baber/WOPTO huggingface dataset:
Patent GB-1045017-A (GB)
Title: Vacuum chuck
Inventor: DUNHAM RUSSELL HENRY
IPC: B25B11/00
Filed: 1964-02-10
Abstract: 1,045,017. Vacuum chucks. DUNHAM TOOL CO. Inc. Feb. 10, 1964, No. 5528/64. Heading B3D. A vacuum chuck for use with any one of a series of ported surface plates 19, Figs. 1 and 2, comprises a onepiece integral base member 11 adapted to be anchored to a flat surface 17 and having an upper portion which is of predetermined outline and defines an endless sealing groove 13 at its outermost surface within said outline and a pattern of vacuum canals 14, 14a and surface plate support islands 15 surrounded thereby, holding means 20 disposed outside the outline of the sealing groove for mounting a surface plate in face-to-face contact with the support islands, and pressure control means 33 associated with the vacuum canals. The holding means comprise bolts 20 which hold a surface plate against the upper surface of the base member and compress an 0-type sealing ring 21 in the groove 13 to seal a chamber 22 formed by the canals 14, 14a in the upper surface of the base member which are covered by the surface plate. The upper surface of the plate is formed with a plurality of grid segments 23, each comprising a channel 24 and transverse channels 25. Each channel 24 has a tapped port 26 which effects communication between the channel and the chamber 22 and can be closed by a plug in the form of a bolt 27 and an 0-type sealing ring. In operation, a workpiece can be placed on the surface plate and abutting vertically adjustable bars B1, B2 and those grid segments which are not covered by the workpiece are disconnected from the chamber 22 by insertion of the plugs 27 so that vacuum applied to the chamber through a pipe 30 and passage 28 only acts in the segments covered by the workpiece. A pressure release 33 valve is adjustable to determine the vacuum force, as indicated on a gauge 31, acting in the chamber and passages 24, 25. In another embodiment, additional canals are provided in the base member to produce a plurality of smaller support islands 115, Fig. 3, and the surface plate 119 is formed with a plurality of vacuum holding ports 126, Fig. 4, which, when not covered by a workpieee W, can be sealed from the vacuum chamber 122 by bolts 126a having 0-type sealing rings. The workpiece may be arranged to abut a stop bar 36 which is held on the surface plate by bolts 38 passing through slots 37 in the bar and engaging tapped holes in the ports. In a further embodiment having a base member 219, Fig. 6, having surface plate support islands as shown in Fig. 4, the surface plate has rectangular ports 223 each of which is filled with a porous stainless steel element 224. When an irregularly shaped workpiec W<SP>1</SP> is placed on the surface plate, the parts of the elements not covered by the workpiece are covered by a sealable, non-porous plastic material 40 which may be sprayed on to the surface.
Patent GB-1335937-A (GB)
Title: Method of making an oil-containing polyester and an oil- containing polyester when made by the method
IPC: C08G63/20
Filed: 1972-02-07
Abstract: 1335937 Oil-containing polyesters WHITTAKER CORP 7 Feb 1972 [22 March 1971] 5569/72 Heading C3B A method of making a polyester comprises heating (a) a fat and (b) a triol to give a transesterified first reaction product, and heating this with (c) a diol and (d) a mixture of an aliphatic polylbasic carboxylic acid having from 3 to 18 carbon atoms and an aromatic polybasic carboxylic acid to give the polyester, wherein the components (a), (b), (c) and (d) are present in the following weight percentages based on the total reaction mixture:- (a) 20-25; (b) plus (c) an amount sufficient to completely esterify (d), with the triol comprising 45-70 of (b) plus (c); and (d) 40-56 with the aromatic acid comprising 83-92 of (d). The amount of (b) plus (c) is preferably 30-40 and a fraction of the triol may be reacted in the first stage and the remainder added to the first reaction product with (c) and (d). The polyester may be cross-linked with up to 20% by weight based on the weight of polyester, of an aminoplast. In the Examples the following reactants are used, (a) soyabean, safflower, dehydrated castor and raw castor oils, (b) trimethylol ethane and propane, (c) neopentyl glycol, diethylene glycol and 1,4-cyclohexane dimethanol and (d) adipic and sebacic acids and phthalic anhydride and isophthalic acid, and the polyesters prepared may be cross-linked with butylated melamine optionally mixed with hexamethoxymethyl melamine.
