US1585589A - Roll heater - Google Patents

Description

May 18,19% @585,589

J. C. LEAF? ROLL HEATER Filed mmh 9, 1925 4 shee'tS-sheet 1 INVENTOR wrrmzs@v amam/ ATTORNEY May 1s 1926.- 1,585,589

v J. C. LEAR ROLL HEATER 4 Sheets-Sheet I5 Filed March 9 1925 INVENTOR ATTORNEY May 1926 L5859589 A J.C.LEAR

ROLL HEATER- Filed March 9, 1925 4 Sheets-Sheet 4 Patented May 18, 1926.

UNITED STATES FAIENT @If-FICE.

ROLL HEATER.

Application led March 9, 1925.

This invention contemplates the provision of a sheet mill roll heater, by means of which the ro-lls of the mill can be quickly heated to a temperature priory to the use of 5 the mill, so that a high character or degree of work can be accomplished from the beginning as contra-distinguished from the present method, wherein the rolls are not properly heated unt-il after a considerable l length of time incident to the use of the rolls, so that the work done over a period of a day is not of uniform character.

One of the chief characteristics of the present invention resides in the provision of r a heater designed to completely enclose or cover the rolls of the mill, and including spaced groups of a series of burners arranged to direct the heat against the surface of the rolls, in a manner whereby the entire surface of each roll is expeditiously heated to a proper temperature to accom-` plish the best results.

Other objects and advantages of the invention will appear when the following detailed description is read in connection with the accompanying drawings, the invention residing in the construction, combination and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals of reference indicate similar parts in the several views, `and wherein:

Figure 1 is an end elevation showing one embodiment of the invention and the manner of using the same.

Figure 2 is a view taken at a to Figure 1.

Figure 3 is a sectional view taken on line 3-3 of Figure 1. Y

Figure t is an enlarged detail view of the arrangement of one group of burners with relation to the baiiie plate against which the heat is directed, the bathe being used to protect the rolls.

Figure 5 is asectional `view showing the arrangement of the air and fuel pi t es.

Figure 6 is a view similar to Flgure 1 of a modified construction.

Figure 7 is a View taken at a right angle to Figure 6.

Figure 8 is a fragmentary sectional view of the rolls showing the spacing element interposed therebetween.

Figure 9 is a perspective view of the bar right angle Serial No. 14,297.

pit usually located beneath the rlls of thc mill.

Figure 10 is a perspective view of one of the blocks used in connection with the bar, shown in Figure 9.

Figure 11 is a perspective view of the tightening key for the blocks, when used in the manner illustrated in Figure 9.

Figure 12 is a detail view partly in section of the supporting jack for the heater.

Figure 13 is a perspective View of the bar which provides the connection between the rolli ends of the respective sections of the heater shown in Figure 6. p

Figure 111 is a detail view showing thc relative position of the'battle plate with relation to the roll and one of the burners.

Referring to the drawingsin detail, and more particularly to Figures 1 tol 5 inclusive, I have shown the rolls of the mill at 10 and 11 respectively, and beneath these rolls is arranged the usual bar 12 which prevents the rolls from falling into a pit usually disposed beneath the rolls, in event that one of the rolls should break or become separated from the mill structure as will be readily understood. This bar 12 is usually straight, but when the form of the invention illustrated in Figure 1 is employed, the heater structure extends so far beneath the lowermost roll 11 that it is necessary to pro vide the bar v12 with an offset or depressed portion 13, as shown in Figure 1. The construction of this bar is clearly illustrated in Figure 9, wherein it will be noted that the odset or depressed portionv 13 is formed with a longitudinal slot 14C to accommodate the stems 15 of substantially T-shaped blocks 16 which are used to bring the level of the bar along the intermediate ortion thereof, substantially flush with tllije upper surface of said bar, when the heater is not being used. In other words, when the heater is associated with the rolls, which is done for an appreciable length of time before the mill is put into operation, it is necessary to have the upper surface of the bar 12 arranged in close proximity tothe lowermost roll 11, and it is in order to fill the space formed by the olfset or depressed portion 13 of this bar, that I use a block 16 as shown in Figure 10. The blocks are arranged in end to end relation, the slot 14 receiving the stems 15 of said block7 and the `blocks are held fixed relatively by means of a key 17 shown in Fig. 11. This key is also of substantially T-shaped formation and the stem 18 thereof is adaptedrto be .ttedY in the .slot 14 as shown in Figure S). The key is formed with an upstanding lug 19 having an opening 20, while each of the blocks having similar openings 21, the 'openings beingY provided to accommodate suitable Wire instruments employed to facilitate the removal of the'blocks and key from 'the bar 12 as the occasion requires.

