US1024666A - Spike-machine. - Google Patents

Description

G. BARR.

v SPIKE MACHINE.

APPLICATION FILED IEB.8, 1907. 1,024,666. Patented Apr. 30, 1912.

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Patented Apr. 30, 1912.

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G. BARR.

SPIKE MACHINE.

APPLICATION rum) P113. 9, 1907.

I 1 l I r r COLUMBIA PLANuuuAPn 130., wAsmNn'rON. D. c.

UNITED STATES PATENT OFFICE.

GEORGE BARR, OF PITTSBURGH, PENNSYLVANIA.

SPIKE-MACHINE. A

To all whom it may concern:

Be it known that I, GEORGE BARR, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Spike- Machines, of which the following is a clear, full, and exact description.

My invention relates to spike machines, and its objects are, first, to automatically gage the length of the spike-blank by means that intercept the advancing billet from which said blank is made; second, to withdraw said means in such manner that the position of the blank will not be disturbed as the blank-gripping or holding devices advance to their work; third, to provide novel heading mechanism which has a headingdie removably and adjustably secured therein and has a slight downward as well as forward movement While heading the spike, and fourth, to provide suitable ejecting mechanism, substantially as hereinafter fully described and as particularly pointed out in the claims.

In the drawings :Figure 1 is a plan view of my invention. Fig. 2 is a transverse vertical section taken on dotted line 2, 2, Fig. 1. Fig. 3 is a detail view showing the spikeblank gaging mechanism and elements cooperating therewith, in perspective.

Referring to the drawings, A represents two intermittently revolving disks that are adapted to carry a set of dies (not shown), and each having a circumferential flange projecting from one edge thereof that laps past the edge of the other. The metal billet is fed to the machine between these disks and is cut into suitable lengths in such manner that the rear end of each spike-blank, so made, is sharpened. The spike-blank, as it is moved forward by disks A, A, is caught by, and moved forward onto the fiat top of an anvil or die B, by feed rollers a, a. Then the proper devices (not shown) cut the spike-blank they .cease revolving, but the feed-rollers continue to revolve and move the blank forward until the advanced end thereof overhangs the opposite edge of the anvil, and until it comes in contact with a stop-gage O, whereupon the set 72, extending vertically downward from the adjacent end of the gripping-lever D, is made to bear upon the spike-blank and hold it rigidly in Specification of Letters Patent.

Application filed February 8, 1907.

Patented Apr. 30, 1912.

Serial No. 356,418.

position while the spikeblank is being headed. Upon the withdrawal of the heading-device a vertically reciprocable ejector E, consisting of a rod of suitable diameter whose upper end extends through a vertical opening in the anvil, moves upward and lifts the finished spike from the anvil, and then, laterally reciprocable horizontal pushbars F, F, located so as to impinge against the finished spike near its rear pointed end and near its head, push the spike laterally off the anvil.

The cutting disks A, A, the feed rollers a, a, the ejector-rod E, and the push-bars F, F, are all old, and fully shown and described in Letters Patent of the United States granted to me February 9, 1897 for spike machines, No. 57 6,536, and I do not wish to be understood as claiming any novelty in these features of the machine. The use of a gage-bar, and gripping-devices, and heading dies in a spike-machine are also old, as fully shown and described in the aforesaid Letters Patent, but the novelty of the invention herein resides in the improved construction and operation of these last mentioned features.

The disks A, A, are mounted upon parallel transverse shafts A, A, which are arranged one above the other and are journaled in suitable bearings secured to and arising from the bed 2 of the machine. At one end of the machine these shafts A, A, are connected by gearing 3, the uppermost one of which is engaged by a suitable pawl 4, pivotally connected to the adjacent end of a pitman 5, which latter has its opposite end connected to a crank-pin projecting from a disk 6 secured to the adjacent end of a drive-shaft 7. This drive-shaft 7 we tends transversely across the side of the machine opposite shafts A, and is journaled in bearings 8, 9, 10 and 11 secured to and arising from bed 2 of the machine. Between the bearings 8 and 9 a cam 12 is secured to the drive-shaft, which consists of a suitable cylindrical boss having a runway which is made by parallel flanges, that at asuitable point, are deflected laterally, substantially as shown in Fig. 1 of the drawings. A horizontally disposed lever 13, which is fulcrumed mediate its ends to a suitable support arising from the bed of the machine, has one end inserted and engaged by the runway of this cam 12, and the opposite end portion of said lever is bent downward.