Patent GB-1322474-A (GB)
Title: Toy tow truck
IPC: A63H17/12
Filed: 1972-02-07
Abstract: 1322474 Toy breakdown lorries TONKA CORP 7 Feb 1972 [15 March 1971] 5596/72 Heading A6S A toy breakdown lorry has behind the usual cab 15 a box 16 mounting a towing boom 24 pivoted at its front end 21, 26 and formed along its sides with longitudinal slots 27 through which are passed sideways extensions 32 of a control lever 30 pivoted at 22 in the sides of the box. Pivoting of the control lever 30 slides its extensions 32 along the slots 27 to raise and lower the boom 24. A generally U-shaped towing hook 37, to latch under the front bumper of a towed vehicle, pivots from the upper end of the boom. The control lever 30 of generally inverted U shape with a handle 31, is of resilient wire, etc; its lower limbs 33 can be squeezed together to disengage them from the pivot holes 22 in the box sides, and the pivot connection of the boom and box bottom, consisting of tabs and slots 26, 21, separated. The boom 24, &c can then be removed, and the toy used as a simple lorry.
Patent GB-1342054-A (GB)
Title: Apparatus for transferring a predetermined quantity of molten  metal from a crucible to a mould
IPC: B22D39/02
Filed: 1972-02-07
Abstract: 1342054 Casting machines CORAMEL SRL 7 Feb 1972 [22 May 1971] 5604/72 Heading B3F [Also in Division B8] Means for metering molten metal, e.g. aluminium for casting, comprises a container 43 arranged to be plunged into the metal in a crucible 47 for filling to the level of a discharge weir 43A and a plunger 39 for positioning in the container 43, the plunger 39 being positioned within the container 43 during filling, withdrawn to prevent spilling during transfer of the container 43 to a position above a mould, and advanced to controlled extent to displace a required volume of metal into the mould. The container 43 is supported by arms 41 from a casing 11 mounted on tubular rods 9, the rods 9 being pivotably supported on a head 5, angularly adjustable on a vertically movable column 3 by piston/cylinder means 48. An arm 27 supported from the casing 11 through a link 29 and piston/cylinder means 25 supports a further piston/cylinder arrangement 33-35A mounting the plunger 39. With the container 43 within the crucible 47 and the plunger 39 located within the container 43 at a position governed by a limit switch (49), Fig. 5 (not shown), for contacting the metal, the container 43 fills to the level of the weir 43A. During raising of the container by means of upward movement of the column 3, the piston/cylinder means 25 partially withdraws the plunger 39, and the means 48 is then actuated to position the container 43 for pouring into the mould. Actuation of the means 33-35A to advance the plunger 39 then effects pouring, the plunger stroke being limited by engagement of adjacent turns of a coil spring 23, compressed by a flange 37A of a connecting rod 37. A support sleeve 21 of the spring 23 is vertically adjustable to set the plunger stroke by means of a screwed connection to a gear 13, rotatable through a worm screw 15 on a shaft located within one of the rods 9 and driven by a motor 19. The plunger stroke determines the quantity poured.
Patent GB-764173-A (GB)
Title: Automatic device for connecting an a.c. generator in phase with a live network
IPC: H02J3/42
Filed: 1955-02-24
Abstract: 764,173. Synchronizing. CONDUCTEUR ELECTRIQUE BLINDE INCOMBUSTIBLE. Feb. 24,1955 [May 4, 1954], No. 5609/55. Class 38 (4). [Also in Group XXXVII] Contacts for effecting closure of a parallelling switch between two A.C. sources when the two are in synchronism are controlled by a member Z floatingly mounted between electromagnets A, B, C disposed as shown, the member carrying armatures a, b, c co-operating with the respective electromagnets, so that by relative variation of the strengths of the electromagnets the member Z may assume any of the four positions Z1-Z4. Electromagnet A is connected between corresponding phase lines, 1, 11 of the two sources and the electromagnets B, C are connected between crossed phase lines 2, 31 and 3, 21 respectively, of the sources. By this arrangement the attraction of the electromagnets is such that when the phase displacement between the two sources is increasing, member Z assumes position Z3, and when the phase displacement is decreasing the member takes up position Z4. At phase correspondence the member assumes position Z1 and closes contacts to complete a previously prepared circuit for operating the parallelling switch, which is subsequently maintained closed over a holding circuit independent of the contacts actuated by member Z. In positions Z3 and Z4, the member operates other contacts for effecting energization of the appropriate one of a pair of synchronizing lamps for indicating whether the frequency of the incoming source is high, or low.
