US1108171A - Flue-cutter. - Google Patents

Description

B. HENRIKSON. FLUE CUTTER. APPLICATION FILED JAIms, 1914.

Patented Aug. 25

THE I oRR/s PETERS CIL PHOTO-LITHD., WASHINGFON. D. l;

BERNHARDT HENRIKSON, OF CHICAGO, ILLINOIS.

FLUE-CUTTER.

Specication of Letters Patent.

Patented Aug. 25, 1914.

Application filed January 28, 1914. Serial No. 815,018.

To all whom it may concern:

Be it known that I, BERNHARDT I-IEN- RrnsoN, a citizen of the United States, residing at Chicago, Cook county, Illinois, have invented certain new and useful Improvements in Flue-Cutters, of which the following is a specification. Y

My invention relates to what are known as flue cutters, as exemplified by my prior Patent No. 616,907 issued to me on April 3, 1900, and the object of my invention is to improve this type and general construction of iue cutter and to render the same more efficient and to increase the capacity thereof by providing means whereby it may be used for dierent sized flues.

Another object of the invention provides a signal device such as a whistle operated by the same motive fluid that operates the cutter, to indicate the completion of the work of cutting.

In the drawing, Figure 1 is a central longitudinal section of the fiue cutter proper, the motor not being shown; Fig. 2 an elevation of the front end of the machine; Fig. 3 a section on the line 3-3 of Fig. 1; Fig. t a section on the line 1 -4: of Fig. 1; Fig. 5 a perspective of an adjustable ring; Fig. 6 an end view of the stem; Fig. 7 a perspective of the eccentric bearing block; Fig. 8 a perspective of one of the thrust rollers; Fig. 9 an elevation of the stop or means for operating the whistle; Fig. 10 a section of such whistle; and Fig. 11 a perspective of a fastening block.

Referring to the present embodiment of my invention, it will be understood that any suitable motor (not shown) operated by compressed air or other motive fluid may be employed and that the same motive fluid used to operate the motor and to rotate the fiue cutter is employed to move the cutting tool outwardly to its work. The mechanism herein shown therefore comprises merely the tool spindle and associated parts such as the cutter itself, fluid pressure mechanism for moving the same outwardly to its work, the thrust rollers forming one feature of my invention, the removable collars and bearings forming another feature thereof, and the whistle forming still another feature.

The tool spindle comprises a stem 1 on whose inner end is mounted a cylinder 2 within which travels a piston 3. This piston is normally held to its inward position shown in Fig. 1 by means of a spring 4 contained within the hollow piston stem 3*- and interposed between the piston head or piston proper and the annular shoulder 1a of the stem. The stem is provided at its inner end with a port 5 adapted to conduct the compressed air to the cylinder 2 in front of the piston and to thereby force the latter outwardly against the tension of the spring 4.

In the inward end of the stem there is mounted to reciprocate in a direction transverse of the axis of the stem a cutter support or block 6 in whose outer end is rotatably mounted the cutter 7 This block is moved outwardly by the movements of the piston 3 through the medium of the cam lever 8 pivoted at 9 with its forward end bearing` underneath the block 6 and with-its rearward end which is fashioned as a cam, in contact with and operated by a roller 10 mounted in the piston stem 3a. This cam lever is held in the normal position shown in Fig. 1 by the spring 11. It will be understood that when the piston 3 is moved outwardly the cam lever will be rocked in a clockwise direction and the cutter block and its cutter move outwardly to the work, these movements taking place during the rotary movements of the entire structure by means of the motor (not shown) which is attachable to the inner end of thestem 1.

The stem 1 terminates at its outer end in a plate 12 whose inner face forms one of the bearing or guiding surfaces for the block 6. To this plate is secured in a suitable manner, as by means of the screws 13 a removable plate 111 which is provided on the side of the machine opposite the cutter with a pair of recesses 15, each recess being provided through the bottom thereof with two holes 16 arranged on either side of the central axis of the recess and inwardly thereof, that is toward the central axis of the stem 1, as clearly indicated in Fig. 2. In each one of these recesses is located an eccentric bearing block 17 shown in perspective in Fig. 6. Each block is in the form of a short cylinder provided on its outer end with an eccentric projecting pin 18 adapted to enter one or the other of the holes 16, and provided with an eccentric bearing opening 19 entering its inner end.