Alongside of the cam 12, and between the same and bearing 9, another cam 1 1 is mounted on the drive-shaft, which consists of a cylindrical boss having a runway made by circumferential flanges, a portion of which given a lateral offset. The horizontal lever 15, which is fulcrumed to the same support that lever 13 is fulcrumed to, has its adjacent end enter and engage the runway of this cam l l, so that as the latter revolves said lever is given a slight reciprocable movement on its fulcrum of greater duration than that possessed by lever 13. The end portion of lever 15 farthest from cam 1st is deflected laterally over the downwardly bent portion. of lever 13, and is likewise bent downward, and has its extremity connected by means of a suitable pivotal pin or bolt to the transversely reciprocable horizontal gagebar C. The end of the gagebar farthest from the path of the spikeblank is guided in suitable guidebearings 1G, and the end portion thereof nearest the path of said blank is guided in guidebearings 17. The width of the guide-open in 's in these bearings is greater than the width of the gage-bar. and bearings 17, on the side facing the drive-shaft, is provided with a set-screw 18, by means of which the adjacent end portion of the gagebar may be adjusted nearer to or farther from the anvil, so as to exactly gage and determine the extent the spike-blank shall extend beyond the anvil. Near the opposite end of the gage bar it is provided with a lateral offset 1?), the end of which next the bearing 16 is beveled. The gage-bar is held in engagement with the end of the set-screw 18, and with the side of the opening of bearing 16 nearest the drive-shaft, by a coil spring 20, and the opening in the adjacent end of the lever 15 through which the pivotal pin passes. which connects the same to the bar C. is elongated in the direction of the length of said lever. As shown in Fig. 1 of the drawing gage-bar C is in position to stop the advance of the spike-blank. When it has done this, it is moved longitudinally by lever 15 out of the path of said spikeblank, and, as it is thus moved, offset 19, entering the guide-opening in bearing 16, gives said bar a slight rocking movement, which causes the bar to move, on the end of the set-screw 18 as a pivot, so that the opposite end thereof, in front of the blank, moves laterally and longitudinally away from th adjacent end thereof and thus avoids the possibility of disturbing its position before it is thoroughly clamped upon the anvil by the gripping devices.

The fulcrum of the gripping lever D consists of a heavy crank-shaft 21, the portion from which the two branches of the lever project corresponding to the wrist-pin and the arms at the ends of which extend clownward and have laterally projecting alining trunnions or journals, which are mounted in suitable bearings secured to and arising from the bed of the machine. The branch of the lever D, in which set Z) is secured, is of an inverted L-shape, and projects from crankshaft- 21 in the same vertical plane as the path. of the spike-blank. The other branch of said lever, however, projects from the end of the wrist-pin portion of the shaft farthest from levers 13 and 15, and extend upward and rearward over the drive-shaft, where its under surface is faced by a suitable shoe 22, which is engaged by a cam 23. Cam 23 consists simply of a disk secured eccentrically to the drive-shaft, and it provides just sufficient movement to enable the set Z) to engage and clamp the spike-blank, and to move out of the way when said blank is ejected. in order to hold levu' D in engagement with said cam 23, I connect the extremity of its rearward longer branch to the bed of the machine, by a coil-spring 24,

in any suitable manner.

