US296073A - Bolt-heading machine - Google Patents

Description

(No Model.) ilSheets-Sheet 1;

0.8. SEATON. BOLT HEADINGV MACHINE.

No. 296,073.. Patented Apr.- 1,1884.

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0.. s. SEATON.

BOLT HEADING MACHINE.

No. 296.073.. Patented Apr. 1; 1884.

I Jc i/ I fjnvmmn l n PETERS. Plwlo 'mhogmphur. Wasllin (No Model.) 3 Sheets-Sheet 3.

C. S. SEATO'N. BOLT HEADING MACHINE.

No. 296,073. I PatentedApr. 1,1884.

flaw/QM INVBNTOR UNITED STATES PATENT OFFICE.

CHARLES. S. SEATON, OF CLEVELAND, OHIO.

. BOLT-HEADING MACHINE.

SPECIFICATION forming part of, Letters Patent No. 296,073. dated April 1, 1884.

i Application filed March 14,1883. (No model.)

.Z'o aZZ whom it may concern:

ful Improvements in Bolt or Rivet Heading .Machin'es; andl do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit pertains to make and use the same. 7

My invention relates to improvements in rivet-machines; and it consists of certain features of construction and in combinations of parts, as will be hereinafter described, and pointed out in the'claims.

In the drawings, Figure 1 is a view in perspective of a single rivet-machine. Fig. 2 is a plan view of a double rivet-machine. Fig. 3 is an enlarged vertical sectional view of a portion of Fig. 2 on the line of w w. Figs. 4, 5, 6, and 7 are enlarged detailed drawings, which will be more fully hereinafter described.

A represents the frame of the machine. B is the driving-shaft, which is provided at the central part with a crank, and is journaled on each side of the crankin boxes attached to the frame, and has attached at one end the driving-pulley, and at the other end a mitergear, by means of which are driven the shafts C. The wrist of the said crank is. provided with the box b, that slides vertically in the cross-head D, andby means of which reciprocating motion is given to the cross-head and the attached heading-dies d.

In the double-acting machine, Fig. 2, it will be seen that one end of the machine is a du' plicate of the other end, and that when a single-acting machine, Fig. 1, shall have been hereinafter described the description will be equally applicable to either end of the doubleacting machine. The machine is provided with the dies E and E, the latter remaining stationary, while the former, in combination with and supported by the slide 0, (see Fig. 4,) reciprocates horizontally, and is operated from the shaft 0 by means of the cam c, actuating the lever F, that in turn operates thetogglejoint f. The said lever F is fulcrumed 011 the shaft G, andis provided with the break-pinf. The shaft 0 is also provided with the cam c, that actuates the arm 9, that is firmly attached to the shaft G. The cam c, by means of the said lever and toggle-joint aforesaid, moves forward the die E, causing it first to sever the iron for the rivet, and then closing the die E against the die E, thereby grasping the sev-. ered iron with great power, in which position the iron is held, while the headingdie d delivers its stroke on the blank and completes the work. By means of the cam c and the arm gthe reverse motion of the toggle-joint is made; or, in other words, the toggle-joint is opened, and at the same time the die E-and its casing e are drawn back by the spring 6. When the dies open, the rivets or bolts will not always fall out of the dies by their own gravity, but will sometimes adhere to one or the other die. To obviate this difficulty we have the lever H operated by a cam on the fiangec and provided with the elongated head or pin h, the said lever and attachments operating like a small tilt-hammer to deliver a quick, light blow on the end of the rivet, to loosen it from the dies. This blow is delivered just as the dies commence to open, and the head h does not come in. con tact with the rivet or bolt except when the blow is given. Between the times of delivering the strokes, the said head h remains at some little distance from the end of the blank, as shownin Fig. 7. As the dies continue to open, the rivet, having thus been loosened from the dies, will fall by its own gravity, as aforesaid. This head h may be made quite small as compared with the size of the rivet or bolt e. 9., in a machine that will make rivets of different sizes, from one-half inch to one and onehalf inch, in diameter. This head It need not be over one-quarter inch in diameter, and this one size of hammer-head will operate on all the different sizes of rivets or bolts made on the machine.