The stem 1 has intermediate its length a depending portion 20 which is provided with circular recesses 21 similar to the recesses l5 and in alinement therewith, such recesses being also provided with holes 22 similar to the holes 16 and also containing eccentric bloclrs 23 similar to the blocks 17. The pairs of `blocks 15 and 23 are bearing blocks for a pair of thrust rollers 24, each having at its ends gudgeons 25 adapted to enter the eccentric bearing openings in the.

bearing blocks.

rollers beyond the blocks 17 and 23.

location or' the pins 18 in one of the holeslG or 2.2 and the other position by the location of the pin in the other one of these pairs of i holes. Consequently by merely removing the outei plate 14 and thereby withdrawing the rolls the bearing blocks may be adjusted to the other position thereby causing the thrust rollers to project more or less, as the l case may be.

The tool stock or stem is provided with an outer swiveled collar 2G having a hub portion 26:L between which and the intermediate portion of the stem 1 is interposed an inside rotatable collar 27fastened to the stem 1 in suitable manner, preferably by the two set screws 27 and 27h, the former of which abuts the stem and the latter of which slightly enters the same. rlhe inner collar has a circumferential groove 27C and the outer collar has a pair of opposite slots 26b adapted to register with the groove 27, these slots and groove being of a size to receive the pair of radius plates 28 which travel in such groove in the rotations of the collar 27. ln order to hold these plates in loclring position l employ an outer locking ring or sleeve 29 having a pair of' opposite slots 2WL corresponding to the slots 26h. When the plates 28 are to be inserted in place the slots 26b and 29u are in register and after such plates are positioned the locking sleeve is turned to the position shown in Fig. L1 so that such plates cannot escape.

To provide for cutting off different lengths oi flues the outside collar which abuts the end of the flue shown at A is adjustable, together with the inner collar longitudinally of the stem. ln adjusting, the set screws are loosened, the inside collar then adjusted and the screws then tightened, the screw 27l0 entering the proper one of a plurality of holes 27d in the stem.

The alarm whistle, which is illustrated in F ig. 10 is mounted upon the piston head and projects therethrough so as to communicate with the fluid pressure side of such piston. As shown, the whistle comprises a Whistle shell 80 having a whistle opening 30a and a valve 31 governing the communication between the pressure side of the piston and the interior of the shell. This valve has a Each block has two posi- 1 tions, one position being represented by the` stem 32passing through a stationary block post 35 attached to the stem l and having a tubular portion 5EL in which is adjustably mounted a rod 36, held in adjustable position within such tubular portion by means of the set screw 37. By these means the rod 36 may be moved inwardly or outwardly as to regulate the exact time of the sounding ofthe whistle. lWhen the flue cutter has been moved outwardly sufiiciently far to complete its work the whistle is sounded automatically whereupon the operato-r shuts ofi" the supply of motive `fluid to the motor and to the piston 3 by means of a throttle valve, not shown.

l claim:

1. A rotary flue cutter comprising a tool stock, an outwardly movable cutter mounted on one side of the tool stock, fluid pressure operated mechanism for moving the cutter outwardly, and thrust rollers mounted in the tool stock on t-he opposite side thereof, the cutter and rollers being in the same plane which is transverse of the tool stocl; and at right angles to the axes of such cutter and rollers.

2. A rotary flue cutter comprising a tool stock, an outwardly movable cutter therein7 Huid pressure operated mechanism for moving the cutter outwardly, and a pair of thrust rollers mounted in the tool stock on the side opposite the cutter and on either side of a diametrical line passing through the cutter, the cutter and rollers being in the saine plane which is transverse of the tool stock and at right angles to the aXes of such cutter and rollers.

3. A rotary flue cutter comprising a tool stock, an outwardly movable cutter therein, fluid pressure operated mechanism for moving the cutter outwardly, and thrust rollers mounted in the tool stock opposite the cutter, and having adjustable bearings.

4. A rotary flue cutter comprising a tool stock, an outwardly movable cutter therein, fluid pressure operated mechanism for moving the cutter outwardly, eccentric bearing blocks adjustably mounted in the tool stock, and a thrust roller having gudgeons mounted to rotate in the blocks.

