US2248360A - Button making machine - Google Patents

Description

Jul 8, 1941. w. E. KNOTT 2,248,360

BUTTON MAKING MACHINE Filed Oct. 9, 1956 2 Sheets-Sheet 1 I 2/ ff" L I 5 INVENTOR.

VVAR/PENEEVO??? BY I l 1 ATTORNEY.

| I I I July 8, 1941. w, KNQTT 2,248,360

BUTTON MAKING MACHINE Filed Oct 9, less 2 Sheets-Sheet 2 I "lmlmlllllnn...

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Patented July 8, 1941 BUTTON MAKWG MACHENE Warren E. Knott, Federalsburg, Md, assignor to Excelsior Pearl Works, Inc., New York, N. Y., a

corporation of New York 4 Claims.

This invention relates to button making machines, and particularly to such as are known in the trade as Barry automatic facing and drilling machines.

The objects of the invention are to improve such machine that it may produce better buttons; to obtain greater accuracy of drilling the thread-holes in the buttons; to take up wear and still obtain accurate drilling; to provide for a floating support for the drill bands; to secure simplicity of construction and operation; and to obtain other advantages and results as may be brought out in the following description.

Referring to the accompanying drawings in which like numerals of reference indicate similar parts throughout the several views;

Figure 1 is an end elevation of a part of the drill end of a machine embodying the present invention;

Figure 2 is a perspective view of the drill bands and associated parts;

Figure 3 is a perspective view of .a certain bracket for mounting an outer end of a drill band;

Figure 4 is a perspective view of a certain bracket for mounting the meeting ends of the drill bands; and

Figure 5 is a perspective view of a certain guide dowel and bracket.

In the specific embodiment of the invention illustrated in said drawings the reference numeral l0 designates one of a plurality of button holders the upper end of each of which receives a button in a horizontal position. Above each button and button holder is a drill holder I I which continuously rotates to keep a drill I2 carried thereby spinning. Both the button holder and drill holder have at this part of the machine, a simultaneous and continuous orbital revolution, and during the same the drill i2 is periodically depressed to pass through the button. This action is accomplished by having the upper end of the drill holder riding in contact with depressing cams l3 supported at proper position above the orbital path of the drill holder. A spring M on the drill holder tends to normally raise the drill and keep the drill holder in contact with the cam.

In order that the drill may make a plurality of properly spaced holes in the button, for instance four holes evenly spaced as corners of a square, the drill holder and button holder are axially offset from each other equal to the offset of one button hole from the center of the button. Between each depression of the drill, that is to say, while the drill is in its upper position, the

, button holder and button ar given a quarter turn. This turning has heretofore been accomplished by use of kicker studs K engaging notches N in the circumference of a part L forming a part of the button holder to rotate and revolve therewith. For the distance of orbital path of travel of the button holders between the periodic rotation or quarter turn thereof, the button holders have been held from rotating by use of square clocks l5, known as knocker .pulley blocks. secured upon the button holder axially centered with respect thereto.

According to the present invention, I provide a pair of drill bands I6, H. for these knocker blocks to successively ride against at their edges. It is a feature of the invention to mount these drill bands so as to beindependently movable toward and from the orbit of the blocks, and to have only two blocks riding against each band when the drill is depressed to contact the button. The inner face of the drill bands is, in general, arcuate upon the orbit of travel of the drill holders, but intermediate the ends of the first is a notch l8, and formed between the meeting ends of the bands is another notch I9 and intermediate the ends of the second band is a third notch 29, As a block rides from the entry end of the first block to the first notch it is held steady by intimate contact therewith and thus precisely positions the button holder and button. As the block reaches the first notch its corner enters the notch and both permits and causes the block to make a quarter turn, acting in conjunction with the kicker stud K and its notchN, so another side edge of the knocker block then rides upon the arcuate surface of the band from that notch to the notch I9 between the ends of the bands. There the block again turns and the next face thereof rides against the arcuate surface of the second band as far as the intermediate notch 20, where it turns again and rides to the exit end of the band. It is during the interval that two blocks only are riding against a band that the drills are depressed into engagement with the buttons for making the holes therein. In practice three blocks arrive at the three notches and turn substantially at once.

Support of the drill bands is an important feature, especially to maintain the intimate contact of the bands with the blocks at time of inception of the holes in the buttons regardless of wear on bands or blocks.

The support for the ends of the drill bands is obtained by a bracket 2| having a split sleeve 22 for mounting it upon a fixed post 23 forming part of the machine. Said bracket likewise provides a shelf portion 24 extending from the sleeve to project beneath a rib 25 directed horizontally from the band. Upon the shelf portion is attached a brace portion 26 with an upstanding flange 21 between which and rib 25 of the band extends a guide bolt 28 surrounded by a compression spring 29. The bolt passes through a slot 30 in the upstanding flange, and will limit inward movement of the drill band towards the path of the blocks. The spring forces the band toward and into intimate contact with the block. A suitable cleat 3| may be secured by bolt 32 upon the shelf in spaced relation therefrom so as to overlie the rib of the band and hold it in sliding engagement therewith and with the shelf.

At the meeting ends of the bands is provided a bracket 33 having a sleeve 34 for mounting upon a fixed post 35 forming part of the machine. Said bracket provides a shelf portion 36, in this instance above the sleeve which extends horizontally forward to underlie the ribs of the bands. To the front edge of each rib is attached a bracket 3'! from a mid-portion of which depends a guide dowel 38. The forward edge of the shelf portion has a slot 39 cut rearwardly .therein of appropriate size to receive said dowel 38 and thereby restrict movement of the band radially of the holder orbit. This shelf portion likewise has a brace portion 40 attached thereto with an upstanding flange 40' between which and ribs 25, 25 of the bands extend guide bolts 4| surrounded by compression springs 42. These bolts pass through a slot 43 in the upstanding flange, and will limit inward movement of the drill bands toward the path of the blocks. The springs 42 force the bands toward and into intimate contact with the blocks. Suitable cleats 44, 44 may be secured by bolts 45, 45 upon the shelf in spaced relation therefrom so as to overlie the ribs of the bands and hold them in sliding engagement therewith and with the shelf.

Having thus described the invention, I claim:

1. A machine having knocker blocks carried in an orbital path, of drill bands meeting at ends thereof, means mounting said bands at their meeting ends with freedom of movement independent of each other, means for guiding the bands in their movement, in a radial direction with respect to the orbital path of the knocker blocks.

2. A machine having knocker blocks carried in an orbital path, of drill bands meeting at ends thereof, means mounting said bands at their meeting ends with freedom of movement independent of each other, means for guiding the bands in their movement in a radial direction With respect to the orbital path of the knocker blocks, and means for exerting spring pressure on each of said meeting ends substantially in the same direction in which the band is guided.

3. A machine having knocker blocks carried in an orbital path, guiding means in engagement with less than all of said blocks at one time, said means having a floating mounting enabling said means to approach into intimate contact with said blocks, and means for constantly actuating said guiding means into such intimate engagement with blocks contiguous thereto.

4. A machine having knocker blocks carried in an orbital path, of a drill band of a length to engage substantially no more than two blocks at one time, and means actuating the band into intimate contact with the blocks contiguous thereto.

WARREN E. KNOTT.

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