US2825217A - Mangling machines - Google Patents

Description

March 4, 1958 H. L. BYRD MANGLING MACHINES s Sheets-Shae}. 1

Filed March 1, 1955 H. I... BYRD MANGLING MACHINES March 4; 1958 3 Sheets-Sheet 2 Filed March 1, 1955 March 4., 1958. H. 1.. BYRD 2,825,217

MANGLING MACHINES Filed March 1, 1955 v 5 Sheets-Sheet 5 o \\ioii o 1/? i F 'i i 1 n 2,825,211 Ice Patehted'Marf4, 1.95:8

2,825,217 MANGLING MACHINES Hugh L. Byrd, Blackburn, England, assignor to Sir James Farrner Norton -& Company Limited, Salford, England, a British company Application March 1, 1955, SerialNo. 491,363

comin or. 68256) This invention relates to mangling, rolling and like machines having two or more bowls, or rollers, and has for its object to provide improved means for applying pressure to the bowls which will give a more uniform distribution of pressure along the bowls.

Accordi g to the invention, pressureis applied to at least one bowl or roller at each end by means acting on one end of a lever which is fulcrumed on the main bearing of the. bowl or roller and has its other pivotally attached to asubsidiary bearing located near the end of the bowl or rolleroutside the main hearing.

The pressure so applied tends to lift the extremities of the bowl from the adjacent bowl and force its centre part towards the adjacent bowl so that the distribution of pressure along the bowl is more unif rm than when just the main bearings are loaded, so much so that the deflection of the rollers can be very considerably reduced. As a result, a sufficiently uniform pressure can be obtained with thinner bowls than hitherto, which is advantageous because thinner bowls are more effective in squeezing moisture out of cloth. A uniform distribution of pressure along the bowl is very necessary in the dyeing of cloth for enabling level dyeing to be obtained.

If desired, similar arrangements may be provided to apply pressure at each end of both the top and bottom bowls of a three-bowl machine, in which case the middle bowl may be fixed. Alternatively, the levers acting on either the top or the bottom bowl may be pivotally attached at their inner ends to fixed points instead of to pressureapplying means, pressure being applied only to the other bowl, in which case the same result is obtained, with pressure applied through the middle bowl which is movable. The pressure applying means may be hydraulic or pneumatic cylinders with pistons having piston rods connected to the ends of the levers. Alternatively, the pressure may be applied by mechanical means, for example by means loaded by screw devices or by weights. The bowl bearings are mounted in the normal manner in vertical, horizontal or inclined guides, thus locating the bowls or rollers and preventing lateral movement.

The invention could also be applied to cloth calendering machines or rolling machines for sheet and strip metal. In the case of machines for dealing with cloth at least one of the bowls has a surface of resilient material such as rubber.

Referring to the accompanying drawings,

Figure 1 is a front elevational view of a three-bowl cloth mangling machine embodying the present invention.

Figure 2 is a front elevational view of a modified form of a three-bowl cloth mangling machine, and

Figure 3 is a part front elevational view of the machine shown in Figure 2.

The machine shown in Figure 1 has a top bowl 1, a rubber middle bowl 2, and a bottom bowl 3. The bowls are geared together by gears 4, 5 and 6 at each end, and the bottom bowl 3 is driven by a chain wheel 7. The bcwls run in bearings 8. 9, 10 at each end. which are mounted between vertical guides 11. Beneath each ..ples on the ends ofthe bottom bowl 3 as indicated by end of the bottom bowl 3 is a lever 12, having one end attached to a bracket 13 fixed to the machine frame, and its other end attached to a bracket 14 on a bearing 15 'onthe'end ofthe, bowl 3 beyond the main bearing 10, the lever-being: fulcrum'ed at 16 on the bearing 10.

Above each end ofthev top bowl 1 there is a lever 17, having its outerend attached to. a bracket 18'on .a bearing-19 on the outer. end of the bowl 1, its fulcrum-2t). on

'the main bearing 18 and-its inner. end attached to. the mov- O ing part21 of a hydraulic jack 22 mounted on'themachine frame. Hydraulic fluid can be applied to or exhausted fromeit-her end of the jacks '22, by wayof a h'and operated valve 23.

,If fluid isadmitted-at the tops ofthejacks 22 so as to force theinner ends of the levers 17 downwards, the mainb'earing :8 eispressed. downwards and the outer end of the bowlfl is pulled upwards, as indicated by arrows.

.Thishas 'the-resultothat the bowl 1 tends to become .curved,sothatthe-pressure between it and the middle 20.

.creased, thus compensating. forany tendency of the bowl bowl 2 at the centre of 'the machine tends to become into curve. in. the opposite :direction while cloth ispassing between the"bowls-1..and 2. At the same time the main bearingsS, 19 .andli) are all depressed, so that the levers v12, being anchored .to the brackets 13, exert couarrows, tending to bend said bowl so as to increase the pressure-between. it vandthe bowl ,2 ,at the centre of the machine.

