baber/WOPTO huggingface dataset:
Patent GB-163544-A (GB)
Title: Improvements in devices for supporting cards, folders or the like in card index and vertical filing systems
IPC: B42F17/02
Filed: 1920-03-20
Abstract: 163,544. Skelding, E. March 20, 1920. Locking - followers. -A device for supporting cards or the like in vertical cardindex systems of the kind which retains itself in position in the drawer is formed of a strip a of springy material adapted to be flexed to exert a lateral pressure on the sides of the drawer, its ends being provided with pads b of rubber, felt, wood or the like. In a modification, the support is formed of spring wire bent into a series of waves and provided with rearwardly-bent feet to rest on the bottom of the drawer, the number and height of the waves varying according to the width of the drawer and the height of the cards.
Patent GB-732403-A (GB)
Title: Improvements in gas protected arc welding apparatus
Inventor: BENGTSSON GUNNAR
IPC: B23K9/067
Filed: 1953-03-27
Abstract: 732,403. Supply systems for welding arcs. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. March 27, 1953, No. 8498/53. Class 38 (4). An A.C. arc welding apparatus which embodies a device not shown for supplying a protecting inert gas to the arc and a device 13 for igniting the arc with highfrequency alternating current comprises a transformer 11 having but small leakage reactance and a current determining device, e.g. an adjustable resistance 12, which is at least 50 per cent resistive. This apparatus reduces, with respect to a welding circuit which is largely inductive, the partial rectification which obtains when welding between a tungsten electrode 14 and, e.g., an aluminium workpiece 15.
Patent GB-689189-A (GB)
Title: Improvements in or relating to variable inductances
IPC: H01F21/00
Filed: 1950-04-05
Abstract: 689,189. Inductances. SULLIVAN, Ltd., H. W., and GRIFFITHS, W. H. F. April 4, 1951 [April 5, 1950], No. 8577/50. Drawings to Specification. Class 38 (ii). A variable inductance of the type having at least one coil rotatable with respect to at least one other coil, in which at least one range of self inductance and one range of mutual inductance are provided and which requires only one accurate calibration, is provided with at least one further inductance coil connected in series with one of the first-mentioned coils, the further inductance coil being so arranged and adjusted in value that cardinal values of both self and mutual inductance are obtained at the same relative positions of the first-mentioned coils. The calibration of the inductance may be carried out in self or mutual inductance terms as convenient. Preferably the further inductance coil should have no magnetic coupling with either of the first-mentioned coils.
Patent GB-402979-A (GB)
Title: Improvements in the manufacture of hot billets and the like
IPC: F27B9/28
Filed: 1933-03-22
Abstract: 402,979. Billet-heating furnaces. STEW ARTS & LLOYDS, Ltd., 41, Oswald Street, Glasgow, and McLAY, G. S., Braziers, Chipperfield, Hertfordshire. March 22, 1933, No. 8619. [Class 51 (ii).] In a furnace for the production of hot billets in which metal pieces 4 are connected end to end by welding 5, 6 into lengths from which the billets are cut, a number of the lengths 4 are fed side by side through the furnace 1 on spaced transverse supports 3 which are arranged above a series of burners 2 disposed intermediate the ends of the furnace. To prevent the formation of cold spots, the feed rollers 9, 10 are operated to reciprocate the lengths 4 longitudinally within the furnace ; when it is desired to cut off a length necessary for a billet, the rollers 9, 10 are operated so as first to eject, through the discharge opening 11, the necessary length which is cut off by a hot saw 12, and then to draw the remainder of the bars 4 back into the furnace. The length of the cut billet is determined by the position of an adjustable stop 16<1>, while a hood 13, filled with a suitable gas, is provided to prevent excessive scaling of the ejected length. The supports 3 are formed with channels 20 for air or water cooling and, as shown in Fig. 2, are supported at the middle by brickwork piers 16 which may also be air or water cooled. The members 3 may either be formed with projections 17 which provide spaced parallel tracks for the bars 4, or have welded to their upper surfaces facings of heat-resisting steel having curved upper surfaces on which the bars 4 slide.