The heater forming the gist of the present invention,includes a casing like cover which is `designed to completely cover vor enclose the rolls of the mill, and it is to be here understood that this casing can be constructed'from, any suitable material, vary in size and configuration without departing from the spirit ofthe invention. This casing is preferably made into sections 22 and 23 respectively, which sections may be held associated about the rolls inl any suitable manner. The' section 22 however is prel erably formed with an apertured exten tion,241 pivote'd as at 25 at the lower end of the section, Vand which extension is adapted to receive the hook 26Y carried by the adjacent endof the section 23. The upper ends ofthese sections are provided with spaced parallel lugs 27, one ofv which supports an adjusting screw 28 which bears against the other of said lugs so that the sections can be drawn tightly rabout the' rolls for use. The casing is preferably lined with fire clay 29 as shown in Figure 3, while also arranged within thecasing are pieces ofr asbestos BO which are arranged in right angular relation to the lire clay lining 29 and adapted to engage the rolls as :shown inFig. 3. Arranged exteriorly of the casing are angle iron bars 31', which of course'are. -used to aifordthe structure the desired strength and rigidity. Arranged on each section of the casing are hooks 32 by means of which the heaterv in its entirety can be lifted off the rolls after the sections have been separated at the lower ends thereof.V

Carried by each section of the casinggis spaced series of burners, the burners of each series being arrangedto extend longitudinally ofthek adjacent roll, this arrangement being clearly shown inY Figure 2. Y Any number of burners may be included in any one series, the burners of one seriesfbeing indicated generally at 83 in Figure 4, being supported by a pipe 34 which communicates with a pipe35,these pipes forv the respective series of burners beingsuitably coupled together, and arranged in communication with the air and fuel supply pipes 36 and 37 respectiif'ely. It will'now be noted that each of the'latter i'nentio'ned pipes are provided with valves 38, while each independent burner is provided with a similar valve 39 so that an-y one of the combination of burners in any or all of the various series of said burners, can be employed when desired. Each of these burners includes a perforated sleeve clearly shown in Figure 4, and thcsc sleeves are adapted to be received by open ings provided in the adjacent section of thcI casing' above described, thereby supporting the burners in the manner shown in Figure 1 each section of the casing'being provided with additional air inletopenings 40 suitably spaced apart as shown in Figure 2. Arranged Within each section of the casing is a` baille plate' or bar l11 terminally supported by suitable brackets' 12, there being` one of these bars for each series of burners` and arranged directly in front of said burners as clearly -shown in Figures and 111, the bars being so arranged to protect the rolls as will be readily understood. In ori der that the heat from these burners will pass about each roll. so that the entire surface of the latter will be heated to a proper temperature, l employ a spacing element iu dicated at 43, this element being in t-he nature of an asbestos strip adapted to be interposed betwcen the rolls, to vallow the heat to vpassl therebetween and circulate about both rolls as willbe readily appreciated.

The invention thus far described is used as follows: l

The heater as above stated lis intended to be used `for an appreciable length of time before the mill is put into operation, so that the rolls will be properly heated to accomplish thebest results from the very beginning. Consequently, while the rolls 10 and 11 are idle, the heater is arranged about the rolls, the sections thereof being properly connected together as shown in Figures V1. and 2. Then any combination of burners., or'all of said burners can be lighted to heat the rolls tothe proper temperature,4 after which the heater can beconveniently removed from'the rolls and the mill put into operation for the intended purpose. After the heater has been remove-d, the filling blocks 16 shown in Figure 10 are placed upon the offset or depressed vportion 13 of the bar 12. and held fixed relatively by the key 17 hereinabovedescribed, the association of these blocks and key with the bar 12 being clearly illustrated in Figure 9. During the use of the heater however', the rolls 10 and 11 are heldsui'tably vspaced apart by means of the asbestos spacing element 213 so that'the heat from the various burners 'is'not only direct ed against the opposite sides, top and bottom of said rolls but is also allowed to pass between the rolls and -circulate thereabout, so that the 'entire area of each roll is uniformly heated. As hereinabove stated, the -rolls are protected' from the dames by means of the baile plates 41 which are arranged between the rolls and each series oit burners as clearly illustrated in the drawings.l

