US1884143A

US1884143A - Tube punching apparatus

Info

Publication number: US1884143A
Application number: US381496A
Authority: US
Inventors: Victor C Norquist
Original assignee: Butler Manufacturing Co
Current assignee: Butler Manufacturing Co
Priority date: 1929-07-27
Filing date: 1929-07-27
Publication date: 1932-10-25
Anticipated expiration: 1949-10-25

Description

Oct. 25, 1932. v. c. NORQUIST 1,884,143

TUBE PUNCHING APPARATUS Filed July 2'7, 1929 2 Sheets-611%: l

A INVENTOR. Viczar (Z Mrr uisf M J2 Q Z ATTOR EY Oct. 25, 1932. v. c. NORQUIST TUBE PUNCHING APPARATUS 2 Shets-$heet 2 Filed July 27, 1929 R m E m w n aw A r. l V J Y B Patented Oct. 25, 1932 UNI-TED STATES PATENT-f OFFICE VICTOR o. NORQUIST, 01E KANSAS CITY, MISSOURI, ASSIGNOB TO BUTLER MANUFAOTUR- ING ooMPANY, OF KANSAS CITY, MISSOURI, A CORPORATION OF. MISSOURI TUBE PUNCHING AP PARJ-K'I'U'S Application med J'uly' 27, 1929. Serial No. 381,496.

This invention relates to improvements in tube ventilators for grain and a machine for making the same, and refers more particularly to the mechanism or machine for mak- 5 ing the tubes, as tube ventilators of this character, comprising a hollow pipe perforated at intervals to allow air to pass through the body of the grain have been known and used for some time.

Among the important objects of the inventionare: to provide a machine by means of which the metallictubes can be perforated by projecting 'therethrough a plunger upon which are mounted cutters which perforate the tube at regular intervals; to provide a machine in which the plunger may be rotated so that it cuts the sets of perforations at relatively equally spaced apart intervals by a single passage to the end of the tube and back to its original position.

Fig.1 is a diagrammatic side elevational view of the machine with parts broken away. Fig. 2 is a view taken along the line 22 in Fig. 1. Fig. 3 is a View taken along. a the line 3-3 in Fig. 2. Fig. 4 is a side view of the clamp or mold portion in which the tube is held during the perforating operation. Fig. 5 is a side view of one of the'ventilator tubes with aportion near the center of the tube broken away. Fig. 6 is a fragmentary view of the tube with parts in section. Fig. 7 is an end view of the tube Shown in Fig. 6.

Referring to the drawings, the machine consists of a channel member which supports both the hydraulic or air cylinder and also the clamps for the tube. This channel is held on suitable standards not shown.

Referring first to the plunger or cutter head which is forced through the tube or ventilator by means of a hydraulic or compressed air cylinder; the cylinder is designated in the drawings as 2. This cylinder may be a compressed air or hydraulic cylinder. In either case, the fluid under pressure is supplied to the cylinder through a pipe 3 controlled by a throttle valve 4. The throttle valve is of such character that the compressed fluid may be introduced into the cylinder at either end so that the piston may be forced in either direction in the cylinder; The pipes which are connected up to the cylinder have been broken away in the drawings inthe interest of simplicity. Pipe 5 supplies fiuid to the opposite end of the cylinder, while pipe 6 serves as a supply pipe and pipe 7 as a discharge pipe. The cylinder is held In place on the channel member 1 by means of clamps 8. I I

The piston rod attached to the hydraulic or. a1r piston extends through the frontof the cylinder through a packed joint not shown and is designated by the number 9. On this rod is mounted the plunger 10. In cutaway portions of-the plunger are positioned the cutter members 11. These cutter members are circular and have teeth 12 upon their outereperiphery which Serve to, cut the ;lots 513 in the ventilator tubes 14 shown in The cutout portions of the plunger are in diiferent planes so that the cutters themselves lie in different planes relative to the axis of the plunger and piston. Also there are two cutters 11 in each cutout portion of theplung er,'the rotating axis of the two cutters being offset from each other. so that one cutter contacts and cuts the surface of the'tube diametrically opposite from the other cutter positioned in the same cutout portion of the plunger. This eccentric arrangement is shown bestin Fig. 2 of the drawings The ventilatortubes which are to be perforated or slot-ted as shown in Fig. 5 are of a thin metal such as galvanized iron. Down spout pipes are used, as they are of low cost and are of the desired gauge of metal. These tubes or pipes are placed between the upper and lower molds or clamps 13 and 14:, shown in Fig. 3. To separate the mold, a lever15, which is an extension of the yoke member 16, is swung upon its pivots 17. This yoke through the bars 18 moves the horizontal bars 19 which are in turn attached to the eccentric plates 20. These eccentric plates, near their upper ends, have inclined slots 21 in which slide the pins 22. These pins are held in place I on the top ofzthe mold member 14 by means of the plates 23 and bolts 24. The eccentric plates 20 are pivoted at the bottom of the channels on the pins 25.