Patent GB-659284-A (GB)
Title: Improvements in integrating meters of the rotating disc type
IPC: G01R11/10
Filed: 1949-03-30
Abstract: 659,284. Eddy current-brakes. METROPOLITAN-VICKERS -ELECTRICAL CO. Ltd. March 30, 1949, No. 8676. Convention date, March 30, 1948. [Class . 103 (i)] [Also in Groups XXII, XXXV, and XXXVI] In an induction type integrating meter, Fig. 1, the brake magnets 18 are magnetically anistropic C-shaped permanent magnets embedded in a die cast frame 14 of non-magnetic material. In Fig. 1, the shaft 5 supporting the rotor or disc 4 is mounted for rotation on one side of the die-cast frame 14 with part of the disc projecting through a slot 15 for co-operation with voltage and current driving magnets 10, 12 mounted on the other side of the frame. The pole faces of the brake magnets 18 extend through the die-cast material. to embrace the periphery of the disc 4 as illustrated in Fig. 1. The Specification, however, states that the pole faces may be covered by a thin die-cast wall. Embedded with each magnet is a C- shaped magnetic shunt 21, Fig. 2 (rear side of frame 14), having a negative temperature coefficient of permeability, thus to provide temperature compensation. The shunts 21, made of carpenter steel, a nickel-iron alloy containing about 29 per cent nickel, are cemented to the one side of the magnets 18 so that in the die casting operation (see Group XXII), the magnets 18 rendered anistropic but not magnetized, form inserts each with a shunt attached. The permanent magnets may. be produced and treated by the method described in U.S.A.. Specification 2,295,085, and the meter bearings may be of the magnetic suspension type described in Specification 550,788, [Group XXXVI].
Patent GB-256891-A (GB)
Title: Waste preventing or economising devices for taps, ballvalves, gas or water pipes and fittings
IPC: F16L55/027
Filed: 1926-03-31
Abstract: 256,891. Hewett, G. F. March 31, 1926. Fuids, regulating volume of flow or pressure of.-A choke plug or economising cone for use in gas or water services comprises a tapered plug b, Figs. 1 and 3, provided with a small calibrated axial aperture c and fitted with a closely-fitting sheath d of cork &c. for securing the same frictionally in the inlet to a tap, as shown, or in gas or water pipes or fittings.
Patent GB-526538-A (GB)
Title: Improvements relating to press guards
IPC: F16P3/04
Filed: 1939-03-20
Abstract: 526,538. Machinery guards. E.M.B. CO., Ltd., CATLIN, L. A., ABBERLEY, J., and WOODMAN, P. T. March 20, 1939, No. 8788. Addition to 467,127. [Class 80 (iv)] The parent Specification describes a press guard having a vertically pivoted gate or gates, a slidable member connected to the starting mechanism, and a catch or catches slidable transversely to the said member and operable by the gate or gates for locking the said member so that the press cannot be started unless the gates have been closed. The invention comprises the combination with the or each gate of another catch for locking the punch or plunger, particularly when actuated by a crank, in its upper position when the gate is open. The gate b is pivoted on a spindle e, is foldable at o and is actuated by a handle c. The free end has a roller p running in a guide q at the upper side of a support f. The spindle e carries a cam g adapted to force a bar h into a slot k in a starting rod j when the gate is open, as described in the parent Specification. The spindle e now carries a pinion s engaging a rack t integral with another catch u adapted to enter an aperture in a boss of the crank-shaft w to lock it when the plunger is in its uppermost position and the gate open. A fixed guard n with side portions is also provided.
Patent GB-590035-A (GB)
Title: Improvements in interpolymers
IPC: C08F20/12
Filed: 1945-04-10
Abstract: Acetone-soluble interpolymers are prepared by heating together in the presence of a catalyst styrene or a nuclearly substituted styrene, an allylic acrylate of the formula CH2=C(R)-CO-O-CH2-C(R)=CH2 in which R is hydrogen, alkyl or halogen and an allylic alcohol of the formula <FORM:0590035/IV/1> to a point short of gelation.  The allylic alcohol comprises at least 10 per cent of the total monomers.  The allylic acrylate may be allyl or methallyl acrylate, allyl or methallyl methacrylate, allyl a -chloroacrylate or 2-chloroallyl methacrylate.  Suitable substituted styrenes are p-methyl- and p-chloro-styrenes. Suitable allylic alcohols are allyl, 2-chloroallyl, 2-methylallyl and 2 - ethylallyl alcohols.  Suitable catalysts are benzoyl peroxide, acetyl peroxide and tert-butyl hydroperoxide. Polymerization may be effected in the presence of carbon tetrachloride.  The reaction may be stopped by addition of hydroquinone or tert-butyl catechol or by cooling.  The product may be purified by dissolving in acetone and precipitating with gasoline. Insoluble infusible products may be obtained by heating the product, e.g. in solution in a mixture of acetone and cyclohexanone, if desired in the presence of another monomer, e.g. vinyl acetate or butyrate, methyl, n-butyl, isobutyl or tetrahydrofurfuryl acrylates, methyl methacrylate, diallyl phthalate or adipate and/or a catalyst. The copolymers may be modified by reaction with alkyl and acyl halides, acids and their anhydrides or isocyanates to form polymeric ethers, esters and carbamates.  Baking enamels may be made by adding pigments, e.g. rutile, to a solution of the interpolymer, e.g. in a mixture of n-butanol, xylene and butoxy ethoxyethyl acetate.