In Figure 6, lvliave shown a moditied form of the invention, wherein the heater casing constituting the body oi the heater is made into sections 45 and 46 suitably connected together as at 47 at the upper ends thereof, the lower ends of these sections being spaced as clearly shown. In thisI t'orm of the invention, it is not necessary to make use of a bar 12 having an offset or depression portion 13 as above described, the heater being used in connection with the ordinary straight bar 48, inasmuch as the casing does not support a large battery or series of burners as shown in Figure 1. 1n other words, this form of the invention is used with the rolls 49 and 50 which are adapted to revolve while being heated, as distinguished from the arrangement shown in Figure 1, where the rolls 10 and 11 remain stationary. The vlower ends of the sections 45 and 46 oi the casing are connected by a plate 51 of substantially V-shaped formation in cross section, the plate being received by the adjacent ends of the respective sections oit the casing and having its intermediate portion reposing upon the bar 48 as illustrated in Figure 6. The design of this plate 51 is clearly shown in Figure 13. 1n addition to this construction, the heater is supported by adjustable jacks which are preferably of the construction shown in Figure 12, each jack including a base 52, and threaded rods and 54, the former being associated with the base, while the latter is associated with the adjacent section of the casing, the rods being connected by a sleeve 55. rlthis structure is similar to the ordinary turn buckle, so that the casing can be raised or lowered incident to the rotation of the sleeve 55 in one or the other directions. The respective sections oit the casing are adapted to be lined in the same manner hereinabove described in connection with the preferred embodiment of the invention. Now, it will be noted upon inspection of Figure 6 that there is only two series of burners 56 used in connection with each section ot' the casing, these burners being arranged as shown in Figure 6 to direct the heat against the rolls 49 and 50 at points adjacent their points of contact. The supply pipe 57 is suitably coupled to the fuel and air supply pipes 58 and .59, and all of these pipes are equipped with a suitable valve 60.

When using this form of the invention, the burners 56 and 57 are lighted and the rolls slowly rotated so that the entire area of each roll is subjected to the heat from the burners while they are being rotated. It is manifest that with either form of the invention, the rolls can be expeditiously heated prior to the use of the mill so that a high grade or character of work can be accomplished from the very outset.

While it is believed that from the forcgoing description, the nature and advantages of the invention will be readily apparent, 1 desire to have it understood that 1 do not limit myselil to what is herein shown and described, and that such changes may be resorted to when desired `as fall within the scope of what is claimed.

Having thus described the invention, l.' claim:

1. A heater for sheet mill rolls comprising a heat retaining casing made in sections and designed to completely enclose said rolls, means for holding said sections associated, burn-ers supported by said casing and arranged to direct their heat toward the rolls, balile plates arranged between the rolls and burners, and against which the heat is initially directed, and valves for said burners.

2. A heater `tor sheet mill rolls, comprising a heat retaining casing designed to completely cover said rolls, spaced series oit burners supported by the opposed sides ot the casing longitudinally of the rolls, and arranged to direct their heat toward the latter, fuel and air supply pipes supported by the casing and having valve control communication with said burners, a balile plate interposed between each series of burners and the adjacent roll, and a valve for each burner.

3. A heater for sheet mill rolls comprising a heat retaining casing made up in sections and designed to unitedly enclose said rolls when the latter are stationary, means for connecting the said sections of the casing together, spaced series of burners supported by each section and arranged to direct the heat toward and about said rolls, battle plates arranged between each series of burners and the adjacent roll, means for supporting said bailie plates within the casing, fuel and air supply pipes arranged upon the easing and having valve controlled communication with said burners, and a valve for each burner.

4. A heater for sheet mill rolls comprising a heat retaining casing designed to completely enclose said rolls, a series of burners supported on the vopposite sides oit the casing and arranged to direct the heat against sai-d rolls at points adjacent their points of contact, and to heat the entire area of said rolls, While the latter are rotated, battle plates against which the heat is initially directed, said casing having spaced draft openings, fuel supply pipes supported by the casing, and valves controlling the communication between the pipes and said burners.

5. A heater for sheet metal rolls comprising a heat retaining casing made up in sections, and designed to unitedly enclose said rolls, said seetlons'lmvng their lower end spaced apart, an angular plate supported by said sections nd arranged to close the lower end of said easing, means supporting said easing, a series of burners supported by each section and arranged to direct their 11e-at toward the rolls at points adjacent their points 4of Contact, whereby the entire area of each roll is heated during the rotation of the latter, fuel Supply pipes Supported by the easing und eonnnunicatng with said burners and valves controlling said Communie-ation.

In testimony whereof I atX my signature.

JESSE C. LEAR.

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