US549140A - Stud setting - Google Patents

Description

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STUD SETTING APPLIANCE.

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UNITED STATES PATENT OFF CE.

ALBERT LATHAM, OF SPRINGFIELD, MASSACHUSETTS.

STU D-SETTING APPLIANCE.

SPECIFICATION forming part of Letters Patent No. 549,140, dated November 5, 1895.

Application filed September 22, 1892. Serial No. 446,511. (No model.)

To all whom it may concern:

Be it known that I, ALBERT LATHAM, a citizen of the United States of America, residing in Springfield, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Stud-Setting Appliances, of which the following is a specification, reference being had to the accompanying drawings and letters of reference marked thereon.

In the drawings, like letters of reference indicating like parts, Figure 1 is a side elevation of one form of constructing my device, a part being in section. Fig. 2 is a like view of a modified form. Fig. 3 is a side elevation in section, on an enlarged scale, of astud with the setting-tool in position to begin the heading or setting operation. Fig. 4 is a like view after the setting operation is completed and before retraction of the tools, and Fig. 5 is a side elevation of another modification in the form of constructing my device.

In detail, a indicates the main frame; I), and c, overhanging arms projecting from the main frame; d, the guide rod or stem, and e the setting-tool, which operates to turn the edge of the stud-shank, as shown in Figs. 3 andat.

f indicates an operating-lever; g, a frictionscrew; h, springfl i, adjusting nuts or collars; Z, clearance-openings in the setting-tool; m, a spring; a, collar; 0, adjusting-nut; p, a pin uniting the collar and stem; 1", a collar fixed to and moving with the setting-tool; s, a bellcrank lever, and t a slotted plate.

The special object of my invention is to provide an appliance by which studs formed of a shell filled with rubber, cement, or other similar material may be rapidly set and riveted in position without distorting any of the parts. Studs of this kind have heretofore been set by the employment of a reciprocating setting-tool, provided with a central guide or stem; but the motion of the guide has not heretofore been limited, so that as a frequent result, the stud is injured because of the fact that the projecting stem pressed against the filling, and it has been found very difficult to produce the desired reciprocating movement of the guide rod or stem in the settingtool, and the nose of the guide-rod has heretofore become clogged, thus materially interfering with the operation of the device, and

as the guide-stem has heretofore been operated by a spring its uncertain action has been a frequent cause of puncturing and destroying the stud.

My invention consists in a construction and operation whereby the objects of my invention are attained and the difficulties heretofore experienced are overcome.

Describing first the device illustrated in Fig. 1, the main frame has pivotally mounted upon it a lever f, through which the body of the stem or the guide-rod 01 passes. The short arm of the lever f bears against the head or collar g upon the top of the setting-tool e and forces the same downwardly, carrying the face of the setting-tool to the desired position with reference to the stud and at the same time contracting the spring h, which is located between the collar 9 and the upper face of the overhanging arm 0. The body of the guidestem (Z has a tight sliding fit within the body of the setting-tool, occasioned by the setscrew g, and when the setting-tool is carried downwardly or toward the stud the stem is carried with it until the collar 1' is brought in contact with the upper surface of the overhanging arm b, thus limiting the downward motion of the stem, but leaving the settingtool free to be moved until the riveting operation is completed. The pressure upon the lever then being released allows the spring h to operate to raise the setting-tool and with it the stem until the collar or nut j engages the lower face of the overhanging arm I), after which the setting-tool continues its upward movement until the expansive power of the spring is exhaused, thus forcing the nose of the stem outwardly. It will be seen that by this arrangement the guide-rod remains projected a sufficient distance from the face of the setting-tool to guide the stud to the proper position with reference to the setting-tool and hold it in accurate central position, and that when the position of the nose of the guidestem is such that further motion would en- .danger the stud then its forward motion interior, and if a guide-stem be used whose edges are not corrugated then the stud is liable to be distorted or thrown to one side and the setting operation be rendered unsatisfactory. To avoid this danger, I provide the nose of the guide-stem with cuts or recesses, leaving comparativelynarrow edges to enter and be in contact with the walls of the studshank, and I find with this arrangement a lump or obstruction will not operate to cause the disarrangement with reference to the registerin g of the stud and setting-tool, but that these edges will cut their way through such obstruction and maintain the stud-shank in proper register for the setting-tool. It has been found heretofore, also, that material would become detached from the stud-shank and adhere to the nose and sides of the guidestem, and when the same is retracted considerable of the adhering matter would be carried into the opening, and thus clog the device and prevent the free movement of the guidestem in the setting-stool. To aid in overcoming this defect, I provide the portion of the guide-stem which passes through and is in contact with the face portion of the settingtool with spiral corrugations, so that ample clearance will be had and the edges of the grooves serve to clear the opening through the face end of the setting-tool, and thus preventing the adhering of any foreign matter in this opening. I also provide clearance-openings l in the sides of the setting-tool head just above the face, so that all foreign matter may readily escape therefrom and binding be avoided.

