US760216A

US760216A - Flue or duct.

Info

Publication number: US760216A
Application number: US18631503A
Authority: US
Inventors: Harry H Laws
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-12-23
Filing date: 1903-12-23
Publication date: 1904-05-17
Anticipated expiration: 1921-05-17

Description

PATENTED MAY 17, 1904.

No. 760,216. H. LAWS.

FLUE 0R DUCT. APPLICATION FILED DEC. 23. 1903.

2 SHEETS-SHBET 2.

N0 MODEL.

I N VE N TOR jidrr zz am A TTOHN E Y S WITNESSES.

Patented May 17, 1904.

PATENT OFFICE.

HARRY H. LAWS, OF NEW YORK, N. Y.

FLUE OR DUCT.

SPECIFICATION forming part of Letters Patent N0. 760,216, dated May 17, 1904.

Application filed December 23, 1903. Berial No. 186,315. (No model.)

To all whom, it may concern:

Be it known that I, HARRY H. LAws, a citi- Zen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Flue or Duct, of

which the following is a full, clear, and exact at the joint.

' A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of an upright duct or flue, the section being on the line 1 1 of Fig. 4:. Fig. 2 is a transverse section of the same on the line2 20f Fig. I. Fig. 3 is a perspective view of one of the sections; Fig. 4: is a sectional plan view of the improvement. Fig. 5 is a perspective view of one of the locking-keys for the sections, and Fig. 6 is a similar view of another locking-key.

The rectangular sections A and B of the fine or duct are approximately of the same size, as plainly indicated in the drawings, and the section A is provided on its four sides with outwardly extending return bend flanges A, while the section B is provided on three of its sides with outwardly-extending return-bend flanges B, and the fourth side, B is left plain, as plainly illustrated in Fig. 3. The adjacent sets of flanges A and B of the sections A and B are adapted to be fastened together by keys 7 (3, while the plain side B of the section B is fastened to the corresponding flange A of the other section, A, by a key D. (Illustrated in Fig. 6 and to the right in Fig. 2.)

Each of the keys C, of which three are'employed for the flue shown. is formed with inwardly-extending hooks C C connected with each other at .the outer members of the hooks by a doubled-up rib C, it being understood that when the sections A and B are placed in abutting position then the keys U are slipped sidewise in engagement with the corresponding flanges A and B to fasten the said flanges together, as plainly illustrated in Fig. 1 and to the left in Fig. 2. The fourth key, I), is provided at one side with an inwardly-extending hook D and at the opposite side with an out- Wardly-opening hook D having its top member connected by a flange D with one side of a doubled-up rib D, connected at its other side with the top member of the hook D, as will be readily understood by reference to Fig. 6. Now the plain side B readily enters the outwardly-opening hook D while the hook D engages the corresponding flange A, located opposite the plain side B In practice the key D is first connected by its hook I) with the corresponding flange A of the section A, and then the section B is placed in abutting position relative to the section A, so that the plain side B passes into the outwardly-opening hook D*. After this has been done the other keys, (J, are placed in position, as above described, it being understood that the hooks O C D D are approxi mately of a length corresponding to the sides of the sections on which they are used, while the doubled-up ribs 0 and D* are extended beyond the flanges to form corner-joints. as plainly indicated in Fig. 1. If desired, however, the projecting ends of the doubled-up ribs CD may be cut or mitered, so as to abut each other, instead of one passing into the other, as indicated in Fig. 4.

From the foregoing it will be seen that the flue or duct sections Aand B can be securely fastened together on all sides, and by the use of the keys 0 and D, as described, exceedingly strong joints are produced, reinforced by the doubled-up ribs C and D. It will also be seen that by the construction above set forth,

and illustrated in the drawings, the inner surfaces of the sides of the sections are rendered practically continuous, so as to present no obstructions whatever to the ready passage of the fluid passing through the duct or flue, thus reducing the resistance to the fluid passing through the flue or duct to a minimum.

By the arrangement above described it will be seen that the several sections of the flue or duct can be readily fastened together, and by having one side, B of a section plain and a key D arranged as described it is evident that the sections can be readily fastened together, especially when the flue or duct is located in a corner of a room and two sides thereof are not easily accessible, owing to the wall of the room.

Having thusdescribed my invention, I claim as new and desire to secure by Letters Patent 1. A metal flue made in sections, each of the sections having its sides provided with returnbend flanges and keys, each for uniting the flanges of adjacent sides of the sections with each other, each key having interlocking hooks extending in direction of each other for engaging the adjacent section-flanges and a doubled-up rearwardly-extending rib connecting the inner sides of the hooks of a key integrally and yieldingly with each other, as set forth.

2. A metal flue made in sections, one of the sections having each side provided with a return-bend flange and the other section having its sides, except one, provided with like return-bend flanges, keys for engaging the adjacent flanges of three sides of the sections, and a key engaging the remaining flange of one section and provided with a recess for receiving the plain end of the other section, as set forth.

3. A metal flue made in sections, one of the sections having each side provided with a return-bend flange and the other section having its sides, except one, provided with like return-bend flanges, keys for engaging the adjacent flanges of three sides of the sections, each key having hooks and a doubled-up rib connecting the hooks with each other, and a key engaging the remaining flange of one section and having a recess for receiving the plain end of the other section, as set forth.

4. A metal flue made in sections, one of the sections having each side provided with a return-bend flange and the other section having its sides, except one, provided with like return-bend flanges, keys for engaging the adjacent flanges of three sides of the sections, each key having hooks and a doubled-up rib connecting-the hooks with each other, and a key engaging the remaining flange of one section and having a recess for receiving the plain end of the other section, the key having an inwardly-opening hook at one side and an outwardly-opening hook at the other side and a doubled-up rib connecting the hooks with each other.

5. A key for locking the sections of a flue or duct with each other, consisting of hooks extending inwardly in direction of each other, and a doubled-up rib extending rearwardly substantially at a right angle to said hooks and integrally connecting the inner sides of said hooks with each other.

6. A key for locking the sections of a flue or duct with each other, consisting of an inwardly-extending hook at one side, an outwardly-opening hook at the other side, and a doubled-up rib and flange for connecting the said hooks with each other, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

, HARRY H. LAWS. Witnesses:

THEO. G. HOSTER, E. C. NIELSON.