The heading-die G is a suitable bar of steel having a concaved engaging end for forming the head of the spike. This die is secured in a groove in the inclined shoulder (Z supported by a bracket projecting forward from the vertically disposed frame H, the lower end of which latter is mounted 011 a transverse shaft 0, whose ends are journaled in blocks f, seated in longitudinally elongated openings in the lower ends of dropframes 34, depending from the underside of the bed of the machine. The die G is so located that its engaging end is opposite the end. of the spike-blank. when the latter is held upon the anvil, and the upper end of the frame H is pivotally connected to a link 25, which extends backward therefrom and is pivotally connected to the wrist pin connecting two circular plates constituting part of a crank on the drive-shaft, located between bearings 9 and 10. The action of the frame H and link 25 is such, that the heading-die G, when it engages the overhanging advanced end of the spikeblank will travel on a segment of a circle struck from the center of shaft 6, and has both a bending and upsetting action upon the end of the spike while heading the same, without exposing the blank to a direct longitudinal thrust, which not only subjects the heading mechanism to a great strain, buthas a tendency to spread the head on both sides of the spike, which it is the object of my invention to practically avoid doing.

In operation the gripping jaws clamp the stock after the latter has been sl eared the proper length by the cutting dies cooperating with the gage, and while thus engaged the heading lever moves forward against the end of the cut stock and heads the spike. The movement of this lever is in a true are struck from its pivotal point and at the moment of release the gripper is raised upward slightly and then rearwardly owing to the eccentric pivot of the lever on which the gripper is mounted, thereby permitting the jaws of the latter to escape the header as it moves away from the spike. The various parts forming the same, however, may be modified or changed in construction, so long as the operation thereof is substantially as hereinbefore described, without departing from the spirit of my invention.

What I claim as new is 1. In a spike-machine the combination with a drive-shaft, a rock-shaft, a grippingmember and sets mounted on said rock-shaft and bodily reciprocable to and from the work in an arc of a circle struck from the pivot of said rockshaft, of an unjointed headinglever integral throughout its length adapted to bodily rock to and from the work, said lever actuated direct from said drive-shaft-.

2. In a spike-machine the combination with a suitable frame, a drive-shaft, a rockshaft, an anvil, and a gripping member and sets mounted on said rock-shaft and bodily reciprocable to and from the anvil in an arc of a circle struck from the pivot of said rock shaft, of an unjointed heading lever integral throughout its length adapted to bodily rock to and from the work, said lever actuated direct from said drive-shaft.

3. In a spike-machine the combination with a drive-shaft, a rock-shaft, a grippingmember and sets mounted on said rock-shaft and bodily reciprocable to and from the work in an arc of a circle struck from the pivot of said rock-shaft, an unjoint-ed heading-lever integral throughout its length, and a pitman having one end connected to said header and its opposite end connected to said drive-shaft and adapted to bodily rock said header to and from the work.

4. A spike machine comprising means for feeding the spike blanks longitudinally into the machine, heading devices, a transverse horizontally disposed gage-bar reciprocable in a fixed plane which determines the extent of the initial movement of the blank before it is operated on by the heading devices, guide-bearings for said bar near each end thereof having guide-openings that are wider than said bar, means for keeping said bar normally against one side of said bearing, a set-screw in the bearing nearest the path of said spike-blank and having engagement with said gage-bar, and means for reciprocating said bar.

5. A spike machine comprising means for feeding the spike blanks longitudinally into the machine, heading devices, a gage-bar reciprocable in a fixed plane which determines the extent of the initial movement of the blank before it is operated on by the heading devices said gage-bar having a lateral offset near the end thereof farthest from said blank, guide-bearings for said gage-bar near each end thereof having guide-openings that are wider than said bar, means for keeping said bar normally against one side of said bearing, a set-screw tapped into said bearing nearest the path of the spike blank and having engagement with he bar, and means for reciprocating said I11 testimony whereof I have hereunto set my hand and seal this 29th day of January, 1907.

GEORGE BARR. [1 s.]

Witnesses:

WM. S. WEsTMAN, O. B. AYLEswoRTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents,

Washington, D. 0. i

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