring springs are provided to stiffen the whole suspension or increase the resistance for relatively large displacements. As applied to a motor-cycle, the main spring D is arranged at an angle to the lever A while the restoring spring E is mounted as shown. In some arrangements the pivot of the lever A may be adjusted relatively to the fixed frame in accordance with different static loads; this may be done automatically by means of the oscillations operating free wheels through a selector mechanism, or the oscillations or the engine of the vehicle may operate a fluid motor.
Patent GB-1212638-A (GB)
Title: Alkaline-earth metal halophosphate luminescent composition activated by divalent europium
IPC: C09K11/08
Filed: 1969-04-09
Abstract: 1,212,638. Luminescent materials. WESTINGHOUSE ELECTRIC CORP. 9 April, 1969 [3 May, 1968], No. 18133/69. Heading C4S. A phosphor comprises a divalent Eu activated halophosphate of an alkaline earth metal, the halogen being at least one of F, Cl and Br. The phosphor is prepared by mixing the constituents with an excess of alkaline earth metal halide beyond. that required to provide the exact proportions such that halide provides at least 10 atom per cent of alkaline earth metal in the mix, firing the mixture in a reducing atmosphere and dissolving excess metal halide from the fired composition. Sr chlorophosphate is prepared from a mixture of SrHPO 4 , SrCO 2 , SrCl 2 . and EuCO 3  with additional SrCl 2  to act as a flux - during-firing in an alumina container at 1100 C. in N 2 -H 2  atmosphere. The fired material is broken up and excess SrCl 2  is washed away leaving particles which may be refined with NH 4 Cl. The resulting particles are shaped as hexagonal prisms. Ba and Ca may be substituted for Sr and F for Cl in percentages from 0 to 100. Eu 2 O 3  and EuCl 3  may replace EuCO 3 . Small amounts of Al added as Al(OH) 3  may replace Sr.
Patent GB-146290-A (GB)
Title: Improvements in marine water tube boilers
IPC: F22B17/02
Filed: 1919-03-07
Abstract: 146,290. Power Specialty Co., (Assignees of Bell, J. E.). March 1, 1918, [Convention date]. TVater-tube boilers; casings; supporting.-In a water-tube boiler having straight tubes 5 connected to single headers or water slabs 4 at the front and back, the tubes and headers are enclosed by a casing 19 rigidly secured to the headers, and the whole structure is supported upon the furnace walls 23. Lugs 16 riveted to the headers rest in cradles 17 at the corners of the furnace walls. The casing is bolted to pads riveted to the headers. The side walls are formed of fire-brick 22 and heat-insulating material 21.
Patent GB-182708-A (GB)
Abstract: 182,708. Ritson, C. July 29, 1921. Reversing - gearing comprises driving and driven grooved friction drums p, q adapted to be connected alternatively by a single idler n or by mutually engaging idlers m, k for driving in one or the other direction. In a form shown in Figs. 1 and 2 specially adapted for winches, a brake 12 is automatically applied in a neutral or no-drive position to the drum q. The idlers are supported in adjustable bearings j in a frame h, which rocks about the driven shaft c and is adapted to be operated by a rod r. The idler k is of two diameters to engage properly the drum q and idler m. The brake 12 slides in vertical guides 15 and is thrust upwards in the mid position of the frame h by toggle-links 17 pivoting upon a through pin v. A modification suitable for driving motor-boats, and upon 'motor-cars, is shown in Fig. 9. In this the drum p is driven through a toothed gear pair 3, z from the engine shaft 4 in line with the propeller shaft 6 carrying the driven drum q. The frame h in this case is rocked by a rack 8 and pinion 9 operated by a hand-wheel 11.
