US746766A

US746766A - Automatic machine for finishing horseshoe-nails.

Info

Publication number: US746766A
Application number: US16360703A
Authority: US
Inventors: Lloyd Weaver
Original assignee: FOWLER NAIL CO
Current assignee: FOWLER NAIL Co
Priority date: 1903-06-29
Filing date: 1903-06-29
Publication date: 1903-12-15
Anticipated expiration: 1920-12-15

Description

No. 746,766. v PATENTED DEC. 15, 1903. L. WEAVER.

AUTOMATIC MACHINE FOE FINISHING HGRSESHOE NAILS;

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UNITED STATES Patented Ileceinber 15, 1903.

PATENT OFFICE.

LLOYD WEAVER, SEYMOUR, CONNECTICUT, ASSIGNOR TO THE FOWLER NAIL 00., OF SEYMOUR, CONNECTICUT, A CORPORATION.

AUTOMATIC MACHINE FOR FINISHING HORSESHOE-NAILS.

SPECIFICATION forming part of Letters Patent No. 746,766, dated December 15, 1903. Application filed June 29, 1903. Serial No. 163,607. (No model.)

ful Improvement in Automatic Machines for Finishing Horseshoe-Nails; and Ido hereby declare the following, when taken in connection with the accompanyingdrawings and the.

characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a partial plan view of a machine constructed in accordance with my invention; Fig. 1, a broken detail view, in side elevation, showing the slide employed to operate the pointing device, the means for operating the slide, and the utilization of the slide to operate the pawl that moves the nail-blankcarrying ring step by step; Fig. 2, abroken side view of the machine; Fig. 3, an enlarged broken view showing those portions of the nail-blank-carrying dial and the nail-blankcarrying ring where the transference of the headed blanks from the former to the latter takes place; Fig. 4, a broken view, in vertical section, on the line a b of Fig. 3.

My invention relates to an improvement inmachines for finishing horseshoe-nails, and more particularly to devices for automatically shifting in position and transferring the headed blanks from the heading instrumentalities of the machine to the pointing instrumentalities of the machine, whereby the hand ling of the nails after being headed and before being pointed is avoided and a great economy of time and labor is secured.

With these ends in view my invention consists in an automatic machine for heading and pointing nails having certain details of construction and combinations of parts as will be hereinafter described,and pointed out in the claims.

In carrying out my invention difierent heading and pointing instrumentalities may be employed, as my improved automatic transferring device will operate independently of the particular character of' such instrumentalities. It is not necessary, therefore, to the disclosure of my present invention for me to show or describe in any great detail the heading or pointing instrnmentalities, which I shall refer to only so far as necessary to the understanding of my particular improvement. I

As herein shown, I employ a horizontallyarranged nail-blank-carrying dial 2, formed with a series of pockets 3, extending horizontally inward from its edge and intersecting its upper and lower faces, so as to be open at the top and bottom. The unheaded blanks a' are placed in these pockets by hand, with their head ends outward. The dial is actuated in step-by-step movement by means of a very long pawl 4, which, as shown by Fig. 3, drops into the pockets 3, which take the place of a rack. The'said pawl is operated by an eccentric-strap 6, encircling an eccentric 7, located on a driving-shaft 8, furnished with a powerpulley 9. As the dial 2 is moved step by step the unheaded nail-blanks in its pocket 3 are successively brought under a heading-die l0,

mounted in a slide 11, working up and down in an upright 12 of the machine-frame. This slide is connected by a swinging frame 13 with theshort arm of a lever 14:, the long arm of-which is operated upon by a cam 15 on the shaft 8 aforesaid. When the blanks are placed in the pockets 3 of the dial 2, they are prevented from dropping through the same by a large circular plate 16, over which they ride as the dial revolves. This plate 16 has an annular flange 17, and the distance between the inner face-of this flange and the inner ends of the pockets 3 is just enough greater than the length of a nail-blank to permit the blanks to travel without binding and yet be prevented from undue lengthwise movement. In order to accomplish this result, the flange 17 is difierentiated in thickness, as shown in Fig. 1, which represents that half of the flange which confines the nailblanks after they have been headed as wider than that portion of the flange which confines the blanks prior to their being headed to the extent of the difference in the length of the blanks before and after heading. In other words, one half of this flange'is wider than the other half to take into account the change in the length of the blanks before and after heading.

The parts thus far described are the nailheading instrumentalities of my improved machine.

The said dial 2 is placed with its edge in such relation to the horizontally-arranged nail-blank-carrying ring 18 of the nail-pointing instrumentalities now to be described that the nail-heads I) now formed upon the blanks are carried over the flat upper face of an annular flange 19, formed upon the lower edge of the outer face of the said ring 18 and provided with a continuous series of vertically-arranged nail-headreceiving notches 20, spaced conformably with the pockets 3 in the dial 2. The said ringis formed upon its upper edge with ratchet-teeth 21, through which it is actuated in step-by-step rotation by a pawl 22, hung on a horizontal stud 22, mounted in the upper end of an arm 22, the lower end of which is rigidly secured to a rock-shaft 23, furnished with an arm 24, carrying a roller 25, which engages with a cam-surface 26, located upon one corner of a slide 27, carrying a pointing-die 28, the felly 29 of which is secured to the frame of the machine. Four angle-shaped bearings 18% mounted upon posts 18", rise from the bed of the machine, as shown in 'Figs. land 4, the ring riding on these bearmgs. v

