US1268286A - Wire-nail machine. - Google Patents

Description

S. L'SCHWERIN. WIRE NAIL MACHINE- APPLICATION FILED FEB- 26. 19:1.-

Patented June 4, 1918;

5 SHEETS-SHEET I mam IIW

3.4. SCHWERIN. WIRE NAIL MACHINE. APPLICATION FILED FEB. 26. .1917.

- Patented June 4, 1918..

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. IIVIYIIEIVTOR V y h ATTOR EV S.. J. SGHWERIN.

WIRE NAIL MACHINE;

APPiLlCATION FILED FEB-26.1917.

Patented June 4,1918

5 SHEETS-SHEET 3.

I ATTOIVEY 8.1. SCHWERIN.

WIRE NAIL MACHINE. APPLICATION FlL ED FEB. 26. I917.

5 SHEETS-SHEET 4.

LLiL I H I f f I I l Ila WITNESS INVENTOI? Parenced June 4, 1918.

S. J. SCHWERIN.

WIRE NAIL MACHINE; APPLICATION men FEB-26.1917.

Patented June 4, 1918 5 SHEETS-SHEET 5.

SAMUEL J. SCH'WERIN, OF vllfftlhiafill IETIE, OREGON.

WIRE-NAIL MACHINE.

Specification of Letters Patent.

Patented June at, 181th.

Application filed February 26. 1917. Serial No. 150,902.

. chines, of which the following is a specififor the sake of clearness.

cation.

The invention relates to machines for making wire nails, tacks, spikes, rivets, etc, and has for its object to greatly increase the capacity of such machines and the rapidity with which such articles can be made. Also to provide a strong, durable machine capable of makin four different sizes of the article desired at every complete oscilla tion. The machine can beso arranged that it is possible to make tacks, rivets and nails at the same time. All of the movements are dependent upon and correlated to the oscillation of a heavy central disk, which discloses a new principle of operation of such machines.

Referring to the drawings, Figure 1 is a plan, with cutting off mechanisms omitted Fig, 2 is a side elevation with a section showing two bottom cut-ofis. Fig. 3 is a side elevation showing two top cut-ofls and adjustable ieed arms. Fig. 4 is a cross sectional elevation showing the guides 48 and 48 for the heading tools 17 and 17 also the hoppers at? and 47 which catch the articles as they are made. Fig. 5 is an end elevation showing the drive and the ratchet device for the feed-in mechanism. Fig. (5 is a side elevation of one feed-in mechanism. Fig. 7 is a plan of the same. Fig. 8 is side elevation of the heading tool 17. Fig. 9 is a plan of same. Fig. 10 is an end view of the head ing tool 17' showing the side guide 48. Fig. 11 is an elevation of the guide head 13, showing slot 48 therein which receives .the side guide 48 of the header. Fig. 12 is a side elevation of the heavy central disk 35, with the top cutting oil devices attached thereto and showing the lugs 15" and 33 which actuate the gripping devices when the disk oscillates, Fig. 13 is an end elevation of the disk 35. Fig. 14 is a plan of one of the bottom cut-oft devices and 1-3 is a side elevation thereof.

' By referring to the plan, Fig. 1,'it will be seen that two wires may be ted to each end of the machine at the same time and that the machine is of the double form type,

the upsetting being done at one end while the severance of the finished article is aecomplished at the other, each complete oscillation of the disk 85 resulting in the formation of four of the articles that are' being made, The four units of the machine are exactly alike, that is, the straightening rolls, the feed-in mecl'ianism, the gripping dies, the headers and the cut-offs are just the same in each unit andtherefore a description of one set will answer for an exposition of.

them all.

In. Figs. 1 and 2, 1, 2, 3 are the straight ening rollers, 4: and 5 the feed rolls. Figs. 6 and 7 show the straightening mechanism in detail, the bottom grooved rollers 1 and '8 are in fixed journals and the top grooved roller 2 can be raised by the handles 6,

' a spring keeping it in place against the bot tom rollers.

