US986937A - Automatic pipe-cutting machine. - Google Patents

Description

D. A. MUDD. AUTOMATIC PIPE CUTTING MACHINE.

APPLICATION FILED JULY 30, 1910.

Patented Mar. 14, 1911.

3 SHEETS-SHEET 1- D. A. MUDD.

AUTOMATIC PIPE CUTTING MACHINE.

1 2110111011 FILED 1111.12.11.1910.

Patented Mar. 14, 1911.

3 SHEETS-8HEBT 2.

- EYE-.5

D. A. MUDD.

AUTOMATIC PIPE CUTTING MACHINE.

APPLIOAI'ION FILED JULYBO, 1910. Mar.

8 SHEETS-SHEET 3.

MW jiMd/dli n /&//////// DON A. MUDI), OF BOULDER, COLORADO.

AUTOMATIC PIPE-CUTTING MACHINE.

Specification of Letters Patent.

Patented Mar. 1.4, 1911.

Application filed July 30, 1910. Serial No. 574,601.

To all whom it may concern:

Be it known that 1 DON A. MUDD, a citizen of the United States, residing at Boulder, in the county of Boulder and State of Colorado, have invented certain new and useful Improvements in Automatic Pipe- )utting Machines; and I do declare the following to be full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in metal working machines and more particularly those adapted to cut lengths of pipe into nipples or small sections.

One object of the invention is to provide a simple and practical machine of this character which will be entirely automatic in operation.

Another object of the invention is to pro vide an improved cutting device for severing a piece of pipe, rod or other material into sections of predetermined length.

A further object of the invention is to provide in a machine of this character improved means for intermittently feeding a length of a pipe to the cutting mechanism whereby it will be cut up into pieces or sections of uniform, predetermined length.

lVith the above and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be hereinafter first fully described and then particularly pointed out in the appended claims.

In the accompanying drawings: Figure l is a side elevation of a machine embodying my improvements and especially adapted for automatically cutting pipe or other material into nipples or pieces of uniform length; Fig. is a top plan view of the machine; Fi 3 is an end View; Fig. 4 is a vertical section taken on line 47- 1 of Fig. 1; Fig. 5 is a detail horizontal section taken on line 55 of Fig 1; Fig. 6 is a detail view of the tappet wheel; Fig. 7 is a horizontal section through the main frame; Fig. 8 is a front elevation of the cutting mechanism, the face plate being removed and parts being broken away and in section; Fig. 9 is a similar view showing the gear ring in section and the cutter in effective position; Fig. 10 is a vertical section through the cutting mechanism, the plane of the section being indicated by the line 101.0 in Fig. 8; Fig. 11 is a side view of the gear ring; and Fig. 12 is a detail view of the cutter and its carrying lover or dog.

Referring more particularly to the drawings, 1 denotes a main supporting frame or support which is here shown as of rectangular shape provided with supporting legs 2, but which may be of any form and construction adapted to support the operative parts of the machine.

3 denotes a cutter head mounted for rotation and made hollow to receive a piece of pipe, rod or other work V which is to be cut up into sections or otherwise operated upon according to the nature of the tool or tools within the cutter head. This head comprises a circular plate or flange l keyed or otherwise secured to a hollow shaft 5 which extends longitudinally of the main frame 1 and is journaled in suitable bearings (3. The cutter head also comprises an outer face plate or cover plate 7 which is detachably secured to the plate 1: by bolts or similar fastenings 8 on the intermediate portions of which latter are arranged spacing sleeves 9 as clearly shown in Fig. 10.

The work V is fed through a circular opening in the face plate 7 into the hollow shaft 5 and it is operated upon by a tool 10 of any desired form, but here illustrated as a rotary disk cutter journaled in a slot in the intermediate portion of a dog or lever 11. The latter as shown in Fig. 8 has one of its ends pivoted at 12 to the plate 01' disk 4 and its other end is angularly disposed and formed with a cam shaped enlargement 13 adapted to be engaged and actuated by one or more trips l-fl: carried by a rotary member or element 15. The latter is preferably in the form of a gear ring of channeled form in cross section and mounted in annular grooves in the opposing faces of the plates 4t-7 as shown in Fig. 10, and the trips 14: are preferably in the form of anti-friction rollers arranged within the channel of the gear ring and mounted on transverse pivot pins 16.

The rotary head 3, which consists of the spaced plates or disks 4, 7 and the tool carrying lever 11., is adapted to be driven in the same direction as that in which the gear ring 15 is driven, (as shown by the arrows in Figs. 8 and 9), but at a slower speed than said ring whereby the trip rollers 14 will be caused to travel across the cam shaped end 13 of the tool carrying lever 11 to move the latter inwardly and consequently force the cutting tool 10 inwardly in a radial direction and into or through the work W. It will be seen, therefore, that when the machine is in operation the cutter head and gear ring will be driven in the same direction, but at different speeds so that the tool will be intermittently moved into operative engagement with the work to out or otherwise operate upon it.

