US329549A - gould - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

J. C. GOULD.

GRIPPING DEVICE POB. NAIL PLATE EEEDERS.

No. 329,549. Patented Nov. L3, 1885.

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(No Model.) 2 Sheets-Sheet 2. J. C. GOULD.

A GRIPPING DEVICE FOB. NAIL PLATE FEEDERS. N0. 329,549.

Patented Nov. 3, 1885.

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JOHN O. GOULD, OF CHICAGO, ILLINOIS.

GRIPPING DEVICE FOR NAIL-PLATE FEEDERS.

SPECIFICATION forming part of Letters Patent No. 329,549, dated November 3, 1885.

Application filed March 52B, 1885.

To all whom, it may concern:

Be it known that I, JoHN C. GoULD, a citizen of the United States, residing in Chicago, in the county of Cook and State oi' Illinois, have invented a new and useful Improvement in Gripping Devices for Nail-Plate Feeders, of which the following is a specification.

This invention concerns the construction of the gripping devices of nail-plate feeders.

The main feature of the invention relates to the construction of that part of the grippers which seize the nail-plate rod. In all the forms of grippers now in use the extent of surfacecontact between the rod and grippers is very limited, and as a consequence thereof either the nail-plate rod is worn out rapidly or grooves are worn in the gripping-jaws, necessitating frequent renewals of the grippingsurface, or, if that surface is not separate and detachable from the gri ppers, the renewal or replacement of the grippers. In my present invention I make the gripping jaws or pieces separate from the levers by which they are carried, usually called the grippers,7 and form said jaws in concave shape corresponding to the exterior of the rod, and of considerable lengthsay two and a halt' or three inchesand these jaws are mounted upon horizontal pivots, so that as the grippers oscillate back and forth the jaws will swing to accommodate the changes in the relative angle of the grippers-and rod without deflecting the rod and without causing wear between the surfaces and the rod. This and the other features of 'my invention are set forth more fully below, and are illustrated in the accompanying drawings, wherein- Figurelis a side elevation of my improved grippers. Fig. 2 is an end view. Fig. 3 is a cross-section upon line 3 8 of Fig. l. Fig. 4 is a longitudinal section upon line 4. 4 0f Fig. 2. Fig. 5 shows the intermediate piece detached. Fig. 6 is a horizontal section on line 6 6 of Fig. 4. Fig. 7 shows the yoke detached. Figs. 8 and 9 show the interior sides of the two grippers, and Fig. l0 is ahorizontal section on line 10 l() of Figs. 3 and 4.

In said drawings, A. represents the supporting-bracket; B, the nail-plate rod; O O, the grippers; D, the stop or push rod; D', the setscrew for regulating the throw caused by the Serial No. 160,432. (No model.)

stop-rod, and DIl the spring secured tothe rod and the intermediate piece, vE. c is the pivot upon which the grippers are swung by the push-rod, and said pivot is supported by setserews a, passing through the ends of the fork or yoke I-I, and the gripper O is made rigid upon said pivot by the set-screw c. The yoke H carries an F-shaped projection, it, and by means of said projection and set-screw h', in connection with the arm G upon the gripper O, the throw of the grippers is further regulated. Theintermediate piece,E,encircles the pivot c loosely, and is formed in the manner illustrated in the drawings. It iinds support upon the bolt F, whereby the spread ofthe grippers is limited. Such bolt is provided with a globular head, f, and the opening occupied by said bolt in gripper O' is enlarged, said globular head and enlarged opening being to give the necessary freedom to said gripper. The recess c in the intermediate piece, designed to receive the stop-rod, I now place above the recess e, occupied by the antifriction roller c2, instead of in front of the latter recess, as shown in some former feeders constructed by me. This is a` more convenient and cheaper method of construction. The anti-friction roller e2 acts upon the angling surface s of the gripper O in the usual inanner whenever the plaie-rod is to be seized, and the bearings and cavity wherein said roller is inserted are completely formed in the casting of the piece E; and when formed in the manner shown the roller will be completely held therein by the proximity of gripper O, so that it needs no other securing. The pin e", to which the spring Dz is secured, is made horizontal instead of vertical, as heretofore, for convenience of manufacture. The yoke H, I iind, can be more conveniently adjustably secured to the supporting-bracket by the construction shown in this application than in the manner shown in the application filed by me January 27, 1885, Serial No. 154,091- that is to say, by providing the bracket with an under horizontally-projecting lip, m, upon which the yoke will rest, and securing the parts together by a vertical bolt, m', and washer mi. To permit the adjustment, the opening in the lip m through which the bolt passes is laterally enlarged, as indicated by broken IOC and do not themselves wear away under the friction of the rod. In order that they may maintain the direction of the rod in all positions of the grippers, they are mounted upon horizontal pivots i, thereby allowing them to rock with out detlectin g the rodfrom its proper line. 'The spring O, by which the grippers are tween these gripping-jaws, as illustrated. It is thereby made to perform the additional function of preventing the jaws from clutching the rod when that is not desired. The -pivots t' are preferably tapering.

I have alluded to the construction of the intermediate piece, E. In further explanation it may be added that the socket e is in the front of said piece, While the recess e is upon the side thereof toward the gripper C, but in a lower plane than said socket e; also, that the pin ei* lies in front ofthe roller recess and under socket e. The lip m of the bracket A supports the yoke during the adjusting operation, and as the adjustments of the yoke are very minute it is important that it be thus upheld until the fastening-bolt can be tightened.

Figs. 1l to 14, inclusive, illustrate another feature of the feeder, designed to adapt it to use in different machines where varying inclinations are required for the plate-rod, the object being to render the gripping-jaws so adjustable that they may be changed to accommodate these various inclinations. To this end I provide the gripping-jaws I with downwardly-projecting forked ends Y, which forks lie with their limbs at either side of spread after each seizing operati on, I place behorizontally-adj ustable bolts J, secured inthe grippers C C. The spread of the forks serves to allow the necessary swing to the parts I, and the position of the bolt determines the inclination of those parts, as will be readilyv understood. The bolts I pass through horizontally-elongated slotsj in the gripper-arms,

and through nuts j upon the inner sides of the gripper-arms. When tightened, the bolts are stationary, and of course may be changed to any position allowed bythe limits of the slots j.

I claim-- l. In a nail-plate feeder, the combination,

,with the grippers, of the concave elongated pieces I, forming the jaws by whichl the nailplate rod is seized, substantially as specified.

2,. In a nail-plate feeder, the combination, with the grippers, of concave elongated jaws I, for seizing the nail-plate rod, said jaws being mounted upon horizontal pivots, substantially as specified.

3. In a nail-plate feeder, the combination,

with grippers and the concave jaws I, of the spreadingspring O, located between said jaws, substantially as specified.

4. The intermediate piece, E, having recesses for the stop-rod and the roller,and the pin e3, relatively arranged in the mannershown.

5. The yoke H and the parts supported therein, in combination with the bracket A, having the horizontally-projecting lip m, and the securing-bolt passing into the yokethrough an elongated slot in the lip, substantially as specified.

6. The gripping-surface pieces I, having depending forks 1, in combination with the adjusting-bolts J, substantially as specified.

' JOHN C. GOULD.

Vitnesses:

H. M. MUNDAY, QHAs. J.' BAUR.

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