US1532621A

US1532621A - Enameling furnace

Info

Publication number: US1532621A
Application number: US659443A
Authority: US
Inventors: Alan D Dauch
Original assignee: GEORGE J HAGAN Co
Current assignee: GEORGE J HAGAN Co
Priority date: 1923-08-27
Filing date: 1923-08-27
Publication date: 1925-04-07
Anticipated expiration: 1942-04-07

Description

Apria 7, 1925.

.A. D. DAUCH ENAMELING FURNACE Filed Aug.- 27, 192s 5 Smeets-sheet' 1 4Apr7, 1925.

A. D. DAUCH ENAMELING FURNACE Filed Aug. 27, 1923 5 Sheets-Sheet 2 IIIHI HIIIIIHIIIIIIH` rml M;

LA N L ma EWCM i l c@ April 7, 1925. l 1,532,621

A. D. DAUCH ENAMELING FURNACE Filed Aug. 27, 1923 5 Sheets-Sheet 3 /N VENTO@ wif April 7, 1925.'

A. D. DAUCH ENAMELING FURNACE 15u/Elway? @im t QXL/A, /`/////////l M April 7, 1925.

A. D. DAUCH ENfXMELING FURNACE Filed Aug. 27, 1923 v j N l 1 CQC-GQBDDOCCCGDQIGU h-II/ .WJ t. 5.0 lo.. w ma U cdd DCCVCCCOQUQUDQ Us n lll n Y C CQCCCUDEDila-h E o o EL. cnc enncucccunnac u nu o H o o cca caaeacccmhncacne uen o H a n cncccaanqauanaonehv o o :c: uucanencnnanicl mnu .l n a cu ccnnwcclccauzulzu und QCO CUQO-Dncnadqcu ULI' www Patented Apr. 7, 1925.

UNITED STATES 1,532,521 PATENT orifice.

ALAN D. DAUCH, F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO GEORGE J. HAGAN COMPANY, 0F PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

ENAMELING' Farmacia Application led August 27, 1923. Serif? 55e. $9,443.

6 of the United States, have invented or dis'- covered certain new and useful Improvements in Enameling Furnaces, of which improvements the following is specification.I

The invention described herein relates to certain improvements in furnaces for burning enamel on the surfaces of metal articles and has for its object a construction of supporting racks permitting ot" their easy and quick renewal,'and a construction-ot' rack support permitting of a. 4rapid heating ot' the articles. It is a further object of the invention to provide for the simultaneous discharging and charging of the furnace.' The invention is hereinafterl more fully described and claimed.

In the accompanying drawings forming a part of this specilicaton Fig. 1 is a sectional elevation of a furnace embodying die improvements claimed herein; Fig. 2 is a 425 section plan view, the plane ot section being indicated by the line II-IL Fig. l; Fig. 3 is a transverse section in a plane indicated by the line Ill-IITl Fig. 4; Fig. 4 is a detail view showing 1n elevation a section of a longitudinal beam and a rack mounted thereon; Fig. 5 is a to pla'n View of the rack supporting beam; IFig. 6 is a similar view of a section of the rack; and Fig. 7 is a transverse section on a plane iudicated by the line VIL-VII, Fig. 4. Fig.

8 is -a sectional elevation of an enamelinr furnace. and mechanism for charging and moving articles into and from such furnace; and Fig. 9 is a top plan View on au enlarged scale of the charging mechanism.

In the practice ot the invention the furnace is preferably provided with charging and discharging openings at its ends and as it is preferred that heat should be ap- A plied directly to upper andunder surfaces of the articles, the furnace is made of suitableheight, and the articles supported as hereinafter described, approximately midway of the interior height of the fuinace.

10 Horizontal. members, or beams, 2, preferably formed of refractory material, are arranged across the furnace and supported at their ends by the sided-walls of the rurnace, and also by pref-elenco at. intermediate points by piers .:n-enners beams 2 are spaced distances apart and from the 'ends of the furnace dependent on the lengths of the sections 4 of the rack supports preferably formed of a refractory alloy. These sections are anchored at 'one end of the transverse beams by pins 5 projecting into the latter, and'in order to maintain the sections in alinement, adjacent endsare interlocked in anysuitable manner. In the construction shown, one cud of each section is provided with `aws G for the reception of the plain end o the next adjacent section.- As it isdesirable to employ a large number of these longitudinally arranged sections and at the same time to provide spaces between adjacent lines ofvsections to permit of the upward passage of heat between them,'the sections are made eompartively thin and provide lateral projections at their lower edges 'and adjacent to the A:nds of the sections, adapted to bear on the upper surfaces of the beams. At one end these lateral projections are formed by thejaws 6 and at the opposite end by ears 7. By reference to Figs. l, 2 and 5, it will be seen that the sections are. made by such lengths and so supported that adjacent ends will not abut, thus permitting of expansion of the sections.

