US1518038A - Arch-flue clamp - Google Patents

Description

- S. J. WILSON ARCH FLUE CLAMP Filed Nov. 12. 1923 WITNESSES IN VEN TOR ,Sdmuelf 71 157272 504% I I BY mZ /m Patented cc. 2, 1924.

ARCH-FLUE CLAMP.

Application filed November 12, 1923.

I '0 all whom it may concern:

Be it known that I, SAMUEL J. IVILSON, a citizen of the United States, and a resident of Charlestown, in the county of Suffolk and State of Massachusetts, have invented a new and Improved Arch-Flue Clamp, of which the following is a full, clear, and exact description.

This invention relates to clamps for arch flues and has for an object to provide an improved construction particularly adapted for arch fiues in locomotive engines and other similar places whereby the flues are locked in proper position temporarily untll they are properly expanded.

Another object in view is to provide a clamp for arch flues which may be adjusted to shift the fines to the exact position and hold the same in that position while being expanded.

In the accompanying drawing Figure 1 is a fragmentary longitudinal vertical section through a locomotive boiler showing an arrangement of arch flues with a clamp embodying the invention applied thereto.

Figure 2 is an enlarged fragmentary view of one end of the flue and associated parts shown in Figure 1.

Figure 3 is a fragmentary transverse sectional view through Figure 2, approximately on line 33.

In different forms of boilers and particularly locomotive boilers, a number of arch fines are provided immediately above the fire box, said flues being used as part of the circulating system for the water. In arranging these flues in position, they must be properly situated and then expanded at the ends in the usual manner to produce a tightconnection. As the space in the fire box is comparatively small, it is more or less diflicult to properly locate these flues and to properly expand the same. Heretofore, it has usually required from three to four days with three to four men to install a set of circulating arch flues and sometimes the flues were not correctly positioned and sufficient length was not allowed beyond the boiler plate.

In the accompanying drawing, a clamp has been shown which is adapted to lock the fines in correct position temporarily whereby the expanding tube may properly expand the fines and also may flare the outer ends as is now required by Government officials. As

Serial No. 674,406.

indicated particularly in Figures 2 and 3, the clamp consists of parts 1 and 2, each part hav ng a semi-circular section 3 fitting against the flue and a pair of legs 4; and 5 extending toward the boiler plate. It will be evident from Figure 2 that these legs are spaced from the flue 6 whereby the'flue may be properly expanded when the clamp is 1n position.

The parts 1 and 2 are rigidly clamped together by suitable clamping bolts 7 and 8, eachbolt having a head formed with an eye 9, saideyes being threaded for receiving the respectlve screw members 10 and 11. These screw members are adapted to press against the respective plates of the boiler as shown In Figure 1 in order to lock the flue 6 in proper position. It will be understood that the workmen will place one of the clamps 1n position and then insert the flue after which, the other clamp is placed approximately in the correct position. After this has been done, the various threaded members of screws 10 and 11 are operated for pressmg tightly against the boiler and thereby locking the flue in position. If the flue is projecting beyond one plate more than the other, the flue at one end is loosened and the screws 10 and 11 at the opposite end are operated for shifting longitudinally the flue until it projects a proper distance at each end beyond the respective boiler plates. The loosened clamp is then tightened and the screws 10 and 11 thereon are tightened which will lock the flue in its correct adjusted position. The expanding tool is then inserted and the flue is properly expanded, after which, the outer ends are flared as required by Government inspectors. This completes the insertion of the flue and the clamps may then be removed and used at another place.

What I claim is 1. An arch flue clamp, comprising means for clamping a flue near one end, and adjustable means carried by the clamping means adapted to engage the boiler plate for moving the clamping means and flue longitudinally of the flue.

2. An arch flue clamp, comprising a clamping body formed with a pair of clamping members, bolts for causing said clamping members to clamp a flue, and adjusting means carried by each of said bolts for adjusting the clamp in respect to the boiler plate and for moving the flue longitudinally to cause the same to project a proper distance through the boiler plate.

3. A clamp for holding circulating tlues in position, comprising a clamping body formed in two sections, each section having a pair of depending legs spaced further apart than the diameter of the fines, a pair of clamping bolts for clamping said sections to a flue, each of the clamping bolts being pro vided with a threaded eye, and a screw member positioned in said threaded eyes -lor adjusting the clamp when in use.

4. A clamp for temporarily holding the circular flues in correct position for being expanded, said clamp comprising a body formed with depending legs adapted to extend to a position near the end of the flue on which the clamp is positioned, said legs being spaced a suilicient distance away from the flue to permit expanding thereof, and means carried by said body extending parallel with said legs for adjusting the body and flue in one direction.

5. A clamp for a circulating flue for locomotive boilers, comprising clamping members adapted to be connected to said flue near each end for locking the same in position while being expanded, and means coacting with the locking means for adjusting the flue longitudinally to accurately position the flue for subsequent expanding.

SAMUEL J. WILSON.

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