The dial 2 and ring 18 are timed so that every time the dial is moved a step it brings the head of a headed nail-blank directly over one of the vertical notches 20 in the flange 19 of the ring and the body of the same blank directly over a radially-arranged clearanceopening 30 in the plate 16 and annular plate 40. Directly after a nail blank has been brought into the described position a small transferring-plunger 31, forming a member of my improved automatic transferring device, descends and strikes the upper face of the nail-head, near the neck thereof, and just outside of the upper outer corner 32 of the flange 19. As the plunger descends the headed blank turns upon this corner as upon a pivot, swerves downward, and finally takes an upright position, in which it is suspended by the flaring sides of its head in the said notch 20. In order to prevent the nail-blank from dropping through the clearance-opening 30 in the plate 16, I employ a yielding nail-support 33, consisting of a long finger mounted upon one end of a short rock-shaft 34, journaled in a bracket 35 and furnished with a light coiled spring 36, which normally holds the finger 33 up in position to prevent the nails from dropping through the plate 16 as they are successively brought over the opening 30; but the spring 36 is so weak that when the blank is struck by the transferring-plunger 13 the finger 33 is swung down out of the way against the tension of the spring, which, however, immediately returns the finger to its supporting position after the end of the nail is disengaged from its end, the finger being prevented from rising too high by its engagement with the lower face of the plate 16. The said plunger 31 is adjustably mounted in the outer end of a long arm 37, rigidly supported in the slide 11, so that every time the slide 11 descends with the die 10 for heading a blank the plunger 31 will descend for transferring a headed blank from the dial to the ring. The headed blank having been so transferred is carried by the ring to the point ing-dies 28 and 29, by which it is pointed and finished as a nail. The nails are removed from the ring by means of a beveled stripping-finger 38, which crowds them out of the notches and causes them to drop by gravity through an opening 39 in an annular plate 40, arranged concentrically with and below the ring 18 and supported upon posts 41, rising from thebed of the machine. As herein shown,,I have provided for the reciprocation of the slide 27 by furnishing it with two depending lugs 42, which are acted upon by an eccentric 43, located between them and mounted upon a long shaft 44, supported in brackets 45 and furnished at its opposite end, Fig. 2, with a beveled pinion 46, meshing into a corresponding pinion 47, mounted on a short shaft 48, also carrying a spur-gear 49, meashing into a larger spur-gear 50, mounted upon a stud 51 and in turn meshing into a smaller spur-gear 52, mounted on the main shaft 8.

Heretofore it has been customary to head and point nail-blanks in separate machines, rendering it necessary to take the nails headed in the heading-machine and feed them manually into the pointing-machine. .My improved automatic transferring device unites, as it were, the two machines and converts them into a single automatic heading and pointing machine and saves the time and labor hitherto expended in handling and feeding the headed blanks.

It is apparent that in carrying out my invention I may modify the particular character of the heading and pointing device herein shown and described, as my improved automatic transferring device does notdepend upon its operation for any particular heading and pointing instrumentalities. Furthermore, it is obvious that my automatic transferring device may take other forms than that shown. I would therefore have it understood that I do notlimit myself to the construction shown and described, but hold myself at liberty to make such departures therefrom as fairly'fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine for headingand pointing nails, the combination with heading instrumentalities including a horizontally-arranged dial having horizontal nail-blank-receiving pockets; of pointing instrumentalities including a ring having vertical nail-blank-receiving notches and set edge to edge with the ing its upper and lower faces and a plate over said dial so that nail-blanks carried thereby will have their heads bro light into registration with its notches; and an automatic transferring device located at the conjunction of the dial and ring and arranged to engage with the nail-blanks as they are successively presented to the notches in the ring and deflect them from horizontal to vertical positions in which latter they are supported by the ring.

2. In a machine for heading and pointing nails, the combination with heading instrumentalities-includinga dial having horizontal nail-blank-receiving pockets; of pointing instrumentalities including a ring set edge to edge with the dial and having vertically-arranged nail-blank-receiving notches formed in its edge; and an automatic transferring device located at the conjunction of the dial and ring and comprising a plunger arranged to strike the upper faces of the heads of the i headed blanks,whereby the same are swerved from horizontal to vertical positions in which latter they are supported by their heads in the notches of the ring.

3. In a machine for heading and pointing nails, the combination with heading devices including a horizontally-arranged dial constructed and adapted to be moved step by step and having nail-hlank-receiving pockets extending horizontally inward and intersectwhich the said dial is moved step by step and which is furnished with a clearance-open ing with which the blanks are successively brought into registration by the said step-bystep movement of the dial; of pointing instrnmentalities including a ring setedge to, edge with the dial and havinga flange formed with vertically-arranged nail-blank-receiving notches; an automatic transferring device for engaging with the headed blanks when the same are registered with the said opening and the notches in the ring and swerving them from horizontal to vertical positions in which latter they are supported by the ring, and a yielding nail-support located below the said clearance-opening in the plate.

4. In a machine for heading and pointing nails, the combination with heading instrumentalities including a dial constructed and adapted to be moved step by step and having nail-blank-receiving pockets and a plate located below the said dial and having a clearance-opening over which the said pockets are successively brought; of pointing instrumentali'ties including a ring set edge to edge with the said dial and havinga flange formed with vertically arranged nail blank r receiving notches; and an automatic transferring device comprising a' plunger located directly above the conjunction of the dial and ring in position to engage with the blanks and swerve the same from horizontal positions with respect to the dial to vertical positions in which latter they are supported in the slots of the ring on the corner of the said flange of which theyare turned as upon a pivot, and a yielding nail-support located below the clearanceopening of the plate for temporarily supporting the nails in horizontal positions preparatory to their transference.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

LLOYD WEAVER,

Witnesses:

FREDERIC C. EARLE, CLARA L. WEED.