The collars or nuts 1' andj on the guide stem serve to limit the motion of the same, and this limit may be varied as circumstances may direct.

In Fig. 2 I have illustrated another form of device for producing the same desirable result. The frame is substantially the same as first described. The setting-tool body is eX- tended upwardly through the upper overhanging arm 11 and the operating-lever is connected to the body of the setting-tool above the arm I). The motion of the lever in a direction to carry the setting-tool toward the stud allows the spring m to operate to force the collar n in the same direction, which motion c011- tinues until the lower face of the adj usting-nut 0 comes in contact with the upper face of the arm 0, which operates to prevent any further movement of the guide-stem in that direction. The collarn is secured to the body of the guidestem by the rod 19, which passes through the collar and rod, and the body of the setting-tool is slotted to permit movement of the stem independently of the setting-tool. The distance of the throw of the guide-stem may be varied by turning the adjusting-nut o. It will now be seen that the downward motion of the setting-tool body will permit movement of the guide-stem with it until the adjusting-nut is home, at which time the nose or point of the guide-stem has reached the desired point, as

shown in Figs. 3 and 4, 2'. 6., it has entered the opening in the stud shank and stopped before it is brought in contact with the material at the base of the opening, thus avoiding all danger of crushing or loosening the filling at which point it is held, the setting-tool, however, continuing to move toward the stud until. the setting operation is complete. A reverse motion of the lever will carry both the setting-tool and guide-stem upwardly until the spring on operates to restrain further upward movement of the guide-stem, thus projecting the nose of the guide-stem out from the setting-tool and by this operation (drawing it in and projecting it outwardly) clearing the surface from all adhering material.

In Fig. 5 I illustrate a device wherein the employment of springs is dispensed with and the motions are all positive. In this the operative lever is attached to the body of the setting-tool. The guide-stem is mounted within the body of the setting-tool and has motion therein, as before described. An arm '1' is mounted upon the body of the setting-tool, and pivotally mounted on the arm 1' I arrange a bell-crank lever 8, one arm of which passes through a slot in the wall of the body of the setting-tool and enters a recess in the body of the guide-stem, the head on this end of the bell-crank lever being curved to allow the requisite motion. A plate tis mounted on the main frame of the machine, and this plate is provided with a slot, as shown. A pin in the vertically-arranged arm of the bellcrank lever traverses this slot, and when, by reason of the change of the direction of the slot, the pin is changed in the direction of its motion the arm to which it is attached will move with it and the opposite arm be thrown up or down, as the case may be. If 110w the operating lever be moved to carry the setting tool downwardly from the position shown in the drawings, the arm 0", mounted upon it, will be moved with it and the bellcrank lever be moved in like manner so long as the pin a traverses the vertical portion of the slot or portion which lies parallel with the motion of the setting-tool, thus maintaining the nose of the guide rod or stem in position in advance of the face of the setting-tool and forcing it into the shank of the stud with sufficient force to carry obstructing material be fore it. When, however, the nose of the guide-stem has entered the shank of the stud a sufiicient distance, the face of the setting tool will have begun to engage the stud-shank and the pin a will have reached that portion of the slot which stands at an angle to the traverse of the setting-tool, thus turning the bell-crank lever 8 upon its pivot and carrying the arm in engagement with the guide-stem upwardly, or, more properly speaking, maintainin g the guide-rod at rest while the settingtool continues its motion toward the stud, thus completing the setting operation while the guide-stem is at rest, thus preventing danger of puncturing or injuring the stud by reason of pressure of the stem. The setscrew 11 serves to limit the relative positions of the nose of the guide-stem and face of the setting-tool and prevent undue strain upon the lever s. The adjustment should be such as to retract the point of the guide-stem to a position flush with the wall of the face of the setting-tool next to it, and when in such position the forcing of the setting-tool and stem farther to complete the upsetting operation will not endanger the stud. Hence the slot for the traverse of the pin a, after passing the incline, is carried in a line parallel with the traverse of the setting-tool, the portion of the slot at an angle being sufficient to allow the faces of the two tools to reach the desired position, as above described. Where the motion is positive, as in the construction last described, there is not the necessity of the sharp-edged point upon the stem, because, as before stated, the power will be sufficient to enable it to clear its way and bring the studshank into accurate register with the tool.