Patent GB-390930-A (GB)
Title: A combined stop and retaining spring, for use on curtain railways
IPC: A47H15/02
Filed: 1932-02-25
Abstract: 390,930. Suspending curtains. HANSON, A. E., 27, Rafford Way, Bromley, Kent, and HANSON, D., Upton House, Haselor, Warwickshire. Feb. 25, 1932, No. 5642. [Class 52 (v).] A combined stop and retaining spring for curtain runners W is adjustably or fixedly mounted on the rail R. A metal stirrup A is attached to the rail by set-screws b and carries one or more leaf springs S adapted to be displaced by the end wheel or runner, which comes to rest between the spring and the stirrup. A pull on the curtain in the reverse direction releases the wheel from the spring. Fig. 4 shows a modification in which the spring itself forms the stop and is bolted to the rail. The spring may be attached to the rail by a clamp.
Patent GB-230984-A (GB)
Title: Improvements in induction passages for radial cylinder internal-combustion engines
IPC: F02B75/22
Filed: 1924-03-05
Abstract: 230,984. Forsyth, A. G. March 5, 1924. Vaporizers, external; heating charge. - Hot water or exhaust jackets 13, 14 are provided for the induction passage of a radial cylinder engine which comprises an inlet opening 5 for gas or carburetted air and passages 9, between a flared port 7 and a cone-shaped part 8 which lead to an annular distributor 6 having peripheral connections 12 to the cylinders. The passages 9, which correspond in number to the number of conneotions 12 and which may enter the distributor 6 either tangentially or radially, are formed by vanes which may be curved in cross or in longitudinal section or in both. The passages 9 are also arranged so that their total cross-section at any level is always equal to that of the inlet 5, which is the same as that of the annular distributor 6. One wall of the jacket 13 may be formed by the crank case 16.
Patent GB-438875-A (GB)
Title: Improvements in liquid flow control apparatus embodying a ball or float controlled valve
IPC: F16K31/18
Filed: 1934-02-21
Abstract: 438,875. Float operated valves. PATERSON ENGINEERING CO., Ltd., and SMALLEY, W., Windsor House, Kingsway, London. Feb. 21, 1934, No. 5700. [Class 135] A ball or float operated valve d which opens at a predetermined lower level g<2> and closes at a predetermined upper level g<1> in a main tank or receptacle a has its operating float c arranged in a supplementary vessel b the liquid level in which is controlled by one or more syphons f, h, so that this level is maintained until the lower level g<2> is reached in the main tank, whereupon the level in the supplementary vessel is lowered to open the valve. The bend of the syphon f, Fig. 1, is at the upper level g<1>, its inner limb being longer than its outer limb. The other syphon h has one limb opening into the vessel b just above the lower level g<2>, and its bend is located above the level g<1>. When the vessel b is empty, the valve d is fully open and the tank a fills up to the level g<1>. The syphon f then operates to fill the vessel b and so close the valve d, which remains closed until the level in the tank a falls to g<2>. The syphon h then operates to empty the vessel b and open the valve d. In the alternative arrangement, Fig. 3, an opening x replaces the syphon f, and the vessel b is maintained full until the level again falls to g<2> by a float-controlled valve k in a compartment l connected to the tank a by an inverted syphon m. The level in the limb m<1> of the syphon m falls with the level in the tank a until the bend m<2> is reached at which point air is syphoned into the compartment l and the valve k is opened. The syphon m allows air to be expelled from the compartment l whilst the tank is filling. The predetermined rate of flow is variable by means of a sluice or other valve e, Fig. 1. Where the supply pressure is not constant, a constant head may be obtained over the discharge orifice o<1>, Fig. 3, by means of the float-operated butterfly valve n controlling the flow into the tank o.