Along the side of the clamping portion of the machine is an inclined chute 26 in which is rolled the extruding block 27. V

In operation, the lever 15, which is an extension of the yoke 16, is moved so that the pins 22 slide into the lower end of the inclined slots 21. As the pins 22 are rigidly fixed to the upper clamp or mold half 14, this portion of the mold is raised or separated from the lower portion 18.

The tube or pipe is then inserted into the mold and the upper clamp or mold half lowered so that the pipe is held in position, as the inside diameter of the circular mold halves corresponds to the outer diameter of the pipe to be perforated. By means of the throttle 4 the plunger wi hin the cylinder top is moved forwardly, forcing the plunger 10 to enter into the hollow end of the tube 14. The plunger continues to advance throughout the length of the tube. The cutters on the plunger are so arranged that perforations are cut on diametrically opposite sides of the tube in three different planes relative to the axis of the tube.

When the plunger has passed entirely through the tube and out through the opposite end, it is rotated through an angle of 45 or any other suitable angle, by means of the lever 28, and then again withdrawn through the tube, at which time six more rows of perforations are made by the cutter members, so that twelve rows of perforations are made through a single complete cycle of the plunger.

The mold or

clamp members

13 and 14 are again separated by a thrust of the lever 15, and the extruding block 27 is fitted in the end of the plunger. This extruding block is of slightly larger diameter than the plunger and extrudes the perforated tube from the mold as the plunger is advanced as in the cutting operation by the control throttle 4.

If :desired, there may be placed within the ventilator tube a separate tube such as that shown at 29. The use of the internal tube of the character shown at 29, however, forms no part of the present invention. Such a tube is held in place by means of clamps shown at 30 in Fig. 7.

By the use of this machine, grain ventilating tubes may be perforated by projecting the cutter through the tube and back to its original position and rotating the cutter at the end of its stroke to position the cutters relative the tube so that the slots or perforations will be at regular intervals throughout its periphery.

- The tapered or pointed end portion 31 is fitted onto the end of the tubes to facilitate the insertion of the ventilator tubes into the body of the grain.

I claim as my invention:

1. Machine for making grain ventilators comprising a separable mold for holding the ventilator and having longitudinal troughs cut in the interior surface thereof, a plunger insertable in the mold, circular perforation cutters mounted and rotated axially of the plunger and positioned in different planes so that the perforated edges of the cutters coincide with the troughs in the mold.

2. Machine for making grain ventilators comprising a separable mold for holding the ventilator and having longitudinal troughs cut in the interior surface thereof, a plunger insertable in the mold, circular perforation cutters mounted and rotated axially of the plunger and positioned in different planes so that the perforated edges of the cutters coincide with the troughs in the mold, and means for rotating the plunger on its axis to position the cutters at different positions relative to the mold.

3. A machine for making perforated tubes, comprising a separable mold having longitudinal troughs cut in the interior surface thereof for holding the tube, a reciprocating ram rotatable upon its axis and insertable in the mold, and perforation cutters on the ram adapted to perforate the tube upon insertion of the ram in the tube and movement there along.

4. In a tube punching machine, areciprocating member adapted to be reciprocated within a tube, a plurality of rotatable members carried by the reciprocating member, said rotatable members being disposed in planes at an angle to each other and provided with punching elements, said elements adapted to perforate the tube upon movement of said reciprocating member therealong.

5. In a tube punching machine, a reciprocating member adapted to be reciprocated within a tube, said reciprocating member being provided with a recess, and a. plurality of rotatable members provided with punching elements disposed in said recess, said punching elements adapted to perforate said tube upon movement of said reciprocating member therealong.

' 6. In a tube punching machine, a reciprocating member adapted to be reciprocated within a tube, said reciprocating member being provided with a recess, and a plurality of rotatable members provided with punching elements disposed in eccentric relationship within said recess and adapted to perforate said tube upon movement of said reciprocating member therealong.

7. In a tube punching machine, a reciprocating member having a plurality of recesses disposed in angular circumferential relationship, said member adapted to be reciprocated within a tube, rotatable members disposed in said recesses, said rotatable members being provided with punching elements, adapted to perforate said tube u n movement ofsaid reciprocating member t erealong.

8. A machine as in claim 4 having a mold surrounding said tube for cooperation with said punching elements.

9. A machine as in claim 5 havin a mold surroundingsaid tube for cooperation with said punching elements.

10. A machine as in claim 6 having a mold surrounding said tube for cooperation with said punching elements.

7 11. A machine as in claim 7 having a mold surrounding said tube for cooperation with said punching elements.

VICTOR O. NORQUIST.