The movement of the top feed roller 4 is controlled by the pawl 1", the ratchet 7, the lever 45, Figs. 6 and 7, the connecting bar 16 and the arm i6, see Fig. 3. The travel of the arm 46' corresponds to the oscillations of the disk 35 and by raising or lowering the disk end of the connect ing bar 16 in the vertical slot in the arm 46, the throw of the lever 45 can be regulated and hence the movement of the feed r0114, and a short or long section of wire as may be desired can be fed to the machine. The wire guide 8 is simply a grooved channel through which the wire passes after leaving the feed rolls,tending to straighten same and direct its forward end to the dies or gripping device 11 and 12. The section 12 of the gripping device is movable and the lever 9' and spring 10 tends to keep it away from the stationary part 11, thus leaving an opening between them for the wire. The part 11' is firmly ailixed to the frame of the machine and the face of the dies 11 and 12 are notched so as to grip the material between them firmly when they are pressed together. On the disk 35 are cam like projections 15, 15, 33 and 83, Fig. l and 12 and 13. When the disk 35 swings upward toward the die 12 this projecting lug i'orces it toward 11 and thus grips the wire so that its forward end. can be upset at the proper in stant. The heading tools are indicated in Fig. 1 by numbers 17 and 17, also see Figs. 8 and 9. Each tool has a header each end, 14 and 32, 14' and 32 respectively.

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When the disk 35 swings upward and just as the lug 15 engages 12', the eccentric calm 36 on shaft 18 which is keyed to the disk moves the header 14 toward the gripping dies 11 and 12 with a powerful thrust and upsets the end of the wire which is held in place by the dies. On the frame side of the heading tool are guides like l8 and 4L8 moving in slots like 48, Fig. 11, in stationary guides 13, 13, 31 and 31, aflixed to the frame of the machine and which keep the heading tools in. perfect alinement notwithstanding the heavy service they are required to perform.

The bottom c'ut ofi' mechanism shown in Figs. 2, I land 15. At a proper distance below the axis 18 of the oscillating disk a piece of shaft 38, 38, Fig. 13, extends through the disk on either side forming projections which engage the heavy cut oil bars 37, an end view of which is shown. in F 4i and 5, and 37, shown in Fig. This cut oil" bar has an enlarged part, such as a, a, on its top edge which engages the lugs c and a respectively of the cut-off device when the disk swings forward and back. The details of the cut-off are shown in Figs.- l t and 15, the knife isfirmly held by the part b which is free to move up and down in slot it, the spring (Z tending to keep the bottom lug c in constant engagement with the cutoff bar 37. The cutoff holder 9 is afiixed to the'frame as shown. in Fig. 2. The top cut-offs, Figs. 3, l2 and 13, are placed on the upper part of the disk 35, two on each side, cutting off four units of the article being made at each complete oscillation. In Fig. 3, the cut-offs i and 7c are shown in relation tothe rest of the mechanismeach cuts on the downward movement of its side of the disk. The cutting edges j, y", 5 project .somewhat beyond the cutoifs 2/, t, as

shown by j, j in Fig. 13, so as to reach the material being fed to the machine. Figs. .2. 3 and 5 show the drive. The connecting rod 39 is connected at one end to the crank pin 4-0 of crank disk l1 and at the other to the lower end of the oscillating disk 35. When power applied through pulleys 42, a3, a rocking motion is given to the disk 35 which actuates every moving part of the machine.