5. A rotary flue cutter comprising a tool stock, an outwardly movable cutter therein, fluid pressure operated mechanism for moviis iao

ing the cutter outwardly, eccentric bearing blocks adjustably mounted in the tool stock, and a thrust roller having gudgeons mounted to rotate in the blocks, said blocks each having a projecting pin andthe tool stock having a recess to receive a block and a plurality of holes in such recess in one of which holes such pin is received.

6. A rotary iiue cutter comprising a tool stock, an outwardly movable cutter therein, fluid pressure operated mechanism for moving the cutter outwardly, said tool stock including a removable plate and collar each having recesses in alinement, eccentric bearing blocks adjustably mounted in said recesses, and a thrust roller having end gudgeons mounted to rotate in the blocks.

7. A rotary flue cutter comprising a tool stock, an outwardly movable cutter therein,

r fluid pressure operated mechanism for moving the cutter outwardly, said stock including a plate having a circular recess provided with two holes eccentric thereof and such having a similar recess in alinement with the first named recess, cylindrical bearing blocks in said recesses, each block having on its outer side an eccentric pin projection adapted to enter one or the other of said holes and on its Vouter side an eccentric bearing opening, and a thrust roller having gudgeons at opposite ends entering such eccentric bearing openings.

8. A rotary flue cutter comprising a tool stock, an outwardly movable cutter therein, fluid pressure operated mechanism for moving the cutter outwardly, said stock including a plate having a circular recess provided with two holes eccentric thereof and also including a detachable collar having a similar recess in alinement with the first named one, cylindrical bearing blocks in said recesses, each block having on its outer side an eccentric pin projection adapted to enter one or the other of said holes and on its other side an eccentric bearing opening, and a thrust roller having gudgeons at opposite ends entering such eccentric bearing openings.

9. A rotary flue cutter comprising a tool stock, an outwardly movable cutter therein, fluid pressure operated mechanism for moving the cutter outwardly, a thrust roller mounted in the tool stock which includes a removable outer collar having a bearing for one end of the roller and provided with a hub portion having a slot, an inner collar in said hub portion provided with a registering slot, a plate adapted to fit into both slots, and a retaining ring fitting over the hub of the outer collar.

10. A rotary flue cutter comprising a tool stock, an outwardly movable cutter therein, fluid pressure operated mechanism for moving the cutter outwardly, a thrust roller mounted in the tool stock which includes a removable outer collar having a bearing for one end of the roller and provided with a hub portion having a slot, an inner collar in said hub portion provided with a registering slot, a plate adapted to fit into both slots, and a retaining ring tting over the hub of the outer collar and having a slot adapted to register with the others, said ring being adjustable to cover the slot in the outer collar.

11. A rotary flue cutter comprising a tool stock, an outwardly movable cutter, a cylinder, a fluid pressure actuated mechanism including a piston therein coperating with the cutter to move it outwardly, a whistle mounted in the piston and arranged to communicate with the cylinder, and means arranged in the path of the whistle to operate it.

12. A rotary flue cutter comprising a tool stock, an outwardly movable cutter, a cylinder, a fluid pressure actuated mechanism including a piston therein coperating with the cutter to move it outwardly, a whistle mounted in the piston and arranged to communicate with the cylinder, said whistle including a whistle shell and a normally closed valve governing the communication between the cylinder and shell, and means arranged in the path of the whistle to operate it.

13. A rotary flue cutter comprising a tool stock, an outwardly movable cutter, a cylinder, a fiuid pressure actuated mechanism including a piston therein cooperating with the cutter to move it outwardly, a whistle mounted in the piston and arranged to communicate with the cylinder, said whistle including a whistle shell, a normally closed valve governing the communication between the cylinder and shell, and a projecting stem for said valve, and means arranged in the path of the valve stem to open the valve and thereby operate the whistle.

14. A rotary flue cutter comprising a tool stock, an outwardly movable cutter, a cylinder, a fluid pressure actuated mechanism including a piston therein coperating with the cutter to move it outwardly, a whistle mounted in the piston and arranged to communicate with the cylinder, said whistle including a whistle shell, a normally closed valve governing the communication between the cylinder and shell, and a projecting stem for said valve, and an adjustable rod arranged in the path of the valve stem to open the valve and thereby operate the whistle.

BERNHARDT HENRIKSON.

Vitnesses:

S. E. HIBBEN, ROBERT DOBBENMAN.

Copies of this patent may be obtained for dve cents each, by addressing the "Commissioner of Patents, Washington, D. C."

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