US307987A - Machine for making and inserting umbrella-frame rivets - Google Patents

Description

2 Sheets Sheet 1.

(No Model.)

D. M. REDMOND. MAGHINE FOR MAKING AND INSERTING UMBRELLA PRAMBRIVETS. No. 307,987.

Patented Nov. 11, 1884.

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(No Modl.) 2 Sheets-Sheet 2.

D. M. REDMOND. MACHINE FOR MAKING AND INSBRTING UMBRELLA FRAME EIVETS.

No. 307,987. v Patented Nov. 11, 1884.

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DANIEL M. REDMOND, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR MAKING AND INSERTING UMBRELLA-FRAME RIVETS.

SPECIFICATION forming part of Letters Patent No. 307,987, dated November 11,1884.

I Application filed June 28, 1883. Renewed July 9, 1884. (N0 model.)

To all whom it may concern:

Be it known that I, DANIEL M. REDMOND, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and Improved Machine for Making and Inserting Umbrella-Frame Rivets, of which the following is a full, clear, and exact description.

The object of this invention is to provide a machine by which the rivets or pins used in hinging together the ribs and braces of umbrella-frames may be rapidly made, and at the same time inserted in the ribs and braces.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a front elevation of my invention. Fig. 2 is a sectional side elevation of the same, taken on theline x :v of Fig. 3. Fig. 3 is a sectional front elevation, taken on the line 3 y of Fig. 2. Fig. 4is aplan view of the feeding-clamp for the wire or rod from which the rivets or pins are cut; and Fig. 5 is a perspective view of one of the feed-regulating plates removed from the machine.

The main frame A of the machine is formed with the swan-neck a, and it is flanged, as shown at b b, so that the machine is adapted to be mounted upon a table; and the main frame A is recessed in front, as shown at B, Fig. 3, for inclosing the jaws C O and blocks D D, which are held in place in the recess B by the removable face-plate E.

F represents the riveting-hammer head. This is provided with the adjustable rivetingtool 0, and is held above the jaws O O in the race (I, made in the front face of the swan-neck a, and is reciprocated in said race from the eccentric shaft G above, to which shaft the head F is connected by the connecting-rod H. The connecting-rod H is, by preference, made in the form of a spring, as shown clearly in Fig. 2, so that the hammer-head F is adapted to deliver elastic blows, with the tool 0 upon the upper end of the wire f, from which the rivets are cut, and which is held between the jaws O O by the knives t t, fitted in the upper ends of the jaws O C, as shown in Fig. 3. The jaws O G are pivoted at e e on opposite sides of the block D, and are connected at their lower ends to the block D by the links 9 g. The blocks D D are made V-shaped on their edges, as shown at i i, and move in correspondingly-shaped guide-grooves made in the back of the recess B, and in the inner face of the removable plate E, and these blocks D D" have the central vertical passages, e 6, made through them in the line of the length of the blocks, and in these passages are placed the tubes a a, up through which the wire f passes, as shown in Fig. 3. The block D has attached to it the lever J, and the lever is centrally fulcrumed in the link K, and is attached at its rear end by link L to the treadle M, so that by operating the treadle M the blocks D D and jaws C 0 will be vertically reciprocated in the recess B, the links g 7 serving as the treadle is operated to cause the jaws O O at the same time to be opened and closed for first grasping the wire, causing it to be lifted by the jawsG O. and held for receiving the blow from the hammer, then cutting it off after the blow forming the rivet and then releasing the wire as the jaws G O and blocks D D start downward. The outward movement of the lower ends 'of the jaws G 0, due to the spreading action of the links 9 g,when the treadle is operated for lifting the wire, is limited by the plates h h, placed in the recess B. These plates h h are correspondingly cut away or beveled back near their upper ends, as shown at j j, for permitting a greater outward movement of the lower ends of the jaws G G as they approach the limit of their upward movement. The wheels 21, that are journaled in the lower ends of the jaws C 0, run against plates h h,

to overcome friction, and the knives a iare so set in the upper ends of the jaws G 0 relative to the limited outward movement of the lower ends of the jaws O O that upon operating the treadle M the knives i i will, as above mentioned, first grasp the wire f and cause it to be lifted with the jaws O O and blocks D D, and will hold the wire f, without cutting it entirely off, until-the upper end of the wire f comes within the range of the tool 0 and receives its blow, and will then cut off the wire f, forming the rivet or pin. The upward movement of the jaws O 0, blocks D D, &c.,

in recess B is limited by the forward end of the lever-J striking against the lower edge of the main frame A; and in practice the distance of movement of the said jaws, blocks, &c., in the recess B will be about twice the length of the rivets, so that the feeding upward of the wire f between the jaws G C maybe accomplished, as next described.

