US420492A

US420492A - Nail-plate feeder

Info

Publication number: US420492A
Authority: US
Publication date: 1890-02-04
Anticipated expiration: 1907-02-04

Description

J. M. EDSON.

NAIL PLATE FEEDER.

2 Sheets-Sheet 1.

(No Model.)

Patented Feb. 4

No. 420,492.v

(No Mode.) 2 Sheets-Sheet 2. J. M. EDSON.

NAIL PLATE FEEDER.

No. 420,492. Patented Feb. 4, 1890.

wA Pneus, Hammam-.pm wnsmngm n c chines for operating the grippers in throwing f falls and rises, any springing or twisting ac- UNTTED` STATES PATENT @Erroreo JOHN M. EDSON, OF TOWANDA, PENNSYLVANIA.

NAIL-PLATE FEEDER.

SPECIFICATION forming part of Letters Patent No. 420,492, dated February 4, 1890.

Application filed June 25, 1889. Serial No. 315,492. (No model.)

T0 all whom it may concern:

Be itknown that I, JOHN M. EDSON, a citizen of the United States, residing at Towanda, in the county of Bradford and State of Pennsylvania, have invented certain new and useful Improvements in Nail-Plate Feeders; and I do declare the following to be a full, clear, and exact description of the invention, suoli as will enable others skilled in the art to which it appertai'ns to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this speciiication.

This invention relates to that class of devices which are attached to nail-making machines and act as a part thereof to intermittently seize upon the nipper-rod carrying the nail-plate and feed it to the machine.

The principal object of my invention is to dispense with much complicated mechanism usually employed in nail-plate-feeding maforward the nipper-rod, and this I accomplish by the arrangement of mechanism hereinafter described, whereby the grippers are operated directly from the heading-lever and by the same power that actuates said lever, and whereby the nail plate or blank is fed forward to the cutting-knife by the end of the shove-up rod striking the bed of the mach-ine.

Another object of lny invention is to overcome the difficulty existing inthe automatic nail-plate feeders with which I am acquainted, whereby when the plate is cut to form the nail, the grippers still holding the nipper-r od, the movement of the cutting-knife often brings the side of the knife against the edge of the plate, or one portion of the edge, before the plate is turned, thus springing the forks holding the plate and giving the plate slight twist, resulting in giving the side of the next nail cut an imperfect shape, and thus spoiling it. I overcome this difficulty by the arrangement of mechanism hereinafter described, whereby at the moment before cutting the nail-blank the grippers release the nipper-rod, and, the rod and blank being free from the grippers while the knife on of the forks by the action of the knife upon the blank at the time of cutting` is prevented.

Another object is to provide a more convenient nipper-rod stop than those generally in use, and, finally, by my arrangement to lessen the number of parts heretofore employed in nail-plate feeders to accomplish the same results, and to thereby simplify the machine and to lessen the cost of manufacture.

My improvements are illustrated in the accompanying drawings, in which- Figure 1 is a perspective side view of my improvements; Fig. 2,an end view; and Figs. 3, 4, 5, 6, 7, 8, 9, 10, ll, and l2, details.

My improvements are designed to be attached to any well-known automatic nailplate-cutting machine, and any convenient power is applied through intermediate shafting, so that such shafting and its connections with the machine are not here shown or particularly described.

Referring to the drawings, A is a rod receiving an intermittent reciprocating movement from a shaft and eccentric. (Not shown.)

`Itis connected and imparts its motion to an arm A', provided with a jointed head A2, connecting with a vertical standard B.

C is a barrel connected to a barrel-rest C', pivoted within a yoke extending rigidly from the bed of the machine in the usual manner.

E is a half-circular rack behind barrel-rest C to engage with a cog (not shown) extending from the barrel through a slot therein, for turning the barrel.