Patent GB-797619-A (GB)
Title: Long playing magnetic tape recorder
Inventor: THOMPSON LINCOLN
IPC: G11B5/58
Filed: 1956-02-24
Abstract: 797,619. Magnetic recorders and reproducing apparatus. SOUNDSCRIBER CORPORATION. Feb. 24, 1956, No. 5780/56. Class 40 (2). In a magnetic record apparatus employing transducer heads 37 mounted on a rotating turntable 15 whereby parallel arcuate tracks are traced on a wide tape T advanced in timed relation in respect to said turntable, resilient means are provided to press the tape into. contact with the heads. The said resilient means comprises a spring- loaded pressure pad 176 mounted on a carriage which is lifted and lowered by a toggle linkage 129, 131 coupled to a control shaft 125 operated by a hand lever 128. The turntable 15 is rotated by a motor 18 via worm gearing 19, and the tape is drawn by a capstan 102 and pinch roller 161 across the heads by the motor 18 via worm gearing 26, 27 and toothed wheels 94, 95, 98. A belt 104 on the shaft of the capstan 102 drives the take-up spool 13 through a slipping clutch 89. The heads 37 connected in parallel, one side to earth and the other to a slip ring 41. The width of the tape is such that when the obliquely placed gap of one transducer has entirely left one edge of the tape, the gap of the next transducer is in full engagement with the surface of the tape at the other edge. Normally the heads are arranged at an equal radial position on the turntable, but may be staggered to produce interlaced seams and thereby introduce an element of scrambling which can only be unscrambled by having a reproducing machine with heads identically placed as in the recording machine. Similarly, the heads could be mounted at different angular position to introduce a further element of scrambling. The embodiment described proposes a 7500 inch length of tape 2 inches wide and 0.002 inch thick giving a playing time of 31 hours, representing about 16 seconds per inch of tape. Location of any particular passage is obtained by a printed time scale on the back of the tape. A second embodiment is described using a double number of heads alternately connected to two separate slip wings whereby a double channel system is obtained.
Patent GB-678785-A (GB)
IPC: B29C48/635
Filed: 1951-03-09
Abstract: 678,785. Mixing appliances. PIRELLI SOC. PER AZIONI. March 9, 1951 [Aug. 9, 1950], No. 5795/51. Class 86 [Also in Group V] A plastic working machine of the kind described in Specification 636,713 is constructed with a heating or cooling jacket which is subdivided, longitudinally of the wall, into a plurality of sections which are separate from one another and may be independently supplied with heating or cooling fluid at temperatures to adapt the machine for other uses, particularly as a plastifier or as a preheater. As described, the jacket in the body 1 is formed in three sections, 17, 14, 16, adjacent to the inlet worm 10, the working device 11 and the outlet worm 12, respectively, each section having an independent supply of working fluid. If desired, the section 14 may be subdivided longitudinally of the machine into two or more sub-sections, each of which may have its own heating or cooling medium supply. Heating or cooling medium may be supplied also to the interior space 13 of the rotor.
Patent GB-333918-A (GB)
Title: High voltage terminal
IPC: H01B17/26
Filed: 1929-02-21
Abstract: 333,918. Smith, F. S. Feb. 21, 1929. Binding-posts and terminals.-A high tension conductor 18 is insulated from a partition, transformer casing &c. 19 through which it passes by one or a pair of hollow bodies 13, 14 that enclose a gas under a pressure of about fifteen atmospheres, and are screwed to a bush 12 between which and a tube 17 which enlarges the diameter of the conductor 18 a spark gap is formed to protect the circuit against excess voltage, the ratio of the internal diameter of the bush to the diameter of the high tension conductor 18 being less than 2.718 so that break down is not preceded by corona. The conductor 18 and tube 17 are secured in the end 9 of a terminal plug 15 by a fusible alloy that allows the tube to contact with the bush 12 on excessive rise of temperature. A cement that becomes brittle or fuses with excess temperature may also be used in the screw-threads between the insulators 13, 14 and the bush 12 and plugs 15, 16 in order to release the gas. The gaseous dielectric may consist of a mixture of helium and nitrogen, nitrogen, or carbon dioxide. The gas is forced in through a ball valve 22, Fig. 5, in the plug 16, the aperture being then closed by a screw plug 23, packing 24 and an outer plug 25. The solid dielectric is arranged where the potential gradient is least, the proportion of gaseous dielectric to solid dielectric in any path between the conductor 18 and the casing 19 increasing as the potential gradient increases. Specification 254,133, [Class 38 (ii), Electric currents, Converting &c.], is referred to.