Patent GB-693670-A (GB)
Title: Improvements in or relating to thread gauges
IPC: G01B3/40
Filed: 1951-08-02
Abstract: 693,670. Linear-dimension gauges; gauging screw-threads. WILLS, S. A., GATHERCOLE, E. F. J., and TOLIMIT GAUGES, Ltd. Aug. 2, 1951, No. 18315/51. Class 106 (ii). A thread gauging attachment for use with a vernier-type calliper gauge A<SP>1</SP> of the usual kind comprises two thread-gauging members each having a support C for a thread-engaging member F and means G for removably securing the support C to the working face C<SP>1</SP> of the associated jaw A, the thread-gauging attachments being so dimensioned that, when the jaws are closed to cause the members F to contact one another, the distance registered by the gauge is a predetermined unit or number of units A<SP>2</SP> on the calliper gauge A<SP>1</SP>. Each threadengaging member F may be in the form of a roll carried on a pin E projecting from the support C, the pin E being either parallel or at, right angles to the length of the support C. The securing means G may be a clip having an aperture through which the support C and a part of the jaw A pass, a clamping screw G<SP>1</SP> serving to clamp each securing means G in position.
Patent GB-1166898-A (GB)
Title: Heat exchangers
Inventor: ANDREW RONALD VINCENT
IPC: B21D39/06
Filed: 1967-04-21
Abstract: 1,166,898. Repairing heat exchangers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 10 April, 1968 [21 April, 1967], No. 18490/67. Headings B3A, B3J and B3Q. A method of repairing a leak between a tube and a tube plate of a heat exchanger, or of repairing a puncture or strengthening a weak area in a tube, comprises detonating an explosive charge inside the tube in the region of the tube plate, or inside a metal lining tube covering a puncture &c., while the shell side of the tubes is at superatmospheric pressure, so as to expand the tube or tube lining and seal the leak. The shell side of the heat exchanger may contain a fluid such as water at 120‹ C. A shatterable, non-adherent force transmitting material may be used, and if the heat exchanger is hot the transmission material should have a melting point at least 20‹ C. higher than the temperature of the heat exchanger.
Patent GB-771054-A (GB)
Title: Improvements in wrapping machines
Inventor: ROSE ALFRED GERMAN
IPC: B65B35/24
Filed: 1954-06-24
Abstract: 771,054. Wrapping-machines. ROSE BROS. (GAINSBOROUGH) Ltd. June 16 1955 [June 24, 1954], No. 18504/54. Class 94(1). [Also in Group XXX] A wrapping machine of the kind in which sweets are fed by a conveyer band in close file end-to-end to a transfer station at which the leading sweet passes into the pocket of a rotatable wheel, either directly from the end of the file or by being transferred laterally by a pusher, comprises gripping means adapted, as the leading sweet reaches the transfer station temporarily to arrest forward movement of all but the leading sweet so as to allow relative longitudinal. movement between the leading sweet and the remainder to separate the end face of that sweet from that of the succeeding sweet. In Figs. 1 and 2, the leading sweet 11 of a file is fed horizontally between guides 10 by a, conveyer belt 12 directly into a pocket 13 in a wheel 14. A pair of grippers 16 then grip the second sweet in the file and move backward to draw the remaining sweets away from the leading sweet. The wheel 14 is then rotated one step to position the next pocket in line with the belt 12 and to carry the leading sweet towards a further transfer station at which it is transferred by a pusher 27 to a pocket in a wrapping wheel 26. The grippers are pivotally and slidably mounted on a shaft 17 and spring- urged towards each other. Rollers 18 carried by extensions 19 on the grippers engage an opening cam 21. The grippers are moved forwardly by an arm 22 operated by a cam 24 and rearwardly by a spring 20. In a modification, Fig. 3, the leading sweet 11 is arrested by a movable stop 25 before it has completely entered the pocket 13 and a cam-operated trapping member 127 is then moved into an engagement with the second sweet. The stop is then withdrawn to free the leading sweet for further movement into the pocket by the belt 12. In a further modification, Fig. 6, the leading sweet 11 is arrested by a, movable stop when opposite a pocket 29 in an intermittently-rotatable wrapping wheel 31. The stop is then moved to push the file backwards, the second sweet is trapped by a member 33 and the stop returned to its original position to allow the leading sweet to be moved forward again by the belt 12. The sweet is then transferred to the pocket 29 by a pusher 32. Alternatively, the stop may arrest the leading sweet in advance of the transfer position, the trapping member operating as before and the stop being retracted to allow final movement of the sweet to the transfer position. Specifications 738,302 and 739,911 are referred to.