Dis the feed-rest, rigidly secured at one end to the vertical standard B and at the opposite. end pivoted to and carrying the grippers and gripper attachments. At this end the rest D is forked, and the forked arms d d are secured to the gripper-head by means of screw-bolts Q. The arms d are internally screw-threaded to engage the bolts Q, and the ends of these bolts are smooth and conicalshaped and engage with correspondinglyshaped recesses k formed in each end of a pin K, connecting the grippers O P. The gripper O is rigid and has cast 'in one piece therewith the lugs P and the pin K. The gripper P is pivoted at its center to the lugs P by a pin p, and is provided near its lower end with a slot p2, by which it is enabled to swing freely to and from gripper O on pin p.

L is a iiipperrod passing at one end through the barrel C and provided with the usual nipper jaws or forks and passing at the other end between the grippers O and P and resting on a yoke G. This yoke is connected to a rod II, supported in a standard l. The rod and standard are screwtlireaded, and nutst' and h are employed to regulate the setting of rod H, and also the yoke G to properly hold the iiippei'iod L. The yoke G passes through a slot g in the rod H, and its position is regulated by the nut h, so as to vary the set of the yoke to conform to the inequalities of nipper-rods, (which being of wood are sometimes more or less warped,) and to thus hold the rod in line through the barrel.

F is a rod that is commonly designated as the shove-up rod. It extends from the grip per O to or near the bed Z of the machine, passing loosely through an aperture in barreliest standard C', that supports the said rod F, which is provided with a lever-arm V, and near the opposite end with a cam R, secured thereto by a set-screw 7', while the end of thc rod passes into a recess in the gripper O. At that end the rod F is provided with a conically-shaped recess lo. A headed screw-bolt f is provided with a set-nut o, and the inner end of said bolt is conical to lit into the recess 7c. The purpose of screwf is to regulate the distance of the reciprocating motion of the nipper-iod. The lever-arm V on the shove-up rod F is adapted to hang over the lieading-lever T and receive strokes from the arm X, which is attached to the said headinglever by a bolt and claspt and adapted to strike lever-arm V when the heading-lever vibiates, and thus rotate the said shove-up rod, for the purpose hereinafter described. The cam R, near the other end of the shove-up rod F, is adapted to engage with the lug P2 on lower end of gripper P.

XV is a coiled spring attached at one end to a projecting lower end O of gripper O and at the other end to a pendent rod iv, connected to the shove-up rod F, the purpose of which arrangement is to bring the shove-up iod back to its normal position, so as to open the jaws of the grippers after the rod F has been rotated to close them.

In an automatic nail-feeder it is necessary to .provide the nipper-rod with a stop, whereby the grippers are prevented from forcing the rod forward under the cutting knife when the nail-plate has been cut up to the forks of the said Dipper-rod. For this Iprovide the nipper-rod stop J, which consists of a cylinder slotted its whole length loiigitudinally. It has a iiange on one end and its outer surface is screw-tlireaded. It tapers from the ange to its opposite end, and is provided with a band j, screw-threaded on its inner surface, adapted to screw on the tapering surface of the cylinder and lessen its diameter by compressing it and closing or partially closing the slot. The cylinder J is slipped on the outer end of the nipper-rod L and firmly secured to it at the proper place, so as to strike the support G and stop the forward movement of the said nipper rod when the nail-plate is snfiiciently cut up. The cylinder J is secured to the iiipper-rod L by screwing the ringyl along the tapering surface of said cylinder, thereby lessening its diameter as the slot j closes. I provide the ringj with a milled oi' rough and i'aiscdouter sui'face around the middle part, so that it can be seized by the grasp of the operator and easily screwed or unscrewed. I

There are two motions essentially required in an automatic nail-plate feeder-one to cause the jaws of the grippers to close upon and grip the nipper-rod and then open and loosen it intermittently, the other motion to shove up the nipper-rod which carries the nail-plate under the eutting-kiiife at regular intervals and set distances, varying according to the size of nail being cut. Both of these motions I accomplish in a novel manner by providing the shove-up rod with the cam R and lever V, extending the rod to very near the bed of the nail-machine, and by rigidly attaching an arin to the center of the heading-lever adapted t-o extend to and strike the lever V.

