US1792446A

US1792446A - Furnace arch and blocks

Info

Publication number: US1792446A
Application number: US239303A
Authority: US
Inventors: Nick T Puckett
Original assignee: M A HOFFT Co
Current assignee: M A HOFFT Co
Priority date: 1927-12-12
Filing date: 1927-12-12
Publication date: 1931-02-10
Anticipated expiration: 1948-02-10

Description

Feb. 10, 1931. N. T. PUCKETT 1,792,445

FURNACE ARCH AND BLOCKS Filed Dec. 12. 1927 [Vic/u TPac/zel t,

Patented Feb. 10, 1931 UNITED STATES PATENT OFFICE NICK T. PUOKE'IT, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE M. A. HOFFTOOIVL PANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA rumracn Anon AND BLOCKS My invention relates to furnace arches and particularly to that type of furnace arch wherein there is provided a plurality of associated refractory blocks which form the lining for the arch.

It is one of the objects of my invention to produce a mounting for the individual blocks of such character that the blocks may be readily inserted into a furnace arch in such manner that if one of the blocks becomes defective it may be individually and readily removed and a substitute block placed in the arch Without disturbing the other blocks and to provide such a mounting of a character that the initial labor cost in in- .stalling the blocks, and in substituting one block for a broken one, may be reduced to a minimum.

For the purpose of disclosing my invention I have illustrated one embodiment of the same in the accompanying drawings in Fig. 1 is a partial longitudinal section of a furnace provided with my improvement;

Fig. 2 is a vertical section in the same plane as Fig. 1 on a larger scale of the block hanger and adjacent portions;

Fig. 3 is an end elevation of a portion of the suspension member, and

Fig. 4: is a perspective view of one of the blocks.

In constructing the furnace arch I mount therein a series of I beams 1 arranged preferably transversely of the furnace setting and equally spaced apart to coincide with the width of the refractory blocks to be used.

Each of the blocks 2 is provided with a suspension member comprising a suspension rod 3 having at its lower enda head 4 adapted to enter a T slot 5 formed in the top of the block 2 and extending only part way into the block, preferably only far enough to permit the axis of the suspension member to be brought into alignment with the center of gravity of the block. The upper end of the rod 3 is provided with a U shaped extension, each of the arms 6 thereof having at its upper end an opening to receive a pivot pin 7 of a locking dog 8, the arms of which are adapted to straddle the arm 6. The rear ends of these dogs are provided with weighted projections 9 extending at right angles to the dogs to maintain the dogs, normally substantially in horizontalposition and to lock the same against upward movement from 5 this position by engagement with the

arms

6, 6. The upper ends of the arms 6 are provided with stop projections 10 which, engaging the weighted portions 9 when the dogs are tilted downwardly from the horizontal, prevent the overthrow of the dogs.

In forming a refractory arch embodying my improvements each block is provided with a suspension member which, after attachment to the block may, with the block, be projected upwardly. The dogs swing downwardly by their engagement with the bottom flange of the I beam and then drop into the horizontal position, after moving past the flange, due to the weight of the portion 9. WVhen the unit is slightly lowered the dogs come in contact with the flange to support their parts in position.

In event any one of the blocks becomes damaged or broken the support may be very readily removed from position without disturbing the remaining blocks by breaking away entirely the damaged or broken blocks and then inserting the fingers up to maintain the dogs 8 in their depressed position as the suspension member is projected slightly upwardly. With the dogs in their depressed position the member may be lowered from the I beam.

I claim as my invention:

1. A block suspension member for furnace arches comprising a stem having a head at its lower end and a pair of bifurcated arms at its upper end, dogs pivotally mounted on said arms and normally extending toward one another at an angle to said arms and means on said dogs adapted to engage the arms to prevent the yielding of said dogs in but one direction.

2. A support for furnace arch blocks com prising a stem having at its lower end a head and at its upper end a pair of bifurcated arms, supporting dogs pivotally mounted on said arms and normally extending toward one another at right angles to said arms and 100 Weighted extension members on said dogs tending to move the same to their normal position and adapted to engage the arms to prevent the dogs from pivoting except in one direction.

3. A support for furnace arch block comprising a stem having at its lower end a head, and at its upper end a pair of bifurcated arms, supporting dogs pivotally mounted on said arms, each comprising a :bell crank, one arm of which normally extends toward the opposite dog and the other arm of which normally engages its bifurcated arm to prevent the dog from yielding in but one direction.

In Witness whereof, I, NICK T. P-UGKETT, have hereunto set my hand at Indianapolis, Indiana, this 9th day of December, A. D one thousand nine hundred and twenty-seven.

NICK T. PUCKETT.