In order to retract the cutter or other tool after each operation I preferably employ a leaf spring 17 and arrange it as shown in Fig. 8, so that its free end bears against the lever 11. 1 also preferably provide within the cutting head one or more work supporting rollers 18 on which the pipe or other work rests and is supported when the tool is in operation. These rollers are preferably removably journaled on stud bolts 19 so that they may be replaced by rollers of other sizes to permit pipes or rods of different diameters to be operated upon by the machine.

The gear ring 15 meshes with. a pinion 20 on a main drive shaft 21 journaled in bearings 22 on the main frame and disposed parallel with the tubular shaft 5. The shaft 5 is also driven from the shaft 21 by fixing upon it a gear 23 which meshes with the pinion 2 1 on the shaft 21. The pinions 202-l have the same number of teeth but the gear ring 15 has a greater number of teeth than the gear 28, consequently said ring will travel slower than the cutter head which is fixed to shaft 5.

Any means may be provided for rotating the main shaft 21, but as illustrated its rearend carries a belt wheel or pulley 25 to which power may be applied.

My improved means for intermittently feeding the work V to the cutting mechanism comprises a slide or carriage 26 mounted to travel on a guide frame 27 and carrying a vise 28 or other suitable clamping device for the work. As illustrated the frame 27 consists of two tubes or pipes which serve as tracks for the slide or carriage 26 and which have their inner or rear ends fixed to the frame 1 as shown in Fig. 7 and their outer ends united by cross bars 29. The slide or carriage 26 is here shown as a horizontally disposed metal plate having it ends bent as shown at 80 to partially surround and slide upon the tubular track members 27, see 4:. The clamping device 28 as shown in Fig.4 is in the form of a screw vise bolted to the slide or carriage 26, but it will be understood. that any other suitable work clamping device may be employed in lieu of the one illustrated.

Deoending from the slide or carriage 26 is a bracket 31 to which is fastened an endless feed chain or equivalent element 32 adapted to be intermittently actuated to feed the slide toward the main frame and consequently feed the pipe or other work W into and through the cutting head and the hollow shaft 5. The chain 32 passes around a guide sprocket wheel 38 journaled in an angle bracket 34- on one of the crossbars 29 and the upper stretch of said chain preferably passes through one of the tubular track members 27, see Fig. 1. The chain 32 also passes around a drive sprocket wheel 85 fixed to a transverse shaft 36 journaled in suitable bearings in the main frame 1. Fixed to the shaft 36 is a beveled gear 37 which meshes with a beveled pinion 38 fixed to a short shaft 39 journaled in suitable bearings as shown in Fig. 7. Keyed or otherwise fixed to the shaft is a tappet wheel 40 from which projects a plurality of radial arms adapted to be engaged and actuated by one or more trip lugs or pins ll fixed to and projecting laterally from an. endless chain or equivalent element 12. As shown in Fig.

3 the chain 4-2 passes around a driving sprocket wheel 41:3 fixed to the rear end of the hollow shaft 5 and also around a sprocket wheel 44 loosely mounted as shown in Fig. 5, adjacent the tappet wheel 40. The chain 12 must be of proper length and may pass over one or more guide sprocket wheels 45, only one of the latter being illustrated and that one being journaled on the upper end of a standard 46 rising from the main frame.

In operation, the piece of pipe or other work to be operated upon is clamped in the vise 28 when the slide 26 is adjacent the outer end of the guide frame and the outer end of said pipe projects through the cutting head and into the hollow shaft 5. When power is applied to the main drive shaft 21 the shaft 5, and consequently the cutter head with the cutter or other tool 10, is rotated in the direction of the arrow in Fig. 8 and the gear ring 15 is likewise rotated in the same direction but at a slightly slower speed. When one of the trip rollers 14 is passed by the cam end 1550f the cutter carrying lever 11 the cutter will be forced into the pipe to sever the same and the instant said roller releases the lever the spring 17 returns it from the position shown in Fig. 9 to the position shown in Fig. 8. The operation of the parts of the machine is such that after the cutter has been thus actuated the trip lug 41 on chain 12 engages one of the arms of the tappet wheel 40 and consequently aetuates the shaft 89 through a portion of a revolution. The movement of shaft 39 is imparted to the shaft 36 and the feed chain 32, consequently the slide or carriage 26 will be shifted a predetermined distance toward the main shaft to bring the pipe l/V into proper position with respect to the cutter 10 ready for the next operation 0f said cutter. The nipples or short pieces of pipe will be forced through the hollow shaft 5 and drop out of its rear end. It will be seen, therefore, that the machine is entirely automatic in operation and will quickly and effectively cut up a piece of pipe, rod or other material into sections of uniform and predetermined length for use as nipples.

\Vhile I have shown and described in detail the preferred form of my invention, I wish it understood that various changes in the form, and proportitm and arrangement of parts and in the details of construction may be resorted to within the spirit and scope of my invention and that the invention may be embodied in other forms of machines for performing different kinds of work.