Patent GB-977373-A (GB)
Title: Method and apparatus for manufacturing a pipe
IPC: B28B21/18
Filed: 1963-02-13
Abstract: 977,373. Casting pipes. PACIFIC CLAY PRODUCTS. Feb. 13, 1963 [June 14, 1962], No. 5818/63. Heading B5A. Pipes are formed from friable granular materials such as clay, plastics, cement &c., in a chamber formed between a rigid mandrel and a surrounding hollow cylinder, or an elastomeric material, such as rubber, by applying uniform pressure to the outer surface of the elastomeric cylinder to compact the material in the chamber to the required shape. In the embodiment described, powdered clay, containing 5-10% water, is fed from the hopper 10 via four feed lines (2 of which, 14a and 14b are shown) to a compression chamber 18 between a rigid mandrel 20 and an elastomeric cylinder 22, which is vibrated during the feeding operation. Valve 16 is then lowered by the piston and cylinder mechanism 15 and 17, to seal the compression chamber. The material in the chamber is then compressed to the required shape by introducing fluid under pressure, through inlet 34, into the chamber formed between the elastomeric cylinder and a hollow outer metal cylinder 30. During both the filling and compression operations the pipe is supported on an end member 42 which is vertically reciprocable by means of hydraulically operated piston 50, and which shapes the lower end of the pipe. After sufficient compression the pressure is released, via outlet 36, the locking pin 52 withdrawn and the formed pipe withdrawn from the mould on the end member 42. The pipe is then transferred by vacuum holders 56, 60 to a conveyer 66 for transport to a kiln, the ends being trimmed by saws 72, 74 (see Fig. 2, not shown).
Patent GB-1249778-A (GB)
Title: Method and apparatus for producing constant inflation air
IPC: B65B41/12
Filed: 1970-02-06
Abstract: 1,249,778. Inflating casings. UNION CARBIDE CORP. 6 Feb., 1970 [7 Feb., 1969], No. 5825/70. Heading A2B.  A method for continuously supplying a constant stream of inflating gas to a continuous length of flexible tubing as it is advanced over a mandrel comprises providing a floating mandrel having a bore therethrough and two longitudinally spaced apart inlet ports communicating with the bore, continuously advancing the tubing over the mandrel, alternately gripping and releasing the mandrel at the said two ports, and feeding a stream of inflating gas through each port into the mandrel bore and thence into the tubing during the time that the mandrel is gripped at the port, the alternate gripping and releasing being so arranged that the mandrel is always gripped at at least one port, and inflating gas is always fed to the mandrel at at least one port, escape of gas through the other port being prevented or restricted during at least a part of the time that the gas is being so fed. The inflated tubing may be stirred and compacted in successive portions upstream of the ports and severed, the severed portions being advanced along the mandrel and axially compressed against the gripping clamp in the gripping position, and is then advanced past the port when the clamp has moved out of its gripping position. An apparatus comprises a floating mandrel having a longitudinal bore therethrough leading to an outlet for gas passing into the tubing and a first and second inlet port longitudinally spaced apart and communicating with the bore, tubing feed members disposed about the mandrel for continuously advancing a continuous length of flexible porous tubing along the mandrel, valve means slidably positioned within the bore of the mandrel and arranged to reciprocate within the bore alternately to open and close said first and second ports such that when one port is open the other is closed, and a first and second clamp, each of the clamps having movable jaws for gripping and releasing the mandrel and a passage therein connectible to a source of inflating gas, the jaws of the first and second clamps covering the first and second ports respectively and the passage in each clamp communicating with the appropriate port when in the gripping position.
Patent GB-863188-A (GB)
Title: Improvements in or relating to apparatus for spraying textile articles
IPC: D06B5/24
Filed: 1959-02-20
Abstract: <FORM:0863188/IV(c)/1> An apparatus for spraying liquid on to textile articles positioned on forms within a chamber comprises a spray head consisting of tubes provided with nozzles substantially adapted to the shape of the forms which receive the articles to be treated. Preferably the articles are positioned on two parallel rows of forms associated with a plurality of spray heads.  Alternatively the forms may be arranged in a circle, the plurality of spray heads taking up radial positions.  As shown in a modification, tube member 3 has flange 4 adjoined by chamber 5 and is fitted with sleeve 1 having connexion 2 for liquid supply.  Horizontal tubes 6 have ends 7 bent downwardly, one end 7 having nozzles 8 and the other a slip-over tube 10.  Central tube 12 may extend between two forms and nozzles 8 fitted on either side may direct liquid on to the articles supported by those forms.  Shaft 17, eccentric 18 and driving wheel 19 may serve to rotate, oscillate or swing the spray assembly.