Wire is fed through the straightening rolls 1, 9., 3 to the feed rolls l and 5. The disk end of the feed bar 16 is adjusted in the slot at bottom of thrust arm d6 so as to give just the right throw to the lever 45, which actuates the pawl and ratchet 7 and 7 controlling the movement of the top feed roll l and the desired length of wire is fed to the machine. The wire passes from the feed rolls through the guide 8 and thence between the gripping dies 11 and 12, the

latter being IIIOVHlTIlB toward and away from the stationary part 11. When the lug 1 on the disk 35, Fig. 1, moves upward 1t enineaaee gages the die 12 forcing it toward 11' and the wire between them is held in a strong grip, the forward end of the wire projecting slightly beyond the die so as to leave enough metal to form a head. At the same time the eccentric 36 gives the header tool 17 a powerful thrust and the header 1% presses a head on the forward end of the wire that projects through the gripping dies. The disk 35 then swings in the opposite direction, the lug 1.5 releases the gripping die 12, the spring 10 moving the die out of engagement with the wire, the feed rolls 4: and 5 move the wire forward the proper length and the header tool 17 moves away from the advancing wire. As the wire is being moved forward, the lug 38 moves the cut-off bar 37 so as to bring a into engagement with c ofth'e bottom cut-oil tool 6, raising the knife 7' upward. At just this same instant the knife j of the top cut-off '5 moves downward and the wire is severed at the proper place, leaving enough metal pro ecting through the dies 11 and 125 to form a good head and pointing the nail that has'just been cut off. The nails as made drop into a hopper 7 and fall into a keg placed to receive them. The movements above described are very rapid and are repeated with precision. They are duplicated at the other end of the machine but in just the opposite order. For example when the wire is being cut off ,by the knives f and j, a. head is being put on the wire by the header 32; when the wire is being cut off by the knives f and Z, a head is being put on the wire by the header 14:. These movements'are also duplicated on the other side of the machine and in the same order, the result being that two nails are made by precisely similar movements and at the same time at each end of the machine at each forward and at each backward swing of the central disk 35. Thus at each complete oscillation of the disk four nails are' made, two at each end of the machine. It will be seen that by adjusting the feed-in mechanisms differently that four different lengths of wire can be fed to the machine and hence that four different sizes of nails can be made through one complete oscillation of the disk, :1. result not obtainable with any other type of nail making machine, and which I claim is broadly new in the art.

I claim,"

l. in a machine of the character described, the combination of four feeding mechanisms, four gripping dies, four headers, four cutoil devices, and a heavy central disk, two complete units of each mechanism being located at each end of the machine and all of their movements being actuated by and correlated to the oscillations of the central disk.

2. In a nail :rnaking machine, cut off means consisting of a disk, a top out-off device mounted on the disk, a-bottom cut-ofl' deaeeaaee vice attached to the frame of the machine, a cut-off bar actuated by the disk which raises and lowers the bottom cut-0E device so that it cooperates with the top cut-0H device.

. 3. In a nail making machine, four top outoif devices, a central disk on which the top cut-oft" devices are mounted, two on each side, four bottom cnt-ofi devices attached to the frame of the machine,two'at each end, twocut-off bars actuated by the central disk which engage respectively two of the bottom cut-ofi' devices, one at each end of the machine, imparting to them an up and down movement so that they will cooperate with their cogrespondin top cut oil? devices,

' t. In a nail ma ing machine, a bottom cut-off device. which consists of a grooved bracket, a knife holder which is free to move up and down in the groove, a bottom lug on the knife holder, a cut-ofi bar with a raised part on its top edge, a spring which keeps the bottom lug of the knife holder in engage them; with the cut-off bar, a disk which actuates the cut-off bar and causes the knife holder to move up and down at proper intervals, when engaged by the said raised part.

5., In a nail making machine, feeding means consisting of two sets of two grooved wheels disk.

6. In a nail making machine, gripping means consisting of two sets of dies at each end of the machine, means for holding the dies apart when not in gripping position, a central disk, lugs on each side of said disk adapted to alternately engage said sets at proper intervals and means for oscillating the disk.

7. Ina nail making machine, a heading means consisting of two upsetting tools, one on each side of the machine, with a header at each end of each upsetting tool, means for keeping each. tool in alinement, a central disk, two eccentrics on the same shaft as the disk, one on each side of the machine, which engage respectively the two upsetting tools, and means for oscillating the disk.

seamen .t sonwnnm.

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