It will be understood that the. bowls,1,,2 and 3 are made of metal or of metal covered with resilient material such as rubber, and the same are long compared with their diameters. The small deflection at the mid-point of a bowl will require only a very slight deflection at the ends of the bowl where the gears 4, 5 and 6 are located and only a very slight angular deflection at the bearings 8 and 10, insuflicient to interfere with the meshing of the gears or to cause the bowls to bind in their bearings. The bearings 15 and 19 move with the ends of the bowls and remain coaxial therewith.

Figure 2 shows a modification of the machine of Figure 1, in which the levers 12, instead of being attached to fixed brackets 13, are acted upon at their inner ends by hydraulic jacks 24 which are operated simultaneously with the jacks 22 acting upon the upper levers 17. By this means, pressure is applied directly to both the top and bottom bowls.

Figure 3 shows a further modification, in which pressure is applied to the levers l2 and 17 by mechanical means instead of hydraulic jacks. The levers 12 and 17 have their ends pivotally secured to stirrups 25 acted upon by screws 26 threaded into nuts 27 attached to the machine frame 28 and provided with hand wheels.

What I claim is:

1. A mangling, rolling or like machine, having at least two bowls or rollers located one above another, asingle main bearing for each bowl in proximity to each end of each bowl, subsidiary bearings for at least one bowl located near each end of said bowl outside the main bearing thereof, levers pivotally attached to said subsidiary bearings and fulcrumed on the adjacent main bearings of said bowl, and means acting on the ends of said levers remote from the subsidiary bearings for applying pressure thereto to force the ends of the bowls apart with the subsidiary bearings moving with the ends of the bow and remaining coaxial therewith.

2. A mangling, rolling or like machine, having at least two bowls or rollers located one above another, main bearings for each bowl, subsidiary bearings for each of the top and bottom bowls located near the ends of said bowls, outside the main bearings thereof, levers pivotally attached to said subsidiary bearings and fulcrumed on the adiacent main bearings of each bowl, and means acting on the ends of said levers remote from the subsidiary bearof the top andlbottom bowls located nearthe: ends of 6 said bowls outside the main bearings thereof, levers pivotally attached to said subsidiary bearings and fulcrumed on the adjacent main bearings of each :bowl, and means acting on ,the ends of the levers associated with one of said top and bottom bowls remote from the subsidiary bearings for applying pressure thereto. to force the ends of said top and bottom rollers apart,1the ends remote from the subsidiary bearings of the levers associated with the other of said top and bottom rollers being pivotally attached to fixed pointsinside'themain bearings.

4. A mangling, rolling or like machine, having a top bowl or roller, a bottom bowl or roller. main bearings'for the bowls, guides in which the main bearings are movably mounted, subsidiary bearings located near the ends of the top and bottom bowls outside the main bearings, levers pivotally attached to the subsidiary bearings of the top bowl, and fulcrumed on the main bearings thereof, pressure applying means acting on the inner ends of said levers, and levers pivotally attached to the subsidiary bearings of the bottom bowl and fulcrumed on the main bearings thereof and attached at their inner ends to fixed points inside the main bearings.

5. A mangling, rolling or like machine. having at least two bowls or rollers one above another, a single main bearing for each bowl in proximity to each end of each bowl, subsidiary bearings for at least one bowl located near each end of said bowl outside the main bearing thereof, levers pivotally attached to said subsidiary bearings and fulcrumed on the adjacent main bearings of said bowl, and means actuated by fluid pressure acting on the ends of said levers remote from the subsidiary bearings for applying pressure thereto to force the ends of the bowls apart with the subsidiary'bearings moving with the ends of the bowl and remaining coaxial therewith.

6. A mangling, rolling or like machine comprising a pair of spaced apart vertical guides, at least two bowls positioned one above the other extending substantially perpendicularly relative to the vertical guides, a main bearing mounted on each vertical guide in which eachbowl is journalled, the bowls being unobstructively bridging between said vertical guides and with the endsof each bowl projecting beyond the main bearing, a subsidiary hearing for each end of each bowl located exteriorly of each main bearing, a lever pivotally connected to each subsidiary bearing and fulcrumed on the adjacent main bearing, and means operatively connected to the end of eachlever remote from the pivotal connection to the subsidiary bearing serving to apply pressure theretoto force'the ends of the bowls apart, with the subsidiary bearings moving with the ends of the :bowl and remaining coaxial therewith.

References Cited in the file of this patent UNITED STATES PATENTS 134,310v Pratt Dec. 24, 1872 536,145 Howard Mar. 19. 1895 2,185,481 Ungerer Jan. 2, 1940 2,204,413 Hubbert June 11,1940

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