Patent GB-216983-A (GB)
Title: Improvements in or relating to hay and straw presses
IPC: A01F1/00
Filed: 1923-03-29
Abstract: 216,983. Thomas, J., Thomas, J., and Thomas, F. March 29, 1923. Drawings to Specification. Apparatus fitted to trussing devices. - The platform of a straw or hay trussing machine is carried on spring supported rods and is adapted to engage one end of a pivoted needle the other end of the needle indicating when the desired quantity of straw or hay has been placed on the platform.
Patent GB-813480-A (GB)
Title: Improvements in or relating to selector switches
Inventor: HUBBARD ERIC WILLIAM CHARLES
IPC: H01H67/16
Filed: 1954-03-26
Abstract: 813,480. Automatic exchange switches. POSTMASTER GENERAL. Sept. 2, 1955 [March 26, 1954], No. 8974/54. Class 40 (4). In a two-motion selector adapted to have rectangular release, an auxiliary cam is locked in a position to operate level springs but is released and retracted after the wiper carriage exceeds a predetermined degree of rotation. A cam 1, fast with switch shaft 2, operates offnormal and eleventh step springs in known manner. The auxiliary cam 4 with spring operating arm 5 has angular movement about the shaft 2 to the extent permitted by arm 5 and an abutment 13 which engage a comb plate 3. Between the cams 1 and 4 lies a latch plate 9 which in the normal position of the selector occupies the position shown in Fig. 1 where a projection 15 on an arm 12 locks cam 4 in its operative position. When the shaft 2 steps round, a pin 6 on cam 1 engages edge 17 on latch plate 9 projecting it to the left and placing the projection 15 in register with a notch 10 of the cam arm 5. The pin 6 also engages edge 7 on cam 4 and turns the cam clockwise to move arm 5 against comb 3. When the selector reaches normal, the pin 6 moves back to the position illustrated, engaging surface 16 of latch plate 9 to force this to the right so that projection 15 rides on the sloping edge of notch 10 to move arm 5 back into position. The alternative construction of Figs. 3 and 4, not shown, uses a latch plate with cam surfaces 16 and 17 shaped so as to move the plate to the right to disengage the extreme end of the cam arm 5.
Patent GB-764765-A (GB)
Title: Improvements relating to brushes for electrical machines
IPC: H01R43/14
Filed: 1955-03-28
Abstract: 764,765. Collecting gear for dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). March 28, 1955, No. 9008/55. Addition to 734,487. Class 35. The wear of brushes or of commutators or slip-rings of a dynamo-electric machine is reduced by introducing lubricating vapour to an enclosure surrounding the commutator or sliprings, the vapour source being located within the frame of the machine. A commutator 1 in Fig. 1 is enclosed by a shield comprising plates 74, 75 and by interposed blocks of insulating material 78. The blocks 78, as shown in Fig. 2, have holes 79 filled with a wick or porous material 82 in which the vapour source is retained. The Specification mentions water and several organic substances and compounds, in solid or liquid form, as vapour producers. Preference is made to certain organic materials having a molecular area of from 20 to 6000 Š<SP>2</SP> and a molecular chain length of from 6 to 400 A, a vapour pressure at 100‹ C. of less than 20 mm. Hg, and a molecular weight of from 30 to 9000. The heat generated at the commutator surface facilitates the evaporation of the vapour source. Fig. 4 shows a modified commutator cylindrical enclosure 47 to be fitted as in Fig. 3 (not shown). The enclosure 47 has brush-holder apertures lined with insulating strips 68, 69 and apertures having flanges 84-87 to receive the blocks containing the vapour producing material.
Patent GB-216079-A (GB)
Title: Improvements in or relating to lingerie clasps
IPC: A41F15/02
Filed: 1924-04-09
Abstract: 216,079. Wilson Fastener Co., (Assignees of Clark, E. E.). June 2, 1923, [Convention date]. Clips, flexible-jaw. -In a lingerie clasp of the type comprising a U-shaped metal strip secured by a snapfastener, one limb 10 of the clasp is dented outwardly at 15 to provide a small cup-like depression in which is soldered or otherwise fixed the dome 33 of the socket member 30 of the fastener, which dome projects beyond the edge 31 of the socket member. The snap-fastener is of the type containing an engaging spring 41, and the limb 11 of the clasp has a pressed-up spring portion 13.