I claim:

1. The combination of a main frame, a hollow cutting head mounted thereon, means for rotating said head, an intermittently actuated tool on said head, a guide extending from the main frame, a slide mounted on said guide and adapted to feed work into the cutting head, and means for intermittently moving the slide.

2. In a machine for the purpose set forth, a cutting mechanism comprising a rotary head, a ring associated concentrically therewith, means for rotating the head and the ring in the same direction at different speeds, a tool-carrying member mounted on the head and projecting into the ring, and a series of trips carried by the ring and adapted to engage the projecting portion of the toolcarrying member.

3. In a machine of the character set forth, a cutting mechanism comprising a rotatably mounted cutter head adapted to receive the work, a rotary element associated with said head, means for rotating said head and element in the same direction at different speeds, a spring pressed movably mounted tool carrying member upon said head and a trip carried by said element to engage and actuate said member.

4. In a machine of the character set forth, a cutting mechanism comprising a rotatably mounted hollow shaft, a hollow cutter head fixed to said shaft, a rotary ring associated with said head, means for rotating said ring and said head and shaft in the same direction but at different speeds, work supporting rollers in said head, a spring pressed mov aloly mounted tool carrying member in said head and having a cam portion at its outer end and a series of trip rollers in said ring to coact with said cam portion of the tool carrying member.

5. In a machine of the character set forth, a cutting mechanism comprising a rotary cutting head composed of spaced plates adapted to receive the work, a hollow shaft rotatably mounted and carrying said head,

a gear ring rotatably mounted in said head act with said member, a gear ring on said.

hollow shaft, a main drive shaft rotatably mounted, and pinions on the latter meshing respectively with said gear and said gear ring.

6. In a machine of the character set forth, the combination of a main frame, a rotary cutting head thereon to receive the work, automatic means for intermittently feeding work into said head, a rotary element associated with said head, means for rotating said element and said head in the same direction at different speeds, a tool carrying member in said head, means on the head for holding the tool-carrying member away from the work, and means carried by the rotary element for moving the tool-carrying member to the work.

7. In a machine of the character set forth, the combination of a main frame, a hollow shaft mounted thereon, a cutting head on said shaft, an intermittently actuated tool on said head, a guide, a slide movable on said guide, means carried by said slide to hold the work and feed it through said head and hollow shaft, and means for intermittently moving said slide.

8. In a machine of the character set forth, the combination of a main frame, a hollow shaft mounted thereon, a cutting head on said shaft, an intermittently actuated tool on said head, a guide, a slide movable on said guide, means carried by said slide to hold the work and feed it through said head and hollow shaft, a movable endless member connected to said slide for actuating the same, a tappet wheel, means for imparting the movement of said tappet wheel to said endless member, and a second endless member actuated from said hollow shaft and carrying a trip to coact with said tappet member.

9. In a machine of the character set forth, the combination of a main frame, a hollow shaft mounted thereon, a cutting head on said shaft, an intermittently actuated tool on said head, a guide, a slide movable on said guide, means carried by said slide to hold the work and feed it through said head and hollow shaft, an endless chain connected to said slide for moving the latter and means for guiding said chain, a drive wheel for said chain, a rotary tappet wheel geared to said drive wheel, a second endless chain carrying a trip to coact with said tappet wheel, a guide sprocket wheel for the last mentioned chain loosely mounted adjacent said tappet wheel and a driving sprocket wheel for the last mentioned chain fixed to said hollow shaft.

10. The combination of a frame, a drive shaft mounted thereon, a hollow cutting the tool-holding member, gearing connecthead supported by the frame, a tool-holding member on the cutting head, a trip element associated with the cutting head to act upon means for intermittently connecting said 10 means to the drive shaft.

In testimony whereof I have hereunto .set my hand in presence of two subscribing witing the drive shaft with the head and said nesses.

trip element to rotate the same in the same DON A. MUDD. direction at different speeds, a guide pro- Witnesses: jecting from the frame, a slide mounted on G. H. GRIEsBAUER,

said guide, means for moving said slide, and Mrs. K. SMooT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Correct It is hereby certified that in Letters Patent N 0. 986,937, granted March 1-1, 1911, upon the application of Don A. Mudd, of Boulder, Colorado, for an improvement in Automatic Pipe-Cutting Machines, requiring correction as follows: Page 1, lines 1(J610S, the words but at a slower errors appear in the printed specification speed than said ring whereby the trip rollers 14. will be caused to travel across th cam shaped end should he stricken out and the words but at (1 fi/,sfm's z@(Z 15/1 said ring whereby the cam shaped and 13 will be caused in trawl under the trip rel/ers- 14 be inserted instead; page 2, line 1, the referenee-numeral 13 should be stricken out; and that the proper corrections have been made in the files and records of the Patent Oflice, to correct an error in accordance with the report of the examiner of May 13, 1911, and are hereby made in said Letters Patent.

Signed and sealed this 25th day of July, A. D., 1911.

E. n. MOORE,

Chmmz'ssz'oner of Patents.

[SEAL

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