My nail-plate feeder is operated as follows: Vhcn power is applied to the eccentric-rod A and the heading-lever T, through their connections with a inain revolving shaft, the feed-rest D is forced forward and back and the heading-lever is vibrated on its center or axis at right angles to the motion of the feedrest. The nail-machine being at rest with the iiipper-rod in place, and the feed-rest back or outward, and the grippers open, power is applied, when the feed-rest is drawn forward or inward and the heading-lever is vibrated. The moment the heading-lever vibrates, the bar X strikes the lever V, causing the shove-up rod F to rotate the cam R, which, pressing against the lower end P2 of loose gripper P, turns it on its pivot p, and the nipper-rod L is thus seized within the jaws of the grippers O and P. The moment after the heading-lever vibrates, the feed-rest is drawn forward or inward by the eccentricrod A, causing the inner end of tlie shove-up rod F to strike they bed Z of the iiail-machine and its outer end to force the lower end of the gripper O outward, and thereby the upper ends of both grippers O and P inward, thus shovinor the nipper-rod forward and carrying the nail-plate under the cutting-knife.

What l claim is- 1. In a nail-plate feeder, in combination with a nail-machine, a shove-up rod provided with an arm or level' near its inner end adapted to receive strokes from a lug rigidly secured to the heading-lever, whereby the shove-up IOD IIO

IZO

rod is rotated back and forth by the direct action of the heading-lever, substantially as described.

2. In combination with a nail-machine and the grippers of a nail-plate feeder, a shove-up rod actuated by the motion of the headinglever and provided with a cam near its outer end adapted to engage a lug extending from the lower end of the loose gripper, whereby the grippers are operated to grip the nipperrod by the Vibrations of the heading-lever, substantially as described.

3. The combination of the heading-lever provided with an arm, such as X, rigidly attached to its center, with a shove-up rod provided with a lever, such as V, whereby when the heading-lever is vibrated its said arm will strike the lever of the shove-up rod, as and for the purpose described.

4. In a nail-plate feeder, in combination with the actuating mechanism, an eccentricshaft, barrel, barrel-rest, nipper-rod, feed-rest, and grippers, said feed-rest provided with a standard, an adjustable rod mounted on said standard, and an adjustable yoke secured to said rod to support the nipper-rod when the grasp of the grippers on the nipper-rod is released, and means to adjust the yoke up and down on said rod, substantially as described.

5. In 'a nail-plate feeder, a feed-rest provided with the standard I, in combination with the adjustable rod H and the supporting adjustable yoke G, substantially as and for the purpose described.

(5. In combination with the shove-up rod provided with the lever-arm V and with the cam R, the rigid gripper O, said cam being located on the sideof said gripper, and the loose gripper P, the said gripper P pivoted centrally to the gripper O and provided at its lower end with an extension P2, with which said cam on the shove-up rod engages, substantially as and for the purpose described.

7 YIn a nail-plate feeder, the rigid gripper O, having cast integral therewith the lugs P and the pin K, in combination Wit-h the gripper P, pivoted to said lugs and provided with a slot to engage with said pin, substantially as described.

8. In combination with a nail-plate feeder, a nipper-rod stop consisting of a cylinder slit longitudinally and having a flange on one end and its outer surface tapering and screwthreaded from the said ilange to its opposite end and provided with a ring screw-threaded on its inner surface adapted to screw on said cylinder and thereby diminish its diameter, for the purpose substantially as set forth.

9. In combination with the nipper-rod and the feed-rest provided with the supportingyoke G, the slotted-rod stop J, provided with the band j, whereby the forward movement of the nipper-rod is controlled, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

' JOHN M. EDSON.

IVitnesses:

SAMUEL W. BUCK, JOHN G. CULvER.