As shown in Figs. l and l, the racks are formed of bars 9 provided on one side with. a plurality of pointed pins 10. The bars which are arranged on the supporting sections are. preferably a little shorter than. the sections. Any snit-able means may be ernployed for holding the bars on the sections in Such manner as to permit of their easy replacement. bv othrbars. A desirableA construe-tion to this end consists in forming flanges 4 along the upper edges of the sections4 and cutting notches in the flanges for the. reception of lugs 1l so formed onthe bars 9 that a por-tion of the lugs will project down on one side of the sect ions, while the others will project down the other side of 100 ranged respectively at opposite ends of the 105 furnace as shown in Fig.'8. Each of said mechanisms consists of a fork having a pluralityV ot prongs or fingers i2 spacedv such. distances apart that when a, fork is These transverse pushed into the furnace the fingers will be in line with spaces between the rowsof pins of the rack inthe furnace. The fingers are made of lengths substantially equal to thelength of the furnace and are so supported that they may be moved into and out of the` furnace and also raised and lowered. In the construction shown herein for imparting the desired movements to the fork, the prongs 12 are secured at their inner ends to a frame consisting of vertical bars 13 and brackets .11i secured to the bars which have their respective ends pivotally connected to a pair of

levers

15 and 16 fulcrumed at17 on the posts or standards 18 secured to the frame of the machine. The 'forks are supportedj in horizontal normal position by abutments 19 secured to the vertical bars 13 .4f The upper ends of the vertical bars 125 axjeiadjustably connected to the upper' levers by "turn buckles 20. By adjusting the turnbl'okles the normal position of the fork can be varie-d. A comiterbalancing weight. 2l is secured to the rear ends of the levers.

The members of the pairs of levers are connected by cross bars 22and1these cross bars are connected to the innerend -of an operating lever 23, which is preferably provided with a. locking device adapted to engage teeth on a. sector 24, whereby the fork may be held in roper positionv While being 'moved into andJ out of the furnace. The charging mechanism is .mounted on wheels 25 movable along rails 26 in alinement with the furnace. The back and forth movement of vthe mechanism is preferably effected lby of the charging mec anisms which is then then `withdrawn and another charge of ma terial placed thereon. As soon as thearticles have been properly- 'heated the fork at the other end is run into the furnace, the pronfrs passing below the articles' resting on the pins. The fork is then raised to lift the articles away from the pins and the fork withdrawn. .It will be seen that the opera-- tion'above described is similar to the operation of what is tei'incd'a continuous heating furnace, the articles being moved at all times in the same direction.

I claim herein as my invention:

l. An enameling furnace h. ving in combination therewith a plurality of beams or members arranged in spaced relation within the furnace and rackslconsisting of a plusections and racks provided with pins forA supporting articles to be treated detachably supported by the rack supports.

3. An enamelingI furnace having in com'- bination therewith a" plurality of spaced beams or members arranged intermediate the ff* helght of the heating chamber, racks pro-"- vided with pins for supporting articles t'o be treat-ed arranged in 'spaced relation on said beams and means whereby vheat is applied to the upper and undersides of articles supported by the racks.

4;. An enameling furnace' having in conibination therewith a'phu'ality of spaced vbeams or members-arranged transversely of and in a plane intermediate the height of the chamber of the furnace, rack supports arranged-longitudinally of the chamber and consisting of la plurality of longitudinal sections and racks provided with pins for supporting the articles to'be treated detachably :secured to the rack supports andlmeans for applying heat to the upper and' underside of articles supported by the racks.

5. An enameling furnace having in combination therewith a. plurality of -spaccd beams or members arranged transversely of and in a plane intermediate the height-of .f the chamber on -the furnace, rack supports arranged longitudinally of the chamber and consisting of'a pluralitycf 'longitudinal sections, and racks consisting of a plurality of longitudinal sections and detachably secured to the rack supports.

6. An en'amelng furnace having in combination therewith rack supports 4extending longitudinally of the furnace and racks pro-i vided with pins consisting of a. plurality of sections'and d'etnchablysecured tothe rack supports.

" 7. An enameling furnace havinglin com- ,bination therewith beams or members arranged transversely of the `furnace and'in spaced relation one to theothcig, rack-supports consisting of a plurality ofsections extending longitudinallyof thefffurnace and supported by said bea1ns,each section being provided with means-forf-detachably anchoring suchsection to' a transverse beampthc 'ends of such section'sbeing adapted to interlock so as tf'i'mainain the sections in alinement, a. rack provided with pins detachably secured to such supports.

8. An enameling furnace having in combination therewith beams or members arranged ltransversely bf the furnace and in IIT-ii beams or members the upper and under si spaced relation one to the other, rack-supports consisting of a plurality of Sections extending longitudinally of the furnace and sul'iportcd by said beams, each section being 5 provided with means for detachably anchoring sneh section to a transverse beam, the ends of such sections being adapted to interlock se as to maintain the sections in alinenient, and racks'consisting of a plurality of 1u sections, each provided with pinsand with means for detachably engaging the rack support-ing sections.

9. An enamelinfr furnace having in combination therewith a plurality of spaced arranged intermediate the height of the chamber, members carrying a plurality of pins supported. bythe beams arranged in spaced relation on the beams and means whereby heat is applied to es of articlescsupported by the pins. 10. An enameling furnacehaviug in combination therewith a plurality of spaced beams or members arranged transversely of and in a plane intermediate the height of the chamber .in the furnace, supporting members consisting of a pluralit of secranged transversely of the furnace and in-A spaced relatin one to the other, supporting members' consisting of a plurality of sections extending longitudinally of the furnace and supported bv said beams, each sec- 'tion being provided with means for detachably anchoring sucla section to a transverse beam, the ends of the sections being provided with interlocking elements adapted to per- `mit of the independent expansion and contraction of the sections'.

In testimony whereof, I have hereunto set my hand.

` ALAN D. DAUCH.