It will readily be seen that the head or face end of the setting-tool may be made integral with the body portion, or that it may be made separately and attached thereto in any con- Venient manner, and that the end of the guide rod or stem may be made integral with or detached from the body, as may be desired. It will be seen that if the stud-holding die be arranged to move toward the setting-tool the same result will be accomplished.

I am aware that a button-fastening machine has heretofore been made, as shown in Letters Patent No. 359,631. I am also aware of Letters Patent to Platt, No. 481,588, for machine for attaching buttons, and of patent to Edmands, No. 214,031, for tool for setting eyelets, and I make no claim to the construction shown in either of said patents. The guide-stem in my device operates to cause the accurate registry of the stud or hook shank and setting-tool and is restrained from farther forward movement after the face has reached a point near the base of the opening in the shank, so the guide-stem will not be projected farther, although the setting-tool continues to approach the shank until the setting operation is complete.

Having therefore described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a stud setting machine, the combination of a suitable frame, a supporting die for the stud to rest against, a reciprocating setting-tool mounted in said frame to register with a stud resting against the supporting die, a guide stem projecting through the face of the setting tool, means to cause the stem to enter the stud shank, and a positive stop carried downward by the guide stem, contacting with a part of the frame of the machine, and thereby preventing the nose of the stem from coming in contact with the base of the opening in the stud shank, while leaving the setting tool free to complete the setting operation, substantially as'described.

2. In a stud setting machine, the combination of a suitable frame, a supporting die for the stud to rest against, a reciprocating setting tool mounted in said frame to register with a stud resting against the supporting die, a guide stem projecting through the face of the setting tool, means to cause the stem to enter the stud shank, and a positive stop carried downward by the guide stem, contacting with a part of the frame of the machine, and thereby preventing the nose of the stem from coming in contact with the base of the opening in the stud shank, while leaving the setting tool free to complete the setting operation, and a screw-threaded adjusting device whereby the point of stoppage of said stem can be nicely adjusted, substantially as described.

3. In a stud-setting machine, the combination with a suitable frame and a stud-holding support thereon, of a hollow setting-tool provided with clearance openings adjacent.

to its setting-end, and a guide-stem in' the hollow of the setting tool formed with vertical recesses in its lower end portion and provided with spiral corrugations in its lower portion above the recessed portion, substantially as described.

4. The combination in a stud-setting machine, of a suitable frame, a stud-holding device mounted thereon, a hollow reciprocating setting-tool, a guide-stem arranged in the bore of the setting-tool to normally project from the lower end thereof, a positive stop in the body of the guide-stem, and a shoulder on the machine frame against which the stop lodges and positively stops the guide-stem short of the bottom of the stud-shank, substantially'as described.

ALBERT LATHAM. Witnesses:

E. M. TOWER, ALLEN WEBsrEn.

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