N is the feeding-clamp, by which the wire f, when the jaws O O and blocks D D are operated, is caused to move upward through the blocks D D and between the jaws C O. This clamp is composed of the plates k, pivoted to the cross-plates m m, and of the screw 0, that passes through the outer end of the plate 70 and works in or against the opposite plate, In, for forcing the rear ends of the plates 70 7c apart for clamping the wire f in the cut away places i '5, made near the forward ends of the plates 70 [k,- and by means of this screw 0 the plates k k may be made to grasp the wire f with greater or less firmness, as required, to hold the wire for feeding.

When in position for operation, the clamp N will be placed upon thewire f through the opening 0, made in the faceplate E, and it will occupy the space between the adjacent faces of the angle-plates P P, which are secured by screws 1) p to plate E, so as to reach into the opening 0, as shown in Figs. 1 and 3. The plates]? P are for regulating the feed of the wire f, and are made adjustable upon plate E by means of the slots 19 1), through which the screws 1) 1) pass for making longer and shorter rivets or pins, as required. The inner ends of the plates P P are notched to form the membersp p (shown clearly in Fig. 5, )which straddle the wire f and reach to the ends of, or a little beyond, the inner ends of the plates his, so that the clamp N, when moved up and down in the space between the adjacent faces of the plates P P,will strike the plates squarely, thus preventing all danger of the wire being bent by the clamp N. The distance between the adjacent faces of the plates P P marks the length of the rivets or pins; and I provide the screw (1 which turns in a screw-tap made in the rib rififormed on face-plate E, for accurately adjusting the upper plate, P, to and from the lower plate P. The action of the plates P P", together with the clamp-plate N, for causing the feed of the wire f, is as follows: The feedclamp N having been first clamped upon the wire f, in the space between the plates P P, with sufficient firmness, by turning screw 0 to cause the clamp to cling to the wire,upon operating the treadle M, and causing the wire to be lifted, as above described, the clamp-plate N will move upward with the wire as far as the upper plate, P, will permit it to go, and this distance of movement will be just the length of the rivet. The wire f, as above mentioned, moves with each upward movement of the jaws c c twice the length of arivet, so that after the clamp-plate N is stopped by the upper plate, P, the wire will be drawn upward through the clamp N the length of a rivet. Now, upon the downward movement of the jaws O O the wire f would move down the whole distance with the jaws G O-that is, twice the length of the rivet--but for the clamp N, which moves freely downward with the jaws O O, and the wire f, until the clamp N strikes the lower plate, P,where it stops, and, being clasped upon the wire f, the clamp N holds the wire f stationary at that point while the jaws O 0 complete their descent,thus causing the knives z 1), in the next operation of the treadle, to grasp the wire just a rivets length below the upper end of the wire, where the last rivet was cut off.

The manner of using the machine is as follows: The wire f having been forced upthrough the tubes 6' e and the feeding-clamp N properly clamped upon the wire f, and continuous motion being imparted to the shaft G for continuously reciprocating the hammer-head F, the attendant will take a rib and brace and place them upon the upper end of the wire f:-

that is, upon that portion of wire f which projects above the knives i i. This having been done, he will place his foot upon the treadle and press downward, which will cause the knives i c first to grasp and then lift the wire f until its upper end is struck by tool 0 in the hammer-head F, and then to cut the rivet off from the wire, leaving the rivet headed in the rib and brace. This operation is to be repeated with each rib and brace, and it can be done with great rapidity and comparative ease. The tubes e c are removable from the blocks D D, and there will be several interchangeable sets of 'these tubes with different sized passages through them, so that wires of different sizes may be used in the machine.

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

1. The combination of the frame A,recessed at B, the blocks D D, and the removable faceplate E, with the jaws O 0, held as shown and described.

2. The combination, with the jaws-O C and their operative mechanism, of the knives i z, arranged in the upper ends of said jaws to grasp the wire, lift it, hold it until the upper end is riveted, and finally cut it off, as described. v

3. The jaws O O, pivoted to block D and linked to block D, in combination with the treadle and the plates h h, the guideways for 'tion with the jaws C O,pivoted at e and linked to block D, substantially as and for the purposes set forth. 5. The combination, with the verticallymovable and opening and closing jaws O 0,10f the feed-clamp N, substantially as described.

7 6. The combination, with the feed-clamp N and vertically-movable jaws C G, of the plates plates P P and face-plate E, formed with open- 10 ings O, the plates P P being attached to the plate E, substantially as and for the purpose described.

DANI-EL M. Ii-EDMOND.

' Witnesses:

H. A. WEST, O. SEDGWIOK.

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