Patent GB-658562-A (GB)
Title: Improvements in apparatus for dampening pulsations in gas streams
IPC: F04B39/00
Filed: 1949-04-04
Abstract: 658,562. Silencing gaseous currents. DEHN, S. G. (Fluor Corporation, Ltd.). April 4, 1949, No. 9118. [Class 7(ii)] In apparatus for dampening pulsations in' a gas stream comprising a casing 10 containing a pair of chambers 14, 15, and gas inlet and outlet openings 11 and 12 communicating, respectively, with the chambers, a conduit extending directly from one of the openings and including a restricted tube 16 of greater length than the casing and terminating in one of the chambers, there is provided a surge passage connection 18 connecting the conduit with the other chamber, which latter is closed except for its surge passage communication with the conduit. The casing 10 has a transverse partition 13 through which the folded tube 16 passes several times; the tube acting as an inductance. The chambers 14 and 15, formed by the partition, are preferably of equal size and constitute capacitances. Tube 16 opens at one end into inlet chamber 14 and is connected at the other end in chamber 15 to the enlarged outlet 12. which outlet embodies the surge passage 18. In a modification, adapted for use as a manifold silencer by providing a number of transverse inlets into the casing, the partition is replaced by an internal casing through the walls of which the inductance tube passes as described above. The surge passage opens into the internal casing and the direction of gas through the silencer may be reversed. The apparatus may be used on the intake' of the exhaust side of a piston compressor. Specifications 605,054 and 627,074 are referred to.
Patent GB-1453918-A (GB)
Title: Vacuum holding device
IPC: B25B11/00
Filed: 1975-03-05
Abstract: 1453918 Vacuum work-holders T F HALE 5 March 1975 [29 March 1974] 9141/75 Heading B3D A vacuum werk-holder comprises a vacuum wall plate 86, Figs. 1 and 3, mounted on support means 86 and having a front surface against which workpieces are held, the cell plate housing a plurality of ares 76 about which are sealing means 78, conduit means 102 for connecting the areas to a vacuum source and including valve means each of which has a passageway having a valve seat 116 and a valve member 126 movable against the seat to close the passageway, and actuating means for determining when its associated cell area is completely covered by a workpiece and opening the cell area to the vacuum source, the actuating means including means 128 holding the valve member away from the seat and then disengaging the valve member for movement against the seat solely by the movement of air from the cell area when said area is not completely covered. The embodiment shown in Figs. 1 and 3 is arranged for operation in a vertical position (i.e. at 90 degrees to the position shown in Fig. 3) and for holding-a veneer flitch against the seal 78  on the front plate 90 of the work-holder, sharpened pins 94 engaging the workpiece to prevent sliding movement thereof. The front plate is secured to the support means 80 which is in the form of a plate also secured to a base-plate, a rubber sheet 96 being disposed between the plates 80, 82. Cavities 100 in the plate 80 are connected by passageways 102 to a vacuum source and register with cavities 98 in the baseplate 82 connected to a source of compressed air. A valve body 110 associated with each cavity 100 has a passageway 122 in communication with its respective cavity 100 and has opposed valve seats 116, 124 between which is a valve member 126 in the form of a rubber ball. Each valve means is associated with an actuator means comprising a plunger 128 formed by the shank of a screw clamped to the rubber sheet 96. A spring 138 urges the plunger away from the valve ball. When compressed air is supplied to cavities 98, the balls 126 are held by the plungers 128 against the valve seats 124 thus closing the passageways 122, the cavities 100 being evacuated by being connected to the vacuum source. The balls are held against the seats while the workpiece is placed against the work-holder. The compressed air is then disconnected from the cavities 98 so that the springs move the plungers 128 away from the balls. If the cell area is not completely covered by the workpiece, the flow of air from the area causes the ball to close the passageway 122 by engagement with the valve seat 116. If the area is completely covered, the flow of air from the cell area is not sufficient to move the ball against the seat 116 and the ball will drop downwardly to a position shown in Fig. 2 between the seats 116, 124. In another embodiment arranged for use in a horizontal position, the movement of the ball towards the valve seat when the cell area is completely covered is resisted by a calibrated spring.