The cutting-plate E is attached to the bar J, which in turn is attached to the frame of the machine. This plate is provided with a tapering hole, N, through which the hammerhead h operates, and this hole on the face side of the die is just large enough for the opera tion of said head h. There is therefore left around the said hole a sufficient seat to support the rivet or bolt during the heading process. The plate E is also provided'with another hole, 0, that is of suitable size to accommodate the size of the iron that is being made into rivets, and through which the said iron is fed into the machine. This hole is countersunk from the back side'of the die, leaving the hole on the front side of the die in such shape as to form, in combination with the reciprocating die E, shears for severing the iron; and in order to gage the iron to the required length, there is suspended in front of this hole, and between the said hole and the said heading-die d, and in such position-as to operate as a stop to the iron as it is thrust through the hole, as aforesaid, the adjustable lever K. This lever is pivoted in the central 7 part adjacently to the arm L, and is also adjusted by the set-screw, 7c, and held in position against this set-screw by the coil-spring 2.

Attached to the crosshead and by the side of the heading-die d is a small incline, d that, when moved forward, engages the foot of the arm Z, that is a branch of the arm L, and causes the said arm L and the attached lever K to be raised out of the way just as the said headingdie d moves forward to deliver its stroke. It will be seen that while the arm L is being raised the top of the lever K will be held against the set-screw is, so that the lower end of the lever will recede from rather than press against the end of the blank, and as the blanks are hot and easily bent it will be seen that this is an important part of the device.

In operating the die E it is found to be more convenient to have the thin part 6 that contains the cutter, detachable from the balance of the die.

I am aware that bolt-heading machines have been madein which a punch was used for forcing the bolt out of the die, which was a solid die, and that also in that class of machines the said punch was usually so arranged as to resist the thrust of the bolt vduring the heading process. My hammer device is in no sense a punch, and does not perform any of the functions of a punch, and does not come in contact with the bolt or rivet during the heading process, and does not punch, push, or thrust the bolt or rivet from the die. On the contrary, if my hammer device could be applied to the head end or to the side of a bolt or rivet, it would perform the work required of it just as well-to wit, it would jar the bolt or rivet loose, so that it would fall from the die by its own gravity.

The terms bolt-heading machine and rivet-heading machine. are used inter- 'set forth.

2. In a machine for heading bolts or rivets, the combination, with the gage K, suspended between the heading-die and the graspingdies, the screw engaging the upper end thereof, and the supporting-arm provided with a downwardly-extending foot, of theflheadingdie having an inclined surface adapted to engage the foot as it advances toward the blank, and to raise the said arm and gage, substantially as set forth.

3. In a bolt or rivet heading machine, the combination of the arm L and the lever K with the spring i and the set-screw k, causing the lower end of the said lever to recede from the blank as itrises, substantially as described, and for the purpose specified.

4. In a bolt or rivet heading machine, the combination, with the die E and the slide 6, of the toggle-joint lever and cam operating the same, and the cam c and the arm 9, substantially as and for the purposeset forth.

5. In a machine for heading bolts or rivets, the combination, with the dies E and E, the suspended gage and its supporting-lever, having a foot extending therefrom, a heading-die having an inclined surface, and the bar J, having the cutting-plate secured thereto, and provided with a bolt and hammer-pin openings, of the pivoted lever having a pin extending therefrom, and the rotating flange having an inclined lug, substantially as describcd,whereby the bolt or rivet is dislodged from the die, substantially as described.

In testimony whereof I sign this specification, in the presence of two witnesses, this 24th day of February, 1883.

CHARLES S. SEATON.

Witnesses:

O. H. DQRER, A. E. LYNCH.

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