Patent GB-1469212-A (GB)
Title: Apparatus for forming tubular thermoplastics film
IPC: B29C48/90
Filed: 1975-03-05
Abstract: 1469212 Cooling blown extruded film MOBIL OIL CORP 5 March 1975 [6 May 1974] 9205/75 Addition to 1469211 Headings B5A and B5B A tubular thermoplastics film which is formed by internal air pressure inflation of a tube 26, Fig. 1, extruding from a die 22, is internally cooled by air discharged through apertures 43 in the surface of a surrounding housing. The apertures 43 comprise the outlets of channels arranged in pairs of rows 42a, 42b, extending circumferentially of the extruding tube, and with the channels of each row of a pair being directed away from those of the other row of the pair, and each towards an air outlet passage 46 from the housing provided between adjacent pairs of rows. The improvement of the present invention comprises providing each pair of rows in an insert 40, releasably attached to the housing, e.g. for cleaning.  The housing comprises a stack of members 34 which are releasably clamped together and which each have an internal chamber 32 through which the air is delivered to a pair of the rows of channels 42a, 42b, Fig. 5. The members 34 are clamped together at bosses 48, Fig. 2, which define the passages 46 between the remainder of the surface of adjacent plates, and which are provided with bores 38 clamped in alignment to define peripherally spaced passages through which the air is delivered from a pump 36 to the chambers 32, via slots 49 connecting the bores 38 with the chambers 32. The plates 34 are secured together by rods passing through recesses 51. The upper members may be replaced to change the diameter of the inflated tube. The chambers 32 may be provided with internal ribs stiffening the plates 34. The housing surface surrounding the extruding tube is of conically, or paraboloidal form, diverging at less than 60 degrees, and preferably less than 50 degrees. The channels 42a, 42b may be cylindrical, or convergent. The cooling air prevents contact of the extruding tube with the housing surface, and the tube is drawn towards the air by a pressure drop in the areas 44, Fig. 5, between the rows of a pair, and between each row and a passage 46.
Patent GB-693279-A (GB)
Title: Improvements in and relating to glass tube bending apparatus
IPC: B29C53/08
Filed: 1952-04-10
Abstract: 693,279. Glass tubing. BRITISH THOMSON-HOUSTON CO., Ltd. April 10, 1952 [April 10, 1951], No. 9252/52. Class 56. Apparatus for forming a U-shape bend in a length of glass tubing comprises a support 3 having a pair of swing arms 1, 2 pivoted thereon on a common horizontal axis, with a pair of holders 20, one on each arm, rotatably mounted thereon about axes parallel to that of the common pivot axis to grip the tube 11 and support it horizontally transversely to and at least at the same height as the common pivot axis. As the arms 1, 2 are swung from the horizontal position shown, by means of the mechanism 16-13, followers 34 secured to the underfaces of the holders 20 engage a cam 36 carried at the lower end of a bracket 38 and rotate the holders 20 in the same directions as the movements of the swing arms. In the final position the faces 45 of the holders abut against the sides 47 of the bracket 38 so that by changing the bracket and cam assembly for one of different size U- tubes of various centre-to-centre leg spacings may be formed.
Patent GB-1077361-A (GB)
Title: Vulcanizable compositions containing olefinic copolymers
IPC: C08L23/16
Filed: 1965-03-05
Abstract: Compositions of ethylene-a -olefin copolymers containing vulcanizing ingredients are extended by the use of amorphous polypropylene. Ethylene/propylene, ethylene/butene - 1, and ethylene/propylene/non-conjugated diene polymers may be used vulcanized with conventional systems.  Reinforcing fillers such as carbon black and antioxidants such as phenyl-beta-naphthalamine may also be present.
Patent GB-133903-A (GB)
Title: Improvements in and connected with Boxes made of Cardboard, Strawboard, Fibre Board or the like.
Inventor: CANE JAMES HENRY
IPC: B65D5/44
Filed: 1919-04-14
Abstract: 133,903. Cane, J. H. April 14, 1919. Corner joints and strengthening pieces.-A cardboard or like box has dished ends 6 provided with flanged edges 7 secured to the box sides &c. by wire-stitching, rivets, &c. 8 passing also through both thicknesses of a suitably cut and scored reinforcing-strip 9, 10 of U-section. The reinforcing- strip can be applied to the box after filling, the rivets &c. 8 passing through the lid 4 and front flap 5. The strips can be made up folded ready for application to the box by a staple 15.
Patent GB-183895-A (GB)
Title: Improvements in cooling and lubricating the pistons of internal combustion engines
IPC: F01P1/04
Filed: 1921-03-30
Abstract: 183,895. Matthewman, W. March 30, 1921. Valve-gear.-Air for the carburettor is drawn from the crank case through the hollow piston-rod, the crosshead-guide chamber, and the timing case. The air carries oil-fog for lubricating purposes. Fig. 1 shows a twin-cylinder doubleacting engine the valverods 19<1>, 21<1> of which are operated from a cam 25 through tappets 22, 23 pivoted on a spindle 24.